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[net-next-2.6.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);
184 kfree(adapter->tx_ring);
185}
186
187int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter)
188{
189 struct qlcnic_recv_context *recv_ctx;
190 struct qlcnic_host_rds_ring *rds_ring;
191 struct qlcnic_host_sds_ring *sds_ring;
192 struct qlcnic_host_tx_ring *tx_ring;
193 struct qlcnic_rx_buffer *rx_buf;
194 int ring, i, size;
195
196 struct qlcnic_cmd_buffer *cmd_buf_arr;
197 struct net_device *netdev = adapter->netdev;
198
199 size = sizeof(struct qlcnic_host_tx_ring);
200 tx_ring = kzalloc(size, GFP_KERNEL);
201 if (tx_ring == NULL) {
202 dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
203 return -ENOMEM;
204 }
205 adapter->tx_ring = tx_ring;
206
207 tx_ring->num_desc = adapter->num_txd;
208 tx_ring->txq = netdev_get_tx_queue(netdev, 0);
209
210 cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
211 if (cmd_buf_arr == NULL) {
212 dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
213 return -ENOMEM;
214 }
215 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
216 tx_ring->cmd_buf_arr = cmd_buf_arr;
217
218 recv_ctx = &adapter->recv_ctx;
219
220 size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring);
221 rds_ring = kzalloc(size, GFP_KERNEL);
222 if (rds_ring == NULL) {
223 dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
224 return -ENOMEM;
225 }
226 recv_ctx->rds_rings = rds_ring;
227
228 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
229 rds_ring = &recv_ctx->rds_rings[ring];
230 switch (ring) {
231 case RCV_RING_NORMAL:
232 rds_ring->num_desc = adapter->num_rxd;
251a84c9
AKS		 233 rds_ring->dma_size = QLCNIC_P3_RX_BUF_MAX_LEN;
234 rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
af19b491
AKS		 235 break;
236
237 case RCV_RING_JUMBO:
238 rds_ring->num_desc = adapter->num_jumbo_rxd;
239 rds_ring->dma_size =
240 QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN;
241
242 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
243 rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
244
245 rds_ring->skb_size =
246 rds_ring->dma_size + NET_IP_ALIGN;
247 break;
af19b491
AKS		 248 }
249 rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
250 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
251 if (rds_ring->rx_buf_arr == NULL) {
252 dev_err(&netdev->dev, "Failed to allocate "
253 "rx buffer ring %d\n", ring);
254 goto err_out;
255 }
256 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
257 INIT_LIST_HEAD(&rds_ring->free_list);
258 /*
259 * Now go through all of them, set reference handles
260 * and put them in the queues.
261 */
262 rx_buf = rds_ring->rx_buf_arr;
263 for (i = 0; i < rds_ring->num_desc; i++) {
264 list_add_tail(&rx_buf->list,
265 &rds_ring->free_list);
266 rx_buf->ref_handle = i;
267 rx_buf->state = QLCNIC_BUFFER_FREE;
268 rx_buf++;
269 }
270 spin_lock_init(&rds_ring->lock);
271 }
272
273 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
274 sds_ring = &recv_ctx->sds_rings[ring];
275 sds_ring->irq = adapter->msix_entries[ring].vector;
276 sds_ring->adapter = adapter;
277 sds_ring->num_desc = adapter->num_rxd;
278
279 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
280 INIT_LIST_HEAD(&sds_ring->free_list[i]);
281 }
282
283 return 0;
284
285err_out:
286 qlcnic_free_sw_resources(adapter);
287 return -ENOMEM;
288}
289
290/*
291 * Utility to translate from internal Phantom CRB address
292 * to external PCI CRB address.
293 */
294static u32 qlcnic_decode_crb_addr(u32 addr)
295{
296 int i;
297 u32 base_addr, offset, pci_base;
298
299 crb_addr_transform_setup();
300
301 pci_base = QLCNIC_ADDR_ERROR;
302 base_addr = addr & 0xfff00000;
303 offset = addr & 0x000fffff;
304
305 for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
306 if (crb_addr_xform[i] == base_addr) {
307 pci_base = i << 20;
308 break;
309 }
310 }
311 if (pci_base == QLCNIC_ADDR_ERROR)
312 return pci_base;
313 else
314 return pci_base + offset;
315}
316
317#define QLCNIC_MAX_ROM_WAIT_USEC 100
318
319static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
320{
321 long timeout = 0;
322 long done = 0;
323
324 cond_resched();
325
326 while (done == 0) {
327 done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
328 done &= 2;
329 if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
330 dev_err(&adapter->pdev->dev,
331 "Timeout reached waiting for rom done");
332 return -EIO;
333 }
334 udelay(1);
335 }
336 return 0;
337}
338
339static int do_rom_fast_read(struct qlcnic_adapter *adapter,
340 int addr, int *valp)
341{
342 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
343 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
344 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
345 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
346 if (qlcnic_wait_rom_done(adapter)) {
347 dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
348 return -EIO;
349 }
350 /* reset abyte_cnt and dummy_byte_cnt */
351 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
352 udelay(10);
353 QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
354
355 *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
356 return 0;
357}
358
359static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
360 u8 *bytes, size_t size)
361{
362 int addridx;
363 int ret = 0;
364
365 for (addridx = addr; addridx < (addr + size); addridx += 4) {
366 int v;
367 ret = do_rom_fast_read(adapter, addridx, &v);
368 if (ret != 0)
369 break;
370 *(__le32 *)bytes = cpu_to_le32(v);
371 bytes += 4;
372 }
373
374 return ret;
375}
376
377int
378qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
379 u8 *bytes, size_t size)
380{
381 int ret;
382
383 ret = qlcnic_rom_lock(adapter);
384 if (ret < 0)
385 return ret;
386
387 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
388
389 qlcnic_rom_unlock(adapter);
390 return ret;
391}
392
393int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp)
394{
395 int ret;
396
397 if (qlcnic_rom_lock(adapter) != 0)
398 return -EIO;
399
400 ret = do_rom_fast_read(adapter, addr, valp);
401 qlcnic_rom_unlock(adapter);
402 return ret;
403}
404
405int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
406{
407 int addr, val;
408 int i, n, init_delay;
409 struct crb_addr_pair *buf;
410 unsigned offset;
411 u32 off;
412 struct pci_dev *pdev = adapter->pdev;
413
414 /* resetall */
415 qlcnic_rom_lock(adapter);
416 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xffffffff);
417 qlcnic_rom_unlock(adapter);
418
419 if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
420 qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
421 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
422 return -EIO;
423 }
424 offset = n & 0xffffU;
425 n = (n >> 16) & 0xffffU;
426
427 if (n >= 1024) {
428 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
429 return -EIO;
430 }
431
432 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
433 if (buf == NULL) {
434 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
435 return -ENOMEM;
436 }
437
438 for (i = 0; i < n; i++) {
439 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
440 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
441 kfree(buf);
442 return -EIO;
443 }
444
445 buf[i].addr = addr;
446 buf[i].data = val;
447 }
448
449 for (i = 0; i < n; i++) {
450
451 off = qlcnic_decode_crb_addr(buf[i].addr);
452 if (off == QLCNIC_ADDR_ERROR) {
453 dev_err(&pdev->dev, "CRB init value out of range %x\n",
454 buf[i].addr);
455 continue;
456 }
457 off += QLCNIC_PCI_CRBSPACE;
458
459 if (off & 1)
460 continue;
461
462 /* skipping cold reboot MAGIC */
463 if (off == QLCNIC_CAM_RAM(0x1fc))
464 continue;
465 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
466 continue;
467 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
468 continue;
469 if (off == (ROMUSB_GLB + 0xa8))
470 continue;
471 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
472 continue;
473 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
474 continue;
475 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
476 continue;
477 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
478 continue;
479 /* skip the function enable register */
480 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
481 continue;
482 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
483 continue;
484 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
485 continue;
486
487 init_delay = 1;
488 /* After writing this register, HW needs time for CRB */
489 /* to quiet down (else crb_window returns 0xffffffff) */
490 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
491 init_delay = 1000;
492
493 QLCWR32(adapter, off, buf[i].data);
494
495 msleep(init_delay);
496 }
497 kfree(buf);
498
499 /* p2dn replyCount */
500 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
501 /* disable_peg_cache 0 & 1*/
502 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
503 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
504
505 /* peg_clr_all */
506 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
507 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
508 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
509 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
510 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
511 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
512 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
513 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
514 return 0;
515}
516
aa5e18c0
SC		 517void
518qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
519
520 int timeo;
521
522 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
523 timeo = 30;
524
525 adapter->dev_init_timeo = timeo;
526
527 if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
528 timeo = 10;
529
530 adapter->reset_ack_timeo = timeo;
531}
532
af19b491
AKS		 533static int
534qlcnic_has_mn(struct qlcnic_adapter *adapter)
535{
536 u32 capability, flashed_ver;
537 capability = 0;
538
539 qlcnic_rom_fast_read(adapter,
540 QLCNIC_FW_VERSION_OFFSET, (int *)&flashed_ver);
541 flashed_ver = QLCNIC_DECODE_VERSION(flashed_ver);
542
251a84c9
AKS		 543 capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
544 if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
545 return 1;
af19b491 546
af19b491
AKS		 547 return 0;
548}
549
550static
551struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
552{
553 u32 i;
554 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
555 __le32 entries = cpu_to_le32(directory->num_entries);
556
557 for (i = 0; i < entries; i++) {
558
559 __le32 offs = cpu_to_le32(directory->findex) +
560 (i * cpu_to_le32(directory->entry_size));
561 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
562
563 if (tab_type == section)
564 return (struct uni_table_desc *) &unirom[offs];
565 }
566
567 return NULL;
568}
569
b7eff100
SC		 570#define FILEHEADER_SIZE (14 * 4)
571
af19b491 572static int
b7eff100 573qlcnic_validate_header(struct qlcnic_adapter *adapter)
af19b491 574{
af19b491 575 const u8 *unirom = adapter->fw->data;
b7eff100
SC		 576 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
577 __le32 fw_file_size = adapter->fw->size;
af19b491 578 __le32 entries;
b7eff100
SC		 579 __le32 entry_size;
580 __le32 tab_size;
581
582 if (fw_file_size < FILEHEADER_SIZE)
583 return -EINVAL;
584
585 entries = cpu_to_le32(directory->num_entries);
586 entry_size = cpu_to_le32(directory->entry_size);
587 tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
588
589 if (fw_file_size < tab_size)
590 return -EINVAL;
591
592 return 0;
593}
594
595static int
596qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
597{
598 struct uni_table_desc *tab_desc;
599 struct uni_data_desc *descr;
600 const u8 *unirom = adapter->fw->data;
601 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
602 QLCNIC_UNI_BOOTLD_IDX_OFF));
603 __le32 offs;
604 __le32 tab_size;
605 __le32 data_size;
606
607 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
608
609 if (!tab_desc)
610 return -EINVAL;
611
612 tab_size = cpu_to_le32(tab_desc->findex) +
22dfaa86 613 (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
b7eff100
SC		 614
615 if (adapter->fw->size < tab_size)
616 return -EINVAL;
617
618 offs = cpu_to_le32(tab_desc->findex) +
619 (cpu_to_le32(tab_desc->entry_size) * (idx));
620 descr = (struct uni_data_desc *)&unirom[offs];
621
22dfaa86 622 data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
b7eff100
SC		 623
624 if (adapter->fw->size < data_size)
625 return -EINVAL;
626
627 return 0;
628}
629
630static int
631qlcnic_validate_fw(struct qlcnic_adapter *adapter)
632{
633 struct uni_table_desc *tab_desc;
634 struct uni_data_desc *descr;
635 const u8 *unirom = adapter->fw->data;
636 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
637 QLCNIC_UNI_FIRMWARE_IDX_OFF));
638 __le32 offs;
639 __le32 tab_size;
640 __le32 data_size;
641
642 tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
643
644 if (!tab_desc)
645 return -EINVAL;
646
647 tab_size = cpu_to_le32(tab_desc->findex) +
22dfaa86 648 (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
b7eff100
SC		 649
650 if (adapter->fw->size < tab_size)
651 return -EINVAL;
652
653 offs = cpu_to_le32(tab_desc->findex) +
654 (cpu_to_le32(tab_desc->entry_size) * (idx));
655 descr = (struct uni_data_desc *)&unirom[offs];
22dfaa86 656 data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
b7eff100
SC		 657
658 if (adapter->fw->size < data_size)
659 return -EINVAL;
660
661 return 0;
662}
663
664static int
665qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
666{
667 struct uni_table_desc *ptab_descr;
668 const u8 *unirom = adapter->fw->data;
af19b491 669 int mn_present = qlcnic_has_mn(adapter);
b7eff100
SC		 670 __le32 entries;
671 __le32 entry_size;
672 __le32 tab_size;
673 u32 i;
af19b491
AKS		 674
675 ptab_descr = qlcnic_get_table_desc(unirom,
676 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
b7eff100
SC		 677 if (!ptab_descr)
678 return -EINVAL;
af19b491
AKS		 679
680 entries = cpu_to_le32(ptab_descr->num_entries);
b7eff100
SC		 681 entry_size = cpu_to_le32(ptab_descr->entry_size);
682 tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
683
684 if (adapter->fw->size < tab_size)
685 return -EINVAL;
686
af19b491
AKS		 687nomn:
688 for (i = 0; i < entries; i++) {
689
690 __le32 flags, file_chiprev, offs;
691 u8 chiprev = adapter->ahw.revision_id;
692 u32 flagbit;
693
694 offs = cpu_to_le32(ptab_descr->findex) +
695 (i * cpu_to_le32(ptab_descr->entry_size));
696 flags = cpu_to_le32(*((int *)&unirom[offs] +
697 QLCNIC_UNI_FLAGS_OFF));
698 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
699 QLCNIC_UNI_CHIP_REV_OFF));
700
701 flagbit = mn_present ? 1 : 2;
702
703 if ((chiprev == file_chiprev) &&
704 ((1ULL << flagbit) & flags)) {
705 adapter->file_prd_off = offs;
706 return 0;
707 }
708 }
709 if (mn_present) {
710 mn_present = 0;
711 goto nomn;
712 }
b7eff100
SC		 713 return -EINVAL;
714}
715
716static int
717qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
718{
719 if (qlcnic_validate_header(adapter)) {
720 dev_err(&adapter->pdev->dev,
721 "unified image: header validation failed\n");
722 return -EINVAL;
723 }
724
725 if (qlcnic_validate_product_offs(adapter)) {
726 dev_err(&adapter->pdev->dev,
727 "unified image: product validation failed\n");
728 return -EINVAL;
729 }
730
731 if (qlcnic_validate_bootld(adapter)) {
732 dev_err(&adapter->pdev->dev,
733 "unified image: bootld validation failed\n");
734 return -EINVAL;
735 }
736
737 if (qlcnic_validate_fw(adapter)) {
738 dev_err(&adapter->pdev->dev,
739 "unified image: firmware validation failed\n");
740 return -EINVAL;
741 }
742
743 return 0;
af19b491
AKS		 744}
745
746static
747struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
748 u32 section, u32 idx_offset)
749{
750 const u8 *unirom = adapter->fw->data;
751 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
752 idx_offset));
753 struct uni_table_desc *tab_desc;
754 __le32 offs;
755
756 tab_desc = qlcnic_get_table_desc(unirom, section);
757
758 if (tab_desc == NULL)
759 return NULL;
760
761 offs = cpu_to_le32(tab_desc->findex) +
762 (cpu_to_le32(tab_desc->entry_size) * idx);
763
764 return (struct uni_data_desc *)&unirom[offs];
765}
766
767static u8 *
768qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
769{
770 u32 offs = QLCNIC_BOOTLD_START;
771
772 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
773 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
774 QLCNIC_UNI_DIR_SECT_BOOTLD,
775 QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
776
777 return (u8 *)&adapter->fw->data[offs];
778}
779
780static u8 *
781qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
782{
783 u32 offs = QLCNIC_IMAGE_START;
784
785 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
786 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
787 QLCNIC_UNI_DIR_SECT_FW,
788 QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
789
790 return (u8 *)&adapter->fw->data[offs];
791}
792
793static __le32
794qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
795{
796 if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
797 return cpu_to_le32((qlcnic_get_data_desc(adapter,
798 QLCNIC_UNI_DIR_SECT_FW,
799 QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
800 else
801 return cpu_to_le32(
802 *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
803}
804
805static __le32
806qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
807{
808 struct uni_data_desc *fw_data_desc;
809 const struct firmware *fw = adapter->fw;
810 __le32 major, minor, sub;
811 const u8 *ver_str;
812 int i, ret;
813
814 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
815 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
816
817 fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
818 QLCNIC_UNI_FIRMWARE_IDX_OFF);
819 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
820 cpu_to_le32(fw_data_desc->size) - 17;
821
822 for (i = 0; i < 12; i++) {
823 if (!strncmp(&ver_str[i], "REV=", 4)) {
824 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
825 &major, &minor, &sub);
826 if (ret != 3)
827 return 0;
828 else
829 return major + (minor << 8) + (sub << 16);
830 }
831 }
832
833 return 0;
834}
835
836static __le32
837qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
838{
839 const struct firmware *fw = adapter->fw;
840 __le32 bios_ver, prd_off = adapter->file_prd_off;
841
842 if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
843 return cpu_to_le32(
844 *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
845
846 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
847 + QLCNIC_UNI_BIOS_VERSION_OFF));
848
addd5abf 849 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
af19b491
AKS		 850}
851
852int
853qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
854{
855 u32 count, old_count;
856 u32 val, version, major, minor, build;
857 int i, timeout;
858
859 if (adapter->need_fw_reset)
860 return 1;
861
862 /* last attempt had failed */
863 if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
864 return 1;
865
866 old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
867
868 for (i = 0; i < 10; i++) {
869
870 timeout = msleep_interruptible(200);
871 if (timeout) {
872 QLCWR32(adapter, CRB_CMDPEG_STATE,
873 PHAN_INITIALIZE_FAILED);
874 return -EINTR;
875 }
876
877 count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
878 if (count != old_count)
879 break;
880 }
881
882 /* firmware is dead */
883 if (count == old_count)
884 return 1;
885
886 /* check if we have got newer or different file firmware */
887 if (adapter->fw) {
888
889 val = qlcnic_get_fw_version(adapter);
890
891 version = QLCNIC_DECODE_VERSION(val);
892
893 major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
894 minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
895 build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
896
897 if (version > QLCNIC_VERSION_CODE(major, minor, build))
898 return 1;
899 }
900
901 return 0;
902}
903
904static const char *fw_name[] = {
905 QLCNIC_UNIFIED_ROMIMAGE_NAME,
906 QLCNIC_FLASH_ROMIMAGE_NAME,
907};
908
909int
910qlcnic_load_firmware(struct qlcnic_adapter *adapter)
911{
912 u64 *ptr64;
913 u32 i, flashaddr, size;
914 const struct firmware *fw = adapter->fw;
915 struct pci_dev *pdev = adapter->pdev;
916
917 dev_info(&pdev->dev, "loading firmware from %s\n",
918 fw_name[adapter->fw_type]);
919
920 if (fw) {
921 __le64 data;
922
923 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
924
925 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
926 flashaddr = QLCNIC_BOOTLD_START;
927
928 for (i = 0; i < size; i++) {
929 data = cpu_to_le64(ptr64[i]);
930
931 if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
932 return -EIO;
933
934 flashaddr += 8;
935 }
936
937 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
938
939 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
940 flashaddr = QLCNIC_IMAGE_START;
941
942 for (i = 0; i < size; i++) {
943 data = cpu_to_le64(ptr64[i]);
944
945 if (qlcnic_pci_mem_write_2M(adapter,
946 flashaddr, data))
947 return -EIO;
948
949 flashaddr += 8;
950 }
0bc92b5b
AKS		 951
952 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
953 if (size) {
954 data = cpu_to_le64(ptr64[i]);
955
956 if (qlcnic_pci_mem_write_2M(adapter,
957 flashaddr, data))
958 return -EIO;
959 }
960
af19b491
AKS		 961 } else {
962 u64 data;
963 u32 hi, lo;
964
965 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
966 flashaddr = QLCNIC_BOOTLD_START;
967
968 for (i = 0; i < size; i++) {
969 if (qlcnic_rom_fast_read(adapter,
970 flashaddr, (int *)&lo) != 0)
971 return -EIO;
972 if (qlcnic_rom_fast_read(adapter,
973 flashaddr + 4, (int *)&hi) != 0)
974 return -EIO;
975
976 data = (((u64)hi << 32) | lo);
977
978 if (qlcnic_pci_mem_write_2M(adapter,
979 flashaddr, data))
980 return -EIO;
981
982 flashaddr += 8;
983 }
984 }
985 msleep(1);
986
987 QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
988 QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
989 return 0;
990}
991
992static int
993qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
994{
995 __le32 val;
996 u32 ver, min_ver, bios, min_size;
997 struct pci_dev *pdev = adapter->pdev;
998 const struct firmware *fw = adapter->fw;
999 u8 fw_type = adapter->fw_type;
1000
1001 if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
b7eff100 1002 if (qlcnic_validate_unified_romimage(adapter))
af19b491
AKS		 1003 return -EINVAL;
1004
1005 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1006 } else {
1007 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1008 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1009 return -EINVAL;
1010
1011 min_size = QLCNIC_FW_MIN_SIZE;
1012 }
1013
1014 if (fw->size < min_size)
1015 return -EINVAL;
1016
1017 val = qlcnic_get_fw_version(adapter);
1018
1019 min_ver = QLCNIC_VERSION_CODE(4, 0, 216);
1020
1021 ver = QLCNIC_DECODE_VERSION(val);
1022
1023 if ((_major(ver) > _QLCNIC_LINUX_MAJOR) || (ver < min_ver)) {
1024 dev_err(&pdev->dev,
1025 "%s: firmware version %d.%d.%d unsupported\n",
1026 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1027 return -EINVAL;
1028 }
1029
1030 val = qlcnic_get_bios_version(adapter);
1031 qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1032 if ((__force u32)val != bios) {
1033 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1034 fw_name[fw_type]);
1035 return -EINVAL;
1036 }
1037
1038 /* check if flashed firmware is newer */
1039 if (qlcnic_rom_fast_read(adapter,
1040 QLCNIC_FW_VERSION_OFFSET, (int *)&val))
1041 return -EIO;
1042
1043 val = QLCNIC_DECODE_VERSION(val);
1044 if (val > ver) {
1045 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1046 fw_name[fw_type]);
1047 return -EINVAL;
1048 }
1049
1050 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1051 return 0;
1052}
1053
1054static void
1055qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1056{
1057 u8 fw_type;
1058
1059 switch (adapter->fw_type) {
1060 case QLCNIC_UNKNOWN_ROMIMAGE:
1061 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1062 break;
1063
1064 case QLCNIC_UNIFIED_ROMIMAGE:
1065 default:
1066 fw_type = QLCNIC_FLASH_ROMIMAGE;
1067 break;
1068 }
1069
1070 adapter->fw_type = fw_type;
1071}
1072
1073
1074
1075void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1076{
1077 struct pci_dev *pdev = adapter->pdev;
1078 int rc;
1079
1080 adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1081
1082next:
1083 qlcnic_get_next_fwtype(adapter);
1084
1085 if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1086 adapter->fw = NULL;
1087 } else {
1088 rc = request_firmware(&adapter->fw,
1089 fw_name[adapter->fw_type], &pdev->dev);
1090 if (rc != 0)
1091 goto next;
1092
1093 rc = qlcnic_validate_firmware(adapter);
1094 if (rc != 0) {
1095 release_firmware(adapter->fw);
1096 msleep(1);
1097 goto next;
1098 }
1099 }
1100}
1101
1102
1103void
1104qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1105{
1106 if (adapter->fw)
1107 release_firmware(adapter->fw);
1108 adapter->fw = NULL;
1109}
1110
1111int qlcnic_phantom_init(struct qlcnic_adapter *adapter)
1112{
1113 u32 val;
1114 int retries = 60;
1115
1116 do {
1117 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
1118
1119 switch (val) {
1120 case PHAN_INITIALIZE_COMPLETE:
1121 case PHAN_INITIALIZE_ACK:
1122 return 0;
1123 case PHAN_INITIALIZE_FAILED:
1124 goto out_err;
1125 default:
1126 break;
1127 }
1128
1129 msleep(500);
1130
1131 } while (--retries);
1132
1133 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1134
1135out_err:
1136 dev_err(&adapter->pdev->dev, "firmware init failed\n");
1137 return -EIO;
1138}
1139
1140static int
1141qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
1142{
1143 u32 val;
1144 int retries = 2000;
1145
1146 do {
1147 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
1148
1149 if (val == PHAN_PEG_RCV_INITIALIZED)
1150 return 0;
1151
1152 msleep(10);
1153
1154 } while (--retries);
1155
1156 if (!retries) {
1157 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
1158 "complete, state: 0x%x.\n", val);
1159 return -EIO;
1160 }
1161
1162 return 0;
1163}
1164
1165int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
1166{
1167 int err;
1168
1169 err = qlcnic_receive_peg_ready(adapter);
1170 if (err)
1171 return err;
1172
1173 QLCWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
af19b491
AKS		 1174 QLCWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1175 QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1176
1177 return err;
1178}
1179
1180static void
1181qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1182 struct qlcnic_fw_msg *msg)
1183{
1184 u32 cable_OUI;
1185 u16 cable_len;
1186 u16 link_speed;
1187 u8 link_status, module, duplex, autoneg;
1188 struct net_device *netdev = adapter->netdev;
1189
1190 adapter->has_link_events = 1;
1191
1192 cable_OUI = msg->body[1] & 0xffffffff;
1193 cable_len = (msg->body[1] >> 32) & 0xffff;
1194 link_speed = (msg->body[1] >> 48) & 0xffff;
1195
1196 link_status = msg->body[2] & 0xff;
1197 duplex = (msg->body[2] >> 16) & 0xff;
1198 autoneg = (msg->body[2] >> 24) & 0xff;
1199
1200 module = (msg->body[2] >> 8) & 0xff;
1201 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1202 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1203 "length %d\n", cable_OUI, cable_len);
1204 else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1205 dev_info(&netdev->dev, "unsupported cable length %d\n",
1206 cable_len);
1207
1208 qlcnic_advert_link_change(adapter, link_status);
1209
1210 if (duplex == LINKEVENT_FULL_DUPLEX)
1211 adapter->link_duplex = DUPLEX_FULL;
1212 else
1213 adapter->link_duplex = DUPLEX_HALF;
1214
1215 adapter->module_type = module;
1216 adapter->link_autoneg = autoneg;
1217 adapter->link_speed = link_speed;
1218}
1219
1220static void
1221qlcnic_handle_fw_message(int desc_cnt, int index,
1222 struct qlcnic_host_sds_ring *sds_ring)
1223{
1224 struct qlcnic_fw_msg msg;
1225 struct status_desc *desc;
1226 int i = 0, opcode;
1227
1228 while (desc_cnt > 0 && i < 8) {
1229 desc = &sds_ring->desc_head[index];
1230 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1231 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1232
1233 index = get_next_index(index, sds_ring->num_desc);
1234 desc_cnt--;
1235 }
1236
1237 opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1238 switch (opcode) {
1239 case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1240 qlcnic_handle_linkevent(sds_ring->adapter, &msg);
1241 break;
1242 default:
1243 break;
1244 }
1245}
1246
1247static int
1248qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1249 struct qlcnic_host_rds_ring *rds_ring,
1250 struct qlcnic_rx_buffer *buffer)
1251{
1252 struct sk_buff *skb;
1253 dma_addr_t dma;
1254 struct pci_dev *pdev = adapter->pdev;
1255
1256 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
8bfe8b91
SC		 1257 if (!buffer->skb) {
1258 adapter->stats.skb_alloc_failure++;
af19b491 1259 return -ENOMEM;
8bfe8b91 1260 }
af19b491
AKS		 1261
1262 skb = buffer->skb;
1263
251a84c9 1264 skb_reserve(skb, 2);
af19b491
AKS		 1265
1266 dma = pci_map_single(pdev, skb->data,
1267 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1268
1269 if (pci_dma_mapping_error(pdev, dma)) {
8ae6df97 1270 adapter->stats.rx_dma_map_error++;
af19b491
AKS		 1271 dev_kfree_skb_any(skb);
1272 buffer->skb = NULL;
1273 return -ENOMEM;
1274 }
1275
1276 buffer->skb = skb;
1277 buffer->dma = dma;
1278 buffer->state = QLCNIC_BUFFER_BUSY;
1279
1280 return 0;
1281}
1282
1283static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1284 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1285{
1286 struct qlcnic_rx_buffer *buffer;
1287 struct sk_buff *skb;
1288
1289 buffer = &rds_ring->rx_buf_arr[index];
1290
1291 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1292 PCI_DMA_FROMDEVICE);
1293
1294 skb = buffer->skb;
8ae6df97
AKS		 1295 if (!skb) {
1296 adapter->stats.null_skb++;
af19b491 1297 goto no_skb;
8ae6df97 1298 }
af19b491
AKS		 1299
1300 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1301 adapter->stats.csummed++;
1302 skb->ip_summed = CHECKSUM_UNNECESSARY;
1303 } else {
1304 skb->ip_summed = CHECKSUM_NONE;
1305 }
1306
1307 skb->dev = adapter->netdev;
1308
1309 buffer->skb = NULL;
1310no_skb:
1311 buffer->state = QLCNIC_BUFFER_FREE;
1312 return skb;
1313}
1314
1315static struct qlcnic_rx_buffer *
1316qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1317 struct qlcnic_host_sds_ring *sds_ring,
1318 int ring, u64 sts_data0)
1319{
1320 struct net_device *netdev = adapter->netdev;
1321 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1322 struct qlcnic_rx_buffer *buffer;
1323 struct sk_buff *skb;
1324 struct qlcnic_host_rds_ring *rds_ring;
1325 int index, length, cksum, pkt_offset;
1326
1327 if (unlikely(ring >= adapter->max_rds_rings))
1328 return NULL;
1329
1330 rds_ring = &recv_ctx->rds_rings[ring];
1331
1332 index = qlcnic_get_sts_refhandle(sts_data0);
1333 if (unlikely(index >= rds_ring->num_desc))
1334 return NULL;
1335
1336 buffer = &rds_ring->rx_buf_arr[index];
1337
1338 length = qlcnic_get_sts_totallength(sts_data0);
1339 cksum = qlcnic_get_sts_status(sts_data0);
1340 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1341
1342 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1343 if (!skb)
1344 return buffer;
1345
1346 if (length > rds_ring->skb_size)
1347 skb_put(skb, rds_ring->skb_size);
1348 else
1349 skb_put(skb, length);
1350
1351 if (pkt_offset)
1352 skb_pull(skb, pkt_offset);
1353
1354 skb->truesize = skb->len + sizeof(struct sk_buff);
1355 skb->protocol = eth_type_trans(skb, netdev);
1356
1357 napi_gro_receive(&sds_ring->napi, skb);
1358
1359 adapter->stats.rx_pkts++;
1360 adapter->stats.rxbytes += length;
1361
1362 return buffer;
1363}
1364
1365#define QLC_TCP_HDR_SIZE 20
1366#define QLC_TCP_TS_OPTION_SIZE 12
1367#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1368
1369static struct qlcnic_rx_buffer *
1370qlcnic_process_lro(struct qlcnic_adapter *adapter,
1371 struct qlcnic_host_sds_ring *sds_ring,
1372 int ring, u64 sts_data0, u64 sts_data1)
1373{
1374 struct net_device *netdev = adapter->netdev;
1375 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1376 struct qlcnic_rx_buffer *buffer;
1377 struct sk_buff *skb;
1378 struct qlcnic_host_rds_ring *rds_ring;
1379 struct iphdr *iph;
1380 struct tcphdr *th;
1381 bool push, timestamp;
1382 int l2_hdr_offset, l4_hdr_offset;
1383 int index;
1384 u16 lro_length, length, data_offset;
1385 u32 seq_number;
1386
1387 if (unlikely(ring > adapter->max_rds_rings))
1388 return NULL;
1389
1390 rds_ring = &recv_ctx->rds_rings[ring];
1391
1392 index = qlcnic_get_lro_sts_refhandle(sts_data0);
1393 if (unlikely(index > rds_ring->num_desc))
1394 return NULL;
1395
1396 buffer = &rds_ring->rx_buf_arr[index];
1397
1398 timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1399 lro_length = qlcnic_get_lro_sts_length(sts_data0);
1400 l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1401 l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1402 push = qlcnic_get_lro_sts_push_flag(sts_data0);
1403 seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1404
1405 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1406 if (!skb)
1407 return buffer;
1408
1409 if (timestamp)
1410 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1411 else
1412 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1413
1414 skb_put(skb, lro_length + data_offset);
1415
1416 skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1417
1418 skb_pull(skb, l2_hdr_offset);
1419 skb->protocol = eth_type_trans(skb, netdev);
1420
1421 iph = (struct iphdr *)skb->data;
1422 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1423
1424 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1425 iph->tot_len = htons(length);
1426 iph->check = 0;
1427 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1428 th->psh = push;
1429 th->seq = htonl(seq_number);
1430
1431 length = skb->len;
1432
1433 netif_receive_skb(skb);
1434
1435 adapter->stats.lro_pkts++;
8bfe8b91 1436 adapter->stats.lrobytes += length;
af19b491
AKS		 1437
1438 return buffer;
1439}
1440
1441int
1442qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1443{
1444 struct qlcnic_adapter *adapter = sds_ring->adapter;
1445 struct list_head *cur;
1446 struct status_desc *desc;
1447 struct qlcnic_rx_buffer *rxbuf;
1448 u64 sts_data0, sts_data1;
1449
1450 int count = 0;
1451 int opcode, ring, desc_cnt;
1452 u32 consumer = sds_ring->consumer;
1453
1454 while (count < max) {
1455 desc = &sds_ring->desc_head[consumer];
1456 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1457
1458 if (!(sts_data0 & STATUS_OWNER_HOST))
1459 break;
1460
1461 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1462 opcode = qlcnic_get_sts_opcode(sts_data0);
1463
1464 switch (opcode) {
1465 case QLCNIC_RXPKT_DESC:
1466 case QLCNIC_OLD_RXPKT_DESC:
1467 case QLCNIC_SYN_OFFLOAD:
1468 ring = qlcnic_get_sts_type(sts_data0);
1469 rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1470 ring, sts_data0);
1471 break;
1472 case QLCNIC_LRO_DESC:
1473 ring = qlcnic_get_lro_sts_type(sts_data0);
1474 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1475 rxbuf = qlcnic_process_lro(adapter, sds_ring,
1476 ring, sts_data0, sts_data1);
1477 break;
1478 case QLCNIC_RESPONSE_DESC:
1479 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1480 default:
1481 goto skip;
1482 }
1483
1484 WARN_ON(desc_cnt > 1);
1485
1486 if (rxbuf)
1487 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
8ae6df97
AKS		 1488 else
1489 adapter->stats.null_rxbuf++;
af19b491
AKS		 1490
1491skip:
1492 for (; desc_cnt > 0; desc_cnt--) {
1493 desc = &sds_ring->desc_head[consumer];
1494 desc->status_desc_data[0] =
1495 cpu_to_le64(STATUS_OWNER_PHANTOM);
1496 consumer = get_next_index(consumer, sds_ring->num_desc);
1497 }
1498 count++;
1499 }
1500
1501 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1502 struct qlcnic_host_rds_ring *rds_ring =
1503 &adapter->recv_ctx.rds_rings[ring];
1504
1505 if (!list_empty(&sds_ring->free_list[ring])) {
1506 list_for_each(cur, &sds_ring->free_list[ring]) {
1507 rxbuf = list_entry(cur,
1508 struct qlcnic_rx_buffer, list);
1509 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1510 }
1511 spin_lock(&rds_ring->lock);
1512 list_splice_tail_init(&sds_ring->free_list[ring],
1513 &rds_ring->free_list);
1514 spin_unlock(&rds_ring->lock);
1515 }
1516
1517 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1518 }
1519
1520 if (count) {
1521 sds_ring->consumer = consumer;
1522 writel(consumer, sds_ring->crb_sts_consumer);
1523 }
1524
1525 return count;
1526}
1527
1528void
1529qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
1530 struct qlcnic_host_rds_ring *rds_ring)
1531{
1532 struct rcv_desc *pdesc;
1533 struct qlcnic_rx_buffer *buffer;
1534 int producer, count = 0;
1535 struct list_head *head;
1536
ed6f1353
AKS		 1537 spin_lock(&rds_ring->lock);
1538
af19b491
AKS		 1539 producer = rds_ring->producer;
1540
af19b491
AKS		 1541 head = &rds_ring->free_list;
1542 while (!list_empty(head)) {
1543
1544 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1545
1546 if (!buffer->skb) {
1547 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1548 break;
1549 }
1550
1551 count++;
1552 list_del(&buffer->list);
1553
1554 /* make a rcv descriptor */
1555 pdesc = &rds_ring->desc_head[producer];
1556 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1557 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1558 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1559
1560 producer = get_next_index(producer, rds_ring->num_desc);
1561 }
af19b491
AKS		 1562
1563 if (count) {
1564 rds_ring->producer = producer;
1565 writel((producer-1) & (rds_ring->num_desc-1),
1566 rds_ring->crb_rcv_producer);
1567 }
ed6f1353 1568 spin_unlock(&rds_ring->lock);
af19b491
AKS		 1569}
1570
1571static void
1572qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1573 struct qlcnic_host_rds_ring *rds_ring)
1574{
1575 struct rcv_desc *pdesc;
1576 struct qlcnic_rx_buffer *buffer;
1577 int producer, count = 0;
1578 struct list_head *head;
1579
af19b491
AKS		 1580 if (!spin_trylock(&rds_ring->lock))
1581 return;
1582
ed6f1353
AKS		 1583 producer = rds_ring->producer;
1584
af19b491
AKS		 1585 head = &rds_ring->free_list;
1586 while (!list_empty(head)) {
1587
1588 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1589
1590 if (!buffer->skb) {
1591 if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1592 break;
1593 }
1594
1595 count++;
1596 list_del(&buffer->list);
1597
1598 /* make a rcv descriptor */
1599 pdesc = &rds_ring->desc_head[producer];
1600 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1601 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1602 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1603
1604 producer = get_next_index(producer, rds_ring->num_desc);
1605 }
1606
1607 if (count) {
1608 rds_ring->producer = producer;
1609 writel((producer - 1) & (rds_ring->num_desc - 1),
1610 rds_ring->crb_rcv_producer);
1611 }
1612 spin_unlock(&rds_ring->lock);
1613}
1614
cdaff185
AKS		 1615static struct qlcnic_rx_buffer *
1616qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1617 struct qlcnic_host_sds_ring *sds_ring,
1618 int ring, u64 sts_data0)
1619{
1620 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1621 struct qlcnic_rx_buffer *buffer;
1622 struct sk_buff *skb;
1623 struct qlcnic_host_rds_ring *rds_ring;
1624 int index, length, cksum, pkt_offset;
1625
1626 if (unlikely(ring >= adapter->max_rds_rings))
1627 return NULL;
1628
1629 rds_ring = &recv_ctx->rds_rings[ring];
1630
1631 index = qlcnic_get_sts_refhandle(sts_data0);
1632 if (unlikely(index >= rds_ring->num_desc))
1633 return NULL;
1634
1635 buffer = &rds_ring->rx_buf_arr[index];
1636
1637 length = qlcnic_get_sts_totallength(sts_data0);
1638 cksum = qlcnic_get_sts_status(sts_data0);
1639 pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1640
1641 skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1642 if (!skb)
1643 return buffer;
1644
1645 skb_put(skb, rds_ring->skb_size);
1646
1647 if (pkt_offset)
1648 skb_pull(skb, pkt_offset);
1649
1650 skb->truesize = skb->len + sizeof(struct sk_buff);
1651
1652 if (!qlcnic_check_loopback_buff(skb->data))
1653 adapter->diag_cnt++;
1654
1655 dev_kfree_skb_any(skb);
8bfe8b91
SC		 1656 adapter->stats.rx_pkts++;
1657 adapter->stats.rxbytes += length;
cdaff185
AKS		 1658
1659 return buffer;
1660}
1661
1662void
1663qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1664{
1665 struct qlcnic_adapter *adapter = sds_ring->adapter;
1666 struct status_desc *desc;
1667 struct qlcnic_rx_buffer *rxbuf;
1668 u64 sts_data0;
1669
1670 int opcode, ring, desc_cnt;
1671 u32 consumer = sds_ring->consumer;
1672
1673 desc = &sds_ring->desc_head[consumer];
1674 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1675
1676 if (!(sts_data0 & STATUS_OWNER_HOST))
1677 return;
1678
1679 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1680 opcode = qlcnic_get_sts_opcode(sts_data0);
1681
1682 ring = qlcnic_get_sts_type(sts_data0);
1683 rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring,
1684 ring, sts_data0);
1685
1686 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1687 consumer = get_next_index(consumer, sds_ring->num_desc);
1688
1689 sds_ring->consumer = consumer;
1690 writel(consumer, sds_ring->crb_sts_consumer);
1691}
Clone of davem's net-next-2.6 tree