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Auke Kok9a799d72007-09-15 14:07:45 -07001/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
Mark Rustad0391bbe2014-02-28 15:48:55 -08004 Copyright(c) 1999 - 2014 Intel Corporation.
Auke Kok9a799d72007-09-15 14:07:45 -07005
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
Jacob Kellerb89aae72014-02-22 01:23:50 +000023 Linux NICS <linux.nics@intel.com>
Auke Kok9a799d72007-09-15 14:07:45 -070024 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include <linux/types.h>
30#include <linux/module.h>
31#include <linux/pci.h>
32#include <linux/netdevice.h>
33#include <linux/vmalloc.h>
34#include <linux/string.h>
35#include <linux/in.h>
Alexey Dobriyana6b7a402011-06-06 10:43:46 +000036#include <linux/interrupt.h>
Auke Kok9a799d72007-09-15 14:07:45 -070037#include <linux/ip.h>
38#include <linux/tcp.h>
Alexander Duyck897ab152011-05-27 05:31:47 +000039#include <linux/sctp.h>
Lucy Liu60127862009-07-22 14:07:33 +000040#include <linux/pkt_sched.h>
Auke Kok9a799d72007-09-15 14:07:45 -070041#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
Auke Kok9a799d72007-09-15 14:07:45 -070043#include <net/checksum.h>
44#include <net/ip6_checksum.h>
Martin K Petersenc762dff2014-11-15 14:24:51 +000045#include <linux/etherdevice.h>
Auke Kok9a799d72007-09-15 14:07:45 -070046#include <linux/ethtool.h>
Jiri Pirko01789342011-08-16 06:29:00 +000047#include <linux/if.h>
Auke Kok9a799d72007-09-15 14:07:45 -070048#include <linux/if_vlan.h>
John Fastabend2a47fa42013-11-06 09:54:52 -080049#include <linux/if_macvlan.h>
John Fastabend815cccb2012-10-24 08:13:09 +000050#include <linux/if_bridge.h>
Paul Gortmaker70c71602011-05-22 16:47:17 -040051#include <linux/prefetch.h>
Yi Zoueacd73f2009-05-13 13:11:06 +000052#include <scsi/fc/fc_fcoe.h>
Don Skidmore3f207802014-12-23 07:40:34 +000053#include <net/vxlan.h>
Auke Kok9a799d72007-09-15 14:07:45 -070054
Martin K Petersenc762dff2014-11-15 14:24:51 +000055#ifdef CONFIG_OF
56#include <linux/of_net.h>
57#endif
58
59#ifdef CONFIG_SPARC
60#include <asm/idprom.h>
61#include <asm/prom.h>
62#endif
63
Auke Kok9a799d72007-09-15 14:07:45 -070064#include "ixgbe.h"
65#include "ixgbe_common.h"
Don Skidmoreee5f7842009-11-06 12:56:20 +000066#include "ixgbe_dcb_82599.h"
Greg Rose1cdd1ec2010-01-09 02:26:46 +000067#include "ixgbe_sriov.h"
Auke Kok9a799d72007-09-15 14:07:45 -070068
69char ixgbe_driver_name[] = "ixgbe";
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070070static const char ixgbe_driver_string[] =
Joe Perchese8e9f692010-09-07 21:34:53 +000071 "Intel(R) 10 Gigabit PCI Express Network Driver";
Jeff Kirsher8af3c332012-02-18 07:08:14 +000072#ifdef IXGBE_FCOE
Neerav Parikhea818752012-01-04 20:23:40 +000073char ixgbe_default_device_descr[] =
74 "Intel(R) 10 Gigabit Network Connection";
Jeff Kirsher8af3c332012-02-18 07:08:14 +000075#else
76static char ixgbe_default_device_descr[] =
77 "Intel(R) 10 Gigabit Network Connection";
78#endif
Don Skidmore9be4a9b2014-11-29 05:22:58 +000079#define DRV_VERSION "4.0.1-k"
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070080const char ixgbe_driver_version[] = DRV_VERSION;
Don Skidmorea52055e2011-02-23 09:58:39 +000081static const char ixgbe_copyright[] =
Mark Rustad0391bbe2014-02-28 15:48:55 -080082 "Copyright (c) 1999-2014 Intel Corporation.";
Auke Kok9a799d72007-09-15 14:07:45 -070083
Don Skidmoref44e7512015-06-09 16:36:23 -070084static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter";
85
Auke Kok9a799d72007-09-15 14:07:45 -070086static const struct ixgbe_info *ixgbe_info_tbl[] = {
Don Skidmore6a14ee02014-12-05 03:59:50 +000087 [board_82598] = &ixgbe_82598_info,
88 [board_82599] = &ixgbe_82599_info,
89 [board_X540] = &ixgbe_X540_info,
90 [board_X550] = &ixgbe_X550_info,
91 [board_X550EM_x] = &ixgbe_X550EM_x_info,
Auke Kok9a799d72007-09-15 14:07:45 -070092};
93
94/* ixgbe_pci_tbl - PCI Device ID Table
95 *
96 * Wildcard entries (PCI_ANY_ID) should come last
97 * Last entry must be all 0s
98 *
99 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
100 * Class, Class Mask, private data (not used) }
101 */
Benoit Taine9baa3c32014-08-08 15:56:03 +0200102static const struct pci_device_id ixgbe_pci_tbl[] = {
Alexander Duyck54239c62011-07-15 03:06:06 +0000103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 },
104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 },
105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 },
106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 },
107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 },
108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 },
109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 },
110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 },
111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 },
112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 },
113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 },
114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 },
115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 },
116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 },
117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 },
118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 },
119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 },
120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 },
121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 },
122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 },
123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 },
124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 },
125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 },
126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 },
127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 },
128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 },
Don Skidmore8f583322013-07-27 06:25:38 +0000129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 },
Emil Tantilov7d145282011-09-08 08:30:14 +0000130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 },
Emil Tantilov9e791e42011-11-04 06:43:29 +0000131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 },
joshua.a.hay@intel.comdf376f02012-09-21 00:08:21 +0000132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 },
Don Skidmore6a14ee02014-12-05 03:59:50 +0000133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550},
134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x},
135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x},
Don Skidmorededa5622015-06-09 17:39:46 -0700136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x},
Auke Kok9a799d72007-09-15 14:07:45 -0700137 /* required last entry */
138 {0, }
139};
140MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
141
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400142#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800143static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +0000144 void *p);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800145static struct notifier_block dca_notifier = {
146 .notifier_call = ixgbe_notify_dca,
147 .next = NULL,
148 .priority = 0
149};
150#endif
151
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000152#ifdef CONFIG_PCI_IOV
153static unsigned int max_vfs;
154module_param(max_vfs, uint, 0);
Joe Perchese8e9f692010-09-07 21:34:53 +0000155MODULE_PARM_DESC(max_vfs,
Jacob Keller170e8542013-11-09 04:52:32 -0800156 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000157#endif /* CONFIG_PCI_IOV */
158
Peter P Waskiewicz Jr8ef78ad2012-02-01 09:19:21 +0000159static unsigned int allow_unsupported_sfp;
160module_param(allow_unsupported_sfp, uint, 0);
161MODULE_PARM_DESC(allow_unsupported_sfp,
162 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
163
stephen hemmingerb3f4d592012-03-13 06:04:20 +0000164#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
165static int debug = -1;
166module_param(debug, int, 0);
167MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
168
Auke Kok9a799d72007-09-15 14:07:45 -0700169MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
170MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
171MODULE_LICENSE("GPL");
172MODULE_VERSION(DRV_VERSION);
173
Mark Rustad14438462014-02-28 15:48:57 -0800174static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev);
175
Jacob Kellerb8e82002013-04-09 07:20:09 +0000176static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
177 u32 reg, u16 *value)
178{
Jacob Kellerb8e82002013-04-09 07:20:09 +0000179 struct pci_dev *parent_dev;
180 struct pci_bus *parent_bus;
181
182 parent_bus = adapter->pdev->bus->parent;
183 if (!parent_bus)
184 return -1;
185
186 parent_dev = parent_bus->self;
187 if (!parent_dev)
188 return -1;
189
Yijing Wangc0798ed2013-09-04 17:30:08 +0000190 if (!pci_is_pcie(parent_dev))
Jacob Kellerb8e82002013-04-09 07:20:09 +0000191 return -1;
192
Yijing Wangc0798ed2013-09-04 17:30:08 +0000193 pcie_capability_read_word(parent_dev, reg, value);
Mark Rustad14438462014-02-28 15:48:57 -0800194 if (*value == IXGBE_FAILED_READ_CFG_WORD &&
195 ixgbe_check_cfg_remove(&adapter->hw, parent_dev))
196 return -1;
Jacob Kellerb8e82002013-04-09 07:20:09 +0000197 return 0;
198}
199
200static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter)
201{
202 struct ixgbe_hw *hw = &adapter->hw;
203 u16 link_status = 0;
204 int err;
205
206 hw->bus.type = ixgbe_bus_type_pci_express;
207
208 /* Get the negotiated link width and speed from PCI config space of the
209 * parent, as this device is behind a switch
210 */
211 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status);
212
213 /* assume caller will handle error case */
214 if (err)
215 return err;
216
217 hw->bus.width = ixgbe_convert_bus_width(link_status);
218 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
219
220 return 0;
221}
222
Jacob Kellere027d1a2013-07-31 06:53:31 +0000223/**
224 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent
225 * @hw: hw specific details
226 *
227 * This function is used by probe to determine whether a device's PCI-Express
228 * bandwidth details should be gathered from the parent bus instead of from the
229 * device. Used to ensure that various locations all have the correct device ID
230 * checks.
231 */
232static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw)
233{
234 switch (hw->device_id) {
235 case IXGBE_DEV_ID_82599_SFP_SF_QP:
Don Skidmore8f583322013-07-27 06:25:38 +0000236 case IXGBE_DEV_ID_82599_QSFP_SF_QP:
Jacob Kellere027d1a2013-07-31 06:53:31 +0000237 return true;
238 default:
239 return false;
240 }
241}
242
243static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
244 int expected_gts)
245{
246 int max_gts = 0;
247 enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
248 enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
249 struct pci_dev *pdev;
250
251 /* determine whether to use the the parent device
252 */
253 if (ixgbe_pcie_from_parent(&adapter->hw))
254 pdev = adapter->pdev->bus->parent->self;
255 else
256 pdev = adapter->pdev;
257
258 if (pcie_get_minimum_link(pdev, &speed, &width) ||
259 speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) {
260 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
261 return;
262 }
263
264 switch (speed) {
265 case PCIE_SPEED_2_5GT:
266 /* 8b/10b encoding reduces max throughput by 20% */
267 max_gts = 2 * width;
268 break;
269 case PCIE_SPEED_5_0GT:
270 /* 8b/10b encoding reduces max throughput by 20% */
271 max_gts = 4 * width;
272 break;
273 case PCIE_SPEED_8_0GT:
Jacob Keller9f0a4332013-10-18 05:09:19 +0000274 /* 128b/130b encoding reduces throughput by less than 2% */
Jacob Kellere027d1a2013-07-31 06:53:31 +0000275 max_gts = 8 * width;
276 break;
277 default:
278 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
279 return;
280 }
281
282 e_dev_info("PCI Express bandwidth of %dGT/s available\n",
283 max_gts);
284 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
285 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" :
286 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" :
287 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" :
288 "Unknown"),
289 width,
290 (speed == PCIE_SPEED_2_5GT ? "20%" :
291 speed == PCIE_SPEED_5_0GT ? "20%" :
Jacob Keller9f0a4332013-10-18 05:09:19 +0000292 speed == PCIE_SPEED_8_0GT ? "<2%" :
Jacob Kellere027d1a2013-07-31 06:53:31 +0000293 "Unknown"));
294
295 if (max_gts < expected_gts) {
296 e_dev_warn("This is not sufficient for optimal performance of this card.\n");
297 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
298 expected_gts);
299 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
300 }
301}
302
Alexander Duyck70864002011-04-27 09:13:56 +0000303static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
304{
305 if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
Mark Rustad09f40ae2014-01-14 18:53:11 -0800306 !test_bit(__IXGBE_REMOVING, &adapter->state) &&
Alexander Duyck70864002011-04-27 09:13:56 +0000307 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
308 schedule_work(&adapter->service_task);
309}
310
Mark Rustad2a1a0912014-01-14 18:53:15 -0800311static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
312{
313 struct ixgbe_adapter *adapter = hw->back;
314
315 if (!hw->hw_addr)
316 return;
317 hw->hw_addr = NULL;
318 e_dev_err("Adapter removed\n");
Mark Rustad58cf6632014-03-12 00:38:40 +0000319 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
320 ixgbe_service_event_schedule(adapter);
Mark Rustad2a1a0912014-01-14 18:53:15 -0800321}
322
Mark Rustadf8e24722014-03-18 07:03:40 +0000323static void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg)
Mark Rustad2a1a0912014-01-14 18:53:15 -0800324{
325 u32 value;
326
327 /* The following check not only optimizes a bit by not
328 * performing a read on the status register when the
329 * register just read was a status register read that
330 * returned IXGBE_FAILED_READ_REG. It also blocks any
331 * potential recursion.
332 */
333 if (reg == IXGBE_STATUS) {
334 ixgbe_remove_adapter(hw);
335 return;
336 }
337 value = ixgbe_read_reg(hw, IXGBE_STATUS);
338 if (value == IXGBE_FAILED_READ_REG)
339 ixgbe_remove_adapter(hw);
340}
341
Mark Rustadf8e24722014-03-18 07:03:40 +0000342/**
343 * ixgbe_read_reg - Read from device register
344 * @hw: hw specific details
345 * @reg: offset of register to read
346 *
347 * Returns : value read or IXGBE_FAILED_READ_REG if removed
348 *
349 * This function is used to read device registers. It checks for device
350 * removal by confirming any read that returns all ones by checking the
351 * status register value for all ones. This function avoids reading from
352 * the hardware if a removal was previously detected in which case it
353 * returns IXGBE_FAILED_READ_REG (all ones).
354 */
355u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg)
356{
357 u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr);
358 u32 value;
359
360 if (ixgbe_removed(reg_addr))
361 return IXGBE_FAILED_READ_REG;
362 value = readl(reg_addr + reg);
363 if (unlikely(value == IXGBE_FAILED_READ_REG))
364 ixgbe_check_remove(hw, reg);
365 return value;
366}
367
Mark Rustad14438462014-02-28 15:48:57 -0800368static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev)
369{
370 u16 value;
371
372 pci_read_config_word(pdev, PCI_VENDOR_ID, &value);
373 if (value == IXGBE_FAILED_READ_CFG_WORD) {
374 ixgbe_remove_adapter(hw);
375 return true;
376 }
377 return false;
378}
379
380u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg)
381{
382 struct ixgbe_adapter *adapter = hw->back;
383 u16 value;
384
385 if (ixgbe_removed(hw->hw_addr))
386 return IXGBE_FAILED_READ_CFG_WORD;
387 pci_read_config_word(adapter->pdev, reg, &value);
388 if (value == IXGBE_FAILED_READ_CFG_WORD &&
389 ixgbe_check_cfg_remove(hw, adapter->pdev))
390 return IXGBE_FAILED_READ_CFG_WORD;
391 return value;
392}
393
394#ifdef CONFIG_PCI_IOV
395static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg)
396{
397 struct ixgbe_adapter *adapter = hw->back;
398 u32 value;
399
400 if (ixgbe_removed(hw->hw_addr))
401 return IXGBE_FAILED_READ_CFG_DWORD;
402 pci_read_config_dword(adapter->pdev, reg, &value);
403 if (value == IXGBE_FAILED_READ_CFG_DWORD &&
404 ixgbe_check_cfg_remove(hw, adapter->pdev))
405 return IXGBE_FAILED_READ_CFG_DWORD;
406 return value;
407}
408#endif /* CONFIG_PCI_IOV */
409
Jacob Kellered192312014-02-22 01:23:53 +0000410void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value)
411{
412 struct ixgbe_adapter *adapter = hw->back;
413
414 if (ixgbe_removed(hw->hw_addr))
415 return;
416 pci_write_config_word(adapter->pdev, reg, value);
417}
418
Alexander Duyck70864002011-04-27 09:13:56 +0000419static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
420{
421 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
422
Stephen Hemminger52f33af2011-12-22 16:34:52 +0000423 /* flush memory to make sure state is correct before next watchdog */
Peter Zijlstra4e857c52014-03-17 18:06:10 +0100424 smp_mb__before_atomic();
Alexander Duyck70864002011-04-27 09:13:56 +0000425 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
426}
427
Taku Izumidcd79ae2010-04-27 14:39:53 +0000428struct ixgbe_reg_info {
429 u32 ofs;
430 char *name;
431};
432
433static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
434
435 /* General Registers */
436 {IXGBE_CTRL, "CTRL"},
437 {IXGBE_STATUS, "STATUS"},
438 {IXGBE_CTRL_EXT, "CTRL_EXT"},
439
440 /* Interrupt Registers */
441 {IXGBE_EICR, "EICR"},
442
443 /* RX Registers */
444 {IXGBE_SRRCTL(0), "SRRCTL"},
445 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
446 {IXGBE_RDLEN(0), "RDLEN"},
447 {IXGBE_RDH(0), "RDH"},
448 {IXGBE_RDT(0), "RDT"},
449 {IXGBE_RXDCTL(0), "RXDCTL"},
450 {IXGBE_RDBAL(0), "RDBAL"},
451 {IXGBE_RDBAH(0), "RDBAH"},
452
453 /* TX Registers */
454 {IXGBE_TDBAL(0), "TDBAL"},
455 {IXGBE_TDBAH(0), "TDBAH"},
456 {IXGBE_TDLEN(0), "TDLEN"},
457 {IXGBE_TDH(0), "TDH"},
458 {IXGBE_TDT(0), "TDT"},
459 {IXGBE_TXDCTL(0), "TXDCTL"},
460
461 /* List Terminator */
Mark Rustadca8dfe22014-07-24 06:19:24 +0000462 { .name = NULL }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000463};
464
465
466/*
467 * ixgbe_regdump - register printout routine
468 */
469static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
470{
471 int i = 0, j = 0;
472 char rname[16];
473 u32 regs[64];
474
475 switch (reginfo->ofs) {
476 case IXGBE_SRRCTL(0):
477 for (i = 0; i < 64; i++)
478 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
479 break;
480 case IXGBE_DCA_RXCTRL(0):
481 for (i = 0; i < 64; i++)
482 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
483 break;
484 case IXGBE_RDLEN(0):
485 for (i = 0; i < 64; i++)
486 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
487 break;
488 case IXGBE_RDH(0):
489 for (i = 0; i < 64; i++)
490 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
491 break;
492 case IXGBE_RDT(0):
493 for (i = 0; i < 64; i++)
494 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
495 break;
496 case IXGBE_RXDCTL(0):
497 for (i = 0; i < 64; i++)
498 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
499 break;
500 case IXGBE_RDBAL(0):
501 for (i = 0; i < 64; i++)
502 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
503 break;
504 case IXGBE_RDBAH(0):
505 for (i = 0; i < 64; i++)
506 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
507 break;
508 case IXGBE_TDBAL(0):
509 for (i = 0; i < 64; i++)
510 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
511 break;
512 case IXGBE_TDBAH(0):
513 for (i = 0; i < 64; i++)
514 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
515 break;
516 case IXGBE_TDLEN(0):
517 for (i = 0; i < 64; i++)
518 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
519 break;
520 case IXGBE_TDH(0):
521 for (i = 0; i < 64; i++)
522 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
523 break;
524 case IXGBE_TDT(0):
525 for (i = 0; i < 64; i++)
526 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
527 break;
528 case IXGBE_TXDCTL(0):
529 for (i = 0; i < 64; i++)
530 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
531 break;
532 default:
Joe Perchesc7689572010-09-07 21:35:17 +0000533 pr_info("%-15s %08x\n", reginfo->name,
Taku Izumidcd79ae2010-04-27 14:39:53 +0000534 IXGBE_READ_REG(hw, reginfo->ofs));
535 return;
536 }
537
538 for (i = 0; i < 8; i++) {
539 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
Joe Perchesc7689572010-09-07 21:35:17 +0000540 pr_err("%-15s", rname);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000541 for (j = 0; j < 8; j++)
Joe Perchesc7689572010-09-07 21:35:17 +0000542 pr_cont(" %08x", regs[i*8+j]);
543 pr_cont("\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000544 }
545
546}
547
548/*
549 * ixgbe_dump - Print registers, tx-rings and rx-rings
550 */
551static void ixgbe_dump(struct ixgbe_adapter *adapter)
552{
553 struct net_device *netdev = adapter->netdev;
554 struct ixgbe_hw *hw = &adapter->hw;
555 struct ixgbe_reg_info *reginfo;
556 int n = 0;
557 struct ixgbe_ring *tx_ring;
Alexander Duyck729739b2012-02-08 07:51:06 +0000558 struct ixgbe_tx_buffer *tx_buffer;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000559 union ixgbe_adv_tx_desc *tx_desc;
560 struct my_u0 { u64 a; u64 b; } *u0;
561 struct ixgbe_ring *rx_ring;
562 union ixgbe_adv_rx_desc *rx_desc;
563 struct ixgbe_rx_buffer *rx_buffer_info;
564 u32 staterr;
565 int i = 0;
566
567 if (!netif_msg_hw(adapter))
568 return;
569
570 /* Print netdevice Info */
571 if (netdev) {
572 dev_info(&adapter->pdev->dev, "Net device Info\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000573 pr_info("Device Name state "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000574 "trans_start last_rx\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000575 pr_info("%-15s %016lX %016lX %016lX\n",
576 netdev->name,
577 netdev->state,
578 netdev->trans_start,
579 netdev->last_rx);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000580 }
581
582 /* Print Registers */
583 dev_info(&adapter->pdev->dev, "Register Dump\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000584 pr_info(" Register Name Value\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000585 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
586 reginfo->name; reginfo++) {
587 ixgbe_regdump(hw, reginfo);
588 }
589
590 /* Print TX Ring Summary */
591 if (!netdev || !netif_running(netdev))
Mark Rustade90dd262014-07-22 06:51:08 +0000592 return;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000593
594 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000595 pr_info(" %s %s %s %s\n",
596 "Queue [NTU] [NTC] [bi(ntc)->dma ]",
597 "leng", "ntw", "timestamp");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000598 for (n = 0; n < adapter->num_tx_queues; n++) {
599 tx_ring = adapter->tx_ring[n];
Alexander Duyck729739b2012-02-08 07:51:06 +0000600 tx_buffer = &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
Josh Hay8ad88e32012-09-26 05:59:41 +0000601 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
Taku Izumidcd79ae2010-04-27 14:39:53 +0000602 n, tx_ring->next_to_use, tx_ring->next_to_clean,
Alexander Duyck729739b2012-02-08 07:51:06 +0000603 (u64)dma_unmap_addr(tx_buffer, dma),
604 dma_unmap_len(tx_buffer, len),
605 tx_buffer->next_to_watch,
606 (u64)tx_buffer->time_stamp);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000607 }
608
609 /* Print TX Rings */
610 if (!netif_msg_tx_done(adapter))
611 goto rx_ring_summary;
612
613 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
614
615 /* Transmit Descriptor Formats
616 *
Josh Hay39ac8682012-09-26 05:59:36 +0000617 * 82598 Advanced Transmit Descriptor
Taku Izumidcd79ae2010-04-27 14:39:53 +0000618 * +--------------------------------------------------------------+
619 * 0 | Buffer Address [63:0] |
620 * +--------------------------------------------------------------+
Josh Hay39ac8682012-09-26 05:59:36 +0000621 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
Taku Izumidcd79ae2010-04-27 14:39:53 +0000622 * +--------------------------------------------------------------+
623 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
Josh Hay39ac8682012-09-26 05:59:36 +0000624 *
625 * 82598 Advanced Transmit Descriptor (Write-Back Format)
626 * +--------------------------------------------------------------+
627 * 0 | RSV [63:0] |
628 * +--------------------------------------------------------------+
629 * 8 | RSV | STA | NXTSEQ |
630 * +--------------------------------------------------------------+
631 * 63 36 35 32 31 0
632 *
633 * 82599+ Advanced Transmit Descriptor
634 * +--------------------------------------------------------------+
635 * 0 | Buffer Address [63:0] |
636 * +--------------------------------------------------------------+
637 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
638 * +--------------------------------------------------------------+
639 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
640 *
641 * 82599+ Advanced Transmit Descriptor (Write-Back Format)
642 * +--------------------------------------------------------------+
643 * 0 | RSV [63:0] |
644 * +--------------------------------------------------------------+
645 * 8 | RSV | STA | RSV |
646 * +--------------------------------------------------------------+
647 * 63 36 35 32 31 0
Taku Izumidcd79ae2010-04-27 14:39:53 +0000648 */
649
650 for (n = 0; n < adapter->num_tx_queues; n++) {
651 tx_ring = adapter->tx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000652 pr_info("------------------------------------\n");
653 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
654 pr_info("------------------------------------\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000655 pr_info("%s%s %s %s %s %s\n",
656 "T [desc] [address 63:0 ] ",
657 "[PlPOIdStDDt Ln] [bi->dma ] ",
658 "leng", "ntw", "timestamp", "bi->skb");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000659
660 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Alexander Duycke4f74022012-01-31 02:59:44 +0000661 tx_desc = IXGBE_TX_DESC(tx_ring, i);
Alexander Duyck729739b2012-02-08 07:51:06 +0000662 tx_buffer = &tx_ring->tx_buffer_info[i];
Taku Izumidcd79ae2010-04-27 14:39:53 +0000663 u0 = (struct my_u0 *)tx_desc;
Josh Hay8ad88e32012-09-26 05:59:41 +0000664 if (dma_unmap_len(tx_buffer, len) > 0) {
665 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p",
666 i,
667 le64_to_cpu(u0->a),
668 le64_to_cpu(u0->b),
669 (u64)dma_unmap_addr(tx_buffer, dma),
Alexander Duyck729739b2012-02-08 07:51:06 +0000670 dma_unmap_len(tx_buffer, len),
Josh Hay8ad88e32012-09-26 05:59:41 +0000671 tx_buffer->next_to_watch,
672 (u64)tx_buffer->time_stamp,
673 tx_buffer->skb);
674 if (i == tx_ring->next_to_use &&
675 i == tx_ring->next_to_clean)
676 pr_cont(" NTC/U\n");
677 else if (i == tx_ring->next_to_use)
678 pr_cont(" NTU\n");
679 else if (i == tx_ring->next_to_clean)
680 pr_cont(" NTC\n");
681 else
682 pr_cont("\n");
683
684 if (netif_msg_pktdata(adapter) &&
685 tx_buffer->skb)
686 print_hex_dump(KERN_INFO, "",
687 DUMP_PREFIX_ADDRESS, 16, 1,
688 tx_buffer->skb->data,
689 dma_unmap_len(tx_buffer, len),
690 true);
691 }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000692 }
693 }
694
695 /* Print RX Rings Summary */
696rx_ring_summary:
697 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000698 pr_info("Queue [NTU] [NTC]\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000699 for (n = 0; n < adapter->num_rx_queues; n++) {
700 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000701 pr_info("%5d %5X %5X\n",
702 n, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000703 }
704
705 /* Print RX Rings */
706 if (!netif_msg_rx_status(adapter))
Mark Rustade90dd262014-07-22 06:51:08 +0000707 return;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000708
709 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
710
Josh Hay39ac8682012-09-26 05:59:36 +0000711 /* Receive Descriptor Formats
712 *
713 * 82598 Advanced Receive Descriptor (Read) Format
Taku Izumidcd79ae2010-04-27 14:39:53 +0000714 * 63 1 0
715 * +-----------------------------------------------------+
716 * 0 | Packet Buffer Address [63:1] |A0/NSE|
717 * +----------------------------------------------+------+
718 * 8 | Header Buffer Address [63:1] | DD |
719 * +-----------------------------------------------------+
720 *
721 *
Josh Hay39ac8682012-09-26 05:59:36 +0000722 * 82598 Advanced Receive Descriptor (Write-Back) Format
Taku Izumidcd79ae2010-04-27 14:39:53 +0000723 *
724 * 63 48 47 32 31 30 21 20 16 15 4 3 0
725 * +------------------------------------------------------+
Josh Hay39ac8682012-09-26 05:59:36 +0000726 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
727 * | Packet | IP | | | | Type | Type |
728 * | Checksum | Ident | | | | | |
Taku Izumidcd79ae2010-04-27 14:39:53 +0000729 * +------------------------------------------------------+
730 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
731 * +------------------------------------------------------+
732 * 63 48 47 32 31 20 19 0
Josh Hay39ac8682012-09-26 05:59:36 +0000733 *
734 * 82599+ Advanced Receive Descriptor (Read) Format
735 * 63 1 0
736 * +-----------------------------------------------------+
737 * 0 | Packet Buffer Address [63:1] |A0/NSE|
738 * +----------------------------------------------+------+
739 * 8 | Header Buffer Address [63:1] | DD |
740 * +-----------------------------------------------------+
741 *
742 *
743 * 82599+ Advanced Receive Descriptor (Write-Back) Format
744 *
745 * 63 48 47 32 31 30 21 20 17 16 4 3 0
746 * +------------------------------------------------------+
747 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
748 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
749 * |/ Flow Dir Flt ID | | | | | |
750 * +------------------------------------------------------+
751 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
752 * +------------------------------------------------------+
753 * 63 48 47 32 31 20 19 0
Taku Izumidcd79ae2010-04-27 14:39:53 +0000754 */
Josh Hay39ac8682012-09-26 05:59:36 +0000755
Taku Izumidcd79ae2010-04-27 14:39:53 +0000756 for (n = 0; n < adapter->num_rx_queues; n++) {
757 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000758 pr_info("------------------------------------\n");
759 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
760 pr_info("------------------------------------\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000761 pr_info("%s%s%s",
762 "R [desc] [ PktBuf A0] ",
763 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
Taku Izumidcd79ae2010-04-27 14:39:53 +0000764 "<-- Adv Rx Read format\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000765 pr_info("%s%s%s",
766 "RWB[desc] [PcsmIpSHl PtRs] ",
767 "[vl er S cks ln] ---------------- [bi->skb ] ",
Taku Izumidcd79ae2010-04-27 14:39:53 +0000768 "<-- Adv Rx Write-Back format\n");
769
770 for (i = 0; i < rx_ring->count; i++) {
771 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Alexander Duycke4f74022012-01-31 02:59:44 +0000772 rx_desc = IXGBE_RX_DESC(rx_ring, i);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000773 u0 = (struct my_u0 *)rx_desc;
774 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
775 if (staterr & IXGBE_RXD_STAT_DD) {
776 /* Descriptor Done */
Joe Perchesc7689572010-09-07 21:35:17 +0000777 pr_info("RWB[0x%03X] %016llX "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000778 "%016llX ---------------- %p", i,
779 le64_to_cpu(u0->a),
780 le64_to_cpu(u0->b),
781 rx_buffer_info->skb);
782 } else {
Joe Perchesc7689572010-09-07 21:35:17 +0000783 pr_info("R [0x%03X] %016llX "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000784 "%016llX %016llX %p", i,
785 le64_to_cpu(u0->a),
786 le64_to_cpu(u0->b),
787 (u64)rx_buffer_info->dma,
788 rx_buffer_info->skb);
789
Emil Tantilov9c50c032012-07-26 01:21:24 +0000790 if (netif_msg_pktdata(adapter) &&
791 rx_buffer_info->dma) {
Taku Izumidcd79ae2010-04-27 14:39:53 +0000792 print_hex_dump(KERN_INFO, "",
793 DUMP_PREFIX_ADDRESS, 16, 1,
Emil Tantilov9c50c032012-07-26 01:21:24 +0000794 page_address(rx_buffer_info->page) +
795 rx_buffer_info->page_offset,
Alexander Duyckf8003262012-03-03 02:35:52 +0000796 ixgbe_rx_bufsz(rx_ring), true);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000797 }
798 }
799
800 if (i == rx_ring->next_to_use)
Joe Perchesc7689572010-09-07 21:35:17 +0000801 pr_cont(" NTU\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000802 else if (i == rx_ring->next_to_clean)
Joe Perchesc7689572010-09-07 21:35:17 +0000803 pr_cont(" NTC\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000804 else
Joe Perchesc7689572010-09-07 21:35:17 +0000805 pr_cont("\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000806
807 }
808 }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000809}
810
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800811static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
812{
813 u32 ctrl_ext;
814
815 /* Let firmware take over control of h/w */
816 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
817 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000818 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800819}
820
821static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
822{
823 u32 ctrl_ext;
824
825 /* Let firmware know the driver has taken over */
826 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
827 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000828 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800829}
Auke Kok9a799d72007-09-15 14:07:45 -0700830
Ben Hutchings49ce9c22012-07-10 10:56:00 +0000831/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000832 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
833 * @adapter: pointer to adapter struct
834 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
835 * @queue: queue to map the corresponding interrupt to
836 * @msix_vector: the vector to map to the corresponding queue
837 *
838 */
839static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
Joe Perchese8e9f692010-09-07 21:34:53 +0000840 u8 queue, u8 msix_vector)
Auke Kok9a799d72007-09-15 14:07:45 -0700841{
842 u32 ivar, index;
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000843 struct ixgbe_hw *hw = &adapter->hw;
844 switch (hw->mac.type) {
845 case ixgbe_mac_82598EB:
846 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
847 if (direction == -1)
848 direction = 0;
849 index = (((direction * 64) + queue) >> 2) & 0x1F;
850 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
851 ivar &= ~(0xFF << (8 * (queue & 0x3)));
852 ivar |= (msix_vector << (8 * (queue & 0x3)));
853 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
854 break;
855 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -0800856 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +0000857 case ixgbe_mac_X550:
858 case ixgbe_mac_X550EM_x:
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000859 if (direction == -1) {
860 /* other causes */
861 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
862 index = ((queue & 1) * 8);
863 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
864 ivar &= ~(0xFF << index);
865 ivar |= (msix_vector << index);
866 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
867 break;
868 } else {
869 /* tx or rx causes */
870 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
871 index = ((16 * (queue & 1)) + (8 * direction));
872 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
873 ivar &= ~(0xFF << index);
874 ivar |= (msix_vector << index);
875 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
876 break;
877 }
878 default:
879 break;
880 }
Auke Kok9a799d72007-09-15 14:07:45 -0700881}
882
Alexander Duyckfe49f042009-06-04 16:00:09 +0000883static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000884 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +0000885{
886 u32 mask;
887
Alexander Duyckbd508172010-11-16 19:27:03 -0800888 switch (adapter->hw.mac.type) {
889 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +0000890 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
891 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
Alexander Duyckbd508172010-11-16 19:27:03 -0800892 break;
893 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -0800894 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +0000895 case ixgbe_mac_X550:
896 case ixgbe_mac_X550EM_x:
Alexander Duyckfe49f042009-06-04 16:00:09 +0000897 mask = (qmask & 0xFFFFFFFF);
898 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
899 mask = (qmask >> 32);
900 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
Alexander Duyckbd508172010-11-16 19:27:03 -0800901 break;
902 default:
903 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +0000904 }
905}
906
Alexander Duyck729739b2012-02-08 07:51:06 +0000907void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *ring,
908 struct ixgbe_tx_buffer *tx_buffer)
Alexander Duyckd3d00232011-07-15 02:31:25 +0000909{
Alexander Duyck729739b2012-02-08 07:51:06 +0000910 if (tx_buffer->skb) {
911 dev_kfree_skb_any(tx_buffer->skb);
912 if (dma_unmap_len(tx_buffer, len))
Alexander Duyckd3d00232011-07-15 02:31:25 +0000913 dma_unmap_single(ring->dev,
Alexander Duyck729739b2012-02-08 07:51:06 +0000914 dma_unmap_addr(tx_buffer, dma),
915 dma_unmap_len(tx_buffer, len),
916 DMA_TO_DEVICE);
917 } else if (dma_unmap_len(tx_buffer, len)) {
918 dma_unmap_page(ring->dev,
919 dma_unmap_addr(tx_buffer, dma),
920 dma_unmap_len(tx_buffer, len),
921 DMA_TO_DEVICE);
Alexander Duyckd3d00232011-07-15 02:31:25 +0000922 }
Alexander Duyck729739b2012-02-08 07:51:06 +0000923 tx_buffer->next_to_watch = NULL;
924 tx_buffer->skb = NULL;
925 dma_unmap_len_set(tx_buffer, len, 0);
926 /* tx_buffer must be completely set up in the transmit path */
Auke Kok9a799d72007-09-15 14:07:45 -0700927}
928
Alexander Duyck943561d2012-05-09 22:14:44 -0700929static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter)
930{
931 struct ixgbe_hw *hw = &adapter->hw;
932 struct ixgbe_hw_stats *hwstats = &adapter->stats;
933 int i;
934 u32 data;
935
936 if ((hw->fc.current_mode != ixgbe_fc_full) &&
937 (hw->fc.current_mode != ixgbe_fc_rx_pause))
938 return;
939
940 switch (hw->mac.type) {
941 case ixgbe_mac_82598EB:
942 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
943 break;
944 default:
945 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
946 }
947 hwstats->lxoffrxc += data;
948
949 /* refill credits (no tx hang) if we received xoff */
950 if (!data)
951 return;
952
953 for (i = 0; i < adapter->num_tx_queues; i++)
954 clear_bit(__IXGBE_HANG_CHECK_ARMED,
955 &adapter->tx_ring[i]->state);
956}
957
John Fastabendc84d3242010-11-16 19:27:12 -0800958static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -0700959{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700960 struct ixgbe_hw *hw = &adapter->hw;
John Fastabendc84d3242010-11-16 19:27:12 -0800961 struct ixgbe_hw_stats *hwstats = &adapter->stats;
John Fastabendc84d3242010-11-16 19:27:12 -0800962 u32 xoff[8] = {0};
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000963 u8 tc;
John Fastabendc84d3242010-11-16 19:27:12 -0800964 int i;
Alexander Duyck943561d2012-05-09 22:14:44 -0700965 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700966
Alexander Duyck943561d2012-05-09 22:14:44 -0700967 if (adapter->ixgbe_ieee_pfc)
968 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
John Fastabendc84d3242010-11-16 19:27:12 -0800969
Alexander Duyck943561d2012-05-09 22:14:44 -0700970 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) {
971 ixgbe_update_xoff_rx_lfc(adapter);
John Fastabendc84d3242010-11-16 19:27:12 -0800972 return;
Alexander Duyck943561d2012-05-09 22:14:44 -0700973 }
John Fastabendc84d3242010-11-16 19:27:12 -0800974
975 /* update stats for each tc, only valid with PFC enabled */
976 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000977 u32 pxoffrxc;
978
John Fastabendc84d3242010-11-16 19:27:12 -0800979 switch (hw->mac.type) {
980 case ixgbe_mac_82598EB:
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000981 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
John Fastabendc84d3242010-11-16 19:27:12 -0800982 break;
983 default:
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000984 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
John Fastabendc84d3242010-11-16 19:27:12 -0800985 }
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000986 hwstats->pxoffrxc[i] += pxoffrxc;
987 /* Get the TC for given UP */
988 tc = netdev_get_prio_tc_map(adapter->netdev, i);
989 xoff[tc] += pxoffrxc;
Auke Kok9a799d72007-09-15 14:07:45 -0700990 }
991
John Fastabendc84d3242010-11-16 19:27:12 -0800992 /* disarm tx queues that have received xoff frames */
993 for (i = 0; i < adapter->num_tx_queues; i++) {
994 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
John Fastabendc84d3242010-11-16 19:27:12 -0800995
Parikh, Neerav2afaa002012-09-27 12:02:22 +0000996 tc = tx_ring->dcb_tc;
John Fastabendc84d3242010-11-16 19:27:12 -0800997 if (xoff[tc])
998 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
999 }
1000}
1001
1002static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
1003{
Alexander Duyck7d7ce682012-02-08 07:50:51 +00001004 return ring->stats.packets;
John Fastabendc84d3242010-11-16 19:27:12 -08001005}
1006
1007static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
1008{
John Fastabend2a47fa42013-11-06 09:54:52 -08001009 struct ixgbe_adapter *adapter;
1010 struct ixgbe_hw *hw;
1011 u32 head, tail;
John Fastabendc84d3242010-11-16 19:27:12 -08001012
John Fastabend2a47fa42013-11-06 09:54:52 -08001013 if (ring->l2_accel_priv)
1014 adapter = ring->l2_accel_priv->real_adapter;
1015 else
1016 adapter = netdev_priv(ring->netdev);
1017
1018 hw = &adapter->hw;
1019 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx));
1020 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx));
John Fastabendc84d3242010-11-16 19:27:12 -08001021
1022 if (head != tail)
1023 return (head < tail) ?
1024 tail - head : (tail + ring->count - head);
1025
1026 return 0;
1027}
1028
1029static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
1030{
1031 u32 tx_done = ixgbe_get_tx_completed(tx_ring);
1032 u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
1033 u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
John Fastabendc84d3242010-11-16 19:27:12 -08001034
1035 clear_check_for_tx_hang(tx_ring);
1036
1037 /*
1038 * Check for a hung queue, but be thorough. This verifies
1039 * that a transmit has been completed since the previous
1040 * check AND there is at least one packet pending. The
1041 * ARMED bit is set to indicate a potential hang. The
1042 * bit is cleared if a pause frame is received to remove
1043 * false hang detection due to PFC or 802.3x frames. By
1044 * requiring this to fail twice we avoid races with
1045 * pfc clearing the ARMED bit and conditions where we
1046 * run the check_tx_hang logic with a transmit completion
1047 * pending but without time to complete it yet.
1048 */
Mark Rustade90dd262014-07-22 06:51:08 +00001049 if (tx_done_old == tx_done && tx_pending)
John Fastabendc84d3242010-11-16 19:27:12 -08001050 /* make sure it is true for two checks in a row */
Mark Rustade90dd262014-07-22 06:51:08 +00001051 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
1052 &tx_ring->state);
1053 /* update completed stats and continue */
1054 tx_ring->tx_stats.tx_done_old = tx_done;
1055 /* reset the countdown */
1056 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
John Fastabendc84d3242010-11-16 19:27:12 -08001057
Mark Rustade90dd262014-07-22 06:51:08 +00001058 return false;
Auke Kok9a799d72007-09-15 14:07:45 -07001059}
1060
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001061/**
1062 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
1063 * @adapter: driver private struct
1064 **/
1065static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
1066{
1067
1068 /* Do the reset outside of interrupt context */
1069 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1070 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
Jacob Keller12ff3f32012-12-01 07:57:17 +00001071 e_warn(drv, "initiating reset due to tx timeout\n");
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001072 ixgbe_service_event_schedule(adapter);
1073 }
1074}
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001075
Auke Kok9a799d72007-09-15 14:07:45 -07001076/**
1077 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
Alexander Duyckfe49f042009-06-04 16:00:09 +00001078 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001079 * @tx_ring: tx ring to clean
Auke Kok9a799d72007-09-15 14:07:45 -07001080 **/
Alexander Duyckfe49f042009-06-04 16:00:09 +00001081static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00001082 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07001083{
Alexander Duyckfe49f042009-06-04 16:00:09 +00001084 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001085 struct ixgbe_tx_buffer *tx_buffer;
1086 union ixgbe_adv_tx_desc *tx_desc;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001087 unsigned int total_bytes = 0, total_packets = 0;
Alexander Duyck59224552011-08-31 00:01:06 +00001088 unsigned int budget = q_vector->tx.work_limit;
Alexander Duyck729739b2012-02-08 07:51:06 +00001089 unsigned int i = tx_ring->next_to_clean;
1090
1091 if (test_bit(__IXGBE_DOWN, &adapter->state))
1092 return true;
Auke Kok9a799d72007-09-15 14:07:45 -07001093
Alexander Duyckd3d00232011-07-15 02:31:25 +00001094 tx_buffer = &tx_ring->tx_buffer_info[i];
Alexander Duycke4f74022012-01-31 02:59:44 +00001095 tx_desc = IXGBE_TX_DESC(tx_ring, i);
Alexander Duyck729739b2012-02-08 07:51:06 +00001096 i -= tx_ring->count;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08001097
Alexander Duyck729739b2012-02-08 07:51:06 +00001098 do {
Alexander Duyckd3d00232011-07-15 02:31:25 +00001099 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
Auke Kok9a799d72007-09-15 14:07:45 -07001100
Alexander Duyckd3d00232011-07-15 02:31:25 +00001101 /* if next_to_watch is not set then there is no work pending */
1102 if (!eop_desc)
1103 break;
1104
Alexander Duyck7f83a9e2012-02-08 07:49:23 +00001105 /* prevent any other reads prior to eop_desc */
Alexander Duyck7e63bf42013-01-08 07:00:58 +00001106 read_barrier_depends();
Alexander Duyck7f83a9e2012-02-08 07:49:23 +00001107
Alexander Duyckd3d00232011-07-15 02:31:25 +00001108 /* if DD is not set pending work has not been completed */
1109 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
1110 break;
1111
Alexander Duyckd3d00232011-07-15 02:31:25 +00001112 /* clear next_to_watch to prevent false hangs */
1113 tx_buffer->next_to_watch = NULL;
1114
Alexander Duyck091a6242012-02-08 07:51:01 +00001115 /* update the statistics for this packet */
1116 total_bytes += tx_buffer->bytecount;
1117 total_packets += tx_buffer->gso_segs;
1118
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001119 /* free the skb */
Rick Jonesfe1f2a92014-09-12 17:44:06 +00001120 dev_consume_skb_any(tx_buffer->skb);
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001121
Alexander Duyck729739b2012-02-08 07:51:06 +00001122 /* unmap skb header data */
1123 dma_unmap_single(tx_ring->dev,
1124 dma_unmap_addr(tx_buffer, dma),
1125 dma_unmap_len(tx_buffer, len),
1126 DMA_TO_DEVICE);
1127
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001128 /* clear tx_buffer data */
1129 tx_buffer->skb = NULL;
Alexander Duyck729739b2012-02-08 07:51:06 +00001130 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001131
Alexander Duyck729739b2012-02-08 07:51:06 +00001132 /* unmap remaining buffers */
1133 while (tx_desc != eop_desc) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00001134 tx_buffer++;
1135 tx_desc++;
1136 i++;
Alexander Duyck729739b2012-02-08 07:51:06 +00001137 if (unlikely(!i)) {
1138 i -= tx_ring->count;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001139 tx_buffer = tx_ring->tx_buffer_info;
Alexander Duycke4f74022012-01-31 02:59:44 +00001140 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
Alexander Duyckd3d00232011-07-15 02:31:25 +00001141 }
1142
Alexander Duyck729739b2012-02-08 07:51:06 +00001143 /* unmap any remaining paged data */
1144 if (dma_unmap_len(tx_buffer, len)) {
1145 dma_unmap_page(tx_ring->dev,
1146 dma_unmap_addr(tx_buffer, dma),
1147 dma_unmap_len(tx_buffer, len),
1148 DMA_TO_DEVICE);
1149 dma_unmap_len_set(tx_buffer, len, 0);
1150 }
1151 }
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08001152
Alexander Duyck729739b2012-02-08 07:51:06 +00001153 /* move us one more past the eop_desc for start of next pkt */
1154 tx_buffer++;
1155 tx_desc++;
1156 i++;
1157 if (unlikely(!i)) {
1158 i -= tx_ring->count;
1159 tx_buffer = tx_ring->tx_buffer_info;
1160 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
1161 }
1162
1163 /* issue prefetch for next Tx descriptor */
1164 prefetch(tx_desc);
1165
1166 /* update budget accounting */
1167 budget--;
1168 } while (likely(budget));
1169
1170 i += tx_ring->count;
Auke Kok9a799d72007-09-15 14:07:45 -07001171 tx_ring->next_to_clean = i;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001172 u64_stats_update_begin(&tx_ring->syncp);
Alexander Duyckb9537992010-11-16 19:26:58 -08001173 tx_ring->stats.bytes += total_bytes;
Alexander Duyckbd198052011-06-11 01:45:08 +00001174 tx_ring->stats.packets += total_packets;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001175 u64_stats_update_end(&tx_ring->syncp);
Alexander Duyckbd198052011-06-11 01:45:08 +00001176 q_vector->tx.total_bytes += total_bytes;
1177 q_vector->tx.total_packets += total_packets;
Alexander Duyckb9537992010-11-16 19:26:58 -08001178
John Fastabendc84d3242010-11-16 19:27:12 -08001179 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
Alexander Duyckb9537992010-11-16 19:26:58 -08001180 /* schedule immediate reset if we believe we hung */
John Fastabendc84d3242010-11-16 19:27:12 -08001181 struct ixgbe_hw *hw = &adapter->hw;
John Fastabendc84d3242010-11-16 19:27:12 -08001182 e_err(drv, "Detected Tx Unit Hang\n"
1183 " Tx Queue <%d>\n"
1184 " TDH, TDT <%x>, <%x>\n"
1185 " next_to_use <%x>\n"
1186 " next_to_clean <%x>\n"
1187 "tx_buffer_info[next_to_clean]\n"
1188 " time_stamp <%lx>\n"
1189 " jiffies <%lx>\n",
1190 tx_ring->queue_index,
1191 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
1192 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
Alexander Duyckd3d00232011-07-15 02:31:25 +00001193 tx_ring->next_to_use, i,
1194 tx_ring->tx_buffer_info[i].time_stamp, jiffies);
John Fastabendc84d3242010-11-16 19:27:12 -08001195
1196 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
1197
1198 e_info(probe,
1199 "tx hang %d detected on queue %d, resetting adapter\n",
1200 adapter->tx_timeout_count + 1, tx_ring->queue_index);
1201
1202 /* schedule immediate reset if we believe we hung */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001203 ixgbe_tx_timeout_reset(adapter);
Alexander Duyckb9537992010-11-16 19:26:58 -08001204
1205 /* the adapter is about to reset, no point in enabling stuff */
Alexander Duyck59224552011-08-31 00:01:06 +00001206 return true;
Alexander Duyckb9537992010-11-16 19:26:58 -08001207 }
Auke Kok9a799d72007-09-15 14:07:45 -07001208
Alexander Duyckb2d96e02012-02-07 08:14:33 +00001209 netdev_tx_completed_queue(txring_txq(tx_ring),
1210 total_packets, total_bytes);
1211
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001212#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Alexander Duyck30065e62011-07-15 03:05:14 +00001213 if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&
Alexander Duyck7d4987d2011-05-27 05:31:37 +00001214 (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001215 /* Make sure that anybody stopping the queue after this
1216 * sees the new next_to_clean.
1217 */
1218 smp_mb();
Alexander Duyck729739b2012-02-08 07:51:06 +00001219 if (__netif_subqueue_stopped(tx_ring->netdev,
1220 tx_ring->queue_index)
1221 && !test_bit(__IXGBE_DOWN, &adapter->state)) {
1222 netif_wake_subqueue(tx_ring->netdev,
1223 tx_ring->queue_index);
Alexander Duyck5b7da512010-11-16 19:26:50 -08001224 ++tx_ring->tx_stats.restart_queue;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08001225 }
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001226 }
Auke Kok9a799d72007-09-15 14:07:45 -07001227
Alexander Duyck59224552011-08-31 00:01:06 +00001228 return !!budget;
Auke Kok9a799d72007-09-15 14:07:45 -07001229}
1230
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001231#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001232static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001233 struct ixgbe_ring *tx_ring,
1234 int cpu)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001235{
Don Skidmoreee5f7842009-11-06 12:56:20 +00001236 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001237 u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
1238 u16 reg_offset;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001239
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001240 switch (hw->mac.type) {
1241 case ixgbe_mac_82598EB:
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001242 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001243 break;
1244 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08001245 case ixgbe_mac_X540:
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001246 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx);
1247 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599;
1248 break;
1249 default:
1250 /* for unknown hardware do not write register */
1251 return;
1252 }
1253
1254 /*
1255 * We can enable relaxed ordering for reads, but not writes when
1256 * DCA is enabled. This is due to a known issue in some chipsets
1257 * which will cause the DCA tag to be cleared.
1258 */
1259 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN |
1260 IXGBE_DCA_TXCTRL_DATA_RRO_EN |
1261 IXGBE_DCA_TXCTRL_DESC_DCA_EN;
1262
1263 IXGBE_WRITE_REG(hw, reg_offset, txctrl);
1264}
1265
1266static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
1267 struct ixgbe_ring *rx_ring,
1268 int cpu)
1269{
1270 struct ixgbe_hw *hw = &adapter->hw;
1271 u32 rxctrl = dca3_get_tag(rx_ring->dev, cpu);
1272 u8 reg_idx = rx_ring->reg_idx;
1273
1274
1275 switch (hw->mac.type) {
1276 case ixgbe_mac_82599EB:
1277 case ixgbe_mac_X540:
1278 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599;
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001279 break;
1280 default:
1281 break;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001282 }
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001283
1284 /*
1285 * We can enable relaxed ordering for reads, but not writes when
1286 * DCA is enabled. This is due to a known issue in some chipsets
1287 * which will cause the DCA tag to be cleared.
1288 */
1289 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN |
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001290 IXGBE_DCA_RXCTRL_DESC_DCA_EN;
1291
1292 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001293}
1294
1295static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
1296{
1297 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001298 struct ixgbe_ring *ring;
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001299 int cpu = get_cpu();
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001300
1301 if (q_vector->cpu == cpu)
1302 goto out_no_update;
1303
Alexander Duycka5579282012-02-08 07:50:04 +00001304 ixgbe_for_each_ring(ring, q_vector->tx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001305 ixgbe_update_tx_dca(adapter, ring, cpu);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001306
Alexander Duycka5579282012-02-08 07:50:04 +00001307 ixgbe_for_each_ring(ring, q_vector->rx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001308 ixgbe_update_rx_dca(adapter, ring, cpu);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001309
1310 q_vector->cpu = cpu;
1311out_no_update:
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001312 put_cpu();
1313}
1314
1315static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
1316{
1317 int i;
1318
1319 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
1320 return;
1321
Alexander Duycke35ec122009-05-21 13:07:12 +00001322 /* always use CB2 mode, difference is masked in the CB driver */
1323 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
1324
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00001325 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001326 adapter->q_vector[i]->cpu = -1;
1327 ixgbe_update_dca(adapter->q_vector[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001328 }
1329}
1330
1331static int __ixgbe_notify_dca(struct device *dev, void *data)
1332{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08001333 struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001334 unsigned long event = *(unsigned long *)data;
1335
Don Skidmore2a72c312011-07-20 02:27:05 +00001336 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001337 return 0;
1338
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001339 switch (event) {
1340 case DCA_PROVIDER_ADD:
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07001341 /* if we're already enabled, don't do it again */
1342 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1343 break;
Denis V. Lunev652f0932008-03-27 14:39:17 +03001344 if (dca_add_requester(dev) == 0) {
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07001345 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001346 ixgbe_setup_dca(adapter);
1347 break;
1348 }
1349 /* Fall Through since DCA is disabled. */
1350 case DCA_PROVIDER_REMOVE:
1351 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
1352 dca_remove_requester(dev);
1353 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
1354 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
1355 }
1356 break;
1357 }
1358
Denis V. Lunev652f0932008-03-27 14:39:17 +03001359 return 0;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001360}
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001361
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001362#endif /* CONFIG_IXGBE_DCA */
Alexander Duyck8a0da212012-01-31 02:59:49 +00001363static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
1364 union ixgbe_adv_rx_desc *rx_desc,
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001365 struct sk_buff *skb)
1366{
Alexander Duyck8a0da212012-01-31 02:59:49 +00001367 if (ring->netdev->features & NETIF_F_RXHASH)
Tom Herbert38da98532013-12-18 16:47:04 +00001368 skb_set_hash(skb,
1369 le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
1370 PKT_HASH_TYPE_L3);
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001371}
1372
Alexander Duyckf8003262012-03-03 02:35:52 +00001373#ifdef IXGBE_FCOE
Auke Kok9a799d72007-09-15 14:07:45 -07001374/**
Alexander Duyckff886df2011-06-11 01:45:13 +00001375 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
Alexander Duyck57efd442012-06-25 21:54:46 +00001376 * @ring: structure containing ring specific data
Alexander Duyckff886df2011-06-11 01:45:13 +00001377 * @rx_desc: advanced rx descriptor
1378 *
1379 * Returns : true if it is FCoE pkt
1380 */
Alexander Duyck57efd442012-06-25 21:54:46 +00001381static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring,
Alexander Duyckff886df2011-06-11 01:45:13 +00001382 union ixgbe_adv_rx_desc *rx_desc)
1383{
1384 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1385
Alexander Duyck57efd442012-06-25 21:54:46 +00001386 return test_bit(__IXGBE_RX_FCOE, &ring->state) &&
Alexander Duyckff886df2011-06-11 01:45:13 +00001387 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) ==
1388 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE <<
1389 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT)));
1390}
1391
Alexander Duyckf8003262012-03-03 02:35:52 +00001392#endif /* IXGBE_FCOE */
Alexander Duyckff886df2011-06-11 01:45:13 +00001393/**
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001394 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
Alexander Duyck8a0da212012-01-31 02:59:49 +00001395 * @ring: structure containing ring specific data
1396 * @rx_desc: current Rx descriptor being processed
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001397 * @skb: skb currently being received and modified
1398 **/
Alexander Duyck8a0da212012-01-31 02:59:49 +00001399static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
Don Skidmore8bae1b22009-07-23 18:00:39 +00001400 union ixgbe_adv_rx_desc *rx_desc,
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001401 struct sk_buff *skb)
Auke Kok9a799d72007-09-15 14:07:45 -07001402{
Don Skidmore3f207802014-12-23 07:40:34 +00001403 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1404 __le16 hdr_info = rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
1405 bool encap_pkt = false;
1406
Alexander Duyck8a0da212012-01-31 02:59:49 +00001407 skb_checksum_none_assert(skb);
Auke Kok9a799d72007-09-15 14:07:45 -07001408
Jesse Brandeburg712744b2008-08-26 04:26:56 -07001409 /* Rx csum disabled */
Alexander Duyck8a0da212012-01-31 02:59:49 +00001410 if (!(ring->netdev->features & NETIF_F_RXCSUM))
Auke Kok9a799d72007-09-15 14:07:45 -07001411 return;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001412
Don Skidmore3f207802014-12-23 07:40:34 +00001413 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) &&
1414 (hdr_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_TUNNEL >> 16))) {
1415 encap_pkt = true;
1416 skb->encapsulation = 1;
1417 skb->ip_summed = CHECKSUM_NONE;
1418 }
1419
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001420 /* if IP and error */
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001421 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
1422 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
Alexander Duyck8a0da212012-01-31 02:59:49 +00001423 ring->rx_stats.csum_err++;
Auke Kok9a799d72007-09-15 14:07:45 -07001424 return;
1425 }
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001426
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001427 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS))
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001428 return;
1429
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001430 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
Don Skidmore8bae1b22009-07-23 18:00:39 +00001431 /*
1432 * 82599 errata, UDP frames with a 0 checksum can be marked as
1433 * checksum errors.
1434 */
Alexander Duyck8a0da212012-01-31 02:59:49 +00001435 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) &&
1436 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state))
Don Skidmore8bae1b22009-07-23 18:00:39 +00001437 return;
1438
Alexander Duyck8a0da212012-01-31 02:59:49 +00001439 ring->rx_stats.csum_err++;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001440 return;
1441 }
1442
Auke Kok9a799d72007-09-15 14:07:45 -07001443 /* It must be a TCP or UDP packet with a valid checksum */
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001444 skb->ip_summed = CHECKSUM_UNNECESSARY;
Don Skidmore3f207802014-12-23 07:40:34 +00001445 if (encap_pkt) {
1446 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS))
1447 return;
1448
1449 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) {
1450 ring->rx_stats.csum_err++;
1451 return;
1452 }
1453 /* If we checked the outer header let the stack know */
1454 skb->csum_level = 1;
1455 }
Auke Kok9a799d72007-09-15 14:07:45 -07001456}
1457
Alexander Duyckf990b792012-01-31 02:59:34 +00001458static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
1459 struct ixgbe_rx_buffer *bi)
1460{
1461 struct page *page = bi->page;
Alexander Duyck18cb6522014-11-14 00:56:29 +00001462 dma_addr_t dma;
Alexander Duyckf990b792012-01-31 02:59:34 +00001463
Alexander Duyckf8003262012-03-03 02:35:52 +00001464 /* since we are recycling buffers we should seldom need to alloc */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001465 if (likely(page))
Alexander Duyckf990b792012-01-31 02:59:34 +00001466 return true;
1467
Alexander Duyckf8003262012-03-03 02:35:52 +00001468 /* alloc new page for storage */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001469 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring));
1470 if (unlikely(!page)) {
1471 rx_ring->rx_stats.alloc_rx_page_failed++;
1472 return false;
Alexander Duyckf990b792012-01-31 02:59:34 +00001473 }
1474
Alexander Duyckf8003262012-03-03 02:35:52 +00001475 /* map page for use */
1476 dma = dma_map_page(rx_ring->dev, page, 0,
1477 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
Alexander Duyckf990b792012-01-31 02:59:34 +00001478
Alexander Duyckf8003262012-03-03 02:35:52 +00001479 /*
1480 * if mapping failed free memory back to system since
1481 * there isn't much point in holding memory we can't use
1482 */
1483 if (dma_mapping_error(rx_ring->dev, dma)) {
Alexander Duyckdd411ec2012-04-06 04:24:50 +00001484 __free_pages(page, ixgbe_rx_pg_order(rx_ring));
Alexander Duyckf8003262012-03-03 02:35:52 +00001485
Alexander Duyckf990b792012-01-31 02:59:34 +00001486 rx_ring->rx_stats.alloc_rx_page_failed++;
1487 return false;
1488 }
1489
Alexander Duyckf8003262012-03-03 02:35:52 +00001490 bi->dma = dma;
Alexander Duyck18cb6522014-11-14 00:56:29 +00001491 bi->page = page;
Alexander Duyckafaa9452012-07-20 08:08:12 +00001492 bi->page_offset = 0;
Alexander Duyckf8003262012-03-03 02:35:52 +00001493
Alexander Duyckf990b792012-01-31 02:59:34 +00001494 return true;
1495}
1496
Auke Kok9a799d72007-09-15 14:07:45 -07001497/**
Alexander Duyckf990b792012-01-31 02:59:34 +00001498 * ixgbe_alloc_rx_buffers - Replace used receive buffers
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001499 * @rx_ring: ring to place buffers on
1500 * @cleaned_count: number of buffers to replace
Auke Kok9a799d72007-09-15 14:07:45 -07001501 **/
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001502void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
Auke Kok9a799d72007-09-15 14:07:45 -07001503{
Auke Kok9a799d72007-09-15 14:07:45 -07001504 union ixgbe_adv_rx_desc *rx_desc;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001505 struct ixgbe_rx_buffer *bi;
Alexander Duyckd5f398e2010-11-16 19:26:48 -08001506 u16 i = rx_ring->next_to_use;
Auke Kok9a799d72007-09-15 14:07:45 -07001507
Alexander Duyckf8003262012-03-03 02:35:52 +00001508 /* nothing to do */
1509 if (!cleaned_count)
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001510 return;
1511
Alexander Duycke4f74022012-01-31 02:59:44 +00001512 rx_desc = IXGBE_RX_DESC(rx_ring, i);
Alexander Duyckf990b792012-01-31 02:59:34 +00001513 bi = &rx_ring->rx_buffer_info[i];
1514 i -= rx_ring->count;
1515
Alexander Duyckf8003262012-03-03 02:35:52 +00001516 do {
1517 if (!ixgbe_alloc_mapped_page(rx_ring, bi))
Alexander Duyckf990b792012-01-31 02:59:34 +00001518 break;
Auke Kok9a799d72007-09-15 14:07:45 -07001519
Alexander Duyckf8003262012-03-03 02:35:52 +00001520 /*
1521 * Refresh the desc even if buffer_addrs didn't change
1522 * because each write-back erases this info.
1523 */
1524 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
Auke Kok9a799d72007-09-15 14:07:45 -07001525
Alexander Duyckf990b792012-01-31 02:59:34 +00001526 rx_desc++;
1527 bi++;
Auke Kok9a799d72007-09-15 14:07:45 -07001528 i++;
Alexander Duyckf990b792012-01-31 02:59:34 +00001529 if (unlikely(!i)) {
Alexander Duycke4f74022012-01-31 02:59:44 +00001530 rx_desc = IXGBE_RX_DESC(rx_ring, 0);
Alexander Duyckf990b792012-01-31 02:59:34 +00001531 bi = rx_ring->rx_buffer_info;
1532 i -= rx_ring->count;
1533 }
1534
Alexander Duyck18cb6522014-11-14 00:56:29 +00001535 /* clear the status bits for the next_to_use descriptor */
1536 rx_desc->wb.upper.status_error = 0;
Alexander Duyckf8003262012-03-03 02:35:52 +00001537
1538 cleaned_count--;
1539 } while (cleaned_count);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001540
Alexander Duyckf990b792012-01-31 02:59:34 +00001541 i += rx_ring->count;
1542
Alexander Duyckad435ec2014-11-14 00:56:35 +00001543 if (rx_ring->next_to_use != i) {
1544 rx_ring->next_to_use = i;
1545
1546 /* update next to alloc since we have filled the ring */
1547 rx_ring->next_to_alloc = i;
1548
1549 /* Force memory writes to complete before letting h/w
1550 * know there are new descriptors to fetch. (Only
1551 * applicable for weak-ordered memory model archs,
1552 * such as IA-64).
1553 */
1554 wmb();
1555 writel(i, rx_ring->tail);
1556 }
Auke Kok9a799d72007-09-15 14:07:45 -07001557}
1558
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001559static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
1560 struct sk_buff *skb)
1561{
Alexander Duyckf8003262012-03-03 02:35:52 +00001562 u16 hdr_len = skb_headlen(skb);
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001563
1564 /* set gso_size to avoid messing up TCP MSS */
1565 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
1566 IXGBE_CB(skb)->append_cnt);
Alexander Duyck96be80a2013-02-12 09:45:44 +00001567 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001568}
1569
1570static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
1571 struct sk_buff *skb)
1572{
1573 /* if append_cnt is 0 then frame is not RSC */
1574 if (!IXGBE_CB(skb)->append_cnt)
1575 return;
1576
1577 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt;
1578 rx_ring->rx_stats.rsc_flush++;
1579
1580 ixgbe_set_rsc_gso_size(rx_ring, skb);
1581
1582 /* gso_size is computed using append_cnt so always clear it last */
1583 IXGBE_CB(skb)->append_cnt = 0;
1584}
1585
Alexander Duyck8a0da212012-01-31 02:59:49 +00001586/**
1587 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
1588 * @rx_ring: rx descriptor ring packet is being transacted on
1589 * @rx_desc: pointer to the EOP Rx descriptor
1590 * @skb: pointer to current skb being populated
1591 *
1592 * This function checks the ring, descriptor, and packet information in
1593 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
1594 * other fields within the skb.
1595 **/
1596static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
1597 union ixgbe_adv_rx_desc *rx_desc,
1598 struct sk_buff *skb)
1599{
John Fastabend43e95f12012-05-15 06:12:17 +00001600 struct net_device *dev = rx_ring->netdev;
1601
Alexander Duyck8a0da212012-01-31 02:59:49 +00001602 ixgbe_update_rsc_stats(rx_ring, skb);
1603
1604 ixgbe_rx_hash(rx_ring, rx_desc, skb);
1605
1606 ixgbe_rx_checksum(rx_ring, rx_desc, skb);
1607
Jakub Kicinskieda183c2014-04-02 10:33:28 +00001608 if (unlikely(ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_TS)))
1609 ixgbe_ptp_rx_hwtstamp(rx_ring->q_vector->adapter, skb);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00001610
Patrick McHardyf6469682013-04-19 02:04:27 +00001611 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
John Fastabend43e95f12012-05-15 06:12:17 +00001612 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
Alexander Duyck8a0da212012-01-31 02:59:49 +00001613 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
Patrick McHardy86a9bad2013-04-19 02:04:30 +00001614 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
Alexander Duyck8a0da212012-01-31 02:59:49 +00001615 }
1616
1617 skb_record_rx_queue(skb, rx_ring->queue_index);
1618
John Fastabend43e95f12012-05-15 06:12:17 +00001619 skb->protocol = eth_type_trans(skb, dev);
Alexander Duyck8a0da212012-01-31 02:59:49 +00001620}
1621
1622static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
1623 struct sk_buff *skb)
1624{
Jacob Kellerb4640032013-10-01 04:33:54 -07001625 if (ixgbe_qv_busy_polling(q_vector))
Eliezer Tamir5a85e732013-06-10 11:40:20 +03001626 netif_receive_skb(skb);
Alexander Duyck8a0da212012-01-31 02:59:49 +00001627 else
Alexander Duyck856f6062015-02-25 17:45:54 +00001628 napi_gro_receive(&q_vector->napi, skb);
Alexander Duyckaa801752010-11-16 19:27:02 -08001629}
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001630
Alexander Duyckf8003262012-03-03 02:35:52 +00001631/**
1632 * ixgbe_is_non_eop - process handling of non-EOP buffers
1633 * @rx_ring: Rx ring being processed
1634 * @rx_desc: Rx descriptor for current buffer
1635 * @skb: Current socket buffer containing buffer in progress
1636 *
1637 * This function updates next to clean. If the buffer is an EOP buffer
1638 * this function exits returning false, otherwise it will place the
1639 * sk_buff in the next buffer to be chained and return true indicating
1640 * that this is in fact a non-EOP buffer.
1641 **/
1642static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring,
1643 union ixgbe_adv_rx_desc *rx_desc,
1644 struct sk_buff *skb)
1645{
1646 u32 ntc = rx_ring->next_to_clean + 1;
1647
1648 /* fetch, update, and store next to clean */
1649 ntc = (ntc < rx_ring->count) ? ntc : 0;
1650 rx_ring->next_to_clean = ntc;
1651
1652 prefetch(IXGBE_RX_DESC(rx_ring, ntc));
1653
Alexander Duyck5a02cbd2012-07-20 08:08:51 +00001654 /* update RSC append count if present */
1655 if (ring_is_rsc_enabled(rx_ring)) {
1656 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data &
1657 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK);
1658
1659 if (unlikely(rsc_enabled)) {
1660 u32 rsc_cnt = le32_to_cpu(rsc_enabled);
1661
1662 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT;
1663 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1;
1664
1665 /* update ntc based on RSC value */
1666 ntc = le32_to_cpu(rx_desc->wb.upper.status_error);
1667 ntc &= IXGBE_RXDADV_NEXTP_MASK;
1668 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT;
1669 }
1670 }
1671
1672 /* if we are the last buffer then there is nothing else to do */
Alexander Duyckf8003262012-03-03 02:35:52 +00001673 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
1674 return false;
1675
Alexander Duyckf8003262012-03-03 02:35:52 +00001676 /* place skb in next buffer to be received */
1677 rx_ring->rx_buffer_info[ntc].skb = skb;
1678 rx_ring->rx_stats.non_eop_descs++;
1679
1680 return true;
1681}
1682
1683/**
Alexander Duyck19861ce2012-07-20 08:08:33 +00001684 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
1685 * @rx_ring: rx descriptor ring packet is being transacted on
1686 * @skb: pointer to current skb being adjusted
1687 *
1688 * This function is an ixgbe specific version of __pskb_pull_tail. The
1689 * main difference between this version and the original function is that
1690 * this function can make several assumptions about the state of things
1691 * that allow for significant optimizations versus the standard function.
1692 * As a result we can do things like drop a frag and maintain an accurate
1693 * truesize for the skb.
1694 */
1695static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring,
1696 struct sk_buff *skb)
1697{
1698 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1699 unsigned char *va;
1700 unsigned int pull_len;
1701
1702 /*
1703 * it is valid to use page_address instead of kmap since we are
1704 * working with pages allocated out of the lomem pool per
1705 * alloc_page(GFP_ATOMIC)
1706 */
1707 va = skb_frag_address(frag);
1708
1709 /*
1710 * we need the header to contain the greater of either ETH_HLEN or
1711 * 60 bytes if the skb->len is less than 60 for skb_pad.
1712 */
Alexander Duyck8496e332014-09-05 19:22:18 -04001713 pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE);
Alexander Duyck19861ce2012-07-20 08:08:33 +00001714
1715 /* align pull length to size of long to optimize memcpy performance */
1716 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
1717
1718 /* update all of the pointers */
1719 skb_frag_size_sub(frag, pull_len);
1720 frag->page_offset += pull_len;
1721 skb->data_len -= pull_len;
1722 skb->tail += pull_len;
Alexander Duyck19861ce2012-07-20 08:08:33 +00001723}
1724
1725/**
Alexander Duyck42073d92012-07-20 08:08:28 +00001726 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
1727 * @rx_ring: rx descriptor ring packet is being transacted on
1728 * @skb: pointer to current skb being updated
1729 *
1730 * This function provides a basic DMA sync up for the first fragment of an
1731 * skb. The reason for doing this is that the first fragment cannot be
1732 * unmapped until we have reached the end of packet descriptor for a buffer
1733 * chain.
1734 */
1735static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring,
1736 struct sk_buff *skb)
1737{
1738 /* if the page was released unmap it, else just sync our portion */
1739 if (unlikely(IXGBE_CB(skb)->page_released)) {
1740 dma_unmap_page(rx_ring->dev, IXGBE_CB(skb)->dma,
1741 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
1742 IXGBE_CB(skb)->page_released = false;
1743 } else {
1744 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1745
1746 dma_sync_single_range_for_cpu(rx_ring->dev,
1747 IXGBE_CB(skb)->dma,
1748 frag->page_offset,
1749 ixgbe_rx_bufsz(rx_ring),
1750 DMA_FROM_DEVICE);
1751 }
1752 IXGBE_CB(skb)->dma = 0;
1753}
1754
1755/**
Alexander Duyckf8003262012-03-03 02:35:52 +00001756 * ixgbe_cleanup_headers - Correct corrupted or empty headers
1757 * @rx_ring: rx descriptor ring packet is being transacted on
1758 * @rx_desc: pointer to the EOP Rx descriptor
1759 * @skb: pointer to current skb being fixed
1760 *
1761 * Check for corrupted packet headers caused by senders on the local L2
1762 * embedded NIC switch not setting up their Tx Descriptors right. These
1763 * should be very rare.
1764 *
1765 * Also address the case where we are pulling data in on pages only
1766 * and as such no data is present in the skb header.
1767 *
1768 * In addition if skb is not at least 60 bytes we need to pad it so that
1769 * it is large enough to qualify as a valid Ethernet frame.
1770 *
1771 * Returns true if an error was encountered and skb was freed.
1772 **/
1773static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
1774 union ixgbe_adv_rx_desc *rx_desc,
1775 struct sk_buff *skb)
1776{
Alexander Duyckf8003262012-03-03 02:35:52 +00001777 struct net_device *netdev = rx_ring->netdev;
Alexander Duyckf8003262012-03-03 02:35:52 +00001778
1779 /* verify that the packet does not have any known errors */
1780 if (unlikely(ixgbe_test_staterr(rx_desc,
1781 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) &&
1782 !(netdev->features & NETIF_F_RXALL))) {
1783 dev_kfree_skb_any(skb);
1784 return true;
1785 }
1786
Alexander Duyck19861ce2012-07-20 08:08:33 +00001787 /* place header in linear portion of buffer */
Alexander Duyckcf3fe7a2012-07-20 08:08:39 +00001788 if (skb_is_nonlinear(skb))
1789 ixgbe_pull_tail(rx_ring, skb);
Alexander Duyckf8003262012-03-03 02:35:52 +00001790
Alexander Duyck57efd442012-06-25 21:54:46 +00001791#ifdef IXGBE_FCOE
1792 /* do not attempt to pad FCoE Frames as this will disrupt DDP */
1793 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc))
1794 return false;
1795
1796#endif
Alexander Duycka94d9e22014-12-03 08:17:39 -08001797 /* if eth_skb_pad returns an error the skb was freed */
1798 if (eth_skb_pad(skb))
1799 return true;
Alexander Duyckf8003262012-03-03 02:35:52 +00001800
1801 return false;
1802}
1803
1804/**
Alexander Duyckf8003262012-03-03 02:35:52 +00001805 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
1806 * @rx_ring: rx descriptor ring to store buffers on
1807 * @old_buff: donor buffer to have page reused
1808 *
Alexander Duyck0549ae22012-07-20 08:08:18 +00001809 * Synchronizes page for reuse by the adapter
Alexander Duyckf8003262012-03-03 02:35:52 +00001810 **/
1811static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring,
1812 struct ixgbe_rx_buffer *old_buff)
1813{
1814 struct ixgbe_rx_buffer *new_buff;
1815 u16 nta = rx_ring->next_to_alloc;
Alexander Duyckf8003262012-03-03 02:35:52 +00001816
1817 new_buff = &rx_ring->rx_buffer_info[nta];
1818
1819 /* update, and store next to alloc */
1820 nta++;
1821 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
1822
1823 /* transfer page from old buffer to new buffer */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001824 *new_buff = *old_buff;
Alexander Duyckf8003262012-03-03 02:35:52 +00001825
1826 /* sync the buffer for use by the device */
1827 dma_sync_single_range_for_device(rx_ring->dev, new_buff->dma,
Alexander Duyck0549ae22012-07-20 08:08:18 +00001828 new_buff->page_offset,
1829 ixgbe_rx_bufsz(rx_ring),
Alexander Duyckf8003262012-03-03 02:35:52 +00001830 DMA_FROM_DEVICE);
Alexander Duyckf8003262012-03-03 02:35:52 +00001831}
1832
Alexander Duyck18cb6522014-11-14 00:56:29 +00001833static inline bool ixgbe_page_is_reserved(struct page *page)
1834{
1835 return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
1836}
1837
Alexander Duyckf8003262012-03-03 02:35:52 +00001838/**
1839 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
1840 * @rx_ring: rx descriptor ring to transact packets on
1841 * @rx_buffer: buffer containing page to add
1842 * @rx_desc: descriptor containing length of buffer written by hardware
1843 * @skb: sk_buff to place the data into
1844 *
Alexander Duyck0549ae22012-07-20 08:08:18 +00001845 * This function will add the data contained in rx_buffer->page to the skb.
1846 * This is done either through a direct copy if the data in the buffer is
1847 * less than the skb header size, otherwise it will just attach the page as
1848 * a frag to the skb.
1849 *
1850 * The function will then update the page offset if necessary and return
1851 * true if the buffer can be reused by the adapter.
Alexander Duyckf8003262012-03-03 02:35:52 +00001852 **/
Alexander Duyck0549ae22012-07-20 08:08:18 +00001853static bool ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring,
Alexander Duyckf8003262012-03-03 02:35:52 +00001854 struct ixgbe_rx_buffer *rx_buffer,
Alexander Duyck0549ae22012-07-20 08:08:18 +00001855 union ixgbe_adv_rx_desc *rx_desc,
1856 struct sk_buff *skb)
Alexander Duyckf8003262012-03-03 02:35:52 +00001857{
Alexander Duyck0549ae22012-07-20 08:08:18 +00001858 struct page *page = rx_buffer->page;
1859 unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
Alexander Duyck09816fb2012-07-20 08:08:23 +00001860#if (PAGE_SIZE < 8192)
Alexander Duyck0549ae22012-07-20 08:08:18 +00001861 unsigned int truesize = ixgbe_rx_bufsz(rx_ring);
Alexander Duyck09816fb2012-07-20 08:08:23 +00001862#else
1863 unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
1864 unsigned int last_offset = ixgbe_rx_pg_size(rx_ring) -
1865 ixgbe_rx_bufsz(rx_ring);
1866#endif
Alexander Duyck0549ae22012-07-20 08:08:18 +00001867
Alexander Duyckcf3fe7a2012-07-20 08:08:39 +00001868 if ((size <= IXGBE_RX_HDR_SIZE) && !skb_is_nonlinear(skb)) {
1869 unsigned char *va = page_address(page) + rx_buffer->page_offset;
1870
1871 memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
1872
Alexander Duyck18cb6522014-11-14 00:56:29 +00001873 /* page is not reserved, we can reuse buffer as-is */
1874 if (likely(!ixgbe_page_is_reserved(page)))
Alexander Duyckcf3fe7a2012-07-20 08:08:39 +00001875 return true;
1876
1877 /* this page cannot be reused so discard it */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001878 __free_pages(page, ixgbe_rx_pg_order(rx_ring));
Alexander Duyckcf3fe7a2012-07-20 08:08:39 +00001879 return false;
1880 }
1881
Alexander Duyck0549ae22012-07-20 08:08:18 +00001882 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
1883 rx_buffer->page_offset, size, truesize);
1884
Alexander Duyck09816fb2012-07-20 08:08:23 +00001885 /* avoid re-using remote pages */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001886 if (unlikely(ixgbe_page_is_reserved(page)))
Alexander Duyck09816fb2012-07-20 08:08:23 +00001887 return false;
1888
1889#if (PAGE_SIZE < 8192)
1890 /* if we are only owner of page we can reuse it */
1891 if (unlikely(page_count(page) != 1))
Alexander Duyck0549ae22012-07-20 08:08:18 +00001892 return false;
1893
1894 /* flip page offset to other buffer */
1895 rx_buffer->page_offset ^= truesize;
Alexander Duyck09816fb2012-07-20 08:08:23 +00001896#else
1897 /* move offset up to the next cache line */
1898 rx_buffer->page_offset += truesize;
1899
1900 if (rx_buffer->page_offset > last_offset)
1901 return false;
Alexander Duyck09816fb2012-07-20 08:08:23 +00001902#endif
Alexander Duyck0549ae22012-07-20 08:08:18 +00001903
Alexander Duyck18cb6522014-11-14 00:56:29 +00001904 /* Even if we own the page, we are not allowed to use atomic_set()
1905 * This would break get_page_unless_zero() users.
1906 */
1907 atomic_inc(&page->_count);
1908
Alexander Duyck0549ae22012-07-20 08:08:18 +00001909 return true;
Alexander Duyckf8003262012-03-03 02:35:52 +00001910}
1911
Alexander Duyck18806c92012-07-20 08:08:44 +00001912static struct sk_buff *ixgbe_fetch_rx_buffer(struct ixgbe_ring *rx_ring,
1913 union ixgbe_adv_rx_desc *rx_desc)
1914{
1915 struct ixgbe_rx_buffer *rx_buffer;
1916 struct sk_buff *skb;
1917 struct page *page;
1918
1919 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
1920 page = rx_buffer->page;
1921 prefetchw(page);
1922
1923 skb = rx_buffer->skb;
1924
1925 if (likely(!skb)) {
1926 void *page_addr = page_address(page) +
1927 rx_buffer->page_offset;
1928
1929 /* prefetch first cache line of first page */
1930 prefetch(page_addr);
1931#if L1_CACHE_BYTES < 128
1932 prefetch(page_addr + L1_CACHE_BYTES);
1933#endif
1934
1935 /* allocate a skb to store the frags */
Alexander Duyck67fd8932014-12-09 19:40:56 -08001936 skb = napi_alloc_skb(&rx_ring->q_vector->napi,
1937 IXGBE_RX_HDR_SIZE);
Alexander Duyck18806c92012-07-20 08:08:44 +00001938 if (unlikely(!skb)) {
1939 rx_ring->rx_stats.alloc_rx_buff_failed++;
1940 return NULL;
1941 }
1942
1943 /*
1944 * we will be copying header into skb->data in
1945 * pskb_may_pull so it is in our interest to prefetch
1946 * it now to avoid a possible cache miss
1947 */
1948 prefetchw(skb->data);
1949
1950 /*
1951 * Delay unmapping of the first packet. It carries the
1952 * header information, HW may still access the header
1953 * after the writeback. Only unmap it when EOP is
1954 * reached
1955 */
1956 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
1957 goto dma_sync;
1958
1959 IXGBE_CB(skb)->dma = rx_buffer->dma;
1960 } else {
1961 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))
1962 ixgbe_dma_sync_frag(rx_ring, skb);
1963
1964dma_sync:
1965 /* we are reusing so sync this buffer for CPU use */
1966 dma_sync_single_range_for_cpu(rx_ring->dev,
1967 rx_buffer->dma,
1968 rx_buffer->page_offset,
1969 ixgbe_rx_bufsz(rx_ring),
1970 DMA_FROM_DEVICE);
Alexander Duyck18cb6522014-11-14 00:56:29 +00001971
1972 rx_buffer->skb = NULL;
Alexander Duyck18806c92012-07-20 08:08:44 +00001973 }
1974
1975 /* pull page into skb */
1976 if (ixgbe_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
1977 /* hand second half of page back to the ring */
1978 ixgbe_reuse_rx_page(rx_ring, rx_buffer);
1979 } else if (IXGBE_CB(skb)->dma == rx_buffer->dma) {
1980 /* the page has been released from the ring */
1981 IXGBE_CB(skb)->page_released = true;
1982 } else {
1983 /* we are not reusing the buffer so unmap it */
1984 dma_unmap_page(rx_ring->dev, rx_buffer->dma,
1985 ixgbe_rx_pg_size(rx_ring),
1986 DMA_FROM_DEVICE);
1987 }
1988
1989 /* clear contents of buffer_info */
Alexander Duyck18806c92012-07-20 08:08:44 +00001990 rx_buffer->page = NULL;
1991
1992 return skb;
Alexander Duyckf8003262012-03-03 02:35:52 +00001993}
1994
1995/**
1996 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
1997 * @q_vector: structure containing interrupt and ring information
1998 * @rx_ring: rx descriptor ring to transact packets on
1999 * @budget: Total limit on number of packets to process
2000 *
2001 * This function provides a "bounce buffer" approach to Rx interrupt
2002 * processing. The advantage to this is that on systems that have
2003 * expensive overhead for IOMMU access this provides a means of avoiding
2004 * it by maintaining the mapping of the page to the syste.
2005 *
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002006 * Returns amount of work completed
Alexander Duyckf8003262012-03-03 02:35:52 +00002007 **/
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002008static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002009 struct ixgbe_ring *rx_ring,
Alexander Duyckf4de00e2012-09-25 00:29:37 +00002010 const int budget)
Auke Kok9a799d72007-09-15 14:07:45 -07002011{
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002012 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Ben Greear3f2d1c02012-03-08 08:28:41 +00002013#ifdef IXGBE_FCOE
Alexander Duyckf8003262012-03-03 02:35:52 +00002014 struct ixgbe_adapter *adapter = q_vector->adapter;
Mark Rustad4ffdf912012-07-18 06:05:50 +00002015 int ddp_bytes;
2016 unsigned int mss = 0;
Yi Zou3d8fd382009-06-08 14:38:44 +00002017#endif /* IXGBE_FCOE */
Alexander Duyckf8003262012-03-03 02:35:52 +00002018 u16 cleaned_count = ixgbe_desc_unused(rx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07002019
Eric W. Biedermanfdabfc8a2014-03-14 18:00:41 -07002020 while (likely(total_rx_packets < budget)) {
Alexander Duyckf8003262012-03-03 02:35:52 +00002021 union ixgbe_adv_rx_desc *rx_desc;
2022 struct sk_buff *skb;
Auke Kok9a799d72007-09-15 14:07:45 -07002023
Alexander Duyckf8003262012-03-03 02:35:52 +00002024 /* return some buffers to hardware, one at a time is too slow */
2025 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
2026 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
2027 cleaned_count = 0;
2028 }
Auke Kok9a799d72007-09-15 14:07:45 -07002029
Alexander Duyck18806c92012-07-20 08:08:44 +00002030 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean);
Auke Kok9a799d72007-09-15 14:07:45 -07002031
Alexander Duyck124b74c2014-12-11 15:02:28 -08002032 if (!rx_desc->wb.upper.status_error)
Alexander Duyckf8003262012-03-03 02:35:52 +00002033 break;
Alexander Duyckc267fc12010-11-16 19:27:00 -08002034
Alexander Duyck124b74c2014-12-11 15:02:28 -08002035 /* This memory barrier is needed to keep us from reading
Alexander Duyckf8003262012-03-03 02:35:52 +00002036 * any other fields out of the rx_desc until we know the
Alexander Duyck124b74c2014-12-11 15:02:28 -08002037 * descriptor has been written back
Alexander Duyckf8003262012-03-03 02:35:52 +00002038 */
Alexander Duyck124b74c2014-12-11 15:02:28 -08002039 dma_rmb();
Auke Kok9a799d72007-09-15 14:07:45 -07002040
Alexander Duyck18806c92012-07-20 08:08:44 +00002041 /* retrieve a buffer from the ring */
2042 skb = ixgbe_fetch_rx_buffer(rx_ring, rx_desc);
Alexander Duyckf8003262012-03-03 02:35:52 +00002043
Alexander Duyck18806c92012-07-20 08:08:44 +00002044 /* exit if we failed to retrieve a buffer */
2045 if (!skb)
2046 break;
Alexander Duyck4c1975d2012-01-31 02:59:23 +00002047
Auke Kok9a799d72007-09-15 14:07:45 -07002048 cleaned_count++;
Alexander Duyckf8212f92009-04-27 22:42:37 +00002049
Alexander Duyckf8003262012-03-03 02:35:52 +00002050 /* place incomplete frames back on ring for completion */
2051 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb))
2052 continue;
Alexander Duyckf8212f92009-04-27 22:42:37 +00002053
Alexander Duyckf8003262012-03-03 02:35:52 +00002054 /* verify the packet layout is correct */
2055 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
2056 continue;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002057
2058 /* probably a little skewed due to removing CRC */
2059 total_rx_bytes += skb->len;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002060
Alexander Duyck8a0da212012-01-31 02:59:49 +00002061 /* populate checksum, timestamp, VLAN, and protocol */
2062 ixgbe_process_skb_fields(rx_ring, rx_desc, skb);
2063
Yi Zou332d4a72009-05-13 13:11:53 +00002064#ifdef IXGBE_FCOE
2065 /* if ddp, not passing to ULD unless for FCP_RSP or error */
Alexander Duyck57efd442012-06-25 21:54:46 +00002066 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) {
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00002067 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
Mark Rustad4ffdf912012-07-18 06:05:50 +00002068 /* include DDPed FCoE data */
2069 if (ddp_bytes > 0) {
2070 if (!mss) {
2071 mss = rx_ring->netdev->mtu -
2072 sizeof(struct fcoe_hdr) -
2073 sizeof(struct fc_frame_header) -
2074 sizeof(struct fcoe_crc_eof);
2075 if (mss > 512)
2076 mss &= ~511;
2077 }
2078 total_rx_bytes += ddp_bytes;
2079 total_rx_packets += DIV_ROUND_UP(ddp_bytes,
2080 mss);
2081 }
David S. Miller823dcd22011-08-20 10:39:12 -07002082 if (!ddp_bytes) {
2083 dev_kfree_skb_any(skb);
Alexander Duyckf8003262012-03-03 02:35:52 +00002084 continue;
David S. Miller823dcd22011-08-20 10:39:12 -07002085 }
Yi Zou3d8fd382009-06-08 14:38:44 +00002086 }
Alexander Duyckf8003262012-03-03 02:35:52 +00002087
Yi Zou332d4a72009-05-13 13:11:53 +00002088#endif /* IXGBE_FCOE */
Eliezer Tamir8b80cda2013-07-10 17:13:26 +03002089 skb_mark_napi_id(skb, &q_vector->napi);
Alexander Duyck8a0da212012-01-31 02:59:49 +00002090 ixgbe_rx_skb(q_vector, skb);
Auke Kok9a799d72007-09-15 14:07:45 -07002091
Alexander Duyckf8003262012-03-03 02:35:52 +00002092 /* update budget accounting */
Alexander Duyckf4de00e2012-09-25 00:29:37 +00002093 total_rx_packets++;
Eric W. Biedermanfdabfc8a2014-03-14 18:00:41 -07002094 }
Auke Kok9a799d72007-09-15 14:07:45 -07002095
Alexander Duyckc267fc12010-11-16 19:27:00 -08002096 u64_stats_update_begin(&rx_ring->syncp);
2097 rx_ring->stats.packets += total_rx_packets;
2098 rx_ring->stats.bytes += total_rx_bytes;
2099 u64_stats_update_end(&rx_ring->syncp);
Alexander Duyckbd198052011-06-11 01:45:08 +00002100 q_vector->rx.total_packets += total_rx_packets;
2101 q_vector->rx.total_bytes += total_rx_bytes;
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002102
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002103 return total_rx_packets;
Auke Kok9a799d72007-09-15 14:07:45 -07002104}
2105
Cong Wange0d10952013-08-01 11:10:25 +08002106#ifdef CONFIG_NET_RX_BUSY_POLL
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002107/* must be called with local_bh_disable()d */
2108static int ixgbe_low_latency_recv(struct napi_struct *napi)
2109{
2110 struct ixgbe_q_vector *q_vector =
2111 container_of(napi, struct ixgbe_q_vector, napi);
2112 struct ixgbe_adapter *adapter = q_vector->adapter;
2113 struct ixgbe_ring *ring;
2114 int found = 0;
2115
2116 if (test_bit(__IXGBE_DOWN, &adapter->state))
2117 return LL_FLUSH_FAILED;
2118
2119 if (!ixgbe_qv_lock_poll(q_vector))
2120 return LL_FLUSH_BUSY;
2121
2122 ixgbe_for_each_ring(ring, q_vector->rx) {
2123 found = ixgbe_clean_rx_irq(q_vector, ring, 4);
Jacob Kellerb4640032013-10-01 04:33:54 -07002124#ifdef BP_EXTENDED_STATS
Eliezer Tamir7e15b902013-06-10 11:40:31 +03002125 if (found)
2126 ring->stats.cleaned += found;
2127 else
2128 ring->stats.misses++;
2129#endif
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002130 if (found)
2131 break;
2132 }
2133
2134 ixgbe_qv_unlock_poll(q_vector);
2135
2136 return found;
2137}
Cong Wange0d10952013-08-01 11:10:25 +08002138#endif /* CONFIG_NET_RX_BUSY_POLL */
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002139
Auke Kok9a799d72007-09-15 14:07:45 -07002140/**
2141 * ixgbe_configure_msix - Configure MSI-X hardware
2142 * @adapter: board private structure
2143 *
2144 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
2145 * interrupts.
2146 **/
2147static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
2148{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002149 struct ixgbe_q_vector *q_vector;
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002150 int v_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002151 u32 mask;
Auke Kok9a799d72007-09-15 14:07:45 -07002152
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00002153 /* Populate MSIX to EITR Select */
2154 if (adapter->num_vfs > 32) {
2155 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2156 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2157 }
2158
Jesse Brandeburg4df10462009-03-13 22:15:31 +00002159 /*
2160 * Populate the IVAR table and set the ITR values to the
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002161 * corresponding register.
2162 */
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002163 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002164 struct ixgbe_ring *ring;
Alexander Duyck7a921c92009-05-06 10:43:28 +00002165 q_vector = adapter->q_vector[v_idx];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002166
Alexander Duycka5579282012-02-08 07:50:04 +00002167 ixgbe_for_each_ring(ring, q_vector->rx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002168 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002169
Alexander Duycka5579282012-02-08 07:50:04 +00002170 ixgbe_for_each_ring(ring, q_vector->tx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002171 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002172
Alexander Duyckfe49f042009-06-04 16:00:09 +00002173 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07002174 }
2175
Alexander Duyckbd508172010-11-16 19:27:03 -08002176 switch (adapter->hw.mac.type) {
2177 case ixgbe_mac_82598EB:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002178 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
Joe Perchese8e9f692010-09-07 21:34:53 +00002179 v_idx);
Alexander Duyckbd508172010-11-16 19:27:03 -08002180 break;
2181 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002182 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002183 case ixgbe_mac_X550:
2184 case ixgbe_mac_X550EM_x:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002185 ixgbe_set_ivar(adapter, -1, 1, v_idx);
Alexander Duyckbd508172010-11-16 19:27:03 -08002186 break;
Alexander Duyckbd508172010-11-16 19:27:03 -08002187 default:
2188 break;
2189 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002190 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
Auke Kok9a799d72007-09-15 14:07:45 -07002191
Jesse Brandeburg41fb9242008-09-11 19:55:58 -07002192 /* set up to autoclear timer, and the vectors */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002193 mask = IXGBE_EIMS_ENABLE_MASK;
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002194 mask &= ~(IXGBE_EIMS_OTHER |
2195 IXGBE_EIMS_MAILBOX |
2196 IXGBE_EIMS_LSC);
2197
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002198 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
Auke Kok9a799d72007-09-15 14:07:45 -07002199}
2200
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002201enum latency_range {
2202 lowest_latency = 0,
2203 low_latency = 1,
2204 bulk_latency = 2,
2205 latency_invalid = 255
2206};
2207
2208/**
2209 * ixgbe_update_itr - update the dynamic ITR value based on statistics
Alexander Duyckbd198052011-06-11 01:45:08 +00002210 * @q_vector: structure containing interrupt and ring information
2211 * @ring_container: structure containing ring performance data
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002212 *
2213 * Stores a new ITR value based on packets and byte
2214 * counts during the last interrupt. The advantage of per interrupt
2215 * computation is faster updates and more accurate ITR for the current
2216 * traffic pattern. Constants in this function were computed
2217 * based on theoretical maximum wire speed and thresholds were set based
2218 * on testing data as well as attempting to minimize response time
2219 * while increasing bulk throughput.
2220 * this functionality is controlled by the InterruptThrottleRate module
2221 * parameter (see ixgbe_param.c)
2222 **/
Alexander Duyckbd198052011-06-11 01:45:08 +00002223static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
2224 struct ixgbe_ring_container *ring_container)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002225{
Alexander Duyckbd198052011-06-11 01:45:08 +00002226 int bytes = ring_container->total_bytes;
2227 int packets = ring_container->total_packets;
2228 u32 timepassed_us;
Alexander Duyck621bd702012-02-08 07:50:20 +00002229 u64 bytes_perint;
Alexander Duyckbd198052011-06-11 01:45:08 +00002230 u8 itr_setting = ring_container->itr;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002231
2232 if (packets == 0)
Alexander Duyckbd198052011-06-11 01:45:08 +00002233 return;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002234
2235 /* simple throttlerate management
Alexander Duyck621bd702012-02-08 07:50:20 +00002236 * 0-10MB/s lowest (100000 ints/s)
2237 * 10-20MB/s low (20000 ints/s)
2238 * 20-1249MB/s bulk (8000 ints/s)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002239 */
2240 /* what was last interrupt timeslice? */
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002241 timepassed_us = q_vector->itr >> 2;
Don Skidmorebdbeefe2013-03-02 07:17:37 +00002242 if (timepassed_us == 0)
2243 return;
2244
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002245 bytes_perint = bytes / timepassed_us; /* bytes/usec */
2246
2247 switch (itr_setting) {
2248 case lowest_latency:
Alexander Duyck621bd702012-02-08 07:50:20 +00002249 if (bytes_perint > 10)
Alexander Duyckbd198052011-06-11 01:45:08 +00002250 itr_setting = low_latency;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002251 break;
2252 case low_latency:
Alexander Duyck621bd702012-02-08 07:50:20 +00002253 if (bytes_perint > 20)
Alexander Duyckbd198052011-06-11 01:45:08 +00002254 itr_setting = bulk_latency;
Alexander Duyck621bd702012-02-08 07:50:20 +00002255 else if (bytes_perint <= 10)
Alexander Duyckbd198052011-06-11 01:45:08 +00002256 itr_setting = lowest_latency;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002257 break;
2258 case bulk_latency:
Alexander Duyck621bd702012-02-08 07:50:20 +00002259 if (bytes_perint <= 20)
Alexander Duyckbd198052011-06-11 01:45:08 +00002260 itr_setting = low_latency;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002261 break;
2262 }
2263
Alexander Duyckbd198052011-06-11 01:45:08 +00002264 /* clear work counters since we have the values we need */
2265 ring_container->total_bytes = 0;
2266 ring_container->total_packets = 0;
2267
2268 /* write updated itr to ring container */
2269 ring_container->itr = itr_setting;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002270}
2271
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002272/**
2273 * ixgbe_write_eitr - write EITR register in hardware specific way
Alexander Duyckfe49f042009-06-04 16:00:09 +00002274 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002275 *
2276 * This function is made to be called by ethtool and by the driver
2277 * when it needs to update EITR registers at runtime. Hardware
2278 * specific quirks/differences are taken care of here.
2279 */
Alexander Duyckfe49f042009-06-04 16:00:09 +00002280void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002281{
Alexander Duyckfe49f042009-06-04 16:00:09 +00002282 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002283 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002284 int v_idx = q_vector->v_idx;
Alexander Duyck5d967eb2012-02-08 07:49:43 +00002285 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002286
Alexander Duyckbd508172010-11-16 19:27:03 -08002287 switch (adapter->hw.mac.type) {
2288 case ixgbe_mac_82598EB:
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002289 /* must write high and low 16 bits to reset counter */
2290 itr_reg |= (itr_reg << 16);
Alexander Duyckbd508172010-11-16 19:27:03 -08002291 break;
2292 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002293 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002294 case ixgbe_mac_X550:
2295 case ixgbe_mac_X550EM_x:
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002296 /*
2297 * set the WDIS bit to not clear the timer bits and cause an
2298 * immediate assertion of the interrupt
2299 */
2300 itr_reg |= IXGBE_EITR_CNT_WDIS;
Alexander Duyckbd508172010-11-16 19:27:03 -08002301 break;
2302 default:
2303 break;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002304 }
2305 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
2306}
2307
Alexander Duyckbd198052011-06-11 01:45:08 +00002308static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002309{
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002310 u32 new_itr = q_vector->itr;
Alexander Duyckbd198052011-06-11 01:45:08 +00002311 u8 current_itr;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002312
Alexander Duyckbd198052011-06-11 01:45:08 +00002313 ixgbe_update_itr(q_vector, &q_vector->tx);
2314 ixgbe_update_itr(q_vector, &q_vector->rx);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002315
Alexander Duyck08c88332011-06-11 01:45:03 +00002316 current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002317
2318 switch (current_itr) {
2319 /* counts and packets in update_itr are dependent on these numbers */
2320 case lowest_latency:
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002321 new_itr = IXGBE_100K_ITR;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002322 break;
2323 case low_latency:
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002324 new_itr = IXGBE_20K_ITR;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002325 break;
2326 case bulk_latency:
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002327 new_itr = IXGBE_8K_ITR;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002328 break;
Alexander Duyckbd198052011-06-11 01:45:08 +00002329 default:
2330 break;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002331 }
2332
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002333 if (new_itr != q_vector->itr) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00002334 /* do an exponential smoothing */
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002335 new_itr = (10 * new_itr * q_vector->itr) /
2336 ((9 * new_itr) + q_vector->itr);
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002337
Alexander Duyckbd198052011-06-11 01:45:08 +00002338 /* save the algorithm value here */
Alexander Duyck5d967eb2012-02-08 07:49:43 +00002339 q_vector->itr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002340
2341 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002342 }
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002343}
2344
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002345/**
Alexander Duyckde88eee2012-02-08 07:49:59 +00002346 * ixgbe_check_overtemp_subtask - check for over temperature
Alexander Duyckf0f97782011-04-22 04:08:09 +00002347 * @adapter: pointer to adapter
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002348 **/
Alexander Duyckf0f97782011-04-22 04:08:09 +00002349static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002350{
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002351 struct ixgbe_hw *hw = &adapter->hw;
2352 u32 eicr = adapter->interrupt_event;
2353
Alexander Duyckf0f97782011-04-22 04:08:09 +00002354 if (test_bit(__IXGBE_DOWN, &adapter->state))
Joe Perches7ca647b2010-09-07 21:35:40 +00002355 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002356
Alexander Duyckf0f97782011-04-22 04:08:09 +00002357 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2358 !(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
2359 return;
2360
2361 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2362
Joe Perches7ca647b2010-09-07 21:35:40 +00002363 switch (hw->device_id) {
Alexander Duyckf0f97782011-04-22 04:08:09 +00002364 case IXGBE_DEV_ID_82599_T3_LOM:
2365 /*
2366 * Since the warning interrupt is for both ports
2367 * we don't have to check if:
2368 * - This interrupt wasn't for our port.
2369 * - We may have missed the interrupt so always have to
2370 * check if we got a LSC
2371 */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002372 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) &&
Alexander Duyckf0f97782011-04-22 04:08:09 +00002373 !(eicr & IXGBE_EICR_LSC))
2374 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002375
Alexander Duyckf0f97782011-04-22 04:08:09 +00002376 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
Josh Hay3d292262012-12-15 03:28:19 +00002377 u32 speed;
Alexander Duyckf0f97782011-04-22 04:08:09 +00002378 bool link_up = false;
2379
Josh Hay3d292262012-12-15 03:28:19 +00002380 hw->mac.ops.check_link(hw, &speed, &link_up, false);
Joe Perches7ca647b2010-09-07 21:35:40 +00002381
Alexander Duyckf0f97782011-04-22 04:08:09 +00002382 if (link_up)
2383 return;
2384 }
2385
2386 /* Check if this is not due to overtemp */
2387 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
2388 return;
2389
2390 break;
Joe Perches7ca647b2010-09-07 21:35:40 +00002391 default:
Don Skidmore597f22d2015-06-09 16:52:02 -07002392 if (adapter->hw.mac.type >= ixgbe_mac_X540)
2393 return;
Don Skidmore9a900ec2015-06-09 17:15:01 -07002394 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw)))
Joe Perches7ca647b2010-09-07 21:35:40 +00002395 return;
2396 break;
2397 }
Don Skidmoref44e7512015-06-09 16:36:23 -07002398 e_crit(drv, "%s\n", ixgbe_overheat_msg);
Alexander Duyckf0f97782011-04-22 04:08:09 +00002399
2400 adapter->interrupt_event = 0;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002401}
2402
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002403static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
2404{
2405 struct ixgbe_hw *hw = &adapter->hw;
2406
2407 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
Don Skidmore9a900ec2015-06-09 17:15:01 -07002408 (eicr & IXGBE_EICR_GPI_SDP1(hw))) {
Emil Tantilov396e7992010-07-01 20:05:12 +00002409 e_crit(probe, "Fan has stopped, replace the adapter\n");
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002410 /* write to clear the interrupt */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002411 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002412 }
2413}
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002414
Jacob Keller4f51bf72011-08-20 04:49:45 +00002415static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr)
2416{
Don Skidmore9a900ec2015-06-09 17:15:01 -07002417 struct ixgbe_hw *hw = &adapter->hw;
2418
Jacob Keller4f51bf72011-08-20 04:49:45 +00002419 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
2420 return;
2421
2422 switch (adapter->hw.mac.type) {
2423 case ixgbe_mac_82599EB:
2424 /*
2425 * Need to check link state so complete overtemp check
2426 * on service task
2427 */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002428 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) ||
2429 (eicr & IXGBE_EICR_LSC)) &&
Jacob Keller4f51bf72011-08-20 04:49:45 +00002430 (!test_bit(__IXGBE_DOWN, &adapter->state))) {
2431 adapter->interrupt_event = eicr;
2432 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2433 ixgbe_service_event_schedule(adapter);
2434 return;
2435 }
2436 return;
2437 case ixgbe_mac_X540:
2438 if (!(eicr & IXGBE_EICR_TS))
2439 return;
2440 break;
2441 default:
2442 return;
2443 }
2444
Don Skidmoref44e7512015-06-09 16:36:23 -07002445 e_crit(drv, "%s\n", ixgbe_overheat_msg);
Jacob Keller4f51bf72011-08-20 04:49:45 +00002446}
2447
Don Skidmore45788d22015-06-09 16:59:04 -07002448static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
2449{
2450 switch (hw->mac.type) {
2451 case ixgbe_mac_82598EB:
2452 if (hw->phy.type == ixgbe_phy_nl)
2453 return true;
2454 return false;
2455 case ixgbe_mac_82599EB:
2456 case ixgbe_mac_X550EM_x:
2457 switch (hw->mac.ops.get_media_type(hw)) {
2458 case ixgbe_media_type_fiber:
2459 case ixgbe_media_type_fiber_qsfp:
2460 return true;
2461 default:
2462 return false;
2463 }
2464 default:
2465 return false;
2466 }
2467}
2468
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002469static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
2470{
2471 struct ixgbe_hw *hw = &adapter->hw;
2472
Don Skidmore9a900ec2015-06-09 17:15:01 -07002473 if (eicr & IXGBE_EICR_GPI_SDP2(hw)) {
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08002474 /* Clear the interrupt */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002475 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2(hw));
Alexander Duyck70864002011-04-27 09:13:56 +00002476 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2477 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
2478 ixgbe_service_event_schedule(adapter);
2479 }
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08002480 }
2481
Don Skidmore9a900ec2015-06-09 17:15:01 -07002482 if (eicr & IXGBE_EICR_GPI_SDP1(hw)) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002483 /* Clear the interrupt */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002484 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
Alexander Duyck70864002011-04-27 09:13:56 +00002485 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2486 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
2487 ixgbe_service_event_schedule(adapter);
2488 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002489 }
2490}
2491
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002492static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
2493{
2494 struct ixgbe_hw *hw = &adapter->hw;
2495
2496 adapter->lsc_int++;
2497 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
2498 adapter->link_check_timeout = jiffies;
2499 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2500 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
Nelson, Shannon8a0717f2009-11-12 18:47:11 +00002501 IXGBE_WRITE_FLUSH(hw);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00002502 ixgbe_service_event_schedule(adapter);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002503 }
2504}
2505
Alexander Duyckfe49f042009-06-04 16:00:09 +00002506static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
2507 u64 qmask)
2508{
2509 u32 mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08002510 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002511
Alexander Duyckbd508172010-11-16 19:27:03 -08002512 switch (hw->mac.type) {
2513 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +00002514 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
Alexander Duyckbd508172010-11-16 19:27:03 -08002515 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
2516 break;
2517 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002518 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002519 case ixgbe_mac_X550:
2520 case ixgbe_mac_X550EM_x:
Alexander Duyckfe49f042009-06-04 16:00:09 +00002521 mask = (qmask & 0xFFFFFFFF);
Alexander Duyckbd508172010-11-16 19:27:03 -08002522 if (mask)
2523 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
Alexander Duyckfe49f042009-06-04 16:00:09 +00002524 mask = (qmask >> 32);
Alexander Duyckbd508172010-11-16 19:27:03 -08002525 if (mask)
2526 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
2527 break;
2528 default:
2529 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002530 }
2531 /* skip the flush */
2532}
2533
2534static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00002535 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +00002536{
2537 u32 mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08002538 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002539
Alexander Duyckbd508172010-11-16 19:27:03 -08002540 switch (hw->mac.type) {
2541 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +00002542 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
Alexander Duyckbd508172010-11-16 19:27:03 -08002543 IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
2544 break;
2545 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002546 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002547 case ixgbe_mac_X550:
2548 case ixgbe_mac_X550EM_x:
Alexander Duyckfe49f042009-06-04 16:00:09 +00002549 mask = (qmask & 0xFFFFFFFF);
Alexander Duyckbd508172010-11-16 19:27:03 -08002550 if (mask)
2551 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
Alexander Duyckfe49f042009-06-04 16:00:09 +00002552 mask = (qmask >> 32);
Alexander Duyckbd508172010-11-16 19:27:03 -08002553 if (mask)
2554 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
2555 break;
2556 default:
2557 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002558 }
2559 /* skip the flush */
2560}
2561
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002562/**
Alexander Duyck2c4af692011-07-15 07:29:55 +00002563 * ixgbe_irq_enable - Enable default interrupt generation settings
2564 * @adapter: board private structure
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002565 **/
Alexander Duyck2c4af692011-07-15 07:29:55 +00002566static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2567 bool flush)
Auke Kok9a799d72007-09-15 14:07:45 -07002568{
Don Skidmore9a900ec2015-06-09 17:15:01 -07002569 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck2c4af692011-07-15 07:29:55 +00002570 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002571
Alexander Duyck2c4af692011-07-15 07:29:55 +00002572 /* don't reenable LSC while waiting for link */
2573 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
2574 mask &= ~IXGBE_EIMS_LSC;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002575
Alexander Duyck2c4af692011-07-15 07:29:55 +00002576 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
Jacob Keller4f51bf72011-08-20 04:49:45 +00002577 switch (adapter->hw.mac.type) {
2578 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07002579 mask |= IXGBE_EIMS_GPI_SDP0(hw);
Jacob Keller4f51bf72011-08-20 04:49:45 +00002580 break;
2581 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002582 case ixgbe_mac_X550:
2583 case ixgbe_mac_X550EM_x:
Jacob Keller4f51bf72011-08-20 04:49:45 +00002584 mask |= IXGBE_EIMS_TS;
2585 break;
2586 default:
2587 break;
2588 }
Alexander Duyck2c4af692011-07-15 07:29:55 +00002589 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
Don Skidmore9a900ec2015-06-09 17:15:01 -07002590 mask |= IXGBE_EIMS_GPI_SDP1(hw);
Alexander Duyck2c4af692011-07-15 07:29:55 +00002591 switch (adapter->hw.mac.type) {
2592 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07002593 mask |= IXGBE_EIMS_GPI_SDP1(hw);
2594 mask |= IXGBE_EIMS_GPI_SDP2(hw);
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002595 /* fall through */
Don Skidmore858bc082011-08-04 09:28:30 +00002596 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002597 case ixgbe_mac_X550:
2598 case ixgbe_mac_X550EM_x:
Don Skidmore597f22d2015-06-09 16:52:02 -07002599 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t)
2600 mask |= IXGBE_EICR_GPI_SDP0_X540;
Don Skidmore858bc082011-08-04 09:28:30 +00002601 mask |= IXGBE_EIMS_ECC;
Alexander Duyck2c4af692011-07-15 07:29:55 +00002602 mask |= IXGBE_EIMS_MAILBOX;
2603 break;
2604 default:
2605 break;
2606 }
Jacob Kellerdb0677f2012-08-24 07:46:54 +00002607
Alexander Duyck2c4af692011-07-15 07:29:55 +00002608 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
2609 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
2610 mask |= IXGBE_EIMS_FLOW_DIR;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002611
Alexander Duyck2c4af692011-07-15 07:29:55 +00002612 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
2613 if (queues)
2614 ixgbe_irq_enable_queues(adapter, ~0);
2615 if (flush)
2616 IXGBE_WRITE_FLUSH(&adapter->hw);
Auke Kok9a799d72007-09-15 14:07:45 -07002617}
2618
Alexander Duyck2c4af692011-07-15 07:29:55 +00002619static irqreturn_t ixgbe_msix_other(int irq, void *data)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002620{
Alexander Duyck2c4af692011-07-15 07:29:55 +00002621 struct ixgbe_adapter *adapter = data;
2622 struct ixgbe_hw *hw = &adapter->hw;
2623 u32 eicr;
Alexander Duyck91281fd2009-06-04 16:00:27 +00002624
Alexander Duyck2c4af692011-07-15 07:29:55 +00002625 /*
2626 * Workaround for Silicon errata. Use clear-by-write instead
2627 * of clear-by-read. Reading with EICS will return the
2628 * interrupt causes without clearing, which later be done
2629 * with the write to EICR.
2630 */
2631 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
Jacob Kellerd87d8302013-03-02 07:51:42 +00002632
2633 /* The lower 16bits of the EICR register are for the queue interrupts
Joe Perchesdbedd442015-03-06 20:49:12 -08002634 * which should be masked here in order to not accidentally clear them if
Jacob Kellerd87d8302013-03-02 07:51:42 +00002635 * the bits are high when ixgbe_msix_other is called. There is a race
2636 * condition otherwise which results in possible performance loss
2637 * especially if the ixgbe_msix_other interrupt is triggering
2638 * consistently (as it would when PPS is turned on for the X540 device)
2639 */
2640 eicr &= 0xFFFF0000;
2641
Alexander Duyck2c4af692011-07-15 07:29:55 +00002642 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
Alexander Duyck91281fd2009-06-04 16:00:27 +00002643
Alexander Duyck2c4af692011-07-15 07:29:55 +00002644 if (eicr & IXGBE_EICR_LSC)
2645 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002646
Alexander Duyck2c4af692011-07-15 07:29:55 +00002647 if (eicr & IXGBE_EICR_MAILBOX)
2648 ixgbe_msg_task(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002649
Alexander Duyck2c4af692011-07-15 07:29:55 +00002650 switch (hw->mac.type) {
2651 case ixgbe_mac_82599EB:
2652 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002653 case ixgbe_mac_X550:
2654 case ixgbe_mac_X550EM_x:
Don Skidmore597f22d2015-06-09 16:52:02 -07002655 if (hw->phy.type == ixgbe_phy_x550em_ext_t &&
2656 (eicr & IXGBE_EICR_GPI_SDP0_X540)) {
2657 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT;
2658 ixgbe_service_event_schedule(adapter);
2659 IXGBE_WRITE_REG(hw, IXGBE_EICR,
2660 IXGBE_EICR_GPI_SDP0_X540);
2661 }
Don Skidmored773ce22014-02-25 17:58:53 -08002662 if (eicr & IXGBE_EICR_ECC) {
2663 e_info(link, "Received ECC Err, initiating reset\n");
2664 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
2665 ixgbe_service_event_schedule(adapter);
2666 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
2667 }
Alexander Duyck2c4af692011-07-15 07:29:55 +00002668 /* Handle Flow Director Full threshold interrupt */
2669 if (eicr & IXGBE_EICR_FLOW_DIR) {
2670 int reinit_count = 0;
2671 int i;
2672 for (i = 0; i < adapter->num_tx_queues; i++) {
2673 struct ixgbe_ring *ring = adapter->tx_ring[i];
2674 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
2675 &ring->state))
2676 reinit_count++;
2677 }
2678 if (reinit_count) {
2679 /* no more flow director interrupts until after init */
2680 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
2681 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
2682 ixgbe_service_event_schedule(adapter);
2683 }
2684 }
2685 ixgbe_check_sfp_event(adapter, eicr);
Jacob Keller4f51bf72011-08-20 04:49:45 +00002686 ixgbe_check_overtemp_event(adapter, eicr);
Alexander Duyck2c4af692011-07-15 07:29:55 +00002687 break;
2688 default:
2689 break;
Auke Kok9a799d72007-09-15 14:07:45 -07002690 }
2691
Alexander Duyck2c4af692011-07-15 07:29:55 +00002692 ixgbe_check_fan_failure(adapter, eicr);
Jacob Kellerdb0677f2012-08-24 07:46:54 +00002693
Jacob Kellerdb0677f2012-08-24 07:46:54 +00002694 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
2695 ixgbe_ptp_check_pps_event(adapter, eicr);
Auke Kok9a799d72007-09-15 14:07:45 -07002696
Alexander Duyck2c4af692011-07-15 07:29:55 +00002697 /* re-enable the original interrupt state, no lsc, no queues */
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002698 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyck2c4af692011-07-15 07:29:55 +00002699 ixgbe_irq_enable(adapter, false, false);
Alexander Duyck91281fd2009-06-04 16:00:27 +00002700
Alexander Duyck2c4af692011-07-15 07:29:55 +00002701 return IRQ_HANDLED;
2702}
2703
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002704static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data)
Auke Kok9a799d72007-09-15 14:07:45 -07002705{
2706 struct ixgbe_q_vector *q_vector = data;
2707
Auke Kok9a799d72007-09-15 14:07:45 -07002708 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002709
2710 if (q_vector->rx.ring || q_vector->tx.ring)
2711 napi_schedule(&q_vector->napi);
Auke Kok9a799d72007-09-15 14:07:45 -07002712
2713 return IRQ_HANDLED;
Alexander Duyck91281fd2009-06-04 16:00:27 +00002714}
2715
Auke Kok9a799d72007-09-15 14:07:45 -07002716/**
Alexander Duyckeb01b972012-02-08 07:51:27 +00002717 * ixgbe_poll - NAPI Rx polling callback
2718 * @napi: structure for representing this polling device
2719 * @budget: how many packets driver is allowed to clean
2720 *
2721 * This function is used for legacy and MSI, NAPI mode
2722 **/
Jeff Kirsher8af3c332012-02-18 07:08:14 +00002723int ixgbe_poll(struct napi_struct *napi, int budget)
Alexander Duyckeb01b972012-02-08 07:51:27 +00002724{
2725 struct ixgbe_q_vector *q_vector =
2726 container_of(napi, struct ixgbe_q_vector, napi);
2727 struct ixgbe_adapter *adapter = q_vector->adapter;
2728 struct ixgbe_ring *ring;
2729 int per_ring_budget;
2730 bool clean_complete = true;
2731
2732#ifdef CONFIG_IXGBE_DCA
2733 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2734 ixgbe_update_dca(q_vector);
2735#endif
2736
2737 ixgbe_for_each_ring(ring, q_vector->tx)
2738 clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring);
2739
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002740 if (!ixgbe_qv_lock_napi(q_vector))
2741 return budget;
2742
Alexander Duyckeb01b972012-02-08 07:51:27 +00002743 /* attempt to distribute budget to each queue fairly, but don't allow
2744 * the budget to go below 1 because we'll exit polling */
2745 if (q_vector->rx.count > 1)
2746 per_ring_budget = max(budget/q_vector->rx.count, 1);
2747 else
2748 per_ring_budget = budget;
2749
2750 ixgbe_for_each_ring(ring, q_vector->rx)
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002751 clean_complete &= (ixgbe_clean_rx_irq(q_vector, ring,
2752 per_ring_budget) < per_ring_budget);
Alexander Duyckeb01b972012-02-08 07:51:27 +00002753
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002754 ixgbe_qv_unlock_napi(q_vector);
Alexander Duyckeb01b972012-02-08 07:51:27 +00002755 /* If all work not completed, return budget and keep polling */
2756 if (!clean_complete)
2757 return budget;
2758
2759 /* all work done, exit the polling mode */
2760 napi_complete(napi);
2761 if (adapter->rx_itr_setting & 1)
2762 ixgbe_set_itr(q_vector);
2763 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2764 ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
2765
2766 return 0;
2767}
2768
2769/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002770 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2771 * @adapter: board private structure
2772 *
2773 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2774 * interrupts from the kernel.
2775 **/
2776static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2777{
2778 struct net_device *netdev = adapter->netdev;
Alexander Duyck207867f2011-07-15 03:05:37 +00002779 int vector, err;
Joe Perchese8e9f692010-09-07 21:34:53 +00002780 int ri = 0, ti = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002781
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002782 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
Alexander Duyckd0759eb2010-11-16 19:27:09 -08002783 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
Alexander Duyck207867f2011-07-15 03:05:37 +00002784 struct msix_entry *entry = &adapter->msix_entries[vector];
Robert Olssoncb13fc22008-11-25 16:43:52 -08002785
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002786 if (q_vector->tx.ring && q_vector->rx.ring) {
Don Skidmore9fe93af2010-12-03 09:33:54 +00002787 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002788 "%s-%s-%d", netdev->name, "TxRx", ri++);
Alexander Duyck32aa77a2010-11-16 19:26:59 -08002789 ti++;
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002790 } else if (q_vector->rx.ring) {
2791 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2792 "%s-%s-%d", netdev->name, "rx", ri++);
2793 } else if (q_vector->tx.ring) {
2794 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2795 "%s-%s-%d", netdev->name, "tx", ti++);
Alexander Duyckd0759eb2010-11-16 19:27:09 -08002796 } else {
2797 /* skip this unused q_vector */
2798 continue;
Alexander Duyck32aa77a2010-11-16 19:26:59 -08002799 }
Alexander Duyck207867f2011-07-15 03:05:37 +00002800 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0,
2801 q_vector->name, q_vector);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002802 if (err) {
Emil Tantilov396e7992010-07-01 20:05:12 +00002803 e_err(probe, "request_irq failed for MSIX interrupt "
Emil Tantilov849c4542010-06-03 16:53:41 +00002804 "Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002805 goto free_queue_irqs;
2806 }
Alexander Duyck207867f2011-07-15 03:05:37 +00002807 /* If Flow Director is enabled, set interrupt affinity */
2808 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
2809 /* assign the mask for this irq */
2810 irq_set_affinity_hint(entry->vector,
Alexander Duyckde88eee2012-02-08 07:49:59 +00002811 &q_vector->affinity_mask);
Alexander Duyck207867f2011-07-15 03:05:37 +00002812 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002813 }
2814
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002815 err = request_irq(adapter->msix_entries[vector].vector,
Alexander Duyck2c4af692011-07-15 07:29:55 +00002816 ixgbe_msix_other, 0, netdev->name, adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002817 if (err) {
Alexander Duyckde88eee2012-02-08 07:49:59 +00002818 e_err(probe, "request_irq for msix_other failed: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002819 goto free_queue_irqs;
2820 }
2821
2822 return 0;
2823
2824free_queue_irqs:
Alexander Duyck207867f2011-07-15 03:05:37 +00002825 while (vector) {
2826 vector--;
2827 irq_set_affinity_hint(adapter->msix_entries[vector].vector,
2828 NULL);
2829 free_irq(adapter->msix_entries[vector].vector,
2830 adapter->q_vector[vector]);
2831 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002832 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2833 pci_disable_msix(adapter->pdev);
2834 kfree(adapter->msix_entries);
2835 adapter->msix_entries = NULL;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002836 return err;
2837}
2838
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002839/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002840 * ixgbe_intr - legacy mode Interrupt Handler
Auke Kok9a799d72007-09-15 14:07:45 -07002841 * @irq: interrupt number
2842 * @data: pointer to a network interface device structure
Auke Kok9a799d72007-09-15 14:07:45 -07002843 **/
2844static irqreturn_t ixgbe_intr(int irq, void *data)
2845{
Alexander Duycka65151ba22011-05-27 05:31:32 +00002846 struct ixgbe_adapter *adapter = data;
Auke Kok9a799d72007-09-15 14:07:45 -07002847 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck7a921c92009-05-06 10:43:28 +00002848 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07002849 u32 eicr;
2850
Don Skidmore54037502009-02-21 15:42:56 -08002851 /*
Alexander Duyck24ddd962012-02-10 02:08:32 +00002852 * Workaround for silicon errata #26 on 82598. Mask the interrupt
Don Skidmore54037502009-02-21 15:42:56 -08002853 * before the read of EICR.
2854 */
2855 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2856
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002857 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
Stephen Hemminger52f33af2011-12-22 16:34:52 +00002858 * therefore no explicit interrupt disable is necessary */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002859 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002860 if (!eicr) {
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002861 /*
2862 * shared interrupt alert!
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002863 * make sure interrupts are enabled because the read will
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002864 * have disabled interrupts due to EIAM
2865 * finish the workaround of silicon errata on 82598. Unmask
2866 * the interrupt that we masked before the EICR read.
2867 */
2868 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2869 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07002870 return IRQ_NONE; /* Not our interrupt */
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002871 }
Auke Kok9a799d72007-09-15 14:07:45 -07002872
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002873 if (eicr & IXGBE_EICR_LSC)
2874 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002875
Alexander Duyckbd508172010-11-16 19:27:03 -08002876 switch (hw->mac.type) {
2877 case ixgbe_mac_82599EB:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002878 ixgbe_check_sfp_event(adapter, eicr);
Don Skidmore0ccb9742011-08-04 02:07:48 +00002879 /* Fall through */
2880 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002881 case ixgbe_mac_X550:
2882 case ixgbe_mac_X550EM_x:
Don Skidmored773ce22014-02-25 17:58:53 -08002883 if (eicr & IXGBE_EICR_ECC) {
2884 e_info(link, "Received ECC Err, initiating reset\n");
2885 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
2886 ixgbe_service_event_schedule(adapter);
2887 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
2888 }
Jacob Keller4f51bf72011-08-20 04:49:45 +00002889 ixgbe_check_overtemp_event(adapter, eicr);
Alexander Duyckbd508172010-11-16 19:27:03 -08002890 break;
2891 default:
2892 break;
2893 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002894
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002895 ixgbe_check_fan_failure(adapter, eicr);
Jacob Kellerdb0677f2012-08-24 07:46:54 +00002896 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
2897 ixgbe_ptp_check_pps_event(adapter, eicr);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002898
Alexander Duyckb9f6ed22012-02-08 07:49:54 +00002899 /* would disable interrupts here but EIAM disabled it */
2900 napi_schedule(&q_vector->napi);
Auke Kok9a799d72007-09-15 14:07:45 -07002901
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002902 /*
2903 * re-enable link(maybe) and non-queue interrupts, no flush.
2904 * ixgbe_poll will re-enable the queue interrupts
2905 */
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002906 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2907 ixgbe_irq_enable(adapter, false, false);
2908
Auke Kok9a799d72007-09-15 14:07:45 -07002909 return IRQ_HANDLED;
2910}
2911
2912/**
2913 * ixgbe_request_irq - initialize interrupts
2914 * @adapter: board private structure
2915 *
2916 * Attempts to configure interrupts using the best available
2917 * capabilities of the hardware and kernel.
2918 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002919static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07002920{
2921 struct net_device *netdev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002922 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07002923
Alexander Duyck4cc6df22011-07-15 03:05:51 +00002924 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002925 err = ixgbe_request_msix_irqs(adapter);
Alexander Duyck4cc6df22011-07-15 03:05:51 +00002926 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED)
Joe Perchesa0607fd2009-11-18 23:29:17 -08002927 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
Alexander Duycka65151ba22011-05-27 05:31:32 +00002928 netdev->name, adapter);
Alexander Duyck4cc6df22011-07-15 03:05:51 +00002929 else
Joe Perchesa0607fd2009-11-18 23:29:17 -08002930 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
Alexander Duycka65151ba22011-05-27 05:31:32 +00002931 netdev->name, adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002932
Alexander Duyckde88eee2012-02-08 07:49:59 +00002933 if (err)
Emil Tantilov396e7992010-07-01 20:05:12 +00002934 e_err(probe, "request_irq failed, Error %d\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07002935
Auke Kok9a799d72007-09-15 14:07:45 -07002936 return err;
2937}
2938
2939static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2940{
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002941 int vector;
Auke Kok9a799d72007-09-15 14:07:45 -07002942
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002943 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
Alexander Duycka65151ba22011-05-27 05:31:32 +00002944 free_irq(adapter->pdev->irq, adapter);
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002945 return;
Auke Kok9a799d72007-09-15 14:07:45 -07002946 }
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002947
2948 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
2949 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
2950 struct msix_entry *entry = &adapter->msix_entries[vector];
2951
2952 /* free only the irqs that were actually requested */
2953 if (!q_vector->rx.ring && !q_vector->tx.ring)
2954 continue;
2955
2956 /* clear the affinity_mask in the IRQ descriptor */
2957 irq_set_affinity_hint(entry->vector, NULL);
2958
2959 free_irq(entry->vector, q_vector);
2960 }
2961
2962 free_irq(adapter->msix_entries[vector++].vector, adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002963}
2964
2965/**
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002966 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2967 * @adapter: board private structure
2968 **/
2969static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2970{
Alexander Duyckbd508172010-11-16 19:27:03 -08002971 switch (adapter->hw.mac.type) {
2972 case ixgbe_mac_82598EB:
Nelson, Shannon835462f2009-04-27 22:42:54 +00002973 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
Alexander Duyckbd508172010-11-16 19:27:03 -08002974 break;
2975 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002976 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002977 case ixgbe_mac_X550:
2978 case ixgbe_mac_X550EM_x:
Nelson, Shannon835462f2009-04-27 22:42:54 +00002979 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2980 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002981 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
Alexander Duyckbd508172010-11-16 19:27:03 -08002982 break;
2983 default:
2984 break;
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002985 }
2986 IXGBE_WRITE_FLUSH(&adapter->hw);
2987 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002988 int vector;
2989
2990 for (vector = 0; vector < adapter->num_q_vectors; vector++)
2991 synchronize_irq(adapter->msix_entries[vector].vector);
2992
2993 synchronize_irq(adapter->msix_entries[vector++].vector);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002994 } else {
2995 synchronize_irq(adapter->pdev->irq);
2996 }
2997}
2998
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002999/**
Auke Kok9a799d72007-09-15 14:07:45 -07003000 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
3001 *
3002 **/
3003static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
3004{
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00003005 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07003006
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00003007 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07003008
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003009 ixgbe_set_ivar(adapter, 0, 0, 0);
3010 ixgbe_set_ivar(adapter, 1, 0, 0);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003011
Emil Tantilov396e7992010-07-01 20:05:12 +00003012 e_info(hw, "Legacy interrupt IVAR setup done\n");
Auke Kok9a799d72007-09-15 14:07:45 -07003013}
3014
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003015/**
3016 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
3017 * @adapter: board private structure
3018 * @ring: structure containing ring specific data
3019 *
3020 * Configure the Tx descriptor ring after a reset.
3021 **/
Alexander Duyck84418e32010-08-19 13:40:54 +00003022void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
3023 struct ixgbe_ring *ring)
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003024{
3025 struct ixgbe_hw *hw = &adapter->hw;
3026 u64 tdba = ring->dma;
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003027 int wait_loop = 10;
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003028 u32 txdctl = IXGBE_TXDCTL_ENABLE;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003029 u8 reg_idx = ring->reg_idx;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003030
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003031 /* disable queue to avoid issues while updating state */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003032 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0);
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003033 IXGBE_WRITE_FLUSH(hw);
3034
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003035 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
Joe Perchese8e9f692010-09-07 21:34:53 +00003036 (tdba & DMA_BIT_MASK(32)));
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003037 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
3038 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
3039 ring->count * sizeof(union ixgbe_adv_tx_desc));
3040 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
3041 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
Mark Rustad2a1a0912014-01-14 18:53:15 -08003042 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx);
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003043
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003044 /*
3045 * set WTHRESH to encourage burst writeback, it should not be set
Emil Tantilov67da0972013-01-25 06:19:20 +00003046 * higher than 1 when:
3047 * - ITR is 0 as it could cause false TX hangs
3048 * - ITR is set to > 100k int/sec and BQL is enabled
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003049 *
3050 * In order to avoid issues WTHRESH + PTHRESH should always be equal
3051 * to or less than the number of on chip descriptors, which is
3052 * currently 40.
3053 */
Emil Tantilov67da0972013-01-25 06:19:20 +00003054 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR))
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003055 txdctl |= (1 << 16); /* WTHRESH = 1 */
3056 else
3057 txdctl |= (8 << 16); /* WTHRESH = 8 */
3058
Alexander Duycke954b372012-02-08 07:49:38 +00003059 /*
3060 * Setting PTHRESH to 32 both improves performance
3061 * and avoids a TX hang with DFP enabled
3062 */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003063 txdctl |= (1 << 8) | /* HTHRESH = 1 */
3064 32; /* PTHRESH = 32 */
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003065
3066 /* reinitialize flowdirector state */
Alexander Duyck39cb6812012-06-06 05:38:20 +00003067 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
Alexander Duyckee9e0f02010-11-16 19:27:01 -08003068 ring->atr_sample_rate = adapter->atr_sample_rate;
3069 ring->atr_count = 0;
3070 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
3071 } else {
3072 ring->atr_sample_rate = 0;
3073 }
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003074
Alexander Duyckfd786b72013-01-12 06:33:31 +00003075 /* initialize XPS */
3076 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) {
3077 struct ixgbe_q_vector *q_vector = ring->q_vector;
3078
3079 if (q_vector)
John Fastabend2a47fa42013-11-06 09:54:52 -08003080 netif_set_xps_queue(ring->netdev,
Alexander Duyckfd786b72013-01-12 06:33:31 +00003081 &q_vector->affinity_mask,
3082 ring->queue_index);
3083 }
3084
John Fastabendc84d3242010-11-16 19:27:12 -08003085 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
3086
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003087 /* enable queue */
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003088 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
3089
3090 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3091 if (hw->mac.type == ixgbe_mac_82598EB &&
3092 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3093 return;
3094
3095 /* poll to verify queue is enabled */
3096 do {
Don Skidmore032b4322011-03-18 09:32:53 +00003097 usleep_range(1000, 2000);
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003098 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
3099 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
3100 if (!wait_loop)
3101 e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003102}
3103
Alexander Duyck120ff942010-08-19 13:34:50 +00003104static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
3105{
3106 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003107 u32 rttdcs, mtqc;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003108 u8 tcs = netdev_get_num_tc(adapter->netdev);
Alexander Duyck120ff942010-08-19 13:34:50 +00003109
3110 if (hw->mac.type == ixgbe_mac_82598EB)
3111 return;
3112
3113 /* disable the arbiter while setting MTQC */
3114 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3115 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3116 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3117
3118 /* set transmit pool layout */
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003119 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3120 mtqc = IXGBE_MTQC_VT_ENA;
3121 if (tcs > 4)
3122 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3123 else if (tcs > 1)
3124 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3125 else if (adapter->ring_feature[RING_F_RSS].indices == 4)
3126 mtqc |= IXGBE_MTQC_32VF;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003127 else
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003128 mtqc |= IXGBE_MTQC_64VF;
3129 } else {
3130 if (tcs > 4)
3131 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3132 else if (tcs > 1)
3133 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3134 else
3135 mtqc = IXGBE_MTQC_64Q_1PB;
3136 }
John Fastabend8b1c0b22011-05-03 02:26:48 +00003137
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003138 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
John Fastabend8b1c0b22011-05-03 02:26:48 +00003139
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003140 /* Enable Security TX Buffer IFG for multiple pb */
3141 if (tcs) {
3142 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
3143 sectx |= IXGBE_SECTX_DCB;
3144 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx);
Alexander Duyck120ff942010-08-19 13:34:50 +00003145 }
3146
3147 /* re-enable the arbiter */
3148 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3149 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3150}
3151
Auke Kok9a799d72007-09-15 14:07:45 -07003152/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07003153 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07003154 * @adapter: board private structure
3155 *
3156 * Configure the Tx unit of the MAC after a reset.
3157 **/
3158static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
3159{
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003160 struct ixgbe_hw *hw = &adapter->hw;
3161 u32 dmatxctl;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003162 u32 i;
Auke Kok9a799d72007-09-15 14:07:45 -07003163
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003164 ixgbe_setup_mtqc(adapter);
3165
3166 if (hw->mac.type != ixgbe_mac_82598EB) {
3167 /* DMATXCTL.EN must be before Tx queues are enabled */
3168 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3169 dmatxctl |= IXGBE_DMATXCTL_TE;
3170 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3171 }
3172
Auke Kok9a799d72007-09-15 14:07:45 -07003173 /* Setup the HW Tx Head and Tail descriptor pointers */
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003174 for (i = 0; i < adapter->num_tx_queues; i++)
3175 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07003176}
3177
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00003178static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter,
3179 struct ixgbe_ring *ring)
3180{
3181 struct ixgbe_hw *hw = &adapter->hw;
3182 u8 reg_idx = ring->reg_idx;
3183 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3184
3185 srrctl |= IXGBE_SRRCTL_DROP_EN;
3186
3187 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3188}
3189
3190static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter,
3191 struct ixgbe_ring *ring)
3192{
3193 struct ixgbe_hw *hw = &adapter->hw;
3194 u8 reg_idx = ring->reg_idx;
3195 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3196
3197 srrctl &= ~IXGBE_SRRCTL_DROP_EN;
3198
3199 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3200}
3201
3202#ifdef CONFIG_IXGBE_DCB
3203void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3204#else
3205static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3206#endif
3207{
3208 int i;
3209 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
3210
3211 if (adapter->ixgbe_ieee_pfc)
3212 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
3213
3214 /*
3215 * We should set the drop enable bit if:
3216 * SR-IOV is enabled
3217 * or
3218 * Number of Rx queues > 1 and flow control is disabled
3219 *
3220 * This allows us to avoid head of line blocking for security
3221 * and performance reasons.
3222 */
3223 if (adapter->num_vfs || (adapter->num_rx_queues > 1 &&
3224 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) {
3225 for (i = 0; i < adapter->num_rx_queues; i++)
3226 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]);
3227 } else {
3228 for (i = 0; i < adapter->num_rx_queues; i++)
3229 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]);
3230 }
3231}
3232
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003233#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
Auke Kok9a799d72007-09-15 14:07:45 -07003234
Yi Zoua6616b42009-08-06 13:05:23 +00003235static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00003236 struct ixgbe_ring *rx_ring)
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003237{
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003238 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003239 u32 srrctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003240 u8 reg_idx = rx_ring->reg_idx;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003241
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003242 if (hw->mac.type == ixgbe_mac_82598EB) {
3243 u16 mask = adapter->ring_feature[RING_F_RSS].mask;
3244
3245 /*
3246 * if VMDq is not active we must program one srrctl register
3247 * per RSS queue since we have enabled RDRXCTL.MVMEN
3248 */
3249 reg_idx &= mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08003250 }
3251
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003252 /* configure header buffer length, needed for RSC */
3253 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003254
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003255 /* configure the packet buffer length */
Alexander Duyckf8003262012-03-03 02:35:52 +00003256 srrctl |= ixgbe_rx_bufsz(rx_ring) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003257
3258 /* configure descriptor type */
Alexander Duyckf8003262012-03-03 02:35:52 +00003259 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003260
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003261 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003262}
3263
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003264/**
3265 * Return a number of entries in the RSS indirection table
3266 *
3267 * @adapter: device handle
3268 *
3269 * - 82598/82599/X540: 128
3270 * - X550(non-SRIOV mode): 512
3271 * - X550(SRIOV mode): 64
3272 */
Vlad Zolotarov7f276ef2015-03-30 21:18:58 +03003273u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter)
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003274{
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003275 if (adapter->hw.mac.type < ixgbe_mac_X550)
3276 return 128;
3277 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3278 return 64;
3279 else
3280 return 512;
3281}
3282
3283/**
3284 * Write the RETA table to HW
3285 *
3286 * @adapter: device handle
3287 *
3288 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3289 */
3290static void ixgbe_store_reta(struct ixgbe_adapter *adapter)
3291{
3292 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
Alexander Duyck05abb122010-08-19 13:35:41 +00003293 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmored1b849b2014-11-09 06:42:57 +00003294 u32 reta = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003295 u32 indices_multi;
3296 u8 *indir_tbl = adapter->rss_indir_tbl;
John Fastabend86b4db32011-04-26 07:26:19 +00003297
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003298 /* Fill out the redirection table as follows:
3299 * - 82598: 8 bit wide entries containing pair of 4 bit RSS
3300 * indices.
3301 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index
3302 * - X550: 8 bit wide entries containing 6 bit RSS index
3303 */
3304 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
3305 indices_multi = 0x11;
3306 else
3307 indices_multi = 0x1;
3308
3309 /* Write redirection table to HW */
3310 for (i = 0; i < reta_entries; i++) {
3311 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8;
3312 if ((i & 3) == 3) {
3313 if (i < 128)
3314 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
3315 else
3316 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32),
3317 reta);
3318 reta = 0;
3319 }
3320 }
3321}
3322
3323/**
3324 * Write the RETA table to HW (for x550 devices in SRIOV mode)
3325 *
3326 * @adapter: device handle
3327 *
3328 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3329 */
3330static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter)
3331{
3332 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3333 struct ixgbe_hw *hw = &adapter->hw;
3334 u32 vfreta = 0;
3335 unsigned int pf_pool = adapter->num_vfs;
3336
3337 /* Write redirection table to HW */
3338 for (i = 0; i < reta_entries; i++) {
3339 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8;
3340 if ((i & 3) == 3) {
3341 IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool),
3342 vfreta);
3343 vfreta = 0;
3344 }
3345 }
3346}
3347
3348static void ixgbe_setup_reta(struct ixgbe_adapter *adapter)
3349{
3350 struct ixgbe_hw *hw = &adapter->hw;
3351 u32 i, j;
3352 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3353 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
3354
3355 /* Program table for at least 2 queues w/ SR-IOV so that VFs can
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003356 * make full use of any rings they may have. We will use the
3357 * PSRTYPE register to control how many rings we use within the PF.
3358 */
3359 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 2))
3360 rss_i = 2;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003361
Alexander Duyck05abb122010-08-19 13:35:41 +00003362 /* Fill out hash function seeds */
3363 for (i = 0; i < 10; i++)
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003364 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003365
Alexander Duyck05abb122010-08-19 13:35:41 +00003366 /* Fill out redirection table */
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003367 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl));
3368
Don Skidmore0f9b2322014-11-18 09:35:08 +00003369 for (i = 0, j = 0; i < reta_entries; i++, j++) {
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003370 if (j == rss_i)
Alexander Duyck05abb122010-08-19 13:35:41 +00003371 j = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003372
3373 adapter->rss_indir_tbl[i] = j;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003374 }
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003375
3376 ixgbe_store_reta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003377}
3378
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003379static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter)
Don Skidmore0f9b2322014-11-18 09:35:08 +00003380{
3381 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003382 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
3383 unsigned int pf_pool = adapter->num_vfs;
3384 int i, j;
3385
3386 /* Fill out hash function seeds */
3387 for (i = 0; i < 10; i++)
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003388 IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool),
3389 adapter->rss_key[i]);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003390
3391 /* Fill out the redirection table */
3392 for (i = 0, j = 0; i < 64; i++, j++) {
3393 if (j == rss_i)
3394 j = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003395
3396 adapter->rss_indir_tbl[i] = j;
Alexander Duyck05abb122010-08-19 13:35:41 +00003397 }
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003398
3399 ixgbe_store_vfreta(adapter);
Don Skidmored1b849b2014-11-09 06:42:57 +00003400}
3401
3402static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
3403{
3404 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003405 u32 mrqc = 0, rss_field = 0, vfmrqc = 0;
Don Skidmored1b849b2014-11-09 06:42:57 +00003406 u32 rxcsum;
Alexander Duyck05abb122010-08-19 13:35:41 +00003407
3408 /* Disable indicating checksum in descriptor, enables RSS hash */
3409 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
3410 rxcsum |= IXGBE_RXCSUM_PCSD;
3411 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
3412
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003413 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00003414 if (adapter->ring_feature[RING_F_RSS].mask)
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003415 mrqc = IXGBE_MRQC_RSSEN;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003416 } else {
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003417 u8 tcs = netdev_get_num_tc(adapter->netdev);
John Fastabend8b1c0b22011-05-03 02:26:48 +00003418
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003419 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3420 if (tcs > 4)
3421 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */
3422 else if (tcs > 1)
3423 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */
3424 else if (adapter->ring_feature[RING_F_RSS].indices == 4)
3425 mrqc = IXGBE_MRQC_VMDQRSS32EN;
3426 else
3427 mrqc = IXGBE_MRQC_VMDQRSS64EN;
3428 } else {
3429 if (tcs > 4)
3430 mrqc = IXGBE_MRQC_RTRSS8TCEN;
3431 else if (tcs > 1)
John Fastabend8b1c0b22011-05-03 02:26:48 +00003432 mrqc = IXGBE_MRQC_RTRSS4TCEN;
3433 else
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003434 mrqc = IXGBE_MRQC_RSSEN;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003435 }
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003436 }
3437
Alexander Duyck05abb122010-08-19 13:35:41 +00003438 /* Perform hash on these packet types */
Don Skidmored1b849b2014-11-09 06:42:57 +00003439 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 |
3440 IXGBE_MRQC_RSS_FIELD_IPV4_TCP |
3441 IXGBE_MRQC_RSS_FIELD_IPV6 |
3442 IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
Alexander Duyck05abb122010-08-19 13:35:41 +00003443
Alexander Duyckef6afc02012-02-08 07:51:53 +00003444 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP)
Don Skidmored1b849b2014-11-09 06:42:57 +00003445 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
Alexander Duyckef6afc02012-02-08 07:51:53 +00003446 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP)
Don Skidmored1b849b2014-11-09 06:42:57 +00003447 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
Alexander Duyckef6afc02012-02-08 07:51:53 +00003448
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003449 netdev_rss_key_fill(adapter->rss_key, sizeof(adapter->rss_key));
Don Skidmore0f9b2322014-11-18 09:35:08 +00003450 if ((hw->mac.type >= ixgbe_mac_X550) &&
3451 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
3452 unsigned int pf_pool = adapter->num_vfs;
3453
3454 /* Enable VF RSS mode */
3455 mrqc |= IXGBE_MRQC_MULTIPLE_RSS;
3456 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3457
3458 /* Setup RSS through the VF registers */
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003459 ixgbe_setup_vfreta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003460 vfmrqc = IXGBE_MRQC_RSSEN;
3461 vfmrqc |= rss_field;
3462 IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc);
3463 } else {
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003464 ixgbe_setup_reta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003465 mrqc |= rss_field;
3466 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3467 }
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003468}
3469
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07003470/**
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003471 * ixgbe_configure_rscctl - enable RSC for the indicated ring
3472 * @adapter: address of board private structure
3473 * @index: index of ring to set
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003474 **/
Don Skidmore082757a2011-07-21 05:55:00 +00003475static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
Alexander Duyck73670962010-08-19 13:38:34 +00003476 struct ixgbe_ring *ring)
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003477{
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003478 struct ixgbe_hw *hw = &adapter->hw;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003479 u32 rscctrl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003480 u8 reg_idx = ring->reg_idx;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003481
Alexander Duyck7d637bc2010-11-16 19:26:56 -08003482 if (!ring_is_rsc_enabled(ring))
Alexander Duyck73670962010-08-19 13:38:34 +00003483 return;
3484
Alexander Duyck73670962010-08-19 13:38:34 +00003485 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003486 rscctrl |= IXGBE_RSCCTL_RSCEN;
3487 /*
3488 * we must limit the number of descriptors so that the
3489 * total size of max desc * buf_len is not greater
Alexander Duyck642c6802011-11-10 09:09:17 +00003490 * than 65536
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003491 */
Alexander Duyckf8003262012-03-03 02:35:52 +00003492 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
Alexander Duyck73670962010-08-19 13:38:34 +00003493 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00003494}
3495
Alexander Duyck9e10e042010-08-19 13:40:06 +00003496#define IXGBE_MAX_RX_DESC_POLL 10
3497static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
3498 struct ixgbe_ring *ring)
3499{
3500 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck9e10e042010-08-19 13:40:06 +00003501 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3502 u32 rxdctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003503 u8 reg_idx = ring->reg_idx;
Alexander Duyck9e10e042010-08-19 13:40:06 +00003504
Mark Rustadb0483c82014-01-14 18:53:17 -08003505 if (ixgbe_removed(hw->hw_addr))
3506 return;
Alexander Duyck9e10e042010-08-19 13:40:06 +00003507 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3508 if (hw->mac.type == ixgbe_mac_82598EB &&
3509 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3510 return;
3511
3512 do {
Don Skidmore032b4322011-03-18 09:32:53 +00003513 usleep_range(1000, 2000);
Alexander Duyck9e10e042010-08-19 13:40:06 +00003514 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3515 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3516
3517 if (!wait_loop) {
3518 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
3519 "the polling period\n", reg_idx);
3520 }
3521}
3522
Yi Zou2d39d572011-01-06 14:29:56 +00003523void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
3524 struct ixgbe_ring *ring)
3525{
3526 struct ixgbe_hw *hw = &adapter->hw;
3527 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3528 u32 rxdctl;
3529 u8 reg_idx = ring->reg_idx;
3530
Mark Rustadb0483c82014-01-14 18:53:17 -08003531 if (ixgbe_removed(hw->hw_addr))
3532 return;
Yi Zou2d39d572011-01-06 14:29:56 +00003533 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3534 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
3535
3536 /* write value back with RXDCTL.ENABLE bit cleared */
3537 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3538
3539 if (hw->mac.type == ixgbe_mac_82598EB &&
3540 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3541 return;
3542
3543 /* the hardware may take up to 100us to really disable the rx queue */
3544 do {
3545 udelay(10);
3546 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3547 } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
3548
3549 if (!wait_loop) {
3550 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
3551 "the polling period\n", reg_idx);
3552 }
3553}
3554
Alexander Duyck84418e32010-08-19 13:40:54 +00003555void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
3556 struct ixgbe_ring *ring)
Alexander Duyckacd37172010-08-19 13:36:05 +00003557{
3558 struct ixgbe_hw *hw = &adapter->hw;
3559 u64 rdba = ring->dma;
Alexander Duyck9e10e042010-08-19 13:40:06 +00003560 u32 rxdctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003561 u8 reg_idx = ring->reg_idx;
Alexander Duyckacd37172010-08-19 13:36:05 +00003562
Alexander Duyck9e10e042010-08-19 13:40:06 +00003563 /* disable queue to avoid issues while updating state */
3564 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
Yi Zou2d39d572011-01-06 14:29:56 +00003565 ixgbe_disable_rx_queue(adapter, ring);
Alexander Duyck9e10e042010-08-19 13:40:06 +00003566
Alexander Duyckacd37172010-08-19 13:36:05 +00003567 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
3568 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
3569 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
3570 ring->count * sizeof(union ixgbe_adv_rx_desc));
3571 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
3572 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
Mark Rustad2a1a0912014-01-14 18:53:15 -08003573 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx);
Alexander Duyck9e10e042010-08-19 13:40:06 +00003574
3575 ixgbe_configure_srrctl(adapter, ring);
3576 ixgbe_configure_rscctl(adapter, ring);
3577
3578 if (hw->mac.type == ixgbe_mac_82598EB) {
3579 /*
3580 * enable cache line friendly hardware writes:
3581 * PTHRESH=32 descriptors (half the internal cache),
3582 * this also removes ugly rx_no_buffer_count increment
3583 * HTHRESH=4 descriptors (to minimize latency on fetch)
3584 * WTHRESH=8 burst writeback up to two cache lines
3585 */
3586 rxdctl &= ~0x3FFFFF;
3587 rxdctl |= 0x080420;
3588 }
3589
3590 /* enable receive descriptor ring */
3591 rxdctl |= IXGBE_RXDCTL_ENABLE;
3592 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3593
3594 ixgbe_rx_desc_queue_enable(adapter, ring);
Alexander Duyck7d4987d2011-05-27 05:31:37 +00003595 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
Alexander Duyckacd37172010-08-19 13:36:05 +00003596}
3597
Alexander Duyck48654522010-08-19 13:36:27 +00003598static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
3599{
3600 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00003601 int rss_i = adapter->ring_feature[RING_F_RSS].indices;
John Fastabend2a47fa42013-11-06 09:54:52 -08003602 u16 pool;
Alexander Duyck48654522010-08-19 13:36:27 +00003603
3604 /* PSRTYPE must be initialized in non 82598 adapters */
3605 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00003606 IXGBE_PSRTYPE_UDPHDR |
3607 IXGBE_PSRTYPE_IPV4HDR |
Alexander Duyck48654522010-08-19 13:36:27 +00003608 IXGBE_PSRTYPE_L2HDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00003609 IXGBE_PSRTYPE_IPV6HDR;
Alexander Duyck48654522010-08-19 13:36:27 +00003610
3611 if (hw->mac.type == ixgbe_mac_82598EB)
3612 return;
3613
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00003614 if (rss_i > 3)
3615 psrtype |= 2 << 29;
3616 else if (rss_i > 1)
3617 psrtype |= 1 << 29;
Alexander Duyck48654522010-08-19 13:36:27 +00003618
John Fastabend2a47fa42013-11-06 09:54:52 -08003619 for_each_set_bit(pool, &adapter->fwd_bitmask, 32)
3620 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
Alexander Duyck48654522010-08-19 13:36:27 +00003621}
3622
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003623static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
3624{
3625 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003626 u32 reg_offset, vf_shift;
Alexander Duyck435b19f2012-05-18 06:34:08 +00003627 u32 gcr_ext, vmdctl;
Greg Rosede4c7f62011-09-29 05:57:33 +00003628 int i;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003629
3630 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
3631 return;
3632
3633 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
Alexander Duyck435b19f2012-05-18 06:34:08 +00003634 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN;
3635 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00003636 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT;
Alexander Duyck435b19f2012-05-18 06:34:08 +00003637 vmdctl |= IXGBE_VT_CTL_REPLEN;
3638 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003639
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00003640 vf_shift = VMDQ_P(0) % 32;
3641 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003642
3643 /* Enable only the PF's pool for Tx/Rx */
Alexander Duyck435b19f2012-05-18 06:34:08 +00003644 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (~0) << vf_shift);
3645 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1);
3646 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (~0) << vf_shift);
3647 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1);
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07003648 if (adapter->bridge_mode == BRIDGE_MODE_VEB)
Greg Rose9b735982012-11-08 02:41:35 +00003649 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003650
3651 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00003652 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0));
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003653
3654 /*
3655 * Set up VF register offsets for selected VT Mode,
3656 * i.e. 32 or 64 VFs for SR-IOV
3657 */
Alexander Duyck73079ea2012-07-14 06:48:49 +00003658 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
3659 case IXGBE_82599_VMDQ_8Q_MASK:
3660 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16;
3661 break;
3662 case IXGBE_82599_VMDQ_4Q_MASK:
3663 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32;
3664 break;
3665 default:
3666 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64;
3667 break;
3668 }
3669
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003670 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3671
Alexander Duyck435b19f2012-05-18 06:34:08 +00003672
Greg Rosea985b6c32010-11-18 03:02:52 +00003673 /* Enable MAC Anti-Spoofing */
Alexander Duyck435b19f2012-05-18 06:34:08 +00003674 hw->mac.ops.set_mac_anti_spoofing(hw, (adapter->num_vfs != 0),
Greg Rosea985b6c32010-11-18 03:02:52 +00003675 adapter->num_vfs);
Don Skidmore5b7f0002015-01-28 07:03:38 +00003676
3677 /* Ensure LLDP is set for Ethertype Antispoofing if we will be
3678 * calling set_ethertype_anti_spoofing for each VF in loop below
3679 */
3680 if (hw->mac.ops.set_ethertype_anti_spoofing)
3681 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
3682 (IXGBE_ETQF_FILTER_EN | /* enable filter */
3683 IXGBE_ETQF_TX_ANTISPOOF | /* tx antispoof */
3684 IXGBE_ETH_P_LLDP)); /* LLDP eth type */
3685
Greg Rosede4c7f62011-09-29 05:57:33 +00003686 /* For VFs that have spoof checking turned off */
3687 for (i = 0; i < adapter->num_vfs; i++) {
3688 if (!adapter->vfinfo[i].spoofchk_enabled)
3689 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, false);
Don Skidmore5b7f0002015-01-28 07:03:38 +00003690
3691 /* enable ethertype anti spoofing if hw supports it */
3692 if (hw->mac.ops.set_ethertype_anti_spoofing)
3693 hw->mac.ops.set_ethertype_anti_spoofing(hw, true, i);
Vlad Zolotarove65ce0d2015-03-30 21:35:24 +03003694
3695 /* Enable/Disable RSS query feature */
3696 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i,
3697 adapter->vfinfo[i].rss_query_enabled);
Greg Rosede4c7f62011-09-29 05:57:33 +00003698 }
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003699}
3700
Alexander Duyck477de6e2010-08-19 13:38:11 +00003701static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07003702{
Auke Kok9a799d72007-09-15 14:07:45 -07003703 struct ixgbe_hw *hw = &adapter->hw;
3704 struct net_device *netdev = adapter->netdev;
3705 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Alexander Duyck477de6e2010-08-19 13:38:11 +00003706 struct ixgbe_ring *rx_ring;
3707 int i;
3708 u32 mhadd, hlreg0;
Alexander Duyck48654522010-08-19 13:36:27 +00003709
Alexander Duyck477de6e2010-08-19 13:38:11 +00003710#ifdef IXGBE_FCOE
3711 /* adjust max frame to be able to do baby jumbo for FCoE */
3712 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
3713 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
3714 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
3715
3716#endif /* IXGBE_FCOE */
Alexander Duyck872844d2012-08-15 02:10:43 +00003717
3718 /* adjust max frame to be at least the size of a standard frame */
3719 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
3720 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN);
3721
Alexander Duyck477de6e2010-08-19 13:38:11 +00003722 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
3723 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
3724 mhadd &= ~IXGBE_MHADD_MFS_MASK;
3725 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
3726
3727 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
Auke Kok9a799d72007-09-15 14:07:45 -07003728 }
3729
Auke Kok9a799d72007-09-15 14:07:45 -07003730 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
Alexander Duyck477de6e2010-08-19 13:38:11 +00003731 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
3732 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
Auke Kok9a799d72007-09-15 14:07:45 -07003733 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3734
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003735 /*
3736 * Setup the HW Rx Head and Tail Descriptor Pointers and
3737 * the Base and Length of the Rx Descriptor Ring
3738 */
Auke Kok9a799d72007-09-15 14:07:45 -07003739 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003740 rx_ring = adapter->rx_ring[i];
Alexander Duyck7d637bc2010-11-16 19:26:56 -08003741 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
3742 set_ring_rsc_enabled(rx_ring);
3743 else
3744 clear_ring_rsc_enabled(rx_ring);
Alexander Duyck477de6e2010-08-19 13:38:11 +00003745 }
Alexander Duyck477de6e2010-08-19 13:38:11 +00003746}
3747
Alexander Duyck73670962010-08-19 13:38:34 +00003748static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
3749{
3750 struct ixgbe_hw *hw = &adapter->hw;
3751 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
3752
3753 switch (hw->mac.type) {
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003754 case ixgbe_mac_X550:
3755 case ixgbe_mac_X550EM_x:
Alexander Duyck73670962010-08-19 13:38:34 +00003756 case ixgbe_mac_82598EB:
3757 /*
3758 * For VMDq support of different descriptor types or
3759 * buffer sizes through the use of multiple SRRCTL
3760 * registers, RDRXCTL.MVMEN must be set to 1
3761 *
3762 * also, the manual doesn't mention it clearly but DCA hints
3763 * will only use queue 0's tags unless this bit is set. Side
3764 * effects of setting this bit are only that SRRCTL must be
3765 * fully programmed [0..15]
3766 */
3767 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
3768 break;
3769 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08003770 case ixgbe_mac_X540:
Alexander Duyck73670962010-08-19 13:38:34 +00003771 /* Disable RSC for ACK packets */
3772 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
3773 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
3774 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
3775 /* hardware requires some bits to be set by default */
3776 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
3777 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
3778 break;
3779 default:
3780 /* We should do nothing since we don't know this hardware */
3781 return;
3782 }
3783
3784 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3785}
3786
Alexander Duyck477de6e2010-08-19 13:38:11 +00003787/**
3788 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
3789 * @adapter: board private structure
3790 *
3791 * Configure the Rx unit of the MAC after a reset.
3792 **/
3793static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3794{
3795 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck477de6e2010-08-19 13:38:11 +00003796 int i;
Jacob Keller6dcc28b2013-07-17 02:53:23 +00003797 u32 rxctrl, rfctl;
Alexander Duyck477de6e2010-08-19 13:38:11 +00003798
3799 /* disable receives while setting up the descriptors */
Don Skidmore1f9ac572015-03-13 13:54:30 -07003800 hw->mac.ops.disable_rx(hw);
Alexander Duyck477de6e2010-08-19 13:38:11 +00003801
3802 ixgbe_setup_psrtype(adapter);
Alexander Duyck73670962010-08-19 13:38:34 +00003803 ixgbe_setup_rdrxctl(adapter);
Alexander Duyck477de6e2010-08-19 13:38:11 +00003804
Jacob Keller6dcc28b2013-07-17 02:53:23 +00003805 /* RSC Setup */
3806 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
3807 rfctl &= ~IXGBE_RFCTL_RSC_DIS;
3808 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
3809 rfctl |= IXGBE_RFCTL_RSC_DIS;
3810 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
3811
Alexander Duyck9e10e042010-08-19 13:40:06 +00003812 /* Program registers for the distribution of queues */
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003813 ixgbe_setup_mrqc(adapter);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003814
Alexander Duyck477de6e2010-08-19 13:38:11 +00003815 /* set_rx_buffer_len must be called before ring initialization */
3816 ixgbe_set_rx_buffer_len(adapter);
3817
3818 /*
3819 * Setup the HW Rx Head and Tail Descriptor Pointers and
3820 * the Base and Length of the Rx Descriptor Ring
3821 */
Alexander Duyck9e10e042010-08-19 13:40:06 +00003822 for (i = 0; i < adapter->num_rx_queues; i++)
3823 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07003824
Don Skidmore1f9ac572015-03-13 13:54:30 -07003825 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
Alexander Duyck9e10e042010-08-19 13:40:06 +00003826 /* disable drop enable for 82598 parts */
3827 if (hw->mac.type == ixgbe_mac_82598EB)
3828 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3829
3830 /* enable all receives */
3831 rxctrl |= IXGBE_RXCTRL_RXEN;
3832 hw->mac.ops.enable_rx_dma(hw, rxctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07003833}
3834
Patrick McHardy80d5c362013-04-19 02:04:28 +00003835static int ixgbe_vlan_rx_add_vid(struct net_device *netdev,
3836 __be16 proto, u16 vid)
Auke Kok9a799d72007-09-15 14:07:45 -07003837{
3838 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003839 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003840
3841 /* add VID to filter table */
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00003842 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true);
Jesse Grossf62bbb52010-10-20 13:56:10 +00003843 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05003844
3845 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003846}
3847
Patrick McHardy80d5c362013-04-19 02:04:28 +00003848static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev,
3849 __be16 proto, u16 vid)
Auke Kok9a799d72007-09-15 14:07:45 -07003850{
3851 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003852 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003853
Auke Kok9a799d72007-09-15 14:07:45 -07003854 /* remove VID from filter table */
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00003855 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), false);
Jesse Grossf62bbb52010-10-20 13:56:10 +00003856 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05003857
3858 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003859}
3860
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003861/**
Jesse Grossf62bbb52010-10-20 13:56:10 +00003862 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
3863 * @adapter: driver data
3864 */
3865static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
3866{
3867 struct ixgbe_hw *hw = &adapter->hw;
3868 u32 vlnctrl;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003869 int i, j;
3870
3871 switch (hw->mac.type) {
3872 case ixgbe_mac_82598EB:
Jesse Grossf62bbb52010-10-20 13:56:10 +00003873 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3874 vlnctrl &= ~IXGBE_VLNCTRL_VME;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003875 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3876 break;
3877 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08003878 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003879 case ixgbe_mac_X550:
3880 case ixgbe_mac_X550EM_x:
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003881 for (i = 0; i < adapter->num_rx_queues; i++) {
John Fastabend2a47fa42013-11-06 09:54:52 -08003882 struct ixgbe_ring *ring = adapter->rx_ring[i];
3883
3884 if (ring->l2_accel_priv)
3885 continue;
3886 j = ring->reg_idx;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003887 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3888 vlnctrl &= ~IXGBE_RXDCTL_VME;
3889 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3890 }
3891 break;
3892 default:
3893 break;
3894 }
3895}
3896
3897/**
Jesse Grossf62bbb52010-10-20 13:56:10 +00003898 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003899 * @adapter: driver data
3900 */
Jesse Grossf62bbb52010-10-20 13:56:10 +00003901static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003902{
3903 struct ixgbe_hw *hw = &adapter->hw;
Jesse Grossf62bbb52010-10-20 13:56:10 +00003904 u32 vlnctrl;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003905 int i, j;
3906
3907 switch (hw->mac.type) {
3908 case ixgbe_mac_82598EB:
Jesse Grossf62bbb52010-10-20 13:56:10 +00003909 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3910 vlnctrl |= IXGBE_VLNCTRL_VME;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003911 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3912 break;
3913 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08003914 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003915 case ixgbe_mac_X550:
3916 case ixgbe_mac_X550EM_x:
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003917 for (i = 0; i < adapter->num_rx_queues; i++) {
John Fastabend2a47fa42013-11-06 09:54:52 -08003918 struct ixgbe_ring *ring = adapter->rx_ring[i];
3919
3920 if (ring->l2_accel_priv)
3921 continue;
3922 j = ring->reg_idx;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003923 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3924 vlnctrl |= IXGBE_RXDCTL_VME;
3925 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3926 }
3927 break;
3928 default:
3929 break;
3930 }
3931}
3932
Auke Kok9a799d72007-09-15 14:07:45 -07003933static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3934{
Jesse Grossf62bbb52010-10-20 13:56:10 +00003935 u16 vid;
Auke Kok9a799d72007-09-15 14:07:45 -07003936
Patrick McHardy80d5c362013-04-19 02:04:28 +00003937 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
Jesse Grossf62bbb52010-10-20 13:56:10 +00003938
3939 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Patrick McHardy80d5c362013-04-19 02:04:28 +00003940 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
Auke Kok9a799d72007-09-15 14:07:45 -07003941}
3942
3943/**
Jacob Kellerb335e752014-03-25 07:45:27 +00003944 * ixgbe_write_mc_addr_list - write multicast addresses to MTA
3945 * @netdev: network interface device structure
3946 *
3947 * Writes multicast address list to the MTA hash table.
3948 * Returns: -ENOMEM on failure
3949 * 0 on no addresses written
3950 * X on writing X addresses to MTA
3951 **/
3952static int ixgbe_write_mc_addr_list(struct net_device *netdev)
3953{
3954 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3955 struct ixgbe_hw *hw = &adapter->hw;
3956
3957 if (!netif_running(netdev))
3958 return 0;
3959
3960 if (hw->mac.ops.update_mc_addr_list)
3961 hw->mac.ops.update_mc_addr_list(hw, netdev);
3962 else
3963 return -ENOMEM;
3964
3965#ifdef CONFIG_PCI_IOV
Jacob Keller5d7daa32014-03-29 06:51:25 +00003966 ixgbe_restore_vf_multicasts(adapter);
Jacob Kellerb335e752014-03-25 07:45:27 +00003967#endif
3968
3969 return netdev_mc_count(netdev);
3970}
3971
Jacob Keller5d7daa32014-03-29 06:51:25 +00003972#ifdef CONFIG_PCI_IOV
3973void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter)
3974{
3975 struct ixgbe_hw *hw = &adapter->hw;
3976 int i;
3977 for (i = 0; i < hw->mac.num_rar_entries; i++) {
3978 if (adapter->mac_table[i].state & IXGBE_MAC_STATE_IN_USE)
3979 hw->mac.ops.set_rar(hw, i, adapter->mac_table[i].addr,
3980 adapter->mac_table[i].queue,
3981 IXGBE_RAH_AV);
3982 else
3983 hw->mac.ops.clear_rar(hw, i);
3984
3985 adapter->mac_table[i].state &= ~(IXGBE_MAC_STATE_MODIFIED);
3986 }
3987}
3988#endif
3989
3990static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter)
3991{
3992 struct ixgbe_hw *hw = &adapter->hw;
3993 int i;
3994 for (i = 0; i < hw->mac.num_rar_entries; i++) {
3995 if (adapter->mac_table[i].state & IXGBE_MAC_STATE_MODIFIED) {
3996 if (adapter->mac_table[i].state &
3997 IXGBE_MAC_STATE_IN_USE)
3998 hw->mac.ops.set_rar(hw, i,
3999 adapter->mac_table[i].addr,
4000 adapter->mac_table[i].queue,
4001 IXGBE_RAH_AV);
4002 else
4003 hw->mac.ops.clear_rar(hw, i);
4004
4005 adapter->mac_table[i].state &=
4006 ~(IXGBE_MAC_STATE_MODIFIED);
4007 }
4008 }
4009}
4010
4011static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter)
4012{
4013 int i;
4014 struct ixgbe_hw *hw = &adapter->hw;
4015
4016 for (i = 0; i < hw->mac.num_rar_entries; i++) {
4017 adapter->mac_table[i].state |= IXGBE_MAC_STATE_MODIFIED;
4018 adapter->mac_table[i].state &= ~IXGBE_MAC_STATE_IN_USE;
Joe Perchesc7bf7162015-03-02 19:54:47 -08004019 eth_zero_addr(adapter->mac_table[i].addr);
Jacob Keller5d7daa32014-03-29 06:51:25 +00004020 adapter->mac_table[i].queue = 0;
4021 }
4022 ixgbe_sync_mac_table(adapter);
4023}
4024
4025static int ixgbe_available_rars(struct ixgbe_adapter *adapter)
4026{
4027 struct ixgbe_hw *hw = &adapter->hw;
4028 int i, count = 0;
4029
4030 for (i = 0; i < hw->mac.num_rar_entries; i++) {
4031 if (adapter->mac_table[i].state == 0)
4032 count++;
4033 }
4034 return count;
4035}
4036
4037/* this function destroys the first RAR entry */
4038static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter,
4039 u8 *addr)
4040{
4041 struct ixgbe_hw *hw = &adapter->hw;
4042
4043 memcpy(&adapter->mac_table[0].addr, addr, ETH_ALEN);
4044 adapter->mac_table[0].queue = VMDQ_P(0);
4045 adapter->mac_table[0].state = (IXGBE_MAC_STATE_DEFAULT |
4046 IXGBE_MAC_STATE_IN_USE);
4047 hw->mac.ops.set_rar(hw, 0, adapter->mac_table[0].addr,
4048 adapter->mac_table[0].queue,
4049 IXGBE_RAH_AV);
4050}
4051
4052int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, u8 *addr, u16 queue)
4053{
4054 struct ixgbe_hw *hw = &adapter->hw;
4055 int i;
4056
4057 if (is_zero_ether_addr(addr))
4058 return -EINVAL;
4059
4060 for (i = 0; i < hw->mac.num_rar_entries; i++) {
4061 if (adapter->mac_table[i].state & IXGBE_MAC_STATE_IN_USE)
4062 continue;
4063 adapter->mac_table[i].state |= (IXGBE_MAC_STATE_MODIFIED |
4064 IXGBE_MAC_STATE_IN_USE);
4065 ether_addr_copy(adapter->mac_table[i].addr, addr);
4066 adapter->mac_table[i].queue = queue;
4067 ixgbe_sync_mac_table(adapter);
4068 return i;
4069 }
4070 return -ENOMEM;
4071}
4072
4073int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, u8 *addr, u16 queue)
4074{
4075 /* search table for addr, if found, set to 0 and sync */
4076 int i;
4077 struct ixgbe_hw *hw = &adapter->hw;
4078
4079 if (is_zero_ether_addr(addr))
4080 return -EINVAL;
4081
4082 for (i = 0; i < hw->mac.num_rar_entries; i++) {
4083 if (ether_addr_equal(addr, adapter->mac_table[i].addr) &&
4084 adapter->mac_table[i].queue == queue) {
4085 adapter->mac_table[i].state |= IXGBE_MAC_STATE_MODIFIED;
4086 adapter->mac_table[i].state &= ~IXGBE_MAC_STATE_IN_USE;
Joe Perchesc7bf7162015-03-02 19:54:47 -08004087 eth_zero_addr(adapter->mac_table[i].addr);
Jacob Keller5d7daa32014-03-29 06:51:25 +00004088 adapter->mac_table[i].queue = 0;
4089 ixgbe_sync_mac_table(adapter);
4090 return 0;
4091 }
4092 }
4093 return -ENOMEM;
4094}
Jacob Kellerb335e752014-03-25 07:45:27 +00004095/**
Alexander Duyck28500622010-06-15 09:25:48 +00004096 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
4097 * @netdev: network interface device structure
4098 *
4099 * Writes unicast address list to the RAR table.
4100 * Returns: -ENOMEM on failure/insufficient address space
4101 * 0 on no addresses written
4102 * X on writing X addresses to the RAR table
4103 **/
Jacob Keller5d7daa32014-03-29 06:51:25 +00004104static int ixgbe_write_uc_addr_list(struct net_device *netdev, int vfn)
Alexander Duyck28500622010-06-15 09:25:48 +00004105{
4106 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Alexander Duyck28500622010-06-15 09:25:48 +00004107 int count = 0;
4108
4109 /* return ENOMEM indicating insufficient memory for addresses */
Jacob Keller5d7daa32014-03-29 06:51:25 +00004110 if (netdev_uc_count(netdev) > ixgbe_available_rars(adapter))
Alexander Duyck28500622010-06-15 09:25:48 +00004111 return -ENOMEM;
4112
John Fastabend95447462012-05-31 12:42:26 +00004113 if (!netdev_uc_empty(netdev)) {
Alexander Duyck28500622010-06-15 09:25:48 +00004114 struct netdev_hw_addr *ha;
Alexander Duyck28500622010-06-15 09:25:48 +00004115 netdev_for_each_uc_addr(ha, netdev) {
Jacob Keller5d7daa32014-03-29 06:51:25 +00004116 ixgbe_del_mac_filter(adapter, ha->addr, vfn);
4117 ixgbe_add_mac_filter(adapter, ha->addr, vfn);
Alexander Duyck28500622010-06-15 09:25:48 +00004118 count++;
4119 }
4120 }
Alexander Duyck28500622010-06-15 09:25:48 +00004121 return count;
4122}
4123
4124/**
Christopher Leech2c5645c2008-08-26 04:27:02 -07004125 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
Auke Kok9a799d72007-09-15 14:07:45 -07004126 * @netdev: network interface device structure
4127 *
Christopher Leech2c5645c2008-08-26 04:27:02 -07004128 * The set_rx_method entry point is called whenever the unicast/multicast
4129 * address list or the network interface flags are updated. This routine is
4130 * responsible for configuring the hardware for proper unicast, multicast and
4131 * promiscuous mode.
Auke Kok9a799d72007-09-15 14:07:45 -07004132 **/
Greg Rose7f870472010-01-09 02:25:29 +00004133void ixgbe_set_rx_mode(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07004134{
4135 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4136 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck28500622010-06-15 09:25:48 +00004137 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
Jacob Kellera9b89432014-03-25 07:45:26 +00004138 u32 vlnctrl;
Alexander Duyck28500622010-06-15 09:25:48 +00004139 int count;
Auke Kok9a799d72007-09-15 14:07:45 -07004140
4141 /* Check for Promiscuous and All Multicast modes */
Auke Kok9a799d72007-09-15 14:07:45 -07004142 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
Jacob Kellera9b89432014-03-25 07:45:26 +00004143 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
Auke Kok9a799d72007-09-15 14:07:45 -07004144
Alexander Duyckf5dc4422010-08-19 13:36:49 +00004145 /* set all bits that we expect to always be set */
Ben Greear3f2d1c02012-03-08 08:28:41 +00004146 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */
Alexander Duyckf5dc4422010-08-19 13:36:49 +00004147 fctrl |= IXGBE_FCTRL_BAM;
4148 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
4149 fctrl |= IXGBE_FCTRL_PMCF;
4150
Alexander Duyck28500622010-06-15 09:25:48 +00004151 /* clear the bits we are changing the status of */
4152 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Jacob Kellera9b89432014-03-25 07:45:26 +00004153 vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
Auke Kok9a799d72007-09-15 14:07:45 -07004154 if (netdev->flags & IFF_PROMISC) {
Emil Tantilove433ea12010-05-13 17:33:00 +00004155 hw->addr_ctrl.user_set_promisc = true;
Auke Kok9a799d72007-09-15 14:07:45 -07004156 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Jacob Kellerb335e752014-03-25 07:45:27 +00004157 vmolr |= IXGBE_VMOLR_MPE;
Greg Rose670224f2013-02-22 02:14:39 +00004158 /* Only disable hardware filter vlans in promiscuous mode
4159 * if SR-IOV and VMDQ are disabled - otherwise ensure
4160 * that hardware VLAN filters remain enabled.
4161 */
Vlad Yasevich4556dc52014-11-21 23:52:52 -08004162 if (adapter->flags & (IXGBE_FLAG_VMDQ_ENABLED |
4163 IXGBE_FLAG_SRIOV_ENABLED))
Jacob Kellera9b89432014-03-25 07:45:26 +00004164 vlnctrl |= (IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
Auke Kok9a799d72007-09-15 14:07:45 -07004165 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07004166 if (netdev->flags & IFF_ALLMULTI) {
4167 fctrl |= IXGBE_FCTRL_MPE;
Alexander Duyck28500622010-06-15 09:25:48 +00004168 vmolr |= IXGBE_VMOLR_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07004169 }
Jacob Kellera9b89432014-03-25 07:45:26 +00004170 vlnctrl |= IXGBE_VLNCTRL_VFE;
Emil Tantilove433ea12010-05-13 17:33:00 +00004171 hw->addr_ctrl.user_set_promisc = false;
John Fastabend9dcb3732012-04-15 06:44:25 +00004172 }
4173
4174 /*
4175 * Write addresses to available RAR registers, if there is not
4176 * sufficient space to store all the addresses then enable
4177 * unicast promiscuous mode
4178 */
Jacob Keller5d7daa32014-03-29 06:51:25 +00004179 count = ixgbe_write_uc_addr_list(netdev, VMDQ_P(0));
John Fastabend9dcb3732012-04-15 06:44:25 +00004180 if (count < 0) {
4181 fctrl |= IXGBE_FCTRL_UPE;
4182 vmolr |= IXGBE_VMOLR_ROPE;
Alexander Duyck28500622010-06-15 09:25:48 +00004183 }
4184
Emil Tantilovcf789592013-10-26 08:13:20 +00004185 /* Write addresses to the MTA, if the attempt fails
4186 * then we should just turn on promiscuous mode so
4187 * that we can at least receive multicast traffic
4188 */
Jacob Kellerb335e752014-03-25 07:45:27 +00004189 count = ixgbe_write_mc_addr_list(netdev);
4190 if (count < 0) {
4191 fctrl |= IXGBE_FCTRL_MPE;
4192 vmolr |= IXGBE_VMOLR_MPE;
4193 } else if (count) {
4194 vmolr |= IXGBE_VMOLR_ROMPE;
4195 }
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00004196
4197 if (hw->mac.type != ixgbe_mac_82598EB) {
4198 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) &
Alexander Duyck28500622010-06-15 09:25:48 +00004199 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
4200 IXGBE_VMOLR_ROPE);
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00004201 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr);
Auke Kok9a799d72007-09-15 14:07:45 -07004202 }
4203
Ben Greear3f2d1c02012-03-08 08:28:41 +00004204 /* This is useful for sniffing bad packets. */
4205 if (adapter->netdev->features & NETIF_F_RXALL) {
4206 /* UPE and MPE will be handled by normal PROMISC logic
4207 * in e1000e_set_rx_mode */
4208 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */
4209 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */
4210 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */
4211
4212 fctrl &= ~(IXGBE_FCTRL_DPF);
4213 /* NOTE: VLAN filtering is disabled by setting PROMISC */
4214 }
4215
Jacob Kellera9b89432014-03-25 07:45:26 +00004216 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07004217 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
Jesse Grossf62bbb52010-10-20 13:56:10 +00004218
Patrick McHardyf6469682013-04-19 02:04:27 +00004219 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
Jesse Grossf62bbb52010-10-20 13:56:10 +00004220 ixgbe_vlan_strip_enable(adapter);
4221 else
4222 ixgbe_vlan_strip_disable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004223}
4224
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004225static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
4226{
4227 int q_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004228
Eliezer Tamir5a85e732013-06-10 11:40:20 +03004229 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
4230 ixgbe_qv_init_lock(adapter->q_vector[q_idx]);
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00004231 napi_enable(&adapter->q_vector[q_idx]->napi);
Eliezer Tamir5a85e732013-06-10 11:40:20 +03004232 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004233}
4234
4235static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
4236{
4237 int q_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004238
Eliezer Tamir5a85e732013-06-10 11:40:20 +03004239 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00004240 napi_disable(&adapter->q_vector[q_idx]->napi);
Jacob Keller27d9ce42013-09-21 05:05:44 +00004241 while (!ixgbe_qv_disable(adapter->q_vector[q_idx])) {
Eliezer Tamir5a85e732013-06-10 11:40:20 +03004242 pr_info("QV %d locked\n", q_idx);
Jacob Keller27d9ce42013-09-21 05:05:44 +00004243 usleep_range(1000, 20000);
Eliezer Tamir5a85e732013-06-10 11:40:20 +03004244 }
4245 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004246}
4247
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004248#ifdef CONFIG_IXGBE_DCB
Ben Hutchings49ce9c22012-07-10 10:56:00 +00004249/**
Alexander Duyck2f90b862008-11-20 20:52:10 -08004250 * ixgbe_configure_dcb - Configure DCB hardware
4251 * @adapter: ixgbe adapter struct
4252 *
4253 * This is called by the driver on open to configure the DCB hardware.
4254 * This is also called by the gennetlink interface when reconfiguring
4255 * the DCB state.
4256 */
4257static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
4258{
4259 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend98063072010-10-28 00:59:57 +00004260 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004261
Alexander Duyck67ebd792010-08-19 13:34:04 +00004262 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
4263 if (hw->mac.type == ixgbe_mac_82598EB)
4264 netif_set_gso_max_size(adapter->netdev, 65536);
4265 return;
4266 }
4267
4268 if (hw->mac.type == ixgbe_mac_82598EB)
4269 netif_set_gso_max_size(adapter->netdev, 32768);
4270
John Fastabendb1208182011-10-15 05:00:10 +00004271#ifdef IXGBE_FCOE
4272 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
4273 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
4274#endif
4275
Alexander Duyck01fa7d92010-11-16 19:26:53 -08004276 /* reconfigure the hardware */
John Fastabend6f70f6a2011-04-26 07:26:25 +00004277 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) {
John Fastabendc27931d2011-02-23 05:58:25 +00004278 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
4279 DCB_TX_CONFIG);
4280 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
4281 DCB_RX_CONFIG);
4282 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
John Fastabendb1208182011-10-15 05:00:10 +00004283 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) {
4284 ixgbe_dcb_hw_ets(&adapter->hw,
4285 adapter->ixgbe_ieee_ets,
4286 max_frame);
4287 ixgbe_dcb_hw_pfc_config(&adapter->hw,
4288 adapter->ixgbe_ieee_pfc->pfc_en,
4289 adapter->ixgbe_ieee_ets->prio_tc);
John Fastabendc27931d2011-02-23 05:58:25 +00004290 }
John Fastabend8187cd42011-02-23 05:58:08 +00004291
4292 /* Enable RSS Hash per TC */
4293 if (hw->mac.type != ixgbe_mac_82598EB) {
Alexander Duyck4ae63732012-06-22 06:46:33 +00004294 u32 msb = 0;
4295 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1;
John Fastabend8187cd42011-02-23 05:58:08 +00004296
Alexander Duyckd411a932012-06-30 00:14:01 +00004297 while (rss_i) {
4298 msb++;
4299 rss_i >>= 1;
John Fastabend8187cd42011-02-23 05:58:08 +00004300 }
Alexander Duyckd411a932012-06-30 00:14:01 +00004301
Alexander Duyck4ae63732012-06-22 06:46:33 +00004302 /* write msb to all 8 TCs in one write */
4303 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111);
John Fastabend8187cd42011-02-23 05:58:08 +00004304 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08004305}
John Fastabend9da712d2011-08-23 03:14:22 +00004306#endif
4307
4308/* Additional bittime to account for IXGBE framing */
4309#define IXGBE_ETH_FRAMING 20
4310
Ben Hutchings49ce9c22012-07-10 10:56:00 +00004311/**
John Fastabend9da712d2011-08-23 03:14:22 +00004312 * ixgbe_hpbthresh - calculate high water mark for flow control
4313 *
4314 * @adapter: board private structure to calculate for
Ben Hutchings49ce9c22012-07-10 10:56:00 +00004315 * @pb: packet buffer to calculate
John Fastabend9da712d2011-08-23 03:14:22 +00004316 */
4317static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
4318{
4319 struct ixgbe_hw *hw = &adapter->hw;
4320 struct net_device *dev = adapter->netdev;
4321 int link, tc, kb, marker;
4322 u32 dv_id, rx_pba;
4323
4324 /* Calculate max LAN frame size */
4325 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING;
4326
4327#ifdef IXGBE_FCOE
4328 /* FCoE traffic class uses FCOE jumbo frames */
Alexander Duyck800bd602012-06-02 00:11:02 +00004329 if ((dev->features & NETIF_F_FCOE_MTU) &&
4330 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
4331 (pb == ixgbe_fcoe_get_tc(adapter)))
4332 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004333#endif
Jacob Kellere5776622014-04-05 02:35:52 +00004334
John Fastabend9da712d2011-08-23 03:14:22 +00004335 /* Calculate delay value for device */
4336 switch (hw->mac.type) {
4337 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00004338 case ixgbe_mac_X550:
4339 case ixgbe_mac_X550EM_x:
John Fastabend9da712d2011-08-23 03:14:22 +00004340 dv_id = IXGBE_DV_X540(link, tc);
4341 break;
4342 default:
4343 dv_id = IXGBE_DV(link, tc);
4344 break;
4345 }
4346
4347 /* Loopback switch introduces additional latency */
4348 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4349 dv_id += IXGBE_B2BT(tc);
4350
4351 /* Delay value is calculated in bit times convert to KB */
4352 kb = IXGBE_BT2KB(dv_id);
4353 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10;
4354
4355 marker = rx_pba - kb;
4356
4357 /* It is possible that the packet buffer is not large enough
4358 * to provide required headroom. In this case throw an error
4359 * to user and a do the best we can.
4360 */
4361 if (marker < 0) {
4362 e_warn(drv, "Packet Buffer(%i) can not provide enough"
4363 "headroom to support flow control."
4364 "Decrease MTU or number of traffic classes\n", pb);
4365 marker = tc + 1;
4366 }
4367
4368 return marker;
4369}
4370
Ben Hutchings49ce9c22012-07-10 10:56:00 +00004371/**
John Fastabend9da712d2011-08-23 03:14:22 +00004372 * ixgbe_lpbthresh - calculate low water mark for for flow control
4373 *
4374 * @adapter: board private structure to calculate for
Ben Hutchings49ce9c22012-07-10 10:56:00 +00004375 * @pb: packet buffer to calculate
John Fastabend9da712d2011-08-23 03:14:22 +00004376 */
Jacob Kellere5776622014-04-05 02:35:52 +00004377static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb)
John Fastabend9da712d2011-08-23 03:14:22 +00004378{
4379 struct ixgbe_hw *hw = &adapter->hw;
4380 struct net_device *dev = adapter->netdev;
4381 int tc;
4382 u32 dv_id;
4383
4384 /* Calculate max LAN frame size */
4385 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
4386
Jacob Kellere5776622014-04-05 02:35:52 +00004387#ifdef IXGBE_FCOE
4388 /* FCoE traffic class uses FCOE jumbo frames */
4389 if ((dev->features & NETIF_F_FCOE_MTU) &&
4390 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
4391 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up)))
4392 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
4393#endif
4394
John Fastabend9da712d2011-08-23 03:14:22 +00004395 /* Calculate delay value for device */
4396 switch (hw->mac.type) {
4397 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00004398 case ixgbe_mac_X550:
4399 case ixgbe_mac_X550EM_x:
John Fastabend9da712d2011-08-23 03:14:22 +00004400 dv_id = IXGBE_LOW_DV_X540(tc);
4401 break;
4402 default:
4403 dv_id = IXGBE_LOW_DV(tc);
4404 break;
4405 }
4406
4407 /* Delay value is calculated in bit times convert to KB */
4408 return IXGBE_BT2KB(dv_id);
4409}
4410
4411/*
4412 * ixgbe_pbthresh_setup - calculate and setup high low water marks
4413 */
4414static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter)
4415{
4416 struct ixgbe_hw *hw = &adapter->hw;
4417 int num_tc = netdev_get_num_tc(adapter->netdev);
4418 int i;
4419
4420 if (!num_tc)
4421 num_tc = 1;
4422
John Fastabend9da712d2011-08-23 03:14:22 +00004423 for (i = 0; i < num_tc; i++) {
4424 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i);
Jacob Kellere5776622014-04-05 02:35:52 +00004425 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i);
John Fastabend9da712d2011-08-23 03:14:22 +00004426
4427 /* Low water marks must not be larger than high water marks */
Jacob Kellere5776622014-04-05 02:35:52 +00004428 if (hw->fc.low_water[i] > hw->fc.high_water[i])
4429 hw->fc.low_water[i] = 0;
John Fastabend9da712d2011-08-23 03:14:22 +00004430 }
Jacob Kellere5776622014-04-05 02:35:52 +00004431
4432 for (; i < MAX_TRAFFIC_CLASS; i++)
4433 hw->fc.high_water[i] = 0;
John Fastabend9da712d2011-08-23 03:14:22 +00004434}
John Fastabend80605c652011-05-02 12:34:10 +00004435
4436static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
4437{
John Fastabend80605c652011-05-02 12:34:10 +00004438 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckf7e10272011-07-21 00:40:35 +00004439 int hdrm;
4440 u8 tc = netdev_get_num_tc(adapter->netdev);
John Fastabend80605c652011-05-02 12:34:10 +00004441
4442 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4443 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
Alexander Duyckf7e10272011-07-21 00:40:35 +00004444 hdrm = 32 << adapter->fdir_pballoc;
4445 else
4446 hdrm = 0;
John Fastabend80605c652011-05-02 12:34:10 +00004447
Alexander Duyckf7e10272011-07-21 00:40:35 +00004448 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL);
John Fastabend9da712d2011-08-23 03:14:22 +00004449 ixgbe_pbthresh_setup(adapter);
John Fastabend80605c652011-05-02 12:34:10 +00004450}
4451
Alexander Duycke4911d52011-05-11 07:18:52 +00004452static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
4453{
4454 struct ixgbe_hw *hw = &adapter->hw;
Sasha Levinb67bfe02013-02-27 17:06:00 -08004455 struct hlist_node *node2;
Alexander Duycke4911d52011-05-11 07:18:52 +00004456 struct ixgbe_fdir_filter *filter;
4457
4458 spin_lock(&adapter->fdir_perfect_lock);
4459
4460 if (!hlist_empty(&adapter->fdir_filter_list))
4461 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
4462
Sasha Levinb67bfe02013-02-27 17:06:00 -08004463 hlist_for_each_entry_safe(filter, node2,
Alexander Duycke4911d52011-05-11 07:18:52 +00004464 &adapter->fdir_filter_list, fdir_node) {
4465 ixgbe_fdir_write_perfect_filter_82599(hw,
Alexander Duyck1f4d5182011-05-14 01:16:02 +00004466 &filter->filter,
4467 filter->sw_idx,
4468 (filter->action == IXGBE_FDIR_DROP_QUEUE) ?
4469 IXGBE_FDIR_DROP_QUEUE :
4470 adapter->rx_ring[filter->action]->reg_idx);
Alexander Duycke4911d52011-05-11 07:18:52 +00004471 }
4472
4473 spin_unlock(&adapter->fdir_perfect_lock);
4474}
4475
John Fastabend2a47fa42013-11-06 09:54:52 -08004476static void ixgbe_macvlan_set_rx_mode(struct net_device *dev, unsigned int pool,
4477 struct ixgbe_adapter *adapter)
4478{
4479 struct ixgbe_hw *hw = &adapter->hw;
4480 u32 vmolr;
4481
4482 /* No unicast promiscuous support for VMDQ devices. */
4483 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(pool));
4484 vmolr |= (IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
4485
4486 /* clear the affected bit */
4487 vmolr &= ~IXGBE_VMOLR_MPE;
4488
4489 if (dev->flags & IFF_ALLMULTI) {
4490 vmolr |= IXGBE_VMOLR_MPE;
4491 } else {
4492 vmolr |= IXGBE_VMOLR_ROMPE;
4493 hw->mac.ops.update_mc_addr_list(hw, dev);
4494 }
Jacob Keller5d7daa32014-03-29 06:51:25 +00004495 ixgbe_write_uc_addr_list(adapter->netdev, pool);
John Fastabend2a47fa42013-11-06 09:54:52 -08004496 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(pool), vmolr);
4497}
4498
John Fastabend2a47fa42013-11-06 09:54:52 -08004499static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter *vadapter)
4500{
4501 struct ixgbe_adapter *adapter = vadapter->real_adapter;
John Fastabend219354d2013-11-08 00:50:32 -08004502 int rss_i = adapter->num_rx_queues_per_pool;
John Fastabend2a47fa42013-11-06 09:54:52 -08004503 struct ixgbe_hw *hw = &adapter->hw;
4504 u16 pool = vadapter->pool;
4505 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
4506 IXGBE_PSRTYPE_UDPHDR |
4507 IXGBE_PSRTYPE_IPV4HDR |
4508 IXGBE_PSRTYPE_L2HDR |
4509 IXGBE_PSRTYPE_IPV6HDR;
4510
4511 if (hw->mac.type == ixgbe_mac_82598EB)
4512 return;
4513
4514 if (rss_i > 3)
4515 psrtype |= 2 << 29;
4516 else if (rss_i > 1)
4517 psrtype |= 1 << 29;
4518
4519 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
4520}
4521
4522/**
4523 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
4524 * @rx_ring: ring to free buffers from
4525 **/
4526static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
4527{
4528 struct device *dev = rx_ring->dev;
4529 unsigned long size;
4530 u16 i;
4531
4532 /* ring already cleared, nothing to do */
4533 if (!rx_ring->rx_buffer_info)
4534 return;
4535
4536 /* Free all the Rx ring sk_buffs */
4537 for (i = 0; i < rx_ring->count; i++) {
Alexander Duyck18cb6522014-11-14 00:56:29 +00004538 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i];
John Fastabend2a47fa42013-11-06 09:54:52 -08004539
John Fastabend2a47fa42013-11-06 09:54:52 -08004540 if (rx_buffer->skb) {
4541 struct sk_buff *skb = rx_buffer->skb;
Alexander Duyck18cb6522014-11-14 00:56:29 +00004542 if (IXGBE_CB(skb)->page_released)
John Fastabend2a47fa42013-11-06 09:54:52 -08004543 dma_unmap_page(dev,
4544 IXGBE_CB(skb)->dma,
4545 ixgbe_rx_bufsz(rx_ring),
4546 DMA_FROM_DEVICE);
John Fastabend2a47fa42013-11-06 09:54:52 -08004547 dev_kfree_skb(skb);
Junwei Zhang4d2fcfb2014-10-22 15:29:03 +00004548 rx_buffer->skb = NULL;
John Fastabend2a47fa42013-11-06 09:54:52 -08004549 }
Alexander Duyck18cb6522014-11-14 00:56:29 +00004550
4551 if (!rx_buffer->page)
4552 continue;
4553
4554 dma_unmap_page(dev, rx_buffer->dma,
4555 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
4556 __free_pages(rx_buffer->page, ixgbe_rx_pg_order(rx_ring));
4557
John Fastabend2a47fa42013-11-06 09:54:52 -08004558 rx_buffer->page = NULL;
4559 }
4560
4561 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
4562 memset(rx_ring->rx_buffer_info, 0, size);
4563
4564 /* Zero out the descriptor ring */
4565 memset(rx_ring->desc, 0, rx_ring->size);
4566
4567 rx_ring->next_to_alloc = 0;
4568 rx_ring->next_to_clean = 0;
4569 rx_ring->next_to_use = 0;
4570}
4571
4572static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter *vadapter,
4573 struct ixgbe_ring *rx_ring)
4574{
4575 struct ixgbe_adapter *adapter = vadapter->real_adapter;
4576 int index = rx_ring->queue_index + vadapter->rx_base_queue;
4577
4578 /* shutdown specific queue receive and wait for dma to settle */
4579 ixgbe_disable_rx_queue(adapter, rx_ring);
4580 usleep_range(10000, 20000);
4581 ixgbe_irq_disable_queues(adapter, ((u64)1 << index));
4582 ixgbe_clean_rx_ring(rx_ring);
4583 rx_ring->l2_accel_priv = NULL;
4584}
4585
John Fastabendae72c8d2013-11-09 07:11:26 +00004586static int ixgbe_fwd_ring_down(struct net_device *vdev,
4587 struct ixgbe_fwd_adapter *accel)
John Fastabend2a47fa42013-11-06 09:54:52 -08004588{
4589 struct ixgbe_adapter *adapter = accel->real_adapter;
4590 unsigned int rxbase = accel->rx_base_queue;
4591 unsigned int txbase = accel->tx_base_queue;
4592 int i;
4593
4594 netif_tx_stop_all_queues(vdev);
4595
4596 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4597 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
4598 adapter->rx_ring[rxbase + i]->netdev = adapter->netdev;
4599 }
4600
4601 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4602 adapter->tx_ring[txbase + i]->l2_accel_priv = NULL;
4603 adapter->tx_ring[txbase + i]->netdev = adapter->netdev;
4604 }
4605
4606
4607 return 0;
4608}
4609
4610static int ixgbe_fwd_ring_up(struct net_device *vdev,
4611 struct ixgbe_fwd_adapter *accel)
4612{
4613 struct ixgbe_adapter *adapter = accel->real_adapter;
4614 unsigned int rxbase, txbase, queues;
4615 int i, baseq, err = 0;
4616
4617 if (!test_bit(accel->pool, &adapter->fwd_bitmask))
4618 return 0;
4619
4620 baseq = accel->pool * adapter->num_rx_queues_per_pool;
4621 netdev_dbg(vdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
4622 accel->pool, adapter->num_rx_pools,
4623 baseq, baseq + adapter->num_rx_queues_per_pool,
4624 adapter->fwd_bitmask);
4625
4626 accel->netdev = vdev;
4627 accel->rx_base_queue = rxbase = baseq;
4628 accel->tx_base_queue = txbase = baseq;
4629
4630 for (i = 0; i < adapter->num_rx_queues_per_pool; i++)
4631 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
4632
4633 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4634 adapter->rx_ring[rxbase + i]->netdev = vdev;
4635 adapter->rx_ring[rxbase + i]->l2_accel_priv = accel;
4636 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[rxbase + i]);
4637 }
4638
4639 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4640 adapter->tx_ring[txbase + i]->netdev = vdev;
4641 adapter->tx_ring[txbase + i]->l2_accel_priv = accel;
4642 }
4643
4644 queues = min_t(unsigned int,
4645 adapter->num_rx_queues_per_pool, vdev->num_tx_queues);
4646 err = netif_set_real_num_tx_queues(vdev, queues);
4647 if (err)
4648 goto fwd_queue_err;
4649
John Fastabend2a47fa42013-11-06 09:54:52 -08004650 err = netif_set_real_num_rx_queues(vdev, queues);
4651 if (err)
4652 goto fwd_queue_err;
4653
4654 if (is_valid_ether_addr(vdev->dev_addr))
4655 ixgbe_add_mac_filter(adapter, vdev->dev_addr, accel->pool);
4656
4657 ixgbe_fwd_psrtype(accel);
4658 ixgbe_macvlan_set_rx_mode(vdev, accel->pool, adapter);
4659 return err;
4660fwd_queue_err:
4661 ixgbe_fwd_ring_down(vdev, accel);
4662 return err;
4663}
4664
4665static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter)
4666{
4667 struct net_device *upper;
4668 struct list_head *iter;
4669 int err;
4670
4671 netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
4672 if (netif_is_macvlan(upper)) {
4673 struct macvlan_dev *dfwd = netdev_priv(upper);
4674 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
4675
4676 if (dfwd->fwd_priv) {
4677 err = ixgbe_fwd_ring_up(upper, vadapter);
4678 if (err)
4679 continue;
4680 }
4681 }
4682 }
4683}
4684
Auke Kok9a799d72007-09-15 14:07:45 -07004685static void ixgbe_configure(struct ixgbe_adapter *adapter)
4686{
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00004687 struct ixgbe_hw *hw = &adapter->hw;
4688
John Fastabend80605c652011-05-02 12:34:10 +00004689 ixgbe_configure_pb(adapter);
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004690#ifdef CONFIG_IXGBE_DCB
Alexander Duyck67ebd792010-08-19 13:34:04 +00004691 ixgbe_configure_dcb(adapter);
Alexander Duyck2f90b862008-11-20 20:52:10 -08004692#endif
Alexander Duyckb35d4d42012-05-23 05:39:25 +00004693 /*
4694 * We must restore virtualization before VLANs or else
4695 * the VLVF registers will not be populated
4696 */
4697 ixgbe_configure_virtualization(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004698
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00004699 ixgbe_set_rx_mode(adapter->netdev);
Jesse Grossf62bbb52010-10-20 13:56:10 +00004700 ixgbe_restore_vlan(adapter);
4701
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00004702 switch (hw->mac.type) {
4703 case ixgbe_mac_82599EB:
4704 case ixgbe_mac_X540:
4705 hw->mac.ops.disable_rx_buff(hw);
4706 break;
4707 default:
4708 break;
4709 }
4710
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004711 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00004712 ixgbe_init_fdir_signature_82599(&adapter->hw,
4713 adapter->fdir_pballoc);
Alexander Duycke4911d52011-05-11 07:18:52 +00004714 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
4715 ixgbe_init_fdir_perfect_82599(&adapter->hw,
4716 adapter->fdir_pballoc);
4717 ixgbe_fdir_filter_restore(adapter);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004718 }
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00004719
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00004720 switch (hw->mac.type) {
4721 case ixgbe_mac_82599EB:
4722 case ixgbe_mac_X540:
4723 hw->mac.ops.enable_rx_buff(hw);
4724 break;
4725 default:
4726 break;
4727 }
4728
Alexander Duyck7c8ae652012-05-05 05:32:47 +00004729#ifdef IXGBE_FCOE
4730 /* configure FCoE L2 filters, redirection table, and Rx control */
4731 ixgbe_configure_fcoe(adapter);
4732
4733#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -07004734 ixgbe_configure_tx(adapter);
4735 ixgbe_configure_rx(adapter);
John Fastabend2a47fa42013-11-06 09:54:52 -08004736 ixgbe_configure_dfwd(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004737}
4738
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004739/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004740 * ixgbe_sfp_link_config - set up SFP+ link
4741 * @adapter: pointer to private adapter struct
4742 **/
4743static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
4744{
Alexander Duyck70864002011-04-27 09:13:56 +00004745 /*
Stephen Hemminger52f33af2011-12-22 16:34:52 +00004746 * We are assuming the worst case scenario here, and that
Alexander Duyck70864002011-04-27 09:13:56 +00004747 * is that an SFP was inserted/removed after the reset
4748 * but before SFP detection was enabled. As such the best
4749 * solution is to just start searching as soon as we start
4750 */
4751 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
4752 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004753
Alexander Duyck70864002011-04-27 09:13:56 +00004754 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004755}
4756
4757/**
4758 * ixgbe_non_sfp_link_config - set up non-SFP+ link
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004759 * @hw: pointer to private hardware struct
4760 *
4761 * Returns 0 on success, negative on failure
4762 **/
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004763static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004764{
Josh Hay3d292262012-12-15 03:28:19 +00004765 u32 speed;
4766 bool autoneg, link_up = false;
Mark Rustada1e869d2015-04-10 10:36:36 -07004767 int ret = IXGBE_ERR_LINK_SETUP;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004768
4769 if (hw->mac.ops.check_link)
Josh Hay3d292262012-12-15 03:28:19 +00004770 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004771
4772 if (ret)
Mark Rustade90dd262014-07-22 06:51:08 +00004773 return ret;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004774
Josh Hay3d292262012-12-15 03:28:19 +00004775 speed = hw->phy.autoneg_advertised;
4776 if ((!speed) && (hw->mac.ops.get_link_capabilities))
4777 ret = hw->mac.ops.get_link_capabilities(hw, &speed,
4778 &autoneg);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004779 if (ret)
Mark Rustade90dd262014-07-22 06:51:08 +00004780 return ret;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004781
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00004782 if (hw->mac.ops.setup_link)
Josh Hayfd0326f2012-12-15 03:28:30 +00004783 ret = hw->mac.ops.setup_link(hw, speed, link_up);
Mark Rustade90dd262014-07-22 06:51:08 +00004784
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08004785 return ret;
4786}
4787
Alexander Duycka34bcff2010-08-19 13:39:20 +00004788static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07004789{
Auke Kok9a799d72007-09-15 14:07:45 -07004790 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00004791 u32 gpie = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004792
Jesse Brandeburg9b471442009-12-03 11:33:54 +00004793 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Alexander Duycka34bcff2010-08-19 13:39:20 +00004794 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
4795 IXGBE_GPIE_OCD;
4796 gpie |= IXGBE_GPIE_EIAME;
Jesse Brandeburg9b471442009-12-03 11:33:54 +00004797 /*
4798 * use EIAM to auto-mask when MSI-X interrupt is asserted
4799 * this saves a register write for every interrupt
4800 */
4801 switch (hw->mac.type) {
4802 case ixgbe_mac_82598EB:
4803 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
4804 break;
Jesse Brandeburg9b471442009-12-03 11:33:54 +00004805 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08004806 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00004807 case ixgbe_mac_X550:
4808 case ixgbe_mac_X550EM_x:
Don Skidmoreb93a2222010-11-16 19:27:17 -08004809 default:
Jesse Brandeburg9b471442009-12-03 11:33:54 +00004810 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
4811 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
4812 break;
4813 }
4814 } else {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004815 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
4816 * specifically only auto mask tx and rx interrupts */
4817 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07004818 }
4819
Alexander Duycka34bcff2010-08-19 13:39:20 +00004820 /* XXX: to interrupt immediately for EICS writes, enable this */
4821 /* gpie |= IXGBE_GPIE_EIMEN; */
4822
4823 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
4824 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
Alexander Duyck73079ea2012-07-14 06:48:49 +00004825
4826 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
4827 case IXGBE_82599_VMDQ_8Q_MASK:
4828 gpie |= IXGBE_GPIE_VTMODE_16;
4829 break;
4830 case IXGBE_82599_VMDQ_4Q_MASK:
4831 gpie |= IXGBE_GPIE_VTMODE_32;
4832 break;
4833 default:
4834 gpie |= IXGBE_GPIE_VTMODE_64;
4835 break;
4836 }
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07004837 }
4838
Alexander Duyck5fdd31f2011-07-21 00:40:45 +00004839 /* Enable Thermal over heat sensor interrupt */
Don Skidmoref3df98e2011-08-17 10:15:21 +00004840 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
4841 switch (adapter->hw.mac.type) {
4842 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07004843 gpie |= IXGBE_SDP0_GPIEN_8259X;
Don Skidmoref3df98e2011-08-17 10:15:21 +00004844 break;
4845 case ixgbe_mac_X540:
4846 gpie |= IXGBE_EIMS_TS;
4847 break;
4848 default:
4849 break;
4850 }
4851 }
Alexander Duyck5fdd31f2011-07-21 00:40:45 +00004852
Alexander Duycka34bcff2010-08-19 13:39:20 +00004853 /* Enable fan failure interrupt */
4854 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
Don Skidmore9a900ec2015-06-09 17:15:01 -07004855 gpie |= IXGBE_SDP1_GPIEN(hw);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07004856
Don Skidmore2698b202011-04-13 07:01:52 +00004857 if (hw->mac.type == ixgbe_mac_82599EB) {
Don Skidmore9a900ec2015-06-09 17:15:01 -07004858 gpie |= IXGBE_SDP1_GPIEN_8259X;
4859 gpie |= IXGBE_SDP2_GPIEN_8259X;
Don Skidmore2698b202011-04-13 07:01:52 +00004860 }
Alexander Duycka34bcff2010-08-19 13:39:20 +00004861
4862 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
4863}
4864
Alexander Duyckc7ccde02011-07-21 00:40:40 +00004865static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
Alexander Duycka34bcff2010-08-19 13:39:20 +00004866{
4867 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00004868 int err;
Alexander Duycka34bcff2010-08-19 13:39:20 +00004869 u32 ctrl_ext;
4870
4871 ixgbe_get_hw_control(adapter);
4872 ixgbe_setup_gpie(adapter);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004873
Auke Kok9a799d72007-09-15 14:07:45 -07004874 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4875 ixgbe_configure_msix(adapter);
4876 else
4877 ixgbe_configure_msi_and_legacy(adapter);
4878
Emil Tantilovec74a472012-09-20 03:33:56 +00004879 /* enable the optics for 82599 SFP+ fiber */
4880 if (hw->mac.ops.enable_tx_laser)
Peter Waskiewicz61fac742010-04-27 00:38:15 +00004881 hw->mac.ops.enable_tx_laser(hw);
4882
Don Skidmore961fac82015-06-09 16:09:47 -07004883 if (hw->phy.ops.set_phy_power)
4884 hw->phy.ops.set_phy_power(hw, true);
4885
Peter Zijlstra4e857c52014-03-17 18:06:10 +01004886 smp_mb__before_atomic();
Auke Kok9a799d72007-09-15 14:07:45 -07004887 clear_bit(__IXGBE_DOWN, &adapter->state);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004888 ixgbe_napi_enable_all(adapter);
4889
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08004890 if (ixgbe_is_sfp(hw)) {
4891 ixgbe_sfp_link_config(adapter);
4892 } else {
4893 err = ixgbe_non_sfp_link_config(hw);
4894 if (err)
4895 e_err(probe, "link_config FAILED %d\n", err);
4896 }
4897
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004898 /* clear any pending interrupts, may auto mask */
4899 IXGBE_READ_REG(hw, IXGBE_EICR);
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00004900 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07004901
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004902 /*
Don Skidmorebf069c92009-05-07 10:39:54 +00004903 * If this adapter has a fan, check to see if we had a failure
4904 * before we enabled the interrupt.
4905 */
4906 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
4907 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
4908 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +00004909 e_crit(drv, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +00004910 }
4911
Auke Kok9a799d72007-09-15 14:07:45 -07004912 /* bring the link up in the watchdog, this could race with our first
4913 * link up interrupt but shouldn't be a problem */
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07004914 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
4915 adapter->link_check_timeout = jiffies;
Alexander Duyck70864002011-04-27 09:13:56 +00004916 mod_timer(&adapter->service_timer, jiffies);
Greg Rosec9205692010-01-22 22:46:22 +00004917
4918 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
4919 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
4920 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
4921 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
Auke Kok9a799d72007-09-15 14:07:45 -07004922}
4923
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08004924void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
4925{
4926 WARN_ON(in_interrupt());
Alexander Duyck70864002011-04-27 09:13:56 +00004927 /* put off any impending NetWatchDogTimeout */
4928 adapter->netdev->trans_start = jiffies;
4929
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08004930 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
Don Skidmore032b4322011-03-18 09:32:53 +00004931 usleep_range(1000, 2000);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08004932 ixgbe_down(adapter);
Greg Rose5809a1a2010-03-24 09:36:08 +00004933 /*
4934 * If SR-IOV enabled then wait a bit before bringing the adapter
4935 * back up to give the VFs time to respond to the reset. The
4936 * two second wait is based upon the watchdog timer cycle in
4937 * the VF driver.
4938 */
4939 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4940 msleep(2000);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08004941 ixgbe_up(adapter);
4942 clear_bit(__IXGBE_RESETTING, &adapter->state);
4943}
4944
Alexander Duyckc7ccde02011-07-21 00:40:40 +00004945void ixgbe_up(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07004946{
4947 /* hardware has been reset, we need to reload some things */
4948 ixgbe_configure(adapter);
4949
Alexander Duyckc7ccde02011-07-21 00:40:40 +00004950 ixgbe_up_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004951}
4952
4953void ixgbe_reset(struct ixgbe_adapter *adapter)
4954{
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004955 struct ixgbe_hw *hw = &adapter->hw;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004956 struct net_device *netdev = adapter->netdev;
Don Skidmore8ca783a2009-05-26 20:40:47 -07004957 int err;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004958 u8 old_addr[ETH_ALEN];
Don Skidmore8ca783a2009-05-26 20:40:47 -07004959
Mark Rustadb0483c82014-01-14 18:53:17 -08004960 if (ixgbe_removed(hw->hw_addr))
4961 return;
Alexander Duyck70864002011-04-27 09:13:56 +00004962 /* lock SFP init bit to prevent race conditions with the watchdog */
4963 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
4964 usleep_range(1000, 2000);
4965
4966 /* clear all SFP and link config related flags while holding SFP_INIT */
4967 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
4968 IXGBE_FLAG2_SFP_NEEDS_RESET);
4969 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
4970
Don Skidmore8ca783a2009-05-26 20:40:47 -07004971 err = hw->mac.ops.init_hw(hw);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00004972 switch (err) {
4973 case 0:
4974 case IXGBE_ERR_SFP_NOT_PRESENT:
Alexander Duyck70864002011-04-27 09:13:56 +00004975 case IXGBE_ERR_SFP_NOT_SUPPORTED:
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00004976 break;
4977 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
Emil Tantilov849c4542010-06-03 16:53:41 +00004978 e_dev_err("master disable timed out\n");
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00004979 break;
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00004980 case IXGBE_ERR_EEPROM_VERSION:
4981 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +00004982 e_dev_warn("This device is a pre-production adapter/LOM. "
Stephen Hemminger52f33af2011-12-22 16:34:52 +00004983 "Please be aware there may be issues associated with "
Emil Tantilov849c4542010-06-03 16:53:41 +00004984 "your hardware. If you are experiencing problems "
4985 "please contact your Intel or hardware "
4986 "representative who provided you with this "
4987 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00004988 break;
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00004989 default:
Emil Tantilov849c4542010-06-03 16:53:41 +00004990 e_dev_err("Hardware Error: %d\n", err);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00004991 }
Auke Kok9a799d72007-09-15 14:07:45 -07004992
Alexander Duyck70864002011-04-27 09:13:56 +00004993 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
Jacob Keller5d7daa32014-03-29 06:51:25 +00004994 /* do not flush user set addresses */
4995 memcpy(old_addr, &adapter->mac_table[0].addr, netdev->addr_len);
4996 ixgbe_flush_sw_mac_table(adapter);
4997 ixgbe_mac_set_default_filter(adapter, old_addr);
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00004998
4999 /* update SAN MAC vmdq pool selection */
5000 if (hw->mac.san_mac_rar_index)
5001 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
Jacob Keller1a71ab22012-08-25 03:54:19 +00005002
Jacob Keller8fecf672013-06-21 08:14:32 +00005003 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00005004 ixgbe_ptp_reset(adapter);
Don Skidmore961fac82015-06-09 16:09:47 -07005005
5006 if (hw->phy.ops.set_phy_power) {
5007 if (!netif_running(adapter->netdev) && !adapter->wol)
5008 hw->phy.ops.set_phy_power(hw, false);
5009 else
5010 hw->phy.ops.set_phy_power(hw, true);
5011 }
Auke Kok9a799d72007-09-15 14:07:45 -07005012}
5013
Auke Kok9a799d72007-09-15 14:07:45 -07005014/**
Auke Kok9a799d72007-09-15 14:07:45 -07005015 * ixgbe_clean_tx_ring - Free Tx Buffers
Auke Kok9a799d72007-09-15 14:07:45 -07005016 * @tx_ring: ring to be cleaned
5017 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005018static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005019{
5020 struct ixgbe_tx_buffer *tx_buffer_info;
5021 unsigned long size;
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005022 u16 i;
Auke Kok9a799d72007-09-15 14:07:45 -07005023
Alexander Duyck84418e32010-08-19 13:40:54 +00005024 /* ring already cleared, nothing to do */
5025 if (!tx_ring->tx_buffer_info)
5026 return;
Auke Kok9a799d72007-09-15 14:07:45 -07005027
Alexander Duyck84418e32010-08-19 13:40:54 +00005028 /* Free all the Tx ring sk_buffs */
Auke Kok9a799d72007-09-15 14:07:45 -07005029 for (i = 0; i < tx_ring->count; i++) {
5030 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005031 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
Auke Kok9a799d72007-09-15 14:07:45 -07005032 }
5033
John Fastabenddad8a3b2012-04-23 12:22:39 +00005034 netdev_tx_reset_queue(txring_txq(tx_ring));
5035
Auke Kok9a799d72007-09-15 14:07:45 -07005036 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
5037 memset(tx_ring->tx_buffer_info, 0, size);
5038
5039 /* Zero out the descriptor ring */
5040 memset(tx_ring->desc, 0, tx_ring->size);
5041
5042 tx_ring->next_to_use = 0;
5043 tx_ring->next_to_clean = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005044}
5045
5046/**
Auke Kok9a799d72007-09-15 14:07:45 -07005047 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
5048 * @adapter: board private structure
5049 **/
5050static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
5051{
5052 int i;
5053
5054 for (i = 0; i < adapter->num_rx_queues; i++)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005055 ixgbe_clean_rx_ring(adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005056}
5057
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005058/**
5059 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
5060 * @adapter: board private structure
5061 **/
5062static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
5063{
5064 int i;
5065
5066 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005067 ixgbe_clean_tx_ring(adapter->tx_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005068}
5069
Alexander Duycke4911d52011-05-11 07:18:52 +00005070static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
5071{
Sasha Levinb67bfe02013-02-27 17:06:00 -08005072 struct hlist_node *node2;
Alexander Duycke4911d52011-05-11 07:18:52 +00005073 struct ixgbe_fdir_filter *filter;
5074
5075 spin_lock(&adapter->fdir_perfect_lock);
5076
Sasha Levinb67bfe02013-02-27 17:06:00 -08005077 hlist_for_each_entry_safe(filter, node2,
Alexander Duycke4911d52011-05-11 07:18:52 +00005078 &adapter->fdir_filter_list, fdir_node) {
5079 hlist_del(&filter->fdir_node);
5080 kfree(filter);
5081 }
5082 adapter->fdir_filter_count = 0;
5083
5084 spin_unlock(&adapter->fdir_perfect_lock);
5085}
5086
Auke Kok9a799d72007-09-15 14:07:45 -07005087void ixgbe_down(struct ixgbe_adapter *adapter)
5088{
5089 struct net_device *netdev = adapter->netdev;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005090 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend2a47fa42013-11-06 09:54:52 -08005091 struct net_device *upper;
5092 struct list_head *iter;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08005093 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07005094
5095 /* signal that we are down to the interrupt handler */
Mark Rustadc3049c82014-01-14 18:53:12 -08005096 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state))
5097 return; /* do nothing if already down */
Auke Kok9a799d72007-09-15 14:07:45 -07005098
5099 /* disable receives */
Don Skidmore1f9ac572015-03-13 13:54:30 -07005100 hw->mac.ops.disable_rx(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07005101
Yi Zou2d39d572011-01-06 14:29:56 +00005102 /* disable all enabled rx queues */
5103 for (i = 0; i < adapter->num_rx_queues; i++)
5104 /* this call also flushes the previous write */
5105 ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
5106
Don Skidmore032b4322011-03-18 09:32:53 +00005107 usleep_range(10000, 20000);
Auke Kok9a799d72007-09-15 14:07:45 -07005108
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005109 netif_tx_stop_all_queues(netdev);
5110
Alexander Duyck70864002011-04-27 09:13:56 +00005111 /* call carrier off first to avoid false dev_watchdog timeouts */
John Fastabendc0dfb902010-04-27 02:13:39 +00005112 netif_carrier_off(netdev);
5113 netif_tx_disable(netdev);
5114
John Fastabend2a47fa42013-11-06 09:54:52 -08005115 /* disable any upper devices */
5116 netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
5117 if (netif_is_macvlan(upper)) {
5118 struct macvlan_dev *vlan = netdev_priv(upper);
5119
5120 if (vlan->fwd_priv) {
5121 netif_tx_stop_all_queues(upper);
5122 netif_carrier_off(upper);
5123 netif_tx_disable(upper);
5124 }
5125 }
5126 }
5127
John Fastabendc0dfb902010-04-27 02:13:39 +00005128 ixgbe_irq_disable(adapter);
5129
5130 ixgbe_napi_disable_all(adapter);
5131
Alexander Duyckd034acf2011-04-27 09:25:34 +00005132 adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
5133 IXGBE_FLAG2_RESET_REQUESTED);
Alexander Duyck70864002011-04-27 09:13:56 +00005134 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
5135
5136 del_timer_sync(&adapter->service_timer);
5137
Don Skidmore0a1f87c2009-09-18 09:45:43 +00005138 if (adapter->num_vfs) {
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00005139 /* Clear EITR Select mapping */
5140 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
5141
5142 /* Mark all the VFs as inactive */
5143 for (i = 0 ; i < adapter->num_vfs; i++)
Rusty Russell3db1cd52011-12-19 13:56:45 +00005144 adapter->vfinfo[i].clear_to_send = false;
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00005145
Don Skidmore0a1f87c2009-09-18 09:45:43 +00005146 /* ping all the active vfs to let them know we are going down */
Auke Kok9a799d72007-09-15 14:07:45 -07005147 ixgbe_ping_all_vfs(adapter);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005148
Auke Kok9a799d72007-09-15 14:07:45 -07005149 /* Disable all VFTE/VFRE TX/RX */
Peter Waskiewiczb25ebfd2010-10-05 01:27:49 +00005150 ixgbe_disable_tx_rx(adapter);
Peter Waskiewiczb25ebfd2010-10-05 01:27:49 +00005151 }
5152
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005153 /* disable transmits in the hardware now that interrupts are off */
5154 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyckbf29ee62010-11-16 19:27:07 -08005155 u8 reg_idx = adapter->tx_ring[i]->reg_idx;
Alexander Duyck34cecbb2011-04-22 04:08:14 +00005156 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005157 }
Alexander Duyck34cecbb2011-04-22 04:08:14 +00005158
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005159 /* Disable the Tx DMA engine on 82599 and later MAC */
Alexander Duyckbd508172010-11-16 19:27:03 -08005160 switch (hw->mac.type) {
5161 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08005162 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005163 case ixgbe_mac_X550:
5164 case ixgbe_mac_X550EM_x:
PJ Waskiewicz88512532009-03-13 22:15:10 +00005165 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
Joe Perchese8e9f692010-09-07 21:34:53 +00005166 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
5167 ~IXGBE_DMATXCTL_TE));
Alexander Duyckbd508172010-11-16 19:27:03 -08005168 break;
5169 default:
5170 break;
5171 }
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005172
Paul Larson6f4a0e42008-06-24 17:00:56 -07005173 if (!pci_channel_offline(adapter->pdev))
5174 ixgbe_reset(adapter);
Don Skidmorec6ecf392010-12-03 03:31:51 +00005175
Emil Tantilovec74a472012-09-20 03:33:56 +00005176 /* power down the optics for 82599 SFP+ fiber */
5177 if (hw->mac.ops.disable_tx_laser)
Don Skidmorec6ecf392010-12-03 03:31:51 +00005178 hw->mac.ops.disable_tx_laser(hw);
5179
Auke Kok9a799d72007-09-15 14:07:45 -07005180 ixgbe_clean_all_tx_rings(adapter);
5181 ixgbe_clean_all_rx_rings(adapter);
5182
Jeff Garzik5dd2d332008-10-16 05:09:31 -04005183#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07005184 /* since we reset the hardware DCA settings were cleared */
Alexander Duycke35ec122009-05-21 13:07:12 +00005185 ixgbe_setup_dca(adapter);
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07005186#endif
Auke Kok9a799d72007-09-15 14:07:45 -07005187}
5188
Auke Kok9a799d72007-09-15 14:07:45 -07005189/**
Auke Kok9a799d72007-09-15 14:07:45 -07005190 * ixgbe_tx_timeout - Respond to a Tx Hang
5191 * @netdev: network interface device structure
5192 **/
5193static void ixgbe_tx_timeout(struct net_device *netdev)
5194{
5195 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5196
5197 /* Do the reset outside of interrupt context */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00005198 ixgbe_tx_timeout_reset(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005199}
5200
Jesse Brandeburg4df10462009-03-13 22:15:31 +00005201/**
Auke Kok9a799d72007-09-15 14:07:45 -07005202 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
5203 * @adapter: board private structure to initialize
5204 *
5205 * ixgbe_sw_init initializes the Adapter private data structure.
5206 * Fields are initialized based on PCI device information and
5207 * OS network device settings (MTU size).
5208 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05005209static int ixgbe_sw_init(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07005210{
5211 struct ixgbe_hw *hw = &adapter->hw;
5212 struct pci_dev *pdev = adapter->pdev;
Alexander Duyckd3cb9862013-01-16 01:35:35 +00005213 unsigned int rss, fdir;
Jacob Kellercb6d0f52012-12-04 06:03:14 +00005214 u32 fwsm;
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08005215#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08005216 int j;
5217 struct tc_configuration *tc;
5218#endif
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005219
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07005220 /* PCI config space info */
5221
5222 hw->vendor_id = pdev->vendor;
5223 hw->device_id = pdev->device;
5224 hw->revision_id = pdev->revision;
5225 hw->subsystem_vendor_id = pdev->subsystem_vendor;
5226 hw->subsystem_device_id = pdev->subsystem_device;
5227
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005228 /* Set common capability flags and settings */
Don Skidmore0f9b2322014-11-18 09:35:08 +00005229 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus());
Alexander Duyckc0876632012-05-10 00:01:46 +00005230 adapter->ring_feature[RING_F_RSS].limit = rss;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005231 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
5232 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005233 adapter->max_q_vectors = MAX_Q_VECTORS_82599;
5234 adapter->atr_sample_rate = 20;
Alexander Duyckd3cb9862013-01-16 01:35:35 +00005235 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus());
5236 adapter->ring_feature[RING_F_FDIR].limit = fdir;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005237 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
5238#ifdef CONFIG_IXGBE_DCA
5239 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE;
5240#endif
5241#ifdef IXGBE_FCOE
5242 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
5243 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
5244#ifdef CONFIG_IXGBE_DCB
5245 /* Default traffic class to use for FCoE */
5246 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
5247#endif /* CONFIG_IXGBE_DCB */
5248#endif /* IXGBE_FCOE */
5249
Jacob Keller5d7daa32014-03-29 06:51:25 +00005250 adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
5251 hw->mac.num_rar_entries,
5252 GFP_ATOMIC);
5253
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005254 /* Set MAC specific capability flags and exceptions */
Alexander Duyckbd508172010-11-16 19:27:03 -08005255 switch (hw->mac.type) {
5256 case ixgbe_mac_82598EB:
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005257 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE;
5258 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
5259
Don Skidmorebf069c92009-05-07 10:39:54 +00005260 if (hw->device_id == IXGBE_DEV_ID_82598AT)
5261 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005262
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00005263 adapter->max_q_vectors = MAX_Q_VECTORS_82598;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00005264 adapter->ring_feature[RING_F_FDIR].limit = 0;
5265 adapter->atr_sample_rate = 0;
5266 adapter->fdir_pballoc = 0;
5267#ifdef IXGBE_FCOE
5268 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
5269 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
5270#ifdef CONFIG_IXGBE_DCB
5271 adapter->fcoe.up = 0;
5272#endif /* IXGBE_DCB */
5273#endif /* IXGBE_FCOE */
5274 break;
5275 case ixgbe_mac_82599EB:
5276 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
5277 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Alexander Duyckbd508172010-11-16 19:27:03 -08005278 break;
Don Skidmoreb93a2222010-11-16 19:27:17 -08005279 case ixgbe_mac_X540:
Don Skidmore9a900ec2015-06-09 17:15:01 -07005280 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
Jacob Kellercb6d0f52012-12-04 06:03:14 +00005281 if (fwsm & IXGBE_FWSM_TS_ENABLED)
5282 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Alexander Duyckbd508172010-11-16 19:27:03 -08005283 break;
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005284 case ixgbe_mac_X550EM_x:
5285 case ixgbe_mac_X550:
5286#ifdef CONFIG_IXGBE_DCA
5287 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE;
5288#endif
5289 break;
Alexander Duyckbd508172010-11-16 19:27:03 -08005290 default:
5291 break;
Alexander Duyckf8212f92009-04-27 22:42:37 +00005292 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08005293
Alexander Duyck7c8ae652012-05-05 05:32:47 +00005294#ifdef IXGBE_FCOE
5295 /* FCoE support exists, always init the FCoE lock */
5296 spin_lock_init(&adapter->fcoe.lock);
5297
5298#endif
Alexander Duyck1fc5f032011-06-02 04:28:39 +00005299 /* n-tuple support exists, always init our spinlock */
5300 spin_lock_init(&adapter->fdir_perfect_lock);
5301
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08005302#ifdef CONFIG_IXGBE_DCB
John Fastabend4de2a022011-09-27 03:52:01 +00005303 switch (hw->mac.type) {
5304 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005305 case ixgbe_mac_X550:
5306 case ixgbe_mac_X550EM_x:
John Fastabend4de2a022011-09-27 03:52:01 +00005307 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS;
5308 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS;
5309 break;
5310 default:
5311 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
5312 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
5313 break;
5314 }
5315
Alexander Duyck2f90b862008-11-20 20:52:10 -08005316 /* Configure DCB traffic classes */
5317 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
5318 tc = &adapter->dcb_cfg.tc_config[j];
5319 tc->path[DCB_TX_CONFIG].bwg_id = 0;
5320 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
5321 tc->path[DCB_RX_CONFIG].bwg_id = 0;
5322 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
5323 tc->dcb_pfc = pfc_disabled;
5324 }
John Fastabend4de2a022011-09-27 03:52:01 +00005325
5326 /* Initialize default user to priority mapping, UPx->TC0 */
5327 tc = &adapter->dcb_cfg.tc_config[0];
5328 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF;
5329 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF;
5330
Alexander Duyck2f90b862008-11-20 20:52:10 -08005331 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
5332 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005333 adapter->dcb_cfg.pfc_mode_enable = false;
Alexander Duyck2f90b862008-11-20 20:52:10 -08005334 adapter->dcb_set_bitmap = 0x00;
John Fastabend30323092011-03-01 05:25:35 +00005335 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
John Fastabendf525c6d22012-04-18 22:42:27 +00005336 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
5337 sizeof(adapter->temp_dcb_cfg));
Alexander Duyck2f90b862008-11-20 20:52:10 -08005338
5339#endif
Auke Kok9a799d72007-09-15 14:07:45 -07005340
5341 /* default flow control settings */
Don Skidmorecd7664f2009-03-31 21:33:44 +00005342 hw->fc.requested_mode = ixgbe_fc_full;
Don Skidmore71fd5702009-03-31 21:35:05 +00005343 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
John Fastabend9da712d2011-08-23 03:14:22 +00005344 ixgbe_pbthresh_setup(adapter);
Jesse Brandeburg2b9ade92008-08-26 04:27:10 -07005345 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
5346 hw->fc.send_xon = true;
Don Skidmore73d80953d2013-07-31 02:19:24 +00005347 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07005348
Alexander Duyck99d74482012-05-09 08:09:25 +00005349#ifdef CONFIG_PCI_IOV
Jacob Keller170e8542013-11-09 04:52:32 -08005350 if (max_vfs > 0)
5351 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
Alexander Duyck99d74482012-05-09 08:09:25 +00005352
Jacob Keller170e8542013-11-09 04:52:32 -08005353 /* assign number of SR-IOV VFs */
5354 if (hw->mac.type != ixgbe_mac_82598EB) {
ethan.zhaodcc23e32014-01-16 19:41:04 -08005355 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) {
Jacob Keller170e8542013-11-09 04:52:32 -08005356 adapter->num_vfs = 0;
5357 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
5358 } else {
5359 adapter->num_vfs = max_vfs;
5360 }
5361 }
5362#endif /* CONFIG_PCI_IOV */
5363
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07005364 /* enable itr by default in dynamic mode */
Nelson, Shannonf7554a22009-09-18 09:46:06 +00005365 adapter->rx_itr_setting = 1;
Nelson, Shannonf7554a22009-09-18 09:46:06 +00005366 adapter->tx_itr_setting = 1;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07005367
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07005368 /* set default ring sizes */
5369 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
5370 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
5371
Alexander Duyckbd198052011-06-11 01:45:08 +00005372 /* set default work limits */
Alexander Duyck59224552011-08-31 00:01:06 +00005373 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK;
Alexander Duyckbd198052011-06-11 01:45:08 +00005374
Auke Kok9a799d72007-09-15 14:07:45 -07005375 /* initialize eeprom parameters */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07005376 if (ixgbe_init_eeprom_params_generic(hw)) {
Emil Tantilov849c4542010-06-03 16:53:41 +00005377 e_dev_err("EEPROM initialization failed\n");
Auke Kok9a799d72007-09-15 14:07:45 -07005378 return -EIO;
5379 }
5380
John Fastabend2a47fa42013-11-06 09:54:52 -08005381 /* PF holds first pool slot */
5382 set_bit(0, &adapter->fwd_bitmask);
Auke Kok9a799d72007-09-15 14:07:45 -07005383 set_bit(__IXGBE_DOWN, &adapter->state);
5384
5385 return 0;
5386}
5387
5388/**
5389 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005390 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07005391 *
5392 * Return 0 on success, negative on failure
5393 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005394int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005395{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005396 struct device *dev = tx_ring->dev;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005397 int orig_node = dev_to_node(dev);
Mark Rustadca8dfe22014-07-24 06:19:24 +00005398 int ring_node = -1;
Auke Kok9a799d72007-09-15 14:07:45 -07005399 int size;
5400
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005401 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005402
5403 if (tx_ring->q_vector)
Mark Rustadca8dfe22014-07-24 06:19:24 +00005404 ring_node = tx_ring->q_vector->numa_node;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005405
Mark Rustadca8dfe22014-07-24 06:19:24 +00005406 tx_ring->tx_buffer_info = vzalloc_node(size, ring_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00005407 if (!tx_ring->tx_buffer_info)
Eric Dumazet89bf67f2010-11-22 00:15:06 +00005408 tx_ring->tx_buffer_info = vzalloc(size);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07005409 if (!tx_ring->tx_buffer_info)
5410 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07005411
John Stultz827da442013-10-07 15:51:58 -07005412 u64_stats_init(&tx_ring->syncp);
5413
Auke Kok9a799d72007-09-15 14:07:45 -07005414 /* round up to nearest 4K */
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08005415 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005416 tx_ring->size = ALIGN(tx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07005417
Mark Rustadca8dfe22014-07-24 06:19:24 +00005418 set_dev_node(dev, ring_node);
Alexander Duyckde88eee2012-02-08 07:49:59 +00005419 tx_ring->desc = dma_alloc_coherent(dev,
5420 tx_ring->size,
5421 &tx_ring->dma,
5422 GFP_KERNEL);
5423 set_dev_node(dev, orig_node);
5424 if (!tx_ring->desc)
5425 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
5426 &tx_ring->dma, GFP_KERNEL);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07005427 if (!tx_ring->desc)
5428 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07005429
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005430 tx_ring->next_to_use = 0;
5431 tx_ring->next_to_clean = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005432 return 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07005433
5434err:
5435 vfree(tx_ring->tx_buffer_info);
5436 tx_ring->tx_buffer_info = NULL;
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005437 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07005438 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07005439}
5440
5441/**
Alexander Duyck69888672008-09-11 20:05:39 -07005442 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
5443 * @adapter: board private structure
5444 *
5445 * If this function returns with an error, then it's possible one or
5446 * more of the rings is populated (while the rest are not). It is the
5447 * callers duty to clean those orphaned rings.
5448 *
5449 * Return 0 on success, negative on failure
5450 **/
5451static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
5452{
5453 int i, err = 0;
5454
5455 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005456 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005457 if (!err)
5458 continue;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005459
Emil Tantilov396e7992010-07-01 20:05:12 +00005460 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005461 goto err_setup_tx;
Alexander Duyck69888672008-09-11 20:05:39 -07005462 }
5463
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005464 return 0;
5465err_setup_tx:
5466 /* rewind the index freeing the rings as we go */
5467 while (i--)
5468 ixgbe_free_tx_resources(adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005469 return err;
5470}
5471
5472/**
Auke Kok9a799d72007-09-15 14:07:45 -07005473 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005474 * @rx_ring: rx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07005475 *
5476 * Returns 0 on success, negative on failure
5477 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005478int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005479{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005480 struct device *dev = rx_ring->dev;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005481 int orig_node = dev_to_node(dev);
Mark Rustadca8dfe22014-07-24 06:19:24 +00005482 int ring_node = -1;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005483 int size;
Auke Kok9a799d72007-09-15 14:07:45 -07005484
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005485 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005486
5487 if (rx_ring->q_vector)
Mark Rustadca8dfe22014-07-24 06:19:24 +00005488 ring_node = rx_ring->q_vector->numa_node;
Alexander Duyckde88eee2012-02-08 07:49:59 +00005489
Mark Rustadca8dfe22014-07-24 06:19:24 +00005490 rx_ring->rx_buffer_info = vzalloc_node(size, ring_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00005491 if (!rx_ring->rx_buffer_info)
Eric Dumazet89bf67f2010-11-22 00:15:06 +00005492 rx_ring->rx_buffer_info = vzalloc(size);
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005493 if (!rx_ring->rx_buffer_info)
5494 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07005495
John Stultz827da442013-10-07 15:51:58 -07005496 u64_stats_init(&rx_ring->syncp);
5497
Auke Kok9a799d72007-09-15 14:07:45 -07005498 /* Round up to nearest 4K */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005499 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5500 rx_ring->size = ALIGN(rx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07005501
Mark Rustadca8dfe22014-07-24 06:19:24 +00005502 set_dev_node(dev, ring_node);
Alexander Duyckde88eee2012-02-08 07:49:59 +00005503 rx_ring->desc = dma_alloc_coherent(dev,
5504 rx_ring->size,
5505 &rx_ring->dma,
5506 GFP_KERNEL);
5507 set_dev_node(dev, orig_node);
5508 if (!rx_ring->desc)
5509 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
5510 &rx_ring->dma, GFP_KERNEL);
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005511 if (!rx_ring->desc)
5512 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07005513
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005514 rx_ring->next_to_clean = 0;
5515 rx_ring->next_to_use = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005516
5517 return 0;
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005518err:
5519 vfree(rx_ring->rx_buffer_info);
5520 rx_ring->rx_buffer_info = NULL;
5521 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07005522 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07005523}
5524
5525/**
Alexander Duyck69888672008-09-11 20:05:39 -07005526 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5527 * @adapter: board private structure
5528 *
5529 * If this function returns with an error, then it's possible one or
5530 * more of the rings is populated (while the rest are not). It is the
5531 * callers duty to clean those orphaned rings.
5532 *
5533 * Return 0 on success, negative on failure
5534 **/
Alexander Duyck69888672008-09-11 20:05:39 -07005535static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5536{
5537 int i, err = 0;
5538
5539 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005540 err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005541 if (!err)
5542 continue;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005543
Emil Tantilov396e7992010-07-01 20:05:12 +00005544 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005545 goto err_setup_rx;
Alexander Duyck69888672008-09-11 20:05:39 -07005546 }
5547
Alexander Duyck7c8ae652012-05-05 05:32:47 +00005548#ifdef IXGBE_FCOE
5549 err = ixgbe_setup_fcoe_ddp_resources(adapter);
5550 if (!err)
5551#endif
5552 return 0;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005553err_setup_rx:
5554 /* rewind the index freeing the rings as we go */
5555 while (i--)
5556 ixgbe_free_rx_resources(adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005557 return err;
5558}
5559
5560/**
Auke Kok9a799d72007-09-15 14:07:45 -07005561 * ixgbe_free_tx_resources - Free Tx Resources per Queue
Auke Kok9a799d72007-09-15 14:07:45 -07005562 * @tx_ring: Tx descriptor ring for a specific queue
5563 *
5564 * Free all transmit software resources
5565 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005566void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005567{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005568 ixgbe_clean_tx_ring(tx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07005569
5570 vfree(tx_ring->tx_buffer_info);
5571 tx_ring->tx_buffer_info = NULL;
5572
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005573 /* if not set, then don't free */
5574 if (!tx_ring->desc)
5575 return;
5576
5577 dma_free_coherent(tx_ring->dev, tx_ring->size,
5578 tx_ring->desc, tx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07005579
5580 tx_ring->desc = NULL;
5581}
5582
5583/**
5584 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5585 * @adapter: board private structure
5586 *
5587 * Free all transmit software resources
5588 **/
5589static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5590{
5591 int i;
5592
5593 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005594 if (adapter->tx_ring[i]->desc)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005595 ixgbe_free_tx_resources(adapter->tx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005596}
5597
5598/**
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005599 * ixgbe_free_rx_resources - Free Rx Resources
Auke Kok9a799d72007-09-15 14:07:45 -07005600 * @rx_ring: ring to clean the resources from
5601 *
5602 * Free all receive software resources
5603 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005604void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005605{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005606 ixgbe_clean_rx_ring(rx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07005607
5608 vfree(rx_ring->rx_buffer_info);
5609 rx_ring->rx_buffer_info = NULL;
5610
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005611 /* if not set, then don't free */
5612 if (!rx_ring->desc)
5613 return;
5614
5615 dma_free_coherent(rx_ring->dev, rx_ring->size,
5616 rx_ring->desc, rx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07005617
5618 rx_ring->desc = NULL;
5619}
5620
5621/**
5622 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5623 * @adapter: board private structure
5624 *
5625 * Free all receive software resources
5626 **/
5627static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5628{
5629 int i;
5630
Alexander Duyck7c8ae652012-05-05 05:32:47 +00005631#ifdef IXGBE_FCOE
5632 ixgbe_free_fcoe_ddp_resources(adapter);
5633
5634#endif
Auke Kok9a799d72007-09-15 14:07:45 -07005635 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005636 if (adapter->rx_ring[i]->desc)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005637 ixgbe_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005638}
5639
5640/**
Auke Kok9a799d72007-09-15 14:07:45 -07005641 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5642 * @netdev: network interface device structure
5643 * @new_mtu: new value for maximum frame size
5644 *
5645 * Returns 0 on success, negative on failure
5646 **/
5647static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5648{
5649 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5650 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5651
Jesse Brandeburg42c783c2008-09-11 19:56:28 -07005652 /* MTU < 68 is an error and causes problems on some kernels */
Alexander Duyck655309e2012-02-08 07:50:35 +00005653 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
5654 return -EINVAL;
5655
5656 /*
Alexander Duyck872844d2012-08-15 02:10:43 +00005657 * For 82599EB we cannot allow legacy VFs to enable their receive
5658 * paths when MTU greater than 1500 is configured. So display a
5659 * warning that legacy VFs will be disabled.
Alexander Duyck655309e2012-02-08 07:50:35 +00005660 */
5661 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
5662 (adapter->hw.mac.type == ixgbe_mac_82599EB) &&
Alexander Duyckc5604512013-01-09 08:50:42 +00005663 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
Alexander Duyck872844d2012-08-15 02:10:43 +00005664 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n");
Auke Kok9a799d72007-09-15 14:07:45 -07005665
Emil Tantilov396e7992010-07-01 20:05:12 +00005666 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
Alexander Duyck655309e2012-02-08 07:50:35 +00005667
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005668 /* must set new MTU before calling down or up */
Auke Kok9a799d72007-09-15 14:07:45 -07005669 netdev->mtu = new_mtu;
5670
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005671 if (netif_running(netdev))
5672 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005673
5674 return 0;
5675}
5676
5677/**
5678 * ixgbe_open - Called when a network interface is made active
5679 * @netdev: network interface device structure
5680 *
5681 * Returns 0 on success, negative value on failure
5682 *
5683 * The open entry point is called when a network interface is made
5684 * active by the system (IFF_UP). At this point all resources needed
5685 * for transmit and receive operations are allocated, the interrupt
5686 * handler is registered with the OS, the watchdog timer is started,
5687 * and the stack is notified that the interface is ready.
5688 **/
5689static int ixgbe_open(struct net_device *netdev)
5690{
5691 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Don Skidmore961fac82015-06-09 16:09:47 -07005692 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend2a47fa42013-11-06 09:54:52 -08005693 int err, queues;
Auke Kok9a799d72007-09-15 14:07:45 -07005694
Auke Kok4bebfaa2008-02-11 09:26:01 -08005695 /* disallow open during test */
5696 if (test_bit(__IXGBE_TESTING, &adapter->state))
5697 return -EBUSY;
5698
Jesse Brandeburg54386462009-04-17 20:44:27 +00005699 netif_carrier_off(netdev);
5700
Auke Kok9a799d72007-09-15 14:07:45 -07005701 /* allocate transmit descriptors */
5702 err = ixgbe_setup_all_tx_resources(adapter);
5703 if (err)
5704 goto err_setup_tx;
5705
Auke Kok9a799d72007-09-15 14:07:45 -07005706 /* allocate receive descriptors */
5707 err = ixgbe_setup_all_rx_resources(adapter);
5708 if (err)
5709 goto err_setup_rx;
5710
5711 ixgbe_configure(adapter);
5712
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005713 err = ixgbe_request_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005714 if (err)
5715 goto err_req_irq;
5716
Alexander Duyckac802f52012-07-12 05:52:53 +00005717 /* Notify the stack of the actual queue counts. */
John Fastabend2a47fa42013-11-06 09:54:52 -08005718 if (adapter->num_rx_pools > 1)
5719 queues = adapter->num_rx_queues_per_pool;
5720 else
5721 queues = adapter->num_tx_queues;
5722
5723 err = netif_set_real_num_tx_queues(netdev, queues);
Alexander Duyckac802f52012-07-12 05:52:53 +00005724 if (err)
5725 goto err_set_queues;
5726
John Fastabend2a47fa42013-11-06 09:54:52 -08005727 if (adapter->num_rx_pools > 1 &&
5728 adapter->num_rx_queues > IXGBE_MAX_L2A_QUEUES)
5729 queues = IXGBE_MAX_L2A_QUEUES;
5730 else
5731 queues = adapter->num_rx_queues;
5732 err = netif_set_real_num_rx_queues(netdev, queues);
Alexander Duyckac802f52012-07-12 05:52:53 +00005733 if (err)
5734 goto err_set_queues;
5735
Jacob Keller1a71ab22012-08-25 03:54:19 +00005736 ixgbe_ptp_init(adapter);
Jacob Keller1a71ab22012-08-25 03:54:19 +00005737
Alexander Duyckc7ccde02011-07-21 00:40:40 +00005738 ixgbe_up_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005739
Don Skidmore3f207802014-12-23 07:40:34 +00005740#if IS_ENABLED(CONFIG_IXGBE_VXLAN)
5741 vxlan_get_rx_port(netdev);
5742
5743#endif
Auke Kok9a799d72007-09-15 14:07:45 -07005744 return 0;
5745
Alexander Duyckac802f52012-07-12 05:52:53 +00005746err_set_queues:
5747 ixgbe_free_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005748err_req_irq:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00005749 ixgbe_free_all_rx_resources(adapter);
Don Skidmore961fac82015-06-09 16:09:47 -07005750 if (hw->phy.ops.set_phy_power && !adapter->wol)
5751 hw->phy.ops.set_phy_power(&adapter->hw, false);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005752err_setup_rx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00005753 ixgbe_free_all_tx_resources(adapter);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00005754err_setup_tx:
Auke Kok9a799d72007-09-15 14:07:45 -07005755 ixgbe_reset(adapter);
5756
5757 return err;
5758}
5759
Jacob Kellera0cccce2014-05-16 05:12:29 +00005760static void ixgbe_close_suspend(struct ixgbe_adapter *adapter)
5761{
5762 ixgbe_ptp_suspend(adapter);
5763
5764 ixgbe_down(adapter);
5765 ixgbe_free_irq(adapter);
5766
5767 ixgbe_free_all_tx_resources(adapter);
5768 ixgbe_free_all_rx_resources(adapter);
5769}
5770
Auke Kok9a799d72007-09-15 14:07:45 -07005771/**
5772 * ixgbe_close - Disables a network interface
5773 * @netdev: network interface device structure
5774 *
5775 * Returns 0, this is not allowed to fail
5776 *
5777 * The close entry point is called when an interface is de-activated
5778 * by the OS. The hardware is still under the drivers control, but
5779 * needs to be disabled. A global MAC reset is issued to stop the
5780 * hardware, and all transmit and receive resources are freed.
5781 **/
5782static int ixgbe_close(struct net_device *netdev)
5783{
5784 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005785
Jacob Keller1a71ab22012-08-25 03:54:19 +00005786 ixgbe_ptp_stop(adapter);
Jacob Keller1a71ab22012-08-25 03:54:19 +00005787
Jacob Kellera0cccce2014-05-16 05:12:29 +00005788 ixgbe_close_suspend(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005789
Alexander Duycke4911d52011-05-11 07:18:52 +00005790 ixgbe_fdir_filter_exit(adapter);
5791
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08005792 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005793
5794 return 0;
5795}
5796
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005797#ifdef CONFIG_PM
5798static int ixgbe_resume(struct pci_dev *pdev)
5799{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08005800 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
5801 struct net_device *netdev = adapter->netdev;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005802 u32 err;
5803
Mark Rustad0391bbe2014-02-28 15:48:55 -08005804 adapter->hw.hw_addr = adapter->io_addr;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005805 pci_set_power_state(pdev, PCI_D0);
5806 pci_restore_state(pdev);
Don Skidmore656ab812009-12-23 21:19:19 -08005807 /*
5808 * pci_restore_state clears dev->state_saved so call
5809 * pci_save_state to restore it.
5810 */
5811 pci_save_state(pdev);
gouji-new9ce77662009-05-06 10:44:45 +00005812
5813 err = pci_enable_device_mem(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005814 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00005815 e_dev_err("Cannot enable PCI device from suspend\n");
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005816 return err;
5817 }
Peter Zijlstra4e857c52014-03-17 18:06:10 +01005818 smp_mb__before_atomic();
Mark Rustad41c62842014-03-12 00:38:35 +00005819 clear_bit(__IXGBE_DISABLED, &adapter->state);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005820 pci_set_master(pdev);
5821
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07005822 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005823
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005824 ixgbe_reset(adapter);
5825
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00005826 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5827
Alexander Duyckac802f52012-07-12 05:52:53 +00005828 rtnl_lock();
5829 err = ixgbe_init_interrupt_scheme(adapter);
5830 if (!err && netif_running(netdev))
Alexander Duyckc60fbb02010-11-16 19:26:54 -08005831 err = ixgbe_open(netdev);
Alexander Duyckac802f52012-07-12 05:52:53 +00005832
5833 rtnl_unlock();
5834
5835 if (err)
5836 return err;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005837
5838 netif_device_attach(netdev);
5839
5840 return 0;
5841}
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005842#endif /* CONFIG_PM */
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005843
5844static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005845{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08005846 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
5847 struct net_device *netdev = adapter->netdev;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005848 struct ixgbe_hw *hw = &adapter->hw;
5849 u32 ctrl, fctrl;
5850 u32 wufc = adapter->wol;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005851#ifdef CONFIG_PM
5852 int retval = 0;
5853#endif
5854
5855 netif_device_detach(netdev);
5856
akepner499ab5c2013-03-13 14:54:58 +00005857 rtnl_lock();
Jacob Kellera0cccce2014-05-16 05:12:29 +00005858 if (netif_running(netdev))
5859 ixgbe_close_suspend(adapter);
akepner499ab5c2013-03-13 14:54:58 +00005860 rtnl_unlock();
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005861
Alexander Duyck5f5ae6f2010-11-16 19:26:52 -08005862 ixgbe_clear_interrupt_scheme(adapter);
5863
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005864#ifdef CONFIG_PM
5865 retval = pci_save_state(pdev);
5866 if (retval)
5867 return retval;
Jesse Brandeburg4df10462009-03-13 22:15:31 +00005868
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005869#endif
Jacob Kellerf4f10402013-06-25 07:59:23 +00005870 if (hw->mac.ops.stop_link_on_d3)
5871 hw->mac.ops.stop_link_on_d3(hw);
5872
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005873 if (wufc) {
5874 ixgbe_set_rx_mode(netdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005875
Emil Tantilovec74a472012-09-20 03:33:56 +00005876 /* enable the optics for 82599 SFP+ fiber as we can WoL */
5877 if (hw->mac.ops.enable_tx_laser)
Don Skidmorec509e752012-04-05 08:12:05 +00005878 hw->mac.ops.enable_tx_laser(hw);
5879
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005880 /* turn on all-multi mode if wake on multicast is enabled */
5881 if (wufc & IXGBE_WUFC_MC) {
5882 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5883 fctrl |= IXGBE_FCTRL_MPE;
5884 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5885 }
5886
5887 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5888 ctrl |= IXGBE_CTRL_GIO_DIS;
5889 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5890
5891 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5892 } else {
5893 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5894 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5895 }
5896
Alexander Duyckbd508172010-11-16 19:27:03 -08005897 switch (hw->mac.type) {
5898 case ixgbe_mac_82598EB:
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07005899 pci_wake_from_d3(pdev, false);
Alexander Duyckbd508172010-11-16 19:27:03 -08005900 break;
5901 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08005902 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005903 case ixgbe_mac_X550:
5904 case ixgbe_mac_X550EM_x:
Alexander Duyckbd508172010-11-16 19:27:03 -08005905 pci_wake_from_d3(pdev, !!wufc);
5906 break;
5907 default:
5908 break;
5909 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005910
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005911 *enable_wake = !!wufc;
Don Skidmore961fac82015-06-09 16:09:47 -07005912 if (hw->phy.ops.set_phy_power && !*enable_wake)
5913 hw->phy.ops.set_phy_power(hw, false);
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005914
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005915 ixgbe_release_hw_control(adapter);
5916
Mark Rustad41c62842014-03-12 00:38:35 +00005917 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
5918 pci_disable_device(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005919
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005920 return 0;
5921}
5922
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005923#ifdef CONFIG_PM
5924static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5925{
5926 int retval;
5927 bool wake;
5928
5929 retval = __ixgbe_shutdown(pdev, &wake);
5930 if (retval)
5931 return retval;
5932
5933 if (wake) {
5934 pci_prepare_to_sleep(pdev);
5935 } else {
5936 pci_wake_from_d3(pdev, false);
5937 pci_set_power_state(pdev, PCI_D3hot);
5938 }
5939
5940 return 0;
5941}
5942#endif /* CONFIG_PM */
5943
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005944static void ixgbe_shutdown(struct pci_dev *pdev)
5945{
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005946 bool wake;
5947
5948 __ixgbe_shutdown(pdev, &wake);
5949
5950 if (system_state == SYSTEM_POWER_OFF) {
5951 pci_wake_from_d3(pdev, wake);
5952 pci_set_power_state(pdev, PCI_D3hot);
5953 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005954}
5955
5956/**
Auke Kok9a799d72007-09-15 14:07:45 -07005957 * ixgbe_update_stats - Update the board statistics counters.
5958 * @adapter: board private structure
5959 **/
5960void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5961{
Ajit Khaparde2d86f132009-10-07 02:43:49 +00005962 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07005963 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck5b7da512010-11-16 19:26:50 -08005964 struct ixgbe_hw_stats *hwstats = &adapter->stats;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005965 u64 total_mpc = 0;
5966 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
Alexander Duyck5b7da512010-11-16 19:26:50 -08005967 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
5968 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
Alexander Duyck8a0da212012-01-31 02:59:49 +00005969 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005970
Don Skidmored08935c2010-06-11 13:20:29 +00005971 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5972 test_bit(__IXGBE_RESETTING, &adapter->state))
5973 return;
5974
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005975 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00005976 u64 rsc_count = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005977 u64 rsc_flush = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005978 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck5b7da512010-11-16 19:26:50 -08005979 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
5980 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005981 }
5982 adapter->rsc_total_count = rsc_count;
5983 adapter->rsc_total_flush = rsc_flush;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00005984 }
5985
Alexander Duyck5b7da512010-11-16 19:26:50 -08005986 for (i = 0; i < adapter->num_rx_queues; i++) {
5987 struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
5988 non_eop_descs += rx_ring->rx_stats.non_eop_descs;
5989 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
5990 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
Alexander Duyck8a0da212012-01-31 02:59:49 +00005991 hw_csum_rx_error += rx_ring->rx_stats.csum_err;
Alexander Duyck5b7da512010-11-16 19:26:50 -08005992 bytes += rx_ring->stats.bytes;
5993 packets += rx_ring->stats.packets;
5994 }
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00005995 adapter->non_eop_descs = non_eop_descs;
Alexander Duyck5b7da512010-11-16 19:26:50 -08005996 adapter->alloc_rx_page_failed = alloc_rx_page_failed;
5997 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
Alexander Duyck8a0da212012-01-31 02:59:49 +00005998 adapter->hw_csum_rx_error = hw_csum_rx_error;
Alexander Duyck5b7da512010-11-16 19:26:50 -08005999 netdev->stats.rx_bytes = bytes;
6000 netdev->stats.rx_packets = packets;
6001
6002 bytes = 0;
6003 packets = 0;
6004 /* gather some stats to the adapter struct that are per queue */
6005 for (i = 0; i < adapter->num_tx_queues; i++) {
6006 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
6007 restart_queue += tx_ring->tx_stats.restart_queue;
6008 tx_busy += tx_ring->tx_stats.tx_busy;
6009 bytes += tx_ring->stats.bytes;
6010 packets += tx_ring->stats.packets;
6011 }
6012 adapter->restart_queue = restart_queue;
6013 adapter->tx_busy = tx_busy;
6014 netdev->stats.tx_bytes = bytes;
6015 netdev->stats.tx_packets = packets;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00006016
Joe Perches7ca647b2010-09-07 21:35:40 +00006017 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006018
6019 /* 8 register reads */
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006020 for (i = 0; i < 8; i++) {
6021 /* for packet buffers not used, the register should read 0 */
6022 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
6023 missed_rx += mpc;
Joe Perches7ca647b2010-09-07 21:35:40 +00006024 hwstats->mpc[i] += mpc;
6025 total_mpc += hwstats->mpc[i];
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006026 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
6027 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006028 switch (hw->mac.type) {
6029 case ixgbe_mac_82598EB:
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006030 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
6031 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
6032 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
Joe Perches7ca647b2010-09-07 21:35:40 +00006033 hwstats->pxonrxc[i] +=
6034 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006035 break;
6036 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08006037 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006038 case ixgbe_mac_X550:
6039 case ixgbe_mac_X550EM_x:
Alexander Duyckbd508172010-11-16 19:27:03 -08006040 hwstats->pxonrxc[i] +=
6041 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006042 break;
6043 default:
6044 break;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006045 }
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006046 }
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006047
6048 /*16 register reads */
6049 for (i = 0; i < 16; i++) {
6050 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
6051 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
6052 if ((hw->mac.type == ixgbe_mac_82599EB) ||
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006053 (hw->mac.type == ixgbe_mac_X540) ||
6054 (hw->mac.type == ixgbe_mac_X550) ||
6055 (hw->mac.type == ixgbe_mac_X550EM_x)) {
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006056 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
6057 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */
6058 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
6059 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */
6060 }
6061 }
6062
Joe Perches7ca647b2010-09-07 21:35:40 +00006063 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006064 /* work around hardware counting issue */
Joe Perches7ca647b2010-09-07 21:35:40 +00006065 hwstats->gprc -= missed_rx;
Auke Kok9a799d72007-09-15 14:07:45 -07006066
John Fastabendc84d3242010-11-16 19:27:12 -08006067 ixgbe_update_xoff_received(adapter);
6068
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006069 /* 82598 hardware only has a 32 bit counter in the high register */
Alexander Duyckbd508172010-11-16 19:27:03 -08006070 switch (hw->mac.type) {
6071 case ixgbe_mac_82598EB:
6072 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
Alexander Duyckbd508172010-11-16 19:27:03 -08006073 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
6074 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
6075 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
6076 break;
Don Skidmoreb93a2222010-11-16 19:27:17 -08006077 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006078 case ixgbe_mac_X550:
6079 case ixgbe_mac_X550EM_x:
6080 /* OS2BMC stats are X540 and later */
Emil Tantilov58f6bcf2011-04-21 08:43:43 +00006081 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
6082 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
6083 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
6084 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
6085 case ixgbe_mac_82599EB:
Alexander Duycka4d4f622012-03-28 08:03:32 +00006086 for (i = 0; i < 16; i++)
6087 adapter->hw_rx_no_dma_resources +=
6088 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
Joe Perches7ca647b2010-09-07 21:35:40 +00006089 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
Alexander Duyckbd508172010-11-16 19:27:03 -08006090 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00006091 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
Alexander Duyckbd508172010-11-16 19:27:03 -08006092 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00006093 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
Alexander Duyckbd508172010-11-16 19:27:03 -08006094 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00006095 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
Joe Perches7ca647b2010-09-07 21:35:40 +00006096 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
6097 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
Yi Zou6d455222009-05-13 13:12:16 +00006098#ifdef IXGBE_FCOE
Joe Perches7ca647b2010-09-07 21:35:40 +00006099 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
6100 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
6101 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
6102 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
6103 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
6104 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
Amir Hanania7b859eb2011-08-31 02:07:55 +00006105 /* Add up per cpu counters for total ddp aloc fail */
Alexander Duyck5a1ee272012-05-05 17:14:28 +00006106 if (adapter->fcoe.ddp_pool) {
6107 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
6108 struct ixgbe_fcoe_ddp_pool *ddp_pool;
6109 unsigned int cpu;
6110 u64 noddp = 0, noddp_ext_buff = 0;
Amir Hanania7b859eb2011-08-31 02:07:55 +00006111 for_each_possible_cpu(cpu) {
Alexander Duyck5a1ee272012-05-05 17:14:28 +00006112 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu);
6113 noddp += ddp_pool->noddp;
6114 noddp_ext_buff += ddp_pool->noddp_ext_buff;
Amir Hanania7b859eb2011-08-31 02:07:55 +00006115 }
Alexander Duyck5a1ee272012-05-05 17:14:28 +00006116 hwstats->fcoe_noddp = noddp;
6117 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff;
Amir Hanania7b859eb2011-08-31 02:07:55 +00006118 }
Yi Zou6d455222009-05-13 13:12:16 +00006119#endif /* IXGBE_FCOE */
Alexander Duyckbd508172010-11-16 19:27:03 -08006120 break;
6121 default:
6122 break;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006123 }
Auke Kok9a799d72007-09-15 14:07:45 -07006124 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
Joe Perches7ca647b2010-09-07 21:35:40 +00006125 hwstats->bprc += bprc;
6126 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006127 if (hw->mac.type == ixgbe_mac_82598EB)
Joe Perches7ca647b2010-09-07 21:35:40 +00006128 hwstats->mprc -= bprc;
6129 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
6130 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
6131 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
6132 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
6133 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
6134 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
6135 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
6136 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006137 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00006138 hwstats->lxontxc += lxon;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006139 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00006140 hwstats->lxofftxc += lxoff;
Joe Perches7ca647b2010-09-07 21:35:40 +00006141 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
6142 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006143 /*
6144 * 82598 errata - tx of flow control packets is included in tx counters
6145 */
6146 xon_off_tot = lxon + lxoff;
Joe Perches7ca647b2010-09-07 21:35:40 +00006147 hwstats->gptc -= xon_off_tot;
6148 hwstats->mptc -= xon_off_tot;
6149 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
6150 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
6151 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
6152 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
6153 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
6154 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
6155 hwstats->ptc64 -= xon_off_tot;
6156 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
6157 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
6158 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
6159 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
6160 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
6161 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
Auke Kok9a799d72007-09-15 14:07:45 -07006162
6163 /* Fill out the OS statistics structure */
Joe Perches7ca647b2010-09-07 21:35:40 +00006164 netdev->stats.multicast = hwstats->mprc;
Auke Kok9a799d72007-09-15 14:07:45 -07006165
6166 /* Rx Errors */
Joe Perches7ca647b2010-09-07 21:35:40 +00006167 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00006168 netdev->stats.rx_dropped = 0;
Joe Perches7ca647b2010-09-07 21:35:40 +00006169 netdev->stats.rx_length_errors = hwstats->rlec;
6170 netdev->stats.rx_crc_errors = hwstats->crcerrs;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00006171 netdev->stats.rx_missed_errors = total_mpc;
Auke Kok9a799d72007-09-15 14:07:45 -07006172}
6173
6174/**
Alexander Duyckd034acf2011-04-27 09:25:34 +00006175 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006176 * @adapter: pointer to the device adapter structure
Auke Kok9a799d72007-09-15 14:07:45 -07006177 **/
Alexander Duyckd034acf2011-04-27 09:25:34 +00006178static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07006179{
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006180 struct ixgbe_hw *hw = &adapter->hw;
6181 int i;
6182
Alexander Duyckd034acf2011-04-27 09:25:34 +00006183 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
6184 return;
6185
6186 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
6187
6188 /* if interface is down do nothing */
6189 if (test_bit(__IXGBE_DOWN, &adapter->state))
6190 return;
6191
6192 /* do nothing if we are not using signature filters */
6193 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
6194 return;
6195
6196 adapter->fdir_overflow++;
6197
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006198 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
6199 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck7d637bc2010-11-16 19:26:56 -08006200 set_bit(__IXGBE_TX_FDIR_INIT_DONE,
Jacob Kellere7cf7452014-04-09 06:03:10 +00006201 &(adapter->tx_ring[i]->state));
Alexander Duyckd034acf2011-04-27 09:25:34 +00006202 /* re-enable flow director interrupts */
6203 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006204 } else {
Emil Tantilov396e7992010-07-01 20:05:12 +00006205 e_err(probe, "failed to finish FDIR re-initialization, "
Emil Tantilov849c4542010-06-03 16:53:41 +00006206 "ignored adding FDIR ATR filters\n");
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006207 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006208}
6209
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006210/**
6211 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006212 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006213 *
6214 * This function serves two purposes. First it strobes the interrupt lines
Stephen Hemminger52f33af2011-12-22 16:34:52 +00006215 * in order to make certain interrupts are occurring. Secondly it sets the
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006216 * bits needed to check for TX hangs. As a result we should immediately
Stephen Hemminger52f33af2011-12-22 16:34:52 +00006217 * determine if a hang has occurred.
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006218 */
6219static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
6220{
Auke Kok9a799d72007-09-15 14:07:45 -07006221 struct ixgbe_hw *hw = &adapter->hw;
6222 u64 eics = 0;
6223 int i;
6224
Mark Rustad09f40ae2014-01-14 18:53:11 -08006225 /* If we're down, removing or resetting, just bail */
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006226 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08006227 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006228 test_bit(__IXGBE_RESETTING, &adapter->state))
6229 return;
Alexander Duyckfe49f042009-06-04 16:00:09 +00006230
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006231 /* Force detection of hung controller */
6232 if (netif_carrier_ok(adapter->netdev)) {
6233 for (i = 0; i < adapter->num_tx_queues; i++)
6234 set_check_for_tx_hang(adapter->tx_ring[i]);
6235 }
Alexander Duyckfe49f042009-06-04 16:00:09 +00006236
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00006237 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00006238 /*
6239 * for legacy and MSI interrupts don't set any bits
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00006240 * that are enabled for EIAM, because this operation
Alexander Duyckfe49f042009-06-04 16:00:09 +00006241 * would set *both* EIMS and EICS for any bit in EIAM
6242 */
6243 IXGBE_WRITE_REG(hw, IXGBE_EICS,
6244 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006245 } else {
6246 /* get one bit for every active tx/rx interrupt vector */
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00006247 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006248 struct ixgbe_q_vector *qv = adapter->q_vector[i];
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00006249 if (qv->rx.ring || qv->tx.ring)
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006250 eics |= ((u64)1 << i);
6251 }
Alexander Duyckfe49f042009-06-04 16:00:09 +00006252 }
6253
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006254 /* Cause software interrupt to ensure rings are cleaned */
Alexander Duyckfe49f042009-06-04 16:00:09 +00006255 ixgbe_irq_rearm_queues(adapter, eics);
Alexander Duyckfe49f042009-06-04 16:00:09 +00006256}
6257
6258/**
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006259 * ixgbe_watchdog_update_link - update the link status
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006260 * @adapter: pointer to the device adapter structure
6261 * @link_speed: pointer to a u32 to store the link_speed
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006262 **/
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006263static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006264{
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006265 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006266 u32 link_speed = adapter->link_speed;
6267 bool link_up = adapter->link_up;
Alexander Duyck041441d2012-04-19 17:48:48 +00006268 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006269
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006270 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
6271 return;
6272
6273 if (hw->mac.ops.check_link) {
6274 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006275 } else {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006276 /* always assume link is up, if no check link function */
6277 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
6278 link_up = true;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006279 }
Alexander Duyck041441d2012-04-19 17:48:48 +00006280
6281 if (adapter->ixgbe_ieee_pfc)
6282 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
6283
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00006284 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) {
Alexander Duyck041441d2012-04-19 17:48:48 +00006285 hw->mac.ops.fc_enable(hw);
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00006286 ixgbe_set_rx_drop_en(adapter);
6287 }
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006288
6289 if (link_up ||
6290 time_after(jiffies, (adapter->link_check_timeout +
6291 IXGBE_TRY_LINK_TIMEOUT))) {
6292 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
6293 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
6294 IXGBE_WRITE_FLUSH(hw);
6295 }
6296
6297 adapter->link_up = link_up;
6298 adapter->link_speed = link_speed;
6299}
6300
Alexander Duyck107d3012012-10-02 00:17:03 +00006301static void ixgbe_update_default_up(struct ixgbe_adapter *adapter)
6302{
6303#ifdef CONFIG_IXGBE_DCB
6304 struct net_device *netdev = adapter->netdev;
6305 struct dcb_app app = {
6306 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
6307 .protocol = 0,
6308 };
6309 u8 up = 0;
6310
6311 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
6312 up = dcb_ieee_getapp_mask(netdev, &app);
6313
6314 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0;
6315#endif
6316}
6317
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006318/**
6319 * ixgbe_watchdog_link_is_up - update netif_carrier status and
6320 * print link up message
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006321 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006322 **/
6323static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
6324{
6325 struct net_device *netdev = adapter->netdev;
6326 struct ixgbe_hw *hw = &adapter->hw;
Emil Tantilovcdc04dc2014-03-20 03:47:53 +00006327 struct net_device *upper;
6328 struct list_head *iter;
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006329 u32 link_speed = adapter->link_speed;
6330 bool flow_rx, flow_tx;
6331
6332 /* only continue if link was previously down */
6333 if (netif_carrier_ok(netdev))
6334 return;
6335
6336 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
6337
6338 switch (hw->mac.type) {
6339 case ixgbe_mac_82598EB: {
6340 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
6341 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
6342 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
6343 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
6344 }
6345 break;
6346 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006347 case ixgbe_mac_X550:
6348 case ixgbe_mac_X550EM_x:
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006349 case ixgbe_mac_82599EB: {
6350 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
6351 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
6352 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
6353 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
6354 }
6355 break;
6356 default:
6357 flow_tx = false;
6358 flow_rx = false;
6359 break;
6360 }
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00006361
Jacob Keller6cb562d2012-12-05 07:24:41 +00006362 adapter->last_rx_ptp_check = jiffies;
6363
Jacob Keller8fecf672013-06-21 08:14:32 +00006364 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00006365 ixgbe_ptp_start_cyclecounter(adapter);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00006366
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006367 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
6368 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
6369 "10 Gbps" :
6370 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
6371 "1 Gbps" :
6372 (link_speed == IXGBE_LINK_SPEED_100_FULL ?
6373 "100 Mbps" :
6374 "unknown speed"))),
6375 ((flow_rx && flow_tx) ? "RX/TX" :
6376 (flow_rx ? "RX" :
6377 (flow_tx ? "TX" : "None"))));
6378
6379 netif_carrier_on(netdev);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006380 ixgbe_check_vf_rate_limit(adapter);
Alexander Duyckbefa2af2012-05-05 05:30:38 +00006381
Emil Tantilovcdc04dc2014-03-20 03:47:53 +00006382 /* enable transmits */
6383 netif_tx_wake_all_queues(adapter->netdev);
6384
6385 /* enable any upper devices */
6386 rtnl_lock();
6387 netdev_for_each_all_upper_dev_rcu(adapter->netdev, upper, iter) {
6388 if (netif_is_macvlan(upper)) {
6389 struct macvlan_dev *vlan = netdev_priv(upper);
6390
6391 if (vlan->fwd_priv)
6392 netif_tx_wake_all_queues(upper);
6393 }
6394 }
6395 rtnl_unlock();
6396
Alexander Duyck107d3012012-10-02 00:17:03 +00006397 /* update the default user priority for VFs */
6398 ixgbe_update_default_up(adapter);
6399
Alexander Duyckbefa2af2012-05-05 05:30:38 +00006400 /* ping all the active vfs to let them know link has changed */
6401 ixgbe_ping_all_vfs(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006402}
6403
6404/**
6405 * ixgbe_watchdog_link_is_down - update netif_carrier status and
6406 * print link down message
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006407 * @adapter: pointer to the adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006408 **/
Alexander Duyck581330b2012-02-08 07:51:47 +00006409static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter)
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006410{
6411 struct net_device *netdev = adapter->netdev;
6412 struct ixgbe_hw *hw = &adapter->hw;
6413
6414 adapter->link_up = false;
6415 adapter->link_speed = 0;
6416
6417 /* only continue if link was up previously */
6418 if (!netif_carrier_ok(netdev))
6419 return;
6420
6421 /* poll for SFP+ cable when link is down */
6422 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
6423 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
6424
Jacob Keller8fecf672013-06-21 08:14:32 +00006425 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00006426 ixgbe_ptp_start_cyclecounter(adapter);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00006427
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006428 e_info(drv, "NIC Link is Down\n");
6429 netif_carrier_off(netdev);
Alexander Duyckbefa2af2012-05-05 05:30:38 +00006430
6431 /* ping all the active vfs to let them know link has changed */
6432 ixgbe_ping_all_vfs(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006433}
6434
Emil Tantilov07923c12014-08-12 07:12:08 +00006435static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter)
6436{
6437 int i;
6438
6439 for (i = 0; i < adapter->num_tx_queues; i++) {
6440 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
6441
6442 if (tx_ring->next_to_use != tx_ring->next_to_clean)
6443 return true;
6444 }
6445
6446 return false;
6447}
6448
6449static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter)
6450{
6451 struct ixgbe_hw *hw = &adapter->hw;
6452 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
6453 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
6454
6455 int i, j;
6456
6457 if (!adapter->num_vfs)
6458 return false;
6459
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006460 /* resetting the PF is only needed for MAC before X550 */
6461 if (hw->mac.type >= ixgbe_mac_X550)
6462 return false;
6463
Emil Tantilov07923c12014-08-12 07:12:08 +00006464 for (i = 0; i < adapter->num_vfs; i++) {
6465 for (j = 0; j < q_per_pool; j++) {
6466 u32 h, t;
6467
6468 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j));
6469 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j));
6470
6471 if (h != t)
6472 return true;
6473 }
6474 }
6475
6476 return false;
6477}
6478
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006479/**
6480 * ixgbe_watchdog_flush_tx - flush queues on link down
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006481 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006482 **/
6483static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
6484{
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006485 if (!netif_carrier_ok(adapter->netdev)) {
Emil Tantilov07923c12014-08-12 07:12:08 +00006486 if (ixgbe_ring_tx_pending(adapter) ||
6487 ixgbe_vf_tx_pending(adapter)) {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006488 /* We've lost link, so the controller stops DMA,
6489 * but we've got queued Tx work that's never going
6490 * to get done, so reset controller to flush Tx.
6491 * (Do the reset outside of interrupt context).
6492 */
Jacob Keller12ff3f32012-12-01 07:57:17 +00006493 e_warn(drv, "initiating reset to clear Tx work after link loss\n");
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006494 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006495 }
6496 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006497}
6498
Emil Tantilov9079e412014-11-19 03:18:19 +00006499#ifdef CONFIG_PCI_IOV
6500static inline void ixgbe_issue_vf_flr(struct ixgbe_adapter *adapter,
6501 struct pci_dev *vfdev)
6502{
6503 if (!pci_wait_for_pending_transaction(vfdev))
6504 e_dev_warn("Issuing VFLR with pending transactions\n");
6505
6506 e_dev_err("Issuing VFLR for VF %s\n", pci_name(vfdev));
6507 pcie_capability_set_word(vfdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
6508
6509 msleep(100);
6510}
6511
6512static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter)
6513{
6514 struct ixgbe_hw *hw = &adapter->hw;
6515 struct pci_dev *pdev = adapter->pdev;
6516 struct pci_dev *vfdev;
6517 u32 gpc;
6518 int pos;
6519 unsigned short vf_id;
6520
6521 if (!(netif_carrier_ok(adapter->netdev)))
6522 return;
6523
6524 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC);
6525 if (gpc) /* If incrementing then no need for the check below */
6526 return;
6527 /* Check to see if a bad DMA write target from an errant or
6528 * malicious VF has caused a PCIe error. If so then we can
6529 * issue a VFLR to the offending VF(s) and then resume without
6530 * requesting a full slot reset.
6531 */
6532
6533 if (!pdev)
6534 return;
6535
6536 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
6537 if (!pos)
6538 return;
6539
6540 /* get the device ID for the VF */
6541 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
6542
6543 /* check status reg for all VFs owned by this PF */
6544 vfdev = pci_get_device(pdev->vendor, vf_id, NULL);
6545 while (vfdev) {
6546 if (vfdev->is_virtfn && (vfdev->physfn == pdev)) {
6547 u16 status_reg;
6548
6549 pci_read_config_word(vfdev, PCI_STATUS, &status_reg);
6550 if (status_reg & PCI_STATUS_REC_MASTER_ABORT)
6551 /* issue VFLR */
6552 ixgbe_issue_vf_flr(adapter, vfdev);
6553 }
6554
6555 vfdev = pci_get_device(pdev->vendor, vf_id, vfdev);
6556 }
6557}
6558
Greg Rosea985b6c32010-11-18 03:02:52 +00006559static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
6560{
6561 u32 ssvpc;
6562
Greg Rose0584d992012-08-08 00:00:58 +00006563 /* Do not perform spoof check for 82598 or if not in IOV mode */
6564 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
6565 adapter->num_vfs == 0)
Greg Rosea985b6c32010-11-18 03:02:52 +00006566 return;
6567
6568 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
6569
6570 /*
6571 * ssvpc register is cleared on read, if zero then no
6572 * spoofed packets in the last interval.
6573 */
6574 if (!ssvpc)
6575 return;
6576
Emil Tantilovd6ea0752012-08-08 06:28:37 +00006577 e_warn(drv, "%u Spoofed packets detected\n", ssvpc);
Greg Rosea985b6c32010-11-18 03:02:52 +00006578}
Emil Tantilov9079e412014-11-19 03:18:19 +00006579#else
6580static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter)
6581{
6582}
6583
6584static void
6585ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter)
6586{
6587}
6588#endif /* CONFIG_PCI_IOV */
6589
Greg Rosea985b6c32010-11-18 03:02:52 +00006590
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006591/**
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006592 * ixgbe_watchdog_subtask - check and bring link up
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006593 * @adapter: pointer to the device adapter structure
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006594 **/
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006595static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006596{
Mark Rustad09f40ae2014-01-14 18:53:11 -08006597 /* if interface is down, removing or resetting, do nothing */
Emil Tantilov7edebf92011-08-27 07:18:37 +00006598 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08006599 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Emil Tantilov7edebf92011-08-27 07:18:37 +00006600 test_bit(__IXGBE_RESETTING, &adapter->state))
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006601 return;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006602
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006603 ixgbe_watchdog_update_link(adapter);
John Fastabend10eec952010-02-03 14:23:32 +00006604
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006605 if (adapter->link_up)
6606 ixgbe_watchdog_link_is_up(adapter);
6607 else
6608 ixgbe_watchdog_link_is_down(adapter);
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00006609
Emil Tantilov9079e412014-11-19 03:18:19 +00006610 ixgbe_check_for_bad_vf(adapter);
Greg Rosea985b6c32010-11-18 03:02:52 +00006611 ixgbe_spoof_check(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006612 ixgbe_update_stats(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006613
6614 ixgbe_watchdog_flush_tx(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006615}
6616
Alexander Duyck70864002011-04-27 09:13:56 +00006617/**
6618 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006619 * @adapter: the ixgbe adapter structure
Alexander Duyck70864002011-04-27 09:13:56 +00006620 **/
6621static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
6622{
6623 struct ixgbe_hw *hw = &adapter->hw;
6624 s32 err;
6625
6626 /* not searching for SFP so there is nothing to do here */
6627 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
6628 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
6629 return;
6630
6631 /* someone else is in init, wait until next service event */
6632 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
6633 return;
6634
6635 err = hw->phy.ops.identify_sfp(hw);
6636 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
6637 goto sfp_out;
6638
6639 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
6640 /* If no cable is present, then we need to reset
6641 * the next time we find a good cable. */
6642 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
6643 }
6644
6645 /* exit on error */
6646 if (err)
6647 goto sfp_out;
6648
6649 /* exit if reset not needed */
6650 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
6651 goto sfp_out;
6652
6653 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
6654
6655 /*
6656 * A module may be identified correctly, but the EEPROM may not have
6657 * support for that module. setup_sfp() will fail in that case, so
6658 * we should not allow that module to load.
6659 */
6660 if (hw->mac.type == ixgbe_mac_82598EB)
6661 err = hw->phy.ops.reset(hw);
6662 else
6663 err = hw->mac.ops.setup_sfp(hw);
6664
6665 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
6666 goto sfp_out;
6667
6668 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
6669 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
6670
6671sfp_out:
6672 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
6673
6674 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
6675 (adapter->netdev->reg_state == NETREG_REGISTERED)) {
6676 e_dev_err("failed to initialize because an unsupported "
6677 "SFP+ module type was detected.\n");
6678 e_dev_err("Reload the driver after installing a "
6679 "supported module.\n");
6680 unregister_netdev(adapter->netdev);
6681 }
6682}
6683
6684/**
6685 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006686 * @adapter: the ixgbe adapter structure
Alexander Duyck70864002011-04-27 09:13:56 +00006687 **/
6688static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
6689{
6690 struct ixgbe_hw *hw = &adapter->hw;
Josh Hay3d292262012-12-15 03:28:19 +00006691 u32 speed;
6692 bool autoneg = false;
Alexander Duyck70864002011-04-27 09:13:56 +00006693
6694 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
6695 return;
6696
6697 /* someone else is in init, wait until next service event */
6698 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
6699 return;
6700
6701 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
6702
Josh Hay3d292262012-12-15 03:28:19 +00006703 speed = hw->phy.autoneg_advertised;
Emil Tantiloved33ff62013-08-30 07:55:24 +00006704 if ((!speed) && (hw->mac.ops.get_link_capabilities)) {
Josh Hay3d292262012-12-15 03:28:19 +00006705 hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg);
Emil Tantiloved33ff62013-08-30 07:55:24 +00006706
6707 /* setup the highest link when no autoneg */
6708 if (!autoneg) {
6709 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
6710 speed = IXGBE_LINK_SPEED_10GB_FULL;
6711 }
6712 }
6713
Alexander Duyck70864002011-04-27 09:13:56 +00006714 if (hw->mac.ops.setup_link)
Josh Hayfd0326f2012-12-15 03:28:30 +00006715 hw->mac.ops.setup_link(hw, speed, true);
Alexander Duyck70864002011-04-27 09:13:56 +00006716
6717 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
6718 adapter->link_check_timeout = jiffies;
6719 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
6720}
6721
6722/**
6723 * ixgbe_service_timer - Timer Call-back
6724 * @data: pointer to adapter cast into an unsigned long
6725 **/
6726static void ixgbe_service_timer(unsigned long data)
6727{
6728 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
6729 unsigned long next_event_offset;
6730
6731 /* poll faster when waiting for link */
6732 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
6733 next_event_offset = HZ / 10;
6734 else
6735 next_event_offset = HZ * 2;
6736
6737 /* Reset the timer */
6738 mod_timer(&adapter->service_timer, next_event_offset + jiffies);
6739
Emil Tantilov9079e412014-11-19 03:18:19 +00006740 ixgbe_service_event_schedule(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +00006741}
6742
Don Skidmore597f22d2015-06-09 16:52:02 -07006743static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter)
6744{
6745 struct ixgbe_hw *hw = &adapter->hw;
6746 u32 status;
6747
6748 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT))
6749 return;
6750
6751 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT;
6752
6753 if (!hw->phy.ops.handle_lasi)
6754 return;
6755
6756 status = hw->phy.ops.handle_lasi(&adapter->hw);
6757 if (status != IXGBE_ERR_OVERTEMP)
6758 return;
6759
6760 e_crit(drv, "%s\n", ixgbe_overheat_msg);
6761}
6762
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006763static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
6764{
6765 if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED))
6766 return;
6767
6768 adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED;
6769
Mark Rustad09f40ae2014-01-14 18:53:11 -08006770 /* If we're already down, removing or resetting, just bail */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006771 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08006772 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006773 test_bit(__IXGBE_RESETTING, &adapter->state))
6774 return;
6775
6776 ixgbe_dump(adapter);
6777 netdev_err(adapter->netdev, "Reset adapter\n");
6778 adapter->tx_timeout_count++;
6779
John Fastabend8f4c5c92014-01-16 02:30:05 -08006780 rtnl_lock();
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006781 ixgbe_reinit_locked(adapter);
John Fastabend8f4c5c92014-01-16 02:30:05 -08006782 rtnl_unlock();
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006783}
6784
Alexander Duyck70864002011-04-27 09:13:56 +00006785/**
6786 * ixgbe_service_task - manages and runs subtasks
6787 * @work: pointer to work_struct containing our data
6788 **/
6789static void ixgbe_service_task(struct work_struct *work)
6790{
6791 struct ixgbe_adapter *adapter = container_of(work,
6792 struct ixgbe_adapter,
6793 service_task);
Mark Rustadb0483c82014-01-14 18:53:17 -08006794 if (ixgbe_removed(adapter->hw.hw_addr)) {
6795 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
6796 rtnl_lock();
6797 ixgbe_down(adapter);
6798 rtnl_unlock();
6799 }
6800 ixgbe_service_event_complete(adapter);
6801 return;
6802 }
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006803 ixgbe_reset_subtask(adapter);
Don Skidmore597f22d2015-06-09 16:52:02 -07006804 ixgbe_phy_interrupt_subtask(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +00006805 ixgbe_sfp_detection_subtask(adapter);
6806 ixgbe_sfp_link_config_subtask(adapter);
Alexander Duyckf0f97782011-04-22 04:08:09 +00006807 ixgbe_check_overtemp_subtask(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006808 ixgbe_watchdog_subtask(adapter);
Alexander Duyckd034acf2011-04-27 09:25:34 +00006809 ixgbe_fdir_reinit_subtask(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00006810 ixgbe_check_hang_subtask(adapter);
Jacob Keller891dc082012-12-05 07:24:46 +00006811
Jacob Keller8fecf672013-06-21 08:14:32 +00006812 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) {
Jacob Keller891dc082012-12-05 07:24:46 +00006813 ixgbe_ptp_overflow_check(adapter);
6814 ixgbe_ptp_rx_hang(adapter);
6815 }
Alexander Duyck70864002011-04-27 09:13:56 +00006816
6817 ixgbe_service_event_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006818}
6819
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00006820static int ixgbe_tso(struct ixgbe_ring *tx_ring,
6821 struct ixgbe_tx_buffer *first,
Alexander Duyck244e27a2012-02-08 07:51:11 +00006822 u8 *hdr_len)
Alexander Duyck897ab152011-05-27 05:31:47 +00006823{
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00006824 struct sk_buff *skb = first->skb;
Alexander Duyck897ab152011-05-27 05:31:47 +00006825 u32 vlan_macip_lens, type_tucmd;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006826 u32 mss_l4len_idx, l4len;
Francois Romieu2049e1f2014-03-30 03:14:27 +00006827 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07006828
Alexander Duyck8f4fbb92012-10-30 06:01:40 +00006829 if (skb->ip_summed != CHECKSUM_PARTIAL)
6830 return 0;
6831
Alexander Duyck897ab152011-05-27 05:31:47 +00006832 if (!skb_is_gso(skb))
6833 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006834
Francois Romieu2049e1f2014-03-30 03:14:27 +00006835 err = skb_cow_head(skb, 0);
6836 if (err < 0)
6837 return err;
Joe Perches7ca647b2010-09-07 21:35:40 +00006838
Alexander Duyck897ab152011-05-27 05:31:47 +00006839 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
6840 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
6841
Joe Perchesa1108ff2014-03-13 05:19:25 +00006842 if (first->protocol == htons(ETH_P_IP)) {
Alexander Duyck897ab152011-05-27 05:31:47 +00006843 struct iphdr *iph = ip_hdr(skb);
6844 iph->tot_len = 0;
6845 iph->check = 0;
6846 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
6847 iph->daddr, 0,
6848 IPPROTO_TCP,
6849 0);
6850 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
Alexander Duyck244e27a2012-02-08 07:51:11 +00006851 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
6852 IXGBE_TX_FLAGS_CSUM |
6853 IXGBE_TX_FLAGS_IPV4;
Alexander Duyck897ab152011-05-27 05:31:47 +00006854 } else if (skb_is_gso_v6(skb)) {
6855 ipv6_hdr(skb)->payload_len = 0;
6856 tcp_hdr(skb)->check =
6857 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
6858 &ipv6_hdr(skb)->daddr,
6859 0, IPPROTO_TCP, 0);
Alexander Duyck244e27a2012-02-08 07:51:11 +00006860 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
6861 IXGBE_TX_FLAGS_CSUM;
Alexander Duyck897ab152011-05-27 05:31:47 +00006862 }
6863
Alexander Duyck091a6242012-02-08 07:51:01 +00006864 /* compute header lengths */
Alexander Duyck897ab152011-05-27 05:31:47 +00006865 l4len = tcp_hdrlen(skb);
6866 *hdr_len = skb_transport_offset(skb) + l4len;
6867
Alexander Duyck091a6242012-02-08 07:51:01 +00006868 /* update gso size and bytecount with header size */
6869 first->gso_segs = skb_shinfo(skb)->gso_segs;
6870 first->bytecount += (first->gso_segs - 1) * *hdr_len;
6871
Alexander Duyckc44f5f52012-10-30 06:01:45 +00006872 /* mss_l4len_id: use 0 as index for TSO */
Alexander Duyck897ab152011-05-27 05:31:47 +00006873 mss_l4len_idx = l4len << IXGBE_ADVTXD_L4LEN_SHIFT;
6874 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
Alexander Duyck897ab152011-05-27 05:31:47 +00006875
6876 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
6877 vlan_macip_lens = skb_network_header_len(skb);
6878 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
Alexander Duyck244e27a2012-02-08 07:51:11 +00006879 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
Alexander Duyck897ab152011-05-27 05:31:47 +00006880
6881 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd,
Alexander Duyck244e27a2012-02-08 07:51:11 +00006882 mss_l4len_idx);
Alexander Duyck897ab152011-05-27 05:31:47 +00006883
6884 return 1;
Joe Perches7ca647b2010-09-07 21:35:40 +00006885}
6886
Alexander Duyck244e27a2012-02-08 07:51:11 +00006887static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
6888 struct ixgbe_tx_buffer *first)
Auke Kok9a799d72007-09-15 14:07:45 -07006889{
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00006890 struct sk_buff *skb = first->skb;
Alexander Duyck897ab152011-05-27 05:31:47 +00006891 u32 vlan_macip_lens = 0;
6892 u32 mss_l4len_idx = 0;
6893 u32 type_tucmd = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006894
Alexander Duyck897ab152011-05-27 05:31:47 +00006895 if (skb->ip_summed != CHECKSUM_PARTIAL) {
Alexander Duyck472148c2012-11-07 02:34:28 +00006896 if (!(first->tx_flags & IXGBE_TX_FLAGS_HW_VLAN) &&
6897 !(first->tx_flags & IXGBE_TX_FLAGS_CC))
6898 return;
Alexander Duyck897ab152011-05-27 05:31:47 +00006899 } else {
6900 u8 l4_hdr = 0;
Alexander Duyck244e27a2012-02-08 07:51:11 +00006901 switch (first->protocol) {
Joe Perchesa1108ff2014-03-13 05:19:25 +00006902 case htons(ETH_P_IP):
Alexander Duyck897ab152011-05-27 05:31:47 +00006903 vlan_macip_lens |= skb_network_header_len(skb);
6904 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
6905 l4_hdr = ip_hdr(skb)->protocol;
6906 break;
Joe Perchesa1108ff2014-03-13 05:19:25 +00006907 case htons(ETH_P_IPV6):
Alexander Duyck897ab152011-05-27 05:31:47 +00006908 vlan_macip_lens |= skb_network_header_len(skb);
6909 l4_hdr = ipv6_hdr(skb)->nexthdr;
6910 break;
6911 default:
6912 if (unlikely(net_ratelimit())) {
6913 dev_warn(tx_ring->dev,
6914 "partial checksum but proto=%x!\n",
Alexander Duyck244e27a2012-02-08 07:51:11 +00006915 first->protocol);
Alexander Duyck897ab152011-05-27 05:31:47 +00006916 }
6917 break;
6918 }
Auke Kok9a799d72007-09-15 14:07:45 -07006919
Alexander Duyck897ab152011-05-27 05:31:47 +00006920 switch (l4_hdr) {
6921 case IPPROTO_TCP:
6922 type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
6923 mss_l4len_idx = tcp_hdrlen(skb) <<
6924 IXGBE_ADVTXD_L4LEN_SHIFT;
6925 break;
6926 case IPPROTO_SCTP:
6927 type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
6928 mss_l4len_idx = sizeof(struct sctphdr) <<
6929 IXGBE_ADVTXD_L4LEN_SHIFT;
6930 break;
6931 case IPPROTO_UDP:
6932 mss_l4len_idx = sizeof(struct udphdr) <<
6933 IXGBE_ADVTXD_L4LEN_SHIFT;
6934 break;
6935 default:
6936 if (unlikely(net_ratelimit())) {
6937 dev_warn(tx_ring->dev,
6938 "partial checksum but l4 proto=%x!\n",
Alexander Duyck244e27a2012-02-08 07:51:11 +00006939 l4_hdr);
Alexander Duyck897ab152011-05-27 05:31:47 +00006940 }
6941 break;
6942 }
Alexander Duyck244e27a2012-02-08 07:51:11 +00006943
6944 /* update TX checksum flag */
6945 first->tx_flags |= IXGBE_TX_FLAGS_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07006946 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006947
Alexander Duyck244e27a2012-02-08 07:51:11 +00006948 /* vlan_macip_lens: MACLEN, VLAN tag */
Alexander Duyck897ab152011-05-27 05:31:47 +00006949 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
Alexander Duyck244e27a2012-02-08 07:51:11 +00006950 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
Alexander Duyck897ab152011-05-27 05:31:47 +00006951
6952 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0,
6953 type_tucmd, mss_l4len_idx);
Auke Kok9a799d72007-09-15 14:07:45 -07006954}
6955
Alexander Duyck472148c2012-11-07 02:34:28 +00006956#define IXGBE_SET_FLAG(_input, _flag, _result) \
6957 ((_flag <= _result) ? \
6958 ((u32)(_input & _flag) * (_result / _flag)) : \
6959 ((u32)(_input & _flag) / (_flag / _result)))
6960
6961static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
Alexander Duyckd3d00232011-07-15 02:31:25 +00006962{
6963 /* set type for advanced descriptor with frame checksum insertion */
Alexander Duyck472148c2012-11-07 02:34:28 +00006964 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA |
6965 IXGBE_ADVTXD_DCMD_DEXT |
6966 IXGBE_ADVTXD_DCMD_IFCS;
Alexander Duyckd3d00232011-07-15 02:31:25 +00006967
6968 /* set HW vlan bit if vlan is present */
Alexander Duyck472148c2012-11-07 02:34:28 +00006969 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN,
6970 IXGBE_ADVTXD_DCMD_VLE);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00006971
Alexander Duyckd3d00232011-07-15 02:31:25 +00006972 /* set segmentation enable bits for TSO/FSO */
Alexander Duyck472148c2012-11-07 02:34:28 +00006973 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO,
6974 IXGBE_ADVTXD_DCMD_TSE);
6975
6976 /* set timestamp bit if present */
6977 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP,
6978 IXGBE_ADVTXD_MAC_TSTAMP);
Alexander Duyckd3d00232011-07-15 02:31:25 +00006979
Alexander Duyck62748b72012-07-20 08:09:01 +00006980 /* insert frame checksum */
Alexander Duyck472148c2012-11-07 02:34:28 +00006981 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS);
Alexander Duyck62748b72012-07-20 08:09:01 +00006982
Alexander Duyckd3d00232011-07-15 02:31:25 +00006983 return cmd_type;
6984}
6985
Alexander Duyck729739b2012-02-08 07:51:06 +00006986static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc,
6987 u32 tx_flags, unsigned int paylen)
Alexander Duyckd3d00232011-07-15 02:31:25 +00006988{
Alexander Duyck472148c2012-11-07 02:34:28 +00006989 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT;
Alexander Duyckd3d00232011-07-15 02:31:25 +00006990
6991 /* enable L4 checksum for TSO and TX checksum offload */
Alexander Duyck472148c2012-11-07 02:34:28 +00006992 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
6993 IXGBE_TX_FLAGS_CSUM,
6994 IXGBE_ADVTXD_POPTS_TXSM);
Alexander Duyckd3d00232011-07-15 02:31:25 +00006995
Alexander Duyck93f5b3c2012-02-08 07:50:45 +00006996 /* enble IPv4 checksum for TSO */
Alexander Duyck472148c2012-11-07 02:34:28 +00006997 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
6998 IXGBE_TX_FLAGS_IPV4,
6999 IXGBE_ADVTXD_POPTS_IXSM);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007000
Alexander Duyck7f9643f2011-06-29 05:43:27 +00007001 /*
7002 * Check Context must be set if Tx switch is enabled, which it
7003 * always is for case where virtual functions are running
7004 */
Alexander Duyck472148c2012-11-07 02:34:28 +00007005 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7006 IXGBE_TX_FLAGS_CC,
7007 IXGBE_ADVTXD_CC);
Alexander Duyck7f9643f2011-06-29 05:43:27 +00007008
Alexander Duyck472148c2012-11-07 02:34:28 +00007009 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007010}
7011
Daniel Borkmann2367a172014-08-26 19:34:18 +02007012static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7013{
7014 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
7015
7016 /* Herbert's original patch had:
7017 * smp_mb__after_netif_stop_queue();
7018 * but since that doesn't exist yet, just open code it.
7019 */
7020 smp_mb();
7021
7022 /* We need to check again in a case another CPU has just
7023 * made room available.
7024 */
7025 if (likely(ixgbe_desc_unused(tx_ring) < size))
7026 return -EBUSY;
7027
7028 /* A reprieve! - use start_queue because it doesn't call schedule */
7029 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
7030 ++tx_ring->tx_stats.restart_queue;
7031 return 0;
7032}
7033
7034static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7035{
7036 if (likely(ixgbe_desc_unused(tx_ring) >= size))
7037 return 0;
7038
7039 return __ixgbe_maybe_stop_tx(tx_ring, size);
7040}
7041
Alexander Duyckd3d00232011-07-15 02:31:25 +00007042#define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
7043 IXGBE_TXD_CMD_RS)
7044
7045static void ixgbe_tx_map(struct ixgbe_ring *tx_ring,
Alexander Duyckd3d00232011-07-15 02:31:25 +00007046 struct ixgbe_tx_buffer *first,
Alexander Duyckd3d00232011-07-15 02:31:25 +00007047 const u8 hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07007048{
Alexander Duyck729739b2012-02-08 07:51:06 +00007049 struct sk_buff *skb = first->skb;
7050 struct ixgbe_tx_buffer *tx_buffer;
7051 union ixgbe_adv_tx_desc *tx_desc;
Alexander Duyckec718252012-10-30 06:01:55 +00007052 struct skb_frag_struct *frag;
7053 dma_addr_t dma;
7054 unsigned int data_len, size;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007055 u32 tx_flags = first->tx_flags;
Alexander Duyck472148c2012-11-07 02:34:28 +00007056 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007057 u16 i = tx_ring->next_to_use;
Auke Kok9a799d72007-09-15 14:07:45 -07007058
Alexander Duyck729739b2012-02-08 07:51:06 +00007059 tx_desc = IXGBE_TX_DESC(tx_ring, i);
7060
Alexander Duyckec718252012-10-30 06:01:55 +00007061 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len);
7062
7063 size = skb_headlen(skb);
7064 data_len = skb->data_len;
Alexander Duyck729739b2012-02-08 07:51:06 +00007065
Alexander Duyckd3d00232011-07-15 02:31:25 +00007066#ifdef IXGBE_FCOE
7067 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
Alexander Duyck729739b2012-02-08 07:51:06 +00007068 if (data_len < sizeof(struct fcoe_crc_eof)) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00007069 size -= sizeof(struct fcoe_crc_eof) - data_len;
7070 data_len = 0;
Alexander Duyck729739b2012-02-08 07:51:06 +00007071 } else {
7072 data_len -= sizeof(struct fcoe_crc_eof);
Alexander Duyck44df32c2009-03-31 21:34:23 +00007073 }
Auke Kok9a799d72007-09-15 14:07:45 -07007074 }
7075
Alexander Duyckd3d00232011-07-15 02:31:25 +00007076#endif
Alexander Duyck729739b2012-02-08 07:51:06 +00007077 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007078
Alexander Duyckec718252012-10-30 06:01:55 +00007079 tx_buffer = first;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007080
Alexander Duyckec718252012-10-30 06:01:55 +00007081 for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
7082 if (dma_mapping_error(tx_ring->dev, dma))
7083 goto dma_error;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007084
Alexander Duyckec718252012-10-30 06:01:55 +00007085 /* record length, and DMA address */
7086 dma_unmap_len_set(tx_buffer, len, size);
7087 dma_unmap_addr_set(tx_buffer, dma, dma);
7088
7089 tx_desc->read.buffer_addr = cpu_to_le64(dma);
7090
Alexander Duyck729739b2012-02-08 07:51:06 +00007091 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00007092 tx_desc->read.cmd_type_len =
Alexander Duyck472148c2012-11-07 02:34:28 +00007093 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007094
Alexander Duyckd3d00232011-07-15 02:31:25 +00007095 i++;
Alexander Duyck729739b2012-02-08 07:51:06 +00007096 tx_desc++;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007097 if (i == tx_ring->count) {
Alexander Duycke4f74022012-01-31 02:59:44 +00007098 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007099 i = 0;
7100 }
Alexander Duyckec718252012-10-30 06:01:55 +00007101 tx_desc->read.olinfo_status = 0;
Alexander Duyck729739b2012-02-08 07:51:06 +00007102
7103 dma += IXGBE_MAX_DATA_PER_TXD;
7104 size -= IXGBE_MAX_DATA_PER_TXD;
7105
7106 tx_desc->read.buffer_addr = cpu_to_le64(dma);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007107 }
7108
Alexander Duyck729739b2012-02-08 07:51:06 +00007109 if (likely(!data_len))
7110 break;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007111
Alexander Duyck472148c2012-11-07 02:34:28 +00007112 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007113
Alexander Duyck729739b2012-02-08 07:51:06 +00007114 i++;
7115 tx_desc++;
7116 if (i == tx_ring->count) {
7117 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
7118 i = 0;
7119 }
Alexander Duyckec718252012-10-30 06:01:55 +00007120 tx_desc->read.olinfo_status = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07007121
Alexander Duyckd3d00232011-07-15 02:31:25 +00007122#ifdef IXGBE_FCOE
Eric Dumazet9e903e02011-10-18 21:00:24 +00007123 size = min_t(unsigned int, data_len, skb_frag_size(frag));
Alexander Duyckd3d00232011-07-15 02:31:25 +00007124#else
Eric Dumazet9e903e02011-10-18 21:00:24 +00007125 size = skb_frag_size(frag);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007126#endif
7127 data_len -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07007128
Alexander Duyck729739b2012-02-08 07:51:06 +00007129 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
7130 DMA_TO_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07007131
Alexander Duyck729739b2012-02-08 07:51:06 +00007132 tx_buffer = &tx_ring->tx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07007133 }
Alexander Duyck44df32c2009-03-31 21:34:23 +00007134
Alexander Duyck729739b2012-02-08 07:51:06 +00007135 /* write last descriptor with RS and EOP bits */
Alexander Duyck472148c2012-11-07 02:34:28 +00007136 cmd_type |= size | IXGBE_TXD_CMD;
7137 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007138
Alexander Duyck091a6242012-02-08 07:51:01 +00007139 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
Alexander Duyckb2d96e02012-02-07 08:14:33 +00007140
Alexander Duyckd3d00232011-07-15 02:31:25 +00007141 /* set the timestamp */
7142 first->time_stamp = jiffies;
Auke Kok9a799d72007-09-15 14:07:45 -07007143
7144 /*
Alexander Duyck729739b2012-02-08 07:51:06 +00007145 * Force memory writes to complete before letting h/w know there
7146 * are new descriptors to fetch. (Only applicable for weak-ordered
7147 * memory model archs, such as IA-64).
7148 *
7149 * We also need this memory barrier to make certain all of the
7150 * status bits have been updated before next_to_watch is written.
Auke Kok9a799d72007-09-15 14:07:45 -07007151 */
7152 wmb();
7153
Alexander Duyckd3d00232011-07-15 02:31:25 +00007154 /* set next_to_watch value indicating a packet is present */
7155 first->next_to_watch = tx_desc;
7156
Alexander Duyck729739b2012-02-08 07:51:06 +00007157 i++;
7158 if (i == tx_ring->count)
7159 i = 0;
7160
7161 tx_ring->next_to_use = i;
7162
Daniel Borkmann2367a172014-08-26 19:34:18 +02007163 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
7164
7165 if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
Alexander Duyckad435ec2014-11-14 00:56:35 +00007166 writel(i, tx_ring->tail);
7167
7168 /* we need this if more than one processor can write to our tail
7169 * at a time, it synchronizes IO on IA64/Altix systems
7170 */
7171 mmiowb();
Daniel Borkmann9c938cd2014-08-24 15:42:16 +02007172 }
Daniel Borkmann2367a172014-08-26 19:34:18 +02007173
Alexander Duyckd3d00232011-07-15 02:31:25 +00007174 return;
7175dma_error:
Alexander Duyck729739b2012-02-08 07:51:06 +00007176 dev_err(tx_ring->dev, "TX DMA map failed\n");
Alexander Duyckd3d00232011-07-15 02:31:25 +00007177
7178 /* clear dma mappings for failed tx_buffer_info map */
7179 for (;;) {
Alexander Duyck729739b2012-02-08 07:51:06 +00007180 tx_buffer = &tx_ring->tx_buffer_info[i];
7181 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer);
7182 if (tx_buffer == first)
Alexander Duyckd3d00232011-07-15 02:31:25 +00007183 break;
7184 if (i == 0)
7185 i = tx_ring->count;
7186 i--;
7187 }
7188
Alexander Duyckd3d00232011-07-15 02:31:25 +00007189 tx_ring->next_to_use = i;
Auke Kok9a799d72007-09-15 14:07:45 -07007190}
7191
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007192static void ixgbe_atr(struct ixgbe_ring *ring,
Alexander Duyck244e27a2012-02-08 07:51:11 +00007193 struct ixgbe_tx_buffer *first)
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007194{
Alexander Duyck69830522011-01-06 14:29:58 +00007195 struct ixgbe_q_vector *q_vector = ring->q_vector;
7196 union ixgbe_atr_hash_dword input = { .dword = 0 };
7197 union ixgbe_atr_hash_dword common = { .dword = 0 };
7198 union {
7199 unsigned char *network;
7200 struct iphdr *ipv4;
7201 struct ipv6hdr *ipv6;
7202 } hdr;
Alexander Duyckee9e0f02010-11-16 19:27:01 -08007203 struct tcphdr *th;
Alexander Duyck905e4a42011-01-06 14:29:57 +00007204 __be16 vlan_id;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007205
Alexander Duyck69830522011-01-06 14:29:58 +00007206 /* if ring doesn't have a interrupt vector, cannot perform ATR */
7207 if (!q_vector)
Guillaume Gaudonvilled3ead242010-06-29 18:29:00 +00007208 return;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007209
Alexander Duyck69830522011-01-06 14:29:58 +00007210 /* do nothing if sampling is disabled */
7211 if (!ring->atr_sample_rate)
7212 return;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007213
Alexander Duyck69830522011-01-06 14:29:58 +00007214 ring->atr_count++;
7215
7216 /* snag network header to get L4 type and address */
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007217 hdr.network = skb_network_header(first->skb);
Alexander Duyck69830522011-01-06 14:29:58 +00007218
7219 /* Currently only IPv4/IPv6 with TCP is supported */
Joe Perchesa1108ff2014-03-13 05:19:25 +00007220 if ((first->protocol != htons(ETH_P_IPV6) ||
Alexander Duyck69830522011-01-06 14:29:58 +00007221 hdr.ipv6->nexthdr != IPPROTO_TCP) &&
Joe Perchesa1108ff2014-03-13 05:19:25 +00007222 (first->protocol != htons(ETH_P_IP) ||
Alexander Duyck69830522011-01-06 14:29:58 +00007223 hdr.ipv4->protocol != IPPROTO_TCP))
7224 return;
Alexander Duyckee9e0f02010-11-16 19:27:01 -08007225
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007226 th = tcp_hdr(first->skb);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007227
Alexander Duyck66f32a82011-06-29 05:43:22 +00007228 /* skip this packet since it is invalid or the socket is closing */
7229 if (!th || th->fin)
Alexander Duyck69830522011-01-06 14:29:58 +00007230 return;
7231
7232 /* sample on all syn packets or once every atr sample count */
7233 if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
7234 return;
7235
7236 /* reset sample count */
7237 ring->atr_count = 0;
7238
Alexander Duyck244e27a2012-02-08 07:51:11 +00007239 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
Alexander Duyck69830522011-01-06 14:29:58 +00007240
7241 /*
7242 * src and dst are inverted, think how the receiver sees them
7243 *
7244 * The input is broken into two sections, a non-compressed section
7245 * containing vm_pool, vlan_id, and flow_type. The rest of the data
7246 * is XORed together and stored in the compressed dword.
7247 */
7248 input.formatted.vlan_id = vlan_id;
7249
7250 /*
7251 * since src port and flex bytes occupy the same word XOR them together
7252 * and write the value to source port portion of compressed dword
7253 */
Alexander Duyck244e27a2012-02-08 07:51:11 +00007254 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN))
Joe Perchesa1108ff2014-03-13 05:19:25 +00007255 common.port.src ^= th->dest ^ htons(ETH_P_8021Q);
Alexander Duyck69830522011-01-06 14:29:58 +00007256 else
Alexander Duyck244e27a2012-02-08 07:51:11 +00007257 common.port.src ^= th->dest ^ first->protocol;
Alexander Duyck69830522011-01-06 14:29:58 +00007258 common.port.dst ^= th->source;
7259
Joe Perchesa1108ff2014-03-13 05:19:25 +00007260 if (first->protocol == htons(ETH_P_IP)) {
Alexander Duyck69830522011-01-06 14:29:58 +00007261 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
7262 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
7263 } else {
7264 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
7265 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
7266 hdr.ipv6->saddr.s6_addr32[1] ^
7267 hdr.ipv6->saddr.s6_addr32[2] ^
7268 hdr.ipv6->saddr.s6_addr32[3] ^
7269 hdr.ipv6->daddr.s6_addr32[0] ^
7270 hdr.ipv6->daddr.s6_addr32[1] ^
7271 hdr.ipv6->daddr.s6_addr32[2] ^
7272 hdr.ipv6->daddr.s6_addr32[3];
7273 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007274
7275 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
Alexander Duyck69830522011-01-06 14:29:58 +00007276 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
7277 input, common, ring->queue_index);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007278}
7279
Jason Wangf663dd92014-01-10 16:18:26 +08007280static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
Daniel Borkmann99932d42014-02-16 15:55:20 +01007281 void *accel_priv, select_queue_fallback_t fallback)
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07007282{
Jason Wangf663dd92014-01-10 16:18:26 +08007283 struct ixgbe_fwd_adapter *fwd_adapter = accel_priv;
7284#ifdef IXGBE_FCOE
Alexander Duyck97488bd2013-01-12 06:33:37 +00007285 struct ixgbe_adapter *adapter;
7286 struct ixgbe_ring_feature *f;
7287 int txq;
Jason Wangf663dd92014-01-10 16:18:26 +08007288#endif
7289
7290 if (fwd_adapter)
7291 return skb->queue_mapping + fwd_adapter->tx_base_queue;
7292
7293#ifdef IXGBE_FCOE
Hao Zheng5e09a102010-11-11 13:47:59 +00007294
Alexander Duyck97488bd2013-01-12 06:33:37 +00007295 /*
7296 * only execute the code below if protocol is FCoE
7297 * or FIP and we have FCoE enabled on the adapter
7298 */
7299 switch (vlan_get_protocol(skb)) {
Joe Perchesa1108ff2014-03-13 05:19:25 +00007300 case htons(ETH_P_FCOE):
7301 case htons(ETH_P_FIP):
Alexander Duyck97488bd2013-01-12 06:33:37 +00007302 adapter = netdev_priv(dev);
Alexander Duyckc0876632012-05-10 00:01:46 +00007303
Alexander Duyck97488bd2013-01-12 06:33:37 +00007304 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7305 break;
7306 default:
Daniel Borkmann99932d42014-02-16 15:55:20 +01007307 return fallback(dev, skb);
Krishna Kumarfdd3d632010-02-03 13:13:10 +00007308 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007309
Alexander Duyck97488bd2013-01-12 06:33:37 +00007310 f = &adapter->ring_feature[RING_F_FCOE];
7311
7312 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) :
7313 smp_processor_id();
7314
7315 while (txq >= f->indices)
7316 txq -= f->indices;
7317
7318 return txq + f->offset;
Jason Wangf663dd92014-01-10 16:18:26 +08007319#else
Daniel Borkmann99932d42014-02-16 15:55:20 +01007320 return fallback(dev, skb);
Jason Wangf663dd92014-01-10 16:18:26 +08007321#endif
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07007322}
7323
Alexander Duyckfc77dc32010-11-16 19:26:51 -08007324netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
Alexander Duyck84418e32010-08-19 13:40:54 +00007325 struct ixgbe_adapter *adapter,
7326 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07007327{
Alexander Duyckd3d00232011-07-15 02:31:25 +00007328 struct ixgbe_tx_buffer *first;
Yi Zou5f715822009-12-03 11:32:44 +00007329 int tso;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007330 u32 tx_flags = 0;
Alexander Duycka535c302011-05-27 05:31:52 +00007331 unsigned short f;
Alexander Duycka535c302011-05-27 05:31:52 +00007332 u16 count = TXD_USE_COUNT(skb_headlen(skb));
Alexander Duyck66f32a82011-06-29 05:43:22 +00007333 __be16 protocol = skb->protocol;
Alexander Duyck63544e92011-05-27 05:31:42 +00007334 u8 hdr_len = 0;
Hao Zheng5e09a102010-11-11 13:47:59 +00007335
Alexander Duycka535c302011-05-27 05:31:52 +00007336 /*
7337 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
Alexander Duyck24ddd962012-02-10 02:08:32 +00007338 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
Alexander Duycka535c302011-05-27 05:31:52 +00007339 * + 2 desc gap to keep tail from touching head,
7340 * + 1 desc for context descriptor,
7341 * otherwise try next time
7342 */
Alexander Duycka535c302011-05-27 05:31:52 +00007343 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
7344 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
Alexander Duyck7f661622013-02-09 01:19:55 +00007345
Alexander Duycka535c302011-05-27 05:31:52 +00007346 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) {
7347 tx_ring->tx_stats.tx_busy++;
7348 return NETDEV_TX_BUSY;
7349 }
7350
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007351 /* record the location of the first descriptor for this packet */
7352 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
7353 first->skb = skb;
Alexander Duyck091a6242012-02-08 07:51:01 +00007354 first->bytecount = skb->len;
7355 first->gso_segs = 1;
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007356
Alexander Duyck66f32a82011-06-29 05:43:22 +00007357 /* if we have a HW VLAN tag being added default to the HW one */
Jiri Pirkodf8a39d2015-01-13 17:13:44 +01007358 if (skb_vlan_tag_present(skb)) {
7359 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00007360 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
7361 /* else if it is a SW VLAN check the next protocol and store the tag */
Joe Perchesa1108ff2014-03-13 05:19:25 +00007362 } else if (protocol == htons(ETH_P_8021Q)) {
Alexander Duyck66f32a82011-06-29 05:43:22 +00007363 struct vlan_hdr *vhdr, _vhdr;
7364 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr);
7365 if (!vhdr)
7366 goto out_drop;
7367
Alexander Duyck9e0c5642012-02-08 07:49:33 +00007368 tx_flags |= ntohs(vhdr->h_vlan_TCI) <<
7369 IXGBE_TX_FLAGS_VLAN_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00007370 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN;
Auke Kok9a799d72007-09-15 14:07:45 -07007371 }
Toshiaki Makita02136682015-01-29 20:37:09 +09007372 protocol = vlan_get_protocol(skb);
Yi Zoueacd73f2009-05-13 13:11:06 +00007373
Mark Rustadd5234932014-08-09 07:02:09 +00007374 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
7375 adapter->ptp_clock &&
7376 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,
7377 &adapter->state)) {
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007378 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
7379 tx_flags |= IXGBE_TX_FLAGS_TSTAMP;
Jacob Keller891dc082012-12-05 07:24:46 +00007380
7381 /* schedule check for Tx timestamp */
7382 adapter->ptp_tx_skb = skb_get(skb);
7383 adapter->ptp_tx_start = jiffies;
7384 schedule_work(&adapter->ptp_tx_work);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007385 }
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007386
Jakub Kicinskiff29a862014-03-15 14:55:16 +00007387 skb_tx_timestamp(skb);
7388
Alexander Duyck9e0c5642012-02-08 07:49:33 +00007389#ifdef CONFIG_PCI_IOV
7390 /*
7391 * Use the l2switch_enable flag - would be false if the DMA
7392 * Tx switch had been disabled.
7393 */
7394 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
Alexander Duyck472148c2012-11-07 02:34:28 +00007395 tx_flags |= IXGBE_TX_FLAGS_CC;
Alexander Duyck9e0c5642012-02-08 07:49:33 +00007396
7397#endif
John Fastabend32701dc2011-09-27 03:51:56 +00007398 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
Alexander Duyck66f32a82011-06-29 05:43:22 +00007399 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
Alexander Duyck09dca472011-07-20 00:09:10 +00007400 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) ||
7401 (skb->priority != TC_PRIO_CONTROL))) {
Alexander Duyck66f32a82011-06-29 05:43:22 +00007402 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
John Fastabend32701dc2011-09-27 03:51:56 +00007403 tx_flags |= (skb->priority & 0x7) <<
7404 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00007405 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) {
7406 struct vlan_ethhdr *vhdr;
Francois Romieu2049e1f2014-03-30 03:14:27 +00007407
7408 if (skb_cow_head(skb, 0))
Alexander Duyck66f32a82011-06-29 05:43:22 +00007409 goto out_drop;
7410 vhdr = (struct vlan_ethhdr *)skb->data;
7411 vhdr->h_vlan_TCI = htons(tx_flags >>
7412 IXGBE_TX_FLAGS_VLAN_SHIFT);
7413 } else {
7414 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
7415 }
7416 }
Alexander Duycka535c302011-05-27 05:31:52 +00007417
Alexander Duyck244e27a2012-02-08 07:51:11 +00007418 /* record initial flags and protocol */
7419 first->tx_flags = tx_flags;
7420 first->protocol = protocol;
7421
Yi Zoueacd73f2009-05-13 13:11:06 +00007422#ifdef IXGBE_FCOE
Alexander Duyck66f32a82011-06-29 05:43:22 +00007423 /* setup tx offload for FCoE */
Joe Perchesa1108ff2014-03-13 05:19:25 +00007424 if ((protocol == htons(ETH_P_FCOE)) &&
Alexander Duycka58915c2012-05-25 06:38:18 +00007425 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) {
Alexander Duyck244e27a2012-02-08 07:51:11 +00007426 tso = ixgbe_fso(tx_ring, first, &hdr_len);
Alexander Duyck897ab152011-05-27 05:31:47 +00007427 if (tso < 0)
7428 goto out_drop;
Auke Kok9a799d72007-09-15 14:07:45 -07007429
Alexander Duyck66f32a82011-06-29 05:43:22 +00007430 goto xmit_fcoe;
Alexander Duyck44df32c2009-03-31 21:34:23 +00007431 }
Auke Kok9a799d72007-09-15 14:07:45 -07007432
Auke Kok9a799d72007-09-15 14:07:45 -07007433#endif /* IXGBE_FCOE */
Alexander Duyck244e27a2012-02-08 07:51:11 +00007434 tso = ixgbe_tso(tx_ring, first, &hdr_len);
Alexander Duyck66f32a82011-06-29 05:43:22 +00007435 if (tso < 0)
Auke Kok9a799d72007-09-15 14:07:45 -07007436 goto out_drop;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007437 else if (!tso)
7438 ixgbe_tx_csum(tx_ring, first);
Alexander Duyck66f32a82011-06-29 05:43:22 +00007439
7440 /* add the ATR filter if ATR is on */
7441 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
Alexander Duyck244e27a2012-02-08 07:51:11 +00007442 ixgbe_atr(tx_ring, first);
Alexander Duyck66f32a82011-06-29 05:43:22 +00007443
7444#ifdef IXGBE_FCOE
7445xmit_fcoe:
7446#endif /* IXGBE_FCOE */
Alexander Duyck244e27a2012-02-08 07:51:11 +00007447 ixgbe_tx_map(tx_ring, first, hdr_len);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007448
Auke Kok9a799d72007-09-15 14:07:45 -07007449 return NETDEV_TX_OK;
Alexander Duyck897ab152011-05-27 05:31:47 +00007450
7451out_drop:
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007452 dev_kfree_skb_any(first->skb);
7453 first->skb = NULL;
7454
Alexander Duyck897ab152011-05-27 05:31:47 +00007455 return NETDEV_TX_OK;
Auke Kok9a799d72007-09-15 14:07:45 -07007456}
7457
John Fastabend2a47fa42013-11-06 09:54:52 -08007458static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb,
7459 struct net_device *netdev,
7460 struct ixgbe_ring *ring)
Auke Kok9a799d72007-09-15 14:07:45 -07007461{
7462 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07007463 struct ixgbe_ring *tx_ring;
Auke Kok9a799d72007-09-15 14:07:45 -07007464
Alexander Duycka50c29d2012-02-08 07:50:40 +00007465 /*
7466 * The minimum packet size for olinfo paylen is 17 so pad the skb
7467 * in order to meet this minimum size requirement.
7468 */
Alexander Duycka94d9e22014-12-03 08:17:39 -08007469 if (skb_put_padto(skb, 17))
7470 return NETDEV_TX_OK;
Alexander Duycka50c29d2012-02-08 07:50:40 +00007471
John Fastabend2a47fa42013-11-06 09:54:52 -08007472 tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping];
7473
Auke Kok9a799d72007-09-15 14:07:45 -07007474 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
7475}
7476
John Fastabend2a47fa42013-11-06 09:54:52 -08007477static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
7478 struct net_device *netdev)
7479{
7480 return __ixgbe_xmit_frame(skb, netdev, NULL);
7481}
7482
Auke Kok9a799d72007-09-15 14:07:45 -07007483/**
7484 * ixgbe_set_mac - Change the Ethernet Address of the NIC
7485 * @netdev: network interface device structure
7486 * @p: pointer to an address structure
7487 *
7488 * Returns 0 on success, negative on failure
7489 **/
7490static int ixgbe_set_mac(struct net_device *netdev, void *p)
7491{
7492 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7493 struct ixgbe_hw *hw = &adapter->hw;
7494 struct sockaddr *addr = p;
Jacob Keller5d7daa32014-03-29 06:51:25 +00007495 int ret;
Auke Kok9a799d72007-09-15 14:07:45 -07007496
7497 if (!is_valid_ether_addr(addr->sa_data))
7498 return -EADDRNOTAVAIL;
7499
Jacob Keller5d7daa32014-03-29 06:51:25 +00007500 ixgbe_del_mac_filter(adapter, hw->mac.addr, VMDQ_P(0));
Auke Kok9a799d72007-09-15 14:07:45 -07007501 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07007502 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07007503
Jacob Keller5d7daa32014-03-29 06:51:25 +00007504 ret = ixgbe_add_mac_filter(adapter, hw->mac.addr, VMDQ_P(0));
7505 return ret > 0 ? 0 : ret;
Auke Kok9a799d72007-09-15 14:07:45 -07007506}
7507
Ben Hutchings6b73e102009-04-29 08:08:58 +00007508static int
7509ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
7510{
7511 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7512 struct ixgbe_hw *hw = &adapter->hw;
7513 u16 value;
7514 int rc;
7515
7516 if (prtad != hw->phy.mdio.prtad)
7517 return -EINVAL;
7518 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
7519 if (!rc)
7520 rc = value;
7521 return rc;
7522}
7523
7524static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
7525 u16 addr, u16 value)
7526{
7527 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7528 struct ixgbe_hw *hw = &adapter->hw;
7529
7530 if (prtad != hw->phy.mdio.prtad)
7531 return -EINVAL;
7532 return hw->phy.ops.write_reg(hw, addr, devad, value);
7533}
7534
7535static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
7536{
7537 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7538
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007539 switch (cmd) {
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007540 case SIOCSHWTSTAMP:
Jacob Keller93501d42014-02-28 15:48:58 -08007541 return ixgbe_ptp_set_ts_config(adapter, req);
7542 case SIOCGHWTSTAMP:
7543 return ixgbe_ptp_get_ts_config(adapter, req);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007544 default:
7545 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
7546 }
Ben Hutchings6b73e102009-04-29 08:08:58 +00007547}
7548
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007549/**
7550 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00007551 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007552 * @netdev: network interface device structure
7553 *
7554 * Returns non-zero on failure
7555 **/
7556static int ixgbe_add_sanmac_netdev(struct net_device *dev)
7557{
7558 int err = 0;
7559 struct ixgbe_adapter *adapter = netdev_priv(dev);
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00007560 struct ixgbe_hw *hw = &adapter->hw;
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007561
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00007562 if (is_valid_ether_addr(hw->mac.san_addr)) {
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007563 rtnl_lock();
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00007564 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN);
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007565 rtnl_unlock();
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00007566
7567 /* update SAN MAC vmdq pool selection */
7568 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007569 }
7570 return err;
7571}
7572
7573/**
7574 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00007575 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007576 * @netdev: network interface device structure
7577 *
7578 * Returns non-zero on failure
7579 **/
7580static int ixgbe_del_sanmac_netdev(struct net_device *dev)
7581{
7582 int err = 0;
7583 struct ixgbe_adapter *adapter = netdev_priv(dev);
7584 struct ixgbe_mac_info *mac = &adapter->hw.mac;
7585
7586 if (is_valid_ether_addr(mac->san_addr)) {
7587 rtnl_lock();
7588 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
7589 rtnl_unlock();
7590 }
7591 return err;
7592}
7593
Auke Kok9a799d72007-09-15 14:07:45 -07007594#ifdef CONFIG_NET_POLL_CONTROLLER
7595/*
7596 * Polling 'interrupt' - used by things like netconsole to send skbs
7597 * without having to re-enable interrupts. It's not called while
7598 * the interrupt routine is executing.
7599 */
7600static void ixgbe_netpoll(struct net_device *netdev)
7601{
7602 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00007603 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07007604
Alexander Duyck1a647bd2010-01-13 01:49:13 +00007605 /* if interface is down do nothing */
7606 if (test_bit(__IXGBE_DOWN, &adapter->state))
7607 return;
7608
Alexander Duyck856f6062015-02-25 17:45:54 +00007609 /* loop through and schedule all active queues */
7610 for (i = 0; i < adapter->num_q_vectors; i++)
7611 ixgbe_msix_clean_rings(0, adapter->q_vector[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07007612}
Auke Kok9a799d72007-09-15 14:07:45 -07007613
Alexander Duyck581330b2012-02-08 07:51:47 +00007614#endif
Eric Dumazetde1036b2010-10-20 23:00:04 +00007615static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
7616 struct rtnl_link_stats64 *stats)
7617{
7618 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7619 int i;
7620
Eric Dumazet1a515022010-11-16 19:26:42 -08007621 rcu_read_lock();
Eric Dumazetde1036b2010-10-20 23:00:04 +00007622 for (i = 0; i < adapter->num_rx_queues; i++) {
Eric Dumazet1a515022010-11-16 19:26:42 -08007623 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
Eric Dumazetde1036b2010-10-20 23:00:04 +00007624 u64 bytes, packets;
7625 unsigned int start;
7626
Eric Dumazet1a515022010-11-16 19:26:42 -08007627 if (ring) {
7628 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07007629 start = u64_stats_fetch_begin_irq(&ring->syncp);
Eric Dumazet1a515022010-11-16 19:26:42 -08007630 packets = ring->stats.packets;
7631 bytes = ring->stats.bytes;
Eric W. Biederman57a77442014-03-13 21:26:42 -07007632 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
Eric Dumazet1a515022010-11-16 19:26:42 -08007633 stats->rx_packets += packets;
7634 stats->rx_bytes += bytes;
7635 }
Eric Dumazetde1036b2010-10-20 23:00:04 +00007636 }
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00007637
7638 for (i = 0; i < adapter->num_tx_queues; i++) {
7639 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]);
7640 u64 bytes, packets;
7641 unsigned int start;
7642
7643 if (ring) {
7644 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07007645 start = u64_stats_fetch_begin_irq(&ring->syncp);
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00007646 packets = ring->stats.packets;
7647 bytes = ring->stats.bytes;
Eric W. Biederman57a77442014-03-13 21:26:42 -07007648 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00007649 stats->tx_packets += packets;
7650 stats->tx_bytes += bytes;
7651 }
7652 }
Eric Dumazet1a515022010-11-16 19:26:42 -08007653 rcu_read_unlock();
Eric Dumazetde1036b2010-10-20 23:00:04 +00007654 /* following stats updated by ixgbe_watchdog_task() */
7655 stats->multicast = netdev->stats.multicast;
7656 stats->rx_errors = netdev->stats.rx_errors;
7657 stats->rx_length_errors = netdev->stats.rx_length_errors;
7658 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
7659 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
7660 return stats;
7661}
7662
Jeff Kirsher8af3c332012-02-18 07:08:14 +00007663#ifdef CONFIG_IXGBE_DCB
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007664/**
7665 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
7666 * @adapter: pointer to ixgbe_adapter
John Fastabend8b1c0b22011-05-03 02:26:48 +00007667 * @tc: number of traffic classes currently enabled
7668 *
7669 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
7670 * 802.1Q priority maps to a packet buffer that exists.
7671 */
7672static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
7673{
7674 struct ixgbe_hw *hw = &adapter->hw;
7675 u32 reg, rsave;
7676 int i;
7677
7678 /* 82598 have a static priority to TC mapping that can not
7679 * be changed so no validation is needed.
7680 */
7681 if (hw->mac.type == ixgbe_mac_82598EB)
7682 return;
7683
7684 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
7685 rsave = reg;
7686
7687 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
7688 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);
7689
7690 /* If up2tc is out of bounds default to zero */
7691 if (up2tc > tc)
7692 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);
7693 }
7694
7695 if (reg != rsave)
7696 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
7697
7698 return;
7699}
7700
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007701/**
Alexander Duyck02debdc2012-05-18 06:33:31 +00007702 * ixgbe_set_prio_tc_map - Configure netdev prio tc map
7703 * @adapter: Pointer to adapter struct
7704 *
7705 * Populate the netdev user priority to tc map
7706 */
7707static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter)
7708{
7709 struct net_device *dev = adapter->netdev;
7710 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
7711 struct ieee_ets *ets = adapter->ixgbe_ieee_ets;
7712 u8 prio;
7713
7714 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) {
7715 u8 tc = 0;
7716
7717 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)
7718 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio);
7719 else if (ets)
7720 tc = ets->prio_tc[prio];
7721
7722 netdev_set_prio_tc_map(dev, prio, tc);
7723 }
7724}
7725
Alexander Duyckcca73c52013-01-12 06:33:44 +00007726#endif /* CONFIG_IXGBE_DCB */
Alexander Duyck02debdc2012-05-18 06:33:31 +00007727/**
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007728 * ixgbe_setup_tc - configure net_device for multiple traffic classes
John Fastabend8b1c0b22011-05-03 02:26:48 +00007729 *
7730 * @netdev: net device to configure
7731 * @tc: number of traffic classes to enable
7732 */
7733int ixgbe_setup_tc(struct net_device *dev, u8 tc)
7734{
John Fastabend8b1c0b22011-05-03 02:26:48 +00007735 struct ixgbe_adapter *adapter = netdev_priv(dev);
7736 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend2a47fa42013-11-06 09:54:52 -08007737 bool pools;
John Fastabend8b1c0b22011-05-03 02:26:48 +00007738
John Fastabend8b1c0b22011-05-03 02:26:48 +00007739 /* Hardware supports up to 8 traffic classes */
John Fastabend4de2a022011-09-27 03:52:01 +00007740 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs ||
Alexander Duyck581330b2012-02-08 07:51:47 +00007741 (hw->mac.type == ixgbe_mac_82598EB &&
7742 tc < MAX_TRAFFIC_CLASS))
John Fastabend8b1c0b22011-05-03 02:26:48 +00007743 return -EINVAL;
7744
John Fastabend2a47fa42013-11-06 09:54:52 -08007745 pools = (find_first_zero_bit(&adapter->fwd_bitmask, 32) > 1);
7746 if (tc && pools && adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS)
7747 return -EBUSY;
7748
John Fastabend8b1c0b22011-05-03 02:26:48 +00007749 /* Hardware has to reinitialize queues and interrupts to
Stephen Hemminger52f33af2011-12-22 16:34:52 +00007750 * match packet buffer alignment. Unfortunately, the
John Fastabend8b1c0b22011-05-03 02:26:48 +00007751 * hardware is not flexible enough to do this dynamically.
7752 */
7753 if (netif_running(dev))
7754 ixgbe_close(dev);
7755 ixgbe_clear_interrupt_scheme(adapter);
7756
Alexander Duyckcca73c52013-01-12 06:33:44 +00007757#ifdef CONFIG_IXGBE_DCB
John Fastabende7589ea2011-07-18 22:38:36 +00007758 if (tc) {
John Fastabend8b1c0b22011-05-03 02:26:48 +00007759 netdev_set_num_tc(dev, tc);
Alexander Duyck02debdc2012-05-18 06:33:31 +00007760 ixgbe_set_prio_tc_map(adapter);
7761
John Fastabende7589ea2011-07-18 22:38:36 +00007762 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
John Fastabende7589ea2011-07-18 22:38:36 +00007763
Alexander Duyck943561d2012-05-09 22:14:44 -07007764 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
7765 adapter->last_lfc_mode = adapter->hw.fc.requested_mode;
John Fastabende7589ea2011-07-18 22:38:36 +00007766 adapter->hw.fc.requested_mode = ixgbe_fc_none;
Alexander Duyck943561d2012-05-09 22:14:44 -07007767 }
John Fastabende7589ea2011-07-18 22:38:36 +00007768 } else {
John Fastabend8b1c0b22011-05-03 02:26:48 +00007769 netdev_reset_tc(dev);
Alexander Duyck02debdc2012-05-18 06:33:31 +00007770
Alexander Duyck943561d2012-05-09 22:14:44 -07007771 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
7772 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
John Fastabende7589ea2011-07-18 22:38:36 +00007773
7774 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
John Fastabende7589ea2011-07-18 22:38:36 +00007775
7776 adapter->temp_dcb_cfg.pfc_mode_enable = false;
7777 adapter->dcb_cfg.pfc_mode_enable = false;
7778 }
7779
John Fastabend8b1c0b22011-05-03 02:26:48 +00007780 ixgbe_validate_rtr(adapter, tc);
Alexander Duyckcca73c52013-01-12 06:33:44 +00007781
7782#endif /* CONFIG_IXGBE_DCB */
7783 ixgbe_init_interrupt_scheme(adapter);
7784
John Fastabend8b1c0b22011-05-03 02:26:48 +00007785 if (netif_running(dev))
Alexander Duyckcca73c52013-01-12 06:33:44 +00007786 return ixgbe_open(dev);
John Fastabend8b1c0b22011-05-03 02:26:48 +00007787
7788 return 0;
7789}
Eric Dumazetde1036b2010-10-20 23:00:04 +00007790
Greg Roseda36b642012-12-11 08:26:43 +00007791#ifdef CONFIG_PCI_IOV
7792void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter)
7793{
7794 struct net_device *netdev = adapter->netdev;
7795
7796 rtnl_lock();
Greg Roseda36b642012-12-11 08:26:43 +00007797 ixgbe_setup_tc(netdev, netdev_get_num_tc(netdev));
Greg Roseda36b642012-12-11 08:26:43 +00007798 rtnl_unlock();
7799}
7800
7801#endif
Don Skidmore082757a2011-07-21 05:55:00 +00007802void ixgbe_do_reset(struct net_device *netdev)
7803{
7804 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7805
7806 if (netif_running(netdev))
7807 ixgbe_reinit_locked(adapter);
7808 else
7809 ixgbe_reset(adapter);
7810}
7811
Michał Mirosławc8f44af2011-11-15 15:29:55 +00007812static netdev_features_t ixgbe_fix_features(struct net_device *netdev,
Alexander Duyck567d2de2012-02-11 07:18:57 +00007813 netdev_features_t features)
Don Skidmore082757a2011-07-21 05:55:00 +00007814{
7815 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7816
Don Skidmore082757a2011-07-21 05:55:00 +00007817 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
Alexander Duyck567d2de2012-02-11 07:18:57 +00007818 if (!(features & NETIF_F_RXCSUM))
7819 features &= ~NETIF_F_LRO;
Don Skidmore082757a2011-07-21 05:55:00 +00007820
Alexander Duyck567d2de2012-02-11 07:18:57 +00007821 /* Turn off LRO if not RSC capable */
7822 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE))
7823 features &= ~NETIF_F_LRO;
Jacob Keller8e2813f2012-04-21 06:05:40 +00007824
Alexander Duyck567d2de2012-02-11 07:18:57 +00007825 return features;
Don Skidmore082757a2011-07-21 05:55:00 +00007826}
7827
Michał Mirosławc8f44af2011-11-15 15:29:55 +00007828static int ixgbe_set_features(struct net_device *netdev,
Alexander Duyck567d2de2012-02-11 07:18:57 +00007829 netdev_features_t features)
Don Skidmore082757a2011-07-21 05:55:00 +00007830{
7831 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Alexander Duyck567d2de2012-02-11 07:18:57 +00007832 netdev_features_t changed = netdev->features ^ features;
Don Skidmore082757a2011-07-21 05:55:00 +00007833 bool need_reset = false;
7834
Don Skidmore082757a2011-07-21 05:55:00 +00007835 /* Make sure RSC matches LRO, reset if change */
Alexander Duyck567d2de2012-02-11 07:18:57 +00007836 if (!(features & NETIF_F_LRO)) {
7837 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Don Skidmore082757a2011-07-21 05:55:00 +00007838 need_reset = true;
Alexander Duyck567d2de2012-02-11 07:18:57 +00007839 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
7840 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) &&
7841 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
7842 if (adapter->rx_itr_setting == 1 ||
7843 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) {
7844 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
7845 need_reset = true;
7846 } else if ((changed ^ features) & NETIF_F_LRO) {
7847 e_info(probe, "rx-usecs set too low, "
7848 "disabling RSC\n");
Don Skidmore082757a2011-07-21 05:55:00 +00007849 }
7850 }
7851
7852 /*
7853 * Check if Flow Director n-tuple support was enabled or disabled. If
7854 * the state changed, we need to reset.
7855 */
Alexander Duyck39cb6812012-06-06 05:38:20 +00007856 switch (features & NETIF_F_NTUPLE) {
7857 case NETIF_F_NTUPLE:
Alexander Duyck567d2de2012-02-11 07:18:57 +00007858 /* turn off ATR, enable perfect filters and reset */
Alexander Duyck39cb6812012-06-06 05:38:20 +00007859 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
7860 need_reset = true;
7861
Alexander Duyck567d2de2012-02-11 07:18:57 +00007862 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
7863 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
Alexander Duyck39cb6812012-06-06 05:38:20 +00007864 break;
7865 default:
7866 /* turn off perfect filters, enable ATR and reset */
7867 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7868 need_reset = true;
7869
7870 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
7871
7872 /* We cannot enable ATR if SR-IOV is enabled */
7873 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7874 break;
7875
7876 /* We cannot enable ATR if we have 2 or more traffic classes */
7877 if (netdev_get_num_tc(netdev) > 1)
7878 break;
7879
7880 /* We cannot enable ATR if RSS is disabled */
7881 if (adapter->ring_feature[RING_F_RSS].limit <= 1)
7882 break;
7883
7884 /* A sample rate of 0 indicates ATR disabled */
7885 if (!adapter->atr_sample_rate)
7886 break;
7887
7888 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
7889 break;
Don Skidmore082757a2011-07-21 05:55:00 +00007890 }
7891
Patrick McHardyf6469682013-04-19 02:04:27 +00007892 if (features & NETIF_F_HW_VLAN_CTAG_RX)
John Fastabend146d4cc2012-05-15 05:59:26 +00007893 ixgbe_vlan_strip_enable(adapter);
7894 else
7895 ixgbe_vlan_strip_disable(adapter);
7896
Ben Greear3f2d1c02012-03-08 08:28:41 +00007897 if (changed & NETIF_F_RXALL)
7898 need_reset = true;
7899
Alexander Duyck567d2de2012-02-11 07:18:57 +00007900 netdev->features = features;
Don Skidmore082757a2011-07-21 05:55:00 +00007901 if (need_reset)
7902 ixgbe_do_reset(netdev);
7903
7904 return 0;
Don Skidmore082757a2011-07-21 05:55:00 +00007905}
7906
Don Skidmore3f207802014-12-23 07:40:34 +00007907/**
7908 * ixgbe_add_vxlan_port - Get notifications about VXLAN ports that come up
7909 * @dev: The port's netdev
7910 * @sa_family: Socket Family that VXLAN is notifiying us about
7911 * @port: New UDP port number that VXLAN started listening to
7912 **/
7913static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
7914 __be16 port)
7915{
7916 struct ixgbe_adapter *adapter = netdev_priv(dev);
7917 struct ixgbe_hw *hw = &adapter->hw;
7918 u16 new_port = ntohs(port);
7919
7920 if (sa_family == AF_INET6)
7921 return;
7922
7923 if (adapter->vxlan_port == new_port) {
7924 netdev_info(dev, "Port %d already offloaded\n", new_port);
7925 return;
7926 }
7927
7928 if (adapter->vxlan_port) {
7929 netdev_info(dev,
7930 "Hit Max num of UDP ports, not adding port %d\n",
7931 new_port);
7932 return;
7933 }
7934
7935 adapter->vxlan_port = new_port;
7936 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, new_port);
7937}
7938
7939/**
7940 * ixgbe_del_vxlan_port - Get notifications about VXLAN ports that go away
7941 * @dev: The port's netdev
7942 * @sa_family: Socket Family that VXLAN is notifying us about
7943 * @port: UDP port number that VXLAN stopped listening to
7944 **/
7945static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
7946 __be16 port)
7947{
7948 struct ixgbe_adapter *adapter = netdev_priv(dev);
7949 struct ixgbe_hw *hw = &adapter->hw;
7950 u16 new_port = ntohs(port);
7951
7952 if (sa_family == AF_INET6)
7953 return;
7954
7955 if (adapter->vxlan_port != new_port) {
7956 netdev_info(dev, "Port %d was not found, not deleting\n",
7957 new_port);
7958 return;
7959 }
7960
7961 adapter->vxlan_port = 0;
7962 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 0);
7963}
7964
stephen hemmingeredc7d572012-10-01 12:32:33 +00007965static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
John Fastabend0f4b0ad2012-04-15 06:44:19 +00007966 struct net_device *dev,
Jiri Pirkof6f64242014-11-28 14:34:15 +01007967 const unsigned char *addr, u16 vid,
John Fastabend0f4b0ad2012-04-15 06:44:19 +00007968 u16 flags)
7969{
Alexander Duyckbcfd3432014-07-17 02:11:22 +00007970 /* guarantee we can provide a unique filter for the unicast address */
Ben Hutchings46acc462012-11-01 09:11:11 +00007971 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
Alexander Duyckbcfd3432014-07-17 02:11:22 +00007972 if (IXGBE_MAX_PF_MACVLANS <= netdev_uc_count(dev))
7973 return -ENOMEM;
John Fastabend0f4b0ad2012-04-15 06:44:19 +00007974 }
7975
Jiri Pirkof6f64242014-11-28 14:34:15 +01007976 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags);
John Fastabend0f4b0ad2012-04-15 06:44:19 +00007977}
7978
Don Skidmore219efe92015-04-09 22:03:22 -07007979/**
7980 * ixgbe_configure_bridge_mode - set various bridge modes
7981 * @adapter - the private structure
7982 * @mode - requested bridge mode
7983 *
7984 * Configure some settings require for various bridge modes.
7985 **/
7986static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter,
7987 __u16 mode)
7988{
Don Skidmore6d4c96a2015-04-09 22:03:23 -07007989 struct ixgbe_hw *hw = &adapter->hw;
7990 unsigned int p, num_pools;
7991 u32 vmdctl;
7992
Don Skidmore219efe92015-04-09 22:03:22 -07007993 switch (mode) {
7994 case BRIDGE_MODE_VEPA:
Don Skidmore6d4c96a2015-04-09 22:03:23 -07007995 /* disable Tx loopback, rely on switch hairpin mode */
Don Skidmore219efe92015-04-09 22:03:22 -07007996 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0);
Don Skidmore6d4c96a2015-04-09 22:03:23 -07007997
7998 /* must enable Rx switching replication to allow multicast
7999 * packet reception on all VFs, and to enable source address
8000 * pruning.
8001 */
8002 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
8003 vmdctl |= IXGBE_VT_CTL_REPLEN;
8004 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
8005
8006 /* enable Rx source address pruning. Note, this requires
8007 * replication to be enabled or else it does nothing.
8008 */
8009 num_pools = adapter->num_vfs + adapter->num_rx_pools;
8010 for (p = 0; p < num_pools; p++) {
8011 if (hw->mac.ops.set_source_address_pruning)
8012 hw->mac.ops.set_source_address_pruning(hw,
8013 true,
8014 p);
8015 }
Don Skidmore219efe92015-04-09 22:03:22 -07008016 break;
8017 case BRIDGE_MODE_VEB:
Don Skidmore6d4c96a2015-04-09 22:03:23 -07008018 /* enable Tx loopback for internal VF/PF communication */
Don Skidmore219efe92015-04-09 22:03:22 -07008019 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC,
8020 IXGBE_PFDTXGSWC_VT_LBEN);
Don Skidmore6d4c96a2015-04-09 22:03:23 -07008021
8022 /* disable Rx switching replication unless we have SR-IOV
8023 * virtual functions
8024 */
8025 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
8026 if (!adapter->num_vfs)
8027 vmdctl &= ~IXGBE_VT_CTL_REPLEN;
8028 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
8029
8030 /* disable Rx source address pruning, since we don't expect to
8031 * be receiving external loopback of our transmitted frames.
8032 */
8033 num_pools = adapter->num_vfs + adapter->num_rx_pools;
8034 for (p = 0; p < num_pools; p++) {
8035 if (hw->mac.ops.set_source_address_pruning)
8036 hw->mac.ops.set_source_address_pruning(hw,
8037 false,
8038 p);
8039 }
Don Skidmore219efe92015-04-09 22:03:22 -07008040 break;
8041 default:
8042 return -EINVAL;
8043 }
8044
8045 adapter->bridge_mode = mode;
8046
8047 e_info(drv, "enabling bridge mode: %s\n",
8048 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
8049
8050 return 0;
8051}
8052
John Fastabend815cccb2012-10-24 08:13:09 +00008053static int ixgbe_ndo_bridge_setlink(struct net_device *dev,
Roopa Prabhuadd511b2015-01-29 22:40:12 -08008054 struct nlmsghdr *nlh, u16 flags)
John Fastabend815cccb2012-10-24 08:13:09 +00008055{
8056 struct ixgbe_adapter *adapter = netdev_priv(dev);
8057 struct nlattr *attr, *br_spec;
8058 int rem;
8059
8060 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
8061 return -EOPNOTSUPP;
8062
8063 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
Thomas Graf4ea85e82014-11-26 13:42:18 +01008064 if (!br_spec)
8065 return -EINVAL;
John Fastabend815cccb2012-10-24 08:13:09 +00008066
8067 nla_for_each_nested(attr, br_spec, rem) {
Mark Rustada1e869d2015-04-10 10:36:36 -07008068 int status;
John Fastabend815cccb2012-10-24 08:13:09 +00008069 __u16 mode;
John Fastabend815cccb2012-10-24 08:13:09 +00008070
8071 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8072 continue;
8073
Thomas Grafb7c1a312014-11-26 13:42:17 +01008074 if (nla_len(attr) < sizeof(mode))
8075 return -EINVAL;
8076
John Fastabend815cccb2012-10-24 08:13:09 +00008077 mode = nla_get_u16(attr);
Don Skidmore219efe92015-04-09 22:03:22 -07008078 status = ixgbe_configure_bridge_mode(adapter, mode);
8079 if (status)
8080 return status;
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07008081
8082 break;
John Fastabend815cccb2012-10-24 08:13:09 +00008083 }
8084
8085 return 0;
8086}
8087
8088static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
Vlad Yasevich6cbdcee2013-02-13 12:00:13 +00008089 struct net_device *dev,
Nicolas Dichtel46c264d2015-04-28 18:33:49 +02008090 u32 filter_mask, int nlflags)
John Fastabend815cccb2012-10-24 08:13:09 +00008091{
8092 struct ixgbe_adapter *adapter = netdev_priv(dev);
John Fastabend815cccb2012-10-24 08:13:09 +00008093
8094 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
8095 return 0;
8096
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07008097 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
Nicolas Dichtel46c264d2015-04-28 18:33:49 +02008098 adapter->bridge_mode, 0, 0, nlflags);
John Fastabend815cccb2012-10-24 08:13:09 +00008099}
8100
John Fastabend2a47fa42013-11-06 09:54:52 -08008101static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev)
8102{
8103 struct ixgbe_fwd_adapter *fwd_adapter = NULL;
8104 struct ixgbe_adapter *adapter = netdev_priv(pdev);
Jacob Kelleraac2f1b2014-08-21 06:17:59 +00008105 int used_pools = adapter->num_vfs + adapter->num_rx_pools;
John Fastabend51f37732013-11-08 00:51:10 -08008106 unsigned int limit;
John Fastabend2a47fa42013-11-06 09:54:52 -08008107 int pool, err;
8108
Jacob Kelleraac2f1b2014-08-21 06:17:59 +00008109 /* Hardware has a limited number of available pools. Each VF, and the
8110 * PF require a pool. Check to ensure we don't attempt to use more
8111 * then the available number of pools.
8112 */
8113 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS)
8114 return ERR_PTR(-EINVAL);
8115
John Fastabend219354d2013-11-08 00:50:32 -08008116#ifdef CONFIG_RPS
8117 if (vdev->num_rx_queues != vdev->num_tx_queues) {
8118 netdev_info(pdev, "%s: Only supports a single queue count for TX and RX\n",
8119 vdev->name);
8120 return ERR_PTR(-EINVAL);
8121 }
8122#endif
John Fastabend2a47fa42013-11-06 09:54:52 -08008123 /* Check for hardware restriction on number of rx/tx queues */
John Fastabend219354d2013-11-08 00:50:32 -08008124 if (vdev->num_tx_queues > IXGBE_MAX_L2A_QUEUES ||
John Fastabend2a47fa42013-11-06 09:54:52 -08008125 vdev->num_tx_queues == IXGBE_BAD_L2A_QUEUE) {
8126 netdev_info(pdev,
8127 "%s: Supports RX/TX Queue counts 1,2, and 4\n",
8128 pdev->name);
8129 return ERR_PTR(-EINVAL);
8130 }
8131
8132 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
8133 adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS - 1) ||
8134 (adapter->num_rx_pools > IXGBE_MAX_MACVLANS))
8135 return ERR_PTR(-EBUSY);
8136
8137 fwd_adapter = kcalloc(1, sizeof(struct ixgbe_fwd_adapter), GFP_KERNEL);
8138 if (!fwd_adapter)
8139 return ERR_PTR(-ENOMEM);
8140
8141 pool = find_first_zero_bit(&adapter->fwd_bitmask, 32);
8142 adapter->num_rx_pools++;
8143 set_bit(pool, &adapter->fwd_bitmask);
John Fastabend51f37732013-11-08 00:51:10 -08008144 limit = find_last_bit(&adapter->fwd_bitmask, 32);
John Fastabend2a47fa42013-11-06 09:54:52 -08008145
8146 /* Enable VMDq flag so device will be set in VM mode */
8147 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED;
John Fastabend51f37732013-11-08 00:51:10 -08008148 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
John Fastabend219354d2013-11-08 00:50:32 -08008149 adapter->ring_feature[RING_F_RSS].limit = vdev->num_tx_queues;
John Fastabend2a47fa42013-11-06 09:54:52 -08008150
8151 /* Force reinit of ring allocation with VMDQ enabled */
8152 err = ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
8153 if (err)
8154 goto fwd_add_err;
8155 fwd_adapter->pool = pool;
8156 fwd_adapter->real_adapter = adapter;
8157 err = ixgbe_fwd_ring_up(vdev, fwd_adapter);
8158 if (err)
8159 goto fwd_add_err;
8160 netif_tx_start_all_queues(vdev);
8161 return fwd_adapter;
8162fwd_add_err:
8163 /* unwind counter and free adapter struct */
8164 netdev_info(pdev,
8165 "%s: dfwd hardware acceleration failed\n", vdev->name);
8166 clear_bit(pool, &adapter->fwd_bitmask);
8167 adapter->num_rx_pools--;
8168 kfree(fwd_adapter);
8169 return ERR_PTR(err);
8170}
8171
8172static void ixgbe_fwd_del(struct net_device *pdev, void *priv)
8173{
8174 struct ixgbe_fwd_adapter *fwd_adapter = priv;
8175 struct ixgbe_adapter *adapter = fwd_adapter->real_adapter;
John Fastabend51f37732013-11-08 00:51:10 -08008176 unsigned int limit;
John Fastabend2a47fa42013-11-06 09:54:52 -08008177
8178 clear_bit(fwd_adapter->pool, &adapter->fwd_bitmask);
8179 adapter->num_rx_pools--;
8180
John Fastabend51f37732013-11-08 00:51:10 -08008181 limit = find_last_bit(&adapter->fwd_bitmask, 32);
8182 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
John Fastabend2a47fa42013-11-06 09:54:52 -08008183 ixgbe_fwd_ring_down(fwd_adapter->netdev, fwd_adapter);
8184 ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
8185 netdev_dbg(pdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
8186 fwd_adapter->pool, adapter->num_rx_pools,
8187 fwd_adapter->rx_base_queue,
8188 fwd_adapter->rx_base_queue + adapter->num_rx_queues_per_pool,
8189 adapter->fwd_bitmask);
8190 kfree(fwd_adapter);
8191}
8192
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008193static const struct net_device_ops ixgbe_netdev_ops = {
Joe Perchese8e9f692010-09-07 21:34:53 +00008194 .ndo_open = ixgbe_open,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008195 .ndo_stop = ixgbe_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08008196 .ndo_start_xmit = ixgbe_xmit_frame,
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07008197 .ndo_select_queue = ixgbe_select_queue,
Alexander Duyck581330b2012-02-08 07:51:47 +00008198 .ndo_set_rx_mode = ixgbe_set_rx_mode,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008199 .ndo_validate_addr = eth_validate_addr,
8200 .ndo_set_mac_address = ixgbe_set_mac,
8201 .ndo_change_mtu = ixgbe_change_mtu,
8202 .ndo_tx_timeout = ixgbe_tx_timeout,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008203 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
8204 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
Ben Hutchings6b73e102009-04-29 08:08:58 +00008205 .ndo_do_ioctl = ixgbe_ioctl,
Greg Rose7f016482010-05-04 22:12:06 +00008206 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
8207 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04008208 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw,
Alexander Duyck581330b2012-02-08 07:51:47 +00008209 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk,
Vlad Zolotarove65ce0d2015-03-30 21:35:24 +03008210 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en,
Greg Rose7f016482010-05-04 22:12:06 +00008211 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
Eric Dumazetde1036b2010-10-20 23:00:04 +00008212 .ndo_get_stats64 = ixgbe_get_stats64,
Jeff Kirsher8af3c332012-02-18 07:08:14 +00008213#ifdef CONFIG_IXGBE_DCB
John Fastabend24095aa2011-02-23 05:58:03 +00008214 .ndo_setup_tc = ixgbe_setup_tc,
Jeff Kirsher8af3c332012-02-18 07:08:14 +00008215#endif
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008216#ifdef CONFIG_NET_POLL_CONTROLLER
8217 .ndo_poll_controller = ixgbe_netpoll,
8218#endif
Cong Wange0d10952013-08-01 11:10:25 +08008219#ifdef CONFIG_NET_RX_BUSY_POLL
Eliezer Tamir8b80cda2013-07-10 17:13:26 +03008220 .ndo_busy_poll = ixgbe_low_latency_recv,
Eliezer Tamir5a85e732013-06-10 11:40:20 +03008221#endif
Yi Zou332d4a72009-05-13 13:11:53 +00008222#ifdef IXGBE_FCOE
8223 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
Yi Zou68a683c2011-02-01 07:22:16 +00008224 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
Yi Zou332d4a72009-05-13 13:11:53 +00008225 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
Yi Zou8450ff82009-08-31 12:32:14 +00008226 .ndo_fcoe_enable = ixgbe_fcoe_enable,
8227 .ndo_fcoe_disable = ixgbe_fcoe_disable,
Yi Zou61a1fa12009-10-28 18:24:56 +00008228 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
Neerav Parikhea818752012-01-04 20:23:40 +00008229 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo,
Yi Zou332d4a72009-05-13 13:11:53 +00008230#endif /* IXGBE_FCOE */
Don Skidmore082757a2011-07-21 05:55:00 +00008231 .ndo_set_features = ixgbe_set_features,
8232 .ndo_fix_features = ixgbe_fix_features,
John Fastabend0f4b0ad2012-04-15 06:44:19 +00008233 .ndo_fdb_add = ixgbe_ndo_fdb_add,
John Fastabend815cccb2012-10-24 08:13:09 +00008234 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink,
8235 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink,
John Fastabend2a47fa42013-11-06 09:54:52 -08008236 .ndo_dfwd_add_station = ixgbe_fwd_add,
8237 .ndo_dfwd_del_station = ixgbe_fwd_del,
Don Skidmore3f207802014-12-23 07:40:34 +00008238 .ndo_add_vxlan_port = ixgbe_add_vxlan_port,
8239 .ndo_del_vxlan_port = ixgbe_del_vxlan_port,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008240};
8241
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008242/**
Jacob Kellere027d1a2013-07-31 06:53:31 +00008243 * ixgbe_enumerate_functions - Get the number of ports this device has
8244 * @adapter: adapter structure
8245 *
8246 * This function enumerates the phsyical functions co-located on a single slot,
8247 * in order to determine how many ports a device has. This is most useful in
8248 * determining the required GT/s of PCIe bandwidth necessary for optimal
8249 * performance.
8250 **/
8251static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter)
8252{
Jacob Kellercaafb952014-07-19 07:17:17 +00008253 struct pci_dev *entry, *pdev = adapter->pdev;
Jacob Kellere027d1a2013-07-31 06:53:31 +00008254 int physfns = 0;
8255
Jacob Kellerf1f96572013-08-31 02:45:38 +00008256 /* Some cards can not use the generic count PCIe functions method,
8257 * because they are behind a parent switch, so we hardcode these with
8258 * the correct number of functions.
Jacob Kellere027d1a2013-07-31 06:53:31 +00008259 */
Jacob Keller88189702014-07-19 07:17:16 +00008260 if (ixgbe_pcie_from_parent(&adapter->hw))
Jacob Kellere027d1a2013-07-31 06:53:31 +00008261 physfns = 4;
Jacob Keller88189702014-07-19 07:17:16 +00008262
8263 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) {
8264 /* don't count virtual functions */
Jacob Kellercaafb952014-07-19 07:17:17 +00008265 if (entry->is_virtfn)
8266 continue;
8267
8268 /* When the devices on the bus don't all match our device ID,
8269 * we can't reliably determine the correct number of
8270 * functions. This can occur if a function has been direct
8271 * attached to a virtual machine using VT-d, for example. In
8272 * this case, simply return -1 to indicate this.
8273 */
8274 if ((entry->vendor != pdev->vendor) ||
8275 (entry->device != pdev->device))
8276 return -1;
8277
8278 physfns++;
Jacob Kellere027d1a2013-07-31 06:53:31 +00008279 }
8280
8281 return physfns;
8282}
8283
8284/**
Jacob Keller8e2813f2012-04-21 06:05:40 +00008285 * ixgbe_wol_supported - Check whether device supports WoL
8286 * @hw: hw specific details
8287 * @device_id: the device ID
8288 * @subdev_id: the subsystem device ID
8289 *
8290 * This function is used by probe and ethtool to determine
8291 * which devices have WoL support
8292 *
8293 **/
8294int ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
8295 u16 subdevice_id)
8296{
8297 struct ixgbe_hw *hw = &adapter->hw;
8298 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK;
8299 int is_wol_supported = 0;
8300
8301 switch (device_id) {
8302 case IXGBE_DEV_ID_82599_SFP:
8303 /* Only these subdevices could supports WOL */
8304 switch (subdevice_id) {
Mark Rustad87557442014-02-25 17:58:55 -08008305 case IXGBE_SUBDEV_ID_82599_SFP_WOL0:
Jacob Keller8e2813f2012-04-21 06:05:40 +00008306 case IXGBE_SUBDEV_ID_82599_560FLR:
8307 /* only support first port */
8308 if (hw->bus.func != 0)
8309 break;
Emil Tantilov5700ff22013-04-18 08:18:55 +00008310 case IXGBE_SUBDEV_ID_82599_SP_560FLR:
Jacob Keller8e2813f2012-04-21 06:05:40 +00008311 case IXGBE_SUBDEV_ID_82599_SFP:
Don Skidmoreb6dfd932012-07-11 07:17:42 +00008312 case IXGBE_SUBDEV_ID_82599_RNDC:
Emil Tantilovf8a06c22012-08-16 08:13:07 +00008313 case IXGBE_SUBDEV_ID_82599_ECNA_DP:
Jacob Keller979fe5f2013-04-03 04:41:37 +00008314 case IXGBE_SUBDEV_ID_82599_LOM_SFP:
Jacob Keller8e2813f2012-04-21 06:05:40 +00008315 is_wol_supported = 1;
8316 break;
8317 }
8318 break;
Don Skidmore5daebbb2013-04-05 05:49:34 +00008319 case IXGBE_DEV_ID_82599EN_SFP:
8320 /* Only this subdevice supports WOL */
8321 switch (subdevice_id) {
8322 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1:
8323 is_wol_supported = 1;
8324 break;
8325 }
8326 break;
Jacob Keller8e2813f2012-04-21 06:05:40 +00008327 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
8328 /* All except this subdevice support WOL */
8329 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
8330 is_wol_supported = 1;
8331 break;
8332 case IXGBE_DEV_ID_82599_KX4:
8333 is_wol_supported = 1;
8334 break;
8335 case IXGBE_DEV_ID_X540T:
joshua.a.hay@intel.comdf376f02012-09-21 00:08:21 +00008336 case IXGBE_DEV_ID_X540T1:
Don Skidmoredf8c26f2015-06-09 16:00:17 -07008337 case IXGBE_DEV_ID_X550T:
8338 case IXGBE_DEV_ID_X550EM_X_KX4:
8339 case IXGBE_DEV_ID_X550EM_X_KR:
8340 case IXGBE_DEV_ID_X550EM_X_10G_T:
Jacob Keller8e2813f2012-04-21 06:05:40 +00008341 /* check eeprom to see if enabled wol */
8342 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) ||
8343 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) &&
8344 (hw->bus.func == 0))) {
8345 is_wol_supported = 1;
8346 }
8347 break;
8348 }
8349
8350 return is_wol_supported;
8351}
8352
8353/**
Martin K Petersenc762dff2014-11-15 14:24:51 +00008354 * ixgbe_get_platform_mac_addr - Look up MAC address in Open Firmware / IDPROM
8355 * @adapter: Pointer to adapter struct
8356 */
8357static void ixgbe_get_platform_mac_addr(struct ixgbe_adapter *adapter)
8358{
8359#ifdef CONFIG_OF
8360 struct device_node *dp = pci_device_to_OF_node(adapter->pdev);
8361 struct ixgbe_hw *hw = &adapter->hw;
8362 const unsigned char *addr;
8363
8364 addr = of_get_mac_address(dp);
8365 if (addr) {
8366 ether_addr_copy(hw->mac.perm_addr, addr);
8367 return;
8368 }
8369#endif /* CONFIG_OF */
8370
8371#ifdef CONFIG_SPARC
8372 ether_addr_copy(hw->mac.perm_addr, idprom->id_ethaddr);
8373#endif /* CONFIG_SPARC */
8374}
8375
8376/**
Auke Kok9a799d72007-09-15 14:07:45 -07008377 * ixgbe_probe - Device Initialization Routine
8378 * @pdev: PCI device information struct
8379 * @ent: entry in ixgbe_pci_tbl
8380 *
8381 * Returns 0 on success, negative on failure
8382 *
8383 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
8384 * The OS initialization, configuring of the adapter private structure,
8385 * and a hardware reset occur.
8386 **/
Greg Kroah-Hartman1dd06ae2012-12-06 14:30:56 +00008387static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Auke Kok9a799d72007-09-15 14:07:45 -07008388{
8389 struct net_device *netdev;
8390 struct ixgbe_adapter *adapter = NULL;
8391 struct ixgbe_hw *hw;
8392 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
Jacob Kellere027d1a2013-07-31 06:53:31 +00008393 int i, err, pci_using_dac, expected_gts;
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008394 unsigned int indices = MAX_TX_QUEUES;
Don Skidmore289700db2010-12-03 03:32:58 +00008395 u8 part_str[IXGBE_PBANUM_LENGTH];
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008396 bool disable_dev = false;
Yi Zoueacd73f2009-05-13 13:11:06 +00008397#ifdef IXGBE_FCOE
8398 u16 device_caps;
8399#endif
Don Skidmore289700db2010-12-03 03:32:58 +00008400 u32 eec;
Auke Kok9a799d72007-09-15 14:07:45 -07008401
Andy Gospodarekbded64a2010-07-21 06:40:31 +00008402 /* Catch broken hardware that put the wrong VF device ID in
8403 * the PCIe SR-IOV capability.
8404 */
8405 if (pdev->is_virtfn) {
8406 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
8407 pci_name(pdev), pdev->vendor, pdev->device);
8408 return -EINVAL;
8409 }
8410
gouji-new9ce77662009-05-06 10:44:45 +00008411 err = pci_enable_device_mem(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008412 if (err)
8413 return err;
8414
Russell Kingf5f2eda2013-06-10 12:47:42 +01008415 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
Auke Kok9a799d72007-09-15 14:07:45 -07008416 pci_using_dac = 1;
8417 } else {
Russell Kingf5f2eda2013-06-10 12:47:42 +01008418 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -07008419 if (err) {
Russell Kingf5f2eda2013-06-10 12:47:42 +01008420 dev_err(&pdev->dev,
8421 "No usable DMA configuration, aborting\n");
8422 goto err_dma;
Auke Kok9a799d72007-09-15 14:07:45 -07008423 }
8424 pci_using_dac = 0;
8425 }
8426
gouji-new9ce77662009-05-06 10:44:45 +00008427 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00008428 IORESOURCE_MEM), ixgbe_driver_name);
Auke Kok9a799d72007-09-15 14:07:45 -07008429 if (err) {
Dan Carpenterb8bc0422010-07-27 00:05:56 +00008430 dev_err(&pdev->dev,
8431 "pci_request_selected_regions failed 0x%x\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07008432 goto err_pci_reg;
8433 }
8434
Frans Pop19d5afd2009-10-02 10:04:12 -07008435 pci_enable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08008436
Auke Kok9a799d72007-09-15 14:07:45 -07008437 pci_set_master(pdev);
Wendy Xiongfb3b27b2008-04-23 11:09:24 -07008438 pci_save_state(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008439
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008440 if (ii->mac == ixgbe_mac_82598EB) {
John Fastabende901acd2011-04-26 07:26:08 +00008441#ifdef CONFIG_IXGBE_DCB
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008442 /* 8 TC w/ 4 queues per TC */
8443 indices = 4 * MAX_TRAFFIC_CLASS;
8444#else
8445 indices = IXGBE_MAX_RSS_INDICES;
John Fastabende901acd2011-04-26 07:26:08 +00008446#endif
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008447 }
John Fastabende901acd2011-04-26 07:26:08 +00008448
John Fastabendc85a2612010-02-25 23:15:21 +00008449 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
Auke Kok9a799d72007-09-15 14:07:45 -07008450 if (!netdev) {
8451 err = -ENOMEM;
8452 goto err_alloc_etherdev;
8453 }
8454
Auke Kok9a799d72007-09-15 14:07:45 -07008455 SET_NETDEV_DEV(netdev, &pdev->dev);
8456
Auke Kok9a799d72007-09-15 14:07:45 -07008457 adapter = netdev_priv(netdev);
8458
8459 adapter->netdev = netdev;
8460 adapter->pdev = pdev;
8461 hw = &adapter->hw;
8462 hw->back = adapter;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00008463 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kok9a799d72007-09-15 14:07:45 -07008464
Jeff Kirsher05857982008-09-11 19:57:00 -07008465 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
Joe Perchese8e9f692010-09-07 21:34:53 +00008466 pci_resource_len(pdev, 0));
Mark Rustad2a1a0912014-01-14 18:53:15 -08008467 adapter->io_addr = hw->hw_addr;
Auke Kok9a799d72007-09-15 14:07:45 -07008468 if (!hw->hw_addr) {
8469 err = -EIO;
8470 goto err_ioremap;
8471 }
8472
Stephen Hemminger0edc3522008-11-19 22:24:29 -08008473 netdev->netdev_ops = &ixgbe_netdev_ops;
Auke Kok9a799d72007-09-15 14:07:45 -07008474 ixgbe_set_ethtool_ops(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008475 netdev->watchdog_timeo = 5 * HZ;
Mark Rustad339de302014-06-06 01:57:06 +00008476 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
Auke Kok9a799d72007-09-15 14:07:45 -07008477
Auke Kok9a799d72007-09-15 14:07:45 -07008478 /* Setup hw api */
8479 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08008480 hw->mac.type = ii->mac;
Don Skidmore9a900ec2015-06-09 17:15:01 -07008481 hw->mvals = ii->mvals;
Auke Kok9a799d72007-09-15 14:07:45 -07008482
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008483 /* EEPROM */
8484 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
Don Skidmore9a900ec2015-06-09 17:15:01 -07008485 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
Mark Rustad58cf6632014-03-12 00:38:40 +00008486 if (ixgbe_removed(hw->hw_addr)) {
8487 err = -EIO;
8488 goto err_ioremap;
8489 }
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008490 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
8491 if (!(eec & (1 << 8)))
8492 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
8493
8494 /* PHY */
8495 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
Donald Skidmorec4900be2008-11-20 21:11:42 -08008496 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
Ben Hutchings6b73e102009-04-29 08:08:58 +00008497 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
8498 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
8499 hw->phy.mdio.mmds = 0;
8500 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
8501 hw->phy.mdio.dev = netdev;
8502 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
8503 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
Donald Skidmorec4900be2008-11-20 21:11:42 -08008504
Don Skidmore8ca783a2009-05-26 20:40:47 -07008505 ii->get_invariants(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07008506
8507 /* setup the private structure */
8508 err = ixgbe_sw_init(adapter);
8509 if (err)
8510 goto err_sw_init;
8511
Don Skidmoree86bff02010-02-11 04:14:08 +00008512 /* Make it possible the adapter to be woken up via WOL */
Don Skidmoreb93a2222010-11-16 19:27:17 -08008513 switch (adapter->hw.mac.type) {
8514 case ixgbe_mac_82599EB:
8515 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00008516 case ixgbe_mac_X550:
8517 case ixgbe_mac_X550EM_x:
Don Skidmoree86bff02010-02-11 04:14:08 +00008518 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Don Skidmoreb93a2222010-11-16 19:27:17 -08008519 break;
8520 default:
8521 break;
8522 }
Don Skidmoree86bff02010-02-11 04:14:08 +00008523
Don Skidmorebf069c92009-05-07 10:39:54 +00008524 /*
8525 * If there is a fan on this device and it has failed log the
8526 * failure.
8527 */
8528 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
8529 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
8530 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +00008531 e_crit(probe, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +00008532 }
8533
Peter P Waskiewicz Jr8ef78ad2012-02-01 09:19:21 +00008534 if (allow_unsupported_sfp)
8535 hw->allow_unsupported_sfp = allow_unsupported_sfp;
8536
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008537 /* reset_hw fills in the perm_addr as well */
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07008538 hw->phy.reset_if_overtemp = true;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008539 err = hw->mac.ops.reset_hw(hw);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07008540 hw->phy.reset_if_overtemp = false;
Don Skidmore8ca783a2009-05-26 20:40:47 -07008541 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
8542 hw->mac.type == ixgbe_mac_82598EB) {
Don Skidmore8ca783a2009-05-26 20:40:47 -07008543 err = 0;
8544 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore1b1bf312013-07-31 05:27:04 +00008545 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
8546 e_dev_err("Reload the driver after installing a supported module.\n");
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00008547 goto err_sw_init;
8548 } else if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00008549 e_dev_err("HW Init failed: %d\n", err);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008550 goto err_sw_init;
8551 }
8552
Alexander Duyck99d74482012-05-09 08:09:25 +00008553#ifdef CONFIG_PCI_IOV
Greg Rose60a1a682012-12-11 08:26:33 +00008554 /* SR-IOV not supported on the 82598 */
8555 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
8556 goto skip_sriov;
8557 /* Mailbox */
8558 ixgbe_init_mbx_params_pf(hw);
8559 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops));
ethan.zhaodcc23e32014-01-16 19:41:04 -08008560 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT);
ethan.zhao31ac9102014-01-16 19:41:05 -08008561 ixgbe_enable_sriov(adapter);
Greg Rose60a1a682012-12-11 08:26:33 +00008562skip_sriov:
Greg Rose1cdd1ec2010-01-09 02:26:46 +00008563
Alexander Duyck99d74482012-05-09 08:09:25 +00008564#endif
Emil Tantilov396e7992010-07-01 20:05:12 +00008565 netdev->features = NETIF_F_SG |
Joe Perchese8e9f692010-09-07 21:34:53 +00008566 NETIF_F_IP_CSUM |
Don Skidmore082757a2011-07-21 05:55:00 +00008567 NETIF_F_IPV6_CSUM |
Patrick McHardyf6469682013-04-19 02:04:27 +00008568 NETIF_F_HW_VLAN_CTAG_TX |
8569 NETIF_F_HW_VLAN_CTAG_RX |
Don Skidmore082757a2011-07-21 05:55:00 +00008570 NETIF_F_TSO |
8571 NETIF_F_TSO6 |
Don Skidmore082757a2011-07-21 05:55:00 +00008572 NETIF_F_RXHASH |
John Fastabend8bf12642013-11-12 12:13:29 +00008573 NETIF_F_RXCSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07008574
John Fastabend8bf12642013-11-12 12:13:29 +00008575 netdev->hw_features = netdev->features | NETIF_F_HW_L2FW_DOFFLOAD;
Jeff Kirsherad31c402008-06-05 04:05:30 -07008576
Don Skidmore58be7662011-04-12 09:42:11 +00008577 switch (adapter->hw.mac.type) {
8578 case ixgbe_mac_82599EB:
8579 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00008580 case ixgbe_mac_X550:
8581 case ixgbe_mac_X550EM_x:
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00008582 netdev->features |= NETIF_F_SCTP_CSUM;
Don Skidmore082757a2011-07-21 05:55:00 +00008583 netdev->hw_features |= NETIF_F_SCTP_CSUM |
8584 NETIF_F_NTUPLE;
Don Skidmore58be7662011-04-12 09:42:11 +00008585 break;
8586 default:
8587 break;
8588 }
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00008589
Ben Greear3f2d1c02012-03-08 08:28:41 +00008590 netdev->hw_features |= NETIF_F_RXALL;
Alexander Duyck87031c02015-04-09 22:03:24 -07008591 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
Ben Greear3f2d1c02012-03-08 08:28:41 +00008592
Jeff Kirsherad31c402008-06-05 04:05:30 -07008593 netdev->vlan_features |= NETIF_F_TSO;
8594 netdev->vlan_features |= NETIF_F_TSO6;
Jesse Brandeburg22f32b7a52008-08-26 04:27:18 -07008595 netdev->vlan_features |= NETIF_F_IP_CSUM;
Alexander Duyckcd1da502009-08-25 04:47:50 +00008596 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
Jeff Kirsherad31c402008-06-05 04:05:30 -07008597 netdev->vlan_features |= NETIF_F_SG;
8598
Jiri Pirko01789342011-08-16 06:29:00 +00008599 netdev->priv_flags |= IFF_UNICAST_FLT;
Ben Greearf43f3132012-03-06 09:42:04 +00008600 netdev->priv_flags |= IFF_SUPP_NOFCS;
Jiri Pirko01789342011-08-16 06:29:00 +00008601
Don Skidmore3f207802014-12-23 07:40:34 +00008602 switch (adapter->hw.mac.type) {
8603 case ixgbe_mac_X550:
8604 case ixgbe_mac_X550EM_x:
8605 netdev->hw_enc_features |= NETIF_F_RXCSUM;
8606 break;
8607 default:
8608 break;
8609 }
8610
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08008611#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08008612 netdev->dcbnl_ops = &dcbnl_ops;
8613#endif
8614
Yi Zoueacd73f2009-05-13 13:11:06 +00008615#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +00008616 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008617 unsigned int fcoe_l;
8618
Yi Zoueacd73f2009-05-13 13:11:06 +00008619 if (hw->mac.ops.get_device_caps) {
8620 hw->mac.ops.get_device_caps(hw, &device_caps);
Yi Zou0d551582009-07-22 14:07:12 +00008621 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
8622 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
Yi Zoueacd73f2009-05-13 13:11:06 +00008623 }
Alexander Duyck7c8ae652012-05-05 05:32:47 +00008624
Alexander Duyckd3cb9862013-01-16 01:35:35 +00008625
8626 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus());
8627 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l;
Alexander Duyck7c8ae652012-05-05 05:32:47 +00008628
Alexander Duycka58915c2012-05-25 06:38:18 +00008629 netdev->features |= NETIF_F_FSO |
8630 NETIF_F_FCOE_CRC;
8631
Alexander Duyck7c8ae652012-05-05 05:32:47 +00008632 netdev->vlan_features |= NETIF_F_FSO |
8633 NETIF_F_FCOE_CRC |
8634 NETIF_F_FCOE_MTU;
Yi Zou5e09d7f2010-07-19 13:59:52 +00008635 }
Yi Zoueacd73f2009-05-13 13:11:06 +00008636#endif /* IXGBE_FCOE */
Yi Zou7b872a52010-09-22 17:57:58 +00008637 if (pci_using_dac) {
Auke Kok9a799d72007-09-15 14:07:45 -07008638 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00008639 netdev->vlan_features |= NETIF_F_HIGHDMA;
8640 }
Auke Kok9a799d72007-09-15 14:07:45 -07008641
Don Skidmore082757a2011-07-21 05:55:00 +00008642 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
8643 netdev->hw_features |= NETIF_F_LRO;
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00008644 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Alexander Duyckf8212f92009-04-27 22:42:37 +00008645 netdev->features |= NETIF_F_LRO;
8646
Auke Kok9a799d72007-09-15 14:07:45 -07008647 /* make sure the EEPROM is good */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07008648 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
Emil Tantilov849c4542010-06-03 16:53:41 +00008649 e_dev_err("The EEPROM Checksum Is Not Valid\n");
Auke Kok9a799d72007-09-15 14:07:45 -07008650 err = -EIO;
Alexander Duyck35937c02012-02-08 07:51:37 +00008651 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07008652 }
8653
Martin K Petersenc762dff2014-11-15 14:24:51 +00008654 ixgbe_get_platform_mac_addr(adapter);
8655
Auke Kok9a799d72007-09-15 14:07:45 -07008656 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07008657
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +00008658 if (!is_valid_ether_addr(netdev->dev_addr)) {
Emil Tantilov849c4542010-06-03 16:53:41 +00008659 e_dev_err("invalid MAC address\n");
Auke Kok9a799d72007-09-15 14:07:45 -07008660 err = -EIO;
Alexander Duyck35937c02012-02-08 07:51:37 +00008661 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07008662 }
8663
Jacob Keller5d7daa32014-03-29 06:51:25 +00008664 ixgbe_mac_set_default_filter(adapter, hw->mac.perm_addr);
8665
Alexander Duyck70864002011-04-27 09:13:56 +00008666 setup_timer(&adapter->service_timer, &ixgbe_service_timer,
Alexander Duyck581330b2012-02-08 07:51:47 +00008667 (unsigned long) adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07008668
Mark Rustad58cf6632014-03-12 00:38:40 +00008669 if (ixgbe_removed(hw->hw_addr)) {
8670 err = -EIO;
8671 goto err_sw_init;
8672 }
Alexander Duyck70864002011-04-27 09:13:56 +00008673 INIT_WORK(&adapter->service_task, ixgbe_service_task);
Mark Rustad58cf6632014-03-12 00:38:40 +00008674 set_bit(__IXGBE_SERVICE_INITED, &adapter->state);
Alexander Duyck70864002011-04-27 09:13:56 +00008675 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07008676
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08008677 err = ixgbe_init_interrupt_scheme(adapter);
8678 if (err)
8679 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07008680
Jacob Keller8e2813f2012-04-21 06:05:40 +00008681 /* WOL not supported for all devices */
Emil Tantilovc23f5b62011-08-16 07:34:18 +00008682 adapter->wol = 0;
Jacob Keller8e2813f2012-04-21 06:05:40 +00008683 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap);
Jacob Keller6b92b0b2013-04-13 05:40:37 +00008684 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device,
Don Skidmoreb8f83632013-02-28 08:08:44 +00008685 pdev->subsystem_device);
Jacob Keller6b92b0b2013-04-13 05:40:37 +00008686 if (hw->wol_enabled)
Andy Gospodarek9417c462011-07-16 07:31:33 +00008687 adapter->wol = IXGBE_WUFC_MAG;
Emil Tantilovc23f5b62011-08-16 07:34:18 +00008688
PJ Waskiewicze8e26352009-02-27 15:45:05 +00008689 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
8690
Emil Tantilov15e52092011-09-29 05:01:29 +00008691 /* save off EEPROM version number */
8692 hw->eeprom.ops.read(hw, 0x2e, &adapter->eeprom_verh);
8693 hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl);
8694
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00008695 /* pick up the PCI bus settings for reporting later */
8696 hw->mac.ops.get_bus_info(hw);
Jacob Kellere027d1a2013-07-31 06:53:31 +00008697 if (ixgbe_pcie_from_parent(hw))
Jacob Kellerb8e82002013-04-09 07:20:09 +00008698 ixgbe_get_parent_bus_info(adapter);
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00008699
Jacob Kellere027d1a2013-07-31 06:53:31 +00008700 /* calculate the expected PCIe bandwidth required for optimal
8701 * performance. Note that some older parts will never have enough
8702 * bandwidth due to being older generation PCIe parts. We clamp these
8703 * parts to ensure no warning is displayed if it can't be fixed.
8704 */
8705 switch (hw->mac.type) {
8706 case ixgbe_mac_82598EB:
8707 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16);
8708 break;
8709 default:
8710 expected_gts = ixgbe_enumerate_functions(adapter) * 10;
8711 break;
Auke Kok0c254d82008-02-11 09:25:56 -08008712 }
Jacob Kellercaafb952014-07-19 07:17:17 +00008713
8714 /* don't check link if we failed to enumerate functions */
8715 if (expected_gts > 0)
8716 ixgbe_check_minimum_link(adapter, expected_gts);
Auke Kok0c254d82008-02-11 09:25:56 -08008717
Mark Rustad339de302014-06-06 01:57:06 +00008718 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str));
Jacob Keller6a2aae52013-10-18 05:09:24 +00008719 if (err)
Mark Rustad339de302014-06-06 01:57:06 +00008720 strlcpy(part_str, "Unknown", sizeof(part_str));
Jacob Keller6a2aae52013-10-18 05:09:24 +00008721 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
8722 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
8723 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
Jacob Kellere7cf7452014-04-09 06:03:10 +00008724 part_str);
Jacob Keller6a2aae52013-10-18 05:09:24 +00008725 else
8726 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
8727 hw->mac.type, hw->phy.type, part_str);
8728
8729 e_dev_info("%pM\n", netdev->dev_addr);
8730
Auke Kok9a799d72007-09-15 14:07:45 -07008731 /* reset the hardware with the new settings */
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00008732 err = hw->mac.ops.start_hw(hw);
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00008733 if (err == IXGBE_ERR_EEPROM_VERSION) {
8734 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +00008735 e_dev_warn("This device is a pre-production adapter/LOM. "
8736 "Please be aware there may be issues associated "
8737 "with your hardware. If you are experiencing "
8738 "problems please contact your Intel or hardware "
8739 "representative who provided you with this "
8740 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00008741 }
Auke Kok9a799d72007-09-15 14:07:45 -07008742 strcpy(netdev->name, "eth%d");
8743 err = register_netdev(netdev);
8744 if (err)
8745 goto err_register;
8746
Emil Tantilov0fb6a552014-12-04 03:03:38 +00008747 pci_set_drvdata(pdev, adapter);
8748
Emil Tantilovec74a472012-09-20 03:33:56 +00008749 /* power down the optics for 82599 SFP+ fiber */
8750 if (hw->mac.ops.disable_tx_laser)
Emil Tantilov93d3ce82011-10-19 07:59:55 +00008751 hw->mac.ops.disable_tx_laser(hw);
8752
Jesse Brandeburg54386462009-04-17 20:44:27 +00008753 /* carrier off reporting is important to ethtool even BEFORE open */
8754 netif_carrier_off(netdev);
8755
Jeff Garzik5dd2d332008-10-16 05:09:31 -04008756#ifdef CONFIG_IXGBE_DCA
Denis V. Lunev652f0932008-03-27 14:39:17 +03008757 if (dca_add_requester(&pdev->dev) == 0) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -08008758 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08008759 ixgbe_setup_dca(adapter);
8760 }
8761#endif
Greg Rose1cdd1ec2010-01-09 02:26:46 +00008762 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
Emil Tantilov396e7992010-07-01 20:05:12 +00008763 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00008764 for (i = 0; i < adapter->num_vfs; i++)
8765 ixgbe_vf_configuration(pdev, (i | 0x10000000));
8766 }
8767
Jacob Keller2466dd92011-09-08 03:50:54 +00008768 /* firmware requires driver version to be 0xFFFFFFFF
8769 * since os does not support feature
8770 */
Emil Tantilov9612de92011-05-07 07:40:20 +00008771 if (hw->mac.ops.set_fw_drv_ver)
Jacob Keller2466dd92011-09-08 03:50:54 +00008772 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF,
8773 0xFF);
Emil Tantilov9612de92011-05-07 07:40:20 +00008774
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008775 /* add san mac addr to netdev */
8776 ixgbe_add_sanmac_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008777
Neerav Parikhea818752012-01-04 20:23:40 +00008778 e_dev_info("%s\n", ixgbe_default_device_descr);
Don Skidmore3ca8bc62012-04-12 00:33:31 +00008779
Don Skidmore12109822012-05-04 06:07:08 +00008780#ifdef CONFIG_IXGBE_HWMON
Don Skidmore3ca8bc62012-04-12 00:33:31 +00008781 if (ixgbe_sysfs_init(adapter))
8782 e_err(probe, "failed to allocate sysfs resources\n");
Don Skidmore12109822012-05-04 06:07:08 +00008783#endif /* CONFIG_IXGBE_HWMON */
Don Skidmore3ca8bc62012-04-12 00:33:31 +00008784
Catherine Sullivan00949162012-08-10 01:59:10 +00008785 ixgbe_dbg_adapter_init(adapter);
Catherine Sullivan00949162012-08-10 01:59:10 +00008786
Emil Tantilovd1a35ee2014-05-13 08:24:00 +00008787 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
8788 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link)
Don Skidmore0b2679d2013-02-21 03:00:04 +00008789 hw->mac.ops.setup_link(hw,
8790 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL,
8791 true);
8792
Auke Kok9a799d72007-09-15 14:07:45 -07008793 return 0;
8794
8795err_register:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08008796 ixgbe_release_hw_control(adapter);
Alexander Duyck7a921c92009-05-06 10:43:28 +00008797 ixgbe_clear_interrupt_scheme(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07008798err_sw_init:
Alexander Duyck99d74482012-05-09 08:09:25 +00008799 ixgbe_disable_sriov(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +00008800 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
Mark Rustad2a1a0912014-01-14 18:53:15 -08008801 iounmap(adapter->io_addr);
Jacob Keller5d7daa32014-03-29 06:51:25 +00008802 kfree(adapter->mac_table);
Auke Kok9a799d72007-09-15 14:07:45 -07008803err_ioremap:
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008804 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07008805 free_netdev(netdev);
8806err_alloc_etherdev:
Joe Perchese8e9f692010-09-07 21:34:53 +00008807 pci_release_selected_regions(pdev,
8808 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07008809err_pci_reg:
8810err_dma:
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008811 if (!adapter || disable_dev)
Mark Rustad41c62842014-03-12 00:38:35 +00008812 pci_disable_device(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008813 return err;
8814}
8815
8816/**
8817 * ixgbe_remove - Device Removal Routine
8818 * @pdev: PCI device information struct
8819 *
8820 * ixgbe_remove is called by the PCI subsystem to alert the driver
8821 * that it should release a PCI device. The could be caused by a
8822 * Hot-Plug event, or because the driver is going to be removed from
8823 * memory.
8824 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05008825static void ixgbe_remove(struct pci_dev *pdev)
Auke Kok9a799d72007-09-15 14:07:45 -07008826{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08008827 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
Emil Tantilov0fb6a552014-12-04 03:03:38 +00008828 struct net_device *netdev;
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008829 bool disable_dev;
Auke Kok9a799d72007-09-15 14:07:45 -07008830
Emil Tantilov0fb6a552014-12-04 03:03:38 +00008831 /* if !adapter then we already cleaned up in probe */
8832 if (!adapter)
8833 return;
8834
8835 netdev = adapter->netdev;
Catherine Sullivan00949162012-08-10 01:59:10 +00008836 ixgbe_dbg_adapter_exit(adapter);
Catherine Sullivan00949162012-08-10 01:59:10 +00008837
Mark Rustad09f40ae2014-01-14 18:53:11 -08008838 set_bit(__IXGBE_REMOVING, &adapter->state);
Alexander Duyck70864002011-04-27 09:13:56 +00008839 cancel_work_sync(&adapter->service_task);
Auke Kok9a799d72007-09-15 14:07:45 -07008840
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008841
Jeff Garzik5dd2d332008-10-16 05:09:31 -04008842#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08008843 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
8844 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
8845 dca_remove_requester(&pdev->dev);
8846 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
8847 }
8848
8849#endif
Don Skidmore12109822012-05-04 06:07:08 +00008850#ifdef CONFIG_IXGBE_HWMON
Don Skidmore3ca8bc62012-04-12 00:33:31 +00008851 ixgbe_sysfs_exit(adapter);
Don Skidmore12109822012-05-04 06:07:08 +00008852#endif /* CONFIG_IXGBE_HWMON */
Don Skidmore3ca8bc62012-04-12 00:33:31 +00008853
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008854 /* remove the added san mac */
8855 ixgbe_del_sanmac_netdev(netdev);
8856
Donald Skidmorec4900be2008-11-20 21:11:42 -08008857 if (netdev->reg_state == NETREG_REGISTERED)
8858 unregister_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008859
Greg Roseda36b642012-12-11 08:26:43 +00008860#ifdef CONFIG_PCI_IOV
8861 /*
8862 * Only disable SR-IOV on unload if the user specified the now
8863 * deprecated max_vfs module parameter.
8864 */
8865 if (max_vfs)
8866 ixgbe_disable_sriov(adapter);
8867#endif
Alexander Duyck7a921c92009-05-06 10:43:28 +00008868 ixgbe_clear_interrupt_scheme(adapter);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08008869
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08008870 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07008871
Alexander Duyck2b1588c2012-03-17 02:39:16 +00008872#ifdef CONFIG_DCB
8873 kfree(adapter->ixgbe_ieee_pfc);
8874 kfree(adapter->ixgbe_ieee_ets);
8875
8876#endif
Mark Rustad2a1a0912014-01-14 18:53:15 -08008877 iounmap(adapter->io_addr);
gouji-new9ce77662009-05-06 10:44:45 +00008878 pci_release_selected_regions(pdev, pci_select_bars(pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00008879 IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07008880
Emil Tantilov849c4542010-06-03 16:53:41 +00008881 e_dev_info("complete\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08008882
Jacob Keller5d7daa32014-03-29 06:51:25 +00008883 kfree(adapter->mac_table);
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008884 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07008885 free_netdev(netdev);
8886
Frans Pop19d5afd2009-10-02 10:04:12 -07008887 pci_disable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08008888
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -08008889 if (disable_dev)
Mark Rustad41c62842014-03-12 00:38:35 +00008890 pci_disable_device(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07008891}
8892
8893/**
8894 * ixgbe_io_error_detected - called when PCI error is detected
8895 * @pdev: Pointer to PCI device
8896 * @state: The current pci connection state
8897 *
8898 * This function is called after a PCI bus error affecting
8899 * this device has been detected.
8900 */
8901static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00008902 pci_channel_state_t state)
Auke Kok9a799d72007-09-15 14:07:45 -07008903{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08008904 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
8905 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07008906
Greg Rose83c61fa2011-09-07 05:59:35 +00008907#ifdef CONFIG_PCI_IOV
Mark Rustad14438462014-02-28 15:48:57 -08008908 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose83c61fa2011-09-07 05:59:35 +00008909 struct pci_dev *bdev, *vfdev;
8910 u32 dw0, dw1, dw2, dw3;
8911 int vf, pos;
8912 u16 req_id, pf_func;
8913
8914 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
8915 adapter->num_vfs == 0)
8916 goto skip_bad_vf_detection;
8917
8918 bdev = pdev->bus->self;
Yijing Wang62f87c02012-07-24 17:20:03 +08008919 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT))
Greg Rose83c61fa2011-09-07 05:59:35 +00008920 bdev = bdev->bus->self;
8921
8922 if (!bdev)
8923 goto skip_bad_vf_detection;
8924
8925 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR);
8926 if (!pos)
8927 goto skip_bad_vf_detection;
8928
Mark Rustad14438462014-02-28 15:48:57 -08008929 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG);
8930 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4);
8931 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8);
8932 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12);
8933 if (ixgbe_removed(hw->hw_addr))
8934 goto skip_bad_vf_detection;
Greg Rose83c61fa2011-09-07 05:59:35 +00008935
8936 req_id = dw1 >> 16;
8937 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
8938 if (!(req_id & 0x0080))
8939 goto skip_bad_vf_detection;
8940
8941 pf_func = req_id & 0x01;
8942 if ((pf_func & 1) == (pdev->devfn & 1)) {
8943 unsigned int device_id;
8944
8945 vf = (req_id & 0x7F) >> 1;
8946 e_dev_err("VF %d has caused a PCIe error\n", vf);
8947 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
8948 "%8.8x\tdw3: %8.8x\n",
8949 dw0, dw1, dw2, dw3);
8950 switch (adapter->hw.mac.type) {
8951 case ixgbe_mac_82599EB:
8952 device_id = IXGBE_82599_VF_DEVICE_ID;
8953 break;
8954 case ixgbe_mac_X540:
8955 device_id = IXGBE_X540_VF_DEVICE_ID;
8956 break;
Don Skidmore9a75a1a2014-11-07 03:53:35 +00008957 case ixgbe_mac_X550:
8958 device_id = IXGBE_DEV_ID_X550_VF;
8959 break;
8960 case ixgbe_mac_X550EM_x:
8961 device_id = IXGBE_DEV_ID_X550EM_X_VF;
8962 break;
Greg Rose83c61fa2011-09-07 05:59:35 +00008963 default:
8964 device_id = 0;
8965 break;
8966 }
8967
8968 /* Find the pci device of the offending VF */
Jon Mason36e90312012-07-19 21:02:09 +00008969 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL);
Greg Rose83c61fa2011-09-07 05:59:35 +00008970 while (vfdev) {
8971 if (vfdev->devfn == (req_id & 0xFF))
8972 break;
Jon Mason36e90312012-07-19 21:02:09 +00008973 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
Greg Rose83c61fa2011-09-07 05:59:35 +00008974 device_id, vfdev);
8975 }
8976 /*
8977 * There's a slim chance the VF could have been hot plugged,
8978 * so if it is no longer present we don't need to issue the
8979 * VFLR. Just clean up the AER in that case.
8980 */
8981 if (vfdev) {
Emil Tantilov9079e412014-11-19 03:18:19 +00008982 ixgbe_issue_vf_flr(adapter, vfdev);
Greg Roseb4fafbe2012-12-13 01:14:06 +00008983 /* Free device reference count */
8984 pci_dev_put(vfdev);
Greg Rose83c61fa2011-09-07 05:59:35 +00008985 }
8986
8987 pci_cleanup_aer_uncorrect_error_status(pdev);
8988 }
8989
8990 /*
8991 * Even though the error may have occurred on the other port
8992 * we still need to increment the vf error reference count for
8993 * both ports because the I/O resume function will be called
8994 * for both of them.
8995 */
8996 adapter->vferr_refcount++;
8997
8998 return PCI_ERS_RESULT_RECOVERED;
8999
9000skip_bad_vf_detection:
9001#endif /* CONFIG_PCI_IOV */
Mark Rustad58cf6632014-03-12 00:38:40 +00009002 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
9003 return PCI_ERS_RESULT_DISCONNECT;
9004
Mark Rustad41c62842014-03-12 00:38:35 +00009005 rtnl_lock();
Auke Kok9a799d72007-09-15 14:07:45 -07009006 netif_device_detach(netdev);
9007
Mark Rustad41c62842014-03-12 00:38:35 +00009008 if (state == pci_channel_io_perm_failure) {
9009 rtnl_unlock();
Breno Leitao3044b8d2009-05-06 10:44:26 +00009010 return PCI_ERS_RESULT_DISCONNECT;
Mark Rustad41c62842014-03-12 00:38:35 +00009011 }
Breno Leitao3044b8d2009-05-06 10:44:26 +00009012
Auke Kok9a799d72007-09-15 14:07:45 -07009013 if (netif_running(netdev))
9014 ixgbe_down(adapter);
Mark Rustad41c62842014-03-12 00:38:35 +00009015
9016 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
9017 pci_disable_device(pdev);
9018 rtnl_unlock();
Auke Kok9a799d72007-09-15 14:07:45 -07009019
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07009020 /* Request a slot reset. */
Auke Kok9a799d72007-09-15 14:07:45 -07009021 return PCI_ERS_RESULT_NEED_RESET;
9022}
9023
9024/**
9025 * ixgbe_io_slot_reset - called after the pci bus has been reset.
9026 * @pdev: Pointer to PCI device
9027 *
9028 * Restart the card from scratch, as if from a cold-boot.
9029 */
9030static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
9031{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08009032 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009033 pci_ers_result_t result;
9034 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07009035
gouji-new9ce77662009-05-06 10:44:45 +00009036 if (pci_enable_device_mem(pdev)) {
Emil Tantilov396e7992010-07-01 20:05:12 +00009037 e_err(probe, "Cannot re-enable PCI device after reset.\n");
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009038 result = PCI_ERS_RESULT_DISCONNECT;
9039 } else {
Peter Zijlstra4e857c52014-03-17 18:06:10 +01009040 smp_mb__before_atomic();
Mark Rustad41c62842014-03-12 00:38:35 +00009041 clear_bit(__IXGBE_DISABLED, &adapter->state);
Mark Rustad0391bbe2014-02-28 15:48:55 -08009042 adapter->hw.hw_addr = adapter->io_addr;
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009043 pci_set_master(pdev);
9044 pci_restore_state(pdev);
Breno Leitaoc0e1f682009-11-10 08:37:47 +00009045 pci_save_state(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009046
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07009047 pci_wake_from_d3(pdev, false);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009048
9049 ixgbe_reset(adapter);
PJ Waskiewicz88512532009-03-13 22:15:10 +00009050 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009051 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9a799d72007-09-15 14:07:45 -07009052 }
Auke Kok9a799d72007-09-15 14:07:45 -07009053
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009054 err = pci_cleanup_aer_uncorrect_error_status(pdev);
9055 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00009056 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
9057 "failed 0x%0x\n", err);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009058 /* non-fatal, continue */
9059 }
Auke Kok9a799d72007-09-15 14:07:45 -07009060
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08009061 return result;
Auke Kok9a799d72007-09-15 14:07:45 -07009062}
9063
9064/**
9065 * ixgbe_io_resume - called when traffic can start flowing again.
9066 * @pdev: Pointer to PCI device
9067 *
9068 * This callback is called when the error recovery driver tells us that
9069 * its OK to resume normal operation.
9070 */
9071static void ixgbe_io_resume(struct pci_dev *pdev)
9072{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08009073 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
9074 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07009075
Greg Rose83c61fa2011-09-07 05:59:35 +00009076#ifdef CONFIG_PCI_IOV
9077 if (adapter->vferr_refcount) {
9078 e_info(drv, "Resuming after VF err\n");
9079 adapter->vferr_refcount--;
9080 return;
9081 }
9082
9083#endif
Alexander Duyckc7ccde02011-07-21 00:40:40 +00009084 if (netif_running(netdev))
9085 ixgbe_up(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07009086
9087 netif_device_attach(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07009088}
9089
Stephen Hemminger3646f0e2012-09-07 09:33:15 -07009090static const struct pci_error_handlers ixgbe_err_handler = {
Auke Kok9a799d72007-09-15 14:07:45 -07009091 .error_detected = ixgbe_io_error_detected,
9092 .slot_reset = ixgbe_io_slot_reset,
9093 .resume = ixgbe_io_resume,
9094};
9095
9096static struct pci_driver ixgbe_driver = {
9097 .name = ixgbe_driver_name,
9098 .id_table = ixgbe_pci_tbl,
9099 .probe = ixgbe_probe,
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05009100 .remove = ixgbe_remove,
Auke Kok9a799d72007-09-15 14:07:45 -07009101#ifdef CONFIG_PM
9102 .suspend = ixgbe_suspend,
9103 .resume = ixgbe_resume,
9104#endif
9105 .shutdown = ixgbe_shutdown,
Greg Roseda36b642012-12-11 08:26:43 +00009106 .sriov_configure = ixgbe_pci_sriov_configure,
Auke Kok9a799d72007-09-15 14:07:45 -07009107 .err_handler = &ixgbe_err_handler
9108};
9109
9110/**
9111 * ixgbe_init_module - Driver Registration Routine
9112 *
9113 * ixgbe_init_module is the first routine called when the driver is
9114 * loaded. All it does is register with the PCI subsystem.
9115 **/
9116static int __init ixgbe_init_module(void)
9117{
9118 int ret;
Joe Perchesc7689572010-09-07 21:35:17 +00009119 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
Emil Tantilov849c4542010-06-03 16:53:41 +00009120 pr_info("%s\n", ixgbe_copyright);
Auke Kok9a799d72007-09-15 14:07:45 -07009121
Catherine Sullivan00949162012-08-10 01:59:10 +00009122 ixgbe_dbg_init();
Catherine Sullivan00949162012-08-10 01:59:10 +00009123
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +00009124 ret = pci_register_driver(&ixgbe_driver);
9125 if (ret) {
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +00009126 ixgbe_dbg_exit();
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +00009127 return ret;
9128 }
9129
Jeff Garzik5dd2d332008-10-16 05:09:31 -04009130#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009131 dca_register_notify(&dca_notifier);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009132#endif
Jeff Garzik5dd2d332008-10-16 05:09:31 -04009133
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +00009134 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07009135}
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07009136
Auke Kok9a799d72007-09-15 14:07:45 -07009137module_init(ixgbe_init_module);
9138
9139/**
9140 * ixgbe_exit_module - Driver Exit Cleanup Routine
9141 *
9142 * ixgbe_exit_module is called just before the driver is removed
9143 * from memory.
9144 **/
9145static void __exit ixgbe_exit_module(void)
9146{
Jeff Garzik5dd2d332008-10-16 05:09:31 -04009147#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009148 dca_unregister_notify(&dca_notifier);
9149#endif
Auke Kok9a799d72007-09-15 14:07:45 -07009150 pci_unregister_driver(&ixgbe_driver);
Catherine Sullivan00949162012-08-10 01:59:10 +00009151
Catherine Sullivan00949162012-08-10 01:59:10 +00009152 ixgbe_dbg_exit();
Auke Kok9a799d72007-09-15 14:07:45 -07009153}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009154
Jeff Garzik5dd2d332008-10-16 05:09:31 -04009155#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009156static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +00009157 void *p)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009158{
9159 int ret_val;
9160
9161 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
Joe Perchese8e9f692010-09-07 21:34:53 +00009162 __ixgbe_notify_dca);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009163
9164 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
9165}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08009166
Alexander Duyckb4533682009-03-31 21:32:42 +00009167#endif /* CONFIG_IXGBE_DCA */
Emil Tantilov849c4542010-06-03 16:53:41 +00009168
Auke Kok9a799d72007-09-15 14:07:45 -07009169module_exit(ixgbe_exit_module);
9170
9171/* ixgbe_main.c */