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d1a890fa SB |
1 | /* |
2 | * Linux driver for VMware's vmxnet3 ethernet NIC. | |
3 | * | |
4 | * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; version 2 of the License and no later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more | |
14 | * details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution in | |
21 | * the file called "COPYING". | |
22 | * | |
23 | * Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com> | |
24 | * | |
25 | */ | |
26 | ||
27 | #include "vmxnet3_int.h" | |
28 | ||
29 | char vmxnet3_driver_name[] = "vmxnet3"; | |
30 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
31 | ||
32 | ||
33 | /* | |
34 | * PCI Device ID Table | |
35 | * Last entry must be all 0s | |
36 | */ | |
37 | static const struct pci_device_id vmxnet3_pciid_table[] = { | |
38 | {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)}, | |
39 | {0} | |
40 | }; | |
41 | ||
42 | MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table); | |
43 | ||
44 | static atomic_t devices_found; | |
45 | ||
46 | ||
47 | /* | |
48 | * Enable/Disable the given intr | |
49 | */ | |
50 | static void | |
51 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
52 | { | |
53 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
54 | } | |
55 | ||
56 | ||
57 | static void | |
58 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
59 | { | |
60 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
61 | } | |
62 | ||
63 | ||
64 | /* | |
65 | * Enable/Disable all intrs used by the device | |
66 | */ | |
67 | static void | |
68 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
69 | { | |
70 | int i; | |
71 | ||
72 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
73 | vmxnet3_enable_intr(adapter, i); | |
74 | } | |
75 | ||
76 | ||
77 | static void | |
78 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
79 | { | |
80 | int i; | |
81 | ||
82 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
83 | vmxnet3_disable_intr(adapter, i); | |
84 | } | |
85 | ||
86 | ||
87 | static void | |
88 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
89 | { | |
90 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
91 | } | |
92 | ||
93 | ||
94 | static bool | |
95 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
96 | { | |
97 | return netif_queue_stopped(adapter->netdev); | |
98 | } | |
99 | ||
100 | ||
101 | static void | |
102 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
103 | { | |
104 | tq->stopped = false; | |
105 | netif_start_queue(adapter->netdev); | |
106 | } | |
107 | ||
108 | ||
109 | static void | |
110 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
111 | { | |
112 | tq->stopped = false; | |
113 | netif_wake_queue(adapter->netdev); | |
114 | } | |
115 | ||
116 | ||
117 | static void | |
118 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
119 | { | |
120 | tq->stopped = true; | |
121 | tq->num_stop++; | |
122 | netif_stop_queue(adapter->netdev); | |
123 | } | |
124 | ||
125 | ||
126 | /* | |
127 | * Check the link state. This may start or stop the tx queue. | |
128 | */ | |
129 | static void | |
130 | vmxnet3_check_link(struct vmxnet3_adapter *adapter) | |
131 | { | |
132 | u32 ret; | |
133 | ||
134 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); | |
135 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
136 | adapter->link_speed = ret >> 16; | |
137 | if (ret & 1) { /* Link is up. */ | |
138 | printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n", | |
139 | adapter->netdev->name, adapter->link_speed); | |
140 | if (!netif_carrier_ok(adapter->netdev)) | |
141 | netif_carrier_on(adapter->netdev); | |
142 | ||
143 | vmxnet3_tq_start(&adapter->tx_queue, adapter); | |
144 | } else { | |
145 | printk(KERN_INFO "%s: NIC Link is Down\n", | |
146 | adapter->netdev->name); | |
147 | if (netif_carrier_ok(adapter->netdev)) | |
148 | netif_carrier_off(adapter->netdev); | |
149 | ||
150 | vmxnet3_tq_stop(&adapter->tx_queue, adapter); | |
151 | } | |
152 | } | |
153 | ||
154 | ||
155 | static void | |
156 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
157 | { | |
158 | u32 events = adapter->shared->ecr; | |
159 | if (!events) | |
160 | return; | |
161 | ||
162 | vmxnet3_ack_events(adapter, events); | |
163 | ||
164 | /* Check if link state has changed */ | |
165 | if (events & VMXNET3_ECR_LINK) | |
166 | vmxnet3_check_link(adapter); | |
167 | ||
168 | /* Check if there is an error on xmit/recv queues */ | |
169 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
170 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
171 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
172 | ||
173 | if (adapter->tqd_start->status.stopped) { | |
174 | printk(KERN_ERR "%s: tq error 0x%x\n", | |
175 | adapter->netdev->name, | |
176 | adapter->tqd_start->status.error); | |
177 | } | |
178 | if (adapter->rqd_start->status.stopped) { | |
179 | printk(KERN_ERR "%s: rq error 0x%x\n", | |
180 | adapter->netdev->name, | |
181 | adapter->rqd_start->status.error); | |
182 | } | |
183 | ||
184 | schedule_work(&adapter->work); | |
185 | } | |
186 | } | |
187 | ||
188 | ||
189 | static void | |
190 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
191 | struct pci_dev *pdev) | |
192 | { | |
193 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
194 | pci_unmap_single(pdev, tbi->dma_addr, tbi->len, | |
195 | PCI_DMA_TODEVICE); | |
196 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
197 | pci_unmap_page(pdev, tbi->dma_addr, tbi->len, | |
198 | PCI_DMA_TODEVICE); | |
199 | else | |
200 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
201 | ||
202 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
203 | } | |
204 | ||
205 | ||
206 | static int | |
207 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
208 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
209 | { | |
210 | struct sk_buff *skb; | |
211 | int entries = 0; | |
212 | ||
213 | /* no out of order completion */ | |
214 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
215 | BUG_ON(tq->tx_ring.base[eop_idx].txd.eop != 1); | |
216 | ||
217 | skb = tq->buf_info[eop_idx].skb; | |
218 | BUG_ON(skb == NULL); | |
219 | tq->buf_info[eop_idx].skb = NULL; | |
220 | ||
221 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
222 | ||
223 | while (tq->tx_ring.next2comp != eop_idx) { | |
224 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
225 | pdev); | |
226 | ||
227 | /* update next2comp w/o tx_lock. Since we are marking more, | |
228 | * instead of less, tx ring entries avail, the worst case is | |
229 | * that the tx routine incorrectly re-queues a pkt due to | |
230 | * insufficient tx ring entries. | |
231 | */ | |
232 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
233 | entries++; | |
234 | } | |
235 | ||
236 | dev_kfree_skb_any(skb); | |
237 | return entries; | |
238 | } | |
239 | ||
240 | ||
241 | static int | |
242 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
243 | struct vmxnet3_adapter *adapter) | |
244 | { | |
245 | int completed = 0; | |
246 | union Vmxnet3_GenericDesc *gdesc; | |
247 | ||
248 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
249 | while (gdesc->tcd.gen == tq->comp_ring.gen) { | |
250 | completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq, | |
251 | adapter->pdev, adapter); | |
252 | ||
253 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
254 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
255 | } | |
256 | ||
257 | if (completed) { | |
258 | spin_lock(&tq->tx_lock); | |
259 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
260 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
261 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
262 | netif_carrier_ok(adapter->netdev))) { | |
263 | vmxnet3_tq_wake(tq, adapter); | |
264 | } | |
265 | spin_unlock(&tq->tx_lock); | |
266 | } | |
267 | return completed; | |
268 | } | |
269 | ||
270 | ||
271 | static void | |
272 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
273 | struct vmxnet3_adapter *adapter) | |
274 | { | |
275 | int i; | |
276 | ||
277 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
278 | struct vmxnet3_tx_buf_info *tbi; | |
279 | union Vmxnet3_GenericDesc *gdesc; | |
280 | ||
281 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
282 | gdesc = tq->tx_ring.base + tq->tx_ring.next2comp; | |
283 | ||
284 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
285 | if (tbi->skb) { | |
286 | dev_kfree_skb_any(tbi->skb); | |
287 | tbi->skb = NULL; | |
288 | } | |
289 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
290 | } | |
291 | ||
292 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
293 | for (i = 0; i < tq->tx_ring.size; i++) { | |
294 | BUG_ON(tq->buf_info[i].skb != NULL || | |
295 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
296 | } | |
297 | ||
298 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
299 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
300 | ||
301 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
302 | tq->comp_ring.next2proc = 0; | |
303 | } | |
304 | ||
305 | ||
306 | void | |
307 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, | |
308 | struct vmxnet3_adapter *adapter) | |
309 | { | |
310 | if (tq->tx_ring.base) { | |
311 | pci_free_consistent(adapter->pdev, tq->tx_ring.size * | |
312 | sizeof(struct Vmxnet3_TxDesc), | |
313 | tq->tx_ring.base, tq->tx_ring.basePA); | |
314 | tq->tx_ring.base = NULL; | |
315 | } | |
316 | if (tq->data_ring.base) { | |
317 | pci_free_consistent(adapter->pdev, tq->data_ring.size * | |
318 | sizeof(struct Vmxnet3_TxDataDesc), | |
319 | tq->data_ring.base, tq->data_ring.basePA); | |
320 | tq->data_ring.base = NULL; | |
321 | } | |
322 | if (tq->comp_ring.base) { | |
323 | pci_free_consistent(adapter->pdev, tq->comp_ring.size * | |
324 | sizeof(struct Vmxnet3_TxCompDesc), | |
325 | tq->comp_ring.base, tq->comp_ring.basePA); | |
326 | tq->comp_ring.base = NULL; | |
327 | } | |
328 | kfree(tq->buf_info); | |
329 | tq->buf_info = NULL; | |
330 | } | |
331 | ||
332 | ||
333 | static void | |
334 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
335 | struct vmxnet3_adapter *adapter) | |
336 | { | |
337 | int i; | |
338 | ||
339 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
340 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
341 | sizeof(struct Vmxnet3_TxDesc)); | |
342 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
343 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
344 | ||
345 | memset(tq->data_ring.base, 0, tq->data_ring.size * | |
346 | sizeof(struct Vmxnet3_TxDataDesc)); | |
347 | ||
348 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
349 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
350 | sizeof(struct Vmxnet3_TxCompDesc)); | |
351 | tq->comp_ring.next2proc = 0; | |
352 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
353 | ||
354 | /* reset the bookkeeping data */ | |
355 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
356 | for (i = 0; i < tq->tx_ring.size; i++) | |
357 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
358 | ||
359 | /* stats are not reset */ | |
360 | } | |
361 | ||
362 | ||
363 | static int | |
364 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
365 | struct vmxnet3_adapter *adapter) | |
366 | { | |
367 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || | |
368 | tq->comp_ring.base || tq->buf_info); | |
369 | ||
370 | tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size | |
371 | * sizeof(struct Vmxnet3_TxDesc), | |
372 | &tq->tx_ring.basePA); | |
373 | if (!tq->tx_ring.base) { | |
374 | printk(KERN_ERR "%s: failed to allocate tx ring\n", | |
375 | adapter->netdev->name); | |
376 | goto err; | |
377 | } | |
378 | ||
379 | tq->data_ring.base = pci_alloc_consistent(adapter->pdev, | |
380 | tq->data_ring.size * | |
381 | sizeof(struct Vmxnet3_TxDataDesc), | |
382 | &tq->data_ring.basePA); | |
383 | if (!tq->data_ring.base) { | |
384 | printk(KERN_ERR "%s: failed to allocate data ring\n", | |
385 | adapter->netdev->name); | |
386 | goto err; | |
387 | } | |
388 | ||
389 | tq->comp_ring.base = pci_alloc_consistent(adapter->pdev, | |
390 | tq->comp_ring.size * | |
391 | sizeof(struct Vmxnet3_TxCompDesc), | |
392 | &tq->comp_ring.basePA); | |
393 | if (!tq->comp_ring.base) { | |
394 | printk(KERN_ERR "%s: failed to allocate tx comp ring\n", | |
395 | adapter->netdev->name); | |
396 | goto err; | |
397 | } | |
398 | ||
399 | tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]), | |
400 | GFP_KERNEL); | |
401 | if (!tq->buf_info) { | |
402 | printk(KERN_ERR "%s: failed to allocate tx bufinfo\n", | |
403 | adapter->netdev->name); | |
404 | goto err; | |
405 | } | |
406 | ||
407 | return 0; | |
408 | ||
409 | err: | |
410 | vmxnet3_tq_destroy(tq, adapter); | |
411 | return -ENOMEM; | |
412 | } | |
413 | ||
414 | ||
415 | /* | |
416 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
417 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
418 | * are allocated or allocation fails | |
419 | */ | |
420 | ||
421 | static int | |
422 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
423 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
424 | { | |
425 | int num_allocated = 0; | |
426 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
427 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
428 | u32 val; | |
429 | ||
430 | while (num_allocated < num_to_alloc) { | |
431 | struct vmxnet3_rx_buf_info *rbi; | |
432 | union Vmxnet3_GenericDesc *gd; | |
433 | ||
434 | rbi = rbi_base + ring->next2fill; | |
435 | gd = ring->base + ring->next2fill; | |
436 | ||
437 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
438 | if (rbi->skb == NULL) { | |
439 | rbi->skb = dev_alloc_skb(rbi->len + | |
440 | NET_IP_ALIGN); | |
441 | if (unlikely(rbi->skb == NULL)) { | |
442 | rq->stats.rx_buf_alloc_failure++; | |
443 | break; | |
444 | } | |
445 | rbi->skb->dev = adapter->netdev; | |
446 | ||
447 | skb_reserve(rbi->skb, NET_IP_ALIGN); | |
448 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
449 | rbi->skb->data, rbi->len, | |
450 | PCI_DMA_FROMDEVICE); | |
451 | } else { | |
452 | /* rx buffer skipped by the device */ | |
453 | } | |
454 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
455 | } else { | |
456 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
457 | rbi->len != PAGE_SIZE); | |
458 | ||
459 | if (rbi->page == NULL) { | |
460 | rbi->page = alloc_page(GFP_ATOMIC); | |
461 | if (unlikely(rbi->page == NULL)) { | |
462 | rq->stats.rx_buf_alloc_failure++; | |
463 | break; | |
464 | } | |
465 | rbi->dma_addr = pci_map_page(adapter->pdev, | |
466 | rbi->page, 0, PAGE_SIZE, | |
467 | PCI_DMA_FROMDEVICE); | |
468 | } else { | |
469 | /* rx buffers skipped by the device */ | |
470 | } | |
471 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
472 | } | |
473 | ||
474 | BUG_ON(rbi->dma_addr == 0); | |
475 | gd->rxd.addr = rbi->dma_addr; | |
476 | gd->dword[2] = (ring->gen << VMXNET3_RXD_GEN_SHIFT) | val | | |
477 | rbi->len; | |
478 | ||
479 | num_allocated++; | |
480 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
481 | } | |
482 | rq->uncommitted[ring_idx] += num_allocated; | |
483 | ||
484 | dprintk(KERN_ERR "alloc_rx_buf: %d allocated, next2fill %u, next2comp " | |
485 | "%u, uncommited %u\n", num_allocated, ring->next2fill, | |
486 | ring->next2comp, rq->uncommitted[ring_idx]); | |
487 | ||
488 | /* so that the device can distinguish a full ring and an empty ring */ | |
489 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
490 | ||
491 | return num_allocated; | |
492 | } | |
493 | ||
494 | ||
495 | static void | |
496 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
497 | struct vmxnet3_rx_buf_info *rbi) | |
498 | { | |
499 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
500 | skb_shinfo(skb)->nr_frags; | |
501 | ||
502 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
503 | ||
504 | frag->page = rbi->page; | |
505 | frag->page_offset = 0; | |
506 | frag->size = rcd->len; | |
507 | skb->data_len += frag->size; | |
508 | skb_shinfo(skb)->nr_frags++; | |
509 | } | |
510 | ||
511 | ||
512 | static void | |
513 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
514 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
515 | struct vmxnet3_adapter *adapter) | |
516 | { | |
517 | u32 dw2, len; | |
518 | unsigned long buf_offset; | |
519 | int i; | |
520 | union Vmxnet3_GenericDesc *gdesc; | |
521 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
522 | ||
523 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
524 | ||
525 | /* use the previous gen bit for the SOP desc */ | |
526 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
527 | ||
528 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
529 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
530 | ||
531 | /* no need to map the buffer if headers are copied */ | |
532 | if (ctx->copy_size) { | |
533 | ctx->sop_txd->txd.addr = tq->data_ring.basePA + | |
534 | tq->tx_ring.next2fill * | |
535 | sizeof(struct Vmxnet3_TxDataDesc); | |
536 | ctx->sop_txd->dword[2] = dw2 | ctx->copy_size; | |
537 | ctx->sop_txd->dword[3] = 0; | |
538 | ||
539 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
540 | tbi->map_type = VMXNET3_MAP_NONE; | |
541 | ||
542 | dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
543 | tq->tx_ring.next2fill, ctx->sop_txd->txd.addr, | |
544 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); | |
545 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
546 | ||
547 | /* use the right gen for non-SOP desc */ | |
548 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
549 | } | |
550 | ||
551 | /* linear part can use multiple tx desc if it's big */ | |
552 | len = skb_headlen(skb) - ctx->copy_size; | |
553 | buf_offset = ctx->copy_size; | |
554 | while (len) { | |
555 | u32 buf_size; | |
556 | ||
557 | buf_size = len > VMXNET3_MAX_TX_BUF_SIZE ? | |
558 | VMXNET3_MAX_TX_BUF_SIZE : len; | |
559 | ||
560 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
561 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
562 | tbi->dma_addr = pci_map_single(adapter->pdev, | |
563 | skb->data + buf_offset, buf_size, | |
564 | PCI_DMA_TODEVICE); | |
565 | ||
566 | tbi->len = buf_size; /* this automatically convert 2^14 to 0 */ | |
567 | ||
568 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
569 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
570 | ||
571 | gdesc->txd.addr = tbi->dma_addr; | |
572 | gdesc->dword[2] = dw2 | buf_size; | |
573 | gdesc->dword[3] = 0; | |
574 | ||
575 | dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
576 | tq->tx_ring.next2fill, gdesc->txd.addr, | |
577 | gdesc->dword[2], gdesc->dword[3]); | |
578 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
579 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
580 | ||
581 | len -= buf_size; | |
582 | buf_offset += buf_size; | |
583 | } | |
584 | ||
585 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
586 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
587 | ||
588 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
589 | tbi->map_type = VMXNET3_MAP_PAGE; | |
590 | tbi->dma_addr = pci_map_page(adapter->pdev, frag->page, | |
591 | frag->page_offset, frag->size, | |
592 | PCI_DMA_TODEVICE); | |
593 | ||
594 | tbi->len = frag->size; | |
595 | ||
596 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
597 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
598 | ||
599 | gdesc->txd.addr = tbi->dma_addr; | |
600 | gdesc->dword[2] = dw2 | frag->size; | |
601 | gdesc->dword[3] = 0; | |
602 | ||
603 | dprintk(KERN_ERR "txd[%u]: 0x%llu %u %u\n", | |
604 | tq->tx_ring.next2fill, gdesc->txd.addr, | |
605 | gdesc->dword[2], gdesc->dword[3]); | |
606 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
607 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
608 | } | |
609 | ||
610 | ctx->eop_txd = gdesc; | |
611 | ||
612 | /* set the last buf_info for the pkt */ | |
613 | tbi->skb = skb; | |
614 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
615 | } | |
616 | ||
617 | ||
618 | /* | |
619 | * parse and copy relevant protocol headers: | |
620 | * For a tso pkt, relevant headers are L2/3/4 including options | |
621 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
622 | * if it's a TCP/UDP pkt | |
623 | * | |
624 | * Returns: | |
625 | * -1: error happens during parsing | |
626 | * 0: protocol headers parsed, but too big to be copied | |
627 | * 1: protocol headers parsed and copied | |
628 | * | |
629 | * Other effects: | |
630 | * 1. related *ctx fields are updated. | |
631 | * 2. ctx->copy_size is # of bytes copied | |
632 | * 3. the portion copied is guaranteed to be in the linear part | |
633 | * | |
634 | */ | |
635 | static int | |
636 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
637 | struct vmxnet3_tx_ctx *ctx, | |
638 | struct vmxnet3_adapter *adapter) | |
639 | { | |
640 | struct Vmxnet3_TxDataDesc *tdd; | |
641 | ||
642 | if (ctx->mss) { | |
643 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); | |
644 | ctx->l4_hdr_size = ((struct tcphdr *) | |
645 | skb_transport_header(skb))->doff * 4; | |
646 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; | |
647 | } else { | |
648 | unsigned int pull_size; | |
649 | ||
650 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
651 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); | |
652 | ||
653 | if (ctx->ipv4) { | |
654 | struct iphdr *iph = (struct iphdr *) | |
655 | skb_network_header(skb); | |
656 | if (iph->protocol == IPPROTO_TCP) { | |
657 | pull_size = ctx->eth_ip_hdr_size + | |
658 | sizeof(struct tcphdr); | |
659 | ||
660 | if (unlikely(!pskb_may_pull(skb, | |
661 | pull_size))) { | |
662 | goto err; | |
663 | } | |
664 | ctx->l4_hdr_size = ((struct tcphdr *) | |
665 | skb_transport_header(skb))->doff * 4; | |
666 | } else if (iph->protocol == IPPROTO_UDP) { | |
667 | ctx->l4_hdr_size = | |
668 | sizeof(struct udphdr); | |
669 | } else { | |
670 | ctx->l4_hdr_size = 0; | |
671 | } | |
672 | } else { | |
673 | /* for simplicity, don't copy L4 headers */ | |
674 | ctx->l4_hdr_size = 0; | |
675 | } | |
676 | ctx->copy_size = ctx->eth_ip_hdr_size + | |
677 | ctx->l4_hdr_size; | |
678 | } else { | |
679 | ctx->eth_ip_hdr_size = 0; | |
680 | ctx->l4_hdr_size = 0; | |
681 | /* copy as much as allowed */ | |
682 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
683 | , skb_headlen(skb)); | |
684 | } | |
685 | ||
686 | /* make sure headers are accessible directly */ | |
687 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
688 | goto err; | |
689 | } | |
690 | ||
691 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
692 | tq->stats.oversized_hdr++; | |
693 | ctx->copy_size = 0; | |
694 | return 0; | |
695 | } | |
696 | ||
697 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
698 | ||
699 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
700 | dprintk(KERN_ERR "copy %u bytes to dataRing[%u]\n", | |
701 | ctx->copy_size, tq->tx_ring.next2fill); | |
702 | return 1; | |
703 | ||
704 | err: | |
705 | return -1; | |
706 | } | |
707 | ||
708 | ||
709 | static void | |
710 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
711 | struct vmxnet3_tx_ctx *ctx) | |
712 | { | |
713 | struct tcphdr *tcph = (struct tcphdr *)skb_transport_header(skb); | |
714 | if (ctx->ipv4) { | |
715 | struct iphdr *iph = (struct iphdr *)skb_network_header(skb); | |
716 | iph->check = 0; | |
717 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
718 | IPPROTO_TCP, 0); | |
719 | } else { | |
720 | struct ipv6hdr *iph = (struct ipv6hdr *)skb_network_header(skb); | |
721 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, | |
722 | IPPROTO_TCP, 0); | |
723 | } | |
724 | } | |
725 | ||
726 | ||
727 | /* | |
728 | * Transmits a pkt thru a given tq | |
729 | * Returns: | |
730 | * NETDEV_TX_OK: descriptors are setup successfully | |
731 | * NETDEV_TX_OK: error occured, the pkt is dropped | |
732 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped | |
733 | * | |
734 | * Side-effects: | |
735 | * 1. tx ring may be changed | |
736 | * 2. tq stats may be updated accordingly | |
737 | * 3. shared->txNumDeferred may be updated | |
738 | */ | |
739 | ||
740 | static int | |
741 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
742 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
743 | { | |
744 | int ret; | |
745 | u32 count; | |
746 | unsigned long flags; | |
747 | struct vmxnet3_tx_ctx ctx; | |
748 | union Vmxnet3_GenericDesc *gdesc; | |
749 | ||
750 | /* conservatively estimate # of descriptors to use */ | |
751 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + | |
752 | skb_shinfo(skb)->nr_frags + 1; | |
753 | ||
754 | ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP)); | |
755 | ||
756 | ctx.mss = skb_shinfo(skb)->gso_size; | |
757 | if (ctx.mss) { | |
758 | if (skb_header_cloned(skb)) { | |
759 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
760 | GFP_ATOMIC) != 0)) { | |
761 | tq->stats.drop_tso++; | |
762 | goto drop_pkt; | |
763 | } | |
764 | tq->stats.copy_skb_header++; | |
765 | } | |
766 | vmxnet3_prepare_tso(skb, &ctx); | |
767 | } else { | |
768 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
769 | ||
770 | /* non-tso pkts must not use more than | |
771 | * VMXNET3_MAX_TXD_PER_PKT entries | |
772 | */ | |
773 | if (skb_linearize(skb) != 0) { | |
774 | tq->stats.drop_too_many_frags++; | |
775 | goto drop_pkt; | |
776 | } | |
777 | tq->stats.linearized++; | |
778 | ||
779 | /* recalculate the # of descriptors to use */ | |
780 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
781 | } | |
782 | } | |
783 | ||
784 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); | |
785 | if (ret >= 0) { | |
786 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
787 | /* hdrs parsed, check against other limits */ | |
788 | if (ctx.mss) { | |
789 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
790 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
791 | goto hdr_too_big; | |
792 | } | |
793 | } else { | |
794 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
795 | if (unlikely(ctx.eth_ip_hdr_size + | |
796 | skb->csum_offset > | |
797 | VMXNET3_MAX_CSUM_OFFSET)) { | |
798 | goto hdr_too_big; | |
799 | } | |
800 | } | |
801 | } | |
802 | } else { | |
803 | tq->stats.drop_hdr_inspect_err++; | |
804 | goto drop_pkt; | |
805 | } | |
806 | ||
807 | spin_lock_irqsave(&tq->tx_lock, flags); | |
808 | ||
809 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
810 | tq->stats.tx_ring_full++; | |
811 | dprintk(KERN_ERR "tx queue stopped on %s, next2comp %u" | |
812 | " next2fill %u\n", adapter->netdev->name, | |
813 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
814 | ||
815 | vmxnet3_tq_stop(tq, adapter); | |
816 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
817 | return NETDEV_TX_BUSY; | |
818 | } | |
819 | ||
820 | /* fill tx descs related to addr & len */ | |
821 | vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter); | |
822 | ||
823 | /* setup the EOP desc */ | |
824 | ctx.eop_txd->dword[3] = VMXNET3_TXD_CQ | VMXNET3_TXD_EOP; | |
825 | ||
826 | /* setup the SOP desc */ | |
827 | gdesc = ctx.sop_txd; | |
828 | if (ctx.mss) { | |
829 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
830 | gdesc->txd.om = VMXNET3_OM_TSO; | |
831 | gdesc->txd.msscof = ctx.mss; | |
832 | tq->shared->txNumDeferred += (skb->len - gdesc->txd.hlen + | |
833 | ctx.mss - 1) / ctx.mss; | |
834 | } else { | |
835 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
836 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
837 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
838 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
839 | skb->csum_offset; | |
840 | } else { | |
841 | gdesc->txd.om = 0; | |
842 | gdesc->txd.msscof = 0; | |
843 | } | |
844 | tq->shared->txNumDeferred++; | |
845 | } | |
846 | ||
847 | if (vlan_tx_tag_present(skb)) { | |
848 | gdesc->txd.ti = 1; | |
849 | gdesc->txd.tci = vlan_tx_tag_get(skb); | |
850 | } | |
851 | ||
852 | wmb(); | |
853 | ||
854 | /* finally flips the GEN bit of the SOP desc */ | |
855 | gdesc->dword[2] ^= VMXNET3_TXD_GEN; | |
856 | dprintk(KERN_ERR "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", | |
857 | (u32)((union Vmxnet3_GenericDesc *)ctx.sop_txd - | |
858 | tq->tx_ring.base), gdesc->txd.addr, gdesc->dword[2], | |
859 | gdesc->dword[3]); | |
860 | ||
861 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
862 | ||
863 | if (tq->shared->txNumDeferred >= tq->shared->txThreshold) { | |
864 | tq->shared->txNumDeferred = 0; | |
865 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_TXPROD, | |
866 | tq->tx_ring.next2fill); | |
867 | } | |
868 | netdev->trans_start = jiffies; | |
869 | ||
870 | return NETDEV_TX_OK; | |
871 | ||
872 | hdr_too_big: | |
873 | tq->stats.drop_oversized_hdr++; | |
874 | drop_pkt: | |
875 | tq->stats.drop_total++; | |
876 | dev_kfree_skb(skb); | |
877 | return NETDEV_TX_OK; | |
878 | } | |
879 | ||
880 | ||
881 | static netdev_tx_t | |
882 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
883 | { | |
884 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
885 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue; | |
886 | ||
887 | return vmxnet3_tq_xmit(skb, tq, adapter, netdev); | |
888 | } | |
889 | ||
890 | ||
891 | static void | |
892 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
893 | struct sk_buff *skb, | |
894 | union Vmxnet3_GenericDesc *gdesc) | |
895 | { | |
896 | if (!gdesc->rcd.cnc && adapter->rxcsum) { | |
897 | /* typical case: TCP/UDP over IP and both csums are correct */ | |
898 | if ((gdesc->dword[3] & VMXNET3_RCD_CSUM_OK) == | |
899 | VMXNET3_RCD_CSUM_OK) { | |
900 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
901 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
902 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
903 | BUG_ON(gdesc->rcd.frg); | |
904 | } else { | |
905 | if (gdesc->rcd.csum) { | |
906 | skb->csum = htons(gdesc->rcd.csum); | |
907 | skb->ip_summed = CHECKSUM_PARTIAL; | |
908 | } else { | |
909 | skb->ip_summed = CHECKSUM_NONE; | |
910 | } | |
911 | } | |
912 | } else { | |
913 | skb->ip_summed = CHECKSUM_NONE; | |
914 | } | |
915 | } | |
916 | ||
917 | ||
918 | static void | |
919 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
920 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
921 | { | |
922 | rq->stats.drop_err++; | |
923 | if (!rcd->fcs) | |
924 | rq->stats.drop_fcs++; | |
925 | ||
926 | rq->stats.drop_total++; | |
927 | ||
928 | /* | |
929 | * We do not unmap and chain the rx buffer to the skb. | |
930 | * We basically pretend this buffer is not used and will be recycled | |
931 | * by vmxnet3_rq_alloc_rx_buf() | |
932 | */ | |
933 | ||
934 | /* | |
935 | * ctx->skb may be NULL if this is the first and the only one | |
936 | * desc for the pkt | |
937 | */ | |
938 | if (ctx->skb) | |
939 | dev_kfree_skb_irq(ctx->skb); | |
940 | ||
941 | ctx->skb = NULL; | |
942 | } | |
943 | ||
944 | ||
945 | static int | |
946 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
947 | struct vmxnet3_adapter *adapter, int quota) | |
948 | { | |
949 | static u32 rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2}; | |
950 | u32 num_rxd = 0; | |
951 | struct Vmxnet3_RxCompDesc *rcd; | |
952 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
953 | ||
954 | rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd; | |
955 | while (rcd->gen == rq->comp_ring.gen) { | |
956 | struct vmxnet3_rx_buf_info *rbi; | |
957 | struct sk_buff *skb; | |
958 | int num_to_alloc; | |
959 | struct Vmxnet3_RxDesc *rxd; | |
960 | u32 idx, ring_idx; | |
961 | ||
962 | if (num_rxd >= quota) { | |
963 | /* we may stop even before we see the EOP desc of | |
964 | * the current pkt | |
965 | */ | |
966 | break; | |
967 | } | |
968 | num_rxd++; | |
969 | ||
970 | idx = rcd->rxdIdx; | |
971 | ring_idx = rcd->rqID == rq->qid ? 0 : 1; | |
972 | ||
973 | rxd = &rq->rx_ring[ring_idx].base[idx].rxd; | |
974 | rbi = rq->buf_info[ring_idx] + idx; | |
975 | ||
976 | BUG_ON(rxd->addr != rbi->dma_addr || rxd->len != rbi->len); | |
977 | ||
978 | if (unlikely(rcd->eop && rcd->err)) { | |
979 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
980 | goto rcd_done; | |
981 | } | |
982 | ||
983 | if (rcd->sop) { /* first buf of the pkt */ | |
