blob: 6469f9715e1b55ec2a150652f24bed5e465625af [file] [log] [blame]
Carolyn Wybornye52c0f92014-04-11 01:46:06 +00001/* Intel(R) Gigabit Ethernet Linux driver
2 * Copyright(c) 2007-2014 Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, see <http://www.gnu.org/licenses/>.
15 *
16 * The full GNU General Public License is included in this distribution in
17 * the file called "COPYING".
18 *
19 * Contact Information:
20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 */
Auke Kok9d5c8242008-01-24 02:22:38 -080023
Jeff Kirsher876d2d62011-10-21 20:01:34 +000024#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
Auke Kok9d5c8242008-01-24 02:22:38 -080026#include <linux/module.h>
27#include <linux/types.h>
28#include <linux/init.h>
Jiri Pirkob2cb09b2011-07-21 03:27:27 +000029#include <linux/bitops.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080030#include <linux/vmalloc.h>
31#include <linux/pagemap.h>
32#include <linux/netdevice.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080033#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090034#include <linux/slab.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080035#include <net/checksum.h>
36#include <net/ip6_checksum.h>
Patrick Ohlyc6cb0902009-02-12 05:03:42 +000037#include <linux/net_tstamp.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080038#include <linux/mii.h>
39#include <linux/ethtool.h>
Jiri Pirko01789342011-08-16 06:29:00 +000040#include <linux/if.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080041#include <linux/if_vlan.h>
42#include <linux/pci.h>
Alexander Duyckc54106b2008-10-16 21:26:57 -070043#include <linux/pci-aspm.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080044#include <linux/delay.h>
45#include <linux/interrupt.h>
Alexander Duyck7d13a7d2011-08-26 07:44:32 +000046#include <linux/ip.h>
47#include <linux/tcp.h>
48#include <linux/sctp.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080049#include <linux/if_ether.h>
Alexander Duyck40a914f2008-11-27 00:24:37 -080050#include <linux/aer.h>
Paul Gortmaker70c71602011-05-22 16:47:17 -040051#include <linux/prefetch.h>
Yan, Zheng749ab2c2012-01-04 20:23:37 +000052#include <linux/pm_runtime.h>
Jeff Kirsher421e02f2008-10-17 11:08:31 -070053#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -070054#include <linux/dca.h>
55#endif
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +000056#include <linux/i2c.h>
Auke Kok9d5c8242008-01-24 02:22:38 -080057#include "igb.h"
58
Carolyn Wyborny67b1b902013-04-17 16:44:53 +000059#define MAJ 5
60#define MIN 0
Akeem G Abodunrin66f40b82013-08-22 14:23:10 +000061#define BUILD 5
Carolyn Wyborny0d1fe822011-03-11 20:58:19 -080062#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
Carolyn Wyborny929dd042011-05-26 03:02:26 +000063__stringify(BUILD) "-k"
Auke Kok9d5c8242008-01-24 02:22:38 -080064char igb_driver_name[] = "igb";
65char igb_driver_version[] = DRV_VERSION;
66static const char igb_driver_string[] =
67 "Intel(R) Gigabit Ethernet Network Driver";
Akeem G. Abodunrin4b9ea462013-01-08 18:31:12 +000068static const char igb_copyright[] =
Carolyn Wyborny74cfb2e2014-02-25 17:58:57 -080069 "Copyright (c) 2007-2014 Intel Corporation.";
Auke Kok9d5c8242008-01-24 02:22:38 -080070
Auke Kok9d5c8242008-01-24 02:22:38 -080071static const struct e1000_info *igb_info_tbl[] = {
72 [board_82575] = &e1000_82575_info,
73};
74
Alexey Dobriyana3aa1882010-01-07 11:58:11 +000075static DEFINE_PCI_DEVICE_TABLE(igb_pci_tbl) = {
Carolyn Wybornyceb5f132013-04-18 22:21:30 +000076 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_1GBPS) },
77 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_SGMII) },
78 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_2_5GBPS) },
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +000079 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I211_COPPER), board_82575 },
80 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER), board_82575 },
81 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_FIBER), board_82575 },
82 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES), board_82575 },
83 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SGMII), board_82575 },
Carolyn Wyborny53b87ce2013-07-16 19:18:36 +000084 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER_FLASHLESS), board_82575 },
85 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES_FLASHLESS), board_82575 },
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +000086 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER), board_82575 },
87 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER), board_82575 },
88 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES), board_82575 },
89 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII), board_82575 },
Alexander Duyck55cac242009-11-19 12:42:21 +000090 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 },
91 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 },
Carolyn Wyborny6493d242011-01-14 05:33:46 +000092 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER), board_82575 },
Alexander Duyck55cac242009-11-19 12:42:21 +000093 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 },
94 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 },
95 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 },
Joseph Gasparakis308fb392010-09-22 17:56:44 +000096 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII), board_82575 },
97 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES), board_82575 },
Gasparakis, Joseph1b5dda32010-12-09 01:41:01 +000098 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE), board_82575 },
99 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP), board_82575 },
Alexander Duyck2d064c02008-07-08 15:10:12 -0700100 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 },
Alexander Duyck9eb23412009-03-13 20:42:15 +0000101 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 },
Alexander Duyck747d49b2009-10-05 06:33:27 +0000102 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 },
Alexander Duyck2d064c02008-07-08 15:10:12 -0700103 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 },
104 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 },
Alexander Duyck4703bf72009-07-23 18:09:48 +0000105 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 },
Carolyn Wybornyb894fa22010-03-19 06:07:48 +0000106 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2), board_82575 },
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +0000107 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 },
Auke Kok9d5c8242008-01-24 02:22:38 -0800108 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
109 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
110 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
111 /* required last entry */
112 {0, }
113};
114
115MODULE_DEVICE_TABLE(pci, igb_pci_tbl);
116
117void igb_reset(struct igb_adapter *);
118static int igb_setup_all_tx_resources(struct igb_adapter *);
119static int igb_setup_all_rx_resources(struct igb_adapter *);
120static void igb_free_all_tx_resources(struct igb_adapter *);
121static void igb_free_all_rx_resources(struct igb_adapter *);
Alexander Duyck06cf2662009-10-27 15:53:25 +0000122static void igb_setup_mrqc(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800123static int igb_probe(struct pci_dev *, const struct pci_device_id *);
Bill Pemberton9f9a12f2012-12-03 09:24:25 -0500124static void igb_remove(struct pci_dev *pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -0800125static int igb_sw_init(struct igb_adapter *);
126static int igb_open(struct net_device *);
127static int igb_close(struct net_device *);
Stefan Assmann53c7d062012-12-04 06:00:12 +0000128static void igb_configure(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800129static void igb_configure_tx(struct igb_adapter *);
130static void igb_configure_rx(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800131static void igb_clean_all_tx_rings(struct igb_adapter *);
132static void igb_clean_all_rx_rings(struct igb_adapter *);
Mitch Williams3b644cf2008-06-27 10:59:48 -0700133static void igb_clean_tx_ring(struct igb_ring *);
134static void igb_clean_rx_ring(struct igb_ring *);
Alexander Duyckff41f8d2009-09-03 14:48:56 +0000135static void igb_set_rx_mode(struct net_device *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800136static void igb_update_phy_info(unsigned long);
137static void igb_watchdog(unsigned long);
138static void igb_watchdog_task(struct work_struct *);
Alexander Duyckcd392f52011-08-26 07:43:59 +0000139static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, struct net_device *);
Eric Dumazet12dcd862010-10-15 17:27:10 +0000140static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *dev,
141 struct rtnl_link_stats64 *stats);
Auke Kok9d5c8242008-01-24 02:22:38 -0800142static int igb_change_mtu(struct net_device *, int);
143static int igb_set_mac(struct net_device *, void *);
Alexander Duyck68d480c2009-10-05 06:33:08 +0000144static void igb_set_uta(struct igb_adapter *adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -0800145static irqreturn_t igb_intr(int irq, void *);
146static irqreturn_t igb_intr_msi(int irq, void *);
147static irqreturn_t igb_msix_other(int irq, void *);
Alexander Duyck047e0032009-10-27 15:49:27 +0000148static irqreturn_t igb_msix_ring(int irq, void *);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700149#ifdef CONFIG_IGB_DCA
Alexander Duyck047e0032009-10-27 15:49:27 +0000150static void igb_update_dca(struct igb_q_vector *);
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700151static void igb_setup_dca(struct igb_adapter *);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700152#endif /* CONFIG_IGB_DCA */
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -0700153static int igb_poll(struct napi_struct *, int);
Alexander Duyck13fde972011-10-05 13:35:24 +0000154static bool igb_clean_tx_irq(struct igb_q_vector *);
Alexander Duyckcd392f52011-08-26 07:43:59 +0000155static bool igb_clean_rx_irq(struct igb_q_vector *, int);
Auke Kok9d5c8242008-01-24 02:22:38 -0800156static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
157static void igb_tx_timeout(struct net_device *);
158static void igb_reset_task(struct work_struct *);
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000159static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features);
Patrick McHardy80d5c362013-04-19 02:04:28 +0000160static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16);
161static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16);
Auke Kok9d5c8242008-01-24 02:22:38 -0800162static void igb_restore_vlan(struct igb_adapter *);
Alexander Duyck26ad9172009-10-05 06:32:49 +0000163static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8);
Alexander Duyck4ae196d2009-02-19 20:40:07 -0800164static void igb_ping_all_vfs(struct igb_adapter *);
165static void igb_msg_task(struct igb_adapter *);
Alexander Duyck4ae196d2009-02-19 20:40:07 -0800166static void igb_vmm_control(struct igb_adapter *);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +0000167static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *);
Alexander Duyck4ae196d2009-02-19 20:40:07 -0800168static void igb_restore_vf_multicasts(struct igb_adapter *adapter);
Williams, Mitch A8151d292010-02-10 01:44:24 +0000169static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac);
170static int igb_ndo_set_vf_vlan(struct net_device *netdev,
171 int vf, u16 vlan, u8 qos);
172static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate);
Lior Levy70ea4782013-03-03 20:27:48 +0000173static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
174 bool setting);
Williams, Mitch A8151d292010-02-10 01:44:24 +0000175static int igb_ndo_get_vf_config(struct net_device *netdev, int vf,
176 struct ifla_vf_info *ivi);
Lior Levy17dc5662011-02-08 02:28:46 +0000177static void igb_check_vf_rate_limit(struct igb_adapter *);
RongQing Li46a01692011-10-18 22:52:35 +0000178
179#ifdef CONFIG_PCI_IOV
Greg Rose0224d662011-10-14 02:57:14 +0000180static int igb_vf_configure(struct igb_adapter *adapter, int vf);
Stefan Assmann781798a2013-09-24 05:18:39 +0000181static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs);
RongQing Li46a01692011-10-18 22:52:35 +0000182#endif
Auke Kok9d5c8242008-01-24 02:22:38 -0800183
Auke Kok9d5c8242008-01-24 02:22:38 -0800184#ifdef CONFIG_PM
Emil Tantilovd9dd9662012-01-28 08:10:35 +0000185#ifdef CONFIG_PM_SLEEP
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000186static int igb_suspend(struct device *);
Emil Tantilovd9dd9662012-01-28 08:10:35 +0000187#endif
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000188static int igb_resume(struct device *);
189#ifdef CONFIG_PM_RUNTIME
190static int igb_runtime_suspend(struct device *dev);
191static int igb_runtime_resume(struct device *dev);
192static int igb_runtime_idle(struct device *dev);
193#endif
194static const struct dev_pm_ops igb_pm_ops = {
195 SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume)
196 SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume,
197 igb_runtime_idle)
198};
Auke Kok9d5c8242008-01-24 02:22:38 -0800199#endif
200static void igb_shutdown(struct pci_dev *);
Greg Rosefa44f2f2013-01-17 01:03:06 -0800201static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700202#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700203static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
204static struct notifier_block dca_notifier = {
205 .notifier_call = igb_notify_dca,
206 .next = NULL,
207 .priority = 0
208};
209#endif
Auke Kok9d5c8242008-01-24 02:22:38 -0800210#ifdef CONFIG_NET_POLL_CONTROLLER
211/* for netdump / net console */
212static void igb_netpoll(struct net_device *);
213#endif
Alexander Duyck37680112009-02-19 20:40:30 -0800214#ifdef CONFIG_PCI_IOV
Alexander Duyck2a3abf62009-04-07 14:37:52 +0000215static unsigned int max_vfs = 0;
216module_param(max_vfs, uint, 0);
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000217MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function");
Alexander Duyck2a3abf62009-04-07 14:37:52 +0000218#endif /* CONFIG_PCI_IOV */
219
Auke Kok9d5c8242008-01-24 02:22:38 -0800220static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
221 pci_channel_state_t);
222static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
223static void igb_io_resume(struct pci_dev *);
224
Stephen Hemminger3646f0e2012-09-07 09:33:15 -0700225static const struct pci_error_handlers igb_err_handler = {
Auke Kok9d5c8242008-01-24 02:22:38 -0800226 .error_detected = igb_io_error_detected,
227 .slot_reset = igb_io_slot_reset,
228 .resume = igb_io_resume,
229};
230
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +0000231static void igb_init_dmac(struct igb_adapter *adapter, u32 pba);
Auke Kok9d5c8242008-01-24 02:22:38 -0800232
233static struct pci_driver igb_driver = {
234 .name = igb_driver_name,
235 .id_table = igb_pci_tbl,
236 .probe = igb_probe,
Bill Pemberton9f9a12f2012-12-03 09:24:25 -0500237 .remove = igb_remove,
Auke Kok9d5c8242008-01-24 02:22:38 -0800238#ifdef CONFIG_PM
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000239 .driver.pm = &igb_pm_ops,
Auke Kok9d5c8242008-01-24 02:22:38 -0800240#endif
241 .shutdown = igb_shutdown,
Greg Rosefa44f2f2013-01-17 01:03:06 -0800242 .sriov_configure = igb_pci_sriov_configure,
Auke Kok9d5c8242008-01-24 02:22:38 -0800243 .err_handler = &igb_err_handler
244};
245
246MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
247MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
248MODULE_LICENSE("GPL");
249MODULE_VERSION(DRV_VERSION);
250
stephen hemmingerb3f4d592012-03-13 06:04:20 +0000251#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
252static int debug = -1;
253module_param(debug, int, 0);
254MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
255
Taku Izumic97ec422010-04-27 14:39:30 +0000256struct igb_reg_info {
257 u32 ofs;
258 char *name;
259};
260
261static const struct igb_reg_info igb_reg_info_tbl[] = {
262
263 /* General Registers */
264 {E1000_CTRL, "CTRL"},
265 {E1000_STATUS, "STATUS"},
266 {E1000_CTRL_EXT, "CTRL_EXT"},
267
268 /* Interrupt Registers */
269 {E1000_ICR, "ICR"},
270
271 /* RX Registers */
272 {E1000_RCTL, "RCTL"},
273 {E1000_RDLEN(0), "RDLEN"},
274 {E1000_RDH(0), "RDH"},
275 {E1000_RDT(0), "RDT"},
276 {E1000_RXDCTL(0), "RXDCTL"},
277 {E1000_RDBAL(0), "RDBAL"},
278 {E1000_RDBAH(0), "RDBAH"},
279
280 /* TX Registers */
281 {E1000_TCTL, "TCTL"},
282 {E1000_TDBAL(0), "TDBAL"},
283 {E1000_TDBAH(0), "TDBAH"},
284 {E1000_TDLEN(0), "TDLEN"},
285 {E1000_TDH(0), "TDH"},
286 {E1000_TDT(0), "TDT"},
287 {E1000_TXDCTL(0), "TXDCTL"},
288 {E1000_TDFH, "TDFH"},
289 {E1000_TDFT, "TDFT"},
290 {E1000_TDFHS, "TDFHS"},
291 {E1000_TDFPC, "TDFPC"},
292
293 /* List Terminator */
294 {}
295};
296
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000297/* igb_regdump - register printout routine */
Taku Izumic97ec422010-04-27 14:39:30 +0000298static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo)
299{
300 int n = 0;
301 char rname[16];
302 u32 regs[8];
303
304 switch (reginfo->ofs) {
305 case E1000_RDLEN(0):
306 for (n = 0; n < 4; n++)
307 regs[n] = rd32(E1000_RDLEN(n));
308 break;
309 case E1000_RDH(0):
310 for (n = 0; n < 4; n++)
311 regs[n] = rd32(E1000_RDH(n));
312 break;
313 case E1000_RDT(0):
314 for (n = 0; n < 4; n++)
315 regs[n] = rd32(E1000_RDT(n));
316 break;
317 case E1000_RXDCTL(0):
318 for (n = 0; n < 4; n++)
319 regs[n] = rd32(E1000_RXDCTL(n));
320 break;
321 case E1000_RDBAL(0):
322 for (n = 0; n < 4; n++)
323 regs[n] = rd32(E1000_RDBAL(n));
324 break;
325 case E1000_RDBAH(0):
326 for (n = 0; n < 4; n++)
327 regs[n] = rd32(E1000_RDBAH(n));
328 break;
329 case E1000_TDBAL(0):
330 for (n = 0; n < 4; n++)
331 regs[n] = rd32(E1000_RDBAL(n));
332 break;
333 case E1000_TDBAH(0):
334 for (n = 0; n < 4; n++)
335 regs[n] = rd32(E1000_TDBAH(n));
336 break;
337 case E1000_TDLEN(0):
338 for (n = 0; n < 4; n++)
339 regs[n] = rd32(E1000_TDLEN(n));
340 break;
341 case E1000_TDH(0):
342 for (n = 0; n < 4; n++)
343 regs[n] = rd32(E1000_TDH(n));
344 break;
345 case E1000_TDT(0):
346 for (n = 0; n < 4; n++)
347 regs[n] = rd32(E1000_TDT(n));
348 break;
349 case E1000_TXDCTL(0):
350 for (n = 0; n < 4; n++)
351 regs[n] = rd32(E1000_TXDCTL(n));
352 break;
353 default:
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000354 pr_info("%-15s %08x\n", reginfo->name, rd32(reginfo->ofs));
Taku Izumic97ec422010-04-27 14:39:30 +0000355 return;
356 }
357
358 snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000359 pr_info("%-15s %08x %08x %08x %08x\n", rname, regs[0], regs[1],
360 regs[2], regs[3]);
Taku Izumic97ec422010-04-27 14:39:30 +0000361}
362
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000363/* igb_dump - Print registers, Tx-rings and Rx-rings */
Taku Izumic97ec422010-04-27 14:39:30 +0000364static void igb_dump(struct igb_adapter *adapter)
365{
366 struct net_device *netdev = adapter->netdev;
367 struct e1000_hw *hw = &adapter->hw;
368 struct igb_reg_info *reginfo;
Taku Izumic97ec422010-04-27 14:39:30 +0000369 struct igb_ring *tx_ring;
370 union e1000_adv_tx_desc *tx_desc;
371 struct my_u0 { u64 a; u64 b; } *u0;
Taku Izumic97ec422010-04-27 14:39:30 +0000372 struct igb_ring *rx_ring;
373 union e1000_adv_rx_desc *rx_desc;
374 u32 staterr;
Alexander Duyck6ad4edf2011-08-26 07:45:26 +0000375 u16 i, n;
Taku Izumic97ec422010-04-27 14:39:30 +0000376
377 if (!netif_msg_hw(adapter))
378 return;
379
380 /* Print netdevice Info */
381 if (netdev) {
382 dev_info(&adapter->pdev->dev, "Net device Info\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000383 pr_info("Device Name state trans_start last_rx\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000384 pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
385 netdev->state, netdev->trans_start, netdev->last_rx);
Taku Izumic97ec422010-04-27 14:39:30 +0000386 }
387
388 /* Print Registers */
389 dev_info(&adapter->pdev->dev, "Register Dump\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000390 pr_info(" Register Name Value\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000391 for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl;
392 reginfo->name; reginfo++) {
393 igb_regdump(hw, reginfo);
394 }
395
396 /* Print TX Ring Summary */
397 if (!netdev || !netif_running(netdev))
398 goto exit;
399
400 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000401 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000402 for (n = 0; n < adapter->num_tx_queues; n++) {
Alexander Duyck06034642011-08-26 07:44:22 +0000403 struct igb_tx_buffer *buffer_info;
Taku Izumic97ec422010-04-27 14:39:30 +0000404 tx_ring = adapter->tx_ring[n];
Alexander Duyck06034642011-08-26 07:44:22 +0000405 buffer_info = &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000406 pr_info(" %5d %5X %5X %016llX %04X %p %016llX\n",
407 n, tx_ring->next_to_use, tx_ring->next_to_clean,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000408 (u64)dma_unmap_addr(buffer_info, dma),
409 dma_unmap_len(buffer_info, len),
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000410 buffer_info->next_to_watch,
411 (u64)buffer_info->time_stamp);
Taku Izumic97ec422010-04-27 14:39:30 +0000412 }
413
414 /* Print TX Rings */
415 if (!netif_msg_tx_done(adapter))
416 goto rx_ring_summary;
417
418 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
419
420 /* Transmit Descriptor Formats
421 *
422 * Advanced Transmit Descriptor
423 * +--------------------------------------------------------------+
424 * 0 | Buffer Address [63:0] |
425 * +--------------------------------------------------------------+
426 * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN |
427 * +--------------------------------------------------------------+
428 * 63 46 45 40 39 38 36 35 32 31 24 15 0
429 */
430
431 for (n = 0; n < adapter->num_tx_queues; n++) {
432 tx_ring = adapter->tx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000433 pr_info("------------------------------------\n");
434 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
435 pr_info("------------------------------------\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000436 pr_info("T [desc] [address 63:0 ] [PlPOCIStDDM Ln] [bi->dma ] leng ntw timestamp bi->skb\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000437
438 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000439 const char *next_desc;
Alexander Duyck06034642011-08-26 07:44:22 +0000440 struct igb_tx_buffer *buffer_info;
Alexander Duyck601369062011-08-26 07:44:05 +0000441 tx_desc = IGB_TX_DESC(tx_ring, i);
Alexander Duyck06034642011-08-26 07:44:22 +0000442 buffer_info = &tx_ring->tx_buffer_info[i];
Taku Izumic97ec422010-04-27 14:39:30 +0000443 u0 = (struct my_u0 *)tx_desc;
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000444 if (i == tx_ring->next_to_use &&
445 i == tx_ring->next_to_clean)
446 next_desc = " NTC/U";
447 else if (i == tx_ring->next_to_use)
448 next_desc = " NTU";
449 else if (i == tx_ring->next_to_clean)
450 next_desc = " NTC";
451 else
452 next_desc = "";
453
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000454 pr_info("T [0x%03X] %016llX %016llX %016llX %04X %p %016llX %p%s\n",
455 i, le64_to_cpu(u0->a),
Taku Izumic97ec422010-04-27 14:39:30 +0000456 le64_to_cpu(u0->b),
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000457 (u64)dma_unmap_addr(buffer_info, dma),
458 dma_unmap_len(buffer_info, len),
Taku Izumic97ec422010-04-27 14:39:30 +0000459 buffer_info->next_to_watch,
460 (u64)buffer_info->time_stamp,
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000461 buffer_info->skb, next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000462
Emil Tantilovb6695882012-07-28 05:07:48 +0000463 if (netif_msg_pktdata(adapter) && buffer_info->skb)
Taku Izumic97ec422010-04-27 14:39:30 +0000464 print_hex_dump(KERN_INFO, "",
465 DUMP_PREFIX_ADDRESS,
Emil Tantilovb6695882012-07-28 05:07:48 +0000466 16, 1, buffer_info->skb->data,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000467 dma_unmap_len(buffer_info, len),
468 true);
Taku Izumic97ec422010-04-27 14:39:30 +0000469 }
470 }
471
472 /* Print RX Rings Summary */
473rx_ring_summary:
474 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000475 pr_info("Queue [NTU] [NTC]\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000476 for (n = 0; n < adapter->num_rx_queues; n++) {
477 rx_ring = adapter->rx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000478 pr_info(" %5d %5X %5X\n",
479 n, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumic97ec422010-04-27 14:39:30 +0000480 }
481
482 /* Print RX Rings */
483 if (!netif_msg_rx_status(adapter))
484 goto exit;
485
486 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
487
488 /* Advanced Receive Descriptor (Read) Format
489 * 63 1 0
490 * +-----------------------------------------------------+
491 * 0 | Packet Buffer Address [63:1] |A0/NSE|
492 * +----------------------------------------------+------+
493 * 8 | Header Buffer Address [63:1] | DD |
494 * +-----------------------------------------------------+
495 *
496 *
497 * Advanced Receive Descriptor (Write-Back) Format
498 *
499 * 63 48 47 32 31 30 21 20 17 16 4 3 0
500 * +------------------------------------------------------+
501 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
502 * | Checksum Ident | | | | Type | Type |
503 * +------------------------------------------------------+
504 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
505 * +------------------------------------------------------+
506 * 63 48 47 32 31 20 19 0
507 */
508
509 for (n = 0; n < adapter->num_rx_queues; n++) {
510 rx_ring = adapter->rx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000511 pr_info("------------------------------------\n");
512 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
513 pr_info("------------------------------------\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000514 pr_info("R [desc] [ PktBuf A0] [ HeadBuf DD] [bi->dma ] [bi->skb] <-- Adv Rx Read format\n");
515 pr_info("RWB[desc] [PcsmIpSHl PtRs] [vl er S cks ln] ---------------- [bi->skb] <-- Adv Rx Write-Back format\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000516
517 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000518 const char *next_desc;
Alexander Duyck06034642011-08-26 07:44:22 +0000519 struct igb_rx_buffer *buffer_info;
520 buffer_info = &rx_ring->rx_buffer_info[i];
Alexander Duyck601369062011-08-26 07:44:05 +0000521 rx_desc = IGB_RX_DESC(rx_ring, i);
Taku Izumic97ec422010-04-27 14:39:30 +0000522 u0 = (struct my_u0 *)rx_desc;
523 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000524
525 if (i == rx_ring->next_to_use)
526 next_desc = " NTU";
527 else if (i == rx_ring->next_to_clean)
528 next_desc = " NTC";
529 else
530 next_desc = "";
531
Taku Izumic97ec422010-04-27 14:39:30 +0000532 if (staterr & E1000_RXD_STAT_DD) {
533 /* Descriptor Done */
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000534 pr_info("%s[0x%03X] %016llX %016llX ---------------- %s\n",
535 "RWB", i,
Taku Izumic97ec422010-04-27 14:39:30 +0000536 le64_to_cpu(u0->a),
537 le64_to_cpu(u0->b),
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000538 next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000539 } else {
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000540 pr_info("%s[0x%03X] %016llX %016llX %016llX %s\n",
541 "R ", i,
Taku Izumic97ec422010-04-27 14:39:30 +0000542 le64_to_cpu(u0->a),
543 le64_to_cpu(u0->b),
544 (u64)buffer_info->dma,
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000545 next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000546
Emil Tantilovb6695882012-07-28 05:07:48 +0000547 if (netif_msg_pktdata(adapter) &&
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000548 buffer_info->dma && buffer_info->page) {
Alexander Duyck44390ca2011-08-26 07:43:38 +0000549 print_hex_dump(KERN_INFO, "",
550 DUMP_PREFIX_ADDRESS,
551 16, 1,
Emil Tantilovb6695882012-07-28 05:07:48 +0000552 page_address(buffer_info->page) +
553 buffer_info->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +0000554 IGB_RX_BUFSZ, true);
Taku Izumic97ec422010-04-27 14:39:30 +0000555 }
556 }
Taku Izumic97ec422010-04-27 14:39:30 +0000557 }
558 }
559
560exit:
561 return;
562}
563
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000564/**
565 * igb_get_i2c_data - Reads the I2C SDA data bit
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000566 * @hw: pointer to hardware structure
567 * @i2cctl: Current value of I2CCTL register
568 *
569 * Returns the I2C data bit value
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000570 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000571static int igb_get_i2c_data(void *data)
572{
573 struct igb_adapter *adapter = (struct igb_adapter *)data;
574 struct e1000_hw *hw = &adapter->hw;
575 s32 i2cctl = rd32(E1000_I2CPARAMS);
576
577 return ((i2cctl & E1000_I2C_DATA_IN) != 0);
578}
579
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000580/**
581 * igb_set_i2c_data - Sets the I2C data bit
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000582 * @data: pointer to hardware structure
583 * @state: I2C data value (0 or 1) to set
584 *
585 * Sets the I2C data bit
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000586 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000587static void igb_set_i2c_data(void *data, int state)
588{
589 struct igb_adapter *adapter = (struct igb_adapter *)data;
590 struct e1000_hw *hw = &adapter->hw;
591 s32 i2cctl = rd32(E1000_I2CPARAMS);
592
593 if (state)
594 i2cctl |= E1000_I2C_DATA_OUT;
595 else
596 i2cctl &= ~E1000_I2C_DATA_OUT;
597
598 i2cctl &= ~E1000_I2C_DATA_OE_N;
599 i2cctl |= E1000_I2C_CLK_OE_N;
600 wr32(E1000_I2CPARAMS, i2cctl);
601 wrfl();
602
603}
604
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000605/**
606 * igb_set_i2c_clk - Sets the I2C SCL clock
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000607 * @data: pointer to hardware structure
608 * @state: state to set clock
609 *
610 * Sets the I2C clock line to state
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000611 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000612static void igb_set_i2c_clk(void *data, int state)
613{
614 struct igb_adapter *adapter = (struct igb_adapter *)data;
615 struct e1000_hw *hw = &adapter->hw;
616 s32 i2cctl = rd32(E1000_I2CPARAMS);
617
618 if (state) {
619 i2cctl |= E1000_I2C_CLK_OUT;
620 i2cctl &= ~E1000_I2C_CLK_OE_N;
621 } else {
622 i2cctl &= ~E1000_I2C_CLK_OUT;
623 i2cctl &= ~E1000_I2C_CLK_OE_N;
624 }
625 wr32(E1000_I2CPARAMS, i2cctl);
626 wrfl();
627}
628
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000629/**
630 * igb_get_i2c_clk - Gets the I2C SCL clock state
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000631 * @data: pointer to hardware structure
632 *
633 * Gets the I2C clock state
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000634 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000635static int igb_get_i2c_clk(void *data)
636{
637 struct igb_adapter *adapter = (struct igb_adapter *)data;
638 struct e1000_hw *hw = &adapter->hw;
639 s32 i2cctl = rd32(E1000_I2CPARAMS);
640
641 return ((i2cctl & E1000_I2C_CLK_IN) != 0);
642}
643
644static const struct i2c_algo_bit_data igb_i2c_algo = {
645 .setsda = igb_set_i2c_data,
646 .setscl = igb_set_i2c_clk,
647 .getsda = igb_get_i2c_data,
648 .getscl = igb_get_i2c_clk,
649 .udelay = 5,
650 .timeout = 20,
651};
652
Auke Kok9d5c8242008-01-24 02:22:38 -0800653/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000654 * igb_get_hw_dev - return device
655 * @hw: pointer to hardware structure
656 *
657 * used by hardware layer to print debugging information
Auke Kok9d5c8242008-01-24 02:22:38 -0800658 **/
Alexander Duyckc0410762010-03-25 13:10:08 +0000659struct net_device *igb_get_hw_dev(struct e1000_hw *hw)
Auke Kok9d5c8242008-01-24 02:22:38 -0800660{
661 struct igb_adapter *adapter = hw->back;
Alexander Duyckc0410762010-03-25 13:10:08 +0000662 return adapter->netdev;
Auke Kok9d5c8242008-01-24 02:22:38 -0800663}
Patrick Ohly38c845c2009-02-12 05:03:41 +0000664
665/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000666 * igb_init_module - Driver Registration Routine
Auke Kok9d5c8242008-01-24 02:22:38 -0800667 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000668 * igb_init_module is the first routine called when the driver is
669 * loaded. All it does is register with the PCI subsystem.
Auke Kok9d5c8242008-01-24 02:22:38 -0800670 **/
671static int __init igb_init_module(void)
672{
673 int ret;
Carolyn Wyborny9005df32014-04-11 01:45:34 +0000674
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000675 pr_info("%s - version %s\n",
Auke Kok9d5c8242008-01-24 02:22:38 -0800676 igb_driver_string, igb_driver_version);
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000677 pr_info("%s\n", igb_copyright);
Auke Kok9d5c8242008-01-24 02:22:38 -0800678
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700679#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700680 dca_register_notify(&dca_notifier);
681#endif
Alexander Duyckbbd98fe2009-01-31 00:52:30 -0800682 ret = pci_register_driver(&igb_driver);
Auke Kok9d5c8242008-01-24 02:22:38 -0800683 return ret;
684}
685
686module_init(igb_init_module);
687
688/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000689 * igb_exit_module - Driver Exit Cleanup Routine
Auke Kok9d5c8242008-01-24 02:22:38 -0800690 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000691 * igb_exit_module is called just before the driver is removed
692 * from memory.
Auke Kok9d5c8242008-01-24 02:22:38 -0800693 **/
694static void __exit igb_exit_module(void)
695{
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700696#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700697 dca_unregister_notify(&dca_notifier);
698#endif
Auke Kok9d5c8242008-01-24 02:22:38 -0800699 pci_unregister_driver(&igb_driver);
700}
701
702module_exit(igb_exit_module);
703
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800704#define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1))
705/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000706 * igb_cache_ring_register - Descriptor ring to register mapping
707 * @adapter: board private structure to initialize
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800708 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000709 * Once we know the feature-set enabled for the device, we'll cache
710 * the register offset the descriptor ring is assigned to.
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800711 **/
712static void igb_cache_ring_register(struct igb_adapter *adapter)
713{
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000714 int i = 0, j = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +0000715 u32 rbase_offset = adapter->vfs_allocated_count;
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800716
717 switch (adapter->hw.mac.type) {
718 case e1000_82576:
719 /* The queues are allocated for virtualization such that VF 0
720 * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc.
721 * In order to avoid collision we start at the first free queue
722 * and continue consuming queues in the same sequence
723 */
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000724 if (adapter->vfs_allocated_count) {
Alexander Duycka99955f2009-11-12 18:37:19 +0000725 for (; i < adapter->rss_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +0000726 adapter->rx_ring[i]->reg_idx = rbase_offset +
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000727 Q_IDX_82576(i);
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000728 }
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800729 case e1000_82575:
Alexander Duyck55cac242009-11-19 12:42:21 +0000730 case e1000_82580:
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +0000731 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +0000732 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +0000733 case e1000_i210:
734 case e1000_i211:
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800735 default:
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000736 for (; i < adapter->num_rx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +0000737 adapter->rx_ring[i]->reg_idx = rbase_offset + i;
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000738 for (; j < adapter->num_tx_queues; j++)
Alexander Duyck3025a442010-02-17 01:02:39 +0000739 adapter->tx_ring[j]->reg_idx = rbase_offset + j;
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800740 break;
741 }
742}
743
Fujinaka, Todd22a8b292014-03-13 04:29:01 +0000744u32 igb_rd32(struct e1000_hw *hw, u32 reg)
745{
746 struct igb_adapter *igb = container_of(hw, struct igb_adapter, hw);
747 u8 __iomem *hw_addr = ACCESS_ONCE(hw->hw_addr);
748 u32 value = 0;
749
750 if (E1000_REMOVED(hw_addr))
751 return ~value;
752
753 value = readl(&hw_addr[reg]);
754
755 /* reads should not return all F's */
756 if (!(~value) && (!reg || !(~readl(hw_addr)))) {
757 struct net_device *netdev = igb->netdev;
758 hw->hw_addr = NULL;
759 netif_device_detach(netdev);
760 netdev_err(netdev, "PCIe link lost, device now detached\n");
761 }
762
763 return value;
764}
765
Alexander Duyck4be000c2011-08-26 07:45:52 +0000766/**
767 * igb_write_ivar - configure ivar for given MSI-X vector
768 * @hw: pointer to the HW structure
769 * @msix_vector: vector number we are allocating to a given ring
770 * @index: row index of IVAR register to write within IVAR table
771 * @offset: column offset of in IVAR, should be multiple of 8
772 *
773 * This function is intended to handle the writing of the IVAR register
774 * for adapters 82576 and newer. The IVAR table consists of 2 columns,
775 * each containing an cause allocation for an Rx and Tx ring, and a
776 * variable number of rows depending on the number of queues supported.
777 **/
778static void igb_write_ivar(struct e1000_hw *hw, int msix_vector,
779 int index, int offset)
780{
781 u32 ivar = array_rd32(E1000_IVAR0, index);
782
783 /* clear any bits that are currently set */
784 ivar &= ~((u32)0xFF << offset);
785
786 /* write vector and valid bit */
787 ivar |= (msix_vector | E1000_IVAR_VALID) << offset;
788
789 array_wr32(E1000_IVAR0, index, ivar);
790}
791
Auke Kok9d5c8242008-01-24 02:22:38 -0800792#define IGB_N0_QUEUE -1
Alexander Duyck047e0032009-10-27 15:49:27 +0000793static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -0800794{
Alexander Duyck047e0032009-10-27 15:49:27 +0000795 struct igb_adapter *adapter = q_vector->adapter;
Auke Kok9d5c8242008-01-24 02:22:38 -0800796 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck047e0032009-10-27 15:49:27 +0000797 int rx_queue = IGB_N0_QUEUE;
798 int tx_queue = IGB_N0_QUEUE;
Alexander Duyck4be000c2011-08-26 07:45:52 +0000799 u32 msixbm = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +0000800
Alexander Duyck0ba82992011-08-26 07:45:47 +0000801 if (q_vector->rx.ring)
802 rx_queue = q_vector->rx.ring->reg_idx;
803 if (q_vector->tx.ring)
804 tx_queue = q_vector->tx.ring->reg_idx;
Alexander Duyck2d064c02008-07-08 15:10:12 -0700805
806 switch (hw->mac.type) {
807 case e1000_82575:
Auke Kok9d5c8242008-01-24 02:22:38 -0800808 /* The 82575 assigns vectors using a bitmask, which matches the
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000809 * bitmask for the EICR/EIMS/EIMC registers. To assign one
810 * or more queues to a vector, we write the appropriate bits
811 * into the MSIXBM register for that vector.
812 */
Alexander Duyck047e0032009-10-27 15:49:27 +0000813 if (rx_queue > IGB_N0_QUEUE)
Auke Kok9d5c8242008-01-24 02:22:38 -0800814 msixbm = E1000_EICR_RX_QUEUE0 << rx_queue;
Alexander Duyck047e0032009-10-27 15:49:27 +0000815 if (tx_queue > IGB_N0_QUEUE)
Auke Kok9d5c8242008-01-24 02:22:38 -0800816 msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue;
Carolyn Wybornycd14ef52013-12-10 07:58:34 +0000817 if (!(adapter->flags & IGB_FLAG_HAS_MSIX) && msix_vector == 0)
Alexander Duyckfeeb2722010-02-03 21:59:51 +0000818 msixbm |= E1000_EIMS_OTHER;
Auke Kok9d5c8242008-01-24 02:22:38 -0800819 array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
Alexander Duyck047e0032009-10-27 15:49:27 +0000820 q_vector->eims_value = msixbm;
Alexander Duyck2d064c02008-07-08 15:10:12 -0700821 break;
822 case e1000_82576:
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000823 /* 82576 uses a table that essentially consists of 2 columns
Alexander Duyck4be000c2011-08-26 07:45:52 +0000824 * with 8 rows. The ordering is column-major so we use the
825 * lower 3 bits as the row index, and the 4th bit as the
826 * column offset.
827 */
828 if (rx_queue > IGB_N0_QUEUE)
829 igb_write_ivar(hw, msix_vector,
830 rx_queue & 0x7,
831 (rx_queue & 0x8) << 1);
832 if (tx_queue > IGB_N0_QUEUE)
833 igb_write_ivar(hw, msix_vector,
834 tx_queue & 0x7,
835 ((tx_queue & 0x8) << 1) + 8);
Alexander Duyck047e0032009-10-27 15:49:27 +0000836 q_vector->eims_value = 1 << msix_vector;
Alexander Duyck2d064c02008-07-08 15:10:12 -0700837 break;
Alexander Duyck55cac242009-11-19 12:42:21 +0000838 case e1000_82580:
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +0000839 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +0000840 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +0000841 case e1000_i210:
842 case e1000_i211:
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000843 /* On 82580 and newer adapters the scheme is similar to 82576
Alexander Duyck4be000c2011-08-26 07:45:52 +0000844 * however instead of ordering column-major we have things
845 * ordered row-major. So we traverse the table by using
846 * bit 0 as the column offset, and the remaining bits as the
847 * row index.
848 */
849 if (rx_queue > IGB_N0_QUEUE)
850 igb_write_ivar(hw, msix_vector,
851 rx_queue >> 1,
852 (rx_queue & 0x1) << 4);
853 if (tx_queue > IGB_N0_QUEUE)
854 igb_write_ivar(hw, msix_vector,
855 tx_queue >> 1,
856 ((tx_queue & 0x1) << 4) + 8);
Alexander Duyck55cac242009-11-19 12:42:21 +0000857 q_vector->eims_value = 1 << msix_vector;
858 break;
Alexander Duyck2d064c02008-07-08 15:10:12 -0700859 default:
860 BUG();
861 break;
862 }
Alexander Duyck26b39272010-02-17 01:00:41 +0000863
864 /* add q_vector eims value to global eims_enable_mask */
865 adapter->eims_enable_mask |= q_vector->eims_value;
866
867 /* configure q_vector to set itr on first interrupt */
868 q_vector->set_itr = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -0800869}
870
871/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000872 * igb_configure_msix - Configure MSI-X hardware
873 * @adapter: board private structure to initialize
Auke Kok9d5c8242008-01-24 02:22:38 -0800874 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000875 * igb_configure_msix sets up the hardware to properly
876 * generate MSI-X interrupts.
Auke Kok9d5c8242008-01-24 02:22:38 -0800877 **/
878static void igb_configure_msix(struct igb_adapter *adapter)
879{
880 u32 tmp;
881 int i, vector = 0;
882 struct e1000_hw *hw = &adapter->hw;
883
884 adapter->eims_enable_mask = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -0800885
886 /* set vector for other causes, i.e. link changes */
Alexander Duyck2d064c02008-07-08 15:10:12 -0700887 switch (hw->mac.type) {
888 case e1000_82575:
Auke Kok9d5c8242008-01-24 02:22:38 -0800889 tmp = rd32(E1000_CTRL_EXT);
890 /* enable MSI-X PBA support*/
891 tmp |= E1000_CTRL_EXT_PBA_CLR;
892
893 /* Auto-Mask interrupts upon ICR read. */
894 tmp |= E1000_CTRL_EXT_EIAME;
895 tmp |= E1000_CTRL_EXT_IRCA;
896
897 wr32(E1000_CTRL_EXT, tmp);
Alexander Duyck047e0032009-10-27 15:49:27 +0000898
899 /* enable msix_other interrupt */
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000900 array_wr32(E1000_MSIXBM(0), vector++, E1000_EIMS_OTHER);
PJ Waskiewicz844290e2008-06-27 11:00:39 -0700901 adapter->eims_other = E1000_EIMS_OTHER;
Auke Kok9d5c8242008-01-24 02:22:38 -0800902
Alexander Duyck2d064c02008-07-08 15:10:12 -0700903 break;
904
905 case e1000_82576:
Alexander Duyck55cac242009-11-19 12:42:21 +0000906 case e1000_82580:
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +0000907 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +0000908 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +0000909 case e1000_i210:
910 case e1000_i211:
Alexander Duyck047e0032009-10-27 15:49:27 +0000911 /* Turn on MSI-X capability first, or our settings
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000912 * won't stick. And it will take days to debug.
913 */
Alexander Duyck047e0032009-10-27 15:49:27 +0000914 wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE |
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000915 E1000_GPIE_PBA | E1000_GPIE_EIAME |
916 E1000_GPIE_NSICR);
Alexander Duyck2d064c02008-07-08 15:10:12 -0700917
Alexander Duyck047e0032009-10-27 15:49:27 +0000918 /* enable msix_other interrupt */
919 adapter->eims_other = 1 << vector;
920 tmp = (vector++ | E1000_IVAR_VALID) << 8;
921
922 wr32(E1000_IVAR_MISC, tmp);
Alexander Duyck2d064c02008-07-08 15:10:12 -0700923 break;
924 default:
925 /* do nothing, since nothing else supports MSI-X */
926 break;
927 } /* switch (hw->mac.type) */
Alexander Duyck047e0032009-10-27 15:49:27 +0000928
929 adapter->eims_enable_mask |= adapter->eims_other;
930
Alexander Duyck26b39272010-02-17 01:00:41 +0000931 for (i = 0; i < adapter->num_q_vectors; i++)
932 igb_assign_vector(adapter->q_vector[i], vector++);
Alexander Duyck047e0032009-10-27 15:49:27 +0000933
Auke Kok9d5c8242008-01-24 02:22:38 -0800934 wrfl();
935}
936
937/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000938 * igb_request_msix - Initialize MSI-X interrupts
939 * @adapter: board private structure to initialize
Auke Kok9d5c8242008-01-24 02:22:38 -0800940 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000941 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
942 * kernel.
