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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
4 | Copyright(c) 1999 - 2007 Intel Corporation. | |
5 | ||
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: | |
23 | Linux NICS <linux.nics@intel.com> | |
24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/vmalloc.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/ip.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/ipv6.h> | |
39 | #include <net/checksum.h> | |
40 | #include <net/ip6_checksum.h> | |
41 | #include <linux/ethtool.h> | |
42 | #include <linux/if_vlan.h> | |
43 | ||
44 | #include "ixgbe.h" | |
45 | #include "ixgbe_common.h" | |
46 | ||
47 | char ixgbe_driver_name[] = "ixgbe"; | |
9c8eb720 SH |
48 | static const char ixgbe_driver_string[] = |
49 | "Intel(R) 10 Gigabit PCI Express Network Driver"; | |
9a799d71 | 50 | |
8d792cd9 | 51 | #define DRV_VERSION "1.3.18-k4" |
9c8eb720 SH |
52 | const char ixgbe_driver_version[] = DRV_VERSION; |
53 | static const char ixgbe_copyright[] = | |
54 | "Copyright (c) 1999-2007 Intel Corporation."; | |
9a799d71 AK |
55 | |
56 | static const struct ixgbe_info *ixgbe_info_tbl[] = { | |
3957d63d | 57 | [board_82598] = &ixgbe_82598_info, |
9a799d71 AK |
58 | }; |
59 | ||
60 | /* ixgbe_pci_tbl - PCI Device ID Table | |
61 | * | |
62 | * Wildcard entries (PCI_ANY_ID) should come last | |
63 | * Last entry must be all 0s | |
64 | * | |
65 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
66 | * Class, Class Mask, private data (not used) } | |
67 | */ | |
68 | static struct pci_device_id ixgbe_pci_tbl[] = { | |
69 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), | |
3957d63d | 70 | board_82598 }, |
9a799d71 | 71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), |
3957d63d | 72 | board_82598 }, |
9a799d71 | 73 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
3957d63d | 74 | board_82598 }, |
8d792cd9 JB |
75 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), |
76 | board_82598 }, | |
b95f5fcb JB |
77 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), |
78 | board_82598 }, | |
9a799d71 AK |
79 | |
80 | /* required last entry */ | |
81 | {0, } | |
82 | }; | |
83 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
84 | ||
a1f96ee7 | 85 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
86 | static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, |
87 | void *p); | |
88 | static struct notifier_block dca_notifier = { | |
89 | .notifier_call = ixgbe_notify_dca, | |
90 | .next = NULL, | |
91 | .priority = 0 | |
92 | }; | |
93 | #endif | |
94 | ||
9a799d71 AK |
95 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
96 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
97 | MODULE_LICENSE("GPL"); | |
98 | MODULE_VERSION(DRV_VERSION); | |
99 | ||
100 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
101 | ||
5eba3699 AV |
102 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
103 | { | |
104 | u32 ctrl_ext; | |
105 | ||
106 | /* Let firmware take over control of h/w */ | |
107 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
108 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
109 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); | |
110 | } | |
111 | ||
112 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) | |
113 | { | |
114 | u32 ctrl_ext; | |
115 | ||
116 | /* Let firmware know the driver has taken over */ | |
117 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
118 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
119 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); | |
120 | } | |
9a799d71 AK |
121 | |
122 | #ifdef DEBUG | |
123 | /** | |
124 | * ixgbe_get_hw_dev_name - return device name string | |
125 | * used by hardware layer to print debugging information | |
126 | **/ | |
127 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) | |
128 | { | |
129 | struct ixgbe_adapter *adapter = hw->back; | |
130 | struct net_device *netdev = adapter->netdev; | |
131 | return netdev->name; | |
132 | } | |
133 | #endif | |
134 | ||
135 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry, | |
136 | u8 msix_vector) | |
137 | { | |
138 | u32 ivar, index; | |
139 | ||
140 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
141 | index = (int_alloc_entry >> 2) & 0x1F; | |
142 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index)); | |
143 | ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3))); | |
144 | ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3))); | |
145 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar); | |
146 | } | |
147 | ||
148 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
149 | struct ixgbe_tx_buffer | |
150 | *tx_buffer_info) | |
151 | { | |
152 | if (tx_buffer_info->dma) { | |
e01c31a5 | 153 | pci_unmap_page(adapter->pdev, tx_buffer_info->dma, |
9a799d71 AK |
154 | tx_buffer_info->length, PCI_DMA_TODEVICE); |
155 | tx_buffer_info->dma = 0; | |
156 | } | |
157 | if (tx_buffer_info->skb) { | |
158 | dev_kfree_skb_any(tx_buffer_info->skb); | |
159 | tx_buffer_info->skb = NULL; | |
160 | } | |
161 | /* tx_buffer_info must be completely set up in the transmit path */ | |
162 | } | |
163 | ||
164 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
165 | struct ixgbe_ring *tx_ring, | |
e01c31a5 | 166 | unsigned int eop) |
9a799d71 | 167 | { |
e01c31a5 JB |
168 | struct ixgbe_hw *hw = &adapter->hw; |
169 | u32 head, tail; | |
170 | ||
9a799d71 | 171 | /* Detect a transmit hang in hardware, this serializes the |
e01c31a5 JB |
172 | * check with the clearing of time_stamp and movement of eop */ |
173 | head = IXGBE_READ_REG(hw, tx_ring->head); | |
174 | tail = IXGBE_READ_REG(hw, tx_ring->tail); | |
9a799d71 | 175 | adapter->detect_tx_hung = false; |
e01c31a5 JB |
176 | if ((head != tail) && |
177 | tx_ring->tx_buffer_info[eop].time_stamp && | |
9a799d71 AK |
178 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && |
179 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
180 | /* detected Tx unit hang */ | |
e01c31a5 JB |
181 | union ixgbe_adv_tx_desc *tx_desc; |
182 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
9a799d71 | 183 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
e01c31a5 JB |
184 | " Tx Queue <%d>\n" |
185 | " TDH, TDT <%x>, <%x>\n" | |
9a799d71 AK |
186 | " next_to_use <%x>\n" |
187 | " next_to_clean <%x>\n" | |
188 | "tx_buffer_info[next_to_clean]\n" | |
189 | " time_stamp <%lx>\n" | |
e01c31a5 JB |
190 | " jiffies <%lx>\n", |
191 | tx_ring->queue_index, | |
192 | head, tail, | |
193 | tx_ring->next_to_use, eop, | |
194 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); | |
9a799d71 AK |
195 | return true; |
196 | } | |
197 | ||
198 | return false; | |
199 | } | |
200 | ||
e092be60 AV |
201 | #define IXGBE_MAX_TXD_PWR 14 |
202 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
203 | ||
204 | /* Tx Descriptors needed, worst case */ | |
205 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
206 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
207 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
208 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
209 | ||
e01c31a5 JB |
210 | #define GET_TX_HEAD_FROM_RING(ring) (\ |
211 | *(volatile u32 *) \ | |
212 | ((union ixgbe_adv_tx_desc *)(ring)->desc + (ring)->count)) | |
213 | static void ixgbe_tx_timeout(struct net_device *netdev); | |
214 | ||
9a799d71 AK |
215 | /** |
216 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
217 | * @adapter: board private structure | |
e01c31a5 | 218 | * @tx_ring: tx ring to clean |
9a799d71 AK |
219 | **/ |
220 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
e01c31a5 | 221 | struct ixgbe_ring *tx_ring) |
9a799d71 | 222 | { |
e01c31a5 | 223 | union ixgbe_adv_tx_desc *tx_desc; |
9a799d71 | 224 | struct ixgbe_tx_buffer *tx_buffer_info; |
e01c31a5 JB |
225 | struct net_device *netdev = adapter->netdev; |
226 | struct sk_buff *skb; | |
227 | unsigned int i; | |
228 | u32 head, oldhead; | |
229 | unsigned int count = 0; | |
230 | unsigned int total_bytes = 0, total_packets = 0; | |
9a799d71 | 231 | |
e01c31a5 JB |
232 | rmb(); |
233 | head = GET_TX_HEAD_FROM_RING(tx_ring); | |
234 | head = le32_to_cpu(head); | |
9a799d71 | 235 | i = tx_ring->next_to_clean; |
e01c31a5 JB |
236 | while (1) { |
237 | while (i != head) { | |
9a799d71 AK |
238 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
239 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
e01c31a5 | 240 | skb = tx_buffer_info->skb; |
9a799d71 | 241 | |
e01c31a5 | 242 | if (skb) { |
e092be60 | 243 | unsigned int segs, bytecount; |
e01c31a5 JB |
244 | |
245 | /* gso_segs is currently only valid for tcp */ | |
e092be60 AV |
246 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
247 | /* multiply data chunks by size of headers */ | |
248 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
e01c31a5 JB |
249 | skb->len; |
250 | total_packets += segs; | |
251 | total_bytes += bytecount; | |
e092be60 | 252 | } |
e01c31a5 | 253 | |
9a799d71 | 254 | ixgbe_unmap_and_free_tx_resource(adapter, |
e01c31a5 | 255 | tx_buffer_info); |
9a799d71 AK |
256 | |
257 | i++; | |
258 | if (i == tx_ring->count) | |
259 | i = 0; | |
9a799d71 | 260 | |
e01c31a5 JB |
261 | count++; |
262 | if (count == tx_ring->count) | |
263 | goto done_cleaning; | |
264 | } | |
265 | oldhead = head; | |
266 | rmb(); | |
267 | head = GET_TX_HEAD_FROM_RING(tx_ring); | |
268 | head = le32_to_cpu(head); | |
269 | if (head == oldhead) | |
270 | goto done_cleaning; | |
271 | } /* while (1) */ | |
272 | ||
273 | done_cleaning: | |
9a799d71 AK |
274 | tx_ring->next_to_clean = i; |
275 | ||
e092be60 | 276 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
e01c31a5 JB |
277 | if (unlikely(count && netif_carrier_ok(netdev) && |
278 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { | |
e092be60 AV |
279 | /* Make sure that anybody stopping the queue after this |
280 | * sees the new next_to_clean. | |
281 | */ | |
282 | smp_mb(); | |
30eba97a AV |
283 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
284 | !test_bit(__IXGBE_DOWN, &adapter->state)) { | |
285 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
e01c31a5 | 286 | ++adapter->restart_queue; |
30eba97a | 287 | } |
e092be60 | 288 | } |
9a799d71 | 289 | |
e01c31a5 JB |
290 | if (adapter->detect_tx_hung) { |
291 | if (ixgbe_check_tx_hang(adapter, tx_ring, i)) { | |
292 | /* schedule immediate reset if we believe we hung */ | |
293 | DPRINTK(PROBE, INFO, | |
294 | "tx hang %d detected, resetting adapter\n", | |
295 | adapter->tx_timeout_count + 1); | |
296 | ixgbe_tx_timeout(adapter->netdev); | |
297 | } | |
298 | } | |
9a799d71 | 299 | |
e01c31a5 JB |
300 | /* re-arm the interrupt */ |
301 | if ((total_packets >= tx_ring->work_limit) || | |
302 | (count == tx_ring->count)) | |
303 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->v_idx); | |
9a799d71 | 304 | |
e01c31a5 JB |
305 | tx_ring->total_bytes += total_bytes; |
306 | tx_ring->total_packets += total_packets; | |
307 | tx_ring->stats.bytes += total_bytes; | |
308 | tx_ring->stats.packets += total_packets; | |
309 | adapter->net_stats.tx_bytes += total_bytes; | |
310 | adapter->net_stats.tx_packets += total_packets; | |
311 | return (total_packets ? true : false); | |
9a799d71 AK |
312 | } |
313 | ||
a1f96ee7 | 314 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd | 315 | static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, |
3a581073 | 316 | struct ixgbe_ring *rx_ring) |
bd0362dd JC |
317 | { |
318 | u32 rxctrl; | |
319 | int cpu = get_cpu(); | |
3a581073 | 320 | int q = rx_ring - adapter->rx_ring; |
bd0362dd | 321 | |
3a581073 | 322 | if (rx_ring->cpu != cpu) { |
bd0362dd JC |
323 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q)); |
324 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK; | |
96b0e0f6 | 325 | rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
bd0362dd JC |
326 | rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN; |
327 | rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN; | |
328 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl); | |
3a581073 | 329 | rx_ring->cpu = cpu; |
bd0362dd JC |
330 | } |
331 | put_cpu(); | |
332 | } | |
333 | ||
334 | static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, | |
3a581073 | 335 | struct ixgbe_ring *tx_ring) |
bd0362dd JC |
336 | { |
337 | u32 txctrl; | |
338 | int cpu = get_cpu(); | |
3a581073 | 339 | int q = tx_ring - adapter->tx_ring; |
bd0362dd | 340 | |
3a581073 | 341 | if (tx_ring->cpu != cpu) { |
bd0362dd JC |
342 | txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q)); |
343 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; | |
96b0e0f6 | 344 | txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
bd0362dd JC |
345 | txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; |
346 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl); | |
3a581073 | 347 | tx_ring->cpu = cpu; |
bd0362dd JC |
348 | } |
349 | put_cpu(); | |
350 | } | |
351 | ||
352 | static 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 | ||
369 | static 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: | |
96b0e0f6 JB |
377 | /* if we're already enabled, don't do it again */ |
378 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) | |
379 | break; | |
bd0362dd JC |
380 | /* Always use CB2 mode, difference is masked |
381 | * in the CB driver. */ | |
382 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2); | |
652f093f | 383 | if (dca_add_requester(dev) == 0) { |
96b0e0f6 | 384 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
bd0362dd JC |
385 | 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 | ||
652f093f | 398 | return 0; |
bd0362dd JC |
399 | } |
400 | ||
96b0e0f6 | 401 | #endif /* CONFIG_DCA or CONFIG_DCA_MODULE */ |
9a799d71 AK |
402 | /** |
403 | * ixgbe_receive_skb - Send a completed packet up the stack | |
404 | * @adapter: board private structure | |
405 | * @skb: packet to send up | |
177db6ff MC |
406 | * @status: hardware indication of status of receive |
407 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
408 | * @rx_desc: rx descriptor | |
9a799d71 AK |
409 | **/ |
410 | static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, | |
177db6ff MC |
411 | struct sk_buff *skb, u8 status, |
412 | struct ixgbe_ring *ring, | |
413 | union ixgbe_adv_rx_desc *rx_desc) | |
9a799d71 | 414 | { |
177db6ff MC |
415 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); |
416 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
9a799d71 | 417 | |
177db6ff MC |
418 | if (adapter->netdev->features & NETIF_F_LRO && |
419 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
9a799d71 | 420 | if (adapter->vlgrp && is_vlan) |
177db6ff MC |
421 | lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb, |
422 | adapter->vlgrp, tag, | |
423 | rx_desc); | |
9a799d71 | 424 | else |
177db6ff MC |
425 | lro_receive_skb(&ring->lro_mgr, skb, rx_desc); |
426 | ring->lro_used = true; | |
427 | } else { | |
428 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
429 | if (adapter->vlgrp && is_vlan) | |
430 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); | |
431 | else | |
432 | netif_receive_skb(skb); | |
433 | } else { | |
434 | if (adapter->vlgrp && is_vlan) | |
435 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
436 | else | |
437 | netif_rx(skb); | |
438 | } | |
9a799d71 AK |
439 | } |
440 | } | |
441 | ||
e59bd25d AV |
442 | /** |
443 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum | |
444 | * @adapter: address of board private structure | |
445 | * @status_err: hardware indication of status of receive | |
446 | * @skb: skb currently being received and modified | |
447 | **/ | |
9a799d71 | 448 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
712744be | 449 | u32 status_err, struct sk_buff *skb) |
9a799d71 AK |
450 | { |
451 | skb->ip_summed = CHECKSUM_NONE; | |
452 | ||
712744be JB |
453 | /* Rx csum disabled */ |
454 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
9a799d71 | 455 | return; |
e59bd25d AV |
456 | |
457 | /* if IP and error */ | |
458 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
459 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
9a799d71 AK |
460 | adapter->hw_csum_rx_error++; |
461 | return; | |
462 | } | |
e59bd25d AV |
463 | |
464 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
465 | return; | |
466 | ||
467 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
468 | adapter->hw_csum_rx_error++; | |
469 | return; | |
470 | } | |
471 | ||
9a799d71 | 472 | /* It must be a TCP or UDP packet with a valid checksum */ |
e59bd25d | 473 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9a799d71 AK |
474 | adapter->hw_csum_rx_good++; |
475 | } | |
476 | ||
477 | /** | |
478 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
479 | * @adapter: address of board private structure | |
480 | **/ | |
481 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
7c6e0a43 JB |
482 | struct ixgbe_ring *rx_ring, |
483 | int cleaned_count) | |
9a799d71 AK |
484 | { |
485 | struct net_device *netdev = adapter->netdev; | |
486 | struct pci_dev *pdev = adapter->pdev; | |
487 | union ixgbe_adv_rx_desc *rx_desc; | |
3a581073 | 488 | struct ixgbe_rx_buffer *bi; |
9a799d71 | 489 | unsigned int i; |
7c6e0a43 | 490 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; |
9a799d71 AK |
491 | |
492 | i = rx_ring->next_to_use; | |
3a581073 | 493 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 AK |
494 | |
495 | while (cleaned_count--) { | |
496 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
497 | ||
762f4c57 | 498 | if (!bi->page_dma && |
3a581073 | 499 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { |
3a581073 | 500 | if (!bi->page) { |
762f4c57 JB |
501 | bi->page = alloc_page(GFP_ATOMIC); |
502 | if (!bi->page) { | |
503 | adapter->alloc_rx_page_failed++; | |
504 | goto no_buffers; | |
505 | } | |
506 | bi->page_offset = 0; | |
507 | } else { | |
508 | /* use a half page if we're re-using */ | |
509 | bi->page_offset ^= (PAGE_SIZE / 2); | |
9a799d71 | 510 | } |
762f4c57 JB |
511 | |
512 | bi->page_dma = pci_map_page(pdev, bi->page, | |
513 | bi->page_offset, | |
514 | (PAGE_SIZE / 2), | |
515 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
516 | } |
517 | ||
3a581073 JB |
518 | if (!bi->skb) { |
519 | struct sk_buff *skb = netdev_alloc_skb(netdev, bufsz); | |
9a799d71 AK |
520 | |
521 | if (!skb) { | |
522 | adapter->alloc_rx_buff_failed++; | |
523 | goto no_buffers; | |
524 | } | |
525 | ||
526 | /* | |
527 | * Make buffer alignment 2 beyond a 16 byte boundary | |
528 | * this will result in a 16 byte aligned IP header after | |
529 | * the 14 byte MAC header is removed | |
530 | */ | |
531 | skb_reserve(skb, NET_IP_ALIGN); | |
532 | ||
3a581073 JB |
533 | bi->skb = skb; |
534 | bi->dma = pci_map_single(pdev, skb->data, bufsz, | |
535 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
536 | } |
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) { | |
3a581073 JB |
540 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); |
541 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); | |
9a799d71 | 542 | } else { |
3a581073 | 543 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); |
9a799d71 AK |
544 | } |
545 | ||
546 | i++; | |
547 | if (i == rx_ring->count) | |
548 | i = 0; | |
3a581073 | 549 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 | 550 | } |
7c6e0a43 | 551 | |
9a799d71 AK |
552 | no_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 | ||
7c6e0a43 JB |
569 | static 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 | ||
574 | static 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 | ||
9a799d71 | 579 | static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter, |
7c6e0a43 JB |
580 | struct ixgbe_ring *rx_ring, |
581 | int *work_done, int work_to_do) | |
9a799d71 AK |
582 | { |
583 | struct net_device *netdev = adapter->netdev; | |
584 | 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; | |
7c6e0a43 | 589 | u32 len, staterr; |
177db6ff MC |
590 | u16 hdr_info; |
591 | bool cleaned = false; | |
9a799d71 | 592 | int cleaned_count = 0; |
d2f4fbe2 | 593 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
9a799d71 AK |
594 | |
595 | i = rx_ring->next_to_clean; | |
9a799d71 AK |
596 | 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]; | |
9a799d71 AK |
599 | |
600 | while (staterr & IXGBE_RXD_STAT_DD) { | |
7c6e0a43 | 601 | u32 upper_len = 0; |
9a799d71 AK |
602 | if (*work_done >= work_to_do) |
603 | break; | |
604 | (*work_done)++; | |
605 | ||
606 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 JB |
607 | hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc)); |
608 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
762f4c57 | 609 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; |
9a799d71 AK |
610 | 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); | |
7c6e0a43 | 615 | } else { |
9a799d71 | 616 | len = le16_to_cpu(rx_desc->wb.upper.length); |
7c6e0a43 | 617 | } |
9a799d71 AK |
618 | |
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, | |
7c6e0a43 JB |
626 | rx_ring->rx_buf_len + NET_IP_ALIGN, |
627 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
628 | skb_put(skb, len); |
629 | } | |
630 | ||
631 | if (upper_len) { | |
632 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
762f4c57 | 633 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
9a799d71 AK |
634 | rx_buffer_info->page_dma = 0; |
635 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
762f4c57 JB |
636 | 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); | |
9a799d71 AK |
645 | |
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; | |
762f4c57 | 667 | next_buffer->dma = 0; |
9a799d71 AK |
668 | 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); | |
d2f4fbe2 AV |
678 | |
679 | /* probably a little skewed due to removing CRC */ | |
680 | total_rx_bytes += skb->len; | |
681 | total_rx_packets++; | |
682 | ||
9a799d71 | 683 | skb->protocol = eth_type_trans(skb, netdev); |
177db6ff | 684 | ixgbe_receive_skb(adapter, skb, staterr, rx_ring, rx_desc); |
9a799d71 AK |
685 | netdev->last_rx = jiffies; |
686 | ||
687 | next_desc: | |
688 | rx_desc->wb.upper.status_error = 0; | |
689 | ||
690 | /* return some buffers to hardware, one at a time is too slow */ | |
691 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
692 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
693 | cleaned_count = 0; | |
694 | } | |
695 | ||
696 | /* use prefetched values */ | |
697 | rx_desc = next_rxd; | |
698 | rx_buffer_info = next_buffer; | |
699 | ||
700 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
177db6ff MC |
701 | } |
702 | ||
703 | if (rx_ring->lro_used) { | |
704 | lro_flush_all(&rx_ring->lro_mgr); | |
705 | rx_ring->lro_used = false; | |
9a799d71 AK |
706 | } |
707 | ||
708 | rx_ring->next_to_clean = i; | |
709 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
710 | ||
711 | if (cleaned_count) | |
712 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
713 | ||
f494e8fa AV |
714 | rx_ring->total_packets += total_rx_packets; |
715 | rx_ring->total_bytes += total_rx_bytes; | |
716 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
717 | adapter->net_stats.rx_packets += total_rx_packets; | |
718 | ||
9a799d71 AK |
719 | return cleaned; |
720 | } | |
721 | ||
021230d4 | 722 | static int ixgbe_clean_rxonly(struct napi_struct *, int); |
9a799d71 AK |
723 | /** |
724 | * ixgbe_configure_msix - Configure MSI-X hardware | |
725 | * @adapter: board private structure | |
726 | * | |
727 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
728 | * interrupts. | |
729 | **/ | |
730 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
731 | { | |
021230d4 AV |
732 | struct ixgbe_q_vector *q_vector; |
733 | int i, j, q_vectors, v_idx, r_idx; | |
734 | u32 mask; | |
9a799d71 | 735 | |
021230d4 | 736 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
9a799d71 | 737 | |
021230d4 AV |
738 | /* Populate the IVAR table and set the ITR values to the |
739 | * corresponding register. | |
740 | */ | |
741 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
742 | q_vector = &adapter->q_vector[v_idx]; | |
743 | /* XXX for_each_bit(...) */ | |
744 | r_idx = find_first_bit(q_vector->rxr_idx, | |
745 | adapter->num_rx_queues); | |
746 | ||
747 | for (i = 0; i < q_vector->rxr_count; i++) { | |
748 | j = adapter->rx_ring[r_idx].reg_idx; | |
749 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(j), v_idx); | |
750 | r_idx = find_next_bit(q_vector->rxr_idx, | |
751 | adapter->num_rx_queues, | |
752 | r_idx + 1); | |
753 | } | |
754 | r_idx = find_first_bit(q_vector->txr_idx, | |
755 | adapter->num_tx_queues); | |
756 | ||
757 | for (i = 0; i < q_vector->txr_count; i++) { | |
758 | j = adapter->tx_ring[r_idx].reg_idx; | |
759 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(j), v_idx); | |
760 | r_idx = find_next_bit(q_vector->txr_idx, | |
761 | adapter->num_tx_queues, | |
762 | r_idx + 1); | |
763 | } | |
764 | ||
30efa5a3 | 765 | /* if this is a tx only vector halve the interrupt rate */ |
021230d4 | 766 | if (q_vector->txr_count && !q_vector->rxr_count) |
30efa5a3 | 767 | q_vector->eitr = (adapter->eitr_param >> 1); |
021230d4 | 768 | else |
30efa5a3 JB |
769 | /* rx only */ |
770 | q_vector->eitr = adapter->eitr_param; | |
021230d4 AV |
771 | |
772 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), | |
773 | EITR_INTS_PER_SEC_TO_REG(q_vector->eitr)); | |
9a799d71 AK |
774 | } |
775 | ||
021230d4 AV |
776 | ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, v_idx); |
777 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); | |
778 | ||
41fb9248 | 779 | /* set up to autoclear timer, and the vectors */ |
021230d4 | 780 | mask = IXGBE_EIMS_ENABLE_MASK; |
41fb9248 | 781 | mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); |
021230d4 | 782 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); |
9a799d71 AK |
783 | } |
784 | ||
f494e8fa AV |
785 | enum latency_range { |
786 | lowest_latency = 0, | |
787 | low_latency = 1, | |
788 | bulk_latency = 2, | |
789 | latency_invalid = 255 | |
790 | }; | |
791 | ||
792 | /** | |
793 | * ixgbe_update_itr - update the dynamic ITR value based on statistics | |
794 | * @adapter: pointer to adapter | |
795 | * @eitr: eitr setting (ints per sec) to give last timeslice | |
796 | * @itr_setting: current throttle rate in ints/second | |
797 | * @packets: the number of packets during this measurement interval | |
798 | * @bytes: the number of bytes during this measurement interval | |
799 | * | |
800 | * Stores a new ITR value based on packets and byte | |
801 | * counts during the last interrupt. The advantage of per interrupt | |
802 | * computation is faster updates and more accurate ITR for the current | |
803 | * traffic pattern. Constants in this function were computed | |
804 | * based on theoretical maximum wire speed and thresholds were set based | |
805 | * on testing data as well as attempting to minimize response time | |
806 | * while increasing bulk throughput. | |
807 | * this functionality is controlled by the InterruptThrottleRate module | |
808 | * parameter (see ixgbe_param.c) | |
809 | **/ | |
810 | static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter, | |
811 | u32 eitr, u8 itr_setting, | |
812 | int packets, int bytes) | |
813 | { | |
814 | unsigned int retval = itr_setting; | |
815 | u32 timepassed_us; | |
816 | u64 bytes_perint; | |
817 | ||
818 | if (packets == 0) | |
819 | goto update_itr_done; | |
820 | ||
821 | ||
822 | /* simple throttlerate management | |
823 | * 0-20MB/s lowest (100000 ints/s) | |
824 | * 20-100MB/s low (20000 ints/s) | |
825 | * 100-1249MB/s bulk (8000 ints/s) | |
826 | */ | |
827 | /* what was last interrupt timeslice? */ | |
828 | timepassed_us = 1000000/eitr; | |
829 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ | |
830 | ||
831 | switch (itr_setting) { | |
832 | case lowest_latency: | |
833 | if (bytes_perint > adapter->eitr_low) | |
834 | retval = low_latency; | |
835 | break; | |
836 | case low_latency: | |
837 | if (bytes_perint > adapter->eitr_high) | |
838 | retval = bulk_latency; | |
839 | else if (bytes_perint <= adapter->eitr_low) | |
840 | retval = lowest_latency; | |
841 | break; | |
842 | case bulk_latency: | |
843 | if (bytes_perint <= adapter->eitr_high) | |
844 | retval = low_latency; | |
845 | break; | |
846 | } | |
847 | ||
848 | update_itr_done: | |
849 | return retval; | |
850 | } | |
851 | ||
852 | static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector) | |
853 | { | |
854 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
855 | struct ixgbe_hw *hw = &adapter->hw; | |
856 | u32 new_itr; | |
857 | u8 current_itr, ret_itr; | |
858 | int i, r_idx, v_idx = ((void *)q_vector - (void *)(adapter->q_vector)) / | |
859 | sizeof(struct ixgbe_q_vector); | |
860 | struct ixgbe_ring *rx_ring, *tx_ring; | |
861 | ||
862 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
863 | for (i = 0; i < q_vector->txr_count; i++) { | |
864 | tx_ring = &(adapter->tx_ring[r_idx]); | |
865 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
30efa5a3 | 866 | q_vector->tx_itr, |
f494e8fa AV |
867 | tx_ring->total_packets, |
868 | tx_ring->total_bytes); | |
869 | /* if the result for this queue would decrease interrupt | |
870 | * rate for this vector then use that result */ | |
30efa5a3 JB |
871 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? |
872 | q_vector->tx_itr - 1 : ret_itr); | |
f494e8fa AV |
873 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
874 | r_idx + 1); | |
875 | } | |
876 | ||
877 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
878 | for (i = 0; i < q_vector->rxr_count; i++) { | |
879 | rx_ring = &(adapter->rx_ring[r_idx]); | |
880 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
30efa5a3 | 881 | q_vector->rx_itr, |
f494e8fa AV |
882 | rx_ring->total_packets, |
883 | rx_ring->total_bytes); | |
884 | /* if the result for this queue would decrease interrupt | |
885 | * rate for this vector then use that result */ | |
30efa5a3 JB |
886 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? |
887 | q_vector->rx_itr - 1 : ret_itr); | |
f494e8fa AV |
888 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
889 | r_idx + 1); | |
890 | } | |
891 | ||
30efa5a3 | 892 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
893 | |
894 | switch (current_itr) { | |
895 | /* counts and packets in update_itr are dependent on these numbers */ | |
896 | case lowest_latency: | |
897 | new_itr = 100000; | |
898 | break; | |
899 | case low_latency: | |
900 | new_itr = 20000; /* aka hwitr = ~200 */ | |
901 | break; | |
902 | case bulk_latency: | |
903 | default: | |
904 | new_itr = 8000; | |
905 | break; | |
906 | } | |
907 | ||
908 | if (new_itr != q_vector->eitr) { | |
909 | u32 itr_reg; | |
910 | /* do an exponential smoothing */ | |
911 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
912 | q_vector->eitr = new_itr; | |
913 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
914 | /* must write high and low 16 bits to reset counter */ | |
915 | DPRINTK(TX_ERR, DEBUG, "writing eitr(%d): %08X\n", v_idx, | |
916 | itr_reg); | |
917 | IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg | (itr_reg)<<16); | |
918 | } | |
919 | ||
920 | return; | |
921 | } | |
922 | ||
cf8280ee JB |
923 | |
924 | static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) | |
925 | { | |
926 | struct ixgbe_hw *hw = &adapter->hw; | |
927 | ||
928 | adapter->lsc_int++; | |
929 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
930 | adapter->link_check_timeout = jiffies; | |
931 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
932 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); | |
933 | schedule_work(&adapter->watchdog_task); | |
934 | } | |
935 | } | |
936 | ||
9a799d71 AK |
937 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) |
938 | { | |
939 | struct net_device *netdev = data; | |
940 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
941 | struct ixgbe_hw *hw = &adapter->hw; | |
942 | u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
943 | ||
cf8280ee JB |
944 | if (eicr & IXGBE_EICR_LSC) |
945 | ixgbe_check_lsc(adapter); | |
d4f80882 AV |
946 | |
947 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
948 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
9a799d71 AK |
949 | |
950 | return IRQ_HANDLED; | |
951 | } | |
952 | ||
953 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
954 | { | |
021230d4 AV |
955 | struct ixgbe_q_vector *q_vector = data; |
956 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 957 | struct ixgbe_ring *tx_ring; |
021230d4 AV |
958 | int i, r_idx; |
959 | ||
960 | if (!q_vector->txr_count) | |
961 | return IRQ_HANDLED; | |
962 | ||
963 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
964 | for (i = 0; i < q_vector->txr_count; i++) { | |
3a581073 | 965 | tx_ring = &(adapter->tx_ring[r_idx]); |
a1f96ee7 | 966 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd | 967 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 968 | ixgbe_update_tx_dca(adapter, tx_ring); |
bd0362dd | 969 | #endif |
3a581073 JB |
970 | tx_ring->total_bytes = 0; |
971 | tx_ring->total_packets = 0; | |
972 | ixgbe_clean_tx_irq(adapter, tx_ring); | |
021230d4 AV |
973 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
974 | r_idx + 1); | |
975 | } | |
9a799d71 | 976 | |
9a799d71 AK |
977 | return IRQ_HANDLED; |
978 | } | |
979 | ||
021230d4 AV |
980 | /** |
981 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) | |
982 | * @irq: unused | |
983 | * @data: pointer to our q_vector struct for this interrupt vector | |
984 | **/ | |
9a799d71 AK |
985 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) |
986 | { | |
021230d4 AV |
987 | struct ixgbe_q_vector *q_vector = data; |
988 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 989 | struct ixgbe_ring *rx_ring; |
021230d4 | 990 | int r_idx; |
30efa5a3 | 991 | int i; |
021230d4 AV |
992 | |
993 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
30efa5a3 JB |
994 | for (i = 0; i < q_vector->rxr_count; i++) { |
995 | rx_ring = &(adapter->rx_ring[r_idx]); | |
996 | rx_ring->total_bytes = 0; | |
997 | rx_ring->total_packets = 0; | |
998 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
999 | r_idx + 1); | |
1000 | } | |
1001 | ||
021230d4 AV |
1002 | if (!q_vector->rxr_count) |
1003 | return IRQ_HANDLED; | |
1004 | ||
30efa5a3 | 1005 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 1006 | rx_ring = &(adapter->rx_ring[r_idx]); |
021230d4 | 1007 | /* disable interrupts on this vector only */ |
3a581073 | 1008 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rx_ring->v_idx); |
021230d4 AV |
1009 | netif_rx_schedule(adapter->netdev, &q_vector->napi); |
1010 | ||
1011 | return IRQ_HANDLED; | |
1012 | } | |
1013 | ||
1014 | static irqreturn_t ixgbe_msix_clean_many(int irq, void *data) | |
1015 | { | |
1016 | ixgbe_msix_clean_rx(irq, data); | |
1017 | ixgbe_msix_clean_tx(irq, data); | |
9a799d71 | 1018 | |
9a799d71 AK |
1019 | return IRQ_HANDLED; |
1020 | } | |
1021 | ||
021230d4 AV |
1022 | /** |
1023 | * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine | |
1024 | * @napi: napi struct with our devices info in it | |
1025 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1026 | * | |
f0848276 JB |
1027 | * This function is optimized for cleaning one queue only on a single |
1028 | * q_vector!!! | |
021230d4 | 1029 | **/ |
9a799d71 AK |
1030 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) |
1031 | { | |
021230d4 AV |
1032 | struct ixgbe_q_vector *q_vector = |
1033 | container_of(napi, struct ixgbe_q_vector, napi); | |
1034 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
f0848276 | 1035 | struct ixgbe_ring *rx_ring = NULL; |
9a799d71 | 1036 | int work_done = 0; |
021230d4 | 1037 | long r_idx; |
9a799d71 | 1038 | |
021230d4 | 1039 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 1040 | rx_ring = &(adapter->rx_ring[r_idx]); |
a1f96ee7 | 1041 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd | 1042 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 1043 | ixgbe_update_rx_dca(adapter, rx_ring); |
bd0362dd | 1044 | #endif |
9a799d71 | 1045 | |
3a581073 | 1046 | ixgbe_clean_rx_irq(adapter, rx_ring, &work_done, budget); |
9a799d71 | 1047 | |
021230d4 AV |
1048 | /* If all Rx work done, exit the polling mode */ |
1049 | if (work_done < budget) { | |
1050 | netif_rx_complete(adapter->netdev, napi); | |
30efa5a3 | 1051 | if (adapter->itr_setting & 3) |
f494e8fa | 1052 | ixgbe_set_itr_msix(q_vector); |
9a799d71 | 1053 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
3a581073 | 1054 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, rx_ring->v_idx); |
9a799d71 AK |
1055 | } |
1056 | ||
1057 | return work_done; | |
1058 | } | |
1059 | ||
f0848276 JB |
1060 | /** |
1061 | * ixgbe_clean_rxonly_many - msix (aka one shot) rx clean routine | |
1062 | * @napi: napi struct with our devices info in it | |
1063 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1064 | * | |
1065 | * This function will clean more than one rx queue associated with a | |
1066 | * q_vector. | |
1067 | **/ | |
1068 | static int ixgbe_clean_rxonly_many(struct napi_struct *napi, int budget) | |
1069 | { | |
1070 | struct ixgbe_q_vector *q_vector = | |
1071 | container_of(napi, struct ixgbe_q_vector, napi); | |
1072 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
1073 | struct net_device *netdev = adapter->netdev; | |
1074 | struct ixgbe_ring *rx_ring = NULL; | |
1075 | int work_done = 0, i; | |
1076 | long r_idx; | |
1077 | u16 enable_mask = 0; | |
1078 | ||
1079 | /* attempt to distribute budget to each queue fairly, but don't allow | |
1080 | * the budget to go below 1 because we'll exit polling */ | |
1081 | budget /= (q_vector->rxr_count ?: 1); | |
1082 | budget = max(budget, 1); | |
1083 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1084 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1085 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1086 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) | |
1087 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) | |
1088 | ixgbe_update_rx_dca(adapter, rx_ring); | |
1089 | #endif | |
1090 | ixgbe_clean_rx_irq(adapter, rx_ring, &work_done, budget); | |
1091 | enable_mask |= rx_ring->v_idx; | |
1092 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1093 | r_idx + 1); | |
1094 | } | |
1095 | ||
1096 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1097 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1098 | /* If all Rx work done, exit the polling mode */ | |
7f821875 | 1099 | if (work_done < budget) { |
f0848276 JB |
1100 | netif_rx_complete(netdev, napi); |
1101 | if (adapter->itr_setting & 3) | |
1102 | ixgbe_set_itr_msix(q_vector); | |
1103 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1104 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, enable_mask); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | return work_done; | |
1109 | } | |
021230d4 AV |
1110 | static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx, |
1111 | int r_idx) | |
1112 | { | |
1113 | a->q_vector[v_idx].adapter = a; | |
1114 | set_bit(r_idx, a->q_vector[v_idx].rxr_idx); | |
1115 | a->q_vector[v_idx].rxr_count++; | |
1116 | a->rx_ring[r_idx].v_idx = 1 << v_idx; | |
1117 | } | |
1118 | ||
1119 | static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx, | |
1120 | int r_idx) | |
1121 | { | |
1122 | a->q_vector[v_idx].adapter = a; | |
1123 | set_bit(r_idx, a->q_vector[v_idx].txr_idx); | |
1124 | a->q_vector[v_idx].txr_count++; | |
1125 | a->tx_ring[r_idx].v_idx = 1 << v_idx; | |
1126 | } | |
1127 | ||
9a799d71 | 1128 | /** |
021230d4 AV |
1129 | * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors |
1130 | * @adapter: board private structure to initialize | |
1131 | * @vectors: allotted vector count for descriptor rings | |
9a799d71 | 1132 | * |
021230d4 AV |
1133 | * This function maps descriptor rings to the queue-specific vectors |
1134 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
1135 | * one vector per ring/queue, but on a constrained vector budget, we | |
1136 | * group the rings as "efficiently" as possible. You would add new | |
1137 | * mapping configurations in here. | |
9a799d71 | 1138 | **/ |
021230d4 AV |
1139 | static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter, |
1140 | int vectors) | |
1141 | { | |
1142 | int v_start = 0; | |
1143 | int rxr_idx = 0, txr_idx = 0; | |
1144 | int rxr_remaining = adapter->num_rx_queues; | |
1145 | int txr_remaining = adapter->num_tx_queues; | |
1146 | int i, j; | |
1147 | int rqpv, tqpv; | |
1148 | int err = 0; | |
1149 | ||
1150 | /* No mapping required if MSI-X is disabled. */ | |
1151 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1152 | goto out; | |
9a799d71 | 1153 | |
021230d4 AV |
1154 | /* |
1155 | * The ideal configuration... | |
1156 | * We have enough vectors to map one per queue. | |
1157 | */ | |
1158 | if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) { | |
1159 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
1160 | map_vector_to_rxq(adapter, v_start, rxr_idx); | |
9a799d71 | 1161 | |
021230d4 AV |
1162 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) |
1163 | map_vector_to_txq(adapter, v_start, txr_idx); | |
9a799d71 | 1164 | |
9a799d71 | 1165 | goto out; |
021230d4 | 1166 | } |
9a799d71 | 1167 | |
021230d4 AV |
1168 | /* |
1169 | * If we don't have enough vectors for a 1-to-1 | |
1170 | * mapping, we'll have to group them so there are | |
1171 | * multiple queues per vector. | |
1172 | */ | |
1173 | /* Re-adjusting *qpv takes care of the remainder. */ | |
1174 | for (i = v_start; i < vectors; i++) { | |
1175 | rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i); | |
1176 | for (j = 0; j < rqpv; j++) { | |
1177 | map_vector_to_rxq(adapter, i, rxr_idx); | |
1178 | rxr_idx++; | |
1179 | rxr_remaining--; | |
1180 | } | |
1181 | } | |
1182 | for (i = v_start; i < vectors; i++) { | |
1183 | tqpv = DIV_ROUND_UP(txr_remaining, vectors - i); | |
1184 | for (j = 0; j < tqpv; j++) { | |
1185 | map_vector_to_txq(adapter, i, txr_idx); | |
1186 | txr_idx++; | |
1187 | txr_remaining--; | |
9a799d71 | 1188 | } |
9a799d71 AK |
1189 | } |
1190 | ||
021230d4 AV |
1191 | out: |
1192 | return err; | |
1193 | } | |
1194 | ||
1195 | /** | |
1196 | * ixgbe_request_msix_irqs - Initialize MSI-X interrupts | |
1197 | * @adapter: board private structure | |
1198 | * | |
1199 | * ixgbe_request_msix_irqs allocates MSI-X vectors and requests | |
1200 | * interrupts from the kernel. | |
1201 | **/ | |
1202 | static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) | |
1203 | { | |
1204 | struct net_device *netdev = adapter->netdev; | |
1205 | irqreturn_t (*handler)(int, void *); | |
1206 | int i, vector, q_vectors, err; | |
1207 | ||
1208 | /* Decrement for Other and TCP Timer vectors */ | |
1209 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1210 | ||
1211 | /* Map the Tx/Rx rings to the vectors we were allotted. */ | |
1212 | err = ixgbe_map_rings_to_vectors(adapter, q_vectors); | |
1213 | if (err) | |
1214 | goto out; | |
1215 | ||
1216 | #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \ | |
1217 | (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \ | |
1218 | &ixgbe_msix_clean_many) | |
1219 | for (vector = 0; vector < q_vectors; vector++) { | |
1220 | handler = SET_HANDLER(&adapter->q_vector[vector]); | |
1221 | sprintf(adapter->name[vector], "%s:v%d-%s", | |
1222 | netdev->name, vector, | |
1223 | (handler == &ixgbe_msix_clean_rx) ? "Rx" : | |
1224 | ((handler == &ixgbe_msix_clean_tx) ? "Tx" : "TxRx")); | |
1225 | err = request_irq(adapter->msix_entries[vector].vector, | |
1226 | handler, 0, adapter->name[vector], | |
1227 | &(adapter->q_vector[vector])); | |
9a799d71 AK |
1228 | if (err) { |
1229 | DPRINTK(PROBE, ERR, | |
1230 | "request_irq failed for MSIX interrupt " | |
1231 | "Error: %d\n", err); | |
021230d4 | 1232 | goto free_queue_irqs; |
9a799d71 | 1233 | } |
9a799d71 AK |
1234 | } |
1235 | ||
021230d4 AV |
1236 | sprintf(adapter->name[vector], "%s:lsc", netdev->name); |
1237 | err = request_irq(adapter->msix_entries[vector].vector, | |
1238 | &ixgbe_msix_lsc, 0, adapter->name[vector], netdev); | |
9a799d71 AK |
1239 | if (err) { |
1240 | DPRINTK(PROBE, ERR, | |
1241 | "request_irq for msix_lsc failed: %d\n", err); | |
021230d4 | 1242 | goto free_queue_irqs; |
9a799d71 AK |
1243 | } |
1244 | ||
9a799d71 AK |
1245 | return 0; |
1246 | ||
021230d4 AV |
1247 | free_queue_irqs: |
1248 | for (i = vector - 1; i >= 0; i--) | |
1249 | free_irq(adapter->msix_entries[--vector].vector, | |
1250 | &(adapter->q_vector[i])); | |
1251 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
1252 | pci_disable_msix(adapter->pdev); | |
9a799d71 AK |
1253 | kfree(adapter->msix_entries); |
1254 | adapter->msix_entries = NULL; | |
021230d4 | 1255 | out: |
9a799d71 AK |
1256 | return err; |
1257 | } | |
1258 | ||
f494e8fa AV |
1259 | static void ixgbe_set_itr(struct ixgbe_adapter *adapter) |
1260 | { | |
1261 | struct ixgbe_hw *hw = &adapter->hw; | |
1262 | struct ixgbe_q_vector *q_vector = adapter->q_vector; | |
1263 | u8 current_itr; | |
1264 | u32 new_itr = q_vector->eitr; | |
1265 | struct ixgbe_ring *rx_ring = &adapter->rx_ring[0]; | |
1266 | struct ixgbe_ring *tx_ring = &adapter->tx_ring[0]; | |
1267 | ||
30efa5a3 JB |
1268 | q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr, |
1269 | q_vector->tx_itr, | |
1270 | tx_ring->total_packets, | |
1271 | tx_ring->total_bytes); | |
1272 | q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr, | |
1273 | q_vector->rx_itr, | |
1274 | rx_ring->total_packets, | |
1275 | rx_ring->total_bytes); | |
f494e8fa | 1276 | |
30efa5a3 | 1277 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
1278 | |
1279 | switch (current_itr) { | |
1280 | /* counts and packets in update_itr are dependent on these numbers */ | |
1281 | case lowest_latency: | |
1282 | new_itr = 100000; | |
1283 | break; | |
1284 | case low_latency: | |
1285 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1286 | break; | |
1287 | case bulk_latency: | |
1288 | new_itr = 8000; | |
1289 | break; | |
1290 | default: | |
1291 | break; | |
1292 | } | |
1293 | ||
1294 | if (new_itr != q_vector->eitr) { | |
1295 | u32 itr_reg; | |
1296 | /* do an exponential smoothing */ | |
1297 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
1298 | q_vector->eitr = new_itr; | |
1299 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
1300 | /* must write high and low 16 bits to reset counter */ | |
1301 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), itr_reg | (itr_reg)<<16); | |
1302 | } | |
1303 | ||
1304 | return; | |
1305 | } | |
1306 | ||
021230d4 AV |
1307 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter); |
1308 | ||
9a799d71 | 1309 | /** |
021230d4 | 1310 | * ixgbe_intr - legacy mode Interrupt Handler |
9a799d71 AK |
1311 | * @irq: interrupt number |
1312 | * @data: pointer to a network interface device structure | |
1313 | * @pt_regs: CPU registers structure | |
1314 | **/ | |
1315 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
1316 | { | |
1317 | struct net_device *netdev = data; | |
1318 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1319 | struct ixgbe_hw *hw = &adapter->hw; | |
1320 | u32 eicr; | |
1321 | ||
9a799d71 | 1322 | |
021230d4 AV |
1323 | /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read |
1324 | * therefore no explict interrupt disable is necessary */ | |
1325 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
f47cf66e JB |
1326 | if (!eicr) { |
1327 | /* shared interrupt alert! | |
1328 | * make sure interrupts are enabled because the read will | |
1329 | * have disabled interrupts due to EIAM */ | |
1330 | ixgbe_irq_enable(adapter); | |
9a799d71 | 1331 | return IRQ_NONE; /* Not our interrupt */ |
f47cf66e | 1332 | } |
9a799d71 | 1333 | |
cf8280ee JB |
1334 | if (eicr & IXGBE_EICR_LSC) |
1335 | ixgbe_check_lsc(adapter); | |
021230d4 AV |
1336 | |
1337 | if (netif_rx_schedule_prep(netdev, &adapter->q_vector[0].napi)) { | |
f494e8fa AV |
1338 | adapter->tx_ring[0].total_packets = 0; |
1339 | adapter->tx_ring[0].total_bytes = 0; | |
1340 | adapter->rx_ring[0].total_packets = 0; | |
1341 | adapter->rx_ring[0].total_bytes = 0; | |
021230d4 AV |
1342 | /* would disable interrupts here but EIAM disabled it */ |
1343 | __netif_rx_schedule(netdev, &adapter->q_vector[0].napi); | |
9a799d71 AK |
1344 | } |
1345 | ||
1346 | return IRQ_HANDLED; | |
1347 | } | |
1348 | ||
021230d4 AV |
1349 | static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter) |
1350 | { | |
1351 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1352 | ||
1353 | for (i = 0; i < q_vectors; i++) { | |
1354 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[i]; | |
1355 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); | |
1356 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); | |
1357 | q_vector->rxr_count = 0; | |
1358 | q_vector->txr_count = 0; | |
1359 | } | |
1360 | } | |
1361 | ||
9a799d71 AK |
1362 | /** |
1363 | * ixgbe_request_irq - initialize interrupts | |
1364 | * @adapter: board private structure | |
1365 | * | |
1366 | * Attempts to configure interrupts using the best available | |
1367 | * capabilities of the hardware and kernel. | |
1368 | **/ | |
021230d4 | 1369 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter) |
9a799d71 AK |
1370 | { |
1371 | struct net_device *netdev = adapter->netdev; | |
021230d4 | 1372 | int err; |
9a799d71 | 1373 | |
021230d4 AV |
1374 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1375 | err = ixgbe_request_msix_irqs(adapter); | |
1376 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1377 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0, | |
1378 | netdev->name, netdev); | |
1379 | } else { | |
1380 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED, | |
1381 | netdev->name, netdev); | |
9a799d71 AK |
1382 | } |
1383 | ||
9a799d71 AK |
1384 | if (err) |
1385 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
1386 | ||
9a799d71 AK |
1387 | return err; |
1388 | } | |
1389 | ||
1390 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
1391 | { | |
1392 | struct net_device *netdev = adapter->netdev; | |
1393 | ||
1394 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
021230d4 | 1395 | int i, q_vectors; |
9a799d71 | 1396 | |
021230d4 AV |
1397 | q_vectors = adapter->num_msix_vectors; |
1398 | ||
1399 | i = q_vectors - 1; | |
9a799d71 | 1400 | free_irq(adapter->msix_entries[i].vector, netdev); |
9a799d71 | 1401 | |
021230d4 AV |
1402 | i--; |
1403 | for (; i >= 0; i--) { | |
1404 | free_irq(adapter->msix_entries[i].vector, | |
1405 | &(adapter->q_vector[i])); | |
1406 | } | |
1407 | ||
1408 | ixgbe_reset_q_vectors(adapter); | |
1409 | } else { | |
1410 | free_irq(adapter->pdev->irq, netdev); | |
9a799d71 AK |
1411 | } |
1412 | } | |
1413 | ||
1414 | /** | |
1415 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
1416 | * @adapter: board private structure | |
1417 | **/ | |
1418 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
1419 | { | |
9a799d71 AK |
1420 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
1421 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
021230d4 AV |
1422 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1423 | int i; | |
1424 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1425 | synchronize_irq(adapter->msix_entries[i].vector); | |
1426 | } else { | |
1427 | synchronize_irq(adapter->pdev->irq); | |
1428 | } | |
9a799d71 AK |
1429 | } |
1430 | ||
1431 | /** | |
1432 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
1433 | * @adapter: board private structure | |
1434 | **/ | |
1435 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
1436 | { | |
021230d4 AV |
1437 | u32 mask; |
1438 | mask = IXGBE_EIMS_ENABLE_MASK; | |
1439 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); | |
d4f80882 | 1440 | IXGBE_WRITE_FLUSH(&adapter->hw); |
9a799d71 AK |
1441 | } |
1442 | ||
1443 | /** | |
1444 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
1445 | * | |
1446 | **/ | |
1447 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
1448 | { | |
9a799d71 AK |
1449 | struct ixgbe_hw *hw = &adapter->hw; |
1450 | ||
021230d4 | 1451 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), |
30efa5a3 | 1452 | EITR_INTS_PER_SEC_TO_REG(adapter->eitr_param)); |
9a799d71 AK |
1453 | |
1454 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0); | |
021230d4 AV |
1455 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(0), 0); |
1456 | ||
1457 | map_vector_to_rxq(adapter, 0, 0); | |
1458 | map_vector_to_txq(adapter, 0, 0); | |
1459 | ||
1460 | DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n"); | |
9a799d71 AK |
1461 | } |
1462 | ||
1463 | /** | |
3a581073 | 1464 | * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset |
9a799d71 AK |
1465 | * @adapter: board private structure |
1466 | * | |
1467 | * Configure the Tx unit of the MAC after a reset. | |
1468 | **/ | |
1469 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
1470 | { | |
e01c31a5 | 1471 | u64 tdba, tdwba; |
9a799d71 | 1472 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 1473 | u32 i, j, tdlen, txctrl; |
9a799d71 AK |
1474 | |
1475 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1476 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
e01c31a5 JB |
1477 | struct ixgbe_ring *ring = &adapter->tx_ring[i]; |
1478 | j = ring->reg_idx; | |
1479 | tdba = ring->dma; | |
1480 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); | |
021230d4 | 1481 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j), |
e01c31a5 | 1482 | (tdba & DMA_32BIT_MASK)); |
021230d4 | 1483 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32)); |
e01c31a5 JB |
1484 | tdwba = ring->dma + |
1485 | (ring->count * sizeof(union ixgbe_adv_tx_desc)); | |
1486 | tdwba |= IXGBE_TDWBAL_HEAD_WB_ENABLE; | |
1487 | IXGBE_WRITE_REG(hw, IXGBE_TDWBAL(j), tdwba & DMA_32BIT_MASK); | |
1488 | IXGBE_WRITE_REG(hw, IXGBE_TDWBAH(j), (tdwba >> 32)); | |
021230d4 AV |
1489 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen); |
1490 | IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0); | |
1491 | IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0); | |
1492 | adapter->tx_ring[i].head = IXGBE_TDH(j); | |
1493 | adapter->tx_ring[i].tail = IXGBE_TDT(j); | |
1494 | /* Disable Tx Head Writeback RO bit, since this hoses | |
1495 | * bookkeeping if things aren't delivered in order. | |
1496 | */ | |
e01c31a5 | 1497 | txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j)); |
021230d4 | 1498 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; |
e01c31a5 | 1499 | IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl); |
9a799d71 | 1500 | } |
9a799d71 AK |
1501 | } |
1502 | ||
cc41ac7c JB |
1503 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 |
1504 | ||
1505 | static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index) | |
1506 | { | |
1507 | struct ixgbe_ring *rx_ring; | |
1508 | u32 srrctl; | |
1509 | int queue0; | |
3be1adfb AD |
1510 | unsigned long mask; |
1511 | ||
1512 | /* program one srrctl register per VMDq index */ | |
1513 | if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { | |
1514 | long shift, len; | |
1515 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; | |
1516 | len = sizeof(adapter->ring_feature[RING_F_VMDQ].mask) * 8; | |
1517 | shift = find_first_bit(&mask, len); | |
1518 | queue0 = index & mask; | |
1519 | index = (index & mask) >> shift; | |
1520 | /* program one srrctl per RSS queue since RDRXCTL.MVMEN is enabled */ | |
cc41ac7c | 1521 | } else { |
3be1adfb AD |
1522 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; |
1523 | queue0 = index & mask; | |
1524 | index = index & mask; | |
cc41ac7c | 1525 | } |
3be1adfb | 1526 | |
cc41ac7c JB |
1527 | rx_ring = &adapter->rx_ring[queue0]; |
1528 | ||
1529 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index)); | |
1530 | ||
1531 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
1532 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
1533 | ||
1534 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1535 | srrctl |= IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1536 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1537 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
1538 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
1539 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
1540 | } else { | |
1541 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1542 | ||
1543 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1544 | srrctl |= IXGBE_RXBUFFER_2048 >> | |
1545 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1546 | else | |
1547 | srrctl |= rx_ring->rx_buf_len >> | |
1548 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1549 | } | |
1550 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl); | |
1551 | } | |
9a799d71 | 1552 | |
177db6ff MC |
1553 | /** |
1554 | * ixgbe_get_skb_hdr - helper function for LRO header processing | |
1555 | * @skb: pointer to sk_buff to be added to LRO packet | |
1556 | * @iphdr: pointer to tcp header structure | |
1557 | * @tcph: pointer to tcp header structure | |
1558 | * @hdr_flags: pointer to header flags | |
1559 | * @priv: private data | |
1560 | **/ | |
1561 | static int ixgbe_get_skb_hdr(struct sk_buff *skb, void **iphdr, void **tcph, | |
1562 | u64 *hdr_flags, void *priv) | |
1563 | { | |
1564 | union ixgbe_adv_rx_desc *rx_desc = priv; | |
1565 | ||
1566 | /* Verify that this is a valid IPv4 TCP packet */ | |
e9990a9c JB |
1567 | if (!((ixgbe_get_pkt_info(rx_desc) & IXGBE_RXDADV_PKTTYPE_IPV4) && |
1568 | (ixgbe_get_pkt_info(rx_desc) & IXGBE_RXDADV_PKTTYPE_TCP))) | |
177db6ff MC |
1569 | return -1; |
1570 | ||
1571 | /* Set network headers */ | |
1572 | skb_reset_network_header(skb); | |
1573 | skb_set_transport_header(skb, ip_hdrlen(skb)); | |
1574 | *iphdr = ip_hdr(skb); | |
1575 | *tcph = tcp_hdr(skb); | |
1576 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
1577 | return 0; | |
1578 | } | |
1579 | ||
cc41ac7c JB |
1580 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1581 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1582 | ||
9a799d71 | 1583 | /** |
3a581073 | 1584 | * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset |
9a799d71 AK |
1585 | * @adapter: board private structure |
1586 | * | |
1587 | * Configure the Rx unit of the MAC after a reset. | |
1588 | **/ | |
1589 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
1590 | { | |
1591 | u64 rdba; | |
1592 | struct ixgbe_hw *hw = &adapter->hw; | |
1593 | struct net_device *netdev = adapter->netdev; | |
1594 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
021230d4 | 1595 | int i, j; |
9a799d71 | 1596 | u32 rdlen, rxctrl, rxcsum; |
7c6e0a43 JB |
1597 | static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D, |
1598 | 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE, | |
1599 | 0x6A3E67EA, 0x14364D17, 0x3BED200D}; | |
9a799d71 | 1600 | u32 fctrl, hlreg0; |
9a799d71 | 1601 | u32 pages; |
cc41ac7c JB |
1602 | u32 reta = 0, mrqc; |
1603 | u32 rdrxctl; | |
7c6e0a43 | 1604 | int rx_buf_len; |
9a799d71 AK |
1605 | |
1606 | /* Decide whether to use packet split mode or not */ | |
762f4c57 | 1607 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; |
9a799d71 AK |
1608 | |
1609 | /* Set the RX buffer length according to the mode */ | |
1610 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 | 1611 | rx_buf_len = IXGBE_RX_HDR_SIZE; |
9a799d71 AK |
1612 | } else { |
1613 | if (netdev->mtu <= ETH_DATA_LEN) | |
7c6e0a43 | 1614 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9a799d71 | 1615 | else |
7c6e0a43 | 1616 | rx_buf_len = ALIGN(max_frame, 1024); |
9a799d71 AK |
1617 | } |
1618 | ||
1619 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
1620 | fctrl |= IXGBE_FCTRL_BAM; | |
021230d4 | 1621 | fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ |
9a799d71 AK |
1622 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); |
1623 | ||
1624 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
1625 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
1626 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
1627 | else | |
1628 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
1629 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
1630 | ||
1631 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
1632 | ||
9a799d71 AK |
1633 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); |
1634 | /* disable receives while setting up the descriptors */ | |
1635 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1636 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1637 | ||
1638 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1639 | * the Base and Length of the Rx Descriptor Ring */ | |
1640 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1641 | rdba = adapter->rx_ring[i].dma; | |
7c6e0a43 JB |
1642 | j = adapter->rx_ring[i].reg_idx; |
1643 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_32BIT_MASK)); | |
1644 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32)); | |
1645 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen); | |
1646 | IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0); | |
1647 | IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0); | |
1648 | adapter->rx_ring[i].head = IXGBE_RDH(j); | |
1649 | adapter->rx_ring[i].tail = IXGBE_RDT(j); | |
1650 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; | |
e9990a9c JB |
1651 | /* Intitial LRO Settings */ |
1652 | adapter->rx_ring[i].lro_mgr.max_aggr = IXGBE_MAX_LRO_AGGREGATE; | |
1653 | adapter->rx_ring[i].lro_mgr.max_desc = IXGBE_MAX_LRO_DESCRIPTORS; | |
1654 | adapter->rx_ring[i].lro_mgr.get_skb_header = ixgbe_get_skb_hdr; | |
1655 | adapter->rx_ring[i].lro_mgr.features = LRO_F_EXTRACT_VLAN_ID; | |
1656 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) | |
1657 | adapter->rx_ring[i].lro_mgr.features |= LRO_F_NAPI; | |
1658 | adapter->rx_ring[i].lro_mgr.dev = adapter->netdev; | |
1659 | adapter->rx_ring[i].lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1660 | adapter->rx_ring[i].lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
cc41ac7c JB |
1661 | |
1662 | ixgbe_configure_srrctl(adapter, j); | |
9a799d71 AK |
1663 | } |
1664 | ||
cc41ac7c JB |
1665 | /* |
1666 | * For VMDq support of different descriptor types or | |
1667 | * buffer sizes through the use of multiple SRRCTL | |
1668 | * registers, RDRXCTL.MVMEN must be set to 1 | |
1669 | * | |
1670 | * also, the manual doesn't mention it clearly but DCA hints | |
1671 | * will only use queue 0's tags unless this bit is set. Side | |
1672 | * effects of setting this bit are only that SRRCTL must be | |
1673 | * fully programmed [0..15] | |
1674 | */ | |
1675 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); | |
1676 | rdrxctl |= IXGBE_RDRXCTL_MVMEN; | |
1677 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); | |
1678 | ||
177db6ff | 1679 | |
021230d4 | 1680 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
9a799d71 | 1681 | /* Fill out redirection table */ |
021230d4 AV |
1682 | for (i = 0, j = 0; i < 128; i++, j++) { |
1683 | if (j == adapter->ring_feature[RING_F_RSS].indices) | |
1684 | j = 0; | |
1685 | /* reta = 4-byte sliding window of | |
1686 | * 0x00..(indices-1)(indices-1)00..etc. */ | |
1687 | reta = (reta << 8) | (j * 0x11); | |
1688 | if ((i & 3) == 3) | |
1689 | IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); | |
9a799d71 AK |
1690 | } |
1691 | ||
1692 | /* Fill out hash function seeds */ | |
1693 | for (i = 0; i < 10; i++) | |
7c6e0a43 | 1694 | IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); |
9a799d71 AK |
1695 | |
1696 | mrqc = IXGBE_MRQC_RSSEN | |
1697 | /* Perform hash on these packet types */ | |
7c6e0a43 JB |
1698 | | IXGBE_MRQC_RSS_FIELD_IPV4 |
1699 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1700 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1701 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP | |
1702 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX | |
1703 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1704 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1705 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP | |
1706 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; | |
9a799d71 | 1707 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); |
021230d4 | 1708 | } |
9a799d71 | 1709 | |
021230d4 AV |
1710 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |
1711 | ||
1712 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED || | |
1713 | adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1714 | /* Disable indicating checksum in descriptor, enables | |
1715 | * RSS hash */ | |
9a799d71 | 1716 | rxcsum |= IXGBE_RXCSUM_PCSD; |
9a799d71 | 1717 | } |
021230d4 AV |
1718 | if (!(rxcsum & IXGBE_RXCSUM_PCSD)) { |
1719 | /* Enable IPv4 payload checksum for UDP fragments | |
1720 | * if PCSD is not set */ | |
1721 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1722 | } | |
1723 | ||
1724 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
9a799d71 AK |
1725 | } |
1726 | ||
1727 | static void ixgbe_vlan_rx_register(struct net_device *netdev, | |
1728 | struct vlan_group *grp) | |
1729 | { | |
1730 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1731 | u32 ctrl; | |
1732 | ||
d4f80882 AV |
1733 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1734 | ixgbe_irq_disable(adapter); | |
9a799d71 AK |
1735 | adapter->vlgrp = grp; |
1736 | ||
1737 | if (grp) { | |
1738 | /* enable VLAN tag insert/strip */ | |
1739 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
746b9f02 | 1740 | ctrl |= IXGBE_VLNCTRL_VME; |
9a799d71 AK |
1741 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; |
1742 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
1743 | } | |
1744 | ||
d4f80882 AV |
1745 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1746 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1747 | } |
1748 | ||
1749 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1750 | { | |
1751 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
c44ade9e | 1752 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 AK |
1753 | |
1754 | /* add VID to filter table */ | |
c44ade9e | 1755 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true); |
9a799d71 AK |
1756 | } |
1757 | ||
1758 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1759 | { | |
1760 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
c44ade9e | 1761 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 | 1762 | |
d4f80882 AV |
1763 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1764 | ixgbe_irq_disable(adapter); | |
1765 | ||
9a799d71 | 1766 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
d4f80882 AV |
1767 | |
1768 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1769 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1770 | |
1771 | /* remove VID from filter table */ | |
c44ade9e | 1772 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false); |
9a799d71 AK |
1773 | } |
1774 | ||
1775 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) | |
1776 | { | |
1777 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1778 | ||
1779 | if (adapter->vlgrp) { | |
1780 | u16 vid; | |
1781 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1782 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1783 | continue; | |
1784 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
1785 | } | |
1786 | } | |
1787 | } | |
1788 | ||
2c5645cf CL |
1789 | static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq) |
1790 | { | |
1791 | struct dev_mc_list *mc_ptr; | |
1792 | u8 *addr = *mc_addr_ptr; | |
1793 | *vmdq = 0; | |
1794 | ||
1795 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); | |
1796 | if (mc_ptr->next) | |
1797 | *mc_addr_ptr = mc_ptr->next->dmi_addr; | |
1798 | else | |
1799 | *mc_addr_ptr = NULL; | |
1800 | ||
1801 | return addr; | |
1802 | } | |
1803 | ||
9a799d71 | 1804 | /** |
2c5645cf | 1805 | * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set |
9a799d71 AK |
1806 | * @netdev: network interface device structure |
1807 | * | |
2c5645cf CL |
1808 | * The set_rx_method entry point is called whenever the unicast/multicast |
1809 | * address list or the network interface flags are updated. This routine is | |
1810 | * responsible for configuring the hardware for proper unicast, multicast and | |
1811 | * promiscuous mode. | |
9a799d71 | 1812 | **/ |
2c5645cf | 1813 | static void ixgbe_set_rx_mode(struct net_device *netdev) |
9a799d71 AK |
1814 | { |
1815 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1816 | struct ixgbe_hw *hw = &adapter->hw; | |
3d01625a | 1817 | u32 fctrl, vlnctrl; |
2c5645cf CL |
1818 | u8 *addr_list = NULL; |
1819 | int addr_count = 0; | |
9a799d71 AK |
1820 | |
1821 | /* Check for Promiscuous and All Multicast modes */ | |
1822 | ||
1823 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
3d01625a | 1824 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); |
9a799d71 AK |
1825 | |
1826 | if (netdev->flags & IFF_PROMISC) { | |
2c5645cf | 1827 | hw->addr_ctrl.user_set_promisc = 1; |
9a799d71 | 1828 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); |
3d01625a | 1829 | vlnctrl &= ~IXGBE_VLNCTRL_VFE; |
9a799d71 | 1830 | } else { |
746b9f02 PM |
1831 | if (netdev->flags & IFF_ALLMULTI) { |
1832 | fctrl |= IXGBE_FCTRL_MPE; | |
1833 | fctrl &= ~IXGBE_FCTRL_UPE; | |
1834 | } else { | |
1835 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1836 | } | |
3d01625a | 1837 | vlnctrl |= IXGBE_VLNCTRL_VFE; |
2c5645cf | 1838 | hw->addr_ctrl.user_set_promisc = 0; |
9a799d71 AK |
1839 | } |
1840 | ||
1841 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
3d01625a | 1842 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
9a799d71 | 1843 | |
2c5645cf CL |
1844 | /* reprogram secondary unicast list */ |
1845 | addr_count = netdev->uc_count; | |
1846 | if (addr_count) | |
1847 | addr_list = netdev->uc_list->dmi_addr; | |
c44ade9e JB |
1848 | hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count, |
1849 | ixgbe_addr_list_itr); | |
9a799d71 | 1850 | |
2c5645cf CL |
1851 | /* reprogram multicast list */ |
1852 | addr_count = netdev->mc_count; | |
1853 | if (addr_count) | |
1854 | addr_list = netdev->mc_list->dmi_addr; | |
c44ade9e JB |
1855 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, |
1856 | ixgbe_addr_list_itr); | |
9a799d71 AK |
1857 | } |
1858 | ||
021230d4 AV |
1859 | static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) |
1860 | { | |
1861 | int q_idx; | |
1862 | struct ixgbe_q_vector *q_vector; | |
1863 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1864 | ||
1865 | /* legacy and MSI only use one vector */ | |
1866 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1867 | q_vectors = 1; | |
1868 | ||
1869 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
f0848276 | 1870 | struct napi_struct *napi; |
021230d4 AV |
1871 | q_vector = &adapter->q_vector[q_idx]; |
1872 | if (!q_vector->rxr_count) | |
1873 | continue; | |
f0848276 JB |
1874 | napi = &q_vector->napi; |
1875 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) && | |
1876 | (q_vector->rxr_count > 1)) | |
1877 | napi->poll = &ixgbe_clean_rxonly_many; | |
1878 | ||
1879 | napi_enable(napi); | |
021230d4 AV |
1880 | } |
1881 | } | |
1882 | ||
1883 | static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) | |
1884 | { | |
1885 | int q_idx; | |
1886 | struct ixgbe_q_vector *q_vector; | |
1887 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1888 | ||
1889 | /* legacy and MSI only use one vector */ | |
1890 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1891 | q_vectors = 1; | |
1892 | ||
1893 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1894 | q_vector = &adapter->q_vector[q_idx]; | |
1895 | if (!q_vector->rxr_count) | |
1896 | continue; | |
1897 | napi_disable(&q_vector->napi); | |
1898 | } | |
1899 | } | |
1900 | ||
9a799d71 AK |
1901 | static void ixgbe_configure(struct ixgbe_adapter *adapter) |
1902 | { | |
1903 | struct net_device *netdev = adapter->netdev; | |
1904 | int i; | |
1905 | ||
2c5645cf | 1906 | ixgbe_set_rx_mode(netdev); |
9a799d71 AK |
1907 | |
1908 | ixgbe_restore_vlan(adapter); | |
1909 | ||
1910 | ixgbe_configure_tx(adapter); | |
1911 | ixgbe_configure_rx(adapter); | |
1912 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1913 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
1914 | (adapter->rx_ring[i].count - 1)); | |
1915 | } | |
1916 | ||
1917 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) | |
1918 | { | |
1919 | struct net_device *netdev = adapter->netdev; | |
9a799d71 | 1920 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 1921 | int i, j = 0; |
9a799d71 | 1922 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
021230d4 AV |
1923 | u32 txdctl, rxdctl, mhadd; |
1924 | u32 gpie; | |
9a799d71 | 1925 | |
5eba3699 AV |
1926 | ixgbe_get_hw_control(adapter); |
1927 | ||
021230d4 AV |
1928 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) || |
1929 | (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) { | |
9a799d71 AK |
1930 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1931 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
1932 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); | |
1933 | } else { | |
1934 | /* MSI only */ | |
021230d4 | 1935 | gpie = 0; |
9a799d71 | 1936 | } |
021230d4 AV |
1937 | /* XXX: to interrupt immediately for EICS writes, enable this */ |
1938 | /* gpie |= IXGBE_GPIE_EIMEN; */ | |
1939 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); | |
9a799d71 AK |
1940 | } |
1941 | ||
021230d4 AV |
1942 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { |
1943 | /* legacy interrupts, use EIAM to auto-mask when reading EICR, | |
1944 | * specifically only auto mask tx and rx interrupts */ | |
1945 | IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); | |
1946 | } | |
9a799d71 | 1947 | |
021230d4 | 1948 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); |
9a799d71 AK |
1949 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { |
1950 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
1951 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
1952 | ||
1953 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
1954 | } | |
1955 | ||
1956 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
021230d4 AV |
1957 | j = adapter->tx_ring[i].reg_idx; |
1958 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
e01c31a5 JB |
1959 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ |
1960 | txdctl |= (8 << 16); | |
9a799d71 | 1961 | txdctl |= IXGBE_TXDCTL_ENABLE; |
021230d4 | 1962 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
9a799d71 AK |
1963 | } |
1964 | ||
1965 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
021230d4 AV |
1966 | j = adapter->rx_ring[i].reg_idx; |
1967 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); | |
1968 | /* enable PTHRESH=32 descriptors (half the internal cache) | |
1969 | * and HTHRESH=0 descriptors (to minimize latency on fetch), | |
1970 | * this also removes a pesky rx_no_buffer_count increment */ | |
1971 | rxdctl |= 0x0020; | |
9a799d71 | 1972 | rxdctl |= IXGBE_RXDCTL_ENABLE; |
021230d4 | 1973 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl); |
9a799d71 AK |
1974 | } |
1975 | /* enable all receives */ | |
1976 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1977 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
1978 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl); | |
1979 | ||
1980 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
1981 | ixgbe_configure_msix(adapter); | |
1982 | else | |
1983 | ixgbe_configure_msi_and_legacy(adapter); | |
1984 | ||
1985 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
021230d4 AV |
1986 | ixgbe_napi_enable_all(adapter); |
1987 | ||
1988 | /* clear any pending interrupts, may auto mask */ | |
1989 | IXGBE_READ_REG(hw, IXGBE_EICR); | |
1990 | ||
9a799d71 AK |
1991 | ixgbe_irq_enable(adapter); |
1992 | ||
1993 | /* bring the link up in the watchdog, this could race with our first | |
1994 | * link up interrupt but shouldn't be a problem */ | |
cf8280ee JB |
1995 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
1996 | adapter->link_check_timeout = jiffies; | |
9a799d71 AK |
1997 | mod_timer(&adapter->watchdog_timer, jiffies); |
1998 | return 0; | |
1999 | } | |
2000 | ||
d4f80882 AV |
2001 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
2002 | { | |
2003 | WARN_ON(in_interrupt()); | |
2004 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) | |
2005 | msleep(1); | |
2006 | ixgbe_down(adapter); | |
2007 | ixgbe_up(adapter); | |
2008 | clear_bit(__IXGBE_RESETTING, &adapter->state); | |
2009 | } | |
2010 | ||
9a799d71 AK |
2011 | int ixgbe_up(struct ixgbe_adapter *adapter) |
2012 | { | |
2013 | /* hardware has been reset, we need to reload some things */ | |
2014 | ixgbe_configure(adapter); | |
2015 | ||
2016 | return ixgbe_up_complete(adapter); | |
2017 | } | |
2018 | ||
2019 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
2020 | { | |
c44ade9e JB |
2021 | struct ixgbe_hw *hw = &adapter->hw; |
2022 | if (hw->mac.ops.init_hw(hw)) | |
2023 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); | |
9a799d71 AK |
2024 | |
2025 | /* reprogram the RAR[0] in case user changed it. */ | |
c44ade9e | 2026 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
2027 | |
2028 | } | |
2029 | ||
2030 | #ifdef CONFIG_PM | |
2031 | static int ixgbe_resume(struct pci_dev *pdev) | |
2032 | { | |
2033 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2034 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
021230d4 | 2035 | u32 err; |
9a799d71 AK |
2036 | |
2037 | pci_set_power_state(pdev, PCI_D0); | |
2038 | pci_restore_state(pdev); | |
2039 | err = pci_enable_device(pdev); | |
2040 | if (err) { | |
2041 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " \ | |
2042 | "suspend\n"); | |
2043 | return err; | |
2044 | } | |
2045 | pci_set_master(pdev); | |
2046 | ||
2047 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2048 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2049 | ||
2050 | if (netif_running(netdev)) { | |
021230d4 | 2051 | err = ixgbe_request_irq(adapter); |
9a799d71 AK |
2052 | if (err) |
2053 | return err; | |
2054 | } | |
2055 | ||
2056 | ixgbe_reset(adapter); | |
2057 | ||
2058 | if (netif_running(netdev)) | |
2059 | ixgbe_up(adapter); | |
2060 | ||
2061 | netif_device_attach(netdev); | |
2062 | ||
2063 | return 0; | |
2064 | } | |
2065 | #endif | |
2066 | ||
2067 | /** | |
2068 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
2069 | * @adapter: board private structure | |
2070 | * @rx_ring: ring to free buffers from | |
2071 | **/ | |
2072 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
2073 | struct ixgbe_ring *rx_ring) | |
2074 | { | |
2075 | struct pci_dev *pdev = adapter->pdev; | |
2076 | unsigned long size; | |
2077 | unsigned int i; | |
2078 | ||
2079 | /* Free all the Rx ring sk_buffs */ | |
2080 | ||
2081 | for (i = 0; i < rx_ring->count; i++) { | |
2082 | struct ixgbe_rx_buffer *rx_buffer_info; | |
2083 | ||
2084 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
2085 | if (rx_buffer_info->dma) { | |
2086 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
7c6e0a43 | 2087 | rx_ring->rx_buf_len, |
9a799d71 AK |
2088 | PCI_DMA_FROMDEVICE); |
2089 | rx_buffer_info->dma = 0; | |
2090 | } | |
2091 | if (rx_buffer_info->skb) { | |
2092 | dev_kfree_skb(rx_buffer_info->skb); | |
2093 | rx_buffer_info->skb = NULL; | |
2094 | } | |
2095 | if (!rx_buffer_info->page) | |
2096 | continue; | |
762f4c57 JB |
2097 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, |
2098 | PCI_DMA_FROMDEVICE); | |
9a799d71 | 2099 | rx_buffer_info->page_dma = 0; |
9a799d71 AK |
2100 | put_page(rx_buffer_info->page); |
2101 | rx_buffer_info->page = NULL; | |
762f4c57 | 2102 | rx_buffer_info->page_offset = 0; |
9a799d71 AK |
2103 | } |
2104 | ||
2105 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
2106 | memset(rx_ring->rx_buffer_info, 0, size); | |
2107 | ||
2108 | /* Zero out the descriptor ring */ | |
2109 | memset(rx_ring->desc, 0, rx_ring->size); | |
2110 | ||
2111 | rx_ring->next_to_clean = 0; | |
2112 | rx_ring->next_to_use = 0; | |
2113 | ||
2114 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
2115 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
2116 | } | |
2117 | ||
2118 | /** | |
2119 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
2120 | * @adapter: board private structure | |
2121 | * @tx_ring: ring to be cleaned | |
2122 | **/ | |
2123 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
2124 | struct ixgbe_ring *tx_ring) | |
2125 | { | |
2126 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2127 | unsigned long size; | |
2128 | unsigned int i; | |
2129 | ||
2130 | /* Free all the Tx ring sk_buffs */ | |
2131 | ||
2132 | for (i = 0; i < tx_ring->count; i++) { | |
2133 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2134 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
2135 | } | |
2136 | ||
2137 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
2138 | memset(tx_ring->tx_buffer_info, 0, size); | |
2139 | ||
2140 | /* Zero out the descriptor ring */ | |
2141 | memset(tx_ring->desc, 0, tx_ring->size); | |
2142 | ||
2143 | tx_ring->next_to_use = 0; | |
2144 | tx_ring->next_to_clean = 0; | |
2145 | ||
2146 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2147 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2148 | } | |
2149 | ||
2150 | /** | |
021230d4 | 2151 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues |
9a799d71 AK |
2152 | * @adapter: board private structure |
2153 | **/ | |
021230d4 | 2154 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2155 | { |
2156 | int i; | |
2157 | ||
021230d4 AV |
2158 | for (i = 0; i < adapter->num_rx_queues; i++) |
2159 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
9a799d71 AK |
2160 | } |
2161 | ||
2162 | /** | |
021230d4 | 2163 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues |
9a799d71 AK |
2164 | * @adapter: board private structure |
2165 | **/ | |
021230d4 | 2166 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2167 | { |
2168 | int i; | |
2169 | ||
021230d4 AV |
2170 | for (i = 0; i < adapter->num_tx_queues; i++) |
2171 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
9a799d71 AK |
2172 | } |
2173 | ||
2174 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
2175 | { | |
2176 | struct net_device *netdev = adapter->netdev; | |
7f821875 | 2177 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 | 2178 | u32 rxctrl; |
7f821875 JB |
2179 | u32 txdctl; |
2180 | int i, j; | |
9a799d71 AK |
2181 | |
2182 | /* signal that we are down to the interrupt handler */ | |
2183 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2184 | ||
2185 | /* disable receives */ | |
7f821875 JB |
2186 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
2187 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
9a799d71 AK |
2188 | |
2189 | netif_tx_disable(netdev); | |
2190 | ||
7f821875 | 2191 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
2192 | msleep(10); |
2193 | ||
7f821875 JB |
2194 | netif_tx_stop_all_queues(netdev); |
2195 | ||
9a799d71 AK |
2196 | ixgbe_irq_disable(adapter); |
2197 | ||
021230d4 | 2198 | ixgbe_napi_disable_all(adapter); |
7f821875 | 2199 | |
9a799d71 | 2200 | del_timer_sync(&adapter->watchdog_timer); |
cf8280ee | 2201 | cancel_work_sync(&adapter->watchdog_task); |
9a799d71 | 2202 | |
7f821875 JB |
2203 | /* disable transmits in the hardware now that interrupts are off */ |
2204 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2205 | j = adapter->tx_ring[i].reg_idx; | |
2206 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
2207 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), | |
2208 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); | |
2209 | } | |
2210 | ||
9a799d71 | 2211 | netif_carrier_off(netdev); |
9a799d71 | 2212 | |
a1f96ee7 | 2213 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
96b0e0f6 JB |
2214 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2215 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
2216 | dca_remove_requester(&adapter->pdev->dev); | |
2217 | } | |
2218 | ||
2219 | #endif | |
6f4a0e45 PL |
2220 | if (!pci_channel_offline(adapter->pdev)) |
2221 | ixgbe_reset(adapter); | |
9a799d71 AK |
2222 | ixgbe_clean_all_tx_rings(adapter); |
2223 | ixgbe_clean_all_rx_rings(adapter); | |
2224 | ||
a1f96ee7 | 2225 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
96b0e0f6 JB |
2226 | /* since we reset the hardware DCA settings were cleared */ |
2227 | if (dca_add_requester(&adapter->pdev->dev) == 0) { | |
2228 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; | |
2229 | /* always use CB2 mode, difference is masked | |
2230 | * in the CB driver */ | |
7f821875 | 2231 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); |
96b0e0f6 JB |
2232 | ixgbe_setup_dca(adapter); |
2233 | } | |
2234 | #endif | |
9a799d71 AK |
2235 | } |
2236 | ||
2237 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
2238 | { | |
2239 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2240 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2241 | #ifdef CONFIG_PM | |
2242 | int retval = 0; | |
2243 | #endif | |
2244 | ||
2245 | netif_device_detach(netdev); | |
2246 | ||
2247 | if (netif_running(netdev)) { | |
2248 | ixgbe_down(adapter); | |
2249 | ixgbe_free_irq(adapter); | |
2250 | } | |
2251 | ||
2252 | #ifdef CONFIG_PM | |
2253 | retval = pci_save_state(pdev); | |
2254 | if (retval) | |
2255 | return retval; | |
2256 | #endif | |
2257 | ||
2258 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2259 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2260 | ||
5eba3699 AV |
2261 | ixgbe_release_hw_control(adapter); |
2262 | ||
9a799d71 AK |
2263 | pci_disable_device(pdev); |
2264 | ||
2265 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2266 | ||
2267 | return 0; | |
2268 | } | |
2269 | ||
2270 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
2271 | { | |
2272 | ixgbe_suspend(pdev, PMSG_SUSPEND); | |
2273 | } | |
2274 | ||
2275 | /** | |
021230d4 AV |
2276 | * ixgbe_poll - NAPI Rx polling callback |
2277 | * @napi: structure for representing this polling device | |
2278 | * @budget: how many packets driver is allowed to clean | |
2279 | * | |
2280 | * This function is used for legacy and MSI, NAPI mode | |
9a799d71 | 2281 | **/ |
021230d4 | 2282 | static int ixgbe_poll(struct napi_struct *napi, int budget) |
9a799d71 | 2283 | { |
021230d4 AV |
2284 | struct ixgbe_q_vector *q_vector = container_of(napi, |
2285 | struct ixgbe_q_vector, napi); | |
2286 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
d2c7ddd6 | 2287 | int tx_cleaned = 0, work_done = 0; |
9a799d71 | 2288 | |
a1f96ee7 | 2289 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
2290 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2291 | ixgbe_update_tx_dca(adapter, adapter->tx_ring); | |
2292 | ixgbe_update_rx_dca(adapter, adapter->rx_ring); | |
2293 | } | |
2294 | #endif | |
2295 | ||
d2c7ddd6 | 2296 | tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
021230d4 | 2297 | ixgbe_clean_rx_irq(adapter, adapter->rx_ring, &work_done, budget); |
9a799d71 | 2298 | |
d2c7ddd6 DM |
2299 | if (tx_cleaned) |
2300 | work_done = budget; | |
2301 | ||
53e52c72 DM |
2302 | /* If budget not fully consumed, exit the polling mode */ |
2303 | if (work_done < budget) { | |
021230d4 | 2304 | netif_rx_complete(adapter->netdev, napi); |
30efa5a3 | 2305 | if (adapter->itr_setting & 3) |
f494e8fa | 2306 | ixgbe_set_itr(adapter); |
d4f80882 AV |
2307 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
2308 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
2309 | } |
2310 | ||
2311 | return work_done; | |
2312 | } | |
2313 | ||
2314 | /** | |
2315 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
2316 | * @netdev: network interface device structure | |
2317 | **/ | |
2318 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
2319 | { | |
2320 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2321 | ||
2322 | /* Do the reset outside of interrupt context */ | |
2323 | schedule_work(&adapter->reset_task); | |
2324 | } | |
2325 | ||
2326 | static void ixgbe_reset_task(struct work_struct *work) | |
2327 | { | |
2328 | struct ixgbe_adapter *adapter; | |
2329 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
2330 | ||
2331 | adapter->tx_timeout_count++; | |
2332 | ||
d4f80882 | 2333 | ixgbe_reinit_locked(adapter); |
9a799d71 AK |
2334 | } |
2335 | ||
021230d4 AV |
2336 | static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter, |
2337 | int vectors) | |
2338 | { | |
2339 | int err, vector_threshold; | |
2340 | ||
2341 | /* We'll want at least 3 (vector_threshold): | |
2342 | * 1) TxQ[0] Cleanup | |
2343 | * 2) RxQ[0] Cleanup | |
2344 | * 3) Other (Link Status Change, etc.) | |
2345 | * 4) TCP Timer (optional) | |
2346 | */ | |
2347 | vector_threshold = MIN_MSIX_COUNT; | |
2348 | ||
2349 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
2350 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
2351 | * Right now, we simply care about how many we'll get; we'll | |
2352 | * set them up later while requesting irq's. | |
2353 | */ | |
2354 | while (vectors >= vector_threshold) { | |
2355 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
2356 | vectors); | |
2357 | if (!err) /* Success in acquiring all requested vectors. */ | |
2358 | break; | |
2359 | else if (err < 0) | |
2360 | vectors = 0; /* Nasty failure, quit now */ | |
2361 | else /* err == number of vectors we should try again with */ | |
2362 | vectors = err; | |
2363 | } | |
2364 | ||
2365 | if (vectors < vector_threshold) { | |
2366 | /* Can't allocate enough MSI-X interrupts? Oh well. | |
2367 | * This just means we'll go with either a single MSI | |
2368 | * vector or fall back to legacy interrupts. | |
2369 | */ | |
2370 | DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n"); | |
2371 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
2372 | kfree(adapter->msix_entries); | |
2373 | adapter->msix_entries = NULL; | |
2374 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; | |
2375 | adapter->num_tx_queues = 1; | |
2376 | adapter->num_rx_queues = 1; | |
2377 | } else { | |
2378 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */ | |
2379 | adapter->num_msix_vectors = vectors; | |
2380 | } | |
2381 | } | |
2382 | ||
2383 | static void __devinit ixgbe_set_num_queues(struct ixgbe_adapter *adapter) | |
2384 | { | |
2385 | int nrq, ntq; | |
2386 | int feature_mask = 0, rss_i, rss_m; | |
2387 | ||
2388 | /* Number of supported queues */ | |
2389 | switch (adapter->hw.mac.type) { | |
2390 | case ixgbe_mac_82598EB: | |
2391 | rss_i = adapter->ring_feature[RING_F_RSS].indices; | |
2392 | rss_m = 0; | |
2393 | feature_mask |= IXGBE_FLAG_RSS_ENABLED; | |
2394 | ||
2395 | switch (adapter->flags & feature_mask) { | |
2396 | case (IXGBE_FLAG_RSS_ENABLED): | |
2397 | rss_m = 0xF; | |
2398 | nrq = rss_i; | |
30eba97a | 2399 | ntq = rss_i; |
021230d4 AV |
2400 | break; |
2401 | case 0: | |
2402 | default: | |
2403 | rss_i = 0; | |
2404 | rss_m = 0; | |
2405 | nrq = 1; | |
2406 | ntq = 1; | |
2407 | break; | |
2408 | } | |
2409 | ||
2410 | adapter->ring_feature[RING_F_RSS].indices = rss_i; | |
2411 | adapter->ring_feature[RING_F_RSS].mask = rss_m; | |
2412 | break; | |
2413 | default: | |
2414 | nrq = 1; | |
2415 | ntq = 1; | |
2416 | break; | |
2417 | } | |
2418 | ||
2419 | adapter->num_rx_queues = nrq; | |
2420 | adapter->num_tx_queues = ntq; | |
2421 | } | |
2422 | ||
2423 | /** | |
2424 | * ixgbe_cache_ring_register - Descriptor ring to register mapping | |
2425 | * @adapter: board private structure to initialize | |
2426 | * | |
2427 | * Once we know the feature-set enabled for the device, we'll cache | |
2428 | * the register offset the descriptor ring is assigned to. | |
2429 | **/ | |
2430 | static void __devinit ixgbe_cache_ring_register(struct ixgbe_adapter *adapter) | |
2431 | { | |
2432 | /* TODO: Remove all uses of the indices in the cases where multiple | |
2433 | * features are OR'd together, if the feature set makes sense. | |
2434 | */ | |
2435 | int feature_mask = 0, rss_i; | |
2436 | int i, txr_idx, rxr_idx; | |
2437 | ||
2438 | /* Number of supported queues */ | |
2439 | switch (adapter->hw.mac.type) { | |
2440 | case ixgbe_mac_82598EB: | |
2441 | rss_i = adapter->ring_feature[RING_F_RSS].indices; | |
2442 | txr_idx = 0; | |
2443 | rxr_idx = 0; | |
2444 | feature_mask |= IXGBE_FLAG_RSS_ENABLED; | |
2445 | switch (adapter->flags & feature_mask) { | |
2446 | case (IXGBE_FLAG_RSS_ENABLED): | |
2447 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2448 | adapter->rx_ring[i].reg_idx = i; | |
2449 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2450 | adapter->tx_ring[i].reg_idx = i; | |
2451 | break; | |
2452 | case 0: | |
2453 | default: | |
2454 | break; | |
2455 | } | |
2456 | break; | |
2457 | default: | |
2458 | break; | |
2459 | } | |
2460 | } | |
2461 | ||
9a799d71 AK |
2462 | /** |
2463 | * ixgbe_alloc_queues - Allocate memory for all rings | |
2464 | * @adapter: board private structure to initialize | |
2465 | * | |
2466 | * We allocate one ring per queue at run-time since we don't know the | |
2467 | * number of queues at compile-time. The polling_netdev array is | |
2468 | * intended for Multiqueue, but should work fine with a single queue. | |
2469 | **/ | |
2470 | static int __devinit ixgbe_alloc_queues(struct ixgbe_adapter *adapter) | |
2471 | { | |
2472 | int i; | |
2473 | ||
2474 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
2475 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
2476 | if (!adapter->tx_ring) | |
021230d4 | 2477 | goto err_tx_ring_allocation; |
9a799d71 AK |
2478 | |
2479 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
2480 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
021230d4 AV |
2481 | if (!adapter->rx_ring) |
2482 | goto err_rx_ring_allocation; | |
9a799d71 | 2483 | |
021230d4 AV |
2484 | for (i = 0; i < adapter->num_tx_queues; i++) { |
2485 | adapter->tx_ring[i].count = IXGBE_DEFAULT_TXD; | |
2486 | adapter->tx_ring[i].queue_index = i; | |
2487 | } | |
9a799d71 | 2488 | for (i = 0; i < adapter->num_rx_queues; i++) { |
9a799d71 | 2489 | adapter->rx_ring[i].count = IXGBE_DEFAULT_RXD; |
021230d4 AV |
2490 | adapter->rx_ring[i].queue_index = i; |
2491 | } | |
2492 | ||
2493 | ixgbe_cache_ring_register(adapter); | |
2494 | ||
2495 | return 0; | |
2496 | ||
2497 | err_rx_ring_allocation: | |
2498 | kfree(adapter->tx_ring); | |
2499 | err_tx_ring_allocation: | |
2500 | return -ENOMEM; | |
2501 | } | |
2502 | ||
2503 | /** | |
2504 | * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported | |
2505 | * @adapter: board private structure to initialize | |
2506 | * | |
2507 | * Attempt to configure the interrupts using the best available | |
2508 | * capabilities of the hardware and the kernel. | |
2509 | **/ | |
2510 | static int __devinit ixgbe_set_interrupt_capability(struct ixgbe_adapter | |
2511 | *adapter) | |
2512 | { | |
2513 | int err = 0; | |
2514 | int vector, v_budget; | |
2515 | ||
2516 | /* | |
2517 | * It's easy to be greedy for MSI-X vectors, but it really | |
2518 | * doesn't do us much good if we have a lot more vectors | |
2519 | * than CPU's. So let's be conservative and only ask for | |
2520 | * (roughly) twice the number of vectors as there are CPU's. | |
2521 | */ | |
2522 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, | |
2523 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; | |
2524 | ||
2525 | /* | |
2526 | * At the same time, hardware can only support a maximum of | |
2527 | * MAX_MSIX_COUNT vectors. With features such as RSS and VMDq, | |
2528 | * we can easily reach upwards of 64 Rx descriptor queues and | |
2529 | * 32 Tx queues. Thus, we cap it off in those rare cases where | |
2530 | * the cpu count also exceeds our vector limit. | |
2531 | */ | |
2532 | v_budget = min(v_budget, MAX_MSIX_COUNT); | |
2533 | ||
2534 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
2535 | * mean we disable MSI-X capabilities of the adapter. */ | |
2536 | adapter->msix_entries = kcalloc(v_budget, | |
2537 | sizeof(struct msix_entry), GFP_KERNEL); | |
2538 | if (!adapter->msix_entries) { | |
2539 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; | |
2540 | ixgbe_set_num_queues(adapter); | |
2541 | kfree(adapter->tx_ring); | |
2542 | kfree(adapter->rx_ring); | |
2543 | err = ixgbe_alloc_queues(adapter); | |
2544 | if (err) { | |
2545 | DPRINTK(PROBE, ERR, "Unable to allocate memory " | |
2546 | "for queues\n"); | |
2547 | goto out; | |
2548 | } | |
2549 | ||
2550 | goto try_msi; | |
2551 | } | |
2552 | ||
2553 | for (vector = 0; vector < v_budget; vector++) | |
2554 | adapter->msix_entries[vector].entry = vector; | |
2555 | ||
2556 | ixgbe_acquire_msix_vectors(adapter, v_budget); | |
2557 | ||
2558 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
2559 | goto out; | |
2560 | ||
2561 | try_msi: | |
2562 | err = pci_enable_msi(adapter->pdev); | |
2563 | if (!err) { | |
2564 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
2565 | } else { | |
2566 | DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, " | |
2567 | "falling back to legacy. Error: %d\n", err); | |
2568 | /* reset err */ | |
2569 | err = 0; | |
2570 | } | |
2571 | ||
2572 | out: | |
30eba97a | 2573 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
fd2ea0a7 | 2574 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
021230d4 AV |
2575 | |
2576 | return err; | |
2577 | } | |
2578 | ||
2579 | static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter) | |
2580 | { | |
2581 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
2582 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
2583 | pci_disable_msix(adapter->pdev); | |
2584 | kfree(adapter->msix_entries); | |
2585 | adapter->msix_entries = NULL; | |
2586 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
2587 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
2588 | pci_disable_msi(adapter->pdev); | |
2589 | } | |
2590 | return; | |
2591 | } | |
2592 | ||
2593 | /** | |
2594 | * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme | |
2595 | * @adapter: board private structure to initialize | |
2596 | * | |
2597 | * We determine which interrupt scheme to use based on... | |
2598 | * - Kernel support (MSI, MSI-X) | |
2599 | * - which can be user-defined (via MODULE_PARAM) | |
2600 | * - Hardware queue count (num_*_queues) | |
2601 | * - defined by miscellaneous hardware support/features (RSS, etc.) | |
2602 | **/ | |
2603 | static int __devinit ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter) | |
2604 | { | |
2605 | int err; | |
2606 | ||
2607 | /* Number of supported queues */ | |
2608 | ixgbe_set_num_queues(adapter); | |
2609 | ||
2610 | err = ixgbe_alloc_queues(adapter); | |
2611 | if (err) { | |
2612 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
2613 | goto err_alloc_queues; | |
2614 | } | |
2615 | ||
2616 | err = ixgbe_set_interrupt_capability(adapter); | |
2617 | if (err) { | |
2618 | DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n"); | |
2619 | goto err_set_interrupt; | |
9a799d71 AK |
2620 | } |
2621 | ||
021230d4 AV |
2622 | DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, " |
2623 | "Tx Queue count = %u\n", | |
2624 | (adapter->num_rx_queues > 1) ? "Enabled" : | |
2625 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); | |
2626 | ||
2627 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2628 | ||
9a799d71 | 2629 | return 0; |
021230d4 AV |
2630 | |
2631 | err_set_interrupt: | |
2632 | kfree(adapter->tx_ring); | |
2633 | kfree(adapter->rx_ring); | |
2634 | err_alloc_queues: | |
2635 | return err; | |
9a799d71 AK |
2636 | } |
2637 | ||
2638 | /** | |
2639 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
2640 | * @adapter: board private structure to initialize | |
2641 | * | |
2642 | * ixgbe_sw_init initializes the Adapter private data structure. | |
2643 | * Fields are initialized based on PCI device information and | |
2644 | * OS network device settings (MTU size). | |
2645 | **/ | |
2646 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
2647 | { | |
2648 | struct ixgbe_hw *hw = &adapter->hw; | |
2649 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 AV |
2650 | unsigned int rss; |
2651 | ||
c44ade9e JB |
2652 | /* PCI config space info */ |
2653 | ||
2654 | hw->vendor_id = pdev->vendor; | |
2655 | hw->device_id = pdev->device; | |
2656 | hw->revision_id = pdev->revision; | |
2657 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2658 | hw->subsystem_device_id = pdev->subsystem_device; | |
2659 | ||
021230d4 AV |
2660 | /* Set capability flags */ |
2661 | rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus()); | |
2662 | adapter->ring_feature[RING_F_RSS].indices = rss; | |
2663 | adapter->flags |= IXGBE_FLAG_RSS_ENABLED; | |
9a799d71 AK |
2664 | |
2665 | /* default flow control settings */ | |
2b9ade93 JB |
2666 | hw->fc.original_type = ixgbe_fc_none; |
2667 | hw->fc.type = ixgbe_fc_none; | |
2668 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; | |
2669 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
2670 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
2671 | hw->fc.send_xon = true; | |
9a799d71 | 2672 | |
021230d4 | 2673 | /* select 10G link by default */ |
9a799d71 | 2674 | hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN; |
9a799d71 | 2675 | |
30efa5a3 JB |
2676 | /* enable itr by default in dynamic mode */ |
2677 | adapter->itr_setting = 1; | |
2678 | adapter->eitr_param = 20000; | |
2679 | ||
2680 | /* set defaults for eitr in MegaBytes */ | |
2681 | adapter->eitr_low = 10; | |
2682 | adapter->eitr_high = 20; | |
2683 | ||
2684 | /* set default ring sizes */ | |
2685 | adapter->tx_ring_count = IXGBE_DEFAULT_TXD; | |
2686 | adapter->rx_ring_count = IXGBE_DEFAULT_RXD; | |
2687 | ||
9a799d71 | 2688 | /* initialize eeprom parameters */ |
c44ade9e | 2689 | if (ixgbe_init_eeprom_params_generic(hw)) { |
9a799d71 AK |
2690 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); |
2691 | return -EIO; | |
2692 | } | |
2693 | ||
021230d4 | 2694 | /* enable rx csum by default */ |
9a799d71 AK |
2695 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; |
2696 | ||
9a799d71 AK |
2697 | set_bit(__IXGBE_DOWN, &adapter->state); |
2698 | ||
2699 | return 0; | |
2700 | } | |
2701 | ||
2702 | /** | |
2703 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
2704 | * @adapter: board private structure | |
3a581073 | 2705 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
2706 | * |
2707 | * Return 0 on success, negative on failure | |
2708 | **/ | |
2709 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
e01c31a5 | 2710 | struct ixgbe_ring *tx_ring) |
9a799d71 AK |
2711 | { |
2712 | struct pci_dev *pdev = adapter->pdev; | |
2713 | int size; | |
2714 | ||
3a581073 JB |
2715 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; |
2716 | tx_ring->tx_buffer_info = vmalloc(size); | |
e01c31a5 JB |
2717 | if (!tx_ring->tx_buffer_info) |
2718 | goto err; | |
3a581073 | 2719 | memset(tx_ring->tx_buffer_info, 0, size); |
9a799d71 AK |
2720 | |
2721 | /* round up to nearest 4K */ | |
e01c31a5 JB |
2722 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc) + |
2723 | sizeof(u32); | |
3a581073 | 2724 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
9a799d71 | 2725 | |
3a581073 JB |
2726 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
2727 | &tx_ring->dma); | |
e01c31a5 JB |
2728 | if (!tx_ring->desc) |
2729 | goto err; | |
9a799d71 | 2730 | |
3a581073 JB |
2731 | tx_ring->next_to_use = 0; |
2732 | tx_ring->next_to_clean = 0; | |
2733 | tx_ring->work_limit = tx_ring->count; | |
9a799d71 | 2734 | return 0; |
e01c31a5 JB |
2735 | |
2736 | err: | |
2737 | vfree(tx_ring->tx_buffer_info); | |
2738 | tx_ring->tx_buffer_info = NULL; | |
2739 | DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit " | |
2740 | "descriptor ring\n"); | |
2741 | return -ENOMEM; | |
9a799d71 AK |
2742 | } |
2743 | ||
2744 | /** | |
2745 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
2746 | * @adapter: board private structure | |
3a581073 | 2747 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
2748 | * |
2749 | * Returns 0 on success, negative on failure | |
2750 | **/ | |
2751 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
3a581073 | 2752 | struct ixgbe_ring *rx_ring) |
9a799d71 AK |
2753 | { |
2754 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 | 2755 | int size; |
9a799d71 | 2756 | |
177db6ff | 2757 | size = sizeof(struct net_lro_desc) * IXGBE_MAX_LRO_DESCRIPTORS; |
3a581073 JB |
2758 | rx_ring->lro_mgr.lro_arr = vmalloc(size); |
2759 | if (!rx_ring->lro_mgr.lro_arr) | |
177db6ff | 2760 | return -ENOMEM; |
3a581073 | 2761 | memset(rx_ring->lro_mgr.lro_arr, 0, size); |
177db6ff | 2762 | |
3a581073 JB |
2763 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; |
2764 | rx_ring->rx_buffer_info = vmalloc(size); | |
2765 | if (!rx_ring->rx_buffer_info) { | |
9a799d71 AK |
2766 | DPRINTK(PROBE, ERR, |
2767 | "vmalloc allocation failed for the rx desc ring\n"); | |
177db6ff | 2768 | goto alloc_failed; |
9a799d71 | 2769 | } |
3a581073 | 2770 | memset(rx_ring->rx_buffer_info, 0, size); |
9a799d71 | 2771 | |
9a799d71 | 2772 | /* Round up to nearest 4K */ |
3a581073 JB |
2773 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); |
2774 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
9a799d71 | 2775 | |
3a581073 | 2776 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma); |
9a799d71 | 2777 | |
3a581073 | 2778 | if (!rx_ring->desc) { |
9a799d71 AK |
2779 | DPRINTK(PROBE, ERR, |
2780 | "Memory allocation failed for the rx desc ring\n"); | |
3a581073 | 2781 | vfree(rx_ring->rx_buffer_info); |
177db6ff | 2782 | goto alloc_failed; |
9a799d71 AK |
2783 | } |
2784 | ||
3a581073 JB |
2785 | rx_ring->next_to_clean = 0; |
2786 | rx_ring->next_to_use = 0; | |
9a799d71 AK |
2787 | |
2788 | return 0; | |
177db6ff MC |
2789 | |
2790 | alloc_failed: | |
3a581073 JB |
2791 | vfree(rx_ring->lro_mgr.lro_arr); |
2792 | rx_ring->lro_mgr.lro_arr = NULL; | |
177db6ff | 2793 | return -ENOMEM; |
9a799d71 AK |
2794 | } |
2795 | ||
2796 | /** | |
2797 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
2798 | * @adapter: board private structure | |
2799 | * @tx_ring: Tx descriptor ring for a specific queue | |
2800 | * | |
2801 | * Free all transmit software resources | |
2802 | **/ | |
c431f97e JB |
2803 | void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, |
2804 | struct ixgbe_ring *tx_ring) | |
9a799d71 AK |
2805 | { |
2806 | struct pci_dev *pdev = adapter->pdev; | |
2807 | ||
2808 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
2809 | ||
2810 | vfree(tx_ring->tx_buffer_info); | |
2811 | tx_ring->tx_buffer_info = NULL; | |
2812 | ||
2813 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
2814 | ||
2815 | tx_ring->desc = NULL; | |
2816 | } | |
2817 | ||
2818 | /** | |
2819 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
2820 | * @adapter: board private structure | |
2821 | * | |
2822 | * Free all transmit software resources | |
2823 | **/ | |
2824 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
2825 | { | |
2826 | int i; | |
2827 | ||
2828 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2829 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
2830 | } | |
2831 | ||
2832 | /** | |
c431f97e | 2833 | * ixgbe_ree_rx_resources - Free Rx Resources |
9a799d71 AK |
2834 | * @adapter: board private structure |
2835 | * @rx_ring: ring to clean the resources from | |
2836 | * | |
2837 | * Free all receive software resources | |
2838 | **/ | |
c431f97e JB |
2839 | void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, |
2840 | struct ixgbe_ring *rx_ring) | |
9a799d71 AK |
2841 | { |
2842 | struct pci_dev *pdev = adapter->pdev; | |
2843 | ||
177db6ff MC |
2844 | vfree(rx_ring->lro_mgr.lro_arr); |
2845 | rx_ring->lro_mgr.lro_arr = NULL; | |
2846 | ||
9a799d71 AK |
2847 | ixgbe_clean_rx_ring(adapter, rx_ring); |
2848 | ||
2849 | vfree(rx_ring->rx_buffer_info); | |
2850 | rx_ring->rx_buffer_info = NULL; | |
2851 | ||
2852 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2853 | ||
2854 | rx_ring->desc = NULL; | |
2855 | } | |
2856 | ||
2857 | /** | |
2858 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
2859 | * @adapter: board private structure | |
2860 | * | |
2861 | * Free all receive software resources | |
2862 | **/ | |
2863 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
2864 | { | |
2865 | int i; | |
2866 | ||
2867 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2868 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
2869 | } | |
2870 | ||
2871 | /** | |
021230d4 | 2872 | * ixgbe_setup_all_tx_resources - allocate all queues Tx resources |
9a799d71 AK |
2873 | * @adapter: board private structure |
2874 | * | |
2875 | * If this function returns with an error, then it's possible one or | |
2876 | * more of the rings is populated (while the rest are not). It is the | |
2877 | * callers duty to clean those orphaned rings. | |
2878 | * | |
2879 | * Return 0 on success, negative on failure | |
2880 | **/ | |
2881 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
2882 | { | |
2883 | int i, err = 0; | |
2884 | ||
2885 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2886 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
2887 | if (err) { | |
2888 | DPRINTK(PROBE, ERR, | |
2889 | "Allocation for Tx Queue %u failed\n", i); | |
2890 | break; | |
2891 | } | |
2892 | } | |
2893 | ||
2894 | return err; | |
2895 | } | |
2896 | ||
2897 | /** | |
021230d4 | 2898 | * ixgbe_setup_all_rx_resources - allocate all queues Rx resources |
9a799d71 AK |
2899 | * @adapter: board private structure |
2900 | * | |
2901 | * If this function returns with an error, then it's possible one or | |
2902 | * more of the rings is populated (while the rest are not). It is the | |
2903 | * callers duty to clean those orphaned rings. | |
2904 | * | |
2905 | * Return 0 on success, negative on failure | |
2906 | **/ | |
2907 | ||
2908 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
2909 | { | |
2910 | int i, err = 0; | |
2911 | ||
2912 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2913 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
2914 | if (err) { | |
2915 | DPRINTK(PROBE, ERR, | |
2916 | "Allocation for Rx Queue %u failed\n", i); | |
2917 | break; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | return err; | |
2922 | } | |
2923 | ||
2924 | /** | |
2925 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
2926 | * @netdev: network interface device structure | |
2927 | * @new_mtu: new value for maximum frame size | |
2928 | * | |
2929 | * Returns 0 on success, negative on failure | |
2930 | **/ | |
2931 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
2932 | { | |
2933 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2934 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2935 | ||
42c783c5 JB |
2936 | /* MTU < 68 is an error and causes problems on some kernels */ |
2937 | if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
9a799d71 AK |
2938 | return -EINVAL; |
2939 | ||
021230d4 AV |
2940 | DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n", |
2941 | netdev->mtu, new_mtu); | |
2942 | /* must set new MTU before calling down or up */ | |
9a799d71 AK |
2943 | netdev->mtu = new_mtu; |
2944 | ||
d4f80882 AV |
2945 | if (netif_running(netdev)) |
2946 | ixgbe_reinit_locked(adapter); | |
9a799d71 AK |
2947 | |
2948 | return 0; | |
2949 | } | |
2950 | ||
2951 | /** | |
2952 | * ixgbe_open - Called when a network interface is made active | |
2953 | * @netdev: network interface device structure | |
2954 | * | |
2955 | * Returns 0 on success, negative value on failure | |
2956 | * | |
2957 | * The open entry point is called when a network interface is made | |
2958 | * active by the system (IFF_UP). At this point all resources needed | |
2959 | * for transmit and receive operations are allocated, the interrupt | |
2960 | * handler is registered with the OS, the watchdog timer is started, | |
2961 | * and the stack is notified that the interface is ready. | |
2962 | **/ | |
2963 | static int ixgbe_open(struct net_device *netdev) | |
2964 | { | |
2965 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2966 | int err; | |
4bebfaa5 AK |
2967 | |
2968 | /* disallow open during test */ | |
2969 | if (test_bit(__IXGBE_TESTING, &adapter->state)) | |
2970 | return -EBUSY; | |
9a799d71 | 2971 | |
9a799d71 AK |
2972 | /* allocate transmit descriptors */ |
2973 | err = ixgbe_setup_all_tx_resources(adapter); | |
2974 | if (err) | |
2975 | goto err_setup_tx; | |
2976 | ||
9a799d71 AK |
2977 | /* allocate receive descriptors */ |
2978 | err = ixgbe_setup_all_rx_resources(adapter); | |
2979 | if (err) | |
2980 | goto err_setup_rx; | |
2981 | ||
2982 | ixgbe_configure(adapter); | |
2983 | ||
021230d4 | 2984 | err = ixgbe_request_irq(adapter); |
9a799d71 AK |
2985 | if (err) |
2986 | goto err_req_irq; | |
2987 | ||
9a799d71 AK |
2988 | err = ixgbe_up_complete(adapter); |
2989 | if (err) | |
2990 | goto err_up; | |
2991 | ||
d55b53ff JK |
2992 | netif_tx_start_all_queues(netdev); |
2993 | ||
9a799d71 AK |
2994 | return 0; |
2995 | ||
2996 | err_up: | |
5eba3699 | 2997 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2998 | ixgbe_free_irq(adapter); |
2999 | err_req_irq: | |
3000 | ixgbe_free_all_rx_resources(adapter); | |
3001 | err_setup_rx: | |
3002 | ixgbe_free_all_tx_resources(adapter); | |
3003 | err_setup_tx: | |
3004 | ixgbe_reset(adapter); | |
3005 | ||
3006 | return err; | |
3007 | } | |
3008 | ||
3009 | /** | |
3010 | * ixgbe_close - Disables a network interface | |
3011 | * @netdev: network interface device structure | |
3012 | * | |
3013 | * Returns 0, this is not allowed to fail | |
3014 | * | |
3015 | * The close entry point is called when an interface is de-activated | |
3016 | * by the OS. The hardware is still under the drivers control, but | |
3017 | * needs to be disabled. A global MAC reset is issued to stop the | |
3018 | * hardware, and all transmit and receive resources are freed. | |
3019 | **/ | |
3020 | static int ixgbe_close(struct net_device *netdev) | |
3021 | { | |
3022 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
9a799d71 AK |
3023 | |
3024 | ixgbe_down(adapter); | |
3025 | ixgbe_free_irq(adapter); | |
3026 | ||
3027 | ixgbe_free_all_tx_resources(adapter); | |
3028 | ixgbe_free_all_rx_resources(adapter); | |
3029 | ||
5eba3699 | 3030 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3031 | |
3032 | return 0; | |
3033 | } | |
3034 | ||
3035 | /** | |
3036 | * ixgbe_update_stats - Update the board statistics counters. | |
3037 | * @adapter: board private structure | |
3038 | **/ | |
3039 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
3040 | { | |
3041 | struct ixgbe_hw *hw = &adapter->hw; | |
6f11eef7 AV |
3042 | u64 total_mpc = 0; |
3043 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; | |
9a799d71 AK |
3044 | |
3045 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
6f11eef7 AV |
3046 | for (i = 0; i < 8; i++) { |
3047 | /* for packet buffers not used, the register should read 0 */ | |
3048 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
3049 | missed_rx += mpc; | |
3050 | adapter->stats.mpc[i] += mpc; | |
3051 | total_mpc += adapter->stats.mpc[i]; | |
3052 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
3053 | } | |
3054 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); | |
3055 | /* work around hardware counting issue */ | |
3056 | adapter->stats.gprc -= missed_rx; | |
3057 | ||
3058 | /* 82598 hardware only has a 32 bit counter in the high register */ | |
9a799d71 | 3059 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); |
6f11eef7 AV |
3060 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); |
3061 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
9a799d71 AK |
3062 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
3063 | adapter->stats.bprc += bprc; | |
3064 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
3065 | adapter->stats.mprc -= bprc; | |
3066 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); | |
3067 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
3068 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
3069 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
3070 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
3071 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
3072 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
9a799d71 AK |
3073 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
3074 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
9a799d71 | 3075 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); |
6f11eef7 AV |
3076 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
3077 | adapter->stats.lxontxc += lxon; | |
3078 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
3079 | adapter->stats.lxofftxc += lxoff; | |
9a799d71 AK |
3080 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3081 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
6f11eef7 AV |
3082 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
3083 | /* | |
3084 | * 82598 errata - tx of flow control packets is included in tx counters | |
3085 | */ | |
3086 | xon_off_tot = lxon + lxoff; | |
3087 | adapter->stats.gptc -= xon_off_tot; | |
3088 | adapter->stats.mptc -= xon_off_tot; | |
3089 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); | |
9a799d71 AK |
3090 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3091 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
3092 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
9a799d71 AK |
3093 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
3094 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
6f11eef7 | 3095 | adapter->stats.ptc64 -= xon_off_tot; |
9a799d71 AK |
3096 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
3097 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
3098 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
3099 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
3100 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
9a799d71 AK |
3101 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
3102 | ||
3103 | /* Fill out the OS statistics structure */ | |
9a799d71 AK |
3104 | adapter->net_stats.multicast = adapter->stats.mprc; |
3105 | ||
3106 | /* Rx Errors */ | |
3107 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
3108 | adapter->stats.rlec; | |
3109 | adapter->net_stats.rx_dropped = 0; | |
3110 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
3111 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
6f11eef7 | 3112 | adapter->net_stats.rx_missed_errors = total_mpc; |
9a799d71 AK |
3113 | } |
3114 | ||
3115 | /** | |
3116 | * ixgbe_watchdog - Timer Call-back | |
3117 | * @data: pointer to adapter cast into an unsigned long | |
3118 | **/ | |
3119 | static void ixgbe_watchdog(unsigned long data) | |
3120 | { | |
3121 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
cf8280ee JB |
3122 | struct ixgbe_hw *hw = &adapter->hw; |
3123 | ||
3124 | /* Do the watchdog outside of interrupt context due to the lovely | |
3125 | * delays that some of the newer hardware requires */ | |
3126 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
3127 | /* Cause software interrupt to ensure rx rings are cleaned */ | |
3128 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
3129 | u32 eics = | |
3130 | (1 << (adapter->num_msix_vectors - NON_Q_VECTORS)) - 1; | |
3131 | IXGBE_WRITE_REG(hw, IXGBE_EICS, eics); | |
3132 | } else { | |
3133 | /* For legacy and MSI interrupts don't set any bits that | |
3134 | * are enabled for EIAM, because this operation would | |
3135 | * set *both* EIMS and EICS for any bit in EIAM */ | |
3136 | IXGBE_WRITE_REG(hw, IXGBE_EICS, | |
3137 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); | |
3138 | } | |
3139 | /* Reset the timer */ | |
3140 | mod_timer(&adapter->watchdog_timer, | |
3141 | round_jiffies(jiffies + 2 * HZ)); | |
3142 | } | |
9a799d71 | 3143 | |
cf8280ee JB |
3144 | schedule_work(&adapter->watchdog_task); |
3145 | } | |
3146 | ||
3147 | /** | |
3148 | * ixgbe_watchdog_task - worker thread to bring link up | |
3149 | * @work: pointer to work_struct containing our data | |
3150 | **/ | |
3151 | static void ixgbe_watchdog_task(struct work_struct *work) | |
3152 | { | |
3153 | struct ixgbe_adapter *adapter = container_of(work, | |
3154 | struct ixgbe_adapter, | |
3155 | watchdog_task); | |
3156 | struct net_device *netdev = adapter->netdev; | |
3157 | struct ixgbe_hw *hw = &adapter->hw; | |
3158 | u32 link_speed = adapter->link_speed; | |
3159 | bool link_up = adapter->link_up; | |
3160 | ||
3161 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; | |
3162 | ||
3163 | if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) { | |
3164 | hw->mac.ops.check_link(hw, &link_speed, &link_up, false); | |
3165 | if (link_up || | |
3166 | time_after(jiffies, (adapter->link_check_timeout + | |
3167 | IXGBE_TRY_LINK_TIMEOUT))) { | |
3168 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); | |
3169 | adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; | |
3170 | } | |
3171 | adapter->link_up = link_up; | |
3172 | adapter->link_speed = link_speed; | |
3173 | } | |
9a799d71 AK |
3174 | |
3175 | if (link_up) { | |
3176 | if (!netif_carrier_ok(netdev)) { | |
cf8280ee JB |
3177 | u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); |
3178 | u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); | |
9a799d71 AK |
3179 | #define FLOW_RX (frctl & IXGBE_FCTRL_RFCE) |
3180 | #define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X) | |
3181 | DPRINTK(LINK, INFO, "NIC Link is Up %s, " | |
cf8280ee JB |
3182 | "Flow Control: %s\n", |
3183 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
3184 | "10 Gbps" : | |
3185 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
3186 | "1 Gbps" : "unknown speed")), | |
3187 | ((FLOW_RX && FLOW_TX) ? "RX/TX" : | |
3188 | (FLOW_RX ? "RX" : | |
3189 | (FLOW_TX ? "TX" : "None")))); | |
9a799d71 AK |
3190 | |
3191 | netif_carrier_on(netdev); | |
fd2ea0a7 | 3192 | netif_tx_wake_all_queues(netdev); |
9a799d71 AK |
3193 | } else { |
3194 | /* Force detection of hung controller */ | |
3195 | adapter->detect_tx_hung = true; | |
3196 | } | |
3197 | } else { | |
cf8280ee JB |
3198 | adapter->link_up = false; |
3199 | adapter->link_speed = 0; | |
9a799d71 AK |
3200 | if (netif_carrier_ok(netdev)) { |
3201 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
3202 | netif_carrier_off(netdev); | |
fd2ea0a7 | 3203 | netif_tx_stop_all_queues(netdev); |
9a799d71 AK |
3204 | } |
3205 | } | |
3206 | ||
3207 | ixgbe_update_stats(adapter); | |
cf8280ee | 3208 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; |
9a799d71 AK |
3209 | } |
3210 | ||
9a799d71 AK |
3211 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
3212 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, | |
3213 | u32 tx_flags, u8 *hdr_len) | |
3214 | { | |
3215 | struct ixgbe_adv_tx_context_desc *context_desc; | |
3216 | unsigned int i; | |
3217 | int err; | |
3218 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3219 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
3220 | u32 mss_l4len_idx = 0, l4len; | |
9a799d71 AK |
3221 | |
3222 | if (skb_is_gso(skb)) { | |
3223 | if (skb_header_cloned(skb)) { | |
3224 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3225 | if (err) | |
3226 | return err; | |
3227 | } | |
3228 | l4len = tcp_hdrlen(skb); | |
3229 | *hdr_len += l4len; | |
3230 | ||
8327d000 | 3231 | if (skb->protocol == htons(ETH_P_IP)) { |
9a799d71 AK |
3232 | struct iphdr *iph = ip_hdr(skb); |
3233 | iph->tot_len = 0; | |
3234 | iph->check = 0; | |
3235 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
3236 | iph->daddr, 0, | |
3237 | IPPROTO_TCP, | |
3238 | 0); | |
3239 | adapter->hw_tso_ctxt++; | |
3240 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
3241 | ipv6_hdr(skb)->payload_len = 0; | |
3242 | tcp_hdr(skb)->check = | |
3243 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
3244 | &ipv6_hdr(skb)->daddr, | |
3245 | 0, IPPROTO_TCP, 0); | |
3246 | adapter->hw_tso6_ctxt++; | |
3247 | } | |
3248 | ||
3249 | i = tx_ring->next_to_use; | |
3250 | ||
3251 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3252 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
3253 | ||
3254 | /* VLAN MACLEN IPLEN */ | |
3255 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3256 | vlan_macip_lens |= | |
3257 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
3258 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
3259 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
3260 | *hdr_len += skb_network_offset(skb); | |
3261 | vlan_macip_lens |= | |
3262 | (skb_transport_header(skb) - skb_network_header(skb)); | |
3263 | *hdr_len += | |
3264 | (skb_transport_header(skb) - skb_network_header(skb)); | |
3265 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
3266 | context_desc->seqnum_seed = 0; | |
3267 | ||
3268 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
3269 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
3270 | IXGBE_ADVTXD_DTYP_CTXT); | |
3271 | ||
8327d000 | 3272 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
3273 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
3274 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
3275 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
3276 | ||
3277 | /* MSS L4LEN IDX */ | |
3278 | mss_l4len_idx |= | |
3279 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
3280 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
4eeae6fd PW |
3281 | /* use index 1 for TSO */ |
3282 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
3283 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
3284 | ||
3285 | tx_buffer_info->time_stamp = jiffies; | |
3286 | tx_buffer_info->next_to_watch = i; | |
3287 | ||
3288 | i++; | |
3289 | if (i == tx_ring->count) | |
3290 | i = 0; | |
3291 | tx_ring->next_to_use = i; | |
3292 | ||
3293 | return true; | |
3294 | } | |
3295 | return false; | |
3296 | } | |
3297 | ||
3298 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
3299 | struct ixgbe_ring *tx_ring, | |
3300 | struct sk_buff *skb, u32 tx_flags) | |
3301 | { | |
3302 | struct ixgbe_adv_tx_context_desc *context_desc; | |
3303 | unsigned int i; | |
3304 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3305 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
3306 | ||
3307 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
3308 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
3309 | i = tx_ring->next_to_use; | |
3310 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3311 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
3312 | ||
3313 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3314 | vlan_macip_lens |= | |
3315 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
3316 | vlan_macip_lens |= (skb_network_offset(skb) << | |
3317 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
3318 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
3319 | vlan_macip_lens |= (skb_transport_header(skb) - | |
3320 | skb_network_header(skb)); | |
3321 | ||
3322 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
3323 | context_desc->seqnum_seed = 0; | |
3324 | ||
3325 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
3326 | IXGBE_ADVTXD_DTYP_CTXT); | |
3327 | ||
3328 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
41825d71 AK |
3329 | switch (skb->protocol) { |
3330 | case __constant_htons(ETH_P_IP): | |
9a799d71 | 3331 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
41825d71 AK |
3332 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
3333 | type_tucmd_mlhl |= | |
3334 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
3335 | break; | |
3336 | ||
3337 | case __constant_htons(ETH_P_IPV6): | |
3338 | /* XXX what about other V6 headers?? */ | |
3339 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
3340 | type_tucmd_mlhl |= | |
3341 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
3342 | break; | |
9a799d71 | 3343 | |
41825d71 AK |
3344 | default: |
3345 | if (unlikely(net_ratelimit())) { | |
3346 | DPRINTK(PROBE, WARNING, | |
3347 | "partial checksum but proto=%x!\n", | |
3348 | skb->protocol); | |
3349 | } | |
3350 | break; | |
3351 | } | |
9a799d71 AK |
3352 | } |
3353 | ||
3354 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
4eeae6fd | 3355 | /* use index zero for tx checksum offload */ |
9a799d71 AK |
3356 | context_desc->mss_l4len_idx = 0; |
3357 | ||
3358 | tx_buffer_info->time_stamp = jiffies; | |
3359 | tx_buffer_info->next_to_watch = i; | |
3360 | adapter->hw_csum_tx_good++; | |
3361 | i++; | |
3362 | if (i == tx_ring->count) | |
3363 | i = 0; | |
3364 | tx_ring->next_to_use = i; | |
3365 | ||
3366 | return true; | |
3367 | } | |
3368 | return false; | |
3369 | } | |
3370 | ||
3371 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
3372 | struct ixgbe_ring *tx_ring, | |
3373 | struct sk_buff *skb, unsigned int first) | |
3374 | { | |
3375 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3376 | unsigned int len = skb->len; | |
3377 | unsigned int offset = 0, size, count = 0, i; | |
3378 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
3379 | unsigned int f; | |
3380 | ||
3381 | len -= skb->data_len; | |
3382 | ||
3383 | i = tx_ring->next_to_use; | |
3384 | ||
3385 | while (len) { | |
3386 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3387 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
3388 | ||
3389 | tx_buffer_info->length = size; | |
3390 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
3391 | skb->data + offset, | |
3392 | size, PCI_DMA_TODEVICE); | |
3393 | tx_buffer_info->time_stamp = jiffies; | |
3394 | tx_buffer_info->next_to_watch = i; | |
3395 | ||
3396 | len -= size; | |
3397 | offset += size; | |
3398 | count++; | |
3399 | i++; | |
3400 | if (i == tx_ring->count) | |
3401 | i = 0; | |
3402 | } | |
3403 | ||
3404 | for (f = 0; f < nr_frags; f++) { | |
3405 | struct skb_frag_struct *frag; | |
3406 | ||
3407 | frag = &skb_shinfo(skb)->frags[f]; | |
3408 | len = frag->size; | |
3409 | offset = frag->page_offset; | |
3410 | ||
3411 | while (len) { | |
3412 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3413 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
3414 | ||
3415 | tx_buffer_info->length = size; | |
3416 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
3417 | frag->page, | |
3418 | offset, | |
3419 | size, PCI_DMA_TODEVICE); | |
3420 | tx_buffer_info->time_stamp = jiffies; | |
3421 | tx_buffer_info->next_to_watch = i; | |
3422 | ||
3423 | len -= size; | |
3424 | offset += size; | |
3425 | count++; | |
3426 | i++; | |
3427 | if (i == tx_ring->count) | |
3428 | i = 0; | |
3429 | } | |
3430 | } | |
3431 | if (i == 0) | |
3432 | i = tx_ring->count - 1; | |
3433 | else | |
3434 | i = i - 1; | |
3435 | tx_ring->tx_buffer_info[i].skb = skb; | |
3436 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
3437 | ||
3438 | return count; | |
3439 | } | |
3440 | ||
3441 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
3442 | struct ixgbe_ring *tx_ring, | |
3443 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
3444 | { | |
3445 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
3446 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3447 | u32 olinfo_status = 0, cmd_type_len = 0; | |
3448 | unsigned int i; | |
3449 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
3450 | ||
3451 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
3452 | ||
3453 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
3454 | ||
3455 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3456 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
3457 | ||
3458 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
3459 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
3460 | ||
3461 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3462 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3463 | ||
4eeae6fd PW |
3464 | /* use index 1 context for tso */ |
3465 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
3466 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) |
3467 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
3468 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3469 | ||
3470 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
3471 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3472 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3473 | ||
3474 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
3475 | ||
3476 | i = tx_ring->next_to_use; | |
3477 | while (count--) { | |
3478 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3479 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
3480 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
3481 | tx_desc->read.cmd_type_len = | |
3482 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
3483 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
3484 | ||
3485 | i++; | |
3486 | if (i == tx_ring->count) | |
3487 | i = 0; | |
3488 | } | |
3489 | ||
3490 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
3491 | ||
3492 | /* | |
3493 | * Force memory writes to complete before letting h/w | |
3494 | * know there are new descriptors to fetch. (Only | |
3495 | * applicable for weak-ordered memory model archs, | |
3496 | * such as IA-64). | |
3497 | */ | |
3498 | wmb(); | |
3499 | ||
3500 | tx_ring->next_to_use = i; | |
3501 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3502 | } | |
3503 | ||
e092be60 AV |
3504 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
3505 | struct ixgbe_ring *tx_ring, int size) | |
3506 | { | |
3507 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3508 | ||
30eba97a | 3509 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
3510 | /* Herbert's original patch had: |
3511 | * smp_mb__after_netif_stop_queue(); | |
3512 | * but since that doesn't exist yet, just open code it. */ | |
3513 | smp_mb(); | |
3514 | ||
3515 | /* We need to check again in a case another CPU has just | |
3516 | * made room available. */ | |
3517 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
3518 | return -EBUSY; | |
3519 | ||
3520 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
af72166f | 3521 | netif_start_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
3522 | ++adapter->restart_queue; |
3523 | return 0; | |
3524 | } | |
3525 | ||
3526 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, | |
3527 | struct ixgbe_ring *tx_ring, int size) | |
3528 | { | |
3529 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
3530 | return 0; | |
3531 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); | |
3532 | } | |
3533 | ||
3534 | ||
9a799d71 AK |
3535 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
3536 | { | |
3537 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3538 | struct ixgbe_ring *tx_ring; | |
3539 | unsigned int len = skb->len; | |
3540 | unsigned int first; | |
3541 | unsigned int tx_flags = 0; | |
30eba97a AV |
3542 | u8 hdr_len = 0; |
3543 | int r_idx = 0, tso; | |
9a799d71 AK |
3544 | unsigned int mss = 0; |
3545 | int count = 0; | |
3546 | unsigned int f; | |
3547 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
3548 | len -= skb->data_len; | |
30eba97a | 3549 | r_idx = (adapter->num_tx_queues - 1) & skb->queue_mapping; |
30eba97a | 3550 | tx_ring = &adapter->tx_ring[r_idx]; |
9a799d71 | 3551 | |
9a799d71 AK |
3552 | |
3553 | if (skb->len <= 0) { | |
3554 | dev_kfree_skb(skb); | |
3555 | return NETDEV_TX_OK; | |
3556 | } | |
3557 | mss = skb_shinfo(skb)->gso_size; | |
3558 | ||
3559 | if (mss) | |
3560 | count++; | |
3561 | else if (skb->ip_summed == CHECKSUM_PARTIAL) | |
3562 | count++; | |
3563 | ||
3564 | count += TXD_USE_COUNT(len); | |
3565 | for (f = 0; f < nr_frags; f++) | |
3566 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
3567 | ||
e092be60 | 3568 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
9a799d71 | 3569 | adapter->tx_busy++; |
9a799d71 AK |
3570 | return NETDEV_TX_BUSY; |
3571 | } | |
9a799d71 AK |
3572 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
3573 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
3574 | tx_flags |= (vlan_tx_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT); | |
3575 | } | |
3576 | ||
8327d000 | 3577 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
3578 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
3579 | first = tx_ring->next_to_use; | |
3580 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
3581 | if (tso < 0) { | |
3582 | dev_kfree_skb_any(skb); | |
3583 | return NETDEV_TX_OK; | |
3584 | } | |
3585 | ||
3586 | if (tso) | |
3587 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
3588 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
3589 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
3590 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
3591 | ||
3592 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, | |
3593 | ixgbe_tx_map(adapter, tx_ring, skb, first), | |
3594 | skb->len, hdr_len); | |
3595 | ||
3596 | netdev->trans_start = jiffies; | |
3597 | ||
e092be60 | 3598 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); |
9a799d71 AK |
3599 | |
3600 | return NETDEV_TX_OK; | |
3601 | } | |
3602 | ||
3603 | /** | |
3604 | * ixgbe_get_stats - Get System Network Statistics | |
3605 | * @netdev: network interface device structure | |
3606 | * | |
3607 | * Returns the address of the device statistics structure. | |
3608 | * The statistics are actually updated from the timer callback. | |
3609 | **/ | |
3610 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
3611 | { | |
3612 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3613 | ||
3614 | /* only return the current stats */ | |
3615 | return &adapter->net_stats; | |
3616 | } | |
3617 | ||
3618 | /** | |
3619 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
3620 | * @netdev: network interface device structure | |
3621 | * @p: pointer to an address structure | |
3622 | * | |
3623 | * Returns 0 on success, negative on failure | |
3624 | **/ | |
3625 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
3626 | { | |
3627 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3628 | struct sockaddr *addr = p; | |
3629 | ||
3630 | if (!is_valid_ether_addr(addr->sa_data)) | |
3631 | return -EADDRNOTAVAIL; | |
3632 | ||
3633 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3634 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
3635 | ||
c44ade9e | 3636 | adapter->hw.mac.ops.set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
3637 | |
3638 | return 0; | |
3639 | } | |
3640 | ||
3641 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3642 | /* | |
3643 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3644 | * without having to re-enable interrupts. It's not called while | |
3645 | * the interrupt routine is executing. | |
3646 | */ | |
3647 | static void ixgbe_netpoll(struct net_device *netdev) | |
3648 | { | |
3649 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3650 | ||
3651 | disable_irq(adapter->pdev->irq); | |
3652 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
3653 | ixgbe_intr(adapter->pdev->irq, netdev); | |
3654 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
3655 | enable_irq(adapter->pdev->irq); | |
3656 | } | |
3657 | #endif | |
3658 | ||
c44ade9e JB |
3659 | /** |
3660 | * ixgbe_link_config - set up initial link with default speed and duplex | |
3661 | * @hw: pointer to private hardware struct | |
3662 | * | |
3663 | * Returns 0 on success, negative on failure | |
3664 | **/ | |
3665 | static int ixgbe_link_config(struct ixgbe_hw *hw) | |
3666 | { | |
3667 | u32 autoneg = IXGBE_LINK_SPEED_10GB_FULL; | |
3668 | ||
3669 | /* must always autoneg for both 1G and 10G link */ | |
3670 | hw->mac.autoneg = true; | |
3671 | ||
3672 | return hw->mac.ops.setup_link_speed(hw, autoneg, true, true); | |
3673 | } | |
3674 | ||
021230d4 AV |
3675 | /** |
3676 | * ixgbe_napi_add_all - prep napi structs for use | |
3677 | * @adapter: private struct | |
3678 | * helper function to napi_add each possible q_vector->napi | |
3679 | */ | |
3680 | static void ixgbe_napi_add_all(struct ixgbe_adapter *adapter) | |
3681 | { | |
3682 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
3683 | int (*poll)(struct napi_struct *, int); | |
3684 | ||
3685 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
3686 | poll = &ixgbe_clean_rxonly; | |
3687 | } else { | |
3688 | poll = &ixgbe_poll; | |
3689 | /* only one q_vector for legacy modes */ | |
3690 | q_vectors = 1; | |
3691 | } | |
3692 | ||
3693 | for (i = 0; i < q_vectors; i++) { | |
3694 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[i]; | |
3695 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
3696 | (*poll), 64); | |
3697 | } | |
3698 | } | |
3699 | ||
9a799d71 AK |
3700 | /** |
3701 | * ixgbe_probe - Device Initialization Routine | |
3702 | * @pdev: PCI device information struct | |
3703 | * @ent: entry in ixgbe_pci_tbl | |
3704 | * | |
3705 | * Returns 0 on success, negative on failure | |
3706 | * | |
3707 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
3708 | * The OS initialization, configuring of the adapter private structure, | |
3709 | * and a hardware reset occur. | |
3710 | **/ | |
3711 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
3712 | const struct pci_device_id *ent) | |
3713 | { | |
3714 | struct net_device *netdev; | |
3715 | struct ixgbe_adapter *adapter = NULL; | |
3716 | struct ixgbe_hw *hw; | |
3717 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
9a799d71 AK |
3718 | static int cards_found; |
3719 | int i, err, pci_using_dac; | |
3720 | u16 link_status, link_speed, link_width; | |
c44ade9e | 3721 | u32 part_num, eec; |
9a799d71 AK |
3722 | |
3723 | err = pci_enable_device(pdev); | |
3724 | if (err) | |
3725 | return err; | |
3726 | ||
3727 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
3728 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
3729 | pci_using_dac = 1; | |
3730 | } else { | |
3731 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
3732 | if (err) { | |
3733 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3734 | if (err) { | |
c44ade9e JB |
3735 | dev_err(&pdev->dev, "No usable DMA configuration, " |
3736 | "aborting\n"); | |
9a799d71 AK |
3737 | goto err_dma; |
3738 | } | |
3739 | } | |
3740 | pci_using_dac = 0; | |
3741 | } | |
3742 | ||
3743 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
3744 | if (err) { | |
3745 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
3746 | goto err_pci_reg; | |
3747 | } | |
3748 | ||
3749 | pci_set_master(pdev); | |
fb3b27bc | 3750 | pci_save_state(pdev); |
9a799d71 | 3751 | |
30eba97a | 3752 | netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES); |
9a799d71 AK |
3753 | if (!netdev) { |
3754 | err = -ENOMEM; | |
3755 | goto err_alloc_etherdev; | |
3756 | } | |
3757 | ||
9a799d71 AK |
3758 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3759 | ||
3760 | pci_set_drvdata(pdev, netdev); | |
3761 | adapter = netdev_priv(netdev); | |
3762 | ||
3763 | adapter->netdev = netdev; | |
3764 | adapter->pdev = pdev; | |
3765 | hw = &adapter->hw; | |
3766 | hw->back = adapter; | |
3767 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
3768 | ||
05857980 JK |
3769 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
3770 | pci_resource_len(pdev, 0)); | |
9a799d71 AK |
3771 | if (!hw->hw_addr) { |
3772 | err = -EIO; | |
3773 | goto err_ioremap; | |
3774 | } | |
3775 | ||
3776 | for (i = 1; i <= 5; i++) { | |
3777 | if (pci_resource_len(pdev, i) == 0) | |
3778 | continue; | |
3779 | } | |
3780 | ||
3781 | netdev->open = &ixgbe_open; | |
3782 | netdev->stop = &ixgbe_close; | |
3783 | netdev->hard_start_xmit = &ixgbe_xmit_frame; | |
3784 | netdev->get_stats = &ixgbe_get_stats; | |
2c5645cf CL |
3785 | netdev->set_rx_mode = &ixgbe_set_rx_mode; |
3786 | netdev->set_multicast_list = &ixgbe_set_rx_mode; | |
9a799d71 AK |
3787 | netdev->set_mac_address = &ixgbe_set_mac; |
3788 | netdev->change_mtu = &ixgbe_change_mtu; | |
3789 | ixgbe_set_ethtool_ops(netdev); | |
3790 | netdev->tx_timeout = &ixgbe_tx_timeout; | |
3791 | netdev->watchdog_timeo = 5 * HZ; | |
9a799d71 AK |
3792 | netdev->vlan_rx_register = ixgbe_vlan_rx_register; |
3793 | netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid; | |
3794 | netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid; | |
3795 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3796 | netdev->poll_controller = ixgbe_netpoll; | |
3797 | #endif | |
3798 | strcpy(netdev->name, pci_name(pdev)); | |
3799 | ||
9a799d71 AK |
3800 | adapter->bd_number = cards_found; |
3801 | ||
9a799d71 AK |
3802 | /* Setup hw api */ |
3803 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
021230d4 | 3804 | hw->mac.type = ii->mac; |
9a799d71 | 3805 | |
c44ade9e JB |
3806 | /* EEPROM */ |
3807 | memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops)); | |
3808 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
3809 | /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ | |
3810 | if (!(eec & (1 << 8))) | |
3811 | hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; | |
3812 | ||
3813 | /* PHY */ | |
3814 | memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); | |
3815 | /* phy->sfp_type = ixgbe_sfp_type_unknown; */ | |
3816 | ||
9a799d71 AK |
3817 | err = ii->get_invariants(hw); |
3818 | if (err) | |
3819 | goto err_hw_init; | |
3820 | ||
3821 | /* setup the private structure */ | |
3822 | err = ixgbe_sw_init(adapter); | |
3823 | if (err) | |
3824 | goto err_sw_init; | |
3825 | ||
c44ade9e JB |
3826 | /* reset_hw fills in the perm_addr as well */ |
3827 | err = hw->mac.ops.reset_hw(hw); | |
3828 | if (err) { | |
3829 | dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err); | |
3830 | goto err_sw_init; | |
3831 | } | |
3832 | ||
9a799d71 | 3833 | netdev->features = NETIF_F_SG | |
22f32b7a | 3834 | NETIF_F_IP_CSUM | |
9a799d71 AK |
3835 | NETIF_F_HW_VLAN_TX | |
3836 | NETIF_F_HW_VLAN_RX | | |
3837 | NETIF_F_HW_VLAN_FILTER; | |
3838 | ||
e9990a9c | 3839 | netdev->features |= NETIF_F_IPV6_CSUM; |
9a799d71 | 3840 | netdev->features |= NETIF_F_TSO; |
9a799d71 | 3841 | netdev->features |= NETIF_F_TSO6; |
e9990a9c | 3842 | netdev->features |= NETIF_F_LRO; |
ad31c402 JK |
3843 | |
3844 | netdev->vlan_features |= NETIF_F_TSO; | |
3845 | netdev->vlan_features |= NETIF_F_TSO6; | |
22f32b7a | 3846 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
ad31c402 JK |
3847 | netdev->vlan_features |= NETIF_F_SG; |
3848 | ||
9a799d71 AK |
3849 | if (pci_using_dac) |
3850 | netdev->features |= NETIF_F_HIGHDMA; | |
3851 | ||
9a799d71 | 3852 | /* make sure the EEPROM is good */ |
c44ade9e | 3853 | if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { |
9a799d71 AK |
3854 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); |
3855 | err = -EIO; | |
3856 | goto err_eeprom; | |
3857 | } | |
3858 | ||
3859 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
3860 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
3861 | ||
c44ade9e JB |
3862 | if (ixgbe_validate_mac_addr(netdev->perm_addr)) { |
3863 | dev_err(&pdev->dev, "invalid MAC address\n"); | |
9a799d71 AK |
3864 | err = -EIO; |
3865 | goto err_eeprom; | |
3866 | } | |
3867 | ||
3868 | init_timer(&adapter->watchdog_timer); | |
3869 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
3870 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
3871 | ||
3872 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
cf8280ee | 3873 | INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task); |
9a799d71 | 3874 | |
021230d4 AV |
3875 | err = ixgbe_init_interrupt_scheme(adapter); |
3876 | if (err) | |
3877 | goto err_sw_init; | |
9a799d71 AK |
3878 | |
3879 | /* print bus type/speed/width info */ | |
3880 | pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status); | |
3881 | link_speed = link_status & IXGBE_PCI_LINK_SPEED; | |
3882 | link_width = link_status & IXGBE_PCI_LINK_WIDTH; | |
3883 | dev_info(&pdev->dev, "(PCI Express:%s:%s) " | |
3884 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
3885 | ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" : | |
3886 | (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" : | |
3887 | "Unknown"), | |
3888 | ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" : | |
3889 | (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" : | |
3890 | (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" : | |
3891 | (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" : | |
3892 | "Unknown"), | |
3893 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
3894 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
c44ade9e | 3895 | ixgbe_read_pba_num_generic(hw, &part_num); |
9a799d71 AK |
3896 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
3897 | hw->mac.type, hw->phy.type, | |
3898 | (part_num >> 8), (part_num & 0xff)); | |
3899 | ||
0c254d86 AK |
3900 | if (link_width <= IXGBE_PCI_LINK_WIDTH_4) { |
3901 | dev_warn(&pdev->dev, "PCI-Express bandwidth available for " | |
3902 | "this card is not sufficient for optimal " | |
3903 | "performance.\n"); | |
3904 | dev_warn(&pdev->dev, "For optimal performance a x8 " | |
3905 | "PCI-Express slot is required.\n"); | |
3906 | } | |
3907 | ||
9a799d71 | 3908 | /* reset the hardware with the new settings */ |
c44ade9e JB |
3909 | hw->mac.ops.start_hw(hw); |
3910 | ||
3911 | /* link_config depends on start_hw being called at least once */ | |
3912 | err = ixgbe_link_config(hw); | |
3913 | if (err) { | |
3914 | dev_err(&pdev->dev, "setup_link_speed FAILED %d\n", err); | |
3915 | goto err_register; | |
3916 | } | |
9a799d71 AK |
3917 | |
3918 | netif_carrier_off(netdev); | |
fd2ea0a7 | 3919 | netif_tx_stop_all_queues(netdev); |
9a799d71 | 3920 | |
021230d4 AV |
3921 | ixgbe_napi_add_all(adapter); |
3922 | ||
9a799d71 AK |
3923 | strcpy(netdev->name, "eth%d"); |
3924 | err = register_netdev(netdev); | |
3925 | if (err) | |
3926 | goto err_register; | |
3927 | ||
a1f96ee7 | 3928 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
652f093f | 3929 | if (dca_add_requester(&pdev->dev) == 0) { |
bd0362dd JC |
3930 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
3931 | /* always use CB2 mode, difference is masked | |
3932 | * in the CB driver */ | |
3933 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); | |
3934 | ixgbe_setup_dca(adapter); | |
3935 | } | |
3936 | #endif | |
9a799d71 AK |
3937 | |
3938 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
3939 | cards_found++; | |
3940 | return 0; | |
3941 | ||
3942 | err_register: | |
5eba3699 | 3943 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3944 | err_hw_init: |
3945 | err_sw_init: | |
021230d4 | 3946 | ixgbe_reset_interrupt_capability(adapter); |
9a799d71 AK |
3947 | err_eeprom: |
3948 | iounmap(hw->hw_addr); | |
3949 | err_ioremap: | |
3950 | free_netdev(netdev); | |
3951 | err_alloc_etherdev: | |
3952 | pci_release_regions(pdev); | |
3953 | err_pci_reg: | |
3954 | err_dma: | |
3955 | pci_disable_device(pdev); | |
3956 | return err; | |
3957 | } | |
3958 | ||
3959 | /** | |
3960 | * ixgbe_remove - Device Removal Routine | |
3961 | * @pdev: PCI device information struct | |
3962 | * | |
3963 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
3964 | * that it should release a PCI device. The could be caused by a | |
3965 | * Hot-Plug event, or because the driver is going to be removed from | |
3966 | * memory. | |
3967 | **/ | |
3968 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
3969 | { | |
3970 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3971 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3972 | ||
3973 | set_bit(__IXGBE_DOWN, &adapter->state); | |
3974 | del_timer_sync(&adapter->watchdog_timer); | |
3975 | ||
3976 | flush_scheduled_work(); | |
3977 | ||
a1f96ee7 | 3978 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
3979 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
3980 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
3981 | dca_remove_requester(&pdev->dev); | |
3982 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); | |
3983 | } | |
3984 | ||
3985 | #endif | |
9a799d71 AK |
3986 | unregister_netdev(netdev); |
3987 | ||
021230d4 | 3988 | ixgbe_reset_interrupt_capability(adapter); |
5eba3699 | 3989 | |
021230d4 | 3990 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3991 | |
3992 | iounmap(adapter->hw.hw_addr); | |
3993 | pci_release_regions(pdev); | |
3994 | ||
021230d4 AV |
3995 | DPRINTK(PROBE, INFO, "complete\n"); |
3996 | kfree(adapter->tx_ring); | |
3997 | kfree(adapter->rx_ring); | |
3998 | ||
9a799d71 AK |
3999 | free_netdev(netdev); |
4000 | ||
4001 | pci_disable_device(pdev); | |
4002 | } | |
4003 | ||
4004 | /** | |
4005 | * ixgbe_io_error_detected - called when PCI error is detected | |
4006 | * @pdev: Pointer to PCI device | |
4007 | * @state: The current pci connection state | |
4008 | * | |
4009 | * This function is called after a PCI bus error affecting | |
4010 | * this device has been detected. | |
4011 | */ | |
4012 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
4013 | pci_channel_state_t state) | |
4014 | { | |
4015 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4016 | struct ixgbe_adapter *adapter = netdev->priv; | |
4017 | ||
4018 | netif_device_detach(netdev); | |
4019 | ||
4020 | if (netif_running(netdev)) | |
4021 | ixgbe_down(adapter); | |
4022 | pci_disable_device(pdev); | |
4023 | ||
4024 | /* Request a slot slot reset. */ | |
4025 | return PCI_ERS_RESULT_NEED_RESET; | |
4026 | } | |
4027 | ||
4028 | /** | |
4029 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
4030 | * @pdev: Pointer to PCI device | |
4031 | * | |
4032 | * Restart the card from scratch, as if from a cold-boot. | |
4033 | */ | |
4034 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
4035 | { | |
4036 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4037 | struct ixgbe_adapter *adapter = netdev->priv; | |
4038 | ||
4039 | if (pci_enable_device(pdev)) { | |
4040 | DPRINTK(PROBE, ERR, | |
4041 | "Cannot re-enable PCI device after reset.\n"); | |
4042 | return PCI_ERS_RESULT_DISCONNECT; | |
4043 | } | |
4044 | pci_set_master(pdev); | |
fb3b27bc | 4045 | pci_restore_state(pdev); |
9a799d71 AK |
4046 | |
4047 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4048 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4049 | ||
4050 | ixgbe_reset(adapter); | |
4051 | ||
4052 | return PCI_ERS_RESULT_RECOVERED; | |
4053 | } | |
4054 | ||
4055 | /** | |
4056 | * ixgbe_io_resume - called when traffic can start flowing again. | |
4057 | * @pdev: Pointer to PCI device | |
4058 | * | |
4059 | * This callback is called when the error recovery driver tells us that | |
4060 | * its OK to resume normal operation. | |
4061 | */ | |
4062 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
4063 | { | |
4064 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4065 | struct ixgbe_adapter *adapter = netdev->priv; | |
4066 | ||
4067 | if (netif_running(netdev)) { | |
4068 | if (ixgbe_up(adapter)) { | |
4069 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
4070 | return; | |
4071 | } | |
4072 | } | |
4073 | ||
4074 | netif_device_attach(netdev); | |
4075 | ||
4076 | } | |
4077 | ||
4078 | static struct pci_error_handlers ixgbe_err_handler = { | |
4079 | .error_detected = ixgbe_io_error_detected, | |
4080 | .slot_reset = ixgbe_io_slot_reset, | |
4081 | .resume = ixgbe_io_resume, | |
4082 | }; | |
4083 | ||
4084 | static struct pci_driver ixgbe_driver = { | |
4085 | .name = ixgbe_driver_name, | |
4086 | .id_table = ixgbe_pci_tbl, | |
4087 | .probe = ixgbe_probe, | |
4088 | .remove = __devexit_p(ixgbe_remove), | |
4089 | #ifdef CONFIG_PM | |
4090 | .suspend = ixgbe_suspend, | |
4091 | .resume = ixgbe_resume, | |
4092 | #endif | |
4093 | .shutdown = ixgbe_shutdown, | |
4094 | .err_handler = &ixgbe_err_handler | |
4095 | }; | |
4096 | ||
4097 | /** | |
4098 | * ixgbe_init_module - Driver Registration Routine | |
4099 | * | |
4100 | * ixgbe_init_module is the first routine called when the driver is | |
4101 | * loaded. All it does is register with the PCI subsystem. | |
4102 | **/ | |
4103 | static int __init ixgbe_init_module(void) | |
4104 | { | |
4105 | int ret; | |
4106 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
4107 | ixgbe_driver_string, ixgbe_driver_version); | |
4108 | ||
4109 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
4110 | ||
a1f96ee7 | 4111 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
4112 | dca_register_notify(&dca_notifier); |
4113 | ||
4114 | #endif | |
9a799d71 AK |
4115 | ret = pci_register_driver(&ixgbe_driver); |
4116 | return ret; | |
4117 | } | |
4118 | module_init(ixgbe_init_module); | |
4119 | ||
4120 | /** | |
4121 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
4122 | * | |
4123 | * ixgbe_exit_module is called just before the driver is removed | |
4124 | * from memory. | |
4125 | **/ | |
4126 | static void __exit ixgbe_exit_module(void) | |
4127 | { | |
a1f96ee7 | 4128 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
4129 | dca_unregister_notify(&dca_notifier); |
4130 | #endif | |
9a799d71 AK |
4131 | pci_unregister_driver(&ixgbe_driver); |
4132 | } | |
bd0362dd | 4133 | |
a1f96ee7 | 4134 | #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) |
bd0362dd JC |
4135 | static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, |
4136 | void *p) | |
4137 | { | |
4138 | int ret_val; | |
4139 | ||
4140 | ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, | |
4141 | __ixgbe_notify_dca); | |
4142 | ||
4143 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
4144 | } | |
96b0e0f6 | 4145 | #endif /* CONFIG_DCA or CONFIG_DCA_MODULE */ |
bd0362dd | 4146 | |
9a799d71 AK |
4147 | module_exit(ixgbe_exit_module); |
4148 | ||
4149 | /* ixgbe_main.c */ |