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netxen: refactor netxen_recv_context struct
[mirror_ubuntu-bionic-kernel.git] / drivers / net / netxen / netxen_nic_init.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
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 LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
28 *
29 */
30
31 #include <linux/netdevice.h>
32 #include <linux/delay.h>
33 #include "netxen_nic.h"
34 #include "netxen_nic_hw.h"
35 #include "netxen_nic_phan_reg.h"
36
37 struct crb_addr_pair {
38 u32 addr;
39 u32 data;
40 };
41
42 #define NETXEN_MAX_CRB_XFORM 60
43 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
44 #define NETXEN_ADDR_ERROR (0xffffffff)
45
46 #define crb_addr_transform(name) \
47 crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
48 NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
49
50 #define NETXEN_NIC_XDMA_RESET 0x8000ff
51
52 static void
53 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
54 struct nx_host_rds_ring *rds_ring);
55
56 static void crb_addr_transform_setup(void)
57 {
58 crb_addr_transform(XDMA);
59 crb_addr_transform(TIMR);
60 crb_addr_transform(SRE);
61 crb_addr_transform(SQN3);
62 crb_addr_transform(SQN2);
63 crb_addr_transform(SQN1);
64 crb_addr_transform(SQN0);
65 crb_addr_transform(SQS3);
66 crb_addr_transform(SQS2);
67 crb_addr_transform(SQS1);
68 crb_addr_transform(SQS0);
69 crb_addr_transform(RPMX7);
70 crb_addr_transform(RPMX6);
71 crb_addr_transform(RPMX5);
72 crb_addr_transform(RPMX4);
73 crb_addr_transform(RPMX3);
74 crb_addr_transform(RPMX2);
75 crb_addr_transform(RPMX1);
76 crb_addr_transform(RPMX0);
77 crb_addr_transform(ROMUSB);
78 crb_addr_transform(SN);
79 crb_addr_transform(QMN);
80 crb_addr_transform(QMS);
81 crb_addr_transform(PGNI);
82 crb_addr_transform(PGND);
83 crb_addr_transform(PGN3);
84 crb_addr_transform(PGN2);
85 crb_addr_transform(PGN1);
86 crb_addr_transform(PGN0);
87 crb_addr_transform(PGSI);
88 crb_addr_transform(PGSD);
89 crb_addr_transform(PGS3);
90 crb_addr_transform(PGS2);
91 crb_addr_transform(PGS1);
92 crb_addr_transform(PGS0);
93 crb_addr_transform(PS);
94 crb_addr_transform(PH);
95 crb_addr_transform(NIU);
96 crb_addr_transform(I2Q);
97 crb_addr_transform(EG);
98 crb_addr_transform(MN);
99 crb_addr_transform(MS);
100 crb_addr_transform(CAS2);
101 crb_addr_transform(CAS1);
102 crb_addr_transform(CAS0);
103 crb_addr_transform(CAM);
104 crb_addr_transform(C2C1);
105 crb_addr_transform(C2C0);
106 crb_addr_transform(SMB);
107 crb_addr_transform(OCM0);
108 crb_addr_transform(I2C0);
109 }
110
111 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
112 {
113 struct netxen_recv_context *recv_ctx;
114 struct nx_host_rds_ring *rds_ring;
115 struct netxen_rx_buffer *rx_buf;
116 int i, ring;
117
118 recv_ctx = &adapter->recv_ctx;
119 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
120 rds_ring = &recv_ctx->rds_rings[ring];
121 for (i = 0; i < rds_ring->num_desc; ++i) {
122 rx_buf = &(rds_ring->rx_buf_arr[i]);
123 if (rx_buf->state == NETXEN_BUFFER_FREE)
124 continue;
125 pci_unmap_single(adapter->pdev,
126 rx_buf->dma,
127 rds_ring->dma_size,
128 PCI_DMA_FROMDEVICE);
129 if (rx_buf->skb != NULL)
130 dev_kfree_skb_any(rx_buf->skb);
131 }
132 }
133 }
134
135 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
136 {
137 struct netxen_cmd_buffer *cmd_buf;
138 struct netxen_skb_frag *buffrag;
139 int i, j;
140 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
141
142 cmd_buf = tx_ring->cmd_buf_arr;
143 for (i = 0; i < tx_ring->num_desc; i++) {
144 buffrag = cmd_buf->frag_array;
145 if (buffrag->dma) {
146 pci_unmap_single(adapter->pdev, buffrag->dma,
147 buffrag->length, PCI_DMA_TODEVICE);
148 buffrag->dma = 0ULL;
149 }
150 for (j = 0; j < cmd_buf->frag_count; j++) {
151 buffrag++;
152 if (buffrag->dma) {
153 pci_unmap_page(adapter->pdev, buffrag->dma,
154 buffrag->length,
155 PCI_DMA_TODEVICE);
156 buffrag->dma = 0ULL;
157 }
158 }
159 if (cmd_buf->skb) {
160 dev_kfree_skb_any(cmd_buf->skb);
161 cmd_buf->skb = NULL;
162 }
163 cmd_buf++;
164 }
165 }
166
167 void netxen_free_sw_resources(struct netxen_adapter *adapter)
168 {
169 struct netxen_recv_context *recv_ctx;
170 struct nx_host_rds_ring *rds_ring;
171 struct nx_host_tx_ring *tx_ring;
172 int ring;
173
174 recv_ctx = &adapter->recv_ctx;
175
176 if (recv_ctx->rds_rings == NULL)
177 goto skip_rds;
178
179 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
180 rds_ring = &recv_ctx->rds_rings[ring];
181 if (rds_ring->rx_buf_arr) {
182 vfree(rds_ring->rx_buf_arr);
183 rds_ring->rx_buf_arr = NULL;
184 }
185 }
186 kfree(recv_ctx->rds_rings);
187
188 skip_rds:
189 if (adapter->tx_ring == NULL)
190 return;
191
192 tx_ring = adapter->tx_ring;
193 if (tx_ring->cmd_buf_arr)
194 vfree(tx_ring->cmd_buf_arr);
195 }
196
197 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
198 {
199 struct netxen_recv_context *recv_ctx;
200 struct nx_host_rds_ring *rds_ring;
201 struct nx_host_sds_ring *sds_ring;
202 struct nx_host_tx_ring *tx_ring;
203 struct netxen_rx_buffer *rx_buf;
204 int ring, i, size;
205
206 struct netxen_cmd_buffer *cmd_buf_arr;
207 struct net_device *netdev = adapter->netdev;
208 struct pci_dev *pdev = adapter->pdev;
209
210 size = sizeof(struct nx_host_tx_ring);
211 tx_ring = kzalloc(size, GFP_KERNEL);
212 if (tx_ring == NULL) {
213 dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
214 netdev->name);
215 return -ENOMEM;
216 }
217 adapter->tx_ring = tx_ring;
218
219 tx_ring->num_desc = adapter->num_txd;
220
221 cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
222 if (cmd_buf_arr == NULL) {
223 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
224 netdev->name);
225 return -ENOMEM;
226 }
227 memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
228 tx_ring->cmd_buf_arr = cmd_buf_arr;
229
230 recv_ctx = &adapter->recv_ctx;
231
232 size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
233 rds_ring = kzalloc(size, GFP_KERNEL);
234 if (rds_ring == NULL) {
235 dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
236 netdev->name);
237 return -ENOMEM;
238 }
239 recv_ctx->rds_rings = rds_ring;
240
241 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
242 rds_ring = &recv_ctx->rds_rings[ring];
243 switch (ring) {
244 case RCV_RING_NORMAL:
245 rds_ring->num_desc = adapter->num_rxd;
246 if (adapter->ahw.cut_through) {
247 rds_ring->dma_size =
248 NX_CT_DEFAULT_RX_BUF_LEN;
249 rds_ring->skb_size =
250 NX_CT_DEFAULT_RX_BUF_LEN;
251 } else {
252 rds_ring->dma_size = RX_DMA_MAP_LEN;
253 rds_ring->skb_size =
254 MAX_RX_BUFFER_LENGTH;
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 rds_ring->skb_size =
267 rds_ring->dma_size + NET_IP_ALIGN;
268 break;
269
270 case RCV_RING_LRO:
271 rds_ring->num_desc = adapter->num_lro_rxd;
272 rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
273 rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
274 break;
275
276 }
277 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
278 vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
279 if (rds_ring->rx_buf_arr == NULL) {
280 printk(KERN_ERR "%s: Failed to allocate "
281 "rx buffer ring %d\n",
282 netdev->name, ring);
283 /* free whatever was already allocated */
284 goto err_out;
285 }
286 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
287 INIT_LIST_HEAD(&rds_ring->free_list);
288 /*
289 * Now go through all of them, set reference handles
290 * and put them in the queues.
291 */
292 rx_buf = rds_ring->rx_buf_arr;
293 for (i = 0; i < rds_ring->num_desc; i++) {
294 list_add_tail(&rx_buf->list,
295 &rds_ring->free_list);
296 rx_buf->ref_handle = i;
297 rx_buf->state = NETXEN_BUFFER_FREE;
298 rx_buf++;
299 }
300 spin_lock_init(&rds_ring->lock);
301 }
302
303 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
304 sds_ring = &recv_ctx->sds_rings[ring];
305 sds_ring->irq = adapter->msix_entries[ring].vector;
306 sds_ring->adapter = adapter;
307 sds_ring->num_desc = adapter->num_rxd;
308
309 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
310 INIT_LIST_HEAD(&sds_ring->free_list[i]);
311 }
312
313 return 0;
314
315 err_out:
316 netxen_free_sw_resources(adapter);
317 return -ENOMEM;
318 }
319
320 void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
321 {
322 switch (adapter->ahw.port_type) {
323 case NETXEN_NIC_GBE:
324 adapter->enable_phy_interrupts =
325 netxen_niu_gbe_enable_phy_interrupts;
326 adapter->disable_phy_interrupts =
327 netxen_niu_gbe_disable_phy_interrupts;
328 adapter->macaddr_set = netxen_niu_macaddr_set;
329 adapter->set_mtu = netxen_nic_set_mtu_gb;
330 adapter->set_promisc = netxen_niu_set_promiscuous_mode;
331 adapter->phy_read = netxen_niu_gbe_phy_read;
332 adapter->phy_write = netxen_niu_gbe_phy_write;
333 adapter->init_port = netxen_niu_gbe_init_port;
334 adapter->stop_port = netxen_niu_disable_gbe_port;
335 break;
336
337 case NETXEN_NIC_XGBE:
338 adapter->enable_phy_interrupts =
339 netxen_niu_xgbe_enable_phy_interrupts;
340 adapter->disable_phy_interrupts =
341 netxen_niu_xgbe_disable_phy_interrupts;
342 adapter->macaddr_set = netxen_niu_xg_macaddr_set;
343 adapter->set_mtu = netxen_nic_set_mtu_xgb;
344 adapter->init_port = netxen_niu_xg_init_port;
345 adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
346 adapter->stop_port = netxen_niu_disable_xg_port;
347 break;
348
349 default:
350 break;
351 }
352
353 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
354 adapter->set_mtu = nx_fw_cmd_set_mtu;
355 adapter->set_promisc = netxen_p3_nic_set_promisc;
356 }
357 }
358
359 /*
360 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
361 * address to external PCI CRB address.
362 */
363 static u32 netxen_decode_crb_addr(u32 addr)
364 {
365 int i;
366 u32 base_addr, offset, pci_base;
367
368 crb_addr_transform_setup();
369
370 pci_base = NETXEN_ADDR_ERROR;
371 base_addr = addr & 0xfff00000;
372 offset = addr & 0x000fffff;
373
374 for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
375 if (crb_addr_xform[i] == base_addr) {
376 pci_base = i << 20;
377 break;
378 }
379 }
380 if (pci_base == NETXEN_ADDR_ERROR)
381 return pci_base;
382 else
383 return (pci_base + offset);
384 }
385
386 static long rom_max_timeout = 100;
387 static long rom_lock_timeout = 10000;
388
389 static int rom_lock(struct netxen_adapter *adapter)
390 {
391 int iter;
392 u32 done = 0;
393 int timeout = 0;
394
395 while (!done) {
396 /* acquire semaphore2 from PCI HW block */
397 done = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK));
398 if (done == 1)
399 break;
400 if (timeout >= rom_lock_timeout)
401 return -EIO;
402
403 timeout++;
404 /*
405 * Yield CPU
406 */
407 if (!in_atomic())
408 schedule();
409 else {
410 for (iter = 0; iter < 20; iter++)
411 cpu_relax(); /*This a nop instr on i386 */
412 }
413 }
414 NXWR32(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
415 return 0;
416 }
417
418 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
419 {
420 long timeout = 0;
421 long done = 0;
422
423 cond_resched();
424
425 while (done == 0) {
426 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
427 done &= 2;
428 timeout++;
429 if (timeout >= rom_max_timeout) {
430 printk("Timeout reached waiting for rom done");
431 return -EIO;
432 }
433 }
434 return 0;
435 }
436
437 static void netxen_rom_unlock(struct netxen_adapter *adapter)
438 {
439 /* release semaphore2 */
440 NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK));
441
442 }
443
444 static int do_rom_fast_read(struct netxen_adapter *adapter,
445 int addr, int *valp)
446 {
447 NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
448 NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
449 NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
450 NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
451 if (netxen_wait_rom_done(adapter)) {
452 printk("Error waiting for rom done\n");
453 return -EIO;
454 }
455 /* reset abyte_cnt and dummy_byte_cnt */
456 NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
457 udelay(10);
458 NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
459
460 *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
461 return 0;
462 }
463
464 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
465 u8 *bytes, size_t size)
466 {
467 int addridx;
468 int ret = 0;
469
470 for (addridx = addr; addridx < (addr + size); addridx += 4) {
471 int v;
472 ret = do_rom_fast_read(adapter, addridx, &v);
473 if (ret != 0)
474 break;
475 *(__le32 *)bytes = cpu_to_le32(v);
476 bytes += 4;
477 }
478
479 return ret;
480 }
481
482 int
483 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
484 u8 *bytes, size_t size)
485 {
486 int ret;
487
488 ret = rom_lock(adapter);
489 if (ret < 0)
490 return ret;
491
492 ret = do_rom_fast_read_words(adapter, addr, bytes, size);
493
494 netxen_rom_unlock(adapter);
495 return ret;
496 }
497
498 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
499 {
500 int ret;
501
502 if (rom_lock(adapter) != 0)
503 return -EIO;
504
505 ret = do_rom_fast_read(adapter, addr, valp);
506 netxen_rom_unlock(adapter);
507 return ret;
508 }
509
510 #define NETXEN_BOARDTYPE 0x4008
511 #define NETXEN_BOARDNUM 0x400c
512 #define NETXEN_CHIPNUM 0x4010
513
514 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
515 {
516 int addr, val;
517 int i, n, init_delay = 0;
518 struct crb_addr_pair *buf;
519 unsigned offset;
520 u32 off;
521
522 /* resetall */
523 rom_lock(adapter);
524 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
525 netxen_rom_unlock(adapter);
526
527 if (verbose) {
528 if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
529 printk("P2 ROM board type: 0x%08x\n", val);
530 else
531 printk("Could not read board type\n");
532 if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
533 printk("P2 ROM board num: 0x%08x\n", val);
534 else
535 printk("Could not read board number\n");
536 if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
537 printk("P2 ROM chip num: 0x%08x\n", val);
538 else
539 printk("Could not read chip number\n");
540 }
541
542 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
543 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
544 (n != 0xcafecafe) ||
545 netxen_rom_fast_read(adapter, 4, &n) != 0) {
546 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
547 "n: %08x\n", netxen_nic_driver_name, n);
548 return -EIO;
549 }
550 offset = n & 0xffffU;
551 n = (n >> 16) & 0xffffU;
552 } else {
553 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
554 !(n & 0x80000000)) {
555 printk(KERN_ERR "%s: ERROR Reading crb_init area: "
556 "n: %08x\n", netxen_nic_driver_name, n);
557 return -EIO;
558 }
559 offset = 1;
560 n &= ~0x80000000;
561 }
562
563 if (n < 1024) {
564 if (verbose)
565 printk(KERN_DEBUG "%s: %d CRB init values found"
566 " in ROM.\n", netxen_nic_driver_name, n);
567 } else {
568 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
569 " initialized.\n", __func__, n);
570 return -EIO;
571 }
572
573 buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
574 if (buf == NULL) {
575 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
576 netxen_nic_driver_name);
577 return -ENOMEM;
578 }
579 for (i = 0; i < n; i++) {
580 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
581 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
582 kfree(buf);
583 return -EIO;
584 }
585
586 buf[i].addr = addr;
587 buf[i].data = val;
588
589 if (verbose)
590 printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
591 netxen_nic_driver_name,
592 (u32)netxen_decode_crb_addr(addr), val);
593 }
594 for (i = 0; i < n; i++) {
595
596 off = netxen_decode_crb_addr(buf[i].addr);
597 if (off == NETXEN_ADDR_ERROR) {
598 printk(KERN_ERR"CRB init value out of range %x\n",
599 buf[i].addr);
600 continue;
601 }
602 off += NETXEN_PCI_CRBSPACE;
603 /* skipping cold reboot MAGIC */
604 if (off == NETXEN_CAM_RAM(0x1fc))
605 continue;
606
607 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
608 /* do not reset PCI */
609 if (off == (ROMUSB_GLB + 0xbc))
610 continue;
611 if (off == (ROMUSB_GLB + 0xa8))
612 continue;
613 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
614 continue;
615 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
616 continue;
617 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
618 continue;
619 if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
620 buf[i].data = 0x1020;
621 /* skip the function enable register */
622 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
623 continue;
624 if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
625 continue;
626 if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
627 continue;
628 }
629
630 if (off == NETXEN_ADDR_ERROR) {
631 printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
632 netxen_nic_driver_name, buf[i].addr);
633 continue;
634 }
635
636 init_delay = 1;
637 /* After writing this register, HW needs time for CRB */
638 /* to quiet down (else crb_window returns 0xffffffff) */
639 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
640 init_delay = 1000;
641 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
642 /* hold xdma in reset also */
643 buf[i].data = NETXEN_NIC_XDMA_RESET;
644 buf[i].data = 0x8000ff;
645 }
646 }
647
648 NXWR32(adapter, off, buf[i].data);
649
650 msleep(init_delay);
651 }
652 kfree(buf);
653
654 /* disable_peg_cache_all */
655
656 /* unreset_net_cache */
657 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
658 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
659 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
660 }
661
662 /* p2dn replyCount */
663 NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
664 /* disable_peg_cache 0 */
665 NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
666 /* disable_peg_cache 1 */
667 NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
668
669 /* peg_clr_all */
670
671 /* peg_clr 0 */
672 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
673 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
674 /* peg_clr 1 */
675 NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
676 NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
677 /* peg_clr 2 */
678 NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
679 NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
680 /* peg_clr 3 */
681 NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
682 NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
683 return 0;
684 }
685
686 int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
687 {
688 uint64_t addr;
689 uint32_t hi;
690 uint32_t lo;
691
692 adapter->dummy_dma.addr =
693 pci_alloc_consistent(adapter->pdev,
694 NETXEN_HOST_DUMMY_DMA_SIZE,
695 &adapter->dummy_dma.phys_addr);
696 if (adapter->dummy_dma.addr == NULL) {
697 printk("%s: ERROR: Could not allocate dummy DMA memory\n",
698 __func__);
699 return -ENOMEM;
700 }
701
702 addr = (uint64_t) adapter->dummy_dma.phys_addr;
703 hi = (addr >> 32) & 0xffffffff;
704 lo = addr & 0xffffffff;
705
706 NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
707 NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
708
709 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
710 uint32_t temp = 0;
711 NXWR32(adapter, CRB_HOST_DUMMY_BUF, temp);
712 }
713
714 return 0;
715 }
716
717 void netxen_free_adapter_offload(struct netxen_adapter *adapter)
718 {
719 int i = 100;
720
721 if (!adapter->dummy_dma.addr)
722 return;
723
724 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
725 do {
726 if (dma_watchdog_shutdown_request(adapter) == 1)
727 break;
728 msleep(50);
729 if (dma_watchdog_shutdown_poll_result(adapter) == 1)
730 break;
731 } while (--i);
732 }
733
734 if (i) {
735 pci_free_consistent(adapter->pdev,
736 NETXEN_HOST_DUMMY_DMA_SIZE,
737 adapter->dummy_dma.addr,
738 adapter->dummy_dma.phys_addr);
739 adapter->dummy_dma.addr = NULL;
740 } else {
741 printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
742 adapter->netdev->name);
743 }
744 }
745
746 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
747 {
748 u32 val = 0;
749 int retries = 60;
750
751 if (!pegtune_val) {
752 do {
753 val = NXRD32(adapter, CRB_CMDPEG_STATE);
754
755 if (val == PHAN_INITIALIZE_COMPLETE ||
756 val == PHAN_INITIALIZE_ACK)
757 return 0;
758
759 msleep(500);
760
761 } while (--retries);
762
763 if (!retries) {
764 pegtune_val = NXRD32(adapter,
765 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
766 printk(KERN_WARNING "netxen_phantom_init: init failed, "
767 "pegtune_val=%x\n", pegtune_val);
768 return -1;
769 }
770 }
771
772 return 0;
773 }
774
775 static int
776 netxen_receive_peg_ready(struct netxen_adapter *adapter)
777 {
778 u32 val = 0;
779 int retries = 2000;
780
781 do {
782 val = NXRD32(adapter, CRB_RCVPEG_STATE);
783
784 if (val == PHAN_PEG_RCV_INITIALIZED)
785 return 0;
786
787 msleep(10);
788
789 } while (--retries);
790
791 if (!retries) {
792 printk(KERN_ERR "Receive Peg initialization not "
793 "complete, state: 0x%x.\n", val);
794 return -EIO;
795 }
796
797 return 0;
798 }
799
800 int netxen_init_firmware(struct netxen_adapter *adapter)
801 {
802 int err;
803
804 err = netxen_receive_peg_ready(adapter);
805 if (err)
806 return err;
807
808 NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
809 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
810 NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
811 NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
812
813 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
814 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
815 }
816
817 return err;
818 }
819
820 static void
821 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
822 {
823 u32 cable_OUI;
824 u16 cable_len;
825 u16 link_speed;
826 u8 link_status, module, duplex, autoneg;
827 struct net_device *netdev = adapter->netdev;
828
829 adapter->has_link_events = 1;
830
831 cable_OUI = msg->body[1] & 0xffffffff;
832 cable_len = (msg->body[1] >> 32) & 0xffff;
833 link_speed = (msg->body[1] >> 48) & 0xffff;
834
835 link_status = msg->body[2] & 0xff;
836 duplex = (msg->body[2] >> 16) & 0xff;
837 autoneg = (msg->body[2] >> 24) & 0xff;
838
839 module = (msg->body[2] >> 8) & 0xff;
840 if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
841 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
842 netdev->name, cable_OUI, cable_len);
843 } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
844 printk(KERN_INFO "%s: unsupported cable length %d\n",
845 netdev->name, cable_len);
846 }
847
848 netxen_advert_link_change(adapter, link_status);
849
850 /* update link parameters */
851 if (duplex == LINKEVENT_FULL_DUPLEX)
852 adapter->link_duplex = DUPLEX_FULL;
853 else
854 adapter->link_duplex = DUPLEX_HALF;
855 adapter->module_type = module;
856 adapter->link_autoneg = autoneg;
857 adapter->link_speed = link_speed;
858 }
859
860 static void
861 netxen_handle_fw_message(int desc_cnt, int index,
862 struct nx_host_sds_ring *sds_ring)
863 {
864 nx_fw_msg_t msg;
865 struct status_desc *desc;
866 int i = 0, opcode;
867
868 while (desc_cnt > 0 && i < 8) {
869 desc = &sds_ring->desc_head[index];
870 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
871 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
872
873 index = get_next_index(index, sds_ring->num_desc);
874 desc_cnt--;
875 }
876
877 opcode = netxen_get_nic_msg_opcode(msg.body[0]);
878 switch (opcode) {
879 case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
880 netxen_handle_linkevent(sds_ring->adapter, &msg);
881 break;
882 default:
883 break;
884 }
885 }
886
887 static int
888 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
889 struct nx_host_rds_ring *rds_ring,
890 struct netxen_rx_buffer *buffer)
891 {
892 struct sk_buff *skb;
893 dma_addr_t dma;
894 struct pci_dev *pdev = adapter->pdev;
895
896 buffer->skb = dev_alloc_skb(rds_ring->skb_size);
897 if (!buffer->skb)
898 return 1;
899
900 skb = buffer->skb;
901
902 if (!adapter->ahw.cut_through)
903 skb_reserve(skb, 2);
904
905 dma = pci_map_single(pdev, skb->data,
906 rds_ring->dma_size, PCI_DMA_FROMDEVICE);
907
908 if (pci_dma_mapping_error(pdev, dma)) {
909 dev_kfree_skb_any(skb);
910 buffer->skb = NULL;
911 return 1;
912 }
913
914 buffer->skb = skb;
915 buffer->dma = dma;
916 buffer->state = NETXEN_BUFFER_BUSY;
917
918 return 0;
919 }
920
921 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
922 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
923 {
924 struct netxen_rx_buffer *buffer;
925 struct sk_buff *skb;
926
927 buffer = &rds_ring->rx_buf_arr[index];
928
929 pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
930 PCI_DMA_FROMDEVICE);
931
932 skb = buffer->skb;
933 if (!skb)
934 goto no_skb;
935
936 if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
937 adapter->stats.csummed++;
938 skb->ip_summed = CHECKSUM_UNNECESSARY;
939 } else
940 skb->ip_summed = CHECKSUM_NONE;
941
942 skb->dev = adapter->netdev;
943
944 buffer->skb = NULL;
945 no_skb:
946 buffer->state = NETXEN_BUFFER_FREE;
947 return skb;
948 }
949
950 static struct netxen_rx_buffer *
951 netxen_process_rcv(struct netxen_adapter *adapter,
952 int ring, int index, int length, int cksum, int pkt_offset,
953 struct nx_host_sds_ring *sds_ring)
954 {
955 struct net_device *netdev = adapter->netdev;
956 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
957 struct netxen_rx_buffer *buffer;
958 struct sk_buff *skb;
959 struct nx_host_rds_ring *rds_ring = &recv_ctx->rds_rings[ring];
960
961 if (unlikely(index > rds_ring->num_desc))
962 return NULL;
963
964 buffer = &rds_ring->rx_buf_arr[index];
965
966 skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
967 if (!skb)
968 return buffer;
969
970 if (length > rds_ring->skb_size)
971 skb_put(skb, rds_ring->skb_size);
972 else
973 skb_put(skb, length);
974
975
976 if (pkt_offset)
977 skb_pull(skb, pkt_offset);
978
979 skb->protocol = eth_type_trans(skb, netdev);
980
981 napi_gro_receive(&sds_ring->napi, skb);
982
983 adapter->stats.no_rcv++;
984 adapter->stats.rxbytes += length;
985
986 return buffer;
987 }
988
989 #define netxen_merge_rx_buffers(list, head) \
990 do { list_splice_tail_init(list, head); } while (0);
991
992 int
993 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
994 {
995 struct netxen_adapter *adapter = sds_ring->adapter;
996
997 struct list_head *cur;
998
999 struct status_desc *desc;
1000 struct netxen_rx_buffer *rxbuf;
1001
1002 u32 consumer = sds_ring->consumer;
1003
1004 int count = 0;
1005 u64 sts_data;
1006 int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
1007
1008 while (count < max) {
1009 desc = &sds_ring->desc_head[consumer];
1010 sts_data = le64_to_cpu(desc->status_desc_data[0]);
1011
1012 if (!(sts_data & STATUS_OWNER_HOST))
1013 break;
1014
1015 desc_cnt = netxen_get_sts_desc_cnt(sts_data);
1016 ring = netxen_get_sts_type(sts_data);
1017
1018 if (ring > RCV_RING_JUMBO)
1019 goto skip;
1020
1021 opcode = netxen_get_sts_opcode(sts_data);
1022
1023 switch (opcode) {
1024 case NETXEN_NIC_RXPKT_DESC:
1025 case NETXEN_OLD_RXPKT_DESC:
1026 break;
1027 case NETXEN_NIC_RESPONSE_DESC:
1028 netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1029 default:
1030 goto skip;
1031 }
1032
1033 WARN_ON(desc_cnt > 1);
1034
1035 index = netxen_get_sts_refhandle(sts_data);
1036 length = netxen_get_sts_totallength(sts_data);
1037 cksum = netxen_get_sts_status(sts_data);
1038 pkt_offset = netxen_get_sts_pkt_offset(sts_data);
1039
1040 rxbuf = netxen_process_rcv(adapter, ring, index,
1041 length, cksum, pkt_offset, sds_ring);
1042
1043 if (rxbuf)
1044 list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1045
1046 skip:
1047 for (; desc_cnt > 0; desc_cnt--) {
1048 desc = &sds_ring->desc_head[consumer];
1049 desc->status_desc_data[0] =
1050 cpu_to_le64(STATUS_OWNER_PHANTOM);
1051 consumer = get_next_index(consumer, sds_ring->num_desc);
1052 }
1053 count++;
1054 }
1055
1056 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1057 struct nx_host_rds_ring *rds_ring =
1058 &adapter->recv_ctx.rds_rings[ring];
1059
1060 if (!list_empty(&sds_ring->free_list[ring])) {
1061 list_for_each(cur, &sds_ring->free_list[ring]) {
1062 rxbuf = list_entry(cur,
1063 struct netxen_rx_buffer, list);
1064 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1065 }
1066 spin_lock(&rds_ring->lock);
1067 netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1068 &rds_ring->free_list);
1069 spin_unlock(&rds_ring->lock);
1070 }
1071
1072 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1073 }
1074
1075 if (count) {
1076 sds_ring->consumer = consumer;
1077 NXWR32(adapter, sds_ring->crb_sts_consumer, consumer);
1078 }
1079
1080 return count;
1081 }
1082
1083 /* Process Command status ring */
1084 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1085 {
1086 u32 sw_consumer, hw_consumer;
1087 int count = 0, i;
1088 struct netxen_cmd_buffer *buffer;
1089 struct pci_dev *pdev = adapter->pdev;
1090 struct net_device *netdev = adapter->netdev;
1091 struct netxen_skb_frag *frag;
1092 int done = 0;
1093 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1094
1095 if (!spin_trylock(&adapter->tx_clean_lock))
1096 return 1;
1097
1098 sw_consumer = tx_ring->sw_consumer;
1099 barrier(); /* hw_consumer can change underneath */
1100 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1101
1102 while (sw_consumer != hw_consumer) {
1103 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1104 if (buffer->skb) {
1105 frag = &buffer->frag_array[0];
1106 pci_unmap_single(pdev, frag->dma, frag->length,
1107 PCI_DMA_TODEVICE);
1108 frag->dma = 0ULL;
1109 for (i = 1; i < buffer->frag_count; i++) {
1110 frag++; /* Get the next frag */
1111 pci_unmap_page(pdev, frag->dma, frag->length,
1112 PCI_DMA_TODEVICE);
1113 frag->dma = 0ULL;
1114 }
1115
1116 adapter->stats.xmitfinished++;
1117 dev_kfree_skb_any(buffer->skb);
1118 buffer->skb = NULL;
1119 }
1120
1121 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1122 if (++count >= MAX_STATUS_HANDLE)
1123 break;
1124 }
1125
1126 if (count) {
1127 tx_ring->sw_consumer = sw_consumer;
1128 smp_mb();
1129 if (netif_queue_stopped(netdev) && netif_running(netdev)) {
1130 netif_tx_lock(netdev);
1131 netif_wake_queue(netdev);
1132 smp_mb();
1133 netif_tx_unlock(netdev);
1134 }
1135 }
1136 /*
1137 * If everything is freed up to consumer then check if the ring is full
1138 * If the ring is full then check if more needs to be freed and
1139 * schedule the call back again.
1140 *
1141 * This happens when there are 2 CPUs. One could be freeing and the
1142 * other filling it. If the ring is full when we get out of here and
1143 * the card has already interrupted the host then the host can miss the
1144 * interrupt.
1145 *
1146 * There is still a possible race condition and the host could miss an
1147 * interrupt. The card has to take care of this.
1148 */
1149 barrier(); /* hw_consumer can change underneath */
1150 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1151 done = (sw_consumer == hw_consumer);
1152 spin_unlock(&adapter->tx_clean_lock);
1153
1154 return (done);
1155 }
1156
1157 void
1158 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1159 struct nx_host_rds_ring *rds_ring)
1160 {
1161 struct rcv_desc *pdesc;
1162 struct netxen_rx_buffer *buffer;
1163 int producer, count = 0;
1164 netxen_ctx_msg msg = 0;
1165 struct list_head *head;
1166
1167 producer = rds_ring->producer;
1168
1169 spin_lock(&rds_ring->lock);
1170 head = &rds_ring->free_list;
1171 while (!list_empty(head)) {
1172
1173 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1174
1175 if (!buffer->skb) {
1176 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1177 break;
1178 }
1179
1180 count++;
1181 list_del(&buffer->list);
1182
1183 /* make a rcv descriptor */
1184 pdesc = &rds_ring->desc_head[producer];
1185 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1186 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1187 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1188
1189 producer = get_next_index(producer, rds_ring->num_desc);
1190 }
1191 spin_unlock(&rds_ring->lock);
1192
1193 if (count) {
1194 rds_ring->producer = producer;
1195 NXWR32(adapter, rds_ring->crb_rcv_producer,
1196 (producer-1) & (rds_ring->num_desc-1));
1197
1198 if (adapter->fw_major < 4) {
1199 /*
1200 * Write a doorbell msg to tell phanmon of change in
1201 * receive ring producer
1202 * Only for firmware version < 4.0.0
1203 */
1204 netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1205 netxen_set_msg_privid(msg);
1206 netxen_set_msg_count(msg,
1207 ((producer - 1) &
1208 (rds_ring->num_desc - 1)));
1209 netxen_set_msg_ctxid(msg, adapter->portnum);
1210 netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1211 writel(msg,
1212 DB_NORMALIZE(adapter,
1213 NETXEN_RCV_PRODUCER_OFFSET));
1214 }
1215 }
1216 }
1217
1218 static void
1219 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1220 struct nx_host_rds_ring *rds_ring)
1221 {
1222 struct rcv_desc *pdesc;
1223 struct netxen_rx_buffer *buffer;
1224 int producer, count = 0;
1225 struct list_head *head;
1226
1227 producer = rds_ring->producer;
1228 if (!spin_trylock(&rds_ring->lock))
1229 return;
1230
1231 head = &rds_ring->free_list;
1232 while (!list_empty(head)) {
1233
1234 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1235
1236 if (!buffer->skb) {
1237 if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1238 break;
1239 }
1240
1241 count++;
1242 list_del(&buffer->list);
1243
1244 /* make a rcv descriptor */
1245 pdesc = &rds_ring->desc_head[producer];
1246 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1247 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1248 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1249
1250 producer = get_next_index(producer, rds_ring->num_desc);
1251 }
1252
1253 if (count) {
1254 rds_ring->producer = producer;
1255 NXWR32(adapter, rds_ring->crb_rcv_producer,
1256 (producer - 1) & (rds_ring->num_desc - 1));
1257 wmb();
1258 }
1259 spin_unlock(&rds_ring->lock);
1260 }
1261
1262 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1263 {
1264 memset(&adapter->stats, 0, sizeof(adapter->stats));
1265 return;
1266 }
1267
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