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d1a890fa SB |
1 | /* |
2 | * Linux driver for VMware's vmxnet3 ethernet NIC. | |
3 | * | |
190af10f | 4 | * Copyright (C) 2008-2016, VMware, Inc. All Rights Reserved. |
d1a890fa SB |
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 | * | |
190af10f | 23 | * Maintained by: pv-drivers@vmware.com |
d1a890fa SB |
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 | */ | |
9baa3c34 | 39 | static const struct pci_device_id 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 | ||
09c5088e | 46 | static int enable_mq = 1; |
d1a890fa | 47 | |
f9f25026 SB |
48 | static void |
49 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac); | |
50 | ||
d1a890fa SB |
51 | /* |
52 | * Enable/Disable the given intr | |
53 | */ | |
54 | static void | |
55 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
56 | { | |
57 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
58 | } | |
59 | ||
60 | ||
61 | static void | |
62 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
63 | { | |
64 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
65 | } | |
66 | ||
67 | ||
68 | /* | |
69 | * Enable/Disable all intrs used by the device | |
70 | */ | |
71 | static void | |
72 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
73 | { | |
74 | int i; | |
75 | ||
76 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
77 | vmxnet3_enable_intr(adapter, i); | |
6929fe8a RZ |
78 | adapter->shared->devRead.intrConf.intrCtrl &= |
79 | cpu_to_le32(~VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
80 | } |
81 | ||
82 | ||
83 | static void | |
84 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
85 | { | |
86 | int i; | |
87 | ||
6929fe8a RZ |
88 | adapter->shared->devRead.intrConf.intrCtrl |= |
89 | cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
90 | for (i = 0; i < adapter->intr.num_intrs; i++) |
91 | vmxnet3_disable_intr(adapter, i); | |
92 | } | |
93 | ||
94 | ||
95 | static void | |
96 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
97 | { | |
98 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
99 | } | |
100 | ||
101 | ||
102 | static bool | |
103 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
104 | { | |
09c5088e | 105 | return tq->stopped; |
d1a890fa SB |
106 | } |
107 | ||
108 | ||
109 | static void | |
110 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
111 | { | |
112 | tq->stopped = false; | |
09c5088e | 113 | netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue); |
d1a890fa SB |
114 | } |
115 | ||
116 | ||
117 | static void | |
118 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
119 | { | |
120 | tq->stopped = false; | |
09c5088e | 121 | netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
122 | } |
123 | ||
124 | ||
125 | static void | |
126 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
127 | { | |
128 | tq->stopped = true; | |
129 | tq->num_stop++; | |
09c5088e | 130 | netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
131 | } |
132 | ||
133 | ||
134 | /* | |
135 | * Check the link state. This may start or stop the tx queue. | |
136 | */ | |
137 | static void | |
4a1745fc | 138 | vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue) |
d1a890fa SB |
139 | { |
140 | u32 ret; | |
09c5088e | 141 | int i; |
83d0feff | 142 | unsigned long flags; |
d1a890fa | 143 | |
83d0feff | 144 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
145 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); |
146 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff SB |
147 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
148 | ||
d1a890fa SB |
149 | adapter->link_speed = ret >> 16; |
150 | if (ret & 1) { /* Link is up. */ | |
204a6e65 SH |
151 | netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n", |
152 | adapter->link_speed); | |
6cdd20c3 | 153 | netif_carrier_on(adapter->netdev); |
d1a890fa | 154 | |
09c5088e SB |
155 | if (affectTxQueue) { |
156 | for (i = 0; i < adapter->num_tx_queues; i++) | |
157 | vmxnet3_tq_start(&adapter->tx_queue[i], | |
158 | adapter); | |
159 | } | |
d1a890fa | 160 | } else { |
204a6e65 | 161 | netdev_info(adapter->netdev, "NIC Link is Down\n"); |
6cdd20c3 | 162 | netif_carrier_off(adapter->netdev); |
d1a890fa | 163 | |
09c5088e SB |
164 | if (affectTxQueue) { |
165 | for (i = 0; i < adapter->num_tx_queues; i++) | |
166 | vmxnet3_tq_stop(&adapter->tx_queue[i], adapter); | |
167 | } | |
d1a890fa SB |
168 | } |
169 | } | |
170 | ||
d1a890fa SB |
171 | static void |
172 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
173 | { | |
09c5088e | 174 | int i; |
e328d410 | 175 | unsigned long flags; |
115924b6 | 176 | u32 events = le32_to_cpu(adapter->shared->ecr); |
d1a890fa SB |
177 | if (!events) |
178 | return; | |
179 | ||
180 | vmxnet3_ack_events(adapter, events); | |
181 | ||
182 | /* Check if link state has changed */ | |
183 | if (events & VMXNET3_ECR_LINK) | |
4a1745fc | 184 | vmxnet3_check_link(adapter, true); |
d1a890fa SB |
185 | |
186 | /* Check if there is an error on xmit/recv queues */ | |
187 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
e328d410 | 188 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
189 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
190 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
e328d410 | 191 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 192 | |
09c5088e SB |
193 | for (i = 0; i < adapter->num_tx_queues; i++) |
194 | if (adapter->tqd_start[i].status.stopped) | |
195 | dev_err(&adapter->netdev->dev, | |
196 | "%s: tq[%d] error 0x%x\n", | |
197 | adapter->netdev->name, i, le32_to_cpu( | |
198 | adapter->tqd_start[i].status.error)); | |
199 | for (i = 0; i < adapter->num_rx_queues; i++) | |
200 | if (adapter->rqd_start[i].status.stopped) | |
201 | dev_err(&adapter->netdev->dev, | |
202 | "%s: rq[%d] error 0x%x\n", | |
203 | adapter->netdev->name, i, | |
204 | adapter->rqd_start[i].status.error); | |
d1a890fa SB |
205 | |
206 | schedule_work(&adapter->work); | |
207 | } | |
208 | } | |
209 | ||
115924b6 SB |
210 | #ifdef __BIG_ENDIAN_BITFIELD |
211 | /* | |
212 | * The device expects the bitfields in shared structures to be written in | |
213 | * little endian. When CPU is big endian, the following routines are used to | |
214 | * correctly read and write into ABI. | |
215 | * The general technique used here is : double word bitfields are defined in | |
216 | * opposite order for big endian architecture. Then before reading them in | |
217 | * driver the complete double word is translated using le32_to_cpu. Similarly | |
218 | * After the driver writes into bitfields, cpu_to_le32 is used to translate the | |
219 | * double words into required format. | |
220 | * In order to avoid touching bits in shared structure more than once, temporary | |
221 | * descriptors are used. These are passed as srcDesc to following functions. | |
222 | */ | |
223 | static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc, | |
224 | struct Vmxnet3_RxDesc *dstDesc) | |
225 | { | |
226 | u32 *src = (u32 *)srcDesc + 2; | |
227 | u32 *dst = (u32 *)dstDesc + 2; | |
228 | dstDesc->addr = le64_to_cpu(srcDesc->addr); | |
229 | *dst = le32_to_cpu(*src); | |
230 | dstDesc->ext1 = le32_to_cpu(srcDesc->ext1); | |
231 | } | |
232 | ||
233 | static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc, | |
234 | struct Vmxnet3_TxDesc *dstDesc) | |
235 | { | |
236 | int i; | |
237 | u32 *src = (u32 *)(srcDesc + 1); | |
238 | u32 *dst = (u32 *)(dstDesc + 1); | |
239 | ||
240 | /* Working backwards so that the gen bit is set at the end. */ | |
241 | for (i = 2; i > 0; i--) { | |
242 | src--; | |
243 | dst--; | |
244 | *dst = cpu_to_le32(*src); | |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc, | |
250 | struct Vmxnet3_RxCompDesc *dstDesc) | |
251 | { | |
252 | int i = 0; | |
253 | u32 *src = (u32 *)srcDesc; | |
254 | u32 *dst = (u32 *)dstDesc; | |
255 | for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) { | |
256 | *dst = le32_to_cpu(*src); | |
257 | src++; | |
258 | dst++; | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* Used to read bitfield values from double words. */ | |
264 | static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size) | |
265 | { | |
266 | u32 temp = le32_to_cpu(*bitfield); | |
267 | u32 mask = ((1 << size) - 1) << pos; | |
268 | temp &= mask; | |
269 | temp >>= pos; | |
270 | return temp; | |
271 | } | |
272 | ||
273 | ||
274 | ||
275 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
276 | ||
277 | #ifdef __BIG_ENDIAN_BITFIELD | |
278 | ||
279 | # define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \ | |
280 | txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \ | |
281 | VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE) | |
282 | # define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \ | |
283 | txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \ | |
284 | VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE) | |
285 | # define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \ | |
286 | VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \ | |
287 | VMXNET3_TCD_GEN_SIZE) | |
288 | # define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \ | |
289 | VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE) | |
290 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \ | |
291 | (dstrcd) = (tmp); \ | |
292 | vmxnet3_RxCompToCPU((rcd), (tmp)); \ | |
293 | } while (0) | |
294 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \ | |
295 | (dstrxd) = (tmp); \ | |
296 | vmxnet3_RxDescToCPU((rxd), (tmp)); \ | |
297 | } while (0) | |
298 | ||
299 | #else | |
300 | ||
301 | # define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen) | |
302 | # define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop) | |
303 | # define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen) | |
304 | # define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx) | |
305 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd) | |
306 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd) | |
307 | ||
308 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
309 | ||
d1a890fa SB |
310 | |
311 | static void | |
312 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
313 | struct pci_dev *pdev) | |
314 | { | |
315 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
b0eb57cb | 316 | dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len, |
d1a890fa SB |
317 | PCI_DMA_TODEVICE); |
318 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
b0eb57cb | 319 | dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len, |
d1a890fa SB |
320 | PCI_DMA_TODEVICE); |
321 | else | |
322 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
323 | ||
324 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
325 | } | |
326 | ||
327 | ||
328 | static int | |
329 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
330 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
331 | { | |
332 | struct sk_buff *skb; | |
333 | int entries = 0; | |
334 | ||
335 | /* no out of order completion */ | |
336 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
115924b6 | 337 | BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1); |
d1a890fa SB |
338 | |
339 | skb = tq->buf_info[eop_idx].skb; | |
340 | BUG_ON(skb == NULL); | |
341 | tq->buf_info[eop_idx].skb = NULL; | |
342 | ||
343 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
344 | ||
345 | while (tq->tx_ring.next2comp != eop_idx) { | |
346 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
347 | pdev); | |
348 | ||
349 | /* update next2comp w/o tx_lock. Since we are marking more, | |
350 | * instead of less, tx ring entries avail, the worst case is | |
351 | * that the tx routine incorrectly re-queues a pkt due to | |
352 | * insufficient tx ring entries. | |
353 | */ | |
354 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
355 | entries++; | |
356 | } | |
357 | ||
358 | dev_kfree_skb_any(skb); | |
359 | return entries; | |
360 | } | |
361 | ||
362 | ||
363 | static int | |
364 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
365 | struct vmxnet3_adapter *adapter) | |
366 | { | |
367 | int completed = 0; | |
368 | union Vmxnet3_GenericDesc *gdesc; | |
369 | ||
370 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
115924b6 | 371 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { |
f3002c13 | 372 | /* Prevent any &gdesc->tcd field from being (speculatively) |
373 | * read before (&gdesc->tcd)->gen is read. | |
374 | */ | |
375 | dma_rmb(); | |
376 | ||
115924b6 SB |
377 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( |
378 | &gdesc->tcd), tq, adapter->pdev, | |
379 | adapter); | |
d1a890fa SB |
380 | |
381 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
382 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
383 | } | |
384 | ||
385 | if (completed) { | |
386 | spin_lock(&tq->tx_lock); | |
387 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
388 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
389 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
390 | netif_carrier_ok(adapter->netdev))) { | |
391 | vmxnet3_tq_wake(tq, adapter); | |
392 | } | |
393 | spin_unlock(&tq->tx_lock); | |
394 | } | |
395 | return completed; | |
396 | } | |
397 | ||
398 | ||
399 | static void | |
400 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
401 | struct vmxnet3_adapter *adapter) | |
402 | { | |
403 | int i; | |
404 | ||
405 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
406 | struct vmxnet3_tx_buf_info *tbi; | |
d1a890fa SB |
407 | |
408 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
d1a890fa SB |
409 | |
410 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
411 | if (tbi->skb) { | |
412 | dev_kfree_skb_any(tbi->skb); | |
413 | tbi->skb = NULL; | |
414 | } | |
415 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
416 | } | |
417 | ||
418 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
419 | for (i = 0; i < tq->tx_ring.size; i++) { | |
420 | BUG_ON(tq->buf_info[i].skb != NULL || | |
421 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
422 | } | |
423 | ||
424 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
425 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
426 | ||
427 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
428 | tq->comp_ring.next2proc = 0; | |
429 | } | |
430 | ||
431 | ||
09c5088e | 432 | static void |
d1a890fa SB |
433 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, |
434 | struct vmxnet3_adapter *adapter) | |
435 | { | |
436 | if (tq->tx_ring.base) { | |
b0eb57cb AK |
437 | dma_free_coherent(&adapter->pdev->dev, tq->tx_ring.size * |
438 | sizeof(struct Vmxnet3_TxDesc), | |
439 | tq->tx_ring.base, tq->tx_ring.basePA); | |
d1a890fa SB |
440 | tq->tx_ring.base = NULL; |
441 | } | |
442 | if (tq->data_ring.base) { | |
3c8b3efc SK |
443 | dma_free_coherent(&adapter->pdev->dev, |
444 | tq->data_ring.size * tq->txdata_desc_size, | |
b0eb57cb | 445 | tq->data_ring.base, tq->data_ring.basePA); |
d1a890fa SB |
446 | tq->data_ring.base = NULL; |
447 | } | |
448 | if (tq->comp_ring.base) { | |
b0eb57cb AK |
449 | dma_free_coherent(&adapter->pdev->dev, tq->comp_ring.size * |
450 | sizeof(struct Vmxnet3_TxCompDesc), | |
451 | tq->comp_ring.base, tq->comp_ring.basePA); | |
d1a890fa SB |
452 | tq->comp_ring.base = NULL; |
453 | } | |
b0eb57cb AK |
454 | if (tq->buf_info) { |
455 | dma_free_coherent(&adapter->pdev->dev, | |
456 | tq->tx_ring.size * sizeof(tq->buf_info[0]), | |
457 | tq->buf_info, tq->buf_info_pa); | |
458 | tq->buf_info = NULL; | |
459 | } | |
d1a890fa SB |
460 | } |
461 | ||
462 | ||
09c5088e SB |
463 | /* Destroy all tx queues */ |
464 | void | |
465 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
466 | { | |
467 | int i; | |
468 | ||
469 | for (i = 0; i < adapter->num_tx_queues; i++) | |
470 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
471 | } | |
472 | ||
473 | ||
d1a890fa SB |
474 | static void |
475 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
476 | struct vmxnet3_adapter *adapter) | |
477 | { | |
478 | int i; | |
479 | ||
480 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
481 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
482 | sizeof(struct Vmxnet3_TxDesc)); | |
483 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
484 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
485 | ||
3c8b3efc SK |
486 | memset(tq->data_ring.base, 0, |
487 | tq->data_ring.size * tq->txdata_desc_size); | |
d1a890fa SB |
488 | |
489 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
490 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
491 | sizeof(struct Vmxnet3_TxCompDesc)); | |
492 | tq->comp_ring.next2proc = 0; | |
493 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
494 | ||
495 | /* reset the bookkeeping data */ | |
496 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
497 | for (i = 0; i < tq->tx_ring.size; i++) | |
498 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
499 | ||
500 | /* stats are not reset */ | |
501 | } | |
502 | ||
503 | ||
504 | static int | |
505 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
506 | struct vmxnet3_adapter *adapter) | |
507 | { | |
b0eb57cb AK |
508 | size_t sz; |
509 | ||
d1a890fa SB |
510 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || |
511 | tq->comp_ring.base || tq->buf_info); | |
512 | ||
b0eb57cb AK |
513 | tq->tx_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
514 | tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc), | |
515 | &tq->tx_ring.basePA, GFP_KERNEL); | |
d1a890fa | 516 | if (!tq->tx_ring.base) { |
204a6e65 | 517 | netdev_err(adapter->netdev, "failed to allocate tx ring\n"); |
d1a890fa SB |
518 | goto err; |
519 | } | |
520 | ||
b0eb57cb | 521 | tq->data_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
3c8b3efc | 522 | tq->data_ring.size * tq->txdata_desc_size, |
b0eb57cb | 523 | &tq->data_ring.basePA, GFP_KERNEL); |
d1a890fa | 524 | if (!tq->data_ring.base) { |
3c8b3efc | 525 | netdev_err(adapter->netdev, "failed to allocate tx data ring\n"); |
d1a890fa SB |
526 | goto err; |
527 | } | |
528 | ||
b0eb57cb AK |
529 | tq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
530 | tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc), | |
531 | &tq->comp_ring.basePA, GFP_KERNEL); | |
d1a890fa | 532 | if (!tq->comp_ring.base) { |
204a6e65 | 533 | netdev_err(adapter->netdev, "failed to allocate tx comp ring\n"); |
d1a890fa SB |
534 | goto err; |
535 | } | |
536 | ||
b0eb57cb | 537 | sz = tq->tx_ring.size * sizeof(tq->buf_info[0]); |
750afb08 LC |
538 | tq->buf_info = dma_alloc_coherent(&adapter->pdev->dev, sz, |
539 | &tq->buf_info_pa, 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) { | |
0d735f13 SH |
583 | rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev, |
584 | rbi->len, | |
585 | GFP_KERNEL); | |
d1a890fa SB |
586 | if (unlikely(rbi->skb == NULL)) { |
587 | rq->stats.rx_buf_alloc_failure++; | |
588 | break; | |
589 | } | |
d1a890fa | 590 | |
b0eb57cb AK |
591 | rbi->dma_addr = dma_map_single( |
592 | &adapter->pdev->dev, | |
d1a890fa SB |
593 | rbi->skb->data, rbi->len, |
594 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
595 | if (dma_mapping_error(&adapter->pdev->dev, |
596 | rbi->dma_addr)) { | |
597 | dev_kfree_skb_any(rbi->skb); | |
598 | rq->stats.rx_buf_alloc_failure++; | |
599 | break; | |
600 | } | |
d1a890fa SB |
601 | } else { |
602 | /* rx buffer skipped by the device */ | |
603 | } | |
604 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
605 | } else { | |
606 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
607 | rbi->len != PAGE_SIZE); | |
608 | ||
609 | if (rbi->page == NULL) { | |
610 | rbi->page = alloc_page(GFP_ATOMIC); | |
611 | if (unlikely(rbi->page == NULL)) { | |
612 | rq->stats.rx_buf_alloc_failure++; | |
613 | break; | |
614 | } | |
b0eb57cb AK |
615 | rbi->dma_addr = dma_map_page( |
616 | &adapter->pdev->dev, | |
d1a890fa SB |
617 | rbi->page, 0, PAGE_SIZE, |
618 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
619 | if (dma_mapping_error(&adapter->pdev->dev, |
620 | rbi->dma_addr)) { | |
621 | put_page(rbi->page); | |
622 | rq->stats.rx_buf_alloc_failure++; | |
623 | break; | |
624 | } | |
d1a890fa SB |
625 | } else { |
626 | /* rx buffers skipped by the device */ | |
627 | } | |
628 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
629 | } | |
630 | ||
115924b6 | 631 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); |
5318d809 | 632 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) |
115924b6 | 633 | | val | rbi->len); |
d1a890fa | 634 | |
5318d809 SB |
635 | /* Fill the last buffer but dont mark it ready, or else the |
636 | * device will think that the queue is full */ | |
637 | if (num_allocated == num_to_alloc) | |
638 | break; | |
639 | ||
640 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
d1a890fa SB |
641 | num_allocated++; |
642 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
643 | } | |
d1a890fa | 644 | |
fdcd79b9 | 645 | netdev_dbg(adapter->netdev, |
69b9a712 SH |
646 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n", |
647 | num_allocated, ring->next2fill, ring->next2comp); | |
d1a890fa SB |
648 | |
649 | /* so that the device can distinguish a full ring and an empty ring */ | |
650 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
651 | ||
652 | return num_allocated; | |
653 | } | |
654 | ||
655 | ||
656 | static void | |
657 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
658 | struct vmxnet3_rx_buf_info *rbi) | |
659 | { | |
660 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
661 | skb_shinfo(skb)->nr_frags; | |
662 | ||
663 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
664 | ||
0e0634d2 | 665 | __skb_frag_set_page(frag, rbi->page); |
d1a890fa | 666 | frag->page_offset = 0; |
9e903e08 ED |
667 | skb_frag_size_set(frag, rcd->len); |
668 | skb->data_len += rcd->len; | |
5e6c355c | 669 | skb->truesize += PAGE_SIZE; |
d1a890fa SB |
670 | skb_shinfo(skb)->nr_frags++; |
671 | } | |
672 | ||
673 | ||
5738a09d | 674 | static int |
d1a890fa SB |
675 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, |
676 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
677 | struct vmxnet3_adapter *adapter) | |
678 | { | |
679 | u32 dw2, len; | |
680 | unsigned long buf_offset; | |
681 | int i; | |
682 | union Vmxnet3_GenericDesc *gdesc; | |
683 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
684 | ||
685 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
686 | ||
687 | /* use the previous gen bit for the SOP desc */ | |
688 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
689 | ||
690 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
691 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
692 | ||
693 | /* no need to map the buffer if headers are copied */ | |
694 | if (ctx->copy_size) { | |
115924b6 | 695 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + |
d1a890fa | 696 | tq->tx_ring.next2fill * |
3c8b3efc | 697 | tq->txdata_desc_size); |
115924b6 | 698 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); |
d1a890fa SB |
699 | ctx->sop_txd->dword[3] = 0; |
700 | ||
701 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
702 | tbi->map_type = VMXNET3_MAP_NONE; | |
703 | ||
fdcd79b9 | 704 | netdev_dbg(adapter->netdev, |
f6965582 | 705 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
706 | tq->tx_ring.next2fill, |
707 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
d1a890fa SB |
708 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); |
709 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
710 | ||
711 | /* use the right gen for non-SOP desc */ | |
712 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
713 | } | |
714 | ||
715 | /* linear part can use multiple tx desc if it's big */ | |
716 | len = skb_headlen(skb) - ctx->copy_size; | |
717 | buf_offset = ctx->copy_size; | |
718 | while (len) { | |
719 | u32 buf_size; | |
720 | ||
1f4b1612 BD |
721 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { |
722 | buf_size = len; | |
723 | dw2 |= len; | |
724 | } else { | |
725 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
726 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
727 | } | |
d1a890fa SB |
728 | |
729 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
730 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
b0eb57cb | 731 | tbi->dma_addr = dma_map_single(&adapter->pdev->dev, |
d1a890fa SB |
732 | skb->data + buf_offset, buf_size, |
733 | PCI_DMA_TODEVICE); | |
5738a09d AK |
734 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) |
735 | return -EFAULT; | |
d1a890fa | 736 | |
1f4b1612 | 737 | tbi->len = buf_size; |
d1a890fa SB |
738 | |
739 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
740 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
741 | ||
115924b6 | 742 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
1f4b1612 | 743 | gdesc->dword[2] = cpu_to_le32(dw2); |
d1a890fa SB |
744 | gdesc->dword[3] = 0; |
745 | ||
fdcd79b9 | 746 | netdev_dbg(adapter->netdev, |
f6965582 | 747 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
748 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
749 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
750 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
751 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
752 | ||
753 | len -= buf_size; | |
754 | buf_offset += buf_size; | |
755 | } | |
756 | ||
757 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 758 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; |
a4d7e485 | 759 | u32 buf_size; |
d1a890fa | 760 | |
a4d7e485 ED |
761 | buf_offset = 0; |
762 | len = skb_frag_size(frag); | |
763 | while (len) { | |
764 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
765 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
766 | buf_size = len; | |
767 | dw2 |= len; | |
768 | } else { | |
769 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
770 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
771 | } | |
772 | tbi->map_type = VMXNET3_MAP_PAGE; | |
773 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
774 | buf_offset, buf_size, | |
775 | DMA_TO_DEVICE); | |
5738a09d AK |
776 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) |
777 | return -EFAULT; | |
d1a890fa | 778 | |
a4d7e485 | 779 | tbi->len = buf_size; |
d1a890fa | 780 | |
a4d7e485 ED |
781 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; |
782 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
d1a890fa | 783 | |
a4d7e485 ED |
784 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
785 | gdesc->dword[2] = cpu_to_le32(dw2); | |
786 | gdesc->dword[3] = 0; | |
d1a890fa | 787 | |
fdcd79b9 | 788 | netdev_dbg(adapter->netdev, |
8b429468 | 789 | "txd[%u]: 0x%llx %u %u\n", |
a4d7e485 ED |
790 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
791 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
792 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
793 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
794 | ||
795 | len -= buf_size; | |
796 | buf_offset += buf_size; | |
797 | } | |
d1a890fa SB |
798 | } |
799 | ||
800 | ctx->eop_txd = gdesc; | |
801 | ||
802 | /* set the last buf_info for the pkt */ | |
803 | tbi->skb = skb; | |
804 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
5738a09d AK |
805 | |
806 | return 0; | |
d1a890fa SB |
807 | } |
808 | ||
809 | ||
09c5088e SB |
810 | /* Init all tx queues */ |
811 | static void | |
812 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
813 | { | |
814 | int i; | |
815 | ||
816 | for (i = 0; i < adapter->num_tx_queues; i++) | |
817 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
818 | } | |
819 | ||
820 | ||
d1a890fa | 821 | /* |
cec05562 | 822 | * parse relevant protocol headers: |
d1a890fa SB |
823 | * For a tso pkt, relevant headers are L2/3/4 including options |
824 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
825 | * if it's a TCP/UDP pkt | |
826 | * | |
827 | * Returns: | |
828 | * -1: error happens during parsing | |
829 | * 0: protocol headers parsed, but too big to be copied | |
830 | * 1: protocol headers parsed and copied | |
831 | * | |
832 | * Other effects: | |
833 | * 1. related *ctx fields are updated. | |
834 | * 2. ctx->copy_size is # of bytes copied | |
cec05562 | 835 | * 3. the portion to be copied is guaranteed to be in the linear part |
d1a890fa SB |
836 | * |
837 | */ | |
838 | static int | |
cec05562 NH |
839 | vmxnet3_parse_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, |
840 | struct vmxnet3_tx_ctx *ctx, | |
841 | struct vmxnet3_adapter *adapter) | |
d1a890fa | 842 | { |
759c9359 | 843 | u8 protocol = 0; |
d1a890fa | 844 | |
0d0b1672 | 845 | if (ctx->mss) { /* TSO */ |
d1a890fa | 846 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); |
8bca5d1e | 847 | ctx->l4_hdr_size = tcp_hdrlen(skb); |
d1a890fa SB |
848 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; |
849 | } else { | |
d1a890fa | 850 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
0d0b1672 | 851 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); |
d1a890fa SB |
852 | |
853 | if (ctx->ipv4) { | |
8bca5d1e ED |
854 | const struct iphdr *iph = ip_hdr(skb); |
855 | ||
759c9359 SK |
856 | protocol = iph->protocol; |
857 | } else if (ctx->ipv6) { | |
858 | const struct ipv6hdr *ipv6h = ipv6_hdr(skb); | |
859 | ||
860 | protocol = ipv6h->nexthdr; | |
861 | } | |
862 | ||
863 | switch (protocol) { | |
864 | case IPPROTO_TCP: | |
865 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
866 | break; | |
867 | case IPPROTO_UDP: | |
868 | ctx->l4_hdr_size = sizeof(struct udphdr); | |
869 | break; | |
870 | default: | |
d1a890fa | 871 | ctx->l4_hdr_size = 0; |
759c9359 | 872 | break; |
d1a890fa | 873 | } |
759c9359 | 874 | |
b203262d NH |
875 | ctx->copy_size = min(ctx->eth_ip_hdr_size + |
876 | ctx->l4_hdr_size, skb->len); | |
d1a890fa SB |
877 | } else { |
878 | ctx->eth_ip_hdr_size = 0; | |
879 | ctx->l4_hdr_size = 0; | |
880 | /* copy as much as allowed */ | |
3c8b3efc SK |
881 | ctx->copy_size = min_t(unsigned int, |
882 | tq->txdata_desc_size, | |
883 | skb_headlen(skb)); | |
d1a890fa SB |
884 | } |
885 | ||
c41fcce9 SB |
886 | if (skb->len <= VMXNET3_HDR_COPY_SIZE) |
887 | ctx->copy_size = skb->len; | |
888 | ||
d1a890fa SB |
889 | /* make sure headers are accessible directly */ |
890 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
891 | goto err; | |
892 | } | |
893 | ||
3c8b3efc | 894 | if (unlikely(ctx->copy_size > tq->txdata_desc_size)) { |
d1a890fa SB |
895 | tq->stats.oversized_hdr++; |
896 | ctx->copy_size = 0; | |
897 | return 0; | |
898 | } | |
899 | ||
cec05562 NH |
900 | return 1; |
901 | err: | |
902 | return -1; | |
903 | } | |
904 | ||
905 | /* | |
906 | * copy relevant protocol headers to the transmit ring: | |
907 | * For a tso pkt, relevant headers are L2/3/4 including options | |
908 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
909 | * if it's a TCP/UDP pkt | |
910 | * | |
911 | * | |
912 | * Note that this requires that vmxnet3_parse_hdr be called first to set the | |
913 | * appropriate bits in ctx first | |
914 | */ | |
915 | static void | |
916 | vmxnet3_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
917 | struct vmxnet3_tx_ctx *ctx, | |
918 | struct vmxnet3_adapter *adapter) | |
919 | { | |
920 | struct Vmxnet3_TxDataDesc *tdd; | |
921 | ||
ff2e7d5d SK |
922 | tdd = (struct Vmxnet3_TxDataDesc *)((u8 *)tq->data_ring.base + |
923 | tq->tx_ring.next2fill * | |
924 | tq->txdata_desc_size); | |
d1a890fa SB |
925 | |
926 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
fdcd79b9 | 927 | netdev_dbg(adapter->netdev, |
f6965582 | 928 | "copy %u bytes to dataRing[%u]\n", |
d1a890fa | 929 | ctx->copy_size, tq->tx_ring.next2fill); |
d1a890fa SB |
930 | } |
931 | ||
932 | ||
933 | static void | |
934 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
935 | struct vmxnet3_tx_ctx *ctx) | |
936 | { | |
8bca5d1e ED |
937 | struct tcphdr *tcph = tcp_hdr(skb); |
938 | ||
d1a890fa | 939 | if (ctx->ipv4) { |
8bca5d1e ED |
940 | struct iphdr *iph = ip_hdr(skb); |
941 | ||
d1a890fa SB |
942 | iph->check = 0; |
943 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
944 | IPPROTO_TCP, 0); | |
759c9359 | 945 | } else if (ctx->ipv6) { |
8bca5d1e ED |
946 | struct ipv6hdr *iph = ipv6_hdr(skb); |
947 | ||
d1a890fa SB |
948 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, |
949 | IPPROTO_TCP, 0); | |
950 | } | |
951 | } | |
952 | ||
a4d7e485 ED |
953 | static int txd_estimate(const struct sk_buff *skb) |
954 | { | |
955 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
956 | int i; | |
957 | ||
958 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
959 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
960 | ||
961 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
962 | } | |
963 | return count; | |
964 | } | |
d1a890fa SB |
965 | |
966 | /* | |
967 | * Transmits a pkt thru a given tq | |
968 | * Returns: | |
969 | * NETDEV_TX_OK: descriptors are setup successfully | |
25985edc | 970 | * NETDEV_TX_OK: error occurred, the pkt is dropped |
d1a890fa SB |
971 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped |
972 | * | |
973 | * Side-effects: | |
974 | * 1. tx ring may be changed | |
975 | * 2. tq stats may be updated accordingly | |
976 | * 3. shared->txNumDeferred may be updated | |
977 | */ | |
978 | ||
979 | static int | |
980 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
981 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
982 | { | |
983 | int ret; | |
984 | u32 count; | |
7a4c003d RD |
985 | int num_pkts; |
986 | int tx_num_deferred; | |
d1a890fa SB |
987 | unsigned long flags; |
988 | struct vmxnet3_tx_ctx ctx; | |
989 | union Vmxnet3_GenericDesc *gdesc; | |
115924b6 SB |
990 | #ifdef __BIG_ENDIAN_BITFIELD |
991 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
992 | union Vmxnet3_GenericDesc tempTxDesc; | |
993 | #endif | |
d1a890fa | 994 | |
a4d7e485 | 995 | count = txd_estimate(skb); |
d1a890fa | 996 | |
72e85c45 | 997 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); |
759c9359 | 998 | ctx.ipv6 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IPV6)); |
d1a890fa SB |
999 | |
1000 | ctx.mss = skb_shinfo(skb)->gso_size; | |
1001 | if (ctx.mss) { | |
1002 | if (skb_header_cloned(skb)) { | |
1003 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
1004 | GFP_ATOMIC) != 0)) { | |
1005 | tq->stats.drop_tso++; | |
1006 | goto drop_pkt; | |
1007 | } | |
1008 | tq->stats.copy_skb_header++; | |
1009 | } | |
1010 | vmxnet3_prepare_tso(skb, &ctx); | |
1011 | } else { | |
1012 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
1013 | ||
1014 | /* non-tso pkts must not use more than | |
1015 | * VMXNET3_MAX_TXD_PER_PKT entries | |
1016 | */ | |
1017 | if (skb_linearize(skb) != 0) { | |
1018 | tq->stats.drop_too_many_frags++; | |
1019 | goto drop_pkt; | |
1020 | } | |
1021 | tq->stats.linearized++; | |
1022 | ||
1023 | /* recalculate the # of descriptors to use */ | |
1024 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
1025 | } | |
1026 | } | |
1027 | ||
cec05562 | 1028 | ret = vmxnet3_parse_hdr(skb, tq, &ctx, adapter); |
d1a890fa SB |
1029 | if (ret >= 0) { |
1030 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
1031 | /* hdrs parsed, check against other limits */ | |
1032 | if (ctx.mss) { | |
1033 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
1034 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
efc21d95 AB |
1035 | tq->stats.drop_oversized_hdr++; |
1036 | goto drop_pkt; | |
d1a890fa SB |
1037 | } |
1038 | } else { | |
1039 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1040 | if (unlikely(ctx.eth_ip_hdr_size + | |
1041 | skb->csum_offset > | |
1042 | VMXNET3_MAX_CSUM_OFFSET)) { | |
efc21d95 AB |
1043 | tq->stats.drop_oversized_hdr++; |
1044 | goto drop_pkt; | |
d1a890fa SB |
1045 | } |
1046 | } | |
1047 | } | |
1048 | } else { | |
1049 | tq->stats.drop_hdr_inspect_err++; | |
cec05562 | 1050 | goto drop_pkt; |
d1a890fa SB |
1051 | } |
1052 | ||
cec05562 NH |
1053 | spin_lock_irqsave(&tq->tx_lock, flags); |
1054 | ||
1055 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
1056 | tq->stats.tx_ring_full++; | |
1057 | netdev_dbg(adapter->netdev, | |
1058 | "tx queue stopped on %s, next2comp %u" | |
1059 | " next2fill %u\n", adapter->netdev->name, | |
1060 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
1061 | ||
1062 | vmxnet3_tq_stop(tq, adapter); | |
1063 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1064 | return NETDEV_TX_BUSY; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | vmxnet3_copy_hdr(skb, tq, &ctx, adapter); | |
1069 | ||
d1a890fa | 1070 | /* fill tx descs related to addr & len */ |
5738a09d AK |
1071 | if (vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter)) |
1072 | goto unlock_drop_pkt; | |
d1a890fa SB |
1073 | |
1074 | /* setup the EOP desc */ | |
115924b6 | 1075 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); |
d1a890fa SB |
1076 | |
1077 | /* setup the SOP desc */ | |
115924b6 SB |
1078 | #ifdef __BIG_ENDIAN_BITFIELD |
1079 | gdesc = &tempTxDesc; | |
1080 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1081 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1082 | #else | |
d1a890fa | 1083 | gdesc = ctx.sop_txd; |
115924b6 | 1084 | #endif |
7a4c003d | 1085 | tx_num_deferred = le32_to_cpu(tq->shared->txNumDeferred); |
d1a890fa SB |
1086 | if (ctx.mss) { |
1087 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1088 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1089 | gdesc->txd.msscof = ctx.mss; | |
7a4c003d | 1090 | num_pkts = (skb->len - gdesc->txd.hlen + ctx.mss - 1) / ctx.mss; |
d1a890fa SB |
1091 | } else { |
1092 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1093 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1094 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1095 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1096 | skb->csum_offset; | |
1097 | } else { | |
1098 | gdesc->txd.om = 0; | |
1099 | gdesc->txd.msscof = 0; | |
1100 | } | |
7a4c003d | 1101 | num_pkts = 1; |
d1a890fa | 1102 | } |
7a4c003d RD |
1103 | le32_add_cpu(&tq->shared->txNumDeferred, num_pkts); |
1104 | tx_num_deferred += num_pkts; | |
d1a890fa | 1105 | |
df8a39de | 1106 | if (skb_vlan_tag_present(skb)) { |
d1a890fa | 1107 | gdesc->txd.ti = 1; |
df8a39de | 1108 | gdesc->txd.tci = skb_vlan_tag_get(skb); |
d1a890fa SB |
1109 | } |
1110 | ||
f3002c13 | 1111 | /* Ensure that the write to (&gdesc->txd)->gen will be observed after |
1112 | * all other writes to &gdesc->txd. | |
1113 | */ | |
1114 | dma_wmb(); | |
1115 | ||
115924b6 SB |
1116 | /* finally flips the GEN bit of the SOP desc. */ |
1117 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1118 | VMXNET3_TXD_GEN); | |
1119 | #ifdef __BIG_ENDIAN_BITFIELD | |
1120 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1121 | * place. | |
1122 | */ | |
1123 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1124 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1125 | gdesc = ctx.sop_txd; | |
1126 | #endif | |
fdcd79b9 | 1127 | netdev_dbg(adapter->netdev, |
f6965582 | 1128 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", |
c2fd03a0 | 1129 | (u32)(ctx.sop_txd - |
115924b6 SB |
1130 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), |
1131 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
d1a890fa SB |
1132 | |
1133 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1134 | ||
7a4c003d | 1135 | if (tx_num_deferred >= le32_to_cpu(tq->shared->txThreshold)) { |
d1a890fa | 1136 | tq->shared->txNumDeferred = 0; |
09c5088e SB |
1137 | VMXNET3_WRITE_BAR0_REG(adapter, |
1138 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
d1a890fa SB |
1139 | tq->tx_ring.next2fill); |
1140 | } | |
d1a890fa SB |
1141 | |
1142 | return NETDEV_TX_OK; | |
1143 | ||
f955e141 DC |
1144 | unlock_drop_pkt: |
1145 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
d1a890fa SB |
1146 | drop_pkt: |
1147 | tq->stats.drop_total++; | |
b1b71817 | 1148 | dev_kfree_skb_any(skb); |
d1a890fa SB |
1149 | return NETDEV_TX_OK; |
1150 | } | |
1151 | ||
1152 | ||
1153 | static netdev_tx_t | |
1154 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1155 | { | |
1156 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1157 | |
96800ee7 | 1158 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); |
1159 | return vmxnet3_tq_xmit(skb, | |
1160 | &adapter->tx_queue[skb->queue_mapping], | |
1161 | adapter, netdev); | |
d1a890fa SB |
1162 | } |
1163 | ||
1164 | ||
1165 | static void | |
1166 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1167 | struct sk_buff *skb, | |
1168 | union Vmxnet3_GenericDesc *gdesc) | |
1169 | { | |
a0d2730c | 1170 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { |
f0d43780 SK |
1171 | if (gdesc->rcd.v4 && |
1172 | (le32_to_cpu(gdesc->dword[3]) & | |
1173 | VMXNET3_RCD_CSUM_OK) == VMXNET3_RCD_CSUM_OK) { | |
1174 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1175 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1176 | BUG_ON(gdesc->rcd.frg); | |
1177 | } else if (gdesc->rcd.v6 && (le32_to_cpu(gdesc->dword[3]) & | |
1178 | (1 << VMXNET3_RCD_TUC_SHIFT))) { | |
d1a890fa SB |
1179 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
1180 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
d1a890fa SB |
1181 | BUG_ON(gdesc->rcd.frg); |
1182 | } else { | |
1183 | if (gdesc->rcd.csum) { | |
1184 | skb->csum = htons(gdesc->rcd.csum); | |
1185 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1186 | } else { | |
bc8acf2c | 1187 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1188 | } |
1189 | } | |
1190 | } else { | |
bc8acf2c | 1191 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1192 | } |
1193 | } | |
1194 | ||
1195 | ||
1196 | static void | |
1197 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1198 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1199 | { | |
1200 | rq->stats.drop_err++; | |
1201 | if (!rcd->fcs) | |
1202 | rq->stats.drop_fcs++; | |
1203 | ||
1204 | rq->stats.drop_total++; | |
1205 | ||
1206 | /* | |
1207 | * We do not unmap and chain the rx buffer to the skb. | |
1208 | * We basically pretend this buffer is not used and will be recycled | |
1209 | * by vmxnet3_rq_alloc_rx_buf() | |
1210 | */ | |
1211 | ||
1212 | /* | |
1213 | * ctx->skb may be NULL if this is the first and the only one | |
1214 | * desc for the pkt | |
1215 | */ | |
1216 | if (ctx->skb) | |
1217 | dev_kfree_skb_irq(ctx->skb); | |
1218 | ||
1219 | ctx->skb = NULL; | |
1220 | } | |
1221 | ||
1222 | ||
45dac1d6 SB |
1223 | static u32 |
1224 | vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb, | |
1225 | union Vmxnet3_GenericDesc *gdesc) | |
1226 | { | |
1227 | u32 hlen, maplen; | |
1228 | union { | |
1229 | void *ptr; | |
1230 | struct ethhdr *eth; | |
65ec0bd1 | 1231 | struct vlan_ethhdr *veth; |
45dac1d6 SB |
1232 | struct iphdr *ipv4; |
1233 | struct ipv6hdr *ipv6; | |
1234 | struct tcphdr *tcp; | |
1235 | } hdr; | |
1236 | BUG_ON(gdesc->rcd.tcp == 0); | |
1237 | ||
1238 | maplen = skb_headlen(skb); | |
1239 | if (unlikely(sizeof(struct iphdr) + sizeof(struct tcphdr) > maplen)) | |
1240 | return 0; | |
1241 | ||
65ec0bd1 RD |
1242 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q) || |
1243 | skb->protocol == cpu_to_be16(ETH_P_8021AD)) | |
1244 | hlen = sizeof(struct vlan_ethhdr); | |
1245 | else | |
1246 | hlen = sizeof(struct ethhdr); | |
1247 | ||
45dac1d6 SB |
1248 | hdr.eth = eth_hdr(skb); |
1249 | if (gdesc->rcd.v4) { | |
65ec0bd1 RD |
1250 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IP) && |
1251 | hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IP)); | |
1252 | hdr.ptr += hlen; | |
45dac1d6 SB |
1253 | BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP); |
1254 | hlen = hdr.ipv4->ihl << 2; | |
1255 | hdr.ptr += hdr.ipv4->ihl << 2; | |
1256 | } else if (gdesc->rcd.v6) { | |
65ec0bd1 RD |
1257 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IPV6) && |
1258 | hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IPV6)); | |
1259 | hdr.ptr += hlen; | |
45dac1d6 SB |
1260 | /* Use an estimated value, since we also need to handle |
1261 | * TSO case. | |
1262 | */ | |
1263 | if (hdr.ipv6->nexthdr != IPPROTO_TCP) | |
1264 | return sizeof(struct ipv6hdr) + sizeof(struct tcphdr); | |
1265 | hlen = sizeof(struct ipv6hdr); | |
1266 | hdr.ptr += sizeof(struct ipv6hdr); | |
1267 | } else { | |
1268 | /* Non-IP pkt, dont estimate header length */ | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | if (hlen + sizeof(struct tcphdr) > maplen) | |
1273 | return 0; | |
1274 | ||
1275 | return (hlen + (hdr.tcp->doff << 2)); | |
1276 | } | |
1277 | ||
d1a890fa SB |
1278 | static int |
1279 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1280 | struct vmxnet3_adapter *adapter, int quota) | |
1281 | { | |
215faf9c JP |
1282 | static const u32 rxprod_reg[2] = { |
1283 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1284 | }; | |
0769636c | 1285 | u32 num_pkts = 0; |
5318d809 | 1286 | bool skip_page_frags = false; |
d1a890fa SB |
1287 | struct Vmxnet3_RxCompDesc *rcd; |
1288 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
45dac1d6 | 1289 | u16 segCnt = 0, mss = 0; |
115924b6 SB |
1290 | #ifdef __BIG_ENDIAN_BITFIELD |
1291 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1292 | struct Vmxnet3_RxCompDesc rxComp; | |
1293 | #endif | |
1294 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1295 | &rxComp); | |
d1a890fa SB |
1296 | while (rcd->gen == rq->comp_ring.gen) { |
1297 | struct vmxnet3_rx_buf_info *rbi; | |
5318d809 SB |
1298 | struct sk_buff *skb, *new_skb = NULL; |
1299 | struct page *new_page = NULL; | |
5738a09d | 1300 | dma_addr_t new_dma_addr; |
d1a890fa SB |
1301 | int num_to_alloc; |
1302 | struct Vmxnet3_RxDesc *rxd; | |
1303 | u32 idx, ring_idx; | |
5318d809 | 1304 | struct vmxnet3_cmd_ring *ring = NULL; |
0769636c | 1305 | if (num_pkts >= quota) { |
d1a890fa SB |
1306 | /* we may stop even before we see the EOP desc of |
1307 | * the current pkt | |
1308 | */ | |
1309 | break; | |
1310 | } | |
f3002c13 | 1311 | |
1312 | /* Prevent any rcd field from being (speculatively) read before | |
1313 | * rcd->gen is read. | |
1314 | */ | |
1315 | dma_rmb(); | |
1316 | ||
50a5ce3e SK |
1317 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2 && |
1318 | rcd->rqID != rq->dataRingQid); | |
d1a890fa | 1319 | idx = rcd->rxdIdx; |
50a5ce3e | 1320 | ring_idx = VMXNET3_GET_RING_IDX(adapter, rcd->rqID); |
5318d809 | 1321 | ring = rq->rx_ring + ring_idx; |
115924b6 SB |
1322 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, |
1323 | &rxCmdDesc); | |
d1a890fa SB |
1324 | rbi = rq->buf_info[ring_idx] + idx; |
1325 | ||
115924b6 SB |
1326 | BUG_ON(rxd->addr != rbi->dma_addr || |
1327 | rxd->len != rbi->len); | |
d1a890fa SB |
1328 | |
1329 | if (unlikely(rcd->eop && rcd->err)) { | |
1330 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1331 | goto rcd_done; | |
1332 | } | |
1333 | ||
1334 | if (rcd->sop) { /* first buf of the pkt */ | |
50a5ce3e SK |
1335 | bool rxDataRingUsed; |
1336 | u16 len; | |
1337 | ||
d1a890fa | 1338 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || |
50a5ce3e SK |
1339 | (rcd->rqID != rq->qid && |
1340 | rcd->rqID != rq->dataRingQid)); | |
d1a890fa SB |
1341 | |
1342 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1343 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1344 | ||
1345 | if (unlikely(rcd->len == 0)) { | |
1346 | /* Pretend the rx buffer is skipped. */ | |
1347 | BUG_ON(!(rcd->sop && rcd->eop)); | |
fdcd79b9 | 1348 | netdev_dbg(adapter->netdev, |
f6965582 | 1349 | "rxRing[%u][%u] 0 length\n", |
d1a890fa SB |
1350 | ring_idx, idx); |
1351 | goto rcd_done; | |
1352 | } | |
1353 | ||
5318d809 | 1354 | skip_page_frags = false; |
d1a890fa | 1355 | ctx->skb = rbi->skb; |
50a5ce3e SK |
1356 | |
1357 | rxDataRingUsed = | |
1358 | VMXNET3_RX_DATA_RING(adapter, rcd->rqID); | |
1359 | len = rxDataRingUsed ? rcd->len : rbi->len; | |
0d735f13 | 1360 | new_skb = netdev_alloc_skb_ip_align(adapter->netdev, |
50a5ce3e | 1361 | len); |
5318d809 SB |
1362 | if (new_skb == NULL) { |
1363 | /* Skb allocation failed, do not handover this | |
1364 | * skb to stack. Reuse it. Drop the existing pkt | |
1365 | */ | |
1366 | rq->stats.rx_buf_alloc_failure++; | |
1367 | ctx->skb = NULL; | |
1368 | rq->stats.drop_total++; | |
1369 | skip_page_frags = true; | |
1370 | goto rcd_done; | |
1371 | } | |
d1a890fa | 1372 | |
50a5ce3e SK |
1373 | if (rxDataRingUsed) { |
1374 | size_t sz; | |
1375 | ||
1376 | BUG_ON(rcd->len > rq->data_ring.desc_size); | |
1377 | ||
1378 | ctx->skb = new_skb; | |
1379 | sz = rcd->rxdIdx * rq->data_ring.desc_size; | |
1380 | memcpy(new_skb->data, | |
1381 | &rq->data_ring.base[sz], rcd->len); | |
1382 | } else { | |
1383 | ctx->skb = rbi->skb; | |
1384 | ||
1385 | new_dma_addr = | |
1386 | dma_map_single(&adapter->pdev->dev, | |
1387 | new_skb->data, rbi->len, | |
1388 | PCI_DMA_FROMDEVICE); | |
1389 | if (dma_mapping_error(&adapter->pdev->dev, | |
1390 | new_dma_addr)) { | |
1391 | dev_kfree_skb(new_skb); | |
1392 | /* Skb allocation failed, do not | |
1393 | * handover this skb to stack. Reuse | |
1394 | * it. Drop the existing pkt. | |
1395 | */ | |
1396 | rq->stats.rx_buf_alloc_failure++; | |
1397 | ctx->skb = NULL; | |
1398 | rq->stats.drop_total++; | |
1399 | skip_page_frags = true; | |
1400 | goto rcd_done; | |
1401 | } | |
1402 | ||
1403 | dma_unmap_single(&adapter->pdev->dev, | |
1404 | rbi->dma_addr, | |
1405 | rbi->len, | |
1406 | PCI_DMA_FROMDEVICE); | |
1407 | ||
1408 | /* Immediate refill */ | |
1409 | rbi->skb = new_skb; | |
1410 | rbi->dma_addr = new_dma_addr; | |
1411 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1412 | rxd->len = rbi->len; | |
1413 | } | |
d1a890fa | 1414 | |
7db11f75 SH |
1415 | #ifdef VMXNET3_RSS |
1416 | if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE && | |
1417 | (adapter->netdev->features & NETIF_F_RXHASH)) | |
2c15a154 MS |
1418 | skb_set_hash(ctx->skb, |
1419 | le32_to_cpu(rcd->rssHash), | |
0b680703 | 1420 | PKT_HASH_TYPE_L3); |
7db11f75 | 1421 | #endif |
d1a890fa | 1422 | skb_put(ctx->skb, rcd->len); |
5318d809 | 1423 | |
190af10f | 1424 | if (VMXNET3_VERSION_GE_2(adapter) && |
45dac1d6 SB |
1425 | rcd->type == VMXNET3_CDTYPE_RXCOMP_LRO) { |
1426 | struct Vmxnet3_RxCompDescExt *rcdlro; | |
1427 | rcdlro = (struct Vmxnet3_RxCompDescExt *)rcd; | |
1428 | ||
1429 | segCnt = rcdlro->segCnt; | |
50219538 | 1430 | WARN_ON_ONCE(segCnt == 0); |
45dac1d6 SB |
1431 | mss = rcdlro->mss; |
1432 | if (unlikely(segCnt <= 1)) | |
1433 | segCnt = 0; | |
1434 | } else { | |
1435 | segCnt = 0; | |
1436 | } | |
d1a890fa | 1437 | } else { |
5318d809 SB |
1438 | BUG_ON(ctx->skb == NULL && !skip_page_frags); |
1439 | ||
d1a890fa | 1440 | /* non SOP buffer must be type 1 in most cases */ |
5318d809 SB |
1441 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); |
1442 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
d1a890fa | 1443 | |
5318d809 SB |
1444 | /* If an sop buffer was dropped, skip all |
1445 | * following non-sop fragments. They will be reused. | |
1446 | */ | |
1447 | if (skip_page_frags) | |
1448 | goto rcd_done; | |
d1a890fa | 1449 | |
c41fcce9 SB |
1450 | if (rcd->len) { |
1451 | new_page = alloc_page(GFP_ATOMIC); | |
5318d809 SB |
1452 | /* Replacement page frag could not be allocated. |
1453 | * Reuse this page. Drop the pkt and free the | |
1454 | * skb which contained this page as a frag. Skip | |
1455 | * processing all the following non-sop frags. | |
d1a890fa | 1456 | */ |
c41fcce9 SB |
1457 | if (unlikely(!new_page)) { |
1458 | rq->stats.rx_buf_alloc_failure++; | |
1459 | dev_kfree_skb(ctx->skb); | |
1460 | ctx->skb = NULL; | |
1461 | skip_page_frags = true; | |
1462 | goto rcd_done; | |
1463 | } | |
58caf637 SK |
1464 | new_dma_addr = dma_map_page(&adapter->pdev->dev, |
1465 | new_page, | |
1466 | 0, PAGE_SIZE, | |
1467 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
1468 | if (dma_mapping_error(&adapter->pdev->dev, |
1469 | new_dma_addr)) { | |
1470 | put_page(new_page); | |
1471 | rq->stats.rx_buf_alloc_failure++; | |
1472 | dev_kfree_skb(ctx->skb); | |
1473 | ctx->skb = NULL; | |
1474 | skip_page_frags = true; | |
1475 | goto rcd_done; | |
1476 | } | |
5318d809 | 1477 | |
b0eb57cb | 1478 | dma_unmap_page(&adapter->pdev->dev, |
5318d809 SB |
1479 | rbi->dma_addr, rbi->len, |
1480 | PCI_DMA_FROMDEVICE); | |
1481 | ||
1482 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
5318d809 | 1483 | |
c41fcce9 SB |
1484 | /* Immediate refill */ |
1485 | rbi->page = new_page; | |
5738a09d | 1486 | rbi->dma_addr = new_dma_addr; |
c41fcce9 SB |
1487 | rxd->addr = cpu_to_le64(rbi->dma_addr); |
1488 | rxd->len = rbi->len; | |
1489 | } | |
d1a890fa SB |
1490 | } |
1491 | ||
5318d809 | 1492 | |
d1a890fa SB |
1493 | skb = ctx->skb; |
1494 | if (rcd->eop) { | |
45dac1d6 | 1495 | u32 mtu = adapter->netdev->mtu; |
d1a890fa | 1496 | skb->len += skb->data_len; |
d1a890fa SB |
1497 | |
1498 | vmxnet3_rx_csum(adapter, skb, | |
1499 | (union Vmxnet3_GenericDesc *)rcd); | |
1500 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
034f4057 RD |
1501 | if (!rcd->tcp || |
1502 | !(adapter->netdev->features & NETIF_F_LRO)) | |
45dac1d6 SB |
1503 | goto not_lro; |
1504 | ||
1505 | if (segCnt != 0 && mss != 0) { | |
1506 | skb_shinfo(skb)->gso_type = rcd->v4 ? | |
1507 | SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1508 | skb_shinfo(skb)->gso_size = mss; | |
1509 | skb_shinfo(skb)->gso_segs = segCnt; | |
1510 | } else if (segCnt != 0 || skb->len > mtu) { | |
1511 | u32 hlen; | |
1512 | ||
1513 | hlen = vmxnet3_get_hdr_len(adapter, skb, | |
1514 | (union Vmxnet3_GenericDesc *)rcd); | |
1515 | if (hlen == 0) | |
1516 | goto not_lro; | |
1517 | ||
1518 | skb_shinfo(skb)->gso_type = | |
1519 | rcd->v4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1520 | if (segCnt != 0) { | |
1521 | skb_shinfo(skb)->gso_segs = segCnt; | |
1522 | skb_shinfo(skb)->gso_size = | |
1523 | DIV_ROUND_UP(skb->len - | |
1524 | hlen, segCnt); | |
1525 | } else { | |
1526 | skb_shinfo(skb)->gso_size = mtu - hlen; | |
1527 | } | |
1528 | } | |
1529 | not_lro: | |
72e85c45 | 1530 | if (unlikely(rcd->ts)) |
86a9bad3 | 1531 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci); |
72e85c45 | 1532 | |
213ade8c JG |
1533 | if (adapter->netdev->features & NETIF_F_LRO) |
1534 | netif_receive_skb(skb); | |
1535 | else | |
1536 | napi_gro_receive(&rq->napi, skb); | |
d1a890fa | 1537 | |
d1a890fa | 1538 | ctx->skb = NULL; |
0769636c | 1539 | num_pkts++; |
d1a890fa SB |
1540 | } |
1541 | ||
1542 | rcd_done: | |
5318d809 SB |
1543 | /* device may have skipped some rx descs */ |
1544 | ring->next2comp = idx; | |
1545 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1546 | ring = rq->rx_ring + ring_idx; | |
f3002c13 | 1547 | |
1548 | /* Ensure that the writes to rxd->gen bits will be observed | |
1549 | * after all other writes to rxd objects. | |
1550 | */ | |
1551 | dma_wmb(); | |
1552 | ||
5318d809 SB |
1553 | while (num_to_alloc) { |
1554 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1555 | &rxCmdDesc); | |
1556 | BUG_ON(!rxd->addr); | |
1557 | ||
1558 | /* Recv desc is ready to be used by the device */ | |
1559 | rxd->gen = ring->gen; | |
1560 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1561 | num_to_alloc--; | |
1562 | } | |
1563 | ||
1564 | /* if needed, update the register */ | |
1565 | if (unlikely(rq->shared->updateRxProd)) { | |
1566 | VMXNET3_WRITE_BAR0_REG(adapter, | |
96800ee7 | 1567 | rxprod_reg[ring_idx] + rq->qid * 8, |
1568 | ring->next2fill); | |
d1a890fa SB |
1569 | } |
1570 | ||
1571 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
115924b6 | 1572 | vmxnet3_getRxComp(rcd, |
96800ee7 | 1573 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); |
d1a890fa SB |
1574 | } |
1575 | ||
0769636c | 1576 | return num_pkts; |
d1a890fa SB |
1577 | } |
1578 | ||
1579 | ||
1580 | static void | |
1581 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1582 | struct vmxnet3_adapter *adapter) | |
1583 | { | |
1584 | u32 i, ring_idx; | |
1585 | struct Vmxnet3_RxDesc *rxd; | |
1586 | ||
1587 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1588 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
115924b6 SB |
1589 | #ifdef __BIG_ENDIAN_BITFIELD |
1590 | struct Vmxnet3_RxDesc rxDesc; | |
1591 | #endif | |
1592 | vmxnet3_getRxDesc(rxd, | |
1593 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
d1a890fa SB |
1594 | |
1595 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1596 | rq->buf_info[ring_idx][i].skb) { | |
b0eb57cb | 1597 | dma_unmap_single(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1598 | rxd->len, PCI_DMA_FROMDEVICE); |
1599 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1600 | rq->buf_info[ring_idx][i].skb = NULL; | |
1601 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1602 | rq->buf_info[ring_idx][i].page) { | |
b0eb57cb | 1603 | dma_unmap_page(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1604 | rxd->len, PCI_DMA_FROMDEVICE); |
1605 | put_page(rq->buf_info[ring_idx][i].page); | |
1606 | rq->buf_info[ring_idx][i].page = NULL; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1611 | rq->rx_ring[ring_idx].next2fill = | |
1612 | rq->rx_ring[ring_idx].next2comp = 0; | |
d1a890fa SB |
1613 | } |
1614 | ||
1615 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1616 | rq->comp_ring.next2proc = 0; | |
1617 | } | |
1618 | ||
1619 | ||
09c5088e SB |
1620 | static void |
1621 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1622 | { | |
1623 | int i; | |
1624 | ||
1625 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1626 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1627 | } | |
1628 | ||
1629 | ||
280b74f7 | 1630 | static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, |
1631 | struct vmxnet3_adapter *adapter) | |
d1a890fa SB |
1632 | { |
1633 | int i; | |
1634 | int j; | |
1635 | ||
1636 | /* all rx buffers must have already been freed */ | |
1637 | for (i = 0; i < 2; i++) { | |
1638 | if (rq->buf_info[i]) { | |
1639 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1640 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | ||
d1a890fa SB |
1645 | for (i = 0; i < 2; i++) { |
1646 | if (rq->rx_ring[i].base) { | |
b0eb57cb AK |
1647 | dma_free_coherent(&adapter->pdev->dev, |
1648 | rq->rx_ring[i].size | |
1649 | * sizeof(struct Vmxnet3_RxDesc), | |
1650 | rq->rx_ring[i].base, | |
1651 | rq->rx_ring[i].basePA); | |
d1a890fa SB |
1652 | rq->rx_ring[i].base = NULL; |
1653 | } | |
d1a890fa SB |
1654 | } |
1655 | ||
50a5ce3e SK |
1656 | if (rq->data_ring.base) { |
1657 | dma_free_coherent(&adapter->pdev->dev, | |
1658 | rq->rx_ring[0].size * rq->data_ring.desc_size, | |
1659 | rq->data_ring.base, rq->data_ring.basePA); | |
1660 | rq->data_ring.base = NULL; | |
1661 | } | |
1662 | ||
d1a890fa | 1663 | if (rq->comp_ring.base) { |
b0eb57cb AK |
1664 | dma_free_coherent(&adapter->pdev->dev, rq->comp_ring.size |
1665 | * sizeof(struct Vmxnet3_RxCompDesc), | |
1666 | rq->comp_ring.base, rq->comp_ring.basePA); | |
d1a890fa SB |
1667 | rq->comp_ring.base = NULL; |
1668 | } | |
b0eb57cb AK |
1669 | |
1670 | if (rq->buf_info[0]) { | |
1671 | size_t sz = sizeof(struct vmxnet3_rx_buf_info) * | |
1672 | (rq->rx_ring[0].size + rq->rx_ring[1].size); | |
1673 | dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], | |
1674 | rq->buf_info_pa); | |
848b1598 | 1675 | rq->buf_info[0] = rq->buf_info[1] = NULL; |
b0eb57cb | 1676 | } |
d1a890fa SB |
1677 | } |
1678 | ||
bb40aca7 | 1679 | static void |
50a5ce3e SK |
1680 | vmxnet3_rq_destroy_all_rxdataring(struct vmxnet3_adapter *adapter) |
1681 | { | |
1682 | int i; | |
1683 | ||
1684 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1685 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1686 | ||
1687 | if (rq->data_ring.base) { | |
1688 | dma_free_coherent(&adapter->pdev->dev, | |
1689 | (rq->rx_ring[0].size * | |
1690 | rq->data_ring.desc_size), | |
1691 | rq->data_ring.base, | |
1692 | rq->data_ring.basePA); | |
1693 | rq->data_ring.base = NULL; | |
1694 | rq->data_ring.desc_size = 0; | |
1695 | } | |
1696 | } | |
1697 | } | |
d1a890fa SB |
1698 | |
1699 | static int | |
1700 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1701 | struct vmxnet3_adapter *adapter) | |
1702 | { | |
1703 | int i; | |
1704 | ||
1705 | /* initialize buf_info */ | |
1706 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1707 | ||
1708 | /* 1st buf for a pkt is skbuff */ | |
1709 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1710 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1711 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1712 | } else { /* subsequent bufs for a pkt is frag */ | |
1713 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1714 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1715 | } | |
1716 | } | |
1717 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1718 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1719 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1720 | } | |
1721 | ||
1722 | /* reset internal state and allocate buffers for both rings */ | |
1723 | for (i = 0; i < 2; i++) { | |
1724 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
d1a890fa SB |
1725 | |
1726 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1727 | sizeof(struct Vmxnet3_RxDesc)); | |
1728 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1729 | } | |
1730 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1731 | adapter) == 0) { | |
1732 | /* at least has 1 rx buffer for the 1st ring */ | |
1733 | return -ENOMEM; | |
1734 | } | |
1735 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1736 | ||
1737 | /* reset the comp ring */ | |
1738 | rq->comp_ring.next2proc = 0; | |
1739 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1740 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1741 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1742 | ||
1743 | /* reset rxctx */ | |
1744 | rq->rx_ctx.skb = NULL; | |
1745 | ||
1746 | /* stats are not reset */ | |
1747 | return 0; | |
1748 | } | |
1749 | ||
1750 | ||
09c5088e SB |
1751 | static int |
1752 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1753 | { | |
1754 | int i, err = 0; | |
1755 | ||
1756 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1757 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1758 | if (unlikely(err)) { | |
1759 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1760 | "initialize rx queue%i\n", | |
1761 | adapter->netdev->name, i); | |
1762 | break; | |
1763 | } | |
1764 | } | |
1765 | return err; | |
1766 | ||
1767 | } | |
1768 | ||
1769 | ||
d1a890fa SB |
1770 | static int |
1771 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1772 | { | |
1773 | int i; | |
1774 | size_t sz; | |
1775 | struct vmxnet3_rx_buf_info *bi; | |
1776 | ||
1777 | for (i = 0; i < 2; i++) { | |
1778 | ||
1779 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
b0eb57cb AK |
1780 | rq->rx_ring[i].base = dma_alloc_coherent( |
1781 | &adapter->pdev->dev, sz, | |
1782 | &rq->rx_ring[i].basePA, | |
1783 | GFP_KERNEL); | |
d1a890fa | 1784 | if (!rq->rx_ring[i].base) { |
204a6e65 SH |
1785 | netdev_err(adapter->netdev, |
1786 | "failed to allocate rx ring %d\n", i); | |
d1a890fa SB |
1787 | goto err; |
1788 | } | |
1789 | } | |
1790 | ||
50a5ce3e SK |
1791 | if ((adapter->rxdataring_enabled) && (rq->data_ring.desc_size != 0)) { |
1792 | sz = rq->rx_ring[0].size * rq->data_ring.desc_size; | |
1793 | rq->data_ring.base = | |
1794 | dma_alloc_coherent(&adapter->pdev->dev, sz, | |
1795 | &rq->data_ring.basePA, | |
1796 | GFP_KERNEL); | |
1797 | if (!rq->data_ring.base) { | |
1798 | netdev_err(adapter->netdev, | |
1799 | "rx data ring will be disabled\n"); | |
1800 | adapter->rxdataring_enabled = false; | |
1801 | } | |
1802 | } else { | |
1803 | rq->data_ring.base = NULL; | |
1804 | rq->data_ring.desc_size = 0; | |
1805 | } | |
1806 | ||
d1a890fa | 1807 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); |
b0eb57cb AK |
1808 | rq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, sz, |
1809 | &rq->comp_ring.basePA, | |
1810 | GFP_KERNEL); | |
d1a890fa | 1811 | if (!rq->comp_ring.base) { |
204a6e65 | 1812 | netdev_err(adapter->netdev, "failed to allocate rx comp ring\n"); |
d1a890fa SB |
1813 | goto err; |
1814 | } | |
1815 | ||
1816 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1817 | rq->rx_ring[1].size); | |
750afb08 LC |
1818 | bi = dma_alloc_coherent(&adapter->pdev->dev, sz, &rq->buf_info_pa, |
1819 | GFP_KERNEL); | |
e404decb | 1820 | if (!bi) |
d1a890fa | 1821 | goto err; |
e404decb | 1822 | |
d1a890fa SB |
1823 | rq->buf_info[0] = bi; |
1824 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1825 | ||
1826 | return 0; | |
1827 | ||
1828 | err: | |
1829 | vmxnet3_rq_destroy(rq, adapter); | |
1830 | return -ENOMEM; | |
1831 | } | |
1832 | ||
1833 | ||
09c5088e SB |
1834 | static int |
1835 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1836 | { | |
1837 | int i, err = 0; | |
1838 | ||
50a5ce3e SK |
1839 | adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter); |
1840 | ||
09c5088e SB |
1841 | for (i = 0; i < adapter->num_rx_queues; i++) { |
1842 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1843 | if (unlikely(err)) { | |
1844 | dev_err(&adapter->netdev->dev, | |
1845 | "%s: failed to create rx queue%i\n", | |
1846 | adapter->netdev->name, i); | |
1847 | goto err_out; | |
1848 | } | |
1849 | } | |
50a5ce3e SK |
1850 | |
1851 | if (!adapter->rxdataring_enabled) | |
1852 | vmxnet3_rq_destroy_all_rxdataring(adapter); | |
1853 | ||
09c5088e SB |
1854 | return err; |
1855 | err_out: | |
1856 | vmxnet3_rq_destroy_all(adapter); | |
1857 | return err; | |
1858 | ||
1859 | } | |
1860 | ||
1861 | /* Multiple queue aware polling function for tx and rx */ | |
1862 | ||
d1a890fa SB |
1863 | static int |
1864 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1865 | { | |
09c5088e | 1866 | int rcd_done = 0, i; |
d1a890fa SB |
1867 | if (unlikely(adapter->shared->ecr)) |
1868 | vmxnet3_process_events(adapter); | |
09c5088e SB |
1869 | for (i = 0; i < adapter->num_tx_queues; i++) |
1870 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
d1a890fa | 1871 | |
09c5088e SB |
1872 | for (i = 0; i < adapter->num_rx_queues; i++) |
1873 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1874 | adapter, budget); | |
1875 | return rcd_done; | |
d1a890fa SB |
1876 | } |
1877 | ||
1878 | ||
1879 | static int | |
1880 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1881 | { | |
09c5088e SB |
1882 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, |
1883 | struct vmxnet3_rx_queue, napi); | |
1884 | int rxd_done; | |
1885 | ||
1886 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1887 | ||
1888 | if (rxd_done < budget) { | |
6ad20165 | 1889 | napi_complete_done(napi, rxd_done); |
09c5088e SB |
1890 | vmxnet3_enable_all_intrs(rx_queue->adapter); |
1891 | } | |
1892 | return rxd_done; | |
1893 | } | |
1894 | ||
1895 | /* | |
1896 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1897 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1898 | */ | |
1899 | ||
1900 | static int | |
1901 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1902 | { | |
1903 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1904 | struct vmxnet3_rx_queue, napi); | |
1905 | struct vmxnet3_adapter *adapter = rq->adapter; | |
d1a890fa SB |
1906 | int rxd_done; |
1907 | ||
09c5088e SB |
1908 | /* When sharing interrupt with corresponding tx queue, process |
1909 | * tx completions in that queue as well | |
1910 | */ | |
1911 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1912 | struct vmxnet3_tx_queue *tq = | |
1913 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1914 | vmxnet3_tq_tx_complete(tq, adapter); | |
1915 | } | |
1916 | ||
1917 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
d1a890fa SB |
1918 | |
1919 | if (rxd_done < budget) { | |
6ad20165 | 1920 | napi_complete_done(napi, rxd_done); |
09c5088e | 1921 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); |
d1a890fa SB |
1922 | } |
1923 | return rxd_done; | |
1924 | } | |
1925 | ||
1926 | ||
09c5088e SB |
1927 | #ifdef CONFIG_PCI_MSI |
1928 | ||
1929 | /* | |
1930 | * Handle completion interrupts on tx queues | |
1931 | * Returns whether or not the intr is handled | |
1932 | */ | |
1933 | ||
1934 | static irqreturn_t | |
1935 | vmxnet3_msix_tx(int irq, void *data) | |
1936 | { | |
1937 | struct vmxnet3_tx_queue *tq = data; | |
1938 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1939 | ||
1940 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1941 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1942 | ||
1943 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1944 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1945 | int i; | |
1946 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1947 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1948 | vmxnet3_tq_tx_complete(txq, adapter); | |
1949 | } | |
1950 | } else { | |
1951 | vmxnet3_tq_tx_complete(tq, adapter); | |
1952 | } | |
1953 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1954 | ||
1955 | return IRQ_HANDLED; | |
1956 | } | |
1957 | ||
1958 | ||
1959 | /* | |
1960 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1961 | * intr is handled | |
1962 | */ | |
1963 | ||
1964 | static irqreturn_t | |
1965 | vmxnet3_msix_rx(int irq, void *data) | |
1966 | { | |
1967 | struct vmxnet3_rx_queue *rq = data; | |
1968 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1969 | ||
1970 | /* disable intr if needed */ | |
1971 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1972 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1973 | napi_schedule(&rq->napi); | |
1974 | ||
1975 | return IRQ_HANDLED; | |
1976 | } | |
1977 | ||
1978 | /* | |
1979 | *---------------------------------------------------------------------------- | |
1980 | * | |
1981 | * vmxnet3_msix_event -- | |
1982 | * | |
1983 | * vmxnet3 msix event intr handler | |
1984 | * | |
1985 | * Result: | |
1986 | * whether or not the intr is handled | |
1987 | * | |
1988 | *---------------------------------------------------------------------------- | |
1989 | */ | |
1990 | ||
1991 | static irqreturn_t | |
1992 | vmxnet3_msix_event(int irq, void *data) | |
1993 | { | |
1994 | struct net_device *dev = data; | |
1995 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1996 | ||
1997 | /* disable intr if needed */ | |
1998 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1999 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
2000 | ||
2001 | if (adapter->shared->ecr) | |
2002 | vmxnet3_process_events(adapter); | |
2003 | ||
2004 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
2005 | ||
2006 | return IRQ_HANDLED; | |
2007 | } | |
2008 | ||
2009 | #endif /* CONFIG_PCI_MSI */ | |
2010 | ||
2011 | ||
d1a890fa SB |
2012 | /* Interrupt handler for vmxnet3 */ |
2013 | static irqreturn_t | |
2014 | vmxnet3_intr(int irq, void *dev_id) | |
2015 | { | |
2016 | struct net_device *dev = dev_id; | |
2017 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
2018 | ||
09c5088e | 2019 | if (adapter->intr.type == VMXNET3_IT_INTX) { |
d1a890fa SB |
2020 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); |
2021 | if (unlikely(icr == 0)) | |
2022 | /* not ours */ | |
2023 | return IRQ_NONE; | |
2024 | } | |
2025 | ||
2026 | ||
2027 | /* disable intr if needed */ | |
2028 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
09c5088e | 2029 | vmxnet3_disable_all_intrs(adapter); |
d1a890fa | 2030 | |
09c5088e | 2031 | napi_schedule(&adapter->rx_queue[0].napi); |
d1a890fa SB |
2032 | |
2033 | return IRQ_HANDLED; | |
2034 | } | |
2035 | ||
2036 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2037 | ||
d1a890fa SB |
2038 | /* netpoll callback. */ |
2039 | static void | |
2040 | vmxnet3_netpoll(struct net_device *netdev) | |
2041 | { | |
2042 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2043 | |
d25f06ea | 2044 | switch (adapter->intr.type) { |
0a8d8c44 AB |
2045 | #ifdef CONFIG_PCI_MSI |
2046 | case VMXNET3_IT_MSIX: { | |
2047 | int i; | |
d25f06ea NH |
2048 | for (i = 0; i < adapter->num_rx_queues; i++) |
2049 | vmxnet3_msix_rx(0, &adapter->rx_queue[i]); | |
2050 | break; | |
0a8d8c44 AB |
2051 | } |
2052 | #endif | |
d25f06ea NH |
2053 | case VMXNET3_IT_MSI: |
2054 | default: | |
2055 | vmxnet3_intr(0, adapter->netdev); | |
2056 | break; | |
2057 | } | |
d1a890fa | 2058 | |
d1a890fa | 2059 | } |
09c5088e | 2060 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
d1a890fa SB |
2061 | |
2062 | static int | |
2063 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
2064 | { | |
09c5088e SB |
2065 | struct vmxnet3_intr *intr = &adapter->intr; |
2066 | int err = 0, i; | |
2067 | int vector = 0; | |
d1a890fa | 2068 | |
8f7e524c | 2069 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 2070 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
2071 | for (i = 0; i < adapter->num_tx_queues; i++) { |
2072 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
2073 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
2074 | adapter->netdev->name, vector); | |
2075 | err = request_irq( | |
2076 | intr->msix_entries[vector].vector, | |
2077 | vmxnet3_msix_tx, 0, | |
2078 | adapter->tx_queue[i].name, | |
2079 | &adapter->tx_queue[i]); | |
2080 | } else { | |
2081 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
2082 | adapter->netdev->name, vector); | |
2083 | } | |
2084 | if (err) { | |
2085 | dev_err(&adapter->netdev->dev, | |
2086 | "Failed to request irq for MSIX, %s, " | |
2087 | "error %d\n", | |
2088 | adapter->tx_queue[i].name, err); | |
2089 | return err; | |
2090 | } | |
2091 | ||
2092 | /* Handle the case where only 1 MSIx was allocated for | |
2093 | * all tx queues */ | |
2094 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
2095 | for (; i < adapter->num_tx_queues; i++) | |
2096 | adapter->tx_queue[i].comp_ring.intr_idx | |
2097 | = vector; | |
2098 | vector++; | |
2099 | break; | |
2100 | } else { | |
2101 | adapter->tx_queue[i].comp_ring.intr_idx | |
2102 | = vector++; | |
2103 | } | |
2104 | } | |
2105 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
2106 | vector = 0; | |
2107 | ||
2108 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2109 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
2110 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
2111 | adapter->netdev->name, vector); | |
2112 | else | |
2113 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
2114 | adapter->netdev->name, vector); | |
2115 | err = request_irq(intr->msix_entries[vector].vector, | |
2116 | vmxnet3_msix_rx, 0, | |
2117 | adapter->rx_queue[i].name, | |
2118 | &(adapter->rx_queue[i])); | |
2119 | if (err) { | |
204a6e65 SH |
2120 | netdev_err(adapter->netdev, |
2121 | "Failed to request irq for MSIX, " | |
2122 | "%s, error %d\n", | |
2123 | adapter->rx_queue[i].name, err); | |
09c5088e SB |
2124 | return err; |
2125 | } | |
2126 | ||
2127 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
2128 | } | |
2129 | ||
2130 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
2131 | adapter->netdev->name, vector); | |
2132 | err = request_irq(intr->msix_entries[vector].vector, | |
2133 | vmxnet3_msix_event, 0, | |
2134 | intr->event_msi_vector_name, adapter->netdev); | |
2135 | intr->event_intr_idx = vector; | |
2136 | ||
2137 | } else if (intr->type == VMXNET3_IT_MSI) { | |
2138 | adapter->num_rx_queues = 1; | |
d1a890fa SB |
2139 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, |
2140 | adapter->netdev->name, adapter->netdev); | |
09c5088e | 2141 | } else { |
115924b6 | 2142 | #endif |
09c5088e | 2143 | adapter->num_rx_queues = 1; |
d1a890fa SB |
2144 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, |
2145 | IRQF_SHARED, adapter->netdev->name, | |
2146 | adapter->netdev); | |
09c5088e | 2147 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 2148 | } |
09c5088e SB |
2149 | #endif |
2150 | intr->num_intrs = vector + 1; | |
2151 | if (err) { | |
204a6e65 SH |
2152 | netdev_err(adapter->netdev, |
2153 | "Failed to request irq (intr type:%d), error %d\n", | |
2154 | intr->type, err); | |
09c5088e SB |
2155 | } else { |
2156 | /* Number of rx queues will not change after this */ | |
2157 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2158 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2159 | rq->qid = i; | |
2160 | rq->qid2 = i + adapter->num_rx_queues; | |
50a5ce3e | 2161 | rq->dataRingQid = i + 2 * adapter->num_rx_queues; |
09c5088e | 2162 | } |
d1a890fa | 2163 | |
09c5088e SB |
2164 | /* init our intr settings */ |
2165 | for (i = 0; i < intr->num_intrs; i++) | |
2166 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
2167 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
2168 | adapter->intr.event_intr_idx = 0; | |
2169 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2170 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
2171 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
2172 | } | |
d1a890fa | 2173 | |
204a6e65 SH |
2174 | netdev_info(adapter->netdev, |
2175 | "intr type %u, mode %u, %u vectors allocated\n", | |
2176 | intr->type, intr->mask_mode, intr->num_intrs); | |
d1a890fa SB |
2177 | } |
2178 | ||
2179 | return err; | |
2180 | } | |
2181 | ||
2182 | ||
2183 | static void | |
2184 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
2185 | { | |
09c5088e SB |
2186 | struct vmxnet3_intr *intr = &adapter->intr; |
2187 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
d1a890fa | 2188 | |
09c5088e | 2189 | switch (intr->type) { |
8f7e524c | 2190 | #ifdef CONFIG_PCI_MSI |
d1a890fa SB |
2191 | case VMXNET3_IT_MSIX: |
2192 | { | |
09c5088e | 2193 | int i, vector = 0; |
d1a890fa | 2194 | |
09c5088e SB |
2195 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { |
2196 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2197 | free_irq(intr->msix_entries[vector++].vector, | |
2198 | &(adapter->tx_queue[i])); | |
2199 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
2200 | break; | |
2201 | } | |
2202 | } | |
2203 | ||
2204 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2205 | free_irq(intr->msix_entries[vector++].vector, | |
2206 | &(adapter->rx_queue[i])); | |
2207 | } | |
2208 | ||
2209 | free_irq(intr->msix_entries[vector].vector, | |
2210 | adapter->netdev); | |
2211 | BUG_ON(vector >= intr->num_intrs); | |
d1a890fa SB |
2212 | break; |
2213 | } | |
8f7e524c | 2214 | #endif |
d1a890fa SB |
2215 | case VMXNET3_IT_MSI: |
2216 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2217 | break; | |
2218 | case VMXNET3_IT_INTX: | |
2219 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2220 | break; | |
2221 | default: | |
c068e777 | 2222 | BUG(); |
d1a890fa SB |
2223 | } |
2224 | } | |
2225 | ||
d1a890fa SB |
2226 | |
2227 | static void | |
2228 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
2229 | { | |
72e85c45 JG |
2230 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; |
2231 | u16 vid; | |
d1a890fa | 2232 | |
72e85c45 JG |
2233 | /* allow untagged pkts */ |
2234 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
2235 | ||
2236 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
2237 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
d1a890fa SB |
2238 | } |
2239 | ||
2240 | ||
8e586137 | 2241 | static int |
80d5c368 | 2242 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
2243 | { |
2244 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2245 | |
f6957f88 JG |
2246 | if (!(netdev->flags & IFF_PROMISC)) { |
2247 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2248 | unsigned long flags; | |
2249 | ||
2250 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
2251 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2252 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2253 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2254 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2255 | } | |
72e85c45 JG |
2256 | |
2257 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2258 | |
2259 | return 0; | |
d1a890fa SB |
2260 | } |
2261 | ||
2262 | ||
8e586137 | 2263 | static int |
80d5c368 | 2264 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
2265 | { |
2266 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2267 | |
f6957f88 JG |
2268 | if (!(netdev->flags & IFF_PROMISC)) { |
2269 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2270 | unsigned long flags; | |
2271 | ||
2272 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
2273 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2274 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2275 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2276 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2277 | } | |
72e85c45 JG |
2278 | |
2279 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2280 | |
2281 | return 0; | |
d1a890fa SB |
2282 | } |
2283 | ||
2284 | ||
2285 | static u8 * | |
2286 | vmxnet3_copy_mc(struct net_device *netdev) | |
2287 | { | |
2288 | u8 *buf = NULL; | |
4cd24eaf | 2289 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; |
d1a890fa SB |
2290 | |
2291 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
2292 | if (sz <= 0xffff) { | |
2293 | /* We may be called with BH disabled */ | |
2294 | buf = kmalloc(sz, GFP_ATOMIC); | |
2295 | if (buf) { | |
22bedad3 | 2296 | struct netdev_hw_addr *ha; |
567ec874 | 2297 | int i = 0; |
d1a890fa | 2298 | |
22bedad3 JP |
2299 | netdev_for_each_mc_addr(ha, netdev) |
2300 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
d1a890fa | 2301 | ETH_ALEN); |
d1a890fa SB |
2302 | } |
2303 | } | |
2304 | return buf; | |
2305 | } | |
2306 | ||
2307 | ||
2308 | static void | |
2309 | vmxnet3_set_mc(struct net_device *netdev) | |
2310 | { | |
2311 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
83d0feff | 2312 | unsigned long flags; |
d1a890fa SB |
2313 | struct Vmxnet3_RxFilterConf *rxConf = |
2314 | &adapter->shared->devRead.rxFilterConf; | |
2315 | u8 *new_table = NULL; | |
b0eb57cb | 2316 | dma_addr_t new_table_pa = 0; |
fb5c6cfa | 2317 | bool new_table_pa_valid = false; |
d1a890fa SB |
2318 | u32 new_mode = VMXNET3_RXM_UCAST; |
2319 | ||
72e85c45 JG |
2320 | if (netdev->flags & IFF_PROMISC) { |
2321 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2322 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2323 | ||
d1a890fa | 2324 | new_mode |= VMXNET3_RXM_PROMISC; |
72e85c45 JG |
2325 | } else { |
2326 | vmxnet3_restore_vlan(adapter); | |
2327 | } | |
d1a890fa SB |
2328 | |
2329 | if (netdev->flags & IFF_BROADCAST) | |
2330 | new_mode |= VMXNET3_RXM_BCAST; | |
2331 | ||
2332 | if (netdev->flags & IFF_ALLMULTI) | |
2333 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2334 | else | |
4cd24eaf | 2335 | if (!netdev_mc_empty(netdev)) { |
d1a890fa SB |
2336 | new_table = vmxnet3_copy_mc(netdev); |
2337 | if (new_table) { | |
d37d5ec8 SK |
2338 | size_t sz = netdev_mc_count(netdev) * ETH_ALEN; |
2339 | ||
2340 | rxConf->mfTableLen = cpu_to_le16(sz); | |
b0eb57cb AK |
2341 | new_table_pa = dma_map_single( |
2342 | &adapter->pdev->dev, | |
2343 | new_table, | |
d37d5ec8 | 2344 | sz, |
b0eb57cb | 2345 | PCI_DMA_TODEVICE); |
fb5c6cfa AK |
2346 | if (!dma_mapping_error(&adapter->pdev->dev, |
2347 | new_table_pa)) { | |
2348 | new_mode |= VMXNET3_RXM_MCAST; | |
2349 | new_table_pa_valid = true; | |
2350 | rxConf->mfTablePA = cpu_to_le64( | |
2351 | new_table_pa); | |
2352 | } | |
4ad9a64f | 2353 | } |
fb5c6cfa | 2354 | if (!new_table_pa_valid) { |
4ad9a64f AK |
2355 | netdev_info(netdev, |
2356 | "failed to copy mcast list, setting ALL_MULTI\n"); | |
d1a890fa SB |
2357 | new_mode |= VMXNET3_RXM_ALL_MULTI; |
2358 | } | |
2359 | } | |
2360 | ||
d1a890fa SB |
2361 | if (!(new_mode & VMXNET3_RXM_MCAST)) { |
2362 | rxConf->mfTableLen = 0; | |
2363 | rxConf->mfTablePA = 0; | |
2364 | } | |
2365 | ||
83d0feff | 2366 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 2367 | if (new_mode != rxConf->rxMode) { |
115924b6 | 2368 | rxConf->rxMode = cpu_to_le32(new_mode); |
d1a890fa SB |
2369 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2370 | VMXNET3_CMD_UPDATE_RX_MODE); | |
72e85c45 JG |
2371 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2372 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
d1a890fa SB |
2373 | } |
2374 | ||
2375 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2376 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
83d0feff | 2377 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 2378 | |
fb5c6cfa | 2379 | if (new_table_pa_valid) |
b0eb57cb AK |
2380 | dma_unmap_single(&adapter->pdev->dev, new_table_pa, |
2381 | rxConf->mfTableLen, PCI_DMA_TODEVICE); | |
4ad9a64f | 2382 | kfree(new_table); |
d1a890fa SB |
2383 | } |
2384 | ||
09c5088e SB |
2385 | void |
2386 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2387 | { | |
2388 | int i; | |
2389 | ||
2390 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2391 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2392 | } | |
2393 | ||
d1a890fa SB |
2394 | |
2395 | /* | |
2396 | * Set up driver_shared based on settings in adapter. | |
2397 | */ | |
2398 | ||
2399 | static void | |
2400 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2401 | { | |
2402 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2403 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2404 | struct Vmxnet3_TxQueueConf *tqc; | |
2405 | struct Vmxnet3_RxQueueConf *rqc; | |
2406 | int i; | |
2407 | ||
2408 | memset(shared, 0, sizeof(*shared)); | |
2409 | ||
2410 | /* driver settings */ | |
115924b6 SB |
2411 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); |
2412 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2413 | VMXNET3_DRIVER_VERSION_NUM); | |
d1a890fa SB |
2414 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? |
2415 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2416 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
115924b6 SB |
2417 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( |
2418 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2419 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2420 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
d1a890fa | 2421 | |
b0eb57cb | 2422 | devRead->misc.ddPA = cpu_to_le64(adapter->adapter_pa); |
115924b6 | 2423 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); |
d1a890fa SB |
2424 | |
2425 | /* set up feature flags */ | |
a0d2730c | 2426 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
3843e515 | 2427 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; |
d1a890fa | 2428 | |
a0d2730c | 2429 | if (adapter->netdev->features & NETIF_F_LRO) { |
3843e515 | 2430 | devRead->misc.uptFeatures |= UPT1_F_LRO; |
115924b6 | 2431 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); |
d1a890fa | 2432 | } |
f646968f | 2433 | if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
3843e515 | 2434 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; |
d1a890fa | 2435 | |
115924b6 SB |
2436 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); |
2437 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2438 | devRead->misc.queueDescLen = cpu_to_le32( | |
09c5088e SB |
2439 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + |
2440 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
d1a890fa SB |
2441 | |
2442 | /* tx queue settings */ | |
09c5088e SB |
2443 | devRead->misc.numTxQueues = adapter->num_tx_queues; |
2444 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2445 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2446 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2447 | tqc = &adapter->tqd_start[i].conf; | |
2448 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2449 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2450 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
b0eb57cb | 2451 | tqc->ddPA = cpu_to_le64(tq->buf_info_pa); |
09c5088e SB |
2452 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); |
2453 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
3c8b3efc | 2454 | tqc->txDataRingDescSize = cpu_to_le32(tq->txdata_desc_size); |
09c5088e SB |
2455 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); |
2456 | tqc->ddLen = cpu_to_le32( | |
2457 | sizeof(struct vmxnet3_tx_buf_info) * | |
2458 | tqc->txRingSize); | |
2459 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2460 | } | |
d1a890fa SB |
2461 | |
2462 | /* rx queue settings */ | |
09c5088e SB |
2463 | devRead->misc.numRxQueues = adapter->num_rx_queues; |
2464 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2465 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2466 | rqc = &adapter->rqd_start[i].conf; | |
2467 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2468 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2469 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
b0eb57cb | 2470 | rqc->ddPA = cpu_to_le64(rq->buf_info_pa); |
09c5088e SB |
2471 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); |
2472 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2473 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2474 | rqc->ddLen = cpu_to_le32( | |
2475 | sizeof(struct vmxnet3_rx_buf_info) * | |
2476 | (rqc->rxRingSize[0] + | |
2477 | rqc->rxRingSize[1])); | |
2478 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
50a5ce3e SK |
2479 | if (VMXNET3_VERSION_GE_3(adapter)) { |
2480 | rqc->rxDataRingBasePA = | |
2481 | cpu_to_le64(rq->data_ring.basePA); | |
2482 | rqc->rxDataRingDescSize = | |
2483 | cpu_to_le16(rq->data_ring.desc_size); | |
2484 | } | |
09c5088e SB |
2485 | } |
2486 | ||
2487 | #ifdef VMXNET3_RSS | |
2488 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2489 | ||
2490 | if (adapter->rss) { | |
2491 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
66d35910 | 2492 | |
09c5088e SB |
2493 | devRead->misc.uptFeatures |= UPT1_F_RSS; |
2494 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2495 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2496 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2497 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2498 | UPT1_RSS_HASH_TYPE_IPV6; | |
2499 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2500 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2501 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
6bf79cdd | 2502 | netdev_rss_key_fill(rssConf->hashKey, sizeof(rssConf->hashKey)); |
66d35910 | 2503 | |
09c5088e | 2504 | for (i = 0; i < rssConf->indTableSize; i++) |
278bc429 BH |
2505 | rssConf->indTable[i] = ethtool_rxfh_indir_default( |
2506 | i, adapter->num_rx_queues); | |
09c5088e SB |
2507 | |
2508 | devRead->rssConfDesc.confVer = 1; | |
b0eb57cb AK |
2509 | devRead->rssConfDesc.confLen = cpu_to_le32(sizeof(*rssConf)); |
2510 | devRead->rssConfDesc.confPA = | |
2511 | cpu_to_le64(adapter->rss_conf_pa); | |
09c5088e SB |
2512 | } |
2513 | ||
2514 | #endif /* VMXNET3_RSS */ | |
d1a890fa SB |
2515 | |
2516 | /* intr settings */ | |
2517 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2518 | VMXNET3_IMM_AUTO; | |
2519 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2520 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2521 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2522 | ||
2523 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
6929fe8a | 2524 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); |
d1a890fa SB |
2525 | |
2526 | /* rx filter settings */ | |
2527 | devRead->rxFilterConf.rxMode = 0; | |
2528 | vmxnet3_restore_vlan(adapter); | |
f9f25026 SB |
2529 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); |
2530 | ||
d1a890fa SB |
2531 | /* the rest are already zeroed */ |
2532 | } | |
2533 | ||
4edef40e SK |
2534 | static void |
2535 | vmxnet3_init_coalesce(struct vmxnet3_adapter *adapter) | |
2536 | { | |
2537 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2538 | union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo; | |
2539 | unsigned long flags; | |
2540 | ||
2541 | if (!VMXNET3_VERSION_GE_3(adapter)) | |
2542 | return; | |
2543 | ||
2544 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2545 | cmdInfo->varConf.confVer = 1; | |
2546 | cmdInfo->varConf.confLen = | |
2547 | cpu_to_le32(sizeof(*adapter->coal_conf)); | |
2548 | cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa); | |
2549 | ||
2550 | if (adapter->default_coal_mode) { | |
2551 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2552 | VMXNET3_CMD_GET_COALESCE); | |
2553 | } else { | |
2554 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2555 | VMXNET3_CMD_SET_COALESCE); | |
2556 | } | |
2557 | ||
2558 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2559 | } | |
d1a890fa SB |
2560 | |
2561 | int | |
2562 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2563 | { | |
09c5088e | 2564 | int err, i; |
d1a890fa | 2565 | u32 ret; |
83d0feff | 2566 | unsigned long flags; |
d1a890fa | 2567 | |
fdcd79b9 | 2568 | netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," |
09c5088e SB |
2569 | " ring sizes %u %u %u\n", adapter->netdev->name, |
2570 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2571 | adapter->tx_queue[0].tx_ring.size, | |
2572 | adapter->rx_queue[0].rx_ring[0].size, | |
2573 | adapter->rx_queue[0].rx_ring[1].size); | |
2574 | ||
2575 | vmxnet3_tq_init_all(adapter); | |
2576 | err = vmxnet3_rq_init_all(adapter); | |
d1a890fa | 2577 | if (err) { |
204a6e65 SH |
2578 | netdev_err(adapter->netdev, |
2579 | "Failed to init rx queue error %d\n", err); | |
d1a890fa SB |
2580 | goto rq_err; |
2581 | } | |
2582 | ||
2583 | err = vmxnet3_request_irqs(adapter); | |
2584 | if (err) { | |
204a6e65 SH |
2585 | netdev_err(adapter->netdev, |
2586 | "Failed to setup irq for error %d\n", err); | |
d1a890fa SB |
2587 | goto irq_err; |
2588 | } | |
2589 | ||
2590 | vmxnet3_setup_driver_shared(adapter); | |
2591 | ||
115924b6 SB |
2592 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( |
2593 | adapter->shared_pa)); | |
2594 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2595 | adapter->shared_pa)); | |
83d0feff | 2596 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2597 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2598 | VMXNET3_CMD_ACTIVATE_DEV); | |
2599 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2600 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2601 | |
2602 | if (ret != 0) { | |
204a6e65 SH |
2603 | netdev_err(adapter->netdev, |
2604 | "Failed to activate dev: error %u\n", ret); | |
d1a890fa SB |
2605 | err = -EINVAL; |
2606 | goto activate_err; | |
2607 | } | |
09c5088e | 2608 | |
4edef40e SK |
2609 | vmxnet3_init_coalesce(adapter); |
2610 | ||
09c5088e SB |
2611 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2612 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2613 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2614 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2615 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2616 | (i * VMXNET3_REG_ALIGN)), | |
2617 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2618 | } | |
d1a890fa SB |
2619 | |
2620 | /* Apply the rx filter settins last. */ | |
2621 | vmxnet3_set_mc(adapter->netdev); | |
2622 | ||
2623 | /* | |
2624 | * Check link state when first activating device. It will start the | |
2625 | * tx queue if the link is up. | |
2626 | */ | |
4a1745fc | 2627 | vmxnet3_check_link(adapter, true); |
09c5088e SB |
2628 | for (i = 0; i < adapter->num_rx_queues; i++) |
2629 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2630 | vmxnet3_enable_all_intrs(adapter); |
2631 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2632 | return 0; | |
2633 | ||
2634 | activate_err: | |
2635 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2636 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2637 | vmxnet3_free_irqs(adapter); | |
2638 | irq_err: | |
2639 | rq_err: | |
2640 | /* free up buffers we allocated */ | |
09c5088e | 2641 | vmxnet3_rq_cleanup_all(adapter); |
d1a890fa SB |
2642 | return err; |
2643 | } | |
2644 | ||
2645 | ||
2646 | void | |
2647 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2648 | { | |
83d0feff SB |
2649 | unsigned long flags; |
2650 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
d1a890fa | 2651 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); |
83d0feff | 2652 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2653 | } |
2654 | ||
2655 | ||
2656 | int | |
2657 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2658 | { | |
09c5088e | 2659 | int i; |
83d0feff | 2660 | unsigned long flags; |
d1a890fa SB |
2661 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) |
2662 | return 0; | |
2663 | ||
2664 | ||
83d0feff | 2665 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2666 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2667 | VMXNET3_CMD_QUIESCE_DEV); | |
83d0feff | 2668 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2669 | vmxnet3_disable_all_intrs(adapter); |
2670 | ||
09c5088e SB |
2671 | for (i = 0; i < adapter->num_rx_queues; i++) |
2672 | napi_disable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2673 | netif_tx_disable(adapter->netdev); |
2674 | adapter->link_speed = 0; | |
2675 | netif_carrier_off(adapter->netdev); | |
2676 | ||
09c5088e SB |
2677 | vmxnet3_tq_cleanup_all(adapter); |
2678 | vmxnet3_rq_cleanup_all(adapter); | |
d1a890fa SB |
2679 | vmxnet3_free_irqs(adapter); |
2680 | return 0; | |
2681 | } | |
2682 | ||
2683 | ||
2684 | static void | |
2685 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2686 | { | |
2687 | u32 tmp; | |
2688 | ||
2689 | tmp = *(u32 *)mac; | |
2690 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2691 | ||
2692 | tmp = (mac[5] << 8) | mac[4]; | |
2693 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2694 | } | |
2695 | ||
2696 | ||
2697 | static int | |
2698 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2699 | { | |
2700 | struct sockaddr *addr = p; | |
2701 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2702 | ||
2703 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2704 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2705 | ||
2706 | return 0; | |
2707 | } | |
2708 | ||
2709 | ||
2710 | /* ==================== initialization and cleanup routines ============ */ | |
2711 | ||
2712 | static int | |
61aeecea | 2713 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter) |
d1a890fa SB |
2714 | { |
2715 | int err; | |
2716 | unsigned long mmio_start, mmio_len; | |
2717 | struct pci_dev *pdev = adapter->pdev; | |
2718 | ||
2719 | err = pci_enable_device(pdev); | |
2720 | if (err) { | |
204a6e65 | 2721 | dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err); |
d1a890fa SB |
2722 | return err; |
2723 | } | |
2724 | ||
d1a890fa SB |
2725 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, |
2726 | vmxnet3_driver_name); | |
2727 | if (err) { | |
204a6e65 SH |
2728 | dev_err(&pdev->dev, |
2729 | "Failed to request region for adapter: error %d\n", err); | |
61aeecea | 2730 | goto err_enable_device; |
d1a890fa SB |
2731 | } |
2732 | ||
2733 | pci_set_master(pdev); | |
2734 | ||
2735 | mmio_start = pci_resource_start(pdev, 0); | |
2736 | mmio_len = pci_resource_len(pdev, 0); | |
2737 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2738 | if (!adapter->hw_addr0) { | |
204a6e65 | 2739 | dev_err(&pdev->dev, "Failed to map bar0\n"); |
d1a890fa SB |
2740 | err = -EIO; |
2741 | goto err_ioremap; | |
2742 | } | |
2743 | ||
2744 | mmio_start = pci_resource_start(pdev, 1); | |
2745 | mmio_len = pci_resource_len(pdev, 1); | |
2746 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2747 | if (!adapter->hw_addr1) { | |
204a6e65 | 2748 | dev_err(&pdev->dev, "Failed to map bar1\n"); |
d1a890fa SB |
2749 | err = -EIO; |
2750 | goto err_bar1; | |
2751 | } | |
2752 | return 0; | |
2753 | ||
2754 | err_bar1: | |
2755 | iounmap(adapter->hw_addr0); | |
2756 | err_ioremap: | |
2757 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
61aeecea | 2758 | err_enable_device: |
d1a890fa SB |
2759 | pci_disable_device(pdev); |
2760 | return err; | |
2761 | } | |
2762 | ||
2763 | ||
2764 | static void | |
2765 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2766 | { | |
2767 | BUG_ON(!adapter->pdev); | |
2768 | ||
2769 | iounmap(adapter->hw_addr0); | |
2770 | iounmap(adapter->hw_addr1); | |
2771 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2772 | pci_disable_device(adapter->pdev); | |
2773 | } | |
2774 | ||
2775 | ||
2776 | static void | |
2777 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2778 | { | |
09c5088e | 2779 | size_t sz, i, ring0_size, ring1_size, comp_size; |
d1a890fa SB |
2780 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - |
2781 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2782 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2783 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2784 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2785 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2786 | ||
2787 | adapter->rx_buf_per_pkt = 1; | |
2788 | } else { | |
2789 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2790 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2791 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2792 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2793 | } | |
2794 | ||
2795 | /* | |
2796 | * for simplicity, force the ring0 size to be a multiple of | |
2797 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2798 | */ | |
2799 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
09c5088e SB |
2800 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; |
2801 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
a53255d3 | 2802 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / |
09c5088e SB |
2803 | sz * sz); |
2804 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
53831aa1 SK |
2805 | ring1_size = (ring1_size + sz - 1) / sz * sz; |
2806 | ring1_size = min_t(u32, ring1_size, VMXNET3_RX_RING2_MAX_SIZE / | |
2807 | sz * sz); | |
09c5088e SB |
2808 | comp_size = ring0_size + ring1_size; |
2809 | ||
2810 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
5e264e2b CIK |
2811 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; |
2812 | ||
09c5088e SB |
2813 | rq->rx_ring[0].size = ring0_size; |
2814 | rq->rx_ring[1].size = ring1_size; | |
2815 | rq->comp_ring.size = comp_size; | |
2816 | } | |
d1a890fa SB |
2817 | } |
2818 | ||
2819 | ||
2820 | int | |
2821 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
3c8b3efc | 2822 | u32 rx_ring_size, u32 rx_ring2_size, |
50a5ce3e | 2823 | u16 txdata_desc_size, u16 rxdata_desc_size) |
d1a890fa | 2824 | { |
09c5088e SB |
2825 | int err = 0, i; |
2826 | ||
2827 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2828 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2829 | tq->tx_ring.size = tx_ring_size; | |
2830 | tq->data_ring.size = tx_ring_size; | |
2831 | tq->comp_ring.size = tx_ring_size; | |
3c8b3efc | 2832 | tq->txdata_desc_size = txdata_desc_size; |
09c5088e SB |
2833 | tq->shared = &adapter->tqd_start[i].ctrl; |
2834 | tq->stopped = true; | |
2835 | tq->adapter = adapter; | |
2836 | tq->qid = i; | |
2837 | err = vmxnet3_tq_create(tq, adapter); | |
2838 | /* | |
2839 | * Too late to change num_tx_queues. We cannot do away with | |
2840 | * lesser number of queues than what we asked for | |
2841 | */ | |
2842 | if (err) | |
2843 | goto queue_err; | |
2844 | } | |
d1a890fa | 2845 | |
09c5088e SB |
2846 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; |
2847 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
d1a890fa | 2848 | vmxnet3_adjust_rx_ring_size(adapter); |
50a5ce3e SK |
2849 | |
2850 | adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter); | |
09c5088e SB |
2851 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2852 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2853 | /* qid and qid2 for rx queues will be assigned later when num | |
2854 | * of rx queues is finalized after allocating intrs */ | |
2855 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2856 | rq->adapter = adapter; | |
50a5ce3e | 2857 | rq->data_ring.desc_size = rxdata_desc_size; |
09c5088e SB |
2858 | err = vmxnet3_rq_create(rq, adapter); |
2859 | if (err) { | |
2860 | if (i == 0) { | |
204a6e65 SH |
2861 | netdev_err(adapter->netdev, |
2862 | "Could not allocate any rx queues. " | |
2863 | "Aborting.\n"); | |
09c5088e SB |
2864 | goto queue_err; |
2865 | } else { | |
204a6e65 SH |
2866 | netdev_info(adapter->netdev, |
2867 | "Number of rx queues changed " | |
2868 | "to : %d.\n", i); | |
09c5088e SB |
2869 | adapter->num_rx_queues = i; |
2870 | err = 0; | |
2871 | break; | |
2872 | } | |
2873 | } | |
2874 | } | |
50a5ce3e SK |
2875 | |
2876 | if (!adapter->rxdataring_enabled) | |
2877 | vmxnet3_rq_destroy_all_rxdataring(adapter); | |
2878 | ||
09c5088e SB |
2879 | return err; |
2880 | queue_err: | |
2881 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2882 | return err; |
2883 | } | |
2884 | ||
2885 | static int | |
2886 | vmxnet3_open(struct net_device *netdev) | |
2887 | { | |
2888 | struct vmxnet3_adapter *adapter; | |
09c5088e | 2889 | int err, i; |
d1a890fa SB |
2890 | |
2891 | adapter = netdev_priv(netdev); | |
2892 | ||
09c5088e SB |
2893 | for (i = 0; i < adapter->num_tx_queues; i++) |
2894 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
d1a890fa | 2895 | |
3c8b3efc SK |
2896 | if (VMXNET3_VERSION_GE_3(adapter)) { |
2897 | unsigned long flags; | |
2898 | u16 txdata_desc_size; | |
2899 | ||
2900 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2901 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2902 | VMXNET3_CMD_GET_TXDATA_DESC_SIZE); | |
2903 | txdata_desc_size = VMXNET3_READ_BAR1_REG(adapter, | |
2904 | VMXNET3_REG_CMD); | |
2905 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2906 | ||
2907 | if ((txdata_desc_size < VMXNET3_TXDATA_DESC_MIN_SIZE) || | |
2908 | (txdata_desc_size > VMXNET3_TXDATA_DESC_MAX_SIZE) || | |
2909 | (txdata_desc_size & VMXNET3_TXDATA_DESC_SIZE_MASK)) { | |
2910 | adapter->txdata_desc_size = | |
2911 | sizeof(struct Vmxnet3_TxDataDesc); | |
2912 | } else { | |
2913 | adapter->txdata_desc_size = txdata_desc_size; | |
2914 | } | |
2915 | } else { | |
2916 | adapter->txdata_desc_size = sizeof(struct Vmxnet3_TxDataDesc); | |
2917 | } | |
2918 | ||
2919 | err = vmxnet3_create_queues(adapter, | |
2920 | adapter->tx_ring_size, | |
f00e2b0a | 2921 | adapter->rx_ring_size, |
3c8b3efc | 2922 | adapter->rx_ring2_size, |
50a5ce3e SK |
2923 | adapter->txdata_desc_size, |
2924 | adapter->rxdata_desc_size); | |
d1a890fa SB |
2925 | if (err) |
2926 | goto queue_err; | |
2927 | ||
2928 | err = vmxnet3_activate_dev(adapter); | |
2929 | if (err) | |
2930 | goto activate_err; | |
2931 | ||
2932 | return 0; | |
2933 | ||
2934 | activate_err: | |
09c5088e SB |
2935 | vmxnet3_rq_destroy_all(adapter); |
2936 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2937 | queue_err: |
2938 | return err; | |
2939 | } | |
2940 | ||
2941 | ||
2942 | static int | |
2943 | vmxnet3_close(struct net_device *netdev) | |
2944 | { | |
2945 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2946 | ||
2947 | /* | |
2948 | * Reset_work may be in the middle of resetting the device, wait for its | |
2949 | * completion. | |
2950 | */ | |
2951 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 2952 | usleep_range(1000, 2000); |
d1a890fa SB |
2953 | |
2954 | vmxnet3_quiesce_dev(adapter); | |
2955 | ||
09c5088e SB |
2956 | vmxnet3_rq_destroy_all(adapter); |
2957 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2958 | |
2959 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2960 | ||
2961 | ||
2962 | return 0; | |
2963 | } | |
2964 | ||
2965 | ||
2966 | void | |
2967 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2968 | { | |
09c5088e SB |
2969 | int i; |
2970 | ||
d1a890fa SB |
2971 | /* |
2972 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2973 | * vmxnet3_close() will deadlock. | |
2974 | */ | |
2975 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2976 | ||
2977 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
09c5088e SB |
2978 | for (i = 0; i < adapter->num_rx_queues; i++) |
2979 | napi_enable(&adapter->rx_queue[i].napi); | |
1c4d5f51 NH |
2980 | /* |
2981 | * Need to clear the quiesce bit to ensure that vmxnet3_close | |
2982 | * can quiesce the device properly | |
2983 | */ | |
2984 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
d1a890fa SB |
2985 | dev_close(adapter->netdev); |
2986 | } | |
2987 | ||
2988 | ||
2989 | static int | |
2990 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2991 | { | |
2992 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2993 | int err = 0; | |
2994 | ||
d1a890fa SB |
2995 | netdev->mtu = new_mtu; |
2996 | ||
2997 | /* | |
2998 | * Reset_work may be in the middle of resetting the device, wait for its | |
2999 | * completion. | |
3000 | */ | |
3001 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 3002 | usleep_range(1000, 2000); |
d1a890fa SB |
3003 | |
3004 | if (netif_running(netdev)) { | |
3005 | vmxnet3_quiesce_dev(adapter); | |
3006 | vmxnet3_reset_dev(adapter); | |
3007 | ||
3008 | /* we need to re-create the rx queue based on the new mtu */ | |
09c5088e | 3009 | vmxnet3_rq_destroy_all(adapter); |
d1a890fa | 3010 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e | 3011 | err = vmxnet3_rq_create_all(adapter); |
d1a890fa | 3012 | if (err) { |
204a6e65 SH |
3013 | netdev_err(netdev, |
3014 | "failed to re-create rx queues, " | |
3015 | " error %d. Closing it.\n", err); | |
d1a890fa SB |
3016 | goto out; |
3017 | } | |
3018 | ||
3019 | err = vmxnet3_activate_dev(adapter); | |
3020 | if (err) { | |
204a6e65 SH |
3021 | netdev_err(netdev, |
3022 | "failed to re-activate, error %d. " | |
3023 | "Closing it\n", err); | |
d1a890fa SB |
3024 | goto out; |
3025 | } | |
3026 | } | |
3027 | ||
3028 | out: | |
3029 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3030 | if (err) | |
3031 | vmxnet3_force_close(adapter); | |
3032 | ||
3033 | return err; | |
3034 | } | |
3035 | ||
3036 | ||
3037 | static void | |
3038 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
3039 | { | |
3040 | struct net_device *netdev = adapter->netdev; | |
3041 | ||
a0d2730c | 3042 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
f646968f PM |
3043 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | |
3044 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
72e85c45 | 3045 | NETIF_F_LRO; |
a0d2730c | 3046 | if (dma64) |
ebbf9295 | 3047 | netdev->hw_features |= NETIF_F_HIGHDMA; |
72e85c45 | 3048 | netdev->vlan_features = netdev->hw_features & |
f646968f PM |
3049 | ~(NETIF_F_HW_VLAN_CTAG_TX | |
3050 | NETIF_F_HW_VLAN_CTAG_RX); | |
3051 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; | |
d1a890fa SB |
3052 | } |
3053 | ||
3054 | ||
3055 | static void | |
3056 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
3057 | { | |
3058 | u32 tmp; | |
3059 | ||
3060 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
3061 | *(u32 *)mac = tmp; | |
3062 | ||
3063 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
3064 | mac[4] = tmp & 0xff; | |
3065 | mac[5] = (tmp >> 8) & 0xff; | |
3066 | } | |
3067 | ||
09c5088e SB |
3068 | #ifdef CONFIG_PCI_MSI |
3069 | ||
3070 | /* | |
3071 | * Enable MSIx vectors. | |
3072 | * Returns : | |
25985edc | 3073 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required |
b60b869d AG |
3074 | * were enabled. |
3075 | * number of vectors which were enabled otherwise (this number is greater | |
09c5088e SB |
3076 | * than VMXNET3_LINUX_MIN_MSIX_VECT) |
3077 | */ | |
3078 | ||
3079 | static int | |
b60b869d | 3080 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec) |
09c5088e | 3081 | { |
c0a1be38 AG |
3082 | int ret = pci_enable_msix_range(adapter->pdev, |
3083 | adapter->intr.msix_entries, nvec, nvec); | |
09c5088e | 3084 | |
c0a1be38 AG |
3085 | if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) { |
3086 | dev_err(&adapter->netdev->dev, | |
3087 | "Failed to enable %d MSI-X, trying %d\n", | |
3088 | nvec, VMXNET3_LINUX_MIN_MSIX_VECT); | |
3089 | ||
3090 | ret = pci_enable_msix_range(adapter->pdev, | |
3091 | adapter->intr.msix_entries, | |
3092 | VMXNET3_LINUX_MIN_MSIX_VECT, | |
3093 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
3094 | } | |
3095 | ||
3096 | if (ret < 0) { | |
3097 | dev_err(&adapter->netdev->dev, | |
3098 | "Failed to enable MSI-X, error: %d\n", ret); | |
3099 | } | |
3100 | ||
3101 | return ret; | |
09c5088e SB |
3102 | } |
3103 | ||
3104 | ||
3105 | #endif /* CONFIG_PCI_MSI */ | |
d1a890fa SB |
3106 | |
3107 | static void | |
3108 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
3109 | { | |
3110 | u32 cfg; | |
e328d410 | 3111 | unsigned long flags; |
d1a890fa SB |
3112 | |
3113 | /* intr settings */ | |
e328d410 | 3114 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3115 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3116 | VMXNET3_CMD_GET_CONF_INTR); | |
3117 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
e328d410 | 3118 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3119 | adapter->intr.type = cfg & 0x3; |
3120 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
3121 | ||
3122 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
0bdc0d70 SB |
3123 | adapter->intr.type = VMXNET3_IT_MSIX; |
3124 | } | |
d1a890fa | 3125 | |
8f7e524c | 3126 | #ifdef CONFIG_PCI_MSI |
0bdc0d70 | 3127 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
b60b869d AG |
3128 | int i, nvec; |
3129 | ||
3130 | nvec = adapter->share_intr == VMXNET3_INTR_TXSHARE ? | |
3131 | 1 : adapter->num_tx_queues; | |
3132 | nvec += adapter->share_intr == VMXNET3_INTR_BUDDYSHARE ? | |
3133 | 0 : adapter->num_rx_queues; | |
3134 | nvec += 1; /* for link event */ | |
3135 | nvec = nvec > VMXNET3_LINUX_MIN_MSIX_VECT ? | |
3136 | nvec : VMXNET3_LINUX_MIN_MSIX_VECT; | |
3137 | ||
3138 | for (i = 0; i < nvec; i++) | |
3139 | adapter->intr.msix_entries[i].entry = i; | |
3140 | ||
3141 | nvec = vmxnet3_acquire_msix_vectors(adapter, nvec); | |
3142 | if (nvec < 0) | |
3143 | goto msix_err; | |
3144 | ||
09c5088e SB |
3145 | /* If we cannot allocate one MSIx vector per queue |
3146 | * then limit the number of rx queues to 1 | |
3147 | */ | |
b60b869d | 3148 | if (nvec == VMXNET3_LINUX_MIN_MSIX_VECT) { |
09c5088e | 3149 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE |
7e96fbf2 | 3150 | || adapter->num_rx_queues != 1) { |
09c5088e | 3151 | adapter->share_intr = VMXNET3_INTR_TXSHARE; |
204a6e65 SH |
3152 | netdev_err(adapter->netdev, |
3153 | "Number of rx queues : 1\n"); | |
09c5088e | 3154 | adapter->num_rx_queues = 1; |
09c5088e | 3155 | } |
d1a890fa | 3156 | } |
09c5088e | 3157 | |
b60b869d AG |
3158 | adapter->intr.num_intrs = nvec; |
3159 | return; | |
3160 | ||
3161 | msix_err: | |
09c5088e | 3162 | /* If we cannot allocate MSIx vectors use only one rx queue */ |
4bad25fa SH |
3163 | dev_info(&adapter->pdev->dev, |
3164 | "Failed to enable MSI-X, error %d. " | |
b60b869d | 3165 | "Limiting #rx queues to 1, try MSI.\n", nvec); |
09c5088e | 3166 | |
0bdc0d70 SB |
3167 | adapter->intr.type = VMXNET3_IT_MSI; |
3168 | } | |
d1a890fa | 3169 | |
0bdc0d70 | 3170 | if (adapter->intr.type == VMXNET3_IT_MSI) { |
b60b869d | 3171 | if (!pci_enable_msi(adapter->pdev)) { |
09c5088e | 3172 | adapter->num_rx_queues = 1; |
d1a890fa | 3173 | adapter->intr.num_intrs = 1; |
d1a890fa SB |
3174 | return; |
3175 | } | |
3176 | } | |
0bdc0d70 | 3177 | #endif /* CONFIG_PCI_MSI */ |
d1a890fa | 3178 | |
09c5088e | 3179 | adapter->num_rx_queues = 1; |
204a6e65 SH |
3180 | dev_info(&adapter->netdev->dev, |
3181 | "Using INTx interrupt, #Rx queues: 1.\n"); | |
d1a890fa SB |
3182 | adapter->intr.type = VMXNET3_IT_INTX; |
3183 | ||
3184 | /* INT-X related setting */ | |
3185 | adapter->intr.num_intrs = 1; | |
3186 | } | |
3187 | ||
3188 | ||
3189 | static void | |
3190 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
3191 | { | |
3192 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
3193 | pci_disable_msix(adapter->pdev); | |
3194 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
3195 | pci_disable_msi(adapter->pdev); | |
3196 | else | |
3197 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
3198 | } | |
3199 | ||
3200 | ||
3201 | static void | |
3202 | vmxnet3_tx_timeout(struct net_device *netdev) | |
3203 | { | |
3204 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3205 | adapter->tx_timeout_count++; | |
3206 | ||
204a6e65 | 3207 | netdev_err(adapter->netdev, "tx hang\n"); |
d1a890fa SB |
3208 | schedule_work(&adapter->work); |
3209 | } | |
3210 | ||
3211 | ||
3212 | static void | |
3213 | vmxnet3_reset_work(struct work_struct *data) | |
3214 | { | |
3215 | struct vmxnet3_adapter *adapter; | |
3216 | ||
3217 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
3218 | ||
3219 | /* if another thread is resetting the device, no need to proceed */ | |
3220 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
3221 | return; | |
3222 | ||
3223 | /* if the device is closed, we must leave it alone */ | |
d9a5f210 | 3224 | rtnl_lock(); |
d1a890fa | 3225 | if (netif_running(adapter->netdev)) { |
204a6e65 | 3226 | netdev_notice(adapter->netdev, "resetting\n"); |
d1a890fa SB |
3227 | vmxnet3_quiesce_dev(adapter); |
3228 | vmxnet3_reset_dev(adapter); | |
3229 | vmxnet3_activate_dev(adapter); | |
3230 | } else { | |
204a6e65 | 3231 | netdev_info(adapter->netdev, "already closed\n"); |
d1a890fa | 3232 | } |
d9a5f210 | 3233 | rtnl_unlock(); |
d1a890fa | 3234 | |
277964e1 | 3235 | netif_wake_queue(adapter->netdev); |
d1a890fa SB |
3236 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); |
3237 | } | |
3238 | ||
3239 | ||
3a4751a3 | 3240 | static int |
d1a890fa SB |
3241 | vmxnet3_probe_device(struct pci_dev *pdev, |
3242 | const struct pci_device_id *id) | |
3243 | { | |
3244 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
3245 | .ndo_open = vmxnet3_open, | |
3246 | .ndo_stop = vmxnet3_close, | |
3247 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
3248 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
3249 | .ndo_change_mtu = vmxnet3_change_mtu, | |
3dd7400b | 3250 | .ndo_fix_features = vmxnet3_fix_features, |
a0d2730c | 3251 | .ndo_set_features = vmxnet3_set_features, |
95305f6c | 3252 | .ndo_get_stats64 = vmxnet3_get_stats64, |
d1a890fa | 3253 | .ndo_tx_timeout = vmxnet3_tx_timeout, |
afc4b13d | 3254 | .ndo_set_rx_mode = vmxnet3_set_mc, |
d1a890fa SB |
3255 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, |
3256 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
3257 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3258 | .ndo_poll_controller = vmxnet3_netpoll, | |
3259 | #endif | |
3260 | }; | |
3261 | int err; | |
61aeecea | 3262 | bool dma64; |
d1a890fa SB |
3263 | u32 ver; |
3264 | struct net_device *netdev; | |
3265 | struct vmxnet3_adapter *adapter; | |
3266 | u8 mac[ETH_ALEN]; | |
09c5088e SB |
3267 | int size; |
3268 | int num_tx_queues; | |
3269 | int num_rx_queues; | |
3270 | ||
e154b639 SB |
3271 | if (!pci_msi_enabled()) |
3272 | enable_mq = 0; | |
3273 | ||
09c5088e SB |
3274 | #ifdef VMXNET3_RSS |
3275 | if (enable_mq) | |
3276 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3277 | (int)num_online_cpus()); | |
3278 | else | |
3279 | #endif | |
3280 | num_rx_queues = 1; | |
eebb02b1 | 3281 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
09c5088e SB |
3282 | |
3283 | if (enable_mq) | |
3284 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
3285 | (int)num_online_cpus()); | |
3286 | else | |
3287 | num_tx_queues = 1; | |
3288 | ||
eebb02b1 | 3289 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); |
09c5088e SB |
3290 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), |
3291 | max(num_tx_queues, num_rx_queues)); | |
204a6e65 SH |
3292 | dev_info(&pdev->dev, |
3293 | "# of Tx queues : %d, # of Rx queues : %d\n", | |
3294 | num_tx_queues, num_rx_queues); | |
d1a890fa | 3295 | |
41de8d4c | 3296 | if (!netdev) |
d1a890fa | 3297 | return -ENOMEM; |
d1a890fa SB |
3298 | |
3299 | pci_set_drvdata(pdev, netdev); | |
3300 | adapter = netdev_priv(netdev); | |
3301 | adapter->netdev = netdev; | |
3302 | adapter->pdev = pdev; | |
3303 | ||
f00e2b0a NH |
3304 | adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; |
3305 | adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; | |
53831aa1 | 3306 | adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; |
f00e2b0a | 3307 | |
61aeecea | 3308 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { |
3309 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
3310 | dev_err(&pdev->dev, | |
3311 | "pci_set_consistent_dma_mask failed\n"); | |
3312 | err = -EIO; | |
3313 | goto err_set_mask; | |
3314 | } | |
3315 | dma64 = true; | |
3316 | } else { | |
3317 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
3318 | dev_err(&pdev->dev, | |
3319 | "pci_set_dma_mask failed\n"); | |
3320 | err = -EIO; | |
3321 | goto err_set_mask; | |
3322 | } | |
3323 | dma64 = false; | |
3324 | } | |
3325 | ||
83d0feff | 3326 | spin_lock_init(&adapter->cmd_lock); |
b0eb57cb AK |
3327 | adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter, |
3328 | sizeof(struct vmxnet3_adapter), | |
3329 | PCI_DMA_TODEVICE); | |
5738a09d AK |
3330 | if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) { |
3331 | dev_err(&pdev->dev, "Failed to map dma\n"); | |
3332 | err = -EFAULT; | |
61aeecea | 3333 | goto err_set_mask; |
5738a09d | 3334 | } |
b0eb57cb AK |
3335 | adapter->shared = dma_alloc_coherent( |
3336 | &adapter->pdev->dev, | |
3337 | sizeof(struct Vmxnet3_DriverShared), | |
3338 | &adapter->shared_pa, GFP_KERNEL); | |
d1a890fa | 3339 | if (!adapter->shared) { |
204a6e65 | 3340 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
3341 | err = -ENOMEM; |
3342 | goto err_alloc_shared; | |
3343 | } | |
3344 | ||
09c5088e SB |
3345 | adapter->num_rx_queues = num_rx_queues; |
3346 | adapter->num_tx_queues = num_tx_queues; | |
e4fabf2b | 3347 | adapter->rx_buf_per_pkt = 1; |
09c5088e SB |
3348 | |
3349 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3350 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
b0eb57cb AK |
3351 | adapter->tqd_start = dma_alloc_coherent(&adapter->pdev->dev, size, |
3352 | &adapter->queue_desc_pa, | |
3353 | GFP_KERNEL); | |
d1a890fa SB |
3354 | |
3355 | if (!adapter->tqd_start) { | |
204a6e65 | 3356 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
3357 | err = -ENOMEM; |
3358 | goto err_alloc_queue_desc; | |
3359 | } | |
09c5088e | 3360 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + |
96800ee7 | 3361 | adapter->num_tx_queues); |
d1a890fa | 3362 | |
b0eb57cb AK |
3363 | adapter->pm_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3364 | sizeof(struct Vmxnet3_PMConf), | |
3365 | &adapter->pm_conf_pa, | |
3366 | GFP_KERNEL); | |
d1a890fa | 3367 | if (adapter->pm_conf == NULL) { |
d1a890fa SB |
3368 | err = -ENOMEM; |
3369 | goto err_alloc_pm; | |
3370 | } | |
3371 | ||
09c5088e SB |
3372 | #ifdef VMXNET3_RSS |
3373 | ||
b0eb57cb AK |
3374 | adapter->rss_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3375 | sizeof(struct UPT1_RSSConf), | |
3376 | &adapter->rss_conf_pa, | |
3377 | GFP_KERNEL); | |
09c5088e | 3378 | if (adapter->rss_conf == NULL) { |
09c5088e SB |
3379 | err = -ENOMEM; |
3380 | goto err_alloc_rss; | |
3381 | } | |
3382 | #endif /* VMXNET3_RSS */ | |
3383 | ||
61aeecea | 3384 | err = vmxnet3_alloc_pci_resources(adapter); |
d1a890fa SB |
3385 | if (err < 0) |
3386 | goto err_alloc_pci; | |
3387 | ||
3388 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
6af9d787 SK |
3389 | if (ver & (1 << VMXNET3_REV_3)) { |
3390 | VMXNET3_WRITE_BAR1_REG(adapter, | |
3391 | VMXNET3_REG_VRRS, | |
3392 | 1 << VMXNET3_REV_3); | |
3393 | adapter->version = VMXNET3_REV_3 + 1; | |
3394 | } else if (ver & (1 << VMXNET3_REV_2)) { | |
190af10f SK |
3395 | VMXNET3_WRITE_BAR1_REG(adapter, |
3396 | VMXNET3_REG_VRRS, | |
3397 | 1 << VMXNET3_REV_2); | |
3398 | adapter->version = VMXNET3_REV_2 + 1; | |
3399 | } else if (ver & (1 << VMXNET3_REV_1)) { | |
3400 | VMXNET3_WRITE_BAR1_REG(adapter, | |
3401 | VMXNET3_REG_VRRS, | |
3402 | 1 << VMXNET3_REV_1); | |
3403 | adapter->version = VMXNET3_REV_1 + 1; | |
d1a890fa | 3404 | } else { |
204a6e65 SH |
3405 | dev_err(&pdev->dev, |
3406 | "Incompatible h/w version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3407 | err = -EBUSY; |
3408 | goto err_ver; | |
3409 | } | |
45dac1d6 | 3410 | dev_dbg(&pdev->dev, "Using device version %d\n", adapter->version); |
d1a890fa SB |
3411 | |
3412 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3413 | if (ver & 1) { | |
3414 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3415 | } else { | |
204a6e65 SH |
3416 | dev_err(&pdev->dev, |
3417 | "Incompatible upt version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3418 | err = -EBUSY; |
3419 | goto err_ver; | |
3420 | } | |
3421 | ||
4edef40e SK |
3422 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3423 | adapter->coal_conf = | |
3424 | dma_alloc_coherent(&adapter->pdev->dev, | |
3425 | sizeof(struct Vmxnet3_CoalesceScheme) | |
3426 | , | |
3427 | &adapter->coal_conf_pa, | |
3428 | GFP_KERNEL); | |
3429 | if (!adapter->coal_conf) { | |
3430 | err = -ENOMEM; | |
3431 | goto err_ver; | |
3432 | } | |
4edef40e SK |
3433 | adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED; |
3434 | adapter->default_coal_mode = true; | |
3435 | } | |
3436 | ||
e101e7dd | 3437 | SET_NETDEV_DEV(netdev, &pdev->dev); |
d1a890fa SB |
3438 | vmxnet3_declare_features(adapter, dma64); |
3439 | ||
50a5ce3e SK |
3440 | adapter->rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ? |
3441 | VMXNET3_DEF_RXDATA_DESC_SIZE : 0; | |
3442 | ||
4db37a78 SH |
3443 | if (adapter->num_tx_queues == adapter->num_rx_queues) |
3444 | adapter->share_intr = VMXNET3_INTR_BUDDYSHARE; | |
3445 | else | |
09c5088e SB |
3446 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; |
3447 | ||
d1a890fa SB |
3448 | vmxnet3_alloc_intr_resources(adapter); |
3449 | ||
09c5088e SB |
3450 | #ifdef VMXNET3_RSS |
3451 | if (adapter->num_rx_queues > 1 && | |
3452 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3453 | adapter->rss = true; | |
7db11f75 SH |
3454 | netdev->hw_features |= NETIF_F_RXHASH; |
3455 | netdev->features |= NETIF_F_RXHASH; | |
204a6e65 | 3456 | dev_dbg(&pdev->dev, "RSS is enabled.\n"); |
09c5088e SB |
3457 | } else { |
3458 | adapter->rss = false; | |
3459 | } | |
3460 | #endif | |
3461 | ||
d1a890fa SB |
3462 | vmxnet3_read_mac_addr(adapter, mac); |
3463 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3464 | ||
3465 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
d1a890fa | 3466 | vmxnet3_set_ethtool_ops(netdev); |
09c5088e | 3467 | netdev->watchdog_timeo = 5 * HZ; |
d1a890fa | 3468 | |
d0c2c997 JW |
3469 | /* MTU range: 60 - 9000 */ |
3470 | netdev->min_mtu = VMXNET3_MIN_MTU; | |
3471 | netdev->max_mtu = VMXNET3_MAX_MTU; | |
3472 | ||
d1a890fa | 3473 | INIT_WORK(&adapter->work, vmxnet3_reset_work); |
e3bc4ffb | 3474 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); |
d1a890fa | 3475 | |
09c5088e SB |
3476 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
3477 | int i; | |
3478 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3479 | netif_napi_add(adapter->netdev, | |
3480 | &adapter->rx_queue[i].napi, | |
3481 | vmxnet3_poll_rx_only, 64); | |
3482 | } | |
3483 | } else { | |
3484 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3485 | vmxnet3_poll, 64); | |
3486 | } | |
3487 | ||
3488 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3489 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3490 | ||
6cdd20c3 | 3491 | netif_carrier_off(netdev); |
d1a890fa SB |
3492 | err = register_netdev(netdev); |
3493 | ||
3494 | if (err) { | |
204a6e65 | 3495 | dev_err(&pdev->dev, "Failed to register adapter\n"); |
d1a890fa SB |
3496 | goto err_register; |
3497 | } | |
3498 | ||
4a1745fc | 3499 | vmxnet3_check_link(adapter, false); |
d1a890fa SB |
3500 | return 0; |
3501 | ||
3502 | err_register: | |
4edef40e SK |
3503 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3504 | dma_free_coherent(&adapter->pdev->dev, | |
3505 | sizeof(struct Vmxnet3_CoalesceScheme), | |
3506 | adapter->coal_conf, adapter->coal_conf_pa); | |
3507 | } | |
d1a890fa SB |
3508 | vmxnet3_free_intr_resources(adapter); |
3509 | err_ver: | |
3510 | vmxnet3_free_pci_resources(adapter); | |
3511 | err_alloc_pci: | |
09c5088e | 3512 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3513 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3514 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e SB |
3515 | err_alloc_rss: |
3516 | #endif | |
b0eb57cb AK |
3517 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3518 | adapter->pm_conf, adapter->pm_conf_pa); | |
d1a890fa | 3519 | err_alloc_pm: |
b0eb57cb AK |
3520 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3521 | adapter->queue_desc_pa); | |
d1a890fa | 3522 | err_alloc_queue_desc: |
b0eb57cb AK |
3523 | dma_free_coherent(&adapter->pdev->dev, |
3524 | sizeof(struct Vmxnet3_DriverShared), | |
3525 | adapter->shared, adapter->shared_pa); | |
d1a890fa | 3526 | err_alloc_shared: |
b0eb57cb AK |
3527 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, |
3528 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
61aeecea | 3529 | err_set_mask: |
d1a890fa SB |
3530 | free_netdev(netdev); |
3531 | return err; | |
3532 | } | |
3533 | ||
3534 | ||
3a4751a3 | 3535 | static void |
d1a890fa SB |
3536 | vmxnet3_remove_device(struct pci_dev *pdev) |
3537 | { | |
3538 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3539 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
09c5088e SB |
3540 | int size = 0; |
3541 | int num_rx_queues; | |
3542 | ||
3543 | #ifdef VMXNET3_RSS | |
3544 | if (enable_mq) | |
3545 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3546 | (int)num_online_cpus()); | |
3547 | else | |
3548 | #endif | |
3549 | num_rx_queues = 1; | |
eebb02b1 | 3550 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
d1a890fa | 3551 | |
23f333a2 | 3552 | cancel_work_sync(&adapter->work); |
d1a890fa SB |
3553 | |
3554 | unregister_netdev(netdev); | |
3555 | ||
3556 | vmxnet3_free_intr_resources(adapter); | |
3557 | vmxnet3_free_pci_resources(adapter); | |
4edef40e SK |
3558 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3559 | dma_free_coherent(&adapter->pdev->dev, | |
3560 | sizeof(struct Vmxnet3_CoalesceScheme), | |
3561 | adapter->coal_conf, adapter->coal_conf_pa); | |
3562 | } | |
09c5088e | 3563 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3564 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3565 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e | 3566 | #endif |
b0eb57cb AK |
3567 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3568 | adapter->pm_conf, adapter->pm_conf_pa); | |
09c5088e SB |
3569 | |
3570 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3571 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
b0eb57cb AK |
3572 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3573 | adapter->queue_desc_pa); | |
3574 | dma_free_coherent(&adapter->pdev->dev, | |
3575 | sizeof(struct Vmxnet3_DriverShared), | |
3576 | adapter->shared, adapter->shared_pa); | |
3577 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, | |
3578 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
d1a890fa SB |
3579 | free_netdev(netdev); |
3580 | } | |
3581 | ||
e9ba47bf SB |
3582 | static void vmxnet3_shutdown_device(struct pci_dev *pdev) |
3583 | { | |
3584 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3585 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3586 | unsigned long flags; | |
3587 | ||
3588 | /* Reset_work may be in the middle of resetting the device, wait for its | |
3589 | * completion. | |
3590 | */ | |
3591 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 3592 | usleep_range(1000, 2000); |
e9ba47bf SB |
3593 | |
3594 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, | |
3595 | &adapter->state)) { | |
3596 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3597 | return; | |
3598 | } | |
3599 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3600 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3601 | VMXNET3_CMD_QUIESCE_DEV); | |
3602 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3603 | vmxnet3_disable_all_intrs(adapter); | |
3604 | ||
3605 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3606 | } | |
3607 | ||
d1a890fa SB |
3608 | |
3609 | #ifdef CONFIG_PM | |
3610 | ||
3611 | static int | |
3612 | vmxnet3_suspend(struct device *device) | |
3613 | { | |
3614 | struct pci_dev *pdev = to_pci_dev(device); | |
3615 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3616 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3617 | struct Vmxnet3_PMConf *pmConf; | |
3618 | struct ethhdr *ehdr; | |
3619 | struct arphdr *ahdr; | |
3620 | u8 *arpreq; | |
3621 | struct in_device *in_dev; | |
3622 | struct in_ifaddr *ifa; | |
83d0feff | 3623 | unsigned long flags; |
d1a890fa SB |
3624 | int i = 0; |
3625 | ||
3626 | if (!netif_running(netdev)) | |
3627 | return 0; | |
3628 | ||
51956cd6 SB |
3629 | for (i = 0; i < adapter->num_rx_queues; i++) |
3630 | napi_disable(&adapter->rx_queue[i].napi); | |
3631 | ||
d1a890fa SB |
3632 | vmxnet3_disable_all_intrs(adapter); |
3633 | vmxnet3_free_irqs(adapter); | |
3634 | vmxnet3_free_intr_resources(adapter); | |
3635 | ||
3636 | netif_device_detach(netdev); | |
09c5088e | 3637 | netif_tx_stop_all_queues(netdev); |
d1a890fa SB |
3638 | |
3639 | /* Create wake-up filters. */ | |
3640 | pmConf = adapter->pm_conf; | |
3641 | memset(pmConf, 0, sizeof(*pmConf)); | |
3642 | ||
3643 | if (adapter->wol & WAKE_UCAST) { | |
3644 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3645 | pmConf->filters[i].maskSize = 1; | |
3646 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3647 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3648 | ||
3843e515 | 3649 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3650 | i++; |
3651 | } | |
3652 | ||
3653 | if (adapter->wol & WAKE_ARP) { | |
2638eb8b FW |
3654 | rcu_read_lock(); |
3655 | ||
3656 | in_dev = __in_dev_get_rcu(netdev); | |
3657 | if (!in_dev) { | |
3658 | rcu_read_unlock(); | |
d1a890fa | 3659 | goto skip_arp; |
2638eb8b | 3660 | } |
d1a890fa | 3661 | |
2638eb8b FW |
3662 | ifa = rcu_dereference(in_dev->ifa_list); |
3663 | if (!ifa) { | |
3664 | rcu_read_unlock(); | |
d1a890fa | 3665 | goto skip_arp; |
2638eb8b | 3666 | } |
d1a890fa SB |
3667 | |
3668 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3669 | sizeof(struct arphdr) + /* ARP header */ | |
3670 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3671 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3672 | pmConf->filters[i].maskSize = | |
3673 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3674 | ||
3675 | /* ETH_P_ARP in Ethernet header. */ | |
3676 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3677 | ehdr->h_proto = htons(ETH_P_ARP); | |
3678 | ||
3679 | /* ARPOP_REQUEST in ARP header. */ | |
3680 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3681 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3682 | arpreq = (u8 *)(ahdr + 1); | |
3683 | ||
3684 | /* The Unicast IPv4 address in 'tip' field. */ | |
3685 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
2638eb8b FW |
3686 | *(__be32 *)arpreq = ifa->ifa_address; |
3687 | ||
3688 | rcu_read_unlock(); | |
d1a890fa SB |
3689 | |
3690 | /* The mask for the relevant bits. */ | |
3691 | pmConf->filters[i].mask[0] = 0x00; | |
3692 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3693 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3694 | pmConf->filters[i].mask[3] = 0x00; | |
3695 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3696 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
d1a890fa | 3697 | |
3843e515 | 3698 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3699 | i++; |
3700 | } | |
3701 | ||
3702 | skip_arp: | |
3703 | if (adapter->wol & WAKE_MAGIC) | |
3843e515 | 3704 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; |
d1a890fa SB |
3705 | |
3706 | pmConf->numFilters = i; | |
3707 | ||
115924b6 SB |
3708 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3709 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3710 | *pmConf)); | |
b0eb57cb AK |
3711 | adapter->shared->devRead.pmConfDesc.confPA = |
3712 | cpu_to_le64(adapter->pm_conf_pa); | |
d1a890fa | 3713 | |
83d0feff | 3714 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3715 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3716 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3717 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3718 | |
3719 | pci_save_state(pdev); | |
3720 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3721 | adapter->wol); | |
3722 | pci_disable_device(pdev); | |
3723 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3724 | ||
3725 | return 0; | |
3726 | } | |
3727 | ||
3728 | ||
3729 | static int | |
3730 | vmxnet3_resume(struct device *device) | |
3731 | { | |
5ec82c1e | 3732 | int err; |
83d0feff | 3733 | unsigned long flags; |
d1a890fa SB |
3734 | struct pci_dev *pdev = to_pci_dev(device); |
3735 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3736 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa SB |
3737 | |
3738 | if (!netif_running(netdev)) | |
3739 | return 0; | |
3740 | ||
d1a890fa SB |
3741 | pci_set_power_state(pdev, PCI_D0); |
3742 | pci_restore_state(pdev); | |
3743 | err = pci_enable_device_mem(pdev); | |
3744 | if (err != 0) | |
3745 | return err; | |
3746 | ||
3747 | pci_enable_wake(pdev, PCI_D0, 0); | |
3748 | ||
5ec82c1e SK |
3749 | vmxnet3_alloc_intr_resources(adapter); |
3750 | ||
3751 | /* During hibernate and suspend, device has to be reinitialized as the | |
3752 | * device state need not be preserved. | |
3753 | */ | |
3754 | ||
3755 | /* Need not check adapter state as other reset tasks cannot run during | |
3756 | * device resume. | |
3757 | */ | |
83d0feff | 3758 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 3759 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
5ec82c1e | 3760 | VMXNET3_CMD_QUIESCE_DEV); |
83d0feff | 3761 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
5ec82c1e SK |
3762 | vmxnet3_tq_cleanup_all(adapter); |
3763 | vmxnet3_rq_cleanup_all(adapter); | |
3764 | ||
3765 | vmxnet3_reset_dev(adapter); | |
3766 | err = vmxnet3_activate_dev(adapter); | |
3767 | if (err != 0) { | |
3768 | netdev_err(netdev, | |
3769 | "failed to re-activate on resume, error: %d", err); | |
3770 | vmxnet3_force_close(adapter); | |
3771 | return err; | |
3772 | } | |
3773 | netif_device_attach(netdev); | |
d1a890fa SB |
3774 | |
3775 | return 0; | |
3776 | } | |
3777 | ||
47145210 | 3778 | static const struct dev_pm_ops vmxnet3_pm_ops = { |
d1a890fa SB |
3779 | .suspend = vmxnet3_suspend, |
3780 | .resume = vmxnet3_resume, | |
5ec82c1e SK |
3781 | .freeze = vmxnet3_suspend, |
3782 | .restore = vmxnet3_resume, | |
d1a890fa SB |
3783 | }; |
3784 | #endif | |
3785 | ||
3786 | static struct pci_driver vmxnet3_driver = { | |
3787 | .name = vmxnet3_driver_name, | |
3788 | .id_table = vmxnet3_pciid_table, | |
3789 | .probe = vmxnet3_probe_device, | |
3a4751a3 | 3790 | .remove = vmxnet3_remove_device, |
e9ba47bf | 3791 | .shutdown = vmxnet3_shutdown_device, |
d1a890fa SB |
3792 | #ifdef CONFIG_PM |
3793 | .driver.pm = &vmxnet3_pm_ops, | |
3794 | #endif | |
3795 | }; | |
3796 | ||
3797 | ||
3798 | static int __init | |
3799 | vmxnet3_init_module(void) | |
3800 | { | |
204a6e65 | 3801 | pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC, |
d1a890fa SB |
3802 | VMXNET3_DRIVER_VERSION_REPORT); |
3803 | return pci_register_driver(&vmxnet3_driver); | |
3804 | } | |
3805 | ||
3806 | module_init(vmxnet3_init_module); | |
3807 | ||
3808 | ||
3809 | static void | |
3810 | vmxnet3_exit_module(void) | |
3811 | { | |
3812 | pci_unregister_driver(&vmxnet3_driver); | |
3813 | } | |
3814 | ||
3815 | module_exit(vmxnet3_exit_module); | |
3816 | ||
3817 | MODULE_AUTHOR("VMware, Inc."); | |
3818 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3819 | MODULE_LICENSE("GPL v2"); | |
3820 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |