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qlcnic: fix race in tx stop queue
[deliverable/linux.git] / drivers / net / qlcnic / qlcnic_init.c
CommitLineData
af19b491
AKS		 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 <linux/netdevice.h>
26#include <linux/delay.h>
5a0e3ad6 27#include <linux/slab.h>
af19b491
AKS		 28#include "qlcnic.h"
29
30struct crb_addr_pair {
31 u32 addr;
32 u32 data;
33};
34
35#define QLCNIC_MAX_CRB_XFORM 60
36static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
37
38#define crb_addr_transform(name) \
39 (crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \
40 QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20)
41
42#define QLCNIC_ADDR_ERROR (0xffffffff)
43
44static void
45qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
46 struct qlcnic_host_rds_ring *rds_ring);
47
48static void crb_addr_transform_setup(void)
49{
50 crb_addr_transform(XDMA);
51 crb_addr_transform(TIMR);
52 crb_addr_transform(SRE);
53 crb_addr_transform(SQN3);
54 crb_addr_transform(SQN2);
55 crb_addr_transform(SQN1);
56 crb_addr_transform(SQN0);
57 crb_addr_transform(SQS3);
58 crb_addr_transform(SQS2);
59 crb_addr_transform(SQS1);
60 crb_addr_transform(SQS0);
61 crb_addr_transform(RPMX7);
62 crb_addr_transform(RPMX6);
63 crb_addr_transform(RPMX5);
64 crb_addr_transform(RPMX4);
65 crb_addr_transform(RPMX3);
66 crb_addr_transform(RPMX2);
67 crb_addr_transform(RPMX1);
68 crb_addr_transform(RPMX0);
69 crb_addr_transform(ROMUSB);
70 crb_addr_transform(SN);
71 crb_addr_transform(QMN);
72 crb_addr_transform(QMS);
73 crb_addr_transform(PGNI);
74 crb_addr_transform(PGND);
75 crb_addr_transform(PGN3);
76 crb_addr_transform(PGN2);
77 crb_addr_transform(PGN1);
78 crb_addr_transform(PGN0);
79 crb_addr_transform(PGSI);
80 crb_addr_transform(PGSD);
81 crb_addr_transform(PGS3);
82 crb_addr_transform(PGS2);
83 crb_addr_transform(PGS1);
84 crb_addr_transform(PGS0);
85 crb_addr_transform(PS);
86 crb_addr_transform(PH);
87 crb_addr_transform(NIU);
88 crb_addr_transform(I2Q);
89 crb_addr_transform(EG);
90 crb_addr_transform(MN);
91 crb_addr_transform(MS);
92 crb_addr_transform(CAS2);
93 crb_addr_transform(CAS1);
94 crb_addr_transform(CAS0);
95 crb_addr_transform(CAM);
96 crb_addr_transform(C2C1);
97 crb_addr_transform(C2C0);
98 crb_addr_transform(SMB);
99 crb_addr_transform(OCM0);
100 crb_addr_transform(I2C0);
101}
102
103void qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter)
104{
105 struct qlcnic_recv_context *recv_ctx;
106 struct qlcnic_host_rds_ring *rds_ring;
107 struct qlcnic_rx_buffer *rx_buf;
108 int i, ring;
109
110 recv_ctx = &adapter->recv_ctx;
111 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
112 rds_ring = &recv_ctx->rds_rings[ring];
113 for (i = 0; i < rds_ring->num_desc; ++i) {
114 rx_buf = &(rds_ring->rx_buf_arr[i]);
115 if (rx_buf->state == QLCNIC_BUFFER_FREE)
116 continue;
117 pci_unmap_single(adapter->pdev,
118 rx_buf->dma,
119 rds_ring->dma_size,
120 PCI_DMA_FROMDEVICE);
121 if (rx_buf->skb != NULL)
122 dev_kfree_skb_any(rx_buf->skb);
123 }
124 }
125}
126
127void qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter)
128{
129 struct qlcnic_cmd_buffer *cmd_buf;
130 struct qlcnic_skb_frag *buffrag;
131 int i, j;
132 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
133
134 cmd_buf = tx_ring->cmd_buf_arr;
135 for (i = 0; i < tx_ring->num_desc; i++) {
136 buffrag = cmd_buf->frag_array;
137 if (buffrag->dma) {
138 pci_unmap_single(adapter->pdev, buffrag->dma,
139 buffrag->length, PCI_DMA_TODEVICE);
140 buffrag->dma = 0ULL;
141 }
142 for (j = 0; j < cmd_buf->frag_count; j++) {
143 buffrag++;
144 if (buffrag->dma) {
145 pci_unmap_page(adapter->pdev, buffrag->dma,
146 buffrag->length,
147 PCI_DMA_TODEVICE);
148 buffrag->dma = 0ULL;
149 }
150 }
151 if (cmd_buf->skb) {
152 dev_kfree_skb_any(cmd_buf->skb);
153 cmd_buf->skb = NULL;
154 }
155 cmd_buf++;
156 }
157}
158
159void qlcnic_free_sw_resources(struct qlcnic_adapter *adapter)
160{
161 struct qlcnic_recv_context *recv_ctx;
162 struct qlcnic_host_rds_ring *rds_ring;
163 struct qlcnic_host_tx_ring *tx_ring;
164 int ring;
165
166 recv_ctx = &adapter->recv_ctx;
167
168 if (recv_ctx->rds_rings == NULL)
169 goto skip_rds;
170
171 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
172 rds_ring = &recv_ctx->rds_rings[ring];
173 vfree(rds_ring->rx_buf_arr);
174 rds_ring->rx_buf_arr = NULL;
175 }
176 kfree(recv_ctx->rds_rings);
177
178skip_rds:
179 if (adapter->tx_ring == NULL)
180 return;
181
182 tx_ring = adapter->tx_ring;
183 vfree(tx_ring->cmd_buf_arr);
ef71ff83 184 tx_ring->cmd_buf_arr = NULL;
af19b491 185 kfree(adapter->tx_ring);
ef71ff83 186 adapter->tx_ring = NULL;
af19b491
AKS		 187}
188
189int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter)
190{
191 struct qlcnic_recv_context *recv_ctx;
192 struct qlcnic_host_rds_ring *rds_ring;
193 struct qlcnic_host_sds_ring *sds_ring;
194 struct qlcnic_host_tx_ring *tx_ring;
195 struct qlcnic_rx_buffer *rx_buf;
196 int ring, i, size;
197
198 struct qlcnic_cmd_buffer *cmd_buf_arr;
199 struct net_device *netdev = adapter->netdev;
200
201 size = sizeof(struct qlcnic_host_tx_ring);
202 tx_ring = kzalloc(size, GFP_KERNEL);
203 if (tx_ring == NULL) {
204 dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
205 return -ENOMEM;
206 }
207 adapter->tx_ring = tx_ring;
208
209 tx_ring->num_desc = adapter->num_txd;
210 tx_ring->txq = netdev_get_tx_queue(netdev, 0);
211
212 cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
213 if (cmd_buf_arr == NULL) {
214 dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
aadd8184 215 goto err_out;
af19b491
AKS		 216 }
217 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
218 tx_ring->cmd_buf_arr = cmd_buf_arr;
219
220 recv_ctx = &adapter->recv_ctx;
221
222 size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring);
223 rds_ring = kzalloc(size, GFP_KERNEL);
224 if (rds_ring == NULL) {
225 dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
aadd8184 226 goto err_out;
af19b491
AKS		 227 }
228 recv_ctx->rds_rings = rds_ring;
229
230 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
231 rds_ring = &recv_ctx->rds_rings[ring];
232 switch (ring) {
233 case RCV_RING_NORMAL:
234 rds_ring->num_desc = adapter->num_rxd;
251a84c9
AKS		 235 rds_ring->dma_size = QLCNIC_P3_RX_BUF_MAX_LEN;
236 rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
af19b491
AKS		 237 break;
238
239 case RCV_RING_JUMBO:
240 rds_ring->num_desc = adapter->num_jumbo_rxd;
241 rds_ring->dma_size =
242 QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN;
243
244 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
245 rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
246
247 rds_ring->skb_size =
248 rds_ring->dma_size + NET_IP_ALIGN;
249 break;
af19b491
AKS		 250 }
251 rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
252 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
253 if (rds_ring->rx_buf_arr == NULL) {
254 dev_err(&netdev->dev, "Failed to allocate "
255 "rx buffer ring %d\n", ring);
256 goto err_out;
257 }
258 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
259 INIT_LIST_HEAD(&rds_ring->free_list);
260 /*
261 * Now go through all of them, set reference handles
262 * and put them in the queues.
263 */
264 rx_buf = rds_ring->rx_buf_arr;
265 for (i = 0; i < rds_ring->num_desc; i++) {
266 list_add_tail(&rx_buf->list,
267 &rds_ring->free_list);
268 rx_buf->ref_handle = i;
269 rx_buf->state = QLCNIC_BUFFER_FREE;
270 rx_buf++;
271 }
272 spin_lock_init(&rds_ring->lock);
273 }
274
275 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
276 sds_ring = &recv_ctx->sds_rings[ring];
277 sds_ring->irq = adapter->msix_entries[ring].vector;
278 sds_ring->adapter = adapter;
279 sds_ring->num_desc = adapter->num_rxd;
280
281 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
282 INIT_LIST_HEAD(&sds_ring->free_list[i]);
283 }
284
285 return 0;
286
287err_out:
288 qlcnic_free_sw_resources(adapter);
289 return -ENOMEM;
290}
291
292/*
293 * Utility to translate from internal Phantom CRB address
294 * to external PCI CRB address.
295 */
296static u32 qlcnic_decode_crb_addr(u32 addr)
297{
298 int i;
299 u32 base_addr, offset, pci_base;
300
301 crb_addr_transform_setup();
302
303 pci_base = QLCNIC_ADDR_ERROR;
304 base_addr = addr & 0xfff00000;
305 offset = addr & 0x000fffff;
306
307 for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
308 if (crb_addr_xform[i] == base_addr) {
309 pci_base = i << 20;
310 break;
311 }
312 }
313 if (pci_base == QLCNIC_ADDR_ERROR)
314 return pci_base;
315 else
316 return pci_base + offset;
317}
318
319#define QLCNIC_MAX_ROM_WAIT_USEC 100
320
321static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
322{
323 long timeout = 0;
324 long done = 0;
325
326 cond_resched();
327
328 while (done == 0) {
329 done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
330 done &= 2;
331 if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
332 dev_err(&adapter->pdev->dev,
333 "Timeout reached waiting for rom done");
334 return -EIO;
335 }
336 udelay(1);
337 }
338 return 0;
339}
340
341static int do_rom_fast_read(struct qlcnic_adapter *adapter,
342 int addr, int *valp)
343{
344 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
345 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
346 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
347 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
348 if (qlcnic_wait_rom_done(adapter)) {
349 dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
350 return -EIO;
351 }
352 /* reset abyte_cnt and dummy_byte_cnt */
353 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
354 udelay(10);
355 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
356
357 *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
358 return 0;
359}
360
361static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
362 u8 *bytes, size_t size)
363{
364 int addridx;
365 int ret = 0;
366
367 for (addridx = addr; addridx < (addr + size); addridx += 4) {
368 int v;
369 ret = do_rom_fast_read(adapter, addridx, &v);
370 if (ret != 0)
371 break;
372 *(__le32 *)bytes = cpu_to_le32(v);
373 bytes += 4;
374 }
375
376 return ret;
377}
378
379int
380qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
381 u8 *bytes, size_t size)
382{
383 int ret;
384
385 ret = qlcnic_rom_lock(adapter);
386 if (ret < 0)
387 return ret;
388
389 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
390
391 qlcnic_rom_unlock(adapter);
392 return ret;
393}
394
395int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp)
396{
397 int ret;
398
399 if (qlcnic_rom_lock(adapter) != 0)
400 return -EIO;
401
402 ret = do_rom_fast_read(adapter, addr, valp);
403 qlcnic_rom_unlock(adapter);
404 return ret;
405}
406
407int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
408{
409 int addr, val;
410 int i, n, init_delay;
411 struct crb_addr_pair *buf;
412 unsigned offset;
413 u32 off;
414 struct pci_dev *pdev = adapter->pdev;
415
416 /* resetall */
417 qlcnic_rom_lock(adapter);
469c221f 418 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xfeffffff);
af19b491
AKS		 419 qlcnic_rom_unlock(adapter);
420
421 if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
422 qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
423 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
424 return -EIO;
425 }
426 offset = n & 0xffffU;
427 n = (n >> 16) & 0xffffU;
428
429 if (n >= 1024) {
430 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
431 return -EIO;
432 }
433
434 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
435 if (buf == NULL) {
436 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
437 return -ENOMEM;
438 }
439
440 for (i = 0; i < n; i++) {
441 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
442 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
443 kfree(buf);
444 return -EIO;
445 }
446
447 buf[i].addr = addr;
448 buf[i].data = val;
449 }
450
451 for (i = 0; i < n; i++) {
452
453 off = qlcnic_decode_crb_addr(buf[i].addr);
454 if (off == QLCNIC_ADDR_ERROR) {
455 dev_err(&pdev->dev, "CRB init value out of range %x\n",
456 buf[i].addr);
457 continue;
458 }
459 off += QLCNIC_PCI_CRBSPACE;
460
461 if (off & 1)
462 continue;
463
464 /* skipping cold reboot MAGIC */
465 if (off == QLCNIC_CAM_RAM(0x1fc))
466 continue;
467 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
468 continue;
469 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
470 continue;
471 if (off == (ROMUSB_GLB + 0xa8))
472 continue;
473 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
474 continue;
475 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
476 continue;
477 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
478 continue;
479 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
480 continue;
481 /* skip the function enable register */
482 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
483 continue;
484 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
485 continue;
486 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
487 continue;
488
489 init_delay = 1;
490 /* After writing this register, HW needs time for CRB */
491 /* to quiet down (else crb_window returns 0xffffffff) */
492 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
493 init_delay = 1000;
494
495 QLCWR32(adapter, off, buf[i].data);
496
497 msleep(init_delay);
498 }
499 kfree(buf);
500
501 /* p2dn replyCount */
502 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
503 /* disable_peg_cache 0 & 1*/
504 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
505 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
506
507 /* peg_clr_all */
508 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
509 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
510 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
511 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
512 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
513 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
514 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
515 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
516 return 0;
517}
518
b3a24649 519int
aa5e18c0
SC		 520qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
521
522 int timeo;
b3a24649
SC		 523 u32 val;
524
2e9d722d
AC		 525 if (adapter->fw_hal_version == QLCNIC_FW_BASE) {
526 val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO);
527 val = QLC_DEV_GET_DRV(val, adapter->portnum);
528 if ((val & 0x3) != QLCNIC_TYPE_NIC) {
529 dev_err(&adapter->pdev->dev,
530 "Not an Ethernet NIC func=%u\n", val);
531 return -EIO;
532 }
533 adapter->physical_port = (val >> 2);
b3a24649 534 }
aa5e18c0
SC		 535 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
536 timeo = 30;
537
538 adapter->dev_init_timeo = timeo;
539
540 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
541 timeo = 10;
542
543 adapter->reset_ack_timeo = timeo;
b3a24649
SC		 544
545 return 0;
aa5e18c0
SC		 546}
547
8f891387 548int
549qlcnic_check_flash_fw_ver(struct qlcnic_adapter *adapter)
550{
551 u32 ver = -1, min_ver;
552
553 qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET, (int *)&ver);
554
555 ver = QLCNIC_DECODE_VERSION(ver);
556 min_ver = QLCNIC_MIN_FW_VERSION;
557
558 if (ver < min_ver) {
559 dev_err(&adapter->pdev->dev,
560 "firmware version %d.%d.%d unsupported."
561 "Min supported version %d.%d.%d\n",
562 _major(ver), _minor(ver), _build(ver),
563 _major(min_ver), _minor(min_ver), _build(min_ver));
564 return -EINVAL;
565 }
566
567 return 0;
568}
569
af19b491
AKS		 570static int
571qlcnic_has_mn(struct qlcnic_adapter *adapter)
572{
8f891387 573 u32 capability;
af19b491
AKS		 574 capability = 0;
575
251a84c9
AKS		 576 capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
577 if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
578 return 1;
af19b491 579
af19b491
AKS		 580 return 0;
581}
582
583static
584struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
585{
586 u32 i;
587 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
588 __le32 entries = cpu_to_le32(directory->num_entries);
589
590 for (i = 0; i < entries; i++) {
591
592 __le32 offs = cpu_to_le32(directory->findex) +
593 (i * cpu_to_le32(directory->entry_size));
594 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
595
596 if (tab_type == section)
597 return (struct uni_table_desc *) &unirom[offs];
598 }
599
600 return NULL;
601}
602
b7eff100
SC		 603#define FILEHEADER_SIZE (14 * 4)
604
af19b491 605static int
b7eff100 606qlcnic_validate_header(struct qlcnic_adapter *adapter)
af19b491 607{
af19b491 608 const u8 *unirom = adapter->fw->data;
b7eff100
SC		 609 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
610 __le32 fw_file_size = adapter->fw->size;
af19b491 611 __le32 entries;
b7eff100
SC		 612 __le32 entry_size;
613 __le32 tab_size;
614
615 if (fw_file_size < FILEHEADER_SIZE)
616 return -EINVAL;
617
618 entries = cpu_to_le32(directory->num_entries);
619 entry_size = cpu_to_le32(directory->entry_size);
620 tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
621
622 if (fw_file_size < tab_size)
623 return -EINVAL;
624
625 return 0;
626}
627
628static int
629qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
630{
631 struct uni_table_desc *tab_desc;
632 struct uni_data_desc *descr;
633 const u8 *unirom = adapter->fw->data;
634 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
635 QLCNIC_UNI_BOOTLD_IDX_OFF));
636 __le32 offs;
637 __le32 tab_size;
638 __le32 data_size;
639
640 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
641
642 if (!tab_desc)
643 return -EINVAL;
644
645 tab_size = cpu_to_le32(tab_desc->findex) +
22dfaa86 646 (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
b7eff100
SC		 647
648 if (adapter->fw->size < tab_size)
649 return -EINVAL;
650
651 offs = cpu_to_le32(tab_desc->findex) +
652 (cpu_to_le32(tab_desc->entry_size) * (idx));
653 descr = (struct uni_data_desc *)&unirom[offs];
654
22dfaa86 655 data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
b7eff100
SC		 656
657 if (adapter->fw->size < data_size)
658 return -EINVAL;
659
660 return 0;
661}
662
663static int
664qlcnic_validate_fw(struct qlcnic_adapter *adapter)
665{
666 struct uni_table_desc *tab_desc;
667 struct uni_data_desc *descr;
668 const u8 *unirom = adapter->fw->data;
669 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
670 QLCNIC_UNI_FIRMWARE_IDX_OFF));
671 __le32 offs;
672 __le32 tab_size;
673 __le32 data_size;
674
675 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
676
677 if (!tab_desc)
678 return -EINVAL;
679
680 tab_size = cpu_to_le32(tab_desc->findex) +
22dfaa86 681 (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
b7eff100
SC		 682
683 if (adapter->fw->size < tab_size)
684 return -EINVAL;
685
686 offs = cpu_to_le32(tab_desc->findex) +
687 (cpu_to_le32(tab_desc->entry_size) * (idx));
688 descr = (struct uni_data_desc *)&unirom[offs];
22dfaa86 689 data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
b7eff100
SC		 690
691 if (adapter->fw->size < data_size)
692 return -EINVAL;
693
694 return 0;
695}
696
697static int
698qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
699{
700 struct uni_table_desc *ptab_descr;
701 const u8 *unirom = adapter->fw->data;
af19b491 702 int mn_present = qlcnic_has_mn(adapter);
b7eff100
SC		 703 __le32 entries;
704 __le32 entry_size;
705 __le32 tab_size;
706 u32 i;
af19b491
AKS		 707
708 ptab_descr = qlcnic_get_table_desc(unirom,
709 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
b7eff100
SC		 710 if (!ptab_descr)
711 return -EINVAL;
af19b491
AKS		 712
713 entries = cpu_to_le32(ptab_descr->num_entries);
b7eff100
SC		 714 entry_size = cpu_to_le32(ptab_descr->entry_size);
715 tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
716
717 if (adapter->fw->size < tab_size)
718 return -EINVAL;
719
af19b491
AKS		 720nomn:
721 for (i = 0; i < entries; i++) {
722
723 __le32 flags, file_chiprev, offs;
724 u8 chiprev = adapter->ahw.revision_id;
725 u32 flagbit;
726
727 offs = cpu_to_le32(ptab_descr->findex) +
728 (i * cpu_to_le32(ptab_descr->entry_size));
729 flags = cpu_to_le32(*((int *)&unirom[offs] +
730 QLCNIC_UNI_FLAGS_OFF));
731 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
732 QLCNIC_UNI_CHIP_REV_OFF));
733
734 flagbit = mn_present ? 1 : 2;
735
736 if ((chiprev == file_chiprev) &&
737 ((1ULL << flagbit) & flags)) {
738 adapter->file_prd_off = offs;
739 return 0;
740 }
741 }
742 if (mn_present) {
743 mn_present = 0;
744 goto nomn;
745 }
b7eff100
SC		 746 return -EINVAL;
747}
748
749static int
750qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
751{
752 if (qlcnic_validate_header(adapter)) {
753 dev_err(&adapter->pdev->dev,
754 "unified image: header validation failed\n");
755 return -EINVAL;
756 }
757
758 if (qlcnic_validate_product_offs(adapter)) {
759 dev_err(&adapter->pdev->dev,
760 "unified image: product validation failed\n");
761 return -EINVAL;
762 }
763
764 if (qlcnic_validate_bootld(adapter)) {
765 dev_err(&adapter->pdev->dev,
766 "unified image: bootld validation failed\n");
767 return -EINVAL;
768 }
769
770 if (qlcnic_validate_fw(adapter)) {
771 dev_err(&adapter->pdev->dev,
772 "unified image: firmware validation failed\n");
773 return -EINVAL;
774 }
775
776 return 0;
af19b491
AKS		 777}
778
779static
780struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
781 u32 section, u32 idx_offset)
782{
783 const u8 *unirom = adapter->fw->data;
784 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
785 idx_offset));
786 struct uni_table_desc *tab_desc;
787 __le32 offs;
788
789 tab_desc = qlcnic_get_table_desc(unirom, section);
790
791 if (tab_desc == NULL)
792 return NULL;
793
794 offs = cpu_to_le32(tab_desc->findex) +
795 (cpu_to_le32(tab_desc->entry_size) * idx);
796
797 return (struct uni_data_desc *)&unirom[offs];
798}
799
800static u8 *
801qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
802{
803 u32 offs = QLCNIC_BOOTLD_START;
804
805 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
806 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
807 QLCNIC_UNI_DIR_SECT_BOOTLD,
808 QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
809
810 return (u8 *)&adapter->fw->data[offs];
811}
812
813static u8 *
814qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
815{
816 u32 offs = QLCNIC_IMAGE_START;
817
818 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
819 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
820 QLCNIC_UNI_DIR_SECT_FW,
821 QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
822
823 return (u8 *)&adapter->fw->data[offs];
824}
825
826static __le32
827qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
828{
829 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
830 return cpu_to_le32((qlcnic_get_data_desc(adapter,
831 QLCNIC_UNI_DIR_SECT_FW,
832 QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
833 else
834 return cpu_to_le32(
835 *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
836}
837
838static __le32
839qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
840{
841 struct uni_data_desc *fw_data_desc;
842 const struct firmware *fw = adapter->fw;
843 __le32 major, minor, sub;
844 const u8 *ver_str;
845 int i, ret;
846
847 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
848 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
849
850 fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
851 QLCNIC_UNI_FIRMWARE_IDX_OFF);
852 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
853 cpu_to_le32(fw_data_desc->size) - 17;
854
855 for (i = 0; i < 12; i++) {
856 if (!strncmp(&ver_str[i], "REV=", 4)) {
857 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
858 &major, &minor, &sub);
859 if (ret != 3)
860 return 0;
861 else
862 return major + (minor << 8) + (sub << 16);
863 }
864 }
865
866 return 0;
867}
868
869static __le32
870qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
871{
872 const struct firmware *fw = adapter->fw;
873 __le32 bios_ver, prd_off = adapter->file_prd_off;
874
875 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
876 return cpu_to_le32(
877 *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
878
879 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
880 + QLCNIC_UNI_BIOS_VERSION_OFF));
881
addd5abf 882 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
af19b491
AKS		 883}
884
885int
886qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
887{
888 u32 count, old_count;
889 u32 val, version, major, minor, build;
890 int i, timeout;
891
892 if (adapter->need_fw_reset)
893 return 1;
894
895 /* last attempt had failed */
896 if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
897 return 1;
898
899 old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
900
901 for (i = 0; i < 10; i++) {
902
903 timeout = msleep_interruptible(200);
904 if (timeout) {
905 QLCWR32(adapter, CRB_CMDPEG_STATE,
906 PHAN_INITIALIZE_FAILED);
907 return -EINTR;
908 }
909
910 count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
911 if (count != old_count)
912 break;
913 }
914
915 /* firmware is dead */
916 if (count == old_count)
917 return 1;
918
919 /* check if we have got newer or different file firmware */
920 if (adapter->fw) {
921
922 val = qlcnic_get_fw_version(adapter);
923
924 version = QLCNIC_DECODE_VERSION(val);
925
926 major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
927 minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
928 build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
929
930 if (version > QLCNIC_VERSION_CODE(major, minor, build))
931 return 1;
932 }
933
934 return 0;
935}
936
937static const char *fw_name[] = {
938 QLCNIC_UNIFIED_ROMIMAGE_NAME,
939 QLCNIC_FLASH_ROMIMAGE_NAME,
940};
941
942int
943qlcnic_load_firmware(struct qlcnic_adapter *adapter)
944{
945 u64 *ptr64;
946 u32 i, flashaddr, size;
947 const struct firmware *fw = adapter->fw;
948 struct pci_dev *pdev = adapter->pdev;
949
950 dev_info(&pdev->dev, "loading firmware from %s\n",
951 fw_name[adapter->fw_type]);
952
953 if (fw) {
954 __le64 data;
955
956 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
957
958 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
959 flashaddr = QLCNIC_BOOTLD_START;
960
961 for (i = 0; i < size; i++) {
962 data = cpu_to_le64(ptr64[i]);
963
964 if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
965 return -EIO;
966
967 flashaddr += 8;
968 }
969
970 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
971
972 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
973 flashaddr = QLCNIC_IMAGE_START;
974
975 for (i = 0; i < size; i++) {
976 data = cpu_to_le64(ptr64[i]);
977
978 if (qlcnic_pci_mem_write_2M(adapter,
979 flashaddr, data))
980 return -EIO;
981
982 flashaddr += 8;
983 }
0bc92b5b
AKS		 984
985 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
986 if (size) {
987 data = cpu_to_le64(ptr64[i]);
988
989 if (qlcnic_pci_mem_write_2M(adapter,
990 flashaddr, data))
991 return -EIO;
992 }
993
af19b491
AKS		 994 } else {
995 u64 data;
996 u32 hi, lo;
997
998 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
999 flashaddr = QLCNIC_BOOTLD_START;
1000
1001 for (i = 0; i < size; i++) {
1002 if (qlcnic_rom_fast_read(adapter,
1003 flashaddr, (int *)&lo) != 0)
1004 return -EIO;
1005 if (qlcnic_rom_fast_read(adapter,
1006 flashaddr + 4, (int *)&hi) != 0)
1007 return -EIO;
1008
1009 data = (((u64)hi << 32) | lo);
1010
1011 if (qlcnic_pci_mem_write_2M(adapter,
1012 flashaddr, data))
1013 return -EIO;
1014
1015 flashaddr += 8;
1016 }
1017 }
1018 msleep(1);
1019
1020 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
1021 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
1022 return 0;
1023}
1024
1025static int
1026qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
1027{
1028 __le32 val;
8f891387 1029 u32 ver, bios, min_size;
af19b491
AKS		 1030 struct pci_dev *pdev = adapter->pdev;
1031 const struct firmware *fw = adapter->fw;
1032 u8 fw_type = adapter->fw_type;
1033
1034 if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
b7eff100 1035 if (qlcnic_validate_unified_romimage(adapter))
af19b491
AKS		 1036 return -EINVAL;
1037
1038 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1039 } else {
1040 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1041 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1042 return -EINVAL;
1043
1044 min_size = QLCNIC_FW_MIN_SIZE;
1045 }
1046
1047 if (fw->size < min_size)
1048 return -EINVAL;
1049
1050 val = qlcnic_get_fw_version(adapter);
af19b491
AKS		 1051 ver = QLCNIC_DECODE_VERSION(val);
1052
8f891387 1053 if (ver < QLCNIC_MIN_FW_VERSION) {
af19b491
AKS		 1054 dev_err(&pdev->dev,
1055 "%s: firmware version %d.%d.%d unsupported\n",
1056 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1057 return -EINVAL;
1058 }
1059
1060 val = qlcnic_get_bios_version(adapter);
1061 qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1062 if ((__force u32)val != bios) {
1063 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1064 fw_name[fw_type]);
1065 return -EINVAL;
1066 }
1067
1068 /* check if flashed firmware is newer */
1069 if (qlcnic_rom_fast_read(adapter,
1070 QLCNIC_FW_VERSION_OFFSET, (int *)&val))
1071 return -EIO;
1072
1073 val = QLCNIC_DECODE_VERSION(val);
1074 if (val > ver) {
1075 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1076 fw_name[fw_type]);
1077 return -EINVAL;
1078 }
1079
1080 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1081 return 0;
1082}
1083
1084static void
1085qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1086{
1087 u8 fw_type;
1088
1089 switch (adapter->fw_type) {
1090 case QLCNIC_UNKNOWN_ROMIMAGE:
1091 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1092 break;
1093
1094 case QLCNIC_UNIFIED_ROMIMAGE:
1095 default:
1096 fw_type = QLCNIC_FLASH_ROMIMAGE;
1097 break;
1098 }
1099
1100 adapter->fw_type = fw_type;
1101}
1102
1103
1104
1105void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1106{
1107 struct pci_dev *pdev = adapter->pdev;
1108 int rc;
1109
1110 adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1111
1112next:
1113 qlcnic_get_next_fwtype(adapter);
1114
1115 if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1116 adapter->fw = NULL;
1117 } else {
1118 rc = request_firmware(&adapter->fw,
1119 fw_name[adapter->fw_type], &pdev->dev);
1120 if (rc != 0)
1121 goto next;
1122
1123 rc = qlcnic_validate_firmware(adapter);
1124 if (rc != 0) {
1125 release_firmware(adapter->fw);
1126 msleep(1);
1127 goto next;
1128 }
1129 }
1130}
1131
1132
1133void
1134qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1135{
1136 if (adapter->fw)
1137 release_firmware(adapter->fw);
1138 adapter->fw = NULL;
1139}
1140
1141int qlcnic_phantom_init(struct qlcnic_adapter *adapter)
1142{
1143 u32 val;
1144 int retries = 60;
1145
1146 do {
1147 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
1148
1149 switch (val) {
1150 case PHAN_INITIALIZE_COMPLETE:
1151 case PHAN_INITIALIZE_ACK:
1152 return 0;
1153 case PHAN_INITIALIZE_FAILED:
1154 goto out_err;
1155 default:
1156 break;
1157 }
1158
1159 msleep(500);
1160
1161 } while (--retries);
1162
1163 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1164
1165out_err:
1166 dev_err(&adapter->pdev->dev, "firmware init failed\n");
1167 return -EIO;
1168}
1169
1170static int
1171qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
1172{
1173 u32 val;
1174 int retries = 2000;
1175
1176 do {
1177 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
1178
1179 if (val == PHAN_PEG_RCV_INITIALIZED)
1180 return 0;
1181
1182 msleep(10);
1183
1184 } while (--retries);
1185
1186 if (!retries) {
1187 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
1188 "complete, state: 0x%x.\n", val);
1189 return -EIO;
1190 }
1191
1192 return 0;
1193}
1194
1195int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
1196{
1197 int err;
1198
1199 err = qlcnic_receive_peg_ready(adapter);
1200 if (err)
1201 return err;
1202
af19b491
AKS		 1203 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1204
1205 return err;
1206}
1207
1208static void
1209qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1210 struct qlcnic_fw_msg *msg)
1211{
1212 u32 cable_OUI;
1213 u16 cable_len;
1214 u16 link_speed;
1215 u8 link_status, module, duplex, autoneg;
1216 struct net_device *netdev = adapter->netdev;
1217
1218 adapter->has_link_events = 1;
1219
1220 cable_OUI = msg->body[1] & 0xffffffff;
1221 cable_len = (msg->body[1] >> 32) & 0xffff;
1222 link_speed = (msg->body[1] >> 48) & 0xffff;
1223
1224 link_status = msg->body[2] & 0xff;
1225 duplex = (msg->body[2] >> 16) & 0xff;
1226 autoneg = (msg->body[2] >> 24) & 0xff;
1227
1228 module = (msg->body[2] >> 8) & 0xff;
1229 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1230 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1231 "length %d\n", cable_OUI, cable_len);
1232 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1233 dev_info(&netdev->dev, "unsupported cable length %d\n",
1234 cable_len);
1235
1236 qlcnic_advert_link_change(adapter, link_status);
1237
1238 if (duplex == LINKEVENT_FULL_DUPLEX)
1239 adapter->link_duplex = DUPLEX_FULL;
1240 else
1241 adapter->link_duplex = DUPLEX_HALF;
1242
1243 adapter->module_type = module;
1244 adapter->link_autoneg = autoneg;
1245 adapter->link_speed = link_speed;
1246}
1247
1248static void
1249qlcnic_handle_fw_message(int desc_cnt, int index,
1250 struct qlcnic_host_sds_ring *sds_ring)
1251{
1252 struct qlcnic_fw_msg msg;
1253 struct status_desc *desc;
1254 int i = 0, opcode;
1255
1256 while (desc_cnt > 0 && i < 8) {
1257 desc = &sds_ring->desc_head[index];
1258 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1259 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1260
1261 index = get_next_index(index, sds_ring->num_desc);
1262 desc_cnt--;
1263 }
1264
1265 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1266 switch (opcode) {
1267 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1268 qlcnic_handle_linkevent(sds_ring->adapter, &msg);
1269 break;
1270 default:
1271 break;
1272 }
1273}
1274
1275static int
1276qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1277 struct qlcnic_host_rds_ring *rds_ring,
1278 struct qlcnic_rx_buffer *buffer)
1279{
1280 struct sk_buff *skb;
1281 dma_addr_t dma;
1282 struct pci_dev *pdev = adapter->pdev;
1283
1284 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
8bfe8b91
SC		 1285 if (!buffer->skb) {
1286 adapter->stats.skb_alloc_failure++;
af19b491 1287 return -ENOMEM;
8bfe8b91 1288 }
af19b491
AKS		 1289
1290 skb = buffer->skb;
1291
251a84c9 1292 skb_reserve(skb, 2);
af19b491
AKS		 1293
1294 dma = pci_map_single(pdev, skb->data,
1295 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1296
1297 if (pci_dma_mapping_error(pdev, dma)) {
8ae6df97 1298 adapter->stats.rx_dma_map_error++;
af19b491
AKS		 1299 dev_kfree_skb_any(skb);
1300 buffer->skb = NULL;
1301 return -ENOMEM;
1302 }
1303
1304 buffer->skb = skb;
1305 buffer->dma = dma;
1306 buffer->state = QLCNIC_BUFFER_BUSY;
1307
1308 return 0;
1309}
1310
1311static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1312 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1313{
1314 struct qlcnic_rx_buffer *buffer;
1315 struct sk_buff *skb;
1316
1317 buffer = &rds_ring->rx_buf_arr[index];
1318
1319 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1320 PCI_DMA_FROMDEVICE);
1321
1322 skb = buffer->skb;
8ae6df97
AKS		 1323 if (!skb) {
1324 adapter->stats.null_skb++;
af19b491 1325 goto no_skb;
8ae6df97 1326 }
af19b491
AKS		 1327
1328 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1329 adapter->stats.csummed++;
1330 skb->ip_summed = CHECKSUM_UNNECESSARY;
1331 } else {
1332 skb->ip_summed = CHECKSUM_NONE;
1333 }
1334
1335 skb->dev = adapter->netdev;
1336
1337 buffer->skb = NULL;
1338no_skb:
1339 buffer->state = QLCNIC_BUFFER_FREE;
1340 return skb;
1341}
1342
1343static struct qlcnic_rx_buffer *
1344qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1345 struct qlcnic_host_sds_ring *sds_ring,
1346 int ring, u64 sts_data0)
1347{
1348 struct net_device *netdev = adapter->netdev;
1349 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1350 struct qlcnic_rx_buffer *buffer;
1351 struct sk_buff *skb;
1352 struct qlcnic_host_rds_ring *rds_ring;
1353 int index, length, cksum, pkt_offset;
1354
1355 if (unlikely(ring >= adapter->max_rds_rings))
1356 return NULL;
1357
1358 rds_ring = &recv_ctx->rds_rings[ring];
1359
1360 index = qlcnic_get_sts_refhandle(sts_data0);
1361 if (unlikely(index >= rds_ring->num_desc))
1362 return NULL;
1363
1364 buffer = &rds_ring->rx_buf_arr[index];
1365
1366 length = qlcnic_get_sts_totallength(sts_data0);
1367 cksum = qlcnic_get_sts_status(sts_data0);
1368 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1369
1370 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1371 if (!skb)
1372 return buffer;
1373
1374 if (length > rds_ring->skb_size)
1375 skb_put(skb, rds_ring->skb_size);
1376 else
1377 skb_put(skb, length);
1378
1379 if (pkt_offset)
1380 skb_pull(skb, pkt_offset);
1381
1382 skb->truesize = skb->len + sizeof(struct sk_buff);
1383 skb->protocol = eth_type_trans(skb, netdev);
1384
1385 napi_gro_receive(&sds_ring->napi, skb);
1386
1387 adapter->stats.rx_pkts++;
1388 adapter->stats.rxbytes += length;
1389
1390 return buffer;
1391}
1392
1393#define QLC_TCP_HDR_SIZE 20
1394#define QLC_TCP_TS_OPTION_SIZE 12
1395#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1396
1397static struct qlcnic_rx_buffer *
1398qlcnic_process_lro(struct qlcnic_adapter *adapter,
1399 struct qlcnic_host_sds_ring *sds_ring,
1400 int ring, u64 sts_data0, u64 sts_data1)
1401{
1402 struct net_device *netdev = adapter->netdev;
1403 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1404 struct qlcnic_rx_buffer *buffer;
1405 struct sk_buff *skb;
1406 struct qlcnic_host_rds_ring *rds_ring;
1407 struct iphdr *iph;
1408 struct tcphdr *th;
1409 bool push, timestamp;
1410 int l2_hdr_offset, l4_hdr_offset;
1411 int index;
1412 u16 lro_length, length, data_offset;
1413 u32 seq_number;
1414
1415 if (unlikely(ring > adapter->max_rds_rings))
1416 return NULL;
1417
1418 rds_ring = &recv_ctx->rds_rings[ring];
1419
1420 index = qlcnic_get_lro_sts_refhandle(sts_data0);
1421 if (unlikely(index > rds_ring->num_desc))
1422 return NULL;
1423
1424 buffer = &rds_ring->rx_buf_arr[index];
1425
1426 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1427 lro_length = qlcnic_get_lro_sts_length(sts_data0);
1428 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1429 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1430 push = qlcnic_get_lro_sts_push_flag(sts_data0);
1431 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1432
1433 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1434 if (!skb)
1435 return buffer;
1436
1437 if (timestamp)
1438 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1439 else
1440 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1441
1442 skb_put(skb, lro_length + data_offset);
1443
1444 skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1445
1446 skb_pull(skb, l2_hdr_offset);
1447 skb->protocol = eth_type_trans(skb, netdev);
1448
1449 iph = (struct iphdr *)skb->data;
1450 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1451
1452 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1453 iph->tot_len = htons(length);
1454 iph->check = 0;
1455 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1456 th->psh = push;
1457 th->seq = htonl(seq_number);
1458
1459 length = skb->len;
1460
1461 netif_receive_skb(skb);
1462
1463 adapter->stats.lro_pkts++;
8bfe8b91 1464 adapter->stats.lrobytes += length;
af19b491
AKS		 1465
1466 return buffer;
1467}
1468
1469int
1470qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1471{
1472 struct qlcnic_adapter *adapter = sds_ring->adapter;
1473 struct list_head *cur;
1474 struct status_desc *desc;
1475 struct qlcnic_rx_buffer *rxbuf;
1476 u64 sts_data0, sts_data1;
1477
1478 int count = 0;
1479 int opcode, ring, desc_cnt;
1480 u32 consumer = sds_ring->consumer;
1481
1482 while (count < max) {
1483 desc = &sds_ring->desc_head[consumer];
1484 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1485
1486 if (!(sts_data0 & STATUS_OWNER_HOST))
1487 break;
1488
1489 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1490 opcode = qlcnic_get_sts_opcode(sts_data0);
1491
1492 switch (opcode) {
1493 case QLCNIC_RXPKT_DESC:
1494 case QLCNIC_OLD_RXPKT_DESC:
1495 case QLCNIC_SYN_OFFLOAD:
1496 ring = qlcnic_get_sts_type(sts_data0);
1497 rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1498 ring, sts_data0);
1499 break;
1500 case QLCNIC_LRO_DESC:
1501 ring = qlcnic_get_lro_sts_type(sts_data0);
1502 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1503 rxbuf = qlcnic_process_lro(adapter, sds_ring,
1504 ring, sts_data0, sts_data1);
1505 break;
1506 case QLCNIC_RESPONSE_DESC:
1507 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1508 default:
1509 goto skip;
1510 }
1511
1512 WARN_ON(desc_cnt > 1);
1513
1514 if (rxbuf)
1515 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
8ae6df97
AKS		 1516 else
1517 adapter->stats.null_rxbuf++;
af19b491
AKS		 1518
1519skip:
1520 for (; desc_cnt > 0; desc_cnt--) {
1521 desc = &sds_ring->desc_head[consumer];
1522 desc->status_desc_data[0] =
1523 cpu_to_le64(STATUS_OWNER_PHANTOM);
1524 consumer = get_next_index(consumer, sds_ring->num_desc);
1525 }
1526 count++;
1527 }
1528
1529 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1530 struct qlcnic_host_rds_ring *rds_ring =
1531 &adapter->recv_ctx.rds_rings[ring];
1532
1533 if (!list_empty(&sds_ring->free_list[ring])) {
1534 list_for_each(cur, &sds_ring->free_list[ring]) {
1535 rxbuf = list_entry(cur,
1536 struct qlcnic_rx_buffer, list);
1537 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1538 }
1539 spin_lock(&rds_ring->lock);
1540 list_splice_tail_init(&sds_ring->free_list[ring],
1541 &rds_ring->free_list);
1542 spin_unlock(&rds_ring->lock);
1543 }
1544
1545 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1546 }
1547
1548 if (count) {
1549 sds_ring->consumer = consumer;
1550 writel(consumer, sds_ring->crb_sts_consumer);
1551 }
1552
1553 return count;
1554}
1555
1556void
1557qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
1558 struct qlcnic_host_rds_ring *rds_ring)
1559{
1560 struct rcv_desc *pdesc;
1561 struct qlcnic_rx_buffer *buffer;
1562 int producer, count = 0;
1563 struct list_head *head;
1564
ed6f1353
AKS		 1565 spin_lock(&rds_ring->lock);
1566
af19b491
AKS		 1567 producer = rds_ring->producer;
1568
af19b491
AKS		 1569 head = &rds_ring->free_list;
1570 while (!list_empty(head)) {
1571
1572 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1573
1574 if (!buffer->skb) {
1575 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1576 break;
1577 }
1578
1579 count++;
1580 list_del(&buffer->list);
1581
1582 /* make a rcv descriptor */
1583 pdesc = &rds_ring->desc_head[producer];
1584 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1585 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1586 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1587
1588 producer = get_next_index(producer, rds_ring->num_desc);
1589 }
af19b491
AKS		 1590
1591 if (count) {
1592 rds_ring->producer = producer;
1593 writel((producer-1) & (rds_ring->num_desc-1),
1594 rds_ring->crb_rcv_producer);
1595 }
ed6f1353 1596 spin_unlock(&rds_ring->lock);
af19b491
AKS		 1597}
1598
1599static void
1600qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1601 struct qlcnic_host_rds_ring *rds_ring)
1602{
1603 struct rcv_desc *pdesc;
1604 struct qlcnic_rx_buffer *buffer;
1605 int producer, count = 0;
1606 struct list_head *head;
1607
af19b491
AKS		 1608 if (!spin_trylock(&rds_ring->lock))
1609 return;
1610
ed6f1353
AKS		 1611 producer = rds_ring->producer;
1612
af19b491
AKS		 1613 head = &rds_ring->free_list;
1614 while (!list_empty(head)) {
1615
1616 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1617
1618 if (!buffer->skb) {
1619 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1620 break;
1621 }
1622
1623 count++;
1624 list_del(&buffer->list);
1625
1626 /* make a rcv descriptor */
1627 pdesc = &rds_ring->desc_head[producer];
1628 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1629 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1630 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1631
1632 producer = get_next_index(producer, rds_ring->num_desc);
1633 }
1634
1635 if (count) {
1636 rds_ring->producer = producer;
1637 writel((producer - 1) & (rds_ring->num_desc - 1),
1638 rds_ring->crb_rcv_producer);
1639 }
1640 spin_unlock(&rds_ring->lock);
1641}
1642
cdaff185
AKS		 1643static struct qlcnic_rx_buffer *
1644qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1645 struct qlcnic_host_sds_ring *sds_ring,
1646 int ring, u64 sts_data0)
1647{
1648 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1649 struct qlcnic_rx_buffer *buffer;
1650 struct sk_buff *skb;
1651 struct qlcnic_host_rds_ring *rds_ring;
1652 int index, length, cksum, pkt_offset;
1653
1654 if (unlikely(ring >= adapter->max_rds_rings))
1655 return NULL;
1656
1657 rds_ring = &recv_ctx->rds_rings[ring];
1658
1659 index = qlcnic_get_sts_refhandle(sts_data0);
1660 if (unlikely(index >= rds_ring->num_desc))
1661 return NULL;
1662
1663 buffer = &rds_ring->rx_buf_arr[index];
1664
1665 length = qlcnic_get_sts_totallength(sts_data0);
1666 cksum = qlcnic_get_sts_status(sts_data0);
1667 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1668
1669 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1670 if (!skb)
1671 return buffer;
1672
1673 skb_put(skb, rds_ring->skb_size);
1674
1675 if (pkt_offset)
1676 skb_pull(skb, pkt_offset);
1677
1678 skb->truesize = skb->len + sizeof(struct sk_buff);
1679
1680 if (!qlcnic_check_loopback_buff(skb->data))
1681 adapter->diag_cnt++;
1682
1683 dev_kfree_skb_any(skb);
8bfe8b91
SC		 1684 adapter->stats.rx_pkts++;
1685 adapter->stats.rxbytes += length;
cdaff185
AKS		 1686
1687 return buffer;
1688}
1689
1690void
1691qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1692{
1693 struct qlcnic_adapter *adapter = sds_ring->adapter;
1694 struct status_desc *desc;
1695 struct qlcnic_rx_buffer *rxbuf;
1696 u64 sts_data0;
1697
1698 int opcode, ring, desc_cnt;
1699 u32 consumer = sds_ring->consumer;
1700
1701 desc = &sds_ring->desc_head[consumer];
1702 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1703
1704 if (!(sts_data0 & STATUS_OWNER_HOST))
1705 return;
1706
1707 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1708 opcode = qlcnic_get_sts_opcode(sts_data0);
1709
1710 ring = qlcnic_get_sts_type(sts_data0);
1711 rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring,
1712 ring, sts_data0);
1713
1714 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1715 consumer = get_next_index(consumer, sds_ring->num_desc);
1716
1717 sds_ring->consumer = consumer;
1718 writel(consumer, sds_ring->crb_sts_consumer);
1719}
2e9d722d
AC		 1720
1721void
1722qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2,
1723 u8 alt_mac, u8 *mac)
1724{
1725 u32 mac_low, mac_high;
1726 int i;
1727
1728 mac_low = QLCRD32(adapter, off1);
1729 mac_high = QLCRD32(adapter, off2);
1730
1731 if (alt_mac) {
1732 mac_low |= (mac_low >> 16) | (mac_high << 16);
1733 mac_high >>= 16;
1734 }
1735
1736 for (i = 0; i < 2; i++)
1737 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1738 for (i = 2; i < 6; i++)
1739 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1740}
Linux kernel - Deliverables
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