Auke Kok9d5c8242008-01-24 02:22:38 -0800943 **/
944static int igb_request_msix(struct igb_adapter *adapter)
945{
946 struct net_device *netdev = adapter->netdev;
Alexander Duyck047e0032009-10-27 15:49:27 +0000947 struct e1000_hw *hw = &adapter->hw;
Stefan Assmann52285b72012-12-04 06:00:17 +0000948 int i, err = 0, vector = 0, free_vector = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -0800949
Auke Kok9d5c8242008-01-24 02:22:38 -0800950 err = request_irq(adapter->msix_entries[vector].vector,
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000951 igb_msix_other, 0, netdev->name, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -0800952 if (err)
Stefan Assmann52285b72012-12-04 06:00:17 +0000953 goto err_out;
Alexander Duyck047e0032009-10-27 15:49:27 +0000954
955 for (i = 0; i < adapter->num_q_vectors; i++) {
956 struct igb_q_vector *q_vector = adapter->q_vector[i];
957
Stefan Assmann52285b72012-12-04 06:00:17 +0000958 vector++;
959
Alexander Duyck047e0032009-10-27 15:49:27 +0000960 q_vector->itr_register = hw->hw_addr + E1000_EITR(vector);
961
Alexander Duyck0ba82992011-08-26 07:45:47 +0000962 if (q_vector->rx.ring && q_vector->tx.ring)
Alexander Duyck047e0032009-10-27 15:49:27 +0000963 sprintf(q_vector->name, "%s-TxRx-%u", netdev->name,
Alexander Duyck0ba82992011-08-26 07:45:47 +0000964 q_vector->rx.ring->queue_index);
965 else if (q_vector->tx.ring)
Alexander Duyck047e0032009-10-27 15:49:27 +0000966 sprintf(q_vector->name, "%s-tx-%u", netdev->name,
Alexander Duyck0ba82992011-08-26 07:45:47 +0000967 q_vector->tx.ring->queue_index);
968 else if (q_vector->rx.ring)
Alexander Duyck047e0032009-10-27 15:49:27 +0000969 sprintf(q_vector->name, "%s-rx-%u", netdev->name,
Alexander Duyck0ba82992011-08-26 07:45:47 +0000970 q_vector->rx.ring->queue_index);
Alexander Duyck047e0032009-10-27 15:49:27 +0000971 else
972 sprintf(q_vector->name, "%s-unused", netdev->name);
973
974 err = request_irq(adapter->msix_entries[vector].vector,
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000975 igb_msix_ring, 0, q_vector->name,
976 q_vector);
Alexander Duyck047e0032009-10-27 15:49:27 +0000977 if (err)
Stefan Assmann52285b72012-12-04 06:00:17 +0000978 goto err_free;
Alexander Duyck047e0032009-10-27 15:49:27 +0000979 }
Auke Kok9d5c8242008-01-24 02:22:38 -0800980
Auke Kok9d5c8242008-01-24 02:22:38 -0800981 igb_configure_msix(adapter);
982 return 0;
Stefan Assmann52285b72012-12-04 06:00:17 +0000983
984err_free:
985 /* free already assigned IRQs */
986 free_irq(adapter->msix_entries[free_vector++].vector, adapter);
987
988 vector--;
989 for (i = 0; i < vector; i++) {
990 free_irq(adapter->msix_entries[free_vector++].vector,
991 adapter->q_vector[i]);
992 }
993err_out:
Auke Kok9d5c8242008-01-24 02:22:38 -0800994 return err;
995}
996
Alexander Duyck047e0032009-10-27 15:49:27 +0000997/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000998 * igb_free_q_vector - Free memory allocated for specific interrupt vector
999 * @adapter: board private structure to initialize
1000 * @v_idx: Index of vector to be freed
Alexander Duyck5536d212012-09-25 00:31:17 +00001001 *
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001002 * This function frees the memory allocated to the q_vector.
Alexander Duyck5536d212012-09-25 00:31:17 +00001003 **/
1004static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx)
1005{
1006 struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
1007
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001008 adapter->q_vector[v_idx] = NULL;
1009
1010 /* igb_get_stats64() might access the rings on this vector,
1011 * we must wait a grace period before freeing it.
1012 */
1013 kfree_rcu(q_vector, rcu);
1014}
1015
1016/**
1017 * igb_reset_q_vector - Reset config for interrupt vector
1018 * @adapter: board private structure to initialize
1019 * @v_idx: Index of vector to be reset
1020 *
1021 * If NAPI is enabled it will delete any references to the
1022 * NAPI struct. This is preparation for igb_free_q_vector.
1023 **/
1024static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx)
1025{
1026 struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
1027
Christoph Paaschcb06d102014-03-21 03:48:19 -07001028 /* Coming from igb_set_interrupt_capability, the vectors are not yet
1029 * allocated. So, q_vector is NULL so we should stop here.
1030 */
1031 if (!q_vector)
1032 return;
1033
Alexander Duyck5536d212012-09-25 00:31:17 +00001034 if (q_vector->tx.ring)
1035 adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL;
1036
1037 if (q_vector->rx.ring)
1038 adapter->tx_ring[q_vector->rx.ring->queue_index] = NULL;
1039
Alexander Duyck5536d212012-09-25 00:31:17 +00001040 netif_napi_del(&q_vector->napi);
1041
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001042}
1043
1044static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
1045{
1046 int v_idx = adapter->num_q_vectors;
1047
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001048 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001049 pci_disable_msix(adapter->pdev);
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001050 else if (adapter->flags & IGB_FLAG_HAS_MSI)
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001051 pci_disable_msi(adapter->pdev);
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001052
1053 while (v_idx--)
1054 igb_reset_q_vector(adapter, v_idx);
Alexander Duyck5536d212012-09-25 00:31:17 +00001055}
1056
1057/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001058 * igb_free_q_vectors - Free memory allocated for interrupt vectors
1059 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001060 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001061 * This function frees the memory allocated to the q_vectors. In addition if
1062 * NAPI is enabled it will delete any references to the NAPI struct prior
1063 * to freeing the q_vector.
Alexander Duyck047e0032009-10-27 15:49:27 +00001064 **/
1065static void igb_free_q_vectors(struct igb_adapter *adapter)
1066{
Alexander Duyck5536d212012-09-25 00:31:17 +00001067 int v_idx = adapter->num_q_vectors;
Alexander Duyck047e0032009-10-27 15:49:27 +00001068
Alexander Duyck5536d212012-09-25 00:31:17 +00001069 adapter->num_tx_queues = 0;
1070 adapter->num_rx_queues = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +00001071 adapter->num_q_vectors = 0;
Alexander Duyck5536d212012-09-25 00:31:17 +00001072
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001073 while (v_idx--) {
1074 igb_reset_q_vector(adapter, v_idx);
Alexander Duyck5536d212012-09-25 00:31:17 +00001075 igb_free_q_vector(adapter, v_idx);
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001076 }
Alexander Duyck047e0032009-10-27 15:49:27 +00001077}
1078
1079/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001080 * igb_clear_interrupt_scheme - reset the device to a state of no interrupts
1081 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001082 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001083 * This function resets the device so that it has 0 Rx queues, Tx queues, and
1084 * MSI-X interrupts allocated.
Alexander Duyck047e0032009-10-27 15:49:27 +00001085 */
1086static void igb_clear_interrupt_scheme(struct igb_adapter *adapter)
1087{
Alexander Duyck047e0032009-10-27 15:49:27 +00001088 igb_free_q_vectors(adapter);
1089 igb_reset_interrupt_capability(adapter);
1090}
Auke Kok9d5c8242008-01-24 02:22:38 -08001091
1092/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001093 * igb_set_interrupt_capability - set MSI or MSI-X if supported
1094 * @adapter: board private structure to initialize
1095 * @msix: boolean value of MSIX capability
Auke Kok9d5c8242008-01-24 02:22:38 -08001096 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001097 * Attempt to configure interrupts using the best available
1098 * capabilities of the hardware and kernel.
Auke Kok9d5c8242008-01-24 02:22:38 -08001099 **/
Stefan Assmann53c7d062012-12-04 06:00:12 +00001100static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix)
Auke Kok9d5c8242008-01-24 02:22:38 -08001101{
1102 int err;
1103 int numvecs, i;
1104
Stefan Assmann53c7d062012-12-04 06:00:12 +00001105 if (!msix)
1106 goto msi_only;
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001107 adapter->flags |= IGB_FLAG_HAS_MSIX;
Stefan Assmann53c7d062012-12-04 06:00:12 +00001108
Alexander Duyck83b71802009-02-06 23:15:45 +00001109 /* Number of supported queues. */
Alexander Duycka99955f2009-11-12 18:37:19 +00001110 adapter->num_rx_queues = adapter->rss_queues;
Greg Rose5fa85172010-07-01 13:38:16 +00001111 if (adapter->vfs_allocated_count)
1112 adapter->num_tx_queues = 1;
1113 else
1114 adapter->num_tx_queues = adapter->rss_queues;
Alexander Duyck83b71802009-02-06 23:15:45 +00001115
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001116 /* start with one vector for every Rx queue */
Alexander Duyck047e0032009-10-27 15:49:27 +00001117 numvecs = adapter->num_rx_queues;
1118
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001119 /* if Tx handler is separate add 1 for every Tx queue */
Alexander Duycka99955f2009-11-12 18:37:19 +00001120 if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS))
1121 numvecs += adapter->num_tx_queues;
Alexander Duyck047e0032009-10-27 15:49:27 +00001122
1123 /* store the number of vectors reserved for queues */
1124 adapter->num_q_vectors = numvecs;
1125
1126 /* add 1 vector for link status interrupts */
1127 numvecs++;
Auke Kok9d5c8242008-01-24 02:22:38 -08001128 for (i = 0; i < numvecs; i++)
1129 adapter->msix_entries[i].entry = i;
1130
Alexander Gordeev479d02d2014-02-18 11:11:43 +01001131 err = pci_enable_msix_range(adapter->pdev,
1132 adapter->msix_entries,
1133 numvecs,
1134 numvecs);
1135 if (err > 0)
Alexander Duyck0c2cc022012-09-25 00:31:22 +00001136 return;
Auke Kok9d5c8242008-01-24 02:22:38 -08001137
1138 igb_reset_interrupt_capability(adapter);
1139
1140 /* If we can't do MSI-X, try MSI */
1141msi_only:
Christoph Paaschb7093232014-03-21 04:02:09 -07001142 adapter->flags &= ~IGB_FLAG_HAS_MSIX;
Alexander Duyck2a3abf62009-04-07 14:37:52 +00001143#ifdef CONFIG_PCI_IOV
1144 /* disable SR-IOV for non MSI-X configurations */
1145 if (adapter->vf_data) {
1146 struct e1000_hw *hw = &adapter->hw;
1147 /* disable iov and allow time for transactions to clear */
1148 pci_disable_sriov(adapter->pdev);
1149 msleep(500);
1150
1151 kfree(adapter->vf_data);
1152 adapter->vf_data = NULL;
1153 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
Jesse Brandeburg945a5152011-07-20 00:56:21 +00001154 wrfl();
Alexander Duyck2a3abf62009-04-07 14:37:52 +00001155 msleep(100);
1156 dev_info(&adapter->pdev->dev, "IOV Disabled\n");
1157 }
1158#endif
Alexander Duyck4fc82ad2009-10-27 23:45:42 +00001159 adapter->vfs_allocated_count = 0;
Alexander Duycka99955f2009-11-12 18:37:19 +00001160 adapter->rss_queues = 1;
Alexander Duyck4fc82ad2009-10-27 23:45:42 +00001161 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
Auke Kok9d5c8242008-01-24 02:22:38 -08001162 adapter->num_rx_queues = 1;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07001163 adapter->num_tx_queues = 1;
Alexander Duyck047e0032009-10-27 15:49:27 +00001164 adapter->num_q_vectors = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08001165 if (!pci_enable_msi(adapter->pdev))
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001166 adapter->flags |= IGB_FLAG_HAS_MSI;
Auke Kok9d5c8242008-01-24 02:22:38 -08001167}
1168
Alexander Duyck5536d212012-09-25 00:31:17 +00001169static void igb_add_ring(struct igb_ring *ring,
1170 struct igb_ring_container *head)
1171{
1172 head->ring = ring;
1173 head->count++;
1174}
1175
1176/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001177 * igb_alloc_q_vector - Allocate memory for a single interrupt vector
1178 * @adapter: board private structure to initialize
1179 * @v_count: q_vectors allocated on adapter, used for ring interleaving
1180 * @v_idx: index of vector in adapter struct
1181 * @txr_count: total number of Tx rings to allocate
1182 * @txr_idx: index of first Tx ring to allocate
1183 * @rxr_count: total number of Rx rings to allocate
1184 * @rxr_idx: index of first Rx ring to allocate
Alexander Duyck5536d212012-09-25 00:31:17 +00001185 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001186 * We allocate one q_vector. If allocation fails we return -ENOMEM.
Alexander Duyck5536d212012-09-25 00:31:17 +00001187 **/
1188static int igb_alloc_q_vector(struct igb_adapter *adapter,
1189 int v_count, int v_idx,
1190 int txr_count, int txr_idx,
1191 int rxr_count, int rxr_idx)
1192{
1193 struct igb_q_vector *q_vector;
1194 struct igb_ring *ring;
1195 int ring_count, size;
1196
1197 /* igb only supports 1 Tx and/or 1 Rx queue per vector */
1198 if (txr_count > 1 || rxr_count > 1)
1199 return -ENOMEM;
1200
1201 ring_count = txr_count + rxr_count;
1202 size = sizeof(struct igb_q_vector) +
1203 (sizeof(struct igb_ring) * ring_count);
1204
1205 /* allocate q_vector and rings */
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001206 q_vector = adapter->q_vector[v_idx];
1207 if (!q_vector)
1208 q_vector = kzalloc(size, GFP_KERNEL);
Alexander Duyck5536d212012-09-25 00:31:17 +00001209 if (!q_vector)
1210 return -ENOMEM;
1211
1212 /* initialize NAPI */
1213 netif_napi_add(adapter->netdev, &q_vector->napi,
1214 igb_poll, 64);
1215
1216 /* tie q_vector and adapter together */
1217 adapter->q_vector[v_idx] = q_vector;
1218 q_vector->adapter = adapter;
1219
1220 /* initialize work limits */
1221 q_vector->tx.work_limit = adapter->tx_work_limit;
1222
1223 /* initialize ITR configuration */
1224 q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0);
1225 q_vector->itr_val = IGB_START_ITR;
1226
1227 /* initialize pointer to rings */
1228 ring = q_vector->ring;
1229
Alexander Duyck4e2276672013-02-12 02:31:01 +00001230 /* intialize ITR */
1231 if (rxr_count) {
1232 /* rx or rx/tx vector */
1233 if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3)
1234 q_vector->itr_val = adapter->rx_itr_setting;
1235 } else {
1236 /* tx only vector */
1237 if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3)
1238 q_vector->itr_val = adapter->tx_itr_setting;
1239 }
1240
Alexander Duyck5536d212012-09-25 00:31:17 +00001241 if (txr_count) {
1242 /* assign generic ring traits */
1243 ring->dev = &adapter->pdev->dev;
1244 ring->netdev = adapter->netdev;
1245
1246 /* configure backlink on ring */
1247 ring->q_vector = q_vector;
1248
1249 /* update q_vector Tx values */
1250 igb_add_ring(ring, &q_vector->tx);
1251
1252 /* For 82575, context index must be unique per ring. */
1253 if (adapter->hw.mac.type == e1000_82575)
1254 set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags);
1255
1256 /* apply Tx specific ring traits */
1257 ring->count = adapter->tx_ring_count;
1258 ring->queue_index = txr_idx;
1259
John Stultz827da442013-10-07 15:51:58 -07001260 u64_stats_init(&ring->tx_syncp);
1261 u64_stats_init(&ring->tx_syncp2);
1262
Alexander Duyck5536d212012-09-25 00:31:17 +00001263 /* assign ring to adapter */
1264 adapter->tx_ring[txr_idx] = ring;
1265
1266 /* push pointer to next ring */
1267 ring++;
1268 }
1269
1270 if (rxr_count) {
1271 /* assign generic ring traits */
1272 ring->dev = &adapter->pdev->dev;
1273 ring->netdev = adapter->netdev;
1274
1275 /* configure backlink on ring */
1276 ring->q_vector = q_vector;
1277
1278 /* update q_vector Rx values */
1279 igb_add_ring(ring, &q_vector->rx);
1280
1281 /* set flag indicating ring supports SCTP checksum offload */
1282 if (adapter->hw.mac.type >= e1000_82576)
1283 set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags);
1284
Carolyn Wybornye52c0f92014-04-11 01:46:06 +00001285 /* On i350, i354, i210, and i211, loopback VLAN packets
Alexander Duyck5536d212012-09-25 00:31:17 +00001286 * have the tag byte-swapped.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001287 */
Alexander Duyck5536d212012-09-25 00:31:17 +00001288 if (adapter->hw.mac.type >= e1000_i350)
1289 set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags);
1290
1291 /* apply Rx specific ring traits */
1292 ring->count = adapter->rx_ring_count;
1293 ring->queue_index = rxr_idx;
1294
John Stultz827da442013-10-07 15:51:58 -07001295 u64_stats_init(&ring->rx_syncp);
1296
Alexander Duyck5536d212012-09-25 00:31:17 +00001297 /* assign ring to adapter */
1298 adapter->rx_ring[rxr_idx] = ring;
1299 }
1300
1301 return 0;
1302}
1303
1304
Auke Kok9d5c8242008-01-24 02:22:38 -08001305/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001306 * igb_alloc_q_vectors - Allocate memory for interrupt vectors
1307 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001308 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001309 * We allocate one q_vector per queue interrupt. If allocation fails we
1310 * return -ENOMEM.
Alexander Duyck047e0032009-10-27 15:49:27 +00001311 **/
1312static int igb_alloc_q_vectors(struct igb_adapter *adapter)
1313{
Alexander Duyck5536d212012-09-25 00:31:17 +00001314 int q_vectors = adapter->num_q_vectors;
1315 int rxr_remaining = adapter->num_rx_queues;
1316 int txr_remaining = adapter->num_tx_queues;
1317 int rxr_idx = 0, txr_idx = 0, v_idx = 0;
1318 int err;
Alexander Duyck047e0032009-10-27 15:49:27 +00001319
Alexander Duyck5536d212012-09-25 00:31:17 +00001320 if (q_vectors >= (rxr_remaining + txr_remaining)) {
1321 for (; rxr_remaining; v_idx++) {
1322 err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
1323 0, 0, 1, rxr_idx);
1324
1325 if (err)
1326 goto err_out;
1327
1328 /* update counts and index */
1329 rxr_remaining--;
1330 rxr_idx++;
1331 }
1332 }
1333
1334 for (; v_idx < q_vectors; v_idx++) {
1335 int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx);
1336 int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001337
Alexander Duyck5536d212012-09-25 00:31:17 +00001338 err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
1339 tqpv, txr_idx, rqpv, rxr_idx);
1340
1341 if (err)
Alexander Duyck047e0032009-10-27 15:49:27 +00001342 goto err_out;
Alexander Duyck5536d212012-09-25 00:31:17 +00001343
1344 /* update counts and index */
1345 rxr_remaining -= rqpv;
1346 txr_remaining -= tqpv;
1347 rxr_idx++;
1348 txr_idx++;
Alexander Duyck047e0032009-10-27 15:49:27 +00001349 }
Alexander Duyck81c2fc22011-08-26 07:45:20 +00001350
Alexander Duyck047e0032009-10-27 15:49:27 +00001351 return 0;
1352
1353err_out:
Alexander Duyck5536d212012-09-25 00:31:17 +00001354 adapter->num_tx_queues = 0;
1355 adapter->num_rx_queues = 0;
1356 adapter->num_q_vectors = 0;
1357
1358 while (v_idx--)
1359 igb_free_q_vector(adapter, v_idx);
1360
Alexander Duyck047e0032009-10-27 15:49:27 +00001361 return -ENOMEM;
1362}
1363
Alexander Duyck047e0032009-10-27 15:49:27 +00001364/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001365 * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors
1366 * @adapter: board private structure to initialize
1367 * @msix: boolean value of MSIX capability
Alexander Duyck047e0032009-10-27 15:49:27 +00001368 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001369 * This function initializes the interrupts and allocates all of the queues.
Alexander Duyck047e0032009-10-27 15:49:27 +00001370 **/
Stefan Assmann53c7d062012-12-04 06:00:12 +00001371static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix)
Alexander Duyck047e0032009-10-27 15:49:27 +00001372{
1373 struct pci_dev *pdev = adapter->pdev;
1374 int err;
1375
Stefan Assmann53c7d062012-12-04 06:00:12 +00001376 igb_set_interrupt_capability(adapter, msix);
Alexander Duyck047e0032009-10-27 15:49:27 +00001377
1378 err = igb_alloc_q_vectors(adapter);
1379 if (err) {
1380 dev_err(&pdev->dev, "Unable to allocate memory for vectors\n");
1381 goto err_alloc_q_vectors;
1382 }
1383
Alexander Duyck5536d212012-09-25 00:31:17 +00001384 igb_cache_ring_register(adapter);
Alexander Duyck047e0032009-10-27 15:49:27 +00001385
1386 return 0;
Alexander Duyck5536d212012-09-25 00:31:17 +00001387
Alexander Duyck047e0032009-10-27 15:49:27 +00001388err_alloc_q_vectors:
1389 igb_reset_interrupt_capability(adapter);
1390 return err;
1391}
1392
1393/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001394 * igb_request_irq - initialize interrupts
1395 * @adapter: board private structure to initialize
Auke Kok9d5c8242008-01-24 02:22:38 -08001396 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001397 * Attempts to configure interrupts using the best available
1398 * capabilities of the hardware and kernel.
Auke Kok9d5c8242008-01-24 02:22:38 -08001399 **/
1400static int igb_request_irq(struct igb_adapter *adapter)
1401{
1402 struct net_device *netdev = adapter->netdev;
Alexander Duyck047e0032009-10-27 15:49:27 +00001403 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08001404 int err = 0;
1405
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001406 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001407 err = igb_request_msix(adapter);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001408 if (!err)
Auke Kok9d5c8242008-01-24 02:22:38 -08001409 goto request_done;
Auke Kok9d5c8242008-01-24 02:22:38 -08001410 /* fall back to MSI */
Alexander Duyck5536d212012-09-25 00:31:17 +00001411 igb_free_all_tx_resources(adapter);
1412 igb_free_all_rx_resources(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001413
Alexander Duyck047e0032009-10-27 15:49:27 +00001414 igb_clear_interrupt_scheme(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001415 err = igb_init_interrupt_scheme(adapter, false);
1416 if (err)
Alexander Duyck047e0032009-10-27 15:49:27 +00001417 goto request_done;
Stefan Assmann53c7d062012-12-04 06:00:12 +00001418
Alexander Duyck047e0032009-10-27 15:49:27 +00001419 igb_setup_all_tx_resources(adapter);
1420 igb_setup_all_rx_resources(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001421 igb_configure(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001422 }
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001423
Alexander Duyckc74d5882011-08-26 07:46:45 +00001424 igb_assign_vector(adapter->q_vector[0], 0);
1425
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001426 if (adapter->flags & IGB_FLAG_HAS_MSI) {
Alexander Duyckc74d5882011-08-26 07:46:45 +00001427 err = request_irq(pdev->irq, igb_intr_msi, 0,
Alexander Duyck047e0032009-10-27 15:49:27 +00001428 netdev->name, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001429 if (!err)
1430 goto request_done;
Alexander Duyck047e0032009-10-27 15:49:27 +00001431
Auke Kok9d5c8242008-01-24 02:22:38 -08001432 /* fall back to legacy interrupts */
1433 igb_reset_interrupt_capability(adapter);
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001434 adapter->flags &= ~IGB_FLAG_HAS_MSI;
Auke Kok9d5c8242008-01-24 02:22:38 -08001435 }
1436
Alexander Duyckc74d5882011-08-26 07:46:45 +00001437 err = request_irq(pdev->irq, igb_intr, IRQF_SHARED,
Alexander Duyck047e0032009-10-27 15:49:27 +00001438 netdev->name, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001439
Andy Gospodarek6cb5e572008-02-15 14:05:25 -08001440 if (err)
Alexander Duyckc74d5882011-08-26 07:46:45 +00001441 dev_err(&pdev->dev, "Error %d getting interrupt\n",
Auke Kok9d5c8242008-01-24 02:22:38 -08001442 err);
Auke Kok9d5c8242008-01-24 02:22:38 -08001443
1444request_done:
1445 return err;
1446}
1447
1448static void igb_free_irq(struct igb_adapter *adapter)
1449{
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001450 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001451 int vector = 0, i;
1452
Alexander Duyck047e0032009-10-27 15:49:27 +00001453 free_irq(adapter->msix_entries[vector++].vector, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001454
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001455 for (i = 0; i < adapter->num_q_vectors; i++)
Alexander Duyck047e0032009-10-27 15:49:27 +00001456 free_irq(adapter->msix_entries[vector++].vector,
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001457 adapter->q_vector[i]);
Alexander Duyck047e0032009-10-27 15:49:27 +00001458 } else {
1459 free_irq(adapter->pdev->irq, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001460 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001461}
1462
1463/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001464 * igb_irq_disable - Mask off interrupt generation on the NIC
1465 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001466 **/
1467static void igb_irq_disable(struct igb_adapter *adapter)
1468{
1469 struct e1000_hw *hw = &adapter->hw;
1470
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001471 /* we need to be careful when disabling interrupts. The VFs are also
Alexander Duyck25568a52009-10-27 23:49:59 +00001472 * mapped into these registers and so clearing the bits can cause
1473 * issues on the VF drivers so we only need to clear what we set
1474 */
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001475 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001476 u32 regval = rd32(E1000_EIAM);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001477
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001478 wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask);
1479 wr32(E1000_EIMC, adapter->eims_enable_mask);
1480 regval = rd32(E1000_EIAC);
1481 wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask);
Auke Kok9d5c8242008-01-24 02:22:38 -08001482 }
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001483
1484 wr32(E1000_IAM, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08001485 wr32(E1000_IMC, ~0);
1486 wrfl();
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001487 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Emil Tantilov81a61852010-08-02 14:40:52 +00001488 int i;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001489
Emil Tantilov81a61852010-08-02 14:40:52 +00001490 for (i = 0; i < adapter->num_q_vectors; i++)
1491 synchronize_irq(adapter->msix_entries[i].vector);
1492 } else {
1493 synchronize_irq(adapter->pdev->irq);
1494 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001495}
1496
1497/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001498 * igb_irq_enable - Enable default interrupt generation settings
1499 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001500 **/
1501static void igb_irq_enable(struct igb_adapter *adapter)
1502{
1503 struct e1000_hw *hw = &adapter->hw;
1504
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001505 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck06218a82011-08-26 07:46:55 +00001506 u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA;
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001507 u32 regval = rd32(E1000_EIAC);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001508
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001509 wr32(E1000_EIAC, regval | adapter->eims_enable_mask);
1510 regval = rd32(E1000_EIAM);
1511 wr32(E1000_EIAM, regval | adapter->eims_enable_mask);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001512 wr32(E1000_EIMS, adapter->eims_enable_mask);
Alexander Duyck25568a52009-10-27 23:49:59 +00001513 if (adapter->vfs_allocated_count) {
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001514 wr32(E1000_MBVFIMR, 0xFF);
Alexander Duyck25568a52009-10-27 23:49:59 +00001515 ims |= E1000_IMS_VMMB;
1516 }
1517 wr32(E1000_IMS, ims);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001518 } else {
Alexander Duyck55cac242009-11-19 12:42:21 +00001519 wr32(E1000_IMS, IMS_ENABLE_MASK |
1520 E1000_IMS_DRSTA);
1521 wr32(E1000_IAM, IMS_ENABLE_MASK |
1522 E1000_IMS_DRSTA);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001523 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001524}
1525
1526static void igb_update_mng_vlan(struct igb_adapter *adapter)
1527{
Alexander Duyck51466232009-10-27 23:47:35 +00001528 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08001529 u16 vid = adapter->hw.mng_cookie.vlan_id;
1530 u16 old_vid = adapter->mng_vlan_id;
Auke Kok9d5c8242008-01-24 02:22:38 -08001531
Alexander Duyck51466232009-10-27 23:47:35 +00001532 if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
1533 /* add VID to filter table */
1534 igb_vfta_set(hw, vid, true);
1535 adapter->mng_vlan_id = vid;
1536 } else {
1537 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
1538 }
1539
1540 if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
1541 (vid != old_vid) &&
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00001542 !test_bit(old_vid, adapter->active_vlans)) {
Alexander Duyck51466232009-10-27 23:47:35 +00001543 /* remove VID from filter table */
1544 igb_vfta_set(hw, old_vid, false);
Auke Kok9d5c8242008-01-24 02:22:38 -08001545 }
1546}
1547
1548/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001549 * igb_release_hw_control - release control of the h/w to f/w
1550 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001551 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001552 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
1553 * For ASF and Pass Through versions of f/w this means that the
1554 * driver is no longer loaded.
Auke Kok9d5c8242008-01-24 02:22:38 -08001555 **/
1556static void igb_release_hw_control(struct igb_adapter *adapter)
1557{
1558 struct e1000_hw *hw = &adapter->hw;
1559 u32 ctrl_ext;
1560
1561 /* Let firmware take over control of h/w */
1562 ctrl_ext = rd32(E1000_CTRL_EXT);
1563 wr32(E1000_CTRL_EXT,
1564 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1565}
1566
Auke Kok9d5c8242008-01-24 02:22:38 -08001567/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001568 * igb_get_hw_control - get control of the h/w from f/w
1569 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001570 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001571 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
1572 * For ASF and Pass Through versions of f/w this means that
1573 * the driver is loaded.
Auke Kok9d5c8242008-01-24 02:22:38 -08001574 **/
1575static void igb_get_hw_control(struct igb_adapter *adapter)
1576{
1577 struct e1000_hw *hw = &adapter->hw;
1578 u32 ctrl_ext;
1579
1580 /* Let firmware know the driver has taken over */
1581 ctrl_ext = rd32(E1000_CTRL_EXT);
1582 wr32(E1000_CTRL_EXT,
1583 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1584}
1585
Auke Kok9d5c8242008-01-24 02:22:38 -08001586/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001587 * igb_configure - configure the hardware for RX and TX
1588 * @adapter: private board structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001589 **/
1590static void igb_configure(struct igb_adapter *adapter)
1591{
1592 struct net_device *netdev = adapter->netdev;
1593 int i;
1594
1595 igb_get_hw_control(adapter);
Alexander Duyckff41f8d2009-09-03 14:48:56 +00001596 igb_set_rx_mode(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08001597
1598 igb_restore_vlan(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001599
Alexander Duyck85b430b2009-10-27 15:50:29 +00001600 igb_setup_tctl(adapter);
Alexander Duyck06cf2662009-10-27 15:53:25 +00001601 igb_setup_mrqc(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001602 igb_setup_rctl(adapter);
Alexander Duyck85b430b2009-10-27 15:50:29 +00001603
1604 igb_configure_tx(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001605 igb_configure_rx(adapter);
Alexander Duyck662d7202008-06-27 11:00:29 -07001606
1607 igb_rx_fifo_flush_82575(&adapter->hw);
1608
Alexander Duyckc493ea42009-03-20 00:16:50 +00001609 /* call igb_desc_unused which always leaves
Auke Kok9d5c8242008-01-24 02:22:38 -08001610 * at least 1 descriptor unused to make sure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001611 * next_to_use != next_to_clean
1612 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001613 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00001614 struct igb_ring *ring = adapter->rx_ring[i];
Alexander Duyckcd392f52011-08-26 07:43:59 +00001615 igb_alloc_rx_buffers(ring, igb_desc_unused(ring));
Auke Kok9d5c8242008-01-24 02:22:38 -08001616 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001617}
1618
Nick Nunley88a268c2010-02-17 01:01:59 +00001619/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001620 * igb_power_up_link - Power up the phy/serdes link
1621 * @adapter: address of board private structure
Nick Nunley88a268c2010-02-17 01:01:59 +00001622 **/
1623void igb_power_up_link(struct igb_adapter *adapter)
1624{
Akeem G. Abodunrin76886592012-07-17 04:51:18 +00001625 igb_reset_phy(&adapter->hw);
1626
Nick Nunley88a268c2010-02-17 01:01:59 +00001627 if (adapter->hw.phy.media_type == e1000_media_type_copper)
1628 igb_power_up_phy_copper(&adapter->hw);
1629 else
1630 igb_power_up_serdes_link_82575(&adapter->hw);
1631}
1632
1633/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001634 * igb_power_down_link - Power down the phy/serdes link
1635 * @adapter: address of board private structure
Nick Nunley88a268c2010-02-17 01:01:59 +00001636 */
1637static void igb_power_down_link(struct igb_adapter *adapter)
1638{
1639 if (adapter->hw.phy.media_type == e1000_media_type_copper)
1640 igb_power_down_phy_copper_82575(&adapter->hw);
1641 else
1642 igb_shutdown_serdes_link_82575(&adapter->hw);
1643}
Auke Kok9d5c8242008-01-24 02:22:38 -08001644
1645/**
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001646 * Detect and switch function for Media Auto Sense
1647 * @adapter: address of the board private structure
1648 **/
1649static void igb_check_swap_media(struct igb_adapter *adapter)
1650{
1651 struct e1000_hw *hw = &adapter->hw;
1652 u32 ctrl_ext, connsw;
1653 bool swap_now = false;
1654
1655 ctrl_ext = rd32(E1000_CTRL_EXT);
1656 connsw = rd32(E1000_CONNSW);
1657
1658 /* need to live swap if current media is copper and we have fiber/serdes
1659 * to go to.
1660 */
1661
1662 if ((hw->phy.media_type == e1000_media_type_copper) &&
1663 (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) {
1664 swap_now = true;
1665 } else if (!(connsw & E1000_CONNSW_SERDESD)) {
1666 /* copper signal takes time to appear */
1667 if (adapter->copper_tries < 4) {
1668 adapter->copper_tries++;
1669 connsw |= E1000_CONNSW_AUTOSENSE_CONF;
1670 wr32(E1000_CONNSW, connsw);
1671 return;
1672 } else {
1673 adapter->copper_tries = 0;
1674 if ((connsw & E1000_CONNSW_PHYSD) &&
1675 (!(connsw & E1000_CONNSW_PHY_PDN))) {
1676 swap_now = true;
1677 connsw &= ~E1000_CONNSW_AUTOSENSE_CONF;
1678 wr32(E1000_CONNSW, connsw);
1679 }
1680 }
1681 }
1682
1683 if (!swap_now)
1684 return;
1685
1686 switch (hw->phy.media_type) {
1687 case e1000_media_type_copper:
1688 netdev_info(adapter->netdev,
1689 "MAS: changing media to fiber/serdes\n");
1690 ctrl_ext |=
1691 E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1692 adapter->flags |= IGB_FLAG_MEDIA_RESET;
1693 adapter->copper_tries = 0;
1694 break;
1695 case e1000_media_type_internal_serdes:
1696 case e1000_media_type_fiber:
1697 netdev_info(adapter->netdev,
1698 "MAS: changing media to copper\n");
1699 ctrl_ext &=
1700 ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1701 adapter->flags |= IGB_FLAG_MEDIA_RESET;
1702 break;
1703 default:
1704 /* shouldn't get here during regular operation */
1705 netdev_err(adapter->netdev,
1706 "AMS: Invalid media type found, returning\n");
1707 break;
1708 }
1709 wr32(E1000_CTRL_EXT, ctrl_ext);
1710}
1711
1712/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001713 * igb_up - Open the interface and prepare it to handle traffic
1714 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001715 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08001716int igb_up(struct igb_adapter *adapter)
1717{
1718 struct e1000_hw *hw = &adapter->hw;
1719 int i;
1720
1721 /* hardware has been reset, we need to reload some things */
1722 igb_configure(adapter);
1723
1724 clear_bit(__IGB_DOWN, &adapter->state);
1725
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001726 for (i = 0; i < adapter->num_q_vectors; i++)
1727 napi_enable(&(adapter->q_vector[i]->napi));
1728
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001729 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Auke Kok9d5c8242008-01-24 02:22:38 -08001730 igb_configure_msix(adapter);
Alexander Duyckfeeb2722010-02-03 21:59:51 +00001731 else
1732 igb_assign_vector(adapter->q_vector[0], 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08001733
1734 /* Clear any pending interrupts. */
1735 rd32(E1000_ICR);
1736 igb_irq_enable(adapter);
1737
Alexander Duyckd4960302009-10-27 15:53:45 +00001738 /* notify VFs that reset has been completed */
1739 if (adapter->vfs_allocated_count) {
1740 u32 reg_data = rd32(E1000_CTRL_EXT);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001741
Alexander Duyckd4960302009-10-27 15:53:45 +00001742 reg_data |= E1000_CTRL_EXT_PFRSTD;
1743 wr32(E1000_CTRL_EXT, reg_data);
1744 }
1745
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00001746 netif_tx_start_all_queues(adapter->netdev);
1747
Alexander Duyck25568a52009-10-27 23:49:59 +00001748 /* start the watchdog. */
1749 hw->mac.get_link_status = 1;
1750 schedule_work(&adapter->watchdog_task);
1751
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00001752 if ((adapter->flags & IGB_FLAG_EEE) &&
1753 (!hw->dev_spec._82575.eee_disable))
1754 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
1755
Auke Kok9d5c8242008-01-24 02:22:38 -08001756 return 0;
1757}
1758
1759void igb_down(struct igb_adapter *adapter)
1760{
Auke Kok9d5c8242008-01-24 02:22:38 -08001761 struct net_device *netdev = adapter->netdev;
Alexander Duyck330a6d62009-10-27 23:51:35 +00001762 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08001763 u32 tctl, rctl;
1764 int i;
1765
1766 /* signal that we're down so the interrupt handler does not
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001767 * reschedule our watchdog timer
1768 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001769 set_bit(__IGB_DOWN, &adapter->state);
1770
1771 /* disable receives in the hardware */
1772 rctl = rd32(E1000_RCTL);
1773 wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
1774 /* flush and sleep below */
1775
David S. Millerfd2ea0a2008-07-17 01:56:23 -07001776 netif_tx_stop_all_queues(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08001777
1778 /* disable transmits in the hardware */
1779 tctl = rd32(E1000_TCTL);
1780 tctl &= ~E1000_TCTL_EN;
1781 wr32(E1000_TCTL, tctl);
1782 /* flush both disables and wait for them to finish */
1783 wrfl();
1784 msleep(10);
1785
Auke Kok9d5c8242008-01-24 02:22:38 -08001786 igb_irq_disable(adapter);
1787
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00001788 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
1789
Carolyn Wyborny41f149a2013-04-30 00:21:32 +00001790 for (i = 0; i < adapter->num_q_vectors; i++) {
1791 napi_synchronize(&(adapter->q_vector[i]->napi));
1792 napi_disable(&(adapter->q_vector[i]->napi));
1793 }
1794
1795
Auke Kok9d5c8242008-01-24 02:22:38 -08001796 del_timer_sync(&adapter->watchdog_timer);
1797 del_timer_sync(&adapter->phy_info_timer);
1798
Auke Kok9d5c8242008-01-24 02:22:38 -08001799 netif_carrier_off(netdev);
Alexander Duyck04fe6352009-02-06 23:22:32 +00001800
1801 /* record the stats before reset*/
Eric Dumazet12dcd862010-10-15 17:27:10 +00001802 spin_lock(&adapter->stats64_lock);
1803 igb_update_stats(adapter, &adapter->stats64);
1804 spin_unlock(&adapter->stats64_lock);
Alexander Duyck04fe6352009-02-06 23:22:32 +00001805
Auke Kok9d5c8242008-01-24 02:22:38 -08001806 adapter->link_speed = 0;
1807 adapter->link_duplex = 0;
1808
Jeff Kirsher30236822008-06-24 17:01:15 -07001809 if (!pci_channel_offline(adapter->pdev))
1810 igb_reset(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001811 igb_clean_all_tx_rings(adapter);
1812 igb_clean_all_rx_rings(adapter);
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00001813#ifdef CONFIG_IGB_DCA
1814
1815 /* since we reset the hardware DCA settings were cleared */
1816 igb_setup_dca(adapter);
1817#endif
Auke Kok9d5c8242008-01-24 02:22:38 -08001818}
1819
1820void igb_reinit_locked(struct igb_adapter *adapter)
1821{
1822 WARN_ON(in_interrupt());
1823 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
1824 msleep(1);
1825 igb_down(adapter);
1826 igb_up(adapter);
1827 clear_bit(__IGB_RESETTING, &adapter->state);
1828}
1829
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001830/** igb_enable_mas - Media Autosense re-enable after swap
1831 *
1832 * @adapter: adapter struct
1833 **/
1834static s32 igb_enable_mas(struct igb_adapter *adapter)
1835{
1836 struct e1000_hw *hw = &adapter->hw;
1837 u32 connsw;
1838 s32 ret_val = 0;
1839
1840 connsw = rd32(E1000_CONNSW);
1841 if (!(hw->phy.media_type == e1000_media_type_copper))
1842 return ret_val;
1843
1844 /* configure for SerDes media detect */
1845 if (!(connsw & E1000_CONNSW_SERDESD)) {
1846 connsw |= E1000_CONNSW_ENRGSRC;
1847 connsw |= E1000_CONNSW_AUTOSENSE_EN;
1848 wr32(E1000_CONNSW, connsw);
1849 wrfl();
1850 } else if (connsw & E1000_CONNSW_SERDESD) {
1851 /* already SerDes, no need to enable anything */
1852 return ret_val;
1853 } else {
1854 netdev_info(adapter->netdev,
1855 "MAS: Unable to configure feature, disabling..\n");
1856 adapter->flags &= ~IGB_FLAG_MAS_ENABLE;
1857 }
1858 return ret_val;
1859}
1860
Auke Kok9d5c8242008-01-24 02:22:38 -08001861void igb_reset(struct igb_adapter *adapter)
1862{
Alexander Duyck090b1792009-10-27 23:51:55 +00001863 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08001864 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck2d064c02008-07-08 15:10:12 -07001865 struct e1000_mac_info *mac = &hw->mac;
1866 struct e1000_fc_info *fc = &hw->fc;
Matthew Vickd48507f2012-11-08 04:03:58 +00001867 u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm;
Auke Kok9d5c8242008-01-24 02:22:38 -08001868
1869 /* Repartition Pba for greater than 9k mtu
1870 * To take effect CTRL.RST is required.
1871 */
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001872 switch (mac->type) {
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +00001873 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00001874 case e1000_i354:
Alexander Duyck55cac242009-11-19 12:42:21 +00001875 case e1000_82580:
1876 pba = rd32(E1000_RXPBS);
1877 pba = igb_rxpbs_adjust_82580(pba);
1878 break;
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001879 case e1000_82576:
Alexander Duyckd249be52009-10-27 23:46:38 +00001880 pba = rd32(E1000_RXPBS);
1881 pba &= E1000_RXPBS_SIZE_MASK_82576;
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001882 break;
1883 case e1000_82575:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00001884 case e1000_i210:
1885 case e1000_i211:
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001886 default:
1887 pba = E1000_PBA_34K;
1888 break;
Alexander Duyck2d064c02008-07-08 15:10:12 -07001889 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001890
Alexander Duyck2d064c02008-07-08 15:10:12 -07001891 if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) &&
1892 (mac->type < e1000_82576)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001893 /* adjust PBA for jumbo frames */
1894 wr32(E1000_PBA, pba);
1895
1896 /* To maintain wire speed transmits, the Tx FIFO should be
1897 * large enough to accommodate two full transmit packets,
1898 * rounded up to the next 1KB and expressed in KB. Likewise,
1899 * the Rx FIFO should be large enough to accommodate at least
1900 * one full receive packet and is similarly rounded up and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001901 * expressed in KB.
1902 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001903 pba = rd32(E1000_PBA);
1904 /* upper 16 bits has Tx packet buffer allocation size in KB */
1905 tx_space = pba >> 16;
1906 /* lower 16 bits has Rx packet buffer allocation size in KB */
1907 pba &= 0xffff;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001908 /* the Tx fifo also stores 16 bytes of information about the Tx
1909 * but don't include ethernet FCS because hardware appends it
1910 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001911 min_tx_space = (adapter->max_frame_size +
Alexander Duyck85e8d002009-02-16 00:00:20 -08001912 sizeof(union e1000_adv_tx_desc) -
Auke Kok9d5c8242008-01-24 02:22:38 -08001913 ETH_FCS_LEN) * 2;
1914 min_tx_space = ALIGN(min_tx_space, 1024);
1915 min_tx_space >>= 10;
1916 /* software strips receive CRC, so leave room for it */
1917 min_rx_space = adapter->max_frame_size;
1918 min_rx_space = ALIGN(min_rx_space, 1024);
1919 min_rx_space >>= 10;
1920
1921 /* If current Tx allocation is less than the min Tx FIFO size,
1922 * and the min Tx FIFO size is less than the current Rx FIFO
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001923 * allocation, take space away from current Rx allocation
1924 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001925 if (tx_space < min_tx_space &&
1926 ((min_tx_space - tx_space) < pba)) {
1927 pba = pba - (min_tx_space - tx_space);
1928
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001929 /* if short on Rx space, Rx wins and must trump Tx
1930 * adjustment
1931 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001932 if (pba < min_rx_space)
1933 pba = min_rx_space;
1934 }
Alexander Duyck2d064c02008-07-08 15:10:12 -07001935 wr32(E1000_PBA, pba);
Auke Kok9d5c8242008-01-24 02:22:38 -08001936 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001937
1938 /* flow control settings */
1939 /* The high water mark must be low enough to fit one full frame
1940 * (or the size used for early receive) above it in the Rx FIFO.
1941 * Set it to the lower of:
1942 * - 90% of the Rx FIFO size, or
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001943 * - the full Rx FIFO size minus one full frame
1944 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001945 hwm = min(((pba << 10) * 9 / 10),
Alexander Duyck2d064c02008-07-08 15:10:12 -07001946 ((pba << 10) - 2 * adapter->max_frame_size));
Auke Kok9d5c8242008-01-24 02:22:38 -08001947
Matthew Vickd48507f2012-11-08 04:03:58 +00001948 fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */
Alexander Duyckd405ea32009-12-23 13:21:27 +00001949 fc->low_water = fc->high_water - 16;
Auke Kok9d5c8242008-01-24 02:22:38 -08001950 fc->pause_time = 0xFFFF;
1951 fc->send_xon = 1;
Alexander Duyck0cce1192009-07-23 18:10:24 +00001952 fc->current_mode = fc->requested_mode;
Auke Kok9d5c8242008-01-24 02:22:38 -08001953
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001954 /* disable receive for all VFs and wait one second */
1955 if (adapter->vfs_allocated_count) {
1956 int i;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001957
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001958 for (i = 0 ; i < adapter->vfs_allocated_count; i++)
Greg Rose8fa7e0f2010-11-06 05:43:21 +00001959 adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001960
1961 /* ping all the active vfs to let them know we are going down */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00001962 igb_ping_all_vfs(adapter);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001963
1964 /* disable transmits and receives */
1965 wr32(E1000_VFRE, 0);
1966 wr32(E1000_VFTE, 0);
1967 }
1968
Auke Kok9d5c8242008-01-24 02:22:38 -08001969 /* Allow time for pending master requests to run */
Alexander Duyck330a6d62009-10-27 23:51:35 +00001970 hw->mac.ops.reset_hw(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08001971 wr32(E1000_WUC, 0);
1972
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001973 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
1974 /* need to resetup here after media swap */
1975 adapter->ei.get_invariants(hw);
1976 adapter->flags &= ~IGB_FLAG_MEDIA_RESET;
1977 }
1978 if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
1979 if (igb_enable_mas(adapter))
1980 dev_err(&pdev->dev,
1981 "Error enabling Media Auto Sense\n");
1982 }
Alexander Duyck330a6d62009-10-27 23:51:35 +00001983 if (hw->mac.ops.init_hw(hw))
Alexander Duyck090b1792009-10-27 23:51:55 +00001984 dev_err(&pdev->dev, "Hardware Error\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08001985
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001986 /* Flow control settings reset on hardware reset, so guarantee flow
Matthew Vicka27416b2012-04-18 02:57:44 +00001987 * control is off when forcing speed.
1988 */
1989 if (!hw->mac.autoneg)
1990 igb_force_mac_fc(hw);
1991
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00001992 igb_init_dmac(adapter, pba);
Carolyn Wybornye4288932012-12-07 03:01:42 +00001993#ifdef CONFIG_IGB_HWMON
1994 /* Re-initialize the thermal sensor on i350 devices. */
1995 if (!test_bit(__IGB_DOWN, &adapter->state)) {
1996 if (mac->type == e1000_i350 && hw->bus.func == 0) {
1997 /* If present, re-initialize the external thermal sensor
1998 * interface.
1999 */
2000 if (adapter->ets)
2001 mac->ops.init_thermal_sensor_thresh(hw);
2002 }
2003 }
2004#endif
Jeff Kirsherb9361362014-03-13 16:07:14 -07002005 /* Re-establish EEE setting */
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002006 if (hw->phy.media_type == e1000_media_type_copper) {
2007 switch (mac->type) {
2008 case e1000_i350:
2009 case e1000_i210:
2010 case e1000_i211:
2011 igb_set_eee_i350(hw);
2012 break;
2013 case e1000_i354:
2014 igb_set_eee_i354(hw);
2015 break;
2016 default:
2017 break;
2018 }
2019 }
Nick Nunley88a268c2010-02-17 01:01:59 +00002020 if (!netif_running(adapter->netdev))
2021 igb_power_down_link(adapter);
2022
Auke Kok9d5c8242008-01-24 02:22:38 -08002023 igb_update_mng_vlan(adapter);
2024
2025 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2026 wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
2027
Matthew Vick1f6e8172012-08-18 07:26:33 +00002028 /* Re-enable PTP, where applicable. */
2029 igb_ptp_reset(adapter);
Matthew Vick1f6e8172012-08-18 07:26:33 +00002030
Alexander Duyck330a6d62009-10-27 23:51:35 +00002031 igb_get_phy_info(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002032}
2033
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002034static netdev_features_t igb_fix_features(struct net_device *netdev,
2035 netdev_features_t features)
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002036{
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002037 /* Since there is no support for separate Rx/Tx vlan accel
2038 * enable/disable make sure Tx flag is always in same state as Rx.
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002039 */
Patrick McHardyf6469682013-04-19 02:04:27 +00002040 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2041 features |= NETIF_F_HW_VLAN_CTAG_TX;
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002042 else
Patrick McHardyf6469682013-04-19 02:04:27 +00002043 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002044
2045 return features;
2046}
2047
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002048static int igb_set_features(struct net_device *netdev,
2049 netdev_features_t features)
Michał Mirosławac52caa2011-06-08 08:38:01 +00002050{
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002051 netdev_features_t changed = netdev->features ^ features;
Ben Greear89eaefb2012-03-06 09:41:58 +00002052 struct igb_adapter *adapter = netdev_priv(netdev);
Michał Mirosławac52caa2011-06-08 08:38:01 +00002053
Patrick McHardyf6469682013-04-19 02:04:27 +00002054 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002055 igb_vlan_mode(netdev, features);
2056
Ben Greear89eaefb2012-03-06 09:41:58 +00002057 if (!(changed & NETIF_F_RXALL))
2058 return 0;
2059
2060 netdev->features = features;
2061
2062 if (netif_running(netdev))
2063 igb_reinit_locked(adapter);
2064 else
2065 igb_reset(adapter);
2066
Michał Mirosławac52caa2011-06-08 08:38:01 +00002067 return 0;
2068}
2069
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002070static const struct net_device_ops igb_netdev_ops = {
Alexander Duyck559e9c42009-10-27 23:52:50 +00002071 .ndo_open = igb_open,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002072 .ndo_stop = igb_close,
Alexander Duyckcd392f52011-08-26 07:43:59 +00002073 .ndo_start_xmit = igb_xmit_frame,
Eric Dumazet12dcd862010-10-15 17:27:10 +00002074 .ndo_get_stats64 = igb_get_stats64,
Alexander Duyckff41f8d2009-09-03 14:48:56 +00002075 .ndo_set_rx_mode = igb_set_rx_mode,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002076 .ndo_set_mac_address = igb_set_mac,
2077 .ndo_change_mtu = igb_change_mtu,
2078 .ndo_do_ioctl = igb_ioctl,
2079 .ndo_tx_timeout = igb_tx_timeout,
2080 .ndo_validate_addr = eth_validate_addr,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002081 .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid,
2082 .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid,
Williams, Mitch A8151d292010-02-10 01:44:24 +00002083 .ndo_set_vf_mac = igb_ndo_set_vf_mac,
2084 .ndo_set_vf_vlan = igb_ndo_set_vf_vlan,
2085 .ndo_set_vf_tx_rate = igb_ndo_set_vf_bw,
Lior Levy70ea4782013-03-03 20:27:48 +00002086 .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk,
Williams, Mitch A8151d292010-02-10 01:44:24 +00002087 .ndo_get_vf_config = igb_ndo_get_vf_config,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002088#ifdef CONFIG_NET_POLL_CONTROLLER
2089 .ndo_poll_controller = igb_netpoll,
2090#endif
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002091 .ndo_fix_features = igb_fix_features,
2092 .ndo_set_features = igb_set_features,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002093};
2094
Taku Izumi42bfd33a2008-06-20 12:10:30 +09002095/**
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002096 * igb_set_fw_version - Configure version string for ethtool
2097 * @adapter: adapter struct
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002098 **/
2099void igb_set_fw_version(struct igb_adapter *adapter)
2100{
2101 struct e1000_hw *hw = &adapter->hw;
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002102 struct e1000_fw_version fw;
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002103
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002104 igb_get_fw_version(hw, &fw);
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002105
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002106 switch (hw->mac.type) {
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002107 case e1000_i210:
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002108 case e1000_i211:
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002109 if (!(igb_get_flash_presence_i210(hw))) {
2110 snprintf(adapter->fw_version,
2111 sizeof(adapter->fw_version),
2112 "%2d.%2d-%d",
2113 fw.invm_major, fw.invm_minor,
2114 fw.invm_img_type);
2115 break;
2116 }
2117 /* fall through */
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002118 default:
2119 /* if option is rom valid, display its version too */
2120 if (fw.or_valid) {
2121 snprintf(adapter->fw_version,
2122 sizeof(adapter->fw_version),
2123 "%d.%d, 0x%08x, %d.%d.%d",
2124 fw.eep_major, fw.eep_minor, fw.etrack_id,
2125 fw.or_major, fw.or_build, fw.or_patch);
2126 /* no option rom */
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002127 } else if (fw.etrack_id != 0X0000) {
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002128 snprintf(adapter->fw_version,
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002129 sizeof(adapter->fw_version),
2130 "%d.%d, 0x%08x",
2131 fw.eep_major, fw.eep_minor, fw.etrack_id);
2132 } else {
2133 snprintf(adapter->fw_version,
2134 sizeof(adapter->fw_version),
2135 "%d.%d.%d",
2136 fw.eep_major, fw.eep_minor, fw.eep_build);
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002137 }
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002138 break;
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002139 }
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002140 return;
2141}
2142
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002143/**
Carolyn Wyborny56cec242013-10-17 05:36:26 +00002144 * igb_init_mas - init Media Autosense feature if enabled in the NVM
2145 *
2146 * @adapter: adapter struct
2147 **/
2148static void igb_init_mas(struct igb_adapter *adapter)
2149{
2150 struct e1000_hw *hw = &adapter->hw;
2151 u16 eeprom_data;
2152
2153 hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data);
2154 switch (hw->bus.func) {
2155 case E1000_FUNC_0:
2156 if (eeprom_data & IGB_MAS_ENABLE_0) {
2157 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2158 netdev_info(adapter->netdev,
2159 "MAS: Enabling Media Autosense for port %d\n",
2160 hw->bus.func);
2161 }
2162 break;
2163 case E1000_FUNC_1:
2164 if (eeprom_data & IGB_MAS_ENABLE_1) {
2165 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2166 netdev_info(adapter->netdev,
2167 "MAS: Enabling Media Autosense for port %d\n",
2168 hw->bus.func);
2169 }
2170 break;
2171 case E1000_FUNC_2:
2172 if (eeprom_data & IGB_MAS_ENABLE_2) {
2173 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2174 netdev_info(adapter->netdev,
2175 "MAS: Enabling Media Autosense for port %d\n",
2176 hw->bus.func);
2177 }
2178 break;
2179 case E1000_FUNC_3:
2180 if (eeprom_data & IGB_MAS_ENABLE_3) {
2181 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2182 netdev_info(adapter->netdev,
2183 "MAS: Enabling Media Autosense for port %d\n",
2184 hw->bus.func);
2185 }
2186 break;
2187 default:
2188 /* Shouldn't get here */
2189 netdev_err(adapter->netdev,
2190 "MAS: Invalid port configuration, returning\n");
2191 break;
2192 }
2193}
2194
2195/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002196 * igb_init_i2c - Init I2C interface
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002197 * @adapter: pointer to adapter structure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002198 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002199static s32 igb_init_i2c(struct igb_adapter *adapter)
2200{
2201 s32 status = E1000_SUCCESS;
2202
2203 /* I2C interface supported on i350 devices */
2204 if (adapter->hw.mac.type != e1000_i350)
2205 return E1000_SUCCESS;
2206
2207 /* Initialize the i2c bus which is controlled by the registers.
2208 * This bus will use the i2c_algo_bit structue that implements
2209 * the protocol through toggling of the 4 bits in the register.
2210 */
2211 adapter->i2c_adap.owner = THIS_MODULE;
2212 adapter->i2c_algo = igb_i2c_algo;
2213 adapter->i2c_algo.data = adapter;
2214 adapter->i2c_adap.algo_data = &adapter->i2c_algo;
2215 adapter->i2c_adap.dev.parent = &adapter->pdev->dev;
2216 strlcpy(adapter->i2c_adap.name, "igb BB",
2217 sizeof(adapter->i2c_adap.name));
2218 status = i2c_bit_add_bus(&adapter->i2c_adap);
2219 return status;
2220}
2221
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002222/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002223 * igb_probe - Device Initialization Routine
2224 * @pdev: PCI device information struct
2225 * @ent: entry in igb_pci_tbl
Auke Kok9d5c8242008-01-24 02:22:38 -08002226 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002227 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08002228 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002229 * igb_probe initializes an adapter identified by a pci_dev structure.
2230 * The OS initialization, configuring of the adapter private structure,
2231 * and a hardware reset occur.
Auke Kok9d5c8242008-01-24 02:22:38 -08002232 **/
Greg Kroah-Hartman1dd06ae2012-12-06 14:30:56 +00002233static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Auke Kok9d5c8242008-01-24 02:22:38 -08002234{
2235 struct net_device *netdev;
2236 struct igb_adapter *adapter;
2237 struct e1000_hw *hw;
Alexander Duyck4337e992009-10-27 23:48:31 +00002238 u16 eeprom_data = 0;
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002239 s32 ret_val;
Alexander Duyck4337e992009-10-27 23:48:31 +00002240 static int global_quad_port_a; /* global quad port a indication */
Auke Kok9d5c8242008-01-24 02:22:38 -08002241 const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
David S. Miller2d6a5e92009-03-17 15:01:30 -07002242 int err, pci_using_dac;
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002243 u8 part_str[E1000_PBANUM_LENGTH];
Auke Kok9d5c8242008-01-24 02:22:38 -08002244
Andy Gospodarekbded64a2010-07-21 06:40:31 +00002245 /* Catch broken hardware that put the wrong VF device ID in
2246 * the PCIe SR-IOV capability.
2247 */
2248 if (pdev->is_virtfn) {
2249 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002250 pci_name(pdev), pdev->vendor, pdev->device);
Andy Gospodarekbded64a2010-07-21 06:40:31 +00002251 return -EINVAL;
2252 }
2253
Alexander Duyckaed5dec2009-02-06 23:16:04 +00002254 err = pci_enable_device_mem(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002255 if (err)
2256 return err;
2257
2258 pci_using_dac = 0;
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002259 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
Auke Kok9d5c8242008-01-24 02:22:38 -08002260 if (!err) {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002261 pci_using_dac = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08002262 } else {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002263 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
Auke Kok9d5c8242008-01-24 02:22:38 -08002264 if (err) {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002265 dev_err(&pdev->dev,
2266 "No usable DMA configuration, aborting\n");
2267 goto err_dma;
Auke Kok9d5c8242008-01-24 02:22:38 -08002268 }
2269 }
2270
Alexander Duyckaed5dec2009-02-06 23:16:04 +00002271 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002272 IORESOURCE_MEM),
2273 igb_driver_name);
Auke Kok9d5c8242008-01-24 02:22:38 -08002274 if (err)
2275 goto err_pci_reg;
2276
Frans Pop19d5afd2009-10-02 10:04:12 -07002277 pci_enable_pcie_error_reporting(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08002278
Auke Kok9d5c8242008-01-24 02:22:38 -08002279 pci_set_master(pdev);
Auke Kokc682fc22008-04-23 11:09:34 -07002280 pci_save_state(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002281
2282 err = -ENOMEM;
Alexander Duyck1bfaf072009-02-19 20:39:23 -08002283 netdev = alloc_etherdev_mq(sizeof(struct igb_adapter),
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00002284 IGB_MAX_TX_QUEUES);
Auke Kok9d5c8242008-01-24 02:22:38 -08002285 if (!netdev)
2286 goto err_alloc_etherdev;
2287
2288 SET_NETDEV_DEV(netdev, &pdev->dev);
2289
2290 pci_set_drvdata(pdev, netdev);
2291 adapter = netdev_priv(netdev);
2292 adapter->netdev = netdev;
2293 adapter->pdev = pdev;
2294 hw = &adapter->hw;
2295 hw->back = adapter;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00002296 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kok9d5c8242008-01-24 02:22:38 -08002297
Auke Kok9d5c8242008-01-24 02:22:38 -08002298 err = -EIO;
Aaron Sierra89dbefb2013-10-31 00:32:34 +00002299 hw->hw_addr = pci_iomap(pdev, 0, 0);
Alexander Duyck28b07592009-02-06 23:20:31 +00002300 if (!hw->hw_addr)
Auke Kok9d5c8242008-01-24 02:22:38 -08002301 goto err_ioremap;
2302
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002303 netdev->netdev_ops = &igb_netdev_ops;
Auke Kok9d5c8242008-01-24 02:22:38 -08002304 igb_set_ethtool_ops(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002305 netdev->watchdog_timeo = 5 * HZ;
Auke Kok9d5c8242008-01-24 02:22:38 -08002306
2307 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
2308
Aaron Sierra89dbefb2013-10-31 00:32:34 +00002309 netdev->mem_start = pci_resource_start(pdev, 0);
2310 netdev->mem_end = pci_resource_end(pdev, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08002311
Auke Kok9d5c8242008-01-24 02:22:38 -08002312 /* PCI config space info */
2313 hw->vendor_id = pdev->vendor;
2314 hw->device_id = pdev->device;
2315 hw->revision_id = pdev->revision;
2316 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2317 hw->subsystem_device_id = pdev->subsystem_device;
2318
Auke Kok9d5c8242008-01-24 02:22:38 -08002319 /* Copy the default MAC, PHY and NVM function pointers */
2320 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
2321 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
2322 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
2323 /* Initialize skew-specific constants */
2324 err = ei->get_invariants(hw);
2325 if (err)
Alexander Duyck450c87c2009-02-06 23:22:11 +00002326 goto err_sw_init;
Auke Kok9d5c8242008-01-24 02:22:38 -08002327
Alexander Duyck450c87c2009-02-06 23:22:11 +00002328 /* setup the private structure */
Auke Kok9d5c8242008-01-24 02:22:38 -08002329 err = igb_sw_init(adapter);
2330 if (err)
2331 goto err_sw_init;
2332
2333 igb_get_bus_info_pcie(hw);
2334
2335 hw->phy.autoneg_wait_to_complete = false;
Auke Kok9d5c8242008-01-24 02:22:38 -08002336
2337 /* Copper options */
2338 if (hw->phy.media_type == e1000_media_type_copper) {
2339 hw->phy.mdix = AUTO_ALL_MODES;
2340 hw->phy.disable_polarity_correction = false;
2341 hw->phy.ms_type = e1000_ms_hw_default;
2342 }
2343
2344 if (igb_check_reset_block(hw))
2345 dev_info(&pdev->dev,
2346 "PHY reset is blocked due to SOL/IDER session.\n");
2347
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002348 /* features is initialized to 0 in allocation, it might have bits
Alexander Duyck077887c2011-08-26 07:46:29 +00002349 * set by igb_sw_init so we should use an or instead of an
2350 * assignment.
2351 */
2352 netdev->features |= NETIF_F_SG |
2353 NETIF_F_IP_CSUM |
2354 NETIF_F_IPV6_CSUM |
2355 NETIF_F_TSO |
2356 NETIF_F_TSO6 |
2357 NETIF_F_RXHASH |
2358 NETIF_F_RXCSUM |
Patrick McHardyf6469682013-04-19 02:04:27 +00002359 NETIF_F_HW_VLAN_CTAG_RX |
2360 NETIF_F_HW_VLAN_CTAG_TX;
Michał Mirosławac52caa2011-06-08 08:38:01 +00002361
Alexander Duyck077887c2011-08-26 07:46:29 +00002362 /* copy netdev features into list of user selectable features */
2363 netdev->hw_features |= netdev->features;
Ben Greear89eaefb2012-03-06 09:41:58 +00002364 netdev->hw_features |= NETIF_F_RXALL;
Auke Kok9d5c8242008-01-24 02:22:38 -08002365
Alexander Duyck077887c2011-08-26 07:46:29 +00002366 /* set this bit last since it cannot be part of hw_features */
Patrick McHardyf6469682013-04-19 02:04:27 +00002367 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
Alexander Duyck077887c2011-08-26 07:46:29 +00002368
2369 netdev->vlan_features |= NETIF_F_TSO |
2370 NETIF_F_TSO6 |
2371 NETIF_F_IP_CSUM |
2372 NETIF_F_IPV6_CSUM |
2373 NETIF_F_SG;
Jeff Kirsher48f29ff2008-06-05 04:06:27 -07002374
Ben Greear6b8f0922012-03-06 09:41:53 +00002375 netdev->priv_flags |= IFF_SUPP_NOFCS;
2376
Yi Zou7b872a52010-09-22 17:57:58 +00002377 if (pci_using_dac) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002378 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00002379 netdev->vlan_features |= NETIF_F_HIGHDMA;
2380 }
Auke Kok9d5c8242008-01-24 02:22:38 -08002381
Michał Mirosławac52caa2011-06-08 08:38:01 +00002382 if (hw->mac.type >= e1000_82576) {
2383 netdev->hw_features |= NETIF_F_SCTP_CSUM;
Jesse Brandeburgb9473562009-04-27 22:36:13 +00002384 netdev->features |= NETIF_F_SCTP_CSUM;
Michał Mirosławac52caa2011-06-08 08:38:01 +00002385 }
Jesse Brandeburgb9473562009-04-27 22:36:13 +00002386
Jiri Pirko01789342011-08-16 06:29:00 +00002387 netdev->priv_flags |= IFF_UNICAST_FLT;
2388
Alexander Duyck330a6d62009-10-27 23:51:35 +00002389 adapter->en_mng_pt = igb_enable_mng_pass_thru(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002390
2391 /* before reading the NVM, reset the controller to put the device in a
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002392 * known good starting state
2393 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002394 hw->mac.ops.reset_hw(hw);
2395
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002396 /* make sure the NVM is good , i211/i210 parts can have special NVM
2397 * that doesn't contain a checksum
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002398 */
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002399 switch (hw->mac.type) {
2400 case e1000_i210:
2401 case e1000_i211:
2402 if (igb_get_flash_presence_i210(hw)) {
2403 if (hw->nvm.ops.validate(hw) < 0) {
2404 dev_err(&pdev->dev,
2405 "The NVM Checksum Is Not Valid\n");
2406 err = -EIO;
2407 goto err_eeprom;
2408 }
2409 }
2410 break;
2411 default:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002412 if (hw->nvm.ops.validate(hw) < 0) {
2413 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
2414 err = -EIO;
2415 goto err_eeprom;
2416 }
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002417 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08002418 }
2419
2420 /* copy the MAC address out of the NVM */
2421 if (hw->mac.ops.read_mac_addr(hw))
2422 dev_err(&pdev->dev, "NVM Read Error\n");
2423
2424 memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
Auke Kok9d5c8242008-01-24 02:22:38 -08002425
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +00002426 if (!is_valid_ether_addr(netdev->dev_addr)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002427 dev_err(&pdev->dev, "Invalid MAC Address\n");
2428 err = -EIO;
2429 goto err_eeprom;
2430 }
2431
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002432 /* get firmware version for ethtool -i */
2433 igb_set_fw_version(adapter);
2434
Joe Perchesc061b182010-08-23 18:20:03 +00002435 setup_timer(&adapter->watchdog_timer, igb_watchdog,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002436 (unsigned long) adapter);
Joe Perchesc061b182010-08-23 18:20:03 +00002437 setup_timer(&adapter->phy_info_timer, igb_update_phy_info,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002438 (unsigned long) adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08002439
2440 INIT_WORK(&adapter->reset_task, igb_reset_task);
2441 INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
2442
Alexander Duyck450c87c2009-02-06 23:22:11 +00002443 /* Initialize link properties that are user-changeable */
Auke Kok9d5c8242008-01-24 02:22:38 -08002444 adapter->fc_autoneg = true;
2445 hw->mac.autoneg = true;
2446 hw->phy.autoneg_advertised = 0x2f;
2447
Alexander Duyck0cce1192009-07-23 18:10:24 +00002448 hw->fc.requested_mode = e1000_fc_default;
2449 hw->fc.current_mode = e1000_fc_default;
Auke Kok9d5c8242008-01-24 02:22:38 -08002450
Auke Kok9d5c8242008-01-24 02:22:38 -08002451 igb_validate_mdi_setting(hw);
2452
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002453 /* By default, support wake on port A */
Alexander Duycka2cf8b62009-03-13 20:41:17 +00002454 if (hw->bus.func == 0)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002455 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
2456
2457 /* Check the NVM for wake support on non-port A ports */
2458 if (hw->mac.type >= e1000_82580)
Alexander Duyck55cac242009-11-19 12:42:21 +00002459 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002460 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
2461 &eeprom_data);
Alexander Duycka2cf8b62009-03-13 20:41:17 +00002462 else if (hw->bus.func == 1)
2463 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
Auke Kok9d5c8242008-01-24 02:22:38 -08002464
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002465 if (eeprom_data & IGB_EEPROM_APME)
2466 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002467
2468 /* now that we have the eeprom settings, apply the special cases where
2469 * the eeprom may be wrong or the board simply won't support wake on
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002470 * lan on a particular port
2471 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002472 switch (pdev->device) {
2473 case E1000_DEV_ID_82575GB_QUAD_COPPER:
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002474 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002475 break;
2476 case E1000_DEV_ID_82575EB_FIBER_SERDES:
Alexander Duyck2d064c02008-07-08 15:10:12 -07002477 case E1000_DEV_ID_82576_FIBER:
2478 case E1000_DEV_ID_82576_SERDES:
Auke Kok9d5c8242008-01-24 02:22:38 -08002479 /* Wake events only supported on port A for dual fiber
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002480 * regardless of eeprom setting
2481 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002482 if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002483 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002484 break;
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002485 case E1000_DEV_ID_82576_QUAD_COPPER:
Stefan Assmannd5aa2252010-04-09 09:51:34 +00002486 case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002487 /* if quad port adapter, disable WoL on all but port A */
2488 if (global_quad_port_a != 0)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002489 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002490 else
2491 adapter->flags |= IGB_FLAG_QUAD_PORT_A;
2492 /* Reset for multiple quad port adapters */
2493 if (++global_quad_port_a == 4)
2494 global_quad_port_a = 0;
2495 break;
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002496 default:
2497 /* If the device can't wake, don't set software support */
2498 if (!device_can_wakeup(&adapter->pdev->dev))
2499 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002500 }
2501
2502 /* initialize the wol settings based on the eeprom settings */
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002503 if (adapter->flags & IGB_FLAG_WOL_SUPPORTED)
2504 adapter->wol |= E1000_WUFC_MAG;
2505
2506 /* Some vendors want WoL disabled by default, but still supported */
2507 if ((hw->mac.type == e1000_i350) &&
2508 (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
2509 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
2510 adapter->wol = 0;
2511 }
2512
2513 device_set_wakeup_enable(&adapter->pdev->dev,
2514 adapter->flags & IGB_FLAG_WOL_SUPPORTED);
Auke Kok9d5c8242008-01-24 02:22:38 -08002515
2516 /* reset the hardware with the new settings */
2517 igb_reset(adapter);
2518
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002519 /* Init the I2C interface */
2520 err = igb_init_i2c(adapter);
2521 if (err) {
2522 dev_err(&pdev->dev, "failed to init i2c interface\n");
2523 goto err_eeprom;
2524 }
2525
Auke Kok9d5c8242008-01-24 02:22:38 -08002526 /* let the f/w know that the h/w is now under the control of the
Carolyn Wybornye52c0f92014-04-11 01:46:06 +00002527 * driver.
2528 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002529 igb_get_hw_control(adapter);
2530
Auke Kok9d5c8242008-01-24 02:22:38 -08002531 strcpy(netdev->name, "eth%d");
2532 err = register_netdev(netdev);
2533 if (err)
2534 goto err_register;
2535
Jesse Brandeburgb168dfc2009-04-17 20:44:32 +00002536 /* carrier off reporting is important to ethtool even BEFORE open */
2537 netif_carrier_off(netdev);
2538
Jeff Kirsher421e02f2008-10-17 11:08:31 -07002539#ifdef CONFIG_IGB_DCA
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08002540 if (dca_add_requester(&pdev->dev) == 0) {
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002541 adapter->flags |= IGB_FLAG_DCA_ENABLED;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002542 dev_info(&pdev->dev, "DCA enabled\n");
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002543 igb_setup_dca(adapter);
2544 }
Alexander Duyckc5b9bd52009-10-27 23:46:01 +00002545
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002546#endif
Carolyn Wybornye4288932012-12-07 03:01:42 +00002547#ifdef CONFIG_IGB_HWMON
2548 /* Initialize the thermal sensor on i350 devices. */
2549 if (hw->mac.type == e1000_i350 && hw->bus.func == 0) {
2550 u16 ets_word;
Matthew Vick3c89f6d2012-08-10 05:40:43 +00002551
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002552 /* Read the NVM to determine if this i350 device supports an
Carolyn Wybornye4288932012-12-07 03:01:42 +00002553 * external thermal sensor.
2554 */
2555 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word);
2556 if (ets_word != 0x0000 && ets_word != 0xFFFF)
2557 adapter->ets = true;
2558 else
2559 adapter->ets = false;
2560 if (igb_sysfs_init(adapter))
2561 dev_err(&pdev->dev,
2562 "failed to allocate sysfs resources\n");
2563 } else {
2564 adapter->ets = false;
2565 }
2566#endif
Carolyn Wyborny56cec242013-10-17 05:36:26 +00002567 /* Check if Media Autosense is enabled */
2568 adapter->ei = *ei;
2569 if (hw->dev_spec._82575.mas_capable)
2570 igb_init_mas(adapter);
2571
Anders Berggren673b8b72011-02-04 07:32:32 +00002572 /* do hw tstamp init after resetting */
Richard Cochran7ebae812012-03-16 10:55:37 +00002573 igb_ptp_init(adapter);
Anders Berggren673b8b72011-02-04 07:32:32 +00002574
Auke Kok9d5c8242008-01-24 02:22:38 -08002575 dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002576 /* print bus type/speed/width info, not applicable to i354 */
2577 if (hw->mac.type != e1000_i354) {
2578 dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n",
2579 netdev->name,
2580 ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
2581 (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" :
2582 "unknown"),
2583 ((hw->bus.width == e1000_bus_width_pcie_x4) ?
2584 "Width x4" :
2585 (hw->bus.width == e1000_bus_width_pcie_x2) ?
2586 "Width x2" :
2587 (hw->bus.width == e1000_bus_width_pcie_x1) ?
2588 "Width x1" : "unknown"), netdev->dev_addr);
2589 }
Auke Kok9d5c8242008-01-24 02:22:38 -08002590
Todd Fujinaka53ea6c72013-08-23 07:49:00 +00002591 if ((hw->mac.type >= e1000_i210 ||
2592 igb_get_flash_presence_i210(hw))) {
2593 ret_val = igb_read_part_string(hw, part_str,
2594 E1000_PBANUM_LENGTH);
2595 } else {
2596 ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND;
2597 }
2598
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002599 if (ret_val)
2600 strcpy(part_str, "Unknown");
2601 dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str);
Auke Kok9d5c8242008-01-24 02:22:38 -08002602 dev_info(&pdev->dev,
2603 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00002604 (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" :
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002605 (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
Auke Kok9d5c8242008-01-24 02:22:38 -08002606 adapter->num_rx_queues, adapter->num_tx_queues);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002607 if (hw->phy.media_type == e1000_media_type_copper) {
2608 switch (hw->mac.type) {
2609 case e1000_i350:
2610 case e1000_i210:
2611 case e1000_i211:
2612 /* Enable EEE for internal copper PHY devices */
2613 err = igb_set_eee_i350(hw);
2614 if ((!err) &&
2615 (!hw->dev_spec._82575.eee_disable)) {
2616 adapter->eee_advert =
2617 MDIO_EEE_100TX | MDIO_EEE_1000T;
2618 adapter->flags |= IGB_FLAG_EEE;
2619 }
2620 break;
2621 case e1000_i354:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002622 if ((rd32(E1000_CTRL_EXT) &
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002623 E1000_CTRL_EXT_LINK_MODE_SGMII)) {
2624 err = igb_set_eee_i354(hw);
2625 if ((!err) &&
2626 (!hw->dev_spec._82575.eee_disable)) {
2627 adapter->eee_advert =
2628 MDIO_EEE_100TX | MDIO_EEE_1000T;
2629 adapter->flags |= IGB_FLAG_EEE;
2630 }
2631 }
2632 break;
2633 default:
2634 break;
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002635 }
Carolyn Wyborny09b068d2011-03-11 20:42:13 -08002636 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00002637 pm_runtime_put_noidle(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002638 return 0;
2639
2640err_register:
2641 igb_release_hw_control(adapter);
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002642 memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap));
Auke Kok9d5c8242008-01-24 02:22:38 -08002643err_eeprom:
2644 if (!igb_check_reset_block(hw))
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08002645 igb_reset_phy(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002646
2647 if (hw->flash_address)
2648 iounmap(hw->flash_address);
Auke Kok9d5c8242008-01-24 02:22:38 -08002649err_sw_init:
Alexander Duyck047e0032009-10-27 15:49:27 +00002650 igb_clear_interrupt_scheme(adapter);
Peter Senna Tschudin75009b32014-03-20 03:31:08 +00002651 pci_iounmap(pdev, hw->hw_addr);
Auke Kok9d5c8242008-01-24 02:22:38 -08002652err_ioremap:
2653 free_netdev(netdev);
2654err_alloc_etherdev:
Alexander Duyck559e9c42009-10-27 23:52:50 +00002655 pci_release_selected_regions(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002656 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9d5c8242008-01-24 02:22:38 -08002657err_pci_reg:
2658err_dma:
2659 pci_disable_device(pdev);
2660 return err;
2661}
2662
Greg Rosefa44f2f2013-01-17 01:03:06 -08002663#ifdef CONFIG_PCI_IOV
Stefan Assmann781798a2013-09-24 05:18:39 +00002664static int igb_disable_sriov(struct pci_dev *pdev)
Greg Rosefa44f2f2013-01-17 01:03:06 -08002665{
2666 struct net_device *netdev = pci_get_drvdata(pdev);
2667 struct igb_adapter *adapter = netdev_priv(netdev);
2668 struct e1000_hw *hw = &adapter->hw;
2669
2670 /* reclaim resources allocated to VFs */
2671 if (adapter->vf_data) {
2672 /* disable iov and allow time for transactions to clear */
Alexander Duyckb09186d2013-03-26 00:03:26 +00002673 if (pci_vfs_assigned(pdev)) {
Greg Rosefa44f2f2013-01-17 01:03:06 -08002674 dev_warn(&pdev->dev,
2675 "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n");
2676 return -EPERM;
2677 } else {
2678 pci_disable_sriov(pdev);
2679 msleep(500);
2680 }
2681
2682 kfree(adapter->vf_data);
2683 adapter->vf_data = NULL;
2684 adapter->vfs_allocated_count = 0;
2685 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
2686 wrfl();
2687 msleep(100);
2688 dev_info(&pdev->dev, "IOV Disabled\n");
2689
2690 /* Re-enable DMA Coalescing flag since IOV is turned off */
2691 adapter->flags |= IGB_FLAG_DMAC;
2692 }
2693
2694 return 0;
2695}
2696
2697static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs)
2698{
2699 struct net_device *netdev = pci_get_drvdata(pdev);
2700 struct igb_adapter *adapter = netdev_priv(netdev);
2701 int old_vfs = pci_num_vf(pdev);
2702 int err = 0;
2703 int i;
2704
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00002705 if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) {
Mitch A Williams50267192013-06-20 06:03:36 +00002706 err = -EPERM;
2707 goto out;
2708 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002709 if (!num_vfs)
2710 goto out;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002711
Stefan Assmann781798a2013-09-24 05:18:39 +00002712 if (old_vfs) {
2713 dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n",
2714 old_vfs, max_vfs);
2715 adapter->vfs_allocated_count = old_vfs;
2716 } else
2717 adapter->vfs_allocated_count = num_vfs;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002718
2719 adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
2720 sizeof(struct vf_data_storage), GFP_KERNEL);
2721
2722 /* if allocation failed then we do not support SR-IOV */
2723 if (!adapter->vf_data) {
2724 adapter->vfs_allocated_count = 0;
2725 dev_err(&pdev->dev,
2726 "Unable to allocate memory for VF Data Storage\n");
2727 err = -ENOMEM;
2728 goto out;
2729 }
2730
Stefan Assmann781798a2013-09-24 05:18:39 +00002731 /* only call pci_enable_sriov() if no VFs are allocated already */
2732 if (!old_vfs) {
2733 err = pci_enable_sriov(pdev, adapter->vfs_allocated_count);
2734 if (err)
2735 goto err_out;
2736 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002737 dev_info(&pdev->dev, "%d VFs allocated\n",
2738 adapter->vfs_allocated_count);
2739 for (i = 0; i < adapter->vfs_allocated_count; i++)
2740 igb_vf_configure(adapter, i);
2741
2742 /* DMA Coalescing is not supported in IOV mode. */
2743 adapter->flags &= ~IGB_FLAG_DMAC;
2744 goto out;
2745
2746err_out:
2747 kfree(adapter->vf_data);
2748 adapter->vf_data = NULL;
2749 adapter->vfs_allocated_count = 0;
2750out:
2751 return err;
2752}
2753
2754#endif
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002755/**
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002756 * igb_remove_i2c - Cleanup I2C interface
2757 * @adapter: pointer to adapter structure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002758 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002759static void igb_remove_i2c(struct igb_adapter *adapter)
2760{
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002761 /* free the adapter bus structure */
2762 i2c_del_adapter(&adapter->i2c_adap);
2763}
2764
Auke Kok9d5c8242008-01-24 02:22:38 -08002765/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002766 * igb_remove - Device Removal Routine
2767 * @pdev: PCI device information struct
Auke Kok9d5c8242008-01-24 02:22:38 -08002768 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002769 * igb_remove is called by the PCI subsystem to alert the driver
2770 * that it should release a PCI device. The could be caused by a
2771 * Hot-Plug event, or because the driver is going to be removed from
2772 * memory.
Auke Kok9d5c8242008-01-24 02:22:38 -08002773 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05002774static void igb_remove(struct pci_dev *pdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08002775{
2776 struct net_device *netdev = pci_get_drvdata(pdev);
2777 struct igb_adapter *adapter = netdev_priv(netdev);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002778 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08002779
Yan, Zheng749ab2c2012-01-04 20:23:37 +00002780 pm_runtime_get_noresume(&pdev->dev);
Carolyn Wybornye4288932012-12-07 03:01:42 +00002781#ifdef CONFIG_IGB_HWMON
2782 igb_sysfs_exit(adapter);
2783#endif
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002784 igb_remove_i2c(adapter);
Matthew Vicka79f4f82012-08-10 05:40:44 +00002785 igb_ptp_stop(adapter);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002786 /* The watchdog timer may be rescheduled, so explicitly
Tejun Heo760141a2010-12-12 16:45:14 +01002787 * disable watchdog from being rescheduled.
2788 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002789 set_bit(__IGB_DOWN, &adapter->state);
2790 del_timer_sync(&adapter->watchdog_timer);
2791 del_timer_sync(&adapter->phy_info_timer);
2792
Tejun Heo760141a2010-12-12 16:45:14 +01002793 cancel_work_sync(&adapter->reset_task);
2794 cancel_work_sync(&adapter->watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08002795
Jeff Kirsher421e02f2008-10-17 11:08:31 -07002796#ifdef CONFIG_IGB_DCA
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002797 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002798 dev_info(&pdev->dev, "DCA disabled\n");
2799 dca_remove_requester(&pdev->dev);
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002800 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
Alexander Duyckcbd347a2009-02-15 23:59:44 -08002801 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002802 }
2803#endif
2804
Auke Kok9d5c8242008-01-24 02:22:38 -08002805 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002806 * would have already happened in close and is redundant.
2807 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002808 igb_release_hw_control(adapter);
2809
2810 unregister_netdev(netdev);
2811
Alexander Duyck047e0032009-10-27 15:49:27 +00002812 igb_clear_interrupt_scheme(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08002813
Alexander Duyck37680112009-02-19 20:40:30 -08002814#ifdef CONFIG_PCI_IOV
Greg Rosefa44f2f2013-01-17 01:03:06 -08002815 igb_disable_sriov(pdev);
Alexander Duyck37680112009-02-19 20:40:30 -08002816#endif
Alexander Duyck559e9c42009-10-27 23:52:50 +00002817
Peter Senna Tschudin75009b32014-03-20 03:31:08 +00002818 pci_iounmap(pdev, hw->hw_addr);
Alexander Duyck28b07592009-02-06 23:20:31 +00002819 if (hw->flash_address)
2820 iounmap(hw->flash_address);
Alexander Duyck559e9c42009-10-27 23:52:50 +00002821 pci_release_selected_regions(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002822 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9d5c8242008-01-24 02:22:38 -08002823
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002824 kfree(adapter->shadow_vfta);
Auke Kok9d5c8242008-01-24 02:22:38 -08002825 free_netdev(netdev);
2826
Frans Pop19d5afd2009-10-02 10:04:12 -07002827 pci_disable_pcie_error_reporting(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08002828
Auke Kok9d5c8242008-01-24 02:22:38 -08002829 pci_disable_device(pdev);
2830}
2831
2832/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002833 * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space
2834 * @adapter: board private structure to initialize
Alexander Duycka6b623e2009-10-27 23:47:53 +00002835 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002836 * This function initializes the vf specific data storage and then attempts to
2837 * allocate the VFs. The reason for ordering it this way is because it is much
2838 * mor expensive time wise to disable SR-IOV than it is to allocate and free
2839 * the memory for the VFs.
Alexander Duycka6b623e2009-10-27 23:47:53 +00002840 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05002841static void igb_probe_vfs(struct igb_adapter *adapter)
Alexander Duycka6b623e2009-10-27 23:47:53 +00002842{
2843#ifdef CONFIG_PCI_IOV
2844 struct pci_dev *pdev = adapter->pdev;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002845 struct e1000_hw *hw = &adapter->hw;
Alexander Duycka6b623e2009-10-27 23:47:53 +00002846
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002847 /* Virtualization features not supported on i210 family. */
2848 if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
2849 return;
2850
Greg Rosefa44f2f2013-01-17 01:03:06 -08002851 pci_sriov_set_totalvfs(pdev, 7);
Stefan Assmann781798a2013-09-24 05:18:39 +00002852 igb_pci_enable_sriov(pdev, max_vfs);
Alexander Duycka6b623e2009-10-27 23:47:53 +00002853
Alexander Duycka6b623e2009-10-27 23:47:53 +00002854#endif /* CONFIG_PCI_IOV */
2855}
2856
Greg Rosefa44f2f2013-01-17 01:03:06 -08002857static void igb_init_queue_configuration(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08002858{
2859 struct e1000_hw *hw = &adapter->hw;
Matthew Vick374a5422012-05-18 04:54:58 +00002860 u32 max_rss_queues;
Auke Kok9d5c8242008-01-24 02:22:38 -08002861
Matthew Vick374a5422012-05-18 04:54:58 +00002862 /* Determine the maximum number of RSS queues supported. */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002863 switch (hw->mac.type) {
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002864 case e1000_i211:
Matthew Vick374a5422012-05-18 04:54:58 +00002865 max_rss_queues = IGB_MAX_RX_QUEUES_I211;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002866 break;
Matthew Vick374a5422012-05-18 04:54:58 +00002867 case e1000_82575:
2868 case e1000_i210:
2869 max_rss_queues = IGB_MAX_RX_QUEUES_82575;
2870 break;
2871 case e1000_i350:
2872 /* I350 cannot do RSS and SR-IOV at the same time */
2873 if (!!adapter->vfs_allocated_count) {
2874 max_rss_queues = 1;
2875 break;
2876 }
2877 /* fall through */
2878 case e1000_82576:
2879 if (!!adapter->vfs_allocated_count) {
2880 max_rss_queues = 2;
2881 break;
2882 }
2883 /* fall through */
2884 case e1000_82580:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002885 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002886 default:
Matthew Vick374a5422012-05-18 04:54:58 +00002887 max_rss_queues = IGB_MAX_RX_QUEUES;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002888 break;
2889 }
Alexander Duycka99955f2009-11-12 18:37:19 +00002890
Matthew Vick374a5422012-05-18 04:54:58 +00002891 adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus());
2892
2893 /* Determine if we need to pair queues. */
2894 switch (hw->mac.type) {
2895 case e1000_82575:
2896 case e1000_i211:
2897 /* Device supports enough interrupts without queue pairing. */
2898 break;
2899 case e1000_82576:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002900 /* If VFs are going to be allocated with RSS queues then we
Matthew Vick374a5422012-05-18 04:54:58 +00002901 * should pair the queues in order to conserve interrupts due
2902 * to limited supply.
2903 */
2904 if ((adapter->rss_queues > 1) &&
2905 (adapter->vfs_allocated_count > 6))
2906 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
2907 /* fall through */
2908 case e1000_82580:
2909 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002910 case e1000_i354:
Matthew Vick374a5422012-05-18 04:54:58 +00002911 case e1000_i210:
2912 default:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002913 /* If rss_queues > half of max_rss_queues, pair the queues in
Matthew Vick374a5422012-05-18 04:54:58 +00002914 * order to conserve interrupts due to limited supply.
2915 */
2916 if (adapter->rss_queues > (max_rss_queues / 2))
2917 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
2918 break;
2919 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002920}
2921
2922/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002923 * igb_sw_init - Initialize general software structures (struct igb_adapter)
2924 * @adapter: board private structure to initialize
Greg Rosefa44f2f2013-01-17 01:03:06 -08002925 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002926 * igb_sw_init initializes the Adapter private data structure.
2927 * Fields are initialized based on PCI device information and
2928 * OS network device settings (MTU size).
Greg Rosefa44f2f2013-01-17 01:03:06 -08002929 **/
2930static int igb_sw_init(struct igb_adapter *adapter)
2931{
2932 struct e1000_hw *hw = &adapter->hw;
2933 struct net_device *netdev = adapter->netdev;
2934 struct pci_dev *pdev = adapter->pdev;
2935
2936 pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
2937
2938 /* set default ring sizes */
2939 adapter->tx_ring_count = IGB_DEFAULT_TXD;
2940 adapter->rx_ring_count = IGB_DEFAULT_RXD;
2941
2942 /* set default ITR values */
2943 adapter->rx_itr_setting = IGB_DEFAULT_ITR;
2944 adapter->tx_itr_setting = IGB_DEFAULT_ITR;
2945
2946 /* set default work limits */
2947 adapter->tx_work_limit = IGB_DEFAULT_TX_WORK;
2948
2949 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN +
2950 VLAN_HLEN;
2951 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2952
2953 spin_lock_init(&adapter->stats64_lock);
2954#ifdef CONFIG_PCI_IOV
2955 switch (hw->mac.type) {
2956 case e1000_82576:
2957 case e1000_i350:
2958 if (max_vfs > 7) {
2959 dev_warn(&pdev->dev,
2960 "Maximum of 7 VFs per PF, using max\n");
Alex Williamsond0f63ac2013-03-13 15:50:24 +00002961 max_vfs = adapter->vfs_allocated_count = 7;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002962 } else
2963 adapter->vfs_allocated_count = max_vfs;
2964 if (adapter->vfs_allocated_count)
2965 dev_warn(&pdev->dev,
2966 "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n");
2967 break;
2968 default:
2969 break;
2970 }
2971#endif /* CONFIG_PCI_IOV */
2972
2973 igb_init_queue_configuration(adapter);
Alexander Duycka99955f2009-11-12 18:37:19 +00002974
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002975 /* Setup and initialize a copy of the hw vlan table array */
Joe Perchesb2adaca2013-02-03 17:43:58 +00002976 adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32),
2977 GFP_ATOMIC);
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002978
Alexander Duycka6b623e2009-10-27 23:47:53 +00002979 /* This call may decrease the number of queues */
Stefan Assmann53c7d062012-12-04 06:00:12 +00002980 if (igb_init_interrupt_scheme(adapter, true)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002981 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
2982 return -ENOMEM;
2983 }
2984
Alexander Duycka6b623e2009-10-27 23:47:53 +00002985 igb_probe_vfs(adapter);
2986
Auke Kok9d5c8242008-01-24 02:22:38 -08002987 /* Explicitly disable IRQ since the NIC can be in any state. */
2988 igb_irq_disable(adapter);
2989
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002990 if (hw->mac.type >= e1000_i350)
Carolyn Wyborny831ec0b2011-03-11 20:43:54 -08002991 adapter->flags &= ~IGB_FLAG_DMAC;
2992
Auke Kok9d5c8242008-01-24 02:22:38 -08002993 set_bit(__IGB_DOWN, &adapter->state);
2994 return 0;
2995}
2996
2997/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002998 * igb_open - Called when a network interface is made active
2999 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003000 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003001 * Returns 0 on success, negative value on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003002 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003003 * The open entry point is called when a network interface is made
3004 * active by the system (IFF_UP). At this point all resources needed
3005 * for transmit and receive operations are allocated, the interrupt
3006 * handler is registered with the OS, the watchdog timer is started,
3007 * and the stack is notified that the interface is ready.
Auke Kok9d5c8242008-01-24 02:22:38 -08003008 **/
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003009static int __igb_open(struct net_device *netdev, bool resuming)
Auke Kok9d5c8242008-01-24 02:22:38 -08003010{
3011 struct igb_adapter *adapter = netdev_priv(netdev);
3012 struct e1000_hw *hw = &adapter->hw;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003013 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003014 int err;
3015 int i;
3016
3017 /* disallow open during test */
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003018 if (test_bit(__IGB_TESTING, &adapter->state)) {
3019 WARN_ON(resuming);
Auke Kok9d5c8242008-01-24 02:22:38 -08003020 return -EBUSY;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003021 }
3022
3023 if (!resuming)
3024 pm_runtime_get_sync(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003025
Jesse Brandeburgb168dfc2009-04-17 20:44:32 +00003026 netif_carrier_off(netdev);
3027
Auke Kok9d5c8242008-01-24 02:22:38 -08003028 /* allocate transmit descriptors */
3029 err = igb_setup_all_tx_resources(adapter);
3030 if (err)
3031 goto err_setup_tx;
3032
3033 /* allocate receive descriptors */
3034 err = igb_setup_all_rx_resources(adapter);
3035 if (err)
3036 goto err_setup_rx;
3037
Nick Nunley88a268c2010-02-17 01:01:59 +00003038 igb_power_up_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003039
Auke Kok9d5c8242008-01-24 02:22:38 -08003040 /* before we allocate an interrupt, we must be ready to handle it.
3041 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3042 * as soon as we call pci_request_irq, so we have to setup our
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003043 * clean_rx handler before we do so.
3044 */
Auke Kok9d5c8242008-01-24 02:22:38 -08003045 igb_configure(adapter);
3046
3047 err = igb_request_irq(adapter);
3048 if (err)
3049 goto err_req_irq;
3050
Alexander Duyck0c2cc022012-09-25 00:31:22 +00003051 /* Notify the stack of the actual queue counts. */
3052 err = netif_set_real_num_tx_queues(adapter->netdev,
3053 adapter->num_tx_queues);
3054 if (err)
3055 goto err_set_queues;
3056
3057 err = netif_set_real_num_rx_queues(adapter->netdev,
3058 adapter->num_rx_queues);
3059 if (err)
3060 goto err_set_queues;
3061
Auke Kok9d5c8242008-01-24 02:22:38 -08003062 /* From here on the code is the same as igb_up() */
3063 clear_bit(__IGB_DOWN, &adapter->state);
3064
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00003065 for (i = 0; i < adapter->num_q_vectors; i++)
3066 napi_enable(&(adapter->q_vector[i]->napi));
Auke Kok9d5c8242008-01-24 02:22:38 -08003067
3068 /* Clear any pending interrupts. */
3069 rd32(E1000_ICR);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07003070
3071 igb_irq_enable(adapter);
3072
Alexander Duyckd4960302009-10-27 15:53:45 +00003073 /* notify VFs that reset has been completed */
3074 if (adapter->vfs_allocated_count) {
3075 u32 reg_data = rd32(E1000_CTRL_EXT);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003076
Alexander Duyckd4960302009-10-27 15:53:45 +00003077 reg_data |= E1000_CTRL_EXT_PFRSTD;
3078 wr32(E1000_CTRL_EXT, reg_data);
3079 }
3080
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003081 netif_tx_start_all_queues(netdev);
3082
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003083 if (!resuming)
3084 pm_runtime_put(&pdev->dev);
3085
Alexander Duyck25568a52009-10-27 23:49:59 +00003086 /* start the watchdog. */
3087 hw->mac.get_link_status = 1;
3088 schedule_work(&adapter->watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08003089
3090 return 0;
3091
Alexander Duyck0c2cc022012-09-25 00:31:22 +00003092err_set_queues:
3093 igb_free_irq(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003094err_req_irq:
3095 igb_release_hw_control(adapter);
Nick Nunley88a268c2010-02-17 01:01:59 +00003096 igb_power_down_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003097 igb_free_all_rx_resources(adapter);
3098err_setup_rx:
3099 igb_free_all_tx_resources(adapter);
3100err_setup_tx:
3101 igb_reset(adapter);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003102 if (!resuming)
3103 pm_runtime_put(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003104
3105 return err;
3106}
3107
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003108static int igb_open(struct net_device *netdev)
3109{
3110 return __igb_open(netdev, false);
3111}
3112
Auke Kok9d5c8242008-01-24 02:22:38 -08003113/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003114 * igb_close - Disables a network interface
3115 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003116 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003117 * Returns 0, this is not allowed to fail
Auke Kok9d5c8242008-01-24 02:22:38 -08003118 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003119 * The close entry point is called when an interface is de-activated
3120 * by the OS. The hardware is still under the driver's control, but
3121 * needs to be disabled. A global MAC reset is issued to stop the
3122 * hardware, and all transmit and receive resources are freed.
Auke Kok9d5c8242008-01-24 02:22:38 -08003123 **/
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003124static int __igb_close(struct net_device *netdev, bool suspending)
Auke Kok9d5c8242008-01-24 02:22:38 -08003125{
3126 struct igb_adapter *adapter = netdev_priv(netdev);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003127 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003128
3129 WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
Auke Kok9d5c8242008-01-24 02:22:38 -08003130
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003131 if (!suspending)
3132 pm_runtime_get_sync(&pdev->dev);
3133
3134 igb_down(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003135 igb_free_irq(adapter);
3136
3137 igb_free_all_tx_resources(adapter);
3138 igb_free_all_rx_resources(adapter);
3139
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003140 if (!suspending)
3141 pm_runtime_put_sync(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003142 return 0;
3143}
3144
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003145static int igb_close(struct net_device *netdev)
3146{
3147 return __igb_close(netdev, false);
3148}
3149
Auke Kok9d5c8242008-01-24 02:22:38 -08003150/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003151 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
3152 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9d5c8242008-01-24 02:22:38 -08003153 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003154 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003155 **/
Alexander Duyck80785292009-10-27 15:51:47 +00003156int igb_setup_tx_resources(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003157{
Alexander Duyck59d71982010-04-27 13:09:25 +00003158 struct device *dev = tx_ring->dev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003159 int size;
3160
Alexander Duyck06034642011-08-26 07:44:22 +00003161 size = sizeof(struct igb_tx_buffer) * tx_ring->count;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003162
3163 tx_ring->tx_buffer_info = vzalloc(size);
Alexander Duyck06034642011-08-26 07:44:22 +00003164 if (!tx_ring->tx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003165 goto err;
Auke Kok9d5c8242008-01-24 02:22:38 -08003166
3167 /* round up to nearest 4K */
Alexander Duyck85e8d002009-02-16 00:00:20 -08003168 tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
Auke Kok9d5c8242008-01-24 02:22:38 -08003169 tx_ring->size = ALIGN(tx_ring->size, 4096);
3170
Alexander Duyck5536d212012-09-25 00:31:17 +00003171 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
3172 &tx_ring->dma, GFP_KERNEL);
Auke Kok9d5c8242008-01-24 02:22:38 -08003173 if (!tx_ring->desc)
3174 goto err;
3175
Auke Kok9d5c8242008-01-24 02:22:38 -08003176 tx_ring->next_to_use = 0;
3177 tx_ring->next_to_clean = 0;
Alexander Duyck81c2fc22011-08-26 07:45:20 +00003178
Auke Kok9d5c8242008-01-24 02:22:38 -08003179 return 0;
3180
3181err:
Alexander Duyck06034642011-08-26 07:44:22 +00003182 vfree(tx_ring->tx_buffer_info);
Alexander Duyckf33005a2012-09-13 06:27:55 +00003183 tx_ring->tx_buffer_info = NULL;
3184 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08003185 return -ENOMEM;
3186}
3187
3188/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003189 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
3190 * (Descriptors) for all queues
3191 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003192 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003193 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003194 **/
3195static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
3196{
Alexander Duyck439705e2009-10-27 23:49:20 +00003197 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003198 int i, err = 0;
3199
3200 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00003201 err = igb_setup_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003202 if (err) {
Alexander Duyck439705e2009-10-27 23:49:20 +00003203 dev_err(&pdev->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08003204 "Allocation for Tx Queue %u failed\n", i);
3205 for (i--; i >= 0; i--)
Alexander Duyck3025a442010-02-17 01:02:39 +00003206 igb_free_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003207 break;
3208 }
3209 }
3210
3211 return err;
3212}
3213
3214/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003215 * igb_setup_tctl - configure the transmit control registers
3216 * @adapter: Board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003217 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003218void igb_setup_tctl(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08003219{
Auke Kok9d5c8242008-01-24 02:22:38 -08003220 struct e1000_hw *hw = &adapter->hw;
3221 u32 tctl;
Auke Kok9d5c8242008-01-24 02:22:38 -08003222
Alexander Duyck85b430b2009-10-27 15:50:29 +00003223 /* disable queue 0 which is enabled by default on 82575 and 82576 */
3224 wr32(E1000_TXDCTL(0), 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08003225
3226 /* Program the Transmit Control Register */
Auke Kok9d5c8242008-01-24 02:22:38 -08003227 tctl = rd32(E1000_TCTL);
3228 tctl &= ~E1000_TCTL_CT;
3229 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
3230 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
3231
3232 igb_config_collision_dist(hw);
3233
Auke Kok9d5c8242008-01-24 02:22:38 -08003234 /* Enable transmits */
3235 tctl |= E1000_TCTL_EN;
3236
3237 wr32(E1000_TCTL, tctl);
3238}
3239
3240/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003241 * igb_configure_tx_ring - Configure transmit ring after Reset
3242 * @adapter: board private structure
3243 * @ring: tx ring to configure
Alexander Duyck85b430b2009-10-27 15:50:29 +00003244 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003245 * Configure a transmit ring after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003246 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003247void igb_configure_tx_ring(struct igb_adapter *adapter,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003248 struct igb_ring *ring)
Alexander Duyck85b430b2009-10-27 15:50:29 +00003249{
3250 struct e1000_hw *hw = &adapter->hw;
Alexander Duycka74420e2011-08-26 07:43:27 +00003251 u32 txdctl = 0;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003252 u64 tdba = ring->dma;
3253 int reg_idx = ring->reg_idx;
3254
3255 /* disable the queue */
Alexander Duycka74420e2011-08-26 07:43:27 +00003256 wr32(E1000_TXDCTL(reg_idx), 0);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003257 wrfl();
3258 mdelay(10);
3259
3260 wr32(E1000_TDLEN(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003261 ring->count * sizeof(union e1000_adv_tx_desc));
Alexander Duyck85b430b2009-10-27 15:50:29 +00003262 wr32(E1000_TDBAL(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003263 tdba & 0x00000000ffffffffULL);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003264 wr32(E1000_TDBAH(reg_idx), tdba >> 32);
3265
Alexander Duyckfce99e32009-10-27 15:51:27 +00003266 ring->tail = hw->hw_addr + E1000_TDT(reg_idx);
Alexander Duycka74420e2011-08-26 07:43:27 +00003267 wr32(E1000_TDH(reg_idx), 0);
Alexander Duyckfce99e32009-10-27 15:51:27 +00003268 writel(0, ring->tail);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003269
3270 txdctl |= IGB_TX_PTHRESH;
3271 txdctl |= IGB_TX_HTHRESH << 8;
3272 txdctl |= IGB_TX_WTHRESH << 16;
3273
3274 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
3275 wr32(E1000_TXDCTL(reg_idx), txdctl);
3276}
3277
3278/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003279 * igb_configure_tx - Configure transmit Unit after Reset
3280 * @adapter: board private structure
Alexander Duyck85b430b2009-10-27 15:50:29 +00003281 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003282 * Configure the Tx unit of the MAC after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003283 **/
3284static void igb_configure_tx(struct igb_adapter *adapter)
3285{
3286 int i;
3287
3288 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003289 igb_configure_tx_ring(adapter, adapter->tx_ring[i]);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003290}
3291
3292/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003293 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
3294 * @rx_ring: Rx descriptor ring (for a specific queue) to setup
Auke Kok9d5c8242008-01-24 02:22:38 -08003295 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003296 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003297 **/
Alexander Duyck80785292009-10-27 15:51:47 +00003298int igb_setup_rx_resources(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003299{
Alexander Duyck59d71982010-04-27 13:09:25 +00003300 struct device *dev = rx_ring->dev;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003301 int size;
Auke Kok9d5c8242008-01-24 02:22:38 -08003302
Alexander Duyck06034642011-08-26 07:44:22 +00003303 size = sizeof(struct igb_rx_buffer) * rx_ring->count;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003304
3305 rx_ring->rx_buffer_info = vzalloc(size);
Alexander Duyck06034642011-08-26 07:44:22 +00003306 if (!rx_ring->rx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003307 goto err;
Auke Kok9d5c8242008-01-24 02:22:38 -08003308
Auke Kok9d5c8242008-01-24 02:22:38 -08003309 /* Round up to nearest 4K */
Alexander Duyckf33005a2012-09-13 06:27:55 +00003310 rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc);
Auke Kok9d5c8242008-01-24 02:22:38 -08003311 rx_ring->size = ALIGN(rx_ring->size, 4096);
3312
Alexander Duyck5536d212012-09-25 00:31:17 +00003313 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
3314 &rx_ring->dma, GFP_KERNEL);
Auke Kok9d5c8242008-01-24 02:22:38 -08003315 if (!rx_ring->desc)
3316 goto err;
3317
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003318 rx_ring->next_to_alloc = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003319 rx_ring->next_to_clean = 0;
3320 rx_ring->next_to_use = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003321
Auke Kok9d5c8242008-01-24 02:22:38 -08003322 return 0;
3323
3324err:
Alexander Duyck06034642011-08-26 07:44:22 +00003325 vfree(rx_ring->rx_buffer_info);
3326 rx_ring->rx_buffer_info = NULL;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003327 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08003328 return -ENOMEM;
3329}
3330
3331/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003332 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
3333 * (Descriptors) for all queues
3334 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003335 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003336 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003337 **/
3338static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
3339{
Alexander Duyck439705e2009-10-27 23:49:20 +00003340 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003341 int i, err = 0;
3342
3343 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00003344 err = igb_setup_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003345 if (err) {
Alexander Duyck439705e2009-10-27 23:49:20 +00003346 dev_err(&pdev->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08003347 "Allocation for Rx Queue %u failed\n", i);
3348 for (i--; i >= 0; i--)
Alexander Duyck3025a442010-02-17 01:02:39 +00003349 igb_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003350 break;
3351 }
3352 }
3353
3354 return err;
3355}
3356
3357/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003358 * igb_setup_mrqc - configure the multiple receive queue control registers
3359 * @adapter: Board private structure
Alexander Duyck06cf2662009-10-27 15:53:25 +00003360 **/
3361static void igb_setup_mrqc(struct igb_adapter *adapter)
3362{
3363 struct e1000_hw *hw = &adapter->hw;
3364 u32 mrqc, rxcsum;
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003365 u32 j, num_rx_queues;
Alexander Duycka57fe232012-09-13 06:28:16 +00003366 static const u32 rsskey[10] = { 0xDA565A6D, 0xC20E5B25, 0x3D256741,
3367 0xB08FA343, 0xCB2BCAD0, 0xB4307BAE,
3368 0xA32DCB77, 0x0CF23080, 0x3BB7426A,
3369 0xFA01ACBE };
Alexander Duyck06cf2662009-10-27 15:53:25 +00003370
3371 /* Fill out hash function seeds */
Alexander Duycka57fe232012-09-13 06:28:16 +00003372 for (j = 0; j < 10; j++)
3373 wr32(E1000_RSSRK(j), rsskey[j]);
Alexander Duyck06cf2662009-10-27 15:53:25 +00003374
Alexander Duycka99955f2009-11-12 18:37:19 +00003375 num_rx_queues = adapter->rss_queues;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003376
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003377 switch (hw->mac.type) {
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003378 case e1000_82576:
3379 /* 82576 supports 2 RSS queues for SR-IOV */
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003380 if (adapter->vfs_allocated_count)
Alexander Duyck06cf2662009-10-27 15:53:25 +00003381 num_rx_queues = 2;
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003382 break;
3383 default:
3384 break;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003385 }
3386
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003387 if (adapter->rss_indir_tbl_init != num_rx_queues) {
3388 for (j = 0; j < IGB_RETA_SIZE; j++)
3389 adapter->rss_indir_tbl[j] = (j * num_rx_queues) / IGB_RETA_SIZE;
3390 adapter->rss_indir_tbl_init = num_rx_queues;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003391 }
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003392 igb_write_rss_indir_tbl(adapter);
Alexander Duyck06cf2662009-10-27 15:53:25 +00003393
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003394 /* Disable raw packet checksumming so that RSS hash is placed in
Alexander Duyck06cf2662009-10-27 15:53:25 +00003395 * descriptor on writeback. No need to enable TCP/UDP/IP checksum
3396 * offloads as they are enabled by default
3397 */
3398 rxcsum = rd32(E1000_RXCSUM);
3399 rxcsum |= E1000_RXCSUM_PCSD;
3400
3401 if (adapter->hw.mac.type >= e1000_82576)
3402 /* Enable Receive Checksum Offload for SCTP */
3403 rxcsum |= E1000_RXCSUM_CRCOFL;
3404
3405 /* Don't need to set TUOFL or IPOFL, they default to 1 */
3406 wr32(E1000_RXCSUM, rxcsum);
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003407
Akeem G. Abodunrin039454a2012-11-13 04:03:21 +00003408 /* Generate RSS hash based on packet types, TCP/UDP
3409 * port numbers and/or IPv4/v6 src and dst addresses
3410 */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003411 mrqc = E1000_MRQC_RSS_FIELD_IPV4 |
3412 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3413 E1000_MRQC_RSS_FIELD_IPV6 |
3414 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3415 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003416
Akeem G. Abodunrin039454a2012-11-13 04:03:21 +00003417 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
3418 mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP;
3419 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
3420 mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP;
3421
Alexander Duyck06cf2662009-10-27 15:53:25 +00003422 /* If VMDq is enabled then we set the appropriate mode for that, else
3423 * we default to RSS so that an RSS hash is calculated per packet even
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003424 * if we are only using one queue
3425 */
Alexander Duyck06cf2662009-10-27 15:53:25 +00003426 if (adapter->vfs_allocated_count) {
3427 if (hw->mac.type > e1000_82575) {
3428 /* Set the default pool for the PF's first queue */
3429 u32 vtctl = rd32(E1000_VT_CTL);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003430
Alexander Duyck06cf2662009-10-27 15:53:25 +00003431 vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK |
3432 E1000_VT_CTL_DISABLE_DEF_POOL);
3433 vtctl |= adapter->vfs_allocated_count <<
3434 E1000_VT_CTL_DEFAULT_POOL_SHIFT;
3435 wr32(E1000_VT_CTL, vtctl);
3436 }
Alexander Duycka99955f2009-11-12 18:37:19 +00003437 if (adapter->rss_queues > 1)
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003438 mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003439 else
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003440 mrqc |= E1000_MRQC_ENABLE_VMDQ;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003441 } else {
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003442 if (hw->mac.type != e1000_i211)
3443 mrqc |= E1000_MRQC_ENABLE_RSS_4Q;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003444 }
3445 igb_vmm_control(adapter);
3446
Alexander Duyck06cf2662009-10-27 15:53:25 +00003447 wr32(E1000_MRQC, mrqc);
3448}
3449
3450/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003451 * igb_setup_rctl - configure the receive control registers
3452 * @adapter: Board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003453 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003454void igb_setup_rctl(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08003455{
3456 struct e1000_hw *hw = &adapter->hw;
3457 u32 rctl;
Auke Kok9d5c8242008-01-24 02:22:38 -08003458
3459 rctl = rd32(E1000_RCTL);
3460
3461 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
Alexander Duyck69d728b2008-11-25 01:04:03 -08003462 rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
Auke Kok9d5c8242008-01-24 02:22:38 -08003463
Alexander Duyck69d728b2008-11-25 01:04:03 -08003464 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF |
Alexander Duyck28b07592009-02-06 23:20:31 +00003465 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
Auke Kok9d5c8242008-01-24 02:22:38 -08003466
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003467 /* enable stripping of CRC. It's unlikely this will break BMC
Auke Kok87cb7e82008-07-08 15:08:29 -07003468 * redirection as it did with e1000. Newer features require
3469 * that the HW strips the CRC.
Alexander Duyck73cd78f2009-02-12 18:16:59 +00003470 */
Auke Kok87cb7e82008-07-08 15:08:29 -07003471 rctl |= E1000_RCTL_SECRC;
Auke Kok9d5c8242008-01-24 02:22:38 -08003472
Alexander Duyck559e9c42009-10-27 23:52:50 +00003473 /* disable store bad packets and clear size bits. */
Alexander Duyckec54d7d2009-01-31 00:52:57 -08003474 rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256);
Auke Kok9d5c8242008-01-24 02:22:38 -08003475
Alexander Duyck6ec43fe2009-10-27 15:50:48 +00003476 /* enable LPE to prevent packets larger than max_frame_size */
3477 rctl |= E1000_RCTL_LPE;
Auke Kok9d5c8242008-01-24 02:22:38 -08003478
Alexander Duyck952f72a2009-10-27 15:51:07 +00003479 /* disable queue 0 to prevent tail write w/o re-config */
3480 wr32(E1000_RXDCTL(0), 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08003481
Alexander Duycke1739522009-02-19 20:39:44 -08003482 /* Attention!!! For SR-IOV PF driver operations you must enable
3483 * queue drop for all VF and PF queues to prevent head of line blocking
3484 * if an un-trusted VF does not provide descriptors to hardware.
3485 */
3486 if (adapter->vfs_allocated_count) {
Alexander Duycke1739522009-02-19 20:39:44 -08003487 /* set all queue drop enable bits */
3488 wr32(E1000_QDE, ALL_QUEUES);
Alexander Duycke1739522009-02-19 20:39:44 -08003489 }
3490
Ben Greear89eaefb2012-03-06 09:41:58 +00003491 /* This is useful for sniffing bad packets. */
3492 if (adapter->netdev->features & NETIF_F_RXALL) {
3493 /* UPE and MPE will be handled by normal PROMISC logic
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003494 * in e1000e_set_rx_mode
3495 */
Ben Greear89eaefb2012-03-06 09:41:58 +00003496 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3497 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3498 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3499
3500 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3501 E1000_RCTL_DPF | /* Allow filtered pause */
3502 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3503 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3504 * and that breaks VLANs.
3505 */
3506 }
3507
Auke Kok9d5c8242008-01-24 02:22:38 -08003508 wr32(E1000_RCTL, rctl);
3509}
3510
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003511static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003512 int vfn)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003513{
3514 struct e1000_hw *hw = &adapter->hw;
3515 u32 vmolr;
3516
3517 /* if it isn't the PF check to see if VFs are enabled and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003518 * increase the size to support vlan tags
3519 */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003520 if (vfn < adapter->vfs_allocated_count &&
3521 adapter->vf_data[vfn].vlans_enabled)
3522 size += VLAN_TAG_SIZE;
3523
3524 vmolr = rd32(E1000_VMOLR(vfn));
3525 vmolr &= ~E1000_VMOLR_RLPML_MASK;
3526 vmolr |= size | E1000_VMOLR_LPE;
3527 wr32(E1000_VMOLR(vfn), vmolr);
3528
3529 return 0;
3530}
3531
Auke Kok9d5c8242008-01-24 02:22:38 -08003532/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003533 * igb_rlpml_set - set maximum receive packet size
3534 * @adapter: board private structure
Alexander Duycke1739522009-02-19 20:39:44 -08003535 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003536 * Configure maximum receivable packet size.
Alexander Duycke1739522009-02-19 20:39:44 -08003537 **/
3538static void igb_rlpml_set(struct igb_adapter *adapter)
3539{
Alexander Duyck153285f2011-08-26 07:43:32 +00003540 u32 max_frame_size = adapter->max_frame_size;
Alexander Duycke1739522009-02-19 20:39:44 -08003541 struct e1000_hw *hw = &adapter->hw;
3542 u16 pf_id = adapter->vfs_allocated_count;
3543
Alexander Duycke1739522009-02-19 20:39:44 -08003544 if (pf_id) {
3545 igb_set_vf_rlpml(adapter, max_frame_size, pf_id);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003546 /* If we're in VMDQ or SR-IOV mode, then set global RLPML
Alexander Duyck153285f2011-08-26 07:43:32 +00003547 * to our max jumbo frame size, in case we need to enable
3548 * jumbo frames on one of the rings later.
3549 * This will not pass over-length frames into the default
3550 * queue because it's gated by the VMOLR.RLPML.
3551 */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003552 max_frame_size = MAX_JUMBO_FRAME_SIZE;
Alexander Duycke1739522009-02-19 20:39:44 -08003553 }
3554
3555 wr32(E1000_RLPML, max_frame_size);
3556}
3557
Williams, Mitch A8151d292010-02-10 01:44:24 +00003558static inline void igb_set_vmolr(struct igb_adapter *adapter,
3559 int vfn, bool aupe)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003560{
3561 struct e1000_hw *hw = &adapter->hw;
3562 u32 vmolr;
3563
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003564 /* This register exists only on 82576 and newer so if we are older then
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003565 * we should exit and do nothing
3566 */
3567 if (hw->mac.type < e1000_82576)
3568 return;
3569
3570 vmolr = rd32(E1000_VMOLR(vfn));
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003571 vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */
Stefan Assmanndc1edc62013-12-11 22:10:12 +00003572 if (hw->mac.type == e1000_i350) {
3573 u32 dvmolr;
3574
3575 dvmolr = rd32(E1000_DVMOLR(vfn));
3576 dvmolr |= E1000_DVMOLR_STRVLAN;
3577 wr32(E1000_DVMOLR(vfn), dvmolr);
3578 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00003579 if (aupe)
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003580 vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */
Williams, Mitch A8151d292010-02-10 01:44:24 +00003581 else
3582 vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003583
3584 /* clear all bits that might not be set */
3585 vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE);
3586
Alexander Duycka99955f2009-11-12 18:37:19 +00003587 if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003588 vmolr |= E1000_VMOLR_RSSE; /* enable RSS */
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003589 /* for VMDq only allow the VFs and pool 0 to accept broadcast and
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003590 * multicast packets
3591 */
3592 if (vfn <= adapter->vfs_allocated_count)
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003593 vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003594
3595 wr32(E1000_VMOLR(vfn), vmolr);
3596}
3597
Alexander Duycke1739522009-02-19 20:39:44 -08003598/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003599 * igb_configure_rx_ring - Configure a receive ring after Reset
3600 * @adapter: board private structure
3601 * @ring: receive ring to be configured
Alexander Duyck85b430b2009-10-27 15:50:29 +00003602 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003603 * Configure the Rx unit of the MAC after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003604 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003605void igb_configure_rx_ring(struct igb_adapter *adapter,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003606 struct igb_ring *ring)
Alexander Duyck85b430b2009-10-27 15:50:29 +00003607{
3608 struct e1000_hw *hw = &adapter->hw;
3609 u64 rdba = ring->dma;
3610 int reg_idx = ring->reg_idx;
Alexander Duycka74420e2011-08-26 07:43:27 +00003611 u32 srrctl = 0, rxdctl = 0;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003612
3613 /* disable the queue */
Alexander Duycka74420e2011-08-26 07:43:27 +00003614 wr32(E1000_RXDCTL(reg_idx), 0);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003615
3616 /* Set DMA base address registers */
3617 wr32(E1000_RDBAL(reg_idx),
3618 rdba & 0x00000000ffffffffULL);
3619 wr32(E1000_RDBAH(reg_idx), rdba >> 32);
3620 wr32(E1000_RDLEN(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003621 ring->count * sizeof(union e1000_adv_rx_desc));
Alexander Duyck85b430b2009-10-27 15:50:29 +00003622
3623 /* initialize head and tail */
Alexander Duyckfce99e32009-10-27 15:51:27 +00003624 ring->tail = hw->hw_addr + E1000_RDT(reg_idx);
Alexander Duycka74420e2011-08-26 07:43:27 +00003625 wr32(E1000_RDH(reg_idx), 0);
Alexander Duyckfce99e32009-10-27 15:51:27 +00003626 writel(0, ring->tail);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003627
Alexander Duyck952f72a2009-10-27 15:51:07 +00003628 /* set descriptor configuration */
Alexander Duyck44390ca2011-08-26 07:43:38 +00003629 srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
Alexander Duyckde78d1f2012-09-25 00:31:12 +00003630 srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003631 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
Alexander Duyck06218a82011-08-26 07:46:55 +00003632 if (hw->mac.type >= e1000_82580)
Nick Nunley757b77e2010-03-26 11:36:47 +00003633 srrctl |= E1000_SRRCTL_TIMESTAMP;
Nick Nunleye6bdb6f2010-02-17 01:03:38 +00003634 /* Only set Drop Enable if we are supporting multiple queues */
3635 if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1)
3636 srrctl |= E1000_SRRCTL_DROP_EN;
Alexander Duyck952f72a2009-10-27 15:51:07 +00003637
3638 wr32(E1000_SRRCTL(reg_idx), srrctl);
3639
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003640 /* set filtering for VMDQ pools */
Williams, Mitch A8151d292010-02-10 01:44:24 +00003641 igb_set_vmolr(adapter, reg_idx & 0x7, true);
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003642
Alexander Duyck85b430b2009-10-27 15:50:29 +00003643 rxdctl |= IGB_RX_PTHRESH;
3644 rxdctl |= IGB_RX_HTHRESH << 8;
3645 rxdctl |= IGB_RX_WTHRESH << 16;
Alexander Duycka74420e2011-08-26 07:43:27 +00003646
3647 /* enable receive descriptor fetching */
3648 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003649 wr32(E1000_RXDCTL(reg_idx), rxdctl);
3650}
3651
3652/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003653 * igb_configure_rx - Configure receive Unit after Reset
3654 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003655 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003656 * Configure the Rx unit of the MAC after a reset.
Auke Kok9d5c8242008-01-24 02:22:38 -08003657 **/
3658static void igb_configure_rx(struct igb_adapter *adapter)
3659{
Hannes Eder91075842009-02-18 19:36:04 -08003660 int i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003661
Alexander Duyck68d480c2009-10-05 06:33:08 +00003662 /* set UTA to appropriate mode */
3663 igb_set_uta(adapter);
3664
Alexander Duyck26ad9172009-10-05 06:32:49 +00003665 /* set the correct pool for the PF default MAC address in entry 0 */
3666 igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003667 adapter->vfs_allocated_count);
Alexander Duyck26ad9172009-10-05 06:32:49 +00003668
Alexander Duyck06cf2662009-10-27 15:53:25 +00003669 /* Setup the HW Rx Head and Tail Descriptor Pointers and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003670 * the Base and Length of the Rx Descriptor Ring
3671 */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00003672 for (i = 0; i < adapter->num_rx_queues; i++)
3673 igb_configure_rx_ring(adapter, adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003674}
3675
3676/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003677 * igb_free_tx_resources - Free Tx Resources per Queue
3678 * @tx_ring: Tx descriptor ring for a specific queue
Auke Kok9d5c8242008-01-24 02:22:38 -08003679 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003680 * Free all transmit software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003681 **/
Alexander Duyck68fd9912008-11-20 00:48:10 -08003682void igb_free_tx_resources(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003683{
Mitch Williams3b644cf2008-06-27 10:59:48 -07003684 igb_clean_tx_ring(tx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08003685
Alexander Duyck06034642011-08-26 07:44:22 +00003686 vfree(tx_ring->tx_buffer_info);
3687 tx_ring->tx_buffer_info = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003688
Alexander Duyck439705e2009-10-27 23:49:20 +00003689 /* if not set, then don't free */
3690 if (!tx_ring->desc)
3691 return;
3692
Alexander Duyck59d71982010-04-27 13:09:25 +00003693 dma_free_coherent(tx_ring->dev, tx_ring->size,
3694 tx_ring->desc, tx_ring->dma);
Auke Kok9d5c8242008-01-24 02:22:38 -08003695
3696 tx_ring->desc = NULL;
3697}
3698
3699/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003700 * igb_free_all_tx_resources - Free Tx Resources for All Queues
3701 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003702 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003703 * Free all transmit software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003704 **/
3705static void igb_free_all_tx_resources(struct igb_adapter *adapter)
3706{
3707 int i;
3708
3709 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003710 igb_free_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003711}
3712
Alexander Duyckebe42d12011-08-26 07:45:09 +00003713void igb_unmap_and_free_tx_resource(struct igb_ring *ring,
3714 struct igb_tx_buffer *tx_buffer)
Auke Kok9d5c8242008-01-24 02:22:38 -08003715{
Alexander Duyckebe42d12011-08-26 07:45:09 +00003716 if (tx_buffer->skb) {
3717 dev_kfree_skb_any(tx_buffer->skb);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003718 if (dma_unmap_len(tx_buffer, len))
Alexander Duyckebe42d12011-08-26 07:45:09 +00003719 dma_unmap_single(ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003720 dma_unmap_addr(tx_buffer, dma),
3721 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00003722 DMA_TO_DEVICE);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003723 } else if (dma_unmap_len(tx_buffer, len)) {
Alexander Duyckebe42d12011-08-26 07:45:09 +00003724 dma_unmap_page(ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003725 dma_unmap_addr(tx_buffer, dma),
3726 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00003727 DMA_TO_DEVICE);
Alexander Duyck6366ad32009-12-02 16:47:18 +00003728 }
Alexander Duyckebe42d12011-08-26 07:45:09 +00003729 tx_buffer->next_to_watch = NULL;
3730 tx_buffer->skb = NULL;
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003731 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckebe42d12011-08-26 07:45:09 +00003732 /* buffer_info must be completely set up in the transmit path */
Auke Kok9d5c8242008-01-24 02:22:38 -08003733}
3734
3735/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003736 * igb_clean_tx_ring - Free Tx Buffers
3737 * @tx_ring: ring to be cleaned
Auke Kok9d5c8242008-01-24 02:22:38 -08003738 **/
Mitch Williams3b644cf2008-06-27 10:59:48 -07003739static void igb_clean_tx_ring(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003740{
Alexander Duyck06034642011-08-26 07:44:22 +00003741 struct igb_tx_buffer *buffer_info;
Auke Kok9d5c8242008-01-24 02:22:38 -08003742 unsigned long size;
Alexander Duyck6ad4edf2011-08-26 07:45:26 +00003743 u16 i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003744
Alexander Duyck06034642011-08-26 07:44:22 +00003745 if (!tx_ring->tx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003746 return;
3747 /* Free all the Tx ring sk_buffs */
3748
3749 for (i = 0; i < tx_ring->count; i++) {
Alexander Duyck06034642011-08-26 07:44:22 +00003750 buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyck80785292009-10-27 15:51:47 +00003751 igb_unmap_and_free_tx_resource(tx_ring, buffer_info);
Auke Kok9d5c8242008-01-24 02:22:38 -08003752 }
3753
John Fastabenddad8a3b2012-04-23 12:22:39 +00003754 netdev_tx_reset_queue(txring_txq(tx_ring));
3755
Alexander Duyck06034642011-08-26 07:44:22 +00003756 size = sizeof(struct igb_tx_buffer) * tx_ring->count;
3757 memset(tx_ring->tx_buffer_info, 0, size);
Auke Kok9d5c8242008-01-24 02:22:38 -08003758
3759 /* Zero out the descriptor ring */
Auke Kok9d5c8242008-01-24 02:22:38 -08003760 memset(tx_ring->desc, 0, tx_ring->size);
3761
3762 tx_ring->next_to_use = 0;
3763 tx_ring->next_to_clean = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003764}
3765
3766/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003767 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
3768 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003769 **/
3770static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
3771{
3772 int i;
3773
3774 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003775 igb_clean_tx_ring(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003776}
3777
3778/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003779 * igb_free_rx_resources - Free Rx Resources
3780 * @rx_ring: ring to clean the resources from
Auke Kok9d5c8242008-01-24 02:22:38 -08003781 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003782 * Free all receive software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003783 **/
Alexander Duyck68fd9912008-11-20 00:48:10 -08003784void igb_free_rx_resources(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003785{
Mitch Williams3b644cf2008-06-27 10:59:48 -07003786 igb_clean_rx_ring(rx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08003787
Alexander Duyck06034642011-08-26 07:44:22 +00003788 vfree(rx_ring->rx_buffer_info);
3789 rx_ring->rx_buffer_info = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003790
Alexander Duyck439705e2009-10-27 23:49:20 +00003791 /* if not set, then don't free */
3792 if (!rx_ring->desc)
3793 return;
3794
Alexander Duyck59d71982010-04-27 13:09:25 +00003795 dma_free_coherent(rx_ring->dev, rx_ring->size,
3796 rx_ring->desc, rx_ring->dma);
Auke Kok9d5c8242008-01-24 02:22:38 -08003797
3798 rx_ring->desc = NULL;
3799}
3800
3801/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003802 * igb_free_all_rx_resources - Free Rx Resources for All Queues
3803 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003804 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003805 * Free all receive software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003806 **/
3807static void igb_free_all_rx_resources(struct igb_adapter *adapter)
3808{
3809 int i;
3810
3811 for (i = 0; i < adapter->num_rx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003812 igb_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003813}
3814
3815/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003816 * igb_clean_rx_ring - Free Rx Buffers per Queue
3817 * @rx_ring: ring to free buffers from
Auke Kok9d5c8242008-01-24 02:22:38 -08003818 **/
Mitch Williams3b644cf2008-06-27 10:59:48 -07003819static void igb_clean_rx_ring(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003820{
Auke Kok9d5c8242008-01-24 02:22:38 -08003821 unsigned long size;
Alexander Duyckc023cd82011-08-26 07:43:43 +00003822 u16 i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003823
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003824 if (rx_ring->skb)
3825 dev_kfree_skb(rx_ring->skb);
3826 rx_ring->skb = NULL;
3827
Alexander Duyck06034642011-08-26 07:44:22 +00003828 if (!rx_ring->rx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003829 return;
Alexander Duyck439705e2009-10-27 23:49:20 +00003830
Auke Kok9d5c8242008-01-24 02:22:38 -08003831 /* Free all the Rx ring sk_buffs */
3832 for (i = 0; i < rx_ring->count; i++) {
Alexander Duyck06034642011-08-26 07:44:22 +00003833 struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9d5c8242008-01-24 02:22:38 -08003834
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003835 if (!buffer_info->page)
3836 continue;
3837
3838 dma_unmap_page(rx_ring->dev,
3839 buffer_info->dma,
3840 PAGE_SIZE,
3841 DMA_FROM_DEVICE);
3842 __free_page(buffer_info->page);
3843
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003844 buffer_info->page = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003845 }
3846
Alexander Duyck06034642011-08-26 07:44:22 +00003847 size = sizeof(struct igb_rx_buffer) * rx_ring->count;
3848 memset(rx_ring->rx_buffer_info, 0, size);
Auke Kok9d5c8242008-01-24 02:22:38 -08003849
3850 /* Zero out the descriptor ring */
3851 memset(rx_ring->desc, 0, rx_ring->size);
3852
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003853 rx_ring->next_to_alloc = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003854 rx_ring->next_to_clean = 0;
3855 rx_ring->next_to_use = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003856}
3857
3858/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003859 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
3860 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003861 **/
3862static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
3863{
3864 int i;
3865
3866 for (i = 0; i < adapter->num_rx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003867 igb_clean_rx_ring(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003868}
3869
3870/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003871 * igb_set_mac - Change the Ethernet Address of the NIC
3872 * @netdev: network interface device structure
3873 * @p: pointer to an address structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003874 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003875 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003876 **/
3877static int igb_set_mac(struct net_device *netdev, void *p)
3878{
3879 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck28b07592009-02-06 23:20:31 +00003880 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08003881 struct sockaddr *addr = p;
3882
3883 if (!is_valid_ether_addr(addr->sa_data))
3884 return -EADDRNOTAVAIL;
3885
3886 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Alexander Duyck28b07592009-02-06 23:20:31 +00003887 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9d5c8242008-01-24 02:22:38 -08003888
Alexander Duyck26ad9172009-10-05 06:32:49 +00003889 /* set the correct pool for the new PF MAC address in entry 0 */
3890 igb_rar_set_qsel(adapter, hw->mac.addr, 0,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003891 adapter->vfs_allocated_count);
Alexander Duycke1739522009-02-19 20:39:44 -08003892
Auke Kok9d5c8242008-01-24 02:22:38 -08003893 return 0;
3894}
3895
3896/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003897 * igb_write_mc_addr_list - write multicast addresses to MTA
3898 * @netdev: network interface device structure
Alexander Duyck68d480c2009-10-05 06:33:08 +00003899 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003900 * Writes multicast address list to the MTA hash table.
3901 * Returns: -ENOMEM on failure
3902 * 0 on no addresses written
3903 * X on writing X addresses to MTA
Alexander Duyck68d480c2009-10-05 06:33:08 +00003904 **/
3905static int igb_write_mc_addr_list(struct net_device *netdev)
3906{
3907 struct igb_adapter *adapter = netdev_priv(netdev);
3908 struct e1000_hw *hw = &adapter->hw;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003909 struct netdev_hw_addr *ha;
Alexander Duyck68d480c2009-10-05 06:33:08 +00003910 u8 *mta_list;
Alexander Duyck68d480c2009-10-05 06:33:08 +00003911 int i;
3912
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003913 if (netdev_mc_empty(netdev)) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003914 /* nothing to program, so clear mc list */
3915 igb_update_mc_addr_list(hw, NULL, 0);
3916 igb_restore_vf_multicasts(adapter);
3917 return 0;
3918 }
3919
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003920 mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003921 if (!mta_list)
3922 return -ENOMEM;
3923
Alexander Duyck68d480c2009-10-05 06:33:08 +00003924 /* The shared function expects a packed array of only addresses. */
Jiri Pirko48e2f182010-02-22 09:22:26 +00003925 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003926 netdev_for_each_mc_addr(ha, netdev)
3927 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003928
Alexander Duyck68d480c2009-10-05 06:33:08 +00003929 igb_update_mc_addr_list(hw, mta_list, i);
3930 kfree(mta_list);
3931
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003932 return netdev_mc_count(netdev);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003933}
3934
3935/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003936 * igb_write_uc_addr_list - write unicast addresses to RAR table
3937 * @netdev: network interface device structure
Alexander Duyck68d480c2009-10-05 06:33:08 +00003938 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003939 * Writes unicast address list to the RAR table.
3940 * Returns: -ENOMEM on failure/insufficient address space
3941 * 0 on no addresses written
3942 * X on writing X addresses to the RAR table
Alexander Duyck68d480c2009-10-05 06:33:08 +00003943 **/
3944static int igb_write_uc_addr_list(struct net_device *netdev)
3945{
3946 struct igb_adapter *adapter = netdev_priv(netdev);
3947 struct e1000_hw *hw = &adapter->hw;
3948 unsigned int vfn = adapter->vfs_allocated_count;
3949 unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1);
3950 int count = 0;
3951
3952 /* return ENOMEM indicating insufficient memory for addresses */
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003953 if (netdev_uc_count(netdev) > rar_entries)
Alexander Duyck68d480c2009-10-05 06:33:08 +00003954 return -ENOMEM;
3955
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003956 if (!netdev_uc_empty(netdev) && rar_entries) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003957 struct netdev_hw_addr *ha;
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003958
3959 netdev_for_each_uc_addr(ha, netdev) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003960 if (!rar_entries)
3961 break;
3962 igb_rar_set_qsel(adapter, ha->addr,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003963 rar_entries--,
3964 vfn);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003965 count++;
3966 }
3967 }
3968 /* write the addresses in reverse order to avoid write combining */
3969 for (; rar_entries > 0 ; rar_entries--) {
3970 wr32(E1000_RAH(rar_entries), 0);
3971 wr32(E1000_RAL(rar_entries), 0);
3972 }
3973 wrfl();
3974
3975 return count;
3976}
3977
3978/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003979 * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
3980 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003981 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003982 * The set_rx_mode entry point is called whenever the unicast or multicast
3983 * address lists or the network interface flags are updated. This routine is
3984 * responsible for configuring the hardware for proper unicast, multicast,
3985 * promiscuous mode, and all-multi behavior.
Auke Kok9d5c8242008-01-24 02:22:38 -08003986 **/
Alexander Duyckff41f8d2009-09-03 14:48:56 +00003987static void igb_set_rx_mode(struct net_device *netdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08003988{
3989 struct igb_adapter *adapter = netdev_priv(netdev);
3990 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck68d480c2009-10-05 06:33:08 +00003991 unsigned int vfn = adapter->vfs_allocated_count;
3992 u32 rctl, vmolr = 0;
3993 int count;
Auke Kok9d5c8242008-01-24 02:22:38 -08003994
3995 /* Check for Promiscuous and All Multicast modes */
Auke Kok9d5c8242008-01-24 02:22:38 -08003996 rctl = rd32(E1000_RCTL);
3997
Alexander Duyck68d480c2009-10-05 06:33:08 +00003998 /* clear the effected bits */
3999 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE);
4000
Patrick McHardy746b9f02008-07-16 20:15:45 -07004001 if (netdev->flags & IFF_PROMISC) {
Greg Rose6f3dc3192013-03-26 06:19:41 +00004002 /* retain VLAN HW filtering if in VT mode */
Emil Tantilov7e448922013-07-26 05:46:36 -07004003 if (adapter->vfs_allocated_count)
Greg Rose6f3dc3192013-03-26 06:19:41 +00004004 rctl |= E1000_RCTL_VFE;
Auke Kok9d5c8242008-01-24 02:22:38 -08004005 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Alexander Duyck68d480c2009-10-05 06:33:08 +00004006 vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME);
Patrick McHardy746b9f02008-07-16 20:15:45 -07004007 } else {
Alexander Duyck68d480c2009-10-05 06:33:08 +00004008 if (netdev->flags & IFF_ALLMULTI) {
Patrick McHardy746b9f02008-07-16 20:15:45 -07004009 rctl |= E1000_RCTL_MPE;
Alexander Duyck68d480c2009-10-05 06:33:08 +00004010 vmolr |= E1000_VMOLR_MPME;
4011 } else {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004012 /* Write addresses to the MTA, if the attempt fails
Lucas De Marchi25985ed2011-03-30 22:57:33 -03004013 * then we should just turn on promiscuous mode so
Alexander Duyck68d480c2009-10-05 06:33:08 +00004014 * that we can at least receive multicast traffic
4015 */
4016 count = igb_write_mc_addr_list(netdev);
4017 if (count < 0) {
4018 rctl |= E1000_RCTL_MPE;
4019 vmolr |= E1000_VMOLR_MPME;
4020 } else if (count) {
4021 vmolr |= E1000_VMOLR_ROMPE;
4022 }
4023 }
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004024 /* Write addresses to available RAR registers, if there is not
Alexander Duyck68d480c2009-10-05 06:33:08 +00004025 * sufficient space to store all the addresses then enable
Lucas De Marchi25985ed2011-03-30 22:57:33 -03004026 * unicast promiscuous mode
Alexander Duyck68d480c2009-10-05 06:33:08 +00004027 */
4028 count = igb_write_uc_addr_list(netdev);
4029 if (count < 0) {
Alexander Duyckff41f8d2009-09-03 14:48:56 +00004030 rctl |= E1000_RCTL_UPE;
Alexander Duyck68d480c2009-10-05 06:33:08 +00004031 vmolr |= E1000_VMOLR_ROPE;
4032 }
Patrick McHardy78ed11a2008-07-16 20:16:14 -07004033 rctl |= E1000_RCTL_VFE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07004034 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004035 wr32(E1000_RCTL, rctl);
4036
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004037 /* In order to support SR-IOV and eventually VMDq it is necessary to set
Alexander Duyck68d480c2009-10-05 06:33:08 +00004038 * the VMOLR to enable the appropriate modes. Without this workaround
4039 * we will have issues with VLAN tag stripping not being done for frames
4040 * that are only arriving because we are the default pool
4041 */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00004042 if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350))
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004043 return;
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004044
Alexander Duyck68d480c2009-10-05 06:33:08 +00004045 vmolr |= rd32(E1000_VMOLR(vfn)) &
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004046 ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE);
Alexander Duyck68d480c2009-10-05 06:33:08 +00004047 wr32(E1000_VMOLR(vfn), vmolr);
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004048 igb_restore_vf_multicasts(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08004049}
4050
Greg Rose13800462010-11-06 02:08:26 +00004051static void igb_check_wvbr(struct igb_adapter *adapter)
4052{
4053 struct e1000_hw *hw = &adapter->hw;
4054 u32 wvbr = 0;
4055
4056 switch (hw->mac.type) {
4057 case e1000_82576:
4058 case e1000_i350:
Carolyn Wyborny81ad8072014-04-11 01:46:13 +00004059 wvbr = rd32(E1000_WVBR);
4060 if (!wvbr)
Greg Rose13800462010-11-06 02:08:26 +00004061 return;
4062 break;
4063 default:
4064 break;
4065 }
4066
4067 adapter->wvbr |= wvbr;
4068}
4069
4070#define IGB_STAGGERED_QUEUE_OFFSET 8
4071
4072static void igb_spoof_check(struct igb_adapter *adapter)
4073{
4074 int j;
4075
4076 if (!adapter->wvbr)
4077 return;
4078
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004079 for (j = 0; j < adapter->vfs_allocated_count; j++) {
Greg Rose13800462010-11-06 02:08:26 +00004080 if (adapter->wvbr & (1 << j) ||
4081 adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) {
4082 dev_warn(&adapter->pdev->dev,
4083 "Spoof event(s) detected on VF %d\n", j);
4084 adapter->wvbr &=
4085 ~((1 << j) |
4086 (1 << (j + IGB_STAGGERED_QUEUE_OFFSET)));
4087 }
4088 }
4089}
4090
Auke Kok9d5c8242008-01-24 02:22:38 -08004091/* Need to wait a few seconds after link up to get diagnostic information from
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004092 * the phy
4093 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004094static void igb_update_phy_info(unsigned long data)
4095{
4096 struct igb_adapter *adapter = (struct igb_adapter *) data;
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08004097 igb_get_phy_info(&adapter->hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08004098}
4099
4100/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004101 * igb_has_link - check shared code for link and determine up/down
4102 * @adapter: pointer to driver private info
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004103 **/
Nick Nunley31455352010-02-17 01:01:21 +00004104bool igb_has_link(struct igb_adapter *adapter)
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004105{
4106 struct e1000_hw *hw = &adapter->hw;
4107 bool link_active = false;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004108
4109 /* get_link_status is set on LSC (link status) interrupt or
4110 * rx sequence error interrupt. get_link_status will stay
4111 * false until the e1000_check_for_link establishes link
4112 * for copper adapters ONLY
4113 */
4114 switch (hw->phy.media_type) {
4115 case e1000_media_type_copper:
Akeem G Abodunrine5c33702013-06-06 01:31:09 +00004116 if (!hw->mac.get_link_status)
4117 return true;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004118 case e1000_media_type_internal_serdes:
Akeem G Abodunrine5c33702013-06-06 01:31:09 +00004119 hw->mac.ops.check_for_link(hw);
4120 link_active = !hw->mac.get_link_status;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004121 break;
4122 default:
4123 case e1000_media_type_unknown:
4124 break;
4125 }
4126
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004127 if (((hw->mac.type == e1000_i210) ||
4128 (hw->mac.type == e1000_i211)) &&
4129 (hw->phy.id == I210_I_PHY_ID)) {
4130 if (!netif_carrier_ok(adapter->netdev)) {
4131 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
4132 } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) {
4133 adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE;
4134 adapter->link_check_timeout = jiffies;
4135 }
4136 }
4137
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004138 return link_active;
4139}
4140
Stefan Assmann563988d2011-04-05 04:27:15 +00004141static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event)
4142{
4143 bool ret = false;
4144 u32 ctrl_ext, thstat;
4145
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00004146 /* check for thermal sensor event on i350 copper only */
Stefan Assmann563988d2011-04-05 04:27:15 +00004147 if (hw->mac.type == e1000_i350) {
4148 thstat = rd32(E1000_THSTAT);
4149 ctrl_ext = rd32(E1000_CTRL_EXT);
4150
4151 if ((hw->phy.media_type == e1000_media_type_copper) &&
Akeem G. Abodunrin5c17a202013-01-29 10:15:31 +00004152 !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII))
Stefan Assmann563988d2011-04-05 04:27:15 +00004153 ret = !!(thstat & event);
Stefan Assmann563988d2011-04-05 04:27:15 +00004154 }
4155
4156 return ret;
4157}
4158
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004159/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004160 * igb_watchdog - Timer Call-back
4161 * @data: pointer to adapter cast into an unsigned long
Auke Kok9d5c8242008-01-24 02:22:38 -08004162 **/
4163static void igb_watchdog(unsigned long data)
4164{
4165 struct igb_adapter *adapter = (struct igb_adapter *)data;
4166 /* Do the rest outside of interrupt context */
4167 schedule_work(&adapter->watchdog_task);
4168}
4169
4170static void igb_watchdog_task(struct work_struct *work)
4171{
4172 struct igb_adapter *adapter = container_of(work,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004173 struct igb_adapter,
4174 watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08004175 struct e1000_hw *hw = &adapter->hw;
Koki Sanagic0ba4772013-01-16 11:05:53 +00004176 struct e1000_phy_info *phy = &hw->phy;
Auke Kok9d5c8242008-01-24 02:22:38 -08004177 struct net_device *netdev = adapter->netdev;
Stefan Assmann563988d2011-04-05 04:27:15 +00004178 u32 link;
Alexander Duyck7a6ea552008-08-26 04:25:03 -07004179 int i;
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004180 u32 connsw;
Auke Kok9d5c8242008-01-24 02:22:38 -08004181
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004182 link = igb_has_link(adapter);
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004183
4184 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) {
4185 if (time_after(jiffies, (adapter->link_check_timeout + HZ)))
4186 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
4187 else
4188 link = false;
4189 }
4190
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004191 /* Force link down if we have fiber to swap to */
4192 if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
4193 if (hw->phy.media_type == e1000_media_type_copper) {
4194 connsw = rd32(E1000_CONNSW);
4195 if (!(connsw & E1000_CONNSW_AUTOSENSE_EN))
4196 link = 0;
4197 }
4198 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004199 if (link) {
Carolyn Wyborny2bdfc4e2013-10-17 05:23:01 +00004200 /* Perform a reset if the media type changed. */
4201 if (hw->dev_spec._82575.media_changed) {
4202 hw->dev_spec._82575.media_changed = false;
4203 adapter->flags |= IGB_FLAG_MEDIA_RESET;
4204 igb_reset(adapter);
4205 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004206 /* Cancel scheduled suspend requests. */
4207 pm_runtime_resume(netdev->dev.parent);
4208
Auke Kok9d5c8242008-01-24 02:22:38 -08004209 if (!netif_carrier_ok(netdev)) {
4210 u32 ctrl;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004211
Alexander Duyck330a6d62009-10-27 23:51:35 +00004212 hw->mac.ops.get_speed_and_duplex(hw,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004213 &adapter->link_speed,
4214 &adapter->link_duplex);
Auke Kok9d5c8242008-01-24 02:22:38 -08004215
4216 ctrl = rd32(E1000_CTRL);
Alexander Duyck527d47c2008-11-27 00:21:39 -08004217 /* Links status message must follow this format */
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004218 netdev_info(netdev,
4219 "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
Alexander Duyck559e9c42009-10-27 23:52:50 +00004220 netdev->name,
4221 adapter->link_speed,
4222 adapter->link_duplex == FULL_DUPLEX ?
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004223 "Full" : "Half",
4224 (ctrl & E1000_CTRL_TFCE) &&
4225 (ctrl & E1000_CTRL_RFCE) ? "RX/TX" :
4226 (ctrl & E1000_CTRL_RFCE) ? "RX" :
4227 (ctrl & E1000_CTRL_TFCE) ? "TX" : "None");
Auke Kok9d5c8242008-01-24 02:22:38 -08004228
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00004229 /* disable EEE if enabled */
4230 if ((adapter->flags & IGB_FLAG_EEE) &&
4231 (adapter->link_duplex == HALF_DUPLEX)) {
4232 dev_info(&adapter->pdev->dev,
4233 "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n");
4234 adapter->hw.dev_spec._82575.eee_disable = true;
4235 adapter->flags &= ~IGB_FLAG_EEE;
4236 }
4237
Koki Sanagic0ba4772013-01-16 11:05:53 +00004238 /* check if SmartSpeed worked */
4239 igb_check_downshift(hw);
4240 if (phy->speed_downgraded)
4241 netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n");
4242
Stefan Assmann563988d2011-04-05 04:27:15 +00004243 /* check for thermal sensor event */
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004244 if (igb_thermal_sensor_event(hw,
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004245 E1000_THSTAT_LINK_THROTTLE))
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004246 netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n");
Stefan Assmann563988d2011-04-05 04:27:15 +00004247
Emil Tantilovd07f3e32010-03-23 18:34:57 +00004248 /* adjust timeout factor according to speed/duplex */
Auke Kok9d5c8242008-01-24 02:22:38 -08004249 adapter->tx_timeout_factor = 1;
4250 switch (adapter->link_speed) {
4251 case SPEED_10:
Auke Kok9d5c8242008-01-24 02:22:38 -08004252 adapter->tx_timeout_factor = 14;
4253 break;
4254 case SPEED_100:
Auke Kok9d5c8242008-01-24 02:22:38 -08004255 /* maybe add some timeout factor ? */
4256 break;
4257 }
4258
4259 netif_carrier_on(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08004260
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004261 igb_ping_all_vfs(adapter);
Lior Levy17dc5662011-02-08 02:28:46 +00004262 igb_check_vf_rate_limit(adapter);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004263
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004264 /* link state has changed, schedule phy info update */
Auke Kok9d5c8242008-01-24 02:22:38 -08004265 if (!test_bit(__IGB_DOWN, &adapter->state))
4266 mod_timer(&adapter->phy_info_timer,
4267 round_jiffies(jiffies + 2 * HZ));
4268 }
4269 } else {
4270 if (netif_carrier_ok(netdev)) {
4271 adapter->link_speed = 0;
4272 adapter->link_duplex = 0;
Stefan Assmann563988d2011-04-05 04:27:15 +00004273
4274 /* check for thermal sensor event */
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004275 if (igb_thermal_sensor_event(hw,
4276 E1000_THSTAT_PWR_DOWN)) {
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004277 netdev_err(netdev, "The network adapter was stopped because it overheated\n");
Carolyn Wyborny7ef5ed12011-03-12 08:59:47 +00004278 }
Stefan Assmann563988d2011-04-05 04:27:15 +00004279
Alexander Duyck527d47c2008-11-27 00:21:39 -08004280 /* Links status message must follow this format */
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004281 netdev_info(netdev, "igb: %s NIC Link is Down\n",
Alexander Duyck527d47c2008-11-27 00:21:39 -08004282 netdev->name);
Auke Kok9d5c8242008-01-24 02:22:38 -08004283 netif_carrier_off(netdev);
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004284
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004285 igb_ping_all_vfs(adapter);
4286
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004287 /* link state has changed, schedule phy info update */
Auke Kok9d5c8242008-01-24 02:22:38 -08004288 if (!test_bit(__IGB_DOWN, &adapter->state))
4289 mod_timer(&adapter->phy_info_timer,
4290 round_jiffies(jiffies + 2 * HZ));
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004291
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004292 /* link is down, time to check for alternate media */
4293 if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
4294 igb_check_swap_media(adapter);
4295 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
4296 schedule_work(&adapter->reset_task);
4297 /* return immediately */
4298 return;
4299 }
4300 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004301 pm_schedule_suspend(netdev->dev.parent,
4302 MSEC_PER_SEC * 5);
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004303
4304 /* also check for alternate media here */
4305 } else if (!netif_carrier_ok(netdev) &&
4306 (adapter->flags & IGB_FLAG_MAS_ENABLE)) {
4307 igb_check_swap_media(adapter);
4308 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
4309 schedule_work(&adapter->reset_task);
4310 /* return immediately */
4311 return;
4312 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004313 }
4314 }
4315
Eric Dumazet12dcd862010-10-15 17:27:10 +00004316 spin_lock(&adapter->stats64_lock);
4317 igb_update_stats(adapter, &adapter->stats64);
4318 spin_unlock(&adapter->stats64_lock);
Auke Kok9d5c8242008-01-24 02:22:38 -08004319
Alexander Duyckdbabb062009-11-12 18:38:16 +00004320 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00004321 struct igb_ring *tx_ring = adapter->tx_ring[i];
Alexander Duyckdbabb062009-11-12 18:38:16 +00004322 if (!netif_carrier_ok(netdev)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004323 /* We've lost link, so the controller stops DMA,
4324 * but we've got queued Tx work that's never going
4325 * to get done, so reset controller to flush Tx.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004326 * (Do the reset outside of interrupt context).
4327 */
Alexander Duyckdbabb062009-11-12 18:38:16 +00004328 if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) {
4329 adapter->tx_timeout_count++;
4330 schedule_work(&adapter->reset_task);
4331 /* return immediately since reset is imminent */
4332 return;
4333 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004334 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004335
Alexander Duyckdbabb062009-11-12 18:38:16 +00004336 /* Force detection of hung controller every watchdog period */
Alexander Duyck6d095fa2011-08-26 07:46:19 +00004337 set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
Alexander Duyckdbabb062009-11-12 18:38:16 +00004338 }
Alexander Duyckf7ba2052009-10-27 23:48:51 +00004339
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004340 /* Cause software interrupt to ensure Rx ring is cleaned */
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00004341 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck047e0032009-10-27 15:49:27 +00004342 u32 eics = 0;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004343
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00004344 for (i = 0; i < adapter->num_q_vectors; i++)
4345 eics |= adapter->q_vector[i]->eims_value;
Alexander Duyck7a6ea552008-08-26 04:25:03 -07004346 wr32(E1000_EICS, eics);
4347 } else {
4348 wr32(E1000_ICS, E1000_ICS_RXDMT0);
4349 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004350
Greg Rose13800462010-11-06 02:08:26 +00004351 igb_spoof_check(adapter);
Matthew Vickfc580752012-12-13 07:20:35 +00004352 igb_ptp_rx_hang(adapter);
Greg Rose13800462010-11-06 02:08:26 +00004353
Auke Kok9d5c8242008-01-24 02:22:38 -08004354 /* Reset the timer */
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004355 if (!test_bit(__IGB_DOWN, &adapter->state)) {
4356 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)
4357 mod_timer(&adapter->watchdog_timer,
4358 round_jiffies(jiffies + HZ));
4359 else
4360 mod_timer(&adapter->watchdog_timer,
4361 round_jiffies(jiffies + 2 * HZ));
4362 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004363}
4364
4365enum latency_range {
4366 lowest_latency = 0,
4367 low_latency = 1,
4368 bulk_latency = 2,
4369 latency_invalid = 255
4370};
4371
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004372/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004373 * igb_update_ring_itr - update the dynamic ITR value based on packet size
4374 * @q_vector: pointer to q_vector
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004375 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004376 * Stores a new ITR value based on strictly on packet size. This
4377 * algorithm is less sophisticated than that used in igb_update_itr,
4378 * due to the difficulty of synchronizing statistics across multiple
4379 * receive rings. The divisors and thresholds used by this function
4380 * were determined based on theoretical maximum wire speed and testing
4381 * data, in order to minimize response time while increasing bulk
4382 * throughput.
Fernando Luis Vazquez Cao406d4962014-03-18 00:26:48 -07004383 * This functionality is controlled by ethtool's coalescing settings.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004384 * NOTE: This function is called only when operating in a multiqueue
4385 * receive environment.
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004386 **/
Alexander Duyck047e0032009-10-27 15:49:27 +00004387static void igb_update_ring_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08004388{
Alexander Duyck047e0032009-10-27 15:49:27 +00004389 int new_val = q_vector->itr_val;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004390 int avg_wire_size = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +00004391 struct igb_adapter *adapter = q_vector->adapter;
Eric Dumazet12dcd862010-10-15 17:27:10 +00004392 unsigned int packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08004393
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004394 /* For non-gigabit speeds, just fix the interrupt rate at 4000
4395 * ints/sec - ITR timer value of 120 ticks.
4396 */
4397 if (adapter->link_speed != SPEED_1000) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004398 new_val = IGB_4K_ITR;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004399 goto set_itr_val;
4400 }
Alexander Duyck047e0032009-10-27 15:49:27 +00004401
Alexander Duyck0ba82992011-08-26 07:45:47 +00004402 packets = q_vector->rx.total_packets;
4403 if (packets)
4404 avg_wire_size = q_vector->rx.total_bytes / packets;
Eric Dumazet12dcd862010-10-15 17:27:10 +00004405
Alexander Duyck0ba82992011-08-26 07:45:47 +00004406 packets = q_vector->tx.total_packets;
4407 if (packets)
4408 avg_wire_size = max_t(u32, avg_wire_size,
4409 q_vector->tx.total_bytes / packets);
Alexander Duyck047e0032009-10-27 15:49:27 +00004410
4411 /* if avg_wire_size isn't set no work was done */
4412 if (!avg_wire_size)
4413 goto clear_counts;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004414
4415 /* Add 24 bytes to size to account for CRC, preamble, and gap */
4416 avg_wire_size += 24;
4417
4418 /* Don't starve jumbo frames */
4419 avg_wire_size = min(avg_wire_size, 3000);
4420
4421 /* Give a little boost to mid-size frames */
4422 if ((avg_wire_size > 300) && (avg_wire_size < 1200))
4423 new_val = avg_wire_size / 3;
4424 else
4425 new_val = avg_wire_size / 2;
4426
Alexander Duyck0ba82992011-08-26 07:45:47 +00004427 /* conservative mode (itr 3) eliminates the lowest_latency setting */
4428 if (new_val < IGB_20K_ITR &&
4429 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
4430 (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
4431 new_val = IGB_20K_ITR;
Nick Nunleyabe1c362010-02-17 01:03:19 +00004432
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004433set_itr_val:
Alexander Duyck047e0032009-10-27 15:49:27 +00004434 if (new_val != q_vector->itr_val) {
4435 q_vector->itr_val = new_val;
4436 q_vector->set_itr = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004437 }
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004438clear_counts:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004439 q_vector->rx.total_bytes = 0;
4440 q_vector->rx.total_packets = 0;
4441 q_vector->tx.total_bytes = 0;
4442 q_vector->tx.total_packets = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004443}
4444
4445/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004446 * igb_update_itr - update the dynamic ITR value based on statistics
4447 * @q_vector: pointer to q_vector
4448 * @ring_container: ring info to update the itr for
4449 *
4450 * Stores a new ITR value based on packets and byte
4451 * counts during the last interrupt. The advantage of per interrupt
4452 * computation is faster updates and more accurate ITR for the current
4453 * traffic pattern. Constants in this function were computed
4454 * based on theoretical maximum wire speed and thresholds were set based
4455 * on testing data as well as attempting to minimize response time
4456 * while increasing bulk throughput.
Fernando Luis Vazquez Cao406d4962014-03-18 00:26:48 -07004457 * This functionality is controlled by ethtool's coalescing settings.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004458 * NOTE: These calculations are only valid when operating in a single-
4459 * queue environment.
Auke Kok9d5c8242008-01-24 02:22:38 -08004460 **/
Alexander Duyck0ba82992011-08-26 07:45:47 +00004461static void igb_update_itr(struct igb_q_vector *q_vector,
4462 struct igb_ring_container *ring_container)
Auke Kok9d5c8242008-01-24 02:22:38 -08004463{
Alexander Duyck0ba82992011-08-26 07:45:47 +00004464 unsigned int packets = ring_container->total_packets;
4465 unsigned int bytes = ring_container->total_bytes;
4466 u8 itrval = ring_container->itr;
Auke Kok9d5c8242008-01-24 02:22:38 -08004467
Alexander Duyck0ba82992011-08-26 07:45:47 +00004468 /* no packets, exit with status unchanged */
Auke Kok9d5c8242008-01-24 02:22:38 -08004469 if (packets == 0)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004470 return;
Auke Kok9d5c8242008-01-24 02:22:38 -08004471
Alexander Duyck0ba82992011-08-26 07:45:47 +00004472 switch (itrval) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004473 case lowest_latency:
4474 /* handle TSO and jumbo frames */
4475 if (bytes/packets > 8000)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004476 itrval = bulk_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004477 else if ((packets < 5) && (bytes > 512))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004478 itrval = low_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004479 break;
4480 case low_latency: /* 50 usec aka 20000 ints/s */
4481 if (bytes > 10000) {
4482 /* this if handles the TSO accounting */
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004483 if (bytes/packets > 8000)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004484 itrval = bulk_latency;
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004485 else if ((packets < 10) || ((bytes/packets) > 1200))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004486 itrval = bulk_latency;
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004487 else if ((packets > 35))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004488 itrval = lowest_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004489 } else if (bytes/packets > 2000) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004490 itrval = bulk_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004491 } else if (packets <= 2 && bytes < 512) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004492 itrval = lowest_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004493 }
4494 break;
4495 case bulk_latency: /* 250 usec aka 4000 ints/s */
4496 if (bytes > 25000) {
4497 if (packets > 35)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004498 itrval = low_latency;
Alexander Duyck1e5c3d22009-02-12 18:17:21 +00004499 } else if (bytes < 1500) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004500 itrval = low_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004501 }
4502 break;
4503 }
4504
Alexander Duyck0ba82992011-08-26 07:45:47 +00004505 /* clear work counters since we have the values we need */
4506 ring_container->total_bytes = 0;
4507 ring_container->total_packets = 0;
4508
4509 /* write updated itr to ring container */
4510 ring_container->itr = itrval;
Auke Kok9d5c8242008-01-24 02:22:38 -08004511}
4512
Alexander Duyck0ba82992011-08-26 07:45:47 +00004513static void igb_set_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08004514{
Alexander Duyck0ba82992011-08-26 07:45:47 +00004515 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck047e0032009-10-27 15:49:27 +00004516 u32 new_itr = q_vector->itr_val;
Alexander Duyck0ba82992011-08-26 07:45:47 +00004517 u8 current_itr = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004518
4519 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
4520 if (adapter->link_speed != SPEED_1000) {
4521 current_itr = 0;
Alexander Duyck0ba82992011-08-26 07:45:47 +00004522 new_itr = IGB_4K_ITR;
Auke Kok9d5c8242008-01-24 02:22:38 -08004523 goto set_itr_now;
4524 }
4525
Alexander Duyck0ba82992011-08-26 07:45:47 +00004526 igb_update_itr(q_vector, &q_vector->tx);
4527 igb_update_itr(q_vector, &q_vector->rx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004528
Alexander Duyck0ba82992011-08-26 07:45:47 +00004529 current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
Auke Kok9d5c8242008-01-24 02:22:38 -08004530
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004531 /* conservative mode (itr 3) eliminates the lowest_latency setting */
Alexander Duyck0ba82992011-08-26 07:45:47 +00004532 if (current_itr == lowest_latency &&
4533 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
4534 (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004535 current_itr = low_latency;
4536
Auke Kok9d5c8242008-01-24 02:22:38 -08004537 switch (current_itr) {
4538 /* counts and packets in update_itr are dependent on these numbers */
4539 case lowest_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004540 new_itr = IGB_70K_ITR; /* 70,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004541 break;
4542 case low_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004543 new_itr = IGB_20K_ITR; /* 20,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004544 break;
4545 case bulk_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004546 new_itr = IGB_4K_ITR; /* 4,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004547 break;
4548 default:
4549 break;
4550 }
4551
4552set_itr_now:
Alexander Duyck047e0032009-10-27 15:49:27 +00004553 if (new_itr != q_vector->itr_val) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004554 /* this attempts to bias the interrupt rate towards Bulk
4555 * by adding intermediate steps when interrupt rate is
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004556 * increasing
4557 */
Alexander Duyck047e0032009-10-27 15:49:27 +00004558 new_itr = new_itr > q_vector->itr_val ?
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004559 max((new_itr * q_vector->itr_val) /
4560 (new_itr + (q_vector->itr_val >> 2)),
4561 new_itr) : new_itr;
Auke Kok9d5c8242008-01-24 02:22:38 -08004562 /* Don't write the value here; it resets the adapter's
4563 * internal timer, and causes us to delay far longer than
4564 * we should between interrupts. Instead, we write the ITR
4565 * value at the beginning of the next interrupt so the timing
4566 * ends up being correct.
4567 */
Alexander Duyck047e0032009-10-27 15:49:27 +00004568 q_vector->itr_val = new_itr;
4569 q_vector->set_itr = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004570 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004571}
4572
Stephen Hemmingerc50b52a2012-01-18 22:13:26 +00004573static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens,
4574 u32 type_tucmd, u32 mss_l4len_idx)
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004575{
4576 struct e1000_adv_tx_context_desc *context_desc;
4577 u16 i = tx_ring->next_to_use;
4578
4579 context_desc = IGB_TX_CTXTDESC(tx_ring, i);
4580
4581 i++;
4582 tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
4583
4584 /* set bits to identify this as an advanced context descriptor */
4585 type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
4586
4587 /* For 82575, context index must be unique per ring. */
Alexander Duyck866cff02011-08-26 07:45:36 +00004588 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004589 mss_l4len_idx |= tx_ring->reg_idx << 4;
4590
4591 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
4592 context_desc->seqnum_seed = 0;
4593 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd);
4594 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
4595}
4596
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004597static int igb_tso(struct igb_ring *tx_ring,
4598 struct igb_tx_buffer *first,
4599 u8 *hdr_len)
Auke Kok9d5c8242008-01-24 02:22:38 -08004600{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004601 struct sk_buff *skb = first->skb;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004602 u32 vlan_macip_lens, type_tucmd;
4603 u32 mss_l4len_idx, l4len;
Francois Romieu06c14e52014-03-30 03:14:11 +00004604 int err;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004605
Alexander Duycked6aa102012-11-13 04:03:22 +00004606 if (skb->ip_summed != CHECKSUM_PARTIAL)
4607 return 0;
4608
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004609 if (!skb_is_gso(skb))
4610 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004611
Francois Romieu06c14e52014-03-30 03:14:11 +00004612 err = skb_cow_head(skb, 0);
4613 if (err < 0)
4614 return err;
Auke Kok9d5c8242008-01-24 02:22:38 -08004615
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004616 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
4617 type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP;
Auke Kok9d5c8242008-01-24 02:22:38 -08004618
Joe Perches7c4d16f2014-03-13 05:19:14 +00004619 if (first->protocol == htons(ETH_P_IP)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004620 struct iphdr *iph = ip_hdr(skb);
4621 iph->tot_len = 0;
4622 iph->check = 0;
4623 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
4624 iph->daddr, 0,
4625 IPPROTO_TCP,
4626 0);
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004627 type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004628 first->tx_flags |= IGB_TX_FLAGS_TSO |
4629 IGB_TX_FLAGS_CSUM |
4630 IGB_TX_FLAGS_IPV4;
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08004631 } else if (skb_is_gso_v6(skb)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004632 ipv6_hdr(skb)->payload_len = 0;
4633 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4634 &ipv6_hdr(skb)->daddr,
4635 0, IPPROTO_TCP, 0);
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004636 first->tx_flags |= IGB_TX_FLAGS_TSO |
4637 IGB_TX_FLAGS_CSUM;
Auke Kok9d5c8242008-01-24 02:22:38 -08004638 }
4639
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004640 /* compute header lengths */
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004641 l4len = tcp_hdrlen(skb);
4642 *hdr_len = skb_transport_offset(skb) + l4len;
Auke Kok9d5c8242008-01-24 02:22:38 -08004643
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004644 /* update gso size and bytecount with header size */
4645 first->gso_segs = skb_shinfo(skb)->gso_segs;
4646 first->bytecount += (first->gso_segs - 1) * *hdr_len;
4647
Auke Kok9d5c8242008-01-24 02:22:38 -08004648 /* MSS L4LEN IDX */
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004649 mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT;
4650 mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT;
Auke Kok9d5c8242008-01-24 02:22:38 -08004651
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004652 /* VLAN MACLEN IPLEN */
4653 vlan_macip_lens = skb_network_header_len(skb);
4654 vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004655 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
Auke Kok9d5c8242008-01-24 02:22:38 -08004656
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004657 igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004658
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004659 return 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004660}
4661
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004662static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first)
Auke Kok9d5c8242008-01-24 02:22:38 -08004663{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004664 struct sk_buff *skb = first->skb;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004665 u32 vlan_macip_lens = 0;
4666 u32 mss_l4len_idx = 0;
4667 u32 type_tucmd = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004668
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004669 if (skb->ip_summed != CHECKSUM_PARTIAL) {
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004670 if (!(first->tx_flags & IGB_TX_FLAGS_VLAN))
4671 return;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004672 } else {
4673 u8 l4_hdr = 0;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004674
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004675 switch (first->protocol) {
Joe Perches7c4d16f2014-03-13 05:19:14 +00004676 case htons(ETH_P_IP):
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004677 vlan_macip_lens |= skb_network_header_len(skb);
4678 type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
4679 l4_hdr = ip_hdr(skb)->protocol;
4680 break;
Joe Perches7c4d16f2014-03-13 05:19:14 +00004681 case htons(ETH_P_IPV6):
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004682 vlan_macip_lens |= skb_network_header_len(skb);
4683 l4_hdr = ipv6_hdr(skb)->nexthdr;
4684 break;
4685 default:
4686 if (unlikely(net_ratelimit())) {
4687 dev_warn(tx_ring->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004688 "partial checksum but proto=%x!\n",
4689 first->protocol);
Arthur Jonesfa4a7ef2009-03-21 16:55:07 -07004690 }
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004691 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08004692 }
4693
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004694 switch (l4_hdr) {
4695 case IPPROTO_TCP:
4696 type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
4697 mss_l4len_idx = tcp_hdrlen(skb) <<
4698 E1000_ADVTXD_L4LEN_SHIFT;
4699 break;
4700 case IPPROTO_SCTP:
4701 type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
4702 mss_l4len_idx = sizeof(struct sctphdr) <<
4703 E1000_ADVTXD_L4LEN_SHIFT;
4704 break;
4705 case IPPROTO_UDP:
4706 mss_l4len_idx = sizeof(struct udphdr) <<
4707 E1000_ADVTXD_L4LEN_SHIFT;
4708 break;
4709 default:
4710 if (unlikely(net_ratelimit())) {
4711 dev_warn(tx_ring->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004712 "partial checksum but l4 proto=%x!\n",
4713 l4_hdr);
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004714 }
4715 break;
4716 }
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004717
4718 /* update TX checksum flag */
4719 first->tx_flags |= IGB_TX_FLAGS_CSUM;
Auke Kok9d5c8242008-01-24 02:22:38 -08004720 }
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004721
4722 vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004723 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004724
4725 igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004726}
4727
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004728#define IGB_SET_FLAG(_input, _flag, _result) \
4729 ((_flag <= _result) ? \
4730 ((u32)(_input & _flag) * (_result / _flag)) : \
4731 ((u32)(_input & _flag) / (_flag / _result)))
4732
4733static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
Alexander Duycke032afc2011-08-26 07:44:48 +00004734{
4735 /* set type for advanced descriptor with frame checksum insertion */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004736 u32 cmd_type = E1000_ADVTXD_DTYP_DATA |
4737 E1000_ADVTXD_DCMD_DEXT |
4738 E1000_ADVTXD_DCMD_IFCS;
Alexander Duycke032afc2011-08-26 07:44:48 +00004739
4740 /* set HW vlan bit if vlan is present */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004741 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN,
4742 (E1000_ADVTXD_DCMD_VLE));
Alexander Duycke032afc2011-08-26 07:44:48 +00004743
4744 /* set segmentation bits for TSO */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004745 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO,
4746 (E1000_ADVTXD_DCMD_TSE));
4747
4748 /* set timestamp bit if present */
4749 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP,
4750 (E1000_ADVTXD_MAC_TSTAMP));
4751
4752 /* insert frame checksum */
4753 cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS);
Alexander Duycke032afc2011-08-26 07:44:48 +00004754
4755 return cmd_type;
4756}
4757
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004758static void igb_tx_olinfo_status(struct igb_ring *tx_ring,
4759 union e1000_adv_tx_desc *tx_desc,
4760 u32 tx_flags, unsigned int paylen)
Alexander Duycke032afc2011-08-26 07:44:48 +00004761{
4762 u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT;
4763
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004764 /* 82575 requires a unique index per ring */
4765 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
Alexander Duycke032afc2011-08-26 07:44:48 +00004766 olinfo_status |= tx_ring->reg_idx << 4;
4767
4768 /* insert L4 checksum */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004769 olinfo_status |= IGB_SET_FLAG(tx_flags,
4770 IGB_TX_FLAGS_CSUM,
4771 (E1000_TXD_POPTS_TXSM << 8));
Alexander Duycke032afc2011-08-26 07:44:48 +00004772
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004773 /* insert IPv4 checksum */
4774 olinfo_status |= IGB_SET_FLAG(tx_flags,
4775 IGB_TX_FLAGS_IPV4,
4776 (E1000_TXD_POPTS_IXSM << 8));
Alexander Duycke032afc2011-08-26 07:44:48 +00004777
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004778 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Alexander Duycke032afc2011-08-26 07:44:48 +00004779}
4780
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004781static void igb_tx_map(struct igb_ring *tx_ring,
4782 struct igb_tx_buffer *first,
Alexander Duyckebe42d12011-08-26 07:45:09 +00004783 const u8 hdr_len)
Auke Kok9d5c8242008-01-24 02:22:38 -08004784{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004785 struct sk_buff *skb = first->skb;
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004786 struct igb_tx_buffer *tx_buffer;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004787 union e1000_adv_tx_desc *tx_desc;
Alexander Duyck80d07592012-11-13 04:03:24 +00004788 struct skb_frag_struct *frag;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004789 dma_addr_t dma;
Alexander Duyck80d07592012-11-13 04:03:24 +00004790 unsigned int data_len, size;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004791 u32 tx_flags = first->tx_flags;
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004792 u32 cmd_type = igb_tx_cmd_type(skb, tx_flags);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004793 u16 i = tx_ring->next_to_use;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004794
4795 tx_desc = IGB_TX_DESC(tx_ring, i);
4796
Alexander Duyck80d07592012-11-13 04:03:24 +00004797 igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len);
4798
4799 size = skb_headlen(skb);
4800 data_len = skb->data_len;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004801
4802 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
Auke Kok9d5c8242008-01-24 02:22:38 -08004803
Alexander Duyck80d07592012-11-13 04:03:24 +00004804 tx_buffer = first;
Alexander Duyck2bbfebe2011-08-26 07:44:59 +00004805
Alexander Duyck80d07592012-11-13 04:03:24 +00004806 for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
4807 if (dma_mapping_error(tx_ring->dev, dma))
4808 goto dma_error;
4809
4810 /* record length, and DMA address */
4811 dma_unmap_len_set(tx_buffer, len, size);
4812 dma_unmap_addr_set(tx_buffer, dma, dma);
4813
4814 tx_desc->read.buffer_addr = cpu_to_le64(dma);
4815
Alexander Duyckebe42d12011-08-26 07:45:09 +00004816 while (unlikely(size > IGB_MAX_DATA_PER_TXD)) {
4817 tx_desc->read.cmd_type_len =
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004818 cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD);
Auke Kok9d5c8242008-01-24 02:22:38 -08004819
Alexander Duyckebe42d12011-08-26 07:45:09 +00004820 i++;
4821 tx_desc++;
4822 if (i == tx_ring->count) {
4823 tx_desc = IGB_TX_DESC(tx_ring, 0);
4824 i = 0;
4825 }
Alexander Duyck80d07592012-11-13 04:03:24 +00004826 tx_desc->read.olinfo_status = 0;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004827
4828 dma += IGB_MAX_DATA_PER_TXD;
4829 size -= IGB_MAX_DATA_PER_TXD;
4830
Alexander Duyckebe42d12011-08-26 07:45:09 +00004831 tx_desc->read.buffer_addr = cpu_to_le64(dma);
4832 }
4833
4834 if (likely(!data_len))
4835 break;
4836
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004837 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004838
Alexander Duyck65689fe2009-03-20 00:17:43 +00004839 i++;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004840 tx_desc++;
4841 if (i == tx_ring->count) {
4842 tx_desc = IGB_TX_DESC(tx_ring, 0);
Alexander Duyck65689fe2009-03-20 00:17:43 +00004843 i = 0;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004844 }
Alexander Duyck80d07592012-11-13 04:03:24 +00004845 tx_desc->read.olinfo_status = 0;
Alexander Duyck65689fe2009-03-20 00:17:43 +00004846
Eric Dumazet9e903e02011-10-18 21:00:24 +00004847 size = skb_frag_size(frag);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004848 data_len -= size;
4849
4850 dma = skb_frag_dma_map(tx_ring->dev, frag, 0,
Alexander Duyck80d07592012-11-13 04:03:24 +00004851 size, DMA_TO_DEVICE);
Alexander Duyck6366ad32009-12-02 16:47:18 +00004852
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004853 tx_buffer = &tx_ring->tx_buffer_info[i];
Auke Kok9d5c8242008-01-24 02:22:38 -08004854 }
4855
Alexander Duyckebe42d12011-08-26 07:45:09 +00004856 /* write last descriptor with RS and EOP bits */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004857 cmd_type |= size | IGB_TXD_DCMD;
4858 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
Alexander Duyck8542db02011-08-26 07:44:43 +00004859
Alexander Duyck80d07592012-11-13 04:03:24 +00004860 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
4861
Alexander Duyck8542db02011-08-26 07:44:43 +00004862 /* set the timestamp */
4863 first->time_stamp = jiffies;
4864
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004865 /* Force memory writes to complete before letting h/w know there
Alexander Duyckebe42d12011-08-26 07:45:09 +00004866 * are new descriptors to fetch. (Only applicable for weak-ordered
4867 * memory model archs, such as IA-64).
4868 *
4869 * We also need this memory barrier to make certain all of the
4870 * status bits have been updated before next_to_watch is written.
4871 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004872 wmb();
4873
Alexander Duyckebe42d12011-08-26 07:45:09 +00004874 /* set next_to_watch value indicating a packet is present */
4875 first->next_to_watch = tx_desc;
4876
4877 i++;
4878 if (i == tx_ring->count)
4879 i = 0;
4880
Auke Kok9d5c8242008-01-24 02:22:38 -08004881 tx_ring->next_to_use = i;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004882
Alexander Duyckfce99e32009-10-27 15:51:27 +00004883 writel(i, tx_ring->tail);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004884
Auke Kok9d5c8242008-01-24 02:22:38 -08004885 /* we need this if more than one processor can write to our tail
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004886 * at a time, it synchronizes IO on IA64/Altix systems
4887 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004888 mmiowb();
Alexander Duyckebe42d12011-08-26 07:45:09 +00004889
4890 return;
4891
4892dma_error:
4893 dev_err(tx_ring->dev, "TX DMA map failed\n");
4894
4895 /* clear dma mappings for failed tx_buffer_info map */
4896 for (;;) {
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004897 tx_buffer = &tx_ring->tx_buffer_info[i];
4898 igb_unmap_and_free_tx_resource(tx_ring, tx_buffer);
4899 if (tx_buffer == first)
Alexander Duyckebe42d12011-08-26 07:45:09 +00004900 break;
4901 if (i == 0)
4902 i = tx_ring->count;
4903 i--;
4904 }
4905
4906 tx_ring->next_to_use = i;
Auke Kok9d5c8242008-01-24 02:22:38 -08004907}
4908
Alexander Duyck6ad4edf2011-08-26 07:45:26 +00004909static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
Auke Kok9d5c8242008-01-24 02:22:38 -08004910{
Alexander Duycke694e962009-10-27 15:53:06 +00004911 struct net_device *netdev = tx_ring->netdev;
4912
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07004913 netif_stop_subqueue(netdev, tx_ring->queue_index);
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07004914
Auke Kok9d5c8242008-01-24 02:22:38 -08004915 /* Herbert's original patch had:
4916 * smp_mb__after_netif_stop_queue();
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004917 * but since that doesn't exist yet, just open code it.
4918 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004919 smp_mb();
4920
4921 /* We need to check again in a case another CPU has just
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004922 * made room available.
4923 */
Alexander Duyckc493ea42009-03-20 00:16:50 +00004924 if (igb_desc_unused(tx_ring) < size)
Auke Kok9d5c8242008-01-24 02:22:38 -08004925 return -EBUSY;
4926
4927 /* A reprieve! */
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07004928 netif_wake_subqueue(netdev, tx_ring->queue_index);
Eric Dumazet12dcd862010-10-15 17:27:10 +00004929
4930 u64_stats_update_begin(&tx_ring->tx_syncp2);
4931 tx_ring->tx_stats.restart_queue2++;
4932 u64_stats_update_end(&tx_ring->tx_syncp2);
4933
Auke Kok9d5c8242008-01-24 02:22:38 -08004934 return 0;
4935}
4936
Alexander Duyck6ad4edf2011-08-26 07:45:26 +00004937static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
Auke Kok9d5c8242008-01-24 02:22:38 -08004938{
Alexander Duyckc493ea42009-03-20 00:16:50 +00004939 if (igb_desc_unused(tx_ring) >= size)
Auke Kok9d5c8242008-01-24 02:22:38 -08004940 return 0;
Alexander Duycke694e962009-10-27 15:53:06 +00004941 return __igb_maybe_stop_tx(tx_ring, size);
Auke Kok9d5c8242008-01-24 02:22:38 -08004942}
4943
Alexander Duyckcd392f52011-08-26 07:43:59 +00004944netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
4945 struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08004946{
Alexander Duyck8542db02011-08-26 07:44:43 +00004947 struct igb_tx_buffer *first;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004948 int tso;
Nick Nunley91d4ee32010-02-17 01:04:56 +00004949 u32 tx_flags = 0;
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004950 u16 count = TXD_USE_COUNT(skb_headlen(skb));
Alexander Duyck31f6adb2011-08-26 07:44:53 +00004951 __be16 protocol = vlan_get_protocol(skb);
Nick Nunley91d4ee32010-02-17 01:04:56 +00004952 u8 hdr_len = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004953
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004954 /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD,
4955 * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD,
Auke Kok9d5c8242008-01-24 02:22:38 -08004956 * + 2 desc gap to keep tail from touching head,
Auke Kok9d5c8242008-01-24 02:22:38 -08004957 * + 1 desc for context descriptor,
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004958 * otherwise try next time
4959 */
4960 if (NETDEV_FRAG_PAGE_MAX_SIZE > IGB_MAX_DATA_PER_TXD) {
4961 unsigned short f;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004962
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004963 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
4964 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
4965 } else {
4966 count += skb_shinfo(skb)->nr_frags;
4967 }
4968
4969 if (igb_maybe_stop_tx(tx_ring, count + 3)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004970 /* this is a hard error */
Auke Kok9d5c8242008-01-24 02:22:38 -08004971 return NETDEV_TX_BUSY;
4972 }
Patrick Ohly33af6bc2009-02-12 05:03:43 +00004973
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004974 /* record the location of the first descriptor for this packet */
4975 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
4976 first->skb = skb;
4977 first->bytecount = skb->len;
4978 first->gso_segs = 1;
4979
Alexander Duyckb646c222013-02-07 08:55:46 +00004980 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
4981 struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
Matthew Vick1f6e8172012-08-18 07:26:33 +00004982
Jakub Kicinskied4420a2014-03-15 14:55:32 +00004983 if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS,
4984 &adapter->state)) {
Alexander Duyckb646c222013-02-07 08:55:46 +00004985 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
4986 tx_flags |= IGB_TX_FLAGS_TSTAMP;
4987
4988 adapter->ptp_tx_skb = skb_get(skb);
4989 adapter->ptp_tx_start = jiffies;
4990 if (adapter->hw.mac.type == e1000_82576)
4991 schedule_work(&adapter->ptp_tx_work);
4992 }
Patrick Ohly33af6bc2009-02-12 05:03:43 +00004993 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004994
Jakub Kicinskiafc835d2014-03-15 14:55:26 +00004995 skb_tx_timestamp(skb);
4996
Jesse Grosseab6d182010-10-20 13:56:03 +00004997 if (vlan_tx_tag_present(skb)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004998 tx_flags |= IGB_TX_FLAGS_VLAN;
4999 tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
5000 }
5001
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005002 /* record initial flags and protocol */
5003 first->tx_flags = tx_flags;
5004 first->protocol = protocol;
Alexander Duyckcdfd01fc2009-10-27 23:50:57 +00005005
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005006 tso = igb_tso(tx_ring, first, &hdr_len);
5007 if (tso < 0)
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005008 goto out_drop;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005009 else if (!tso)
5010 igb_tx_csum(tx_ring, first);
Auke Kok9d5c8242008-01-24 02:22:38 -08005011
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005012 igb_tx_map(tx_ring, first, hdr_len);
Alexander Duyck85ad76b2009-10-27 15:52:46 +00005013
5014 /* Make sure there is space in the ring for the next send. */
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00005015 igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
Alexander Duyck85ad76b2009-10-27 15:52:46 +00005016
Auke Kok9d5c8242008-01-24 02:22:38 -08005017 return NETDEV_TX_OK;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005018
5019out_drop:
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005020 igb_unmap_and_free_tx_resource(tx_ring, first);
5021
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005022 return NETDEV_TX_OK;
Auke Kok9d5c8242008-01-24 02:22:38 -08005023}
5024
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005025static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter,
5026 struct sk_buff *skb)
5027{
5028 unsigned int r_idx = skb->queue_mapping;
5029
5030 if (r_idx >= adapter->num_tx_queues)
5031 r_idx = r_idx % adapter->num_tx_queues;
5032
5033 return adapter->tx_ring[r_idx];
5034}
5035
Alexander Duyckcd392f52011-08-26 07:43:59 +00005036static netdev_tx_t igb_xmit_frame(struct sk_buff *skb,
5037 struct net_device *netdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08005038{
5039 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyckb1a436c2009-10-27 15:54:43 +00005040
5041 if (test_bit(__IGB_DOWN, &adapter->state)) {
5042 dev_kfree_skb_any(skb);
5043 return NETDEV_TX_OK;
5044 }
5045
5046 if (skb->len <= 0) {
5047 dev_kfree_skb_any(skb);
5048 return NETDEV_TX_OK;
5049 }
5050
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005051 /* The minimum packet size with TCTL.PSP set is 17 so pad the skb
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005052 * in order to meet this minimum size requirement.
5053 */
Tushar Daveea5ceea2012-09-14 03:43:43 +00005054 if (unlikely(skb->len < 17)) {
5055 if (skb_pad(skb, 17 - skb->len))
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005056 return NETDEV_TX_OK;
5057 skb->len = 17;
Tushar Daveea5ceea2012-09-14 03:43:43 +00005058 skb_set_tail_pointer(skb, 17);
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005059 }
Auke Kok9d5c8242008-01-24 02:22:38 -08005060
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005061 return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb));
Auke Kok9d5c8242008-01-24 02:22:38 -08005062}
5063
5064/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005065 * igb_tx_timeout - Respond to a Tx Hang
5066 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08005067 **/
5068static void igb_tx_timeout(struct net_device *netdev)
5069{
5070 struct igb_adapter *adapter = netdev_priv(netdev);
5071 struct e1000_hw *hw = &adapter->hw;
5072
5073 /* Do the reset outside of interrupt context */
5074 adapter->tx_timeout_count++;
Alexander Duyckf7ba2052009-10-27 23:48:51 +00005075
Alexander Duyck06218a82011-08-26 07:46:55 +00005076 if (hw->mac.type >= e1000_82580)
Alexander Duyck55cac242009-11-19 12:42:21 +00005077 hw->dev_spec._82575.global_device_reset = true;
5078
Auke Kok9d5c8242008-01-24 02:22:38 -08005079 schedule_work(&adapter->reset_task);
Alexander Duyck265de402009-02-06 23:22:52 +00005080 wr32(E1000_EICS,
5081 (adapter->eims_enable_mask & ~adapter->eims_other));
Auke Kok9d5c8242008-01-24 02:22:38 -08005082}
5083
5084static void igb_reset_task(struct work_struct *work)
5085{
5086 struct igb_adapter *adapter;
5087 adapter = container_of(work, struct igb_adapter, reset_task);
5088
Taku Izumic97ec422010-04-27 14:39:30 +00005089 igb_dump(adapter);
5090 netdev_err(adapter->netdev, "Reset adapter\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005091 igb_reinit_locked(adapter);
5092}
5093
5094/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005095 * igb_get_stats64 - Get System Network Statistics
5096 * @netdev: network interface device structure
5097 * @stats: rtnl_link_stats64 pointer
Auke Kok9d5c8242008-01-24 02:22:38 -08005098 **/
Eric Dumazet12dcd862010-10-15 17:27:10 +00005099static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005100 struct rtnl_link_stats64 *stats)
Auke Kok9d5c8242008-01-24 02:22:38 -08005101{
Eric Dumazet12dcd862010-10-15 17:27:10 +00005102 struct igb_adapter *adapter = netdev_priv(netdev);
5103
5104 spin_lock(&adapter->stats64_lock);
5105 igb_update_stats(adapter, &adapter->stats64);
5106 memcpy(stats, &adapter->stats64, sizeof(*stats));
5107 spin_unlock(&adapter->stats64_lock);
5108
5109 return stats;
Auke Kok9d5c8242008-01-24 02:22:38 -08005110}
5111
5112/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005113 * igb_change_mtu - Change the Maximum Transfer Unit
5114 * @netdev: network interface device structure
5115 * @new_mtu: new value for maximum frame size
Auke Kok9d5c8242008-01-24 02:22:38 -08005116 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005117 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08005118 **/
5119static int igb_change_mtu(struct net_device *netdev, int new_mtu)
5120{
5121 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005122 struct pci_dev *pdev = adapter->pdev;
Alexander Duyck153285f2011-08-26 07:43:32 +00005123 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
Auke Kok9d5c8242008-01-24 02:22:38 -08005124
Alexander Duyckc809d222009-10-27 23:52:13 +00005125 if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
Alexander Duyck090b1792009-10-27 23:51:55 +00005126 dev_err(&pdev->dev, "Invalid MTU setting\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005127 return -EINVAL;
5128 }
5129
Alexander Duyck153285f2011-08-26 07:43:32 +00005130#define MAX_STD_JUMBO_FRAME_SIZE 9238
Auke Kok9d5c8242008-01-24 02:22:38 -08005131 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
Alexander Duyck090b1792009-10-27 23:51:55 +00005132 dev_err(&pdev->dev, "MTU > 9216 not supported.\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005133 return -EINVAL;
5134 }
5135
Alexander Duyck2ccd9942013-07-16 00:20:34 +00005136 /* adjust max frame to be at least the size of a standard frame */
5137 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
5138 max_frame = ETH_FRAME_LEN + ETH_FCS_LEN;
5139
Auke Kok9d5c8242008-01-24 02:22:38 -08005140 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
5141 msleep(1);
Alexander Duyck73cd78f2009-02-12 18:16:59 +00005142
Auke Kok9d5c8242008-01-24 02:22:38 -08005143 /* igb_down has a dependency on max_frame_size */
5144 adapter->max_frame_size = max_frame;
Alexander Duyck559e9c42009-10-27 23:52:50 +00005145
Alexander Duyck4c844852009-10-27 15:52:07 +00005146 if (netif_running(netdev))
5147 igb_down(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08005148
Alexander Duyck090b1792009-10-27 23:51:55 +00005149 dev_info(&pdev->dev, "changing MTU from %d to %d\n",
Auke Kok9d5c8242008-01-24 02:22:38 -08005150 netdev->mtu, new_mtu);
5151 netdev->mtu = new_mtu;
5152
5153 if (netif_running(netdev))
5154 igb_up(adapter);
5155 else
5156 igb_reset(adapter);
5157
5158 clear_bit(__IGB_RESETTING, &adapter->state);
5159
5160 return 0;
5161}
5162
5163/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005164 * igb_update_stats - Update the board statistics counters
5165 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08005166 **/
Eric Dumazet12dcd862010-10-15 17:27:10 +00005167void igb_update_stats(struct igb_adapter *adapter,
5168 struct rtnl_link_stats64 *net_stats)
Auke Kok9d5c8242008-01-24 02:22:38 -08005169{
5170 struct e1000_hw *hw = &adapter->hw;
5171 struct pci_dev *pdev = adapter->pdev;
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005172 u32 reg, mpc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005173 u16 phy_tmp;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005174 int i;
5175 u64 bytes, packets;
Eric Dumazet12dcd862010-10-15 17:27:10 +00005176 unsigned int start;
5177 u64 _bytes, _packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08005178
5179#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
5180
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005181 /* Prevent stats update while adapter is being reset, or if the pci
Auke Kok9d5c8242008-01-24 02:22:38 -08005182 * connection is down.
5183 */
5184 if (adapter->link_speed == 0)
5185 return;
5186 if (pci_channel_offline(pdev))
5187 return;
5188
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005189 bytes = 0;
5190 packets = 0;
Akeem G Abodunrin7f901282013-06-27 09:10:23 +00005191
5192 rcu_read_lock();
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005193 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00005194 struct igb_ring *ring = adapter->rx_ring[i];
Todd Fujinakae66c0832014-04-08 05:36:15 +00005195 u32 rqdpc = rd32(E1000_RQDPC(i));
5196 if (hw->mac.type >= e1000_i210)
5197 wr32(E1000_RQDPC(i), 0);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005198
Alexander Duyckae1c07a2012-08-08 05:23:22 +00005199 if (rqdpc) {
5200 ring->rx_stats.drops += rqdpc;
5201 net_stats->rx_fifo_errors += rqdpc;
5202 }
Eric Dumazet12dcd862010-10-15 17:27:10 +00005203
5204 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07005205 start = u64_stats_fetch_begin_irq(&ring->rx_syncp);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005206 _bytes = ring->rx_stats.bytes;
5207 _packets = ring->rx_stats.packets;
Eric W. Biederman57a77442014-03-13 21:26:42 -07005208 } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start));
Eric Dumazet12dcd862010-10-15 17:27:10 +00005209 bytes += _bytes;
5210 packets += _packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005211 }
5212
Alexander Duyck128e45e2009-11-12 18:37:38 +00005213 net_stats->rx_bytes = bytes;
5214 net_stats->rx_packets = packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005215
5216 bytes = 0;
5217 packets = 0;
5218 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00005219 struct igb_ring *ring = adapter->tx_ring[i];
Eric Dumazet12dcd862010-10-15 17:27:10 +00005220 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07005221 start = u64_stats_fetch_begin_irq(&ring->tx_syncp);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005222 _bytes = ring->tx_stats.bytes;
5223 _packets = ring->tx_stats.packets;
Eric W. Biederman57a77442014-03-13 21:26:42 -07005224 } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start));
Eric Dumazet12dcd862010-10-15 17:27:10 +00005225 bytes += _bytes;
5226 packets += _packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005227 }
Alexander Duyck128e45e2009-11-12 18:37:38 +00005228 net_stats->tx_bytes = bytes;
5229 net_stats->tx_packets = packets;
Akeem G Abodunrin7f901282013-06-27 09:10:23 +00005230 rcu_read_unlock();
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005231
5232 /* read stats registers */
Auke Kok9d5c8242008-01-24 02:22:38 -08005233 adapter->stats.crcerrs += rd32(E1000_CRCERRS);
5234 adapter->stats.gprc += rd32(E1000_GPRC);
5235 adapter->stats.gorc += rd32(E1000_GORCL);
5236 rd32(E1000_GORCH); /* clear GORCL */
5237 adapter->stats.bprc += rd32(E1000_BPRC);
5238 adapter->stats.mprc += rd32(E1000_MPRC);
5239 adapter->stats.roc += rd32(E1000_ROC);
5240
5241 adapter->stats.prc64 += rd32(E1000_PRC64);
5242 adapter->stats.prc127 += rd32(E1000_PRC127);
5243 adapter->stats.prc255 += rd32(E1000_PRC255);
5244 adapter->stats.prc511 += rd32(E1000_PRC511);
5245 adapter->stats.prc1023 += rd32(E1000_PRC1023);
5246 adapter->stats.prc1522 += rd32(E1000_PRC1522);
5247 adapter->stats.symerrs += rd32(E1000_SYMERRS);
5248 adapter->stats.sec += rd32(E1000_SEC);
5249
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005250 mpc = rd32(E1000_MPC);
5251 adapter->stats.mpc += mpc;
5252 net_stats->rx_fifo_errors += mpc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005253 adapter->stats.scc += rd32(E1000_SCC);
5254 adapter->stats.ecol += rd32(E1000_ECOL);
5255 adapter->stats.mcc += rd32(E1000_MCC);
5256 adapter->stats.latecol += rd32(E1000_LATECOL);
5257 adapter->stats.dc += rd32(E1000_DC);
5258 adapter->stats.rlec += rd32(E1000_RLEC);
5259 adapter->stats.xonrxc += rd32(E1000_XONRXC);
5260 adapter->stats.xontxc += rd32(E1000_XONTXC);
5261 adapter->stats.xoffrxc += rd32(E1000_XOFFRXC);
5262 adapter->stats.xofftxc += rd32(E1000_XOFFTXC);
5263 adapter->stats.fcruc += rd32(E1000_FCRUC);
5264 adapter->stats.gptc += rd32(E1000_GPTC);
5265 adapter->stats.gotc += rd32(E1000_GOTCL);
5266 rd32(E1000_GOTCH); /* clear GOTCL */
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005267 adapter->stats.rnbc += rd32(E1000_RNBC);
Auke Kok9d5c8242008-01-24 02:22:38 -08005268 adapter->stats.ruc += rd32(E1000_RUC);
5269 adapter->stats.rfc += rd32(E1000_RFC);
5270 adapter->stats.rjc += rd32(E1000_RJC);
5271 adapter->stats.tor += rd32(E1000_TORH);
5272 adapter->stats.tot += rd32(E1000_TOTH);
5273 adapter->stats.tpr += rd32(E1000_TPR);
5274
5275 adapter->stats.ptc64 += rd32(E1000_PTC64);
5276 adapter->stats.ptc127 += rd32(E1000_PTC127);
5277 adapter->stats.ptc255 += rd32(E1000_PTC255);
5278 adapter->stats.ptc511 += rd32(E1000_PTC511);
5279 adapter->stats.ptc1023 += rd32(E1000_PTC1023);
5280 adapter->stats.ptc1522 += rd32(E1000_PTC1522);
5281
5282 adapter->stats.mptc += rd32(E1000_MPTC);
5283 adapter->stats.bptc += rd32(E1000_BPTC);
5284
Nick Nunley2d0b0f62010-02-17 01:02:59 +00005285 adapter->stats.tpt += rd32(E1000_TPT);
5286 adapter->stats.colc += rd32(E1000_COLC);
Auke Kok9d5c8242008-01-24 02:22:38 -08005287
5288 adapter->stats.algnerrc += rd32(E1000_ALGNERRC);
Nick Nunley43915c7c2010-02-17 01:03:58 +00005289 /* read internal phy specific stats */
5290 reg = rd32(E1000_CTRL_EXT);
5291 if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) {
5292 adapter->stats.rxerrc += rd32(E1000_RXERRC);
Carolyn Wyborny3dbdf962012-09-12 04:36:24 +00005293
5294 /* this stat has invalid values on i210/i211 */
5295 if ((hw->mac.type != e1000_i210) &&
5296 (hw->mac.type != e1000_i211))
5297 adapter->stats.tncrs += rd32(E1000_TNCRS);
Nick Nunley43915c7c2010-02-17 01:03:58 +00005298 }
5299
Auke Kok9d5c8242008-01-24 02:22:38 -08005300 adapter->stats.tsctc += rd32(E1000_TSCTC);
5301 adapter->stats.tsctfc += rd32(E1000_TSCTFC);
5302
5303 adapter->stats.iac += rd32(E1000_IAC);
5304 adapter->stats.icrxoc += rd32(E1000_ICRXOC);
5305 adapter->stats.icrxptc += rd32(E1000_ICRXPTC);
5306 adapter->stats.icrxatc += rd32(E1000_ICRXATC);
5307 adapter->stats.ictxptc += rd32(E1000_ICTXPTC);
5308 adapter->stats.ictxatc += rd32(E1000_ICTXATC);
5309 adapter->stats.ictxqec += rd32(E1000_ICTXQEC);
5310 adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC);
5311 adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC);
5312
5313 /* Fill out the OS statistics structure */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005314 net_stats->multicast = adapter->stats.mprc;
5315 net_stats->collisions = adapter->stats.colc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005316
5317 /* Rx Errors */
5318
5319 /* RLEC on some newer hardware can be incorrect so build
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005320 * our own version based on RUC and ROC
5321 */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005322 net_stats->rx_errors = adapter->stats.rxerrc +
Auke Kok9d5c8242008-01-24 02:22:38 -08005323 adapter->stats.crcerrs + adapter->stats.algnerrc +
5324 adapter->stats.ruc + adapter->stats.roc +
5325 adapter->stats.cexterr;
Alexander Duyck128e45e2009-11-12 18:37:38 +00005326 net_stats->rx_length_errors = adapter->stats.ruc +
5327 adapter->stats.roc;
5328 net_stats->rx_crc_errors = adapter->stats.crcerrs;
5329 net_stats->rx_frame_errors = adapter->stats.algnerrc;
5330 net_stats->rx_missed_errors = adapter->stats.mpc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005331
5332 /* Tx Errors */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005333 net_stats->tx_errors = adapter->stats.ecol +
5334 adapter->stats.latecol;
5335 net_stats->tx_aborted_errors = adapter->stats.ecol;
5336 net_stats->tx_window_errors = adapter->stats.latecol;
5337 net_stats->tx_carrier_errors = adapter->stats.tncrs;
Auke Kok9d5c8242008-01-24 02:22:38 -08005338
5339 /* Tx Dropped needs to be maintained elsewhere */
5340
5341 /* Phy Stats */
5342 if (hw->phy.media_type == e1000_media_type_copper) {
5343 if ((adapter->link_speed == SPEED_1000) &&
Alexander Duyck73cd78f2009-02-12 18:16:59 +00005344 (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
Auke Kok9d5c8242008-01-24 02:22:38 -08005345 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
5346 adapter->phy_stats.idle_errors += phy_tmp;
5347 }
5348 }
5349
5350 /* Management Stats */
5351 adapter->stats.mgptc += rd32(E1000_MGTPTC);
5352 adapter->stats.mgprc += rd32(E1000_MGTPRC);
5353 adapter->stats.mgpdc += rd32(E1000_MGTPDC);
Carolyn Wyborny0a915b92011-02-26 07:42:37 +00005354
5355 /* OS2BMC Stats */
5356 reg = rd32(E1000_MANC);
5357 if (reg & E1000_MANC_EN_BMC2OS) {
5358 adapter->stats.o2bgptc += rd32(E1000_O2BGPTC);
5359 adapter->stats.o2bspc += rd32(E1000_O2BSPC);
5360 adapter->stats.b2ospc += rd32(E1000_B2OSPC);
5361 adapter->stats.b2ogprc += rd32(E1000_B2OGPRC);
5362 }
Auke Kok9d5c8242008-01-24 02:22:38 -08005363}
5364
Auke Kok9d5c8242008-01-24 02:22:38 -08005365static irqreturn_t igb_msix_other(int irq, void *data)
5366{
Alexander Duyck047e0032009-10-27 15:49:27 +00005367 struct igb_adapter *adapter = data;
Auke Kok9d5c8242008-01-24 02:22:38 -08005368 struct e1000_hw *hw = &adapter->hw;
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005369 u32 icr = rd32(E1000_ICR);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005370 /* reading ICR causes bit 31 of EICR to be cleared */
Alexander Duyckdda0e082009-02-06 23:19:08 +00005371
Alexander Duyck7f081d42010-01-07 17:41:00 +00005372 if (icr & E1000_ICR_DRSTA)
5373 schedule_work(&adapter->reset_task);
5374
Alexander Duyck047e0032009-10-27 15:49:27 +00005375 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00005376 /* HW is reporting DMA is out of sync */
5377 adapter->stats.doosync++;
Greg Rose13800462010-11-06 02:08:26 +00005378 /* The DMA Out of Sync is also indication of a spoof event
5379 * in IOV mode. Check the Wrong VM Behavior register to
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005380 * see if it is really a spoof event.
5381 */
Greg Rose13800462010-11-06 02:08:26 +00005382 igb_check_wvbr(adapter);
Alexander Duyckdda0e082009-02-06 23:19:08 +00005383 }
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00005384
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005385 /* Check for a mailbox event */
5386 if (icr & E1000_ICR_VMMB)
5387 igb_msg_task(adapter);
5388
5389 if (icr & E1000_ICR_LSC) {
5390 hw->mac.get_link_status = 1;
5391 /* guard against interrupt when we're going down */
5392 if (!test_bit(__IGB_DOWN, &adapter->state))
5393 mod_timer(&adapter->watchdog_timer, jiffies + 1);
5394 }
5395
Matthew Vick1f6e8172012-08-18 07:26:33 +00005396 if (icr & E1000_ICR_TS) {
5397 u32 tsicr = rd32(E1000_TSICR);
5398
5399 if (tsicr & E1000_TSICR_TXTS) {
5400 /* acknowledge the interrupt */
5401 wr32(E1000_TSICR, E1000_TSICR_TXTS);
5402 /* retrieve hardware timestamp */
5403 schedule_work(&adapter->ptp_tx_work);
5404 }
5405 }
Matthew Vick1f6e8172012-08-18 07:26:33 +00005406
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005407 wr32(E1000_EIMS, adapter->eims_other);
Auke Kok9d5c8242008-01-24 02:22:38 -08005408
5409 return IRQ_HANDLED;
5410}
5411
Alexander Duyck047e0032009-10-27 15:49:27 +00005412static void igb_write_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08005413{
Alexander Duyck26b39272010-02-17 01:00:41 +00005414 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck047e0032009-10-27 15:49:27 +00005415 u32 itr_val = q_vector->itr_val & 0x7FFC;
Auke Kok9d5c8242008-01-24 02:22:38 -08005416
Alexander Duyck047e0032009-10-27 15:49:27 +00005417 if (!q_vector->set_itr)
5418 return;
Alexander Duyck73cd78f2009-02-12 18:16:59 +00005419
Alexander Duyck047e0032009-10-27 15:49:27 +00005420 if (!itr_val)
5421 itr_val = 0x4;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005422
Alexander Duyck26b39272010-02-17 01:00:41 +00005423 if (adapter->hw.mac.type == e1000_82575)
5424 itr_val |= itr_val << 16;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005425 else
Alexander Duyck0ba82992011-08-26 07:45:47 +00005426 itr_val |= E1000_EITR_CNT_IGNR;
Alexander Duyck047e0032009-10-27 15:49:27 +00005427
5428 writel(itr_val, q_vector->itr_register);
5429 q_vector->set_itr = 0;
5430}
5431
5432static irqreturn_t igb_msix_ring(int irq, void *data)
5433{
5434 struct igb_q_vector *q_vector = data;
5435
5436 /* Write the ITR value calculated from the previous interrupt. */
5437 igb_write_itr(q_vector);
5438
5439 napi_schedule(&q_vector->napi);
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005440
Auke Kok9d5c8242008-01-24 02:22:38 -08005441 return IRQ_HANDLED;
5442}
5443
Jeff Kirsher421e02f2008-10-17 11:08:31 -07005444#ifdef CONFIG_IGB_DCA
Alexander Duyck6a050042012-09-25 00:31:27 +00005445static void igb_update_tx_dca(struct igb_adapter *adapter,
5446 struct igb_ring *tx_ring,
5447 int cpu)
5448{
5449 struct e1000_hw *hw = &adapter->hw;
5450 u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
5451
5452 if (hw->mac.type != e1000_82575)
5453 txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT;
5454
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005455 /* We can enable relaxed ordering for reads, but not writes when
Alexander Duyck6a050042012-09-25 00:31:27 +00005456 * DCA is enabled. This is due to a known issue in some chipsets
5457 * which will cause the DCA tag to be cleared.
5458 */
5459 txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN |
5460 E1000_DCA_TXCTRL_DATA_RRO_EN |
5461 E1000_DCA_TXCTRL_DESC_DCA_EN;
5462
5463 wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl);
5464}
5465
5466static void igb_update_rx_dca(struct igb_adapter *adapter,
5467 struct igb_ring *rx_ring,
5468 int cpu)
5469{
5470 struct e1000_hw *hw = &adapter->hw;
5471 u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu);
5472
5473 if (hw->mac.type != e1000_82575)
5474 rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT;
5475
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005476 /* We can enable relaxed ordering for reads, but not writes when
Alexander Duyck6a050042012-09-25 00:31:27 +00005477 * DCA is enabled. This is due to a known issue in some chipsets
5478 * which will cause the DCA tag to be cleared.
5479 */
5480 rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN |
5481 E1000_DCA_RXCTRL_DESC_DCA_EN;
5482
5483 wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl);
5484}
5485
Alexander Duyck047e0032009-10-27 15:49:27 +00005486static void igb_update_dca(struct igb_q_vector *q_vector)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005487{
Alexander Duyck047e0032009-10-27 15:49:27 +00005488 struct igb_adapter *adapter = q_vector->adapter;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005489 int cpu = get_cpu();
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005490
Alexander Duyck047e0032009-10-27 15:49:27 +00005491 if (q_vector->cpu == cpu)
5492 goto out_no_update;
5493
Alexander Duyck6a050042012-09-25 00:31:27 +00005494 if (q_vector->tx.ring)
5495 igb_update_tx_dca(adapter, q_vector->tx.ring, cpu);
5496
5497 if (q_vector->rx.ring)
5498 igb_update_rx_dca(adapter, q_vector->rx.ring, cpu);
5499
Alexander Duyck047e0032009-10-27 15:49:27 +00005500 q_vector->cpu = cpu;
5501out_no_update:
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005502 put_cpu();
5503}
5504
5505static void igb_setup_dca(struct igb_adapter *adapter)
5506{
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00005507 struct e1000_hw *hw = &adapter->hw;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005508 int i;
5509
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005510 if (!(adapter->flags & IGB_FLAG_DCA_ENABLED))
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005511 return;
5512
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00005513 /* Always use CB2 mode, difference is masked in the CB driver. */
5514 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2);
5515
Alexander Duyck047e0032009-10-27 15:49:27 +00005516 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck26b39272010-02-17 01:00:41 +00005517 adapter->q_vector[i]->cpu = -1;
5518 igb_update_dca(adapter->q_vector[i]);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005519 }
5520}
5521
5522static int __igb_notify_dca(struct device *dev, void *data)
5523{
5524 struct net_device *netdev = dev_get_drvdata(dev);
5525 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005526 struct pci_dev *pdev = adapter->pdev;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005527 struct e1000_hw *hw = &adapter->hw;
5528 unsigned long event = *(unsigned long *)data;
5529
5530 switch (event) {
5531 case DCA_PROVIDER_ADD:
5532 /* if already enabled, don't do it again */
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005533 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005534 break;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005535 if (dca_add_requester(dev) == 0) {
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08005536 adapter->flags |= IGB_FLAG_DCA_ENABLED;
Alexander Duyck090b1792009-10-27 23:51:55 +00005537 dev_info(&pdev->dev, "DCA enabled\n");
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005538 igb_setup_dca(adapter);
5539 break;
5540 }
5541 /* Fall Through since DCA is disabled. */
5542 case DCA_PROVIDER_REMOVE:
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005543 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005544 /* without this a class_device is left
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005545 * hanging around in the sysfs model
5546 */
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005547 dca_remove_requester(dev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005548 dev_info(&pdev->dev, "DCA disabled\n");
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005549 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
Alexander Duyckcbd347a2009-02-15 23:59:44 -08005550 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005551 }
5552 break;
5553 }
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08005554
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005555 return 0;
5556}
5557
5558static int igb_notify_dca(struct notifier_block *nb, unsigned long event,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005559 void *p)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005560{
5561 int ret_val;
5562
5563 ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005564 __igb_notify_dca);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005565
5566 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
5567}
Jeff Kirsher421e02f2008-10-17 11:08:31 -07005568#endif /* CONFIG_IGB_DCA */
Auke Kok9d5c8242008-01-24 02:22:38 -08005569
Greg Rose0224d662011-10-14 02:57:14 +00005570#ifdef CONFIG_PCI_IOV
5571static int igb_vf_configure(struct igb_adapter *adapter, int vf)
5572{
5573 unsigned char mac_addr[ETH_ALEN];
Greg Rose0224d662011-10-14 02:57:14 +00005574
Mitch A Williams5ac6f912013-01-18 08:57:20 +00005575 eth_zero_addr(mac_addr);
Greg Rose0224d662011-10-14 02:57:14 +00005576 igb_set_vf_mac(adapter, vf, mac_addr);
5577
Lior Levy70ea4782013-03-03 20:27:48 +00005578 /* By default spoof check is enabled for all VFs */
5579 adapter->vf_data[vf].spoofchk_enabled = true;
5580
Stefan Assmannf5571472012-08-18 04:06:11 +00005581 return 0;
Greg Rose0224d662011-10-14 02:57:14 +00005582}
5583
Greg Rose0224d662011-10-14 02:57:14 +00005584#endif
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005585static void igb_ping_all_vfs(struct igb_adapter *adapter)
5586{
5587 struct e1000_hw *hw = &adapter->hw;
5588 u32 ping;
5589 int i;
5590
5591 for (i = 0 ; i < adapter->vfs_allocated_count; i++) {
5592 ping = E1000_PF_CONTROL_MSG;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005593 if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005594 ping |= E1000_VT_MSGTYPE_CTS;
5595 igb_write_mbx(hw, &ping, 1, i);
5596 }
5597}
5598
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005599static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
5600{
5601 struct e1000_hw *hw = &adapter->hw;
5602 u32 vmolr = rd32(E1000_VMOLR(vf));
5603 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
5604
Alexander Duyckd85b90042010-09-22 17:56:20 +00005605 vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC |
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005606 IGB_VF_FLAG_MULTI_PROMISC);
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005607 vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
5608
5609 if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) {
5610 vmolr |= E1000_VMOLR_MPME;
Alexander Duyckd85b90042010-09-22 17:56:20 +00005611 vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005612 *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST;
5613 } else {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005614 /* if we have hashes and we are clearing a multicast promisc
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005615 * flag we need to write the hashes to the MTA as this step
5616 * was previously skipped
5617 */
5618 if (vf_data->num_vf_mc_hashes > 30) {
5619 vmolr |= E1000_VMOLR_MPME;
5620 } else if (vf_data->num_vf_mc_hashes) {
5621 int j;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005622
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005623 vmolr |= E1000_VMOLR_ROMPE;
5624 for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
5625 igb_mta_set(hw, vf_data->vf_mc_hashes[j]);
5626 }
5627 }
5628
5629 wr32(E1000_VMOLR(vf), vmolr);
5630
5631 /* there are flags left unprocessed, likely not supported */
5632 if (*msgbuf & E1000_VT_MSGINFO_MASK)
5633 return -EINVAL;
5634
5635 return 0;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005636}
5637
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005638static int igb_set_vf_multicasts(struct igb_adapter *adapter,
5639 u32 *msgbuf, u32 vf)
5640{
5641 int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
5642 u16 *hash_list = (u16 *)&msgbuf[1];
5643 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
5644 int i;
5645
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005646 /* salt away the number of multicast addresses assigned
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005647 * to this VF for later use to restore when the PF multi cast
5648 * list changes
5649 */
5650 vf_data->num_vf_mc_hashes = n;
5651
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005652 /* only up to 30 hash values supported */
5653 if (n > 30)
5654 n = 30;
5655
5656 /* store the hashes for later use */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005657 for (i = 0; i < n; i++)
Joe Perchesa419aef2009-08-18 11:18:35 -07005658 vf_data->vf_mc_hashes[i] = hash_list[i];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005659
5660 /* Flush and reset the mta with the new values */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00005661 igb_set_rx_mode(adapter->netdev);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005662
5663 return 0;
5664}
5665
5666static void igb_restore_vf_multicasts(struct igb_adapter *adapter)
5667{
5668 struct e1000_hw *hw = &adapter->hw;
5669 struct vf_data_storage *vf_data;
5670 int i, j;
5671
5672 for (i = 0; i < adapter->vfs_allocated_count; i++) {
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005673 u32 vmolr = rd32(E1000_VMOLR(i));
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005674
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005675 vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
5676
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005677 vf_data = &adapter->vf_data[i];
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005678
5679 if ((vf_data->num_vf_mc_hashes > 30) ||
5680 (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) {
5681 vmolr |= E1000_VMOLR_MPME;
5682 } else if (vf_data->num_vf_mc_hashes) {
5683 vmolr |= E1000_VMOLR_ROMPE;
5684 for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
5685 igb_mta_set(hw, vf_data->vf_mc_hashes[j]);
5686 }
5687 wr32(E1000_VMOLR(i), vmolr);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005688 }
5689}
5690
5691static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf)
5692{
5693 struct e1000_hw *hw = &adapter->hw;
5694 u32 pool_mask, reg, vid;
5695 int i;
5696
5697 pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
5698
5699 /* Find the vlan filter for this id */
5700 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5701 reg = rd32(E1000_VLVF(i));
5702
5703 /* remove the vf from the pool */
5704 reg &= ~pool_mask;
5705
5706 /* if pool is empty then remove entry from vfta */
5707 if (!(reg & E1000_VLVF_POOLSEL_MASK) &&
5708 (reg & E1000_VLVF_VLANID_ENABLE)) {
5709 reg = 0;
5710 vid = reg & E1000_VLVF_VLANID_MASK;
5711 igb_vfta_set(hw, vid, false);
5712 }
5713
5714 wr32(E1000_VLVF(i), reg);
5715 }
Alexander Duyckae641bd2009-09-03 14:49:33 +00005716
5717 adapter->vf_data[vf].vlans_enabled = 0;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005718}
5719
5720static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf)
5721{
5722 struct e1000_hw *hw = &adapter->hw;
5723 u32 reg, i;
5724
Alexander Duyck51466232009-10-27 23:47:35 +00005725 /* The vlvf table only exists on 82576 hardware and newer */
5726 if (hw->mac.type < e1000_82576)
5727 return -1;
5728
5729 /* we only need to do this if VMDq is enabled */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005730 if (!adapter->vfs_allocated_count)
5731 return -1;
5732
5733 /* Find the vlan filter for this id */
5734 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5735 reg = rd32(E1000_VLVF(i));
5736 if ((reg & E1000_VLVF_VLANID_ENABLE) &&
5737 vid == (reg & E1000_VLVF_VLANID_MASK))
5738 break;
5739 }
5740
5741 if (add) {
5742 if (i == E1000_VLVF_ARRAY_SIZE) {
5743 /* Did not find a matching VLAN ID entry that was
5744 * enabled. Search for a free filter entry, i.e.
5745 * one without the enable bit set
5746 */
5747 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5748 reg = rd32(E1000_VLVF(i));
5749 if (!(reg & E1000_VLVF_VLANID_ENABLE))
5750 break;
5751 }
5752 }
5753 if (i < E1000_VLVF_ARRAY_SIZE) {
5754 /* Found an enabled/available entry */
5755 reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
5756
5757 /* if !enabled we need to set this up in vfta */
5758 if (!(reg & E1000_VLVF_VLANID_ENABLE)) {
Alexander Duyck51466232009-10-27 23:47:35 +00005759 /* add VID to filter table */
5760 igb_vfta_set(hw, vid, true);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005761 reg |= E1000_VLVF_VLANID_ENABLE;
5762 }
Alexander Duyckcad6d052009-03-13 20:41:37 +00005763 reg &= ~E1000_VLVF_VLANID_MASK;
5764 reg |= vid;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005765 wr32(E1000_VLVF(i), reg);
Alexander Duyckae641bd2009-09-03 14:49:33 +00005766
5767 /* do not modify RLPML for PF devices */
5768 if (vf >= adapter->vfs_allocated_count)
5769 return 0;
5770
5771 if (!adapter->vf_data[vf].vlans_enabled) {
5772 u32 size;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005773
Alexander Duyckae641bd2009-09-03 14:49:33 +00005774 reg = rd32(E1000_VMOLR(vf));
5775 size = reg & E1000_VMOLR_RLPML_MASK;
5776 size += 4;
5777 reg &= ~E1000_VMOLR_RLPML_MASK;
5778 reg |= size;
5779 wr32(E1000_VMOLR(vf), reg);
5780 }
Alexander Duyckae641bd2009-09-03 14:49:33 +00005781
Alexander Duyck51466232009-10-27 23:47:35 +00005782 adapter->vf_data[vf].vlans_enabled++;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005783 }
5784 } else {
5785 if (i < E1000_VLVF_ARRAY_SIZE) {
5786 /* remove vf from the pool */
5787 reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf));
5788 /* if pool is empty then remove entry from vfta */
5789 if (!(reg & E1000_VLVF_POOLSEL_MASK)) {
5790 reg = 0;
5791 igb_vfta_set(hw, vid, false);
5792 }
5793 wr32(E1000_VLVF(i), reg);
Alexander Duyckae641bd2009-09-03 14:49:33 +00005794
5795 /* do not modify RLPML for PF devices */
5796 if (vf >= adapter->vfs_allocated_count)
5797 return 0;
5798
5799 adapter->vf_data[vf].vlans_enabled--;
5800 if (!adapter->vf_data[vf].vlans_enabled) {
5801 u32 size;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005802
Alexander Duyckae641bd2009-09-03 14:49:33 +00005803 reg = rd32(E1000_VMOLR(vf));
5804 size = reg & E1000_VMOLR_RLPML_MASK;
5805 size -= 4;
5806 reg &= ~E1000_VMOLR_RLPML_MASK;
5807 reg |= size;
5808 wr32(E1000_VMOLR(vf), reg);
5809 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005810 }
5811 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00005812 return 0;
5813}
5814
5815static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf)
5816{
5817 struct e1000_hw *hw = &adapter->hw;
5818
5819 if (vid)
5820 wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT));
5821 else
5822 wr32(E1000_VMVIR(vf), 0);
5823}
5824
5825static int igb_ndo_set_vf_vlan(struct net_device *netdev,
5826 int vf, u16 vlan, u8 qos)
5827{
5828 int err = 0;
5829 struct igb_adapter *adapter = netdev_priv(netdev);
5830
5831 if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7))
5832 return -EINVAL;
5833 if (vlan || qos) {
5834 err = igb_vlvf_set(adapter, vlan, !!vlan, vf);
5835 if (err)
5836 goto out;
5837 igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
5838 igb_set_vmolr(adapter, vf, !vlan);
5839 adapter->vf_data[vf].pf_vlan = vlan;
5840 adapter->vf_data[vf].pf_qos = qos;
5841 dev_info(&adapter->pdev->dev,
5842 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
5843 if (test_bit(__IGB_DOWN, &adapter->state)) {
5844 dev_warn(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005845 "The VF VLAN has been set, but the PF device is not up.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00005846 dev_warn(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005847 "Bring the PF device up before attempting to use the VF device.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00005848 }
5849 } else {
5850 igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005851 false, vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00005852 igb_set_vmvir(adapter, vlan, vf);
5853 igb_set_vmolr(adapter, vf, true);
5854 adapter->vf_data[vf].pf_vlan = 0;
5855 adapter->vf_data[vf].pf_qos = 0;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005856 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00005857out:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005858 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005859}
5860
Greg Rose6f3dc3192013-03-26 06:19:41 +00005861static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid)
5862{
5863 struct e1000_hw *hw = &adapter->hw;
5864 int i;
5865 u32 reg;
5866
5867 /* Find the vlan filter for this id */
5868 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5869 reg = rd32(E1000_VLVF(i));
5870 if ((reg & E1000_VLVF_VLANID_ENABLE) &&
5871 vid == (reg & E1000_VLVF_VLANID_MASK))
5872 break;
5873 }
5874
5875 if (i >= E1000_VLVF_ARRAY_SIZE)
5876 i = -1;
5877
5878 return i;
5879}
5880
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005881static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
5882{
Greg Rose6f3dc3192013-03-26 06:19:41 +00005883 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005884 int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
5885 int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK);
Greg Rose6f3dc3192013-03-26 06:19:41 +00005886 int err = 0;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005887
Greg Rose6f3dc3192013-03-26 06:19:41 +00005888 /* If in promiscuous mode we need to make sure the PF also has
5889 * the VLAN filter set.
5890 */
5891 if (add && (adapter->netdev->flags & IFF_PROMISC))
5892 err = igb_vlvf_set(adapter, vid, add,
5893 adapter->vfs_allocated_count);
5894 if (err)
5895 goto out;
5896
5897 err = igb_vlvf_set(adapter, vid, add, vf);
5898
5899 if (err)
5900 goto out;
5901
5902 /* Go through all the checks to see if the VLAN filter should
5903 * be wiped completely.
5904 */
5905 if (!add && (adapter->netdev->flags & IFF_PROMISC)) {
5906 u32 vlvf, bits;
Greg Rose6f3dc3192013-03-26 06:19:41 +00005907 int regndx = igb_find_vlvf_entry(adapter, vid);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005908
Greg Rose6f3dc3192013-03-26 06:19:41 +00005909 if (regndx < 0)
5910 goto out;
5911 /* See if any other pools are set for this VLAN filter
5912 * entry other than the PF.
5913 */
5914 vlvf = bits = rd32(E1000_VLVF(regndx));
5915 bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT +
5916 adapter->vfs_allocated_count);
5917 /* If the filter was removed then ensure PF pool bit
5918 * is cleared if the PF only added itself to the pool
5919 * because the PF is in promiscuous mode.
5920 */
5921 if ((vlvf & VLAN_VID_MASK) == vid &&
5922 !test_bit(vid, adapter->active_vlans) &&
5923 !bits)
5924 igb_vlvf_set(adapter, vid, add,
5925 adapter->vfs_allocated_count);
5926 }
5927
5928out:
5929 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005930}
5931
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005932static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005933{
Greg Rose8fa7e0f2010-11-06 05:43:21 +00005934 /* clear flags - except flag that indicates PF has set the MAC */
5935 adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005936 adapter->vf_data[vf].last_nack = jiffies;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005937
5938 /* reset offloads to defaults */
Williams, Mitch A8151d292010-02-10 01:44:24 +00005939 igb_set_vmolr(adapter, vf, true);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005940
5941 /* reset vlans for device */
5942 igb_clear_vf_vfta(adapter, vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00005943 if (adapter->vf_data[vf].pf_vlan)
5944 igb_ndo_set_vf_vlan(adapter->netdev, vf,
5945 adapter->vf_data[vf].pf_vlan,
5946 adapter->vf_data[vf].pf_qos);
5947 else
5948 igb_clear_vf_vfta(adapter, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005949
5950 /* reset multicast table array for vf */
5951 adapter->vf_data[vf].num_vf_mc_hashes = 0;
5952
5953 /* Flush and reset the mta with the new values */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00005954 igb_set_rx_mode(adapter->netdev);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005955}
5956
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005957static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
5958{
5959 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
5960
Mitch A Williams5ac6f912013-01-18 08:57:20 +00005961 /* clear mac address as we were hotplug removed/added */
Williams, Mitch A8151d292010-02-10 01:44:24 +00005962 if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC))
Mitch A Williams5ac6f912013-01-18 08:57:20 +00005963 eth_zero_addr(vf_mac);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005964
5965 /* process remaining reset events */
5966 igb_vf_reset(adapter, vf);
5967}
5968
5969static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005970{
5971 struct e1000_hw *hw = &adapter->hw;
5972 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
Alexander Duyckff41f8d2009-09-03 14:48:56 +00005973 int rar_entry = hw->mac.rar_entry_count - (vf + 1);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005974 u32 reg, msgbuf[3];
5975 u8 *addr = (u8 *)(&msgbuf[1]);
5976
5977 /* process all the same items cleared in a function level reset */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005978 igb_vf_reset(adapter, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005979
5980 /* set vf mac address */
Alexander Duyck26ad9172009-10-05 06:32:49 +00005981 igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005982
5983 /* enable transmit and receive for vf */
5984 reg = rd32(E1000_VFTE);
5985 wr32(E1000_VFTE, reg | (1 << vf));
5986 reg = rd32(E1000_VFRE);
5987 wr32(E1000_VFRE, reg | (1 << vf));
5988
Greg Rose8fa7e0f2010-11-06 05:43:21 +00005989 adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005990
5991 /* reply to reset with ack and vf mac address */
5992 msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK;
Joe Perchesd458cdf2013-10-01 19:04:40 -07005993 memcpy(addr, vf_mac, ETH_ALEN);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005994 igb_write_mbx(hw, msgbuf, 3, vf);
5995}
5996
5997static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
5998{
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005999 /* The VF MAC Address is stored in a packed array of bytes
Greg Rosede42edd2010-07-01 13:39:23 +00006000 * starting at the second 32 bit word of the msg array
6001 */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006002 unsigned char *addr = (char *)&msg[1];
6003 int err = -1;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006004
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006005 if (is_valid_ether_addr(addr))
6006 err = igb_set_vf_mac(adapter, vf, addr);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006007
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006008 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006009}
6010
6011static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf)
6012{
6013 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006014 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006015 u32 msg = E1000_VT_MSGTYPE_NACK;
6016
6017 /* if device isn't clear to send it shouldn't be reading either */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006018 if (!(vf_data->flags & IGB_VF_FLAG_CTS) &&
6019 time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006020 igb_write_mbx(hw, &msg, 1, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006021 vf_data->last_nack = jiffies;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006022 }
6023}
6024
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006025static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006026{
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006027 struct pci_dev *pdev = adapter->pdev;
6028 u32 msgbuf[E1000_VFMAILBOX_SIZE];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006029 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006030 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006031 s32 retval;
6032
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006033 retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006034
Alexander Duyckfef45f42009-12-11 22:57:34 -08006035 if (retval) {
6036 /* if receive failed revoke VF CTS stats and restart init */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006037 dev_err(&pdev->dev, "Error receiving message from VF\n");
Alexander Duyckfef45f42009-12-11 22:57:34 -08006038 vf_data->flags &= ~IGB_VF_FLAG_CTS;
6039 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ)))
6040 return;
6041 goto out;
6042 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006043
6044 /* this is a message we already processed, do nothing */
6045 if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK))
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006046 return;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006047
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006048 /* until the vf completes a reset it should not be
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006049 * allowed to start any configuration.
6050 */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006051 if (msgbuf[0] == E1000_VF_RESET) {
6052 igb_vf_reset_msg(adapter, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006053 return;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006054 }
6055
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006056 if (!(vf_data->flags & IGB_VF_FLAG_CTS)) {
Alexander Duyckfef45f42009-12-11 22:57:34 -08006057 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ)))
6058 return;
6059 retval = -1;
6060 goto out;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006061 }
6062
6063 switch ((msgbuf[0] & 0xFFFF)) {
6064 case E1000_VF_SET_MAC_ADDR:
Greg Rosea6b5ea32010-11-06 05:42:59 +00006065 retval = -EINVAL;
6066 if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC))
6067 retval = igb_set_vf_mac_addr(adapter, msgbuf, vf);
6068 else
6069 dev_warn(&pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006070 "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n",
6071 vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006072 break;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00006073 case E1000_VF_SET_PROMISC:
6074 retval = igb_set_vf_promisc(adapter, msgbuf, vf);
6075 break;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006076 case E1000_VF_SET_MULTICAST:
6077 retval = igb_set_vf_multicasts(adapter, msgbuf, vf);
6078 break;
6079 case E1000_VF_SET_LPE:
6080 retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf);
6081 break;
6082 case E1000_VF_SET_VLAN:
Greg Rosea6b5ea32010-11-06 05:42:59 +00006083 retval = -1;
6084 if (vf_data->pf_vlan)
6085 dev_warn(&pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006086 "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n",
6087 vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00006088 else
6089 retval = igb_set_vf_vlan(adapter, msgbuf, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006090 break;
6091 default:
Alexander Duyck090b1792009-10-27 23:51:55 +00006092 dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006093 retval = -1;
6094 break;
6095 }
6096
Alexander Duyckfef45f42009-12-11 22:57:34 -08006097 msgbuf[0] |= E1000_VT_MSGTYPE_CTS;
6098out:
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006099 /* notify the VF of the results of what it sent us */
6100 if (retval)
6101 msgbuf[0] |= E1000_VT_MSGTYPE_NACK;
6102 else
6103 msgbuf[0] |= E1000_VT_MSGTYPE_ACK;
6104
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006105 igb_write_mbx(hw, msgbuf, 1, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006106}
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006107
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006108static void igb_msg_task(struct igb_adapter *adapter)
6109{
6110 struct e1000_hw *hw = &adapter->hw;
6111 u32 vf;
6112
6113 for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
6114 /* process any reset requests */
6115 if (!igb_check_for_rst(hw, vf))
6116 igb_vf_reset_event(adapter, vf);
6117
6118 /* process any messages pending */
6119 if (!igb_check_for_msg(hw, vf))
6120 igb_rcv_msg_from_vf(adapter, vf);
6121
6122 /* process any acks */
6123 if (!igb_check_for_ack(hw, vf))
6124 igb_rcv_ack_from_vf(adapter, vf);
6125 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006126}
6127
Auke Kok9d5c8242008-01-24 02:22:38 -08006128/**
Alexander Duyck68d480c2009-10-05 06:33:08 +00006129 * igb_set_uta - Set unicast filter table address
6130 * @adapter: board private structure
6131 *
6132 * The unicast table address is a register array of 32-bit registers.
6133 * The table is meant to be used in a way similar to how the MTA is used
6134 * however due to certain limitations in the hardware it is necessary to
Lucas De Marchi25985ed2011-03-30 22:57:33 -03006135 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
6136 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
Alexander Duyck68d480c2009-10-05 06:33:08 +00006137 **/
6138static void igb_set_uta(struct igb_adapter *adapter)
6139{
6140 struct e1000_hw *hw = &adapter->hw;
6141 int i;
6142
6143 /* The UTA table only exists on 82576 hardware and newer */
6144 if (hw->mac.type < e1000_82576)
6145 return;
6146
6147 /* we only need to do this if VMDq is enabled */
6148 if (!adapter->vfs_allocated_count)
6149 return;
6150
6151 for (i = 0; i < hw->mac.uta_reg_count; i++)
6152 array_wr32(E1000_UTA, i, ~0);
6153}
6154
6155/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006156 * igb_intr_msi - Interrupt Handler
6157 * @irq: interrupt number
6158 * @data: pointer to a network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08006159 **/
6160static irqreturn_t igb_intr_msi(int irq, void *data)
6161{
Alexander Duyck047e0032009-10-27 15:49:27 +00006162 struct igb_adapter *adapter = data;
6163 struct igb_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9d5c8242008-01-24 02:22:38 -08006164 struct e1000_hw *hw = &adapter->hw;
6165 /* read ICR disables interrupts using IAM */
6166 u32 icr = rd32(E1000_ICR);
6167
Alexander Duyck047e0032009-10-27 15:49:27 +00006168 igb_write_itr(q_vector);
Auke Kok9d5c8242008-01-24 02:22:38 -08006169
Alexander Duyck7f081d42010-01-07 17:41:00 +00006170 if (icr & E1000_ICR_DRSTA)
6171 schedule_work(&adapter->reset_task);
6172
Alexander Duyck047e0032009-10-27 15:49:27 +00006173 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00006174 /* HW is reporting DMA is out of sync */
6175 adapter->stats.doosync++;
6176 }
6177
Auke Kok9d5c8242008-01-24 02:22:38 -08006178 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
6179 hw->mac.get_link_status = 1;
6180 if (!test_bit(__IGB_DOWN, &adapter->state))
6181 mod_timer(&adapter->watchdog_timer, jiffies + 1);
6182 }
6183
Matthew Vick1f6e8172012-08-18 07:26:33 +00006184 if (icr & E1000_ICR_TS) {
6185 u32 tsicr = rd32(E1000_TSICR);
6186
6187 if (tsicr & E1000_TSICR_TXTS) {
6188 /* acknowledge the interrupt */
6189 wr32(E1000_TSICR, E1000_TSICR_TXTS);
6190 /* retrieve hardware timestamp */
6191 schedule_work(&adapter->ptp_tx_work);
6192 }
6193 }
Matthew Vick1f6e8172012-08-18 07:26:33 +00006194
Alexander Duyck047e0032009-10-27 15:49:27 +00006195 napi_schedule(&q_vector->napi);
Auke Kok9d5c8242008-01-24 02:22:38 -08006196
6197 return IRQ_HANDLED;
6198}
6199
6200/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006201 * igb_intr - Legacy Interrupt Handler
6202 * @irq: interrupt number
6203 * @data: pointer to a network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08006204 **/
6205static irqreturn_t igb_intr(int irq, void *data)
6206{
Alexander Duyck047e0032009-10-27 15:49:27 +00006207 struct igb_adapter *adapter = data;
6208 struct igb_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9d5c8242008-01-24 02:22:38 -08006209 struct e1000_hw *hw = &adapter->hw;
6210 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006211 * need for the IMC write
6212 */
Auke Kok9d5c8242008-01-24 02:22:38 -08006213 u32 icr = rd32(E1000_ICR);
Auke Kok9d5c8242008-01-24 02:22:38 -08006214
6215 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006216 * not set, then the adapter didn't send an interrupt
6217 */
Auke Kok9d5c8242008-01-24 02:22:38 -08006218 if (!(icr & E1000_ICR_INT_ASSERTED))
6219 return IRQ_NONE;
6220
Alexander Duyck0ba82992011-08-26 07:45:47 +00006221 igb_write_itr(q_vector);
6222
Alexander Duyck7f081d42010-01-07 17:41:00 +00006223 if (icr & E1000_ICR_DRSTA)
6224 schedule_work(&adapter->reset_task);
6225
Alexander Duyck047e0032009-10-27 15:49:27 +00006226 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00006227 /* HW is reporting DMA is out of sync */
6228 adapter->stats.doosync++;
6229 }
6230
Auke Kok9d5c8242008-01-24 02:22:38 -08006231 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
6232 hw->mac.get_link_status = 1;
6233 /* guard against interrupt when we're going down */
6234 if (!test_bit(__IGB_DOWN, &adapter->state))
6235 mod_timer(&adapter->watchdog_timer, jiffies + 1);
6236 }
6237
Matthew Vick1f6e8172012-08-18 07:26:33 +00006238 if (icr & E1000_ICR_TS) {
6239 u32 tsicr = rd32(E1000_TSICR);
6240
6241 if (tsicr & E1000_TSICR_TXTS) {
6242 /* acknowledge the interrupt */
6243 wr32(E1000_TSICR, E1000_TSICR_TXTS);
6244 /* retrieve hardware timestamp */
6245 schedule_work(&adapter->ptp_tx_work);
6246 }
6247 }
Matthew Vick1f6e8172012-08-18 07:26:33 +00006248
Alexander Duyck047e0032009-10-27 15:49:27 +00006249 napi_schedule(&q_vector->napi);
Auke Kok9d5c8242008-01-24 02:22:38 -08006250
6251 return IRQ_HANDLED;
6252}
6253
Stephen Hemmingerc50b52a2012-01-18 22:13:26 +00006254static void igb_ring_irq_enable(struct igb_q_vector *q_vector)
Alexander Duyck46544252009-02-19 20:39:04 -08006255{
Alexander Duyck047e0032009-10-27 15:49:27 +00006256 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck46544252009-02-19 20:39:04 -08006257 struct e1000_hw *hw = &adapter->hw;
6258
Alexander Duyck0ba82992011-08-26 07:45:47 +00006259 if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) ||
6260 (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) {
6261 if ((adapter->num_q_vectors == 1) && !adapter->vf_data)
6262 igb_set_itr(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006263 else
Alexander Duyck047e0032009-10-27 15:49:27 +00006264 igb_update_ring_itr(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006265 }
6266
6267 if (!test_bit(__IGB_DOWN, &adapter->state)) {
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00006268 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Alexander Duyck047e0032009-10-27 15:49:27 +00006269 wr32(E1000_EIMS, q_vector->eims_value);
Alexander Duyck46544252009-02-19 20:39:04 -08006270 else
6271 igb_irq_enable(adapter);
6272 }
6273}
6274
Auke Kok9d5c8242008-01-24 02:22:38 -08006275/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006276 * igb_poll - NAPI Rx polling callback
6277 * @napi: napi polling structure
6278 * @budget: count of how many packets we should handle
Auke Kok9d5c8242008-01-24 02:22:38 -08006279 **/
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07006280static int igb_poll(struct napi_struct *napi, int budget)
Auke Kok9d5c8242008-01-24 02:22:38 -08006281{
Alexander Duyck047e0032009-10-27 15:49:27 +00006282 struct igb_q_vector *q_vector = container_of(napi,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006283 struct igb_q_vector,
6284 napi);
Alexander Duyck16eb8812011-08-26 07:43:54 +00006285 bool clean_complete = true;
Auke Kok9d5c8242008-01-24 02:22:38 -08006286
Jeff Kirsher421e02f2008-10-17 11:08:31 -07006287#ifdef CONFIG_IGB_DCA
Alexander Duyck047e0032009-10-27 15:49:27 +00006288 if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED)
6289 igb_update_dca(q_vector);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07006290#endif
Alexander Duyck0ba82992011-08-26 07:45:47 +00006291 if (q_vector->tx.ring)
Alexander Duyck13fde972011-10-05 13:35:24 +00006292 clean_complete = igb_clean_tx_irq(q_vector);
Auke Kok9d5c8242008-01-24 02:22:38 -08006293
Alexander Duyck0ba82992011-08-26 07:45:47 +00006294 if (q_vector->rx.ring)
Alexander Duyckcd392f52011-08-26 07:43:59 +00006295 clean_complete &= igb_clean_rx_irq(q_vector, budget);
Alexander Duyck047e0032009-10-27 15:49:27 +00006296
Alexander Duyck16eb8812011-08-26 07:43:54 +00006297 /* If all work not completed, return budget and keep polling */
6298 if (!clean_complete)
6299 return budget;
Auke Kok9d5c8242008-01-24 02:22:38 -08006300
Alexander Duyck46544252009-02-19 20:39:04 -08006301 /* If not enough Rx work done, exit the polling mode */
Alexander Duyck16eb8812011-08-26 07:43:54 +00006302 napi_complete(napi);
6303 igb_ring_irq_enable(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006304
Alexander Duyck16eb8812011-08-26 07:43:54 +00006305 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08006306}
Al Viro6d8126f2008-03-16 22:23:24 +00006307
Patrick Ohly33af6bc2009-02-12 05:03:43 +00006308/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006309 * igb_clean_tx_irq - Reclaim resources after transmit completes
6310 * @q_vector: pointer to q_vector containing needed info
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006311 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006312 * returns true if ring is completely cleaned
Auke Kok9d5c8242008-01-24 02:22:38 -08006313 **/
Alexander Duyck047e0032009-10-27 15:49:27 +00006314static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08006315{
Alexander Duyck047e0032009-10-27 15:49:27 +00006316 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck0ba82992011-08-26 07:45:47 +00006317 struct igb_ring *tx_ring = q_vector->tx.ring;
Alexander Duyck06034642011-08-26 07:44:22 +00006318 struct igb_tx_buffer *tx_buffer;
Alexander Duyckf4128782012-09-13 06:28:01 +00006319 union e1000_adv_tx_desc *tx_desc;
Auke Kok9d5c8242008-01-24 02:22:38 -08006320 unsigned int total_bytes = 0, total_packets = 0;
Alexander Duyck0ba82992011-08-26 07:45:47 +00006321 unsigned int budget = q_vector->tx.work_limit;
Alexander Duyck8542db02011-08-26 07:44:43 +00006322 unsigned int i = tx_ring->next_to_clean;
Auke Kok9d5c8242008-01-24 02:22:38 -08006323
Alexander Duyck13fde972011-10-05 13:35:24 +00006324 if (test_bit(__IGB_DOWN, &adapter->state))
6325 return true;
Alexander Duyck0e014cb2008-12-26 01:33:18 -08006326
Alexander Duyck06034642011-08-26 07:44:22 +00006327 tx_buffer = &tx_ring->tx_buffer_info[i];
Alexander Duyck13fde972011-10-05 13:35:24 +00006328 tx_desc = IGB_TX_DESC(tx_ring, i);
Alexander Duyck8542db02011-08-26 07:44:43 +00006329 i -= tx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08006330
Alexander Duyckf4128782012-09-13 06:28:01 +00006331 do {
6332 union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
Alexander Duyck8542db02011-08-26 07:44:43 +00006333
6334 /* if next_to_watch is not set then there is no work pending */
6335 if (!eop_desc)
6336 break;
Alexander Duyck13fde972011-10-05 13:35:24 +00006337
Alexander Duyckf4128782012-09-13 06:28:01 +00006338 /* prevent any other reads prior to eop_desc */
Alexander Duyck70d289b2013-01-08 07:01:03 +00006339 read_barrier_depends();
Alexander Duyckf4128782012-09-13 06:28:01 +00006340
Alexander Duyck13fde972011-10-05 13:35:24 +00006341 /* if DD is not set pending work has not been completed */
6342 if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
6343 break;
6344
Alexander Duyck8542db02011-08-26 07:44:43 +00006345 /* clear next_to_watch to prevent false hangs */
6346 tx_buffer->next_to_watch = NULL;
Alexander Duyck13fde972011-10-05 13:35:24 +00006347
Alexander Duyckebe42d12011-08-26 07:45:09 +00006348 /* update the statistics for this packet */
6349 total_bytes += tx_buffer->bytecount;
6350 total_packets += tx_buffer->gso_segs;
Alexander Duyck13fde972011-10-05 13:35:24 +00006351
Alexander Duyckebe42d12011-08-26 07:45:09 +00006352 /* free the skb */
6353 dev_kfree_skb_any(tx_buffer->skb);
Alexander Duyckebe42d12011-08-26 07:45:09 +00006354
6355 /* unmap skb header data */
6356 dma_unmap_single(tx_ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006357 dma_unmap_addr(tx_buffer, dma),
6358 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00006359 DMA_TO_DEVICE);
6360
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006361 /* clear tx_buffer data */
6362 tx_buffer->skb = NULL;
6363 dma_unmap_len_set(tx_buffer, len, 0);
6364
Alexander Duyckebe42d12011-08-26 07:45:09 +00006365 /* clear last DMA location and unmap remaining buffers */
6366 while (tx_desc != eop_desc) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006367 tx_buffer++;
6368 tx_desc++;
Auke Kok9d5c8242008-01-24 02:22:38 -08006369 i++;
Alexander Duyck8542db02011-08-26 07:44:43 +00006370 if (unlikely(!i)) {
6371 i -= tx_ring->count;
Alexander Duyck06034642011-08-26 07:44:22 +00006372 tx_buffer = tx_ring->tx_buffer_info;
Alexander Duyck13fde972011-10-05 13:35:24 +00006373 tx_desc = IGB_TX_DESC(tx_ring, 0);
6374 }
Alexander Duyckebe42d12011-08-26 07:45:09 +00006375
6376 /* unmap any remaining paged data */
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006377 if (dma_unmap_len(tx_buffer, len)) {
Alexander Duyckebe42d12011-08-26 07:45:09 +00006378 dma_unmap_page(tx_ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006379 dma_unmap_addr(tx_buffer, dma),
6380 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00006381 DMA_TO_DEVICE);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006382 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckebe42d12011-08-26 07:45:09 +00006383 }
6384 }
6385
Alexander Duyckebe42d12011-08-26 07:45:09 +00006386 /* move us one more past the eop_desc for start of next pkt */
6387 tx_buffer++;
6388 tx_desc++;
6389 i++;
6390 if (unlikely(!i)) {
6391 i -= tx_ring->count;
6392 tx_buffer = tx_ring->tx_buffer_info;
6393 tx_desc = IGB_TX_DESC(tx_ring, 0);
6394 }
Alexander Duyckf4128782012-09-13 06:28:01 +00006395
6396 /* issue prefetch for next Tx descriptor */
6397 prefetch(tx_desc);
6398
6399 /* update budget accounting */
6400 budget--;
6401 } while (likely(budget));
Alexander Duyck0e014cb2008-12-26 01:33:18 -08006402
Eric Dumazetbdbc0632012-01-04 20:23:36 +00006403 netdev_tx_completed_queue(txring_txq(tx_ring),
6404 total_packets, total_bytes);
Alexander Duyck8542db02011-08-26 07:44:43 +00006405 i += tx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08006406 tx_ring->next_to_clean = i;
Alexander Duyck13fde972011-10-05 13:35:24 +00006407 u64_stats_update_begin(&tx_ring->tx_syncp);
6408 tx_ring->tx_stats.bytes += total_bytes;
6409 tx_ring->tx_stats.packets += total_packets;
6410 u64_stats_update_end(&tx_ring->tx_syncp);
Alexander Duyck0ba82992011-08-26 07:45:47 +00006411 q_vector->tx.total_bytes += total_bytes;
6412 q_vector->tx.total_packets += total_packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08006413
Alexander Duyck6d095fa2011-08-26 07:46:19 +00006414 if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006415 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck13fde972011-10-05 13:35:24 +00006416
Auke Kok9d5c8242008-01-24 02:22:38 -08006417 /* Detect a transmit hang in hardware, this serializes the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006418 * check with the clearing of time_stamp and movement of i
6419 */
Alexander Duyck6d095fa2011-08-26 07:46:19 +00006420 clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
Alexander Duyckf4128782012-09-13 06:28:01 +00006421 if (tx_buffer->next_to_watch &&
Alexander Duyck8542db02011-08-26 07:44:43 +00006422 time_after(jiffies, tx_buffer->time_stamp +
Joe Perches8e95a202009-12-03 07:58:21 +00006423 (adapter->tx_timeout_factor * HZ)) &&
6424 !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08006425
Auke Kok9d5c8242008-01-24 02:22:38 -08006426 /* detected Tx unit hang */
Alexander Duyck59d71982010-04-27 13:09:25 +00006427 dev_err(tx_ring->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08006428 "Detected Tx Unit Hang\n"
Alexander Duyck2d064c02008-07-08 15:10:12 -07006429 " Tx Queue <%d>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006430 " TDH <%x>\n"
6431 " TDT <%x>\n"
6432 " next_to_use <%x>\n"
6433 " next_to_clean <%x>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006434 "buffer_info[next_to_clean]\n"
6435 " time_stamp <%lx>\n"
Alexander Duyck8542db02011-08-26 07:44:43 +00006436 " next_to_watch <%p>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006437 " jiffies <%lx>\n"
6438 " desc.status <%x>\n",
Alexander Duyck2d064c02008-07-08 15:10:12 -07006439 tx_ring->queue_index,
Alexander Duyck238ac812011-08-26 07:43:48 +00006440 rd32(E1000_TDH(tx_ring->reg_idx)),
Alexander Duyckfce99e32009-10-27 15:51:27 +00006441 readl(tx_ring->tail),
Auke Kok9d5c8242008-01-24 02:22:38 -08006442 tx_ring->next_to_use,
6443 tx_ring->next_to_clean,
Alexander Duyck8542db02011-08-26 07:44:43 +00006444 tx_buffer->time_stamp,
Alexander Duyckf4128782012-09-13 06:28:01 +00006445 tx_buffer->next_to_watch,
Auke Kok9d5c8242008-01-24 02:22:38 -08006446 jiffies,
Alexander Duyckf4128782012-09-13 06:28:01 +00006447 tx_buffer->next_to_watch->wb.status);
Alexander Duyck13fde972011-10-05 13:35:24 +00006448 netif_stop_subqueue(tx_ring->netdev,
6449 tx_ring->queue_index);
6450
6451 /* we are about to reset, no point in enabling stuff */
6452 return true;
Auke Kok9d5c8242008-01-24 02:22:38 -08006453 }
6454 }
Alexander Duyck13fde972011-10-05 13:35:24 +00006455
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00006456#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Alexander Duyck13fde972011-10-05 13:35:24 +00006457 if (unlikely(total_packets &&
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006458 netif_carrier_ok(tx_ring->netdev) &&
6459 igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006460 /* Make sure that anybody stopping the queue after this
6461 * sees the new next_to_clean.
6462 */
6463 smp_mb();
6464 if (__netif_subqueue_stopped(tx_ring->netdev,
6465 tx_ring->queue_index) &&
6466 !(test_bit(__IGB_DOWN, &adapter->state))) {
6467 netif_wake_subqueue(tx_ring->netdev,
6468 tx_ring->queue_index);
6469
6470 u64_stats_update_begin(&tx_ring->tx_syncp);
6471 tx_ring->tx_stats.restart_queue++;
6472 u64_stats_update_end(&tx_ring->tx_syncp);
6473 }
6474 }
6475
6476 return !!budget;
Auke Kok9d5c8242008-01-24 02:22:38 -08006477}
6478
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006479/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006480 * igb_reuse_rx_page - page flip buffer and store it back on the ring
6481 * @rx_ring: rx descriptor ring to store buffers on
6482 * @old_buff: donor buffer to have page reused
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006483 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006484 * Synchronizes page for reuse by the adapter
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006485 **/
6486static void igb_reuse_rx_page(struct igb_ring *rx_ring,
6487 struct igb_rx_buffer *old_buff)
6488{
6489 struct igb_rx_buffer *new_buff;
6490 u16 nta = rx_ring->next_to_alloc;
6491
6492 new_buff = &rx_ring->rx_buffer_info[nta];
6493
6494 /* update, and store next to alloc */
6495 nta++;
6496 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
6497
6498 /* transfer page from old buffer to new buffer */
6499 memcpy(new_buff, old_buff, sizeof(struct igb_rx_buffer));
6500
6501 /* sync the buffer for use by the device */
6502 dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma,
6503 old_buff->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +00006504 IGB_RX_BUFSZ,
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006505 DMA_FROM_DEVICE);
6506}
6507
Alexander Duyck74e238e2013-02-02 05:07:11 +00006508static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer,
6509 struct page *page,
6510 unsigned int truesize)
6511{
6512 /* avoid re-using remote pages */
6513 if (unlikely(page_to_nid(page) != numa_node_id()))
6514 return false;
6515
6516#if (PAGE_SIZE < 8192)
6517 /* if we are only owner of page we can reuse it */
6518 if (unlikely(page_count(page) != 1))
6519 return false;
6520
6521 /* flip page offset to other buffer */
6522 rx_buffer->page_offset ^= IGB_RX_BUFSZ;
6523
6524 /* since we are the only owner of the page and we need to
6525 * increment it, just set the value to 2 in order to avoid
6526 * an unnecessary locked operation
6527 */
6528 atomic_set(&page->_count, 2);
6529#else
6530 /* move offset up to the next cache line */
6531 rx_buffer->page_offset += truesize;
6532
6533 if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ))
6534 return false;
6535
6536 /* bump ref count on page before it is given to the stack */
6537 get_page(page);
6538#endif
6539
6540 return true;
6541}
6542
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006543/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006544 * igb_add_rx_frag - Add contents of Rx buffer to sk_buff
6545 * @rx_ring: rx descriptor ring to transact packets on
6546 * @rx_buffer: buffer containing page to add
6547 * @rx_desc: descriptor containing length of buffer written by hardware
6548 * @skb: sk_buff to place the data into
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006549 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006550 * This function will add the data contained in rx_buffer->page to the skb.
6551 * This is done either through a direct copy if the data in the buffer is
6552 * less than the skb header size, otherwise it will just attach the page as
6553 * a frag to the skb.
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006554 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006555 * The function will then update the page offset if necessary and return
6556 * true if the buffer can be reused by the adapter.
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006557 **/
6558static bool igb_add_rx_frag(struct igb_ring *rx_ring,
6559 struct igb_rx_buffer *rx_buffer,
6560 union e1000_adv_rx_desc *rx_desc,
6561 struct sk_buff *skb)
6562{
6563 struct page *page = rx_buffer->page;
6564 unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
Alexander Duyck74e238e2013-02-02 05:07:11 +00006565#if (PAGE_SIZE < 8192)
6566 unsigned int truesize = IGB_RX_BUFSZ;
6567#else
6568 unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
6569#endif
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006570
6571 if ((size <= IGB_RX_HDR_LEN) && !skb_is_nonlinear(skb)) {
6572 unsigned char *va = page_address(page) + rx_buffer->page_offset;
6573
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006574 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
6575 igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
6576 va += IGB_TS_HDR_LEN;
6577 size -= IGB_TS_HDR_LEN;
6578 }
6579
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006580 memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
6581
6582 /* we can reuse buffer as-is, just make sure it is local */
6583 if (likely(page_to_nid(page) == numa_node_id()))
6584 return true;
6585
6586 /* this page cannot be reused so discard it */
6587 put_page(page);
6588 return false;
6589 }
6590
6591 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
Alexander Duyck74e238e2013-02-02 05:07:11 +00006592 rx_buffer->page_offset, size, truesize);
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006593
Alexander Duyck74e238e2013-02-02 05:07:11 +00006594 return igb_can_reuse_rx_page(rx_buffer, page, truesize);
6595}
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006596
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006597static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring,
6598 union e1000_adv_rx_desc *rx_desc,
6599 struct sk_buff *skb)
6600{
6601 struct igb_rx_buffer *rx_buffer;
6602 struct page *page;
6603
6604 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
6605
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006606 page = rx_buffer->page;
6607 prefetchw(page);
6608
6609 if (likely(!skb)) {
6610 void *page_addr = page_address(page) +
6611 rx_buffer->page_offset;
6612
6613 /* prefetch first cache line of first page */
6614 prefetch(page_addr);
6615#if L1_CACHE_BYTES < 128
6616 prefetch(page_addr + L1_CACHE_BYTES);
6617#endif
6618
6619 /* allocate a skb to store the frags */
6620 skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
6621 IGB_RX_HDR_LEN);
6622 if (unlikely(!skb)) {
6623 rx_ring->rx_stats.alloc_failed++;
6624 return NULL;
6625 }
6626
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006627 /* we will be copying header into skb->data in
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006628 * pskb_may_pull so it is in our interest to prefetch
6629 * it now to avoid a possible cache miss
6630 */
6631 prefetchw(skb->data);
6632 }
6633
6634 /* we are reusing so sync this buffer for CPU use */
6635 dma_sync_single_range_for_cpu(rx_ring->dev,
6636 rx_buffer->dma,
6637 rx_buffer->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +00006638 IGB_RX_BUFSZ,
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006639 DMA_FROM_DEVICE);
6640
6641 /* pull page into skb */
6642 if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
6643 /* hand second half of page back to the ring */
6644 igb_reuse_rx_page(rx_ring, rx_buffer);
6645 } else {
6646 /* we are not reusing the buffer so unmap it */
6647 dma_unmap_page(rx_ring->dev, rx_buffer->dma,
6648 PAGE_SIZE, DMA_FROM_DEVICE);
6649 }
6650
6651 /* clear contents of rx_buffer */
6652 rx_buffer->page = NULL;
6653
6654 return skb;
6655}
6656
Alexander Duyckcd392f52011-08-26 07:43:59 +00006657static inline void igb_rx_checksum(struct igb_ring *ring,
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006658 union e1000_adv_rx_desc *rx_desc,
6659 struct sk_buff *skb)
Auke Kok9d5c8242008-01-24 02:22:38 -08006660{
Eric Dumazetbc8acf22010-09-02 13:07:41 -07006661 skb_checksum_none_assert(skb);
Auke Kok9d5c8242008-01-24 02:22:38 -08006662
Alexander Duyck294e7d72011-08-26 07:45:57 +00006663 /* Ignore Checksum bit is set */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006664 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM))
Alexander Duyck294e7d72011-08-26 07:45:57 +00006665 return;
6666
6667 /* Rx checksum disabled via ethtool */
6668 if (!(ring->netdev->features & NETIF_F_RXCSUM))
Auke Kok9d5c8242008-01-24 02:22:38 -08006669 return;
Alexander Duyck85ad76b2009-10-27 15:52:46 +00006670
Auke Kok9d5c8242008-01-24 02:22:38 -08006671 /* TCP/UDP checksum error bit is set */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006672 if (igb_test_staterr(rx_desc,
6673 E1000_RXDEXT_STATERR_TCPE |
6674 E1000_RXDEXT_STATERR_IPE)) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006675 /* work around errata with sctp packets where the TCPE aka
Jesse Brandeburgb9473562009-04-27 22:36:13 +00006676 * L4E bit is set incorrectly on 64 byte (60 byte w/o crc)
6677 * packets, (aka let the stack check the crc32c)
6678 */
Alexander Duyck866cff02011-08-26 07:45:36 +00006679 if (!((skb->len == 60) &&
6680 test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) {
Eric Dumazet12dcd862010-10-15 17:27:10 +00006681 u64_stats_update_begin(&ring->rx_syncp);
Alexander Duyck04a5fcaa2009-10-27 15:52:27 +00006682 ring->rx_stats.csum_err++;
Eric Dumazet12dcd862010-10-15 17:27:10 +00006683 u64_stats_update_end(&ring->rx_syncp);
6684 }
Auke Kok9d5c8242008-01-24 02:22:38 -08006685 /* let the stack verify checksum errors */
Auke Kok9d5c8242008-01-24 02:22:38 -08006686 return;
6687 }
6688 /* It must be a TCP or UDP packet with a valid checksum */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006689 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS |
6690 E1000_RXD_STAT_UDPCS))
Auke Kok9d5c8242008-01-24 02:22:38 -08006691 skb->ip_summed = CHECKSUM_UNNECESSARY;
6692
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006693 dev_dbg(ring->dev, "cksum success: bits %08X\n",
6694 le32_to_cpu(rx_desc->wb.upper.status_error));
Auke Kok9d5c8242008-01-24 02:22:38 -08006695}
6696
Alexander Duyck077887c2011-08-26 07:46:29 +00006697static inline void igb_rx_hash(struct igb_ring *ring,
6698 union e1000_adv_rx_desc *rx_desc,
6699 struct sk_buff *skb)
6700{
6701 if (ring->netdev->features & NETIF_F_RXHASH)
Tom Herbert42bdf082013-12-18 16:46:58 +00006702 skb_set_hash(skb,
6703 le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
6704 PKT_HASH_TYPE_L3);
Alexander Duyck077887c2011-08-26 07:46:29 +00006705}
6706
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006707/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006708 * igb_is_non_eop - process handling of non-EOP buffers
6709 * @rx_ring: Rx ring being processed
6710 * @rx_desc: Rx descriptor for current buffer
6711 * @skb: current socket buffer containing buffer in progress
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006712 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006713 * This function updates next to clean. If the buffer is an EOP buffer
6714 * this function exits returning false, otherwise it will place the
6715 * sk_buff in the next buffer to be chained and return true indicating
6716 * that this is in fact a non-EOP buffer.
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006717 **/
6718static bool igb_is_non_eop(struct igb_ring *rx_ring,
6719 union e1000_adv_rx_desc *rx_desc)
6720{
6721 u32 ntc = rx_ring->next_to_clean + 1;
6722
6723 /* fetch, update, and store next to clean */
6724 ntc = (ntc < rx_ring->count) ? ntc : 0;
6725 rx_ring->next_to_clean = ntc;
6726
6727 prefetch(IGB_RX_DESC(rx_ring, ntc));
6728
6729 if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)))
6730 return false;
6731
6732 return true;
6733}
6734
6735/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006736 * igb_get_headlen - determine size of header for LRO/GRO
6737 * @data: pointer to the start of the headers
6738 * @max_len: total length of section to find headers in
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006739 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006740 * This function is meant to determine the length of headers that will
6741 * be recognized by hardware for LRO, and GRO offloads. The main
6742 * motivation of doing this is to only perform one pull for IPv4 TCP
6743 * packets so that we can do basic things like calculating the gso_size
6744 * based on the average data per packet.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006745 **/
6746static unsigned int igb_get_headlen(unsigned char *data,
6747 unsigned int max_len)
Alexander Duyck2d94d8a2009-07-23 18:10:06 +00006748{
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006749 union {
6750 unsigned char *network;
6751 /* l2 headers */
6752 struct ethhdr *eth;
6753 struct vlan_hdr *vlan;
6754 /* l3 headers */
6755 struct iphdr *ipv4;
6756 struct ipv6hdr *ipv6;
6757 } hdr;
6758 __be16 protocol;
6759 u8 nexthdr = 0; /* default to not TCP */
6760 u8 hlen;
6761
6762 /* this should never happen, but better safe than sorry */
6763 if (max_len < ETH_HLEN)
6764 return max_len;
6765
6766 /* initialize network frame pointer */
6767 hdr.network = data;
6768
6769 /* set first protocol and move network header forward */
6770 protocol = hdr.eth->h_proto;
6771 hdr.network += ETH_HLEN;
6772
6773 /* handle any vlan tag if present */
Joe Perches7c4d16f2014-03-13 05:19:14 +00006774 if (protocol == htons(ETH_P_8021Q)) {
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006775 if ((hdr.network - data) > (max_len - VLAN_HLEN))
6776 return max_len;
6777
6778 protocol = hdr.vlan->h_vlan_encapsulated_proto;
6779 hdr.network += VLAN_HLEN;
6780 }
6781
6782 /* handle L3 protocols */
Joe Perches7c4d16f2014-03-13 05:19:14 +00006783 if (protocol == htons(ETH_P_IP)) {
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006784 if ((hdr.network - data) > (max_len - sizeof(struct iphdr)))
6785 return max_len;
6786
6787 /* access ihl as a u8 to avoid unaligned access on ia64 */
6788 hlen = (hdr.network[0] & 0x0F) << 2;
6789
6790 /* verify hlen meets minimum size requirements */
6791 if (hlen < sizeof(struct iphdr))
6792 return hdr.network - data;
6793
Alexander Duyckf2fb4ab2012-11-13 01:13:38 +00006794 /* record next protocol if header is present */
Alexander Duyckb9555f62013-02-01 08:56:47 +00006795 if (!(hdr.ipv4->frag_off & htons(IP_OFFSET)))
Alexander Duyckf2fb4ab2012-11-13 01:13:38 +00006796 nexthdr = hdr.ipv4->protocol;
Joe Perches7c4d16f2014-03-13 05:19:14 +00006797 } else if (protocol == htons(ETH_P_IPV6)) {
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006798 if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr)))
6799 return max_len;
6800
6801 /* record next protocol */
6802 nexthdr = hdr.ipv6->nexthdr;
Alexander Duyckf2fb4ab2012-11-13 01:13:38 +00006803 hlen = sizeof(struct ipv6hdr);
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006804 } else {
6805 return hdr.network - data;
6806 }
6807
Alexander Duyckf2fb4ab2012-11-13 01:13:38 +00006808 /* relocate pointer to start of L4 header */
6809 hdr.network += hlen;
6810
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006811 /* finally sort out TCP */
6812 if (nexthdr == IPPROTO_TCP) {
6813 if ((hdr.network - data) > (max_len - sizeof(struct tcphdr)))
6814 return max_len;
6815
6816 /* access doff as a u8 to avoid unaligned access on ia64 */
6817 hlen = (hdr.network[12] & 0xF0) >> 2;
6818
6819 /* verify hlen meets minimum size requirements */
6820 if (hlen < sizeof(struct tcphdr))
6821 return hdr.network - data;
6822
6823 hdr.network += hlen;
6824 } else if (nexthdr == IPPROTO_UDP) {
6825 if ((hdr.network - data) > (max_len - sizeof(struct udphdr)))
6826 return max_len;
6827
6828 hdr.network += sizeof(struct udphdr);
6829 }
6830
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006831 /* If everything has gone correctly hdr.network should be the
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006832 * data section of the packet and will be the end of the header.
6833 * If not then it probably represents the end of the last recognized
6834 * header.
Alexander Duyck2d94d8a2009-07-23 18:10:06 +00006835 */
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006836 if ((hdr.network - data) < max_len)
6837 return hdr.network - data;
6838 else
6839 return max_len;
6840}
6841
6842/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006843 * igb_pull_tail - igb specific version of skb_pull_tail
6844 * @rx_ring: rx descriptor ring packet is being transacted on
6845 * @rx_desc: pointer to the EOP Rx descriptor
6846 * @skb: pointer to current skb being adjusted
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006847 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006848 * This function is an igb specific version of __pskb_pull_tail. The
6849 * main difference between this version and the original function is that
6850 * this function can make several assumptions about the state of things
6851 * that allow for significant optimizations versus the standard function.
6852 * As a result we can do things like drop a frag and maintain an accurate
6853 * truesize for the skb.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006854 */
6855static void igb_pull_tail(struct igb_ring *rx_ring,
6856 union e1000_adv_rx_desc *rx_desc,
6857 struct sk_buff *skb)
6858{
6859 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
6860 unsigned char *va;
6861 unsigned int pull_len;
6862
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006863 /* it is valid to use page_address instead of kmap since we are
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006864 * working with pages allocated out of the lomem pool per
6865 * alloc_page(GFP_ATOMIC)
6866 */
6867 va = skb_frag_address(frag);
6868
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006869 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
6870 /* retrieve timestamp from buffer */
6871 igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
6872
6873 /* update pointers to remove timestamp header */
6874 skb_frag_size_sub(frag, IGB_TS_HDR_LEN);
6875 frag->page_offset += IGB_TS_HDR_LEN;
6876 skb->data_len -= IGB_TS_HDR_LEN;
6877 skb->len -= IGB_TS_HDR_LEN;
6878
6879 /* move va to start of packet data */
6880 va += IGB_TS_HDR_LEN;
6881 }
6882
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006883 /* we need the header to contain the greater of either ETH_HLEN or
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006884 * 60 bytes if the skb->len is less than 60 for skb_pad.
6885 */
6886 pull_len = igb_get_headlen(va, IGB_RX_HDR_LEN);
6887
6888 /* align pull length to size of long to optimize memcpy performance */
6889 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
6890
6891 /* update all of the pointers */
6892 skb_frag_size_sub(frag, pull_len);
6893 frag->page_offset += pull_len;
6894 skb->data_len -= pull_len;
6895 skb->tail += pull_len;
6896}
6897
6898/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006899 * igb_cleanup_headers - Correct corrupted or empty headers
6900 * @rx_ring: rx descriptor ring packet is being transacted on
6901 * @rx_desc: pointer to the EOP Rx descriptor
6902 * @skb: pointer to current skb being fixed
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006903 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006904 * Address the case where we are pulling data in on pages only
6905 * and as such no data is present in the skb header.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006906 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006907 * In addition if skb is not at least 60 bytes we need to pad it so that
6908 * it is large enough to qualify as a valid Ethernet frame.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006909 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006910 * Returns true if an error was encountered and skb was freed.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006911 **/
6912static bool igb_cleanup_headers(struct igb_ring *rx_ring,
6913 union e1000_adv_rx_desc *rx_desc,
6914 struct sk_buff *skb)
6915{
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006916 if (unlikely((igb_test_staterr(rx_desc,
6917 E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) {
6918 struct net_device *netdev = rx_ring->netdev;
6919 if (!(netdev->features & NETIF_F_RXALL)) {
6920 dev_kfree_skb_any(skb);
6921 return true;
6922 }
6923 }
6924
6925 /* place header in linear portion of buffer */
6926 if (skb_is_nonlinear(skb))
6927 igb_pull_tail(rx_ring, rx_desc, skb);
6928
6929 /* if skb_pad returns an error the skb was freed */
6930 if (unlikely(skb->len < 60)) {
6931 int pad_len = 60 - skb->len;
6932
6933 if (skb_pad(skb, pad_len))
6934 return true;
6935 __skb_put(skb, pad_len);
6936 }
6937
6938 return false;
Alexander Duyck2d94d8a2009-07-23 18:10:06 +00006939}
6940
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006941/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006942 * igb_process_skb_fields - Populate skb header fields from Rx descriptor
6943 * @rx_ring: rx descriptor ring packet is being transacted on
6944 * @rx_desc: pointer to the EOP Rx descriptor
6945 * @skb: pointer to current skb being populated
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006946 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006947 * This function checks the ring, descriptor, and packet information in
6948 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
6949 * other fields within the skb.
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006950 **/
6951static void igb_process_skb_fields(struct igb_ring *rx_ring,
6952 union e1000_adv_rx_desc *rx_desc,
6953 struct sk_buff *skb)
6954{
6955 struct net_device *dev = rx_ring->netdev;
6956
6957 igb_rx_hash(rx_ring, rx_desc, skb);
6958
6959 igb_rx_checksum(rx_ring, rx_desc, skb);
6960
Jakub Kicinski5499a962014-04-02 10:33:33 +00006961 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) &&
6962 !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP))
6963 igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb);
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006964
Patrick McHardyf6469682013-04-19 02:04:27 +00006965 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006966 igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) {
6967 u16 vid;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00006968
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006969 if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) &&
6970 test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags))
6971 vid = be16_to_cpu(rx_desc->wb.upper.vlan);
6972 else
6973 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
6974
Patrick McHardy86a9bad2013-04-19 02:04:30 +00006975 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006976 }
6977
6978 skb_record_rx_queue(skb, rx_ring->queue_index);
6979
6980 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
6981}
6982
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006983static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget)
Auke Kok9d5c8242008-01-24 02:22:38 -08006984{
Alexander Duyck0ba82992011-08-26 07:45:47 +00006985 struct igb_ring *rx_ring = q_vector->rx.ring;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006986 struct sk_buff *skb = rx_ring->skb;
Auke Kok9d5c8242008-01-24 02:22:38 -08006987 unsigned int total_bytes = 0, total_packets = 0;
Alexander Duyck16eb8812011-08-26 07:43:54 +00006988 u16 cleaned_count = igb_desc_unused(rx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08006989
Eric W. Biederman57ba34c2014-03-14 18:00:06 -07006990 while (likely(total_packets < budget)) {
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006991 union e1000_adv_rx_desc *rx_desc;
Auke Kok9d5c8242008-01-24 02:22:38 -08006992
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006993 /* return some buffers to hardware, one at a time is too slow */
6994 if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
6995 igb_alloc_rx_buffers(rx_ring, cleaned_count);
6996 cleaned_count = 0;
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07006997 }
6998
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006999 rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean);
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07007000
Alexander Duyck2e334ee2012-09-25 00:31:07 +00007001 if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD))
7002 break;
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07007003
Alexander Duyck74e238e2013-02-02 05:07:11 +00007004 /* This memory barrier is needed to keep us from reading
7005 * any other fields out of the rx_desc until we know the
7006 * RXD_STAT_DD bit is set
7007 */
7008 rmb();
7009
Alexander Duyck2e334ee2012-09-25 00:31:07 +00007010 /* retrieve a buffer from the ring */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00007011 skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb);
Alexander Duyck16eb8812011-08-26 07:43:54 +00007012
Alexander Duyck2e334ee2012-09-25 00:31:07 +00007013 /* exit if we failed to retrieve a buffer */
7014 if (!skb)
7015 break;
7016
7017 cleaned_count++;
7018
7019 /* fetch next buffer in frame if non-eop */
7020 if (igb_is_non_eop(rx_ring, rx_desc))
7021 continue;
Alexander Duyck44390ca2011-08-26 07:43:38 +00007022
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007023 /* verify the packet layout is correct */
7024 if (igb_cleanup_headers(rx_ring, rx_desc, skb)) {
7025 skb = NULL;
7026 continue;
Auke Kok9d5c8242008-01-24 02:22:38 -08007027 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007028
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00007029 /* probably a little skewed due to removing CRC */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00007030 total_bytes += skb->len;
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00007031
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00007032 /* populate checksum, timestamp, VLAN, and protocol */
7033 igb_process_skb_fields(rx_ring, rx_desc, skb);
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00007034
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007035 napi_gro_receive(&q_vector->napi, skb);
Auke Kok9d5c8242008-01-24 02:22:38 -08007036
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007037 /* reset skb pointer */
7038 skb = NULL;
7039
Alexander Duyck2e334ee2012-09-25 00:31:07 +00007040 /* update budget accounting */
7041 total_packets++;
Eric W. Biederman57ba34c2014-03-14 18:00:06 -07007042 }
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07007043
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007044 /* place incomplete frames back on ring for completion */
7045 rx_ring->skb = skb;
7046
Eric Dumazet12dcd862010-10-15 17:27:10 +00007047 u64_stats_update_begin(&rx_ring->rx_syncp);
Auke Kok9d5c8242008-01-24 02:22:38 -08007048 rx_ring->rx_stats.packets += total_packets;
7049 rx_ring->rx_stats.bytes += total_bytes;
Eric Dumazet12dcd862010-10-15 17:27:10 +00007050 u64_stats_update_end(&rx_ring->rx_syncp);
Alexander Duyck0ba82992011-08-26 07:45:47 +00007051 q_vector->rx.total_packets += total_packets;
7052 q_vector->rx.total_bytes += total_bytes;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007053
7054 if (cleaned_count)
Alexander Duyckcd392f52011-08-26 07:43:59 +00007055 igb_alloc_rx_buffers(rx_ring, cleaned_count);
Alexander Duyckc023cd82011-08-26 07:43:43 +00007056
Alexander Duyck2e334ee2012-09-25 00:31:07 +00007057 return (total_packets < budget);
Auke Kok9d5c8242008-01-24 02:22:38 -08007058}
7059
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007060static bool igb_alloc_mapped_page(struct igb_ring *rx_ring,
7061 struct igb_rx_buffer *bi)
Alexander Duyckc023cd82011-08-26 07:43:43 +00007062{
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007063 struct page *page = bi->page;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007064 dma_addr_t dma;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007065
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007066 /* since we are recycling buffers we should seldom need to alloc */
7067 if (likely(page))
Alexander Duyckc023cd82011-08-26 07:43:43 +00007068 return true;
7069
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007070 /* alloc new page for storage */
7071 page = __skb_alloc_page(GFP_ATOMIC | __GFP_COLD, NULL);
7072 if (unlikely(!page)) {
7073 rx_ring->rx_stats.alloc_failed++;
7074 return false;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007075 }
7076
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007077 /* map page for use */
7078 dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
Alexander Duyckc023cd82011-08-26 07:43:43 +00007079
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007080 /* if mapping failed free memory back to system since
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007081 * there isn't much point in holding memory we can't use
7082 */
Alexander Duyckc023cd82011-08-26 07:43:43 +00007083 if (dma_mapping_error(rx_ring->dev, dma)) {
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007084 __free_page(page);
7085
Alexander Duyckc023cd82011-08-26 07:43:43 +00007086 rx_ring->rx_stats.alloc_failed++;
7087 return false;
7088 }
7089
7090 bi->dma = dma;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007091 bi->page = page;
7092 bi->page_offset = 0;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007093
Alexander Duyckc023cd82011-08-26 07:43:43 +00007094 return true;
7095}
7096
Auke Kok9d5c8242008-01-24 02:22:38 -08007097/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007098 * igb_alloc_rx_buffers - Replace used receive buffers; packet split
7099 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08007100 **/
Alexander Duyckcd392f52011-08-26 07:43:59 +00007101void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count)
Auke Kok9d5c8242008-01-24 02:22:38 -08007102{
Auke Kok9d5c8242008-01-24 02:22:38 -08007103 union e1000_adv_rx_desc *rx_desc;
Alexander Duyck06034642011-08-26 07:44:22 +00007104 struct igb_rx_buffer *bi;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007105 u16 i = rx_ring->next_to_use;
Auke Kok9d5c8242008-01-24 02:22:38 -08007106
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007107 /* nothing to do */
7108 if (!cleaned_count)
7109 return;
7110
Alexander Duyck601369062011-08-26 07:44:05 +00007111 rx_desc = IGB_RX_DESC(rx_ring, i);
Alexander Duyck06034642011-08-26 07:44:22 +00007112 bi = &rx_ring->rx_buffer_info[i];
Alexander Duyckc023cd82011-08-26 07:43:43 +00007113 i -= rx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08007114
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007115 do {
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007116 if (!igb_alloc_mapped_page(rx_ring, bi))
Alexander Duyckc023cd82011-08-26 07:43:43 +00007117 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08007118
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007119 /* Refresh the desc even if buffer_addrs didn't change
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007120 * because each write-back erases this info.
7121 */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00007122 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
Auke Kok9d5c8242008-01-24 02:22:38 -08007123
Alexander Duyckc023cd82011-08-26 07:43:43 +00007124 rx_desc++;
7125 bi++;
Auke Kok9d5c8242008-01-24 02:22:38 -08007126 i++;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007127 if (unlikely(!i)) {
Alexander Duyck601369062011-08-26 07:44:05 +00007128 rx_desc = IGB_RX_DESC(rx_ring, 0);
Alexander Duyck06034642011-08-26 07:44:22 +00007129 bi = rx_ring->rx_buffer_info;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007130 i -= rx_ring->count;
7131 }
7132
7133 /* clear the hdr_addr for the next_to_use descriptor */
7134 rx_desc->read.hdr_addr = 0;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007135
7136 cleaned_count--;
7137 } while (cleaned_count);
Auke Kok9d5c8242008-01-24 02:22:38 -08007138
Alexander Duyckc023cd82011-08-26 07:43:43 +00007139 i += rx_ring->count;
7140
Auke Kok9d5c8242008-01-24 02:22:38 -08007141 if (rx_ring->next_to_use != i) {
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007142 /* record the next descriptor to use */
Auke Kok9d5c8242008-01-24 02:22:38 -08007143 rx_ring->next_to_use = i;
Auke Kok9d5c8242008-01-24 02:22:38 -08007144
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007145 /* update next to alloc since we have filled the ring */
7146 rx_ring->next_to_alloc = i;
7147
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007148 /* Force memory writes to complete before letting h/w
Auke Kok9d5c8242008-01-24 02:22:38 -08007149 * know there are new descriptors to fetch. (Only
7150 * applicable for weak-ordered memory model archs,
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007151 * such as IA-64).
7152 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007153 wmb();
Alexander Duyckfce99e32009-10-27 15:51:27 +00007154 writel(i, rx_ring->tail);
Auke Kok9d5c8242008-01-24 02:22:38 -08007155 }
7156}
7157
7158/**
7159 * igb_mii_ioctl -
7160 * @netdev:
7161 * @ifreq:
7162 * @cmd:
7163 **/
7164static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
7165{
7166 struct igb_adapter *adapter = netdev_priv(netdev);
7167 struct mii_ioctl_data *data = if_mii(ifr);
7168
7169 if (adapter->hw.phy.media_type != e1000_media_type_copper)
7170 return -EOPNOTSUPP;
7171
7172 switch (cmd) {
7173 case SIOCGMIIPHY:
7174 data->phy_id = adapter->hw.phy.addr;
7175 break;
7176 case SIOCGMIIREG:
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08007177 if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00007178 &data->val_out))
Auke Kok9d5c8242008-01-24 02:22:38 -08007179 return -EIO;
7180 break;
7181 case SIOCSMIIREG:
7182 default:
7183 return -EOPNOTSUPP;
7184 }
7185 return 0;
7186}
7187
7188/**
7189 * igb_ioctl -
7190 * @netdev:
7191 * @ifreq:
7192 * @cmd:
7193 **/
7194static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
7195{
7196 switch (cmd) {
7197 case SIOCGMIIPHY:
7198 case SIOCGMIIREG:
7199 case SIOCSMIIREG:
7200 return igb_mii_ioctl(netdev, ifr, cmd);
Jacob Keller6ab5f7b2014-01-11 07:20:06 +00007201 case SIOCGHWTSTAMP:
7202 return igb_ptp_get_ts_config(netdev, ifr);
Patrick Ohlyc6cb0902009-02-12 05:03:42 +00007203 case SIOCSHWTSTAMP:
Jacob Keller6ab5f7b2014-01-11 07:20:06 +00007204 return igb_ptp_set_ts_config(netdev, ifr);
Auke Kok9d5c8242008-01-24 02:22:38 -08007205 default:
7206 return -EOPNOTSUPP;
7207 }
7208}
7209
Alexander Duyck009bc062009-07-23 18:08:35 +00007210s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
7211{
7212 struct igb_adapter *adapter = hw->back;
Alexander Duyck009bc062009-07-23 18:08:35 +00007213
Jiang Liu23d028c2012-08-20 13:32:20 -06007214 if (pcie_capability_read_word(adapter->pdev, reg, value))
Alexander Duyck009bc062009-07-23 18:08:35 +00007215 return -E1000_ERR_CONFIG;
7216
Alexander Duyck009bc062009-07-23 18:08:35 +00007217 return 0;
7218}
7219
7220s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
7221{
7222 struct igb_adapter *adapter = hw->back;
Alexander Duyck009bc062009-07-23 18:08:35 +00007223
Jiang Liu23d028c2012-08-20 13:32:20 -06007224 if (pcie_capability_write_word(adapter->pdev, reg, *value))
Alexander Duyck009bc062009-07-23 18:08:35 +00007225 return -E1000_ERR_CONFIG;
7226
Alexander Duyck009bc062009-07-23 18:08:35 +00007227 return 0;
7228}
7229
Michał Mirosławc8f44af2011-11-15 15:29:55 +00007230static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features)
Auke Kok9d5c8242008-01-24 02:22:38 -08007231{
7232 struct igb_adapter *adapter = netdev_priv(netdev);
7233 struct e1000_hw *hw = &adapter->hw;
7234 u32 ctrl, rctl;
Patrick McHardyf6469682013-04-19 02:04:27 +00007235 bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX);
Auke Kok9d5c8242008-01-24 02:22:38 -08007236
Alexander Duyck5faf0302011-08-26 07:46:08 +00007237 if (enable) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007238 /* enable VLAN tag insert/strip */
7239 ctrl = rd32(E1000_CTRL);
7240 ctrl |= E1000_CTRL_VME;
7241 wr32(E1000_CTRL, ctrl);
7242
Alexander Duyck51466232009-10-27 23:47:35 +00007243 /* Disable CFI check */
Auke Kok9d5c8242008-01-24 02:22:38 -08007244 rctl = rd32(E1000_RCTL);
Auke Kok9d5c8242008-01-24 02:22:38 -08007245 rctl &= ~E1000_RCTL_CFIEN;
7246 wr32(E1000_RCTL, rctl);
Auke Kok9d5c8242008-01-24 02:22:38 -08007247 } else {
7248 /* disable VLAN tag insert/strip */
7249 ctrl = rd32(E1000_CTRL);
7250 ctrl &= ~E1000_CTRL_VME;
7251 wr32(E1000_CTRL, ctrl);
Auke Kok9d5c8242008-01-24 02:22:38 -08007252 }
7253
Alexander Duycke1739522009-02-19 20:39:44 -08007254 igb_rlpml_set(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007255}
7256
Patrick McHardy80d5c362013-04-19 02:04:28 +00007257static int igb_vlan_rx_add_vid(struct net_device *netdev,
7258 __be16 proto, u16 vid)
Auke Kok9d5c8242008-01-24 02:22:38 -08007259{
7260 struct igb_adapter *adapter = netdev_priv(netdev);
7261 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007262 int pf_id = adapter->vfs_allocated_count;
Auke Kok9d5c8242008-01-24 02:22:38 -08007263
Alexander Duyck51466232009-10-27 23:47:35 +00007264 /* attempt to add filter to vlvf array */
7265 igb_vlvf_set(adapter, vid, true, pf_id);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007266
Alexander Duyck51466232009-10-27 23:47:35 +00007267 /* add the filter since PF can receive vlans w/o entry in vlvf */
7268 igb_vfta_set(hw, vid, true);
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007269
7270 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05007271
7272 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08007273}
7274
Patrick McHardy80d5c362013-04-19 02:04:28 +00007275static int igb_vlan_rx_kill_vid(struct net_device *netdev,
7276 __be16 proto, u16 vid)
Auke Kok9d5c8242008-01-24 02:22:38 -08007277{
7278 struct igb_adapter *adapter = netdev_priv(netdev);
7279 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007280 int pf_id = adapter->vfs_allocated_count;
Alexander Duyck51466232009-10-27 23:47:35 +00007281 s32 err;
Auke Kok9d5c8242008-01-24 02:22:38 -08007282
Alexander Duyck51466232009-10-27 23:47:35 +00007283 /* remove vlan from VLVF table array */
7284 err = igb_vlvf_set(adapter, vid, false, pf_id);
Auke Kok9d5c8242008-01-24 02:22:38 -08007285
Alexander Duyck51466232009-10-27 23:47:35 +00007286 /* if vid was not present in VLVF just remove it from table */
7287 if (err)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007288 igb_vfta_set(hw, vid, false);
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007289
7290 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05007291
7292 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08007293}
7294
7295static void igb_restore_vlan(struct igb_adapter *adapter)
7296{
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007297 u16 vid;
Auke Kok9d5c8242008-01-24 02:22:38 -08007298
Alexander Duyck5faf0302011-08-26 07:46:08 +00007299 igb_vlan_mode(adapter->netdev, adapter->netdev->features);
7300
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007301 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Patrick McHardy80d5c362013-04-19 02:04:28 +00007302 igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
Auke Kok9d5c8242008-01-24 02:22:38 -08007303}
7304
David Decotigny14ad2512011-04-27 18:32:43 +00007305int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx)
Auke Kok9d5c8242008-01-24 02:22:38 -08007306{
Alexander Duyck090b1792009-10-27 23:51:55 +00007307 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08007308 struct e1000_mac_info *mac = &adapter->hw.mac;
7309
7310 mac->autoneg = 0;
7311
David Decotigny14ad2512011-04-27 18:32:43 +00007312 /* Make sure dplx is at most 1 bit and lsb of speed is not set
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007313 * for the switch() below to work
7314 */
David Decotigny14ad2512011-04-27 18:32:43 +00007315 if ((spd & 1) || (dplx & ~1))
7316 goto err_inval;
7317
Akeem G. Abodunrinf502ef72013-04-05 16:49:06 +00007318 /* Fiber NIC's only allow 1000 gbps Full duplex
7319 * and 100Mbps Full duplex for 100baseFx sfp
7320 */
7321 if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) {
7322 switch (spd + dplx) {
7323 case SPEED_10 + DUPLEX_HALF:
7324 case SPEED_10 + DUPLEX_FULL:
7325 case SPEED_100 + DUPLEX_HALF:
7326 goto err_inval;
7327 default:
7328 break;
7329 }
7330 }
Carolyn Wybornycd2638a2010-10-12 22:27:02 +00007331
David Decotigny14ad2512011-04-27 18:32:43 +00007332 switch (spd + dplx) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007333 case SPEED_10 + DUPLEX_HALF:
7334 mac->forced_speed_duplex = ADVERTISE_10_HALF;
7335 break;
7336 case SPEED_10 + DUPLEX_FULL:
7337 mac->forced_speed_duplex = ADVERTISE_10_FULL;
7338 break;
7339 case SPEED_100 + DUPLEX_HALF:
7340 mac->forced_speed_duplex = ADVERTISE_100_HALF;
7341 break;
7342 case SPEED_100 + DUPLEX_FULL:
7343 mac->forced_speed_duplex = ADVERTISE_100_FULL;
7344 break;
7345 case SPEED_1000 + DUPLEX_FULL:
7346 mac->autoneg = 1;
7347 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
7348 break;
7349 case SPEED_1000 + DUPLEX_HALF: /* not supported */
7350 default:
David Decotigny14ad2512011-04-27 18:32:43 +00007351 goto err_inval;
Auke Kok9d5c8242008-01-24 02:22:38 -08007352 }
Jesse Brandeburg8376dad2012-07-26 02:31:19 +00007353
7354 /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
7355 adapter->hw.phy.mdix = AUTO_ALL_MODES;
7356
Auke Kok9d5c8242008-01-24 02:22:38 -08007357 return 0;
David Decotigny14ad2512011-04-27 18:32:43 +00007358
7359err_inval:
7360 dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
7361 return -EINVAL;
Auke Kok9d5c8242008-01-24 02:22:38 -08007362}
7363
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007364static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake,
7365 bool runtime)
Auke Kok9d5c8242008-01-24 02:22:38 -08007366{
7367 struct net_device *netdev = pci_get_drvdata(pdev);
7368 struct igb_adapter *adapter = netdev_priv(netdev);
7369 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck2d064c02008-07-08 15:10:12 -07007370 u32 ctrl, rctl, status;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007371 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
Auke Kok9d5c8242008-01-24 02:22:38 -08007372#ifdef CONFIG_PM
7373 int retval = 0;
7374#endif
7375
7376 netif_device_detach(netdev);
7377
Alexander Duycka88f10e2008-07-08 15:13:38 -07007378 if (netif_running(netdev))
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007379 __igb_close(netdev, true);
Alexander Duycka88f10e2008-07-08 15:13:38 -07007380
Alexander Duyck047e0032009-10-27 15:49:27 +00007381 igb_clear_interrupt_scheme(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007382
7383#ifdef CONFIG_PM
7384 retval = pci_save_state(pdev);
7385 if (retval)
7386 return retval;
7387#endif
7388
7389 status = rd32(E1000_STATUS);
7390 if (status & E1000_STATUS_LU)
7391 wufc &= ~E1000_WUFC_LNKC;
7392
7393 if (wufc) {
7394 igb_setup_rctl(adapter);
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007395 igb_set_rx_mode(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007396
7397 /* turn on all-multi mode if wake on multicast is enabled */
7398 if (wufc & E1000_WUFC_MC) {
7399 rctl = rd32(E1000_RCTL);
7400 rctl |= E1000_RCTL_MPE;
7401 wr32(E1000_RCTL, rctl);
7402 }
7403
7404 ctrl = rd32(E1000_CTRL);
7405 /* advertise wake from D3Cold */
7406 #define E1000_CTRL_ADVD3WUC 0x00100000
7407 /* phy power management enable */
7408 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
7409 ctrl |= E1000_CTRL_ADVD3WUC;
7410 wr32(E1000_CTRL, ctrl);
7411
Auke Kok9d5c8242008-01-24 02:22:38 -08007412 /* Allow time for pending master requests to run */
Alexander Duyck330a6d62009-10-27 23:51:35 +00007413 igb_disable_pcie_master(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08007414
7415 wr32(E1000_WUC, E1000_WUC_PME_EN);
7416 wr32(E1000_WUFC, wufc);
Auke Kok9d5c8242008-01-24 02:22:38 -08007417 } else {
7418 wr32(E1000_WUC, 0);
7419 wr32(E1000_WUFC, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08007420 }
7421
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007422 *enable_wake = wufc || adapter->en_mng_pt;
7423 if (!*enable_wake)
Nick Nunley88a268c2010-02-17 01:01:59 +00007424 igb_power_down_link(adapter);
7425 else
7426 igb_power_up_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007427
7428 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007429 * would have already happened in close and is redundant.
7430 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007431 igb_release_hw_control(adapter);
7432
7433 pci_disable_device(pdev);
7434
Auke Kok9d5c8242008-01-24 02:22:38 -08007435 return 0;
7436}
7437
7438#ifdef CONFIG_PM
Emil Tantilovd9dd9662012-01-28 08:10:35 +00007439#ifdef CONFIG_PM_SLEEP
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007440static int igb_suspend(struct device *dev)
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007441{
7442 int retval;
7443 bool wake;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007444 struct pci_dev *pdev = to_pci_dev(dev);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007445
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007446 retval = __igb_shutdown(pdev, &wake, 0);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007447 if (retval)
7448 return retval;
7449
7450 if (wake) {
7451 pci_prepare_to_sleep(pdev);
7452 } else {
7453 pci_wake_from_d3(pdev, false);
7454 pci_set_power_state(pdev, PCI_D3hot);
7455 }
7456
7457 return 0;
7458}
Emil Tantilovd9dd9662012-01-28 08:10:35 +00007459#endif /* CONFIG_PM_SLEEP */
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007460
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007461static int igb_resume(struct device *dev)
Auke Kok9d5c8242008-01-24 02:22:38 -08007462{
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007463 struct pci_dev *pdev = to_pci_dev(dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007464 struct net_device *netdev = pci_get_drvdata(pdev);
7465 struct igb_adapter *adapter = netdev_priv(netdev);
7466 struct e1000_hw *hw = &adapter->hw;
7467 u32 err;
7468
7469 pci_set_power_state(pdev, PCI_D0);
7470 pci_restore_state(pdev);
Nick Nunleyb94f2d72010-02-17 01:02:19 +00007471 pci_save_state(pdev);
Taku Izumi42bfd33a2008-06-20 12:10:30 +09007472
Alexander Duyckaed5dec2009-02-06 23:16:04 +00007473 err = pci_enable_device_mem(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007474 if (err) {
7475 dev_err(&pdev->dev,
7476 "igb: Cannot enable PCI device from suspend\n");
7477 return err;
7478 }
7479 pci_set_master(pdev);
7480
7481 pci_enable_wake(pdev, PCI_D3hot, 0);
7482 pci_enable_wake(pdev, PCI_D3cold, 0);
7483
Stefan Assmann53c7d062012-12-04 06:00:12 +00007484 if (igb_init_interrupt_scheme(adapter, true)) {
Alexander Duycka88f10e2008-07-08 15:13:38 -07007485 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
7486 return -ENOMEM;
Auke Kok9d5c8242008-01-24 02:22:38 -08007487 }
7488
Auke Kok9d5c8242008-01-24 02:22:38 -08007489 igb_reset(adapter);
Alexander Duycka8564f02009-02-06 23:21:10 +00007490
7491 /* let the f/w know that the h/w is now under the control of the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007492 * driver.
7493 */
Alexander Duycka8564f02009-02-06 23:21:10 +00007494 igb_get_hw_control(adapter);
7495
Auke Kok9d5c8242008-01-24 02:22:38 -08007496 wr32(E1000_WUS, ~0);
7497
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007498 if (netdev->flags & IFF_UP) {
Alexander Duyck0c2cc022012-09-25 00:31:22 +00007499 rtnl_lock();
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007500 err = __igb_open(netdev, true);
Alexander Duyck0c2cc022012-09-25 00:31:22 +00007501 rtnl_unlock();
Alexander Duycka88f10e2008-07-08 15:13:38 -07007502 if (err)
7503 return err;
7504 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007505
7506 netif_device_attach(netdev);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007507 return 0;
7508}
7509
7510#ifdef CONFIG_PM_RUNTIME
7511static int igb_runtime_idle(struct device *dev)
7512{
7513 struct pci_dev *pdev = to_pci_dev(dev);
7514 struct net_device *netdev = pci_get_drvdata(pdev);
7515 struct igb_adapter *adapter = netdev_priv(netdev);
7516
7517 if (!igb_has_link(adapter))
7518 pm_schedule_suspend(dev, MSEC_PER_SEC * 5);
7519
7520 return -EBUSY;
7521}
7522
7523static int igb_runtime_suspend(struct device *dev)
7524{
7525 struct pci_dev *pdev = to_pci_dev(dev);
7526 int retval;
7527 bool wake;
7528
7529 retval = __igb_shutdown(pdev, &wake, 1);
7530 if (retval)
7531 return retval;
7532
7533 if (wake) {
7534 pci_prepare_to_sleep(pdev);
7535 } else {
7536 pci_wake_from_d3(pdev, false);
7537 pci_set_power_state(pdev, PCI_D3hot);
7538 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007539
Auke Kok9d5c8242008-01-24 02:22:38 -08007540 return 0;
7541}
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007542
7543static int igb_runtime_resume(struct device *dev)
7544{
7545 return igb_resume(dev);
7546}
7547#endif /* CONFIG_PM_RUNTIME */
Auke Kok9d5c8242008-01-24 02:22:38 -08007548#endif
7549
7550static void igb_shutdown(struct pci_dev *pdev)
7551{
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007552 bool wake;
7553
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007554 __igb_shutdown(pdev, &wake, 0);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007555
7556 if (system_state == SYSTEM_POWER_OFF) {
7557 pci_wake_from_d3(pdev, wake);
7558 pci_set_power_state(pdev, PCI_D3hot);
7559 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007560}
7561
Greg Rosefa44f2f2013-01-17 01:03:06 -08007562#ifdef CONFIG_PCI_IOV
7563static int igb_sriov_reinit(struct pci_dev *dev)
7564{
7565 struct net_device *netdev = pci_get_drvdata(dev);
7566 struct igb_adapter *adapter = netdev_priv(netdev);
7567 struct pci_dev *pdev = adapter->pdev;
7568
7569 rtnl_lock();
7570
7571 if (netif_running(netdev))
7572 igb_close(netdev);
7573
7574 igb_clear_interrupt_scheme(adapter);
7575
7576 igb_init_queue_configuration(adapter);
7577
7578 if (igb_init_interrupt_scheme(adapter, true)) {
7579 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
7580 return -ENOMEM;
7581 }
7582
7583 if (netif_running(netdev))
7584 igb_open(netdev);
7585
7586 rtnl_unlock();
7587
7588 return 0;
7589}
7590
7591static int igb_pci_disable_sriov(struct pci_dev *dev)
7592{
7593 int err = igb_disable_sriov(dev);
7594
7595 if (!err)
7596 err = igb_sriov_reinit(dev);
7597
7598 return err;
7599}
7600
7601static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs)
7602{
7603 int err = igb_enable_sriov(dev, num_vfs);
7604
7605 if (err)
7606 goto out;
7607
7608 err = igb_sriov_reinit(dev);
7609 if (!err)
7610 return num_vfs;
7611
7612out:
7613 return err;
7614}
7615
7616#endif
7617static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
7618{
7619#ifdef CONFIG_PCI_IOV
7620 if (num_vfs == 0)
7621 return igb_pci_disable_sriov(dev);
7622 else
7623 return igb_pci_enable_sriov(dev, num_vfs);
7624#endif
7625 return 0;
7626}
7627
Auke Kok9d5c8242008-01-24 02:22:38 -08007628#ifdef CONFIG_NET_POLL_CONTROLLER
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007629/* Polling 'interrupt' - used by things like netconsole to send skbs
Auke Kok9d5c8242008-01-24 02:22:38 -08007630 * without having to re-enable interrupts. It's not called while
7631 * the interrupt routine is executing.
7632 */
7633static void igb_netpoll(struct net_device *netdev)
7634{
7635 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00007636 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007637 struct igb_q_vector *q_vector;
Auke Kok9d5c8242008-01-24 02:22:38 -08007638 int i;
Auke Kok9d5c8242008-01-24 02:22:38 -08007639
Alexander Duyck047e0032009-10-27 15:49:27 +00007640 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007641 q_vector = adapter->q_vector[i];
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00007642 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007643 wr32(E1000_EIMC, q_vector->eims_value);
7644 else
7645 igb_irq_disable(adapter);
Alexander Duyck047e0032009-10-27 15:49:27 +00007646 napi_schedule(&q_vector->napi);
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00007647 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007648}
7649#endif /* CONFIG_NET_POLL_CONTROLLER */
7650
7651/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007652 * igb_io_error_detected - called when PCI error is detected
7653 * @pdev: Pointer to PCI device
7654 * @state: The current pci connection state
Auke Kok9d5c8242008-01-24 02:22:38 -08007655 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007656 * This function is called after a PCI bus error affecting
7657 * this device has been detected.
7658 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08007659static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
7660 pci_channel_state_t state)
7661{
7662 struct net_device *netdev = pci_get_drvdata(pdev);
7663 struct igb_adapter *adapter = netdev_priv(netdev);
7664
7665 netif_device_detach(netdev);
7666
Alexander Duyck59ed6ee2009-06-30 12:46:34 +00007667 if (state == pci_channel_io_perm_failure)
7668 return PCI_ERS_RESULT_DISCONNECT;
7669
Auke Kok9d5c8242008-01-24 02:22:38 -08007670 if (netif_running(netdev))
7671 igb_down(adapter);
7672 pci_disable_device(pdev);
7673
7674 /* Request a slot slot reset. */
7675 return PCI_ERS_RESULT_NEED_RESET;
7676}
7677
7678/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007679 * igb_io_slot_reset - called after the pci bus has been reset.
7680 * @pdev: Pointer to PCI device
Auke Kok9d5c8242008-01-24 02:22:38 -08007681 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007682 * Restart the card from scratch, as if from a cold-boot. Implementation
7683 * resembles the first-half of the igb_resume routine.
7684 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08007685static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
7686{
7687 struct net_device *netdev = pci_get_drvdata(pdev);
7688 struct igb_adapter *adapter = netdev_priv(netdev);
7689 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck40a914f2008-11-27 00:24:37 -08007690 pci_ers_result_t result;
Taku Izumi42bfd33a2008-06-20 12:10:30 +09007691 int err;
Auke Kok9d5c8242008-01-24 02:22:38 -08007692
Alexander Duyckaed5dec2009-02-06 23:16:04 +00007693 if (pci_enable_device_mem(pdev)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007694 dev_err(&pdev->dev,
7695 "Cannot re-enable PCI device after reset.\n");
Alexander Duyck40a914f2008-11-27 00:24:37 -08007696 result = PCI_ERS_RESULT_DISCONNECT;
7697 } else {
7698 pci_set_master(pdev);
7699 pci_restore_state(pdev);
Nick Nunleyb94f2d72010-02-17 01:02:19 +00007700 pci_save_state(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08007701
7702 pci_enable_wake(pdev, PCI_D3hot, 0);
7703 pci_enable_wake(pdev, PCI_D3cold, 0);
7704
7705 igb_reset(adapter);
7706 wr32(E1000_WUS, ~0);
7707 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9d5c8242008-01-24 02:22:38 -08007708 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007709
Jeff Kirsherea943d42008-12-11 20:34:19 -08007710 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7711 if (err) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007712 dev_err(&pdev->dev,
7713 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7714 err);
Jeff Kirsherea943d42008-12-11 20:34:19 -08007715 /* non-fatal, continue */
7716 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007717
Alexander Duyck40a914f2008-11-27 00:24:37 -08007718 return result;
Auke Kok9d5c8242008-01-24 02:22:38 -08007719}
7720
7721/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007722 * igb_io_resume - called when traffic can start flowing again.
7723 * @pdev: Pointer to PCI device
Auke Kok9d5c8242008-01-24 02:22:38 -08007724 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007725 * This callback is called when the error recovery driver tells us that
7726 * its OK to resume normal operation. Implementation resembles the
7727 * second-half of the igb_resume routine.
Auke Kok9d5c8242008-01-24 02:22:38 -08007728 */
7729static void igb_io_resume(struct pci_dev *pdev)
7730{
7731 struct net_device *netdev = pci_get_drvdata(pdev);
7732 struct igb_adapter *adapter = netdev_priv(netdev);
7733
Auke Kok9d5c8242008-01-24 02:22:38 -08007734 if (netif_running(netdev)) {
7735 if (igb_up(adapter)) {
7736 dev_err(&pdev->dev, "igb_up failed after reset\n");
7737 return;
7738 }
7739 }
7740
7741 netif_device_attach(netdev);
7742
7743 /* let the f/w know that the h/w is now under the control of the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007744 * driver.
7745 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007746 igb_get_hw_control(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007747}
7748
Alexander Duyck26ad9172009-10-05 06:32:49 +00007749static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007750 u8 qsel)
Alexander Duyck26ad9172009-10-05 06:32:49 +00007751{
7752 u32 rar_low, rar_high;
7753 struct e1000_hw *hw = &adapter->hw;
7754
7755 /* HW expects these in little endian so we reverse the byte order
7756 * from network order (big endian) to little endian
7757 */
7758 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007759 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
Alexander Duyck26ad9172009-10-05 06:32:49 +00007760 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
7761
7762 /* Indicate to hardware the Address is Valid. */
7763 rar_high |= E1000_RAH_AV;
7764
7765 if (hw->mac.type == e1000_82575)
7766 rar_high |= E1000_RAH_POOL_1 * qsel;
7767 else
7768 rar_high |= E1000_RAH_POOL_1 << qsel;
7769
7770 wr32(E1000_RAL(index), rar_low);
7771 wrfl();
7772 wr32(E1000_RAH(index), rar_high);
7773 wrfl();
7774}
7775
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007776static int igb_set_vf_mac(struct igb_adapter *adapter,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007777 int vf, unsigned char *mac_addr)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007778{
7779 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007780 /* VF MAC addresses start at end of receive addresses and moves
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007781 * towards the first, as a result a collision should not be possible
7782 */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007783 int rar_entry = hw->mac.rar_entry_count - (vf + 1);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007784
Alexander Duyck37680112009-02-19 20:40:30 -08007785 memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007786
Alexander Duyck26ad9172009-10-05 06:32:49 +00007787 igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007788
7789 return 0;
7790}
7791
Williams, Mitch A8151d292010-02-10 01:44:24 +00007792static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
7793{
7794 struct igb_adapter *adapter = netdev_priv(netdev);
7795 if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count))
7796 return -EINVAL;
7797 adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC;
7798 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007799 dev_info(&adapter->pdev->dev,
7800 "Reload the VF driver to make this change effective.");
Williams, Mitch A8151d292010-02-10 01:44:24 +00007801 if (test_bit(__IGB_DOWN, &adapter->state)) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007802 dev_warn(&adapter->pdev->dev,
7803 "The VF MAC address has been set, but the PF device is not up.\n");
7804 dev_warn(&adapter->pdev->dev,
7805 "Bring the PF device up before attempting to use the VF device.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00007806 }
7807 return igb_set_vf_mac(adapter, vf, mac);
7808}
7809
Lior Levy17dc5662011-02-08 02:28:46 +00007810static int igb_link_mbps(int internal_link_speed)
7811{
7812 switch (internal_link_speed) {
7813 case SPEED_100:
7814 return 100;
7815 case SPEED_1000:
7816 return 1000;
7817 default:
7818 return 0;
7819 }
7820}
7821
7822static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate,
7823 int link_speed)
7824{
7825 int rf_dec, rf_int;
7826 u32 bcnrc_val;
7827
7828 if (tx_rate != 0) {
7829 /* Calculate the rate factor values to set */
7830 rf_int = link_speed / tx_rate;
7831 rf_dec = (link_speed - (rf_int * tx_rate));
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007832 rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) /
7833 tx_rate;
Lior Levy17dc5662011-02-08 02:28:46 +00007834
7835 bcnrc_val = E1000_RTTBCNRC_RS_ENA;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007836 bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) &
7837 E1000_RTTBCNRC_RF_INT_MASK);
Lior Levy17dc5662011-02-08 02:28:46 +00007838 bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK);
7839 } else {
7840 bcnrc_val = 0;
7841 }
7842
7843 wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007844 /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
Lior Levyf00b0da2011-06-04 06:05:03 +00007845 * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported.
7846 */
7847 wr32(E1000_RTTBCNRM, 0x14);
Lior Levy17dc5662011-02-08 02:28:46 +00007848 wr32(E1000_RTTBCNRC, bcnrc_val);
7849}
7850
7851static void igb_check_vf_rate_limit(struct igb_adapter *adapter)
7852{
7853 int actual_link_speed, i;
7854 bool reset_rate = false;
7855
7856 /* VF TX rate limit was not set or not supported */
7857 if ((adapter->vf_rate_link_speed == 0) ||
7858 (adapter->hw.mac.type != e1000_82576))
7859 return;
7860
7861 actual_link_speed = igb_link_mbps(adapter->link_speed);
7862 if (actual_link_speed != adapter->vf_rate_link_speed) {
7863 reset_rate = true;
7864 adapter->vf_rate_link_speed = 0;
7865 dev_info(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007866 "Link speed has been changed. VF Transmit rate is disabled\n");
Lior Levy17dc5662011-02-08 02:28:46 +00007867 }
7868
7869 for (i = 0; i < adapter->vfs_allocated_count; i++) {
7870 if (reset_rate)
7871 adapter->vf_data[i].tx_rate = 0;
7872
7873 igb_set_vf_rate_limit(&adapter->hw, i,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007874 adapter->vf_data[i].tx_rate,
7875 actual_link_speed);
Lior Levy17dc5662011-02-08 02:28:46 +00007876 }
7877}
7878
Williams, Mitch A8151d292010-02-10 01:44:24 +00007879static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
7880{
Lior Levy17dc5662011-02-08 02:28:46 +00007881 struct igb_adapter *adapter = netdev_priv(netdev);
7882 struct e1000_hw *hw = &adapter->hw;
7883 int actual_link_speed;
7884
7885 if (hw->mac.type != e1000_82576)
7886 return -EOPNOTSUPP;
7887
7888 actual_link_speed = igb_link_mbps(adapter->link_speed);
7889 if ((vf >= adapter->vfs_allocated_count) ||
7890 (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) ||
7891 (tx_rate < 0) || (tx_rate > actual_link_speed))
7892 return -EINVAL;
7893
7894 adapter->vf_rate_link_speed = actual_link_speed;
7895 adapter->vf_data[vf].tx_rate = (u16)tx_rate;
7896 igb_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed);
7897
7898 return 0;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007899}
7900
Lior Levy70ea4782013-03-03 20:27:48 +00007901static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
7902 bool setting)
7903{
7904 struct igb_adapter *adapter = netdev_priv(netdev);
7905 struct e1000_hw *hw = &adapter->hw;
7906 u32 reg_val, reg_offset;
7907
7908 if (!adapter->vfs_allocated_count)
7909 return -EOPNOTSUPP;
7910
7911 if (vf >= adapter->vfs_allocated_count)
7912 return -EINVAL;
7913
7914 reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC;
7915 reg_val = rd32(reg_offset);
7916 if (setting)
7917 reg_val |= ((1 << vf) |
7918 (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
7919 else
7920 reg_val &= ~((1 << vf) |
7921 (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
7922 wr32(reg_offset, reg_val);
7923
7924 adapter->vf_data[vf].spoofchk_enabled = setting;
7925 return E1000_SUCCESS;
7926}
7927
Williams, Mitch A8151d292010-02-10 01:44:24 +00007928static int igb_ndo_get_vf_config(struct net_device *netdev,
7929 int vf, struct ifla_vf_info *ivi)
7930{
7931 struct igb_adapter *adapter = netdev_priv(netdev);
7932 if (vf >= adapter->vfs_allocated_count)
7933 return -EINVAL;
7934 ivi->vf = vf;
7935 memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN);
Lior Levy17dc5662011-02-08 02:28:46 +00007936 ivi->tx_rate = adapter->vf_data[vf].tx_rate;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007937 ivi->vlan = adapter->vf_data[vf].pf_vlan;
7938 ivi->qos = adapter->vf_data[vf].pf_qos;
Lior Levy70ea4782013-03-03 20:27:48 +00007939 ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007940 return 0;
7941}
7942
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007943static void igb_vmm_control(struct igb_adapter *adapter)
7944{
7945 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck10d8e902009-10-27 15:54:04 +00007946 u32 reg;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007947
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007948 switch (hw->mac.type) {
7949 case e1000_82575:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00007950 case e1000_i210:
7951 case e1000_i211:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00007952 case e1000_i354:
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007953 default:
7954 /* replication is not supported for 82575 */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007955 return;
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007956 case e1000_82576:
7957 /* notify HW that the MAC is adding vlan tags */
7958 reg = rd32(E1000_DTXCTL);
7959 reg |= E1000_DTXCTL_VLAN_ADDED;
7960 wr32(E1000_DTXCTL, reg);
7961 case e1000_82580:
7962 /* enable replication vlan tag stripping */
7963 reg = rd32(E1000_RPLOLR);
7964 reg |= E1000_RPLOLR_STRVLAN;
7965 wr32(E1000_RPLOLR, reg);
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +00007966 case e1000_i350:
7967 /* none of the above registers are supported by i350 */
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007968 break;
7969 }
Alexander Duyck10d8e902009-10-27 15:54:04 +00007970
Alexander Duyckd4960302009-10-27 15:53:45 +00007971 if (adapter->vfs_allocated_count) {
7972 igb_vmdq_set_loopback_pf(hw, true);
7973 igb_vmdq_set_replication_pf(hw, true);
Greg Rose13800462010-11-06 02:08:26 +00007974 igb_vmdq_set_anti_spoofing_pf(hw, true,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007975 adapter->vfs_allocated_count);
Alexander Duyckd4960302009-10-27 15:53:45 +00007976 } else {
7977 igb_vmdq_set_loopback_pf(hw, false);
7978 igb_vmdq_set_replication_pf(hw, false);
7979 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007980}
7981
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007982static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
7983{
7984 struct e1000_hw *hw = &adapter->hw;
7985 u32 dmac_thr;
7986 u16 hwm;
7987
7988 if (hw->mac.type > e1000_82580) {
7989 if (adapter->flags & IGB_FLAG_DMAC) {
7990 u32 reg;
7991
7992 /* force threshold to 0. */
7993 wr32(E1000_DMCTXTH, 0);
7994
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007995 /* DMA Coalescing high water mark needs to be greater
Matthew Vicke8c626e2011-11-17 08:33:12 +00007996 * than the Rx threshold. Set hwm to PBA - max frame
7997 * size in 16B units, capping it at PBA - 6KB.
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007998 */
Matthew Vicke8c626e2011-11-17 08:33:12 +00007999 hwm = 64 * pba - adapter->max_frame_size / 16;
8000 if (hwm < 64 * (pba - 6))
8001 hwm = 64 * (pba - 6);
8002 reg = rd32(E1000_FCRTC);
8003 reg &= ~E1000_FCRTC_RTH_COAL_MASK;
8004 reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT)
8005 & E1000_FCRTC_RTH_COAL_MASK);
8006 wr32(E1000_FCRTC, reg);
8007
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008008 /* Set the DMA Coalescing Rx threshold to PBA - 2 * max
Matthew Vicke8c626e2011-11-17 08:33:12 +00008009 * frame size, capping it at PBA - 10KB.
8010 */
8011 dmac_thr = pba - adapter->max_frame_size / 512;
8012 if (dmac_thr < pba - 10)
8013 dmac_thr = pba - 10;
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008014 reg = rd32(E1000_DMACR);
8015 reg &= ~E1000_DMACR_DMACTHR_MASK;
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008016 reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT)
8017 & E1000_DMACR_DMACTHR_MASK);
8018
8019 /* transition to L0x or L1 if available..*/
8020 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
8021
8022 /* watchdog timer= +-1000 usec in 32usec intervals */
8023 reg |= (1000 >> 5);
Matthew Vick0c02dd92012-04-14 05:20:32 +00008024
8025 /* Disable BMC-to-OS Watchdog Enable */
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00008026 if (hw->mac.type != e1000_i354)
8027 reg &= ~E1000_DMACR_DC_BMC2OSW_EN;
8028
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008029 wr32(E1000_DMACR, reg);
8030
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008031 /* no lower threshold to disable
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008032 * coalescing(smart fifb)-UTRESH=0
8033 */
8034 wr32(E1000_DMCRTRH, 0);
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008035
8036 reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4);
8037
8038 wr32(E1000_DMCTLX, reg);
8039
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008040 /* free space in tx packet buffer to wake from
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008041 * DMA coal
8042 */
8043 wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE -
8044 (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6);
8045
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008046 /* make low power state decision controlled
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008047 * by DMA coal
8048 */
8049 reg = rd32(E1000_PCIEMISC);
8050 reg &= ~E1000_PCIEMISC_LX_DECISION;
8051 wr32(E1000_PCIEMISC, reg);
8052 } /* endif adapter->dmac is not disabled */
8053 } else if (hw->mac.type == e1000_82580) {
8054 u32 reg = rd32(E1000_PCIEMISC);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00008055
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00008056 wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION);
8057 wr32(E1000_DMACR, 0);
8058 }
8059}
8060
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008061/**
8062 * igb_read_i2c_byte - Reads 8 bit word over I2C
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008063 * @hw: pointer to hardware structure
8064 * @byte_offset: byte offset to read
8065 * @dev_addr: device address
8066 * @data: value read
8067 *
8068 * Performs byte read operation over I2C interface at
8069 * a specified device address.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008070 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008071s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008072 u8 dev_addr, u8 *data)
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008073{
8074 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
Carolyn Wyborny603e86f2013-02-20 07:40:55 +00008075 struct i2c_client *this_client = adapter->i2c_client;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008076 s32 status;
8077 u16 swfw_mask = 0;
8078
8079 if (!this_client)
8080 return E1000_ERR_I2C;
8081
8082 swfw_mask = E1000_SWFW_PHY0_SM;
8083
8084 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)
8085 != E1000_SUCCESS)
8086 return E1000_ERR_SWFW_SYNC;
8087
8088 status = i2c_smbus_read_byte_data(this_client, byte_offset);
8089 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
8090
8091 if (status < 0)
8092 return E1000_ERR_I2C;
8093 else {
8094 *data = status;
8095 return E1000_SUCCESS;
8096 }
8097}
8098
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008099/**
8100 * igb_write_i2c_byte - Writes 8 bit word over I2C
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008101 * @hw: pointer to hardware structure
8102 * @byte_offset: byte offset to write
8103 * @dev_addr: device address
8104 * @data: value to write
8105 *
8106 * Performs byte write operation over I2C interface at
8107 * a specified device address.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008108 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008109s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008110 u8 dev_addr, u8 data)
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008111{
8112 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
Carolyn Wyborny603e86f2013-02-20 07:40:55 +00008113 struct i2c_client *this_client = adapter->i2c_client;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008114 s32 status;
8115 u16 swfw_mask = E1000_SWFW_PHY0_SM;
8116
8117 if (!this_client)
8118 return E1000_ERR_I2C;
8119
8120 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS)
8121 return E1000_ERR_SWFW_SYNC;
8122 status = i2c_smbus_write_byte_data(this_client, byte_offset, data);
8123 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
8124
8125 if (status)
8126 return E1000_ERR_I2C;
8127 else
8128 return E1000_SUCCESS;
8129
8130}
Laura Mihaela Vasilescu907b7832013-10-01 04:33:56 -07008131
8132int igb_reinit_queues(struct igb_adapter *adapter)
8133{
8134 struct net_device *netdev = adapter->netdev;
8135 struct pci_dev *pdev = adapter->pdev;
8136 int err = 0;
8137
8138 if (netif_running(netdev))
8139 igb_close(netdev);
8140
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00008141 igb_reset_interrupt_capability(adapter);
Laura Mihaela Vasilescu907b7832013-10-01 04:33:56 -07008142
8143 if (igb_init_interrupt_scheme(adapter, true)) {
8144 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
8145 return -ENOMEM;
8146 }
8147
8148 if (netif_running(netdev))
8149 err = igb_open(netdev);
8150
8151 return err;
8152}
Auke Kok9d5c8242008-01-24 02:22:38 -08008153/* igb_main.c */