blob: 5258b3d6405b3c4b72044000067c2a30a1f8414c [file] [log] [blame]
Auke Kok9a799d72007-09-15 14:07:45 -07001/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
Shannon Nelson8c47eaa2010-01-13 01:49:34 +00004 Copyright(c) 1999 - 2010 Intel Corporation.
Auke Kok9a799d72007-09-15 14:07:45 -07005
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
Auke Kok9a799d72007-09-15 14:07:45 -070023 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28#include <linux/types.h>
29#include <linux/module.h>
30#include <linux/pci.h>
31#include <linux/netdevice.h>
32#include <linux/vmalloc.h>
33#include <linux/string.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/tcp.h>
Lucy Liu60127862009-07-22 14:07:33 +000037#include <linux/pkt_sched.h>
Auke Kok9a799d72007-09-15 14:07:45 -070038#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090039#include <linux/slab.h>
Auke Kok9a799d72007-09-15 14:07:45 -070040#include <net/checksum.h>
41#include <net/ip6_checksum.h>
42#include <linux/ethtool.h>
43#include <linux/if_vlan.h>
Yi Zoueacd73f2009-05-13 13:11:06 +000044#include <scsi/fc/fc_fcoe.h>
Auke Kok9a799d72007-09-15 14:07:45 -070045
46#include "ixgbe.h"
47#include "ixgbe_common.h"
Don Skidmoreee5f784a2009-11-06 12:56:20 +000048#include "ixgbe_dcb_82599.h"
Greg Rose1cdd1ec2010-01-09 02:26:46 +000049#include "ixgbe_sriov.h"
Auke Kok9a799d72007-09-15 14:07:45 -070050
51char ixgbe_driver_name[] = "ixgbe";
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070052static const char ixgbe_driver_string[] =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070053 "Intel(R) 10 Gigabit PCI Express Network Driver";
Auke Kok9a799d72007-09-15 14:07:45 -070054
Peter Waskiewicz92eb8792010-02-10 16:08:13 +000055#define DRV_VERSION "2.0.62-k2"
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070056const char ixgbe_driver_version[] = DRV_VERSION;
Shannon Nelson8c47eaa2010-01-13 01:49:34 +000057static char ixgbe_copyright[] = "Copyright (c) 1999-2010 Intel Corporation.";
Auke Kok9a799d72007-09-15 14:07:45 -070058
59static const struct ixgbe_info *ixgbe_info_tbl[] = {
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070060 [board_82598] = &ixgbe_82598_info,
PJ Waskiewicze8e26352009-02-27 15:45:05 +000061 [board_82599] = &ixgbe_82599_info,
Auke Kok9a799d72007-09-15 14:07:45 -070062};
63
64/* ixgbe_pci_tbl - PCI Device ID Table
65 *
66 * Wildcard entries (PCI_ANY_ID) should come last
67 * Last entry must be all 0s
68 *
69 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
70 * Class, Class Mask, private data (not used) }
71 */
Alexey Dobriyana3aa1882010-01-07 11:58:11 +000072static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
Don Skidmore1e336d02009-01-26 20:57:51 -080073 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
74 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070075 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070076 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070077 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070078 board_82598 },
Jesse Brandeburg0befdb32008-10-31 00:46:40 -070079 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
80 board_82598 },
Peter P Waskiewicz Jr3845bec2009-07-16 15:50:52 +000081 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
82 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070083 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
Auke Kok3957d632007-10-31 15:22:10 -070084 board_82598 },
Jesse Brandeburg8d792cd2008-08-08 16:24:19 -070085 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
86 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080087 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
88 board_82598 },
89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
90 board_82598 },
Jesse Brandeburgb95f5fc2008-09-11 19:58:59 -070091 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
92 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080093 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
94 board_82598 },
Don Skidmore2f21bdd2009-02-01 01:18:23 -080095 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
96 board_82598 },
PJ Waskiewicze8e26352009-02-27 15:45:05 +000097 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
98 board_82599 },
Peter P Waskiewicz Jr1fcf03e2009-05-17 20:58:04 +000099 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
100 board_82599 },
Don Skidmore74757d42009-12-08 07:22:23 +0000101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
102 board_82599 },
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
104 board_82599 },
Don Skidmore38ad1c82009-10-08 15:35:58 +0000105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
106 board_82599 },
Don Skidmoredbfec662009-10-02 08:58:25 +0000107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
108 board_82599 },
Peter P Waskiewicz Jr89111842009-09-14 07:47:49 +0000109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
110 board_82599 },
Don Skidmore312eb932009-10-02 08:58:04 +0000111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
112 board_82599 },
Auke Kok9a799d72007-09-15 14:07:45 -0700113
114 /* required last entry */
115 {0, }
116};
117MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
118
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400119#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800120static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700121 void *p);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800122static struct notifier_block dca_notifier = {
123 .notifier_call = ixgbe_notify_dca,
124 .next = NULL,
125 .priority = 0
126};
127#endif
128
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000129#ifdef CONFIG_PCI_IOV
130static unsigned int max_vfs;
131module_param(max_vfs, uint, 0);
132MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate "
133 "per physical function");
134#endif /* CONFIG_PCI_IOV */
135
Auke Kok9a799d72007-09-15 14:07:45 -0700136MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
137MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
138MODULE_LICENSE("GPL");
139MODULE_VERSION(DRV_VERSION);
140
141#define DEFAULT_DEBUG_LEVEL_SHIFT 3
142
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000143static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
144{
145 struct ixgbe_hw *hw = &adapter->hw;
146 u32 gcr;
147 u32 gpie;
148 u32 vmdctl;
149
150#ifdef CONFIG_PCI_IOV
151 /* disable iov and allow time for transactions to clear */
152 pci_disable_sriov(adapter->pdev);
153#endif
154
155 /* turn off device IOV mode */
156 gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
157 gcr &= ~(IXGBE_GCR_EXT_SRIOV);
158 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr);
159 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
160 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
161 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
162
163 /* set default pool back to 0 */
164 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
165 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
166 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
167
168 /* take a breather then clean up driver data */
169 msleep(100);
170 if (adapter->vfinfo)
171 kfree(adapter->vfinfo);
172 adapter->vfinfo = NULL;
173
174 adapter->num_vfs = 0;
175 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
176}
177
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800178static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
179{
180 u32 ctrl_ext;
181
182 /* Let firmware take over control of h/w */
183 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
184 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700185 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800186}
187
188static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
189{
190 u32 ctrl_ext;
191
192 /* Let firmware know the driver has taken over */
193 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
194 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700195 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800196}
Auke Kok9a799d72007-09-15 14:07:45 -0700197
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000198/*
199 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
200 * @adapter: pointer to adapter struct
201 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
202 * @queue: queue to map the corresponding interrupt to
203 * @msix_vector: the vector to map to the corresponding queue
204 *
205 */
206static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
207 u8 queue, u8 msix_vector)
Auke Kok9a799d72007-09-15 14:07:45 -0700208{
209 u32 ivar, index;
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000210 struct ixgbe_hw *hw = &adapter->hw;
211 switch (hw->mac.type) {
212 case ixgbe_mac_82598EB:
213 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
214 if (direction == -1)
215 direction = 0;
216 index = (((direction * 64) + queue) >> 2) & 0x1F;
217 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
218 ivar &= ~(0xFF << (8 * (queue & 0x3)));
219 ivar |= (msix_vector << (8 * (queue & 0x3)));
220 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
221 break;
222 case ixgbe_mac_82599EB:
223 if (direction == -1) {
224 /* other causes */
225 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
226 index = ((queue & 1) * 8);
227 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
228 ivar &= ~(0xFF << index);
229 ivar |= (msix_vector << index);
230 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
231 break;
232 } else {
233 /* tx or rx causes */
234 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
235 index = ((16 * (queue & 1)) + (8 * direction));
236 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
237 ivar &= ~(0xFF << index);
238 ivar |= (msix_vector << index);
239 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
240 break;
241 }
242 default:
243 break;
244 }
Auke Kok9a799d72007-09-15 14:07:45 -0700245}
246
Alexander Duyckfe49f042009-06-04 16:00:09 +0000247static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
248 u64 qmask)
249{
250 u32 mask;
251
252 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
253 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
254 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
255 } else {
256 mask = (qmask & 0xFFFFFFFF);
257 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
258 mask = (qmask >> 32);
259 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
260 }
261}
262
Auke Kok9a799d72007-09-15 14:07:45 -0700263static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700264 struct ixgbe_tx_buffer
265 *tx_buffer_info)
Auke Kok9a799d72007-09-15 14:07:45 -0700266{
Alexander Duycke5a43542009-12-02 16:46:56 +0000267 if (tx_buffer_info->dma) {
268 if (tx_buffer_info->mapped_as_page)
269 pci_unmap_page(adapter->pdev,
270 tx_buffer_info->dma,
271 tx_buffer_info->length,
272 PCI_DMA_TODEVICE);
273 else
274 pci_unmap_single(adapter->pdev,
275 tx_buffer_info->dma,
276 tx_buffer_info->length,
277 PCI_DMA_TODEVICE);
278 tx_buffer_info->dma = 0;
279 }
Auke Kok9a799d72007-09-15 14:07:45 -0700280 if (tx_buffer_info->skb) {
281 dev_kfree_skb_any(tx_buffer_info->skb);
282 tx_buffer_info->skb = NULL;
283 }
Alexander Duyck44df32c2009-03-31 21:34:23 +0000284 tx_buffer_info->time_stamp = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700285 /* tx_buffer_info must be completely set up in the transmit path */
286}
287
Yi Zou26f23d82009-11-06 12:56:00 +0000288/**
289 * ixgbe_tx_is_paused - check if the tx ring is paused
290 * @adapter: the ixgbe adapter
291 * @tx_ring: the corresponding tx_ring
292 *
293 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
294 * corresponding TC of this tx_ring when checking TFCS.
295 *
296 * Returns : true if paused
297 */
298static inline bool ixgbe_tx_is_paused(struct ixgbe_adapter *adapter,
299 struct ixgbe_ring *tx_ring)
300{
Yi Zou26f23d82009-11-06 12:56:00 +0000301 u32 txoff = IXGBE_TFCS_TXOFF;
302
303#ifdef CONFIG_IXGBE_DCB
304 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Jaswinder Singh Rajput30b768322009-11-20 04:02:27 +0000305 int tc;
Yi Zou26f23d82009-11-06 12:56:00 +0000306 int reg_idx = tx_ring->reg_idx;
307 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
308
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000309 switch (adapter->hw.mac.type) {
310 case ixgbe_mac_82598EB:
Yi Zou26f23d82009-11-06 12:56:00 +0000311 tc = reg_idx >> 2;
312 txoff = IXGBE_TFCS_TXOFF0;
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000313 break;
314 case ixgbe_mac_82599EB:
Yi Zou26f23d82009-11-06 12:56:00 +0000315 tc = 0;
316 txoff = IXGBE_TFCS_TXOFF;
317 if (dcb_i == 8) {
318 /* TC0, TC1 */
319 tc = reg_idx >> 5;
320 if (tc == 2) /* TC2, TC3 */
321 tc += (reg_idx - 64) >> 4;
322 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
323 tc += 1 + ((reg_idx - 96) >> 3);
324 } else if (dcb_i == 4) {
325 /* TC0, TC1 */
326 tc = reg_idx >> 6;
327 if (tc == 1) {
328 tc += (reg_idx - 64) >> 5;
329 if (tc == 2) /* TC2, TC3 */
330 tc += (reg_idx - 96) >> 4;
331 }
332 }
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000333 break;
334 default:
335 tc = 0;
Yi Zou26f23d82009-11-06 12:56:00 +0000336 }
337 txoff <<= tc;
338 }
339#endif
340 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
341}
342
Auke Kok9a799d72007-09-15 14:07:45 -0700343static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700344 struct ixgbe_ring *tx_ring,
345 unsigned int eop)
Auke Kok9a799d72007-09-15 14:07:45 -0700346{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700347 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700348
Auke Kok9a799d72007-09-15 14:07:45 -0700349 /* Detect a transmit hang in hardware, this serializes the
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700350 * check with the clearing of time_stamp and movement of eop */
Auke Kok9a799d72007-09-15 14:07:45 -0700351 adapter->detect_tx_hung = false;
Alexander Duyck44df32c2009-03-31 21:34:23 +0000352 if (tx_ring->tx_buffer_info[eop].time_stamp &&
Auke Kok9a799d72007-09-15 14:07:45 -0700353 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
Yi Zou26f23d82009-11-06 12:56:00 +0000354 !ixgbe_tx_is_paused(adapter, tx_ring)) {
Auke Kok9a799d72007-09-15 14:07:45 -0700355 /* detected Tx unit hang */
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700356 union ixgbe_adv_tx_desc *tx_desc;
357 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
Auke Kok9a799d72007-09-15 14:07:45 -0700358 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700359 " Tx Queue <%d>\n"
360 " TDH, TDT <%x>, <%x>\n"
Auke Kok9a799d72007-09-15 14:07:45 -0700361 " next_to_use <%x>\n"
362 " next_to_clean <%x>\n"
363 "tx_buffer_info[next_to_clean]\n"
364 " time_stamp <%lx>\n"
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700365 " jiffies <%lx>\n",
366 tx_ring->queue_index,
Alexander Duyck44df32c2009-03-31 21:34:23 +0000367 IXGBE_READ_REG(hw, tx_ring->head),
368 IXGBE_READ_REG(hw, tx_ring->tail),
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700369 tx_ring->next_to_use, eop,
370 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
Auke Kok9a799d72007-09-15 14:07:45 -0700371 return true;
372 }
373
374 return false;
375}
376
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700377#define IXGBE_MAX_TXD_PWR 14
378#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800379
380/* Tx Descriptors needed, worst case */
381#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
382 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
383#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700384 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800385
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700386static void ixgbe_tx_timeout(struct net_device *netdev);
387
Auke Kok9a799d72007-09-15 14:07:45 -0700388/**
389 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
Alexander Duyckfe49f042009-06-04 16:00:09 +0000390 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700391 * @tx_ring: tx ring to clean
Auke Kok9a799d72007-09-15 14:07:45 -0700392 **/
Alexander Duyckfe49f042009-06-04 16:00:09 +0000393static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700394 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -0700395{
Alexander Duyckfe49f042009-06-04 16:00:09 +0000396 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700397 struct net_device *netdev = adapter->netdev;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800398 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
399 struct ixgbe_tx_buffer *tx_buffer_info;
400 unsigned int i, eop, count = 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700401 unsigned int total_bytes = 0, total_packets = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700402
403 i = tx_ring->next_to_clean;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800404 eop = tx_ring->tx_buffer_info[i].next_to_watch;
405 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
406
407 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +0000408 (count < tx_ring->work_limit)) {
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800409 bool cleaned = false;
410 for ( ; !cleaned; count++) {
411 struct sk_buff *skb;
Auke Kok9a799d72007-09-15 14:07:45 -0700412 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
413 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800414 cleaned = (i == eop);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700415 skb = tx_buffer_info->skb;
Auke Kok9a799d72007-09-15 14:07:45 -0700416
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800417 if (cleaned && skb) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800418 unsigned int segs, bytecount;
Yi Zou3d8fd382009-06-08 14:38:44 +0000419 unsigned int hlen = skb_headlen(skb);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700420
421 /* gso_segs is currently only valid for tcp */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800422 segs = skb_shinfo(skb)->gso_segs ?: 1;
Yi Zou3d8fd382009-06-08 14:38:44 +0000423#ifdef IXGBE_FCOE
424 /* adjust for FCoE Sequence Offload */
425 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
426 && (skb->protocol == htons(ETH_P_FCOE)) &&
427 skb_is_gso(skb)) {
428 hlen = skb_transport_offset(skb) +
429 sizeof(struct fc_frame_header) +
430 sizeof(struct fcoe_crc_eof);
431 segs = DIV_ROUND_UP(skb->len - hlen,
432 skb_shinfo(skb)->gso_size);
433 }
434#endif /* IXGBE_FCOE */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800435 /* multiply data chunks by size of headers */
Yi Zou3d8fd382009-06-08 14:38:44 +0000436 bytecount = ((segs - 1) * hlen) + skb->len;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700437 total_packets += segs;
438 total_bytes += bytecount;
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800439 }
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700440
Auke Kok9a799d72007-09-15 14:07:45 -0700441 ixgbe_unmap_and_free_tx_resource(adapter,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700442 tx_buffer_info);
Auke Kok9a799d72007-09-15 14:07:45 -0700443
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800444 tx_desc->wb.status = 0;
445
Auke Kok9a799d72007-09-15 14:07:45 -0700446 i++;
447 if (i == tx_ring->count)
448 i = 0;
449 }
450
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800451 eop = tx_ring->tx_buffer_info[i].next_to_watch;
452 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
453 }
454
Auke Kok9a799d72007-09-15 14:07:45 -0700455 tx_ring->next_to_clean = i;
456
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800457#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700458 if (unlikely(count && netif_carrier_ok(netdev) &&
459 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800460 /* Make sure that anybody stopping the queue after this
461 * sees the new next_to_clean.
462 */
463 smp_mb();
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800464 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
465 !test_bit(__IXGBE_DOWN, &adapter->state)) {
466 netif_wake_subqueue(netdev, tx_ring->queue_index);
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000467 ++tx_ring->restart_queue;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800468 }
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800469 }
Auke Kok9a799d72007-09-15 14:07:45 -0700470
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700471 if (adapter->detect_tx_hung) {
472 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
473 /* schedule immediate reset if we believe we hung */
474 DPRINTK(PROBE, INFO,
475 "tx hang %d detected, resetting adapter\n",
476 adapter->tx_timeout_count + 1);
477 ixgbe_tx_timeout(adapter->netdev);
478 }
479 }
Auke Kok9a799d72007-09-15 14:07:45 -0700480
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700481 /* re-arm the interrupt */
Alexander Duyckfe49f042009-06-04 16:00:09 +0000482 if (count >= tx_ring->work_limit)
483 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
Auke Kok9a799d72007-09-15 14:07:45 -0700484
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700485 tx_ring->total_bytes += total_bytes;
486 tx_ring->total_packets += total_packets;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700487 tx_ring->stats.packets += total_packets;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800488 tx_ring->stats.bytes += total_bytes;
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +0000489 return (count < tx_ring->work_limit);
Auke Kok9a799d72007-09-15 14:07:45 -0700490}
491
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400492#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800493static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700494 struct ixgbe_ring *rx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800495{
496 u32 rxctrl;
497 int cpu = get_cpu();
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000498 int q = rx_ring->reg_idx;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800499
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700500 if (rx_ring->cpu != cpu) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800501 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000502 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
503 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
504 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
505 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
506 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
507 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
508 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
509 }
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800510 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
511 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
Don Skidmore15005a32009-01-19 16:54:13 -0800512 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
513 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000514 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800515 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700516 rx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800517 }
518 put_cpu();
519}
520
521static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700522 struct ixgbe_ring *tx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800523{
524 u32 txctrl;
525 int cpu = get_cpu();
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000526 int q = tx_ring->reg_idx;
Don Skidmoreee5f784a2009-11-06 12:56:20 +0000527 struct ixgbe_hw *hw = &adapter->hw;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800528
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700529 if (tx_ring->cpu != cpu) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000530 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Don Skidmoreee5f784a2009-11-06 12:56:20 +0000531 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000532 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
533 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
Don Skidmoreee5f784a2009-11-06 12:56:20 +0000534 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
535 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000536 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
Don Skidmoreee5f784a2009-11-06 12:56:20 +0000537 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000538 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
539 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
Don Skidmoreee5f784a2009-11-06 12:56:20 +0000540 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
541 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
542 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000543 }
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700544 tx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800545 }
546 put_cpu();
547}
548
549static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
550{
551 int i;
552
553 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
554 return;
555
Alexander Duycke35ec122009-05-21 13:07:12 +0000556 /* always use CB2 mode, difference is masked in the CB driver */
557 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
558
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800559 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000560 adapter->tx_ring[i]->cpu = -1;
561 ixgbe_update_tx_dca(adapter, adapter->tx_ring[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800562 }
563 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000564 adapter->rx_ring[i]->cpu = -1;
565 ixgbe_update_rx_dca(adapter, adapter->rx_ring[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800566 }
567}
568
569static int __ixgbe_notify_dca(struct device *dev, void *data)
570{
571 struct net_device *netdev = dev_get_drvdata(dev);
572 struct ixgbe_adapter *adapter = netdev_priv(netdev);
573 unsigned long event = *(unsigned long *)data;
574
575 switch (event) {
576 case DCA_PROVIDER_ADD:
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700577 /* if we're already enabled, don't do it again */
578 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
579 break;
Denis V. Lunev652f0932008-03-27 14:39:17 +0300580 if (dca_add_requester(dev) == 0) {
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700581 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800582 ixgbe_setup_dca(adapter);
583 break;
584 }
585 /* Fall Through since DCA is disabled. */
586 case DCA_PROVIDER_REMOVE:
587 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
588 dca_remove_requester(dev);
589 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
590 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
591 }
592 break;
593 }
594
Denis V. Lunev652f0932008-03-27 14:39:17 +0300595 return 0;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800596}
597
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400598#endif /* CONFIG_IXGBE_DCA */
Auke Kok9a799d72007-09-15 14:07:45 -0700599/**
600 * ixgbe_receive_skb - Send a completed packet up the stack
601 * @adapter: board private structure
602 * @skb: packet to send up
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700603 * @status: hardware indication of status of receive
604 * @rx_ring: rx descriptor ring (for a specific queue) to setup
605 * @rx_desc: rx descriptor
Auke Kok9a799d72007-09-15 14:07:45 -0700606 **/
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800607static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700608 struct sk_buff *skb, u8 status,
Alexander Duyckfdaff1c2009-05-06 10:43:47 +0000609 struct ixgbe_ring *ring,
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700610 union ixgbe_adv_rx_desc *rx_desc)
Auke Kok9a799d72007-09-15 14:07:45 -0700611{
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800612 struct ixgbe_adapter *adapter = q_vector->adapter;
613 struct napi_struct *napi = &q_vector->napi;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700614 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
615 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
Auke Kok9a799d72007-09-15 14:07:45 -0700616
Alexander Duyckfdaff1c2009-05-06 10:43:47 +0000617 skb_record_rx_queue(skb, ring->queue_index);
Alexander Duyck182ff8d2009-04-27 22:35:33 +0000618 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
Lucy Liu8a62bab2009-08-13 14:09:38 +0000619 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800620 vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700621 else
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800622 napi_gro_receive(napi, skb);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700623 } else {
Lucy Liu8a62bab2009-08-13 14:09:38 +0000624 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
Alexander Duyck182ff8d2009-04-27 22:35:33 +0000625 vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
626 else
627 netif_rx(skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700628 }
629}
630
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800631/**
632 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
633 * @adapter: address of board private structure
634 * @status_err: hardware indication of status of receive
635 * @skb: skb currently being received and modified
636 **/
Auke Kok9a799d72007-09-15 14:07:45 -0700637static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
Don Skidmore8bae1b22009-07-23 18:00:39 +0000638 union ixgbe_adv_rx_desc *rx_desc,
639 struct sk_buff *skb)
Auke Kok9a799d72007-09-15 14:07:45 -0700640{
Don Skidmore8bae1b22009-07-23 18:00:39 +0000641 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
642
Auke Kok9a799d72007-09-15 14:07:45 -0700643 skb->ip_summed = CHECKSUM_NONE;
644
Jesse Brandeburg712744b2008-08-26 04:26:56 -0700645 /* Rx csum disabled */
646 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -0700647 return;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800648
649 /* if IP and error */
650 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
651 (status_err & IXGBE_RXDADV_ERR_IPE)) {
Auke Kok9a799d72007-09-15 14:07:45 -0700652 adapter->hw_csum_rx_error++;
653 return;
654 }
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800655
656 if (!(status_err & IXGBE_RXD_STAT_L4CS))
657 return;
658
659 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
Don Skidmore8bae1b22009-07-23 18:00:39 +0000660 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
661
662 /*
663 * 82599 errata, UDP frames with a 0 checksum can be marked as
664 * checksum errors.
665 */
666 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
667 (adapter->hw.mac.type == ixgbe_mac_82599EB))
668 return;
669
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800670 adapter->hw_csum_rx_error++;
671 return;
672 }
673
Auke Kok9a799d72007-09-15 14:07:45 -0700674 /* It must be a TCP or UDP packet with a valid checksum */
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800675 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kok9a799d72007-09-15 14:07:45 -0700676}
677
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000678static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw,
679 struct ixgbe_ring *rx_ring, u32 val)
680{
681 /*
682 * Force memory writes to complete before letting h/w
683 * know there are new descriptors to fetch. (Only
684 * applicable for weak-ordered memory model archs,
685 * such as IA-64).
686 */
687 wmb();
688 IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val);
689}
690
Auke Kok9a799d72007-09-15 14:07:45 -0700691/**
692 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
693 * @adapter: address of board private structure
694 **/
695static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700696 struct ixgbe_ring *rx_ring,
697 int cleaned_count)
Auke Kok9a799d72007-09-15 14:07:45 -0700698{
Auke Kok9a799d72007-09-15 14:07:45 -0700699 struct pci_dev *pdev = adapter->pdev;
700 union ixgbe_adv_rx_desc *rx_desc;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700701 struct ixgbe_rx_buffer *bi;
Auke Kok9a799d72007-09-15 14:07:45 -0700702 unsigned int i;
Auke Kok9a799d72007-09-15 14:07:45 -0700703
704 i = rx_ring->next_to_use;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700705 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700706
707 while (cleaned_count--) {
708 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
709
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700710 if (!bi->page_dma &&
Yi Zou6e455b8972009-08-06 13:05:44 +0000711 (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700712 if (!bi->page) {
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700713 bi->page = alloc_page(GFP_ATOMIC);
714 if (!bi->page) {
715 adapter->alloc_rx_page_failed++;
716 goto no_buffers;
717 }
718 bi->page_offset = 0;
719 } else {
720 /* use a half page if we're re-using */
721 bi->page_offset ^= (PAGE_SIZE / 2);
Auke Kok9a799d72007-09-15 14:07:45 -0700722 }
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700723
724 bi->page_dma = pci_map_page(pdev, bi->page,
725 bi->page_offset,
726 (PAGE_SIZE / 2),
727 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700728 }
729
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700730 if (!bi->skb) {
Jesse Brandeburg5ecc3612008-12-15 01:00:57 -0800731 struct sk_buff *skb;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000732 /* netdev_alloc_skb reserves 32 bytes up front!! */
733 uint bufsz = rx_ring->rx_buf_len + SMP_CACHE_BYTES;
734 skb = netdev_alloc_skb(adapter->netdev, bufsz);
Auke Kok9a799d72007-09-15 14:07:45 -0700735
736 if (!skb) {
737 adapter->alloc_rx_buff_failed++;
738 goto no_buffers;
739 }
740
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000741 /* advance the data pointer to the next cache line */
742 skb_reserve(skb, (PTR_ALIGN(skb->data, SMP_CACHE_BYTES)
743 - skb->data));
744
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700745 bi->skb = skb;
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +0000746 bi->dma = pci_map_single(pdev, skb->data,
747 rx_ring->rx_buf_len,
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700748 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700749 }
750 /* Refresh the desc even if buffer_addrs didn't change because
751 * each write-back erases this info. */
Yi Zou6e455b8972009-08-06 13:05:44 +0000752 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700753 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
754 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
Auke Kok9a799d72007-09-15 14:07:45 -0700755 } else {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700756 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
Auke Kok9a799d72007-09-15 14:07:45 -0700757 }
758
759 i++;
760 if (i == rx_ring->count)
761 i = 0;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700762 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700763 }
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700764
Auke Kok9a799d72007-09-15 14:07:45 -0700765no_buffers:
766 if (rx_ring->next_to_use != i) {
767 rx_ring->next_to_use = i;
768 if (i-- == 0)
769 i = (rx_ring->count - 1);
770
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000771 ixgbe_release_rx_desc(&adapter->hw, rx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -0700772 }
773}
774
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700775static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
776{
777 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
778}
779
780static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
781{
782 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
783}
784
Alexander Duyckf8212f92009-04-27 22:42:37 +0000785static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
786{
787 return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
788 IXGBE_RXDADV_RSCCNT_MASK) >>
789 IXGBE_RXDADV_RSCCNT_SHIFT;
790}
791
792/**
793 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
794 * @skb: pointer to the last skb in the rsc queue
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +0000795 * @count: pointer to number of packets coalesced in this context
Alexander Duyckf8212f92009-04-27 22:42:37 +0000796 *
797 * This function changes a queue full of hw rsc buffers into a completed
798 * packet. It uses the ->prev pointers to find the first packet and then
799 * turns it into the frag list owner.
800 **/
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +0000801static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
802 u64 *count)
Alexander Duyckf8212f92009-04-27 22:42:37 +0000803{
804 unsigned int frag_list_size = 0;
805
806 while (skb->prev) {
807 struct sk_buff *prev = skb->prev;
808 frag_list_size += skb->len;
809 skb->prev = NULL;
810 skb = prev;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +0000811 *count += 1;
Alexander Duyckf8212f92009-04-27 22:42:37 +0000812 }
813
814 skb_shinfo(skb)->frag_list = skb->next;
815 skb->next = NULL;
816 skb->len += frag_list_size;
817 skb->data_len += frag_list_size;
818 skb->truesize += frag_list_size;
819 return skb;
820}
821
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +0000822struct ixgbe_rsc_cb {
823 dma_addr_t dma;
824};
825
826#define IXGBE_RSC_CB(skb) ((struct ixgbe_rsc_cb *)(skb)->cb)
827
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800828static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700829 struct ixgbe_ring *rx_ring,
830 int *work_done, int work_to_do)
Auke Kok9a799d72007-09-15 14:07:45 -0700831{
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800832 struct ixgbe_adapter *adapter = q_vector->adapter;
Ajit Khaparde2d86f132009-10-07 02:43:49 +0000833 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -0700834 struct pci_dev *pdev = adapter->pdev;
835 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
836 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
837 struct sk_buff *skb;
Alexander Duyckf8212f92009-04-27 22:42:37 +0000838 unsigned int i, rsc_count = 0;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700839 u32 len, staterr;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700840 u16 hdr_info;
841 bool cleaned = false;
Auke Kok9a799d72007-09-15 14:07:45 -0700842 int cleaned_count = 0;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -0800843 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Yi Zou3d8fd382009-06-08 14:38:44 +0000844#ifdef IXGBE_FCOE
845 int ddp_bytes = 0;
846#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -0700847
848 i = rx_ring->next_to_clean;
Auke Kok9a799d72007-09-15 14:07:45 -0700849 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
850 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
851 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700852
853 while (staterr & IXGBE_RXD_STAT_DD) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700854 u32 upper_len = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700855 if (*work_done >= work_to_do)
856 break;
857 (*work_done)++;
858
Milton Miller3c945e52010-02-19 17:44:42 +0000859 rmb(); /* read descriptor and rx_buffer_info after status DD */
Yi Zou6e455b8972009-08-06 13:05:44 +0000860 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700861 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
862 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700863 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -0700864 if (len > IXGBE_RX_HDR_SIZE)
865 len = IXGBE_RX_HDR_SIZE;
866 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700867 } else {
Auke Kok9a799d72007-09-15 14:07:45 -0700868 len = le16_to_cpu(rx_desc->wb.upper.length);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700869 }
Auke Kok9a799d72007-09-15 14:07:45 -0700870
871 cleaned = true;
872 skb = rx_buffer_info->skb;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000873 prefetch(skb->data);
Auke Kok9a799d72007-09-15 14:07:45 -0700874 rx_buffer_info->skb = NULL;
875
Alexander Duyck21fa4e62009-06-04 15:59:49 +0000876 if (rx_buffer_info->dma) {
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +0000877 if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
878 (!(staterr & IXGBE_RXD_STAT_EOP)) &&
879 (!(skb->prev)))
880 /*
881 * When HWRSC is enabled, delay unmapping
882 * of the first packet. It carries the
883 * header information, HW may still
884 * access the header after the writeback.
885 * Only unmap it when EOP is reached
886 */
887 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
888 else
889 pci_unmap_single(pdev, rx_buffer_info->dma,
890 rx_ring->rx_buf_len,
891 PCI_DMA_FROMDEVICE);
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +0000892 rx_buffer_info->dma = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700893 skb_put(skb, len);
894 }
895
896 if (upper_len) {
897 pci_unmap_page(pdev, rx_buffer_info->page_dma,
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700898 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700899 rx_buffer_info->page_dma = 0;
900 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700901 rx_buffer_info->page,
902 rx_buffer_info->page_offset,
903 upper_len);
904
905 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
906 (page_count(rx_buffer_info->page) != 1))
907 rx_buffer_info->page = NULL;
908 else
909 get_page(rx_buffer_info->page);
Auke Kok9a799d72007-09-15 14:07:45 -0700910
911 skb->len += upper_len;
912 skb->data_len += upper_len;
913 skb->truesize += upper_len;
914 }
915
916 i++;
917 if (i == rx_ring->count)
918 i = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700919
920 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
921 prefetch(next_rxd);
Auke Kok9a799d72007-09-15 14:07:45 -0700922 cleaned_count++;
Alexander Duyckf8212f92009-04-27 22:42:37 +0000923
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +0000924 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
Alexander Duyckf8212f92009-04-27 22:42:37 +0000925 rsc_count = ixgbe_get_rsc_count(rx_desc);
926
927 if (rsc_count) {
928 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
929 IXGBE_RXDADV_NEXTP_SHIFT;
930 next_buffer = &rx_ring->rx_buffer_info[nextp];
Alexander Duyckf8212f92009-04-27 22:42:37 +0000931 } else {
932 next_buffer = &rx_ring->rx_buffer_info[i];
933 }
934
Auke Kok9a799d72007-09-15 14:07:45 -0700935 if (staterr & IXGBE_RXD_STAT_EOP) {
Alexander Duyckf8212f92009-04-27 22:42:37 +0000936 if (skb->prev)
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +0000937 skb = ixgbe_transform_rsc_queue(skb, &(rx_ring->rsc_count));
938 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +0000939 if (IXGBE_RSC_CB(skb)->dma) {
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +0000940 pci_unmap_single(pdev, IXGBE_RSC_CB(skb)->dma,
941 rx_ring->rx_buf_len,
942 PCI_DMA_FROMDEVICE);
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +0000943 IXGBE_RSC_CB(skb)->dma = 0;
944 }
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +0000945 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
946 rx_ring->rsc_count += skb_shinfo(skb)->nr_frags;
947 else
948 rx_ring->rsc_count++;
949 rx_ring->rsc_flush++;
950 }
Auke Kok9a799d72007-09-15 14:07:45 -0700951 rx_ring->stats.packets++;
952 rx_ring->stats.bytes += skb->len;
953 } else {
Yi Zou6e455b8972009-08-06 13:05:44 +0000954 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +0000955 rx_buffer_info->skb = next_buffer->skb;
956 rx_buffer_info->dma = next_buffer->dma;
957 next_buffer->skb = skb;
958 next_buffer->dma = 0;
959 } else {
960 skb->next = next_buffer->skb;
961 skb->next->prev = skb;
962 }
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000963 rx_ring->non_eop_descs++;
Auke Kok9a799d72007-09-15 14:07:45 -0700964 goto next_desc;
965 }
966
967 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
968 dev_kfree_skb_irq(skb);
969 goto next_desc;
970 }
971
Don Skidmore8bae1b22009-07-23 18:00:39 +0000972 ixgbe_rx_checksum(adapter, rx_desc, skb);
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -0800973
974 /* probably a little skewed due to removing CRC */
975 total_rx_bytes += skb->len;
976 total_rx_packets++;
977
Jesse Brandeburg74ce8dd22008-09-11 20:03:23 -0700978 skb->protocol = eth_type_trans(skb, adapter->netdev);
Yi Zou332d4a72009-05-13 13:11:53 +0000979#ifdef IXGBE_FCOE
980 /* if ddp, not passing to ULD unless for FCP_RSP or error */
Yi Zou3d8fd382009-06-08 14:38:44 +0000981 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
982 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
983 if (!ddp_bytes)
Yi Zou332d4a72009-05-13 13:11:53 +0000984 goto next_desc;
Yi Zou3d8fd382009-06-08 14:38:44 +0000985 }
Yi Zou332d4a72009-05-13 13:11:53 +0000986#endif /* IXGBE_FCOE */
Alexander Duyckfdaff1c2009-05-06 10:43:47 +0000987 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
Auke Kok9a799d72007-09-15 14:07:45 -0700988
989next_desc:
990 rx_desc->wb.upper.status_error = 0;
991
992 /* return some buffers to hardware, one at a time is too slow */
993 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
994 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
995 cleaned_count = 0;
996 }
997
998 /* use prefetched values */
999 rx_desc = next_rxd;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001000 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07001001
1002 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07001003 }
1004
Auke Kok9a799d72007-09-15 14:07:45 -07001005 rx_ring->next_to_clean = i;
1006 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1007
1008 if (cleaned_count)
1009 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1010
Yi Zou3d8fd382009-06-08 14:38:44 +00001011#ifdef IXGBE_FCOE
1012 /* include DDPed FCoE data */
1013 if (ddp_bytes > 0) {
1014 unsigned int mss;
1015
1016 mss = adapter->netdev->mtu - sizeof(struct fcoe_hdr) -
1017 sizeof(struct fc_frame_header) -
1018 sizeof(struct fcoe_crc_eof);
1019 if (mss > 512)
1020 mss &= ~511;
1021 total_rx_bytes += ddp_bytes;
1022 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1023 }
1024#endif /* IXGBE_FCOE */
1025
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001026 rx_ring->total_packets += total_rx_packets;
1027 rx_ring->total_bytes += total_rx_bytes;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00001028 netdev->stats.rx_bytes += total_rx_bytes;
1029 netdev->stats.rx_packets += total_rx_packets;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001030
Auke Kok9a799d72007-09-15 14:07:45 -07001031 return cleaned;
1032}
1033
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001034static int ixgbe_clean_rxonly(struct napi_struct *, int);
Auke Kok9a799d72007-09-15 14:07:45 -07001035/**
1036 * ixgbe_configure_msix - Configure MSI-X hardware
1037 * @adapter: board private structure
1038 *
1039 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1040 * interrupts.
1041 **/
1042static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1043{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001044 struct ixgbe_q_vector *q_vector;
1045 int i, j, q_vectors, v_idx, r_idx;
1046 u32 mask;
Auke Kok9a799d72007-09-15 14:07:45 -07001047
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001048 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1049
Jesse Brandeburg4df10462009-03-13 22:15:31 +00001050 /*
1051 * Populate the IVAR table and set the ITR values to the
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001052 * corresponding register.
1053 */
1054 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00001055 q_vector = adapter->q_vector[v_idx];
Akinobu Mita984b3f52010-03-05 13:41:37 -08001056 /* XXX for_each_set_bit(...) */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001057 r_idx = find_first_bit(q_vector->rxr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001058 adapter->num_rx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001059
1060 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001061 j = adapter->rx_ring[r_idx]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001062 ixgbe_set_ivar(adapter, 0, j, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001063 r_idx = find_next_bit(q_vector->rxr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001064 adapter->num_rx_queues,
1065 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001066 }
1067 r_idx = find_first_bit(q_vector->txr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001068 adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001069
1070 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001071 j = adapter->tx_ring[r_idx]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001072 ixgbe_set_ivar(adapter, 1, j, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001073 r_idx = find_next_bit(q_vector->txr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001074 adapter->num_tx_queues,
1075 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001076 }
1077
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001078 if (q_vector->txr_count && !q_vector->rxr_count)
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001079 /* tx only */
1080 q_vector->eitr = adapter->tx_eitr_param;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001081 else if (q_vector->rxr_count)
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001082 /* rx or mixed */
1083 q_vector->eitr = adapter->rx_eitr_param;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001084
Alexander Duyckfe49f042009-06-04 16:00:09 +00001085 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07001086 }
1087
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001088 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
1089 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
1090 v_idx);
1091 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
1092 ixgbe_set_ivar(adapter, -1, 1, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001093 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
Auke Kok9a799d72007-09-15 14:07:45 -07001094
Jesse Brandeburg41fb9242008-09-11 19:55:58 -07001095 /* set up to autoclear timer, and the vectors */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001096 mask = IXGBE_EIMS_ENABLE_MASK;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001097 if (adapter->num_vfs)
1098 mask &= ~(IXGBE_EIMS_OTHER |
1099 IXGBE_EIMS_MAILBOX |
1100 IXGBE_EIMS_LSC);
1101 else
1102 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001103 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
Auke Kok9a799d72007-09-15 14:07:45 -07001104}
1105
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001106enum latency_range {
1107 lowest_latency = 0,
1108 low_latency = 1,
1109 bulk_latency = 2,
1110 latency_invalid = 255
1111};
1112
1113/**
1114 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1115 * @adapter: pointer to adapter
1116 * @eitr: eitr setting (ints per sec) to give last timeslice
1117 * @itr_setting: current throttle rate in ints/second
1118 * @packets: the number of packets during this measurement interval
1119 * @bytes: the number of bytes during this measurement interval
1120 *
1121 * Stores a new ITR value based on packets and byte
1122 * counts during the last interrupt. The advantage of per interrupt
1123 * computation is faster updates and more accurate ITR for the current
1124 * traffic pattern. Constants in this function were computed
1125 * based on theoretical maximum wire speed and thresholds were set based
1126 * on testing data as well as attempting to minimize response time
1127 * while increasing bulk throughput.
1128 * this functionality is controlled by the InterruptThrottleRate module
1129 * parameter (see ixgbe_param.c)
1130 **/
1131static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001132 u32 eitr, u8 itr_setting,
1133 int packets, int bytes)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001134{
1135 unsigned int retval = itr_setting;
1136 u32 timepassed_us;
1137 u64 bytes_perint;
1138
1139 if (packets == 0)
1140 goto update_itr_done;
1141
1142
1143 /* simple throttlerate management
1144 * 0-20MB/s lowest (100000 ints/s)
1145 * 20-100MB/s low (20000 ints/s)
1146 * 100-1249MB/s bulk (8000 ints/s)
1147 */
1148 /* what was last interrupt timeslice? */
1149 timepassed_us = 1000000/eitr;
1150 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1151
1152 switch (itr_setting) {
1153 case lowest_latency:
1154 if (bytes_perint > adapter->eitr_low)
1155 retval = low_latency;
1156 break;
1157 case low_latency:
1158 if (bytes_perint > adapter->eitr_high)
1159 retval = bulk_latency;
1160 else if (bytes_perint <= adapter->eitr_low)
1161 retval = lowest_latency;
1162 break;
1163 case bulk_latency:
1164 if (bytes_perint <= adapter->eitr_high)
1165 retval = low_latency;
1166 break;
1167 }
1168
1169update_itr_done:
1170 return retval;
1171}
1172
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001173/**
1174 * ixgbe_write_eitr - write EITR register in hardware specific way
Alexander Duyckfe49f042009-06-04 16:00:09 +00001175 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001176 *
1177 * This function is made to be called by ethtool and by the driver
1178 * when it needs to update EITR registers at runtime. Hardware
1179 * specific quirks/differences are taken care of here.
1180 */
Alexander Duyckfe49f042009-06-04 16:00:09 +00001181void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001182{
Alexander Duyckfe49f042009-06-04 16:00:09 +00001183 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001184 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001185 int v_idx = q_vector->v_idx;
1186 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1187
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001188 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1189 /* must write high and low 16 bits to reset counter */
1190 itr_reg |= (itr_reg << 16);
1191 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
1192 /*
Jesse Brandeburgf8d1dcaf2010-04-27 01:37:20 +00001193 * 82599 can support a value of zero, so allow it for
1194 * max interrupt rate, but there is an errata where it can
1195 * not be zero with RSC
1196 */
1197 if (itr_reg == 8 &&
1198 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1199 itr_reg = 0;
1200
1201 /*
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001202 * set the WDIS bit to not clear the timer bits and cause an
1203 * immediate assertion of the interrupt
1204 */
1205 itr_reg |= IXGBE_EITR_CNT_WDIS;
1206 }
1207 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1208}
1209
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001210static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1211{
1212 struct ixgbe_adapter *adapter = q_vector->adapter;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001213 u32 new_itr;
1214 u8 current_itr, ret_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001215 int i, r_idx;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001216 struct ixgbe_ring *rx_ring, *tx_ring;
1217
1218 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1219 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001220 tx_ring = adapter->tx_ring[r_idx];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001221 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001222 q_vector->tx_itr,
1223 tx_ring->total_packets,
1224 tx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001225 /* if the result for this queue would decrease interrupt
1226 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001227 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001228 q_vector->tx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001229 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001230 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001231 }
1232
1233 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1234 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001235 rx_ring = adapter->rx_ring[r_idx];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001236 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001237 q_vector->rx_itr,
1238 rx_ring->total_packets,
1239 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001240 /* if the result for this queue would decrease interrupt
1241 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001242 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001243 q_vector->rx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001244 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001245 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001246 }
1247
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001248 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001249
1250 switch (current_itr) {
1251 /* counts and packets in update_itr are dependent on these numbers */
1252 case lowest_latency:
1253 new_itr = 100000;
1254 break;
1255 case low_latency:
1256 new_itr = 20000; /* aka hwitr = ~200 */
1257 break;
1258 case bulk_latency:
1259 default:
1260 new_itr = 8000;
1261 break;
1262 }
1263
1264 if (new_itr != q_vector->eitr) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00001265 /* do an exponential smoothing */
1266 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001267
1268 /* save the algorithm value here, not the smoothed one */
1269 q_vector->eitr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001270
1271 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001272 }
1273
1274 return;
1275}
1276
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001277static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1278{
1279 struct ixgbe_hw *hw = &adapter->hw;
1280
1281 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1282 (eicr & IXGBE_EICR_GPI_SDP1)) {
1283 DPRINTK(PROBE, CRIT, "Fan has stopped, replace the adapter\n");
1284 /* write to clear the interrupt */
1285 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1286 }
1287}
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001288
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001289static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1290{
1291 struct ixgbe_hw *hw = &adapter->hw;
1292
1293 if (eicr & IXGBE_EICR_GPI_SDP1) {
1294 /* Clear the interrupt */
1295 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1296 schedule_work(&adapter->multispeed_fiber_task);
1297 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1298 /* Clear the interrupt */
1299 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1300 schedule_work(&adapter->sfp_config_module_task);
1301 } else {
1302 /* Interrupt isn't for us... */
1303 return;
1304 }
1305}
1306
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001307static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1308{
1309 struct ixgbe_hw *hw = &adapter->hw;
1310
1311 adapter->lsc_int++;
1312 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1313 adapter->link_check_timeout = jiffies;
1314 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1315 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
Nelson, Shannon8a0717f2009-11-12 18:47:11 +00001316 IXGBE_WRITE_FLUSH(hw);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001317 schedule_work(&adapter->watchdog_task);
1318 }
1319}
1320
Auke Kok9a799d72007-09-15 14:07:45 -07001321static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1322{
1323 struct net_device *netdev = data;
1324 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1325 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore54037502009-02-21 15:42:56 -08001326 u32 eicr;
1327
1328 /*
1329 * Workaround for Silicon errata. Use clear-by-write instead
1330 * of clear-by-read. Reading with EICS will return the
1331 * interrupt causes without clearing, which later be done
1332 * with the write to EICR.
1333 */
1334 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1335 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
Auke Kok9a799d72007-09-15 14:07:45 -07001336
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001337 if (eicr & IXGBE_EICR_LSC)
1338 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001339
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001340 if (eicr & IXGBE_EICR_MAILBOX)
1341 ixgbe_msg_task(adapter);
1342
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001343 if (hw->mac.type == ixgbe_mac_82598EB)
1344 ixgbe_check_fan_failure(adapter, eicr);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001345
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001346 if (hw->mac.type == ixgbe_mac_82599EB) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001347 ixgbe_check_sfp_event(adapter, eicr);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001348
1349 /* Handle Flow Director Full threshold interrupt */
1350 if (eicr & IXGBE_EICR_FLOW_DIR) {
1351 int i;
1352 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1353 /* Disable transmits before FDIR Re-initialization */
1354 netif_tx_stop_all_queues(netdev);
1355 for (i = 0; i < adapter->num_tx_queues; i++) {
1356 struct ixgbe_ring *tx_ring =
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001357 adapter->tx_ring[i];
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001358 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
1359 &tx_ring->reinit_state))
1360 schedule_work(&adapter->fdir_reinit_task);
1361 }
1362 }
1363 }
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001364 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1365 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
Auke Kok9a799d72007-09-15 14:07:45 -07001366
1367 return IRQ_HANDLED;
1368}
1369
Alexander Duyckfe49f042009-06-04 16:00:09 +00001370static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1371 u64 qmask)
1372{
1373 u32 mask;
1374
1375 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1376 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1377 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1378 } else {
1379 mask = (qmask & 0xFFFFFFFF);
1380 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1381 mask = (qmask >> 32);
1382 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1383 }
1384 /* skip the flush */
1385}
1386
1387static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
1388 u64 qmask)
1389{
1390 u32 mask;
1391
1392 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1393 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1394 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1395 } else {
1396 mask = (qmask & 0xFFFFFFFF);
1397 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1398 mask = (qmask >> 32);
1399 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1400 }
1401 /* skip the flush */
1402}
1403
Auke Kok9a799d72007-09-15 14:07:45 -07001404static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1405{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001406 struct ixgbe_q_vector *q_vector = data;
1407 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001408 struct ixgbe_ring *tx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001409 int i, r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -07001410
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001411 if (!q_vector->txr_count)
1412 return IRQ_HANDLED;
1413
1414 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1415 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001416 tx_ring = adapter->tx_ring[r_idx];
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001417 tx_ring->total_bytes = 0;
1418 tx_ring->total_packets = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001419 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001420 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001421 }
1422
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001423 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck91281fd2009-06-04 16:00:27 +00001424 napi_schedule(&q_vector->napi);
1425
Auke Kok9a799d72007-09-15 14:07:45 -07001426 return IRQ_HANDLED;
1427}
1428
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001429/**
1430 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1431 * @irq: unused
1432 * @data: pointer to our q_vector struct for this interrupt vector
1433 **/
Auke Kok9a799d72007-09-15 14:07:45 -07001434static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1435{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001436 struct ixgbe_q_vector *q_vector = data;
1437 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001438 struct ixgbe_ring *rx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001439 int r_idx;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001440 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07001441
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001442 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001443 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001444 rx_ring = adapter->rx_ring[r_idx];
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001445 rx_ring->total_bytes = 0;
1446 rx_ring->total_packets = 0;
1447 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1448 r_idx + 1);
1449 }
1450
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001451 if (!q_vector->rxr_count)
1452 return IRQ_HANDLED;
1453
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001454 /* disable interrupts on this vector only */
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001455 /* EIAM disabled interrupts (on this vector) for us */
Ben Hutchings288379f2009-01-19 16:43:59 -08001456 napi_schedule(&q_vector->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001457
Auke Kok9a799d72007-09-15 14:07:45 -07001458 return IRQ_HANDLED;
1459}
1460
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001461static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1462{
Alexander Duyck91281fd2009-06-04 16:00:27 +00001463 struct ixgbe_q_vector *q_vector = data;
1464 struct ixgbe_adapter *adapter = q_vector->adapter;
1465 struct ixgbe_ring *ring;
1466 int r_idx;
1467 int i;
1468
1469 if (!q_vector->txr_count && !q_vector->rxr_count)
1470 return IRQ_HANDLED;
1471
1472 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1473 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001474 ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001475 ring->total_bytes = 0;
1476 ring->total_packets = 0;
1477 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1478 r_idx + 1);
1479 }
1480
1481 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1482 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001483 ring = adapter->rx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001484 ring->total_bytes = 0;
1485 ring->total_packets = 0;
1486 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1487 r_idx + 1);
1488 }
1489
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001490 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck91281fd2009-06-04 16:00:27 +00001491 napi_schedule(&q_vector->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001492
1493 return IRQ_HANDLED;
1494}
1495
1496/**
1497 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1498 * @napi: napi struct with our devices info in it
1499 * @budget: amount of work driver is allowed to do this pass, in packets
1500 *
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001501 * This function is optimized for cleaning one queue only on a single
1502 * q_vector!!!
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001503 **/
Auke Kok9a799d72007-09-15 14:07:45 -07001504static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1505{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001506 struct ixgbe_q_vector *q_vector =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001507 container_of(napi, struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001508 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001509 struct ixgbe_ring *rx_ring = NULL;
Auke Kok9a799d72007-09-15 14:07:45 -07001510 int work_done = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001511 long r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -07001512
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001513 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001514 rx_ring = adapter->rx_ring[r_idx];
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001515#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001516 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001517 ixgbe_update_rx_dca(adapter, rx_ring);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001518#endif
Auke Kok9a799d72007-09-15 14:07:45 -07001519
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001520 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07001521
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001522 /* If all Rx work done, exit the polling mode */
1523 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001524 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001525 if (adapter->rx_itr_setting & 1)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001526 ixgbe_set_itr_msix(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07001527 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyckfe49f042009-06-04 16:00:09 +00001528 ixgbe_irq_enable_queues(adapter,
1529 ((u64)1 << q_vector->v_idx));
Auke Kok9a799d72007-09-15 14:07:45 -07001530 }
1531
1532 return work_done;
1533}
1534
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001535/**
Alexander Duyck91281fd2009-06-04 16:00:27 +00001536 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001537 * @napi: napi struct with our devices info in it
1538 * @budget: amount of work driver is allowed to do this pass, in packets
1539 *
1540 * This function will clean more than one rx queue associated with a
1541 * q_vector.
1542 **/
Alexander Duyck91281fd2009-06-04 16:00:27 +00001543static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001544{
1545 struct ixgbe_q_vector *q_vector =
1546 container_of(napi, struct ixgbe_q_vector, napi);
1547 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyck91281fd2009-06-04 16:00:27 +00001548 struct ixgbe_ring *ring = NULL;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001549 int work_done = 0, i;
1550 long r_idx;
Alexander Duyck91281fd2009-06-04 16:00:27 +00001551 bool tx_clean_complete = true;
1552
1553 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1554 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001555 ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001556#ifdef CONFIG_IXGBE_DCA
1557 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1558 ixgbe_update_tx_dca(adapter, ring);
1559#endif
1560 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1561 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1562 r_idx + 1);
1563 }
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001564
1565 /* attempt to distribute budget to each queue fairly, but don't allow
1566 * the budget to go below 1 because we'll exit polling */
1567 budget /= (q_vector->rxr_count ?: 1);
1568 budget = max(budget, 1);
1569 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1570 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001571 ring = adapter->rx_ring[r_idx];
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001572#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001573 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Alexander Duyck91281fd2009-06-04 16:00:27 +00001574 ixgbe_update_rx_dca(adapter, ring);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001575#endif
Alexander Duyck91281fd2009-06-04 16:00:27 +00001576 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001577 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1578 r_idx + 1);
1579 }
1580
1581 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001582 ring = adapter->rx_ring[r_idx];
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001583 /* If all Rx work done, exit the polling mode */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07001584 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001585 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001586 if (adapter->rx_itr_setting & 1)
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001587 ixgbe_set_itr_msix(q_vector);
1588 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyckfe49f042009-06-04 16:00:09 +00001589 ixgbe_irq_enable_queues(adapter,
1590 ((u64)1 << q_vector->v_idx));
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001591 return 0;
1592 }
1593
1594 return work_done;
1595}
Alexander Duyck91281fd2009-06-04 16:00:27 +00001596
1597/**
1598 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1599 * @napi: napi struct with our devices info in it
1600 * @budget: amount of work driver is allowed to do this pass, in packets
1601 *
1602 * This function is optimized for cleaning one queue only on a single
1603 * q_vector!!!
1604 **/
1605static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
1606{
1607 struct ixgbe_q_vector *q_vector =
1608 container_of(napi, struct ixgbe_q_vector, napi);
1609 struct ixgbe_adapter *adapter = q_vector->adapter;
1610 struct ixgbe_ring *tx_ring = NULL;
1611 int work_done = 0;
1612 long r_idx;
1613
1614 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001615 tx_ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001616#ifdef CONFIG_IXGBE_DCA
1617 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1618 ixgbe_update_tx_dca(adapter, tx_ring);
1619#endif
1620
1621 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
1622 work_done = budget;
1623
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001624 /* If all Tx work done, exit the polling mode */
Alexander Duyck91281fd2009-06-04 16:00:27 +00001625 if (work_done < budget) {
1626 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001627 if (adapter->tx_itr_setting & 1)
Alexander Duyck91281fd2009-06-04 16:00:27 +00001628 ixgbe_set_itr_msix(q_vector);
1629 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1630 ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
1631 }
1632
1633 return work_done;
1634}
1635
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001636static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001637 int r_idx)
Auke Kok9a799d72007-09-15 14:07:45 -07001638{
Alexander Duyck7a921c92009-05-06 10:43:28 +00001639 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
1640
1641 set_bit(r_idx, q_vector->rxr_idx);
1642 q_vector->rxr_count++;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001643}
Auke Kok9a799d72007-09-15 14:07:45 -07001644
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001645static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
Alexander Duyck7a921c92009-05-06 10:43:28 +00001646 int t_idx)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001647{
Alexander Duyck7a921c92009-05-06 10:43:28 +00001648 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
1649
1650 set_bit(t_idx, q_vector->txr_idx);
1651 q_vector->txr_count++;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001652}
Auke Kok9a799d72007-09-15 14:07:45 -07001653
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001654/**
1655 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
1656 * @adapter: board private structure to initialize
1657 * @vectors: allotted vector count for descriptor rings
1658 *
1659 * This function maps descriptor rings to the queue-specific vectors
1660 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1661 * one vector per ring/queue, but on a constrained vector budget, we
1662 * group the rings as "efficiently" as possible. You would add new
1663 * mapping configurations in here.
1664 **/
1665static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001666 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001667{
1668 int v_start = 0;
1669 int rxr_idx = 0, txr_idx = 0;
1670 int rxr_remaining = adapter->num_rx_queues;
1671 int txr_remaining = adapter->num_tx_queues;
1672 int i, j;
1673 int rqpv, tqpv;
1674 int err = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001675
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001676 /* No mapping required if MSI-X is disabled. */
1677 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -07001678 goto out;
1679
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001680 /*
1681 * The ideal configuration...
1682 * We have enough vectors to map one per queue.
1683 */
1684 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
1685 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
1686 map_vector_to_rxq(adapter, v_start, rxr_idx);
1687
1688 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
1689 map_vector_to_txq(adapter, v_start, txr_idx);
1690
1691 goto out;
1692 }
1693
1694 /*
1695 * If we don't have enough vectors for a 1-to-1
1696 * mapping, we'll have to group them so there are
1697 * multiple queues per vector.
1698 */
1699 /* Re-adjusting *qpv takes care of the remainder. */
1700 for (i = v_start; i < vectors; i++) {
1701 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
1702 for (j = 0; j < rqpv; j++) {
1703 map_vector_to_rxq(adapter, i, rxr_idx);
1704 rxr_idx++;
1705 rxr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07001706 }
Auke Kok9a799d72007-09-15 14:07:45 -07001707 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001708 for (i = v_start; i < vectors; i++) {
1709 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
1710 for (j = 0; j < tqpv; j++) {
1711 map_vector_to_txq(adapter, i, txr_idx);
1712 txr_idx++;
1713 txr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07001714 }
Auke Kok9a799d72007-09-15 14:07:45 -07001715 }
1716
Auke Kok9a799d72007-09-15 14:07:45 -07001717out:
Auke Kok9a799d72007-09-15 14:07:45 -07001718 return err;
1719}
1720
1721/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001722 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
1723 * @adapter: board private structure
1724 *
1725 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
1726 * interrupts from the kernel.
1727 **/
1728static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
1729{
1730 struct net_device *netdev = adapter->netdev;
1731 irqreturn_t (*handler)(int, void *);
1732 int i, vector, q_vectors, err;
Robert Olssoncb13fc22008-11-25 16:43:52 -08001733 int ri=0, ti=0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001734
1735 /* Decrement for Other and TCP Timer vectors */
1736 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1737
1738 /* Map the Tx/Rx rings to the vectors we were allotted. */
1739 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
1740 if (err)
1741 goto out;
1742
1743#define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001744 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
1745 &ixgbe_msix_clean_many)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001746 for (vector = 0; vector < q_vectors; vector++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00001747 handler = SET_HANDLER(adapter->q_vector[vector]);
Robert Olssoncb13fc22008-11-25 16:43:52 -08001748
1749 if(handler == &ixgbe_msix_clean_rx) {
1750 sprintf(adapter->name[vector], "%s-%s-%d",
1751 netdev->name, "rx", ri++);
1752 }
1753 else if(handler == &ixgbe_msix_clean_tx) {
1754 sprintf(adapter->name[vector], "%s-%s-%d",
1755 netdev->name, "tx", ti++);
1756 }
1757 else
1758 sprintf(adapter->name[vector], "%s-%s-%d",
1759 netdev->name, "TxRx", vector);
1760
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001761 err = request_irq(adapter->msix_entries[vector].vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001762 handler, 0, adapter->name[vector],
Alexander Duyck7a921c92009-05-06 10:43:28 +00001763 adapter->q_vector[vector]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001764 if (err) {
1765 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001766 "request_irq failed for MSIX interrupt "
1767 "Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001768 goto free_queue_irqs;
1769 }
1770 }
1771
1772 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
1773 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08001774 ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001775 if (err) {
1776 DPRINTK(PROBE, ERR,
1777 "request_irq for msix_lsc failed: %d\n", err);
1778 goto free_queue_irqs;
1779 }
1780
1781 return 0;
1782
1783free_queue_irqs:
1784 for (i = vector - 1; i >= 0; i--)
1785 free_irq(adapter->msix_entries[--vector].vector,
Alexander Duyck7a921c92009-05-06 10:43:28 +00001786 adapter->q_vector[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001787 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
1788 pci_disable_msix(adapter->pdev);
1789 kfree(adapter->msix_entries);
1790 adapter->msix_entries = NULL;
1791out:
1792 return err;
1793}
1794
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001795static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
1796{
Alexander Duyck7a921c92009-05-06 10:43:28 +00001797 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001798 u8 current_itr;
1799 u32 new_itr = q_vector->eitr;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001800 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
1801 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001802
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001803 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001804 q_vector->tx_itr,
1805 tx_ring->total_packets,
1806 tx_ring->total_bytes);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001807 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001808 q_vector->rx_itr,
1809 rx_ring->total_packets,
1810 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001811
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001812 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001813
1814 switch (current_itr) {
1815 /* counts and packets in update_itr are dependent on these numbers */
1816 case lowest_latency:
1817 new_itr = 100000;
1818 break;
1819 case low_latency:
1820 new_itr = 20000; /* aka hwitr = ~200 */
1821 break;
1822 case bulk_latency:
1823 new_itr = 8000;
1824 break;
1825 default:
1826 break;
1827 }
1828
1829 if (new_itr != q_vector->eitr) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00001830 /* do an exponential smoothing */
1831 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001832
1833 /* save the algorithm value here, not the smoothed one */
1834 q_vector->eitr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001835
1836 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001837 }
1838
1839 return;
1840}
1841
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001842/**
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001843 * ixgbe_irq_enable - Enable default interrupt generation settings
1844 * @adapter: board private structure
1845 **/
1846static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
1847{
1848 u32 mask;
Nelson, Shannon835462f2009-04-27 22:42:54 +00001849
1850 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
David S. Miller6ab33d512008-11-20 16:44:00 -08001851 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
1852 mask |= IXGBE_EIMS_GPI_SDP1;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001853 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00001854 mask |= IXGBE_EIMS_ECC;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001855 mask |= IXGBE_EIMS_GPI_SDP1;
1856 mask |= IXGBE_EIMS_GPI_SDP2;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001857 if (adapter->num_vfs)
1858 mask |= IXGBE_EIMS_MAILBOX;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001859 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001860 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
1861 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
1862 mask |= IXGBE_EIMS_FLOW_DIR;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001863
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001864 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
Nelson, Shannon835462f2009-04-27 22:42:54 +00001865 ixgbe_irq_enable_queues(adapter, ~0);
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001866 IXGBE_WRITE_FLUSH(&adapter->hw);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001867
1868 if (adapter->num_vfs > 32) {
1869 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
1870 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
1871 }
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001872}
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001873
1874/**
1875 * ixgbe_intr - legacy mode Interrupt Handler
Auke Kok9a799d72007-09-15 14:07:45 -07001876 * @irq: interrupt number
1877 * @data: pointer to a network interface device structure
Auke Kok9a799d72007-09-15 14:07:45 -07001878 **/
1879static irqreturn_t ixgbe_intr(int irq, void *data)
1880{
1881 struct net_device *netdev = data;
1882 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1883 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck7a921c92009-05-06 10:43:28 +00001884 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07001885 u32 eicr;
1886
Don Skidmore54037502009-02-21 15:42:56 -08001887 /*
1888 * Workaround for silicon errata. Mask the interrupts
1889 * before the read of EICR.
1890 */
1891 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
1892
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001893 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
1894 * therefore no explict interrupt disable is necessary */
1895 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07001896 if (!eicr) {
1897 /* shared interrupt alert!
1898 * make sure interrupts are enabled because the read will
1899 * have disabled interrupts due to EIAM */
1900 ixgbe_irq_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07001901 return IRQ_NONE; /* Not our interrupt */
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07001902 }
Auke Kok9a799d72007-09-15 14:07:45 -07001903
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001904 if (eicr & IXGBE_EICR_LSC)
1905 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001906
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001907 if (hw->mac.type == ixgbe_mac_82599EB)
1908 ixgbe_check_sfp_event(adapter, eicr);
1909
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001910 ixgbe_check_fan_failure(adapter, eicr);
1911
Alexander Duyck7a921c92009-05-06 10:43:28 +00001912 if (napi_schedule_prep(&(q_vector->napi))) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001913 adapter->tx_ring[0]->total_packets = 0;
1914 adapter->tx_ring[0]->total_bytes = 0;
1915 adapter->rx_ring[0]->total_packets = 0;
1916 adapter->rx_ring[0]->total_bytes = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001917 /* would disable interrupts here but EIAM disabled it */
Alexander Duyck7a921c92009-05-06 10:43:28 +00001918 __napi_schedule(&(q_vector->napi));
Auke Kok9a799d72007-09-15 14:07:45 -07001919 }
1920
1921 return IRQ_HANDLED;
1922}
1923
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001924static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
1925{
1926 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1927
1928 for (i = 0; i < q_vectors; i++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00001929 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001930 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
1931 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
1932 q_vector->rxr_count = 0;
1933 q_vector->txr_count = 0;
1934 }
1935}
1936
Auke Kok9a799d72007-09-15 14:07:45 -07001937/**
1938 * ixgbe_request_irq - initialize interrupts
1939 * @adapter: board private structure
1940 *
1941 * Attempts to configure interrupts using the best available
1942 * capabilities of the hardware and kernel.
1943 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001944static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07001945{
1946 struct net_device *netdev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001947 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07001948
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001949 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1950 err = ixgbe_request_msix_irqs(adapter);
1951 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
Joe Perchesa0607fd2009-11-18 23:29:17 -08001952 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001953 netdev->name, netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001954 } else {
Joe Perchesa0607fd2009-11-18 23:29:17 -08001955 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001956 netdev->name, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001957 }
1958
Auke Kok9a799d72007-09-15 14:07:45 -07001959 if (err)
1960 DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err);
1961
Auke Kok9a799d72007-09-15 14:07:45 -07001962 return err;
1963}
1964
1965static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
1966{
1967 struct net_device *netdev = adapter->netdev;
1968
1969 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001970 int i, q_vectors;
Auke Kok9a799d72007-09-15 14:07:45 -07001971
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001972 q_vectors = adapter->num_msix_vectors;
1973
1974 i = q_vectors - 1;
Auke Kok9a799d72007-09-15 14:07:45 -07001975 free_irq(adapter->msix_entries[i].vector, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001976
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001977 i--;
1978 for (; i >= 0; i--) {
1979 free_irq(adapter->msix_entries[i].vector,
Alexander Duyck7a921c92009-05-06 10:43:28 +00001980 adapter->q_vector[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001981 }
1982
1983 ixgbe_reset_q_vectors(adapter);
1984 } else {
1985 free_irq(adapter->pdev->irq, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001986 }
1987}
1988
1989/**
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00001990 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
1991 * @adapter: board private structure
1992 **/
1993static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
1994{
Nelson, Shannon835462f2009-04-27 22:42:54 +00001995 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1996 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
1997 } else {
1998 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
1999 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002000 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002001 if (adapter->num_vfs > 32)
2002 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002003 }
2004 IXGBE_WRITE_FLUSH(&adapter->hw);
2005 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2006 int i;
2007 for (i = 0; i < adapter->num_msix_vectors; i++)
2008 synchronize_irq(adapter->msix_entries[i].vector);
2009 } else {
2010 synchronize_irq(adapter->pdev->irq);
2011 }
2012}
2013
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002014/**
Auke Kok9a799d72007-09-15 14:07:45 -07002015 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2016 *
2017 **/
2018static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2019{
Auke Kok9a799d72007-09-15 14:07:45 -07002020 struct ixgbe_hw *hw = &adapter->hw;
2021
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002022 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
Nelson, Shannonf7554a22009-09-18 09:46:06 +00002023 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
Auke Kok9a799d72007-09-15 14:07:45 -07002024
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002025 ixgbe_set_ivar(adapter, 0, 0, 0);
2026 ixgbe_set_ivar(adapter, 1, 0, 0);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002027
2028 map_vector_to_rxq(adapter, 0, 0);
2029 map_vector_to_txq(adapter, 0, 0);
2030
2031 DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n");
Auke Kok9a799d72007-09-15 14:07:45 -07002032}
2033
2034/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002035 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07002036 * @adapter: board private structure
2037 *
2038 * Configure the Tx unit of the MAC after a reset.
2039 **/
2040static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2041{
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08002042 u64 tdba;
Auke Kok9a799d72007-09-15 14:07:45 -07002043 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002044 u32 i, j, tdlen, txctrl;
Auke Kok9a799d72007-09-15 14:07:45 -07002045
2046 /* Setup the HW Tx Head and Tail descriptor pointers */
2047 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002048 struct ixgbe_ring *ring = adapter->tx_ring[i];
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002049 j = ring->reg_idx;
2050 tdba = ring->dma;
2051 tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002052 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j),
Yang Hongyang284901a2009-04-06 19:01:15 -07002053 (tdba & DMA_BIT_MASK(32)));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002054 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32));
2055 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen);
2056 IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0);
2057 IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002058 adapter->tx_ring[i]->head = IXGBE_TDH(j);
2059 adapter->tx_ring[i]->tail = IXGBE_TDT(j);
Peter P Waskiewicz Jr84f62d42009-09-30 12:07:16 +00002060 /*
2061 * Disable Tx Head Writeback RO bit, since this hoses
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002062 * bookkeeping if things aren't delivered in order.
2063 */
Peter P Waskiewicz Jr84f62d42009-09-30 12:07:16 +00002064 switch (hw->mac.type) {
2065 case ixgbe_mac_82598EB:
2066 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j));
2067 break;
2068 case ixgbe_mac_82599EB:
2069 default:
2070 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(j));
2071 break;
2072 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002073 txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
Peter P Waskiewicz Jr84f62d42009-09-30 12:07:16 +00002074 switch (hw->mac.type) {
2075 case ixgbe_mac_82598EB:
2076 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl);
2077 break;
2078 case ixgbe_mac_82599EB:
2079 default:
2080 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(j), txctrl);
2081 break;
2082 }
Auke Kok9a799d72007-09-15 14:07:45 -07002083 }
Don Skidmoreee5f784a2009-11-06 12:56:20 +00002084
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002085 if (hw->mac.type == ixgbe_mac_82599EB) {
Don Skidmoreee5f784a2009-11-06 12:56:20 +00002086 u32 rttdcs;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002087 u32 mask;
Don Skidmoreee5f784a2009-11-06 12:56:20 +00002088
2089 /* disable the arbiter while setting MTQC */
2090 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2091 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2092 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2093
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002094 /* set transmit pool layout */
2095 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2096 switch (adapter->flags & mask) {
2097
2098 case (IXGBE_FLAG_SRIOV_ENABLED):
2099 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2100 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2101 break;
2102
2103 case (IXGBE_FLAG_DCB_ENABLED):
2104 /* We enable 8 traffic classes, DCB only */
2105 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2106 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
2107 break;
2108
2109 default:
Don Skidmoreee5f784a2009-11-06 12:56:20 +00002110 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002111 break;
2112 }
Don Skidmoreee5f784a2009-11-06 12:56:20 +00002113
2114 /* re-eable the arbiter */
2115 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2116 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002117 }
Auke Kok9a799d72007-09-15 14:07:45 -07002118}
2119
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002120#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
Auke Kok9a799d72007-09-15 14:07:45 -07002121
Yi Zoua6616b42009-08-06 13:05:23 +00002122static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
2123 struct ixgbe_ring *rx_ring)
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002124{
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002125 u32 srrctl;
Yi Zoua6616b42009-08-06 13:05:23 +00002126 int index;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002127 struct ixgbe_ring_feature *feature = adapter->ring_feature;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002128
Yi Zoua6616b42009-08-06 13:05:23 +00002129 index = rx_ring->reg_idx;
2130 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2131 unsigned long mask;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002132 mask = (unsigned long) feature[RING_F_RSS].mask;
Alexander Duyck3be1adf2008-08-30 00:29:10 -07002133 index = index & mask;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002134 }
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002135 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2136
2137 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2138 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
2139
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002140 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2141 IXGBE_SRRCTL_BSIZEHDR_MASK;
2142
Yi Zou6e455b8972009-08-06 13:05:44 +00002143 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002144#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2145 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2146#else
2147 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2148#endif
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002149 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002150 } else {
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002151 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2152 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002153 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002154 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002155
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002156 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2157}
2158
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002159static u32 ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
2160{
2161 u32 mrqc = 0;
2162 int mask;
2163
2164 if (!(adapter->hw.mac.type == ixgbe_mac_82599EB))
2165 return mrqc;
2166
2167 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
2168#ifdef CONFIG_IXGBE_DCB
2169 | IXGBE_FLAG_DCB_ENABLED
2170#endif
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002171 | IXGBE_FLAG_SRIOV_ENABLED
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002172 );
2173
2174 switch (mask) {
2175 case (IXGBE_FLAG_RSS_ENABLED):
2176 mrqc = IXGBE_MRQC_RSSEN;
2177 break;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002178 case (IXGBE_FLAG_SRIOV_ENABLED):
2179 mrqc = IXGBE_MRQC_VMDQEN;
2180 break;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002181#ifdef CONFIG_IXGBE_DCB
2182 case (IXGBE_FLAG_DCB_ENABLED):
2183 mrqc = IXGBE_MRQC_RT8TCEN;
2184 break;
2185#endif /* CONFIG_IXGBE_DCB */
2186 default:
2187 break;
2188 }
2189
2190 return mrqc;
2191}
2192
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002193/**
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002194 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2195 * @adapter: address of board private structure
2196 * @index: index of ring to set
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002197 **/
Mallikarjuna R Chilakalaedd2ea552009-11-23 10:45:11 -08002198static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, int index)
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002199{
2200 struct ixgbe_ring *rx_ring;
2201 struct ixgbe_hw *hw = &adapter->hw;
2202 int j;
2203 u32 rscctrl;
Mallikarjuna R Chilakalaedd2ea552009-11-23 10:45:11 -08002204 int rx_buf_len;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002205
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002206 rx_ring = adapter->rx_ring[index];
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002207 j = rx_ring->reg_idx;
Mallikarjuna R Chilakalaedd2ea552009-11-23 10:45:11 -08002208 rx_buf_len = rx_ring->rx_buf_len;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002209 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(j));
2210 rscctrl |= IXGBE_RSCCTL_RSCEN;
2211 /*
2212 * we must limit the number of descriptors so that the
2213 * total size of max desc * buf_len is not greater
2214 * than 65535
2215 */
2216 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
2217#if (MAX_SKB_FRAGS > 16)
2218 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2219#elif (MAX_SKB_FRAGS > 8)
2220 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2221#elif (MAX_SKB_FRAGS > 4)
2222 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2223#else
2224 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2225#endif
2226 } else {
2227 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2228 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2229 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2230 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2231 else
2232 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2233 }
2234 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(j), rscctrl);
2235}
2236
2237/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002238 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07002239 * @adapter: board private structure
2240 *
2241 * Configure the Rx unit of the MAC after a reset.
2242 **/
2243static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
2244{
2245 u64 rdba;
2246 struct ixgbe_hw *hw = &adapter->hw;
Yi Zoua6616b42009-08-06 13:05:23 +00002247 struct ixgbe_ring *rx_ring;
Auke Kok9a799d72007-09-15 14:07:45 -07002248 struct net_device *netdev = adapter->netdev;
2249 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002250 int i, j;
Auke Kok9a799d72007-09-15 14:07:45 -07002251 u32 rdlen, rxctrl, rxcsum;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002252 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
2253 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2254 0x6A3E67EA, 0x14364D17, 0x3BED200D};
Auke Kok9a799d72007-09-15 14:07:45 -07002255 u32 fctrl, hlreg0;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002256 u32 reta = 0, mrqc = 0;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002257 u32 rdrxctl;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002258 int rx_buf_len;
Auke Kok9a799d72007-09-15 14:07:45 -07002259
2260 /* Decide whether to use packet split mode or not */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002261 /* Do not use packet split if we're in SR-IOV Mode */
2262 if (!adapter->num_vfs)
2263 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
Auke Kok9a799d72007-09-15 14:07:45 -07002264
2265 /* Set the RX buffer length according to the mode */
2266 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002267 rx_buf_len = IXGBE_RX_HDR_SIZE;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002268 if (hw->mac.type == ixgbe_mac_82599EB) {
2269 /* PSRTYPE must be initialized in 82599 */
2270 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
2271 IXGBE_PSRTYPE_UDPHDR |
2272 IXGBE_PSRTYPE_IPV4HDR |
Yi Zoudfa12f02009-05-07 10:39:35 +00002273 IXGBE_PSRTYPE_IPV6HDR |
2274 IXGBE_PSRTYPE_L2HDR;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002275 IXGBE_WRITE_REG(hw,
2276 IXGBE_PSRTYPE(adapter->num_vfs),
2277 psrtype);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002278 }
Auke Kok9a799d72007-09-15 14:07:45 -07002279 } else {
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00002280 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
Alexander Duyckf8212f92009-04-27 22:42:37 +00002281 (netdev->mtu <= ETH_DATA_LEN))
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002282 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
Auke Kok9a799d72007-09-15 14:07:45 -07002283 else
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002284 rx_buf_len = ALIGN(max_frame, 1024);
Auke Kok9a799d72007-09-15 14:07:45 -07002285 }
2286
2287 fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL);
2288 fctrl |= IXGBE_FCTRL_BAM;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002289 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002290 fctrl |= IXGBE_FCTRL_PMCF;
Auke Kok9a799d72007-09-15 14:07:45 -07002291 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl);
2292
2293 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
2294 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2295 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
2296 else
2297 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
Yi Zou63f39bd2009-05-17 12:34:35 +00002298#ifdef IXGBE_FCOE
Yi Zouf34c5c82009-08-14 12:42:17 +00002299 if (netdev->features & NETIF_F_FCOE_MTU)
Yi Zou63f39bd2009-05-17 12:34:35 +00002300 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2301#endif
Auke Kok9a799d72007-09-15 14:07:45 -07002302 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
2303
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002304 rdlen = adapter->rx_ring[0]->count * sizeof(union ixgbe_adv_rx_desc);
Auke Kok9a799d72007-09-15 14:07:45 -07002305 /* disable receives while setting up the descriptors */
2306 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2307 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
2308
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002309 /*
2310 * Setup the HW Rx Head and Tail Descriptor Pointers and
2311 * the Base and Length of the Rx Descriptor Ring
2312 */
Auke Kok9a799d72007-09-15 14:07:45 -07002313 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002314 rx_ring = adapter->rx_ring[i];
Yi Zoua6616b42009-08-06 13:05:23 +00002315 rdba = rx_ring->dma;
2316 j = rx_ring->reg_idx;
Yang Hongyang284901a2009-04-06 19:01:15 -07002317 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_BIT_MASK(32)));
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002318 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32));
2319 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen);
2320 IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0);
2321 IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0);
Yi Zoua6616b42009-08-06 13:05:23 +00002322 rx_ring->head = IXGBE_RDH(j);
2323 rx_ring->tail = IXGBE_RDT(j);
2324 rx_ring->rx_buf_len = rx_buf_len;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002325
Yi Zou6e455b8972009-08-06 13:05:44 +00002326 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2327 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
Peter P Waskiewicz Jr1b3ff022009-09-14 07:47:27 +00002328 else
2329 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002330
Yi Zou63f39bd2009-05-17 12:34:35 +00002331#ifdef IXGBE_FCOE
Yi Zouf34c5c82009-08-14 12:42:17 +00002332 if (netdev->features & NETIF_F_FCOE_MTU) {
Yi Zou63f39bd2009-05-17 12:34:35 +00002333 struct ixgbe_ring_feature *f;
2334 f = &adapter->ring_feature[RING_F_FCOE];
Yi Zou6e455b8972009-08-06 13:05:44 +00002335 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2336 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2337 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2338 rx_ring->rx_buf_len =
2339 IXGBE_FCOE_JUMBO_FRAME_SIZE;
2340 }
Yi Zou63f39bd2009-05-17 12:34:35 +00002341 }
2342
2343#endif /* IXGBE_FCOE */
Yi Zoua6616b42009-08-06 13:05:23 +00002344 ixgbe_configure_srrctl(adapter, rx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07002345 }
2346
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002347 if (hw->mac.type == ixgbe_mac_82598EB) {
2348 /*
2349 * For VMDq support of different descriptor types or
2350 * buffer sizes through the use of multiple SRRCTL
2351 * registers, RDRXCTL.MVMEN must be set to 1
2352 *
2353 * also, the manual doesn't mention it clearly but DCA hints
2354 * will only use queue 0's tags unless this bit is set. Side
2355 * effects of setting this bit are only that SRRCTL must be
2356 * fully programmed [0..15]
2357 */
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00002358 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2359 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2360 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
Alexander Duyck2f90b862008-11-20 20:52:10 -08002361 }
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002362
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002363 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
2364 u32 vt_reg_bits;
2365 u32 reg_offset, vf_shift;
2366 u32 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2367 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN
2368 | IXGBE_VT_CTL_REPLEN;
2369 vt_reg_bits |= (adapter->num_vfs <<
2370 IXGBE_VT_CTL_POOL_SHIFT);
2371 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
2372 IXGBE_WRITE_REG(hw, IXGBE_MRQC, 0);
2373
2374 vf_shift = adapter->num_vfs % 32;
2375 reg_offset = adapter->num_vfs / 32;
2376 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
2377 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
2378 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
2379 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
2380 /* Enable only the PF's pool for Tx/Rx */
2381 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
2382 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
2383 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2384 ixgbe_set_vmolr(hw, adapter->num_vfs);
2385 }
2386
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002387 /* Program MRQC for the distribution of queues */
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002388 mrqc = ixgbe_setup_mrqc(adapter);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002389
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002390 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Auke Kok9a799d72007-09-15 14:07:45 -07002391 /* Fill out redirection table */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002392 for (i = 0, j = 0; i < 128; i++, j++) {
2393 if (j == adapter->ring_feature[RING_F_RSS].indices)
2394 j = 0;
2395 /* reta = 4-byte sliding window of
2396 * 0x00..(indices-1)(indices-1)00..etc. */
2397 reta = (reta << 8) | (j * 0x11);
2398 if ((i & 3) == 3)
2399 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
Auke Kok9a799d72007-09-15 14:07:45 -07002400 }
2401
2402 /* Fill out hash function seeds */
2403 for (i = 0; i < 10; i++)
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002404 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07002405
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00002406 if (hw->mac.type == ixgbe_mac_82598EB)
2407 mrqc |= IXGBE_MRQC_RSSEN;
Auke Kok9a799d72007-09-15 14:07:45 -07002408 /* Perform hash on these packet types */
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00002409 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2410 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2411 | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
2412 | IXGBE_MRQC_RSS_FIELD_IPV6
2413 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
2414 | IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
Auke Kok9a799d72007-09-15 14:07:45 -07002415 }
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00002416 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002417
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002418 if (adapter->num_vfs) {
2419 u32 reg;
2420
2421 /* Map PF MAC address in RAR Entry 0 to first pool
2422 * following VFs */
2423 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
2424
2425 /* Set up VF register offsets for selected VT Mode, i.e.
2426 * 64 VFs for SR-IOV */
2427 reg = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
2428 reg |= IXGBE_GCR_EXT_SRIOV;
2429 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, reg);
2430 }
2431
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002432 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2433
2434 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED ||
2435 adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) {
2436 /* Disable indicating checksum in descriptor, enables
2437 * RSS hash */
2438 rxcsum |= IXGBE_RXCSUM_PCSD;
2439 }
2440 if (!(rxcsum & IXGBE_RXCSUM_PCSD)) {
2441 /* Enable IPv4 payload checksum for UDP fragments
2442 * if PCSD is not set */
2443 rxcsum |= IXGBE_RXCSUM_IPPCSE;
2444 }
2445
2446 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002447
2448 if (hw->mac.type == ixgbe_mac_82599EB) {
2449 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2450 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
Alexander Duyckf8212f92009-04-27 22:42:37 +00002451 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002452 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2453 }
Alexander Duyckf8212f92009-04-27 22:42:37 +00002454
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00002455 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00002456 /* Enable 82599 HW-RSC */
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002457 for (i = 0; i < adapter->num_rx_queues; i++)
Mallikarjuna R Chilakalaedd2ea552009-11-23 10:45:11 -08002458 ixgbe_configure_rscctl(adapter, i);
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002459
Alexander Duyckf8212f92009-04-27 22:42:37 +00002460 /* Disable RSC for ACK packets */
2461 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2462 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2463 }
Auke Kok9a799d72007-09-15 14:07:45 -07002464}
2465
Auke Kok9a799d72007-09-15 14:07:45 -07002466static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2467{
2468 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002469 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose1ada1b12010-01-22 22:45:43 +00002470 int pool_ndx = adapter->num_vfs;
Auke Kok9a799d72007-09-15 14:07:45 -07002471
2472 /* add VID to filter table */
Greg Rose1ada1b12010-01-22 22:45:43 +00002473 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
Auke Kok9a799d72007-09-15 14:07:45 -07002474}
2475
2476static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2477{
2478 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002479 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose1ada1b12010-01-22 22:45:43 +00002480 int pool_ndx = adapter->num_vfs;
Auke Kok9a799d72007-09-15 14:07:45 -07002481
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08002482 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2483 ixgbe_irq_disable(adapter);
2484
Auke Kok9a799d72007-09-15 14:07:45 -07002485 vlan_group_set_device(adapter->vlgrp, vid, NULL);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08002486
2487 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2488 ixgbe_irq_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002489
2490 /* remove VID from filter table */
Greg Rose1ada1b12010-01-22 22:45:43 +00002491 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
Auke Kok9a799d72007-09-15 14:07:45 -07002492}
2493
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002494/**
2495 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
2496 * @adapter: driver data
2497 */
2498static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
2499{
2500 struct ixgbe_hw *hw = &adapter->hw;
2501 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2502 int i, j;
2503
2504 switch (hw->mac.type) {
2505 case ixgbe_mac_82598EB:
2506 vlnctrl &= ~(IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE);
2507 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2508 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2509 break;
2510 case ixgbe_mac_82599EB:
2511 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
2512 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2513 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2514 for (i = 0; i < adapter->num_rx_queues; i++) {
2515 j = adapter->rx_ring[i]->reg_idx;
2516 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2517 vlnctrl &= ~IXGBE_RXDCTL_VME;
2518 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
2519 }
2520 break;
2521 default:
2522 break;
2523 }
2524}
2525
2526/**
2527 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
2528 * @adapter: driver data
2529 */
2530static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
2531{
2532 struct ixgbe_hw *hw = &adapter->hw;
2533 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2534 int i, j;
2535
2536 switch (hw->mac.type) {
2537 case ixgbe_mac_82598EB:
2538 vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
2539 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2540 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2541 break;
2542 case ixgbe_mac_82599EB:
2543 vlnctrl |= IXGBE_VLNCTRL_VFE;
2544 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2545 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2546 for (i = 0; i < adapter->num_rx_queues; i++) {
2547 j = adapter->rx_ring[i]->reg_idx;
2548 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2549 vlnctrl |= IXGBE_RXDCTL_VME;
2550 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
2551 }
2552 break;
2553 default:
2554 break;
2555 }
2556}
2557
Don Skidmore068c89b2009-01-19 16:54:36 -08002558static void ixgbe_vlan_rx_register(struct net_device *netdev,
2559 struct vlan_group *grp)
2560{
2561 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Don Skidmore068c89b2009-01-19 16:54:36 -08002562
2563 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2564 ixgbe_irq_disable(adapter);
2565 adapter->vlgrp = grp;
2566
2567 /*
2568 * For a DCB driver, always enable VLAN tag stripping so we can
2569 * still receive traffic from a DCB-enabled host even if we're
2570 * not in DCB mode.
2571 */
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002572 ixgbe_vlan_filter_enable(adapter);
Alexander Duyckdc63d372009-11-23 06:32:57 +00002573
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002574 ixgbe_vlan_rx_add_vid(netdev, 0);
Don Skidmore068c89b2009-01-19 16:54:36 -08002575
2576 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2577 ixgbe_irq_enable(adapter);
2578}
2579
Auke Kok9a799d72007-09-15 14:07:45 -07002580static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
2581{
2582 ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2583
2584 if (adapter->vlgrp) {
2585 u16 vid;
2586 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2587 if (!vlan_group_get_device(adapter->vlgrp, vid))
2588 continue;
2589 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
2590 }
2591 }
2592}
2593
2594/**
Christopher Leech2c5645c2008-08-26 04:27:02 -07002595 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
Auke Kok9a799d72007-09-15 14:07:45 -07002596 * @netdev: network interface device structure
2597 *
Christopher Leech2c5645c2008-08-26 04:27:02 -07002598 * The set_rx_method entry point is called whenever the unicast/multicast
2599 * address list or the network interface flags are updated. This routine is
2600 * responsible for configuring the hardware for proper unicast, multicast and
2601 * promiscuous mode.
Auke Kok9a799d72007-09-15 14:07:45 -07002602 **/
Greg Rose7f870472010-01-09 02:25:29 +00002603void ixgbe_set_rx_mode(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07002604{
2605 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2606 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002607 u32 fctrl;
Auke Kok9a799d72007-09-15 14:07:45 -07002608
2609 /* Check for Promiscuous and All Multicast modes */
2610
2611 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
2612
2613 if (netdev->flags & IFF_PROMISC) {
Christopher Leech2c5645c2008-08-26 04:27:02 -07002614 hw->addr_ctrl.user_set_promisc = 1;
Auke Kok9a799d72007-09-15 14:07:45 -07002615 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002616 /* don't hardware filter vlans in promisc mode */
2617 ixgbe_vlan_filter_disable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002618 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07002619 if (netdev->flags & IFF_ALLMULTI) {
2620 fctrl |= IXGBE_FCTRL_MPE;
2621 fctrl &= ~IXGBE_FCTRL_UPE;
2622 } else {
2623 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2624 }
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002625 ixgbe_vlan_filter_enable(adapter);
Christopher Leech2c5645c2008-08-26 04:27:02 -07002626 hw->addr_ctrl.user_set_promisc = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002627 }
2628
2629 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
2630
Christopher Leech2c5645c2008-08-26 04:27:02 -07002631 /* reprogram secondary unicast list */
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08002632 hw->mac.ops.update_uc_addr_list(hw, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002633
Christopher Leech2c5645c2008-08-26 04:27:02 -07002634 /* reprogram multicast list */
Jiri Pirko2853eb82010-03-23 22:58:01 +00002635 hw->mac.ops.update_mc_addr_list(hw, netdev);
2636
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002637 if (adapter->num_vfs)
2638 ixgbe_restore_vf_multicasts(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002639}
2640
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002641static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
2642{
2643 int q_idx;
2644 struct ixgbe_q_vector *q_vector;
2645 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2646
2647 /* legacy and MSI only use one vector */
2648 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2649 q_vectors = 1;
2650
2651 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
Jesse Brandeburgf0848272008-09-11 19:59:42 -07002652 struct napi_struct *napi;
Alexander Duyck7a921c92009-05-06 10:43:28 +00002653 q_vector = adapter->q_vector[q_idx];
Jesse Brandeburgf0848272008-09-11 19:59:42 -07002654 napi = &q_vector->napi;
Alexander Duyck91281fd2009-06-04 16:00:27 +00002655 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2656 if (!q_vector->rxr_count || !q_vector->txr_count) {
2657 if (q_vector->txr_count == 1)
2658 napi->poll = &ixgbe_clean_txonly;
2659 else if (q_vector->rxr_count == 1)
2660 napi->poll = &ixgbe_clean_rxonly;
2661 }
2662 }
Jesse Brandeburgf0848272008-09-11 19:59:42 -07002663
2664 napi_enable(napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002665 }
2666}
2667
2668static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
2669{
2670 int q_idx;
2671 struct ixgbe_q_vector *q_vector;
2672 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2673
2674 /* legacy and MSI only use one vector */
2675 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2676 q_vectors = 1;
2677
2678 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00002679 q_vector = adapter->q_vector[q_idx];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002680 napi_disable(&q_vector->napi);
2681 }
2682}
2683
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08002684#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08002685/*
2686 * ixgbe_configure_dcb - Configure DCB hardware
2687 * @adapter: ixgbe adapter struct
2688 *
2689 * This is called by the driver on open to configure the DCB hardware.
2690 * This is also called by the gennetlink interface when reconfiguring
2691 * the DCB state.
2692 */
2693static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
2694{
2695 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002696 u32 txdctl;
Alexander Duyck2f90b862008-11-20 20:52:10 -08002697 int i, j;
2698
2699 ixgbe_dcb_check_config(&adapter->dcb_cfg);
2700 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG);
2701 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG);
2702
2703 /* reconfigure the hardware */
2704 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
2705
2706 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002707 j = adapter->tx_ring[i]->reg_idx;
Alexander Duyck2f90b862008-11-20 20:52:10 -08002708 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2709 /* PThresh workaround for Tx hang with DFP enabled. */
2710 txdctl |= 32;
2711 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
2712 }
2713 /* Enable VLAN tag insert/strip */
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07002714 ixgbe_vlan_filter_enable(adapter);
2715
Alexander Duyck2f90b862008-11-20 20:52:10 -08002716 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
2717}
2718
2719#endif
Auke Kok9a799d72007-09-15 14:07:45 -07002720static void ixgbe_configure(struct ixgbe_adapter *adapter)
2721{
2722 struct net_device *netdev = adapter->netdev;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00002723 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07002724 int i;
2725
Christopher Leech2c5645c2008-08-26 04:27:02 -07002726 ixgbe_set_rx_mode(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002727
2728 ixgbe_restore_vlan(adapter);
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08002729#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08002730 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Yi Zoub352e402009-11-06 12:55:38 +00002731 if (hw->mac.type == ixgbe_mac_82598EB)
2732 netif_set_gso_max_size(netdev, 32768);
2733 else
2734 netif_set_gso_max_size(netdev, 65536);
Alexander Duyck2f90b862008-11-20 20:52:10 -08002735 ixgbe_configure_dcb(adapter);
2736 } else {
2737 netif_set_gso_max_size(netdev, 65536);
2738 }
2739#else
2740 netif_set_gso_max_size(netdev, 65536);
2741#endif
Auke Kok9a799d72007-09-15 14:07:45 -07002742
Yi Zoueacd73f2009-05-13 13:11:06 +00002743#ifdef IXGBE_FCOE
2744 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
2745 ixgbe_configure_fcoe(adapter);
2746
2747#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00002748 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
2749 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002750 adapter->tx_ring[i]->atr_sample_rate =
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00002751 adapter->atr_sample_rate;
2752 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
2753 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
2754 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
2755 }
2756
Auke Kok9a799d72007-09-15 14:07:45 -07002757 ixgbe_configure_tx(adapter);
2758 ixgbe_configure_rx(adapter);
2759 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002760 ixgbe_alloc_rx_buffers(adapter, adapter->rx_ring[i],
2761 (adapter->rx_ring[i]->count - 1));
Auke Kok9a799d72007-09-15 14:07:45 -07002762}
2763
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002764static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
2765{
2766 switch (hw->phy.type) {
2767 case ixgbe_phy_sfp_avago:
2768 case ixgbe_phy_sfp_ftl:
2769 case ixgbe_phy_sfp_intel:
2770 case ixgbe_phy_sfp_unknown:
2771 case ixgbe_phy_tw_tyco:
2772 case ixgbe_phy_tw_unknown:
2773 return true;
2774 default:
2775 return false;
2776 }
2777}
2778
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002779/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002780 * ixgbe_sfp_link_config - set up SFP+ link
2781 * @adapter: pointer to private adapter struct
2782 **/
2783static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
2784{
2785 struct ixgbe_hw *hw = &adapter->hw;
2786
2787 if (hw->phy.multispeed_fiber) {
2788 /*
2789 * In multispeed fiber setups, the device may not have
2790 * had a physical connection when the driver loaded.
2791 * If that's the case, the initial link configuration
2792 * couldn't get the MAC into 10G or 1G mode, so we'll
2793 * never have a link status change interrupt fire.
2794 * We need to try and force an autonegotiation
2795 * session, then bring up link.
2796 */
2797 hw->mac.ops.setup_sfp(hw);
2798 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
2799 schedule_work(&adapter->multispeed_fiber_task);
2800 } else {
2801 /*
2802 * Direct Attach Cu and non-multispeed fiber modules
2803 * still need to be configured properly prior to
2804 * attempting link.
2805 */
2806 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
2807 schedule_work(&adapter->sfp_config_module_task);
2808 }
2809}
2810
2811/**
2812 * ixgbe_non_sfp_link_config - set up non-SFP+ link
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002813 * @hw: pointer to private hardware struct
2814 *
2815 * Returns 0 on success, negative on failure
2816 **/
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002817static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002818{
2819 u32 autoneg;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00002820 bool negotiation, link_up = false;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002821 u32 ret = IXGBE_ERR_LINK_SETUP;
2822
2823 if (hw->mac.ops.check_link)
2824 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
2825
2826 if (ret)
2827 goto link_cfg_out;
2828
2829 if (hw->mac.ops.get_link_capabilities)
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00002830 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002831 if (ret)
2832 goto link_cfg_out;
2833
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00002834 if (hw->mac.ops.setup_link)
2835 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002836link_cfg_out:
2837 return ret;
2838}
2839
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002840#define IXGBE_MAX_RX_DESC_POLL 10
2841static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
2842 int rxr)
2843{
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002844 int j = adapter->rx_ring[rxr]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002845 int k;
2846
2847 for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
2848 if (IXGBE_READ_REG(&adapter->hw,
2849 IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
2850 break;
2851 else
2852 msleep(1);
2853 }
2854 if (k >= IXGBE_MAX_RX_DESC_POLL) {
2855 DPRINTK(DRV, ERR, "RXDCTL.ENABLE on Rx queue %d "
2856 "not set within the polling period\n", rxr);
2857 }
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002858 ixgbe_release_rx_desc(&adapter->hw, adapter->rx_ring[rxr],
2859 (adapter->rx_ring[rxr]->count - 1));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002860}
2861
Auke Kok9a799d72007-09-15 14:07:45 -07002862static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
2863{
2864 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07002865 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002866 int i, j = 0;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002867 int num_rx_rings = adapter->num_rx_queues;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002868 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07002869 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002870 u32 txdctl, rxdctl, mhadd;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002871 u32 dmatxctl;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002872 u32 gpie;
Greg Rosec9205692010-01-22 22:46:22 +00002873 u32 ctrl_ext;
Auke Kok9a799d72007-09-15 14:07:45 -07002874
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08002875 ixgbe_get_hw_control(adapter);
2876
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002877 if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) ||
2878 (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) {
Auke Kok9a799d72007-09-15 14:07:45 -07002879 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2880 gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002881 IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD);
Auke Kok9a799d72007-09-15 14:07:45 -07002882 } else {
2883 /* MSI only */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002884 gpie = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002885 }
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002886 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
2887 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
2888 gpie |= IXGBE_GPIE_VTMODE_64;
2889 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002890 /* XXX: to interrupt immediately for EICS writes, enable this */
2891 /* gpie |= IXGBE_GPIE_EIMEN; */
2892 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2893 }
2894
Jesse Brandeburg9b471442009-12-03 11:33:54 +00002895 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2896 /*
2897 * use EIAM to auto-mask when MSI-X interrupt is asserted
2898 * this saves a register write for every interrupt
2899 */
2900 switch (hw->mac.type) {
2901 case ixgbe_mac_82598EB:
2902 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
2903 break;
2904 default:
2905 case ixgbe_mac_82599EB:
2906 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
2907 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
2908 break;
2909 }
2910 } else {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002911 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
2912 * specifically only auto mask tx and rx interrupts */
2913 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07002914 }
2915
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002916 /* Enable fan failure interrupt if media type is copper */
2917 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
2918 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
2919 gpie |= IXGBE_SDP1_GPIEN;
2920 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2921 }
2922
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002923 if (hw->mac.type == ixgbe_mac_82599EB) {
2924 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
2925 gpie |= IXGBE_SDP1_GPIEN;
2926 gpie |= IXGBE_SDP2_GPIEN;
2927 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2928 }
2929
Yi Zou63f39bd2009-05-17 12:34:35 +00002930#ifdef IXGBE_FCOE
2931 /* adjust max frame to be able to do baby jumbo for FCoE */
Yi Zouf34c5c82009-08-14 12:42:17 +00002932 if ((netdev->features & NETIF_F_FCOE_MTU) &&
Yi Zou63f39bd2009-05-17 12:34:35 +00002933 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2934 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
2935
2936#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -07002937 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
Auke Kok9a799d72007-09-15 14:07:45 -07002938 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2939 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2940 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2941
2942 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2943 }
2944
2945 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002946 j = adapter->tx_ring[i]->reg_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002947 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
Jesse Brandeburgef021192010-04-27 01:37:41 +00002948 if (adapter->rx_itr_setting == 0) {
2949 /* cannot set wthresh when itr==0 */
2950 txdctl &= ~0x007F0000;
2951 } else {
2952 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2953 txdctl |= (8 << 16);
2954 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002955 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
2956 }
2957
2958 if (hw->mac.type == ixgbe_mac_82599EB) {
2959 /* DMATXCTL.EN must be set after all Tx queue config is done */
2960 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2961 dmatxctl |= IXGBE_DMATXCTL_TE;
2962 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2963 }
2964 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002965 j = adapter->tx_ring[i]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002966 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
Auke Kok9a799d72007-09-15 14:07:45 -07002967 txdctl |= IXGBE_TXDCTL_ENABLE;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002968 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002969 if (hw->mac.type == ixgbe_mac_82599EB) {
2970 int wait_loop = 10;
2971 /* poll for Tx Enable ready */
2972 do {
2973 msleep(1);
2974 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2975 } while (--wait_loop &&
2976 !(txdctl & IXGBE_TXDCTL_ENABLE));
2977 if (!wait_loop)
2978 DPRINTK(DRV, ERR, "Could not enable "
2979 "Tx Queue %d\n", j);
2980 }
Auke Kok9a799d72007-09-15 14:07:45 -07002981 }
2982
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002983 for (i = 0; i < num_rx_rings; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002984 j = adapter->rx_ring[i]->reg_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002985 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2986 /* enable PTHRESH=32 descriptors (half the internal cache)
2987 * and HTHRESH=0 descriptors (to minimize latency on fetch),
2988 * this also removes a pesky rx_no_buffer_count increment */
2989 rxdctl |= 0x0020;
Auke Kok9a799d72007-09-15 14:07:45 -07002990 rxdctl |= IXGBE_RXDCTL_ENABLE;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002991 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002992 if (hw->mac.type == ixgbe_mac_82599EB)
2993 ixgbe_rx_desc_queue_enable(adapter, i);
Auke Kok9a799d72007-09-15 14:07:45 -07002994 }
2995 /* enable all receives */
2996 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002997 if (hw->mac.type == ixgbe_mac_82598EB)
2998 rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN);
2999 else
3000 rxdctl |= IXGBE_RXCTRL_RXEN;
3001 hw->mac.ops.enable_rx_dma(hw, rxdctl);
Auke Kok9a799d72007-09-15 14:07:45 -07003002
3003 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3004 ixgbe_configure_msix(adapter);
3005 else
3006 ixgbe_configure_msi_and_legacy(adapter);
3007
Peter Waskiewicz61fac742010-04-27 00:38:15 +00003008 /* enable the optics */
3009 if (hw->phy.multispeed_fiber)
3010 hw->mac.ops.enable_tx_laser(hw);
3011
Auke Kok9a799d72007-09-15 14:07:45 -07003012 clear_bit(__IXGBE_DOWN, &adapter->state);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003013 ixgbe_napi_enable_all(adapter);
3014
3015 /* clear any pending interrupts, may auto mask */
3016 IXGBE_READ_REG(hw, IXGBE_EICR);
3017
Auke Kok9a799d72007-09-15 14:07:45 -07003018 ixgbe_irq_enable(adapter);
3019
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003020 /*
Don Skidmorebf069c92009-05-07 10:39:54 +00003021 * If this adapter has a fan, check to see if we had a failure
3022 * before we enabled the interrupt.
3023 */
3024 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3025 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3026 if (esdp & IXGBE_ESDP_SDP1)
3027 DPRINTK(DRV, CRIT,
3028 "Fan has stopped, replace the adapter\n");
3029 }
3030
3031 /*
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003032 * For hot-pluggable SFP+ devices, a new SFP+ module may have
Don Skidmore19343de2009-07-02 12:50:31 +00003033 * arrived before interrupts were enabled but after probe. Such
3034 * devices wouldn't have their type identified yet. We need to
3035 * kick off the SFP+ module setup first, then try to bring up link.
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003036 * If we're not hot-pluggable SFP+, we just need to configure link
3037 * and bring it up.
3038 */
Don Skidmore19343de2009-07-02 12:50:31 +00003039 if (hw->phy.type == ixgbe_phy_unknown) {
3040 err = hw->phy.ops.identify(hw);
3041 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore5da43c1a2009-07-02 12:50:52 +00003042 /*
3043 * Take the device down and schedule the sfp tasklet
3044 * which will unregister_netdev and log it.
3045 */
Don Skidmore19343de2009-07-02 12:50:31 +00003046 ixgbe_down(adapter);
Don Skidmore5da43c1a2009-07-02 12:50:52 +00003047 schedule_work(&adapter->sfp_config_module_task);
Don Skidmore19343de2009-07-02 12:50:31 +00003048 return err;
3049 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003050 }
3051
3052 if (ixgbe_is_sfp(hw)) {
3053 ixgbe_sfp_link_config(adapter);
3054 } else {
3055 err = ixgbe_non_sfp_link_config(hw);
3056 if (err)
3057 DPRINTK(PROBE, ERR, "link_config FAILED %d\n", err);
3058 }
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003059
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003060 for (i = 0; i < adapter->num_tx_queues; i++)
3061 set_bit(__IXGBE_FDIR_INIT_DONE,
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003062 &(adapter->tx_ring[i]->reinit_state));
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003063
Peter P Waskiewicz Jr1da100b2009-01-19 16:55:03 -08003064 /* enable transmits */
3065 netif_tx_start_all_queues(netdev);
3066
Auke Kok9a799d72007-09-15 14:07:45 -07003067 /* bring the link up in the watchdog, this could race with our first
3068 * link up interrupt but shouldn't be a problem */
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003069 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
3070 adapter->link_check_timeout = jiffies;
Auke Kok9a799d72007-09-15 14:07:45 -07003071 mod_timer(&adapter->watchdog_timer, jiffies);
Greg Rosec9205692010-01-22 22:46:22 +00003072
3073 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3074 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
3075 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
3076 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
3077
Auke Kok9a799d72007-09-15 14:07:45 -07003078 return 0;
3079}
3080
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003081void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
3082{
3083 WARN_ON(in_interrupt());
3084 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
3085 msleep(1);
3086 ixgbe_down(adapter);
Greg Rose5809a1a2010-03-24 09:36:08 +00003087 /*
3088 * If SR-IOV enabled then wait a bit before bringing the adapter
3089 * back up to give the VFs time to respond to the reset. The
3090 * two second wait is based upon the watchdog timer cycle in
3091 * the VF driver.
3092 */
3093 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3094 msleep(2000);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003095 ixgbe_up(adapter);
3096 clear_bit(__IXGBE_RESETTING, &adapter->state);
3097}
3098
Auke Kok9a799d72007-09-15 14:07:45 -07003099int ixgbe_up(struct ixgbe_adapter *adapter)
3100{
3101 /* hardware has been reset, we need to reload some things */
3102 ixgbe_configure(adapter);
3103
3104 return ixgbe_up_complete(adapter);
3105}
3106
3107void ixgbe_reset(struct ixgbe_adapter *adapter)
3108{
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003109 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore8ca783a2009-05-26 20:40:47 -07003110 int err;
3111
3112 err = hw->mac.ops.init_hw(hw);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003113 switch (err) {
3114 case 0:
3115 case IXGBE_ERR_SFP_NOT_PRESENT:
3116 break;
3117 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
3118 dev_err(&adapter->pdev->dev, "master disable timed out\n");
3119 break;
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00003120 case IXGBE_ERR_EEPROM_VERSION:
3121 /* We are running on a pre-production device, log a warning */
3122 dev_warn(&adapter->pdev->dev, "This device is a pre-production "
3123 "adapter/LOM. Please be aware there may be issues "
3124 "associated with your hardware. If you are "
3125 "experiencing problems please contact your Intel or "
3126 "hardware representative who provided you with this "
3127 "hardware.\n");
3128 break;
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003129 default:
3130 dev_err(&adapter->pdev->dev, "Hardware Error: %d\n", err);
3131 }
Auke Kok9a799d72007-09-15 14:07:45 -07003132
3133 /* reprogram the RAR[0] in case user changed it. */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003134 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
3135 IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07003136}
3137
Auke Kok9a799d72007-09-15 14:07:45 -07003138/**
3139 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
3140 * @adapter: board private structure
3141 * @rx_ring: ring to free buffers from
3142 **/
3143static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003144 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003145{
3146 struct pci_dev *pdev = adapter->pdev;
3147 unsigned long size;
3148 unsigned int i;
3149
3150 /* Free all the Rx ring sk_buffs */
3151
3152 for (i = 0; i < rx_ring->count; i++) {
3153 struct ixgbe_rx_buffer *rx_buffer_info;
3154
3155 rx_buffer_info = &rx_ring->rx_buffer_info[i];
3156 if (rx_buffer_info->dma) {
3157 pci_unmap_single(pdev, rx_buffer_info->dma,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003158 rx_ring->rx_buf_len,
3159 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07003160 rx_buffer_info->dma = 0;
3161 }
3162 if (rx_buffer_info->skb) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00003163 struct sk_buff *skb = rx_buffer_info->skb;
Auke Kok9a799d72007-09-15 14:07:45 -07003164 rx_buffer_info->skb = NULL;
Alexander Duyckf8212f92009-04-27 22:42:37 +00003165 do {
3166 struct sk_buff *this = skb;
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00003167 if (IXGBE_RSC_CB(this)->dma) {
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00003168 pci_unmap_single(pdev, IXGBE_RSC_CB(this)->dma,
3169 rx_ring->rx_buf_len,
3170 PCI_DMA_FROMDEVICE);
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00003171 IXGBE_RSC_CB(this)->dma = 0;
3172 }
Alexander Duyckf8212f92009-04-27 22:42:37 +00003173 skb = skb->prev;
3174 dev_kfree_skb(this);
3175 } while (skb);
Auke Kok9a799d72007-09-15 14:07:45 -07003176 }
3177 if (!rx_buffer_info->page)
3178 continue;
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +00003179 if (rx_buffer_info->page_dma) {
3180 pci_unmap_page(pdev, rx_buffer_info->page_dma,
3181 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
3182 rx_buffer_info->page_dma = 0;
3183 }
Auke Kok9a799d72007-09-15 14:07:45 -07003184 put_page(rx_buffer_info->page);
3185 rx_buffer_info->page = NULL;
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07003186 rx_buffer_info->page_offset = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003187 }
3188
3189 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
3190 memset(rx_ring->rx_buffer_info, 0, size);
3191
3192 /* Zero out the descriptor ring */
3193 memset(rx_ring->desc, 0, rx_ring->size);
3194
3195 rx_ring->next_to_clean = 0;
3196 rx_ring->next_to_use = 0;
3197
Jesse Brandeburg9891ca72009-03-13 22:14:50 +00003198 if (rx_ring->head)
3199 writel(0, adapter->hw.hw_addr + rx_ring->head);
3200 if (rx_ring->tail)
3201 writel(0, adapter->hw.hw_addr + rx_ring->tail);
Auke Kok9a799d72007-09-15 14:07:45 -07003202}
3203
3204/**
3205 * ixgbe_clean_tx_ring - Free Tx Buffers
3206 * @adapter: board private structure
3207 * @tx_ring: ring to be cleaned
3208 **/
3209static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003210 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003211{
3212 struct ixgbe_tx_buffer *tx_buffer_info;
3213 unsigned long size;
3214 unsigned int i;
3215
3216 /* Free all the Tx ring sk_buffs */
3217
3218 for (i = 0; i < tx_ring->count; i++) {
3219 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3220 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3221 }
3222
3223 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
3224 memset(tx_ring->tx_buffer_info, 0, size);
3225
3226 /* Zero out the descriptor ring */
3227 memset(tx_ring->desc, 0, tx_ring->size);
3228
3229 tx_ring->next_to_use = 0;
3230 tx_ring->next_to_clean = 0;
3231
Jesse Brandeburg9891ca72009-03-13 22:14:50 +00003232 if (tx_ring->head)
3233 writel(0, adapter->hw.hw_addr + tx_ring->head);
3234 if (tx_ring->tail)
3235 writel(0, adapter->hw.hw_addr + tx_ring->tail);
Auke Kok9a799d72007-09-15 14:07:45 -07003236}
3237
3238/**
Auke Kok9a799d72007-09-15 14:07:45 -07003239 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
3240 * @adapter: board private structure
3241 **/
3242static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
3243{
3244 int i;
3245
3246 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003247 ixgbe_clean_rx_ring(adapter, adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07003248}
3249
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003250/**
3251 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
3252 * @adapter: board private structure
3253 **/
3254static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
3255{
3256 int i;
3257
3258 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003259 ixgbe_clean_tx_ring(adapter, adapter->tx_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003260}
3261
Auke Kok9a799d72007-09-15 14:07:45 -07003262void ixgbe_down(struct ixgbe_adapter *adapter)
3263{
3264 struct net_device *netdev = adapter->netdev;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003265 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003266 u32 rxctrl;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003267 u32 txdctl;
3268 int i, j;
Auke Kok9a799d72007-09-15 14:07:45 -07003269
3270 /* signal that we are down to the interrupt handler */
3271 set_bit(__IXGBE_DOWN, &adapter->state);
3272
Peter Waskiewicz61fac742010-04-27 00:38:15 +00003273 /* power down the optics */
3274 if (hw->phy.multispeed_fiber)
3275 hw->mac.ops.disable_tx_laser(hw);
3276
Greg Rose767081a2010-01-22 22:46:40 +00003277 /* disable receive for all VFs and wait one second */
3278 if (adapter->num_vfs) {
Greg Rose767081a2010-01-22 22:46:40 +00003279 /* ping all the active vfs to let them know we are going down */
3280 ixgbe_ping_all_vfs(adapter);
Greg Rose581d1aa2010-03-24 09:36:27 +00003281
Greg Rose767081a2010-01-22 22:46:40 +00003282 /* Disable all VFTE/VFRE TX/RX */
3283 ixgbe_disable_tx_rx(adapter);
Greg Rose581d1aa2010-03-24 09:36:27 +00003284
3285 /* Mark all the VFs as inactive */
3286 for (i = 0 ; i < adapter->num_vfs; i++)
3287 adapter->vfinfo[i].clear_to_send = 0;
Greg Rose767081a2010-01-22 22:46:40 +00003288 }
3289
Auke Kok9a799d72007-09-15 14:07:45 -07003290 /* disable receives */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003291 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3292 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
Auke Kok9a799d72007-09-15 14:07:45 -07003293
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003294 IXGBE_WRITE_FLUSH(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07003295 msleep(10);
3296
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003297 netif_tx_stop_all_queues(netdev);
3298
Don Skidmore0a1f87c2009-09-18 09:45:43 +00003299 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3300 del_timer_sync(&adapter->sfp_timer);
Auke Kok9a799d72007-09-15 14:07:45 -07003301 del_timer_sync(&adapter->watchdog_timer);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003302 cancel_work_sync(&adapter->watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07003303
John Fastabendc0dfb902010-04-27 02:13:39 +00003304 netif_carrier_off(netdev);
3305 netif_tx_disable(netdev);
3306
3307 ixgbe_irq_disable(adapter);
3308
3309 ixgbe_napi_disable_all(adapter);
3310
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003311 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3312 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3313 cancel_work_sync(&adapter->fdir_reinit_task);
3314
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003315 /* disable transmits in the hardware now that interrupts are off */
3316 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003317 j = adapter->tx_ring[i]->reg_idx;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003318 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3319 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
3320 (txdctl & ~IXGBE_TXDCTL_ENABLE));
3321 }
PJ Waskiewicz88512532009-03-13 22:15:10 +00003322 /* Disable the Tx DMA engine on 82599 */
3323 if (hw->mac.type == ixgbe_mac_82599EB)
3324 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
3325 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3326 ~IXGBE_DMATXCTL_TE));
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003327
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00003328 /* clear n-tuple filters that are cached */
3329 ethtool_ntuple_flush(netdev);
3330
Paul Larson6f4a0e42008-06-24 17:00:56 -07003331 if (!pci_channel_offline(adapter->pdev))
3332 ixgbe_reset(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003333 ixgbe_clean_all_tx_rings(adapter);
3334 ixgbe_clean_all_rx_rings(adapter);
3335
Jeff Garzik5dd2d332008-10-16 05:09:31 -04003336#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07003337 /* since we reset the hardware DCA settings were cleared */
Alexander Duycke35ec122009-05-21 13:07:12 +00003338 ixgbe_setup_dca(adapter);
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07003339#endif
Auke Kok9a799d72007-09-15 14:07:45 -07003340}
3341
Auke Kok9a799d72007-09-15 14:07:45 -07003342/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003343 * ixgbe_poll - NAPI Rx polling callback
3344 * @napi: structure for representing this polling device
3345 * @budget: how many packets driver is allowed to clean
3346 *
3347 * This function is used for legacy and MSI, NAPI mode
Auke Kok9a799d72007-09-15 14:07:45 -07003348 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003349static int ixgbe_poll(struct napi_struct *napi, int budget)
Auke Kok9a799d72007-09-15 14:07:45 -07003350{
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003351 struct ixgbe_q_vector *q_vector =
3352 container_of(napi, struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003353 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003354 int tx_clean_complete, work_done = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003355
Jeff Garzik5dd2d332008-10-16 05:09:31 -04003356#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08003357 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003358 ixgbe_update_tx_dca(adapter, adapter->tx_ring[0]);
3359 ixgbe_update_rx_dca(adapter, adapter->rx_ring[0]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08003360 }
3361#endif
3362
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003363 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
3364 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07003365
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003366 if (!tx_clean_complete)
David S. Millerd2c7ddd2008-01-15 22:43:24 -08003367 work_done = budget;
3368
David S. Miller53e52c72008-01-07 21:06:12 -08003369 /* If budget not fully consumed, exit the polling mode */
3370 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08003371 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00003372 if (adapter->rx_itr_setting & 1)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08003373 ixgbe_set_itr(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003374 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Nelson, Shannon835462f2009-04-27 22:42:54 +00003375 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07003376 }
Auke Kok9a799d72007-09-15 14:07:45 -07003377 return work_done;
3378}
3379
3380/**
3381 * ixgbe_tx_timeout - Respond to a Tx Hang
3382 * @netdev: network interface device structure
3383 **/
3384static void ixgbe_tx_timeout(struct net_device *netdev)
3385{
3386 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3387
3388 /* Do the reset outside of interrupt context */
3389 schedule_work(&adapter->reset_task);
3390}
3391
3392static void ixgbe_reset_task(struct work_struct *work)
3393{
3394 struct ixgbe_adapter *adapter;
3395 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3396
Alexander Duyck2f90b862008-11-20 20:52:10 -08003397 /* If we're already down or resetting, just bail */
3398 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3399 test_bit(__IXGBE_RESETTING, &adapter->state))
3400 return;
3401
Auke Kok9a799d72007-09-15 14:07:45 -07003402 adapter->tx_timeout_count++;
3403
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003404 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003405}
3406
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003407#ifdef CONFIG_IXGBE_DCB
3408static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003409{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003410 bool ret = false;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003411 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003412
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003413 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3414 return ret;
3415
3416 f->mask = 0x7 << 3;
3417 adapter->num_rx_queues = f->indices;
3418 adapter->num_tx_queues = f->indices;
3419 ret = true;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003420
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003421 return ret;
3422}
3423#endif
3424
Jesse Brandeburg4df10462009-03-13 22:15:31 +00003425/**
3426 * ixgbe_set_rss_queues: Allocate queues for RSS
3427 * @adapter: board private structure to initialize
3428 *
3429 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3430 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3431 *
3432 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003433static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3434{
3435 bool ret = false;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003436 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003437
3438 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003439 f->mask = 0xF;
3440 adapter->num_rx_queues = f->indices;
3441 adapter->num_tx_queues = f->indices;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003442 ret = true;
3443 } else {
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003444 ret = false;
3445 }
3446
3447 return ret;
3448}
3449
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003450/**
3451 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3452 * @adapter: board private structure to initialize
3453 *
3454 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3455 * to the original CPU that initiated the Tx session. This runs in addition
3456 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3457 * Rx load across CPUs using RSS.
3458 *
3459 **/
3460static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
3461{
3462 bool ret = false;
3463 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
3464
3465 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
3466 f_fdir->mask = 0;
3467
3468 /* Flow Director must have RSS enabled */
3469 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
3470 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3471 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
3472 adapter->num_tx_queues = f_fdir->indices;
3473 adapter->num_rx_queues = f_fdir->indices;
3474 ret = true;
3475 } else {
3476 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
3477 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
3478 }
3479 return ret;
3480}
3481
Yi Zou0331a832009-05-17 12:33:52 +00003482#ifdef IXGBE_FCOE
3483/**
3484 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
3485 * @adapter: board private structure to initialize
3486 *
3487 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
3488 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
3489 * rx queues out of the max number of rx queues, instead, it is used as the
3490 * index of the first rx queue used by FCoE.
3491 *
3492 **/
3493static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
3494{
3495 bool ret = false;
3496 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
3497
3498 f->indices = min((int)num_online_cpus(), f->indices);
3499 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
Yi Zou8de8b2e2009-09-03 14:55:50 +00003500 adapter->num_rx_queues = 1;
3501 adapter->num_tx_queues = 1;
Yi Zou0331a832009-05-17 12:33:52 +00003502#ifdef CONFIG_IXGBE_DCB
3503 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Frans Popd6dbee82010-03-24 07:57:35 +00003504 DPRINTK(PROBE, INFO, "FCoE enabled with DCB\n");
Yi Zou0331a832009-05-17 12:33:52 +00003505 ixgbe_set_dcb_queues(adapter);
3506 }
3507#endif
3508 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Frans Popd6dbee82010-03-24 07:57:35 +00003509 DPRINTK(PROBE, INFO, "FCoE enabled with RSS\n");
Yi Zou8faa2a72009-07-09 02:29:50 +00003510 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3511 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
3512 ixgbe_set_fdir_queues(adapter);
3513 else
3514 ixgbe_set_rss_queues(adapter);
Yi Zou0331a832009-05-17 12:33:52 +00003515 }
3516 /* adding FCoE rx rings to the end */
3517 f->mask = adapter->num_rx_queues;
3518 adapter->num_rx_queues += f->indices;
Yi Zou8de8b2e2009-09-03 14:55:50 +00003519 adapter->num_tx_queues += f->indices;
Yi Zou0331a832009-05-17 12:33:52 +00003520
3521 ret = true;
3522 }
3523
3524 return ret;
3525}
3526
3527#endif /* IXGBE_FCOE */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003528/**
3529 * ixgbe_set_sriov_queues: Allocate queues for IOV use
3530 * @adapter: board private structure to initialize
3531 *
3532 * IOV doesn't actually use anything, so just NAK the
3533 * request for now and let the other queue routines
3534 * figure out what to do.
3535 */
3536static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
3537{
3538 return false;
3539}
3540
Jesse Brandeburg4df10462009-03-13 22:15:31 +00003541/*
3542 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
3543 * @adapter: board private structure to initialize
3544 *
3545 * This is the top level queue allocation routine. The order here is very
3546 * important, starting with the "most" number of features turned on at once,
3547 * and ending with the smallest set of features. This way large combinations
3548 * can be allocated if they're turned on, and smaller combinations are the
3549 * fallthrough conditions.
3550 *
3551 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003552static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
3553{
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003554 /* Start with base case */
3555 adapter->num_rx_queues = 1;
3556 adapter->num_tx_queues = 1;
3557 adapter->num_rx_pools = adapter->num_rx_queues;
3558 adapter->num_rx_queues_per_pool = 1;
3559
3560 if (ixgbe_set_sriov_queues(adapter))
3561 return;
3562
Yi Zou0331a832009-05-17 12:33:52 +00003563#ifdef IXGBE_FCOE
3564 if (ixgbe_set_fcoe_queues(adapter))
3565 goto done;
3566
3567#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003568#ifdef CONFIG_IXGBE_DCB
3569 if (ixgbe_set_dcb_queues(adapter))
Wu Fengguangaf22ab12009-04-14 21:54:07 -07003570 goto done;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003571
3572#endif
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003573 if (ixgbe_set_fdir_queues(adapter))
3574 goto done;
3575
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003576 if (ixgbe_set_rss_queues(adapter))
Wu Fengguangaf22ab12009-04-14 21:54:07 -07003577 goto done;
3578
3579 /* fallback to base case */
3580 adapter->num_rx_queues = 1;
3581 adapter->num_tx_queues = 1;
3582
3583done:
3584 /* Notify the stack of the (possibly) reduced Tx Queue count. */
3585 adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003586}
3587
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003588static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003589 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003590{
3591 int err, vector_threshold;
3592
3593 /* We'll want at least 3 (vector_threshold):
3594 * 1) TxQ[0] Cleanup
3595 * 2) RxQ[0] Cleanup
3596 * 3) Other (Link Status Change, etc.)
3597 * 4) TCP Timer (optional)
3598 */
3599 vector_threshold = MIN_MSIX_COUNT;
3600
3601 /* The more we get, the more we will assign to Tx/Rx Cleanup
3602 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
3603 * Right now, we simply care about how many we'll get; we'll
3604 * set them up later while requesting irq's.
3605 */
3606 while (vectors >= vector_threshold) {
3607 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003608 vectors);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003609 if (!err) /* Success in acquiring all requested vectors. */
3610 break;
3611 else if (err < 0)
3612 vectors = 0; /* Nasty failure, quit now */
3613 else /* err == number of vectors we should try again with */
3614 vectors = err;
3615 }
3616
3617 if (vectors < vector_threshold) {
3618 /* Can't allocate enough MSI-X interrupts? Oh well.
3619 * This just means we'll go with either a single MSI
3620 * vector or fall back to legacy interrupts.
3621 */
3622 DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n");
3623 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
3624 kfree(adapter->msix_entries);
3625 adapter->msix_entries = NULL;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003626 } else {
3627 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
Peter P Waskiewicz Jreb7f1392009-02-01 01:18:58 -08003628 /*
3629 * Adjust for only the vectors we'll use, which is minimum
3630 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
3631 * vectors we were allocated.
3632 */
3633 adapter->num_msix_vectors = min(vectors,
3634 adapter->max_msix_q_vectors + NON_Q_VECTORS);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003635 }
3636}
3637
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003638/**
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003639 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003640 * @adapter: board private structure to initialize
3641 *
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003642 * Cache the descriptor ring offsets for RSS to the assigned rings.
3643 *
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003644 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003645static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003646{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003647 int i;
3648 bool ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003649
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003650 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3651 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003652 adapter->rx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003653 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003654 adapter->tx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003655 ret = true;
3656 } else {
3657 ret = false;
3658 }
3659
3660 return ret;
3661}
3662
3663#ifdef CONFIG_IXGBE_DCB
3664/**
3665 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
3666 * @adapter: board private structure to initialize
3667 *
3668 * Cache the descriptor ring offsets for DCB to the assigned rings.
3669 *
3670 **/
3671static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
3672{
3673 int i;
3674 bool ret = false;
3675 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
3676
3677 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3678 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Alexander Duyck2f90b862008-11-20 20:52:10 -08003679 /* the number of queues is assumed to be symmetric */
3680 for (i = 0; i < dcb_i; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003681 adapter->rx_ring[i]->reg_idx = i << 3;
3682 adapter->tx_ring[i]->reg_idx = i << 2;
Alexander Duyck2f90b862008-11-20 20:52:10 -08003683 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003684 ret = true;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003685 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003686 if (dcb_i == 8) {
3687 /*
3688 * Tx TC0 starts at: descriptor queue 0
3689 * Tx TC1 starts at: descriptor queue 32
3690 * Tx TC2 starts at: descriptor queue 64
3691 * Tx TC3 starts at: descriptor queue 80
3692 * Tx TC4 starts at: descriptor queue 96
3693 * Tx TC5 starts at: descriptor queue 104
3694 * Tx TC6 starts at: descriptor queue 112
3695 * Tx TC7 starts at: descriptor queue 120
3696 *
3697 * Rx TC0-TC7 are offset by 16 queues each
3698 */
3699 for (i = 0; i < 3; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003700 adapter->tx_ring[i]->reg_idx = i << 5;
3701 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003702 }
3703 for ( ; i < 5; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003704 adapter->tx_ring[i]->reg_idx =
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003705 ((i + 2) << 4);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003706 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003707 }
3708 for ( ; i < dcb_i; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003709 adapter->tx_ring[i]->reg_idx =
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003710 ((i + 8) << 3);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003711 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003712 }
3713
3714 ret = true;
3715 } else if (dcb_i == 4) {
3716 /*
3717 * Tx TC0 starts at: descriptor queue 0
3718 * Tx TC1 starts at: descriptor queue 64
3719 * Tx TC2 starts at: descriptor queue 96
3720 * Tx TC3 starts at: descriptor queue 112
3721 *
3722 * Rx TC0-TC3 are offset by 32 queues each
3723 */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003724 adapter->tx_ring[0]->reg_idx = 0;
3725 adapter->tx_ring[1]->reg_idx = 64;
3726 adapter->tx_ring[2]->reg_idx = 96;
3727 adapter->tx_ring[3]->reg_idx = 112;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003728 for (i = 0 ; i < dcb_i; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003729 adapter->rx_ring[i]->reg_idx = i << 5;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00003730
3731 ret = true;
3732 } else {
3733 ret = false;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003734 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003735 } else {
3736 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003737 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003738 } else {
3739 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003740 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003741
3742 return ret;
3743}
3744#endif
3745
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003746/**
3747 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
3748 * @adapter: board private structure to initialize
3749 *
3750 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
3751 *
3752 **/
3753static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
3754{
3755 int i;
3756 bool ret = false;
3757
3758 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
3759 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3760 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
3761 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003762 adapter->rx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003763 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003764 adapter->tx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003765 ret = true;
3766 }
3767
3768 return ret;
3769}
3770
Yi Zou0331a832009-05-17 12:33:52 +00003771#ifdef IXGBE_FCOE
3772/**
3773 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
3774 * @adapter: board private structure to initialize
3775 *
3776 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
3777 *
3778 */
3779static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
3780{
Yi Zou8de8b2e2009-09-03 14:55:50 +00003781 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
Yi Zou0331a832009-05-17 12:33:52 +00003782 bool ret = false;
3783 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
3784
3785 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
3786#ifdef CONFIG_IXGBE_DCB
3787 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Yi Zou8de8b2e2009-09-03 14:55:50 +00003788 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
3789
Yi Zou0331a832009-05-17 12:33:52 +00003790 ixgbe_cache_ring_dcb(adapter);
Yi Zou8de8b2e2009-09-03 14:55:50 +00003791 /* find out queues in TC for FCoE */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003792 fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1;
3793 fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1;
Yi Zou8de8b2e2009-09-03 14:55:50 +00003794 /*
3795 * In 82599, the number of Tx queues for each traffic
3796 * class for both 8-TC and 4-TC modes are:
3797 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
3798 * 8 TCs: 32 32 16 16 8 8 8 8
3799 * 4 TCs: 64 64 32 32
3800 * We have max 8 queues for FCoE, where 8 the is
3801 * FCoE redirection table size. If TC for FCoE is
3802 * less than or equal to TC3, we have enough queues
3803 * to add max of 8 queues for FCoE, so we start FCoE
3804 * tx descriptor from the next one, i.e., reg_idx + 1.
3805 * If TC for FCoE is above TC3, implying 8 TC mode,
3806 * and we need 8 for FCoE, we have to take all queues
3807 * in that traffic class for FCoE.
3808 */
3809 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
3810 fcoe_tx_i--;
Yi Zou0331a832009-05-17 12:33:52 +00003811 }
3812#endif /* CONFIG_IXGBE_DCB */
3813 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Yi Zou8faa2a72009-07-09 02:29:50 +00003814 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3815 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
3816 ixgbe_cache_ring_fdir(adapter);
3817 else
3818 ixgbe_cache_ring_rss(adapter);
3819
Yi Zou8de8b2e2009-09-03 14:55:50 +00003820 fcoe_rx_i = f->mask;
3821 fcoe_tx_i = f->mask;
Yi Zou0331a832009-05-17 12:33:52 +00003822 }
Yi Zou8de8b2e2009-09-03 14:55:50 +00003823 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003824 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
3825 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
Yi Zou8de8b2e2009-09-03 14:55:50 +00003826 }
Yi Zou0331a832009-05-17 12:33:52 +00003827 ret = true;
3828 }
3829 return ret;
3830}
3831
3832#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003833/**
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003834 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
3835 * @adapter: board private structure to initialize
3836 *
3837 * SR-IOV doesn't use any descriptor rings but changes the default if
3838 * no other mapping is used.
3839 *
3840 */
3841static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
3842{
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003843 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
3844 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003845 if (adapter->num_vfs)
3846 return true;
3847 else
3848 return false;
3849}
3850
3851/**
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003852 * ixgbe_cache_ring_register - Descriptor ring to register mapping
3853 * @adapter: board private structure to initialize
3854 *
3855 * Once we know the feature-set enabled for the device, we'll cache
3856 * the register offset the descriptor ring is assigned to.
3857 *
3858 * Note, the order the various feature calls is important. It must start with
3859 * the "most" features enabled at the same time, then trickle down to the
3860 * least amount of features turned on at once.
3861 **/
3862static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
3863{
3864 /* start with default case */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003865 adapter->rx_ring[0]->reg_idx = 0;
3866 adapter->tx_ring[0]->reg_idx = 0;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003867
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003868 if (ixgbe_cache_ring_sriov(adapter))
3869 return;
3870
Yi Zou0331a832009-05-17 12:33:52 +00003871#ifdef IXGBE_FCOE
3872 if (ixgbe_cache_ring_fcoe(adapter))
3873 return;
3874
3875#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003876#ifdef CONFIG_IXGBE_DCB
3877 if (ixgbe_cache_ring_dcb(adapter))
3878 return;
3879
3880#endif
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003881 if (ixgbe_cache_ring_fdir(adapter))
3882 return;
3883
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003884 if (ixgbe_cache_ring_rss(adapter))
3885 return;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003886}
3887
Auke Kok9a799d72007-09-15 14:07:45 -07003888/**
3889 * ixgbe_alloc_queues - Allocate memory for all rings
3890 * @adapter: board private structure to initialize
3891 *
3892 * We allocate one ring per queue at run-time since we don't know the
Jesse Brandeburg4df10462009-03-13 22:15:31 +00003893 * number of queues at compile-time. The polling_netdev array is
3894 * intended for Multiqueue, but should work fine with a single queue.
Auke Kok9a799d72007-09-15 14:07:45 -07003895 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08003896static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07003897{
3898 int i;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003899 int orig_node = adapter->node;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003900
3901 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003902 struct ixgbe_ring *ring = adapter->tx_ring[i];
3903 if (orig_node == -1) {
3904 int cur_node = next_online_node(adapter->node);
3905 if (cur_node == MAX_NUMNODES)
3906 cur_node = first_online_node;
3907 adapter->node = cur_node;
3908 }
3909 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
3910 adapter->node);
3911 if (!ring)
3912 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
3913 if (!ring)
3914 goto err_tx_ring_allocation;
3915 ring->count = adapter->tx_ring_count;
3916 ring->queue_index = i;
3917 ring->numa_node = adapter->node;
3918
3919 adapter->tx_ring[i] = ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003920 }
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003921
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003922 /* Restore the adapter's original node */
3923 adapter->node = orig_node;
3924
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003925 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003926 struct ixgbe_ring *ring = adapter->rx_ring[i];
3927 if (orig_node == -1) {
3928 int cur_node = next_online_node(adapter->node);
3929 if (cur_node == MAX_NUMNODES)
3930 cur_node = first_online_node;
3931 adapter->node = cur_node;
3932 }
3933 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
3934 adapter->node);
3935 if (!ring)
3936 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
3937 if (!ring)
3938 goto err_rx_ring_allocation;
3939 ring->count = adapter->rx_ring_count;
3940 ring->queue_index = i;
3941 ring->numa_node = adapter->node;
3942
3943 adapter->rx_ring[i] = ring;
Auke Kok9a799d72007-09-15 14:07:45 -07003944 }
3945
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003946 /* Restore the adapter's original node */
3947 adapter->node = orig_node;
3948
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003949 ixgbe_cache_ring_register(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003950
3951 return 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003952
3953err_rx_ring_allocation:
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003954 for (i = 0; i < adapter->num_tx_queues; i++)
3955 kfree(adapter->tx_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003956err_tx_ring_allocation:
3957 return -ENOMEM;
3958}
3959
3960/**
3961 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
3962 * @adapter: board private structure to initialize
3963 *
3964 * Attempt to configure the interrupts using the best available
3965 * capabilities of the hardware and the kernel.
3966 **/
Al Virofeea6a52008-11-27 15:34:07 -08003967static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003968{
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00003969 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003970 int err = 0;
3971 int vector, v_budget;
3972
3973 /*
3974 * It's easy to be greedy for MSI-X vectors, but it really
3975 * doesn't do us much good if we have a lot more vectors
3976 * than CPU's. So let's be conservative and only ask for
PJ Waskiewicz342bde12009-11-12 23:50:43 +00003977 * (roughly) the same number of vectors as there are CPU's.
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003978 */
3979 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
PJ Waskiewicz342bde12009-11-12 23:50:43 +00003980 (int)num_online_cpus()) + NON_Q_VECTORS;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003981
3982 /*
3983 * At the same time, hardware can only support a maximum of
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00003984 * hw.mac->max_msix_vectors vectors. With features
3985 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
3986 * descriptor queues supported by our device. Thus, we cap it off in
3987 * those rare cases where the cpu count also exceeds our vector limit.
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003988 */
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00003989 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003990
3991 /* A failure in MSI-X entry allocation isn't fatal, but it does
3992 * mean we disable MSI-X capabilities of the adapter. */
3993 adapter->msix_entries = kcalloc(v_budget,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003994 sizeof(struct msix_entry), GFP_KERNEL);
Alexander Duyck7a921c92009-05-06 10:43:28 +00003995 if (adapter->msix_entries) {
3996 for (vector = 0; vector < v_budget; vector++)
3997 adapter->msix_entries[vector].entry = vector;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003998
Alexander Duyck7a921c92009-05-06 10:43:28 +00003999 ixgbe_acquire_msix_vectors(adapter, v_budget);
4000
4001 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4002 goto out;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004003 }
4004
Alexander Duyck7a921c92009-05-06 10:43:28 +00004005 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4006 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004007 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4008 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4009 adapter->atr_sample_rate = 0;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004010 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4011 ixgbe_disable_sriov(adapter);
4012
Alexander Duyck7a921c92009-05-06 10:43:28 +00004013 ixgbe_set_num_queues(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004014
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004015 err = pci_enable_msi(adapter->pdev);
4016 if (!err) {
4017 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
4018 } else {
4019 DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004020 "falling back to legacy. Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004021 /* reset err */
4022 err = 0;
4023 }
4024
4025out:
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004026 return err;
4027}
4028
Alexander Duyck7a921c92009-05-06 10:43:28 +00004029/**
4030 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4031 * @adapter: board private structure to initialize
4032 *
4033 * We allocate one q_vector per queue interrupt. If allocation fails we
4034 * return -ENOMEM.
4035 **/
4036static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
4037{
4038 int q_idx, num_q_vectors;
4039 struct ixgbe_q_vector *q_vector;
4040 int napi_vectors;
4041 int (*poll)(struct napi_struct *, int);
4042
4043 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4044 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4045 napi_vectors = adapter->num_rx_queues;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004046 poll = &ixgbe_clean_rxtx_many;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004047 } else {
4048 num_q_vectors = 1;
4049 napi_vectors = 1;
4050 poll = &ixgbe_poll;
4051 }
4052
4053 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004054 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
4055 GFP_KERNEL, adapter->node);
4056 if (!q_vector)
4057 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
4058 GFP_KERNEL);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004059 if (!q_vector)
4060 goto err_out;
4061 q_vector->adapter = adapter;
Nelson, Shannonf7554a22009-09-18 09:46:06 +00004062 if (q_vector->txr_count && !q_vector->rxr_count)
4063 q_vector->eitr = adapter->tx_eitr_param;
4064 else
4065 q_vector->eitr = adapter->rx_eitr_param;
Alexander Duyckfe49f042009-06-04 16:00:09 +00004066 q_vector->v_idx = q_idx;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004067 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004068 adapter->q_vector[q_idx] = q_vector;
4069 }
4070
4071 return 0;
4072
4073err_out:
4074 while (q_idx) {
4075 q_idx--;
4076 q_vector = adapter->q_vector[q_idx];
4077 netif_napi_del(&q_vector->napi);
4078 kfree(q_vector);
4079 adapter->q_vector[q_idx] = NULL;
4080 }
4081 return -ENOMEM;
4082}
4083
4084/**
4085 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4086 * @adapter: board private structure to initialize
4087 *
4088 * This function frees the memory allocated to the q_vectors. In addition if
4089 * NAPI is enabled it will delete any references to the NAPI struct prior
4090 * to freeing the q_vector.
4091 **/
4092static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
4093{
4094 int q_idx, num_q_vectors;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004095
Alexander Duyck91281fd2009-06-04 16:00:27 +00004096 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
Alexander Duyck7a921c92009-05-06 10:43:28 +00004097 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004098 else
Alexander Duyck7a921c92009-05-06 10:43:28 +00004099 num_q_vectors = 1;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004100
4101 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4102 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
Alexander Duyck7a921c92009-05-06 10:43:28 +00004103 adapter->q_vector[q_idx] = NULL;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004104 netif_napi_del(&q_vector->napi);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004105 kfree(q_vector);
4106 }
4107}
4108
Don Skidmore7b25cdb2009-08-25 04:47:32 +00004109static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004110{
4111 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4112 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4113 pci_disable_msix(adapter->pdev);
4114 kfree(adapter->msix_entries);
4115 adapter->msix_entries = NULL;
4116 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
4117 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
4118 pci_disable_msi(adapter->pdev);
4119 }
4120 return;
4121}
4122
4123/**
4124 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4125 * @adapter: board private structure to initialize
4126 *
4127 * We determine which interrupt scheme to use based on...
4128 * - Kernel support (MSI, MSI-X)
4129 * - which can be user-defined (via MODULE_PARAM)
4130 * - Hardware queue count (num_*_queues)
4131 * - defined by miscellaneous hardware support/features (RSS, etc.)
4132 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08004133int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004134{
4135 int err;
4136
4137 /* Number of supported queues */
4138 ixgbe_set_num_queues(adapter);
4139
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004140 err = ixgbe_set_interrupt_capability(adapter);
4141 if (err) {
4142 DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n");
4143 goto err_set_interrupt;
4144 }
4145
Alexander Duyck7a921c92009-05-06 10:43:28 +00004146 err = ixgbe_alloc_q_vectors(adapter);
4147 if (err) {
4148 DPRINTK(PROBE, ERR, "Unable to allocate memory for queue "
4149 "vectors\n");
4150 goto err_alloc_q_vectors;
4151 }
4152
4153 err = ixgbe_alloc_queues(adapter);
4154 if (err) {
4155 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
4156 goto err_alloc_queues;
4157 }
4158
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004159 DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004160 "Tx Queue count = %u\n",
4161 (adapter->num_rx_queues > 1) ? "Enabled" :
4162 "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004163
4164 set_bit(__IXGBE_DOWN, &adapter->state);
4165
4166 return 0;
4167
Alexander Duyck7a921c92009-05-06 10:43:28 +00004168err_alloc_queues:
4169 ixgbe_free_q_vectors(adapter);
4170err_alloc_q_vectors:
4171 ixgbe_reset_interrupt_capability(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004172err_set_interrupt:
Alexander Duyck7a921c92009-05-06 10:43:28 +00004173 return err;
4174}
4175
4176/**
4177 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4178 * @adapter: board private structure to clear interrupt scheme on
4179 *
4180 * We go through and clear interrupt specific resources and reset the structure
4181 * to pre-load conditions
4182 **/
4183void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
4184{
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004185 int i;
4186
4187 for (i = 0; i < adapter->num_tx_queues; i++) {
4188 kfree(adapter->tx_ring[i]);
4189 adapter->tx_ring[i] = NULL;
4190 }
4191 for (i = 0; i < adapter->num_rx_queues; i++) {
4192 kfree(adapter->rx_ring[i]);
4193 adapter->rx_ring[i] = NULL;
4194 }
Alexander Duyck7a921c92009-05-06 10:43:28 +00004195
4196 ixgbe_free_q_vectors(adapter);
4197 ixgbe_reset_interrupt_capability(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004198}
4199
4200/**
Donald Skidmorec4900be2008-11-20 21:11:42 -08004201 * ixgbe_sfp_timer - worker thread to find a missing module
4202 * @data: pointer to our adapter struct
4203 **/
4204static void ixgbe_sfp_timer(unsigned long data)
4205{
4206 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4207
Jesse Brandeburg4df10462009-03-13 22:15:31 +00004208 /*
4209 * Do the sfp_timer outside of interrupt context due to the
Donald Skidmorec4900be2008-11-20 21:11:42 -08004210 * delays that sfp+ detection requires
4211 */
4212 schedule_work(&adapter->sfp_task);
4213}
4214
4215/**
4216 * ixgbe_sfp_task - worker thread to find a missing module
4217 * @work: pointer to work_struct containing our data
4218 **/
4219static void ixgbe_sfp_task(struct work_struct *work)
4220{
4221 struct ixgbe_adapter *adapter = container_of(work,
4222 struct ixgbe_adapter,
4223 sfp_task);
4224 struct ixgbe_hw *hw = &adapter->hw;
4225
4226 if ((hw->phy.type == ixgbe_phy_nl) &&
4227 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
4228 s32 ret = hw->phy.ops.identify_sfp(hw);
Don Skidmore63d6e1d2009-07-02 12:50:12 +00004229 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
Donald Skidmorec4900be2008-11-20 21:11:42 -08004230 goto reschedule;
4231 ret = hw->phy.ops.reset(hw);
4232 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore88d2b812009-06-30 11:43:55 +00004233 dev_err(&adapter->pdev->dev, "failed to initialize "
4234 "because an unsupported SFP+ module type "
4235 "was detected.\n"
4236 "Reload the driver after installing a "
4237 "supported module.\n");
Donald Skidmorec4900be2008-11-20 21:11:42 -08004238 unregister_netdev(adapter->netdev);
4239 } else {
4240 DPRINTK(PROBE, INFO, "detected SFP+: %d\n",
4241 hw->phy.sfp_type);
4242 }
4243 /* don't need this routine any more */
4244 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4245 }
4246 return;
4247reschedule:
4248 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
4249 mod_timer(&adapter->sfp_timer,
4250 round_jiffies(jiffies + (2 * HZ)));
4251}
4252
4253/**
Auke Kok9a799d72007-09-15 14:07:45 -07004254 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4255 * @adapter: board private structure to initialize
4256 *
4257 * ixgbe_sw_init initializes the Adapter private data structure.
4258 * Fields are initialized based on PCI device information and
4259 * OS network device settings (MTU size).
4260 **/
4261static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
4262{
4263 struct ixgbe_hw *hw = &adapter->hw;
4264 struct pci_dev *pdev = adapter->pdev;
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00004265 struct net_device *dev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004266 unsigned int rss;
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004267#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08004268 int j;
4269 struct tc_configuration *tc;
4270#endif
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004271
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004272 /* PCI config space info */
4273
4274 hw->vendor_id = pdev->vendor;
4275 hw->device_id = pdev->device;
4276 hw->revision_id = pdev->revision;
4277 hw->subsystem_vendor_id = pdev->subsystem_vendor;
4278 hw->subsystem_device_id = pdev->subsystem_device;
4279
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004280 /* Set capability flags */
4281 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
4282 adapter->ring_feature[RING_F_RSS].indices = rss;
4283 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004284 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
Don Skidmorebf069c92009-05-07 10:39:54 +00004285 if (hw->mac.type == ixgbe_mac_82598EB) {
4286 if (hw->device_id == IXGBE_DEV_ID_82598AT)
4287 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004288 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
Don Skidmorebf069c92009-05-07 10:39:54 +00004289 } else if (hw->mac.type == ixgbe_mac_82599EB) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004290 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00004291 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
4292 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00004293 if (dev->features & NETIF_F_NTUPLE) {
4294 /* Flow Director perfect filter enabled */
4295 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4296 adapter->atr_sample_rate = 0;
4297 spin_lock_init(&adapter->fdir_perfect_lock);
4298 } else {
4299 /* Flow Director hash filters enabled */
4300 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
4301 adapter->atr_sample_rate = 20;
4302 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004303 adapter->ring_feature[RING_F_FDIR].indices =
4304 IXGBE_MAX_FDIR_INDICES;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004305 adapter->fdir_pballoc = 0;
Yi Zoueacd73f2009-05-13 13:11:06 +00004306#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +00004307 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
4308 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
4309 adapter->ring_feature[RING_F_FCOE].indices = 0;
Yi Zou61a0f422009-12-03 11:32:22 +00004310#ifdef CONFIG_IXGBE_DCB
Yi Zou6ee16522009-08-31 12:34:28 +00004311 /* Default traffic class to use for FCoE */
4312 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
Yi Zou61a0f422009-12-03 11:32:22 +00004313#endif
Yi Zoueacd73f2009-05-13 13:11:06 +00004314#endif /* IXGBE_FCOE */
Alexander Duyckf8212f92009-04-27 22:42:37 +00004315 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08004316
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004317#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08004318 /* Configure DCB traffic classes */
4319 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
4320 tc = &adapter->dcb_cfg.tc_config[j];
4321 tc->path[DCB_TX_CONFIG].bwg_id = 0;
4322 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
4323 tc->path[DCB_RX_CONFIG].bwg_id = 0;
4324 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
4325 tc->dcb_pfc = pfc_disabled;
4326 }
4327 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
4328 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
4329 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00004330 adapter->dcb_cfg.pfc_mode_enable = false;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004331 adapter->dcb_cfg.round_robin_enable = false;
4332 adapter->dcb_set_bitmap = 0x00;
4333 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
4334 adapter->ring_feature[RING_F_DCB].indices);
4335
4336#endif
Auke Kok9a799d72007-09-15 14:07:45 -07004337
4338 /* default flow control settings */
Don Skidmorecd7664f2009-03-31 21:33:44 +00004339 hw->fc.requested_mode = ixgbe_fc_full;
Don Skidmore71fd5702009-03-31 21:35:05 +00004340 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00004341#ifdef CONFIG_DCB
4342 adapter->last_lfc_mode = hw->fc.current_mode;
4343#endif
Jesse Brandeburg2b9ade92008-08-26 04:27:10 -07004344 hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
4345 hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
4346 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
4347 hw->fc.send_xon = true;
Don Skidmore71fd5702009-03-31 21:35:05 +00004348 hw->fc.disable_fc_autoneg = false;
Auke Kok9a799d72007-09-15 14:07:45 -07004349
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07004350 /* enable itr by default in dynamic mode */
Nelson, Shannonf7554a22009-09-18 09:46:06 +00004351 adapter->rx_itr_setting = 1;
4352 adapter->rx_eitr_param = 20000;
4353 adapter->tx_itr_setting = 1;
4354 adapter->tx_eitr_param = 10000;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07004355
4356 /* set defaults for eitr in MegaBytes */
4357 adapter->eitr_low = 10;
4358 adapter->eitr_high = 20;
4359
4360 /* set default ring sizes */
4361 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
4362 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
4363
Auke Kok9a799d72007-09-15 14:07:45 -07004364 /* initialize eeprom parameters */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004365 if (ixgbe_init_eeprom_params_generic(hw)) {
Auke Kok9a799d72007-09-15 14:07:45 -07004366 dev_err(&pdev->dev, "EEPROM initialization failed\n");
4367 return -EIO;
4368 }
4369
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004370 /* enable rx csum by default */
Auke Kok9a799d72007-09-15 14:07:45 -07004371 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4372
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004373 /* get assigned NUMA node */
4374 adapter->node = dev_to_node(&pdev->dev);
4375
Auke Kok9a799d72007-09-15 14:07:45 -07004376 set_bit(__IXGBE_DOWN, &adapter->state);
4377
4378 return 0;
4379}
4380
4381/**
4382 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4383 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004384 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07004385 *
4386 * Return 0 on success, negative on failure
4387 **/
4388int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004389 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07004390{
4391 struct pci_dev *pdev = adapter->pdev;
4392 int size;
4393
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004394 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004395 tx_ring->tx_buffer_info = vmalloc_node(size, tx_ring->numa_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004396 if (!tx_ring->tx_buffer_info)
4397 tx_ring->tx_buffer_info = vmalloc(size);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004398 if (!tx_ring->tx_buffer_info)
4399 goto err;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004400 memset(tx_ring->tx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07004401
4402 /* round up to nearest 4K */
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08004403 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004404 tx_ring->size = ALIGN(tx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07004405
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004406 tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
4407 &tx_ring->dma);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004408 if (!tx_ring->desc)
4409 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07004410
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004411 tx_ring->next_to_use = 0;
4412 tx_ring->next_to_clean = 0;
4413 tx_ring->work_limit = tx_ring->count;
Auke Kok9a799d72007-09-15 14:07:45 -07004414 return 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004415
4416err:
4417 vfree(tx_ring->tx_buffer_info);
4418 tx_ring->tx_buffer_info = NULL;
4419 DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit "
4420 "descriptor ring\n");
4421 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07004422}
4423
4424/**
Alexander Duyck69888672008-09-11 20:05:39 -07004425 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4426 * @adapter: board private structure
4427 *
4428 * If this function returns with an error, then it's possible one or
4429 * more of the rings is populated (while the rest are not). It is the
4430 * callers duty to clean those orphaned rings.
4431 *
4432 * Return 0 on success, negative on failure
4433 **/
4434static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4435{
4436 int i, err = 0;
4437
4438 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004439 err = ixgbe_setup_tx_resources(adapter, adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07004440 if (!err)
4441 continue;
4442 DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i);
4443 break;
4444 }
4445
4446 return err;
4447}
4448
4449/**
Auke Kok9a799d72007-09-15 14:07:45 -07004450 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
4451 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004452 * @rx_ring: rx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07004453 *
4454 * Returns 0 on success, negative on failure
4455 **/
4456int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004457 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07004458{
4459 struct pci_dev *pdev = adapter->pdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004460 int size;
Auke Kok9a799d72007-09-15 14:07:45 -07004461
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004462 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004463 rx_ring->rx_buffer_info = vmalloc_node(size, adapter->node);
4464 if (!rx_ring->rx_buffer_info)
4465 rx_ring->rx_buffer_info = vmalloc(size);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004466 if (!rx_ring->rx_buffer_info) {
Auke Kok9a799d72007-09-15 14:07:45 -07004467 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004468 "vmalloc allocation failed for the rx desc ring\n");
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004469 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07004470 }
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004471 memset(rx_ring->rx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07004472
Auke Kok9a799d72007-09-15 14:07:45 -07004473 /* Round up to nearest 4K */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004474 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
4475 rx_ring->size = ALIGN(rx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07004476
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004477 rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07004478
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004479 if (!rx_ring->desc) {
Auke Kok9a799d72007-09-15 14:07:45 -07004480 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004481 "Memory allocation failed for the rx desc ring\n");
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004482 vfree(rx_ring->rx_buffer_info);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004483 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07004484 }
4485
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004486 rx_ring->next_to_clean = 0;
4487 rx_ring->next_to_use = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07004488
4489 return 0;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004490
4491alloc_failed:
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004492 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07004493}
4494
4495/**
Alexander Duyck69888672008-09-11 20:05:39 -07004496 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
4497 * @adapter: board private structure
4498 *
4499 * If this function returns with an error, then it's possible one or
4500 * more of the rings is populated (while the rest are not). It is the
4501 * callers duty to clean those orphaned rings.
4502 *
4503 * Return 0 on success, negative on failure
4504 **/
4505
4506static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
4507{
4508 int i, err = 0;
4509
4510 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004511 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07004512 if (!err)
4513 continue;
4514 DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i);
4515 break;
4516 }
4517
4518 return err;
4519}
4520
4521/**
Auke Kok9a799d72007-09-15 14:07:45 -07004522 * ixgbe_free_tx_resources - Free Tx Resources per Queue
4523 * @adapter: board private structure
4524 * @tx_ring: Tx descriptor ring for a specific queue
4525 *
4526 * Free all transmit software resources
4527 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07004528void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
4529 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07004530{
4531 struct pci_dev *pdev = adapter->pdev;
4532
4533 ixgbe_clean_tx_ring(adapter, tx_ring);
4534
4535 vfree(tx_ring->tx_buffer_info);
4536 tx_ring->tx_buffer_info = NULL;
4537
4538 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
4539
4540 tx_ring->desc = NULL;
4541}
4542
4543/**
4544 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
4545 * @adapter: board private structure
4546 *
4547 * Free all transmit software resources
4548 **/
4549static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
4550{
4551 int i;
4552
4553 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004554 if (adapter->tx_ring[i]->desc)
4555 ixgbe_free_tx_resources(adapter, adapter->tx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07004556}
4557
4558/**
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004559 * ixgbe_free_rx_resources - Free Rx Resources
Auke Kok9a799d72007-09-15 14:07:45 -07004560 * @adapter: board private structure
4561 * @rx_ring: ring to clean the resources from
4562 *
4563 * Free all receive software resources
4564 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07004565void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
4566 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07004567{
4568 struct pci_dev *pdev = adapter->pdev;
4569
4570 ixgbe_clean_rx_ring(adapter, rx_ring);
4571
4572 vfree(rx_ring->rx_buffer_info);
4573 rx_ring->rx_buffer_info = NULL;
4574
4575 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
4576
4577 rx_ring->desc = NULL;
4578}
4579
4580/**
4581 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
4582 * @adapter: board private structure
4583 *
4584 * Free all receive software resources
4585 **/
4586static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
4587{
4588 int i;
4589
4590 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004591 if (adapter->rx_ring[i]->desc)
4592 ixgbe_free_rx_resources(adapter, adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07004593}
4594
4595/**
Auke Kok9a799d72007-09-15 14:07:45 -07004596 * ixgbe_change_mtu - Change the Maximum Transfer Unit
4597 * @netdev: network interface device structure
4598 * @new_mtu: new value for maximum frame size
4599 *
4600 * Returns 0 on success, negative on failure
4601 **/
4602static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
4603{
4604 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4605 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4606
Jesse Brandeburg42c783c2008-09-11 19:56:28 -07004607 /* MTU < 68 is an error and causes problems on some kernels */
4608 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
Auke Kok9a799d72007-09-15 14:07:45 -07004609 return -EINVAL;
4610
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004611 DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004612 netdev->mtu, new_mtu);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004613 /* must set new MTU before calling down or up */
Auke Kok9a799d72007-09-15 14:07:45 -07004614 netdev->mtu = new_mtu;
4615
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08004616 if (netif_running(netdev))
4617 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004618
4619 return 0;
4620}
4621
4622/**
4623 * ixgbe_open - Called when a network interface is made active
4624 * @netdev: network interface device structure
4625 *
4626 * Returns 0 on success, negative value on failure
4627 *
4628 * The open entry point is called when a network interface is made
4629 * active by the system (IFF_UP). At this point all resources needed
4630 * for transmit and receive operations are allocated, the interrupt
4631 * handler is registered with the OS, the watchdog timer is started,
4632 * and the stack is notified that the interface is ready.
4633 **/
4634static int ixgbe_open(struct net_device *netdev)
4635{
4636 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4637 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07004638
Auke Kok4bebfaa2008-02-11 09:26:01 -08004639 /* disallow open during test */
4640 if (test_bit(__IXGBE_TESTING, &adapter->state))
4641 return -EBUSY;
4642
Jesse Brandeburg54386462009-04-17 20:44:27 +00004643 netif_carrier_off(netdev);
4644
Auke Kok9a799d72007-09-15 14:07:45 -07004645 /* allocate transmit descriptors */
4646 err = ixgbe_setup_all_tx_resources(adapter);
4647 if (err)
4648 goto err_setup_tx;
4649
Auke Kok9a799d72007-09-15 14:07:45 -07004650 /* allocate receive descriptors */
4651 err = ixgbe_setup_all_rx_resources(adapter);
4652 if (err)
4653 goto err_setup_rx;
4654
4655 ixgbe_configure(adapter);
4656
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004657 err = ixgbe_request_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004658 if (err)
4659 goto err_req_irq;
4660
Auke Kok9a799d72007-09-15 14:07:45 -07004661 err = ixgbe_up_complete(adapter);
4662 if (err)
4663 goto err_up;
4664
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07004665 netif_tx_start_all_queues(netdev);
4666
Auke Kok9a799d72007-09-15 14:07:45 -07004667 return 0;
4668
4669err_up:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08004670 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004671 ixgbe_free_irq(adapter);
4672err_req_irq:
Auke Kok9a799d72007-09-15 14:07:45 -07004673err_setup_rx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00004674 ixgbe_free_all_rx_resources(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004675err_setup_tx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00004676 ixgbe_free_all_tx_resources(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004677 ixgbe_reset(adapter);
4678
4679 return err;
4680}
4681
4682/**
4683 * ixgbe_close - Disables a network interface
4684 * @netdev: network interface device structure
4685 *
4686 * Returns 0, this is not allowed to fail
4687 *
4688 * The close entry point is called when an interface is de-activated
4689 * by the OS. The hardware is still under the drivers control, but
4690 * needs to be disabled. A global MAC reset is issued to stop the
4691 * hardware, and all transmit and receive resources are freed.
4692 **/
4693static int ixgbe_close(struct net_device *netdev)
4694{
4695 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004696
4697 ixgbe_down(adapter);
4698 ixgbe_free_irq(adapter);
4699
4700 ixgbe_free_all_tx_resources(adapter);
4701 ixgbe_free_all_rx_resources(adapter);
4702
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08004703 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004704
4705 return 0;
4706}
4707
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004708#ifdef CONFIG_PM
4709static int ixgbe_resume(struct pci_dev *pdev)
4710{
4711 struct net_device *netdev = pci_get_drvdata(pdev);
4712 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4713 u32 err;
4714
4715 pci_set_power_state(pdev, PCI_D0);
4716 pci_restore_state(pdev);
Don Skidmore656ab8172009-12-23 21:19:19 -08004717 /*
4718 * pci_restore_state clears dev->state_saved so call
4719 * pci_save_state to restore it.
4720 */
4721 pci_save_state(pdev);
gouji-new9ce77662009-05-06 10:44:45 +00004722
4723 err = pci_enable_device_mem(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004724 if (err) {
Alexander Duyck69888672008-09-11 20:05:39 -07004725 printk(KERN_ERR "ixgbe: Cannot enable PCI device from "
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004726 "suspend\n");
4727 return err;
4728 }
4729 pci_set_master(pdev);
4730
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07004731 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004732
4733 err = ixgbe_init_interrupt_scheme(adapter);
4734 if (err) {
4735 printk(KERN_ERR "ixgbe: Cannot initialize interrupts for "
4736 "device\n");
4737 return err;
4738 }
4739
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004740 ixgbe_reset(adapter);
4741
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00004742 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
4743
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004744 if (netif_running(netdev)) {
4745 err = ixgbe_open(adapter->netdev);
4746 if (err)
4747 return err;
4748 }
4749
4750 netif_device_attach(netdev);
4751
4752 return 0;
4753}
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004754#endif /* CONFIG_PM */
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00004755
4756static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004757{
4758 struct net_device *netdev = pci_get_drvdata(pdev);
4759 struct ixgbe_adapter *adapter = netdev_priv(netdev);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004760 struct ixgbe_hw *hw = &adapter->hw;
4761 u32 ctrl, fctrl;
4762 u32 wufc = adapter->wol;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004763#ifdef CONFIG_PM
4764 int retval = 0;
4765#endif
4766
4767 netif_device_detach(netdev);
4768
4769 if (netif_running(netdev)) {
4770 ixgbe_down(adapter);
4771 ixgbe_free_irq(adapter);
4772 ixgbe_free_all_tx_resources(adapter);
4773 ixgbe_free_all_rx_resources(adapter);
4774 }
Alexander Duyck7a921c92009-05-06 10:43:28 +00004775 ixgbe_clear_interrupt_scheme(adapter);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004776
4777#ifdef CONFIG_PM
4778 retval = pci_save_state(pdev);
4779 if (retval)
4780 return retval;
Jesse Brandeburg4df10462009-03-13 22:15:31 +00004781
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004782#endif
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004783 if (wufc) {
4784 ixgbe_set_rx_mode(netdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004785
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004786 /* turn on all-multi mode if wake on multicast is enabled */
4787 if (wufc & IXGBE_WUFC_MC) {
4788 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4789 fctrl |= IXGBE_FCTRL_MPE;
4790 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
4791 }
4792
4793 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
4794 ctrl |= IXGBE_CTRL_GIO_DIS;
4795 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
4796
4797 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
4798 } else {
4799 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
4800 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
4801 }
4802
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07004803 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
4804 pci_wake_from_d3(pdev, true);
4805 else
4806 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004807
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00004808 *enable_wake = !!wufc;
4809
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004810 ixgbe_release_hw_control(adapter);
4811
4812 pci_disable_device(pdev);
4813
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004814 return 0;
4815}
4816
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00004817#ifdef CONFIG_PM
4818static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
4819{
4820 int retval;
4821 bool wake;
4822
4823 retval = __ixgbe_shutdown(pdev, &wake);
4824 if (retval)
4825 return retval;
4826
4827 if (wake) {
4828 pci_prepare_to_sleep(pdev);
4829 } else {
4830 pci_wake_from_d3(pdev, false);
4831 pci_set_power_state(pdev, PCI_D3hot);
4832 }
4833
4834 return 0;
4835}
4836#endif /* CONFIG_PM */
4837
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004838static void ixgbe_shutdown(struct pci_dev *pdev)
4839{
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00004840 bool wake;
4841
4842 __ixgbe_shutdown(pdev, &wake);
4843
4844 if (system_state == SYSTEM_POWER_OFF) {
4845 pci_wake_from_d3(pdev, wake);
4846 pci_set_power_state(pdev, PCI_D3hot);
4847 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07004848}
4849
4850/**
Auke Kok9a799d72007-09-15 14:07:45 -07004851 * ixgbe_update_stats - Update the board statistics counters.
4852 * @adapter: board private structure
4853 **/
4854void ixgbe_update_stats(struct ixgbe_adapter *adapter)
4855{
Ajit Khaparde2d86f132009-10-07 02:43:49 +00004856 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07004857 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004858 u64 total_mpc = 0;
4859 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00004860 u64 non_eop_descs = 0, restart_queue = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07004861
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00004862 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00004863 u64 rsc_count = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00004864 u64 rsc_flush = 0;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00004865 for (i = 0; i < 16; i++)
4866 adapter->hw_rx_no_dma_resources +=
4867 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00004868 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004869 rsc_count += adapter->rx_ring[i]->rsc_count;
4870 rsc_flush += adapter->rx_ring[i]->rsc_flush;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00004871 }
4872 adapter->rsc_total_count = rsc_count;
4873 adapter->rsc_total_flush = rsc_flush;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00004874 }
4875
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00004876 /* gather some stats to the adapter struct that are per queue */
4877 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004878 restart_queue += adapter->tx_ring[i]->restart_queue;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00004879 adapter->restart_queue = restart_queue;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00004880
4881 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004882 non_eop_descs += adapter->rx_ring[i]->non_eop_descs;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00004883 adapter->non_eop_descs = non_eop_descs;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00004884
Auke Kok9a799d72007-09-15 14:07:45 -07004885 adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004886 for (i = 0; i < 8; i++) {
4887 /* for packet buffers not used, the register should read 0 */
4888 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
4889 missed_rx += mpc;
4890 adapter->stats.mpc[i] += mpc;
4891 total_mpc += adapter->stats.mpc[i];
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004892 if (hw->mac.type == ixgbe_mac_82598EB)
4893 adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
Alexander Duyck2f90b862008-11-20 20:52:10 -08004894 adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
4895 adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
4896 adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
4897 adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004898 if (hw->mac.type == ixgbe_mac_82599EB) {
4899 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
4900 IXGBE_PXONRXCNT(i));
4901 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
4902 IXGBE_PXOFFRXCNT(i));
4903 adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004904 } else {
4905 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
4906 IXGBE_PXONRXC(i));
4907 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
4908 IXGBE_PXOFFRXC(i));
4909 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08004910 adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw,
4911 IXGBE_PXONTXC(i));
Alexander Duyck2f90b862008-11-20 20:52:10 -08004912 adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw,
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004913 IXGBE_PXOFFTXC(i));
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004914 }
4915 adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
4916 /* work around hardware counting issue */
4917 adapter->stats.gprc -= missed_rx;
Auke Kok9a799d72007-09-15 14:07:45 -07004918
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004919 /* 82598 hardware only has a 32 bit counter in the high register */
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004920 if (hw->mac.type == ixgbe_mac_82599EB) {
Ben Greearaad71912009-09-30 12:08:16 +00004921 u64 tmp;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004922 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
Ben Greearaad71912009-09-30 12:08:16 +00004923 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF; /* 4 high bits of GORC */
4924 adapter->stats.gorc += (tmp << 32);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004925 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
Ben Greearaad71912009-09-30 12:08:16 +00004926 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF; /* 4 high bits of GOTC */
4927 adapter->stats.gotc += (tmp << 32);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004928 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORL);
4929 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
4930 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
4931 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004932 adapter->stats.fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
4933 adapter->stats.fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
Yi Zou6d455222009-05-13 13:12:16 +00004934#ifdef IXGBE_FCOE
4935 adapter->stats.fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
4936 adapter->stats.fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
4937 adapter->stats.fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
4938 adapter->stats.fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
4939 adapter->stats.fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
4940 adapter->stats.fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
4941#endif /* IXGBE_FCOE */
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004942 } else {
4943 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
4944 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
4945 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
4946 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
4947 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
4948 }
Auke Kok9a799d72007-09-15 14:07:45 -07004949 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
4950 adapter->stats.bprc += bprc;
4951 adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004952 if (hw->mac.type == ixgbe_mac_82598EB)
4953 adapter->stats.mprc -= bprc;
Auke Kok9a799d72007-09-15 14:07:45 -07004954 adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC);
4955 adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
4956 adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
4957 adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
4958 adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
4959 adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
4960 adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
Auke Kok9a799d72007-09-15 14:07:45 -07004961 adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004962 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
4963 adapter->stats.lxontxc += lxon;
4964 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
4965 adapter->stats.lxofftxc += lxoff;
Auke Kok9a799d72007-09-15 14:07:45 -07004966 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
4967 adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004968 adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
4969 /*
4970 * 82598 errata - tx of flow control packets is included in tx counters
4971 */
4972 xon_off_tot = lxon + lxoff;
4973 adapter->stats.gptc -= xon_off_tot;
4974 adapter->stats.mptc -= xon_off_tot;
4975 adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
Auke Kok9a799d72007-09-15 14:07:45 -07004976 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
4977 adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
4978 adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
Auke Kok9a799d72007-09-15 14:07:45 -07004979 adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
4980 adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08004981 adapter->stats.ptc64 -= xon_off_tot;
Auke Kok9a799d72007-09-15 14:07:45 -07004982 adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
4983 adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
4984 adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
4985 adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
4986 adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
Auke Kok9a799d72007-09-15 14:07:45 -07004987 adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
4988
4989 /* Fill out the OS statistics structure */
Ajit Khaparde2d86f132009-10-07 02:43:49 +00004990 netdev->stats.multicast = adapter->stats.mprc;
Auke Kok9a799d72007-09-15 14:07:45 -07004991
4992 /* Rx Errors */
Ajit Khaparde2d86f132009-10-07 02:43:49 +00004993 netdev->stats.rx_errors = adapter->stats.crcerrs +
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004994 adapter->stats.rlec;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00004995 netdev->stats.rx_dropped = 0;
4996 netdev->stats.rx_length_errors = adapter->stats.rlec;
4997 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4998 netdev->stats.rx_missed_errors = total_mpc;
Auke Kok9a799d72007-09-15 14:07:45 -07004999}
5000
5001/**
5002 * ixgbe_watchdog - Timer Call-back
5003 * @data: pointer to adapter cast into an unsigned long
5004 **/
5005static void ixgbe_watchdog(unsigned long data)
5006{
5007 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005008 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00005009 u64 eics = 0;
5010 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07005011
Alexander Duyckfe49f042009-06-04 16:00:09 +00005012 /*
5013 * Do the watchdog outside of interrupt context due to the lovely
5014 * delays that some of the newer hardware requires
5015 */
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00005016
Alexander Duyckfe49f042009-06-04 16:00:09 +00005017 if (test_bit(__IXGBE_DOWN, &adapter->state))
5018 goto watchdog_short_circuit;
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00005019
Alexander Duyckfe49f042009-06-04 16:00:09 +00005020 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
5021 /*
5022 * for legacy and MSI interrupts don't set any bits
5023 * that are enabled for EIAM, because this operation
5024 * would set *both* EIMS and EICS for any bit in EIAM
5025 */
5026 IXGBE_WRITE_REG(hw, IXGBE_EICS,
5027 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
5028 goto watchdog_reschedule;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005029 }
5030
Alexander Duyckfe49f042009-06-04 16:00:09 +00005031 /* get one bit for every active tx/rx interrupt vector */
5032 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
5033 struct ixgbe_q_vector *qv = adapter->q_vector[i];
5034 if (qv->rxr_count || qv->txr_count)
5035 eics |= ((u64)1 << i);
5036 }
5037
5038 /* Cause software interrupt to ensure rx rings are cleaned */
5039 ixgbe_irq_rearm_queues(adapter, eics);
5040
5041watchdog_reschedule:
5042 /* Reset the timer */
5043 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
5044
5045watchdog_short_circuit:
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005046 schedule_work(&adapter->watchdog_task);
5047}
5048
5049/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005050 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5051 * @work: pointer to work_struct containing our data
5052 **/
5053static void ixgbe_multispeed_fiber_task(struct work_struct *work)
5054{
5055 struct ixgbe_adapter *adapter = container_of(work,
5056 struct ixgbe_adapter,
5057 multispeed_fiber_task);
5058 struct ixgbe_hw *hw = &adapter->hw;
5059 u32 autoneg;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005060 bool negotiation;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005061
5062 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
Mallikarjuna R Chilakalaa1f25322009-06-30 11:44:36 +00005063 autoneg = hw->phy.autoneg_advertised;
5064 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005065 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
Mallikarjuna R Chilakala1097cd12010-03-18 14:34:52 +00005066 hw->mac.autotry_restart = false;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005067 if (hw->mac.ops.setup_link)
5068 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005069 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5070 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
5071}
5072
5073/**
5074 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5075 * @work: pointer to work_struct containing our data
5076 **/
5077static void ixgbe_sfp_config_module_task(struct work_struct *work)
5078{
5079 struct ixgbe_adapter *adapter = container_of(work,
5080 struct ixgbe_adapter,
5081 sfp_config_module_task);
5082 struct ixgbe_hw *hw = &adapter->hw;
5083 u32 err;
5084
5085 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005086
5087 /* Time for electrical oscillations to settle down */
5088 msleep(100);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005089 err = hw->phy.ops.identify_sfp(hw);
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005090
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005091 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore88d2b812009-06-30 11:43:55 +00005092 dev_err(&adapter->pdev->dev, "failed to initialize because "
5093 "an unsupported SFP+ module type was detected.\n"
5094 "Reload the driver after installing a supported "
5095 "module.\n");
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005096 unregister_netdev(adapter->netdev);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005097 return;
5098 }
5099 hw->mac.ops.setup_sfp(hw);
5100
Tony Breeds8d1c3c02009-04-09 22:29:10 +00005101 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005102 /* This will also work for DA Twinax connections */
5103 schedule_work(&adapter->multispeed_fiber_task);
5104 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
5105}
5106
5107/**
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005108 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5109 * @work: pointer to work_struct containing our data
5110 **/
5111static void ixgbe_fdir_reinit_task(struct work_struct *work)
5112{
5113 struct ixgbe_adapter *adapter = container_of(work,
5114 struct ixgbe_adapter,
5115 fdir_reinit_task);
5116 struct ixgbe_hw *hw = &adapter->hw;
5117 int i;
5118
5119 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
5120 for (i = 0; i < adapter->num_tx_queues; i++)
5121 set_bit(__IXGBE_FDIR_INIT_DONE,
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005122 &(adapter->tx_ring[i]->reinit_state));
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005123 } else {
5124 DPRINTK(PROBE, ERR, "failed to finish FDIR re-initialization, "
Frans Popd6dbee82010-03-24 07:57:35 +00005125 "ignored adding FDIR ATR filters\n");
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005126 }
5127 /* Done FDIR Re-initialization, enable transmits */
5128 netif_tx_start_all_queues(adapter->netdev);
5129}
5130
John Fastabend10eec952010-02-03 14:23:32 +00005131static DEFINE_MUTEX(ixgbe_watchdog_lock);
5132
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005133/**
Alexander Duyck69888672008-09-11 20:05:39 -07005134 * ixgbe_watchdog_task - worker thread to bring link up
5135 * @work: pointer to work_struct containing our data
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005136 **/
5137static void ixgbe_watchdog_task(struct work_struct *work)
5138{
5139 struct ixgbe_adapter *adapter = container_of(work,
5140 struct ixgbe_adapter,
5141 watchdog_task);
5142 struct net_device *netdev = adapter->netdev;
5143 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend10eec952010-02-03 14:23:32 +00005144 u32 link_speed;
5145 bool link_up;
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005146 int i;
5147 struct ixgbe_ring *tx_ring;
5148 int some_tx_pending = 0;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005149
John Fastabend10eec952010-02-03 14:23:32 +00005150 mutex_lock(&ixgbe_watchdog_lock);
5151
5152 link_up = adapter->link_up;
5153 link_speed = adapter->link_speed;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005154
5155 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
5156 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005157 if (link_up) {
5158#ifdef CONFIG_DCB
5159 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5160 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005161 hw->mac.ops.fc_enable(hw, i);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005162 } else {
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005163 hw->mac.ops.fc_enable(hw, 0);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005164 }
5165#else
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005166 hw->mac.ops.fc_enable(hw, 0);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005167#endif
5168 }
5169
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005170 if (link_up ||
5171 time_after(jiffies, (adapter->link_check_timeout +
5172 IXGBE_TRY_LINK_TIMEOUT))) {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005173 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005174 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005175 }
5176 adapter->link_up = link_up;
5177 adapter->link_speed = link_speed;
5178 }
Auke Kok9a799d72007-09-15 14:07:45 -07005179
5180 if (link_up) {
5181 if (!netif_carrier_ok(netdev)) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005182 bool flow_rx, flow_tx;
5183
5184 if (hw->mac.type == ixgbe_mac_82599EB) {
5185 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
5186 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
Peter P Waskiewicz Jr078788b2009-07-16 15:50:32 +00005187 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
5188 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005189 } else {
5190 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5191 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
Peter P Waskiewicz Jr078788b2009-07-16 15:50:32 +00005192 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
5193 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005194 }
5195
Jeff Kirshera46e5342008-11-27 00:22:21 -08005196 printk(KERN_INFO "ixgbe: %s NIC Link is Up %s, "
5197 "Flow Control: %s\n",
5198 netdev->name,
5199 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
5200 "10 Gbps" :
5201 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
5202 "1 Gbps" : "unknown speed")),
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005203 ((flow_rx && flow_tx) ? "RX/TX" :
5204 (flow_rx ? "RX" :
5205 (flow_tx ? "TX" : "None"))));
Auke Kok9a799d72007-09-15 14:07:45 -07005206
5207 netif_carrier_on(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005208 } else {
5209 /* Force detection of hung controller */
5210 adapter->detect_tx_hung = true;
5211 }
5212 } else {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005213 adapter->link_up = false;
5214 adapter->link_speed = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005215 if (netif_carrier_ok(netdev)) {
Jeff Kirshera46e5342008-11-27 00:22:21 -08005216 printk(KERN_INFO "ixgbe: %s NIC Link is Down\n",
5217 netdev->name);
Auke Kok9a799d72007-09-15 14:07:45 -07005218 netif_carrier_off(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005219 }
5220 }
5221
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005222 if (!netif_carrier_ok(netdev)) {
5223 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005224 tx_ring = adapter->tx_ring[i];
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005225 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
5226 some_tx_pending = 1;
5227 break;
5228 }
5229 }
5230
5231 if (some_tx_pending) {
5232 /* We've lost link, so the controller stops DMA,
5233 * but we've got queued Tx work that's never going
5234 * to get done, so reset controller to flush Tx.
5235 * (Do the reset outside of interrupt context).
5236 */
5237 schedule_work(&adapter->reset_task);
5238 }
5239 }
5240
Auke Kok9a799d72007-09-15 14:07:45 -07005241 ixgbe_update_stats(adapter);
John Fastabend10eec952010-02-03 14:23:32 +00005242 mutex_unlock(&ixgbe_watchdog_lock);
Auke Kok9a799d72007-09-15 14:07:45 -07005243}
5244
Auke Kok9a799d72007-09-15 14:07:45 -07005245static int ixgbe_tso(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005246 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5247 u32 tx_flags, u8 *hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07005248{
5249 struct ixgbe_adv_tx_context_desc *context_desc;
5250 unsigned int i;
5251 int err;
5252 struct ixgbe_tx_buffer *tx_buffer_info;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005253 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
5254 u32 mss_l4len_idx, l4len;
Auke Kok9a799d72007-09-15 14:07:45 -07005255
5256 if (skb_is_gso(skb)) {
5257 if (skb_header_cloned(skb)) {
5258 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5259 if (err)
5260 return err;
5261 }
5262 l4len = tcp_hdrlen(skb);
5263 *hdr_len += l4len;
5264
Al Viro8327d002007-12-10 18:54:12 +00005265 if (skb->protocol == htons(ETH_P_IP)) {
Auke Kok9a799d72007-09-15 14:07:45 -07005266 struct iphdr *iph = ip_hdr(skb);
5267 iph->tot_len = 0;
5268 iph->check = 0;
5269 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005270 iph->daddr, 0,
5271 IPPROTO_TCP,
5272 0);
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08005273 } else if (skb_is_gso_v6(skb)) {
Auke Kok9a799d72007-09-15 14:07:45 -07005274 ipv6_hdr(skb)->payload_len = 0;
5275 tcp_hdr(skb)->check =
5276 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005277 &ipv6_hdr(skb)->daddr,
5278 0, IPPROTO_TCP, 0);
Auke Kok9a799d72007-09-15 14:07:45 -07005279 }
5280
5281 i = tx_ring->next_to_use;
5282
5283 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5284 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
5285
5286 /* VLAN MACLEN IPLEN */
5287 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5288 vlan_macip_lens |=
5289 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5290 vlan_macip_lens |= ((skb_network_offset(skb)) <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005291 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005292 *hdr_len += skb_network_offset(skb);
5293 vlan_macip_lens |=
5294 (skb_transport_header(skb) - skb_network_header(skb));
5295 *hdr_len +=
5296 (skb_transport_header(skb) - skb_network_header(skb));
5297 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5298 context_desc->seqnum_seed = 0;
5299
5300 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005301 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005302 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07005303
Al Viro8327d002007-12-10 18:54:12 +00005304 if (skb->protocol == htons(ETH_P_IP))
Auke Kok9a799d72007-09-15 14:07:45 -07005305 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5306 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5307 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5308
5309 /* MSS L4LEN IDX */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005310 mss_l4len_idx =
Auke Kok9a799d72007-09-15 14:07:45 -07005311 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
5312 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07005313 /* use index 1 for TSO */
5314 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005315 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
5316
5317 tx_buffer_info->time_stamp = jiffies;
5318 tx_buffer_info->next_to_watch = i;
5319
5320 i++;
5321 if (i == tx_ring->count)
5322 i = 0;
5323 tx_ring->next_to_use = i;
5324
5325 return true;
5326 }
5327 return false;
5328}
5329
5330static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005331 struct ixgbe_ring *tx_ring,
5332 struct sk_buff *skb, u32 tx_flags)
Auke Kok9a799d72007-09-15 14:07:45 -07005333{
5334 struct ixgbe_adv_tx_context_desc *context_desc;
5335 unsigned int i;
5336 struct ixgbe_tx_buffer *tx_buffer_info;
5337 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
5338
5339 if (skb->ip_summed == CHECKSUM_PARTIAL ||
5340 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
5341 i = tx_ring->next_to_use;
5342 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5343 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
5344
5345 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5346 vlan_macip_lens |=
5347 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5348 vlan_macip_lens |= (skb_network_offset(skb) <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005349 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005350 if (skb->ip_summed == CHECKSUM_PARTIAL)
5351 vlan_macip_lens |= (skb_transport_header(skb) -
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005352 skb_network_header(skb));
Auke Kok9a799d72007-09-15 14:07:45 -07005353
5354 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5355 context_desc->seqnum_seed = 0;
5356
5357 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005358 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07005359
5360 if (skb->ip_summed == CHECKSUM_PARTIAL) {
Gurucharan Shettyca553982009-12-15 13:00:31 +00005361 __be16 protocol;
5362
5363 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) {
5364 const struct vlan_ethhdr *vhdr =
5365 (const struct vlan_ethhdr *)skb->data;
5366
5367 protocol = vhdr->h_vlan_encapsulated_proto;
5368 } else {
5369 protocol = skb->protocol;
5370 }
5371
5372 switch (protocol) {
Harvey Harrison09640e632009-02-01 00:45:17 -08005373 case cpu_to_be16(ETH_P_IP):
Auke Kok9a799d72007-09-15 14:07:45 -07005374 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
Auke Kok41825d72008-02-12 15:20:33 -08005375 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
5376 type_tucmd_mlhl |=
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005377 IXGBE_ADVTXD_TUCMD_L4T_TCP;
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00005378 else if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
5379 type_tucmd_mlhl |=
5380 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
Auke Kok41825d72008-02-12 15:20:33 -08005381 break;
Harvey Harrison09640e632009-02-01 00:45:17 -08005382 case cpu_to_be16(ETH_P_IPV6):
Auke Kok41825d72008-02-12 15:20:33 -08005383 /* XXX what about other V6 headers?? */
5384 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
5385 type_tucmd_mlhl |=
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005386 IXGBE_ADVTXD_TUCMD_L4T_TCP;
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00005387 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP)
5388 type_tucmd_mlhl |=
5389 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
Auke Kok41825d72008-02-12 15:20:33 -08005390 break;
Auke Kok41825d72008-02-12 15:20:33 -08005391 default:
5392 if (unlikely(net_ratelimit())) {
5393 DPRINTK(PROBE, WARNING,
5394 "partial checksum but proto=%x!\n",
5395 skb->protocol);
5396 }
5397 break;
5398 }
Auke Kok9a799d72007-09-15 14:07:45 -07005399 }
5400
5401 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07005402 /* use index zero for tx checksum offload */
Auke Kok9a799d72007-09-15 14:07:45 -07005403 context_desc->mss_l4len_idx = 0;
5404
5405 tx_buffer_info->time_stamp = jiffies;
5406 tx_buffer_info->next_to_watch = i;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005407
Auke Kok9a799d72007-09-15 14:07:45 -07005408 i++;
5409 if (i == tx_ring->count)
5410 i = 0;
5411 tx_ring->next_to_use = i;
5412
5413 return true;
5414 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005415
Auke Kok9a799d72007-09-15 14:07:45 -07005416 return false;
5417}
5418
5419static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005420 struct ixgbe_ring *tx_ring,
Yi Zoueacd73f2009-05-13 13:11:06 +00005421 struct sk_buff *skb, u32 tx_flags,
5422 unsigned int first)
Auke Kok9a799d72007-09-15 14:07:45 -07005423{
Alexander Duycke5a43542009-12-02 16:46:56 +00005424 struct pci_dev *pdev = adapter->pdev;
Auke Kok9a799d72007-09-15 14:07:45 -07005425 struct ixgbe_tx_buffer *tx_buffer_info;
Yi Zoueacd73f2009-05-13 13:11:06 +00005426 unsigned int len;
5427 unsigned int total = skb->len;
Auke Kok9a799d72007-09-15 14:07:45 -07005428 unsigned int offset = 0, size, count = 0, i;
5429 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
5430 unsigned int f;
Auke Kok9a799d72007-09-15 14:07:45 -07005431
5432 i = tx_ring->next_to_use;
5433
Yi Zoueacd73f2009-05-13 13:11:06 +00005434 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
5435 /* excluding fcoe_crc_eof for FCoE */
5436 total -= sizeof(struct fcoe_crc_eof);
5437
5438 len = min(skb_headlen(skb), total);
Auke Kok9a799d72007-09-15 14:07:45 -07005439 while (len) {
5440 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5441 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5442
5443 tx_buffer_info->length = size;
Alexander Duycke5a43542009-12-02 16:46:56 +00005444 tx_buffer_info->mapped_as_page = false;
5445 tx_buffer_info->dma = pci_map_single(pdev,
5446 skb->data + offset,
5447 size, PCI_DMA_TODEVICE);
5448 if (pci_dma_mapping_error(pdev, tx_buffer_info->dma))
5449 goto dma_error;
Auke Kok9a799d72007-09-15 14:07:45 -07005450 tx_buffer_info->time_stamp = jiffies;
5451 tx_buffer_info->next_to_watch = i;
5452
5453 len -= size;
Yi Zoueacd73f2009-05-13 13:11:06 +00005454 total -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07005455 offset += size;
5456 count++;
Alexander Duyck44df32c2009-03-31 21:34:23 +00005457
5458 if (len) {
5459 i++;
5460 if (i == tx_ring->count)
5461 i = 0;
5462 }
Auke Kok9a799d72007-09-15 14:07:45 -07005463 }
5464
5465 for (f = 0; f < nr_frags; f++) {
5466 struct skb_frag_struct *frag;
5467
5468 frag = &skb_shinfo(skb)->frags[f];
Yi Zoueacd73f2009-05-13 13:11:06 +00005469 len = min((unsigned int)frag->size, total);
Alexander Duycke5a43542009-12-02 16:46:56 +00005470 offset = frag->page_offset;
Auke Kok9a799d72007-09-15 14:07:45 -07005471
5472 while (len) {
Alexander Duyck44df32c2009-03-31 21:34:23 +00005473 i++;
5474 if (i == tx_ring->count)
5475 i = 0;
5476
Auke Kok9a799d72007-09-15 14:07:45 -07005477 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5478 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5479
5480 tx_buffer_info->length = size;
Alexander Duycke5a43542009-12-02 16:46:56 +00005481 tx_buffer_info->dma = pci_map_page(adapter->pdev,
5482 frag->page,
5483 offset, size,
5484 PCI_DMA_TODEVICE);
5485 tx_buffer_info->mapped_as_page = true;
5486 if (pci_dma_mapping_error(pdev, tx_buffer_info->dma))
5487 goto dma_error;
Auke Kok9a799d72007-09-15 14:07:45 -07005488 tx_buffer_info->time_stamp = jiffies;
5489 tx_buffer_info->next_to_watch = i;
5490
5491 len -= size;
Yi Zoueacd73f2009-05-13 13:11:06 +00005492 total -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07005493 offset += size;
5494 count++;
Auke Kok9a799d72007-09-15 14:07:45 -07005495 }
Yi Zoueacd73f2009-05-13 13:11:06 +00005496 if (total == 0)
5497 break;
Auke Kok9a799d72007-09-15 14:07:45 -07005498 }
Alexander Duyck44df32c2009-03-31 21:34:23 +00005499
Auke Kok9a799d72007-09-15 14:07:45 -07005500 tx_ring->tx_buffer_info[i].skb = skb;
5501 tx_ring->tx_buffer_info[first].next_to_watch = i;
5502
5503 return count;
Alexander Duycke5a43542009-12-02 16:46:56 +00005504
5505dma_error:
5506 dev_err(&pdev->dev, "TX DMA map failed\n");
5507
5508 /* clear timestamp and dma mappings for failed tx_buffer_info map */
5509 tx_buffer_info->dma = 0;
5510 tx_buffer_info->time_stamp = 0;
5511 tx_buffer_info->next_to_watch = 0;
Roel Kluinc1fa3472010-01-19 14:21:45 +00005512 if (count)
5513 count--;
Alexander Duycke5a43542009-12-02 16:46:56 +00005514
5515 /* clear timestamp and dma mappings for remaining portion of packet */
Roel Kluinc1fa3472010-01-19 14:21:45 +00005516 while (count--) {
5517 if (i==0)
Alexander Duycke5a43542009-12-02 16:46:56 +00005518 i += tx_ring->count;
Roel Kluinc1fa3472010-01-19 14:21:45 +00005519 i--;
Alexander Duycke5a43542009-12-02 16:46:56 +00005520 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5521 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
5522 }
5523
Anton Blancharde44d38e2010-02-03 13:12:51 +00005524 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005525}
5526
5527static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005528 struct ixgbe_ring *tx_ring,
5529 int tx_flags, int count, u32 paylen, u8 hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07005530{
5531 union ixgbe_adv_tx_desc *tx_desc = NULL;
5532 struct ixgbe_tx_buffer *tx_buffer_info;
5533 u32 olinfo_status = 0, cmd_type_len = 0;
5534 unsigned int i;
5535 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
5536
5537 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
5538
5539 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
5540
5541 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5542 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
5543
5544 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
5545 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
5546
5547 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005548 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07005549
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07005550 /* use index 1 context for tso */
5551 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005552 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
5553 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005554 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07005555
5556 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
5557 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005558 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07005559
Yi Zoueacd73f2009-05-13 13:11:06 +00005560 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
5561 olinfo_status |= IXGBE_ADVTXD_CC;
5562 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
5563 if (tx_flags & IXGBE_TX_FLAGS_FSO)
5564 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
5565 }
5566
Auke Kok9a799d72007-09-15 14:07:45 -07005567 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
5568
5569 i = tx_ring->next_to_use;
5570 while (count--) {
5571 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5572 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
5573 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
5574 tx_desc->read.cmd_type_len =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005575 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
Auke Kok9a799d72007-09-15 14:07:45 -07005576 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Auke Kok9a799d72007-09-15 14:07:45 -07005577 i++;
5578 if (i == tx_ring->count)
5579 i = 0;
5580 }
5581
5582 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
5583
5584 /*
5585 * Force memory writes to complete before letting h/w
5586 * know there are new descriptors to fetch. (Only
5587 * applicable for weak-ordered memory model archs,
5588 * such as IA-64).
5589 */
5590 wmb();
5591
5592 tx_ring->next_to_use = i;
5593 writel(i, adapter->hw.hw_addr + tx_ring->tail);
5594}
5595
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005596static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5597 int queue, u32 tx_flags)
5598{
5599 /* Right now, we support IPv4 only */
5600 struct ixgbe_atr_input atr_input;
5601 struct tcphdr *th;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005602 struct iphdr *iph = ip_hdr(skb);
5603 struct ethhdr *eth = (struct ethhdr *)skb->data;
5604 u16 vlan_id, src_port, dst_port, flex_bytes;
5605 u32 src_ipv4_addr, dst_ipv4_addr;
5606 u8 l4type = 0;
5607
5608 /* check if we're UDP or TCP */
5609 if (iph->protocol == IPPROTO_TCP) {
5610 th = tcp_hdr(skb);
5611 src_port = th->source;
5612 dst_port = th->dest;
5613 l4type |= IXGBE_ATR_L4TYPE_TCP;
5614 /* l4type IPv4 type is 0, no need to assign */
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005615 } else {
5616 /* Unsupported L4 header, just bail here */
5617 return;
5618 }
5619
5620 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
5621
5622 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
5623 IXGBE_TX_FLAGS_VLAN_SHIFT;
5624 src_ipv4_addr = iph->saddr;
5625 dst_ipv4_addr = iph->daddr;
5626 flex_bytes = eth->h_proto;
5627
5628 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
5629 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
5630 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
5631 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
5632 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
5633 /* src and dst are inverted, think how the receiver sees them */
5634 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
5635 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
5636
5637 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
5638 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
5639}
5640
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005641static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005642 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005643{
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08005644 netif_stop_subqueue(netdev, tx_ring->queue_index);
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005645 /* Herbert's original patch had:
5646 * smp_mb__after_netif_stop_queue();
5647 * but since that doesn't exist yet, just open code it. */
5648 smp_mb();
5649
5650 /* We need to check again in a case another CPU has just
5651 * made room available. */
5652 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
5653 return -EBUSY;
5654
5655 /* A reprieve! - use start_queue because it doesn't call schedule */
Jesse Brandeburgaf721662008-09-11 19:54:23 -07005656 netif_start_subqueue(netdev, tx_ring->queue_index);
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00005657 ++tx_ring->restart_queue;
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005658 return 0;
5659}
5660
5661static int ixgbe_maybe_stop_tx(struct net_device *netdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005662 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005663{
5664 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
5665 return 0;
5666 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
5667}
5668
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07005669static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
5670{
5671 struct ixgbe_adapter *adapter = netdev_priv(dev);
Yi Zou5f715822009-12-03 11:32:44 +00005672 int txq = smp_processor_id();
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07005673
Krishna Kumarfdd3d632010-02-03 13:13:10 +00005674 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
5675 while (unlikely(txq >= dev->real_num_tx_queues))
5676 txq -= dev->real_num_tx_queues;
Yi Zou5f715822009-12-03 11:32:44 +00005677 return txq;
Krishna Kumarfdd3d632010-02-03 13:13:10 +00005678 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005679
Yi Zou5f715822009-12-03 11:32:44 +00005680#ifdef IXGBE_FCOE
5681 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
Robert Loveca77cd52010-03-24 12:45:00 +00005682 ((skb->protocol == htons(ETH_P_FCOE)) ||
5683 (skb->protocol == htons(ETH_P_FIP)))) {
Yi Zou5f715822009-12-03 11:32:44 +00005684 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
5685 txq += adapter->ring_feature[RING_F_FCOE].mask;
5686 return txq;
5687 }
5688#endif
John Fastabend2ea186a2010-02-27 03:28:24 -08005689 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5690 if (skb->priority == TC_PRIO_CONTROL)
5691 txq = adapter->ring_feature[RING_F_DCB].indices-1;
5692 else
5693 txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK)
5694 >> 13;
5695 return txq;
5696 }
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07005697
5698 return skb_tx_hash(dev, skb);
5699}
5700
Stephen Hemminger3b29a562009-08-31 19:50:55 +00005701static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
5702 struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07005703{
5704 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5705 struct ixgbe_ring *tx_ring;
Eric Dumazet60d51132009-12-08 07:22:03 +00005706 struct netdev_queue *txq;
Auke Kok9a799d72007-09-15 14:07:45 -07005707 unsigned int first;
5708 unsigned int tx_flags = 0;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08005709 u8 hdr_len = 0;
Yi Zou5f715822009-12-03 11:32:44 +00005710 int tso;
Auke Kok9a799d72007-09-15 14:07:45 -07005711 int count = 0;
5712 unsigned int f;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005713
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005714 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
5715 tx_flags |= vlan_tx_tag_get(skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -08005716 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5717 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
Yi Zou5f715822009-12-03 11:32:44 +00005718 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
Alexander Duyck2f90b862008-11-20 20:52:10 -08005719 }
5720 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
5721 tx_flags |= IXGBE_TX_FLAGS_VLAN;
5722 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
John Fastabend2ea186a2010-02-27 03:28:24 -08005723 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
5724 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
5725 tx_flags |= IXGBE_TX_FLAGS_VLAN;
Auke Kok9a799d72007-09-15 14:07:45 -07005726 }
Yi Zoueacd73f2009-05-13 13:11:06 +00005727
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005728 tx_ring = adapter->tx_ring[skb->queue_mapping];
Lucy Liu60127862009-07-22 14:07:33 +00005729
Yi Zou09ad1cc2009-09-03 14:56:10 +00005730#ifdef IXGBE_FCOE
Robert Loveca77cd52010-03-24 12:45:00 +00005731 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
Yi Zou61a0f422009-12-03 11:32:22 +00005732#ifdef CONFIG_IXGBE_DCB
Robert Loveca77cd52010-03-24 12:45:00 +00005733 /* for FCoE with DCB, we force the priority to what
5734 * was specified by the switch */
5735 if ((skb->protocol == htons(ETH_P_FCOE)) ||
5736 (skb->protocol == htons(ETH_P_FIP))) {
5737 tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
5738 << IXGBE_TX_FLAGS_VLAN_SHIFT);
5739 tx_flags |= ((adapter->fcoe.up << 13)
5740 << IXGBE_TX_FLAGS_VLAN_SHIFT);
5741 }
Yi Zou61a0f422009-12-03 11:32:22 +00005742#endif
Robert Loveca77cd52010-03-24 12:45:00 +00005743 /* flag for FCoE offloads */
5744 if (skb->protocol == htons(ETH_P_FCOE))
5745 tx_flags |= IXGBE_TX_FLAGS_FCOE;
Yi Zou09ad1cc2009-09-03 14:56:10 +00005746 }
Robert Loveca77cd52010-03-24 12:45:00 +00005747#endif
5748
Yi Zoueacd73f2009-05-13 13:11:06 +00005749 /* four things can cause us to need a context descriptor */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005750 if (skb_is_gso(skb) ||
5751 (skb->ip_summed == CHECKSUM_PARTIAL) ||
Yi Zoueacd73f2009-05-13 13:11:06 +00005752 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
5753 (tx_flags & IXGBE_TX_FLAGS_FCOE))
Auke Kok9a799d72007-09-15 14:07:45 -07005754 count++;
5755
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005756 count += TXD_USE_COUNT(skb_headlen(skb));
5757 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
Auke Kok9a799d72007-09-15 14:07:45 -07005758 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
5759
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08005760 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
Auke Kok9a799d72007-09-15 14:07:45 -07005761 adapter->tx_busy++;
Auke Kok9a799d72007-09-15 14:07:45 -07005762 return NETDEV_TX_BUSY;
5763 }
Auke Kok9a799d72007-09-15 14:07:45 -07005764
Auke Kok9a799d72007-09-15 14:07:45 -07005765 first = tx_ring->next_to_use;
Yi Zoueacd73f2009-05-13 13:11:06 +00005766 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
5767#ifdef IXGBE_FCOE
5768 /* setup tx offload for FCoE */
5769 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
5770 if (tso < 0) {
5771 dev_kfree_skb_any(skb);
5772 return NETDEV_TX_OK;
5773 }
5774 if (tso)
5775 tx_flags |= IXGBE_TX_FLAGS_FSO;
5776#endif /* IXGBE_FCOE */
5777 } else {
5778 if (skb->protocol == htons(ETH_P_IP))
5779 tx_flags |= IXGBE_TX_FLAGS_IPV4;
5780 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
5781 if (tso < 0) {
5782 dev_kfree_skb_any(skb);
5783 return NETDEV_TX_OK;
5784 }
5785
5786 if (tso)
5787 tx_flags |= IXGBE_TX_FLAGS_TSO;
5788 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
5789 (skb->ip_summed == CHECKSUM_PARTIAL))
5790 tx_flags |= IXGBE_TX_FLAGS_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07005791 }
5792
Yi Zoueacd73f2009-05-13 13:11:06 +00005793 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
Alexander Duyck44df32c2009-03-31 21:34:23 +00005794 if (count) {
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005795 /* add the ATR filter if ATR is on */
5796 if (tx_ring->atr_sample_rate) {
5797 ++tx_ring->atr_count;
5798 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
5799 test_bit(__IXGBE_FDIR_INIT_DONE,
5800 &tx_ring->reinit_state)) {
5801 ixgbe_atr(adapter, skb, tx_ring->queue_index,
5802 tx_flags);
5803 tx_ring->atr_count = 0;
5804 }
5805 }
Eric Dumazet60d51132009-12-08 07:22:03 +00005806 txq = netdev_get_tx_queue(netdev, tx_ring->queue_index);
5807 txq->tx_bytes += skb->len;
5808 txq->tx_packets++;
Alexander Duyck44df32c2009-03-31 21:34:23 +00005809 ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
5810 hdr_len);
Alexander Duyck44df32c2009-03-31 21:34:23 +00005811 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
Auke Kok9a799d72007-09-15 14:07:45 -07005812
Alexander Duyck44df32c2009-03-31 21:34:23 +00005813 } else {
5814 dev_kfree_skb_any(skb);
5815 tx_ring->tx_buffer_info[first].time_stamp = 0;
5816 tx_ring->next_to_use = first;
5817 }
Auke Kok9a799d72007-09-15 14:07:45 -07005818
5819 return NETDEV_TX_OK;
5820}
5821
5822/**
Auke Kok9a799d72007-09-15 14:07:45 -07005823 * ixgbe_set_mac - Change the Ethernet Address of the NIC
5824 * @netdev: network interface device structure
5825 * @p: pointer to an address structure
5826 *
5827 * Returns 0 on success, negative on failure
5828 **/
5829static int ixgbe_set_mac(struct net_device *netdev, void *p)
5830{
5831 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005832 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07005833 struct sockaddr *addr = p;
5834
5835 if (!is_valid_ether_addr(addr->sa_data))
5836 return -EADDRNOTAVAIL;
5837
5838 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005839 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07005840
Greg Rose1cdd1ec2010-01-09 02:26:46 +00005841 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
5842 IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07005843
5844 return 0;
5845}
5846
Ben Hutchings6b73e102009-04-29 08:08:58 +00005847static int
5848ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
5849{
5850 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5851 struct ixgbe_hw *hw = &adapter->hw;
5852 u16 value;
5853 int rc;
5854
5855 if (prtad != hw->phy.mdio.prtad)
5856 return -EINVAL;
5857 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
5858 if (!rc)
5859 rc = value;
5860 return rc;
5861}
5862
5863static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
5864 u16 addr, u16 value)
5865{
5866 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5867 struct ixgbe_hw *hw = &adapter->hw;
5868
5869 if (prtad != hw->phy.mdio.prtad)
5870 return -EINVAL;
5871 return hw->phy.ops.write_reg(hw, addr, devad, value);
5872}
5873
5874static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
5875{
5876 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5877
5878 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
5879}
5880
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00005881/**
5882 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00005883 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00005884 * @netdev: network interface device structure
5885 *
5886 * Returns non-zero on failure
5887 **/
5888static int ixgbe_add_sanmac_netdev(struct net_device *dev)
5889{
5890 int err = 0;
5891 struct ixgbe_adapter *adapter = netdev_priv(dev);
5892 struct ixgbe_mac_info *mac = &adapter->hw.mac;
5893
5894 if (is_valid_ether_addr(mac->san_addr)) {
5895 rtnl_lock();
5896 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
5897 rtnl_unlock();
5898 }
5899 return err;
5900}
5901
5902/**
5903 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00005904 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00005905 * @netdev: network interface device structure
5906 *
5907 * Returns non-zero on failure
5908 **/
5909static int ixgbe_del_sanmac_netdev(struct net_device *dev)
5910{
5911 int err = 0;
5912 struct ixgbe_adapter *adapter = netdev_priv(dev);
5913 struct ixgbe_mac_info *mac = &adapter->hw.mac;
5914
5915 if (is_valid_ether_addr(mac->san_addr)) {
5916 rtnl_lock();
5917 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
5918 rtnl_unlock();
5919 }
5920 return err;
5921}
5922
Auke Kok9a799d72007-09-15 14:07:45 -07005923#ifdef CONFIG_NET_POLL_CONTROLLER
5924/*
5925 * Polling 'interrupt' - used by things like netconsole to send skbs
5926 * without having to re-enable interrupts. It's not called while
5927 * the interrupt routine is executing.
5928 */
5929static void ixgbe_netpoll(struct net_device *netdev)
5930{
5931 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00005932 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07005933
Alexander Duyck1a647bd2010-01-13 01:49:13 +00005934 /* if interface is down do nothing */
5935 if (test_bit(__IXGBE_DOWN, &adapter->state))
5936 return;
5937
Auke Kok9a799d72007-09-15 14:07:45 -07005938 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00005939 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
5940 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
5941 for (i = 0; i < num_q_vectors; i++) {
5942 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
5943 ixgbe_msix_clean_many(0, q_vector);
5944 }
5945 } else {
5946 ixgbe_intr(adapter->pdev->irq, netdev);
5947 }
Auke Kok9a799d72007-09-15 14:07:45 -07005948 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
Auke Kok9a799d72007-09-15 14:07:45 -07005949}
5950#endif
5951
Stephen Hemminger0edc3522008-11-19 22:24:29 -08005952static const struct net_device_ops ixgbe_netdev_ops = {
5953 .ndo_open = ixgbe_open,
5954 .ndo_stop = ixgbe_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08005955 .ndo_start_xmit = ixgbe_xmit_frame,
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07005956 .ndo_select_queue = ixgbe_select_queue,
Chris Leeche90d4002009-03-10 16:00:24 +00005957 .ndo_set_rx_mode = ixgbe_set_rx_mode,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08005958 .ndo_set_multicast_list = ixgbe_set_rx_mode,
5959 .ndo_validate_addr = eth_validate_addr,
5960 .ndo_set_mac_address = ixgbe_set_mac,
5961 .ndo_change_mtu = ixgbe_change_mtu,
5962 .ndo_tx_timeout = ixgbe_tx_timeout,
5963 .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
5964 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
5965 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
Ben Hutchings6b73e102009-04-29 08:08:58 +00005966 .ndo_do_ioctl = ixgbe_ioctl,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08005967#ifdef CONFIG_NET_POLL_CONTROLLER
5968 .ndo_poll_controller = ixgbe_netpoll,
5969#endif
Yi Zou332d4a72009-05-13 13:11:53 +00005970#ifdef IXGBE_FCOE
5971 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
5972 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
Yi Zou8450ff82009-08-31 12:32:14 +00005973 .ndo_fcoe_enable = ixgbe_fcoe_enable,
5974 .ndo_fcoe_disable = ixgbe_fcoe_disable,
Yi Zou61a1fa12009-10-28 18:24:56 +00005975 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
Yi Zou332d4a72009-05-13 13:11:53 +00005976#endif /* IXGBE_FCOE */
Stephen Hemminger0edc3522008-11-19 22:24:29 -08005977};
5978
Greg Rose1cdd1ec2010-01-09 02:26:46 +00005979static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
5980 const struct ixgbe_info *ii)
5981{
5982#ifdef CONFIG_PCI_IOV
5983 struct ixgbe_hw *hw = &adapter->hw;
5984 int err;
5985
5986 if (hw->mac.type != ixgbe_mac_82599EB || !max_vfs)
5987 return;
5988
5989 /* The 82599 supports up to 64 VFs per physical function
5990 * but this implementation limits allocation to 63 so that
5991 * basic networking resources are still available to the
5992 * physical function
5993 */
5994 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
5995 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
5996 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
5997 if (err) {
5998 DPRINTK(PROBE, ERR,
5999 "Failed to enable PCI sriov: %d\n", err);
6000 goto err_novfs;
6001 }
6002 /* If call to enable VFs succeeded then allocate memory
6003 * for per VF control structures.
6004 */
6005 adapter->vfinfo =
6006 kcalloc(adapter->num_vfs,
6007 sizeof(struct vf_data_storage), GFP_KERNEL);
6008 if (adapter->vfinfo) {
6009 /* Now that we're sure SR-IOV is enabled
6010 * and memory allocated set up the mailbox parameters
6011 */
6012 ixgbe_init_mbx_params_pf(hw);
6013 memcpy(&hw->mbx.ops, ii->mbx_ops,
6014 sizeof(hw->mbx.ops));
6015
6016 /* Disable RSC when in SR-IOV mode */
6017 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
6018 IXGBE_FLAG2_RSC_ENABLED);
6019 return;
6020 }
6021
6022 /* Oh oh */
6023 DPRINTK(PROBE, ERR,
6024 "Unable to allocate memory for VF "
6025 "Data Storage - SRIOV disabled\n");
6026 pci_disable_sriov(adapter->pdev);
6027
6028err_novfs:
6029 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
6030 adapter->num_vfs = 0;
6031#endif /* CONFIG_PCI_IOV */
6032}
6033
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006034/**
Auke Kok9a799d72007-09-15 14:07:45 -07006035 * ixgbe_probe - Device Initialization Routine
6036 * @pdev: PCI device information struct
6037 * @ent: entry in ixgbe_pci_tbl
6038 *
6039 * Returns 0 on success, negative on failure
6040 *
6041 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6042 * The OS initialization, configuring of the adapter private structure,
6043 * and a hardware reset occur.
6044 **/
6045static int __devinit ixgbe_probe(struct pci_dev *pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006046 const struct pci_device_id *ent)
Auke Kok9a799d72007-09-15 14:07:45 -07006047{
6048 struct net_device *netdev;
6049 struct ixgbe_adapter *adapter = NULL;
6050 struct ixgbe_hw *hw;
6051 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
Auke Kok9a799d72007-09-15 14:07:45 -07006052 static int cards_found;
6053 int i, err, pci_using_dac;
John Fastabendc85a2612010-02-25 23:15:21 +00006054 unsigned int indices = num_possible_cpus();
Yi Zoueacd73f2009-05-13 13:11:06 +00006055#ifdef IXGBE_FCOE
6056 u16 device_caps;
6057#endif
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006058 u32 part_num, eec;
Auke Kok9a799d72007-09-15 14:07:45 -07006059
gouji-new9ce77662009-05-06 10:44:45 +00006060 err = pci_enable_device_mem(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006061 if (err)
6062 return err;
6063
Yang Hongyang6a355282009-04-06 19:01:13 -07006064 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
6065 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
Auke Kok9a799d72007-09-15 14:07:45 -07006066 pci_using_dac = 1;
6067 } else {
Yang Hongyang284901a2009-04-06 19:01:15 -07006068 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -07006069 if (err) {
Yang Hongyang284901a2009-04-06 19:01:15 -07006070 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -07006071 if (err) {
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006072 dev_err(&pdev->dev, "No usable DMA "
6073 "configuration, aborting\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006074 goto err_dma;
6075 }
6076 }
6077 pci_using_dac = 0;
6078 }
6079
gouji-new9ce77662009-05-06 10:44:45 +00006080 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
6081 IORESOURCE_MEM), ixgbe_driver_name);
Auke Kok9a799d72007-09-15 14:07:45 -07006082 if (err) {
gouji-new9ce77662009-05-06 10:44:45 +00006083 dev_err(&pdev->dev,
6084 "pci_request_selected_regions failed 0x%x\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07006085 goto err_pci_reg;
6086 }
6087
Frans Pop19d5afd2009-10-02 10:04:12 -07006088 pci_enable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006089
Auke Kok9a799d72007-09-15 14:07:45 -07006090 pci_set_master(pdev);
Wendy Xiongfb3b27b2008-04-23 11:09:24 -07006091 pci_save_state(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006092
John Fastabendc85a2612010-02-25 23:15:21 +00006093 if (ii->mac == ixgbe_mac_82598EB)
6094 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
6095 else
6096 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
6097
6098 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
6099#ifdef IXGBE_FCOE
6100 indices += min_t(unsigned int, num_possible_cpus(),
6101 IXGBE_MAX_FCOE_INDICES);
6102#endif
John Fastabendc85a2612010-02-25 23:15:21 +00006103 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
Auke Kok9a799d72007-09-15 14:07:45 -07006104 if (!netdev) {
6105 err = -ENOMEM;
6106 goto err_alloc_etherdev;
6107 }
6108
Auke Kok9a799d72007-09-15 14:07:45 -07006109 SET_NETDEV_DEV(netdev, &pdev->dev);
6110
6111 pci_set_drvdata(pdev, netdev);
6112 adapter = netdev_priv(netdev);
6113
6114 adapter->netdev = netdev;
6115 adapter->pdev = pdev;
6116 hw = &adapter->hw;
6117 hw->back = adapter;
6118 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
6119
Jeff Kirsher05857982008-09-11 19:57:00 -07006120 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
6121 pci_resource_len(pdev, 0));
Auke Kok9a799d72007-09-15 14:07:45 -07006122 if (!hw->hw_addr) {
6123 err = -EIO;
6124 goto err_ioremap;
6125 }
6126
6127 for (i = 1; i <= 5; i++) {
6128 if (pci_resource_len(pdev, i) == 0)
6129 continue;
6130 }
6131
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006132 netdev->netdev_ops = &ixgbe_netdev_ops;
Auke Kok9a799d72007-09-15 14:07:45 -07006133 ixgbe_set_ethtool_ops(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006134 netdev->watchdog_timeo = 5 * HZ;
Auke Kok9a799d72007-09-15 14:07:45 -07006135 strcpy(netdev->name, pci_name(pdev));
6136
Auke Kok9a799d72007-09-15 14:07:45 -07006137 adapter->bd_number = cards_found;
6138
Auke Kok9a799d72007-09-15 14:07:45 -07006139 /* Setup hw api */
6140 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006141 hw->mac.type = ii->mac;
Auke Kok9a799d72007-09-15 14:07:45 -07006142
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006143 /* EEPROM */
6144 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
6145 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
6146 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6147 if (!(eec & (1 << 8)))
6148 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
6149
6150 /* PHY */
6151 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
Donald Skidmorec4900be2008-11-20 21:11:42 -08006152 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
Ben Hutchings6b73e102009-04-29 08:08:58 +00006153 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6154 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
6155 hw->phy.mdio.mmds = 0;
6156 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
6157 hw->phy.mdio.dev = netdev;
6158 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
6159 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
Donald Skidmorec4900be2008-11-20 21:11:42 -08006160
6161 /* set up this timer and work struct before calling get_invariants
6162 * which might start the timer
6163 */
6164 init_timer(&adapter->sfp_timer);
6165 adapter->sfp_timer.function = &ixgbe_sfp_timer;
6166 adapter->sfp_timer.data = (unsigned long) adapter;
6167
6168 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006169
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006170 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6171 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
6172
6173 /* a new SFP+ module arrival, called from GPI SDP2 context */
6174 INIT_WORK(&adapter->sfp_config_module_task,
6175 ixgbe_sfp_config_module_task);
6176
Don Skidmore8ca783a2009-05-26 20:40:47 -07006177 ii->get_invariants(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07006178
6179 /* setup the private structure */
6180 err = ixgbe_sw_init(adapter);
6181 if (err)
6182 goto err_sw_init;
6183
Don Skidmoree86bff02010-02-11 04:14:08 +00006184 /* Make it possible the adapter to be woken up via WOL */
6185 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6186 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6187
Don Skidmorebf069c92009-05-07 10:39:54 +00006188 /*
6189 * If there is a fan on this device and it has failed log the
6190 * failure.
6191 */
6192 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
6193 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
6194 if (esdp & IXGBE_ESDP_SDP1)
6195 DPRINTK(PROBE, CRIT,
6196 "Fan has stopped, replace the adapter\n");
6197 }
6198
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006199 /* reset_hw fills in the perm_addr as well */
6200 err = hw->mac.ops.reset_hw(hw);
Don Skidmore8ca783a2009-05-26 20:40:47 -07006201 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
6202 hw->mac.type == ixgbe_mac_82598EB) {
6203 /*
6204 * Start a kernel thread to watch for a module to arrive.
6205 * Only do this for 82598, since 82599 will generate
6206 * interrupts on module arrival.
6207 */
6208 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6209 mod_timer(&adapter->sfp_timer,
6210 round_jiffies(jiffies + (2 * HZ)));
6211 err = 0;
6212 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore88d2b812009-06-30 11:43:55 +00006213 dev_err(&adapter->pdev->dev, "failed to initialize because "
6214 "an unsupported SFP+ module type was detected.\n"
6215 "Reload the driver after installing a supported "
6216 "module.\n");
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00006217 goto err_sw_init;
6218 } else if (err) {
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006219 dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err);
6220 goto err_sw_init;
6221 }
6222
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006223 ixgbe_probe_vf(adapter, ii);
6224
Auke Kok9a799d72007-09-15 14:07:45 -07006225 netdev->features = NETIF_F_SG |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006226 NETIF_F_IP_CSUM |
6227 NETIF_F_HW_VLAN_TX |
6228 NETIF_F_HW_VLAN_RX |
6229 NETIF_F_HW_VLAN_FILTER;
Auke Kok9a799d72007-09-15 14:07:45 -07006230
Jesse Brandeburge9990a92008-08-26 04:27:24 -07006231 netdev->features |= NETIF_F_IPV6_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07006232 netdev->features |= NETIF_F_TSO;
Auke Kok9a799d72007-09-15 14:07:45 -07006233 netdev->features |= NETIF_F_TSO6;
Herbert Xu78b6f4c2009-01-18 21:49:45 -08006234 netdev->features |= NETIF_F_GRO;
Jeff Kirsherad31c402008-06-05 04:05:30 -07006235
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00006236 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6237 netdev->features |= NETIF_F_SCTP_CSUM;
6238
Jeff Kirsherad31c402008-06-05 04:05:30 -07006239 netdev->vlan_features |= NETIF_F_TSO;
6240 netdev->vlan_features |= NETIF_F_TSO6;
Jesse Brandeburg22f32b7a52008-08-26 04:27:18 -07006241 netdev->vlan_features |= NETIF_F_IP_CSUM;
Alexander Duyckcd1da502009-08-25 04:47:50 +00006242 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
Jeff Kirsherad31c402008-06-05 04:05:30 -07006243 netdev->vlan_features |= NETIF_F_SG;
6244
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006245 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6246 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
6247 IXGBE_FLAG_DCB_ENABLED);
Alexander Duyck2f90b862008-11-20 20:52:10 -08006248 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
6249 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
6250
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08006251#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08006252 netdev->dcbnl_ops = &dcbnl_ops;
6253#endif
6254
Yi Zoueacd73f2009-05-13 13:11:06 +00006255#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +00006256 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
Yi Zoueacd73f2009-05-13 13:11:06 +00006257 if (hw->mac.ops.get_device_caps) {
6258 hw->mac.ops.get_device_caps(hw, &device_caps);
Yi Zou0d551582009-07-22 14:07:12 +00006259 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
6260 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
Yi Zoueacd73f2009-05-13 13:11:06 +00006261 }
6262 }
6263#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -07006264 if (pci_using_dac)
6265 netdev->features |= NETIF_F_HIGHDMA;
6266
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00006267 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Alexander Duyckf8212f92009-04-27 22:42:37 +00006268 netdev->features |= NETIF_F_LRO;
6269
Auke Kok9a799d72007-09-15 14:07:45 -07006270 /* make sure the EEPROM is good */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006271 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
Auke Kok9a799d72007-09-15 14:07:45 -07006272 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
6273 err = -EIO;
6274 goto err_eeprom;
6275 }
6276
6277 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
6278 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
6279
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006280 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
6281 dev_err(&pdev->dev, "invalid MAC address\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006282 err = -EIO;
6283 goto err_eeprom;
6284 }
6285
Peter Waskiewicz61fac742010-04-27 00:38:15 +00006286 /* power down the optics */
6287 if (hw->phy.multispeed_fiber)
6288 hw->mac.ops.disable_tx_laser(hw);
6289
Auke Kok9a799d72007-09-15 14:07:45 -07006290 init_timer(&adapter->watchdog_timer);
6291 adapter->watchdog_timer.function = &ixgbe_watchdog;
6292 adapter->watchdog_timer.data = (unsigned long)adapter;
6293
6294 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006295 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07006296
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006297 err = ixgbe_init_interrupt_scheme(adapter);
6298 if (err)
6299 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07006300
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006301 switch (pdev->device) {
6302 case IXGBE_DEV_ID_82599_KX4:
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00006303 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
6304 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006305 break;
6306 default:
6307 adapter->wol = 0;
6308 break;
6309 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006310 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6311
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00006312 /* pick up the PCI bus settings for reporting later */
6313 hw->mac.ops.get_bus_info(hw);
6314
Auke Kok9a799d72007-09-15 14:07:45 -07006315 /* print bus type/speed/width info */
Johannes Berg7c510e42008-10-27 17:47:26 -07006316 dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n",
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006317 ((hw->bus.speed == ixgbe_bus_speed_5000) ? "5.0Gb/s":
6318 (hw->bus.speed == ixgbe_bus_speed_2500) ? "2.5Gb/s":"Unknown"),
6319 ((hw->bus.width == ixgbe_bus_width_pcie_x8) ? "Width x8" :
6320 (hw->bus.width == ixgbe_bus_width_pcie_x4) ? "Width x4" :
6321 (hw->bus.width == ixgbe_bus_width_pcie_x1) ? "Width x1" :
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006322 "Unknown"),
Johannes Berg7c510e42008-10-27 17:47:26 -07006323 netdev->dev_addr);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006324 ixgbe_read_pba_num_generic(hw, &part_num);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006325 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
6326 dev_info(&pdev->dev, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n",
6327 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
6328 (part_num >> 8), (part_num & 0xff));
6329 else
6330 dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
6331 hw->mac.type, hw->phy.type,
6332 (part_num >> 8), (part_num & 0xff));
Auke Kok9a799d72007-09-15 14:07:45 -07006333
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006334 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
Auke Kok0c254d82008-02-11 09:25:56 -08006335 dev_warn(&pdev->dev, "PCI-Express bandwidth available for "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006336 "this card is not sufficient for optimal "
6337 "performance.\n");
Auke Kok0c254d82008-02-11 09:25:56 -08006338 dev_warn(&pdev->dev, "For optimal performance a x8 "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006339 "PCI-Express slot is required.\n");
Auke Kok0c254d82008-02-11 09:25:56 -08006340 }
6341
Peter P Waskiewicz Jr34b03682009-02-05 23:54:42 -08006342 /* save off EEPROM version number */
6343 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
6344
Auke Kok9a799d72007-09-15 14:07:45 -07006345 /* reset the hardware with the new settings */
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00006346 err = hw->mac.ops.start_hw(hw);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006347
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00006348 if (err == IXGBE_ERR_EEPROM_VERSION) {
6349 /* We are running on a pre-production device, log a warning */
6350 dev_warn(&pdev->dev, "This device is a pre-production "
6351 "adapter/LOM. Please be aware there may be issues "
6352 "associated with your hardware. If you are "
6353 "experiencing problems please contact your Intel or "
6354 "hardware representative who provided you with this "
6355 "hardware.\n");
6356 }
Auke Kok9a799d72007-09-15 14:07:45 -07006357 strcpy(netdev->name, "eth%d");
6358 err = register_netdev(netdev);
6359 if (err)
6360 goto err_register;
6361
Jesse Brandeburg54386462009-04-17 20:44:27 +00006362 /* carrier off reporting is important to ethtool even BEFORE open */
6363 netif_carrier_off(netdev);
6364
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006365 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
6366 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
6367 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
6368
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006369#ifdef CONFIG_IXGBE_DCA
Denis V. Lunev652f0932008-03-27 14:39:17 +03006370 if (dca_add_requester(&pdev->dev) == 0) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006371 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006372 ixgbe_setup_dca(adapter);
6373 }
6374#endif
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006375 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
6376 DPRINTK(PROBE, INFO, "IOV is enabled with %d VFs\n",
6377 adapter->num_vfs);
6378 for (i = 0; i < adapter->num_vfs; i++)
6379 ixgbe_vf_configuration(pdev, (i | 0x10000000));
6380 }
6381
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006382 /* add san mac addr to netdev */
6383 ixgbe_add_sanmac_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006384
6385 dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n");
6386 cards_found++;
6387 return 0;
6388
6389err_register:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08006390 ixgbe_release_hw_control(adapter);
Alexander Duyck7a921c92009-05-06 10:43:28 +00006391 ixgbe_clear_interrupt_scheme(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006392err_sw_init:
6393err_eeprom:
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006394 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6395 ixgbe_disable_sriov(adapter);
Donald Skidmorec4900be2008-11-20 21:11:42 -08006396 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6397 del_timer_sync(&adapter->sfp_timer);
6398 cancel_work_sync(&adapter->sfp_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006399 cancel_work_sync(&adapter->multispeed_fiber_task);
6400 cancel_work_sync(&adapter->sfp_config_module_task);
Auke Kok9a799d72007-09-15 14:07:45 -07006401 iounmap(hw->hw_addr);
6402err_ioremap:
6403 free_netdev(netdev);
6404err_alloc_etherdev:
gouji-new9ce77662009-05-06 10:44:45 +00006405 pci_release_selected_regions(pdev, pci_select_bars(pdev,
6406 IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07006407err_pci_reg:
6408err_dma:
6409 pci_disable_device(pdev);
6410 return err;
6411}
6412
6413/**
6414 * ixgbe_remove - Device Removal Routine
6415 * @pdev: PCI device information struct
6416 *
6417 * ixgbe_remove is called by the PCI subsystem to alert the driver
6418 * that it should release a PCI device. The could be caused by a
6419 * Hot-Plug event, or because the driver is going to be removed from
6420 * memory.
6421 **/
6422static void __devexit ixgbe_remove(struct pci_dev *pdev)
6423{
6424 struct net_device *netdev = pci_get_drvdata(pdev);
6425 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6426
6427 set_bit(__IXGBE_DOWN, &adapter->state);
Donald Skidmorec4900be2008-11-20 21:11:42 -08006428 /* clear the module not found bit to make sure the worker won't
6429 * reschedule
6430 */
6431 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07006432 del_timer_sync(&adapter->watchdog_timer);
6433
Donald Skidmorec4900be2008-11-20 21:11:42 -08006434 del_timer_sync(&adapter->sfp_timer);
6435 cancel_work_sync(&adapter->watchdog_task);
6436 cancel_work_sync(&adapter->sfp_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006437 cancel_work_sync(&adapter->multispeed_fiber_task);
6438 cancel_work_sync(&adapter->sfp_config_module_task);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006439 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
6440 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
6441 cancel_work_sync(&adapter->fdir_reinit_task);
Auke Kok9a799d72007-09-15 14:07:45 -07006442 flush_scheduled_work();
6443
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006444#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006445 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
6446 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
6447 dca_remove_requester(&pdev->dev);
6448 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
6449 }
6450
6451#endif
Yi Zou332d4a72009-05-13 13:11:53 +00006452#ifdef IXGBE_FCOE
6453 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
6454 ixgbe_cleanup_fcoe(adapter);
6455
6456#endif /* IXGBE_FCOE */
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006457
6458 /* remove the added san mac */
6459 ixgbe_del_sanmac_netdev(netdev);
6460
Donald Skidmorec4900be2008-11-20 21:11:42 -08006461 if (netdev->reg_state == NETREG_REGISTERED)
6462 unregister_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006463
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006464 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6465 ixgbe_disable_sriov(adapter);
6466
Alexander Duyck7a921c92009-05-06 10:43:28 +00006467 ixgbe_clear_interrupt_scheme(adapter);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08006468
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006469 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006470
6471 iounmap(adapter->hw.hw_addr);
gouji-new9ce77662009-05-06 10:44:45 +00006472 pci_release_selected_regions(pdev, pci_select_bars(pdev,
6473 IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07006474
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006475 DPRINTK(PROBE, INFO, "complete\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006476
Auke Kok9a799d72007-09-15 14:07:45 -07006477 free_netdev(netdev);
6478
Frans Pop19d5afd2009-10-02 10:04:12 -07006479 pci_disable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006480
Auke Kok9a799d72007-09-15 14:07:45 -07006481 pci_disable_device(pdev);
6482}
6483
6484/**
6485 * ixgbe_io_error_detected - called when PCI error is detected
6486 * @pdev: Pointer to PCI device
6487 * @state: The current pci connection state
6488 *
6489 * This function is called after a PCI bus error affecting
6490 * this device has been detected.
6491 */
6492static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006493 pci_channel_state_t state)
Auke Kok9a799d72007-09-15 14:07:45 -07006494{
6495 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08006496 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006497
6498 netif_device_detach(netdev);
6499
Breno Leitao3044b8d2009-05-06 10:44:26 +00006500 if (state == pci_channel_io_perm_failure)
6501 return PCI_ERS_RESULT_DISCONNECT;
6502
Auke Kok9a799d72007-09-15 14:07:45 -07006503 if (netif_running(netdev))
6504 ixgbe_down(adapter);
6505 pci_disable_device(pdev);
6506
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006507 /* Request a slot reset. */
Auke Kok9a799d72007-09-15 14:07:45 -07006508 return PCI_ERS_RESULT_NEED_RESET;
6509}
6510
6511/**
6512 * ixgbe_io_slot_reset - called after the pci bus has been reset.
6513 * @pdev: Pointer to PCI device
6514 *
6515 * Restart the card from scratch, as if from a cold-boot.
6516 */
6517static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
6518{
6519 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08006520 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006521 pci_ers_result_t result;
6522 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07006523
gouji-new9ce77662009-05-06 10:44:45 +00006524 if (pci_enable_device_mem(pdev)) {
Auke Kok9a799d72007-09-15 14:07:45 -07006525 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006526 "Cannot re-enable PCI device after reset.\n");
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006527 result = PCI_ERS_RESULT_DISCONNECT;
6528 } else {
6529 pci_set_master(pdev);
6530 pci_restore_state(pdev);
Breno Leitaoc0e1f682009-11-10 08:37:47 +00006531 pci_save_state(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006532
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07006533 pci_wake_from_d3(pdev, false);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006534
6535 ixgbe_reset(adapter);
PJ Waskiewicz88512532009-03-13 22:15:10 +00006536 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006537 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9a799d72007-09-15 14:07:45 -07006538 }
Auke Kok9a799d72007-09-15 14:07:45 -07006539
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006540 err = pci_cleanup_aer_uncorrect_error_status(pdev);
6541 if (err) {
6542 dev_err(&pdev->dev,
6543 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err);
6544 /* non-fatal, continue */
6545 }
Auke Kok9a799d72007-09-15 14:07:45 -07006546
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006547 return result;
Auke Kok9a799d72007-09-15 14:07:45 -07006548}
6549
6550/**
6551 * ixgbe_io_resume - called when traffic can start flowing again.
6552 * @pdev: Pointer to PCI device
6553 *
6554 * This callback is called when the error recovery driver tells us that
6555 * its OK to resume normal operation.
6556 */
6557static void ixgbe_io_resume(struct pci_dev *pdev)
6558{
6559 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08006560 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006561
6562 if (netif_running(netdev)) {
6563 if (ixgbe_up(adapter)) {
6564 DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n");
6565 return;
6566 }
6567 }
6568
6569 netif_device_attach(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006570}
6571
6572static struct pci_error_handlers ixgbe_err_handler = {
6573 .error_detected = ixgbe_io_error_detected,
6574 .slot_reset = ixgbe_io_slot_reset,
6575 .resume = ixgbe_io_resume,
6576};
6577
6578static struct pci_driver ixgbe_driver = {
6579 .name = ixgbe_driver_name,
6580 .id_table = ixgbe_pci_tbl,
6581 .probe = ixgbe_probe,
6582 .remove = __devexit_p(ixgbe_remove),
6583#ifdef CONFIG_PM
6584 .suspend = ixgbe_suspend,
6585 .resume = ixgbe_resume,
6586#endif
6587 .shutdown = ixgbe_shutdown,
6588 .err_handler = &ixgbe_err_handler
6589};
6590
6591/**
6592 * ixgbe_init_module - Driver Registration Routine
6593 *
6594 * ixgbe_init_module is the first routine called when the driver is
6595 * loaded. All it does is register with the PCI subsystem.
6596 **/
6597static int __init ixgbe_init_module(void)
6598{
6599 int ret;
6600 printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name,
6601 ixgbe_driver_string, ixgbe_driver_version);
6602
6603 printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright);
6604
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006605#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006606 dca_register_notify(&dca_notifier);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006607#endif
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006608
Auke Kok9a799d72007-09-15 14:07:45 -07006609 ret = pci_register_driver(&ixgbe_driver);
6610 return ret;
6611}
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006612
Auke Kok9a799d72007-09-15 14:07:45 -07006613module_init(ixgbe_init_module);
6614
6615/**
6616 * ixgbe_exit_module - Driver Exit Cleanup Routine
6617 *
6618 * ixgbe_exit_module is called just before the driver is removed
6619 * from memory.
6620 **/
6621static void __exit ixgbe_exit_module(void)
6622{
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006623#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006624 dca_unregister_notify(&dca_notifier);
6625#endif
Auke Kok9a799d72007-09-15 14:07:45 -07006626 pci_unregister_driver(&ixgbe_driver);
6627}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006628
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006629#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006630static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006631 void *p)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006632{
6633 int ret_val;
6634
6635 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006636 __ixgbe_notify_dca);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006637
6638 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
6639}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006640
Alexander Duyckb4533682009-03-31 21:32:42 +00006641#endif /* CONFIG_IXGBE_DCA */
6642#ifdef DEBUG
6643/**
6644 * ixgbe_get_hw_dev_name - return device name string
6645 * used by hardware layer to print debugging information
6646 **/
6647char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw)
6648{
6649 struct ixgbe_adapter *adapter = hw->back;
6650 return adapter->netdev->name;
6651}
6652
6653#endif
Auke Kok9a799d72007-09-15 14:07:45 -07006654module_exit(ixgbe_exit_module);
6655
6656/* ixgbe_main.c */