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1 | /******************************************************************************* |
2 | ||
3 | Intel 82599 Virtual Function driver | |
4 | Copyright(c) 1999 - 2009 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 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | ||
29 | /****************************************************************************** | |
30 | Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code | |
31 | ******************************************************************************/ | |
32 | #include <linux/types.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/vmalloc.h> | |
37 | #include <linux/string.h> | |
38 | #include <linux/in.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | #include <linux/ipv6.h> | |
42 | #include <net/checksum.h> | |
43 | #include <net/ip6_checksum.h> | |
44 | #include <linux/ethtool.h> | |
45 | #include <linux/if_vlan.h> | |
46 | ||
47 | #include "ixgbevf.h" | |
48 | ||
49 | char ixgbevf_driver_name[] = "ixgbevf"; | |
50 | static const char ixgbevf_driver_string[] = | |
51 | "Intel(R) 82599 Virtual Function"; | |
52 | ||
53 | #define DRV_VERSION "1.0.0-k0" | |
54 | const char ixgbevf_driver_version[] = DRV_VERSION; | |
55 | static char ixgbevf_copyright[] = "Copyright (c) 2009 Intel Corporation."; | |
56 | ||
57 | static const struct ixgbevf_info *ixgbevf_info_tbl[] = { | |
58 | [board_82599_vf] = &ixgbevf_vf_info, | |
59 | }; | |
60 | ||
61 | /* ixgbevf_pci_tbl - PCI Device ID Table | |
62 | * | |
63 | * Wildcard entries (PCI_ANY_ID) should come last | |
64 | * Last entry must be all 0s | |
65 | * | |
66 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
67 | * Class, Class Mask, private data (not used) } | |
68 | */ | |
69 | static struct pci_device_id ixgbevf_pci_tbl[] = { | |
70 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), | |
71 | board_82599_vf}, | |
72 | ||
73 | /* required last entry */ | |
74 | {0, } | |
75 | }; | |
76 | MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl); | |
77 | ||
78 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
79 | MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver"); | |
80 | MODULE_LICENSE("GPL"); | |
81 | MODULE_VERSION(DRV_VERSION); | |
82 | ||
83 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
84 | ||
85 | /* forward decls */ | |
86 | static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector); | |
87 | static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx, | |
88 | u32 itr_reg); | |
89 | ||
90 | static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw, | |
91 | struct ixgbevf_ring *rx_ring, | |
92 | u32 val) | |
93 | { | |
94 | /* | |
95 | * Force memory writes to complete before letting h/w | |
96 | * know there are new descriptors to fetch. (Only | |
97 | * applicable for weak-ordered memory model archs, | |
98 | * such as IA-64). | |
99 | */ | |
100 | wmb(); | |
101 | IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val); | |
102 | } | |
103 | ||
104 | /* | |
105 | * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors | |
106 | * @adapter: pointer to adapter struct | |
107 | * @direction: 0 for Rx, 1 for Tx, -1 for other causes | |
108 | * @queue: queue to map the corresponding interrupt to | |
109 | * @msix_vector: the vector to map to the corresponding queue | |
110 | * | |
111 | */ | |
112 | static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction, | |
113 | u8 queue, u8 msix_vector) | |
114 | { | |
115 | u32 ivar, index; | |
116 | struct ixgbe_hw *hw = &adapter->hw; | |
117 | if (direction == -1) { | |
118 | /* other causes */ | |
119 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
120 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC); | |
121 | ivar &= ~0xFF; | |
122 | ivar |= msix_vector; | |
123 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar); | |
124 | } else { | |
125 | /* tx or rx causes */ | |
126 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
127 | index = ((16 * (queue & 1)) + (8 * direction)); | |
128 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1)); | |
129 | ivar &= ~(0xFF << index); | |
130 | ivar |= (msix_vector << index); | |
131 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar); | |
132 | } | |
133 | } | |
134 | ||
135 | static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter, | |
136 | struct ixgbevf_tx_buffer | |
137 | *tx_buffer_info) | |
138 | { | |
139 | if (tx_buffer_info->dma) { | |
140 | if (tx_buffer_info->mapped_as_page) | |
141 | pci_unmap_page(adapter->pdev, | |
142 | tx_buffer_info->dma, | |
143 | tx_buffer_info->length, | |
144 | PCI_DMA_TODEVICE); | |
145 | else | |
146 | pci_unmap_single(adapter->pdev, | |
147 | tx_buffer_info->dma, | |
148 | tx_buffer_info->length, | |
149 | PCI_DMA_TODEVICE); | |
150 | tx_buffer_info->dma = 0; | |
151 | } | |
152 | if (tx_buffer_info->skb) { | |
153 | dev_kfree_skb_any(tx_buffer_info->skb); | |
154 | tx_buffer_info->skb = NULL; | |
155 | } | |
156 | tx_buffer_info->time_stamp = 0; | |
157 | /* tx_buffer_info must be completely set up in the transmit path */ | |
158 | } | |
159 | ||
160 | static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter, | |
161 | struct ixgbevf_ring *tx_ring, | |
162 | unsigned int eop) | |
163 | { | |
164 | struct ixgbe_hw *hw = &adapter->hw; | |
165 | u32 head, tail; | |
166 | ||
167 | /* Detect a transmit hang in hardware, this serializes the | |
168 | * check with the clearing of time_stamp and movement of eop */ | |
169 | head = readl(hw->hw_addr + tx_ring->head); | |
170 | tail = readl(hw->hw_addr + tx_ring->tail); | |
171 | adapter->detect_tx_hung = false; | |
172 | if ((head != tail) && | |
173 | tx_ring->tx_buffer_info[eop].time_stamp && | |
174 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) { | |
175 | /* detected Tx unit hang */ | |
176 | union ixgbe_adv_tx_desc *tx_desc; | |
177 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
178 | printk(KERN_ERR "Detected Tx Unit Hang\n" | |
179 | " Tx Queue <%d>\n" | |
180 | " TDH, TDT <%x>, <%x>\n" | |
181 | " next_to_use <%x>\n" | |
182 | " next_to_clean <%x>\n" | |
183 | "tx_buffer_info[next_to_clean]\n" | |
184 | " time_stamp <%lx>\n" | |
185 | " jiffies <%lx>\n", | |
186 | tx_ring->queue_index, | |
187 | head, tail, | |
188 | tx_ring->next_to_use, eop, | |
189 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); | |
190 | return true; | |
191 | } | |
192 | ||
193 | return false; | |
194 | } | |
195 | ||
196 | #define IXGBE_MAX_TXD_PWR 14 | |
197 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
198 | ||
199 | /* Tx Descriptors needed, worst case */ | |
200 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
201 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
202 | #ifdef MAX_SKB_FRAGS | |
203 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
204 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
205 | #else | |
206 | #define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) | |
207 | #endif | |
208 | ||
209 | static void ixgbevf_tx_timeout(struct net_device *netdev); | |
210 | ||
211 | /** | |
212 | * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes | |
213 | * @adapter: board private structure | |
214 | * @tx_ring: tx ring to clean | |
215 | **/ | |
216 | static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter, | |
217 | struct ixgbevf_ring *tx_ring) | |
218 | { | |
219 | struct net_device *netdev = adapter->netdev; | |
220 | struct ixgbe_hw *hw = &adapter->hw; | |
221 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; | |
222 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
223 | unsigned int i, eop, count = 0; | |
224 | unsigned int total_bytes = 0, total_packets = 0; | |
225 | ||
226 | i = tx_ring->next_to_clean; | |
227 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
228 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
229 | ||
230 | while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) && | |
231 | (count < tx_ring->work_limit)) { | |
232 | bool cleaned = false; | |
233 | for ( ; !cleaned; count++) { | |
234 | struct sk_buff *skb; | |
235 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
236 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
237 | cleaned = (i == eop); | |
238 | skb = tx_buffer_info->skb; | |
239 | ||
240 | if (cleaned && skb) { | |
241 | unsigned int segs, bytecount; | |
242 | ||
243 | /* gso_segs is currently only valid for tcp */ | |
244 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
245 | /* multiply data chunks by size of headers */ | |
246 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
247 | skb->len; | |
248 | total_packets += segs; | |
249 | total_bytes += bytecount; | |
250 | } | |
251 | ||
252 | ixgbevf_unmap_and_free_tx_resource(adapter, | |
253 | tx_buffer_info); | |
254 | ||
255 | tx_desc->wb.status = 0; | |
256 | ||
257 | i++; | |
258 | if (i == tx_ring->count) | |
259 | i = 0; | |
260 | } | |
261 | ||
262 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
263 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
264 | } | |
265 | ||
266 | tx_ring->next_to_clean = i; | |
267 | ||
268 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) | |
269 | if (unlikely(count && netif_carrier_ok(netdev) && | |
270 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { | |
271 | /* Make sure that anybody stopping the queue after this | |
272 | * sees the new next_to_clean. | |
273 | */ | |
274 | smp_mb(); | |
275 | #ifdef HAVE_TX_MQ | |
276 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && | |
277 | !test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
278 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
279 | ++adapter->restart_queue; | |
280 | } | |
281 | #else | |
282 | if (netif_queue_stopped(netdev) && | |
283 | !test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
284 | netif_wake_queue(netdev); | |
285 | ++adapter->restart_queue; | |
286 | } | |
287 | #endif | |
288 | } | |
289 | ||
290 | if (adapter->detect_tx_hung) { | |
291 | if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) { | |
292 | /* schedule immediate reset if we believe we hung */ | |
293 | printk(KERN_INFO | |
294 | "tx hang %d detected, resetting adapter\n", | |
295 | adapter->tx_timeout_count + 1); | |
296 | ixgbevf_tx_timeout(adapter->netdev); | |
297 | } | |
298 | } | |
299 | ||
300 | /* re-arm the interrupt */ | |
301 | if ((count >= tx_ring->work_limit) && | |
302 | (!test_bit(__IXGBEVF_DOWN, &adapter->state))) { | |
303 | IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx); | |
304 | } | |
305 | ||
306 | tx_ring->total_bytes += total_bytes; | |
307 | tx_ring->total_packets += total_packets; | |
308 | ||
309 | adapter->net_stats.tx_bytes += total_bytes; | |
310 | adapter->net_stats.tx_packets += total_packets; | |
311 | ||
312 | return (count < tx_ring->work_limit); | |
313 | } | |
314 | ||
315 | /** | |
316 | * ixgbevf_receive_skb - Send a completed packet up the stack | |
317 | * @q_vector: structure containing interrupt and ring information | |
318 | * @skb: packet to send up | |
319 | * @status: hardware indication of status of receive | |
320 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
321 | * @rx_desc: rx descriptor | |
322 | **/ | |
323 | static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector, | |
324 | struct sk_buff *skb, u8 status, | |
325 | struct ixgbevf_ring *ring, | |
326 | union ixgbe_adv_rx_desc *rx_desc) | |
327 | { | |
328 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
329 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); | |
330 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
331 | int ret; | |
332 | ||
333 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
334 | if (adapter->vlgrp && is_vlan) | |
335 | vlan_gro_receive(&q_vector->napi, | |
336 | adapter->vlgrp, | |
337 | tag, skb); | |
338 | else | |
339 | napi_gro_receive(&q_vector->napi, skb); | |
340 | } else { | |
341 | if (adapter->vlgrp && is_vlan) | |
342 | ret = vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
343 | else | |
344 | ret = netif_rx(skb); | |
345 | } | |
346 | } | |
347 | ||
348 | /** | |
349 | * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum | |
350 | * @adapter: address of board private structure | |
351 | * @status_err: hardware indication of status of receive | |
352 | * @skb: skb currently being received and modified | |
353 | **/ | |
354 | static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter, | |
355 | u32 status_err, struct sk_buff *skb) | |
356 | { | |
357 | skb->ip_summed = CHECKSUM_NONE; | |
358 | ||
359 | /* Rx csum disabled */ | |
360 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
361 | return; | |
362 | ||
363 | /* if IP and error */ | |
364 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
365 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
366 | adapter->hw_csum_rx_error++; | |
367 | return; | |
368 | } | |
369 | ||
370 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
371 | return; | |
372 | ||
373 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
374 | adapter->hw_csum_rx_error++; | |
375 | return; | |
376 | } | |
377 | ||
378 | /* It must be a TCP or UDP packet with a valid checksum */ | |
379 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
380 | adapter->hw_csum_rx_good++; | |
381 | } | |
382 | ||
383 | /** | |
384 | * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split | |
385 | * @adapter: address of board private structure | |
386 | **/ | |
387 | static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter, | |
388 | struct ixgbevf_ring *rx_ring, | |
389 | int cleaned_count) | |
390 | { | |
391 | struct pci_dev *pdev = adapter->pdev; | |
392 | union ixgbe_adv_rx_desc *rx_desc; | |
393 | struct ixgbevf_rx_buffer *bi; | |
394 | struct sk_buff *skb; | |
395 | unsigned int i; | |
396 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; | |
397 | ||
398 | i = rx_ring->next_to_use; | |
399 | bi = &rx_ring->rx_buffer_info[i]; | |
400 | ||
401 | while (cleaned_count--) { | |
402 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
403 | ||
404 | if (!bi->page_dma && | |
405 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { | |
406 | if (!bi->page) { | |
407 | bi->page = netdev_alloc_page(adapter->netdev); | |
408 | if (!bi->page) { | |
409 | adapter->alloc_rx_page_failed++; | |
410 | goto no_buffers; | |
411 | } | |
412 | bi->page_offset = 0; | |
413 | } else { | |
414 | /* use a half page if we're re-using */ | |
415 | bi->page_offset ^= (PAGE_SIZE / 2); | |
416 | } | |
417 | ||
418 | bi->page_dma = pci_map_page(pdev, bi->page, | |
419 | bi->page_offset, | |
420 | (PAGE_SIZE / 2), | |
421 | PCI_DMA_FROMDEVICE); | |
422 | } | |
423 | ||
424 | skb = bi->skb; | |
425 | if (!skb) { | |
426 | skb = netdev_alloc_skb(adapter->netdev, | |
427 | bufsz); | |
428 | ||
429 | if (!skb) { | |
430 | adapter->alloc_rx_buff_failed++; | |
431 | goto no_buffers; | |
432 | } | |
433 | ||
434 | /* | |
435 | * Make buffer alignment 2 beyond a 16 byte boundary | |
436 | * this will result in a 16 byte aligned IP header after | |
437 | * the 14 byte MAC header is removed | |
438 | */ | |
439 | skb_reserve(skb, NET_IP_ALIGN); | |
440 | ||
441 | bi->skb = skb; | |
442 | } | |
443 | if (!bi->dma) { | |
444 | bi->dma = pci_map_single(pdev, skb->data, | |
445 | rx_ring->rx_buf_len, | |
446 | PCI_DMA_FROMDEVICE); | |
447 | } | |
448 | /* Refresh the desc even if buffer_addrs didn't change because | |
449 | * each write-back erases this info. */ | |
450 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
451 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); | |
452 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); | |
453 | } else { | |
454 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); | |
455 | } | |
456 | ||
457 | i++; | |
458 | if (i == rx_ring->count) | |
459 | i = 0; | |
460 | bi = &rx_ring->rx_buffer_info[i]; | |
461 | } | |
462 | ||
463 | no_buffers: | |
464 | if (rx_ring->next_to_use != i) { | |
465 | rx_ring->next_to_use = i; | |
466 | if (i-- == 0) | |
467 | i = (rx_ring->count - 1); | |
468 | ||
469 | ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i); | |
470 | } | |
471 | } | |
472 | ||
473 | static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter, | |
