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proc: use seq_puts()/seq_putc() where possible
[linux-2.6/next.git] / drivers / net / netxen / netxen_nic_main.c
blob33fac32e0d9fd9dce1333b6f2ad7a7d4d615121a
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 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
766 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
767 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
768 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
769 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
770 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
771 }
772
773 adapter->msix_supported = 0;
774 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
775 adapter->msix_supported = !!use_msi_x;
776 adapter->rss_supported = !!use_msi_x;
777 } else {
778 u32 flashed_ver = 0;
779 netxen_rom_fast_read(adapter,
780 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
781 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
782
783 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
784 switch (adapter->ahw.board_type) {
785 case NETXEN_BRDTYPE_P2_SB31_10G:
786 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
787 adapter->msix_supported = !!use_msi_x;
788 adapter->rss_supported = !!use_msi_x;
789 break;
790 default:
791 break;
792 }
793 }
794 }
795
796 adapter->num_txd = MAX_CMD_DESCRIPTORS;
797
798 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
799 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
800 adapter->max_rds_rings = 3;
801 } else {
802 adapter->num_lro_rxd = 0;
803 adapter->max_rds_rings = 2;
804 }
805 }
806
807 static int
808 netxen_start_firmware(struct netxen_adapter *adapter)
809 {
810 int val, err, first_boot;
811 struct pci_dev *pdev = adapter->pdev;
812
813 /* required for NX2031 dummy dma */
814 err = nx_set_dma_mask(adapter);
815 if (err)
816 return err;
817
818 if (!netxen_can_start_firmware(adapter))
819 goto wait_init;
820
821 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
822
823 err = netxen_check_hw_init(adapter, first_boot);
824 if (err) {
825 dev_err(&pdev->dev, "error in init HW init sequence\n");
826 return err;
827 }
828
829 netxen_request_firmware(adapter);
830
831 err = netxen_need_fw_reset(adapter);
832 if (err < 0)
833 goto err_out;
834 if (err == 0)
835 goto wait_init;
836
837 if (first_boot != 0x55555555) {
838 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
839 netxen_pinit_from_rom(adapter);
840 msleep(1);
841 }
842
843 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
844 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
845 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
846
847 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
848 netxen_set_port_mode(adapter);
849
850 err = netxen_load_firmware(adapter);
851 if (err)
852 goto err_out;
853
854 netxen_release_firmware(adapter);
855
856 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
857
858 /* Initialize multicast addr pool owners */
859 val = 0x7654;
860 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
861 val |= 0x0f000000;
862 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
863
864 }
865
866 err = netxen_init_dummy_dma(adapter);
867 if (err)
868 goto err_out;
869
870 /*
871 * Tell the hardware our version number.
872 */
873 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
874 | ((_NETXEN_NIC_LINUX_MINOR << 8))
875 | (_NETXEN_NIC_LINUX_SUBVERSION);
876 NXWR32(adapter, CRB_DRIVER_VERSION, val);
877
878 wait_init:
879 /* Handshake with the card before we register the devices. */
880 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
881 if (err) {
882 netxen_free_dummy_dma(adapter);
883 goto err_out;
884 }
885
886 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
887
888 nx_update_dma_mask(adapter);
889
890 netxen_check_options(adapter);
891
892 adapter->need_fw_reset = 0;
893
894 /* fall through and release firmware */
895
896 err_out:
897 netxen_release_firmware(adapter);
898 return err;
899 }
900
901 static int
902 netxen_nic_request_irq(struct netxen_adapter *adapter)
903 {
904 irq_handler_t handler;
905 struct nx_host_sds_ring *sds_ring;
906 int err, ring;
907
908 unsigned long flags = IRQF_SAMPLE_RANDOM;
909 struct net_device *netdev = adapter->netdev;
910 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
911
912 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
913 handler = netxen_msix_intr;
914 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
915 handler = netxen_msi_intr;
916 else {
917 flags |= IRQF_SHARED;
918 handler = netxen_intr;
919 }
920 adapter->irq = netdev->irq;
921
922 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
923 sds_ring = &recv_ctx->sds_rings[ring];
924 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
925 err = request_irq(sds_ring->irq, handler,
926 flags, sds_ring->name, sds_ring);
927 if (err)
928 return err;
929 }
930
931 return 0;
932 }
933
934 static void
935 netxen_nic_free_irq(struct netxen_adapter *adapter)
936 {
937 int ring;
938 struct nx_host_sds_ring *sds_ring;
939
940 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
941
942 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
943 sds_ring = &recv_ctx->sds_rings[ring];
944 free_irq(sds_ring->irq, sds_ring);
945 }
946 }
947
948 static void
949 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
950 {
951 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
952 adapter->coal.normal.data.rx_time_us =
953 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
954 adapter->coal.normal.data.rx_packets =
955 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
956 adapter->coal.normal.data.tx_time_us =
957 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
958 adapter->coal.normal.data.tx_packets =
959 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
960 }
961
962 /* with rtnl_lock */
963 static int
964 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
965 {
966 int err;
967
968 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
969 return -EIO;
970
971 err = adapter->init_port(adapter, adapter->physical_port);
972 if (err) {
973 printk(KERN_ERR "%s: Failed to initialize port %d\n",
974 netxen_nic_driver_name, adapter->portnum);
975 return err;
976 }
977 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
978 adapter->macaddr_set(adapter, adapter->mac_addr);
979
980 adapter->set_multi(netdev);
981 adapter->set_mtu(adapter, netdev->mtu);
982
983 adapter->ahw.linkup = 0;
984
985 if (adapter->max_sds_rings > 1)
986 netxen_config_rss(adapter, 1);
987
988 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
989 netxen_config_intr_coalesce(adapter);
990
991 if (netdev->features & NETIF_F_LRO)
992 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
993
994 netxen_napi_enable(adapter);
995
996 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
997 netxen_linkevent_request(adapter, 1);
998 else
999 netxen_nic_set_link_parameters(adapter);
1000
1001 set_bit(__NX_DEV_UP, &adapter->state);
1002 return 0;
1003 }
1004
1005 /* Usage: During resume and firmware recovery module.*/
1006
1007 static inline int
1008 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1009 {
1010 int err = 0;
1011
1012 rtnl_lock();
1013 if (netif_running(netdev))
1014 err = __netxen_nic_up(adapter, netdev);
1015 rtnl_unlock();
1016
1017 return err;
1018 }
1019
1020 /* with rtnl_lock */
1021 static void
1022 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1023 {
1024 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1025 return;
1026
1027 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1028 return;
1029
1030 smp_mb();
1031 spin_lock(&adapter->tx_clean_lock);
1032 netif_carrier_off(netdev);
1033 netif_tx_disable(netdev);
1034
1035 if (adapter->stop_port)
1036 adapter->stop_port(adapter);
1037
1038 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1039 netxen_p3_free_mac_list(adapter);
1040
1041 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1042
1043 netxen_napi_disable(adapter);
1044
1045 netxen_release_tx_buffers(adapter);
1046 spin_unlock(&adapter->tx_clean_lock);
1047 }
1048
1049 /* Usage: During suspend and firmware recovery module */
1050
1051 static inline void
1052 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1053 {
1054 rtnl_lock();
1055 if (netif_running(netdev))
1056 __netxen_nic_down(adapter, netdev);
1057 rtnl_unlock();
1058
1059 }
1060
1061 static int
1062 netxen_nic_attach(struct netxen_adapter *adapter)
1063 {
1064 struct net_device *netdev = adapter->netdev;
1065 struct pci_dev *pdev = adapter->pdev;
1066 int err, ring;
1067 struct nx_host_rds_ring *rds_ring;
1068 struct nx_host_tx_ring *tx_ring;
1069
1070 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1071 return 0;
1072
1073 err = netxen_init_firmware(adapter);
1074 if (err)
1075 return err;
1076
1077 err = netxen_napi_add(adapter, netdev);
1078 if (err)
1079 return err;
1080
1081 err = netxen_alloc_sw_resources(adapter);
1082 if (err) {
1083 printk(KERN_ERR "%s: Error in setting sw resources\n",
1084 netdev->name);
1085 return err;
1086 }
1087
1088 err = netxen_alloc_hw_resources(adapter);
1089 if (err) {
1090 printk(KERN_ERR "%s: Error in setting hw resources\n",
1091 netdev->name);
1092 goto err_out_free_sw;
1093 }
1094
1095 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1096 tx_ring = adapter->tx_ring;
1097 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1098 crb_cmd_producer[adapter->portnum]);
1099 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1100 crb_cmd_consumer[adapter->portnum]);
1101
1102 tx_ring->producer = 0;
1103 tx_ring->sw_consumer = 0;
1104
1105 netxen_nic_update_cmd_producer(adapter, tx_ring);
1106 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1107 }
1108
1109 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1110 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1111 netxen_post_rx_buffers(adapter, ring, rds_ring);
1112 }
1113
1114 err = netxen_nic_request_irq(adapter);
1115 if (err) {
1116 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1117 netdev->name);
1118 goto err_out_free_rxbuf;
1119 }
1120
1121 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1122 netxen_nic_init_coalesce_defaults(adapter);
1123
1124 netxen_create_sysfs_entries(adapter);
1125
1126 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1127 return 0;
1128
1129 err_out_free_rxbuf:
1130 netxen_release_rx_buffers(adapter);
1131 netxen_free_hw_resources(adapter);
1132 err_out_free_sw:
1133 netxen_free_sw_resources(adapter);
1134 return err;
1135 }
1136
1137 static void
1138 netxen_nic_detach(struct netxen_adapter *adapter)
1139 {
1140 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1141 return;
1142
1143 netxen_remove_sysfs_entries(adapter);
1144
1145 netxen_free_hw_resources(adapter);
1146 netxen_release_rx_buffers(adapter);
1147 netxen_nic_free_irq(adapter);
1148 netxen_napi_del(adapter);
1149 netxen_free_sw_resources(adapter);
1150
1151 adapter->is_up = 0;
1152 }
1153
1154 int
1155 netxen_nic_reset_context(struct netxen_adapter *adapter)
1156 {
1157 int err = 0;
1158 struct net_device *netdev = adapter->netdev;
1159
1160 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1161 return -EBUSY;
1162
1163 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1164
1165 netif_device_detach(netdev);
1166
1167 if (netif_running(netdev))
1168 __netxen_nic_down(adapter, netdev);
1169
1170 netxen_nic_detach(adapter);
1171
1172 if (netif_running(netdev)) {
1173 err = netxen_nic_attach(adapter);
1174 if (!err)
1175 err = __netxen_nic_up(adapter, netdev);
1176
1177 if (err)
1178 goto done;
1179 }
1180
1181 netif_device_attach(netdev);
1182 }
1183
1184 done:
1185 clear_bit(__NX_RESETTING, &adapter->state);
1186 return err;
1187 }
1188
1189 static int
1190 netxen_setup_netdev(struct netxen_adapter *adapter,
1191 struct net_device *netdev)
1192 {
1193 int err = 0;
1194 struct pci_dev *pdev = adapter->pdev;
1195
1196 adapter->rx_csum = 1;
1197 adapter->mc_enabled = 0;
1198 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1199 adapter->max_mc_count = 38;
1200 else
1201 adapter->max_mc_count = 16;
1202
1203 netdev->netdev_ops = &netxen_netdev_ops;
1204 netdev->watchdog_timeo = 5*HZ;
1205
1206 netxen_nic_change_mtu(netdev, netdev->mtu);
1207
1208 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1209
1210 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1211 netdev->features |= (NETIF_F_GRO);
1212 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1213
1214 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1215 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1216 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1217 }
1218
1219 if (adapter->pci_using_dac) {
1220 netdev->features |= NETIF_F_HIGHDMA;
1221 netdev->vlan_features |= NETIF_F_HIGHDMA;
1222 }
1223
1224 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1225 netdev->features |= (NETIF_F_HW_VLAN_TX);
1226
1227 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1228 netdev->features |= NETIF_F_LRO;
1229
1230 netdev->irq = adapter->msix_entries[0].vector;
1231
1232 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1233
1234 if (netxen_read_mac_addr(adapter))
1235 dev_warn(&pdev->dev, "failed to read mac addr\n");
1236
1237 netif_carrier_off(netdev);
1238
1239 err = register_netdev(netdev);
1240 if (err) {
1241 dev_err(&pdev->dev, "failed to register net device\n");
1242 return err;
1243 }
1244
1245 return 0;
1246 }
1247
1248 #ifdef CONFIG_PCIEAER
1249 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1250 {
1251 struct pci_dev *pdev = adapter->pdev;
1252 struct pci_dev *root = pdev->bus->self;
1253 u32 aer_pos;
1254
1255 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1256 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1257 return;
1258
1259 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1260 return;
1261
1262 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1263 if (!aer_pos)
1264 return;
1265
1266 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1267 }
1268 #endif
1269
1270 static int __devinit
1271 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1272 {
1273 struct net_device *netdev = NULL;
1274 struct netxen_adapter *adapter = NULL;
1275 int i = 0, err;
1276 int pci_func_id = PCI_FUNC(pdev->devfn);
1277 uint8_t revision_id;
1278 u32 val;
1279
1280 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1281 pr_warning("%s: chip revisions between 0x%x-0x%x "
1282 "will not be enabled.\n",
1283 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1284 return -ENODEV;
1285 }
1286
1287 if ((err = pci_enable_device(pdev)))
1288 return err;
1289
1290 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1291 err = -ENODEV;
1292 goto err_out_disable_pdev;
1293 }
1294
1295 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1296 goto err_out_disable_pdev;
1297
1298 if (NX_IS_REVISION_P3(pdev->revision))
1299 pci_enable_pcie_error_reporting(pdev);
1300
1301 pci_set_master(pdev);
1302
1303 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1304 if(!netdev) {
1305 dev_err(&pdev->dev, "failed to allocate net_device\n");
1306 err = -ENOMEM;
1307 goto err_out_free_res;
1308 }
1309
1310 SET_NETDEV_DEV(netdev, &pdev->dev);
1311
1312 adapter = netdev_priv(netdev);
1313 adapter->netdev = netdev;
1314 adapter->pdev = pdev;
1315 adapter->ahw.pci_func = pci_func_id;
1316
1317 revision_id = pdev->revision;
1318 adapter->ahw.revision_id = revision_id;
1319
1320 rwlock_init(&adapter->ahw.crb_lock);
1321 spin_lock_init(&adapter->ahw.mem_lock);
1322
1323 spin_lock_init(&adapter->tx_clean_lock);
1324 INIT_LIST_HEAD(&adapter->mac_list);
1325
1326 err = netxen_setup_pci_map(adapter);
1327 if (err)
1328 goto err_out_free_netdev;
1329
1330 /* This will be reset for mezz cards */
1331 adapter->portnum = pci_func_id;
1332
1333 err = netxen_nic_get_board_info(adapter);
1334 if (err) {
1335 dev_err(&pdev->dev, "Error getting board config info.\n");
1336 goto err_out_iounmap;
1337 }
1338
1339 #ifdef CONFIG_PCIEAER
1340 netxen_mask_aer_correctable(adapter);
1341 #endif
1342
1343 /* Mezz cards have PCI function 0,2,3 enabled */
1344 switch (adapter->ahw.board_type) {
1345 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1346 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1347 if (pci_func_id >= 2)
1348 adapter->portnum = pci_func_id - 2;
1349 break;
1350 default:
1351 break;
1352 }
1353
1354 if (adapter->portnum == 0) {
1355 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1356 if (val != 0xffffffff && val != 0) {
1357 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1358 adapter->need_fw_reset = 1;
1359 }
1360 }
1361
1362 err = netxen_start_firmware(adapter);
1363 if (err)
1364 goto err_out_decr_ref;
1365
1366 /*
1367 * See if the firmware gave us a virtual-physical port mapping.
1368 */
1369 adapter->physical_port = adapter->portnum;
1370 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1371 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1372 if (i != 0x55555555)
1373 adapter->physical_port = i;
1374 }
1375
1376 netxen_nic_clear_stats(adapter);
1377
1378 netxen_setup_intr(adapter);
1379
1380 err = netxen_setup_netdev(adapter, netdev);
1381 if (err)
1382 goto err_out_disable_msi;
1383
1384 pci_set_drvdata(pdev, adapter);
1385
1386 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1387
1388 switch (adapter->ahw.port_type) {
1389 case NETXEN_NIC_GBE:
1390 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1391 adapter->netdev->name);
1392 break;
1393 case NETXEN_NIC_XGBE:
1394 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1395 adapter->netdev->name);
1396 break;
1397 }
1398
1399 netxen_create_diag_entries(adapter);
1400
1401 return 0;
1402
1403 err_out_disable_msi:
1404 netxen_teardown_intr(adapter);
1405
1406 netxen_free_dummy_dma(adapter);
1407
1408 err_out_decr_ref:
1409 nx_decr_dev_ref_cnt(adapter);
1410
1411 err_out_iounmap:
1412 netxen_cleanup_pci_map(adapter);
1413
1414 err_out_free_netdev:
1415 free_netdev(netdev);
1416
1417 err_out_free_res:
1418 pci_release_regions(pdev);
1419
1420 err_out_disable_pdev:
1421 pci_set_drvdata(pdev, NULL);
1422 pci_disable_device(pdev);
1423 return err;
1424 }
1425
1426 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1427 {
1428 struct netxen_adapter *adapter;
1429 struct net_device *netdev;
1430
1431 adapter = pci_get_drvdata(pdev);
1432 if (adapter == NULL)
1433 return;
1434
1435 netdev = adapter->netdev;
1436
1437 netxen_cancel_fw_work(adapter);
1438
1439 unregister_netdev(netdev);
1440
1441 cancel_work_sync(&adapter->tx_timeout_task);
1442
1443 netxen_nic_detach(adapter);
1444
1445 nx_decr_dev_ref_cnt(adapter);
1446
1447 if (adapter->portnum == 0)
1448 netxen_free_dummy_dma(adapter);
1449
1450 clear_bit(__NX_RESETTING, &adapter->state);
1451
1452 netxen_teardown_intr(adapter);
1453
1454 netxen_remove_diag_entries(adapter);
1455
1456 netxen_cleanup_pci_map(adapter);
1457
1458 netxen_release_firmware(adapter);
1459
1460 if (NX_IS_REVISION_P3(pdev->revision))
1461 pci_disable_pcie_error_reporting(pdev);
1462
1463 pci_release_regions(pdev);
1464 pci_disable_device(pdev);
1465 pci_set_drvdata(pdev, NULL);
1466
1467 free_netdev(netdev);
1468 }
1469
1470 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1471 {
1472 struct net_device *netdev = adapter->netdev;
1473
1474 netif_device_detach(netdev);
1475
1476 netxen_cancel_fw_work(adapter);
1477
1478 if (netif_running(netdev))
1479 netxen_nic_down(adapter, netdev);
1480
1481 cancel_work_sync(&adapter->tx_timeout_task);
1482
1483 netxen_nic_detach(adapter);
1484
1485 if (adapter->portnum == 0)
1486 netxen_free_dummy_dma(adapter);
1487
1488 nx_decr_dev_ref_cnt(adapter);
1489
1490 clear_bit(__NX_RESETTING, &adapter->state);
1491 }
1492
1493 static int netxen_nic_attach_func(struct pci_dev *pdev)
1494 {
1495 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1496 struct net_device *netdev = adapter->netdev;
1497 int err;
1498
1499 err = pci_enable_device(pdev);
1500 if (err)
1501 return err;
1502
1503 pci_set_power_state(pdev, PCI_D0);
1504 pci_set_master(pdev);
1505 pci_restore_state(pdev);
1506
1507 adapter->ahw.crb_win = -1;
1508 adapter->ahw.ocm_win = -1;
1509
1510 err = netxen_start_firmware(adapter);
1511 if (err) {
1512 dev_err(&pdev->dev, "failed to start firmware\n");
1513 return err;
1514 }
1515
1516 if (netif_running(netdev)) {
1517 err = netxen_nic_attach(adapter);
1518 if (err)
1519 goto err_out;
1520
1521 err = netxen_nic_up(adapter, netdev);
1522 if (err)
1523 goto err_out_detach;
1524
1525 netxen_config_indev_addr(netdev, NETDEV_UP);
1526 }
1527
1528 netif_device_attach(netdev);
1529 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1530 return 0;
1531
1532 err_out_detach:
1533 netxen_nic_detach(adapter);
1534 err_out:
1535 nx_decr_dev_ref_cnt(adapter);
1536 return err;
1537 }
1538
1539 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1540 pci_channel_state_t state)
1541 {
1542 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1543
1544 if (state == pci_channel_io_perm_failure)
1545 return PCI_ERS_RESULT_DISCONNECT;
1546
1547 if (nx_dev_request_aer(adapter))
1548 return PCI_ERS_RESULT_RECOVERED;
1549
1550 netxen_nic_detach_func(adapter);
1551
1552 pci_disable_device(pdev);
1553
1554 return PCI_ERS_RESULT_NEED_RESET;
1555 }
1556
1557 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1558 {
1559 int err = 0;
1560
1561 err = netxen_nic_attach_func(pdev);
1562
1563 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1564 }
1565
1566 static void netxen_io_resume(struct pci_dev *pdev)
1567 {
1568 pci_cleanup_aer_uncorrect_error_status(pdev);
1569 }
1570
1571 static void netxen_nic_shutdown(struct pci_dev *pdev)
1572 {
1573 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1574
1575 netxen_nic_detach_func(adapter);
1576
1577 if (pci_save_state(pdev))
1578 return;
1579
1580 if (netxen_nic_wol_supported(adapter)) {
1581 pci_enable_wake(pdev, PCI_D3cold, 1);
1582 pci_enable_wake(pdev, PCI_D3hot, 1);
1583 }
1584
1585 pci_disable_device(pdev);
1586 }
1587
1588 #ifdef CONFIG_PM
1589 static int
1590 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1591 {
1592 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1593 int retval;
1594
1595 netxen_nic_detach_func(adapter);
1596
1597 retval = pci_save_state(pdev);
1598 if (retval)
1599 return retval;
1600
1601 if (netxen_nic_wol_supported(adapter)) {
1602 pci_enable_wake(pdev, PCI_D3cold, 1);
1603 pci_enable_wake(pdev, PCI_D3hot, 1);
1604 }
1605
1606 pci_disable_device(pdev);
1607 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1608
1609 return 0;
1610 }
1611
1612 static int
1613 netxen_nic_resume(struct pci_dev *pdev)
1614 {
1615 return netxen_nic_attach_func(pdev);
1616 }
1617 #endif
1618
1619 static int netxen_nic_open(struct net_device *netdev)
1620 {
1621 struct netxen_adapter *adapter = netdev_priv(netdev);
1622 int err = 0;
1623
1624 if (adapter->driver_mismatch)
1625 return -EIO;
1626
1627 err = netxen_nic_attach(adapter);
1628 if (err)
1629 return err;
1630
1631 err = __netxen_nic_up(adapter, netdev);
1632 if (err)
1633 goto err_out;
1634
1635 netif_start_queue(netdev);
1636
1637 return 0;
1638
1639 err_out:
1640 netxen_nic_detach(adapter);
1641 return err;
1642 }
1643
1644 /*
1645 * netxen_nic_close - Disables a network interface entry point
1646 */
1647 static int netxen_nic_close(struct net_device *netdev)
1648 {
1649 struct netxen_adapter *adapter = netdev_priv(netdev);
1650
1651 __netxen_nic_down(adapter, netdev);
1652 return 0;
1653 }
1654
1655 static void
1656 netxen_tso_check(struct net_device *netdev,
1657 struct nx_host_tx_ring *tx_ring,
1658 struct cmd_desc_type0 *first_desc,
1659 struct sk_buff *skb)
1660 {
1661 u8 opcode = TX_ETHER_PKT;
1662 __be16 protocol = skb->protocol;
1663 u16 flags = 0, vid = 0;
1664 u32 producer;
1665 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1666 struct cmd_desc_type0 *hwdesc;
1667 struct vlan_ethhdr *vh;
1668
1669 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1670
1671 vh = (struct vlan_ethhdr *)skb->data;
1672 protocol = vh->h_vlan_encapsulated_proto;
1673 flags = FLAGS_VLAN_TAGGED;
1674
1675 } else if (vlan_tx_tag_present(skb)) {
1676
1677 flags = FLAGS_VLAN_OOB;
1678 vid = vlan_tx_tag_get(skb);
1679 netxen_set_tx_vlan_tci(first_desc, vid);
1680 vlan_oob = 1;
1681 }
1682
1683 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1684 skb_shinfo(skb)->gso_size > 0) {
1685
1686 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1687
1688 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1689 first_desc->total_hdr_length = hdr_len;
1690 if (vlan_oob) {
1691 first_desc->total_hdr_length += VLAN_HLEN;
1692 first_desc->tcp_hdr_offset = VLAN_HLEN;
1693 first_desc->ip_hdr_offset = VLAN_HLEN;
1694 /* Only in case of TSO on vlan device */
1695 flags |= FLAGS_VLAN_TAGGED;
1696 }
1697
1698 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1699 TX_TCP_LSO6 : TX_TCP_LSO;
1700 tso = 1;
1701
1702 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1703 u8 l4proto;
1704
1705 if (protocol == cpu_to_be16(ETH_P_IP)) {
1706 l4proto = ip_hdr(skb)->protocol;
1707
1708 if (l4proto == IPPROTO_TCP)
1709 opcode = TX_TCP_PKT;
1710 else if(l4proto == IPPROTO_UDP)
1711 opcode = TX_UDP_PKT;
1712 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1713 l4proto = ipv6_hdr(skb)->nexthdr;
1714
1715 if (l4proto == IPPROTO_TCP)
1716 opcode = TX_TCPV6_PKT;
1717 else if(l4proto == IPPROTO_UDP)
1718 opcode = TX_UDPV6_PKT;
1719 }
1720 }
1721
1722 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1723 first_desc->ip_hdr_offset += skb_network_offset(skb);
1724 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1725
1726 if (!tso)
1727 return;
1728
1729 /* For LSO, we need to copy the MAC/IP/TCP headers into
1730 * the descriptor ring
1731 */
1732 producer = tx_ring->producer;
1733 copied = 0;
1734 offset = 2;
1735
1736 if (vlan_oob) {
1737 /* Create a TSO vlan header template for firmware */
1738
1739 hwdesc = &tx_ring->desc_head[producer];
1740 tx_ring->cmd_buf_arr[producer].skb = NULL;
1741
1742 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1743 hdr_len + VLAN_HLEN);
1744
1745 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1746 skb_copy_from_linear_data(skb, vh, 12);
1747 vh->h_vlan_proto = htons(ETH_P_8021Q);
1748 vh->h_vlan_TCI = htons(vid);
1749 skb_copy_from_linear_data_offset(skb, 12,
1750 (char *)vh + 16, copy_len - 16);
1751
1752 copied = copy_len - VLAN_HLEN;
1753 offset = 0;
1754
1755 producer = get_next_index(producer, tx_ring->num_desc);
1756 }
1757
1758 while (copied < hdr_len) {
1759
1760 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1761 (hdr_len - copied));
1762
1763 hwdesc = &tx_ring->desc_head[producer];
1764 tx_ring->cmd_buf_arr[producer].skb = NULL;
1765
1766 skb_copy_from_linear_data_offset(skb, copied,
1767 (char *)hwdesc + offset, copy_len);
1768
1769 copied += copy_len;
1770 offset = 0;
1771
1772 producer = get_next_index(producer, tx_ring->num_desc);
1773 }
1774
1775 tx_ring->producer = producer;
1776 barrier();
1777 }
1778
1779 static int
1780 netxen_map_tx_skb(struct pci_dev *pdev,
1781 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1782 {
1783 struct netxen_skb_frag *nf;
1784 struct skb_frag_struct *frag;
1785 int i, nr_frags;
1786 dma_addr_t map;
1787
1788 nr_frags = skb_shinfo(skb)->nr_frags;
1789 nf = &pbuf->frag_array[0];
1790
1791 map = pci_map_single(pdev, skb->data,
1792 skb_headlen(skb), PCI_DMA_TODEVICE);
1793 if (pci_dma_mapping_error(pdev, map))
1794 goto out_err;
1795
1796 nf->dma = map;
1797 nf->length = skb_headlen(skb);
1798
1799 for (i = 0; i < nr_frags; i++) {
1800 frag = &skb_shinfo(skb)->frags[i];
1801 nf = &pbuf->frag_array[i+1];
1802
1803 map = pci_map_page(pdev, frag->page, frag->page_offset,
1804 frag->size, PCI_DMA_TODEVICE);
1805 if (pci_dma_mapping_error(pdev, map))
1806 goto unwind;
1807
1808 nf->dma = map;
1809 nf->length = frag->size;
1810 }
1811
1812 return 0;
1813
1814 unwind:
1815 while (--i >= 0) {
1816 nf = &pbuf->frag_array[i+1];
1817 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1818 }
1819
1820 nf = &pbuf->frag_array[0];
1821 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1822
1823 out_err:
1824 return -ENOMEM;
1825 }
1826
1827 static inline void
1828 netxen_clear_cmddesc(u64 *desc)
1829 {
1830 desc[0] = 0ULL;
1831 desc[2] = 0ULL;
1832 }
1833
1834 static netdev_tx_t
1835 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1836 {
1837 struct netxen_adapter *adapter = netdev_priv(netdev);
1838 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1839 struct netxen_cmd_buffer *pbuf;
1840 struct netxen_skb_frag *buffrag;
1841 struct cmd_desc_type0 *hwdesc, *first_desc;
1842 struct pci_dev *pdev;
1843 int i, k;
1844
1845 u32 producer;
1846 int frag_count, no_of_desc;
1847 u32 num_txd = tx_ring->num_desc;
1848
1849 frag_count = skb_shinfo(skb)->nr_frags + 1;
1850
1851 /* 4 fragments per cmd des */
1852 no_of_desc = (frag_count + 3) >> 2;
1853
1854 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1855 netif_stop_queue(netdev);
1856 smp_mb();
1857 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1858 netif_start_queue(netdev);
1859 else
1860 return NETDEV_TX_BUSY;
1861 }
1862
1863 producer = tx_ring->producer;
1864 pbuf = &tx_ring->cmd_buf_arr[producer];
1865
1866 pdev = adapter->pdev;
1867
1868 if (netxen_map_tx_skb(pdev, skb, pbuf))
1869 goto drop_packet;
1870
1871 pbuf->skb = skb;
1872 pbuf->frag_count = frag_count;
1873
1874 first_desc = hwdesc = &tx_ring->desc_head[producer];
1875 netxen_clear_cmddesc((u64 *)hwdesc);
1876
1877 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1878 netxen_set_tx_port(first_desc, adapter->portnum);
1879
1880 for (i = 0; i < frag_count; i++) {
1881
1882 k = i % 4;
1883
1884 if ((k == 0) && (i > 0)) {
1885 /* move to next desc.*/
1886 producer = get_next_index(producer, num_txd);
1887 hwdesc = &tx_ring->desc_head[producer];
1888 netxen_clear_cmddesc((u64 *)hwdesc);
1889 tx_ring->cmd_buf_arr[producer].skb = NULL;
1890 }
1891
1892 buffrag = &pbuf->frag_array[i];
1893
1894 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1895 switch (k) {
1896 case 0:
1897 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1898 break;
1899 case 1:
1900 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1901 break;
1902 case 2:
1903 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1904 break;
1905 case 3:
1906 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1907 break;
1908 }
1909 }
1910
1911 tx_ring->producer = get_next_index(producer, num_txd);
1912
1913 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1914
1915 netxen_nic_update_cmd_producer(adapter, tx_ring);
1916
1917 adapter->stats.txbytes += skb->len;
1918 adapter->stats.xmitcalled++;
1919
1920 return NETDEV_TX_OK;
1921
1922 drop_packet:
1923 adapter->stats.txdropped++;
1924 dev_kfree_skb_any(skb);
1925 return NETDEV_TX_OK;
1926 }
1927
1928 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1929 {
1930 struct net_device *netdev = adapter->netdev;
1931 uint32_t temp, temp_state, temp_val;
1932 int rv = 0;
1933
1934 temp = NXRD32(adapter, CRB_TEMP_STATE);
1935
1936 temp_state = nx_get_temp_state(temp);
1937 temp_val = nx_get_temp_val(temp);
1938
1939 if (temp_state == NX_TEMP_PANIC) {
1940 printk(KERN_ALERT
1941 "%s: Device temperature %d degrees C exceeds"
1942 " maximum allowed. Hardware has been shut down.\n",
1943 netdev->name, temp_val);
1944 rv = 1;
1945 } else if (temp_state == NX_TEMP_WARN) {
1946 if (adapter->temp == NX_TEMP_NORMAL) {
1947 printk(KERN_ALERT
1948 "%s: Device temperature %d degrees C "
1949 "exceeds operating range."
1950 " Immediate action needed.\n",
1951 netdev->name, temp_val);
1952 }
1953 } else {
1954 if (adapter->temp == NX_TEMP_WARN) {
1955 printk(KERN_INFO
1956 "%s: Device temperature is now %d degrees C"
1957 " in normal range.\n", netdev->name,
1958 temp_val);
1959 }
1960 }
1961 adapter->temp = temp_state;
1962 return rv;
1963 }
1964
1965 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1966 {
1967 struct net_device *netdev = adapter->netdev;
1968
1969 if (adapter->ahw.linkup && !linkup) {
1970 printk(KERN_INFO "%s: %s NIC Link is down\n",
1971 netxen_nic_driver_name, netdev->name);
1972 adapter->ahw.linkup = 0;
1973 if (netif_running(netdev)) {
1974 netif_carrier_off(netdev);
1975 netif_stop_queue(netdev);
1976 }
1977 adapter->link_changed = !adapter->has_link_events;
1978 } else if (!adapter->ahw.linkup && linkup) {
1979 printk(KERN_INFO "%s: %s NIC Link is up\n",
1980 netxen_nic_driver_name, netdev->name);
1981 adapter->ahw.linkup = 1;
1982 if (netif_running(netdev)) {
1983 netif_carrier_on(netdev);
1984 netif_wake_queue(netdev);
1985 }
1986 adapter->link_changed = !adapter->has_link_events;
1987 }
1988 }
1989
1990 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1991 {
1992 u32 val, port, linkup;
1993
1994 port = adapter->physical_port;
1995
1996 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1997 val = NXRD32(adapter, CRB_XG_STATE_P3);
1998 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1999 linkup = (val == XG_LINK_UP_P3);
2000 } else {
2001 val = NXRD32(adapter, CRB_XG_STATE);
2002 val = (val >> port*8) & 0xff;
2003 linkup = (val == XG_LINK_UP);
2004 }
2005
2006 netxen_advert_link_change(adapter, linkup);
2007 }
2008
2009 static void netxen_tx_timeout(struct net_device *netdev)
2010 {
2011 struct netxen_adapter *adapter = netdev_priv(netdev);
2012
2013 if (test_bit(__NX_RESETTING, &adapter->state))
2014 return;
2015
2016 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2017 schedule_work(&adapter->tx_timeout_task);
2018 }
2019
2020 static void netxen_tx_timeout_task(struct work_struct *work)
2021 {
2022 struct netxen_adapter *adapter =
2023 container_of(work, struct netxen_adapter, tx_timeout_task);
2024
2025 if (!netif_running(adapter->netdev))
2026 return;
2027
2028 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2029 return;
2030
2031 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2032 goto request_reset;
2033
2034 rtnl_lock();
2035 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2036 /* try to scrub interrupt */
2037 netxen_napi_disable(adapter);
2038
2039 netxen_napi_enable(adapter);
2040
2041 netif_wake_queue(adapter->netdev);
2042
2043 clear_bit(__NX_RESETTING, &adapter->state);
2044 } else {
2045 clear_bit(__NX_RESETTING, &adapter->state);
2046 if (netxen_nic_reset_context(adapter)) {
2047 rtnl_unlock();
2048 goto request_reset;
2049 }
2050 }
2051 adapter->netdev->trans_start = jiffies;
2052 rtnl_unlock();
2053 return;
2054
2055 request_reset:
2056 adapter->need_fw_reset = 1;
2057 clear_bit(__NX_RESETTING, &adapter->state);
2058 }
2059
2060 static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
2061 {
2062 struct netxen_adapter *adapter = netdev_priv(netdev);
2063 struct net_device_stats *stats = &netdev->stats;
2064
2065 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2066 stats->tx_packets = adapter->stats.xmitfinished;
2067 stats->rx_bytes = adapter->stats.rxbytes;
2068 stats->tx_bytes = adapter->stats.txbytes;
2069 stats->rx_dropped = adapter->stats.rxdropped;
2070 stats->tx_dropped = adapter->stats.txdropped;
2071
2072 return stats;
2073 }
2074
2075 static irqreturn_t netxen_intr(int irq, void *data)
2076 {
2077 struct nx_host_sds_ring *sds_ring = data;
2078 struct netxen_adapter *adapter = sds_ring->adapter;
2079 u32 status = 0;
2080
2081 status = readl(adapter->isr_int_vec);
2082
2083 if (!(status & adapter->int_vec_bit))
2084 return IRQ_NONE;
2085
2086 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2087 /* check interrupt state machine, to be sure */
2088 status = readl(adapter->crb_int_state_reg);
2089 if (!ISR_LEGACY_INT_TRIGGERED(status))
2090 return IRQ_NONE;
2091
2092 } else {
2093 unsigned long our_int = 0;
2094
2095 our_int = readl(adapter->crb_int_state_reg);
2096
2097 /* not our interrupt */
2098 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2099 return IRQ_NONE;
2100
2101 /* claim interrupt */
2102 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2103
2104 /* clear interrupt */
2105 netxen_nic_disable_int(sds_ring);
2106 }
2107
2108 writel(0xffffffff, adapter->tgt_status_reg);
2109 /* read twice to ensure write is flushed */
2110 readl(adapter->isr_int_vec);
2111 readl(adapter->isr_int_vec);
2112
2113 napi_schedule(&sds_ring->napi);
2114
2115 return IRQ_HANDLED;
2116 }
2117
2118 static irqreturn_t netxen_msi_intr(int irq, void *data)
2119 {
2120 struct nx_host_sds_ring *sds_ring = data;
2121 struct netxen_adapter *adapter = sds_ring->adapter;
2122
2123 /* clear interrupt */
2124 writel(0xffffffff, adapter->tgt_status_reg);
2125
2126 napi_schedule(&sds_ring->napi);
2127 return IRQ_HANDLED;
2128 }
2129
2130 static irqreturn_t netxen_msix_intr(int irq, void *data)
2131 {
2132 struct nx_host_sds_ring *sds_ring = data;
2133
2134 napi_schedule(&sds_ring->napi);
2135 return IRQ_HANDLED;
2136 }
2137
2138 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2139 {
2140 struct nx_host_sds_ring *sds_ring =
2141 container_of(napi, struct nx_host_sds_ring, napi);
2142
2143 struct netxen_adapter *adapter = sds_ring->adapter;
2144
2145 int tx_complete;
2146 int work_done;
2147
2148 tx_complete = netxen_process_cmd_ring(adapter);
2149
2150 work_done = netxen_process_rcv_ring(sds_ring, budget);
2151
2152 if ((work_done < budget) && tx_complete) {
2153 napi_complete(&sds_ring->napi);
2154 if (test_bit(__NX_DEV_UP, &adapter->state))
2155 netxen_nic_enable_int(sds_ring);
2156 }
2157
2158 return work_done;
2159 }
2160
2161 #ifdef CONFIG_NET_POLL_CONTROLLER
2162 static void netxen_nic_poll_controller(struct net_device *netdev)
2163 {
2164 int ring;
2165 struct nx_host_sds_ring *sds_ring;
2166 struct netxen_adapter *adapter = netdev_priv(netdev);
2167 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2168
2169 disable_irq(adapter->irq);
2170 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2171 sds_ring = &recv_ctx->sds_rings[ring];
2172 netxen_intr(adapter->irq, sds_ring);
2173 }
2174 enable_irq(adapter->irq);
2175 }
2176 #endif
2177
2178 static int
2179 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2180 {
2181 int count;
2182 if (netxen_api_lock(adapter))
2183 return -EIO;
2184
2185 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2186
2187 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2188
2189 netxen_api_unlock(adapter);
2190 return count;
2191 }
2192
2193 static int
2194 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2195 {
2196 int count;
2197 if (netxen_api_lock(adapter))
2198 return -EIO;
2199
2200 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2201 WARN_ON(count == 0);
2202
2203 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2204
2205 if (count == 0)
2206 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2207
2208 netxen_api_unlock(adapter);
2209 return count;
2210 }
2211
2212 static int
2213 nx_dev_request_aer(struct netxen_adapter *adapter)
2214 {
2215 u32 state;
2216 int ret = -EINVAL;
2217
2218 if (netxen_api_lock(adapter))
2219 return ret;
2220
2221 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2222
2223 if (state == NX_DEV_NEED_AER)
2224 ret = 0;
2225 else if (state == NX_DEV_READY) {
2226 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2227 ret = 0;
2228 }
2229
2230 netxen_api_unlock(adapter);
2231 return ret;
2232 }
2233
2234 static int
2235 nx_dev_request_reset(struct netxen_adapter *adapter)
2236 {
2237 u32 state;
2238 int ret = -EINVAL;
2239
2240 if (netxen_api_lock(adapter))
2241 return ret;
2242
2243 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2244
2245 if (state == NX_DEV_NEED_RESET)
2246 ret = 0;
2247 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2248 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2249 ret = 0;
2250 }
2251
2252 netxen_api_unlock(adapter);
2253
2254 return ret;
2255 }
2256
2257 static int
2258 netxen_can_start_firmware(struct netxen_adapter *adapter)
2259 {
2260 int count;
2261 int can_start = 0;
2262
2263 if (netxen_api_lock(adapter))
2264 return 0;
2265
2266 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2267
2268 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2269 count = 0;
2270
2271 if (count == 0) {
2272 can_start = 1;
2273 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2274 }
2275
2276 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2277
2278 netxen_api_unlock(adapter);
2279
2280 return can_start;
2281 }
2282
2283 static void
2284 netxen_schedule_work(struct netxen_adapter *adapter,
2285 work_func_t func, int delay)
2286 {
2287 INIT_DELAYED_WORK(&adapter->fw_work, func);
2288 schedule_delayed_work(&adapter->fw_work, delay);
2289 }
2290
2291 static void
2292 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2293 {
2294 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2295 msleep(10);
2296
2297 cancel_delayed_work_sync(&adapter->fw_work);
2298 }
2299
2300 static void
2301 netxen_attach_work(struct work_struct *work)
2302 {
2303 struct netxen_adapter *adapter = container_of(work,
2304 struct netxen_adapter, fw_work.work);
2305 struct net_device *netdev = adapter->netdev;
2306 int err = 0;
2307
2308 if (netif_running(netdev)) {
2309 err = netxen_nic_attach(adapter);
2310 if (err)
2311 goto done;
2312
2313 err = netxen_nic_up(adapter, netdev);
2314 if (err) {
2315 netxen_nic_detach(adapter);
2316 goto done;
2317 }
2318
2319 netxen_config_indev_addr(netdev, NETDEV_UP);
2320 }
2321
2322 netif_device_attach(netdev);
2323
2324 done:
2325 adapter->fw_fail_cnt = 0;
2326 clear_bit(__NX_RESETTING, &adapter->state);
2327 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2328 }
2329
2330 static void
2331 netxen_fwinit_work(struct work_struct *work)
2332 {
2333 struct netxen_adapter *adapter = container_of(work,
2334 struct netxen_adapter, fw_work.work);
2335 int dev_state;
2336
2337 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2338
2339 switch (dev_state) {
2340 case NX_DEV_COLD:
2341 case NX_DEV_READY:
2342 if (!netxen_start_firmware(adapter)) {
2343 netxen_schedule_work(adapter, netxen_attach_work, 0);
2344 return;
2345 }
2346 break;
2347
2348 case NX_DEV_NEED_RESET:
2349 case NX_DEV_INITALIZING:
2350 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2351 netxen_schedule_work(adapter,
2352 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2353 return;
2354 }
2355
2356 case NX_DEV_FAILED:
2357 default:
2358 nx_incr_dev_ref_cnt(adapter);
2359 break;
2360 }
2361
2362 clear_bit(__NX_RESETTING, &adapter->state);
2363 }
2364
2365 static void
2366 netxen_detach_work(struct work_struct *work)
2367 {
2368 struct netxen_adapter *adapter = container_of(work,
2369 struct netxen_adapter, fw_work.work);
2370 struct net_device *netdev = adapter->netdev;
2371 int ref_cnt, delay;
2372 u32 status;
2373
2374 netif_device_detach(netdev);
2375
2376 netxen_nic_down(adapter, netdev);
2377
2378 rtnl_lock();
2379 netxen_nic_detach(adapter);
2380 rtnl_unlock();
2381
2382 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2383
2384 if (status & NX_RCODE_FATAL_ERROR)
2385 goto err_ret;
2386
2387 if (adapter->temp == NX_TEMP_PANIC)
2388 goto err_ret;
2389
2390 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2391
2392 if (ref_cnt == -EIO)
2393 goto err_ret;
2394
2395 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2396
2397 adapter->fw_wait_cnt = 0;
2398 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2399
2400 return;
2401
2402 err_ret:
2403 clear_bit(__NX_RESETTING, &adapter->state);
2404 }
2405
2406 static int
2407 netxen_check_health(struct netxen_adapter *adapter)
2408 {
2409 u32 state, heartbit;
2410 struct net_device *netdev = adapter->netdev;
2411
2412 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2413 if (state == NX_DEV_NEED_AER)
2414 return 0;
2415
2416 if (netxen_nic_check_temp(adapter))
2417 goto detach;
2418
2419 if (adapter->need_fw_reset) {
2420 if (nx_dev_request_reset(adapter))
2421 return 0;
2422 goto detach;
2423 }
2424
2425 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2426 * 1. Tx timeout 2. Fw hang
2427 * Send request to destroy context in case of tx timeout only
2428 * and doesn't required in case of Fw hang
2429 */
2430 if (state == NX_DEV_NEED_RESET) {
2431 adapter->need_fw_reset = 1;
2432 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2433 goto detach;
2434 }
2435
2436 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2437 return 0;
2438
2439 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2440 if (heartbit != adapter->heartbit) {
2441 adapter->heartbit = heartbit;
2442 adapter->fw_fail_cnt = 0;
2443 if (adapter->need_fw_reset)
2444 goto detach;
2445 return 0;
2446 }
2447
2448 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2449 return 0;
2450
2451 if (nx_dev_request_reset(adapter))
2452 return 0;
2453
2454 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2455
2456 dev_info(&netdev->dev, "firmware hang detected\n");
2457
2458 detach:
2459 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2460 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2461 netxen_schedule_work(adapter, netxen_detach_work, 0);
2462 return 1;
2463 }
2464
2465 static void
2466 netxen_fw_poll_work(struct work_struct *work)
2467 {
2468 struct netxen_adapter *adapter = container_of(work,
2469 struct netxen_adapter, fw_work.work);
2470
2471 if (test_bit(__NX_RESETTING, &adapter->state))
2472 goto reschedule;
2473
2474 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2475 if (!adapter->has_link_events) {
2476
2477 netxen_nic_handle_phy_intr(adapter);
2478
2479 if (adapter->link_changed)
2480 netxen_nic_set_link_parameters(adapter);
2481 }
2482 }
2483
2484 if (netxen_check_health(adapter))
2485 return;
2486
2487 reschedule:
2488 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2489 }
2490
2491 static ssize_t
2492 netxen_store_bridged_mode(struct device *dev,
2493 struct device_attribute *attr, const char *buf, size_t len)
2494 {
2495 struct net_device *net = to_net_dev(dev);
2496 struct netxen_adapter *adapter = netdev_priv(net);
2497 unsigned long new;
2498 int ret = -EINVAL;
2499
2500 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2501 goto err_out;
2502
2503 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2504 goto err_out;
2505
2506 if (strict_strtoul(buf, 2, &new))
2507 goto err_out;
2508
2509 if (!netxen_config_bridged_mode(adapter, !!new))
2510 ret = len;
2511
2512 err_out:
2513 return ret;
2514 }
2515
2516 static ssize_t
2517 netxen_show_bridged_mode(struct device *dev,
2518 struct device_attribute *attr, char *buf)
2519 {
2520 struct net_device *net = to_net_dev(dev);
2521 struct netxen_adapter *adapter;
2522 int bridged_mode = 0;
2523
2524 adapter = netdev_priv(net);
2525
2526 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2527 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2528
2529 return sprintf(buf, "%d\n", bridged_mode);
2530 }
2531
2532 static struct device_attribute dev_attr_bridged_mode = {
2533 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2534 .show = netxen_show_bridged_mode,
2535 .store = netxen_store_bridged_mode,
2536 };
2537
2538 static ssize_t
2539 netxen_store_diag_mode(struct device *dev,
2540 struct device_attribute *attr, const char *buf, size_t len)
2541 {
2542 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2543 unsigned long new;
2544
2545 if (strict_strtoul(buf, 2, &new))
2546 return -EINVAL;
2547
2548 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2549 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2550
2551 return len;
2552 }
2553
2554 static ssize_t
2555 netxen_show_diag_mode(struct device *dev,
2556 struct device_attribute *attr, char *buf)
2557 {
2558 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2559
2560 return sprintf(buf, "%d\n",
2561 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2562 }
2563
2564 static struct device_attribute dev_attr_diag_mode = {
2565 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2566 .show = netxen_show_diag_mode,
2567 .store = netxen_store_diag_mode,
2568 };
2569
2570 static int
2571 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2572 loff_t offset, size_t size)
2573 {
2574 size_t crb_size = 4;
2575
2576 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2577 return -EIO;
2578
2579 if (offset < NETXEN_PCI_CRBSPACE) {
2580 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2581 return -EINVAL;
2582
2583 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2584 NETXEN_PCI_CAMQM_2M_END))
2585 crb_size = 8;
2586 else
2587 return -EINVAL;
2588 }
2589
2590 if ((size != crb_size) || (offset & (crb_size-1)))
2591 return -EINVAL;
2592
2593 return 0;
2594 }
2595
2596 static ssize_t
2597 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2598 struct bin_attribute *attr,
2599 char *buf, loff_t offset, size_t size)
2600 {
2601 struct device *dev = container_of(kobj, struct device, kobj);
2602 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2603 u32 data;
2604 u64 qmdata;
2605 int ret;
2606
2607 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2608 if (ret != 0)
2609 return ret;
2610
2611 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2612 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2613 NETXEN_PCI_CAMQM_2M_END)) {
2614 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2615 memcpy(buf, &qmdata, size);
2616 } else {
2617 data = NXRD32(adapter, offset);
2618 memcpy(buf, &data, size);
2619 }
2620
2621 return size;
2622 }
2623
2624 static ssize_t
2625 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2626 struct bin_attribute *attr,
2627 char *buf, loff_t offset, size_t size)
2628 {
2629 struct device *dev = container_of(kobj, struct device, kobj);
2630 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2631 u32 data;
2632 u64 qmdata;
2633 int ret;
2634
2635 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2636 if (ret != 0)
2637 return ret;
2638
2639 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2640 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2641 NETXEN_PCI_CAMQM_2M_END)) {
2642 memcpy(&qmdata, buf, size);
2643 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2644 } else {
2645 memcpy(&data, buf, size);
2646 NXWR32(adapter, offset, data);
2647 }
2648
2649 return size;
2650 }
2651
2652 static int
2653 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2654 loff_t offset, size_t size)
2655 {
2656 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2657 return -EIO;
2658
2659 if ((size != 8) || (offset & 0x7))
2660 return -EIO;
2661
2662 return 0;
2663 }
2664
2665 static ssize_t
2666 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2667 struct bin_attribute *attr,
2668 char *buf, loff_t offset, size_t size)
2669 {
2670 struct device *dev = container_of(kobj, struct device, kobj);
2671 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2672 u64 data;
2673 int ret;
2674
2675 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2676 if (ret != 0)
2677 return ret;
2678
2679 if (adapter->pci_mem_read(adapter, offset, &data))
2680 return -EIO;
2681
2682 memcpy(buf, &data, size);
2683
2684 return size;
2685 }
2686
2687 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2688 struct bin_attribute *attr, char *buf,
2689 loff_t offset, size_t size)
2690 {
2691 struct device *dev = container_of(kobj, struct device, kobj);
2692 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2693 u64 data;
2694 int ret;
2695
2696 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2697 if (ret != 0)
2698 return ret;
2699
2700 memcpy(&data, buf, size);
2701
2702 if (adapter->pci_mem_write(adapter, offset, data))
2703 return -EIO;
2704
2705 return size;
2706 }
2707
2708
2709 static struct bin_attribute bin_attr_crb = {
2710 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2711 .size = 0,
2712 .read = netxen_sysfs_read_crb,
2713 .write = netxen_sysfs_write_crb,
2714 };
2715
2716 static struct bin_attribute bin_attr_mem = {
2717 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2718 .size = 0,
2719 .read = netxen_sysfs_read_mem,
2720 .write = netxen_sysfs_write_mem,
2721 };
2722
2723
2724 static void
2725 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2726 {
2727 struct net_device *netdev = adapter->netdev;
2728 struct device *dev = &netdev->dev;
2729
2730 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2731 /* bridged_mode control */
2732 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2733 dev_warn(&netdev->dev,
2734 "failed to create bridged_mode sysfs entry\n");
2735 }
2736 }
2737 }
2738
2739 static void
2740 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2741 {
2742 struct net_device *netdev = adapter->netdev;
2743 struct device *dev = &netdev->dev;
2744
2745 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2746 device_remove_file(dev, &dev_attr_bridged_mode);
2747 }
2748
2749 static void
2750 netxen_create_diag_entries(struct netxen_adapter *adapter)
2751 {
2752 struct pci_dev *pdev = adapter->pdev;
2753 struct device *dev;
2754
2755 dev = &pdev->dev;
2756 if (device_create_file(dev, &dev_attr_diag_mode))
2757 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2758 if (device_create_bin_file(dev, &bin_attr_crb))
2759 dev_info(dev, "failed to create crb sysfs entry\n");
2760 if (device_create_bin_file(dev, &bin_attr_mem))
2761 dev_info(dev, "failed to create mem sysfs entry\n");
2762 }
2763
2764
2765 static void
2766 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2767 {
2768 struct pci_dev *pdev = adapter->pdev;
2769 struct device *dev = &pdev->dev;
2770
2771 device_remove_file(dev, &dev_attr_diag_mode);
2772 device_remove_bin_file(dev, &bin_attr_crb);
2773 device_remove_bin_file(dev, &bin_attr_mem);
2774 }
2775
2776 #ifdef CONFIG_INET
2777
2778 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2779
2780 static int
2781 netxen_destip_supported(struct netxen_adapter *adapter)
2782 {
2783 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2784 return 0;
2785
2786 if (adapter->ahw.cut_through)
2787 return 0;
2788
2789 return 1;
2790 }
2791
2792 static void
2793 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2794 {
2795 struct in_device *indev;
2796 struct netxen_adapter *adapter = netdev_priv(dev);
2797
2798 if (!netxen_destip_supported(adapter))
2799 return;
2800
2801 indev = in_dev_get(dev);
2802 if (!indev)
2803 return;
2804
2805 for_ifa(indev) {
2806 switch (event) {
2807 case NETDEV_UP:
2808 netxen_config_ipaddr(adapter,
2809 ifa->ifa_address, NX_IP_UP);
2810 break;
2811 case NETDEV_DOWN:
2812 netxen_config_ipaddr(adapter,
2813 ifa->ifa_address, NX_IP_DOWN);
2814 break;
2815 default:
2816 break;
2817 }
2818 } endfor_ifa(indev);
2819
2820 in_dev_put(indev);
2821 }
2822
2823 static int netxen_netdev_event(struct notifier_block *this,
2824 unsigned long event, void *ptr)
2825 {
2826 struct netxen_adapter *adapter;
2827 struct net_device *dev = (struct net_device *)ptr;
2828
2829 recheck:
2830 if (dev == NULL)
2831 goto done;
2832
2833 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2834 dev = vlan_dev_real_dev(dev);
2835 goto recheck;
2836 }
2837
2838 if (!is_netxen_netdev(dev))
2839 goto done;
2840
2841 adapter = netdev_priv(dev);
2842
2843 if (!adapter)
2844 goto done;
2845
2846 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2847 goto done;
2848
2849 netxen_config_indev_addr(dev, event);
2850 done:
2851 return NOTIFY_DONE;
2852 }
2853
2854 static int
2855 netxen_inetaddr_event(struct notifier_block *this,
2856 unsigned long event, void *ptr)
2857 {
2858 struct netxen_adapter *adapter;
2859 struct net_device *dev;
2860
2861 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2862
2863 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2864
2865 recheck:
2866 if (dev == NULL || !netif_running(dev))
2867 goto done;
2868
2869 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2870 dev = vlan_dev_real_dev(dev);
2871 goto recheck;
2872 }
2873
2874 if (!is_netxen_netdev(dev))
2875 goto done;
2876
2877 adapter = netdev_priv(dev);
2878
2879 if (!adapter || !netxen_destip_supported(adapter))
2880 goto done;
2881
2882 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2883 goto done;
2884
2885 switch (event) {
2886 case NETDEV_UP:
2887 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2888 break;
2889 case NETDEV_DOWN:
2890 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2891 break;
2892 default:
2893 break;
2894 }
2895
2896 done:
2897 return NOTIFY_DONE;
2898 }
2899
2900 static struct notifier_block netxen_netdev_cb = {
2901 .notifier_call = netxen_netdev_event,
2902 };
2903
2904 static struct notifier_block netxen_inetaddr_cb = {
2905 .notifier_call = netxen_inetaddr_event,
2906 };
2907 #else
2908 static void
2909 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2910 { }
2911 #endif
2912
2913 static struct pci_error_handlers netxen_err_handler = {
2914 .error_detected = netxen_io_error_detected,
2915 .slot_reset = netxen_io_slot_reset,
2916 .resume = netxen_io_resume,
2917 };
2918
2919 static struct pci_driver netxen_driver = {
2920 .name = netxen_nic_driver_name,
2921 .id_table = netxen_pci_tbl,
2922 .probe = netxen_nic_probe,
2923 .remove = __devexit_p(netxen_nic_remove),
2924 #ifdef CONFIG_PM
2925 .suspend = netxen_nic_suspend,
2926 .resume = netxen_nic_resume,
2927 #endif
2928 .shutdown = netxen_nic_shutdown,
2929 .err_handler = &netxen_err_handler
2930 };
2931
2932 static int __init netxen_init_module(void)
2933 {
2934 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2935
2936 #ifdef CONFIG_INET
2937 register_netdevice_notifier(&netxen_netdev_cb);
2938 register_inetaddr_notifier(&netxen_inetaddr_cb);
2939 #endif
2940 return pci_register_driver(&netxen_driver);
2941 }
2942
2943 module_init(netxen_init_module);
2944
2945 static void __exit netxen_exit_module(void)
2946 {
2947 pci_unregister_driver(&netxen_driver);
2948
2949 #ifdef CONFIG_INET
2950 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2951 unregister_netdevice_notifier(&netxen_netdev_cb);
2952 #endif
2953 }
2954
2955 module_exit(netxen_exit_module);
linux-next