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authorAmit Kumar Salecha <amit.salecha@qlogic.com>2010-01-12 19:37:25 -0500
committerDavid S. Miller <davem@davemloft.net>2010-01-16 04:17:15 -0500
commitaf19b49152bdb68fda894183e88096d6d1aa5c3d (patch)
tree811e6ecedf58c3356ac721a18d9a5270e9b2c40c /drivers/net/qlcnic/qlcnic_ctx.c
parent6eb3a8553345ba2b4efd5390709e158289b9ece4 (diff)
qlcnic: Qlogic ethernet driver for CNA devices
o 1G/10G Ethernet Driver for Qlgic QLE8240 and QLE8242 CNA devices. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/qlcnic/qlcnic_ctx.c')
-rw-r--r--drivers/net/qlcnic/qlcnic_ctx.c536
1 files changed, 536 insertions, 0 deletions
diff --git a/drivers/net/qlcnic/qlcnic_ctx.c b/drivers/net/qlcnic/qlcnic_ctx.c
new file mode 100644
index 000000000000..71c16a183458
--- /dev/null
+++ b/drivers/net/qlcnic/qlcnic_ctx.c
@@ -0,0 +1,536 @@
1/*
2 * Copyright (C) 2009 - QLogic Corporation.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any 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. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called "COPYING".
22 *
23 */
24
25#include "qlcnic.h"
26
27#define QLCHAL_VERSION 1
28
29static u32
30qlcnic_poll_rsp(struct qlcnic_adapter *adapter)
31{
32 u32 rsp;
33 int timeout = 0;
34
35 do {
36 /* give atleast 1ms for firmware to respond */
37 msleep(1);
38
39 if (++timeout > QLCNIC_OS_CRB_RETRY_COUNT)
40 return QLCNIC_CDRP_RSP_TIMEOUT;
41
42 rsp = QLCRD32(adapter, QLCNIC_CDRP_CRB_OFFSET);
43 } while (!QLCNIC_CDRP_IS_RSP(rsp));
44
45 return rsp;
46}
47
48static u32
49qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
50 u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
51{
52 u32 rsp;
53 u32 signature;
54 u32 rcode = QLCNIC_RCODE_SUCCESS;
55 struct pci_dev *pdev = adapter->pdev;
56
57 signature = QLCNIC_CDRP_SIGNATURE_MAKE(pci_fn, version);
58
59 /* Acquire semaphore before accessing CRB */
60 if (qlcnic_api_lock(adapter))
61 return QLCNIC_RCODE_TIMEOUT;
62
63 QLCWR32(adapter, QLCNIC_SIGN_CRB_OFFSET, signature);
64 QLCWR32(adapter, QLCNIC_ARG1_CRB_OFFSET, arg1);
65 QLCWR32(adapter, QLCNIC_ARG2_CRB_OFFSET, arg2);
66 QLCWR32(adapter, QLCNIC_ARG3_CRB_OFFSET, arg3);
67 QLCWR32(adapter, QLCNIC_CDRP_CRB_OFFSET, QLCNIC_CDRP_FORM_CMD(cmd));
68
69 rsp = qlcnic_poll_rsp(adapter);
70
71 if (rsp == QLCNIC_CDRP_RSP_TIMEOUT) {
72 dev_err(&pdev->dev, "card response timeout.\n");
73 rcode = QLCNIC_RCODE_TIMEOUT;
74 } else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
75 rcode = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
76 dev_err(&pdev->dev, "failed card response code:0x%x\n",
77 rcode);
78 }
79
80 /* Release semaphore */
81 qlcnic_api_unlock(adapter);
82
83 return rcode;
84}
85
86int
87qlcnic_fw_cmd_set_mtu(struct qlcnic_adapter *adapter, int mtu)
88{
89 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
90
91 if (recv_ctx->state == QLCNIC_HOST_CTX_STATE_ACTIVE) {
92 if (qlcnic_issue_cmd(adapter,
93 adapter->ahw.pci_func,
94 QLCHAL_VERSION,
95 recv_ctx->context_id,
96 mtu,
97 0,
98 QLCNIC_CDRP_CMD_SET_MTU)) {
99
100 dev_err(&adapter->pdev->dev, "Failed to set mtu\n");
101 return -EIO;
102 }
103 }
104
105 return 0;
106}
107
108static int
109qlcnic_fw_cmd_create_rx_ctx(struct qlcnic_adapter *adapter)
110{
111 void *addr;
112 struct qlcnic_hostrq_rx_ctx *prq;
113 struct qlcnic_cardrsp_rx_ctx *prsp;
114 struct qlcnic_hostrq_rds_ring *prq_rds;
115 struct qlcnic_hostrq_sds_ring *prq_sds;
116 struct qlcnic_cardrsp_rds_ring *prsp_rds;
117 struct qlcnic_cardrsp_sds_ring *prsp_sds;
118 struct qlcnic_host_rds_ring *rds_ring;
119 struct qlcnic_host_sds_ring *sds_ring;
120
121 dma_addr_t hostrq_phys_addr, cardrsp_phys_addr;
122 u64 phys_addr;
123
124 int i, nrds_rings, nsds_rings;
125 size_t rq_size, rsp_size;
126 u32 cap, reg, val;
127 int err;
128
129 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
130
131 nrds_rings = adapter->max_rds_rings;
132 nsds_rings = adapter->max_sds_rings;
133
134 rq_size =
135 SIZEOF_HOSTRQ_RX(struct qlcnic_hostrq_rx_ctx, nrds_rings,
136 nsds_rings);
137 rsp_size =
138 SIZEOF_CARDRSP_RX(struct qlcnic_cardrsp_rx_ctx, nrds_rings,
139 nsds_rings);
140
141 addr = pci_alloc_consistent(adapter->pdev,
142 rq_size, &hostrq_phys_addr);
143 if (addr == NULL)
144 return -ENOMEM;
145 prq = (struct qlcnic_hostrq_rx_ctx *)addr;
146
147 addr = pci_alloc_consistent(adapter->pdev,
148 rsp_size, &cardrsp_phys_addr);
149 if (addr == NULL) {
150 err = -ENOMEM;
151 goto out_free_rq;
152 }
153 prsp = (struct qlcnic_cardrsp_rx_ctx *)addr;
154
155 prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);
156
157 cap = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN);
158 cap |= (QLCNIC_CAP0_JUMBO_CONTIGUOUS | QLCNIC_CAP0_LRO_CONTIGUOUS);
159
160 prq->capabilities[0] = cpu_to_le32(cap);
161 prq->host_int_crb_mode =
162 cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
163 prq->host_rds_crb_mode =
164 cpu_to_le32(QLCNIC_HOST_RDS_CRB_MODE_UNIQUE);
165
166 prq->num_rds_rings = cpu_to_le16(nrds_rings);
167 prq->num_sds_rings = cpu_to_le16(nsds_rings);
168 prq->rds_ring_offset = cpu_to_le32(0);
169
170 val = le32_to_cpu(prq->rds_ring_offset) +
171 (sizeof(struct qlcnic_hostrq_rds_ring) * nrds_rings);
172 prq->sds_ring_offset = cpu_to_le32(val);
173
174 prq_rds = (struct qlcnic_hostrq_rds_ring *)(prq->data +
175 le32_to_cpu(prq->rds_ring_offset));
176
177 for (i = 0; i < nrds_rings; i++) {
178
179 rds_ring = &recv_ctx->rds_rings[i];
180
181 prq_rds[i].host_phys_addr = cpu_to_le64(rds_ring->phys_addr);
182 prq_rds[i].ring_size = cpu_to_le32(rds_ring->num_desc);
183 prq_rds[i].ring_kind = cpu_to_le32(i);
184 prq_rds[i].buff_size = cpu_to_le64(rds_ring->dma_size);
185 }
186
187 prq_sds = (struct qlcnic_hostrq_sds_ring *)(prq->data +
188 le32_to_cpu(prq->sds_ring_offset));
189
190 for (i = 0; i < nsds_rings; i++) {
191
192 sds_ring = &recv_ctx->sds_rings[i];
193
194 prq_sds[i].host_phys_addr = cpu_to_le64(sds_ring->phys_addr);
195 prq_sds[i].ring_size = cpu_to_le32(sds_ring->num_desc);
196 prq_sds[i].msi_index = cpu_to_le16(i);
197 }
198
199 phys_addr = hostrq_phys_addr;
200 err = qlcnic_issue_cmd(adapter,
201 adapter->ahw.pci_func,
202 QLCHAL_VERSION,
203 (u32)(phys_addr >> 32),
204 (u32)(phys_addr & 0xffffffff),
205 rq_size,
206 QLCNIC_CDRP_CMD_CREATE_RX_CTX);
207 if (err) {
208 dev_err(&adapter->pdev->dev,
209 "Failed to create rx ctx in firmware%d\n", err);
210 goto out_free_rsp;
211 }
212
213
214 prsp_rds = ((struct qlcnic_cardrsp_rds_ring *)
215 &prsp->data[le32_to_cpu(prsp->rds_ring_offset)]);
216
217 for (i = 0; i < le16_to_cpu(prsp->num_rds_rings); i++) {
218 rds_ring = &recv_ctx->rds_rings[i];
219
220 reg = le32_to_cpu(prsp_rds[i].host_producer_crb);
221 rds_ring->crb_rcv_producer = qlcnic_get_ioaddr(adapter,
222 QLCNIC_REG(reg - 0x200));
223 }
224
225 prsp_sds = ((struct qlcnic_cardrsp_sds_ring *)
226 &prsp->data[le32_to_cpu(prsp->sds_ring_offset)]);
227
228 for (i = 0; i < le16_to_cpu(prsp->num_sds_rings); i++) {
229 sds_ring = &recv_ctx->sds_rings[i];
230
231 reg = le32_to_cpu(prsp_sds[i].host_consumer_crb);
232 sds_ring->crb_sts_consumer = qlcnic_get_ioaddr(adapter,
233 QLCNIC_REG(reg - 0x200));
234
235 reg = le32_to_cpu(prsp_sds[i].interrupt_crb);
236 sds_ring->crb_intr_mask = qlcnic_get_ioaddr(adapter,
237 QLCNIC_REG(reg - 0x200));
238 }
239
240 recv_ctx->state = le32_to_cpu(prsp->host_ctx_state);
241 recv_ctx->context_id = le16_to_cpu(prsp->context_id);
242 recv_ctx->virt_port = prsp->virt_port;
243
244out_free_rsp:
245 pci_free_consistent(adapter->pdev, rsp_size, prsp, cardrsp_phys_addr);
246out_free_rq:
247 pci_free_consistent(adapter->pdev, rq_size, prq, hostrq_phys_addr);
248 return err;
249}
250
251static void
252qlcnic_fw_cmd_destroy_rx_ctx(struct qlcnic_adapter *adapter)
253{
254 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
255
256 if (qlcnic_issue_cmd(adapter,
257 adapter->ahw.pci_func,
258 QLCHAL_VERSION,
259 recv_ctx->context_id,
260 QLCNIC_DESTROY_CTX_RESET,
261 0,
262 QLCNIC_CDRP_CMD_DESTROY_RX_CTX)) {
263
264 dev_err(&adapter->pdev->dev,
265 "Failed to destroy rx ctx in firmware\n");
266 }
267}
268
269static int
270qlcnic_fw_cmd_create_tx_ctx(struct qlcnic_adapter *adapter)
271{
272 struct qlcnic_hostrq_tx_ctx *prq;
273 struct qlcnic_hostrq_cds_ring *prq_cds;
274 struct qlcnic_cardrsp_tx_ctx *prsp;
275 void *rq_addr, *rsp_addr;
276 size_t rq_size, rsp_size;
277 u32 temp;
278 int err;
279 u64 phys_addr;
280 dma_addr_t rq_phys_addr, rsp_phys_addr;
281 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
282
283 rq_size = SIZEOF_HOSTRQ_TX(struct qlcnic_hostrq_tx_ctx);
284 rq_addr = pci_alloc_consistent(adapter->pdev,
285 rq_size, &rq_phys_addr);
286 if (!rq_addr)
287 return -ENOMEM;
288
289 rsp_size = SIZEOF_CARDRSP_TX(struct qlcnic_cardrsp_tx_ctx);
290 rsp_addr = pci_alloc_consistent(adapter->pdev,
291 rsp_size, &rsp_phys_addr);
292 if (!rsp_addr) {
293 err = -ENOMEM;
294 goto out_free_rq;
295 }
296
297 memset(rq_addr, 0, rq_size);
298 prq = (struct qlcnic_hostrq_tx_ctx *)rq_addr;
299
300 memset(rsp_addr, 0, rsp_size);
301 prsp = (struct qlcnic_cardrsp_tx_ctx *)rsp_addr;
302
303 prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
304
305 temp = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN |
306 QLCNIC_CAP0_LSO);
307 prq->capabilities[0] = cpu_to_le32(temp);
308
309 prq->host_int_crb_mode =
310 cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
311
312 prq->interrupt_ctl = 0;
313 prq->msi_index = 0;
314 prq->cmd_cons_dma_addr = cpu_to_le64(tx_ring->hw_cons_phys_addr);
315
316 prq_cds = &prq->cds_ring;
317
318 prq_cds->host_phys_addr = cpu_to_le64(tx_ring->phys_addr);
319 prq_cds->ring_size = cpu_to_le32(tx_ring->num_desc);
320
321 phys_addr = rq_phys_addr;
322 err = qlcnic_issue_cmd(adapter,
323 adapter->ahw.pci_func,
324 QLCHAL_VERSION,
325 (u32)(phys_addr >> 32),
326 ((u32)phys_addr & 0xffffffff),
327 rq_size,
328 QLCNIC_CDRP_CMD_CREATE_TX_CTX);
329
330 if (err == QLCNIC_RCODE_SUCCESS) {
331 temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);
332 tx_ring->crb_cmd_producer = qlcnic_get_ioaddr(adapter,
333 QLCNIC_REG(temp - 0x200));
334
335 adapter->tx_context_id =
336 le16_to_cpu(prsp->context_id);
337 } else {
338 dev_err(&adapter->pdev->dev,
339 "Failed to create tx ctx in firmware%d\n", err);
340 err = -EIO;
341 }
342
343 pci_free_consistent(adapter->pdev, rsp_size, rsp_addr, rsp_phys_addr);
344
345out_free_rq:
346 pci_free_consistent(adapter->pdev, rq_size, rq_addr, rq_phys_addr);
347
348 return err;
349}
350
351static void
352qlcnic_fw_cmd_destroy_tx_ctx(struct qlcnic_adapter *adapter)
353{
354 if (qlcnic_issue_cmd(adapter,
355 adapter->ahw.pci_func,
356 QLCHAL_VERSION,
357 adapter->tx_context_id,
358 QLCNIC_DESTROY_CTX_RESET,
359 0,
360 QLCNIC_CDRP_CMD_DESTROY_TX_CTX)) {
361
362 dev_err(&adapter->pdev->dev,
363 "Failed to destroy tx ctx in firmware\n");
364 }
365}
366
367int
368qlcnic_fw_cmd_query_phy(struct qlcnic_adapter *adapter, u32 reg, u32 *val)
369{
370
371 if (qlcnic_issue_cmd(adapter,
372 adapter->ahw.pci_func,
373 QLCHAL_VERSION,
374 reg,
375 0,
376 0,
377 QLCNIC_CDRP_CMD_READ_PHY)) {
378
379 return -EIO;
380 }
381
382 return QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
383}
384
385int
386qlcnic_fw_cmd_set_phy(struct qlcnic_adapter *adapter, u32 reg, u32 val)
387{
388 return qlcnic_issue_cmd(adapter,
389 adapter->ahw.pci_func,
390 QLCHAL_VERSION,
391 reg,
392 val,
393 0,
394 QLCNIC_CDRP_CMD_WRITE_PHY);
395}
396
397int qlcnic_alloc_hw_resources(struct qlcnic_adapter *adapter)
398{
399 void *addr;
400 int err;
401 int ring;
402 struct qlcnic_recv_context *recv_ctx;
403 struct qlcnic_host_rds_ring *rds_ring;
404 struct qlcnic_host_sds_ring *sds_ring;
405 struct qlcnic_host_tx_ring *tx_ring;
406
407 struct pci_dev *pdev = adapter->pdev;
408
409 recv_ctx = &adapter->recv_ctx;
410 tx_ring = adapter->tx_ring;
411
412 tx_ring->hw_consumer = (__le32 *)pci_alloc_consistent(pdev, sizeof(u32),
413 &tx_ring->hw_cons_phys_addr);
414 if (tx_ring->hw_consumer == NULL) {
415 dev_err(&pdev->dev, "failed to allocate tx consumer\n");
416 return -ENOMEM;
417 }
418 *(tx_ring->hw_consumer) = 0;
419
420 /* cmd desc ring */
421 addr = pci_alloc_consistent(pdev, TX_DESC_RINGSIZE(tx_ring),
422 &tx_ring->phys_addr);
423
424 if (addr == NULL) {
425 dev_err(&pdev->dev, "failed to allocate tx desc ring\n");
426 return -ENOMEM;
427 }
428
429 tx_ring->desc_head = (struct cmd_desc_type0 *)addr;
430
431 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
432 rds_ring = &recv_ctx->rds_rings[ring];
433 addr = pci_alloc_consistent(adapter->pdev,
434 RCV_DESC_RINGSIZE(rds_ring),
435 &rds_ring->phys_addr);
436 if (addr == NULL) {
437 dev_err(&pdev->dev,
438 "failed to allocate rds ring [%d]\n", ring);
439 err = -ENOMEM;
440 goto err_out_free;
441 }
442 rds_ring->desc_head = (struct rcv_desc *)addr;
443
444 }
445
446 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
447 sds_ring = &recv_ctx->sds_rings[ring];
448
449 addr = pci_alloc_consistent(adapter->pdev,
450 STATUS_DESC_RINGSIZE(sds_ring),
451 &sds_ring->phys_addr);
452 if (addr == NULL) {
453 dev_err(&pdev->dev,
454 "failed to allocate sds ring [%d]\n", ring);
455 err = -ENOMEM;
456 goto err_out_free;
457 }
458 sds_ring->desc_head = (struct status_desc *)addr;
459 }
460
461
462 err = qlcnic_fw_cmd_create_rx_ctx(adapter);
463 if (err)
464 goto err_out_free;
465 err = qlcnic_fw_cmd_create_tx_ctx(adapter);
466 if (err)
467 goto err_out_free;
468
469 set_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
470 return 0;
471
472err_out_free:
473 qlcnic_free_hw_resources(adapter);
474 return err;
475}
476
477void qlcnic_free_hw_resources(struct qlcnic_adapter *adapter)
478{
479 struct qlcnic_recv_context *recv_ctx;
480 struct qlcnic_host_rds_ring *rds_ring;
481 struct qlcnic_host_sds_ring *sds_ring;
482 struct qlcnic_host_tx_ring *tx_ring;
483 int ring;
484
485
486 if (test_and_clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state)) {
487 qlcnic_fw_cmd_destroy_rx_ctx(adapter);
488 qlcnic_fw_cmd_destroy_tx_ctx(adapter);
489
490 /* Allow dma queues to drain after context reset */
491 msleep(20);
492 }
493
494 recv_ctx = &adapter->recv_ctx;
495
496 tx_ring = adapter->tx_ring;
497 if (tx_ring->hw_consumer != NULL) {
498 pci_free_consistent(adapter->pdev,
499 sizeof(u32),
500 tx_ring->hw_consumer,
501 tx_ring->hw_cons_phys_addr);
502 tx_ring->hw_consumer = NULL;
503 }
504
505 if (tx_ring->desc_head != NULL) {
506 pci_free_consistent(adapter->pdev,
507 TX_DESC_RINGSIZE(tx_ring),
508 tx_ring->desc_head, tx_ring->phys_addr);
509 tx_ring->desc_head = NULL;
510 }
511
512 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
513 rds_ring = &recv_ctx->rds_rings[ring];
514
515 if (rds_ring->desc_head != NULL) {
516 pci_free_consistent(adapter->pdev,
517 RCV_DESC_RINGSIZE(rds_ring),
518 rds_ring->desc_head,
519 rds_ring->phys_addr);
520 rds_ring->desc_head = NULL;
521 }
522 }
523
524 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
525 sds_ring = &recv_ctx->sds_rings[ring];
526
527 if (sds_ring->desc_head != NULL) {
528 pci_free_consistent(adapter->pdev,
529 STATUS_DESC_RINGSIZE(sds_ring),
530 sds_ring->desc_head,
531 sds_ring->phys_addr);
532 sds_ring->desc_head = NULL;
533 }
534 }
535}
536
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-31 18:32:53 -0500