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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 | ||
9d9779e7 | 27 | #include <linux/module.h> |
b038b040 SR |
28 | #include <net/ip6_checksum.h> |
29 | ||
d1a890fa SB |
30 | #include "vmxnet3_int.h" |
31 | ||
32 | char vmxnet3_driver_name[] = "vmxnet3"; | |
33 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
34 | ||
d1a890fa SB |
35 | /* |
36 | * PCI Device ID Table | |
37 | * Last entry must be all 0s | |
38 | */ | |
a3aa1884 | 39 | static DEFINE_PCI_DEVICE_TABLE(vmxnet3_pciid_table) = { |
d1a890fa SB |
40 | {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)}, |
41 | {0} | |
42 | }; | |
43 | ||
44 | MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table); | |
45 | ||
46 | static atomic_t devices_found; | |
47 | ||
09c5088e SB |
48 | #define VMXNET3_MAX_DEVICES 10 |
49 | static int enable_mq = 1; | |
50 | static int irq_share_mode; | |
d1a890fa | 51 | |
f9f25026 SB |
52 | static void |
53 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac); | |
54 | ||
d1a890fa SB |
55 | /* |
56 | * Enable/Disable the given intr | |
57 | */ | |
58 | static void | |
59 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
60 | { | |
61 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
62 | } | |
63 | ||
64 | ||
65 | static void | |
66 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
67 | { | |
68 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
69 | } | |
70 | ||
71 | ||
72 | /* | |
73 | * Enable/Disable all intrs used by the device | |
74 | */ | |
75 | static void | |
76 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
77 | { | |
78 | int i; | |
79 | ||
80 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
81 | vmxnet3_enable_intr(adapter, i); | |
6929fe8a RZ |
82 | adapter->shared->devRead.intrConf.intrCtrl &= |
83 | cpu_to_le32(~VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
84 | } |
85 | ||
86 | ||
87 | static void | |
88 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
89 | { | |
90 | int i; | |
91 | ||
6929fe8a RZ |
92 | adapter->shared->devRead.intrConf.intrCtrl |= |
93 | cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
94 | for (i = 0; i < adapter->intr.num_intrs; i++) |
95 | vmxnet3_disable_intr(adapter, i); | |
96 | } | |
97 | ||
98 | ||
99 | static void | |
100 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
101 | { | |
102 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
103 | } | |
104 | ||
105 | ||
106 | static bool | |
107 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
108 | { | |
09c5088e | 109 | return tq->stopped; |
d1a890fa SB |
110 | } |
111 | ||
112 | ||
113 | static void | |
114 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
115 | { | |
116 | tq->stopped = false; | |
09c5088e | 117 | netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue); |
d1a890fa SB |
118 | } |
119 | ||
120 | ||
121 | static void | |
122 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
123 | { | |
124 | tq->stopped = false; | |
09c5088e | 125 | netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
126 | } |
127 | ||
128 | ||
129 | static void | |
130 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
131 | { | |
132 | tq->stopped = true; | |
133 | tq->num_stop++; | |
09c5088e | 134 | netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
135 | } |
136 | ||
137 | ||
138 | /* | |
139 | * Check the link state. This may start or stop the tx queue. | |
140 | */ | |
141 | static void | |
4a1745fc | 142 | vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue) |
d1a890fa SB |
143 | { |
144 | u32 ret; | |
09c5088e | 145 | int i; |
83d0feff | 146 | unsigned long flags; |
d1a890fa | 147 | |
83d0feff | 148 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
149 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); |
150 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff SB |
151 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
152 | ||
d1a890fa SB |
153 | adapter->link_speed = ret >> 16; |
154 | if (ret & 1) { /* Link is up. */ | |
155 | printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n", | |
156 | adapter->netdev->name, adapter->link_speed); | |
157 | if (!netif_carrier_ok(adapter->netdev)) | |
158 | netif_carrier_on(adapter->netdev); | |
159 | ||
09c5088e SB |
160 | if (affectTxQueue) { |
161 | for (i = 0; i < adapter->num_tx_queues; i++) | |
162 | vmxnet3_tq_start(&adapter->tx_queue[i], | |
163 | adapter); | |
164 | } | |
d1a890fa SB |
165 | } else { |
166 | printk(KERN_INFO "%s: NIC Link is Down\n", | |
167 | adapter->netdev->name); | |
168 | if (netif_carrier_ok(adapter->netdev)) | |
169 | netif_carrier_off(adapter->netdev); | |
170 | ||
09c5088e SB |
171 | if (affectTxQueue) { |
172 | for (i = 0; i < adapter->num_tx_queues; i++) | |
173 | vmxnet3_tq_stop(&adapter->tx_queue[i], adapter); | |
174 | } | |
d1a890fa SB |
175 | } |
176 | } | |
177 | ||
d1a890fa SB |
178 | static void |
179 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
180 | { | |
09c5088e | 181 | int i; |
e328d410 | 182 | unsigned long flags; |
115924b6 | 183 | u32 events = le32_to_cpu(adapter->shared->ecr); |
d1a890fa SB |
184 | if (!events) |
185 | return; | |
186 | ||
187 | vmxnet3_ack_events(adapter, events); | |
188 | ||
189 | /* Check if link state has changed */ | |
190 | if (events & VMXNET3_ECR_LINK) | |
4a1745fc | 191 | vmxnet3_check_link(adapter, true); |
d1a890fa SB |
192 | |
193 | /* Check if there is an error on xmit/recv queues */ | |
194 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
e328d410 | 195 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
196 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
197 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
e328d410 | 198 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 199 | |
09c5088e SB |
200 | for (i = 0; i < adapter->num_tx_queues; i++) |
201 | if (adapter->tqd_start[i].status.stopped) | |
202 | dev_err(&adapter->netdev->dev, | |
203 | "%s: tq[%d] error 0x%x\n", | |
204 | adapter->netdev->name, i, le32_to_cpu( | |
205 | adapter->tqd_start[i].status.error)); | |
206 | for (i = 0; i < adapter->num_rx_queues; i++) | |
207 | if (adapter->rqd_start[i].status.stopped) | |
208 | dev_err(&adapter->netdev->dev, | |
209 | "%s: rq[%d] error 0x%x\n", | |
210 | adapter->netdev->name, i, | |
211 | adapter->rqd_start[i].status.error); | |
d1a890fa SB |
212 | |
213 | schedule_work(&adapter->work); | |
214 | } | |
215 | } | |
216 | ||
115924b6 SB |
217 | #ifdef __BIG_ENDIAN_BITFIELD |
218 | /* | |
219 | * The device expects the bitfields in shared structures to be written in | |
220 | * little endian. When CPU is big endian, the following routines are used to | |
221 | * correctly read and write into ABI. | |
222 | * The general technique used here is : double word bitfields are defined in | |
223 | * opposite order for big endian architecture. Then before reading them in | |
224 | * driver the complete double word is translated using le32_to_cpu. Similarly | |
225 | * After the driver writes into bitfields, cpu_to_le32 is used to translate the | |
226 | * double words into required format. | |
227 | * In order to avoid touching bits in shared structure more than once, temporary | |
228 | * descriptors are used. These are passed as srcDesc to following functions. | |
229 | */ | |
230 | static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc, | |
231 | struct Vmxnet3_RxDesc *dstDesc) | |
232 | { | |
233 | u32 *src = (u32 *)srcDesc + 2; | |
234 | u32 *dst = (u32 *)dstDesc + 2; | |
235 | dstDesc->addr = le64_to_cpu(srcDesc->addr); | |
236 | *dst = le32_to_cpu(*src); | |
237 | dstDesc->ext1 = le32_to_cpu(srcDesc->ext1); | |
238 | } | |
239 | ||
240 | static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc, | |
241 | struct Vmxnet3_TxDesc *dstDesc) | |
242 | { | |
243 | int i; | |
244 | u32 *src = (u32 *)(srcDesc + 1); | |
245 | u32 *dst = (u32 *)(dstDesc + 1); | |
246 | ||
247 | /* Working backwards so that the gen bit is set at the end. */ | |
248 | for (i = 2; i > 0; i--) { | |
249 | src--; | |
250 | dst--; | |
251 | *dst = cpu_to_le32(*src); | |
252 | } | |
253 | } | |
254 | ||
255 | ||
256 | static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc, | |
257 | struct Vmxnet3_RxCompDesc *dstDesc) | |
258 | { | |
259 | int i = 0; | |
260 | u32 *src = (u32 *)srcDesc; | |
261 | u32 *dst = (u32 *)dstDesc; | |
262 | for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) { | |
263 | *dst = le32_to_cpu(*src); | |
264 | src++; | |
265 | dst++; | |
266 | } | |
267 | } | |
268 | ||
269 | ||
270 | /* Used to read bitfield values from double words. */ | |
271 | static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size) | |
272 | { | |
273 | u32 temp = le32_to_cpu(*bitfield); | |
274 | u32 mask = ((1 << size) - 1) << pos; | |
275 | temp &= mask; | |
276 | temp >>= pos; | |
277 | return temp; | |
278 | } | |
279 | ||
280 | ||
281 | ||
282 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
283 | ||
284 | #ifdef __BIG_ENDIAN_BITFIELD | |
285 | ||
286 | # define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \ | |
287 | txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \ | |
288 | VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE) | |
289 | # define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \ | |
290 | txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \ | |
291 | VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE) | |
292 | # define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \ | |
293 | VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \ | |
294 | VMXNET3_TCD_GEN_SIZE) | |
295 | # define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \ | |
296 | VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE) | |
297 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \ | |
298 | (dstrcd) = (tmp); \ | |
299 | vmxnet3_RxCompToCPU((rcd), (tmp)); \ | |
300 | } while (0) | |
301 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \ | |
302 | (dstrxd) = (tmp); \ | |
303 | vmxnet3_RxDescToCPU((rxd), (tmp)); \ | |
304 | } while (0) | |
305 | ||
306 | #else | |
307 | ||
308 | # define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen) | |
309 | # define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop) | |
310 | # define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen) | |
311 | # define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx) | |
312 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd) | |
313 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd) | |
314 | ||
315 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
316 | ||
d1a890fa SB |
317 | |
318 | static void | |
319 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
320 | struct pci_dev *pdev) | |
321 | { | |
322 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
323 | pci_unmap_single(pdev, tbi->dma_addr, tbi->len, | |
324 | PCI_DMA_TODEVICE); | |
325 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
326 | pci_unmap_page(pdev, tbi->dma_addr, tbi->len, | |
327 | PCI_DMA_TODEVICE); | |
328 | else | |
329 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
330 | ||
331 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
332 | } | |
333 | ||
334 | ||
335 | static int | |
336 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
337 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
338 | { | |
339 | struct sk_buff *skb; | |
340 | int entries = 0; | |
341 | ||
342 | /* no out of order completion */ | |
343 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
115924b6 | 344 | BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1); |
d1a890fa SB |
345 | |
346 | skb = tq->buf_info[eop_idx].skb; | |
347 | BUG_ON(skb == NULL); | |
348 | tq->buf_info[eop_idx].skb = NULL; | |
349 | ||
350 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
351 | ||
352 | while (tq->tx_ring.next2comp != eop_idx) { | |
353 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
354 | pdev); | |
355 | ||
356 | /* update next2comp w/o tx_lock. Since we are marking more, | |
357 | * instead of less, tx ring entries avail, the worst case is | |
358 | * that the tx routine incorrectly re-queues a pkt due to | |
359 | * insufficient tx ring entries. | |
360 | */ | |
361 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
362 | entries++; | |
363 | } | |
364 | ||
365 | dev_kfree_skb_any(skb); | |
366 | return entries; | |
367 | } | |
368 | ||
369 | ||
370 | static int | |
371 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
372 | struct vmxnet3_adapter *adapter) | |
373 | { | |
374 | int completed = 0; | |
375 | union Vmxnet3_GenericDesc *gdesc; | |
376 | ||
377 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
115924b6 SB |
378 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { |
379 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( | |
380 | &gdesc->tcd), tq, adapter->pdev, | |
381 | adapter); | |
d1a890fa SB |
382 | |
383 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
384 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
385 | } | |
386 | ||
387 | if (completed) { | |
388 | spin_lock(&tq->tx_lock); | |
389 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
390 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
391 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
392 | netif_carrier_ok(adapter->netdev))) { | |
393 | vmxnet3_tq_wake(tq, adapter); | |
394 | } | |
395 | spin_unlock(&tq->tx_lock); | |
396 | } | |
397 | return completed; | |
398 | } | |
399 | ||
400 | ||
401 | static void | |
402 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
403 | struct vmxnet3_adapter *adapter) | |
404 | { | |
405 | int i; | |
406 | ||
407 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
408 | struct vmxnet3_tx_buf_info *tbi; | |
d1a890fa SB |
409 | |
410 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
d1a890fa SB |
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); | |
e404decb | 540 | if (!tq->buf_info) |
d1a890fa | 541 | goto err; |
d1a890fa SB |
542 | |
543 | return 0; | |
544 | ||
545 | err: | |
546 | vmxnet3_tq_destroy(tq, adapter); | |
547 | return -ENOMEM; | |
548 | } | |
549 | ||
09c5088e SB |
550 | static void |
551 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
552 | { | |
553 | int i; | |
554 | ||
555 | for (i = 0; i < adapter->num_tx_queues; i++) | |
556 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
557 | } | |
d1a890fa SB |
558 | |
559 | /* | |
560 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
561 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
562 | * are allocated or allocation fails | |
563 | */ | |
564 | ||
565 | static int | |
566 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
567 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
568 | { | |
569 | int num_allocated = 0; | |
570 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
571 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
572 | u32 val; | |
573 | ||
5318d809 | 574 | while (num_allocated <= num_to_alloc) { |
d1a890fa SB |
575 | struct vmxnet3_rx_buf_info *rbi; |
576 | union Vmxnet3_GenericDesc *gd; | |
577 | ||
578 | rbi = rbi_base + ring->next2fill; | |
579 | gd = ring->base + ring->next2fill; | |
580 | ||
581 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
582 | if (rbi->skb == NULL) { | |
583 | rbi->skb = dev_alloc_skb(rbi->len + | |
584 | NET_IP_ALIGN); | |
585 | if (unlikely(rbi->skb == NULL)) { | |
586 | rq->stats.rx_buf_alloc_failure++; | |
587 | break; | |
588 | } | |
589 | rbi->skb->dev = adapter->netdev; | |
590 | ||
591 | skb_reserve(rbi->skb, NET_IP_ALIGN); | |
592 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
593 | rbi->skb->data, rbi->len, | |
594 | PCI_DMA_FROMDEVICE); | |
595 | } else { | |
596 | /* rx buffer skipped by the device */ | |
597 | } | |
598 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
599 | } else { | |
600 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
601 | rbi->len != PAGE_SIZE); | |
602 | ||
603 | if (rbi->page == NULL) { | |
604 | rbi->page = alloc_page(GFP_ATOMIC); | |
605 | if (unlikely(rbi->page == NULL)) { | |
606 | rq->stats.rx_buf_alloc_failure++; | |
607 | break; | |
608 | } | |
609 | rbi->dma_addr = pci_map_page(adapter->pdev, | |
610 | rbi->page, 0, PAGE_SIZE, | |
611 | PCI_DMA_FROMDEVICE); | |
612 | } else { | |
613 | /* rx buffers skipped by the device */ | |
614 | } | |
615 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
616 | } | |
617 | ||
618 | BUG_ON(rbi->dma_addr == 0); | |
115924b6 | 619 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); |
5318d809 | 620 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) |
115924b6 | 621 | | val | rbi->len); |
d1a890fa | 622 | |
5318d809 SB |
623 | /* Fill the last buffer but dont mark it ready, or else the |
624 | * device will think that the queue is full */ | |
625 | if (num_allocated == num_to_alloc) | |
626 | break; | |
627 | ||
628 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
d1a890fa SB |
629 | num_allocated++; |
630 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
631 | } | |
632 | rq->uncommitted[ring_idx] += num_allocated; | |
633 | ||
f6965582 RD |
634 | dev_dbg(&adapter->netdev->dev, |
635 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp " | |
c3ca881f | 636 | "%u, uncommitted %u\n", num_allocated, ring->next2fill, |
d1a890fa SB |
637 | ring->next2comp, rq->uncommitted[ring_idx]); |
638 | ||
639 | /* so that the device can distinguish a full ring and an empty ring */ | |
640 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
641 | ||
642 | return num_allocated; | |
643 | } | |
644 | ||
645 | ||
646 | static void | |
647 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
648 | struct vmxnet3_rx_buf_info *rbi) | |
649 | { | |
650 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
651 | skb_shinfo(skb)->nr_frags; | |
652 | ||
653 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
654 | ||
0e0634d2 | 655 | __skb_frag_set_page(frag, rbi->page); |
d1a890fa | 656 | frag->page_offset = 0; |
9e903e08 ED |
657 | skb_frag_size_set(frag, rcd->len); |
658 | skb->data_len += rcd->len; | |
5e6c355c | 659 | skb->truesize += PAGE_SIZE; |
d1a890fa SB |
660 | skb_shinfo(skb)->nr_frags++; |
661 | } | |
662 | ||
663 | ||
664 | static void | |
665 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
666 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
667 | struct vmxnet3_adapter *adapter) | |
668 | { | |
669 | u32 dw2, len; | |
670 | unsigned long buf_offset; | |
671 | int i; | |
672 | union Vmxnet3_GenericDesc *gdesc; | |
673 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
674 | ||
675 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
676 | ||
677 | /* use the previous gen bit for the SOP desc */ | |
678 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
679 | ||
680 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
681 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
682 | ||
683 | /* no need to map the buffer if headers are copied */ | |
684 | if (ctx->copy_size) { | |
115924b6 | 685 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + |
d1a890fa | 686 | tq->tx_ring.next2fill * |
115924b6 SB |
687 | sizeof(struct Vmxnet3_TxDataDesc)); |
688 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); | |
d1a890fa SB |
689 | ctx->sop_txd->dword[3] = 0; |
690 | ||
691 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
692 | tbi->map_type = VMXNET3_MAP_NONE; | |
693 | ||
f6965582 RD |
694 | dev_dbg(&adapter->netdev->dev, |
695 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
115924b6 SB |
696 | tq->tx_ring.next2fill, |
697 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
d1a890fa SB |
698 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); |
699 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
700 | ||
701 | /* use the right gen for non-SOP desc */ | |
702 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
703 | } | |
704 | ||
705 | /* linear part can use multiple tx desc if it's big */ | |
706 | len = skb_headlen(skb) - ctx->copy_size; | |
707 | buf_offset = ctx->copy_size; | |
708 | while (len) { | |
709 | u32 buf_size; | |
710 | ||
1f4b1612 BD |
711 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { |
712 | buf_size = len; | |
713 | dw2 |= len; | |
714 | } else { | |
715 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
716 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
717 | } | |
d1a890fa SB |
718 | |
719 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
720 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
721 | tbi->dma_addr = pci_map_single(adapter->pdev, | |
722 | skb->data + buf_offset, buf_size, | |
723 | PCI_DMA_TODEVICE); | |
724 | ||
1f4b1612 | 725 | tbi->len = buf_size; |
d1a890fa SB |
726 | |
727 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
728 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
729 | ||
115924b6 | 730 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
1f4b1612 | 731 | gdesc->dword[2] = cpu_to_le32(dw2); |
d1a890fa SB |
732 | gdesc->dword[3] = 0; |
733 | ||
f6965582 RD |
734 | dev_dbg(&adapter->netdev->dev, |
735 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", | |
115924b6 SB |
736 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
737 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
738 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
739 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
740 | ||
741 | len -= buf_size; | |
742 | buf_offset += buf_size; | |
743 | } | |
744 | ||
745 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 746 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; |
a4d7e485 | 747 | u32 buf_size; |
d1a890fa | 748 | |
a4d7e485 ED |
749 | buf_offset = 0; |
750 | len = skb_frag_size(frag); | |
751 | while (len) { | |
752 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
753 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
754 | buf_size = len; | |
755 | dw2 |= len; | |
756 | } else { | |
757 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
758 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
759 | } | |
760 | tbi->map_type = VMXNET3_MAP_PAGE; | |
761 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
762 | buf_offset, buf_size, | |
763 | DMA_TO_DEVICE); | |
d1a890fa | 764 | |
a4d7e485 | 765 | tbi->len = buf_size; |
d1a890fa | 766 | |
a4d7e485 ED |
767 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; |
768 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
d1a890fa | 769 | |
a4d7e485 ED |
770 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
771 | gdesc->dword[2] = cpu_to_le32(dw2); | |
772 | gdesc->dword[3] = 0; | |
d1a890fa | 773 | |
a4d7e485 ED |
774 | dev_dbg(&adapter->netdev->dev, |
775 | "txd[%u]: 0x%llu %u %u\n", | |
776 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), | |
777 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
778 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
779 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
780 | ||
781 | len -= buf_size; | |
782 | buf_offset += buf_size; | |
783 | } | |
d1a890fa SB |
784 | } |
785 | ||
786 | ctx->eop_txd = gdesc; | |
787 | ||
788 | /* set the last buf_info for the pkt */ | |
789 | tbi->skb = skb; | |
790 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
791 | } | |
792 | ||
793 | ||
09c5088e SB |
794 | /* Init all tx queues */ |
795 | static void | |
796 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
797 | { | |
798 | int i; | |
799 | ||
800 | for (i = 0; i < adapter->num_tx_queues; i++) | |
801 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
802 | } | |
803 | ||
804 | ||
d1a890fa SB |
805 | /* |
806 | * parse and copy relevant protocol headers: | |
807 | * For a tso pkt, relevant headers are L2/3/4 including options | |
808 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
809 | * if it's a TCP/UDP pkt | |
810 | * | |
811 | * Returns: | |
812 | * -1: error happens during parsing | |
813 | * 0: protocol headers parsed, but too big to be copied | |
814 | * 1: protocol headers parsed and copied | |
815 | * | |
816 | * Other effects: | |
817 | * 1. related *ctx fields are updated. | |
818 | * 2. ctx->copy_size is # of bytes copied | |
819 | * 3. the portion copied is guaranteed to be in the linear part | |
820 | * | |
821 | */ | |
822 | static int | |
823 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
824 | struct vmxnet3_tx_ctx *ctx, | |
825 | struct vmxnet3_adapter *adapter) | |
826 | { | |
827 | struct Vmxnet3_TxDataDesc *tdd; | |
828 | ||
0d0b1672 | 829 | if (ctx->mss) { /* TSO */ |
d1a890fa | 830 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); |
8bca5d1e | 831 | ctx->l4_hdr_size = tcp_hdrlen(skb); |
d1a890fa SB |
832 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; |
833 | } else { | |
d1a890fa | 834 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
0d0b1672 | 835 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); |
d1a890fa SB |
836 | |
837 | if (ctx->ipv4) { | |
8bca5d1e ED |
838 | const struct iphdr *iph = ip_hdr(skb); |
839 | ||
39d4a96f | 840 | if (iph->protocol == IPPROTO_TCP) |
8bca5d1e | 841 | ctx->l4_hdr_size = tcp_hdrlen(skb); |
39d4a96f | 842 | else if (iph->protocol == IPPROTO_UDP) |
f6a1ad42 | 843 | ctx->l4_hdr_size = sizeof(struct udphdr); |
39d4a96f | 844 | else |
d1a890fa | 845 | ctx->l4_hdr_size = 0; |
d1a890fa SB |
846 | } else { |
847 | /* for simplicity, don't copy L4 headers */ | |
848 | ctx->l4_hdr_size = 0; | |
849 | } | |
b203262d NH |
850 | ctx->copy_size = min(ctx->eth_ip_hdr_size + |
851 | ctx->l4_hdr_size, skb->len); | |
d1a890fa SB |
852 | } else { |
853 | ctx->eth_ip_hdr_size = 0; | |
854 | ctx->l4_hdr_size = 0; | |
855 | /* copy as much as allowed */ | |
856 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
857 | , skb_headlen(skb)); | |
858 | } | |
859 | ||
860 | /* make sure headers are accessible directly */ | |
861 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
862 | goto err; | |
863 | } | |
864 | ||
865 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
866 | tq->stats.oversized_hdr++; | |
867 | ctx->copy_size = 0; | |
868 | return 0; | |
869 | } | |
870 | ||
871 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
872 | ||
873 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
f6965582 RD |
874 | dev_dbg(&adapter->netdev->dev, |
875 | "copy %u bytes to dataRing[%u]\n", | |
d1a890fa SB |
876 | ctx->copy_size, tq->tx_ring.next2fill); |
877 | return 1; | |
878 | ||
879 | err: | |
880 | return -1; | |
881 | } | |
882 | ||
883 | ||
884 | static void | |
885 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
886 | struct vmxnet3_tx_ctx *ctx) | |
887 | { | |
8bca5d1e ED |
888 | struct tcphdr *tcph = tcp_hdr(skb); |
889 | ||
d1a890fa | 890 | if (ctx->ipv4) { |
8bca5d1e ED |
891 | struct iphdr *iph = ip_hdr(skb); |
892 | ||
d1a890fa SB |
893 | iph->check = 0; |
894 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
895 | IPPROTO_TCP, 0); | |
896 | } else { | |
8bca5d1e ED |
897 | struct ipv6hdr *iph = ipv6_hdr(skb); |
898 | ||
d1a890fa SB |
899 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, |
900 | IPPROTO_TCP, 0); | |
901 | } | |
902 | } | |
903 | ||
a4d7e485 ED |
904 | static int txd_estimate(const struct sk_buff *skb) |
905 | { | |
906 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
907 | int i; | |
908 | ||
909 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
910 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
911 | ||
912 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
913 | } | |
914 | return count; | |
915 | } | |
d1a890fa SB |
916 | |
917 | /* | |
918 | * Transmits a pkt thru a given tq | |
919 | * Returns: | |
920 | * NETDEV_TX_OK: descriptors are setup successfully | |
25985edc | 921 | * NETDEV_TX_OK: error occurred, the pkt is dropped |
d1a890fa SB |
922 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped |
923 | * | |
924 | * Side-effects: | |
925 | * 1. tx ring may be changed | |
926 | * 2. tq stats may be updated accordingly | |
927 | * 3. shared->txNumDeferred may be updated | |
928 | */ | |
929 | ||
930 | static int | |
931 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
932 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
933 | { | |
934 | int ret; | |
935 | u32 count; | |
936 | unsigned long flags; | |
937 | struct vmxnet3_tx_ctx ctx; | |
938 | union Vmxnet3_GenericDesc *gdesc; | |
115924b6 SB |
939 | #ifdef __BIG_ENDIAN_BITFIELD |
940 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
941 | union Vmxnet3_GenericDesc tempTxDesc; | |
942 | #endif | |
d1a890fa | 943 | |
a4d7e485 | 944 | count = txd_estimate(skb); |
d1a890fa | 945 | |
72e85c45 | 946 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); |
d1a890fa SB |
947 | |
948 | ctx.mss = skb_shinfo(skb)->gso_size; | |
949 | if (ctx.mss) { | |
950 | if (skb_header_cloned(skb)) { | |
951 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
952 | GFP_ATOMIC) != 0)) { | |
953 | tq->stats.drop_tso++; | |
954 | goto drop_pkt; | |
955 | } | |
956 | tq->stats.copy_skb_header++; | |
957 | } | |
958 | vmxnet3_prepare_tso(skb, &ctx); | |
959 | } else { | |
960 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
961 | ||
962 | /* non-tso pkts must not use more than | |
963 | * VMXNET3_MAX_TXD_PER_PKT entries | |
964 | */ | |
965 | if (skb_linearize(skb) != 0) { | |
966 | tq->stats.drop_too_many_frags++; | |
967 | goto drop_pkt; | |
968 | } | |
969 | tq->stats.linearized++; | |
970 | ||
971 | /* recalculate the # of descriptors to use */ | |
972 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
973 | } | |
974 | } | |
975 | ||
09c5088e SB |
976 | spin_lock_irqsave(&tq->tx_lock, flags); |
977 | ||
978 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
979 | tq->stats.tx_ring_full++; | |
980 | dev_dbg(&adapter->netdev->dev, | |
981 | "tx queue stopped on %s, next2comp %u" | |
982 | " next2fill %u\n", adapter->netdev->name, | |
983 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
984 | ||
985 | vmxnet3_tq_stop(tq, adapter); | |
986 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
987 | return NETDEV_TX_BUSY; | |
988 | } | |
989 | ||
990 | ||
d1a890fa SB |
991 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); |
992 | if (ret >= 0) { | |
993 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
994 | /* hdrs parsed, check against other limits */ | |
995 | if (ctx.mss) { | |
996 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
997 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
998 | goto hdr_too_big; | |
999 | } | |
1000 | } else { | |
1001 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1002 | if (unlikely(ctx.eth_ip_hdr_size + | |
1003 | skb->csum_offset > | |
1004 | VMXNET3_MAX_CSUM_OFFSET)) { | |
1005 | goto hdr_too_big; | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | } else { | |
1010 | tq->stats.drop_hdr_inspect_err++; | |
f955e141 | 1011 | goto unlock_drop_pkt; |
d1a890fa SB |
1012 | } |
1013 | ||
d1a890fa SB |
1014 | /* fill tx descs related to addr & len */ |
1015 | vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter); | |
1016 | ||
1017 | /* setup the EOP desc */ | |
115924b6 | 1018 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); |
d1a890fa SB |
1019 | |
1020 | /* setup the SOP desc */ | |
115924b6 SB |
1021 | #ifdef __BIG_ENDIAN_BITFIELD |
1022 | gdesc = &tempTxDesc; | |
1023 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1024 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1025 | #else | |
d1a890fa | 1026 | gdesc = ctx.sop_txd; |
115924b6 | 1027 | #endif |
d1a890fa SB |
1028 | if (ctx.mss) { |
1029 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1030 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1031 | gdesc->txd.msscof = ctx.mss; | |
115924b6 SB |
1032 | le32_add_cpu(&tq->shared->txNumDeferred, (skb->len - |
1033 | gdesc->txd.hlen + ctx.mss - 1) / ctx.mss); | |
d1a890fa SB |
1034 | } else { |
1035 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1036 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1037 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1038 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1039 | skb->csum_offset; | |
1040 | } else { | |
1041 | gdesc->txd.om = 0; | |
1042 | gdesc->txd.msscof = 0; | |
1043 | } | |
115924b6 | 1044 | le32_add_cpu(&tq->shared->txNumDeferred, 1); |
d1a890fa SB |
1045 | } |
1046 | ||
1047 | if (vlan_tx_tag_present(skb)) { | |
1048 | gdesc->txd.ti = 1; | |
1049 | gdesc->txd.tci = vlan_tx_tag_get(skb); | |
1050 | } | |
1051 | ||
115924b6 SB |
1052 | /* finally flips the GEN bit of the SOP desc. */ |
1053 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1054 | VMXNET3_TXD_GEN); | |
1055 | #ifdef __BIG_ENDIAN_BITFIELD | |
1056 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1057 | * place. | |
1058 | */ | |
1059 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1060 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1061 | gdesc = ctx.sop_txd; | |
1062 | #endif | |
f6965582 RD |
1063 | dev_dbg(&adapter->netdev->dev, |
1064 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", | |
c2fd03a0 | 1065 | (u32)(ctx.sop_txd - |
115924b6 SB |
1066 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), |
1067 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
d1a890fa SB |
1068 | |
1069 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1070 | ||
115924b6 SB |
1071 | if (le32_to_cpu(tq->shared->txNumDeferred) >= |
1072 | le32_to_cpu(tq->shared->txThreshold)) { | |
d1a890fa | 1073 | tq->shared->txNumDeferred = 0; |
09c5088e SB |
1074 | VMXNET3_WRITE_BAR0_REG(adapter, |
1075 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
d1a890fa SB |
1076 | tq->tx_ring.next2fill); |
1077 | } | |
d1a890fa SB |
1078 | |
1079 | return NETDEV_TX_OK; | |
1080 | ||
1081 | hdr_too_big: | |
1082 | tq->stats.drop_oversized_hdr++; | |
f955e141 DC |
1083 | unlock_drop_pkt: |
1084 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
d1a890fa SB |
1085 | drop_pkt: |
1086 | tq->stats.drop_total++; | |
1087 | dev_kfree_skb(skb); | |
1088 | return NETDEV_TX_OK; | |
1089 | } | |
1090 | ||
1091 | ||
1092 | static netdev_tx_t | |
1093 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1094 | { | |
1095 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1096 | |
96800ee7 | 1097 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); |
1098 | return vmxnet3_tq_xmit(skb, | |
1099 | &adapter->tx_queue[skb->queue_mapping], | |
1100 | adapter, netdev); | |
d1a890fa SB |
1101 | } |
1102 | ||
1103 | ||
1104 | static void | |
1105 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1106 | struct sk_buff *skb, | |
1107 | union Vmxnet3_GenericDesc *gdesc) | |
1108 | { | |
a0d2730c | 1109 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { |
d1a890fa | 1110 | /* typical case: TCP/UDP over IP and both csums are correct */ |
115924b6 | 1111 | if ((le32_to_cpu(gdesc->dword[3]) & VMXNET3_RCD_CSUM_OK) == |
d1a890fa SB |
1112 | VMXNET3_RCD_CSUM_OK) { |
1113 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1114 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1115 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
1116 | BUG_ON(gdesc->rcd.frg); | |
1117 | } else { | |
1118 | if (gdesc->rcd.csum) { | |
1119 | skb->csum = htons(gdesc->rcd.csum); | |
1120 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1121 | } else { | |
bc8acf2c | 1122 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1123 | } |
1124 | } | |
1125 | } else { | |
bc8acf2c | 1126 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1127 | } |
1128 | } | |
1129 | ||
1130 | ||
1131 | static void | |
1132 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1133 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1134 | { | |
1135 | rq->stats.drop_err++; | |
1136 | if (!rcd->fcs) | |
1137 | rq->stats.drop_fcs++; | |
1138 | ||
1139 | rq->stats.drop_total++; | |
1140 | ||
1141 | /* | |
1142 | * We do not unmap and chain the rx buffer to the skb. | |
1143 | * We basically pretend this buffer is not used and will be recycled | |
1144 | * by vmxnet3_rq_alloc_rx_buf() | |
1145 | */ | |
1146 | ||
1147 | /* | |
1148 | * ctx->skb may be NULL if this is the first and the only one | |
1149 | * desc for the pkt | |
1150 | */ | |
1151 | if (ctx->skb) | |
1152 | dev_kfree_skb_irq(ctx->skb); | |
1153 | ||
1154 | ctx->skb = NULL; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | static int | |
1159 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1160 | struct vmxnet3_adapter *adapter, int quota) | |
1161 | { | |
215faf9c JP |
1162 | static const u32 rxprod_reg[2] = { |
1163 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1164 | }; | |
d1a890fa | 1165 | u32 num_rxd = 0; |
5318d809 | 1166 | bool skip_page_frags = false; |
d1a890fa SB |
1167 | struct Vmxnet3_RxCompDesc *rcd; |
1168 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
115924b6 SB |
1169 | #ifdef __BIG_ENDIAN_BITFIELD |
1170 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1171 | struct Vmxnet3_RxCompDesc rxComp; | |
1172 | #endif | |
1173 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1174 | &rxComp); | |
d1a890fa SB |
1175 | while (rcd->gen == rq->comp_ring.gen) { |
1176 | struct vmxnet3_rx_buf_info *rbi; | |
5318d809 SB |
1177 | struct sk_buff *skb, *new_skb = NULL; |
1178 | struct page *new_page = NULL; | |
d1a890fa SB |
1179 | int num_to_alloc; |
1180 | struct Vmxnet3_RxDesc *rxd; | |
1181 | u32 idx, ring_idx; | |
5318d809 | 1182 | struct vmxnet3_cmd_ring *ring = NULL; |
d1a890fa SB |
1183 | if (num_rxd >= quota) { |
1184 | /* we may stop even before we see the EOP desc of | |
1185 | * the current pkt | |
1186 | */ | |
1187 | break; | |
1188 | } | |
1189 | num_rxd++; | |
09c5088e | 1190 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2); |
d1a890fa | 1191 | idx = rcd->rxdIdx; |
09c5088e | 1192 | ring_idx = rcd->rqID < adapter->num_rx_queues ? 0 : 1; |
5318d809 | 1193 | ring = rq->rx_ring + ring_idx; |
115924b6 SB |
1194 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, |
1195 | &rxCmdDesc); | |
d1a890fa SB |
1196 | rbi = rq->buf_info[ring_idx] + idx; |
1197 | ||
115924b6 SB |
1198 | BUG_ON(rxd->addr != rbi->dma_addr || |
1199 | rxd->len != rbi->len); | |
d1a890fa SB |
1200 | |
1201 | if (unlikely(rcd->eop && rcd->err)) { | |
1202 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1203 | goto rcd_done; | |
1204 | } | |
1205 | ||
1206 | if (rcd->sop) { /* first buf of the pkt */ | |
1207 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
1208 | rcd->rqID != rq->qid); | |
1209 | ||
1210 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1211 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1212 | ||
1213 | if (unlikely(rcd->len == 0)) { | |
1214 | /* Pretend the rx buffer is skipped. */ | |
1215 | BUG_ON(!(rcd->sop && rcd->eop)); | |
f6965582 RD |
1216 | dev_dbg(&adapter->netdev->dev, |
1217 | "rxRing[%u][%u] 0 length\n", | |
d1a890fa SB |
1218 | ring_idx, idx); |
1219 | goto rcd_done; | |
1220 | } | |
1221 | ||
5318d809 | 1222 | skip_page_frags = false; |
d1a890fa | 1223 | ctx->skb = rbi->skb; |
5318d809 SB |
1224 | new_skb = dev_alloc_skb(rbi->len + NET_IP_ALIGN); |
1225 | if (new_skb == NULL) { | |
1226 | /* Skb allocation failed, do not handover this | |
1227 | * skb to stack. Reuse it. Drop the existing pkt | |
1228 | */ | |
1229 | rq->stats.rx_buf_alloc_failure++; | |
1230 | ctx->skb = NULL; | |
1231 | rq->stats.drop_total++; | |
1232 | skip_page_frags = true; | |
1233 | goto rcd_done; | |
1234 | } | |
d1a890fa SB |
1235 | |
1236 | pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len, | |
1237 | PCI_DMA_FROMDEVICE); | |
1238 | ||
1239 | skb_put(ctx->skb, rcd->len); | |
5318d809 SB |
1240 | |
1241 | /* Immediate refill */ | |
1242 | new_skb->dev = adapter->netdev; | |
1243 | skb_reserve(new_skb, NET_IP_ALIGN); | |
1244 | rbi->skb = new_skb; | |
1245 | rbi->dma_addr = pci_map_single(adapter->pdev, | |
96800ee7 | 1246 | rbi->skb->data, rbi->len, |
1247 | PCI_DMA_FROMDEVICE); | |
5318d809 SB |
1248 | rxd->addr = cpu_to_le64(rbi->dma_addr); |
1249 | rxd->len = rbi->len; | |
1250 | ||
d1a890fa | 1251 | } else { |
5318d809 SB |
1252 | BUG_ON(ctx->skb == NULL && !skip_page_frags); |
1253 | ||
d1a890fa | 1254 | /* non SOP buffer must be type 1 in most cases */ |
5318d809 SB |
1255 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); |
1256 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
d1a890fa | 1257 | |
5318d809 SB |
1258 | /* If an sop buffer was dropped, skip all |
1259 | * following non-sop fragments. They will be reused. | |
1260 | */ | |
1261 | if (skip_page_frags) | |
1262 | goto rcd_done; | |
d1a890fa | 1263 | |
5318d809 SB |
1264 | new_page = alloc_page(GFP_ATOMIC); |
1265 | if (unlikely(new_page == NULL)) { | |
1266 | /* Replacement page frag could not be allocated. | |
1267 | * Reuse this page. Drop the pkt and free the | |
1268 | * skb which contained this page as a frag. Skip | |
1269 | * processing all the following non-sop frags. | |
d1a890fa | 1270 | */ |
5318d809 SB |
1271 | rq->stats.rx_buf_alloc_failure++; |
1272 | dev_kfree_skb(ctx->skb); | |
1273 | ctx->skb = NULL; | |
1274 | skip_page_frags = true; | |
1275 | goto rcd_done; | |
1276 | } | |
1277 | ||
1278 | if (rcd->len) { | |
1279 | pci_unmap_page(adapter->pdev, | |
1280 | rbi->dma_addr, rbi->len, | |
1281 | PCI_DMA_FROMDEVICE); | |
1282 | ||
1283 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
d1a890fa | 1284 | } |
5318d809 SB |
1285 | |
1286 | /* Immediate refill */ | |
1287 | rbi->page = new_page; | |
1288 | rbi->dma_addr = pci_map_page(adapter->pdev, rbi->page, | |
1289 | 0, PAGE_SIZE, | |
1290 | PCI_DMA_FROMDEVICE); | |
1291 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1292 | rxd->len = rbi->len; | |
d1a890fa SB |
1293 | } |
1294 | ||
5318d809 | 1295 | |
d1a890fa SB |
1296 | skb = ctx->skb; |
1297 | if (rcd->eop) { | |
1298 | skb->len += skb->data_len; | |
d1a890fa SB |
1299 | |
1300 | vmxnet3_rx_csum(adapter, skb, | |
1301 | (union Vmxnet3_GenericDesc *)rcd); | |
1302 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1303 | ||
72e85c45 JG |
1304 | if (unlikely(rcd->ts)) |
1305 | __vlan_hwaccel_put_tag(skb, rcd->tci); | |
1306 | ||
213ade8c JG |
1307 | if (adapter->netdev->features & NETIF_F_LRO) |
1308 | netif_receive_skb(skb); | |
1309 | else | |
1310 | napi_gro_receive(&rq->napi, skb); | |
d1a890fa | 1311 | |
d1a890fa SB |
1312 | ctx->skb = NULL; |
1313 | } | |
1314 | ||
1315 | rcd_done: | |
5318d809 SB |
1316 | /* device may have skipped some rx descs */ |
1317 | ring->next2comp = idx; | |
1318 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1319 | ring = rq->rx_ring + ring_idx; | |
1320 | while (num_to_alloc) { | |
1321 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1322 | &rxCmdDesc); | |
1323 | BUG_ON(!rxd->addr); | |
1324 | ||
1325 | /* Recv desc is ready to be used by the device */ | |
1326 | rxd->gen = ring->gen; | |
1327 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1328 | num_to_alloc--; | |
1329 | } | |
1330 | ||
1331 | /* if needed, update the register */ | |
1332 | if (unlikely(rq->shared->updateRxProd)) { | |
1333 | VMXNET3_WRITE_BAR0_REG(adapter, | |
96800ee7 | 1334 | rxprod_reg[ring_idx] + rq->qid * 8, |
1335 | ring->next2fill); | |
5318d809 | 1336 | rq->uncommitted[ring_idx] = 0; |
d1a890fa SB |
1337 | } |
1338 | ||
1339 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
115924b6 | 1340 | vmxnet3_getRxComp(rcd, |
96800ee7 | 1341 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); |
d1a890fa SB |
1342 | } |
1343 | ||
1344 | return num_rxd; | |
1345 | } | |
1346 | ||
1347 | ||
1348 | static void | |
1349 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1350 | struct vmxnet3_adapter *adapter) | |
1351 | { | |
1352 | u32 i, ring_idx; | |
1353 | struct Vmxnet3_RxDesc *rxd; | |
1354 | ||
1355 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1356 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
115924b6 SB |
1357 | #ifdef __BIG_ENDIAN_BITFIELD |
1358 | struct Vmxnet3_RxDesc rxDesc; | |
1359 | #endif | |
1360 | vmxnet3_getRxDesc(rxd, | |
1361 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
d1a890fa SB |
1362 | |
1363 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1364 | rq->buf_info[ring_idx][i].skb) { | |
1365 | pci_unmap_single(adapter->pdev, rxd->addr, | |
1366 | rxd->len, PCI_DMA_FROMDEVICE); | |
1367 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1368 | rq->buf_info[ring_idx][i].skb = NULL; | |
1369 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1370 | rq->buf_info[ring_idx][i].page) { | |
1371 | pci_unmap_page(adapter->pdev, rxd->addr, | |
1372 | rxd->len, PCI_DMA_FROMDEVICE); | |
1373 | put_page(rq->buf_info[ring_idx][i].page); | |
1374 | rq->buf_info[ring_idx][i].page = NULL; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1379 | rq->rx_ring[ring_idx].next2fill = | |
1380 | rq->rx_ring[ring_idx].next2comp = 0; | |
1381 | rq->uncommitted[ring_idx] = 0; | |
1382 | } | |
1383 | ||
1384 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1385 | rq->comp_ring.next2proc = 0; | |
1386 | } | |
1387 | ||
1388 | ||
09c5088e SB |
1389 | static void |
1390 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1391 | { | |
1392 | int i; | |
1393 | ||
1394 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1395 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1396 | } | |
1397 | ||
1398 | ||
d1a890fa SB |
1399 | void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, |
1400 | struct vmxnet3_adapter *adapter) | |
1401 | { | |
1402 | int i; | |
1403 | int j; | |
1404 | ||
1405 | /* all rx buffers must have already been freed */ | |
1406 | for (i = 0; i < 2; i++) { | |
1407 | if (rq->buf_info[i]) { | |
1408 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1409 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | ||
1414 | kfree(rq->buf_info[0]); | |
1415 | ||
1416 | for (i = 0; i < 2; i++) { | |
1417 | if (rq->rx_ring[i].base) { | |
1418 | pci_free_consistent(adapter->pdev, rq->rx_ring[i].size | |
1419 | * sizeof(struct Vmxnet3_RxDesc), | |
1420 | rq->rx_ring[i].base, | |
1421 | rq->rx_ring[i].basePA); | |
1422 | rq->rx_ring[i].base = NULL; | |
1423 | } | |
1424 | rq->buf_info[i] = NULL; | |
1425 | } | |
1426 | ||
1427 | if (rq->comp_ring.base) { | |
1428 | pci_free_consistent(adapter->pdev, rq->comp_ring.size * | |
1429 | sizeof(struct Vmxnet3_RxCompDesc), | |
1430 | rq->comp_ring.base, rq->comp_ring.basePA); | |
1431 | rq->comp_ring.base = NULL; | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | ||
1436 | static int | |
1437 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1438 | struct vmxnet3_adapter *adapter) | |
1439 | { | |
1440 | int i; | |
1441 | ||
1442 | /* initialize buf_info */ | |
1443 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1444 | ||
1445 | /* 1st buf for a pkt is skbuff */ | |
1446 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1447 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1448 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1449 | } else { /* subsequent bufs for a pkt is frag */ | |
1450 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1451 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1452 | } | |
1453 | } | |
1454 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1455 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1456 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1457 | } | |
1458 | ||
1459 | /* reset internal state and allocate buffers for both rings */ | |
1460 | for (i = 0; i < 2; i++) { | |
1461 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
1462 | rq->uncommitted[i] = 0; | |
1463 | ||
1464 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1465 | sizeof(struct Vmxnet3_RxDesc)); | |
1466 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1467 | } | |
1468 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1469 | adapter) == 0) { | |
1470 | /* at least has 1 rx buffer for the 1st ring */ | |
1471 | return -ENOMEM; | |
1472 | } | |
1473 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1474 | ||
1475 | /* reset the comp ring */ | |
1476 | rq->comp_ring.next2proc = 0; | |
1477 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1478 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1479 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1480 | ||
1481 | /* reset rxctx */ | |
1482 | rq->rx_ctx.skb = NULL; | |
1483 | ||
1484 | /* stats are not reset */ | |
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | ||
09c5088e SB |
1489 | static int |
1490 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1491 | { | |
1492 | int i, err = 0; | |
1493 | ||
1494 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1495 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1496 | if (unlikely(err)) { | |
1497 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1498 | "initialize rx queue%i\n", | |
1499 | adapter->netdev->name, i); | |
1500 | break; | |
1501 | } | |
1502 | } | |
1503 | return err; | |
1504 | ||
1505 | } | |
1506 | ||
1507 | ||
d1a890fa SB |
1508 | static int |
1509 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1510 | { | |
1511 | int i; | |
1512 | size_t sz; | |
1513 | struct vmxnet3_rx_buf_info *bi; | |
1514 | ||
1515 | for (i = 0; i < 2; i++) { | |
1516 | ||
1517 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
1518 | rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz, | |
1519 | &rq->rx_ring[i].basePA); | |
1520 | if (!rq->rx_ring[i].base) { | |
1521 | printk(KERN_ERR "%s: failed to allocate rx ring %d\n", | |
1522 | adapter->netdev->name, i); | |
1523 | goto err; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
1528 | rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz, | |
1529 | &rq->comp_ring.basePA); | |
1530 | if (!rq->comp_ring.base) { | |
1531 | printk(KERN_ERR "%s: failed to allocate rx comp ring\n", | |
1532 | adapter->netdev->name); | |
1533 | goto err; | |
1534 | } | |
1535 | ||
1536 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1537 | rq->rx_ring[1].size); | |
476c609e | 1538 | bi = kzalloc(sz, GFP_KERNEL); |
e404decb | 1539 | if (!bi) |
d1a890fa | 1540 | goto err; |
e404decb | 1541 | |
d1a890fa SB |
1542 | rq->buf_info[0] = bi; |
1543 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1544 | ||
1545 | return 0; | |
1546 | ||
1547 | err: | |
1548 | vmxnet3_rq_destroy(rq, adapter); | |
1549 | return -ENOMEM; | |
1550 | } | |
1551 | ||
1552 | ||
09c5088e SB |
1553 | static int |
1554 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1555 | { | |
1556 | int i, err = 0; | |
1557 | ||
1558 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1559 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1560 | if (unlikely(err)) { | |
1561 | dev_err(&adapter->netdev->dev, | |
1562 | "%s: failed to create rx queue%i\n", | |
1563 | adapter->netdev->name, i); | |
1564 | goto err_out; | |
1565 | } | |
1566 | } | |
1567 | return err; | |
1568 | err_out: | |
1569 | vmxnet3_rq_destroy_all(adapter); | |
1570 | return err; | |
1571 | ||
1572 | } | |
1573 | ||
1574 | /* Multiple queue aware polling function for tx and rx */ | |
1575 | ||
d1a890fa SB |
1576 | static int |
1577 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1578 | { | |
09c5088e | 1579 | int rcd_done = 0, i; |
d1a890fa SB |
1580 | if (unlikely(adapter->shared->ecr)) |
1581 | vmxnet3_process_events(adapter); | |
09c5088e SB |
1582 | for (i = 0; i < adapter->num_tx_queues; i++) |
1583 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
d1a890fa | 1584 | |
09c5088e SB |
1585 | for (i = 0; i < adapter->num_rx_queues; i++) |
1586 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1587 | adapter, budget); | |
1588 | return rcd_done; | |
d1a890fa SB |
1589 | } |
1590 | ||
1591 | ||
1592 | static int | |
1593 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1594 | { | |
09c5088e SB |
1595 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, |
1596 | struct vmxnet3_rx_queue, napi); | |
1597 | int rxd_done; | |
1598 | ||
1599 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1600 | ||
1601 | if (rxd_done < budget) { | |
1602 | napi_complete(napi); | |
1603 | vmxnet3_enable_all_intrs(rx_queue->adapter); | |
1604 | } | |
1605 | return rxd_done; | |
1606 | } | |
1607 | ||
1608 | /* | |
1609 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1610 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1611 | */ | |
1612 | ||
1613 | static int | |
1614 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1615 | { | |
1616 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1617 | struct vmxnet3_rx_queue, napi); | |
1618 | struct vmxnet3_adapter *adapter = rq->adapter; | |
d1a890fa SB |
1619 | int rxd_done; |
1620 | ||
09c5088e SB |
1621 | /* When sharing interrupt with corresponding tx queue, process |
1622 | * tx completions in that queue as well | |
1623 | */ | |
1624 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1625 | struct vmxnet3_tx_queue *tq = | |
1626 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1627 | vmxnet3_tq_tx_complete(tq, adapter); | |
1628 | } | |
1629 | ||
1630 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
d1a890fa SB |
1631 | |
1632 | if (rxd_done < budget) { | |
1633 | napi_complete(napi); | |
09c5088e | 1634 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); |
d1a890fa SB |
1635 | } |
1636 | return rxd_done; | |
1637 | } | |
1638 | ||
1639 | ||
09c5088e SB |
1640 | #ifdef CONFIG_PCI_MSI |
1641 | ||
1642 | /* | |
1643 | * Handle completion interrupts on tx queues | |
1644 | * Returns whether or not the intr is handled | |
1645 | */ | |
1646 | ||
1647 | static irqreturn_t | |
1648 | vmxnet3_msix_tx(int irq, void *data) | |
1649 | { | |
1650 | struct vmxnet3_tx_queue *tq = data; | |
1651 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1652 | ||
1653 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1654 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1655 | ||
1656 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1657 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1658 | int i; | |
1659 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1660 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1661 | vmxnet3_tq_tx_complete(txq, adapter); | |
1662 | } | |
1663 | } else { | |
1664 | vmxnet3_tq_tx_complete(tq, adapter); | |
1665 | } | |
1666 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1667 | ||
1668 | return IRQ_HANDLED; | |
1669 | } | |
1670 | ||
1671 | ||
1672 | /* | |
1673 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1674 | * intr is handled | |
1675 | */ | |
1676 | ||
1677 | static irqreturn_t | |
1678 | vmxnet3_msix_rx(int irq, void *data) | |
1679 | { | |
1680 | struct vmxnet3_rx_queue *rq = data; | |
1681 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1682 | ||
1683 | /* disable intr if needed */ | |
1684 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1685 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1686 | napi_schedule(&rq->napi); | |
1687 | ||
1688 | return IRQ_HANDLED; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | *---------------------------------------------------------------------------- | |
1693 | * | |
1694 | * vmxnet3_msix_event -- | |
1695 | * | |
1696 | * vmxnet3 msix event intr handler | |
1697 | * | |
1698 | * Result: | |
1699 | * whether or not the intr is handled | |
1700 | * | |
1701 | *---------------------------------------------------------------------------- | |
1702 | */ | |
1703 | ||
1704 | static irqreturn_t | |
1705 | vmxnet3_msix_event(int irq, void *data) | |
1706 | { | |
1707 | struct net_device *dev = data; | |
1708 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1709 | ||
1710 | /* disable intr if needed */ | |
1711 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1712 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
1713 | ||
1714 | if (adapter->shared->ecr) | |
1715 | vmxnet3_process_events(adapter); | |
1716 | ||
1717 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
1718 | ||
1719 | return IRQ_HANDLED; | |
1720 | } | |
1721 | ||
1722 | #endif /* CONFIG_PCI_MSI */ | |
1723 | ||
1724 | ||
d1a890fa SB |
1725 | /* Interrupt handler for vmxnet3 */ |
1726 | static irqreturn_t | |
1727 | vmxnet3_intr(int irq, void *dev_id) | |
1728 | { | |
1729 | struct net_device *dev = dev_id; | |
1730 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1731 | ||
09c5088e | 1732 | if (adapter->intr.type == VMXNET3_IT_INTX) { |
d1a890fa SB |
1733 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); |
1734 | if (unlikely(icr == 0)) | |
1735 | /* not ours */ | |
1736 | return IRQ_NONE; | |
1737 | } | |
1738 | ||
1739 | ||
1740 | /* disable intr if needed */ | |
1741 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
09c5088e | 1742 | vmxnet3_disable_all_intrs(adapter); |
d1a890fa | 1743 | |
09c5088e | 1744 | napi_schedule(&adapter->rx_queue[0].napi); |
d1a890fa SB |
1745 | |
1746 | return IRQ_HANDLED; | |
1747 | } | |
1748 | ||
1749 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1750 | ||
d1a890fa SB |
1751 | /* netpoll callback. */ |
1752 | static void | |
1753 | vmxnet3_netpoll(struct net_device *netdev) | |
1754 | { | |
1755 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1756 | |
09c5088e SB |
1757 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) |
1758 | vmxnet3_disable_all_intrs(adapter); | |
1759 | ||
1760 | vmxnet3_do_poll(adapter, adapter->rx_queue[0].rx_ring[0].size); | |
1761 | vmxnet3_enable_all_intrs(adapter); | |
d1a890fa | 1762 | |
d1a890fa | 1763 | } |
09c5088e | 1764 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
d1a890fa SB |
1765 | |
1766 | static int | |
1767 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1768 | { | |
09c5088e SB |
1769 | struct vmxnet3_intr *intr = &adapter->intr; |
1770 | int err = 0, i; | |
1771 | int vector = 0; | |
d1a890fa | 1772 | |
8f7e524c | 1773 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1774 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
1775 | for (i = 0; i < adapter->num_tx_queues; i++) { |
1776 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1777 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
1778 | adapter->netdev->name, vector); | |
1779 | err = request_irq( | |
1780 | intr->msix_entries[vector].vector, | |