984 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
985 | rcd->rqID != rq->qid); | |
986 | ||
987 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
988 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
989 | ||
990 | if (unlikely(rcd->len == 0)) { | |
991 | /* Pretend the rx buffer is skipped. */ | |
992 | BUG_ON(!(rcd->sop && rcd->eop)); | |
993 | dprintk(KERN_ERR "rxRing[%u][%u] 0 length\n", | |
994 | ring_idx, idx); | |
995 | goto rcd_done; | |
996 | } | |
997 | ||
998 | ctx->skb = rbi->skb; | |
999 | rbi->skb = NULL; | |
1000 | ||
1001 | pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len, | |
1002 | PCI_DMA_FROMDEVICE); | |
1003 | ||
1004 | skb_put(ctx->skb, rcd->len); | |
1005 | } else { | |
1006 | BUG_ON(ctx->skb == NULL); | |
1007 | /* non SOP buffer must be type 1 in most cases */ | |
1008 | if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) { | |
1009 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
1010 | ||
1011 | if (rcd->len) { | |
1012 | pci_unmap_page(adapter->pdev, | |
1013 | rbi->dma_addr, rbi->len, | |
1014 | PCI_DMA_FROMDEVICE); | |
1015 | ||
1016 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
1017 | rbi->page = NULL; | |
1018 | } | |
1019 | } else { | |
1020 | /* | |
1021 | * The only time a non-SOP buffer is type 0 is | |
1022 | * when it's EOP and error flag is raised, which | |
1023 | * has already been handled. | |
1024 | */ | |
1025 | BUG_ON(true); | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | skb = ctx->skb; | |
1030 | if (rcd->eop) { | |
1031 | skb->len += skb->data_len; | |
1032 | skb->truesize += skb->data_len; | |
1033 | ||
1034 | vmxnet3_rx_csum(adapter, skb, | |
1035 | (union Vmxnet3_GenericDesc *)rcd); | |
1036 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1037 | ||
1038 | if (unlikely(adapter->vlan_grp && rcd->ts)) { | |
1039 | vlan_hwaccel_receive_skb(skb, | |
1040 | adapter->vlan_grp, rcd->tci); | |
1041 | } else { | |
1042 | netif_receive_skb(skb); | |
1043 | } | |
1044 | ||
1045 | adapter->netdev->last_rx = jiffies; | |
1046 | ctx->skb = NULL; | |
1047 | } | |
1048 | ||
1049 | rcd_done: | |
1050 | /* device may skip some rx descs */ | |
1051 | rq->rx_ring[ring_idx].next2comp = idx; | |
1052 | VMXNET3_INC_RING_IDX_ONLY(rq->rx_ring[ring_idx].next2comp, | |
1053 | rq->rx_ring[ring_idx].size); | |
1054 | ||
1055 | /* refill rx buffers frequently to avoid starving the h/w */ | |
1056 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(rq->rx_ring + | |
1057 | ring_idx); | |
1058 | if (unlikely(num_to_alloc > VMXNET3_RX_ALLOC_THRESHOLD(rq, | |
1059 | ring_idx, adapter))) { | |
1060 | vmxnet3_rq_alloc_rx_buf(rq, ring_idx, num_to_alloc, | |
1061 | adapter); | |
1062 | ||
1063 | /* if needed, update the register */ | |
1064 | if (unlikely(rq->shared->updateRxProd)) { | |
1065 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1066 | rxprod_reg[ring_idx] + rq->qid * 8, | |
1067 | rq->rx_ring[ring_idx].next2fill); | |
1068 | rq->uncommitted[ring_idx] = 0; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
1073 | rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd; | |
1074 | } | |
1075 | ||
1076 | return num_rxd; | |
1077 | } | |
1078 | ||
1079 | ||
1080 | static void | |
1081 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1082 | struct vmxnet3_adapter *adapter) | |
1083 | { | |
1084 | u32 i, ring_idx; | |
1085 | struct Vmxnet3_RxDesc *rxd; | |
1086 | ||
1087 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1088 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
1089 | rxd = &rq->rx_ring[ring_idx].base[i].rxd; | |
1090 | ||
1091 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1092 | rq->buf_info[ring_idx][i].skb) { | |
1093 | pci_unmap_single(adapter->pdev, rxd->addr, | |
1094 | rxd->len, PCI_DMA_FROMDEVICE); | |
1095 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1096 | rq->buf_info[ring_idx][i].skb = NULL; | |
1097 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1098 | rq->buf_info[ring_idx][i].page) { | |
1099 | pci_unmap_page(adapter->pdev, rxd->addr, | |
1100 | rxd->len, PCI_DMA_FROMDEVICE); | |
1101 | put_page(rq->buf_info[ring_idx][i].page); | |
1102 | rq->buf_info[ring_idx][i].page = NULL; | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1107 | rq->rx_ring[ring_idx].next2fill = | |
1108 | rq->rx_ring[ring_idx].next2comp = 0; | |
1109 | rq->uncommitted[ring_idx] = 0; | |
1110 | } | |
1111 | ||
1112 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1113 | rq->comp_ring.next2proc = 0; | |
1114 | } | |
1115 | ||
1116 | ||
1117 | void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, | |
1118 | struct vmxnet3_adapter *adapter) | |
1119 | { | |
1120 | int i; | |
1121 | int j; | |
1122 | ||
1123 | /* all rx buffers must have already been freed */ | |
1124 | for (i = 0; i < 2; i++) { | |
1125 | if (rq->buf_info[i]) { | |
1126 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1127 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | ||
1132 | kfree(rq->buf_info[0]); | |
1133 | ||
1134 | for (i = 0; i < 2; i++) { | |
1135 | if (rq->rx_ring[i].base) { | |
1136 | pci_free_consistent(adapter->pdev, rq->rx_ring[i].size | |
1137 | * sizeof(struct Vmxnet3_RxDesc), | |
1138 | rq->rx_ring[i].base, | |
1139 | rq->rx_ring[i].basePA); | |
1140 | rq->rx_ring[i].base = NULL; | |
1141 | } | |
1142 | rq->buf_info[i] = NULL; | |
1143 | } | |
1144 | ||
1145 | if (rq->comp_ring.base) { | |
1146 | pci_free_consistent(adapter->pdev, rq->comp_ring.size * | |
1147 | sizeof(struct Vmxnet3_RxCompDesc), | |
1148 | rq->comp_ring.base, rq->comp_ring.basePA); | |
1149 | rq->comp_ring.base = NULL; | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | ||
1154 | static int | |
1155 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1156 | struct vmxnet3_adapter *adapter) | |
1157 | { | |
1158 | int i; | |
1159 | ||
1160 | /* initialize buf_info */ | |
1161 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1162 | ||
1163 | /* 1st buf for a pkt is skbuff */ | |
1164 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1165 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1166 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1167 | } else { /* subsequent bufs for a pkt is frag */ | |
1168 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1169 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1170 | } | |
1171 | } | |
1172 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1173 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1174 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1175 | } | |
1176 | ||
1177 | /* reset internal state and allocate buffers for both rings */ | |
1178 | for (i = 0; i < 2; i++) { | |
1179 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
1180 | rq->uncommitted[i] = 0; | |
1181 | ||
1182 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1183 | sizeof(struct Vmxnet3_RxDesc)); | |
1184 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1185 | } | |
1186 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1187 | adapter) == 0) { | |
1188 | /* at least has 1 rx buffer for the 1st ring */ | |
1189 | return -ENOMEM; | |
1190 | } | |
1191 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1192 | ||
1193 | /* reset the comp ring */ | |
1194 | rq->comp_ring.next2proc = 0; | |
1195 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1196 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1197 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1198 | ||
1199 | /* reset rxctx */ | |
1200 | rq->rx_ctx.skb = NULL; | |
1201 | ||
1202 | /* stats are not reset */ | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | ||
1207 | static int | |
1208 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1209 | { | |
1210 | int i; | |
1211 | size_t sz; | |
1212 | struct vmxnet3_rx_buf_info *bi; | |
1213 | ||
1214 | for (i = 0; i < 2; i++) { | |
1215 | ||
1216 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
1217 | rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz, | |
1218 | &rq->rx_ring[i].basePA); | |
1219 | if (!rq->rx_ring[i].base) { | |
1220 | printk(KERN_ERR "%s: failed to allocate rx ring %d\n", | |
1221 | adapter->netdev->name, i); | |
1222 | goto err; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
1227 | rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz, | |
1228 | &rq->comp_ring.basePA); | |
1229 | if (!rq->comp_ring.base) { | |
1230 | printk(KERN_ERR "%s: failed to allocate rx comp ring\n", | |
1231 | adapter->netdev->name); | |
1232 | goto err; | |
1233 | } | |
1234 | ||
1235 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1236 | rq->rx_ring[1].size); | |
1237 | bi = kmalloc(sz, GFP_KERNEL); | |
1238 | if (!bi) { | |
1239 | printk(KERN_ERR "%s: failed to allocate rx bufinfo\n", | |
1240 | adapter->netdev->name); | |
1241 | goto err; | |
1242 | } | |
1243 | memset(bi, 0, sz); | |
1244 | rq->buf_info[0] = bi; | |
1245 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1246 | ||
1247 | return 0; | |
1248 | ||
1249 | err: | |
1250 | vmxnet3_rq_destroy(rq, adapter); | |
1251 | return -ENOMEM; | |
1252 | } | |
1253 | ||
1254 | ||
1255 | static int | |
1256 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1257 | { | |
1258 | if (unlikely(adapter->shared->ecr)) | |
1259 | vmxnet3_process_events(adapter); | |
1260 | ||
1261 | vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter); | |
1262 | return vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget); | |
1263 | } | |
1264 | ||
1265 | ||
1266 | static int | |
1267 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1268 | { | |
1269 | struct vmxnet3_adapter *adapter = container_of(napi, | |
1270 | struct vmxnet3_adapter, napi); | |
1271 | int rxd_done; | |
1272 | ||
1273 | rxd_done = vmxnet3_do_poll(adapter, budget); | |
1274 | ||
1275 | if (rxd_done < budget) { | |
1276 | napi_complete(napi); | |
1277 | vmxnet3_enable_intr(adapter, 0); | |
1278 | } | |
1279 | return rxd_done; | |
1280 | } | |
1281 | ||
1282 | ||
1283 | /* Interrupt handler for vmxnet3 */ | |
1284 | static irqreturn_t | |
1285 | vmxnet3_intr(int irq, void *dev_id) | |
1286 | { | |
1287 | struct net_device *dev = dev_id; | |
1288 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1289 | ||
1290 | if (unlikely(adapter->intr.type == VMXNET3_IT_INTX)) { | |
1291 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); | |
1292 | if (unlikely(icr == 0)) | |
1293 | /* not ours */ | |
1294 | return IRQ_NONE; | |
1295 | } | |
1296 | ||
1297 | ||
1298 | /* disable intr if needed */ | |
1299 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1300 | vmxnet3_disable_intr(adapter, 0); | |
1301 | ||
1302 | napi_schedule(&adapter->napi); | |
1303 | ||
1304 | return IRQ_HANDLED; | |
1305 | } | |
1306 | ||
1307 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1308 | ||
1309 | ||
1310 | /* netpoll callback. */ | |
1311 | static void | |
1312 | vmxnet3_netpoll(struct net_device *netdev) | |
1313 | { | |
1314 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1315 | int irq; | |
1316 | ||
1317 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
1318 | irq = adapter->intr.msix_entries[0].vector; | |
1319 | else | |
1320 | irq = adapter->pdev->irq; | |
1321 | ||
1322 | disable_irq(irq); | |
1323 | vmxnet3_intr(irq, netdev); | |
1324 | enable_irq(irq); | |
1325 | } | |
1326 | #endif | |
1327 | ||
1328 | static int | |
1329 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1330 | { | |
1331 | int err; | |
1332 | ||
1333 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
1334 | /* we only use 1 MSI-X vector */ | |
1335 | err = request_irq(adapter->intr.msix_entries[0].vector, | |
1336 | vmxnet3_intr, 0, adapter->netdev->name, | |
1337 | adapter->netdev); | |
1338 | } else if (adapter->intr.type == VMXNET3_IT_MSI) { | |
1339 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, | |
1340 | adapter->netdev->name, adapter->netdev); | |
1341 | } else { | |
1342 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, | |
1343 | IRQF_SHARED, adapter->netdev->name, | |
1344 | adapter->netdev); | |
1345 | } | |
1346 | ||
1347 | if (err) | |
1348 | printk(KERN_ERR "Failed to request irq %s (intr type:%d), error" | |
1349 | ":%d\n", adapter->netdev->name, adapter->intr.type, err); | |
1350 | ||
1351 | ||
1352 | if (!err) { | |
1353 | int i; | |
1354 | /* init our intr settings */ | |
1355 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
1356 | adapter->intr.mod_levels[i] = UPT1_IML_ADAPTIVE; | |
1357 | ||
1358 | /* next setup intr index for all intr sources */ | |
1359 | adapter->tx_queue.comp_ring.intr_idx = 0; | |
1360 | adapter->rx_queue.comp_ring.intr_idx = 0; | |
1361 | adapter->intr.event_intr_idx = 0; | |
1362 | ||
1363 | printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors " | |
1364 | "allocated\n", adapter->netdev->name, adapter->intr.type, | |
1365 | adapter->intr.mask_mode, adapter->intr.num_intrs); | |
1366 | } | |
1367 | ||
1368 | return err; | |
1369 | } | |
1370 | ||
1371 | ||
1372 | static void | |
1373 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
1374 | { | |
1375 | BUG_ON(adapter->intr.type == VMXNET3_IT_AUTO || | |
1376 | adapter->intr.num_intrs <= 0); | |
1377 | ||
1378 | switch (adapter->intr.type) { | |
1379 | case VMXNET3_IT_MSIX: | |
1380 | { | |
1381 | int i; | |
1382 | ||
1383 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
1384 | free_irq(adapter->intr.msix_entries[i].vector, | |
1385 | adapter->netdev); | |
1386 | break; | |
1387 | } | |
1388 | case VMXNET3_IT_MSI: | |
1389 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1390 | break; | |
1391 | case VMXNET3_IT_INTX: | |
1392 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1393 | break; | |
1394 | default: | |
1395 | BUG_ON(true); | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | ||
1400 | static void | |
1401 | vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
1402 | { | |
1403 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1404 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
1405 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1406 | ||
1407 | if (grp) { | |
1408 | /* add vlan rx stripping. */ | |
1409 | if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) { | |
1410 | int i; | |
1411 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
1412 | adapter->vlan_grp = grp; | |
1413 | ||
1414 | /* update FEATURES to device */ | |
1415 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; | |
1416 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1417 | VMXNET3_CMD_UPDATE_FEATURE); | |
1418 | /* | |
1419 | * Clear entire vfTable; then enable untagged pkts. | |
1420 | * Note: setting one entry in vfTable to non-zero turns | |
1421 | * on VLAN rx filtering. | |
1422 | */ | |
1423 | for (i = 0; i < VMXNET3_VFT_SIZE; i++) | |
1424 | vfTable[i] = 0; | |
1425 | ||
1426 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1427 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1428 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1429 | } else { | |
1430 | printk(KERN_ERR "%s: vlan_rx_register when device has " | |
1431 | "no NETIF_F_HW_VLAN_RX\n", netdev->name); | |
1432 | } | |
1433 | } else { | |
1434 | /* remove vlan rx stripping. */ | |
1435 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
1436 | adapter->vlan_grp = NULL; | |
1437 | ||
1438 | if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) { | |
1439 | int i; | |
1440 | ||
1441 | for (i = 0; i < VMXNET3_VFT_SIZE; i++) { | |
1442 | /* clear entire vfTable; this also disables | |
1443 | * VLAN rx filtering | |
1444 | */ | |
1445 | vfTable[i] = 0; | |
1446 | } | |
1447 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1448 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1449 | ||
1450 | /* update FEATURES to device */ | |
1451 | devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN; | |
1452 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1453 | VMXNET3_CMD_UPDATE_FEATURE); | |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | ||
1459 | static void | |
1460 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
1461 | { | |
1462 | if (adapter->vlan_grp) { | |
1463 | u16 vid; | |
1464 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1465 | bool activeVlan = false; | |
1466 | ||
1467 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1468 | if (vlan_group_get_device(adapter->vlan_grp, vid)) { | |
1469 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1470 | activeVlan = true; | |
1471 | } | |
1472 | } | |
1473 | if (activeVlan) { | |
1474 | /* continue to allow untagged pkts */ | |
1475 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | ||
1481 | static void | |
1482 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1483 | { | |
1484 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1485 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1486 | ||
1487 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1488 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1489 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1490 | } | |
1491 | ||
1492 | ||
1493 | static void | |
1494 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1495 | { | |
1496 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1497 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1498 | ||
1499 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
1500 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1501 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1502 | } | |
1503 | ||
1504 | ||
1505 | static u8 * | |
1506 | vmxnet3_copy_mc(struct net_device *netdev) | |
1507 | { | |
1508 | u8 *buf = NULL; | |
1509 | u32 sz = netdev->mc_count * ETH_ALEN; | |
1510 | ||
1511 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
1512 | if (sz <= 0xffff) { | |
1513 | /* We may be called with BH disabled */ | |
1514 | buf = kmalloc(sz, GFP_ATOMIC); | |
1515 | if (buf) { | |
1516 | int i; | |
1517 | struct dev_mc_list *mc = netdev->mc_list; | |
1518 | ||
1519 | for (i = 0; i < netdev->mc_count; i++) { | |
1520 | BUG_ON(!mc); | |
1521 | memcpy(buf + i * ETH_ALEN, mc->dmi_addr, | |
1522 | ETH_ALEN); | |
1523 | mc = mc->next; | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | return buf; | |
1528 | } | |
1529 | ||
1530 | ||
1531 | static void | |
1532 | vmxnet3_set_mc(struct net_device *netdev) | |
1533 | { | |
1534 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1535 | struct Vmxnet3_RxFilterConf *rxConf = | |
1536 | &adapter->shared->devRead.rxFilterConf; | |
1537 | u8 *new_table = NULL; | |
1538 | u32 new_mode = VMXNET3_RXM_UCAST; | |
1539 | ||
1540 | if (netdev->flags & IFF_PROMISC) | |
1541 | new_mode |= VMXNET3_RXM_PROMISC; | |
1542 | ||
1543 | if (netdev->flags & IFF_BROADCAST) | |
1544 | new_mode |= VMXNET3_RXM_BCAST; | |
1545 | ||
1546 | if (netdev->flags & IFF_ALLMULTI) | |
1547 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
1548 | else | |
1549 | if (netdev->mc_count > 0) { | |
1550 | new_table = vmxnet3_copy_mc(netdev); | |
1551 | if (new_table) { | |
1552 | new_mode |= VMXNET3_RXM_MCAST; | |
1553 | rxConf->mfTableLen = netdev->mc_count * | |
1554 | ETH_ALEN; | |
1555 | rxConf->mfTablePA = virt_to_phys(new_table); | |
1556 | } else { | |
1557 | printk(KERN_INFO "%s: failed to copy mcast list" | |
1558 | ", setting ALL_MULTI\n", netdev->name); | |
1559 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | ||
1564 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
1565 | rxConf->mfTableLen = 0; | |
1566 | rxConf->mfTablePA = 0; | |
1567 | } | |
1568 | ||
1569 | if (new_mode != rxConf->rxMode) { | |
1570 | rxConf->rxMode = new_mode; | |
1571 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1572 | VMXNET3_CMD_UPDATE_RX_MODE); | |
1573 | } | |
1574 | ||
1575 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1576 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
1577 | ||
1578 | kfree(new_table); | |
1579 | } | |
1580 | ||
1581 | ||
1582 | /* | |
1583 | * Set up driver_shared based on settings in adapter. | |
1584 | */ | |
1585 | ||
1586 | static void | |
1587 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
1588 | { | |
1589 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
1590 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
1591 | struct Vmxnet3_TxQueueConf *tqc; | |
1592 | struct Vmxnet3_RxQueueConf *rqc; | |
1593 | int i; | |
1594 | ||
1595 | memset(shared, 0, sizeof(*shared)); | |
1596 | ||
1597 | /* driver settings */ | |
1598 | shared->magic = VMXNET3_REV1_MAGIC; | |
1599 | devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM; | |
1600 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? | |
1601 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
1602 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
1603 | devRead->misc.driverInfo.vmxnet3RevSpt = 1; | |
1604 | devRead->misc.driverInfo.uptVerSpt = 1; | |
1605 | ||
1606 | devRead->misc.ddPA = virt_to_phys(adapter); | |
1607 | devRead->misc.ddLen = sizeof(struct vmxnet3_adapter); | |
1608 | ||
1609 | /* set up feature flags */ | |
1610 | if (adapter->rxcsum) | |
1611 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; | |
1612 | ||
1613 | if (adapter->lro) { | |
1614 | devRead->misc.uptFeatures |= UPT1_F_LRO; | |
1615 | devRead->misc.maxNumRxSG = 1 + MAX_SKB_FRAGS; | |
1616 | } | |
1617 | if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX) | |
1618 | && adapter->vlan_grp) { | |
1619 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; | |
1620 | } | |
1621 | ||
1622 | devRead->misc.mtu = adapter->netdev->mtu; | |
1623 | devRead->misc.queueDescPA = adapter->queue_desc_pa; | |
1624 | devRead->misc.queueDescLen = sizeof(struct Vmxnet3_TxQueueDesc) + | |
1625 | sizeof(struct Vmxnet3_RxQueueDesc); | |
1626 | ||
1627 | /* tx queue settings */ | |
1628 | BUG_ON(adapter->tx_queue.tx_ring.base == NULL); | |
1629 | ||
1630 | devRead->misc.numTxQueues = 1; | |
1631 | tqc = &adapter->tqd_start->conf; | |
1632 | tqc->txRingBasePA = adapter->tx_queue.tx_ring.basePA; | |
1633 | tqc->dataRingBasePA = adapter->tx_queue.data_ring.basePA; | |
1634 | tqc->compRingBasePA = adapter->tx_queue.comp_ring.basePA; | |
1635 | tqc->ddPA = virt_to_phys(adapter->tx_queue.buf_info); | |
1636 | tqc->txRingSize = adapter->tx_queue.tx_ring.size; | |
1637 | tqc->dataRingSize = adapter->tx_queue.data_ring.size; | |
1638 | tqc->compRingSize = adapter->tx_queue.comp_ring.size; | |
1639 | tqc->ddLen = sizeof(struct vmxnet3_tx_buf_info) * | |
1640 | tqc->txRingSize; | |
1641 | tqc->intrIdx = adapter->tx_queue.comp_ring.intr_idx; | |
1642 | ||
1643 | /* rx queue settings */ | |
1644 | devRead->misc.numRxQueues = 1; | |
1645 | rqc = &adapter->rqd_start->conf; | |
1646 | rqc->rxRingBasePA[0] = adapter->rx_queue.rx_ring[0].basePA; | |
1647 | rqc->rxRingBasePA[1] = adapter->rx_queue.rx_ring[1].basePA; | |
1648 | rqc->compRingBasePA = adapter->rx_queue.comp_ring.basePA; | |
1649 | rqc->ddPA = virt_to_phys(adapter->rx_queue.buf_info); | |
1650 | rqc->rxRingSize[0] = adapter->rx_queue.rx_ring[0].size; | |
1651 | rqc->rxRingSize[1] = adapter->rx_queue.rx_ring[1].size; | |
1652 | rqc->compRingSize = adapter->rx_queue.comp_ring.size; | |
1653 | rqc->ddLen = sizeof(struct vmxnet3_rx_buf_info) * | |
1654 | (rqc->rxRingSize[0] + rqc->rxRingSize[1]); | |
1655 | rqc->intrIdx = adapter->rx_queue.comp_ring.intr_idx; | |
1656 | ||
1657 | /* intr settings */ | |
1658 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
1659 | VMXNET3_IMM_AUTO; | |
1660 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
1661 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
1662 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
1663 | ||
1664 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
1665 | ||
1666 | /* rx filter settings */ | |
1667 | devRead->rxFilterConf.rxMode = 0; | |
1668 | vmxnet3_restore_vlan(adapter); | |
1669 | /* the rest are already zeroed */ | |
1670 | } | |
1671 | ||
1672 | ||
1673 | int | |
1674 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
1675 | { | |
1676 | int err; | |
1677 | u32 ret; | |
1678 | ||
1679 | dprintk(KERN_ERR "%s: skb_buf_size %d, rx_buf_per_pkt %d, ring sizes" | |
1680 | " %u %u %u\n", adapter->netdev->name, adapter->skb_buf_size, | |
1681 | adapter->rx_buf_per_pkt, adapter->tx_queue.tx_ring.size, | |
1682 | adapter->rx_queue.rx_ring[0].size, | |
1683 | adapter->rx_queue.rx_ring[1].size); | |
1684 | ||
1685 | vmxnet3_tq_init(&adapter->tx_queue, adapter); | |
1686 | err = vmxnet3_rq_init(&adapter->rx_queue, adapter); | |
1687 | if (err) { | |
1688 | printk(KERN_ERR "Failed to init rx queue for %s: error %d\n", | |
1689 | adapter->netdev->name, err); | |
1690 | goto rq_err; | |
1691 | } | |
1692 | ||
1693 | err = vmxnet3_request_irqs(adapter); | |
1694 | if (err) { | |
1695 | printk(KERN_ERR "Failed to setup irq for %s: error %d\n", | |
1696 | adapter->netdev->name, err); | |
1697 | goto irq_err; | |
1698 | } | |
1699 | ||
1700 | vmxnet3_setup_driver_shared(adapter); | |
1701 | ||
1702 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, | |
1703 | VMXNET3_GET_ADDR_LO(adapter->shared_pa)); | |
1704 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, | |
1705 | VMXNET3_GET_ADDR_HI(adapter->shared_pa)); | |
1706 | ||
1707 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1708 | VMXNET3_CMD_ACTIVATE_DEV); | |
1709 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
1710 | ||
1711 | if (ret != 0) { | |
1712 | printk(KERN_ERR "Failed to activate dev %s: error %u\n", | |
1713 | adapter->netdev->name, ret); | |
1714 | err = -EINVAL; | |
1715 | goto activate_err; | |
1716 | } | |
1717 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD, | |
1718 | adapter->rx_queue.rx_ring[0].next2fill); | |
1719 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD2, | |
1720 | adapter->rx_queue.rx_ring[1].next2fill); | |
1721 | ||
1722 | /* Apply the rx filter settins last. */ | |
1723 | vmxnet3_set_mc(adapter->netdev); | |
1724 | ||
1725 | /* | |
1726 | * Check link state when first activating device. It will start the | |
1727 | * tx queue if the link is up. | |
1728 | */ | |
1729 | vmxnet3_check_link(adapter); | |
1730 | ||
1731 | napi_enable(&adapter->napi); | |
1732 | vmxnet3_enable_all_intrs(adapter); | |
1733 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
1734 | return 0; | |
1735 | ||
1736 | activate_err: | |
1737 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
1738 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
1739 | vmxnet3_free_irqs(adapter); | |
1740 | irq_err: | |
1741 | rq_err: | |
1742 | /* free up buffers we allocated */ | |
1743 | vmxnet3_rq_cleanup(&adapter->rx_queue, adapter); | |
1744 | return err; | |
1745 | } | |
1746 | ||
1747 | ||
1748 | void | |
1749 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
1750 | { | |
1751 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); | |
1752 | } | |
1753 | ||
1754 | ||
1755 | int | |
1756 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
1757 | { | |
1758 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) | |
1759 | return 0; | |
1760 | ||
1761 | ||
1762 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1763 | VMXNET3_CMD_QUIESCE_DEV); | |
1764 | vmxnet3_disable_all_intrs(adapter); | |
1765 | ||
1766 | napi_disable(&adapter->napi); | |
1767 | netif_tx_disable(adapter->netdev); | |
1768 | adapter->link_speed = 0; | |
1769 | netif_carrier_off(adapter->netdev); | |
1770 | ||
1771 | vmxnet3_tq_cleanup(&adapter->tx_queue, adapter); | |
1772 | vmxnet3_rq_cleanup(&adapter->rx_queue, adapter); | |
1773 | vmxnet3_free_irqs(adapter); | |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | ||
1778 | static void | |
1779 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
1780 | { | |
1781 | u32 tmp; | |
1782 | ||
1783 | tmp = *(u32 *)mac; | |
1784 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
1785 | ||
1786 | tmp = (mac[5] << 8) | mac[4]; | |
1787 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
1788 | } | |
1789 | ||
1790 | ||
1791 | static int | |
1792 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
1793 | { | |
1794 | struct sockaddr *addr = p; | |
1795 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1796 | ||
1797 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1798 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
1799 | ||
1800 | return 0; | |
1801 | } | |
1802 | ||
1803 | ||
1804 | /* ==================== initialization and cleanup routines ============ */ | |
1805 | ||
1806 | static int | |
1807 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
1808 | { | |
1809 | int err; | |
1810 | unsigned long mmio_start, mmio_len; | |
1811 | struct pci_dev *pdev = adapter->pdev; | |
1812 | ||
1813 | err = pci_enable_device(pdev); | |
1814 | if (err) { | |
1815 | printk(KERN_ERR "Failed to enable adapter %s: error %d\n", | |
1816 | pci_name(pdev), err); | |
1817 | return err; | |
1818 | } | |
1819 | ||
1820 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
1821 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
1822 | printk(KERN_ERR "pci_set_consistent_dma_mask failed " | |
1823 | "for adapter %s\n", pci_name(pdev)); | |
1824 | err = -EIO; | |
1825 | goto err_set_mask; | |
1826 | } | |
1827 | *dma64 = true; | |
1828 | } else { | |
1829 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
1830 | printk(KERN_ERR "pci_set_dma_mask failed for adapter " | |
1831 | "%s\n", pci_name(pdev)); | |
1832 | err = -EIO; | |
1833 | goto err_set_mask; | |
1834 | } | |
1835 | *dma64 = false; | |
1836 | } | |
1837 | ||
1838 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
1839 | vmxnet3_driver_name); | |
1840 | if (err) { | |
1841 | printk(KERN_ERR "Failed to request region for adapter %s: " | |
1842 | "error %d\n", pci_name(pdev), err); | |
1843 | goto err_set_mask; | |
1844 | } | |
1845 | ||
1846 | pci_set_master(pdev); | |
1847 | ||
1848 | mmio_start = pci_resource_start(pdev, 0); | |
1849 | mmio_len = pci_resource_len(pdev, 0); | |
1850 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
1851 | if (!adapter->hw_addr0) { | |
1852 | printk(KERN_ERR "Failed to map bar0 for adapter %s\n", | |
1853 | pci_name(pdev)); | |
1854 | err = -EIO; | |
1855 | goto err_ioremap; | |
1856 | } | |
1857 | ||
1858 | mmio_start = pci_resource_start(pdev, 1); | |
1859 | mmio_len = pci_resource_len(pdev, 1); | |
1860 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
1861 | if (!adapter->hw_addr1) { | |
1862 | printk(KERN_ERR "Failed to map bar1 for adapter %s\n", | |
1863 | pci_name(pdev)); | |
1864 | err = -EIO; | |
1865 | goto err_bar1; | |
1866 | } | |
1867 | return 0; | |
1868 | ||
1869 | err_bar1: | |
1870 | iounmap(adapter->hw_addr0); | |
1871 | err_ioremap: | |
1872 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
1873 | err_set_mask: | |
1874 | pci_disable_device(pdev); | |
1875 | return err; | |
1876 | } | |
1877 | ||
1878 | ||
1879 | static void | |
1880 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
1881 | { | |
1882 | BUG_ON(!adapter->pdev); | |
1883 | ||
1884 | iounmap(adapter->hw_addr0); | |
1885 | iounmap(adapter->hw_addr1); | |
1886 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
1887 | pci_disable_device(adapter->pdev); | |
1888 | } | |
1889 | ||
1890 | ||
1891 | static void | |
1892 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
1893 | { | |
1894 | size_t sz; | |
1895 | ||
1896 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
1897 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
1898 | adapter->skb_buf_size = adapter->netdev->mtu + | |
1899 | VMXNET3_MAX_ETH_HDR_SIZE; | |
1900 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
1901 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
1902 | ||
1903 | adapter->rx_buf_per_pkt = 1; | |
1904 | } else { | |
1905 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
1906 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
1907 | VMXNET3_MAX_ETH_HDR_SIZE; | |
1908 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
1909 | } | |
1910 | ||
1911 | /* | |
1912 | * for simplicity, force the ring0 size to be a multiple of | |
1913 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
1914 | */ | |
1915 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
1916 | adapter->rx_queue.rx_ring[0].size = (adapter->rx_queue.rx_ring[0].size + | |
1917 | sz - 1) / sz * sz; | |
1918 | adapter->rx_queue.rx_ring[0].size = min_t(u32, | |
1919 | adapter->rx_queue.rx_ring[0].size, | |
1920 | VMXNET3_RX_RING_MAX_SIZE / sz * sz); | |
1921 | } | |
1922 | ||
1923 | ||
1924 | int | |
1925 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
1926 | u32 rx_ring_size, u32 rx_ring2_size) | |
1927 | { | |
1928 | int err; | |
1929 | ||
1930 | adapter->tx_queue.tx_ring.size = tx_ring_size; | |
1931 | adapter->tx_queue.data_ring.size = tx_ring_size; | |
1932 | adapter->tx_queue.comp_ring.size = tx_ring_size; | |
1933 | adapter->tx_queue.shared = &adapter->tqd_start->ctrl; | |
1934 | adapter->tx_queue.stopped = true; | |
1935 | err = vmxnet3_tq_create(&adapter->tx_queue, adapter); | |
1936 | if (err) | |
1937 | return err; | |
1938 | ||
1939 | adapter->rx_queue.rx_ring[0].size = rx_ring_size; | |
1940 | adapter->rx_queue.rx_ring[1].size = rx_ring2_size; | |
1941 | vmxnet3_adjust_rx_ring_size(adapter); | |
1942 | adapter->rx_queue.comp_ring.size = adapter->rx_queue.rx_ring[0].size + | |
1943 | adapter->rx_queue.rx_ring[1].size; | |
1944 | adapter->rx_queue.qid = 0; | |
1945 | adapter->rx_queue.qid2 = 1; | |
1946 | adapter->rx_queue.shared = &adapter->rqd_start->ctrl; | |
1947 | err = vmxnet3_rq_create(&adapter->rx_queue, adapter); | |
1948 | if (err) | |
1949 | vmxnet3_tq_destroy(&adapter->tx_queue, adapter); | |
1950 | ||
1951 | return err; | |
1952 | } | |
1953 | ||
1954 | static int | |
1955 | vmxnet3_open(struct net_device *netdev) | |
1956 | { | |
1957 | struct vmxnet3_adapter *adapter; | |
1958 | int err; | |
1959 | ||
1960 | adapter = netdev_priv(netdev); | |
1961 | ||
1962 | spin_lock_init(&adapter->tx_queue.tx_lock); | |
1963 | ||
1964 | err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE, | |
1965 | VMXNET3_DEF_RX_RING_SIZE, | |
1966 | VMXNET3_DEF_RX_RING_SIZE); | |
1967 | if (err) | |
1968 | goto queue_err; | |
1969 | ||
1970 | err = vmxnet3_activate_dev(adapter); | |
1971 | if (err) | |
1972 | goto activate_err; | |
1973 | ||
1974 | return 0; | |
1975 | ||
1976 | activate_err: | |
1977 | vmxnet3_rq_destroy(&adapter->rx_queue, adapter); | |
1978 | vmxnet3_tq_destroy(&adapter->tx_queue, adapter); | |
1979 | queue_err: | |
1980 | return err; | |
1981 | } | |
1982 | ||
1983 | ||
1984 | static int | |
1985 | vmxnet3_close(struct net_device *netdev) | |
1986 | { | |
1987 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1988 | ||
1989 | /* | |
1990 | * Reset_work may be in the middle of resetting the device, wait for its | |
1991 | * completion. | |
1992 | */ | |
1993 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
1994 | msleep(1); | |
1995 | ||
1996 | vmxnet3_quiesce_dev(adapter); | |
1997 | ||
1998 | vmxnet3_rq_destroy(&adapter->rx_queue, adapter); | |
1999 | vmxnet3_tq_destroy(&adapter->tx_queue, adapter); | |
2000 | ||
2001 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2002 | ||
2003 | ||
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | ||
2008 | void | |
2009 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2010 | { | |
2011 | /* | |
2012 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2013 | * vmxnet3_close() will deadlock. | |
2014 | */ | |
2015 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2016 | ||
2017 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
2018 | napi_enable(&adapter->napi); | |
2019 | dev_close(adapter->netdev); | |
2020 | } | |
2021 | ||
2022 | ||
2023 | static int | |
2024 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2025 | { | |
2026 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2027 | int err = 0; | |
2028 | ||
2029 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2030 | return -EINVAL; | |
2031 | ||
2032 | if (new_mtu > 1500 && !adapter->jumbo_frame) | |
2033 | return -EINVAL; | |
2034 | ||
2035 | netdev->mtu = new_mtu; | |
2036 | ||
2037 | /* | |
2038 | * Reset_work may be in the middle of resetting the device, wait for its | |
2039 | * completion. | |
2040 | */ | |
2041 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2042 | msleep(1); | |
2043 | ||
2044 | if (netif_running(netdev)) { | |
2045 | vmxnet3_quiesce_dev(adapter); | |
2046 | vmxnet3_reset_dev(adapter); | |
2047 | ||
2048 | /* we need to re-create the rx queue based on the new mtu */ | |
2049 | vmxnet3_rq_destroy(&adapter->rx_queue, adapter); | |
2050 | vmxnet3_adjust_rx_ring_size(adapter); | |
2051 | adapter->rx_queue.comp_ring.size = | |
2052 | adapter->rx_queue.rx_ring[0].size + | |
2053 | adapter->rx_queue.rx_ring[1].size; | |
2054 | err = vmxnet3_rq_create(&adapter->rx_queue, adapter); | |
2055 | if (err) { | |
2056 | printk(KERN_ERR "%s: failed to re-create rx queue," | |
2057 | " error %d. Closing it.\n", netdev->name, err); | |
2058 | goto out; | |
2059 | } | |
2060 | ||
2061 | err = vmxnet3_activate_dev(adapter); | |
2062 | if (err) { | |
2063 | printk(KERN_ERR "%s: failed to re-activate, error %d. " | |
2064 | "Closing it\n", netdev->name, err); | |
2065 | goto out; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | out: | |
2070 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2071 | if (err) | |
2072 | vmxnet3_force_close(adapter); | |
2073 | ||
2074 | return err; | |
2075 | } | |
2076 | ||
2077 | ||
2078 | static void | |
2079 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2080 | { | |
2081 | struct net_device *netdev = adapter->netdev; | |
2082 | ||
2083 | netdev->features = NETIF_F_SG | | |
2084 | NETIF_F_HW_CSUM | | |
2085 | NETIF_F_HW_VLAN_TX | | |
2086 | NETIF_F_HW_VLAN_RX | | |
2087 | NETIF_F_HW_VLAN_FILTER | | |
2088 | NETIF_F_TSO | | |
2089 | NETIF_F_TSO6 | | |
2090 | NETIF_F_LRO; | |
2091 | ||
2092 | printk(KERN_INFO "features: sg csum vlan jf tso tsoIPv6 lro"); | |
2093 | ||
2094 | adapter->rxcsum = true; | |
2095 | adapter->jumbo_frame = true; | |
2096 | adapter->lro = true; | |
2097 | ||
2098 | if (dma64) { | |
2099 | netdev->features |= NETIF_F_HIGHDMA; | |
2100 | printk(" highDMA"); | |
2101 | } | |
2102 | ||
2103 | netdev->vlan_features = netdev->features; | |
2104 | printk("\n"); | |
2105 | } | |
2106 | ||
2107 | ||
2108 | static void | |
2109 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2110 | { | |
2111 | u32 tmp; | |
2112 | ||
2113 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2114 | *(u32 *)mac = tmp; | |
2115 | ||
2116 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2117 | mac[4] = tmp & 0xff; | |
2118 | mac[5] = (tmp >> 8) & 0xff; | |
2119 | } | |
2120 | ||
2121 | ||
2122 | static void | |
2123 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2124 | { | |
2125 | u32 cfg; | |
2126 | ||
2127 | /* intr settings */ | |
2128 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2129 | VMXNET3_CMD_GET_CONF_INTR); | |
2130 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2131 | adapter->intr.type = cfg & 0x3; | |
2132 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2133 | ||
2134 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
2135 | int err; | |
2136 | ||
2137 | adapter->intr.msix_entries[0].entry = 0; | |
2138 | err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries, | |
2139 | VMXNET3_LINUX_MAX_MSIX_VECT); | |
2140 | if (!err) { | |
2141 | adapter->intr.num_intrs = 1; | |
2142 | adapter->intr.type = VMXNET3_IT_MSIX; | |
2143 | return; | |
2144 | } | |
2145 | ||
2146 | err = pci_enable_msi(adapter->pdev); | |
2147 | if (!err) { | |
2148 | adapter->intr.num_intrs = 1; | |
2149 | adapter->intr.type = VMXNET3_IT_MSI; | |
2150 | return; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | adapter->intr.type = VMXNET3_IT_INTX; | |
2155 | ||
2156 | /* INT-X related setting */ | |
2157 | adapter->intr.num_intrs = 1; | |
2158 | } | |
2159 | ||
2160 | ||
2161 | static void | |
2162 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
2163 | { | |
2164 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
2165 | pci_disable_msix(adapter->pdev); | |
2166 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
2167 | pci_disable_msi(adapter->pdev); | |
2168 | else | |
2169 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
2170 | } | |
2171 | ||
2172 | ||
2173 | static void | |
2174 | vmxnet3_tx_timeout(struct net_device *netdev) | |
2175 | { | |
2176 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2177 | adapter->tx_timeout_count++; | |
2178 | ||
2179 | printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name); | |
2180 | schedule_work(&adapter->work); | |
2181 | } | |
2182 | ||
2183 | ||
2184 | static void | |
2185 | vmxnet3_reset_work(struct work_struct *data) | |
2186 | { | |
2187 | struct vmxnet3_adapter *adapter; | |
2188 | ||
2189 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
2190 | ||
2191 | /* if another thread is resetting the device, no need to proceed */ | |
2192 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2193 | return; | |
2194 | ||
2195 | /* if the device is closed, we must leave it alone */ | |
2196 | if (netif_running(adapter->netdev)) { | |
2197 | printk(KERN_INFO "%s: resetting\n", adapter->netdev->name); | |
2198 | vmxnet3_quiesce_dev(adapter); | |
2199 | vmxnet3_reset_dev(adapter); | |
2200 | vmxnet3_activate_dev(adapter); | |
2201 | } else { | |
2202 | printk(KERN_INFO "%s: already closed\n", adapter->netdev->name); | |
2203 | } | |
2204 | ||
2205 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2206 | } | |
2207 | ||
2208 | ||
2209 | static int __devinit | |
2210 | vmxnet3_probe_device(struct pci_dev *pdev, | |
2211 | const struct pci_device_id *id) | |
2212 | { | |
2213 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
2214 | .ndo_open = vmxnet3_open, | |
2215 | .ndo_stop = vmxnet3_close, | |
2216 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
2217 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
2218 | .ndo_change_mtu = vmxnet3_change_mtu, | |
2219 | .ndo_get_stats = vmxnet3_get_stats, | |
2220 | .ndo_tx_timeout = vmxnet3_tx_timeout, | |
2221 | .ndo_set_multicast_list = vmxnet3_set_mc, | |
2222 | .ndo_vlan_rx_register = vmxnet3_vlan_rx_register, | |
2223 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, | |
2224 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
2225 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2226 | .ndo_poll_controller = vmxnet3_netpoll, | |
2227 | #endif | |
2228 | }; | |
2229 | int err; | |
2230 | bool dma64 = false; /* stupid gcc */ | |
2231 | u32 ver; | |
2232 | struct net_device *netdev; | |
2233 | struct vmxnet3_adapter *adapter; | |
2234 | u8 mac[ETH_ALEN]; | |
2235 | ||
2236 | netdev = alloc_etherdev(sizeof(struct vmxnet3_adapter)); | |
2237 | if (!netdev) { | |
2238 | printk(KERN_ERR "Failed to alloc ethernet device for adapter " | |
2239 | "%s\n", pci_name(pdev)); | |
2240 | return -ENOMEM; | |
2241 | } | |
2242 | ||
2243 | pci_set_drvdata(pdev, netdev); | |
2244 | adapter = netdev_priv(netdev); | |
2245 | adapter->netdev = netdev; | |
2246 | adapter->pdev = pdev; | |
2247 | ||
2248 | adapter->shared = pci_alloc_consistent(adapter->pdev, | |
2249 | sizeof(struct Vmxnet3_DriverShared), | |
2250 | &adapter->shared_pa); | |
2251 | if (!adapter->shared) { | |
2252 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2253 | pci_name(pdev)); | |
2254 | err = -ENOMEM; | |
2255 | goto err_alloc_shared; | |
2256 | } | |
2257 | ||
2258 | adapter->tqd_start = pci_alloc_consistent(adapter->pdev, | |
2259 | sizeof(struct Vmxnet3_TxQueueDesc) + | |
2260 | sizeof(struct Vmxnet3_RxQueueDesc), | |
2261 | &adapter->queue_desc_pa); | |
2262 | ||
2263 | if (!adapter->tqd_start) { | |
2264 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2265 | pci_name(pdev)); | |
2266 | err = -ENOMEM; | |
2267 | goto err_alloc_queue_desc; | |
2268 | } | |
2269 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start | |
2270 | + 1); | |
2271 | ||
2272 | adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL); | |
2273 | if (adapter->pm_conf == NULL) { | |
2274 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2275 | pci_name(pdev)); | |
2276 | err = -ENOMEM; | |
2277 | goto err_alloc_pm; | |
2278 | } | |
2279 | ||
2280 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); | |
2281 | if (err < 0) | |
2282 | goto err_alloc_pci; | |
2283 | ||
2284 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
2285 | if (ver & 1) { | |
2286 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
2287 | } else { | |
2288 | printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter" | |
2289 | " %s\n", ver, pci_name(pdev)); | |
2290 | err = -EBUSY; | |
2291 | goto err_ver; | |
2292 | } | |
2293 | ||
2294 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
2295 | if (ver & 1) { | |
2296 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
2297 | } else { | |
2298 | printk(KERN_ERR "Incompatible upt version (0x%x) for " | |
2299 | "adapter %s\n", ver, pci_name(pdev)); | |
2300 | err = -EBUSY; | |
2301 | goto err_ver; | |
2302 | } | |
2303 | ||
2304 | vmxnet3_declare_features(adapter, dma64); | |
2305 | ||
2306 | adapter->dev_number = atomic_read(&devices_found); | |
2307 | vmxnet3_alloc_intr_resources(adapter); | |
2308 | ||
2309 | vmxnet3_read_mac_addr(adapter, mac); | |
2310 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
2311 | ||
2312 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
2313 | netdev->watchdog_timeo = 5 * HZ; | |
2314 | vmxnet3_set_ethtool_ops(netdev); | |
2315 | ||
2316 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
2317 | ||
2318 | netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64); | |
2319 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2320 | err = register_netdev(netdev); | |
2321 | ||
2322 | if (err) { | |
2323 | printk(KERN_ERR "Failed to register adapter %s\n", | |
2324 | pci_name(pdev)); | |
2325 | goto err_register; | |
2326 | } | |
2327 | ||
2328 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2329 | atomic_inc(&devices_found); | |
2330 | return 0; | |
2331 | ||
2332 | err_register: | |
2333 | vmxnet3_free_intr_resources(adapter); | |
2334 | err_ver: | |
2335 | vmxnet3_free_pci_resources(adapter); | |
2336 | err_alloc_pci: | |
2337 | kfree(adapter->pm_conf); | |
2338 | err_alloc_pm: | |
2339 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) + | |
2340 | sizeof(struct Vmxnet3_RxQueueDesc), | |
2341 | adapter->tqd_start, adapter->queue_desc_pa); | |
2342 | err_alloc_queue_desc: | |
2343 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
2344 | adapter->shared, adapter->shared_pa); | |
2345 | err_alloc_shared: | |
2346 | pci_set_drvdata(pdev, NULL); | |
2347 | free_netdev(netdev); | |
2348 | return err; | |
2349 | } | |
2350 | ||
2351 | ||
2352 | static void __devexit | |
2353 | vmxnet3_remove_device(struct pci_dev *pdev) | |
2354 | { | |
2355 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2356 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2357 | ||
2358 | flush_scheduled_work(); | |
2359 | ||
2360 | unregister_netdev(netdev); | |
2361 | ||
2362 | vmxnet3_free_intr_resources(adapter); | |
2363 | vmxnet3_free_pci_resources(adapter); | |
2364 | kfree(adapter->pm_conf); | |
2365 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) + | |
2366 | sizeof(struct Vmxnet3_RxQueueDesc), | |
2367 | adapter->tqd_start, adapter->queue_desc_pa); | |
2368 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
2369 | adapter->shared, adapter->shared_pa); | |
2370 | free_netdev(netdev); | |
2371 | } | |
2372 | ||
2373 | ||
2374 | #ifdef CONFIG_PM | |
2375 | ||
2376 | static int | |
2377 | vmxnet3_suspend(struct device *device) | |
2378 | { | |
2379 | struct pci_dev *pdev = to_pci_dev(device); | |
2380 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2381 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2382 | struct Vmxnet3_PMConf *pmConf; | |
2383 | struct ethhdr *ehdr; | |
2384 | struct arphdr *ahdr; | |
2385 | u8 *arpreq; | |
2386 | struct in_device *in_dev; | |
2387 | struct in_ifaddr *ifa; | |
2388 | int i = 0; | |
2389 | ||
2390 | if (!netif_running(netdev)) | |
2391 | return 0; | |
2392 | ||
2393 | vmxnet3_disable_all_intrs(adapter); | |
2394 | vmxnet3_free_irqs(adapter); | |
2395 | vmxnet3_free_intr_resources(adapter); | |
2396 | ||
2397 | netif_device_detach(netdev); | |
2398 | netif_stop_queue(netdev); | |
2399 | ||
2400 | /* Create wake-up filters. */ | |
2401 | pmConf = adapter->pm_conf; | |
2402 | memset(pmConf, 0, sizeof(*pmConf)); | |
2403 | ||
2404 | if (adapter->wol & WAKE_UCAST) { | |
2405 | pmConf->filters[i].patternSize = ETH_ALEN; | |
2406 | pmConf->filters[i].maskSize = 1; | |
2407 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
2408 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
2409 | ||
2410 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
2411 | i++; | |
2412 | } | |
2413 | ||
2414 | if (adapter->wol & WAKE_ARP) { | |
2415 | in_dev = in_dev_get(netdev); | |
2416 | if (!in_dev) | |
2417 | goto skip_arp; | |
2418 | ||
2419 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
2420 | if (!ifa) | |
2421 | goto skip_arp; | |
2422 | ||
2423 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
2424 | sizeof(struct arphdr) + /* ARP header */ | |
2425 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
2426 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
2427 | pmConf->filters[i].maskSize = | |
2428 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
2429 | ||
2430 | /* ETH_P_ARP in Ethernet header. */ | |
2431 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
2432 | ehdr->h_proto = htons(ETH_P_ARP); | |
2433 | ||
2434 | /* ARPOP_REQUEST in ARP header. */ | |
2435 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
2436 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
2437 | arpreq = (u8 *)(ahdr + 1); | |
2438 | ||
2439 | /* The Unicast IPv4 address in 'tip' field. */ | |
2440 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
2441 | *(u32 *)arpreq = ifa->ifa_address; | |
2442 | ||
2443 | /* The mask for the relevant bits. */ | |
2444 | pmConf->filters[i].mask[0] = 0x00; | |
2445 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
2446 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
2447 | pmConf->filters[i].mask[3] = 0x00; | |
2448 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
2449 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
2450 | in_dev_put(in_dev); | |
2451 | ||
2452 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
2453 | i++; | |
2454 | } | |
2455 | ||
2456 | skip_arp: | |
2457 | if (adapter->wol & WAKE_MAGIC) | |
2458 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; | |
2459 | ||
2460 | pmConf->numFilters = i; | |
2461 | ||
2462 | adapter->shared->devRead.pmConfDesc.confVer = 1; | |
2463 | adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf); | |
2464 | adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf); | |
2465 | ||
2466 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2467 | VMXNET3_CMD_UPDATE_PMCFG); | |
2468 | ||
2469 | pci_save_state(pdev); | |
2470 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
2471 | adapter->wol); | |
2472 | pci_disable_device(pdev); | |
2473 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
2474 | ||
2475 | return 0; | |
2476 | } | |
2477 | ||
2478 | ||
2479 | static int | |
2480 | vmxnet3_resume(struct device *device) | |
2481 | { | |
2482 | int err; | |
2483 | struct pci_dev *pdev = to_pci_dev(device); | |
2484 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2485 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2486 | struct Vmxnet3_PMConf *pmConf; | |
2487 | ||
2488 | if (!netif_running(netdev)) | |
2489 | return 0; | |
2490 | ||
2491 | /* Destroy wake-up filters. */ | |
2492 | pmConf = adapter->pm_conf; | |
2493 | memset(pmConf, 0, sizeof(*pmConf)); | |
2494 | ||
2495 | adapter->shared->devRead.pmConfDesc.confVer = 1; | |
2496 | adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf); | |
2497 | adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf); | |
2498 | ||
2499 | netif_device_attach(netdev); | |
2500 | pci_set_power_state(pdev, PCI_D0); | |
2501 | pci_restore_state(pdev); | |
2502 | err = pci_enable_device_mem(pdev); | |
2503 | if (err != 0) | |
2504 | return err; | |
2505 | ||
2506 | pci_enable_wake(pdev, PCI_D0, 0); | |
2507 | ||
2508 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2509 | VMXNET3_CMD_UPDATE_PMCFG); | |
2510 | vmxnet3_alloc_intr_resources(adapter); | |
2511 | vmxnet3_request_irqs(adapter); | |
2512 | vmxnet3_enable_all_intrs(adapter); | |
2513 | ||
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | static struct dev_pm_ops vmxnet3_pm_ops = { | |
2518 | .suspend = vmxnet3_suspend, | |
2519 | .resume = vmxnet3_resume, | |
2520 | }; | |
2521 | #endif | |
2522 | ||
2523 | static struct pci_driver vmxnet3_driver = { | |
2524 | .name = vmxnet3_driver_name, | |
2525 | .id_table = vmxnet3_pciid_table, | |
2526 | .probe = vmxnet3_probe_device, | |
2527 | .remove = __devexit_p(vmxnet3_remove_device), | |
2528 | #ifdef CONFIG_PM | |
2529 | .driver.pm = &vmxnet3_pm_ops, | |
2530 | #endif | |
2531 | }; | |
2532 | ||
2533 | ||
2534 | static int __init | |
2535 | vmxnet3_init_module(void) | |
2536 | { | |
2537 | printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC, | |
2538 | VMXNET3_DRIVER_VERSION_REPORT); | |
2539 | return pci_register_driver(&vmxnet3_driver); | |
2540 | } | |
2541 | ||
2542 | module_init(vmxnet3_init_module); | |
2543 | ||
2544 | ||
2545 | static void | |
2546 | vmxnet3_exit_module(void) | |
2547 | { | |
2548 | pci_unregister_driver(&vmxnet3_driver); | |
2549 | } | |
2550 | ||
2551 | module_exit(vmxnet3_exit_module); | |
2552 | ||
2553 | MODULE_AUTHOR("VMware, Inc."); | |
2554 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
2555 | MODULE_LICENSE("GPL v2"); | |
2556 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |