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qlcnic: fix interface attach sequence
[linux-2.6-block.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>
27#include "qlcnic.h"
28
29struct crb_addr_pair {
30 u32 addr;
31 u32 data;
32};
33
34#define QLCNIC_MAX_CRB_XFORM 60
35static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
36
37#define crb_addr_transform(name) \
38 (crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \
39 QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20)
40
41#define QLCNIC_ADDR_ERROR (0xffffffff)
42
43static void
44qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
45 struct qlcnic_host_rds_ring *rds_ring);
46
47static void crb_addr_transform_setup(void)
48{
49 crb_addr_transform(XDMA);
50 crb_addr_transform(TIMR);
51 crb_addr_transform(SRE);
52 crb_addr_transform(SQN3);
53 crb_addr_transform(SQN2);
54 crb_addr_transform(SQN1);
55 crb_addr_transform(SQN0);
56 crb_addr_transform(SQS3);
57 crb_addr_transform(SQS2);
58 crb_addr_transform(SQS1);
59 crb_addr_transform(SQS0);
60 crb_addr_transform(RPMX7);
61 crb_addr_transform(RPMX6);
62 crb_addr_transform(RPMX5);
63 crb_addr_transform(RPMX4);
64 crb_addr_transform(RPMX3);
65 crb_addr_transform(RPMX2);
66 crb_addr_transform(RPMX1);
67 crb_addr_transform(RPMX0);
68 crb_addr_transform(ROMUSB);
69 crb_addr_transform(SN);
70 crb_addr_transform(QMN);
71 crb_addr_transform(QMS);
72 crb_addr_transform(PGNI);
73 crb_addr_transform(PGND);
74 crb_addr_transform(PGN3);
75 crb_addr_transform(PGN2);
76 crb_addr_transform(PGN1);
77 crb_addr_transform(PGN0);
78 crb_addr_transform(PGSI);
79 crb_addr_transform(PGSD);
80 crb_addr_transform(PGS3);
81 crb_addr_transform(PGS2);
82 crb_addr_transform(PGS1);
83 crb_addr_transform(PGS0);
84 crb_addr_transform(PS);
85 crb_addr_transform(PH);
86 crb_addr_transform(NIU);
87 crb_addr_transform(I2Q);
88 crb_addr_transform(EG);
89 crb_addr_transform(MN);
90 crb_addr_transform(MS);
91 crb_addr_transform(CAS2);
92 crb_addr_transform(CAS1);
93 crb_addr_transform(CAS0);
94 crb_addr_transform(CAM);
95 crb_addr_transform(C2C1);
96 crb_addr_transform(C2C0);
97 crb_addr_transform(SMB);
98 crb_addr_transform(OCM0);
99 crb_addr_transform(I2C0);
100}
101
102void qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter)
103{
104 struct qlcnic_recv_context *recv_ctx;
105 struct qlcnic_host_rds_ring *rds_ring;
106 struct qlcnic_rx_buffer *rx_buf;
107 int i, ring;
108
109 recv_ctx = &adapter->recv_ctx;
110 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
111 rds_ring = &recv_ctx->rds_rings[ring];
112 for (i = 0; i < rds_ring->num_desc; ++i) {
113 rx_buf = &(rds_ring->rx_buf_arr[i]);
114 if (rx_buf->state == QLCNIC_BUFFER_FREE)
115 continue;
116 pci_unmap_single(adapter->pdev,
117 rx_buf->dma,
118 rds_ring->dma_size,
119 PCI_DMA_FROMDEVICE);
120 if (rx_buf->skb != NULL)
121 dev_kfree_skb_any(rx_buf->skb);
122 }
123 }
124}
125
126void qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter)
127{
128 struct qlcnic_cmd_buffer *cmd_buf;
129 struct qlcnic_skb_frag *buffrag;
130 int i, j;
131 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
132
133 cmd_buf = tx_ring->cmd_buf_arr;
134 for (i = 0; i < tx_ring->num_desc; i++) {
135 buffrag = cmd_buf->frag_array;
136 if (buffrag->dma) {
137 pci_unmap_single(adapter->pdev, buffrag->dma,
138 buffrag->length, PCI_DMA_TODEVICE);
139 buffrag->dma = 0ULL;
140 }
141 for (j = 0; j < cmd_buf->frag_count; j++) {
142 buffrag++;
143 if (buffrag->dma) {
144 pci_unmap_page(adapter->pdev, buffrag->dma,
145 buffrag->length,
146 PCI_DMA_TODEVICE);
147 buffrag->dma = 0ULL;
148 }
149 }
150 if (cmd_buf->skb) {
151 dev_kfree_skb_any(cmd_buf->skb);
152 cmd_buf->skb = NULL;
153 }
154 cmd_buf++;
155 }
156}
157
158void qlcnic_free_sw_resources(struct qlcnic_adapter *adapter)
159{
160 struct qlcnic_recv_context *recv_ctx;
161 struct qlcnic_host_rds_ring *rds_ring;
162 struct qlcnic_host_tx_ring *tx_ring;
163 int ring;
164
165 recv_ctx = &adapter->recv_ctx;
166
167 if (recv_ctx->rds_rings == NULL)
168 goto skip_rds;
169
170 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
171 rds_ring = &recv_ctx->rds_rings[ring];
172 vfree(rds_ring->rx_buf_arr);
173 rds_ring->rx_buf_arr = NULL;
174 }
175 kfree(recv_ctx->rds_rings);
176
177skip_rds:
178 if (adapter->tx_ring == NULL)
179 return;
180
181 tx_ring = adapter->tx_ring;
182 vfree(tx_ring->cmd_buf_arr);
183 kfree(adapter->tx_ring);
184}
185
186int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter)
187{
188 struct qlcnic_recv_context *recv_ctx;
189 struct qlcnic_host_rds_ring *rds_ring;
190 struct qlcnic_host_sds_ring *sds_ring;
191 struct qlcnic_host_tx_ring *tx_ring;
192 struct qlcnic_rx_buffer *rx_buf;
193 int ring, i, size;
194
195 struct qlcnic_cmd_buffer *cmd_buf_arr;
196 struct net_device *netdev = adapter->netdev;
197
198 size = sizeof(struct qlcnic_host_tx_ring);
199 tx_ring = kzalloc(size, GFP_KERNEL);
200 if (tx_ring == NULL) {
201 dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
202 return -ENOMEM;
203 }
204 adapter->tx_ring = tx_ring;
205
206 tx_ring->num_desc = adapter->num_txd;
207 tx_ring->txq = netdev_get_tx_queue(netdev, 0);
208
209 cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
210 if (cmd_buf_arr == NULL) {
211 dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
212 return -ENOMEM;
213 }
214 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
215 tx_ring->cmd_buf_arr = cmd_buf_arr;
216
217 recv_ctx = &adapter->recv_ctx;
218
219 size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring);
220 rds_ring = kzalloc(size, GFP_KERNEL);
221 if (rds_ring == NULL) {
222 dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
223 return -ENOMEM;
224 }
225 recv_ctx->rds_rings = rds_ring;
226
227 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
228 rds_ring = &recv_ctx->rds_rings[ring];
229 switch (ring) {
230 case RCV_RING_NORMAL:
231 rds_ring->num_desc = adapter->num_rxd;
232 if (adapter->ahw.cut_through) {
233 rds_ring->dma_size =
234 QLCNIC_CT_DEFAULT_RX_BUF_LEN;
235 rds_ring->skb_size =
236 QLCNIC_CT_DEFAULT_RX_BUF_LEN;
237 } else {
238 rds_ring->dma_size =
239 QLCNIC_P3_RX_BUF_MAX_LEN;
240 rds_ring->skb_size =
241 rds_ring->dma_size + NET_IP_ALIGN;
242 }
243 break;
244
245 case RCV_RING_JUMBO:
246 rds_ring->num_desc = adapter->num_jumbo_rxd;
247 rds_ring->dma_size =
248 QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN;
249
250 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
251 rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
252
253 rds_ring->skb_size =
254 rds_ring->dma_size + NET_IP_ALIGN;
255 break;
256
257 case RCV_RING_LRO:
258 rds_ring->num_desc = adapter->num_lro_rxd;
259 rds_ring->dma_size = QLCNIC_RX_LRO_BUFFER_LENGTH;
260 rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
261 break;
262
263 }
264 rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
265 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
266 if (rds_ring->rx_buf_arr == NULL) {
267 dev_err(&netdev->dev, "Failed to allocate "
268 "rx buffer ring %d\n", ring);
269 goto err_out;
270 }
271 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
272 INIT_LIST_HEAD(&rds_ring->free_list);
273 /*
274 * Now go through all of them, set reference handles
275 * and put them in the queues.
276 */
277 rx_buf = rds_ring->rx_buf_arr;
278 for (i = 0; i < rds_ring->num_desc; i++) {
279 list_add_tail(&rx_buf->list,
280 &rds_ring->free_list);
281 rx_buf->ref_handle = i;
282 rx_buf->state = QLCNIC_BUFFER_FREE;
283 rx_buf++;
284 }
285 spin_lock_init(&rds_ring->lock);
286 }
287
288 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
289 sds_ring = &recv_ctx->sds_rings[ring];
290 sds_ring->irq = adapter->msix_entries[ring].vector;
291 sds_ring->adapter = adapter;
292 sds_ring->num_desc = adapter->num_rxd;
293
294 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
295 INIT_LIST_HEAD(&sds_ring->free_list[i]);
296 }
297
298 return 0;
299
300err_out:
301 qlcnic_free_sw_resources(adapter);
302 return -ENOMEM;
303}
304
305/*
306 * Utility to translate from internal Phantom CRB address
307 * to external PCI CRB address.
308 */
309static u32 qlcnic_decode_crb_addr(u32 addr)
310{
311 int i;
312 u32 base_addr, offset, pci_base;
313
314 crb_addr_transform_setup();
315
316 pci_base = QLCNIC_ADDR_ERROR;
317 base_addr = addr & 0xfff00000;
318 offset = addr & 0x000fffff;
319
320 for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
321 if (crb_addr_xform[i] == base_addr) {
322 pci_base = i << 20;
323 break;
324 }
325 }
326 if (pci_base == QLCNIC_ADDR_ERROR)
327 return pci_base;
328 else
329 return pci_base + offset;
330}
331
332#define QLCNIC_MAX_ROM_WAIT_USEC 100
333
334static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
335{
336 long timeout = 0;
337 long done = 0;
338
339 cond_resched();
340
341 while (done == 0) {
342 done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
343 done &= 2;
344 if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
345 dev_err(&adapter->pdev->dev,
346 "Timeout reached waiting for rom done");
347 return -EIO;
348 }
349 udelay(1);
350 }
351 return 0;
352}
353
354static int do_rom_fast_read(struct qlcnic_adapter *adapter,
355 int addr, int *valp)
356{
357 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
358 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
359 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
360 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
361 if (qlcnic_wait_rom_done(adapter)) {
362 dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
363 return -EIO;
364 }
365 /* reset abyte_cnt and dummy_byte_cnt */
366 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
367 udelay(10);
368 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
369
370 *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
371 return 0;
372}
373
374static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
375 u8 *bytes, size_t size)
376{
377 int addridx;
378 int ret = 0;
379
380 for (addridx = addr; addridx < (addr + size); addridx += 4) {
381 int v;
382 ret = do_rom_fast_read(adapter, addridx, &v);
383 if (ret != 0)
384 break;
385 *(__le32 *)bytes = cpu_to_le32(v);
386 bytes += 4;
387 }
388
389 return ret;
390}
391
392int
393qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
394 u8 *bytes, size_t size)
395{
396 int ret;
397
398 ret = qlcnic_rom_lock(adapter);
399 if (ret < 0)
400 return ret;
401
402 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
403
404 qlcnic_rom_unlock(adapter);
405 return ret;
406}
407
408int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp)
409{
410 int ret;
411
412 if (qlcnic_rom_lock(adapter) != 0)
413 return -EIO;
414
415 ret = do_rom_fast_read(adapter, addr, valp);
416 qlcnic_rom_unlock(adapter);
417 return ret;
418}
419
420int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
421{
422 int addr, val;
423 int i, n, init_delay;
424 struct crb_addr_pair *buf;
425 unsigned offset;
426 u32 off;
427 struct pci_dev *pdev = adapter->pdev;
428
429 /* resetall */
430 qlcnic_rom_lock(adapter);
431 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xffffffff);
432 qlcnic_rom_unlock(adapter);
433
434 if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
435 qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
436 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
437 return -EIO;
438 }
439 offset = n & 0xffffU;
440 n = (n >> 16) & 0xffffU;
441
442 if (n >= 1024) {
443 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
444 return -EIO;
445 }
446
447 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
448 if (buf == NULL) {
449 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
450 return -ENOMEM;
451 }
452
453 for (i = 0; i < n; i++) {
454 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
455 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
456 kfree(buf);
457 return -EIO;
458 }
459
460 buf[i].addr = addr;
461 buf[i].data = val;
462 }
463
464 for (i = 0; i < n; i++) {
465
466 off = qlcnic_decode_crb_addr(buf[i].addr);
467 if (off == QLCNIC_ADDR_ERROR) {
468 dev_err(&pdev->dev, "CRB init value out of range %x\n",
469 buf[i].addr);
470 continue;
471 }
472 off += QLCNIC_PCI_CRBSPACE;
473
474 if (off & 1)
475 continue;
476
477 /* skipping cold reboot MAGIC */
478 if (off == QLCNIC_CAM_RAM(0x1fc))
479 continue;
480 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
481 continue;
482 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
483 continue;
484 if (off == (ROMUSB_GLB + 0xa8))
485 continue;
486 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
487 continue;
488 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
489 continue;
490 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
491 continue;
492 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
493 continue;
494 /* skip the function enable register */
495 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
496 continue;
497 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
498 continue;
499 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
500 continue;
501
502 init_delay = 1;
503 /* After writing this register, HW needs time for CRB */
504 /* to quiet down (else crb_window returns 0xffffffff) */
505 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
506 init_delay = 1000;
507
508 QLCWR32(adapter, off, buf[i].data);
509
510 msleep(init_delay);
511 }
512 kfree(buf);
513
514 /* p2dn replyCount */
515 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
516 /* disable_peg_cache 0 & 1*/
517 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
518 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
519
520 /* peg_clr_all */
521 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
522 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
523 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
524 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
525 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
526 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
527 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
528 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
529 return 0;
530}
531
aa5e18c0
SC		 532void
533qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
534
535 int timeo;
536
537 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
538 timeo = 30;
539
540 adapter->dev_init_timeo = timeo;
541
542 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
543 timeo = 10;
544
545 adapter->reset_ack_timeo = timeo;
546}
547
af19b491
AKS		 548static int
549qlcnic_has_mn(struct qlcnic_adapter *adapter)
550{
551 u32 capability, flashed_ver;
552 capability = 0;
553
554 qlcnic_rom_fast_read(adapter,
555 QLCNIC_FW_VERSION_OFFSET, (int *)&flashed_ver);
556 flashed_ver = QLCNIC_DECODE_VERSION(flashed_ver);
557
558 if (flashed_ver >= QLCNIC_VERSION_CODE(4, 0, 220)) {
559
560 capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
561 if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
562 return 1;
563 }
564 return 0;
565}
566
567static
568struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
569{
570 u32 i;
571 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
572 __le32 entries = cpu_to_le32(directory->num_entries);
573
574 for (i = 0; i < entries; i++) {
575
576 __le32 offs = cpu_to_le32(directory->findex) +
577 (i * cpu_to_le32(directory->entry_size));
578 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
579
580 if (tab_type == section)
581 return (struct uni_table_desc *) &unirom[offs];
582 }
583
584 return NULL;
585}
586
b7eff100
SC		 587#define FILEHEADER_SIZE (14 * 4)
588
af19b491 589static int
b7eff100 590qlcnic_validate_header(struct qlcnic_adapter *adapter)
af19b491 591{
af19b491 592 const u8 *unirom = adapter->fw->data;
b7eff100
SC		 593 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
594 __le32 fw_file_size = adapter->fw->size;
af19b491 595 __le32 entries;
b7eff100
SC		 596 __le32 entry_size;
597 __le32 tab_size;
598
599 if (fw_file_size < FILEHEADER_SIZE)
600 return -EINVAL;
601
602 entries = cpu_to_le32(directory->num_entries);
603 entry_size = cpu_to_le32(directory->entry_size);
604 tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
605
606 if (fw_file_size < tab_size)
607 return -EINVAL;
608
609 return 0;
610}
611
612static int
613qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
614{
615 struct uni_table_desc *tab_desc;
616 struct uni_data_desc *descr;
617 const u8 *unirom = adapter->fw->data;
618 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
619 QLCNIC_UNI_BOOTLD_IDX_OFF));
620 __le32 offs;
621 __le32 tab_size;
622 __le32 data_size;
623
624 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
625
626 if (!tab_desc)
627 return -EINVAL;
628
629 tab_size = cpu_to_le32(tab_desc->findex) +
630 (cpu_to_le32(tab_desc->entry_size * (idx + 1)));
631
632 if (adapter->fw->size < tab_size)
633 return -EINVAL;
634
635 offs = cpu_to_le32(tab_desc->findex) +
636 (cpu_to_le32(tab_desc->entry_size) * (idx));
637 descr = (struct uni_data_desc *)&unirom[offs];
638
639 data_size = descr->findex + cpu_to_le32(descr->size);
640
641 if (adapter->fw->size < data_size)
642 return -EINVAL;
643
644 return 0;
645}
646
647static int
648qlcnic_validate_fw(struct qlcnic_adapter *adapter)
649{
650 struct uni_table_desc *tab_desc;
651 struct uni_data_desc *descr;
652 const u8 *unirom = adapter->fw->data;
653 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
654 QLCNIC_UNI_FIRMWARE_IDX_OFF));
655 __le32 offs;
656 __le32 tab_size;
657 __le32 data_size;
658
659 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
660
661 if (!tab_desc)
662 return -EINVAL;
663
664 tab_size = cpu_to_le32(tab_desc->findex) +
665 (cpu_to_le32(tab_desc->entry_size * (idx + 1)));
666
667 if (adapter->fw->size < tab_size)
668 return -EINVAL;
669
670 offs = cpu_to_le32(tab_desc->findex) +
671 (cpu_to_le32(tab_desc->entry_size) * (idx));
672 descr = (struct uni_data_desc *)&unirom[offs];
673 data_size = descr->findex + cpu_to_le32(descr->size);
674
675 if (adapter->fw->size < data_size)
676 return -EINVAL;
677
678 return 0;
679}
680
681static int
682qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
683{
684 struct uni_table_desc *ptab_descr;
685 const u8 *unirom = adapter->fw->data;
af19b491 686 int mn_present = qlcnic_has_mn(adapter);
b7eff100
SC		 687 __le32 entries;
688 __le32 entry_size;
689 __le32 tab_size;
690 u32 i;
af19b491
AKS		 691
692 ptab_descr = qlcnic_get_table_desc(unirom,
693 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
b7eff100
SC		 694 if (!ptab_descr)
695 return -EINVAL;
af19b491
AKS		 696
697 entries = cpu_to_le32(ptab_descr->num_entries);
b7eff100
SC		 698 entry_size = cpu_to_le32(ptab_descr->entry_size);
699 tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
700
701 if (adapter->fw->size < tab_size)
702 return -EINVAL;
703
af19b491
AKS		 704nomn:
705 for (i = 0; i < entries; i++) {
706
707 __le32 flags, file_chiprev, offs;
708 u8 chiprev = adapter->ahw.revision_id;
709 u32 flagbit;
710
711 offs = cpu_to_le32(ptab_descr->findex) +
712 (i * cpu_to_le32(ptab_descr->entry_size));
713 flags = cpu_to_le32(*((int *)&unirom[offs] +
714 QLCNIC_UNI_FLAGS_OFF));
715 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
716 QLCNIC_UNI_CHIP_REV_OFF));
717
718 flagbit = mn_present ? 1 : 2;
719
720 if ((chiprev == file_chiprev) &&
721 ((1ULL << flagbit) & flags)) {
722 adapter->file_prd_off = offs;
723 return 0;
724 }
725 }
726 if (mn_present) {
727 mn_present = 0;
728 goto nomn;
729 }
b7eff100
SC		 730 return -EINVAL;
731}
732
733static int
734qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
735{
736 if (qlcnic_validate_header(adapter)) {
737 dev_err(&adapter->pdev->dev,
738 "unified image: header validation failed\n");
739 return -EINVAL;
740 }
741
742 if (qlcnic_validate_product_offs(adapter)) {
743 dev_err(&adapter->pdev->dev,
744 "unified image: product validation failed\n");
745 return -EINVAL;
746 }
747
748 if (qlcnic_validate_bootld(adapter)) {
749 dev_err(&adapter->pdev->dev,
750 "unified image: bootld validation failed\n");
751 return -EINVAL;
752 }
753
754 if (qlcnic_validate_fw(adapter)) {
755 dev_err(&adapter->pdev->dev,
756 "unified image: firmware validation failed\n");
757 return -EINVAL;
758 }
759
760 return 0;
af19b491
AKS		 761}
762
763static
764struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
765 u32 section, u32 idx_offset)
766{
767 const u8 *unirom = adapter->fw->data;
768 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
769 idx_offset));
770 struct uni_table_desc *tab_desc;
771 __le32 offs;
772
773 tab_desc = qlcnic_get_table_desc(unirom, section);
774
775 if (tab_desc == NULL)
776 return NULL;
777
778 offs = cpu_to_le32(tab_desc->findex) +
779 (cpu_to_le32(tab_desc->entry_size) * idx);
780
781 return (struct uni_data_desc *)&unirom[offs];
782}
783
784static u8 *
785qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
786{
787 u32 offs = QLCNIC_BOOTLD_START;
788
789 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
790 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
791 QLCNIC_UNI_DIR_SECT_BOOTLD,
792 QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
793
794 return (u8 *)&adapter->fw->data[offs];
795}
796
797static u8 *
798qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
799{
800 u32 offs = QLCNIC_IMAGE_START;
801
802 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
803 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
804 QLCNIC_UNI_DIR_SECT_FW,
805 QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
806
807 return (u8 *)&adapter->fw->data[offs];
808}
809
810static __le32
811qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
812{
813 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
814 return cpu_to_le32((qlcnic_get_data_desc(adapter,
815 QLCNIC_UNI_DIR_SECT_FW,
816 QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
817 else
818 return cpu_to_le32(
819 *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
820}
821
822static __le32
823qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
824{
825 struct uni_data_desc *fw_data_desc;
826 const struct firmware *fw = adapter->fw;
827 __le32 major, minor, sub;
828 const u8 *ver_str;
829 int i, ret;
830
831 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
832 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
833
834 fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
835 QLCNIC_UNI_FIRMWARE_IDX_OFF);
836 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
837 cpu_to_le32(fw_data_desc->size) - 17;
838
839 for (i = 0; i < 12; i++) {
840 if (!strncmp(&ver_str[i], "REV=", 4)) {
841 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
842 &major, &minor, &sub);
843 if (ret != 3)
844 return 0;
845 else
846 return major + (minor << 8) + (sub << 16);
847 }
848 }
849
850 return 0;
851}
852
853static __le32
854qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
855{
856 const struct firmware *fw = adapter->fw;
857 __le32 bios_ver, prd_off = adapter->file_prd_off;
858
859 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
860 return cpu_to_le32(
861 *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
862
863 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
864 + QLCNIC_UNI_BIOS_VERSION_OFF));
865
addd5abf 866 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
af19b491
AKS		 867}
868
869int
870qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
871{
872 u32 count, old_count;
873 u32 val, version, major, minor, build;
874 int i, timeout;
875
876 if (adapter->need_fw_reset)
877 return 1;
878
879 /* last attempt had failed */
880 if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
881 return 1;
882
883 old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
884
885 for (i = 0; i < 10; i++) {
886
887 timeout = msleep_interruptible(200);
888 if (timeout) {
889 QLCWR32(adapter, CRB_CMDPEG_STATE,
890 PHAN_INITIALIZE_FAILED);
891 return -EINTR;
892 }
893
894 count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
895 if (count != old_count)
896 break;
897 }
898
899 /* firmware is dead */
900 if (count == old_count)
901 return 1;
902
903 /* check if we have got newer or different file firmware */
904 if (adapter->fw) {
905
906 val = qlcnic_get_fw_version(adapter);
907
908 version = QLCNIC_DECODE_VERSION(val);
909
910 major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
911 minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
912 build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
913
914 if (version > QLCNIC_VERSION_CODE(major, minor, build))
915 return 1;
916 }
917
918 return 0;
919}
920
921static const char *fw_name[] = {
922 QLCNIC_UNIFIED_ROMIMAGE_NAME,
923 QLCNIC_FLASH_ROMIMAGE_NAME,
924};
925
926int
927qlcnic_load_firmware(struct qlcnic_adapter *adapter)
928{
929 u64 *ptr64;
930 u32 i, flashaddr, size;
931 const struct firmware *fw = adapter->fw;
932 struct pci_dev *pdev = adapter->pdev;
933
934 dev_info(&pdev->dev, "loading firmware from %s\n",
935 fw_name[adapter->fw_type]);
936
937 if (fw) {
938 __le64 data;
939
940 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
941
942 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
943 flashaddr = QLCNIC_BOOTLD_START;
944
945 for (i = 0; i < size; i++) {
946 data = cpu_to_le64(ptr64[i]);
947
948 if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
949 return -EIO;
950
951 flashaddr += 8;
952 }
953
954 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
955
956 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
957 flashaddr = QLCNIC_IMAGE_START;
958
959 for (i = 0; i < size; i++) {
960 data = cpu_to_le64(ptr64[i]);
961
962 if (qlcnic_pci_mem_write_2M(adapter,
963 flashaddr, data))
964 return -EIO;
965
966 flashaddr += 8;
967 }
0bc92b5b
AKS		 968
969 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
970 if (size) {
971 data = cpu_to_le64(ptr64[i]);
972
973 if (qlcnic_pci_mem_write_2M(adapter,
974 flashaddr, data))
975 return -EIO;
976 }
977
af19b491
AKS		 978 } else {
979 u64 data;
980 u32 hi, lo;
981
982 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
983 flashaddr = QLCNIC_BOOTLD_START;
984
985 for (i = 0; i < size; i++) {
986 if (qlcnic_rom_fast_read(adapter,
987 flashaddr, (int *)&lo) != 0)
988 return -EIO;
989 if (qlcnic_rom_fast_read(adapter,
990 flashaddr + 4, (int *)&hi) != 0)
991 return -EIO;
992
993 data = (((u64)hi << 32) | lo);
994
995 if (qlcnic_pci_mem_write_2M(adapter,
996 flashaddr, data))
997 return -EIO;
998
999 flashaddr += 8;
1000 }
1001 }
1002 msleep(1);
1003
1004 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
1005 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
1006 return 0;
1007}
1008
1009static int
1010qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
1011{
1012 __le32 val;
1013 u32 ver, min_ver, bios, min_size;
1014 struct pci_dev *pdev = adapter->pdev;
1015 const struct firmware *fw = adapter->fw;
1016 u8 fw_type = adapter->fw_type;
1017
1018 if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
b7eff100 1019 if (qlcnic_validate_unified_romimage(adapter))
af19b491
AKS		 1020 return -EINVAL;
1021
1022 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1023 } else {
1024 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1025 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1026 return -EINVAL;
1027
1028 min_size = QLCNIC_FW_MIN_SIZE;
1029 }
1030
1031 if (fw->size < min_size)
1032 return -EINVAL;
1033
1034 val = qlcnic_get_fw_version(adapter);
1035
1036 min_ver = QLCNIC_VERSION_CODE(4, 0, 216);
1037
1038 ver = QLCNIC_DECODE_VERSION(val);
1039
1040 if ((_major(ver) > _QLCNIC_LINUX_MAJOR) || (ver < min_ver)) {
1041 dev_err(&pdev->dev,
1042 "%s: firmware version %d.%d.%d unsupported\n",
1043 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1044 return -EINVAL;
1045 }
1046
1047 val = qlcnic_get_bios_version(adapter);
1048 qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1049 if ((__force u32)val != bios) {
1050 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1051 fw_name[fw_type]);
1052 return -EINVAL;
1053 }
1054
1055 /* check if flashed firmware is newer */
1056 if (qlcnic_rom_fast_read(adapter,
1057 QLCNIC_FW_VERSION_OFFSET, (int *)&val))
1058 return -EIO;
1059
1060 val = QLCNIC_DECODE_VERSION(val);
1061 if (val > ver) {
1062 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1063 fw_name[fw_type]);
1064 return -EINVAL;
1065 }
1066
1067 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1068 return 0;
1069}
1070
1071static void
1072qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1073{
1074 u8 fw_type;
1075
1076 switch (adapter->fw_type) {
1077 case QLCNIC_UNKNOWN_ROMIMAGE:
1078 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1079 break;
1080
1081 case QLCNIC_UNIFIED_ROMIMAGE:
1082 default:
1083 fw_type = QLCNIC_FLASH_ROMIMAGE;
1084 break;
1085 }
1086
1087 adapter->fw_type = fw_type;
1088}
1089
1090
1091
1092void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1093{
1094 struct pci_dev *pdev = adapter->pdev;
1095 int rc;
1096
1097 adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1098
1099next:
1100 qlcnic_get_next_fwtype(adapter);
1101
1102 if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1103 adapter->fw = NULL;
1104 } else {
1105 rc = request_firmware(&adapter->fw,
1106 fw_name[adapter->fw_type], &pdev->dev);
1107 if (rc != 0)
1108 goto next;
1109
1110 rc = qlcnic_validate_firmware(adapter);
1111 if (rc != 0) {
1112 release_firmware(adapter->fw);
1113 msleep(1);
1114 goto next;
1115 }
1116 }
1117}
1118
1119
1120void
1121qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1122{
1123 if (adapter->fw)
1124 release_firmware(adapter->fw);
1125 adapter->fw = NULL;
1126}
1127
1128int qlcnic_phantom_init(struct qlcnic_adapter *adapter)
1129{
1130 u32 val;
1131 int retries = 60;
1132
1133 do {
1134 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
1135
1136 switch (val) {
1137 case PHAN_INITIALIZE_COMPLETE:
1138 case PHAN_INITIALIZE_ACK:
1139 return 0;
1140 case PHAN_INITIALIZE_FAILED:
1141 goto out_err;
1142 default:
1143 break;
1144 }
1145
1146 msleep(500);
1147
1148 } while (--retries);
1149
1150 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1151
1152out_err:
1153 dev_err(&adapter->pdev->dev, "firmware init failed\n");
1154 return -EIO;
1155}
1156
1157static int
1158qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
1159{
1160 u32 val;
1161 int retries = 2000;
1162
1163 do {
1164 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
1165
1166 if (val == PHAN_PEG_RCV_INITIALIZED)
1167 return 0;
1168
1169 msleep(10);
1170
1171 } while (--retries);
1172
1173 if (!retries) {
1174 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
1175 "complete, state: 0x%x.\n", val);
1176 return -EIO;
1177 }
1178
1179 return 0;
1180}
1181
1182int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
1183{
1184 int err;
1185
1186 err = qlcnic_receive_peg_ready(adapter);
1187 if (err)
1188 return err;
1189
1190 QLCWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1191 QLCWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1192 QLCWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1193 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1194
1195 return err;
1196}
1197
1198static void
1199qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1200 struct qlcnic_fw_msg *msg)
1201{
1202 u32 cable_OUI;
1203 u16 cable_len;
1204 u16 link_speed;
1205 u8 link_status, module, duplex, autoneg;
1206 struct net_device *netdev = adapter->netdev;
1207
1208 adapter->has_link_events = 1;
1209
1210 cable_OUI = msg->body[1] & 0xffffffff;
1211 cable_len = (msg->body[1] >> 32) & 0xffff;
1212 link_speed = (msg->body[1] >> 48) & 0xffff;
1213
1214 link_status = msg->body[2] & 0xff;
1215 duplex = (msg->body[2] >> 16) & 0xff;
1216 autoneg = (msg->body[2] >> 24) & 0xff;
1217
1218 module = (msg->body[2] >> 8) & 0xff;
1219 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1220 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1221 "length %d\n", cable_OUI, cable_len);
1222 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1223 dev_info(&netdev->dev, "unsupported cable length %d\n",
1224 cable_len);
1225
1226 qlcnic_advert_link_change(adapter, link_status);
1227
1228 if (duplex == LINKEVENT_FULL_DUPLEX)
1229 adapter->link_duplex = DUPLEX_FULL;
1230 else
1231 adapter->link_duplex = DUPLEX_HALF;
1232
1233 adapter->module_type = module;
1234 adapter->link_autoneg = autoneg;
1235 adapter->link_speed = link_speed;
1236}
1237
1238static void
1239qlcnic_handle_fw_message(int desc_cnt, int index,
1240 struct qlcnic_host_sds_ring *sds_ring)
1241{
1242 struct qlcnic_fw_msg msg;
1243 struct status_desc *desc;
1244 int i = 0, opcode;
1245
1246 while (desc_cnt > 0 && i < 8) {
1247 desc = &sds_ring->desc_head[index];
1248 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1249 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1250
1251 index = get_next_index(index, sds_ring->num_desc);
1252 desc_cnt--;
1253 }
1254
1255 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1256 switch (opcode) {
1257 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1258 qlcnic_handle_linkevent(sds_ring->adapter, &msg);
1259 break;
1260 default:
1261 break;
1262 }
1263}
1264
1265static int
1266qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1267 struct qlcnic_host_rds_ring *rds_ring,
1268 struct qlcnic_rx_buffer *buffer)
1269{
1270 struct sk_buff *skb;
1271 dma_addr_t dma;
1272 struct pci_dev *pdev = adapter->pdev;
1273
1274 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
8bfe8b91
SC		 1275 if (!buffer->skb) {
1276 adapter->stats.skb_alloc_failure++;
af19b491 1277 return -ENOMEM;
8bfe8b91 1278 }
af19b491
AKS		 1279
1280 skb = buffer->skb;
1281
1282 if (!adapter->ahw.cut_through)
1283 skb_reserve(skb, 2);
1284
1285 dma = pci_map_single(pdev, skb->data,
1286 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1287
1288 if (pci_dma_mapping_error(pdev, dma)) {
1289 dev_kfree_skb_any(skb);
1290 buffer->skb = NULL;
1291 return -ENOMEM;
1292 }
1293
1294 buffer->skb = skb;
1295 buffer->dma = dma;
1296 buffer->state = QLCNIC_BUFFER_BUSY;
1297
1298 return 0;
1299}
1300
1301static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1302 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1303{
1304 struct qlcnic_rx_buffer *buffer;
1305 struct sk_buff *skb;
1306
1307 buffer = &rds_ring->rx_buf_arr[index];
1308
1309 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1310 PCI_DMA_FROMDEVICE);
1311
1312 skb = buffer->skb;
1313 if (!skb)
1314 goto no_skb;
1315
1316 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1317 adapter->stats.csummed++;
1318 skb->ip_summed = CHECKSUM_UNNECESSARY;
1319 } else {
1320 skb->ip_summed = CHECKSUM_NONE;
1321 }
1322
1323 skb->dev = adapter->netdev;
1324
1325 buffer->skb = NULL;
1326no_skb:
1327 buffer->state = QLCNIC_BUFFER_FREE;
1328 return skb;
1329}
1330
1331static struct qlcnic_rx_buffer *
1332qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1333 struct qlcnic_host_sds_ring *sds_ring,
1334 int ring, u64 sts_data0)
1335{
1336 struct net_device *netdev = adapter->netdev;
1337 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1338 struct qlcnic_rx_buffer *buffer;
1339 struct sk_buff *skb;
1340 struct qlcnic_host_rds_ring *rds_ring;
1341 int index, length, cksum, pkt_offset;
1342
1343 if (unlikely(ring >= adapter->max_rds_rings))
1344 return NULL;
1345
1346 rds_ring = &recv_ctx->rds_rings[ring];
1347
1348 index = qlcnic_get_sts_refhandle(sts_data0);
1349 if (unlikely(index >= rds_ring->num_desc))
1350 return NULL;
1351
1352 buffer = &rds_ring->rx_buf_arr[index];
1353
1354 length = qlcnic_get_sts_totallength(sts_data0);
1355 cksum = qlcnic_get_sts_status(sts_data0);
1356 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1357
1358 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1359 if (!skb)
1360 return buffer;
1361
1362 if (length > rds_ring->skb_size)
1363 skb_put(skb, rds_ring->skb_size);
1364 else
1365 skb_put(skb, length);
1366
1367 if (pkt_offset)
1368 skb_pull(skb, pkt_offset);
1369
1370 skb->truesize = skb->len + sizeof(struct sk_buff);
1371 skb->protocol = eth_type_trans(skb, netdev);
1372
1373 napi_gro_receive(&sds_ring->napi, skb);
1374
1375 adapter->stats.rx_pkts++;
1376 adapter->stats.rxbytes += length;
1377
1378 return buffer;
1379}
1380
1381#define QLC_TCP_HDR_SIZE 20
1382#define QLC_TCP_TS_OPTION_SIZE 12
1383#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1384
1385static struct qlcnic_rx_buffer *
1386qlcnic_process_lro(struct qlcnic_adapter *adapter,
1387 struct qlcnic_host_sds_ring *sds_ring,
1388 int ring, u64 sts_data0, u64 sts_data1)
1389{
1390 struct net_device *netdev = adapter->netdev;
1391 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1392 struct qlcnic_rx_buffer *buffer;
1393 struct sk_buff *skb;
1394 struct qlcnic_host_rds_ring *rds_ring;
1395 struct iphdr *iph;
1396 struct tcphdr *th;
1397 bool push, timestamp;
1398 int l2_hdr_offset, l4_hdr_offset;
1399 int index;
1400 u16 lro_length, length, data_offset;
1401 u32 seq_number;
1402
1403 if (unlikely(ring > adapter->max_rds_rings))
1404 return NULL;
1405
1406 rds_ring = &recv_ctx->rds_rings[ring];
1407
1408 index = qlcnic_get_lro_sts_refhandle(sts_data0);
1409 if (unlikely(index > rds_ring->num_desc))
1410 return NULL;
1411
1412 buffer = &rds_ring->rx_buf_arr[index];
1413
1414 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1415 lro_length = qlcnic_get_lro_sts_length(sts_data0);
1416 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1417 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1418 push = qlcnic_get_lro_sts_push_flag(sts_data0);
1419 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1420
1421 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1422 if (!skb)
1423 return buffer;
1424
1425 if (timestamp)
1426 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1427 else
1428 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1429
1430 skb_put(skb, lro_length + data_offset);
1431
1432 skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1433
1434 skb_pull(skb, l2_hdr_offset);
1435 skb->protocol = eth_type_trans(skb, netdev);
1436
1437 iph = (struct iphdr *)skb->data;
1438 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1439
1440 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1441 iph->tot_len = htons(length);
1442 iph->check = 0;
1443 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1444 th->psh = push;
1445 th->seq = htonl(seq_number);
1446
1447 length = skb->len;
1448
1449 netif_receive_skb(skb);
1450
1451 adapter->stats.lro_pkts++;
8bfe8b91 1452 adapter->stats.lrobytes += length;
af19b491
AKS		 1453
1454 return buffer;
1455}
1456
1457int
1458qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1459{
1460 struct qlcnic_adapter *adapter = sds_ring->adapter;
1461 struct list_head *cur;
1462 struct status_desc *desc;
1463 struct qlcnic_rx_buffer *rxbuf;
1464 u64 sts_data0, sts_data1;
1465
1466 int count = 0;
1467 int opcode, ring, desc_cnt;
1468 u32 consumer = sds_ring->consumer;
1469
1470 while (count < max) {
1471 desc = &sds_ring->desc_head[consumer];
1472 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1473
1474 if (!(sts_data0 & STATUS_OWNER_HOST))
1475 break;
1476
1477 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1478 opcode = qlcnic_get_sts_opcode(sts_data0);
1479
1480 switch (opcode) {
1481 case QLCNIC_RXPKT_DESC:
1482 case QLCNIC_OLD_RXPKT_DESC:
1483 case QLCNIC_SYN_OFFLOAD:
1484 ring = qlcnic_get_sts_type(sts_data0);
1485 rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1486 ring, sts_data0);
1487 break;
1488 case QLCNIC_LRO_DESC:
1489 ring = qlcnic_get_lro_sts_type(sts_data0);
1490 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1491 rxbuf = qlcnic_process_lro(adapter, sds_ring,
1492 ring, sts_data0, sts_data1);
1493 break;
1494 case QLCNIC_RESPONSE_DESC:
1495 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1496 default:
1497 goto skip;
1498 }
1499
1500 WARN_ON(desc_cnt > 1);
1501
1502 if (rxbuf)
1503 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1504
1505skip:
1506 for (; desc_cnt > 0; desc_cnt--) {
1507 desc = &sds_ring->desc_head[consumer];
1508 desc->status_desc_data[0] =
1509 cpu_to_le64(STATUS_OWNER_PHANTOM);
1510 consumer = get_next_index(consumer, sds_ring->num_desc);
1511 }
1512 count++;
1513 }
1514
1515 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1516 struct qlcnic_host_rds_ring *rds_ring =
1517 &adapter->recv_ctx.rds_rings[ring];
1518
1519 if (!list_empty(&sds_ring->free_list[ring])) {
1520 list_for_each(cur, &sds_ring->free_list[ring]) {
1521 rxbuf = list_entry(cur,
1522 struct qlcnic_rx_buffer, list);
1523 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1524 }
1525 spin_lock(&rds_ring->lock);
1526 list_splice_tail_init(&sds_ring->free_list[ring],
1527 &rds_ring->free_list);
1528 spin_unlock(&rds_ring->lock);
1529 }
1530
1531 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1532 }
1533
1534 if (count) {
1535 sds_ring->consumer = consumer;
1536 writel(consumer, sds_ring->crb_sts_consumer);
1537 }
1538
1539 return count;
1540}
1541
1542void
1543qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
1544 struct qlcnic_host_rds_ring *rds_ring)
1545{
1546 struct rcv_desc *pdesc;
1547 struct qlcnic_rx_buffer *buffer;
1548 int producer, count = 0;
1549 struct list_head *head;
1550
1551 producer = rds_ring->producer;
1552
1553 spin_lock(&rds_ring->lock);
1554 head = &rds_ring->free_list;
1555 while (!list_empty(head)) {
1556
1557 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1558
1559 if (!buffer->skb) {
1560 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1561 break;
1562 }
1563
1564 count++;
1565 list_del(&buffer->list);
1566
1567 /* make a rcv descriptor */
1568 pdesc = &rds_ring->desc_head[producer];
1569 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1570 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1571 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1572
1573 producer = get_next_index(producer, rds_ring->num_desc);
1574 }
1575 spin_unlock(&rds_ring->lock);
1576
1577 if (count) {
1578 rds_ring->producer = producer;
1579 writel((producer-1) & (rds_ring->num_desc-1),
1580 rds_ring->crb_rcv_producer);
1581 }
1582}
1583
1584static void
1585qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1586 struct qlcnic_host_rds_ring *rds_ring)
1587{
1588 struct rcv_desc *pdesc;
1589 struct qlcnic_rx_buffer *buffer;
1590 int producer, count = 0;
1591 struct list_head *head;
1592
1593 producer = rds_ring->producer;
1594 if (!spin_trylock(&rds_ring->lock))
1595 return;
1596
1597 head = &rds_ring->free_list;
1598 while (!list_empty(head)) {
1599
1600 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1601
1602 if (!buffer->skb) {
1603 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1604 break;
1605 }
1606
1607 count++;
1608 list_del(&buffer->list);
1609
1610 /* make a rcv descriptor */
1611 pdesc = &rds_ring->desc_head[producer];
1612 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1613 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1614 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1615
1616 producer = get_next_index(producer, rds_ring->num_desc);
1617 }
1618
1619 if (count) {
1620 rds_ring->producer = producer;
1621 writel((producer - 1) & (rds_ring->num_desc - 1),
1622 rds_ring->crb_rcv_producer);
1623 }
1624 spin_unlock(&rds_ring->lock);
1625}
1626
cdaff185
AKS		 1627static struct qlcnic_rx_buffer *
1628qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1629 struct qlcnic_host_sds_ring *sds_ring,
1630 int ring, u64 sts_data0)
1631{
1632 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1633 struct qlcnic_rx_buffer *buffer;
1634 struct sk_buff *skb;
1635 struct qlcnic_host_rds_ring *rds_ring;
1636 int index, length, cksum, pkt_offset;
1637
1638 if (unlikely(ring >= adapter->max_rds_rings))
1639 return NULL;
1640
1641 rds_ring = &recv_ctx->rds_rings[ring];
1642
1643 index = qlcnic_get_sts_refhandle(sts_data0);
1644 if (unlikely(index >= rds_ring->num_desc))
1645 return NULL;
1646
1647 buffer = &rds_ring->rx_buf_arr[index];
1648
1649 length = qlcnic_get_sts_totallength(sts_data0);
1650 cksum = qlcnic_get_sts_status(sts_data0);
1651 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1652
1653 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1654 if (!skb)
1655 return buffer;
1656
1657 skb_put(skb, rds_ring->skb_size);
1658
1659 if (pkt_offset)
1660 skb_pull(skb, pkt_offset);
1661
1662 skb->truesize = skb->len + sizeof(struct sk_buff);
1663
1664 if (!qlcnic_check_loopback_buff(skb->data))
1665 adapter->diag_cnt++;
1666
1667 dev_kfree_skb_any(skb);
8bfe8b91
SC		 1668 adapter->stats.rx_pkts++;
1669 adapter->stats.rxbytes += length;
cdaff185
AKS		 1670
1671 return buffer;
1672}
1673
1674void
1675qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1676{
1677 struct qlcnic_adapter *adapter = sds_ring->adapter;
1678 struct status_desc *desc;
1679 struct qlcnic_rx_buffer *rxbuf;
1680 u64 sts_data0;
1681
1682 int opcode, ring, desc_cnt;
1683 u32 consumer = sds_ring->consumer;
1684
1685 desc = &sds_ring->desc_head[consumer];
1686 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1687
1688 if (!(sts_data0 & STATUS_OWNER_HOST))
1689 return;
1690
1691 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1692 opcode = qlcnic_get_sts_opcode(sts_data0);
1693
1694 ring = qlcnic_get_sts_type(sts_data0);
1695 rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring,
1696 ring, sts_data0);
1697
1698 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1699 consumer = get_next_index(consumer, sds_ring->num_desc);
1700
1701 sds_ring->consumer = consumer;
1702 writel(consumer, sds_ring->crb_sts_consumer);
1703}
Linux 6.x block layer and io_uring tree(s)