474 | u64 qmask) | |
475 | { | |
476 | u32 mask; | |
477 | struct ixgbe_hw *hw = &adapter->hw; | |
478 | ||
479 | mask = (qmask & 0xFFFFFFFF); | |
480 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); | |
481 | } | |
482 | ||
483 | static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc) | |
484 | { | |
485 | return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info; | |
486 | } | |
487 | ||
488 | static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc) | |
489 | { | |
490 | return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; | |
491 | } | |
492 | ||
493 | static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, | |
494 | struct ixgbevf_ring *rx_ring, | |
495 | int *work_done, int work_to_do) | |
496 | { | |
497 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
498 | struct pci_dev *pdev = adapter->pdev; | |
499 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
500 | struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer; | |
501 | struct sk_buff *skb; | |
502 | unsigned int i; | |
503 | u32 len, staterr; | |
504 | u16 hdr_info; | |
505 | bool cleaned = false; | |
506 | int cleaned_count = 0; | |
507 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
508 | ||
509 | i = rx_ring->next_to_clean; | |
510 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
511 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
512 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
513 | ||
514 | while (staterr & IXGBE_RXD_STAT_DD) { | |
515 | u32 upper_len = 0; | |
516 | if (*work_done >= work_to_do) | |
517 | break; | |
518 | (*work_done)++; | |
519 | ||
520 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
521 | hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc)); | |
522 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
523 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; | |
524 | if (hdr_info & IXGBE_RXDADV_SPH) | |
525 | adapter->rx_hdr_split++; | |
526 | if (len > IXGBEVF_RX_HDR_SIZE) | |
527 | len = IXGBEVF_RX_HDR_SIZE; | |
528 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
529 | } else { | |
530 | len = le16_to_cpu(rx_desc->wb.upper.length); | |
531 | } | |
532 | cleaned = true; | |
533 | skb = rx_buffer_info->skb; | |
534 | prefetch(skb->data - NET_IP_ALIGN); | |
535 | rx_buffer_info->skb = NULL; | |
536 | ||
537 | if (rx_buffer_info->dma) { | |
538 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
539 | rx_ring->rx_buf_len, | |
540 | PCI_DMA_FROMDEVICE); | |
541 | rx_buffer_info->dma = 0; | |
542 | skb_put(skb, len); | |
543 | } | |
544 | ||
545 | if (upper_len) { | |
546 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
547 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); | |
548 | rx_buffer_info->page_dma = 0; | |
549 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
550 | rx_buffer_info->page, | |
551 | rx_buffer_info->page_offset, | |
552 | upper_len); | |
553 | ||
554 | if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) || | |
555 | (page_count(rx_buffer_info->page) != 1)) | |
556 | rx_buffer_info->page = NULL; | |
557 | else | |
558 | get_page(rx_buffer_info->page); | |
559 | ||
560 | skb->len += upper_len; | |
561 | skb->data_len += upper_len; | |
562 | skb->truesize += upper_len; | |
563 | } | |
564 | ||
565 | i++; | |
566 | if (i == rx_ring->count) | |
567 | i = 0; | |
568 | ||
569 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
570 | prefetch(next_rxd); | |
571 | cleaned_count++; | |
572 | ||
573 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
574 | ||
575 | if (!(staterr & IXGBE_RXD_STAT_EOP)) { | |
576 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
577 | rx_buffer_info->skb = next_buffer->skb; | |
578 | rx_buffer_info->dma = next_buffer->dma; | |
579 | next_buffer->skb = skb; | |
580 | next_buffer->dma = 0; | |
581 | } else { | |
582 | skb->next = next_buffer->skb; | |
583 | skb->next->prev = skb; | |
584 | } | |
585 | adapter->non_eop_descs++; | |
586 | goto next_desc; | |
587 | } | |
588 | ||
589 | /* ERR_MASK will only have valid bits if EOP set */ | |
590 | if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) { | |
591 | dev_kfree_skb_irq(skb); | |
592 | goto next_desc; | |
593 | } | |
594 | ||
595 | ixgbevf_rx_checksum(adapter, staterr, skb); | |
596 | ||
597 | /* probably a little skewed due to removing CRC */ | |
598 | total_rx_bytes += skb->len; | |
599 | total_rx_packets++; | |
600 | ||
601 | /* | |
602 | * Work around issue of some types of VM to VM loop back | |
603 | * packets not getting split correctly | |
604 | */ | |
605 | if (staterr & IXGBE_RXD_STAT_LB) { | |
606 | u32 header_fixup_len = skb->len - skb->data_len; | |
607 | if (header_fixup_len < 14) | |
608 | skb_push(skb, header_fixup_len); | |
609 | } | |
610 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
611 | ||
612 | ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc); | |
613 | adapter->netdev->last_rx = jiffies; | |
614 | ||
615 | next_desc: | |
616 | rx_desc->wb.upper.status_error = 0; | |
617 | ||
618 | /* return some buffers to hardware, one at a time is too slow */ | |
619 | if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) { | |
620 | ixgbevf_alloc_rx_buffers(adapter, rx_ring, | |
621 | cleaned_count); | |
622 | cleaned_count = 0; | |
623 | } | |
624 | ||
625 | /* use prefetched values */ | |
626 | rx_desc = next_rxd; | |
627 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
628 | ||
629 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
630 | } | |
631 | ||
632 | rx_ring->next_to_clean = i; | |
633 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
634 | ||
635 | if (cleaned_count) | |
636 | ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
637 | ||
638 | rx_ring->total_packets += total_rx_packets; | |
639 | rx_ring->total_bytes += total_rx_bytes; | |
640 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
641 | adapter->net_stats.rx_packets += total_rx_packets; | |
642 | ||
643 | return cleaned; | |
644 | } | |
645 | ||
646 | /** | |
647 | * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine | |
648 | * @napi: napi struct with our devices info in it | |
649 | * @budget: amount of work driver is allowed to do this pass, in packets | |
650 | * | |
651 | * This function is optimized for cleaning one queue only on a single | |
652 | * q_vector!!! | |
653 | **/ | |
654 | static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget) | |
655 | { | |
656 | struct ixgbevf_q_vector *q_vector = | |
657 | container_of(napi, struct ixgbevf_q_vector, napi); | |
658 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
659 | struct ixgbevf_ring *rx_ring = NULL; | |
660 | int work_done = 0; | |
661 | long r_idx; | |
662 | ||
663 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
664 | rx_ring = &(adapter->rx_ring[r_idx]); | |
665 | ||
666 | ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget); | |
667 | ||
668 | /* If all Rx work done, exit the polling mode */ | |
669 | if (work_done < budget) { | |
670 | napi_complete(napi); | |
671 | if (adapter->itr_setting & 1) | |
672 | ixgbevf_set_itr_msix(q_vector); | |
673 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
674 | ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx); | |
675 | } | |
676 | ||
677 | return work_done; | |
678 | } | |
679 | ||
680 | /** | |
681 | * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine | |
682 | * @napi: napi struct with our devices info in it | |
683 | * @budget: amount of work driver is allowed to do this pass, in packets | |
684 | * | |
685 | * This function will clean more than one rx queue associated with a | |
686 | * q_vector. | |
687 | **/ | |
688 | static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget) | |
689 | { | |
690 | struct ixgbevf_q_vector *q_vector = | |
691 | container_of(napi, struct ixgbevf_q_vector, napi); | |
692 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
693 | struct ixgbevf_ring *rx_ring = NULL; | |
694 | int work_done = 0, i; | |
695 | long r_idx; | |
696 | u64 enable_mask = 0; | |
697 | ||
698 | /* attempt to distribute budget to each queue fairly, but don't allow | |
699 | * the budget to go below 1 because we'll exit polling */ | |
700 | budget /= (q_vector->rxr_count ?: 1); | |
701 | budget = max(budget, 1); | |
702 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
703 | for (i = 0; i < q_vector->rxr_count; i++) { | |
704 | rx_ring = &(adapter->rx_ring[r_idx]); | |
705 | ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget); | |
706 | enable_mask |= rx_ring->v_idx; | |
707 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
708 | r_idx + 1); | |
709 | } | |
710 | ||
711 | #ifndef HAVE_NETDEV_NAPI_LIST | |
712 | if (!netif_running(adapter->netdev)) | |
713 | work_done = 0; | |
714 | ||
715 | #endif | |
716 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
717 | rx_ring = &(adapter->rx_ring[r_idx]); | |
718 | ||
719 | /* If all Rx work done, exit the polling mode */ | |
720 | if (work_done < budget) { | |
721 | napi_complete(napi); | |
722 | if (adapter->itr_setting & 1) | |
723 | ixgbevf_set_itr_msix(q_vector); | |
724 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
725 | ixgbevf_irq_enable_queues(adapter, enable_mask); | |
726 | } | |
727 | ||
728 | return work_done; | |
729 | } | |
730 | ||
731 | ||
732 | /** | |
733 | * ixgbevf_configure_msix - Configure MSI-X hardware | |
734 | * @adapter: board private structure | |
735 | * | |
736 | * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X | |
737 | * interrupts. | |
738 | **/ | |
739 | static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter) | |
740 | { | |
741 | struct ixgbevf_q_vector *q_vector; | |
742 | struct ixgbe_hw *hw = &adapter->hw; | |
743 | int i, j, q_vectors, v_idx, r_idx; | |
744 | u32 mask; | |
745 | ||
746 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
747 | ||
748 | /* | |
749 | * Populate the IVAR table and set the ITR values to the | |
750 | * corresponding register. | |
751 | */ | |
752 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
753 | q_vector = adapter->q_vector[v_idx]; | |
984b3f57 | 754 | /* XXX for_each_set_bit(...) */ |
92915f71 GR |
755 | r_idx = find_first_bit(q_vector->rxr_idx, |
756 | adapter->num_rx_queues); | |
757 | ||
758 | for (i = 0; i < q_vector->rxr_count; i++) { | |
759 | j = adapter->rx_ring[r_idx].reg_idx; | |
760 | ixgbevf_set_ivar(adapter, 0, j, v_idx); | |
761 | r_idx = find_next_bit(q_vector->rxr_idx, | |
762 | adapter->num_rx_queues, | |
763 | r_idx + 1); | |
764 | } | |
765 | r_idx = find_first_bit(q_vector->txr_idx, | |
766 | adapter->num_tx_queues); | |
767 | ||
768 | for (i = 0; i < q_vector->txr_count; i++) { | |
769 | j = adapter->tx_ring[r_idx].reg_idx; | |
770 | ixgbevf_set_ivar(adapter, 1, j, v_idx); | |
771 | r_idx = find_next_bit(q_vector->txr_idx, | |
772 | adapter->num_tx_queues, | |
773 | r_idx + 1); | |
774 | } | |
775 | ||
776 | /* if this is a tx only vector halve the interrupt rate */ | |
777 | if (q_vector->txr_count && !q_vector->rxr_count) | |
778 | q_vector->eitr = (adapter->eitr_param >> 1); | |
779 | else if (q_vector->rxr_count) | |
780 | /* rx only */ | |
781 | q_vector->eitr = adapter->eitr_param; | |
782 | ||
783 | ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr); | |
784 | } | |
785 | ||
786 | ixgbevf_set_ivar(adapter, -1, 1, v_idx); | |
787 | ||
788 | /* set up to autoclear timer, and the vectors */ | |
789 | mask = IXGBE_EIMS_ENABLE_MASK; | |
790 | mask &= ~IXGBE_EIMS_OTHER; | |
791 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask); | |
792 | } | |
793 | ||
794 | enum latency_range { | |
795 | lowest_latency = 0, | |
796 | low_latency = 1, | |
797 | bulk_latency = 2, | |
798 | latency_invalid = 255 | |
799 | }; | |
800 | ||
801 | /** | |
802 | * ixgbevf_update_itr - update the dynamic ITR value based on statistics | |
803 | * @adapter: pointer to adapter | |
804 | * @eitr: eitr setting (ints per sec) to give last timeslice | |
805 | * @itr_setting: current throttle rate in ints/second | |
806 | * @packets: the number of packets during this measurement interval | |
807 | * @bytes: the number of bytes during this measurement interval | |
808 | * | |
809 | * Stores a new ITR value based on packets and byte | |
810 | * counts during the last interrupt. The advantage of per interrupt | |
811 | * computation is faster updates and more accurate ITR for the current | |
812 | * traffic pattern. Constants in this function were computed | |
813 | * based on theoretical maximum wire speed and thresholds were set based | |
814 | * on testing data as well as attempting to minimize response time | |
815 | * while increasing bulk throughput. | |
816 | **/ | |
817 | static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter, | |
818 | u32 eitr, u8 itr_setting, | |
819 | int packets, int bytes) | |
820 | { | |
821 | unsigned int retval = itr_setting; | |
822 | u32 timepassed_us; | |
823 | u64 bytes_perint; | |
824 | ||
825 | if (packets == 0) | |
826 | goto update_itr_done; | |
827 | ||
828 | ||
829 | /* simple throttlerate management | |
830 | * 0-20MB/s lowest (100000 ints/s) | |
831 | * 20-100MB/s low (20000 ints/s) | |
832 | * 100-1249MB/s bulk (8000 ints/s) | |
833 | */ | |
834 | /* what was last interrupt timeslice? */ | |
835 | timepassed_us = 1000000/eitr; | |
836 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ | |
837 | ||
838 | switch (itr_setting) { | |
839 | case lowest_latency: | |
840 | if (bytes_perint > adapter->eitr_low) | |
841 | retval = low_latency; | |
842 | break; | |
843 | case low_latency: | |
844 | if (bytes_perint > adapter->eitr_high) | |
845 | retval = bulk_latency; | |
846 | else if (bytes_perint <= adapter->eitr_low) | |
847 | retval = lowest_latency; | |
848 | break; | |
849 | case bulk_latency: | |
850 | if (bytes_perint <= adapter->eitr_high) | |
851 | retval = low_latency; | |
852 | break; | |
853 | } | |
854 | ||
855 | update_itr_done: | |
856 | return retval; | |
857 | } | |
858 | ||
859 | /** | |
860 | * ixgbevf_write_eitr - write VTEITR register in hardware specific way | |
861 | * @adapter: pointer to adapter struct | |
862 | * @v_idx: vector index into q_vector array | |
863 | * @itr_reg: new value to be written in *register* format, not ints/s | |
864 | * | |
865 | * This function is made to be called by ethtool and by the driver | |
866 | * when it needs to update VTEITR registers at runtime. Hardware | |
867 | * specific quirks/differences are taken care of here. | |
868 | */ | |
869 | static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx, | |
870 | u32 itr_reg) | |
871 | { | |
872 | struct ixgbe_hw *hw = &adapter->hw; | |
873 | ||
874 | itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg); | |
875 | ||
876 | /* | |
877 | * set the WDIS bit to not clear the timer bits and cause an | |
878 | * immediate assertion of the interrupt | |
879 | */ | |
880 | itr_reg |= IXGBE_EITR_CNT_WDIS; | |
881 | ||
882 | IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg); | |
883 | } | |
884 | ||
885 | static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector) | |
886 | { | |
887 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
888 | u32 new_itr; | |
889 | u8 current_itr, ret_itr; | |
890 | int i, r_idx, v_idx = q_vector->v_idx; | |
891 | struct ixgbevf_ring *rx_ring, *tx_ring; | |
892 | ||
893 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
894 | for (i = 0; i < q_vector->txr_count; i++) { | |
895 | tx_ring = &(adapter->tx_ring[r_idx]); | |
896 | ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr, | |
897 | q_vector->tx_itr, | |
898 | tx_ring->total_packets, | |
899 | tx_ring->total_bytes); | |
900 | /* if the result for this queue would decrease interrupt | |
901 | * rate for this vector then use that result */ | |
902 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? | |
903 | q_vector->tx_itr - 1 : ret_itr); | |
904 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, | |
905 | r_idx + 1); | |
906 | } | |
907 | ||
908 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
909 | for (i = 0; i < q_vector->rxr_count; i++) { | |
910 | rx_ring = &(adapter->rx_ring[r_idx]); | |
911 | ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr, | |
912 | q_vector->rx_itr, | |
913 | rx_ring->total_packets, | |
914 | rx_ring->total_bytes); | |
915 | /* if the result for this queue would decrease interrupt | |
916 | * rate for this vector then use that result */ | |
917 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? | |
918 | q_vector->rx_itr - 1 : ret_itr); | |
919 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
920 | r_idx + 1); | |
921 | } | |
922 | ||
923 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); | |
924 | ||
925 | switch (current_itr) { | |
926 | /* counts and packets in update_itr are dependent on these numbers */ | |
927 | case lowest_latency: | |
928 | new_itr = 100000; | |
929 | break; | |
930 | case low_latency: | |
931 | new_itr = 20000; /* aka hwitr = ~200 */ | |
932 | break; | |
933 | case bulk_latency: | |
934 | default: | |
935 | new_itr = 8000; | |
936 | break; | |
937 | } | |
938 | ||
939 | if (new_itr != q_vector->eitr) { | |
940 | u32 itr_reg; | |
941 | ||
942 | /* save the algorithm value here, not the smoothed one */ | |
943 | q_vector->eitr = new_itr; | |
944 | /* do an exponential smoothing */ | |
945 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
946 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
947 | ixgbevf_write_eitr(adapter, v_idx, itr_reg); | |
948 | } | |
949 | ||
950 | return; | |
951 | } | |
952 | ||
953 | static irqreturn_t ixgbevf_msix_mbx(int irq, void *data) | |
954 | { | |
955 | struct net_device *netdev = data; | |
956 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
957 | struct ixgbe_hw *hw = &adapter->hw; | |
958 | u32 eicr; | |
a9ee25a2 | 959 | u32 msg; |
92915f71 GR |
960 | |
961 | eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS); | |
962 | IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr); | |
963 | ||
a9ee25a2 GR |
964 | hw->mbx.ops.read(hw, &msg, 1); |
965 | ||
966 | if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG) | |
967 | mod_timer(&adapter->watchdog_timer, | |
4c3a8223 | 968 | round_jiffies(jiffies + 1)); |
a9ee25a2 | 969 | |
92915f71 GR |
970 | return IRQ_HANDLED; |
971 | } | |
972 | ||
973 | static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data) | |
974 | { | |
975 | struct ixgbevf_q_vector *q_vector = data; | |
976 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
977 | struct ixgbevf_ring *tx_ring; | |
978 | int i, r_idx; | |
979 | ||
980 | if (!q_vector->txr_count) | |
981 | return IRQ_HANDLED; | |
982 | ||
983 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
984 | for (i = 0; i < q_vector->txr_count; i++) { | |
985 | tx_ring = &(adapter->tx_ring[r_idx]); | |
986 | tx_ring->total_bytes = 0; | |
987 | tx_ring->total_packets = 0; | |
988 | ixgbevf_clean_tx_irq(adapter, tx_ring); | |
989 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, | |
990 | r_idx + 1); | |
991 | } | |
992 | ||
993 | if (adapter->itr_setting & 1) | |
994 | ixgbevf_set_itr_msix(q_vector); | |
995 | ||
996 | return IRQ_HANDLED; | |
997 | } | |
998 | ||
999 | /** | |
1000 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) | |
1001 | * @irq: unused | |
1002 | * @data: pointer to our q_vector struct for this interrupt vector | |
1003 | **/ | |
1004 | static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data) | |
1005 | { | |
1006 | struct ixgbevf_q_vector *q_vector = data; | |
1007 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
1008 | struct ixgbe_hw *hw = &adapter->hw; | |
1009 | struct ixgbevf_ring *rx_ring; | |
1010 | int r_idx; | |
1011 | int i; | |
1012 | ||
1013 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1014 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1015 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1016 | rx_ring->total_bytes = 0; | |
1017 | rx_ring->total_packets = 0; | |
1018 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1019 | r_idx + 1); | |
1020 | } | |
1021 | ||
1022 | if (!q_vector->rxr_count) | |
1023 | return IRQ_HANDLED; | |
1024 | ||
1025 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1026 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1027 | /* disable interrupts on this vector only */ | |
1028 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx); | |
1029 | napi_schedule(&q_vector->napi); | |
1030 | ||
1031 | ||
1032 | return IRQ_HANDLED; | |
1033 | } | |
1034 | ||
1035 | static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data) | |
1036 | { | |
1037 | ixgbevf_msix_clean_rx(irq, data); | |
1038 | ixgbevf_msix_clean_tx(irq, data); | |
1039 | ||
1040 | return IRQ_HANDLED; | |
1041 | } | |
1042 | ||
1043 | static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx, | |
1044 | int r_idx) | |
1045 | { | |
1046 | struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx]; | |
1047 | ||
1048 | set_bit(r_idx, q_vector->rxr_idx); | |
1049 | q_vector->rxr_count++; | |
1050 | a->rx_ring[r_idx].v_idx = 1 << v_idx; | |
1051 | } | |
1052 | ||
1053 | static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx, | |
1054 | int t_idx) | |
1055 | { | |
1056 | struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx]; | |
1057 | ||
1058 | set_bit(t_idx, q_vector->txr_idx); | |
1059 | q_vector->txr_count++; | |
1060 | a->tx_ring[t_idx].v_idx = 1 << v_idx; | |
1061 | } | |
1062 | ||
1063 | /** | |
1064 | * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors | |
1065 | * @adapter: board private structure to initialize | |
1066 | * | |
1067 | * This function maps descriptor rings to the queue-specific vectors | |
1068 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
1069 | * one vector per ring/queue, but on a constrained vector budget, we | |
1070 | * group the rings as "efficiently" as possible. You would add new | |
1071 | * mapping configurations in here. | |
1072 | **/ | |
1073 | static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter) | |
1074 | { | |
1075 | int q_vectors; | |
1076 | int v_start = 0; | |
1077 | int rxr_idx = 0, txr_idx = 0; | |
1078 | int rxr_remaining = adapter->num_rx_queues; | |
1079 | int txr_remaining = adapter->num_tx_queues; | |
1080 | int i, j; | |
1081 | int rqpv, tqpv; | |
1082 | int err = 0; | |
1083 | ||
1084 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1085 | ||
1086 | /* | |
1087 | * The ideal configuration... | |
1088 | * We have enough vectors to map one per queue. | |
1089 | */ | |
1090 | if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) { | |
1091 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
1092 | map_vector_to_rxq(adapter, v_start, rxr_idx); | |
1093 | ||
1094 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) | |
1095 | map_vector_to_txq(adapter, v_start, txr_idx); | |
1096 | goto out; | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * If we don't have enough vectors for a 1-to-1 | |
1101 | * mapping, we'll have to group them so there are | |
1102 | * multiple queues per vector. | |
1103 | */ | |
1104 | /* Re-adjusting *qpv takes care of the remainder. */ | |
1105 | for (i = v_start; i < q_vectors; i++) { | |
1106 | rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); | |
1107 | for (j = 0; j < rqpv; j++) { | |
1108 | map_vector_to_rxq(adapter, i, rxr_idx); | |
1109 | rxr_idx++; | |
1110 | rxr_remaining--; | |
1111 | } | |
1112 | } | |
1113 | for (i = v_start; i < q_vectors; i++) { | |
1114 | tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); | |
1115 | for (j = 0; j < tqpv; j++) { | |
1116 | map_vector_to_txq(adapter, i, txr_idx); | |
1117 | txr_idx++; | |
1118 | txr_remaining--; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | out: | |
1123 | return err; | |
1124 | } | |
1125 | ||
1126 | /** | |
1127 | * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts | |
1128 | * @adapter: board private structure | |
1129 | * | |
1130 | * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests | |
1131 | * interrupts from the kernel. | |
1132 | **/ | |
1133 | static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter) | |
1134 | { | |
1135 | struct net_device *netdev = adapter->netdev; | |
1136 | irqreturn_t (*handler)(int, void *); | |
1137 | int i, vector, q_vectors, err; | |
1138 | int ri = 0, ti = 0; | |
1139 | ||
1140 | /* Decrement for Other and TCP Timer vectors */ | |
1141 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1142 | ||
1143 | #define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \ | |
1144 | ? &ixgbevf_msix_clean_many : \ | |
1145 | (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \ | |
1146 | (_v)->txr_count ? &ixgbevf_msix_clean_tx : \ | |
1147 | NULL) | |
1148 | for (vector = 0; vector < q_vectors; vector++) { | |
1149 | handler = SET_HANDLER(adapter->q_vector[vector]); | |
1150 | ||
1151 | if (handler == &ixgbevf_msix_clean_rx) { | |
1152 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1153 | netdev->name, "rx", ri++); | |
1154 | } else if (handler == &ixgbevf_msix_clean_tx) { | |
1155 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1156 | netdev->name, "tx", ti++); | |
1157 | } else if (handler == &ixgbevf_msix_clean_many) { | |
1158 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1159 | netdev->name, "TxRx", vector); | |
1160 | } else { | |
1161 | /* skip this unused q_vector */ | |
1162 | continue; | |
1163 | } | |
1164 | err = request_irq(adapter->msix_entries[vector].vector, | |
1165 | handler, 0, adapter->name[vector], | |
1166 | adapter->q_vector[vector]); | |
1167 | if (err) { | |
1168 | hw_dbg(&adapter->hw, | |
1169 | "request_irq failed for MSIX interrupt " | |
1170 | "Error: %d\n", err); | |
1171 | goto free_queue_irqs; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | sprintf(adapter->name[vector], "%s:mbx", netdev->name); | |
1176 | err = request_irq(adapter->msix_entries[vector].vector, | |
1177 | &ixgbevf_msix_mbx, 0, adapter->name[vector], netdev); | |
1178 | if (err) { | |
1179 | hw_dbg(&adapter->hw, | |
1180 | "request_irq for msix_mbx failed: %d\n", err); | |
1181 | goto free_queue_irqs; | |
1182 | } | |
1183 | ||
1184 | return 0; | |
1185 | ||
1186 | free_queue_irqs: | |
1187 | for (i = vector - 1; i >= 0; i--) | |
1188 | free_irq(adapter->msix_entries[--vector].vector, | |
1189 | &(adapter->q_vector[i])); | |
1190 | pci_disable_msix(adapter->pdev); | |
1191 | kfree(adapter->msix_entries); | |
1192 | adapter->msix_entries = NULL; | |
1193 | return err; | |
1194 | } | |
1195 | ||
1196 | static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter) | |
1197 | { | |
1198 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1199 | ||
1200 | for (i = 0; i < q_vectors; i++) { | |
1201 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[i]; | |
1202 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); | |
1203 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); | |
1204 | q_vector->rxr_count = 0; | |
1205 | q_vector->txr_count = 0; | |
1206 | q_vector->eitr = adapter->eitr_param; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /** | |
1211 | * ixgbevf_request_irq - initialize interrupts | |
1212 | * @adapter: board private structure | |
1213 | * | |
1214 | * Attempts to configure interrupts using the best available | |
1215 | * capabilities of the hardware and kernel. | |
1216 | **/ | |
1217 | static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter) | |
1218 | { | |
1219 | int err = 0; | |
1220 | ||
1221 | err = ixgbevf_request_msix_irqs(adapter); | |
1222 | ||
1223 | if (err) | |
1224 | hw_dbg(&adapter->hw, | |
1225 | "request_irq failed, Error %d\n", err); | |
1226 | ||
1227 | return err; | |
1228 | } | |
1229 | ||
1230 | static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter) | |
1231 | { | |
1232 | struct net_device *netdev = adapter->netdev; | |
1233 | int i, q_vectors; | |
1234 | ||
1235 | q_vectors = adapter->num_msix_vectors; | |
1236 | ||
1237 | i = q_vectors - 1; | |
1238 | ||
1239 | free_irq(adapter->msix_entries[i].vector, netdev); | |
1240 | i--; | |
1241 | ||
1242 | for (; i >= 0; i--) { | |
1243 | free_irq(adapter->msix_entries[i].vector, | |
1244 | adapter->q_vector[i]); | |
1245 | } | |
1246 | ||
1247 | ixgbevf_reset_q_vectors(adapter); | |
1248 | } | |
1249 | ||
1250 | /** | |
1251 | * ixgbevf_irq_disable - Mask off interrupt generation on the NIC | |
1252 | * @adapter: board private structure | |
1253 | **/ | |
1254 | static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter) | |
1255 | { | |
1256 | int i; | |
1257 | struct ixgbe_hw *hw = &adapter->hw; | |
1258 | ||
1259 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0); | |
1260 | ||
1261 | IXGBE_WRITE_FLUSH(hw); | |
1262 | ||
1263 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1264 | synchronize_irq(adapter->msix_entries[i].vector); | |
1265 | } | |
1266 | ||
1267 | /** | |
1268 | * ixgbevf_irq_enable - Enable default interrupt generation settings | |
1269 | * @adapter: board private structure | |
1270 | **/ | |
1271 | static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter, | |
1272 | bool queues, bool flush) | |
1273 | { | |
1274 | struct ixgbe_hw *hw = &adapter->hw; | |
1275 | u32 mask; | |
1276 | u64 qmask; | |
1277 | ||
1278 | mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); | |
1279 | qmask = ~0; | |
1280 | ||
1281 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); | |
1282 | ||
1283 | if (queues) | |
1284 | ixgbevf_irq_enable_queues(adapter, qmask); | |
1285 | ||
1286 | if (flush) | |
1287 | IXGBE_WRITE_FLUSH(hw); | |
1288 | } | |
1289 | ||
1290 | /** | |
1291 | * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset | |
1292 | * @adapter: board private structure | |
1293 | * | |
1294 | * Configure the Tx unit of the MAC after a reset. | |
1295 | **/ | |
1296 | static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter) | |
1297 | { | |
1298 | u64 tdba; | |
1299 | struct ixgbe_hw *hw = &adapter->hw; | |
1300 | u32 i, j, tdlen, txctrl; | |
1301 | ||
1302 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1303 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1304 | struct ixgbevf_ring *ring = &adapter->tx_ring[i]; | |
1305 | j = ring->reg_idx; | |
1306 | tdba = ring->dma; | |
1307 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); | |
1308 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j), | |
1309 | (tdba & DMA_BIT_MASK(32))); | |
1310 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32)); | |
1311 | IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen); | |
1312 | IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0); | |
1313 | IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0); | |
1314 | adapter->tx_ring[i].head = IXGBE_VFTDH(j); | |
1315 | adapter->tx_ring[i].tail = IXGBE_VFTDT(j); | |
1316 | /* Disable Tx Head Writeback RO bit, since this hoses | |
1317 | * bookkeeping if things aren't delivered in order. | |
1318 | */ | |
1319 | txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j)); | |
1320 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; | |
1321 | IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl); | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
1326 | ||
1327 | static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index) | |
1328 | { | |
1329 | struct ixgbevf_ring *rx_ring; | |
1330 | struct ixgbe_hw *hw = &adapter->hw; | |
1331 | u32 srrctl; | |
1332 | ||
1333 | rx_ring = &adapter->rx_ring[index]; | |
1334 | ||
1335 | srrctl = IXGBE_SRRCTL_DROP_EN; | |
1336 | ||
1337 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1338 | u16 bufsz = IXGBEVF_RXBUFFER_2048; | |
1339 | /* grow the amount we can receive on large page machines */ | |
1340 | if (bufsz < (PAGE_SIZE / 2)) | |
1341 | bufsz = (PAGE_SIZE / 2); | |
1342 | /* cap the bufsz at our largest descriptor size */ | |
1343 | bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz); | |
1344 | ||
1345 | srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1346 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1347 | srrctl |= ((IXGBEVF_RX_HDR_SIZE << | |
1348 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
1349 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
1350 | } else { | |
1351 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1352 | ||
1353 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1354 | srrctl |= IXGBEVF_RXBUFFER_2048 >> | |
1355 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1356 | else | |
1357 | srrctl |= rx_ring->rx_buf_len >> | |
1358 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1359 | } | |
1360 | IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl); | |
1361 | } | |
1362 | ||
1363 | /** | |
1364 | * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset | |
1365 | * @adapter: board private structure | |
1366 | * | |
1367 | * Configure the Rx unit of the MAC after a reset. | |
1368 | **/ | |
1369 | static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter) | |
1370 | { | |
1371 | u64 rdba; | |
1372 | struct ixgbe_hw *hw = &adapter->hw; | |
1373 | struct net_device *netdev = adapter->netdev; | |
1374 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1375 | int i, j; | |
1376 | u32 rdlen; | |
1377 | int rx_buf_len; | |
1378 | ||
1379 | /* Decide whether to use packet split mode or not */ | |
1380 | if (netdev->mtu > ETH_DATA_LEN) { | |
1381 | if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE) | |
1382 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
1383 | else | |
1384 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
1385 | } else { | |
1386 | if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE) | |
1387 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
1388 | else | |
1389 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
1390 | } | |
1391 | ||
1392 | /* Set the RX buffer length according to the mode */ | |
1393 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1394 | /* PSRTYPE must be initialized in 82599 */ | |
1395 | u32 psrtype = IXGBE_PSRTYPE_TCPHDR | | |
1396 | IXGBE_PSRTYPE_UDPHDR | | |
1397 | IXGBE_PSRTYPE_IPV4HDR | | |
1398 | IXGBE_PSRTYPE_IPV6HDR | | |
1399 | IXGBE_PSRTYPE_L2HDR; | |
1400 | IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); | |
1401 | rx_buf_len = IXGBEVF_RX_HDR_SIZE; | |
1402 | } else { | |
1403 | IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0); | |
1404 | if (netdev->mtu <= ETH_DATA_LEN) | |
1405 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
1406 | else | |
1407 | rx_buf_len = ALIGN(max_frame, 1024); | |
1408 | } | |
1409 | ||
1410 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); | |
1411 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1412 | * the Base and Length of the Rx Descriptor Ring */ | |
1413 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1414 | rdba = adapter->rx_ring[i].dma; | |
1415 | j = adapter->rx_ring[i].reg_idx; | |
1416 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j), | |
1417 | (rdba & DMA_BIT_MASK(32))); | |
1418 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32)); | |
1419 | IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen); | |
1420 | IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0); | |
1421 | IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0); | |
1422 | adapter->rx_ring[i].head = IXGBE_VFRDH(j); | |
1423 | adapter->rx_ring[i].tail = IXGBE_VFRDT(j); | |
1424 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; | |
1425 | ||
1426 | ixgbevf_configure_srrctl(adapter, j); | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | static void ixgbevf_vlan_rx_register(struct net_device *netdev, | |
1431 | struct vlan_group *grp) | |
1432 | { | |
1433 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1434 | struct ixgbe_hw *hw = &adapter->hw; | |
1435 | int i, j; | |
1436 | u32 ctrl; | |
1437 | ||
1438 | adapter->vlgrp = grp; | |
1439 | ||
1440 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1441 | j = adapter->rx_ring[i].reg_idx; | |
1442 | ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)); | |
1443 | ctrl |= IXGBE_RXDCTL_VME; | |
1444 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), ctrl); | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1449 | { | |
1450 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1451 | struct ixgbe_hw *hw = &adapter->hw; | |
1452 | struct net_device *v_netdev; | |
1453 | ||
1454 | /* add VID to filter table */ | |
1455 | if (hw->mac.ops.set_vfta) | |
1456 | hw->mac.ops.set_vfta(hw, vid, 0, true); | |
1457 | /* | |
1458 | * Copy feature flags from netdev to the vlan netdev for this vid. | |
1459 | * This allows things like TSO to bubble down to our vlan device. | |
1460 | */ | |
1461 | v_netdev = vlan_group_get_device(adapter->vlgrp, vid); | |
1462 | v_netdev->features |= adapter->netdev->features; | |
1463 | vlan_group_set_device(adapter->vlgrp, vid, v_netdev); | |
1464 | } | |
1465 | ||
1466 | static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1467 | { | |
1468 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1469 | struct ixgbe_hw *hw = &adapter->hw; | |
1470 | ||
1471 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
1472 | ixgbevf_irq_disable(adapter); | |
1473 | ||
1474 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1475 | ||
1476 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
1477 | ixgbevf_irq_enable(adapter, true, true); | |
1478 | ||
1479 | /* remove VID from filter table */ | |
1480 | if (hw->mac.ops.set_vfta) | |
1481 | hw->mac.ops.set_vfta(hw, vid, 0, false); | |
1482 | } | |
1483 | ||
1484 | static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter) | |
1485 | { | |
1486 | ixgbevf_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1487 | ||
1488 | if (adapter->vlgrp) { | |
1489 | u16 vid; | |
1490 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1491 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1492 | continue; | |
1493 | ixgbevf_vlan_rx_add_vid(adapter->netdev, vid); | |
1494 | } | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | static u8 *ixgbevf_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, | |
1499 | u32 *vmdq) | |
1500 | { | |
1501 | struct dev_mc_list *mc_ptr; | |
1502 | u8 *addr = *mc_addr_ptr; | |
1503 | *vmdq = 0; | |
1504 | ||
1505 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); | |
1506 | if (mc_ptr->next) | |
1507 | *mc_addr_ptr = mc_ptr->next->dmi_addr; | |
1508 | else | |
1509 | *mc_addr_ptr = NULL; | |
1510 | ||
1511 | return addr; | |
1512 | } | |
1513 | ||
1514 | /** | |
1515 | * ixgbevf_set_rx_mode - Multicast set | |
1516 | * @netdev: network interface device structure | |
1517 | * | |
1518 | * The set_rx_method entry point is called whenever the multicast address | |
1519 | * list or the network interface flags are updated. This routine is | |
1520 | * responsible for configuring the hardware for proper multicast mode. | |
1521 | **/ | |
1522 | static void ixgbevf_set_rx_mode(struct net_device *netdev) | |
1523 | { | |
1524 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1525 | struct ixgbe_hw *hw = &adapter->hw; | |
1526 | u8 *addr_list = NULL; | |
1527 | int addr_count = 0; | |
1528 | ||
1529 | /* reprogram multicast list */ | |
4cd24eaf | 1530 | addr_count = netdev_mc_count(netdev); |
92915f71 GR |
1531 | if (addr_count) |
1532 | addr_list = netdev->mc_list->dmi_addr; | |
1533 | if (hw->mac.ops.update_mc_addr_list) | |
1534 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, | |
1535 | ixgbevf_addr_list_itr); | |
1536 | } | |
1537 | ||
1538 | static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter) | |
1539 | { | |
1540 | int q_idx; | |
1541 | struct ixgbevf_q_vector *q_vector; | |
1542 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1543 | ||
1544 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1545 | struct napi_struct *napi; | |
1546 | q_vector = adapter->q_vector[q_idx]; | |
1547 | if (!q_vector->rxr_count) | |
1548 | continue; | |
1549 | napi = &q_vector->napi; | |
1550 | if (q_vector->rxr_count > 1) | |
1551 | napi->poll = &ixgbevf_clean_rxonly_many; | |
1552 | ||
1553 | napi_enable(napi); | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter) | |
1558 | { | |
1559 | int q_idx; | |
1560 | struct ixgbevf_q_vector *q_vector; | |
1561 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1562 | ||
1563 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1564 | q_vector = adapter->q_vector[q_idx]; | |
1565 | if (!q_vector->rxr_count) | |
1566 | continue; | |
1567 | napi_disable(&q_vector->napi); | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | static void ixgbevf_configure(struct ixgbevf_adapter *adapter) | |
1572 | { | |
1573 | struct net_device *netdev = adapter->netdev; | |
1574 | int i; | |
1575 | ||
1576 | ixgbevf_set_rx_mode(netdev); | |
1577 | ||
1578 | ixgbevf_restore_vlan(adapter); | |
1579 | ||
1580 | ixgbevf_configure_tx(adapter); | |
1581 | ixgbevf_configure_rx(adapter); | |
1582 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1583 | struct ixgbevf_ring *ring = &adapter->rx_ring[i]; | |
1584 | ixgbevf_alloc_rx_buffers(adapter, ring, ring->count); | |
1585 | ring->next_to_use = ring->count - 1; | |
1586 | writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail); | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | #define IXGBE_MAX_RX_DESC_POLL 10 | |
1591 | static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, | |
1592 | int rxr) | |
1593 | { | |
1594 | struct ixgbe_hw *hw = &adapter->hw; | |
1595 | int j = adapter->rx_ring[rxr].reg_idx; | |
1596 | int k; | |
1597 | ||
1598 | for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) { | |
1599 | if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE) | |
1600 | break; | |
1601 | else | |
1602 | msleep(1); | |
1603 | } | |
1604 | if (k >= IXGBE_MAX_RX_DESC_POLL) { | |
1605 | hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d " | |
1606 | "not set within the polling period\n", rxr); | |
1607 | } | |
1608 | ||
1609 | ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr], | |
1610 | (adapter->rx_ring[rxr].count - 1)); | |
1611 | } | |
1612 | ||
33bd9f60 GR |
1613 | static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter) |
1614 | { | |
1615 | /* Only save pre-reset stats if there are some */ | |
1616 | if (adapter->stats.vfgprc || adapter->stats.vfgptc) { | |
1617 | adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc - | |
1618 | adapter->stats.base_vfgprc; | |
1619 | adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc - | |
1620 | adapter->stats.base_vfgptc; | |
1621 | adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc - | |
1622 | adapter->stats.base_vfgorc; | |
1623 | adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc - | |
1624 | adapter->stats.base_vfgotc; | |
1625 | adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc - | |
1626 | adapter->stats.base_vfmprc; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter) | |
1631 | { | |
1632 | struct ixgbe_hw *hw = &adapter->hw; | |
1633 | ||
1634 | adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC); | |
1635 | adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB); | |
1636 | adapter->stats.last_vfgorc |= | |
1637 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32); | |
1638 | adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC); | |
1639 | adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB); | |
1640 | adapter->stats.last_vfgotc |= | |
1641 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32); | |
1642 | adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC); | |
1643 | ||
1644 | adapter->stats.base_vfgprc = adapter->stats.last_vfgprc; | |
1645 | adapter->stats.base_vfgorc = adapter->stats.last_vfgorc; | |
1646 | adapter->stats.base_vfgptc = adapter->stats.last_vfgptc; | |
1647 | adapter->stats.base_vfgotc = adapter->stats.last_vfgotc; | |
1648 | adapter->stats.base_vfmprc = adapter->stats.last_vfmprc; | |
1649 | } | |
1650 | ||
92915f71 GR |
1651 | static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter) |
1652 | { | |
1653 | struct net_device *netdev = adapter->netdev; | |
1654 | struct ixgbe_hw *hw = &adapter->hw; | |
1655 | int i, j = 0; | |
1656 | int num_rx_rings = adapter->num_rx_queues; | |
1657 | u32 txdctl, rxdctl; | |
1658 | ||
1659 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1660 | j = adapter->tx_ring[i].reg_idx; | |
1661 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1662 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ | |
1663 | txdctl |= (8 << 16); | |
1664 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl); | |
1665 | } | |
1666 | ||
1667 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1668 | j = adapter->tx_ring[i].reg_idx; | |
1669 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1670 | txdctl |= IXGBE_TXDCTL_ENABLE; | |
1671 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl); | |
1672 | } | |
1673 | ||
1674 | for (i = 0; i < num_rx_rings; i++) { | |
1675 | j = adapter->rx_ring[i].reg_idx; | |
1676 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)); | |
1677 | rxdctl |= IXGBE_RXDCTL_ENABLE; | |
1678 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl); | |
1679 | ixgbevf_rx_desc_queue_enable(adapter, i); | |
1680 | } | |
1681 | ||
1682 | ixgbevf_configure_msix(adapter); | |
1683 | ||
1684 | if (hw->mac.ops.set_rar) { | |
1685 | if (is_valid_ether_addr(hw->mac.addr)) | |
1686 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0); | |
1687 | else | |
1688 | hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0); | |
1689 | } | |
1690 | ||
1691 | clear_bit(__IXGBEVF_DOWN, &adapter->state); | |
1692 | ixgbevf_napi_enable_all(adapter); | |
1693 | ||
1694 | /* enable transmits */ | |
1695 | netif_tx_start_all_queues(netdev); | |
1696 | ||
33bd9f60 GR |
1697 | ixgbevf_save_reset_stats(adapter); |
1698 | ixgbevf_init_last_counter_stats(adapter); | |
1699 | ||
92915f71 GR |
1700 | /* bring the link up in the watchdog, this could race with our first |
1701 | * link up interrupt but shouldn't be a problem */ | |
1702 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
1703 | adapter->link_check_timeout = jiffies; | |
1704 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | int ixgbevf_up(struct ixgbevf_adapter *adapter) | |
1709 | { | |
1710 | int err; | |
1711 | struct ixgbe_hw *hw = &adapter->hw; | |
1712 | ||
1713 | ixgbevf_configure(adapter); | |
1714 | ||
1715 | err = ixgbevf_up_complete(adapter); | |
1716 | ||
1717 | /* clear any pending interrupts, may auto mask */ | |
1718 | IXGBE_READ_REG(hw, IXGBE_VTEICR); | |
1719 | ||
1720 | ixgbevf_irq_enable(adapter, true, true); | |
1721 | ||
1722 | return err; | |
1723 | } | |
1724 | ||
1725 | /** | |
1726 | * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue | |
1727 | * @adapter: board private structure | |
1728 | * @rx_ring: ring to free buffers from | |
1729 | **/ | |
1730 | static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter, | |
1731 | struct ixgbevf_ring *rx_ring) | |
1732 | { | |
1733 | struct pci_dev *pdev = adapter->pdev; | |
1734 | unsigned long size; | |
1735 | unsigned int i; | |
1736 | ||
c0456c23 GR |
1737 | if (!rx_ring->rx_buffer_info) |
1738 | return; | |
92915f71 | 1739 | |
c0456c23 | 1740 | /* Free all the Rx ring sk_buffs */ |
92915f71 GR |
1741 | for (i = 0; i < rx_ring->count; i++) { |
1742 | struct ixgbevf_rx_buffer *rx_buffer_info; | |
1743 | ||
1744 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
1745 | if (rx_buffer_info->dma) { | |
1746 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
1747 | rx_ring->rx_buf_len, | |
1748 | PCI_DMA_FROMDEVICE); | |
1749 | rx_buffer_info->dma = 0; | |
1750 | } | |
1751 | if (rx_buffer_info->skb) { | |
1752 | struct sk_buff *skb = rx_buffer_info->skb; | |
1753 | rx_buffer_info->skb = NULL; | |
1754 | do { | |
1755 | struct sk_buff *this = skb; | |
1756 | skb = skb->prev; | |
1757 | dev_kfree_skb(this); | |
1758 | } while (skb); | |
1759 | } | |
1760 | if (!rx_buffer_info->page) | |
1761 | continue; | |
1762 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, | |
1763 | PCI_DMA_FROMDEVICE); | |
1764 | rx_buffer_info->page_dma = 0; | |
1765 | put_page(rx_buffer_info->page); | |
1766 | rx_buffer_info->page = NULL; | |
1767 | rx_buffer_info->page_offset = 0; | |
1768 | } | |
1769 | ||
1770 | size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count; | |
1771 | memset(rx_ring->rx_buffer_info, 0, size); | |
1772 | ||
1773 | /* Zero out the descriptor ring */ | |
1774 | memset(rx_ring->desc, 0, rx_ring->size); | |
1775 | ||
1776 | rx_ring->next_to_clean = 0; | |
1777 | rx_ring->next_to_use = 0; | |
1778 | ||
1779 | if (rx_ring->head) | |
1780 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1781 | if (rx_ring->tail) | |
1782 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1783 | } | |
1784 | ||
1785 | /** | |
1786 | * ixgbevf_clean_tx_ring - Free Tx Buffers | |
1787 | * @adapter: board private structure | |
1788 | * @tx_ring: ring to be cleaned | |
1789 | **/ | |
1790 | static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter, | |
1791 | struct ixgbevf_ring *tx_ring) | |
1792 | { | |
1793 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
1794 | unsigned long size; | |
1795 | unsigned int i; | |
1796 | ||
c0456c23 GR |
1797 | if (!tx_ring->tx_buffer_info) |
1798 | return; | |
1799 | ||
92915f71 GR |
1800 | /* Free all the Tx ring sk_buffs */ |
1801 | ||
1802 | for (i = 0; i < tx_ring->count; i++) { | |
1803 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
1804 | ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
1805 | } | |
1806 | ||
1807 | size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count; | |
1808 | memset(tx_ring->tx_buffer_info, 0, size); | |
1809 | ||
1810 | memset(tx_ring->desc, 0, tx_ring->size); | |
1811 | ||
1812 | tx_ring->next_to_use = 0; | |
1813 | tx_ring->next_to_clean = 0; | |
1814 | ||
1815 | if (tx_ring->head) | |
1816 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1817 | if (tx_ring->tail) | |
1818 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1819 | } | |
1820 | ||
1821 | /** | |
1822 | * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues | |
1823 | * @adapter: board private structure | |
1824 | **/ | |
1825 | static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter) | |
1826 | { | |
1827 | int i; | |
1828 | ||
1829 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1830 | ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
1831 | } | |
1832 | ||
1833 | /** | |
1834 | * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues | |
1835 | * @adapter: board private structure | |
1836 | **/ | |
1837 | static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter) | |
1838 | { | |
1839 | int i; | |
1840 | ||
1841 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1842 | ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
1843 | } | |
1844 | ||
1845 | void ixgbevf_down(struct ixgbevf_adapter *adapter) | |
1846 | { | |
1847 | struct net_device *netdev = adapter->netdev; | |
1848 | struct ixgbe_hw *hw = &adapter->hw; | |
1849 | u32 txdctl; | |
1850 | int i, j; | |
1851 | ||
1852 | /* signal that we are down to the interrupt handler */ | |
1853 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
1854 | /* disable receives */ | |
1855 | ||
1856 | netif_tx_disable(netdev); | |
1857 | ||
1858 | msleep(10); | |
1859 | ||
1860 | netif_tx_stop_all_queues(netdev); | |
1861 | ||
1862 | ixgbevf_irq_disable(adapter); | |
1863 | ||
1864 | ixgbevf_napi_disable_all(adapter); | |
1865 | ||
1866 | del_timer_sync(&adapter->watchdog_timer); | |
1867 | /* can't call flush scheduled work here because it can deadlock | |
1868 | * if linkwatch_event tries to acquire the rtnl_lock which we are | |
1869 | * holding */ | |
1870 | while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK) | |
1871 | msleep(1); | |
1872 | ||
1873 | /* disable transmits in the hardware now that interrupts are off */ | |
1874 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1875 | j = adapter->tx_ring[i].reg_idx; | |
1876 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1877 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), | |
1878 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); | |
1879 | } | |
1880 | ||
1881 | netif_carrier_off(netdev); | |
1882 | ||
1883 | if (!pci_channel_offline(adapter->pdev)) | |
1884 | ixgbevf_reset(adapter); | |
1885 | ||
1886 | ixgbevf_clean_all_tx_rings(adapter); | |
1887 | ixgbevf_clean_all_rx_rings(adapter); | |
1888 | } | |
1889 | ||
1890 | void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter) | |
1891 | { | |
c0456c23 GR |
1892 | struct ixgbe_hw *hw = &adapter->hw; |
1893 | ||
92915f71 | 1894 | WARN_ON(in_interrupt()); |
c0456c23 | 1895 | |
92915f71 GR |
1896 | while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state)) |
1897 | msleep(1); | |
1898 | ||
c0456c23 GR |
1899 | /* |
1900 | * Check if PF is up before re-init. If not then skip until | |
1901 | * later when the PF is up and ready to service requests from | |
1902 | * the VF via mailbox. If the VF is up and running then the | |
1903 | * watchdog task will continue to schedule reset tasks until | |
1904 | * the PF is up and running. | |
1905 | */ | |
1906 | if (!hw->mac.ops.reset_hw(hw)) { | |
1907 | ixgbevf_down(adapter); | |
1908 | ixgbevf_up(adapter); | |
1909 | } | |
92915f71 GR |
1910 | |
1911 | clear_bit(__IXGBEVF_RESETTING, &adapter->state); | |
1912 | } | |
1913 | ||
1914 | void ixgbevf_reset(struct ixgbevf_adapter *adapter) | |
1915 | { | |
1916 | struct ixgbe_hw *hw = &adapter->hw; | |
1917 | struct net_device *netdev = adapter->netdev; | |
1918 | ||
1919 | if (hw->mac.ops.reset_hw(hw)) | |
1920 | hw_dbg(hw, "PF still resetting\n"); | |
1921 | else | |
1922 | hw->mac.ops.init_hw(hw); | |
1923 | ||
1924 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1925 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1926 | netdev->addr_len); | |
1927 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1928 | netdev->addr_len); | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter, | |
1933 | int vectors) | |
1934 | { | |
1935 | int err, vector_threshold; | |
1936 | ||
1937 | /* We'll want at least 3 (vector_threshold): | |
1938 | * 1) TxQ[0] Cleanup | |
1939 | * 2) RxQ[0] Cleanup | |
1940 | * 3) Other (Link Status Change, etc.) | |
1941 | */ | |
1942 | vector_threshold = MIN_MSIX_COUNT; | |
1943 | ||
1944 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1945 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1946 | * Right now, we simply care about how many we'll get; we'll | |
1947 | * set them up later while requesting irq's. | |
1948 | */ | |
1949 | while (vectors >= vector_threshold) { | |
1950 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
1951 | vectors); | |
1952 | if (!err) /* Success in acquiring all requested vectors. */ | |
1953 | break; | |
1954 | else if (err < 0) | |
1955 | vectors = 0; /* Nasty failure, quit now */ | |
1956 | else /* err == number of vectors we should try again with */ | |
1957 | vectors = err; | |
1958 | } | |
1959 | ||
1960 | if (vectors < vector_threshold) { | |
1961 | /* Can't allocate enough MSI-X interrupts? Oh well. | |
1962 | * This just means we'll go with either a single MSI | |
1963 | * vector or fall back to legacy interrupts. | |
1964 | */ | |
1965 | hw_dbg(&adapter->hw, | |
1966 | "Unable to allocate MSI-X interrupts\n"); | |
1967 | kfree(adapter->msix_entries); | |
1968 | adapter->msix_entries = NULL; | |
1969 | } else { | |
1970 | /* | |
1971 | * Adjust for only the vectors we'll use, which is minimum | |
1972 | * of max_msix_q_vectors + NON_Q_VECTORS, or the number of | |
1973 | * vectors we were allocated. | |
1974 | */ | |
1975 | adapter->num_msix_vectors = vectors; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | /* | |
1980 | * ixgbe_set_num_queues: Allocate queues for device, feature dependant | |
1981 | * @adapter: board private structure to initialize | |
1982 | * | |
1983 | * This is the top level queue allocation routine. The order here is very | |
1984 | * important, starting with the "most" number of features turned on at once, | |
1985 | * and ending with the smallest set of features. This way large combinations | |
1986 | * can be allocated if they're turned on, and smaller combinations are the | |
1987 | * fallthrough conditions. | |
1988 | * | |
1989 | **/ | |
1990 | static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter) | |
1991 | { | |
1992 | /* Start with base case */ | |
1993 | adapter->num_rx_queues = 1; | |
1994 | adapter->num_tx_queues = 1; | |
1995 | adapter->num_rx_pools = adapter->num_rx_queues; | |
1996 | adapter->num_rx_queues_per_pool = 1; | |
1997 | } | |
1998 | ||
1999 | /** | |
2000 | * ixgbevf_alloc_queues - Allocate memory for all rings | |
2001 | * @adapter: board private structure to initialize | |
2002 | * | |
2003 | * We allocate one ring per queue at run-time since we don't know the | |
2004 | * number of queues at compile-time. The polling_netdev array is | |
2005 | * intended for Multiqueue, but should work fine with a single queue. | |
2006 | **/ | |
2007 | static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter) | |
2008 | { | |
2009 | int i; | |
2010 | ||
2011 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
2012 | sizeof(struct ixgbevf_ring), GFP_KERNEL); | |
2013 | if (!adapter->tx_ring) | |
2014 | goto err_tx_ring_allocation; | |
2015 | ||
2016 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
2017 | sizeof(struct ixgbevf_ring), GFP_KERNEL); | |
2018 | if (!adapter->rx_ring) | |
2019 | goto err_rx_ring_allocation; | |
2020 | ||
2021 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2022 | adapter->tx_ring[i].count = adapter->tx_ring_count; | |
2023 | adapter->tx_ring[i].queue_index = i; | |
2024 | adapter->tx_ring[i].reg_idx = i; | |
2025 | } | |
2026 | ||
2027 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2028 | adapter->rx_ring[i].count = adapter->rx_ring_count; | |
2029 | adapter->rx_ring[i].queue_index = i; | |
2030 | adapter->rx_ring[i].reg_idx = i; | |
2031 | } | |
2032 | ||
2033 | return 0; | |
2034 | ||
2035 | err_rx_ring_allocation: | |
2036 | kfree(adapter->tx_ring); | |
2037 | err_tx_ring_allocation: | |
2038 | return -ENOMEM; | |
2039 | } | |
2040 | ||
2041 | /** | |
2042 | * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
2043 | * @adapter: board private structure to initialize | |
2044 | * | |
2045 | * Attempt to configure the interrupts using the best available | |
2046 | * capabilities of the hardware and the kernel. | |
2047 | **/ | |
2048 | static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2049 | { | |
2050 | int err = 0; | |
2051 | int vector, v_budget; | |
2052 | ||
2053 | /* | |
2054 | * It's easy to be greedy for MSI-X vectors, but it really | |
2055 | * doesn't do us much good if we have a lot more vectors | |
2056 | * than CPU's. So let's be conservative and only ask for | |
2057 | * (roughly) twice the number of vectors as there are CPU's. | |
2058 | */ | |
2059 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, | |
2060 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; | |
2061 | ||
2062 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
2063 | * mean we disable MSI-X capabilities of the adapter. */ | |
2064 | adapter->msix_entries = kcalloc(v_budget, | |
2065 | sizeof(struct msix_entry), GFP_KERNEL); | |
2066 | if (!adapter->msix_entries) { | |
2067 | err = -ENOMEM; | |
2068 | goto out; | |
2069 | } | |
2070 | ||
2071 | for (vector = 0; vector < v_budget; vector++) | |
2072 | adapter->msix_entries[vector].entry = vector; | |
2073 | ||
2074 | ixgbevf_acquire_msix_vectors(adapter, v_budget); | |
2075 | ||
2076 | out: | |
2077 | return err; | |
2078 | } | |
2079 | ||
2080 | /** | |
2081 | * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors | |
2082 | * @adapter: board private structure to initialize | |
2083 | * | |
2084 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
2085 | * return -ENOMEM. | |
2086 | **/ | |
2087 | static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter) | |
2088 | { | |
2089 | int q_idx, num_q_vectors; | |
2090 | struct ixgbevf_q_vector *q_vector; | |
2091 | int napi_vectors; | |
2092 | int (*poll)(struct napi_struct *, int); | |
2093 | ||
2094 | num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2095 | napi_vectors = adapter->num_rx_queues; | |
2096 | poll = &ixgbevf_clean_rxonly; | |
2097 | ||
2098 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
2099 | q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL); | |
2100 | if (!q_vector) | |
2101 | goto err_out; | |
2102 | q_vector->adapter = adapter; | |
2103 | q_vector->v_idx = q_idx; | |
2104 | q_vector->eitr = adapter->eitr_param; | |
2105 | if (q_idx < napi_vectors) | |
2106 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
2107 | (*poll), 64); | |
2108 | adapter->q_vector[q_idx] = q_vector; | |
2109 | } | |
2110 | ||
2111 | return 0; | |
2112 | ||
2113 | err_out: | |
2114 | while (q_idx) { | |
2115 | q_idx--; | |
2116 | q_vector = adapter->q_vector[q_idx]; | |
2117 | netif_napi_del(&q_vector->napi); | |
2118 | kfree(q_vector); | |
2119 | adapter->q_vector[q_idx] = NULL; | |
2120 | } | |
2121 | return -ENOMEM; | |
2122 | } | |
2123 | ||
2124 | /** | |
2125 | * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors | |
2126 | * @adapter: board private structure to initialize | |
2127 | * | |
2128 | * This function frees the memory allocated to the q_vectors. In addition if | |
2129 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
2130 | * to freeing the q_vector. | |
2131 | **/ | |
2132 | static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter) | |
2133 | { | |
2134 | int q_idx, num_q_vectors; | |
2135 | int napi_vectors; | |
2136 | ||
2137 | num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2138 | napi_vectors = adapter->num_rx_queues; | |
2139 | ||
2140 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
2141 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx]; | |
2142 | ||
2143 | adapter->q_vector[q_idx] = NULL; | |
2144 | if (q_idx < napi_vectors) | |
2145 | netif_napi_del(&q_vector->napi); | |
2146 | kfree(q_vector); | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | /** | |
2151 | * ixgbevf_reset_interrupt_capability - Reset MSIX setup | |
2152 | * @adapter: board private structure | |
2153 | * | |
2154 | **/ | |
2155 | static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2156 | { | |
2157 | pci_disable_msix(adapter->pdev); | |
2158 | kfree(adapter->msix_entries); | |
2159 | adapter->msix_entries = NULL; | |
2160 | ||
2161 | return; | |
2162 | } | |
2163 | ||
2164 | /** | |
2165 | * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init | |
2166 | * @adapter: board private structure to initialize | |
2167 | * | |
2168 | **/ | |
2169 | static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter) | |
2170 | { | |
2171 | int err; | |
2172 | ||
2173 | /* Number of supported queues */ | |
2174 | ixgbevf_set_num_queues(adapter); | |
2175 | ||
2176 | err = ixgbevf_set_interrupt_capability(adapter); | |
2177 | if (err) { | |
2178 | hw_dbg(&adapter->hw, | |
2179 | "Unable to setup interrupt capabilities\n"); | |
2180 | goto err_set_interrupt; | |
2181 | } | |
2182 | ||
2183 | err = ixgbevf_alloc_q_vectors(adapter); | |
2184 | if (err) { | |
2185 | hw_dbg(&adapter->hw, "Unable to allocate memory for queue " | |
2186 | "vectors\n"); | |
2187 | goto err_alloc_q_vectors; | |
2188 | } | |
2189 | ||
2190 | err = ixgbevf_alloc_queues(adapter); | |
2191 | if (err) { | |
2192 | printk(KERN_ERR "Unable to allocate memory for queues\n"); | |
2193 | goto err_alloc_queues; | |
2194 | } | |
2195 | ||
2196 | hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, " | |
2197 | "Tx Queue count = %u\n", | |
2198 | (adapter->num_rx_queues > 1) ? "Enabled" : | |
2199 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); | |
2200 | ||
2201 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
2202 | ||
2203 | return 0; | |
2204 | err_alloc_queues: | |
2205 | ixgbevf_free_q_vectors(adapter); | |
2206 | err_alloc_q_vectors: | |
2207 | ixgbevf_reset_interrupt_capability(adapter); | |
2208 | err_set_interrupt: | |
2209 | return err; | |
2210 | } | |
2211 | ||
2212 | /** | |
2213 | * ixgbevf_sw_init - Initialize general software structures | |
2214 | * (struct ixgbevf_adapter) | |
2215 | * @adapter: board private structure to initialize | |
2216 | * | |
2217 | * ixgbevf_sw_init initializes the Adapter private data structure. | |
2218 | * Fields are initialized based on PCI device information and | |
2219 | * OS network device settings (MTU size). | |
2220 | **/ | |
2221 | static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter) | |
2222 | { | |
2223 | struct ixgbe_hw *hw = &adapter->hw; | |
2224 | struct pci_dev *pdev = adapter->pdev; | |
2225 | int err; | |
2226 | ||
2227 | /* PCI config space info */ | |
2228 | ||
2229 | hw->vendor_id = pdev->vendor; | |
2230 | hw->device_id = pdev->device; | |
2231 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2232 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2233 | hw->subsystem_device_id = pdev->subsystem_device; | |
2234 | ||
2235 | hw->mbx.ops.init_params(hw); | |
2236 | hw->mac.max_tx_queues = MAX_TX_QUEUES; | |
2237 | hw->mac.max_rx_queues = MAX_RX_QUEUES; | |
2238 | err = hw->mac.ops.reset_hw(hw); | |
2239 | if (err) { | |
2240 | dev_info(&pdev->dev, | |
2241 | "PF still in reset state, assigning new address\n"); | |
2242 | random_ether_addr(hw->mac.addr); | |
2243 | } else { | |
2244 | err = hw->mac.ops.init_hw(hw); | |
2245 | if (err) { | |
2246 | printk(KERN_ERR "init_shared_code failed: %d\n", err); | |
2247 | goto out; | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | /* Enable dynamic interrupt throttling rates */ | |
2252 | adapter->eitr_param = 20000; | |
2253 | adapter->itr_setting = 1; | |
2254 | ||
2255 | /* set defaults for eitr in MegaBytes */ | |
2256 | adapter->eitr_low = 10; | |
2257 | adapter->eitr_high = 20; | |
2258 | ||
2259 | /* set default ring sizes */ | |
2260 | adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD; | |
2261 | adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD; | |
2262 | ||
2263 | /* enable rx csum by default */ | |
2264 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; | |
2265 | ||
2266 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
2267 | ||
2268 | out: | |
2269 | return err; | |
2270 | } | |
2271 | ||
92915f71 GR |
2272 | #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \ |
2273 | { \ | |
2274 | u32 current_counter = IXGBE_READ_REG(hw, reg); \ | |
2275 | if (current_counter < last_counter) \ | |
2276 | counter += 0x100000000LL; \ | |
2277 | last_counter = current_counter; \ | |
2278 | counter &= 0xFFFFFFFF00000000LL; \ | |
2279 | counter |= current_counter; \ | |
2280 | } | |
2281 | ||
2282 | #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \ | |
2283 | { \ | |
2284 | u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \ | |
2285 | u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \ | |
2286 | u64 current_counter = (current_counter_msb << 32) | \ | |
2287 | current_counter_lsb; \ | |
2288 | if (current_counter < last_counter) \ | |
2289 | counter += 0x1000000000LL; \ | |
2290 | last_counter = current_counter; \ | |
2291 | counter &= 0xFFFFFFF000000000LL; \ | |
2292 | counter |= current_counter; \ | |
2293 | } | |
2294 | /** | |
2295 | * ixgbevf_update_stats - Update the board statistics counters. | |
2296 | * @adapter: board private structure | |
2297 | **/ | |
2298 | void ixgbevf_update_stats(struct ixgbevf_adapter *adapter) | |
2299 | { | |
2300 | struct ixgbe_hw *hw = &adapter->hw; | |
2301 | ||
2302 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc, | |
2303 | adapter->stats.vfgprc); | |
2304 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc, | |
2305 | adapter->stats.vfgptc); | |
2306 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB, | |
2307 | adapter->stats.last_vfgorc, | |
2308 | adapter->stats.vfgorc); | |
2309 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB, | |
2310 | adapter->stats.last_vfgotc, | |
2311 | adapter->stats.vfgotc); | |
2312 | UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc, | |
2313 | adapter->stats.vfmprc); | |
2314 | ||
2315 | /* Fill out the OS statistics structure */ | |
2316 | adapter->net_stats.multicast = adapter->stats.vfmprc - | |
2317 | adapter->stats.base_vfmprc; | |
2318 | } | |
2319 | ||
2320 | /** | |
2321 | * ixgbevf_watchdog - Timer Call-back | |
2322 | * @data: pointer to adapter cast into an unsigned long | |
2323 | **/ | |
2324 | static void ixgbevf_watchdog(unsigned long data) | |
2325 | { | |
2326 | struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data; | |
2327 | struct ixgbe_hw *hw = &adapter->hw; | |
2328 | u64 eics = 0; | |
2329 | int i; | |
2330 | ||
2331 | /* | |
2332 | * Do the watchdog outside of interrupt context due to the lovely | |
2333 | * delays that some of the newer hardware requires | |
2334 | */ | |
2335 | ||
2336 | if (test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
2337 | goto watchdog_short_circuit; | |
2338 | ||
2339 | /* get one bit for every active tx/rx interrupt vector */ | |
2340 | for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) { | |
2341 | struct ixgbevf_q_vector *qv = adapter->q_vector[i]; | |
2342 | if (qv->rxr_count || qv->txr_count) | |
2343 | eics |= (1 << i); | |
2344 | } | |
2345 | ||
2346 | IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics); | |
2347 | ||
2348 | watchdog_short_circuit: | |
2349 | schedule_work(&adapter->watchdog_task); | |
2350 | } | |
2351 | ||
2352 | /** | |
2353 | * ixgbevf_tx_timeout - Respond to a Tx Hang | |
2354 | * @netdev: network interface device structure | |
2355 | **/ | |
2356 | static void ixgbevf_tx_timeout(struct net_device *netdev) | |
2357 | { | |
2358 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2359 | ||
2360 | /* Do the reset outside of interrupt context */ | |
2361 | schedule_work(&adapter->reset_task); | |
2362 | } | |
2363 | ||
2364 | static void ixgbevf_reset_task(struct work_struct *work) | |
2365 | { | |
2366 | struct ixgbevf_adapter *adapter; | |
2367 | adapter = container_of(work, struct ixgbevf_adapter, reset_task); | |
2368 | ||
2369 | /* If we're already down or resetting, just bail */ | |
2370 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
2371 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
2372 | return; | |
2373 | ||
2374 | adapter->tx_timeout_count++; | |
2375 | ||
2376 | ixgbevf_reinit_locked(adapter); | |
2377 | } | |
2378 | ||
2379 | /** | |
2380 | * ixgbevf_watchdog_task - worker thread to bring link up | |
2381 | * @work: pointer to work_struct containing our data | |
2382 | **/ | |
2383 | static void ixgbevf_watchdog_task(struct work_struct *work) | |
2384 | { | |
2385 | struct ixgbevf_adapter *adapter = container_of(work, | |
2386 | struct ixgbevf_adapter, | |
2387 | watchdog_task); | |
2388 | struct net_device *netdev = adapter->netdev; | |
2389 | struct ixgbe_hw *hw = &adapter->hw; | |
2390 | u32 link_speed = adapter->link_speed; | |
2391 | bool link_up = adapter->link_up; | |
2392 | ||
2393 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; | |
2394 | ||
2395 | /* | |
2396 | * Always check the link on the watchdog because we have | |
2397 | * no LSC interrupt | |
2398 | */ | |
2399 | if (hw->mac.ops.check_link) { | |
2400 | if ((hw->mac.ops.check_link(hw, &link_speed, | |
2401 | &link_up, false)) != 0) { | |
2402 | adapter->link_up = link_up; | |
2403 | adapter->link_speed = link_speed; | |
da6b3330 GR |
2404 | netif_carrier_off(netdev); |
2405 | netif_tx_stop_all_queues(netdev); | |
92915f71 GR |
2406 | schedule_work(&adapter->reset_task); |
2407 | goto pf_has_reset; | |
2408 | } | |
2409 | } else { | |
2410 | /* always assume link is up, if no check link | |
2411 | * function */ | |
2412 | link_speed = IXGBE_LINK_SPEED_10GB_FULL; | |
2413 | link_up = true; | |
2414 | } | |
2415 | adapter->link_up = link_up; | |
2416 | adapter->link_speed = link_speed; | |
2417 | ||
2418 | if (link_up) { | |
2419 | if (!netif_carrier_ok(netdev)) { | |
2420 | hw_dbg(&adapter->hw, "NIC Link is Up %s, ", | |
2421 | ((link_speed == IXGBE_LINK_SPEED_10GB_FULL) ? | |
29b8dd02 | 2422 | "10 Gbps\n" : "1 Gbps\n")); |
92915f71 GR |
2423 | netif_carrier_on(netdev); |
2424 | netif_tx_wake_all_queues(netdev); | |
2425 | } else { | |
2426 | /* Force detection of hung controller */ | |
2427 | adapter->detect_tx_hung = true; | |
2428 | } | |
2429 | } else { | |
2430 | adapter->link_up = false; | |
2431 | adapter->link_speed = 0; | |
2432 | if (netif_carrier_ok(netdev)) { | |
2433 | hw_dbg(&adapter->hw, "NIC Link is Down\n"); | |
2434 | netif_carrier_off(netdev); | |
2435 | netif_tx_stop_all_queues(netdev); | |
2436 | } | |
2437 | } | |
2438 | ||
92915f71 GR |
2439 | ixgbevf_update_stats(adapter); |
2440 | ||
33bd9f60 | 2441 | pf_has_reset: |
92915f71 GR |
2442 | /* Force detection of hung controller every watchdog period */ |
2443 | adapter->detect_tx_hung = true; | |
2444 | ||
2445 | /* Reset the timer */ | |
2446 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
2447 | mod_timer(&adapter->watchdog_timer, | |
2448 | round_jiffies(jiffies + (2 * HZ))); | |
2449 | ||
2450 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; | |
2451 | } | |
2452 | ||
2453 | /** | |
2454 | * ixgbevf_free_tx_resources - Free Tx Resources per Queue | |
2455 | * @adapter: board private structure | |
2456 | * @tx_ring: Tx descriptor ring for a specific queue | |
2457 | * | |
2458 | * Free all transmit software resources | |
2459 | **/ | |
2460 | void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter, | |
2461 | struct ixgbevf_ring *tx_ring) | |
2462 | { | |
2463 | struct pci_dev *pdev = adapter->pdev; | |
2464 | ||
92915f71 GR |
2465 | ixgbevf_clean_tx_ring(adapter, tx_ring); |
2466 | ||
2467 | vfree(tx_ring->tx_buffer_info); | |
2468 | tx_ring->tx_buffer_info = NULL; | |
2469 | ||
2470 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
2471 | ||
2472 | tx_ring->desc = NULL; | |
2473 | } | |
2474 | ||
2475 | /** | |
2476 | * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues | |
2477 | * @adapter: board private structure | |
2478 | * | |
2479 | * Free all transmit software resources | |
2480 | **/ | |
2481 | static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter) | |
2482 | { | |
2483 | int i; | |
2484 | ||
2485 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2486 | if (adapter->tx_ring[i].desc) | |
2487 | ixgbevf_free_tx_resources(adapter, | |
2488 | &adapter->tx_ring[i]); | |
2489 | ||
2490 | } | |
2491 | ||
2492 | /** | |
2493 | * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors) | |
2494 | * @adapter: board private structure | |
2495 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
2496 | * | |
2497 | * Return 0 on success, negative on failure | |
2498 | **/ | |
2499 | int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter, | |
2500 | struct ixgbevf_ring *tx_ring) | |
2501 | { | |
2502 | struct pci_dev *pdev = adapter->pdev; | |
2503 | int size; | |
2504 | ||
2505 | size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count; | |
2506 | tx_ring->tx_buffer_info = vmalloc(size); | |
2507 | if (!tx_ring->tx_buffer_info) | |
2508 | goto err; | |
2509 | memset(tx_ring->tx_buffer_info, 0, size); | |
2510 | ||
2511 | /* round up to nearest 4K */ | |
2512 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); | |
2513 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2514 | ||
2515 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
2516 | &tx_ring->dma); | |
2517 | if (!tx_ring->desc) | |
2518 | goto err; | |
2519 | ||
2520 | tx_ring->next_to_use = 0; | |
2521 | tx_ring->next_to_clean = 0; | |
2522 | tx_ring->work_limit = tx_ring->count; | |
2523 | return 0; | |
2524 | ||
2525 | err: | |
2526 | vfree(tx_ring->tx_buffer_info); | |
2527 | tx_ring->tx_buffer_info = NULL; | |
2528 | hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit " | |
2529 | "descriptor ring\n"); | |
2530 | return -ENOMEM; | |
2531 | } | |
2532 | ||
2533 | /** | |
2534 | * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources | |
2535 | * @adapter: board private structure | |
2536 | * | |
2537 | * If this function returns with an error, then it's possible one or | |
2538 | * more of the rings is populated (while the rest are not). It is the | |
2539 | * callers duty to clean those orphaned rings. | |
2540 | * | |
2541 | * Return 0 on success, negative on failure | |
2542 | **/ | |
2543 | static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter) | |
2544 | { | |
2545 | int i, err = 0; | |
2546 | ||
2547 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2548 | err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
2549 | if (!err) | |
2550 | continue; | |
2551 | hw_dbg(&adapter->hw, | |
2552 | "Allocation for Tx Queue %u failed\n", i); | |
2553 | break; | |
2554 | } | |
2555 | ||
2556 | return err; | |
2557 | } | |
2558 | ||
2559 | /** | |
2560 | * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors) | |
2561 | * @adapter: board private structure | |
2562 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
2563 | * | |
2564 | * Returns 0 on success, negative on failure | |
2565 | **/ | |
2566 | int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter, | |
2567 | struct ixgbevf_ring *rx_ring) | |
2568 | { | |
2569 | struct pci_dev *pdev = adapter->pdev; | |
2570 | int size; | |
2571 | ||
2572 | size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count; | |
2573 | rx_ring->rx_buffer_info = vmalloc(size); | |
2574 | if (!rx_ring->rx_buffer_info) { | |
2575 | hw_dbg(&adapter->hw, | |
2576 | "Unable to vmalloc buffer memory for " | |
2577 | "the receive descriptor ring\n"); | |
2578 | goto alloc_failed; | |
2579 | } | |
2580 | memset(rx_ring->rx_buffer_info, 0, size); | |
2581 | ||
2582 | /* Round up to nearest 4K */ | |
2583 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); | |
2584 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2585 | ||
2586 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
2587 | &rx_ring->dma); | |
2588 | ||
2589 | if (!rx_ring->desc) { | |
2590 | hw_dbg(&adapter->hw, | |
2591 | "Unable to allocate memory for " | |
2592 | "the receive descriptor ring\n"); | |
2593 | vfree(rx_ring->rx_buffer_info); | |
2594 | rx_ring->rx_buffer_info = NULL; | |
2595 | goto alloc_failed; | |
2596 | } | |
2597 | ||
2598 | rx_ring->next_to_clean = 0; | |
2599 | rx_ring->next_to_use = 0; | |
2600 | ||
2601 | return 0; | |
2602 | alloc_failed: | |
2603 | return -ENOMEM; | |
2604 | } | |
2605 | ||
2606 | /** | |
2607 | * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources | |
2608 | * @adapter: board private structure | |
2609 | * | |
2610 | * If this function returns with an error, then it's possible one or | |
2611 | * more of the rings is populated (while the rest are not). It is the | |
2612 | * callers duty to clean those orphaned rings. | |
2613 | * | |
2614 | * Return 0 on success, negative on failure | |
2615 | **/ | |
2616 | static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter) | |
2617 | { | |
2618 | int i, err = 0; | |
2619 | ||
2620 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2621 | err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
2622 | if (!err) | |
2623 | continue; | |
2624 | hw_dbg(&adapter->hw, | |
2625 | "Allocation for Rx Queue %u failed\n", i); | |
2626 | break; | |
2627 | } | |
2628 | return err; | |
2629 | } | |
2630 | ||
2631 | /** | |
2632 | * ixgbevf_free_rx_resources - Free Rx Resources | |
2633 | * @adapter: board private structure | |
2634 | * @rx_ring: ring to clean the resources from | |
2635 | * | |
2636 | * Free all receive software resources | |
2637 | **/ | |
2638 | void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter, | |
2639 | struct ixgbevf_ring *rx_ring) | |
2640 | { | |
2641 | struct pci_dev *pdev = adapter->pdev; | |
2642 | ||
2643 | ixgbevf_clean_rx_ring(adapter, rx_ring); | |
2644 | ||
2645 | vfree(rx_ring->rx_buffer_info); | |
2646 | rx_ring->rx_buffer_info = NULL; | |
2647 | ||
2648 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2649 | ||
2650 | rx_ring->desc = NULL; | |
2651 | } | |
2652 | ||
2653 | /** | |
2654 | * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues | |
2655 | * @adapter: board private structure | |
2656 | * | |
2657 | * Free all receive software resources | |
2658 | **/ | |
2659 | static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter) | |
2660 | { | |
2661 | int i; | |
2662 | ||
2663 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2664 | if (adapter->rx_ring[i].desc) | |
2665 | ixgbevf_free_rx_resources(adapter, | |
2666 | &adapter->rx_ring[i]); | |
2667 | } | |
2668 | ||
2669 | /** | |
2670 | * ixgbevf_open - Called when a network interface is made active | |
2671 | * @netdev: network interface device structure | |
2672 | * | |
2673 | * Returns 0 on success, negative value on failure | |
2674 | * | |
2675 | * The open entry point is called when a network interface is made | |
2676 | * active by the system (IFF_UP). At this point all resources needed | |
2677 | * for transmit and receive operations are allocated, the interrupt | |
2678 | * handler is registered with the OS, the watchdog timer is started, | |
2679 | * and the stack is notified that the interface is ready. | |
2680 | **/ | |
2681 | static int ixgbevf_open(struct net_device *netdev) | |
2682 | { | |
2683 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2684 | struct ixgbe_hw *hw = &adapter->hw; | |
2685 | int err; | |
2686 | ||
2687 | /* disallow open during test */ | |
2688 | if (test_bit(__IXGBEVF_TESTING, &adapter->state)) | |
2689 | return -EBUSY; | |
2690 | ||
2691 | if (hw->adapter_stopped) { | |
2692 | ixgbevf_reset(adapter); | |
2693 | /* if adapter is still stopped then PF isn't up and | |
2694 | * the vf can't start. */ | |
2695 | if (hw->adapter_stopped) { | |
2696 | err = IXGBE_ERR_MBX; | |
2697 | printk(KERN_ERR "Unable to start - perhaps the PF" | |
29b8dd02 | 2698 | " Driver isn't up yet\n"); |
92915f71 GR |
2699 | goto err_setup_reset; |
2700 | } | |
2701 | } | |
2702 | ||
2703 | /* allocate transmit descriptors */ | |
2704 | err = ixgbevf_setup_all_tx_resources(adapter); | |
2705 | if (err) | |
2706 | goto err_setup_tx; | |
2707 | ||
2708 | /* allocate receive descriptors */ | |
2709 | err = ixgbevf_setup_all_rx_resources(adapter); | |
2710 | if (err) | |
2711 | goto err_setup_rx; | |
2712 | ||
2713 | ixgbevf_configure(adapter); | |
2714 | ||
2715 | /* | |
2716 | * Map the Tx/Rx rings to the vectors we were allotted. | |
2717 | * if request_irq will be called in this function map_rings | |
2718 | * must be called *before* up_complete | |
2719 | */ | |
2720 | ixgbevf_map_rings_to_vectors(adapter); | |
2721 | ||
2722 | err = ixgbevf_up_complete(adapter); | |
2723 | if (err) | |
2724 | goto err_up; | |
2725 | ||
2726 | /* clear any pending interrupts, may auto mask */ | |
2727 | IXGBE_READ_REG(hw, IXGBE_VTEICR); | |
2728 | err = ixgbevf_request_irq(adapter); | |
2729 | if (err) | |
2730 | goto err_req_irq; | |
2731 | ||
2732 | ixgbevf_irq_enable(adapter, true, true); | |
2733 | ||
2734 | return 0; | |
2735 | ||
2736 | err_req_irq: | |
2737 | ixgbevf_down(adapter); | |
2738 | err_up: | |
2739 | ixgbevf_free_irq(adapter); | |
2740 | err_setup_rx: | |
2741 | ixgbevf_free_all_rx_resources(adapter); | |
2742 | err_setup_tx: | |
2743 | ixgbevf_free_all_tx_resources(adapter); | |
2744 | ixgbevf_reset(adapter); | |
2745 | ||
2746 | err_setup_reset: | |
2747 | ||
2748 | return err; | |
2749 | } | |
2750 | ||
2751 | /** | |
2752 | * ixgbevf_close - Disables a network interface | |
2753 | * @netdev: network interface device structure | |
2754 | * | |
2755 | * Returns 0, this is not allowed to fail | |
2756 | * | |
2757 | * The close entry point is called when an interface is de-activated | |
2758 | * by the OS. The hardware is still under the drivers control, but | |
2759 | * needs to be disabled. A global MAC reset is issued to stop the | |
2760 | * hardware, and all transmit and receive resources are freed. | |
2761 | **/ | |
2762 | static int ixgbevf_close(struct net_device *netdev) | |
2763 | { | |
2764 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2765 | ||
2766 | ixgbevf_down(adapter); | |
2767 | ixgbevf_free_irq(adapter); | |
2768 | ||
2769 | ixgbevf_free_all_tx_resources(adapter); | |
2770 | ixgbevf_free_all_rx_resources(adapter); | |
2771 | ||
2772 | return 0; | |
2773 | } | |
2774 | ||
2775 | static int ixgbevf_tso(struct ixgbevf_adapter *adapter, | |
2776 | struct ixgbevf_ring *tx_ring, | |
2777 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
2778 | { | |
2779 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2780 | unsigned int i; | |
2781 | int err; | |
2782 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2783 | u32 vlan_macip_lens = 0, type_tucmd_mlhl; | |
2784 | u32 mss_l4len_idx, l4len; | |
2785 | ||
2786 | if (skb_is_gso(skb)) { | |
2787 | if (skb_header_cloned(skb)) { | |
2788 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2789 | if (err) | |
2790 | return err; | |
2791 | } | |
2792 | l4len = tcp_hdrlen(skb); | |
2793 | *hdr_len += l4len; | |
2794 | ||
2795 | if (skb->protocol == htons(ETH_P_IP)) { | |
2796 | struct iphdr *iph = ip_hdr(skb); | |
2797 | iph->tot_len = 0; | |
2798 | iph->check = 0; | |
2799 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2800 | iph->daddr, 0, | |
2801 | IPPROTO_TCP, | |
2802 | 0); | |
2803 | adapter->hw_tso_ctxt++; | |
9010bc33 | 2804 | } else if (skb_is_gso_v6(skb)) { |
92915f71 GR |
2805 | ipv6_hdr(skb)->payload_len = 0; |
2806 | tcp_hdr(skb)->check = | |
2807 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2808 | &ipv6_hdr(skb)->daddr, | |
2809 | 0, IPPROTO_TCP, 0); | |
2810 | adapter->hw_tso6_ctxt++; | |
2811 | } | |
2812 | ||
2813 | i = tx_ring->next_to_use; | |
2814 | ||
2815 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2816 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2817 | ||
2818 | /* VLAN MACLEN IPLEN */ | |
2819 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2820 | vlan_macip_lens |= | |
2821 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2822 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
2823 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2824 | *hdr_len += skb_network_offset(skb); | |
2825 | vlan_macip_lens |= | |
2826 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2827 | *hdr_len += | |
2828 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2829 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2830 | context_desc->seqnum_seed = 0; | |
2831 | ||
2832 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2833 | type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | | |
2834 | IXGBE_ADVTXD_DTYP_CTXT); | |
2835 | ||
2836 | if (skb->protocol == htons(ETH_P_IP)) | |
2837 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2838 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2839 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2840 | ||
2841 | /* MSS L4LEN IDX */ | |
2842 | mss_l4len_idx = | |
2843 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
2844 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
2845 | /* use index 1 for TSO */ | |
2846 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
2847 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2848 | ||
2849 | tx_buffer_info->time_stamp = jiffies; | |
2850 | tx_buffer_info->next_to_watch = i; | |
2851 | ||
2852 | i++; | |
2853 | if (i == tx_ring->count) | |
2854 | i = 0; | |
2855 | tx_ring->next_to_use = i; | |
2856 | ||
2857 | return true; | |
2858 | } | |
2859 | ||
2860 | return false; | |
2861 | } | |
2862 | ||
2863 | static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter, | |
2864 | struct ixgbevf_ring *tx_ring, | |
2865 | struct sk_buff *skb, u32 tx_flags) | |
2866 | { | |
2867 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2868 | unsigned int i; | |
2869 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2870 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2871 | ||
2872 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
2873 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
2874 | i = tx_ring->next_to_use; | |
2875 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2876 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2877 | ||
2878 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2879 | vlan_macip_lens |= (tx_flags & | |
2880 | IXGBE_TX_FLAGS_VLAN_MASK); | |
2881 | vlan_macip_lens |= (skb_network_offset(skb) << | |
2882 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2883 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2884 | vlan_macip_lens |= (skb_transport_header(skb) - | |
2885 | skb_network_header(skb)); | |
2886 | ||
2887 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2888 | context_desc->seqnum_seed = 0; | |
2889 | ||
2890 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2891 | IXGBE_ADVTXD_DTYP_CTXT); | |
2892 | ||
2893 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2894 | switch (skb->protocol) { | |
2895 | case __constant_htons(ETH_P_IP): | |
2896 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2897 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2898 | type_tucmd_mlhl |= | |
2899 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2900 | break; | |
2901 | case __constant_htons(ETH_P_IPV6): | |
2902 | /* XXX what about other V6 headers?? */ | |
2903 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2904 | type_tucmd_mlhl |= | |
2905 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2906 | break; | |
2907 | default: | |
2908 | if (unlikely(net_ratelimit())) { | |
2909 | printk(KERN_WARNING | |
2910 | "partial checksum but " | |
2911 | "proto=%x!\n", | |
2912 | skb->protocol); | |
2913 | } | |
2914 | break; | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2919 | /* use index zero for tx checksum offload */ | |
2920 | context_desc->mss_l4len_idx = 0; | |
2921 | ||
2922 | tx_buffer_info->time_stamp = jiffies; | |
2923 | tx_buffer_info->next_to_watch = i; | |
2924 | ||
2925 | adapter->hw_csum_tx_good++; | |
2926 | i++; | |
2927 | if (i == tx_ring->count) | |
2928 | i = 0; | |
2929 | tx_ring->next_to_use = i; | |
2930 | ||
2931 | return true; | |
2932 | } | |
2933 | ||
2934 | return false; | |
2935 | } | |
2936 | ||
2937 | static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter, | |
2938 | struct ixgbevf_ring *tx_ring, | |
2939 | struct sk_buff *skb, u32 tx_flags, | |
2940 | unsigned int first) | |
2941 | { | |
2942 | struct pci_dev *pdev = adapter->pdev; | |
2943 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2944 | unsigned int len; | |
2945 | unsigned int total = skb->len; | |
65deeed7 | 2946 | unsigned int offset = 0, size, count = 0; |
92915f71 GR |
2947 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; |
2948 | unsigned int f; | |
65deeed7 | 2949 | int i; |
92915f71 GR |
2950 | |
2951 | i = tx_ring->next_to_use; | |
2952 | ||
2953 | len = min(skb_headlen(skb), total); | |
2954 | while (len) { | |
2955 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2956 | size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD); | |
2957 | ||
2958 | tx_buffer_info->length = size; | |
2959 | tx_buffer_info->mapped_as_page = false; | |
2960 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
2961 | skb->data + offset, | |
2962 | size, PCI_DMA_TODEVICE); | |
2963 | if (pci_dma_mapping_error(pdev, tx_buffer_info->dma)) | |
2964 | goto dma_error; | |
2965 | tx_buffer_info->time_stamp = jiffies; | |
2966 | tx_buffer_info->next_to_watch = i; | |
2967 | ||
2968 | len -= size; | |
2969 | total -= size; | |
2970 | offset += size; | |
2971 | count++; | |
2972 | i++; | |
2973 | if (i == tx_ring->count) | |
2974 | i = 0; | |
2975 | } | |
2976 | ||
2977 | for (f = 0; f < nr_frags; f++) { | |
2978 | struct skb_frag_struct *frag; | |
2979 | ||
2980 | frag = &skb_shinfo(skb)->frags[f]; | |
2981 | len = min((unsigned int)frag->size, total); | |
2982 | offset = frag->page_offset; | |
2983 | ||
2984 | while (len) { | |
2985 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2986 | size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD); | |
2987 | ||
2988 | tx_buffer_info->length = size; | |
2989 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
2990 | frag->page, | |
2991 | offset, | |
2992 | size, | |
2993 | PCI_DMA_TODEVICE); | |
2994 | tx_buffer_info->mapped_as_page = true; | |
2995 | if (pci_dma_mapping_error(pdev, tx_buffer_info->dma)) | |
2996 | goto dma_error; | |
2997 | tx_buffer_info->time_stamp = jiffies; | |
2998 | tx_buffer_info->next_to_watch = i; | |
2999 | ||
3000 | len -= size; | |
3001 | total -= size; | |
3002 | offset += size; | |
3003 | count++; | |
3004 | i++; | |
3005 | if (i == tx_ring->count) | |
3006 | i = 0; | |
3007 | } | |
3008 | if (total == 0) | |
3009 | break; | |
3010 | } | |
3011 | ||
3012 | if (i == 0) | |
3013 | i = tx_ring->count - 1; | |
3014 | else | |
3015 | i = i - 1; | |
3016 | tx_ring->tx_buffer_info[i].skb = skb; | |
3017 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
3018 | ||
3019 | return count; | |
3020 | ||
3021 | dma_error: | |
3022 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
3023 | ||
3024 | /* clear timestamp and dma mappings for failed tx_buffer_info map */ | |
3025 | tx_buffer_info->dma = 0; | |
3026 | tx_buffer_info->time_stamp = 0; | |
3027 | tx_buffer_info->next_to_watch = 0; | |
3028 | count--; | |
3029 | ||
3030 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
3031 | while (count >= 0) { | |
3032 | count--; | |
3033 | i--; | |
3034 | if (i < 0) | |
3035 | i += tx_ring->count; | |
3036 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3037 | ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
3038 | } | |
3039 | ||
3040 | return count; | |
3041 | } | |
3042 | ||
3043 | static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter, | |
3044 | struct ixgbevf_ring *tx_ring, int tx_flags, | |
3045 | int count, u32 paylen, u8 hdr_len) | |
3046 | { | |
3047 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
3048 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
3049 | u32 olinfo_status = 0, cmd_type_len = 0; | |
3050 | unsigned int i; | |
3051 | ||
3052 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
3053 | ||
3054 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
3055 | ||
3056 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
3057 | ||
3058 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3059 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
3060 | ||
3061 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
3062 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
3063 | ||
3064 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3065 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3066 | ||
3067 | /* use index 1 context for tso */ | |
3068 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
3069 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
3070 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
3071 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3072 | ||
3073 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
3074 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3075 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3076 | ||
3077 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
3078 | ||
3079 | i = tx_ring->next_to_use; | |
3080 | while (count--) { | |
3081 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3082 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
3083 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
3084 | tx_desc->read.cmd_type_len = | |
3085 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
3086 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
3087 | i++; | |
3088 | if (i == tx_ring->count) | |
3089 | i = 0; | |
3090 | } | |
3091 | ||
3092 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
3093 | ||
3094 | /* | |
3095 | * Force memory writes to complete before letting h/w | |
3096 | * know there are new descriptors to fetch. (Only | |
3097 | * applicable for weak-ordered memory model archs, | |
3098 | * such as IA-64). | |
3099 | */ | |
3100 | wmb(); | |
3101 | ||
3102 | tx_ring->next_to_use = i; | |
3103 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3104 | } | |
3105 | ||
3106 | static int __ixgbevf_maybe_stop_tx(struct net_device *netdev, | |
3107 | struct ixgbevf_ring *tx_ring, int size) | |
3108 | { | |
3109 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3110 | ||
3111 | netif_stop_subqueue(netdev, tx_ring->queue_index); | |
3112 | /* Herbert's original patch had: | |
3113 | * smp_mb__after_netif_stop_queue(); | |
3114 | * but since that doesn't exist yet, just open code it. */ | |
3115 | smp_mb(); | |
3116 | ||
3117 | /* We need to check again in a case another CPU has just | |
3118 | * made room available. */ | |
3119 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
3120 | return -EBUSY; | |
3121 | ||
3122 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
3123 | netif_start_subqueue(netdev, tx_ring->queue_index); | |
3124 | ++adapter->restart_queue; | |
3125 | return 0; | |
3126 | } | |
3127 | ||
3128 | static int ixgbevf_maybe_stop_tx(struct net_device *netdev, | |
3129 | struct ixgbevf_ring *tx_ring, int size) | |
3130 | { | |
3131 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
3132 | return 0; | |
3133 | return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size); | |
3134 | } | |
3135 | ||
3136 | static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3137 | { | |
3138 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3139 | struct ixgbevf_ring *tx_ring; | |
3140 | unsigned int first; | |
3141 | unsigned int tx_flags = 0; | |
3142 | u8 hdr_len = 0; | |
3143 | int r_idx = 0, tso; | |
3144 | int count = 0; | |
3145 | ||
3146 | unsigned int f; | |
3147 | ||
3148 | tx_ring = &adapter->tx_ring[r_idx]; | |
3149 | ||
3150 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
3151 | tx_flags |= vlan_tx_tag_get(skb); | |
3152 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; | |
3153 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
3154 | } | |
3155 | ||
3156 | /* four things can cause us to need a context descriptor */ | |
3157 | if (skb_is_gso(skb) || | |
3158 | (skb->ip_summed == CHECKSUM_PARTIAL) || | |
3159 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) | |
3160 | count++; | |
3161 | ||
3162 | count += TXD_USE_COUNT(skb_headlen(skb)); | |
3163 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) | |
3164 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
3165 | ||
3166 | if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) { | |
3167 | adapter->tx_busy++; | |
3168 | return NETDEV_TX_BUSY; | |
3169 | } | |
3170 | ||
3171 | first = tx_ring->next_to_use; | |
3172 | ||
3173 | if (skb->protocol == htons(ETH_P_IP)) | |
3174 | tx_flags |= IXGBE_TX_FLAGS_IPV4; | |
3175 | tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
3176 | if (tso < 0) { | |
3177 | dev_kfree_skb_any(skb); | |
3178 | return NETDEV_TX_OK; | |
3179 | } | |
3180 | ||
3181 | if (tso) | |
3182 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
3183 | else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
3184 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
3185 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
3186 | ||
3187 | ixgbevf_tx_queue(adapter, tx_ring, tx_flags, | |
3188 | ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first), | |
3189 | skb->len, hdr_len); | |
3190 | ||
3191 | netdev->trans_start = jiffies; | |
3192 | ||
3193 | ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); | |
3194 | ||
3195 | return NETDEV_TX_OK; | |
3196 | } | |
3197 | ||
3198 | /** | |
3199 | * ixgbevf_get_stats - Get System Network Statistics | |
3200 | * @netdev: network interface device structure | |
3201 | * | |
3202 | * Returns the address of the device statistics structure. | |
3203 | * The statistics are actually updated from the timer callback. | |
3204 | **/ | |
3205 | static struct net_device_stats *ixgbevf_get_stats(struct net_device *netdev) | |
3206 | { | |
3207 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3208 | ||
3209 | /* only return the current stats */ | |
3210 | return &adapter->net_stats; | |
3211 | } | |
3212 | ||
3213 | /** | |
3214 | * ixgbevf_set_mac - Change the Ethernet Address of the NIC | |
3215 | * @netdev: network interface device structure | |
3216 | * @p: pointer to an address structure | |
3217 | * | |
3218 | * Returns 0 on success, negative on failure | |
3219 | **/ | |
3220 | static int ixgbevf_set_mac(struct net_device *netdev, void *p) | |
3221 | { | |
3222 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3223 | struct ixgbe_hw *hw = &adapter->hw; | |
3224 | struct sockaddr *addr = p; | |
3225 | ||
3226 | if (!is_valid_ether_addr(addr->sa_data)) | |
3227 | return -EADDRNOTAVAIL; | |
3228 | ||
3229 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3230 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
3231 | ||
3232 | if (hw->mac.ops.set_rar) | |
3233 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0); | |
3234 | ||
3235 | return 0; | |
3236 | } | |
3237 | ||
3238 | /** | |
3239 | * ixgbevf_change_mtu - Change the Maximum Transfer Unit | |
3240 | * @netdev: network interface device structure | |
3241 | * @new_mtu: new value for maximum frame size | |
3242 | * | |
3243 | * Returns 0 on success, negative on failure | |
3244 | **/ | |
3245 | static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) | |
3246 | { | |
3247 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3248 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3249 | ||
3250 | /* MTU < 68 is an error and causes problems on some kernels */ | |
3251 | if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE)) | |
3252 | return -EINVAL; | |
3253 | ||
3254 | hw_dbg(&adapter->hw, "changing MTU from %d to %d\n", | |
3255 | netdev->mtu, new_mtu); | |
3256 | /* must set new MTU before calling down or up */ | |
3257 | netdev->mtu = new_mtu; | |
3258 | ||
3259 | if (netif_running(netdev)) | |
3260 | ixgbevf_reinit_locked(adapter); | |
3261 | ||
3262 | return 0; | |
3263 | } | |
3264 | ||
3265 | static void ixgbevf_shutdown(struct pci_dev *pdev) | |
3266 | { | |
3267 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3268 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3269 | ||
3270 | netif_device_detach(netdev); | |
3271 | ||
3272 | if (netif_running(netdev)) { | |
3273 | ixgbevf_down(adapter); | |
3274 | ixgbevf_free_irq(adapter); | |
3275 | ixgbevf_free_all_tx_resources(adapter); | |
3276 | ixgbevf_free_all_rx_resources(adapter); | |
3277 | } | |
3278 | ||
3279 | #ifdef CONFIG_PM | |
3280 | pci_save_state(pdev); | |
3281 | #endif | |
3282 | ||
3283 | pci_disable_device(pdev); | |
3284 | } | |
3285 | ||
92915f71 GR |
3286 | static const struct net_device_ops ixgbe_netdev_ops = { |
3287 | .ndo_open = &ixgbevf_open, | |
3288 | .ndo_stop = &ixgbevf_close, | |
3289 | .ndo_start_xmit = &ixgbevf_xmit_frame, | |
3290 | .ndo_get_stats = &ixgbevf_get_stats, | |
3291 | .ndo_set_rx_mode = &ixgbevf_set_rx_mode, | |
3292 | .ndo_set_multicast_list = &ixgbevf_set_rx_mode, | |
3293 | .ndo_validate_addr = eth_validate_addr, | |
3294 | .ndo_set_mac_address = &ixgbevf_set_mac, | |
3295 | .ndo_change_mtu = &ixgbevf_change_mtu, | |
3296 | .ndo_tx_timeout = &ixgbevf_tx_timeout, | |
3297 | .ndo_vlan_rx_register = &ixgbevf_vlan_rx_register, | |
3298 | .ndo_vlan_rx_add_vid = &ixgbevf_vlan_rx_add_vid, | |
3299 | .ndo_vlan_rx_kill_vid = &ixgbevf_vlan_rx_kill_vid, | |
3300 | }; | |
92915f71 GR |
3301 | |
3302 | static void ixgbevf_assign_netdev_ops(struct net_device *dev) | |
3303 | { | |
3304 | struct ixgbevf_adapter *adapter; | |
3305 | adapter = netdev_priv(dev); | |
92915f71 | 3306 | dev->netdev_ops = &ixgbe_netdev_ops; |
92915f71 GR |
3307 | ixgbevf_set_ethtool_ops(dev); |
3308 | dev->watchdog_timeo = 5 * HZ; | |
3309 | } | |
3310 | ||
3311 | /** | |
3312 | * ixgbevf_probe - Device Initialization Routine | |
3313 | * @pdev: PCI device information struct | |
3314 | * @ent: entry in ixgbevf_pci_tbl | |
3315 | * | |
3316 | * Returns 0 on success, negative on failure | |
3317 | * | |
3318 | * ixgbevf_probe initializes an adapter identified by a pci_dev structure. | |
3319 | * The OS initialization, configuring of the adapter private structure, | |
3320 | * and a hardware reset occur. | |
3321 | **/ | |
3322 | static int __devinit ixgbevf_probe(struct pci_dev *pdev, | |
3323 | const struct pci_device_id *ent) | |
3324 | { | |
3325 | struct net_device *netdev; | |
3326 | struct ixgbevf_adapter *adapter = NULL; | |
3327 | struct ixgbe_hw *hw = NULL; | |
3328 | const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data]; | |
3329 | static int cards_found; | |
3330 | int err, pci_using_dac; | |
3331 | ||
3332 | err = pci_enable_device(pdev); | |
3333 | if (err) | |
3334 | return err; | |
3335 | ||
3336 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && | |
3337 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
3338 | pci_using_dac = 1; | |
3339 | } else { | |
3340 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3341 | if (err) { | |
3342 | err = pci_set_consistent_dma_mask(pdev, | |
3343 | DMA_BIT_MASK(32)); | |
3344 | if (err) { | |
3345 | dev_err(&pdev->dev, "No usable DMA " | |
3346 | "configuration, aborting\n"); | |
3347 | goto err_dma; | |
3348 | } | |
3349 | } | |
3350 | pci_using_dac = 0; | |
3351 | } | |
3352 | ||
3353 | err = pci_request_regions(pdev, ixgbevf_driver_name); | |
3354 | if (err) { | |
3355 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
3356 | goto err_pci_reg; | |
3357 | } | |
3358 | ||
3359 | pci_set_master(pdev); | |
3360 | ||
3361 | #ifdef HAVE_TX_MQ | |
3362 | netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter), | |
3363 | MAX_TX_QUEUES); | |
3364 | #else | |
3365 | netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter)); | |
3366 | #endif | |
3367 | if (!netdev) { | |
3368 | err = -ENOMEM; | |
3369 | goto err_alloc_etherdev; | |
3370 | } | |
3371 | ||
3372 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
3373 | ||
3374 | pci_set_drvdata(pdev, netdev); | |
3375 | adapter = netdev_priv(netdev); | |
3376 | ||
3377 | adapter->netdev = netdev; | |
3378 | adapter->pdev = pdev; | |
3379 | hw = &adapter->hw; | |
3380 | hw->back = adapter; | |
3381 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
3382 | ||
3383 | /* | |
3384 | * call save state here in standalone driver because it relies on | |
3385 | * adapter struct to exist, and needs to call netdev_priv | |
3386 | */ | |
3387 | pci_save_state(pdev); | |
3388 | ||
3389 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
3390 | pci_resource_len(pdev, 0)); | |
3391 | if (!hw->hw_addr) { | |
3392 | err = -EIO; | |
3393 | goto err_ioremap; | |
3394 | } | |
3395 | ||
3396 | ixgbevf_assign_netdev_ops(netdev); | |
3397 | ||
3398 | adapter->bd_number = cards_found; | |
3399 | ||
3400 | /* Setup hw api */ | |
3401 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
3402 | hw->mac.type = ii->mac; | |
3403 | ||
3404 | memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops, | |
3405 | sizeof(struct ixgbe_mac_operations)); | |
3406 | ||
3407 | adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE; | |
3408 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
3409 | adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE; | |
3410 | ||
3411 | /* setup the private structure */ | |
3412 | err = ixgbevf_sw_init(adapter); | |
3413 | ||
92915f71 GR |
3414 | #ifdef MAX_SKB_FRAGS |
3415 | netdev->features = NETIF_F_SG | | |
3416 | NETIF_F_IP_CSUM | | |
3417 | NETIF_F_HW_VLAN_TX | | |
3418 | NETIF_F_HW_VLAN_RX | | |
3419 | NETIF_F_HW_VLAN_FILTER; | |
3420 | ||
3421 | netdev->features |= NETIF_F_IPV6_CSUM; | |
3422 | netdev->features |= NETIF_F_TSO; | |
3423 | netdev->features |= NETIF_F_TSO6; | |
3424 | netdev->vlan_features |= NETIF_F_TSO; | |
3425 | netdev->vlan_features |= NETIF_F_TSO6; | |
3426 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
3427 | netdev->vlan_features |= NETIF_F_SG; | |
3428 | ||
3429 | if (pci_using_dac) | |
3430 | netdev->features |= NETIF_F_HIGHDMA; | |
3431 | ||
3432 | #endif /* MAX_SKB_FRAGS */ | |
3433 | ||
3434 | /* The HW MAC address was set and/or determined in sw_init */ | |
3435 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
3436 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
3437 | ||
3438 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
3439 | printk(KERN_ERR "invalid MAC address\n"); | |
3440 | err = -EIO; | |
3441 | goto err_sw_init; | |
3442 | } | |
3443 | ||
3444 | init_timer(&adapter->watchdog_timer); | |
3445 | adapter->watchdog_timer.function = &ixgbevf_watchdog; | |
3446 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
3447 | ||
3448 | INIT_WORK(&adapter->reset_task, ixgbevf_reset_task); | |
3449 | INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task); | |
3450 | ||
3451 | err = ixgbevf_init_interrupt_scheme(adapter); | |
3452 | if (err) | |
3453 | goto err_sw_init; | |
3454 | ||
3455 | /* pick up the PCI bus settings for reporting later */ | |
3456 | if (hw->mac.ops.get_bus_info) | |
3457 | hw->mac.ops.get_bus_info(hw); | |
3458 | ||
3459 | ||
3460 | netif_carrier_off(netdev); | |
3461 | netif_tx_stop_all_queues(netdev); | |
3462 | ||
3463 | strcpy(netdev->name, "eth%d"); | |
3464 | ||
3465 | err = register_netdev(netdev); | |
3466 | if (err) | |
3467 | goto err_register; | |
3468 | ||
3469 | adapter->netdev_registered = true; | |
3470 | ||
33bd9f60 GR |
3471 | ixgbevf_init_last_counter_stats(adapter); |
3472 | ||
92915f71 GR |
3473 | /* print the MAC address */ |
3474 | hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", | |
3475 | netdev->dev_addr[0], | |
3476 | netdev->dev_addr[1], | |
3477 | netdev->dev_addr[2], | |
3478 | netdev->dev_addr[3], | |
3479 | netdev->dev_addr[4], | |
3480 | netdev->dev_addr[5]); | |
3481 | ||
3482 | hw_dbg(hw, "MAC: %d\n", hw->mac.type); | |
3483 | ||
3484 | hw_dbg(hw, "LRO is disabled \n"); | |
3485 | ||
3486 | hw_dbg(hw, "Intel(R) 82599 Virtual Function\n"); | |
3487 | cards_found++; | |
3488 | return 0; | |
3489 | ||
3490 | err_register: | |
3491 | err_sw_init: | |
3492 | ixgbevf_reset_interrupt_capability(adapter); | |
3493 | iounmap(hw->hw_addr); | |
3494 | err_ioremap: | |
3495 | free_netdev(netdev); | |
3496 | err_alloc_etherdev: | |
3497 | pci_release_regions(pdev); | |
3498 | err_pci_reg: | |
3499 | err_dma: | |
3500 | pci_disable_device(pdev); | |
3501 | return err; | |
3502 | } | |
3503 | ||
3504 | /** | |
3505 | * ixgbevf_remove - Device Removal Routine | |
3506 | * @pdev: PCI device information struct | |
3507 | * | |
3508 | * ixgbevf_remove is called by the PCI subsystem to alert the driver | |
3509 | * that it should release a PCI device. The could be caused by a | |
3510 | * Hot-Plug event, or because the driver is going to be removed from | |
3511 | * memory. | |
3512 | **/ | |
3513 | static void __devexit ixgbevf_remove(struct pci_dev *pdev) | |
3514 | { | |
3515 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3516 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3517 | ||
3518 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
3519 | ||
3520 | del_timer_sync(&adapter->watchdog_timer); | |
3521 | ||
3522 | cancel_work_sync(&adapter->watchdog_task); | |
3523 | ||
3524 | flush_scheduled_work(); | |
3525 | ||
3526 | if (adapter->netdev_registered) { | |
3527 | unregister_netdev(netdev); | |
3528 | adapter->netdev_registered = false; | |
3529 | } | |
3530 | ||
3531 | ixgbevf_reset_interrupt_capability(adapter); | |
3532 | ||
3533 | iounmap(adapter->hw.hw_addr); | |
3534 | pci_release_regions(pdev); | |
3535 | ||
3536 | hw_dbg(&adapter->hw, "Remove complete\n"); | |
3537 | ||
3538 | kfree(adapter->tx_ring); | |
3539 | kfree(adapter->rx_ring); | |
3540 | ||
3541 | free_netdev(netdev); | |
3542 | ||
3543 | pci_disable_device(pdev); | |
3544 | } | |
3545 | ||
3546 | static struct pci_driver ixgbevf_driver = { | |
3547 | .name = ixgbevf_driver_name, | |
3548 | .id_table = ixgbevf_pci_tbl, | |
3549 | .probe = ixgbevf_probe, | |
3550 | .remove = __devexit_p(ixgbevf_remove), | |
3551 | .shutdown = ixgbevf_shutdown, | |
3552 | }; | |
3553 | ||
3554 | /** | |
3555 | * ixgbe_init_module - Driver Registration Routine | |
3556 | * | |
3557 | * ixgbe_init_module is the first routine called when the driver is | |
3558 | * loaded. All it does is register with the PCI subsystem. | |
3559 | **/ | |
3560 | static int __init ixgbevf_init_module(void) | |
3561 | { | |
3562 | int ret; | |
3563 | printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string, | |
3564 | ixgbevf_driver_version); | |
3565 | ||
3566 | printk(KERN_INFO "%s\n", ixgbevf_copyright); | |
3567 | ||
3568 | ret = pci_register_driver(&ixgbevf_driver); | |
3569 | return ret; | |
3570 | } | |
3571 | ||
3572 | module_init(ixgbevf_init_module); | |
3573 | ||
3574 | /** | |
3575 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
3576 | * | |
3577 | * ixgbe_exit_module is called just before the driver is removed | |
3578 | * from memory. | |
3579 | **/ | |
3580 | static void __exit ixgbevf_exit_module(void) | |
3581 | { | |
3582 | pci_unregister_driver(&ixgbevf_driver); | |
3583 | } | |
3584 | ||
3585 | #ifdef DEBUG | |
3586 | /** | |
3587 | * ixgbe_get_hw_dev_name - return device name string | |
3588 | * used by hardware layer to print debugging information | |
3589 | **/ | |
3590 | char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw) | |
3591 | { | |
3592 | struct ixgbevf_adapter *adapter = hw->back; | |
3593 | return adapter->netdev->name; | |
3594 | } | |
3595 | ||
3596 | #endif | |
3597 | module_exit(ixgbevf_exit_module); | |
3598 | ||
3599 | /* ixgbevf_main.c */ |