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d1a890fa SB |
1 | /* |
2 | * Linux driver for VMware's vmxnet3 ethernet NIC. | |
3 | * | |
4 | * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; version 2 of the License and no later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more | |
14 | * details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution in | |
21 | * the file called "COPYING". | |
22 | * | |
23 | * Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com> | |
24 | * | |
25 | */ | |
26 | ||
b038b040 SR |
27 | #include <net/ip6_checksum.h> |
28 | ||
d1a890fa SB |
29 | #include "vmxnet3_int.h" |
30 | ||
31 | char vmxnet3_driver_name[] = "vmxnet3"; | |
32 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
33 | ||
d1a890fa SB |
34 | /* |
35 | * PCI Device ID Table | |
36 | * Last entry must be all 0s | |
37 | */ | |
a3aa1884 | 38 | static DEFINE_PCI_DEVICE_TABLE(vmxnet3_pciid_table) = { |
d1a890fa SB |
39 | {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)}, |
40 | {0} | |
41 | }; | |
42 | ||
43 | MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table); | |
44 | ||
45 | static atomic_t devices_found; | |
46 | ||
09c5088e SB |
47 | #define VMXNET3_MAX_DEVICES 10 |
48 | static int enable_mq = 1; | |
49 | static int irq_share_mode; | |
d1a890fa | 50 | |
f9f25026 SB |
51 | static void |
52 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac); | |
53 | ||
d1a890fa SB |
54 | /* |
55 | * Enable/Disable the given intr | |
56 | */ | |
57 | static void | |
58 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
59 | { | |
60 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
61 | } | |
62 | ||
63 | ||
64 | static void | |
65 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
66 | { | |
67 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
68 | } | |
69 | ||
70 | ||
71 | /* | |
72 | * Enable/Disable all intrs used by the device | |
73 | */ | |
74 | static void | |
75 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
76 | { | |
77 | int i; | |
78 | ||
79 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
80 | vmxnet3_enable_intr(adapter, i); | |
6929fe8a RZ |
81 | adapter->shared->devRead.intrConf.intrCtrl &= |
82 | cpu_to_le32(~VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
83 | } |
84 | ||
85 | ||
86 | static void | |
87 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
88 | { | |
89 | int i; | |
90 | ||
6929fe8a RZ |
91 | adapter->shared->devRead.intrConf.intrCtrl |= |
92 | cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
93 | for (i = 0; i < adapter->intr.num_intrs; i++) |
94 | vmxnet3_disable_intr(adapter, i); | |
95 | } | |
96 | ||
97 | ||
98 | static void | |
99 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
100 | { | |
101 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
102 | } | |
103 | ||
104 | ||
105 | static bool | |
106 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
107 | { | |
09c5088e | 108 | return tq->stopped; |
d1a890fa SB |
109 | } |
110 | ||
111 | ||
112 | static void | |
113 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
114 | { | |
115 | tq->stopped = false; | |
09c5088e | 116 | netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue); |
d1a890fa SB |
117 | } |
118 | ||
119 | ||
120 | static void | |
121 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
122 | { | |
123 | tq->stopped = false; | |
09c5088e | 124 | netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
125 | } |
126 | ||
127 | ||
128 | static void | |
129 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
130 | { | |
131 | tq->stopped = true; | |
132 | tq->num_stop++; | |
09c5088e | 133 | netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
134 | } |
135 | ||
136 | ||
137 | /* | |
138 | * Check the link state. This may start or stop the tx queue. | |
139 | */ | |
140 | static void | |
4a1745fc | 141 | vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue) |
d1a890fa SB |
142 | { |
143 | u32 ret; | |
09c5088e | 144 | int i; |
83d0feff | 145 | unsigned long flags; |
d1a890fa | 146 | |
83d0feff | 147 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
148 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); |
149 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff SB |
150 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
151 | ||
d1a890fa SB |
152 | adapter->link_speed = ret >> 16; |
153 | if (ret & 1) { /* Link is up. */ | |
154 | printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n", | |
155 | adapter->netdev->name, adapter->link_speed); | |
156 | if (!netif_carrier_ok(adapter->netdev)) | |
157 | netif_carrier_on(adapter->netdev); | |
158 | ||
09c5088e SB |
159 | if (affectTxQueue) { |
160 | for (i = 0; i < adapter->num_tx_queues; i++) | |
161 | vmxnet3_tq_start(&adapter->tx_queue[i], | |
162 | adapter); | |
163 | } | |
d1a890fa SB |
164 | } else { |
165 | printk(KERN_INFO "%s: NIC Link is Down\n", | |
166 | adapter->netdev->name); | |
167 | if (netif_carrier_ok(adapter->netdev)) | |
168 | netif_carrier_off(adapter->netdev); | |
169 | ||
09c5088e SB |
170 | if (affectTxQueue) { |
171 | for (i = 0; i < adapter->num_tx_queues; i++) | |
172 | vmxnet3_tq_stop(&adapter->tx_queue[i], adapter); | |
173 | } | |
d1a890fa SB |
174 | } |
175 | } | |
176 | ||
d1a890fa SB |
177 | static void |
178 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
179 | { | |
09c5088e | 180 | int i; |
115924b6 | 181 | u32 events = le32_to_cpu(adapter->shared->ecr); |
d1a890fa SB |
182 | if (!events) |
183 | return; | |
184 | ||
185 | vmxnet3_ack_events(adapter, events); | |
186 | ||
187 | /* Check if link state has changed */ | |
188 | if (events & VMXNET3_ECR_LINK) | |
4a1745fc | 189 | vmxnet3_check_link(adapter, true); |
d1a890fa SB |
190 | |
191 | /* Check if there is an error on xmit/recv queues */ | |
192 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
83d0feff | 193 | spin_lock(&adapter->cmd_lock); |
d1a890fa SB |
194 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
195 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
83d0feff | 196 | spin_unlock(&adapter->cmd_lock); |
d1a890fa | 197 | |
09c5088e SB |
198 | for (i = 0; i < adapter->num_tx_queues; i++) |
199 | if (adapter->tqd_start[i].status.stopped) | |
200 | dev_err(&adapter->netdev->dev, | |
201 | "%s: tq[%d] error 0x%x\n", | |
202 | adapter->netdev->name, i, le32_to_cpu( | |
203 | adapter->tqd_start[i].status.error)); | |
204 | for (i = 0; i < adapter->num_rx_queues; i++) | |
205 | if (adapter->rqd_start[i].status.stopped) | |
206 | dev_err(&adapter->netdev->dev, | |
207 | "%s: rq[%d] error 0x%x\n", | |
208 | adapter->netdev->name, i, | |
209 | adapter->rqd_start[i].status.error); | |
d1a890fa SB |
210 | |
211 | schedule_work(&adapter->work); | |
212 | } | |
213 | } | |
214 | ||
115924b6 SB |
215 | #ifdef __BIG_ENDIAN_BITFIELD |
216 | /* | |
217 | * The device expects the bitfields in shared structures to be written in | |
218 | * little endian. When CPU is big endian, the following routines are used to | |
219 | * correctly read and write into ABI. | |
220 | * The general technique used here is : double word bitfields are defined in | |
221 | * opposite order for big endian architecture. Then before reading them in | |
222 | * driver the complete double word is translated using le32_to_cpu. Similarly | |
223 | * After the driver writes into bitfields, cpu_to_le32 is used to translate the | |
224 | * double words into required format. | |
225 | * In order to avoid touching bits in shared structure more than once, temporary | |
226 | * descriptors are used. These are passed as srcDesc to following functions. | |
227 | */ | |
228 | static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc, | |
229 | struct Vmxnet3_RxDesc *dstDesc) | |
230 | { | |
231 | u32 *src = (u32 *)srcDesc + 2; | |
232 | u32 *dst = (u32 *)dstDesc + 2; | |
233 | dstDesc->addr = le64_to_cpu(srcDesc->addr); | |
234 | *dst = le32_to_cpu(*src); | |
235 | dstDesc->ext1 = le32_to_cpu(srcDesc->ext1); | |
236 | } | |
237 | ||
238 | static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc, | |
239 | struct Vmxnet3_TxDesc *dstDesc) | |
240 | { | |
241 | int i; | |
242 | u32 *src = (u32 *)(srcDesc + 1); | |
243 | u32 *dst = (u32 *)(dstDesc + 1); | |
244 | ||
245 | /* Working backwards so that the gen bit is set at the end. */ | |
246 | for (i = 2; i > 0; i--) { | |
247 | src--; | |
248 | dst--; | |
249 | *dst = cpu_to_le32(*src); | |
250 | } | |
251 | } | |
252 | ||
253 | ||
254 | static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc, | |
255 | struct Vmxnet3_RxCompDesc *dstDesc) | |
256 | { | |
257 | int i = 0; | |
258 | u32 *src = (u32 *)srcDesc; | |
259 | u32 *dst = (u32 *)dstDesc; | |
260 | for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) { | |
261 | *dst = le32_to_cpu(*src); | |
262 | src++; | |
263 | dst++; | |
264 | } | |
265 | } | |
266 | ||
267 | ||
268 | /* Used to read bitfield values from double words. */ | |
269 | static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size) | |
270 | { | |
271 | u32 temp = le32_to_cpu(*bitfield); | |
272 | u32 mask = ((1 << size) - 1) << pos; | |
273 | temp &= mask; | |
274 | temp >>= pos; | |
275 | return temp; | |
276 | } | |
277 | ||
278 | ||
279 | ||
280 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
281 | ||
282 | #ifdef __BIG_ENDIAN_BITFIELD | |
283 | ||
284 | # define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \ | |
285 | txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \ | |
286 | VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE) | |
287 | # define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \ | |
288 | txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \ | |
289 | VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE) | |
290 | # define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \ | |
291 | VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \ | |
292 | VMXNET3_TCD_GEN_SIZE) | |
293 | # define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \ | |
294 | VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE) | |
295 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \ | |
296 | (dstrcd) = (tmp); \ | |
297 | vmxnet3_RxCompToCPU((rcd), (tmp)); \ | |
298 | } while (0) | |
299 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \ | |
300 | (dstrxd) = (tmp); \ | |
301 | vmxnet3_RxDescToCPU((rxd), (tmp)); \ | |
302 | } while (0) | |
303 | ||
304 | #else | |
305 | ||
306 | # define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen) | |
307 | # define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop) | |
308 | # define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen) | |
309 | # define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx) | |
310 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd) | |
311 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd) | |
312 | ||
313 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
314 | ||
d1a890fa SB |
315 | |
316 | static void | |
317 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
318 | struct pci_dev *pdev) | |
319 | { | |
320 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
321 | pci_unmap_single(pdev, tbi->dma_addr, tbi->len, | |
322 | PCI_DMA_TODEVICE); | |
323 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
324 | pci_unmap_page(pdev, tbi->dma_addr, tbi->len, | |
325 | PCI_DMA_TODEVICE); | |
326 | else | |
327 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
328 | ||
329 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
330 | } | |
331 | ||
332 | ||
333 | static int | |
334 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
335 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
336 | { | |
337 | struct sk_buff *skb; | |
338 | int entries = 0; | |
339 | ||
340 | /* no out of order completion */ | |
341 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
115924b6 | 342 | BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1); |
d1a890fa SB |
343 | |
344 | skb = tq->buf_info[eop_idx].skb; | |
345 | BUG_ON(skb == NULL); | |
346 | tq->buf_info[eop_idx].skb = NULL; | |
347 | ||
348 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
349 | ||
350 | while (tq->tx_ring.next2comp != eop_idx) { | |
351 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
352 | pdev); | |
353 | ||
354 | /* update next2comp w/o tx_lock. Since we are marking more, | |
355 | * instead of less, tx ring entries avail, the worst case is | |
356 | * that the tx routine incorrectly re-queues a pkt due to | |
357 | * insufficient tx ring entries. | |
358 | */ | |
359 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
360 | entries++; | |
361 | } | |
362 | ||
363 | dev_kfree_skb_any(skb); | |
364 | return entries; | |
365 | } | |
366 | ||
367 | ||
368 | static int | |
369 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
370 | struct vmxnet3_adapter *adapter) | |
371 | { | |
372 | int completed = 0; | |
373 | union Vmxnet3_GenericDesc *gdesc; | |
374 | ||
375 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
115924b6 SB |
376 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { |
377 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( | |
378 | &gdesc->tcd), tq, adapter->pdev, | |
379 | adapter); | |
d1a890fa SB |
380 | |
381 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
382 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
383 | } | |
384 | ||
385 | if (completed) { | |
386 | spin_lock(&tq->tx_lock); | |
387 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
388 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
389 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
390 | netif_carrier_ok(adapter->netdev))) { | |
391 | vmxnet3_tq_wake(tq, adapter); | |
392 | } | |
393 | spin_unlock(&tq->tx_lock); | |
394 | } | |
395 | return completed; | |
396 | } | |
397 | ||
398 | ||
399 | static void | |
400 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
401 | struct vmxnet3_adapter *adapter) | |
402 | { | |
403 | int i; | |
404 | ||
405 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
406 | struct vmxnet3_tx_buf_info *tbi; | |
407 | union Vmxnet3_GenericDesc *gdesc; | |
408 | ||
409 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
410 | gdesc = tq->tx_ring.base + tq->tx_ring.next2comp; | |
411 | ||
412 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
413 | if (tbi->skb) { | |
414 | dev_kfree_skb_any(tbi->skb); | |
415 | tbi->skb = NULL; | |
416 | } | |
417 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
418 | } | |
419 | ||
420 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
421 | for (i = 0; i < tq->tx_ring.size; i++) { | |
422 | BUG_ON(tq->buf_info[i].skb != NULL || | |
423 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
424 | } | |
425 | ||
426 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
427 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
428 | ||
429 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
430 | tq->comp_ring.next2proc = 0; | |
431 | } | |
432 | ||
433 | ||
09c5088e | 434 | static void |
d1a890fa SB |
435 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, |
436 | struct vmxnet3_adapter *adapter) | |
437 | { | |
438 | if (tq->tx_ring.base) { | |
439 | pci_free_consistent(adapter->pdev, tq->tx_ring.size * | |
440 | sizeof(struct Vmxnet3_TxDesc), | |
441 | tq->tx_ring.base, tq->tx_ring.basePA); | |
442 | tq->tx_ring.base = NULL; | |
443 | } | |
444 | if (tq->data_ring.base) { | |
445 | pci_free_consistent(adapter->pdev, tq->data_ring.size * | |
446 | sizeof(struct Vmxnet3_TxDataDesc), | |
447 | tq->data_ring.base, tq->data_ring.basePA); | |
448 | tq->data_ring.base = NULL; | |
449 | } | |
450 | if (tq->comp_ring.base) { | |
451 | pci_free_consistent(adapter->pdev, tq->comp_ring.size * | |
452 | sizeof(struct Vmxnet3_TxCompDesc), | |
453 | tq->comp_ring.base, tq->comp_ring.basePA); | |
454 | tq->comp_ring.base = NULL; | |
455 | } | |
456 | kfree(tq->buf_info); | |
457 | tq->buf_info = NULL; | |
458 | } | |
459 | ||
460 | ||
09c5088e SB |
461 | /* Destroy all tx queues */ |
462 | void | |
463 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
464 | { | |
465 | int i; | |
466 | ||
467 | for (i = 0; i < adapter->num_tx_queues; i++) | |
468 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
469 | } | |
470 | ||
471 | ||
d1a890fa SB |
472 | static void |
473 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
474 | struct vmxnet3_adapter *adapter) | |
475 | { | |
476 | int i; | |
477 | ||
478 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
479 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
480 | sizeof(struct Vmxnet3_TxDesc)); | |
481 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
482 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
483 | ||
484 | memset(tq->data_ring.base, 0, tq->data_ring.size * | |
485 | sizeof(struct Vmxnet3_TxDataDesc)); | |
486 | ||
487 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
488 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
489 | sizeof(struct Vmxnet3_TxCompDesc)); | |
490 | tq->comp_ring.next2proc = 0; | |
491 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
492 | ||
493 | /* reset the bookkeeping data */ | |
494 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
495 | for (i = 0; i < tq->tx_ring.size; i++) | |
496 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
497 | ||
498 | /* stats are not reset */ | |
499 | } | |
500 | ||
501 | ||
502 | static int | |
503 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
504 | struct vmxnet3_adapter *adapter) | |
505 | { | |
506 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || | |
507 | tq->comp_ring.base || tq->buf_info); | |
508 | ||
509 | tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size | |
510 | * sizeof(struct Vmxnet3_TxDesc), | |
511 | &tq->tx_ring.basePA); | |
512 | if (!tq->tx_ring.base) { | |
513 | printk(KERN_ERR "%s: failed to allocate tx ring\n", | |
514 | adapter->netdev->name); | |
515 | goto err; | |
516 | } | |
517 | ||
518 | tq->data_ring.base = pci_alloc_consistent(adapter->pdev, | |
519 | tq->data_ring.size * | |
520 | sizeof(struct Vmxnet3_TxDataDesc), | |
521 | &tq->data_ring.basePA); | |
522 | if (!tq->data_ring.base) { | |
523 | printk(KERN_ERR "%s: failed to allocate data ring\n", | |
524 | adapter->netdev->name); | |
525 | goto err; | |
526 | } | |
527 | ||
528 | tq->comp_ring.base = pci_alloc_consistent(adapter->pdev, | |
529 | tq->comp_ring.size * | |
530 | sizeof(struct Vmxnet3_TxCompDesc), | |
531 | &tq->comp_ring.basePA); | |
532 | if (!tq->comp_ring.base) { | |
533 | printk(KERN_ERR "%s: failed to allocate tx comp ring\n", | |
534 | adapter->netdev->name); | |
535 | goto err; | |
536 | } | |
537 | ||
538 | tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]), | |
539 | GFP_KERNEL); | |
540 | if (!tq->buf_info) { | |
541 | printk(KERN_ERR "%s: failed to allocate tx bufinfo\n", | |
542 | adapter->netdev->name); | |
543 | goto err; | |
544 | } | |
545 | ||
546 | return 0; | |
547 | ||
548 | err: | |
549 | vmxnet3_tq_destroy(tq, adapter); | |
550 | return -ENOMEM; | |
551 | } | |
552 | ||
09c5088e SB |
553 | static void |
554 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
555 | { | |
556 | int i; | |
557 | ||
558 | for (i = 0; i < adapter->num_tx_queues; i++) | |
559 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
560 | } | |
d1a890fa SB |
561 | |
562 | /* | |
563 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
564 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
565 | * are allocated or allocation fails | |
566 | */ | |
567 | ||
568 | static int | |
569 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
570 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
571 | { | |
572 | int num_allocated = 0; | |
573 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
574 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
575 | u32 val; | |
576 | ||
577 | while (num_allocated < num_to_alloc) { | |
578 | struct vmxnet3_rx_buf_info *rbi; | |
579 | union Vmxnet3_GenericDesc *gd; | |
580 | ||
581 | rbi = rbi_base + ring->next2fill; | |
582 | gd = ring->base + ring->next2fill; | |
583 | ||
584 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
585 | if (rbi->skb == NULL) { | |
586 | rbi->skb = dev_alloc_skb(rbi->len + | |
587 | NET_IP_ALIGN); | |
588 | if (unlikely(rbi->skb == NULL)) { | |
589 | rq->stats.rx_buf_alloc_failure++; | |
590 | break; | |
591 | } | |
592 | rbi->skb->dev = adapter->netdev; | |
593 | ||
594 | skb_reserve(rbi->skb, NET_IP_ALIGN); | |
595 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
596 | rbi->skb->data, rbi->len, | |
597 | PCI_DMA_FROMDEVICE); | |
598 | } else { | |
599 | /* rx buffer skipped by the device */ | |
600 | } | |
601 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
602 | } else { | |
603 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
604 | rbi->len != PAGE_SIZE); | |
605 | ||
606 | if (rbi->page == NULL) { | |
607 | rbi->page = alloc_page(GFP_ATOMIC); | |
608 | if (unlikely(rbi->page == NULL)) { | |
609 | rq->stats.rx_buf_alloc_failure++; | |
610 | break; | |
611 | } | |
612 | rbi->dma_addr = pci_map_page(adapter->pdev, | |
613 | rbi->page, 0, PAGE_SIZE, | |
614 | PCI_DMA_FROMDEVICE); | |
615 | } else { | |
616 | /* rx buffers skipped by the device */ | |
617 | } | |
618 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
619 | } | |
620 | ||
621 | BUG_ON(rbi->dma_addr == 0); | |
115924b6 SB |
622 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); |
623 | gd->dword[2] = cpu_to_le32((ring->gen << VMXNET3_RXD_GEN_SHIFT) | |
624 | | val | rbi->len); | |
d1a890fa SB |
625 | |
626 | num_allocated++; | |
627 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
628 | } | |
629 | rq->uncommitted[ring_idx] += num_allocated; | |
630 | ||
f6965582 RD |
631 | dev_dbg(&adapter->netdev->dev, |
632 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp " | |
d1a890fa SB |
633 | "%u, uncommited %u\n", num_allocated, ring->next2fill, |
634 | ring->next2comp, rq->uncommitted[ring_idx]); | |
635 | ||
636 | /* so that the device can distinguish a full ring and an empty ring */ | |
637 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
638 | ||
639 | return num_allocated; | |
640 | } | |
641 | ||
642 | ||
643 | static void | |
644 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
645 | struct vmxnet3_rx_buf_info *rbi) | |
646 | { | |
647 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
648 | skb_shinfo(skb)->nr_frags; | |
649 | ||
650 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
651 | ||
652 | frag->page = rbi->page; | |
653 | frag->page_offset = 0; | |
654 | frag->size = rcd->len; | |
655 | skb->data_len += frag->size; | |
656 | skb_shinfo(skb)->nr_frags++; | |
657 | } | |
658 | ||
659 | ||
660 | static void | |
661 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
662 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
663 | struct vmxnet3_adapter *adapter) | |
664 | { | |
665 | u32 dw2, len; | |
666 | unsigned long buf_offset; | |
667 | int i; | |
668 | union Vmxnet3_GenericDesc *gdesc; | |
669 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
670 | ||
671 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
672 | ||
673 | /* use the previous gen bit for the SOP desc */ | |
674 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
675 | ||
676 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
677 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
678 | ||
679 | /* no need to map the buffer if headers are copied */ | |
680 | if (ctx->copy_size) { | |
115924b6 | 681 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + |
d1a890fa | 682 | tq->tx_ring.next2fill * |
115924b6 SB |
683 | sizeof(struct Vmxnet3_TxDataDesc)); |
684 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); | |
d1a890fa SB |
685 | ctx->sop_txd->dword[3] = 0; |
686 | ||
687 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
688 | tbi->map_type = VMXNET3_MAP_NONE; | |
689 | ||
f6965582 RD |
690 | dev_dbg(&adapter->netdev->dev, |
691 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
115924b6 SB |
692 | tq->tx_ring.next2fill, |
693 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
d1a890fa SB |
694 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); |
695 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
696 | ||
697 | /* use the right gen for non-SOP desc */ | |
698 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
699 | } | |
700 | ||
701 | /* linear part can use multiple tx desc if it's big */ | |
702 | len = skb_headlen(skb) - ctx->copy_size; | |
703 | buf_offset = ctx->copy_size; | |
704 | while (len) { | |
705 | u32 buf_size; | |
706 | ||
1f4b1612 BD |
707 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { |
708 | buf_size = len; | |
709 | dw2 |= len; | |
710 | } else { | |
711 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
712 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
713 | } | |
d1a890fa SB |
714 | |
715 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
716 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
717 | tbi->dma_addr = pci_map_single(adapter->pdev, | |
718 | skb->data + buf_offset, buf_size, | |
719 | PCI_DMA_TODEVICE); | |
720 | ||
1f4b1612 | 721 | tbi->len = buf_size; |
d1a890fa SB |
722 | |
723 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
724 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
725 | ||
115924b6 | 726 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
1f4b1612 | 727 | gdesc->dword[2] = cpu_to_le32(dw2); |
d1a890fa SB |
728 | gdesc->dword[3] = 0; |
729 | ||
f6965582 RD |
730 | dev_dbg(&adapter->netdev->dev, |
731 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
115924b6 SB |
732 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
733 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
734 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
735 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
736 | ||
737 | len -= buf_size; | |
738 | buf_offset += buf_size; | |
739 | } | |
740 | ||
741 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
742 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
743 | ||
744 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
745 | tbi->map_type = VMXNET3_MAP_PAGE; | |
746 | tbi->dma_addr = pci_map_page(adapter->pdev, frag->page, | |
747 | frag->page_offset, frag->size, | |
748 | PCI_DMA_TODEVICE); | |
749 | ||
750 | tbi->len = frag->size; | |
751 | ||
752 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
753 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
754 | ||
115924b6 SB |
755 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
756 | gdesc->dword[2] = cpu_to_le32(dw2 | frag->size); | |
d1a890fa SB |
757 | gdesc->dword[3] = 0; |
758 | ||
f6965582 RD |
759 | dev_dbg(&adapter->netdev->dev, |
760 | "txd[%u]: 0x%llu %u %u\n", | |
115924b6 SB |
761 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
762 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
763 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
764 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
765 | } | |
766 | ||
767 | ctx->eop_txd = gdesc; | |
768 | ||
769 | /* set the last buf_info for the pkt */ | |
770 | tbi->skb = skb; | |
771 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
772 | } | |
773 | ||
774 | ||
09c5088e SB |
775 | /* Init all tx queues */ |
776 | static void | |
777 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
778 | { | |
779 | int i; | |
780 | ||
781 | for (i = 0; i < adapter->num_tx_queues; i++) | |
782 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
783 | } | |
784 | ||
785 | ||
d1a890fa SB |
786 | /* |
787 | * parse and copy relevant protocol headers: | |
788 | * For a tso pkt, relevant headers are L2/3/4 including options | |
789 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
790 | * if it's a TCP/UDP pkt | |
791 | * | |
792 | * Returns: | |
793 | * -1: error happens during parsing | |
794 | * 0: protocol headers parsed, but too big to be copied | |
795 | * 1: protocol headers parsed and copied | |
796 | * | |
797 | * Other effects: | |
798 | * 1. related *ctx fields are updated. | |
799 | * 2. ctx->copy_size is # of bytes copied | |
800 | * 3. the portion copied is guaranteed to be in the linear part | |
801 | * | |
802 | */ | |
803 | static int | |
804 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
805 | struct vmxnet3_tx_ctx *ctx, | |
806 | struct vmxnet3_adapter *adapter) | |
807 | { | |
808 | struct Vmxnet3_TxDataDesc *tdd; | |
809 | ||
0d0b1672 | 810 | if (ctx->mss) { /* TSO */ |
d1a890fa SB |
811 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); |
812 | ctx->l4_hdr_size = ((struct tcphdr *) | |
813 | skb_transport_header(skb))->doff * 4; | |
814 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; | |
815 | } else { | |
d1a890fa | 816 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
0d0b1672 | 817 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); |
d1a890fa SB |
818 | |
819 | if (ctx->ipv4) { | |
820 | struct iphdr *iph = (struct iphdr *) | |
821 | skb_network_header(skb); | |
39d4a96f | 822 | if (iph->protocol == IPPROTO_TCP) |
d1a890fa SB |
823 | ctx->l4_hdr_size = ((struct tcphdr *) |
824 | skb_transport_header(skb))->doff * 4; | |
39d4a96f SB |
825 | else if (iph->protocol == IPPROTO_UDP) |
826 | /* | |
827 | * Use tcp header size so that bytes to | |
828 | * be copied are more than required by | |
829 | * the device. | |
830 | */ | |
d1a890fa | 831 | ctx->l4_hdr_size = |
39d4a96f SB |
832 | sizeof(struct tcphdr); |
833 | else | |
d1a890fa | 834 | ctx->l4_hdr_size = 0; |
d1a890fa SB |
835 | } else { |
836 | /* for simplicity, don't copy L4 headers */ | |
837 | ctx->l4_hdr_size = 0; | |
838 | } | |
839 | ctx->copy_size = ctx->eth_ip_hdr_size + | |
840 | ctx->l4_hdr_size; | |
841 | } else { | |
842 | ctx->eth_ip_hdr_size = 0; | |
843 | ctx->l4_hdr_size = 0; | |
844 | /* copy as much as allowed */ | |
845 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
846 | , skb_headlen(skb)); | |
847 | } | |
848 | ||
849 | /* make sure headers are accessible directly */ | |
850 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
851 | goto err; | |
852 | } | |
853 | ||
854 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
855 | tq->stats.oversized_hdr++; | |
856 | ctx->copy_size = 0; | |
857 | return 0; | |
858 | } | |
859 | ||
860 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
861 | ||
862 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
f6965582 RD |
863 | dev_dbg(&adapter->netdev->dev, |
864 | "copy %u bytes to dataRing[%u]\n", | |
d1a890fa SB |
865 | ctx->copy_size, tq->tx_ring.next2fill); |
866 | return 1; | |
867 | ||
868 | err: | |
869 | return -1; | |
870 | } | |
871 | ||
872 | ||
873 | static void | |
874 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
875 | struct vmxnet3_tx_ctx *ctx) | |
876 | { | |
877 | struct tcphdr *tcph = (struct tcphdr *)skb_transport_header(skb); | |
878 | if (ctx->ipv4) { | |
879 | struct iphdr *iph = (struct iphdr *)skb_network_header(skb); | |
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 = (struct ipv6hdr *)skb_network_header(skb); | |
885 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, | |
886 | IPPROTO_TCP, 0); | |
887 | } | |
888 | } | |
889 | ||
890 | ||
891 | /* | |
892 | * Transmits a pkt thru a given tq | |
893 | * Returns: | |
894 | * NETDEV_TX_OK: descriptors are setup successfully | |
25985edc | 895 | * NETDEV_TX_OK: error occurred, the pkt is dropped |
d1a890fa SB |
896 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped |
897 | * | |
898 | * Side-effects: | |
899 | * 1. tx ring may be changed | |
900 | * 2. tq stats may be updated accordingly | |
901 | * 3. shared->txNumDeferred may be updated | |
902 | */ | |
903 | ||
904 | static int | |
905 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
906 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
907 | { | |
908 | int ret; | |
909 | u32 count; | |
910 | unsigned long flags; | |
911 | struct vmxnet3_tx_ctx ctx; | |
912 | union Vmxnet3_GenericDesc *gdesc; | |
115924b6 SB |
913 | #ifdef __BIG_ENDIAN_BITFIELD |
914 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
915 | union Vmxnet3_GenericDesc tempTxDesc; | |
916 | #endif | |
d1a890fa SB |
917 | |
918 | /* conservatively estimate # of descriptors to use */ | |
919 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + | |
920 | skb_shinfo(skb)->nr_frags + 1; | |
921 | ||
1b803fbf | 922 | ctx.ipv4 = (skb->protocol == cpu_to_be16(ETH_P_IP)); |
d1a890fa SB |
923 | |
924 | ctx.mss = skb_shinfo(skb)->gso_size; | |
925 | if (ctx.mss) { | |
926 | if (skb_header_cloned(skb)) { | |
927 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
928 | GFP_ATOMIC) != 0)) { | |
929 | tq->stats.drop_tso++; | |
930 | goto drop_pkt; | |
931 | } | |
932 | tq->stats.copy_skb_header++; | |
933 | } | |
934 | vmxnet3_prepare_tso(skb, &ctx); | |
935 | } else { | |
936 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
937 | ||
938 | /* non-tso pkts must not use more than | |
939 | * VMXNET3_MAX_TXD_PER_PKT entries | |
940 | */ | |
941 | if (skb_linearize(skb) != 0) { | |
942 | tq->stats.drop_too_many_frags++; | |
943 | goto drop_pkt; | |
944 | } | |
945 | tq->stats.linearized++; | |
946 | ||
947 | /* recalculate the # of descriptors to use */ | |
948 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
949 | } | |
950 | } | |
951 | ||
09c5088e SB |
952 | spin_lock_irqsave(&tq->tx_lock, flags); |
953 | ||
954 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
955 | tq->stats.tx_ring_full++; | |
956 | dev_dbg(&adapter->netdev->dev, | |
957 | "tx queue stopped on %s, next2comp %u" | |
958 | " next2fill %u\n", adapter->netdev->name, | |
959 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
960 | ||
961 | vmxnet3_tq_stop(tq, adapter); | |
962 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
963 | return NETDEV_TX_BUSY; | |
964 | } | |
965 | ||
966 | ||
d1a890fa SB |
967 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); |
968 | if (ret >= 0) { | |
969 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
970 | /* hdrs parsed, check against other limits */ | |
971 | if (ctx.mss) { | |
972 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
973 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
974 | goto hdr_too_big; | |
975 | } | |
976 | } else { | |
977 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
978 | if (unlikely(ctx.eth_ip_hdr_size + | |
979 | skb->csum_offset > | |
980 | VMXNET3_MAX_CSUM_OFFSET)) { | |
981 | goto hdr_too_big; | |
982 | } | |
983 | } | |
984 | } | |
985 | } else { | |
986 | tq->stats.drop_hdr_inspect_err++; | |
f955e141 | 987 | goto unlock_drop_pkt; |
d1a890fa SB |
988 | } |
989 | ||
d1a890fa SB |
990 | /* fill tx descs related to addr & len */ |
991 | vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter); | |
992 | ||
993 | /* setup the EOP desc */ | |
115924b6 | 994 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); |
d1a890fa SB |
995 | |
996 | /* setup the SOP desc */ | |
115924b6 SB |
997 | #ifdef __BIG_ENDIAN_BITFIELD |
998 | gdesc = &tempTxDesc; | |
999 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1000 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1001 | #else | |
d1a890fa | 1002 | gdesc = ctx.sop_txd; |
115924b6 | 1003 | #endif |
d1a890fa SB |
1004 | if (ctx.mss) { |
1005 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1006 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1007 | gdesc->txd.msscof = ctx.mss; | |
115924b6 SB |
1008 | le32_add_cpu(&tq->shared->txNumDeferred, (skb->len - |
1009 | gdesc->txd.hlen + ctx.mss - 1) / ctx.mss); | |
d1a890fa SB |
1010 | } else { |
1011 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1012 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1013 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1014 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1015 | skb->csum_offset; | |
1016 | } else { | |
1017 | gdesc->txd.om = 0; | |
1018 | gdesc->txd.msscof = 0; | |
1019 | } | |
115924b6 | 1020 | le32_add_cpu(&tq->shared->txNumDeferred, 1); |
d1a890fa SB |
1021 | } |
1022 | ||
1023 | if (vlan_tx_tag_present(skb)) { | |
1024 | gdesc->txd.ti = 1; | |
1025 | gdesc->txd.tci = vlan_tx_tag_get(skb); | |
1026 | } | |
1027 | ||
115924b6 SB |
1028 | /* finally flips the GEN bit of the SOP desc. */ |
1029 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1030 | VMXNET3_TXD_GEN); | |
1031 | #ifdef __BIG_ENDIAN_BITFIELD | |
1032 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1033 | * place. | |
1034 | */ | |
1035 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1036 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1037 | gdesc = ctx.sop_txd; | |
1038 | #endif | |
f6965582 RD |
1039 | dev_dbg(&adapter->netdev->dev, |
1040 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", | |
d1a890fa | 1041 | (u32)((union Vmxnet3_GenericDesc *)ctx.sop_txd - |
115924b6 SB |
1042 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), |
1043 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
d1a890fa SB |
1044 | |
1045 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1046 | ||
115924b6 SB |
1047 | if (le32_to_cpu(tq->shared->txNumDeferred) >= |
1048 | le32_to_cpu(tq->shared->txThreshold)) { | |
d1a890fa | 1049 | tq->shared->txNumDeferred = 0; |
09c5088e SB |
1050 | VMXNET3_WRITE_BAR0_REG(adapter, |
1051 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
d1a890fa SB |
1052 | tq->tx_ring.next2fill); |
1053 | } | |
d1a890fa SB |
1054 | |
1055 | return NETDEV_TX_OK; | |
1056 | ||
1057 | hdr_too_big: | |
1058 | tq->stats.drop_oversized_hdr++; | |
f955e141 DC |
1059 | unlock_drop_pkt: |
1060 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
d1a890fa SB |
1061 | drop_pkt: |
1062 | tq->stats.drop_total++; | |
1063 | dev_kfree_skb(skb); | |
1064 | return NETDEV_TX_OK; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | static netdev_tx_t | |
1069 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1070 | { | |
1071 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1072 | |
09c5088e SB |
1073 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); |
1074 | return vmxnet3_tq_xmit(skb, | |
1075 | &adapter->tx_queue[skb->queue_mapping], | |
1076 | adapter, netdev); | |
d1a890fa SB |
1077 | } |
1078 | ||
1079 | ||
1080 | static void | |
1081 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1082 | struct sk_buff *skb, | |
1083 | union Vmxnet3_GenericDesc *gdesc) | |
1084 | { | |
1085 | if (!gdesc->rcd.cnc && adapter->rxcsum) { | |
1086 | /* typical case: TCP/UDP over IP and both csums are correct */ | |
115924b6 | 1087 | if ((le32_to_cpu(gdesc->dword[3]) & VMXNET3_RCD_CSUM_OK) == |
d1a890fa SB |
1088 | VMXNET3_RCD_CSUM_OK) { |
1089 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1090 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1091 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
1092 | BUG_ON(gdesc->rcd.frg); | |
1093 | } else { | |
1094 | if (gdesc->rcd.csum) { | |
1095 | skb->csum = htons(gdesc->rcd.csum); | |
1096 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1097 | } else { | |
bc8acf2c | 1098 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1099 | } |
1100 | } | |
1101 | } else { | |
bc8acf2c | 1102 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1103 | } |
1104 | } | |
1105 | ||
1106 | ||
1107 | static void | |
1108 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1109 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1110 | { | |
1111 | rq->stats.drop_err++; | |
1112 | if (!rcd->fcs) | |
1113 | rq->stats.drop_fcs++; | |
1114 | ||
1115 | rq->stats.drop_total++; | |
1116 | ||
1117 | /* | |
1118 | * We do not unmap and chain the rx buffer to the skb. | |
1119 | * We basically pretend this buffer is not used and will be recycled | |
1120 | * by vmxnet3_rq_alloc_rx_buf() | |
1121 | */ | |
1122 | ||
1123 | /* | |
1124 | * ctx->skb may be NULL if this is the first and the only one | |
1125 | * desc for the pkt | |
1126 | */ | |
1127 | if (ctx->skb) | |
1128 | dev_kfree_skb_irq(ctx->skb); | |
1129 | ||
1130 | ctx->skb = NULL; | |
1131 | } | |
1132 | ||
1133 | ||
1134 | static int | |
1135 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1136 | struct vmxnet3_adapter *adapter, int quota) | |
1137 | { | |
215faf9c JP |
1138 | static const u32 rxprod_reg[2] = { |
1139 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1140 | }; | |
d1a890fa SB |
1141 | u32 num_rxd = 0; |
1142 | struct Vmxnet3_RxCompDesc *rcd; | |
1143 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
115924b6 SB |
1144 | #ifdef __BIG_ENDIAN_BITFIELD |
1145 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1146 | struct Vmxnet3_RxCompDesc rxComp; | |
1147 | #endif | |
1148 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1149 | &rxComp); | |
d1a890fa SB |
1150 | while (rcd->gen == rq->comp_ring.gen) { |
1151 | struct vmxnet3_rx_buf_info *rbi; | |
1152 | struct sk_buff *skb; | |
1153 | int num_to_alloc; | |
1154 | struct Vmxnet3_RxDesc *rxd; | |
1155 | u32 idx, ring_idx; | |
1156 | ||
1157 | if (num_rxd >= quota) { | |
1158 | /* we may stop even before we see the EOP desc of | |
1159 | * the current pkt | |
1160 | */ | |
1161 | break; | |
1162 | } | |
1163 | num_rxd++; | |
09c5088e | 1164 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2); |
d1a890fa | 1165 | idx = rcd->rxdIdx; |
09c5088e | 1166 | ring_idx = rcd->rqID < adapter->num_rx_queues ? 0 : 1; |
115924b6 SB |
1167 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, |
1168 | &rxCmdDesc); | |
d1a890fa SB |
1169 | rbi = rq->buf_info[ring_idx] + idx; |
1170 | ||
115924b6 SB |
1171 | BUG_ON(rxd->addr != rbi->dma_addr || |
1172 | rxd->len != rbi->len); | |
d1a890fa SB |
1173 | |
1174 | if (unlikely(rcd->eop && rcd->err)) { | |
1175 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1176 | goto rcd_done; | |
1177 | } | |
1178 | ||
1179 | if (rcd->sop) { /* first buf of the pkt */ | |
1180 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
1181 | rcd->rqID != rq->qid); | |
1182 | ||
1183 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1184 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1185 | ||
1186 | if (unlikely(rcd->len == 0)) { | |
1187 | /* Pretend the rx buffer is skipped. */ | |
1188 | BUG_ON(!(rcd->sop && rcd->eop)); | |
f6965582 RD |
1189 | dev_dbg(&adapter->netdev->dev, |
1190 | "rxRing[%u][%u] 0 length\n", | |
d1a890fa SB |
1191 | ring_idx, idx); |
1192 | goto rcd_done; | |
1193 | } | |
1194 | ||
1195 | ctx->skb = rbi->skb; | |
1196 | rbi->skb = NULL; | |
1197 | ||
1198 | pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len, | |
1199 | PCI_DMA_FROMDEVICE); | |
1200 | ||
1201 | skb_put(ctx->skb, rcd->len); | |
1202 | } else { | |
1203 | BUG_ON(ctx->skb == NULL); | |
1204 | /* non SOP buffer must be type 1 in most cases */ | |
1205 | if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) { | |
1206 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
1207 | ||
1208 | if (rcd->len) { | |
1209 | pci_unmap_page(adapter->pdev, | |
1210 | rbi->dma_addr, rbi->len, | |
1211 | PCI_DMA_FROMDEVICE); | |
1212 | ||
1213 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
1214 | rbi->page = NULL; | |
1215 | } | |
1216 | } else { | |
1217 | /* | |
1218 | * The only time a non-SOP buffer is type 0 is | |
1219 | * when it's EOP and error flag is raised, which | |
1220 | * has already been handled. | |
1221 | */ | |
1222 | BUG_ON(true); | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | skb = ctx->skb; | |
1227 | if (rcd->eop) { | |
1228 | skb->len += skb->data_len; | |
1229 | skb->truesize += skb->data_len; | |
1230 | ||
1231 | vmxnet3_rx_csum(adapter, skb, | |
1232 | (union Vmxnet3_GenericDesc *)rcd); | |
1233 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1234 | ||
1235 | if (unlikely(adapter->vlan_grp && rcd->ts)) { | |
1236 | vlan_hwaccel_receive_skb(skb, | |
1237 | adapter->vlan_grp, rcd->tci); | |
1238 | } else { | |
1239 | netif_receive_skb(skb); | |
1240 | } | |
1241 | ||
d1a890fa SB |
1242 | ctx->skb = NULL; |
1243 | } | |
1244 | ||
1245 | rcd_done: | |
1246 | /* device may skip some rx descs */ | |
1247 | rq->rx_ring[ring_idx].next2comp = idx; | |
1248 | VMXNET3_INC_RING_IDX_ONLY(rq->rx_ring[ring_idx].next2comp, | |
1249 | rq->rx_ring[ring_idx].size); | |
1250 | ||
1251 | /* refill rx buffers frequently to avoid starving the h/w */ | |
1252 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(rq->rx_ring + | |
1253 | ring_idx); | |
1254 | if (unlikely(num_to_alloc > VMXNET3_RX_ALLOC_THRESHOLD(rq, | |
1255 | ring_idx, adapter))) { | |
1256 | vmxnet3_rq_alloc_rx_buf(rq, ring_idx, num_to_alloc, | |
1257 | adapter); | |
1258 | ||
1259 | /* if needed, update the register */ | |
1260 | if (unlikely(rq->shared->updateRxProd)) { | |
1261 | VMXNET3_WRITE_BAR0_REG(adapter, | |
1262 | rxprod_reg[ring_idx] + rq->qid * 8, | |
1263 | rq->rx_ring[ring_idx].next2fill); | |
1264 | rq->uncommitted[ring_idx] = 0; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
115924b6 SB |
1269 | vmxnet3_getRxComp(rcd, |
1270 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); | |
d1a890fa SB |
1271 | } |
1272 | ||
1273 | return num_rxd; | |
1274 | } | |
1275 | ||
1276 | ||
1277 | static void | |
1278 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1279 | struct vmxnet3_adapter *adapter) | |
1280 | { | |
1281 | u32 i, ring_idx; | |
1282 | struct Vmxnet3_RxDesc *rxd; | |
1283 | ||
1284 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1285 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
115924b6 SB |
1286 | #ifdef __BIG_ENDIAN_BITFIELD |
1287 | struct Vmxnet3_RxDesc rxDesc; | |
1288 | #endif | |
1289 | vmxnet3_getRxDesc(rxd, | |
1290 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
d1a890fa SB |
1291 | |
1292 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1293 | rq->buf_info[ring_idx][i].skb) { | |
1294 | pci_unmap_single(adapter->pdev, rxd->addr, | |
1295 | rxd->len, PCI_DMA_FROMDEVICE); | |
1296 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1297 | rq->buf_info[ring_idx][i].skb = NULL; | |
1298 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1299 | rq->buf_info[ring_idx][i].page) { | |
1300 | pci_unmap_page(adapter->pdev, rxd->addr, | |
1301 | rxd->len, PCI_DMA_FROMDEVICE); | |
1302 | put_page(rq->buf_info[ring_idx][i].page); | |
1303 | rq->buf_info[ring_idx][i].page = NULL; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1308 | rq->rx_ring[ring_idx].next2fill = | |
1309 | rq->rx_ring[ring_idx].next2comp = 0; | |
1310 | rq->uncommitted[ring_idx] = 0; | |
1311 | } | |
1312 | ||
1313 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1314 | rq->comp_ring.next2proc = 0; | |
1315 | } | |
1316 | ||
1317 | ||
09c5088e SB |
1318 | static void |
1319 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1320 | { | |
1321 | int i; | |
1322 | ||
1323 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1324 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1325 | } | |
1326 | ||
1327 | ||
d1a890fa SB |
1328 | void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, |
1329 | struct vmxnet3_adapter *adapter) | |
1330 | { | |
1331 | int i; | |
1332 | int j; | |
1333 | ||
1334 | /* all rx buffers must have already been freed */ | |
1335 | for (i = 0; i < 2; i++) { | |
1336 | if (rq->buf_info[i]) { | |
1337 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1338 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | ||
1343 | kfree(rq->buf_info[0]); | |
1344 | ||
1345 | for (i = 0; i < 2; i++) { | |
1346 | if (rq->rx_ring[i].base) { | |
1347 | pci_free_consistent(adapter->pdev, rq->rx_ring[i].size | |
1348 | * sizeof(struct Vmxnet3_RxDesc), | |
1349 | rq->rx_ring[i].base, | |
1350 | rq->rx_ring[i].basePA); | |
1351 | rq->rx_ring[i].base = NULL; | |
1352 | } | |
1353 | rq->buf_info[i] = NULL; | |
1354 | } | |
1355 | ||
1356 | if (rq->comp_ring.base) { | |
1357 | pci_free_consistent(adapter->pdev, rq->comp_ring.size * | |
1358 | sizeof(struct Vmxnet3_RxCompDesc), | |
1359 | rq->comp_ring.base, rq->comp_ring.basePA); | |
1360 | rq->comp_ring.base = NULL; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | ||
1365 | static int | |
1366 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1367 | struct vmxnet3_adapter *adapter) | |
1368 | { | |
1369 | int i; | |
1370 | ||
1371 | /* initialize buf_info */ | |
1372 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1373 | ||
1374 | /* 1st buf for a pkt is skbuff */ | |
1375 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1376 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1377 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1378 | } else { /* subsequent bufs for a pkt is frag */ | |
1379 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1380 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1381 | } | |
1382 | } | |
1383 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1384 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1385 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1386 | } | |
1387 | ||
1388 | /* reset internal state and allocate buffers for both rings */ | |
1389 | for (i = 0; i < 2; i++) { | |
1390 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
1391 | rq->uncommitted[i] = 0; | |
1392 | ||
1393 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1394 | sizeof(struct Vmxnet3_RxDesc)); | |
1395 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1396 | } | |
1397 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1398 | adapter) == 0) { | |
1399 | /* at least has 1 rx buffer for the 1st ring */ | |
1400 | return -ENOMEM; | |
1401 | } | |
1402 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1403 | ||
1404 | /* reset the comp ring */ | |
1405 | rq->comp_ring.next2proc = 0; | |
1406 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1407 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1408 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1409 | ||
1410 | /* reset rxctx */ | |
1411 | rq->rx_ctx.skb = NULL; | |
1412 | ||
1413 | /* stats are not reset */ | |
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | ||
09c5088e SB |
1418 | static int |
1419 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1420 | { | |
1421 | int i, err = 0; | |
1422 | ||
1423 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1424 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1425 | if (unlikely(err)) { | |
1426 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1427 | "initialize rx queue%i\n", | |
1428 | adapter->netdev->name, i); | |
1429 | break; | |
1430 | } | |
1431 | } | |
1432 | return err; | |
1433 | ||
1434 | } | |
1435 | ||
1436 | ||
d1a890fa SB |
1437 | static int |
1438 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1439 | { | |
1440 | int i; | |
1441 | size_t sz; | |
1442 | struct vmxnet3_rx_buf_info *bi; | |
1443 | ||
1444 | for (i = 0; i < 2; i++) { | |
1445 | ||
1446 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
1447 | rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz, | |
1448 | &rq->rx_ring[i].basePA); | |
1449 | if (!rq->rx_ring[i].base) { | |
1450 | printk(KERN_ERR "%s: failed to allocate rx ring %d\n", | |
1451 | adapter->netdev->name, i); | |
1452 | goto err; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
1457 | rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz, | |
1458 | &rq->comp_ring.basePA); | |
1459 | if (!rq->comp_ring.base) { | |
1460 | printk(KERN_ERR "%s: failed to allocate rx comp ring\n", | |
1461 | adapter->netdev->name); | |
1462 | goto err; | |
1463 | } | |
1464 | ||
1465 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1466 | rq->rx_ring[1].size); | |
476c609e | 1467 | bi = kzalloc(sz, GFP_KERNEL); |
d1a890fa SB |
1468 | if (!bi) { |
1469 | printk(KERN_ERR "%s: failed to allocate rx bufinfo\n", | |
1470 | adapter->netdev->name); | |
1471 | goto err; | |
1472 | } | |
d1a890fa SB |
1473 | rq->buf_info[0] = bi; |
1474 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1475 | ||
1476 | return 0; | |
1477 | ||
1478 | err: | |
1479 | vmxnet3_rq_destroy(rq, adapter); | |
1480 | return -ENOMEM; | |
1481 | } | |
1482 | ||
1483 | ||
09c5088e SB |
1484 | static int |
1485 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1486 | { | |
1487 | int i, err = 0; | |
1488 | ||
1489 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1490 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1491 | if (unlikely(err)) { | |
1492 | dev_err(&adapter->netdev->dev, | |
1493 | "%s: failed to create rx queue%i\n", | |
1494 | adapter->netdev->name, i); | |
1495 | goto err_out; | |
1496 | } | |
1497 | } | |
1498 | return err; | |
1499 | err_out: | |
1500 | vmxnet3_rq_destroy_all(adapter); | |
1501 | return err; | |
1502 | ||
1503 | } | |
1504 | ||
1505 | /* Multiple queue aware polling function for tx and rx */ | |
1506 | ||
d1a890fa SB |
1507 | static int |
1508 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1509 | { | |
09c5088e | 1510 | int rcd_done = 0, i; |
d1a890fa SB |
1511 | if (unlikely(adapter->shared->ecr)) |
1512 | vmxnet3_process_events(adapter); | |
09c5088e SB |
1513 | for (i = 0; i < adapter->num_tx_queues; i++) |
1514 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
d1a890fa | 1515 | |
09c5088e SB |
1516 | for (i = 0; i < adapter->num_rx_queues; i++) |
1517 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1518 | adapter, budget); | |
1519 | return rcd_done; | |
d1a890fa SB |
1520 | } |
1521 | ||
1522 | ||
1523 | static int | |
1524 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1525 | { | |
09c5088e SB |
1526 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, |
1527 | struct vmxnet3_rx_queue, napi); | |
1528 | int rxd_done; | |
1529 | ||
1530 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1531 | ||
1532 | if (rxd_done < budget) { | |
1533 | napi_complete(napi); | |
1534 | vmxnet3_enable_all_intrs(rx_queue->adapter); | |
1535 | } | |
1536 | return rxd_done; | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1541 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1542 | */ | |
1543 | ||
1544 | static int | |
1545 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1546 | { | |
1547 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1548 | struct vmxnet3_rx_queue, napi); | |
1549 | struct vmxnet3_adapter *adapter = rq->adapter; | |
d1a890fa SB |
1550 | int rxd_done; |
1551 | ||
09c5088e SB |
1552 | /* When sharing interrupt with corresponding tx queue, process |
1553 | * tx completions in that queue as well | |
1554 | */ | |
1555 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1556 | struct vmxnet3_tx_queue *tq = | |
1557 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1558 | vmxnet3_tq_tx_complete(tq, adapter); | |
1559 | } | |
1560 | ||
1561 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
d1a890fa SB |
1562 | |
1563 | if (rxd_done < budget) { | |
1564 | napi_complete(napi); | |
09c5088e | 1565 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); |
d1a890fa SB |
1566 | } |
1567 | return rxd_done; | |
1568 | } | |
1569 | ||
1570 | ||
09c5088e SB |
1571 | #ifdef CONFIG_PCI_MSI |
1572 | ||
1573 | /* | |
1574 | * Handle completion interrupts on tx queues | |
1575 | * Returns whether or not the intr is handled | |
1576 | */ | |
1577 | ||
1578 | static irqreturn_t | |
1579 | vmxnet3_msix_tx(int irq, void *data) | |
1580 | { | |
1581 | struct vmxnet3_tx_queue *tq = data; | |
1582 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1583 | ||
1584 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1585 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1586 | ||
1587 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1588 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1589 | int i; | |
1590 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1591 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1592 | vmxnet3_tq_tx_complete(txq, adapter); | |
1593 | } | |
1594 | } else { | |
1595 | vmxnet3_tq_tx_complete(tq, adapter); | |
1596 | } | |
1597 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1598 | ||
1599 | return IRQ_HANDLED; | |
1600 | } | |
1601 | ||
1602 | ||
1603 | /* | |
1604 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1605 | * intr is handled | |
1606 | */ | |
1607 | ||
1608 | static irqreturn_t | |
1609 | vmxnet3_msix_rx(int irq, void *data) | |
1610 | { | |
1611 | struct vmxnet3_rx_queue *rq = data; | |
1612 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1613 | ||
1614 | /* disable intr if needed */ | |
1615 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1616 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1617 | napi_schedule(&rq->napi); | |
1618 | ||
1619 | return IRQ_HANDLED; | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | *---------------------------------------------------------------------------- | |
1624 | * | |
1625 | * vmxnet3_msix_event -- | |
1626 | * | |
1627 | * vmxnet3 msix event intr handler | |
1628 | * | |
1629 | * Result: | |
1630 | * whether or not the intr is handled | |
1631 | * | |
1632 | *---------------------------------------------------------------------------- | |
1633 | */ | |
1634 | ||
1635 | static irqreturn_t | |
1636 | vmxnet3_msix_event(int irq, void *data) | |
1637 | { | |
1638 | struct net_device *dev = data; | |
1639 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1640 | ||
1641 | /* disable intr if needed */ | |
1642 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1643 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
1644 | ||
1645 | if (adapter->shared->ecr) | |
1646 | vmxnet3_process_events(adapter); | |
1647 | ||
1648 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
1649 | ||
1650 | return IRQ_HANDLED; | |
1651 | } | |
1652 | ||
1653 | #endif /* CONFIG_PCI_MSI */ | |
1654 | ||
1655 | ||
d1a890fa SB |
1656 | /* Interrupt handler for vmxnet3 */ |
1657 | static irqreturn_t | |
1658 | vmxnet3_intr(int irq, void *dev_id) | |
1659 | { | |
1660 | struct net_device *dev = dev_id; | |
1661 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1662 | ||
09c5088e | 1663 | if (adapter->intr.type == VMXNET3_IT_INTX) { |
d1a890fa SB |
1664 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); |
1665 | if (unlikely(icr == 0)) | |
1666 | /* not ours */ | |
1667 | return IRQ_NONE; | |
1668 | } | |
1669 | ||
1670 | ||
1671 | /* disable intr if needed */ | |
1672 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
09c5088e | 1673 | vmxnet3_disable_all_intrs(adapter); |
d1a890fa | 1674 | |
09c5088e | 1675 | napi_schedule(&adapter->rx_queue[0].napi); |
d1a890fa SB |
1676 | |
1677 | return IRQ_HANDLED; | |
1678 | } | |
1679 | ||
1680 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1681 | ||
d1a890fa SB |
1682 | /* netpoll callback. */ |
1683 | static void | |
1684 | vmxnet3_netpoll(struct net_device *netdev) | |
1685 | { | |
1686 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1687 | |
09c5088e SB |
1688 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) |
1689 | vmxnet3_disable_all_intrs(adapter); | |
1690 | ||
1691 | vmxnet3_do_poll(adapter, adapter->rx_queue[0].rx_ring[0].size); | |
1692 | vmxnet3_enable_all_intrs(adapter); | |
d1a890fa | 1693 | |
d1a890fa | 1694 | } |
09c5088e | 1695 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
d1a890fa SB |
1696 | |
1697 | static int | |
1698 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1699 | { | |
09c5088e SB |
1700 | struct vmxnet3_intr *intr = &adapter->intr; |
1701 | int err = 0, i; | |
1702 | int vector = 0; | |
d1a890fa | 1703 | |
8f7e524c | 1704 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1705 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
1706 | for (i = 0; i < adapter->num_tx_queues; i++) { |
1707 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1708 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
1709 | adapter->netdev->name, vector); | |
1710 | err = request_irq( | |
1711 | intr->msix_entries[vector].vector, | |
1712 | vmxnet3_msix_tx, 0, | |
1713 | adapter->tx_queue[i].name, | |
1714 | &adapter->tx_queue[i]); | |
1715 | } else { | |
1716 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
1717 | adapter->netdev->name, vector); | |
1718 | } | |
1719 | if (err) { | |
1720 | dev_err(&adapter->netdev->dev, | |
1721 | "Failed to request irq for MSIX, %s, " | |
1722 | "error %d\n", | |
1723 | adapter->tx_queue[i].name, err); | |
1724 | return err; | |
1725 | } | |
1726 | ||
1727 | /* Handle the case where only 1 MSIx was allocated for | |
1728 | * all tx queues */ | |
1729 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1730 | for (; i < adapter->num_tx_queues; i++) | |
1731 | adapter->tx_queue[i].comp_ring.intr_idx | |
1732 | = vector; | |
1733 | vector++; | |
1734 | break; | |
1735 | } else { | |
1736 | adapter->tx_queue[i].comp_ring.intr_idx | |
1737 | = vector++; | |
1738 | } | |
1739 | } | |
1740 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
1741 | vector = 0; | |
1742 | ||
1743 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1744 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
1745 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
1746 | adapter->netdev->name, vector); | |
1747 | else | |
1748 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
1749 | adapter->netdev->name, vector); | |
1750 | err = request_irq(intr->msix_entries[vector].vector, | |
1751 | vmxnet3_msix_rx, 0, | |
1752 | adapter->rx_queue[i].name, | |
1753 | &(adapter->rx_queue[i])); | |
1754 | if (err) { | |
1755 | printk(KERN_ERR "Failed to request irq for MSIX" | |
1756 | ", %s, error %d\n", | |
1757 | adapter->rx_queue[i].name, err); | |
1758 | return err; | |
1759 | } | |
1760 | ||
1761 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
1762 | } | |
1763 | ||
1764 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
1765 | adapter->netdev->name, vector); | |
1766 | err = request_irq(intr->msix_entries[vector].vector, | |
1767 | vmxnet3_msix_event, 0, | |
1768 | intr->event_msi_vector_name, adapter->netdev); | |
1769 | intr->event_intr_idx = vector; | |
1770 | ||
1771 | } else if (intr->type == VMXNET3_IT_MSI) { | |
1772 | adapter->num_rx_queues = 1; | |
d1a890fa SB |
1773 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, |
1774 | adapter->netdev->name, adapter->netdev); | |
09c5088e | 1775 | } else { |
115924b6 | 1776 | #endif |
09c5088e | 1777 | adapter->num_rx_queues = 1; |
d1a890fa SB |
1778 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, |
1779 | IRQF_SHARED, adapter->netdev->name, | |
1780 | adapter->netdev); | |
09c5088e | 1781 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1782 | } |
09c5088e SB |
1783 | #endif |
1784 | intr->num_intrs = vector + 1; | |
1785 | if (err) { | |
d1a890fa | 1786 | printk(KERN_ERR "Failed to request irq %s (intr type:%d), error" |
09c5088e SB |
1787 | ":%d\n", adapter->netdev->name, intr->type, err); |
1788 | } else { | |
1789 | /* Number of rx queues will not change after this */ | |
1790 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1791 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1792 | rq->qid = i; | |
1793 | rq->qid2 = i + adapter->num_rx_queues; | |
1794 | } | |
d1a890fa SB |
1795 | |
1796 | ||
d1a890fa | 1797 | |
09c5088e SB |
1798 | /* init our intr settings */ |
1799 | for (i = 0; i < intr->num_intrs; i++) | |
1800 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
1801 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
1802 | adapter->intr.event_intr_idx = 0; | |
1803 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1804 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
1805 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
1806 | } | |
d1a890fa SB |
1807 | |
1808 | printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors " | |
09c5088e SB |
1809 | "allocated\n", adapter->netdev->name, intr->type, |
1810 | intr->mask_mode, intr->num_intrs); | |
d1a890fa SB |
1811 | } |
1812 | ||
1813 | return err; | |
1814 | } | |
1815 | ||
1816 | ||
1817 | static void | |
1818 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
1819 | { | |
09c5088e SB |
1820 | struct vmxnet3_intr *intr = &adapter->intr; |
1821 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
d1a890fa | 1822 | |
09c5088e | 1823 | switch (intr->type) { |
8f7e524c | 1824 | #ifdef CONFIG_PCI_MSI |
d1a890fa SB |
1825 | case VMXNET3_IT_MSIX: |
1826 | { | |
09c5088e | 1827 | int i, vector = 0; |
d1a890fa | 1828 | |
09c5088e SB |
1829 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { |
1830 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1831 | free_irq(intr->msix_entries[vector++].vector, | |
1832 | &(adapter->tx_queue[i])); | |
1833 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
1834 | break; | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1839 | free_irq(intr->msix_entries[vector++].vector, | |
1840 | &(adapter->rx_queue[i])); | |
1841 | } | |
1842 | ||
1843 | free_irq(intr->msix_entries[vector].vector, | |
1844 | adapter->netdev); | |
1845 | BUG_ON(vector >= intr->num_intrs); | |
d1a890fa SB |
1846 | break; |
1847 | } | |
8f7e524c | 1848 | #endif |
d1a890fa SB |
1849 | case VMXNET3_IT_MSI: |
1850 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1851 | break; | |
1852 | case VMXNET3_IT_INTX: | |
1853 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1854 | break; | |
1855 | default: | |
1856 | BUG_ON(true); | |
1857 | } | |
1858 | } | |
1859 | ||
d1a890fa SB |
1860 | static void |
1861 | vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
1862 | { | |
1863 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1864 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
1865 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
83d0feff | 1866 | unsigned long flags; |
d1a890fa SB |
1867 | |
1868 | if (grp) { | |
1869 | /* add vlan rx stripping. */ | |
1870 | if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) { | |
1871 | int i; | |
d1a890fa SB |
1872 | adapter->vlan_grp = grp; |
1873 | ||
d1a890fa SB |
1874 | /* |
1875 | * Clear entire vfTable; then enable untagged pkts. | |
1876 | * Note: setting one entry in vfTable to non-zero turns | |
1877 | * on VLAN rx filtering. | |
1878 | */ | |
1879 | for (i = 0; i < VMXNET3_VFT_SIZE; i++) | |
1880 | vfTable[i] = 0; | |
1881 | ||
1882 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
83d0feff | 1883 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
1884 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
1885 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
83d0feff | 1886 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
1887 | } else { |
1888 | printk(KERN_ERR "%s: vlan_rx_register when device has " | |
1889 | "no NETIF_F_HW_VLAN_RX\n", netdev->name); | |
1890 | } | |
1891 | } else { | |
1892 | /* remove vlan rx stripping. */ | |
1893 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
1894 | adapter->vlan_grp = NULL; | |
1895 | ||
3843e515 | 1896 | if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) { |
d1a890fa SB |
1897 | int i; |
1898 | ||
1899 | for (i = 0; i < VMXNET3_VFT_SIZE; i++) { | |
1900 | /* clear entire vfTable; this also disables | |
1901 | * VLAN rx filtering | |
1902 | */ | |
1903 | vfTable[i] = 0; | |
1904 | } | |
83d0feff | 1905 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
1906 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
1907 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
83d0feff | 1908 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
1909 | } |
1910 | } | |
1911 | } | |
1912 | ||
1913 | ||
1914 | static void | |
1915 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
1916 | { | |
1917 | if (adapter->vlan_grp) { | |
1918 | u16 vid; | |
1919 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1920 | bool activeVlan = false; | |
1921 | ||
b738127d | 1922 | for (vid = 0; vid < VLAN_N_VID; vid++) { |
d1a890fa SB |
1923 | if (vlan_group_get_device(adapter->vlan_grp, vid)) { |
1924 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1925 | activeVlan = true; | |
1926 | } | |
1927 | } | |
1928 | if (activeVlan) { | |
1929 | /* continue to allow untagged pkts */ | |
1930 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1931 | } | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | ||
1936 | static void | |
1937 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1938 | { | |
1939 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1940 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
83d0feff | 1941 | unsigned long flags; |
d1a890fa SB |
1942 | |
1943 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
83d0feff | 1944 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
1945 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
1946 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
83d0feff | 1947 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
1948 | } |
1949 | ||
1950 | ||
1951 | static void | |
1952 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1953 | { | |
1954 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
1955 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
83d0feff | 1956 | unsigned long flags; |
d1a890fa SB |
1957 | |
1958 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
83d0feff | 1959 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
1960 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
1961 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
83d0feff | 1962 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
1963 | } |
1964 | ||
1965 | ||
1966 | static u8 * | |
1967 | vmxnet3_copy_mc(struct net_device *netdev) | |
1968 | { | |
1969 | u8 *buf = NULL; | |
4cd24eaf | 1970 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; |
d1a890fa SB |
1971 | |
1972 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
1973 | if (sz <= 0xffff) { | |
1974 | /* We may be called with BH disabled */ | |
1975 | buf = kmalloc(sz, GFP_ATOMIC); | |
1976 | if (buf) { | |
22bedad3 | 1977 | struct netdev_hw_addr *ha; |
567ec874 | 1978 | int i = 0; |
d1a890fa | 1979 | |
22bedad3 JP |
1980 | netdev_for_each_mc_addr(ha, netdev) |
1981 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
d1a890fa | 1982 | ETH_ALEN); |
d1a890fa SB |
1983 | } |
1984 | } | |
1985 | return buf; | |
1986 | } | |
1987 | ||
1988 | ||
1989 | static void | |
1990 | vmxnet3_set_mc(struct net_device *netdev) | |
1991 | { | |
1992 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
83d0feff | 1993 | unsigned long flags; |
d1a890fa SB |
1994 | struct Vmxnet3_RxFilterConf *rxConf = |
1995 | &adapter->shared->devRead.rxFilterConf; | |
1996 | u8 *new_table = NULL; | |
1997 | u32 new_mode = VMXNET3_RXM_UCAST; | |
1998 | ||
1999 | if (netdev->flags & IFF_PROMISC) | |
2000 | new_mode |= VMXNET3_RXM_PROMISC; | |
2001 | ||
2002 | if (netdev->flags & IFF_BROADCAST) | |
2003 | new_mode |= VMXNET3_RXM_BCAST; | |
2004 | ||
2005 | if (netdev->flags & IFF_ALLMULTI) | |
2006 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2007 | else | |
4cd24eaf | 2008 | if (!netdev_mc_empty(netdev)) { |
d1a890fa SB |
2009 | new_table = vmxnet3_copy_mc(netdev); |
2010 | if (new_table) { | |
2011 | new_mode |= VMXNET3_RXM_MCAST; | |
115924b6 | 2012 | rxConf->mfTableLen = cpu_to_le16( |
4cd24eaf | 2013 | netdev_mc_count(netdev) * ETH_ALEN); |
115924b6 SB |
2014 | rxConf->mfTablePA = cpu_to_le64(virt_to_phys( |
2015 | new_table)); | |
d1a890fa SB |
2016 | } else { |
2017 | printk(KERN_INFO "%s: failed to copy mcast list" | |
2018 | ", setting ALL_MULTI\n", netdev->name); | |
2019 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | ||
2024 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
2025 | rxConf->mfTableLen = 0; | |
2026 | rxConf->mfTablePA = 0; | |
2027 | } | |
2028 | ||
83d0feff | 2029 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 2030 | if (new_mode != rxConf->rxMode) { |
115924b6 | 2031 | rxConf->rxMode = cpu_to_le32(new_mode); |
d1a890fa SB |
2032 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2033 | VMXNET3_CMD_UPDATE_RX_MODE); | |
2034 | } | |
2035 | ||
2036 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2037 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
83d0feff | 2038 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2039 | |
2040 | kfree(new_table); | |
2041 | } | |
2042 | ||
09c5088e SB |
2043 | void |
2044 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2045 | { | |
2046 | int i; | |
2047 | ||
2048 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2049 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2050 | } | |
2051 | ||
d1a890fa SB |
2052 | |
2053 | /* | |
2054 | * Set up driver_shared based on settings in adapter. | |
2055 | */ | |
2056 | ||
2057 | static void | |
2058 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2059 | { | |
2060 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2061 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2062 | struct Vmxnet3_TxQueueConf *tqc; | |
2063 | struct Vmxnet3_RxQueueConf *rqc; | |
2064 | int i; | |
2065 | ||
2066 | memset(shared, 0, sizeof(*shared)); | |
2067 | ||
2068 | /* driver settings */ | |
115924b6 SB |
2069 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); |
2070 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2071 | VMXNET3_DRIVER_VERSION_NUM); | |
d1a890fa SB |
2072 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? |
2073 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2074 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
115924b6 SB |
2075 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( |
2076 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2077 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2078 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
d1a890fa | 2079 | |
115924b6 SB |
2080 | devRead->misc.ddPA = cpu_to_le64(virt_to_phys(adapter)); |
2081 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); | |
d1a890fa SB |
2082 | |
2083 | /* set up feature flags */ | |
2084 | if (adapter->rxcsum) | |
3843e515 | 2085 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; |
d1a890fa SB |
2086 | |
2087 | if (adapter->lro) { | |
3843e515 | 2088 | devRead->misc.uptFeatures |= UPT1_F_LRO; |
115924b6 | 2089 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); |
d1a890fa | 2090 | } |
54da3d00 | 2091 | if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) |
3843e515 | 2092 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; |
d1a890fa | 2093 | |
115924b6 SB |
2094 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); |
2095 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2096 | devRead->misc.queueDescLen = cpu_to_le32( | |
09c5088e SB |
2097 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + |
2098 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
d1a890fa SB |
2099 | |
2100 | /* tx queue settings */ | |
09c5088e SB |
2101 | devRead->misc.numTxQueues = adapter->num_tx_queues; |
2102 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2103 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2104 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2105 | tqc = &adapter->tqd_start[i].conf; | |
2106 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2107 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2108 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
2109 | tqc->ddPA = cpu_to_le64(virt_to_phys(tq->buf_info)); | |
2110 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); | |
2111 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
2112 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); | |
2113 | tqc->ddLen = cpu_to_le32( | |
2114 | sizeof(struct vmxnet3_tx_buf_info) * | |
2115 | tqc->txRingSize); | |
2116 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2117 | } | |
d1a890fa SB |
2118 | |
2119 | /* rx queue settings */ | |
09c5088e SB |
2120 | devRead->misc.numRxQueues = adapter->num_rx_queues; |
2121 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2122 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2123 | rqc = &adapter->rqd_start[i].conf; | |
2124 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2125 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2126 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
2127 | rqc->ddPA = cpu_to_le64(virt_to_phys( | |
2128 | rq->buf_info)); | |
2129 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); | |
2130 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2131 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2132 | rqc->ddLen = cpu_to_le32( | |
2133 | sizeof(struct vmxnet3_rx_buf_info) * | |
2134 | (rqc->rxRingSize[0] + | |
2135 | rqc->rxRingSize[1])); | |
2136 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
2137 | } | |
2138 | ||
2139 | #ifdef VMXNET3_RSS | |
2140 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2141 | ||
2142 | if (adapter->rss) { | |
2143 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
2144 | devRead->misc.uptFeatures |= UPT1_F_RSS; | |
2145 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2146 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2147 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2148 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2149 | UPT1_RSS_HASH_TYPE_IPV6; | |
2150 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2151 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2152 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
2153 | get_random_bytes(&rssConf->hashKey[0], rssConf->hashKeySize); | |
2154 | for (i = 0; i < rssConf->indTableSize; i++) | |
2155 | rssConf->indTable[i] = i % adapter->num_rx_queues; | |
2156 | ||
2157 | devRead->rssConfDesc.confVer = 1; | |
2158 | devRead->rssConfDesc.confLen = sizeof(*rssConf); | |
2159 | devRead->rssConfDesc.confPA = virt_to_phys(rssConf); | |
2160 | } | |
2161 | ||
2162 | #endif /* VMXNET3_RSS */ | |
d1a890fa SB |
2163 | |
2164 | /* intr settings */ | |
2165 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2166 | VMXNET3_IMM_AUTO; | |
2167 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2168 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2169 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2170 | ||
2171 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
6929fe8a | 2172 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); |
d1a890fa SB |
2173 | |
2174 | /* rx filter settings */ | |
2175 | devRead->rxFilterConf.rxMode = 0; | |
2176 | vmxnet3_restore_vlan(adapter); | |
f9f25026 SB |
2177 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); |
2178 | ||
d1a890fa SB |
2179 | /* the rest are already zeroed */ |
2180 | } | |
2181 | ||
2182 | ||
2183 | int | |
2184 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2185 | { | |
09c5088e | 2186 | int err, i; |
d1a890fa | 2187 | u32 ret; |
83d0feff | 2188 | unsigned long flags; |
d1a890fa | 2189 | |
09c5088e SB |
2190 | dev_dbg(&adapter->netdev->dev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," |
2191 | " ring sizes %u %u %u\n", adapter->netdev->name, | |
2192 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2193 | adapter->tx_queue[0].tx_ring.size, | |
2194 | adapter->rx_queue[0].rx_ring[0].size, | |
2195 | adapter->rx_queue[0].rx_ring[1].size); | |
2196 | ||
2197 | vmxnet3_tq_init_all(adapter); | |
2198 | err = vmxnet3_rq_init_all(adapter); | |
d1a890fa SB |
2199 | if (err) { |
2200 | printk(KERN_ERR "Failed to init rx queue for %s: error %d\n", | |
2201 | adapter->netdev->name, err); | |
2202 | goto rq_err; | |
2203 | } | |
2204 | ||
2205 | err = vmxnet3_request_irqs(adapter); | |
2206 | if (err) { | |
2207 | printk(KERN_ERR "Failed to setup irq for %s: error %d\n", | |
2208 | adapter->netdev->name, err); | |
2209 | goto irq_err; | |
2210 | } | |
2211 | ||
2212 | vmxnet3_setup_driver_shared(adapter); | |
2213 | ||
115924b6 SB |
2214 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( |
2215 | adapter->shared_pa)); | |
2216 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2217 | adapter->shared_pa)); | |
83d0feff | 2218 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2219 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2220 | VMXNET3_CMD_ACTIVATE_DEV); | |
2221 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2222 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2223 | |
2224 | if (ret != 0) { | |
2225 | printk(KERN_ERR "Failed to activate dev %s: error %u\n", | |
2226 | adapter->netdev->name, ret); | |
2227 | err = -EINVAL; | |
2228 | goto activate_err; | |
2229 | } | |
09c5088e SB |
2230 | |
2231 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2232 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2233 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2234 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2235 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2236 | (i * VMXNET3_REG_ALIGN)), | |
2237 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2238 | } | |
d1a890fa SB |
2239 | |
2240 | /* Apply the rx filter settins last. */ | |
2241 | vmxnet3_set_mc(adapter->netdev); | |
2242 | ||
2243 | /* | |
2244 | * Check link state when first activating device. It will start the | |
2245 | * tx queue if the link is up. | |
2246 | */ | |
4a1745fc | 2247 | vmxnet3_check_link(adapter, true); |
09c5088e SB |
2248 | for (i = 0; i < adapter->num_rx_queues; i++) |
2249 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2250 | vmxnet3_enable_all_intrs(adapter); |
2251 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2252 | return 0; | |
2253 | ||
2254 | activate_err: | |
2255 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2256 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2257 | vmxnet3_free_irqs(adapter); | |
2258 | irq_err: | |
2259 | rq_err: | |
2260 | /* free up buffers we allocated */ | |
09c5088e | 2261 | vmxnet3_rq_cleanup_all(adapter); |
d1a890fa SB |
2262 | return err; |
2263 | } | |
2264 | ||
2265 | ||
2266 | void | |
2267 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2268 | { | |
83d0feff SB |
2269 | unsigned long flags; |
2270 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
d1a890fa | 2271 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); |
83d0feff | 2272 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2273 | } |
2274 | ||
2275 | ||
2276 | int | |
2277 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2278 | { | |
09c5088e | 2279 | int i; |
83d0feff | 2280 | unsigned long flags; |
d1a890fa SB |
2281 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) |
2282 | return 0; | |
2283 | ||
2284 | ||
83d0feff | 2285 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2286 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2287 | VMXNET3_CMD_QUIESCE_DEV); | |
83d0feff | 2288 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2289 | vmxnet3_disable_all_intrs(adapter); |
2290 | ||
09c5088e SB |
2291 | for (i = 0; i < adapter->num_rx_queues; i++) |
2292 | napi_disable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2293 | netif_tx_disable(adapter->netdev); |
2294 | adapter->link_speed = 0; | |
2295 | netif_carrier_off(adapter->netdev); | |
2296 | ||
09c5088e SB |
2297 | vmxnet3_tq_cleanup_all(adapter); |
2298 | vmxnet3_rq_cleanup_all(adapter); | |
d1a890fa SB |
2299 | vmxnet3_free_irqs(adapter); |
2300 | return 0; | |
2301 | } | |
2302 | ||
2303 | ||
2304 | static void | |
2305 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2306 | { | |
2307 | u32 tmp; | |
2308 | ||
2309 | tmp = *(u32 *)mac; | |
2310 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2311 | ||
2312 | tmp = (mac[5] << 8) | mac[4]; | |
2313 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2314 | } | |
2315 | ||
2316 | ||
2317 | static int | |
2318 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2319 | { | |
2320 | struct sockaddr *addr = p; | |
2321 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2322 | ||
2323 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2324 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2325 | ||
2326 | return 0; | |
2327 | } | |
2328 | ||
2329 | ||
2330 | /* ==================== initialization and cleanup routines ============ */ | |
2331 | ||
2332 | static int | |
2333 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
2334 | { | |
2335 | int err; | |
2336 | unsigned long mmio_start, mmio_len; | |
2337 | struct pci_dev *pdev = adapter->pdev; | |
2338 | ||
2339 | err = pci_enable_device(pdev); | |
2340 | if (err) { | |
2341 | printk(KERN_ERR "Failed to enable adapter %s: error %d\n", | |
2342 | pci_name(pdev), err); | |
2343 | return err; | |
2344 | } | |
2345 | ||
2346 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
2347 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
2348 | printk(KERN_ERR "pci_set_consistent_dma_mask failed " | |
2349 | "for adapter %s\n", pci_name(pdev)); | |
2350 | err = -EIO; | |
2351 | goto err_set_mask; | |
2352 | } | |
2353 | *dma64 = true; | |
2354 | } else { | |
2355 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
2356 | printk(KERN_ERR "pci_set_dma_mask failed for adapter " | |
2357 | "%s\n", pci_name(pdev)); | |
2358 | err = -EIO; | |
2359 | goto err_set_mask; | |
2360 | } | |
2361 | *dma64 = false; | |
2362 | } | |
2363 | ||
2364 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
2365 | vmxnet3_driver_name); | |
2366 | if (err) { | |
2367 | printk(KERN_ERR "Failed to request region for adapter %s: " | |
2368 | "error %d\n", pci_name(pdev), err); | |
2369 | goto err_set_mask; | |
2370 | } | |
2371 | ||
2372 | pci_set_master(pdev); | |
2373 | ||
2374 | mmio_start = pci_resource_start(pdev, 0); | |
2375 | mmio_len = pci_resource_len(pdev, 0); | |
2376 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2377 | if (!adapter->hw_addr0) { | |
2378 | printk(KERN_ERR "Failed to map bar0 for adapter %s\n", | |
2379 | pci_name(pdev)); | |
2380 | err = -EIO; | |
2381 | goto err_ioremap; | |
2382 | } | |
2383 | ||
2384 | mmio_start = pci_resource_start(pdev, 1); | |
2385 | mmio_len = pci_resource_len(pdev, 1); | |
2386 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2387 | if (!adapter->hw_addr1) { | |
2388 | printk(KERN_ERR "Failed to map bar1 for adapter %s\n", | |
2389 | pci_name(pdev)); | |
2390 | err = -EIO; | |
2391 | goto err_bar1; | |
2392 | } | |
2393 | return 0; | |
2394 | ||
2395 | err_bar1: | |
2396 | iounmap(adapter->hw_addr0); | |
2397 | err_ioremap: | |
2398 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
2399 | err_set_mask: | |
2400 | pci_disable_device(pdev); | |
2401 | return err; | |
2402 | } | |
2403 | ||
2404 | ||
2405 | static void | |
2406 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2407 | { | |
2408 | BUG_ON(!adapter->pdev); | |
2409 | ||
2410 | iounmap(adapter->hw_addr0); | |
2411 | iounmap(adapter->hw_addr1); | |
2412 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2413 | pci_disable_device(adapter->pdev); | |
2414 | } | |
2415 | ||
2416 | ||
2417 | static void | |
2418 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2419 | { | |
09c5088e SB |
2420 | size_t sz, i, ring0_size, ring1_size, comp_size; |
2421 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[0]; | |
2422 | ||
d1a890fa SB |
2423 | |
2424 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
2425 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2426 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2427 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2428 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2429 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2430 | ||
2431 | adapter->rx_buf_per_pkt = 1; | |
2432 | } else { | |
2433 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2434 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2435 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2436 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2437 | } | |
2438 | ||
2439 | /* | |
2440 | * for simplicity, force the ring0 size to be a multiple of | |
2441 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2442 | */ | |
2443 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
09c5088e SB |
2444 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; |
2445 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
a53255d3 | 2446 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / |
09c5088e SB |
2447 | sz * sz); |
2448 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
2449 | comp_size = ring0_size + ring1_size; | |
2450 | ||
2451 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2452 | rq = &adapter->rx_queue[i]; | |
2453 | rq->rx_ring[0].size = ring0_size; | |
2454 | rq->rx_ring[1].size = ring1_size; | |
2455 | rq->comp_ring.size = comp_size; | |
2456 | } | |
d1a890fa SB |
2457 | } |
2458 | ||
2459 | ||
2460 | int | |
2461 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
2462 | u32 rx_ring_size, u32 rx_ring2_size) | |
2463 | { | |
09c5088e SB |
2464 | int err = 0, i; |
2465 | ||
2466 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2467 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2468 | tq->tx_ring.size = tx_ring_size; | |
2469 | tq->data_ring.size = tx_ring_size; | |
2470 | tq->comp_ring.size = tx_ring_size; | |
2471 | tq->shared = &adapter->tqd_start[i].ctrl; | |
2472 | tq->stopped = true; | |
2473 | tq->adapter = adapter; | |
2474 | tq->qid = i; | |
2475 | err = vmxnet3_tq_create(tq, adapter); | |
2476 | /* | |
2477 | * Too late to change num_tx_queues. We cannot do away with | |
2478 | * lesser number of queues than what we asked for | |
2479 | */ | |
2480 | if (err) | |
2481 | goto queue_err; | |
2482 | } | |
d1a890fa | 2483 | |
09c5088e SB |
2484 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; |
2485 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
d1a890fa | 2486 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e SB |
2487 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2488 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2489 | /* qid and qid2 for rx queues will be assigned later when num | |
2490 | * of rx queues is finalized after allocating intrs */ | |
2491 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2492 | rq->adapter = adapter; | |
2493 | err = vmxnet3_rq_create(rq, adapter); | |
2494 | if (err) { | |
2495 | if (i == 0) { | |
2496 | printk(KERN_ERR "Could not allocate any rx" | |
2497 | "queues. Aborting.\n"); | |
2498 | goto queue_err; | |
2499 | } else { | |
2500 | printk(KERN_INFO "Number of rx queues changed " | |
2501 | "to : %d.\n", i); | |
2502 | adapter->num_rx_queues = i; | |
2503 | err = 0; | |
2504 | break; | |
2505 | } | |
2506 | } | |
2507 | } | |
2508 | return err; | |
2509 | queue_err: | |
2510 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2511 | return err; |
2512 | } | |
2513 | ||
2514 | static int | |
2515 | vmxnet3_open(struct net_device *netdev) | |
2516 | { | |
2517 | struct vmxnet3_adapter *adapter; | |
09c5088e | 2518 | int err, i; |
d1a890fa SB |
2519 | |
2520 | adapter = netdev_priv(netdev); | |
2521 | ||
09c5088e SB |
2522 | for (i = 0; i < adapter->num_tx_queues; i++) |
2523 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
d1a890fa SB |
2524 | |
2525 | err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE, | |
2526 | VMXNET3_DEF_RX_RING_SIZE, | |
2527 | VMXNET3_DEF_RX_RING_SIZE); | |
2528 | if (err) | |
2529 | goto queue_err; | |
2530 | ||
2531 | err = vmxnet3_activate_dev(adapter); | |
2532 | if (err) | |
2533 | goto activate_err; | |
2534 | ||
2535 | return 0; | |
2536 | ||
2537 | activate_err: | |
09c5088e SB |
2538 | vmxnet3_rq_destroy_all(adapter); |
2539 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2540 | queue_err: |
2541 | return err; | |
2542 | } | |
2543 | ||
2544 | ||
2545 | static int | |
2546 | vmxnet3_close(struct net_device *netdev) | |
2547 | { | |
2548 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2549 | ||
2550 | /* | |
2551 | * Reset_work may be in the middle of resetting the device, wait for its | |
2552 | * completion. | |
2553 | */ | |
2554 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2555 | msleep(1); | |
2556 | ||
2557 | vmxnet3_quiesce_dev(adapter); | |
2558 | ||
09c5088e SB |
2559 | vmxnet3_rq_destroy_all(adapter); |
2560 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2561 | |
2562 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2563 | ||
2564 | ||
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | ||
2569 | void | |
2570 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2571 | { | |
09c5088e SB |
2572 | int i; |
2573 | ||
d1a890fa SB |
2574 | /* |
2575 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2576 | * vmxnet3_close() will deadlock. | |
2577 | */ | |
2578 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2579 | ||
2580 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
09c5088e SB |
2581 | for (i = 0; i < adapter->num_rx_queues; i++) |
2582 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2583 | dev_close(adapter->netdev); |
2584 | } | |
2585 | ||
2586 | ||
2587 | static int | |
2588 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2589 | { | |
2590 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2591 | int err = 0; | |
2592 | ||
2593 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2594 | return -EINVAL; | |
2595 | ||
2596 | if (new_mtu > 1500 && !adapter->jumbo_frame) | |
2597 | return -EINVAL; | |
2598 | ||
2599 | netdev->mtu = new_mtu; | |
2600 | ||
2601 | /* | |
2602 | * Reset_work may be in the middle of resetting the device, wait for its | |
2603 | * completion. | |
2604 | */ | |
2605 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2606 | msleep(1); | |
2607 | ||
2608 | if (netif_running(netdev)) { | |
2609 | vmxnet3_quiesce_dev(adapter); | |
2610 | vmxnet3_reset_dev(adapter); | |
2611 | ||
2612 | /* we need to re-create the rx queue based on the new mtu */ | |
09c5088e | 2613 | vmxnet3_rq_destroy_all(adapter); |
d1a890fa | 2614 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e | 2615 | err = vmxnet3_rq_create_all(adapter); |
d1a890fa | 2616 | if (err) { |
09c5088e | 2617 | printk(KERN_ERR "%s: failed to re-create rx queues," |
d1a890fa SB |
2618 | " error %d. Closing it.\n", netdev->name, err); |
2619 | goto out; | |
2620 | } | |
2621 | ||
2622 | err = vmxnet3_activate_dev(adapter); | |
2623 | if (err) { | |
2624 | printk(KERN_ERR "%s: failed to re-activate, error %d. " | |
2625 | "Closing it\n", netdev->name, err); | |
2626 | goto out; | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | out: | |
2631 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2632 | if (err) | |
2633 | vmxnet3_force_close(adapter); | |
2634 | ||
2635 | return err; | |
2636 | } | |
2637 | ||
2638 | ||
2639 | static void | |
2640 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2641 | { | |
2642 | struct net_device *netdev = adapter->netdev; | |
2643 | ||
2644 | netdev->features = NETIF_F_SG | | |
2645 | NETIF_F_HW_CSUM | | |
2646 | NETIF_F_HW_VLAN_TX | | |
2647 | NETIF_F_HW_VLAN_RX | | |
2648 | NETIF_F_HW_VLAN_FILTER | | |
2649 | NETIF_F_TSO | | |
2650 | NETIF_F_TSO6 | | |
2651 | NETIF_F_LRO; | |
2652 | ||
2653 | printk(KERN_INFO "features: sg csum vlan jf tso tsoIPv6 lro"); | |
2654 | ||
2655 | adapter->rxcsum = true; | |
2656 | adapter->jumbo_frame = true; | |
2657 | adapter->lro = true; | |
2658 | ||
2659 | if (dma64) { | |
2660 | netdev->features |= NETIF_F_HIGHDMA; | |
2661 | printk(" highDMA"); | |
2662 | } | |
2663 | ||
2664 | netdev->vlan_features = netdev->features; | |
2665 | printk("\n"); | |
2666 | } | |
2667 | ||
2668 | ||
2669 | static void | |
2670 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2671 | { | |
2672 | u32 tmp; | |
2673 | ||
2674 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2675 | *(u32 *)mac = tmp; | |
2676 | ||
2677 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2678 | mac[4] = tmp & 0xff; | |
2679 | mac[5] = (tmp >> 8) & 0xff; | |
2680 | } | |
2681 | ||
09c5088e SB |
2682 | #ifdef CONFIG_PCI_MSI |
2683 | ||
2684 | /* | |
2685 | * Enable MSIx vectors. | |
2686 | * Returns : | |
2687 | * 0 on successful enabling of required vectors, | |
25985edc | 2688 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required |
09c5088e SB |
2689 | * could be enabled. |
2690 | * number of vectors which can be enabled otherwise (this number is smaller | |
2691 | * than VMXNET3_LINUX_MIN_MSIX_VECT) | |
2692 | */ | |
2693 | ||
2694 | static int | |
2695 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, | |
2696 | int vectors) | |
2697 | { | |
2698 | int err = 0, vector_threshold; | |
2699 | vector_threshold = VMXNET3_LINUX_MIN_MSIX_VECT; | |
2700 | ||
2701 | while (vectors >= vector_threshold) { | |
2702 | err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries, | |
2703 | vectors); | |
2704 | if (!err) { | |
2705 | adapter->intr.num_intrs = vectors; | |
2706 | return 0; | |
2707 | } else if (err < 0) { | |
2708 | printk(KERN_ERR "Failed to enable MSI-X for %s, error" | |
2709 | " %d\n", adapter->netdev->name, err); | |
2710 | vectors = 0; | |
2711 | } else if (err < vector_threshold) { | |
2712 | break; | |
2713 | } else { | |
2714 | /* If fails to enable required number of MSI-x vectors | |
7e96fbf2 | 2715 | * try enabling minimum number of vectors required. |
09c5088e SB |
2716 | */ |
2717 | vectors = vector_threshold; | |
2718 | printk(KERN_ERR "Failed to enable %d MSI-X for %s, try" | |
2719 | " %d instead\n", vectors, adapter->netdev->name, | |
2720 | vector_threshold); | |
2721 | } | |
2722 | } | |
2723 | ||
2724 | printk(KERN_INFO "Number of MSI-X interrupts which can be allocatedi" | |
2725 | " are lower than min threshold required.\n"); | |
2726 | return err; | |
2727 | } | |
2728 | ||
2729 | ||
2730 | #endif /* CONFIG_PCI_MSI */ | |
d1a890fa SB |
2731 | |
2732 | static void | |
2733 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2734 | { | |
2735 | u32 cfg; | |
2736 | ||
2737 | /* intr settings */ | |
83d0feff | 2738 | spin_lock(&adapter->cmd_lock); |
d1a890fa SB |
2739 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2740 | VMXNET3_CMD_GET_CONF_INTR); | |
2741 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2742 | spin_unlock(&adapter->cmd_lock); |
d1a890fa SB |
2743 | adapter->intr.type = cfg & 0x3; |
2744 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2745 | ||
2746 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
0bdc0d70 SB |
2747 | adapter->intr.type = VMXNET3_IT_MSIX; |
2748 | } | |
d1a890fa | 2749 | |
8f7e524c | 2750 | #ifdef CONFIG_PCI_MSI |
0bdc0d70 | 2751 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
2752 | int vector, err = 0; |
2753 | ||
2754 | adapter->intr.num_intrs = (adapter->share_intr == | |
2755 | VMXNET3_INTR_TXSHARE) ? 1 : | |
2756 | adapter->num_tx_queues; | |
2757 | adapter->intr.num_intrs += (adapter->share_intr == | |
2758 | VMXNET3_INTR_BUDDYSHARE) ? 0 : | |
2759 | adapter->num_rx_queues; | |
2760 | adapter->intr.num_intrs += 1; /* for link event */ | |
2761 | ||
2762 | adapter->intr.num_intrs = (adapter->intr.num_intrs > | |
2763 | VMXNET3_LINUX_MIN_MSIX_VECT | |
2764 | ? adapter->intr.num_intrs : | |
2765 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
2766 | ||
2767 | for (vector = 0; vector < adapter->intr.num_intrs; vector++) | |
2768 | adapter->intr.msix_entries[vector].entry = vector; | |
2769 | ||
2770 | err = vmxnet3_acquire_msix_vectors(adapter, | |
2771 | adapter->intr.num_intrs); | |
2772 | /* If we cannot allocate one MSIx vector per queue | |
2773 | * then limit the number of rx queues to 1 | |
2774 | */ | |
2775 | if (err == VMXNET3_LINUX_MIN_MSIX_VECT) { | |
2776 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE | |
7e96fbf2 | 2777 | || adapter->num_rx_queues != 1) { |
09c5088e SB |
2778 | adapter->share_intr = VMXNET3_INTR_TXSHARE; |
2779 | printk(KERN_ERR "Number of rx queues : 1\n"); | |
2780 | adapter->num_rx_queues = 1; | |
2781 | adapter->intr.num_intrs = | |
2782 | VMXNET3_LINUX_MIN_MSIX_VECT; | |
2783 | } | |
d1a890fa SB |
2784 | return; |
2785 | } | |
09c5088e SB |
2786 | if (!err) |
2787 | return; | |
2788 | ||
2789 | /* If we cannot allocate MSIx vectors use only one rx queue */ | |
2790 | printk(KERN_INFO "Failed to enable MSI-X for %s, error %d." | |
2791 | "#rx queues : 1, try MSI\n", adapter->netdev->name, err); | |
2792 | ||
0bdc0d70 SB |
2793 | adapter->intr.type = VMXNET3_IT_MSI; |
2794 | } | |
d1a890fa | 2795 | |
0bdc0d70 SB |
2796 | if (adapter->intr.type == VMXNET3_IT_MSI) { |
2797 | int err; | |
d1a890fa SB |
2798 | err = pci_enable_msi(adapter->pdev); |
2799 | if (!err) { | |
09c5088e | 2800 | adapter->num_rx_queues = 1; |
d1a890fa | 2801 | adapter->intr.num_intrs = 1; |
d1a890fa SB |
2802 | return; |
2803 | } | |
2804 | } | |
0bdc0d70 | 2805 | #endif /* CONFIG_PCI_MSI */ |
d1a890fa | 2806 | |
09c5088e SB |
2807 | adapter->num_rx_queues = 1; |
2808 | printk(KERN_INFO "Using INTx interrupt, #Rx queues: 1.\n"); | |
d1a890fa SB |
2809 | adapter->intr.type = VMXNET3_IT_INTX; |
2810 | ||
2811 | /* INT-X related setting */ | |
2812 | adapter->intr.num_intrs = 1; | |
2813 | } | |
2814 | ||
2815 | ||
2816 | static void | |
2817 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
2818 | { | |
2819 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
2820 | pci_disable_msix(adapter->pdev); | |
2821 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
2822 | pci_disable_msi(adapter->pdev); | |
2823 | else | |
2824 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
2825 | } | |
2826 | ||
2827 | ||
2828 | static void | |
2829 | vmxnet3_tx_timeout(struct net_device *netdev) | |
2830 | { | |
2831 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2832 | adapter->tx_timeout_count++; | |
2833 | ||
2834 | printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name); | |
2835 | schedule_work(&adapter->work); | |
09c5088e | 2836 | netif_wake_queue(adapter->netdev); |
d1a890fa SB |
2837 | } |
2838 | ||
2839 | ||
2840 | static void | |
2841 | vmxnet3_reset_work(struct work_struct *data) | |
2842 | { | |
2843 | struct vmxnet3_adapter *adapter; | |
2844 | ||
2845 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
2846 | ||
2847 | /* if another thread is resetting the device, no need to proceed */ | |
2848 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2849 | return; | |
2850 | ||
2851 | /* if the device is closed, we must leave it alone */ | |
d9a5f210 | 2852 | rtnl_lock(); |
d1a890fa SB |
2853 | if (netif_running(adapter->netdev)) { |
2854 | printk(KERN_INFO "%s: resetting\n", adapter->netdev->name); | |
2855 | vmxnet3_quiesce_dev(adapter); | |
2856 | vmxnet3_reset_dev(adapter); | |
2857 | vmxnet3_activate_dev(adapter); | |
2858 | } else { | |
2859 | printk(KERN_INFO "%s: already closed\n", adapter->netdev->name); | |
2860 | } | |
d9a5f210 | 2861 | rtnl_unlock(); |
d1a890fa SB |
2862 | |
2863 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2864 | } | |
2865 | ||
2866 | ||
2867 | static int __devinit | |
2868 | vmxnet3_probe_device(struct pci_dev *pdev, | |
2869 | const struct pci_device_id *id) | |
2870 | { | |
2871 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
2872 | .ndo_open = vmxnet3_open, | |
2873 | .ndo_stop = vmxnet3_close, | |
2874 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
2875 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
2876 | .ndo_change_mtu = vmxnet3_change_mtu, | |
2877 | .ndo_get_stats = vmxnet3_get_stats, | |
2878 | .ndo_tx_timeout = vmxnet3_tx_timeout, | |
2879 | .ndo_set_multicast_list = vmxnet3_set_mc, | |
2880 | .ndo_vlan_rx_register = vmxnet3_vlan_rx_register, | |
2881 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, | |
2882 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
2883 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2884 | .ndo_poll_controller = vmxnet3_netpoll, | |
2885 | #endif | |
2886 | }; | |
2887 | int err; | |
2888 | bool dma64 = false; /* stupid gcc */ | |
2889 | u32 ver; | |
2890 | struct net_device *netdev; | |
2891 | struct vmxnet3_adapter *adapter; | |
2892 | u8 mac[ETH_ALEN]; | |
09c5088e SB |
2893 | int size; |
2894 | int num_tx_queues; | |
2895 | int num_rx_queues; | |
2896 | ||
2897 | #ifdef VMXNET3_RSS | |
2898 | if (enable_mq) | |
2899 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
2900 | (int)num_online_cpus()); | |
2901 | else | |
2902 | #endif | |
2903 | num_rx_queues = 1; | |
2904 | ||
2905 | if (enable_mq) | |
2906 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
2907 | (int)num_online_cpus()); | |
2908 | else | |
2909 | num_tx_queues = 1; | |
2910 | ||
2911 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), | |
2912 | max(num_tx_queues, num_rx_queues)); | |
2913 | printk(KERN_INFO "# of Tx queues : %d, # of Rx queues : %d\n", | |
2914 | num_tx_queues, num_rx_queues); | |
d1a890fa | 2915 | |
d1a890fa SB |
2916 | if (!netdev) { |
2917 | printk(KERN_ERR "Failed to alloc ethernet device for adapter " | |
2918 | "%s\n", pci_name(pdev)); | |
2919 | return -ENOMEM; | |
2920 | } | |
2921 | ||
2922 | pci_set_drvdata(pdev, netdev); | |
2923 | adapter = netdev_priv(netdev); | |
2924 | adapter->netdev = netdev; | |
2925 | adapter->pdev = pdev; | |
2926 | ||
83d0feff | 2927 | spin_lock_init(&adapter->cmd_lock); |
d1a890fa SB |
2928 | adapter->shared = pci_alloc_consistent(adapter->pdev, |
2929 | sizeof(struct Vmxnet3_DriverShared), | |
2930 | &adapter->shared_pa); | |
2931 | if (!adapter->shared) { | |
2932 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2933 | pci_name(pdev)); | |
2934 | err = -ENOMEM; | |
2935 | goto err_alloc_shared; | |
2936 | } | |
2937 | ||
09c5088e SB |
2938 | adapter->num_rx_queues = num_rx_queues; |
2939 | adapter->num_tx_queues = num_tx_queues; | |
2940 | ||
2941 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
2942 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
2943 | adapter->tqd_start = pci_alloc_consistent(adapter->pdev, size, | |
d1a890fa SB |
2944 | &adapter->queue_desc_pa); |
2945 | ||
2946 | if (!adapter->tqd_start) { | |
2947 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2948 | pci_name(pdev)); | |
2949 | err = -ENOMEM; | |
2950 | goto err_alloc_queue_desc; | |
2951 | } | |
09c5088e SB |
2952 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + |
2953 | adapter->num_tx_queues); | |
d1a890fa SB |
2954 | |
2955 | adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL); | |
2956 | if (adapter->pm_conf == NULL) { | |
2957 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2958 | pci_name(pdev)); | |
2959 | err = -ENOMEM; | |
2960 | goto err_alloc_pm; | |
2961 | } | |
2962 | ||
09c5088e SB |
2963 | #ifdef VMXNET3_RSS |
2964 | ||
2965 | adapter->rss_conf = kmalloc(sizeof(struct UPT1_RSSConf), GFP_KERNEL); | |
2966 | if (adapter->rss_conf == NULL) { | |
2967 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
2968 | pci_name(pdev)); | |
2969 | err = -ENOMEM; | |
2970 | goto err_alloc_rss; | |
2971 | } | |
2972 | #endif /* VMXNET3_RSS */ | |
2973 | ||
d1a890fa SB |
2974 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); |
2975 | if (err < 0) | |
2976 | goto err_alloc_pci; | |
2977 | ||
2978 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
2979 | if (ver & 1) { | |
2980 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
2981 | } else { | |
2982 | printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter" | |
2983 | " %s\n", ver, pci_name(pdev)); | |
2984 | err = -EBUSY; | |
2985 | goto err_ver; | |
2986 | } | |
2987 | ||
2988 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
2989 | if (ver & 1) { | |
2990 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
2991 | } else { | |
2992 | printk(KERN_ERR "Incompatible upt version (0x%x) for " | |
2993 | "adapter %s\n", ver, pci_name(pdev)); | |
2994 | err = -EBUSY; | |
2995 | goto err_ver; | |
2996 | } | |
2997 | ||
2998 | vmxnet3_declare_features(adapter, dma64); | |
2999 | ||
3000 | adapter->dev_number = atomic_read(&devices_found); | |
09c5088e SB |
3001 | |
3002 | adapter->share_intr = irq_share_mode; | |
3003 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE && | |
3004 | adapter->num_tx_queues != adapter->num_rx_queues) | |
3005 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; | |
3006 | ||
d1a890fa SB |
3007 | vmxnet3_alloc_intr_resources(adapter); |
3008 | ||
09c5088e SB |
3009 | #ifdef VMXNET3_RSS |
3010 | if (adapter->num_rx_queues > 1 && | |
3011 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3012 | adapter->rss = true; | |
3013 | printk(KERN_INFO "RSS is enabled.\n"); | |
3014 | } else { | |
3015 | adapter->rss = false; | |
3016 | } | |
3017 | #endif | |
3018 | ||
d1a890fa SB |
3019 | vmxnet3_read_mac_addr(adapter, mac); |
3020 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3021 | ||
3022 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
d1a890fa | 3023 | vmxnet3_set_ethtool_ops(netdev); |
09c5088e | 3024 | netdev->watchdog_timeo = 5 * HZ; |
d1a890fa SB |
3025 | |
3026 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
3027 | ||
09c5088e SB |
3028 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
3029 | int i; | |
3030 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3031 | netif_napi_add(adapter->netdev, | |
3032 | &adapter->rx_queue[i].napi, | |
3033 | vmxnet3_poll_rx_only, 64); | |
3034 | } | |
3035 | } else { | |
3036 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3037 | vmxnet3_poll, 64); | |
3038 | } | |
3039 | ||
3040 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3041 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3042 | ||
d1a890fa SB |
3043 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3044 | err = register_netdev(netdev); | |
3045 | ||
3046 | if (err) { | |
3047 | printk(KERN_ERR "Failed to register adapter %s\n", | |
3048 | pci_name(pdev)); | |
3049 | goto err_register; | |
3050 | } | |
3051 | ||
3052 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
4a1745fc | 3053 | vmxnet3_check_link(adapter, false); |
d1a890fa SB |
3054 | atomic_inc(&devices_found); |
3055 | return 0; | |
3056 | ||
3057 | err_register: | |
3058 | vmxnet3_free_intr_resources(adapter); | |
3059 | err_ver: | |
3060 | vmxnet3_free_pci_resources(adapter); | |
3061 | err_alloc_pci: | |
09c5088e SB |
3062 | #ifdef VMXNET3_RSS |
3063 | kfree(adapter->rss_conf); | |
3064 | err_alloc_rss: | |
3065 | #endif | |
d1a890fa SB |
3066 | kfree(adapter->pm_conf); |
3067 | err_alloc_pm: | |
09c5088e SB |
3068 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, |
3069 | adapter->queue_desc_pa); | |
d1a890fa SB |
3070 | err_alloc_queue_desc: |
3071 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
3072 | adapter->shared, adapter->shared_pa); | |
3073 | err_alloc_shared: | |
3074 | pci_set_drvdata(pdev, NULL); | |
3075 | free_netdev(netdev); | |
3076 | return err; | |
3077 | } | |
3078 | ||
3079 | ||
3080 | static void __devexit | |
3081 | vmxnet3_remove_device(struct pci_dev *pdev) | |
3082 | { | |
3083 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3084 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
09c5088e SB |
3085 | int size = 0; |
3086 | int num_rx_queues; | |
3087 | ||
3088 | #ifdef VMXNET3_RSS | |
3089 | if (enable_mq) | |
3090 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3091 | (int)num_online_cpus()); | |
3092 | else | |
3093 | #endif | |
3094 | num_rx_queues = 1; | |
d1a890fa | 3095 | |
23f333a2 | 3096 | cancel_work_sync(&adapter->work); |
d1a890fa SB |
3097 | |
3098 | unregister_netdev(netdev); | |
3099 | ||
3100 | vmxnet3_free_intr_resources(adapter); | |
3101 | vmxnet3_free_pci_resources(adapter); | |
09c5088e SB |
3102 | #ifdef VMXNET3_RSS |
3103 | kfree(adapter->rss_conf); | |
3104 | #endif | |
d1a890fa | 3105 | kfree(adapter->pm_conf); |
09c5088e SB |
3106 | |
3107 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3108 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
3109 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, | |
3110 | adapter->queue_desc_pa); | |
d1a890fa SB |
3111 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), |
3112 | adapter->shared, adapter->shared_pa); | |
3113 | free_netdev(netdev); | |
3114 | } | |
3115 | ||
3116 | ||
3117 | #ifdef CONFIG_PM | |
3118 | ||
3119 | static int | |
3120 | vmxnet3_suspend(struct device *device) | |
3121 | { | |
3122 | struct pci_dev *pdev = to_pci_dev(device); | |
3123 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3124 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3125 | struct Vmxnet3_PMConf *pmConf; | |
3126 | struct ethhdr *ehdr; | |
3127 | struct arphdr *ahdr; | |
3128 | u8 *arpreq; | |
3129 | struct in_device *in_dev; | |
3130 | struct in_ifaddr *ifa; | |
83d0feff | 3131 | unsigned long flags; |
d1a890fa SB |
3132 | int i = 0; |
3133 | ||
3134 | if (!netif_running(netdev)) | |
3135 | return 0; | |
3136 | ||
51956cd6 SB |
3137 | for (i = 0; i < adapter->num_rx_queues; i++) |
3138 | napi_disable(&adapter->rx_queue[i].napi); | |
3139 | ||
d1a890fa SB |
3140 | vmxnet3_disable_all_intrs(adapter); |
3141 | vmxnet3_free_irqs(adapter); | |
3142 | vmxnet3_free_intr_resources(adapter); | |
3143 | ||
3144 | netif_device_detach(netdev); | |
09c5088e | 3145 | netif_tx_stop_all_queues(netdev); |
d1a890fa SB |
3146 | |
3147 | /* Create wake-up filters. */ | |
3148 | pmConf = adapter->pm_conf; | |
3149 | memset(pmConf, 0, sizeof(*pmConf)); | |
3150 | ||
3151 | if (adapter->wol & WAKE_UCAST) { | |
3152 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3153 | pmConf->filters[i].maskSize = 1; | |
3154 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3155 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3156 | ||
3843e515 | 3157 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3158 | i++; |
3159 | } | |
3160 | ||
3161 | if (adapter->wol & WAKE_ARP) { | |
3162 | in_dev = in_dev_get(netdev); | |
3163 | if (!in_dev) | |
3164 | goto skip_arp; | |
3165 | ||
3166 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
3167 | if (!ifa) | |
3168 | goto skip_arp; | |
3169 | ||
3170 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3171 | sizeof(struct arphdr) + /* ARP header */ | |
3172 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3173 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3174 | pmConf->filters[i].maskSize = | |
3175 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3176 | ||
3177 | /* ETH_P_ARP in Ethernet header. */ | |
3178 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3179 | ehdr->h_proto = htons(ETH_P_ARP); | |
3180 | ||
3181 | /* ARPOP_REQUEST in ARP header. */ | |
3182 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3183 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3184 | arpreq = (u8 *)(ahdr + 1); | |
3185 | ||
3186 | /* The Unicast IPv4 address in 'tip' field. */ | |
3187 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
3188 | *(u32 *)arpreq = ifa->ifa_address; | |
3189 | ||
3190 | /* The mask for the relevant bits. */ | |
3191 | pmConf->filters[i].mask[0] = 0x00; | |
3192 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3193 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3194 | pmConf->filters[i].mask[3] = 0x00; | |
3195 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3196 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
3197 | in_dev_put(in_dev); | |
3198 | ||
3843e515 | 3199 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3200 | i++; |
3201 | } | |
3202 | ||
3203 | skip_arp: | |
3204 | if (adapter->wol & WAKE_MAGIC) | |
3843e515 | 3205 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; |
d1a890fa SB |
3206 | |
3207 | pmConf->numFilters = i; | |
3208 | ||
115924b6 SB |
3209 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3210 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3211 | *pmConf)); | |
3212 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( | |
3213 | pmConf)); | |
d1a890fa | 3214 | |
83d0feff | 3215 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3216 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3217 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3218 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3219 | |
3220 | pci_save_state(pdev); | |
3221 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3222 | adapter->wol); | |
3223 | pci_disable_device(pdev); | |
3224 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3225 | ||
3226 | return 0; | |
3227 | } | |
3228 | ||
3229 | ||
3230 | static int | |
3231 | vmxnet3_resume(struct device *device) | |
3232 | { | |
51956cd6 | 3233 | int err, i = 0; |
83d0feff | 3234 | unsigned long flags; |
d1a890fa SB |
3235 | struct pci_dev *pdev = to_pci_dev(device); |
3236 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3237 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3238 | struct Vmxnet3_PMConf *pmConf; | |
3239 | ||
3240 | if (!netif_running(netdev)) | |
3241 | return 0; | |
3242 | ||
3243 | /* Destroy wake-up filters. */ | |
3244 | pmConf = adapter->pm_conf; | |
3245 | memset(pmConf, 0, sizeof(*pmConf)); | |
3246 | ||
115924b6 SB |
3247 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3248 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3249 | *pmConf)); | |
0561cf3d | 3250 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( |
115924b6 | 3251 | pmConf)); |
d1a890fa SB |
3252 | |
3253 | netif_device_attach(netdev); | |
3254 | pci_set_power_state(pdev, PCI_D0); | |
3255 | pci_restore_state(pdev); | |
3256 | err = pci_enable_device_mem(pdev); | |
3257 | if (err != 0) | |
3258 | return err; | |
3259 | ||
3260 | pci_enable_wake(pdev, PCI_D0, 0); | |
3261 | ||
83d0feff | 3262 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3263 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3264 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3265 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3266 | vmxnet3_alloc_intr_resources(adapter); |
3267 | vmxnet3_request_irqs(adapter); | |
51956cd6 SB |
3268 | for (i = 0; i < adapter->num_rx_queues; i++) |
3269 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
3270 | vmxnet3_enable_all_intrs(adapter); |
3271 | ||
3272 | return 0; | |
3273 | } | |
3274 | ||
47145210 | 3275 | static const struct dev_pm_ops vmxnet3_pm_ops = { |
d1a890fa SB |
3276 | .suspend = vmxnet3_suspend, |
3277 | .resume = vmxnet3_resume, | |
3278 | }; | |
3279 | #endif | |
3280 | ||
3281 | static struct pci_driver vmxnet3_driver = { | |
3282 | .name = vmxnet3_driver_name, | |
3283 | .id_table = vmxnet3_pciid_table, | |
3284 | .probe = vmxnet3_probe_device, | |
3285 | .remove = __devexit_p(vmxnet3_remove_device), | |
3286 | #ifdef CONFIG_PM | |
3287 | .driver.pm = &vmxnet3_pm_ops, | |
3288 | #endif | |
3289 | }; | |
3290 | ||
3291 | ||
3292 | static int __init | |
3293 | vmxnet3_init_module(void) | |
3294 | { | |
3295 | printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC, | |
3296 | VMXNET3_DRIVER_VERSION_REPORT); | |
3297 | return pci_register_driver(&vmxnet3_driver); | |
3298 | } | |
3299 | ||
3300 | module_init(vmxnet3_init_module); | |
3301 | ||
3302 | ||
3303 | static void | |
3304 | vmxnet3_exit_module(void) | |
3305 | { | |
3306 | pci_unregister_driver(&vmxnet3_driver); | |
3307 | } | |
3308 | ||
3309 | module_exit(vmxnet3_exit_module); | |
3310 | ||
3311 | MODULE_AUTHOR("VMware, Inc."); | |
3312 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3313 | MODULE_LICENSE("GPL v2"); | |
3314 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |