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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 <linux/module.h> | |
28 | #include <net/ip6_checksum.h> | |
29 | ||
30 | #include "vmxnet3_int.h" | |
31 | ||
32 | char vmxnet3_driver_name[] = "vmxnet3"; | |
33 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
34 | ||
35 | /* | |
36 | * PCI Device ID Table | |
37 | * Last entry must be all 0s | |
38 | */ | |
39 | static const struct pci_device_id vmxnet3_pciid_table[] = { | |
40 | {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)}, | |
41 | {0} | |
42 | }; | |
43 | ||
44 | MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table); | |
45 | ||
46 | static int enable_mq = 1; | |
47 | ||
48 | static void | |
49 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac); | |
50 | ||
51 | /* | |
52 | * Enable/Disable the given intr | |
53 | */ | |
54 | static void | |
55 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
56 | { | |
57 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
58 | } | |
59 | ||
60 | ||
61 | static void | |
62 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
63 | { | |
64 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
65 | } | |
66 | ||
67 | ||
68 | /* | |
69 | * Enable/Disable all intrs used by the device | |
70 | */ | |
71 | static void | |
72 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
73 | { | |
74 | int i; | |
75 | ||
76 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
77 | vmxnet3_enable_intr(adapter, i); | |
78 | adapter->shared->devRead.intrConf.intrCtrl &= | |
79 | cpu_to_le32(~VMXNET3_IC_DISABLE_ALL); | |
80 | } | |
81 | ||
82 | ||
83 | static void | |
84 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
85 | { | |
86 | int i; | |
87 | ||
88 | adapter->shared->devRead.intrConf.intrCtrl |= | |
89 | cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
90 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
91 | vmxnet3_disable_intr(adapter, i); | |
92 | } | |
93 | ||
94 | ||
95 | static void | |
96 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
97 | { | |
98 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
99 | } | |
100 | ||
101 | ||
102 | static bool | |
103 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
104 | { | |
105 | return tq->stopped; | |
106 | } | |
107 | ||
108 | ||
109 | static void | |
110 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
111 | { | |
112 | tq->stopped = false; | |
113 | netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue); | |
114 | } | |
115 | ||
116 | ||
117 | static void | |
118 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
119 | { | |
120 | tq->stopped = false; | |
121 | netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue)); | |
122 | } | |
123 | ||
124 | ||
125 | static void | |
126 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
127 | { | |
128 | tq->stopped = true; | |
129 | tq->num_stop++; | |
130 | netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue)); | |
131 | } | |
132 | ||
133 | ||
134 | /* | |
135 | * Check the link state. This may start or stop the tx queue. | |
136 | */ | |
137 | static void | |
138 | vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue) | |
139 | { | |
140 | u32 ret; | |
141 | int i; | |
142 | unsigned long flags; | |
143 | ||
144 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
145 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); | |
146 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
147 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
148 | ||
149 | adapter->link_speed = ret >> 16; | |
150 | if (ret & 1) { /* Link is up. */ | |
151 | netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n", | |
152 | adapter->link_speed); | |
153 | netif_carrier_on(adapter->netdev); | |
154 | ||
155 | if (affectTxQueue) { | |
156 | for (i = 0; i < adapter->num_tx_queues; i++) | |
157 | vmxnet3_tq_start(&adapter->tx_queue[i], | |
158 | adapter); | |
159 | } | |
160 | } else { | |
161 | netdev_info(adapter->netdev, "NIC Link is Down\n"); | |
162 | netif_carrier_off(adapter->netdev); | |
163 | ||
164 | if (affectTxQueue) { | |
165 | for (i = 0; i < adapter->num_tx_queues; i++) | |
166 | vmxnet3_tq_stop(&adapter->tx_queue[i], adapter); | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | static void | |
172 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
173 | { | |
174 | int i; | |
175 | unsigned long flags; | |
176 | u32 events = le32_to_cpu(adapter->shared->ecr); | |
177 | if (!events) | |
178 | return; | |
179 | ||
180 | vmxnet3_ack_events(adapter, events); | |
181 | ||
182 | /* Check if link state has changed */ | |
183 | if (events & VMXNET3_ECR_LINK) | |
184 | vmxnet3_check_link(adapter, true); | |
185 | ||
186 | /* Check if there is an error on xmit/recv queues */ | |
187 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
188 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
189 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
190 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
191 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
192 | ||
193 | for (i = 0; i < adapter->num_tx_queues; i++) | |
194 | if (adapter->tqd_start[i].status.stopped) | |
195 | dev_err(&adapter->netdev->dev, | |
196 | "%s: tq[%d] error 0x%x\n", | |
197 | adapter->netdev->name, i, le32_to_cpu( | |
198 | adapter->tqd_start[i].status.error)); | |
199 | for (i = 0; i < adapter->num_rx_queues; i++) | |
200 | if (adapter->rqd_start[i].status.stopped) | |
201 | dev_err(&adapter->netdev->dev, | |
202 | "%s: rq[%d] error 0x%x\n", | |
203 | adapter->netdev->name, i, | |
204 | adapter->rqd_start[i].status.error); | |
205 | ||
206 | schedule_work(&adapter->work); | |
207 | } | |
208 | } | |
209 | ||
210 | #ifdef __BIG_ENDIAN_BITFIELD | |
211 | /* | |
212 | * The device expects the bitfields in shared structures to be written in | |
213 | * little endian. When CPU is big endian, the following routines are used to | |
214 | * correctly read and write into ABI. | |
215 | * The general technique used here is : double word bitfields are defined in | |
216 | * opposite order for big endian architecture. Then before reading them in | |
217 | * driver the complete double word is translated using le32_to_cpu. Similarly | |
218 | * After the driver writes into bitfields, cpu_to_le32 is used to translate the | |
219 | * double words into required format. | |
220 | * In order to avoid touching bits in shared structure more than once, temporary | |
221 | * descriptors are used. These are passed as srcDesc to following functions. | |
222 | */ | |
223 | static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc, | |
224 | struct Vmxnet3_RxDesc *dstDesc) | |
225 | { | |
226 | u32 *src = (u32 *)srcDesc + 2; | |
227 | u32 *dst = (u32 *)dstDesc + 2; | |
228 | dstDesc->addr = le64_to_cpu(srcDesc->addr); | |
229 | *dst = le32_to_cpu(*src); | |
230 | dstDesc->ext1 = le32_to_cpu(srcDesc->ext1); | |
231 | } | |
232 | ||
233 | static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc, | |
234 | struct Vmxnet3_TxDesc *dstDesc) | |
235 | { | |
236 | int i; | |
237 | u32 *src = (u32 *)(srcDesc + 1); | |
238 | u32 *dst = (u32 *)(dstDesc + 1); | |
239 | ||
240 | /* Working backwards so that the gen bit is set at the end. */ | |
241 | for (i = 2; i > 0; i--) { | |
242 | src--; | |
243 | dst--; | |
244 | *dst = cpu_to_le32(*src); | |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc, | |
250 | struct Vmxnet3_RxCompDesc *dstDesc) | |
251 | { | |
252 | int i = 0; | |
253 | u32 *src = (u32 *)srcDesc; | |
254 | u32 *dst = (u32 *)dstDesc; | |
255 | for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) { | |
256 | *dst = le32_to_cpu(*src); | |
257 | src++; | |
258 | dst++; | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* Used to read bitfield values from double words. */ | |
264 | static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size) | |
265 | { | |
266 | u32 temp = le32_to_cpu(*bitfield); | |
267 | u32 mask = ((1 << size) - 1) << pos; | |
268 | temp &= mask; | |
269 | temp >>= pos; | |
270 | return temp; | |
271 | } | |
272 | ||
273 | ||
274 | ||
275 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
276 | ||
277 | #ifdef __BIG_ENDIAN_BITFIELD | |
278 | ||
279 | # define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \ | |
280 | txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \ | |
281 | VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE) | |
282 | # define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \ | |
283 | txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \ | |
284 | VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE) | |
285 | # define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \ | |
286 | VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \ | |
287 | VMXNET3_TCD_GEN_SIZE) | |
288 | # define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \ | |
289 | VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE) | |
290 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \ | |
291 | (dstrcd) = (tmp); \ | |
292 | vmxnet3_RxCompToCPU((rcd), (tmp)); \ | |
293 | } while (0) | |
294 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \ | |
295 | (dstrxd) = (tmp); \ | |
296 | vmxnet3_RxDescToCPU((rxd), (tmp)); \ | |
297 | } while (0) | |
298 | ||
299 | #else | |
300 | ||
301 | # define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen) | |
302 | # define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop) | |
303 | # define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen) | |
304 | # define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx) | |
305 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd) | |
306 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd) | |
307 | ||
308 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
309 | ||
310 | ||
311 | static void | |
312 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
313 | struct pci_dev *pdev) | |
314 | { | |
315 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
316 | dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len, | |
317 | PCI_DMA_TODEVICE); | |
318 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
319 | dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len, | |
320 | PCI_DMA_TODEVICE); | |
321 | else | |
322 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
323 | ||
324 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
325 | } | |
326 | ||
327 | ||
328 | static int | |
329 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
330 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
331 | { | |
332 | struct sk_buff *skb; | |
333 | int entries = 0; | |
334 | ||
335 | /* no out of order completion */ | |
336 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
337 | BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1); | |
338 | ||
339 | skb = tq->buf_info[eop_idx].skb; | |
340 | BUG_ON(skb == NULL); | |
341 | tq->buf_info[eop_idx].skb = NULL; | |
342 | ||
343 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
344 | ||
345 | while (tq->tx_ring.next2comp != eop_idx) { | |
346 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
347 | pdev); | |
348 | ||
349 | /* update next2comp w/o tx_lock. Since we are marking more, | |
350 | * instead of less, tx ring entries avail, the worst case is | |
351 | * that the tx routine incorrectly re-queues a pkt due to | |
352 | * insufficient tx ring entries. | |
353 | */ | |
354 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
355 | entries++; | |
356 | } | |
357 | ||
358 | dev_kfree_skb_any(skb); | |
359 | return entries; | |
360 | } | |
361 | ||
362 | ||
363 | static int | |
364 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
365 | struct vmxnet3_adapter *adapter) | |
366 | { | |
367 | int completed = 0; | |
368 | union Vmxnet3_GenericDesc *gdesc; | |
369 | ||
370 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
371 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { | |
372 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( | |
373 | &gdesc->tcd), tq, adapter->pdev, | |
374 | adapter); | |
375 | ||
376 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
377 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
378 | } | |
379 | ||
380 | if (completed) { | |
381 | spin_lock(&tq->tx_lock); | |
382 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
383 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
384 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
385 | netif_carrier_ok(adapter->netdev))) { | |
386 | vmxnet3_tq_wake(tq, adapter); | |
387 | } | |
388 | spin_unlock(&tq->tx_lock); | |
389 | } | |
390 | return completed; | |
391 | } | |
392 | ||
393 | ||
394 | static void | |
395 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
396 | struct vmxnet3_adapter *adapter) | |
397 | { | |
398 | int i; | |
399 | ||
400 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
401 | struct vmxnet3_tx_buf_info *tbi; | |
402 | ||
403 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
404 | ||
405 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
406 | if (tbi->skb) { | |
407 | dev_kfree_skb_any(tbi->skb); | |
408 | tbi->skb = NULL; | |
409 | } | |
410 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
411 | } | |
412 | ||
413 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
414 | for (i = 0; i < tq->tx_ring.size; i++) { | |
415 | BUG_ON(tq->buf_info[i].skb != NULL || | |
416 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
417 | } | |
418 | ||
419 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
420 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
421 | ||
422 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
423 | tq->comp_ring.next2proc = 0; | |
424 | } | |
425 | ||
426 | ||
427 | static void | |
428 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, | |
429 | struct vmxnet3_adapter *adapter) | |
430 | { | |
431 | if (tq->tx_ring.base) { | |
432 | dma_free_coherent(&adapter->pdev->dev, tq->tx_ring.size * | |
433 | sizeof(struct Vmxnet3_TxDesc), | |
434 | tq->tx_ring.base, tq->tx_ring.basePA); | |
435 | tq->tx_ring.base = NULL; | |
436 | } | |
437 | if (tq->data_ring.base) { | |
438 | dma_free_coherent(&adapter->pdev->dev, tq->data_ring.size * | |
439 | sizeof(struct Vmxnet3_TxDataDesc), | |
440 | tq->data_ring.base, tq->data_ring.basePA); | |
441 | tq->data_ring.base = NULL; | |
442 | } | |
443 | if (tq->comp_ring.base) { | |
444 | dma_free_coherent(&adapter->pdev->dev, tq->comp_ring.size * | |
445 | sizeof(struct Vmxnet3_TxCompDesc), | |
446 | tq->comp_ring.base, tq->comp_ring.basePA); | |
447 | tq->comp_ring.base = NULL; | |
448 | } | |
449 | if (tq->buf_info) { | |
450 | dma_free_coherent(&adapter->pdev->dev, | |
451 | tq->tx_ring.size * sizeof(tq->buf_info[0]), | |
452 | tq->buf_info, tq->buf_info_pa); | |
453 | tq->buf_info = NULL; | |
454 | } | |
455 | } | |
456 | ||
457 | ||
458 | /* Destroy all tx queues */ | |
459 | void | |
460 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
461 | { | |
462 | int i; | |
463 | ||
464 | for (i = 0; i < adapter->num_tx_queues; i++) | |
465 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
466 | } | |
467 | ||
468 | ||
469 | static void | |
470 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
471 | struct vmxnet3_adapter *adapter) | |
472 | { | |
473 | int i; | |
474 | ||
475 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
476 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
477 | sizeof(struct Vmxnet3_TxDesc)); | |
478 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
479 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
480 | ||
481 | memset(tq->data_ring.base, 0, tq->data_ring.size * | |
482 | sizeof(struct Vmxnet3_TxDataDesc)); | |
483 | ||
484 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
485 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
486 | sizeof(struct Vmxnet3_TxCompDesc)); | |
487 | tq->comp_ring.next2proc = 0; | |
488 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
489 | ||
490 | /* reset the bookkeeping data */ | |
491 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
492 | for (i = 0; i < tq->tx_ring.size; i++) | |
493 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
494 | ||
495 | /* stats are not reset */ | |
496 | } | |
497 | ||
498 | ||
499 | static int | |
500 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
501 | struct vmxnet3_adapter *adapter) | |
502 | { | |
503 | size_t sz; | |
504 | ||
505 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || | |
506 | tq->comp_ring.base || tq->buf_info); | |
507 | ||
508 | tq->tx_ring.base = dma_alloc_coherent(&adapter->pdev->dev, | |
509 | tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc), | |
510 | &tq->tx_ring.basePA, GFP_KERNEL); | |
511 | if (!tq->tx_ring.base) { | |
512 | netdev_err(adapter->netdev, "failed to allocate tx ring\n"); | |
513 | goto err; | |
514 | } | |
515 | ||
516 | tq->data_ring.base = dma_alloc_coherent(&adapter->pdev->dev, | |
517 | tq->data_ring.size * sizeof(struct Vmxnet3_TxDataDesc), | |
518 | &tq->data_ring.basePA, GFP_KERNEL); | |
519 | if (!tq->data_ring.base) { | |
520 | netdev_err(adapter->netdev, "failed to allocate data ring\n"); | |
521 | goto err; | |
522 | } | |
523 | ||
524 | tq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, | |
525 | tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc), | |
526 | &tq->comp_ring.basePA, GFP_KERNEL); | |
527 | if (!tq->comp_ring.base) { | |
528 | netdev_err(adapter->netdev, "failed to allocate tx comp ring\n"); | |
529 | goto err; | |
530 | } | |
531 | ||
532 | sz = tq->tx_ring.size * sizeof(tq->buf_info[0]); | |
533 | tq->buf_info = dma_zalloc_coherent(&adapter->pdev->dev, sz, | |
534 | &tq->buf_info_pa, GFP_KERNEL); | |
535 | if (!tq->buf_info) | |
536 | goto err; | |
537 | ||
538 | return 0; | |
539 | ||
540 | err: | |
541 | vmxnet3_tq_destroy(tq, adapter); | |
542 | return -ENOMEM; | |
543 | } | |
544 | ||
545 | static void | |
546 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
547 | { | |
548 | int i; | |
549 | ||
550 | for (i = 0; i < adapter->num_tx_queues; i++) | |
551 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
552 | } | |
553 | ||
554 | /* | |
555 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
556 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
557 | * are allocated or allocation fails | |
558 | */ | |
559 | ||
560 | static int | |
561 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
562 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
563 | { | |
564 | int num_allocated = 0; | |
565 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
566 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
567 | u32 val; | |
568 | ||
569 | while (num_allocated <= num_to_alloc) { | |
570 | struct vmxnet3_rx_buf_info *rbi; | |
571 | union Vmxnet3_GenericDesc *gd; | |
572 | ||
573 | rbi = rbi_base + ring->next2fill; | |
574 | gd = ring->base + ring->next2fill; | |
575 | ||
576 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
577 | if (rbi->skb == NULL) { | |
578 | rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev, | |
579 | rbi->len, | |
580 | GFP_KERNEL); | |
581 | if (unlikely(rbi->skb == NULL)) { | |
582 | rq->stats.rx_buf_alloc_failure++; | |
583 | break; | |
584 | } | |
585 | ||
586 | rbi->dma_addr = dma_map_single( | |
587 | &adapter->pdev->dev, | |
588 | rbi->skb->data, rbi->len, | |
589 | PCI_DMA_FROMDEVICE); | |
590 | if (dma_mapping_error(&adapter->pdev->dev, | |
591 | rbi->dma_addr)) { | |
592 | dev_kfree_skb_any(rbi->skb); | |
593 | rq->stats.rx_buf_alloc_failure++; | |
594 | break; | |
595 | } | |
596 | } else { | |
597 | /* rx buffer skipped by the device */ | |
598 | } | |
599 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
600 | } else { | |
601 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
602 | rbi->len != PAGE_SIZE); | |
603 | ||
604 | if (rbi->page == NULL) { | |
605 | rbi->page = alloc_page(GFP_ATOMIC); | |
606 | if (unlikely(rbi->page == NULL)) { | |
607 | rq->stats.rx_buf_alloc_failure++; | |
608 | break; | |
609 | } | |
610 | rbi->dma_addr = dma_map_page( | |
611 | &adapter->pdev->dev, | |
612 | rbi->page, 0, PAGE_SIZE, | |
613 | PCI_DMA_FROMDEVICE); | |
614 | if (dma_mapping_error(&adapter->pdev->dev, | |
615 | rbi->dma_addr)) { | |
616 | put_page(rbi->page); | |
617 | rq->stats.rx_buf_alloc_failure++; | |
618 | break; | |
619 | } | |
620 | } else { | |
621 | /* rx buffers skipped by the device */ | |
622 | } | |
623 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
624 | } | |
625 | ||
626 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); | |
627 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) | |
628 | | val | rbi->len); | |
629 | ||
630 | /* Fill the last buffer but dont mark it ready, or else the | |
631 | * device will think that the queue is full */ | |
632 | if (num_allocated == num_to_alloc) | |
633 | break; | |
634 | ||
635 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
636 | num_allocated++; | |
637 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
638 | } | |
639 | ||
640 | netdev_dbg(adapter->netdev, | |
641 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n", | |
642 | num_allocated, ring->next2fill, ring->next2comp); | |
643 | ||
644 | /* so that the device can distinguish a full ring and an empty ring */ | |
645 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
646 | ||
647 | return num_allocated; | |
648 | } | |
649 | ||
650 | ||
651 | static void | |
652 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
653 | struct vmxnet3_rx_buf_info *rbi) | |
654 | { | |
655 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
656 | skb_shinfo(skb)->nr_frags; | |
657 | ||
658 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
659 | ||
660 | __skb_frag_set_page(frag, rbi->page); | |
661 | frag->page_offset = 0; | |
662 | skb_frag_size_set(frag, rcd->len); | |
663 | skb->data_len += rcd->len; | |
664 | skb->truesize += PAGE_SIZE; | |
665 | skb_shinfo(skb)->nr_frags++; | |
666 | } | |
667 | ||
668 | ||
669 | static int | |
670 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
671 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
672 | struct vmxnet3_adapter *adapter) | |
673 | { | |
674 | u32 dw2, len; | |
675 | unsigned long buf_offset; | |
676 | int i; | |
677 | union Vmxnet3_GenericDesc *gdesc; | |
678 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
679 | ||
680 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
681 | ||
682 | /* use the previous gen bit for the SOP desc */ | |
683 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
684 | ||
685 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
686 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
687 | ||
688 | /* no need to map the buffer if headers are copied */ | |
689 | if (ctx->copy_size) { | |
690 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + | |
691 | tq->tx_ring.next2fill * | |
692 | sizeof(struct Vmxnet3_TxDataDesc)); | |
693 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); | |
694 | ctx->sop_txd->dword[3] = 0; | |
695 | ||
696 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
697 | tbi->map_type = VMXNET3_MAP_NONE; | |
698 | ||
699 | netdev_dbg(adapter->netdev, | |
700 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
701 | tq->tx_ring.next2fill, | |
702 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
703 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); | |
704 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
705 | ||
706 | /* use the right gen for non-SOP desc */ | |
707 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
708 | } | |
709 | ||
710 | /* linear part can use multiple tx desc if it's big */ | |
711 | len = skb_headlen(skb) - ctx->copy_size; | |
712 | buf_offset = ctx->copy_size; | |
713 | while (len) { | |
714 | u32 buf_size; | |
715 | ||
716 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
717 | buf_size = len; | |
718 | dw2 |= len; | |
719 | } else { | |
720 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
721 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
722 | } | |
723 | ||
724 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
725 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
726 | tbi->dma_addr = dma_map_single(&adapter->pdev->dev, | |
727 | skb->data + buf_offset, buf_size, | |
728 | PCI_DMA_TODEVICE); | |
729 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) | |
730 | return -EFAULT; | |
731 | ||
732 | tbi->len = buf_size; | |
733 | ||
734 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
735 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
736 | ||
737 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); | |
738 | gdesc->dword[2] = cpu_to_le32(dw2); | |
739 | gdesc->dword[3] = 0; | |
740 | ||
741 | netdev_dbg(adapter->netdev, | |
742 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
743 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), | |
744 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
745 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
746 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
747 | ||
748 | len -= buf_size; | |
749 | buf_offset += buf_size; | |
750 | } | |
751 | ||
752 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
753 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
754 | u32 buf_size; | |
755 | ||
756 | buf_offset = 0; | |
757 | len = skb_frag_size(frag); | |
758 | while (len) { | |
759 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
760 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
761 | buf_size = len; | |
762 | dw2 |= len; | |
763 | } else { | |
764 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
765 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
766 | } | |
767 | tbi->map_type = VMXNET3_MAP_PAGE; | |
768 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
769 | buf_offset, buf_size, | |
770 | DMA_TO_DEVICE); | |
771 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) | |
772 | return -EFAULT; | |
773 | ||
774 | tbi->len = buf_size; | |
775 | ||
776 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
777 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
778 | ||
779 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); | |
780 | gdesc->dword[2] = cpu_to_le32(dw2); | |
781 | gdesc->dword[3] = 0; | |
782 | ||
783 | netdev_dbg(adapter->netdev, | |
784 | "txd[%u]: 0x%llx %u %u\n", | |
785 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), | |
786 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
787 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
788 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
789 | ||
790 | len -= buf_size; | |
791 | buf_offset += buf_size; | |
792 | } | |
793 | } | |
794 | ||
795 | ctx->eop_txd = gdesc; | |
796 | ||
797 | /* set the last buf_info for the pkt */ | |
798 | tbi->skb = skb; | |
799 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | ||
805 | /* Init all tx queues */ | |
806 | static void | |
807 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
808 | { | |
809 | int i; | |
810 | ||
811 | for (i = 0; i < adapter->num_tx_queues; i++) | |
812 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
813 | } | |
814 | ||
815 | ||
816 | /* | |
817 | * parse and copy relevant protocol headers: | |
818 | * For a tso pkt, relevant headers are L2/3/4 including options | |
819 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
820 | * if it's a TCP/UDP pkt | |
821 | * | |
822 | * Returns: | |
823 | * -1: error happens during parsing | |
824 | * 0: protocol headers parsed, but too big to be copied | |
825 | * 1: protocol headers parsed and copied | |
826 | * | |
827 | * Other effects: | |
828 | * 1. related *ctx fields are updated. | |
829 | * 2. ctx->copy_size is # of bytes copied | |
830 | * 3. the portion copied is guaranteed to be in the linear part | |
831 | * | |
832 | */ | |
833 | static int | |
834 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
835 | struct vmxnet3_tx_ctx *ctx, | |
836 | struct vmxnet3_adapter *adapter) | |
837 | { | |
838 | struct Vmxnet3_TxDataDesc *tdd; | |
839 | u8 protocol = 0; | |
840 | ||
841 | if (ctx->mss) { /* TSO */ | |
842 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); | |
843 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
844 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; | |
845 | } else { | |
846 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
847 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); | |
848 | ||
849 | if (ctx->ipv4) { | |
850 | const struct iphdr *iph = ip_hdr(skb); | |
851 | ||
852 | protocol = iph->protocol; | |
853 | } else if (ctx->ipv6) { | |
854 | const struct ipv6hdr *ipv6h = ipv6_hdr(skb); | |
855 | ||
856 | protocol = ipv6h->nexthdr; | |
857 | } | |
858 | ||
859 | switch (protocol) { | |
860 | case IPPROTO_TCP: | |
861 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
862 | break; | |
863 | case IPPROTO_UDP: | |
864 | ctx->l4_hdr_size = sizeof(struct udphdr); | |
865 | break; | |
866 | default: | |
867 | ctx->l4_hdr_size = 0; | |
868 | break; | |
869 | } | |
870 | ||
871 | ctx->copy_size = min(ctx->eth_ip_hdr_size + | |
872 | ctx->l4_hdr_size, skb->len); | |
873 | } else { | |
874 | ctx->eth_ip_hdr_size = 0; | |
875 | ctx->l4_hdr_size = 0; | |
876 | /* copy as much as allowed */ | |
877 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
878 | , skb_headlen(skb)); | |
879 | } | |
880 | ||
881 | if (skb->len <= VMXNET3_HDR_COPY_SIZE) | |
882 | ctx->copy_size = skb->len; | |
883 | ||
884 | /* make sure headers are accessible directly */ | |
885 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
886 | goto err; | |
887 | } | |
888 | ||
889 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
890 | tq->stats.oversized_hdr++; | |
891 | ctx->copy_size = 0; | |
892 | return 0; | |
893 | } | |
894 | ||
895 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
896 | ||
897 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
898 | netdev_dbg(adapter->netdev, | |
899 | "copy %u bytes to dataRing[%u]\n", | |
900 | ctx->copy_size, tq->tx_ring.next2fill); | |
901 | return 1; | |
902 | ||
903 | err: | |
904 | return -1; | |
905 | } | |
906 | ||
907 | ||
908 | static void | |
909 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
910 | struct vmxnet3_tx_ctx *ctx) | |
911 | { | |
912 | struct tcphdr *tcph = tcp_hdr(skb); | |
913 | ||
914 | if (ctx->ipv4) { | |
915 | struct iphdr *iph = ip_hdr(skb); | |
916 | ||
917 | iph->check = 0; | |
918 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
919 | IPPROTO_TCP, 0); | |
920 | } else if (ctx->ipv6) { | |
921 | struct ipv6hdr *iph = ipv6_hdr(skb); | |
922 | ||
923 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, | |
924 | IPPROTO_TCP, 0); | |
925 | } | |
926 | } | |
927 | ||
928 | static int txd_estimate(const struct sk_buff *skb) | |
929 | { | |
930 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
931 | int i; | |
932 | ||
933 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
934 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
935 | ||
936 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
937 | } | |
938 | return count; | |
939 | } | |
940 | ||
941 | /* | |
942 | * Transmits a pkt thru a given tq | |
943 | * Returns: | |
944 | * NETDEV_TX_OK: descriptors are setup successfully | |
945 | * NETDEV_TX_OK: error occurred, the pkt is dropped | |
946 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped | |
947 | * | |
948 | * Side-effects: | |
949 | * 1. tx ring may be changed | |
950 | * 2. tq stats may be updated accordingly | |
951 | * 3. shared->txNumDeferred may be updated | |
952 | */ | |
953 | ||
954 | static int | |
955 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
956 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
957 | { | |
958 | int ret; | |
959 | u32 count; | |
960 | unsigned long flags; | |
961 | struct vmxnet3_tx_ctx ctx; | |
962 | union Vmxnet3_GenericDesc *gdesc; | |
963 | #ifdef __BIG_ENDIAN_BITFIELD | |
964 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
965 | union Vmxnet3_GenericDesc tempTxDesc; | |
966 | #endif | |
967 | ||
968 | count = txd_estimate(skb); | |
969 | ||
970 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); | |
971 | ctx.ipv6 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IPV6)); | |
972 | ||
973 | ctx.mss = skb_shinfo(skb)->gso_size; | |
974 | if (ctx.mss) { | |
975 | if (skb_header_cloned(skb)) { | |
976 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
977 | GFP_ATOMIC) != 0)) { | |
978 | tq->stats.drop_tso++; | |
979 | goto drop_pkt; | |
980 | } | |
981 | tq->stats.copy_skb_header++; | |
982 | } | |
983 | vmxnet3_prepare_tso(skb, &ctx); | |
984 | } else { | |
985 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
986 | ||
987 | /* non-tso pkts must not use more than | |
988 | * VMXNET3_MAX_TXD_PER_PKT entries | |
989 | */ | |
990 | if (skb_linearize(skb) != 0) { | |
991 | tq->stats.drop_too_many_frags++; | |
992 | goto drop_pkt; | |
993 | } | |
994 | tq->stats.linearized++; | |
995 | ||
996 | /* recalculate the # of descriptors to use */ | |
997 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
998 | } | |
999 | } | |
1000 | ||
1001 | spin_lock_irqsave(&tq->tx_lock, flags); | |
1002 | ||
1003 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
1004 | tq->stats.tx_ring_full++; | |
1005 | netdev_dbg(adapter->netdev, | |
1006 | "tx queue stopped on %s, next2comp %u" | |
1007 | " next2fill %u\n", adapter->netdev->name, | |
1008 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
1009 | ||
1010 | vmxnet3_tq_stop(tq, adapter); | |
1011 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1012 | return NETDEV_TX_BUSY; | |
1013 | } | |
1014 | ||
1015 | ||
1016 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); | |
1017 | if (ret >= 0) { | |
1018 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
1019 | /* hdrs parsed, check against other limits */ | |
1020 | if (ctx.mss) { | |
1021 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
1022 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
1023 | goto hdr_too_big; | |
1024 | } | |
1025 | } else { | |
1026 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1027 | if (unlikely(ctx.eth_ip_hdr_size + | |
1028 | skb->csum_offset > | |
1029 | VMXNET3_MAX_CSUM_OFFSET)) { | |
1030 | goto hdr_too_big; | |
1031 | } | |
1032 | } | |
1033 | } | |
1034 | } else { | |
1035 | tq->stats.drop_hdr_inspect_err++; | |
1036 | goto unlock_drop_pkt; | |
1037 | } | |
1038 | ||
1039 | /* fill tx descs related to addr & len */ | |
1040 | if (vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter)) | |
1041 | goto unlock_drop_pkt; | |
1042 | ||
1043 | /* setup the EOP desc */ | |
1044 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); | |
1045 | ||
1046 | /* setup the SOP desc */ | |
1047 | #ifdef __BIG_ENDIAN_BITFIELD | |
1048 | gdesc = &tempTxDesc; | |
1049 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1050 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1051 | #else | |
1052 | gdesc = ctx.sop_txd; | |
1053 | #endif | |
1054 | if (ctx.mss) { | |
1055 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1056 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1057 | gdesc->txd.msscof = ctx.mss; | |
1058 | le32_add_cpu(&tq->shared->txNumDeferred, (skb->len - | |
1059 | gdesc->txd.hlen + ctx.mss - 1) / ctx.mss); | |
1060 | } else { | |
1061 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1062 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1063 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1064 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1065 | skb->csum_offset; | |
1066 | } else { | |
1067 | gdesc->txd.om = 0; | |
1068 | gdesc->txd.msscof = 0; | |
1069 | } | |
1070 | le32_add_cpu(&tq->shared->txNumDeferred, 1); | |
1071 | } | |
1072 | ||
1073 | if (skb_vlan_tag_present(skb)) { | |
1074 | gdesc->txd.ti = 1; | |
1075 | gdesc->txd.tci = skb_vlan_tag_get(skb); | |
1076 | } | |
1077 | ||
1078 | /* finally flips the GEN bit of the SOP desc. */ | |
1079 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1080 | VMXNET3_TXD_GEN); | |
1081 | #ifdef __BIG_ENDIAN_BITFIELD | |
1082 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1083 | * place. | |
1084 | */ | |
1085 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1086 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1087 | gdesc = ctx.sop_txd; | |
1088 | #endif | |
1089 | netdev_dbg(adapter->netdev, | |
1090 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", | |
1091 | (u32)(ctx.sop_txd - | |
1092 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), | |
1093 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
1094 | ||
1095 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1096 | ||
1097 | if (le32_to_cpu(tq->shared->txNumDeferred) >= | |
1098 | le32_to_cpu(tq->shared->txThreshold)) { | |
1099 | tq->shared->txNumDeferred = 0; | |
1100 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1101 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
1102 | tq->tx_ring.next2fill); | |
1103 | } | |
1104 | ||
1105 | return NETDEV_TX_OK; | |
1106 | ||
1107 | hdr_too_big: | |
1108 | tq->stats.drop_oversized_hdr++; | |
1109 | unlock_drop_pkt: | |
1110 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1111 | drop_pkt: | |
1112 | tq->stats.drop_total++; | |
1113 | dev_kfree_skb_any(skb); | |
1114 | return NETDEV_TX_OK; | |
1115 | } | |
1116 | ||
1117 | ||
1118 | static netdev_tx_t | |
1119 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1120 | { | |
1121 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1122 | ||
1123 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); | |
1124 | return vmxnet3_tq_xmit(skb, | |
1125 | &adapter->tx_queue[skb->queue_mapping], | |
1126 | adapter, netdev); | |
1127 | } | |
1128 | ||
1129 | ||
1130 | static void | |
1131 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1132 | struct sk_buff *skb, | |
1133 | union Vmxnet3_GenericDesc *gdesc) | |
1134 | { | |
1135 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { | |
1136 | /* typical case: TCP/UDP over IP and both csums are correct */ | |
1137 | if ((le32_to_cpu(gdesc->dword[3]) & VMXNET3_RCD_CSUM_OK) == | |
1138 | VMXNET3_RCD_CSUM_OK) { | |
1139 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1140 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1141 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
1142 | BUG_ON(gdesc->rcd.frg); | |
1143 | } else { | |
1144 | if (gdesc->rcd.csum) { | |
1145 | skb->csum = htons(gdesc->rcd.csum); | |
1146 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1147 | } else { | |
1148 | skb_checksum_none_assert(skb); | |
1149 | } | |
1150 | } | |
1151 | } else { | |
1152 | skb_checksum_none_assert(skb); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | ||
1157 | static void | |
1158 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1159 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1160 | { | |
1161 | rq->stats.drop_err++; | |
1162 | if (!rcd->fcs) | |
1163 | rq->stats.drop_fcs++; | |
1164 | ||
1165 | rq->stats.drop_total++; | |
1166 | ||
1167 | /* | |
1168 | * We do not unmap and chain the rx buffer to the skb. | |
1169 | * We basically pretend this buffer is not used and will be recycled | |
1170 | * by vmxnet3_rq_alloc_rx_buf() | |
1171 | */ | |
1172 | ||
1173 | /* | |
1174 | * ctx->skb may be NULL if this is the first and the only one | |
1175 | * desc for the pkt | |
1176 | */ | |
1177 | if (ctx->skb) | |
1178 | dev_kfree_skb_irq(ctx->skb); | |
1179 | ||
1180 | ctx->skb = NULL; | |
1181 | } | |
1182 | ||
1183 | ||
1184 | static u32 | |
1185 | vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb, | |
1186 | union Vmxnet3_GenericDesc *gdesc) | |
1187 | { | |
1188 | u32 hlen, maplen; | |
1189 | union { | |
1190 | void *ptr; | |
1191 | struct ethhdr *eth; | |
1192 | struct iphdr *ipv4; | |
1193 | struct ipv6hdr *ipv6; | |
1194 | struct tcphdr *tcp; | |
1195 | } hdr; | |
1196 | BUG_ON(gdesc->rcd.tcp == 0); | |
1197 | ||
1198 | maplen = skb_headlen(skb); | |
1199 | if (unlikely(sizeof(struct iphdr) + sizeof(struct tcphdr) > maplen)) | |
1200 | return 0; | |
1201 | ||
1202 | hdr.eth = eth_hdr(skb); | |
1203 | if (gdesc->rcd.v4) { | |
1204 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IP)); | |
1205 | hdr.ptr += sizeof(struct ethhdr); | |
1206 | BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP); | |
1207 | hlen = hdr.ipv4->ihl << 2; | |
1208 | hdr.ptr += hdr.ipv4->ihl << 2; | |
1209 | } else if (gdesc->rcd.v6) { | |
1210 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IPV6)); | |
1211 | hdr.ptr += sizeof(struct ethhdr); | |
1212 | /* Use an estimated value, since we also need to handle | |
1213 | * TSO case. | |
1214 | */ | |
1215 | if (hdr.ipv6->nexthdr != IPPROTO_TCP) | |
1216 | return sizeof(struct ipv6hdr) + sizeof(struct tcphdr); | |
1217 | hlen = sizeof(struct ipv6hdr); | |
1218 | hdr.ptr += sizeof(struct ipv6hdr); | |
1219 | } else { | |
1220 | /* Non-IP pkt, dont estimate header length */ | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | if (hlen + sizeof(struct tcphdr) > maplen) | |
1225 | return 0; | |
1226 | ||
1227 | return (hlen + (hdr.tcp->doff << 2)); | |
1228 | } | |
1229 | ||
1230 | static int | |
1231 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1232 | struct vmxnet3_adapter *adapter, int quota) | |
1233 | { | |
1234 | static const u32 rxprod_reg[2] = { | |
1235 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1236 | }; | |
1237 | u32 num_pkts = 0; | |
1238 | bool skip_page_frags = false; | |
1239 | struct Vmxnet3_RxCompDesc *rcd; | |
1240 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
1241 | u16 segCnt = 0, mss = 0; | |
1242 | #ifdef __BIG_ENDIAN_BITFIELD | |
1243 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1244 | struct Vmxnet3_RxCompDesc rxComp; | |
1245 | #endif | |
1246 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1247 | &rxComp); | |
1248 | while (rcd->gen == rq->comp_ring.gen) { | |
1249 | struct vmxnet3_rx_buf_info *rbi; | |
1250 | struct sk_buff *skb, *new_skb = NULL; | |
1251 | struct page *new_page = NULL; | |
1252 | dma_addr_t new_dma_addr; | |
1253 | int num_to_alloc; | |
1254 | struct Vmxnet3_RxDesc *rxd; | |
1255 | u32 idx, ring_idx; | |
1256 | struct vmxnet3_cmd_ring *ring = NULL; | |
1257 | if (num_pkts >= quota) { | |
1258 | /* we may stop even before we see the EOP desc of | |
1259 | * the current pkt | |
1260 | */ | |
1261 | break; | |
1262 | } | |
1263 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2); | |
1264 | idx = rcd->rxdIdx; | |
1265 | ring_idx = rcd->rqID < adapter->num_rx_queues ? 0 : 1; | |
1266 | ring = rq->rx_ring + ring_idx; | |
1267 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, | |
1268 | &rxCmdDesc); | |
1269 | rbi = rq->buf_info[ring_idx] + idx; | |
1270 | ||
1271 | BUG_ON(rxd->addr != rbi->dma_addr || | |
1272 | rxd->len != rbi->len); | |
1273 | ||
1274 | if (unlikely(rcd->eop && rcd->err)) { | |
1275 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1276 | goto rcd_done; | |
1277 | } | |
1278 | ||
1279 | if (rcd->sop) { /* first buf of the pkt */ | |
1280 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
1281 | rcd->rqID != rq->qid); | |
1282 | ||
1283 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1284 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1285 | ||
1286 | if (unlikely(rcd->len == 0)) { | |
1287 | /* Pretend the rx buffer is skipped. */ | |
1288 | BUG_ON(!(rcd->sop && rcd->eop)); | |
1289 | netdev_dbg(adapter->netdev, | |
1290 | "rxRing[%u][%u] 0 length\n", | |
1291 | ring_idx, idx); | |
1292 | goto rcd_done; | |
1293 | } | |
1294 | ||
1295 | skip_page_frags = false; | |
1296 | ctx->skb = rbi->skb; | |
1297 | new_skb = netdev_alloc_skb_ip_align(adapter->netdev, | |
1298 | rbi->len); | |
1299 | if (new_skb == NULL) { | |
1300 | /* Skb allocation failed, do not handover this | |
1301 | * skb to stack. Reuse it. Drop the existing pkt | |
1302 | */ | |
1303 | rq->stats.rx_buf_alloc_failure++; | |
1304 | ctx->skb = NULL; | |
1305 | rq->stats.drop_total++; | |
1306 | skip_page_frags = true; | |
1307 | goto rcd_done; | |
1308 | } | |
1309 | new_dma_addr = dma_map_single(&adapter->pdev->dev, | |
1310 | new_skb->data, rbi->len, | |
1311 | PCI_DMA_FROMDEVICE); | |
1312 | if (dma_mapping_error(&adapter->pdev->dev, | |
1313 | new_dma_addr)) { | |
1314 | dev_kfree_skb(new_skb); | |
1315 | /* Skb allocation failed, do not handover this | |
1316 | * skb to stack. Reuse it. Drop the existing pkt | |
1317 | */ | |
1318 | rq->stats.rx_buf_alloc_failure++; | |
1319 | ctx->skb = NULL; | |
1320 | rq->stats.drop_total++; | |
1321 | skip_page_frags = true; | |
1322 | goto rcd_done; | |
1323 | } | |
1324 | ||
1325 | dma_unmap_single(&adapter->pdev->dev, rbi->dma_addr, | |
1326 | rbi->len, | |
1327 | PCI_DMA_FROMDEVICE); | |
1328 | ||
1329 | #ifdef VMXNET3_RSS | |
1330 | if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE && | |
1331 | (adapter->netdev->features & NETIF_F_RXHASH)) | |
1332 | skb_set_hash(ctx->skb, | |
1333 | le32_to_cpu(rcd->rssHash), | |
1334 | PKT_HASH_TYPE_L3); | |
1335 | #endif | |
1336 | skb_put(ctx->skb, rcd->len); | |
1337 | ||
1338 | /* Immediate refill */ | |
1339 | rbi->skb = new_skb; | |
1340 | rbi->dma_addr = new_dma_addr; | |
1341 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1342 | rxd->len = rbi->len; | |
1343 | if (adapter->version == 2 && | |
1344 | rcd->type == VMXNET3_CDTYPE_RXCOMP_LRO) { | |
1345 | struct Vmxnet3_RxCompDescExt *rcdlro; | |
1346 | rcdlro = (struct Vmxnet3_RxCompDescExt *)rcd; | |
1347 | ||
1348 | segCnt = rcdlro->segCnt; | |
1349 | BUG_ON(segCnt <= 1); | |
1350 | mss = rcdlro->mss; | |
1351 | if (unlikely(segCnt <= 1)) | |
1352 | segCnt = 0; | |
1353 | } else { | |
1354 | segCnt = 0; | |
1355 | } | |
1356 | } else { | |
1357 | BUG_ON(ctx->skb == NULL && !skip_page_frags); | |
1358 | ||
1359 | /* non SOP buffer must be type 1 in most cases */ | |
1360 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); | |
1361 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
1362 | ||
1363 | /* If an sop buffer was dropped, skip all | |
1364 | * following non-sop fragments. They will be reused. | |
1365 | */ | |
1366 | if (skip_page_frags) | |
1367 | goto rcd_done; | |
1368 | ||
1369 | if (rcd->len) { | |
1370 | new_page = alloc_page(GFP_ATOMIC); | |
1371 | /* Replacement page frag could not be allocated. | |
1372 | * Reuse this page. Drop the pkt and free the | |
1373 | * skb which contained this page as a frag. Skip | |
1374 | * processing all the following non-sop frags. | |
1375 | */ | |
1376 | if (unlikely(!new_page)) { | |
1377 | rq->stats.rx_buf_alloc_failure++; | |
1378 | dev_kfree_skb(ctx->skb); | |
1379 | ctx->skb = NULL; | |
1380 | skip_page_frags = true; | |
1381 | goto rcd_done; | |
1382 | } | |
1383 | new_dma_addr = dma_map_page(&adapter->pdev->dev | |
1384 | , rbi->page, | |
1385 | 0, PAGE_SIZE, | |
1386 | PCI_DMA_FROMDEVICE); | |
1387 | if (dma_mapping_error(&adapter->pdev->dev, | |
1388 | new_dma_addr)) { | |
1389 | put_page(new_page); | |
1390 | rq->stats.rx_buf_alloc_failure++; | |
1391 | dev_kfree_skb(ctx->skb); | |
1392 | ctx->skb = NULL; | |
1393 | skip_page_frags = true; | |
1394 | goto rcd_done; | |
1395 | } | |
1396 | ||
1397 | dma_unmap_page(&adapter->pdev->dev, | |
1398 | rbi->dma_addr, rbi->len, | |
1399 | PCI_DMA_FROMDEVICE); | |
1400 | ||
1401 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
1402 | ||
1403 | /* Immediate refill */ | |
1404 | rbi->page = new_page; | |
1405 | rbi->dma_addr = new_dma_addr; | |
1406 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1407 | rxd->len = rbi->len; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | ||
1412 | skb = ctx->skb; | |
1413 | if (rcd->eop) { | |
1414 | u32 mtu = adapter->netdev->mtu; | |
1415 | skb->len += skb->data_len; | |
1416 | ||
1417 | vmxnet3_rx_csum(adapter, skb, | |
1418 | (union Vmxnet3_GenericDesc *)rcd); | |
1419 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1420 | if (!rcd->tcp || !adapter->lro) | |
1421 | goto not_lro; | |
1422 | ||
1423 | if (segCnt != 0 && mss != 0) { | |
1424 | skb_shinfo(skb)->gso_type = rcd->v4 ? | |
1425 | SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1426 | skb_shinfo(skb)->gso_size = mss; | |
1427 | skb_shinfo(skb)->gso_segs = segCnt; | |
1428 | } else if (segCnt != 0 || skb->len > mtu) { | |
1429 | u32 hlen; | |
1430 | ||
1431 | hlen = vmxnet3_get_hdr_len(adapter, skb, | |
1432 | (union Vmxnet3_GenericDesc *)rcd); | |
1433 | if (hlen == 0) | |
1434 | goto not_lro; | |
1435 | ||
1436 | skb_shinfo(skb)->gso_type = | |
1437 | rcd->v4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1438 | if (segCnt != 0) { | |
1439 | skb_shinfo(skb)->gso_segs = segCnt; | |
1440 | skb_shinfo(skb)->gso_size = | |
1441 | DIV_ROUND_UP(skb->len - | |
1442 | hlen, segCnt); | |
1443 | } else { | |
1444 | skb_shinfo(skb)->gso_size = mtu - hlen; | |
1445 | } | |
1446 | } | |
1447 | not_lro: | |
1448 | if (unlikely(rcd->ts)) | |
1449 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci); | |
1450 | ||
1451 | if (adapter->netdev->features & NETIF_F_LRO) | |
1452 | netif_receive_skb(skb); | |
1453 | else | |
1454 | napi_gro_receive(&rq->napi, skb); | |
1455 | ||
1456 | ctx->skb = NULL; | |
1457 | num_pkts++; | |
1458 | } | |
1459 | ||
1460 | rcd_done: | |
1461 | /* device may have skipped some rx descs */ | |
1462 | ring->next2comp = idx; | |
1463 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1464 | ring = rq->rx_ring + ring_idx; | |
1465 | while (num_to_alloc) { | |
1466 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1467 | &rxCmdDesc); | |
1468 | BUG_ON(!rxd->addr); | |
1469 | ||
1470 | /* Recv desc is ready to be used by the device */ | |
1471 | rxd->gen = ring->gen; | |
1472 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1473 | num_to_alloc--; | |
1474 | } | |
1475 | ||
1476 | /* if needed, update the register */ | |
1477 | if (unlikely(rq->shared->updateRxProd)) { | |
1478 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1479 | rxprod_reg[ring_idx] + rq->qid * 8, | |
1480 | ring->next2fill); | |
1481 | } | |
1482 | ||
1483 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
1484 | vmxnet3_getRxComp(rcd, | |
1485 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); | |
1486 | } | |
1487 | ||
1488 | return num_pkts; | |
1489 | } | |
1490 | ||
1491 | ||
1492 | static void | |
1493 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1494 | struct vmxnet3_adapter *adapter) | |
1495 | { | |
1496 | u32 i, ring_idx; | |
1497 | struct Vmxnet3_RxDesc *rxd; | |
1498 | ||
1499 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1500 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
1501 | #ifdef __BIG_ENDIAN_BITFIELD | |
1502 | struct Vmxnet3_RxDesc rxDesc; | |
1503 | #endif | |
1504 | vmxnet3_getRxDesc(rxd, | |
1505 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
1506 | ||
1507 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1508 | rq->buf_info[ring_idx][i].skb) { | |
1509 | dma_unmap_single(&adapter->pdev->dev, rxd->addr, | |
1510 | rxd->len, PCI_DMA_FROMDEVICE); | |
1511 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1512 | rq->buf_info[ring_idx][i].skb = NULL; | |
1513 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1514 | rq->buf_info[ring_idx][i].page) { | |
1515 | dma_unmap_page(&adapter->pdev->dev, rxd->addr, | |
1516 | rxd->len, PCI_DMA_FROMDEVICE); | |
1517 | put_page(rq->buf_info[ring_idx][i].page); | |
1518 | rq->buf_info[ring_idx][i].page = NULL; | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1523 | rq->rx_ring[ring_idx].next2fill = | |
1524 | rq->rx_ring[ring_idx].next2comp = 0; | |
1525 | } | |
1526 | ||
1527 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1528 | rq->comp_ring.next2proc = 0; | |
1529 | } | |
1530 | ||
1531 | ||
1532 | static void | |
1533 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1534 | { | |
1535 | int i; | |
1536 | ||
1537 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1538 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1539 | } | |
1540 | ||
1541 | ||
1542 | static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, | |
1543 | struct vmxnet3_adapter *adapter) | |
1544 | { | |
1545 | int i; | |
1546 | int j; | |
1547 | ||
1548 | /* all rx buffers must have already been freed */ | |
1549 | for (i = 0; i < 2; i++) { | |
1550 | if (rq->buf_info[i]) { | |
1551 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1552 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | ||
1557 | for (i = 0; i < 2; i++) { | |
1558 | if (rq->rx_ring[i].base) { | |
1559 | dma_free_coherent(&adapter->pdev->dev, | |
1560 | rq->rx_ring[i].size | |
1561 | * sizeof(struct Vmxnet3_RxDesc), | |
1562 | rq->rx_ring[i].base, | |
1563 | rq->rx_ring[i].basePA); | |
1564 | rq->rx_ring[i].base = NULL; | |
1565 | } | |
1566 | rq->buf_info[i] = NULL; | |
1567 | } | |
1568 | ||
1569 | if (rq->comp_ring.base) { | |
1570 | dma_free_coherent(&adapter->pdev->dev, rq->comp_ring.size | |
1571 | * sizeof(struct Vmxnet3_RxCompDesc), | |
1572 | rq->comp_ring.base, rq->comp_ring.basePA); | |
1573 | rq->comp_ring.base = NULL; | |
1574 | } | |
1575 | ||
1576 | if (rq->buf_info[0]) { | |
1577 | size_t sz = sizeof(struct vmxnet3_rx_buf_info) * | |
1578 | (rq->rx_ring[0].size + rq->rx_ring[1].size); | |
1579 | dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], | |
1580 | rq->buf_info_pa); | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | ||
1585 | static int | |
1586 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1587 | struct vmxnet3_adapter *adapter) | |
1588 | { | |
1589 | int i; | |
1590 | ||
1591 | /* initialize buf_info */ | |
1592 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1593 | ||
1594 | /* 1st buf for a pkt is skbuff */ | |
1595 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1596 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1597 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1598 | } else { /* subsequent bufs for a pkt is frag */ | |
1599 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1600 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1601 | } | |
1602 | } | |
1603 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1604 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1605 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1606 | } | |
1607 | ||
1608 | /* reset internal state and allocate buffers for both rings */ | |
1609 | for (i = 0; i < 2; i++) { | |
1610 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
1611 | ||
1612 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1613 | sizeof(struct Vmxnet3_RxDesc)); | |
1614 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1615 | } | |
1616 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1617 | adapter) == 0) { | |
1618 | /* at least has 1 rx buffer for the 1st ring */ | |
1619 | return -ENOMEM; | |
1620 | } | |
1621 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1622 | ||
1623 | /* reset the comp ring */ | |
1624 | rq->comp_ring.next2proc = 0; | |
1625 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1626 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1627 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1628 | ||
1629 | /* reset rxctx */ | |
1630 | rq->rx_ctx.skb = NULL; | |
1631 | ||
1632 | /* stats are not reset */ | |
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | ||
1637 | static int | |
1638 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1639 | { | |
1640 | int i, err = 0; | |
1641 | ||
1642 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1643 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1644 | if (unlikely(err)) { | |
1645 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1646 | "initialize rx queue%i\n", | |
1647 | adapter->netdev->name, i); | |
1648 | break; | |
1649 | } | |
1650 | } | |
1651 | return err; | |
1652 | ||
1653 | } | |
1654 | ||
1655 | ||
1656 | static int | |
1657 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1658 | { | |
1659 | int i; | |
1660 | size_t sz; | |
1661 | struct vmxnet3_rx_buf_info *bi; | |
1662 | ||
1663 | for (i = 0; i < 2; i++) { | |
1664 | ||
1665 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
1666 | rq->rx_ring[i].base = dma_alloc_coherent( | |
1667 | &adapter->pdev->dev, sz, | |
1668 | &rq->rx_ring[i].basePA, | |
1669 | GFP_KERNEL); | |
1670 | if (!rq->rx_ring[i].base) { | |
1671 | netdev_err(adapter->netdev, | |
1672 | "failed to allocate rx ring %d\n", i); | |
1673 | goto err; | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
1678 | rq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, sz, | |
1679 | &rq->comp_ring.basePA, | |
1680 | GFP_KERNEL); | |
1681 | if (!rq->comp_ring.base) { | |
1682 | netdev_err(adapter->netdev, "failed to allocate rx comp ring\n"); | |
1683 | goto err; | |
1684 | } | |
1685 | ||
1686 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1687 | rq->rx_ring[1].size); | |
1688 | bi = dma_zalloc_coherent(&adapter->pdev->dev, sz, &rq->buf_info_pa, | |
1689 | GFP_KERNEL); | |
1690 | if (!bi) | |
1691 | goto err; | |
1692 | ||
1693 | rq->buf_info[0] = bi; | |
1694 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1695 | ||
1696 | return 0; | |
1697 | ||
1698 | err: | |
1699 | vmxnet3_rq_destroy(rq, adapter); | |
1700 | return -ENOMEM; | |
1701 | } | |
1702 | ||
1703 | ||
1704 | static int | |
1705 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1706 | { | |
1707 | int i, err = 0; | |
1708 | ||
1709 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1710 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1711 | if (unlikely(err)) { | |
1712 | dev_err(&adapter->netdev->dev, | |
1713 | "%s: failed to create rx queue%i\n", | |
1714 | adapter->netdev->name, i); | |
1715 | goto err_out; | |
1716 | } | |
1717 | } | |
1718 | return err; | |
1719 | err_out: | |
1720 | vmxnet3_rq_destroy_all(adapter); | |
1721 | return err; | |
1722 | ||
1723 | } | |
1724 | ||
1725 | /* Multiple queue aware polling function for tx and rx */ | |
1726 | ||
1727 | static int | |
1728 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1729 | { | |
1730 | int rcd_done = 0, i; | |
1731 | if (unlikely(adapter->shared->ecr)) | |
1732 | vmxnet3_process_events(adapter); | |
1733 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1734 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
1735 | ||
1736 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1737 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1738 | adapter, budget); | |
1739 | return rcd_done; | |
1740 | } | |
1741 | ||
1742 | ||
1743 | static int | |
1744 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1745 | { | |
1746 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, | |
1747 | struct vmxnet3_rx_queue, napi); | |
1748 | int rxd_done; | |
1749 | ||
1750 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1751 | ||
1752 | if (rxd_done < budget) { | |
1753 | napi_complete(napi); | |
1754 | vmxnet3_enable_all_intrs(rx_queue->adapter); | |
1755 | } | |
1756 | return rxd_done; | |
1757 | } | |
1758 | ||
1759 | /* | |
1760 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1761 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1762 | */ | |
1763 | ||
1764 | static int | |
1765 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1766 | { | |
1767 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1768 | struct vmxnet3_rx_queue, napi); | |
1769 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1770 | int rxd_done; | |
1771 | ||
1772 | /* When sharing interrupt with corresponding tx queue, process | |
1773 | * tx completions in that queue as well | |
1774 | */ | |
1775 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1776 | struct vmxnet3_tx_queue *tq = | |
1777 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1778 | vmxnet3_tq_tx_complete(tq, adapter); | |
1779 | } | |
1780 | ||
1781 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
1782 | ||
1783 | if (rxd_done < budget) { | |
1784 | napi_complete(napi); | |
1785 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); | |
1786 | } | |
1787 | return rxd_done; | |
1788 | } | |
1789 | ||
1790 | ||
1791 | #ifdef CONFIG_PCI_MSI | |
1792 | ||
1793 | /* | |
1794 | * Handle completion interrupts on tx queues | |
1795 | * Returns whether or not the intr is handled | |
1796 | */ | |
1797 | ||
1798 | static irqreturn_t | |
1799 | vmxnet3_msix_tx(int irq, void *data) | |
1800 | { | |
1801 | struct vmxnet3_tx_queue *tq = data; | |
1802 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1803 | ||
1804 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1805 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1806 | ||
1807 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1808 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1809 | int i; | |
1810 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1811 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1812 | vmxnet3_tq_tx_complete(txq, adapter); | |
1813 | } | |
1814 | } else { | |
1815 | vmxnet3_tq_tx_complete(tq, adapter); | |
1816 | } | |
1817 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1818 | ||
1819 | return IRQ_HANDLED; | |
1820 | } | |
1821 | ||
1822 | ||
1823 | /* | |
1824 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1825 | * intr is handled | |
1826 | */ | |
1827 | ||
1828 | static irqreturn_t | |
1829 | vmxnet3_msix_rx(int irq, void *data) | |
1830 | { | |
1831 | struct vmxnet3_rx_queue *rq = data; | |
1832 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1833 | ||
1834 | /* disable intr if needed */ | |
1835 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1836 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1837 | napi_schedule(&rq->napi); | |
1838 | ||
1839 | return IRQ_HANDLED; | |
1840 | } | |
1841 | ||
1842 | /* | |
1843 | *---------------------------------------------------------------------------- | |
1844 | * | |
1845 | * vmxnet3_msix_event -- | |
1846 | * | |
1847 | * vmxnet3 msix event intr handler | |
1848 | * | |
1849 | * Result: | |
1850 | * whether or not the intr is handled | |
1851 | * | |
1852 | *---------------------------------------------------------------------------- | |
1853 | */ | |
1854 | ||
1855 | static irqreturn_t | |
1856 | vmxnet3_msix_event(int irq, void *data) | |
1857 | { | |
1858 | struct net_device *dev = data; | |
1859 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1860 | ||
1861 | /* disable intr if needed */ | |
1862 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1863 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
1864 | ||
1865 | if (adapter->shared->ecr) | |
1866 | vmxnet3_process_events(adapter); | |
1867 | ||
1868 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
1869 | ||
1870 | return IRQ_HANDLED; | |
1871 | } | |
1872 | ||
1873 | #endif /* CONFIG_PCI_MSI */ | |
1874 | ||
1875 | ||
1876 | /* Interrupt handler for vmxnet3 */ | |
1877 | static irqreturn_t | |
1878 | vmxnet3_intr(int irq, void *dev_id) | |
1879 | { | |
1880 | struct net_device *dev = dev_id; | |
1881 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1882 | ||
1883 | if (adapter->intr.type == VMXNET3_IT_INTX) { | |
1884 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); | |
1885 | if (unlikely(icr == 0)) | |
1886 | /* not ours */ | |
1887 | return IRQ_NONE; | |
1888 | } | |
1889 | ||
1890 | ||
1891 | /* disable intr if needed */ | |
1892 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1893 | vmxnet3_disable_all_intrs(adapter); | |
1894 | ||
1895 | napi_schedule(&adapter->rx_queue[0].napi); | |
1896 | ||
1897 | return IRQ_HANDLED; | |
1898 | } | |
1899 | ||
1900 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1901 | ||
1902 | /* netpoll callback. */ | |
1903 | static void | |
1904 | vmxnet3_netpoll(struct net_device *netdev) | |
1905 | { | |
1906 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1907 | ||
1908 | switch (adapter->intr.type) { | |
1909 | #ifdef CONFIG_PCI_MSI | |
1910 | case VMXNET3_IT_MSIX: { | |
1911 | int i; | |
1912 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1913 | vmxnet3_msix_rx(0, &adapter->rx_queue[i]); | |
1914 | break; | |
1915 | } | |
1916 | #endif | |
1917 | case VMXNET3_IT_MSI: | |
1918 | default: | |
1919 | vmxnet3_intr(0, adapter->netdev); | |
1920 | break; | |
1921 | } | |
1922 | ||
1923 | } | |
1924 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1925 | ||
1926 | static int | |
1927 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1928 | { | |
1929 | struct vmxnet3_intr *intr = &adapter->intr; | |
1930 | int err = 0, i; | |
1931 | int vector = 0; | |
1932 | ||
1933 | #ifdef CONFIG_PCI_MSI | |
1934 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
1935 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1936 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1937 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
1938 | adapter->netdev->name, vector); | |
1939 | err = request_irq( | |
1940 | intr->msix_entries[vector].vector, | |
1941 | vmxnet3_msix_tx, 0, | |
1942 | adapter->tx_queue[i].name, | |
1943 | &adapter->tx_queue[i]); | |
1944 | } else { | |
1945 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
1946 | adapter->netdev->name, vector); | |
1947 | } | |
1948 | if (err) { | |
1949 | dev_err(&adapter->netdev->dev, | |
1950 | "Failed to request irq for MSIX, %s, " | |
1951 | "error %d\n", | |
1952 | adapter->tx_queue[i].name, err); | |
1953 | return err; | |
1954 | } | |
1955 | ||
1956 | /* Handle the case where only 1 MSIx was allocated for | |
1957 | * all tx queues */ | |
1958 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1959 | for (; i < adapter->num_tx_queues; i++) | |
1960 | adapter->tx_queue[i].comp_ring.intr_idx | |
1961 | = vector; | |
1962 | vector++; | |
1963 | break; | |
1964 | } else { | |
1965 | adapter->tx_queue[i].comp_ring.intr_idx | |
1966 | = vector++; | |
1967 | } | |
1968 | } | |
1969 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
1970 | vector = 0; | |
1971 | ||
1972 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1973 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
1974 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
1975 | adapter->netdev->name, vector); | |
1976 | else | |
1977 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
1978 | adapter->netdev->name, vector); | |
1979 | err = request_irq(intr->msix_entries[vector].vector, | |
1980 | vmxnet3_msix_rx, 0, | |
1981 | adapter->rx_queue[i].name, | |
1982 | &(adapter->rx_queue[i])); | |
1983 | if (err) { | |
1984 | netdev_err(adapter->netdev, | |
1985 | "Failed to request irq for MSIX, " | |
1986 | "%s, error %d\n", | |
1987 | adapter->rx_queue[i].name, err); | |
1988 | return err; | |
1989 | } | |
1990 | ||
1991 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
1992 | } | |
1993 | ||
1994 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
1995 | adapter->netdev->name, vector); | |
1996 | err = request_irq(intr->msix_entries[vector].vector, | |
1997 | vmxnet3_msix_event, 0, | |
1998 | intr->event_msi_vector_name, adapter->netdev); | |
1999 | intr->event_intr_idx = vector; | |
2000 | ||
2001 | } else if (intr->type == VMXNET3_IT_MSI) { | |
2002 | adapter->num_rx_queues = 1; | |
2003 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, | |
2004 | adapter->netdev->name, adapter->netdev); | |
2005 | } else { | |
2006 | #endif | |
2007 | adapter->num_rx_queues = 1; | |
2008 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, | |
2009 | IRQF_SHARED, adapter->netdev->name, | |
2010 | adapter->netdev); | |
2011 | #ifdef CONFIG_PCI_MSI | |
2012 | } | |
2013 | #endif | |
2014 | intr->num_intrs = vector + 1; | |
2015 | if (err) { | |
2016 | netdev_err(adapter->netdev, | |
2017 | "Failed to request irq (intr type:%d), error %d\n", | |
2018 | intr->type, err); | |
2019 | } else { | |
2020 | /* Number of rx queues will not change after this */ | |
2021 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2022 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2023 | rq->qid = i; | |
2024 | rq->qid2 = i + adapter->num_rx_queues; | |
2025 | } | |
2026 | ||
2027 | ||
2028 | ||
2029 | /* init our intr settings */ | |
2030 | for (i = 0; i < intr->num_intrs; i++) | |
2031 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
2032 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
2033 | adapter->intr.event_intr_idx = 0; | |
2034 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2035 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
2036 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
2037 | } | |
2038 | ||
2039 | netdev_info(adapter->netdev, | |
2040 | "intr type %u, mode %u, %u vectors allocated\n", | |
2041 | intr->type, intr->mask_mode, intr->num_intrs); | |
2042 | } | |
2043 | ||
2044 | return err; | |
2045 | } | |
2046 | ||
2047 | ||
2048 | static void | |
2049 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
2050 | { | |
2051 | struct vmxnet3_intr *intr = &adapter->intr; | |
2052 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
2053 | ||
2054 | switch (intr->type) { | |
2055 | #ifdef CONFIG_PCI_MSI | |
2056 | case VMXNET3_IT_MSIX: | |
2057 | { | |
2058 | int i, vector = 0; | |
2059 | ||
2060 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
2061 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2062 | free_irq(intr->msix_entries[vector++].vector, | |
2063 | &(adapter->tx_queue[i])); | |
2064 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
2065 | break; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2070 | free_irq(intr->msix_entries[vector++].vector, | |
2071 | &(adapter->rx_queue[i])); | |
2072 | } | |
2073 | ||
2074 | free_irq(intr->msix_entries[vector].vector, | |
2075 | adapter->netdev); | |
2076 | BUG_ON(vector >= intr->num_intrs); | |
2077 | break; | |
2078 | } | |
2079 | #endif | |
2080 | case VMXNET3_IT_MSI: | |
2081 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2082 | break; | |
2083 | case VMXNET3_IT_INTX: | |
2084 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2085 | break; | |
2086 | default: | |
2087 | BUG(); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | ||
2092 | static void | |
2093 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
2094 | { | |
2095 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2096 | u16 vid; | |
2097 | ||
2098 | /* allow untagged pkts */ | |
2099 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
2100 | ||
2101 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
2102 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
2103 | } | |
2104 | ||
2105 | ||
2106 | static int | |
2107 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) | |
2108 | { | |
2109 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2110 | ||
2111 | if (!(netdev->flags & IFF_PROMISC)) { | |
2112 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2113 | unsigned long flags; | |
2114 | ||
2115 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
2116 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2117 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2118 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2119 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2120 | } | |
2121 | ||
2122 | set_bit(vid, adapter->active_vlans); | |
2123 | ||
2124 | return 0; | |
2125 | } | |
2126 | ||
2127 | ||
2128 | static int | |
2129 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) | |
2130 | { | |
2131 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2132 | ||
2133 | if (!(netdev->flags & IFF_PROMISC)) { | |
2134 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2135 | unsigned long flags; | |
2136 | ||
2137 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
2138 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2139 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2140 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2141 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2142 | } | |
2143 | ||
2144 | clear_bit(vid, adapter->active_vlans); | |
2145 | ||
2146 | return 0; | |
2147 | } | |
2148 | ||
2149 | ||
2150 | static u8 * | |
2151 | vmxnet3_copy_mc(struct net_device *netdev) | |
2152 | { | |
2153 | u8 *buf = NULL; | |
2154 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; | |
2155 | ||
2156 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
2157 | if (sz <= 0xffff) { | |
2158 | /* We may be called with BH disabled */ | |
2159 | buf = kmalloc(sz, GFP_ATOMIC); | |
2160 | if (buf) { | |
2161 | struct netdev_hw_addr *ha; | |
2162 | int i = 0; | |
2163 | ||
2164 | netdev_for_each_mc_addr(ha, netdev) | |
2165 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
2166 | ETH_ALEN); | |
2167 | } | |
2168 | } | |
2169 | return buf; | |
2170 | } | |
2171 | ||
2172 | ||
2173 | static void | |
2174 | vmxnet3_set_mc(struct net_device *netdev) | |
2175 | { | |
2176 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2177 | unsigned long flags; | |
2178 | struct Vmxnet3_RxFilterConf *rxConf = | |
2179 | &adapter->shared->devRead.rxFilterConf; | |
2180 | u8 *new_table = NULL; | |
2181 | dma_addr_t new_table_pa = 0; | |
2182 | u32 new_mode = VMXNET3_RXM_UCAST; | |
2183 | ||
2184 | if (netdev->flags & IFF_PROMISC) { | |
2185 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2186 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2187 | ||
2188 | new_mode |= VMXNET3_RXM_PROMISC; | |
2189 | } else { | |
2190 | vmxnet3_restore_vlan(adapter); | |
2191 | } | |
2192 | ||
2193 | if (netdev->flags & IFF_BROADCAST) | |
2194 | new_mode |= VMXNET3_RXM_BCAST; | |
2195 | ||
2196 | if (netdev->flags & IFF_ALLMULTI) | |
2197 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2198 | else | |
2199 | if (!netdev_mc_empty(netdev)) { | |
2200 | new_table = vmxnet3_copy_mc(netdev); | |
2201 | if (new_table) { | |
2202 | size_t sz = netdev_mc_count(netdev) * ETH_ALEN; | |
2203 | ||
2204 | rxConf->mfTableLen = cpu_to_le16(sz); | |
2205 | new_table_pa = dma_map_single( | |
2206 | &adapter->pdev->dev, | |
2207 | new_table, | |
2208 | sz, | |
2209 | PCI_DMA_TODEVICE); | |
2210 | } | |
2211 | ||
2212 | if (!dma_mapping_error(&adapter->pdev->dev, | |
2213 | new_table_pa)) { | |
2214 | new_mode |= VMXNET3_RXM_MCAST; | |
2215 | rxConf->mfTablePA = cpu_to_le64(new_table_pa); | |
2216 | } else { | |
2217 | netdev_info(netdev, | |
2218 | "failed to copy mcast list, setting ALL_MULTI\n"); | |
2219 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
2224 | rxConf->mfTableLen = 0; | |
2225 | rxConf->mfTablePA = 0; | |
2226 | } | |
2227 | ||
2228 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2229 | if (new_mode != rxConf->rxMode) { | |
2230 | rxConf->rxMode = cpu_to_le32(new_mode); | |
2231 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2232 | VMXNET3_CMD_UPDATE_RX_MODE); | |
2233 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2234 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2235 | } | |
2236 | ||
2237 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2238 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
2239 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2240 | ||
2241 | if (new_table_pa) | |
2242 | dma_unmap_single(&adapter->pdev->dev, new_table_pa, | |
2243 | rxConf->mfTableLen, PCI_DMA_TODEVICE); | |
2244 | kfree(new_table); | |
2245 | } | |
2246 | ||
2247 | void | |
2248 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2249 | { | |
2250 | int i; | |
2251 | ||
2252 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2253 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2254 | } | |
2255 | ||
2256 | ||
2257 | /* | |
2258 | * Set up driver_shared based on settings in adapter. | |
2259 | */ | |
2260 | ||
2261 | static void | |
2262 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2263 | { | |
2264 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2265 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2266 | struct Vmxnet3_TxQueueConf *tqc; | |
2267 | struct Vmxnet3_RxQueueConf *rqc; | |
2268 | int i; | |
2269 | ||
2270 | memset(shared, 0, sizeof(*shared)); | |
2271 | ||
2272 | /* driver settings */ | |
2273 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); | |
2274 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2275 | VMXNET3_DRIVER_VERSION_NUM); | |
2276 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? | |
2277 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2278 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
2279 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( | |
2280 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2281 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2282 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
2283 | ||
2284 | devRead->misc.ddPA = cpu_to_le64(adapter->adapter_pa); | |
2285 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); | |
2286 | ||
2287 | /* set up feature flags */ | |
2288 | if (adapter->netdev->features & NETIF_F_RXCSUM) | |
2289 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; | |
2290 | ||
2291 | if (adapter->netdev->features & NETIF_F_LRO) { | |
2292 | devRead->misc.uptFeatures |= UPT1_F_LRO; | |
2293 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); | |
2294 | } | |
2295 | if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
2296 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; | |
2297 | ||
2298 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); | |
2299 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2300 | devRead->misc.queueDescLen = cpu_to_le32( | |
2301 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + | |
2302 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
2303 | ||
2304 | /* tx queue settings */ | |
2305 | devRead->misc.numTxQueues = adapter->num_tx_queues; | |
2306 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2307 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2308 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2309 | tqc = &adapter->tqd_start[i].conf; | |
2310 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2311 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2312 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
2313 | tqc->ddPA = cpu_to_le64(tq->buf_info_pa); | |
2314 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); | |
2315 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
2316 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); | |
2317 | tqc->ddLen = cpu_to_le32( | |
2318 | sizeof(struct vmxnet3_tx_buf_info) * | |
2319 | tqc->txRingSize); | |
2320 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2321 | } | |
2322 | ||
2323 | /* rx queue settings */ | |
2324 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2325 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2326 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2327 | rqc = &adapter->rqd_start[i].conf; | |
2328 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2329 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2330 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
2331 | rqc->ddPA = cpu_to_le64(rq->buf_info_pa); | |
2332 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); | |
2333 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2334 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2335 | rqc->ddLen = cpu_to_le32( | |
2336 | sizeof(struct vmxnet3_rx_buf_info) * | |
2337 | (rqc->rxRingSize[0] + | |
2338 | rqc->rxRingSize[1])); | |
2339 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
2340 | } | |
2341 | ||
2342 | #ifdef VMXNET3_RSS | |
2343 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2344 | ||
2345 | if (adapter->rss) { | |
2346 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
2347 | ||
2348 | devRead->misc.uptFeatures |= UPT1_F_RSS; | |
2349 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2350 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2351 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2352 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2353 | UPT1_RSS_HASH_TYPE_IPV6; | |
2354 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2355 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2356 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
2357 | netdev_rss_key_fill(rssConf->hashKey, sizeof(rssConf->hashKey)); | |
2358 | ||
2359 | for (i = 0; i < rssConf->indTableSize; i++) | |
2360 | rssConf->indTable[i] = ethtool_rxfh_indir_default( | |
2361 | i, adapter->num_rx_queues); | |
2362 | ||
2363 | devRead->rssConfDesc.confVer = 1; | |
2364 | devRead->rssConfDesc.confLen = cpu_to_le32(sizeof(*rssConf)); | |
2365 | devRead->rssConfDesc.confPA = | |
2366 | cpu_to_le64(adapter->rss_conf_pa); | |
2367 | } | |
2368 | ||
2369 | #endif /* VMXNET3_RSS */ | |
2370 | ||
2371 | /* intr settings */ | |
2372 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2373 | VMXNET3_IMM_AUTO; | |
2374 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2375 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2376 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2377 | ||
2378 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
2379 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
2380 | ||
2381 | /* rx filter settings */ | |
2382 | devRead->rxFilterConf.rxMode = 0; | |
2383 | vmxnet3_restore_vlan(adapter); | |
2384 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); | |
2385 | ||
2386 | /* the rest are already zeroed */ | |
2387 | } | |
2388 | ||
2389 | ||
2390 | int | |
2391 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2392 | { | |
2393 | int err, i; | |
2394 | u32 ret; | |
2395 | unsigned long flags; | |
2396 | ||
2397 | netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," | |
2398 | " ring sizes %u %u %u\n", adapter->netdev->name, | |
2399 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2400 | adapter->tx_queue[0].tx_ring.size, | |
2401 | adapter->rx_queue[0].rx_ring[0].size, | |
2402 | adapter->rx_queue[0].rx_ring[1].size); | |
2403 | ||
2404 | vmxnet3_tq_init_all(adapter); | |
2405 | err = vmxnet3_rq_init_all(adapter); | |
2406 | if (err) { | |
2407 | netdev_err(adapter->netdev, | |
2408 | "Failed to init rx queue error %d\n", err); | |
2409 | goto rq_err; | |
2410 | } | |
2411 | ||
2412 | err = vmxnet3_request_irqs(adapter); | |
2413 | if (err) { | |
2414 | netdev_err(adapter->netdev, | |
2415 | "Failed to setup irq for error %d\n", err); | |
2416 | goto irq_err; | |
2417 | } | |
2418 | ||
2419 | vmxnet3_setup_driver_shared(adapter); | |
2420 | ||
2421 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( | |
2422 | adapter->shared_pa)); | |
2423 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2424 | adapter->shared_pa)); | |
2425 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2426 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2427 | VMXNET3_CMD_ACTIVATE_DEV); | |
2428 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2429 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2430 | ||
2431 | if (ret != 0) { | |
2432 | netdev_err(adapter->netdev, | |
2433 | "Failed to activate dev: error %u\n", ret); | |
2434 | err = -EINVAL; | |
2435 | goto activate_err; | |
2436 | } | |
2437 | ||
2438 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2439 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2440 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2441 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2442 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2443 | (i * VMXNET3_REG_ALIGN)), | |
2444 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2445 | } | |
2446 | ||
2447 | /* Apply the rx filter settins last. */ | |
2448 | vmxnet3_set_mc(adapter->netdev); | |
2449 | ||
2450 | /* | |
2451 | * Check link state when first activating device. It will start the | |
2452 | * tx queue if the link is up. | |
2453 | */ | |
2454 | vmxnet3_check_link(adapter, true); | |
2455 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2456 | napi_enable(&adapter->rx_queue[i].napi); | |
2457 | vmxnet3_enable_all_intrs(adapter); | |
2458 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2459 | return 0; | |
2460 | ||
2461 | activate_err: | |
2462 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2463 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2464 | vmxnet3_free_irqs(adapter); | |
2465 | irq_err: | |
2466 | rq_err: | |
2467 | /* free up buffers we allocated */ | |
2468 | vmxnet3_rq_cleanup_all(adapter); | |
2469 | return err; | |
2470 | } | |
2471 | ||
2472 | ||
2473 | void | |
2474 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2475 | { | |
2476 | unsigned long flags; | |
2477 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2478 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); | |
2479 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2480 | } | |
2481 | ||
2482 | ||
2483 | int | |
2484 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2485 | { | |
2486 | int i; | |
2487 | unsigned long flags; | |
2488 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) | |
2489 | return 0; | |
2490 | ||
2491 | ||
2492 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2493 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2494 | VMXNET3_CMD_QUIESCE_DEV); | |
2495 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2496 | vmxnet3_disable_all_intrs(adapter); | |
2497 | ||
2498 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2499 | napi_disable(&adapter->rx_queue[i].napi); | |
2500 | netif_tx_disable(adapter->netdev); | |
2501 | adapter->link_speed = 0; | |
2502 | netif_carrier_off(adapter->netdev); | |
2503 | ||
2504 | vmxnet3_tq_cleanup_all(adapter); | |
2505 | vmxnet3_rq_cleanup_all(adapter); | |
2506 | vmxnet3_free_irqs(adapter); | |
2507 | return 0; | |
2508 | } | |
2509 | ||
2510 | ||
2511 | static void | |
2512 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2513 | { | |
2514 | u32 tmp; | |
2515 | ||
2516 | tmp = *(u32 *)mac; | |
2517 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2518 | ||
2519 | tmp = (mac[5] << 8) | mac[4]; | |
2520 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2521 | } | |
2522 | ||
2523 | ||
2524 | static int | |
2525 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2526 | { | |
2527 | struct sockaddr *addr = p; | |
2528 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2529 | ||
2530 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2531 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2532 | ||
2533 | return 0; | |
2534 | } | |
2535 | ||
2536 | ||
2537 | /* ==================== initialization and cleanup routines ============ */ | |
2538 | ||
2539 | static int | |
2540 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
2541 | { | |
2542 | int err; | |
2543 | unsigned long mmio_start, mmio_len; | |
2544 | struct pci_dev *pdev = adapter->pdev; | |
2545 | ||
2546 | err = pci_enable_device(pdev); | |
2547 | if (err) { | |
2548 | dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err); | |
2549 | return err; | |
2550 | } | |
2551 | ||
2552 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
2553 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
2554 | dev_err(&pdev->dev, | |
2555 | "pci_set_consistent_dma_mask failed\n"); | |
2556 | err = -EIO; | |
2557 | goto err_set_mask; | |
2558 | } | |
2559 | *dma64 = true; | |
2560 | } else { | |
2561 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
2562 | dev_err(&pdev->dev, | |
2563 | "pci_set_dma_mask failed\n"); | |
2564 | err = -EIO; | |
2565 | goto err_set_mask; | |
2566 | } | |
2567 | *dma64 = false; | |
2568 | } | |
2569 | ||
2570 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
2571 | vmxnet3_driver_name); | |
2572 | if (err) { | |
2573 | dev_err(&pdev->dev, | |
2574 | "Failed to request region for adapter: error %d\n", err); | |
2575 | goto err_set_mask; | |
2576 | } | |
2577 | ||
2578 | pci_set_master(pdev); | |
2579 | ||
2580 | mmio_start = pci_resource_start(pdev, 0); | |
2581 | mmio_len = pci_resource_len(pdev, 0); | |
2582 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2583 | if (!adapter->hw_addr0) { | |
2584 | dev_err(&pdev->dev, "Failed to map bar0\n"); | |
2585 | err = -EIO; | |
2586 | goto err_ioremap; | |
2587 | } | |
2588 | ||
2589 | mmio_start = pci_resource_start(pdev, 1); | |
2590 | mmio_len = pci_resource_len(pdev, 1); | |
2591 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2592 | if (!adapter->hw_addr1) { | |
2593 | dev_err(&pdev->dev, "Failed to map bar1\n"); | |
2594 | err = -EIO; | |
2595 | goto err_bar1; | |
2596 | } | |
2597 | return 0; | |
2598 | ||
2599 | err_bar1: | |
2600 | iounmap(adapter->hw_addr0); | |
2601 | err_ioremap: | |
2602 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
2603 | err_set_mask: | |
2604 | pci_disable_device(pdev); | |
2605 | return err; | |
2606 | } | |
2607 | ||
2608 | ||
2609 | static void | |
2610 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2611 | { | |
2612 | BUG_ON(!adapter->pdev); | |
2613 | ||
2614 | iounmap(adapter->hw_addr0); | |
2615 | iounmap(adapter->hw_addr1); | |
2616 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2617 | pci_disable_device(adapter->pdev); | |
2618 | } | |
2619 | ||
2620 | ||
2621 | static void | |
2622 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2623 | { | |
2624 | size_t sz, i, ring0_size, ring1_size, comp_size; | |
2625 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[0]; | |
2626 | ||
2627 | ||
2628 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
2629 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2630 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2631 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2632 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2633 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2634 | ||
2635 | adapter->rx_buf_per_pkt = 1; | |
2636 | } else { | |
2637 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2638 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2639 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2640 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2641 | } | |
2642 | ||
2643 | /* | |
2644 | * for simplicity, force the ring0 size to be a multiple of | |
2645 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2646 | */ | |
2647 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
2648 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; | |
2649 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
2650 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / | |
2651 | sz * sz); | |
2652 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
2653 | ring1_size = (ring1_size + sz - 1) / sz * sz; | |
2654 | ring1_size = min_t(u32, ring1_size, VMXNET3_RX_RING2_MAX_SIZE / | |
2655 | sz * sz); | |
2656 | comp_size = ring0_size + ring1_size; | |
2657 | ||
2658 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2659 | rq = &adapter->rx_queue[i]; | |
2660 | rq->rx_ring[0].size = ring0_size; | |
2661 | rq->rx_ring[1].size = ring1_size; | |
2662 | rq->comp_ring.size = comp_size; | |
2663 | } | |
2664 | } | |
2665 | ||
2666 | ||
2667 | int | |
2668 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
2669 | u32 rx_ring_size, u32 rx_ring2_size) | |
2670 | { | |
2671 | int err = 0, i; | |
2672 | ||
2673 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2674 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2675 | tq->tx_ring.size = tx_ring_size; | |
2676 | tq->data_ring.size = tx_ring_size; | |
2677 | tq->comp_ring.size = tx_ring_size; | |
2678 | tq->shared = &adapter->tqd_start[i].ctrl; | |
2679 | tq->stopped = true; | |
2680 | tq->adapter = adapter; | |
2681 | tq->qid = i; | |
2682 | err = vmxnet3_tq_create(tq, adapter); | |
2683 | /* | |
2684 | * Too late to change num_tx_queues. We cannot do away with | |
2685 | * lesser number of queues than what we asked for | |
2686 | */ | |
2687 | if (err) | |
2688 | goto queue_err; | |
2689 | } | |
2690 | ||
2691 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; | |
2692 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
2693 | vmxnet3_adjust_rx_ring_size(adapter); | |
2694 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2695 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2696 | /* qid and qid2 for rx queues will be assigned later when num | |
2697 | * of rx queues is finalized after allocating intrs */ | |
2698 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2699 | rq->adapter = adapter; | |
2700 | err = vmxnet3_rq_create(rq, adapter); | |
2701 | if (err) { | |
2702 | if (i == 0) { | |
2703 | netdev_err(adapter->netdev, | |
2704 | "Could not allocate any rx queues. " | |
2705 | "Aborting.\n"); | |
2706 | goto queue_err; | |
2707 | } else { | |
2708 | netdev_info(adapter->netdev, | |
2709 | "Number of rx queues changed " | |
2710 | "to : %d.\n", i); | |
2711 | adapter->num_rx_queues = i; | |
2712 | err = 0; | |
2713 | break; | |
2714 | } | |
2715 | } | |
2716 | } | |
2717 | return err; | |
2718 | queue_err: | |
2719 | vmxnet3_tq_destroy_all(adapter); | |
2720 | return err; | |
2721 | } | |
2722 | ||
2723 | static int | |
2724 | vmxnet3_open(struct net_device *netdev) | |
2725 | { | |
2726 | struct vmxnet3_adapter *adapter; | |
2727 | int err, i; | |
2728 | ||
2729 | adapter = netdev_priv(netdev); | |
2730 | ||
2731 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2732 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
2733 | ||
2734 | err = vmxnet3_create_queues(adapter, adapter->tx_ring_size, | |
2735 | adapter->rx_ring_size, | |
2736 | adapter->rx_ring2_size); | |
2737 | if (err) | |
2738 | goto queue_err; | |
2739 | ||
2740 | err = vmxnet3_activate_dev(adapter); | |
2741 | if (err) | |
2742 | goto activate_err; | |
2743 | ||
2744 | return 0; | |
2745 | ||
2746 | activate_err: | |
2747 | vmxnet3_rq_destroy_all(adapter); | |
2748 | vmxnet3_tq_destroy_all(adapter); | |
2749 | queue_err: | |
2750 | return err; | |
2751 | } | |
2752 | ||
2753 | ||
2754 | static int | |
2755 | vmxnet3_close(struct net_device *netdev) | |
2756 | { | |
2757 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2758 | ||
2759 | /* | |
2760 | * Reset_work may be in the middle of resetting the device, wait for its | |
2761 | * completion. | |
2762 | */ | |
2763 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2764 | msleep(1); | |
2765 | ||
2766 | vmxnet3_quiesce_dev(adapter); | |
2767 | ||
2768 | vmxnet3_rq_destroy_all(adapter); | |
2769 | vmxnet3_tq_destroy_all(adapter); | |
2770 | ||
2771 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2772 | ||
2773 | ||
2774 | return 0; | |
2775 | } | |
2776 | ||
2777 | ||
2778 | void | |
2779 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2780 | { | |
2781 | int i; | |
2782 | ||
2783 | /* | |
2784 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2785 | * vmxnet3_close() will deadlock. | |
2786 | */ | |
2787 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2788 | ||
2789 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
2790 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2791 | napi_enable(&adapter->rx_queue[i].napi); | |
2792 | dev_close(adapter->netdev); | |
2793 | } | |
2794 | ||
2795 | ||
2796 | static int | |
2797 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2798 | { | |
2799 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2800 | int err = 0; | |
2801 | ||
2802 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2803 | return -EINVAL; | |
2804 | ||
2805 | netdev->mtu = new_mtu; | |
2806 | ||
2807 | /* | |
2808 | * Reset_work may be in the middle of resetting the device, wait for its | |
2809 | * completion. | |
2810 | */ | |
2811 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2812 | msleep(1); | |
2813 | ||
2814 | if (netif_running(netdev)) { | |
2815 | vmxnet3_quiesce_dev(adapter); | |
2816 | vmxnet3_reset_dev(adapter); | |
2817 | ||
2818 | /* we need to re-create the rx queue based on the new mtu */ | |
2819 | vmxnet3_rq_destroy_all(adapter); | |
2820 | vmxnet3_adjust_rx_ring_size(adapter); | |
2821 | err = vmxnet3_rq_create_all(adapter); | |
2822 | if (err) { | |
2823 | netdev_err(netdev, | |
2824 | "failed to re-create rx queues, " | |
2825 | " error %d. Closing it.\n", err); | |
2826 | goto out; | |
2827 | } | |
2828 | ||
2829 | err = vmxnet3_activate_dev(adapter); | |
2830 | if (err) { | |
2831 | netdev_err(netdev, | |
2832 | "failed to re-activate, error %d. " | |
2833 | "Closing it\n", err); | |
2834 | goto out; | |
2835 | } | |
2836 | } | |
2837 | ||
2838 | out: | |
2839 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2840 | if (err) | |
2841 | vmxnet3_force_close(adapter); | |
2842 | ||
2843 | return err; | |
2844 | } | |
2845 | ||
2846 | ||
2847 | static void | |
2848 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2849 | { | |
2850 | struct net_device *netdev = adapter->netdev; | |
2851 | ||
2852 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | | |
2853 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | | |
2854 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
2855 | NETIF_F_LRO; | |
2856 | if (dma64) | |
2857 | netdev->hw_features |= NETIF_F_HIGHDMA; | |
2858 | netdev->vlan_features = netdev->hw_features & | |
2859 | ~(NETIF_F_HW_VLAN_CTAG_TX | | |
2860 | NETIF_F_HW_VLAN_CTAG_RX); | |
2861 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; | |
2862 | } | |
2863 | ||
2864 | ||
2865 | static void | |
2866 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2867 | { | |
2868 | u32 tmp; | |
2869 | ||
2870 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2871 | *(u32 *)mac = tmp; | |
2872 | ||
2873 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2874 | mac[4] = tmp & 0xff; | |
2875 | mac[5] = (tmp >> 8) & 0xff; | |
2876 | } | |
2877 | ||
2878 | #ifdef CONFIG_PCI_MSI | |
2879 | ||
2880 | /* | |
2881 | * Enable MSIx vectors. | |
2882 | * Returns : | |
2883 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required | |
2884 | * were enabled. | |
2885 | * number of vectors which were enabled otherwise (this number is greater | |
2886 | * than VMXNET3_LINUX_MIN_MSIX_VECT) | |
2887 | */ | |
2888 | ||
2889 | static int | |
2890 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec) | |
2891 | { | |
2892 | int ret = pci_enable_msix_range(adapter->pdev, | |
2893 | adapter->intr.msix_entries, nvec, nvec); | |
2894 | ||
2895 | if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) { | |
2896 | dev_err(&adapter->netdev->dev, | |
2897 | "Failed to enable %d MSI-X, trying %d\n", | |
2898 | nvec, VMXNET3_LINUX_MIN_MSIX_VECT); | |
2899 | ||
2900 | ret = pci_enable_msix_range(adapter->pdev, | |
2901 | adapter->intr.msix_entries, | |
2902 | VMXNET3_LINUX_MIN_MSIX_VECT, | |
2903 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
2904 | } | |
2905 | ||
2906 | if (ret < 0) { | |
2907 | dev_err(&adapter->netdev->dev, | |
2908 | "Failed to enable MSI-X, error: %d\n", ret); | |
2909 | } | |
2910 | ||
2911 | return ret; | |
2912 | } | |
2913 | ||
2914 | ||
2915 | #endif /* CONFIG_PCI_MSI */ | |
2916 | ||
2917 | static void | |
2918 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2919 | { | |
2920 | u32 cfg; | |
2921 | unsigned long flags; | |
2922 | ||
2923 | /* intr settings */ | |
2924 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2925 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2926 | VMXNET3_CMD_GET_CONF_INTR); | |
2927 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2928 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2929 | adapter->intr.type = cfg & 0x3; | |
2930 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2931 | ||
2932 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
2933 | adapter->intr.type = VMXNET3_IT_MSIX; | |
2934 | } | |
2935 | ||
2936 | #ifdef CONFIG_PCI_MSI | |
2937 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
2938 | int i, nvec; | |
2939 | ||
2940 | nvec = adapter->share_intr == VMXNET3_INTR_TXSHARE ? | |
2941 | 1 : adapter->num_tx_queues; | |
2942 | nvec += adapter->share_intr == VMXNET3_INTR_BUDDYSHARE ? | |
2943 | 0 : adapter->num_rx_queues; | |
2944 | nvec += 1; /* for link event */ | |
2945 | nvec = nvec > VMXNET3_LINUX_MIN_MSIX_VECT ? | |
2946 | nvec : VMXNET3_LINUX_MIN_MSIX_VECT; | |
2947 | ||
2948 | for (i = 0; i < nvec; i++) | |
2949 | adapter->intr.msix_entries[i].entry = i; | |
2950 | ||
2951 | nvec = vmxnet3_acquire_msix_vectors(adapter, nvec); | |
2952 | if (nvec < 0) | |
2953 | goto msix_err; | |
2954 | ||
2955 | /* If we cannot allocate one MSIx vector per queue | |
2956 | * then limit the number of rx queues to 1 | |
2957 | */ | |
2958 | if (nvec == VMXNET3_LINUX_MIN_MSIX_VECT) { | |
2959 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE | |
2960 | || adapter->num_rx_queues != 1) { | |
2961 | adapter->share_intr = VMXNET3_INTR_TXSHARE; | |
2962 | netdev_err(adapter->netdev, | |
2963 | "Number of rx queues : 1\n"); | |
2964 | adapter->num_rx_queues = 1; | |
2965 | } | |
2966 | } | |
2967 | ||
2968 | adapter->intr.num_intrs = nvec; | |
2969 | return; | |
2970 | ||
2971 | msix_err: | |
2972 | /* If we cannot allocate MSIx vectors use only one rx queue */ | |
2973 | dev_info(&adapter->pdev->dev, | |
2974 | "Failed to enable MSI-X, error %d. " | |
2975 | "Limiting #rx queues to 1, try MSI.\n", nvec); | |
2976 | ||
2977 | adapter->intr.type = VMXNET3_IT_MSI; | |
2978 | } | |
2979 | ||
2980 | if (adapter->intr.type == VMXNET3_IT_MSI) { | |
2981 | if (!pci_enable_msi(adapter->pdev)) { | |
2982 | adapter->num_rx_queues = 1; | |
2983 | adapter->intr.num_intrs = 1; | |
2984 | return; | |
2985 | } | |
2986 | } | |
2987 | #endif /* CONFIG_PCI_MSI */ | |
2988 | ||
2989 | adapter->num_rx_queues = 1; | |
2990 | dev_info(&adapter->netdev->dev, | |
2991 | "Using INTx interrupt, #Rx queues: 1.\n"); | |
2992 | adapter->intr.type = VMXNET3_IT_INTX; | |
2993 | ||
2994 | /* INT-X related setting */ | |
2995 | adapter->intr.num_intrs = 1; | |
2996 | } | |
2997 | ||
2998 | ||
2999 | static void | |
3000 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
3001 | { | |
3002 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
3003 | pci_disable_msix(adapter->pdev); | |
3004 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
3005 | pci_disable_msi(adapter->pdev); | |
3006 | else | |
3007 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
3008 | } | |
3009 | ||
3010 | ||
3011 | static void | |
3012 | vmxnet3_tx_timeout(struct net_device *netdev) | |
3013 | { | |
3014 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3015 | adapter->tx_timeout_count++; | |
3016 | ||
3017 | netdev_err(adapter->netdev, "tx hang\n"); | |
3018 | schedule_work(&adapter->work); | |
3019 | netif_wake_queue(adapter->netdev); | |
3020 | } | |
3021 | ||
3022 | ||
3023 | static void | |
3024 | vmxnet3_reset_work(struct work_struct *data) | |
3025 | { | |
3026 | struct vmxnet3_adapter *adapter; | |
3027 | ||
3028 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
3029 | ||
3030 | /* if another thread is resetting the device, no need to proceed */ | |
3031 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
3032 | return; | |
3033 | ||
3034 | /* if the device is closed, we must leave it alone */ | |
3035 | rtnl_lock(); | |
3036 | if (netif_running(adapter->netdev)) { | |
3037 | netdev_notice(adapter->netdev, "resetting\n"); | |
3038 | vmxnet3_quiesce_dev(adapter); | |
3039 | vmxnet3_reset_dev(adapter); | |
3040 | vmxnet3_activate_dev(adapter); | |
3041 | } else { | |
3042 | netdev_info(adapter->netdev, "already closed\n"); | |
3043 | } | |
3044 | rtnl_unlock(); | |
3045 | ||
3046 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3047 | } | |
3048 | ||
3049 | ||
3050 | static int | |
3051 | vmxnet3_probe_device(struct pci_dev *pdev, | |
3052 | const struct pci_device_id *id) | |
3053 | { | |
3054 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
3055 | .ndo_open = vmxnet3_open, | |
3056 | .ndo_stop = vmxnet3_close, | |
3057 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
3058 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
3059 | .ndo_change_mtu = vmxnet3_change_mtu, | |
3060 | .ndo_set_features = vmxnet3_set_features, | |
3061 | .ndo_get_stats64 = vmxnet3_get_stats64, | |
3062 | .ndo_tx_timeout = vmxnet3_tx_timeout, | |
3063 | .ndo_set_rx_mode = vmxnet3_set_mc, | |
3064 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, | |
3065 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
3066 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3067 | .ndo_poll_controller = vmxnet3_netpoll, | |
3068 | #endif | |
3069 | }; | |
3070 | int err; | |
3071 | bool dma64 = false; /* stupid gcc */ | |
3072 | u32 ver; | |
3073 | struct net_device *netdev; | |
3074 | struct vmxnet3_adapter *adapter; | |
3075 | u8 mac[ETH_ALEN]; | |
3076 | int size; | |
3077 | int num_tx_queues; | |
3078 | int num_rx_queues; | |
3079 | ||
3080 | if (!pci_msi_enabled()) | |
3081 | enable_mq = 0; | |
3082 | ||
3083 | #ifdef VMXNET3_RSS | |
3084 | if (enable_mq) | |
3085 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3086 | (int)num_online_cpus()); | |
3087 | else | |
3088 | #endif | |
3089 | num_rx_queues = 1; | |
3090 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); | |
3091 | ||
3092 | if (enable_mq) | |
3093 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
3094 | (int)num_online_cpus()); | |
3095 | else | |
3096 | num_tx_queues = 1; | |
3097 | ||
3098 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); | |
3099 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), | |
3100 | max(num_tx_queues, num_rx_queues)); | |
3101 | dev_info(&pdev->dev, | |
3102 | "# of Tx queues : %d, # of Rx queues : %d\n", | |
3103 | num_tx_queues, num_rx_queues); | |
3104 | ||
3105 | if (!netdev) | |
3106 | return -ENOMEM; | |
3107 | ||
3108 | pci_set_drvdata(pdev, netdev); | |
3109 | adapter = netdev_priv(netdev); | |
3110 | adapter->netdev = netdev; | |
3111 | adapter->pdev = pdev; | |
3112 | ||
3113 | adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; | |
3114 | adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; | |
3115 | adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; | |
3116 | ||
3117 | spin_lock_init(&adapter->cmd_lock); | |
3118 | adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter, | |
3119 | sizeof(struct vmxnet3_adapter), | |
3120 | PCI_DMA_TODEVICE); | |
3121 | if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) { | |
3122 | dev_err(&pdev->dev, "Failed to map dma\n"); | |
3123 | err = -EFAULT; | |
3124 | goto err_dma_map; | |
3125 | } | |
3126 | adapter->shared = dma_alloc_coherent( | |
3127 | &adapter->pdev->dev, | |
3128 | sizeof(struct Vmxnet3_DriverShared), | |
3129 | &adapter->shared_pa, GFP_KERNEL); | |
3130 | if (!adapter->shared) { | |
3131 | dev_err(&pdev->dev, "Failed to allocate memory\n"); | |
3132 | err = -ENOMEM; | |
3133 | goto err_alloc_shared; | |
3134 | } | |
3135 | ||
3136 | adapter->num_rx_queues = num_rx_queues; | |
3137 | adapter->num_tx_queues = num_tx_queues; | |
3138 | adapter->rx_buf_per_pkt = 1; | |
3139 | ||
3140 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3141 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
3142 | adapter->tqd_start = dma_alloc_coherent(&adapter->pdev->dev, size, | |
3143 | &adapter->queue_desc_pa, | |
3144 | GFP_KERNEL); | |
3145 | ||
3146 | if (!adapter->tqd_start) { | |
3147 | dev_err(&pdev->dev, "Failed to allocate memory\n"); | |
3148 | err = -ENOMEM; | |
3149 | goto err_alloc_queue_desc; | |
3150 | } | |
3151 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + | |
3152 | adapter->num_tx_queues); | |
3153 | ||
3154 | adapter->pm_conf = dma_alloc_coherent(&adapter->pdev->dev, | |
3155 | sizeof(struct Vmxnet3_PMConf), | |
3156 | &adapter->pm_conf_pa, | |
3157 | GFP_KERNEL); | |
3158 | if (adapter->pm_conf == NULL) { | |
3159 | err = -ENOMEM; | |
3160 | goto err_alloc_pm; | |
3161 | } | |
3162 | ||
3163 | #ifdef VMXNET3_RSS | |
3164 | ||
3165 | adapter->rss_conf = dma_alloc_coherent(&adapter->pdev->dev, | |
3166 | sizeof(struct UPT1_RSSConf), | |
3167 | &adapter->rss_conf_pa, | |
3168 | GFP_KERNEL); | |
3169 | if (adapter->rss_conf == NULL) { | |
3170 | err = -ENOMEM; | |
3171 | goto err_alloc_rss; | |
3172 | } | |
3173 | #endif /* VMXNET3_RSS */ | |
3174 | ||
3175 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); | |
3176 | if (err < 0) | |
3177 | goto err_alloc_pci; | |
3178 | ||
3179 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
3180 | if (ver & 2) { | |
3181 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 2); | |
3182 | adapter->version = 2; | |
3183 | } else if (ver & 1) { | |
3184 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
3185 | adapter->version = 1; | |
3186 | } else { | |
3187 | dev_err(&pdev->dev, | |
3188 | "Incompatible h/w version (0x%x) for adapter\n", ver); | |
3189 | err = -EBUSY; | |
3190 | goto err_ver; | |
3191 | } | |
3192 | dev_dbg(&pdev->dev, "Using device version %d\n", adapter->version); | |
3193 | ||
3194 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3195 | if (ver & 1) { | |
3196 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3197 | } else { | |
3198 | dev_err(&pdev->dev, | |
3199 | "Incompatible upt version (0x%x) for adapter\n", ver); | |
3200 | err = -EBUSY; | |
3201 | goto err_ver; | |
3202 | } | |
3203 | ||
3204 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
3205 | vmxnet3_declare_features(adapter, dma64); | |
3206 | ||
3207 | if (adapter->num_tx_queues == adapter->num_rx_queues) | |
3208 | adapter->share_intr = VMXNET3_INTR_BUDDYSHARE; | |
3209 | else | |
3210 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; | |
3211 | ||
3212 | vmxnet3_alloc_intr_resources(adapter); | |
3213 | ||
3214 | #ifdef VMXNET3_RSS | |
3215 | if (adapter->num_rx_queues > 1 && | |
3216 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3217 | adapter->rss = true; | |
3218 | netdev->hw_features |= NETIF_F_RXHASH; | |
3219 | netdev->features |= NETIF_F_RXHASH; | |
3220 | dev_dbg(&pdev->dev, "RSS is enabled.\n"); | |
3221 | } else { | |
3222 | adapter->rss = false; | |
3223 | } | |
3224 | #endif | |
3225 | ||
3226 | vmxnet3_read_mac_addr(adapter, mac); | |
3227 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3228 | ||
3229 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
3230 | vmxnet3_set_ethtool_ops(netdev); | |
3231 | netdev->watchdog_timeo = 5 * HZ; | |
3232 | ||
3233 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
3234 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
3235 | ||
3236 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
3237 | int i; | |
3238 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3239 | netif_napi_add(adapter->netdev, | |
3240 | &adapter->rx_queue[i].napi, | |
3241 | vmxnet3_poll_rx_only, 64); | |
3242 | } | |
3243 | } else { | |
3244 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3245 | vmxnet3_poll, 64); | |
3246 | } | |
3247 | ||
3248 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3249 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3250 | ||
3251 | netif_carrier_off(netdev); | |
3252 | err = register_netdev(netdev); | |
3253 | ||
3254 | if (err) { | |
3255 | dev_err(&pdev->dev, "Failed to register adapter\n"); | |
3256 | goto err_register; | |
3257 | } | |
3258 | ||
3259 | vmxnet3_check_link(adapter, false); | |
3260 | return 0; | |
3261 | ||
3262 | err_register: | |
3263 | vmxnet3_free_intr_resources(adapter); | |
3264 | err_ver: | |
3265 | vmxnet3_free_pci_resources(adapter); | |
3266 | err_alloc_pci: | |
3267 | #ifdef VMXNET3_RSS | |
3268 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), | |
3269 | adapter->rss_conf, adapter->rss_conf_pa); | |
3270 | err_alloc_rss: | |
3271 | #endif | |
3272 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), | |
3273 | adapter->pm_conf, adapter->pm_conf_pa); | |
3274 | err_alloc_pm: | |
3275 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, | |
3276 | adapter->queue_desc_pa); | |
3277 | err_alloc_queue_desc: | |
3278 | dma_free_coherent(&adapter->pdev->dev, | |
3279 | sizeof(struct Vmxnet3_DriverShared), | |
3280 | adapter->shared, adapter->shared_pa); | |
3281 | err_alloc_shared: | |
3282 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, | |
3283 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
3284 | err_dma_map: | |
3285 | free_netdev(netdev); | |
3286 | return err; | |
3287 | } | |
3288 | ||
3289 | ||
3290 | static void | |
3291 | vmxnet3_remove_device(struct pci_dev *pdev) | |
3292 | { | |
3293 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3294 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3295 | int size = 0; | |
3296 | int num_rx_queues; | |
3297 | ||
3298 | #ifdef VMXNET3_RSS | |
3299 | if (enable_mq) | |
3300 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3301 | (int)num_online_cpus()); | |
3302 | else | |
3303 | #endif | |
3304 | num_rx_queues = 1; | |
3305 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); | |
3306 | ||
3307 | cancel_work_sync(&adapter->work); | |
3308 | ||
3309 | unregister_netdev(netdev); | |
3310 | ||
3311 | vmxnet3_free_intr_resources(adapter); | |
3312 | vmxnet3_free_pci_resources(adapter); | |
3313 | #ifdef VMXNET3_RSS | |
3314 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), | |
3315 | adapter->rss_conf, adapter->rss_conf_pa); | |
3316 | #endif | |
3317 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), | |
3318 | adapter->pm_conf, adapter->pm_conf_pa); | |
3319 | ||
3320 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3321 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
3322 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, | |
3323 | adapter->queue_desc_pa); | |
3324 | dma_free_coherent(&adapter->pdev->dev, | |
3325 | sizeof(struct Vmxnet3_DriverShared), | |
3326 | adapter->shared, adapter->shared_pa); | |
3327 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, | |
3328 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
3329 | free_netdev(netdev); | |
3330 | } | |
3331 | ||
3332 | static void vmxnet3_shutdown_device(struct pci_dev *pdev) | |
3333 | { | |
3334 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3335 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3336 | unsigned long flags; | |
3337 | ||
3338 | /* Reset_work may be in the middle of resetting the device, wait for its | |
3339 | * completion. | |
3340 | */ | |
3341 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
3342 | msleep(1); | |
3343 | ||
3344 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, | |
3345 | &adapter->state)) { | |
3346 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3347 | return; | |
3348 | } | |
3349 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3350 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3351 | VMXNET3_CMD_QUIESCE_DEV); | |
3352 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3353 | vmxnet3_disable_all_intrs(adapter); | |
3354 | ||
3355 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3356 | } | |
3357 | ||
3358 | ||
3359 | #ifdef CONFIG_PM | |
3360 | ||
3361 | static int | |
3362 | vmxnet3_suspend(struct device *device) | |
3363 | { | |
3364 | struct pci_dev *pdev = to_pci_dev(device); | |
3365 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3366 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3367 | struct Vmxnet3_PMConf *pmConf; | |
3368 | struct ethhdr *ehdr; | |
3369 | struct arphdr *ahdr; | |
3370 | u8 *arpreq; | |
3371 | struct in_device *in_dev; | |
3372 | struct in_ifaddr *ifa; | |
3373 | unsigned long flags; | |
3374 | int i = 0; | |
3375 | ||
3376 | if (!netif_running(netdev)) | |
3377 | return 0; | |
3378 | ||
3379 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3380 | napi_disable(&adapter->rx_queue[i].napi); | |
3381 | ||
3382 | vmxnet3_disable_all_intrs(adapter); | |
3383 | vmxnet3_free_irqs(adapter); | |
3384 | vmxnet3_free_intr_resources(adapter); | |
3385 | ||
3386 | netif_device_detach(netdev); | |
3387 | netif_tx_stop_all_queues(netdev); | |
3388 | ||
3389 | /* Create wake-up filters. */ | |
3390 | pmConf = adapter->pm_conf; | |
3391 | memset(pmConf, 0, sizeof(*pmConf)); | |
3392 | ||
3393 | if (adapter->wol & WAKE_UCAST) { | |
3394 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3395 | pmConf->filters[i].maskSize = 1; | |
3396 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3397 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3398 | ||
3399 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
3400 | i++; | |
3401 | } | |
3402 | ||
3403 | if (adapter->wol & WAKE_ARP) { | |
3404 | in_dev = in_dev_get(netdev); | |
3405 | if (!in_dev) | |
3406 | goto skip_arp; | |
3407 | ||
3408 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
3409 | if (!ifa) | |
3410 | goto skip_arp; | |
3411 | ||
3412 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3413 | sizeof(struct arphdr) + /* ARP header */ | |
3414 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3415 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3416 | pmConf->filters[i].maskSize = | |
3417 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3418 | ||
3419 | /* ETH_P_ARP in Ethernet header. */ | |
3420 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3421 | ehdr->h_proto = htons(ETH_P_ARP); | |
3422 | ||
3423 | /* ARPOP_REQUEST in ARP header. */ | |
3424 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3425 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3426 | arpreq = (u8 *)(ahdr + 1); | |
3427 | ||
3428 | /* The Unicast IPv4 address in 'tip' field. */ | |
3429 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
3430 | *(u32 *)arpreq = ifa->ifa_address; | |
3431 | ||
3432 | /* The mask for the relevant bits. */ | |
3433 | pmConf->filters[i].mask[0] = 0x00; | |
3434 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3435 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3436 | pmConf->filters[i].mask[3] = 0x00; | |
3437 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3438 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
3439 | in_dev_put(in_dev); | |
3440 | ||
3441 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
3442 | i++; | |
3443 | } | |
3444 | ||
3445 | skip_arp: | |
3446 | if (adapter->wol & WAKE_MAGIC) | |
3447 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; | |
3448 | ||
3449 | pmConf->numFilters = i; | |
3450 | ||
3451 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); | |
3452 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3453 | *pmConf)); | |
3454 | adapter->shared->devRead.pmConfDesc.confPA = | |
3455 | cpu_to_le64(adapter->pm_conf_pa); | |
3456 | ||
3457 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3458 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3459 | VMXNET3_CMD_UPDATE_PMCFG); | |
3460 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3461 | ||
3462 | pci_save_state(pdev); | |
3463 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3464 | adapter->wol); | |
3465 | pci_disable_device(pdev); | |
3466 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3467 | ||
3468 | return 0; | |
3469 | } | |
3470 | ||
3471 | ||
3472 | static int | |
3473 | vmxnet3_resume(struct device *device) | |
3474 | { | |
3475 | int err; | |
3476 | unsigned long flags; | |
3477 | struct pci_dev *pdev = to_pci_dev(device); | |
3478 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3479 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3480 | ||
3481 | if (!netif_running(netdev)) | |
3482 | return 0; | |
3483 | ||
3484 | pci_set_power_state(pdev, PCI_D0); | |
3485 | pci_restore_state(pdev); | |
3486 | err = pci_enable_device_mem(pdev); | |
3487 | if (err != 0) | |
3488 | return err; | |
3489 | ||
3490 | pci_enable_wake(pdev, PCI_D0, 0); | |
3491 | ||
3492 | vmxnet3_alloc_intr_resources(adapter); | |
3493 | ||
3494 | /* During hibernate and suspend, device has to be reinitialized as the | |
3495 | * device state need not be preserved. | |
3496 | */ | |
3497 | ||
3498 | /* Need not check adapter state as other reset tasks cannot run during | |
3499 | * device resume. | |
3500 | */ | |
3501 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3502 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3503 | VMXNET3_CMD_QUIESCE_DEV); | |
3504 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3505 | vmxnet3_tq_cleanup_all(adapter); | |
3506 | vmxnet3_rq_cleanup_all(adapter); | |
3507 | ||
3508 | vmxnet3_reset_dev(adapter); | |
3509 | err = vmxnet3_activate_dev(adapter); | |
3510 | if (err != 0) { | |
3511 | netdev_err(netdev, | |
3512 | "failed to re-activate on resume, error: %d", err); | |
3513 | vmxnet3_force_close(adapter); | |
3514 | return err; | |
3515 | } | |
3516 | netif_device_attach(netdev); | |
3517 | ||
3518 | return 0; | |
3519 | } | |
3520 | ||
3521 | static const struct dev_pm_ops vmxnet3_pm_ops = { | |
3522 | .suspend = vmxnet3_suspend, | |
3523 | .resume = vmxnet3_resume, | |
3524 | .freeze = vmxnet3_suspend, | |
3525 | .restore = vmxnet3_resume, | |
3526 | }; | |
3527 | #endif | |
3528 | ||
3529 | static struct pci_driver vmxnet3_driver = { | |
3530 | .name = vmxnet3_driver_name, | |
3531 | .id_table = vmxnet3_pciid_table, | |
3532 | .probe = vmxnet3_probe_device, | |
3533 | .remove = vmxnet3_remove_device, | |
3534 | .shutdown = vmxnet3_shutdown_device, | |
3535 | #ifdef CONFIG_PM | |
3536 | .driver.pm = &vmxnet3_pm_ops, | |
3537 | #endif | |
3538 | }; | |
3539 | ||
3540 | ||
3541 | static int __init | |
3542 | vmxnet3_init_module(void) | |
3543 | { | |
3544 | pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC, | |
3545 | VMXNET3_DRIVER_VERSION_REPORT); | |
3546 | return pci_register_driver(&vmxnet3_driver); | |
3547 | } | |
3548 | ||
3549 | module_init(vmxnet3_init_module); | |
3550 | ||
3551 | ||
3552 | static void | |
3553 | vmxnet3_exit_module(void) | |
3554 | { | |
3555 | pci_unregister_driver(&vmxnet3_driver); | |
3556 | } | |
3557 | ||
3558 | module_exit(vmxnet3_exit_module); | |
3559 | ||
3560 | MODULE_AUTHOR("VMware, Inc."); | |
3561 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3562 | MODULE_LICENSE("GPL v2"); | |
3563 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |