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d1a890fa SB |
1 | /* |
2 | * Linux driver for VMware's vmxnet3 ethernet NIC. | |
3 | * | |
4 | * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; version 2 of the License and no later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more | |
14 | * details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution in | |
21 | * the file called "COPYING". | |
22 | * | |
23 | * Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com> | |
24 | * | |
25 | */ | |
26 | ||
9d9779e7 | 27 | #include <linux/module.h> |
b038b040 SR |
28 | #include <net/ip6_checksum.h> |
29 | ||
d1a890fa SB |
30 | #include "vmxnet3_int.h" |
31 | ||
32 | char vmxnet3_driver_name[] = "vmxnet3"; | |
33 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
34 | ||
d1a890fa SB |
35 | /* |
36 | * PCI Device ID Table | |
37 | * Last entry must be all 0s | |
38 | */ | |
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 SB |
371 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { |
372 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( | |
373 | &gdesc->tcd), tq, adapter->pdev, | |
374 | adapter); | |
d1a890fa SB |
375 | |
376 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
377 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
378 | } | |
379 | ||
380 | if (completed) { | |
381 | spin_lock(&tq->tx_lock); | |
382 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
383 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
384 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
385 | netif_carrier_ok(adapter->netdev))) { | |
386 | vmxnet3_tq_wake(tq, adapter); | |
387 | } | |
388 | spin_unlock(&tq->tx_lock); | |
389 | } | |
390 | return completed; | |
391 | } | |
392 | ||
393 | ||
394 | static void | |
395 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
396 | struct vmxnet3_adapter *adapter) | |
397 | { | |
398 | int i; | |
399 | ||
400 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
401 | struct vmxnet3_tx_buf_info *tbi; | |
d1a890fa SB |
402 | |
403 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
d1a890fa SB |
404 | |
405 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
406 | if (tbi->skb) { | |
407 | dev_kfree_skb_any(tbi->skb); | |
408 | tbi->skb = NULL; | |
409 | } | |
410 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
411 | } | |
412 | ||
413 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
414 | for (i = 0; i < tq->tx_ring.size; i++) { | |
415 | BUG_ON(tq->buf_info[i].skb != NULL || | |
416 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
417 | } | |
418 | ||
419 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
420 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
421 | ||
422 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
423 | tq->comp_ring.next2proc = 0; | |
424 | } | |
425 | ||
426 | ||
09c5088e | 427 | static void |
d1a890fa SB |
428 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, |
429 | struct vmxnet3_adapter *adapter) | |
430 | { | |
431 | if (tq->tx_ring.base) { | |
b0eb57cb AK |
432 | dma_free_coherent(&adapter->pdev->dev, tq->tx_ring.size * |
433 | sizeof(struct Vmxnet3_TxDesc), | |
434 | tq->tx_ring.base, tq->tx_ring.basePA); | |
d1a890fa SB |
435 | tq->tx_ring.base = NULL; |
436 | } | |
437 | if (tq->data_ring.base) { | |
b0eb57cb AK |
438 | dma_free_coherent(&adapter->pdev->dev, tq->data_ring.size * |
439 | sizeof(struct Vmxnet3_TxDataDesc), | |
440 | tq->data_ring.base, tq->data_ring.basePA); | |
d1a890fa SB |
441 | tq->data_ring.base = NULL; |
442 | } | |
443 | if (tq->comp_ring.base) { | |
b0eb57cb AK |
444 | dma_free_coherent(&adapter->pdev->dev, tq->comp_ring.size * |
445 | sizeof(struct Vmxnet3_TxCompDesc), | |
446 | tq->comp_ring.base, tq->comp_ring.basePA); | |
d1a890fa SB |
447 | tq->comp_ring.base = NULL; |
448 | } | |
b0eb57cb AK |
449 | if (tq->buf_info) { |
450 | dma_free_coherent(&adapter->pdev->dev, | |
451 | tq->tx_ring.size * sizeof(tq->buf_info[0]), | |
452 | tq->buf_info, tq->buf_info_pa); | |
453 | tq->buf_info = NULL; | |
454 | } | |
d1a890fa SB |
455 | } |
456 | ||
457 | ||
09c5088e SB |
458 | /* Destroy all tx queues */ |
459 | void | |
460 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
461 | { | |
462 | int i; | |
463 | ||
464 | for (i = 0; i < adapter->num_tx_queues; i++) | |
465 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
466 | } | |
467 | ||
468 | ||
d1a890fa SB |
469 | static void |
470 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
471 | struct vmxnet3_adapter *adapter) | |
472 | { | |
473 | int i; | |
474 | ||
475 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
476 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
477 | sizeof(struct Vmxnet3_TxDesc)); | |
478 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
479 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
480 | ||
481 | memset(tq->data_ring.base, 0, tq->data_ring.size * | |
482 | sizeof(struct Vmxnet3_TxDataDesc)); | |
483 | ||
484 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
485 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
486 | sizeof(struct Vmxnet3_TxCompDesc)); | |
487 | tq->comp_ring.next2proc = 0; | |
488 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
489 | ||
490 | /* reset the bookkeeping data */ | |
491 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
492 | for (i = 0; i < tq->tx_ring.size; i++) | |
493 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
494 | ||
495 | /* stats are not reset */ | |
496 | } | |
497 | ||
498 | ||
499 | static int | |
500 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
501 | struct vmxnet3_adapter *adapter) | |
502 | { | |
b0eb57cb AK |
503 | size_t sz; |
504 | ||
d1a890fa SB |
505 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || |
506 | tq->comp_ring.base || tq->buf_info); | |
507 | ||
b0eb57cb AK |
508 | tq->tx_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
509 | tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc), | |
510 | &tq->tx_ring.basePA, GFP_KERNEL); | |
d1a890fa | 511 | if (!tq->tx_ring.base) { |
204a6e65 | 512 | netdev_err(adapter->netdev, "failed to allocate tx ring\n"); |
d1a890fa SB |
513 | goto err; |
514 | } | |
515 | ||
b0eb57cb AK |
516 | tq->data_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
517 | tq->data_ring.size * sizeof(struct Vmxnet3_TxDataDesc), | |
518 | &tq->data_ring.basePA, GFP_KERNEL); | |
d1a890fa | 519 | if (!tq->data_ring.base) { |
204a6e65 | 520 | netdev_err(adapter->netdev, "failed to allocate data ring\n"); |
d1a890fa SB |
521 | goto err; |
522 | } | |
523 | ||
b0eb57cb AK |
524 | tq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
525 | tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc), | |
526 | &tq->comp_ring.basePA, GFP_KERNEL); | |
d1a890fa | 527 | if (!tq->comp_ring.base) { |
204a6e65 | 528 | netdev_err(adapter->netdev, "failed to allocate tx comp ring\n"); |
d1a890fa SB |
529 | goto err; |
530 | } | |
531 | ||
b0eb57cb AK |
532 | sz = tq->tx_ring.size * sizeof(tq->buf_info[0]); |
533 | tq->buf_info = dma_zalloc_coherent(&adapter->pdev->dev, sz, | |
534 | &tq->buf_info_pa, GFP_KERNEL); | |
e404decb | 535 | if (!tq->buf_info) |
d1a890fa | 536 | goto err; |
d1a890fa SB |
537 | |
538 | return 0; | |
539 | ||
540 | err: | |
541 | vmxnet3_tq_destroy(tq, adapter); | |
542 | return -ENOMEM; | |
543 | } | |
544 | ||
09c5088e SB |
545 | static void |
546 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
547 | { | |
548 | int i; | |
549 | ||
550 | for (i = 0; i < adapter->num_tx_queues; i++) | |
551 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
552 | } | |
d1a890fa SB |
553 | |
554 | /* | |
555 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
556 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
557 | * are allocated or allocation fails | |
558 | */ | |
559 | ||
560 | static int | |
561 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
562 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
563 | { | |
564 | int num_allocated = 0; | |
565 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
566 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
567 | u32 val; | |
568 | ||
5318d809 | 569 | while (num_allocated <= num_to_alloc) { |
d1a890fa SB |
570 | struct vmxnet3_rx_buf_info *rbi; |
571 | union Vmxnet3_GenericDesc *gd; | |
572 | ||
573 | rbi = rbi_base + ring->next2fill; | |
574 | gd = ring->base + ring->next2fill; | |
575 | ||
576 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
577 | if (rbi->skb == NULL) { | |
0d735f13 SH |
578 | rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev, |
579 | rbi->len, | |
580 | GFP_KERNEL); | |
d1a890fa SB |
581 | if (unlikely(rbi->skb == NULL)) { |
582 | rq->stats.rx_buf_alloc_failure++; | |
583 | break; | |
584 | } | |
d1a890fa | 585 | |
b0eb57cb AK |
586 | rbi->dma_addr = dma_map_single( |
587 | &adapter->pdev->dev, | |
d1a890fa SB |
588 | rbi->skb->data, rbi->len, |
589 | PCI_DMA_FROMDEVICE); | |
590 | } else { | |
591 | /* rx buffer skipped by the device */ | |
592 | } | |
593 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
594 | } else { | |
595 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
596 | rbi->len != PAGE_SIZE); | |
597 | ||
598 | if (rbi->page == NULL) { | |
599 | rbi->page = alloc_page(GFP_ATOMIC); | |
600 | if (unlikely(rbi->page == NULL)) { | |
601 | rq->stats.rx_buf_alloc_failure++; | |
602 | break; | |
603 | } | |
b0eb57cb AK |
604 | rbi->dma_addr = dma_map_page( |
605 | &adapter->pdev->dev, | |
d1a890fa SB |
606 | rbi->page, 0, PAGE_SIZE, |
607 | PCI_DMA_FROMDEVICE); | |
608 | } else { | |
609 | /* rx buffers skipped by the device */ | |
610 | } | |
611 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
612 | } | |
613 | ||
614 | BUG_ON(rbi->dma_addr == 0); | |
115924b6 | 615 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); |
5318d809 | 616 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) |
115924b6 | 617 | | val | rbi->len); |
d1a890fa | 618 | |
5318d809 SB |
619 | /* Fill the last buffer but dont mark it ready, or else the |
620 | * device will think that the queue is full */ | |
621 | if (num_allocated == num_to_alloc) | |
622 | break; | |
623 | ||
624 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
d1a890fa SB |
625 | num_allocated++; |
626 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
627 | } | |
d1a890fa | 628 | |
fdcd79b9 | 629 | netdev_dbg(adapter->netdev, |
69b9a712 SH |
630 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n", |
631 | num_allocated, ring->next2fill, ring->next2comp); | |
d1a890fa SB |
632 | |
633 | /* so that the device can distinguish a full ring and an empty ring */ | |
634 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
635 | ||
636 | return num_allocated; | |
637 | } | |
638 | ||
639 | ||
640 | static void | |
641 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
642 | struct vmxnet3_rx_buf_info *rbi) | |
643 | { | |
644 | struct skb_frag_struct *frag = skb_shinfo(skb)->frags + | |
645 | skb_shinfo(skb)->nr_frags; | |
646 | ||
647 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
648 | ||
0e0634d2 | 649 | __skb_frag_set_page(frag, rbi->page); |
d1a890fa | 650 | frag->page_offset = 0; |
9e903e08 ED |
651 | skb_frag_size_set(frag, rcd->len); |
652 | skb->data_len += rcd->len; | |
5e6c355c | 653 | skb->truesize += PAGE_SIZE; |
d1a890fa SB |
654 | skb_shinfo(skb)->nr_frags++; |
655 | } | |
656 | ||
657 | ||
658 | static void | |
659 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, | |
660 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
661 | struct vmxnet3_adapter *adapter) | |
662 | { | |
663 | u32 dw2, len; | |
664 | unsigned long buf_offset; | |
665 | int i; | |
666 | union Vmxnet3_GenericDesc *gdesc; | |
667 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
668 | ||
669 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
670 | ||
671 | /* use the previous gen bit for the SOP desc */ | |
672 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
673 | ||
674 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
675 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
676 | ||
677 | /* no need to map the buffer if headers are copied */ | |
678 | if (ctx->copy_size) { | |
115924b6 | 679 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + |
d1a890fa | 680 | tq->tx_ring.next2fill * |
115924b6 SB |
681 | sizeof(struct Vmxnet3_TxDataDesc)); |
682 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); | |
d1a890fa SB |
683 | ctx->sop_txd->dword[3] = 0; |
684 | ||
685 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
686 | tbi->map_type = VMXNET3_MAP_NONE; | |
687 | ||
fdcd79b9 | 688 | netdev_dbg(adapter->netdev, |
f6965582 | 689 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
690 | tq->tx_ring.next2fill, |
691 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
d1a890fa SB |
692 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); |
693 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
694 | ||
695 | /* use the right gen for non-SOP desc */ | |
696 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
697 | } | |
698 | ||
699 | /* linear part can use multiple tx desc if it's big */ | |
700 | len = skb_headlen(skb) - ctx->copy_size; | |
701 | buf_offset = ctx->copy_size; | |
702 | while (len) { | |
703 | u32 buf_size; | |
704 | ||
1f4b1612 BD |
705 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { |
706 | buf_size = len; | |
707 | dw2 |= len; | |
708 | } else { | |
709 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
710 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
711 | } | |
d1a890fa SB |
712 | |
713 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
714 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
b0eb57cb | 715 | tbi->dma_addr = dma_map_single(&adapter->pdev->dev, |
d1a890fa SB |
716 | skb->data + buf_offset, buf_size, |
717 | PCI_DMA_TODEVICE); | |
718 | ||
1f4b1612 | 719 | tbi->len = buf_size; |
d1a890fa SB |
720 | |
721 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
722 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
723 | ||
115924b6 | 724 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
1f4b1612 | 725 | gdesc->dword[2] = cpu_to_le32(dw2); |
d1a890fa SB |
726 | gdesc->dword[3] = 0; |
727 | ||
fdcd79b9 | 728 | netdev_dbg(adapter->netdev, |
f6965582 | 729 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
730 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
731 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
732 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
733 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
734 | ||
735 | len -= buf_size; | |
736 | buf_offset += buf_size; | |
737 | } | |
738 | ||
739 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 740 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; |
a4d7e485 | 741 | u32 buf_size; |
d1a890fa | 742 | |
a4d7e485 ED |
743 | buf_offset = 0; |
744 | len = skb_frag_size(frag); | |
745 | while (len) { | |
746 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
747 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
748 | buf_size = len; | |
749 | dw2 |= len; | |
750 | } else { | |
751 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
752 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
753 | } | |
754 | tbi->map_type = VMXNET3_MAP_PAGE; | |
755 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
756 | buf_offset, buf_size, | |
757 | DMA_TO_DEVICE); | |
d1a890fa | 758 | |
a4d7e485 | 759 | tbi->len = buf_size; |
d1a890fa | 760 | |
a4d7e485 ED |
761 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; |
762 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
d1a890fa | 763 | |
a4d7e485 ED |
764 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
765 | gdesc->dword[2] = cpu_to_le32(dw2); | |
766 | gdesc->dword[3] = 0; | |
d1a890fa | 767 | |
fdcd79b9 | 768 | netdev_dbg(adapter->netdev, |
8b429468 | 769 | "txd[%u]: 0x%llx %u %u\n", |
a4d7e485 ED |
770 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
771 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
772 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
773 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
774 | ||
775 | len -= buf_size; | |
776 | buf_offset += buf_size; | |
777 | } | |
d1a890fa SB |
778 | } |
779 | ||
780 | ctx->eop_txd = gdesc; | |
781 | ||
782 | /* set the last buf_info for the pkt */ | |
783 | tbi->skb = skb; | |
784 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
785 | } | |
786 | ||
787 | ||
09c5088e SB |
788 | /* Init all tx queues */ |
789 | static void | |
790 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
791 | { | |
792 | int i; | |
793 | ||
794 | for (i = 0; i < adapter->num_tx_queues; i++) | |
795 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
796 | } | |
797 | ||
798 | ||
d1a890fa SB |
799 | /* |
800 | * parse and copy relevant protocol headers: | |
801 | * For a tso pkt, relevant headers are L2/3/4 including options | |
802 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
803 | * if it's a TCP/UDP pkt | |
804 | * | |
805 | * Returns: | |
806 | * -1: error happens during parsing | |
807 | * 0: protocol headers parsed, but too big to be copied | |
808 | * 1: protocol headers parsed and copied | |
809 | * | |
810 | * Other effects: | |
811 | * 1. related *ctx fields are updated. | |
812 | * 2. ctx->copy_size is # of bytes copied | |
813 | * 3. the portion copied is guaranteed to be in the linear part | |
814 | * | |
815 | */ | |
816 | static int | |
817 | vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
818 | struct vmxnet3_tx_ctx *ctx, | |
819 | struct vmxnet3_adapter *adapter) | |
820 | { | |
821 | struct Vmxnet3_TxDataDesc *tdd; | |
822 | ||
0d0b1672 | 823 | if (ctx->mss) { /* TSO */ |
d1a890fa | 824 | ctx->eth_ip_hdr_size = skb_transport_offset(skb); |
8bca5d1e | 825 | ctx->l4_hdr_size = tcp_hdrlen(skb); |
d1a890fa SB |
826 | ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size; |
827 | } else { | |
d1a890fa | 828 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
0d0b1672 | 829 | ctx->eth_ip_hdr_size = skb_checksum_start_offset(skb); |
d1a890fa SB |
830 | |
831 | if (ctx->ipv4) { | |
8bca5d1e ED |
832 | const struct iphdr *iph = ip_hdr(skb); |
833 | ||
39d4a96f | 834 | if (iph->protocol == IPPROTO_TCP) |
8bca5d1e | 835 | ctx->l4_hdr_size = tcp_hdrlen(skb); |
39d4a96f | 836 | else if (iph->protocol == IPPROTO_UDP) |
f6a1ad42 | 837 | ctx->l4_hdr_size = sizeof(struct udphdr); |
39d4a96f | 838 | else |
d1a890fa | 839 | ctx->l4_hdr_size = 0; |
d1a890fa SB |
840 | } else { |
841 | /* for simplicity, don't copy L4 headers */ | |
842 | ctx->l4_hdr_size = 0; | |
843 | } | |
b203262d NH |
844 | ctx->copy_size = min(ctx->eth_ip_hdr_size + |
845 | ctx->l4_hdr_size, skb->len); | |
d1a890fa SB |
846 | } else { |
847 | ctx->eth_ip_hdr_size = 0; | |
848 | ctx->l4_hdr_size = 0; | |
849 | /* copy as much as allowed */ | |
850 | ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE | |
851 | , skb_headlen(skb)); | |
852 | } | |
853 | ||
854 | /* make sure headers are accessible directly */ | |
855 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
856 | goto err; | |
857 | } | |
858 | ||
859 | if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) { | |
860 | tq->stats.oversized_hdr++; | |
861 | ctx->copy_size = 0; | |
862 | return 0; | |
863 | } | |
864 | ||
865 | tdd = tq->data_ring.base + tq->tx_ring.next2fill; | |
866 | ||
867 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
fdcd79b9 | 868 | netdev_dbg(adapter->netdev, |
f6965582 | 869 | "copy %u bytes to dataRing[%u]\n", |
d1a890fa SB |
870 | ctx->copy_size, tq->tx_ring.next2fill); |
871 | return 1; | |
872 | ||
873 | err: | |
874 | return -1; | |
875 | } | |
876 | ||
877 | ||
878 | static void | |
879 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
880 | struct vmxnet3_tx_ctx *ctx) | |
881 | { | |
8bca5d1e ED |
882 | struct tcphdr *tcph = tcp_hdr(skb); |
883 | ||
d1a890fa | 884 | if (ctx->ipv4) { |
8bca5d1e ED |
885 | struct iphdr *iph = ip_hdr(skb); |
886 | ||
d1a890fa SB |
887 | iph->check = 0; |
888 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
889 | IPPROTO_TCP, 0); | |
890 | } else { | |
8bca5d1e ED |
891 | struct ipv6hdr *iph = ipv6_hdr(skb); |
892 | ||
d1a890fa SB |
893 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, |
894 | IPPROTO_TCP, 0); | |
895 | } | |
896 | } | |
897 | ||
a4d7e485 ED |
898 | static int txd_estimate(const struct sk_buff *skb) |
899 | { | |
900 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
901 | int i; | |
902 | ||
903 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
904 | const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
905 | ||
906 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
907 | } | |
908 | return count; | |
909 | } | |
d1a890fa SB |
910 | |
911 | /* | |
912 | * Transmits a pkt thru a given tq | |
913 | * Returns: | |
914 | * NETDEV_TX_OK: descriptors are setup successfully | |
25985edc | 915 | * NETDEV_TX_OK: error occurred, the pkt is dropped |
d1a890fa SB |
916 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped |
917 | * | |
918 | * Side-effects: | |
919 | * 1. tx ring may be changed | |
920 | * 2. tq stats may be updated accordingly | |
921 | * 3. shared->txNumDeferred may be updated | |
922 | */ | |
923 | ||
924 | static int | |
925 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
926 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
927 | { | |
928 | int ret; | |
929 | u32 count; | |
930 | unsigned long flags; | |
931 | struct vmxnet3_tx_ctx ctx; | |
932 | union Vmxnet3_GenericDesc *gdesc; | |
115924b6 SB |
933 | #ifdef __BIG_ENDIAN_BITFIELD |
934 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
935 | union Vmxnet3_GenericDesc tempTxDesc; | |
936 | #endif | |
d1a890fa | 937 | |
a4d7e485 | 938 | count = txd_estimate(skb); |
d1a890fa | 939 | |
72e85c45 | 940 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); |
d1a890fa SB |
941 | |
942 | ctx.mss = skb_shinfo(skb)->gso_size; | |
943 | if (ctx.mss) { | |
944 | if (skb_header_cloned(skb)) { | |
945 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
946 | GFP_ATOMIC) != 0)) { | |
947 | tq->stats.drop_tso++; | |
948 | goto drop_pkt; | |
949 | } | |
950 | tq->stats.copy_skb_header++; | |
951 | } | |
952 | vmxnet3_prepare_tso(skb, &ctx); | |
953 | } else { | |
954 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
955 | ||
956 | /* non-tso pkts must not use more than | |
957 | * VMXNET3_MAX_TXD_PER_PKT entries | |
958 | */ | |
959 | if (skb_linearize(skb) != 0) { | |
960 | tq->stats.drop_too_many_frags++; | |
961 | goto drop_pkt; | |
962 | } | |
963 | tq->stats.linearized++; | |
964 | ||
965 | /* recalculate the # of descriptors to use */ | |
966 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
967 | } | |
968 | } | |
969 | ||
09c5088e SB |
970 | spin_lock_irqsave(&tq->tx_lock, flags); |
971 | ||
972 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
973 | tq->stats.tx_ring_full++; | |
fdcd79b9 | 974 | netdev_dbg(adapter->netdev, |
09c5088e SB |
975 | "tx queue stopped on %s, next2comp %u" |
976 | " next2fill %u\n", adapter->netdev->name, | |
977 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
978 | ||
979 | vmxnet3_tq_stop(tq, adapter); | |
980 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
981 | return NETDEV_TX_BUSY; | |
982 | } | |
983 | ||
984 | ||
d1a890fa SB |
985 | ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter); |
986 | if (ret >= 0) { | |
987 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
988 | /* hdrs parsed, check against other limits */ | |
989 | if (ctx.mss) { | |
990 | if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > | |
991 | VMXNET3_MAX_TX_BUF_SIZE)) { | |
992 | goto hdr_too_big; | |
993 | } | |
994 | } else { | |
995 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
996 | if (unlikely(ctx.eth_ip_hdr_size + | |
997 | skb->csum_offset > | |
998 | VMXNET3_MAX_CSUM_OFFSET)) { | |
999 | goto hdr_too_big; | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | } else { | |
1004 | tq->stats.drop_hdr_inspect_err++; | |
f955e141 | 1005 | goto unlock_drop_pkt; |
d1a890fa SB |
1006 | } |
1007 | ||
d1a890fa SB |
1008 | /* fill tx descs related to addr & len */ |
1009 | vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter); | |
1010 | ||
1011 | /* setup the EOP desc */ | |
115924b6 | 1012 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); |
d1a890fa SB |
1013 | |
1014 | /* setup the SOP desc */ | |
115924b6 SB |
1015 | #ifdef __BIG_ENDIAN_BITFIELD |
1016 | gdesc = &tempTxDesc; | |
1017 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1018 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1019 | #else | |
d1a890fa | 1020 | gdesc = ctx.sop_txd; |
115924b6 | 1021 | #endif |
d1a890fa SB |
1022 | if (ctx.mss) { |
1023 | gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size; | |
1024 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1025 | gdesc->txd.msscof = ctx.mss; | |
115924b6 SB |
1026 | le32_add_cpu(&tq->shared->txNumDeferred, (skb->len - |
1027 | gdesc->txd.hlen + ctx.mss - 1) / ctx.mss); | |
d1a890fa SB |
1028 | } else { |
1029 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1030 | gdesc->txd.hlen = ctx.eth_ip_hdr_size; | |
1031 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1032 | gdesc->txd.msscof = ctx.eth_ip_hdr_size + | |
1033 | skb->csum_offset; | |
1034 | } else { | |
1035 | gdesc->txd.om = 0; | |
1036 | gdesc->txd.msscof = 0; | |
1037 | } | |
115924b6 | 1038 | le32_add_cpu(&tq->shared->txNumDeferred, 1); |
d1a890fa SB |
1039 | } |
1040 | ||
1041 | if (vlan_tx_tag_present(skb)) { | |
1042 | gdesc->txd.ti = 1; | |
1043 | gdesc->txd.tci = vlan_tx_tag_get(skb); | |
1044 | } | |
1045 | ||
115924b6 SB |
1046 | /* finally flips the GEN bit of the SOP desc. */ |
1047 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1048 | VMXNET3_TXD_GEN); | |
1049 | #ifdef __BIG_ENDIAN_BITFIELD | |
1050 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1051 | * place. | |
1052 | */ | |
1053 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1054 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1055 | gdesc = ctx.sop_txd; | |
1056 | #endif | |
fdcd79b9 | 1057 | netdev_dbg(adapter->netdev, |
f6965582 | 1058 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", |
c2fd03a0 | 1059 | (u32)(ctx.sop_txd - |
115924b6 SB |
1060 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), |
1061 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
d1a890fa SB |
1062 | |
1063 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1064 | ||
115924b6 SB |
1065 | if (le32_to_cpu(tq->shared->txNumDeferred) >= |
1066 | le32_to_cpu(tq->shared->txThreshold)) { | |
d1a890fa | 1067 | tq->shared->txNumDeferred = 0; |
09c5088e SB |
1068 | VMXNET3_WRITE_BAR0_REG(adapter, |
1069 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
d1a890fa SB |
1070 | tq->tx_ring.next2fill); |
1071 | } | |
d1a890fa SB |
1072 | |
1073 | return NETDEV_TX_OK; | |
1074 | ||
1075 | hdr_too_big: | |
1076 | tq->stats.drop_oversized_hdr++; | |
f955e141 DC |
1077 | unlock_drop_pkt: |
1078 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
d1a890fa SB |
1079 | drop_pkt: |
1080 | tq->stats.drop_total++; | |
b1b71817 | 1081 | dev_kfree_skb_any(skb); |
d1a890fa SB |
1082 | return NETDEV_TX_OK; |
1083 | } | |
1084 | ||
1085 | ||
1086 | static netdev_tx_t | |
1087 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1088 | { | |
1089 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1090 | |
96800ee7 | 1091 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); |
1092 | return vmxnet3_tq_xmit(skb, | |
1093 | &adapter->tx_queue[skb->queue_mapping], | |
1094 | adapter, netdev); | |
d1a890fa SB |
1095 | } |
1096 | ||
1097 | ||
1098 | static void | |
1099 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1100 | struct sk_buff *skb, | |
1101 | union Vmxnet3_GenericDesc *gdesc) | |
1102 | { | |
a0d2730c | 1103 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { |
d1a890fa | 1104 | /* typical case: TCP/UDP over IP and both csums are correct */ |
115924b6 | 1105 | if ((le32_to_cpu(gdesc->dword[3]) & VMXNET3_RCD_CSUM_OK) == |
d1a890fa SB |
1106 | VMXNET3_RCD_CSUM_OK) { |
1107 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1108 | BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp)); | |
1109 | BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6)); | |
1110 | BUG_ON(gdesc->rcd.frg); | |
1111 | } else { | |
1112 | if (gdesc->rcd.csum) { | |
1113 | skb->csum = htons(gdesc->rcd.csum); | |
1114 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1115 | } else { | |
bc8acf2c | 1116 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1117 | } |
1118 | } | |
1119 | } else { | |
bc8acf2c | 1120 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1121 | } |
1122 | } | |
1123 | ||
1124 | ||
1125 | static void | |
1126 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1127 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1128 | { | |
1129 | rq->stats.drop_err++; | |
1130 | if (!rcd->fcs) | |
1131 | rq->stats.drop_fcs++; | |
1132 | ||
1133 | rq->stats.drop_total++; | |
1134 | ||
1135 | /* | |
1136 | * We do not unmap and chain the rx buffer to the skb. | |
1137 | * We basically pretend this buffer is not used and will be recycled | |
1138 | * by vmxnet3_rq_alloc_rx_buf() | |
1139 | */ | |
1140 | ||
1141 | /* | |
1142 | * ctx->skb may be NULL if this is the first and the only one | |
1143 | * desc for the pkt | |
1144 | */ | |
1145 | if (ctx->skb) | |
1146 | dev_kfree_skb_irq(ctx->skb); | |
1147 | ||
1148 | ctx->skb = NULL; | |
1149 | } | |
1150 | ||
1151 | ||
1152 | static int | |
1153 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1154 | struct vmxnet3_adapter *adapter, int quota) | |
1155 | { | |
215faf9c JP |
1156 | static const u32 rxprod_reg[2] = { |
1157 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1158 | }; | |
d1a890fa | 1159 | u32 num_rxd = 0; |
5318d809 | 1160 | bool skip_page_frags = false; |
d1a890fa SB |
1161 | struct Vmxnet3_RxCompDesc *rcd; |
1162 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
115924b6 SB |
1163 | #ifdef __BIG_ENDIAN_BITFIELD |
1164 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1165 | struct Vmxnet3_RxCompDesc rxComp; | |
1166 | #endif | |
1167 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1168 | &rxComp); | |
d1a890fa SB |
1169 | while (rcd->gen == rq->comp_ring.gen) { |
1170 | struct vmxnet3_rx_buf_info *rbi; | |
5318d809 SB |
1171 | struct sk_buff *skb, *new_skb = NULL; |
1172 | struct page *new_page = NULL; | |
d1a890fa SB |
1173 | int num_to_alloc; |
1174 | struct Vmxnet3_RxDesc *rxd; | |
1175 | u32 idx, ring_idx; | |
5318d809 | 1176 | struct vmxnet3_cmd_ring *ring = NULL; |
d1a890fa SB |
1177 | if (num_rxd >= quota) { |
1178 | /* we may stop even before we see the EOP desc of | |
1179 | * the current pkt | |
1180 | */ | |
1181 | break; | |
1182 | } | |
1183 | num_rxd++; | |
09c5088e | 1184 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2); |
d1a890fa | 1185 | idx = rcd->rxdIdx; |
09c5088e | 1186 | ring_idx = rcd->rqID < adapter->num_rx_queues ? 0 : 1; |
5318d809 | 1187 | ring = rq->rx_ring + ring_idx; |
115924b6 SB |
1188 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, |
1189 | &rxCmdDesc); | |
d1a890fa SB |
1190 | rbi = rq->buf_info[ring_idx] + idx; |
1191 | ||
115924b6 SB |
1192 | BUG_ON(rxd->addr != rbi->dma_addr || |
1193 | rxd->len != rbi->len); | |
d1a890fa SB |
1194 | |
1195 | if (unlikely(rcd->eop && rcd->err)) { | |
1196 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1197 | goto rcd_done; | |
1198 | } | |
1199 | ||
1200 | if (rcd->sop) { /* first buf of the pkt */ | |
1201 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || | |
1202 | rcd->rqID != rq->qid); | |
1203 | ||
1204 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1205 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1206 | ||
1207 | if (unlikely(rcd->len == 0)) { | |
1208 | /* Pretend the rx buffer is skipped. */ | |
1209 | BUG_ON(!(rcd->sop && rcd->eop)); | |
fdcd79b9 | 1210 | netdev_dbg(adapter->netdev, |
f6965582 | 1211 | "rxRing[%u][%u] 0 length\n", |
d1a890fa SB |
1212 | ring_idx, idx); |
1213 | goto rcd_done; | |
1214 | } | |
1215 | ||
5318d809 | 1216 | skip_page_frags = false; |
d1a890fa | 1217 | ctx->skb = rbi->skb; |
0d735f13 SH |
1218 | new_skb = netdev_alloc_skb_ip_align(adapter->netdev, |
1219 | rbi->len); | |
5318d809 SB |
1220 | if (new_skb == NULL) { |
1221 | /* Skb allocation failed, do not handover this | |
1222 | * skb to stack. Reuse it. Drop the existing pkt | |
1223 | */ | |
1224 | rq->stats.rx_buf_alloc_failure++; | |
1225 | ctx->skb = NULL; | |
1226 | rq->stats.drop_total++; | |
1227 | skip_page_frags = true; | |
1228 | goto rcd_done; | |
1229 | } | |
d1a890fa | 1230 | |
b0eb57cb AK |
1231 | dma_unmap_single(&adapter->pdev->dev, rbi->dma_addr, |
1232 | rbi->len, | |
d1a890fa SB |
1233 | PCI_DMA_FROMDEVICE); |
1234 | ||
7db11f75 SH |
1235 | #ifdef VMXNET3_RSS |
1236 | if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE && | |
1237 | (adapter->netdev->features & NETIF_F_RXHASH)) | |
2c15a154 MS |
1238 | skb_set_hash(ctx->skb, |
1239 | le32_to_cpu(rcd->rssHash), | |
0b680703 | 1240 | PKT_HASH_TYPE_L3); |
7db11f75 | 1241 | #endif |
d1a890fa | 1242 | skb_put(ctx->skb, rcd->len); |
5318d809 SB |
1243 | |
1244 | /* Immediate refill */ | |
5318d809 | 1245 | rbi->skb = new_skb; |
b0eb57cb | 1246 | rbi->dma_addr = dma_map_single(&adapter->pdev->dev, |
96800ee7 | 1247 | rbi->skb->data, rbi->len, |
1248 | PCI_DMA_FROMDEVICE); | |
5318d809 SB |
1249 | rxd->addr = cpu_to_le64(rbi->dma_addr); |
1250 | rxd->len = rbi->len; | |
1251 | ||
d1a890fa | 1252 | } else { |
5318d809 SB |
1253 | BUG_ON(ctx->skb == NULL && !skip_page_frags); |
1254 | ||
d1a890fa | 1255 | /* non SOP buffer must be type 1 in most cases */ |
5318d809 SB |
1256 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); |
1257 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
d1a890fa | 1258 | |
5318d809 SB |
1259 | /* If an sop buffer was dropped, skip all |
1260 | * following non-sop fragments. They will be reused. | |
1261 | */ | |
1262 | if (skip_page_frags) | |
1263 | goto rcd_done; | |
d1a890fa | 1264 | |
5318d809 SB |
1265 | new_page = alloc_page(GFP_ATOMIC); |
1266 | if (unlikely(new_page == NULL)) { | |
1267 | /* Replacement page frag could not be allocated. | |
1268 | * Reuse this page. Drop the pkt and free the | |
1269 | * skb which contained this page as a frag. Skip | |
1270 | * processing all the following non-sop frags. | |
d1a890fa | 1271 | */ |
5318d809 SB |
1272 | rq->stats.rx_buf_alloc_failure++; |
1273 | dev_kfree_skb(ctx->skb); | |
1274 | ctx->skb = NULL; | |
1275 | skip_page_frags = true; | |
1276 | goto rcd_done; | |
1277 | } | |
1278 | ||
1279 | if (rcd->len) { | |
b0eb57cb | 1280 | dma_unmap_page(&adapter->pdev->dev, |
5318d809 SB |
1281 | rbi->dma_addr, rbi->len, |
1282 | PCI_DMA_FROMDEVICE); | |
1283 | ||
1284 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
d1a890fa | 1285 | } |
5318d809 SB |
1286 | |
1287 | /* Immediate refill */ | |
1288 | rbi->page = new_page; | |
b0eb57cb AK |
1289 | rbi->dma_addr = dma_map_page(&adapter->pdev->dev, |
1290 | rbi->page, | |
5318d809 SB |
1291 | 0, PAGE_SIZE, |
1292 | PCI_DMA_FROMDEVICE); | |
1293 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1294 | rxd->len = rbi->len; | |
d1a890fa SB |
1295 | } |
1296 | ||
5318d809 | 1297 | |
d1a890fa SB |
1298 | skb = ctx->skb; |
1299 | if (rcd->eop) { | |
1300 | skb->len += skb->data_len; | |
d1a890fa SB |
1301 | |
1302 | vmxnet3_rx_csum(adapter, skb, | |
1303 | (union Vmxnet3_GenericDesc *)rcd); | |
1304 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
1305 | ||
72e85c45 | 1306 | if (unlikely(rcd->ts)) |
86a9bad3 | 1307 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci); |
72e85c45 | 1308 | |
213ade8c JG |
1309 | if (adapter->netdev->features & NETIF_F_LRO) |
1310 | netif_receive_skb(skb); | |
1311 | else | |
1312 | napi_gro_receive(&rq->napi, skb); | |
d1a890fa | 1313 | |
d1a890fa SB |
1314 | ctx->skb = NULL; |
1315 | } | |
1316 | ||
1317 | rcd_done: | |
5318d809 SB |
1318 | /* device may have skipped some rx descs */ |
1319 | ring->next2comp = idx; | |
1320 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1321 | ring = rq->rx_ring + ring_idx; | |
1322 | while (num_to_alloc) { | |
1323 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1324 | &rxCmdDesc); | |
1325 | BUG_ON(!rxd->addr); | |
1326 | ||
1327 | /* Recv desc is ready to be used by the device */ | |
1328 | rxd->gen = ring->gen; | |
1329 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1330 | num_to_alloc--; | |
1331 | } | |
1332 | ||
1333 | /* if needed, update the register */ | |
1334 | if (unlikely(rq->shared->updateRxProd)) { | |
1335 | VMXNET3_WRITE_BAR0_REG(adapter, | |
96800ee7 | 1336 | rxprod_reg[ring_idx] + rq->qid * 8, |
1337 | ring->next2fill); | |
d1a890fa SB |
1338 | } |
1339 | ||
1340 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
115924b6 | 1341 | vmxnet3_getRxComp(rcd, |
96800ee7 | 1342 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); |
d1a890fa SB |
1343 | } |
1344 | ||
1345 | return num_rxd; | |
1346 | } | |
1347 | ||
1348 | ||
1349 | static void | |
1350 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1351 | struct vmxnet3_adapter *adapter) | |
1352 | { | |
1353 | u32 i, ring_idx; | |
1354 | struct Vmxnet3_RxDesc *rxd; | |
1355 | ||
1356 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1357 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
115924b6 SB |
1358 | #ifdef __BIG_ENDIAN_BITFIELD |
1359 | struct Vmxnet3_RxDesc rxDesc; | |
1360 | #endif | |
1361 | vmxnet3_getRxDesc(rxd, | |
1362 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
d1a890fa SB |
1363 | |
1364 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1365 | rq->buf_info[ring_idx][i].skb) { | |
b0eb57cb | 1366 | dma_unmap_single(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1367 | rxd->len, PCI_DMA_FROMDEVICE); |
1368 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1369 | rq->buf_info[ring_idx][i].skb = NULL; | |
1370 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1371 | rq->buf_info[ring_idx][i].page) { | |
b0eb57cb | 1372 | dma_unmap_page(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1373 | rxd->len, PCI_DMA_FROMDEVICE); |
1374 | put_page(rq->buf_info[ring_idx][i].page); | |
1375 | rq->buf_info[ring_idx][i].page = NULL; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1380 | rq->rx_ring[ring_idx].next2fill = | |
1381 | rq->rx_ring[ring_idx].next2comp = 0; | |
d1a890fa SB |
1382 | } |
1383 | ||
1384 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1385 | rq->comp_ring.next2proc = 0; | |
1386 | } | |
1387 | ||
1388 | ||
09c5088e SB |
1389 | static void |
1390 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1391 | { | |
1392 | int i; | |
1393 | ||
1394 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1395 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1396 | } | |
1397 | ||
1398 | ||
280b74f7 | 1399 | static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, |
1400 | struct vmxnet3_adapter *adapter) | |
d1a890fa SB |
1401 | { |
1402 | int i; | |
1403 | int j; | |
1404 | ||
1405 | /* all rx buffers must have already been freed */ | |
1406 | for (i = 0; i < 2; i++) { | |
1407 | if (rq->buf_info[i]) { | |
1408 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1409 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | ||
d1a890fa SB |
1414 | for (i = 0; i < 2; i++) { |
1415 | if (rq->rx_ring[i].base) { | |
b0eb57cb AK |
1416 | dma_free_coherent(&adapter->pdev->dev, |
1417 | rq->rx_ring[i].size | |
1418 | * sizeof(struct Vmxnet3_RxDesc), | |
1419 | rq->rx_ring[i].base, | |
1420 | rq->rx_ring[i].basePA); | |
d1a890fa SB |
1421 | rq->rx_ring[i].base = NULL; |
1422 | } | |
1423 | rq->buf_info[i] = NULL; | |
1424 | } | |
1425 | ||
1426 | if (rq->comp_ring.base) { | |
b0eb57cb AK |
1427 | dma_free_coherent(&adapter->pdev->dev, rq->comp_ring.size |
1428 | * sizeof(struct Vmxnet3_RxCompDesc), | |
1429 | rq->comp_ring.base, rq->comp_ring.basePA); | |
d1a890fa SB |
1430 | rq->comp_ring.base = NULL; |
1431 | } | |
b0eb57cb AK |
1432 | |
1433 | if (rq->buf_info[0]) { | |
1434 | size_t sz = sizeof(struct vmxnet3_rx_buf_info) * | |
1435 | (rq->rx_ring[0].size + rq->rx_ring[1].size); | |
1436 | dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], | |
1437 | rq->buf_info_pa); | |
1438 | } | |
d1a890fa SB |
1439 | } |
1440 | ||
1441 | ||
1442 | static int | |
1443 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1444 | struct vmxnet3_adapter *adapter) | |
1445 | { | |
1446 | int i; | |
1447 | ||
1448 | /* initialize buf_info */ | |
1449 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1450 | ||
1451 | /* 1st buf for a pkt is skbuff */ | |
1452 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1453 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1454 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1455 | } else { /* subsequent bufs for a pkt is frag */ | |
1456 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1457 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1458 | } | |
1459 | } | |
1460 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1461 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1462 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1463 | } | |
1464 | ||
1465 | /* reset internal state and allocate buffers for both rings */ | |
1466 | for (i = 0; i < 2; i++) { | |
1467 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
d1a890fa SB |
1468 | |
1469 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1470 | sizeof(struct Vmxnet3_RxDesc)); | |
1471 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1472 | } | |
1473 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1474 | adapter) == 0) { | |
1475 | /* at least has 1 rx buffer for the 1st ring */ | |
1476 | return -ENOMEM; | |
1477 | } | |
1478 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1479 | ||
1480 | /* reset the comp ring */ | |
1481 | rq->comp_ring.next2proc = 0; | |
1482 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1483 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1484 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1485 | ||
1486 | /* reset rxctx */ | |
1487 | rq->rx_ctx.skb = NULL; | |
1488 | ||
1489 | /* stats are not reset */ | |
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | ||
09c5088e SB |
1494 | static int |
1495 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1496 | { | |
1497 | int i, err = 0; | |
1498 | ||
1499 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1500 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1501 | if (unlikely(err)) { | |
1502 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1503 | "initialize rx queue%i\n", | |
1504 | adapter->netdev->name, i); | |
1505 | break; | |
1506 | } | |
1507 | } | |
1508 | return err; | |
1509 | ||
1510 | } | |
1511 | ||
1512 | ||
d1a890fa SB |
1513 | static int |
1514 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1515 | { | |
1516 | int i; | |
1517 | size_t sz; | |
1518 | struct vmxnet3_rx_buf_info *bi; | |
1519 | ||
1520 | for (i = 0; i < 2; i++) { | |
1521 | ||
1522 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
b0eb57cb AK |
1523 | rq->rx_ring[i].base = dma_alloc_coherent( |
1524 | &adapter->pdev->dev, sz, | |
1525 | &rq->rx_ring[i].basePA, | |
1526 | GFP_KERNEL); | |
d1a890fa | 1527 | if (!rq->rx_ring[i].base) { |
204a6e65 SH |
1528 | netdev_err(adapter->netdev, |
1529 | "failed to allocate rx ring %d\n", i); | |
d1a890fa SB |
1530 | goto err; |
1531 | } | |
1532 | } | |
1533 | ||
1534 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); | |
b0eb57cb AK |
1535 | rq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, sz, |
1536 | &rq->comp_ring.basePA, | |
1537 | GFP_KERNEL); | |
d1a890fa | 1538 | if (!rq->comp_ring.base) { |
204a6e65 | 1539 | netdev_err(adapter->netdev, "failed to allocate rx comp ring\n"); |
d1a890fa SB |
1540 | goto err; |
1541 | } | |
1542 | ||
1543 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1544 | rq->rx_ring[1].size); | |
b0eb57cb AK |
1545 | bi = dma_zalloc_coherent(&adapter->pdev->dev, sz, &rq->buf_info_pa, |
1546 | GFP_KERNEL); | |
e404decb | 1547 | if (!bi) |
d1a890fa | 1548 | goto err; |
e404decb | 1549 | |
d1a890fa SB |
1550 | rq->buf_info[0] = bi; |
1551 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1552 | ||
1553 | return 0; | |
1554 | ||
1555 | err: | |
1556 | vmxnet3_rq_destroy(rq, adapter); | |
1557 | return -ENOMEM; | |
1558 | } | |
1559 | ||
1560 | ||
09c5088e SB |
1561 | static int |
1562 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1563 | { | |
1564 | int i, err = 0; | |
1565 | ||
1566 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1567 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1568 | if (unlikely(err)) { | |
1569 | dev_err(&adapter->netdev->dev, | |
1570 | "%s: failed to create rx queue%i\n", | |
1571 | adapter->netdev->name, i); | |
1572 | goto err_out; | |
1573 | } | |
1574 | } | |
1575 | return err; | |
1576 | err_out: | |
1577 | vmxnet3_rq_destroy_all(adapter); | |
1578 | return err; | |
1579 | ||
1580 | } | |
1581 | ||
1582 | /* Multiple queue aware polling function for tx and rx */ | |
1583 | ||
d1a890fa SB |
1584 | static int |
1585 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1586 | { | |
09c5088e | 1587 | int rcd_done = 0, i; |
d1a890fa SB |
1588 | if (unlikely(adapter->shared->ecr)) |
1589 | vmxnet3_process_events(adapter); | |
09c5088e SB |
1590 | for (i = 0; i < adapter->num_tx_queues; i++) |
1591 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
d1a890fa | 1592 | |
09c5088e SB |
1593 | for (i = 0; i < adapter->num_rx_queues; i++) |
1594 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1595 | adapter, budget); | |
1596 | return rcd_done; | |
d1a890fa SB |
1597 | } |
1598 | ||
1599 | ||
1600 | static int | |
1601 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1602 | { | |
09c5088e SB |
1603 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, |
1604 | struct vmxnet3_rx_queue, napi); | |
1605 | int rxd_done; | |
1606 | ||
1607 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1608 | ||
1609 | if (rxd_done < budget) { | |
1610 | napi_complete(napi); | |
1611 | vmxnet3_enable_all_intrs(rx_queue->adapter); | |
1612 | } | |
1613 | return rxd_done; | |
1614 | } | |
1615 | ||
1616 | /* | |
1617 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1618 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1619 | */ | |
1620 | ||
1621 | static int | |
1622 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1623 | { | |
1624 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1625 | struct vmxnet3_rx_queue, napi); | |
1626 | struct vmxnet3_adapter *adapter = rq->adapter; | |
d1a890fa SB |
1627 | int rxd_done; |
1628 | ||
09c5088e SB |
1629 | /* When sharing interrupt with corresponding tx queue, process |
1630 | * tx completions in that queue as well | |
1631 | */ | |
1632 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1633 | struct vmxnet3_tx_queue *tq = | |
1634 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1635 | vmxnet3_tq_tx_complete(tq, adapter); | |
1636 | } | |
1637 | ||
1638 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
d1a890fa SB |
1639 | |
1640 | if (rxd_done < budget) { | |
1641 | napi_complete(napi); | |
09c5088e | 1642 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); |
d1a890fa SB |
1643 | } |
1644 | return rxd_done; | |
1645 | } | |
1646 | ||
1647 | ||
09c5088e SB |
1648 | #ifdef CONFIG_PCI_MSI |
1649 | ||
1650 | /* | |
1651 | * Handle completion interrupts on tx queues | |
1652 | * Returns whether or not the intr is handled | |
1653 | */ | |
1654 | ||
1655 | static irqreturn_t | |
1656 | vmxnet3_msix_tx(int irq, void *data) | |
1657 | { | |
1658 | struct vmxnet3_tx_queue *tq = data; | |
1659 | struct vmxnet3_adapter *adapter = tq->adapter; | |
1660 | ||
1661 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1662 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
1663 | ||
1664 | /* Handle the case where only one irq is allocate for all tx queues */ | |
1665 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1666 | int i; | |
1667 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1668 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
1669 | vmxnet3_tq_tx_complete(txq, adapter); | |
1670 | } | |
1671 | } else { | |
1672 | vmxnet3_tq_tx_complete(tq, adapter); | |
1673 | } | |
1674 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
1675 | ||
1676 | return IRQ_HANDLED; | |
1677 | } | |
1678 | ||
1679 | ||
1680 | /* | |
1681 | * Handle completion interrupts on rx queues. Returns whether or not the | |
1682 | * intr is handled | |
1683 | */ | |
1684 | ||
1685 | static irqreturn_t | |
1686 | vmxnet3_msix_rx(int irq, void *data) | |
1687 | { | |
1688 | struct vmxnet3_rx_queue *rq = data; | |
1689 | struct vmxnet3_adapter *adapter = rq->adapter; | |
1690 | ||
1691 | /* disable intr if needed */ | |
1692 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1693 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
1694 | napi_schedule(&rq->napi); | |
1695 | ||
1696 | return IRQ_HANDLED; | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | *---------------------------------------------------------------------------- | |
1701 | * | |
1702 | * vmxnet3_msix_event -- | |
1703 | * | |
1704 | * vmxnet3 msix event intr handler | |
1705 | * | |
1706 | * Result: | |
1707 | * whether or not the intr is handled | |
1708 | * | |
1709 | *---------------------------------------------------------------------------- | |
1710 | */ | |
1711 | ||
1712 | static irqreturn_t | |
1713 | vmxnet3_msix_event(int irq, void *data) | |
1714 | { | |
1715 | struct net_device *dev = data; | |
1716 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1717 | ||
1718 | /* disable intr if needed */ | |
1719 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
1720 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
1721 | ||
1722 | if (adapter->shared->ecr) | |
1723 | vmxnet3_process_events(adapter); | |
1724 | ||
1725 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
1726 | ||
1727 | return IRQ_HANDLED; | |
1728 | } | |
1729 | ||
1730 | #endif /* CONFIG_PCI_MSI */ | |
1731 | ||
1732 | ||
d1a890fa SB |
1733 | /* Interrupt handler for vmxnet3 */ |
1734 | static irqreturn_t | |
1735 | vmxnet3_intr(int irq, void *dev_id) | |
1736 | { | |
1737 | struct net_device *dev = dev_id; | |
1738 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
1739 | ||
09c5088e | 1740 | if (adapter->intr.type == VMXNET3_IT_INTX) { |
d1a890fa SB |
1741 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); |
1742 | if (unlikely(icr == 0)) | |
1743 | /* not ours */ | |
1744 | return IRQ_NONE; | |
1745 | } | |
1746 | ||
1747 | ||
1748 | /* disable intr if needed */ | |
1749 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
09c5088e | 1750 | vmxnet3_disable_all_intrs(adapter); |
d1a890fa | 1751 | |
09c5088e | 1752 | napi_schedule(&adapter->rx_queue[0].napi); |
d1a890fa SB |
1753 | |
1754 | return IRQ_HANDLED; | |
1755 | } | |
1756 | ||
1757 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1758 | ||
d1a890fa SB |
1759 | /* netpoll callback. */ |
1760 | static void | |
1761 | vmxnet3_netpoll(struct net_device *netdev) | |
1762 | { | |
1763 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1764 | |
d25f06ea | 1765 | switch (adapter->intr.type) { |
0a8d8c44 AB |
1766 | #ifdef CONFIG_PCI_MSI |
1767 | case VMXNET3_IT_MSIX: { | |
1768 | int i; | |
d25f06ea NH |
1769 | for (i = 0; i < adapter->num_rx_queues; i++) |
1770 | vmxnet3_msix_rx(0, &adapter->rx_queue[i]); | |
1771 | break; | |
0a8d8c44 AB |
1772 | } |
1773 | #endif | |
d25f06ea NH |
1774 | case VMXNET3_IT_MSI: |
1775 | default: | |
1776 | vmxnet3_intr(0, adapter->netdev); | |
1777 | break; | |
1778 | } | |
d1a890fa | 1779 | |
d1a890fa | 1780 | } |
09c5088e | 1781 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
d1a890fa SB |
1782 | |
1783 | static int | |
1784 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
1785 | { | |
09c5088e SB |
1786 | struct vmxnet3_intr *intr = &adapter->intr; |
1787 | int err = 0, i; | |
1788 | int vector = 0; | |
d1a890fa | 1789 | |
8f7e524c | 1790 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1791 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
1792 | for (i = 0; i < adapter->num_tx_queues; i++) { |
1793 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
1794 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
1795 | adapter->netdev->name, vector); | |
1796 | err = request_irq( | |
1797 | intr->msix_entries[vector].vector, | |
1798 | vmxnet3_msix_tx, 0, | |
1799 | adapter->tx_queue[i].name, | |
1800 | &adapter->tx_queue[i]); | |
1801 | } else { | |
1802 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
1803 | adapter->netdev->name, vector); | |
1804 | } | |
1805 | if (err) { | |
1806 | dev_err(&adapter->netdev->dev, | |
1807 | "Failed to request irq for MSIX, %s, " | |
1808 | "error %d\n", | |
1809 | adapter->tx_queue[i].name, err); | |
1810 | return err; | |
1811 | } | |
1812 | ||
1813 | /* Handle the case where only 1 MSIx was allocated for | |
1814 | * all tx queues */ | |
1815 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
1816 | for (; i < adapter->num_tx_queues; i++) | |
1817 | adapter->tx_queue[i].comp_ring.intr_idx | |
1818 | = vector; | |
1819 | vector++; | |
1820 | break; | |
1821 | } else { | |
1822 | adapter->tx_queue[i].comp_ring.intr_idx | |
1823 | = vector++; | |
1824 | } | |
1825 | } | |
1826 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
1827 | vector = 0; | |
1828 | ||
1829 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1830 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
1831 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
1832 | adapter->netdev->name, vector); | |
1833 | else | |
1834 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
1835 | adapter->netdev->name, vector); | |
1836 | err = request_irq(intr->msix_entries[vector].vector, | |
1837 | vmxnet3_msix_rx, 0, | |
1838 | adapter->rx_queue[i].name, | |
1839 | &(adapter->rx_queue[i])); | |
1840 | if (err) { | |
204a6e65 SH |
1841 | netdev_err(adapter->netdev, |
1842 | "Failed to request irq for MSIX, " | |
1843 | "%s, error %d\n", | |
1844 | adapter->rx_queue[i].name, err); | |
09c5088e SB |
1845 | return err; |
1846 | } | |
1847 | ||
1848 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
1849 | } | |
1850 | ||
1851 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
1852 | adapter->netdev->name, vector); | |
1853 | err = request_irq(intr->msix_entries[vector].vector, | |
1854 | vmxnet3_msix_event, 0, | |
1855 | intr->event_msi_vector_name, adapter->netdev); | |
1856 | intr->event_intr_idx = vector; | |
1857 | ||
1858 | } else if (intr->type == VMXNET3_IT_MSI) { | |
1859 | adapter->num_rx_queues = 1; | |
d1a890fa SB |
1860 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, |
1861 | adapter->netdev->name, adapter->netdev); | |
09c5088e | 1862 | } else { |
115924b6 | 1863 | #endif |
09c5088e | 1864 | adapter->num_rx_queues = 1; |
d1a890fa SB |
1865 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, |
1866 | IRQF_SHARED, adapter->netdev->name, | |
1867 | adapter->netdev); | |
09c5088e | 1868 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 1869 | } |
09c5088e SB |
1870 | #endif |
1871 | intr->num_intrs = vector + 1; | |
1872 | if (err) { | |
204a6e65 SH |
1873 | netdev_err(adapter->netdev, |
1874 | "Failed to request irq (intr type:%d), error %d\n", | |
1875 | intr->type, err); | |
09c5088e SB |
1876 | } else { |
1877 | /* Number of rx queues will not change after this */ | |
1878 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1879 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1880 | rq->qid = i; | |
1881 | rq->qid2 = i + adapter->num_rx_queues; | |
1882 | } | |
d1a890fa SB |
1883 | |
1884 | ||
d1a890fa | 1885 | |
09c5088e SB |
1886 | /* init our intr settings */ |
1887 | for (i = 0; i < intr->num_intrs; i++) | |
1888 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
1889 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
1890 | adapter->intr.event_intr_idx = 0; | |
1891 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1892 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
1893 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
1894 | } | |
d1a890fa | 1895 | |
204a6e65 SH |
1896 | netdev_info(adapter->netdev, |
1897 | "intr type %u, mode %u, %u vectors allocated\n", | |
1898 | intr->type, intr->mask_mode, intr->num_intrs); | |
d1a890fa SB |
1899 | } |
1900 | ||
1901 | return err; | |
1902 | } | |
1903 | ||
1904 | ||
1905 | static void | |
1906 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
1907 | { | |
09c5088e SB |
1908 | struct vmxnet3_intr *intr = &adapter->intr; |
1909 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
d1a890fa | 1910 | |
09c5088e | 1911 | switch (intr->type) { |
8f7e524c | 1912 | #ifdef CONFIG_PCI_MSI |
d1a890fa SB |
1913 | case VMXNET3_IT_MSIX: |
1914 | { | |
09c5088e | 1915 | int i, vector = 0; |
d1a890fa | 1916 | |
09c5088e SB |
1917 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { |
1918 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1919 | free_irq(intr->msix_entries[vector++].vector, | |
1920 | &(adapter->tx_queue[i])); | |
1921 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
1922 | break; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1927 | free_irq(intr->msix_entries[vector++].vector, | |
1928 | &(adapter->rx_queue[i])); | |
1929 | } | |
1930 | ||
1931 | free_irq(intr->msix_entries[vector].vector, | |
1932 | adapter->netdev); | |
1933 | BUG_ON(vector >= intr->num_intrs); | |
d1a890fa SB |
1934 | break; |
1935 | } | |
8f7e524c | 1936 | #endif |
d1a890fa SB |
1937 | case VMXNET3_IT_MSI: |
1938 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1939 | break; | |
1940 | case VMXNET3_IT_INTX: | |
1941 | free_irq(adapter->pdev->irq, adapter->netdev); | |
1942 | break; | |
1943 | default: | |
c068e777 | 1944 | BUG(); |
d1a890fa SB |
1945 | } |
1946 | } | |
1947 | ||
d1a890fa SB |
1948 | |
1949 | static void | |
1950 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
1951 | { | |
72e85c45 JG |
1952 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; |
1953 | u16 vid; | |
d1a890fa | 1954 | |
72e85c45 JG |
1955 | /* allow untagged pkts */ |
1956 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
1957 | ||
1958 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
1959 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
d1a890fa SB |
1960 | } |
1961 | ||
1962 | ||
8e586137 | 1963 | static int |
80d5c368 | 1964 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
1965 | { |
1966 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1967 | |
f6957f88 JG |
1968 | if (!(netdev->flags & IFF_PROMISC)) { |
1969 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1970 | unsigned long flags; | |
1971 | ||
1972 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
1973 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1974 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1975 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1976 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1977 | } | |
72e85c45 JG |
1978 | |
1979 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
1980 | |
1981 | return 0; | |
d1a890fa SB |
1982 | } |
1983 | ||
1984 | ||
8e586137 | 1985 | static int |
80d5c368 | 1986 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
1987 | { |
1988 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1989 | |
f6957f88 JG |
1990 | if (!(netdev->flags & IFF_PROMISC)) { |
1991 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
1992 | unsigned long flags; | |
1993 | ||
1994 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
1995 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
1996 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
1997 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
1998 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
1999 | } | |
72e85c45 JG |
2000 | |
2001 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2002 | |
2003 | return 0; | |
d1a890fa SB |
2004 | } |
2005 | ||
2006 | ||
2007 | static u8 * | |
2008 | vmxnet3_copy_mc(struct net_device *netdev) | |
2009 | { | |
2010 | u8 *buf = NULL; | |
4cd24eaf | 2011 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; |
d1a890fa SB |
2012 | |
2013 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
2014 | if (sz <= 0xffff) { | |
2015 | /* We may be called with BH disabled */ | |
2016 | buf = kmalloc(sz, GFP_ATOMIC); | |
2017 | if (buf) { | |
22bedad3 | 2018 | struct netdev_hw_addr *ha; |
567ec874 | 2019 | int i = 0; |
d1a890fa | 2020 | |
22bedad3 JP |
2021 | netdev_for_each_mc_addr(ha, netdev) |
2022 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
d1a890fa | 2023 | ETH_ALEN); |
d1a890fa SB |
2024 | } |
2025 | } | |
2026 | return buf; | |
2027 | } | |
2028 | ||
2029 | ||
2030 | static void | |
2031 | vmxnet3_set_mc(struct net_device *netdev) | |
2032 | { | |
2033 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
83d0feff | 2034 | unsigned long flags; |
d1a890fa SB |
2035 | struct Vmxnet3_RxFilterConf *rxConf = |
2036 | &adapter->shared->devRead.rxFilterConf; | |
2037 | u8 *new_table = NULL; | |
b0eb57cb | 2038 | dma_addr_t new_table_pa = 0; |
d1a890fa SB |
2039 | u32 new_mode = VMXNET3_RXM_UCAST; |
2040 | ||
72e85c45 JG |
2041 | if (netdev->flags & IFF_PROMISC) { |
2042 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2043 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2044 | ||
d1a890fa | 2045 | new_mode |= VMXNET3_RXM_PROMISC; |
72e85c45 JG |
2046 | } else { |
2047 | vmxnet3_restore_vlan(adapter); | |
2048 | } | |
d1a890fa SB |
2049 | |
2050 | if (netdev->flags & IFF_BROADCAST) | |
2051 | new_mode |= VMXNET3_RXM_BCAST; | |
2052 | ||
2053 | if (netdev->flags & IFF_ALLMULTI) | |
2054 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2055 | else | |
4cd24eaf | 2056 | if (!netdev_mc_empty(netdev)) { |
d1a890fa SB |
2057 | new_table = vmxnet3_copy_mc(netdev); |
2058 | if (new_table) { | |
2059 | new_mode |= VMXNET3_RXM_MCAST; | |
115924b6 | 2060 | rxConf->mfTableLen = cpu_to_le16( |
4cd24eaf | 2061 | netdev_mc_count(netdev) * ETH_ALEN); |
b0eb57cb AK |
2062 | new_table_pa = dma_map_single( |
2063 | &adapter->pdev->dev, | |
2064 | new_table, | |
2065 | rxConf->mfTableLen, | |
2066 | PCI_DMA_TODEVICE); | |
2067 | rxConf->mfTablePA = cpu_to_le64(new_table_pa); | |
d1a890fa | 2068 | } else { |
204a6e65 SH |
2069 | netdev_info(netdev, "failed to copy mcast list" |
2070 | ", setting ALL_MULTI\n"); | |
d1a890fa SB |
2071 | new_mode |= VMXNET3_RXM_ALL_MULTI; |
2072 | } | |
2073 | } | |
2074 | ||
2075 | ||
2076 | if (!(new_mode & VMXNET3_RXM_MCAST)) { | |
2077 | rxConf->mfTableLen = 0; | |
2078 | rxConf->mfTablePA = 0; | |
2079 | } | |
2080 | ||
83d0feff | 2081 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 2082 | if (new_mode != rxConf->rxMode) { |
115924b6 | 2083 | rxConf->rxMode = cpu_to_le32(new_mode); |
d1a890fa SB |
2084 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2085 | VMXNET3_CMD_UPDATE_RX_MODE); | |
72e85c45 JG |
2086 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2087 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
d1a890fa SB |
2088 | } |
2089 | ||
2090 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2091 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
83d0feff | 2092 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 2093 | |
b0eb57cb AK |
2094 | if (new_table) { |
2095 | dma_unmap_single(&adapter->pdev->dev, new_table_pa, | |
2096 | rxConf->mfTableLen, PCI_DMA_TODEVICE); | |
2097 | kfree(new_table); | |
2098 | } | |
d1a890fa SB |
2099 | } |
2100 | ||
09c5088e SB |
2101 | void |
2102 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2103 | { | |
2104 | int i; | |
2105 | ||
2106 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2107 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2108 | } | |
2109 | ||
d1a890fa SB |
2110 | |
2111 | /* | |
2112 | * Set up driver_shared based on settings in adapter. | |
2113 | */ | |
2114 | ||
2115 | static void | |
2116 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2117 | { | |
2118 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2119 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2120 | struct Vmxnet3_TxQueueConf *tqc; | |
2121 | struct Vmxnet3_RxQueueConf *rqc; | |
2122 | int i; | |
2123 | ||
2124 | memset(shared, 0, sizeof(*shared)); | |
2125 | ||
2126 | /* driver settings */ | |
115924b6 SB |
2127 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); |
2128 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2129 | VMXNET3_DRIVER_VERSION_NUM); | |
d1a890fa SB |
2130 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? |
2131 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2132 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
115924b6 SB |
2133 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( |
2134 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2135 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2136 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
d1a890fa | 2137 | |
b0eb57cb | 2138 | devRead->misc.ddPA = cpu_to_le64(adapter->adapter_pa); |
115924b6 | 2139 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); |
d1a890fa SB |
2140 | |
2141 | /* set up feature flags */ | |
a0d2730c | 2142 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
3843e515 | 2143 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; |
d1a890fa | 2144 | |
a0d2730c | 2145 | if (adapter->netdev->features & NETIF_F_LRO) { |
3843e515 | 2146 | devRead->misc.uptFeatures |= UPT1_F_LRO; |
115924b6 | 2147 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); |
d1a890fa | 2148 | } |
f646968f | 2149 | if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
3843e515 | 2150 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; |
d1a890fa | 2151 | |
115924b6 SB |
2152 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); |
2153 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2154 | devRead->misc.queueDescLen = cpu_to_le32( | |
09c5088e SB |
2155 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + |
2156 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
d1a890fa SB |
2157 | |
2158 | /* tx queue settings */ | |
09c5088e SB |
2159 | devRead->misc.numTxQueues = adapter->num_tx_queues; |
2160 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2161 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2162 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2163 | tqc = &adapter->tqd_start[i].conf; | |
2164 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2165 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2166 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
b0eb57cb | 2167 | tqc->ddPA = cpu_to_le64(tq->buf_info_pa); |
09c5088e SB |
2168 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); |
2169 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
2170 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); | |
2171 | tqc->ddLen = cpu_to_le32( | |
2172 | sizeof(struct vmxnet3_tx_buf_info) * | |
2173 | tqc->txRingSize); | |
2174 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2175 | } | |
d1a890fa SB |
2176 | |
2177 | /* rx queue settings */ | |
09c5088e SB |
2178 | devRead->misc.numRxQueues = adapter->num_rx_queues; |
2179 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2180 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2181 | rqc = &adapter->rqd_start[i].conf; | |
2182 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2183 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2184 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
b0eb57cb | 2185 | rqc->ddPA = cpu_to_le64(rq->buf_info_pa); |
09c5088e SB |
2186 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); |
2187 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2188 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2189 | rqc->ddLen = cpu_to_le32( | |
2190 | sizeof(struct vmxnet3_rx_buf_info) * | |
2191 | (rqc->rxRingSize[0] + | |
2192 | rqc->rxRingSize[1])); | |
2193 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
2194 | } | |
2195 | ||
2196 | #ifdef VMXNET3_RSS | |
2197 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2198 | ||
2199 | if (adapter->rss) { | |
2200 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
66d35910 SH |
2201 | static const uint8_t rss_key[UPT1_RSS_MAX_KEY_SIZE] = { |
2202 | 0x3b, 0x56, 0xd1, 0x56, 0x13, 0x4a, 0xe7, 0xac, | |
2203 | 0xe8, 0x79, 0x09, 0x75, 0xe8, 0x65, 0x79, 0x28, | |
2204 | 0x35, 0x12, 0xb9, 0x56, 0x7c, 0x76, 0x4b, 0x70, | |
2205 | 0xd8, 0x56, 0xa3, 0x18, 0x9b, 0x0a, 0xee, 0xf3, | |
2206 | 0x96, 0xa6, 0x9f, 0x8f, 0x9e, 0x8c, 0x90, 0xc9, | |
2207 | }; | |
2208 | ||
09c5088e SB |
2209 | devRead->misc.uptFeatures |= UPT1_F_RSS; |
2210 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2211 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2212 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2213 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2214 | UPT1_RSS_HASH_TYPE_IPV6; | |
2215 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2216 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2217 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
66d35910 SH |
2218 | memcpy(rssConf->hashKey, rss_key, sizeof(rss_key)); |
2219 | ||
09c5088e | 2220 | for (i = 0; i < rssConf->indTableSize; i++) |
278bc429 BH |
2221 | rssConf->indTable[i] = ethtool_rxfh_indir_default( |
2222 | i, adapter->num_rx_queues); | |
09c5088e SB |
2223 | |
2224 | devRead->rssConfDesc.confVer = 1; | |
b0eb57cb AK |
2225 | devRead->rssConfDesc.confLen = cpu_to_le32(sizeof(*rssConf)); |
2226 | devRead->rssConfDesc.confPA = | |
2227 | cpu_to_le64(adapter->rss_conf_pa); | |
09c5088e SB |
2228 | } |
2229 | ||
2230 | #endif /* VMXNET3_RSS */ | |
d1a890fa SB |
2231 | |
2232 | /* intr settings */ | |
2233 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2234 | VMXNET3_IMM_AUTO; | |
2235 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2236 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2237 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2238 | ||
2239 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
6929fe8a | 2240 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); |
d1a890fa SB |
2241 | |
2242 | /* rx filter settings */ | |
2243 | devRead->rxFilterConf.rxMode = 0; | |
2244 | vmxnet3_restore_vlan(adapter); | |
f9f25026 SB |
2245 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); |
2246 | ||
d1a890fa SB |
2247 | /* the rest are already zeroed */ |
2248 | } | |
2249 | ||
2250 | ||
2251 | int | |
2252 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2253 | { | |
09c5088e | 2254 | int err, i; |
d1a890fa | 2255 | u32 ret; |
83d0feff | 2256 | unsigned long flags; |
d1a890fa | 2257 | |
fdcd79b9 | 2258 | netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," |
09c5088e SB |
2259 | " ring sizes %u %u %u\n", adapter->netdev->name, |
2260 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2261 | adapter->tx_queue[0].tx_ring.size, | |
2262 | adapter->rx_queue[0].rx_ring[0].size, | |
2263 | adapter->rx_queue[0].rx_ring[1].size); | |
2264 | ||
2265 | vmxnet3_tq_init_all(adapter); | |
2266 | err = vmxnet3_rq_init_all(adapter); | |
d1a890fa | 2267 | if (err) { |
204a6e65 SH |
2268 | netdev_err(adapter->netdev, |
2269 | "Failed to init rx queue error %d\n", err); | |
d1a890fa SB |
2270 | goto rq_err; |
2271 | } | |
2272 | ||
2273 | err = vmxnet3_request_irqs(adapter); | |
2274 | if (err) { | |
204a6e65 SH |
2275 | netdev_err(adapter->netdev, |
2276 | "Failed to setup irq for error %d\n", err); | |
d1a890fa SB |
2277 | goto irq_err; |
2278 | } | |
2279 | ||
2280 | vmxnet3_setup_driver_shared(adapter); | |
2281 | ||
115924b6 SB |
2282 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( |
2283 | adapter->shared_pa)); | |
2284 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2285 | adapter->shared_pa)); | |
83d0feff | 2286 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2287 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2288 | VMXNET3_CMD_ACTIVATE_DEV); | |
2289 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2290 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2291 | |
2292 | if (ret != 0) { | |
204a6e65 SH |
2293 | netdev_err(adapter->netdev, |
2294 | "Failed to activate dev: error %u\n", ret); | |
d1a890fa SB |
2295 | err = -EINVAL; |
2296 | goto activate_err; | |
2297 | } | |
09c5088e SB |
2298 | |
2299 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2300 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2301 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2302 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2303 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2304 | (i * VMXNET3_REG_ALIGN)), | |
2305 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2306 | } | |
d1a890fa SB |
2307 | |
2308 | /* Apply the rx filter settins last. */ | |
2309 | vmxnet3_set_mc(adapter->netdev); | |
2310 | ||
2311 | /* | |
2312 | * Check link state when first activating device. It will start the | |
2313 | * tx queue if the link is up. | |
2314 | */ | |
4a1745fc | 2315 | vmxnet3_check_link(adapter, true); |
09c5088e SB |
2316 | for (i = 0; i < adapter->num_rx_queues; i++) |
2317 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2318 | vmxnet3_enable_all_intrs(adapter); |
2319 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2320 | return 0; | |
2321 | ||
2322 | activate_err: | |
2323 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2324 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2325 | vmxnet3_free_irqs(adapter); | |
2326 | irq_err: | |
2327 | rq_err: | |
2328 | /* free up buffers we allocated */ | |
09c5088e | 2329 | vmxnet3_rq_cleanup_all(adapter); |
d1a890fa SB |
2330 | return err; |
2331 | } | |
2332 | ||
2333 | ||
2334 | void | |
2335 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2336 | { | |
83d0feff SB |
2337 | unsigned long flags; |
2338 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
d1a890fa | 2339 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); |
83d0feff | 2340 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2341 | } |
2342 | ||
2343 | ||
2344 | int | |
2345 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2346 | { | |
09c5088e | 2347 | int i; |
83d0feff | 2348 | unsigned long flags; |
d1a890fa SB |
2349 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) |
2350 | return 0; | |
2351 | ||
2352 | ||
83d0feff | 2353 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2354 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2355 | VMXNET3_CMD_QUIESCE_DEV); | |
83d0feff | 2356 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2357 | vmxnet3_disable_all_intrs(adapter); |
2358 | ||
09c5088e SB |
2359 | for (i = 0; i < adapter->num_rx_queues; i++) |
2360 | napi_disable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2361 | netif_tx_disable(adapter->netdev); |
2362 | adapter->link_speed = 0; | |
2363 | netif_carrier_off(adapter->netdev); | |
2364 | ||
09c5088e SB |
2365 | vmxnet3_tq_cleanup_all(adapter); |
2366 | vmxnet3_rq_cleanup_all(adapter); | |
d1a890fa SB |
2367 | vmxnet3_free_irqs(adapter); |
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | ||
2372 | static void | |
2373 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2374 | { | |
2375 | u32 tmp; | |
2376 | ||
2377 | tmp = *(u32 *)mac; | |
2378 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2379 | ||
2380 | tmp = (mac[5] << 8) | mac[4]; | |
2381 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2382 | } | |
2383 | ||
2384 | ||
2385 | static int | |
2386 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2387 | { | |
2388 | struct sockaddr *addr = p; | |
2389 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2390 | ||
2391 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2392 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2393 | ||
2394 | return 0; | |
2395 | } | |
2396 | ||
2397 | ||
2398 | /* ==================== initialization and cleanup routines ============ */ | |
2399 | ||
2400 | static int | |
2401 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64) | |
2402 | { | |
2403 | int err; | |
2404 | unsigned long mmio_start, mmio_len; | |
2405 | struct pci_dev *pdev = adapter->pdev; | |
2406 | ||
2407 | err = pci_enable_device(pdev); | |
2408 | if (err) { | |
204a6e65 | 2409 | dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err); |
d1a890fa SB |
2410 | return err; |
2411 | } | |
2412 | ||
2413 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { | |
2414 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
204a6e65 SH |
2415 | dev_err(&pdev->dev, |
2416 | "pci_set_consistent_dma_mask failed\n"); | |
d1a890fa SB |
2417 | err = -EIO; |
2418 | goto err_set_mask; | |
2419 | } | |
2420 | *dma64 = true; | |
2421 | } else { | |
2422 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
204a6e65 SH |
2423 | dev_err(&pdev->dev, |
2424 | "pci_set_dma_mask failed\n"); | |
d1a890fa SB |
2425 | err = -EIO; |
2426 | goto err_set_mask; | |
2427 | } | |
2428 | *dma64 = false; | |
2429 | } | |
2430 | ||
2431 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, | |
2432 | vmxnet3_driver_name); | |
2433 | if (err) { | |
204a6e65 SH |
2434 | dev_err(&pdev->dev, |
2435 | "Failed to request region for adapter: error %d\n", err); | |
d1a890fa SB |
2436 | goto err_set_mask; |
2437 | } | |
2438 | ||
2439 | pci_set_master(pdev); | |
2440 | ||
2441 | mmio_start = pci_resource_start(pdev, 0); | |
2442 | mmio_len = pci_resource_len(pdev, 0); | |
2443 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2444 | if (!adapter->hw_addr0) { | |
204a6e65 | 2445 | dev_err(&pdev->dev, "Failed to map bar0\n"); |
d1a890fa SB |
2446 | err = -EIO; |
2447 | goto err_ioremap; | |
2448 | } | |
2449 | ||
2450 | mmio_start = pci_resource_start(pdev, 1); | |
2451 | mmio_len = pci_resource_len(pdev, 1); | |
2452 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2453 | if (!adapter->hw_addr1) { | |
204a6e65 | 2454 | dev_err(&pdev->dev, "Failed to map bar1\n"); |
d1a890fa SB |
2455 | err = -EIO; |
2456 | goto err_bar1; | |
2457 | } | |
2458 | return 0; | |
2459 | ||
2460 | err_bar1: | |
2461 | iounmap(adapter->hw_addr0); | |
2462 | err_ioremap: | |
2463 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
2464 | err_set_mask: | |
2465 | pci_disable_device(pdev); | |
2466 | return err; | |
2467 | } | |
2468 | ||
2469 | ||
2470 | static void | |
2471 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2472 | { | |
2473 | BUG_ON(!adapter->pdev); | |
2474 | ||
2475 | iounmap(adapter->hw_addr0); | |
2476 | iounmap(adapter->hw_addr1); | |
2477 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2478 | pci_disable_device(adapter->pdev); | |
2479 | } | |
2480 | ||
2481 | ||
2482 | static void | |
2483 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2484 | { | |
09c5088e SB |
2485 | size_t sz, i, ring0_size, ring1_size, comp_size; |
2486 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[0]; | |
2487 | ||
d1a890fa SB |
2488 | |
2489 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - | |
2490 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2491 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2492 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2493 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2494 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2495 | ||
2496 | adapter->rx_buf_per_pkt = 1; | |
2497 | } else { | |
2498 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2499 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2500 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2501 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2502 | } | |
2503 | ||
2504 | /* | |
2505 | * for simplicity, force the ring0 size to be a multiple of | |
2506 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2507 | */ | |
2508 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
09c5088e SB |
2509 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; |
2510 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
a53255d3 | 2511 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / |
09c5088e SB |
2512 | sz * sz); |
2513 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
2514 | comp_size = ring0_size + ring1_size; | |
2515 | ||
2516 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2517 | rq = &adapter->rx_queue[i]; | |
2518 | rq->rx_ring[0].size = ring0_size; | |
2519 | rq->rx_ring[1].size = ring1_size; | |
2520 | rq->comp_ring.size = comp_size; | |
2521 | } | |
d1a890fa SB |
2522 | } |
2523 | ||
2524 | ||
2525 | int | |
2526 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
2527 | u32 rx_ring_size, u32 rx_ring2_size) | |
2528 | { | |
09c5088e SB |
2529 | int err = 0, i; |
2530 | ||
2531 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2532 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2533 | tq->tx_ring.size = tx_ring_size; | |
2534 | tq->data_ring.size = tx_ring_size; | |
2535 | tq->comp_ring.size = tx_ring_size; | |
2536 | tq->shared = &adapter->tqd_start[i].ctrl; | |
2537 | tq->stopped = true; | |
2538 | tq->adapter = adapter; | |
2539 | tq->qid = i; | |
2540 | err = vmxnet3_tq_create(tq, adapter); | |
2541 | /* | |
2542 | * Too late to change num_tx_queues. We cannot do away with | |
2543 | * lesser number of queues than what we asked for | |
2544 | */ | |
2545 | if (err) | |
2546 | goto queue_err; | |
2547 | } | |
d1a890fa | 2548 | |
09c5088e SB |
2549 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; |
2550 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
d1a890fa | 2551 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e SB |
2552 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2553 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2554 | /* qid and qid2 for rx queues will be assigned later when num | |
2555 | * of rx queues is finalized after allocating intrs */ | |
2556 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2557 | rq->adapter = adapter; | |
2558 | err = vmxnet3_rq_create(rq, adapter); | |
2559 | if (err) { | |
2560 | if (i == 0) { | |
204a6e65 SH |
2561 | netdev_err(adapter->netdev, |
2562 | "Could not allocate any rx queues. " | |
2563 | "Aborting.\n"); | |
09c5088e SB |
2564 | goto queue_err; |
2565 | } else { | |
204a6e65 SH |
2566 | netdev_info(adapter->netdev, |
2567 | "Number of rx queues changed " | |
2568 | "to : %d.\n", i); | |
09c5088e SB |
2569 | adapter->num_rx_queues = i; |
2570 | err = 0; | |
2571 | break; | |
2572 | } | |
2573 | } | |
2574 | } | |
2575 | return err; | |
2576 | queue_err: | |
2577 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2578 | return err; |
2579 | } | |
2580 | ||
2581 | static int | |
2582 | vmxnet3_open(struct net_device *netdev) | |
2583 | { | |
2584 | struct vmxnet3_adapter *adapter; | |
09c5088e | 2585 | int err, i; |
d1a890fa SB |
2586 | |
2587 | adapter = netdev_priv(netdev); | |
2588 | ||
09c5088e SB |
2589 | for (i = 0; i < adapter->num_tx_queues; i++) |
2590 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
d1a890fa | 2591 | |
f00e2b0a NH |
2592 | err = vmxnet3_create_queues(adapter, adapter->tx_ring_size, |
2593 | adapter->rx_ring_size, | |
d1a890fa SB |
2594 | VMXNET3_DEF_RX_RING_SIZE); |
2595 | if (err) | |
2596 | goto queue_err; | |
2597 | ||
2598 | err = vmxnet3_activate_dev(adapter); | |
2599 | if (err) | |
2600 | goto activate_err; | |
2601 | ||
2602 | return 0; | |
2603 | ||
2604 | activate_err: | |
09c5088e SB |
2605 | vmxnet3_rq_destroy_all(adapter); |
2606 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2607 | queue_err: |
2608 | return err; | |
2609 | } | |
2610 | ||
2611 | ||
2612 | static int | |
2613 | vmxnet3_close(struct net_device *netdev) | |
2614 | { | |
2615 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2616 | ||
2617 | /* | |
2618 | * Reset_work may be in the middle of resetting the device, wait for its | |
2619 | * completion. | |
2620 | */ | |
2621 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2622 | msleep(1); | |
2623 | ||
2624 | vmxnet3_quiesce_dev(adapter); | |
2625 | ||
09c5088e SB |
2626 | vmxnet3_rq_destroy_all(adapter); |
2627 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2628 | |
2629 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2630 | ||
2631 | ||
2632 | return 0; | |
2633 | } | |
2634 | ||
2635 | ||
2636 | void | |
2637 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
2638 | { | |
09c5088e SB |
2639 | int i; |
2640 | ||
d1a890fa SB |
2641 | /* |
2642 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
2643 | * vmxnet3_close() will deadlock. | |
2644 | */ | |
2645 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
2646 | ||
2647 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
09c5088e SB |
2648 | for (i = 0; i < adapter->num_rx_queues; i++) |
2649 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2650 | dev_close(adapter->netdev); |
2651 | } | |
2652 | ||
2653 | ||
2654 | static int | |
2655 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
2656 | { | |
2657 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2658 | int err = 0; | |
2659 | ||
2660 | if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU) | |
2661 | return -EINVAL; | |
2662 | ||
d1a890fa SB |
2663 | netdev->mtu = new_mtu; |
2664 | ||
2665 | /* | |
2666 | * Reset_work may be in the middle of resetting the device, wait for its | |
2667 | * completion. | |
2668 | */ | |
2669 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2670 | msleep(1); | |
2671 | ||
2672 | if (netif_running(netdev)) { | |
2673 | vmxnet3_quiesce_dev(adapter); | |
2674 | vmxnet3_reset_dev(adapter); | |
2675 | ||
2676 | /* we need to re-create the rx queue based on the new mtu */ | |
09c5088e | 2677 | vmxnet3_rq_destroy_all(adapter); |
d1a890fa | 2678 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e | 2679 | err = vmxnet3_rq_create_all(adapter); |
d1a890fa | 2680 | if (err) { |
204a6e65 SH |
2681 | netdev_err(netdev, |
2682 | "failed to re-create rx queues, " | |
2683 | " error %d. Closing it.\n", err); | |
d1a890fa SB |
2684 | goto out; |
2685 | } | |
2686 | ||
2687 | err = vmxnet3_activate_dev(adapter); | |
2688 | if (err) { | |
204a6e65 SH |
2689 | netdev_err(netdev, |
2690 | "failed to re-activate, error %d. " | |
2691 | "Closing it\n", err); | |
d1a890fa SB |
2692 | goto out; |
2693 | } | |
2694 | } | |
2695 | ||
2696 | out: | |
2697 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2698 | if (err) | |
2699 | vmxnet3_force_close(adapter); | |
2700 | ||
2701 | return err; | |
2702 | } | |
2703 | ||
2704 | ||
2705 | static void | |
2706 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
2707 | { | |
2708 | struct net_device *netdev = adapter->netdev; | |
2709 | ||
a0d2730c | 2710 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
f646968f PM |
2711 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | |
2712 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
72e85c45 | 2713 | NETIF_F_LRO; |
a0d2730c | 2714 | if (dma64) |
ebbf9295 | 2715 | netdev->hw_features |= NETIF_F_HIGHDMA; |
72e85c45 | 2716 | netdev->vlan_features = netdev->hw_features & |
f646968f PM |
2717 | ~(NETIF_F_HW_VLAN_CTAG_TX | |
2718 | NETIF_F_HW_VLAN_CTAG_RX); | |
2719 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; | |
d1a890fa SB |
2720 | } |
2721 | ||
2722 | ||
2723 | static void | |
2724 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2725 | { | |
2726 | u32 tmp; | |
2727 | ||
2728 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
2729 | *(u32 *)mac = tmp; | |
2730 | ||
2731 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
2732 | mac[4] = tmp & 0xff; | |
2733 | mac[5] = (tmp >> 8) & 0xff; | |
2734 | } | |
2735 | ||
09c5088e SB |
2736 | #ifdef CONFIG_PCI_MSI |
2737 | ||
2738 | /* | |
2739 | * Enable MSIx vectors. | |
2740 | * Returns : | |
25985edc | 2741 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required |
b60b869d AG |
2742 | * were enabled. |
2743 | * number of vectors which were enabled otherwise (this number is greater | |
09c5088e SB |
2744 | * than VMXNET3_LINUX_MIN_MSIX_VECT) |
2745 | */ | |
2746 | ||
2747 | static int | |
b60b869d | 2748 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec) |
09c5088e | 2749 | { |
c0a1be38 AG |
2750 | int ret = pci_enable_msix_range(adapter->pdev, |
2751 | adapter->intr.msix_entries, nvec, nvec); | |
09c5088e | 2752 | |
c0a1be38 AG |
2753 | if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) { |
2754 | dev_err(&adapter->netdev->dev, | |
2755 | "Failed to enable %d MSI-X, trying %d\n", | |
2756 | nvec, VMXNET3_LINUX_MIN_MSIX_VECT); | |
2757 | ||
2758 | ret = pci_enable_msix_range(adapter->pdev, | |
2759 | adapter->intr.msix_entries, | |
2760 | VMXNET3_LINUX_MIN_MSIX_VECT, | |
2761 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
2762 | } | |
2763 | ||
2764 | if (ret < 0) { | |
2765 | dev_err(&adapter->netdev->dev, | |
2766 | "Failed to enable MSI-X, error: %d\n", ret); | |
2767 | } | |
2768 | ||
2769 | return ret; | |
09c5088e SB |
2770 | } |
2771 | ||
2772 | ||
2773 | #endif /* CONFIG_PCI_MSI */ | |
d1a890fa SB |
2774 | |
2775 | static void | |
2776 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
2777 | { | |
2778 | u32 cfg; | |
e328d410 | 2779 | unsigned long flags; |
d1a890fa SB |
2780 | |
2781 | /* intr settings */ | |
e328d410 | 2782 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2783 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2784 | VMXNET3_CMD_GET_CONF_INTR); | |
2785 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
e328d410 | 2786 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2787 | adapter->intr.type = cfg & 0x3; |
2788 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
2789 | ||
2790 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
0bdc0d70 SB |
2791 | adapter->intr.type = VMXNET3_IT_MSIX; |
2792 | } | |
d1a890fa | 2793 | |
8f7e524c | 2794 | #ifdef CONFIG_PCI_MSI |
0bdc0d70 | 2795 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
b60b869d AG |
2796 | int i, nvec; |
2797 | ||
2798 | nvec = adapter->share_intr == VMXNET3_INTR_TXSHARE ? | |
2799 | 1 : adapter->num_tx_queues; | |
2800 | nvec += adapter->share_intr == VMXNET3_INTR_BUDDYSHARE ? | |
2801 | 0 : adapter->num_rx_queues; | |
2802 | nvec += 1; /* for link event */ | |
2803 | nvec = nvec > VMXNET3_LINUX_MIN_MSIX_VECT ? | |
2804 | nvec : VMXNET3_LINUX_MIN_MSIX_VECT; | |
2805 | ||
2806 | for (i = 0; i < nvec; i++) | |
2807 | adapter->intr.msix_entries[i].entry = i; | |
2808 | ||
2809 | nvec = vmxnet3_acquire_msix_vectors(adapter, nvec); | |
2810 | if (nvec < 0) | |
2811 | goto msix_err; | |
2812 | ||
09c5088e SB |
2813 | /* If we cannot allocate one MSIx vector per queue |
2814 | * then limit the number of rx queues to 1 | |
2815 | */ | |
b60b869d | 2816 | if (nvec == VMXNET3_LINUX_MIN_MSIX_VECT) { |
09c5088e | 2817 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE |
7e96fbf2 | 2818 | || adapter->num_rx_queues != 1) { |
09c5088e | 2819 | adapter->share_intr = VMXNET3_INTR_TXSHARE; |
204a6e65 SH |
2820 | netdev_err(adapter->netdev, |
2821 | "Number of rx queues : 1\n"); | |
09c5088e | 2822 | adapter->num_rx_queues = 1; |
09c5088e | 2823 | } |
d1a890fa | 2824 | } |
09c5088e | 2825 | |
b60b869d AG |
2826 | adapter->intr.num_intrs = nvec; |
2827 | return; | |
2828 | ||
2829 | msix_err: | |
09c5088e | 2830 | /* If we cannot allocate MSIx vectors use only one rx queue */ |
4bad25fa SH |
2831 | dev_info(&adapter->pdev->dev, |
2832 | "Failed to enable MSI-X, error %d. " | |
b60b869d | 2833 | "Limiting #rx queues to 1, try MSI.\n", nvec); |
09c5088e | 2834 | |
0bdc0d70 SB |
2835 | adapter->intr.type = VMXNET3_IT_MSI; |
2836 | } | |
d1a890fa | 2837 | |
0bdc0d70 | 2838 | if (adapter->intr.type == VMXNET3_IT_MSI) { |
b60b869d | 2839 | if (!pci_enable_msi(adapter->pdev)) { |
09c5088e | 2840 | adapter->num_rx_queues = 1; |
d1a890fa | 2841 | adapter->intr.num_intrs = 1; |
d1a890fa SB |
2842 | return; |
2843 | } | |
2844 | } | |
0bdc0d70 | 2845 | #endif /* CONFIG_PCI_MSI */ |
d1a890fa | 2846 | |
09c5088e | 2847 | adapter->num_rx_queues = 1; |
204a6e65 SH |
2848 | dev_info(&adapter->netdev->dev, |
2849 | "Using INTx interrupt, #Rx queues: 1.\n"); | |
d1a890fa SB |
2850 | adapter->intr.type = VMXNET3_IT_INTX; |
2851 | ||
2852 | /* INT-X related setting */ | |
2853 | adapter->intr.num_intrs = 1; | |
2854 | } | |
2855 | ||
2856 | ||
2857 | static void | |
2858 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
2859 | { | |
2860 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
2861 | pci_disable_msix(adapter->pdev); | |
2862 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
2863 | pci_disable_msi(adapter->pdev); | |
2864 | else | |
2865 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
2866 | } | |
2867 | ||
2868 | ||
2869 | static void | |
2870 | vmxnet3_tx_timeout(struct net_device *netdev) | |
2871 | { | |
2872 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2873 | adapter->tx_timeout_count++; | |
2874 | ||
204a6e65 | 2875 | netdev_err(adapter->netdev, "tx hang\n"); |
d1a890fa | 2876 | schedule_work(&adapter->work); |
09c5088e | 2877 | netif_wake_queue(adapter->netdev); |
d1a890fa SB |
2878 | } |
2879 | ||
2880 | ||
2881 | static void | |
2882 | vmxnet3_reset_work(struct work_struct *data) | |
2883 | { | |
2884 | struct vmxnet3_adapter *adapter; | |
2885 | ||
2886 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
2887 | ||
2888 | /* if another thread is resetting the device, no need to proceed */ | |
2889 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
2890 | return; | |
2891 | ||
2892 | /* if the device is closed, we must leave it alone */ | |
d9a5f210 | 2893 | rtnl_lock(); |
d1a890fa | 2894 | if (netif_running(adapter->netdev)) { |
204a6e65 | 2895 | netdev_notice(adapter->netdev, "resetting\n"); |
d1a890fa SB |
2896 | vmxnet3_quiesce_dev(adapter); |
2897 | vmxnet3_reset_dev(adapter); | |
2898 | vmxnet3_activate_dev(adapter); | |
2899 | } else { | |
204a6e65 | 2900 | netdev_info(adapter->netdev, "already closed\n"); |
d1a890fa | 2901 | } |
d9a5f210 | 2902 | rtnl_unlock(); |
d1a890fa SB |
2903 | |
2904 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
2905 | } | |
2906 | ||
2907 | ||
3a4751a3 | 2908 | static int |
d1a890fa SB |
2909 | vmxnet3_probe_device(struct pci_dev *pdev, |
2910 | const struct pci_device_id *id) | |
2911 | { | |
2912 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
2913 | .ndo_open = vmxnet3_open, | |
2914 | .ndo_stop = vmxnet3_close, | |
2915 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
2916 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
2917 | .ndo_change_mtu = vmxnet3_change_mtu, | |
a0d2730c | 2918 | .ndo_set_features = vmxnet3_set_features, |
95305f6c | 2919 | .ndo_get_stats64 = vmxnet3_get_stats64, |
d1a890fa | 2920 | .ndo_tx_timeout = vmxnet3_tx_timeout, |
afc4b13d | 2921 | .ndo_set_rx_mode = vmxnet3_set_mc, |
d1a890fa SB |
2922 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, |
2923 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
2924 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2925 | .ndo_poll_controller = vmxnet3_netpoll, | |
2926 | #endif | |
2927 | }; | |
2928 | int err; | |
2929 | bool dma64 = false; /* stupid gcc */ | |
2930 | u32 ver; | |
2931 | struct net_device *netdev; | |
2932 | struct vmxnet3_adapter *adapter; | |
2933 | u8 mac[ETH_ALEN]; | |
09c5088e SB |
2934 | int size; |
2935 | int num_tx_queues; | |
2936 | int num_rx_queues; | |
2937 | ||
e154b639 SB |
2938 | if (!pci_msi_enabled()) |
2939 | enable_mq = 0; | |
2940 | ||
09c5088e SB |
2941 | #ifdef VMXNET3_RSS |
2942 | if (enable_mq) | |
2943 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
2944 | (int)num_online_cpus()); | |
2945 | else | |
2946 | #endif | |
2947 | num_rx_queues = 1; | |
eebb02b1 | 2948 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
09c5088e SB |
2949 | |
2950 | if (enable_mq) | |
2951 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
2952 | (int)num_online_cpus()); | |
2953 | else | |
2954 | num_tx_queues = 1; | |
2955 | ||
eebb02b1 | 2956 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); |
09c5088e SB |
2957 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), |
2958 | max(num_tx_queues, num_rx_queues)); | |
204a6e65 SH |
2959 | dev_info(&pdev->dev, |
2960 | "# of Tx queues : %d, # of Rx queues : %d\n", | |
2961 | num_tx_queues, num_rx_queues); | |
d1a890fa | 2962 | |
41de8d4c | 2963 | if (!netdev) |
d1a890fa | 2964 | return -ENOMEM; |
d1a890fa SB |
2965 | |
2966 | pci_set_drvdata(pdev, netdev); | |
2967 | adapter = netdev_priv(netdev); | |
2968 | adapter->netdev = netdev; | |
2969 | adapter->pdev = pdev; | |
2970 | ||
f00e2b0a NH |
2971 | adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; |
2972 | adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; | |
2973 | ||
83d0feff | 2974 | spin_lock_init(&adapter->cmd_lock); |
b0eb57cb AK |
2975 | adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter, |
2976 | sizeof(struct vmxnet3_adapter), | |
2977 | PCI_DMA_TODEVICE); | |
2978 | adapter->shared = dma_alloc_coherent( | |
2979 | &adapter->pdev->dev, | |
2980 | sizeof(struct Vmxnet3_DriverShared), | |
2981 | &adapter->shared_pa, GFP_KERNEL); | |
d1a890fa | 2982 | if (!adapter->shared) { |
204a6e65 | 2983 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
2984 | err = -ENOMEM; |
2985 | goto err_alloc_shared; | |
2986 | } | |
2987 | ||
09c5088e SB |
2988 | adapter->num_rx_queues = num_rx_queues; |
2989 | adapter->num_tx_queues = num_tx_queues; | |
e4fabf2b | 2990 | adapter->rx_buf_per_pkt = 1; |
09c5088e SB |
2991 | |
2992 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
2993 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
b0eb57cb AK |
2994 | adapter->tqd_start = dma_alloc_coherent(&adapter->pdev->dev, size, |
2995 | &adapter->queue_desc_pa, | |
2996 | GFP_KERNEL); | |
d1a890fa SB |
2997 | |
2998 | if (!adapter->tqd_start) { | |
204a6e65 | 2999 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
3000 | err = -ENOMEM; |
3001 | goto err_alloc_queue_desc; | |
3002 | } | |
09c5088e | 3003 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + |
96800ee7 | 3004 | adapter->num_tx_queues); |
d1a890fa | 3005 | |
b0eb57cb AK |
3006 | adapter->pm_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3007 | sizeof(struct Vmxnet3_PMConf), | |
3008 | &adapter->pm_conf_pa, | |
3009 | GFP_KERNEL); | |
d1a890fa | 3010 | if (adapter->pm_conf == NULL) { |
d1a890fa SB |
3011 | err = -ENOMEM; |
3012 | goto err_alloc_pm; | |
3013 | } | |
3014 | ||
09c5088e SB |
3015 | #ifdef VMXNET3_RSS |
3016 | ||
b0eb57cb AK |
3017 | adapter->rss_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3018 | sizeof(struct UPT1_RSSConf), | |
3019 | &adapter->rss_conf_pa, | |
3020 | GFP_KERNEL); | |
09c5088e | 3021 | if (adapter->rss_conf == NULL) { |
09c5088e SB |
3022 | err = -ENOMEM; |
3023 | goto err_alloc_rss; | |
3024 | } | |
3025 | #endif /* VMXNET3_RSS */ | |
3026 | ||
d1a890fa SB |
3027 | err = vmxnet3_alloc_pci_resources(adapter, &dma64); |
3028 | if (err < 0) | |
3029 | goto err_alloc_pci; | |
3030 | ||
3031 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
3032 | if (ver & 1) { | |
3033 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1); | |
3034 | } else { | |
204a6e65 SH |
3035 | dev_err(&pdev->dev, |
3036 | "Incompatible h/w version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3037 | err = -EBUSY; |
3038 | goto err_ver; | |
3039 | } | |
3040 | ||
3041 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3042 | if (ver & 1) { | |
3043 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3044 | } else { | |
204a6e65 SH |
3045 | dev_err(&pdev->dev, |
3046 | "Incompatible upt version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3047 | err = -EBUSY; |
3048 | goto err_ver; | |
3049 | } | |
3050 | ||
e101e7dd | 3051 | SET_NETDEV_DEV(netdev, &pdev->dev); |
d1a890fa SB |
3052 | vmxnet3_declare_features(adapter, dma64); |
3053 | ||
4db37a78 SH |
3054 | if (adapter->num_tx_queues == adapter->num_rx_queues) |
3055 | adapter->share_intr = VMXNET3_INTR_BUDDYSHARE; | |
3056 | else | |
09c5088e SB |
3057 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; |
3058 | ||
d1a890fa SB |
3059 | vmxnet3_alloc_intr_resources(adapter); |
3060 | ||
09c5088e SB |
3061 | #ifdef VMXNET3_RSS |
3062 | if (adapter->num_rx_queues > 1 && | |
3063 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3064 | adapter->rss = true; | |
7db11f75 SH |
3065 | netdev->hw_features |= NETIF_F_RXHASH; |
3066 | netdev->features |= NETIF_F_RXHASH; | |
204a6e65 | 3067 | dev_dbg(&pdev->dev, "RSS is enabled.\n"); |
09c5088e SB |
3068 | } else { |
3069 | adapter->rss = false; | |
3070 | } | |
3071 | #endif | |
3072 | ||
d1a890fa SB |
3073 | vmxnet3_read_mac_addr(adapter, mac); |
3074 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3075 | ||
3076 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
d1a890fa | 3077 | vmxnet3_set_ethtool_ops(netdev); |
09c5088e | 3078 | netdev->watchdog_timeo = 5 * HZ; |
d1a890fa SB |
3079 | |
3080 | INIT_WORK(&adapter->work, vmxnet3_reset_work); | |
e3bc4ffb | 3081 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); |
d1a890fa | 3082 | |
09c5088e SB |
3083 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
3084 | int i; | |
3085 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3086 | netif_napi_add(adapter->netdev, | |
3087 | &adapter->rx_queue[i].napi, | |
3088 | vmxnet3_poll_rx_only, 64); | |
3089 | } | |
3090 | } else { | |
3091 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3092 | vmxnet3_poll, 64); | |
3093 | } | |
3094 | ||
3095 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3096 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3097 | ||
6cdd20c3 | 3098 | netif_carrier_off(netdev); |
d1a890fa SB |
3099 | err = register_netdev(netdev); |
3100 | ||
3101 | if (err) { | |
204a6e65 | 3102 | dev_err(&pdev->dev, "Failed to register adapter\n"); |
d1a890fa SB |
3103 | goto err_register; |
3104 | } | |
3105 | ||
4a1745fc | 3106 | vmxnet3_check_link(adapter, false); |
d1a890fa SB |
3107 | return 0; |
3108 | ||
3109 | err_register: | |
3110 | vmxnet3_free_intr_resources(adapter); | |
3111 | err_ver: | |
3112 | vmxnet3_free_pci_resources(adapter); | |
3113 | err_alloc_pci: | |
09c5088e | 3114 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3115 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3116 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e SB |
3117 | err_alloc_rss: |
3118 | #endif | |
b0eb57cb AK |
3119 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3120 | adapter->pm_conf, adapter->pm_conf_pa); | |
d1a890fa | 3121 | err_alloc_pm: |
b0eb57cb AK |
3122 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3123 | adapter->queue_desc_pa); | |
d1a890fa | 3124 | err_alloc_queue_desc: |
b0eb57cb AK |
3125 | dma_free_coherent(&adapter->pdev->dev, |
3126 | sizeof(struct Vmxnet3_DriverShared), | |
3127 | adapter->shared, adapter->shared_pa); | |
d1a890fa | 3128 | err_alloc_shared: |
b0eb57cb AK |
3129 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, |
3130 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
d1a890fa SB |
3131 | free_netdev(netdev); |
3132 | return err; | |
3133 | } | |
3134 | ||
3135 | ||
3a4751a3 | 3136 | static void |
d1a890fa SB |
3137 | vmxnet3_remove_device(struct pci_dev *pdev) |
3138 | { | |
3139 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3140 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
09c5088e SB |
3141 | int size = 0; |
3142 | int num_rx_queues; | |
3143 | ||
3144 | #ifdef VMXNET3_RSS | |
3145 | if (enable_mq) | |
3146 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3147 | (int)num_online_cpus()); | |
3148 | else | |
3149 | #endif | |
3150 | num_rx_queues = 1; | |
eebb02b1 | 3151 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
d1a890fa | 3152 | |
23f333a2 | 3153 | cancel_work_sync(&adapter->work); |
d1a890fa SB |
3154 | |
3155 | unregister_netdev(netdev); | |
3156 | ||
3157 | vmxnet3_free_intr_resources(adapter); | |
3158 | vmxnet3_free_pci_resources(adapter); | |
09c5088e | 3159 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3160 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3161 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e | 3162 | #endif |
b0eb57cb AK |
3163 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3164 | adapter->pm_conf, adapter->pm_conf_pa); | |
09c5088e SB |
3165 | |
3166 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3167 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
b0eb57cb AK |
3168 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3169 | adapter->queue_desc_pa); | |
3170 | dma_free_coherent(&adapter->pdev->dev, | |
3171 | sizeof(struct Vmxnet3_DriverShared), | |
3172 | adapter->shared, adapter->shared_pa); | |
3173 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, | |
3174 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
d1a890fa SB |
3175 | free_netdev(netdev); |
3176 | } | |
3177 | ||
3178 | ||
3179 | #ifdef CONFIG_PM | |
3180 | ||
3181 | static int | |
3182 | vmxnet3_suspend(struct device *device) | |
3183 | { | |
3184 | struct pci_dev *pdev = to_pci_dev(device); | |
3185 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3186 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3187 | struct Vmxnet3_PMConf *pmConf; | |
3188 | struct ethhdr *ehdr; | |
3189 | struct arphdr *ahdr; | |
3190 | u8 *arpreq; | |
3191 | struct in_device *in_dev; | |
3192 | struct in_ifaddr *ifa; | |
83d0feff | 3193 | unsigned long flags; |
d1a890fa SB |
3194 | int i = 0; |
3195 | ||
3196 | if (!netif_running(netdev)) | |
3197 | return 0; | |
3198 | ||
51956cd6 SB |
3199 | for (i = 0; i < adapter->num_rx_queues; i++) |
3200 | napi_disable(&adapter->rx_queue[i].napi); | |
3201 | ||
d1a890fa SB |
3202 | vmxnet3_disable_all_intrs(adapter); |
3203 | vmxnet3_free_irqs(adapter); | |
3204 | vmxnet3_free_intr_resources(adapter); | |
3205 | ||
3206 | netif_device_detach(netdev); | |
09c5088e | 3207 | netif_tx_stop_all_queues(netdev); |
d1a890fa SB |
3208 | |
3209 | /* Create wake-up filters. */ | |
3210 | pmConf = adapter->pm_conf; | |
3211 | memset(pmConf, 0, sizeof(*pmConf)); | |
3212 | ||
3213 | if (adapter->wol & WAKE_UCAST) { | |
3214 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3215 | pmConf->filters[i].maskSize = 1; | |
3216 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3217 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3218 | ||
3843e515 | 3219 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3220 | i++; |
3221 | } | |
3222 | ||
3223 | if (adapter->wol & WAKE_ARP) { | |
3224 | in_dev = in_dev_get(netdev); | |
3225 | if (!in_dev) | |
3226 | goto skip_arp; | |
3227 | ||
3228 | ifa = (struct in_ifaddr *)in_dev->ifa_list; | |
3229 | if (!ifa) | |
3230 | goto skip_arp; | |
3231 | ||
3232 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3233 | sizeof(struct arphdr) + /* ARP header */ | |
3234 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3235 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3236 | pmConf->filters[i].maskSize = | |
3237 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3238 | ||
3239 | /* ETH_P_ARP in Ethernet header. */ | |
3240 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3241 | ehdr->h_proto = htons(ETH_P_ARP); | |
3242 | ||
3243 | /* ARPOP_REQUEST in ARP header. */ | |
3244 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3245 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3246 | arpreq = (u8 *)(ahdr + 1); | |
3247 | ||
3248 | /* The Unicast IPv4 address in 'tip' field. */ | |
3249 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
3250 | *(u32 *)arpreq = ifa->ifa_address; | |
3251 | ||
3252 | /* The mask for the relevant bits. */ | |
3253 | pmConf->filters[i].mask[0] = 0x00; | |
3254 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3255 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3256 | pmConf->filters[i].mask[3] = 0x00; | |
3257 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3258 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
3259 | in_dev_put(in_dev); | |
3260 | ||
3843e515 | 3261 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3262 | i++; |
3263 | } | |
3264 | ||
3265 | skip_arp: | |
3266 | if (adapter->wol & WAKE_MAGIC) | |
3843e515 | 3267 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; |
d1a890fa SB |
3268 | |
3269 | pmConf->numFilters = i; | |
3270 | ||
115924b6 SB |
3271 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3272 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3273 | *pmConf)); | |
b0eb57cb AK |
3274 | adapter->shared->devRead.pmConfDesc.confPA = |
3275 | cpu_to_le64(adapter->pm_conf_pa); | |
d1a890fa | 3276 | |
83d0feff | 3277 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3278 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3279 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3280 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3281 | |
3282 | pci_save_state(pdev); | |
3283 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3284 | adapter->wol); | |
3285 | pci_disable_device(pdev); | |
3286 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3287 | ||
3288 | return 0; | |
3289 | } | |
3290 | ||
3291 | ||
3292 | static int | |
3293 | vmxnet3_resume(struct device *device) | |
3294 | { | |
51956cd6 | 3295 | int err, i = 0; |
83d0feff | 3296 | unsigned long flags; |
d1a890fa SB |
3297 | struct pci_dev *pdev = to_pci_dev(device); |
3298 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3299 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3300 | struct Vmxnet3_PMConf *pmConf; | |
3301 | ||
3302 | if (!netif_running(netdev)) | |
3303 | return 0; | |
3304 | ||
3305 | /* Destroy wake-up filters. */ | |
3306 | pmConf = adapter->pm_conf; | |
3307 | memset(pmConf, 0, sizeof(*pmConf)); | |
3308 | ||
115924b6 SB |
3309 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3310 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3311 | *pmConf)); | |
b0eb57cb AK |
3312 | adapter->shared->devRead.pmConfDesc.confPA = |
3313 | cpu_to_le64(adapter->pm_conf_pa); | |
d1a890fa SB |
3314 | |
3315 | netif_device_attach(netdev); | |
3316 | pci_set_power_state(pdev, PCI_D0); | |
3317 | pci_restore_state(pdev); | |
3318 | err = pci_enable_device_mem(pdev); | |
3319 | if (err != 0) | |
3320 | return err; | |
3321 | ||
3322 | pci_enable_wake(pdev, PCI_D0, 0); | |
3323 | ||
83d0feff | 3324 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3325 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3326 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3327 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3328 | vmxnet3_alloc_intr_resources(adapter); |
3329 | vmxnet3_request_irqs(adapter); | |
51956cd6 SB |
3330 | for (i = 0; i < adapter->num_rx_queues; i++) |
3331 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
3332 | vmxnet3_enable_all_intrs(adapter); |
3333 | ||
3334 | return 0; | |
3335 | } | |
3336 | ||
47145210 | 3337 | static const struct dev_pm_ops vmxnet3_pm_ops = { |
d1a890fa SB |
3338 | .suspend = vmxnet3_suspend, |
3339 | .resume = vmxnet3_resume, | |
3340 | }; | |
3341 | #endif | |
3342 | ||
3343 | static struct pci_driver vmxnet3_driver = { | |
3344 | .name = vmxnet3_driver_name, | |
3345 | .id_table = vmxnet3_pciid_table, | |
3346 | .probe = vmxnet3_probe_device, | |
3a4751a3 | 3347 | .remove = vmxnet3_remove_device, |
d1a890fa SB |
3348 | #ifdef CONFIG_PM |
3349 | .driver.pm = &vmxnet3_pm_ops, | |
3350 | #endif | |
3351 | }; | |
3352 | ||
3353 | ||
3354 | static int __init | |
3355 | vmxnet3_init_module(void) | |
3356 | { | |
204a6e65 | 3357 | pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC, |
d1a890fa SB |
3358 | VMXNET3_DRIVER_VERSION_REPORT); |
3359 | return pci_register_driver(&vmxnet3_driver); | |
3360 | } | |
3361 | ||
3362 | module_init(vmxnet3_init_module); | |
3363 | ||
3364 | ||
3365 | static void | |
3366 | vmxnet3_exit_module(void) | |
3367 | { | |
3368 | pci_unregister_driver(&vmxnet3_driver); | |
3369 | } | |
3370 | ||
3371 | module_exit(vmxnet3_exit_module); | |
3372 | ||
3373 | MODULE_AUTHOR("VMware, Inc."); | |
3374 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3375 | MODULE_LICENSE("GPL v2"); | |
3376 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |