blob: 1ebdb461fed3409e025335578f6e1e2df0c8f54e [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
Todd Fujinaka6fb46902015-05-20 15:40:20 -070060#define MIN 3
61#define BUILD 0
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
Carolyn Wybornycd1631c2014-04-11 01:47:08 +000075static const struct pci_device_id 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
Auke Kok9d5c8242008-01-24 02:22:38 -0800117static int igb_setup_all_tx_resources(struct igb_adapter *);
118static int igb_setup_all_rx_resources(struct igb_adapter *);
119static void igb_free_all_tx_resources(struct igb_adapter *);
120static void igb_free_all_rx_resources(struct igb_adapter *);
Alexander Duyck06cf2662009-10-27 15:53:25 +0000121static void igb_setup_mrqc(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800122static int igb_probe(struct pci_dev *, const struct pci_device_id *);
Bill Pemberton9f9a12f2012-12-03 09:24:25 -0500123static void igb_remove(struct pci_dev *pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -0800124static int igb_sw_init(struct igb_adapter *);
125static int igb_open(struct net_device *);
126static int igb_close(struct net_device *);
Stefan Assmann53c7d062012-12-04 06:00:12 +0000127static void igb_configure(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800128static void igb_configure_tx(struct igb_adapter *);
129static void igb_configure_rx(struct igb_adapter *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800130static void igb_clean_all_tx_rings(struct igb_adapter *);
131static void igb_clean_all_rx_rings(struct igb_adapter *);
Mitch Williams3b644cf2008-06-27 10:59:48 -0700132static void igb_clean_tx_ring(struct igb_ring *);
133static void igb_clean_rx_ring(struct igb_ring *);
Alexander Duyckff41f8d2009-09-03 14:48:56 +0000134static void igb_set_rx_mode(struct net_device *);
Auke Kok9d5c8242008-01-24 02:22:38 -0800135static void igb_update_phy_info(unsigned long);
136static void igb_watchdog(unsigned long);
137static void igb_watchdog_task(struct work_struct *);
Alexander Duyckcd392f52011-08-26 07:43:59 +0000138static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, struct net_device *);
Eric Dumazet12dcd862010-10-15 17:27:10 +0000139static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *dev,
Carolyn Wybornyc502ea22014-04-11 01:46:33 +0000140 struct rtnl_link_stats64 *stats);
Auke Kok9d5c8242008-01-24 02:22:38 -0800141static int igb_change_mtu(struct net_device *, int);
142static int igb_set_mac(struct net_device *, void *);
Alexander Duyck68d480c2009-10-05 06:33:08 +0000143static void igb_set_uta(struct igb_adapter *adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -0800144static irqreturn_t igb_intr(int irq, void *);
145static irqreturn_t igb_intr_msi(int irq, void *);
146static irqreturn_t igb_msix_other(int irq, void *);
Alexander Duyck047e0032009-10-27 15:49:27 +0000147static irqreturn_t igb_msix_ring(int irq, void *);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700148#ifdef CONFIG_IGB_DCA
Alexander Duyck047e0032009-10-27 15:49:27 +0000149static void igb_update_dca(struct igb_q_vector *);
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700150static void igb_setup_dca(struct igb_adapter *);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700151#endif /* CONFIG_IGB_DCA */
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -0700152static int igb_poll(struct napi_struct *, int);
Alexander Duyck13fde972011-10-05 13:35:24 +0000153static bool igb_clean_tx_irq(struct igb_q_vector *);
Alexander Duyckcd392f52011-08-26 07:43:59 +0000154static bool igb_clean_rx_irq(struct igb_q_vector *, int);
Auke Kok9d5c8242008-01-24 02:22:38 -0800155static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
156static void igb_tx_timeout(struct net_device *);
157static void igb_reset_task(struct work_struct *);
Carolyn Wybornyc502ea22014-04-11 01:46:33 +0000158static void igb_vlan_mode(struct net_device *netdev,
159 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);
Sucheta Chakrabortyed616682014-05-22 09:59:05 -0400172static int igb_ndo_set_vf_bw(struct net_device *, int, int, int);
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 *);
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000189static int igb_runtime_suspend(struct device *dev);
190static int igb_runtime_resume(struct device *dev);
191static int igb_runtime_idle(struct device *dev);
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000192static const struct dev_pm_ops igb_pm_ops = {
193 SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume)
194 SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume,
195 igb_runtime_idle)
196};
Auke Kok9d5c8242008-01-24 02:22:38 -0800197#endif
198static void igb_shutdown(struct pci_dev *);
Greg Rosefa44f2f2013-01-17 01:03:06 -0800199static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs);
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700200#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700201static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
202static struct notifier_block dca_notifier = {
203 .notifier_call = igb_notify_dca,
204 .next = NULL,
205 .priority = 0
206};
207#endif
Auke Kok9d5c8242008-01-24 02:22:38 -0800208#ifdef CONFIG_NET_POLL_CONTROLLER
209/* for netdump / net console */
210static void igb_netpoll(struct net_device *);
211#endif
Alexander Duyck37680112009-02-19 20:40:30 -0800212#ifdef CONFIG_PCI_IOV
Carolyn Wyborny6dd6d2b2014-04-11 01:46:48 +0000213static unsigned int max_vfs;
Alexander Duyck2a3abf62009-04-07 14:37:52 +0000214module_param(max_vfs, uint, 0);
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000215MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function");
Alexander Duyck2a3abf62009-04-07 14:37:52 +0000216#endif /* CONFIG_PCI_IOV */
217
Auke Kok9d5c8242008-01-24 02:22:38 -0800218static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
219 pci_channel_state_t);
220static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
221static void igb_io_resume(struct pci_dev *);
222
Stephen Hemminger3646f0e2012-09-07 09:33:15 -0700223static const struct pci_error_handlers igb_err_handler = {
Auke Kok9d5c8242008-01-24 02:22:38 -0800224 .error_detected = igb_io_error_detected,
225 .slot_reset = igb_io_slot_reset,
226 .resume = igb_io_resume,
227};
228
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +0000229static void igb_init_dmac(struct igb_adapter *adapter, u32 pba);
Auke Kok9d5c8242008-01-24 02:22:38 -0800230
231static struct pci_driver igb_driver = {
232 .name = igb_driver_name,
233 .id_table = igb_pci_tbl,
234 .probe = igb_probe,
Bill Pemberton9f9a12f2012-12-03 09:24:25 -0500235 .remove = igb_remove,
Auke Kok9d5c8242008-01-24 02:22:38 -0800236#ifdef CONFIG_PM
Yan, Zheng749ab2c2012-01-04 20:23:37 +0000237 .driver.pm = &igb_pm_ops,
Auke Kok9d5c8242008-01-24 02:22:38 -0800238#endif
239 .shutdown = igb_shutdown,
Greg Rosefa44f2f2013-01-17 01:03:06 -0800240 .sriov_configure = igb_pci_sriov_configure,
Auke Kok9d5c8242008-01-24 02:22:38 -0800241 .err_handler = &igb_err_handler
242};
243
244MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
245MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
246MODULE_LICENSE("GPL");
247MODULE_VERSION(DRV_VERSION);
248
stephen hemmingerb3f4d592012-03-13 06:04:20 +0000249#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
250static int debug = -1;
251module_param(debug, int, 0);
252MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
253
Taku Izumic97ec422010-04-27 14:39:30 +0000254struct igb_reg_info {
255 u32 ofs;
256 char *name;
257};
258
259static const struct igb_reg_info igb_reg_info_tbl[] = {
260
261 /* General Registers */
262 {E1000_CTRL, "CTRL"},
263 {E1000_STATUS, "STATUS"},
264 {E1000_CTRL_EXT, "CTRL_EXT"},
265
266 /* Interrupt Registers */
267 {E1000_ICR, "ICR"},
268
269 /* RX Registers */
270 {E1000_RCTL, "RCTL"},
271 {E1000_RDLEN(0), "RDLEN"},
272 {E1000_RDH(0), "RDH"},
273 {E1000_RDT(0), "RDT"},
274 {E1000_RXDCTL(0), "RXDCTL"},
275 {E1000_RDBAL(0), "RDBAL"},
276 {E1000_RDBAH(0), "RDBAH"},
277
278 /* TX Registers */
279 {E1000_TCTL, "TCTL"},
280 {E1000_TDBAL(0), "TDBAL"},
281 {E1000_TDBAH(0), "TDBAH"},
282 {E1000_TDLEN(0), "TDLEN"},
283 {E1000_TDH(0), "TDH"},
284 {E1000_TDT(0), "TDT"},
285 {E1000_TXDCTL(0), "TXDCTL"},
286 {E1000_TDFH, "TDFH"},
287 {E1000_TDFT, "TDFT"},
288 {E1000_TDFHS, "TDFHS"},
289 {E1000_TDFPC, "TDFPC"},
290
291 /* List Terminator */
292 {}
293};
294
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000295/* igb_regdump - register printout routine */
Taku Izumic97ec422010-04-27 14:39:30 +0000296static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo)
297{
298 int n = 0;
299 char rname[16];
300 u32 regs[8];
301
302 switch (reginfo->ofs) {
303 case E1000_RDLEN(0):
304 for (n = 0; n < 4; n++)
305 regs[n] = rd32(E1000_RDLEN(n));
306 break;
307 case E1000_RDH(0):
308 for (n = 0; n < 4; n++)
309 regs[n] = rd32(E1000_RDH(n));
310 break;
311 case E1000_RDT(0):
312 for (n = 0; n < 4; n++)
313 regs[n] = rd32(E1000_RDT(n));
314 break;
315 case E1000_RXDCTL(0):
316 for (n = 0; n < 4; n++)
317 regs[n] = rd32(E1000_RXDCTL(n));
318 break;
319 case E1000_RDBAL(0):
320 for (n = 0; n < 4; n++)
321 regs[n] = rd32(E1000_RDBAL(n));
322 break;
323 case E1000_RDBAH(0):
324 for (n = 0; n < 4; n++)
325 regs[n] = rd32(E1000_RDBAH(n));
326 break;
327 case E1000_TDBAL(0):
328 for (n = 0; n < 4; n++)
329 regs[n] = rd32(E1000_RDBAL(n));
330 break;
331 case E1000_TDBAH(0):
332 for (n = 0; n < 4; n++)
333 regs[n] = rd32(E1000_TDBAH(n));
334 break;
335 case E1000_TDLEN(0):
336 for (n = 0; n < 4; n++)
337 regs[n] = rd32(E1000_TDLEN(n));
338 break;
339 case E1000_TDH(0):
340 for (n = 0; n < 4; n++)
341 regs[n] = rd32(E1000_TDH(n));
342 break;
343 case E1000_TDT(0):
344 for (n = 0; n < 4; n++)
345 regs[n] = rd32(E1000_TDT(n));
346 break;
347 case E1000_TXDCTL(0):
348 for (n = 0; n < 4; n++)
349 regs[n] = rd32(E1000_TXDCTL(n));
350 break;
351 default:
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000352 pr_info("%-15s %08x\n", reginfo->name, rd32(reginfo->ofs));
Taku Izumic97ec422010-04-27 14:39:30 +0000353 return;
354 }
355
356 snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000357 pr_info("%-15s %08x %08x %08x %08x\n", rname, regs[0], regs[1],
358 regs[2], regs[3]);
Taku Izumic97ec422010-04-27 14:39:30 +0000359}
360
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000361/* igb_dump - Print registers, Tx-rings and Rx-rings */
Taku Izumic97ec422010-04-27 14:39:30 +0000362static void igb_dump(struct igb_adapter *adapter)
363{
364 struct net_device *netdev = adapter->netdev;
365 struct e1000_hw *hw = &adapter->hw;
366 struct igb_reg_info *reginfo;
Taku Izumic97ec422010-04-27 14:39:30 +0000367 struct igb_ring *tx_ring;
368 union e1000_adv_tx_desc *tx_desc;
369 struct my_u0 { u64 a; u64 b; } *u0;
Taku Izumic97ec422010-04-27 14:39:30 +0000370 struct igb_ring *rx_ring;
371 union e1000_adv_rx_desc *rx_desc;
372 u32 staterr;
Alexander Duyck6ad4edf2011-08-26 07:45:26 +0000373 u16 i, n;
Taku Izumic97ec422010-04-27 14:39:30 +0000374
375 if (!netif_msg_hw(adapter))
376 return;
377
378 /* Print netdevice Info */
379 if (netdev) {
380 dev_info(&adapter->pdev->dev, "Net device Info\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000381 pr_info("Device Name state trans_start last_rx\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000382 pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
383 netdev->state, netdev->trans_start, netdev->last_rx);
Taku Izumic97ec422010-04-27 14:39:30 +0000384 }
385
386 /* Print Registers */
387 dev_info(&adapter->pdev->dev, "Register Dump\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000388 pr_info(" Register Name Value\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000389 for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl;
390 reginfo->name; reginfo++) {
391 igb_regdump(hw, reginfo);
392 }
393
394 /* Print TX Ring Summary */
395 if (!netdev || !netif_running(netdev))
396 goto exit;
397
398 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000399 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000400 for (n = 0; n < adapter->num_tx_queues; n++) {
Alexander Duyck06034642011-08-26 07:44:22 +0000401 struct igb_tx_buffer *buffer_info;
Taku Izumic97ec422010-04-27 14:39:30 +0000402 tx_ring = adapter->tx_ring[n];
Alexander Duyck06034642011-08-26 07:44:22 +0000403 buffer_info = &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000404 pr_info(" %5d %5X %5X %016llX %04X %p %016llX\n",
405 n, tx_ring->next_to_use, tx_ring->next_to_clean,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000406 (u64)dma_unmap_addr(buffer_info, dma),
407 dma_unmap_len(buffer_info, len),
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000408 buffer_info->next_to_watch,
409 (u64)buffer_info->time_stamp);
Taku Izumic97ec422010-04-27 14:39:30 +0000410 }
411
412 /* Print TX Rings */
413 if (!netif_msg_tx_done(adapter))
414 goto rx_ring_summary;
415
416 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
417
418 /* Transmit Descriptor Formats
419 *
420 * Advanced Transmit Descriptor
421 * +--------------------------------------------------------------+
422 * 0 | Buffer Address [63:0] |
423 * +--------------------------------------------------------------+
424 * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN |
425 * +--------------------------------------------------------------+
426 * 63 46 45 40 39 38 36 35 32 31 24 15 0
427 */
428
429 for (n = 0; n < adapter->num_tx_queues; n++) {
430 tx_ring = adapter->tx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000431 pr_info("------------------------------------\n");
432 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
433 pr_info("------------------------------------\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000434 pr_info("T [desc] [address 63:0 ] [PlPOCIStDDM Ln] [bi->dma ] leng ntw timestamp bi->skb\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000435
436 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000437 const char *next_desc;
Alexander Duyck06034642011-08-26 07:44:22 +0000438 struct igb_tx_buffer *buffer_info;
Alexander Duyck601369062011-08-26 07:44:05 +0000439 tx_desc = IGB_TX_DESC(tx_ring, i);
Alexander Duyck06034642011-08-26 07:44:22 +0000440 buffer_info = &tx_ring->tx_buffer_info[i];
Taku Izumic97ec422010-04-27 14:39:30 +0000441 u0 = (struct my_u0 *)tx_desc;
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000442 if (i == tx_ring->next_to_use &&
443 i == tx_ring->next_to_clean)
444 next_desc = " NTC/U";
445 else if (i == tx_ring->next_to_use)
446 next_desc = " NTU";
447 else if (i == tx_ring->next_to_clean)
448 next_desc = " NTC";
449 else
450 next_desc = "";
451
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000452 pr_info("T [0x%03X] %016llX %016llX %016llX %04X %p %016llX %p%s\n",
453 i, le64_to_cpu(u0->a),
Taku Izumic97ec422010-04-27 14:39:30 +0000454 le64_to_cpu(u0->b),
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000455 (u64)dma_unmap_addr(buffer_info, dma),
456 dma_unmap_len(buffer_info, len),
Taku Izumic97ec422010-04-27 14:39:30 +0000457 buffer_info->next_to_watch,
458 (u64)buffer_info->time_stamp,
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000459 buffer_info->skb, next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000460
Emil Tantilovb6695882012-07-28 05:07:48 +0000461 if (netif_msg_pktdata(adapter) && buffer_info->skb)
Taku Izumic97ec422010-04-27 14:39:30 +0000462 print_hex_dump(KERN_INFO, "",
463 DUMP_PREFIX_ADDRESS,
Emil Tantilovb6695882012-07-28 05:07:48 +0000464 16, 1, buffer_info->skb->data,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +0000465 dma_unmap_len(buffer_info, len),
466 true);
Taku Izumic97ec422010-04-27 14:39:30 +0000467 }
468 }
469
470 /* Print RX Rings Summary */
471rx_ring_summary:
472 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000473 pr_info("Queue [NTU] [NTC]\n");
Taku Izumic97ec422010-04-27 14:39:30 +0000474 for (n = 0; n < adapter->num_rx_queues; n++) {
475 rx_ring = adapter->rx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000476 pr_info(" %5d %5X %5X\n",
477 n, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumic97ec422010-04-27 14:39:30 +0000478 }
479
480 /* Print RX Rings */
481 if (!netif_msg_rx_status(adapter))
482 goto exit;
483
484 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
485
486 /* Advanced Receive Descriptor (Read) Format
487 * 63 1 0
488 * +-----------------------------------------------------+
489 * 0 | Packet Buffer Address [63:1] |A0/NSE|
490 * +----------------------------------------------+------+
491 * 8 | Header Buffer Address [63:1] | DD |
492 * +-----------------------------------------------------+
493 *
494 *
495 * Advanced Receive Descriptor (Write-Back) Format
496 *
497 * 63 48 47 32 31 30 21 20 17 16 4 3 0
498 * +------------------------------------------------------+
499 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
500 * | Checksum Ident | | | | Type | Type |
501 * +------------------------------------------------------+
502 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
503 * +------------------------------------------------------+
504 * 63 48 47 32 31 20 19 0
505 */
506
507 for (n = 0; n < adapter->num_rx_queues; n++) {
508 rx_ring = adapter->rx_ring[n];
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000509 pr_info("------------------------------------\n");
510 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
511 pr_info("------------------------------------\n");
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +0000512 pr_info("R [desc] [ PktBuf A0] [ HeadBuf DD] [bi->dma ] [bi->skb] <-- Adv Rx Read format\n");
513 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 +0000514
515 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000516 const char *next_desc;
Alexander Duyck06034642011-08-26 07:44:22 +0000517 struct igb_rx_buffer *buffer_info;
518 buffer_info = &rx_ring->rx_buffer_info[i];
Alexander Duyck601369062011-08-26 07:44:05 +0000519 rx_desc = IGB_RX_DESC(rx_ring, i);
Taku Izumic97ec422010-04-27 14:39:30 +0000520 u0 = (struct my_u0 *)rx_desc;
521 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000522
523 if (i == rx_ring->next_to_use)
524 next_desc = " NTU";
525 else if (i == rx_ring->next_to_clean)
526 next_desc = " NTC";
527 else
528 next_desc = "";
529
Taku Izumic97ec422010-04-27 14:39:30 +0000530 if (staterr & E1000_RXD_STAT_DD) {
531 /* Descriptor Done */
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000532 pr_info("%s[0x%03X] %016llX %016llX ---------------- %s\n",
533 "RWB", i,
Taku Izumic97ec422010-04-27 14:39:30 +0000534 le64_to_cpu(u0->a),
535 le64_to_cpu(u0->b),
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000536 next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000537 } else {
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000538 pr_info("%s[0x%03X] %016llX %016llX %016llX %s\n",
539 "R ", i,
Taku Izumic97ec422010-04-27 14:39:30 +0000540 le64_to_cpu(u0->a),
541 le64_to_cpu(u0->b),
542 (u64)buffer_info->dma,
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000543 next_desc);
Taku Izumic97ec422010-04-27 14:39:30 +0000544
Emil Tantilovb6695882012-07-28 05:07:48 +0000545 if (netif_msg_pktdata(adapter) &&
Alexander Duyck1a1c2252012-09-25 00:30:52 +0000546 buffer_info->dma && buffer_info->page) {
Alexander Duyck44390ca2011-08-26 07:43:38 +0000547 print_hex_dump(KERN_INFO, "",
548 DUMP_PREFIX_ADDRESS,
549 16, 1,
Emil Tantilovb6695882012-07-28 05:07:48 +0000550 page_address(buffer_info->page) +
551 buffer_info->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +0000552 IGB_RX_BUFSZ, true);
Taku Izumic97ec422010-04-27 14:39:30 +0000553 }
554 }
Taku Izumic97ec422010-04-27 14:39:30 +0000555 }
556 }
557
558exit:
559 return;
560}
561
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000562/**
563 * igb_get_i2c_data - Reads the I2C SDA data bit
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000564 * @hw: pointer to hardware structure
565 * @i2cctl: Current value of I2CCTL register
566 *
567 * Returns the I2C data bit value
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000568 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000569static int igb_get_i2c_data(void *data)
570{
571 struct igb_adapter *adapter = (struct igb_adapter *)data;
572 struct e1000_hw *hw = &adapter->hw;
573 s32 i2cctl = rd32(E1000_I2CPARAMS);
574
Carolyn Wybornyda1f1df2014-04-11 02:11:17 +0000575 return !!(i2cctl & E1000_I2C_DATA_IN);
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000576}
577
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000578/**
579 * igb_set_i2c_data - Sets the I2C data bit
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000580 * @data: pointer to hardware structure
581 * @state: I2C data value (0 or 1) to set
582 *
583 * Sets the I2C data bit
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000584 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000585static void igb_set_i2c_data(void *data, int state)
586{
587 struct igb_adapter *adapter = (struct igb_adapter *)data;
588 struct e1000_hw *hw = &adapter->hw;
589 s32 i2cctl = rd32(E1000_I2CPARAMS);
590
591 if (state)
592 i2cctl |= E1000_I2C_DATA_OUT;
593 else
594 i2cctl &= ~E1000_I2C_DATA_OUT;
595
596 i2cctl &= ~E1000_I2C_DATA_OE_N;
597 i2cctl |= E1000_I2C_CLK_OE_N;
598 wr32(E1000_I2CPARAMS, i2cctl);
599 wrfl();
600
601}
602
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000603/**
604 * igb_set_i2c_clk - Sets the I2C SCL clock
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000605 * @data: pointer to hardware structure
606 * @state: state to set clock
607 *
608 * Sets the I2C clock line to state
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000609 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000610static void igb_set_i2c_clk(void *data, int state)
611{
612 struct igb_adapter *adapter = (struct igb_adapter *)data;
613 struct e1000_hw *hw = &adapter->hw;
614 s32 i2cctl = rd32(E1000_I2CPARAMS);
615
616 if (state) {
617 i2cctl |= E1000_I2C_CLK_OUT;
618 i2cctl &= ~E1000_I2C_CLK_OE_N;
619 } else {
620 i2cctl &= ~E1000_I2C_CLK_OUT;
621 i2cctl &= ~E1000_I2C_CLK_OE_N;
622 }
623 wr32(E1000_I2CPARAMS, i2cctl);
624 wrfl();
625}
626
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000627/**
628 * igb_get_i2c_clk - Gets the I2C SCL clock state
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000629 * @data: pointer to hardware structure
630 *
631 * Gets the I2C clock state
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000632 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000633static int igb_get_i2c_clk(void *data)
634{
635 struct igb_adapter *adapter = (struct igb_adapter *)data;
636 struct e1000_hw *hw = &adapter->hw;
637 s32 i2cctl = rd32(E1000_I2CPARAMS);
638
Carolyn Wybornyda1f1df2014-04-11 02:11:17 +0000639 return !!(i2cctl & E1000_I2C_CLK_IN);
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +0000640}
641
642static const struct i2c_algo_bit_data igb_i2c_algo = {
643 .setsda = igb_set_i2c_data,
644 .setscl = igb_set_i2c_clk,
645 .getsda = igb_get_i2c_data,
646 .getscl = igb_get_i2c_clk,
647 .udelay = 5,
648 .timeout = 20,
649};
650
Auke Kok9d5c8242008-01-24 02:22:38 -0800651/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000652 * igb_get_hw_dev - return device
653 * @hw: pointer to hardware structure
654 *
655 * used by hardware layer to print debugging information
Auke Kok9d5c8242008-01-24 02:22:38 -0800656 **/
Alexander Duyckc0410762010-03-25 13:10:08 +0000657struct net_device *igb_get_hw_dev(struct e1000_hw *hw)
Auke Kok9d5c8242008-01-24 02:22:38 -0800658{
659 struct igb_adapter *adapter = hw->back;
Alexander Duyckc0410762010-03-25 13:10:08 +0000660 return adapter->netdev;
Auke Kok9d5c8242008-01-24 02:22:38 -0800661}
Patrick Ohly38c845c2009-02-12 05:03:41 +0000662
663/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000664 * igb_init_module - Driver Registration Routine
Auke Kok9d5c8242008-01-24 02:22:38 -0800665 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000666 * igb_init_module is the first routine called when the driver is
667 * loaded. All it does is register with the PCI subsystem.
Auke Kok9d5c8242008-01-24 02:22:38 -0800668 **/
669static int __init igb_init_module(void)
670{
671 int ret;
Carolyn Wyborny9005df32014-04-11 01:45:34 +0000672
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000673 pr_info("%s - version %s\n",
Auke Kok9d5c8242008-01-24 02:22:38 -0800674 igb_driver_string, igb_driver_version);
Jeff Kirsher876d2d62011-10-21 20:01:34 +0000675 pr_info("%s\n", igb_copyright);
Auke Kok9d5c8242008-01-24 02:22:38 -0800676
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700677#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700678 dca_register_notify(&dca_notifier);
679#endif
Alexander Duyckbbd98fe2009-01-31 00:52:30 -0800680 ret = pci_register_driver(&igb_driver);
Auke Kok9d5c8242008-01-24 02:22:38 -0800681 return ret;
682}
683
684module_init(igb_init_module);
685
686/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000687 * igb_exit_module - Driver Exit Cleanup Routine
Auke Kok9d5c8242008-01-24 02:22:38 -0800688 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000689 * igb_exit_module is called just before the driver is removed
690 * from memory.
Auke Kok9d5c8242008-01-24 02:22:38 -0800691 **/
692static void __exit igb_exit_module(void)
693{
Jeff Kirsher421e02f2008-10-17 11:08:31 -0700694#ifdef CONFIG_IGB_DCA
Jeb Cramerfe4506b2008-07-08 15:07:55 -0700695 dca_unregister_notify(&dca_notifier);
696#endif
Auke Kok9d5c8242008-01-24 02:22:38 -0800697 pci_unregister_driver(&igb_driver);
698}
699
700module_exit(igb_exit_module);
701
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800702#define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1))
703/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000704 * igb_cache_ring_register - Descriptor ring to register mapping
705 * @adapter: board private structure to initialize
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800706 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000707 * Once we know the feature-set enabled for the device, we'll cache
708 * the register offset the descriptor ring is assigned to.
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800709 **/
710static void igb_cache_ring_register(struct igb_adapter *adapter)
711{
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000712 int i = 0, j = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +0000713 u32 rbase_offset = adapter->vfs_allocated_count;
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800714
715 switch (adapter->hw.mac.type) {
716 case e1000_82576:
717 /* The queues are allocated for virtualization such that VF 0
718 * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc.
719 * In order to avoid collision we start at the first free queue
720 * and continue consuming queues in the same sequence
721 */
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000722 if (adapter->vfs_allocated_count) {
Alexander Duycka99955f2009-11-12 18:37:19 +0000723 for (; i < adapter->rss_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +0000724 adapter->rx_ring[i]->reg_idx = rbase_offset +
Jeff Kirsherb980ac12013-02-23 07:29:56 +0000725 Q_IDX_82576(i);
Alexander Duyckee1b9f02009-10-27 23:49:40 +0000726 }
Carolyn Wybornyb26141d2014-04-17 04:10:13 +0000727 /* Fall through */
Alexander Duyck26bc19e2008-12-26 01:34:11 -0800728 case e1000_82575:
Alexander Duyck55cac242009-11-19 12:42:21 +0000729 case e1000_82580:
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +0000730 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +0000731 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +0000732 case e1000_i210:
733 case e1000_i211:
Carolyn Wybornyb26141d2014-04-17 04:10:13 +0000734 /* Fall through */
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 */
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08001013 if (q_vector)
1014 kfree_rcu(q_vector, rcu);
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001015}
1016
1017/**
1018 * igb_reset_q_vector - Reset config for interrupt vector
1019 * @adapter: board private structure to initialize
1020 * @v_idx: Index of vector to be reset
1021 *
1022 * If NAPI is enabled it will delete any references to the
1023 * NAPI struct. This is preparation for igb_free_q_vector.
1024 **/
1025static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx)
1026{
1027 struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
1028
Christoph Paaschcb06d102014-03-21 03:48:19 -07001029 /* Coming from igb_set_interrupt_capability, the vectors are not yet
1030 * allocated. So, q_vector is NULL so we should stop here.
1031 */
1032 if (!q_vector)
1033 return;
1034
Alexander Duyck5536d212012-09-25 00:31:17 +00001035 if (q_vector->tx.ring)
1036 adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL;
1037
1038 if (q_vector->rx.ring)
Toshiaki Makita2439fc42015-04-13 18:15:11 +09001039 adapter->rx_ring[q_vector->rx.ring->queue_index] = NULL;
Alexander Duyck5536d212012-09-25 00:31:17 +00001040
Alexander Duyck5536d212012-09-25 00:31:17 +00001041 netif_napi_del(&q_vector->napi);
1042
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001043}
1044
1045static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
1046{
1047 int v_idx = adapter->num_q_vectors;
1048
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001049 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001050 pci_disable_msix(adapter->pdev);
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001051 else if (adapter->flags & IGB_FLAG_HAS_MSI)
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001052 pci_disable_msi(adapter->pdev);
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001053
1054 while (v_idx--)
1055 igb_reset_q_vector(adapter, v_idx);
Alexander Duyck5536d212012-09-25 00:31:17 +00001056}
1057
1058/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001059 * igb_free_q_vectors - Free memory allocated for interrupt vectors
1060 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001061 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001062 * This function frees the memory allocated to the q_vectors. In addition if
1063 * NAPI is enabled it will delete any references to the NAPI struct prior
1064 * to freeing the q_vector.
Alexander Duyck047e0032009-10-27 15:49:27 +00001065 **/
1066static void igb_free_q_vectors(struct igb_adapter *adapter)
1067{
Alexander Duyck5536d212012-09-25 00:31:17 +00001068 int v_idx = adapter->num_q_vectors;
Alexander Duyck047e0032009-10-27 15:49:27 +00001069
Alexander Duyck5536d212012-09-25 00:31:17 +00001070 adapter->num_tx_queues = 0;
1071 adapter->num_rx_queues = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +00001072 adapter->num_q_vectors = 0;
Alexander Duyck5536d212012-09-25 00:31:17 +00001073
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001074 while (v_idx--) {
1075 igb_reset_q_vector(adapter, v_idx);
Alexander Duyck5536d212012-09-25 00:31:17 +00001076 igb_free_q_vector(adapter, v_idx);
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001077 }
Alexander Duyck047e0032009-10-27 15:49:27 +00001078}
1079
1080/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001081 * igb_clear_interrupt_scheme - reset the device to a state of no interrupts
1082 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001083 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001084 * This function resets the device so that it has 0 Rx queues, Tx queues, and
1085 * MSI-X interrupts allocated.
Alexander Duyck047e0032009-10-27 15:49:27 +00001086 */
1087static void igb_clear_interrupt_scheme(struct igb_adapter *adapter)
1088{
Alexander Duyck047e0032009-10-27 15:49:27 +00001089 igb_free_q_vectors(adapter);
1090 igb_reset_interrupt_capability(adapter);
1091}
Auke Kok9d5c8242008-01-24 02:22:38 -08001092
1093/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001094 * igb_set_interrupt_capability - set MSI or MSI-X if supported
1095 * @adapter: board private structure to initialize
1096 * @msix: boolean value of MSIX capability
Auke Kok9d5c8242008-01-24 02:22:38 -08001097 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001098 * Attempt to configure interrupts using the best available
1099 * capabilities of the hardware and kernel.
Auke Kok9d5c8242008-01-24 02:22:38 -08001100 **/
Stefan Assmann53c7d062012-12-04 06:00:12 +00001101static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix)
Auke Kok9d5c8242008-01-24 02:22:38 -08001102{
1103 int err;
1104 int numvecs, i;
1105
Stefan Assmann53c7d062012-12-04 06:00:12 +00001106 if (!msix)
1107 goto msi_only;
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001108 adapter->flags |= IGB_FLAG_HAS_MSIX;
Stefan Assmann53c7d062012-12-04 06:00:12 +00001109
Alexander Duyck83b71802009-02-06 23:15:45 +00001110 /* Number of supported queues. */
Alexander Duycka99955f2009-11-12 18:37:19 +00001111 adapter->num_rx_queues = adapter->rss_queues;
Greg Rose5fa85172010-07-01 13:38:16 +00001112 if (adapter->vfs_allocated_count)
1113 adapter->num_tx_queues = 1;
1114 else
1115 adapter->num_tx_queues = adapter->rss_queues;
Alexander Duyck83b71802009-02-06 23:15:45 +00001116
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001117 /* start with one vector for every Rx queue */
Alexander Duyck047e0032009-10-27 15:49:27 +00001118 numvecs = adapter->num_rx_queues;
1119
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001120 /* if Tx handler is separate add 1 for every Tx queue */
Alexander Duycka99955f2009-11-12 18:37:19 +00001121 if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS))
1122 numvecs += adapter->num_tx_queues;
Alexander Duyck047e0032009-10-27 15:49:27 +00001123
1124 /* store the number of vectors reserved for queues */
1125 adapter->num_q_vectors = numvecs;
1126
1127 /* add 1 vector for link status interrupts */
1128 numvecs++;
Auke Kok9d5c8242008-01-24 02:22:38 -08001129 for (i = 0; i < numvecs; i++)
1130 adapter->msix_entries[i].entry = i;
1131
Alexander Gordeev479d02d2014-02-18 11:11:43 +01001132 err = pci_enable_msix_range(adapter->pdev,
1133 adapter->msix_entries,
1134 numvecs,
1135 numvecs);
1136 if (err > 0)
Alexander Duyck0c2cc022012-09-25 00:31:22 +00001137 return;
Auke Kok9d5c8242008-01-24 02:22:38 -08001138
1139 igb_reset_interrupt_capability(adapter);
1140
1141 /* If we can't do MSI-X, try MSI */
1142msi_only:
Christoph Paaschb7093232014-03-21 04:02:09 -07001143 adapter->flags &= ~IGB_FLAG_HAS_MSIX;
Alexander Duyck2a3abf62009-04-07 14:37:52 +00001144#ifdef CONFIG_PCI_IOV
1145 /* disable SR-IOV for non MSI-X configurations */
1146 if (adapter->vf_data) {
1147 struct e1000_hw *hw = &adapter->hw;
1148 /* disable iov and allow time for transactions to clear */
1149 pci_disable_sriov(adapter->pdev);
1150 msleep(500);
1151
1152 kfree(adapter->vf_data);
1153 adapter->vf_data = NULL;
1154 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
Jesse Brandeburg945a5152011-07-20 00:56:21 +00001155 wrfl();
Alexander Duyck2a3abf62009-04-07 14:37:52 +00001156 msleep(100);
1157 dev_info(&adapter->pdev->dev, "IOV Disabled\n");
1158 }
1159#endif
Alexander Duyck4fc82ad2009-10-27 23:45:42 +00001160 adapter->vfs_allocated_count = 0;
Alexander Duycka99955f2009-11-12 18:37:19 +00001161 adapter->rss_queues = 1;
Alexander Duyck4fc82ad2009-10-27 23:45:42 +00001162 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
Auke Kok9d5c8242008-01-24 02:22:38 -08001163 adapter->num_rx_queues = 1;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07001164 adapter->num_tx_queues = 1;
Alexander Duyck047e0032009-10-27 15:49:27 +00001165 adapter->num_q_vectors = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08001166 if (!pci_enable_msi(adapter->pdev))
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001167 adapter->flags |= IGB_FLAG_HAS_MSI;
Auke Kok9d5c8242008-01-24 02:22:38 -08001168}
1169
Alexander Duyck5536d212012-09-25 00:31:17 +00001170static void igb_add_ring(struct igb_ring *ring,
1171 struct igb_ring_container *head)
1172{
1173 head->ring = ring;
1174 head->count++;
1175}
1176
1177/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001178 * igb_alloc_q_vector - Allocate memory for a single interrupt vector
1179 * @adapter: board private structure to initialize
1180 * @v_count: q_vectors allocated on adapter, used for ring interleaving
1181 * @v_idx: index of vector in adapter struct
1182 * @txr_count: total number of Tx rings to allocate
1183 * @txr_idx: index of first Tx ring to allocate
1184 * @rxr_count: total number of Rx rings to allocate
1185 * @rxr_idx: index of first Rx ring to allocate
Alexander Duyck5536d212012-09-25 00:31:17 +00001186 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001187 * We allocate one q_vector. If allocation fails we return -ENOMEM.
Alexander Duyck5536d212012-09-25 00:31:17 +00001188 **/
1189static int igb_alloc_q_vector(struct igb_adapter *adapter,
1190 int v_count, int v_idx,
1191 int txr_count, int txr_idx,
1192 int rxr_count, int rxr_idx)
1193{
1194 struct igb_q_vector *q_vector;
1195 struct igb_ring *ring;
1196 int ring_count, size;
1197
1198 /* igb only supports 1 Tx and/or 1 Rx queue per vector */
1199 if (txr_count > 1 || rxr_count > 1)
1200 return -ENOMEM;
1201
1202 ring_count = txr_count + rxr_count;
1203 size = sizeof(struct igb_q_vector) +
1204 (sizeof(struct igb_ring) * ring_count);
1205
1206 /* allocate q_vector and rings */
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001207 q_vector = adapter->q_vector[v_idx];
Shota Suzuki72ddef02015-07-01 09:25:52 +09001208 if (!q_vector) {
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00001209 q_vector = kzalloc(size, GFP_KERNEL);
Shota Suzuki72ddef02015-07-01 09:25:52 +09001210 } else if (size > ksize(q_vector)) {
1211 kfree_rcu(q_vector, rcu);
1212 q_vector = kzalloc(size, GFP_KERNEL);
1213 } else {
Toshiaki Makitac0a06ee2015-04-13 18:15:10 +09001214 memset(q_vector, 0, size);
Shota Suzuki72ddef02015-07-01 09:25:52 +09001215 }
Alexander Duyck5536d212012-09-25 00:31:17 +00001216 if (!q_vector)
1217 return -ENOMEM;
1218
1219 /* initialize NAPI */
1220 netif_napi_add(adapter->netdev, &q_vector->napi,
1221 igb_poll, 64);
1222
1223 /* tie q_vector and adapter together */
1224 adapter->q_vector[v_idx] = q_vector;
1225 q_vector->adapter = adapter;
1226
1227 /* initialize work limits */
1228 q_vector->tx.work_limit = adapter->tx_work_limit;
1229
1230 /* initialize ITR configuration */
1231 q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0);
1232 q_vector->itr_val = IGB_START_ITR;
1233
1234 /* initialize pointer to rings */
1235 ring = q_vector->ring;
1236
Alexander Duyck4e2276672013-02-12 02:31:01 +00001237 /* intialize ITR */
1238 if (rxr_count) {
1239 /* rx or rx/tx vector */
1240 if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3)
1241 q_vector->itr_val = adapter->rx_itr_setting;
1242 } else {
1243 /* tx only vector */
1244 if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3)
1245 q_vector->itr_val = adapter->tx_itr_setting;
1246 }
1247
Alexander Duyck5536d212012-09-25 00:31:17 +00001248 if (txr_count) {
1249 /* assign generic ring traits */
1250 ring->dev = &adapter->pdev->dev;
1251 ring->netdev = adapter->netdev;
1252
1253 /* configure backlink on ring */
1254 ring->q_vector = q_vector;
1255
1256 /* update q_vector Tx values */
1257 igb_add_ring(ring, &q_vector->tx);
1258
1259 /* For 82575, context index must be unique per ring. */
1260 if (adapter->hw.mac.type == e1000_82575)
1261 set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags);
1262
1263 /* apply Tx specific ring traits */
1264 ring->count = adapter->tx_ring_count;
1265 ring->queue_index = txr_idx;
1266
John Stultz827da442013-10-07 15:51:58 -07001267 u64_stats_init(&ring->tx_syncp);
1268 u64_stats_init(&ring->tx_syncp2);
1269
Alexander Duyck5536d212012-09-25 00:31:17 +00001270 /* assign ring to adapter */
1271 adapter->tx_ring[txr_idx] = ring;
1272
1273 /* push pointer to next ring */
1274 ring++;
1275 }
1276
1277 if (rxr_count) {
1278 /* assign generic ring traits */
1279 ring->dev = &adapter->pdev->dev;
1280 ring->netdev = adapter->netdev;
1281
1282 /* configure backlink on ring */
1283 ring->q_vector = q_vector;
1284
1285 /* update q_vector Rx values */
1286 igb_add_ring(ring, &q_vector->rx);
1287
1288 /* set flag indicating ring supports SCTP checksum offload */
1289 if (adapter->hw.mac.type >= e1000_82576)
1290 set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags);
1291
Carolyn Wybornye52c0f92014-04-11 01:46:06 +00001292 /* On i350, i354, i210, and i211, loopback VLAN packets
Alexander Duyck5536d212012-09-25 00:31:17 +00001293 * have the tag byte-swapped.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001294 */
Alexander Duyck5536d212012-09-25 00:31:17 +00001295 if (adapter->hw.mac.type >= e1000_i350)
1296 set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags);
1297
1298 /* apply Rx specific ring traits */
1299 ring->count = adapter->rx_ring_count;
1300 ring->queue_index = rxr_idx;
1301
John Stultz827da442013-10-07 15:51:58 -07001302 u64_stats_init(&ring->rx_syncp);
1303
Alexander Duyck5536d212012-09-25 00:31:17 +00001304 /* assign ring to adapter */
1305 adapter->rx_ring[rxr_idx] = ring;
1306 }
1307
1308 return 0;
1309}
1310
1311
Auke Kok9d5c8242008-01-24 02:22:38 -08001312/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001313 * igb_alloc_q_vectors - Allocate memory for interrupt vectors
1314 * @adapter: board private structure to initialize
Alexander Duyck047e0032009-10-27 15:49:27 +00001315 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001316 * We allocate one q_vector per queue interrupt. If allocation fails we
1317 * return -ENOMEM.
Alexander Duyck047e0032009-10-27 15:49:27 +00001318 **/
1319static int igb_alloc_q_vectors(struct igb_adapter *adapter)
1320{
Alexander Duyck5536d212012-09-25 00:31:17 +00001321 int q_vectors = adapter->num_q_vectors;
1322 int rxr_remaining = adapter->num_rx_queues;
1323 int txr_remaining = adapter->num_tx_queues;
1324 int rxr_idx = 0, txr_idx = 0, v_idx = 0;
1325 int err;
Alexander Duyck047e0032009-10-27 15:49:27 +00001326
Alexander Duyck5536d212012-09-25 00:31:17 +00001327 if (q_vectors >= (rxr_remaining + txr_remaining)) {
1328 for (; rxr_remaining; v_idx++) {
1329 err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
1330 0, 0, 1, rxr_idx);
1331
1332 if (err)
1333 goto err_out;
1334
1335 /* update counts and index */
1336 rxr_remaining--;
1337 rxr_idx++;
1338 }
1339 }
1340
1341 for (; v_idx < q_vectors; v_idx++) {
1342 int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx);
1343 int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001344
Alexander Duyck5536d212012-09-25 00:31:17 +00001345 err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
1346 tqpv, txr_idx, rqpv, rxr_idx);
1347
1348 if (err)
Alexander Duyck047e0032009-10-27 15:49:27 +00001349 goto err_out;
Alexander Duyck5536d212012-09-25 00:31:17 +00001350
1351 /* update counts and index */
1352 rxr_remaining -= rqpv;
1353 txr_remaining -= tqpv;
1354 rxr_idx++;
1355 txr_idx++;
Alexander Duyck047e0032009-10-27 15:49:27 +00001356 }
Alexander Duyck81c2fc22011-08-26 07:45:20 +00001357
Alexander Duyck047e0032009-10-27 15:49:27 +00001358 return 0;
1359
1360err_out:
Alexander Duyck5536d212012-09-25 00:31:17 +00001361 adapter->num_tx_queues = 0;
1362 adapter->num_rx_queues = 0;
1363 adapter->num_q_vectors = 0;
1364
1365 while (v_idx--)
1366 igb_free_q_vector(adapter, v_idx);
1367
Alexander Duyck047e0032009-10-27 15:49:27 +00001368 return -ENOMEM;
1369}
1370
Alexander Duyck047e0032009-10-27 15:49:27 +00001371/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001372 * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors
1373 * @adapter: board private structure to initialize
1374 * @msix: boolean value of MSIX capability
Alexander Duyck047e0032009-10-27 15:49:27 +00001375 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001376 * This function initializes the interrupts and allocates all of the queues.
Alexander Duyck047e0032009-10-27 15:49:27 +00001377 **/
Stefan Assmann53c7d062012-12-04 06:00:12 +00001378static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix)
Alexander Duyck047e0032009-10-27 15:49:27 +00001379{
1380 struct pci_dev *pdev = adapter->pdev;
1381 int err;
1382
Stefan Assmann53c7d062012-12-04 06:00:12 +00001383 igb_set_interrupt_capability(adapter, msix);
Alexander Duyck047e0032009-10-27 15:49:27 +00001384
1385 err = igb_alloc_q_vectors(adapter);
1386 if (err) {
1387 dev_err(&pdev->dev, "Unable to allocate memory for vectors\n");
1388 goto err_alloc_q_vectors;
1389 }
1390
Alexander Duyck5536d212012-09-25 00:31:17 +00001391 igb_cache_ring_register(adapter);
Alexander Duyck047e0032009-10-27 15:49:27 +00001392
1393 return 0;
Alexander Duyck5536d212012-09-25 00:31:17 +00001394
Alexander Duyck047e0032009-10-27 15:49:27 +00001395err_alloc_q_vectors:
1396 igb_reset_interrupt_capability(adapter);
1397 return err;
1398}
1399
1400/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001401 * igb_request_irq - initialize interrupts
1402 * @adapter: board private structure to initialize
Auke Kok9d5c8242008-01-24 02:22:38 -08001403 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001404 * Attempts to configure interrupts using the best available
1405 * capabilities of the hardware and kernel.
Auke Kok9d5c8242008-01-24 02:22:38 -08001406 **/
1407static int igb_request_irq(struct igb_adapter *adapter)
1408{
1409 struct net_device *netdev = adapter->netdev;
Alexander Duyck047e0032009-10-27 15:49:27 +00001410 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08001411 int err = 0;
1412
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001413 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001414 err = igb_request_msix(adapter);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001415 if (!err)
Auke Kok9d5c8242008-01-24 02:22:38 -08001416 goto request_done;
Auke Kok9d5c8242008-01-24 02:22:38 -08001417 /* fall back to MSI */
Alexander Duyck5536d212012-09-25 00:31:17 +00001418 igb_free_all_tx_resources(adapter);
1419 igb_free_all_rx_resources(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001420
Alexander Duyck047e0032009-10-27 15:49:27 +00001421 igb_clear_interrupt_scheme(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001422 err = igb_init_interrupt_scheme(adapter, false);
1423 if (err)
Alexander Duyck047e0032009-10-27 15:49:27 +00001424 goto request_done;
Stefan Assmann53c7d062012-12-04 06:00:12 +00001425
Alexander Duyck047e0032009-10-27 15:49:27 +00001426 igb_setup_all_tx_resources(adapter);
1427 igb_setup_all_rx_resources(adapter);
Stefan Assmann53c7d062012-12-04 06:00:12 +00001428 igb_configure(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001429 }
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001430
Alexander Duyckc74d5882011-08-26 07:46:45 +00001431 igb_assign_vector(adapter->q_vector[0], 0);
1432
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001433 if (adapter->flags & IGB_FLAG_HAS_MSI) {
Alexander Duyckc74d5882011-08-26 07:46:45 +00001434 err = request_irq(pdev->irq, igb_intr_msi, 0,
Alexander Duyck047e0032009-10-27 15:49:27 +00001435 netdev->name, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001436 if (!err)
1437 goto request_done;
Alexander Duyck047e0032009-10-27 15:49:27 +00001438
Auke Kok9d5c8242008-01-24 02:22:38 -08001439 /* fall back to legacy interrupts */
1440 igb_reset_interrupt_capability(adapter);
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07001441 adapter->flags &= ~IGB_FLAG_HAS_MSI;
Auke Kok9d5c8242008-01-24 02:22:38 -08001442 }
1443
Alexander Duyckc74d5882011-08-26 07:46:45 +00001444 err = request_irq(pdev->irq, igb_intr, IRQF_SHARED,
Alexander Duyck047e0032009-10-27 15:49:27 +00001445 netdev->name, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001446
Andy Gospodarek6cb5e572008-02-15 14:05:25 -08001447 if (err)
Alexander Duyckc74d5882011-08-26 07:46:45 +00001448 dev_err(&pdev->dev, "Error %d getting interrupt\n",
Auke Kok9d5c8242008-01-24 02:22:38 -08001449 err);
Auke Kok9d5c8242008-01-24 02:22:38 -08001450
1451request_done:
1452 return err;
1453}
1454
1455static void igb_free_irq(struct igb_adapter *adapter)
1456{
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001457 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001458 int vector = 0, i;
1459
Alexander Duyck047e0032009-10-27 15:49:27 +00001460 free_irq(adapter->msix_entries[vector++].vector, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001461
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001462 for (i = 0; i < adapter->num_q_vectors; i++)
Alexander Duyck047e0032009-10-27 15:49:27 +00001463 free_irq(adapter->msix_entries[vector++].vector,
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001464 adapter->q_vector[i]);
Alexander Duyck047e0032009-10-27 15:49:27 +00001465 } else {
1466 free_irq(adapter->pdev->irq, adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001467 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001468}
1469
1470/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001471 * igb_irq_disable - Mask off interrupt generation on the NIC
1472 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001473 **/
1474static void igb_irq_disable(struct igb_adapter *adapter)
1475{
1476 struct e1000_hw *hw = &adapter->hw;
1477
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001478 /* we need to be careful when disabling interrupts. The VFs are also
Alexander Duyck25568a52009-10-27 23:49:59 +00001479 * mapped into these registers and so clearing the bits can cause
1480 * issues on the VF drivers so we only need to clear what we set
1481 */
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001482 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001483 u32 regval = rd32(E1000_EIAM);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001484
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001485 wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask);
1486 wr32(E1000_EIMC, adapter->eims_enable_mask);
1487 regval = rd32(E1000_EIAC);
1488 wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask);
Auke Kok9d5c8242008-01-24 02:22:38 -08001489 }
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001490
1491 wr32(E1000_IAM, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08001492 wr32(E1000_IMC, ~0);
1493 wrfl();
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001494 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Emil Tantilov81a61852010-08-02 14:40:52 +00001495 int i;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001496
Emil Tantilov81a61852010-08-02 14:40:52 +00001497 for (i = 0; i < adapter->num_q_vectors; i++)
1498 synchronize_irq(adapter->msix_entries[i].vector);
1499 } else {
1500 synchronize_irq(adapter->pdev->irq);
1501 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001502}
1503
1504/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001505 * igb_irq_enable - Enable default interrupt generation settings
1506 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001507 **/
1508static void igb_irq_enable(struct igb_adapter *adapter)
1509{
1510 struct e1000_hw *hw = &adapter->hw;
1511
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001512 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck06218a82011-08-26 07:46:55 +00001513 u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA;
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001514 u32 regval = rd32(E1000_EIAC);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001515
Alexander Duyck2dfd1212009-09-03 14:49:15 +00001516 wr32(E1000_EIAC, regval | adapter->eims_enable_mask);
1517 regval = rd32(E1000_EIAM);
1518 wr32(E1000_EIAM, regval | adapter->eims_enable_mask);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001519 wr32(E1000_EIMS, adapter->eims_enable_mask);
Alexander Duyck25568a52009-10-27 23:49:59 +00001520 if (adapter->vfs_allocated_count) {
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001521 wr32(E1000_MBVFIMR, 0xFF);
Alexander Duyck25568a52009-10-27 23:49:59 +00001522 ims |= E1000_IMS_VMMB;
1523 }
1524 wr32(E1000_IMS, ims);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001525 } else {
Alexander Duyck55cac242009-11-19 12:42:21 +00001526 wr32(E1000_IMS, IMS_ENABLE_MASK |
1527 E1000_IMS_DRSTA);
1528 wr32(E1000_IAM, IMS_ENABLE_MASK |
1529 E1000_IMS_DRSTA);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07001530 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001531}
1532
1533static void igb_update_mng_vlan(struct igb_adapter *adapter)
1534{
Alexander Duyck51466232009-10-27 23:47:35 +00001535 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08001536 u16 vid = adapter->hw.mng_cookie.vlan_id;
1537 u16 old_vid = adapter->mng_vlan_id;
Auke Kok9d5c8242008-01-24 02:22:38 -08001538
Alexander Duyck51466232009-10-27 23:47:35 +00001539 if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
1540 /* add VID to filter table */
1541 igb_vfta_set(hw, vid, true);
1542 adapter->mng_vlan_id = vid;
1543 } else {
1544 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
1545 }
1546
1547 if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
1548 (vid != old_vid) &&
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00001549 !test_bit(old_vid, adapter->active_vlans)) {
Alexander Duyck51466232009-10-27 23:47:35 +00001550 /* remove VID from filter table */
1551 igb_vfta_set(hw, old_vid, false);
Auke Kok9d5c8242008-01-24 02:22:38 -08001552 }
1553}
1554
1555/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001556 * igb_release_hw_control - release control of the h/w to f/w
1557 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001558 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001559 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
1560 * For ASF and Pass Through versions of f/w this means that the
1561 * driver is no longer loaded.
Auke Kok9d5c8242008-01-24 02:22:38 -08001562 **/
1563static void igb_release_hw_control(struct igb_adapter *adapter)
1564{
1565 struct e1000_hw *hw = &adapter->hw;
1566 u32 ctrl_ext;
1567
1568 /* Let firmware take over control of h/w */
1569 ctrl_ext = rd32(E1000_CTRL_EXT);
1570 wr32(E1000_CTRL_EXT,
1571 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1572}
1573
Auke Kok9d5c8242008-01-24 02:22:38 -08001574/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001575 * igb_get_hw_control - get control of the h/w from f/w
1576 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001577 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001578 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
1579 * For ASF and Pass Through versions of f/w this means that
1580 * the driver is loaded.
Auke Kok9d5c8242008-01-24 02:22:38 -08001581 **/
1582static void igb_get_hw_control(struct igb_adapter *adapter)
1583{
1584 struct e1000_hw *hw = &adapter->hw;
1585 u32 ctrl_ext;
1586
1587 /* Let firmware know the driver has taken over */
1588 ctrl_ext = rd32(E1000_CTRL_EXT);
1589 wr32(E1000_CTRL_EXT,
1590 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1591}
1592
Auke Kok9d5c8242008-01-24 02:22:38 -08001593/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001594 * igb_configure - configure the hardware for RX and TX
1595 * @adapter: private board structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001596 **/
1597static void igb_configure(struct igb_adapter *adapter)
1598{
1599 struct net_device *netdev = adapter->netdev;
1600 int i;
1601
1602 igb_get_hw_control(adapter);
Alexander Duyckff41f8d2009-09-03 14:48:56 +00001603 igb_set_rx_mode(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08001604
1605 igb_restore_vlan(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001606
Alexander Duyck85b430b2009-10-27 15:50:29 +00001607 igb_setup_tctl(adapter);
Alexander Duyck06cf2662009-10-27 15:53:25 +00001608 igb_setup_mrqc(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001609 igb_setup_rctl(adapter);
Alexander Duyck85b430b2009-10-27 15:50:29 +00001610
1611 igb_configure_tx(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001612 igb_configure_rx(adapter);
Alexander Duyck662d7202008-06-27 11:00:29 -07001613
1614 igb_rx_fifo_flush_82575(&adapter->hw);
1615
Alexander Duyckc493ea42009-03-20 00:16:50 +00001616 /* call igb_desc_unused which always leaves
Auke Kok9d5c8242008-01-24 02:22:38 -08001617 * at least 1 descriptor unused to make sure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001618 * next_to_use != next_to_clean
1619 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001620 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00001621 struct igb_ring *ring = adapter->rx_ring[i];
Alexander Duyckcd392f52011-08-26 07:43:59 +00001622 igb_alloc_rx_buffers(ring, igb_desc_unused(ring));
Auke Kok9d5c8242008-01-24 02:22:38 -08001623 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001624}
1625
Nick Nunley88a268c2010-02-17 01:01:59 +00001626/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001627 * igb_power_up_link - Power up the phy/serdes link
1628 * @adapter: address of board private structure
Nick Nunley88a268c2010-02-17 01:01:59 +00001629 **/
1630void igb_power_up_link(struct igb_adapter *adapter)
1631{
Akeem G. Abodunrin76886592012-07-17 04:51:18 +00001632 igb_reset_phy(&adapter->hw);
1633
Nick Nunley88a268c2010-02-17 01:01:59 +00001634 if (adapter->hw.phy.media_type == e1000_media_type_copper)
1635 igb_power_up_phy_copper(&adapter->hw);
1636 else
1637 igb_power_up_serdes_link_82575(&adapter->hw);
Todd Fujinakaaec653c2014-06-17 06:58:11 +00001638
1639 igb_setup_link(&adapter->hw);
Nick Nunley88a268c2010-02-17 01:01:59 +00001640}
1641
1642/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001643 * igb_power_down_link - Power down the phy/serdes link
1644 * @adapter: address of board private structure
Nick Nunley88a268c2010-02-17 01:01:59 +00001645 */
1646static void igb_power_down_link(struct igb_adapter *adapter)
1647{
1648 if (adapter->hw.phy.media_type == e1000_media_type_copper)
1649 igb_power_down_phy_copper_82575(&adapter->hw);
1650 else
1651 igb_shutdown_serdes_link_82575(&adapter->hw);
1652}
Auke Kok9d5c8242008-01-24 02:22:38 -08001653
1654/**
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001655 * Detect and switch function for Media Auto Sense
1656 * @adapter: address of the board private structure
1657 **/
1658static void igb_check_swap_media(struct igb_adapter *adapter)
1659{
1660 struct e1000_hw *hw = &adapter->hw;
1661 u32 ctrl_ext, connsw;
1662 bool swap_now = false;
1663
1664 ctrl_ext = rd32(E1000_CTRL_EXT);
1665 connsw = rd32(E1000_CONNSW);
1666
1667 /* need to live swap if current media is copper and we have fiber/serdes
1668 * to go to.
1669 */
1670
1671 if ((hw->phy.media_type == e1000_media_type_copper) &&
1672 (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) {
1673 swap_now = true;
1674 } else if (!(connsw & E1000_CONNSW_SERDESD)) {
1675 /* copper signal takes time to appear */
1676 if (adapter->copper_tries < 4) {
1677 adapter->copper_tries++;
1678 connsw |= E1000_CONNSW_AUTOSENSE_CONF;
1679 wr32(E1000_CONNSW, connsw);
1680 return;
1681 } else {
1682 adapter->copper_tries = 0;
1683 if ((connsw & E1000_CONNSW_PHYSD) &&
1684 (!(connsw & E1000_CONNSW_PHY_PDN))) {
1685 swap_now = true;
1686 connsw &= ~E1000_CONNSW_AUTOSENSE_CONF;
1687 wr32(E1000_CONNSW, connsw);
1688 }
1689 }
1690 }
1691
1692 if (!swap_now)
1693 return;
1694
1695 switch (hw->phy.media_type) {
1696 case e1000_media_type_copper:
1697 netdev_info(adapter->netdev,
1698 "MAS: changing media to fiber/serdes\n");
1699 ctrl_ext |=
1700 E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1701 adapter->flags |= IGB_FLAG_MEDIA_RESET;
1702 adapter->copper_tries = 0;
1703 break;
1704 case e1000_media_type_internal_serdes:
1705 case e1000_media_type_fiber:
1706 netdev_info(adapter->netdev,
1707 "MAS: changing media to copper\n");
1708 ctrl_ext &=
1709 ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1710 adapter->flags |= IGB_FLAG_MEDIA_RESET;
1711 break;
1712 default:
1713 /* shouldn't get here during regular operation */
1714 netdev_err(adapter->netdev,
1715 "AMS: Invalid media type found, returning\n");
1716 break;
1717 }
1718 wr32(E1000_CTRL_EXT, ctrl_ext);
1719}
1720
1721/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001722 * igb_up - Open the interface and prepare it to handle traffic
1723 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08001724 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08001725int igb_up(struct igb_adapter *adapter)
1726{
1727 struct e1000_hw *hw = &adapter->hw;
1728 int i;
1729
1730 /* hardware has been reset, we need to reload some things */
1731 igb_configure(adapter);
1732
1733 clear_bit(__IGB_DOWN, &adapter->state);
1734
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00001735 for (i = 0; i < adapter->num_q_vectors; i++)
1736 napi_enable(&(adapter->q_vector[i]->napi));
1737
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00001738 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Auke Kok9d5c8242008-01-24 02:22:38 -08001739 igb_configure_msix(adapter);
Alexander Duyckfeeb2722010-02-03 21:59:51 +00001740 else
1741 igb_assign_vector(adapter->q_vector[0], 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08001742
1743 /* Clear any pending interrupts. */
1744 rd32(E1000_ICR);
1745 igb_irq_enable(adapter);
1746
Alexander Duyckd4960302009-10-27 15:53:45 +00001747 /* notify VFs that reset has been completed */
1748 if (adapter->vfs_allocated_count) {
1749 u32 reg_data = rd32(E1000_CTRL_EXT);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001750
Alexander Duyckd4960302009-10-27 15:53:45 +00001751 reg_data |= E1000_CTRL_EXT_PFRSTD;
1752 wr32(E1000_CTRL_EXT, reg_data);
1753 }
1754
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00001755 netif_tx_start_all_queues(adapter->netdev);
1756
Alexander Duyck25568a52009-10-27 23:49:59 +00001757 /* start the watchdog. */
1758 hw->mac.get_link_status = 1;
1759 schedule_work(&adapter->watchdog_task);
1760
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00001761 if ((adapter->flags & IGB_FLAG_EEE) &&
1762 (!hw->dev_spec._82575.eee_disable))
1763 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
1764
Auke Kok9d5c8242008-01-24 02:22:38 -08001765 return 0;
1766}
1767
1768void igb_down(struct igb_adapter *adapter)
1769{
Auke Kok9d5c8242008-01-24 02:22:38 -08001770 struct net_device *netdev = adapter->netdev;
Alexander Duyck330a6d62009-10-27 23:51:35 +00001771 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08001772 u32 tctl, rctl;
1773 int i;
1774
1775 /* signal that we're down so the interrupt handler does not
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001776 * reschedule our watchdog timer
1777 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001778 set_bit(__IGB_DOWN, &adapter->state);
1779
1780 /* disable receives in the hardware */
1781 rctl = rd32(E1000_RCTL);
1782 wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
1783 /* flush and sleep below */
1784
Todd Fujinakaf28ea082015-03-20 17:41:53 -07001785 netif_carrier_off(netdev);
David S. Millerfd2ea0a2008-07-17 01:56:23 -07001786 netif_tx_stop_all_queues(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08001787
1788 /* disable transmits in the hardware */
1789 tctl = rd32(E1000_TCTL);
1790 tctl &= ~E1000_TCTL_EN;
1791 wr32(E1000_TCTL, tctl);
1792 /* flush both disables and wait for them to finish */
1793 wrfl();
Carolyn Wyborny0d451e72014-04-11 01:46:40 +00001794 usleep_range(10000, 11000);
Auke Kok9d5c8242008-01-24 02:22:38 -08001795
Auke Kok9d5c8242008-01-24 02:22:38 -08001796 igb_irq_disable(adapter);
1797
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00001798 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
1799
Carolyn Wyborny41f149a2013-04-30 00:21:32 +00001800 for (i = 0; i < adapter->num_q_vectors; i++) {
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08001801 if (adapter->q_vector[i]) {
1802 napi_synchronize(&adapter->q_vector[i]->napi);
1803 napi_disable(&adapter->q_vector[i]->napi);
1804 }
Carolyn Wyborny41f149a2013-04-30 00:21:32 +00001805 }
1806
Auke Kok9d5c8242008-01-24 02:22:38 -08001807 del_timer_sync(&adapter->watchdog_timer);
1808 del_timer_sync(&adapter->phy_info_timer);
1809
Alexander Duyck04fe6352009-02-06 23:22:32 +00001810 /* record the stats before reset*/
Eric Dumazet12dcd862010-10-15 17:27:10 +00001811 spin_lock(&adapter->stats64_lock);
1812 igb_update_stats(adapter, &adapter->stats64);
1813 spin_unlock(&adapter->stats64_lock);
Alexander Duyck04fe6352009-02-06 23:22:32 +00001814
Auke Kok9d5c8242008-01-24 02:22:38 -08001815 adapter->link_speed = 0;
1816 adapter->link_duplex = 0;
1817
Jeff Kirsher30236822008-06-24 17:01:15 -07001818 if (!pci_channel_offline(adapter->pdev))
1819 igb_reset(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08001820 igb_clean_all_tx_rings(adapter);
1821 igb_clean_all_rx_rings(adapter);
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00001822#ifdef CONFIG_IGB_DCA
1823
1824 /* since we reset the hardware DCA settings were cleared */
1825 igb_setup_dca(adapter);
1826#endif
Auke Kok9d5c8242008-01-24 02:22:38 -08001827}
1828
1829void igb_reinit_locked(struct igb_adapter *adapter)
1830{
1831 WARN_ON(in_interrupt());
1832 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
Carolyn Wyborny0d451e72014-04-11 01:46:40 +00001833 usleep_range(1000, 2000);
Auke Kok9d5c8242008-01-24 02:22:38 -08001834 igb_down(adapter);
1835 igb_up(adapter);
1836 clear_bit(__IGB_RESETTING, &adapter->state);
1837}
1838
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001839/** igb_enable_mas - Media Autosense re-enable after swap
1840 *
1841 * @adapter: adapter struct
1842 **/
Todd Fujinaka8cfb8792015-05-02 00:39:03 -07001843static void igb_enable_mas(struct igb_adapter *adapter)
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001844{
1845 struct e1000_hw *hw = &adapter->hw;
Todd Fujinaka8cfb8792015-05-02 00:39:03 -07001846 u32 connsw = rd32(E1000_CONNSW);
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001847
1848 /* configure for SerDes media detect */
Todd Fujinaka8cfb8792015-05-02 00:39:03 -07001849 if ((hw->phy.media_type == e1000_media_type_copper) &&
1850 (!(connsw & E1000_CONNSW_SERDESD))) {
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001851 connsw |= E1000_CONNSW_ENRGSRC;
1852 connsw |= E1000_CONNSW_AUTOSENSE_EN;
1853 wr32(E1000_CONNSW, connsw);
1854 wrfl();
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001855 }
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001856}
1857
Auke Kok9d5c8242008-01-24 02:22:38 -08001858void igb_reset(struct igb_adapter *adapter)
1859{
Alexander Duyck090b1792009-10-27 23:51:55 +00001860 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08001861 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck2d064c02008-07-08 15:10:12 -07001862 struct e1000_mac_info *mac = &hw->mac;
1863 struct e1000_fc_info *fc = &hw->fc;
Matthew Vickd48507f2012-11-08 04:03:58 +00001864 u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm;
Auke Kok9d5c8242008-01-24 02:22:38 -08001865
1866 /* Repartition Pba for greater than 9k mtu
1867 * To take effect CTRL.RST is required.
1868 */
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001869 switch (mac->type) {
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +00001870 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00001871 case e1000_i354:
Alexander Duyck55cac242009-11-19 12:42:21 +00001872 case e1000_82580:
1873 pba = rd32(E1000_RXPBS);
1874 pba = igb_rxpbs_adjust_82580(pba);
1875 break;
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001876 case e1000_82576:
Alexander Duyckd249be52009-10-27 23:46:38 +00001877 pba = rd32(E1000_RXPBS);
1878 pba &= E1000_RXPBS_SIZE_MASK_82576;
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001879 break;
1880 case e1000_82575:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00001881 case e1000_i210:
1882 case e1000_i211:
Alexander Duyckfa4dfae2009-02-06 23:21:31 +00001883 default:
1884 pba = E1000_PBA_34K;
1885 break;
Alexander Duyck2d064c02008-07-08 15:10:12 -07001886 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001887
Alexander Duyck2d064c02008-07-08 15:10:12 -07001888 if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) &&
1889 (mac->type < e1000_82576)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08001890 /* adjust PBA for jumbo frames */
1891 wr32(E1000_PBA, pba);
1892
1893 /* To maintain wire speed transmits, the Tx FIFO should be
1894 * large enough to accommodate two full transmit packets,
1895 * rounded up to the next 1KB and expressed in KB. Likewise,
1896 * the Rx FIFO should be large enough to accommodate at least
1897 * one full receive packet and is similarly rounded up and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001898 * expressed in KB.
1899 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001900 pba = rd32(E1000_PBA);
1901 /* upper 16 bits has Tx packet buffer allocation size in KB */
1902 tx_space = pba >> 16;
1903 /* lower 16 bits has Rx packet buffer allocation size in KB */
1904 pba &= 0xffff;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001905 /* the Tx fifo also stores 16 bytes of information about the Tx
1906 * but don't include ethernet FCS because hardware appends it
1907 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001908 min_tx_space = (adapter->max_frame_size +
Alexander Duyck85e8d002009-02-16 00:00:20 -08001909 sizeof(union e1000_adv_tx_desc) -
Auke Kok9d5c8242008-01-24 02:22:38 -08001910 ETH_FCS_LEN) * 2;
1911 min_tx_space = ALIGN(min_tx_space, 1024);
1912 min_tx_space >>= 10;
1913 /* software strips receive CRC, so leave room for it */
1914 min_rx_space = adapter->max_frame_size;
1915 min_rx_space = ALIGN(min_rx_space, 1024);
1916 min_rx_space >>= 10;
1917
1918 /* If current Tx allocation is less than the min Tx FIFO size,
1919 * and the min Tx FIFO size is less than the current Rx FIFO
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001920 * allocation, take space away from current Rx allocation
1921 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001922 if (tx_space < min_tx_space &&
1923 ((min_tx_space - tx_space) < pba)) {
1924 pba = pba - (min_tx_space - tx_space);
1925
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001926 /* if short on Rx space, Rx wins and must trump Tx
1927 * adjustment
1928 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001929 if (pba < min_rx_space)
1930 pba = min_rx_space;
1931 }
Alexander Duyck2d064c02008-07-08 15:10:12 -07001932 wr32(E1000_PBA, pba);
Auke Kok9d5c8242008-01-24 02:22:38 -08001933 }
Auke Kok9d5c8242008-01-24 02:22:38 -08001934
1935 /* flow control settings */
1936 /* The high water mark must be low enough to fit one full frame
1937 * (or the size used for early receive) above it in the Rx FIFO.
1938 * Set it to the lower of:
1939 * - 90% of the Rx FIFO size, or
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001940 * - the full Rx FIFO size minus one full frame
1941 */
Auke Kok9d5c8242008-01-24 02:22:38 -08001942 hwm = min(((pba << 10) * 9 / 10),
Alexander Duyck2d064c02008-07-08 15:10:12 -07001943 ((pba << 10) - 2 * adapter->max_frame_size));
Auke Kok9d5c8242008-01-24 02:22:38 -08001944
Matthew Vickd48507f2012-11-08 04:03:58 +00001945 fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */
Alexander Duyckd405ea32009-12-23 13:21:27 +00001946 fc->low_water = fc->high_water - 16;
Auke Kok9d5c8242008-01-24 02:22:38 -08001947 fc->pause_time = 0xFFFF;
1948 fc->send_xon = 1;
Alexander Duyck0cce1192009-07-23 18:10:24 +00001949 fc->current_mode = fc->requested_mode;
Auke Kok9d5c8242008-01-24 02:22:38 -08001950
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001951 /* disable receive for all VFs and wait one second */
1952 if (adapter->vfs_allocated_count) {
1953 int i;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00001954
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001955 for (i = 0 ; i < adapter->vfs_allocated_count; i++)
Greg Rose8fa7e0f2010-11-06 05:43:21 +00001956 adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001957
1958 /* ping all the active vfs to let them know we are going down */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00001959 igb_ping_all_vfs(adapter);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08001960
1961 /* disable transmits and receives */
1962 wr32(E1000_VFRE, 0);
1963 wr32(E1000_VFTE, 0);
1964 }
1965
Auke Kok9d5c8242008-01-24 02:22:38 -08001966 /* Allow time for pending master requests to run */
Alexander Duyck330a6d62009-10-27 23:51:35 +00001967 hw->mac.ops.reset_hw(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08001968 wr32(E1000_WUC, 0);
1969
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001970 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
1971 /* need to resetup here after media swap */
1972 adapter->ei.get_invariants(hw);
1973 adapter->flags &= ~IGB_FLAG_MEDIA_RESET;
1974 }
Todd Fujinaka8cfb8792015-05-02 00:39:03 -07001975 if ((mac->type == e1000_82575) &&
1976 (adapter->flags & IGB_FLAG_MAS_ENABLE)) {
1977 igb_enable_mas(adapter);
Carolyn Wyborny56cec242013-10-17 05:36:26 +00001978 }
Alexander Duyck330a6d62009-10-27 23:51:35 +00001979 if (hw->mac.ops.init_hw(hw))
Alexander Duyck090b1792009-10-27 23:51:55 +00001980 dev_err(&pdev->dev, "Hardware Error\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08001981
Jeff Kirsherb980ac12013-02-23 07:29:56 +00001982 /* Flow control settings reset on hardware reset, so guarantee flow
Matthew Vicka27416b2012-04-18 02:57:44 +00001983 * control is off when forcing speed.
1984 */
1985 if (!hw->mac.autoneg)
1986 igb_force_mac_fc(hw);
1987
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00001988 igb_init_dmac(adapter, pba);
Carolyn Wybornye4288932012-12-07 03:01:42 +00001989#ifdef CONFIG_IGB_HWMON
1990 /* Re-initialize the thermal sensor on i350 devices. */
1991 if (!test_bit(__IGB_DOWN, &adapter->state)) {
1992 if (mac->type == e1000_i350 && hw->bus.func == 0) {
1993 /* If present, re-initialize the external thermal sensor
1994 * interface.
1995 */
1996 if (adapter->ets)
1997 mac->ops.init_thermal_sensor_thresh(hw);
1998 }
1999 }
2000#endif
Jeff Kirsherb9361362014-03-13 16:07:14 -07002001 /* Re-establish EEE setting */
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002002 if (hw->phy.media_type == e1000_media_type_copper) {
2003 switch (mac->type) {
2004 case e1000_i350:
2005 case e1000_i210:
2006 case e1000_i211:
Todd Fujinakac4c112f2014-08-29 06:43:13 +00002007 igb_set_eee_i350(hw, true, true);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002008 break;
2009 case e1000_i354:
Todd Fujinakac4c112f2014-08-29 06:43:13 +00002010 igb_set_eee_i354(hw, true, true);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002011 break;
2012 default:
2013 break;
2014 }
2015 }
Nick Nunley88a268c2010-02-17 01:01:59 +00002016 if (!netif_running(adapter->netdev))
2017 igb_power_down_link(adapter);
2018
Auke Kok9d5c8242008-01-24 02:22:38 -08002019 igb_update_mng_vlan(adapter);
2020
2021 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2022 wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
2023
Matthew Vick1f6e8172012-08-18 07:26:33 +00002024 /* Re-enable PTP, where applicable. */
2025 igb_ptp_reset(adapter);
Matthew Vick1f6e8172012-08-18 07:26:33 +00002026
Alexander Duyck330a6d62009-10-27 23:51:35 +00002027 igb_get_phy_info(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002028}
2029
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002030static netdev_features_t igb_fix_features(struct net_device *netdev,
2031 netdev_features_t features)
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002032{
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002033 /* Since there is no support for separate Rx/Tx vlan accel
2034 * enable/disable make sure Tx flag is always in same state as Rx.
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002035 */
Patrick McHardyf6469682013-04-19 02:04:27 +00002036 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2037 features |= NETIF_F_HW_VLAN_CTAG_TX;
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002038 else
Patrick McHardyf6469682013-04-19 02:04:27 +00002039 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002040
2041 return features;
2042}
2043
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002044static int igb_set_features(struct net_device *netdev,
2045 netdev_features_t features)
Michał Mirosławac52caa2011-06-08 08:38:01 +00002046{
Michał Mirosławc8f44af2011-11-15 15:29:55 +00002047 netdev_features_t changed = netdev->features ^ features;
Ben Greear89eaefb2012-03-06 09:41:58 +00002048 struct igb_adapter *adapter = netdev_priv(netdev);
Michał Mirosławac52caa2011-06-08 08:38:01 +00002049
Patrick McHardyf6469682013-04-19 02:04:27 +00002050 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002051 igb_vlan_mode(netdev, features);
2052
Ben Greear89eaefb2012-03-06 09:41:58 +00002053 if (!(changed & NETIF_F_RXALL))
2054 return 0;
2055
2056 netdev->features = features;
2057
2058 if (netif_running(netdev))
2059 igb_reinit_locked(adapter);
2060 else
2061 igb_reset(adapter);
2062
Michał Mirosławac52caa2011-06-08 08:38:01 +00002063 return 0;
2064}
2065
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002066static const struct net_device_ops igb_netdev_ops = {
Alexander Duyck559e9c42009-10-27 23:52:50 +00002067 .ndo_open = igb_open,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002068 .ndo_stop = igb_close,
Alexander Duyckcd392f52011-08-26 07:43:59 +00002069 .ndo_start_xmit = igb_xmit_frame,
Eric Dumazet12dcd862010-10-15 17:27:10 +00002070 .ndo_get_stats64 = igb_get_stats64,
Alexander Duyckff41f8d2009-09-03 14:48:56 +00002071 .ndo_set_rx_mode = igb_set_rx_mode,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002072 .ndo_set_mac_address = igb_set_mac,
2073 .ndo_change_mtu = igb_change_mtu,
2074 .ndo_do_ioctl = igb_ioctl,
2075 .ndo_tx_timeout = igb_tx_timeout,
2076 .ndo_validate_addr = eth_validate_addr,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002077 .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid,
2078 .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid,
Williams, Mitch A8151d292010-02-10 01:44:24 +00002079 .ndo_set_vf_mac = igb_ndo_set_vf_mac,
2080 .ndo_set_vf_vlan = igb_ndo_set_vf_vlan,
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04002081 .ndo_set_vf_rate = igb_ndo_set_vf_bw,
Lior Levy70ea4782013-03-03 20:27:48 +00002082 .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk,
Williams, Mitch A8151d292010-02-10 01:44:24 +00002083 .ndo_get_vf_config = igb_ndo_get_vf_config,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002084#ifdef CONFIG_NET_POLL_CONTROLLER
2085 .ndo_poll_controller = igb_netpoll,
2086#endif
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00002087 .ndo_fix_features = igb_fix_features,
2088 .ndo_set_features = igb_set_features,
Toshiaki Makita1abbc982015-03-27 14:31:16 +09002089 .ndo_features_check = passthru_features_check,
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002090};
2091
Taku Izumi42bfd33a2008-06-20 12:10:30 +09002092/**
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002093 * igb_set_fw_version - Configure version string for ethtool
2094 * @adapter: adapter struct
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002095 **/
2096void igb_set_fw_version(struct igb_adapter *adapter)
2097{
2098 struct e1000_hw *hw = &adapter->hw;
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002099 struct e1000_fw_version fw;
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002100
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002101 igb_get_fw_version(hw, &fw);
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002102
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002103 switch (hw->mac.type) {
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002104 case e1000_i210:
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002105 case e1000_i211:
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002106 if (!(igb_get_flash_presence_i210(hw))) {
2107 snprintf(adapter->fw_version,
2108 sizeof(adapter->fw_version),
2109 "%2d.%2d-%d",
2110 fw.invm_major, fw.invm_minor,
2111 fw.invm_img_type);
2112 break;
2113 }
2114 /* fall through */
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002115 default:
2116 /* if option is rom valid, display its version too */
2117 if (fw.or_valid) {
2118 snprintf(adapter->fw_version,
2119 sizeof(adapter->fw_version),
2120 "%d.%d, 0x%08x, %d.%d.%d",
2121 fw.eep_major, fw.eep_minor, fw.etrack_id,
2122 fw.or_major, fw.or_build, fw.or_patch);
2123 /* no option rom */
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002124 } else if (fw.etrack_id != 0X0000) {
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002125 snprintf(adapter->fw_version,
Carolyn Wyborny7dc98a62013-07-16 19:25:33 +00002126 sizeof(adapter->fw_version),
2127 "%d.%d, 0x%08x",
2128 fw.eep_major, fw.eep_minor, fw.etrack_id);
2129 } else {
2130 snprintf(adapter->fw_version,
2131 sizeof(adapter->fw_version),
2132 "%d.%d.%d",
2133 fw.eep_major, fw.eep_minor, fw.eep_build);
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002134 }
Carolyn Wyborny0b1a6f22012-10-18 07:16:19 +00002135 break;
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002136 }
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002137}
2138
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002139/**
Carolyn Wyborny56cec242013-10-17 05:36:26 +00002140 * igb_init_mas - init Media Autosense feature if enabled in the NVM
2141 *
2142 * @adapter: adapter struct
2143 **/
2144static void igb_init_mas(struct igb_adapter *adapter)
2145{
2146 struct e1000_hw *hw = &adapter->hw;
2147 u16 eeprom_data;
2148
2149 hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data);
2150 switch (hw->bus.func) {
2151 case E1000_FUNC_0:
2152 if (eeprom_data & IGB_MAS_ENABLE_0) {
2153 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2154 netdev_info(adapter->netdev,
2155 "MAS: Enabling Media Autosense for port %d\n",
2156 hw->bus.func);
2157 }
2158 break;
2159 case E1000_FUNC_1:
2160 if (eeprom_data & IGB_MAS_ENABLE_1) {
2161 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2162 netdev_info(adapter->netdev,
2163 "MAS: Enabling Media Autosense for port %d\n",
2164 hw->bus.func);
2165 }
2166 break;
2167 case E1000_FUNC_2:
2168 if (eeprom_data & IGB_MAS_ENABLE_2) {
2169 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2170 netdev_info(adapter->netdev,
2171 "MAS: Enabling Media Autosense for port %d\n",
2172 hw->bus.func);
2173 }
2174 break;
2175 case E1000_FUNC_3:
2176 if (eeprom_data & IGB_MAS_ENABLE_3) {
2177 adapter->flags |= IGB_FLAG_MAS_ENABLE;
2178 netdev_info(adapter->netdev,
2179 "MAS: Enabling Media Autosense for port %d\n",
2180 hw->bus.func);
2181 }
2182 break;
2183 default:
2184 /* Shouldn't get here */
2185 netdev_err(adapter->netdev,
2186 "MAS: Invalid port configuration, returning\n");
2187 break;
2188 }
2189}
2190
2191/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002192 * igb_init_i2c - Init I2C interface
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002193 * @adapter: pointer to adapter structure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002194 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002195static s32 igb_init_i2c(struct igb_adapter *adapter)
2196{
Todd Fujinaka23d87822014-06-04 07:12:15 +00002197 s32 status = 0;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002198
2199 /* I2C interface supported on i350 devices */
2200 if (adapter->hw.mac.type != e1000_i350)
Todd Fujinaka23d87822014-06-04 07:12:15 +00002201 return 0;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002202
2203 /* Initialize the i2c bus which is controlled by the registers.
2204 * This bus will use the i2c_algo_bit structue that implements
2205 * the protocol through toggling of the 4 bits in the register.
2206 */
2207 adapter->i2c_adap.owner = THIS_MODULE;
2208 adapter->i2c_algo = igb_i2c_algo;
2209 adapter->i2c_algo.data = adapter;
2210 adapter->i2c_adap.algo_data = &adapter->i2c_algo;
2211 adapter->i2c_adap.dev.parent = &adapter->pdev->dev;
2212 strlcpy(adapter->i2c_adap.name, "igb BB",
2213 sizeof(adapter->i2c_adap.name));
2214 status = i2c_bit_add_bus(&adapter->i2c_adap);
2215 return status;
2216}
2217
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002218/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002219 * igb_probe - Device Initialization Routine
2220 * @pdev: PCI device information struct
2221 * @ent: entry in igb_pci_tbl
Auke Kok9d5c8242008-01-24 02:22:38 -08002222 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002223 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08002224 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002225 * igb_probe initializes an adapter identified by a pci_dev structure.
2226 * The OS initialization, configuring of the adapter private structure,
2227 * and a hardware reset occur.
Auke Kok9d5c8242008-01-24 02:22:38 -08002228 **/
Greg Kroah-Hartman1dd06ae2012-12-06 14:30:56 +00002229static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Auke Kok9d5c8242008-01-24 02:22:38 -08002230{
2231 struct net_device *netdev;
2232 struct igb_adapter *adapter;
2233 struct e1000_hw *hw;
Alexander Duyck4337e992009-10-27 23:48:31 +00002234 u16 eeprom_data = 0;
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002235 s32 ret_val;
Alexander Duyck4337e992009-10-27 23:48:31 +00002236 static int global_quad_port_a; /* global quad port a indication */
Auke Kok9d5c8242008-01-24 02:22:38 -08002237 const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
David S. Miller2d6a5e92009-03-17 15:01:30 -07002238 int err, pci_using_dac;
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002239 u8 part_str[E1000_PBANUM_LENGTH];
Auke Kok9d5c8242008-01-24 02:22:38 -08002240
Andy Gospodarekbded64a2010-07-21 06:40:31 +00002241 /* Catch broken hardware that put the wrong VF device ID in
2242 * the PCIe SR-IOV capability.
2243 */
2244 if (pdev->is_virtfn) {
2245 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002246 pci_name(pdev), pdev->vendor, pdev->device);
Andy Gospodarekbded64a2010-07-21 06:40:31 +00002247 return -EINVAL;
2248 }
2249
Alexander Duyckaed5dec2009-02-06 23:16:04 +00002250 err = pci_enable_device_mem(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002251 if (err)
2252 return err;
2253
2254 pci_using_dac = 0;
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002255 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
Auke Kok9d5c8242008-01-24 02:22:38 -08002256 if (!err) {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002257 pci_using_dac = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08002258 } else {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002259 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
Auke Kok9d5c8242008-01-24 02:22:38 -08002260 if (err) {
Russell Kingdc4ff9b2013-06-10 12:24:50 +01002261 dev_err(&pdev->dev,
2262 "No usable DMA configuration, aborting\n");
2263 goto err_dma;
Auke Kok9d5c8242008-01-24 02:22:38 -08002264 }
2265 }
2266
Alexander Duyckaed5dec2009-02-06 23:16:04 +00002267 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002268 IORESOURCE_MEM),
2269 igb_driver_name);
Auke Kok9d5c8242008-01-24 02:22:38 -08002270 if (err)
2271 goto err_pci_reg;
2272
Frans Pop19d5afd2009-10-02 10:04:12 -07002273 pci_enable_pcie_error_reporting(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08002274
Auke Kok9d5c8242008-01-24 02:22:38 -08002275 pci_set_master(pdev);
Auke Kokc682fc22008-04-23 11:09:34 -07002276 pci_save_state(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002277
2278 err = -ENOMEM;
Alexander Duyck1bfaf072009-02-19 20:39:23 -08002279 netdev = alloc_etherdev_mq(sizeof(struct igb_adapter),
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00002280 IGB_MAX_TX_QUEUES);
Auke Kok9d5c8242008-01-24 02:22:38 -08002281 if (!netdev)
2282 goto err_alloc_etherdev;
2283
2284 SET_NETDEV_DEV(netdev, &pdev->dev);
2285
2286 pci_set_drvdata(pdev, netdev);
2287 adapter = netdev_priv(netdev);
2288 adapter->netdev = netdev;
2289 adapter->pdev = pdev;
2290 hw = &adapter->hw;
2291 hw->back = adapter;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00002292 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kok9d5c8242008-01-24 02:22:38 -08002293
Auke Kok9d5c8242008-01-24 02:22:38 -08002294 err = -EIO;
Aaron Sierra89dbefb2013-10-31 00:32:34 +00002295 hw->hw_addr = pci_iomap(pdev, 0, 0);
Alexander Duyck28b07592009-02-06 23:20:31 +00002296 if (!hw->hw_addr)
Auke Kok9d5c8242008-01-24 02:22:38 -08002297 goto err_ioremap;
2298
Stephen Hemminger2e5c6922008-11-19 22:20:44 -08002299 netdev->netdev_ops = &igb_netdev_ops;
Auke Kok9d5c8242008-01-24 02:22:38 -08002300 igb_set_ethtool_ops(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002301 netdev->watchdog_timeo = 5 * HZ;
Auke Kok9d5c8242008-01-24 02:22:38 -08002302
2303 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
2304
Aaron Sierra89dbefb2013-10-31 00:32:34 +00002305 netdev->mem_start = pci_resource_start(pdev, 0);
2306 netdev->mem_end = pci_resource_end(pdev, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08002307
Auke Kok9d5c8242008-01-24 02:22:38 -08002308 /* PCI config space info */
2309 hw->vendor_id = pdev->vendor;
2310 hw->device_id = pdev->device;
2311 hw->revision_id = pdev->revision;
2312 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2313 hw->subsystem_device_id = pdev->subsystem_device;
2314
Auke Kok9d5c8242008-01-24 02:22:38 -08002315 /* Copy the default MAC, PHY and NVM function pointers */
2316 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
2317 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
2318 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
2319 /* Initialize skew-specific constants */
2320 err = ei->get_invariants(hw);
2321 if (err)
Alexander Duyck450c87c2009-02-06 23:22:11 +00002322 goto err_sw_init;
Auke Kok9d5c8242008-01-24 02:22:38 -08002323
Alexander Duyck450c87c2009-02-06 23:22:11 +00002324 /* setup the private structure */
Auke Kok9d5c8242008-01-24 02:22:38 -08002325 err = igb_sw_init(adapter);
2326 if (err)
2327 goto err_sw_init;
2328
2329 igb_get_bus_info_pcie(hw);
2330
2331 hw->phy.autoneg_wait_to_complete = false;
Auke Kok9d5c8242008-01-24 02:22:38 -08002332
2333 /* Copper options */
2334 if (hw->phy.media_type == e1000_media_type_copper) {
2335 hw->phy.mdix = AUTO_ALL_MODES;
2336 hw->phy.disable_polarity_correction = false;
2337 hw->phy.ms_type = e1000_ms_hw_default;
2338 }
2339
2340 if (igb_check_reset_block(hw))
2341 dev_info(&pdev->dev,
2342 "PHY reset is blocked due to SOL/IDER session.\n");
2343
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002344 /* features is initialized to 0 in allocation, it might have bits
Alexander Duyck077887c2011-08-26 07:46:29 +00002345 * set by igb_sw_init so we should use an or instead of an
2346 * assignment.
2347 */
2348 netdev->features |= NETIF_F_SG |
2349 NETIF_F_IP_CSUM |
2350 NETIF_F_IPV6_CSUM |
2351 NETIF_F_TSO |
2352 NETIF_F_TSO6 |
2353 NETIF_F_RXHASH |
2354 NETIF_F_RXCSUM |
Patrick McHardyf6469682013-04-19 02:04:27 +00002355 NETIF_F_HW_VLAN_CTAG_RX |
2356 NETIF_F_HW_VLAN_CTAG_TX;
Michał Mirosławac52caa2011-06-08 08:38:01 +00002357
Alexander Duyck077887c2011-08-26 07:46:29 +00002358 /* copy netdev features into list of user selectable features */
2359 netdev->hw_features |= netdev->features;
Ben Greear89eaefb2012-03-06 09:41:58 +00002360 netdev->hw_features |= NETIF_F_RXALL;
Auke Kok9d5c8242008-01-24 02:22:38 -08002361
Alexander Duyck077887c2011-08-26 07:46:29 +00002362 /* set this bit last since it cannot be part of hw_features */
Patrick McHardyf6469682013-04-19 02:04:27 +00002363 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
Alexander Duyck077887c2011-08-26 07:46:29 +00002364
2365 netdev->vlan_features |= NETIF_F_TSO |
2366 NETIF_F_TSO6 |
2367 NETIF_F_IP_CSUM |
2368 NETIF_F_IPV6_CSUM |
2369 NETIF_F_SG;
Jeff Kirsher48f29ff2008-06-05 04:06:27 -07002370
Ben Greear6b8f0922012-03-06 09:41:53 +00002371 netdev->priv_flags |= IFF_SUPP_NOFCS;
2372
Yi Zou7b872a52010-09-22 17:57:58 +00002373 if (pci_using_dac) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002374 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00002375 netdev->vlan_features |= NETIF_F_HIGHDMA;
2376 }
Auke Kok9d5c8242008-01-24 02:22:38 -08002377
Michał Mirosławac52caa2011-06-08 08:38:01 +00002378 if (hw->mac.type >= e1000_82576) {
2379 netdev->hw_features |= NETIF_F_SCTP_CSUM;
Jesse Brandeburgb9473562009-04-27 22:36:13 +00002380 netdev->features |= NETIF_F_SCTP_CSUM;
Michał Mirosławac52caa2011-06-08 08:38:01 +00002381 }
Jesse Brandeburgb9473562009-04-27 22:36:13 +00002382
Jiri Pirko01789342011-08-16 06:29:00 +00002383 netdev->priv_flags |= IFF_UNICAST_FLT;
2384
Alexander Duyck330a6d62009-10-27 23:51:35 +00002385 adapter->en_mng_pt = igb_enable_mng_pass_thru(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002386
2387 /* before reading the NVM, reset the controller to put the device in a
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002388 * known good starting state
2389 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002390 hw->mac.ops.reset_hw(hw);
2391
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002392 /* make sure the NVM is good , i211/i210 parts can have special NVM
2393 * that doesn't contain a checksum
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002394 */
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002395 switch (hw->mac.type) {
2396 case e1000_i210:
2397 case e1000_i211:
2398 if (igb_get_flash_presence_i210(hw)) {
2399 if (hw->nvm.ops.validate(hw) < 0) {
2400 dev_err(&pdev->dev,
2401 "The NVM Checksum Is Not Valid\n");
2402 err = -EIO;
2403 goto err_eeprom;
2404 }
2405 }
2406 break;
2407 default:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002408 if (hw->nvm.ops.validate(hw) < 0) {
2409 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
2410 err = -EIO;
2411 goto err_eeprom;
2412 }
Carolyn Wybornyef3a0092013-07-17 19:02:53 +00002413 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08002414 }
2415
2416 /* copy the MAC address out of the NVM */
2417 if (hw->mac.ops.read_mac_addr(hw))
2418 dev_err(&pdev->dev, "NVM Read Error\n");
2419
2420 memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
Auke Kok9d5c8242008-01-24 02:22:38 -08002421
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +00002422 if (!is_valid_ether_addr(netdev->dev_addr)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002423 dev_err(&pdev->dev, "Invalid MAC Address\n");
2424 err = -EIO;
2425 goto err_eeprom;
2426 }
2427
Carolyn Wybornyd67974f2012-06-14 16:04:19 +00002428 /* get firmware version for ethtool -i */
2429 igb_set_fw_version(adapter);
2430
Todd Fujinaka27dff8b2014-05-29 05:47:26 +00002431 /* configure RXPBSIZE and TXPBSIZE */
2432 if (hw->mac.type == e1000_i210) {
2433 wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT);
2434 wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT);
2435 }
2436
Joe Perchesc061b182010-08-23 18:20:03 +00002437 setup_timer(&adapter->watchdog_timer, igb_watchdog,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002438 (unsigned long) adapter);
Joe Perchesc061b182010-08-23 18:20:03 +00002439 setup_timer(&adapter->phy_info_timer, igb_update_phy_info,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002440 (unsigned long) adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08002441
2442 INIT_WORK(&adapter->reset_task, igb_reset_task);
2443 INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
2444
Alexander Duyck450c87c2009-02-06 23:22:11 +00002445 /* Initialize link properties that are user-changeable */
Auke Kok9d5c8242008-01-24 02:22:38 -08002446 adapter->fc_autoneg = true;
2447 hw->mac.autoneg = true;
2448 hw->phy.autoneg_advertised = 0x2f;
2449
Alexander Duyck0cce1192009-07-23 18:10:24 +00002450 hw->fc.requested_mode = e1000_fc_default;
2451 hw->fc.current_mode = e1000_fc_default;
Auke Kok9d5c8242008-01-24 02:22:38 -08002452
Auke Kok9d5c8242008-01-24 02:22:38 -08002453 igb_validate_mdi_setting(hw);
2454
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002455 /* By default, support wake on port A */
Alexander Duycka2cf8b62009-03-13 20:41:17 +00002456 if (hw->bus.func == 0)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002457 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
2458
2459 /* Check the NVM for wake support on non-port A ports */
2460 if (hw->mac.type >= e1000_82580)
Alexander Duyck55cac242009-11-19 12:42:21 +00002461 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002462 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
2463 &eeprom_data);
Alexander Duycka2cf8b62009-03-13 20:41:17 +00002464 else if (hw->bus.func == 1)
2465 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
Auke Kok9d5c8242008-01-24 02:22:38 -08002466
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002467 if (eeprom_data & IGB_EEPROM_APME)
2468 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002469
2470 /* now that we have the eeprom settings, apply the special cases where
2471 * the eeprom may be wrong or the board simply won't support wake on
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002472 * lan on a particular port
2473 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002474 switch (pdev->device) {
2475 case E1000_DEV_ID_82575GB_QUAD_COPPER:
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002476 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002477 break;
2478 case E1000_DEV_ID_82575EB_FIBER_SERDES:
Alexander Duyck2d064c02008-07-08 15:10:12 -07002479 case E1000_DEV_ID_82576_FIBER:
2480 case E1000_DEV_ID_82576_SERDES:
Auke Kok9d5c8242008-01-24 02:22:38 -08002481 /* Wake events only supported on port A for dual fiber
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002482 * regardless of eeprom setting
2483 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002484 if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002485 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002486 break;
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002487 case E1000_DEV_ID_82576_QUAD_COPPER:
Stefan Assmannd5aa2252010-04-09 09:51:34 +00002488 case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002489 /* if quad port adapter, disable WoL on all but port A */
2490 if (global_quad_port_a != 0)
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002491 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Alexander Duyckc8ea5ea2009-03-13 20:42:35 +00002492 else
2493 adapter->flags |= IGB_FLAG_QUAD_PORT_A;
2494 /* Reset for multiple quad port adapters */
2495 if (++global_quad_port_a == 4)
2496 global_quad_port_a = 0;
2497 break;
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002498 default:
2499 /* If the device can't wake, don't set software support */
2500 if (!device_can_wakeup(&adapter->pdev->dev))
2501 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
Auke Kok9d5c8242008-01-24 02:22:38 -08002502 }
2503
2504 /* initialize the wol settings based on the eeprom settings */
Matthew Vick63d4a8f2012-11-09 05:49:54 +00002505 if (adapter->flags & IGB_FLAG_WOL_SUPPORTED)
2506 adapter->wol |= E1000_WUFC_MAG;
2507
2508 /* Some vendors want WoL disabled by default, but still supported */
2509 if ((hw->mac.type == e1000_i350) &&
2510 (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
2511 adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
2512 adapter->wol = 0;
2513 }
2514
2515 device_set_wakeup_enable(&adapter->pdev->dev,
2516 adapter->flags & IGB_FLAG_WOL_SUPPORTED);
Auke Kok9d5c8242008-01-24 02:22:38 -08002517
2518 /* reset the hardware with the new settings */
2519 igb_reset(adapter);
2520
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002521 /* Init the I2C interface */
2522 err = igb_init_i2c(adapter);
2523 if (err) {
2524 dev_err(&pdev->dev, "failed to init i2c interface\n");
2525 goto err_eeprom;
2526 }
2527
Auke Kok9d5c8242008-01-24 02:22:38 -08002528 /* let the f/w know that the h/w is now under the control of the
Carolyn Wybornye52c0f92014-04-11 01:46:06 +00002529 * driver.
2530 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002531 igb_get_hw_control(adapter);
2532
Auke Kok9d5c8242008-01-24 02:22:38 -08002533 strcpy(netdev->name, "eth%d");
2534 err = register_netdev(netdev);
2535 if (err)
2536 goto err_register;
2537
Jesse Brandeburgb168dfc2009-04-17 20:44:32 +00002538 /* carrier off reporting is important to ethtool even BEFORE open */
2539 netif_carrier_off(netdev);
2540
Jeff Kirsher421e02f2008-10-17 11:08:31 -07002541#ifdef CONFIG_IGB_DCA
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08002542 if (dca_add_requester(&pdev->dev) == 0) {
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002543 adapter->flags |= IGB_FLAG_DCA_ENABLED;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002544 dev_info(&pdev->dev, "DCA enabled\n");
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002545 igb_setup_dca(adapter);
2546 }
Alexander Duyckc5b9bd52009-10-27 23:46:01 +00002547
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002548#endif
Carolyn Wybornye4288932012-12-07 03:01:42 +00002549#ifdef CONFIG_IGB_HWMON
2550 /* Initialize the thermal sensor on i350 devices. */
2551 if (hw->mac.type == e1000_i350 && hw->bus.func == 0) {
2552 u16 ets_word;
Matthew Vick3c89f6d2012-08-10 05:40:43 +00002553
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002554 /* Read the NVM to determine if this i350 device supports an
Carolyn Wybornye4288932012-12-07 03:01:42 +00002555 * external thermal sensor.
2556 */
2557 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word);
2558 if (ets_word != 0x0000 && ets_word != 0xFFFF)
2559 adapter->ets = true;
2560 else
2561 adapter->ets = false;
2562 if (igb_sysfs_init(adapter))
2563 dev_err(&pdev->dev,
2564 "failed to allocate sysfs resources\n");
2565 } else {
2566 adapter->ets = false;
2567 }
2568#endif
Carolyn Wyborny56cec242013-10-17 05:36:26 +00002569 /* Check if Media Autosense is enabled */
2570 adapter->ei = *ei;
2571 if (hw->dev_spec._82575.mas_capable)
2572 igb_init_mas(adapter);
2573
Anders Berggren673b8b72011-02-04 07:32:32 +00002574 /* do hw tstamp init after resetting */
Richard Cochran7ebae812012-03-16 10:55:37 +00002575 igb_ptp_init(adapter);
Anders Berggren673b8b72011-02-04 07:32:32 +00002576
Auke Kok9d5c8242008-01-24 02:22:38 -08002577 dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002578 /* print bus type/speed/width info, not applicable to i354 */
2579 if (hw->mac.type != e1000_i354) {
2580 dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n",
2581 netdev->name,
2582 ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
2583 (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" :
2584 "unknown"),
2585 ((hw->bus.width == e1000_bus_width_pcie_x4) ?
2586 "Width x4" :
2587 (hw->bus.width == e1000_bus_width_pcie_x2) ?
2588 "Width x2" :
2589 (hw->bus.width == e1000_bus_width_pcie_x1) ?
2590 "Width x1" : "unknown"), netdev->dev_addr);
2591 }
Auke Kok9d5c8242008-01-24 02:22:38 -08002592
Todd Fujinaka53ea6c72013-08-23 07:49:00 +00002593 if ((hw->mac.type >= e1000_i210 ||
2594 igb_get_flash_presence_i210(hw))) {
2595 ret_val = igb_read_part_string(hw, part_str,
2596 E1000_PBANUM_LENGTH);
2597 } else {
2598 ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND;
2599 }
2600
Carolyn Wyborny9835fd72010-11-22 17:17:21 +00002601 if (ret_val)
2602 strcpy(part_str, "Unknown");
2603 dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str);
Auke Kok9d5c8242008-01-24 02:22:38 -08002604 dev_info(&pdev->dev,
2605 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00002606 (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" :
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002607 (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
Auke Kok9d5c8242008-01-24 02:22:38 -08002608 adapter->num_rx_queues, adapter->num_tx_queues);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002609 if (hw->phy.media_type == e1000_media_type_copper) {
2610 switch (hw->mac.type) {
2611 case e1000_i350:
2612 case e1000_i210:
2613 case e1000_i211:
2614 /* Enable EEE for internal copper PHY devices */
Todd Fujinakac4c112f2014-08-29 06:43:13 +00002615 err = igb_set_eee_i350(hw, true, true);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002616 if ((!err) &&
2617 (!hw->dev_spec._82575.eee_disable)) {
2618 adapter->eee_advert =
2619 MDIO_EEE_100TX | MDIO_EEE_1000T;
2620 adapter->flags |= IGB_FLAG_EEE;
2621 }
2622 break;
2623 case e1000_i354:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002624 if ((rd32(E1000_CTRL_EXT) &
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002625 E1000_CTRL_EXT_LINK_MODE_SGMII)) {
Todd Fujinakac4c112f2014-08-29 06:43:13 +00002626 err = igb_set_eee_i354(hw, true, true);
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00002627 if ((!err) &&
2628 (!hw->dev_spec._82575.eee_disable)) {
2629 adapter->eee_advert =
2630 MDIO_EEE_100TX | MDIO_EEE_1000T;
2631 adapter->flags |= IGB_FLAG_EEE;
2632 }
2633 }
2634 break;
2635 default:
2636 break;
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002637 }
Carolyn Wyborny09b068d2011-03-11 20:42:13 -08002638 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00002639 pm_runtime_put_noidle(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08002640 return 0;
2641
2642err_register:
2643 igb_release_hw_control(adapter);
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002644 memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap));
Auke Kok9d5c8242008-01-24 02:22:38 -08002645err_eeprom:
2646 if (!igb_check_reset_block(hw))
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08002647 igb_reset_phy(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08002648
2649 if (hw->flash_address)
2650 iounmap(hw->flash_address);
Auke Kok9d5c8242008-01-24 02:22:38 -08002651err_sw_init:
Jia-Ju Bai42ad1a02015-08-05 22:05:16 +08002652 kfree(adapter->shadow_vfta);
Alexander Duyck047e0032009-10-27 15:49:27 +00002653 igb_clear_interrupt_scheme(adapter);
Peter Senna Tschudin75009b32014-03-20 03:31:08 +00002654 pci_iounmap(pdev, hw->hw_addr);
Auke Kok9d5c8242008-01-24 02:22:38 -08002655err_ioremap:
2656 free_netdev(netdev);
2657err_alloc_etherdev:
Alexander Duyck559e9c42009-10-27 23:52:50 +00002658 pci_release_selected_regions(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002659 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9d5c8242008-01-24 02:22:38 -08002660err_pci_reg:
2661err_dma:
2662 pci_disable_device(pdev);
2663 return err;
2664}
2665
Greg Rosefa44f2f2013-01-17 01:03:06 -08002666#ifdef CONFIG_PCI_IOV
Stefan Assmann781798a2013-09-24 05:18:39 +00002667static int igb_disable_sriov(struct pci_dev *pdev)
Greg Rosefa44f2f2013-01-17 01:03:06 -08002668{
2669 struct net_device *netdev = pci_get_drvdata(pdev);
2670 struct igb_adapter *adapter = netdev_priv(netdev);
2671 struct e1000_hw *hw = &adapter->hw;
2672
2673 /* reclaim resources allocated to VFs */
2674 if (adapter->vf_data) {
2675 /* disable iov and allow time for transactions to clear */
Alexander Duyckb09186d2013-03-26 00:03:26 +00002676 if (pci_vfs_assigned(pdev)) {
Greg Rosefa44f2f2013-01-17 01:03:06 -08002677 dev_warn(&pdev->dev,
2678 "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n");
2679 return -EPERM;
2680 } else {
2681 pci_disable_sriov(pdev);
2682 msleep(500);
2683 }
2684
2685 kfree(adapter->vf_data);
2686 adapter->vf_data = NULL;
2687 adapter->vfs_allocated_count = 0;
2688 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
2689 wrfl();
2690 msleep(100);
2691 dev_info(&pdev->dev, "IOV Disabled\n");
2692
2693 /* Re-enable DMA Coalescing flag since IOV is turned off */
2694 adapter->flags |= IGB_FLAG_DMAC;
2695 }
2696
2697 return 0;
2698}
2699
2700static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs)
2701{
2702 struct net_device *netdev = pci_get_drvdata(pdev);
2703 struct igb_adapter *adapter = netdev_priv(netdev);
2704 int old_vfs = pci_num_vf(pdev);
2705 int err = 0;
2706 int i;
2707
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00002708 if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) {
Mitch A Williams50267192013-06-20 06:03:36 +00002709 err = -EPERM;
2710 goto out;
2711 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002712 if (!num_vfs)
2713 goto out;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002714
Stefan Assmann781798a2013-09-24 05:18:39 +00002715 if (old_vfs) {
2716 dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n",
2717 old_vfs, max_vfs);
2718 adapter->vfs_allocated_count = old_vfs;
2719 } else
2720 adapter->vfs_allocated_count = num_vfs;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002721
2722 adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
2723 sizeof(struct vf_data_storage), GFP_KERNEL);
2724
2725 /* if allocation failed then we do not support SR-IOV */
2726 if (!adapter->vf_data) {
2727 adapter->vfs_allocated_count = 0;
2728 dev_err(&pdev->dev,
2729 "Unable to allocate memory for VF Data Storage\n");
2730 err = -ENOMEM;
2731 goto out;
2732 }
2733
Stefan Assmann781798a2013-09-24 05:18:39 +00002734 /* only call pci_enable_sriov() if no VFs are allocated already */
2735 if (!old_vfs) {
2736 err = pci_enable_sriov(pdev, adapter->vfs_allocated_count);
2737 if (err)
2738 goto err_out;
2739 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002740 dev_info(&pdev->dev, "%d VFs allocated\n",
2741 adapter->vfs_allocated_count);
2742 for (i = 0; i < adapter->vfs_allocated_count; i++)
2743 igb_vf_configure(adapter, i);
2744
2745 /* DMA Coalescing is not supported in IOV mode. */
2746 adapter->flags &= ~IGB_FLAG_DMAC;
2747 goto out;
2748
2749err_out:
2750 kfree(adapter->vf_data);
2751 adapter->vf_data = NULL;
2752 adapter->vfs_allocated_count = 0;
2753out:
2754 return err;
2755}
2756
2757#endif
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002758/**
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002759 * igb_remove_i2c - Cleanup I2C interface
2760 * @adapter: pointer to adapter structure
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002761 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002762static void igb_remove_i2c(struct igb_adapter *adapter)
2763{
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002764 /* free the adapter bus structure */
2765 i2c_del_adapter(&adapter->i2c_adap);
2766}
2767
Auke Kok9d5c8242008-01-24 02:22:38 -08002768/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002769 * igb_remove - Device Removal Routine
2770 * @pdev: PCI device information struct
Auke Kok9d5c8242008-01-24 02:22:38 -08002771 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002772 * igb_remove is called by the PCI subsystem to alert the driver
2773 * that it should release a PCI device. The could be caused by a
2774 * Hot-Plug event, or because the driver is going to be removed from
2775 * memory.
Auke Kok9d5c8242008-01-24 02:22:38 -08002776 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05002777static void igb_remove(struct pci_dev *pdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08002778{
2779 struct net_device *netdev = pci_get_drvdata(pdev);
2780 struct igb_adapter *adapter = netdev_priv(netdev);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002781 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08002782
Yan, Zheng749ab2c2012-01-04 20:23:37 +00002783 pm_runtime_get_noresume(&pdev->dev);
Carolyn Wybornye4288932012-12-07 03:01:42 +00002784#ifdef CONFIG_IGB_HWMON
2785 igb_sysfs_exit(adapter);
2786#endif
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00002787 igb_remove_i2c(adapter);
Matthew Vicka79f4f82012-08-10 05:40:44 +00002788 igb_ptp_stop(adapter);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002789 /* The watchdog timer may be rescheduled, so explicitly
Tejun Heo760141a2010-12-12 16:45:14 +01002790 * disable watchdog from being rescheduled.
2791 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002792 set_bit(__IGB_DOWN, &adapter->state);
2793 del_timer_sync(&adapter->watchdog_timer);
2794 del_timer_sync(&adapter->phy_info_timer);
2795
Tejun Heo760141a2010-12-12 16:45:14 +01002796 cancel_work_sync(&adapter->reset_task);
2797 cancel_work_sync(&adapter->watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08002798
Jeff Kirsher421e02f2008-10-17 11:08:31 -07002799#ifdef CONFIG_IGB_DCA
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002800 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002801 dev_info(&pdev->dev, "DCA disabled\n");
2802 dca_remove_requester(&pdev->dev);
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07002803 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
Alexander Duyckcbd347a2009-02-15 23:59:44 -08002804 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07002805 }
2806#endif
2807
Auke Kok9d5c8242008-01-24 02:22:38 -08002808 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002809 * would have already happened in close and is redundant.
2810 */
Auke Kok9d5c8242008-01-24 02:22:38 -08002811 igb_release_hw_control(adapter);
2812
Alexander Duyck37680112009-02-19 20:40:30 -08002813#ifdef CONFIG_PCI_IOV
Greg Rosefa44f2f2013-01-17 01:03:06 -08002814 igb_disable_sriov(pdev);
Alexander Duyck37680112009-02-19 20:40:30 -08002815#endif
Alexander Duyck559e9c42009-10-27 23:52:50 +00002816
Alex Williamsonc23d92b2015-07-29 14:38:15 -06002817 unregister_netdev(netdev);
2818
2819 igb_clear_interrupt_scheme(adapter);
2820
Peter Senna Tschudin75009b32014-03-20 03:31:08 +00002821 pci_iounmap(pdev, hw->hw_addr);
Alexander Duyck28b07592009-02-06 23:20:31 +00002822 if (hw->flash_address)
2823 iounmap(hw->flash_address);
Alexander Duyck559e9c42009-10-27 23:52:50 +00002824 pci_release_selected_regions(pdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002825 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9d5c8242008-01-24 02:22:38 -08002826
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002827 kfree(adapter->shadow_vfta);
Auke Kok9d5c8242008-01-24 02:22:38 -08002828 free_netdev(netdev);
2829
Frans Pop19d5afd2009-10-02 10:04:12 -07002830 pci_disable_pcie_error_reporting(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08002831
Auke Kok9d5c8242008-01-24 02:22:38 -08002832 pci_disable_device(pdev);
2833}
2834
2835/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002836 * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space
2837 * @adapter: board private structure to initialize
Alexander Duycka6b623e2009-10-27 23:47:53 +00002838 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002839 * This function initializes the vf specific data storage and then attempts to
2840 * allocate the VFs. The reason for ordering it this way is because it is much
2841 * mor expensive time wise to disable SR-IOV than it is to allocate and free
2842 * the memory for the VFs.
Alexander Duycka6b623e2009-10-27 23:47:53 +00002843 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05002844static void igb_probe_vfs(struct igb_adapter *adapter)
Alexander Duycka6b623e2009-10-27 23:47:53 +00002845{
2846#ifdef CONFIG_PCI_IOV
2847 struct pci_dev *pdev = adapter->pdev;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002848 struct e1000_hw *hw = &adapter->hw;
Alexander Duycka6b623e2009-10-27 23:47:53 +00002849
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002850 /* Virtualization features not supported on i210 family. */
2851 if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
2852 return;
2853
Greg Rosefa44f2f2013-01-17 01:03:06 -08002854 pci_sriov_set_totalvfs(pdev, 7);
Stefan Assmann6423fc32015-07-10 15:01:12 +02002855 igb_enable_sriov(pdev, max_vfs);
Alexander Duycka6b623e2009-10-27 23:47:53 +00002856
Alexander Duycka6b623e2009-10-27 23:47:53 +00002857#endif /* CONFIG_PCI_IOV */
2858}
2859
Greg Rosefa44f2f2013-01-17 01:03:06 -08002860static void igb_init_queue_configuration(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08002861{
2862 struct e1000_hw *hw = &adapter->hw;
Matthew Vick374a5422012-05-18 04:54:58 +00002863 u32 max_rss_queues;
Auke Kok9d5c8242008-01-24 02:22:38 -08002864
Matthew Vick374a5422012-05-18 04:54:58 +00002865 /* Determine the maximum number of RSS queues supported. */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002866 switch (hw->mac.type) {
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002867 case e1000_i211:
Matthew Vick374a5422012-05-18 04:54:58 +00002868 max_rss_queues = IGB_MAX_RX_QUEUES_I211;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002869 break;
Matthew Vick374a5422012-05-18 04:54:58 +00002870 case e1000_82575:
2871 case e1000_i210:
2872 max_rss_queues = IGB_MAX_RX_QUEUES_82575;
2873 break;
2874 case e1000_i350:
2875 /* I350 cannot do RSS and SR-IOV at the same time */
2876 if (!!adapter->vfs_allocated_count) {
2877 max_rss_queues = 1;
2878 break;
2879 }
2880 /* fall through */
2881 case e1000_82576:
2882 if (!!adapter->vfs_allocated_count) {
2883 max_rss_queues = 2;
2884 break;
2885 }
2886 /* fall through */
2887 case e1000_82580:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002888 case e1000_i354:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002889 default:
Matthew Vick374a5422012-05-18 04:54:58 +00002890 max_rss_queues = IGB_MAX_RX_QUEUES;
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00002891 break;
2892 }
Alexander Duycka99955f2009-11-12 18:37:19 +00002893
Matthew Vick374a5422012-05-18 04:54:58 +00002894 adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus());
2895
Shota Suzuki72ddef02015-07-01 09:25:52 +09002896 igb_set_flag_queue_pairs(adapter, max_rss_queues);
2897}
2898
2899void igb_set_flag_queue_pairs(struct igb_adapter *adapter,
2900 const u32 max_rss_queues)
2901{
2902 struct e1000_hw *hw = &adapter->hw;
2903
Matthew Vick374a5422012-05-18 04:54:58 +00002904 /* Determine if we need to pair queues. */
2905 switch (hw->mac.type) {
2906 case e1000_82575:
2907 case e1000_i211:
2908 /* Device supports enough interrupts without queue pairing. */
2909 break;
2910 case e1000_82576:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002911 /* If VFs are going to be allocated with RSS queues then we
Matthew Vick374a5422012-05-18 04:54:58 +00002912 * should pair the queues in order to conserve interrupts due
2913 * to limited supply.
2914 */
2915 if ((adapter->rss_queues > 1) &&
2916 (adapter->vfs_allocated_count > 6))
2917 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
2918 /* fall through */
2919 case e1000_82580:
2920 case e1000_i350:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00002921 case e1000_i354:
Matthew Vick374a5422012-05-18 04:54:58 +00002922 case e1000_i210:
2923 default:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002924 /* If rss_queues > half of max_rss_queues, pair the queues in
Matthew Vick374a5422012-05-18 04:54:58 +00002925 * order to conserve interrupts due to limited supply.
2926 */
2927 if (adapter->rss_queues > (max_rss_queues / 2))
2928 adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
2929 break;
2930 }
Greg Rosefa44f2f2013-01-17 01:03:06 -08002931}
2932
2933/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002934 * igb_sw_init - Initialize general software structures (struct igb_adapter)
2935 * @adapter: board private structure to initialize
Greg Rosefa44f2f2013-01-17 01:03:06 -08002936 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00002937 * igb_sw_init initializes the Adapter private data structure.
2938 * Fields are initialized based on PCI device information and
2939 * OS network device settings (MTU size).
Greg Rosefa44f2f2013-01-17 01:03:06 -08002940 **/
2941static int igb_sw_init(struct igb_adapter *adapter)
2942{
2943 struct e1000_hw *hw = &adapter->hw;
2944 struct net_device *netdev = adapter->netdev;
2945 struct pci_dev *pdev = adapter->pdev;
2946
2947 pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
2948
2949 /* set default ring sizes */
2950 adapter->tx_ring_count = IGB_DEFAULT_TXD;
2951 adapter->rx_ring_count = IGB_DEFAULT_RXD;
2952
2953 /* set default ITR values */
2954 adapter->rx_itr_setting = IGB_DEFAULT_ITR;
2955 adapter->tx_itr_setting = IGB_DEFAULT_ITR;
2956
2957 /* set default work limits */
2958 adapter->tx_work_limit = IGB_DEFAULT_TX_WORK;
2959
2960 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN +
2961 VLAN_HLEN;
2962 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2963
2964 spin_lock_init(&adapter->stats64_lock);
2965#ifdef CONFIG_PCI_IOV
2966 switch (hw->mac.type) {
2967 case e1000_82576:
2968 case e1000_i350:
2969 if (max_vfs > 7) {
2970 dev_warn(&pdev->dev,
2971 "Maximum of 7 VFs per PF, using max\n");
Alex Williamsond0f63ac2013-03-13 15:50:24 +00002972 max_vfs = adapter->vfs_allocated_count = 7;
Greg Rosefa44f2f2013-01-17 01:03:06 -08002973 } else
2974 adapter->vfs_allocated_count = max_vfs;
2975 if (adapter->vfs_allocated_count)
2976 dev_warn(&pdev->dev,
2977 "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n");
2978 break;
2979 default:
2980 break;
2981 }
2982#endif /* CONFIG_PCI_IOV */
2983
2984 igb_init_queue_configuration(adapter);
Alexander Duycka99955f2009-11-12 18:37:19 +00002985
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002986 /* Setup and initialize a copy of the hw vlan table array */
Joe Perchesb2adaca2013-02-03 17:43:58 +00002987 adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32),
2988 GFP_ATOMIC);
Carolyn Wyborny1128c752011-10-14 00:13:49 +00002989
Alexander Duycka6b623e2009-10-27 23:47:53 +00002990 /* This call may decrease the number of queues */
Stefan Assmann53c7d062012-12-04 06:00:12 +00002991 if (igb_init_interrupt_scheme(adapter, true)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08002992 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
2993 return -ENOMEM;
2994 }
2995
Alexander Duycka6b623e2009-10-27 23:47:53 +00002996 igb_probe_vfs(adapter);
2997
Auke Kok9d5c8242008-01-24 02:22:38 -08002998 /* Explicitly disable IRQ since the NIC can be in any state. */
2999 igb_irq_disable(adapter);
3000
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003001 if (hw->mac.type >= e1000_i350)
Carolyn Wyborny831ec0b2011-03-11 20:43:54 -08003002 adapter->flags &= ~IGB_FLAG_DMAC;
3003
Auke Kok9d5c8242008-01-24 02:22:38 -08003004 set_bit(__IGB_DOWN, &adapter->state);
3005 return 0;
3006}
3007
3008/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003009 * igb_open - Called when a network interface is made active
3010 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003011 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003012 * Returns 0 on success, negative value on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003013 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003014 * The open entry point is called when a network interface is made
3015 * active by the system (IFF_UP). At this point all resources needed
3016 * for transmit and receive operations are allocated, the interrupt
3017 * handler is registered with the OS, the watchdog timer is started,
3018 * and the stack is notified that the interface is ready.
Auke Kok9d5c8242008-01-24 02:22:38 -08003019 **/
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003020static int __igb_open(struct net_device *netdev, bool resuming)
Auke Kok9d5c8242008-01-24 02:22:38 -08003021{
3022 struct igb_adapter *adapter = netdev_priv(netdev);
3023 struct e1000_hw *hw = &adapter->hw;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003024 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003025 int err;
3026 int i;
3027
3028 /* disallow open during test */
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003029 if (test_bit(__IGB_TESTING, &adapter->state)) {
3030 WARN_ON(resuming);
Auke Kok9d5c8242008-01-24 02:22:38 -08003031 return -EBUSY;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003032 }
3033
3034 if (!resuming)
3035 pm_runtime_get_sync(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003036
Jesse Brandeburgb168dfc2009-04-17 20:44:32 +00003037 netif_carrier_off(netdev);
3038
Auke Kok9d5c8242008-01-24 02:22:38 -08003039 /* allocate transmit descriptors */
3040 err = igb_setup_all_tx_resources(adapter);
3041 if (err)
3042 goto err_setup_tx;
3043
3044 /* allocate receive descriptors */
3045 err = igb_setup_all_rx_resources(adapter);
3046 if (err)
3047 goto err_setup_rx;
3048
Nick Nunley88a268c2010-02-17 01:01:59 +00003049 igb_power_up_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003050
Auke Kok9d5c8242008-01-24 02:22:38 -08003051 /* before we allocate an interrupt, we must be ready to handle it.
3052 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3053 * as soon as we call pci_request_irq, so we have to setup our
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003054 * clean_rx handler before we do so.
3055 */
Auke Kok9d5c8242008-01-24 02:22:38 -08003056 igb_configure(adapter);
3057
3058 err = igb_request_irq(adapter);
3059 if (err)
3060 goto err_req_irq;
3061
Alexander Duyck0c2cc022012-09-25 00:31:22 +00003062 /* Notify the stack of the actual queue counts. */
3063 err = netif_set_real_num_tx_queues(adapter->netdev,
3064 adapter->num_tx_queues);
3065 if (err)
3066 goto err_set_queues;
3067
3068 err = netif_set_real_num_rx_queues(adapter->netdev,
3069 adapter->num_rx_queues);
3070 if (err)
3071 goto err_set_queues;
3072
Auke Kok9d5c8242008-01-24 02:22:38 -08003073 /* From here on the code is the same as igb_up() */
3074 clear_bit(__IGB_DOWN, &adapter->state);
3075
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00003076 for (i = 0; i < adapter->num_q_vectors; i++)
3077 napi_enable(&(adapter->q_vector[i]->napi));
Auke Kok9d5c8242008-01-24 02:22:38 -08003078
3079 /* Clear any pending interrupts. */
3080 rd32(E1000_ICR);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07003081
3082 igb_irq_enable(adapter);
3083
Alexander Duyckd4960302009-10-27 15:53:45 +00003084 /* notify VFs that reset has been completed */
3085 if (adapter->vfs_allocated_count) {
3086 u32 reg_data = rd32(E1000_CTRL_EXT);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003087
Alexander Duyckd4960302009-10-27 15:53:45 +00003088 reg_data |= E1000_CTRL_EXT_PFRSTD;
3089 wr32(E1000_CTRL_EXT, reg_data);
3090 }
3091
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003092 netif_tx_start_all_queues(netdev);
3093
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003094 if (!resuming)
3095 pm_runtime_put(&pdev->dev);
3096
Alexander Duyck25568a52009-10-27 23:49:59 +00003097 /* start the watchdog. */
3098 hw->mac.get_link_status = 1;
3099 schedule_work(&adapter->watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08003100
3101 return 0;
3102
Alexander Duyck0c2cc022012-09-25 00:31:22 +00003103err_set_queues:
3104 igb_free_irq(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003105err_req_irq:
3106 igb_release_hw_control(adapter);
Nick Nunley88a268c2010-02-17 01:01:59 +00003107 igb_power_down_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003108 igb_free_all_rx_resources(adapter);
3109err_setup_rx:
3110 igb_free_all_tx_resources(adapter);
3111err_setup_tx:
3112 igb_reset(adapter);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003113 if (!resuming)
3114 pm_runtime_put(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003115
3116 return err;
3117}
3118
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003119static int igb_open(struct net_device *netdev)
3120{
3121 return __igb_open(netdev, false);
3122}
3123
Auke Kok9d5c8242008-01-24 02:22:38 -08003124/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003125 * igb_close - Disables a network interface
3126 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003127 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003128 * Returns 0, this is not allowed to fail
Auke Kok9d5c8242008-01-24 02:22:38 -08003129 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003130 * The close entry point is called when an interface is de-activated
3131 * by the OS. The hardware is still under the driver's control, but
3132 * needs to be disabled. A global MAC reset is issued to stop the
3133 * hardware, and all transmit and receive resources are freed.
Auke Kok9d5c8242008-01-24 02:22:38 -08003134 **/
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003135static int __igb_close(struct net_device *netdev, bool suspending)
Auke Kok9d5c8242008-01-24 02:22:38 -08003136{
3137 struct igb_adapter *adapter = netdev_priv(netdev);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003138 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003139
3140 WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
Auke Kok9d5c8242008-01-24 02:22:38 -08003141
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003142 if (!suspending)
3143 pm_runtime_get_sync(&pdev->dev);
3144
3145 igb_down(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08003146 igb_free_irq(adapter);
3147
3148 igb_free_all_tx_resources(adapter);
3149 igb_free_all_rx_resources(adapter);
3150
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003151 if (!suspending)
3152 pm_runtime_put_sync(&pdev->dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08003153 return 0;
3154}
3155
Yan, Zheng749ab2c2012-01-04 20:23:37 +00003156static int igb_close(struct net_device *netdev)
3157{
3158 return __igb_close(netdev, false);
3159}
3160
Auke Kok9d5c8242008-01-24 02:22:38 -08003161/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003162 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
3163 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9d5c8242008-01-24 02:22:38 -08003164 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003165 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003166 **/
Alexander Duyck80785292009-10-27 15:51:47 +00003167int igb_setup_tx_resources(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003168{
Alexander Duyck59d71982010-04-27 13:09:25 +00003169 struct device *dev = tx_ring->dev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003170 int size;
3171
Alexander Duyck06034642011-08-26 07:44:22 +00003172 size = sizeof(struct igb_tx_buffer) * tx_ring->count;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003173
3174 tx_ring->tx_buffer_info = vzalloc(size);
Alexander Duyck06034642011-08-26 07:44:22 +00003175 if (!tx_ring->tx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003176 goto err;
Auke Kok9d5c8242008-01-24 02:22:38 -08003177
3178 /* round up to nearest 4K */
Alexander Duyck85e8d002009-02-16 00:00:20 -08003179 tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
Auke Kok9d5c8242008-01-24 02:22:38 -08003180 tx_ring->size = ALIGN(tx_ring->size, 4096);
3181
Alexander Duyck5536d212012-09-25 00:31:17 +00003182 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
3183 &tx_ring->dma, GFP_KERNEL);
Auke Kok9d5c8242008-01-24 02:22:38 -08003184 if (!tx_ring->desc)
3185 goto err;
3186
Auke Kok9d5c8242008-01-24 02:22:38 -08003187 tx_ring->next_to_use = 0;
3188 tx_ring->next_to_clean = 0;
Alexander Duyck81c2fc22011-08-26 07:45:20 +00003189
Auke Kok9d5c8242008-01-24 02:22:38 -08003190 return 0;
3191
3192err:
Alexander Duyck06034642011-08-26 07:44:22 +00003193 vfree(tx_ring->tx_buffer_info);
Alexander Duyckf33005a2012-09-13 06:27:55 +00003194 tx_ring->tx_buffer_info = NULL;
3195 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08003196 return -ENOMEM;
3197}
3198
3199/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003200 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
3201 * (Descriptors) for all queues
3202 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003203 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003204 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003205 **/
3206static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
3207{
Alexander Duyck439705e2009-10-27 23:49:20 +00003208 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003209 int i, err = 0;
3210
3211 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00003212 err = igb_setup_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003213 if (err) {
Alexander Duyck439705e2009-10-27 23:49:20 +00003214 dev_err(&pdev->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08003215 "Allocation for Tx Queue %u failed\n", i);
3216 for (i--; i >= 0; i--)
Alexander Duyck3025a442010-02-17 01:02:39 +00003217 igb_free_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003218 break;
3219 }
3220 }
3221
3222 return err;
3223}
3224
3225/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003226 * igb_setup_tctl - configure the transmit control registers
3227 * @adapter: Board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003228 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003229void igb_setup_tctl(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08003230{
Auke Kok9d5c8242008-01-24 02:22:38 -08003231 struct e1000_hw *hw = &adapter->hw;
3232 u32 tctl;
Auke Kok9d5c8242008-01-24 02:22:38 -08003233
Alexander Duyck85b430b2009-10-27 15:50:29 +00003234 /* disable queue 0 which is enabled by default on 82575 and 82576 */
3235 wr32(E1000_TXDCTL(0), 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08003236
3237 /* Program the Transmit Control Register */
Auke Kok9d5c8242008-01-24 02:22:38 -08003238 tctl = rd32(E1000_TCTL);
3239 tctl &= ~E1000_TCTL_CT;
3240 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
3241 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
3242
3243 igb_config_collision_dist(hw);
3244
Auke Kok9d5c8242008-01-24 02:22:38 -08003245 /* Enable transmits */
3246 tctl |= E1000_TCTL_EN;
3247
3248 wr32(E1000_TCTL, tctl);
3249}
3250
3251/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003252 * igb_configure_tx_ring - Configure transmit ring after Reset
3253 * @adapter: board private structure
3254 * @ring: tx ring to configure
Alexander Duyck85b430b2009-10-27 15:50:29 +00003255 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003256 * Configure a transmit ring after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003257 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003258void igb_configure_tx_ring(struct igb_adapter *adapter,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003259 struct igb_ring *ring)
Alexander Duyck85b430b2009-10-27 15:50:29 +00003260{
3261 struct e1000_hw *hw = &adapter->hw;
Alexander Duycka74420e2011-08-26 07:43:27 +00003262 u32 txdctl = 0;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003263 u64 tdba = ring->dma;
3264 int reg_idx = ring->reg_idx;
3265
3266 /* disable the queue */
Alexander Duycka74420e2011-08-26 07:43:27 +00003267 wr32(E1000_TXDCTL(reg_idx), 0);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003268 wrfl();
3269 mdelay(10);
3270
3271 wr32(E1000_TDLEN(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003272 ring->count * sizeof(union e1000_adv_tx_desc));
Alexander Duyck85b430b2009-10-27 15:50:29 +00003273 wr32(E1000_TDBAL(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003274 tdba & 0x00000000ffffffffULL);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003275 wr32(E1000_TDBAH(reg_idx), tdba >> 32);
3276
Alexander Duyckfce99e32009-10-27 15:51:27 +00003277 ring->tail = hw->hw_addr + E1000_TDT(reg_idx);
Alexander Duycka74420e2011-08-26 07:43:27 +00003278 wr32(E1000_TDH(reg_idx), 0);
Alexander Duyckfce99e32009-10-27 15:51:27 +00003279 writel(0, ring->tail);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003280
3281 txdctl |= IGB_TX_PTHRESH;
3282 txdctl |= IGB_TX_HTHRESH << 8;
3283 txdctl |= IGB_TX_WTHRESH << 16;
3284
3285 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
3286 wr32(E1000_TXDCTL(reg_idx), txdctl);
3287}
3288
3289/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003290 * igb_configure_tx - Configure transmit Unit after Reset
3291 * @adapter: board private structure
Alexander Duyck85b430b2009-10-27 15:50:29 +00003292 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003293 * Configure the Tx unit of the MAC after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003294 **/
3295static void igb_configure_tx(struct igb_adapter *adapter)
3296{
3297 int i;
3298
3299 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck3025a442010-02-17 01:02:39 +00003300 igb_configure_tx_ring(adapter, adapter->tx_ring[i]);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003301}
3302
3303/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003304 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
3305 * @rx_ring: Rx descriptor ring (for a specific queue) to setup
Auke Kok9d5c8242008-01-24 02:22:38 -08003306 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003307 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003308 **/
Alexander Duyck80785292009-10-27 15:51:47 +00003309int igb_setup_rx_resources(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003310{
Alexander Duyck59d71982010-04-27 13:09:25 +00003311 struct device *dev = rx_ring->dev;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003312 int size;
Auke Kok9d5c8242008-01-24 02:22:38 -08003313
Alexander Duyck06034642011-08-26 07:44:22 +00003314 size = sizeof(struct igb_rx_buffer) * rx_ring->count;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003315
3316 rx_ring->rx_buffer_info = vzalloc(size);
Alexander Duyck06034642011-08-26 07:44:22 +00003317 if (!rx_ring->rx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003318 goto err;
Auke Kok9d5c8242008-01-24 02:22:38 -08003319
Auke Kok9d5c8242008-01-24 02:22:38 -08003320 /* Round up to nearest 4K */
Alexander Duyckf33005a2012-09-13 06:27:55 +00003321 rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc);
Auke Kok9d5c8242008-01-24 02:22:38 -08003322 rx_ring->size = ALIGN(rx_ring->size, 4096);
3323
Alexander Duyck5536d212012-09-25 00:31:17 +00003324 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
3325 &rx_ring->dma, GFP_KERNEL);
Auke Kok9d5c8242008-01-24 02:22:38 -08003326 if (!rx_ring->desc)
3327 goto err;
3328
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003329 rx_ring->next_to_alloc = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003330 rx_ring->next_to_clean = 0;
3331 rx_ring->next_to_use = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003332
Auke Kok9d5c8242008-01-24 02:22:38 -08003333 return 0;
3334
3335err:
Alexander Duyck06034642011-08-26 07:44:22 +00003336 vfree(rx_ring->rx_buffer_info);
3337 rx_ring->rx_buffer_info = NULL;
Alexander Duyckf33005a2012-09-13 06:27:55 +00003338 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08003339 return -ENOMEM;
3340}
3341
3342/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003343 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
3344 * (Descriptors) for all queues
3345 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003346 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003347 * Return 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003348 **/
3349static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
3350{
Alexander Duyck439705e2009-10-27 23:49:20 +00003351 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08003352 int i, err = 0;
3353
3354 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00003355 err = igb_setup_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003356 if (err) {
Alexander Duyck439705e2009-10-27 23:49:20 +00003357 dev_err(&pdev->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08003358 "Allocation for Rx Queue %u failed\n", i);
3359 for (i--; i >= 0; i--)
Alexander Duyck3025a442010-02-17 01:02:39 +00003360 igb_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003361 break;
3362 }
3363 }
3364
3365 return err;
3366}
3367
3368/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003369 * igb_setup_mrqc - configure the multiple receive queue control registers
3370 * @adapter: Board private structure
Alexander Duyck06cf2662009-10-27 15:53:25 +00003371 **/
3372static void igb_setup_mrqc(struct igb_adapter *adapter)
3373{
3374 struct e1000_hw *hw = &adapter->hw;
3375 u32 mrqc, rxcsum;
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003376 u32 j, num_rx_queues;
Eric Dumazeteb31f842014-11-16 06:23:14 -08003377 u32 rss_key[10];
Alexander Duyck06cf2662009-10-27 15:53:25 +00003378
Eric Dumazeteb31f842014-11-16 06:23:14 -08003379 netdev_rss_key_fill(rss_key, sizeof(rss_key));
Alexander Duycka57fe232012-09-13 06:28:16 +00003380 for (j = 0; j < 10; j++)
Eric Dumazeteb31f842014-11-16 06:23:14 -08003381 wr32(E1000_RSSRK(j), rss_key[j]);
Alexander Duyck06cf2662009-10-27 15:53:25 +00003382
Alexander Duycka99955f2009-11-12 18:37:19 +00003383 num_rx_queues = adapter->rss_queues;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003384
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003385 switch (hw->mac.type) {
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003386 case e1000_82576:
3387 /* 82576 supports 2 RSS queues for SR-IOV */
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003388 if (adapter->vfs_allocated_count)
Alexander Duyck06cf2662009-10-27 15:53:25 +00003389 num_rx_queues = 2;
Alexander Duyck797fd4b2012-09-13 06:28:11 +00003390 break;
3391 default:
3392 break;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003393 }
3394
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003395 if (adapter->rss_indir_tbl_init != num_rx_queues) {
3396 for (j = 0; j < IGB_RETA_SIZE; j++)
Carolyn Wybornyc502ea22014-04-11 01:46:33 +00003397 adapter->rss_indir_tbl[j] =
3398 (j * num_rx_queues) / IGB_RETA_SIZE;
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003399 adapter->rss_indir_tbl_init = num_rx_queues;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003400 }
Laura Mihaela Vasilescued12cc92013-07-31 20:19:54 +00003401 igb_write_rss_indir_tbl(adapter);
Alexander Duyck06cf2662009-10-27 15:53:25 +00003402
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003403 /* Disable raw packet checksumming so that RSS hash is placed in
Alexander Duyck06cf2662009-10-27 15:53:25 +00003404 * descriptor on writeback. No need to enable TCP/UDP/IP checksum
3405 * offloads as they are enabled by default
3406 */
3407 rxcsum = rd32(E1000_RXCSUM);
3408 rxcsum |= E1000_RXCSUM_PCSD;
3409
3410 if (adapter->hw.mac.type >= e1000_82576)
3411 /* Enable Receive Checksum Offload for SCTP */
3412 rxcsum |= E1000_RXCSUM_CRCOFL;
3413
3414 /* Don't need to set TUOFL or IPOFL, they default to 1 */
3415 wr32(E1000_RXCSUM, rxcsum);
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003416
Akeem G. Abodunrin039454a2012-11-13 04:03:21 +00003417 /* Generate RSS hash based on packet types, TCP/UDP
3418 * port numbers and/or IPv4/v6 src and dst addresses
3419 */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003420 mrqc = E1000_MRQC_RSS_FIELD_IPV4 |
3421 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3422 E1000_MRQC_RSS_FIELD_IPV6 |
3423 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3424 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003425
Akeem G. Abodunrin039454a2012-11-13 04:03:21 +00003426 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
3427 mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP;
3428 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
3429 mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP;
3430
Alexander Duyck06cf2662009-10-27 15:53:25 +00003431 /* If VMDq is enabled then we set the appropriate mode for that, else
3432 * we default to RSS so that an RSS hash is calculated per packet even
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003433 * if we are only using one queue
3434 */
Alexander Duyck06cf2662009-10-27 15:53:25 +00003435 if (adapter->vfs_allocated_count) {
3436 if (hw->mac.type > e1000_82575) {
3437 /* Set the default pool for the PF's first queue */
3438 u32 vtctl = rd32(E1000_VT_CTL);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003439
Alexander Duyck06cf2662009-10-27 15:53:25 +00003440 vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK |
3441 E1000_VT_CTL_DISABLE_DEF_POOL);
3442 vtctl |= adapter->vfs_allocated_count <<
3443 E1000_VT_CTL_DEFAULT_POOL_SHIFT;
3444 wr32(E1000_VT_CTL, vtctl);
3445 }
Alexander Duycka99955f2009-11-12 18:37:19 +00003446 if (adapter->rss_queues > 1)
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003447 mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003448 else
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003449 mrqc |= E1000_MRQC_ENABLE_VMDQ;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003450 } else {
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00003451 if (hw->mac.type != e1000_i211)
3452 mrqc |= E1000_MRQC_ENABLE_RSS_4Q;
Alexander Duyck06cf2662009-10-27 15:53:25 +00003453 }
3454 igb_vmm_control(adapter);
3455
Alexander Duyck06cf2662009-10-27 15:53:25 +00003456 wr32(E1000_MRQC, mrqc);
3457}
3458
3459/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003460 * igb_setup_rctl - configure the receive control registers
3461 * @adapter: Board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003462 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003463void igb_setup_rctl(struct igb_adapter *adapter)
Auke Kok9d5c8242008-01-24 02:22:38 -08003464{
3465 struct e1000_hw *hw = &adapter->hw;
3466 u32 rctl;
Auke Kok9d5c8242008-01-24 02:22:38 -08003467
3468 rctl = rd32(E1000_RCTL);
3469
3470 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
Alexander Duyck69d728b2008-11-25 01:04:03 -08003471 rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
Auke Kok9d5c8242008-01-24 02:22:38 -08003472
Alexander Duyck69d728b2008-11-25 01:04:03 -08003473 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF |
Alexander Duyck28b07592009-02-06 23:20:31 +00003474 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
Auke Kok9d5c8242008-01-24 02:22:38 -08003475
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003476 /* enable stripping of CRC. It's unlikely this will break BMC
Auke Kok87cb7e82008-07-08 15:08:29 -07003477 * redirection as it did with e1000. Newer features require
3478 * that the HW strips the CRC.
Alexander Duyck73cd78f2009-02-12 18:16:59 +00003479 */
Auke Kok87cb7e82008-07-08 15:08:29 -07003480 rctl |= E1000_RCTL_SECRC;
Auke Kok9d5c8242008-01-24 02:22:38 -08003481
Alexander Duyck559e9c42009-10-27 23:52:50 +00003482 /* disable store bad packets and clear size bits. */
Alexander Duyckec54d7d2009-01-31 00:52:57 -08003483 rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256);
Auke Kok9d5c8242008-01-24 02:22:38 -08003484
Alexander Duyck6ec43fe2009-10-27 15:50:48 +00003485 /* enable LPE to prevent packets larger than max_frame_size */
3486 rctl |= E1000_RCTL_LPE;
Auke Kok9d5c8242008-01-24 02:22:38 -08003487
Alexander Duyck952f72a2009-10-27 15:51:07 +00003488 /* disable queue 0 to prevent tail write w/o re-config */
3489 wr32(E1000_RXDCTL(0), 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08003490
Alexander Duycke1739522009-02-19 20:39:44 -08003491 /* Attention!!! For SR-IOV PF driver operations you must enable
3492 * queue drop for all VF and PF queues to prevent head of line blocking
3493 * if an un-trusted VF does not provide descriptors to hardware.
3494 */
3495 if (adapter->vfs_allocated_count) {
Alexander Duycke1739522009-02-19 20:39:44 -08003496 /* set all queue drop enable bits */
3497 wr32(E1000_QDE, ALL_QUEUES);
Alexander Duycke1739522009-02-19 20:39:44 -08003498 }
3499
Ben Greear89eaefb2012-03-06 09:41:58 +00003500 /* This is useful for sniffing bad packets. */
3501 if (adapter->netdev->features & NETIF_F_RXALL) {
3502 /* UPE and MPE will be handled by normal PROMISC logic
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003503 * in e1000e_set_rx_mode
3504 */
Ben Greear89eaefb2012-03-06 09:41:58 +00003505 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3506 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3507 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3508
3509 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3510 E1000_RCTL_DPF | /* Allow filtered pause */
3511 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3512 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3513 * and that breaks VLANs.
3514 */
3515 }
3516
Auke Kok9d5c8242008-01-24 02:22:38 -08003517 wr32(E1000_RCTL, rctl);
3518}
3519
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003520static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00003521 int vfn)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003522{
3523 struct e1000_hw *hw = &adapter->hw;
3524 u32 vmolr;
3525
3526 /* if it isn't the PF check to see if VFs are enabled and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003527 * increase the size to support vlan tags
3528 */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003529 if (vfn < adapter->vfs_allocated_count &&
3530 adapter->vf_data[vfn].vlans_enabled)
3531 size += VLAN_TAG_SIZE;
3532
3533 vmolr = rd32(E1000_VMOLR(vfn));
3534 vmolr &= ~E1000_VMOLR_RLPML_MASK;
3535 vmolr |= size | E1000_VMOLR_LPE;
3536 wr32(E1000_VMOLR(vfn), vmolr);
3537
3538 return 0;
3539}
3540
Auke Kok9d5c8242008-01-24 02:22:38 -08003541/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003542 * igb_rlpml_set - set maximum receive packet size
3543 * @adapter: board private structure
Alexander Duycke1739522009-02-19 20:39:44 -08003544 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003545 * Configure maximum receivable packet size.
Alexander Duycke1739522009-02-19 20:39:44 -08003546 **/
3547static void igb_rlpml_set(struct igb_adapter *adapter)
3548{
Alexander Duyck153285f2011-08-26 07:43:32 +00003549 u32 max_frame_size = adapter->max_frame_size;
Alexander Duycke1739522009-02-19 20:39:44 -08003550 struct e1000_hw *hw = &adapter->hw;
3551 u16 pf_id = adapter->vfs_allocated_count;
3552
Alexander Duycke1739522009-02-19 20:39:44 -08003553 if (pf_id) {
3554 igb_set_vf_rlpml(adapter, max_frame_size, pf_id);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003555 /* If we're in VMDQ or SR-IOV mode, then set global RLPML
Alexander Duyck153285f2011-08-26 07:43:32 +00003556 * to our max jumbo frame size, in case we need to enable
3557 * jumbo frames on one of the rings later.
3558 * This will not pass over-length frames into the default
3559 * queue because it's gated by the VMOLR.RLPML.
3560 */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003561 max_frame_size = MAX_JUMBO_FRAME_SIZE;
Alexander Duycke1739522009-02-19 20:39:44 -08003562 }
3563
3564 wr32(E1000_RLPML, max_frame_size);
3565}
3566
Williams, Mitch A8151d292010-02-10 01:44:24 +00003567static inline void igb_set_vmolr(struct igb_adapter *adapter,
3568 int vfn, bool aupe)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003569{
3570 struct e1000_hw *hw = &adapter->hw;
3571 u32 vmolr;
3572
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003573 /* This register exists only on 82576 and newer so if we are older then
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003574 * we should exit and do nothing
3575 */
3576 if (hw->mac.type < e1000_82576)
3577 return;
3578
3579 vmolr = rd32(E1000_VMOLR(vfn));
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003580 vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */
Stefan Assmanndc1edc62013-12-11 22:10:12 +00003581 if (hw->mac.type == e1000_i350) {
3582 u32 dvmolr;
3583
3584 dvmolr = rd32(E1000_DVMOLR(vfn));
3585 dvmolr |= E1000_DVMOLR_STRVLAN;
3586 wr32(E1000_DVMOLR(vfn), dvmolr);
3587 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00003588 if (aupe)
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003589 vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */
Williams, Mitch A8151d292010-02-10 01:44:24 +00003590 else
3591 vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003592
3593 /* clear all bits that might not be set */
3594 vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE);
3595
Alexander Duycka99955f2009-11-12 18:37:19 +00003596 if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count)
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003597 vmolr |= E1000_VMOLR_RSSE; /* enable RSS */
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003598 /* for VMDq only allow the VFs and pool 0 to accept broadcast and
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003599 * multicast packets
3600 */
3601 if (vfn <= adapter->vfs_allocated_count)
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003602 vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003603
3604 wr32(E1000_VMOLR(vfn), vmolr);
3605}
3606
Alexander Duycke1739522009-02-19 20:39:44 -08003607/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003608 * igb_configure_rx_ring - Configure a receive ring after Reset
3609 * @adapter: board private structure
3610 * @ring: receive ring to be configured
Alexander Duyck85b430b2009-10-27 15:50:29 +00003611 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003612 * Configure the Rx unit of the MAC after a reset.
Alexander Duyck85b430b2009-10-27 15:50:29 +00003613 **/
Alexander Duyckd7ee5b32009-10-27 15:54:23 +00003614void igb_configure_rx_ring(struct igb_adapter *adapter,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003615 struct igb_ring *ring)
Alexander Duyck85b430b2009-10-27 15:50:29 +00003616{
3617 struct e1000_hw *hw = &adapter->hw;
3618 u64 rdba = ring->dma;
3619 int reg_idx = ring->reg_idx;
Alexander Duycka74420e2011-08-26 07:43:27 +00003620 u32 srrctl = 0, rxdctl = 0;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003621
3622 /* disable the queue */
Alexander Duycka74420e2011-08-26 07:43:27 +00003623 wr32(E1000_RXDCTL(reg_idx), 0);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003624
3625 /* Set DMA base address registers */
3626 wr32(E1000_RDBAL(reg_idx),
3627 rdba & 0x00000000ffffffffULL);
3628 wr32(E1000_RDBAH(reg_idx), rdba >> 32);
3629 wr32(E1000_RDLEN(reg_idx),
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003630 ring->count * sizeof(union e1000_adv_rx_desc));
Alexander Duyck85b430b2009-10-27 15:50:29 +00003631
3632 /* initialize head and tail */
Alexander Duyckfce99e32009-10-27 15:51:27 +00003633 ring->tail = hw->hw_addr + E1000_RDT(reg_idx);
Alexander Duycka74420e2011-08-26 07:43:27 +00003634 wr32(E1000_RDH(reg_idx), 0);
Alexander Duyckfce99e32009-10-27 15:51:27 +00003635 writel(0, ring->tail);
Alexander Duyck85b430b2009-10-27 15:50:29 +00003636
Alexander Duyck952f72a2009-10-27 15:51:07 +00003637 /* set descriptor configuration */
Alexander Duyck44390ca2011-08-26 07:43:38 +00003638 srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
Alexander Duyckde78d1f2012-09-25 00:31:12 +00003639 srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003640 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
Alexander Duyck06218a82011-08-26 07:46:55 +00003641 if (hw->mac.type >= e1000_82580)
Nick Nunley757b77e2010-03-26 11:36:47 +00003642 srrctl |= E1000_SRRCTL_TIMESTAMP;
Nick Nunleye6bdb6f2010-02-17 01:03:38 +00003643 /* Only set Drop Enable if we are supporting multiple queues */
3644 if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1)
3645 srrctl |= E1000_SRRCTL_DROP_EN;
Alexander Duyck952f72a2009-10-27 15:51:07 +00003646
3647 wr32(E1000_SRRCTL(reg_idx), srrctl);
3648
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003649 /* set filtering for VMDQ pools */
Williams, Mitch A8151d292010-02-10 01:44:24 +00003650 igb_set_vmolr(adapter, reg_idx & 0x7, true);
Alexander Duyck7d5753f2009-10-27 23:47:16 +00003651
Alexander Duyck85b430b2009-10-27 15:50:29 +00003652 rxdctl |= IGB_RX_PTHRESH;
3653 rxdctl |= IGB_RX_HTHRESH << 8;
3654 rxdctl |= IGB_RX_WTHRESH << 16;
Alexander Duycka74420e2011-08-26 07:43:27 +00003655
3656 /* enable receive descriptor fetching */
3657 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
Alexander Duyck85b430b2009-10-27 15:50:29 +00003658 wr32(E1000_RXDCTL(reg_idx), rxdctl);
3659}
3660
3661/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003662 * igb_configure_rx - Configure receive Unit after Reset
3663 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003664 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003665 * Configure the Rx unit of the MAC after a reset.
Auke Kok9d5c8242008-01-24 02:22:38 -08003666 **/
3667static void igb_configure_rx(struct igb_adapter *adapter)
3668{
Hannes Eder91075842009-02-18 19:36:04 -08003669 int i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003670
Alexander Duyck68d480c2009-10-05 06:33:08 +00003671 /* set UTA to appropriate mode */
3672 igb_set_uta(adapter);
3673
Alexander Duyck26ad9172009-10-05 06:32:49 +00003674 /* set the correct pool for the PF default MAC address in entry 0 */
3675 igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003676 adapter->vfs_allocated_count);
Alexander Duyck26ad9172009-10-05 06:32:49 +00003677
Alexander Duyck06cf2662009-10-27 15:53:25 +00003678 /* Setup the HW Rx Head and Tail Descriptor Pointers and
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003679 * the Base and Length of the Rx Descriptor Ring
3680 */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00003681 for (i = 0; i < adapter->num_rx_queues; i++)
3682 igb_configure_rx_ring(adapter, adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003683}
3684
3685/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003686 * igb_free_tx_resources - Free Tx Resources per Queue
3687 * @tx_ring: Tx descriptor ring for a specific queue
Auke Kok9d5c8242008-01-24 02:22:38 -08003688 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003689 * Free all transmit software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003690 **/
Alexander Duyck68fd9912008-11-20 00:48:10 -08003691void igb_free_tx_resources(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003692{
Mitch Williams3b644cf2008-06-27 10:59:48 -07003693 igb_clean_tx_ring(tx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08003694
Alexander Duyck06034642011-08-26 07:44:22 +00003695 vfree(tx_ring->tx_buffer_info);
3696 tx_ring->tx_buffer_info = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003697
Alexander Duyck439705e2009-10-27 23:49:20 +00003698 /* if not set, then don't free */
3699 if (!tx_ring->desc)
3700 return;
3701
Alexander Duyck59d71982010-04-27 13:09:25 +00003702 dma_free_coherent(tx_ring->dev, tx_ring->size,
3703 tx_ring->desc, tx_ring->dma);
Auke Kok9d5c8242008-01-24 02:22:38 -08003704
3705 tx_ring->desc = NULL;
3706}
3707
3708/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003709 * igb_free_all_tx_resources - Free Tx Resources for All Queues
3710 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003711 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003712 * Free all transmit software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003713 **/
3714static void igb_free_all_tx_resources(struct igb_adapter *adapter)
3715{
3716 int i;
3717
3718 for (i = 0; i < adapter->num_tx_queues; i++)
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08003719 if (adapter->tx_ring[i])
3720 igb_free_tx_resources(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003721}
3722
Alexander Duyckebe42d12011-08-26 07:45:09 +00003723void igb_unmap_and_free_tx_resource(struct igb_ring *ring,
3724 struct igb_tx_buffer *tx_buffer)
Auke Kok9d5c8242008-01-24 02:22:38 -08003725{
Alexander Duyckebe42d12011-08-26 07:45:09 +00003726 if (tx_buffer->skb) {
3727 dev_kfree_skb_any(tx_buffer->skb);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003728 if (dma_unmap_len(tx_buffer, len))
Alexander Duyckebe42d12011-08-26 07:45:09 +00003729 dma_unmap_single(ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003730 dma_unmap_addr(tx_buffer, dma),
3731 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00003732 DMA_TO_DEVICE);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003733 } else if (dma_unmap_len(tx_buffer, len)) {
Alexander Duyckebe42d12011-08-26 07:45:09 +00003734 dma_unmap_page(ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003735 dma_unmap_addr(tx_buffer, dma),
3736 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00003737 DMA_TO_DEVICE);
Alexander Duyck6366ad32009-12-02 16:47:18 +00003738 }
Alexander Duyckebe42d12011-08-26 07:45:09 +00003739 tx_buffer->next_to_watch = NULL;
3740 tx_buffer->skb = NULL;
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00003741 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckebe42d12011-08-26 07:45:09 +00003742 /* buffer_info must be completely set up in the transmit path */
Auke Kok9d5c8242008-01-24 02:22:38 -08003743}
3744
3745/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003746 * igb_clean_tx_ring - Free Tx Buffers
3747 * @tx_ring: ring to be cleaned
Auke Kok9d5c8242008-01-24 02:22:38 -08003748 **/
Mitch Williams3b644cf2008-06-27 10:59:48 -07003749static void igb_clean_tx_ring(struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003750{
Alexander Duyck06034642011-08-26 07:44:22 +00003751 struct igb_tx_buffer *buffer_info;
Auke Kok9d5c8242008-01-24 02:22:38 -08003752 unsigned long size;
Alexander Duyck6ad4edf2011-08-26 07:45:26 +00003753 u16 i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003754
Alexander Duyck06034642011-08-26 07:44:22 +00003755 if (!tx_ring->tx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003756 return;
3757 /* Free all the Tx ring sk_buffs */
3758
3759 for (i = 0; i < tx_ring->count; i++) {
Alexander Duyck06034642011-08-26 07:44:22 +00003760 buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyck80785292009-10-27 15:51:47 +00003761 igb_unmap_and_free_tx_resource(tx_ring, buffer_info);
Auke Kok9d5c8242008-01-24 02:22:38 -08003762 }
3763
John Fastabenddad8a3b2012-04-23 12:22:39 +00003764 netdev_tx_reset_queue(txring_txq(tx_ring));
3765
Alexander Duyck06034642011-08-26 07:44:22 +00003766 size = sizeof(struct igb_tx_buffer) * tx_ring->count;
3767 memset(tx_ring->tx_buffer_info, 0, size);
Auke Kok9d5c8242008-01-24 02:22:38 -08003768
3769 /* Zero out the descriptor ring */
Auke Kok9d5c8242008-01-24 02:22:38 -08003770 memset(tx_ring->desc, 0, tx_ring->size);
3771
3772 tx_ring->next_to_use = 0;
3773 tx_ring->next_to_clean = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003774}
3775
3776/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003777 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
3778 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003779 **/
3780static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
3781{
3782 int i;
3783
3784 for (i = 0; i < adapter->num_tx_queues; i++)
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08003785 if (adapter->tx_ring[i])
3786 igb_clean_tx_ring(adapter->tx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003787}
3788
3789/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003790 * igb_free_rx_resources - Free Rx Resources
3791 * @rx_ring: ring to clean the resources from
Auke Kok9d5c8242008-01-24 02:22:38 -08003792 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003793 * Free all receive software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003794 **/
Alexander Duyck68fd9912008-11-20 00:48:10 -08003795void igb_free_rx_resources(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003796{
Mitch Williams3b644cf2008-06-27 10:59:48 -07003797 igb_clean_rx_ring(rx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08003798
Alexander Duyck06034642011-08-26 07:44:22 +00003799 vfree(rx_ring->rx_buffer_info);
3800 rx_ring->rx_buffer_info = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003801
Alexander Duyck439705e2009-10-27 23:49:20 +00003802 /* if not set, then don't free */
3803 if (!rx_ring->desc)
3804 return;
3805
Alexander Duyck59d71982010-04-27 13:09:25 +00003806 dma_free_coherent(rx_ring->dev, rx_ring->size,
3807 rx_ring->desc, rx_ring->dma);
Auke Kok9d5c8242008-01-24 02:22:38 -08003808
3809 rx_ring->desc = NULL;
3810}
3811
3812/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003813 * igb_free_all_rx_resources - Free Rx Resources for All Queues
3814 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003815 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003816 * Free all receive software resources
Auke Kok9d5c8242008-01-24 02:22:38 -08003817 **/
3818static void igb_free_all_rx_resources(struct igb_adapter *adapter)
3819{
3820 int i;
3821
3822 for (i = 0; i < adapter->num_rx_queues; i++)
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08003823 if (adapter->rx_ring[i])
3824 igb_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003825}
3826
3827/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003828 * igb_clean_rx_ring - Free Rx Buffers per Queue
3829 * @rx_ring: ring to free buffers from
Auke Kok9d5c8242008-01-24 02:22:38 -08003830 **/
Mitch Williams3b644cf2008-06-27 10:59:48 -07003831static void igb_clean_rx_ring(struct igb_ring *rx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08003832{
Auke Kok9d5c8242008-01-24 02:22:38 -08003833 unsigned long size;
Alexander Duyckc023cd82011-08-26 07:43:43 +00003834 u16 i;
Auke Kok9d5c8242008-01-24 02:22:38 -08003835
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003836 if (rx_ring->skb)
3837 dev_kfree_skb(rx_ring->skb);
3838 rx_ring->skb = NULL;
3839
Alexander Duyck06034642011-08-26 07:44:22 +00003840 if (!rx_ring->rx_buffer_info)
Auke Kok9d5c8242008-01-24 02:22:38 -08003841 return;
Alexander Duyck439705e2009-10-27 23:49:20 +00003842
Auke Kok9d5c8242008-01-24 02:22:38 -08003843 /* Free all the Rx ring sk_buffs */
3844 for (i = 0; i < rx_ring->count; i++) {
Alexander Duyck06034642011-08-26 07:44:22 +00003845 struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9d5c8242008-01-24 02:22:38 -08003846
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003847 if (!buffer_info->page)
3848 continue;
3849
3850 dma_unmap_page(rx_ring->dev,
3851 buffer_info->dma,
3852 PAGE_SIZE,
3853 DMA_FROM_DEVICE);
3854 __free_page(buffer_info->page);
3855
Alexander Duyck1a1c2252012-09-25 00:30:52 +00003856 buffer_info->page = NULL;
Auke Kok9d5c8242008-01-24 02:22:38 -08003857 }
3858
Alexander Duyck06034642011-08-26 07:44:22 +00003859 size = sizeof(struct igb_rx_buffer) * rx_ring->count;
3860 memset(rx_ring->rx_buffer_info, 0, size);
Auke Kok9d5c8242008-01-24 02:22:38 -08003861
3862 /* Zero out the descriptor ring */
3863 memset(rx_ring->desc, 0, rx_ring->size);
3864
Alexander Duyckcbc8e552012-09-25 00:31:02 +00003865 rx_ring->next_to_alloc = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003866 rx_ring->next_to_clean = 0;
3867 rx_ring->next_to_use = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08003868}
3869
3870/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003871 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
3872 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003873 **/
3874static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
3875{
3876 int i;
3877
3878 for (i = 0; i < adapter->num_rx_queues; i++)
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08003879 if (adapter->rx_ring[i])
3880 igb_clean_rx_ring(adapter->rx_ring[i]);
Auke Kok9d5c8242008-01-24 02:22:38 -08003881}
3882
3883/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003884 * igb_set_mac - Change the Ethernet Address of the NIC
3885 * @netdev: network interface device structure
3886 * @p: pointer to an address structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003887 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003888 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08003889 **/
3890static int igb_set_mac(struct net_device *netdev, void *p)
3891{
3892 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck28b07592009-02-06 23:20:31 +00003893 struct e1000_hw *hw = &adapter->hw;
Auke Kok9d5c8242008-01-24 02:22:38 -08003894 struct sockaddr *addr = p;
3895
3896 if (!is_valid_ether_addr(addr->sa_data))
3897 return -EADDRNOTAVAIL;
3898
3899 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Alexander Duyck28b07592009-02-06 23:20:31 +00003900 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9d5c8242008-01-24 02:22:38 -08003901
Alexander Duyck26ad9172009-10-05 06:32:49 +00003902 /* set the correct pool for the new PF MAC address in entry 0 */
3903 igb_rar_set_qsel(adapter, hw->mac.addr, 0,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003904 adapter->vfs_allocated_count);
Alexander Duycke1739522009-02-19 20:39:44 -08003905
Auke Kok9d5c8242008-01-24 02:22:38 -08003906 return 0;
3907}
3908
3909/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003910 * igb_write_mc_addr_list - write multicast addresses to MTA
3911 * @netdev: network interface device structure
Alexander Duyck68d480c2009-10-05 06:33:08 +00003912 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003913 * Writes multicast address list to the MTA hash table.
3914 * Returns: -ENOMEM on failure
3915 * 0 on no addresses written
3916 * X on writing X addresses to MTA
Alexander Duyck68d480c2009-10-05 06:33:08 +00003917 **/
3918static int igb_write_mc_addr_list(struct net_device *netdev)
3919{
3920 struct igb_adapter *adapter = netdev_priv(netdev);
3921 struct e1000_hw *hw = &adapter->hw;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003922 struct netdev_hw_addr *ha;
Alexander Duyck68d480c2009-10-05 06:33:08 +00003923 u8 *mta_list;
Alexander Duyck68d480c2009-10-05 06:33:08 +00003924 int i;
3925
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003926 if (netdev_mc_empty(netdev)) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003927 /* nothing to program, so clear mc list */
3928 igb_update_mc_addr_list(hw, NULL, 0);
3929 igb_restore_vf_multicasts(adapter);
3930 return 0;
3931 }
3932
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003933 mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003934 if (!mta_list)
3935 return -ENOMEM;
3936
Alexander Duyck68d480c2009-10-05 06:33:08 +00003937 /* The shared function expects a packed array of only addresses. */
Jiri Pirko48e2f182010-02-22 09:22:26 +00003938 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003939 netdev_for_each_mc_addr(ha, netdev)
3940 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003941
Alexander Duyck68d480c2009-10-05 06:33:08 +00003942 igb_update_mc_addr_list(hw, mta_list, i);
3943 kfree(mta_list);
3944
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00003945 return netdev_mc_count(netdev);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003946}
3947
3948/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003949 * igb_write_uc_addr_list - write unicast addresses to RAR table
3950 * @netdev: network interface device structure
Alexander Duyck68d480c2009-10-05 06:33:08 +00003951 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003952 * Writes unicast address list to the RAR table.
3953 * Returns: -ENOMEM on failure/insufficient address space
3954 * 0 on no addresses written
3955 * X on writing X addresses to the RAR table
Alexander Duyck68d480c2009-10-05 06:33:08 +00003956 **/
3957static int igb_write_uc_addr_list(struct net_device *netdev)
3958{
3959 struct igb_adapter *adapter = netdev_priv(netdev);
3960 struct e1000_hw *hw = &adapter->hw;
3961 unsigned int vfn = adapter->vfs_allocated_count;
3962 unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1);
3963 int count = 0;
3964
3965 /* return ENOMEM indicating insufficient memory for addresses */
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003966 if (netdev_uc_count(netdev) > rar_entries)
Alexander Duyck68d480c2009-10-05 06:33:08 +00003967 return -ENOMEM;
3968
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003969 if (!netdev_uc_empty(netdev) && rar_entries) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003970 struct netdev_hw_addr *ha;
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08003971
3972 netdev_for_each_uc_addr(ha, netdev) {
Alexander Duyck68d480c2009-10-05 06:33:08 +00003973 if (!rar_entries)
3974 break;
3975 igb_rar_set_qsel(adapter, ha->addr,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003976 rar_entries--,
3977 vfn);
Alexander Duyck68d480c2009-10-05 06:33:08 +00003978 count++;
3979 }
3980 }
3981 /* write the addresses in reverse order to avoid write combining */
3982 for (; rar_entries > 0 ; rar_entries--) {
3983 wr32(E1000_RAH(rar_entries), 0);
3984 wr32(E1000_RAL(rar_entries), 0);
3985 }
3986 wrfl();
3987
3988 return count;
3989}
3990
3991/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003992 * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
3993 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08003994 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00003995 * The set_rx_mode entry point is called whenever the unicast or multicast
3996 * address lists or the network interface flags are updated. This routine is
3997 * responsible for configuring the hardware for proper unicast, multicast,
3998 * promiscuous mode, and all-multi behavior.
Auke Kok9d5c8242008-01-24 02:22:38 -08003999 **/
Alexander Duyckff41f8d2009-09-03 14:48:56 +00004000static void igb_set_rx_mode(struct net_device *netdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08004001{
4002 struct igb_adapter *adapter = netdev_priv(netdev);
4003 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck68d480c2009-10-05 06:33:08 +00004004 unsigned int vfn = adapter->vfs_allocated_count;
4005 u32 rctl, vmolr = 0;
4006 int count;
Auke Kok9d5c8242008-01-24 02:22:38 -08004007
4008 /* Check for Promiscuous and All Multicast modes */
Auke Kok9d5c8242008-01-24 02:22:38 -08004009 rctl = rd32(E1000_RCTL);
4010
Alexander Duyck68d480c2009-10-05 06:33:08 +00004011 /* clear the effected bits */
4012 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE);
4013
Patrick McHardy746b9f02008-07-16 20:15:45 -07004014 if (netdev->flags & IFF_PROMISC) {
Greg Rose6f3dc3192013-03-26 06:19:41 +00004015 /* retain VLAN HW filtering if in VT mode */
Emil Tantilov7e448922013-07-26 05:46:36 -07004016 if (adapter->vfs_allocated_count)
Greg Rose6f3dc3192013-03-26 06:19:41 +00004017 rctl |= E1000_RCTL_VFE;
Auke Kok9d5c8242008-01-24 02:22:38 -08004018 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Alexander Duyck68d480c2009-10-05 06:33:08 +00004019 vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME);
Patrick McHardy746b9f02008-07-16 20:15:45 -07004020 } else {
Alexander Duyck68d480c2009-10-05 06:33:08 +00004021 if (netdev->flags & IFF_ALLMULTI) {
Patrick McHardy746b9f02008-07-16 20:15:45 -07004022 rctl |= E1000_RCTL_MPE;
Alexander Duyck68d480c2009-10-05 06:33:08 +00004023 vmolr |= E1000_VMOLR_MPME;
4024 } else {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004025 /* Write addresses to the MTA, if the attempt fails
Lucas De Marchi25985ed2011-03-30 22:57:33 -03004026 * then we should just turn on promiscuous mode so
Alexander Duyck68d480c2009-10-05 06:33:08 +00004027 * that we can at least receive multicast traffic
4028 */
4029 count = igb_write_mc_addr_list(netdev);
4030 if (count < 0) {
4031 rctl |= E1000_RCTL_MPE;
4032 vmolr |= E1000_VMOLR_MPME;
4033 } else if (count) {
4034 vmolr |= E1000_VMOLR_ROMPE;
4035 }
4036 }
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004037 /* Write addresses to available RAR registers, if there is not
Alexander Duyck68d480c2009-10-05 06:33:08 +00004038 * sufficient space to store all the addresses then enable
Lucas De Marchi25985ed2011-03-30 22:57:33 -03004039 * unicast promiscuous mode
Alexander Duyck68d480c2009-10-05 06:33:08 +00004040 */
4041 count = igb_write_uc_addr_list(netdev);
4042 if (count < 0) {
Alexander Duyckff41f8d2009-09-03 14:48:56 +00004043 rctl |= E1000_RCTL_UPE;
Alexander Duyck68d480c2009-10-05 06:33:08 +00004044 vmolr |= E1000_VMOLR_ROPE;
4045 }
Patrick McHardy78ed11a2008-07-16 20:16:14 -07004046 rctl |= E1000_RCTL_VFE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07004047 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004048 wr32(E1000_RCTL, rctl);
4049
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004050 /* In order to support SR-IOV and eventually VMDq it is necessary to set
Alexander Duyck68d480c2009-10-05 06:33:08 +00004051 * the VMOLR to enable the appropriate modes. Without this workaround
4052 * we will have issues with VLAN tag stripping not being done for frames
4053 * that are only arriving because we are the default pool
4054 */
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00004055 if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350))
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004056 return;
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004057
Alexander Duyck68d480c2009-10-05 06:33:08 +00004058 vmolr |= rd32(E1000_VMOLR(vfn)) &
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004059 ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE);
Alexander Duyck68d480c2009-10-05 06:33:08 +00004060 wr32(E1000_VMOLR(vfn), vmolr);
Alexander Duyck28fc06f2009-07-23 18:08:54 +00004061 igb_restore_vf_multicasts(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08004062}
4063
Greg Rose13800462010-11-06 02:08:26 +00004064static void igb_check_wvbr(struct igb_adapter *adapter)
4065{
4066 struct e1000_hw *hw = &adapter->hw;
4067 u32 wvbr = 0;
4068
4069 switch (hw->mac.type) {
4070 case e1000_82576:
4071 case e1000_i350:
Carolyn Wyborny81ad8072014-04-11 01:46:13 +00004072 wvbr = rd32(E1000_WVBR);
4073 if (!wvbr)
Greg Rose13800462010-11-06 02:08:26 +00004074 return;
4075 break;
4076 default:
4077 break;
4078 }
4079
4080 adapter->wvbr |= wvbr;
4081}
4082
4083#define IGB_STAGGERED_QUEUE_OFFSET 8
4084
4085static void igb_spoof_check(struct igb_adapter *adapter)
4086{
4087 int j;
4088
4089 if (!adapter->wvbr)
4090 return;
4091
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004092 for (j = 0; j < adapter->vfs_allocated_count; j++) {
Greg Rose13800462010-11-06 02:08:26 +00004093 if (adapter->wvbr & (1 << j) ||
4094 adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) {
4095 dev_warn(&adapter->pdev->dev,
4096 "Spoof event(s) detected on VF %d\n", j);
4097 adapter->wvbr &=
4098 ~((1 << j) |
4099 (1 << (j + IGB_STAGGERED_QUEUE_OFFSET)));
4100 }
4101 }
4102}
4103
Auke Kok9d5c8242008-01-24 02:22:38 -08004104/* Need to wait a few seconds after link up to get diagnostic information from
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004105 * the phy
4106 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004107static void igb_update_phy_info(unsigned long data)
4108{
4109 struct igb_adapter *adapter = (struct igb_adapter *) data;
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08004110 igb_get_phy_info(&adapter->hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08004111}
4112
4113/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004114 * igb_has_link - check shared code for link and determine up/down
4115 * @adapter: pointer to driver private info
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004116 **/
Nick Nunley31455352010-02-17 01:01:21 +00004117bool igb_has_link(struct igb_adapter *adapter)
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004118{
4119 struct e1000_hw *hw = &adapter->hw;
4120 bool link_active = false;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004121
4122 /* get_link_status is set on LSC (link status) interrupt or
4123 * rx sequence error interrupt. get_link_status will stay
4124 * false until the e1000_check_for_link establishes link
4125 * for copper adapters ONLY
4126 */
4127 switch (hw->phy.media_type) {
4128 case e1000_media_type_copper:
Akeem G Abodunrine5c33702013-06-06 01:31:09 +00004129 if (!hw->mac.get_link_status)
4130 return true;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004131 case e1000_media_type_internal_serdes:
Akeem G Abodunrine5c33702013-06-06 01:31:09 +00004132 hw->mac.ops.check_for_link(hw);
4133 link_active = !hw->mac.get_link_status;
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004134 break;
4135 default:
4136 case e1000_media_type_unknown:
4137 break;
4138 }
4139
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004140 if (((hw->mac.type == e1000_i210) ||
4141 (hw->mac.type == e1000_i211)) &&
4142 (hw->phy.id == I210_I_PHY_ID)) {
4143 if (!netif_carrier_ok(adapter->netdev)) {
4144 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
4145 } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) {
4146 adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE;
4147 adapter->link_check_timeout = jiffies;
4148 }
4149 }
4150
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004151 return link_active;
4152}
4153
Stefan Assmann563988d2011-04-05 04:27:15 +00004154static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event)
4155{
4156 bool ret = false;
4157 u32 ctrl_ext, thstat;
4158
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00004159 /* check for thermal sensor event on i350 copper only */
Stefan Assmann563988d2011-04-05 04:27:15 +00004160 if (hw->mac.type == e1000_i350) {
4161 thstat = rd32(E1000_THSTAT);
4162 ctrl_ext = rd32(E1000_CTRL_EXT);
4163
4164 if ((hw->phy.media_type == e1000_media_type_copper) &&
Akeem G. Abodunrin5c17a202013-01-29 10:15:31 +00004165 !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII))
Stefan Assmann563988d2011-04-05 04:27:15 +00004166 ret = !!(thstat & event);
Stefan Assmann563988d2011-04-05 04:27:15 +00004167 }
4168
4169 return ret;
4170}
4171
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004172/**
Carolyn Wyborny1516f0a2014-07-09 04:55:45 +00004173 * igb_check_lvmmc - check for malformed packets received
4174 * and indicated in LVMMC register
4175 * @adapter: pointer to adapter
4176 **/
4177static void igb_check_lvmmc(struct igb_adapter *adapter)
4178{
4179 struct e1000_hw *hw = &adapter->hw;
4180 u32 lvmmc;
4181
4182 lvmmc = rd32(E1000_LVMMC);
4183 if (lvmmc) {
4184 if (unlikely(net_ratelimit())) {
4185 netdev_warn(adapter->netdev,
4186 "malformed Tx packet detected and dropped, LVMMC:0x%08x\n",
4187 lvmmc);
4188 }
4189 }
4190}
4191
4192/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004193 * igb_watchdog - Timer Call-back
4194 * @data: pointer to adapter cast into an unsigned long
Auke Kok9d5c8242008-01-24 02:22:38 -08004195 **/
4196static void igb_watchdog(unsigned long data)
4197{
4198 struct igb_adapter *adapter = (struct igb_adapter *)data;
4199 /* Do the rest outside of interrupt context */
4200 schedule_work(&adapter->watchdog_task);
4201}
4202
4203static void igb_watchdog_task(struct work_struct *work)
4204{
4205 struct igb_adapter *adapter = container_of(work,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004206 struct igb_adapter,
4207 watchdog_task);
Auke Kok9d5c8242008-01-24 02:22:38 -08004208 struct e1000_hw *hw = &adapter->hw;
Koki Sanagic0ba4772013-01-16 11:05:53 +00004209 struct e1000_phy_info *phy = &hw->phy;
Auke Kok9d5c8242008-01-24 02:22:38 -08004210 struct net_device *netdev = adapter->netdev;
Stefan Assmann563988d2011-04-05 04:27:15 +00004211 u32 link;
Alexander Duyck7a6ea552008-08-26 04:25:03 -07004212 int i;
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004213 u32 connsw;
Auke Kok9d5c8242008-01-24 02:22:38 -08004214
Alexander Duyck4d6b7252009-02-06 23:16:24 +00004215 link = igb_has_link(adapter);
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004216
4217 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) {
4218 if (time_after(jiffies, (adapter->link_check_timeout + HZ)))
4219 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
4220 else
4221 link = false;
4222 }
4223
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004224 /* Force link down if we have fiber to swap to */
4225 if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
4226 if (hw->phy.media_type == e1000_media_type_copper) {
4227 connsw = rd32(E1000_CONNSW);
4228 if (!(connsw & E1000_CONNSW_AUTOSENSE_EN))
4229 link = 0;
4230 }
4231 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004232 if (link) {
Carolyn Wyborny2bdfc4e2013-10-17 05:23:01 +00004233 /* Perform a reset if the media type changed. */
4234 if (hw->dev_spec._82575.media_changed) {
4235 hw->dev_spec._82575.media_changed = false;
4236 adapter->flags |= IGB_FLAG_MEDIA_RESET;
4237 igb_reset(adapter);
4238 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004239 /* Cancel scheduled suspend requests. */
4240 pm_runtime_resume(netdev->dev.parent);
4241
Auke Kok9d5c8242008-01-24 02:22:38 -08004242 if (!netif_carrier_ok(netdev)) {
4243 u32 ctrl;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004244
Alexander Duyck330a6d62009-10-27 23:51:35 +00004245 hw->mac.ops.get_speed_and_duplex(hw,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004246 &adapter->link_speed,
4247 &adapter->link_duplex);
Auke Kok9d5c8242008-01-24 02:22:38 -08004248
4249 ctrl = rd32(E1000_CTRL);
Alexander Duyck527d47c2008-11-27 00:21:39 -08004250 /* Links status message must follow this format */
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004251 netdev_info(netdev,
4252 "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
Alexander Duyck559e9c42009-10-27 23:52:50 +00004253 netdev->name,
4254 adapter->link_speed,
4255 adapter->link_duplex == FULL_DUPLEX ?
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004256 "Full" : "Half",
4257 (ctrl & E1000_CTRL_TFCE) &&
4258 (ctrl & E1000_CTRL_RFCE) ? "RX/TX" :
4259 (ctrl & E1000_CTRL_RFCE) ? "RX" :
4260 (ctrl & E1000_CTRL_TFCE) ? "TX" : "None");
Auke Kok9d5c8242008-01-24 02:22:38 -08004261
Carolyn Wybornyf4c01e92014-03-12 03:58:22 +00004262 /* disable EEE if enabled */
4263 if ((adapter->flags & IGB_FLAG_EEE) &&
4264 (adapter->link_duplex == HALF_DUPLEX)) {
4265 dev_info(&adapter->pdev->dev,
4266 "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n");
4267 adapter->hw.dev_spec._82575.eee_disable = true;
4268 adapter->flags &= ~IGB_FLAG_EEE;
4269 }
4270
Koki Sanagic0ba4772013-01-16 11:05:53 +00004271 /* check if SmartSpeed worked */
4272 igb_check_downshift(hw);
4273 if (phy->speed_downgraded)
4274 netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n");
4275
Stefan Assmann563988d2011-04-05 04:27:15 +00004276 /* check for thermal sensor event */
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004277 if (igb_thermal_sensor_event(hw,
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004278 E1000_THSTAT_LINK_THROTTLE))
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004279 netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n");
Stefan Assmann563988d2011-04-05 04:27:15 +00004280
Emil Tantilovd07f3e32010-03-23 18:34:57 +00004281 /* adjust timeout factor according to speed/duplex */
Auke Kok9d5c8242008-01-24 02:22:38 -08004282 adapter->tx_timeout_factor = 1;
4283 switch (adapter->link_speed) {
4284 case SPEED_10:
Auke Kok9d5c8242008-01-24 02:22:38 -08004285 adapter->tx_timeout_factor = 14;
4286 break;
4287 case SPEED_100:
Auke Kok9d5c8242008-01-24 02:22:38 -08004288 /* maybe add some timeout factor ? */
4289 break;
4290 }
4291
4292 netif_carrier_on(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08004293
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004294 igb_ping_all_vfs(adapter);
Lior Levy17dc5662011-02-08 02:28:46 +00004295 igb_check_vf_rate_limit(adapter);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004296
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004297 /* link state has changed, schedule phy info update */
Auke Kok9d5c8242008-01-24 02:22:38 -08004298 if (!test_bit(__IGB_DOWN, &adapter->state))
4299 mod_timer(&adapter->phy_info_timer,
4300 round_jiffies(jiffies + 2 * HZ));
4301 }
4302 } else {
4303 if (netif_carrier_ok(netdev)) {
4304 adapter->link_speed = 0;
4305 adapter->link_duplex = 0;
Stefan Assmann563988d2011-04-05 04:27:15 +00004306
4307 /* check for thermal sensor event */
Jeff Kirsher876d2d62011-10-21 20:01:34 +00004308 if (igb_thermal_sensor_event(hw,
4309 E1000_THSTAT_PWR_DOWN)) {
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004310 netdev_err(netdev, "The network adapter was stopped because it overheated\n");
Carolyn Wyborny7ef5ed12011-03-12 08:59:47 +00004311 }
Stefan Assmann563988d2011-04-05 04:27:15 +00004312
Alexander Duyck527d47c2008-11-27 00:21:39 -08004313 /* Links status message must follow this format */
Carolyn Wybornyc75c4ed2014-04-11 01:45:17 +00004314 netdev_info(netdev, "igb: %s NIC Link is Down\n",
Alexander Duyck527d47c2008-11-27 00:21:39 -08004315 netdev->name);
Auke Kok9d5c8242008-01-24 02:22:38 -08004316 netif_carrier_off(netdev);
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004317
Alexander Duyck4ae196d2009-02-19 20:40:07 -08004318 igb_ping_all_vfs(adapter);
4319
Alexander Duyck4b1a9872009-02-06 23:19:50 +00004320 /* link state has changed, schedule phy info update */
Auke Kok9d5c8242008-01-24 02:22:38 -08004321 if (!test_bit(__IGB_DOWN, &adapter->state))
4322 mod_timer(&adapter->phy_info_timer,
4323 round_jiffies(jiffies + 2 * HZ));
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004324
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004325 /* link is down, time to check for alternate media */
4326 if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
4327 igb_check_swap_media(adapter);
4328 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
4329 schedule_work(&adapter->reset_task);
4330 /* return immediately */
4331 return;
4332 }
4333 }
Yan, Zheng749ab2c2012-01-04 20:23:37 +00004334 pm_schedule_suspend(netdev->dev.parent,
4335 MSEC_PER_SEC * 5);
Carolyn Wyborny56cec242013-10-17 05:36:26 +00004336
4337 /* also check for alternate media here */
4338 } else if (!netif_carrier_ok(netdev) &&
4339 (adapter->flags & IGB_FLAG_MAS_ENABLE)) {
4340 igb_check_swap_media(adapter);
4341 if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
4342 schedule_work(&adapter->reset_task);
4343 /* return immediately */
4344 return;
4345 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004346 }
4347 }
4348
Eric Dumazet12dcd862010-10-15 17:27:10 +00004349 spin_lock(&adapter->stats64_lock);
4350 igb_update_stats(adapter, &adapter->stats64);
4351 spin_unlock(&adapter->stats64_lock);
Auke Kok9d5c8242008-01-24 02:22:38 -08004352
Alexander Duyckdbabb062009-11-12 18:38:16 +00004353 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00004354 struct igb_ring *tx_ring = adapter->tx_ring[i];
Alexander Duyckdbabb062009-11-12 18:38:16 +00004355 if (!netif_carrier_ok(netdev)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004356 /* We've lost link, so the controller stops DMA,
4357 * but we've got queued Tx work that's never going
4358 * to get done, so reset controller to flush Tx.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004359 * (Do the reset outside of interrupt context).
4360 */
Alexander Duyckdbabb062009-11-12 18:38:16 +00004361 if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) {
4362 adapter->tx_timeout_count++;
4363 schedule_work(&adapter->reset_task);
4364 /* return immediately since reset is imminent */
4365 return;
4366 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004367 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004368
Alexander Duyckdbabb062009-11-12 18:38:16 +00004369 /* Force detection of hung controller every watchdog period */
Alexander Duyck6d095fa2011-08-26 07:46:19 +00004370 set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
Alexander Duyckdbabb062009-11-12 18:38:16 +00004371 }
Alexander Duyckf7ba2052009-10-27 23:48:51 +00004372
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004373 /* Cause software interrupt to ensure Rx ring is cleaned */
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00004374 if (adapter->flags & IGB_FLAG_HAS_MSIX) {
Alexander Duyck047e0032009-10-27 15:49:27 +00004375 u32 eics = 0;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004376
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00004377 for (i = 0; i < adapter->num_q_vectors; i++)
4378 eics |= adapter->q_vector[i]->eims_value;
Alexander Duyck7a6ea552008-08-26 04:25:03 -07004379 wr32(E1000_EICS, eics);
4380 } else {
4381 wr32(E1000_ICS, E1000_ICS_RXDMT0);
4382 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004383
Greg Rose13800462010-11-06 02:08:26 +00004384 igb_spoof_check(adapter);
Matthew Vickfc580752012-12-13 07:20:35 +00004385 igb_ptp_rx_hang(adapter);
Greg Rose13800462010-11-06 02:08:26 +00004386
Carolyn Wyborny1516f0a2014-07-09 04:55:45 +00004387 /* Check LVMMC register on i350/i354 only */
4388 if ((adapter->hw.mac.type == e1000_i350) ||
4389 (adapter->hw.mac.type == e1000_i354))
4390 igb_check_lvmmc(adapter);
4391
Auke Kok9d5c8242008-01-24 02:22:38 -08004392 /* Reset the timer */
Akeem G Abodunrinaa9b8cc2013-08-28 02:22:43 +00004393 if (!test_bit(__IGB_DOWN, &adapter->state)) {
4394 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)
4395 mod_timer(&adapter->watchdog_timer,
4396 round_jiffies(jiffies + HZ));
4397 else
4398 mod_timer(&adapter->watchdog_timer,
4399 round_jiffies(jiffies + 2 * HZ));
4400 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004401}
4402
4403enum latency_range {
4404 lowest_latency = 0,
4405 low_latency = 1,
4406 bulk_latency = 2,
4407 latency_invalid = 255
4408};
4409
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004410/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004411 * igb_update_ring_itr - update the dynamic ITR value based on packet size
4412 * @q_vector: pointer to q_vector
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004413 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004414 * Stores a new ITR value based on strictly on packet size. This
4415 * algorithm is less sophisticated than that used in igb_update_itr,
4416 * due to the difficulty of synchronizing statistics across multiple
4417 * receive rings. The divisors and thresholds used by this function
4418 * were determined based on theoretical maximum wire speed and testing
4419 * data, in order to minimize response time while increasing bulk
4420 * throughput.
Fernando Luis Vazquez Cao406d4962014-03-18 00:26:48 -07004421 * This functionality is controlled by ethtool's coalescing settings.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004422 * NOTE: This function is called only when operating in a multiqueue
4423 * receive environment.
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004424 **/
Alexander Duyck047e0032009-10-27 15:49:27 +00004425static void igb_update_ring_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08004426{
Alexander Duyck047e0032009-10-27 15:49:27 +00004427 int new_val = q_vector->itr_val;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004428 int avg_wire_size = 0;
Alexander Duyck047e0032009-10-27 15:49:27 +00004429 struct igb_adapter *adapter = q_vector->adapter;
Eric Dumazet12dcd862010-10-15 17:27:10 +00004430 unsigned int packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08004431
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004432 /* For non-gigabit speeds, just fix the interrupt rate at 4000
4433 * ints/sec - ITR timer value of 120 ticks.
4434 */
4435 if (adapter->link_speed != SPEED_1000) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004436 new_val = IGB_4K_ITR;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004437 goto set_itr_val;
4438 }
Alexander Duyck047e0032009-10-27 15:49:27 +00004439
Alexander Duyck0ba82992011-08-26 07:45:47 +00004440 packets = q_vector->rx.total_packets;
4441 if (packets)
4442 avg_wire_size = q_vector->rx.total_bytes / packets;
Eric Dumazet12dcd862010-10-15 17:27:10 +00004443
Alexander Duyck0ba82992011-08-26 07:45:47 +00004444 packets = q_vector->tx.total_packets;
4445 if (packets)
4446 avg_wire_size = max_t(u32, avg_wire_size,
4447 q_vector->tx.total_bytes / packets);
Alexander Duyck047e0032009-10-27 15:49:27 +00004448
4449 /* if avg_wire_size isn't set no work was done */
4450 if (!avg_wire_size)
4451 goto clear_counts;
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004452
4453 /* Add 24 bytes to size to account for CRC, preamble, and gap */
4454 avg_wire_size += 24;
4455
4456 /* Don't starve jumbo frames */
4457 avg_wire_size = min(avg_wire_size, 3000);
4458
4459 /* Give a little boost to mid-size frames */
4460 if ((avg_wire_size > 300) && (avg_wire_size < 1200))
4461 new_val = avg_wire_size / 3;
4462 else
4463 new_val = avg_wire_size / 2;
4464
Alexander Duyck0ba82992011-08-26 07:45:47 +00004465 /* conservative mode (itr 3) eliminates the lowest_latency setting */
4466 if (new_val < IGB_20K_ITR &&
4467 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
4468 (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
4469 new_val = IGB_20K_ITR;
Nick Nunleyabe1c362010-02-17 01:03:19 +00004470
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004471set_itr_val:
Alexander Duyck047e0032009-10-27 15:49:27 +00004472 if (new_val != q_vector->itr_val) {
4473 q_vector->itr_val = new_val;
4474 q_vector->set_itr = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004475 }
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004476clear_counts:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004477 q_vector->rx.total_bytes = 0;
4478 q_vector->rx.total_packets = 0;
4479 q_vector->tx.total_bytes = 0;
4480 q_vector->tx.total_packets = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004481}
4482
4483/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004484 * igb_update_itr - update the dynamic ITR value based on statistics
4485 * @q_vector: pointer to q_vector
4486 * @ring_container: ring info to update the itr for
4487 *
4488 * Stores a new ITR value based on packets and byte
4489 * counts during the last interrupt. The advantage of per interrupt
4490 * computation is faster updates and more accurate ITR for the current
4491 * traffic pattern. Constants in this function were computed
4492 * based on theoretical maximum wire speed and thresholds were set based
4493 * on testing data as well as attempting to minimize response time
4494 * while increasing bulk throughput.
Fernando Luis Vazquez Cao406d4962014-03-18 00:26:48 -07004495 * This functionality is controlled by ethtool's coalescing settings.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004496 * NOTE: These calculations are only valid when operating in a single-
4497 * queue environment.
Auke Kok9d5c8242008-01-24 02:22:38 -08004498 **/
Alexander Duyck0ba82992011-08-26 07:45:47 +00004499static void igb_update_itr(struct igb_q_vector *q_vector,
4500 struct igb_ring_container *ring_container)
Auke Kok9d5c8242008-01-24 02:22:38 -08004501{
Alexander Duyck0ba82992011-08-26 07:45:47 +00004502 unsigned int packets = ring_container->total_packets;
4503 unsigned int bytes = ring_container->total_bytes;
4504 u8 itrval = ring_container->itr;
Auke Kok9d5c8242008-01-24 02:22:38 -08004505
Alexander Duyck0ba82992011-08-26 07:45:47 +00004506 /* no packets, exit with status unchanged */
Auke Kok9d5c8242008-01-24 02:22:38 -08004507 if (packets == 0)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004508 return;
Auke Kok9d5c8242008-01-24 02:22:38 -08004509
Alexander Duyck0ba82992011-08-26 07:45:47 +00004510 switch (itrval) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004511 case lowest_latency:
4512 /* handle TSO and jumbo frames */
4513 if (bytes/packets > 8000)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004514 itrval = bulk_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004515 else if ((packets < 5) && (bytes > 512))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004516 itrval = low_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004517 break;
4518 case low_latency: /* 50 usec aka 20000 ints/s */
4519 if (bytes > 10000) {
4520 /* this if handles the TSO accounting */
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004521 if (bytes/packets > 8000)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004522 itrval = bulk_latency;
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004523 else if ((packets < 10) || ((bytes/packets) > 1200))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004524 itrval = bulk_latency;
Carolyn Wybornyd34a15a2014-04-11 01:45:23 +00004525 else if ((packets > 35))
Alexander Duyck0ba82992011-08-26 07:45:47 +00004526 itrval = lowest_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004527 } else if (bytes/packets > 2000) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004528 itrval = bulk_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004529 } else if (packets <= 2 && bytes < 512) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004530 itrval = lowest_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004531 }
4532 break;
4533 case bulk_latency: /* 250 usec aka 4000 ints/s */
4534 if (bytes > 25000) {
4535 if (packets > 35)
Alexander Duyck0ba82992011-08-26 07:45:47 +00004536 itrval = low_latency;
Alexander Duyck1e5c3d22009-02-12 18:17:21 +00004537 } else if (bytes < 1500) {
Alexander Duyck0ba82992011-08-26 07:45:47 +00004538 itrval = low_latency;
Auke Kok9d5c8242008-01-24 02:22:38 -08004539 }
4540 break;
4541 }
4542
Alexander Duyck0ba82992011-08-26 07:45:47 +00004543 /* clear work counters since we have the values we need */
4544 ring_container->total_bytes = 0;
4545 ring_container->total_packets = 0;
4546
4547 /* write updated itr to ring container */
4548 ring_container->itr = itrval;
Auke Kok9d5c8242008-01-24 02:22:38 -08004549}
4550
Alexander Duyck0ba82992011-08-26 07:45:47 +00004551static void igb_set_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08004552{
Alexander Duyck0ba82992011-08-26 07:45:47 +00004553 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck047e0032009-10-27 15:49:27 +00004554 u32 new_itr = q_vector->itr_val;
Alexander Duyck0ba82992011-08-26 07:45:47 +00004555 u8 current_itr = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004556
4557 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
4558 if (adapter->link_speed != SPEED_1000) {
4559 current_itr = 0;
Alexander Duyck0ba82992011-08-26 07:45:47 +00004560 new_itr = IGB_4K_ITR;
Auke Kok9d5c8242008-01-24 02:22:38 -08004561 goto set_itr_now;
4562 }
4563
Alexander Duyck0ba82992011-08-26 07:45:47 +00004564 igb_update_itr(q_vector, &q_vector->tx);
4565 igb_update_itr(q_vector, &q_vector->rx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004566
Alexander Duyck0ba82992011-08-26 07:45:47 +00004567 current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
Auke Kok9d5c8242008-01-24 02:22:38 -08004568
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004569 /* conservative mode (itr 3) eliminates the lowest_latency setting */
Alexander Duyck0ba82992011-08-26 07:45:47 +00004570 if (current_itr == lowest_latency &&
4571 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
4572 (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
Alexander Duyck6eb5a7f2008-07-08 15:14:44 -07004573 current_itr = low_latency;
4574
Auke Kok9d5c8242008-01-24 02:22:38 -08004575 switch (current_itr) {
4576 /* counts and packets in update_itr are dependent on these numbers */
4577 case lowest_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004578 new_itr = IGB_70K_ITR; /* 70,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004579 break;
4580 case low_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004581 new_itr = IGB_20K_ITR; /* 20,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004582 break;
4583 case bulk_latency:
Alexander Duyck0ba82992011-08-26 07:45:47 +00004584 new_itr = IGB_4K_ITR; /* 4,000 ints/sec */
Auke Kok9d5c8242008-01-24 02:22:38 -08004585 break;
4586 default:
4587 break;
4588 }
4589
4590set_itr_now:
Alexander Duyck047e0032009-10-27 15:49:27 +00004591 if (new_itr != q_vector->itr_val) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004592 /* this attempts to bias the interrupt rate towards Bulk
4593 * by adding intermediate steps when interrupt rate is
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004594 * increasing
4595 */
Alexander Duyck047e0032009-10-27 15:49:27 +00004596 new_itr = new_itr > q_vector->itr_val ?
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004597 max((new_itr * q_vector->itr_val) /
4598 (new_itr + (q_vector->itr_val >> 2)),
4599 new_itr) : new_itr;
Auke Kok9d5c8242008-01-24 02:22:38 -08004600 /* Don't write the value here; it resets the adapter's
4601 * internal timer, and causes us to delay far longer than
4602 * we should between interrupts. Instead, we write the ITR
4603 * value at the beginning of the next interrupt so the timing
4604 * ends up being correct.
4605 */
Alexander Duyck047e0032009-10-27 15:49:27 +00004606 q_vector->itr_val = new_itr;
4607 q_vector->set_itr = 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004608 }
Auke Kok9d5c8242008-01-24 02:22:38 -08004609}
4610
Stephen Hemmingerc50b52a2012-01-18 22:13:26 +00004611static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens,
4612 u32 type_tucmd, u32 mss_l4len_idx)
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004613{
4614 struct e1000_adv_tx_context_desc *context_desc;
4615 u16 i = tx_ring->next_to_use;
4616
4617 context_desc = IGB_TX_CTXTDESC(tx_ring, i);
4618
4619 i++;
4620 tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
4621
4622 /* set bits to identify this as an advanced context descriptor */
4623 type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
4624
4625 /* For 82575, context index must be unique per ring. */
Alexander Duyck866cff02011-08-26 07:45:36 +00004626 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004627 mss_l4len_idx |= tx_ring->reg_idx << 4;
4628
4629 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
4630 context_desc->seqnum_seed = 0;
4631 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd);
4632 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
4633}
4634
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004635static int igb_tso(struct igb_ring *tx_ring,
4636 struct igb_tx_buffer *first,
4637 u8 *hdr_len)
Auke Kok9d5c8242008-01-24 02:22:38 -08004638{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004639 struct sk_buff *skb = first->skb;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004640 u32 vlan_macip_lens, type_tucmd;
4641 u32 mss_l4len_idx, l4len;
Francois Romieu06c14e52014-03-30 03:14:11 +00004642 int err;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004643
Alexander Duycked6aa102012-11-13 04:03:22 +00004644 if (skb->ip_summed != CHECKSUM_PARTIAL)
4645 return 0;
4646
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004647 if (!skb_is_gso(skb))
4648 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004649
Francois Romieu06c14e52014-03-30 03:14:11 +00004650 err = skb_cow_head(skb, 0);
4651 if (err < 0)
4652 return err;
Auke Kok9d5c8242008-01-24 02:22:38 -08004653
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004654 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
4655 type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP;
Auke Kok9d5c8242008-01-24 02:22:38 -08004656
Joe Perches7c4d16f2014-03-13 05:19:14 +00004657 if (first->protocol == htons(ETH_P_IP)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004658 struct iphdr *iph = ip_hdr(skb);
4659 iph->tot_len = 0;
4660 iph->check = 0;
4661 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
4662 iph->daddr, 0,
4663 IPPROTO_TCP,
4664 0);
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004665 type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004666 first->tx_flags |= IGB_TX_FLAGS_TSO |
4667 IGB_TX_FLAGS_CSUM |
4668 IGB_TX_FLAGS_IPV4;
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08004669 } else if (skb_is_gso_v6(skb)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08004670 ipv6_hdr(skb)->payload_len = 0;
4671 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4672 &ipv6_hdr(skb)->daddr,
4673 0, IPPROTO_TCP, 0);
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004674 first->tx_flags |= IGB_TX_FLAGS_TSO |
4675 IGB_TX_FLAGS_CSUM;
Auke Kok9d5c8242008-01-24 02:22:38 -08004676 }
4677
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004678 /* compute header lengths */
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004679 l4len = tcp_hdrlen(skb);
4680 *hdr_len = skb_transport_offset(skb) + l4len;
Auke Kok9d5c8242008-01-24 02:22:38 -08004681
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004682 /* update gso size and bytecount with header size */
4683 first->gso_segs = skb_shinfo(skb)->gso_segs;
4684 first->bytecount += (first->gso_segs - 1) * *hdr_len;
4685
Auke Kok9d5c8242008-01-24 02:22:38 -08004686 /* MSS L4LEN IDX */
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004687 mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT;
4688 mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT;
Auke Kok9d5c8242008-01-24 02:22:38 -08004689
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004690 /* VLAN MACLEN IPLEN */
4691 vlan_macip_lens = skb_network_header_len(skb);
4692 vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004693 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
Auke Kok9d5c8242008-01-24 02:22:38 -08004694
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004695 igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004696
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004697 return 1;
Auke Kok9d5c8242008-01-24 02:22:38 -08004698}
4699
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004700static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first)
Auke Kok9d5c8242008-01-24 02:22:38 -08004701{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004702 struct sk_buff *skb = first->skb;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004703 u32 vlan_macip_lens = 0;
4704 u32 mss_l4len_idx = 0;
4705 u32 type_tucmd = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004706
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004707 if (skb->ip_summed != CHECKSUM_PARTIAL) {
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004708 if (!(first->tx_flags & IGB_TX_FLAGS_VLAN))
4709 return;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004710 } else {
4711 u8 l4_hdr = 0;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00004712
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004713 switch (first->protocol) {
Joe Perches7c4d16f2014-03-13 05:19:14 +00004714 case htons(ETH_P_IP):
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004715 vlan_macip_lens |= skb_network_header_len(skb);
4716 type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
4717 l4_hdr = ip_hdr(skb)->protocol;
4718 break;
Joe Perches7c4d16f2014-03-13 05:19:14 +00004719 case htons(ETH_P_IPV6):
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004720 vlan_macip_lens |= skb_network_header_len(skb);
4721 l4_hdr = ipv6_hdr(skb)->nexthdr;
4722 break;
4723 default:
4724 if (unlikely(net_ratelimit())) {
4725 dev_warn(tx_ring->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004726 "partial checksum but proto=%x!\n",
4727 first->protocol);
Arthur Jonesfa4a7ef2009-03-21 16:55:07 -07004728 }
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004729 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08004730 }
4731
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004732 switch (l4_hdr) {
4733 case IPPROTO_TCP:
4734 type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
4735 mss_l4len_idx = tcp_hdrlen(skb) <<
4736 E1000_ADVTXD_L4LEN_SHIFT;
4737 break;
4738 case IPPROTO_SCTP:
4739 type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
4740 mss_l4len_idx = sizeof(struct sctphdr) <<
4741 E1000_ADVTXD_L4LEN_SHIFT;
4742 break;
4743 case IPPROTO_UDP:
4744 mss_l4len_idx = sizeof(struct udphdr) <<
4745 E1000_ADVTXD_L4LEN_SHIFT;
4746 break;
4747 default:
4748 if (unlikely(net_ratelimit())) {
4749 dev_warn(tx_ring->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004750 "partial checksum but l4 proto=%x!\n",
4751 l4_hdr);
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004752 }
4753 break;
4754 }
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004755
4756 /* update TX checksum flag */
4757 first->tx_flags |= IGB_TX_FLAGS_CSUM;
Auke Kok9d5c8242008-01-24 02:22:38 -08004758 }
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004759
4760 vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004761 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00004762
4763 igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
Auke Kok9d5c8242008-01-24 02:22:38 -08004764}
4765
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004766#define IGB_SET_FLAG(_input, _flag, _result) \
4767 ((_flag <= _result) ? \
4768 ((u32)(_input & _flag) * (_result / _flag)) : \
4769 ((u32)(_input & _flag) / (_flag / _result)))
4770
4771static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
Alexander Duycke032afc2011-08-26 07:44:48 +00004772{
4773 /* set type for advanced descriptor with frame checksum insertion */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004774 u32 cmd_type = E1000_ADVTXD_DTYP_DATA |
4775 E1000_ADVTXD_DCMD_DEXT |
4776 E1000_ADVTXD_DCMD_IFCS;
Alexander Duycke032afc2011-08-26 07:44:48 +00004777
4778 /* set HW vlan bit if vlan is present */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004779 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN,
4780 (E1000_ADVTXD_DCMD_VLE));
Alexander Duycke032afc2011-08-26 07:44:48 +00004781
4782 /* set segmentation bits for TSO */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004783 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO,
4784 (E1000_ADVTXD_DCMD_TSE));
4785
4786 /* set timestamp bit if present */
4787 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP,
4788 (E1000_ADVTXD_MAC_TSTAMP));
4789
4790 /* insert frame checksum */
4791 cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS);
Alexander Duycke032afc2011-08-26 07:44:48 +00004792
4793 return cmd_type;
4794}
4795
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004796static void igb_tx_olinfo_status(struct igb_ring *tx_ring,
4797 union e1000_adv_tx_desc *tx_desc,
4798 u32 tx_flags, unsigned int paylen)
Alexander Duycke032afc2011-08-26 07:44:48 +00004799{
4800 u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT;
4801
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004802 /* 82575 requires a unique index per ring */
4803 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
Alexander Duycke032afc2011-08-26 07:44:48 +00004804 olinfo_status |= tx_ring->reg_idx << 4;
4805
4806 /* insert L4 checksum */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004807 olinfo_status |= IGB_SET_FLAG(tx_flags,
4808 IGB_TX_FLAGS_CSUM,
4809 (E1000_TXD_POPTS_TXSM << 8));
Alexander Duycke032afc2011-08-26 07:44:48 +00004810
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004811 /* insert IPv4 checksum */
4812 olinfo_status |= IGB_SET_FLAG(tx_flags,
4813 IGB_TX_FLAGS_IPV4,
4814 (E1000_TXD_POPTS_IXSM << 8));
Alexander Duycke032afc2011-08-26 07:44:48 +00004815
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004816 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Alexander Duycke032afc2011-08-26 07:44:48 +00004817}
4818
David S. Miller6f19e122014-08-28 01:39:31 -07004819static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
4820{
4821 struct net_device *netdev = tx_ring->netdev;
4822
4823 netif_stop_subqueue(netdev, tx_ring->queue_index);
4824
4825 /* Herbert's original patch had:
4826 * smp_mb__after_netif_stop_queue();
4827 * but since that doesn't exist yet, just open code it.
4828 */
4829 smp_mb();
4830
4831 /* We need to check again in a case another CPU has just
4832 * made room available.
4833 */
4834 if (igb_desc_unused(tx_ring) < size)
4835 return -EBUSY;
4836
4837 /* A reprieve! */
4838 netif_wake_subqueue(netdev, tx_ring->queue_index);
4839
4840 u64_stats_update_begin(&tx_ring->tx_syncp2);
4841 tx_ring->tx_stats.restart_queue2++;
4842 u64_stats_update_end(&tx_ring->tx_syncp2);
4843
4844 return 0;
4845}
4846
4847static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
4848{
4849 if (igb_desc_unused(tx_ring) >= size)
4850 return 0;
4851 return __igb_maybe_stop_tx(tx_ring, size);
4852}
4853
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004854static void igb_tx_map(struct igb_ring *tx_ring,
4855 struct igb_tx_buffer *first,
Alexander Duyckebe42d12011-08-26 07:45:09 +00004856 const u8 hdr_len)
Auke Kok9d5c8242008-01-24 02:22:38 -08004857{
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004858 struct sk_buff *skb = first->skb;
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004859 struct igb_tx_buffer *tx_buffer;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004860 union e1000_adv_tx_desc *tx_desc;
Alexander Duyck80d07592012-11-13 04:03:24 +00004861 struct skb_frag_struct *frag;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004862 dma_addr_t dma;
Alexander Duyck80d07592012-11-13 04:03:24 +00004863 unsigned int data_len, size;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00004864 u32 tx_flags = first->tx_flags;
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004865 u32 cmd_type = igb_tx_cmd_type(skb, tx_flags);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004866 u16 i = tx_ring->next_to_use;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004867
4868 tx_desc = IGB_TX_DESC(tx_ring, i);
4869
Alexander Duyck80d07592012-11-13 04:03:24 +00004870 igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len);
4871
4872 size = skb_headlen(skb);
4873 data_len = skb->data_len;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004874
4875 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
Auke Kok9d5c8242008-01-24 02:22:38 -08004876
Alexander Duyck80d07592012-11-13 04:03:24 +00004877 tx_buffer = first;
Alexander Duyck2bbfebe2011-08-26 07:44:59 +00004878
Alexander Duyck80d07592012-11-13 04:03:24 +00004879 for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
4880 if (dma_mapping_error(tx_ring->dev, dma))
4881 goto dma_error;
4882
4883 /* record length, and DMA address */
4884 dma_unmap_len_set(tx_buffer, len, size);
4885 dma_unmap_addr_set(tx_buffer, dma, dma);
4886
4887 tx_desc->read.buffer_addr = cpu_to_le64(dma);
4888
Alexander Duyckebe42d12011-08-26 07:45:09 +00004889 while (unlikely(size > IGB_MAX_DATA_PER_TXD)) {
4890 tx_desc->read.cmd_type_len =
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004891 cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD);
Auke Kok9d5c8242008-01-24 02:22:38 -08004892
Alexander Duyckebe42d12011-08-26 07:45:09 +00004893 i++;
4894 tx_desc++;
4895 if (i == tx_ring->count) {
4896 tx_desc = IGB_TX_DESC(tx_ring, 0);
4897 i = 0;
4898 }
Alexander Duyck80d07592012-11-13 04:03:24 +00004899 tx_desc->read.olinfo_status = 0;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004900
4901 dma += IGB_MAX_DATA_PER_TXD;
4902 size -= IGB_MAX_DATA_PER_TXD;
4903
Alexander Duyckebe42d12011-08-26 07:45:09 +00004904 tx_desc->read.buffer_addr = cpu_to_le64(dma);
4905 }
4906
4907 if (likely(!data_len))
4908 break;
4909
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004910 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004911
Alexander Duyck65689fe2009-03-20 00:17:43 +00004912 i++;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004913 tx_desc++;
4914 if (i == tx_ring->count) {
4915 tx_desc = IGB_TX_DESC(tx_ring, 0);
Alexander Duyck65689fe2009-03-20 00:17:43 +00004916 i = 0;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004917 }
Alexander Duyck80d07592012-11-13 04:03:24 +00004918 tx_desc->read.olinfo_status = 0;
Alexander Duyck65689fe2009-03-20 00:17:43 +00004919
Eric Dumazet9e903e02011-10-18 21:00:24 +00004920 size = skb_frag_size(frag);
Alexander Duyckebe42d12011-08-26 07:45:09 +00004921 data_len -= size;
4922
4923 dma = skb_frag_dma_map(tx_ring->dev, frag, 0,
Alexander Duyck80d07592012-11-13 04:03:24 +00004924 size, DMA_TO_DEVICE);
Alexander Duyck6366ad32009-12-02 16:47:18 +00004925
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004926 tx_buffer = &tx_ring->tx_buffer_info[i];
Auke Kok9d5c8242008-01-24 02:22:38 -08004927 }
4928
Alexander Duyckebe42d12011-08-26 07:45:09 +00004929 /* write last descriptor with RS and EOP bits */
Alexander Duyck1d9daf42012-11-13 04:03:23 +00004930 cmd_type |= size | IGB_TXD_DCMD;
4931 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
Alexander Duyck8542db02011-08-26 07:44:43 +00004932
Alexander Duyck80d07592012-11-13 04:03:24 +00004933 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
4934
Alexander Duyck8542db02011-08-26 07:44:43 +00004935 /* set the timestamp */
4936 first->time_stamp = jiffies;
4937
Jeff Kirsherb980ac12013-02-23 07:29:56 +00004938 /* Force memory writes to complete before letting h/w know there
Alexander Duyckebe42d12011-08-26 07:45:09 +00004939 * are new descriptors to fetch. (Only applicable for weak-ordered
4940 * memory model archs, such as IA-64).
4941 *
4942 * We also need this memory barrier to make certain all of the
4943 * status bits have been updated before next_to_watch is written.
4944 */
Auke Kok9d5c8242008-01-24 02:22:38 -08004945 wmb();
4946
Alexander Duyckebe42d12011-08-26 07:45:09 +00004947 /* set next_to_watch value indicating a packet is present */
4948 first->next_to_watch = tx_desc;
4949
4950 i++;
4951 if (i == tx_ring->count)
4952 i = 0;
4953
Auke Kok9d5c8242008-01-24 02:22:38 -08004954 tx_ring->next_to_use = i;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004955
David S. Miller6f19e122014-08-28 01:39:31 -07004956 /* Make sure there is space in the ring for the next send. */
4957 igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
4958
4959 if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
David S. Miller0b725a22014-08-25 15:51:53 -07004960 writel(i, tx_ring->tail);
4961
4962 /* we need this if more than one processor can write to our tail
4963 * at a time, it synchronizes IO on IA64/Altix systems
4964 */
4965 mmiowb();
4966 }
Alexander Duyckebe42d12011-08-26 07:45:09 +00004967 return;
4968
4969dma_error:
4970 dev_err(tx_ring->dev, "TX DMA map failed\n");
4971
4972 /* clear dma mappings for failed tx_buffer_info map */
4973 for (;;) {
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00004974 tx_buffer = &tx_ring->tx_buffer_info[i];
4975 igb_unmap_and_free_tx_resource(tx_ring, tx_buffer);
4976 if (tx_buffer == first)
Alexander Duyckebe42d12011-08-26 07:45:09 +00004977 break;
4978 if (i == 0)
4979 i = tx_ring->count;
4980 i--;
4981 }
4982
4983 tx_ring->next_to_use = i;
Auke Kok9d5c8242008-01-24 02:22:38 -08004984}
4985
Alexander Duyckcd392f52011-08-26 07:43:59 +00004986netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
4987 struct igb_ring *tx_ring)
Auke Kok9d5c8242008-01-24 02:22:38 -08004988{
Alexander Duyck8542db02011-08-26 07:44:43 +00004989 struct igb_tx_buffer *first;
Alexander Duyckebe42d12011-08-26 07:45:09 +00004990 int tso;
Nick Nunley91d4ee32010-02-17 01:04:56 +00004991 u32 tx_flags = 0;
Alexander Duyck2ee52ad2015-05-06 21:11:45 -07004992 unsigned short f;
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004993 u16 count = TXD_USE_COUNT(skb_headlen(skb));
Alexander Duyck31f6adb2011-08-26 07:44:53 +00004994 __be16 protocol = vlan_get_protocol(skb);
Nick Nunley91d4ee32010-02-17 01:04:56 +00004995 u8 hdr_len = 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08004996
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00004997 /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD,
4998 * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD,
Auke Kok9d5c8242008-01-24 02:22:38 -08004999 * + 2 desc gap to keep tail from touching head,
Auke Kok9d5c8242008-01-24 02:22:38 -08005000 * + 1 desc for context descriptor,
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00005001 * otherwise try next time
5002 */
Alexander Duyck2ee52ad2015-05-06 21:11:45 -07005003 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
5004 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00005005
5006 if (igb_maybe_stop_tx(tx_ring, count + 3)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08005007 /* this is a hard error */
Auke Kok9d5c8242008-01-24 02:22:38 -08005008 return NETDEV_TX_BUSY;
5009 }
Patrick Ohly33af6bc2009-02-12 05:03:43 +00005010
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005011 /* record the location of the first descriptor for this packet */
5012 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
5013 first->skb = skb;
5014 first->bytecount = skb->len;
5015 first->gso_segs = 1;
5016
Alexander Duyckb646c222013-02-07 08:55:46 +00005017 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
5018 struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
Matthew Vick1f6e8172012-08-18 07:26:33 +00005019
Jakub Kicinskied4420a2014-03-15 14:55:32 +00005020 if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS,
5021 &adapter->state)) {
Alexander Duyckb646c222013-02-07 08:55:46 +00005022 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
5023 tx_flags |= IGB_TX_FLAGS_TSTAMP;
5024
5025 adapter->ptp_tx_skb = skb_get(skb);
5026 adapter->ptp_tx_start = jiffies;
5027 if (adapter->hw.mac.type == e1000_82576)
5028 schedule_work(&adapter->ptp_tx_work);
5029 }
Patrick Ohly33af6bc2009-02-12 05:03:43 +00005030 }
Auke Kok9d5c8242008-01-24 02:22:38 -08005031
Jakub Kicinskiafc835d2014-03-15 14:55:26 +00005032 skb_tx_timestamp(skb);
5033
Jiri Pirkodf8a39d2015-01-13 17:13:44 +01005034 if (skb_vlan_tag_present(skb)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08005035 tx_flags |= IGB_TX_FLAGS_VLAN;
Jiri Pirkodf8a39d2015-01-13 17:13:44 +01005036 tx_flags |= (skb_vlan_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
Auke Kok9d5c8242008-01-24 02:22:38 -08005037 }
5038
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005039 /* record initial flags and protocol */
5040 first->tx_flags = tx_flags;
5041 first->protocol = protocol;
Alexander Duyckcdfd01fc2009-10-27 23:50:57 +00005042
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005043 tso = igb_tso(tx_ring, first, &hdr_len);
5044 if (tso < 0)
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005045 goto out_drop;
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005046 else if (!tso)
5047 igb_tx_csum(tx_ring, first);
Auke Kok9d5c8242008-01-24 02:22:38 -08005048
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005049 igb_tx_map(tx_ring, first, hdr_len);
Alexander Duyck85ad76b2009-10-27 15:52:46 +00005050
Auke Kok9d5c8242008-01-24 02:22:38 -08005051 return NETDEV_TX_OK;
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005052
5053out_drop:
Alexander Duyck7af40ad92011-08-26 07:45:15 +00005054 igb_unmap_and_free_tx_resource(tx_ring, first);
5055
Alexander Duyck7d13a7d2011-08-26 07:44:32 +00005056 return NETDEV_TX_OK;
Auke Kok9d5c8242008-01-24 02:22:38 -08005057}
5058
David S. Miller0b725a22014-08-25 15:51:53 -07005059static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter,
5060 struct sk_buff *skb)
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005061{
David S. Miller0b725a22014-08-25 15:51:53 -07005062 unsigned int r_idx = skb->queue_mapping;
5063
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005064 if (r_idx >= adapter->num_tx_queues)
5065 r_idx = r_idx % adapter->num_tx_queues;
5066
5067 return adapter->tx_ring[r_idx];
5068}
5069
Alexander Duyckcd392f52011-08-26 07:43:59 +00005070static netdev_tx_t igb_xmit_frame(struct sk_buff *skb,
5071 struct net_device *netdev)
Auke Kok9d5c8242008-01-24 02:22:38 -08005072{
5073 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyckb1a436c2009-10-27 15:54:43 +00005074
5075 if (test_bit(__IGB_DOWN, &adapter->state)) {
5076 dev_kfree_skb_any(skb);
5077 return NETDEV_TX_OK;
5078 }
5079
5080 if (skb->len <= 0) {
5081 dev_kfree_skb_any(skb);
5082 return NETDEV_TX_OK;
5083 }
5084
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005085 /* The minimum packet size with TCTL.PSP set is 17 so pad the skb
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005086 * in order to meet this minimum size requirement.
5087 */
Alexander Duycka94d9e22014-12-03 08:17:39 -08005088 if (skb_put_padto(skb, 17))
5089 return NETDEV_TX_OK;
Auke Kok9d5c8242008-01-24 02:22:38 -08005090
Alexander Duyck1cc3bd82011-08-26 07:44:10 +00005091 return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb));
Auke Kok9d5c8242008-01-24 02:22:38 -08005092}
5093
5094/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005095 * igb_tx_timeout - Respond to a Tx Hang
5096 * @netdev: network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08005097 **/
5098static void igb_tx_timeout(struct net_device *netdev)
5099{
5100 struct igb_adapter *adapter = netdev_priv(netdev);
5101 struct e1000_hw *hw = &adapter->hw;
5102
5103 /* Do the reset outside of interrupt context */
5104 adapter->tx_timeout_count++;
Alexander Duyckf7ba2052009-10-27 23:48:51 +00005105
Alexander Duyck06218a82011-08-26 07:46:55 +00005106 if (hw->mac.type >= e1000_82580)
Alexander Duyck55cac242009-11-19 12:42:21 +00005107 hw->dev_spec._82575.global_device_reset = true;
5108
Auke Kok9d5c8242008-01-24 02:22:38 -08005109 schedule_work(&adapter->reset_task);
Alexander Duyck265de402009-02-06 23:22:52 +00005110 wr32(E1000_EICS,
5111 (adapter->eims_enable_mask & ~adapter->eims_other));
Auke Kok9d5c8242008-01-24 02:22:38 -08005112}
5113
5114static void igb_reset_task(struct work_struct *work)
5115{
5116 struct igb_adapter *adapter;
5117 adapter = container_of(work, struct igb_adapter, reset_task);
5118
Taku Izumic97ec422010-04-27 14:39:30 +00005119 igb_dump(adapter);
5120 netdev_err(adapter->netdev, "Reset adapter\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005121 igb_reinit_locked(adapter);
5122}
5123
5124/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005125 * igb_get_stats64 - Get System Network Statistics
5126 * @netdev: network interface device structure
5127 * @stats: rtnl_link_stats64 pointer
Auke Kok9d5c8242008-01-24 02:22:38 -08005128 **/
Eric Dumazet12dcd862010-10-15 17:27:10 +00005129static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005130 struct rtnl_link_stats64 *stats)
Auke Kok9d5c8242008-01-24 02:22:38 -08005131{
Eric Dumazet12dcd862010-10-15 17:27:10 +00005132 struct igb_adapter *adapter = netdev_priv(netdev);
5133
5134 spin_lock(&adapter->stats64_lock);
5135 igb_update_stats(adapter, &adapter->stats64);
5136 memcpy(stats, &adapter->stats64, sizeof(*stats));
5137 spin_unlock(&adapter->stats64_lock);
5138
5139 return stats;
Auke Kok9d5c8242008-01-24 02:22:38 -08005140}
5141
5142/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005143 * igb_change_mtu - Change the Maximum Transfer Unit
5144 * @netdev: network interface device structure
5145 * @new_mtu: new value for maximum frame size
Auke Kok9d5c8242008-01-24 02:22:38 -08005146 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005147 * Returns 0 on success, negative on failure
Auke Kok9d5c8242008-01-24 02:22:38 -08005148 **/
5149static int igb_change_mtu(struct net_device *netdev, int new_mtu)
5150{
5151 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005152 struct pci_dev *pdev = adapter->pdev;
Alexander Duyck153285f2011-08-26 07:43:32 +00005153 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
Auke Kok9d5c8242008-01-24 02:22:38 -08005154
Alexander Duyckc809d222009-10-27 23:52:13 +00005155 if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
Alexander Duyck090b1792009-10-27 23:51:55 +00005156 dev_err(&pdev->dev, "Invalid MTU setting\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005157 return -EINVAL;
5158 }
5159
Alexander Duyck153285f2011-08-26 07:43:32 +00005160#define MAX_STD_JUMBO_FRAME_SIZE 9238
Auke Kok9d5c8242008-01-24 02:22:38 -08005161 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
Alexander Duyck090b1792009-10-27 23:51:55 +00005162 dev_err(&pdev->dev, "MTU > 9216 not supported.\n");
Auke Kok9d5c8242008-01-24 02:22:38 -08005163 return -EINVAL;
5164 }
5165
Alexander Duyck2ccd9942013-07-16 00:20:34 +00005166 /* adjust max frame to be at least the size of a standard frame */
5167 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
5168 max_frame = ETH_FRAME_LEN + ETH_FCS_LEN;
5169
Auke Kok9d5c8242008-01-24 02:22:38 -08005170 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
Carolyn Wyborny0d451e72014-04-11 01:46:40 +00005171 usleep_range(1000, 2000);
Alexander Duyck73cd78f2009-02-12 18:16:59 +00005172
Auke Kok9d5c8242008-01-24 02:22:38 -08005173 /* igb_down has a dependency on max_frame_size */
5174 adapter->max_frame_size = max_frame;
Alexander Duyck559e9c42009-10-27 23:52:50 +00005175
Alexander Duyck4c844852009-10-27 15:52:07 +00005176 if (netif_running(netdev))
5177 igb_down(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08005178
Alexander Duyck090b1792009-10-27 23:51:55 +00005179 dev_info(&pdev->dev, "changing MTU from %d to %d\n",
Auke Kok9d5c8242008-01-24 02:22:38 -08005180 netdev->mtu, new_mtu);
5181 netdev->mtu = new_mtu;
5182
5183 if (netif_running(netdev))
5184 igb_up(adapter);
5185 else
5186 igb_reset(adapter);
5187
5188 clear_bit(__IGB_RESETTING, &adapter->state);
5189
5190 return 0;
5191}
5192
5193/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005194 * igb_update_stats - Update the board statistics counters
5195 * @adapter: board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08005196 **/
Eric Dumazet12dcd862010-10-15 17:27:10 +00005197void igb_update_stats(struct igb_adapter *adapter,
5198 struct rtnl_link_stats64 *net_stats)
Auke Kok9d5c8242008-01-24 02:22:38 -08005199{
5200 struct e1000_hw *hw = &adapter->hw;
5201 struct pci_dev *pdev = adapter->pdev;
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005202 u32 reg, mpc;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005203 int i;
5204 u64 bytes, packets;
Eric Dumazet12dcd862010-10-15 17:27:10 +00005205 unsigned int start;
5206 u64 _bytes, _packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08005207
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005208 /* Prevent stats update while adapter is being reset, or if the pci
Auke Kok9d5c8242008-01-24 02:22:38 -08005209 * connection is down.
5210 */
5211 if (adapter->link_speed == 0)
5212 return;
5213 if (pci_channel_offline(pdev))
5214 return;
5215
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005216 bytes = 0;
5217 packets = 0;
Akeem G Abodunrin7f901282013-06-27 09:10:23 +00005218
5219 rcu_read_lock();
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005220 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00005221 struct igb_ring *ring = adapter->rx_ring[i];
Todd Fujinakae66c0832014-04-08 05:36:15 +00005222 u32 rqdpc = rd32(E1000_RQDPC(i));
5223 if (hw->mac.type >= e1000_i210)
5224 wr32(E1000_RQDPC(i), 0);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005225
Alexander Duyckae1c07a2012-08-08 05:23:22 +00005226 if (rqdpc) {
5227 ring->rx_stats.drops += rqdpc;
5228 net_stats->rx_fifo_errors += rqdpc;
5229 }
Eric Dumazet12dcd862010-10-15 17:27:10 +00005230
5231 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07005232 start = u64_stats_fetch_begin_irq(&ring->rx_syncp);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005233 _bytes = ring->rx_stats.bytes;
5234 _packets = ring->rx_stats.packets;
Eric W. Biederman57a77442014-03-13 21:26:42 -07005235 } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start));
Eric Dumazet12dcd862010-10-15 17:27:10 +00005236 bytes += _bytes;
5237 packets += _packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005238 }
5239
Alexander Duyck128e45e2009-11-12 18:37:38 +00005240 net_stats->rx_bytes = bytes;
5241 net_stats->rx_packets = packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005242
5243 bytes = 0;
5244 packets = 0;
5245 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyck3025a442010-02-17 01:02:39 +00005246 struct igb_ring *ring = adapter->tx_ring[i];
Eric Dumazet12dcd862010-10-15 17:27:10 +00005247 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07005248 start = u64_stats_fetch_begin_irq(&ring->tx_syncp);
Eric Dumazet12dcd862010-10-15 17:27:10 +00005249 _bytes = ring->tx_stats.bytes;
5250 _packets = ring->tx_stats.packets;
Eric W. Biederman57a77442014-03-13 21:26:42 -07005251 } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start));
Eric Dumazet12dcd862010-10-15 17:27:10 +00005252 bytes += _bytes;
5253 packets += _packets;
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005254 }
Alexander Duyck128e45e2009-11-12 18:37:38 +00005255 net_stats->tx_bytes = bytes;
5256 net_stats->tx_packets = packets;
Akeem G Abodunrin7f901282013-06-27 09:10:23 +00005257 rcu_read_unlock();
Alexander Duyck3f9c0162009-10-27 23:48:12 +00005258
5259 /* read stats registers */
Auke Kok9d5c8242008-01-24 02:22:38 -08005260 adapter->stats.crcerrs += rd32(E1000_CRCERRS);
5261 adapter->stats.gprc += rd32(E1000_GPRC);
5262 adapter->stats.gorc += rd32(E1000_GORCL);
5263 rd32(E1000_GORCH); /* clear GORCL */
5264 adapter->stats.bprc += rd32(E1000_BPRC);
5265 adapter->stats.mprc += rd32(E1000_MPRC);
5266 adapter->stats.roc += rd32(E1000_ROC);
5267
5268 adapter->stats.prc64 += rd32(E1000_PRC64);
5269 adapter->stats.prc127 += rd32(E1000_PRC127);
5270 adapter->stats.prc255 += rd32(E1000_PRC255);
5271 adapter->stats.prc511 += rd32(E1000_PRC511);
5272 adapter->stats.prc1023 += rd32(E1000_PRC1023);
5273 adapter->stats.prc1522 += rd32(E1000_PRC1522);
5274 adapter->stats.symerrs += rd32(E1000_SYMERRS);
5275 adapter->stats.sec += rd32(E1000_SEC);
5276
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005277 mpc = rd32(E1000_MPC);
5278 adapter->stats.mpc += mpc;
5279 net_stats->rx_fifo_errors += mpc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005280 adapter->stats.scc += rd32(E1000_SCC);
5281 adapter->stats.ecol += rd32(E1000_ECOL);
5282 adapter->stats.mcc += rd32(E1000_MCC);
5283 adapter->stats.latecol += rd32(E1000_LATECOL);
5284 adapter->stats.dc += rd32(E1000_DC);
5285 adapter->stats.rlec += rd32(E1000_RLEC);
5286 adapter->stats.xonrxc += rd32(E1000_XONRXC);
5287 adapter->stats.xontxc += rd32(E1000_XONTXC);
5288 adapter->stats.xoffrxc += rd32(E1000_XOFFRXC);
5289 adapter->stats.xofftxc += rd32(E1000_XOFFTXC);
5290 adapter->stats.fcruc += rd32(E1000_FCRUC);
5291 adapter->stats.gptc += rd32(E1000_GPTC);
5292 adapter->stats.gotc += rd32(E1000_GOTCL);
5293 rd32(E1000_GOTCH); /* clear GOTCL */
Mitch Williamsfa3d9a62010-03-23 18:34:38 +00005294 adapter->stats.rnbc += rd32(E1000_RNBC);
Auke Kok9d5c8242008-01-24 02:22:38 -08005295 adapter->stats.ruc += rd32(E1000_RUC);
5296 adapter->stats.rfc += rd32(E1000_RFC);
5297 adapter->stats.rjc += rd32(E1000_RJC);
5298 adapter->stats.tor += rd32(E1000_TORH);
5299 adapter->stats.tot += rd32(E1000_TOTH);
5300 adapter->stats.tpr += rd32(E1000_TPR);
5301
5302 adapter->stats.ptc64 += rd32(E1000_PTC64);
5303 adapter->stats.ptc127 += rd32(E1000_PTC127);
5304 adapter->stats.ptc255 += rd32(E1000_PTC255);
5305 adapter->stats.ptc511 += rd32(E1000_PTC511);
5306 adapter->stats.ptc1023 += rd32(E1000_PTC1023);
5307 adapter->stats.ptc1522 += rd32(E1000_PTC1522);
5308
5309 adapter->stats.mptc += rd32(E1000_MPTC);
5310 adapter->stats.bptc += rd32(E1000_BPTC);
5311
Nick Nunley2d0b0f62010-02-17 01:02:59 +00005312 adapter->stats.tpt += rd32(E1000_TPT);
5313 adapter->stats.colc += rd32(E1000_COLC);
Auke Kok9d5c8242008-01-24 02:22:38 -08005314
5315 adapter->stats.algnerrc += rd32(E1000_ALGNERRC);
Nick Nunley43915c7c2010-02-17 01:03:58 +00005316 /* read internal phy specific stats */
5317 reg = rd32(E1000_CTRL_EXT);
5318 if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) {
5319 adapter->stats.rxerrc += rd32(E1000_RXERRC);
Carolyn Wyborny3dbdf962012-09-12 04:36:24 +00005320
5321 /* this stat has invalid values on i210/i211 */
5322 if ((hw->mac.type != e1000_i210) &&
5323 (hw->mac.type != e1000_i211))
5324 adapter->stats.tncrs += rd32(E1000_TNCRS);
Nick Nunley43915c7c2010-02-17 01:03:58 +00005325 }
5326
Auke Kok9d5c8242008-01-24 02:22:38 -08005327 adapter->stats.tsctc += rd32(E1000_TSCTC);
5328 adapter->stats.tsctfc += rd32(E1000_TSCTFC);
5329
5330 adapter->stats.iac += rd32(E1000_IAC);
5331 adapter->stats.icrxoc += rd32(E1000_ICRXOC);
5332 adapter->stats.icrxptc += rd32(E1000_ICRXPTC);
5333 adapter->stats.icrxatc += rd32(E1000_ICRXATC);
5334 adapter->stats.ictxptc += rd32(E1000_ICTXPTC);
5335 adapter->stats.ictxatc += rd32(E1000_ICTXATC);
5336 adapter->stats.ictxqec += rd32(E1000_ICTXQEC);
5337 adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC);
5338 adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC);
5339
5340 /* Fill out the OS statistics structure */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005341 net_stats->multicast = adapter->stats.mprc;
5342 net_stats->collisions = adapter->stats.colc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005343
5344 /* Rx Errors */
5345
5346 /* RLEC on some newer hardware can be incorrect so build
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005347 * our own version based on RUC and ROC
5348 */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005349 net_stats->rx_errors = adapter->stats.rxerrc +
Auke Kok9d5c8242008-01-24 02:22:38 -08005350 adapter->stats.crcerrs + adapter->stats.algnerrc +
5351 adapter->stats.ruc + adapter->stats.roc +
5352 adapter->stats.cexterr;
Alexander Duyck128e45e2009-11-12 18:37:38 +00005353 net_stats->rx_length_errors = adapter->stats.ruc +
5354 adapter->stats.roc;
5355 net_stats->rx_crc_errors = adapter->stats.crcerrs;
5356 net_stats->rx_frame_errors = adapter->stats.algnerrc;
5357 net_stats->rx_missed_errors = adapter->stats.mpc;
Auke Kok9d5c8242008-01-24 02:22:38 -08005358
5359 /* Tx Errors */
Alexander Duyck128e45e2009-11-12 18:37:38 +00005360 net_stats->tx_errors = adapter->stats.ecol +
5361 adapter->stats.latecol;
5362 net_stats->tx_aborted_errors = adapter->stats.ecol;
5363 net_stats->tx_window_errors = adapter->stats.latecol;
5364 net_stats->tx_carrier_errors = adapter->stats.tncrs;
Auke Kok9d5c8242008-01-24 02:22:38 -08005365
5366 /* Tx Dropped needs to be maintained elsewhere */
5367
Auke Kok9d5c8242008-01-24 02:22:38 -08005368 /* Management Stats */
5369 adapter->stats.mgptc += rd32(E1000_MGTPTC);
5370 adapter->stats.mgprc += rd32(E1000_MGTPRC);
5371 adapter->stats.mgpdc += rd32(E1000_MGTPDC);
Carolyn Wyborny0a915b92011-02-26 07:42:37 +00005372
5373 /* OS2BMC Stats */
5374 reg = rd32(E1000_MANC);
5375 if (reg & E1000_MANC_EN_BMC2OS) {
5376 adapter->stats.o2bgptc += rd32(E1000_O2BGPTC);
5377 adapter->stats.o2bspc += rd32(E1000_O2BSPC);
5378 adapter->stats.b2ospc += rd32(E1000_B2OSPC);
5379 adapter->stats.b2ogprc += rd32(E1000_B2OGPRC);
5380 }
Auke Kok9d5c8242008-01-24 02:22:38 -08005381}
5382
Richard Cochran61d7f752014-11-21 20:51:10 +00005383static void igb_tsync_interrupt(struct igb_adapter *adapter)
5384{
5385 struct e1000_hw *hw = &adapter->hw;
Richard Cochran00c65572014-11-21 20:51:20 +00005386 struct ptp_clock_event event;
Richard Cochran720db4f2014-11-21 20:51:26 +00005387 struct timespec ts;
5388 u32 ack = 0, tsauxc, sec, nsec, tsicr = rd32(E1000_TSICR);
Richard Cochran00c65572014-11-21 20:51:20 +00005389
5390 if (tsicr & TSINTR_SYS_WRAP) {
5391 event.type = PTP_CLOCK_PPS;
5392 if (adapter->ptp_caps.pps)
5393 ptp_clock_event(adapter->ptp_clock, &event);
5394 else
5395 dev_err(&adapter->pdev->dev, "unexpected SYS WRAP");
5396 ack |= TSINTR_SYS_WRAP;
5397 }
Richard Cochran61d7f752014-11-21 20:51:10 +00005398
5399 if (tsicr & E1000_TSICR_TXTS) {
Richard Cochran61d7f752014-11-21 20:51:10 +00005400 /* retrieve hardware timestamp */
5401 schedule_work(&adapter->ptp_tx_work);
Richard Cochran00c65572014-11-21 20:51:20 +00005402 ack |= E1000_TSICR_TXTS;
Richard Cochran61d7f752014-11-21 20:51:10 +00005403 }
Richard Cochran00c65572014-11-21 20:51:20 +00005404
Richard Cochran720db4f2014-11-21 20:51:26 +00005405 if (tsicr & TSINTR_TT0) {
5406 spin_lock(&adapter->tmreg_lock);
5407 ts = timespec_add(adapter->perout[0].start,
5408 adapter->perout[0].period);
5409 wr32(E1000_TRGTTIML0, ts.tv_nsec);
5410 wr32(E1000_TRGTTIMH0, ts.tv_sec);
5411 tsauxc = rd32(E1000_TSAUXC);
5412 tsauxc |= TSAUXC_EN_TT0;
5413 wr32(E1000_TSAUXC, tsauxc);
5414 adapter->perout[0].start = ts;
5415 spin_unlock(&adapter->tmreg_lock);
5416 ack |= TSINTR_TT0;
5417 }
5418
5419 if (tsicr & TSINTR_TT1) {
5420 spin_lock(&adapter->tmreg_lock);
5421 ts = timespec_add(adapter->perout[1].start,
5422 adapter->perout[1].period);
5423 wr32(E1000_TRGTTIML1, ts.tv_nsec);
5424 wr32(E1000_TRGTTIMH1, ts.tv_sec);
5425 tsauxc = rd32(E1000_TSAUXC);
5426 tsauxc |= TSAUXC_EN_TT1;
5427 wr32(E1000_TSAUXC, tsauxc);
5428 adapter->perout[1].start = ts;
5429 spin_unlock(&adapter->tmreg_lock);
5430 ack |= TSINTR_TT1;
5431 }
5432
5433 if (tsicr & TSINTR_AUTT0) {
5434 nsec = rd32(E1000_AUXSTMPL0);
5435 sec = rd32(E1000_AUXSTMPH0);
5436 event.type = PTP_CLOCK_EXTTS;
5437 event.index = 0;
5438 event.timestamp = sec * 1000000000ULL + nsec;
5439 ptp_clock_event(adapter->ptp_clock, &event);
5440 ack |= TSINTR_AUTT0;
5441 }
5442
5443 if (tsicr & TSINTR_AUTT1) {
5444 nsec = rd32(E1000_AUXSTMPL1);
5445 sec = rd32(E1000_AUXSTMPH1);
5446 event.type = PTP_CLOCK_EXTTS;
5447 event.index = 1;
5448 event.timestamp = sec * 1000000000ULL + nsec;
5449 ptp_clock_event(adapter->ptp_clock, &event);
5450 ack |= TSINTR_AUTT1;
5451 }
5452
Richard Cochran00c65572014-11-21 20:51:20 +00005453 /* acknowledge the interrupts */
5454 wr32(E1000_TSICR, ack);
Richard Cochran61d7f752014-11-21 20:51:10 +00005455}
5456
Auke Kok9d5c8242008-01-24 02:22:38 -08005457static irqreturn_t igb_msix_other(int irq, void *data)
5458{
Alexander Duyck047e0032009-10-27 15:49:27 +00005459 struct igb_adapter *adapter = data;
Auke Kok9d5c8242008-01-24 02:22:38 -08005460 struct e1000_hw *hw = &adapter->hw;
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005461 u32 icr = rd32(E1000_ICR);
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005462 /* reading ICR causes bit 31 of EICR to be cleared */
Alexander Duyckdda0e082009-02-06 23:19:08 +00005463
Alexander Duyck7f081d42010-01-07 17:41:00 +00005464 if (icr & E1000_ICR_DRSTA)
5465 schedule_work(&adapter->reset_task);
5466
Alexander Duyck047e0032009-10-27 15:49:27 +00005467 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00005468 /* HW is reporting DMA is out of sync */
5469 adapter->stats.doosync++;
Greg Rose13800462010-11-06 02:08:26 +00005470 /* The DMA Out of Sync is also indication of a spoof event
5471 * in IOV mode. Check the Wrong VM Behavior register to
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005472 * see if it is really a spoof event.
5473 */
Greg Rose13800462010-11-06 02:08:26 +00005474 igb_check_wvbr(adapter);
Alexander Duyckdda0e082009-02-06 23:19:08 +00005475 }
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00005476
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005477 /* Check for a mailbox event */
5478 if (icr & E1000_ICR_VMMB)
5479 igb_msg_task(adapter);
5480
5481 if (icr & E1000_ICR_LSC) {
5482 hw->mac.get_link_status = 1;
5483 /* guard against interrupt when we're going down */
5484 if (!test_bit(__IGB_DOWN, &adapter->state))
5485 mod_timer(&adapter->watchdog_timer, jiffies + 1);
5486 }
5487
Richard Cochran61d7f752014-11-21 20:51:10 +00005488 if (icr & E1000_ICR_TS)
5489 igb_tsync_interrupt(adapter);
Matthew Vick1f6e8172012-08-18 07:26:33 +00005490
PJ Waskiewicz844290e2008-06-27 11:00:39 -07005491 wr32(E1000_EIMS, adapter->eims_other);
Auke Kok9d5c8242008-01-24 02:22:38 -08005492
5493 return IRQ_HANDLED;
5494}
5495
Alexander Duyck047e0032009-10-27 15:49:27 +00005496static void igb_write_itr(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08005497{
Alexander Duyck26b39272010-02-17 01:00:41 +00005498 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck047e0032009-10-27 15:49:27 +00005499 u32 itr_val = q_vector->itr_val & 0x7FFC;
Auke Kok9d5c8242008-01-24 02:22:38 -08005500
Alexander Duyck047e0032009-10-27 15:49:27 +00005501 if (!q_vector->set_itr)
5502 return;
Alexander Duyck73cd78f2009-02-12 18:16:59 +00005503
Alexander Duyck047e0032009-10-27 15:49:27 +00005504 if (!itr_val)
5505 itr_val = 0x4;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005506
Alexander Duyck26b39272010-02-17 01:00:41 +00005507 if (adapter->hw.mac.type == e1000_82575)
5508 itr_val |= itr_val << 16;
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005509 else
Alexander Duyck0ba82992011-08-26 07:45:47 +00005510 itr_val |= E1000_EITR_CNT_IGNR;
Alexander Duyck047e0032009-10-27 15:49:27 +00005511
5512 writel(itr_val, q_vector->itr_register);
5513 q_vector->set_itr = 0;
5514}
5515
5516static irqreturn_t igb_msix_ring(int irq, void *data)
5517{
5518 struct igb_q_vector *q_vector = data;
5519
5520 /* Write the ITR value calculated from the previous interrupt. */
5521 igb_write_itr(q_vector);
5522
5523 napi_schedule(&q_vector->napi);
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07005524
Auke Kok9d5c8242008-01-24 02:22:38 -08005525 return IRQ_HANDLED;
5526}
5527
Jeff Kirsher421e02f2008-10-17 11:08:31 -07005528#ifdef CONFIG_IGB_DCA
Alexander Duyck6a050042012-09-25 00:31:27 +00005529static void igb_update_tx_dca(struct igb_adapter *adapter,
5530 struct igb_ring *tx_ring,
5531 int cpu)
5532{
5533 struct e1000_hw *hw = &adapter->hw;
5534 u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
5535
5536 if (hw->mac.type != e1000_82575)
5537 txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT;
5538
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005539 /* We can enable relaxed ordering for reads, but not writes when
Alexander Duyck6a050042012-09-25 00:31:27 +00005540 * DCA is enabled. This is due to a known issue in some chipsets
5541 * which will cause the DCA tag to be cleared.
5542 */
5543 txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN |
5544 E1000_DCA_TXCTRL_DATA_RRO_EN |
5545 E1000_DCA_TXCTRL_DESC_DCA_EN;
5546
5547 wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl);
5548}
5549
5550static void igb_update_rx_dca(struct igb_adapter *adapter,
5551 struct igb_ring *rx_ring,
5552 int cpu)
5553{
5554 struct e1000_hw *hw = &adapter->hw;
5555 u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu);
5556
5557 if (hw->mac.type != e1000_82575)
5558 rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT;
5559
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005560 /* We can enable relaxed ordering for reads, but not writes when
Alexander Duyck6a050042012-09-25 00:31:27 +00005561 * DCA is enabled. This is due to a known issue in some chipsets
5562 * which will cause the DCA tag to be cleared.
5563 */
5564 rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN |
5565 E1000_DCA_RXCTRL_DESC_DCA_EN;
5566
5567 wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl);
5568}
5569
Alexander Duyck047e0032009-10-27 15:49:27 +00005570static void igb_update_dca(struct igb_q_vector *q_vector)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005571{
Alexander Duyck047e0032009-10-27 15:49:27 +00005572 struct igb_adapter *adapter = q_vector->adapter;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005573 int cpu = get_cpu();
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005574
Alexander Duyck047e0032009-10-27 15:49:27 +00005575 if (q_vector->cpu == cpu)
5576 goto out_no_update;
5577
Alexander Duyck6a050042012-09-25 00:31:27 +00005578 if (q_vector->tx.ring)
5579 igb_update_tx_dca(adapter, q_vector->tx.ring, cpu);
5580
5581 if (q_vector->rx.ring)
5582 igb_update_rx_dca(adapter, q_vector->rx.ring, cpu);
5583
Alexander Duyck047e0032009-10-27 15:49:27 +00005584 q_vector->cpu = cpu;
5585out_no_update:
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005586 put_cpu();
5587}
5588
5589static void igb_setup_dca(struct igb_adapter *adapter)
5590{
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00005591 struct e1000_hw *hw = &adapter->hw;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005592 int i;
5593
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005594 if (!(adapter->flags & IGB_FLAG_DCA_ENABLED))
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005595 return;
5596
Alexander Duyck7e0e99e2009-05-21 13:06:56 +00005597 /* Always use CB2 mode, difference is masked in the CB driver. */
5598 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2);
5599
Alexander Duyck047e0032009-10-27 15:49:27 +00005600 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck26b39272010-02-17 01:00:41 +00005601 adapter->q_vector[i]->cpu = -1;
5602 igb_update_dca(adapter->q_vector[i]);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005603 }
5604}
5605
5606static int __igb_notify_dca(struct device *dev, void *data)
5607{
5608 struct net_device *netdev = dev_get_drvdata(dev);
5609 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005610 struct pci_dev *pdev = adapter->pdev;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005611 struct e1000_hw *hw = &adapter->hw;
5612 unsigned long event = *(unsigned long *)data;
5613
5614 switch (event) {
5615 case DCA_PROVIDER_ADD:
5616 /* if already enabled, don't do it again */
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005617 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005618 break;
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005619 if (dca_add_requester(dev) == 0) {
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08005620 adapter->flags |= IGB_FLAG_DCA_ENABLED;
Alexander Duyck090b1792009-10-27 23:51:55 +00005621 dev_info(&pdev->dev, "DCA enabled\n");
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005622 igb_setup_dca(adapter);
5623 break;
5624 }
5625 /* Fall Through since DCA is disabled. */
5626 case DCA_PROVIDER_REMOVE:
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005627 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005628 /* without this a class_device is left
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005629 * hanging around in the sysfs model
5630 */
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005631 dca_remove_requester(dev);
Alexander Duyck090b1792009-10-27 23:51:55 +00005632 dev_info(&pdev->dev, "DCA disabled\n");
Alexander Duyck7dfc16f2008-07-08 15:10:46 -07005633 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
Alexander Duyckcbd347a2009-02-15 23:59:44 -08005634 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005635 }
5636 break;
5637 }
Alexander Duyckbbd98fe2009-01-31 00:52:30 -08005638
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005639 return 0;
5640}
5641
5642static int igb_notify_dca(struct notifier_block *nb, unsigned long event,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005643 void *p)
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005644{
5645 int ret_val;
5646
5647 ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005648 __igb_notify_dca);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07005649
5650 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
5651}
Jeff Kirsher421e02f2008-10-17 11:08:31 -07005652#endif /* CONFIG_IGB_DCA */
Auke Kok9d5c8242008-01-24 02:22:38 -08005653
Greg Rose0224d662011-10-14 02:57:14 +00005654#ifdef CONFIG_PCI_IOV
5655static int igb_vf_configure(struct igb_adapter *adapter, int vf)
5656{
5657 unsigned char mac_addr[ETH_ALEN];
Greg Rose0224d662011-10-14 02:57:14 +00005658
Mitch A Williams5ac6f912013-01-18 08:57:20 +00005659 eth_zero_addr(mac_addr);
Greg Rose0224d662011-10-14 02:57:14 +00005660 igb_set_vf_mac(adapter, vf, mac_addr);
5661
Lior Levy70ea4782013-03-03 20:27:48 +00005662 /* By default spoof check is enabled for all VFs */
5663 adapter->vf_data[vf].spoofchk_enabled = true;
5664
Stefan Assmannf5571472012-08-18 04:06:11 +00005665 return 0;
Greg Rose0224d662011-10-14 02:57:14 +00005666}
5667
Greg Rose0224d662011-10-14 02:57:14 +00005668#endif
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005669static void igb_ping_all_vfs(struct igb_adapter *adapter)
5670{
5671 struct e1000_hw *hw = &adapter->hw;
5672 u32 ping;
5673 int i;
5674
5675 for (i = 0 ; i < adapter->vfs_allocated_count; i++) {
5676 ping = E1000_PF_CONTROL_MSG;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00005677 if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005678 ping |= E1000_VT_MSGTYPE_CTS;
5679 igb_write_mbx(hw, &ping, 1, i);
5680 }
5681}
5682
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005683static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
5684{
5685 struct e1000_hw *hw = &adapter->hw;
5686 u32 vmolr = rd32(E1000_VMOLR(vf));
5687 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
5688
Alexander Duyckd85b90042010-09-22 17:56:20 +00005689 vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC |
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005690 IGB_VF_FLAG_MULTI_PROMISC);
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005691 vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
5692
5693 if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) {
5694 vmolr |= E1000_VMOLR_MPME;
Alexander Duyckd85b90042010-09-22 17:56:20 +00005695 vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005696 *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST;
5697 } else {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005698 /* if we have hashes and we are clearing a multicast promisc
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005699 * flag we need to write the hashes to the MTA as this step
5700 * was previously skipped
5701 */
5702 if (vf_data->num_vf_mc_hashes > 30) {
5703 vmolr |= E1000_VMOLR_MPME;
5704 } else if (vf_data->num_vf_mc_hashes) {
5705 int j;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005706
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005707 vmolr |= E1000_VMOLR_ROMPE;
5708 for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
5709 igb_mta_set(hw, vf_data->vf_mc_hashes[j]);
5710 }
5711 }
5712
5713 wr32(E1000_VMOLR(vf), vmolr);
5714
5715 /* there are flags left unprocessed, likely not supported */
5716 if (*msgbuf & E1000_VT_MSGINFO_MASK)
5717 return -EINVAL;
5718
5719 return 0;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005720}
5721
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005722static int igb_set_vf_multicasts(struct igb_adapter *adapter,
5723 u32 *msgbuf, u32 vf)
5724{
5725 int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
5726 u16 *hash_list = (u16 *)&msgbuf[1];
5727 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
5728 int i;
5729
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005730 /* salt away the number of multicast addresses assigned
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005731 * to this VF for later use to restore when the PF multi cast
5732 * list changes
5733 */
5734 vf_data->num_vf_mc_hashes = n;
5735
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005736 /* only up to 30 hash values supported */
5737 if (n > 30)
5738 n = 30;
5739
5740 /* store the hashes for later use */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005741 for (i = 0; i < n; i++)
Joe Perchesa419aef2009-08-18 11:18:35 -07005742 vf_data->vf_mc_hashes[i] = hash_list[i];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005743
5744 /* Flush and reset the mta with the new values */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00005745 igb_set_rx_mode(adapter->netdev);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005746
5747 return 0;
5748}
5749
5750static void igb_restore_vf_multicasts(struct igb_adapter *adapter)
5751{
5752 struct e1000_hw *hw = &adapter->hw;
5753 struct vf_data_storage *vf_data;
5754 int i, j;
5755
5756 for (i = 0; i < adapter->vfs_allocated_count; i++) {
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005757 u32 vmolr = rd32(E1000_VMOLR(i));
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005758
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005759 vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
5760
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005761 vf_data = &adapter->vf_data[i];
Alexander Duyck7d5753f2009-10-27 23:47:16 +00005762
5763 if ((vf_data->num_vf_mc_hashes > 30) ||
5764 (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) {
5765 vmolr |= E1000_VMOLR_MPME;
5766 } else if (vf_data->num_vf_mc_hashes) {
5767 vmolr |= E1000_VMOLR_ROMPE;
5768 for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
5769 igb_mta_set(hw, vf_data->vf_mc_hashes[j]);
5770 }
5771 wr32(E1000_VMOLR(i), vmolr);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005772 }
5773}
5774
5775static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf)
5776{
5777 struct e1000_hw *hw = &adapter->hw;
5778 u32 pool_mask, reg, vid;
5779 int i;
5780
5781 pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
5782
5783 /* Find the vlan filter for this id */
5784 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5785 reg = rd32(E1000_VLVF(i));
5786
5787 /* remove the vf from the pool */
5788 reg &= ~pool_mask;
5789
5790 /* if pool is empty then remove entry from vfta */
5791 if (!(reg & E1000_VLVF_POOLSEL_MASK) &&
5792 (reg & E1000_VLVF_VLANID_ENABLE)) {
5793 reg = 0;
5794 vid = reg & E1000_VLVF_VLANID_MASK;
5795 igb_vfta_set(hw, vid, false);
5796 }
5797
5798 wr32(E1000_VLVF(i), reg);
5799 }
Alexander Duyckae641bd2009-09-03 14:49:33 +00005800
5801 adapter->vf_data[vf].vlans_enabled = 0;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005802}
5803
5804static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf)
5805{
5806 struct e1000_hw *hw = &adapter->hw;
5807 u32 reg, i;
5808
Alexander Duyck51466232009-10-27 23:47:35 +00005809 /* The vlvf table only exists on 82576 hardware and newer */
5810 if (hw->mac.type < e1000_82576)
5811 return -1;
5812
5813 /* we only need to do this if VMDq is enabled */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005814 if (!adapter->vfs_allocated_count)
5815 return -1;
5816
5817 /* Find the vlan filter for this id */
5818 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5819 reg = rd32(E1000_VLVF(i));
5820 if ((reg & E1000_VLVF_VLANID_ENABLE) &&
5821 vid == (reg & E1000_VLVF_VLANID_MASK))
5822 break;
5823 }
5824
5825 if (add) {
5826 if (i == E1000_VLVF_ARRAY_SIZE) {
5827 /* Did not find a matching VLAN ID entry that was
5828 * enabled. Search for a free filter entry, i.e.
5829 * one without the enable bit set
5830 */
5831 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5832 reg = rd32(E1000_VLVF(i));
5833 if (!(reg & E1000_VLVF_VLANID_ENABLE))
5834 break;
5835 }
5836 }
5837 if (i < E1000_VLVF_ARRAY_SIZE) {
5838 /* Found an enabled/available entry */
5839 reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
5840
5841 /* if !enabled we need to set this up in vfta */
5842 if (!(reg & E1000_VLVF_VLANID_ENABLE)) {
Alexander Duyck51466232009-10-27 23:47:35 +00005843 /* add VID to filter table */
5844 igb_vfta_set(hw, vid, true);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005845 reg |= E1000_VLVF_VLANID_ENABLE;
5846 }
Alexander Duyckcad6d052009-03-13 20:41:37 +00005847 reg &= ~E1000_VLVF_VLANID_MASK;
5848 reg |= vid;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005849 wr32(E1000_VLVF(i), reg);
Alexander Duyckae641bd2009-09-03 14:49:33 +00005850
5851 /* do not modify RLPML for PF devices */
5852 if (vf >= adapter->vfs_allocated_count)
5853 return 0;
5854
5855 if (!adapter->vf_data[vf].vlans_enabled) {
5856 u32 size;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005857
Alexander Duyckae641bd2009-09-03 14:49:33 +00005858 reg = rd32(E1000_VMOLR(vf));
5859 size = reg & E1000_VMOLR_RLPML_MASK;
5860 size += 4;
5861 reg &= ~E1000_VMOLR_RLPML_MASK;
5862 reg |= size;
5863 wr32(E1000_VMOLR(vf), reg);
5864 }
Alexander Duyckae641bd2009-09-03 14:49:33 +00005865
Alexander Duyck51466232009-10-27 23:47:35 +00005866 adapter->vf_data[vf].vlans_enabled++;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005867 }
5868 } else {
5869 if (i < E1000_VLVF_ARRAY_SIZE) {
5870 /* remove vf from the pool */
5871 reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf));
5872 /* if pool is empty then remove entry from vfta */
5873 if (!(reg & E1000_VLVF_POOLSEL_MASK)) {
5874 reg = 0;
5875 igb_vfta_set(hw, vid, false);
5876 }
5877 wr32(E1000_VLVF(i), reg);
Alexander Duyckae641bd2009-09-03 14:49:33 +00005878
5879 /* do not modify RLPML for PF devices */
5880 if (vf >= adapter->vfs_allocated_count)
5881 return 0;
5882
5883 adapter->vf_data[vf].vlans_enabled--;
5884 if (!adapter->vf_data[vf].vlans_enabled) {
5885 u32 size;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005886
Alexander Duyckae641bd2009-09-03 14:49:33 +00005887 reg = rd32(E1000_VMOLR(vf));
5888 size = reg & E1000_VMOLR_RLPML_MASK;
5889 size -= 4;
5890 reg &= ~E1000_VMOLR_RLPML_MASK;
5891 reg |= size;
5892 wr32(E1000_VMOLR(vf), reg);
5893 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005894 }
5895 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00005896 return 0;
5897}
5898
5899static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf)
5900{
5901 struct e1000_hw *hw = &adapter->hw;
5902
5903 if (vid)
5904 wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT));
5905 else
5906 wr32(E1000_VMVIR(vf), 0);
5907}
5908
5909static int igb_ndo_set_vf_vlan(struct net_device *netdev,
5910 int vf, u16 vlan, u8 qos)
5911{
5912 int err = 0;
5913 struct igb_adapter *adapter = netdev_priv(netdev);
5914
5915 if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7))
5916 return -EINVAL;
5917 if (vlan || qos) {
5918 err = igb_vlvf_set(adapter, vlan, !!vlan, vf);
5919 if (err)
5920 goto out;
5921 igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
5922 igb_set_vmolr(adapter, vf, !vlan);
5923 adapter->vf_data[vf].pf_vlan = vlan;
5924 adapter->vf_data[vf].pf_qos = qos;
5925 dev_info(&adapter->pdev->dev,
5926 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
5927 if (test_bit(__IGB_DOWN, &adapter->state)) {
5928 dev_warn(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005929 "The VF VLAN has been set, but the PF device is not up.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00005930 dev_warn(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005931 "Bring the PF device up before attempting to use the VF device.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00005932 }
5933 } else {
5934 igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005935 false, vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00005936 igb_set_vmvir(adapter, vlan, vf);
5937 igb_set_vmolr(adapter, vf, true);
5938 adapter->vf_data[vf].pf_vlan = 0;
5939 adapter->vf_data[vf].pf_qos = 0;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005940 }
Williams, Mitch A8151d292010-02-10 01:44:24 +00005941out:
Jeff Kirsherb980ac12013-02-23 07:29:56 +00005942 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005943}
5944
Greg Rose6f3dc3192013-03-26 06:19:41 +00005945static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid)
5946{
5947 struct e1000_hw *hw = &adapter->hw;
5948 int i;
5949 u32 reg;
5950
5951 /* Find the vlan filter for this id */
5952 for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
5953 reg = rd32(E1000_VLVF(i));
5954 if ((reg & E1000_VLVF_VLANID_ENABLE) &&
5955 vid == (reg & E1000_VLVF_VLANID_MASK))
5956 break;
5957 }
5958
5959 if (i >= E1000_VLVF_ARRAY_SIZE)
5960 i = -1;
5961
5962 return i;
5963}
5964
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005965static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
5966{
Greg Rose6f3dc3192013-03-26 06:19:41 +00005967 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005968 int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
5969 int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK);
Greg Rose6f3dc3192013-03-26 06:19:41 +00005970 int err = 0;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08005971
Greg Rose6f3dc3192013-03-26 06:19:41 +00005972 /* If in promiscuous mode we need to make sure the PF also has
5973 * the VLAN filter set.
5974 */
5975 if (add && (adapter->netdev->flags & IFF_PROMISC))
5976 err = igb_vlvf_set(adapter, vid, add,
5977 adapter->vfs_allocated_count);
5978 if (err)
5979 goto out;
5980
5981 err = igb_vlvf_set(adapter, vid, add, vf);
5982
5983 if (err)
5984 goto out;
5985
5986 /* Go through all the checks to see if the VLAN filter should
5987 * be wiped completely.
5988 */
5989 if (!add && (adapter->netdev->flags & IFF_PROMISC)) {
5990 u32 vlvf, bits;
Greg Rose6f3dc3192013-03-26 06:19:41 +00005991 int regndx = igb_find_vlvf_entry(adapter, vid);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00005992
Greg Rose6f3dc3192013-03-26 06:19:41 +00005993 if (regndx < 0)
5994 goto out;
5995 /* See if any other pools are set for this VLAN filter
5996 * entry other than the PF.
5997 */
5998 vlvf = bits = rd32(E1000_VLVF(regndx));
5999 bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT +
6000 adapter->vfs_allocated_count);
6001 /* If the filter was removed then ensure PF pool bit
6002 * is cleared if the PF only added itself to the pool
6003 * because the PF is in promiscuous mode.
6004 */
6005 if ((vlvf & VLAN_VID_MASK) == vid &&
6006 !test_bit(vid, adapter->active_vlans) &&
6007 !bits)
6008 igb_vlvf_set(adapter, vid, add,
6009 adapter->vfs_allocated_count);
6010 }
6011
6012out:
6013 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006014}
6015
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006016static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006017{
Greg Rose8fa7e0f2010-11-06 05:43:21 +00006018 /* clear flags - except flag that indicates PF has set the MAC */
6019 adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006020 adapter->vf_data[vf].last_nack = jiffies;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006021
6022 /* reset offloads to defaults */
Williams, Mitch A8151d292010-02-10 01:44:24 +00006023 igb_set_vmolr(adapter, vf, true);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006024
6025 /* reset vlans for device */
6026 igb_clear_vf_vfta(adapter, vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00006027 if (adapter->vf_data[vf].pf_vlan)
6028 igb_ndo_set_vf_vlan(adapter->netdev, vf,
6029 adapter->vf_data[vf].pf_vlan,
6030 adapter->vf_data[vf].pf_qos);
6031 else
6032 igb_clear_vf_vfta(adapter, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006033
6034 /* reset multicast table array for vf */
6035 adapter->vf_data[vf].num_vf_mc_hashes = 0;
6036
6037 /* Flush and reset the mta with the new values */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00006038 igb_set_rx_mode(adapter->netdev);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006039}
6040
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006041static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
6042{
6043 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
6044
Mitch A Williams5ac6f912013-01-18 08:57:20 +00006045 /* clear mac address as we were hotplug removed/added */
Williams, Mitch A8151d292010-02-10 01:44:24 +00006046 if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC))
Mitch A Williams5ac6f912013-01-18 08:57:20 +00006047 eth_zero_addr(vf_mac);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006048
6049 /* process remaining reset events */
6050 igb_vf_reset(adapter, vf);
6051}
6052
6053static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006054{
6055 struct e1000_hw *hw = &adapter->hw;
6056 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
Alexander Duyckff41f8d2009-09-03 14:48:56 +00006057 int rar_entry = hw->mac.rar_entry_count - (vf + 1);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006058 u32 reg, msgbuf[3];
6059 u8 *addr = (u8 *)(&msgbuf[1]);
6060
6061 /* process all the same items cleared in a function level reset */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006062 igb_vf_reset(adapter, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006063
6064 /* set vf mac address */
Alexander Duyck26ad9172009-10-05 06:32:49 +00006065 igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006066
6067 /* enable transmit and receive for vf */
6068 reg = rd32(E1000_VFTE);
6069 wr32(E1000_VFTE, reg | (1 << vf));
6070 reg = rd32(E1000_VFRE);
6071 wr32(E1000_VFRE, reg | (1 << vf));
6072
Greg Rose8fa7e0f2010-11-06 05:43:21 +00006073 adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006074
6075 /* reply to reset with ack and vf mac address */
Alexander Graf6ddbc4c2014-10-09 05:33:55 +00006076 if (!is_zero_ether_addr(vf_mac)) {
6077 msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK;
6078 memcpy(addr, vf_mac, ETH_ALEN);
6079 } else {
6080 msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_NACK;
6081 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006082 igb_write_mbx(hw, msgbuf, 3, vf);
6083}
6084
6085static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
6086{
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006087 /* The VF MAC Address is stored in a packed array of bytes
Greg Rosede42edd2010-07-01 13:39:23 +00006088 * starting at the second 32 bit word of the msg array
6089 */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006090 unsigned char *addr = (char *)&msg[1];
6091 int err = -1;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006092
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006093 if (is_valid_ether_addr(addr))
6094 err = igb_set_vf_mac(adapter, vf, addr);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006095
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006096 return err;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006097}
6098
6099static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf)
6100{
6101 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006102 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006103 u32 msg = E1000_VT_MSGTYPE_NACK;
6104
6105 /* if device isn't clear to send it shouldn't be reading either */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006106 if (!(vf_data->flags & IGB_VF_FLAG_CTS) &&
6107 time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006108 igb_write_mbx(hw, &msg, 1, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006109 vf_data->last_nack = jiffies;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006110 }
6111}
6112
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006113static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006114{
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006115 struct pci_dev *pdev = adapter->pdev;
6116 u32 msgbuf[E1000_VFMAILBOX_SIZE];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006117 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006118 struct vf_data_storage *vf_data = &adapter->vf_data[vf];
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006119 s32 retval;
6120
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006121 retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006122
Alexander Duyckfef45f42009-12-11 22:57:34 -08006123 if (retval) {
6124 /* if receive failed revoke VF CTS stats and restart init */
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006125 dev_err(&pdev->dev, "Error receiving message from VF\n");
Alexander Duyckfef45f42009-12-11 22:57:34 -08006126 vf_data->flags &= ~IGB_VF_FLAG_CTS;
6127 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ)))
6128 return;
6129 goto out;
6130 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006131
6132 /* this is a message we already processed, do nothing */
6133 if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK))
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006134 return;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006135
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006136 /* until the vf completes a reset it should not be
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006137 * allowed to start any configuration.
6138 */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006139 if (msgbuf[0] == E1000_VF_RESET) {
6140 igb_vf_reset_msg(adapter, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006141 return;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006142 }
6143
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006144 if (!(vf_data->flags & IGB_VF_FLAG_CTS)) {
Alexander Duyckfef45f42009-12-11 22:57:34 -08006145 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ)))
6146 return;
6147 retval = -1;
6148 goto out;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006149 }
6150
6151 switch ((msgbuf[0] & 0xFFFF)) {
6152 case E1000_VF_SET_MAC_ADDR:
Greg Rosea6b5ea32010-11-06 05:42:59 +00006153 retval = -EINVAL;
6154 if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC))
6155 retval = igb_set_vf_mac_addr(adapter, msgbuf, vf);
6156 else
6157 dev_warn(&pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006158 "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n",
6159 vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006160 break;
Alexander Duyck7d5753f2009-10-27 23:47:16 +00006161 case E1000_VF_SET_PROMISC:
6162 retval = igb_set_vf_promisc(adapter, msgbuf, vf);
6163 break;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006164 case E1000_VF_SET_MULTICAST:
6165 retval = igb_set_vf_multicasts(adapter, msgbuf, vf);
6166 break;
6167 case E1000_VF_SET_LPE:
6168 retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf);
6169 break;
6170 case E1000_VF_SET_VLAN:
Greg Rosea6b5ea32010-11-06 05:42:59 +00006171 retval = -1;
6172 if (vf_data->pf_vlan)
6173 dev_warn(&pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006174 "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n",
6175 vf);
Williams, Mitch A8151d292010-02-10 01:44:24 +00006176 else
6177 retval = igb_set_vf_vlan(adapter, msgbuf, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006178 break;
6179 default:
Alexander Duyck090b1792009-10-27 23:51:55 +00006180 dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006181 retval = -1;
6182 break;
6183 }
6184
Alexander Duyckfef45f42009-12-11 22:57:34 -08006185 msgbuf[0] |= E1000_VT_MSGTYPE_CTS;
6186out:
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006187 /* notify the VF of the results of what it sent us */
6188 if (retval)
6189 msgbuf[0] |= E1000_VT_MSGTYPE_NACK;
6190 else
6191 msgbuf[0] |= E1000_VT_MSGTYPE_ACK;
6192
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006193 igb_write_mbx(hw, msgbuf, 1, vf);
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006194}
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006195
Alexander Duyckf2ca0db2009-10-27 23:46:57 +00006196static void igb_msg_task(struct igb_adapter *adapter)
6197{
6198 struct e1000_hw *hw = &adapter->hw;
6199 u32 vf;
6200
6201 for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
6202 /* process any reset requests */
6203 if (!igb_check_for_rst(hw, vf))
6204 igb_vf_reset_event(adapter, vf);
6205
6206 /* process any messages pending */
6207 if (!igb_check_for_msg(hw, vf))
6208 igb_rcv_msg_from_vf(adapter, vf);
6209
6210 /* process any acks */
6211 if (!igb_check_for_ack(hw, vf))
6212 igb_rcv_ack_from_vf(adapter, vf);
6213 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08006214}
6215
Auke Kok9d5c8242008-01-24 02:22:38 -08006216/**
Alexander Duyck68d480c2009-10-05 06:33:08 +00006217 * igb_set_uta - Set unicast filter table address
6218 * @adapter: board private structure
6219 *
6220 * The unicast table address is a register array of 32-bit registers.
6221 * The table is meant to be used in a way similar to how the MTA is used
6222 * however due to certain limitations in the hardware it is necessary to
Lucas De Marchi25985ed2011-03-30 22:57:33 -03006223 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
6224 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
Alexander Duyck68d480c2009-10-05 06:33:08 +00006225 **/
6226static void igb_set_uta(struct igb_adapter *adapter)
6227{
6228 struct e1000_hw *hw = &adapter->hw;
6229 int i;
6230
6231 /* The UTA table only exists on 82576 hardware and newer */
6232 if (hw->mac.type < e1000_82576)
6233 return;
6234
6235 /* we only need to do this if VMDq is enabled */
6236 if (!adapter->vfs_allocated_count)
6237 return;
6238
6239 for (i = 0; i < hw->mac.uta_reg_count; i++)
6240 array_wr32(E1000_UTA, i, ~0);
6241}
6242
6243/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006244 * igb_intr_msi - Interrupt Handler
6245 * @irq: interrupt number
6246 * @data: pointer to a network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08006247 **/
6248static irqreturn_t igb_intr_msi(int irq, void *data)
6249{
Alexander Duyck047e0032009-10-27 15:49:27 +00006250 struct igb_adapter *adapter = data;
6251 struct igb_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9d5c8242008-01-24 02:22:38 -08006252 struct e1000_hw *hw = &adapter->hw;
6253 /* read ICR disables interrupts using IAM */
6254 u32 icr = rd32(E1000_ICR);
6255
Alexander Duyck047e0032009-10-27 15:49:27 +00006256 igb_write_itr(q_vector);
Auke Kok9d5c8242008-01-24 02:22:38 -08006257
Alexander Duyck7f081d42010-01-07 17:41:00 +00006258 if (icr & E1000_ICR_DRSTA)
6259 schedule_work(&adapter->reset_task);
6260
Alexander Duyck047e0032009-10-27 15:49:27 +00006261 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00006262 /* HW is reporting DMA is out of sync */
6263 adapter->stats.doosync++;
6264 }
6265
Auke Kok9d5c8242008-01-24 02:22:38 -08006266 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
6267 hw->mac.get_link_status = 1;
6268 if (!test_bit(__IGB_DOWN, &adapter->state))
6269 mod_timer(&adapter->watchdog_timer, jiffies + 1);
6270 }
6271
Richard Cochran61d7f752014-11-21 20:51:10 +00006272 if (icr & E1000_ICR_TS)
6273 igb_tsync_interrupt(adapter);
Matthew Vick1f6e8172012-08-18 07:26:33 +00006274
Alexander Duyck047e0032009-10-27 15:49:27 +00006275 napi_schedule(&q_vector->napi);
Auke Kok9d5c8242008-01-24 02:22:38 -08006276
6277 return IRQ_HANDLED;
6278}
6279
6280/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006281 * igb_intr - Legacy Interrupt Handler
6282 * @irq: interrupt number
6283 * @data: pointer to a network interface device structure
Auke Kok9d5c8242008-01-24 02:22:38 -08006284 **/
6285static irqreturn_t igb_intr(int irq, void *data)
6286{
Alexander Duyck047e0032009-10-27 15:49:27 +00006287 struct igb_adapter *adapter = data;
6288 struct igb_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9d5c8242008-01-24 02:22:38 -08006289 struct e1000_hw *hw = &adapter->hw;
6290 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006291 * need for the IMC write
6292 */
Auke Kok9d5c8242008-01-24 02:22:38 -08006293 u32 icr = rd32(E1000_ICR);
Auke Kok9d5c8242008-01-24 02:22:38 -08006294
6295 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006296 * not set, then the adapter didn't send an interrupt
6297 */
Auke Kok9d5c8242008-01-24 02:22:38 -08006298 if (!(icr & E1000_ICR_INT_ASSERTED))
6299 return IRQ_NONE;
6300
Alexander Duyck0ba82992011-08-26 07:45:47 +00006301 igb_write_itr(q_vector);
6302
Alexander Duyck7f081d42010-01-07 17:41:00 +00006303 if (icr & E1000_ICR_DRSTA)
6304 schedule_work(&adapter->reset_task);
6305
Alexander Duyck047e0032009-10-27 15:49:27 +00006306 if (icr & E1000_ICR_DOUTSYNC) {
Alexander Duyckdda0e082009-02-06 23:19:08 +00006307 /* HW is reporting DMA is out of sync */
6308 adapter->stats.doosync++;
6309 }
6310
Auke Kok9d5c8242008-01-24 02:22:38 -08006311 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
6312 hw->mac.get_link_status = 1;
6313 /* guard against interrupt when we're going down */
6314 if (!test_bit(__IGB_DOWN, &adapter->state))
6315 mod_timer(&adapter->watchdog_timer, jiffies + 1);
6316 }
6317
Richard Cochran61d7f752014-11-21 20:51:10 +00006318 if (icr & E1000_ICR_TS)
6319 igb_tsync_interrupt(adapter);
Matthew Vick1f6e8172012-08-18 07:26:33 +00006320
Alexander Duyck047e0032009-10-27 15:49:27 +00006321 napi_schedule(&q_vector->napi);
Auke Kok9d5c8242008-01-24 02:22:38 -08006322
6323 return IRQ_HANDLED;
6324}
6325
Stephen Hemmingerc50b52a2012-01-18 22:13:26 +00006326static void igb_ring_irq_enable(struct igb_q_vector *q_vector)
Alexander Duyck46544252009-02-19 20:39:04 -08006327{
Alexander Duyck047e0032009-10-27 15:49:27 +00006328 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck46544252009-02-19 20:39:04 -08006329 struct e1000_hw *hw = &adapter->hw;
6330
Alexander Duyck0ba82992011-08-26 07:45:47 +00006331 if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) ||
6332 (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) {
6333 if ((adapter->num_q_vectors == 1) && !adapter->vf_data)
6334 igb_set_itr(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006335 else
Alexander Duyck047e0032009-10-27 15:49:27 +00006336 igb_update_ring_itr(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006337 }
6338
6339 if (!test_bit(__IGB_DOWN, &adapter->state)) {
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00006340 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Alexander Duyck047e0032009-10-27 15:49:27 +00006341 wr32(E1000_EIMS, q_vector->eims_value);
Alexander Duyck46544252009-02-19 20:39:04 -08006342 else
6343 igb_irq_enable(adapter);
6344 }
6345}
6346
Auke Kok9d5c8242008-01-24 02:22:38 -08006347/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006348 * igb_poll - NAPI Rx polling callback
6349 * @napi: napi polling structure
6350 * @budget: count of how many packets we should handle
Auke Kok9d5c8242008-01-24 02:22:38 -08006351 **/
Peter P Waskiewicz Jr661086d2008-07-08 15:06:51 -07006352static int igb_poll(struct napi_struct *napi, int budget)
Auke Kok9d5c8242008-01-24 02:22:38 -08006353{
Alexander Duyck047e0032009-10-27 15:49:27 +00006354 struct igb_q_vector *q_vector = container_of(napi,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006355 struct igb_q_vector,
6356 napi);
Alexander Duyck16eb8812011-08-26 07:43:54 +00006357 bool clean_complete = true;
Auke Kok9d5c8242008-01-24 02:22:38 -08006358
Jeff Kirsher421e02f2008-10-17 11:08:31 -07006359#ifdef CONFIG_IGB_DCA
Alexander Duyck047e0032009-10-27 15:49:27 +00006360 if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED)
6361 igb_update_dca(q_vector);
Jeb Cramerfe4506b2008-07-08 15:07:55 -07006362#endif
Alexander Duyck0ba82992011-08-26 07:45:47 +00006363 if (q_vector->tx.ring)
Alexander Duyck13fde972011-10-05 13:35:24 +00006364 clean_complete = igb_clean_tx_irq(q_vector);
Auke Kok9d5c8242008-01-24 02:22:38 -08006365
Alexander Duyck0ba82992011-08-26 07:45:47 +00006366 if (q_vector->rx.ring)
Alexander Duyckcd392f52011-08-26 07:43:59 +00006367 clean_complete &= igb_clean_rx_irq(q_vector, budget);
Alexander Duyck047e0032009-10-27 15:49:27 +00006368
Alexander Duyck16eb8812011-08-26 07:43:54 +00006369 /* If all work not completed, return budget and keep polling */
6370 if (!clean_complete)
6371 return budget;
Auke Kok9d5c8242008-01-24 02:22:38 -08006372
Alexander Duyck46544252009-02-19 20:39:04 -08006373 /* If not enough Rx work done, exit the polling mode */
Alexander Duyck16eb8812011-08-26 07:43:54 +00006374 napi_complete(napi);
6375 igb_ring_irq_enable(q_vector);
Alexander Duyck46544252009-02-19 20:39:04 -08006376
Alexander Duyck16eb8812011-08-26 07:43:54 +00006377 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08006378}
Al Viro6d8126f2008-03-16 22:23:24 +00006379
Patrick Ohly33af6bc2009-02-12 05:03:43 +00006380/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006381 * igb_clean_tx_irq - Reclaim resources after transmit completes
6382 * @q_vector: pointer to q_vector containing needed info
Ben Hutchings49ce9c22012-07-10 10:56:00 +00006383 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006384 * returns true if ring is completely cleaned
Auke Kok9d5c8242008-01-24 02:22:38 -08006385 **/
Alexander Duyck047e0032009-10-27 15:49:27 +00006386static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
Auke Kok9d5c8242008-01-24 02:22:38 -08006387{
Alexander Duyck047e0032009-10-27 15:49:27 +00006388 struct igb_adapter *adapter = q_vector->adapter;
Alexander Duyck0ba82992011-08-26 07:45:47 +00006389 struct igb_ring *tx_ring = q_vector->tx.ring;
Alexander Duyck06034642011-08-26 07:44:22 +00006390 struct igb_tx_buffer *tx_buffer;
Alexander Duyckf4128782012-09-13 06:28:01 +00006391 union e1000_adv_tx_desc *tx_desc;
Auke Kok9d5c8242008-01-24 02:22:38 -08006392 unsigned int total_bytes = 0, total_packets = 0;
Alexander Duyck0ba82992011-08-26 07:45:47 +00006393 unsigned int budget = q_vector->tx.work_limit;
Alexander Duyck8542db02011-08-26 07:44:43 +00006394 unsigned int i = tx_ring->next_to_clean;
Auke Kok9d5c8242008-01-24 02:22:38 -08006395
Alexander Duyck13fde972011-10-05 13:35:24 +00006396 if (test_bit(__IGB_DOWN, &adapter->state))
6397 return true;
Alexander Duyck0e014cb2008-12-26 01:33:18 -08006398
Alexander Duyck06034642011-08-26 07:44:22 +00006399 tx_buffer = &tx_ring->tx_buffer_info[i];
Alexander Duyck13fde972011-10-05 13:35:24 +00006400 tx_desc = IGB_TX_DESC(tx_ring, i);
Alexander Duyck8542db02011-08-26 07:44:43 +00006401 i -= tx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08006402
Alexander Duyckf4128782012-09-13 06:28:01 +00006403 do {
6404 union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
Alexander Duyck8542db02011-08-26 07:44:43 +00006405
6406 /* if next_to_watch is not set then there is no work pending */
6407 if (!eop_desc)
6408 break;
Alexander Duyck13fde972011-10-05 13:35:24 +00006409
Alexander Duyckf4128782012-09-13 06:28:01 +00006410 /* prevent any other reads prior to eop_desc */
Alexander Duyck70d289b2013-01-08 07:01:03 +00006411 read_barrier_depends();
Alexander Duyckf4128782012-09-13 06:28:01 +00006412
Alexander Duyck13fde972011-10-05 13:35:24 +00006413 /* if DD is not set pending work has not been completed */
6414 if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
6415 break;
6416
Alexander Duyck8542db02011-08-26 07:44:43 +00006417 /* clear next_to_watch to prevent false hangs */
6418 tx_buffer->next_to_watch = NULL;
Alexander Duyck13fde972011-10-05 13:35:24 +00006419
Alexander Duyckebe42d12011-08-26 07:45:09 +00006420 /* update the statistics for this packet */
6421 total_bytes += tx_buffer->bytecount;
6422 total_packets += tx_buffer->gso_segs;
Alexander Duyck13fde972011-10-05 13:35:24 +00006423
Alexander Duyckebe42d12011-08-26 07:45:09 +00006424 /* free the skb */
Rick Jonesa81fb042014-09-17 03:56:20 +00006425 dev_consume_skb_any(tx_buffer->skb);
Alexander Duyckebe42d12011-08-26 07:45:09 +00006426
6427 /* unmap skb header data */
6428 dma_unmap_single(tx_ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006429 dma_unmap_addr(tx_buffer, dma),
6430 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00006431 DMA_TO_DEVICE);
6432
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006433 /* clear tx_buffer data */
6434 tx_buffer->skb = NULL;
6435 dma_unmap_len_set(tx_buffer, len, 0);
6436
Alexander Duyckebe42d12011-08-26 07:45:09 +00006437 /* clear last DMA location and unmap remaining buffers */
6438 while (tx_desc != eop_desc) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006439 tx_buffer++;
6440 tx_desc++;
Auke Kok9d5c8242008-01-24 02:22:38 -08006441 i++;
Alexander Duyck8542db02011-08-26 07:44:43 +00006442 if (unlikely(!i)) {
6443 i -= tx_ring->count;
Alexander Duyck06034642011-08-26 07:44:22 +00006444 tx_buffer = tx_ring->tx_buffer_info;
Alexander Duyck13fde972011-10-05 13:35:24 +00006445 tx_desc = IGB_TX_DESC(tx_ring, 0);
6446 }
Alexander Duyckebe42d12011-08-26 07:45:09 +00006447
6448 /* unmap any remaining paged data */
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006449 if (dma_unmap_len(tx_buffer, len)) {
Alexander Duyckebe42d12011-08-26 07:45:09 +00006450 dma_unmap_page(tx_ring->dev,
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006451 dma_unmap_addr(tx_buffer, dma),
6452 dma_unmap_len(tx_buffer, len),
Alexander Duyckebe42d12011-08-26 07:45:09 +00006453 DMA_TO_DEVICE);
Alexander Duyckc9f14bf32012-09-18 01:56:27 +00006454 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckebe42d12011-08-26 07:45:09 +00006455 }
6456 }
6457
Alexander Duyckebe42d12011-08-26 07:45:09 +00006458 /* move us one more past the eop_desc for start of next pkt */
6459 tx_buffer++;
6460 tx_desc++;
6461 i++;
6462 if (unlikely(!i)) {
6463 i -= tx_ring->count;
6464 tx_buffer = tx_ring->tx_buffer_info;
6465 tx_desc = IGB_TX_DESC(tx_ring, 0);
6466 }
Alexander Duyckf4128782012-09-13 06:28:01 +00006467
6468 /* issue prefetch for next Tx descriptor */
6469 prefetch(tx_desc);
6470
6471 /* update budget accounting */
6472 budget--;
6473 } while (likely(budget));
Alexander Duyck0e014cb2008-12-26 01:33:18 -08006474
Eric Dumazetbdbc0632012-01-04 20:23:36 +00006475 netdev_tx_completed_queue(txring_txq(tx_ring),
6476 total_packets, total_bytes);
Alexander Duyck8542db02011-08-26 07:44:43 +00006477 i += tx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08006478 tx_ring->next_to_clean = i;
Alexander Duyck13fde972011-10-05 13:35:24 +00006479 u64_stats_update_begin(&tx_ring->tx_syncp);
6480 tx_ring->tx_stats.bytes += total_bytes;
6481 tx_ring->tx_stats.packets += total_packets;
6482 u64_stats_update_end(&tx_ring->tx_syncp);
Alexander Duyck0ba82992011-08-26 07:45:47 +00006483 q_vector->tx.total_bytes += total_bytes;
6484 q_vector->tx.total_packets += total_packets;
Auke Kok9d5c8242008-01-24 02:22:38 -08006485
Alexander Duyck6d095fa2011-08-26 07:46:19 +00006486 if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006487 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck13fde972011-10-05 13:35:24 +00006488
Auke Kok9d5c8242008-01-24 02:22:38 -08006489 /* Detect a transmit hang in hardware, this serializes the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006490 * check with the clearing of time_stamp and movement of i
6491 */
Alexander Duyck6d095fa2011-08-26 07:46:19 +00006492 clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
Alexander Duyckf4128782012-09-13 06:28:01 +00006493 if (tx_buffer->next_to_watch &&
Alexander Duyck8542db02011-08-26 07:44:43 +00006494 time_after(jiffies, tx_buffer->time_stamp +
Joe Perches8e95a202009-12-03 07:58:21 +00006495 (adapter->tx_timeout_factor * HZ)) &&
6496 !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08006497
Auke Kok9d5c8242008-01-24 02:22:38 -08006498 /* detected Tx unit hang */
Alexander Duyck59d71982010-04-27 13:09:25 +00006499 dev_err(tx_ring->dev,
Auke Kok9d5c8242008-01-24 02:22:38 -08006500 "Detected Tx Unit Hang\n"
Alexander Duyck2d064c02008-07-08 15:10:12 -07006501 " Tx Queue <%d>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006502 " TDH <%x>\n"
6503 " TDT <%x>\n"
6504 " next_to_use <%x>\n"
6505 " next_to_clean <%x>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006506 "buffer_info[next_to_clean]\n"
6507 " time_stamp <%lx>\n"
Alexander Duyck8542db02011-08-26 07:44:43 +00006508 " next_to_watch <%p>\n"
Auke Kok9d5c8242008-01-24 02:22:38 -08006509 " jiffies <%lx>\n"
6510 " desc.status <%x>\n",
Alexander Duyck2d064c02008-07-08 15:10:12 -07006511 tx_ring->queue_index,
Alexander Duyck238ac812011-08-26 07:43:48 +00006512 rd32(E1000_TDH(tx_ring->reg_idx)),
Alexander Duyckfce99e32009-10-27 15:51:27 +00006513 readl(tx_ring->tail),
Auke Kok9d5c8242008-01-24 02:22:38 -08006514 tx_ring->next_to_use,
6515 tx_ring->next_to_clean,
Alexander Duyck8542db02011-08-26 07:44:43 +00006516 tx_buffer->time_stamp,
Alexander Duyckf4128782012-09-13 06:28:01 +00006517 tx_buffer->next_to_watch,
Auke Kok9d5c8242008-01-24 02:22:38 -08006518 jiffies,
Alexander Duyckf4128782012-09-13 06:28:01 +00006519 tx_buffer->next_to_watch->wb.status);
Alexander Duyck13fde972011-10-05 13:35:24 +00006520 netif_stop_subqueue(tx_ring->netdev,
6521 tx_ring->queue_index);
6522
6523 /* we are about to reset, no point in enabling stuff */
6524 return true;
Auke Kok9d5c8242008-01-24 02:22:38 -08006525 }
6526 }
Alexander Duyck13fde972011-10-05 13:35:24 +00006527
Alexander Duyck21ba6fe2013-02-09 04:27:48 +00006528#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Alexander Duyck13fde972011-10-05 13:35:24 +00006529 if (unlikely(total_packets &&
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006530 netif_carrier_ok(tx_ring->netdev) &&
6531 igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) {
Alexander Duyck13fde972011-10-05 13:35:24 +00006532 /* Make sure that anybody stopping the queue after this
6533 * sees the new next_to_clean.
6534 */
6535 smp_mb();
6536 if (__netif_subqueue_stopped(tx_ring->netdev,
6537 tx_ring->queue_index) &&
6538 !(test_bit(__IGB_DOWN, &adapter->state))) {
6539 netif_wake_subqueue(tx_ring->netdev,
6540 tx_ring->queue_index);
6541
6542 u64_stats_update_begin(&tx_ring->tx_syncp);
6543 tx_ring->tx_stats.restart_queue++;
6544 u64_stats_update_end(&tx_ring->tx_syncp);
6545 }
6546 }
6547
6548 return !!budget;
Auke Kok9d5c8242008-01-24 02:22:38 -08006549}
6550
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006551/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006552 * igb_reuse_rx_page - page flip buffer and store it back on the ring
6553 * @rx_ring: rx descriptor ring to store buffers on
6554 * @old_buff: donor buffer to have page reused
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006555 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006556 * Synchronizes page for reuse by the adapter
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006557 **/
6558static void igb_reuse_rx_page(struct igb_ring *rx_ring,
6559 struct igb_rx_buffer *old_buff)
6560{
6561 struct igb_rx_buffer *new_buff;
6562 u16 nta = rx_ring->next_to_alloc;
6563
6564 new_buff = &rx_ring->rx_buffer_info[nta];
6565
6566 /* update, and store next to alloc */
6567 nta++;
6568 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
6569
6570 /* transfer page from old buffer to new buffer */
Carolyn Wybornya1f63472014-04-11 02:20:44 +00006571 *new_buff = *old_buff;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006572
6573 /* sync the buffer for use by the device */
6574 dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma,
6575 old_buff->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +00006576 IGB_RX_BUFSZ,
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006577 DMA_FROM_DEVICE);
6578}
6579
Alexander Duyck95dd44b2014-11-14 00:56:19 +00006580static inline bool igb_page_is_reserved(struct page *page)
6581{
6582 return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc;
6583}
6584
Alexander Duyck74e238e2013-02-02 05:07:11 +00006585static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer,
6586 struct page *page,
6587 unsigned int truesize)
6588{
6589 /* avoid re-using remote pages */
Alexander Duyck95dd44b2014-11-14 00:56:19 +00006590 if (unlikely(igb_page_is_reserved(page)))
Roman Gushchinbc16e472014-10-23 03:32:27 +00006591 return false;
6592
Alexander Duyck74e238e2013-02-02 05:07:11 +00006593#if (PAGE_SIZE < 8192)
6594 /* if we are only owner of page we can reuse it */
6595 if (unlikely(page_count(page) != 1))
6596 return false;
6597
6598 /* flip page offset to other buffer */
6599 rx_buffer->page_offset ^= IGB_RX_BUFSZ;
Alexander Duyck74e238e2013-02-02 05:07:11 +00006600#else
6601 /* move offset up to the next cache line */
6602 rx_buffer->page_offset += truesize;
6603
6604 if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ))
6605 return false;
Alexander Duyck74e238e2013-02-02 05:07:11 +00006606#endif
6607
Alexander Duyck95dd44b2014-11-14 00:56:19 +00006608 /* Even if we own the page, we are not allowed to use atomic_set()
6609 * This would break get_page_unless_zero() users.
6610 */
6611 atomic_inc(&page->_count);
6612
Alexander Duyck74e238e2013-02-02 05:07:11 +00006613 return true;
6614}
6615
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006616/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006617 * igb_add_rx_frag - Add contents of Rx buffer to sk_buff
6618 * @rx_ring: rx descriptor ring to transact packets on
6619 * @rx_buffer: buffer containing page to add
6620 * @rx_desc: descriptor containing length of buffer written by hardware
6621 * @skb: sk_buff to place the data into
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006622 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006623 * This function will add the data contained in rx_buffer->page to the skb.
6624 * This is done either through a direct copy if the data in the buffer is
6625 * less than the skb header size, otherwise it will just attach the page as
6626 * a frag to the skb.
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006627 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006628 * The function will then update the page offset if necessary and return
6629 * true if the buffer can be reused by the adapter.
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006630 **/
6631static bool igb_add_rx_frag(struct igb_ring *rx_ring,
6632 struct igb_rx_buffer *rx_buffer,
6633 union e1000_adv_rx_desc *rx_desc,
6634 struct sk_buff *skb)
6635{
6636 struct page *page = rx_buffer->page;
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006637 unsigned char *va = page_address(page) + rx_buffer->page_offset;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006638 unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
Alexander Duyck74e238e2013-02-02 05:07:11 +00006639#if (PAGE_SIZE < 8192)
6640 unsigned int truesize = IGB_RX_BUFSZ;
6641#else
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006642 unsigned int truesize = SKB_DATA_ALIGN(size);
Alexander Duyck74e238e2013-02-02 05:07:11 +00006643#endif
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006644 unsigned int pull_len;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006645
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006646 if (unlikely(skb_is_nonlinear(skb)))
6647 goto add_tail_frag;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006648
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006649 if (unlikely(igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP))) {
6650 igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
6651 va += IGB_TS_HDR_LEN;
6652 size -= IGB_TS_HDR_LEN;
6653 }
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006654
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006655 if (likely(size <= IGB_RX_HDR_LEN)) {
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006656 memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
6657
Alexander Duyck95dd44b2014-11-14 00:56:19 +00006658 /* page is not reserved, we can reuse buffer as-is */
6659 if (likely(!igb_page_is_reserved(page)))
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006660 return true;
6661
6662 /* this page cannot be reused so discard it */
Alexander Duyck95dd44b2014-11-14 00:56:19 +00006663 __free_page(page);
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006664 return false;
6665 }
6666
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006667 /* we need the header to contain the greater of either ETH_HLEN or
6668 * 60 bytes if the skb->len is less than 60 for skb_pad.
6669 */
6670 pull_len = eth_get_headlen(va, IGB_RX_HDR_LEN);
6671
6672 /* align pull length to size of long to optimize memcpy performance */
6673 memcpy(__skb_put(skb, pull_len), va, ALIGN(pull_len, sizeof(long)));
6674
6675 /* update all of the pointers */
6676 va += pull_len;
6677 size -= pull_len;
6678
6679add_tail_frag:
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006680 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
Alexander Duyckf56e7bb2015-04-22 21:49:17 -07006681 (unsigned long)va & ~PAGE_MASK, size, truesize);
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006682
Alexander Duyck74e238e2013-02-02 05:07:11 +00006683 return igb_can_reuse_rx_page(rx_buffer, page, truesize);
6684}
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006685
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006686static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring,
6687 union e1000_adv_rx_desc *rx_desc,
6688 struct sk_buff *skb)
6689{
6690 struct igb_rx_buffer *rx_buffer;
6691 struct page *page;
6692
6693 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006694 page = rx_buffer->page;
6695 prefetchw(page);
6696
6697 if (likely(!skb)) {
6698 void *page_addr = page_address(page) +
6699 rx_buffer->page_offset;
6700
6701 /* prefetch first cache line of first page */
6702 prefetch(page_addr);
6703#if L1_CACHE_BYTES < 128
6704 prefetch(page_addr + L1_CACHE_BYTES);
6705#endif
6706
6707 /* allocate a skb to store the frags */
Alexander Duyck67fd8932014-12-09 19:40:56 -08006708 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IGB_RX_HDR_LEN);
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006709 if (unlikely(!skb)) {
6710 rx_ring->rx_stats.alloc_failed++;
6711 return NULL;
6712 }
6713
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006714 /* we will be copying header into skb->data in
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006715 * pskb_may_pull so it is in our interest to prefetch
6716 * it now to avoid a possible cache miss
6717 */
6718 prefetchw(skb->data);
6719 }
6720
6721 /* we are reusing so sync this buffer for CPU use */
6722 dma_sync_single_range_for_cpu(rx_ring->dev,
6723 rx_buffer->dma,
6724 rx_buffer->page_offset,
Alexander Duyckde78d1f2012-09-25 00:31:12 +00006725 IGB_RX_BUFSZ,
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006726 DMA_FROM_DEVICE);
6727
6728 /* pull page into skb */
6729 if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
6730 /* hand second half of page back to the ring */
6731 igb_reuse_rx_page(rx_ring, rx_buffer);
6732 } else {
6733 /* we are not reusing the buffer so unmap it */
6734 dma_unmap_page(rx_ring->dev, rx_buffer->dma,
6735 PAGE_SIZE, DMA_FROM_DEVICE);
6736 }
6737
6738 /* clear contents of rx_buffer */
6739 rx_buffer->page = NULL;
6740
6741 return skb;
6742}
6743
Alexander Duyckcd392f52011-08-26 07:43:59 +00006744static inline void igb_rx_checksum(struct igb_ring *ring,
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006745 union e1000_adv_rx_desc *rx_desc,
6746 struct sk_buff *skb)
Auke Kok9d5c8242008-01-24 02:22:38 -08006747{
Eric Dumazetbc8acf22010-09-02 13:07:41 -07006748 skb_checksum_none_assert(skb);
Auke Kok9d5c8242008-01-24 02:22:38 -08006749
Alexander Duyck294e7d72011-08-26 07:45:57 +00006750 /* Ignore Checksum bit is set */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006751 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM))
Alexander Duyck294e7d72011-08-26 07:45:57 +00006752 return;
6753
6754 /* Rx checksum disabled via ethtool */
6755 if (!(ring->netdev->features & NETIF_F_RXCSUM))
Auke Kok9d5c8242008-01-24 02:22:38 -08006756 return;
Alexander Duyck85ad76b2009-10-27 15:52:46 +00006757
Auke Kok9d5c8242008-01-24 02:22:38 -08006758 /* TCP/UDP checksum error bit is set */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006759 if (igb_test_staterr(rx_desc,
6760 E1000_RXDEXT_STATERR_TCPE |
6761 E1000_RXDEXT_STATERR_IPE)) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006762 /* work around errata with sctp packets where the TCPE aka
Jesse Brandeburgb9473562009-04-27 22:36:13 +00006763 * L4E bit is set incorrectly on 64 byte (60 byte w/o crc)
6764 * packets, (aka let the stack check the crc32c)
6765 */
Alexander Duyck866cff02011-08-26 07:45:36 +00006766 if (!((skb->len == 60) &&
6767 test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) {
Eric Dumazet12dcd862010-10-15 17:27:10 +00006768 u64_stats_update_begin(&ring->rx_syncp);
Alexander Duyck04a5fcaa2009-10-27 15:52:27 +00006769 ring->rx_stats.csum_err++;
Eric Dumazet12dcd862010-10-15 17:27:10 +00006770 u64_stats_update_end(&ring->rx_syncp);
6771 }
Auke Kok9d5c8242008-01-24 02:22:38 -08006772 /* let the stack verify checksum errors */
Auke Kok9d5c8242008-01-24 02:22:38 -08006773 return;
6774 }
6775 /* It must be a TCP or UDP packet with a valid checksum */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006776 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS |
6777 E1000_RXD_STAT_UDPCS))
Auke Kok9d5c8242008-01-24 02:22:38 -08006778 skb->ip_summed = CHECKSUM_UNNECESSARY;
6779
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006780 dev_dbg(ring->dev, "cksum success: bits %08X\n",
6781 le32_to_cpu(rx_desc->wb.upper.status_error));
Auke Kok9d5c8242008-01-24 02:22:38 -08006782}
6783
Alexander Duyck077887c2011-08-26 07:46:29 +00006784static inline void igb_rx_hash(struct igb_ring *ring,
6785 union e1000_adv_rx_desc *rx_desc,
6786 struct sk_buff *skb)
6787{
6788 if (ring->netdev->features & NETIF_F_RXHASH)
Tom Herbert42bdf082013-12-18 16:46:58 +00006789 skb_set_hash(skb,
6790 le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
6791 PKT_HASH_TYPE_L3);
Alexander Duyck077887c2011-08-26 07:46:29 +00006792}
6793
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006794/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006795 * igb_is_non_eop - process handling of non-EOP buffers
6796 * @rx_ring: Rx ring being processed
6797 * @rx_desc: Rx descriptor for current buffer
6798 * @skb: current socket buffer containing buffer in progress
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006799 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006800 * This function updates next to clean. If the buffer is an EOP buffer
6801 * this function exits returning false, otherwise it will place the
6802 * sk_buff in the next buffer to be chained and return true indicating
6803 * that this is in fact a non-EOP buffer.
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006804 **/
6805static bool igb_is_non_eop(struct igb_ring *rx_ring,
6806 union e1000_adv_rx_desc *rx_desc)
6807{
6808 u32 ntc = rx_ring->next_to_clean + 1;
6809
6810 /* fetch, update, and store next to clean */
6811 ntc = (ntc < rx_ring->count) ? ntc : 0;
6812 rx_ring->next_to_clean = ntc;
6813
6814 prefetch(IGB_RX_DESC(rx_ring, ntc));
6815
6816 if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)))
6817 return false;
6818
6819 return true;
6820}
6821
6822/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006823 * igb_cleanup_headers - Correct corrupted or empty headers
6824 * @rx_ring: rx descriptor ring packet is being transacted on
6825 * @rx_desc: pointer to the EOP Rx descriptor
6826 * @skb: pointer to current skb being fixed
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006827 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006828 * Address the case where we are pulling data in on pages only
6829 * and as such no data is present in the skb header.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006830 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006831 * In addition if skb is not at least 60 bytes we need to pad it so that
6832 * it is large enough to qualify as a valid Ethernet frame.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006833 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006834 * Returns true if an error was encountered and skb was freed.
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006835 **/
6836static bool igb_cleanup_headers(struct igb_ring *rx_ring,
6837 union e1000_adv_rx_desc *rx_desc,
6838 struct sk_buff *skb)
6839{
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006840 if (unlikely((igb_test_staterr(rx_desc,
6841 E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) {
6842 struct net_device *netdev = rx_ring->netdev;
6843 if (!(netdev->features & NETIF_F_RXALL)) {
6844 dev_kfree_skb_any(skb);
6845 return true;
6846 }
6847 }
6848
Alexander Duycka94d9e22014-12-03 08:17:39 -08006849 /* if eth_skb_pad returns an error the skb was freed */
6850 if (eth_skb_pad(skb))
6851 return true;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006852
6853 return false;
Alexander Duyck2d94d8a2009-07-23 18:10:06 +00006854}
6855
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006856/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006857 * igb_process_skb_fields - Populate skb header fields from Rx descriptor
6858 * @rx_ring: rx descriptor ring packet is being transacted on
6859 * @rx_desc: pointer to the EOP Rx descriptor
6860 * @skb: pointer to current skb being populated
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006861 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006862 * This function checks the ring, descriptor, and packet information in
6863 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
6864 * other fields within the skb.
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006865 **/
6866static void igb_process_skb_fields(struct igb_ring *rx_ring,
6867 union e1000_adv_rx_desc *rx_desc,
6868 struct sk_buff *skb)
6869{
6870 struct net_device *dev = rx_ring->netdev;
6871
6872 igb_rx_hash(rx_ring, rx_desc, skb);
6873
6874 igb_rx_checksum(rx_ring, rx_desc, skb);
6875
Jakub Kicinski5499a962014-04-02 10:33:33 +00006876 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) &&
6877 !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP))
6878 igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb);
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006879
Patrick McHardyf6469682013-04-19 02:04:27 +00006880 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006881 igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) {
6882 u16 vid;
Carolyn Wyborny9005df32014-04-11 01:45:34 +00006883
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006884 if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) &&
6885 test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags))
6886 vid = be16_to_cpu(rx_desc->wb.upper.vlan);
6887 else
6888 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
6889
Patrick McHardy86a9bad2013-04-19 02:04:30 +00006890 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006891 }
6892
6893 skb_record_rx_queue(skb, rx_ring->queue_index);
6894
6895 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
6896}
6897
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006898static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget)
Auke Kok9d5c8242008-01-24 02:22:38 -08006899{
Alexander Duyck0ba82992011-08-26 07:45:47 +00006900 struct igb_ring *rx_ring = q_vector->rx.ring;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006901 struct sk_buff *skb = rx_ring->skb;
Auke Kok9d5c8242008-01-24 02:22:38 -08006902 unsigned int total_bytes = 0, total_packets = 0;
Alexander Duyck16eb8812011-08-26 07:43:54 +00006903 u16 cleaned_count = igb_desc_unused(rx_ring);
Auke Kok9d5c8242008-01-24 02:22:38 -08006904
Eric W. Biederman57ba34c2014-03-14 18:00:06 -07006905 while (likely(total_packets < budget)) {
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006906 union e1000_adv_rx_desc *rx_desc;
Auke Kok9d5c8242008-01-24 02:22:38 -08006907
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006908 /* return some buffers to hardware, one at a time is too slow */
6909 if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
6910 igb_alloc_rx_buffers(rx_ring, cleaned_count);
6911 cleaned_count = 0;
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07006912 }
6913
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006914 rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean);
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07006915
Alexander Duyck124b74c2014-12-11 15:02:28 -08006916 if (!rx_desc->wb.upper.status_error)
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006917 break;
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07006918
Alexander Duyck74e238e2013-02-02 05:07:11 +00006919 /* This memory barrier is needed to keep us from reading
6920 * any other fields out of the rx_desc until we know the
Alexander Duyck124b74c2014-12-11 15:02:28 -08006921 * descriptor has been written back
Alexander Duyck74e238e2013-02-02 05:07:11 +00006922 */
Alexander Duyck124b74c2014-12-11 15:02:28 -08006923 dma_rmb();
Alexander Duyck74e238e2013-02-02 05:07:11 +00006924
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006925 /* retrieve a buffer from the ring */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00006926 skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb);
Alexander Duyck16eb8812011-08-26 07:43:54 +00006927
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006928 /* exit if we failed to retrieve a buffer */
6929 if (!skb)
6930 break;
6931
6932 cleaned_count++;
6933
6934 /* fetch next buffer in frame if non-eop */
6935 if (igb_is_non_eop(rx_ring, rx_desc))
6936 continue;
Alexander Duyck44390ca2011-08-26 07:43:38 +00006937
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006938 /* verify the packet layout is correct */
6939 if (igb_cleanup_headers(rx_ring, rx_desc, skb)) {
6940 skb = NULL;
6941 continue;
Auke Kok9d5c8242008-01-24 02:22:38 -08006942 }
Auke Kok9d5c8242008-01-24 02:22:38 -08006943
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006944 /* probably a little skewed due to removing CRC */
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006945 total_bytes += skb->len;
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006946
Alexander Duyckdb2ee5b2012-09-25 00:30:57 +00006947 /* populate checksum, timestamp, VLAN, and protocol */
6948 igb_process_skb_fields(rx_ring, rx_desc, skb);
Alexander Duyck3ceb90f2011-08-26 07:46:03 +00006949
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00006950 napi_gro_receive(&q_vector->napi, skb);
Auke Kok9d5c8242008-01-24 02:22:38 -08006951
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006952 /* reset skb pointer */
6953 skb = NULL;
6954
Alexander Duyck2e334ee2012-09-25 00:31:07 +00006955 /* update budget accounting */
6956 total_packets++;
Eric W. Biederman57ba34c2014-03-14 18:00:06 -07006957 }
Alexander Duyckbf36c1a2008-07-08 15:11:40 -07006958
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006959 /* place incomplete frames back on ring for completion */
6960 rx_ring->skb = skb;
6961
Eric Dumazet12dcd862010-10-15 17:27:10 +00006962 u64_stats_update_begin(&rx_ring->rx_syncp);
Auke Kok9d5c8242008-01-24 02:22:38 -08006963 rx_ring->rx_stats.packets += total_packets;
6964 rx_ring->rx_stats.bytes += total_bytes;
Eric Dumazet12dcd862010-10-15 17:27:10 +00006965 u64_stats_update_end(&rx_ring->rx_syncp);
Alexander Duyck0ba82992011-08-26 07:45:47 +00006966 q_vector->rx.total_packets += total_packets;
6967 q_vector->rx.total_bytes += total_bytes;
Alexander Duyckc023cd82011-08-26 07:43:43 +00006968
6969 if (cleaned_count)
Alexander Duyckcd392f52011-08-26 07:43:59 +00006970 igb_alloc_rx_buffers(rx_ring, cleaned_count);
Alexander Duyckc023cd82011-08-26 07:43:43 +00006971
Carolyn Wybornyda1f1df2014-04-11 02:11:17 +00006972 return total_packets < budget;
Auke Kok9d5c8242008-01-24 02:22:38 -08006973}
6974
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006975static bool igb_alloc_mapped_page(struct igb_ring *rx_ring,
6976 struct igb_rx_buffer *bi)
Alexander Duyckc023cd82011-08-26 07:43:43 +00006977{
Alexander Duyck1a1c2252012-09-25 00:30:52 +00006978 struct page *page = bi->page;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006979 dma_addr_t dma;
Alexander Duyckc023cd82011-08-26 07:43:43 +00006980
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006981 /* since we are recycling buffers we should seldom need to alloc */
6982 if (likely(page))
Alexander Duyckc023cd82011-08-26 07:43:43 +00006983 return true;
6984
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006985 /* alloc new page for storage */
Alexander Duyck42b17f02014-11-11 09:26:57 -08006986 page = dev_alloc_page();
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006987 if (unlikely(!page)) {
6988 rx_ring->rx_stats.alloc_failed++;
6989 return false;
Alexander Duyckc023cd82011-08-26 07:43:43 +00006990 }
6991
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006992 /* map page for use */
6993 dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
Alexander Duyckc023cd82011-08-26 07:43:43 +00006994
Jeff Kirsherb980ac12013-02-23 07:29:56 +00006995 /* if mapping failed free memory back to system since
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006996 * there isn't much point in holding memory we can't use
6997 */
Alexander Duyckc023cd82011-08-26 07:43:43 +00006998 if (dma_mapping_error(rx_ring->dev, dma)) {
Alexander Duyckcbc8e552012-09-25 00:31:02 +00006999 __free_page(page);
7000
Alexander Duyckc023cd82011-08-26 07:43:43 +00007001 rx_ring->rx_stats.alloc_failed++;
7002 return false;
7003 }
7004
7005 bi->dma = dma;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007006 bi->page = page;
7007 bi->page_offset = 0;
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007008
Alexander Duyckc023cd82011-08-26 07:43:43 +00007009 return true;
7010}
7011
Auke Kok9d5c8242008-01-24 02:22:38 -08007012/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007013 * igb_alloc_rx_buffers - Replace used receive buffers; packet split
7014 * @adapter: address of board private structure
Auke Kok9d5c8242008-01-24 02:22:38 -08007015 **/
Alexander Duyckcd392f52011-08-26 07:43:59 +00007016void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count)
Auke Kok9d5c8242008-01-24 02:22:38 -08007017{
Auke Kok9d5c8242008-01-24 02:22:38 -08007018 union e1000_adv_rx_desc *rx_desc;
Alexander Duyck06034642011-08-26 07:44:22 +00007019 struct igb_rx_buffer *bi;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007020 u16 i = rx_ring->next_to_use;
Auke Kok9d5c8242008-01-24 02:22:38 -08007021
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007022 /* nothing to do */
7023 if (!cleaned_count)
7024 return;
7025
Alexander Duyck601369062011-08-26 07:44:05 +00007026 rx_desc = IGB_RX_DESC(rx_ring, i);
Alexander Duyck06034642011-08-26 07:44:22 +00007027 bi = &rx_ring->rx_buffer_info[i];
Alexander Duyckc023cd82011-08-26 07:43:43 +00007028 i -= rx_ring->count;
Auke Kok9d5c8242008-01-24 02:22:38 -08007029
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007030 do {
Alexander Duyck1a1c2252012-09-25 00:30:52 +00007031 if (!igb_alloc_mapped_page(rx_ring, bi))
Alexander Duyckc023cd82011-08-26 07:43:43 +00007032 break;
Auke Kok9d5c8242008-01-24 02:22:38 -08007033
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007034 /* Refresh the desc even if buffer_addrs didn't change
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007035 * because each write-back erases this info.
7036 */
Alexander Duyckf9d40f62013-04-17 20:41:04 +00007037 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
Auke Kok9d5c8242008-01-24 02:22:38 -08007038
Alexander Duyckc023cd82011-08-26 07:43:43 +00007039 rx_desc++;
7040 bi++;
Auke Kok9d5c8242008-01-24 02:22:38 -08007041 i++;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007042 if (unlikely(!i)) {
Alexander Duyck601369062011-08-26 07:44:05 +00007043 rx_desc = IGB_RX_DESC(rx_ring, 0);
Alexander Duyck06034642011-08-26 07:44:22 +00007044 bi = rx_ring->rx_buffer_info;
Alexander Duyckc023cd82011-08-26 07:43:43 +00007045 i -= rx_ring->count;
7046 }
7047
Alexander Duyck95dd44b2014-11-14 00:56:19 +00007048 /* clear the status bits for the next_to_use descriptor */
7049 rx_desc->wb.upper.status_error = 0;
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007050
7051 cleaned_count--;
7052 } while (cleaned_count);
Auke Kok9d5c8242008-01-24 02:22:38 -08007053
Alexander Duyckc023cd82011-08-26 07:43:43 +00007054 i += rx_ring->count;
7055
Auke Kok9d5c8242008-01-24 02:22:38 -08007056 if (rx_ring->next_to_use != i) {
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007057 /* record the next descriptor to use */
Auke Kok9d5c8242008-01-24 02:22:38 -08007058 rx_ring->next_to_use = i;
Auke Kok9d5c8242008-01-24 02:22:38 -08007059
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007060 /* update next to alloc since we have filled the ring */
7061 rx_ring->next_to_alloc = i;
7062
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007063 /* Force memory writes to complete before letting h/w
Auke Kok9d5c8242008-01-24 02:22:38 -08007064 * know there are new descriptors to fetch. (Only
7065 * applicable for weak-ordered memory model archs,
Alexander Duyckcbc8e552012-09-25 00:31:02 +00007066 * such as IA-64).
7067 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007068 wmb();
Alexander Duyckfce99e32009-10-27 15:51:27 +00007069 writel(i, rx_ring->tail);
Auke Kok9d5c8242008-01-24 02:22:38 -08007070 }
7071}
7072
7073/**
7074 * igb_mii_ioctl -
7075 * @netdev:
7076 * @ifreq:
7077 * @cmd:
7078 **/
7079static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
7080{
7081 struct igb_adapter *adapter = netdev_priv(netdev);
7082 struct mii_ioctl_data *data = if_mii(ifr);
7083
7084 if (adapter->hw.phy.media_type != e1000_media_type_copper)
7085 return -EOPNOTSUPP;
7086
7087 switch (cmd) {
7088 case SIOCGMIIPHY:
7089 data->phy_id = adapter->hw.phy.addr;
7090 break;
7091 case SIOCGMIIREG:
Alexander Duyckf5f4cf02008-11-21 21:30:24 -08007092 if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
Carolyn Wyborny9005df32014-04-11 01:45:34 +00007093 &data->val_out))
Auke Kok9d5c8242008-01-24 02:22:38 -08007094 return -EIO;
7095 break;
7096 case SIOCSMIIREG:
7097 default:
7098 return -EOPNOTSUPP;
7099 }
7100 return 0;
7101}
7102
7103/**
7104 * igb_ioctl -
7105 * @netdev:
7106 * @ifreq:
7107 * @cmd:
7108 **/
7109static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
7110{
7111 switch (cmd) {
7112 case SIOCGMIIPHY:
7113 case SIOCGMIIREG:
7114 case SIOCSMIIREG:
7115 return igb_mii_ioctl(netdev, ifr, cmd);
Jacob Keller6ab5f7b2014-01-11 07:20:06 +00007116 case SIOCGHWTSTAMP:
7117 return igb_ptp_get_ts_config(netdev, ifr);
Patrick Ohlyc6cb0902009-02-12 05:03:42 +00007118 case SIOCSHWTSTAMP:
Jacob Keller6ab5f7b2014-01-11 07:20:06 +00007119 return igb_ptp_set_ts_config(netdev, ifr);
Auke Kok9d5c8242008-01-24 02:22:38 -08007120 default:
7121 return -EOPNOTSUPP;
7122 }
7123}
7124
Todd Fujinaka94826482014-07-10 01:47:15 -07007125void igb_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
7126{
7127 struct igb_adapter *adapter = hw->back;
7128
7129 pci_read_config_word(adapter->pdev, reg, value);
7130}
7131
7132void igb_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
7133{
7134 struct igb_adapter *adapter = hw->back;
7135
7136 pci_write_config_word(adapter->pdev, reg, *value);
7137}
7138
Alexander Duyck009bc062009-07-23 18:08:35 +00007139s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
7140{
7141 struct igb_adapter *adapter = hw->back;
Alexander Duyck009bc062009-07-23 18:08:35 +00007142
Jiang Liu23d028c2012-08-20 13:32:20 -06007143 if (pcie_capability_read_word(adapter->pdev, reg, value))
Alexander Duyck009bc062009-07-23 18:08:35 +00007144 return -E1000_ERR_CONFIG;
7145
Alexander Duyck009bc062009-07-23 18:08:35 +00007146 return 0;
7147}
7148
7149s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
7150{
7151 struct igb_adapter *adapter = hw->back;
Alexander Duyck009bc062009-07-23 18:08:35 +00007152
Jiang Liu23d028c2012-08-20 13:32:20 -06007153 if (pcie_capability_write_word(adapter->pdev, reg, *value))
Alexander Duyck009bc062009-07-23 18:08:35 +00007154 return -E1000_ERR_CONFIG;
7155
Alexander Duyck009bc062009-07-23 18:08:35 +00007156 return 0;
7157}
7158
Michał Mirosławc8f44af2011-11-15 15:29:55 +00007159static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features)
Auke Kok9d5c8242008-01-24 02:22:38 -08007160{
7161 struct igb_adapter *adapter = netdev_priv(netdev);
7162 struct e1000_hw *hw = &adapter->hw;
7163 u32 ctrl, rctl;
Patrick McHardyf6469682013-04-19 02:04:27 +00007164 bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX);
Auke Kok9d5c8242008-01-24 02:22:38 -08007165
Alexander Duyck5faf0302011-08-26 07:46:08 +00007166 if (enable) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007167 /* enable VLAN tag insert/strip */
7168 ctrl = rd32(E1000_CTRL);
7169 ctrl |= E1000_CTRL_VME;
7170 wr32(E1000_CTRL, ctrl);
7171
Alexander Duyck51466232009-10-27 23:47:35 +00007172 /* Disable CFI check */
Auke Kok9d5c8242008-01-24 02:22:38 -08007173 rctl = rd32(E1000_RCTL);
Auke Kok9d5c8242008-01-24 02:22:38 -08007174 rctl &= ~E1000_RCTL_CFIEN;
7175 wr32(E1000_RCTL, rctl);
Auke Kok9d5c8242008-01-24 02:22:38 -08007176 } else {
7177 /* disable VLAN tag insert/strip */
7178 ctrl = rd32(E1000_CTRL);
7179 ctrl &= ~E1000_CTRL_VME;
7180 wr32(E1000_CTRL, ctrl);
Auke Kok9d5c8242008-01-24 02:22:38 -08007181 }
7182
Alexander Duycke1739522009-02-19 20:39:44 -08007183 igb_rlpml_set(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007184}
7185
Patrick McHardy80d5c362013-04-19 02:04:28 +00007186static int igb_vlan_rx_add_vid(struct net_device *netdev,
7187 __be16 proto, u16 vid)
Auke Kok9d5c8242008-01-24 02:22:38 -08007188{
7189 struct igb_adapter *adapter = netdev_priv(netdev);
7190 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007191 int pf_id = adapter->vfs_allocated_count;
Auke Kok9d5c8242008-01-24 02:22:38 -08007192
Alexander Duyck51466232009-10-27 23:47:35 +00007193 /* attempt to add filter to vlvf array */
7194 igb_vlvf_set(adapter, vid, true, pf_id);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007195
Alexander Duyck51466232009-10-27 23:47:35 +00007196 /* add the filter since PF can receive vlans w/o entry in vlvf */
7197 igb_vfta_set(hw, vid, true);
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007198
7199 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05007200
7201 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08007202}
7203
Patrick McHardy80d5c362013-04-19 02:04:28 +00007204static int igb_vlan_rx_kill_vid(struct net_device *netdev,
7205 __be16 proto, u16 vid)
Auke Kok9d5c8242008-01-24 02:22:38 -08007206{
7207 struct igb_adapter *adapter = netdev_priv(netdev);
7208 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007209 int pf_id = adapter->vfs_allocated_count;
Alexander Duyck51466232009-10-27 23:47:35 +00007210 s32 err;
Auke Kok9d5c8242008-01-24 02:22:38 -08007211
Alexander Duyck51466232009-10-27 23:47:35 +00007212 /* remove vlan from VLVF table array */
7213 err = igb_vlvf_set(adapter, vid, false, pf_id);
Auke Kok9d5c8242008-01-24 02:22:38 -08007214
Alexander Duyck51466232009-10-27 23:47:35 +00007215 /* if vid was not present in VLVF just remove it from table */
7216 if (err)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007217 igb_vfta_set(hw, vid, false);
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007218
7219 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05007220
7221 return 0;
Auke Kok9d5c8242008-01-24 02:22:38 -08007222}
7223
7224static void igb_restore_vlan(struct igb_adapter *adapter)
7225{
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007226 u16 vid;
Auke Kok9d5c8242008-01-24 02:22:38 -08007227
Alexander Duyck5faf0302011-08-26 07:46:08 +00007228 igb_vlan_mode(adapter->netdev, adapter->netdev->features);
7229
Jiri Pirkob2cb09b2011-07-21 03:27:27 +00007230 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Patrick McHardy80d5c362013-04-19 02:04:28 +00007231 igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
Auke Kok9d5c8242008-01-24 02:22:38 -08007232}
7233
David Decotigny14ad2512011-04-27 18:32:43 +00007234int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx)
Auke Kok9d5c8242008-01-24 02:22:38 -08007235{
Alexander Duyck090b1792009-10-27 23:51:55 +00007236 struct pci_dev *pdev = adapter->pdev;
Auke Kok9d5c8242008-01-24 02:22:38 -08007237 struct e1000_mac_info *mac = &adapter->hw.mac;
7238
7239 mac->autoneg = 0;
7240
David Decotigny14ad2512011-04-27 18:32:43 +00007241 /* Make sure dplx is at most 1 bit and lsb of speed is not set
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007242 * for the switch() below to work
7243 */
David Decotigny14ad2512011-04-27 18:32:43 +00007244 if ((spd & 1) || (dplx & ~1))
7245 goto err_inval;
7246
Akeem G. Abodunrinf502ef72013-04-05 16:49:06 +00007247 /* Fiber NIC's only allow 1000 gbps Full duplex
7248 * and 100Mbps Full duplex for 100baseFx sfp
7249 */
7250 if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) {
7251 switch (spd + dplx) {
7252 case SPEED_10 + DUPLEX_HALF:
7253 case SPEED_10 + DUPLEX_FULL:
7254 case SPEED_100 + DUPLEX_HALF:
7255 goto err_inval;
7256 default:
7257 break;
7258 }
7259 }
Carolyn Wybornycd2638a2010-10-12 22:27:02 +00007260
David Decotigny14ad2512011-04-27 18:32:43 +00007261 switch (spd + dplx) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007262 case SPEED_10 + DUPLEX_HALF:
7263 mac->forced_speed_duplex = ADVERTISE_10_HALF;
7264 break;
7265 case SPEED_10 + DUPLEX_FULL:
7266 mac->forced_speed_duplex = ADVERTISE_10_FULL;
7267 break;
7268 case SPEED_100 + DUPLEX_HALF:
7269 mac->forced_speed_duplex = ADVERTISE_100_HALF;
7270 break;
7271 case SPEED_100 + DUPLEX_FULL:
7272 mac->forced_speed_duplex = ADVERTISE_100_FULL;
7273 break;
7274 case SPEED_1000 + DUPLEX_FULL:
7275 mac->autoneg = 1;
7276 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
7277 break;
7278 case SPEED_1000 + DUPLEX_HALF: /* not supported */
7279 default:
David Decotigny14ad2512011-04-27 18:32:43 +00007280 goto err_inval;
Auke Kok9d5c8242008-01-24 02:22:38 -08007281 }
Jesse Brandeburg8376dad2012-07-26 02:31:19 +00007282
7283 /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
7284 adapter->hw.phy.mdix = AUTO_ALL_MODES;
7285
Auke Kok9d5c8242008-01-24 02:22:38 -08007286 return 0;
David Decotigny14ad2512011-04-27 18:32:43 +00007287
7288err_inval:
7289 dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
7290 return -EINVAL;
Auke Kok9d5c8242008-01-24 02:22:38 -08007291}
7292
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007293static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake,
7294 bool runtime)
Auke Kok9d5c8242008-01-24 02:22:38 -08007295{
7296 struct net_device *netdev = pci_get_drvdata(pdev);
7297 struct igb_adapter *adapter = netdev_priv(netdev);
7298 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck2d064c02008-07-08 15:10:12 -07007299 u32 ctrl, rctl, status;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007300 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
Auke Kok9d5c8242008-01-24 02:22:38 -08007301#ifdef CONFIG_PM
7302 int retval = 0;
7303#endif
7304
7305 netif_device_detach(netdev);
7306
Alexander Duycka88f10e2008-07-08 15:13:38 -07007307 if (netif_running(netdev))
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007308 __igb_close(netdev, true);
Alexander Duycka88f10e2008-07-08 15:13:38 -07007309
Alexander Duyck047e0032009-10-27 15:49:27 +00007310 igb_clear_interrupt_scheme(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007311
7312#ifdef CONFIG_PM
7313 retval = pci_save_state(pdev);
7314 if (retval)
7315 return retval;
7316#endif
7317
7318 status = rd32(E1000_STATUS);
7319 if (status & E1000_STATUS_LU)
7320 wufc &= ~E1000_WUFC_LNKC;
7321
7322 if (wufc) {
7323 igb_setup_rctl(adapter);
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007324 igb_set_rx_mode(netdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007325
7326 /* turn on all-multi mode if wake on multicast is enabled */
7327 if (wufc & E1000_WUFC_MC) {
7328 rctl = rd32(E1000_RCTL);
7329 rctl |= E1000_RCTL_MPE;
7330 wr32(E1000_RCTL, rctl);
7331 }
7332
7333 ctrl = rd32(E1000_CTRL);
7334 /* advertise wake from D3Cold */
7335 #define E1000_CTRL_ADVD3WUC 0x00100000
7336 /* phy power management enable */
7337 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
7338 ctrl |= E1000_CTRL_ADVD3WUC;
7339 wr32(E1000_CTRL, ctrl);
7340
Auke Kok9d5c8242008-01-24 02:22:38 -08007341 /* Allow time for pending master requests to run */
Alexander Duyck330a6d62009-10-27 23:51:35 +00007342 igb_disable_pcie_master(hw);
Auke Kok9d5c8242008-01-24 02:22:38 -08007343
7344 wr32(E1000_WUC, E1000_WUC_PME_EN);
7345 wr32(E1000_WUFC, wufc);
Auke Kok9d5c8242008-01-24 02:22:38 -08007346 } else {
7347 wr32(E1000_WUC, 0);
7348 wr32(E1000_WUFC, 0);
Auke Kok9d5c8242008-01-24 02:22:38 -08007349 }
7350
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007351 *enable_wake = wufc || adapter->en_mng_pt;
7352 if (!*enable_wake)
Nick Nunley88a268c2010-02-17 01:01:59 +00007353 igb_power_down_link(adapter);
7354 else
7355 igb_power_up_link(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007356
7357 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007358 * would have already happened in close and is redundant.
7359 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007360 igb_release_hw_control(adapter);
7361
7362 pci_disable_device(pdev);
7363
Auke Kok9d5c8242008-01-24 02:22:38 -08007364 return 0;
7365}
7366
7367#ifdef CONFIG_PM
Emil Tantilovd9dd9662012-01-28 08:10:35 +00007368#ifdef CONFIG_PM_SLEEP
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007369static int igb_suspend(struct device *dev)
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007370{
7371 int retval;
7372 bool wake;
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007373 struct pci_dev *pdev = to_pci_dev(dev);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007374
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007375 retval = __igb_shutdown(pdev, &wake, 0);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007376 if (retval)
7377 return retval;
7378
7379 if (wake) {
7380 pci_prepare_to_sleep(pdev);
7381 } else {
7382 pci_wake_from_d3(pdev, false);
7383 pci_set_power_state(pdev, PCI_D3hot);
7384 }
7385
7386 return 0;
7387}
Emil Tantilovd9dd9662012-01-28 08:10:35 +00007388#endif /* CONFIG_PM_SLEEP */
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007389
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007390static int igb_resume(struct device *dev)
Auke Kok9d5c8242008-01-24 02:22:38 -08007391{
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007392 struct pci_dev *pdev = to_pci_dev(dev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007393 struct net_device *netdev = pci_get_drvdata(pdev);
7394 struct igb_adapter *adapter = netdev_priv(netdev);
7395 struct e1000_hw *hw = &adapter->hw;
7396 u32 err;
7397
7398 pci_set_power_state(pdev, PCI_D0);
7399 pci_restore_state(pdev);
Nick Nunleyb94f2d72010-02-17 01:02:19 +00007400 pci_save_state(pdev);
Taku Izumi42bfd33a2008-06-20 12:10:30 +09007401
Carolyn Wyborny17a402a2014-11-21 23:52:54 -08007402 if (!pci_device_is_present(pdev))
7403 return -ENODEV;
Alexander Duyckaed5dec2009-02-06 23:16:04 +00007404 err = pci_enable_device_mem(pdev);
Auke Kok9d5c8242008-01-24 02:22:38 -08007405 if (err) {
7406 dev_err(&pdev->dev,
7407 "igb: Cannot enable PCI device from suspend\n");
7408 return err;
7409 }
7410 pci_set_master(pdev);
7411
7412 pci_enable_wake(pdev, PCI_D3hot, 0);
7413 pci_enable_wake(pdev, PCI_D3cold, 0);
7414
Stefan Assmann53c7d062012-12-04 06:00:12 +00007415 if (igb_init_interrupt_scheme(adapter, true)) {
Alexander Duycka88f10e2008-07-08 15:13:38 -07007416 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
Jia-Ju Bai3eb14ea2015-08-03 11:36:26 +08007417 rtnl_unlock();
Alexander Duycka88f10e2008-07-08 15:13:38 -07007418 return -ENOMEM;
Auke Kok9d5c8242008-01-24 02:22:38 -08007419 }
7420
Auke Kok9d5c8242008-01-24 02:22:38 -08007421 igb_reset(adapter);
Alexander Duycka8564f02009-02-06 23:21:10 +00007422
7423 /* let the f/w know that the h/w is now under the control of the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007424 * driver.
7425 */
Alexander Duycka8564f02009-02-06 23:21:10 +00007426 igb_get_hw_control(adapter);
7427
Auke Kok9d5c8242008-01-24 02:22:38 -08007428 wr32(E1000_WUS, ~0);
7429
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007430 if (netdev->flags & IFF_UP) {
Alexander Duyck0c2cc022012-09-25 00:31:22 +00007431 rtnl_lock();
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007432 err = __igb_open(netdev, true);
Alexander Duyck0c2cc022012-09-25 00:31:22 +00007433 rtnl_unlock();
Alexander Duycka88f10e2008-07-08 15:13:38 -07007434 if (err)
7435 return err;
7436 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007437
7438 netif_device_attach(netdev);
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007439 return 0;
7440}
7441
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007442static int igb_runtime_idle(struct device *dev)
7443{
7444 struct pci_dev *pdev = to_pci_dev(dev);
7445 struct net_device *netdev = pci_get_drvdata(pdev);
7446 struct igb_adapter *adapter = netdev_priv(netdev);
7447
7448 if (!igb_has_link(adapter))
7449 pm_schedule_suspend(dev, MSEC_PER_SEC * 5);
7450
7451 return -EBUSY;
7452}
7453
7454static int igb_runtime_suspend(struct device *dev)
7455{
7456 struct pci_dev *pdev = to_pci_dev(dev);
7457 int retval;
7458 bool wake;
7459
7460 retval = __igb_shutdown(pdev, &wake, 1);
7461 if (retval)
7462 return retval;
7463
7464 if (wake) {
7465 pci_prepare_to_sleep(pdev);
7466 } else {
7467 pci_wake_from_d3(pdev, false);
7468 pci_set_power_state(pdev, PCI_D3hot);
7469 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007470
Auke Kok9d5c8242008-01-24 02:22:38 -08007471 return 0;
7472}
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007473
7474static int igb_runtime_resume(struct device *dev)
7475{
7476 return igb_resume(dev);
7477}
Rafael J. Wysockid61c81c2014-12-05 03:06:53 +01007478#endif /* CONFIG_PM */
Auke Kok9d5c8242008-01-24 02:22:38 -08007479
7480static void igb_shutdown(struct pci_dev *pdev)
7481{
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007482 bool wake;
7483
Yan, Zheng749ab2c2012-01-04 20:23:37 +00007484 __igb_shutdown(pdev, &wake, 0);
Rafael J. Wysocki3fe7c4c2009-03-31 21:23:50 +00007485
7486 if (system_state == SYSTEM_POWER_OFF) {
7487 pci_wake_from_d3(pdev, wake);
7488 pci_set_power_state(pdev, PCI_D3hot);
7489 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007490}
7491
Greg Rosefa44f2f2013-01-17 01:03:06 -08007492#ifdef CONFIG_PCI_IOV
7493static int igb_sriov_reinit(struct pci_dev *dev)
7494{
7495 struct net_device *netdev = pci_get_drvdata(dev);
7496 struct igb_adapter *adapter = netdev_priv(netdev);
7497 struct pci_dev *pdev = adapter->pdev;
7498
7499 rtnl_lock();
7500
7501 if (netif_running(netdev))
7502 igb_close(netdev);
Stefan Assmann76252722014-07-10 03:29:39 -07007503 else
7504 igb_reset(adapter);
Greg Rosefa44f2f2013-01-17 01:03:06 -08007505
7506 igb_clear_interrupt_scheme(adapter);
7507
7508 igb_init_queue_configuration(adapter);
7509
7510 if (igb_init_interrupt_scheme(adapter, true)) {
Vasily Averinf468adc2015-07-07 18:53:45 +03007511 rtnl_unlock();
Greg Rosefa44f2f2013-01-17 01:03:06 -08007512 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
7513 return -ENOMEM;
7514 }
7515
7516 if (netif_running(netdev))
7517 igb_open(netdev);
7518
7519 rtnl_unlock();
7520
7521 return 0;
7522}
7523
7524static int igb_pci_disable_sriov(struct pci_dev *dev)
7525{
7526 int err = igb_disable_sriov(dev);
7527
7528 if (!err)
7529 err = igb_sriov_reinit(dev);
7530
7531 return err;
7532}
7533
7534static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs)
7535{
7536 int err = igb_enable_sriov(dev, num_vfs);
7537
7538 if (err)
7539 goto out;
7540
7541 err = igb_sriov_reinit(dev);
7542 if (!err)
7543 return num_vfs;
7544
7545out:
7546 return err;
7547}
7548
7549#endif
7550static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
7551{
7552#ifdef CONFIG_PCI_IOV
7553 if (num_vfs == 0)
7554 return igb_pci_disable_sriov(dev);
7555 else
7556 return igb_pci_enable_sriov(dev, num_vfs);
7557#endif
7558 return 0;
7559}
7560
Auke Kok9d5c8242008-01-24 02:22:38 -08007561#ifdef CONFIG_NET_POLL_CONTROLLER
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007562/* Polling 'interrupt' - used by things like netconsole to send skbs
Auke Kok9d5c8242008-01-24 02:22:38 -08007563 * without having to re-enable interrupts. It's not called while
7564 * the interrupt routine is executing.
7565 */
7566static void igb_netpoll(struct net_device *netdev)
7567{
7568 struct igb_adapter *adapter = netdev_priv(netdev);
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00007569 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007570 struct igb_q_vector *q_vector;
Auke Kok9d5c8242008-01-24 02:22:38 -08007571 int i;
Auke Kok9d5c8242008-01-24 02:22:38 -08007572
Alexander Duyck047e0032009-10-27 15:49:27 +00007573 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007574 q_vector = adapter->q_vector[i];
Carolyn Wybornycd14ef52013-12-10 07:58:34 +00007575 if (adapter->flags & IGB_FLAG_HAS_MSIX)
Alexander Duyck0d1ae7f2011-08-26 07:46:34 +00007576 wr32(E1000_EIMC, q_vector->eims_value);
7577 else
7578 igb_irq_disable(adapter);
Alexander Duyck047e0032009-10-27 15:49:27 +00007579 napi_schedule(&q_vector->napi);
Alexander Duyckeebbbdb2009-02-06 23:19:29 +00007580 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007581}
7582#endif /* CONFIG_NET_POLL_CONTROLLER */
7583
7584/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007585 * igb_io_error_detected - called when PCI error is detected
7586 * @pdev: Pointer to PCI device
7587 * @state: The current pci connection state
Auke Kok9d5c8242008-01-24 02:22:38 -08007588 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007589 * This function is called after a PCI bus error affecting
7590 * this device has been detected.
7591 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08007592static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
7593 pci_channel_state_t state)
7594{
7595 struct net_device *netdev = pci_get_drvdata(pdev);
7596 struct igb_adapter *adapter = netdev_priv(netdev);
7597
7598 netif_device_detach(netdev);
7599
Alexander Duyck59ed6ee2009-06-30 12:46:34 +00007600 if (state == pci_channel_io_perm_failure)
7601 return PCI_ERS_RESULT_DISCONNECT;
7602
Auke Kok9d5c8242008-01-24 02:22:38 -08007603 if (netif_running(netdev))
7604 igb_down(adapter);
7605 pci_disable_device(pdev);
7606
7607 /* Request a slot slot reset. */
7608 return PCI_ERS_RESULT_NEED_RESET;
7609}
7610
7611/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007612 * igb_io_slot_reset - called after the pci bus has been reset.
7613 * @pdev: Pointer to PCI device
Auke Kok9d5c8242008-01-24 02:22:38 -08007614 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007615 * Restart the card from scratch, as if from a cold-boot. Implementation
7616 * resembles the first-half of the igb_resume routine.
7617 **/
Auke Kok9d5c8242008-01-24 02:22:38 -08007618static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
7619{
7620 struct net_device *netdev = pci_get_drvdata(pdev);
7621 struct igb_adapter *adapter = netdev_priv(netdev);
7622 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck40a914f2008-11-27 00:24:37 -08007623 pci_ers_result_t result;
Taku Izumi42bfd33a2008-06-20 12:10:30 +09007624 int err;
Auke Kok9d5c8242008-01-24 02:22:38 -08007625
Alexander Duyckaed5dec2009-02-06 23:16:04 +00007626 if (pci_enable_device_mem(pdev)) {
Auke Kok9d5c8242008-01-24 02:22:38 -08007627 dev_err(&pdev->dev,
7628 "Cannot re-enable PCI device after reset.\n");
Alexander Duyck40a914f2008-11-27 00:24:37 -08007629 result = PCI_ERS_RESULT_DISCONNECT;
7630 } else {
7631 pci_set_master(pdev);
7632 pci_restore_state(pdev);
Nick Nunleyb94f2d72010-02-17 01:02:19 +00007633 pci_save_state(pdev);
Alexander Duyck40a914f2008-11-27 00:24:37 -08007634
7635 pci_enable_wake(pdev, PCI_D3hot, 0);
7636 pci_enable_wake(pdev, PCI_D3cold, 0);
7637
7638 igb_reset(adapter);
7639 wr32(E1000_WUS, ~0);
7640 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9d5c8242008-01-24 02:22:38 -08007641 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007642
Jeff Kirsherea943d42008-12-11 20:34:19 -08007643 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7644 if (err) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007645 dev_err(&pdev->dev,
7646 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7647 err);
Jeff Kirsherea943d42008-12-11 20:34:19 -08007648 /* non-fatal, continue */
7649 }
Auke Kok9d5c8242008-01-24 02:22:38 -08007650
Alexander Duyck40a914f2008-11-27 00:24:37 -08007651 return result;
Auke Kok9d5c8242008-01-24 02:22:38 -08007652}
7653
7654/**
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007655 * igb_io_resume - called when traffic can start flowing again.
7656 * @pdev: Pointer to PCI device
Auke Kok9d5c8242008-01-24 02:22:38 -08007657 *
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007658 * This callback is called when the error recovery driver tells us that
7659 * its OK to resume normal operation. Implementation resembles the
7660 * second-half of the igb_resume routine.
Auke Kok9d5c8242008-01-24 02:22:38 -08007661 */
7662static void igb_io_resume(struct pci_dev *pdev)
7663{
7664 struct net_device *netdev = pci_get_drvdata(pdev);
7665 struct igb_adapter *adapter = netdev_priv(netdev);
7666
Auke Kok9d5c8242008-01-24 02:22:38 -08007667 if (netif_running(netdev)) {
7668 if (igb_up(adapter)) {
7669 dev_err(&pdev->dev, "igb_up failed after reset\n");
7670 return;
7671 }
7672 }
7673
7674 netif_device_attach(netdev);
7675
7676 /* let the f/w know that the h/w is now under the control of the
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007677 * driver.
7678 */
Auke Kok9d5c8242008-01-24 02:22:38 -08007679 igb_get_hw_control(adapter);
Auke Kok9d5c8242008-01-24 02:22:38 -08007680}
7681
Alexander Duyck26ad9172009-10-05 06:32:49 +00007682static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007683 u8 qsel)
Alexander Duyck26ad9172009-10-05 06:32:49 +00007684{
7685 u32 rar_low, rar_high;
7686 struct e1000_hw *hw = &adapter->hw;
7687
7688 /* HW expects these in little endian so we reverse the byte order
7689 * from network order (big endian) to little endian
7690 */
7691 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007692 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
Alexander Duyck26ad9172009-10-05 06:32:49 +00007693 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
7694
7695 /* Indicate to hardware the Address is Valid. */
7696 rar_high |= E1000_RAH_AV;
7697
7698 if (hw->mac.type == e1000_82575)
7699 rar_high |= E1000_RAH_POOL_1 * qsel;
7700 else
7701 rar_high |= E1000_RAH_POOL_1 << qsel;
7702
7703 wr32(E1000_RAL(index), rar_low);
7704 wrfl();
7705 wr32(E1000_RAH(index), rar_high);
7706 wrfl();
7707}
7708
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007709static int igb_set_vf_mac(struct igb_adapter *adapter,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007710 int vf, unsigned char *mac_addr)
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007711{
7712 struct e1000_hw *hw = &adapter->hw;
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007713 /* VF MAC addresses start at end of receive addresses and moves
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007714 * towards the first, as a result a collision should not be possible
7715 */
Alexander Duyckff41f8d2009-09-03 14:48:56 +00007716 int rar_entry = hw->mac.rar_entry_count - (vf + 1);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007717
Alexander Duyck37680112009-02-19 20:40:30 -08007718 memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007719
Alexander Duyck26ad9172009-10-05 06:32:49 +00007720 igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf);
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007721
7722 return 0;
7723}
7724
Williams, Mitch A8151d292010-02-10 01:44:24 +00007725static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
7726{
7727 struct igb_adapter *adapter = netdev_priv(netdev);
7728 if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count))
7729 return -EINVAL;
7730 adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC;
7731 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007732 dev_info(&adapter->pdev->dev,
7733 "Reload the VF driver to make this change effective.");
Williams, Mitch A8151d292010-02-10 01:44:24 +00007734 if (test_bit(__IGB_DOWN, &adapter->state)) {
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007735 dev_warn(&adapter->pdev->dev,
7736 "The VF MAC address has been set, but the PF device is not up.\n");
7737 dev_warn(&adapter->pdev->dev,
7738 "Bring the PF device up before attempting to use the VF device.\n");
Williams, Mitch A8151d292010-02-10 01:44:24 +00007739 }
7740 return igb_set_vf_mac(adapter, vf, mac);
7741}
7742
Lior Levy17dc5662011-02-08 02:28:46 +00007743static int igb_link_mbps(int internal_link_speed)
7744{
7745 switch (internal_link_speed) {
7746 case SPEED_100:
7747 return 100;
7748 case SPEED_1000:
7749 return 1000;
7750 default:
7751 return 0;
7752 }
7753}
7754
7755static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate,
7756 int link_speed)
7757{
7758 int rf_dec, rf_int;
7759 u32 bcnrc_val;
7760
7761 if (tx_rate != 0) {
7762 /* Calculate the rate factor values to set */
7763 rf_int = link_speed / tx_rate;
7764 rf_dec = (link_speed - (rf_int * tx_rate));
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007765 rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) /
7766 tx_rate;
Lior Levy17dc5662011-02-08 02:28:46 +00007767
7768 bcnrc_val = E1000_RTTBCNRC_RS_ENA;
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007769 bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) &
7770 E1000_RTTBCNRC_RF_INT_MASK);
Lior Levy17dc5662011-02-08 02:28:46 +00007771 bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK);
7772 } else {
7773 bcnrc_val = 0;
7774 }
7775
7776 wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007777 /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
Lior Levyf00b0da2011-06-04 06:05:03 +00007778 * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported.
7779 */
7780 wr32(E1000_RTTBCNRM, 0x14);
Lior Levy17dc5662011-02-08 02:28:46 +00007781 wr32(E1000_RTTBCNRC, bcnrc_val);
7782}
7783
7784static void igb_check_vf_rate_limit(struct igb_adapter *adapter)
7785{
7786 int actual_link_speed, i;
7787 bool reset_rate = false;
7788
7789 /* VF TX rate limit was not set or not supported */
7790 if ((adapter->vf_rate_link_speed == 0) ||
7791 (adapter->hw.mac.type != e1000_82576))
7792 return;
7793
7794 actual_link_speed = igb_link_mbps(adapter->link_speed);
7795 if (actual_link_speed != adapter->vf_rate_link_speed) {
7796 reset_rate = true;
7797 adapter->vf_rate_link_speed = 0;
7798 dev_info(&adapter->pdev->dev,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007799 "Link speed has been changed. VF Transmit rate is disabled\n");
Lior Levy17dc5662011-02-08 02:28:46 +00007800 }
7801
7802 for (i = 0; i < adapter->vfs_allocated_count; i++) {
7803 if (reset_rate)
7804 adapter->vf_data[i].tx_rate = 0;
7805
7806 igb_set_vf_rate_limit(&adapter->hw, i,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007807 adapter->vf_data[i].tx_rate,
7808 actual_link_speed);
Lior Levy17dc5662011-02-08 02:28:46 +00007809 }
7810}
7811
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04007812static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf,
7813 int min_tx_rate, int max_tx_rate)
Williams, Mitch A8151d292010-02-10 01:44:24 +00007814{
Lior Levy17dc5662011-02-08 02:28:46 +00007815 struct igb_adapter *adapter = netdev_priv(netdev);
7816 struct e1000_hw *hw = &adapter->hw;
7817 int actual_link_speed;
7818
7819 if (hw->mac.type != e1000_82576)
7820 return -EOPNOTSUPP;
7821
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04007822 if (min_tx_rate)
7823 return -EINVAL;
7824
Lior Levy17dc5662011-02-08 02:28:46 +00007825 actual_link_speed = igb_link_mbps(adapter->link_speed);
7826 if ((vf >= adapter->vfs_allocated_count) ||
7827 (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) ||
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04007828 (max_tx_rate < 0) ||
7829 (max_tx_rate > actual_link_speed))
Lior Levy17dc5662011-02-08 02:28:46 +00007830 return -EINVAL;
7831
7832 adapter->vf_rate_link_speed = actual_link_speed;
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04007833 adapter->vf_data[vf].tx_rate = (u16)max_tx_rate;
7834 igb_set_vf_rate_limit(hw, vf, max_tx_rate, actual_link_speed);
Lior Levy17dc5662011-02-08 02:28:46 +00007835
7836 return 0;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007837}
7838
Lior Levy70ea4782013-03-03 20:27:48 +00007839static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
7840 bool setting)
7841{
7842 struct igb_adapter *adapter = netdev_priv(netdev);
7843 struct e1000_hw *hw = &adapter->hw;
7844 u32 reg_val, reg_offset;
7845
7846 if (!adapter->vfs_allocated_count)
7847 return -EOPNOTSUPP;
7848
7849 if (vf >= adapter->vfs_allocated_count)
7850 return -EINVAL;
7851
7852 reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC;
7853 reg_val = rd32(reg_offset);
7854 if (setting)
7855 reg_val |= ((1 << vf) |
7856 (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
7857 else
7858 reg_val &= ~((1 << vf) |
7859 (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
7860 wr32(reg_offset, reg_val);
7861
7862 adapter->vf_data[vf].spoofchk_enabled = setting;
Todd Fujinaka23d87822014-06-04 07:12:15 +00007863 return 0;
Lior Levy70ea4782013-03-03 20:27:48 +00007864}
7865
Williams, Mitch A8151d292010-02-10 01:44:24 +00007866static int igb_ndo_get_vf_config(struct net_device *netdev,
7867 int vf, struct ifla_vf_info *ivi)
7868{
7869 struct igb_adapter *adapter = netdev_priv(netdev);
7870 if (vf >= adapter->vfs_allocated_count)
7871 return -EINVAL;
7872 ivi->vf = vf;
7873 memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN);
Sucheta Chakrabortyed616682014-05-22 09:59:05 -04007874 ivi->max_tx_rate = adapter->vf_data[vf].tx_rate;
7875 ivi->min_tx_rate = 0;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007876 ivi->vlan = adapter->vf_data[vf].pf_vlan;
7877 ivi->qos = adapter->vf_data[vf].pf_qos;
Lior Levy70ea4782013-03-03 20:27:48 +00007878 ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled;
Williams, Mitch A8151d292010-02-10 01:44:24 +00007879 return 0;
7880}
7881
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007882static void igb_vmm_control(struct igb_adapter *adapter)
7883{
7884 struct e1000_hw *hw = &adapter->hw;
Alexander Duyck10d8e902009-10-27 15:54:04 +00007885 u32 reg;
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007886
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007887 switch (hw->mac.type) {
7888 case e1000_82575:
Carolyn Wybornyf96a8a02012-04-06 23:25:19 +00007889 case e1000_i210:
7890 case e1000_i211:
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00007891 case e1000_i354:
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007892 default:
7893 /* replication is not supported for 82575 */
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007894 return;
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007895 case e1000_82576:
7896 /* notify HW that the MAC is adding vlan tags */
7897 reg = rd32(E1000_DTXCTL);
7898 reg |= E1000_DTXCTL_VLAN_ADDED;
7899 wr32(E1000_DTXCTL, reg);
Carolyn Wybornyb26141d2014-04-17 04:10:13 +00007900 /* Fall through */
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007901 case e1000_82580:
7902 /* enable replication vlan tag stripping */
7903 reg = rd32(E1000_RPLOLR);
7904 reg |= E1000_RPLOLR_STRVLAN;
7905 wr32(E1000_RPLOLR, reg);
Carolyn Wybornyb26141d2014-04-17 04:10:13 +00007906 /* Fall through */
Alexander Duyckd2ba2ed2010-03-22 14:08:06 +00007907 case e1000_i350:
7908 /* none of the above registers are supported by i350 */
Alexander Duyck52a1dd42010-03-22 14:07:46 +00007909 break;
7910 }
Alexander Duyck10d8e902009-10-27 15:54:04 +00007911
Alexander Duyckd4960302009-10-27 15:53:45 +00007912 if (adapter->vfs_allocated_count) {
7913 igb_vmdq_set_loopback_pf(hw, true);
7914 igb_vmdq_set_replication_pf(hw, true);
Greg Rose13800462010-11-06 02:08:26 +00007915 igb_vmdq_set_anti_spoofing_pf(hw, true,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007916 adapter->vfs_allocated_count);
Alexander Duyckd4960302009-10-27 15:53:45 +00007917 } else {
7918 igb_vmdq_set_loopback_pf(hw, false);
7919 igb_vmdq_set_replication_pf(hw, false);
7920 }
Alexander Duyck4ae196d2009-02-19 20:40:07 -08007921}
7922
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007923static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
7924{
7925 struct e1000_hw *hw = &adapter->hw;
7926 u32 dmac_thr;
7927 u16 hwm;
7928
7929 if (hw->mac.type > e1000_82580) {
7930 if (adapter->flags & IGB_FLAG_DMAC) {
7931 u32 reg;
7932
7933 /* force threshold to 0. */
7934 wr32(E1000_DMCTXTH, 0);
7935
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007936 /* DMA Coalescing high water mark needs to be greater
Matthew Vicke8c626e2011-11-17 08:33:12 +00007937 * than the Rx threshold. Set hwm to PBA - max frame
7938 * size in 16B units, capping it at PBA - 6KB.
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007939 */
Matthew Vicke8c626e2011-11-17 08:33:12 +00007940 hwm = 64 * pba - adapter->max_frame_size / 16;
7941 if (hwm < 64 * (pba - 6))
7942 hwm = 64 * (pba - 6);
7943 reg = rd32(E1000_FCRTC);
7944 reg &= ~E1000_FCRTC_RTH_COAL_MASK;
7945 reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT)
7946 & E1000_FCRTC_RTH_COAL_MASK);
7947 wr32(E1000_FCRTC, reg);
7948
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007949 /* Set the DMA Coalescing Rx threshold to PBA - 2 * max
Matthew Vicke8c626e2011-11-17 08:33:12 +00007950 * frame size, capping it at PBA - 10KB.
7951 */
7952 dmac_thr = pba - adapter->max_frame_size / 512;
7953 if (dmac_thr < pba - 10)
7954 dmac_thr = pba - 10;
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007955 reg = rd32(E1000_DMACR);
7956 reg &= ~E1000_DMACR_DMACTHR_MASK;
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007957 reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT)
7958 & E1000_DMACR_DMACTHR_MASK);
7959
7960 /* transition to L0x or L1 if available..*/
7961 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
7962
7963 /* watchdog timer= +-1000 usec in 32usec intervals */
7964 reg |= (1000 >> 5);
Matthew Vick0c02dd92012-04-14 05:20:32 +00007965
7966 /* Disable BMC-to-OS Watchdog Enable */
Carolyn Wybornyceb5f132013-04-18 22:21:30 +00007967 if (hw->mac.type != e1000_i354)
7968 reg &= ~E1000_DMACR_DC_BMC2OSW_EN;
7969
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007970 wr32(E1000_DMACR, reg);
7971
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007972 /* no lower threshold to disable
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007973 * coalescing(smart fifb)-UTRESH=0
7974 */
7975 wr32(E1000_DMCRTRH, 0);
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007976
7977 reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4);
7978
7979 wr32(E1000_DMCTLX, reg);
7980
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007981 /* free space in tx packet buffer to wake from
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007982 * DMA coal
7983 */
7984 wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE -
7985 (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6);
7986
Jeff Kirsherb980ac12013-02-23 07:29:56 +00007987 /* make low power state decision controlled
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007988 * by DMA coal
7989 */
7990 reg = rd32(E1000_PCIEMISC);
7991 reg &= ~E1000_PCIEMISC_LX_DECISION;
7992 wr32(E1000_PCIEMISC, reg);
7993 } /* endif adapter->dmac is not disabled */
7994 } else if (hw->mac.type == e1000_82580) {
7995 u32 reg = rd32(E1000_PCIEMISC);
Carolyn Wyborny9005df32014-04-11 01:45:34 +00007996
Carolyn Wybornyb6e0c412011-10-13 17:29:59 +00007997 wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION);
7998 wr32(E1000_DMACR, 0);
7999 }
8000}
8001
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008002/**
8003 * igb_read_i2c_byte - Reads 8 bit word over I2C
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008004 * @hw: pointer to hardware structure
8005 * @byte_offset: byte offset to read
8006 * @dev_addr: device address
8007 * @data: value read
8008 *
8009 * Performs byte read operation over I2C interface at
8010 * a specified device address.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008011 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008012s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008013 u8 dev_addr, u8 *data)
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008014{
8015 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
Carolyn Wyborny603e86f2013-02-20 07:40:55 +00008016 struct i2c_client *this_client = adapter->i2c_client;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008017 s32 status;
8018 u16 swfw_mask = 0;
8019
8020 if (!this_client)
8021 return E1000_ERR_I2C;
8022
8023 swfw_mask = E1000_SWFW_PHY0_SM;
8024
Todd Fujinaka23d87822014-06-04 07:12:15 +00008025 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008026 return E1000_ERR_SWFW_SYNC;
8027
8028 status = i2c_smbus_read_byte_data(this_client, byte_offset);
8029 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
8030
8031 if (status < 0)
8032 return E1000_ERR_I2C;
8033 else {
8034 *data = status;
Todd Fujinaka23d87822014-06-04 07:12:15 +00008035 return 0;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008036 }
8037}
8038
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008039/**
8040 * igb_write_i2c_byte - Writes 8 bit word over I2C
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008041 * @hw: pointer to hardware structure
8042 * @byte_offset: byte offset to write
8043 * @dev_addr: device address
8044 * @data: value to write
8045 *
8046 * Performs byte write operation over I2C interface at
8047 * a specified device address.
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008048 **/
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008049s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
Jeff Kirsherb980ac12013-02-23 07:29:56 +00008050 u8 dev_addr, u8 data)
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008051{
8052 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
Carolyn Wyborny603e86f2013-02-20 07:40:55 +00008053 struct i2c_client *this_client = adapter->i2c_client;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008054 s32 status;
8055 u16 swfw_mask = E1000_SWFW_PHY0_SM;
8056
8057 if (!this_client)
8058 return E1000_ERR_I2C;
8059
Todd Fujinaka23d87822014-06-04 07:12:15 +00008060 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008061 return E1000_ERR_SWFW_SYNC;
8062 status = i2c_smbus_write_byte_data(this_client, byte_offset, data);
8063 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
8064
8065 if (status)
8066 return E1000_ERR_I2C;
8067 else
Todd Fujinaka23d87822014-06-04 07:12:15 +00008068 return 0;
Carolyn Wyborny441fc6f2012-12-07 03:00:30 +00008069
8070}
Laura Mihaela Vasilescu907b7832013-10-01 04:33:56 -07008071
8072int igb_reinit_queues(struct igb_adapter *adapter)
8073{
8074 struct net_device *netdev = adapter->netdev;
8075 struct pci_dev *pdev = adapter->pdev;
8076 int err = 0;
8077
8078 if (netif_running(netdev))
8079 igb_close(netdev);
8080
Carolyn Wyborny02ef6e12013-12-10 07:58:29 +00008081 igb_reset_interrupt_capability(adapter);
Laura Mihaela Vasilescu907b7832013-10-01 04:33:56 -07008082
8083 if (igb_init_interrupt_scheme(adapter, true)) {
8084 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
8085 return -ENOMEM;
8086 }
8087
8088 if (netif_running(netdev))
8089 err = igb_open(netdev);
8090
8091 return err;
8092}
Auke Kok9d5c8242008-01-24 02:22:38 -08008093/* igb_main.c */