]>
Commit | Line | Data |
---|---|---|
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 DEFINE_PCI_DEVICE_TABLE(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 | pci_unmap_single(pdev, tbi->dma_addr, tbi->len, | |
317 | PCI_DMA_TODEVICE); | |
318 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
319 | pci_unmap_page(pdev, 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 | pci_free_consistent(adapter->pdev, 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 | pci_free_consistent(adapter->pdev, 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 | pci_free_consistent(adapter->pdev, 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 | kfree(tq->buf_info); | |
450 | tq->buf_info = NULL; | |
451 | } | |
452 | ||
453 | ||
454 | /* Destroy all tx queues */ | |
455 | void | |
456 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
457 | { | |
458 | int i; | |
459 | ||
460 | for (i = 0; i < adapter->num_tx_queues; i++) | |
461 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
462 | } | |
463 | ||
464 | ||
465 | static void | |
466 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
467 | struct vmxnet3_adapter *adapter) | |
468 | { | |
469 | int i; | |
470 | ||
471 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
472 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
473 | sizeof(struct Vmxnet3_TxDesc)); | |
474 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
475 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
476 | ||
477 | memset(tq->data_ring.base, 0, tq->data_ring.size * | |
478 | sizeof(struct Vmxnet3_TxDataDesc)); | |
479 | ||
480 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
481 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
482 | sizeof(struct Vmxnet3_TxCompDesc)); | |
483 | tq->comp_ring.next2proc = 0; | |
484 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
485 | ||
486 | /* reset the bookkeeping data */ | |
487 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
488 | for (i = 0; i < tq->tx_ring.size; i++) | |
489 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
490 | ||
491 | /* stats are not reset */ | |
492 | } | |
493 | ||
494 | ||
495 | static int | |
496 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
497 | struct vmxnet3_adapter *adapter) | |
498 | { | |
499 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || | |
500 | tq->comp_ring.base || tq->buf_info); | |
501 | ||
502 | tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size | |
503 | * sizeof(struct Vmxnet3_TxDesc), | |
504 | &tq->tx_ring.basePA); | |
505 | if (!tq->tx_ring.base) { | |
506 | netdev_err(adapter->netdev, "failed to allocate tx ring\n"); | |
507 | goto err; | |
508 | } | |
509 | ||
510 | tq->data_ring.base = pci_alloc_consistent(adapter->pdev, | |
511 | tq->data_ring.size * | |
512 | sizeof(struct Vmxnet3_TxDataDesc), | |
513 | &tq->data_ring.basePA); | |
514 | if (!tq->data_ring.base) { | |
515 | netdev_err(adapter->netdev, "failed to allocate data ring\n"); | |
516 | goto err; | |
517 | } | |
518 | ||
519 | tq->comp_ring.base = pci_alloc_consistent(adapter->pdev, | |
520 | tq->comp_ring.size * | |
521 | sizeof(struct Vmxnet3_TxCompDesc), | |
522 | &tq->comp_ring.basePA); | |
523 | if (!tq->comp_ring.base) { | |
524 | netdev_err(adapter->netdev, "failed to allocate tx comp ring\n"); | |
525 | goto err; | |
526 | } | |
527 | ||
528 | tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]), | |
529 | GFP_KERNEL); | |
530 | if (!tq->buf_info) | |
531 | goto err; | |
532 | ||
533 | return 0; | |
534 | ||
535 | err: | |
536 | vmxnet3_tq_destroy(tq, adapter); | |
537 | return -ENOMEM; | |
538 | } | |
539 | ||
540 | static void | |
541 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
542 | { | |
543 | int i; | |
544 | ||
545 | for (i = 0; i < adapter->num_tx_queues; i++) | |
546 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
547 | } | |
548 | ||
549 | /* | |
550 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
551 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
552 | * are allocated or allocation fails | |
553 | */ | |
554 | ||
555 | static int | |
556 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
557 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
558 | { | |
559 | int num_allocated = 0; | |
560 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
561 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
562 | u32 val; | |
563 | ||
564 | while (num_allocated <= num_to_alloc) { | |
565 | struct vmxnet3_rx_buf_info *rbi; | |
566 | union Vmxnet3_GenericDesc *gd; | |
567 | ||
568 | rbi = rbi_base + ring->next2fill; | |
569 | gd = ring->base + ring->next2fill; | |
570 | ||
571 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
572 | if (rbi->skb == NULL) { | |
573 | rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev, | |
574 | rbi->len, | |
575 | GFP_KERNEL); | |
576 | if (unlikely(rbi->skb == NULL)) { | |
577 | rq->stats.rx_buf_alloc_failure++; | |
578 | break; | |
579 | } | |
580 | ||
581 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
582 | rbi->skb->data, rbi->len, | |
583 | PCI_DMA_FROMDEVICE); | |
584 | } else { | |
585 | /* rx buffer skipped by the device */ | |
586 | } | |
587 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
588 | } else { | |
589 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
590 | rbi->len != PAGE_SIZE); | |
591 | ||
592 | if (rbi->page == NULL) { | |
593 | rbi->page = alloc_page(GFP_ATOMIC); | |
594 | if (unlikely(rbi->page == NULL)) { | |
595 | rq->stats.rx_buf_alloc_failure++; | |
596 | break; | |
597 | } | |
598 | rbi->dma_addr = pci_map_page(adapter->pdev, | |
599 | rbi->page, 0, PAGE_SIZE, | |
600 | PCI_DMA_FROMDEVICE); | |
601 | } else { | |
602 | /* rx buffers skipped by the device */ | |
603 | } | |
604 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
605 | } | |
606 | ||
607 | BUG_ON(rbi->dma_addr == 0); | |
608 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); | |
609 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) | |
610 | | val | rbi->len); | |
611 | ||
612 | /* Fill the last buffer but dont mark it ready, or else the | |
613 | * device will think that the queue is full */ | |
614 | if (num_allocated == num_to_alloc) | |
615 | break; | |
616 | ||
617 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
618 | num_allocated++; | |
619 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
620 | } | |
621 | ||
622 | netdev_dbg(adapter->netdev, | |
623 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n", | |
624 | num_allocated, ring->next2fill, ring->next2comp); | |
625 | ||
626 | /* so that the device can distinguish a full ring and an empty ring */ | |
627 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
628 | ||
629 | return num_allocated; | |
630 | } | |
631 | ||
632 | ||
633 | static void | |
634 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
635 | struct vmxnet3_rx_buf_info *rbi) | |
636 | { | |
637 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
638 | skb_shinfo(skb)->nr_frags; | |
639 | ||
640 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
641 | ||
642 | __skb_frag_set_page(frag, rbi->page); | |
643 | frag->page_offset = 0; | |
644 | skb_frag_size_set(frag, rcd->len); | |
645 | skb->data_len += rcd->len; | |
646 | skb->truesize += PAGE_SIZE; | |
647 | skb_shinfo(skb)->nr_frags++; | |
648 | } | |
649 | ||
650 | ||
651 | static void | |
652 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
653 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
654 | struct vmxnet3_adapter *adapter) | |
655 | { | |
656 | u32 dw2, len; | |
657 | unsigned long buf_offset; | |
658 | int i; | |
659 | union Vmxnet3_GenericDesc *gdesc; | |
660 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
661 | ||
662 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
663 | ||
664 | /* use the previous gen bit for the SOP desc */ | |
665 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
666 | ||
667 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
668 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
669 | ||
670 | /* no need to map the buffer if headers are copied */ | |
671 | if (ctx->copy_size) { | |
672 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + | |
673 | tq->tx_ring.next2fill * | |
674 | sizeof(struct Vmxnet3_TxDataDesc)); | |
675 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); | |
676 | ctx->sop_txd->dword[3] = 0; | |
677 | ||
678 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
679 | tbi->map_type = VMXNET3_MAP_NONE; | |
680 | ||
681 | netdev_dbg(adapter->netdev, | |
682 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
683 | tq->tx_ring.next2fill, | |
684 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
685 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); | |
686 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
687 | ||
688 | /* use the right gen for non-SOP desc */ | |
689 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
690 | } | |
691 | ||
692 | /* linear part can use multiple tx desc if it's big */ | |
693 | len = skb_headlen(skb) - ctx->copy_size; | |
694 | buf_offset = ctx->copy_size; | |
695 | while (len) { | |
696 | u32 buf_size; | |
697 | ||
698 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
699 | buf_size = len; | |
700 | dw2 |= len; | |
701 | } else { | |
702 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
703 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
704 | } | |
705 | ||
706 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
707 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
708 | tbi->dma_addr = pci_map_single(adapter->pdev, | |
709 | skb->data + buf_offset, buf_size, | |
710 | PCI_DMA_TODEVICE); | |
711 | ||
712 | tbi->len = buf_size; | |
713 | ||
714 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
715 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
716 | ||
717 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); | |
718 | gdesc->dword[2] = cpu_to_le32(dw2); | |
719 | gdesc->dword[3] = 0; | |
720 | ||
721 | netdev_dbg(adapter->netdev, | |
722 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
723 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), | |
724 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
725 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
726 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
727 | ||
728 | len -= buf_size; | |
729 | buf_offset += buf_size; | |
730 | } | |
731 | ||
732 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
733 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
734 | u32 buf_size; | |
735 | ||
736 | buf_offset = 0; | |
737 | len = skb_frag_size(frag); | |
738 | while (len) { | |
739 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
740 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
741 | buf_size = len; | |
742 | dw2 |= len; | |
743 | } else { | |
744 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
745 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
746 | } | |
747 | tbi->map_type = VMXNET3_MAP_PAGE; | |
748 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
749 | buf_offset, buf_size, | |
750 | DMA_TO_DEVICE); | |
751 | ||
752 | tbi->len = buf_size; | |
753 | ||
754 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
755 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
756 | ||
757 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); | |
758 | gdesc->dword[2] = cpu_to_le32(dw2); | |
759 | gdesc->dword[3] = 0; | |
760 | ||
761 | netdev_dbg(adapter->netdev, | |
762 | "txd[%u]: 0x%llu %u %u\n", | |
763 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), | |
764 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
765 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
766 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
767 | ||
768 | len -= buf_size; | |
769 | buf_offset += buf_size; | |
770 | } | |
771 | } | |
772 | ||
773 | ctx->eop_txd = gdesc; | |
774 | ||
775 | /* set the last buf_info for the pkt */ | |
776 | tbi->skb = skb; | |
777 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
778 | } | |
779 | ||
780 | ||
781 | /* Init all tx queues */ | |
782 | static void | |
783 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
784 | { | |
785 | int i; | |
786 | ||
787 | for (i = 0; i < adapter->num_tx_queues; i++) | |
788 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
789 | } | |
790 | ||
791 | ||
792 | /* | |
793 | * parse and copy relevant protocol headers: | |
794 | * For a tso pkt, relevant headers are L2/3/4 including options | |
795 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
796 | * if it's a TCP/UDP pkt | |
797 | * | |
798 | * Returns: | |
799 | * -1: error happens during parsing | |
800 | * 0: protocol headers parsed, but too big to be copied | |
801 | * 1: protocol headers parsed and copied | |
802 | * | |
803 | * Other effects: | |
804 | * 1. related *ctx fields are updated. | |
805 | * 2. ctx->copy_size is # of bytes copied | |
806 | * 3. the portion copied is guaranteed to be in the linear part | |
807 | * | |
808 | */ | |
809 | static int | |
810 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
811 | struct vmxnet3_tx_ctx *ctx, | |
812 | struct vmxnet3_adapter *adapter) | |
813 | { | |
814 | struct Vmxnet3_TxDataDesc *tdd; | |
815 | ||
816 | if (ctx->mss) { /* TSO */ | |
817 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); | |
818 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
819 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; | |
820 | } else { | |
821 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
822 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); | |
823 | ||
824 | if (ctx->ipv4) { | |
825 | const struct iphdr *iph = ip_hdr(skb); | |
826 | ||
827 | if (iph->protocol == IPPROTO_TCP) | |
828 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
829 | else if (iph->protocol == IPPROTO_UDP) | |
830 | ctx->l4_hdr_size = sizeof(struct udphdr); | |
831 | else | |
832 | ctx->l4_hdr_size = 0; | |
833 | } else { | |
834 | /* for simplicity, don't copy L4 headers */ | |
835 | ctx->l4_hdr_size = 0; | |
836 | } | |
837 | ctx->copy_size = min(ctx->eth_ip_hdr_size + | |
838 | ctx->l4_hdr_size, skb->len); | |
839 | } else { | |
840 | ctx->eth_ip_hdr_size = 0; | |
841 | ctx->l4_hdr_size = 0; | |
842 | /* copy as much as allowed */ | |
843 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
844 | , skb_headlen(skb)); | |
845 | } | |
846 | ||
847 | /* make sure headers are accessible directly */ | |
848 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
849 | goto err; | |
850 | } | |
851 | ||
852 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
853 | tq->stats.oversized_hdr++; | |
854 | ctx->copy_size = 0; | |
855 | return 0; | |
856 | } | |
857 | ||
858 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
859 | ||
860 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
861 | netdev_dbg(adapter->netdev, | |
862 | "copy %u bytes to dataRing[%u]\n", | |
863 | ctx->copy_size, tq->tx_ring.next2fill); | |
864 | return 1; | |
865 | ||
866 | err: | |
867 | return -1; | |
868 | } | |
869 | ||
870 | ||
871 | static void | |
872 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
873 | struct vmxnet3_tx_ctx *ctx) | |
874 | { | |
875 | struct tcphdr *tcph = tcp_hdr(skb); | |
876 | ||
877 | if (ctx->ipv4) { | |
878 | struct iphdr *iph = ip_hdr(skb); | |
879 | ||
880 | iph->check = 0; | |
881 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
882 | IPPROTO_TCP, 0); | |
883 | } else { | |
884 | struct ipv6hdr *iph = ipv6_hdr(skb); | |
885 | ||
886 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, | |
887 | IPPROTO_TCP, 0); | |
888 | } | |
889 | } | |
890 | ||
891 | static int txd_estimate(const struct sk_buff *skb) | |
892 | { | |
893 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
894 | int i; | |
895 | ||
896 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
897 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
898 | ||
899 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
900 | } | |
901 | return count; | |
902 | } | |
903 | ||
904 | /* | |
905 | * Transmits a pkt thru a given tq | |
906 | * Returns: | |
907 | * NETDEV_TX_OK: descriptors are setup successfully | |
908 | * NETDEV_TX_OK: error occurred, the pkt is dropped | |
909 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped | |
910 | * | |
911 | * Side-effects: | |
912 | * 1. tx ring may be changed | |
913 | * 2. tq stats may be updated accordingly | |
914 | * 3. shared->txNumDeferred may be updated | |
915 | */ | |
916 | ||
917 | static int | |
918 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
919 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
920 | { | |
921 | int ret; | |
922 | u32 count; | |
923 | unsigned long flags; | |
924 | struct vmxnet3_tx_ctx ctx; | |
925 | union Vmxnet3_GenericDesc *gdesc; | |
926 | #ifdef __BIG_ENDIAN_BITFIELD | |
927 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
928 | union Vmxnet3_GenericDesc tempTxDesc; | |
929 | #endif | |
930 | ||
931 | count = txd_estimate(skb); | |
932 | ||
933 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); | |
934 | ||
935 | ctx.mss = skb_shinfo(skb)->gso_size; | |
936 | if (ctx.mss) { | |
937 | if (skb_header_cloned(skb)) { | |
938 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
939 | GFP_ATOMIC) != 0)) { | |
940 | tq->stats.drop_tso++; | |
941 | goto drop_pkt; | |
942 | } | |
943 | tq->stats.copy_skb_header++; | |
944 | } | |
945 | vmxnet3_prepare_tso(skb, &ctx); | |
946 | } else { | |
947 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
948 | ||
949 | /* non-tso pkts must not use more than | |
950 | * VMXNET3_MAX_TXD_PER_PKT entries | |
951 | */ | |
952 | if (skb_linearize(skb) != 0) { | |
953 | tq->stats.drop_too_many_frags++; | |
954 | goto drop_pkt; | |
955 | } | |
956 | tq->stats.linearized++; | |
957 | ||
958 | /* recalculate the # of descriptors to use */ | |
959 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
960 | } | |
961 | } | |
962 | ||
963 | spin_lock_irqsave(&tq->tx_lock, flags); | |
964 | ||
965 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
966 | tq->stats.tx_ring_full++; | |
967 | netdev_dbg(adapter->netdev, | |
968 | "tx queue stopped on %s, next2comp %u" | |
969 | " next2fill %u\n", adapter->netdev->name, | |
970 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
971 | ||
972 | vmxnet3_tq_stop(tq, adapter); | |
973 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
974 | return NETDEV_TX_BUSY; | |
975 | } | |
976 | ||
977 | ||
978 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); | |
979 | if (ret >= 0) { | |
980 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
981 | /* hdrs parsed, check against other limits */ | |
982 | if (ctx.mss) { | |
983 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
984 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
985 | goto hdr_too_big; | |
986 | } | |
987 | } else { | |
988 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
989 | if (unlikely(ctx.eth_ip_hdr_size + | |
990 | skb->csum_offset > | |
991 | VMXNET3_MAX_CSUM_OFFSET)) { | |
992 | goto hdr_too_big; | |
993 | } | |
994 | } | |
995 | } | |
996 | } else { | |
997 | tq->stats.drop_hdr_inspect_err++; | |
998 | goto unlock_drop_pkt; | |
999 | } | |
1000 | ||
1001 | /* fill tx descs related to addr & len */ | |
1002 | vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter); | |
1003 | ||
1004 | /* setup the EOP desc */ | |
1005 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); | |
1006 | ||
1007 | /* setup the SOP desc */ | |
1008 | #ifdef __BIG_ENDIAN_BITFIELD | |
1009 | gdesc = &tempTxDesc; | |
1010 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1011 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1012 | #else | |
1013 | gdesc = ctx.sop_txd; | |
1014 | #endif | |
1015 | if (ctx.mss) { | |
1016 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1017 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1018 | gdesc->txd.msscof = ctx.mss; | |
1019 | le32_add_cpu(&tq->shared->txNumDeferred, (skb->len - | |
1020 | gdesc->txd.hlen + ctx.mss - 1) / ctx.mss); | |
1021 | } else { | |
1022 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1023 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1024 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1025 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1026 | skb->csum_offset; | |
1027 | } else { | |
1028 | gdesc->txd.om = 0; | |
1029 | gdesc->txd.msscof = 0; | |
1030 | } | |
1031 | le32_add_cpu(&tq->shared->txNumDeferred, 1); | |
1032 | } | |
1033 | ||
1034 | if (vlan_tx_tag_present(skb)) { | |
1035 | gdesc->txd.ti = 1; | |
1036 | gdesc->txd.tci = vlan_tx_tag_get(skb); | |
1037 | } | |
1038 | ||
1039 | /* finally flips the GEN bit of the SOP desc. */ | |
1040 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1041 | VMXNET3_TXD_GEN); | |
1042 | #ifdef __BIG_ENDIAN_BITFIELD | |
1043 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1044 | * place. | |
1045 | */ | |
1046 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1047 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1048 | gdesc = ctx.sop_txd; | |
1049 | #endif | |
1050 | netdev_dbg(adapter->netdev, | |
1051 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", | |
1052 | (u32)(ctx.sop_txd - | |
1053 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), | |
1054 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
1055 | ||
1056 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1057 | ||
1058 | if (le32_to_cpu(tq->shared->txNumDeferred) >= | |
1059 | le32_to_cpu(tq->shared->txThreshold)) { | |
1060 | tq->shared->txNumDeferred = 0; | |
1061 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1062 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
1063 | tq->tx_ring.next2fill); | |
1064 | } | |
1065 | ||
1066 | return NETDEV_TX_OK; | |
1067 | ||
1068 | hdr_too_big: | |
1069 | tq->stats.drop_oversized_hdr++; | |
1070 | unlock_drop_pkt: | |
1071 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1072 | drop_pkt: | |
1073 | tq->stats.drop_total++; | |
1074 | dev_kfree_skb(skb); | |
1075 | return NETDEV_TX_OK; | |
1076 | } | |
1077 | ||
1078 | ||
1079 | static netdev_tx_t | |
1080 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1081 | { | |
1082 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1083 | ||
1084 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); | |
1085 | return vmxnet3_tq_xmit(skb, | |
1086 | &adapter->tx_queue[skb->queue_mapping], | |
1087 | adapter, netdev); | |
1088 | } | |
1089 | ||
1090 | ||
1091 | static void | |
1092 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1093 | struct sk_buff *skb, | |
1094 | union Vmxnet3_GenericDesc *gdesc) | |
1095 | { | |
1096 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { | |
1097 | /* typical case: TCP/UDP over IP and both csums are correct */ | |
1098 | if ((le32_to_cpu(gdesc->dword[3]) & VMXNET3_RCD_CSUM_OK) == | |
1099 | VMXNET3_RCD_CSUM_OK) { | |
1100 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1101 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1102 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
1103 | BUG_ON(gdesc->rcd.frg); | |
1104 | } else { | |
1105 | if (gdesc->rcd.csum) { | |
1106 | skb->csum = htons(gdesc->rcd.csum); | |
1107 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1108 | } else { | |
1109 | skb_checksum_none_assert(skb); | |
1110 | } | |
1111 | } | |
1112 | } else { | |
1113 | skb_checksum_none_assert(skb); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | ||
1118 | static void | |
1119 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1120 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1121 | { | |
1122 | rq->stats.drop_err++; | |
1123 | if (!rcd->fcs) | |
1124 | rq->stats.drop_fcs++; | |
1125 | ||
1126 | rq->stats.drop_total++; | |
1127 | ||
1128 | /* | |
1129 | * We do not unmap and chain the rx buffer to the skb. | |
1130 | * We basically pretend this buffer is not used and will be recycled | |
1131 | * by vmxnet3_rq_alloc_rx_buf() | |
1132 | */ | |
1133 | ||
1134 | /* | |
1135 | * ctx->skb may be NULL if this is the first and the only one | |
1136 | * desc for the pkt | |
1137 | */ | |
1138 | if (ctx->skb) | |
1139 | dev_kfree_skb_irq(ctx->skb); | |
1140 | ||
1141 | ctx->skb = NULL; | |
1142 | } | |
1143 | ||
1144 | ||
1145 | static int | |
1146 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1147 | struct vmxnet3_adapter *adapter, int quota) | |
1148 | { | |
1149 | static const u32 rxprod_reg[2] = { | |
1150 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1151 | }; | |
1152 | u32 num_rxd = 0; | |
1153 | bool skip_page_frags = false; | |
1154 | struct Vmxnet3_RxCompDesc *rcd; | |
1155 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
1156 | #ifdef __BIG_ENDIAN_BITFIELD | |
1157 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1158 | struct Vmxnet3_RxCompDesc rxComp; | |
1159 | #endif | |
1160 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1161 | &rxComp); | |
1162 | while (rcd->gen == rq->comp_ring.gen) { | |
1163 | struct vmxnet3_rx_buf_info *rbi; | |
1164 | struct sk_buff *skb, *new_skb = NULL; | |
1165 | struct page *new_page = NULL; | |
1166 | int num_to_alloc; | |
1167 | struct Vmxnet3_RxDesc *rxd; | |
1168 | u32 idx, ring_idx; | |
1169 | struct vmxnet3_cmd_ring *ring = NULL; | |
1170 | if (num_rxd >= quota) { | |
1171 | /* we may stop even before we see the EOP desc of | |
1172 | * the current pkt | |
1173 | */ | |
1174 | break; | |
1175 | } | |
1176 | num_rxd++; | |
1177 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2); | |
1178 | idx = rcd->rxdIdx; | |
1179 | ring_idx = rcd->rqID < adapter->num_rx_queues ? 0 : 1; | |
1180 | ring = rq->rx_ring + ring_idx; | |
1181 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, | |
1182 | &rxCmdDesc); | |
1183 | rbi = rq->buf_info[ring_idx] + idx; | |
1184 | ||
1185 | BUG_ON(rxd->addr != rbi->dma_addr || | |
1186 | rxd->len != rbi->len); | |
1187 | ||
1188 | if (unlikely(rcd->eop && rcd->err)) { | |
1189 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1190 | goto rcd_done; | |
1191 | } | |
1192 | ||
1193 | if (rcd->sop) { /* first buf of the pkt */ | |
1194 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
1195 | rcd->rqID != rq->qid); | |
1196 | ||
1197 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1198 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1199 | ||
1200 | if (unlikely(rcd->len == 0)) { | |
1201 | /* Pretend the rx buffer is skipped. */ | |
1202 | BUG_ON(!(rcd->sop && rcd->eop)); | |
1203 | netdev_dbg(adapter->netdev, | |
1204 | "rxRing[%u][%u] 0 length\n", | |
1205 | ring_idx, idx); | |
1206 | goto rcd_done; | |
1207 | } | |
1208 | ||
1209 | skip_page_frags = false; | |
1210 | ctx->skb = rbi->skb; | |
1211 | new_skb = netdev_alloc_skb_ip_align(adapter->netdev, | |
1212 | rbi->len); | |
1213 | if (new_skb == NULL) { | |
1214 | /* Skb allocation failed, do not handover this | |
1215 | * skb to stack. Reuse it. Drop the existing pkt | |
1216 | */ | |
1217 | rq->stats.rx_buf_alloc_failure++; | |
1218 | ctx->skb = NULL; | |
1219 | rq->stats.drop_total++; | |
1220 | skip_page_frags = true; | |
1221 | goto rcd_done; | |
1222 | } | |
1223 | ||
1224 | pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len, | |
1225 | PCI_DMA_FROMDEVICE); | |
1226 | ||
1227 | #ifdef VMXNET3_RSS | |
1228 | if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE && | |
1229 | (adapter->netdev->features & NETIF_F_RXHASH)) | |
1230 | ctx->skb->rxhash = le32_to_cpu(rcd->rssHash); | |
1231 | #endif | |
1232 | skb_put(ctx->skb, rcd->len); | |
1233 | ||
1234 | /* Immediate refill */ | |
1235 | rbi->skb = new_skb; | |
1236 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
1237 | rbi->skb->data, rbi->len, | |
1238 | PCI_DMA_FROMDEVICE); | |
1239 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1240 | rxd->len = rbi->len; | |
1241 | ||
1242 | } else { | |
1243 | BUG_ON(ctx->skb == NULL && !skip_page_frags); | |
1244 | ||
1245 | /* non SOP buffer must be type 1 in most cases */ | |
1246 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); | |
1247 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
1248 | ||
1249 | /* If an sop buffer was dropped, skip all | |
1250 | * following non-sop fragments. They will be reused. | |
1251 | */ | |
1252 | if (skip_page_frags) | |
1253 | goto rcd_done; | |
1254 | ||
1255 | new_page = alloc_page(GFP_ATOMIC); | |
1256 | if (unlikely(new_page == NULL)) { | |
1257 | /* Replacement page frag could not be allocated. | |
1258 | * Reuse this page. Drop the pkt and free the | |
1259 | * skb which contained this page as a frag. Skip | |
1260 | * processing all the following non-sop frags. | |
1261 | */ | |
1262 | rq->stats.rx_buf_alloc_failure++; | |
1263 | dev_kfree_skb(ctx->skb); | |
1264 | ctx->skb = NULL; | |
1265 | skip_page_frags = true; | |
1266 | goto rcd_done; | |
1267 | } | |
1268 | ||
1269 | if (rcd->len) { | |
1270 | pci_unmap_page(adapter->pdev, | |
1271 | rbi->dma_addr, rbi->len, | |
1272 | PCI_DMA_FROMDEVICE); | |
1273 | ||
1274 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
1275 | } | |
1276 | ||
1277 | /* Immediate refill */ | |
1278 | rbi->page = new_page; | |
1279 | rbi->dma_addr = pci_map_page(adapter->pdev, rbi->page, | |
1280 | 0, PAGE_SIZE, | |
1281 | PCI_DMA_FROMDEVICE); | |
1282 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1283 | rxd->len = rbi->len; | |
1284 | } | |
1285 | ||
1286 | ||
1287 | skb = ctx->skb; | |
1288 | if (rcd->eop) { | |
1289 | skb->len += skb->data_len; | |
1290 | ||
1291 | vmxnet3_rx_csum(adapter, skb, | |
1292 | (union Vmxnet3_GenericDesc *)rcd); | |
1293 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1294 | ||
1295 | if (unlikely(rcd->ts)) | |
1296 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci); | |
1297 | ||
1298 | if (adapter->netdev->features & NETIF_F_LRO) | |
1299 | netif_receive_skb(skb); | |
1300 | else | |
1301 | napi_gro_receive(&rq->napi, skb); | |
1302 | ||
1303 | ctx->skb = NULL; | |
1304 | } | |
1305 | ||
1306 | rcd_done: | |
1307 | /* device may have skipped some rx descs */ | |
1308 | ring->next2comp = idx; | |
1309 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1310 | ring = rq->rx_ring + ring_idx; | |
1311 | while (num_to_alloc) { | |
1312 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1313 | &rxCmdDesc); | |
1314 | BUG_ON(!rxd->addr); | |
1315 | ||
1316 | /* Recv desc is ready to be used by the device */ | |
1317 | rxd->gen = ring->gen; | |
1318 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1319 | num_to_alloc--; | |
1320 | } | |
1321 | ||
1322 | /* if needed, update the register */ | |
1323 | if (unlikely(rq->shared->updateRxProd)) { | |
1324 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1325 | rxprod_reg[ring_idx] + rq->qid * 8, | |
1326 | ring->next2fill); | |
1327 | } | |
1328 | ||
1329 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
1330 | vmxnet3_getRxComp(rcd, | |
1331 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); | |
1332 | } | |
1333 | ||
1334 | return num_rxd; | |
1335 | } | |
1336 | ||
1337 | ||
1338 | static void | |
1339 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1340 | struct vmxnet3_adapter *adapter) | |
1341 | { | |
1342 | u32 i, ring_idx; | |
1343 | struct Vmxnet3_RxDesc *rxd; | |
1344 | ||
1345 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1346 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
1347 | #ifdef __BIG_ENDIAN_BITFIELD | |
1348 | struct Vmxnet3_RxDesc rxDesc; | |
1349 | #endif | |
1350 | vmxnet3_getRxDesc(rxd, | |
1351 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
1352 | ||
1353 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1354 | rq->buf_info[ring_idx][i].skb) { | |
1355 | pci_unmap_single(adapter->pdev, rxd->addr, | |
1356 | rxd->len, PCI_DMA_FROMDEVICE); | |
1357 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1358 | rq->buf_info[ring_idx][i].skb = NULL; | |
1359 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1360 | rq->buf_info[ring_idx][i].page) { | |
1361 | pci_unmap_page(adapter->pdev, rxd->addr, | |
1362 | rxd->len, PCI_DMA_FROMDEVICE); | |
1363 | put_page(rq->buf_info[ring_idx][i].page); | |
1364 | rq->buf_info[ring_idx][i].page = NULL; | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1369 | rq->rx_ring[ring_idx].next2fill = | |
1370 | rq->rx_ring[ring_idx].next2comp = 0; | |
1371 | } | |
1372 | ||
1373 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1374 | rq->comp_ring.next2proc = 0; | |
1375 | } | |
1376 | ||
1377 | ||
1378 | static void | |
1379 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1380 | { | |
1381 | int i; | |
1382 | ||
1383 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1384 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1385 | } | |
1386 | ||
1387 | ||
1388 | static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, | |
1389 | struct vmxnet3_adapter *adapter) | |
1390 | { | |
1391 | int i; | |
1392 | int j; | |
1393 | ||
1394 | /* all rx buffers must have already been freed */ | |
1395 | for (i = 0; i < 2; i++) { | |
1396 | if (rq->buf_info[i]) { | |
1397 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1398 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | ||
1403 | kfree(rq->buf_info[0]); | |
1404 | ||
1405 | for (i = 0; i < 2; i++) { | |
1406 | if (rq->rx_ring[i].base) { | |
1407 | pci_free_consistent(adapter->pdev, rq->rx_ring[i].size | |
1408 | * sizeof(struct Vmxnet3_RxDesc), | |
1409 | rq->rx_ring[i].base, | |
1410 | rq->rx_ring[i].basePA); | |
1411 | rq->rx_ring[i].base = NULL; | |
1412 | } | |
1413 | rq->buf_info[i] = NULL; | |
1414 | } | |
1415 | ||
1416 | if (rq->comp_ring.base) { | |
1417 | pci_free_consistent(adapter->pdev, rq->comp_ring.size * | |
1418 | sizeof(struct Vmxnet3_RxCompDesc), | |
1419 | rq->comp_ring.base, rq->comp_ring.basePA); | |
1420 | rq->comp_ring.base = NULL; | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | ||
1425 | static int | |
1426 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1427 | struct vmxnet3_adapter *adapter) | |
1428 | { | |
1429 | int i; | |
1430 | ||
1431 | /* initialize buf_info */ | |
1432 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1433 | ||
1434 | /* 1st buf for a pkt is skbuff */ | |
1435 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1436 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1437 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1438 | } else { /* subsequent bufs for a pkt is frag */ | |
1439 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1440 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1441 | } | |
1442 | } | |
1443 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1444 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1445 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1446 | } | |
1447 | ||
1448 | /* reset internal state and allocate buffers for both rings */ | |
1449 | for (i = 0; i < 2; i++) { | |
1450 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
1451 | ||
1452 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1453 | sizeof(struct Vmxnet3_RxDesc)); | |
1454 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1455 | } | |
1456 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1457 | adapter) == 0) { | |
1458 | /* at least has 1 rx buffer for the 1st ring */ | |
1459 | return -ENOMEM; | |
1460 | } | |
1461 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1462 | ||
1463 | /* reset the comp ring */ | |
1464 | rq->comp_ring.next2proc = 0; | |
1465 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1466 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1467 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1468 | ||
1469 | /* reset rxctx */ | |
1470 | rq->rx_ctx.skb = NULL; | |
1471 | ||
1472 | /* stats are not reset */ | |
1473 | return 0; | |
1474 | } | |
1475 | ||
1476 | ||
1477 | static int | |
1478 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1479 | { | |
1480 | int i, err = 0; | |
1481 | ||
1482 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1483 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1484 | if (unlikely(err)) { | |
1485 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1486 | "initialize rx queue%i\n", | |
1487 | adapter->netdev->name, i); | |
1488 | break; | |
1489 | } | |
1490 | } | |
1491 | return err; | |
1492 | ||
1493 | } | |
1494 | ||
1495 | ||
1496 | static int | |
1497 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1498 | { | |
1499 | int i; | |
1500 | size_t sz; | |
1501 | struct vmxnet3_rx_buf_info *bi; | |
1502 | ||
1503 | for (i = 0; i < 2; i++) { | |
1504 | ||
1505 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
1506 | rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz, | |
1507 | &rq->rx_ring[i].basePA); | |
1508 | if (!rq->rx_ring[i].base) { | |
1509 | netdev_err(adapter->netdev, | |
1510 | "failed to allocate rx ring %d\n", i); | |
1511 | goto err; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
1516 | rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz, | |
1517 | &rq->comp_ring.basePA); | |
1518 | if (!rq->comp_ring.base) { | |
1519 | netdev_err(adapter->netdev, "failed to allocate rx comp ring\n"); | |
1520 | goto err; | |
1521 | } | |
1522 | ||
1523 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1524 | rq->rx_ring[1].size); | |
1525 | bi = kzalloc(sz, GFP_KERNEL); | |
1526 | if (!bi) | |
1527 | goto err; | |
1528 | ||
1529 | rq->buf_info[0] = bi; | |
1530 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1531 | ||
1532 | return 0; | |
1533 | ||
1534 | err: | |
1535 | vmxnet3_rq_destroy(rq, adapter); | |
1536 | return -ENOMEM; | |
1537 | } | |
1538 | ||
1539 | ||
1540 | static int | |
1541 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1542 | { | |
1543 | int i, err = 0; | |
1544 | ||
1545 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1546 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1547 | if (unlikely(err)) { | |
1548 | dev_err(&adapter->netdev->dev, | |
1549 | "%s: failed to create rx queue%i\n", | |
1550 | adapter->netdev->name, i); | |
1551 | goto err_out; | |
1552 | } | |
1553 | } | |
1554 | return err; | |
1555 | err_out: | |
1556 | vmxnet3_rq_destroy_all(adapter); | |
1557 | return err; | |
1558 | ||
1559 | } | |
1560 | ||
1561 | /* Multiple queue aware polling function for tx and rx */ | |
1562 | ||
1563 | static int | |
1564 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1565 | { | |
1566 | int rcd_done = 0, i; | |
1567 | if (unlikely(adapter->shared->ecr)) | |
1568 | vmxnet3_process_events(adapter); | |
1569 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1570 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
1571 | ||
1572 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1573 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1574 | adapter, budget); | |
1575 | return rcd_done; | |
1576 | } | |
1577 | ||
1578 | ||
1579 | static int | |
1580 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1581 | { | |
1582 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, | |
1583 | struct vmxnet3_rx_queue, napi); | |
1584 | int rxd_done; | |
1585 | ||
1586 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1587 | ||
1588 | if (rxd_done < budget) { | |
1589 | napi_complete(napi); | |
1590 | vmxnet3_enable_all_intrs(rx_queue->adapter); | |
1591 | } | |
1592 | return rxd_done; | |
1593 | } | |
1594 | ||
1595 | /* | |
1596 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1597 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1598 | */ | |
1599 | ||
1600 | static int | |
1601 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1602 | { | |
1603 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1604 | struct vmxnet3_rx_queue, napi); | |
1605 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1606 | int rxd_done; | |
1607 | ||
1608 | /* When sharing interrupt with corresponding tx queue, process | |
1609 | * tx completions in that queue as well | |
1610 | */ | |
1611 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1612 | struct vmxnet3_tx_queue *tq = | |
1613 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1614 | vmxnet3_tq_tx_complete(tq, adapter); | |
1615 | } | |
1616 | ||
1617 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
1618 | ||
1619 | if (rxd_done < budget) { | |
1620 | napi_complete(napi); | |
1621 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); | |
1622 | } | |
1623 | return rxd_done; | |
1624 | } | |
1625 | ||
1626 | ||
1627 | #ifdef CONFIG_PCI_MSI | |
1628 | ||
1629 | /* | |
1630 | * Handle completion interrupts on tx queues | |
1631 | * Returns whether or not the intr is handled | |
1632 | */ | |
1633 | ||
1634 | static irqreturn_t | |
1635 | vmxnet3_msix_tx(int irq, void *data) | |
1636 | { | |
1637 | struct vmxnet3_tx_queue *tq = data; | |
1638 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1639 | ||
1640 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1641 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1642 | ||
1643 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1644 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1645 | int i; | |
1646 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1647 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1648 | vmxnet3_tq_tx_complete(txq, adapter); | |
1649 | } | |
1650 | } else { | |
1651 | vmxnet3_tq_tx_complete(tq, adapter); | |
1652 | } | |
1653 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1654 | ||
1655 | return IRQ_HANDLED; | |
1656 | } | |
1657 | ||
1658 | ||
1659 | /* | |
1660 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1661 | * intr is handled | |
1662 | */ | |
1663 | ||
1664 | static irqreturn_t | |
1665 | vmxnet3_msix_rx(int irq, void *data) | |
1666 | { | |
1667 | struct vmxnet3_rx_queue *rq = data; | |
1668 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1669 | ||
1670 | /* disable intr if needed */ | |
1671 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1672 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1673 | napi_schedule(&rq->napi); | |
1674 | ||
1675 | return IRQ_HANDLED; | |
1676 | } | |
1677 | ||
1678 | /* | |
1679 | *---------------------------------------------------------------------------- | |
1680 | * | |
1681 | * vmxnet3_msix_event -- | |
1682 | * | |
1683 | * vmxnet3 msix event intr handler | |
1684 | * | |
1685 | * Result: | |
1686 | * whether or not the intr is handled | |
1687 | * | |
1688 | *---------------------------------------------------------------------------- | |
1689 | */ | |
1690 | ||
1691 | static irqreturn_t | |
1692 | vmxnet3_msix_event(int irq, void *data) | |
1693 | { | |
1694 | struct net_device *dev = data; | |
1695 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1696 | ||
1697 | /* disable intr if needed */ | |
1698 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1699 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
1700 | ||
1701 | if (adapter->shared->ecr) | |
1702 | vmxnet3_process_events(adapter); | |
1703 | ||
1704 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
1705 | ||
1706 | return IRQ_HANDLED; | |
1707 | } | |
1708 | ||
1709 | #endif /* CONFIG_PCI_MSI */ | |
1710 | ||
1711 | ||
1712 | /* Interrupt handler for vmxnet3 */ | |
1713 | static irqreturn_t | |
1714 | vmxnet3_intr(int irq, void *dev_id) | |
1715 | { | |
1716 | struct net_device *dev = dev_id; | |
1717 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1718 | ||
1719 | if (adapter->intr.type == VMXNET3_IT_INTX) { | |
1720 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); | |
1721 | if (unlikely(icr == 0)) | |
1722 | /* not ours */ | |
1723 | return IRQ_NONE; | |
1724 | } | |
1725 | ||
1726 | ||
1727 | /* disable intr if needed */ | |
1728 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1729 | vmxnet3_disable_all_intrs(adapter); | |
1730 | ||
1731 | napi_schedule(&adapter->rx_queue[0].napi); | |
1732 | ||
1733 | return IRQ_HANDLED; | |
1734 | } | |
1735 | ||
1736 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1737 | ||
1738 | /* netpoll callback. */ | |
1739 | static void | |
1740 | vmxnet3_netpoll(struct net_device *netdev) | |
1741 | { | |
1742 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1743 | ||
1744 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1745 | vmxnet3_disable_all_intrs(adapter); | |
1746 | ||
1747 | vmxnet3_do_poll(adapter, adapter->rx_queue[0].rx_ring[0].size); | |
1748 | vmxnet3_enable_all_intrs(adapter); | |
1749 | ||
1750 | } | |
1751 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1752 | ||
1753 | static int | |
1754 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1755 | { | |
1756 | struct vmxnet3_intr *intr = &adapter->intr; | |
1757 | int err = 0, i; | |
1758 | int vector = 0; | |
1759 | ||
1760 | #ifdef CONFIG_PCI_MSI | |
1761 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
1762 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1763 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1764 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
1765 | adapter->netdev->name, vector); | |
1766 | err = request_irq( | |
1767 | intr->msix_entries[vector].vector, | |
1768 | vmxnet3_msix_tx, 0, | |
1769 | adapter->tx_queue[i].name, | |
1770 | &adapter->tx_queue[i]); | |
1771 | } else { | |
1772 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
1773 | adapter->netdev->name, vector); | |
1774 | } | |
1775 | if (err) { | |
1776 | dev_err(&adapter->netdev->dev, | |
1777 | "Failed to request irq for MSIX, %s, " | |
1778 | "error %d\n", | |
1779 | adapter->tx_queue[i].name, err); | |
1780 | return err; | |
1781 | } | |
1782 | ||
1783 | /* Handle the case where only 1 MSIx was allocated for | |
1784 | * all tx queues */ | |
1785 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1786 | for (; i < adapter->num_tx_queues; i++) | |
1787 | adapter->tx_queue[i].comp_ring.intr_idx | |
1788 | = vector; | |
1789 | vector++; | |
1790 | break; | |
1791 | } else { | |
1792 | adapter->tx_queue[i].comp_ring.intr_idx | |
1793 | = vector++; | |
1794 | } | |
1795 | } | |
1796 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
1797 | vector = 0; | |
1798 | ||
1799 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1800 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
1801 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
1802 | adapter->netdev->name, vector); | |
1803 | else | |
1804 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
1805 | adapter->netdev->name, vector); | |
1806 | err = request_irq(intr->msix_entries[vector].vector, | |
1807 | vmxnet3_msix_rx, 0, | |
1808 | adapter->rx_queue[i].name, | |
1809 | &(adapter->rx_queue[i])); | |
1810 | if (err) { | |
1811 | netdev_err(adapter->netdev, | |
1812 | "Failed to request irq for MSIX, " | |
1813 | "%s, error %d\n", | |
1814 | adapter->rx_queue[i].name, err); | |
1815 | return err; | |
1816 | } | |
1817 | ||
1818 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
1819 | } | |
1820 | ||
1821 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
1822 | adapter->netdev->name, vector); | |
1823 | err = request_irq(intr->msix_entries[vector].vector, | |
1824 | vmxnet3_msix_event, 0, | |
1825 | intr->event_msi_vector_name, adapter->netdev); | |
1826 | intr->event_intr_idx = vector; | |
1827 | ||
1828 | } else if (intr->type == VMXNET3_IT_MSI) { | |
1829 | adapter->num_rx_queues = 1; | |
1830 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, | |
1831 | adapter->netdev->name, adapter->netdev); | |
1832 | } else { | |
1833 | #endif | |
1834 | adapter->num_rx_queues = 1; | |
1835 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, | |
1836 | IRQF_SHARED, adapter->netdev->name, | |
1837 | adapter->netdev); | |
1838 | #ifdef CONFIG_PCI_MSI | |
1839 | } | |
1840 | #endif | |
1841 | intr->num_intrs = vector + 1; | |
1842 | if (err) { | |
1843 | netdev_err(adapter->netdev, | |
1844 | "Failed to request irq (intr type:%d), error %d\n", | |
1845 | intr->type, err); | |
1846 | } else { | |
1847 | /* Number of rx queues will not change after this */ | |
1848 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1849 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1850 | rq->qid = i; | |
1851 | rq->qid2 = i + adapter->num_rx_queues; | |
1852 | } | |
1853 | ||
1854 | ||
1855 | ||
1856 | /* init our intr settings */ | |
1857 | for (i = 0; i < intr->num_intrs; i++) | |
1858 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
1859 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
1860 | adapter->intr.event_intr_idx = 0; | |
1861 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1862 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
1863 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
1864 | } | |
1865 | ||
1866 | netdev_info(adapter->netdev, | |
1867 | "intr type %u, mode %u, %u vectors allocated\n", | |
1868 | intr->type, intr->mask_mode, intr->num_intrs); | |
1869 | } | |
1870 | ||
1871 | return err; | |
1872 | } | |
1873 | ||
1874 | ||
1875 | static void | |
1876 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
1877 | { | |
1878 | struct vmxnet3_intr *intr = &adapter->intr; | |
1879 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
1880 | ||
1881 | switch (intr->type) { | |
1882 | #ifdef CONFIG_PCI_MSI | |
1883 | case VMXNET3_IT_MSIX: | |
1884 | { | |
1885 | int i, vector = 0; | |
1886 | ||
1887 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1888 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1889 | free_irq(intr->msix_entries[vector++].vector, | |
1890 | &(adapter->tx_queue[i])); | |
1891 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
1892 | break; | |
1893 | } | |
1894 | } | |
1895 | ||
1896 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1897 | free_irq(intr->msix_entries[vector++].vector, | |
1898 | &(adapter->rx_queue[i])); | |
1899 | } | |
1900 | ||
1901 | free_irq(intr->msix_entries[vector].vector, | |
1902 | adapter->netdev); | |
1903 | BUG_ON(vector >= intr->num_intrs); | |
1904 | break; | |
1905 | } | |
1906 | #endif | |
1907 | case VMXNET3_IT_MSI: | |
1908 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1909 | break; | |
1910 | case VMXNET3_IT_INTX: | |
1911 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1912 | break; | |
1913 | default: | |
1914 | BUG(); | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | ||
1919 | static void | |
1920 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
1921 | { | |
1922 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1923 | u16 vid; | |
1924 | ||
1925 | /* allow untagged pkts */ | |
1926 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1927 | ||
1928 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
1929 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1930 | } | |
1931 | ||
1932 | ||
1933 | static int | |
1934 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) | |
1935 | { | |
1936 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1937 | ||
1938 | if (!(netdev->flags & IFF_PROMISC)) { | |
1939 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1940 | unsigned long flags; | |
1941 | ||
1942 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1943 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1944 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1945 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1946 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1947 | } | |
1948 | ||
1949 | set_bit(vid, adapter->active_vlans); | |
1950 | ||
1951 | return 0; | |
1952 | } | |
1953 | ||
1954 | ||
1955 | static int | |
1956 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) | |
1957 | { | |
1958 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1959 | ||
1960 | if (!(netdev->flags & IFF_PROMISC)) { | |
1961 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1962 | unsigned long flags; | |
1963 | ||
1964 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
1965 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1966 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1967 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1968 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1969 | } | |
1970 | ||
1971 | clear_bit(vid, adapter->active_vlans); | |
1972 | ||
1973 | return 0; | |
1974 | } | |
1975 | ||
1976 | ||
1977 | static u8 * | |
1978 | vmxnet3_copy_mc(struct net_device *netdev) | |
1979 | { | |
1980 | u8 *buf = NULL; | |
1981 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; | |
1982 | ||
1983 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
1984 | if (sz <= 0xffff) { | |
1985 | /* We may be called with BH disabled */ | |
1986 | buf = kmalloc(sz, GFP_ATOMIC); | |
1987 | if (buf) { | |
1988 | struct netdev_hw_addr *ha; | |
1989 | int i = 0; | |
1990 | ||
1991 | netdev_for_each_mc_addr(ha, netdev) | |
1992 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
1993 | ETH_ALEN); | |
1994 | } | |
1995 | } | |
1996 | return buf; | |
1997 | } | |
1998 | ||
1999 | ||
2000 | static void | |
2001 | vmxnet3_set_mc(struct net_device *netdev) | |
2002 | { | |
2003 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2004 | unsigned long flags; | |
2005 | struct Vmxnet3_RxFilterConf *rxConf = | |
2006 | &adapter->shared->devRead.rxFilterConf; | |
2007 | u8 *new_table = NULL; | |
2008 | u32 new_mode = VMXNET3_RXM_UCAST; | |
2009 | ||
2010 | if (netdev->flags & IFF_PROMISC) { | |
2011 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2012 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2013 | ||
2014 | new_mode |= VMXNET3_RXM_PROMISC; | |
2015 | } else { | |
2016 | vmxnet3_restore_vlan(adapter); | |
2017 | } | |
2018 | ||
2019 | if (netdev->flags & IFF_BROADCAST) | |
2020 | new_mode |= VMXNET3_RXM_BCAST; | |
2021 | ||
2022 | if (netdev->flags & IFF_ALLMULTI) | |
2023 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2024 | else | |
2025 | if (!netdev_mc_empty(netdev)) { | |
2026 | new_table = vmxnet3_copy_mc(netdev); | |
2027 | if (new_table) { | |
2028 | new_mode |= VMXNET3_RXM_MCAST; | |
2029 | rxConf->mfTableLen = cpu_to_le16( | |
2030 | netdev_mc_count(netdev) * ETH_ALEN); | |
2031 | rxConf->mfTablePA = cpu_to_le64(virt_to_phys( | |
2032 | new_table)); | |
2033 | } else { | |
2034 | netdev_info(netdev, "failed to copy mcast list" | |
2035 | ", setting ALL_MULTI\n"); | |
2036 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | ||
2041 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
2042 | rxConf->mfTableLen = 0; | |
2043 | rxConf->mfTablePA = 0; | |
2044 | } | |
2045 | ||
2046 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2047 | if (new_mode != rxConf->rxMode) { | |
2048 | rxConf->rxMode = cpu_to_le32(new_mode); | |
2049 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2050 | VMXNET3_CMD_UPDATE_RX_MODE); | |
2051 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2052 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2053 | } | |
2054 | ||
2055 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2056 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
2057 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2058 | ||
2059 | kfree(new_table); | |
2060 | } | |
2061 | ||
2062 | void | |
2063 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2064 | { | |
2065 | int i; | |
2066 | ||
2067 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2068 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2069 | } | |
2070 | ||
2071 | ||
2072 | /* | |
2073 | * Set up driver_shared based on settings in adapter. | |
2074 | */ | |
2075 | ||
2076 | static void | |
2077 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2078 | { | |
2079 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2080 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2081 | struct Vmxnet3_TxQueueConf *tqc; | |
2082 | struct Vmxnet3_RxQueueConf *rqc; | |
2083 | int i; | |
2084 | ||
2085 | memset(shared, 0, sizeof(*shared)); | |
2086 | ||
2087 | /* driver settings */ | |
2088 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); | |
2089 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2090 | VMXNET3_DRIVER_VERSION_NUM); | |
2091 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? | |
2092 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2093 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
2094 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( | |
2095 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2096 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2097 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
2098 | ||
2099 | devRead->misc.ddPA = cpu_to_le64(virt_to_phys(adapter)); | |
2100 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); | |
2101 | ||
2102 | /* set up feature flags */ | |
2103 | if (adapter->netdev->features & NETIF_F_RXCSUM) | |
2104 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; | |
2105 | ||
2106 | if (adapter->netdev->features & NETIF_F_LRO) { | |
2107 | devRead->misc.uptFeatures |= UPT1_F_LRO; | |
2108 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); | |
2109 | } | |
2110 | if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
2111 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; | |
2112 | ||
2113 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); | |
2114 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2115 | devRead->misc.queueDescLen = cpu_to_le32( | |
2116 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + | |
2117 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
2118 | ||
2119 | /* tx queue settings */ | |
2120 | devRead->misc.numTxQueues = adapter->num_tx_queues; | |
2121 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2122 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2123 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2124 | tqc = &adapter->tqd_start[i].conf; | |
2125 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2126 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2127 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
2128 | tqc->ddPA = cpu_to_le64(virt_to_phys(tq->buf_info)); | |
2129 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); | |
2130 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
2131 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); | |
2132 | tqc->ddLen = cpu_to_le32( | |
2133 | sizeof(struct vmxnet3_tx_buf_info) * | |
2134 | tqc->txRingSize); | |
2135 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2136 | } | |
2137 | ||
2138 | /* rx queue settings */ | |
2139 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2140 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2141 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2142 | rqc = &adapter->rqd_start[i].conf; | |
2143 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2144 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2145 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
2146 | rqc->ddPA = cpu_to_le64(virt_to_phys( | |
2147 | rq->buf_info)); | |
2148 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); | |
2149 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2150 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2151 | rqc->ddLen = cpu_to_le32( | |
2152 | sizeof(struct vmxnet3_rx_buf_info) * | |
2153 | (rqc->rxRingSize[0] + | |
2154 | rqc->rxRingSize[1])); | |
2155 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
2156 | } | |
2157 | ||
2158 | #ifdef VMXNET3_RSS | |
2159 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2160 | ||
2161 | if (adapter->rss) { | |
2162 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
2163 | static const uint8_t rss_key[UPT1_RSS_MAX_KEY_SIZE] = { | |
2164 | 0x3b, 0x56, 0xd1, 0x56, 0x13, 0x4a, 0xe7, 0xac, | |
2165 | 0xe8, 0x79, 0x09, 0x75, 0xe8, 0x65, 0x79, 0x28, | |
2166 | 0x35, 0x12, 0xb9, 0x56, 0x7c, 0x76, 0x4b, 0x70, | |
2167 | 0xd8, 0x56, 0xa3, 0x18, 0x9b, 0x0a, 0xee, 0xf3, | |
2168 | 0x96, 0xa6, 0x9f, 0x8f, 0x9e, 0x8c, 0x90, 0xc9, | |
2169 | }; | |
2170 | ||
2171 | devRead->misc.uptFeatures |= UPT1_F_RSS; | |
2172 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2173 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2174 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2175 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2176 | UPT1_RSS_HASH_TYPE_IPV6; | |
2177 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2178 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2179 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
2180 | memcpy(rssConf->hashKey, rss_key, sizeof(rss_key)); | |
2181 | ||
2182 | for (i = 0; i < rssConf->indTableSize; i++) | |
2183 | rssConf->indTable[i] = ethtool_rxfh_indir_default( | |
2184 | i, adapter->num_rx_queues); | |
2185 | ||
2186 | devRead->rssConfDesc.confVer = 1; | |
2187 | devRead->rssConfDesc.confLen = sizeof(*rssConf); | |
2188 | devRead->rssConfDesc.confPA = virt_to_phys(rssConf); | |
2189 | } | |
2190 | ||
2191 | #endif /* VMXNET3_RSS */ | |
2192 | ||
2193 | /* intr settings */ | |
2194 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2195 | VMXNET3_IMM_AUTO; | |
2196 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2197 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2198 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2199 | ||
2200 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
2201 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
2202 | ||
2203 | /* rx filter settings */ | |
2204 | devRead->rxFilterConf.rxMode = 0; | |
2205 | vmxnet3_restore_vlan(adapter); | |
2206 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); | |
2207 | ||
2208 | /* the rest are already zeroed */ | |
2209 | } | |
2210 | ||
2211 | ||
2212 | int | |
2213 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2214 | { | |
2215 | int err, i; | |
2216 | u32 ret; | |
2217 | unsigned long flags; | |
2218 | ||
2219 | netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," | |
2220 | " ring sizes %u %u %u\n", adapter->netdev->name, | |
2221 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2222 | adapter->tx_queue[0].tx_ring.size, | |
2223 | adapter->rx_queue[0].rx_ring[0].size, | |
2224 | adapter->rx_queue[0].rx_ring[1].size); | |
2225 | ||
2226 | vmxnet3_tq_init_all(adapter); | |
2227 | err = vmxnet3_rq_init_all(adapter); | |
2228 | if (err) { | |
2229 | netdev_err(adapter->netdev, | |
2230 | "Failed to init rx queue error %d\n", err); | |
2231 | goto rq_err; | |
2232 | } | |
2233 | ||
2234 | err = vmxnet3_request_irqs(adapter); | |
2235 | if (err) { | |
2236 | netdev_err(adapter->netdev, | |
2237 | "Failed to setup irq for error %d\n", err); | |
2238 | goto irq_err; | |
2239 | } | |
2240 | ||
2241 | vmxnet3_setup_driver_shared(adapter); | |
2242 | ||
2243 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( | |
2244 | adapter->shared_pa)); | |
2245 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2246 | adapter->shared_pa)); | |
2247 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2248 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2249 | VMXNET3_CMD_ACTIVATE_DEV); | |
2250 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2251 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2252 | ||
2253 | if (ret != 0) { | |
2254 | netdev_err(adapter->netdev, | |
2255 | "Failed to activate dev: error %u\n", ret); | |
2256 | err = -EINVAL; | |
2257 | goto activate_err; | |
2258 | } | |
2259 | ||
2260 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2261 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2262 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2263 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2264 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2265 | (i * VMXNET3_REG_ALIGN)), | |
2266 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2267 | } | |
2268 | ||
2269 | /* Apply the rx filter settins last. */ | |
2270 | vmxnet3_set_mc(adapter->netdev); | |
2271 | ||
2272 | /* | |
2273 | * Check link state when first activating device. It will start the | |
2274 | * tx queue if the link is up. | |
2275 | */ | |
2276 | vmxnet3_check_link(adapter, true); | |
2277 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2278 | napi_enable(&adapter->rx_queue[i].napi); | |
2279 | vmxnet3_enable_all_intrs(adapter); | |
2280 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2281 | return 0; | |
2282 | ||
2283 | activate_err: | |
2284 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2285 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2286 | vmxnet3_free_irqs(adapter); | |
2287 | irq_err: | |
2288 | rq_err: | |
2289 | /* free up buffers we allocated */ | |
2290 | vmxnet3_rq_cleanup_all(adapter); | |
2291 | return err; | |
2292 | } | |
2293 | ||
2294 | ||
2295 | void | |
2296 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2297 | { | |
2298 | unsigned long flags; | |
2299 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2300 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); | |
2301 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2302 | } | |
2303 | ||
2304 | ||
2305 | int | |
2306 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2307 | { | |
2308 | int i; | |
2309 | unsigned long flags; | |
2310 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) | |
2311 | return 0; | |
2312 | ||
2313 | ||
2314 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2315 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2316 | VMXNET3_CMD_QUIESCE_DEV); | |
2317 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2318 | vmxnet3_disable_all_intrs(adapter); | |
2319 | ||
2320 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2321 | napi_disable(&adapter->rx_queue[i].napi); | |
2322 | netif_tx_disable(adapter->netdev); | |
2323 | adapter->link_speed = 0; | |
2324 | netif_carrier_off(adapter->netdev); | |
2325 | ||
2326 | vmxnet3_tq_cleanup_all(adapter); | |
2327 | vmxnet3_rq_cleanup_all(adapter); | |
2328 | vmxnet3_free_irqs(adapter); | |
2329 | return 0; | |
2330 | } | |
2331 | ||
2332 | ||
2333 | static void | |
2334 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2335 | { | |
2336 | u32 tmp; | |
2337 | ||
2338 | tmp = *(u32 *)mac; | |
2339 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2340 | ||
2341 | tmp = (mac[5] << 8) | mac[4]; | |
2342 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2343 | } | |
2344 | ||
2345 | ||
2346 | static int | |
2347 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2348 | { | |
2349 | struct sockaddr *addr = p; | |
2350 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2351 | ||
2352 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2353 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2354 | ||
2355 | return 0; | |
2356 | } | |
2357 | ||
2358 | ||
2359 | /* ==================== initialization and cleanup routines ============ */ | |
2360 | ||
2361 | static int | |
2362 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
2363 | { | |
2364 | int err; | |
2365 | unsigned long mmio_start, mmio_len; | |
2366 | struct pci_dev *pdev = adapter->pdev; | |
2367 | ||
2368 | err = pci_enable_device(pdev); | |
2369 | if (err) { | |
2370 | dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err); | |
2371 | return err; | |
2372 | } | |
2373 | ||
2374 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
2375 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
2376 | dev_err(&pdev->dev, | |
2377 | "pci_set_consistent_dma_mask failed\n"); | |
2378 | err = -EIO; | |
2379 | goto err_set_mask; | |
2380 | } | |
2381 | *dma64 = true; | |
2382 | } else { | |
2383 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
2384 | dev_err(&pdev->dev, | |
2385 | "pci_set_dma_mask failed\n"); | |
2386 | err = -EIO; | |
2387 | goto err_set_mask; | |
2388 | } | |
2389 | *dma64 = false; | |
2390 | } | |
2391 | ||
2392 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
2393 | vmxnet3_driver_name); | |
2394 | if (err) { | |
2395 | dev_err(&pdev->dev, | |
2396 | "Failed to request region for adapter: error %d\n", err); | |
2397 | goto err_set_mask; | |
2398 | } | |
2399 | ||
2400 | pci_set_master(pdev); | |
2401 | ||
2402 | mmio_start = pci_resource_start(pdev, 0); | |
2403 | mmio_len = pci_resource_len(pdev, 0); | |
2404 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2405 | if (!adapter->hw_addr0) { | |
2406 | dev_err(&pdev->dev, "Failed to map bar0\n"); | |
2407 | err = -EIO; | |
2408 | goto err_ioremap; | |
2409 | } | |
2410 | ||
2411 | mmio_start = pci_resource_start(pdev, 1); | |
2412 | mmio_len = pci_resource_len(pdev, 1); | |
2413 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2414 | if (!adapter->hw_addr1) { | |
2415 | dev_err(&pdev->dev, "Failed to map bar1\n"); | |
2416 | err = -EIO; | |
2417 | goto err_bar1; | |
2418 | } | |
2419 | return 0; | |
2420 | ||
2421 | err_bar1: | |
2422 | iounmap(adapter->hw_addr0); | |
2423 | err_ioremap: | |
2424 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
2425 | err_set_mask: | |
2426 | pci_disable_device(pdev); | |
2427 | return err; | |
2428 | } | |
2429 | ||
2430 | ||
2431 | static void | |
2432 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2433 | { | |
2434 | BUG_ON(!adapter->pdev); | |
2435 | ||
2436 | iounmap(adapter->hw_addr0); | |
2437 | iounmap(adapter->hw_addr1); | |
2438 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2439 | pci_disable_device(adapter->pdev); | |
2440 | } | |
2441 | ||
2442 | ||
2443 | static void | |
2444 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2445 | { | |
2446 | size_t sz, i, ring0_size, ring1_size, comp_size; | |
2447 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[0]; | |
2448 | ||
2449 | ||
2450 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
2451 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2452 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2453 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2454 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2455 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2456 | ||
2457 | adapter->rx_buf_per_pkt = 1; | |
2458 | } else { | |
2459 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2460 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2461 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2462 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2463 | } | |
2464 | ||
2465 | /* | |
2466 | * for simplicity, force the ring0 size to be a multiple of | |
2467 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2468 | */ | |
2469 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
2470 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; | |
2471 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
2472 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / | |
2473 | sz * sz); | |
2474 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
2475 | comp_size = ring0_size + ring1_size; | |
2476 | ||
2477 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2478 | rq = &adapter->rx_queue[i]; | |
2479 | rq->rx_ring[0].size = ring0_size; | |
2480 | rq->rx_ring[1].size = ring1_size; | |
2481 | rq->comp_ring.size = comp_size; | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | ||
2486 | int | |
2487 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
2488 | u32 rx_ring_size, u32 rx_ring2_size) | |
2489 | { | |
2490 | int err = 0, i; | |
2491 | ||
2492 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2493 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2494 | tq->tx_ring.size = tx_ring_size; | |
2495 | tq->data_ring.size = tx_ring_size; | |
2496 | tq->comp_ring.size = tx_ring_size; | |
2497 | tq->shared = &adapter->tqd_start[i].ctrl; | |
2498 | tq->stopped = true; | |
2499 | tq->adapter = adapter; | |
2500 | tq->qid = i; | |
2501 | err = vmxnet3_tq_create(tq, adapter); | |
2502 | /* | |
2503 | * Too late to change num_tx_queues. We cannot do away with | |
2504 | * lesser number of queues than what we asked for | |
2505 | */ | |
2506 | if (err) | |
2507 | goto queue_err; | |
2508 | } | |
2509 | ||
2510 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; | |
2511 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
2512 | vmxnet3_adjust_rx_ring_size(adapter); | |
2513 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2514 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2515 | /* qid and qid2 for rx queues will be assigned later when num | |
2516 | * of rx queues is finalized after allocating intrs */ | |
2517 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2518 | rq->adapter = adapter; | |
2519 | err = vmxnet3_rq_create(rq, adapter); | |
2520 | if (err) { | |
2521 | if (i == 0) { | |
2522 | netdev_err(adapter->netdev, | |
2523 | "Could not allocate any rx queues. " | |
2524 | "Aborting.\n"); | |
2525 | goto queue_err; | |
2526 | } else { | |
2527 | netdev_info(adapter->netdev, | |
2528 | "Number of rx queues changed " | |
2529 | "to : %d.\n", i); | |
2530 | adapter->num_rx_queues = i; | |
2531 | err = 0; | |
2532 | break; | |
2533 | } | |
2534 | } | |
2535 | } | |
2536 | return err; | |
2537 | queue_err: | |
2538 | vmxnet3_tq_destroy_all(adapter); | |
2539 | return err; | |
2540 | } | |
2541 | ||
2542 | static int | |
2543 | vmxnet3_open(struct net_device *netdev) | |
2544 | { | |
2545 | struct vmxnet3_adapter *adapter; | |
2546 | int err, i; | |
2547 | ||
2548 | adapter = netdev_priv(netdev); | |
2549 | ||
2550 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2551 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
2552 | ||
2553 | err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE, | |
2554 | VMXNET3_DEF_RX_RING_SIZE, | |
2555 | VMXNET3_DEF_RX_RING_SIZE); | |
2556 | if (err) | |
2557 | goto queue_err; | |
2558 | ||
2559 | err = vmxnet3_activate_dev(adapter); | |
2560 | if (err) | |
2561 | goto activate_err; | |
2562 | ||
2563 | return 0; | |
2564 | ||
2565 | activate_err: | |
2566 | vmxnet3_rq_destroy_all(adapter); | |
2567 | vmxnet3_tq_destroy_all(adapter); | |
2568 | queue_err: | |
2569 | return err; | |
2570 | } | |
2571 | ||
2572 | ||
2573 | static int | |
2574 | vmxnet3_close(struct net_device *netdev) | |
2575 | { | |
2576 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2577 | ||
2578 | /* | |
2579 | * Reset_work may be in the middle of resetting the device, wait for its | |
2580 | * completion. | |
2581 | */ | |
2582 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2583 | msleep(1); | |
2584 | ||
2585 | vmxnet3_quiesce_dev(adapter); | |
2586 | ||
2587 | vmxnet3_rq_destroy_all(adapter); | |
2588 | vmxnet3_tq_destroy_all(adapter); | |
2589 | ||
2590 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2591 | ||
2592 | ||
2593 | return 0; | |
2594 | } | |
2595 | ||
2596 | ||
2597 | void | |
2598 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2599 | { | |
2600 | int i; | |
2601 | ||
2602 | /* | |
2603 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2604 | * vmxnet3_close() will deadlock. | |
2605 | */ | |
2606 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2607 | ||
2608 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
2609 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2610 | napi_enable(&adapter->rx_queue[i].napi); | |
2611 | dev_close(adapter->netdev); | |
2612 | } | |
2613 | ||
2614 | ||
2615 | static int | |
2616 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2617 | { | |
2618 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2619 | int err = 0; | |
2620 | ||
2621 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2622 | return -EINVAL; | |
2623 | ||
2624 | netdev->mtu = new_mtu; | |
2625 | ||
2626 | /* | |
2627 | * Reset_work may be in the middle of resetting the device, wait for its | |
2628 | * completion. | |
2629 | */ | |
2630 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2631 | msleep(1); | |
2632 | ||
2633 | if (netif_running(netdev)) { | |
2634 | vmxnet3_quiesce_dev(adapter); | |
2635 | vmxnet3_reset_dev(adapter); | |
2636 | ||
2637 | /* we need to re-create the rx queue based on the new mtu */ | |
2638 | vmxnet3_rq_destroy_all(adapter); | |
2639 | vmxnet3_adjust_rx_ring_size(adapter); | |
2640 | err = vmxnet3_rq_create_all(adapter); | |
2641 | if (err) { | |
2642 | netdev_err(netdev, | |
2643 | "failed to re-create rx queues, " | |
2644 | " error %d. Closing it.\n", err); | |
2645 | goto out; | |
2646 | } | |
2647 | ||
2648 | err = vmxnet3_activate_dev(adapter); | |
2649 | if (err) { | |
2650 | netdev_err(netdev, | |
2651 | "failed to re-activate, error %d. " | |
2652 | "Closing it\n", err); | |
2653 | goto out; | |
2654 | } | |
2655 | } | |
2656 | ||
2657 | out: | |
2658 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2659 | if (err) | |
2660 | vmxnet3_force_close(adapter); | |
2661 | ||
2662 | return err; | |
2663 | } | |
2664 | ||
2665 | ||
2666 | static void | |
2667 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2668 | { | |
2669 | struct net_device *netdev = adapter->netdev; | |
2670 | ||
2671 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | | |
2672 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | | |
2673 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
2674 | NETIF_F_LRO; | |
2675 | if (dma64) | |
2676 | netdev->hw_features |= NETIF_F_HIGHDMA; | |
2677 | netdev->vlan_features = netdev->hw_features & | |
2678 | ~(NETIF_F_HW_VLAN_CTAG_TX | | |
2679 | NETIF_F_HW_VLAN_CTAG_RX); | |
2680 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; | |
2681 | } | |
2682 | ||
2683 | ||
2684 | static void | |
2685 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2686 | { | |
2687 | u32 tmp; | |
2688 | ||
2689 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2690 | *(u32 *)mac = tmp; | |
2691 | ||
2692 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2693 | mac[4] = tmp & 0xff; | |
2694 | mac[5] = (tmp >> 8) & 0xff; | |
2695 | } | |
2696 | ||
2697 | #ifdef CONFIG_PCI_MSI | |
2698 | ||
2699 | /* | |
2700 | * Enable MSIx vectors. | |
2701 | * Returns : | |
2702 | * 0 on successful enabling of required vectors, | |
2703 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required | |
2704 | * could be enabled. | |
2705 | * number of vectors which can be enabled otherwise (this number is smaller | |
2706 | * than VMXNET3_LINUX_MIN_MSIX_VECT) | |
2707 | */ | |
2708 | ||
2709 | static int | |
2710 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, | |
2711 | int vectors) | |
2712 | { | |
2713 | int err = 0, vector_threshold; | |
2714 | vector_threshold = VMXNET3_LINUX_MIN_MSIX_VECT; | |
2715 | ||
2716 | while (vectors >= vector_threshold) { | |
2717 | err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries, | |
2718 | vectors); | |
2719 | if (!err) { | |
2720 | adapter->intr.num_intrs = vectors; | |
2721 | return 0; | |
2722 | } else if (err < 0) { | |
2723 | dev_err(&adapter->netdev->dev, | |
2724 | "Failed to enable MSI-X, error: %d\n", err); | |
2725 | vectors = 0; | |
2726 | } else if (err < vector_threshold) { | |
2727 | break; | |
2728 | } else { | |
2729 | /* If fails to enable required number of MSI-x vectors | |
2730 | * try enabling minimum number of vectors required. | |
2731 | */ | |
2732 | dev_err(&adapter->netdev->dev, | |
2733 | "Failed to enable %d MSI-X, trying %d instead\n", | |
2734 | vectors, vector_threshold); | |
2735 | vectors = vector_threshold; | |
2736 | } | |
2737 | } | |
2738 | ||
2739 | dev_info(&adapter->pdev->dev, | |
2740 | "Number of MSI-X interrupts which can be allocated " | |
2741 | "is lower than min threshold required.\n"); | |
2742 | return err; | |
2743 | } | |
2744 | ||
2745 | ||
2746 | #endif /* CONFIG_PCI_MSI */ | |
2747 | ||
2748 | static void | |
2749 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2750 | { | |
2751 | u32 cfg; | |
2752 | unsigned long flags; | |
2753 | ||
2754 | /* intr settings */ | |
2755 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2756 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2757 | VMXNET3_CMD_GET_CONF_INTR); | |
2758 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2759 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2760 | adapter->intr.type = cfg & 0x3; | |
2761 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2762 | ||
2763 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
2764 | adapter->intr.type = VMXNET3_IT_MSIX; | |
2765 | } | |
2766 | ||
2767 | #ifdef CONFIG_PCI_MSI | |
2768 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
2769 | int vector, err = 0; | |
2770 | ||
2771 | adapter->intr.num_intrs = (adapter->share_intr == | |
2772 | VMXNET3_INTR_TXSHARE) ? 1 : | |
2773 | adapter->num_tx_queues; | |
2774 | adapter->intr.num_intrs += (adapter->share_intr == | |
2775 | VMXNET3_INTR_BUDDYSHARE) ? 0 : | |
2776 | adapter->num_rx_queues; | |
2777 | adapter->intr.num_intrs += 1; /* for link event */ | |
2778 | ||
2779 | adapter->intr.num_intrs = (adapter->intr.num_intrs > | |
2780 | VMXNET3_LINUX_MIN_MSIX_VECT | |
2781 | ? adapter->intr.num_intrs : | |
2782 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
2783 | ||
2784 | for (vector = 0; vector < adapter->intr.num_intrs; vector++) | |
2785 | adapter->intr.msix_entries[vector].entry = vector; | |
2786 | ||
2787 | err = vmxnet3_acquire_msix_vectors(adapter, | |
2788 | adapter->intr.num_intrs); | |
2789 | /* If we cannot allocate one MSIx vector per queue | |
2790 | * then limit the number of rx queues to 1 | |
2791 | */ | |
2792 | if (err == VMXNET3_LINUX_MIN_MSIX_VECT) { | |
2793 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE | |
2794 | || adapter->num_rx_queues != 1) { | |
2795 | adapter->share_intr = VMXNET3_INTR_TXSHARE; | |
2796 | netdev_err(adapter->netdev, | |
2797 | "Number of rx queues : 1\n"); | |
2798 | adapter->num_rx_queues = 1; | |
2799 | adapter->intr.num_intrs = | |
2800 | VMXNET3_LINUX_MIN_MSIX_VECT; | |
2801 | } | |
2802 | return; | |
2803 | } | |
2804 | if (!err) | |
2805 | return; | |
2806 | ||
2807 | /* If we cannot allocate MSIx vectors use only one rx queue */ | |
2808 | dev_info(&adapter->pdev->dev, | |
2809 | "Failed to enable MSI-X, error %d. " | |
2810 | "Limiting #rx queues to 1, try MSI.\n", err); | |
2811 | ||
2812 | adapter->intr.type = VMXNET3_IT_MSI; | |
2813 | } | |
2814 | ||
2815 | if (adapter->intr.type == VMXNET3_IT_MSI) { | |
2816 | int err; | |
2817 | err = pci_enable_msi(adapter->pdev); | |
2818 | if (!err) { | |
2819 | adapter->num_rx_queues = 1; | |
2820 | adapter->intr.num_intrs = 1; | |
2821 | return; | |
2822 | } | |
2823 | } | |
2824 | #endif /* CONFIG_PCI_MSI */ | |
2825 | ||
2826 | adapter->num_rx_queues = 1; | |
2827 | dev_info(&adapter->netdev->dev, | |
2828 | "Using INTx interrupt, #Rx queues: 1.\n"); | |
2829 | adapter->intr.type = VMXNET3_IT_INTX; | |
2830 | ||
2831 | /* INT-X related setting */ | |
2832 | adapter->intr.num_intrs = 1; | |
2833 | } | |
2834 | ||
2835 | ||
2836 | static void | |
2837 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
2838 | { | |
2839 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
2840 | pci_disable_msix(adapter->pdev); | |
2841 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
2842 | pci_disable_msi(adapter->pdev); | |
2843 | else | |
2844 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
2845 | } | |
2846 | ||
2847 | ||
2848 | static void | |
2849 | vmxnet3_tx_timeout(struct net_device *netdev) | |
2850 | { | |
2851 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2852 | adapter->tx_timeout_count++; | |
2853 | ||
2854 | netdev_err(adapter->netdev, "tx hang\n"); | |
2855 | schedule_work(&adapter->work); | |
2856 | netif_wake_queue(adapter->netdev); | |
2857 | } | |
2858 | ||
2859 | ||
2860 | static void | |
2861 | vmxnet3_reset_work(struct work_struct *data) | |
2862 | { | |
2863 | struct vmxnet3_adapter *adapter; | |
2864 | ||
2865 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
2866 | ||
2867 | /* if another thread is resetting the device, no need to proceed */ | |
2868 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2869 | return; | |
2870 | ||
2871 | /* if the device is closed, we must leave it alone */ | |
2872 | rtnl_lock(); | |
2873 | if (netif_running(adapter->netdev)) { | |
2874 | netdev_notice(adapter->netdev, "resetting\n"); | |
2875 | vmxnet3_quiesce_dev(adapter); | |
2876 | vmxnet3_reset_dev(adapter); | |
2877 | vmxnet3_activate_dev(adapter); | |
2878 | } else { | |
2879 | netdev_info(adapter->netdev, "already closed\n"); | |
2880 | } | |
2881 | rtnl_unlock(); | |
2882 | ||
2883 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2884 | } | |
2885 | ||
2886 | ||
2887 | static int | |
2888 | vmxnet3_probe_device(struct pci_dev *pdev, | |
2889 | const struct pci_device_id *id) | |
2890 | { | |
2891 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
2892 | .ndo_open = vmxnet3_open, | |
2893 | .ndo_stop = vmxnet3_close, | |
2894 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
2895 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
2896 | .ndo_change_mtu = vmxnet3_change_mtu, | |
2897 | .ndo_set_features = vmxnet3_set_features, | |
2898 | .ndo_get_stats64 = vmxnet3_get_stats64, | |
2899 | .ndo_tx_timeout = vmxnet3_tx_timeout, | |
2900 | .ndo_set_rx_mode = vmxnet3_set_mc, | |
2901 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, | |
2902 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
2903 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2904 | .ndo_poll_controller = vmxnet3_netpoll, | |
2905 | #endif | |
2906 | }; | |
2907 | int err; | |
2908 | bool dma64 = false; /* stupid gcc */ | |
2909 | u32 ver; | |
2910 | struct net_device *netdev; | |
2911 | struct vmxnet3_adapter *adapter; | |
2912 | u8 mac[ETH_ALEN]; | |
2913 | int size; | |
2914 | int num_tx_queues; | |
2915 | int num_rx_queues; | |
2916 | ||
2917 | if (!pci_msi_enabled()) | |
2918 | enable_mq = 0; | |
2919 | ||
2920 | #ifdef VMXNET3_RSS | |
2921 | if (enable_mq) | |
2922 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
2923 | (int)num_online_cpus()); | |
2924 | else | |
2925 | #endif | |
2926 | num_rx_queues = 1; | |
2927 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); | |
2928 | ||
2929 | if (enable_mq) | |
2930 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
2931 | (int)num_online_cpus()); | |
2932 | else | |
2933 | num_tx_queues = 1; | |
2934 | ||
2935 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); | |
2936 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), | |
2937 | max(num_tx_queues, num_rx_queues)); | |
2938 | dev_info(&pdev->dev, | |
2939 | "# of Tx queues : %d, # of Rx queues : %d\n", | |
2940 | num_tx_queues, num_rx_queues); | |
2941 | ||
2942 | if (!netdev) | |
2943 | return -ENOMEM; | |
2944 | ||
2945 | pci_set_drvdata(pdev, netdev); | |
2946 | adapter = netdev_priv(netdev); | |
2947 | adapter->netdev = netdev; | |
2948 | adapter->pdev = pdev; | |
2949 | ||
2950 | spin_lock_init(&adapter->cmd_lock); | |
2951 | adapter->shared = pci_alloc_consistent(adapter->pdev, | |
2952 | sizeof(struct Vmxnet3_DriverShared), | |
2953 | &adapter->shared_pa); | |
2954 | if (!adapter->shared) { | |
2955 | dev_err(&pdev->dev, "Failed to allocate memory\n"); | |
2956 | err = -ENOMEM; | |
2957 | goto err_alloc_shared; | |
2958 | } | |
2959 | ||
2960 | adapter->num_rx_queues = num_rx_queues; | |
2961 | adapter->num_tx_queues = num_tx_queues; | |
2962 | adapter->rx_buf_per_pkt = 1; | |
2963 | ||
2964 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
2965 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
2966 | adapter->tqd_start = pci_alloc_consistent(adapter->pdev, size, | |
2967 | &adapter->queue_desc_pa); | |
2968 | ||
2969 | if (!adapter->tqd_start) { | |
2970 | dev_err(&pdev->dev, "Failed to allocate memory\n"); | |
2971 | err = -ENOMEM; | |
2972 | goto err_alloc_queue_desc; | |
2973 | } | |
2974 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + | |
2975 | adapter->num_tx_queues); | |
2976 | ||
2977 | adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL); | |
2978 | if (adapter->pm_conf == NULL) { | |
2979 | err = -ENOMEM; | |
2980 | goto err_alloc_pm; | |
2981 | } | |
2982 | ||
2983 | #ifdef VMXNET3_RSS | |
2984 | ||
2985 | adapter->rss_conf = kmalloc(sizeof(struct UPT1_RSSConf), GFP_KERNEL); | |
2986 | if (adapter->rss_conf == NULL) { | |
2987 | err = -ENOMEM; | |
2988 | goto err_alloc_rss; | |
2989 | } | |
2990 | #endif /* VMXNET3_RSS */ | |
2991 | ||
2992 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); | |
2993 | if (err < 0) | |
2994 | goto err_alloc_pci; | |
2995 | ||
2996 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
2997 | if (ver & 1) { | |
2998 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
2999 | } else { | |
3000 | dev_err(&pdev->dev, | |
3001 | "Incompatible h/w version (0x%x) for adapter\n", ver); | |
3002 | err = -EBUSY; | |
3003 | goto err_ver; | |
3004 | } | |
3005 | ||
3006 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3007 | if (ver & 1) { | |
3008 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3009 | } else { | |
3010 | dev_err(&pdev->dev, | |
3011 | "Incompatible upt version (0x%x) for adapter\n", ver); | |
3012 | err = -EBUSY; | |
3013 | goto err_ver; | |
3014 | } | |
3015 | ||
3016 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
3017 | vmxnet3_declare_features(adapter, dma64); | |
3018 | ||
3019 | if (adapter->num_tx_queues == adapter->num_rx_queues) | |
3020 | adapter->share_intr = VMXNET3_INTR_BUDDYSHARE; | |
3021 | else | |
3022 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; | |
3023 | ||
3024 | vmxnet3_alloc_intr_resources(adapter); | |
3025 | ||
3026 | #ifdef VMXNET3_RSS | |
3027 | if (adapter->num_rx_queues > 1 && | |
3028 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3029 | adapter->rss = true; | |
3030 | netdev->hw_features |= NETIF_F_RXHASH; | |
3031 | netdev->features |= NETIF_F_RXHASH; | |
3032 | dev_dbg(&pdev->dev, "RSS is enabled.\n"); | |
3033 | } else { | |
3034 | adapter->rss = false; | |
3035 | } | |
3036 | #endif | |
3037 | ||
3038 | vmxnet3_read_mac_addr(adapter, mac); | |
3039 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3040 | ||
3041 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
3042 | vmxnet3_set_ethtool_ops(netdev); | |
3043 | netdev->watchdog_timeo = 5 * HZ; | |
3044 | ||
3045 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
3046 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
3047 | ||
3048 | if (adapter->intr.type == VMXNET3_IT_MSIX) { | |
3049 | int i; | |
3050 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3051 | netif_napi_add(adapter->netdev, | |
3052 | &adapter->rx_queue[i].napi, | |
3053 | vmxnet3_poll_rx_only, 64); | |
3054 | } | |
3055 | } else { | |
3056 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3057 | vmxnet3_poll, 64); | |
3058 | } | |
3059 | ||
3060 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3061 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3062 | ||
3063 | netif_carrier_off(netdev); | |
3064 | err = register_netdev(netdev); | |
3065 | ||
3066 | if (err) { | |
3067 | dev_err(&pdev->dev, "Failed to register adapter\n"); | |
3068 | goto err_register; | |
3069 | } | |
3070 | ||
3071 | vmxnet3_check_link(adapter, false); | |
3072 | return 0; | |
3073 | ||
3074 | err_register: | |
3075 | vmxnet3_free_intr_resources(adapter); | |
3076 | err_ver: | |
3077 | vmxnet3_free_pci_resources(adapter); | |
3078 | err_alloc_pci: | |
3079 | #ifdef VMXNET3_RSS | |
3080 | kfree(adapter->rss_conf); | |
3081 | err_alloc_rss: | |
3082 | #endif | |
3083 | kfree(adapter->pm_conf); | |
3084 | err_alloc_pm: | |
3085 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, | |
3086 | adapter->queue_desc_pa); | |
3087 | err_alloc_queue_desc: | |
3088 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
3089 | adapter->shared, adapter->shared_pa); | |
3090 | err_alloc_shared: | |
3091 | pci_set_drvdata(pdev, NULL); | |
3092 | free_netdev(netdev); | |
3093 | return err; | |
3094 | } | |
3095 | ||
3096 | ||
3097 | static void | |
3098 | vmxnet3_remove_device(struct pci_dev *pdev) | |
3099 | { | |
3100 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3101 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3102 | int size = 0; | |
3103 | int num_rx_queues; | |
3104 | ||
3105 | #ifdef VMXNET3_RSS | |
3106 | if (enable_mq) | |
3107 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3108 | (int)num_online_cpus()); | |
3109 | else | |
3110 | #endif | |
3111 | num_rx_queues = 1; | |
3112 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); | |
3113 | ||
3114 | cancel_work_sync(&adapter->work); | |
3115 | ||
3116 | unregister_netdev(netdev); | |
3117 | ||
3118 | vmxnet3_free_intr_resources(adapter); | |
3119 | vmxnet3_free_pci_resources(adapter); | |
3120 | #ifdef VMXNET3_RSS | |
3121 | kfree(adapter->rss_conf); | |
3122 | #endif | |
3123 | kfree(adapter->pm_conf); | |
3124 | ||
3125 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3126 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
3127 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, | |
3128 | adapter->queue_desc_pa); | |
3129 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
3130 | adapter->shared, adapter->shared_pa); | |
3131 | free_netdev(netdev); | |
3132 | } | |
3133 | ||
3134 | ||
3135 | #ifdef CONFIG_PM | |
3136 | ||
3137 | static int | |
3138 | vmxnet3_suspend(struct device *device) | |
3139 | { | |
3140 | struct pci_dev *pdev = to_pci_dev(device); | |
3141 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3142 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3143 | struct Vmxnet3_PMConf *pmConf; | |
3144 | struct ethhdr *ehdr; | |
3145 | struct arphdr *ahdr; | |
3146 | u8 *arpreq; | |
3147 | struct in_device *in_dev; | |
3148 | struct in_ifaddr *ifa; | |
3149 | unsigned long flags; | |
3150 | int i = 0; | |
3151 | ||
3152 | if (!netif_running(netdev)) | |
3153 | return 0; | |
3154 | ||
3155 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3156 | napi_disable(&adapter->rx_queue[i].napi); | |
3157 | ||
3158 | vmxnet3_disable_all_intrs(adapter); | |
3159 | vmxnet3_free_irqs(adapter); | |
3160 | vmxnet3_free_intr_resources(adapter); | |
3161 | ||
3162 | netif_device_detach(netdev); | |
3163 | netif_tx_stop_all_queues(netdev); | |
3164 | ||
3165 | /* Create wake-up filters. */ | |
3166 | pmConf = adapter->pm_conf; | |
3167 | memset(pmConf, 0, sizeof(*pmConf)); | |
3168 | ||
3169 | if (adapter->wol & WAKE_UCAST) { | |
3170 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3171 | pmConf->filters[i].maskSize = 1; | |
3172 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3173 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3174 | ||
3175 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
3176 | i++; | |
3177 | } | |
3178 | ||
3179 | if (adapter->wol & WAKE_ARP) { | |
3180 | in_dev = in_dev_get(netdev); | |
3181 | if (!in_dev) | |
3182 | goto skip_arp; | |
3183 | ||
3184 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
3185 | if (!ifa) | |
3186 | goto skip_arp; | |
3187 | ||
3188 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3189 | sizeof(struct arphdr) + /* ARP header */ | |
3190 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3191 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3192 | pmConf->filters[i].maskSize = | |
3193 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3194 | ||
3195 | /* ETH_P_ARP in Ethernet header. */ | |
3196 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3197 | ehdr->h_proto = htons(ETH_P_ARP); | |
3198 | ||
3199 | /* ARPOP_REQUEST in ARP header. */ | |
3200 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3201 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3202 | arpreq = (u8 *)(ahdr + 1); | |
3203 | ||
3204 | /* The Unicast IPv4 address in 'tip' field. */ | |
3205 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
3206 | *(u32 *)arpreq = ifa->ifa_address; | |
3207 | ||
3208 | /* The mask for the relevant bits. */ | |
3209 | pmConf->filters[i].mask[0] = 0x00; | |
3210 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3211 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3212 | pmConf->filters[i].mask[3] = 0x00; | |
3213 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3214 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
3215 | in_dev_put(in_dev); | |
3216 | ||
3217 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; | |
3218 | i++; | |
3219 | } | |
3220 | ||
3221 | skip_arp: | |
3222 | if (adapter->wol & WAKE_MAGIC) | |
3223 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; | |
3224 | ||
3225 | pmConf->numFilters = i; | |
3226 | ||
3227 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); | |
3228 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3229 | *pmConf)); | |
3230 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( | |
3231 | pmConf)); | |
3232 | ||
3233 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3234 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3235 | VMXNET3_CMD_UPDATE_PMCFG); | |
3236 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3237 | ||
3238 | pci_save_state(pdev); | |
3239 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3240 | adapter->wol); | |
3241 | pci_disable_device(pdev); | |
3242 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3243 | ||
3244 | return 0; | |
3245 | } | |
3246 | ||
3247 | ||
3248 | static int | |
3249 | vmxnet3_resume(struct device *device) | |
3250 | { | |
3251 | int err, i = 0; | |
3252 | unsigned long flags; | |
3253 | struct pci_dev *pdev = to_pci_dev(device); | |
3254 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3255 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3256 | struct Vmxnet3_PMConf *pmConf; | |
3257 | ||
3258 | if (!netif_running(netdev)) | |
3259 | return 0; | |
3260 | ||
3261 | /* Destroy wake-up filters. */ | |
3262 | pmConf = adapter->pm_conf; | |
3263 | memset(pmConf, 0, sizeof(*pmConf)); | |
3264 | ||
3265 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); | |
3266 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3267 | *pmConf)); | |
3268 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( | |
3269 | pmConf)); | |
3270 | ||
3271 | netif_device_attach(netdev); | |
3272 | pci_set_power_state(pdev, PCI_D0); | |
3273 | pci_restore_state(pdev); | |
3274 | err = pci_enable_device_mem(pdev); | |
3275 | if (err != 0) | |
3276 | return err; | |
3277 | ||
3278 | pci_enable_wake(pdev, PCI_D0, 0); | |
3279 | ||
3280 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3281 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3282 | VMXNET3_CMD_UPDATE_PMCFG); | |
3283 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3284 | vmxnet3_alloc_intr_resources(adapter); | |
3285 | vmxnet3_request_irqs(adapter); | |
3286 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3287 | napi_enable(&adapter->rx_queue[i].napi); | |
3288 | vmxnet3_enable_all_intrs(adapter); | |
3289 | ||
3290 | return 0; | |
3291 | } | |
3292 | ||
3293 | static const struct dev_pm_ops vmxnet3_pm_ops = { | |
3294 | .suspend = vmxnet3_suspend, | |
3295 | .resume = vmxnet3_resume, | |
3296 | }; | |
3297 | #endif | |
3298 | ||
3299 | static struct pci_driver vmxnet3_driver = { | |
3300 | .name = vmxnet3_driver_name, | |
3301 | .id_table = vmxnet3_pciid_table, | |
3302 | .probe = vmxnet3_probe_device, | |
3303 | .remove = vmxnet3_remove_device, | |
3304 | #ifdef CONFIG_PM | |
3305 | .driver.pm = &vmxnet3_pm_ops, | |
3306 | #endif | |
3307 | }; | |
3308 | ||
3309 | ||
3310 | static int __init | |
3311 | vmxnet3_init_module(void) | |
3312 | { | |
3313 | pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC, | |
3314 | VMXNET3_DRIVER_VERSION_REPORT); | |
3315 | return pci_register_driver(&vmxnet3_driver); | |
3316 | } | |
3317 | ||
3318 | module_init(vmxnet3_init_module); | |
3319 | ||
3320 | ||
3321 | static void | |
3322 | vmxnet3_exit_module(void) | |
3323 | { | |
3324 | pci_unregister_driver(&vmxnet3_driver); | |
3325 | } | |
3326 | ||
3327 | module_exit(vmxnet3_exit_module); | |
3328 | ||
3329 | MODULE_AUTHOR("VMware, Inc."); | |
3330 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3331 | MODULE_LICENSE("GPL v2"); | |
3332 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |