blob: 850361a4c38de323ebe5c4d709cf35bc1a9091f3 [file] [log] [blame]
Auke Kok9a799d72007-09-15 14:07:45 -07001/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
Peter P Waskiewicz Jr3efac5a2009-02-01 01:19:20 -08004 Copyright(c) 1999 - 2009 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>
37#include <linux/ipv6.h>
38#include <net/checksum.h>
39#include <net/ip6_checksum.h>
40#include <linux/ethtool.h>
41#include <linux/if_vlan.h>
42
43#include "ixgbe.h"
44#include "ixgbe_common.h"
45
46char ixgbe_driver_name[] = "ixgbe";
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070047static const char ixgbe_driver_string[] =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070048 "Intel(R) 10 Gigabit PCI Express Network Driver";
Auke Kok9a799d72007-09-15 14:07:45 -070049
Peter P Waskiewicz Jr3efac5a2009-02-01 01:19:20 -080050#define DRV_VERSION "1.3.56-k2"
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070051const char ixgbe_driver_version[] = DRV_VERSION;
Peter P Waskiewicz Jr3efac5a2009-02-01 01:19:20 -080052static char ixgbe_copyright[] = "Copyright (c) 1999-2009 Intel Corporation.";
Auke Kok9a799d72007-09-15 14:07:45 -070053
54static const struct ixgbe_info *ixgbe_info_tbl[] = {
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070055 [board_82598] = &ixgbe_82598_info,
Auke Kok9a799d72007-09-15 14:07:45 -070056};
57
58/* ixgbe_pci_tbl - PCI Device ID Table
59 *
60 * Wildcard entries (PCI_ANY_ID) should come last
61 * Last entry must be all 0s
62 *
63 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
64 * Class, Class Mask, private data (not used) }
65 */
66static struct pci_device_id ixgbe_pci_tbl[] = {
Don Skidmore1e336d02009-01-26 20:57:51 -080067 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
68 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070069 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070070 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070071 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070072 board_82598 },
Jesse Brandeburg0befdb32008-10-31 00:46:40 -070073 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
74 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070075 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
Auke Kok3957d632007-10-31 15:22:10 -070076 board_82598 },
Jesse Brandeburg8d792cd2008-08-08 16:24:19 -070077 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
78 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080079 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
80 board_82598 },
81 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
82 board_82598 },
Jesse Brandeburgb95f5fc2008-09-11 19:58:59 -070083 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
84 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080085 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
86 board_82598 },
Don Skidmore2f21bdd2009-02-01 01:18:23 -080087 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
88 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070089
90 /* required last entry */
91 {0, }
92};
93MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
94
Jeff Garzik5dd2d332008-10-16 05:09:31 -040095#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -080096static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070097 void *p);
Jeb Cramerbd0362d2008-03-03 15:04:02 -080098static struct notifier_block dca_notifier = {
99 .notifier_call = ixgbe_notify_dca,
100 .next = NULL,
101 .priority = 0
102};
103#endif
104
Auke Kok9a799d72007-09-15 14:07:45 -0700105MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
106MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
107MODULE_LICENSE("GPL");
108MODULE_VERSION(DRV_VERSION);
109
110#define DEFAULT_DEBUG_LEVEL_SHIFT 3
111
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800112static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
113{
114 u32 ctrl_ext;
115
116 /* Let firmware take over control of h/w */
117 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
118 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700119 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800120}
121
122static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
123{
124 u32 ctrl_ext;
125
126 /* Let firmware know the driver has taken over */
127 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
128 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700129 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800130}
Auke Kok9a799d72007-09-15 14:07:45 -0700131
Auke Kok9a799d72007-09-15 14:07:45 -0700132static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700133 u8 msix_vector)
Auke Kok9a799d72007-09-15 14:07:45 -0700134{
135 u32 ivar, index;
136
137 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
138 index = (int_alloc_entry >> 2) & 0x1F;
139 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index));
140 ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3)));
141 ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3)));
142 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar);
143}
144
145static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700146 struct ixgbe_tx_buffer
147 *tx_buffer_info)
Auke Kok9a799d72007-09-15 14:07:45 -0700148{
149 if (tx_buffer_info->dma) {
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700150 pci_unmap_page(adapter->pdev, tx_buffer_info->dma,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700151 tx_buffer_info->length, PCI_DMA_TODEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700152 tx_buffer_info->dma = 0;
153 }
154 if (tx_buffer_info->skb) {
155 dev_kfree_skb_any(tx_buffer_info->skb);
156 tx_buffer_info->skb = NULL;
157 }
158 /* tx_buffer_info must be completely set up in the transmit path */
159}
160
161static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700162 struct ixgbe_ring *tx_ring,
163 unsigned int eop)
Auke Kok9a799d72007-09-15 14:07:45 -0700164{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700165 struct ixgbe_hw *hw = &adapter->hw;
166 u32 head, tail;
167
Auke Kok9a799d72007-09-15 14:07:45 -0700168 /* Detect a transmit hang in hardware, this serializes the
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700169 * check with the clearing of time_stamp and movement of eop */
170 head = IXGBE_READ_REG(hw, tx_ring->head);
171 tail = IXGBE_READ_REG(hw, tx_ring->tail);
Auke Kok9a799d72007-09-15 14:07:45 -0700172 adapter->detect_tx_hung = false;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700173 if ((head != tail) &&
174 tx_ring->tx_buffer_info[eop].time_stamp &&
Auke Kok9a799d72007-09-15 14:07:45 -0700175 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
176 !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) {
177 /* detected Tx unit hang */
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700178 union ixgbe_adv_tx_desc *tx_desc;
179 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
Auke Kok9a799d72007-09-15 14:07:45 -0700180 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700181 " Tx Queue <%d>\n"
182 " TDH, TDT <%x>, <%x>\n"
Auke Kok9a799d72007-09-15 14:07:45 -0700183 " next_to_use <%x>\n"
184 " next_to_clean <%x>\n"
185 "tx_buffer_info[next_to_clean]\n"
186 " time_stamp <%lx>\n"
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700187 " jiffies <%lx>\n",
188 tx_ring->queue_index,
189 head, tail,
190 tx_ring->next_to_use, eop,
191 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
Auke Kok9a799d72007-09-15 14:07:45 -0700192 return true;
193 }
194
195 return false;
196}
197
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700198#define IXGBE_MAX_TXD_PWR 14
199#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800200
201/* Tx Descriptors needed, worst case */
202#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
203 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
204#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700205 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800206
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700207#define GET_TX_HEAD_FROM_RING(ring) (\
208 *(volatile u32 *) \
209 ((union ixgbe_adv_tx_desc *)(ring)->desc + (ring)->count))
210static void ixgbe_tx_timeout(struct net_device *netdev);
211
Auke Kok9a799d72007-09-15 14:07:45 -0700212/**
213 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
214 * @adapter: board private structure
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700215 * @tx_ring: tx ring to clean
Auke Kok9a799d72007-09-15 14:07:45 -0700216 **/
217static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700218 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -0700219{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700220 union ixgbe_adv_tx_desc *tx_desc;
Auke Kok9a799d72007-09-15 14:07:45 -0700221 struct ixgbe_tx_buffer *tx_buffer_info;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700222 struct net_device *netdev = adapter->netdev;
223 struct sk_buff *skb;
224 unsigned int i;
225 u32 head, oldhead;
226 unsigned int count = 0;
227 unsigned int total_bytes = 0, total_packets = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700228
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700229 rmb();
230 head = GET_TX_HEAD_FROM_RING(tx_ring);
231 head = le32_to_cpu(head);
Auke Kok9a799d72007-09-15 14:07:45 -0700232 i = tx_ring->next_to_clean;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700233 while (1) {
234 while (i != head) {
Auke Kok9a799d72007-09-15 14:07:45 -0700235 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
236 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700237 skb = tx_buffer_info->skb;
Auke Kok9a799d72007-09-15 14:07:45 -0700238
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700239 if (skb) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800240 unsigned int segs, bytecount;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700241
242 /* gso_segs is currently only valid for tcp */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800243 segs = skb_shinfo(skb)->gso_segs ?: 1;
244 /* multiply data chunks by size of headers */
245 bytecount = ((segs - 1) * skb_headlen(skb)) +
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700246 skb->len;
247 total_packets += segs;
248 total_bytes += bytecount;
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800249 }
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700250
Auke Kok9a799d72007-09-15 14:07:45 -0700251 ixgbe_unmap_and_free_tx_resource(adapter,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700252 tx_buffer_info);
Auke Kok9a799d72007-09-15 14:07:45 -0700253
254 i++;
255 if (i == tx_ring->count)
256 i = 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700257
258 count++;
259 if (count == tx_ring->count)
260 goto done_cleaning;
Auke Kok9a799d72007-09-15 14:07:45 -0700261 }
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700262 oldhead = head;
263 rmb();
264 head = GET_TX_HEAD_FROM_RING(tx_ring);
265 head = le32_to_cpu(head);
266 if (head == oldhead)
267 goto done_cleaning;
268 } /* while (1) */
Auke Kok9a799d72007-09-15 14:07:45 -0700269
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700270done_cleaning:
Auke Kok9a799d72007-09-15 14:07:45 -0700271 tx_ring->next_to_clean = i;
272
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800273#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700274 if (unlikely(count && netif_carrier_ok(netdev) &&
275 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800276 /* Make sure that anybody stopping the queue after this
277 * sees the new next_to_clean.
278 */
279 smp_mb();
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800280 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
281 !test_bit(__IXGBE_DOWN, &adapter->state)) {
282 netif_wake_subqueue(netdev, tx_ring->queue_index);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700283 ++adapter->restart_queue;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800284 }
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800285 }
Auke Kok9a799d72007-09-15 14:07:45 -0700286
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700287 if (adapter->detect_tx_hung) {
288 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
289 /* schedule immediate reset if we believe we hung */
290 DPRINTK(PROBE, INFO,
291 "tx hang %d detected, resetting adapter\n",
292 adapter->tx_timeout_count + 1);
293 ixgbe_tx_timeout(adapter->netdev);
294 }
295 }
Auke Kok9a799d72007-09-15 14:07:45 -0700296
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700297 /* re-arm the interrupt */
298 if ((total_packets >= tx_ring->work_limit) ||
299 (count == tx_ring->count))
300 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->v_idx);
Auke Kok9a799d72007-09-15 14:07:45 -0700301
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700302 tx_ring->total_bytes += total_bytes;
303 tx_ring->total_packets += total_packets;
304 tx_ring->stats.bytes += total_bytes;
305 tx_ring->stats.packets += total_packets;
306 adapter->net_stats.tx_bytes += total_bytes;
307 adapter->net_stats.tx_packets += total_packets;
308 return (total_packets ? true : false);
Auke Kok9a799d72007-09-15 14:07:45 -0700309}
310
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400311#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800312static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700313 struct ixgbe_ring *rx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800314{
315 u32 rxctrl;
316 int cpu = get_cpu();
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700317 int q = rx_ring - adapter->rx_ring;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800318
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700319 if (rx_ring->cpu != cpu) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800320 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
321 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700322 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800323 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
324 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
Don Skidmore15005a32009-01-19 16:54:13 -0800325 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
326 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
327 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800328 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700329 rx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800330 }
331 put_cpu();
332}
333
334static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700335 struct ixgbe_ring *tx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800336{
337 u32 txctrl;
338 int cpu = get_cpu();
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700339 int q = tx_ring - adapter->tx_ring;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800340
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700341 if (tx_ring->cpu != cpu) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800342 txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q));
343 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700344 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800345 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
346 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl);
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700347 tx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800348 }
349 put_cpu();
350}
351
352static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
353{
354 int i;
355
356 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
357 return;
358
359 for (i = 0; i < adapter->num_tx_queues; i++) {
360 adapter->tx_ring[i].cpu = -1;
361 ixgbe_update_tx_dca(adapter, &adapter->tx_ring[i]);
362 }
363 for (i = 0; i < adapter->num_rx_queues; i++) {
364 adapter->rx_ring[i].cpu = -1;
365 ixgbe_update_rx_dca(adapter, &adapter->rx_ring[i]);
366 }
367}
368
369static int __ixgbe_notify_dca(struct device *dev, void *data)
370{
371 struct net_device *netdev = dev_get_drvdata(dev);
372 struct ixgbe_adapter *adapter = netdev_priv(netdev);
373 unsigned long event = *(unsigned long *)data;
374
375 switch (event) {
376 case DCA_PROVIDER_ADD:
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700377 /* if we're already enabled, don't do it again */
378 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
379 break;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800380 /* Always use CB2 mode, difference is masked
381 * in the CB driver. */
382 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
Denis V. Lunev652f0932008-03-27 14:39:17 +0300383 if (dca_add_requester(dev) == 0) {
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700384 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800385 ixgbe_setup_dca(adapter);
386 break;
387 }
388 /* Fall Through since DCA is disabled. */
389 case DCA_PROVIDER_REMOVE:
390 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
391 dca_remove_requester(dev);
392 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
393 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
394 }
395 break;
396 }
397
Denis V. Lunev652f0932008-03-27 14:39:17 +0300398 return 0;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800399}
400
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400401#endif /* CONFIG_IXGBE_DCA */
Auke Kok9a799d72007-09-15 14:07:45 -0700402/**
403 * ixgbe_receive_skb - Send a completed packet up the stack
404 * @adapter: board private structure
405 * @skb: packet to send up
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700406 * @status: hardware indication of status of receive
407 * @rx_ring: rx descriptor ring (for a specific queue) to setup
408 * @rx_desc: rx descriptor
Auke Kok9a799d72007-09-15 14:07:45 -0700409 **/
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800410static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700411 struct sk_buff *skb, u8 status,
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700412 union ixgbe_adv_rx_desc *rx_desc)
Auke Kok9a799d72007-09-15 14:07:45 -0700413{
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800414 struct ixgbe_adapter *adapter = q_vector->adapter;
415 struct napi_struct *napi = &q_vector->napi;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700416 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
417 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
Auke Kok9a799d72007-09-15 14:07:45 -0700418
David S. Miller0c8dfc82009-01-27 16:22:32 -0800419 skb_record_rx_queue(skb, q_vector - &adapter->q_vector[0]);
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800420 if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800421 if (adapter->vlgrp && is_vlan && (tag != 0))
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800422 vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700423 else
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800424 napi_gro_receive(napi, skb);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700425 } else {
426 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800427 if (adapter->vlgrp && is_vlan && (tag != 0))
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700428 vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag);
429 else
430 netif_receive_skb(skb);
431 } else {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800432 if (adapter->vlgrp && is_vlan && (tag != 0))
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700433 vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
434 else
435 netif_rx(skb);
436 }
Auke Kok9a799d72007-09-15 14:07:45 -0700437 }
438}
439
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800440/**
441 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
442 * @adapter: address of board private structure
443 * @status_err: hardware indication of status of receive
444 * @skb: skb currently being received and modified
445 **/
Auke Kok9a799d72007-09-15 14:07:45 -0700446static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
Jesse Brandeburg712744b2008-08-26 04:26:56 -0700447 u32 status_err, struct sk_buff *skb)
Auke Kok9a799d72007-09-15 14:07:45 -0700448{
449 skb->ip_summed = CHECKSUM_NONE;
450
Jesse Brandeburg712744b2008-08-26 04:26:56 -0700451 /* Rx csum disabled */
452 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -0700453 return;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800454
455 /* if IP and error */
456 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
457 (status_err & IXGBE_RXDADV_ERR_IPE)) {
Auke Kok9a799d72007-09-15 14:07:45 -0700458 adapter->hw_csum_rx_error++;
459 return;
460 }
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800461
462 if (!(status_err & IXGBE_RXD_STAT_L4CS))
463 return;
464
465 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
466 adapter->hw_csum_rx_error++;
467 return;
468 }
469
Auke Kok9a799d72007-09-15 14:07:45 -0700470 /* It must be a TCP or UDP packet with a valid checksum */
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800471 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kok9a799d72007-09-15 14:07:45 -0700472 adapter->hw_csum_rx_good++;
473}
474
475/**
476 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
477 * @adapter: address of board private structure
478 **/
479static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700480 struct ixgbe_ring *rx_ring,
481 int cleaned_count)
Auke Kok9a799d72007-09-15 14:07:45 -0700482{
Auke Kok9a799d72007-09-15 14:07:45 -0700483 struct pci_dev *pdev = adapter->pdev;
484 union ixgbe_adv_rx_desc *rx_desc;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700485 struct ixgbe_rx_buffer *bi;
Auke Kok9a799d72007-09-15 14:07:45 -0700486 unsigned int i;
Auke Kok9a799d72007-09-15 14:07:45 -0700487
488 i = rx_ring->next_to_use;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700489 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700490
491 while (cleaned_count--) {
492 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
493
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700494 if (!bi->page_dma &&
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700495 (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700496 if (!bi->page) {
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700497 bi->page = alloc_page(GFP_ATOMIC);
498 if (!bi->page) {
499 adapter->alloc_rx_page_failed++;
500 goto no_buffers;
501 }
502 bi->page_offset = 0;
503 } else {
504 /* use a half page if we're re-using */
505 bi->page_offset ^= (PAGE_SIZE / 2);
Auke Kok9a799d72007-09-15 14:07:45 -0700506 }
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700507
508 bi->page_dma = pci_map_page(pdev, bi->page,
509 bi->page_offset,
510 (PAGE_SIZE / 2),
511 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700512 }
513
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700514 if (!bi->skb) {
Jesse Brandeburg5ecc3612008-12-15 01:00:57 -0800515 struct sk_buff *skb;
516 skb = netdev_alloc_skb(adapter->netdev,
517 (rx_ring->rx_buf_len +
518 NET_IP_ALIGN));
Auke Kok9a799d72007-09-15 14:07:45 -0700519
520 if (!skb) {
521 adapter->alloc_rx_buff_failed++;
522 goto no_buffers;
523 }
524
525 /*
526 * Make buffer alignment 2 beyond a 16 byte boundary
527 * this will result in a 16 byte aligned IP header after
528 * the 14 byte MAC header is removed
529 */
530 skb_reserve(skb, NET_IP_ALIGN);
531
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700532 bi->skb = skb;
Jesse Brandeburg5ecc3612008-12-15 01:00:57 -0800533 bi->dma = pci_map_single(pdev, skb->data,
534 rx_ring->rx_buf_len,
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700535 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700536 }
537 /* Refresh the desc even if buffer_addrs didn't change because
538 * each write-back erases this info. */
539 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700540 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
541 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
Auke Kok9a799d72007-09-15 14:07:45 -0700542 } else {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700543 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
Auke Kok9a799d72007-09-15 14:07:45 -0700544 }
545
546 i++;
547 if (i == rx_ring->count)
548 i = 0;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700549 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700550 }
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700551
Auke Kok9a799d72007-09-15 14:07:45 -0700552no_buffers:
553 if (rx_ring->next_to_use != i) {
554 rx_ring->next_to_use = i;
555 if (i-- == 0)
556 i = (rx_ring->count - 1);
557
558 /*
559 * Force memory writes to complete before letting h/w
560 * know there are new descriptors to fetch. (Only
561 * applicable for weak-ordered memory model archs,
562 * such as IA-64).
563 */
564 wmb();
565 writel(i, adapter->hw.hw_addr + rx_ring->tail);
566 }
567}
568
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700569static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
570{
571 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
572}
573
574static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
575{
576 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
577}
578
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800579static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700580 struct ixgbe_ring *rx_ring,
581 int *work_done, int work_to_do)
Auke Kok9a799d72007-09-15 14:07:45 -0700582{
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800583 struct ixgbe_adapter *adapter = q_vector->adapter;
Auke Kok9a799d72007-09-15 14:07:45 -0700584 struct pci_dev *pdev = adapter->pdev;
585 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
586 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
587 struct sk_buff *skb;
588 unsigned int i;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700589 u32 len, staterr;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700590 u16 hdr_info;
591 bool cleaned = false;
Auke Kok9a799d72007-09-15 14:07:45 -0700592 int cleaned_count = 0;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -0800593 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700594
595 i = rx_ring->next_to_clean;
Auke Kok9a799d72007-09-15 14:07:45 -0700596 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
597 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
598 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -0700599
600 while (staterr & IXGBE_RXD_STAT_DD) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700601 u32 upper_len = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700602 if (*work_done >= work_to_do)
603 break;
604 (*work_done)++;
605
606 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700607 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
608 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700609 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -0700610 if (hdr_info & IXGBE_RXDADV_SPH)
611 adapter->rx_hdr_split++;
612 if (len > IXGBE_RX_HDR_SIZE)
613 len = IXGBE_RX_HDR_SIZE;
614 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700615 } else {
Auke Kok9a799d72007-09-15 14:07:45 -0700616 len = le16_to_cpu(rx_desc->wb.upper.length);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -0700617 }
Auke Kok9a799d72007-09-15 14:07:45 -0700618
619 cleaned = true;
620 skb = rx_buffer_info->skb;
621 prefetch(skb->data - NET_IP_ALIGN);
622 rx_buffer_info->skb = NULL;
623
624 if (len && !skb_shinfo(skb)->nr_frags) {
625 pci_unmap_single(pdev, rx_buffer_info->dma,
Jesse Brandeburg5ecc3612008-12-15 01:00:57 -0800626 rx_ring->rx_buf_len,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700627 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700628 skb_put(skb, len);
629 }
630
631 if (upper_len) {
632 pci_unmap_page(pdev, rx_buffer_info->page_dma,
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700633 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -0700634 rx_buffer_info->page_dma = 0;
635 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700636 rx_buffer_info->page,
637 rx_buffer_info->page_offset,
638 upper_len);
639
640 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
641 (page_count(rx_buffer_info->page) != 1))
642 rx_buffer_info->page = NULL;
643 else
644 get_page(rx_buffer_info->page);
Auke Kok9a799d72007-09-15 14:07:45 -0700645
646 skb->len += upper_len;
647 skb->data_len += upper_len;
648 skb->truesize += upper_len;
649 }
650
651 i++;
652 if (i == rx_ring->count)
653 i = 0;
654 next_buffer = &rx_ring->rx_buffer_info[i];
655
656 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
657 prefetch(next_rxd);
658
659 cleaned_count++;
660 if (staterr & IXGBE_RXD_STAT_EOP) {
661 rx_ring->stats.packets++;
662 rx_ring->stats.bytes += skb->len;
663 } else {
664 rx_buffer_info->skb = next_buffer->skb;
665 rx_buffer_info->dma = next_buffer->dma;
666 next_buffer->skb = skb;
Jesse Brandeburg762f4c52008-09-11 19:58:43 -0700667 next_buffer->dma = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700668 adapter->non_eop_descs++;
669 goto next_desc;
670 }
671
672 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
673 dev_kfree_skb_irq(skb);
674 goto next_desc;
675 }
676
677 ixgbe_rx_checksum(adapter, staterr, skb);
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -0800678
679 /* probably a little skewed due to removing CRC */
680 total_rx_bytes += skb->len;
681 total_rx_packets++;
682
Jesse Brandeburg74ce8dd22008-09-11 20:03:23 -0700683 skb->protocol = eth_type_trans(skb, adapter->netdev);
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800684 ixgbe_receive_skb(q_vector, skb, staterr, rx_desc);
Auke Kok9a799d72007-09-15 14:07:45 -0700685
686next_desc:
687 rx_desc->wb.upper.status_error = 0;
688
689 /* return some buffers to hardware, one at a time is too slow */
690 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
691 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
692 cleaned_count = 0;
693 }
694
695 /* use prefetched values */
696 rx_desc = next_rxd;
697 rx_buffer_info = next_buffer;
698
699 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700700 }
701
Auke Kok9a799d72007-09-15 14:07:45 -0700702 rx_ring->next_to_clean = i;
703 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
704
705 if (cleaned_count)
706 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
707
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800708 rx_ring->total_packets += total_rx_packets;
709 rx_ring->total_bytes += total_rx_bytes;
710 adapter->net_stats.rx_bytes += total_rx_bytes;
711 adapter->net_stats.rx_packets += total_rx_packets;
712
Auke Kok9a799d72007-09-15 14:07:45 -0700713 return cleaned;
714}
715
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800716static int ixgbe_clean_rxonly(struct napi_struct *, int);
Auke Kok9a799d72007-09-15 14:07:45 -0700717/**
718 * ixgbe_configure_msix - Configure MSI-X hardware
719 * @adapter: board private structure
720 *
721 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
722 * interrupts.
723 **/
724static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
725{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800726 struct ixgbe_q_vector *q_vector;
727 int i, j, q_vectors, v_idx, r_idx;
728 u32 mask;
Auke Kok9a799d72007-09-15 14:07:45 -0700729
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800730 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
731
732 /* Populate the IVAR table and set the ITR values to the
733 * corresponding register.
734 */
735 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
736 q_vector = &adapter->q_vector[v_idx];
737 /* XXX for_each_bit(...) */
738 r_idx = find_first_bit(q_vector->rxr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700739 adapter->num_rx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800740
741 for (i = 0; i < q_vector->rxr_count; i++) {
742 j = adapter->rx_ring[r_idx].reg_idx;
743 ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(j), v_idx);
744 r_idx = find_next_bit(q_vector->rxr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700745 adapter->num_rx_queues,
746 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800747 }
748 r_idx = find_first_bit(q_vector->txr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700749 adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800750
751 for (i = 0; i < q_vector->txr_count; i++) {
752 j = adapter->tx_ring[r_idx].reg_idx;
753 ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(j), v_idx);
754 r_idx = find_next_bit(q_vector->txr_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700755 adapter->num_tx_queues,
756 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800757 }
758
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700759 /* if this is a tx only vector halve the interrupt rate */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800760 if (q_vector->txr_count && !q_vector->rxr_count)
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700761 q_vector->eitr = (adapter->eitr_param >> 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800762 else
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700763 /* rx only */
764 q_vector->eitr = adapter->eitr_param;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800765
766 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx),
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700767 EITR_INTS_PER_SEC_TO_REG(q_vector->eitr));
Auke Kok9a799d72007-09-15 14:07:45 -0700768 }
769
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800770 ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, v_idx);
771 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
Auke Kok9a799d72007-09-15 14:07:45 -0700772
Jesse Brandeburg41fb9242008-09-11 19:55:58 -0700773 /* set up to autoclear timer, and the vectors */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800774 mask = IXGBE_EIMS_ENABLE_MASK;
Jesse Brandeburg41fb9242008-09-11 19:55:58 -0700775 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800776 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
Auke Kok9a799d72007-09-15 14:07:45 -0700777}
778
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800779enum latency_range {
780 lowest_latency = 0,
781 low_latency = 1,
782 bulk_latency = 2,
783 latency_invalid = 255
784};
785
786/**
787 * ixgbe_update_itr - update the dynamic ITR value based on statistics
788 * @adapter: pointer to adapter
789 * @eitr: eitr setting (ints per sec) to give last timeslice
790 * @itr_setting: current throttle rate in ints/second
791 * @packets: the number of packets during this measurement interval
792 * @bytes: the number of bytes during this measurement interval
793 *
794 * Stores a new ITR value based on packets and byte
795 * counts during the last interrupt. The advantage of per interrupt
796 * computation is faster updates and more accurate ITR for the current
797 * traffic pattern. Constants in this function were computed
798 * based on theoretical maximum wire speed and thresholds were set based
799 * on testing data as well as attempting to minimize response time
800 * while increasing bulk throughput.
801 * this functionality is controlled by the InterruptThrottleRate module
802 * parameter (see ixgbe_param.c)
803 **/
804static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700805 u32 eitr, u8 itr_setting,
806 int packets, int bytes)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800807{
808 unsigned int retval = itr_setting;
809 u32 timepassed_us;
810 u64 bytes_perint;
811
812 if (packets == 0)
813 goto update_itr_done;
814
815
816 /* simple throttlerate management
817 * 0-20MB/s lowest (100000 ints/s)
818 * 20-100MB/s low (20000 ints/s)
819 * 100-1249MB/s bulk (8000 ints/s)
820 */
821 /* what was last interrupt timeslice? */
822 timepassed_us = 1000000/eitr;
823 bytes_perint = bytes / timepassed_us; /* bytes/usec */
824
825 switch (itr_setting) {
826 case lowest_latency:
827 if (bytes_perint > adapter->eitr_low)
828 retval = low_latency;
829 break;
830 case low_latency:
831 if (bytes_perint > adapter->eitr_high)
832 retval = bulk_latency;
833 else if (bytes_perint <= adapter->eitr_low)
834 retval = lowest_latency;
835 break;
836 case bulk_latency:
837 if (bytes_perint <= adapter->eitr_high)
838 retval = low_latency;
839 break;
840 }
841
842update_itr_done:
843 return retval;
844}
845
846static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
847{
848 struct ixgbe_adapter *adapter = q_vector->adapter;
849 struct ixgbe_hw *hw = &adapter->hw;
850 u32 new_itr;
851 u8 current_itr, ret_itr;
852 int i, r_idx, v_idx = ((void *)q_vector - (void *)(adapter->q_vector)) /
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700853 sizeof(struct ixgbe_q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800854 struct ixgbe_ring *rx_ring, *tx_ring;
855
856 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
857 for (i = 0; i < q_vector->txr_count; i++) {
858 tx_ring = &(adapter->tx_ring[r_idx]);
859 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700860 q_vector->tx_itr,
861 tx_ring->total_packets,
862 tx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800863 /* if the result for this queue would decrease interrupt
864 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700865 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700866 q_vector->tx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800867 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700868 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800869 }
870
871 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
872 for (i = 0; i < q_vector->rxr_count; i++) {
873 rx_ring = &(adapter->rx_ring[r_idx]);
874 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700875 q_vector->rx_itr,
876 rx_ring->total_packets,
877 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800878 /* if the result for this queue would decrease interrupt
879 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700880 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700881 q_vector->rx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800882 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700883 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800884 }
885
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700886 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800887
888 switch (current_itr) {
889 /* counts and packets in update_itr are dependent on these numbers */
890 case lowest_latency:
891 new_itr = 100000;
892 break;
893 case low_latency:
894 new_itr = 20000; /* aka hwitr = ~200 */
895 break;
896 case bulk_latency:
897 default:
898 new_itr = 8000;
899 break;
900 }
901
902 if (new_itr != q_vector->eitr) {
903 u32 itr_reg;
904 /* do an exponential smoothing */
905 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
906 q_vector->eitr = new_itr;
907 itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
908 /* must write high and low 16 bits to reset counter */
909 DPRINTK(TX_ERR, DEBUG, "writing eitr(%d): %08X\n", v_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700910 itr_reg);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -0800911 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg | (itr_reg)<<16);
912 }
913
914 return;
915}
916
Jesse Brandeburg0befdb32008-10-31 00:46:40 -0700917static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
918{
919 struct ixgbe_hw *hw = &adapter->hw;
920
921 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
922 (eicr & IXGBE_EICR_GPI_SDP1)) {
923 DPRINTK(PROBE, CRIT, "Fan has stopped, replace the adapter\n");
924 /* write to clear the interrupt */
925 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
926 }
927}
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -0700928
929static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
930{
931 struct ixgbe_hw *hw = &adapter->hw;
932
933 adapter->lsc_int++;
934 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
935 adapter->link_check_timeout = jiffies;
936 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
937 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
938 schedule_work(&adapter->watchdog_task);
939 }
940}
941
Auke Kok9a799d72007-09-15 14:07:45 -0700942static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
943{
944 struct net_device *netdev = data;
945 struct ixgbe_adapter *adapter = netdev_priv(netdev);
946 struct ixgbe_hw *hw = &adapter->hw;
947 u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
948
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -0700949 if (eicr & IXGBE_EICR_LSC)
950 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -0800951
Jesse Brandeburg0befdb32008-10-31 00:46:40 -0700952 ixgbe_check_fan_failure(adapter, eicr);
953
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -0800954 if (!test_bit(__IXGBE_DOWN, &adapter->state))
955 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
Auke Kok9a799d72007-09-15 14:07:45 -0700956
957 return IRQ_HANDLED;
958}
959
960static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
961{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800962 struct ixgbe_q_vector *q_vector = data;
963 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700964 struct ixgbe_ring *tx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800965 int i, r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -0700966
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800967 if (!q_vector->txr_count)
968 return IRQ_HANDLED;
969
970 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
971 for (i = 0; i < q_vector->txr_count; i++) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700972 tx_ring = &(adapter->tx_ring[r_idx]);
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400973#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800974 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700975 ixgbe_update_tx_dca(adapter, tx_ring);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800976#endif
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700977 tx_ring->total_bytes = 0;
978 tx_ring->total_packets = 0;
979 ixgbe_clean_tx_irq(adapter, tx_ring);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800980 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700981 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800982 }
983
Auke Kok9a799d72007-09-15 14:07:45 -0700984 return IRQ_HANDLED;
985}
986
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800987/**
988 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
989 * @irq: unused
990 * @data: pointer to our q_vector struct for this interrupt vector
991 **/
Auke Kok9a799d72007-09-15 14:07:45 -0700992static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
993{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800994 struct ixgbe_q_vector *q_vector = data;
995 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700996 struct ixgbe_ring *rx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -0800997 int r_idx;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -0700998 int i;
Auke Kok9a799d72007-09-15 14:07:45 -0700999
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001000 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001001 for (i = 0; i < q_vector->rxr_count; i++) {
1002 rx_ring = &(adapter->rx_ring[r_idx]);
1003 rx_ring->total_bytes = 0;
1004 rx_ring->total_packets = 0;
1005 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1006 r_idx + 1);
1007 }
1008
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001009 if (!q_vector->rxr_count)
1010 return IRQ_HANDLED;
1011
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001012 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001013 rx_ring = &(adapter->rx_ring[r_idx]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001014 /* disable interrupts on this vector only */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001015 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rx_ring->v_idx);
Ben Hutchings288379f2009-01-19 16:43:59 -08001016 napi_schedule(&q_vector->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001017
Auke Kok9a799d72007-09-15 14:07:45 -07001018 return IRQ_HANDLED;
1019}
1020
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001021static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1022{
1023 ixgbe_msix_clean_rx(irq, data);
1024 ixgbe_msix_clean_tx(irq, data);
1025
1026 return IRQ_HANDLED;
1027}
1028
1029/**
1030 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1031 * @napi: napi struct with our devices info in it
1032 * @budget: amount of work driver is allowed to do this pass, in packets
1033 *
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001034 * This function is optimized for cleaning one queue only on a single
1035 * q_vector!!!
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001036 **/
Auke Kok9a799d72007-09-15 14:07:45 -07001037static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1038{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001039 struct ixgbe_q_vector *q_vector =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001040 container_of(napi, struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001041 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001042 struct ixgbe_ring *rx_ring = NULL;
Auke Kok9a799d72007-09-15 14:07:45 -07001043 int work_done = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001044 long r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -07001045
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001046 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001047 rx_ring = &(adapter->rx_ring[r_idx]);
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001048#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001049 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001050 ixgbe_update_rx_dca(adapter, rx_ring);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001051#endif
Auke Kok9a799d72007-09-15 14:07:45 -07001052
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001053 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07001054
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001055 /* If all Rx work done, exit the polling mode */
1056 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001057 napi_complete(napi);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001058 if (adapter->itr_setting & 3)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001059 ixgbe_set_itr_msix(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07001060 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001061 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, rx_ring->v_idx);
Auke Kok9a799d72007-09-15 14:07:45 -07001062 }
1063
1064 return work_done;
1065}
1066
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001067/**
1068 * ixgbe_clean_rxonly_many - msix (aka one shot) rx clean routine
1069 * @napi: napi struct with our devices info in it
1070 * @budget: amount of work driver is allowed to do this pass, in packets
1071 *
1072 * This function will clean more than one rx queue associated with a
1073 * q_vector.
1074 **/
1075static int ixgbe_clean_rxonly_many(struct napi_struct *napi, int budget)
1076{
1077 struct ixgbe_q_vector *q_vector =
1078 container_of(napi, struct ixgbe_q_vector, napi);
1079 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001080 struct ixgbe_ring *rx_ring = NULL;
1081 int work_done = 0, i;
1082 long r_idx;
1083 u16 enable_mask = 0;
1084
1085 /* attempt to distribute budget to each queue fairly, but don't allow
1086 * the budget to go below 1 because we'll exit polling */
1087 budget /= (q_vector->rxr_count ?: 1);
1088 budget = max(budget, 1);
1089 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1090 for (i = 0; i < q_vector->rxr_count; i++) {
1091 rx_ring = &(adapter->rx_ring[r_idx]);
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001092#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001093 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1094 ixgbe_update_rx_dca(adapter, rx_ring);
1095#endif
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001096 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001097 enable_mask |= rx_ring->v_idx;
1098 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1099 r_idx + 1);
1100 }
1101
1102 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1103 rx_ring = &(adapter->rx_ring[r_idx]);
1104 /* If all Rx work done, exit the polling mode */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07001105 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001106 napi_complete(napi);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001107 if (adapter->itr_setting & 3)
1108 ixgbe_set_itr_msix(q_vector);
1109 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1110 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, enable_mask);
1111 return 0;
1112 }
1113
1114 return work_done;
1115}
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001116static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001117 int r_idx)
Auke Kok9a799d72007-09-15 14:07:45 -07001118{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001119 a->q_vector[v_idx].adapter = a;
1120 set_bit(r_idx, a->q_vector[v_idx].rxr_idx);
1121 a->q_vector[v_idx].rxr_count++;
1122 a->rx_ring[r_idx].v_idx = 1 << v_idx;
1123}
Auke Kok9a799d72007-09-15 14:07:45 -07001124
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001125static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001126 int r_idx)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001127{
1128 a->q_vector[v_idx].adapter = a;
1129 set_bit(r_idx, a->q_vector[v_idx].txr_idx);
1130 a->q_vector[v_idx].txr_count++;
1131 a->tx_ring[r_idx].v_idx = 1 << v_idx;
1132}
Auke Kok9a799d72007-09-15 14:07:45 -07001133
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001134/**
1135 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
1136 * @adapter: board private structure to initialize
1137 * @vectors: allotted vector count for descriptor rings
1138 *
1139 * This function maps descriptor rings to the queue-specific vectors
1140 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1141 * one vector per ring/queue, but on a constrained vector budget, we
1142 * group the rings as "efficiently" as possible. You would add new
1143 * mapping configurations in here.
1144 **/
1145static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001146 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001147{
1148 int v_start = 0;
1149 int rxr_idx = 0, txr_idx = 0;
1150 int rxr_remaining = adapter->num_rx_queues;
1151 int txr_remaining = adapter->num_tx_queues;
1152 int i, j;
1153 int rqpv, tqpv;
1154 int err = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001155
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001156 /* No mapping required if MSI-X is disabled. */
1157 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -07001158 goto out;
1159
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001160 /*
1161 * The ideal configuration...
1162 * We have enough vectors to map one per queue.
1163 */
1164 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
1165 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
1166 map_vector_to_rxq(adapter, v_start, rxr_idx);
1167
1168 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
1169 map_vector_to_txq(adapter, v_start, txr_idx);
1170
1171 goto out;
1172 }
1173
1174 /*
1175 * If we don't have enough vectors for a 1-to-1
1176 * mapping, we'll have to group them so there are
1177 * multiple queues per vector.
1178 */
1179 /* Re-adjusting *qpv takes care of the remainder. */
1180 for (i = v_start; i < vectors; i++) {
1181 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
1182 for (j = 0; j < rqpv; j++) {
1183 map_vector_to_rxq(adapter, i, rxr_idx);
1184 rxr_idx++;
1185 rxr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07001186 }
Auke Kok9a799d72007-09-15 14:07:45 -07001187 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001188 for (i = v_start; i < vectors; i++) {
1189 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
1190 for (j = 0; j < tqpv; j++) {
1191 map_vector_to_txq(adapter, i, txr_idx);
1192 txr_idx++;
1193 txr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07001194 }
Auke Kok9a799d72007-09-15 14:07:45 -07001195 }
1196
Auke Kok9a799d72007-09-15 14:07:45 -07001197out:
Auke Kok9a799d72007-09-15 14:07:45 -07001198 return err;
1199}
1200
1201/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001202 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
1203 * @adapter: board private structure
1204 *
1205 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
1206 * interrupts from the kernel.
1207 **/
1208static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
1209{
1210 struct net_device *netdev = adapter->netdev;
1211 irqreturn_t (*handler)(int, void *);
1212 int i, vector, q_vectors, err;
Robert Olssoncb13fc22008-11-25 16:43:52 -08001213 int ri=0, ti=0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001214
1215 /* Decrement for Other and TCP Timer vectors */
1216 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1217
1218 /* Map the Tx/Rx rings to the vectors we were allotted. */
1219 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
1220 if (err)
1221 goto out;
1222
1223#define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001224 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
1225 &ixgbe_msix_clean_many)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001226 for (vector = 0; vector < q_vectors; vector++) {
1227 handler = SET_HANDLER(&adapter->q_vector[vector]);
Robert Olssoncb13fc22008-11-25 16:43:52 -08001228
1229 if(handler == &ixgbe_msix_clean_rx) {
1230 sprintf(adapter->name[vector], "%s-%s-%d",
1231 netdev->name, "rx", ri++);
1232 }
1233 else if(handler == &ixgbe_msix_clean_tx) {
1234 sprintf(adapter->name[vector], "%s-%s-%d",
1235 netdev->name, "tx", ti++);
1236 }
1237 else
1238 sprintf(adapter->name[vector], "%s-%s-%d",
1239 netdev->name, "TxRx", vector);
1240
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001241 err = request_irq(adapter->msix_entries[vector].vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001242 handler, 0, adapter->name[vector],
1243 &(adapter->q_vector[vector]));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001244 if (err) {
1245 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001246 "request_irq failed for MSIX interrupt "
1247 "Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001248 goto free_queue_irqs;
1249 }
1250 }
1251
1252 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
1253 err = request_irq(adapter->msix_entries[vector].vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001254 &ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001255 if (err) {
1256 DPRINTK(PROBE, ERR,
1257 "request_irq for msix_lsc failed: %d\n", err);
1258 goto free_queue_irqs;
1259 }
1260
1261 return 0;
1262
1263free_queue_irqs:
1264 for (i = vector - 1; i >= 0; i--)
1265 free_irq(adapter->msix_entries[--vector].vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001266 &(adapter->q_vector[i]));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001267 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
1268 pci_disable_msix(adapter->pdev);
1269 kfree(adapter->msix_entries);
1270 adapter->msix_entries = NULL;
1271out:
1272 return err;
1273}
1274
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001275static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
1276{
1277 struct ixgbe_hw *hw = &adapter->hw;
1278 struct ixgbe_q_vector *q_vector = adapter->q_vector;
1279 u8 current_itr;
1280 u32 new_itr = q_vector->eitr;
1281 struct ixgbe_ring *rx_ring = &adapter->rx_ring[0];
1282 struct ixgbe_ring *tx_ring = &adapter->tx_ring[0];
1283
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001284 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001285 q_vector->tx_itr,
1286 tx_ring->total_packets,
1287 tx_ring->total_bytes);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001288 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001289 q_vector->rx_itr,
1290 rx_ring->total_packets,
1291 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001292
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001293 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001294
1295 switch (current_itr) {
1296 /* counts and packets in update_itr are dependent on these numbers */
1297 case lowest_latency:
1298 new_itr = 100000;
1299 break;
1300 case low_latency:
1301 new_itr = 20000; /* aka hwitr = ~200 */
1302 break;
1303 case bulk_latency:
1304 new_itr = 8000;
1305 break;
1306 default:
1307 break;
1308 }
1309
1310 if (new_itr != q_vector->eitr) {
1311 u32 itr_reg;
1312 /* do an exponential smoothing */
1313 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
1314 q_vector->eitr = new_itr;
1315 itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
1316 /* must write high and low 16 bits to reset counter */
1317 IXGBE_WRITE_REG(hw, IXGBE_EITR(0), itr_reg | (itr_reg)<<16);
1318 }
1319
1320 return;
1321}
1322
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001323/**
1324 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
1325 * @adapter: board private structure
1326 **/
1327static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
1328{
1329 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
1330 IXGBE_WRITE_FLUSH(&adapter->hw);
1331 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1332 int i;
1333 for (i = 0; i < adapter->num_msix_vectors; i++)
1334 synchronize_irq(adapter->msix_entries[i].vector);
1335 } else {
1336 synchronize_irq(adapter->pdev->irq);
1337 }
1338}
1339
1340/**
1341 * ixgbe_irq_enable - Enable default interrupt generation settings
1342 * @adapter: board private structure
1343 **/
1344static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
1345{
1346 u32 mask;
1347 mask = IXGBE_EIMS_ENABLE_MASK;
David S. Miller6ab33d512008-11-20 16:44:00 -08001348 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
1349 mask |= IXGBE_EIMS_GPI_SDP1;
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08001350 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1351 IXGBE_WRITE_FLUSH(&adapter->hw);
1352}
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001353
1354/**
1355 * ixgbe_intr - legacy mode Interrupt Handler
Auke Kok9a799d72007-09-15 14:07:45 -07001356 * @irq: interrupt number
1357 * @data: pointer to a network interface device structure
Auke Kok9a799d72007-09-15 14:07:45 -07001358 **/
1359static irqreturn_t ixgbe_intr(int irq, void *data)
1360{
1361 struct net_device *netdev = data;
1362 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1363 struct ixgbe_hw *hw = &adapter->hw;
1364 u32 eicr;
1365
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001366 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
1367 * therefore no explict interrupt disable is necessary */
1368 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07001369 if (!eicr) {
1370 /* shared interrupt alert!
1371 * make sure interrupts are enabled because the read will
1372 * have disabled interrupts due to EIAM */
1373 ixgbe_irq_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07001374 return IRQ_NONE; /* Not our interrupt */
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07001375 }
Auke Kok9a799d72007-09-15 14:07:45 -07001376
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001377 if (eicr & IXGBE_EICR_LSC)
1378 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001379
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001380 ixgbe_check_fan_failure(adapter, eicr);
1381
Ben Hutchings288379f2009-01-19 16:43:59 -08001382 if (napi_schedule_prep(&adapter->q_vector[0].napi)) {
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001383 adapter->tx_ring[0].total_packets = 0;
1384 adapter->tx_ring[0].total_bytes = 0;
1385 adapter->rx_ring[0].total_packets = 0;
1386 adapter->rx_ring[0].total_bytes = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001387 /* would disable interrupts here but EIAM disabled it */
Ben Hutchings288379f2009-01-19 16:43:59 -08001388 __napi_schedule(&adapter->q_vector[0].napi);
Auke Kok9a799d72007-09-15 14:07:45 -07001389 }
1390
1391 return IRQ_HANDLED;
1392}
1393
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001394static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
1395{
1396 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1397
1398 for (i = 0; i < q_vectors; i++) {
1399 struct ixgbe_q_vector *q_vector = &adapter->q_vector[i];
1400 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
1401 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
1402 q_vector->rxr_count = 0;
1403 q_vector->txr_count = 0;
1404 }
1405}
1406
Auke Kok9a799d72007-09-15 14:07:45 -07001407/**
1408 * ixgbe_request_irq - initialize interrupts
1409 * @adapter: board private structure
1410 *
1411 * Attempts to configure interrupts using the best available
1412 * capabilities of the hardware and kernel.
1413 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001414static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07001415{
1416 struct net_device *netdev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001417 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07001418
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001419 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1420 err = ixgbe_request_msix_irqs(adapter);
1421 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
1422 err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001423 netdev->name, netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001424 } else {
1425 err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001426 netdev->name, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001427 }
1428
Auke Kok9a799d72007-09-15 14:07:45 -07001429 if (err)
1430 DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err);
1431
Auke Kok9a799d72007-09-15 14:07:45 -07001432 return err;
1433}
1434
1435static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
1436{
1437 struct net_device *netdev = adapter->netdev;
1438
1439 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001440 int i, q_vectors;
Auke Kok9a799d72007-09-15 14:07:45 -07001441
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001442 q_vectors = adapter->num_msix_vectors;
1443
1444 i = q_vectors - 1;
Auke Kok9a799d72007-09-15 14:07:45 -07001445 free_irq(adapter->msix_entries[i].vector, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001446
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001447 i--;
1448 for (; i >= 0; i--) {
1449 free_irq(adapter->msix_entries[i].vector,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001450 &(adapter->q_vector[i]));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001451 }
1452
1453 ixgbe_reset_q_vectors(adapter);
1454 } else {
1455 free_irq(adapter->pdev->irq, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001456 }
1457}
1458
1459/**
Auke Kok9a799d72007-09-15 14:07:45 -07001460 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
1461 *
1462 **/
1463static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
1464{
Auke Kok9a799d72007-09-15 14:07:45 -07001465 struct ixgbe_hw *hw = &adapter->hw;
1466
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001467 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001468 EITR_INTS_PER_SEC_TO_REG(adapter->eitr_param));
Auke Kok9a799d72007-09-15 14:07:45 -07001469
1470 ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001471 ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(0), 0);
1472
1473 map_vector_to_rxq(adapter, 0, 0);
1474 map_vector_to_txq(adapter, 0, 0);
1475
1476 DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n");
Auke Kok9a799d72007-09-15 14:07:45 -07001477}
1478
1479/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001480 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07001481 * @adapter: board private structure
1482 *
1483 * Configure the Tx unit of the MAC after a reset.
1484 **/
1485static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
1486{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001487 u64 tdba, tdwba;
Auke Kok9a799d72007-09-15 14:07:45 -07001488 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001489 u32 i, j, tdlen, txctrl;
Auke Kok9a799d72007-09-15 14:07:45 -07001490
1491 /* Setup the HW Tx Head and Tail descriptor pointers */
1492 for (i = 0; i < adapter->num_tx_queues; i++) {
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001493 struct ixgbe_ring *ring = &adapter->tx_ring[i];
1494 j = ring->reg_idx;
1495 tdba = ring->dma;
1496 tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001497 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j),
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001498 (tdba & DMA_32BIT_MASK));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001499 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32));
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001500 tdwba = ring->dma +
1501 (ring->count * sizeof(union ixgbe_adv_tx_desc));
1502 tdwba |= IXGBE_TDWBAL_HEAD_WB_ENABLE;
1503 IXGBE_WRITE_REG(hw, IXGBE_TDWBAL(j), tdwba & DMA_32BIT_MASK);
1504 IXGBE_WRITE_REG(hw, IXGBE_TDWBAH(j), (tdwba >> 32));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001505 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen);
1506 IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0);
1507 IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0);
1508 adapter->tx_ring[i].head = IXGBE_TDH(j);
1509 adapter->tx_ring[i].tail = IXGBE_TDT(j);
1510 /* Disable Tx Head Writeback RO bit, since this hoses
1511 * bookkeeping if things aren't delivered in order.
1512 */
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001513 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001514 txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001515 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07001516 }
Auke Kok9a799d72007-09-15 14:07:45 -07001517}
1518
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001519#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
Auke Kok9a799d72007-09-15 14:07:45 -07001520
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001521static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index)
1522{
1523 struct ixgbe_ring *rx_ring;
1524 u32 srrctl;
1525 int queue0;
Alexander Duyck3be1adf2008-08-30 00:29:10 -07001526 unsigned long mask;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001527
Alexander Duyck3be1adf2008-08-30 00:29:10 -07001528 /* program one srrctl register per VMDq index */
1529 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) {
1530 long shift, len;
1531 mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask;
1532 len = sizeof(adapter->ring_feature[RING_F_VMDQ].mask) * 8;
1533 shift = find_first_bit(&mask, len);
1534 queue0 = index & mask;
1535 index = (index & mask) >> shift;
1536 /* program one srrctl per RSS queue since RDRXCTL.MVMEN is enabled */
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001537 } else {
Alexander Duyck3be1adf2008-08-30 00:29:10 -07001538 mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask;
1539 queue0 = index & mask;
1540 index = index & mask;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001541 }
Alexander Duyck3be1adf2008-08-30 00:29:10 -07001542
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001543 rx_ring = &adapter->rx_ring[queue0];
1544
1545 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
1546
1547 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
1548 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
1549
1550 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
1551 srrctl |= IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1552 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
1553 srrctl |= ((IXGBE_RX_HDR_SIZE <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001554 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
1555 IXGBE_SRRCTL_BSIZEHDR_MASK);
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001556 } else {
1557 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
1558
1559 if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
1560 srrctl |= IXGBE_RXBUFFER_2048 >>
1561 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1562 else
1563 srrctl |= rx_ring->rx_buf_len >>
1564 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1565 }
1566 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
1567}
1568
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001569#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001570 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001571
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07001572/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001573 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07001574 * @adapter: board private structure
1575 *
1576 * Configure the Rx unit of the MAC after a reset.
1577 **/
1578static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
1579{
1580 u64 rdba;
1581 struct ixgbe_hw *hw = &adapter->hw;
1582 struct net_device *netdev = adapter->netdev;
1583 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001584 int i, j;
Auke Kok9a799d72007-09-15 14:07:45 -07001585 u32 rdlen, rxctrl, rxcsum;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001586 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
1587 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
1588 0x6A3E67EA, 0x14364D17, 0x3BED200D};
Auke Kok9a799d72007-09-15 14:07:45 -07001589 u32 fctrl, hlreg0;
Auke Kok9a799d72007-09-15 14:07:45 -07001590 u32 pages;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001591 u32 reta = 0, mrqc;
1592 u32 rdrxctl;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001593 int rx_buf_len;
Auke Kok9a799d72007-09-15 14:07:45 -07001594
1595 /* Decide whether to use packet split mode or not */
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001596 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
Auke Kok9a799d72007-09-15 14:07:45 -07001597
1598 /* Set the RX buffer length according to the mode */
1599 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001600 rx_buf_len = IXGBE_RX_HDR_SIZE;
Auke Kok9a799d72007-09-15 14:07:45 -07001601 } else {
1602 if (netdev->mtu <= ETH_DATA_LEN)
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001603 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
Auke Kok9a799d72007-09-15 14:07:45 -07001604 else
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001605 rx_buf_len = ALIGN(max_frame, 1024);
Auke Kok9a799d72007-09-15 14:07:45 -07001606 }
1607
1608 fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL);
1609 fctrl |= IXGBE_FCTRL_BAM;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001610 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
Auke Kok9a799d72007-09-15 14:07:45 -07001611 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl);
1612
1613 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
1614 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1615 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
1616 else
1617 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
1618 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
1619
1620 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1621
Auke Kok9a799d72007-09-15 14:07:45 -07001622 rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
1623 /* disable receives while setting up the descriptors */
1624 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
1625 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
1626
1627 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1628 * the Base and Length of the Rx Descriptor Ring */
1629 for (i = 0; i < adapter->num_rx_queues; i++) {
1630 rdba = adapter->rx_ring[i].dma;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001631 j = adapter->rx_ring[i].reg_idx;
1632 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_32BIT_MASK));
1633 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32));
1634 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen);
1635 IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0);
1636 IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0);
1637 adapter->rx_ring[i].head = IXGBE_RDH(j);
1638 adapter->rx_ring[i].tail = IXGBE_RDT(j);
1639 adapter->rx_ring[i].rx_buf_len = rx_buf_len;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001640
1641 ixgbe_configure_srrctl(adapter, j);
Auke Kok9a799d72007-09-15 14:07:45 -07001642 }
1643
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07001644 /*
1645 * For VMDq support of different descriptor types or
1646 * buffer sizes through the use of multiple SRRCTL
1647 * registers, RDRXCTL.MVMEN must be set to 1
1648 *
1649 * also, the manual doesn't mention it clearly but DCA hints
1650 * will only use queue 0's tags unless this bit is set. Side
1651 * effects of setting this bit are only that SRRCTL must be
1652 * fully programmed [0..15]
1653 */
Alexander Duyck2f90b862008-11-20 20:52:10 -08001654 if (adapter->flags &
1655 (IXGBE_FLAG_RSS_ENABLED | IXGBE_FLAG_VMDQ_ENABLED)) {
1656 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
1657 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
1658 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
1659 }
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07001660
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001661 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Auke Kok9a799d72007-09-15 14:07:45 -07001662 /* Fill out redirection table */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001663 for (i = 0, j = 0; i < 128; i++, j++) {
1664 if (j == adapter->ring_feature[RING_F_RSS].indices)
1665 j = 0;
1666 /* reta = 4-byte sliding window of
1667 * 0x00..(indices-1)(indices-1)00..etc. */
1668 reta = (reta << 8) | (j * 0x11);
1669 if ((i & 3) == 3)
1670 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
Auke Kok9a799d72007-09-15 14:07:45 -07001671 }
1672
1673 /* Fill out hash function seeds */
1674 for (i = 0; i < 10; i++)
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001675 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07001676
1677 mrqc = IXGBE_MRQC_RSSEN
1678 /* Perform hash on these packet types */
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001679 | IXGBE_MRQC_RSS_FIELD_IPV4
1680 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
1681 | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
1682 | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP
1683 | IXGBE_MRQC_RSS_FIELD_IPV6_EX
1684 | IXGBE_MRQC_RSS_FIELD_IPV6
1685 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
1686 | IXGBE_MRQC_RSS_FIELD_IPV6_UDP
1687 | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP;
Auke Kok9a799d72007-09-15 14:07:45 -07001688 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
Auke Kok9a799d72007-09-15 14:07:45 -07001689 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001690
1691 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
1692
1693 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED ||
1694 adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) {
1695 /* Disable indicating checksum in descriptor, enables
1696 * RSS hash */
1697 rxcsum |= IXGBE_RXCSUM_PCSD;
1698 }
1699 if (!(rxcsum & IXGBE_RXCSUM_PCSD)) {
1700 /* Enable IPv4 payload checksum for UDP fragments
1701 * if PCSD is not set */
1702 rxcsum |= IXGBE_RXCSUM_IPPCSE;
1703 }
1704
1705 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
Auke Kok9a799d72007-09-15 14:07:45 -07001706}
1707
Auke Kok9a799d72007-09-15 14:07:45 -07001708static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1709{
1710 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001711 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07001712
1713 /* add VID to filter table */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001714 hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true);
Auke Kok9a799d72007-09-15 14:07:45 -07001715}
1716
1717static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1718{
1719 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001720 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07001721
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001722 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1723 ixgbe_irq_disable(adapter);
1724
Auke Kok9a799d72007-09-15 14:07:45 -07001725 vlan_group_set_device(adapter->vlgrp, vid, NULL);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001726
1727 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1728 ixgbe_irq_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07001729
1730 /* remove VID from filter table */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001731 hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false);
Auke Kok9a799d72007-09-15 14:07:45 -07001732}
1733
Don Skidmore068c89b2009-01-19 16:54:36 -08001734static void ixgbe_vlan_rx_register(struct net_device *netdev,
1735 struct vlan_group *grp)
1736{
1737 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1738 u32 ctrl;
1739
1740 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1741 ixgbe_irq_disable(adapter);
1742 adapter->vlgrp = grp;
1743
1744 /*
1745 * For a DCB driver, always enable VLAN tag stripping so we can
1746 * still receive traffic from a DCB-enabled host even if we're
1747 * not in DCB mode.
1748 */
1749 ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL);
1750 ctrl |= IXGBE_VLNCTRL_VME;
1751 ctrl &= ~IXGBE_VLNCTRL_CFIEN;
1752 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
1753 ixgbe_vlan_rx_add_vid(netdev, 0);
1754
1755 if (grp) {
1756 /* enable VLAN tag insert/strip */
1757 ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL);
1758 ctrl |= IXGBE_VLNCTRL_VME;
1759 ctrl &= ~IXGBE_VLNCTRL_CFIEN;
1760 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
1761 }
1762
1763 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1764 ixgbe_irq_enable(adapter);
1765}
1766
Auke Kok9a799d72007-09-15 14:07:45 -07001767static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
1768{
1769 ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1770
1771 if (adapter->vlgrp) {
1772 u16 vid;
1773 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1774 if (!vlan_group_get_device(adapter->vlgrp, vid))
1775 continue;
1776 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
1777 }
1778 }
1779}
1780
Christopher Leech2c5645c2008-08-26 04:27:02 -07001781static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq)
1782{
1783 struct dev_mc_list *mc_ptr;
1784 u8 *addr = *mc_addr_ptr;
1785 *vmdq = 0;
1786
1787 mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]);
1788 if (mc_ptr->next)
1789 *mc_addr_ptr = mc_ptr->next->dmi_addr;
1790 else
1791 *mc_addr_ptr = NULL;
1792
1793 return addr;
1794}
1795
Auke Kok9a799d72007-09-15 14:07:45 -07001796/**
Christopher Leech2c5645c2008-08-26 04:27:02 -07001797 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
Auke Kok9a799d72007-09-15 14:07:45 -07001798 * @netdev: network interface device structure
1799 *
Christopher Leech2c5645c2008-08-26 04:27:02 -07001800 * The set_rx_method entry point is called whenever the unicast/multicast
1801 * address list or the network interface flags are updated. This routine is
1802 * responsible for configuring the hardware for proper unicast, multicast and
1803 * promiscuous mode.
Auke Kok9a799d72007-09-15 14:07:45 -07001804 **/
Christopher Leech2c5645c2008-08-26 04:27:02 -07001805static void ixgbe_set_rx_mode(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07001806{
1807 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1808 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck3d016252008-08-26 18:30:04 -07001809 u32 fctrl, vlnctrl;
Christopher Leech2c5645c2008-08-26 04:27:02 -07001810 u8 *addr_list = NULL;
1811 int addr_count = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001812
1813 /* Check for Promiscuous and All Multicast modes */
1814
1815 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
Alexander Duyck3d016252008-08-26 18:30:04 -07001816 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
Auke Kok9a799d72007-09-15 14:07:45 -07001817
1818 if (netdev->flags & IFF_PROMISC) {
Christopher Leech2c5645c2008-08-26 04:27:02 -07001819 hw->addr_ctrl.user_set_promisc = 1;
Auke Kok9a799d72007-09-15 14:07:45 -07001820 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Alexander Duyck3d016252008-08-26 18:30:04 -07001821 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
Auke Kok9a799d72007-09-15 14:07:45 -07001822 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07001823 if (netdev->flags & IFF_ALLMULTI) {
1824 fctrl |= IXGBE_FCTRL_MPE;
1825 fctrl &= ~IXGBE_FCTRL_UPE;
1826 } else {
1827 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
1828 }
Alexander Duyck3d016252008-08-26 18:30:04 -07001829 vlnctrl |= IXGBE_VLNCTRL_VFE;
Christopher Leech2c5645c2008-08-26 04:27:02 -07001830 hw->addr_ctrl.user_set_promisc = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001831 }
1832
1833 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
Alexander Duyck3d016252008-08-26 18:30:04 -07001834 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07001835
Christopher Leech2c5645c2008-08-26 04:27:02 -07001836 /* reprogram secondary unicast list */
1837 addr_count = netdev->uc_count;
1838 if (addr_count)
1839 addr_list = netdev->uc_list->dmi_addr;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001840 hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count,
1841 ixgbe_addr_list_itr);
Auke Kok9a799d72007-09-15 14:07:45 -07001842
Christopher Leech2c5645c2008-08-26 04:27:02 -07001843 /* reprogram multicast list */
1844 addr_count = netdev->mc_count;
1845 if (addr_count)
1846 addr_list = netdev->mc_list->dmi_addr;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07001847 hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count,
1848 ixgbe_addr_list_itr);
Auke Kok9a799d72007-09-15 14:07:45 -07001849}
1850
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001851static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
1852{
1853 int q_idx;
1854 struct ixgbe_q_vector *q_vector;
1855 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1856
1857 /* legacy and MSI only use one vector */
1858 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
1859 q_vectors = 1;
1860
1861 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001862 struct napi_struct *napi;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001863 q_vector = &adapter->q_vector[q_idx];
1864 if (!q_vector->rxr_count)
1865 continue;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001866 napi = &q_vector->napi;
1867 if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) &&
1868 (q_vector->rxr_count > 1))
1869 napi->poll = &ixgbe_clean_rxonly_many;
1870
1871 napi_enable(napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001872 }
1873}
1874
1875static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
1876{
1877 int q_idx;
1878 struct ixgbe_q_vector *q_vector;
1879 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1880
1881 /* legacy and MSI only use one vector */
1882 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
1883 q_vectors = 1;
1884
1885 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1886 q_vector = &adapter->q_vector[q_idx];
1887 if (!q_vector->rxr_count)
1888 continue;
1889 napi_disable(&q_vector->napi);
1890 }
1891}
1892
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08001893#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08001894/*
1895 * ixgbe_configure_dcb - Configure DCB hardware
1896 * @adapter: ixgbe adapter struct
1897 *
1898 * This is called by the driver on open to configure the DCB hardware.
1899 * This is also called by the gennetlink interface when reconfiguring
1900 * the DCB state.
1901 */
1902static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
1903{
1904 struct ixgbe_hw *hw = &adapter->hw;
1905 u32 txdctl, vlnctrl;
1906 int i, j;
1907
1908 ixgbe_dcb_check_config(&adapter->dcb_cfg);
1909 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG);
1910 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG);
1911
1912 /* reconfigure the hardware */
1913 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
1914
1915 for (i = 0; i < adapter->num_tx_queues; i++) {
1916 j = adapter->tx_ring[i].reg_idx;
1917 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
1918 /* PThresh workaround for Tx hang with DFP enabled. */
1919 txdctl |= 32;
1920 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
1921 }
1922 /* Enable VLAN tag insert/strip */
1923 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
1924 vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
1925 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
1926 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
1927 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
1928}
1929
1930#endif
Auke Kok9a799d72007-09-15 14:07:45 -07001931static void ixgbe_configure(struct ixgbe_adapter *adapter)
1932{
1933 struct net_device *netdev = adapter->netdev;
1934 int i;
1935
Christopher Leech2c5645c2008-08-26 04:27:02 -07001936 ixgbe_set_rx_mode(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07001937
1938 ixgbe_restore_vlan(adapter);
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08001939#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08001940 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
1941 netif_set_gso_max_size(netdev, 32768);
1942 ixgbe_configure_dcb(adapter);
1943 } else {
1944 netif_set_gso_max_size(netdev, 65536);
1945 }
1946#else
1947 netif_set_gso_max_size(netdev, 65536);
1948#endif
Auke Kok9a799d72007-09-15 14:07:45 -07001949
1950 ixgbe_configure_tx(adapter);
1951 ixgbe_configure_rx(adapter);
1952 for (i = 0; i < adapter->num_rx_queues; i++)
1953 ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i],
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07001954 (adapter->rx_ring[i].count - 1));
Auke Kok9a799d72007-09-15 14:07:45 -07001955}
1956
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08001957/**
1958 * ixgbe_link_config - set up initial link with default speed and duplex
1959 * @hw: pointer to private hardware struct
1960 *
1961 * Returns 0 on success, negative on failure
1962 **/
1963static int ixgbe_link_config(struct ixgbe_hw *hw)
1964{
1965 u32 autoneg;
1966 bool link_up = false;
1967 u32 ret = IXGBE_ERR_LINK_SETUP;
1968
1969 if (hw->mac.ops.check_link)
1970 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1971
1972 if (ret)
1973 goto link_cfg_out;
1974
1975 if (hw->mac.ops.get_link_capabilities)
1976 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
1977 &hw->mac.autoneg);
1978 if (ret)
1979 goto link_cfg_out;
1980
1981 if (hw->mac.ops.setup_link_speed)
1982 ret = hw->mac.ops.setup_link_speed(hw, autoneg, true, link_up);
1983
1984link_cfg_out:
1985 return ret;
1986}
1987
Auke Kok9a799d72007-09-15 14:07:45 -07001988static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
1989{
1990 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07001991 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001992 int i, j = 0;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08001993 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07001994 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001995 u32 txdctl, rxdctl, mhadd;
1996 u32 gpie;
Auke Kok9a799d72007-09-15 14:07:45 -07001997
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08001998 ixgbe_get_hw_control(adapter);
1999
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002000 if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) ||
2001 (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) {
Auke Kok9a799d72007-09-15 14:07:45 -07002002 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2003 gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002004 IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD);
Auke Kok9a799d72007-09-15 14:07:45 -07002005 } else {
2006 /* MSI only */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002007 gpie = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002008 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002009 /* XXX: to interrupt immediately for EICS writes, enable this */
2010 /* gpie |= IXGBE_GPIE_EIMEN; */
2011 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2012 }
2013
2014 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
2015 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
2016 * specifically only auto mask tx and rx interrupts */
2017 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07002018 }
2019
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002020 /* Enable fan failure interrupt if media type is copper */
2021 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
2022 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
2023 gpie |= IXGBE_SDP1_GPIEN;
2024 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2025 }
2026
Auke Kok9a799d72007-09-15 14:07:45 -07002027 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
Auke Kok9a799d72007-09-15 14:07:45 -07002028 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2029 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2030 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2031
2032 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2033 }
2034
2035 for (i = 0; i < adapter->num_tx_queues; i++) {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002036 j = adapter->tx_ring[i].reg_idx;
2037 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002038 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2039 txdctl |= (8 << 16);
Auke Kok9a799d72007-09-15 14:07:45 -07002040 txdctl |= IXGBE_TXDCTL_ENABLE;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002041 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
Auke Kok9a799d72007-09-15 14:07:45 -07002042 }
2043
2044 for (i = 0; i < adapter->num_rx_queues; i++) {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002045 j = adapter->rx_ring[i].reg_idx;
2046 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2047 /* enable PTHRESH=32 descriptors (half the internal cache)
2048 * and HTHRESH=0 descriptors (to minimize latency on fetch),
2049 * this also removes a pesky rx_no_buffer_count increment */
2050 rxdctl |= 0x0020;
Auke Kok9a799d72007-09-15 14:07:45 -07002051 rxdctl |= IXGBE_RXDCTL_ENABLE;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002052 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl);
Auke Kok9a799d72007-09-15 14:07:45 -07002053 }
2054 /* enable all receives */
2055 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2056 rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN);
2057 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl);
2058
2059 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
2060 ixgbe_configure_msix(adapter);
2061 else
2062 ixgbe_configure_msi_and_legacy(adapter);
2063
Peter P Waskiewicz Jr7adf1522008-12-26 01:36:05 -08002064 ixgbe_napi_add_all(adapter);
2065
Auke Kok9a799d72007-09-15 14:07:45 -07002066 clear_bit(__IXGBE_DOWN, &adapter->state);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002067 ixgbe_napi_enable_all(adapter);
2068
2069 /* clear any pending interrupts, may auto mask */
2070 IXGBE_READ_REG(hw, IXGBE_EICR);
2071
Auke Kok9a799d72007-09-15 14:07:45 -07002072 ixgbe_irq_enable(adapter);
2073
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002074 err = ixgbe_link_config(hw);
2075 if (err)
2076 dev_err(&adapter->pdev->dev, "link_config FAILED %d\n", err);
2077
Peter P Waskiewicz Jr1da100b2009-01-19 16:55:03 -08002078 /* enable transmits */
2079 netif_tx_start_all_queues(netdev);
2080
Auke Kok9a799d72007-09-15 14:07:45 -07002081 /* bring the link up in the watchdog, this could race with our first
2082 * link up interrupt but shouldn't be a problem */
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002083 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
2084 adapter->link_check_timeout = jiffies;
Auke Kok9a799d72007-09-15 14:07:45 -07002085 mod_timer(&adapter->watchdog_timer, jiffies);
2086 return 0;
2087}
2088
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08002089void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
2090{
2091 WARN_ON(in_interrupt());
2092 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
2093 msleep(1);
2094 ixgbe_down(adapter);
2095 ixgbe_up(adapter);
2096 clear_bit(__IXGBE_RESETTING, &adapter->state);
2097}
2098
Auke Kok9a799d72007-09-15 14:07:45 -07002099int ixgbe_up(struct ixgbe_adapter *adapter)
2100{
2101 /* hardware has been reset, we need to reload some things */
2102 ixgbe_configure(adapter);
2103
2104 return ixgbe_up_complete(adapter);
2105}
2106
2107void ixgbe_reset(struct ixgbe_adapter *adapter)
2108{
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002109 struct ixgbe_hw *hw = &adapter->hw;
2110 if (hw->mac.ops.init_hw(hw))
2111 dev_err(&adapter->pdev->dev, "Hardware Error\n");
Auke Kok9a799d72007-09-15 14:07:45 -07002112
2113 /* reprogram the RAR[0] in case user changed it. */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002114 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07002115
2116}
2117
Auke Kok9a799d72007-09-15 14:07:45 -07002118/**
2119 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
2120 * @adapter: board private structure
2121 * @rx_ring: ring to free buffers from
2122 **/
2123static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002124 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07002125{
2126 struct pci_dev *pdev = adapter->pdev;
2127 unsigned long size;
2128 unsigned int i;
2129
2130 /* Free all the Rx ring sk_buffs */
2131
2132 for (i = 0; i < rx_ring->count; i++) {
2133 struct ixgbe_rx_buffer *rx_buffer_info;
2134
2135 rx_buffer_info = &rx_ring->rx_buffer_info[i];
2136 if (rx_buffer_info->dma) {
2137 pci_unmap_single(pdev, rx_buffer_info->dma,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002138 rx_ring->rx_buf_len,
2139 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07002140 rx_buffer_info->dma = 0;
2141 }
2142 if (rx_buffer_info->skb) {
2143 dev_kfree_skb(rx_buffer_info->skb);
2144 rx_buffer_info->skb = NULL;
2145 }
2146 if (!rx_buffer_info->page)
2147 continue;
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07002148 pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2,
2149 PCI_DMA_FROMDEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07002150 rx_buffer_info->page_dma = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002151 put_page(rx_buffer_info->page);
2152 rx_buffer_info->page = NULL;
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07002153 rx_buffer_info->page_offset = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002154 }
2155
2156 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
2157 memset(rx_ring->rx_buffer_info, 0, size);
2158
2159 /* Zero out the descriptor ring */
2160 memset(rx_ring->desc, 0, rx_ring->size);
2161
2162 rx_ring->next_to_clean = 0;
2163 rx_ring->next_to_use = 0;
2164
2165 writel(0, adapter->hw.hw_addr + rx_ring->head);
2166 writel(0, adapter->hw.hw_addr + rx_ring->tail);
2167}
2168
2169/**
2170 * ixgbe_clean_tx_ring - Free Tx Buffers
2171 * @adapter: board private structure
2172 * @tx_ring: ring to be cleaned
2173 **/
2174static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002175 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07002176{
2177 struct ixgbe_tx_buffer *tx_buffer_info;
2178 unsigned long size;
2179 unsigned int i;
2180
2181 /* Free all the Tx ring sk_buffs */
2182
2183 for (i = 0; i < tx_ring->count; i++) {
2184 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2185 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
2186 }
2187
2188 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
2189 memset(tx_ring->tx_buffer_info, 0, size);
2190
2191 /* Zero out the descriptor ring */
2192 memset(tx_ring->desc, 0, tx_ring->size);
2193
2194 tx_ring->next_to_use = 0;
2195 tx_ring->next_to_clean = 0;
2196
2197 writel(0, adapter->hw.hw_addr + tx_ring->head);
2198 writel(0, adapter->hw.hw_addr + tx_ring->tail);
2199}
2200
2201/**
Auke Kok9a799d72007-09-15 14:07:45 -07002202 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
2203 * @adapter: board private structure
2204 **/
2205static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
2206{
2207 int i;
2208
2209 for (i = 0; i < adapter->num_rx_queues; i++)
2210 ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2211}
2212
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002213/**
2214 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
2215 * @adapter: board private structure
2216 **/
2217static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
2218{
2219 int i;
2220
2221 for (i = 0; i < adapter->num_tx_queues; i++)
2222 ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]);
2223}
2224
Auke Kok9a799d72007-09-15 14:07:45 -07002225void ixgbe_down(struct ixgbe_adapter *adapter)
2226{
2227 struct net_device *netdev = adapter->netdev;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002228 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07002229 u32 rxctrl;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002230 u32 txdctl;
2231 int i, j;
Auke Kok9a799d72007-09-15 14:07:45 -07002232
2233 /* signal that we are down to the interrupt handler */
2234 set_bit(__IXGBE_DOWN, &adapter->state);
2235
2236 /* disable receives */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002237 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2238 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
Auke Kok9a799d72007-09-15 14:07:45 -07002239
2240 netif_tx_disable(netdev);
2241
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002242 IXGBE_WRITE_FLUSH(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07002243 msleep(10);
2244
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002245 netif_tx_stop_all_queues(netdev);
2246
Auke Kok9a799d72007-09-15 14:07:45 -07002247 ixgbe_irq_disable(adapter);
2248
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002249 ixgbe_napi_disable_all(adapter);
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002250
Auke Kok9a799d72007-09-15 14:07:45 -07002251 del_timer_sync(&adapter->watchdog_timer);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002252 cancel_work_sync(&adapter->watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07002253
Jesse Brandeburg7f821872008-09-11 20:00:16 -07002254 /* disable transmits in the hardware now that interrupts are off */
2255 for (i = 0; i < adapter->num_tx_queues; i++) {
2256 j = adapter->tx_ring[i].reg_idx;
2257 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2258 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
2259 (txdctl & ~IXGBE_TXDCTL_ENABLE));
2260 }
2261
Auke Kok9a799d72007-09-15 14:07:45 -07002262 netif_carrier_off(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002263
Jeff Garzik5dd2d332008-10-16 05:09:31 -04002264#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07002265 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
2266 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
2267 dca_remove_requester(&adapter->pdev->dev);
2268 }
2269
2270#endif
Paul Larson6f4a0e42008-06-24 17:00:56 -07002271 if (!pci_channel_offline(adapter->pdev))
2272 ixgbe_reset(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002273 ixgbe_clean_all_tx_rings(adapter);
2274 ixgbe_clean_all_rx_rings(adapter);
2275
Jeff Garzik5dd2d332008-10-16 05:09:31 -04002276#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07002277 /* since we reset the hardware DCA settings were cleared */
2278 if (dca_add_requester(&adapter->pdev->dev) == 0) {
2279 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
2280 /* always use CB2 mode, difference is masked
2281 * in the CB driver */
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002282 IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2);
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07002283 ixgbe_setup_dca(adapter);
2284 }
2285#endif
Auke Kok9a799d72007-09-15 14:07:45 -07002286}
2287
Auke Kok9a799d72007-09-15 14:07:45 -07002288/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002289 * ixgbe_poll - NAPI Rx polling callback
2290 * @napi: structure for representing this polling device
2291 * @budget: how many packets driver is allowed to clean
2292 *
2293 * This function is used for legacy and MSI, NAPI mode
Auke Kok9a799d72007-09-15 14:07:45 -07002294 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002295static int ixgbe_poll(struct napi_struct *napi, int budget)
Auke Kok9a799d72007-09-15 14:07:45 -07002296{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002297 struct ixgbe_q_vector *q_vector = container_of(napi,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002298 struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002299 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg74ce8dd22008-09-11 20:03:23 -07002300 int tx_cleaned, work_done = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002301
Jeff Garzik5dd2d332008-10-16 05:09:31 -04002302#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08002303 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
2304 ixgbe_update_tx_dca(adapter, adapter->tx_ring);
2305 ixgbe_update_rx_dca(adapter, adapter->rx_ring);
2306 }
2307#endif
2308
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002309 tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring);
Herbert Xu78b6f4c2009-01-18 21:49:45 -08002310 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring, &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07002311
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002312 if (tx_cleaned)
2313 work_done = budget;
2314
David S. Miller53e52c72008-01-07 21:06:12 -08002315 /* If budget not fully consumed, exit the polling mode */
2316 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08002317 napi_complete(napi);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002318 if (adapter->itr_setting & 3)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002319 ixgbe_set_itr(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08002320 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2321 ixgbe_irq_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002322 }
Auke Kok9a799d72007-09-15 14:07:45 -07002323 return work_done;
2324}
2325
2326/**
2327 * ixgbe_tx_timeout - Respond to a Tx Hang
2328 * @netdev: network interface device structure
2329 **/
2330static void ixgbe_tx_timeout(struct net_device *netdev)
2331{
2332 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2333
2334 /* Do the reset outside of interrupt context */
2335 schedule_work(&adapter->reset_task);
2336}
2337
2338static void ixgbe_reset_task(struct work_struct *work)
2339{
2340 struct ixgbe_adapter *adapter;
2341 adapter = container_of(work, struct ixgbe_adapter, reset_task);
2342
Alexander Duyck2f90b862008-11-20 20:52:10 -08002343 /* If we're already down or resetting, just bail */
2344 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
2345 test_bit(__IXGBE_RESETTING, &adapter->state))
2346 return;
2347
Auke Kok9a799d72007-09-15 14:07:45 -07002348 adapter->tx_timeout_count++;
2349
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08002350 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002351}
2352
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002353#ifdef CONFIG_IXGBE_DCB
2354static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002355{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002356 bool ret = false;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002357
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002358 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2359 adapter->ring_feature[RING_F_DCB].mask = 0x7 << 3;
2360 adapter->num_rx_queues =
2361 adapter->ring_feature[RING_F_DCB].indices;
2362 adapter->num_tx_queues =
2363 adapter->ring_feature[RING_F_DCB].indices;
2364 ret = true;
2365 } else {
2366 adapter->ring_feature[RING_F_DCB].mask = 0;
2367 adapter->ring_feature[RING_F_DCB].indices = 0;
2368 ret = false;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002369 }
2370
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002371 return ret;
2372}
2373#endif
2374
2375static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
2376{
2377 bool ret = false;
2378
2379 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
2380 adapter->ring_feature[RING_F_RSS].mask = 0xF;
2381 adapter->num_rx_queues =
2382 adapter->ring_feature[RING_F_RSS].indices;
2383 adapter->num_tx_queues =
2384 adapter->ring_feature[RING_F_RSS].indices;
2385 ret = true;
2386 } else {
2387 adapter->ring_feature[RING_F_RSS].mask = 0;
2388 adapter->ring_feature[RING_F_RSS].indices = 0;
2389 ret = false;
2390 }
2391
2392 return ret;
2393}
2394
2395static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
2396{
2397 /* Start with base case */
2398 adapter->num_rx_queues = 1;
2399 adapter->num_tx_queues = 1;
2400
2401#ifdef CONFIG_IXGBE_DCB
2402 if (ixgbe_set_dcb_queues(adapter))
2403 return;
2404
2405#endif
2406 if (ixgbe_set_rss_queues(adapter))
2407 return;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002408}
2409
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002410static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002411 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002412{
2413 int err, vector_threshold;
2414
2415 /* We'll want at least 3 (vector_threshold):
2416 * 1) TxQ[0] Cleanup
2417 * 2) RxQ[0] Cleanup
2418 * 3) Other (Link Status Change, etc.)
2419 * 4) TCP Timer (optional)
2420 */
2421 vector_threshold = MIN_MSIX_COUNT;
2422
2423 /* The more we get, the more we will assign to Tx/Rx Cleanup
2424 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
2425 * Right now, we simply care about how many we'll get; we'll
2426 * set them up later while requesting irq's.
2427 */
2428 while (vectors >= vector_threshold) {
2429 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002430 vectors);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002431 if (!err) /* Success in acquiring all requested vectors. */
2432 break;
2433 else if (err < 0)
2434 vectors = 0; /* Nasty failure, quit now */
2435 else /* err == number of vectors we should try again with */
2436 vectors = err;
2437 }
2438
2439 if (vectors < vector_threshold) {
2440 /* Can't allocate enough MSI-X interrupts? Oh well.
2441 * This just means we'll go with either a single MSI
2442 * vector or fall back to legacy interrupts.
2443 */
2444 DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n");
2445 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2446 kfree(adapter->msix_entries);
2447 adapter->msix_entries = NULL;
Alexander Duyck2f90b862008-11-20 20:52:10 -08002448 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002449 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002450 ixgbe_set_num_queues(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002451 } else {
2452 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
Peter P Waskiewicz Jreb7f1392009-02-01 01:18:58 -08002453 /*
2454 * Adjust for only the vectors we'll use, which is minimum
2455 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
2456 * vectors we were allocated.
2457 */
2458 adapter->num_msix_vectors = min(vectors,
2459 adapter->max_msix_q_vectors + NON_Q_VECTORS);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002460 }
2461}
2462
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002463/**
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002464 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002465 * @adapter: board private structure to initialize
2466 *
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002467 * Cache the descriptor ring offsets for RSS to the assigned rings.
2468 *
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002469 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002470static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002471{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002472 int i;
2473 bool ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002474
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002475 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
2476 for (i = 0; i < adapter->num_rx_queues; i++)
2477 adapter->rx_ring[i].reg_idx = i;
2478 for (i = 0; i < adapter->num_tx_queues; i++)
2479 adapter->tx_ring[i].reg_idx = i;
2480 ret = true;
2481 } else {
2482 ret = false;
2483 }
2484
2485 return ret;
2486}
2487
2488#ifdef CONFIG_IXGBE_DCB
2489/**
2490 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
2491 * @adapter: board private structure to initialize
2492 *
2493 * Cache the descriptor ring offsets for DCB to the assigned rings.
2494 *
2495 **/
2496static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
2497{
2498 int i;
2499 bool ret = false;
2500 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
2501
2502 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2503 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Alexander Duyck2f90b862008-11-20 20:52:10 -08002504 /* the number of queues is assumed to be symmetric */
2505 for (i = 0; i < dcb_i; i++) {
2506 adapter->rx_ring[i].reg_idx = i << 3;
2507 adapter->tx_ring[i].reg_idx = i << 2;
2508 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002509 ret = true;
2510 } else {
2511 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002512 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002513 } else {
2514 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002515 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08002516
2517 return ret;
2518}
2519#endif
2520
2521/**
2522 * ixgbe_cache_ring_register - Descriptor ring to register mapping
2523 * @adapter: board private structure to initialize
2524 *
2525 * Once we know the feature-set enabled for the device, we'll cache
2526 * the register offset the descriptor ring is assigned to.
2527 *
2528 * Note, the order the various feature calls is important. It must start with
2529 * the "most" features enabled at the same time, then trickle down to the
2530 * least amount of features turned on at once.
2531 **/
2532static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
2533{
2534 /* start with default case */
2535 adapter->rx_ring[0].reg_idx = 0;
2536 adapter->tx_ring[0].reg_idx = 0;
2537
2538#ifdef CONFIG_IXGBE_DCB
2539 if (ixgbe_cache_ring_dcb(adapter))
2540 return;
2541
2542#endif
2543 if (ixgbe_cache_ring_rss(adapter))
2544 return;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002545}
2546
Auke Kok9a799d72007-09-15 14:07:45 -07002547/**
2548 * ixgbe_alloc_queues - Allocate memory for all rings
2549 * @adapter: board private structure to initialize
2550 *
2551 * We allocate one ring per queue at run-time since we don't know the
Wang Chena4d2f342008-12-03 22:05:58 -08002552 * number of queues at compile-time.
Auke Kok9a799d72007-09-15 14:07:45 -07002553 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08002554static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07002555{
2556 int i;
2557
2558 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002559 sizeof(struct ixgbe_ring), GFP_KERNEL);
Auke Kok9a799d72007-09-15 14:07:45 -07002560 if (!adapter->tx_ring)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002561 goto err_tx_ring_allocation;
Auke Kok9a799d72007-09-15 14:07:45 -07002562
2563 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002564 sizeof(struct ixgbe_ring), GFP_KERNEL);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002565 if (!adapter->rx_ring)
2566 goto err_rx_ring_allocation;
2567
2568 for (i = 0; i < adapter->num_tx_queues; i++) {
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002569 adapter->tx_ring[i].count = adapter->tx_ring_count;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002570 adapter->tx_ring[i].queue_index = i;
2571 }
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002572
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002573 for (i = 0; i < adapter->num_rx_queues; i++) {
Jesse Brandeburgb9804972008-09-11 20:00:29 -07002574 adapter->rx_ring[i].count = adapter->rx_ring_count;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002575 adapter->rx_ring[i].queue_index = i;
Auke Kok9a799d72007-09-15 14:07:45 -07002576 }
2577
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002578 ixgbe_cache_ring_register(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07002579
2580 return 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002581
2582err_rx_ring_allocation:
2583 kfree(adapter->tx_ring);
2584err_tx_ring_allocation:
2585 return -ENOMEM;
2586}
2587
2588/**
2589 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
2590 * @adapter: board private structure to initialize
2591 *
2592 * Attempt to configure the interrupts using the best available
2593 * capabilities of the hardware and the kernel.
2594 **/
Al Virofeea6a52008-11-27 15:34:07 -08002595static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002596{
2597 int err = 0;
2598 int vector, v_budget;
2599
2600 /*
2601 * It's easy to be greedy for MSI-X vectors, but it really
2602 * doesn't do us much good if we have a lot more vectors
2603 * than CPU's. So let's be conservative and only ask for
2604 * (roughly) twice the number of vectors as there are CPU's.
2605 */
2606 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002607 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002608
2609 /*
2610 * At the same time, hardware can only support a maximum of
2611 * MAX_MSIX_COUNT vectors. With features such as RSS and VMDq,
2612 * we can easily reach upwards of 64 Rx descriptor queues and
2613 * 32 Tx queues. Thus, we cap it off in those rare cases where
2614 * the cpu count also exceeds our vector limit.
2615 */
2616 v_budget = min(v_budget, MAX_MSIX_COUNT);
2617
2618 /* A failure in MSI-X entry allocation isn't fatal, but it does
2619 * mean we disable MSI-X capabilities of the adapter. */
2620 adapter->msix_entries = kcalloc(v_budget,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002621 sizeof(struct msix_entry), GFP_KERNEL);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002622 if (!adapter->msix_entries) {
Alexander Duyck2f90b862008-11-20 20:52:10 -08002623 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002624 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
2625 ixgbe_set_num_queues(adapter);
2626 kfree(adapter->tx_ring);
2627 kfree(adapter->rx_ring);
2628 err = ixgbe_alloc_queues(adapter);
2629 if (err) {
2630 DPRINTK(PROBE, ERR, "Unable to allocate memory "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002631 "for queues\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002632 goto out;
2633 }
2634
2635 goto try_msi;
2636 }
2637
2638 for (vector = 0; vector < v_budget; vector++)
2639 adapter->msix_entries[vector].entry = vector;
2640
2641 ixgbe_acquire_msix_vectors(adapter, v_budget);
2642
2643 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
2644 goto out;
2645
2646try_msi:
2647 err = pci_enable_msi(adapter->pdev);
2648 if (!err) {
2649 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
2650 } else {
2651 DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002652 "falling back to legacy. Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002653 /* reset err */
2654 err = 0;
2655 }
2656
2657out:
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08002658 /* Notify the stack of the (possibly) reduced Tx Queue count. */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002659 adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002660
2661 return err;
2662}
2663
Alexander Duyck2f90b862008-11-20 20:52:10 -08002664void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002665{
2666 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2667 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2668 pci_disable_msix(adapter->pdev);
2669 kfree(adapter->msix_entries);
2670 adapter->msix_entries = NULL;
2671 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
2672 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
2673 pci_disable_msi(adapter->pdev);
2674 }
2675 return;
2676}
2677
2678/**
2679 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
2680 * @adapter: board private structure to initialize
2681 *
2682 * We determine which interrupt scheme to use based on...
2683 * - Kernel support (MSI, MSI-X)
2684 * - which can be user-defined (via MODULE_PARAM)
2685 * - Hardware queue count (num_*_queues)
2686 * - defined by miscellaneous hardware support/features (RSS, etc.)
2687 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08002688int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002689{
2690 int err;
2691
2692 /* Number of supported queues */
2693 ixgbe_set_num_queues(adapter);
2694
2695 err = ixgbe_alloc_queues(adapter);
2696 if (err) {
2697 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
2698 goto err_alloc_queues;
2699 }
2700
2701 err = ixgbe_set_interrupt_capability(adapter);
2702 if (err) {
2703 DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n");
2704 goto err_set_interrupt;
2705 }
2706
2707 DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002708 "Tx Queue count = %u\n",
2709 (adapter->num_rx_queues > 1) ? "Enabled" :
2710 "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002711
2712 set_bit(__IXGBE_DOWN, &adapter->state);
2713
2714 return 0;
2715
2716err_set_interrupt:
2717 kfree(adapter->tx_ring);
2718 kfree(adapter->rx_ring);
2719err_alloc_queues:
2720 return err;
Auke Kok9a799d72007-09-15 14:07:45 -07002721}
2722
2723/**
Donald Skidmorec4900be2008-11-20 21:11:42 -08002724 * ixgbe_sfp_timer - worker thread to find a missing module
2725 * @data: pointer to our adapter struct
2726 **/
2727static void ixgbe_sfp_timer(unsigned long data)
2728{
2729 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
2730
2731 /* Do the sfp_timer outside of interrupt context due to the
2732 * delays that sfp+ detection requires
2733 */
2734 schedule_work(&adapter->sfp_task);
2735}
2736
2737/**
2738 * ixgbe_sfp_task - worker thread to find a missing module
2739 * @work: pointer to work_struct containing our data
2740 **/
2741static void ixgbe_sfp_task(struct work_struct *work)
2742{
2743 struct ixgbe_adapter *adapter = container_of(work,
2744 struct ixgbe_adapter,
2745 sfp_task);
2746 struct ixgbe_hw *hw = &adapter->hw;
2747
2748 if ((hw->phy.type == ixgbe_phy_nl) &&
2749 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
2750 s32 ret = hw->phy.ops.identify_sfp(hw);
2751 if (ret)
2752 goto reschedule;
2753 ret = hw->phy.ops.reset(hw);
2754 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
2755 DPRINTK(PROBE, ERR, "failed to initialize because an "
2756 "unsupported SFP+ module type was detected.\n"
2757 "Reload the driver after installing a "
2758 "supported module.\n");
2759 unregister_netdev(adapter->netdev);
2760 } else {
2761 DPRINTK(PROBE, INFO, "detected SFP+: %d\n",
2762 hw->phy.sfp_type);
2763 }
2764 /* don't need this routine any more */
2765 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
2766 }
2767 return;
2768reschedule:
2769 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
2770 mod_timer(&adapter->sfp_timer,
2771 round_jiffies(jiffies + (2 * HZ)));
2772}
2773
2774/**
Auke Kok9a799d72007-09-15 14:07:45 -07002775 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
2776 * @adapter: board private structure to initialize
2777 *
2778 * ixgbe_sw_init initializes the Adapter private data structure.
2779 * Fields are initialized based on PCI device information and
2780 * OS network device settings (MTU size).
2781 **/
2782static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
2783{
2784 struct ixgbe_hw *hw = &adapter->hw;
2785 struct pci_dev *pdev = adapter->pdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002786 unsigned int rss;
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08002787#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08002788 int j;
2789 struct tc_configuration *tc;
2790#endif
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002791
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002792 /* PCI config space info */
2793
2794 hw->vendor_id = pdev->vendor;
2795 hw->device_id = pdev->device;
2796 hw->revision_id = pdev->revision;
2797 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2798 hw->subsystem_device_id = pdev->subsystem_device;
2799
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002800 /* Set capability flags */
2801 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
2802 adapter->ring_feature[RING_F_RSS].indices = rss;
2803 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
Alexander Duyck2f90b862008-11-20 20:52:10 -08002804 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
Peter P Waskiewicz Jreb7f1392009-02-01 01:18:58 -08002805 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
Alexander Duyck2f90b862008-11-20 20:52:10 -08002806
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08002807#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08002808 /* Configure DCB traffic classes */
2809 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
2810 tc = &adapter->dcb_cfg.tc_config[j];
2811 tc->path[DCB_TX_CONFIG].bwg_id = 0;
2812 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
2813 tc->path[DCB_RX_CONFIG].bwg_id = 0;
2814 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
2815 tc->dcb_pfc = pfc_disabled;
2816 }
2817 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
2818 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
2819 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
2820 adapter->dcb_cfg.round_robin_enable = false;
2821 adapter->dcb_set_bitmap = 0x00;
2822 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
2823 adapter->ring_feature[RING_F_DCB].indices);
2824
2825#endif
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002826 if (hw->mac.ops.get_media_type &&
2827 (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper))
2828 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
Auke Kok9a799d72007-09-15 14:07:45 -07002829
2830 /* default flow control settings */
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08002831 hw->fc.requested_mode = ixgbe_fc_none;
Jesse Brandeburg2b9ade92008-08-26 04:27:10 -07002832 hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
2833 hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
2834 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
2835 hw->fc.send_xon = true;
Auke Kok9a799d72007-09-15 14:07:45 -07002836
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002837 /* enable itr by default in dynamic mode */
2838 adapter->itr_setting = 1;
2839 adapter->eitr_param = 20000;
2840
2841 /* set defaults for eitr in MegaBytes */
2842 adapter->eitr_low = 10;
2843 adapter->eitr_high = 20;
2844
2845 /* set default ring sizes */
2846 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
2847 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
2848
Auke Kok9a799d72007-09-15 14:07:45 -07002849 /* initialize eeprom parameters */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07002850 if (ixgbe_init_eeprom_params_generic(hw)) {
Auke Kok9a799d72007-09-15 14:07:45 -07002851 dev_err(&pdev->dev, "EEPROM initialization failed\n");
2852 return -EIO;
2853 }
2854
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002855 /* enable rx csum by default */
Auke Kok9a799d72007-09-15 14:07:45 -07002856 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
2857
Auke Kok9a799d72007-09-15 14:07:45 -07002858 set_bit(__IXGBE_DOWN, &adapter->state);
2859
2860 return 0;
2861}
2862
2863/**
2864 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
2865 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002866 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07002867 *
2868 * Return 0 on success, negative on failure
2869 **/
2870int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002871 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07002872{
2873 struct pci_dev *pdev = adapter->pdev;
2874 int size;
2875
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002876 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
2877 tx_ring->tx_buffer_info = vmalloc(size);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002878 if (!tx_ring->tx_buffer_info)
2879 goto err;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002880 memset(tx_ring->tx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07002881
2882 /* round up to nearest 4K */
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002883 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc) +
2884 sizeof(u32);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002885 tx_ring->size = ALIGN(tx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07002886
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002887 tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
2888 &tx_ring->dma);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002889 if (!tx_ring->desc)
2890 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07002891
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002892 tx_ring->next_to_use = 0;
2893 tx_ring->next_to_clean = 0;
2894 tx_ring->work_limit = tx_ring->count;
Auke Kok9a799d72007-09-15 14:07:45 -07002895 return 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07002896
2897err:
2898 vfree(tx_ring->tx_buffer_info);
2899 tx_ring->tx_buffer_info = NULL;
2900 DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit "
2901 "descriptor ring\n");
2902 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07002903}
2904
2905/**
Alexander Duyck69888672008-09-11 20:05:39 -07002906 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
2907 * @adapter: board private structure
2908 *
2909 * If this function returns with an error, then it's possible one or
2910 * more of the rings is populated (while the rest are not). It is the
2911 * callers duty to clean those orphaned rings.
2912 *
2913 * Return 0 on success, negative on failure
2914 **/
2915static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
2916{
2917 int i, err = 0;
2918
2919 for (i = 0; i < adapter->num_tx_queues; i++) {
2920 err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]);
2921 if (!err)
2922 continue;
2923 DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i);
2924 break;
2925 }
2926
2927 return err;
2928}
2929
2930/**
Auke Kok9a799d72007-09-15 14:07:45 -07002931 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
2932 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002933 * @rx_ring: rx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07002934 *
2935 * Returns 0 on success, negative on failure
2936 **/
2937int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002938 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07002939{
2940 struct pci_dev *pdev = adapter->pdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002941 int size;
Auke Kok9a799d72007-09-15 14:07:45 -07002942
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002943 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
2944 rx_ring->rx_buffer_info = vmalloc(size);
2945 if (!rx_ring->rx_buffer_info) {
Auke Kok9a799d72007-09-15 14:07:45 -07002946 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002947 "vmalloc allocation failed for the rx desc ring\n");
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002948 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07002949 }
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002950 memset(rx_ring->rx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07002951
Auke Kok9a799d72007-09-15 14:07:45 -07002952 /* Round up to nearest 4K */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002953 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
2954 rx_ring->size = ALIGN(rx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07002955
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002956 rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07002957
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002958 if (!rx_ring->desc) {
Auke Kok9a799d72007-09-15 14:07:45 -07002959 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07002960 "Memory allocation failed for the rx desc ring\n");
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002961 vfree(rx_ring->rx_buffer_info);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002962 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07002963 }
2964
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002965 rx_ring->next_to_clean = 0;
2966 rx_ring->next_to_use = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002967
2968 return 0;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002969
2970alloc_failed:
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002971 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07002972}
2973
2974/**
Alexander Duyck69888672008-09-11 20:05:39 -07002975 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
2976 * @adapter: board private structure
2977 *
2978 * If this function returns with an error, then it's possible one or
2979 * more of the rings is populated (while the rest are not). It is the
2980 * callers duty to clean those orphaned rings.
2981 *
2982 * Return 0 on success, negative on failure
2983 **/
2984
2985static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
2986{
2987 int i, err = 0;
2988
2989 for (i = 0; i < adapter->num_rx_queues; i++) {
2990 err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]);
2991 if (!err)
2992 continue;
2993 DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i);
2994 break;
2995 }
2996
2997 return err;
2998}
2999
3000/**
Auke Kok9a799d72007-09-15 14:07:45 -07003001 * ixgbe_free_tx_resources - Free Tx Resources per Queue
3002 * @adapter: board private structure
3003 * @tx_ring: Tx descriptor ring for a specific queue
3004 *
3005 * Free all transmit software resources
3006 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07003007void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
3008 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003009{
3010 struct pci_dev *pdev = adapter->pdev;
3011
3012 ixgbe_clean_tx_ring(adapter, tx_ring);
3013
3014 vfree(tx_ring->tx_buffer_info);
3015 tx_ring->tx_buffer_info = NULL;
3016
3017 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
3018
3019 tx_ring->desc = NULL;
3020}
3021
3022/**
3023 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
3024 * @adapter: board private structure
3025 *
3026 * Free all transmit software resources
3027 **/
3028static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
3029{
3030 int i;
3031
3032 for (i = 0; i < adapter->num_tx_queues; i++)
3033 ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]);
3034}
3035
3036/**
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003037 * ixgbe_free_rx_resources - Free Rx Resources
Auke Kok9a799d72007-09-15 14:07:45 -07003038 * @adapter: board private structure
3039 * @rx_ring: ring to clean the resources from
3040 *
3041 * Free all receive software resources
3042 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07003043void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
3044 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003045{
3046 struct pci_dev *pdev = adapter->pdev;
3047
3048 ixgbe_clean_rx_ring(adapter, rx_ring);
3049
3050 vfree(rx_ring->rx_buffer_info);
3051 rx_ring->rx_buffer_info = NULL;
3052
3053 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
3054
3055 rx_ring->desc = NULL;
3056}
3057
3058/**
3059 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
3060 * @adapter: board private structure
3061 *
3062 * Free all receive software resources
3063 **/
3064static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
3065{
3066 int i;
3067
3068 for (i = 0; i < adapter->num_rx_queues; i++)
3069 ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]);
3070}
3071
3072/**
Auke Kok9a799d72007-09-15 14:07:45 -07003073 * ixgbe_change_mtu - Change the Maximum Transfer Unit
3074 * @netdev: network interface device structure
3075 * @new_mtu: new value for maximum frame size
3076 *
3077 * Returns 0 on success, negative on failure
3078 **/
3079static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
3080{
3081 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3082 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3083
Jesse Brandeburg42c783c2008-09-11 19:56:28 -07003084 /* MTU < 68 is an error and causes problems on some kernels */
3085 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
Auke Kok9a799d72007-09-15 14:07:45 -07003086 return -EINVAL;
3087
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003088 DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003089 netdev->mtu, new_mtu);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003090 /* must set new MTU before calling down or up */
Auke Kok9a799d72007-09-15 14:07:45 -07003091 netdev->mtu = new_mtu;
3092
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003093 if (netif_running(netdev))
3094 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003095
3096 return 0;
3097}
3098
3099/**
3100 * ixgbe_open - Called when a network interface is made active
3101 * @netdev: network interface device structure
3102 *
3103 * Returns 0 on success, negative value on failure
3104 *
3105 * The open entry point is called when a network interface is made
3106 * active by the system (IFF_UP). At this point all resources needed
3107 * for transmit and receive operations are allocated, the interrupt
3108 * handler is registered with the OS, the watchdog timer is started,
3109 * and the stack is notified that the interface is ready.
3110 **/
3111static int ixgbe_open(struct net_device *netdev)
3112{
3113 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3114 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07003115
Auke Kok4bebfaa2008-02-11 09:26:01 -08003116 /* disallow open during test */
3117 if (test_bit(__IXGBE_TESTING, &adapter->state))
3118 return -EBUSY;
3119
Auke Kok9a799d72007-09-15 14:07:45 -07003120 /* allocate transmit descriptors */
3121 err = ixgbe_setup_all_tx_resources(adapter);
3122 if (err)
3123 goto err_setup_tx;
3124
Auke Kok9a799d72007-09-15 14:07:45 -07003125 /* allocate receive descriptors */
3126 err = ixgbe_setup_all_rx_resources(adapter);
3127 if (err)
3128 goto err_setup_rx;
3129
3130 ixgbe_configure(adapter);
3131
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003132 err = ixgbe_request_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003133 if (err)
3134 goto err_req_irq;
3135
Auke Kok9a799d72007-09-15 14:07:45 -07003136 err = ixgbe_up_complete(adapter);
3137 if (err)
3138 goto err_up;
3139
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003140 netif_tx_start_all_queues(netdev);
3141
Auke Kok9a799d72007-09-15 14:07:45 -07003142 return 0;
3143
3144err_up:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08003145 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003146 ixgbe_free_irq(adapter);
3147err_req_irq:
3148 ixgbe_free_all_rx_resources(adapter);
3149err_setup_rx:
3150 ixgbe_free_all_tx_resources(adapter);
3151err_setup_tx:
3152 ixgbe_reset(adapter);
3153
3154 return err;
3155}
3156
3157/**
3158 * ixgbe_close - Disables a network interface
3159 * @netdev: network interface device structure
3160 *
3161 * Returns 0, this is not allowed to fail
3162 *
3163 * The close entry point is called when an interface is de-activated
3164 * by the OS. The hardware is still under the drivers control, but
3165 * needs to be disabled. A global MAC reset is issued to stop the
3166 * hardware, and all transmit and receive resources are freed.
3167 **/
3168static int ixgbe_close(struct net_device *netdev)
3169{
3170 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07003171
3172 ixgbe_down(adapter);
3173 ixgbe_free_irq(adapter);
3174
3175 ixgbe_free_all_tx_resources(adapter);
3176 ixgbe_free_all_rx_resources(adapter);
3177
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08003178 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003179
3180 return 0;
3181}
3182
3183/**
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003184 * ixgbe_napi_add_all - prep napi structs for use
3185 * @adapter: private struct
3186 * helper function to napi_add each possible q_vector->napi
3187 */
Alexander Duyck2f90b862008-11-20 20:52:10 -08003188void ixgbe_napi_add_all(struct ixgbe_adapter *adapter)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003189{
3190 int q_idx, q_vectors;
Peter P Waskiewicz Jr7adf1522008-12-26 01:36:05 -08003191 struct net_device *netdev = adapter->netdev;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003192 int (*poll)(struct napi_struct *, int);
3193
Peter P Waskiewicz Jr7adf1522008-12-26 01:36:05 -08003194 /* check if we already have our netdev->napi_list populated */
3195 if (&netdev->napi_list != netdev->napi_list.next)
3196 return;
3197
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003198 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3199 poll = &ixgbe_clean_rxonly;
3200 /* Only enable as many vectors as we have rx queues. */
3201 q_vectors = adapter->num_rx_queues;
3202 } else {
3203 poll = &ixgbe_poll;
3204 /* only one q_vector for legacy modes */
3205 q_vectors = 1;
3206 }
3207
3208 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
3209 struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx];
3210 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
3211 }
3212}
3213
Alexander Duyck2f90b862008-11-20 20:52:10 -08003214void ixgbe_napi_del_all(struct ixgbe_adapter *adapter)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003215{
3216 int q_idx;
3217 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3218
3219 /* legacy and MSI only use one vector */
3220 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3221 q_vectors = 1;
3222
3223 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
3224 struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx];
3225 if (!q_vector->rxr_count)
3226 continue;
3227 netif_napi_del(&q_vector->napi);
3228 }
3229}
3230
3231#ifdef CONFIG_PM
3232static int ixgbe_resume(struct pci_dev *pdev)
3233{
3234 struct net_device *netdev = pci_get_drvdata(pdev);
3235 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3236 u32 err;
3237
3238 pci_set_power_state(pdev, PCI_D0);
3239 pci_restore_state(pdev);
3240 err = pci_enable_device(pdev);
3241 if (err) {
Alexander Duyck69888672008-09-11 20:05:39 -07003242 printk(KERN_ERR "ixgbe: Cannot enable PCI device from "
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003243 "suspend\n");
3244 return err;
3245 }
3246 pci_set_master(pdev);
3247
3248 pci_enable_wake(pdev, PCI_D3hot, 0);
3249 pci_enable_wake(pdev, PCI_D3cold, 0);
3250
3251 err = ixgbe_init_interrupt_scheme(adapter);
3252 if (err) {
3253 printk(KERN_ERR "ixgbe: Cannot initialize interrupts for "
3254 "device\n");
3255 return err;
3256 }
3257
3258 ixgbe_napi_add_all(adapter);
3259 ixgbe_reset(adapter);
3260
3261 if (netif_running(netdev)) {
3262 err = ixgbe_open(adapter->netdev);
3263 if (err)
3264 return err;
3265 }
3266
3267 netif_device_attach(netdev);
3268
3269 return 0;
3270}
3271
3272#endif /* CONFIG_PM */
3273static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
3274{
3275 struct net_device *netdev = pci_get_drvdata(pdev);
3276 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3277#ifdef CONFIG_PM
3278 int retval = 0;
3279#endif
3280
3281 netif_device_detach(netdev);
3282
3283 if (netif_running(netdev)) {
3284 ixgbe_down(adapter);
3285 ixgbe_free_irq(adapter);
3286 ixgbe_free_all_tx_resources(adapter);
3287 ixgbe_free_all_rx_resources(adapter);
3288 }
3289 ixgbe_reset_interrupt_capability(adapter);
3290 ixgbe_napi_del_all(adapter);
Peter P Waskiewicz Jr7adf1522008-12-26 01:36:05 -08003291 INIT_LIST_HEAD(&netdev->napi_list);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07003292 kfree(adapter->tx_ring);
3293 kfree(adapter->rx_ring);
3294
3295#ifdef CONFIG_PM
3296 retval = pci_save_state(pdev);
3297 if (retval)
3298 return retval;
3299#endif
3300
3301 pci_enable_wake(pdev, PCI_D3hot, 0);
3302 pci_enable_wake(pdev, PCI_D3cold, 0);
3303
3304 ixgbe_release_hw_control(adapter);
3305
3306 pci_disable_device(pdev);
3307
3308 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3309
3310 return 0;
3311}
3312
3313static void ixgbe_shutdown(struct pci_dev *pdev)
3314{
3315 ixgbe_suspend(pdev, PMSG_SUSPEND);
3316}
3317
3318/**
Auke Kok9a799d72007-09-15 14:07:45 -07003319 * ixgbe_update_stats - Update the board statistics counters.
3320 * @adapter: board private structure
3321 **/
3322void ixgbe_update_stats(struct ixgbe_adapter *adapter)
3323{
3324 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003325 u64 total_mpc = 0;
3326 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
Auke Kok9a799d72007-09-15 14:07:45 -07003327
3328 adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003329 for (i = 0; i < 8; i++) {
3330 /* for packet buffers not used, the register should read 0 */
3331 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
3332 missed_rx += mpc;
3333 adapter->stats.mpc[i] += mpc;
3334 total_mpc += adapter->stats.mpc[i];
3335 adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
Alexander Duyck2f90b862008-11-20 20:52:10 -08003336 adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
3337 adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
3338 adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
3339 adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
3340 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
3341 IXGBE_PXONRXC(i));
3342 adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw,
3343 IXGBE_PXONTXC(i));
3344 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
3345 IXGBE_PXOFFRXC(i));
3346 adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw,
3347 IXGBE_PXOFFTXC(i));
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003348 }
3349 adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
3350 /* work around hardware counting issue */
3351 adapter->stats.gprc -= missed_rx;
Auke Kok9a799d72007-09-15 14:07:45 -07003352
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003353 /* 82598 hardware only has a 32 bit counter in the high register */
Auke Kok9a799d72007-09-15 14:07:45 -07003354 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003355 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
3356 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
Auke Kok9a799d72007-09-15 14:07:45 -07003357 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
3358 adapter->stats.bprc += bprc;
3359 adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
3360 adapter->stats.mprc -= bprc;
3361 adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC);
3362 adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
3363 adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
3364 adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
3365 adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
3366 adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
3367 adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
Auke Kok9a799d72007-09-15 14:07:45 -07003368 adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
3369 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
Auke Kok9a799d72007-09-15 14:07:45 -07003370 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003371 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
3372 adapter->stats.lxontxc += lxon;
3373 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
3374 adapter->stats.lxofftxc += lxoff;
Auke Kok9a799d72007-09-15 14:07:45 -07003375 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
3376 adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003377 adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
3378 /*
3379 * 82598 errata - tx of flow control packets is included in tx counters
3380 */
3381 xon_off_tot = lxon + lxoff;
3382 adapter->stats.gptc -= xon_off_tot;
3383 adapter->stats.mptc -= xon_off_tot;
3384 adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
Auke Kok9a799d72007-09-15 14:07:45 -07003385 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
3386 adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
3387 adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
Auke Kok9a799d72007-09-15 14:07:45 -07003388 adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
3389 adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003390 adapter->stats.ptc64 -= xon_off_tot;
Auke Kok9a799d72007-09-15 14:07:45 -07003391 adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
3392 adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
3393 adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
3394 adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
3395 adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
Auke Kok9a799d72007-09-15 14:07:45 -07003396 adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
3397
3398 /* Fill out the OS statistics structure */
Auke Kok9a799d72007-09-15 14:07:45 -07003399 adapter->net_stats.multicast = adapter->stats.mprc;
3400
3401 /* Rx Errors */
3402 adapter->net_stats.rx_errors = adapter->stats.crcerrs +
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003403 adapter->stats.rlec;
Auke Kok9a799d72007-09-15 14:07:45 -07003404 adapter->net_stats.rx_dropped = 0;
3405 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
3406 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08003407 adapter->net_stats.rx_missed_errors = total_mpc;
Auke Kok9a799d72007-09-15 14:07:45 -07003408}
3409
3410/**
3411 * ixgbe_watchdog - Timer Call-back
3412 * @data: pointer to adapter cast into an unsigned long
3413 **/
3414static void ixgbe_watchdog(unsigned long data)
3415{
3416 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003417 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003418
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003419 /* Do the watchdog outside of interrupt context due to the lovely
3420 * delays that some of the newer hardware requires */
3421 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
3422 /* Cause software interrupt to ensure rx rings are cleaned */
3423 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3424 u32 eics =
3425 (1 << (adapter->num_msix_vectors - NON_Q_VECTORS)) - 1;
3426 IXGBE_WRITE_REG(hw, IXGBE_EICS, eics);
3427 } else {
3428 /* For legacy and MSI interrupts don't set any bits that
3429 * are enabled for EIAM, because this operation would
3430 * set *both* EIMS and EICS for any bit in EIAM */
3431 IXGBE_WRITE_REG(hw, IXGBE_EICS,
3432 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
3433 }
3434 /* Reset the timer */
3435 mod_timer(&adapter->watchdog_timer,
3436 round_jiffies(jiffies + 2 * HZ));
3437 }
3438
3439 schedule_work(&adapter->watchdog_task);
3440}
3441
3442/**
Alexander Duyck69888672008-09-11 20:05:39 -07003443 * ixgbe_watchdog_task - worker thread to bring link up
3444 * @work: pointer to work_struct containing our data
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003445 **/
3446static void ixgbe_watchdog_task(struct work_struct *work)
3447{
3448 struct ixgbe_adapter *adapter = container_of(work,
3449 struct ixgbe_adapter,
3450 watchdog_task);
3451 struct net_device *netdev = adapter->netdev;
3452 struct ixgbe_hw *hw = &adapter->hw;
3453 u32 link_speed = adapter->link_speed;
3454 bool link_up = adapter->link_up;
3455
3456 adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
3457
3458 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
3459 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
3460 if (link_up ||
3461 time_after(jiffies, (adapter->link_check_timeout +
3462 IXGBE_TRY_LINK_TIMEOUT))) {
3463 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
3464 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
3465 }
3466 adapter->link_up = link_up;
3467 adapter->link_speed = link_speed;
3468 }
Auke Kok9a799d72007-09-15 14:07:45 -07003469
3470 if (link_up) {
3471 if (!netif_carrier_ok(netdev)) {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003472 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3473 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
Auke Kok9a799d72007-09-15 14:07:45 -07003474#define FLOW_RX (frctl & IXGBE_FCTRL_RFCE)
3475#define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X)
Jeff Kirshera46e5342008-11-27 00:22:21 -08003476 printk(KERN_INFO "ixgbe: %s NIC Link is Up %s, "
3477 "Flow Control: %s\n",
3478 netdev->name,
3479 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
3480 "10 Gbps" :
3481 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
3482 "1 Gbps" : "unknown speed")),
3483 ((FLOW_RX && FLOW_TX) ? "RX/TX" :
3484 (FLOW_RX ? "RX" :
3485 (FLOW_TX ? "TX" : "None"))));
Auke Kok9a799d72007-09-15 14:07:45 -07003486
3487 netif_carrier_on(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07003488 } else {
3489 /* Force detection of hung controller */
3490 adapter->detect_tx_hung = true;
3491 }
3492 } else {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003493 adapter->link_up = false;
3494 adapter->link_speed = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003495 if (netif_carrier_ok(netdev)) {
Jeff Kirshera46e5342008-11-27 00:22:21 -08003496 printk(KERN_INFO "ixgbe: %s NIC Link is Down\n",
3497 netdev->name);
Auke Kok9a799d72007-09-15 14:07:45 -07003498 netif_carrier_off(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07003499 }
3500 }
3501
3502 ixgbe_update_stats(adapter);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003503 adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
Auke Kok9a799d72007-09-15 14:07:45 -07003504}
3505
Auke Kok9a799d72007-09-15 14:07:45 -07003506static int ixgbe_tso(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003507 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
3508 u32 tx_flags, u8 *hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07003509{
3510 struct ixgbe_adv_tx_context_desc *context_desc;
3511 unsigned int i;
3512 int err;
3513 struct ixgbe_tx_buffer *tx_buffer_info;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003514 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
3515 u32 mss_l4len_idx, l4len;
Auke Kok9a799d72007-09-15 14:07:45 -07003516
3517 if (skb_is_gso(skb)) {
3518 if (skb_header_cloned(skb)) {
3519 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3520 if (err)
3521 return err;
3522 }
3523 l4len = tcp_hdrlen(skb);
3524 *hdr_len += l4len;
3525
Al Viro8327d002007-12-10 18:54:12 +00003526 if (skb->protocol == htons(ETH_P_IP)) {
Auke Kok9a799d72007-09-15 14:07:45 -07003527 struct iphdr *iph = ip_hdr(skb);
3528 iph->tot_len = 0;
3529 iph->check = 0;
3530 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003531 iph->daddr, 0,
3532 IPPROTO_TCP,
3533 0);
Auke Kok9a799d72007-09-15 14:07:45 -07003534 adapter->hw_tso_ctxt++;
3535 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3536 ipv6_hdr(skb)->payload_len = 0;
3537 tcp_hdr(skb)->check =
3538 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003539 &ipv6_hdr(skb)->daddr,
3540 0, IPPROTO_TCP, 0);
Auke Kok9a799d72007-09-15 14:07:45 -07003541 adapter->hw_tso6_ctxt++;
3542 }
3543
3544 i = tx_ring->next_to_use;
3545
3546 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3547 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
3548
3549 /* VLAN MACLEN IPLEN */
3550 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
3551 vlan_macip_lens |=
3552 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
3553 vlan_macip_lens |= ((skb_network_offset(skb)) <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003554 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07003555 *hdr_len += skb_network_offset(skb);
3556 vlan_macip_lens |=
3557 (skb_transport_header(skb) - skb_network_header(skb));
3558 *hdr_len +=
3559 (skb_transport_header(skb) - skb_network_header(skb));
3560 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
3561 context_desc->seqnum_seed = 0;
3562
3563 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003564 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003565 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07003566
Al Viro8327d002007-12-10 18:54:12 +00003567 if (skb->protocol == htons(ETH_P_IP))
Auke Kok9a799d72007-09-15 14:07:45 -07003568 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
3569 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
3570 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
3571
3572 /* MSS L4LEN IDX */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003573 mss_l4len_idx =
Auke Kok9a799d72007-09-15 14:07:45 -07003574 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
3575 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07003576 /* use index 1 for TSO */
3577 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07003578 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
3579
3580 tx_buffer_info->time_stamp = jiffies;
3581 tx_buffer_info->next_to_watch = i;
3582
3583 i++;
3584 if (i == tx_ring->count)
3585 i = 0;
3586 tx_ring->next_to_use = i;
3587
3588 return true;
3589 }
3590 return false;
3591}
3592
3593static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003594 struct ixgbe_ring *tx_ring,
3595 struct sk_buff *skb, u32 tx_flags)
Auke Kok9a799d72007-09-15 14:07:45 -07003596{
3597 struct ixgbe_adv_tx_context_desc *context_desc;
3598 unsigned int i;
3599 struct ixgbe_tx_buffer *tx_buffer_info;
3600 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
3601
3602 if (skb->ip_summed == CHECKSUM_PARTIAL ||
3603 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
3604 i = tx_ring->next_to_use;
3605 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3606 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
3607
3608 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
3609 vlan_macip_lens |=
3610 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
3611 vlan_macip_lens |= (skb_network_offset(skb) <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003612 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07003613 if (skb->ip_summed == CHECKSUM_PARTIAL)
3614 vlan_macip_lens |= (skb_transport_header(skb) -
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003615 skb_network_header(skb));
Auke Kok9a799d72007-09-15 14:07:45 -07003616
3617 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
3618 context_desc->seqnum_seed = 0;
3619
3620 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003621 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07003622
3623 if (skb->ip_summed == CHECKSUM_PARTIAL) {
Auke Kok41825d72008-02-12 15:20:33 -08003624 switch (skb->protocol) {
Harvey Harrison09640e632009-02-01 00:45:17 -08003625 case cpu_to_be16(ETH_P_IP):
Auke Kok9a799d72007-09-15 14:07:45 -07003626 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
Auke Kok41825d72008-02-12 15:20:33 -08003627 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
3628 type_tucmd_mlhl |=
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003629 IXGBE_ADVTXD_TUCMD_L4T_TCP;
Auke Kok41825d72008-02-12 15:20:33 -08003630 break;
Harvey Harrison09640e632009-02-01 00:45:17 -08003631 case cpu_to_be16(ETH_P_IPV6):
Auke Kok41825d72008-02-12 15:20:33 -08003632 /* XXX what about other V6 headers?? */
3633 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3634 type_tucmd_mlhl |=
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003635 IXGBE_ADVTXD_TUCMD_L4T_TCP;
Auke Kok41825d72008-02-12 15:20:33 -08003636 break;
Auke Kok41825d72008-02-12 15:20:33 -08003637 default:
3638 if (unlikely(net_ratelimit())) {
3639 DPRINTK(PROBE, WARNING,
3640 "partial checksum but proto=%x!\n",
3641 skb->protocol);
3642 }
3643 break;
3644 }
Auke Kok9a799d72007-09-15 14:07:45 -07003645 }
3646
3647 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07003648 /* use index zero for tx checksum offload */
Auke Kok9a799d72007-09-15 14:07:45 -07003649 context_desc->mss_l4len_idx = 0;
3650
3651 tx_buffer_info->time_stamp = jiffies;
3652 tx_buffer_info->next_to_watch = i;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003653
Auke Kok9a799d72007-09-15 14:07:45 -07003654 adapter->hw_csum_tx_good++;
3655 i++;
3656 if (i == tx_ring->count)
3657 i = 0;
3658 tx_ring->next_to_use = i;
3659
3660 return true;
3661 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003662
Auke Kok9a799d72007-09-15 14:07:45 -07003663 return false;
3664}
3665
3666static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003667 struct ixgbe_ring *tx_ring,
3668 struct sk_buff *skb, unsigned int first)
Auke Kok9a799d72007-09-15 14:07:45 -07003669{
3670 struct ixgbe_tx_buffer *tx_buffer_info;
3671 unsigned int len = skb->len;
3672 unsigned int offset = 0, size, count = 0, i;
3673 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
3674 unsigned int f;
3675
3676 len -= skb->data_len;
3677
3678 i = tx_ring->next_to_use;
3679
3680 while (len) {
3681 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3682 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
3683
3684 tx_buffer_info->length = size;
3685 tx_buffer_info->dma = pci_map_single(adapter->pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003686 skb->data + offset,
3687 size, PCI_DMA_TODEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07003688 tx_buffer_info->time_stamp = jiffies;
3689 tx_buffer_info->next_to_watch = i;
3690
3691 len -= size;
3692 offset += size;
3693 count++;
3694 i++;
3695 if (i == tx_ring->count)
3696 i = 0;
3697 }
3698
3699 for (f = 0; f < nr_frags; f++) {
3700 struct skb_frag_struct *frag;
3701
3702 frag = &skb_shinfo(skb)->frags[f];
3703 len = frag->size;
3704 offset = frag->page_offset;
3705
3706 while (len) {
3707 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3708 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
3709
3710 tx_buffer_info->length = size;
3711 tx_buffer_info->dma = pci_map_page(adapter->pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003712 frag->page,
3713 offset,
3714 size,
3715 PCI_DMA_TODEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07003716 tx_buffer_info->time_stamp = jiffies;
3717 tx_buffer_info->next_to_watch = i;
3718
3719 len -= size;
3720 offset += size;
3721 count++;
3722 i++;
3723 if (i == tx_ring->count)
3724 i = 0;
3725 }
3726 }
3727 if (i == 0)
3728 i = tx_ring->count - 1;
3729 else
3730 i = i - 1;
3731 tx_ring->tx_buffer_info[i].skb = skb;
3732 tx_ring->tx_buffer_info[first].next_to_watch = i;
3733
3734 return count;
3735}
3736
3737static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003738 struct ixgbe_ring *tx_ring,
3739 int tx_flags, int count, u32 paylen, u8 hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07003740{
3741 union ixgbe_adv_tx_desc *tx_desc = NULL;
3742 struct ixgbe_tx_buffer *tx_buffer_info;
3743 u32 olinfo_status = 0, cmd_type_len = 0;
3744 unsigned int i;
3745 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
3746
3747 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
3748
3749 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
3750
3751 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
3752 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
3753
3754 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
3755 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
3756
3757 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003758 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07003759
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07003760 /* use index 1 context for tso */
3761 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07003762 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
3763 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003764 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07003765
3766 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
3767 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003768 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07003769
3770 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
3771
3772 i = tx_ring->next_to_use;
3773 while (count--) {
3774 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3775 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
3776 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
3777 tx_desc->read.cmd_type_len =
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003778 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
Auke Kok9a799d72007-09-15 14:07:45 -07003779 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Auke Kok9a799d72007-09-15 14:07:45 -07003780 i++;
3781 if (i == tx_ring->count)
3782 i = 0;
3783 }
3784
3785 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
3786
3787 /*
3788 * Force memory writes to complete before letting h/w
3789 * know there are new descriptors to fetch. (Only
3790 * applicable for weak-ordered memory model archs,
3791 * such as IA-64).
3792 */
3793 wmb();
3794
3795 tx_ring->next_to_use = i;
3796 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3797}
3798
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003799static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003800 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003801{
3802 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3803
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08003804 netif_stop_subqueue(netdev, tx_ring->queue_index);
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003805 /* Herbert's original patch had:
3806 * smp_mb__after_netif_stop_queue();
3807 * but since that doesn't exist yet, just open code it. */
3808 smp_mb();
3809
3810 /* We need to check again in a case another CPU has just
3811 * made room available. */
3812 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
3813 return -EBUSY;
3814
3815 /* A reprieve! - use start_queue because it doesn't call schedule */
Jesse Brandeburgaf721662008-09-11 19:54:23 -07003816 netif_start_subqueue(netdev, tx_ring->queue_index);
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003817 ++adapter->restart_queue;
3818 return 0;
3819}
3820
3821static int ixgbe_maybe_stop_tx(struct net_device *netdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003822 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003823{
3824 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
3825 return 0;
3826 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
3827}
3828
Auke Kok9a799d72007-09-15 14:07:45 -07003829static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3830{
3831 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3832 struct ixgbe_ring *tx_ring;
Auke Kok9a799d72007-09-15 14:07:45 -07003833 unsigned int first;
3834 unsigned int tx_flags = 0;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08003835 u8 hdr_len = 0;
3836 int r_idx = 0, tso;
Auke Kok9a799d72007-09-15 14:07:45 -07003837 int count = 0;
3838 unsigned int f;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003839
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08003840 r_idx = (adapter->num_tx_queues - 1) & skb->queue_mapping;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08003841 tx_ring = &adapter->tx_ring[r_idx];
Auke Kok9a799d72007-09-15 14:07:45 -07003842
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003843 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3844 tx_flags |= vlan_tx_tag_get(skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -08003845 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3846 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
3847 tx_flags |= (skb->queue_mapping << 13);
3848 }
3849 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
3850 tx_flags |= IXGBE_TX_FLAGS_VLAN;
3851 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3852 tx_flags |= (skb->queue_mapping << 13);
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003853 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
3854 tx_flags |= IXGBE_TX_FLAGS_VLAN;
Auke Kok9a799d72007-09-15 14:07:45 -07003855 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003856 /* three things can cause us to need a context descriptor */
3857 if (skb_is_gso(skb) ||
3858 (skb->ip_summed == CHECKSUM_PARTIAL) ||
3859 (tx_flags & IXGBE_TX_FLAGS_VLAN))
Auke Kok9a799d72007-09-15 14:07:45 -07003860 count++;
3861
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07003862 count += TXD_USE_COUNT(skb_headlen(skb));
3863 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
Auke Kok9a799d72007-09-15 14:07:45 -07003864 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
3865
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003866 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
Auke Kok9a799d72007-09-15 14:07:45 -07003867 adapter->tx_busy++;
Auke Kok9a799d72007-09-15 14:07:45 -07003868 return NETDEV_TX_BUSY;
3869 }
Auke Kok9a799d72007-09-15 14:07:45 -07003870
Al Viro8327d002007-12-10 18:54:12 +00003871 if (skb->protocol == htons(ETH_P_IP))
Auke Kok9a799d72007-09-15 14:07:45 -07003872 tx_flags |= IXGBE_TX_FLAGS_IPV4;
3873 first = tx_ring->next_to_use;
3874 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
3875 if (tso < 0) {
3876 dev_kfree_skb_any(skb);
3877 return NETDEV_TX_OK;
3878 }
3879
3880 if (tso)
3881 tx_flags |= IXGBE_TX_FLAGS_TSO;
3882 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003883 (skb->ip_summed == CHECKSUM_PARTIAL))
Auke Kok9a799d72007-09-15 14:07:45 -07003884 tx_flags |= IXGBE_TX_FLAGS_CSUM;
3885
3886 ixgbe_tx_queue(adapter, tx_ring, tx_flags,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003887 ixgbe_tx_map(adapter, tx_ring, skb, first),
3888 skb->len, hdr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07003889
3890 netdev->trans_start = jiffies;
3891
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08003892 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
Auke Kok9a799d72007-09-15 14:07:45 -07003893
3894 return NETDEV_TX_OK;
3895}
3896
3897/**
3898 * ixgbe_get_stats - Get System Network Statistics
3899 * @netdev: network interface device structure
3900 *
3901 * Returns the address of the device statistics structure.
3902 * The statistics are actually updated from the timer callback.
3903 **/
3904static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev)
3905{
3906 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3907
3908 /* only return the current stats */
3909 return &adapter->net_stats;
3910}
3911
3912/**
3913 * ixgbe_set_mac - Change the Ethernet Address of the NIC
3914 * @netdev: network interface device structure
3915 * @p: pointer to an address structure
3916 *
3917 * Returns 0 on success, negative on failure
3918 **/
3919static int ixgbe_set_mac(struct net_device *netdev, void *p)
3920{
3921 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003922 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003923 struct sockaddr *addr = p;
3924
3925 if (!is_valid_ether_addr(addr->sa_data))
3926 return -EADDRNOTAVAIL;
3927
3928 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003929 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07003930
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003931 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07003932
3933 return 0;
3934}
3935
3936#ifdef CONFIG_NET_POLL_CONTROLLER
3937/*
3938 * Polling 'interrupt' - used by things like netconsole to send skbs
3939 * without having to re-enable interrupts. It's not called while
3940 * the interrupt routine is executing.
3941 */
3942static void ixgbe_netpoll(struct net_device *netdev)
3943{
3944 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3945
3946 disable_irq(adapter->pdev->irq);
3947 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
3948 ixgbe_intr(adapter->pdev->irq, netdev);
3949 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
3950 enable_irq(adapter->pdev->irq);
3951}
3952#endif
3953
Stephen Hemminger0edc3522008-11-19 22:24:29 -08003954static const struct net_device_ops ixgbe_netdev_ops = {
3955 .ndo_open = ixgbe_open,
3956 .ndo_stop = ixgbe_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08003957 .ndo_start_xmit = ixgbe_xmit_frame,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08003958 .ndo_get_stats = ixgbe_get_stats,
3959 .ndo_set_multicast_list = ixgbe_set_rx_mode,
3960 .ndo_validate_addr = eth_validate_addr,
3961 .ndo_set_mac_address = ixgbe_set_mac,
3962 .ndo_change_mtu = ixgbe_change_mtu,
3963 .ndo_tx_timeout = ixgbe_tx_timeout,
3964 .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
3965 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
3966 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
3967#ifdef CONFIG_NET_POLL_CONTROLLER
3968 .ndo_poll_controller = ixgbe_netpoll,
3969#endif
3970};
3971
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003972/**
Auke Kok9a799d72007-09-15 14:07:45 -07003973 * ixgbe_probe - Device Initialization Routine
3974 * @pdev: PCI device information struct
3975 * @ent: entry in ixgbe_pci_tbl
3976 *
3977 * Returns 0 on success, negative on failure
3978 *
3979 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
3980 * The OS initialization, configuring of the adapter private structure,
3981 * and a hardware reset occur.
3982 **/
3983static int __devinit ixgbe_probe(struct pci_dev *pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07003984 const struct pci_device_id *ent)
Auke Kok9a799d72007-09-15 14:07:45 -07003985{
3986 struct net_device *netdev;
3987 struct ixgbe_adapter *adapter = NULL;
3988 struct ixgbe_hw *hw;
3989 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
Auke Kok9a799d72007-09-15 14:07:45 -07003990 static int cards_found;
3991 int i, err, pci_using_dac;
3992 u16 link_status, link_speed, link_width;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003993 u32 part_num, eec;
Auke Kok9a799d72007-09-15 14:07:45 -07003994
3995 err = pci_enable_device(pdev);
3996 if (err)
3997 return err;
3998
3999 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) &&
4000 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
4001 pci_using_dac = 1;
4002 } else {
4003 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4004 if (err) {
4005 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4006 if (err) {
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004007 dev_err(&pdev->dev, "No usable DMA "
4008 "configuration, aborting\n");
Auke Kok9a799d72007-09-15 14:07:45 -07004009 goto err_dma;
4010 }
4011 }
4012 pci_using_dac = 0;
4013 }
4014
4015 err = pci_request_regions(pdev, ixgbe_driver_name);
4016 if (err) {
4017 dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err);
4018 goto err_pci_reg;
4019 }
4020
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004021 err = pci_enable_pcie_error_reporting(pdev);
4022 if (err) {
4023 dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed "
4024 "0x%x\n", err);
4025 /* non-fatal, continue */
4026 }
4027
Auke Kok9a799d72007-09-15 14:07:45 -07004028 pci_set_master(pdev);
Wendy Xiongfb3b27b2008-04-23 11:09:24 -07004029 pci_save_state(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004030
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08004031 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES);
Auke Kok9a799d72007-09-15 14:07:45 -07004032 if (!netdev) {
4033 err = -ENOMEM;
4034 goto err_alloc_etherdev;
4035 }
4036
Auke Kok9a799d72007-09-15 14:07:45 -07004037 SET_NETDEV_DEV(netdev, &pdev->dev);
4038
4039 pci_set_drvdata(pdev, netdev);
4040 adapter = netdev_priv(netdev);
4041
4042 adapter->netdev = netdev;
4043 adapter->pdev = pdev;
4044 hw = &adapter->hw;
4045 hw->back = adapter;
4046 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
4047
Jeff Kirsher05857982008-09-11 19:57:00 -07004048 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
4049 pci_resource_len(pdev, 0));
Auke Kok9a799d72007-09-15 14:07:45 -07004050 if (!hw->hw_addr) {
4051 err = -EIO;
4052 goto err_ioremap;
4053 }
4054
4055 for (i = 1; i <= 5; i++) {
4056 if (pci_resource_len(pdev, i) == 0)
4057 continue;
4058 }
4059
Stephen Hemminger0edc3522008-11-19 22:24:29 -08004060 netdev->netdev_ops = &ixgbe_netdev_ops;
Auke Kok9a799d72007-09-15 14:07:45 -07004061 ixgbe_set_ethtool_ops(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004062 netdev->watchdog_timeo = 5 * HZ;
Auke Kok9a799d72007-09-15 14:07:45 -07004063 strcpy(netdev->name, pci_name(pdev));
4064
Auke Kok9a799d72007-09-15 14:07:45 -07004065 adapter->bd_number = cards_found;
4066
Auke Kok9a799d72007-09-15 14:07:45 -07004067 /* Setup hw api */
4068 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004069 hw->mac.type = ii->mac;
Auke Kok9a799d72007-09-15 14:07:45 -07004070
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004071 /* EEPROM */
4072 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
4073 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
4074 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
4075 if (!(eec & (1 << 8)))
4076 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
4077
4078 /* PHY */
4079 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
Donald Skidmorec4900be2008-11-20 21:11:42 -08004080 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
4081
4082 /* set up this timer and work struct before calling get_invariants
4083 * which might start the timer
4084 */
4085 init_timer(&adapter->sfp_timer);
4086 adapter->sfp_timer.function = &ixgbe_sfp_timer;
4087 adapter->sfp_timer.data = (unsigned long) adapter;
4088
4089 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004090
Auke Kok9a799d72007-09-15 14:07:45 -07004091 err = ii->get_invariants(hw);
Donald Skidmorec4900be2008-11-20 21:11:42 -08004092 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
4093 /* start a kernel thread to watch for a module to arrive */
4094 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4095 mod_timer(&adapter->sfp_timer,
4096 round_jiffies(jiffies + (2 * HZ)));
4097 err = 0;
4098 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
4099 DPRINTK(PROBE, ERR, "failed to load because an "
4100 "unsupported SFP+ module type was detected.\n");
Auke Kok9a799d72007-09-15 14:07:45 -07004101 goto err_hw_init;
Donald Skidmorec4900be2008-11-20 21:11:42 -08004102 } else if (err) {
4103 goto err_hw_init;
4104 }
Auke Kok9a799d72007-09-15 14:07:45 -07004105
4106 /* setup the private structure */
4107 err = ixgbe_sw_init(adapter);
4108 if (err)
4109 goto err_sw_init;
4110
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004111 /* reset_hw fills in the perm_addr as well */
4112 err = hw->mac.ops.reset_hw(hw);
4113 if (err) {
4114 dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err);
4115 goto err_sw_init;
4116 }
4117
Auke Kok9a799d72007-09-15 14:07:45 -07004118 netdev->features = NETIF_F_SG |
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004119 NETIF_F_IP_CSUM |
4120 NETIF_F_HW_VLAN_TX |
4121 NETIF_F_HW_VLAN_RX |
4122 NETIF_F_HW_VLAN_FILTER;
Auke Kok9a799d72007-09-15 14:07:45 -07004123
Jesse Brandeburge9990a92008-08-26 04:27:24 -07004124 netdev->features |= NETIF_F_IPV6_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07004125 netdev->features |= NETIF_F_TSO;
Auke Kok9a799d72007-09-15 14:07:45 -07004126 netdev->features |= NETIF_F_TSO6;
Herbert Xu78b6f4c2009-01-18 21:49:45 -08004127 netdev->features |= NETIF_F_GRO;
Jeff Kirsherad31c402008-06-05 04:05:30 -07004128
4129 netdev->vlan_features |= NETIF_F_TSO;
4130 netdev->vlan_features |= NETIF_F_TSO6;
Jesse Brandeburg22f32b7a52008-08-26 04:27:18 -07004131 netdev->vlan_features |= NETIF_F_IP_CSUM;
Jeff Kirsherad31c402008-06-05 04:05:30 -07004132 netdev->vlan_features |= NETIF_F_SG;
4133
Alexander Duyck2f90b862008-11-20 20:52:10 -08004134 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
4135 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
4136
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004137#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08004138 netdev->dcbnl_ops = &dcbnl_ops;
4139#endif
4140
Auke Kok9a799d72007-09-15 14:07:45 -07004141 if (pci_using_dac)
4142 netdev->features |= NETIF_F_HIGHDMA;
4143
Auke Kok9a799d72007-09-15 14:07:45 -07004144 /* make sure the EEPROM is good */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004145 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
Auke Kok9a799d72007-09-15 14:07:45 -07004146 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
4147 err = -EIO;
4148 goto err_eeprom;
4149 }
4150
4151 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
4152 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
4153
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004154 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
4155 dev_err(&pdev->dev, "invalid MAC address\n");
Auke Kok9a799d72007-09-15 14:07:45 -07004156 err = -EIO;
4157 goto err_eeprom;
4158 }
4159
4160 init_timer(&adapter->watchdog_timer);
4161 adapter->watchdog_timer.function = &ixgbe_watchdog;
4162 adapter->watchdog_timer.data = (unsigned long)adapter;
4163
4164 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07004165 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07004166
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004167 err = ixgbe_init_interrupt_scheme(adapter);
4168 if (err)
4169 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07004170
4171 /* print bus type/speed/width info */
4172 pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status);
4173 link_speed = link_status & IXGBE_PCI_LINK_SPEED;
4174 link_width = link_status & IXGBE_PCI_LINK_WIDTH;
Johannes Berg7c510e42008-10-27 17:47:26 -07004175 dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n",
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004176 ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" :
4177 (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" :
4178 "Unknown"),
4179 ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" :
4180 (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" :
4181 (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" :
4182 (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" :
4183 "Unknown"),
Johannes Berg7c510e42008-10-27 17:47:26 -07004184 netdev->dev_addr);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004185 ixgbe_read_pba_num_generic(hw, &part_num);
Auke Kok9a799d72007-09-15 14:07:45 -07004186 dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004187 hw->mac.type, hw->phy.type,
4188 (part_num >> 8), (part_num & 0xff));
Auke Kok9a799d72007-09-15 14:07:45 -07004189
Auke Kok0c254d82008-02-11 09:25:56 -08004190 if (link_width <= IXGBE_PCI_LINK_WIDTH_4) {
4191 dev_warn(&pdev->dev, "PCI-Express bandwidth available for "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004192 "this card is not sufficient for optimal "
4193 "performance.\n");
Auke Kok0c254d82008-02-11 09:25:56 -08004194 dev_warn(&pdev->dev, "For optimal performance a x8 "
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004195 "PCI-Express slot is required.\n");
Auke Kok0c254d82008-02-11 09:25:56 -08004196 }
4197
Peter P Waskiewicz Jr34b03682009-02-05 23:54:42 -08004198 /* save off EEPROM version number */
4199 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
4200
Auke Kok9a799d72007-09-15 14:07:45 -07004201 /* reset the hardware with the new settings */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004202 hw->mac.ops.start_hw(hw);
4203
Auke Kok9a799d72007-09-15 14:07:45 -07004204 netif_carrier_off(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004205
4206 strcpy(netdev->name, "eth%d");
4207 err = register_netdev(netdev);
4208 if (err)
4209 goto err_register;
4210
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004211#ifdef CONFIG_IXGBE_DCA
Denis V. Lunev652f0932008-03-27 14:39:17 +03004212 if (dca_add_requester(&pdev->dev) == 0) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004213 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
4214 /* always use CB2 mode, difference is masked
4215 * in the CB driver */
4216 IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2);
4217 ixgbe_setup_dca(adapter);
4218 }
4219#endif
Auke Kok9a799d72007-09-15 14:07:45 -07004220
4221 dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n");
4222 cards_found++;
4223 return 0;
4224
4225err_register:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08004226 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004227err_hw_init:
4228err_sw_init:
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004229 ixgbe_reset_interrupt_capability(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004230err_eeprom:
Donald Skidmorec4900be2008-11-20 21:11:42 -08004231 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4232 del_timer_sync(&adapter->sfp_timer);
4233 cancel_work_sync(&adapter->sfp_task);
Auke Kok9a799d72007-09-15 14:07:45 -07004234 iounmap(hw->hw_addr);
4235err_ioremap:
4236 free_netdev(netdev);
4237err_alloc_etherdev:
4238 pci_release_regions(pdev);
4239err_pci_reg:
4240err_dma:
4241 pci_disable_device(pdev);
4242 return err;
4243}
4244
4245/**
4246 * ixgbe_remove - Device Removal Routine
4247 * @pdev: PCI device information struct
4248 *
4249 * ixgbe_remove is called by the PCI subsystem to alert the driver
4250 * that it should release a PCI device. The could be caused by a
4251 * Hot-Plug event, or because the driver is going to be removed from
4252 * memory.
4253 **/
4254static void __devexit ixgbe_remove(struct pci_dev *pdev)
4255{
4256 struct net_device *netdev = pci_get_drvdata(pdev);
4257 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004258 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07004259
4260 set_bit(__IXGBE_DOWN, &adapter->state);
Donald Skidmorec4900be2008-11-20 21:11:42 -08004261 /* clear the module not found bit to make sure the worker won't
4262 * reschedule
4263 */
4264 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07004265 del_timer_sync(&adapter->watchdog_timer);
4266
Donald Skidmorec4900be2008-11-20 21:11:42 -08004267 del_timer_sync(&adapter->sfp_timer);
4268 cancel_work_sync(&adapter->watchdog_task);
4269 cancel_work_sync(&adapter->sfp_task);
Auke Kok9a799d72007-09-15 14:07:45 -07004270 flush_scheduled_work();
4271
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004272#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004273 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
4274 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
4275 dca_remove_requester(&pdev->dev);
4276 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
4277 }
4278
4279#endif
Donald Skidmorec4900be2008-11-20 21:11:42 -08004280 if (netdev->reg_state == NETREG_REGISTERED)
4281 unregister_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004282
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004283 ixgbe_reset_interrupt_capability(adapter);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08004284
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004285 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004286
4287 iounmap(adapter->hw.hw_addr);
4288 pci_release_regions(pdev);
4289
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004290 DPRINTK(PROBE, INFO, "complete\n");
4291 kfree(adapter->tx_ring);
4292 kfree(adapter->rx_ring);
4293
Auke Kok9a799d72007-09-15 14:07:45 -07004294 free_netdev(netdev);
4295
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004296 err = pci_disable_pcie_error_reporting(pdev);
4297 if (err)
4298 dev_err(&pdev->dev,
4299 "pci_disable_pcie_error_reporting failed 0x%x\n", err);
4300
Auke Kok9a799d72007-09-15 14:07:45 -07004301 pci_disable_device(pdev);
4302}
4303
4304/**
4305 * ixgbe_io_error_detected - called when PCI error is detected
4306 * @pdev: Pointer to PCI device
4307 * @state: The current pci connection state
4308 *
4309 * This function is called after a PCI bus error affecting
4310 * this device has been detected.
4311 */
4312static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004313 pci_channel_state_t state)
Auke Kok9a799d72007-09-15 14:07:45 -07004314{
4315 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08004316 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004317
4318 netif_device_detach(netdev);
4319
4320 if (netif_running(netdev))
4321 ixgbe_down(adapter);
4322 pci_disable_device(pdev);
4323
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004324 /* Request a slot reset. */
Auke Kok9a799d72007-09-15 14:07:45 -07004325 return PCI_ERS_RESULT_NEED_RESET;
4326}
4327
4328/**
4329 * ixgbe_io_slot_reset - called after the pci bus has been reset.
4330 * @pdev: Pointer to PCI device
4331 *
4332 * Restart the card from scratch, as if from a cold-boot.
4333 */
4334static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
4335{
4336 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08004337 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004338 pci_ers_result_t result;
4339 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07004340
4341 if (pci_enable_device(pdev)) {
4342 DPRINTK(PROBE, ERR,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004343 "Cannot re-enable PCI device after reset.\n");
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004344 result = PCI_ERS_RESULT_DISCONNECT;
4345 } else {
4346 pci_set_master(pdev);
4347 pci_restore_state(pdev);
4348
4349 pci_enable_wake(pdev, PCI_D3hot, 0);
4350 pci_enable_wake(pdev, PCI_D3cold, 0);
4351
4352 ixgbe_reset(adapter);
4353
4354 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9a799d72007-09-15 14:07:45 -07004355 }
Auke Kok9a799d72007-09-15 14:07:45 -07004356
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004357 err = pci_cleanup_aer_uncorrect_error_status(pdev);
4358 if (err) {
4359 dev_err(&pdev->dev,
4360 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err);
4361 /* non-fatal, continue */
4362 }
Auke Kok9a799d72007-09-15 14:07:45 -07004363
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08004364 return result;
Auke Kok9a799d72007-09-15 14:07:45 -07004365}
4366
4367/**
4368 * ixgbe_io_resume - called when traffic can start flowing again.
4369 * @pdev: Pointer to PCI device
4370 *
4371 * This callback is called when the error recovery driver tells us that
4372 * its OK to resume normal operation.
4373 */
4374static void ixgbe_io_resume(struct pci_dev *pdev)
4375{
4376 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08004377 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004378
4379 if (netif_running(netdev)) {
4380 if (ixgbe_up(adapter)) {
4381 DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n");
4382 return;
4383 }
4384 }
4385
4386 netif_device_attach(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07004387}
4388
4389static struct pci_error_handlers ixgbe_err_handler = {
4390 .error_detected = ixgbe_io_error_detected,
4391 .slot_reset = ixgbe_io_slot_reset,
4392 .resume = ixgbe_io_resume,
4393};
4394
4395static struct pci_driver ixgbe_driver = {
4396 .name = ixgbe_driver_name,
4397 .id_table = ixgbe_pci_tbl,
4398 .probe = ixgbe_probe,
4399 .remove = __devexit_p(ixgbe_remove),
4400#ifdef CONFIG_PM
4401 .suspend = ixgbe_suspend,
4402 .resume = ixgbe_resume,
4403#endif
4404 .shutdown = ixgbe_shutdown,
4405 .err_handler = &ixgbe_err_handler
4406};
4407
4408/**
4409 * ixgbe_init_module - Driver Registration Routine
4410 *
4411 * ixgbe_init_module is the first routine called when the driver is
4412 * loaded. All it does is register with the PCI subsystem.
4413 **/
4414static int __init ixgbe_init_module(void)
4415{
4416 int ret;
4417 printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name,
4418 ixgbe_driver_string, ixgbe_driver_version);
4419
4420 printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright);
4421
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004422#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004423 dca_register_notify(&dca_notifier);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004424#endif
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004425
Auke Kok9a799d72007-09-15 14:07:45 -07004426 ret = pci_register_driver(&ixgbe_driver);
4427 return ret;
4428}
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004429
Auke Kok9a799d72007-09-15 14:07:45 -07004430module_init(ixgbe_init_module);
4431
4432/**
4433 * ixgbe_exit_module - Driver Exit Cleanup Routine
4434 *
4435 * ixgbe_exit_module is called just before the driver is removed
4436 * from memory.
4437 **/
4438static void __exit ixgbe_exit_module(void)
4439{
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004440#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004441 dca_unregister_notify(&dca_notifier);
4442#endif
Auke Kok9a799d72007-09-15 14:07:45 -07004443 pci_unregister_driver(&ixgbe_driver);
4444}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004445
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004446#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004447static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004448 void *p)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004449{
4450 int ret_val;
4451
4452 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07004453 __ixgbe_notify_dca);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004454
4455 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
4456}
Jeff Garzik5dd2d332008-10-16 05:09:31 -04004457#endif /* CONFIG_IXGBE_DCA */
Jeb Cramerbd0362d2008-03-03 15:04:02 -08004458
Auke Kok9a799d72007-09-15 14:07:45 -07004459module_exit(ixgbe_exit_module);
4460
4461/* ixgbe_main.c */