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Merge branches 'at91', 'ep93xx', 'etm', 'ks8695', 'nuc', 'u300' and 'u8500' into...
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
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 LICENSE.
23 *
24 */
25
26 #include <linux/vmalloc.h>
27 #include <linux/interrupt.h>
28 #include "netxen_nic_hw.h"
29
30 #include "netxen_nic.h"
31
32 #include <linux/dma-mapping.h>
33 #include <linux/if_vlan.h>
34 #include <net/ip.h>
35 #include <linux/ipv6.h>
36 #include <linux/inetdevice.h>
37
38 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
41
42 char netxen_nic_driver_name[] = "netxen_nic";
43 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
44 NETXEN_NIC_LINUX_VERSIONID;
45
46 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
47
48 /* Default to restricted 1G auto-neg mode */
49 static int wol_port_mode = 5;
50
51 static int use_msi = 1;
52
53 static int use_msi_x = 1;
54
55 /* Local functions to NetXen NIC driver */
56 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
57 const struct pci_device_id *ent);
58 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
59 static int netxen_nic_open(struct net_device *netdev);
60 static int netxen_nic_close(struct net_device *netdev);
61 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
62 struct net_device *);
63 static void netxen_tx_timeout(struct net_device *netdev);
64 static void netxen_tx_timeout_task(struct work_struct *work);
65 static void netxen_fw_poll_work(struct work_struct *work);
66 static void netxen_schedule_work(struct netxen_adapter *adapter,
67 work_func_t func, int delay);
68 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
69 static int netxen_nic_poll(struct napi_struct *napi, int budget);
70 #ifdef CONFIG_NET_POLL_CONTROLLER
71 static void netxen_nic_poll_controller(struct net_device *netdev);
72 #endif
73
74 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
75 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
76
77 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
78 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
79
80 static irqreturn_t netxen_intr(int irq, void *data);
81 static irqreturn_t netxen_msi_intr(int irq, void *data);
82 static irqreturn_t netxen_msix_intr(int irq, void *data);
83
84 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
85
86 /* PCI Device ID Table */
87 #define ENTRY(device) \
88 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
89 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
90
91 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
92 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
93 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
94 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
95 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
96 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
97 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
98 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
99 ENTRY(PCI_DEVICE_ID_NX3031),
100 {0,}
101 };
102
103 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
104
105 static uint32_t crb_cmd_producer[4] = {
106 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
107 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
108 };
109
110 void
111 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
112 struct nx_host_tx_ring *tx_ring)
113 {
114 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
115
116 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
117 netif_stop_queue(adapter->netdev);
118 smp_mb();
119 }
120 }
121
122 static uint32_t crb_cmd_consumer[4] = {
123 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
124 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
125 };
126
127 static inline void
128 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
129 struct nx_host_tx_ring *tx_ring)
130 {
131 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
132 }
133
134 static uint32_t msi_tgt_status[8] = {
135 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
136 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
137 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
138 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
139 };
140
141 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
142
143 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
144 {
145 struct netxen_adapter *adapter = sds_ring->adapter;
146
147 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
148 }
149
150 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
151 {
152 struct netxen_adapter *adapter = sds_ring->adapter;
153
154 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
155
156 if (!NETXEN_IS_MSI_FAMILY(adapter))
157 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
158 }
159
160 static int
161 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
162 {
163 int size = sizeof(struct nx_host_sds_ring) * count;
164
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
166
167 return (recv_ctx->sds_rings == NULL);
168 }
169
170 static void
171 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
172 {
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
175
176 recv_ctx->sds_rings = NULL;
177 }
178
179 static int
180 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
181 {
182 int ring;
183 struct nx_host_sds_ring *sds_ring;
184 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
185
186 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
187 return -ENOMEM;
188
189 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
190 sds_ring = &recv_ctx->sds_rings[ring];
191 netif_napi_add(netdev, &sds_ring->napi,
192 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
193 }
194
195 return 0;
196 }
197
198 static void
199 netxen_napi_del(struct netxen_adapter *adapter)
200 {
201 int ring;
202 struct nx_host_sds_ring *sds_ring;
203 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
204
205 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
206 sds_ring = &recv_ctx->sds_rings[ring];
207 netif_napi_del(&sds_ring->napi);
208 }
209
210 netxen_free_sds_rings(&adapter->recv_ctx);
211 }
212
213 static void
214 netxen_napi_enable(struct netxen_adapter *adapter)
215 {
216 int ring;
217 struct nx_host_sds_ring *sds_ring;
218 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
219
220 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
221 sds_ring = &recv_ctx->sds_rings[ring];
222 napi_enable(&sds_ring->napi);
223 netxen_nic_enable_int(sds_ring);
224 }
225 }
226
227 static void
228 netxen_napi_disable(struct netxen_adapter *adapter)
229 {
230 int ring;
231 struct nx_host_sds_ring *sds_ring;
232 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
233
234 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
235 sds_ring = &recv_ctx->sds_rings[ring];
236 netxen_nic_disable_int(sds_ring);
237 napi_synchronize(&sds_ring->napi);
238 napi_disable(&sds_ring->napi);
239 }
240 }
241
242 static int nx_set_dma_mask(struct netxen_adapter *adapter)
243 {
244 struct pci_dev *pdev = adapter->pdev;
245 uint64_t mask, cmask;
246
247 adapter->pci_using_dac = 0;
248
249 mask = DMA_BIT_MASK(32);
250 cmask = DMA_BIT_MASK(32);
251
252 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
253 #ifndef CONFIG_IA64
254 mask = DMA_BIT_MASK(35);
255 #endif
256 } else {
257 mask = DMA_BIT_MASK(39);
258 cmask = mask;
259 }
260
261 if (pci_set_dma_mask(pdev, mask) == 0 &&
262 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
263 adapter->pci_using_dac = 1;
264 return 0;
265 }
266
267 return -EIO;
268 }
269
270 /* Update addressable range if firmware supports it */
271 static int
272 nx_update_dma_mask(struct netxen_adapter *adapter)
273 {
274 int change, shift, err;
275 uint64_t mask, old_mask, old_cmask;
276 struct pci_dev *pdev = adapter->pdev;
277
278 change = 0;
279
280 shift = NXRD32(adapter, CRB_DMA_SHIFT);
281 if (shift > 32)
282 return 0;
283
284 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
285 change = 1;
286 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
287 change = 1;
288
289 if (change) {
290 old_mask = pdev->dma_mask;
291 old_cmask = pdev->dev.coherent_dma_mask;
292
293 mask = DMA_BIT_MASK(32+shift);
294
295 err = pci_set_dma_mask(pdev, mask);
296 if (err)
297 goto err_out;
298
299 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
300
301 err = pci_set_consistent_dma_mask(pdev, mask);
302 if (err)
303 goto err_out;
304 }
305 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
306 }
307
308 return 0;
309
310 err_out:
311 pci_set_dma_mask(pdev, old_mask);
312 pci_set_consistent_dma_mask(pdev, old_cmask);
313 return err;
314 }
315
316 static int
317 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
318 {
319 u32 val, timeout;
320
321 if (first_boot == 0x55555555) {
322 /* This is the first boot after power up */
323 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
324
325 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
326 return 0;
327
328 /* PCI bus master workaround */
329 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
330 if (!(first_boot & 0x4)) {
331 first_boot |= 0x4;
332 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
334 }
335
336 /* This is the first boot after power up */
337 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
338 if (first_boot != 0x80000f) {
339 /* clear the register for future unloads/loads */
340 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
341 return -EIO;
342 }
343
344 /* Start P2 boot loader */
345 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
346 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
347 timeout = 0;
348 do {
349 msleep(1);
350 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
351
352 if (++timeout > 5000)
353 return -EIO;
354
355 } while (val == NETXEN_BDINFO_MAGIC);
356 }
357 return 0;
358 }
359
360 static void netxen_set_port_mode(struct netxen_adapter *adapter)
361 {
362 u32 val, data;
363
364 val = adapter->ahw.board_type;
365 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
366 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
367 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
368 data = NETXEN_PORT_MODE_802_3_AP;
369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
370 } else if (port_mode == NETXEN_PORT_MODE_XG) {
371 data = NETXEN_PORT_MODE_XG;
372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
373 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
374 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
376 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
377 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
379 } else {
380 data = NETXEN_PORT_MODE_AUTO_NEG;
381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
382 }
383
384 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
385 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
387 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
388 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
389 }
390 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
391 }
392 }
393
394 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
395 {
396 u32 control;
397 int pos;
398
399 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
400 if (pos) {
401 pci_read_config_dword(pdev, pos, &control);
402 if (enable)
403 control |= PCI_MSIX_FLAGS_ENABLE;
404 else
405 control = 0;
406 pci_write_config_dword(pdev, pos, control);
407 }
408 }
409
410 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
411 {
412 int i;
413
414 for (i = 0; i < count; i++)
415 adapter->msix_entries[i].entry = i;
416 }
417
418 static int
419 netxen_read_mac_addr(struct netxen_adapter *adapter)
420 {
421 int i;
422 unsigned char *p;
423 __le64 mac_addr;
424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
426
427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
429 return -EIO;
430 } else {
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
432 return -EIO;
433 }
434
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
438
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
440 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
441
442 /* set station address */
443
444 if (!is_valid_ether_addr(netdev->perm_addr))
445 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
446
447 return 0;
448 }
449
450 int netxen_nic_set_mac(struct net_device *netdev, void *p)
451 {
452 struct netxen_adapter *adapter = netdev_priv(netdev);
453 struct sockaddr *addr = p;
454
455 if (!is_valid_ether_addr(addr->sa_data))
456 return -EINVAL;
457
458 if (netif_running(netdev)) {
459 netif_device_detach(netdev);
460 netxen_napi_disable(adapter);
461 }
462
463 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
464 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
465 adapter->macaddr_set(adapter, addr->sa_data);
466
467 if (netif_running(netdev)) {
468 netif_device_attach(netdev);
469 netxen_napi_enable(adapter);
470 }
471 return 0;
472 }
473
474 static void netxen_set_multicast_list(struct net_device *dev)
475 {
476 struct netxen_adapter *adapter = netdev_priv(dev);
477
478 adapter->set_multi(dev);
479 }
480
481 static const struct net_device_ops netxen_netdev_ops = {
482 .ndo_open = netxen_nic_open,
483 .ndo_stop = netxen_nic_close,
484 .ndo_start_xmit = netxen_nic_xmit_frame,
485 .ndo_get_stats = netxen_nic_get_stats,
486 .ndo_validate_addr = eth_validate_addr,
487 .ndo_set_multicast_list = netxen_set_multicast_list,
488 .ndo_set_mac_address = netxen_nic_set_mac,
489 .ndo_change_mtu = netxen_nic_change_mtu,
490 .ndo_tx_timeout = netxen_tx_timeout,
491 #ifdef CONFIG_NET_POLL_CONTROLLER
492 .ndo_poll_controller = netxen_nic_poll_controller,
493 #endif
494 };
495
496 static void
497 netxen_setup_intr(struct netxen_adapter *adapter)
498 {
499 struct netxen_legacy_intr_set *legacy_intrp;
500 struct pci_dev *pdev = adapter->pdev;
501 int err, num_msix;
502
503 if (adapter->rss_supported) {
504 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
505 MSIX_ENTRIES_PER_ADAPTER : 2;
506 } else
507 num_msix = 1;
508
509 adapter->max_sds_rings = 1;
510
511 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
512
513 if (adapter->ahw.revision_id >= NX_P3_B0)
514 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
515 else
516 legacy_intrp = &legacy_intr[0];
517
518 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
519 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
520 legacy_intrp->tgt_status_reg);
521 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
522 legacy_intrp->tgt_mask_reg);
523 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
524 legacy_intrp->pci_int_reg);
525 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
526
527 if (adapter->ahw.revision_id >= NX_P3_B1)
528 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
529 ISR_INT_STATE_REG);
530 else
531 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
532 CRB_INT_VECTOR);
533
534 netxen_set_msix_bit(pdev, 0);
535
536 if (adapter->msix_supported) {
537
538 netxen_init_msix_entries(adapter, num_msix);
539 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
540 if (err == 0) {
541 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
542 netxen_set_msix_bit(pdev, 1);
543
544 if (adapter->rss_supported)
545 adapter->max_sds_rings = num_msix;
546
547 dev_info(&pdev->dev, "using msi-x interrupts\n");
548 return;
549 }
550
551 if (err > 0)
552 pci_disable_msix(pdev);
553
554 /* fall through for msi */
555 }
556
557 if (use_msi && !pci_enable_msi(pdev)) {
558 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
559 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
560 msi_tgt_status[adapter->ahw.pci_func]);
561 dev_info(&pdev->dev, "using msi interrupts\n");
562 adapter->msix_entries[0].vector = pdev->irq;
563 return;
564 }
565
566 dev_info(&pdev->dev, "using legacy interrupts\n");
567 adapter->msix_entries[0].vector = pdev->irq;
568 }
569
570 static void
571 netxen_teardown_intr(struct netxen_adapter *adapter)
572 {
573 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
574 pci_disable_msix(adapter->pdev);
575 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
576 pci_disable_msi(adapter->pdev);
577 }
578
579 static void
580 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
581 {
582 if (adapter->ahw.db_base != NULL)
583 iounmap(adapter->ahw.db_base);
584 if (adapter->ahw.pci_base0 != NULL)
585 iounmap(adapter->ahw.pci_base0);
586 if (adapter->ahw.pci_base1 != NULL)
587 iounmap(adapter->ahw.pci_base1);
588 if (adapter->ahw.pci_base2 != NULL)
589 iounmap(adapter->ahw.pci_base2);
590 }
591
592 static int
593 netxen_setup_pci_map(struct netxen_adapter *adapter)
594 {
595 void __iomem *mem_ptr0 = NULL;
596 void __iomem *mem_ptr1 = NULL;
597 void __iomem *mem_ptr2 = NULL;
598 void __iomem *db_ptr = NULL;
599
600 resource_size_t mem_base, db_base;
601 unsigned long mem_len, db_len = 0, pci_len0 = 0;
602
603 struct pci_dev *pdev = adapter->pdev;
604 int pci_func = adapter->ahw.pci_func;
605
606 int err = 0;
607
608 /*
609 * Set the CRB window to invalid. If any register in window 0 is
610 * accessed it should set the window to 0 and then reset it to 1.
611 */
612 adapter->curr_window = 255;
613 adapter->ahw.qdr_sn_window = -1;
614 adapter->ahw.ddr_mn_window = -1;
615
616 /* remap phys address */
617 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
618 mem_len = pci_resource_len(pdev, 0);
619 pci_len0 = 0;
620
621 /* 128 Meg of memory */
622 if (mem_len == NETXEN_PCI_128MB_SIZE) {
623 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
624 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
625 SECOND_PAGE_GROUP_SIZE);
626 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
627 THIRD_PAGE_GROUP_SIZE);
628 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
629 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
630 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
631 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
632 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
633
634 mem_ptr0 = pci_ioremap_bar(pdev, 0);
635 if (mem_ptr0 == NULL) {
636 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
637 return -EIO;
638 }
639 pci_len0 = mem_len;
640
641 adapter->ahw.ddr_mn_window = 0;
642 adapter->ahw.qdr_sn_window = 0;
643
644 adapter->ahw.mn_win_crb = NETXEN_PCI_CRBSPACE +
645 0x100000 + PCIX_MN_WINDOW + (pci_func * 0x20);
646 adapter->ahw.ms_win_crb = NETXEN_PCI_CRBSPACE +
647 0x100000 + PCIX_SN_WINDOW;
648 if (pci_func < 4)
649 adapter->ahw.ms_win_crb += (pci_func * 0x20);
650 else
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func - 4) * 0x10);
653 } else {
654 return -EIO;
655 }
656
657 netxen_setup_hwops(adapter);
658
659 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
660
661 adapter->ahw.pci_base0 = mem_ptr0;
662 adapter->ahw.pci_len0 = pci_len0;
663 adapter->ahw.pci_base1 = mem_ptr1;
664 adapter->ahw.pci_base2 = mem_ptr2;
665
666 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
667 goto skip_doorbell;
668
669 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
670 db_len = pci_resource_len(pdev, 4);
671
672 if (db_len == 0) {
673 printk(KERN_ERR "%s: doorbell is disabled\n",
674 netxen_nic_driver_name);
675 err = -EIO;
676 goto err_out;
677 }
678
679 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
680 if (!db_ptr) {
681 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
682 netxen_nic_driver_name);
683 err = -EIO;
684 goto err_out;
685 }
686
687 skip_doorbell:
688 adapter->ahw.db_base = db_ptr;
689 adapter->ahw.db_len = db_len;
690 return 0;
691
692 err_out:
693 netxen_cleanup_pci_map(adapter);
694 return err;
695 }
696
697 static void
698 netxen_check_options(struct netxen_adapter *adapter)
699 {
700 u32 fw_major, fw_minor, fw_build;
701 char brd_name[NETXEN_MAX_SHORT_NAME];
702 char serial_num[32];
703 int i, offset, val;
704 int *ptr32;
705 struct pci_dev *pdev = adapter->pdev;
706
707 adapter->driver_mismatch = 0;
708
709 ptr32 = (int *)&serial_num;
710 offset = NX_FW_SERIAL_NUM_OFFSET;
711 for (i = 0; i < 8; i++) {
712 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
713 dev_err(&pdev->dev, "error reading board info\n");
714 adapter->driver_mismatch = 1;
715 return;
716 }
717 ptr32[i] = cpu_to_le32(val);
718 offset += sizeof(u32);
719 }
720
721 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
722 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
723 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
724
725 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
726
727 if (adapter->portnum == 0) {
728 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
729
730 printk(KERN_INFO "NetXen %s Board S/N %s Chip rev 0x%x\n",
731 brd_name, serial_num, adapter->ahw.revision_id);
732 }
733
734 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
735 adapter->driver_mismatch = 1;
736 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
737 fw_major, fw_minor, fw_build);
738 return;
739 }
740
741 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
742 i = NXRD32(adapter, NETXEN_SRE_MISC);
743 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
744 }
745
746 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
747 fw_major, fw_minor, fw_build,
748 adapter->ahw.cut_through ? "cut-through" : "legacy");
749
750 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
751 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
752
753 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
754
755 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
756 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
757 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
758 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
759 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
760 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
761 }
762
763 adapter->msix_supported = 0;
764 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
765 adapter->msix_supported = !!use_msi_x;
766 adapter->rss_supported = !!use_msi_x;
767 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
768 switch (adapter->ahw.board_type) {
769 case NETXEN_BRDTYPE_P2_SB31_10G:
770 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
771 adapter->msix_supported = !!use_msi_x;
772 adapter->rss_supported = !!use_msi_x;
773 break;
774 default:
775 break;
776 }
777 }
778
779 adapter->num_txd = MAX_CMD_DESCRIPTORS;
780
781 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
782 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
783 adapter->max_rds_rings = 3;
784 } else {
785 adapter->num_lro_rxd = 0;
786 adapter->max_rds_rings = 2;
787 }
788 }
789
790 static int
791 netxen_start_firmware(struct netxen_adapter *adapter)
792 {
793 int val, err, first_boot;
794 struct pci_dev *pdev = adapter->pdev;
795
796 /* required for NX2031 dummy dma */
797 err = nx_set_dma_mask(adapter);
798 if (err)
799 return err;
800
801 if (!netxen_can_start_firmware(adapter))
802 goto wait_init;
803
804 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
805
806 err = netxen_check_hw_init(adapter, first_boot);
807 if (err) {
808 dev_err(&pdev->dev, "error in init HW init sequence\n");
809 return err;
810 }
811
812 netxen_request_firmware(adapter);
813
814 err = netxen_need_fw_reset(adapter);
815 if (err < 0)
816 goto err_out;
817 if (err == 0)
818 goto ready;
819
820 if (first_boot != 0x55555555) {
821 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
822 netxen_pinit_from_rom(adapter, 0);
823 msleep(1);
824 }
825
826 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
827 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
828 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
829
830 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
831 netxen_set_port_mode(adapter);
832
833 err = netxen_load_firmware(adapter);
834 if (err)
835 goto err_out;
836
837 netxen_release_firmware(adapter);
838
839 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
840
841 /* Initialize multicast addr pool owners */
842 val = 0x7654;
843 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
844 val |= 0x0f000000;
845 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
846
847 }
848
849 err = netxen_init_dummy_dma(adapter);
850 if (err)
851 goto err_out;
852
853 /*
854 * Tell the hardware our version number.
855 */
856 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
857 | ((_NETXEN_NIC_LINUX_MINOR << 8))
858 | (_NETXEN_NIC_LINUX_SUBVERSION);
859 NXWR32(adapter, CRB_DRIVER_VERSION, val);
860
861 ready:
862 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
863
864 wait_init:
865 /* Handshake with the card before we register the devices. */
866 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
867 if (err) {
868 netxen_free_dummy_dma(adapter);
869 goto err_out;
870 }
871
872 nx_update_dma_mask(adapter);
873
874 netxen_check_options(adapter);
875
876 adapter->need_fw_reset = 0;
877
878 /* fall through and release firmware */
879
880 err_out:
881 netxen_release_firmware(adapter);
882 return err;
883 }
884
885 static int
886 netxen_nic_request_irq(struct netxen_adapter *adapter)
887 {
888 irq_handler_t handler;
889 struct nx_host_sds_ring *sds_ring;
890 int err, ring;
891
892 unsigned long flags = IRQF_SAMPLE_RANDOM;
893 struct net_device *netdev = adapter->netdev;
894 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
895
896 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
897 handler = netxen_msix_intr;
898 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
899 handler = netxen_msi_intr;
900 else {
901 flags |= IRQF_SHARED;
902 handler = netxen_intr;
903 }
904 adapter->irq = netdev->irq;
905
906 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
907 sds_ring = &recv_ctx->sds_rings[ring];
908 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
909 err = request_irq(sds_ring->irq, handler,
910 flags, sds_ring->name, sds_ring);
911 if (err)
912 return err;
913 }
914
915 return 0;
916 }
917
918 static void
919 netxen_nic_free_irq(struct netxen_adapter *adapter)
920 {
921 int ring;
922 struct nx_host_sds_ring *sds_ring;
923
924 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
925
926 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
927 sds_ring = &recv_ctx->sds_rings[ring];
928 free_irq(sds_ring->irq, sds_ring);
929 }
930 }
931
932 static void
933 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
934 {
935 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
936 adapter->coal.normal.data.rx_time_us =
937 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
938 adapter->coal.normal.data.rx_packets =
939 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
940 adapter->coal.normal.data.tx_time_us =
941 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
942 adapter->coal.normal.data.tx_packets =
943 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
944 }
945
946 static int
947 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
948 {
949 int err;
950
951 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
952 return -EIO;
953
954 err = adapter->init_port(adapter, adapter->physical_port);
955 if (err) {
956 printk(KERN_ERR "%s: Failed to initialize port %d\n",
957 netxen_nic_driver_name, adapter->portnum);
958 return err;
959 }
960 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
961 adapter->macaddr_set(adapter, adapter->mac_addr);
962
963 adapter->set_multi(netdev);
964 adapter->set_mtu(adapter, netdev->mtu);
965
966 adapter->ahw.linkup = 0;
967
968 if (adapter->max_sds_rings > 1)
969 netxen_config_rss(adapter, 1);
970
971 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
972 netxen_config_intr_coalesce(adapter);
973
974 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
975 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
976
977 netxen_napi_enable(adapter);
978
979 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
980 netxen_linkevent_request(adapter, 1);
981 else
982 netxen_nic_set_link_parameters(adapter);
983
984 set_bit(__NX_DEV_UP, &adapter->state);
985 return 0;
986 }
987
988 static void
989 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
990 {
991 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
992 return;
993
994 clear_bit(__NX_DEV_UP, &adapter->state);
995
996 spin_lock(&adapter->tx_clean_lock);
997 netif_carrier_off(netdev);
998 netif_tx_disable(netdev);
999
1000 if (adapter->stop_port)
1001 adapter->stop_port(adapter);
1002
1003 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1004 netxen_p3_free_mac_list(adapter);
1005
1006 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1007
1008 netxen_napi_disable(adapter);
1009
1010 netxen_release_tx_buffers(adapter);
1011 spin_unlock(&adapter->tx_clean_lock);
1012 }
1013
1014
1015 static int
1016 netxen_nic_attach(struct netxen_adapter *adapter)
1017 {
1018 struct net_device *netdev = adapter->netdev;
1019 struct pci_dev *pdev = adapter->pdev;
1020 int err, ring;
1021 struct nx_host_rds_ring *rds_ring;
1022 struct nx_host_tx_ring *tx_ring;
1023
1024 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1025 return 0;
1026
1027 err = netxen_init_firmware(adapter);
1028 if (err)
1029 return err;
1030
1031 err = netxen_napi_add(adapter, netdev);
1032 if (err)
1033 return err;
1034
1035 err = netxen_alloc_sw_resources(adapter);
1036 if (err) {
1037 printk(KERN_ERR "%s: Error in setting sw resources\n",
1038 netdev->name);
1039 return err;
1040 }
1041
1042 err = netxen_alloc_hw_resources(adapter);
1043 if (err) {
1044 printk(KERN_ERR "%s: Error in setting hw resources\n",
1045 netdev->name);
1046 goto err_out_free_sw;
1047 }
1048
1049 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1050 tx_ring = adapter->tx_ring;
1051 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1052 crb_cmd_producer[adapter->portnum]);
1053 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1054 crb_cmd_consumer[adapter->portnum]);
1055
1056 tx_ring->producer = 0;
1057 tx_ring->sw_consumer = 0;
1058
1059 netxen_nic_update_cmd_producer(adapter, tx_ring);
1060 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1061 }
1062
1063 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1064 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1065 netxen_post_rx_buffers(adapter, ring, rds_ring);
1066 }
1067
1068 err = netxen_nic_request_irq(adapter);
1069 if (err) {
1070 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1071 netdev->name);
1072 goto err_out_free_rxbuf;
1073 }
1074
1075 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1076 netxen_nic_init_coalesce_defaults(adapter);
1077
1078 netxen_create_sysfs_entries(adapter);
1079
1080 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1081 return 0;
1082
1083 err_out_free_rxbuf:
1084 netxen_release_rx_buffers(adapter);
1085 netxen_free_hw_resources(adapter);
1086 err_out_free_sw:
1087 netxen_free_sw_resources(adapter);
1088 return err;
1089 }
1090
1091 static void
1092 netxen_nic_detach(struct netxen_adapter *adapter)
1093 {
1094 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1095 return;
1096
1097 netxen_remove_sysfs_entries(adapter);
1098
1099 netxen_free_hw_resources(adapter);
1100 netxen_release_rx_buffers(adapter);
1101 netxen_nic_free_irq(adapter);
1102 netxen_napi_del(adapter);
1103 netxen_free_sw_resources(adapter);
1104
1105 adapter->is_up = 0;
1106 }
1107
1108 int
1109 netxen_nic_reset_context(struct netxen_adapter *adapter)
1110 {
1111 int err = 0;
1112 struct net_device *netdev = adapter->netdev;
1113
1114 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1115 return -EBUSY;
1116
1117 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1118
1119 netif_device_detach(netdev);
1120
1121 if (netif_running(netdev))
1122 netxen_nic_down(adapter, netdev);
1123
1124 netxen_nic_detach(adapter);
1125
1126 if (netif_running(netdev)) {
1127 err = netxen_nic_attach(adapter);
1128 if (!err)
1129 err = netxen_nic_up(adapter, netdev);
1130
1131 if (err)
1132 goto done;
1133 }
1134
1135 netif_device_attach(netdev);
1136 }
1137
1138 done:
1139 clear_bit(__NX_RESETTING, &adapter->state);
1140 return err;
1141 }
1142
1143 static int
1144 netxen_setup_netdev(struct netxen_adapter *adapter,
1145 struct net_device *netdev)
1146 {
1147 int err = 0;
1148 struct pci_dev *pdev = adapter->pdev;
1149
1150 adapter->rx_csum = 1;
1151 adapter->mc_enabled = 0;
1152 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1153 adapter->max_mc_count = 38;
1154 else
1155 adapter->max_mc_count = 16;
1156
1157 netdev->netdev_ops = &netxen_netdev_ops;
1158 netdev->watchdog_timeo = 2*HZ;
1159
1160 netxen_nic_change_mtu(netdev, netdev->mtu);
1161
1162 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1163
1164 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1165 netdev->features |= (NETIF_F_GRO);
1166 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1167
1168 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1169 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1170 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1171 }
1172
1173 if (adapter->pci_using_dac) {
1174 netdev->features |= NETIF_F_HIGHDMA;
1175 netdev->vlan_features |= NETIF_F_HIGHDMA;
1176 }
1177
1178 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1179 netdev->features |= (NETIF_F_HW_VLAN_TX);
1180
1181 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1182 netdev->features |= NETIF_F_LRO;
1183
1184 netdev->irq = adapter->msix_entries[0].vector;
1185
1186 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1187
1188 if (netxen_read_mac_addr(adapter))
1189 dev_warn(&pdev->dev, "failed to read mac addr\n");
1190
1191 netif_carrier_off(netdev);
1192 netif_stop_queue(netdev);
1193
1194 err = register_netdev(netdev);
1195 if (err) {
1196 dev_err(&pdev->dev, "failed to register net device\n");
1197 return err;
1198 }
1199
1200 return 0;
1201 }
1202
1203 static int __devinit
1204 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1205 {
1206 struct net_device *netdev = NULL;
1207 struct netxen_adapter *adapter = NULL;
1208 int i = 0, err;
1209 int pci_func_id = PCI_FUNC(pdev->devfn);
1210 uint8_t revision_id;
1211
1212 if (pdev->class != 0x020000) {
1213 printk(KERN_DEBUG "NetXen function %d, class %x will not "
1214 "be enabled.\n",pci_func_id, pdev->class);
1215 return -ENODEV;
1216 }
1217
1218 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1219 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1220 "will not be enabled.\n",
1221 NX_P3_A0, NX_P3_B1);
1222 return -ENODEV;
1223 }
1224
1225 if ((err = pci_enable_device(pdev)))
1226 return err;
1227
1228 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1229 err = -ENODEV;
1230 goto err_out_disable_pdev;
1231 }
1232
1233 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1234 goto err_out_disable_pdev;
1235
1236 pci_set_master(pdev);
1237
1238 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1239 if(!netdev) {
1240 dev_err(&pdev->dev, "failed to allocate net_device\n");
1241 err = -ENOMEM;
1242 goto err_out_free_res;
1243 }
1244
1245 SET_NETDEV_DEV(netdev, &pdev->dev);
1246
1247 adapter = netdev_priv(netdev);
1248 adapter->netdev = netdev;
1249 adapter->pdev = pdev;
1250 adapter->ahw.pci_func = pci_func_id;
1251
1252 revision_id = pdev->revision;
1253 adapter->ahw.revision_id = revision_id;
1254
1255 rwlock_init(&adapter->adapter_lock);
1256 spin_lock_init(&adapter->tx_clean_lock);
1257 INIT_LIST_HEAD(&adapter->mac_list);
1258
1259 err = netxen_setup_pci_map(adapter);
1260 if (err)
1261 goto err_out_free_netdev;
1262
1263 /* This will be reset for mezz cards */
1264 adapter->portnum = pci_func_id;
1265
1266 err = netxen_nic_get_board_info(adapter);
1267 if (err) {
1268 dev_err(&pdev->dev, "Error getting board config info.\n");
1269 goto err_out_iounmap;
1270 }
1271
1272 /* Mezz cards have PCI function 0,2,3 enabled */
1273 switch (adapter->ahw.board_type) {
1274 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1275 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1276 if (pci_func_id >= 2)
1277 adapter->portnum = pci_func_id - 2;
1278 break;
1279 default:
1280 break;
1281 }
1282
1283 err = netxen_start_firmware(adapter);
1284 if (err)
1285 goto err_out_iounmap;
1286
1287 /*
1288 * See if the firmware gave us a virtual-physical port mapping.
1289 */
1290 adapter->physical_port = adapter->portnum;
1291 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1292 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1293 if (i != 0x55555555)
1294 adapter->physical_port = i;
1295 }
1296
1297 netxen_nic_clear_stats(adapter);
1298
1299 netxen_setup_intr(adapter);
1300
1301 err = netxen_setup_netdev(adapter, netdev);
1302 if (err)
1303 goto err_out_disable_msi;
1304
1305 pci_set_drvdata(pdev, adapter);
1306
1307 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1308
1309 switch (adapter->ahw.port_type) {
1310 case NETXEN_NIC_GBE:
1311 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1312 adapter->netdev->name);
1313 break;
1314 case NETXEN_NIC_XGBE:
1315 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1316 adapter->netdev->name);
1317 break;
1318 }
1319
1320 return 0;
1321
1322 err_out_disable_msi:
1323 netxen_teardown_intr(adapter);
1324
1325 netxen_free_dummy_dma(adapter);
1326
1327 nx_decr_dev_ref_cnt(adapter);
1328
1329 err_out_iounmap:
1330 netxen_cleanup_pci_map(adapter);
1331
1332 err_out_free_netdev:
1333 free_netdev(netdev);
1334
1335 err_out_free_res:
1336 pci_release_regions(pdev);
1337
1338 err_out_disable_pdev:
1339 pci_set_drvdata(pdev, NULL);
1340 pci_disable_device(pdev);
1341 return err;
1342 }
1343
1344 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1345 {
1346 struct netxen_adapter *adapter;
1347 struct net_device *netdev;
1348
1349 adapter = pci_get_drvdata(pdev);
1350 if (adapter == NULL)
1351 return;
1352
1353 netdev = adapter->netdev;
1354
1355 netxen_cancel_fw_work(adapter);
1356
1357 unregister_netdev(netdev);
1358
1359 cancel_work_sync(&adapter->tx_timeout_task);
1360
1361 netxen_nic_detach(adapter);
1362
1363 nx_decr_dev_ref_cnt(adapter);
1364
1365 if (adapter->portnum == 0)
1366 netxen_free_dummy_dma(adapter);
1367
1368 clear_bit(__NX_RESETTING, &adapter->state);
1369
1370 netxen_teardown_intr(adapter);
1371
1372 netxen_cleanup_pci_map(adapter);
1373
1374 netxen_release_firmware(adapter);
1375
1376 pci_release_regions(pdev);
1377 pci_disable_device(pdev);
1378 pci_set_drvdata(pdev, NULL);
1379
1380 free_netdev(netdev);
1381 }
1382 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1383 {
1384 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1385 struct net_device *netdev = adapter->netdev;
1386 int retval;
1387
1388 netif_device_detach(netdev);
1389
1390 netxen_cancel_fw_work(adapter);
1391
1392 if (netif_running(netdev))
1393 netxen_nic_down(adapter, netdev);
1394
1395 cancel_work_sync(&adapter->tx_timeout_task);
1396
1397 netxen_nic_detach(adapter);
1398
1399 if (adapter->portnum == 0)
1400 netxen_free_dummy_dma(adapter);
1401
1402 nx_decr_dev_ref_cnt(adapter);
1403
1404 clear_bit(__NX_RESETTING, &adapter->state);
1405
1406 retval = pci_save_state(pdev);
1407 if (retval)
1408 return retval;
1409
1410 if (netxen_nic_wol_supported(adapter)) {
1411 pci_enable_wake(pdev, PCI_D3cold, 1);
1412 pci_enable_wake(pdev, PCI_D3hot, 1);
1413 }
1414
1415 pci_disable_device(pdev);
1416
1417 return 0;
1418 }
1419 static void netxen_nic_shutdown(struct pci_dev *pdev)
1420 {
1421 if (__netxen_nic_shutdown(pdev))
1422 return;
1423 }
1424 #ifdef CONFIG_PM
1425 static int
1426 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1427 {
1428 int retval;
1429
1430 retval = __netxen_nic_shutdown(pdev);
1431 if (retval)
1432 return retval;
1433
1434 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1435 return 0;
1436 }
1437
1438 static int
1439 netxen_nic_resume(struct pci_dev *pdev)
1440 {
1441 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1442 struct net_device *netdev = adapter->netdev;
1443 int err;
1444
1445 pci_set_power_state(pdev, PCI_D0);
1446 pci_restore_state(pdev);
1447
1448 err = pci_enable_device(pdev);
1449 if (err)
1450 return err;
1451
1452 adapter->curr_window = 255;
1453
1454 err = netxen_start_firmware(adapter);
1455 if (err) {
1456 dev_err(&pdev->dev, "failed to start firmware\n");
1457 return err;
1458 }
1459
1460 if (netif_running(netdev)) {
1461 err = netxen_nic_attach(adapter);
1462 if (err)
1463 goto err_out;
1464
1465 err = netxen_nic_up(adapter, netdev);
1466 if (err)
1467 goto err_out_detach;
1468
1469 netif_device_attach(netdev);
1470
1471 netxen_config_indev_addr(netdev, NETDEV_UP);
1472 }
1473
1474 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1475 return 0;
1476
1477 err_out_detach:
1478 netxen_nic_detach(adapter);
1479 err_out:
1480 nx_decr_dev_ref_cnt(adapter);
1481 return err;
1482 }
1483 #endif
1484
1485 static int netxen_nic_open(struct net_device *netdev)
1486 {
1487 struct netxen_adapter *adapter = netdev_priv(netdev);
1488 int err = 0;
1489
1490 if (adapter->driver_mismatch)
1491 return -EIO;
1492
1493 err = netxen_nic_attach(adapter);
1494 if (err)
1495 return err;
1496
1497 err = netxen_nic_up(adapter, netdev);
1498 if (err)
1499 goto err_out;
1500
1501 netif_start_queue(netdev);
1502
1503 return 0;
1504
1505 err_out:
1506 netxen_nic_detach(adapter);
1507 return err;
1508 }
1509
1510 /*
1511 * netxen_nic_close - Disables a network interface entry point
1512 */
1513 static int netxen_nic_close(struct net_device *netdev)
1514 {
1515 struct netxen_adapter *adapter = netdev_priv(netdev);
1516
1517 netxen_nic_down(adapter, netdev);
1518 return 0;
1519 }
1520
1521 static void
1522 netxen_tso_check(struct net_device *netdev,
1523 struct nx_host_tx_ring *tx_ring,
1524 struct cmd_desc_type0 *first_desc,
1525 struct sk_buff *skb)
1526 {
1527 u8 opcode = TX_ETHER_PKT;
1528 __be16 protocol = skb->protocol;
1529 u16 flags = 0, vid = 0;
1530 u32 producer;
1531 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1532 struct cmd_desc_type0 *hwdesc;
1533 struct vlan_ethhdr *vh;
1534
1535 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1536
1537 vh = (struct vlan_ethhdr *)skb->data;
1538 protocol = vh->h_vlan_encapsulated_proto;
1539 flags = FLAGS_VLAN_TAGGED;
1540
1541 } else if (vlan_tx_tag_present(skb)) {
1542
1543 flags = FLAGS_VLAN_OOB;
1544 vid = vlan_tx_tag_get(skb);
1545 netxen_set_tx_vlan_tci(first_desc, vid);
1546 vlan_oob = 1;
1547 }
1548
1549 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1550 skb_shinfo(skb)->gso_size > 0) {
1551
1552 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1553
1554 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1555 first_desc->total_hdr_length = hdr_len;
1556 if (vlan_oob) {
1557 first_desc->total_hdr_length += VLAN_HLEN;
1558 first_desc->tcp_hdr_offset = VLAN_HLEN;
1559 first_desc->ip_hdr_offset = VLAN_HLEN;
1560 /* Only in case of TSO on vlan device */
1561 flags |= FLAGS_VLAN_TAGGED;
1562 }
1563
1564 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1565 TX_TCP_LSO6 : TX_TCP_LSO;
1566 tso = 1;
1567
1568 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1569 u8 l4proto;
1570
1571 if (protocol == cpu_to_be16(ETH_P_IP)) {
1572 l4proto = ip_hdr(skb)->protocol;
1573
1574 if (l4proto == IPPROTO_TCP)
1575 opcode = TX_TCP_PKT;
1576 else if(l4proto == IPPROTO_UDP)
1577 opcode = TX_UDP_PKT;
1578 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1579 l4proto = ipv6_hdr(skb)->nexthdr;
1580
1581 if (l4proto == IPPROTO_TCP)
1582 opcode = TX_TCPV6_PKT;
1583 else if(l4proto == IPPROTO_UDP)
1584 opcode = TX_UDPV6_PKT;
1585 }
1586 }
1587
1588 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1589 first_desc->ip_hdr_offset += skb_network_offset(skb);
1590 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1591
1592 if (!tso)
1593 return;
1594
1595 /* For LSO, we need to copy the MAC/IP/TCP headers into
1596 * the descriptor ring
1597 */
1598 producer = tx_ring->producer;
1599 copied = 0;
1600 offset = 2;
1601
1602 if (vlan_oob) {
1603 /* Create a TSO vlan header template for firmware */
1604
1605 hwdesc = &tx_ring->desc_head[producer];
1606 tx_ring->cmd_buf_arr[producer].skb = NULL;
1607
1608 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1609 hdr_len + VLAN_HLEN);
1610
1611 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1612 skb_copy_from_linear_data(skb, vh, 12);
1613 vh->h_vlan_proto = htons(ETH_P_8021Q);
1614 vh->h_vlan_TCI = htons(vid);
1615 skb_copy_from_linear_data_offset(skb, 12,
1616 (char *)vh + 16, copy_len - 16);
1617
1618 copied = copy_len - VLAN_HLEN;
1619 offset = 0;
1620
1621 producer = get_next_index(producer, tx_ring->num_desc);
1622 }
1623
1624 while (copied < hdr_len) {
1625
1626 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1627 (hdr_len - copied));
1628
1629 hwdesc = &tx_ring->desc_head[producer];
1630 tx_ring->cmd_buf_arr[producer].skb = NULL;
1631
1632 skb_copy_from_linear_data_offset(skb, copied,
1633 (char *)hwdesc + offset, copy_len);
1634
1635 copied += copy_len;
1636 offset = 0;
1637
1638 producer = get_next_index(producer, tx_ring->num_desc);
1639 }
1640
1641 tx_ring->producer = producer;
1642 barrier();
1643 }
1644
1645 static int
1646 netxen_map_tx_skb(struct pci_dev *pdev,
1647 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1648 {
1649 struct netxen_skb_frag *nf;
1650 struct skb_frag_struct *frag;
1651 int i, nr_frags;
1652 dma_addr_t map;
1653
1654 nr_frags = skb_shinfo(skb)->nr_frags;
1655 nf = &pbuf->frag_array[0];
1656
1657 map = pci_map_single(pdev, skb->data,
1658 skb_headlen(skb), PCI_DMA_TODEVICE);
1659 if (pci_dma_mapping_error(pdev, map))
1660 goto out_err;
1661
1662 nf->dma = map;
1663 nf->length = skb_headlen(skb);
1664
1665 for (i = 0; i < nr_frags; i++) {
1666 frag = &skb_shinfo(skb)->frags[i];
1667 nf = &pbuf->frag_array[i+1];
1668
1669 map = pci_map_page(pdev, frag->page, frag->page_offset,
1670 frag->size, PCI_DMA_TODEVICE);
1671 if (pci_dma_mapping_error(pdev, map))
1672 goto unwind;
1673
1674 nf->dma = map;
1675 nf->length = frag->size;
1676 }
1677
1678 return 0;
1679
1680 unwind:
1681 while (--i >= 0) {
1682 nf = &pbuf->frag_array[i+1];
1683 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1684 }
1685
1686 nf = &pbuf->frag_array[0];
1687 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1688
1689 out_err:
1690 return -ENOMEM;
1691 }
1692
1693 static inline void
1694 netxen_clear_cmddesc(u64 *desc)
1695 {
1696 desc[0] = 0ULL;
1697 desc[2] = 0ULL;
1698 }
1699
1700 static netdev_tx_t
1701 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1702 {
1703 struct netxen_adapter *adapter = netdev_priv(netdev);
1704 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1705 struct netxen_cmd_buffer *pbuf;
1706 struct netxen_skb_frag *buffrag;
1707 struct cmd_desc_type0 *hwdesc, *first_desc;
1708 struct pci_dev *pdev;
1709 int i, k;
1710
1711 u32 producer;
1712 int frag_count, no_of_desc;
1713 u32 num_txd = tx_ring->num_desc;
1714
1715 frag_count = skb_shinfo(skb)->nr_frags + 1;
1716
1717 /* 4 fragments per cmd des */
1718 no_of_desc = (frag_count + 3) >> 2;
1719
1720 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
1721 netif_stop_queue(netdev);
1722 return NETDEV_TX_BUSY;
1723 }
1724
1725 producer = tx_ring->producer;
1726 pbuf = &tx_ring->cmd_buf_arr[producer];
1727
1728 pdev = adapter->pdev;
1729
1730 if (netxen_map_tx_skb(pdev, skb, pbuf))
1731 goto drop_packet;
1732
1733 pbuf->skb = skb;
1734 pbuf->frag_count = frag_count;
1735
1736 first_desc = hwdesc = &tx_ring->desc_head[producer];
1737 netxen_clear_cmddesc((u64 *)hwdesc);
1738
1739 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1740 netxen_set_tx_port(first_desc, adapter->portnum);
1741
1742 for (i = 0; i < frag_count; i++) {
1743
1744 k = i % 4;
1745
1746 if ((k == 0) && (i > 0)) {
1747 /* move to next desc.*/
1748 producer = get_next_index(producer, num_txd);
1749 hwdesc = &tx_ring->desc_head[producer];
1750 netxen_clear_cmddesc((u64 *)hwdesc);
1751 tx_ring->cmd_buf_arr[producer].skb = NULL;
1752 }
1753
1754 buffrag = &pbuf->frag_array[i];
1755
1756 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1757 switch (k) {
1758 case 0:
1759 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1760 break;
1761 case 1:
1762 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1763 break;
1764 case 2:
1765 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1766 break;
1767 case 3:
1768 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1769 break;
1770 }
1771 }
1772
1773 tx_ring->producer = get_next_index(producer, num_txd);
1774
1775 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1776
1777 netxen_nic_update_cmd_producer(adapter, tx_ring);
1778
1779 adapter->stats.txbytes += skb->len;
1780 adapter->stats.xmitcalled++;
1781
1782 return NETDEV_TX_OK;
1783
1784 drop_packet:
1785 adapter->stats.txdropped++;
1786 dev_kfree_skb_any(skb);
1787 return NETDEV_TX_OK;
1788 }
1789
1790 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1791 {
1792 struct net_device *netdev = adapter->netdev;
1793 uint32_t temp, temp_state, temp_val;
1794 int rv = 0;
1795
1796 temp = NXRD32(adapter, CRB_TEMP_STATE);
1797
1798 temp_state = nx_get_temp_state(temp);
1799 temp_val = nx_get_temp_val(temp);
1800
1801 if (temp_state == NX_TEMP_PANIC) {
1802 printk(KERN_ALERT
1803 "%s: Device temperature %d degrees C exceeds"
1804 " maximum allowed. Hardware has been shut down.\n",
1805 netdev->name, temp_val);
1806 rv = 1;
1807 } else if (temp_state == NX_TEMP_WARN) {
1808 if (adapter->temp == NX_TEMP_NORMAL) {
1809 printk(KERN_ALERT
1810 "%s: Device temperature %d degrees C "
1811 "exceeds operating range."
1812 " Immediate action needed.\n",
1813 netdev->name, temp_val);
1814 }
1815 } else {
1816 if (adapter->temp == NX_TEMP_WARN) {
1817 printk(KERN_INFO
1818 "%s: Device temperature is now %d degrees C"
1819 " in normal range.\n", netdev->name,
1820 temp_val);
1821 }
1822 }
1823 adapter->temp = temp_state;
1824 return rv;
1825 }
1826
1827 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1828 {
1829 struct net_device *netdev = adapter->netdev;
1830
1831 if (adapter->ahw.linkup && !linkup) {
1832 printk(KERN_INFO "%s: %s NIC Link is down\n",
1833 netxen_nic_driver_name, netdev->name);
1834 adapter->ahw.linkup = 0;
1835 if (netif_running(netdev)) {
1836 netif_carrier_off(netdev);
1837 netif_stop_queue(netdev);
1838 }
1839 adapter->link_changed = !adapter->has_link_events;
1840 } else if (!adapter->ahw.linkup && linkup) {
1841 printk(KERN_INFO "%s: %s NIC Link is up\n",
1842 netxen_nic_driver_name, netdev->name);
1843 adapter->ahw.linkup = 1;
1844 if (netif_running(netdev)) {
1845 netif_carrier_on(netdev);
1846 netif_wake_queue(netdev);
1847 }
1848 adapter->link_changed = !adapter->has_link_events;
1849 }
1850 }
1851
1852 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1853 {
1854 u32 val, port, linkup;
1855
1856 port = adapter->physical_port;
1857
1858 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1859 val = NXRD32(adapter, CRB_XG_STATE_P3);
1860 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1861 linkup = (val == XG_LINK_UP_P3);
1862 } else {
1863 val = NXRD32(adapter, CRB_XG_STATE);
1864 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1865 linkup = (val >> port) & 1;
1866 else {
1867 val = (val >> port*8) & 0xff;
1868 linkup = (val == XG_LINK_UP);
1869 }
1870 }
1871
1872 netxen_advert_link_change(adapter, linkup);
1873 }
1874
1875 static void netxen_tx_timeout(struct net_device *netdev)
1876 {
1877 struct netxen_adapter *adapter = netdev_priv(netdev);
1878
1879 if (test_bit(__NX_RESETTING, &adapter->state))
1880 return;
1881
1882 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1883 schedule_work(&adapter->tx_timeout_task);
1884 }
1885
1886 static void netxen_tx_timeout_task(struct work_struct *work)
1887 {
1888 struct netxen_adapter *adapter =
1889 container_of(work, struct netxen_adapter, tx_timeout_task);
1890
1891 if (!netif_running(adapter->netdev))
1892 return;
1893
1894 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1895 return;
1896
1897 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1898 goto request_reset;
1899
1900 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1901 /* try to scrub interrupt */
1902 netxen_napi_disable(adapter);
1903
1904 adapter->netdev->trans_start = jiffies;
1905
1906 netxen_napi_enable(adapter);
1907
1908 netif_wake_queue(adapter->netdev);
1909
1910 clear_bit(__NX_RESETTING, &adapter->state);
1911
1912 } else {
1913 clear_bit(__NX_RESETTING, &adapter->state);
1914 if (!netxen_nic_reset_context(adapter)) {
1915 adapter->netdev->trans_start = jiffies;
1916 return;
1917 }
1918
1919 /* context reset failed, fall through for fw reset */
1920 }
1921
1922 request_reset:
1923 adapter->need_fw_reset = 1;
1924 clear_bit(__NX_RESETTING, &adapter->state);
1925 }
1926
1927 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1928 {
1929 struct netxen_adapter *adapter = netdev_priv(netdev);
1930 struct net_device_stats *stats = &adapter->net_stats;
1931
1932 memset(stats, 0, sizeof(*stats));
1933
1934 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1935 stats->tx_packets = adapter->stats.xmitfinished;
1936 stats->rx_bytes = adapter->stats.rxbytes;
1937 stats->tx_bytes = adapter->stats.txbytes;
1938 stats->rx_dropped = adapter->stats.rxdropped;
1939 stats->tx_dropped = adapter->stats.txdropped;
1940
1941 return stats;
1942 }
1943
1944 static irqreturn_t netxen_intr(int irq, void *data)
1945 {
1946 struct nx_host_sds_ring *sds_ring = data;
1947 struct netxen_adapter *adapter = sds_ring->adapter;
1948 u32 status = 0;
1949
1950 status = readl(adapter->isr_int_vec);
1951
1952 if (!(status & adapter->int_vec_bit))
1953 return IRQ_NONE;
1954
1955 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1956 /* check interrupt state machine, to be sure */
1957 status = readl(adapter->crb_int_state_reg);
1958 if (!ISR_LEGACY_INT_TRIGGERED(status))
1959 return IRQ_NONE;
1960
1961 } else {
1962 unsigned long our_int = 0;
1963
1964 our_int = readl(adapter->crb_int_state_reg);
1965
1966 /* not our interrupt */
1967 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1968 return IRQ_NONE;
1969
1970 /* claim interrupt */
1971 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
1972
1973 /* clear interrupt */
1974 netxen_nic_disable_int(sds_ring);
1975 }
1976
1977 writel(0xffffffff, adapter->tgt_status_reg);
1978 /* read twice to ensure write is flushed */
1979 readl(adapter->isr_int_vec);
1980 readl(adapter->isr_int_vec);
1981
1982 napi_schedule(&sds_ring->napi);
1983
1984 return IRQ_HANDLED;
1985 }
1986
1987 static irqreturn_t netxen_msi_intr(int irq, void *data)
1988 {
1989 struct nx_host_sds_ring *sds_ring = data;
1990 struct netxen_adapter *adapter = sds_ring->adapter;
1991
1992 /* clear interrupt */
1993 writel(0xffffffff, adapter->tgt_status_reg);
1994
1995 napi_schedule(&sds_ring->napi);
1996 return IRQ_HANDLED;
1997 }
1998
1999 static irqreturn_t netxen_msix_intr(int irq, void *data)
2000 {
2001 struct nx_host_sds_ring *sds_ring = data;
2002
2003 napi_schedule(&sds_ring->napi);
2004 return IRQ_HANDLED;
2005 }
2006
2007 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2008 {
2009 struct nx_host_sds_ring *sds_ring =
2010 container_of(napi, struct nx_host_sds_ring, napi);
2011
2012 struct netxen_adapter *adapter = sds_ring->adapter;
2013
2014 int tx_complete;
2015 int work_done;
2016
2017 tx_complete = netxen_process_cmd_ring(adapter);
2018
2019 work_done = netxen_process_rcv_ring(sds_ring, budget);
2020
2021 if ((work_done < budget) && tx_complete) {
2022 napi_complete(&sds_ring->napi);
2023 if (netif_running(adapter->netdev))
2024 netxen_nic_enable_int(sds_ring);
2025 }
2026
2027 return work_done;
2028 }
2029
2030 #ifdef CONFIG_NET_POLL_CONTROLLER
2031 static void netxen_nic_poll_controller(struct net_device *netdev)
2032 {
2033 struct netxen_adapter *adapter = netdev_priv(netdev);
2034 disable_irq(adapter->irq);
2035 netxen_intr(adapter->irq, adapter);
2036 enable_irq(adapter->irq);
2037 }
2038 #endif
2039
2040 static int
2041 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2042 {
2043 int count;
2044 if (netxen_api_lock(adapter))
2045 return -EIO;
2046
2047 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2048
2049 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2050
2051 netxen_api_unlock(adapter);
2052 return count;
2053 }
2054
2055 static int
2056 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2057 {
2058 int count;
2059 if (netxen_api_lock(adapter))
2060 return -EIO;
2061
2062 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2063 WARN_ON(count == 0);
2064
2065 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2066
2067 if (count == 0)
2068 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2069
2070 netxen_api_unlock(adapter);
2071 return count;
2072 }
2073
2074 static void
2075 nx_dev_request_reset(struct netxen_adapter *adapter)
2076 {
2077 u32 state;
2078
2079 if (netxen_api_lock(adapter))
2080 return;
2081
2082 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2083
2084 if (state != NX_DEV_INITALIZING)
2085 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2086
2087 netxen_api_unlock(adapter);
2088 }
2089
2090 static int
2091 netxen_can_start_firmware(struct netxen_adapter *adapter)
2092 {
2093 int count;
2094 int can_start = 0;
2095
2096 if (netxen_api_lock(adapter))
2097 return 0;
2098
2099 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2100
2101 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2102 count = 0;
2103
2104 if (count == 0) {
2105 can_start = 1;
2106 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2107 }
2108
2109 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2110
2111 netxen_api_unlock(adapter);
2112
2113 return can_start;
2114 }
2115
2116 static void
2117 netxen_schedule_work(struct netxen_adapter *adapter,
2118 work_func_t func, int delay)
2119 {
2120 INIT_DELAYED_WORK(&adapter->fw_work, func);
2121 schedule_delayed_work(&adapter->fw_work, delay);
2122 }
2123
2124 static void
2125 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2126 {
2127 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2128 msleep(10);
2129
2130 cancel_delayed_work_sync(&adapter->fw_work);
2131 }
2132
2133 static void
2134 netxen_attach_work(struct work_struct *work)
2135 {
2136 struct netxen_adapter *adapter = container_of(work,
2137 struct netxen_adapter, fw_work.work);
2138 struct net_device *netdev = adapter->netdev;
2139 int err = 0;
2140
2141 if (netif_running(netdev)) {
2142 err = netxen_nic_attach(adapter);
2143 if (err)
2144 goto done;
2145
2146 err = netxen_nic_up(adapter, netdev);
2147 if (err) {
2148 netxen_nic_detach(adapter);
2149 goto done;
2150 }
2151
2152 netxen_config_indev_addr(netdev, NETDEV_UP);
2153 }
2154
2155 netif_device_attach(netdev);
2156
2157 done:
2158 adapter->fw_fail_cnt = 0;
2159 clear_bit(__NX_RESETTING, &adapter->state);
2160 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2161 }
2162
2163 static void
2164 netxen_fwinit_work(struct work_struct *work)
2165 {
2166 struct netxen_adapter *adapter = container_of(work,
2167 struct netxen_adapter, fw_work.work);
2168 int dev_state;
2169
2170 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2171
2172 switch (dev_state) {
2173 case NX_DEV_COLD:
2174 case NX_DEV_READY:
2175 if (!netxen_start_firmware(adapter)) {
2176 netxen_schedule_work(adapter, netxen_attach_work, 0);
2177 return;
2178 }
2179 break;
2180
2181 case NX_DEV_INITALIZING:
2182 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2183 netxen_schedule_work(adapter,
2184 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2185 return;
2186 }
2187 break;
2188
2189 case NX_DEV_FAILED:
2190 default:
2191 break;
2192 }
2193
2194 nx_incr_dev_ref_cnt(adapter);
2195 clear_bit(__NX_RESETTING, &adapter->state);
2196 }
2197
2198 static void
2199 netxen_detach_work(struct work_struct *work)
2200 {
2201 struct netxen_adapter *adapter = container_of(work,
2202 struct netxen_adapter, fw_work.work);
2203 struct net_device *netdev = adapter->netdev;
2204 int ref_cnt, delay;
2205 u32 status;
2206
2207 netif_device_detach(netdev);
2208
2209 if (netif_running(netdev))
2210 netxen_nic_down(adapter, netdev);
2211
2212 netxen_nic_detach(adapter);
2213
2214 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2215
2216 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2217
2218 if (status & NX_RCODE_FATAL_ERROR)
2219 return;
2220
2221 if (adapter->temp == NX_TEMP_PANIC)
2222 return;
2223
2224 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2225
2226 adapter->fw_wait_cnt = 0;
2227 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2228 }
2229
2230 static int
2231 netxen_check_health(struct netxen_adapter *adapter)
2232 {
2233 u32 state, heartbit;
2234 struct net_device *netdev = adapter->netdev;
2235
2236 if (netxen_nic_check_temp(adapter))
2237 goto detach;
2238
2239 if (adapter->need_fw_reset) {
2240 nx_dev_request_reset(adapter);
2241 goto detach;
2242 }
2243
2244 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2245 if (state == NX_DEV_NEED_RESET)
2246 goto detach;
2247
2248 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2249 return 0;
2250
2251 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2252 if (heartbit != adapter->heartbit) {
2253 adapter->heartbit = heartbit;
2254 adapter->fw_fail_cnt = 0;
2255 return 0;
2256 }
2257
2258 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2259 return 0;
2260
2261 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2262
2263 dev_info(&netdev->dev, "firmware hang detected\n");
2264
2265 detach:
2266 if (!test_and_set_bit(__NX_RESETTING, &adapter->state))
2267 netxen_schedule_work(adapter, netxen_detach_work, 0);
2268 return 1;
2269 }
2270
2271 static void
2272 netxen_fw_poll_work(struct work_struct *work)
2273 {
2274 struct netxen_adapter *adapter = container_of(work,
2275 struct netxen_adapter, fw_work.work);
2276
2277 if (test_bit(__NX_RESETTING, &adapter->state))
2278 goto reschedule;
2279
2280 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2281 if (!adapter->has_link_events) {
2282
2283 netxen_nic_handle_phy_intr(adapter);
2284
2285 if (adapter->link_changed)
2286 netxen_nic_set_link_parameters(adapter);
2287 }
2288 }
2289
2290 if (netxen_check_health(adapter))
2291 return;
2292
2293 reschedule:
2294 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2295 }
2296
2297 static ssize_t
2298 netxen_store_bridged_mode(struct device *dev,
2299 struct device_attribute *attr, const char *buf, size_t len)
2300 {
2301 struct net_device *net = to_net_dev(dev);
2302 struct netxen_adapter *adapter = netdev_priv(net);
2303 unsigned long new;
2304 int ret = -EINVAL;
2305
2306 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2307 goto err_out;
2308
2309 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2310 goto err_out;
2311
2312 if (strict_strtoul(buf, 2, &new))
2313 goto err_out;
2314
2315 if (!netxen_config_bridged_mode(adapter, !!new))
2316 ret = len;
2317
2318 err_out:
2319 return ret;
2320 }
2321
2322 static ssize_t
2323 netxen_show_bridged_mode(struct device *dev,
2324 struct device_attribute *attr, char *buf)
2325 {
2326 struct net_device *net = to_net_dev(dev);
2327 struct netxen_adapter *adapter;
2328 int bridged_mode = 0;
2329
2330 adapter = netdev_priv(net);
2331
2332 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2333 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2334
2335 return sprintf(buf, "%d\n", bridged_mode);
2336 }
2337
2338 static struct device_attribute dev_attr_bridged_mode = {
2339 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2340 .show = netxen_show_bridged_mode,
2341 .store = netxen_store_bridged_mode,
2342 };
2343
2344 static void
2345 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2346 {
2347 struct net_device *netdev = adapter->netdev;
2348 struct device *dev = &netdev->dev;
2349
2350 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2351 /* bridged_mode control */
2352 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2353 dev_warn(&netdev->dev,
2354 "failed to create bridged_mode sysfs entry\n");
2355 }
2356 }
2357 }
2358
2359 static void
2360 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2361 {
2362 struct net_device *netdev = adapter->netdev;
2363 struct device *dev = &netdev->dev;
2364
2365 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2366 device_remove_file(dev, &dev_attr_bridged_mode);
2367 }
2368
2369 #ifdef CONFIG_INET
2370
2371 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2372
2373 static int
2374 netxen_destip_supported(struct netxen_adapter *adapter)
2375 {
2376 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2377 return 0;
2378
2379 if (adapter->ahw.cut_through)
2380 return 0;
2381
2382 return 1;
2383 }
2384
2385 static void
2386 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2387 {
2388 struct in_device *indev;
2389 struct netxen_adapter *adapter = netdev_priv(dev);
2390
2391 if (!netxen_destip_supported(adapter))
2392 return;
2393
2394 indev = in_dev_get(dev);
2395 if (!indev)
2396 return;
2397
2398 for_ifa(indev) {
2399 switch (event) {
2400 case NETDEV_UP:
2401 netxen_config_ipaddr(adapter,
2402 ifa->ifa_address, NX_IP_UP);
2403 break;
2404 case NETDEV_DOWN:
2405 netxen_config_ipaddr(adapter,
2406 ifa->ifa_address, NX_IP_DOWN);
2407 break;
2408 default:
2409 break;
2410 }
2411 } endfor_ifa(indev);
2412
2413 in_dev_put(indev);
2414 return;
2415 }
2416
2417 static int netxen_netdev_event(struct notifier_block *this,
2418 unsigned long event, void *ptr)
2419 {
2420 struct netxen_adapter *adapter;
2421 struct net_device *dev = (struct net_device *)ptr;
2422
2423 recheck:
2424 if (dev == NULL)
2425 goto done;
2426
2427 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2428 dev = vlan_dev_real_dev(dev);
2429 goto recheck;
2430 }
2431
2432 if (!is_netxen_netdev(dev))
2433 goto done;
2434
2435 adapter = netdev_priv(dev);
2436
2437 if (!adapter)
2438 goto done;
2439
2440 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2441 goto done;
2442
2443 netxen_config_indev_addr(dev, event);
2444 done:
2445 return NOTIFY_DONE;
2446 }
2447
2448 static int
2449 netxen_inetaddr_event(struct notifier_block *this,
2450 unsigned long event, void *ptr)
2451 {
2452 struct netxen_adapter *adapter;
2453 struct net_device *dev;
2454
2455 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2456
2457 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2458
2459 recheck:
2460 if (dev == NULL || !netif_running(dev))
2461 goto done;
2462
2463 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2464 dev = vlan_dev_real_dev(dev);
2465 goto recheck;
2466 }
2467
2468 if (!is_netxen_netdev(dev))
2469 goto done;
2470
2471 adapter = netdev_priv(dev);
2472
2473 if (!adapter || !netxen_destip_supported(adapter))
2474 goto done;
2475
2476 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2477 goto done;
2478
2479 switch (event) {
2480 case NETDEV_UP:
2481 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2482 break;
2483 case NETDEV_DOWN:
2484 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2485 break;
2486 default:
2487 break;
2488 }
2489
2490 done:
2491 return NOTIFY_DONE;
2492 }
2493
2494 static struct notifier_block netxen_netdev_cb = {
2495 .notifier_call = netxen_netdev_event,
2496 };
2497
2498 static struct notifier_block netxen_inetaddr_cb = {
2499 .notifier_call = netxen_inetaddr_event,
2500 };
2501 #else
2502 static void
2503 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2504 { }
2505 #endif
2506
2507 static struct pci_driver netxen_driver = {
2508 .name = netxen_nic_driver_name,
2509 .id_table = netxen_pci_tbl,
2510 .probe = netxen_nic_probe,
2511 .remove = __devexit_p(netxen_nic_remove),
2512 #ifdef CONFIG_PM
2513 .suspend = netxen_nic_suspend,
2514 .resume = netxen_nic_resume,
2515 #endif
2516 .shutdown = netxen_nic_shutdown
2517 };
2518
2519 static int __init netxen_init_module(void)
2520 {
2521 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2522
2523 #ifdef CONFIG_INET
2524 register_netdevice_notifier(&netxen_netdev_cb);
2525 register_inetaddr_notifier(&netxen_inetaddr_cb);
2526 #endif
2527
2528 return pci_register_driver(&netxen_driver);
2529 }
2530
2531 module_init(netxen_init_module);
2532
2533 static void __exit netxen_exit_module(void)
2534 {
2535 pci_unregister_driver(&netxen_driver);
2536
2537 #ifdef CONFIG_INET
2538 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2539 unregister_netdevice_notifier(&netxen_netdev_cb);
2540 #endif
2541 }
2542
2543 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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