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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / net / netxen / netxen_nic_init.c
blob7eb925a9f36e3ed6d558841659d02b812b790dd6
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called "COPYING".
23 *
24 */
25
26 #include <linux/netdevice.h>
27 #include <linux/delay.h>
28 #include "netxen_nic.h"
29 #include "netxen_nic_hw.h"
30
31 struct crb_addr_pair {
32 u32 addr;
33 u32 data;
34 };
35
36 #define NETXEN_MAX_CRB_XFORM 60
37 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
38 #define NETXEN_ADDR_ERROR (0xffffffff)
39
40 #define crb_addr_transform(name) \
41 crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
42 NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
43
44 #define NETXEN_NIC_XDMA_RESET 0x8000ff
45
46 static void
47 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
48 struct nx_host_rds_ring *rds_ring);
49 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
50
51 static void crb_addr_transform_setup(void)
52 {
53 crb_addr_transform(XDMA);
54 crb_addr_transform(TIMR);
55 crb_addr_transform(SRE);
56 crb_addr_transform(SQN3);
57 crb_addr_transform(SQN2);
58 crb_addr_transform(SQN1);
59 crb_addr_transform(SQN0);
60 crb_addr_transform(SQS3);
61 crb_addr_transform(SQS2);
62 crb_addr_transform(SQS1);
63 crb_addr_transform(SQS0);
64 crb_addr_transform(RPMX7);
65 crb_addr_transform(RPMX6);
66 crb_addr_transform(RPMX5);
67 crb_addr_transform(RPMX4);
68 crb_addr_transform(RPMX3);
69 crb_addr_transform(RPMX2);
70 crb_addr_transform(RPMX1);
71 crb_addr_transform(RPMX0);
72 crb_addr_transform(ROMUSB);
73 crb_addr_transform(SN);
74 crb_addr_transform(QMN);
75 crb_addr_transform(QMS);
76 crb_addr_transform(PGNI);
77 crb_addr_transform(PGND);
78 crb_addr_transform(PGN3);
79 crb_addr_transform(PGN2);
80 crb_addr_transform(PGN1);
81 crb_addr_transform(PGN0);
82 crb_addr_transform(PGSI);
83 crb_addr_transform(PGSD);
84 crb_addr_transform(PGS3);
85 crb_addr_transform(PGS2);
86 crb_addr_transform(PGS1);
87 crb_addr_transform(PGS0);
88 crb_addr_transform(PS);
89 crb_addr_transform(PH);
90 crb_addr_transform(NIU);
91 crb_addr_transform(I2Q);
92 crb_addr_transform(EG);
93 crb_addr_transform(MN);
94 crb_addr_transform(MS);
95 crb_addr_transform(CAS2);
96 crb_addr_transform(CAS1);
97 crb_addr_transform(CAS0);
98 crb_addr_transform(CAM);
99 crb_addr_transform(C2C1);
100 crb_addr_transform(C2C0);
101 crb_addr_transform(SMB);
102 crb_addr_transform(OCM0);
103 crb_addr_transform(I2C0);
104 }
105
106 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
107 {
108 struct netxen_recv_context *recv_ctx;
109 struct nx_host_rds_ring *rds_ring;
110 struct netxen_rx_buffer *rx_buf;
111 int i, ring;
112
113 recv_ctx = &adapter->recv_ctx;
114 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
115 rds_ring = &recv_ctx->rds_rings[ring];
116 for (i = 0; i < rds_ring->num_desc; ++i) {
117 rx_buf = &(rds_ring->rx_buf_arr[i]);
118 if (rx_buf->state == NETXEN_BUFFER_FREE)
119 continue;
120 pci_unmap_single(adapter->pdev,
121 rx_buf->dma,
122 rds_ring->dma_size,
123 PCI_DMA_FROMDEVICE);
124 if (rx_buf->skb != NULL)
125 dev_kfree_skb_any(rx_buf->skb);
126 }
127 }
128 }
129
130 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
131 {
132 struct netxen_cmd_buffer *cmd_buf;
133 struct netxen_skb_frag *buffrag;
134 int i, j;
135 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
136
137 cmd_buf = tx_ring->cmd_buf_arr;
138 for (i = 0; i < tx_ring->num_desc; i++) {
139 buffrag = cmd_buf->frag_array;
140 if (buffrag->dma) {
141 pci_unmap_single(adapter->pdev, buffrag->dma,
142 buffrag->length, PCI_DMA_TODEVICE);
143 buffrag->dma = 0ULL;
144 }
145 for (j = 0; j < cmd_buf->frag_count; j++) {
146 buffrag++;
147 if (buffrag->dma) {
148 pci_unmap_page(adapter->pdev, buffrag->dma,
149 buffrag->length,
150 PCI_DMA_TODEVICE);
151 buffrag->dma = 0ULL;
152 }
153 }
154 if (cmd_buf->skb) {
155 dev_kfree_skb_any(cmd_buf->skb);
156 cmd_buf->skb = NULL;
157 }
158 cmd_buf++;
159 }
160 }
161
162 void netxen_free_sw_resources(struct netxen_adapter *adapter)
163 {
164 struct netxen_recv_context *recv_ctx;
165 struct nx_host_rds_ring *rds_ring;
166 struct nx_host_tx_ring *tx_ring;
167 int ring;
168
169 recv_ctx = &adapter->recv_ctx;
170
171 if (recv_ctx->rds_rings == NULL)
172 goto skip_rds;
173
174 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
175 rds_ring = &recv_ctx->rds_rings[ring];
176 vfree(rds_ring->rx_buf_arr);
177 rds_ring->rx_buf_arr = NULL;
178 }
179 kfree(recv_ctx->rds_rings);
180
181 skip_rds:
182 if (adapter->tx_ring == NULL)
183 return;
184
185 tx_ring = adapter->tx_ring;
186 vfree(tx_ring->cmd_buf_arr);
187 kfree(tx_ring);
188 adapter->tx_ring = NULL;
189 }
190
191 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
192 {
193 struct netxen_recv_context *recv_ctx;
194 struct nx_host_rds_ring *rds_ring;
195 struct nx_host_sds_ring *sds_ring;
196 struct nx_host_tx_ring *tx_ring;
197 struct netxen_rx_buffer *rx_buf;
198 int ring, i, size;
199
200 struct netxen_cmd_buffer *cmd_buf_arr;
201 struct net_device *netdev = adapter->netdev;
202 struct pci_dev *pdev = adapter->pdev;
203
204 size = sizeof(struct nx_host_tx_ring);
205 tx_ring = kzalloc(size, GFP_KERNEL);
206 if (tx_ring == NULL) {
207 dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
208 netdev->name);
209 return -ENOMEM;
210 }
211 adapter->tx_ring = tx_ring;
212
213 tx_ring->num_desc = adapter->num_txd;
214 tx_ring->txq = netdev_get_tx_queue(netdev, 0);
215
216 cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
217 if (cmd_buf_arr == NULL) {
218 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
219 netdev->name);
220 return -ENOMEM;
221 }
222 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
223 tx_ring->cmd_buf_arr = cmd_buf_arr;
224
225 recv_ctx = &adapter->recv_ctx;
226
227 size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
228 rds_ring = kzalloc(size, GFP_KERNEL);
229 if (rds_ring == NULL) {
230 dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
231 netdev->name);
232 return -ENOMEM;
233 }
234 recv_ctx->rds_rings = rds_ring;
235
236 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
237 rds_ring = &recv_ctx->rds_rings[ring];
238 switch (ring) {
239 case RCV_RING_NORMAL:
240 rds_ring->num_desc = adapter->num_rxd;
241 if (adapter->ahw.cut_through) {
242 rds_ring->dma_size =
243 NX_CT_DEFAULT_RX_BUF_LEN;
244 rds_ring->skb_size =
245 NX_CT_DEFAULT_RX_BUF_LEN;
246 } else {
247 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
248 rds_ring->dma_size =
249 NX_P3_RX_BUF_MAX_LEN;
250 else
251 rds_ring->dma_size =
252 NX_P2_RX_BUF_MAX_LEN;
253 rds_ring->skb_size =
254 rds_ring->dma_size + NET_IP_ALIGN;
255 }
256 break;
257
258 case RCV_RING_JUMBO:
259 rds_ring->num_desc = adapter->num_jumbo_rxd;
260 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
261 rds_ring->dma_size =
262 NX_P3_RX_JUMBO_BUF_MAX_LEN;
263 else
264 rds_ring->dma_size =
265 NX_P2_RX_JUMBO_BUF_MAX_LEN;
266
267 if (adapter->capabilities & NX_CAP0_HW_LRO)
268 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
269
270 rds_ring->skb_size =
271 rds_ring->dma_size + NET_IP_ALIGN;
272 break;
273
274 case RCV_RING_LRO:
275 rds_ring->num_desc = adapter->num_lro_rxd;
276 rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
277 rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
278 break;
279
280 }
281 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
282 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
283 if (rds_ring->rx_buf_arr == NULL) {
284 printk(KERN_ERR "%s: Failed to allocate "
285 "rx buffer ring %d\n",
286 netdev->name, ring);
287 /* free whatever was already allocated */
288 goto err_out;
289 }
290 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
291 INIT_LIST_HEAD(&rds_ring->free_list);
292 /*
293 * Now go through all of them, set reference handles
294 * and put them in the queues.
295 */
296 rx_buf = rds_ring->rx_buf_arr;
297 for (i = 0; i < rds_ring->num_desc; i++) {
298 list_add_tail(&rx_buf->list,
299 &rds_ring->free_list);
300 rx_buf->ref_handle = i;
301 rx_buf->state = NETXEN_BUFFER_FREE;
302 rx_buf++;
303 }
304 spin_lock_init(&rds_ring->lock);
305 }
306
307 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
308 sds_ring = &recv_ctx->sds_rings[ring];
309 sds_ring->irq = adapter->msix_entries[ring].vector;
310 sds_ring->adapter = adapter;
311 sds_ring->num_desc = adapter->num_rxd;
312
313 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
314 INIT_LIST_HEAD(&sds_ring->free_list[i]);
315 }
316
317 return 0;
318
319 err_out:
320 netxen_free_sw_resources(adapter);
321 return -ENOMEM;
322 }
323
324 /*
325 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
326 * address to external PCI CRB address.
327 */
328 static u32 netxen_decode_crb_addr(u32 addr)
329 {
330 int i;
331 u32 base_addr, offset, pci_base;
332
333 crb_addr_transform_setup();
334
335 pci_base = NETXEN_ADDR_ERROR;
336 base_addr = addr & 0xfff00000;
337 offset = addr & 0x000fffff;
338
339 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
340 if (crb_addr_xform[i] == base_addr) {
341 pci_base = i << 20;
342 break;
343 }
344 }
345 if (pci_base == NETXEN_ADDR_ERROR)
346 return pci_base;
347 else
348 return (pci_base + offset);
349 }
350
351 #define NETXEN_MAX_ROM_WAIT_USEC 100
352
353 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
354 {
355 long timeout = 0;
356 long done = 0;
357
358 cond_resched();
359
360 while (done == 0) {
361 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
362 done &= 2;
363 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
364 dev_err(&adapter->pdev->dev,
365 "Timeout reached waiting for rom done");
366 return -EIO;
367 }
368 udelay(1);
369 }
370 return 0;
371 }
372
373 static int do_rom_fast_read(struct netxen_adapter *adapter,
374 int addr, int *valp)
375 {
376 NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
377 NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
378 NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
379 NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
380 if (netxen_wait_rom_done(adapter)) {
381 printk("Error waiting for rom done\n");
382 return -EIO;
383 }
384 /* reset abyte_cnt and dummy_byte_cnt */
385 NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
386 udelay(10);
387 NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
388
389 *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
390 return 0;
391 }
392
393 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
394 u8 *bytes, size_t size)
395 {
396 int addridx;
397 int ret = 0;
398
399 for (addridx = addr; addridx < (addr + size); addridx += 4) {
400 int v;
401 ret = do_rom_fast_read(adapter, addridx, &v);
402 if (ret != 0)
403 break;
404 *(__le32 *)bytes = cpu_to_le32(v);
405 bytes += 4;
406 }
407
408 return ret;
409 }
410
411 int
412 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
413 u8 *bytes, size_t size)
414 {
415 int ret;
416
417 ret = netxen_rom_lock(adapter);
418 if (ret < 0)
419 return ret;
420
421 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
422
423 netxen_rom_unlock(adapter);
424 return ret;
425 }
426
427 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
428 {
429 int ret;
430
431 if (netxen_rom_lock(adapter) != 0)
432 return -EIO;
433
434 ret = do_rom_fast_read(adapter, addr, valp);
435 netxen_rom_unlock(adapter);
436 return ret;
437 }
438
439 #define NETXEN_BOARDTYPE 0x4008
440 #define NETXEN_BOARDNUM 0x400c
441 #define NETXEN_CHIPNUM 0x4010
442
443 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
444 {
445 int addr, val;
446 int i, n, init_delay = 0;
447 struct crb_addr_pair *buf;
448 unsigned offset;
449 u32 off;
450
451 /* resetall */
452 netxen_rom_lock(adapter);
453 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
454 netxen_rom_unlock(adapter);
455
456 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
457 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
458 (n != 0xcafecafe) ||
459 netxen_rom_fast_read(adapter, 4, &n) != 0) {
460 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
461 "n: %08x\n", netxen_nic_driver_name, n);
462 return -EIO;
463 }
464 offset = n & 0xffffU;
465 n = (n >> 16) & 0xffffU;
466 } else {
467 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
468 !(n & 0x80000000)) {
469 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
470 "n: %08x\n", netxen_nic_driver_name, n);
471 return -EIO;
472 }
473 offset = 1;
474 n &= ~0x80000000;
475 }
476
477 if (n >= 1024) {
478 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
479 " initialized.\n", __func__, n);
480 return -EIO;
481 }
482
483 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
484 if (buf == NULL) {
485 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
486 netxen_nic_driver_name);
487 return -ENOMEM;
488 }
489
490 for (i = 0; i < n; i++) {
491 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
492 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
493 kfree(buf);
494 return -EIO;
495 }
496
497 buf[i].addr = addr;
498 buf[i].data = val;
499
500 }
501
502 for (i = 0; i < n; i++) {
503
504 off = netxen_decode_crb_addr(buf[i].addr);
505 if (off == NETXEN_ADDR_ERROR) {
506 printk(KERN_ERR"CRB init value out of range %x\n",
507 buf[i].addr);
508 continue;
509 }
510 off += NETXEN_PCI_CRBSPACE;
511
512 if (off & 1)
513 continue;
514
515 /* skipping cold reboot MAGIC */
516 if (off == NETXEN_CAM_RAM(0x1fc))
517 continue;
518
519 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
520 if (off == (NETXEN_CRB_I2C0 + 0x1c))
521 continue;
522 /* do not reset PCI */
523 if (off == (ROMUSB_GLB + 0xbc))
524 continue;
525 if (off == (ROMUSB_GLB + 0xa8))
526 continue;
527 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
528 continue;
529 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
530 continue;
531 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
532 continue;
533 if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
534 continue;
535 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
536 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
537 buf[i].data = 0x1020;
538 /* skip the function enable register */
539 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
540 continue;
541 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
542 continue;
543 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
544 continue;
545 }
546
547 init_delay = 1;
548 /* After writing this register, HW needs time for CRB */
549 /* to quiet down (else crb_window returns 0xffffffff) */
550 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
551 init_delay = 1000;
552 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
553 /* hold xdma in reset also */
554 buf[i].data = NETXEN_NIC_XDMA_RESET;
555 buf[i].data = 0x8000ff;
556 }
557 }
558
559 NXWR32(adapter, off, buf[i].data);
560
561 msleep(init_delay);
562 }
563 kfree(buf);
564
565 /* disable_peg_cache_all */
566
567 /* unreset_net_cache */
568 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
569 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
570 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
571 }
572
573 /* p2dn replyCount */
574 NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
575 /* disable_peg_cache 0 */
576 NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
577 /* disable_peg_cache 1 */
578 NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
579
580 /* peg_clr_all */
581
582 /* peg_clr 0 */
583 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
584 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
585 /* peg_clr 1 */
586 NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
587 NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
588 /* peg_clr 2 */
589 NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
590 NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
591 /* peg_clr 3 */
592 NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
593 NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
594 return 0;
595 }
596
597 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
598 {
599 uint32_t i;
600 struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
601 __le32 entries = cpu_to_le32(directory->num_entries);
602
603 for (i = 0; i < entries; i++) {
604
605 __le32 offs = cpu_to_le32(directory->findex) +
606 (i * cpu_to_le32(directory->entry_size));
607 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
608
609 if (tab_type == section)
610 return (struct uni_table_desc *) &unirom[offs];
611 }
612
613 return NULL;
614 }
615
616 static int
617 nx_set_product_offs(struct netxen_adapter *adapter)
618 {
619 struct uni_table_desc *ptab_descr;
620 const u8 *unirom = adapter->fw->data;
621 uint32_t i;
622 __le32 entries;
623
624 int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
625 1 : netxen_p3_has_mn(adapter);
626
627 ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
628 if (ptab_descr == NULL)
629 return -1;
630
631 entries = cpu_to_le32(ptab_descr->num_entries);
632
633 nomn:
634 for (i = 0; i < entries; i++) {
635
636 __le32 flags, file_chiprev, offs;
637 u8 chiprev = adapter->ahw.revision_id;
638 uint32_t flagbit;
639
640 offs = cpu_to_le32(ptab_descr->findex) +
641 (i * cpu_to_le32(ptab_descr->entry_size));
642 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
643 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
644 NX_UNI_CHIP_REV_OFF));
645
646 flagbit = mn_present ? 1 : 2;
647
648 if ((chiprev == file_chiprev) &&
649 ((1ULL << flagbit) & flags)) {
650 adapter->file_prd_off = offs;
651 return 0;
652 }
653 }
654
655 if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
656 mn_present = 0;
657 goto nomn;
658 }
659
660 return -1;
661 }
662
663
664 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
665 u32 section, u32 idx_offset)
666 {
667 const u8 *unirom = adapter->fw->data;
668 int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
669 idx_offset));
670 struct uni_table_desc *tab_desc;
671 __le32 offs;
672
673 tab_desc = nx_get_table_desc(unirom, section);
674
675 if (tab_desc == NULL)
676 return NULL;
677
678 offs = cpu_to_le32(tab_desc->findex) +
679 (cpu_to_le32(tab_desc->entry_size) * idx);
680
681 return (struct uni_data_desc *)&unirom[offs];
682 }
683
684 static u8 *
685 nx_get_bootld_offs(struct netxen_adapter *adapter)
686 {
687 u32 offs = NETXEN_BOOTLD_START;
688
689 if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
690 offs = cpu_to_le32((nx_get_data_desc(adapter,
691 NX_UNI_DIR_SECT_BOOTLD,
692 NX_UNI_BOOTLD_IDX_OFF))->findex);
693
694 return (u8 *)&adapter->fw->data[offs];
695 }
696
697 static u8 *
698 nx_get_fw_offs(struct netxen_adapter *adapter)
699 {
700 u32 offs = NETXEN_IMAGE_START;
701
702 if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
703 offs = cpu_to_le32((nx_get_data_desc(adapter,
704 NX_UNI_DIR_SECT_FW,
705 NX_UNI_FIRMWARE_IDX_OFF))->findex);
706
707 return (u8 *)&adapter->fw->data[offs];
708 }
709
710 static __le32
711 nx_get_fw_size(struct netxen_adapter *adapter)
712 {
713 if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
714 return cpu_to_le32((nx_get_data_desc(adapter,
715 NX_UNI_DIR_SECT_FW,
716 NX_UNI_FIRMWARE_IDX_OFF))->size);
717 else
718 return cpu_to_le32(
719 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
720 }
721
722 static __le32
723 nx_get_fw_version(struct netxen_adapter *adapter)
724 {
725 struct uni_data_desc *fw_data_desc;
726 const struct firmware *fw = adapter->fw;
727 __le32 major, minor, sub;
728 const u8 *ver_str;
729 int i, ret = 0;
730
731 if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
732
733 fw_data_desc = nx_get_data_desc(adapter,
734 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
735 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
736 cpu_to_le32(fw_data_desc->size) - 17;
737
738 for (i = 0; i < 12; i++) {
739 if (!strncmp(&ver_str[i], "REV=", 4)) {
740 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
741 &major, &minor, &sub);
742 break;
743 }
744 }
745
746 if (ret != 3)
747 return 0;
748
749 return major + (minor << 8) + (sub << 16);
750
751 } else
752 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
753 }
754
755 static __le32
756 nx_get_bios_version(struct netxen_adapter *adapter)
757 {
758 const struct firmware *fw = adapter->fw;
759 __le32 bios_ver, prd_off = adapter->file_prd_off;
760
761 if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
762 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
763 + NX_UNI_BIOS_VERSION_OFF));
764 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
765 (bios_ver >> 24);
766 } else
767 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
768
769 }
770
771 int
772 netxen_need_fw_reset(struct netxen_adapter *adapter)
773 {
774 u32 count, old_count;
775 u32 val, version, major, minor, build;
776 int i, timeout;
777 u8 fw_type;
778
779 /* NX2031 firmware doesn't support heartbit */
780 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
781 return 1;
782
783 if (adapter->need_fw_reset)
784 return 1;
785
786 /* last attempt had failed */
787 if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
788 return 1;
789
790 old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
791
792 for (i = 0; i < 10; i++) {
793
794 timeout = msleep_interruptible(200);
795 if (timeout) {
796 NXWR32(adapter, CRB_CMDPEG_STATE,
797 PHAN_INITIALIZE_FAILED);
798 return -EINTR;
799 }
800
801 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
802 if (count != old_count)
803 break;
804 }
805
806 /* firmware is dead */
807 if (count == old_count)
808 return 1;
809
810 /* check if we have got newer or different file firmware */
811 if (adapter->fw) {
812
813 val = nx_get_fw_version(adapter);
814
815 version = NETXEN_DECODE_VERSION(val);
816
817 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
818 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
819 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
820
821 if (version > NETXEN_VERSION_CODE(major, minor, build))
822 return 1;
823
824 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
825 adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
826
827 val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
828 fw_type = (val & 0x4) ?
829 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
830
831 if (adapter->fw_type != fw_type)
832 return 1;
833 }
834 }
835
836 return 0;
837 }
838
839 static char *fw_name[] = {
840 NX_P2_MN_ROMIMAGE_NAME,
841 NX_P3_CT_ROMIMAGE_NAME,
842 NX_P3_MN_ROMIMAGE_NAME,
843 NX_UNIFIED_ROMIMAGE_NAME,
844 NX_FLASH_ROMIMAGE_NAME,
845 };
846
847 int
848 netxen_load_firmware(struct netxen_adapter *adapter)
849 {
850 u64 *ptr64;
851 u32 i, flashaddr, size;
852 const struct firmware *fw = adapter->fw;
853 struct pci_dev *pdev = adapter->pdev;
854
855 dev_info(&pdev->dev, "loading firmware from %s\n",
856 fw_name[adapter->fw_type]);
857
858 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
859 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
860
861 if (fw) {
862 __le64 data;
863
864 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
865
866 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
867 flashaddr = NETXEN_BOOTLD_START;
868
869 for (i = 0; i < size; i++) {
870 data = cpu_to_le64(ptr64[i]);
871
872 if (adapter->pci_mem_write(adapter, flashaddr, data))
873 return -EIO;
874
875 flashaddr += 8;
876 }
877
878 size = (__force u32)nx_get_fw_size(adapter) / 8;
879
880 ptr64 = (u64 *)nx_get_fw_offs(adapter);
881 flashaddr = NETXEN_IMAGE_START;
882
883 for (i = 0; i < size; i++) {
884 data = cpu_to_le64(ptr64[i]);
885
886 if (adapter->pci_mem_write(adapter,
887 flashaddr, data))
888 return -EIO;
889
890 flashaddr += 8;
891 }
892 } else {
893 u64 data;
894 u32 hi, lo;
895
896 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
897 flashaddr = NETXEN_BOOTLD_START;
898
899 for (i = 0; i < size; i++) {
900 if (netxen_rom_fast_read(adapter,
901 flashaddr, (int *)&lo) != 0)
902 return -EIO;
903 if (netxen_rom_fast_read(adapter,
904 flashaddr + 4, (int *)&hi) != 0)
905 return -EIO;
906
907 /* hi, lo are already in host endian byteorder */
908 data = (((u64)hi << 32) | lo);
909
910 if (adapter->pci_mem_write(adapter,
911 flashaddr, data))
912 return -EIO;
913
914 flashaddr += 8;
915 }
916 }
917 msleep(1);
918
919 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
920 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
921 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
922 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
923 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
924 else {
925 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
926 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
927 }
928
929 return 0;
930 }
931
932 static int
933 netxen_validate_firmware(struct netxen_adapter *adapter)
934 {
935 __le32 val;
936 u32 ver, min_ver, bios, min_size;
937 struct pci_dev *pdev = adapter->pdev;
938 const struct firmware *fw = adapter->fw;
939 u8 fw_type = adapter->fw_type;
940
941 if (fw_type == NX_UNIFIED_ROMIMAGE) {
942 if (nx_set_product_offs(adapter))
943 return -EINVAL;
944
945 min_size = NX_UNI_FW_MIN_SIZE;
946 } else {
947 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
948 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
949 return -EINVAL;
950
951 min_size = NX_FW_MIN_SIZE;
952 }
953
954 if (fw->size < min_size)
955 return -EINVAL;
956
957 val = nx_get_fw_version(adapter);
958
959 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
960 min_ver = NETXEN_VERSION_CODE(4, 0, 216);
961 else
962 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
963
964 ver = NETXEN_DECODE_VERSION(val);
965
966 if ((_major(ver) > _NETXEN_NIC_LINUX_MAJOR) || (ver < min_ver)) {
967 dev_err(&pdev->dev,
968 "%s: firmware version %d.%d.%d unsupported\n",
969 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
970 return -EINVAL;
971 }
972
973 val = nx_get_bios_version(adapter);
974 netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
975 if ((__force u32)val != bios) {
976 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
977 fw_name[fw_type]);
978 return -EINVAL;
979 }
980
981 /* check if flashed firmware is newer */
982 if (netxen_rom_fast_read(adapter,
983 NX_FW_VERSION_OFFSET, (int *)&val))
984 return -EIO;
985 val = NETXEN_DECODE_VERSION(val);
986 if (val > ver) {
987 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
988 fw_name[fw_type]);
989 return -EINVAL;
990 }
991
992 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
993 return 0;
994 }
995
996 static void
997 nx_get_next_fwtype(struct netxen_adapter *adapter)
998 {
999 u8 fw_type;
1000
1001 switch (adapter->fw_type) {
1002 case NX_UNKNOWN_ROMIMAGE:
1003 fw_type = NX_UNIFIED_ROMIMAGE;
1004 break;
1005
1006 case NX_UNIFIED_ROMIMAGE:
1007 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1008 fw_type = NX_FLASH_ROMIMAGE;
1009 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1010 fw_type = NX_P2_MN_ROMIMAGE;
1011 else if (netxen_p3_has_mn(adapter))
1012 fw_type = NX_P3_MN_ROMIMAGE;
1013 else
1014 fw_type = NX_P3_CT_ROMIMAGE;
1015 break;
1016
1017 case NX_P3_MN_ROMIMAGE:
1018 fw_type = NX_P3_CT_ROMIMAGE;
1019 break;
1020
1021 case NX_P2_MN_ROMIMAGE:
1022 case NX_P3_CT_ROMIMAGE:
1023 default:
1024 fw_type = NX_FLASH_ROMIMAGE;
1025 break;
1026 }
1027
1028 adapter->fw_type = fw_type;
1029 }
1030
1031 static int
1032 netxen_p3_has_mn(struct netxen_adapter *adapter)
1033 {
1034 u32 capability, flashed_ver;
1035 capability = 0;
1036
1037 /* NX2031 always had MN */
1038 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1039 return 1;
1040
1041 netxen_rom_fast_read(adapter,
1042 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1043 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1044
1045 if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1046
1047 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1048 if (capability & NX_PEG_TUNE_MN_PRESENT)
1049 return 1;
1050 }
1051 return 0;
1052 }
1053
1054 void netxen_request_firmware(struct netxen_adapter *adapter)
1055 {
1056 struct pci_dev *pdev = adapter->pdev;
1057 int rc = 0;
1058
1059 adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1060
1061 next:
1062 nx_get_next_fwtype(adapter);
1063
1064 if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1065 adapter->fw = NULL;
1066 } else {
1067 rc = request_firmware(&adapter->fw,
1068 fw_name[adapter->fw_type], &pdev->dev);
1069 if (rc != 0)
1070 goto next;
1071
1072 rc = netxen_validate_firmware(adapter);
1073 if (rc != 0) {
1074 release_firmware(adapter->fw);
1075 msleep(1);
1076 goto next;
1077 }
1078 }
1079 }
1080
1081
1082 void
1083 netxen_release_firmware(struct netxen_adapter *adapter)
1084 {
1085 if (adapter->fw)
1086 release_firmware(adapter->fw);
1087 adapter->fw = NULL;
1088 }
1089
1090 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1091 {
1092 u64 addr;
1093 u32 hi, lo;
1094
1095 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1096 return 0;
1097
1098 adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1099 NETXEN_HOST_DUMMY_DMA_SIZE,
1100 &adapter->dummy_dma.phys_addr);
1101 if (adapter->dummy_dma.addr == NULL) {
1102 dev_err(&adapter->pdev->dev,
1103 "ERROR: Could not allocate dummy DMA memory\n");
1104 return -ENOMEM;
1105 }
1106
1107 addr = (uint64_t) adapter->dummy_dma.phys_addr;
1108 hi = (addr >> 32) & 0xffffffff;
1109 lo = addr & 0xffffffff;
1110
1111 NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1112 NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1113
1114 return 0;
1115 }
1116
1117 /*
1118 * NetXen DMA watchdog control:
1119 *
1120 * Bit 0 : enabled => R/O: 1 watchdog active, 0 inactive
1121 * Bit 1 : disable_request => 1 req disable dma watchdog
1122 * Bit 2 : enable_request => 1 req enable dma watchdog
1123 * Bit 3-31 : unused
1124 */
1125 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1126 {
1127 int i = 100;
1128 u32 ctrl;
1129
1130 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1131 return;
1132
1133 if (!adapter->dummy_dma.addr)
1134 return;
1135
1136 ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1137 if ((ctrl & 0x1) != 0) {
1138 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1139
1140 while ((ctrl & 0x1) != 0) {
1141
1142 msleep(50);
1143
1144 ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1145
1146 if (--i == 0)
1147 break;
1148 };
1149 }
1150
1151 if (i) {
1152 pci_free_consistent(adapter->pdev,
1153 NETXEN_HOST_DUMMY_DMA_SIZE,
1154 adapter->dummy_dma.addr,
1155 adapter->dummy_dma.phys_addr);
1156 adapter->dummy_dma.addr = NULL;
1157 } else
1158 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1159 }
1160
1161 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1162 {
1163 u32 val = 0;
1164 int retries = 60;
1165
1166 if (pegtune_val)
1167 return 0;
1168
1169 do {
1170 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1171
1172 switch (val) {
1173 case PHAN_INITIALIZE_COMPLETE:
1174 case PHAN_INITIALIZE_ACK:
1175 return 0;
1176 case PHAN_INITIALIZE_FAILED:
1177 goto out_err;
1178 default:
1179 break;
1180 }
1181
1182 msleep(500);
1183
1184 } while (--retries);
1185
1186 NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1187
1188 out_err:
1189 dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1190 return -EIO;
1191 }
1192
1193 static int
1194 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1195 {
1196 u32 val = 0;
1197 int retries = 2000;
1198
1199 do {
1200 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1201
1202 if (val == PHAN_PEG_RCV_INITIALIZED)
1203 return 0;
1204
1205 msleep(10);
1206
1207 } while (--retries);
1208
1209 if (!retries) {
1210 printk(KERN_ERR "Receive Peg initialization not "
1211 "complete, state: 0x%x.\n", val);
1212 return -EIO;
1213 }
1214
1215 return 0;
1216 }
1217
1218 int netxen_init_firmware(struct netxen_adapter *adapter)
1219 {
1220 int err;
1221
1222 err = netxen_receive_peg_ready(adapter);
1223 if (err)
1224 return err;
1225
1226 NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1227 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1228 NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1229 NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1230
1231 return err;
1232 }
1233
1234 static void
1235 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1236 {
1237 u32 cable_OUI;
1238 u16 cable_len;
1239 u16 link_speed;
1240 u8 link_status, module, duplex, autoneg;
1241 struct net_device *netdev = adapter->netdev;
1242
1243 adapter->has_link_events = 1;
1244
1245 cable_OUI = msg->body[1] & 0xffffffff;
1246 cable_len = (msg->body[1] >> 32) & 0xffff;
1247 link_speed = (msg->body[1] >> 48) & 0xffff;
1248
1249 link_status = msg->body[2] & 0xff;
1250 duplex = (msg->body[2] >> 16) & 0xff;
1251 autoneg = (msg->body[2] >> 24) & 0xff;
1252
1253 module = (msg->body[2] >> 8) & 0xff;
1254 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1255 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1256 netdev->name, cable_OUI, cable_len);
1257 } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1258 printk(KERN_INFO "%s: unsupported cable length %d\n",
1259 netdev->name, cable_len);
1260 }
1261
1262 netxen_advert_link_change(adapter, link_status);
1263
1264 /* update link parameters */
1265 if (duplex == LINKEVENT_FULL_DUPLEX)
1266 adapter->link_duplex = DUPLEX_FULL;
1267 else
1268 adapter->link_duplex = DUPLEX_HALF;
1269 adapter->module_type = module;
1270 adapter->link_autoneg = autoneg;
1271 adapter->link_speed = link_speed;
1272 }
1273
1274 static void
1275 netxen_handle_fw_message(int desc_cnt, int index,
1276 struct nx_host_sds_ring *sds_ring)
1277 {
1278 nx_fw_msg_t msg;
1279 struct status_desc *desc;
1280 int i = 0, opcode;
1281
1282 while (desc_cnt > 0 && i < 8) {
1283 desc = &sds_ring->desc_head[index];
1284 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1285 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1286
1287 index = get_next_index(index, sds_ring->num_desc);
1288 desc_cnt--;
1289 }
1290
1291 opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1292 switch (opcode) {
1293 case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1294 netxen_handle_linkevent(sds_ring->adapter, &msg);
1295 break;
1296 default:
1297 break;
1298 }
1299 }
1300
1301 static int
1302 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1303 struct nx_host_rds_ring *rds_ring,
1304 struct netxen_rx_buffer *buffer)
1305 {
1306 struct sk_buff *skb;
1307 dma_addr_t dma;
1308 struct pci_dev *pdev = adapter->pdev;
1309
1310 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
1311 if (!buffer->skb)
1312 return 1;
1313
1314 skb = buffer->skb;
1315
1316 if (!adapter->ahw.cut_through)
1317 skb_reserve(skb, 2);
1318
1319 dma = pci_map_single(pdev, skb->data,
1320 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1321
1322 if (pci_dma_mapping_error(pdev, dma)) {
1323 dev_kfree_skb_any(skb);
1324 buffer->skb = NULL;
1325 return 1;
1326 }
1327
1328 buffer->skb = skb;
1329 buffer->dma = dma;
1330 buffer->state = NETXEN_BUFFER_BUSY;
1331
1332 return 0;
1333 }
1334
1335 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1336 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1337 {
1338 struct netxen_rx_buffer *buffer;
1339 struct sk_buff *skb;
1340
1341 buffer = &rds_ring->rx_buf_arr[index];
1342
1343 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1344 PCI_DMA_FROMDEVICE);
1345
1346 skb = buffer->skb;
1347 if (!skb)
1348 goto no_skb;
1349
1350 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1351 adapter->stats.csummed++;
1352 skb->ip_summed = CHECKSUM_UNNECESSARY;
1353 } else
1354 skb->ip_summed = CHECKSUM_NONE;
1355
1356 skb->dev = adapter->netdev;
1357
1358 buffer->skb = NULL;
1359 no_skb:
1360 buffer->state = NETXEN_BUFFER_FREE;
1361 return skb;
1362 }
1363
1364 static struct netxen_rx_buffer *
1365 netxen_process_rcv(struct netxen_adapter *adapter,
1366 struct nx_host_sds_ring *sds_ring,
1367 int ring, u64 sts_data0)
1368 {
1369 struct net_device *netdev = adapter->netdev;
1370 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1371 struct netxen_rx_buffer *buffer;
1372 struct sk_buff *skb;
1373 struct nx_host_rds_ring *rds_ring;
1374 int index, length, cksum, pkt_offset;
1375
1376 if (unlikely(ring >= adapter->max_rds_rings))
1377 return NULL;
1378
1379 rds_ring = &recv_ctx->rds_rings[ring];
1380
1381 index = netxen_get_sts_refhandle(sts_data0);
1382 if (unlikely(index >= rds_ring->num_desc))
1383 return NULL;
1384
1385 buffer = &rds_ring->rx_buf_arr[index];
1386
1387 length = netxen_get_sts_totallength(sts_data0);
1388 cksum = netxen_get_sts_status(sts_data0);
1389 pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1390
1391 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1392 if (!skb)
1393 return buffer;
1394
1395 if (length > rds_ring->skb_size)
1396 skb_put(skb, rds_ring->skb_size);
1397 else
1398 skb_put(skb, length);
1399
1400
1401 if (pkt_offset)
1402 skb_pull(skb, pkt_offset);
1403
1404 skb->truesize = skb->len + sizeof(struct sk_buff);
1405 skb->protocol = eth_type_trans(skb, netdev);
1406
1407 napi_gro_receive(&sds_ring->napi, skb);
1408
1409 adapter->stats.rx_pkts++;
1410 adapter->stats.rxbytes += length;
1411
1412 return buffer;
1413 }
1414
1415 #define TCP_HDR_SIZE 20
1416 #define TCP_TS_OPTION_SIZE 12
1417 #define TCP_TS_HDR_SIZE (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1418
1419 static struct netxen_rx_buffer *
1420 netxen_process_lro(struct netxen_adapter *adapter,
1421 struct nx_host_sds_ring *sds_ring,
1422 int ring, u64 sts_data0, u64 sts_data1)
1423 {
1424 struct net_device *netdev = adapter->netdev;
1425 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1426 struct netxen_rx_buffer *buffer;
1427 struct sk_buff *skb;
1428 struct nx_host_rds_ring *rds_ring;
1429 struct iphdr *iph;
1430 struct tcphdr *th;
1431 bool push, timestamp;
1432 int l2_hdr_offset, l4_hdr_offset;
1433 int index;
1434 u16 lro_length, length, data_offset;
1435 u32 seq_number;
1436
1437 if (unlikely(ring > adapter->max_rds_rings))
1438 return NULL;
1439
1440 rds_ring = &recv_ctx->rds_rings[ring];
1441
1442 index = netxen_get_lro_sts_refhandle(sts_data0);
1443 if (unlikely(index > rds_ring->num_desc))
1444 return NULL;
1445
1446 buffer = &rds_ring->rx_buf_arr[index];
1447
1448 timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1449 lro_length = netxen_get_lro_sts_length(sts_data0);
1450 l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1451 l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1452 push = netxen_get_lro_sts_push_flag(sts_data0);
1453 seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1454
1455 skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1456 if (!skb)
1457 return buffer;
1458
1459 if (timestamp)
1460 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1461 else
1462 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1463
1464 skb_put(skb, lro_length + data_offset);
1465
1466 skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1467
1468 skb_pull(skb, l2_hdr_offset);
1469 skb->protocol = eth_type_trans(skb, netdev);
1470
1471 iph = (struct iphdr *)skb->data;
1472 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1473
1474 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1475 iph->tot_len = htons(length);
1476 iph->check = 0;
1477 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1478 th->psh = push;
1479 th->seq = htonl(seq_number);
1480
1481 length = skb->len;
1482
1483 netif_receive_skb(skb);
1484
1485 adapter->stats.lro_pkts++;
1486 adapter->stats.rxbytes += length;
1487
1488 return buffer;
1489 }
1490
1491 #define netxen_merge_rx_buffers(list, head) \
1492 do { list_splice_tail_init(list, head); } while (0);
1493
1494 int
1495 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1496 {
1497 struct netxen_adapter *adapter = sds_ring->adapter;
1498
1499 struct list_head *cur;
1500
1501 struct status_desc *desc;
1502 struct netxen_rx_buffer *rxbuf;
1503
1504 u32 consumer = sds_ring->consumer;
1505
1506 int count = 0;
1507 u64 sts_data0, sts_data1;
1508 int opcode, ring = 0, desc_cnt;
1509
1510 while (count < max) {
1511 desc = &sds_ring->desc_head[consumer];
1512 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1513
1514 if (!(sts_data0 & STATUS_OWNER_HOST))
1515 break;
1516
1517 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1518
1519 opcode = netxen_get_sts_opcode(sts_data0);
1520
1521 switch (opcode) {
1522 case NETXEN_NIC_RXPKT_DESC:
1523 case NETXEN_OLD_RXPKT_DESC:
1524 case NETXEN_NIC_SYN_OFFLOAD:
1525 ring = netxen_get_sts_type(sts_data0);
1526 rxbuf = netxen_process_rcv(adapter, sds_ring,
1527 ring, sts_data0);
1528 break;
1529 case NETXEN_NIC_LRO_DESC:
1530 ring = netxen_get_lro_sts_type(sts_data0);
1531 sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1532 rxbuf = netxen_process_lro(adapter, sds_ring,
1533 ring, sts_data0, sts_data1);
1534 break;
1535 case NETXEN_NIC_RESPONSE_DESC:
1536 netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1537 default:
1538 goto skip;
1539 }
1540
1541 WARN_ON(desc_cnt > 1);
1542
1543 if (rxbuf)
1544 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1545
1546 skip:
1547 for (; desc_cnt > 0; desc_cnt--) {
1548 desc = &sds_ring->desc_head[consumer];
1549 desc->status_desc_data[0] =
1550 cpu_to_le64(STATUS_OWNER_PHANTOM);
1551 consumer = get_next_index(consumer, sds_ring->num_desc);
1552 }
1553 count++;
1554 }
1555
1556 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1557 struct nx_host_rds_ring *rds_ring =
1558 &adapter->recv_ctx.rds_rings[ring];
1559
1560 if (!list_empty(&sds_ring->free_list[ring])) {
1561 list_for_each(cur, &sds_ring->free_list[ring]) {
1562 rxbuf = list_entry(cur,
1563 struct netxen_rx_buffer, list);
1564 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1565 }
1566 spin_lock(&rds_ring->lock);
1567 netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1568 &rds_ring->free_list);
1569 spin_unlock(&rds_ring->lock);
1570 }
1571
1572 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1573 }
1574
1575 if (count) {
1576 sds_ring->consumer = consumer;
1577 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1578 }
1579
1580 return count;
1581 }
1582
1583 /* Process Command status ring */
1584 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1585 {
1586 u32 sw_consumer, hw_consumer;
1587 int count = 0, i;
1588 struct netxen_cmd_buffer *buffer;
1589 struct pci_dev *pdev = adapter->pdev;
1590 struct net_device *netdev = adapter->netdev;
1591 struct netxen_skb_frag *frag;
1592 int done = 0;
1593 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1594
1595 if (!spin_trylock(&adapter->tx_clean_lock))
1596 return 1;
1597
1598 sw_consumer = tx_ring->sw_consumer;
1599 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1600
1601 while (sw_consumer != hw_consumer) {
1602 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1603 if (buffer->skb) {
1604 frag = &buffer->frag_array[0];
1605 pci_unmap_single(pdev, frag->dma, frag->length,
1606 PCI_DMA_TODEVICE);
1607 frag->dma = 0ULL;
1608 for (i = 1; i < buffer->frag_count; i++) {
1609 frag++; /* Get the next frag */
1610 pci_unmap_page(pdev, frag->dma, frag->length,
1611 PCI_DMA_TODEVICE);
1612 frag->dma = 0ULL;
1613 }
1614
1615 adapter->stats.xmitfinished++;
1616 dev_kfree_skb_any(buffer->skb);
1617 buffer->skb = NULL;
1618 }
1619
1620 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1621 if (++count >= MAX_STATUS_HANDLE)
1622 break;
1623 }
1624
1625 if (count && netif_running(netdev)) {
1626 tx_ring->sw_consumer = sw_consumer;
1627
1628 smp_mb();
1629
1630 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1631 __netif_tx_lock(tx_ring->txq, smp_processor_id());
1632 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH) {
1633 netif_wake_queue(netdev);
1634 adapter->tx_timeo_cnt = 0;
1635 }
1636 __netif_tx_unlock(tx_ring->txq);
1637 }
1638 }
1639 /*
1640 * If everything is freed up to consumer then check if the ring is full
1641 * If the ring is full then check if more needs to be freed and
1642 * schedule the call back again.
1643 *
1644 * This happens when there are 2 CPUs. One could be freeing and the
1645 * other filling it. If the ring is full when we get out of here and
1646 * the card has already interrupted the host then the host can miss the
1647 * interrupt.
1648 *
1649 * There is still a possible race condition and the host could miss an
1650 * interrupt. The card has to take care of this.
1651 */
1652 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1653 done = (sw_consumer == hw_consumer);
1654 spin_unlock(&adapter->tx_clean_lock);
1655
1656 return (done);
1657 }
1658
1659 void
1660 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1661 struct nx_host_rds_ring *rds_ring)
1662 {
1663 struct rcv_desc *pdesc;
1664 struct netxen_rx_buffer *buffer;
1665 int producer, count = 0;
1666 netxen_ctx_msg msg = 0;
1667 struct list_head *head;
1668
1669 producer = rds_ring->producer;
1670
1671 spin_lock(&rds_ring->lock);
1672 head = &rds_ring->free_list;
1673 while (!list_empty(head)) {
1674
1675 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1676
1677 if (!buffer->skb) {
1678 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1679 break;
1680 }
1681
1682 count++;
1683 list_del(&buffer->list);
1684
1685 /* make a rcv descriptor */
1686 pdesc = &rds_ring->desc_head[producer];
1687 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1688 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1689 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1690
1691 producer = get_next_index(producer, rds_ring->num_desc);
1692 }
1693 spin_unlock(&rds_ring->lock);
1694
1695 if (count) {
1696 rds_ring->producer = producer;
1697 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1698 (producer-1) & (rds_ring->num_desc-1));
1699
1700 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1701 /*
1702 * Write a doorbell msg to tell phanmon of change in
1703 * receive ring producer
1704 * Only for firmware version < 4.0.0
1705 */
1706 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1707 netxen_set_msg_privid(msg);
1708 netxen_set_msg_count(msg,
1709 ((producer - 1) &
1710 (rds_ring->num_desc - 1)));
1711 netxen_set_msg_ctxid(msg, adapter->portnum);
1712 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1713 NXWRIO(adapter, DB_NORMALIZE(adapter,
1714 NETXEN_RCV_PRODUCER_OFFSET), msg);
1715 }
1716 }
1717 }
1718
1719 static void
1720 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1721 struct nx_host_rds_ring *rds_ring)
1722 {
1723 struct rcv_desc *pdesc;
1724 struct netxen_rx_buffer *buffer;
1725 int producer, count = 0;
1726 struct list_head *head;
1727
1728 producer = rds_ring->producer;
1729 if (!spin_trylock(&rds_ring->lock))
1730 return;
1731
1732 head = &rds_ring->free_list;
1733 while (!list_empty(head)) {
1734
1735 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1736
1737 if (!buffer->skb) {
1738 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1739 break;
1740 }
1741
1742 count++;
1743 list_del(&buffer->list);
1744
1745 /* make a rcv descriptor */
1746 pdesc = &rds_ring->desc_head[producer];
1747 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1748 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1749 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1750
1751 producer = get_next_index(producer, rds_ring->num_desc);
1752 }
1753
1754 if (count) {
1755 rds_ring->producer = producer;
1756 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1757 (producer - 1) & (rds_ring->num_desc - 1));
1758 }
1759 spin_unlock(&rds_ring->lock);
1760 }
1761
1762 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1763 {
1764 memset(&adapter->stats, 0, sizeof(adapter->stats));
1765 return;
1766 }
1767