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58a3643948c33954b828736d4d3f59085236bf74
[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 "COPYING".
23 *
24 */
25
26 #include <linux/slab.h>
27 #include <linux/vmalloc.h>
28 #include <linux/interrupt.h>
29 #include "netxen_nic_hw.h"
30
31 #include "netxen_nic.h"
32
33 #include <linux/dma-mapping.h>
34 #include <linux/if_vlan.h>
35 #include <net/ip.h>
36 #include <linux/ipv6.h>
37 #include <linux/inetdevice.h>
38 #include <linux/sysfs.h>
39 #include <linux/aer.h>
40
41 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
42 MODULE_LICENSE("GPL");
43 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
44 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
45
46 char netxen_nic_driver_name[] = "netxen_nic";
47 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
48 NETXEN_NIC_LINUX_VERSIONID;
49
50 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
51
52 /* Default to restricted 1G auto-neg mode */
53 static int wol_port_mode = 5;
54
55 static int use_msi = 1;
56
57 static int use_msi_x = 1;
58
59 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
60 module_param(auto_fw_reset, int, 0644);
61 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
62
63 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
64 const struct pci_device_id *ent);
65 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
66 static int netxen_nic_open(struct net_device *netdev);
67 static int netxen_nic_close(struct net_device *netdev);
68 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
69 struct net_device *);
70 static void netxen_tx_timeout(struct net_device *netdev);
71 static void netxen_tx_timeout_task(struct work_struct *work);
72 static void netxen_fw_poll_work(struct work_struct *work);
73 static void netxen_schedule_work(struct netxen_adapter *adapter,
74 work_func_t func, int delay);
75 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
76 static int netxen_nic_poll(struct napi_struct *napi, int budget);
77 #ifdef CONFIG_NET_POLL_CONTROLLER
78 static void netxen_nic_poll_controller(struct net_device *netdev);
79 #endif
80
81 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
82 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
83 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
84 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
85
86 static int nx_dev_request_aer(struct netxen_adapter *adapter);
87 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
88 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
89
90 static irqreturn_t netxen_intr(int irq, void *data);
91 static irqreturn_t netxen_msi_intr(int irq, void *data);
92 static irqreturn_t netxen_msix_intr(int irq, void *data);
93
94 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
95 static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);
96 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
97
98 /* PCI Device ID Table */
99 #define ENTRY(device) \
100 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
101 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
102
103 static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
104 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
105 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
106 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
107 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
110 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
111 ENTRY(PCI_DEVICE_ID_NX3031),
112 {0,}
113 };
114
115 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
116
117 static uint32_t crb_cmd_producer[4] = {
118 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
119 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
120 };
121
122 void
123 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
124 struct nx_host_tx_ring *tx_ring)
125 {
126 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
127 }
128
129 static uint32_t crb_cmd_consumer[4] = {
130 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
131 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
132 };
133
134 static inline void
135 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
136 struct nx_host_tx_ring *tx_ring)
137 {
138 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
139 }
140
141 static uint32_t msi_tgt_status[8] = {
142 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
143 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
144 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
145 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
146 };
147
148 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
149
150 static inline void netxen_nic_disable_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, 0);
155 }
156
157 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
158 {
159 struct netxen_adapter *adapter = sds_ring->adapter;
160
161 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
162
163 if (!NETXEN_IS_MSI_FAMILY(adapter))
164 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
165 }
166
167 static int
168 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
169 {
170 int size = sizeof(struct nx_host_sds_ring) * count;
171
172 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
173
174 return recv_ctx->sds_rings == NULL;
175 }
176
177 static void
178 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
179 {
180 if (recv_ctx->sds_rings != NULL)
181 kfree(recv_ctx->sds_rings);
182
183 recv_ctx->sds_rings = NULL;
184 }
185
186 static int
187 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
188 {
189 int ring;
190 struct nx_host_sds_ring *sds_ring;
191 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
192
193 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
194 return -ENOMEM;
195
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netif_napi_add(netdev, &sds_ring->napi,
199 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
200 }
201
202 return 0;
203 }
204
205 static void
206 netxen_napi_del(struct netxen_adapter *adapter)
207 {
208 int ring;
209 struct nx_host_sds_ring *sds_ring;
210 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
211
212 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
213 sds_ring = &recv_ctx->sds_rings[ring];
214 netif_napi_del(&sds_ring->napi);
215 }
216
217 netxen_free_sds_rings(&adapter->recv_ctx);
218 }
219
220 static void
221 netxen_napi_enable(struct netxen_adapter *adapter)
222 {
223 int ring;
224 struct nx_host_sds_ring *sds_ring;
225 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
226
227 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
228 sds_ring = &recv_ctx->sds_rings[ring];
229 napi_enable(&sds_ring->napi);
230 netxen_nic_enable_int(sds_ring);
231 }
232 }
233
234 static void
235 netxen_napi_disable(struct netxen_adapter *adapter)
236 {
237 int ring;
238 struct nx_host_sds_ring *sds_ring;
239 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
240
241 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
242 sds_ring = &recv_ctx->sds_rings[ring];
243 netxen_nic_disable_int(sds_ring);
244 napi_synchronize(&sds_ring->napi);
245 napi_disable(&sds_ring->napi);
246 }
247 }
248
249 static int nx_set_dma_mask(struct netxen_adapter *adapter)
250 {
251 struct pci_dev *pdev = adapter->pdev;
252 uint64_t mask, cmask;
253
254 adapter->pci_using_dac = 0;
255
256 mask = DMA_BIT_MASK(32);
257 cmask = DMA_BIT_MASK(32);
258
259 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
260 #ifndef CONFIG_IA64
261 mask = DMA_BIT_MASK(35);
262 #endif
263 } else {
264 mask = DMA_BIT_MASK(39);
265 cmask = mask;
266 }
267
268 if (pci_set_dma_mask(pdev, mask) == 0 &&
269 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
270 adapter->pci_using_dac = 1;
271 return 0;
272 }
273
274 return -EIO;
275 }
276
277 /* Update addressable range if firmware supports it */
278 static int
279 nx_update_dma_mask(struct netxen_adapter *adapter)
280 {
281 int change, shift, err;
282 uint64_t mask, old_mask, old_cmask;
283 struct pci_dev *pdev = adapter->pdev;
284
285 change = 0;
286
287 shift = NXRD32(adapter, CRB_DMA_SHIFT);
288 if (shift > 32)
289 return 0;
290
291 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
292 change = 1;
293 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
294 change = 1;
295
296 if (change) {
297 old_mask = pdev->dma_mask;
298 old_cmask = pdev->dev.coherent_dma_mask;
299
300 mask = DMA_BIT_MASK(32+shift);
301
302 err = pci_set_dma_mask(pdev, mask);
303 if (err)
304 goto err_out;
305
306 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
307
308 err = pci_set_consistent_dma_mask(pdev, mask);
309 if (err)
310 goto err_out;
311 }
312 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
313 }
314
315 return 0;
316
317 err_out:
318 pci_set_dma_mask(pdev, old_mask);
319 pci_set_consistent_dma_mask(pdev, old_cmask);
320 return err;
321 }
322
323 static int
324 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
325 {
326 u32 val, timeout;
327
328 if (first_boot == 0x55555555) {
329 /* This is the first boot after power up */
330 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
331
332 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
333 return 0;
334
335 /* PCI bus master workaround */
336 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
337 if (!(first_boot & 0x4)) {
338 first_boot |= 0x4;
339 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
340 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
341 }
342
343 /* This is the first boot after power up */
344 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
345 if (first_boot != 0x80000f) {
346 /* clear the register for future unloads/loads */
347 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
348 return -EIO;
349 }
350
351 /* Start P2 boot loader */
352 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
353 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
354 timeout = 0;
355 do {
356 msleep(1);
357 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
358
359 if (++timeout > 5000)
360 return -EIO;
361
362 } while (val == NETXEN_BDINFO_MAGIC);
363 }
364 return 0;
365 }
366
367 static void netxen_set_port_mode(struct netxen_adapter *adapter)
368 {
369 u32 val, data;
370
371 val = adapter->ahw.board_type;
372 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
373 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
374 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
375 data = NETXEN_PORT_MODE_802_3_AP;
376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
377 } else if (port_mode == NETXEN_PORT_MODE_XG) {
378 data = NETXEN_PORT_MODE_XG;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
384 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 } else {
387 data = NETXEN_PORT_MODE_AUTO_NEG;
388 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
389 }
390
391 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
392 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
393 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
394 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
395 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
396 }
397 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
398 }
399 }
400
401 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
402 {
403 u32 control;
404 int pos;
405
406 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
407 if (pos) {
408 pci_read_config_dword(pdev, pos, &control);
409 if (enable)
410 control |= PCI_MSIX_FLAGS_ENABLE;
411 else
412 control = 0;
413 pci_write_config_dword(pdev, pos, control);
414 }
415 }
416
417 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
418 {
419 int i;
420
421 for (i = 0; i < count; i++)
422 adapter->msix_entries[i].entry = i;
423 }
424
425 static int
426 netxen_read_mac_addr(struct netxen_adapter *adapter)
427 {
428 int i;
429 unsigned char *p;
430 u64 mac_addr;
431 struct net_device *netdev = adapter->netdev;
432 struct pci_dev *pdev = adapter->pdev;
433
434 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
435 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
436 return -EIO;
437 } else {
438 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
439 return -EIO;
440 }
441
442 p = (unsigned char *)&mac_addr;
443 for (i = 0; i < 6; i++)
444 netdev->dev_addr[i] = *(p + 5 - i);
445
446 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
447 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
448
449 /* set station address */
450
451 if (!is_valid_ether_addr(netdev->perm_addr))
452 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
453
454 return 0;
455 }
456
457 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
458 {
459 struct netxen_adapter *adapter = netdev_priv(netdev);
460 struct sockaddr *addr = p;
461
462 if (!is_valid_ether_addr(addr->sa_data))
463 return -EINVAL;
464
465 if (netif_running(netdev)) {
466 netif_device_detach(netdev);
467 netxen_napi_disable(adapter);
468 }
469
470 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
471 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
472 adapter->macaddr_set(adapter, addr->sa_data);
473
474 if (netif_running(netdev)) {
475 netif_device_attach(netdev);
476 netxen_napi_enable(adapter);
477 }
478 return 0;
479 }
480
481 static void netxen_set_multicast_list(struct net_device *dev)
482 {
483 struct netxen_adapter *adapter = netdev_priv(dev);
484
485 adapter->set_multi(dev);
486 }
487
488 static const struct net_device_ops netxen_netdev_ops = {
489 .ndo_open = netxen_nic_open,
490 .ndo_stop = netxen_nic_close,
491 .ndo_start_xmit = netxen_nic_xmit_frame,
492 .ndo_get_stats = netxen_nic_get_stats,
493 .ndo_validate_addr = eth_validate_addr,
494 .ndo_set_multicast_list = netxen_set_multicast_list,
495 .ndo_set_mac_address = netxen_nic_set_mac,
496 .ndo_change_mtu = netxen_nic_change_mtu,
497 .ndo_tx_timeout = netxen_tx_timeout,
498 #ifdef CONFIG_NET_POLL_CONTROLLER
499 .ndo_poll_controller = netxen_nic_poll_controller,
500 #endif
501 };
502
503 static void
504 netxen_setup_intr(struct netxen_adapter *adapter)
505 {
506 struct netxen_legacy_intr_set *legacy_intrp;
507 struct pci_dev *pdev = adapter->pdev;
508 int err, num_msix;
509
510 if (adapter->rss_supported) {
511 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
512 MSIX_ENTRIES_PER_ADAPTER : 2;
513 } else
514 num_msix = 1;
515
516 adapter->max_sds_rings = 1;
517
518 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
519
520 if (adapter->ahw.revision_id >= NX_P3_B0)
521 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
522 else
523 legacy_intrp = &legacy_intr[0];
524
525 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
526 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
527 legacy_intrp->tgt_status_reg);
528 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
529 legacy_intrp->tgt_mask_reg);
530 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
531 legacy_intrp->pci_int_reg);
532 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
533
534 if (adapter->ahw.revision_id >= NX_P3_B1)
535 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
536 ISR_INT_STATE_REG);
537 else
538 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
539 CRB_INT_VECTOR);
540
541 netxen_set_msix_bit(pdev, 0);
542
543 if (adapter->msix_supported) {
544
545 netxen_init_msix_entries(adapter, num_msix);
546 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
547 if (err == 0) {
548 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
549 netxen_set_msix_bit(pdev, 1);
550
551 if (adapter->rss_supported)
552 adapter->max_sds_rings = num_msix;
553
554 dev_info(&pdev->dev, "using msi-x interrupts\n");
555 return;
556 }
557
558 if (err > 0)
559 pci_disable_msix(pdev);
560
561 /* fall through for msi */
562 }
563
564 if (use_msi && !pci_enable_msi(pdev)) {
565 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
566 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
567 msi_tgt_status[adapter->ahw.pci_func]);
568 dev_info(&pdev->dev, "using msi interrupts\n");
569 adapter->msix_entries[0].vector = pdev->irq;
570 return;
571 }
572
573 dev_info(&pdev->dev, "using legacy interrupts\n");
574 adapter->msix_entries[0].vector = pdev->irq;
575 }
576
577 static void
578 netxen_teardown_intr(struct netxen_adapter *adapter)
579 {
580 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
581 pci_disable_msix(adapter->pdev);
582 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
583 pci_disable_msi(adapter->pdev);
584 }
585
586 static void
587 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
588 {
589 if (adapter->ahw.db_base != NULL)
590 iounmap(adapter->ahw.db_base);
591 if (adapter->ahw.pci_base0 != NULL)
592 iounmap(adapter->ahw.pci_base0);
593 if (adapter->ahw.pci_base1 != NULL)
594 iounmap(adapter->ahw.pci_base1);
595 if (adapter->ahw.pci_base2 != NULL)
596 iounmap(adapter->ahw.pci_base2);
597 }
598
599 static int
600 netxen_setup_pci_map(struct netxen_adapter *adapter)
601 {
602 void __iomem *db_ptr = NULL;
603
604 resource_size_t mem_base, db_base;
605 unsigned long mem_len, db_len = 0;
606
607 struct pci_dev *pdev = adapter->pdev;
608 int pci_func = adapter->ahw.pci_func;
609 struct netxen_hardware_context *ahw = &adapter->ahw;
610
611 int err = 0;
612
613 /*
614 * Set the CRB window to invalid. If any register in window 0 is
615 * accessed it should set the window to 0 and then reset it to 1.
616 */
617 adapter->ahw.crb_win = -1;
618 adapter->ahw.ocm_win = -1;
619
620 /* remap phys address */
621 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
622 mem_len = pci_resource_len(pdev, 0);
623
624 /* 128 Meg of memory */
625 if (mem_len == NETXEN_PCI_128MB_SIZE) {
626
627 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
628 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
629 SECOND_PAGE_GROUP_SIZE);
630 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
631 THIRD_PAGE_GROUP_SIZE);
632 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
633 ahw->pci_base2 == NULL) {
634 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
635 err = -EIO;
636 goto err_out;
637 }
638
639 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
640
641 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
642
643 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
644 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
645 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
646 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
647 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
648 err = -EIO;
649 goto err_out;
650 }
651
652 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
653
654 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
655 if (ahw->pci_base0 == NULL) {
656 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
657 return -EIO;
658 }
659 ahw->pci_len0 = mem_len;
660 } else {
661 return -EIO;
662 }
663
664 netxen_setup_hwops(adapter);
665
666 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
667
668 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
669 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
670 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
671
672 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
673 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
674 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
675 }
676
677 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
678 goto skip_doorbell;
679
680 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
681 db_len = pci_resource_len(pdev, 4);
682
683 if (db_len == 0) {
684 printk(KERN_ERR "%s: doorbell is disabled\n",
685 netxen_nic_driver_name);
686 err = -EIO;
687 goto err_out;
688 }
689
690 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
691 if (!db_ptr) {
692 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
693 netxen_nic_driver_name);
694 err = -EIO;
695 goto err_out;
696 }
697
698 skip_doorbell:
699 adapter->ahw.db_base = db_ptr;
700 adapter->ahw.db_len = db_len;
701 return 0;
702
703 err_out:
704 netxen_cleanup_pci_map(adapter);
705 return err;
706 }
707
708 static void
709 netxen_check_options(struct netxen_adapter *adapter)
710 {
711 u32 fw_major, fw_minor, fw_build;
712 char brd_name[NETXEN_MAX_SHORT_NAME];
713 char serial_num[32];
714 int i, offset, val;
715 int *ptr32;
716 struct pci_dev *pdev = adapter->pdev;
717
718 adapter->driver_mismatch = 0;
719
720 ptr32 = (int *)&serial_num;
721 offset = NX_FW_SERIAL_NUM_OFFSET;
722 for (i = 0; i < 8; i++) {
723 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
724 dev_err(&pdev->dev, "error reading board info\n");
725 adapter->driver_mismatch = 1;
726 return;
727 }
728 ptr32[i] = cpu_to_le32(val);
729 offset += sizeof(u32);
730 }
731
732 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
733 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
734 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
735
736 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
737
738 if (adapter->portnum == 0) {
739 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
740
741 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
742 module_name(THIS_MODULE),
743 brd_name, serial_num, adapter->ahw.revision_id);
744 }
745
746 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
747 adapter->driver_mismatch = 1;
748 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
749 fw_major, fw_minor, fw_build);
750 return;
751 }
752
753 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
754 i = NXRD32(adapter, NETXEN_SRE_MISC);
755 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
756 }
757
758 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
759 fw_major, fw_minor, fw_build,
760 adapter->ahw.cut_through ? "cut-through" : "legacy");
761
762 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
763 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
764
765 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
766
767 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
768 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
769 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
770 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
771 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
772 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
773 }
774
775 adapter->msix_supported = 0;
776 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
777 adapter->msix_supported = !!use_msi_x;
778 adapter->rss_supported = !!use_msi_x;
779 } else {
780 u32 flashed_ver = 0;
781 netxen_rom_fast_read(adapter,
782 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
783 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
784
785 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
786 switch (adapter->ahw.board_type) {
787 case NETXEN_BRDTYPE_P2_SB31_10G:
788 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
789 adapter->msix_supported = !!use_msi_x;
790 adapter->rss_supported = !!use_msi_x;
791 break;
792 default:
793 break;
794 }
795 }
796 }
797
798 adapter->num_txd = MAX_CMD_DESCRIPTORS;
799
800 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
801 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
802 adapter->max_rds_rings = 3;
803 } else {
804 adapter->num_lro_rxd = 0;
805 adapter->max_rds_rings = 2;
806 }
807 }
808
809 static int
810 netxen_start_firmware(struct netxen_adapter *adapter)
811 {
812 int val, err, first_boot;
813 struct pci_dev *pdev = adapter->pdev;
814
815 /* required for NX2031 dummy dma */
816 err = nx_set_dma_mask(adapter);
817 if (err)
818 return err;
819
820 if (!netxen_can_start_firmware(adapter))
821 goto wait_init;
822
823 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
824
825 err = netxen_check_hw_init(adapter, first_boot);
826 if (err) {
827 dev_err(&pdev->dev, "error in init HW init sequence\n");
828 return err;
829 }
830
831 netxen_request_firmware(adapter);
832
833 err = netxen_need_fw_reset(adapter);
834 if (err < 0)
835 goto err_out;
836 if (err == 0)
837 goto wait_init;
838
839 if (first_boot != 0x55555555) {
840 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
841 netxen_pinit_from_rom(adapter);
842 msleep(1);
843 }
844
845 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
846 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
847 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
848
849 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
850 netxen_set_port_mode(adapter);
851
852 err = netxen_load_firmware(adapter);
853 if (err)
854 goto err_out;
855
856 netxen_release_firmware(adapter);
857
858 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
859
860 /* Initialize multicast addr pool owners */
861 val = 0x7654;
862 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
863 val |= 0x0f000000;
864 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
865
866 }
867
868 err = netxen_init_dummy_dma(adapter);
869 if (err)
870 goto err_out;
871
872 /*
873 * Tell the hardware our version number.
874 */
875 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
876 | ((_NETXEN_NIC_LINUX_MINOR << 8))
877 | (_NETXEN_NIC_LINUX_SUBVERSION);
878 NXWR32(adapter, CRB_DRIVER_VERSION, val);
879
880 wait_init:
881 /* Handshake with the card before we register the devices. */
882 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
883 if (err) {
884 netxen_free_dummy_dma(adapter);
885 goto err_out;
886 }
887
888 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
889
890 nx_update_dma_mask(adapter);
891
892 netxen_check_options(adapter);
893
894 adapter->need_fw_reset = 0;
895
896 /* fall through and release firmware */
897
898 err_out:
899 netxen_release_firmware(adapter);
900 return err;
901 }
902
903 static int
904 netxen_nic_request_irq(struct netxen_adapter *adapter)
905 {
906 irq_handler_t handler;
907 struct nx_host_sds_ring *sds_ring;
908 int err, ring;
909
910 unsigned long flags = IRQF_SAMPLE_RANDOM;
911 struct net_device *netdev = adapter->netdev;
912 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
913
914 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
915 handler = netxen_msix_intr;
916 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
917 handler = netxen_msi_intr;
918 else {
919 flags |= IRQF_SHARED;
920 handler = netxen_intr;
921 }
922 adapter->irq = netdev->irq;
923
924 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
925 sds_ring = &recv_ctx->sds_rings[ring];
926 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
927 err = request_irq(sds_ring->irq, handler,
928 flags, sds_ring->name, sds_ring);
929 if (err)
930 return err;
931 }
932
933 return 0;
934 }
935
936 static void
937 netxen_nic_free_irq(struct netxen_adapter *adapter)
938 {
939 int ring;
940 struct nx_host_sds_ring *sds_ring;
941
942 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
943
944 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
945 sds_ring = &recv_ctx->sds_rings[ring];
946 free_irq(sds_ring->irq, sds_ring);
947 }
948 }
949
950 static void
951 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
952 {
953 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
954 adapter->coal.normal.data.rx_time_us =
955 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
956 adapter->coal.normal.data.rx_packets =
957 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
958 adapter->coal.normal.data.tx_time_us =
959 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
960 adapter->coal.normal.data.tx_packets =
961 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
962 }
963
964 /* with rtnl_lock */
965 static int
966 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
967 {
968 int err;
969
970 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
971 return -EIO;
972
973 err = adapter->init_port(adapter, adapter->physical_port);
974 if (err) {
975 printk(KERN_ERR "%s: Failed to initialize port %d\n",
976 netxen_nic_driver_name, adapter->portnum);
977 return err;
978 }
979 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
980 adapter->macaddr_set(adapter, adapter->mac_addr);
981
982 adapter->set_multi(netdev);
983 adapter->set_mtu(adapter, netdev->mtu);
984
985 adapter->ahw.linkup = 0;
986
987 if (adapter->max_sds_rings > 1)
988 netxen_config_rss(adapter, 1);
989
990 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
991 netxen_config_intr_coalesce(adapter);
992
993 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
994 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
995
996 netxen_napi_enable(adapter);
997
998 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
999 netxen_linkevent_request(adapter, 1);
1000 else
1001 netxen_nic_set_link_parameters(adapter);
1002
1003 set_bit(__NX_DEV_UP, &adapter->state);
1004 return 0;
1005 }
1006
1007 /* Usage: During resume and firmware recovery module.*/
1008
1009 static inline int
1010 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1011 {
1012 int err = 0;
1013
1014 rtnl_lock();
1015 if (netif_running(netdev))
1016 err = __netxen_nic_up(adapter, netdev);
1017 rtnl_unlock();
1018
1019 return err;
1020 }
1021
1022 /* with rtnl_lock */
1023 static void
1024 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1025 {
1026 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1027 return;
1028
1029 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1030 return;
1031
1032 smp_mb();
1033 spin_lock(&adapter->tx_clean_lock);
1034 netif_carrier_off(netdev);
1035 netif_tx_disable(netdev);
1036
1037 if (adapter->stop_port)
1038 adapter->stop_port(adapter);
1039
1040 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1041 netxen_p3_free_mac_list(adapter);
1042
1043 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1044
1045 netxen_napi_disable(adapter);
1046
1047 netxen_release_tx_buffers(adapter);
1048 spin_unlock(&adapter->tx_clean_lock);
1049 }
1050
1051 /* Usage: During suspend and firmware recovery module */
1052
1053 static inline void
1054 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1055 {
1056 rtnl_lock();
1057 if (netif_running(netdev))
1058 __netxen_nic_down(adapter, netdev);
1059 rtnl_unlock();
1060
1061 }
1062
1063 static int
1064 netxen_nic_attach(struct netxen_adapter *adapter)
1065 {
1066 struct net_device *netdev = adapter->netdev;
1067 struct pci_dev *pdev = adapter->pdev;
1068 int err, ring;
1069 struct nx_host_rds_ring *rds_ring;
1070 struct nx_host_tx_ring *tx_ring;
1071
1072 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1073 return 0;
1074
1075 err = netxen_init_firmware(adapter);
1076 if (err)
1077 return err;
1078
1079 err = netxen_napi_add(adapter, netdev);
1080 if (err)
1081 return err;
1082
1083 err = netxen_alloc_sw_resources(adapter);
1084 if (err) {
1085 printk(KERN_ERR "%s: Error in setting sw resources\n",
1086 netdev->name);
1087 return err;
1088 }
1089
1090 err = netxen_alloc_hw_resources(adapter);
1091 if (err) {
1092 printk(KERN_ERR "%s: Error in setting hw resources\n",
1093 netdev->name);
1094 goto err_out_free_sw;
1095 }
1096
1097 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1098 tx_ring = adapter->tx_ring;
1099 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1100 crb_cmd_producer[adapter->portnum]);
1101 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1102 crb_cmd_consumer[adapter->portnum]);
1103
1104 tx_ring->producer = 0;
1105 tx_ring->sw_consumer = 0;
1106
1107 netxen_nic_update_cmd_producer(adapter, tx_ring);
1108 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1109 }
1110
1111 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1112 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1113 netxen_post_rx_buffers(adapter, ring, rds_ring);
1114 }
1115
1116 err = netxen_nic_request_irq(adapter);
1117 if (err) {
1118 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1119 netdev->name);
1120 goto err_out_free_rxbuf;
1121 }
1122
1123 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1124 netxen_nic_init_coalesce_defaults(adapter);
1125
1126 netxen_create_sysfs_entries(adapter);
1127
1128 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1129 return 0;
1130
1131 err_out_free_rxbuf:
1132 netxen_release_rx_buffers(adapter);
1133 netxen_free_hw_resources(adapter);
1134 err_out_free_sw:
1135 netxen_free_sw_resources(adapter);
1136 return err;
1137 }
1138
1139 static void
1140 netxen_nic_detach(struct netxen_adapter *adapter)
1141 {
1142 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1143 return;
1144
1145 netxen_remove_sysfs_entries(adapter);
1146
1147 netxen_free_hw_resources(adapter);
1148 netxen_release_rx_buffers(adapter);
1149 netxen_nic_free_irq(adapter);
1150 netxen_napi_del(adapter);
1151 netxen_free_sw_resources(adapter);
1152
1153 adapter->is_up = 0;
1154 }
1155
1156 int
1157 netxen_nic_reset_context(struct netxen_adapter *adapter)
1158 {
1159 int err = 0;
1160 struct net_device *netdev = adapter->netdev;
1161
1162 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1163 return -EBUSY;
1164
1165 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1166
1167 netif_device_detach(netdev);
1168
1169 if (netif_running(netdev))
1170 __netxen_nic_down(adapter, netdev);
1171
1172 netxen_nic_detach(adapter);
1173
1174 if (netif_running(netdev)) {
1175 err = netxen_nic_attach(adapter);
1176 if (!err)
1177 err = __netxen_nic_up(adapter, netdev);
1178
1179 if (err)
1180 goto done;
1181 }
1182
1183 netif_device_attach(netdev);
1184 }
1185
1186 done:
1187 clear_bit(__NX_RESETTING, &adapter->state);
1188 return err;
1189 }
1190
1191 static int
1192 netxen_setup_netdev(struct netxen_adapter *adapter,
1193 struct net_device *netdev)
1194 {
1195 int err = 0;
1196 struct pci_dev *pdev = adapter->pdev;
1197
1198 adapter->rx_csum = 1;
1199 adapter->mc_enabled = 0;
1200 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1201 adapter->max_mc_count = 38;
1202 else
1203 adapter->max_mc_count = 16;
1204
1205 netdev->netdev_ops = &netxen_netdev_ops;
1206 netdev->watchdog_timeo = 5*HZ;
1207
1208 netxen_nic_change_mtu(netdev, netdev->mtu);
1209
1210 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1211
1212 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1213 netdev->features |= (NETIF_F_GRO);
1214 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1215
1216 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1217 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1218 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1219 }
1220
1221 if (adapter->pci_using_dac) {
1222 netdev->features |= NETIF_F_HIGHDMA;
1223 netdev->vlan_features |= NETIF_F_HIGHDMA;
1224 }
1225
1226 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1227 netdev->features |= (NETIF_F_HW_VLAN_TX);
1228
1229 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1230 netdev->features |= NETIF_F_LRO;
1231
1232 netdev->irq = adapter->msix_entries[0].vector;
1233
1234 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1235
1236 if (netxen_read_mac_addr(adapter))
1237 dev_warn(&pdev->dev, "failed to read mac addr\n");
1238
1239 netif_carrier_off(netdev);
1240
1241 err = register_netdev(netdev);
1242 if (err) {
1243 dev_err(&pdev->dev, "failed to register net device\n");
1244 return err;
1245 }
1246
1247 return 0;
1248 }
1249
1250 #ifdef CONFIG_PCIEAER
1251 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1252 {
1253 struct pci_dev *pdev = adapter->pdev;
1254 struct pci_dev *root = pdev->bus->self;
1255 u32 aer_pos;
1256
1257 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1258 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1259 return;
1260
1261 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1262 return;
1263
1264 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1265 if (!aer_pos)
1266 return;
1267
1268 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1269 }
1270 #endif
1271
1272 static int __devinit
1273 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1274 {
1275 struct net_device *netdev = NULL;
1276 struct netxen_adapter *adapter = NULL;
1277 int i = 0, err;
1278 int pci_func_id = PCI_FUNC(pdev->devfn);
1279 uint8_t revision_id;
1280 u32 val;
1281
1282 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1283 pr_warning("%s: chip revisions between 0x%x-0x%x "
1284 "will not be enabled.\n",
1285 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1286 return -ENODEV;
1287 }
1288
1289 if ((err = pci_enable_device(pdev)))
1290 return err;
1291
1292 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1293 err = -ENODEV;
1294 goto err_out_disable_pdev;
1295 }
1296
1297 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1298 goto err_out_disable_pdev;
1299
1300 if (NX_IS_REVISION_P3(pdev->revision))
1301 pci_enable_pcie_error_reporting(pdev);
1302
1303 pci_set_master(pdev);
1304
1305 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1306 if(!netdev) {
1307 dev_err(&pdev->dev, "failed to allocate net_device\n");
1308 err = -ENOMEM;
1309 goto err_out_free_res;
1310 }
1311
1312 SET_NETDEV_DEV(netdev, &pdev->dev);
1313
1314 adapter = netdev_priv(netdev);
1315 adapter->netdev = netdev;
1316 adapter->pdev = pdev;
1317 adapter->ahw.pci_func = pci_func_id;
1318
1319 revision_id = pdev->revision;
1320 adapter->ahw.revision_id = revision_id;
1321
1322 rwlock_init(&adapter->ahw.crb_lock);
1323 spin_lock_init(&adapter->ahw.mem_lock);
1324
1325 spin_lock_init(&adapter->tx_clean_lock);
1326 INIT_LIST_HEAD(&adapter->mac_list);
1327
1328 err = netxen_setup_pci_map(adapter);
1329 if (err)
1330 goto err_out_free_netdev;
1331
1332 /* This will be reset for mezz cards */
1333 adapter->portnum = pci_func_id;
1334
1335 err = netxen_nic_get_board_info(adapter);
1336 if (err) {
1337 dev_err(&pdev->dev, "Error getting board config info.\n");
1338 goto err_out_iounmap;
1339 }
1340
1341 #ifdef CONFIG_PCIEAER
1342 netxen_mask_aer_correctable(adapter);
1343 #endif
1344
1345 /* Mezz cards have PCI function 0,2,3 enabled */
1346 switch (adapter->ahw.board_type) {
1347 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1348 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1349 if (pci_func_id >= 2)
1350 adapter->portnum = pci_func_id - 2;
1351 break;
1352 default:
1353 break;
1354 }
1355
1356 if (adapter->portnum == 0) {
1357 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1358 if (val != 0xffffffff && val != 0) {
1359 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1360 adapter->need_fw_reset = 1;
1361 }
1362 }
1363
1364 err = netxen_start_firmware(adapter);
1365 if (err)
1366 goto err_out_decr_ref;
1367
1368 /*
1369 * See if the firmware gave us a virtual-physical port mapping.
1370 */
1371 adapter->physical_port = adapter->portnum;
1372 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1373 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1374 if (i != 0x55555555)
1375 adapter->physical_port = i;
1376 }
1377
1378 netxen_nic_clear_stats(adapter);
1379
1380 netxen_setup_intr(adapter);
1381
1382 err = netxen_setup_netdev(adapter, netdev);
1383 if (err)
1384 goto err_out_disable_msi;
1385
1386 pci_set_drvdata(pdev, adapter);
1387
1388 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1389
1390 switch (adapter->ahw.port_type) {
1391 case NETXEN_NIC_GBE:
1392 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1393 adapter->netdev->name);
1394 break;
1395 case NETXEN_NIC_XGBE:
1396 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1397 adapter->netdev->name);
1398 break;
1399 }
1400
1401 netxen_create_diag_entries(adapter);
1402
1403 return 0;
1404
1405 err_out_disable_msi:
1406 netxen_teardown_intr(adapter);
1407
1408 netxen_free_dummy_dma(adapter);
1409
1410 err_out_decr_ref:
1411 nx_decr_dev_ref_cnt(adapter);
1412
1413 err_out_iounmap:
1414 netxen_cleanup_pci_map(adapter);
1415
1416 err_out_free_netdev:
1417 free_netdev(netdev);
1418
1419 err_out_free_res:
1420 pci_release_regions(pdev);
1421
1422 err_out_disable_pdev:
1423 pci_set_drvdata(pdev, NULL);
1424 pci_disable_device(pdev);
1425 return err;
1426 }
1427
1428 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1429 {
1430 struct netxen_adapter *adapter;
1431 struct net_device *netdev;
1432
1433 adapter = pci_get_drvdata(pdev);
1434 if (adapter == NULL)
1435 return;
1436
1437 netdev = adapter->netdev;
1438
1439 netxen_cancel_fw_work(adapter);
1440
1441 unregister_netdev(netdev);
1442
1443 cancel_work_sync(&adapter->tx_timeout_task);
1444
1445 netxen_nic_detach(adapter);
1446
1447 nx_decr_dev_ref_cnt(adapter);
1448
1449 if (adapter->portnum == 0)
1450 netxen_free_dummy_dma(adapter);
1451
1452 clear_bit(__NX_RESETTING, &adapter->state);
1453
1454 netxen_teardown_intr(adapter);
1455
1456 netxen_remove_diag_entries(adapter);
1457
1458 netxen_cleanup_pci_map(adapter);
1459
1460 netxen_release_firmware(adapter);
1461
1462 if (NX_IS_REVISION_P3(pdev->revision))
1463 pci_disable_pcie_error_reporting(pdev);
1464
1465 pci_release_regions(pdev);
1466 pci_disable_device(pdev);
1467 pci_set_drvdata(pdev, NULL);
1468
1469 free_netdev(netdev);
1470 }
1471
1472 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1473 {
1474 struct net_device *netdev = adapter->netdev;
1475
1476 netif_device_detach(netdev);
1477
1478 netxen_cancel_fw_work(adapter);
1479
1480 if (netif_running(netdev))
1481 netxen_nic_down(adapter, netdev);
1482
1483 cancel_work_sync(&adapter->tx_timeout_task);
1484
1485 netxen_nic_detach(adapter);
1486
1487 if (adapter->portnum == 0)
1488 netxen_free_dummy_dma(adapter);
1489
1490 nx_decr_dev_ref_cnt(adapter);
1491
1492 clear_bit(__NX_RESETTING, &adapter->state);
1493 }
1494
1495 static int netxen_nic_attach_func(struct pci_dev *pdev)
1496 {
1497 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1498 struct net_device *netdev = adapter->netdev;
1499 int err;
1500
1501 err = pci_enable_device(pdev);
1502 if (err)
1503 return err;
1504
1505 pci_set_power_state(pdev, PCI_D0);
1506 pci_set_master(pdev);
1507 pci_restore_state(pdev);
1508
1509 adapter->ahw.crb_win = -1;
1510 adapter->ahw.ocm_win = -1;
1511
1512 err = netxen_start_firmware(adapter);
1513 if (err) {
1514 dev_err(&pdev->dev, "failed to start firmware\n");
1515 return err;
1516 }
1517
1518 if (netif_running(netdev)) {
1519 err = netxen_nic_attach(adapter);
1520 if (err)
1521 goto err_out;
1522
1523 err = netxen_nic_up(adapter, netdev);
1524 if (err)
1525 goto err_out_detach;
1526
1527 netxen_config_indev_addr(netdev, NETDEV_UP);
1528 }
1529
1530 netif_device_attach(netdev);
1531 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1532 return 0;
1533
1534 err_out_detach:
1535 netxen_nic_detach(adapter);
1536 err_out:
1537 nx_decr_dev_ref_cnt(adapter);
1538 return err;
1539 }
1540
1541 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1542 pci_channel_state_t state)
1543 {
1544 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1545
1546 if (state == pci_channel_io_perm_failure)
1547 return PCI_ERS_RESULT_DISCONNECT;
1548
1549 if (nx_dev_request_aer(adapter))
1550 return PCI_ERS_RESULT_RECOVERED;
1551
1552 netxen_nic_detach_func(adapter);
1553
1554 pci_disable_device(pdev);
1555
1556 return PCI_ERS_RESULT_NEED_RESET;
1557 }
1558
1559 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1560 {
1561 int err = 0;
1562
1563 err = netxen_nic_attach_func(pdev);
1564
1565 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1566 }
1567
1568 static void netxen_io_resume(struct pci_dev *pdev)
1569 {
1570 pci_cleanup_aer_uncorrect_error_status(pdev);
1571 }
1572
1573 static void netxen_nic_shutdown(struct pci_dev *pdev)
1574 {
1575 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1576
1577 netxen_nic_detach_func(adapter);
1578
1579 if (pci_save_state(pdev))
1580 return;
1581
1582 if (netxen_nic_wol_supported(adapter)) {
1583 pci_enable_wake(pdev, PCI_D3cold, 1);
1584 pci_enable_wake(pdev, PCI_D3hot, 1);
1585 }
1586
1587 pci_disable_device(pdev);
1588 }
1589
1590 #ifdef CONFIG_PM
1591 static int
1592 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1593 {
1594 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1595 int retval;
1596
1597 netxen_nic_detach_func(adapter);
1598
1599 retval = pci_save_state(pdev);
1600 if (retval)
1601 return retval;
1602
1603 if (netxen_nic_wol_supported(adapter)) {
1604 pci_enable_wake(pdev, PCI_D3cold, 1);
1605 pci_enable_wake(pdev, PCI_D3hot, 1);
1606 }
1607
1608 pci_disable_device(pdev);
1609 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1610
1611 return 0;
1612 }
1613
1614 static int
1615 netxen_nic_resume(struct pci_dev *pdev)
1616 {
1617 return netxen_nic_attach_func(pdev);
1618 }
1619 #endif
1620
1621 static int netxen_nic_open(struct net_device *netdev)
1622 {
1623 struct netxen_adapter *adapter = netdev_priv(netdev);
1624 int err = 0;
1625
1626 if (adapter->driver_mismatch)
1627 return -EIO;
1628
1629 err = netxen_nic_attach(adapter);
1630 if (err)
1631 return err;
1632
1633 err = __netxen_nic_up(adapter, netdev);
1634 if (err)
1635 goto err_out;
1636
1637 netif_start_queue(netdev);
1638
1639 return 0;
1640
1641 err_out:
1642 netxen_nic_detach(adapter);
1643 return err;
1644 }
1645
1646 /*
1647 * netxen_nic_close - Disables a network interface entry point
1648 */
1649 static int netxen_nic_close(struct net_device *netdev)
1650 {
1651 struct netxen_adapter *adapter = netdev_priv(netdev);
1652
1653 __netxen_nic_down(adapter, netdev);
1654 return 0;
1655 }
1656
1657 static void
1658 netxen_tso_check(struct net_device *netdev,
1659 struct nx_host_tx_ring *tx_ring,
1660 struct cmd_desc_type0 *first_desc,
1661 struct sk_buff *skb)
1662 {
1663 u8 opcode = TX_ETHER_PKT;
1664 __be16 protocol = skb->protocol;
1665 u16 flags = 0, vid = 0;
1666 u32 producer;
1667 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1668 struct cmd_desc_type0 *hwdesc;
1669 struct vlan_ethhdr *vh;
1670
1671 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1672
1673 vh = (struct vlan_ethhdr *)skb->data;
1674 protocol = vh->h_vlan_encapsulated_proto;
1675 flags = FLAGS_VLAN_TAGGED;
1676
1677 } else if (vlan_tx_tag_present(skb)) {
1678
1679 flags = FLAGS_VLAN_OOB;
1680 vid = vlan_tx_tag_get(skb);
1681 netxen_set_tx_vlan_tci(first_desc, vid);
1682 vlan_oob = 1;
1683 }
1684
1685 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1686 skb_shinfo(skb)->gso_size > 0) {
1687
1688 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1689
1690 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1691 first_desc->total_hdr_length = hdr_len;
1692 if (vlan_oob) {
1693 first_desc->total_hdr_length += VLAN_HLEN;
1694 first_desc->tcp_hdr_offset = VLAN_HLEN;
1695 first_desc->ip_hdr_offset = VLAN_HLEN;
1696 /* Only in case of TSO on vlan device */
1697 flags |= FLAGS_VLAN_TAGGED;
1698 }
1699
1700 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1701 TX_TCP_LSO6 : TX_TCP_LSO;
1702 tso = 1;
1703
1704 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1705 u8 l4proto;
1706
1707 if (protocol == cpu_to_be16(ETH_P_IP)) {
1708 l4proto = ip_hdr(skb)->protocol;
1709
1710 if (l4proto == IPPROTO_TCP)
1711 opcode = TX_TCP_PKT;
1712 else if(l4proto == IPPROTO_UDP)
1713 opcode = TX_UDP_PKT;
1714 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1715 l4proto = ipv6_hdr(skb)->nexthdr;
1716
1717 if (l4proto == IPPROTO_TCP)
1718 opcode = TX_TCPV6_PKT;
1719 else if(l4proto == IPPROTO_UDP)
1720 opcode = TX_UDPV6_PKT;
1721 }
1722 }
1723
1724 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1725 first_desc->ip_hdr_offset += skb_network_offset(skb);
1726 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1727
1728 if (!tso)
1729 return;
1730
1731 /* For LSO, we need to copy the MAC/IP/TCP headers into
1732 * the descriptor ring
1733 */
1734 producer = tx_ring->producer;
1735 copied = 0;
1736 offset = 2;
1737
1738 if (vlan_oob) {
1739 /* Create a TSO vlan header template for firmware */
1740
1741 hwdesc = &tx_ring->desc_head[producer];
1742 tx_ring->cmd_buf_arr[producer].skb = NULL;
1743
1744 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1745 hdr_len + VLAN_HLEN);
1746
1747 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1748 skb_copy_from_linear_data(skb, vh, 12);
1749 vh->h_vlan_proto = htons(ETH_P_8021Q);
1750 vh->h_vlan_TCI = htons(vid);
1751 skb_copy_from_linear_data_offset(skb, 12,
1752 (char *)vh + 16, copy_len - 16);
1753
1754 copied = copy_len - VLAN_HLEN;
1755 offset = 0;
1756
1757 producer = get_next_index(producer, tx_ring->num_desc);
1758 }
1759
1760 while (copied < hdr_len) {
1761
1762 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1763 (hdr_len - copied));
1764
1765 hwdesc = &tx_ring->desc_head[producer];
1766 tx_ring->cmd_buf_arr[producer].skb = NULL;
1767
1768 skb_copy_from_linear_data_offset(skb, copied,
1769 (char *)hwdesc + offset, copy_len);
1770
1771 copied += copy_len;
1772 offset = 0;
1773
1774 producer = get_next_index(producer, tx_ring->num_desc);
1775 }
1776
1777 tx_ring->producer = producer;
1778 barrier();
1779 }
1780
1781 static int
1782 netxen_map_tx_skb(struct pci_dev *pdev,
1783 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1784 {
1785 struct netxen_skb_frag *nf;
1786 struct skb_frag_struct *frag;
1787 int i, nr_frags;
1788 dma_addr_t map;
1789
1790 nr_frags = skb_shinfo(skb)->nr_frags;
1791 nf = &pbuf->frag_array[0];
1792
1793 map = pci_map_single(pdev, skb->data,
1794 skb_headlen(skb), PCI_DMA_TODEVICE);
1795 if (pci_dma_mapping_error(pdev, map))
1796 goto out_err;
1797
1798 nf->dma = map;
1799 nf->length = skb_headlen(skb);
1800
1801 for (i = 0; i < nr_frags; i++) {
1802 frag = &skb_shinfo(skb)->frags[i];
1803 nf = &pbuf->frag_array[i+1];
1804
1805 map = pci_map_page(pdev, frag->page, frag->page_offset,
1806 frag->size, PCI_DMA_TODEVICE);
1807 if (pci_dma_mapping_error(pdev, map))
1808 goto unwind;
1809
1810 nf->dma = map;
1811 nf->length = frag->size;
1812 }
1813
1814 return 0;
1815
1816 unwind:
1817 while (--i >= 0) {
1818 nf = &pbuf->frag_array[i+1];
1819 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1820 }
1821
1822 nf = &pbuf->frag_array[0];
1823 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1824
1825 out_err:
1826 return -ENOMEM;
1827 }
1828
1829 static inline void
1830 netxen_clear_cmddesc(u64 *desc)
1831 {
1832 desc[0] = 0ULL;
1833 desc[2] = 0ULL;
1834 }
1835
1836 static netdev_tx_t
1837 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1838 {
1839 struct netxen_adapter *adapter = netdev_priv(netdev);
1840 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1841 struct netxen_cmd_buffer *pbuf;
1842 struct netxen_skb_frag *buffrag;
1843 struct cmd_desc_type0 *hwdesc, *first_desc;
1844 struct pci_dev *pdev;
1845 int i, k;
1846
1847 u32 producer;
1848 int frag_count, no_of_desc;
1849 u32 num_txd = tx_ring->num_desc;
1850
1851 frag_count = skb_shinfo(skb)->nr_frags + 1;
1852
1853 /* 4 fragments per cmd des */
1854 no_of_desc = (frag_count + 3) >> 2;
1855
1856 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1857 netif_stop_queue(netdev);
1858 smp_mb();
1859 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1860 netif_start_queue(netdev);
1861 else
1862 return NETDEV_TX_BUSY;
1863 }
1864
1865 producer = tx_ring->producer;
1866 pbuf = &tx_ring->cmd_buf_arr[producer];
1867
1868 pdev = adapter->pdev;
1869
1870 if (netxen_map_tx_skb(pdev, skb, pbuf))
1871 goto drop_packet;
1872
1873 pbuf->skb = skb;
1874 pbuf->frag_count = frag_count;
1875
1876 first_desc = hwdesc = &tx_ring->desc_head[producer];
1877 netxen_clear_cmddesc((u64 *)hwdesc);
1878
1879 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1880 netxen_set_tx_port(first_desc, adapter->portnum);
1881
1882 for (i = 0; i < frag_count; i++) {
1883
1884 k = i % 4;
1885
1886 if ((k == 0) && (i > 0)) {
1887 /* move to next desc.*/
1888 producer = get_next_index(producer, num_txd);
1889 hwdesc = &tx_ring->desc_head[producer];
1890 netxen_clear_cmddesc((u64 *)hwdesc);
1891 tx_ring->cmd_buf_arr[producer].skb = NULL;
1892 }
1893
1894 buffrag = &pbuf->frag_array[i];
1895
1896 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1897 switch (k) {
1898 case 0:
1899 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1900 break;
1901 case 1:
1902 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1903 break;
1904 case 2:
1905 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1906 break;
1907 case 3:
1908 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1909 break;
1910 }
1911 }
1912
1913 tx_ring->producer = get_next_index(producer, num_txd);
1914
1915 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1916
1917 netxen_nic_update_cmd_producer(adapter, tx_ring);
1918
1919 adapter->stats.txbytes += skb->len;
1920 adapter->stats.xmitcalled++;
1921
1922 return NETDEV_TX_OK;
1923
1924 drop_packet:
1925 adapter->stats.txdropped++;
1926 dev_kfree_skb_any(skb);
1927 return NETDEV_TX_OK;
1928 }
1929
1930 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1931 {
1932 struct net_device *netdev = adapter->netdev;
1933 uint32_t temp, temp_state, temp_val;
1934 int rv = 0;
1935
1936 temp = NXRD32(adapter, CRB_TEMP_STATE);
1937
1938 temp_state = nx_get_temp_state(temp);
1939 temp_val = nx_get_temp_val(temp);
1940
1941 if (temp_state == NX_TEMP_PANIC) {
1942 printk(KERN_ALERT
1943 "%s: Device temperature %d degrees C exceeds"
1944 " maximum allowed. Hardware has been shut down.\n",
1945 netdev->name, temp_val);
1946 rv = 1;
1947 } else if (temp_state == NX_TEMP_WARN) {
1948 if (adapter->temp == NX_TEMP_NORMAL) {
1949 printk(KERN_ALERT
1950 "%s: Device temperature %d degrees C "
1951 "exceeds operating range."
1952 " Immediate action needed.\n",
1953 netdev->name, temp_val);
1954 }
1955 } else {
1956 if (adapter->temp == NX_TEMP_WARN) {
1957 printk(KERN_INFO
1958 "%s: Device temperature is now %d degrees C"
1959 " in normal range.\n", netdev->name,
1960 temp_val);
1961 }
1962 }
1963 adapter->temp = temp_state;
1964 return rv;
1965 }
1966
1967 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1968 {
1969 struct net_device *netdev = adapter->netdev;
1970
1971 if (adapter->ahw.linkup && !linkup) {
1972 printk(KERN_INFO "%s: %s NIC Link is down\n",
1973 netxen_nic_driver_name, netdev->name);
1974 adapter->ahw.linkup = 0;
1975 if (netif_running(netdev)) {
1976 netif_carrier_off(netdev);
1977 netif_stop_queue(netdev);
1978 }
1979 adapter->link_changed = !adapter->has_link_events;
1980 } else if (!adapter->ahw.linkup && linkup) {
1981 printk(KERN_INFO "%s: %s NIC Link is up\n",
1982 netxen_nic_driver_name, netdev->name);
1983 adapter->ahw.linkup = 1;
1984 if (netif_running(netdev)) {
1985 netif_carrier_on(netdev);
1986 netif_wake_queue(netdev);
1987 }
1988 adapter->link_changed = !adapter->has_link_events;
1989 }
1990 }
1991
1992 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1993 {
1994 u32 val, port, linkup;
1995
1996 port = adapter->physical_port;
1997
1998 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1999 val = NXRD32(adapter, CRB_XG_STATE_P3);
2000 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2001 linkup = (val == XG_LINK_UP_P3);
2002 } else {
2003 val = NXRD32(adapter, CRB_XG_STATE);
2004 val = (val >> port*8) & 0xff;
2005 linkup = (val == XG_LINK_UP);
2006 }
2007
2008 netxen_advert_link_change(adapter, linkup);
2009 }
2010
2011 static void netxen_tx_timeout(struct net_device *netdev)
2012 {
2013 struct netxen_adapter *adapter = netdev_priv(netdev);
2014
2015 if (test_bit(__NX_RESETTING, &adapter->state))
2016 return;
2017
2018 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2019 schedule_work(&adapter->tx_timeout_task);
2020 }
2021
2022 static void netxen_tx_timeout_task(struct work_struct *work)
2023 {
2024 struct netxen_adapter *adapter =
2025 container_of(work, struct netxen_adapter, tx_timeout_task);
2026
2027 if (!netif_running(adapter->netdev))
2028 return;
2029
2030 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2031 return;
2032
2033 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2034 goto request_reset;
2035
2036 rtnl_lock();
2037 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2038 /* try to scrub interrupt */
2039 netxen_napi_disable(adapter);
2040
2041 netxen_napi_enable(adapter);
2042
2043 netif_wake_queue(adapter->netdev);
2044
2045 clear_bit(__NX_RESETTING, &adapter->state);
2046 } else {
2047 clear_bit(__NX_RESETTING, &adapter->state);
2048 if (netxen_nic_reset_context(adapter)) {
2049 rtnl_unlock();
2050 goto request_reset;
2051 }
2052 }
2053 adapter->netdev->trans_start = jiffies;
2054 rtnl_unlock();
2055 return;
2056
2057 request_reset:
2058 adapter->need_fw_reset = 1;
2059 clear_bit(__NX_RESETTING, &adapter->state);
2060 }
2061
2062 static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
2063 {
2064 struct netxen_adapter *adapter = netdev_priv(netdev);
2065 struct net_device_stats *stats = &netdev->stats;
2066
2067 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2068 stats->tx_packets = adapter->stats.xmitfinished;
2069 stats->rx_bytes = adapter->stats.rxbytes;
2070 stats->tx_bytes = adapter->stats.txbytes;
2071 stats->rx_dropped = adapter->stats.rxdropped;
2072 stats->tx_dropped = adapter->stats.txdropped;
2073
2074 return stats;
2075 }
2076
2077 static irqreturn_t netxen_intr(int irq, void *data)
2078 {
2079 struct nx_host_sds_ring *sds_ring = data;
2080 struct netxen_adapter *adapter = sds_ring->adapter;
2081 u32 status = 0;
2082
2083 status = readl(adapter->isr_int_vec);
2084
2085 if (!(status & adapter->int_vec_bit))
2086 return IRQ_NONE;
2087
2088 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2089 /* check interrupt state machine, to be sure */
2090 status = readl(adapter->crb_int_state_reg);
2091 if (!ISR_LEGACY_INT_TRIGGERED(status))
2092 return IRQ_NONE;
2093
2094 } else {
2095 unsigned long our_int = 0;
2096
2097 our_int = readl(adapter->crb_int_state_reg);
2098
2099 /* not our interrupt */
2100 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2101 return IRQ_NONE;
2102
2103 /* claim interrupt */
2104 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2105
2106 /* clear interrupt */
2107 netxen_nic_disable_int(sds_ring);
2108 }
2109
2110 writel(0xffffffff, adapter->tgt_status_reg);
2111 /* read twice to ensure write is flushed */
2112 readl(adapter->isr_int_vec);
2113 readl(adapter->isr_int_vec);
2114
2115 napi_schedule(&sds_ring->napi);
2116
2117 return IRQ_HANDLED;
2118 }
2119
2120 static irqreturn_t netxen_msi_intr(int irq, void *data)
2121 {
2122 struct nx_host_sds_ring *sds_ring = data;
2123 struct netxen_adapter *adapter = sds_ring->adapter;
2124
2125 /* clear interrupt */
2126 writel(0xffffffff, adapter->tgt_status_reg);
2127
2128 napi_schedule(&sds_ring->napi);
2129 return IRQ_HANDLED;
2130 }
2131
2132 static irqreturn_t netxen_msix_intr(int irq, void *data)
2133 {
2134 struct nx_host_sds_ring *sds_ring = data;
2135
2136 napi_schedule(&sds_ring->napi);
2137 return IRQ_HANDLED;
2138 }
2139
2140 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2141 {
2142 struct nx_host_sds_ring *sds_ring =
2143 container_of(napi, struct nx_host_sds_ring, napi);
2144
2145 struct netxen_adapter *adapter = sds_ring->adapter;
2146
2147 int tx_complete;
2148 int work_done;
2149
2150 tx_complete = netxen_process_cmd_ring(adapter);
2151
2152 work_done = netxen_process_rcv_ring(sds_ring, budget);
2153
2154 if ((work_done < budget) && tx_complete) {
2155 napi_complete(&sds_ring->napi);
2156 if (test_bit(__NX_DEV_UP, &adapter->state))
2157 netxen_nic_enable_int(sds_ring);
2158 }
2159
2160 return work_done;
2161 }
2162
2163 #ifdef CONFIG_NET_POLL_CONTROLLER
2164 static void netxen_nic_poll_controller(struct net_device *netdev)
2165 {
2166 int ring;
2167 struct nx_host_sds_ring *sds_ring;
2168 struct netxen_adapter *adapter = netdev_priv(netdev);
2169 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2170
2171 disable_irq(adapter->irq);
2172 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2173 sds_ring = &recv_ctx->sds_rings[ring];
2174 netxen_intr(adapter->irq, sds_ring);
2175 }
2176 enable_irq(adapter->irq);
2177 }
2178 #endif
2179
2180 static int
2181 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2182 {
2183 int count;
2184 if (netxen_api_lock(adapter))
2185 return -EIO;
2186
2187 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2188
2189 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2190
2191 netxen_api_unlock(adapter);
2192 return count;
2193 }
2194
2195 static int
2196 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2197 {
2198 int count;
2199 if (netxen_api_lock(adapter))
2200 return -EIO;
2201
2202 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2203 WARN_ON(count == 0);
2204
2205 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2206
2207 if (count == 0)
2208 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2209
2210 netxen_api_unlock(adapter);
2211 return count;
2212 }
2213
2214 static int
2215 nx_dev_request_aer(struct netxen_adapter *adapter)
2216 {
2217 u32 state;
2218 int ret = -EINVAL;
2219
2220 if (netxen_api_lock(adapter))
2221 return ret;
2222
2223 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2224
2225 if (state == NX_DEV_NEED_AER)
2226 ret = 0;
2227 else if (state == NX_DEV_READY) {
2228 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2229 ret = 0;
2230 }
2231
2232 netxen_api_unlock(adapter);
2233 return ret;
2234 }
2235
2236 static int
2237 nx_dev_request_reset(struct netxen_adapter *adapter)
2238 {
2239 u32 state;
2240 int ret = -EINVAL;
2241
2242 if (netxen_api_lock(adapter))
2243 return ret;
2244
2245 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2246
2247 if (state == NX_DEV_NEED_RESET)
2248 ret = 0;
2249 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2250 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2251 ret = 0;
2252 }
2253
2254 netxen_api_unlock(adapter);
2255
2256 return ret;
2257 }
2258
2259 static int
2260 netxen_can_start_firmware(struct netxen_adapter *adapter)
2261 {
2262 int count;
2263 int can_start = 0;
2264
2265 if (netxen_api_lock(adapter))
2266 return 0;
2267
2268 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2269
2270 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2271 count = 0;
2272
2273 if (count == 0) {
2274 can_start = 1;
2275 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2276 }
2277
2278 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2279
2280 netxen_api_unlock(adapter);
2281
2282 return can_start;
2283 }
2284
2285 static void
2286 netxen_schedule_work(struct netxen_adapter *adapter,
2287 work_func_t func, int delay)
2288 {
2289 INIT_DELAYED_WORK(&adapter->fw_work, func);
2290 schedule_delayed_work(&adapter->fw_work, delay);
2291 }
2292
2293 static void
2294 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2295 {
2296 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2297 msleep(10);
2298
2299 cancel_delayed_work_sync(&adapter->fw_work);
2300 }
2301
2302 static void
2303 netxen_attach_work(struct work_struct *work)
2304 {
2305 struct netxen_adapter *adapter = container_of(work,
2306 struct netxen_adapter, fw_work.work);
2307 struct net_device *netdev = adapter->netdev;
2308 int err = 0;
2309
2310 if (netif_running(netdev)) {
2311 err = netxen_nic_attach(adapter);
2312 if (err)
2313 goto done;
2314
2315 err = netxen_nic_up(adapter, netdev);
2316 if (err) {
2317 netxen_nic_detach(adapter);
2318 goto done;
2319 }
2320
2321 netxen_config_indev_addr(netdev, NETDEV_UP);
2322 }
2323
2324 netif_device_attach(netdev);
2325
2326 done:
2327 adapter->fw_fail_cnt = 0;
2328 clear_bit(__NX_RESETTING, &adapter->state);
2329 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2330 }
2331
2332 static void
2333 netxen_fwinit_work(struct work_struct *work)
2334 {
2335 struct netxen_adapter *adapter = container_of(work,
2336 struct netxen_adapter, fw_work.work);
2337 int dev_state;
2338
2339 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2340
2341 switch (dev_state) {
2342 case NX_DEV_COLD:
2343 case NX_DEV_READY:
2344 if (!netxen_start_firmware(adapter)) {
2345 netxen_schedule_work(adapter, netxen_attach_work, 0);
2346 return;
2347 }
2348 break;
2349
2350 case NX_DEV_NEED_RESET:
2351 case NX_DEV_INITALIZING:
2352 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2353 netxen_schedule_work(adapter,
2354 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2355 return;
2356 }
2357
2358 case NX_DEV_FAILED:
2359 default:
2360 nx_incr_dev_ref_cnt(adapter);
2361 break;
2362 }
2363
2364 clear_bit(__NX_RESETTING, &adapter->state);
2365 }
2366
2367 static void
2368 netxen_detach_work(struct work_struct *work)
2369 {
2370 struct netxen_adapter *adapter = container_of(work,
2371 struct netxen_adapter, fw_work.work);
2372 struct net_device *netdev = adapter->netdev;
2373 int ref_cnt, delay;
2374 u32 status;
2375
2376 netif_device_detach(netdev);
2377
2378 netxen_nic_down(adapter, netdev);
2379
2380 rtnl_lock();
2381 netxen_nic_detach(adapter);
2382 rtnl_unlock();
2383
2384 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2385
2386 if (status & NX_RCODE_FATAL_ERROR)
2387 goto err_ret;
2388
2389 if (adapter->temp == NX_TEMP_PANIC)
2390 goto err_ret;
2391
2392 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2393
2394 if (ref_cnt == -EIO)
2395 goto err_ret;
2396
2397 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2398
2399 adapter->fw_wait_cnt = 0;
2400 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2401
2402 return;
2403
2404 err_ret:
2405 clear_bit(__NX_RESETTING, &adapter->state);
2406 }
2407
2408 static int
2409 netxen_check_health(struct netxen_adapter *adapter)
2410 {
2411 u32 state, heartbit;
2412 struct net_device *netdev = adapter->netdev;
2413
2414 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2415 if (state == NX_DEV_NEED_AER)
2416 return 0;
2417
2418 if (netxen_nic_check_temp(adapter))
2419 goto detach;
2420
2421 if (adapter->need_fw_reset) {
2422 if (nx_dev_request_reset(adapter))
2423 return 0;
2424 goto detach;
2425 }
2426
2427 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2428 * 1. Tx timeout 2. Fw hang
2429 * Send request to destroy context in case of tx timeout only
2430 * and doesn't required in case of Fw hang
2431 */
2432 if (state == NX_DEV_NEED_RESET) {
2433 adapter->need_fw_reset = 1;
2434 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2435 goto detach;
2436 }
2437
2438 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2439 return 0;
2440
2441 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2442 if (heartbit != adapter->heartbit) {
2443 adapter->heartbit = heartbit;
2444 adapter->fw_fail_cnt = 0;
2445 if (adapter->need_fw_reset)
2446 goto detach;
2447 return 0;
2448 }
2449
2450 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2451 return 0;
2452
2453 if (nx_dev_request_reset(adapter))
2454 return 0;
2455
2456 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2457
2458 dev_info(&netdev->dev, "firmware hang detected\n");
2459
2460 detach:
2461 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2462 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2463 netxen_schedule_work(adapter, netxen_detach_work, 0);
2464 return 1;
2465 }
2466
2467 static void
2468 netxen_fw_poll_work(struct work_struct *work)
2469 {
2470 struct netxen_adapter *adapter = container_of(work,
2471 struct netxen_adapter, fw_work.work);
2472
2473 if (test_bit(__NX_RESETTING, &adapter->state))
2474 goto reschedule;
2475
2476 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2477 if (!adapter->has_link_events) {
2478
2479 netxen_nic_handle_phy_intr(adapter);
2480
2481 if (adapter->link_changed)
2482 netxen_nic_set_link_parameters(adapter);
2483 }
2484 }
2485
2486 if (netxen_check_health(adapter))
2487 return;
2488
2489 reschedule:
2490 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2491 }
2492
2493 static ssize_t
2494 netxen_store_bridged_mode(struct device *dev,
2495 struct device_attribute *attr, const char *buf, size_t len)
2496 {
2497 struct net_device *net = to_net_dev(dev);
2498 struct netxen_adapter *adapter = netdev_priv(net);
2499 unsigned long new;
2500 int ret = -EINVAL;
2501
2502 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2503 goto err_out;
2504
2505 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2506 goto err_out;
2507
2508 if (strict_strtoul(buf, 2, &new))
2509 goto err_out;
2510
2511 if (!netxen_config_bridged_mode(adapter, !!new))
2512 ret = len;
2513
2514 err_out:
2515 return ret;
2516 }
2517
2518 static ssize_t
2519 netxen_show_bridged_mode(struct device *dev,
2520 struct device_attribute *attr, char *buf)
2521 {
2522 struct net_device *net = to_net_dev(dev);
2523 struct netxen_adapter *adapter;
2524 int bridged_mode = 0;
2525
2526 adapter = netdev_priv(net);
2527
2528 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2529 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2530
2531 return sprintf(buf, "%d\n", bridged_mode);
2532 }
2533
2534 static struct device_attribute dev_attr_bridged_mode = {
2535 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2536 .show = netxen_show_bridged_mode,
2537 .store = netxen_store_bridged_mode,
2538 };
2539
2540 static ssize_t
2541 netxen_store_diag_mode(struct device *dev,
2542 struct device_attribute *attr, const char *buf, size_t len)
2543 {
2544 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2545 unsigned long new;
2546
2547 if (strict_strtoul(buf, 2, &new))
2548 return -EINVAL;
2549
2550 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2551 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2552
2553 return len;
2554 }
2555
2556 static ssize_t
2557 netxen_show_diag_mode(struct device *dev,
2558 struct device_attribute *attr, char *buf)
2559 {
2560 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2561
2562 return sprintf(buf, "%d\n",
2563 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2564 }
2565
2566 static struct device_attribute dev_attr_diag_mode = {
2567 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2568 .show = netxen_show_diag_mode,
2569 .store = netxen_store_diag_mode,
2570 };
2571
2572 static int
2573 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2574 loff_t offset, size_t size)
2575 {
2576 size_t crb_size = 4;
2577
2578 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2579 return -EIO;
2580
2581 if (offset < NETXEN_PCI_CRBSPACE) {
2582 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2583 return -EINVAL;
2584
2585 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2586 NETXEN_PCI_CAMQM_2M_END))
2587 crb_size = 8;
2588 else
2589 return -EINVAL;
2590 }
2591
2592 if ((size != crb_size) || (offset & (crb_size-1)))
2593 return -EINVAL;
2594
2595 return 0;
2596 }
2597
2598 static ssize_t
2599 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2600 struct bin_attribute *attr,
2601 char *buf, loff_t offset, size_t size)
2602 {
2603 struct device *dev = container_of(kobj, struct device, kobj);
2604 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2605 u32 data;
2606 u64 qmdata;
2607 int ret;
2608
2609 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2610 if (ret != 0)
2611 return ret;
2612
2613 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2614 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2615 NETXEN_PCI_CAMQM_2M_END)) {
2616 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2617 memcpy(buf, &qmdata, size);
2618 } else {
2619 data = NXRD32(adapter, offset);
2620 memcpy(buf, &data, size);
2621 }
2622
2623 return size;
2624 }
2625
2626 static ssize_t
2627 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2628 struct bin_attribute *attr,
2629 char *buf, loff_t offset, size_t size)
2630 {
2631 struct device *dev = container_of(kobj, struct device, kobj);
2632 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2633 u32 data;
2634 u64 qmdata;
2635 int ret;
2636
2637 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2638 if (ret != 0)
2639 return ret;
2640
2641 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2642 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2643 NETXEN_PCI_CAMQM_2M_END)) {
2644 memcpy(&qmdata, buf, size);
2645 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2646 } else {
2647 memcpy(&data, buf, size);
2648 NXWR32(adapter, offset, data);
2649 }
2650
2651 return size;
2652 }
2653
2654 static int
2655 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2656 loff_t offset, size_t size)
2657 {
2658 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2659 return -EIO;
2660
2661 if ((size != 8) || (offset & 0x7))
2662 return -EIO;
2663
2664 return 0;
2665 }
2666
2667 static ssize_t
2668 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2669 struct bin_attribute *attr,
2670 char *buf, loff_t offset, size_t size)
2671 {
2672 struct device *dev = container_of(kobj, struct device, kobj);
2673 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2674 u64 data;
2675 int ret;
2676
2677 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2678 if (ret != 0)
2679 return ret;
2680
2681 if (adapter->pci_mem_read(adapter, offset, &data))
2682 return -EIO;
2683
2684 memcpy(buf, &data, size);
2685
2686 return size;
2687 }
2688
2689 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2690 struct bin_attribute *attr, char *buf,
2691 loff_t offset, size_t size)
2692 {
2693 struct device *dev = container_of(kobj, struct device, kobj);
2694 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2695 u64 data;
2696 int ret;
2697
2698 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2699 if (ret != 0)
2700 return ret;
2701
2702 memcpy(&data, buf, size);
2703
2704 if (adapter->pci_mem_write(adapter, offset, data))
2705 return -EIO;
2706
2707 return size;
2708 }
2709
2710
2711 static struct bin_attribute bin_attr_crb = {
2712 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2713 .size = 0,
2714 .read = netxen_sysfs_read_crb,
2715 .write = netxen_sysfs_write_crb,
2716 };
2717
2718 static struct bin_attribute bin_attr_mem = {
2719 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2720 .size = 0,
2721 .read = netxen_sysfs_read_mem,
2722 .write = netxen_sysfs_write_mem,
2723 };
2724
2725
2726 static void
2727 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2728 {
2729 struct net_device *netdev = adapter->netdev;
2730 struct device *dev = &netdev->dev;
2731
2732 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2733 /* bridged_mode control */
2734 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2735 dev_warn(&netdev->dev,
2736 "failed to create bridged_mode sysfs entry\n");
2737 }
2738 }
2739 }
2740
2741 static void
2742 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2743 {
2744 struct net_device *netdev = adapter->netdev;
2745 struct device *dev = &netdev->dev;
2746
2747 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2748 device_remove_file(dev, &dev_attr_bridged_mode);
2749 }
2750
2751 static void
2752 netxen_create_diag_entries(struct netxen_adapter *adapter)
2753 {
2754 struct pci_dev *pdev = adapter->pdev;
2755 struct device *dev;
2756
2757 dev = &pdev->dev;
2758 if (device_create_file(dev, &dev_attr_diag_mode))
2759 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2760 if (device_create_bin_file(dev, &bin_attr_crb))
2761 dev_info(dev, "failed to create crb sysfs entry\n");
2762 if (device_create_bin_file(dev, &bin_attr_mem))
2763 dev_info(dev, "failed to create mem sysfs entry\n");
2764 }
2765
2766
2767 static void
2768 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2769 {
2770 struct pci_dev *pdev = adapter->pdev;
2771 struct device *dev = &pdev->dev;
2772
2773 device_remove_file(dev, &dev_attr_diag_mode);
2774 device_remove_bin_file(dev, &bin_attr_crb);
2775 device_remove_bin_file(dev, &bin_attr_mem);
2776 }
2777
2778 #ifdef CONFIG_INET
2779
2780 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2781
2782 static int
2783 netxen_destip_supported(struct netxen_adapter *adapter)
2784 {
2785 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2786 return 0;
2787
2788 if (adapter->ahw.cut_through)
2789 return 0;
2790
2791 return 1;
2792 }
2793
2794 static void
2795 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2796 {
2797 struct in_device *indev;
2798 struct netxen_adapter *adapter = netdev_priv(dev);
2799
2800 if (!netxen_destip_supported(adapter))
2801 return;
2802
2803 indev = in_dev_get(dev);
2804 if (!indev)
2805 return;
2806
2807 for_ifa(indev) {
2808 switch (event) {
2809 case NETDEV_UP:
2810 netxen_config_ipaddr(adapter,
2811 ifa->ifa_address, NX_IP_UP);
2812 break;
2813 case NETDEV_DOWN:
2814 netxen_config_ipaddr(adapter,
2815 ifa->ifa_address, NX_IP_DOWN);
2816 break;
2817 default:
2818 break;
2819 }
2820 } endfor_ifa(indev);
2821
2822 in_dev_put(indev);
2823 }
2824
2825 static int netxen_netdev_event(struct notifier_block *this,
2826 unsigned long event, void *ptr)
2827 {
2828 struct netxen_adapter *adapter;
2829 struct net_device *dev = (struct net_device *)ptr;
2830
2831 recheck:
2832 if (dev == NULL)
2833 goto done;
2834
2835 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2836 dev = vlan_dev_real_dev(dev);
2837 goto recheck;
2838 }
2839
2840 if (!is_netxen_netdev(dev))
2841 goto done;
2842
2843 adapter = netdev_priv(dev);
2844
2845 if (!adapter)
2846 goto done;
2847
2848 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2849 goto done;
2850
2851 netxen_config_indev_addr(dev, event);
2852 done:
2853 return NOTIFY_DONE;
2854 }
2855
2856 static int
2857 netxen_inetaddr_event(struct notifier_block *this,
2858 unsigned long event, void *ptr)
2859 {
2860 struct netxen_adapter *adapter;
2861 struct net_device *dev;
2862
2863 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2864
2865 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2866
2867 recheck:
2868 if (dev == NULL || !netif_running(dev))
2869 goto done;
2870
2871 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2872 dev = vlan_dev_real_dev(dev);
2873 goto recheck;
2874 }
2875
2876 if (!is_netxen_netdev(dev))
2877 goto done;
2878
2879 adapter = netdev_priv(dev);
2880
2881 if (!adapter || !netxen_destip_supported(adapter))
2882 goto done;
2883
2884 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2885 goto done;
2886
2887 switch (event) {
2888 case NETDEV_UP:
2889 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2890 break;
2891 case NETDEV_DOWN:
2892 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2893 break;
2894 default:
2895 break;
2896 }
2897
2898 done:
2899 return NOTIFY_DONE;
2900 }
2901
2902 static struct notifier_block netxen_netdev_cb = {
2903 .notifier_call = netxen_netdev_event,
2904 };
2905
2906 static struct notifier_block netxen_inetaddr_cb = {
2907 .notifier_call = netxen_inetaddr_event,
2908 };
2909 #else
2910 static void
2911 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2912 { }
2913 #endif
2914
2915 static struct pci_error_handlers netxen_err_handler = {
2916 .error_detected = netxen_io_error_detected,
2917 .slot_reset = netxen_io_slot_reset,
2918 .resume = netxen_io_resume,
2919 };
2920
2921 static struct pci_driver netxen_driver = {
2922 .name = netxen_nic_driver_name,
2923 .id_table = netxen_pci_tbl,
2924 .probe = netxen_nic_probe,
2925 .remove = __devexit_p(netxen_nic_remove),
2926 #ifdef CONFIG_PM
2927 .suspend = netxen_nic_suspend,
2928 .resume = netxen_nic_resume,
2929 #endif
2930 .shutdown = netxen_nic_shutdown,
2931 .err_handler = &netxen_err_handler
2932 };
2933
2934 static int __init netxen_init_module(void)
2935 {
2936 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2937
2938 #ifdef CONFIG_INET
2939 register_netdevice_notifier(&netxen_netdev_cb);
2940 register_inetaddr_notifier(&netxen_inetaddr_cb);
2941 #endif
2942 return pci_register_driver(&netxen_driver);
2943 }
2944
2945 module_init(netxen_init_module);
2946
2947 static void __exit netxen_exit_module(void)
2948 {
2949 pci_unregister_driver(&netxen_driver);
2950
2951 #ifdef CONFIG_INET
2952 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2953 unregister_netdevice_notifier(&netxen_netdev_cb);
2954 #endif
2955 }
2956
2957 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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