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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 AK |
50 | |
51 | #define DRV_VERSION "1.1.18" | |
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_82598AT_DUAL_PORT), |
3957d63d | 74 | board_82598 }, |
9a799d71 | 75 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
3957d63d | 76 | board_82598 }, |
9a799d71 AK |
77 | |
78 | /* required last entry */ | |
79 | {0, } | |
80 | }; | |
81 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
82 | ||
83 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
84 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
85 | MODULE_LICENSE("GPL"); | |
86 | MODULE_VERSION(DRV_VERSION); | |
87 | ||
88 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
89 | ||
5eba3699 AV |
90 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
91 | { | |
92 | u32 ctrl_ext; | |
93 | ||
94 | /* Let firmware take over control of h/w */ | |
95 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
96 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
97 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); | |
98 | } | |
99 | ||
100 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) | |
101 | { | |
102 | u32 ctrl_ext; | |
103 | ||
104 | /* Let firmware know the driver has taken over */ | |
105 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
106 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
107 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); | |
108 | } | |
9a799d71 AK |
109 | |
110 | #ifdef DEBUG | |
111 | /** | |
112 | * ixgbe_get_hw_dev_name - return device name string | |
113 | * used by hardware layer to print debugging information | |
114 | **/ | |
115 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) | |
116 | { | |
117 | struct ixgbe_adapter *adapter = hw->back; | |
118 | struct net_device *netdev = adapter->netdev; | |
119 | return netdev->name; | |
120 | } | |
121 | #endif | |
122 | ||
123 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry, | |
124 | u8 msix_vector) | |
125 | { | |
126 | u32 ivar, index; | |
127 | ||
128 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
129 | index = (int_alloc_entry >> 2) & 0x1F; | |
130 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index)); | |
131 | ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3))); | |
132 | ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3))); | |
133 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar); | |
134 | } | |
135 | ||
136 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
137 | struct ixgbe_tx_buffer | |
138 | *tx_buffer_info) | |
139 | { | |
140 | if (tx_buffer_info->dma) { | |
141 | pci_unmap_page(adapter->pdev, | |
142 | tx_buffer_info->dma, | |
143 | tx_buffer_info->length, PCI_DMA_TODEVICE); | |
144 | tx_buffer_info->dma = 0; | |
145 | } | |
146 | if (tx_buffer_info->skb) { | |
147 | dev_kfree_skb_any(tx_buffer_info->skb); | |
148 | tx_buffer_info->skb = NULL; | |
149 | } | |
150 | /* tx_buffer_info must be completely set up in the transmit path */ | |
151 | } | |
152 | ||
153 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
154 | struct ixgbe_ring *tx_ring, | |
155 | unsigned int eop, | |
156 | union ixgbe_adv_tx_desc *eop_desc) | |
157 | { | |
158 | /* Detect a transmit hang in hardware, this serializes the | |
159 | * check with the clearing of time_stamp and movement of i */ | |
160 | adapter->detect_tx_hung = false; | |
161 | if (tx_ring->tx_buffer_info[eop].dma && | |
162 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && | |
163 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
164 | /* detected Tx unit hang */ | |
165 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
166 | " TDH <%x>\n" | |
167 | " TDT <%x>\n" | |
168 | " next_to_use <%x>\n" | |
169 | " next_to_clean <%x>\n" | |
170 | "tx_buffer_info[next_to_clean]\n" | |
171 | " time_stamp <%lx>\n" | |
172 | " next_to_watch <%x>\n" | |
173 | " jiffies <%lx>\n" | |
174 | " next_to_watch.status <%x>\n", | |
175 | readl(adapter->hw.hw_addr + tx_ring->head), | |
176 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
177 | tx_ring->next_to_use, | |
178 | tx_ring->next_to_clean, | |
179 | tx_ring->tx_buffer_info[eop].time_stamp, | |
180 | eop, jiffies, eop_desc->wb.status); | |
181 | return true; | |
182 | } | |
183 | ||
184 | return false; | |
185 | } | |
186 | ||
e092be60 AV |
187 | #define IXGBE_MAX_TXD_PWR 14 |
188 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
189 | ||
190 | /* Tx Descriptors needed, worst case */ | |
191 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
192 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
193 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
194 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
195 | ||
9a799d71 AK |
196 | /** |
197 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
198 | * @adapter: board private structure | |
199 | **/ | |
200 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
201 | struct ixgbe_ring *tx_ring) | |
202 | { | |
203 | struct net_device *netdev = adapter->netdev; | |
204 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; | |
205 | struct ixgbe_tx_buffer *tx_buffer_info; | |
206 | unsigned int i, eop; | |
207 | bool cleaned = false; | |
e092be60 | 208 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
9a799d71 AK |
209 | |
210 | i = tx_ring->next_to_clean; | |
211 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
212 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
213 | while (eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) { | |
e092be60 AV |
214 | cleaned = false; |
215 | while (!cleaned) { | |
9a799d71 AK |
216 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
217 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
218 | cleaned = (i == eop); | |
219 | ||
220 | tx_ring->stats.bytes += tx_buffer_info->length; | |
e092be60 AV |
221 | if (cleaned) { |
222 | struct sk_buff *skb = tx_buffer_info->skb; | |
223 | #ifdef NETIF_F_TSO | |
224 | unsigned int segs, bytecount; | |
225 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
226 | /* multiply data chunks by size of headers */ | |
227 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
228 | skb->len; | |
229 | total_tx_packets += segs; | |
230 | total_tx_bytes += bytecount; | |
231 | #else | |
232 | total_tx_packets++; | |
233 | total_tx_bytes += skb->len; | |
234 | #endif | |
235 | } | |
9a799d71 AK |
236 | ixgbe_unmap_and_free_tx_resource(adapter, |
237 | tx_buffer_info); | |
238 | tx_desc->wb.status = 0; | |
239 | ||
240 | i++; | |
241 | if (i == tx_ring->count) | |
242 | i = 0; | |
243 | } | |
244 | ||
245 | tx_ring->stats.packets++; | |
246 | ||
247 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
248 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
249 | ||
250 | /* weight of a sort for tx, avoid endless transmit cleanup */ | |
e092be60 | 251 | if (total_tx_packets >= tx_ring->work_limit) |
9a799d71 AK |
252 | break; |
253 | } | |
254 | ||
255 | tx_ring->next_to_clean = i; | |
256 | ||
e092be60 AV |
257 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
258 | if (total_tx_packets && netif_carrier_ok(netdev) && | |
259 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
260 | /* Make sure that anybody stopping the queue after this | |
261 | * sees the new next_to_clean. | |
262 | */ | |
263 | smp_mb(); | |
264 | if (netif_queue_stopped(netdev) && | |
265 | !test_bit(__IXGBE_DOWN, &adapter->state)) { | |
266 | netif_wake_queue(netdev); | |
267 | adapter->restart_queue++; | |
268 | } | |
269 | } | |
9a799d71 AK |
270 | |
271 | if (adapter->detect_tx_hung) | |
272 | if (ixgbe_check_tx_hang(adapter, tx_ring, eop, eop_desc)) | |
273 | netif_stop_queue(netdev); | |
274 | ||
e092be60 | 275 | if (total_tx_packets >= tx_ring->work_limit) |
9a799d71 AK |
276 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->eims_value); |
277 | ||
d2f4fbe2 AV |
278 | adapter->net_stats.tx_bytes += total_tx_bytes; |
279 | adapter->net_stats.tx_packets += total_tx_packets; | |
e092be60 | 280 | cleaned = total_tx_packets ? true : false; |
9a799d71 AK |
281 | return cleaned; |
282 | } | |
283 | ||
284 | /** | |
285 | * ixgbe_receive_skb - Send a completed packet up the stack | |
286 | * @adapter: board private structure | |
287 | * @skb: packet to send up | |
288 | * @is_vlan: packet has a VLAN tag | |
289 | * @tag: VLAN tag from descriptor | |
290 | **/ | |
291 | static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, | |
292 | struct sk_buff *skb, bool is_vlan, | |
293 | u16 tag) | |
294 | { | |
295 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
296 | if (adapter->vlgrp && is_vlan) | |
297 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); | |
298 | else | |
299 | netif_receive_skb(skb); | |
300 | } else { | |
301 | ||
302 | if (adapter->vlgrp && is_vlan) | |
303 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
304 | else | |
305 | netif_rx(skb); | |
306 | } | |
307 | } | |
308 | ||
e59bd25d AV |
309 | /** |
310 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum | |
311 | * @adapter: address of board private structure | |
312 | * @status_err: hardware indication of status of receive | |
313 | * @skb: skb currently being received and modified | |
314 | **/ | |
9a799d71 AK |
315 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
316 | u32 status_err, | |
317 | struct sk_buff *skb) | |
318 | { | |
319 | skb->ip_summed = CHECKSUM_NONE; | |
320 | ||
e59bd25d | 321 | /* Ignore Checksum bit is set, or rx csum disabled */ |
9a799d71 | 322 | if ((status_err & IXGBE_RXD_STAT_IXSM) || |
e59bd25d | 323 | !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) |
9a799d71 | 324 | return; |
e59bd25d AV |
325 | |
326 | /* if IP and error */ | |
327 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
328 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
9a799d71 AK |
329 | adapter->hw_csum_rx_error++; |
330 | return; | |
331 | } | |
e59bd25d AV |
332 | |
333 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
334 | return; | |
335 | ||
336 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
337 | adapter->hw_csum_rx_error++; | |
338 | return; | |
339 | } | |
340 | ||
9a799d71 | 341 | /* It must be a TCP or UDP packet with a valid checksum */ |
e59bd25d | 342 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9a799d71 AK |
343 | adapter->hw_csum_rx_good++; |
344 | } | |
345 | ||
346 | /** | |
347 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
348 | * @adapter: address of board private structure | |
349 | **/ | |
350 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
351 | struct ixgbe_ring *rx_ring, | |
352 | int cleaned_count) | |
353 | { | |
354 | struct net_device *netdev = adapter->netdev; | |
355 | struct pci_dev *pdev = adapter->pdev; | |
356 | union ixgbe_adv_rx_desc *rx_desc; | |
357 | struct ixgbe_rx_buffer *rx_buffer_info; | |
358 | struct sk_buff *skb; | |
359 | unsigned int i; | |
360 | unsigned int bufsz = adapter->rx_buf_len + NET_IP_ALIGN; | |
361 | ||
362 | i = rx_ring->next_to_use; | |
363 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
364 | ||
365 | while (cleaned_count--) { | |
366 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
367 | ||
368 | if (!rx_buffer_info->page && | |
369 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { | |
370 | rx_buffer_info->page = alloc_page(GFP_ATOMIC); | |
371 | if (!rx_buffer_info->page) { | |
372 | adapter->alloc_rx_page_failed++; | |
373 | goto no_buffers; | |
374 | } | |
375 | rx_buffer_info->page_dma = | |
376 | pci_map_page(pdev, rx_buffer_info->page, | |
377 | 0, PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
378 | } | |
379 | ||
380 | if (!rx_buffer_info->skb) { | |
381 | skb = netdev_alloc_skb(netdev, bufsz); | |
382 | ||
383 | if (!skb) { | |
384 | adapter->alloc_rx_buff_failed++; | |
385 | goto no_buffers; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Make buffer alignment 2 beyond a 16 byte boundary | |
390 | * this will result in a 16 byte aligned IP header after | |
391 | * the 14 byte MAC header is removed | |
392 | */ | |
393 | skb_reserve(skb, NET_IP_ALIGN); | |
394 | ||
395 | rx_buffer_info->skb = skb; | |
396 | rx_buffer_info->dma = pci_map_single(pdev, skb->data, | |
397 | bufsz, | |
398 | PCI_DMA_FROMDEVICE); | |
399 | } | |
400 | /* Refresh the desc even if buffer_addrs didn't change because | |
401 | * each write-back erases this info. */ | |
402 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
403 | rx_desc->read.pkt_addr = | |
404 | cpu_to_le64(rx_buffer_info->page_dma); | |
405 | rx_desc->read.hdr_addr = | |
406 | cpu_to_le64(rx_buffer_info->dma); | |
407 | } else { | |
408 | rx_desc->read.pkt_addr = | |
409 | cpu_to_le64(rx_buffer_info->dma); | |
410 | } | |
411 | ||
412 | i++; | |
413 | if (i == rx_ring->count) | |
414 | i = 0; | |
415 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
416 | } | |
417 | no_buffers: | |
418 | if (rx_ring->next_to_use != i) { | |
419 | rx_ring->next_to_use = i; | |
420 | if (i-- == 0) | |
421 | i = (rx_ring->count - 1); | |
422 | ||
423 | /* | |
424 | * Force memory writes to complete before letting h/w | |
425 | * know there are new descriptors to fetch. (Only | |
426 | * applicable for weak-ordered memory model archs, | |
427 | * such as IA-64). | |
428 | */ | |
429 | wmb(); | |
430 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
431 | } | |
432 | } | |
433 | ||
434 | static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter, | |
435 | struct ixgbe_ring *rx_ring, | |
436 | int *work_done, int work_to_do) | |
437 | { | |
438 | struct net_device *netdev = adapter->netdev; | |
439 | struct pci_dev *pdev = adapter->pdev; | |
440 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
441 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; | |
442 | struct sk_buff *skb; | |
443 | unsigned int i; | |
444 | u32 upper_len, len, staterr; | |
445 | u16 hdr_info, vlan_tag; | |
446 | bool is_vlan, cleaned = false; | |
447 | int cleaned_count = 0; | |
d2f4fbe2 | 448 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
9a799d71 AK |
449 | |
450 | i = rx_ring->next_to_clean; | |
451 | upper_len = 0; | |
452 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
453 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
454 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
455 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
456 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
457 | ||
458 | while (staterr & IXGBE_RXD_STAT_DD) { | |
459 | if (*work_done >= work_to_do) | |
460 | break; | |
461 | (*work_done)++; | |
462 | ||
463 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
464 | hdr_info = | |
465 | le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info); | |
466 | len = | |
467 | ((hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
468 | IXGBE_RXDADV_HDRBUFLEN_SHIFT); | |
469 | if (hdr_info & IXGBE_RXDADV_SPH) | |
470 | adapter->rx_hdr_split++; | |
471 | if (len > IXGBE_RX_HDR_SIZE) | |
472 | len = IXGBE_RX_HDR_SIZE; | |
473 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
474 | } else | |
475 | len = le16_to_cpu(rx_desc->wb.upper.length); | |
476 | ||
477 | cleaned = true; | |
478 | skb = rx_buffer_info->skb; | |
479 | prefetch(skb->data - NET_IP_ALIGN); | |
480 | rx_buffer_info->skb = NULL; | |
481 | ||
482 | if (len && !skb_shinfo(skb)->nr_frags) { | |
483 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
484 | adapter->rx_buf_len + NET_IP_ALIGN, | |
485 | PCI_DMA_FROMDEVICE); | |
486 | skb_put(skb, len); | |
487 | } | |
488 | ||
489 | if (upper_len) { | |
490 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
491 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
492 | rx_buffer_info->page_dma = 0; | |
493 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
494 | rx_buffer_info->page, 0, upper_len); | |
495 | rx_buffer_info->page = NULL; | |
496 | ||
497 | skb->len += upper_len; | |
498 | skb->data_len += upper_len; | |
499 | skb->truesize += upper_len; | |
500 | } | |
501 | ||
502 | i++; | |
503 | if (i == rx_ring->count) | |
504 | i = 0; | |
505 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
506 | ||
507 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
508 | prefetch(next_rxd); | |
509 | ||
510 | cleaned_count++; | |
511 | if (staterr & IXGBE_RXD_STAT_EOP) { | |
512 | rx_ring->stats.packets++; | |
513 | rx_ring->stats.bytes += skb->len; | |
514 | } else { | |
515 | rx_buffer_info->skb = next_buffer->skb; | |
516 | rx_buffer_info->dma = next_buffer->dma; | |
517 | next_buffer->skb = skb; | |
518 | adapter->non_eop_descs++; | |
519 | goto next_desc; | |
520 | } | |
521 | ||
522 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { | |
523 | dev_kfree_skb_irq(skb); | |
524 | goto next_desc; | |
525 | } | |
526 | ||
527 | ixgbe_rx_checksum(adapter, staterr, skb); | |
d2f4fbe2 AV |
528 | |
529 | /* probably a little skewed due to removing CRC */ | |
530 | total_rx_bytes += skb->len; | |
531 | total_rx_packets++; | |
532 | ||
9a799d71 AK |
533 | skb->protocol = eth_type_trans(skb, netdev); |
534 | ixgbe_receive_skb(adapter, skb, is_vlan, vlan_tag); | |
535 | netdev->last_rx = jiffies; | |
536 | ||
537 | next_desc: | |
538 | rx_desc->wb.upper.status_error = 0; | |
539 | ||
540 | /* return some buffers to hardware, one at a time is too slow */ | |
541 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
542 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
543 | cleaned_count = 0; | |
544 | } | |
545 | ||
546 | /* use prefetched values */ | |
547 | rx_desc = next_rxd; | |
548 | rx_buffer_info = next_buffer; | |
549 | ||
550 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
551 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
552 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
553 | } | |
554 | ||
555 | rx_ring->next_to_clean = i; | |
556 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
557 | ||
558 | if (cleaned_count) | |
559 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
560 | ||
d2f4fbe2 AV |
561 | adapter->net_stats.rx_bytes += total_rx_bytes; |
562 | adapter->net_stats.rx_packets += total_rx_packets; | |
563 | ||
9a799d71 AK |
564 | return cleaned; |
565 | } | |
566 | ||
567 | #define IXGBE_MAX_INTR 10 | |
568 | /** | |
569 | * ixgbe_configure_msix - Configure MSI-X hardware | |
570 | * @adapter: board private structure | |
571 | * | |
572 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
573 | * interrupts. | |
574 | **/ | |
575 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
576 | { | |
577 | int i, vector = 0; | |
578 | ||
579 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
580 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), | |
581 | IXGBE_MSIX_VECTOR(vector)); | |
582 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->tx_eitr), | |
583 | adapter->hw.hw_addr + adapter->tx_ring[i].itr_register); | |
584 | vector++; | |
585 | } | |
586 | ||
587 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
588 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(i), | |
589 | IXGBE_MSIX_VECTOR(vector)); | |
590 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr), | |
591 | adapter->hw.hw_addr + adapter->rx_ring[i].itr_register); | |
592 | vector++; | |
593 | } | |
594 | ||
595 | vector = adapter->num_tx_queues + adapter->num_rx_queues; | |
596 | ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, | |
597 | IXGBE_MSIX_VECTOR(vector)); | |
598 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(vector), 1950); | |
599 | } | |
600 | ||
601 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) | |
602 | { | |
603 | struct net_device *netdev = data; | |
604 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
605 | struct ixgbe_hw *hw = &adapter->hw; | |
606 | u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
607 | ||
608 | if (eicr & IXGBE_EICR_LSC) { | |
609 | adapter->lsc_int++; | |
610 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
611 | mod_timer(&adapter->watchdog_timer, jiffies); | |
612 | } | |
d4f80882 AV |
613 | |
614 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
615 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
9a799d71 AK |
616 | |
617 | return IRQ_HANDLED; | |
618 | } | |
619 | ||
620 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
621 | { | |
622 | struct ixgbe_ring *txr = data; | |
623 | struct ixgbe_adapter *adapter = txr->adapter; | |
624 | ||
625 | ixgbe_clean_tx_irq(adapter, txr); | |
626 | ||
627 | return IRQ_HANDLED; | |
628 | } | |
629 | ||
630 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) | |
631 | { | |
632 | struct ixgbe_ring *rxr = data; | |
633 | struct ixgbe_adapter *adapter = rxr->adapter; | |
634 | ||
635 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rxr->eims_value); | |
636 | netif_rx_schedule(adapter->netdev, &adapter->napi); | |
637 | return IRQ_HANDLED; | |
638 | } | |
639 | ||
640 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) | |
641 | { | |
642 | struct ixgbe_adapter *adapter = container_of(napi, | |
643 | struct ixgbe_adapter, napi); | |
644 | struct net_device *netdev = adapter->netdev; | |
645 | int work_done = 0; | |
646 | struct ixgbe_ring *rxr = adapter->rx_ring; | |
647 | ||
648 | /* Keep link state information with original netdev */ | |
649 | if (!netif_carrier_ok(netdev)) | |
650 | goto quit_polling; | |
651 | ||
652 | ixgbe_clean_rx_irq(adapter, rxr, &work_done, budget); | |
653 | ||
654 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
655 | if ((work_done < budget) || !netif_running(netdev)) { | |
656 | quit_polling: | |
657 | netif_rx_complete(netdev, napi); | |
658 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
659 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
660 | rxr->eims_value); | |
661 | } | |
662 | ||
663 | return work_done; | |
664 | } | |
665 | ||
666 | /** | |
667 | * ixgbe_setup_msix - Initialize MSI-X interrupts | |
668 | * | |
669 | * ixgbe_setup_msix allocates MSI-X vectors and requests | |
670 | * interrutps from the kernel. | |
671 | **/ | |
672 | static int ixgbe_setup_msix(struct ixgbe_adapter *adapter) | |
673 | { | |
674 | struct net_device *netdev = adapter->netdev; | |
675 | int i, int_vector = 0, err = 0; | |
676 | int max_msix_count; | |
677 | ||
678 | /* +1 for the LSC interrupt */ | |
679 | max_msix_count = adapter->num_rx_queues + adapter->num_tx_queues + 1; | |
680 | adapter->msix_entries = kcalloc(max_msix_count, | |
681 | sizeof(struct msix_entry), GFP_KERNEL); | |
682 | if (!adapter->msix_entries) | |
683 | return -ENOMEM; | |
684 | ||
685 | for (i = 0; i < max_msix_count; i++) | |
686 | adapter->msix_entries[i].entry = i; | |
687 | ||
688 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
689 | max_msix_count); | |
690 | if (err) | |
691 | goto out; | |
692 | ||
693 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
694 | sprintf(adapter->tx_ring[i].name, "%s-tx%d", netdev->name, i); | |
695 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
696 | &ixgbe_msix_clean_tx, | |
697 | 0, | |
698 | adapter->tx_ring[i].name, | |
699 | &(adapter->tx_ring[i])); | |
700 | if (err) { | |
701 | DPRINTK(PROBE, ERR, | |
702 | "request_irq failed for MSIX interrupt " | |
703 | "Error: %d\n", err); | |
704 | goto release_irqs; | |
705 | } | |
706 | adapter->tx_ring[i].eims_value = | |
707 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
708 | adapter->tx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
709 | int_vector++; | |
710 | } | |
711 | ||
712 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
713 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
714 | sprintf(adapter->rx_ring[i].name, | |
715 | "%s-rx%d", netdev->name, i); | |
716 | else | |
717 | memcpy(adapter->rx_ring[i].name, | |
718 | netdev->name, IFNAMSIZ); | |
719 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
720 | &ixgbe_msix_clean_rx, 0, | |
721 | adapter->rx_ring[i].name, | |
722 | &(adapter->rx_ring[i])); | |
723 | if (err) { | |
724 | DPRINTK(PROBE, ERR, | |
725 | "request_irq failed for MSIX interrupt " | |
726 | "Error: %d\n", err); | |
727 | goto release_irqs; | |
728 | } | |
729 | ||
730 | adapter->rx_ring[i].eims_value = | |
731 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
732 | adapter->rx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
733 | int_vector++; | |
734 | } | |
735 | ||
736 | sprintf(adapter->lsc_name, "%s-lsc", netdev->name); | |
737 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
738 | &ixgbe_msix_lsc, 0, adapter->lsc_name, netdev); | |
739 | if (err) { | |
740 | DPRINTK(PROBE, ERR, | |
741 | "request_irq for msix_lsc failed: %d\n", err); | |
742 | goto release_irqs; | |
743 | } | |
744 | ||
745 | /* FIXME: implement netif_napi_remove() instead */ | |
746 | adapter->napi.poll = ixgbe_clean_rxonly; | |
747 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; | |
748 | return 0; | |
749 | ||
750 | release_irqs: | |
751 | int_vector--; | |
752 | for (; int_vector >= adapter->num_tx_queues; int_vector--) | |
753 | free_irq(adapter->msix_entries[int_vector].vector, | |
754 | &(adapter->rx_ring[int_vector - | |
755 | adapter->num_tx_queues])); | |
756 | ||
757 | for (; int_vector >= 0; int_vector--) | |
758 | free_irq(adapter->msix_entries[int_vector].vector, | |
759 | &(adapter->tx_ring[int_vector])); | |
760 | out: | |
761 | kfree(adapter->msix_entries); | |
762 | adapter->msix_entries = NULL; | |
763 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
764 | return err; | |
765 | } | |
766 | ||
767 | /** | |
768 | * ixgbe_intr - Interrupt Handler | |
769 | * @irq: interrupt number | |
770 | * @data: pointer to a network interface device structure | |
771 | * @pt_regs: CPU registers structure | |
772 | **/ | |
773 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
774 | { | |
775 | struct net_device *netdev = data; | |
776 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
777 | struct ixgbe_hw *hw = &adapter->hw; | |
778 | u32 eicr; | |
779 | ||
780 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
781 | ||
782 | if (!eicr) | |
783 | return IRQ_NONE; /* Not our interrupt */ | |
784 | ||
785 | if (eicr & IXGBE_EICR_LSC) { | |
786 | adapter->lsc_int++; | |
787 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
788 | mod_timer(&adapter->watchdog_timer, jiffies); | |
789 | } | |
790 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
791 | /* Disable interrupts and register for poll. The flush of the | |
792 | * posted write is intentionally left out. */ | |
9a799d71 AK |
793 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
794 | __netif_rx_schedule(netdev, &adapter->napi); | |
795 | } | |
796 | ||
797 | return IRQ_HANDLED; | |
798 | } | |
799 | ||
800 | /** | |
801 | * ixgbe_request_irq - initialize interrupts | |
802 | * @adapter: board private structure | |
803 | * | |
804 | * Attempts to configure interrupts using the best available | |
805 | * capabilities of the hardware and kernel. | |
806 | **/ | |
807 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter, u32 *num_rx_queues) | |
808 | { | |
809 | struct net_device *netdev = adapter->netdev; | |
810 | int flags, err; | |
28fc1f5a | 811 | irq_handler_t handler = ixgbe_intr; |
9a799d71 AK |
812 | |
813 | flags = IRQF_SHARED; | |
814 | ||
815 | err = ixgbe_setup_msix(adapter); | |
816 | if (!err) | |
817 | goto request_done; | |
818 | ||
819 | /* | |
820 | * if we can't do MSI-X, fall through and try MSI | |
821 | * No need to reallocate memory since we're decreasing the number of | |
822 | * queues. We just won't use the other ones, also it is freed correctly | |
823 | * on ixgbe_remove. | |
824 | */ | |
825 | *num_rx_queues = 1; | |
826 | ||
827 | /* do MSI */ | |
828 | err = pci_enable_msi(adapter->pdev); | |
829 | if (!err) { | |
830 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
831 | flags &= ~IRQF_SHARED; | |
832 | handler = &ixgbe_intr; | |
833 | } | |
834 | ||
835 | err = request_irq(adapter->pdev->irq, handler, flags, | |
836 | netdev->name, netdev); | |
837 | if (err) | |
838 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
839 | ||
840 | request_done: | |
841 | return err; | |
842 | } | |
843 | ||
844 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
845 | { | |
846 | struct net_device *netdev = adapter->netdev; | |
847 | ||
848 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
849 | int i; | |
850 | ||
851 | for (i = 0; i < adapter->num_tx_queues; i++) | |
852 | free_irq(adapter->msix_entries[i].vector, | |
853 | &(adapter->tx_ring[i])); | |
854 | for (i = 0; i < adapter->num_rx_queues; i++) | |
855 | free_irq(adapter->msix_entries[i + | |
856 | adapter->num_tx_queues].vector, | |
857 | &(adapter->rx_ring[i])); | |
858 | i = adapter->num_rx_queues + adapter->num_tx_queues; | |
859 | free_irq(adapter->msix_entries[i].vector, netdev); | |
860 | pci_disable_msix(adapter->pdev); | |
861 | kfree(adapter->msix_entries); | |
862 | adapter->msix_entries = NULL; | |
863 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
864 | return; | |
865 | } | |
866 | ||
867 | free_irq(adapter->pdev->irq, netdev); | |
868 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
869 | pci_disable_msi(adapter->pdev); | |
870 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
871 | } | |
872 | } | |
873 | ||
874 | /** | |
875 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
876 | * @adapter: board private structure | |
877 | **/ | |
878 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
879 | { | |
9a799d71 AK |
880 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
881 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
882 | synchronize_irq(adapter->pdev->irq); | |
883 | } | |
884 | ||
885 | /** | |
886 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
887 | * @adapter: board private structure | |
888 | **/ | |
889 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
890 | { | |
d4f80882 AV |
891 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) |
892 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, | |
893 | (IXGBE_EIMS_ENABLE_MASK & | |
894 | ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC))); | |
895 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
896 | IXGBE_EIMS_ENABLE_MASK); | |
897 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
9a799d71 AK |
898 | } |
899 | ||
900 | /** | |
901 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
902 | * | |
903 | **/ | |
904 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
905 | { | |
906 | int i; | |
907 | struct ixgbe_hw *hw = &adapter->hw; | |
908 | ||
909 | if (adapter->rx_eitr) | |
910 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), | |
911 | EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr)); | |
912 | ||
913 | /* for re-triggering the interrupt in non-NAPI mode */ | |
914 | adapter->rx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
915 | adapter->tx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
916 | ||
917 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0); | |
918 | for (i = 0; i < adapter->num_tx_queues; i++) | |
919 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), i); | |
920 | } | |
921 | ||
922 | /** | |
923 | * ixgbe_configure_tx - Configure 8254x Transmit Unit after Reset | |
924 | * @adapter: board private structure | |
925 | * | |
926 | * Configure the Tx unit of the MAC after a reset. | |
927 | **/ | |
928 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
929 | { | |
930 | u64 tdba; | |
931 | struct ixgbe_hw *hw = &adapter->hw; | |
932 | u32 i, tdlen; | |
933 | ||
934 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
935 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
936 | tdba = adapter->tx_ring[i].dma; | |
937 | tdlen = adapter->tx_ring[i].count * | |
938 | sizeof(union ixgbe_adv_tx_desc); | |
939 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(i), (tdba & DMA_32BIT_MASK)); | |
940 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(i), (tdba >> 32)); | |
941 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(i), tdlen); | |
942 | IXGBE_WRITE_REG(hw, IXGBE_TDH(i), 0); | |
943 | IXGBE_WRITE_REG(hw, IXGBE_TDT(i), 0); | |
944 | adapter->tx_ring[i].head = IXGBE_TDH(i); | |
945 | adapter->tx_ring[i].tail = IXGBE_TDT(i); | |
946 | } | |
947 | ||
948 | IXGBE_WRITE_REG(hw, IXGBE_TIPG, IXGBE_TIPG_FIBER_DEFAULT); | |
949 | } | |
950 | ||
951 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
952 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
953 | ||
954 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
955 | /** | |
956 | * ixgbe_configure_rx - Configure 8254x Receive Unit after Reset | |
957 | * @adapter: board private structure | |
958 | * | |
959 | * Configure the Rx unit of the MAC after a reset. | |
960 | **/ | |
961 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
962 | { | |
963 | u64 rdba; | |
964 | struct ixgbe_hw *hw = &adapter->hw; | |
965 | struct net_device *netdev = adapter->netdev; | |
966 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
967 | u32 rdlen, rxctrl, rxcsum; | |
968 | u32 random[10]; | |
969 | u32 reta, mrqc; | |
970 | int i; | |
971 | u32 fctrl, hlreg0; | |
972 | u32 srrctl; | |
973 | u32 pages; | |
974 | ||
975 | /* Decide whether to use packet split mode or not */ | |
976 | if (netdev->mtu > ETH_DATA_LEN) | |
977 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
978 | else | |
979 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
980 | ||
981 | /* Set the RX buffer length according to the mode */ | |
982 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
983 | adapter->rx_buf_len = IXGBE_RX_HDR_SIZE; | |
984 | } else { | |
985 | if (netdev->mtu <= ETH_DATA_LEN) | |
986 | adapter->rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
987 | else | |
988 | adapter->rx_buf_len = ALIGN(max_frame, 1024); | |
989 | } | |
990 | ||
991 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
992 | fctrl |= IXGBE_FCTRL_BAM; | |
993 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); | |
994 | ||
995 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
996 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
997 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
998 | else | |
999 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
1000 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
1001 | ||
1002 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
1003 | ||
1004 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(0)); | |
1005 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
1006 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
1007 | ||
1008 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1009 | srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1010 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1011 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
1012 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
1013 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
1014 | } else { | |
1015 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1016 | ||
1017 | if (adapter->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1018 | srrctl |= | |
1019 | IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1020 | else | |
1021 | srrctl |= | |
1022 | adapter->rx_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1023 | } | |
1024 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(0), srrctl); | |
1025 | ||
1026 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); | |
1027 | /* disable receives while setting up the descriptors */ | |
1028 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1029 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1030 | ||
1031 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1032 | * the Base and Length of the Rx Descriptor Ring */ | |
1033 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1034 | rdba = adapter->rx_ring[i].dma; | |
1035 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(i), (rdba & DMA_32BIT_MASK)); | |
1036 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(i), (rdba >> 32)); | |
1037 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(i), rdlen); | |
1038 | IXGBE_WRITE_REG(hw, IXGBE_RDH(i), 0); | |
1039 | IXGBE_WRITE_REG(hw, IXGBE_RDT(i), 0); | |
1040 | adapter->rx_ring[i].head = IXGBE_RDH(i); | |
1041 | adapter->rx_ring[i].tail = IXGBE_RDT(i); | |
1042 | } | |
1043 | ||
1044 | if (adapter->num_rx_queues > 1) { | |
1045 | /* Random 40bytes used as random key in RSS hash function */ | |
1046 | get_random_bytes(&random[0], 40); | |
1047 | ||
1048 | switch (adapter->num_rx_queues) { | |
1049 | case 8: | |
1050 | case 4: | |
1051 | /* Bits [3:0] in each byte refers the Rx queue no */ | |
1052 | reta = 0x00010203; | |
1053 | break; | |
1054 | case 2: | |
1055 | reta = 0x00010001; | |
1056 | break; | |
1057 | default: | |
1058 | reta = 0x00000000; | |
1059 | break; | |
1060 | } | |
1061 | ||
1062 | /* Fill out redirection table */ | |
1063 | for (i = 0; i < 32; i++) { | |
1064 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, reta); | |
1065 | if (adapter->num_rx_queues > 4) { | |
1066 | i++; | |
1067 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, | |
1068 | 0x04050607); | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | /* Fill out hash function seeds */ | |
1073 | for (i = 0; i < 10; i++) | |
1074 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, random[i]); | |
1075 | ||
1076 | mrqc = IXGBE_MRQC_RSSEN | |
1077 | /* Perform hash on these packet types */ | |
1078 | | IXGBE_MRQC_RSS_FIELD_IPV4 | |
1079 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1080 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1081 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP | |
1082 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX | |
1083 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1084 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1085 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP | |
1086 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; | |
1087 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); | |
1088 | ||
1089 | /* Multiqueue and packet checksumming are mutually exclusive. */ | |
1090 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1091 | rxcsum |= IXGBE_RXCSUM_PCSD; | |
1092 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1093 | } else { | |
1094 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
1095 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1096 | if (adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1097 | /* Enable IPv4 payload checksum for UDP fragments | |
1098 | * Must be used in conjunction with packet-split. */ | |
1099 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1100 | } else { | |
1101 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1102 | } | |
1103 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1104 | } | |
1105 | /* Enable Receives */ | |
1106 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl); | |
1107 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1108 | } | |
1109 | ||
1110 | static void ixgbe_vlan_rx_register(struct net_device *netdev, | |
1111 | struct vlan_group *grp) | |
1112 | { | |
1113 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1114 | u32 ctrl; | |
1115 | ||
d4f80882 AV |
1116 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1117 | ixgbe_irq_disable(adapter); | |
9a799d71 AK |
1118 | adapter->vlgrp = grp; |
1119 | ||
1120 | if (grp) { | |
1121 | /* enable VLAN tag insert/strip */ | |
1122 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
1123 | ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; | |
1124 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
1125 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
1126 | } | |
1127 | ||
d4f80882 AV |
1128 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1129 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1130 | } |
1131 | ||
1132 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1133 | { | |
1134 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1135 | ||
1136 | /* add VID to filter table */ | |
1137 | ixgbe_set_vfta(&adapter->hw, vid, 0, true); | |
1138 | } | |
1139 | ||
1140 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1141 | { | |
1142 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1143 | ||
d4f80882 AV |
1144 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1145 | ixgbe_irq_disable(adapter); | |
1146 | ||
9a799d71 | 1147 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
d4f80882 AV |
1148 | |
1149 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1150 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1151 | |
1152 | /* remove VID from filter table */ | |
1153 | ixgbe_set_vfta(&adapter->hw, vid, 0, false); | |
1154 | } | |
1155 | ||
1156 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) | |
1157 | { | |
1158 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1159 | ||
1160 | if (adapter->vlgrp) { | |
1161 | u16 vid; | |
1162 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1163 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1164 | continue; | |
1165 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | /** | |
1171 | * ixgbe_set_multi - Multicast and Promiscuous mode set | |
1172 | * @netdev: network interface device structure | |
1173 | * | |
1174 | * The set_multi entry point is called whenever the multicast address | |
1175 | * list or the network interface flags are updated. This routine is | |
1176 | * responsible for configuring the hardware for proper multicast, | |
1177 | * promiscuous mode, and all-multi behavior. | |
1178 | **/ | |
1179 | static void ixgbe_set_multi(struct net_device *netdev) | |
1180 | { | |
1181 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1182 | struct ixgbe_hw *hw = &adapter->hw; | |
1183 | struct dev_mc_list *mc_ptr; | |
1184 | u8 *mta_list; | |
1185 | u32 fctrl; | |
1186 | int i; | |
1187 | ||
1188 | /* Check for Promiscuous and All Multicast modes */ | |
1189 | ||
1190 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
1191 | ||
1192 | if (netdev->flags & IFF_PROMISC) { | |
1193 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1194 | } else if (netdev->flags & IFF_ALLMULTI) { | |
1195 | fctrl |= IXGBE_FCTRL_MPE; | |
1196 | fctrl &= ~IXGBE_FCTRL_UPE; | |
1197 | } else { | |
1198 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1199 | } | |
1200 | ||
1201 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
1202 | ||
1203 | if (netdev->mc_count) { | |
1204 | mta_list = kcalloc(netdev->mc_count, ETH_ALEN, GFP_ATOMIC); | |
1205 | if (!mta_list) | |
1206 | return; | |
1207 | ||
1208 | /* Shared function expects packed array of only addresses. */ | |
1209 | mc_ptr = netdev->mc_list; | |
1210 | ||
1211 | for (i = 0; i < netdev->mc_count; i++) { | |
1212 | if (!mc_ptr) | |
1213 | break; | |
1214 | memcpy(mta_list + (i * ETH_ALEN), mc_ptr->dmi_addr, | |
1215 | ETH_ALEN); | |
1216 | mc_ptr = mc_ptr->next; | |
1217 | } | |
1218 | ||
1219 | ixgbe_update_mc_addr_list(hw, mta_list, i, 0); | |
1220 | kfree(mta_list); | |
1221 | } else { | |
1222 | ixgbe_update_mc_addr_list(hw, NULL, 0, 0); | |
1223 | } | |
1224 | ||
1225 | } | |
1226 | ||
1227 | static void ixgbe_configure(struct ixgbe_adapter *adapter) | |
1228 | { | |
1229 | struct net_device *netdev = adapter->netdev; | |
1230 | int i; | |
1231 | ||
1232 | ixgbe_set_multi(netdev); | |
1233 | ||
1234 | ixgbe_restore_vlan(adapter); | |
1235 | ||
1236 | ixgbe_configure_tx(adapter); | |
1237 | ixgbe_configure_rx(adapter); | |
1238 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1239 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
1240 | (adapter->rx_ring[i].count - 1)); | |
1241 | } | |
1242 | ||
1243 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) | |
1244 | { | |
1245 | struct net_device *netdev = adapter->netdev; | |
1246 | int i; | |
1247 | u32 gpie = 0; | |
1248 | struct ixgbe_hw *hw = &adapter->hw; | |
1249 | u32 txdctl, rxdctl, mhadd; | |
1250 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1251 | ||
5eba3699 AV |
1252 | ixgbe_get_hw_control(adapter); |
1253 | ||
9a799d71 AK |
1254 | if (adapter->flags & (IXGBE_FLAG_MSIX_ENABLED | |
1255 | IXGBE_FLAG_MSI_ENABLED)) { | |
1256 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
1257 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
1258 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); | |
1259 | } else { | |
1260 | /* MSI only */ | |
1261 | gpie = (IXGBE_GPIE_EIAME | | |
1262 | IXGBE_GPIE_PBA_SUPPORT); | |
1263 | } | |
1264 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_GPIE, gpie); | |
1265 | gpie = IXGBE_READ_REG(&adapter->hw, IXGBE_GPIE); | |
1266 | } | |
1267 | ||
1268 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); | |
1269 | ||
1270 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { | |
1271 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
1272 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
1273 | ||
1274 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
1275 | } | |
1276 | ||
1277 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1278 | txdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_TXDCTL(i)); | |
1279 | txdctl |= IXGBE_TXDCTL_ENABLE; | |
1280 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_TXDCTL(i), txdctl); | |
1281 | } | |
1282 | ||
1283 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1284 | rxdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(i)); | |
1285 | rxdctl |= IXGBE_RXDCTL_ENABLE; | |
1286 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(i), rxdctl); | |
1287 | } | |
1288 | /* enable all receives */ | |
1289 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1290 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
1291 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl); | |
1292 | ||
1293 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
1294 | ixgbe_configure_msix(adapter); | |
1295 | else | |
1296 | ixgbe_configure_msi_and_legacy(adapter); | |
1297 | ||
1298 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
1299 | napi_enable(&adapter->napi); | |
1300 | ixgbe_irq_enable(adapter); | |
1301 | ||
1302 | /* bring the link up in the watchdog, this could race with our first | |
1303 | * link up interrupt but shouldn't be a problem */ | |
1304 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1305 | return 0; | |
1306 | } | |
1307 | ||
d4f80882 AV |
1308 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
1309 | { | |
1310 | WARN_ON(in_interrupt()); | |
1311 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) | |
1312 | msleep(1); | |
1313 | ixgbe_down(adapter); | |
1314 | ixgbe_up(adapter); | |
1315 | clear_bit(__IXGBE_RESETTING, &adapter->state); | |
1316 | } | |
1317 | ||
9a799d71 AK |
1318 | int ixgbe_up(struct ixgbe_adapter *adapter) |
1319 | { | |
1320 | /* hardware has been reset, we need to reload some things */ | |
1321 | ixgbe_configure(adapter); | |
1322 | ||
1323 | return ixgbe_up_complete(adapter); | |
1324 | } | |
1325 | ||
1326 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
1327 | { | |
1328 | if (ixgbe_init_hw(&adapter->hw)) | |
1329 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
1330 | ||
1331 | /* reprogram the RAR[0] in case user changed it. */ | |
1332 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
1333 | ||
1334 | } | |
1335 | ||
1336 | #ifdef CONFIG_PM | |
1337 | static int ixgbe_resume(struct pci_dev *pdev) | |
1338 | { | |
1339 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1340 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1341 | u32 err, num_rx_queues = adapter->num_rx_queues; | |
1342 | ||
1343 | pci_set_power_state(pdev, PCI_D0); | |
1344 | pci_restore_state(pdev); | |
1345 | err = pci_enable_device(pdev); | |
1346 | if (err) { | |
1347 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " \ | |
1348 | "suspend\n"); | |
1349 | return err; | |
1350 | } | |
1351 | pci_set_master(pdev); | |
1352 | ||
1353 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1354 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1355 | ||
1356 | if (netif_running(netdev)) { | |
1357 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1358 | if (err) | |
1359 | return err; | |
1360 | } | |
1361 | ||
1362 | ixgbe_reset(adapter); | |
1363 | ||
1364 | if (netif_running(netdev)) | |
1365 | ixgbe_up(adapter); | |
1366 | ||
1367 | netif_device_attach(netdev); | |
1368 | ||
1369 | return 0; | |
1370 | } | |
1371 | #endif | |
1372 | ||
1373 | /** | |
1374 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
1375 | * @adapter: board private structure | |
1376 | * @rx_ring: ring to free buffers from | |
1377 | **/ | |
1378 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
1379 | struct ixgbe_ring *rx_ring) | |
1380 | { | |
1381 | struct pci_dev *pdev = adapter->pdev; | |
1382 | unsigned long size; | |
1383 | unsigned int i; | |
1384 | ||
1385 | /* Free all the Rx ring sk_buffs */ | |
1386 | ||
1387 | for (i = 0; i < rx_ring->count; i++) { | |
1388 | struct ixgbe_rx_buffer *rx_buffer_info; | |
1389 | ||
1390 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
1391 | if (rx_buffer_info->dma) { | |
1392 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
1393 | adapter->rx_buf_len, | |
1394 | PCI_DMA_FROMDEVICE); | |
1395 | rx_buffer_info->dma = 0; | |
1396 | } | |
1397 | if (rx_buffer_info->skb) { | |
1398 | dev_kfree_skb(rx_buffer_info->skb); | |
1399 | rx_buffer_info->skb = NULL; | |
1400 | } | |
1401 | if (!rx_buffer_info->page) | |
1402 | continue; | |
1403 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE, | |
1404 | PCI_DMA_FROMDEVICE); | |
1405 | rx_buffer_info->page_dma = 0; | |
1406 | ||
1407 | put_page(rx_buffer_info->page); | |
1408 | rx_buffer_info->page = NULL; | |
1409 | } | |
1410 | ||
1411 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
1412 | memset(rx_ring->rx_buffer_info, 0, size); | |
1413 | ||
1414 | /* Zero out the descriptor ring */ | |
1415 | memset(rx_ring->desc, 0, rx_ring->size); | |
1416 | ||
1417 | rx_ring->next_to_clean = 0; | |
1418 | rx_ring->next_to_use = 0; | |
1419 | ||
1420 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1421 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1422 | } | |
1423 | ||
1424 | /** | |
1425 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
1426 | * @adapter: board private structure | |
1427 | * @tx_ring: ring to be cleaned | |
1428 | **/ | |
1429 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
1430 | struct ixgbe_ring *tx_ring) | |
1431 | { | |
1432 | struct ixgbe_tx_buffer *tx_buffer_info; | |
1433 | unsigned long size; | |
1434 | unsigned int i; | |
1435 | ||
1436 | /* Free all the Tx ring sk_buffs */ | |
1437 | ||
1438 | for (i = 0; i < tx_ring->count; i++) { | |
1439 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
1440 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
1441 | } | |
1442 | ||
1443 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
1444 | memset(tx_ring->tx_buffer_info, 0, size); | |
1445 | ||
1446 | /* Zero out the descriptor ring */ | |
1447 | memset(tx_ring->desc, 0, tx_ring->size); | |
1448 | ||
1449 | tx_ring->next_to_use = 0; | |
1450 | tx_ring->next_to_clean = 0; | |
1451 | ||
1452 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1453 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1454 | } | |
1455 | ||
1456 | /** | |
1457 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues | |
1458 | * @adapter: board private structure | |
1459 | **/ | |
1460 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) | |
1461 | { | |
1462 | int i; | |
1463 | ||
1464 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1465 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
1466 | } | |
1467 | ||
1468 | /** | |
1469 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues | |
1470 | * @adapter: board private structure | |
1471 | **/ | |
1472 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) | |
1473 | { | |
1474 | int i; | |
1475 | ||
1476 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1477 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
1478 | } | |
1479 | ||
1480 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
1481 | { | |
1482 | struct net_device *netdev = adapter->netdev; | |
1483 | u32 rxctrl; | |
1484 | ||
1485 | /* signal that we are down to the interrupt handler */ | |
1486 | set_bit(__IXGBE_DOWN, &adapter->state); | |
1487 | ||
1488 | /* disable receives */ | |
1489 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXCTRL); | |
1490 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXCTRL, | |
1491 | rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1492 | ||
1493 | netif_tx_disable(netdev); | |
1494 | ||
1495 | /* disable transmits in the hardware */ | |
1496 | ||
1497 | /* flush both disables */ | |
1498 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
1499 | msleep(10); | |
1500 | ||
49d85c50 | 1501 | napi_disable(&adapter->napi); |
49d85c50 | 1502 | |
9a799d71 AK |
1503 | ixgbe_irq_disable(adapter); |
1504 | ||
9a799d71 AK |
1505 | del_timer_sync(&adapter->watchdog_timer); |
1506 | ||
1507 | netif_carrier_off(netdev); | |
1508 | netif_stop_queue(netdev); | |
1509 | ||
1510 | ixgbe_reset(adapter); | |
1511 | ixgbe_clean_all_tx_rings(adapter); | |
1512 | ixgbe_clean_all_rx_rings(adapter); | |
1513 | ||
1514 | } | |
1515 | ||
1516 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
1517 | { | |
1518 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1519 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1520 | #ifdef CONFIG_PM | |
1521 | int retval = 0; | |
1522 | #endif | |
1523 | ||
1524 | netif_device_detach(netdev); | |
1525 | ||
1526 | if (netif_running(netdev)) { | |
1527 | ixgbe_down(adapter); | |
1528 | ixgbe_free_irq(adapter); | |
1529 | } | |
1530 | ||
1531 | #ifdef CONFIG_PM | |
1532 | retval = pci_save_state(pdev); | |
1533 | if (retval) | |
1534 | return retval; | |
1535 | #endif | |
1536 | ||
1537 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1538 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1539 | ||
5eba3699 AV |
1540 | ixgbe_release_hw_control(adapter); |
1541 | ||
9a799d71 AK |
1542 | pci_disable_device(pdev); |
1543 | ||
1544 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
1550 | { | |
1551 | ixgbe_suspend(pdev, PMSG_SUSPEND); | |
1552 | } | |
1553 | ||
1554 | /** | |
1555 | * ixgbe_clean - NAPI Rx polling callback | |
1556 | * @adapter: board private structure | |
1557 | **/ | |
1558 | static int ixgbe_clean(struct napi_struct *napi, int budget) | |
1559 | { | |
1560 | struct ixgbe_adapter *adapter = container_of(napi, | |
1561 | struct ixgbe_adapter, napi); | |
1562 | struct net_device *netdev = adapter->netdev; | |
d2c7ddd6 | 1563 | int tx_cleaned = 0, work_done = 0; |
9a799d71 | 1564 | |
9a799d71 | 1565 | /* In non-MSIX case, there is no multi-Tx/Rx queue */ |
d2c7ddd6 | 1566 | tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
9a799d71 AK |
1567 | ixgbe_clean_rx_irq(adapter, &adapter->rx_ring[0], &work_done, |
1568 | budget); | |
1569 | ||
d2c7ddd6 DM |
1570 | if (tx_cleaned) |
1571 | work_done = budget; | |
1572 | ||
53e52c72 DM |
1573 | /* If budget not fully consumed, exit the polling mode */ |
1574 | if (work_done < budget) { | |
9a799d71 | 1575 | netif_rx_complete(netdev, napi); |
d4f80882 AV |
1576 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1577 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1578 | } |
1579 | ||
1580 | return work_done; | |
1581 | } | |
1582 | ||
1583 | /** | |
1584 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
1585 | * @netdev: network interface device structure | |
1586 | **/ | |
1587 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
1588 | { | |
1589 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1590 | ||
1591 | /* Do the reset outside of interrupt context */ | |
1592 | schedule_work(&adapter->reset_task); | |
1593 | } | |
1594 | ||
1595 | static void ixgbe_reset_task(struct work_struct *work) | |
1596 | { | |
1597 | struct ixgbe_adapter *adapter; | |
1598 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
1599 | ||
1600 | adapter->tx_timeout_count++; | |
1601 | ||
d4f80882 | 1602 | ixgbe_reinit_locked(adapter); |
9a799d71 AK |
1603 | } |
1604 | ||
1605 | /** | |
1606 | * ixgbe_alloc_queues - Allocate memory for all rings | |
1607 | * @adapter: board private structure to initialize | |
1608 | * | |
1609 | * We allocate one ring per queue at run-time since we don't know the | |
1610 | * number of queues at compile-time. The polling_netdev array is | |
1611 | * intended for Multiqueue, but should work fine with a single queue. | |
1612 | **/ | |
1613 | static int __devinit ixgbe_alloc_queues(struct ixgbe_adapter *adapter) | |
1614 | { | |
1615 | int i; | |
1616 | ||
1617 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
1618 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1619 | if (!adapter->tx_ring) | |
1620 | return -ENOMEM; | |
1621 | ||
1622 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1623 | adapter->tx_ring[i].count = IXGBE_DEFAULT_TXD; | |
1624 | ||
1625 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
1626 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1627 | if (!adapter->rx_ring) { | |
1628 | kfree(adapter->tx_ring); | |
1629 | return -ENOMEM; | |
1630 | } | |
1631 | ||
1632 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1633 | adapter->rx_ring[i].adapter = adapter; | |
1634 | adapter->rx_ring[i].itr_register = IXGBE_EITR(i); | |
1635 | adapter->rx_ring[i].count = IXGBE_DEFAULT_RXD; | |
1636 | } | |
1637 | ||
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | /** | |
1642 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
1643 | * @adapter: board private structure to initialize | |
1644 | * | |
1645 | * ixgbe_sw_init initializes the Adapter private data structure. | |
1646 | * Fields are initialized based on PCI device information and | |
1647 | * OS network device settings (MTU size). | |
1648 | **/ | |
1649 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
1650 | { | |
1651 | struct ixgbe_hw *hw = &adapter->hw; | |
1652 | struct pci_dev *pdev = adapter->pdev; | |
1653 | ||
1654 | /* default flow control settings */ | |
1655 | hw->fc.original_type = ixgbe_fc_full; | |
1656 | hw->fc.type = ixgbe_fc_full; | |
1657 | ||
1658 | hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN; | |
1659 | if (hw->mac.ops.reset(hw)) { | |
1660 | dev_err(&pdev->dev, "HW Init failed\n"); | |
1661 | return -EIO; | |
1662 | } | |
3957d63d AK |
1663 | if (hw->mac.ops.setup_link_speed(hw, IXGBE_LINK_SPEED_10GB_FULL, true, |
1664 | false)) { | |
9a799d71 AK |
1665 | dev_err(&pdev->dev, "Link Speed setup failed\n"); |
1666 | return -EIO; | |
1667 | } | |
1668 | ||
1669 | /* initialize eeprom parameters */ | |
1670 | if (ixgbe_init_eeprom(hw)) { | |
1671 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); | |
1672 | return -EIO; | |
1673 | } | |
1674 | ||
1675 | /* Set the default values */ | |
1676 | adapter->num_rx_queues = IXGBE_DEFAULT_RXQ; | |
1677 | adapter->num_tx_queues = 1; | |
1678 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; | |
1679 | ||
1680 | if (ixgbe_alloc_queues(adapter)) { | |
1681 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1682 | return -ENOMEM; | |
1683 | } | |
1684 | ||
9a799d71 AK |
1685 | set_bit(__IXGBE_DOWN, &adapter->state); |
1686 | ||
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | /** | |
1691 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
1692 | * @adapter: board private structure | |
1693 | * @txdr: tx descriptor ring (for a specific queue) to setup | |
1694 | * | |
1695 | * Return 0 on success, negative on failure | |
1696 | **/ | |
1697 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
1698 | struct ixgbe_ring *txdr) | |
1699 | { | |
1700 | struct pci_dev *pdev = adapter->pdev; | |
1701 | int size; | |
1702 | ||
1703 | size = sizeof(struct ixgbe_tx_buffer) * txdr->count; | |
1704 | txdr->tx_buffer_info = vmalloc(size); | |
1705 | if (!txdr->tx_buffer_info) { | |
1706 | DPRINTK(PROBE, ERR, | |
1707 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1708 | return -ENOMEM; | |
1709 | } | |
1710 | memset(txdr->tx_buffer_info, 0, size); | |
1711 | ||
1712 | /* round up to nearest 4K */ | |
1713 | txdr->size = txdr->count * sizeof(union ixgbe_adv_tx_desc); | |
1714 | txdr->size = ALIGN(txdr->size, 4096); | |
1715 | ||
1716 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
1717 | if (!txdr->desc) { | |
1718 | vfree(txdr->tx_buffer_info); | |
1719 | DPRINTK(PROBE, ERR, | |
1720 | "Memory allocation failed for the tx desc ring\n"); | |
1721 | return -ENOMEM; | |
1722 | } | |
1723 | ||
1724 | txdr->adapter = adapter; | |
1725 | txdr->next_to_use = 0; | |
1726 | txdr->next_to_clean = 0; | |
1727 | txdr->work_limit = txdr->count; | |
9a799d71 AK |
1728 | |
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | /** | |
1733 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
1734 | * @adapter: board private structure | |
1735 | * @rxdr: rx descriptor ring (for a specific queue) to setup | |
1736 | * | |
1737 | * Returns 0 on success, negative on failure | |
1738 | **/ | |
1739 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
1740 | struct ixgbe_ring *rxdr) | |
1741 | { | |
1742 | struct pci_dev *pdev = adapter->pdev; | |
1743 | int size, desc_len; | |
1744 | ||
1745 | size = sizeof(struct ixgbe_rx_buffer) * rxdr->count; | |
1746 | rxdr->rx_buffer_info = vmalloc(size); | |
1747 | if (!rxdr->rx_buffer_info) { | |
1748 | DPRINTK(PROBE, ERR, | |
1749 | "vmalloc allocation failed for the rx desc ring\n"); | |
1750 | return -ENOMEM; | |
1751 | } | |
1752 | memset(rxdr->rx_buffer_info, 0, size); | |
1753 | ||
1754 | desc_len = sizeof(union ixgbe_adv_rx_desc); | |
1755 | ||
1756 | /* Round up to nearest 4K */ | |
1757 | rxdr->size = rxdr->count * desc_len; | |
1758 | rxdr->size = ALIGN(rxdr->size, 4096); | |
1759 | ||
1760 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1761 | ||
1762 | if (!rxdr->desc) { | |
1763 | DPRINTK(PROBE, ERR, | |
1764 | "Memory allocation failed for the rx desc ring\n"); | |
1765 | vfree(rxdr->rx_buffer_info); | |
1766 | return -ENOMEM; | |
1767 | } | |
1768 | ||
1769 | rxdr->next_to_clean = 0; | |
1770 | rxdr->next_to_use = 0; | |
1771 | rxdr->adapter = adapter; | |
1772 | ||
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | /** | |
1777 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
1778 | * @adapter: board private structure | |
1779 | * @tx_ring: Tx descriptor ring for a specific queue | |
1780 | * | |
1781 | * Free all transmit software resources | |
1782 | **/ | |
1783 | static void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, | |
1784 | struct ixgbe_ring *tx_ring) | |
1785 | { | |
1786 | struct pci_dev *pdev = adapter->pdev; | |
1787 | ||
1788 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
1789 | ||
1790 | vfree(tx_ring->tx_buffer_info); | |
1791 | tx_ring->tx_buffer_info = NULL; | |
1792 | ||
1793 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1794 | ||
1795 | tx_ring->desc = NULL; | |
1796 | } | |
1797 | ||
1798 | /** | |
1799 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
1800 | * @adapter: board private structure | |
1801 | * | |
1802 | * Free all transmit software resources | |
1803 | **/ | |
1804 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
1805 | { | |
1806 | int i; | |
1807 | ||
1808 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1809 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
1810 | } | |
1811 | ||
1812 | /** | |
1813 | * ixgbe_free_rx_resources - Free Rx Resources | |
1814 | * @adapter: board private structure | |
1815 | * @rx_ring: ring to clean the resources from | |
1816 | * | |
1817 | * Free all receive software resources | |
1818 | **/ | |
1819 | static void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, | |
1820 | struct ixgbe_ring *rx_ring) | |
1821 | { | |
1822 | struct pci_dev *pdev = adapter->pdev; | |
1823 | ||
1824 | ixgbe_clean_rx_ring(adapter, rx_ring); | |
1825 | ||
1826 | vfree(rx_ring->rx_buffer_info); | |
1827 | rx_ring->rx_buffer_info = NULL; | |
1828 | ||
1829 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1830 | ||
1831 | rx_ring->desc = NULL; | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
1836 | * @adapter: board private structure | |
1837 | * | |
1838 | * Free all receive software resources | |
1839 | **/ | |
1840 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
1841 | { | |
1842 | int i; | |
1843 | ||
1844 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1845 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
1846 | } | |
1847 | ||
1848 | /** | |
1849 | * ixgbe_setup_all_tx_resources - wrapper to allocate Tx resources | |
1850 | * (Descriptors) for all queues | |
1851 | * @adapter: board private structure | |
1852 | * | |
1853 | * If this function returns with an error, then it's possible one or | |
1854 | * more of the rings is populated (while the rest are not). It is the | |
1855 | * callers duty to clean those orphaned rings. | |
1856 | * | |
1857 | * Return 0 on success, negative on failure | |
1858 | **/ | |
1859 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
1860 | { | |
1861 | int i, err = 0; | |
1862 | ||
1863 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1864 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
1865 | if (err) { | |
1866 | DPRINTK(PROBE, ERR, | |
1867 | "Allocation for Tx Queue %u failed\n", i); | |
1868 | break; | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | return err; | |
1873 | } | |
1874 | ||
1875 | /** | |
1876 | * ixgbe_setup_all_rx_resources - wrapper to allocate Rx resources | |
1877 | * (Descriptors) for all queues | |
1878 | * @adapter: board private structure | |
1879 | * | |
1880 | * If this function returns with an error, then it's possible one or | |
1881 | * more of the rings is populated (while the rest are not). It is the | |
1882 | * callers duty to clean those orphaned rings. | |
1883 | * | |
1884 | * Return 0 on success, negative on failure | |
1885 | **/ | |
1886 | ||
1887 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
1888 | { | |
1889 | int i, err = 0; | |
1890 | ||
1891 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1892 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
1893 | if (err) { | |
1894 | DPRINTK(PROBE, ERR, | |
1895 | "Allocation for Rx Queue %u failed\n", i); | |
1896 | break; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | return err; | |
1901 | } | |
1902 | ||
1903 | /** | |
1904 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
1905 | * @netdev: network interface device structure | |
1906 | * @new_mtu: new value for maximum frame size | |
1907 | * | |
1908 | * Returns 0 on success, negative on failure | |
1909 | **/ | |
1910 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
1911 | { | |
1912 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1913 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
1914 | ||
1915 | if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) || | |
1916 | (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
1917 | return -EINVAL; | |
1918 | ||
1919 | netdev->mtu = new_mtu; | |
1920 | ||
d4f80882 AV |
1921 | if (netif_running(netdev)) |
1922 | ixgbe_reinit_locked(adapter); | |
9a799d71 AK |
1923 | |
1924 | return 0; | |
1925 | } | |
1926 | ||
1927 | /** | |
1928 | * ixgbe_open - Called when a network interface is made active | |
1929 | * @netdev: network interface device structure | |
1930 | * | |
1931 | * Returns 0 on success, negative value on failure | |
1932 | * | |
1933 | * The open entry point is called when a network interface is made | |
1934 | * active by the system (IFF_UP). At this point all resources needed | |
1935 | * for transmit and receive operations are allocated, the interrupt | |
1936 | * handler is registered with the OS, the watchdog timer is started, | |
1937 | * and the stack is notified that the interface is ready. | |
1938 | **/ | |
1939 | static int ixgbe_open(struct net_device *netdev) | |
1940 | { | |
1941 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1942 | int err; | |
9a799d71 AK |
1943 | u32 num_rx_queues = adapter->num_rx_queues; |
1944 | ||
9a799d71 AK |
1945 | try_intr_reinit: |
1946 | /* allocate transmit descriptors */ | |
1947 | err = ixgbe_setup_all_tx_resources(adapter); | |
1948 | if (err) | |
1949 | goto err_setup_tx; | |
1950 | ||
1951 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { | |
1952 | num_rx_queues = 1; | |
1953 | adapter->num_rx_queues = num_rx_queues; | |
1954 | } | |
1955 | ||
1956 | /* allocate receive descriptors */ | |
1957 | err = ixgbe_setup_all_rx_resources(adapter); | |
1958 | if (err) | |
1959 | goto err_setup_rx; | |
1960 | ||
1961 | ixgbe_configure(adapter); | |
1962 | ||
1963 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1964 | if (err) | |
1965 | goto err_req_irq; | |
1966 | ||
1967 | /* ixgbe_request might have reduced num_rx_queues */ | |
1968 | if (num_rx_queues < adapter->num_rx_queues) { | |
1969 | /* We didn't get MSI-X, so we need to release everything, | |
1970 | * set our Rx queue count to num_rx_queues, and redo the | |
1971 | * whole init process. | |
1972 | */ | |
1973 | ixgbe_free_irq(adapter); | |
1974 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1975 | pci_disable_msi(adapter->pdev); | |
1976 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
1977 | } | |
1978 | ixgbe_free_all_rx_resources(adapter); | |
1979 | ixgbe_free_all_tx_resources(adapter); | |
1980 | adapter->num_rx_queues = num_rx_queues; | |
1981 | ||
1982 | /* Reset the hardware, and start over. */ | |
1983 | ixgbe_reset(adapter); | |
1984 | ||
1985 | goto try_intr_reinit; | |
1986 | } | |
1987 | ||
1988 | err = ixgbe_up_complete(adapter); | |
1989 | if (err) | |
1990 | goto err_up; | |
1991 | ||
1992 | return 0; | |
1993 | ||
1994 | err_up: | |
5eba3699 | 1995 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
1996 | ixgbe_free_irq(adapter); |
1997 | err_req_irq: | |
1998 | ixgbe_free_all_rx_resources(adapter); | |
1999 | err_setup_rx: | |
2000 | ixgbe_free_all_tx_resources(adapter); | |
2001 | err_setup_tx: | |
2002 | ixgbe_reset(adapter); | |
2003 | ||
2004 | return err; | |
2005 | } | |
2006 | ||
2007 | /** | |
2008 | * ixgbe_close - Disables a network interface | |
2009 | * @netdev: network interface device structure | |
2010 | * | |
2011 | * Returns 0, this is not allowed to fail | |
2012 | * | |
2013 | * The close entry point is called when an interface is de-activated | |
2014 | * by the OS. The hardware is still under the drivers control, but | |
2015 | * needs to be disabled. A global MAC reset is issued to stop the | |
2016 | * hardware, and all transmit and receive resources are freed. | |
2017 | **/ | |
2018 | static int ixgbe_close(struct net_device *netdev) | |
2019 | { | |
2020 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
9a799d71 AK |
2021 | |
2022 | ixgbe_down(adapter); | |
2023 | ixgbe_free_irq(adapter); | |
2024 | ||
2025 | ixgbe_free_all_tx_resources(adapter); | |
2026 | ixgbe_free_all_rx_resources(adapter); | |
2027 | ||
5eba3699 | 2028 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2029 | |
2030 | return 0; | |
2031 | } | |
2032 | ||
2033 | /** | |
2034 | * ixgbe_update_stats - Update the board statistics counters. | |
2035 | * @adapter: board private structure | |
2036 | **/ | |
2037 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
2038 | { | |
2039 | struct ixgbe_hw *hw = &adapter->hw; | |
6f11eef7 AV |
2040 | u64 total_mpc = 0; |
2041 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; | |
9a799d71 AK |
2042 | |
2043 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
6f11eef7 AV |
2044 | for (i = 0; i < 8; i++) { |
2045 | /* for packet buffers not used, the register should read 0 */ | |
2046 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
2047 | missed_rx += mpc; | |
2048 | adapter->stats.mpc[i] += mpc; | |
2049 | total_mpc += adapter->stats.mpc[i]; | |
2050 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
2051 | } | |
2052 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); | |
2053 | /* work around hardware counting issue */ | |
2054 | adapter->stats.gprc -= missed_rx; | |
2055 | ||
2056 | /* 82598 hardware only has a 32 bit counter in the high register */ | |
9a799d71 | 2057 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); |
6f11eef7 AV |
2058 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); |
2059 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
9a799d71 AK |
2060 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
2061 | adapter->stats.bprc += bprc; | |
2062 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
2063 | adapter->stats.mprc -= bprc; | |
2064 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); | |
2065 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
2066 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
2067 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
2068 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
2069 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
2070 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
9a799d71 AK |
2071 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
2072 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
9a799d71 | 2073 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); |
6f11eef7 AV |
2074 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
2075 | adapter->stats.lxontxc += lxon; | |
2076 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
2077 | adapter->stats.lxofftxc += lxoff; | |
9a799d71 AK |
2078 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
2079 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
6f11eef7 AV |
2080 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
2081 | /* | |
2082 | * 82598 errata - tx of flow control packets is included in tx counters | |
2083 | */ | |
2084 | xon_off_tot = lxon + lxoff; | |
2085 | adapter->stats.gptc -= xon_off_tot; | |
2086 | adapter->stats.mptc -= xon_off_tot; | |
2087 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); | |
9a799d71 AK |
2088 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
2089 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
2090 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
9a799d71 AK |
2091 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
2092 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
6f11eef7 | 2093 | adapter->stats.ptc64 -= xon_off_tot; |
9a799d71 AK |
2094 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
2095 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
2096 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
2097 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
2098 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
9a799d71 AK |
2099 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
2100 | ||
2101 | /* Fill out the OS statistics structure */ | |
9a799d71 AK |
2102 | adapter->net_stats.multicast = adapter->stats.mprc; |
2103 | ||
2104 | /* Rx Errors */ | |
2105 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
2106 | adapter->stats.rlec; | |
2107 | adapter->net_stats.rx_dropped = 0; | |
2108 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
2109 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
6f11eef7 | 2110 | adapter->net_stats.rx_missed_errors = total_mpc; |
9a799d71 AK |
2111 | } |
2112 | ||
2113 | /** | |
2114 | * ixgbe_watchdog - Timer Call-back | |
2115 | * @data: pointer to adapter cast into an unsigned long | |
2116 | **/ | |
2117 | static void ixgbe_watchdog(unsigned long data) | |
2118 | { | |
2119 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
2120 | struct net_device *netdev = adapter->netdev; | |
2121 | bool link_up; | |
2122 | u32 link_speed = 0; | |
2123 | ||
3957d63d | 2124 | adapter->hw.mac.ops.check_link(&adapter->hw, &(link_speed), &link_up); |
9a799d71 AK |
2125 | |
2126 | if (link_up) { | |
2127 | if (!netif_carrier_ok(netdev)) { | |
2128 | u32 frctl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
2129 | u32 rmcs = IXGBE_READ_REG(&adapter->hw, IXGBE_RMCS); | |
2130 | #define FLOW_RX (frctl & IXGBE_FCTRL_RFCE) | |
2131 | #define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X) | |
2132 | DPRINTK(LINK, INFO, "NIC Link is Up %s, " | |
2133 | "Flow Control: %s\n", | |
2134 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
2135 | "10 Gbps" : | |
2136 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
2137 | "1 Gpbs" : "unknown speed")), | |
2138 | ((FLOW_RX && FLOW_TX) ? "RX/TX" : | |
2139 | (FLOW_RX ? "RX" : | |
2140 | (FLOW_TX ? "TX" : "None")))); | |
2141 | ||
2142 | netif_carrier_on(netdev); | |
2143 | netif_wake_queue(netdev); | |
2144 | } else { | |
2145 | /* Force detection of hung controller */ | |
2146 | adapter->detect_tx_hung = true; | |
2147 | } | |
2148 | } else { | |
2149 | if (netif_carrier_ok(netdev)) { | |
2150 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2151 | netif_carrier_off(netdev); | |
2152 | netif_stop_queue(netdev); | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | ixgbe_update_stats(adapter); | |
2157 | ||
2158 | /* Reset the timer */ | |
2159 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
2160 | mod_timer(&adapter->watchdog_timer, | |
2161 | round_jiffies(jiffies + 2 * HZ)); | |
2162 | } | |
2163 | ||
9a799d71 AK |
2164 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
2165 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, | |
2166 | u32 tx_flags, u8 *hdr_len) | |
2167 | { | |
2168 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2169 | unsigned int i; | |
2170 | int err; | |
2171 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2172 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2173 | u32 mss_l4len_idx = 0, l4len; | |
2174 | *hdr_len = 0; | |
2175 | ||
2176 | if (skb_is_gso(skb)) { | |
2177 | if (skb_header_cloned(skb)) { | |
2178 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2179 | if (err) | |
2180 | return err; | |
2181 | } | |
2182 | l4len = tcp_hdrlen(skb); | |
2183 | *hdr_len += l4len; | |
2184 | ||
8327d000 | 2185 | if (skb->protocol == htons(ETH_P_IP)) { |
9a799d71 AK |
2186 | struct iphdr *iph = ip_hdr(skb); |
2187 | iph->tot_len = 0; | |
2188 | iph->check = 0; | |
2189 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2190 | iph->daddr, 0, | |
2191 | IPPROTO_TCP, | |
2192 | 0); | |
2193 | adapter->hw_tso_ctxt++; | |
2194 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
2195 | ipv6_hdr(skb)->payload_len = 0; | |
2196 | tcp_hdr(skb)->check = | |
2197 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2198 | &ipv6_hdr(skb)->daddr, | |
2199 | 0, IPPROTO_TCP, 0); | |
2200 | adapter->hw_tso6_ctxt++; | |
2201 | } | |
2202 | ||
2203 | i = tx_ring->next_to_use; | |
2204 | ||
2205 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2206 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2207 | ||
2208 | /* VLAN MACLEN IPLEN */ | |
2209 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2210 | vlan_macip_lens |= | |
2211 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2212 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
2213 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2214 | *hdr_len += skb_network_offset(skb); | |
2215 | vlan_macip_lens |= | |
2216 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2217 | *hdr_len += | |
2218 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2219 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2220 | context_desc->seqnum_seed = 0; | |
2221 | ||
2222 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2223 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2224 | IXGBE_ADVTXD_DTYP_CTXT); | |
2225 | ||
8327d000 | 2226 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2227 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
2228 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2229 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2230 | ||
2231 | /* MSS L4LEN IDX */ | |
2232 | mss_l4len_idx |= | |
2233 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
2234 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
2235 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2236 | ||
2237 | tx_buffer_info->time_stamp = jiffies; | |
2238 | tx_buffer_info->next_to_watch = i; | |
2239 | ||
2240 | i++; | |
2241 | if (i == tx_ring->count) | |
2242 | i = 0; | |
2243 | tx_ring->next_to_use = i; | |
2244 | ||
2245 | return true; | |
2246 | } | |
2247 | return false; | |
2248 | } | |
2249 | ||
2250 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
2251 | struct ixgbe_ring *tx_ring, | |
2252 | struct sk_buff *skb, u32 tx_flags) | |
2253 | { | |
2254 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2255 | unsigned int i; | |
2256 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2257 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2258 | ||
2259 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
2260 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
2261 | i = tx_ring->next_to_use; | |
2262 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2263 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2264 | ||
2265 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2266 | vlan_macip_lens |= | |
2267 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2268 | vlan_macip_lens |= (skb_network_offset(skb) << | |
2269 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2270 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2271 | vlan_macip_lens |= (skb_transport_header(skb) - | |
2272 | skb_network_header(skb)); | |
2273 | ||
2274 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2275 | context_desc->seqnum_seed = 0; | |
2276 | ||
2277 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2278 | IXGBE_ADVTXD_DTYP_CTXT); | |
2279 | ||
2280 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
8327d000 | 2281 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2282 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
2283 | ||
2284 | if (skb->sk->sk_protocol == IPPROTO_TCP) | |
2285 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2286 | } | |
2287 | ||
2288 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2289 | context_desc->mss_l4len_idx = 0; | |
2290 | ||
2291 | tx_buffer_info->time_stamp = jiffies; | |
2292 | tx_buffer_info->next_to_watch = i; | |
2293 | adapter->hw_csum_tx_good++; | |
2294 | i++; | |
2295 | if (i == tx_ring->count) | |
2296 | i = 0; | |
2297 | tx_ring->next_to_use = i; | |
2298 | ||
2299 | return true; | |
2300 | } | |
2301 | return false; | |
2302 | } | |
2303 | ||
2304 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
2305 | struct ixgbe_ring *tx_ring, | |
2306 | struct sk_buff *skb, unsigned int first) | |
2307 | { | |
2308 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2309 | unsigned int len = skb->len; | |
2310 | unsigned int offset = 0, size, count = 0, i; | |
2311 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2312 | unsigned int f; | |
2313 | ||
2314 | len -= skb->data_len; | |
2315 | ||
2316 | i = tx_ring->next_to_use; | |
2317 | ||
2318 | while (len) { | |
2319 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2320 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2321 | ||
2322 | tx_buffer_info->length = size; | |
2323 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
2324 | skb->data + offset, | |
2325 | size, PCI_DMA_TODEVICE); | |
2326 | tx_buffer_info->time_stamp = jiffies; | |
2327 | tx_buffer_info->next_to_watch = i; | |
2328 | ||
2329 | len -= size; | |
2330 | offset += size; | |
2331 | count++; | |
2332 | i++; | |
2333 | if (i == tx_ring->count) | |
2334 | i = 0; | |
2335 | } | |
2336 | ||
2337 | for (f = 0; f < nr_frags; f++) { | |
2338 | struct skb_frag_struct *frag; | |
2339 | ||
2340 | frag = &skb_shinfo(skb)->frags[f]; | |
2341 | len = frag->size; | |
2342 | offset = frag->page_offset; | |
2343 | ||
2344 | while (len) { | |
2345 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2346 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2347 | ||
2348 | tx_buffer_info->length = size; | |
2349 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
2350 | frag->page, | |
2351 | offset, | |
2352 | size, PCI_DMA_TODEVICE); | |
2353 | tx_buffer_info->time_stamp = jiffies; | |
2354 | tx_buffer_info->next_to_watch = i; | |
2355 | ||
2356 | len -= size; | |
2357 | offset += size; | |
2358 | count++; | |
2359 | i++; | |
2360 | if (i == tx_ring->count) | |
2361 | i = 0; | |
2362 | } | |
2363 | } | |
2364 | if (i == 0) | |
2365 | i = tx_ring->count - 1; | |
2366 | else | |
2367 | i = i - 1; | |
2368 | tx_ring->tx_buffer_info[i].skb = skb; | |
2369 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
2370 | ||
2371 | return count; | |
2372 | } | |
2373 | ||
2374 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
2375 | struct ixgbe_ring *tx_ring, | |
2376 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
2377 | { | |
2378 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
2379 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2380 | u32 olinfo_status = 0, cmd_type_len = 0; | |
2381 | unsigned int i; | |
2382 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
2383 | ||
2384 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
2385 | ||
2386 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
2387 | ||
2388 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2389 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
2390 | ||
2391 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
2392 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
2393 | ||
2394 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2395 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2396 | ||
2397 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
2398 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
2399 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2400 | ||
2401 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
2402 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2403 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2404 | ||
2405 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
2406 | ||
2407 | i = tx_ring->next_to_use; | |
2408 | while (count--) { | |
2409 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2410 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
2411 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
2412 | tx_desc->read.cmd_type_len = | |
2413 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
2414 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2415 | ||
2416 | i++; | |
2417 | if (i == tx_ring->count) | |
2418 | i = 0; | |
2419 | } | |
2420 | ||
2421 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
2422 | ||
2423 | /* | |
2424 | * Force memory writes to complete before letting h/w | |
2425 | * know there are new descriptors to fetch. (Only | |
2426 | * applicable for weak-ordered memory model archs, | |
2427 | * such as IA-64). | |
2428 | */ | |
2429 | wmb(); | |
2430 | ||
2431 | tx_ring->next_to_use = i; | |
2432 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2433 | } | |
2434 | ||
e092be60 AV |
2435 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
2436 | struct ixgbe_ring *tx_ring, int size) | |
2437 | { | |
2438 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2439 | ||
2440 | netif_stop_queue(netdev); | |
2441 | /* Herbert's original patch had: | |
2442 | * smp_mb__after_netif_stop_queue(); | |
2443 | * but since that doesn't exist yet, just open code it. */ | |
2444 | smp_mb(); | |
2445 | ||
2446 | /* We need to check again in a case another CPU has just | |
2447 | * made room available. */ | |
2448 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
2449 | return -EBUSY; | |
2450 | ||
2451 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
2452 | netif_wake_queue(netdev); | |
2453 | ++adapter->restart_queue; | |
2454 | return 0; | |
2455 | } | |
2456 | ||
2457 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, | |
2458 | struct ixgbe_ring *tx_ring, int size) | |
2459 | { | |
2460 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
2461 | return 0; | |
2462 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); | |
2463 | } | |
2464 | ||
2465 | ||
9a799d71 AK |
2466 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
2467 | { | |
2468 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2469 | struct ixgbe_ring *tx_ring; | |
2470 | unsigned int len = skb->len; | |
2471 | unsigned int first; | |
2472 | unsigned int tx_flags = 0; | |
9a799d71 AK |
2473 | u8 hdr_len; |
2474 | int tso; | |
2475 | unsigned int mss = 0; | |
2476 | int count = 0; | |
2477 | unsigned int f; | |
2478 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2479 | len -= skb->data_len; | |
2480 | ||
2481 | tx_ring = adapter->tx_ring; | |
2482 | ||
2483 | if (skb->len <= 0) { | |
2484 | dev_kfree_skb(skb); | |
2485 | return NETDEV_TX_OK; | |
2486 | } | |
2487 | mss = skb_shinfo(skb)->gso_size; | |
2488 | ||
2489 | if (mss) | |
2490 | count++; | |
2491 | else if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2492 | count++; | |
2493 | ||
2494 | count += TXD_USE_COUNT(len); | |
2495 | for (f = 0; f < nr_frags; f++) | |
2496 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
2497 | ||
e092be60 | 2498 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
9a799d71 | 2499 | adapter->tx_busy++; |
9a799d71 AK |
2500 | return NETDEV_TX_BUSY; |
2501 | } | |
9a799d71 AK |
2502 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
2503 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
2504 | tx_flags |= (vlan_tx_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT); | |
2505 | } | |
2506 | ||
8327d000 | 2507 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2508 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
2509 | first = tx_ring->next_to_use; | |
2510 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
2511 | if (tso < 0) { | |
2512 | dev_kfree_skb_any(skb); | |
2513 | return NETDEV_TX_OK; | |
2514 | } | |
2515 | ||
2516 | if (tso) | |
2517 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
2518 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2519 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2520 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
2521 | ||
2522 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, | |
2523 | ixgbe_tx_map(adapter, tx_ring, skb, first), | |
2524 | skb->len, hdr_len); | |
2525 | ||
2526 | netdev->trans_start = jiffies; | |
2527 | ||
e092be60 | 2528 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); |
9a799d71 AK |
2529 | |
2530 | return NETDEV_TX_OK; | |
2531 | } | |
2532 | ||
2533 | /** | |
2534 | * ixgbe_get_stats - Get System Network Statistics | |
2535 | * @netdev: network interface device structure | |
2536 | * | |
2537 | * Returns the address of the device statistics structure. | |
2538 | * The statistics are actually updated from the timer callback. | |
2539 | **/ | |
2540 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
2541 | { | |
2542 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2543 | ||
2544 | /* only return the current stats */ | |
2545 | return &adapter->net_stats; | |
2546 | } | |
2547 | ||
2548 | /** | |
2549 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
2550 | * @netdev: network interface device structure | |
2551 | * @p: pointer to an address structure | |
2552 | * | |
2553 | * Returns 0 on success, negative on failure | |
2554 | **/ | |
2555 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
2556 | { | |
2557 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2558 | struct sockaddr *addr = p; | |
2559 | ||
2560 | if (!is_valid_ether_addr(addr->sa_data)) | |
2561 | return -EADDRNOTAVAIL; | |
2562 | ||
2563 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2564 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
2565 | ||
2566 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
2567 | ||
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2572 | /* | |
2573 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2574 | * without having to re-enable interrupts. It's not called while | |
2575 | * the interrupt routine is executing. | |
2576 | */ | |
2577 | static void ixgbe_netpoll(struct net_device *netdev) | |
2578 | { | |
2579 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2580 | ||
2581 | disable_irq(adapter->pdev->irq); | |
2582 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
2583 | ixgbe_intr(adapter->pdev->irq, netdev); | |
2584 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
2585 | enable_irq(adapter->pdev->irq); | |
2586 | } | |
2587 | #endif | |
2588 | ||
2589 | /** | |
2590 | * ixgbe_probe - Device Initialization Routine | |
2591 | * @pdev: PCI device information struct | |
2592 | * @ent: entry in ixgbe_pci_tbl | |
2593 | * | |
2594 | * Returns 0 on success, negative on failure | |
2595 | * | |
2596 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
2597 | * The OS initialization, configuring of the adapter private structure, | |
2598 | * and a hardware reset occur. | |
2599 | **/ | |
2600 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
2601 | const struct pci_device_id *ent) | |
2602 | { | |
2603 | struct net_device *netdev; | |
2604 | struct ixgbe_adapter *adapter = NULL; | |
2605 | struct ixgbe_hw *hw; | |
2606 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
2607 | unsigned long mmio_start, mmio_len; | |
2608 | static int cards_found; | |
2609 | int i, err, pci_using_dac; | |
2610 | u16 link_status, link_speed, link_width; | |
2611 | u32 part_num; | |
2612 | ||
2613 | err = pci_enable_device(pdev); | |
2614 | if (err) | |
2615 | return err; | |
2616 | ||
2617 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
2618 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
2619 | pci_using_dac = 1; | |
2620 | } else { | |
2621 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
2622 | if (err) { | |
2623 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
2624 | if (err) { | |
2625 | dev_err(&pdev->dev, "No usable DMA " | |
2626 | "configuration, aborting\n"); | |
2627 | goto err_dma; | |
2628 | } | |
2629 | } | |
2630 | pci_using_dac = 0; | |
2631 | } | |
2632 | ||
2633 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
2634 | if (err) { | |
2635 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
2636 | goto err_pci_reg; | |
2637 | } | |
2638 | ||
2639 | pci_set_master(pdev); | |
2640 | ||
2641 | netdev = alloc_etherdev(sizeof(struct ixgbe_adapter)); | |
2642 | if (!netdev) { | |
2643 | err = -ENOMEM; | |
2644 | goto err_alloc_etherdev; | |
2645 | } | |
2646 | ||
9a799d71 AK |
2647 | SET_NETDEV_DEV(netdev, &pdev->dev); |
2648 | ||
2649 | pci_set_drvdata(pdev, netdev); | |
2650 | adapter = netdev_priv(netdev); | |
2651 | ||
2652 | adapter->netdev = netdev; | |
2653 | adapter->pdev = pdev; | |
2654 | hw = &adapter->hw; | |
2655 | hw->back = adapter; | |
2656 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
2657 | ||
2658 | mmio_start = pci_resource_start(pdev, 0); | |
2659 | mmio_len = pci_resource_len(pdev, 0); | |
2660 | ||
2661 | hw->hw_addr = ioremap(mmio_start, mmio_len); | |
2662 | if (!hw->hw_addr) { | |
2663 | err = -EIO; | |
2664 | goto err_ioremap; | |
2665 | } | |
2666 | ||
2667 | for (i = 1; i <= 5; i++) { | |
2668 | if (pci_resource_len(pdev, i) == 0) | |
2669 | continue; | |
2670 | } | |
2671 | ||
2672 | netdev->open = &ixgbe_open; | |
2673 | netdev->stop = &ixgbe_close; | |
2674 | netdev->hard_start_xmit = &ixgbe_xmit_frame; | |
2675 | netdev->get_stats = &ixgbe_get_stats; | |
2676 | netdev->set_multicast_list = &ixgbe_set_multi; | |
2677 | netdev->set_mac_address = &ixgbe_set_mac; | |
2678 | netdev->change_mtu = &ixgbe_change_mtu; | |
2679 | ixgbe_set_ethtool_ops(netdev); | |
2680 | netdev->tx_timeout = &ixgbe_tx_timeout; | |
2681 | netdev->watchdog_timeo = 5 * HZ; | |
2682 | netif_napi_add(netdev, &adapter->napi, ixgbe_clean, 64); | |
2683 | netdev->vlan_rx_register = ixgbe_vlan_rx_register; | |
2684 | netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid; | |
2685 | netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid; | |
2686 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2687 | netdev->poll_controller = ixgbe_netpoll; | |
2688 | #endif | |
2689 | strcpy(netdev->name, pci_name(pdev)); | |
2690 | ||
2691 | netdev->mem_start = mmio_start; | |
2692 | netdev->mem_end = mmio_start + mmio_len; | |
2693 | ||
2694 | adapter->bd_number = cards_found; | |
2695 | ||
2696 | /* PCI config space info */ | |
2697 | hw->vendor_id = pdev->vendor; | |
2698 | hw->device_id = pdev->device; | |
2699 | hw->revision_id = pdev->revision; | |
2700 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2701 | hw->subsystem_device_id = pdev->subsystem_device; | |
2702 | ||
2703 | /* Setup hw api */ | |
2704 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
9a799d71 AK |
2705 | |
2706 | err = ii->get_invariants(hw); | |
2707 | if (err) | |
2708 | goto err_hw_init; | |
2709 | ||
2710 | /* setup the private structure */ | |
2711 | err = ixgbe_sw_init(adapter); | |
2712 | if (err) | |
2713 | goto err_sw_init; | |
2714 | ||
2715 | netdev->features = NETIF_F_SG | | |
2716 | NETIF_F_HW_CSUM | | |
2717 | NETIF_F_HW_VLAN_TX | | |
2718 | NETIF_F_HW_VLAN_RX | | |
2719 | NETIF_F_HW_VLAN_FILTER; | |
2720 | ||
2721 | netdev->features |= NETIF_F_TSO; | |
2722 | ||
2723 | netdev->features |= NETIF_F_TSO6; | |
2724 | if (pci_using_dac) | |
2725 | netdev->features |= NETIF_F_HIGHDMA; | |
2726 | ||
2727 | ||
2728 | /* make sure the EEPROM is good */ | |
2729 | if (ixgbe_validate_eeprom_checksum(hw, NULL) < 0) { | |
2730 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); | |
2731 | err = -EIO; | |
2732 | goto err_eeprom; | |
2733 | } | |
2734 | ||
2735 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
2736 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
2737 | ||
2738 | if (ixgbe_validate_mac_addr(netdev->dev_addr)) { | |
2739 | err = -EIO; | |
2740 | goto err_eeprom; | |
2741 | } | |
2742 | ||
2743 | init_timer(&adapter->watchdog_timer); | |
2744 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
2745 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2746 | ||
2747 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
2748 | ||
2749 | /* initialize default flow control settings */ | |
2750 | hw->fc.original_type = ixgbe_fc_full; | |
2751 | hw->fc.type = ixgbe_fc_full; | |
2752 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; | |
2753 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
2754 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
2755 | ||
2756 | /* Interrupt Throttle Rate */ | |
2757 | adapter->rx_eitr = (1000000 / IXGBE_DEFAULT_ITR_RX_USECS); | |
2758 | adapter->tx_eitr = (1000000 / IXGBE_DEFAULT_ITR_TX_USECS); | |
2759 | ||
2760 | /* print bus type/speed/width info */ | |
2761 | pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status); | |
2762 | link_speed = link_status & IXGBE_PCI_LINK_SPEED; | |
2763 | link_width = link_status & IXGBE_PCI_LINK_WIDTH; | |
2764 | dev_info(&pdev->dev, "(PCI Express:%s:%s) " | |
2765 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
2766 | ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" : | |
2767 | (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" : | |
2768 | "Unknown"), | |
2769 | ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" : | |
2770 | (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" : | |
2771 | (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" : | |
2772 | (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" : | |
2773 | "Unknown"), | |
2774 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
2775 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
2776 | ixgbe_read_part_num(hw, &part_num); | |
2777 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", | |
2778 | hw->mac.type, hw->phy.type, | |
2779 | (part_num >> 8), (part_num & 0xff)); | |
2780 | ||
2781 | /* reset the hardware with the new settings */ | |
2782 | ixgbe_start_hw(hw); | |
2783 | ||
2784 | netif_carrier_off(netdev); | |
2785 | netif_stop_queue(netdev); | |
2786 | ||
2787 | strcpy(netdev->name, "eth%d"); | |
2788 | err = register_netdev(netdev); | |
2789 | if (err) | |
2790 | goto err_register; | |
2791 | ||
2792 | ||
2793 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
2794 | cards_found++; | |
2795 | return 0; | |
2796 | ||
2797 | err_register: | |
5eba3699 | 2798 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2799 | err_hw_init: |
2800 | err_sw_init: | |
2801 | err_eeprom: | |
2802 | iounmap(hw->hw_addr); | |
2803 | err_ioremap: | |
2804 | free_netdev(netdev); | |
2805 | err_alloc_etherdev: | |
2806 | pci_release_regions(pdev); | |
2807 | err_pci_reg: | |
2808 | err_dma: | |
2809 | pci_disable_device(pdev); | |
2810 | return err; | |
2811 | } | |
2812 | ||
2813 | /** | |
2814 | * ixgbe_remove - Device Removal Routine | |
2815 | * @pdev: PCI device information struct | |
2816 | * | |
2817 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
2818 | * that it should release a PCI device. The could be caused by a | |
2819 | * Hot-Plug event, or because the driver is going to be removed from | |
2820 | * memory. | |
2821 | **/ | |
2822 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
2823 | { | |
2824 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2825 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2826 | ||
2827 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2828 | del_timer_sync(&adapter->watchdog_timer); | |
2829 | ||
2830 | flush_scheduled_work(); | |
2831 | ||
2832 | unregister_netdev(netdev); | |
2833 | ||
5eba3699 AV |
2834 | ixgbe_release_hw_control(adapter); |
2835 | ||
9a799d71 AK |
2836 | kfree(adapter->tx_ring); |
2837 | kfree(adapter->rx_ring); | |
2838 | ||
2839 | iounmap(adapter->hw.hw_addr); | |
2840 | pci_release_regions(pdev); | |
2841 | ||
2842 | free_netdev(netdev); | |
2843 | ||
2844 | pci_disable_device(pdev); | |
2845 | } | |
2846 | ||
2847 | /** | |
2848 | * ixgbe_io_error_detected - called when PCI error is detected | |
2849 | * @pdev: Pointer to PCI device | |
2850 | * @state: The current pci connection state | |
2851 | * | |
2852 | * This function is called after a PCI bus error affecting | |
2853 | * this device has been detected. | |
2854 | */ | |
2855 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
2856 | pci_channel_state_t state) | |
2857 | { | |
2858 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2859 | struct ixgbe_adapter *adapter = netdev->priv; | |
2860 | ||
2861 | netif_device_detach(netdev); | |
2862 | ||
2863 | if (netif_running(netdev)) | |
2864 | ixgbe_down(adapter); | |
2865 | pci_disable_device(pdev); | |
2866 | ||
2867 | /* Request a slot slot reset. */ | |
2868 | return PCI_ERS_RESULT_NEED_RESET; | |
2869 | } | |
2870 | ||
2871 | /** | |
2872 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
2873 | * @pdev: Pointer to PCI device | |
2874 | * | |
2875 | * Restart the card from scratch, as if from a cold-boot. | |
2876 | */ | |
2877 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
2878 | { | |
2879 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2880 | struct ixgbe_adapter *adapter = netdev->priv; | |
2881 | ||
2882 | if (pci_enable_device(pdev)) { | |
2883 | DPRINTK(PROBE, ERR, | |
2884 | "Cannot re-enable PCI device after reset.\n"); | |
2885 | return PCI_ERS_RESULT_DISCONNECT; | |
2886 | } | |
2887 | pci_set_master(pdev); | |
2888 | ||
2889 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2890 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2891 | ||
2892 | ixgbe_reset(adapter); | |
2893 | ||
2894 | return PCI_ERS_RESULT_RECOVERED; | |
2895 | } | |
2896 | ||
2897 | /** | |
2898 | * ixgbe_io_resume - called when traffic can start flowing again. | |
2899 | * @pdev: Pointer to PCI device | |
2900 | * | |
2901 | * This callback is called when the error recovery driver tells us that | |
2902 | * its OK to resume normal operation. | |
2903 | */ | |
2904 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
2905 | { | |
2906 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2907 | struct ixgbe_adapter *adapter = netdev->priv; | |
2908 | ||
2909 | if (netif_running(netdev)) { | |
2910 | if (ixgbe_up(adapter)) { | |
2911 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
2912 | return; | |
2913 | } | |
2914 | } | |
2915 | ||
2916 | netif_device_attach(netdev); | |
2917 | ||
2918 | } | |
2919 | ||
2920 | static struct pci_error_handlers ixgbe_err_handler = { | |
2921 | .error_detected = ixgbe_io_error_detected, | |
2922 | .slot_reset = ixgbe_io_slot_reset, | |
2923 | .resume = ixgbe_io_resume, | |
2924 | }; | |
2925 | ||
2926 | static struct pci_driver ixgbe_driver = { | |
2927 | .name = ixgbe_driver_name, | |
2928 | .id_table = ixgbe_pci_tbl, | |
2929 | .probe = ixgbe_probe, | |
2930 | .remove = __devexit_p(ixgbe_remove), | |
2931 | #ifdef CONFIG_PM | |
2932 | .suspend = ixgbe_suspend, | |
2933 | .resume = ixgbe_resume, | |
2934 | #endif | |
2935 | .shutdown = ixgbe_shutdown, | |
2936 | .err_handler = &ixgbe_err_handler | |
2937 | }; | |
2938 | ||
2939 | /** | |
2940 | * ixgbe_init_module - Driver Registration Routine | |
2941 | * | |
2942 | * ixgbe_init_module is the first routine called when the driver is | |
2943 | * loaded. All it does is register with the PCI subsystem. | |
2944 | **/ | |
2945 | static int __init ixgbe_init_module(void) | |
2946 | { | |
2947 | int ret; | |
2948 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
2949 | ixgbe_driver_string, ixgbe_driver_version); | |
2950 | ||
2951 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
2952 | ||
2953 | ret = pci_register_driver(&ixgbe_driver); | |
2954 | return ret; | |
2955 | } | |
2956 | module_init(ixgbe_init_module); | |
2957 | ||
2958 | /** | |
2959 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
2960 | * | |
2961 | * ixgbe_exit_module is called just before the driver is removed | |
2962 | * from memory. | |
2963 | **/ | |
2964 | static void __exit ixgbe_exit_module(void) | |
2965 | { | |
2966 | pci_unregister_driver(&ixgbe_driver); | |
2967 | } | |
2968 | module_exit(ixgbe_exit_module); | |
2969 | ||
2970 | /* ixgbe_main.c */ |