1781 | vmxnet3_msix_tx, 0, | |
1782 | adapter->tx_queue[i].name, | |
1783 | &adapter->tx_queue[i]); | |
1784 | } else { | |
1785 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
1786 | adapter->netdev->name, vector); | |
1787 | } | |
1788 | if (err) { | |
1789 | dev_err(&adapter->netdev->dev, | |
1790 | "Failed to request irq for MSIX, %s, " | |
1791 | "error %d\n", | |
1792 | adapter->tx_queue[i].name, err); | |
1793 | return err; | |
1794 | } | |
1795 | ||
1796 | /* Handle the case where only 1 MSIx was allocated for | |
1797 | * all tx queues */ | |
1798 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1799 | for (; i < adapter->num_tx_queues; i++) | |
1800 | adapter->tx_queue[i].comp_ring.intr_idx | |
1801 | = vector; | |
1802 | vector++; | |
1803 | break; | |
1804 | } else { | |
1805 | adapter->tx_queue[i].comp_ring.intr_idx | |
1806 | = vector++; | |
1807 | } | |
1808 | } | |
1809 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
1810 | vector = 0; | |
1811 | ||
1812 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1813 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
1814 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
1815 | adapter->netdev->name, vector); | |
1816 | else | |
1817 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
1818 | adapter->netdev->name, vector); | |
1819 | err = request_irq(intr->msix_entries[vector].vector, | |
1820 | vmxnet3_msix_rx, 0, | |
1821 | adapter->rx_queue[i].name, | |
1822 | &(adapter->rx_queue[i])); | |
1823 | if (err) { | |
1824 | printk(KERN_ERR "Failed to request irq for MSIX" | |
1825 | ", %s, error %d\n", | |
1826 | adapter->rx_queue[i].name, err); | |
1827 | return err; | |
1828 | } | |
1829 | ||
1830 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
1831 | } | |
1832 | ||
1833 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
1834 | adapter->netdev->name, vector); | |
1835 | err = request_irq(intr->msix_entries[vector].vector, | |
1836 | vmxnet3_msix_event, 0, | |
1837 | intr->event_msi_vector_name, adapter->netdev); | |
1838 | intr->event_intr_idx = vector; | |
1839 | ||
1840 | } else if (intr->type == VMXNET3_IT_MSI) { | |
1841 | adapter->num_rx_queues = 1; | |
d1a890fa SB |
1842 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, |
1843 | adapter->netdev->name, adapter->netdev); | |
09c5088e | 1844 | } else { |
115924b6 | 1845 | #endif |
09c5088e | 1846 | adapter->num_rx_queues = 1; |
d1a890fa SB |
1847 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, |
1848 | IRQF_SHARED, adapter->netdev->name, | |
1849 | adapter->netdev); | |
09c5088e | 1850 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1851 | } |
09c5088e SB |
1852 | #endif |
1853 | intr->num_intrs = vector + 1; | |
1854 | if (err) { | |
d1a890fa | 1855 | printk(KERN_ERR "Failed to request irq %s (intr type:%d), error" |
09c5088e SB |
1856 | ":%d\n", adapter->netdev->name, intr->type, err); |
1857 | } else { | |
1858 | /* Number of rx queues will not change after this */ | |
1859 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1860 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1861 | rq->qid = i; | |
1862 | rq->qid2 = i + adapter->num_rx_queues; | |
1863 | } | |
d1a890fa SB |
1864 | |
1865 | ||
d1a890fa | 1866 | |
09c5088e SB |
1867 | /* init our intr settings */ |
1868 | for (i = 0; i < intr->num_intrs; i++) | |
1869 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
1870 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
1871 | adapter->intr.event_intr_idx = 0; | |
1872 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1873 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
1874 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
1875 | } | |
d1a890fa SB |
1876 | |
1877 | printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors " | |
09c5088e SB |
1878 | "allocated\n", adapter->netdev->name, intr->type, |
1879 | intr->mask_mode, intr->num_intrs); | |
d1a890fa SB |
1880 | } |
1881 | ||
1882 | return err; | |
1883 | } | |
1884 | ||
1885 | ||
1886 | static void | |
1887 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
1888 | { | |
09c5088e SB |
1889 | struct vmxnet3_intr *intr = &adapter->intr; |
1890 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
d1a890fa | 1891 | |
09c5088e | 1892 | switch (intr->type) { |
8f7e524c | 1893 | #ifdef CONFIG_PCI_MSI |
d1a890fa SB |
1894 | case VMXNET3_IT_MSIX: |
1895 | { | |
09c5088e | 1896 | int i, vector = 0; |
d1a890fa | 1897 | |
09c5088e SB |
1898 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { |
1899 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1900 | free_irq(intr->msix_entries[vector++].vector, | |
1901 | &(adapter->tx_queue[i])); | |
1902 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
1903 | break; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1908 | free_irq(intr->msix_entries[vector++].vector, | |
1909 | &(adapter->rx_queue[i])); | |
1910 | } | |
1911 | ||
1912 | free_irq(intr->msix_entries[vector].vector, | |
1913 | adapter->netdev); | |
1914 | BUG_ON(vector >= intr->num_intrs); | |
d1a890fa SB |
1915 | break; |
1916 | } | |
8f7e524c | 1917 | #endif |
d1a890fa SB |
1918 | case VMXNET3_IT_MSI: |
1919 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1920 | break; | |
1921 | case VMXNET3_IT_INTX: | |
1922 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1923 | break; | |
1924 | default: | |
c068e777 | 1925 | BUG(); |
d1a890fa SB |
1926 | } |
1927 | } | |
1928 | ||
d1a890fa SB |
1929 | |
1930 | static void | |
1931 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
1932 | { | |
72e85c45 JG |
1933 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; |
1934 | u16 vid; | |
d1a890fa | 1935 | |
72e85c45 JG |
1936 | /* allow untagged pkts */ |
1937 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1938 | ||
1939 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
1940 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
d1a890fa SB |
1941 | } |
1942 | ||
1943 | ||
8e586137 | 1944 | static int |
d1a890fa SB |
1945 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1946 | { | |
1947 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1948 | |
f6957f88 JG |
1949 | if (!(netdev->flags & IFF_PROMISC)) { |
1950 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1951 | unsigned long flags; | |
1952 | ||
1953 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1954 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1955 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1956 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1957 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1958 | } | |
72e85c45 JG |
1959 | |
1960 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
1961 | |
1962 | return 0; | |
d1a890fa SB |
1963 | } |
1964 | ||
1965 | ||
8e586137 | 1966 | static int |
d1a890fa SB |
1967 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1968 | { | |
1969 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1970 | |
f6957f88 JG |
1971 | if (!(netdev->flags & IFF_PROMISC)) { |
1972 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1973 | unsigned long flags; | |
1974 | ||
1975 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
1976 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1977 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1978 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1979 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1980 | } | |
72e85c45 JG |
1981 | |
1982 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
1983 | |
1984 | return 0; | |
d1a890fa SB |
1985 | } |
1986 | ||
1987 | ||
1988 | static u8 * | |
1989 | vmxnet3_copy_mc(struct net_device *netdev) | |
1990 | { | |
1991 | u8 *buf = NULL; | |
4cd24eaf | 1992 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; |
d1a890fa SB |
1993 | |
1994 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
1995 | if (sz <= 0xffff) { | |
1996 | /* We may be called with BH disabled */ | |
1997 | buf = kmalloc(sz, GFP_ATOMIC); | |
1998 | if (buf) { | |
22bedad3 | 1999 | struct netdev_hw_addr *ha; |
567ec874 | 2000 | int i = 0; |
d1a890fa | 2001 | |
22bedad3 JP |
2002 | netdev_for_each_mc_addr(ha, netdev) |
2003 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
d1a890fa | 2004 | ETH_ALEN); |
d1a890fa SB |
2005 | } |
2006 | } | |
2007 | return buf; | |
2008 | } | |
2009 | ||
2010 | ||
2011 | static void | |
2012 | vmxnet3_set_mc(struct net_device *netdev) | |
2013 | { | |
2014 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
83d0feff | 2015 | unsigned long flags; |
d1a890fa SB |
2016 | struct Vmxnet3_RxFilterConf *rxConf = |
2017 | &adapter->shared->devRead.rxFilterConf; | |
2018 | u8 *new_table = NULL; | |
2019 | u32 new_mode = VMXNET3_RXM_UCAST; | |
2020 | ||
72e85c45 JG |
2021 | if (netdev->flags & IFF_PROMISC) { |
2022 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2023 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2024 | ||
d1a890fa | 2025 | new_mode |= VMXNET3_RXM_PROMISC; |
72e85c45 JG |
2026 | } else { |
2027 | vmxnet3_restore_vlan(adapter); | |
2028 | } | |
d1a890fa SB |
2029 | |
2030 | if (netdev->flags & IFF_BROADCAST) | |
2031 | new_mode |= VMXNET3_RXM_BCAST; | |
2032 | ||
2033 | if (netdev->flags & IFF_ALLMULTI) | |
2034 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2035 | else | |
4cd24eaf | 2036 | if (!netdev_mc_empty(netdev)) { |
d1a890fa SB |
2037 | new_table = vmxnet3_copy_mc(netdev); |
2038 | if (new_table) { | |
2039 | new_mode |= VMXNET3_RXM_MCAST; | |
115924b6 | 2040 | rxConf->mfTableLen = cpu_to_le16( |
4cd24eaf | 2041 | netdev_mc_count(netdev) * ETH_ALEN); |
115924b6 SB |
2042 | rxConf->mfTablePA = cpu_to_le64(virt_to_phys( |
2043 | new_table)); | |
d1a890fa SB |
2044 | } else { |
2045 | printk(KERN_INFO "%s: failed to copy mcast list" | |
2046 | ", setting ALL_MULTI\n", netdev->name); | |
2047 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2048 | } | |
2049 | } | |
2050 | ||
2051 | ||
2052 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
2053 | rxConf->mfTableLen = 0; | |
2054 | rxConf->mfTablePA = 0; | |
2055 | } | |
2056 | ||
83d0feff | 2057 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 2058 | if (new_mode != rxConf->rxMode) { |
115924b6 | 2059 | rxConf->rxMode = cpu_to_le32(new_mode); |
d1a890fa SB |
2060 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2061 | VMXNET3_CMD_UPDATE_RX_MODE); | |
72e85c45 JG |
2062 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2063 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
d1a890fa SB |
2064 | } |
2065 | ||
2066 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2067 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
83d0feff | 2068 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2069 | |
2070 | kfree(new_table); | |
2071 | } | |
2072 | ||
09c5088e SB |
2073 | void |
2074 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2075 | { | |
2076 | int i; | |
2077 | ||
2078 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2079 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2080 | } | |
2081 | ||
d1a890fa SB |
2082 | |
2083 | /* | |
2084 | * Set up driver_shared based on settings in adapter. | |
2085 | */ | |
2086 | ||
2087 | static void | |
2088 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2089 | { | |
2090 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2091 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2092 | struct Vmxnet3_TxQueueConf *tqc; | |
2093 | struct Vmxnet3_RxQueueConf *rqc; | |
2094 | int i; | |
2095 | ||
2096 | memset(shared, 0, sizeof(*shared)); | |
2097 | ||
2098 | /* driver settings */ | |
115924b6 SB |
2099 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); |
2100 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2101 | VMXNET3_DRIVER_VERSION_NUM); | |
d1a890fa SB |
2102 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? |
2103 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2104 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
115924b6 SB |
2105 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( |
2106 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2107 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2108 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
d1a890fa | 2109 | |
115924b6 SB |
2110 | devRead->misc.ddPA = cpu_to_le64(virt_to_phys(adapter)); |
2111 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); | |
d1a890fa SB |
2112 | |
2113 | /* set up feature flags */ | |
a0d2730c | 2114 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
3843e515 | 2115 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; |
d1a890fa | 2116 | |
a0d2730c | 2117 | if (adapter->netdev->features & NETIF_F_LRO) { |
3843e515 | 2118 | devRead->misc.uptFeatures |= UPT1_F_LRO; |
115924b6 | 2119 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); |
d1a890fa | 2120 | } |
54da3d00 | 2121 | if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) |
3843e515 | 2122 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; |
d1a890fa | 2123 | |
115924b6 SB |
2124 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); |
2125 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2126 | devRead->misc.queueDescLen = cpu_to_le32( | |
09c5088e SB |
2127 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + |
2128 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
d1a890fa SB |
2129 | |
2130 | /* tx queue settings */ | |
09c5088e SB |
2131 | devRead->misc.numTxQueues = adapter->num_tx_queues; |
2132 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2133 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2134 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2135 | tqc = &adapter->tqd_start[i].conf; | |
2136 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2137 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2138 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
2139 | tqc->ddPA = cpu_to_le64(virt_to_phys(tq->buf_info)); | |
2140 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); | |
2141 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
2142 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); | |
2143 | tqc->ddLen = cpu_to_le32( | |
2144 | sizeof(struct vmxnet3_tx_buf_info) * | |
2145 | tqc->txRingSize); | |
2146 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2147 | } | |
d1a890fa SB |
2148 | |
2149 | /* rx queue settings */ | |
09c5088e SB |
2150 | devRead->misc.numRxQueues = adapter->num_rx_queues; |
2151 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2152 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2153 | rqc = &adapter->rqd_start[i].conf; | |
2154 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2155 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2156 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
2157 | rqc->ddPA = cpu_to_le64(virt_to_phys( | |
2158 | rq->buf_info)); | |
2159 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); | |
2160 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2161 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2162 | rqc->ddLen = cpu_to_le32( | |
2163 | sizeof(struct vmxnet3_rx_buf_info) * | |
2164 | (rqc->rxRingSize[0] + | |
2165 | rqc->rxRingSize[1])); | |
2166 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
2167 | } | |
2168 | ||
2169 | #ifdef VMXNET3_RSS | |
2170 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2171 | ||
2172 | if (adapter->rss) { | |
2173 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
2174 | devRead->misc.uptFeatures |= UPT1_F_RSS; | |
2175 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2176 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2177 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2178 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2179 | UPT1_RSS_HASH_TYPE_IPV6; | |
2180 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2181 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2182 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
2183 | get_random_bytes(&rssConf->hashKey[0], rssConf->hashKeySize); | |
2184 | for (i = 0; i < rssConf->indTableSize; i++) | |
278bc429 BH |
2185 | rssConf->indTable[i] = ethtool_rxfh_indir_default( |
2186 | i, adapter->num_rx_queues); | |
09c5088e SB |
2187 | |
2188 | devRead->rssConfDesc.confVer = 1; | |
2189 | devRead->rssConfDesc.confLen = sizeof(*rssConf); | |
2190 | devRead->rssConfDesc.confPA = virt_to_phys(rssConf); | |
2191 | } | |
2192 | ||
2193 | #endif /* VMXNET3_RSS */ | |
d1a890fa SB |
2194 | |
2195 | /* intr settings */ | |
2196 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2197 | VMXNET3_IMM_AUTO; | |
2198 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2199 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2200 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2201 | ||
2202 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
6929fe8a | 2203 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); |
d1a890fa SB |
2204 | |
2205 | /* rx filter settings */ | |
2206 | devRead->rxFilterConf.rxMode = 0; | |
2207 | vmxnet3_restore_vlan(adapter); | |
f9f25026 SB |
2208 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); |
2209 | ||
d1a890fa SB |
2210 | /* the rest are already zeroed */ |
2211 | } | |
2212 | ||
2213 | ||
2214 | int | |
2215 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2216 | { | |
09c5088e | 2217 | int err, i; |
d1a890fa | 2218 | u32 ret; |
83d0feff | 2219 | unsigned long flags; |
d1a890fa | 2220 | |
09c5088e SB |
2221 | dev_dbg(&adapter->netdev->dev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," |
2222 | " ring sizes %u %u %u\n", adapter->netdev->name, | |
2223 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2224 | adapter->tx_queue[0].tx_ring.size, | |
2225 | adapter->rx_queue[0].rx_ring[0].size, | |
2226 | adapter->rx_queue[0].rx_ring[1].size); | |
2227 | ||
2228 | vmxnet3_tq_init_all(adapter); | |
2229 | err = vmxnet3_rq_init_all(adapter); | |
d1a890fa SB |
2230 | if (err) { |
2231 | printk(KERN_ERR "Failed to init rx queue for %s: error %d\n", | |
2232 | adapter->netdev->name, err); | |
2233 | goto rq_err; | |
2234 | } | |
2235 | ||
2236 | err = vmxnet3_request_irqs(adapter); | |
2237 | if (err) { | |
2238 | printk(KERN_ERR "Failed to setup irq for %s: error %d\n", | |
2239 | adapter->netdev->name, err); | |
2240 | goto irq_err; | |
2241 | } | |
2242 | ||
2243 | vmxnet3_setup_driver_shared(adapter); | |
2244 | ||
115924b6 SB |
2245 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( |
2246 | adapter->shared_pa)); | |
2247 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2248 | adapter->shared_pa)); | |
83d0feff | 2249 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2250 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2251 | VMXNET3_CMD_ACTIVATE_DEV); | |
2252 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2253 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2254 | |
2255 | if (ret != 0) { | |
2256 | printk(KERN_ERR "Failed to activate dev %s: error %u\n", | |
2257 | adapter->netdev->name, ret); | |
2258 | err = -EINVAL; | |
2259 | goto activate_err; | |
2260 | } | |
09c5088e SB |
2261 | |
2262 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2263 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2264 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2265 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2266 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2267 | (i * VMXNET3_REG_ALIGN)), | |
2268 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2269 | } | |
d1a890fa SB |
2270 | |
2271 | /* Apply the rx filter settins last. */ | |
2272 | vmxnet3_set_mc(adapter->netdev); | |
2273 | ||
2274 | /* | |
2275 | * Check link state when first activating device. It will start the | |
2276 | * tx queue if the link is up. | |
2277 | */ | |
4a1745fc | 2278 | vmxnet3_check_link(adapter, true); |
09c5088e SB |
2279 | for (i = 0; i < adapter->num_rx_queues; i++) |
2280 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2281 | vmxnet3_enable_all_intrs(adapter); |
2282 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2283 | return 0; | |
2284 | ||
2285 | activate_err: | |
2286 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2287 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2288 | vmxnet3_free_irqs(adapter); | |
2289 | irq_err: | |
2290 | rq_err: | |
2291 | /* free up buffers we allocated */ | |
09c5088e | 2292 | vmxnet3_rq_cleanup_all(adapter); |
d1a890fa SB |
2293 | return err; |
2294 | } | |
2295 | ||
2296 | ||
2297 | void | |
2298 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2299 | { | |
83d0feff SB |
2300 | unsigned long flags; |
2301 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
d1a890fa | 2302 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); |
83d0feff | 2303 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2304 | } |
2305 | ||
2306 | ||
2307 | int | |
2308 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2309 | { | |
09c5088e | 2310 | int i; |
83d0feff | 2311 | unsigned long flags; |
d1a890fa SB |
2312 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) |
2313 | return 0; | |
2314 | ||
2315 | ||
83d0feff | 2316 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2317 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2318 | VMXNET3_CMD_QUIESCE_DEV); | |
83d0feff | 2319 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2320 | vmxnet3_disable_all_intrs(adapter); |
2321 | ||
09c5088e SB |
2322 | for (i = 0; i < adapter->num_rx_queues; i++) |
2323 | napi_disable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2324 | netif_tx_disable(adapter->netdev); |
2325 | adapter->link_speed = 0; | |
2326 | netif_carrier_off(adapter->netdev); | |
2327 | ||
09c5088e SB |
2328 | vmxnet3_tq_cleanup_all(adapter); |
2329 | vmxnet3_rq_cleanup_all(adapter); | |
d1a890fa SB |
2330 | vmxnet3_free_irqs(adapter); |
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | ||
2335 | static void | |
2336 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2337 | { | |
2338 | u32 tmp; | |
2339 | ||
2340 | tmp = *(u32 *)mac; | |
2341 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2342 | ||
2343 | tmp = (mac[5] << 8) | mac[4]; | |
2344 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2345 | } | |
2346 | ||
2347 | ||
2348 | static int | |
2349 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2350 | { | |
2351 | struct sockaddr *addr = p; | |
2352 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2353 | ||
2354 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2355 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2356 | ||
2357 | return 0; | |
2358 | } | |
2359 | ||
2360 | ||
2361 | /* ==================== initialization and cleanup routines ============ */ | |
2362 | ||
2363 | static int | |
2364 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
2365 | { | |
2366 | int err; | |
2367 | unsigned long mmio_start, mmio_len; | |
2368 | struct pci_dev *pdev = adapter->pdev; | |
2369 | ||
2370 | err = pci_enable_device(pdev); | |
2371 | if (err) { | |
2372 | printk(KERN_ERR "Failed to enable adapter %s: error %d\n", | |
2373 | pci_name(pdev), err); | |
2374 | return err; | |
2375 | } | |
2376 | ||
2377 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
2378 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
2379 | printk(KERN_ERR "pci_set_consistent_dma_mask failed " | |
2380 | "for adapter %s\n", pci_name(pdev)); | |
2381 | err = -EIO; | |
2382 | goto err_set_mask; | |
2383 | } | |
2384 | *dma64 = true; | |
2385 | } else { | |
2386 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
2387 | printk(KERN_ERR "pci_set_dma_mask failed for adapter " | |
2388 | "%s\n", pci_name(pdev)); | |
2389 | err = -EIO; | |
2390 | goto err_set_mask; | |
2391 | } | |
2392 | *dma64 = false; | |
2393 | } | |
2394 | ||
2395 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
2396 | vmxnet3_driver_name); | |
2397 | if (err) { | |
2398 | printk(KERN_ERR "Failed to request region for adapter %s: " | |
2399 | "error %d\n", pci_name(pdev), err); | |
2400 | goto err_set_mask; | |
2401 | } | |
2402 | ||
2403 | pci_set_master(pdev); | |
2404 | ||
2405 | mmio_start = pci_resource_start(pdev, 0); | |
2406 | mmio_len = pci_resource_len(pdev, 0); | |
2407 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2408 | if (!adapter->hw_addr0) { | |
2409 | printk(KERN_ERR "Failed to map bar0 for adapter %s\n", | |
2410 | pci_name(pdev)); | |
2411 | err = -EIO; | |
2412 | goto err_ioremap; | |
2413 | } | |
2414 | ||
2415 | mmio_start = pci_resource_start(pdev, 1); | |
2416 | mmio_len = pci_resource_len(pdev, 1); | |
2417 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2418 | if (!adapter->hw_addr1) { | |
2419 | printk(KERN_ERR "Failed to map bar1 for adapter %s\n", | |
2420 | pci_name(pdev)); | |
2421 | err = -EIO; | |
2422 | goto err_bar1; | |
2423 | } | |
2424 | return 0; | |
2425 | ||
2426 | err_bar1: | |
2427 | iounmap(adapter->hw_addr0); | |
2428 | err_ioremap: | |
2429 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
2430 | err_set_mask: | |
2431 | pci_disable_device(pdev); | |
2432 | return err; | |
2433 | } | |
2434 | ||
2435 | ||
2436 | static void | |
2437 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2438 | { | |
2439 | BUG_ON(!adapter->pdev); | |
2440 | ||
2441 | iounmap(adapter->hw_addr0); | |
2442 | iounmap(adapter->hw_addr1); | |
2443 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2444 | pci_disable_device(adapter->pdev); | |
2445 | } | |
2446 | ||
2447 | ||
2448 | static void | |
2449 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2450 | { | |
09c5088e SB |
2451 | size_t sz, i, ring0_size, ring1_size, comp_size; |
2452 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[0]; | |
2453 | ||
d1a890fa SB |
2454 | |
2455 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
2456 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2457 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2458 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2459 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2460 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2461 | ||
2462 | adapter->rx_buf_per_pkt = 1; | |
2463 | } else { | |
2464 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2465 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2466 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2467 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2468 | } | |
2469 | ||
2470 | /* | |
2471 | * for simplicity, force the ring0 size to be a multiple of | |
2472 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2473 | */ | |
2474 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
09c5088e SB |
2475 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; |
2476 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
a53255d3 | 2477 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / |
09c5088e SB |
2478 | sz * sz); |
2479 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
2480 | comp_size = ring0_size + ring1_size; | |
2481 | ||
2482 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2483 | rq = &adapter->rx_queue[i]; | |
2484 | rq->rx_ring[0].size = ring0_size; | |
2485 | rq->rx_ring[1].size = ring1_size; | |
2486 | rq->comp_ring.size = comp_size; | |
2487 | } | |
d1a890fa SB |
2488 | } |
2489 | ||
2490 | ||
2491 | int | |
2492 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
2493 | u32 rx_ring_size, u32 rx_ring2_size) | |
2494 | { | |
09c5088e SB |
2495 | int err = 0, i; |
2496 | ||
2497 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2498 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2499 | tq->tx_ring.size = tx_ring_size; | |
2500 | tq->data_ring.size = tx_ring_size; | |
2501 | tq->comp_ring.size = tx_ring_size; | |
2502 | tq->shared = &adapter->tqd_start[i].ctrl; | |
2503 | tq->stopped = true; | |
2504 | tq->adapter = adapter; | |
2505 | tq->qid = i; | |
2506 | err = vmxnet3_tq_create(tq, adapter); | |
2507 | /* | |
2508 | * Too late to change num_tx_queues. We cannot do away with | |
2509 | * lesser number of queues than what we asked for | |
2510 | */ | |
2511 | if (err) | |
2512 | goto queue_err; | |
2513 | } | |
d1a890fa | 2514 | |
09c5088e SB |
2515 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; |
2516 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
d1a890fa | 2517 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e SB |
2518 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2519 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2520 | /* qid and qid2 for rx queues will be assigned later when num | |
2521 | * of rx queues is finalized after allocating intrs */ | |
2522 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2523 | rq->adapter = adapter; | |
2524 | err = vmxnet3_rq_create(rq, adapter); | |
2525 | if (err) { | |
2526 | if (i == 0) { | |
2527 | printk(KERN_ERR "Could not allocate any rx" | |
2528 | "queues. Aborting.\n"); | |
2529 | goto queue_err; | |
2530 | } else { | |
2531 | printk(KERN_INFO "Number of rx queues changed " | |
2532 | "to : %d.\n", i); | |
2533 | adapter->num_rx_queues = i; | |
2534 | err = 0; | |
2535 | break; | |
2536 | } | |
2537 | } | |
2538 | } | |
2539 | return err; | |
2540 | queue_err: | |
2541 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2542 | return err; |
2543 | } | |
2544 | ||
2545 | static int | |
2546 | vmxnet3_open(struct net_device *netdev) | |
2547 | { | |
2548 | struct vmxnet3_adapter *adapter; | |
09c5088e | 2549 | int err, i; |
d1a890fa SB |
2550 | |
2551 | adapter = netdev_priv(netdev); | |
2552 | ||
09c5088e SB |
2553 | for (i = 0; i < adapter->num_tx_queues; i++) |
2554 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
d1a890fa SB |
2555 | |
2556 | err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE, | |
2557 | VMXNET3_DEF_RX_RING_SIZE, | |
2558 | VMXNET3_DEF_RX_RING_SIZE); | |
2559 | if (err) | |
2560 | goto queue_err; | |
2561 | ||
2562 | err = vmxnet3_activate_dev(adapter); | |
2563 | if (err) | |
2564 | goto activate_err; | |
2565 | ||
2566 | return 0; | |
2567 | ||
2568 | activate_err: | |
09c5088e SB |
2569 | vmxnet3_rq_destroy_all(adapter); |
2570 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2571 | queue_err: |
2572 | return err; | |
2573 | } | |
2574 | ||
2575 | ||
2576 | static int | |
2577 | vmxnet3_close(struct net_device *netdev) | |
2578 | { | |
2579 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2580 | ||
2581 | /* | |
2582 | * Reset_work may be in the middle of resetting the device, wait for its | |
2583 | * completion. | |
2584 | */ | |
2585 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2586 | msleep(1); | |
2587 | ||
2588 | vmxnet3_quiesce_dev(adapter); | |
2589 | ||
09c5088e SB |
2590 | vmxnet3_rq_destroy_all(adapter); |
2591 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2592 | |
2593 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2594 | ||
2595 | ||
2596 | return 0; | |
2597 | } | |
2598 | ||
2599 | ||
2600 | void | |
2601 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2602 | { | |
09c5088e SB |
2603 | int i; |
2604 | ||
d1a890fa SB |
2605 | /* |
2606 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2607 | * vmxnet3_close() will deadlock. | |
2608 | */ | |
2609 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2610 | ||
2611 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
09c5088e SB |
2612 | for (i = 0; i < adapter->num_rx_queues; i++) |
2613 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2614 | dev_close(adapter->netdev); |
2615 | } | |
2616 | ||
2617 | ||
2618 | static int | |
2619 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2620 | { | |
2621 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2622 | int err = 0; | |
2623 | ||
2624 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2625 | return -EINVAL; | |
2626 | ||
d1a890fa SB |
2627 | netdev->mtu = new_mtu; |
2628 | ||
2629 | /* | |
2630 | * Reset_work may be in the middle of resetting the device, wait for its | |
2631 | * completion. | |
2632 | */ | |
2633 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2634 | msleep(1); | |
2635 | ||
2636 | if (netif_running(netdev)) { | |
2637 | vmxnet3_quiesce_dev(adapter); | |
2638 | vmxnet3_reset_dev(adapter); | |
2639 | ||
2640 | /* we need to re-create the rx queue based on the new mtu */ | |
09c5088e | 2641 | vmxnet3_rq_destroy_all(adapter); |
d1a890fa | 2642 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e | 2643 | err = vmxnet3_rq_create_all(adapter); |
d1a890fa | 2644 | if (err) { |
09c5088e | 2645 | printk(KERN_ERR "%s: failed to re-create rx queues," |
d1a890fa SB |
2646 | " error %d. Closing it.\n", netdev->name, err); |
2647 | goto out; | |
2648 | } | |
2649 | ||
2650 | err = vmxnet3_activate_dev(adapter); | |
2651 | if (err) { | |
2652 | printk(KERN_ERR "%s: failed to re-activate, error %d. " | |
2653 | "Closing it\n", netdev->name, err); | |
2654 | goto out; | |
2655 | } | |
2656 | } | |
2657 | ||
2658 | out: | |
2659 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2660 | if (err) | |
2661 | vmxnet3_force_close(adapter); | |
2662 | ||
2663 | return err; | |
2664 | } | |
2665 | ||
2666 | ||
2667 | static void | |
2668 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2669 | { | |
2670 | struct net_device *netdev = adapter->netdev; | |
2671 | ||
a0d2730c MM |
2672 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
2673 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX | | |
72e85c45 JG |
2674 | NETIF_F_HW_VLAN_RX | NETIF_F_TSO | NETIF_F_TSO6 | |
2675 | NETIF_F_LRO; | |
a0d2730c | 2676 | if (dma64) |
ebbf9295 | 2677 | netdev->hw_features |= NETIF_F_HIGHDMA; |
72e85c45 JG |
2678 | netdev->vlan_features = netdev->hw_features & |
2679 | ~(NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX); | |
2680 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_FILTER; | |
d1a890fa | 2681 | |
a0d2730c MM |
2682 | netdev_info(adapter->netdev, |
2683 | "features: sg csum vlan jf tso tsoIPv6 lro%s\n", | |
2684 | dma64 ? " highDMA" : ""); | |
d1a890fa SB |
2685 | } |
2686 | ||
2687 | ||
2688 | static void | |
2689 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2690 | { | |
2691 | u32 tmp; | |
2692 | ||
2693 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2694 | *(u32 *)mac = tmp; | |
2695 | ||
2696 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2697 | mac[4] = tmp & 0xff; | |
2698 | mac[5] = (tmp >> 8) & 0xff; | |
2699 | } | |
2700 | ||
09c5088e SB |
2701 | #ifdef CONFIG_PCI_MSI |
2702 | ||
2703 | /* | |
2704 | * Enable MSIx vectors. | |
2705 | * Returns : | |
2706 | * 0 on successful enabling of required vectors, | |
25985edc | 2707 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required |
09c5088e SB |
2708 | * could be enabled. |
2709 | * number of vectors which can be enabled otherwise (this number is smaller | |
2710 | * than VMXNET3_LINUX_MIN_MSIX_VECT) | |
2711 | */ | |
2712 | ||
2713 | static int | |
2714 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, | |
2715 | int vectors) | |
2716 | { | |
2717 | int err = 0, vector_threshold; | |
2718 | vector_threshold = VMXNET3_LINUX_MIN_MSIX_VECT; | |
2719 | ||
2720 | while (vectors >= vector_threshold) { | |
2721 | err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries, | |
2722 | vectors); | |
2723 | if (!err) { | |
2724 | adapter->intr.num_intrs = vectors; | |
2725 | return 0; | |
2726 | } else if (err < 0) { | |
4c1dc80a SB |
2727 | netdev_err(adapter->netdev, |
2728 | "Failed to enable MSI-X, error: %d\n", err); | |
09c5088e SB |
2729 | vectors = 0; |
2730 | } else if (err < vector_threshold) { | |
2731 | break; | |
2732 | } else { | |
2733 | /* If fails to enable required number of MSI-x vectors | |
7e96fbf2 | 2734 | * try enabling minimum number of vectors required. |
09c5088e | 2735 | */ |
4c1dc80a SB |
2736 | netdev_err(adapter->netdev, |
2737 | "Failed to enable %d MSI-X, trying %d instead\n", | |
2738 | vectors, vector_threshold); | |
09c5088e | 2739 | vectors = vector_threshold; |
09c5088e SB |
2740 | } |
2741 | } | |
2742 | ||
4c1dc80a SB |
2743 | netdev_info(adapter->netdev, |
2744 | "Number of MSI-X interrupts which can be allocated are lower than min threshold required.\n"); | |
09c5088e SB |
2745 | return err; |
2746 | } | |
2747 | ||
2748 | ||
2749 | #endif /* CONFIG_PCI_MSI */ | |
d1a890fa SB |
2750 | |
2751 | static void | |
2752 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2753 | { | |
2754 | u32 cfg; | |
e328d410 | 2755 | unsigned long flags; |
d1a890fa SB |
2756 | |
2757 | /* intr settings */ | |
e328d410 | 2758 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2759 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2760 | VMXNET3_CMD_GET_CONF_INTR); | |
2761 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
e328d410 | 2762 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2763 | adapter->intr.type = cfg & 0x3; |
2764 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2765 | ||
2766 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
0bdc0d70 SB |
2767 | adapter->intr.type = VMXNET3_IT_MSIX; |
2768 | } | |
d1a890fa | 2769 | |
8f7e524c | 2770 | #ifdef CONFIG_PCI_MSI |
0bdc0d70 | 2771 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
2772 | int vector, err = 0; |
2773 | ||
2774 | adapter->intr.num_intrs = (adapter->share_intr == | |
2775 | VMXNET3_INTR_TXSHARE) ? 1 : | |
2776 | adapter->num_tx_queues; | |
2777 | adapter->intr.num_intrs += (adapter->share_intr == | |
2778 | VMXNET3_INTR_BUDDYSHARE) ? 0 : | |
2779 | adapter->num_rx_queues; | |
2780 | adapter->intr.num_intrs += 1; /* for link event */ | |
2781 | ||
2782 | adapter->intr.num_intrs = (adapter->intr.num_intrs > | |
2783 | VMXNET3_LINUX_MIN_MSIX_VECT | |
2784 | ? adapter->intr.num_intrs : | |
2785 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
2786 | ||
2787 | for (vector = 0; vector < adapter->intr.num_intrs; vector++) | |
2788 | adapter->intr.msix_entries[vector].entry = vector; | |
2789 | ||
2790 | err = vmxnet3_acquire_msix_vectors(adapter, | |
2791 | adapter->intr.num_intrs); | |
2792 | /* If we cannot allocate one MSIx vector per queue | |
2793 | * then limit the number of rx queues to 1 | |
2794 | */ | |
2795 | if (err == VMXNET3_LINUX_MIN_MSIX_VECT) { | |
2796 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE | |
7e96fbf2 | 2797 | || adapter->num_rx_queues != 1) { |
09c5088e SB |
2798 | adapter->share_intr = VMXNET3_INTR_TXSHARE; |
2799 | printk(KERN_ERR "Number of rx queues : 1\n"); | |
2800 | adapter->num_rx_queues = 1; | |
2801 | adapter->intr.num_intrs = | |
2802 | VMXNET3_LINUX_MIN_MSIX_VECT; | |
2803 | } | |
d1a890fa SB |
2804 | return; |
2805 | } | |
09c5088e SB |
2806 | if (!err) |
2807 | return; | |
2808 | ||
2809 | /* If we cannot allocate MSIx vectors use only one rx queue */ | |
4c1dc80a SB |
2810 | netdev_info(adapter->netdev, |
2811 | "Failed to enable MSI-X, error %d . Limiting #rx queues to 1, try MSI.\n", | |
2812 | err); | |
09c5088e | 2813 | |
0bdc0d70 SB |
2814 | adapter->intr.type = VMXNET3_IT_MSI; |
2815 | } | |
d1a890fa | 2816 | |
0bdc0d70 SB |
2817 | if (adapter->intr.type == VMXNET3_IT_MSI) { |
2818 | int err; | |
d1a890fa SB |
2819 | err = pci_enable_msi(adapter->pdev); |
2820 | if (!err) { | |
09c5088e | 2821 | adapter->num_rx_queues = 1; |
d1a890fa | 2822 | adapter->intr.num_intrs = 1; |
d1a890fa SB |
2823 | return; |
2824 | } | |
2825 | } | |
0bdc0d70 | 2826 | #endif /* CONFIG_PCI_MSI */ |
d1a890fa | 2827 | |
09c5088e SB |
2828 | adapter->num_rx_queues = 1; |
2829 | printk(KERN_INFO "Using INTx interrupt, #Rx queues: 1.\n"); | |
d1a890fa SB |
2830 | adapter->intr.type = VMXNET3_IT_INTX; |
2831 | ||
2832 | /* INT-X related setting */ | |
2833 | adapter->intr.num_intrs = 1; | |
2834 | } | |
2835 | ||
2836 | ||
2837 | static void | |
2838 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
2839 | { | |
2840 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
2841 | pci_disable_msix(adapter->pdev); | |
2842 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
2843 | pci_disable_msi(adapter->pdev); | |
2844 | else | |
2845 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
2846 | } | |
2847 | ||
2848 | ||
2849 | static void | |
2850 | vmxnet3_tx_timeout(struct net_device *netdev) | |
2851 | { | |
2852 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2853 | adapter->tx_timeout_count++; | |
2854 | ||
2855 | printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name); | |
2856 | schedule_work(&adapter->work); | |
09c5088e | 2857 | netif_wake_queue(adapter->netdev); |
d1a890fa SB |
2858 | } |
2859 | ||
2860 | ||
2861 | static void | |
2862 | vmxnet3_reset_work(struct work_struct *data) | |
2863 | { | |
2864 | struct vmxnet3_adapter *adapter; | |
2865 | ||
2866 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
2867 | ||
2868 | /* if another thread is resetting the device, no need to proceed */ | |
2869 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2870 | return; | |
2871 | ||
2872 | /* if the device is closed, we must leave it alone */ | |
d9a5f210 | 2873 | rtnl_lock(); |
d1a890fa SB |
2874 | if (netif_running(adapter->netdev)) { |
2875 | printk(KERN_INFO "%s: resetting\n", adapter->netdev->name); | |
2876 | vmxnet3_quiesce_dev(adapter); | |
2877 | vmxnet3_reset_dev(adapter); | |
2878 | vmxnet3_activate_dev(adapter); | |
2879 | } else { | |
2880 | printk(KERN_INFO "%s: already closed\n", adapter->netdev->name); | |
2881 | } | |
d9a5f210 | 2882 | rtnl_unlock(); |
d1a890fa SB |
2883 | |
2884 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2885 | } | |
2886 | ||
2887 | ||
3a4751a3 | 2888 | static int |
d1a890fa SB |
2889 | vmxnet3_probe_device(struct pci_dev *pdev, |
2890 | const struct pci_device_id *id) | |
2891 | { | |
2892 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
2893 | .ndo_open = vmxnet3_open, | |
2894 | .ndo_stop = vmxnet3_close, | |
2895 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
2896 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
2897 | .ndo_change_mtu = vmxnet3_change_mtu, | |
a0d2730c | 2898 | .ndo_set_features = vmxnet3_set_features, |
95305f6c | 2899 | .ndo_get_stats64 = vmxnet3_get_stats64, |
d1a890fa | 2900 | .ndo_tx_timeout = vmxnet3_tx_timeout, |
afc4b13d | 2901 | .ndo_set_rx_mode = vmxnet3_set_mc, |
d1a890fa SB |
2902 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, |
2903 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
2904 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2905 | .ndo_poll_controller = vmxnet3_netpoll, | |
2906 | #endif | |
2907 | }; | |
2908 | int err; | |
2909 | bool dma64 = false; /* stupid gcc */ | |
2910 | u32 ver; | |
2911 | struct net_device *netdev; | |
2912 | struct vmxnet3_adapter *adapter; | |
2913 | u8 mac[ETH_ALEN]; | |
09c5088e SB |
2914 | int size; |
2915 | int num_tx_queues; | |
2916 | int num_rx_queues; | |
2917 | ||
e154b639 SB |
2918 | if (!pci_msi_enabled()) |
2919 | enable_mq = 0; | |
2920 | ||
09c5088e SB |
2921 | #ifdef VMXNET3_RSS |
2922 | if (enable_mq) | |
2923 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
2924 | (int)num_online_cpus()); | |
2925 | else | |
2926 | #endif | |
2927 | num_rx_queues = 1; | |
eebb02b1 | 2928 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
09c5088e SB |
2929 | |
2930 | if (enable_mq) | |
2931 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
2932 | (int)num_online_cpus()); | |
2933 | else | |
2934 | num_tx_queues = 1; | |
2935 | ||
eebb02b1 | 2936 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); |
09c5088e SB |
2937 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), |
2938 | max(num_tx_queues, num_rx_queues)); | |
2939 | printk(KERN_INFO "# of Tx queues : %d, # of Rx queues : %d\n", | |
2940 | num_tx_queues, num_rx_queues); | |
d1a890fa | 2941 | |
41de8d4c | 2942 | if (!netdev) |
d1a890fa | 2943 | return -ENOMEM; |
d1a890fa SB |
2944 | |
2945 | pci_set_drvdata(pdev, netdev); | |
2946 | adapter = netdev_priv(netdev); | |
2947 | adapter->netdev = netdev; | |
2948 | adapter->pdev = pdev; | |
2949 | ||
83d0feff | 2950 | spin_lock_init(&adapter->cmd_lock); |
d1a890fa | 2951 | adapter->shared = pci_alloc_consistent(adapter->pdev, |
96800ee7 | 2952 | sizeof(struct Vmxnet3_DriverShared), |
2953 | &adapter->shared_pa); | |
d1a890fa SB |
2954 | if (!adapter->shared) { |
2955 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
96800ee7 | 2956 | pci_name(pdev)); |
d1a890fa SB |
2957 | err = -ENOMEM; |
2958 | goto err_alloc_shared; | |
2959 | } | |
2960 | ||
09c5088e SB |
2961 | adapter->num_rx_queues = num_rx_queues; |
2962 | adapter->num_tx_queues = num_tx_queues; | |
2963 | ||
2964 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
2965 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
2966 | adapter->tqd_start = pci_alloc_consistent(adapter->pdev, size, | |
96800ee7 | 2967 | &adapter->queue_desc_pa); |
d1a890fa SB |
2968 | |
2969 | if (!adapter->tqd_start) { | |
2970 | printk(KERN_ERR "Failed to allocate memory for %s\n", | |
96800ee7 | 2971 | pci_name(pdev)); |
d1a890fa SB |
2972 | err = -ENOMEM; |
2973 | goto err_alloc_queue_desc; | |
2974 | } | |
09c5088e | 2975 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + |
96800ee7 | 2976 | adapter->num_tx_queues); |
d1a890fa SB |
2977 | |
2978 | adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL); | |
2979 | if (adapter->pm_conf == NULL) { | |
d1a890fa SB |
2980 | err = -ENOMEM; |
2981 | goto err_alloc_pm; | |
2982 | } | |
2983 | ||
09c5088e SB |
2984 | #ifdef VMXNET3_RSS |
2985 | ||
2986 | adapter->rss_conf = kmalloc(sizeof(struct UPT1_RSSConf), GFP_KERNEL); | |
2987 | if (adapter->rss_conf == NULL) { | |
09c5088e SB |
2988 | err = -ENOMEM; |
2989 | goto err_alloc_rss; | |
2990 | } | |
2991 | #endif /* VMXNET3_RSS */ | |
2992 | ||
d1a890fa SB |
2993 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); |
2994 | if (err < 0) | |
2995 | goto err_alloc_pci; | |
2996 | ||
2997 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
2998 | if (ver & 1) { | |
2999 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
3000 | } else { | |
3001 | printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter" | |
3002 | " %s\n", ver, pci_name(pdev)); | |
3003 | err = -EBUSY; | |
3004 | goto err_ver; | |
3005 | } | |
3006 | ||
3007 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3008 | if (ver & 1) { | |
3009 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3010 | } else { | |
3011 | printk(KERN_ERR "Incompatible upt version (0x%x) for " | |
3012 | "adapter %s\n", ver, pci_name(pdev)); | |
3013 | err = -EBUSY; | |
3014 | goto err_ver; | |
3015 | } | |
3016 | ||
e101e7dd | 3017 | SET_NETDEV_DEV(netdev, &pdev->dev); |
d1a890fa SB |
3018 | vmxnet3_declare_features(adapter, dma64); |
3019 | ||
3020 | adapter->dev_number = atomic_read(&devices_found); | |
09c5088e | 3021 | |
96800ee7 | 3022 | adapter->share_intr = irq_share_mode; |
09c5088e SB |
3023 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE && |
3024 | adapter->num_tx_queues != adapter->num_rx_queues) | |
3025 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; | |
3026 | ||
d1a890fa SB |
3027 | vmxnet3_alloc_intr_resources(adapter); |
3028 | ||
09c5088e SB |
3029 | #ifdef VMXNET3_RSS |
3030 | if (adapter->num_rx_queues > 1 && | |
3031 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3032 | adapter->rss = true; | |
3033 | printk(KERN_INFO "RSS is enabled.\n"); | |
3034 | } else { | |
3035 | adapter->rss = false; | |
3036 | } | |
3037 | #endif | |
3038 | ||
d1a890fa SB |
3039 | vmxnet3_read_mac_addr(adapter, mac); |
3040 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3041 | ||
3042 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
d1a890fa | 3043 | vmxnet3_set_ethtool_ops(netdev); |
09c5088e | 3044 | netdev->watchdog_timeo = 5 * HZ; |
d1a890fa SB |
3045 | |
3046 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
e3bc4ffb | 3047 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); |
d1a890fa | 3048 | |
09c5088e SB |
3049 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
3050 | int i; | |
3051 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3052 | netif_napi_add(adapter->netdev, | |
3053 | &adapter->rx_queue[i].napi, | |
3054 | vmxnet3_poll_rx_only, 64); | |
3055 | } | |
3056 | } else { | |
3057 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3058 | vmxnet3_poll, 64); | |
3059 | } | |
3060 | ||
3061 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3062 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3063 | ||
d1a890fa SB |
3064 | err = register_netdev(netdev); |
3065 | ||
3066 | if (err) { | |
3067 | printk(KERN_ERR "Failed to register adapter %s\n", | |
96800ee7 | 3068 | pci_name(pdev)); |
d1a890fa SB |
3069 | goto err_register; |
3070 | } | |
3071 | ||
4a1745fc | 3072 | vmxnet3_check_link(adapter, false); |
d1a890fa SB |
3073 | atomic_inc(&devices_found); |
3074 | return 0; | |
3075 | ||
3076 | err_register: | |
3077 | vmxnet3_free_intr_resources(adapter); | |
3078 | err_ver: | |
3079 | vmxnet3_free_pci_resources(adapter); | |
3080 | err_alloc_pci: | |
09c5088e SB |
3081 | #ifdef VMXNET3_RSS |
3082 | kfree(adapter->rss_conf); | |
3083 | err_alloc_rss: | |
3084 | #endif | |
d1a890fa SB |
3085 | kfree(adapter->pm_conf); |
3086 | err_alloc_pm: | |
09c5088e SB |
3087 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, |
3088 | adapter->queue_desc_pa); | |
d1a890fa SB |
3089 | err_alloc_queue_desc: |
3090 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), | |
3091 | adapter->shared, adapter->shared_pa); | |
3092 | err_alloc_shared: | |
3093 | pci_set_drvdata(pdev, NULL); | |
3094 | free_netdev(netdev); | |
3095 | return err; | |
3096 | } | |
3097 | ||
3098 | ||
3a4751a3 | 3099 | static void |
d1a890fa SB |
3100 | vmxnet3_remove_device(struct pci_dev *pdev) |
3101 | { | |
3102 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3103 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
09c5088e SB |
3104 | int size = 0; |
3105 | int num_rx_queues; | |
3106 | ||
3107 | #ifdef VMXNET3_RSS | |
3108 | if (enable_mq) | |
3109 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3110 | (int)num_online_cpus()); | |
3111 | else | |
3112 | #endif | |
3113 | num_rx_queues = 1; | |
eebb02b1 | 3114 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
d1a890fa | 3115 | |
23f333a2 | 3116 | cancel_work_sync(&adapter->work); |
d1a890fa SB |
3117 | |
3118 | unregister_netdev(netdev); | |
3119 | ||
3120 | vmxnet3_free_intr_resources(adapter); | |
3121 | vmxnet3_free_pci_resources(adapter); | |
09c5088e SB |
3122 | #ifdef VMXNET3_RSS |
3123 | kfree(adapter->rss_conf); | |
3124 | #endif | |
d1a890fa | 3125 | kfree(adapter->pm_conf); |
09c5088e SB |
3126 | |
3127 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3128 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
3129 | pci_free_consistent(adapter->pdev, size, adapter->tqd_start, | |
3130 | adapter->queue_desc_pa); | |
d1a890fa SB |
3131 | pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared), |
3132 | adapter->shared, adapter->shared_pa); | |
3133 | free_netdev(netdev); | |
3134 | } | |
3135 | ||
3136 | ||
3137 | #ifdef CONFIG_PM | |
3138 | ||
3139 | static int | |
3140 | vmxnet3_suspend(struct device *device) | |
3141 | { | |
3142 | struct pci_dev *pdev = to_pci_dev(device); | |
3143 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3144 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3145 | struct Vmxnet3_PMConf *pmConf; | |
3146 | struct ethhdr *ehdr; | |
3147 | struct arphdr *ahdr; | |
3148 | u8 *arpreq; | |
3149 | struct in_device *in_dev; | |
3150 | struct in_ifaddr *ifa; | |
83d0feff | 3151 | unsigned long flags; |
d1a890fa SB |
3152 | int i = 0; |
3153 | ||
3154 | if (!netif_running(netdev)) | |
3155 | return 0; | |
3156 | ||
51956cd6 SB |
3157 | for (i = 0; i < adapter->num_rx_queues; i++) |
3158 | napi_disable(&adapter->rx_queue[i].napi); | |
3159 | ||
d1a890fa SB |
3160 | vmxnet3_disable_all_intrs(adapter); |
3161 | vmxnet3_free_irqs(adapter); | |
3162 | vmxnet3_free_intr_resources(adapter); | |
3163 | ||
3164 | netif_device_detach(netdev); | |
09c5088e | 3165 | netif_tx_stop_all_queues(netdev); |
d1a890fa SB |
3166 | |
3167 | /* Create wake-up filters. */ | |
3168 | pmConf = adapter->pm_conf; | |
3169 | memset(pmConf, 0, sizeof(*pmConf)); | |
3170 | ||
3171 | if (adapter->wol & WAKE_UCAST) { | |
3172 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3173 | pmConf->filters[i].maskSize = 1; | |
3174 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3175 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3176 | ||
3843e515 | 3177 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3178 | i++; |
3179 | } | |
3180 | ||
3181 | if (adapter->wol & WAKE_ARP) { | |
3182 | in_dev = in_dev_get(netdev); | |
3183 | if (!in_dev) | |
3184 | goto skip_arp; | |
3185 | ||
3186 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
3187 | if (!ifa) | |
3188 | goto skip_arp; | |
3189 | ||
3190 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3191 | sizeof(struct arphdr) + /* ARP header */ | |
3192 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3193 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3194 | pmConf->filters[i].maskSize = | |
3195 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3196 | ||
3197 | /* ETH_P_ARP in Ethernet header. */ | |
3198 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3199 | ehdr->h_proto = htons(ETH_P_ARP); | |
3200 | ||
3201 | /* ARPOP_REQUEST in ARP header. */ | |
3202 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3203 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3204 | arpreq = (u8 *)(ahdr + 1); | |
3205 | ||
3206 | /* The Unicast IPv4 address in 'tip' field. */ | |
3207 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
3208 | *(u32 *)arpreq = ifa->ifa_address; | |
3209 | ||
3210 | /* The mask for the relevant bits. */ | |
3211 | pmConf->filters[i].mask[0] = 0x00; | |
3212 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3213 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3214 | pmConf->filters[i].mask[3] = 0x00; | |
3215 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3216 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
3217 | in_dev_put(in_dev); | |
3218 | ||
3843e515 | 3219 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3220 | i++; |
3221 | } | |
3222 | ||
3223 | skip_arp: | |
3224 | if (adapter->wol & WAKE_MAGIC) | |
3843e515 | 3225 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; |
d1a890fa SB |
3226 | |
3227 | pmConf->numFilters = i; | |
3228 | ||
115924b6 SB |
3229 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3230 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3231 | *pmConf)); | |
3232 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( | |
3233 | pmConf)); | |
d1a890fa | 3234 | |
83d0feff | 3235 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3236 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3237 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3238 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3239 | |
3240 | pci_save_state(pdev); | |
3241 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3242 | adapter->wol); | |
3243 | pci_disable_device(pdev); | |
3244 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3245 | ||
3246 | return 0; | |
3247 | } | |
3248 | ||
3249 | ||
3250 | static int | |
3251 | vmxnet3_resume(struct device *device) | |
3252 | { | |
51956cd6 | 3253 | int err, i = 0; |
83d0feff | 3254 | unsigned long flags; |
d1a890fa SB |
3255 | struct pci_dev *pdev = to_pci_dev(device); |
3256 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3257 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3258 | struct Vmxnet3_PMConf *pmConf; | |
3259 | ||
3260 | if (!netif_running(netdev)) | |
3261 | return 0; | |
3262 | ||
3263 | /* Destroy wake-up filters. */ | |
3264 | pmConf = adapter->pm_conf; | |
3265 | memset(pmConf, 0, sizeof(*pmConf)); | |
3266 | ||
115924b6 SB |
3267 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3268 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3269 | *pmConf)); | |
0561cf3d | 3270 | adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( |
115924b6 | 3271 | pmConf)); |
d1a890fa SB |
3272 | |
3273 | netif_device_attach(netdev); | |
3274 | pci_set_power_state(pdev, PCI_D0); | |
3275 | pci_restore_state(pdev); | |
3276 | err = pci_enable_device_mem(pdev); | |
3277 | if (err != 0) | |
3278 | return err; | |
3279 | ||
3280 | pci_enable_wake(pdev, PCI_D0, 0); | |
3281 | ||
83d0feff | 3282 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3283 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3284 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3285 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3286 | vmxnet3_alloc_intr_resources(adapter); |
3287 | vmxnet3_request_irqs(adapter); | |
51956cd6 SB |
3288 | for (i = 0; i < adapter->num_rx_queues; i++) |
3289 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
3290 | vmxnet3_enable_all_intrs(adapter); |
3291 | ||
3292 | return 0; | |
3293 | } | |
3294 | ||
47145210 | 3295 | static const struct dev_pm_ops vmxnet3_pm_ops = { |
d1a890fa SB |
3296 | .suspend = vmxnet3_suspend, |
3297 | .resume = vmxnet3_resume, | |
3298 | }; | |
3299 | #endif | |
3300 | ||
3301 | static struct pci_driver vmxnet3_driver = { | |
3302 | .name = vmxnet3_driver_name, | |
3303 | .id_table = vmxnet3_pciid_table, | |
3304 | .probe = vmxnet3_probe_device, | |
3a4751a3 | 3305 | .remove = vmxnet3_remove_device, |
d1a890fa SB |
3306 | #ifdef CONFIG_PM |
3307 | .driver.pm = &vmxnet3_pm_ops, | |
3308 | #endif | |
3309 | }; | |
3310 | ||
3311 | ||
3312 | static int __init | |
3313 | vmxnet3_init_module(void) | |
3314 | { | |
3315 | printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC, | |
3316 | VMXNET3_DRIVER_VERSION_REPORT); | |
3317 | return pci_register_driver(&vmxnet3_driver); | |
3318 | } | |
3319 | ||
3320 | module_init(vmxnet3_init_module); | |
3321 | ||
3322 | ||
3323 | static void | |
3324 | vmxnet3_exit_module(void) | |
3325 | { | |
3326 | pci_unregister_driver(&vmxnet3_driver); | |
3327 | } | |
3328 | ||
3329 | module_exit(vmxnet3_exit_module); | |
3330 | ||
3331 | MODULE_AUTHOR("VMware, Inc."); | |
3332 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3333 | MODULE_LICENSE("GPL v2"); | |
3334 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |