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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / net / ethernet / qlogic / netxen / netxen_nic_main.c
blobde18e4753b64880c2fb6e56441f8ae94ecb54275
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_free_vlan_ip_list(struct netxen_adapter *);
95 static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
96 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *dev,
97 struct rtnl_link_stats64 *stats);
98 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
99
100 /* PCI Device ID Table */
101 #define ENTRY(device) \
102 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
103 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
104
105 static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
106 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
107 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
108 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
109 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
110 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
111 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
112 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
113 ENTRY(PCI_DEVICE_ID_NX3031),
114 {0,}
115 };
116
117 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
118
119 static uint32_t crb_cmd_producer[4] = {
120 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
121 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
122 };
123
124 void
125 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
126 struct nx_host_tx_ring *tx_ring)
127 {
128 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
129 }
130
131 static uint32_t crb_cmd_consumer[4] = {
132 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
133 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
134 };
135
136 static inline void
137 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
138 struct nx_host_tx_ring *tx_ring)
139 {
140 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
141 }
142
143 static uint32_t msi_tgt_status[8] = {
144 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
145 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
146 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
147 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
148 };
149
150 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
151
152 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
153 {
154 struct netxen_adapter *adapter = sds_ring->adapter;
155
156 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
157 }
158
159 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
160 {
161 struct netxen_adapter *adapter = sds_ring->adapter;
162
163 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
164
165 if (!NETXEN_IS_MSI_FAMILY(adapter))
166 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
167 }
168
169 static int
170 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
171 {
172 int size = sizeof(struct nx_host_sds_ring) * count;
173
174 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
175
176 return recv_ctx->sds_rings == NULL;
177 }
178
179 static void
180 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
181 {
182 if (recv_ctx->sds_rings != NULL)
183 kfree(recv_ctx->sds_rings);
184
185 recv_ctx->sds_rings = NULL;
186 }
187
188 static int
189 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
190 {
191 int ring;
192 struct nx_host_sds_ring *sds_ring;
193 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
194
195 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
196 return -ENOMEM;
197
198 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
199 sds_ring = &recv_ctx->sds_rings[ring];
200 netif_napi_add(netdev, &sds_ring->napi,
201 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
202 }
203
204 return 0;
205 }
206
207 static void
208 netxen_napi_del(struct netxen_adapter *adapter)
209 {
210 int ring;
211 struct nx_host_sds_ring *sds_ring;
212 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
213
214 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
215 sds_ring = &recv_ctx->sds_rings[ring];
216 netif_napi_del(&sds_ring->napi);
217 }
218
219 netxen_free_sds_rings(&adapter->recv_ctx);
220 }
221
222 static void
223 netxen_napi_enable(struct netxen_adapter *adapter)
224 {
225 int ring;
226 struct nx_host_sds_ring *sds_ring;
227 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
228
229 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
230 sds_ring = &recv_ctx->sds_rings[ring];
231 napi_enable(&sds_ring->napi);
232 netxen_nic_enable_int(sds_ring);
233 }
234 }
235
236 static void
237 netxen_napi_disable(struct netxen_adapter *adapter)
238 {
239 int ring;
240 struct nx_host_sds_ring *sds_ring;
241 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
242
243 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
244 sds_ring = &recv_ctx->sds_rings[ring];
245 netxen_nic_disable_int(sds_ring);
246 napi_synchronize(&sds_ring->napi);
247 napi_disable(&sds_ring->napi);
248 }
249 }
250
251 static int nx_set_dma_mask(struct netxen_adapter *adapter)
252 {
253 struct pci_dev *pdev = adapter->pdev;
254 uint64_t mask, cmask;
255
256 adapter->pci_using_dac = 0;
257
258 mask = DMA_BIT_MASK(32);
259 cmask = DMA_BIT_MASK(32);
260
261 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
262 #ifndef CONFIG_IA64
263 mask = DMA_BIT_MASK(35);
264 #endif
265 } else {
266 mask = DMA_BIT_MASK(39);
267 cmask = mask;
268 }
269
270 if (pci_set_dma_mask(pdev, mask) == 0 &&
271 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
272 adapter->pci_using_dac = 1;
273 return 0;
274 }
275
276 return -EIO;
277 }
278
279 /* Update addressable range if firmware supports it */
280 static int
281 nx_update_dma_mask(struct netxen_adapter *adapter)
282 {
283 int change, shift, err;
284 uint64_t mask, old_mask, old_cmask;
285 struct pci_dev *pdev = adapter->pdev;
286
287 change = 0;
288
289 shift = NXRD32(adapter, CRB_DMA_SHIFT);
290 if (shift > 32)
291 return 0;
292
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
294 change = 1;
295 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
296 change = 1;
297
298 if (change) {
299 old_mask = pdev->dma_mask;
300 old_cmask = pdev->dev.coherent_dma_mask;
301
302 mask = DMA_BIT_MASK(32+shift);
303
304 err = pci_set_dma_mask(pdev, mask);
305 if (err)
306 goto err_out;
307
308 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
309
310 err = pci_set_consistent_dma_mask(pdev, mask);
311 if (err)
312 goto err_out;
313 }
314 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
315 }
316
317 return 0;
318
319 err_out:
320 pci_set_dma_mask(pdev, old_mask);
321 pci_set_consistent_dma_mask(pdev, old_cmask);
322 return err;
323 }
324
325 static int
326 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
327 {
328 u32 val, timeout;
329
330 if (first_boot == 0x55555555) {
331 /* This is the first boot after power up */
332 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
333
334 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
335 return 0;
336
337 /* PCI bus master workaround */
338 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
339 if (!(first_boot & 0x4)) {
340 first_boot |= 0x4;
341 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
342 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
343 }
344
345 /* This is the first boot after power up */
346 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
347 if (first_boot != 0x80000f) {
348 /* clear the register for future unloads/loads */
349 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
350 return -EIO;
351 }
352
353 /* Start P2 boot loader */
354 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
355 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
356 timeout = 0;
357 do {
358 msleep(1);
359 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
360
361 if (++timeout > 5000)
362 return -EIO;
363
364 } while (val == NETXEN_BDINFO_MAGIC);
365 }
366 return 0;
367 }
368
369 static void netxen_set_port_mode(struct netxen_adapter *adapter)
370 {
371 u32 val, data;
372
373 val = adapter->ahw.board_type;
374 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
375 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
376 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
377 data = NETXEN_PORT_MODE_802_3_AP;
378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
379 } else if (port_mode == NETXEN_PORT_MODE_XG) {
380 data = NETXEN_PORT_MODE_XG;
381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
382 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
383 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
384 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
385 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
386 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
387 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
388 } else {
389 data = NETXEN_PORT_MODE_AUTO_NEG;
390 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
391 }
392
393 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
394 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
395 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
396 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
397 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
398 }
399 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
400 }
401 }
402
403 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
404 {
405 u32 control;
406 int pos;
407
408 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
409 if (pos) {
410 pci_read_config_dword(pdev, pos, &control);
411 if (enable)
412 control |= PCI_MSIX_FLAGS_ENABLE;
413 else
414 control = 0;
415 pci_write_config_dword(pdev, pos, control);
416 }
417 }
418
419 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
420 {
421 int i;
422
423 for (i = 0; i < count; i++)
424 adapter->msix_entries[i].entry = i;
425 }
426
427 static int
428 netxen_read_mac_addr(struct netxen_adapter *adapter)
429 {
430 int i;
431 unsigned char *p;
432 u64 mac_addr;
433 struct net_device *netdev = adapter->netdev;
434 struct pci_dev *pdev = adapter->pdev;
435
436 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
437 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
438 return -EIO;
439 } else {
440 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
441 return -EIO;
442 }
443
444 p = (unsigned char *)&mac_addr;
445 for (i = 0; i < 6; i++)
446 netdev->dev_addr[i] = *(p + 5 - i);
447
448 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
449 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
450
451 /* set station address */
452
453 if (!is_valid_ether_addr(netdev->perm_addr))
454 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
455
456 return 0;
457 }
458
459 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
460 {
461 struct netxen_adapter *adapter = netdev_priv(netdev);
462 struct sockaddr *addr = p;
463
464 if (!is_valid_ether_addr(addr->sa_data))
465 return -EINVAL;
466
467 if (netif_running(netdev)) {
468 netif_device_detach(netdev);
469 netxen_napi_disable(adapter);
470 }
471
472 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
473 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
474 adapter->macaddr_set(adapter, addr->sa_data);
475
476 if (netif_running(netdev)) {
477 netif_device_attach(netdev);
478 netxen_napi_enable(adapter);
479 }
480 return 0;
481 }
482
483 static void netxen_set_multicast_list(struct net_device *dev)
484 {
485 struct netxen_adapter *adapter = netdev_priv(dev);
486
487 adapter->set_multi(dev);
488 }
489
490 static u32 netxen_fix_features(struct net_device *dev, u32 features)
491 {
492 if (!(features & NETIF_F_RXCSUM)) {
493 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
494
495 features &= ~NETIF_F_LRO;
496 }
497
498 return features;
499 }
500
501 static int netxen_set_features(struct net_device *dev, u32 features)
502 {
503 struct netxen_adapter *adapter = netdev_priv(dev);
504 int hw_lro;
505
506 if (!((dev->features ^ features) & NETIF_F_LRO))
507 return 0;
508
509 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
510 : NETXEN_NIC_LRO_DISABLED;
511
512 if (netxen_config_hw_lro(adapter, hw_lro))
513 return -EIO;
514
515 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
516 return -EIO;
517
518 return 0;
519 }
520
521 static const struct net_device_ops netxen_netdev_ops = {
522 .ndo_open = netxen_nic_open,
523 .ndo_stop = netxen_nic_close,
524 .ndo_start_xmit = netxen_nic_xmit_frame,
525 .ndo_get_stats64 = netxen_nic_get_stats,
526 .ndo_validate_addr = eth_validate_addr,
527 .ndo_set_rx_mode = netxen_set_multicast_list,
528 .ndo_set_mac_address = netxen_nic_set_mac,
529 .ndo_change_mtu = netxen_nic_change_mtu,
530 .ndo_tx_timeout = netxen_tx_timeout,
531 .ndo_fix_features = netxen_fix_features,
532 .ndo_set_features = netxen_set_features,
533 #ifdef CONFIG_NET_POLL_CONTROLLER
534 .ndo_poll_controller = netxen_nic_poll_controller,
535 #endif
536 };
537
538 static void
539 netxen_setup_intr(struct netxen_adapter *adapter)
540 {
541 struct netxen_legacy_intr_set *legacy_intrp;
542 struct pci_dev *pdev = adapter->pdev;
543 int err, num_msix;
544
545 if (adapter->rss_supported) {
546 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
547 MSIX_ENTRIES_PER_ADAPTER : 2;
548 } else
549 num_msix = 1;
550
551 adapter->max_sds_rings = 1;
552
553 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
554
555 if (adapter->ahw.revision_id >= NX_P3_B0)
556 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
557 else
558 legacy_intrp = &legacy_intr[0];
559
560 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
561 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
562 legacy_intrp->tgt_status_reg);
563 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
564 legacy_intrp->tgt_mask_reg);
565 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
566 legacy_intrp->pci_int_reg);
567 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
568
569 if (adapter->ahw.revision_id >= NX_P3_B1)
570 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
571 ISR_INT_STATE_REG);
572 else
573 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
574 CRB_INT_VECTOR);
575
576 netxen_set_msix_bit(pdev, 0);
577
578 if (adapter->msix_supported) {
579
580 netxen_init_msix_entries(adapter, num_msix);
581 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
582 if (err == 0) {
583 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
584 netxen_set_msix_bit(pdev, 1);
585
586 if (adapter->rss_supported)
587 adapter->max_sds_rings = num_msix;
588
589 dev_info(&pdev->dev, "using msi-x interrupts\n");
590 return;
591 }
592
593 if (err > 0)
594 pci_disable_msix(pdev);
595
596 /* fall through for msi */
597 }
598
599 if (use_msi && !pci_enable_msi(pdev)) {
600 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
601 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
602 msi_tgt_status[adapter->ahw.pci_func]);
603 dev_info(&pdev->dev, "using msi interrupts\n");
604 adapter->msix_entries[0].vector = pdev->irq;
605 return;
606 }
607
608 dev_info(&pdev->dev, "using legacy interrupts\n");
609 adapter->msix_entries[0].vector = pdev->irq;
610 }
611
612 static void
613 netxen_teardown_intr(struct netxen_adapter *adapter)
614 {
615 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
616 pci_disable_msix(adapter->pdev);
617 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
618 pci_disable_msi(adapter->pdev);
619 }
620
621 static void
622 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
623 {
624 if (adapter->ahw.db_base != NULL)
625 iounmap(adapter->ahw.db_base);
626 if (adapter->ahw.pci_base0 != NULL)
627 iounmap(adapter->ahw.pci_base0);
628 if (adapter->ahw.pci_base1 != NULL)
629 iounmap(adapter->ahw.pci_base1);
630 if (adapter->ahw.pci_base2 != NULL)
631 iounmap(adapter->ahw.pci_base2);
632 }
633
634 static int
635 netxen_setup_pci_map(struct netxen_adapter *adapter)
636 {
637 void __iomem *db_ptr = NULL;
638
639 resource_size_t mem_base, db_base;
640 unsigned long mem_len, db_len = 0;
641
642 struct pci_dev *pdev = adapter->pdev;
643 int pci_func = adapter->ahw.pci_func;
644 struct netxen_hardware_context *ahw = &adapter->ahw;
645
646 int err = 0;
647
648 /*
649 * Set the CRB window to invalid. If any register in window 0 is
650 * accessed it should set the window to 0 and then reset it to 1.
651 */
652 adapter->ahw.crb_win = -1;
653 adapter->ahw.ocm_win = -1;
654
655 /* remap phys address */
656 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
657 mem_len = pci_resource_len(pdev, 0);
658
659 /* 128 Meg of memory */
660 if (mem_len == NETXEN_PCI_128MB_SIZE) {
661
662 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
663 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
664 SECOND_PAGE_GROUP_SIZE);
665 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
666 THIRD_PAGE_GROUP_SIZE);
667 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
668 ahw->pci_base2 == NULL) {
669 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
670 err = -EIO;
671 goto err_out;
672 }
673
674 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
675
676 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
677
678 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
679 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
680 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
681 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
682 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
683 err = -EIO;
684 goto err_out;
685 }
686
687 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
688
689 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
690 if (ahw->pci_base0 == NULL) {
691 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
692 return -EIO;
693 }
694 ahw->pci_len0 = mem_len;
695 } else {
696 return -EIO;
697 }
698
699 netxen_setup_hwops(adapter);
700
701 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
702
703 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
704 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
705 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
706
707 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
708 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
709 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
710 }
711
712 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
713 goto skip_doorbell;
714
715 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
716 db_len = pci_resource_len(pdev, 4);
717
718 if (db_len == 0) {
719 printk(KERN_ERR "%s: doorbell is disabled\n",
720 netxen_nic_driver_name);
721 err = -EIO;
722 goto err_out;
723 }
724
725 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
726 if (!db_ptr) {
727 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
728 netxen_nic_driver_name);
729 err = -EIO;
730 goto err_out;
731 }
732
733 skip_doorbell:
734 adapter->ahw.db_base = db_ptr;
735 adapter->ahw.db_len = db_len;
736 return 0;
737
738 err_out:
739 netxen_cleanup_pci_map(adapter);
740 return err;
741 }
742
743 static void
744 netxen_check_options(struct netxen_adapter *adapter)
745 {
746 u32 fw_major, fw_minor, fw_build;
747 char brd_name[NETXEN_MAX_SHORT_NAME];
748 char serial_num[32];
749 int i, offset, val;
750 int *ptr32;
751 struct pci_dev *pdev = adapter->pdev;
752
753 adapter->driver_mismatch = 0;
754
755 ptr32 = (int *)&serial_num;
756 offset = NX_FW_SERIAL_NUM_OFFSET;
757 for (i = 0; i < 8; i++) {
758 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
759 dev_err(&pdev->dev, "error reading board info\n");
760 adapter->driver_mismatch = 1;
761 return;
762 }
763 ptr32[i] = cpu_to_le32(val);
764 offset += sizeof(u32);
765 }
766
767 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
768 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
769 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
770
771 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
772
773 if (adapter->portnum == 0) {
774 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
775
776 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
777 module_name(THIS_MODULE),
778 brd_name, serial_num, adapter->ahw.revision_id);
779 }
780
781 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
782 adapter->driver_mismatch = 1;
783 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
784 fw_major, fw_minor, fw_build);
785 return;
786 }
787
788 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
789 i = NXRD32(adapter, NETXEN_SRE_MISC);
790 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
791 }
792
793 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
794 fw_major, fw_minor, fw_build,
795 adapter->ahw.cut_through ? "cut-through" : "legacy");
796
797 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
798 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
799
800 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
801 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
802 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
803 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
804 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
805 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
806 }
807
808 adapter->msix_supported = 0;
809 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
810 adapter->msix_supported = !!use_msi_x;
811 adapter->rss_supported = !!use_msi_x;
812 } else {
813 u32 flashed_ver = 0;
814 netxen_rom_fast_read(adapter,
815 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
816 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
817
818 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
819 switch (adapter->ahw.board_type) {
820 case NETXEN_BRDTYPE_P2_SB31_10G:
821 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
822 adapter->msix_supported = !!use_msi_x;
823 adapter->rss_supported = !!use_msi_x;
824 break;
825 default:
826 break;
827 }
828 }
829 }
830
831 adapter->num_txd = MAX_CMD_DESCRIPTORS;
832
833 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
834 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
835 adapter->max_rds_rings = 3;
836 } else {
837 adapter->num_lro_rxd = 0;
838 adapter->max_rds_rings = 2;
839 }
840 }
841
842 static int
843 netxen_start_firmware(struct netxen_adapter *adapter)
844 {
845 int val, err, first_boot;
846 struct pci_dev *pdev = adapter->pdev;
847
848 /* required for NX2031 dummy dma */
849 err = nx_set_dma_mask(adapter);
850 if (err)
851 return err;
852
853 if (!netxen_can_start_firmware(adapter))
854 goto wait_init;
855
856 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
857
858 err = netxen_check_hw_init(adapter, first_boot);
859 if (err) {
860 dev_err(&pdev->dev, "error in init HW init sequence\n");
861 return err;
862 }
863
864 netxen_request_firmware(adapter);
865
866 err = netxen_need_fw_reset(adapter);
867 if (err < 0)
868 goto err_out;
869 if (err == 0)
870 goto wait_init;
871
872 if (first_boot != 0x55555555) {
873 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
874 netxen_pinit_from_rom(adapter);
875 msleep(1);
876 }
877
878 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
879 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
880 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
881
882 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
883 netxen_set_port_mode(adapter);
884
885 err = netxen_load_firmware(adapter);
886 if (err)
887 goto err_out;
888
889 netxen_release_firmware(adapter);
890
891 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
892
893 /* Initialize multicast addr pool owners */
894 val = 0x7654;
895 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
896 val |= 0x0f000000;
897 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
898
899 }
900
901 err = netxen_init_dummy_dma(adapter);
902 if (err)
903 goto err_out;
904
905 /*
906 * Tell the hardware our version number.
907 */
908 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
909 | ((_NETXEN_NIC_LINUX_MINOR << 8))
910 | (_NETXEN_NIC_LINUX_SUBVERSION);
911 NXWR32(adapter, CRB_DRIVER_VERSION, val);
912
913 wait_init:
914 /* Handshake with the card before we register the devices. */
915 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
916 if (err) {
917 netxen_free_dummy_dma(adapter);
918 goto err_out;
919 }
920
921 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
922
923 nx_update_dma_mask(adapter);
924
925 netxen_check_options(adapter);
926
927 adapter->need_fw_reset = 0;
928
929 /* fall through and release firmware */
930
931 err_out:
932 netxen_release_firmware(adapter);
933 return err;
934 }
935
936 static int
937 netxen_nic_request_irq(struct netxen_adapter *adapter)
938 {
939 irq_handler_t handler;
940 struct nx_host_sds_ring *sds_ring;
941 int err, ring;
942
943 unsigned long flags = 0;
944 struct net_device *netdev = adapter->netdev;
945 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
946
947 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
948 handler = netxen_msix_intr;
949 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
950 handler = netxen_msi_intr;
951 else {
952 flags |= IRQF_SHARED;
953 handler = netxen_intr;
954 }
955 adapter->irq = netdev->irq;
956
957 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
958 sds_ring = &recv_ctx->sds_rings[ring];
959 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
960 err = request_irq(sds_ring->irq, handler,
961 flags, sds_ring->name, sds_ring);
962 if (err)
963 return err;
964 }
965
966 return 0;
967 }
968
969 static void
970 netxen_nic_free_irq(struct netxen_adapter *adapter)
971 {
972 int ring;
973 struct nx_host_sds_ring *sds_ring;
974
975 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
976
977 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
978 sds_ring = &recv_ctx->sds_rings[ring];
979 free_irq(sds_ring->irq, sds_ring);
980 }
981 }
982
983 static void
984 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
985 {
986 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
987 adapter->coal.normal.data.rx_time_us =
988 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
989 adapter->coal.normal.data.rx_packets =
990 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
991 adapter->coal.normal.data.tx_time_us =
992 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
993 adapter->coal.normal.data.tx_packets =
994 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
995 }
996
997 /* with rtnl_lock */
998 static int
999 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1000 {
1001 int err;
1002
1003 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1004 return -EIO;
1005
1006 err = adapter->init_port(adapter, adapter->physical_port);
1007 if (err) {
1008 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1009 netxen_nic_driver_name, adapter->portnum);
1010 return err;
1011 }
1012 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1013 adapter->macaddr_set(adapter, adapter->mac_addr);
1014
1015 adapter->set_multi(netdev);
1016 adapter->set_mtu(adapter, netdev->mtu);
1017
1018 adapter->ahw.linkup = 0;
1019
1020 if (adapter->max_sds_rings > 1)
1021 netxen_config_rss(adapter, 1);
1022
1023 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1024 netxen_config_intr_coalesce(adapter);
1025
1026 if (netdev->features & NETIF_F_LRO)
1027 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1028
1029 netxen_napi_enable(adapter);
1030
1031 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1032 netxen_linkevent_request(adapter, 1);
1033 else
1034 netxen_nic_set_link_parameters(adapter);
1035
1036 set_bit(__NX_DEV_UP, &adapter->state);
1037 return 0;
1038 }
1039
1040 /* Usage: During resume and firmware recovery module.*/
1041
1042 static inline int
1043 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1044 {
1045 int err = 0;
1046
1047 rtnl_lock();
1048 if (netif_running(netdev))
1049 err = __netxen_nic_up(adapter, netdev);
1050 rtnl_unlock();
1051
1052 return err;
1053 }
1054
1055 /* with rtnl_lock */
1056 static void
1057 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1058 {
1059 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1060 return;
1061
1062 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1063 return;
1064
1065 smp_mb();
1066 spin_lock(&adapter->tx_clean_lock);
1067 netif_carrier_off(netdev);
1068 netif_tx_disable(netdev);
1069
1070 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1071 netxen_linkevent_request(adapter, 0);
1072
1073 if (adapter->stop_port)
1074 adapter->stop_port(adapter);
1075
1076 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1077 netxen_p3_free_mac_list(adapter);
1078
1079 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1080
1081 netxen_napi_disable(adapter);
1082
1083 netxen_release_tx_buffers(adapter);
1084 spin_unlock(&adapter->tx_clean_lock);
1085 }
1086
1087 /* Usage: During suspend and firmware recovery module */
1088
1089 static inline void
1090 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1091 {
1092 rtnl_lock();
1093 if (netif_running(netdev))
1094 __netxen_nic_down(adapter, netdev);
1095 rtnl_unlock();
1096
1097 }
1098
1099 static int
1100 netxen_nic_attach(struct netxen_adapter *adapter)
1101 {
1102 struct net_device *netdev = adapter->netdev;
1103 struct pci_dev *pdev = adapter->pdev;
1104 int err, ring;
1105 struct nx_host_rds_ring *rds_ring;
1106 struct nx_host_tx_ring *tx_ring;
1107
1108 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1109 return 0;
1110
1111 err = netxen_init_firmware(adapter);
1112 if (err)
1113 return err;
1114
1115 err = netxen_napi_add(adapter, netdev);
1116 if (err)
1117 return err;
1118
1119 err = netxen_alloc_sw_resources(adapter);
1120 if (err) {
1121 printk(KERN_ERR "%s: Error in setting sw resources\n",
1122 netdev->name);
1123 return err;
1124 }
1125
1126 err = netxen_alloc_hw_resources(adapter);
1127 if (err) {
1128 printk(KERN_ERR "%s: Error in setting hw resources\n",
1129 netdev->name);
1130 goto err_out_free_sw;
1131 }
1132
1133 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1134 tx_ring = adapter->tx_ring;
1135 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1136 crb_cmd_producer[adapter->portnum]);
1137 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1138 crb_cmd_consumer[adapter->portnum]);
1139
1140 tx_ring->producer = 0;
1141 tx_ring->sw_consumer = 0;
1142
1143 netxen_nic_update_cmd_producer(adapter, tx_ring);
1144 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1145 }
1146
1147 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1148 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1149 netxen_post_rx_buffers(adapter, ring, rds_ring);
1150 }
1151
1152 err = netxen_nic_request_irq(adapter);
1153 if (err) {
1154 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1155 netdev->name);
1156 goto err_out_free_rxbuf;
1157 }
1158
1159 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1160 netxen_nic_init_coalesce_defaults(adapter);
1161
1162 netxen_create_sysfs_entries(adapter);
1163
1164 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1165 return 0;
1166
1167 err_out_free_rxbuf:
1168 netxen_release_rx_buffers(adapter);
1169 netxen_free_hw_resources(adapter);
1170 err_out_free_sw:
1171 netxen_free_sw_resources(adapter);
1172 return err;
1173 }
1174
1175 static void
1176 netxen_nic_detach(struct netxen_adapter *adapter)
1177 {
1178 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1179 return;
1180
1181 netxen_remove_sysfs_entries(adapter);
1182
1183 netxen_free_hw_resources(adapter);
1184 netxen_release_rx_buffers(adapter);
1185 netxen_nic_free_irq(adapter);
1186 netxen_napi_del(adapter);
1187 netxen_free_sw_resources(adapter);
1188
1189 adapter->is_up = 0;
1190 }
1191
1192 int
1193 netxen_nic_reset_context(struct netxen_adapter *adapter)
1194 {
1195 int err = 0;
1196 struct net_device *netdev = adapter->netdev;
1197
1198 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1199 return -EBUSY;
1200
1201 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1202
1203 netif_device_detach(netdev);
1204
1205 if (netif_running(netdev))
1206 __netxen_nic_down(adapter, netdev);
1207
1208 netxen_nic_detach(adapter);
1209
1210 if (netif_running(netdev)) {
1211 err = netxen_nic_attach(adapter);
1212 if (!err)
1213 err = __netxen_nic_up(adapter, netdev);
1214
1215 if (err)
1216 goto done;
1217 }
1218
1219 netif_device_attach(netdev);
1220 }
1221
1222 done:
1223 clear_bit(__NX_RESETTING, &adapter->state);
1224 return err;
1225 }
1226
1227 static int
1228 netxen_setup_netdev(struct netxen_adapter *adapter,
1229 struct net_device *netdev)
1230 {
1231 int err = 0;
1232 struct pci_dev *pdev = adapter->pdev;
1233
1234 adapter->mc_enabled = 0;
1235 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1236 adapter->max_mc_count = 38;
1237 else
1238 adapter->max_mc_count = 16;
1239
1240 netdev->netdev_ops = &netxen_netdev_ops;
1241 netdev->watchdog_timeo = 5*HZ;
1242
1243 netxen_nic_change_mtu(netdev, netdev->mtu);
1244
1245 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1246
1247 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1248 NETIF_F_RXCSUM;
1249
1250 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1251 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1252
1253 netdev->vlan_features |= netdev->hw_features;
1254
1255 if (adapter->pci_using_dac) {
1256 netdev->features |= NETIF_F_HIGHDMA;
1257 netdev->vlan_features |= NETIF_F_HIGHDMA;
1258 }
1259
1260 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1261 netdev->hw_features |= NETIF_F_HW_VLAN_TX;
1262
1263 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1264 netdev->hw_features |= NETIF_F_LRO;
1265
1266 netdev->features |= netdev->hw_features;
1267
1268 netdev->irq = adapter->msix_entries[0].vector;
1269
1270 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1271
1272 if (netxen_read_mac_addr(adapter))
1273 dev_warn(&pdev->dev, "failed to read mac addr\n");
1274
1275 netif_carrier_off(netdev);
1276
1277 err = register_netdev(netdev);
1278 if (err) {
1279 dev_err(&pdev->dev, "failed to register net device\n");
1280 return err;
1281 }
1282
1283 return 0;
1284 }
1285
1286 #ifdef CONFIG_PCIEAER
1287 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1288 {
1289 struct pci_dev *pdev = adapter->pdev;
1290 struct pci_dev *root = pdev->bus->self;
1291 u32 aer_pos;
1292
1293 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1294 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1295 return;
1296
1297 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1298 return;
1299
1300 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1301 if (!aer_pos)
1302 return;
1303
1304 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1305 }
1306 #endif
1307
1308 static int __devinit
1309 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1310 {
1311 struct net_device *netdev = NULL;
1312 struct netxen_adapter *adapter = NULL;
1313 int i = 0, err;
1314 int pci_func_id = PCI_FUNC(pdev->devfn);
1315 uint8_t revision_id;
1316 u32 val;
1317
1318 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1319 pr_warning("%s: chip revisions between 0x%x-0x%x "
1320 "will not be enabled.\n",
1321 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1322 return -ENODEV;
1323 }
1324
1325 if ((err = pci_enable_device(pdev)))
1326 return err;
1327
1328 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1329 err = -ENODEV;
1330 goto err_out_disable_pdev;
1331 }
1332
1333 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1334 goto err_out_disable_pdev;
1335
1336 if (NX_IS_REVISION_P3(pdev->revision))
1337 pci_enable_pcie_error_reporting(pdev);
1338
1339 pci_set_master(pdev);
1340
1341 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1342 if(!netdev) {
1343 dev_err(&pdev->dev, "failed to allocate net_device\n");
1344 err = -ENOMEM;
1345 goto err_out_free_res;
1346 }
1347
1348 SET_NETDEV_DEV(netdev, &pdev->dev);
1349
1350 adapter = netdev_priv(netdev);
1351 adapter->netdev = netdev;
1352 adapter->pdev = pdev;
1353 adapter->ahw.pci_func = pci_func_id;
1354
1355 revision_id = pdev->revision;
1356 adapter->ahw.revision_id = revision_id;
1357
1358 rwlock_init(&adapter->ahw.crb_lock);
1359 spin_lock_init(&adapter->ahw.mem_lock);
1360
1361 spin_lock_init(&adapter->tx_clean_lock);
1362 INIT_LIST_HEAD(&adapter->mac_list);
1363 INIT_LIST_HEAD(&adapter->vlan_ip_list);
1364
1365 err = netxen_setup_pci_map(adapter);
1366 if (err)
1367 goto err_out_free_netdev;
1368
1369 /* This will be reset for mezz cards */
1370 adapter->portnum = pci_func_id;
1371
1372 err = netxen_nic_get_board_info(adapter);
1373 if (err) {
1374 dev_err(&pdev->dev, "Error getting board config info.\n");
1375 goto err_out_iounmap;
1376 }
1377
1378 #ifdef CONFIG_PCIEAER
1379 netxen_mask_aer_correctable(adapter);
1380 #endif
1381
1382 /* Mezz cards have PCI function 0,2,3 enabled */
1383 switch (adapter->ahw.board_type) {
1384 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1385 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1386 if (pci_func_id >= 2)
1387 adapter->portnum = pci_func_id - 2;
1388 break;
1389 default:
1390 break;
1391 }
1392
1393 err = netxen_check_flash_fw_compatibility(adapter);
1394 if (err)
1395 goto err_out_iounmap;
1396
1397 if (adapter->portnum == 0) {
1398 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1399 if (val != 0xffffffff && val != 0) {
1400 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1401 adapter->need_fw_reset = 1;
1402 }
1403 }
1404
1405 err = netxen_start_firmware(adapter);
1406 if (err)
1407 goto err_out_decr_ref;
1408
1409 /*
1410 * See if the firmware gave us a virtual-physical port mapping.
1411 */
1412 adapter->physical_port = adapter->portnum;
1413 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1414 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1415 if (i != 0x55555555)
1416 adapter->physical_port = i;
1417 }
1418
1419 netxen_nic_clear_stats(adapter);
1420
1421 netxen_setup_intr(adapter);
1422
1423 err = netxen_setup_netdev(adapter, netdev);
1424 if (err)
1425 goto err_out_disable_msi;
1426
1427 pci_set_drvdata(pdev, adapter);
1428
1429 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1430
1431 switch (adapter->ahw.port_type) {
1432 case NETXEN_NIC_GBE:
1433 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1434 adapter->netdev->name);
1435 break;
1436 case NETXEN_NIC_XGBE:
1437 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1438 adapter->netdev->name);
1439 break;
1440 }
1441
1442 netxen_create_diag_entries(adapter);
1443
1444 return 0;
1445
1446 err_out_disable_msi:
1447 netxen_teardown_intr(adapter);
1448
1449 netxen_free_dummy_dma(adapter);
1450
1451 err_out_decr_ref:
1452 nx_decr_dev_ref_cnt(adapter);
1453
1454 err_out_iounmap:
1455 netxen_cleanup_pci_map(adapter);
1456
1457 err_out_free_netdev:
1458 free_netdev(netdev);
1459
1460 err_out_free_res:
1461 pci_release_regions(pdev);
1462
1463 err_out_disable_pdev:
1464 pci_set_drvdata(pdev, NULL);
1465 pci_disable_device(pdev);
1466 return err;
1467 }
1468
1469 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1470 {
1471 struct netxen_adapter *adapter;
1472 struct net_device *netdev;
1473
1474 adapter = pci_get_drvdata(pdev);
1475 if (adapter == NULL)
1476 return;
1477
1478 netdev = adapter->netdev;
1479
1480 netxen_cancel_fw_work(adapter);
1481
1482 unregister_netdev(netdev);
1483
1484 cancel_work_sync(&adapter->tx_timeout_task);
1485
1486 netxen_free_vlan_ip_list(adapter);
1487 netxen_nic_detach(adapter);
1488
1489 nx_decr_dev_ref_cnt(adapter);
1490
1491 if (adapter->portnum == 0)
1492 netxen_free_dummy_dma(adapter);
1493
1494 clear_bit(__NX_RESETTING, &adapter->state);
1495
1496 netxen_teardown_intr(adapter);
1497
1498 netxen_remove_diag_entries(adapter);
1499
1500 netxen_cleanup_pci_map(adapter);
1501
1502 netxen_release_firmware(adapter);
1503
1504 if (NX_IS_REVISION_P3(pdev->revision))
1505 pci_disable_pcie_error_reporting(pdev);
1506
1507 pci_release_regions(pdev);
1508 pci_disable_device(pdev);
1509 pci_set_drvdata(pdev, NULL);
1510
1511 free_netdev(netdev);
1512 }
1513
1514 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1515 {
1516 struct net_device *netdev = adapter->netdev;
1517
1518 netif_device_detach(netdev);
1519
1520 netxen_cancel_fw_work(adapter);
1521
1522 if (netif_running(netdev))
1523 netxen_nic_down(adapter, netdev);
1524
1525 cancel_work_sync(&adapter->tx_timeout_task);
1526
1527 netxen_nic_detach(adapter);
1528
1529 if (adapter->portnum == 0)
1530 netxen_free_dummy_dma(adapter);
1531
1532 nx_decr_dev_ref_cnt(adapter);
1533
1534 clear_bit(__NX_RESETTING, &adapter->state);
1535 }
1536
1537 static int netxen_nic_attach_func(struct pci_dev *pdev)
1538 {
1539 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1540 struct net_device *netdev = adapter->netdev;
1541 int err;
1542
1543 err = pci_enable_device(pdev);
1544 if (err)
1545 return err;
1546
1547 pci_set_power_state(pdev, PCI_D0);
1548 pci_set_master(pdev);
1549 pci_restore_state(pdev);
1550
1551 adapter->ahw.crb_win = -1;
1552 adapter->ahw.ocm_win = -1;
1553
1554 err = netxen_start_firmware(adapter);
1555 if (err) {
1556 dev_err(&pdev->dev, "failed to start firmware\n");
1557 return err;
1558 }
1559
1560 if (netif_running(netdev)) {
1561 err = netxen_nic_attach(adapter);
1562 if (err)
1563 goto err_out;
1564
1565 err = netxen_nic_up(adapter, netdev);
1566 if (err)
1567 goto err_out_detach;
1568
1569 netxen_restore_indev_addr(netdev, NETDEV_UP);
1570 }
1571
1572 netif_device_attach(netdev);
1573 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1574 return 0;
1575
1576 err_out_detach:
1577 netxen_nic_detach(adapter);
1578 err_out:
1579 nx_decr_dev_ref_cnt(adapter);
1580 return err;
1581 }
1582
1583 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1584 pci_channel_state_t state)
1585 {
1586 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1587
1588 if (state == pci_channel_io_perm_failure)
1589 return PCI_ERS_RESULT_DISCONNECT;
1590
1591 if (nx_dev_request_aer(adapter))
1592 return PCI_ERS_RESULT_RECOVERED;
1593
1594 netxen_nic_detach_func(adapter);
1595
1596 pci_disable_device(pdev);
1597
1598 return PCI_ERS_RESULT_NEED_RESET;
1599 }
1600
1601 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1602 {
1603 int err = 0;
1604
1605 err = netxen_nic_attach_func(pdev);
1606
1607 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1608 }
1609
1610 static void netxen_io_resume(struct pci_dev *pdev)
1611 {
1612 pci_cleanup_aer_uncorrect_error_status(pdev);
1613 }
1614
1615 static void netxen_nic_shutdown(struct pci_dev *pdev)
1616 {
1617 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1618
1619 netxen_nic_detach_func(adapter);
1620
1621 if (pci_save_state(pdev))
1622 return;
1623
1624 if (netxen_nic_wol_supported(adapter)) {
1625 pci_enable_wake(pdev, PCI_D3cold, 1);
1626 pci_enable_wake(pdev, PCI_D3hot, 1);
1627 }
1628
1629 pci_disable_device(pdev);
1630 }
1631
1632 #ifdef CONFIG_PM
1633 static int
1634 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1635 {
1636 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1637 int retval;
1638
1639 netxen_nic_detach_func(adapter);
1640
1641 retval = pci_save_state(pdev);
1642 if (retval)
1643 return retval;
1644
1645 if (netxen_nic_wol_supported(adapter)) {
1646 pci_enable_wake(pdev, PCI_D3cold, 1);
1647 pci_enable_wake(pdev, PCI_D3hot, 1);
1648 }
1649
1650 pci_disable_device(pdev);
1651 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1652
1653 return 0;
1654 }
1655
1656 static int
1657 netxen_nic_resume(struct pci_dev *pdev)
1658 {
1659 return netxen_nic_attach_func(pdev);
1660 }
1661 #endif
1662
1663 static int netxen_nic_open(struct net_device *netdev)
1664 {
1665 struct netxen_adapter *adapter = netdev_priv(netdev);
1666 int err = 0;
1667
1668 if (adapter->driver_mismatch)
1669 return -EIO;
1670
1671 err = netxen_nic_attach(adapter);
1672 if (err)
1673 return err;
1674
1675 err = __netxen_nic_up(adapter, netdev);
1676 if (err)
1677 goto err_out;
1678
1679 netif_start_queue(netdev);
1680
1681 return 0;
1682
1683 err_out:
1684 netxen_nic_detach(adapter);
1685 return err;
1686 }
1687
1688 /*
1689 * netxen_nic_close - Disables a network interface entry point
1690 */
1691 static int netxen_nic_close(struct net_device *netdev)
1692 {
1693 struct netxen_adapter *adapter = netdev_priv(netdev);
1694
1695 __netxen_nic_down(adapter, netdev);
1696 return 0;
1697 }
1698
1699 static void
1700 netxen_tso_check(struct net_device *netdev,
1701 struct nx_host_tx_ring *tx_ring,
1702 struct cmd_desc_type0 *first_desc,
1703 struct sk_buff *skb)
1704 {
1705 u8 opcode = TX_ETHER_PKT;
1706 __be16 protocol = skb->protocol;
1707 u16 flags = 0, vid = 0;
1708 u32 producer;
1709 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1710 struct cmd_desc_type0 *hwdesc;
1711 struct vlan_ethhdr *vh;
1712
1713 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1714
1715 vh = (struct vlan_ethhdr *)skb->data;
1716 protocol = vh->h_vlan_encapsulated_proto;
1717 flags = FLAGS_VLAN_TAGGED;
1718
1719 } else if (vlan_tx_tag_present(skb)) {
1720
1721 flags = FLAGS_VLAN_OOB;
1722 vid = vlan_tx_tag_get(skb);
1723 netxen_set_tx_vlan_tci(first_desc, vid);
1724 vlan_oob = 1;
1725 }
1726
1727 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1728 skb_shinfo(skb)->gso_size > 0) {
1729
1730 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1731
1732 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1733 first_desc->total_hdr_length = hdr_len;
1734 if (vlan_oob) {
1735 first_desc->total_hdr_length += VLAN_HLEN;
1736 first_desc->tcp_hdr_offset = VLAN_HLEN;
1737 first_desc->ip_hdr_offset = VLAN_HLEN;
1738 /* Only in case of TSO on vlan device */
1739 flags |= FLAGS_VLAN_TAGGED;
1740 }
1741
1742 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1743 TX_TCP_LSO6 : TX_TCP_LSO;
1744 tso = 1;
1745
1746 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1747 u8 l4proto;
1748
1749 if (protocol == cpu_to_be16(ETH_P_IP)) {
1750 l4proto = ip_hdr(skb)->protocol;
1751
1752 if (l4proto == IPPROTO_TCP)
1753 opcode = TX_TCP_PKT;
1754 else if(l4proto == IPPROTO_UDP)
1755 opcode = TX_UDP_PKT;
1756 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1757 l4proto = ipv6_hdr(skb)->nexthdr;
1758
1759 if (l4proto == IPPROTO_TCP)
1760 opcode = TX_TCPV6_PKT;
1761 else if(l4proto == IPPROTO_UDP)
1762 opcode = TX_UDPV6_PKT;
1763 }
1764 }
1765
1766 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1767 first_desc->ip_hdr_offset += skb_network_offset(skb);
1768 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1769
1770 if (!tso)
1771 return;
1772
1773 /* For LSO, we need to copy the MAC/IP/TCP headers into
1774 * the descriptor ring
1775 */
1776 producer = tx_ring->producer;
1777 copied = 0;
1778 offset = 2;
1779
1780 if (vlan_oob) {
1781 /* Create a TSO vlan header template for firmware */
1782
1783 hwdesc = &tx_ring->desc_head[producer];
1784 tx_ring->cmd_buf_arr[producer].skb = NULL;
1785
1786 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1787 hdr_len + VLAN_HLEN);
1788
1789 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1790 skb_copy_from_linear_data(skb, vh, 12);
1791 vh->h_vlan_proto = htons(ETH_P_8021Q);
1792 vh->h_vlan_TCI = htons(vid);
1793 skb_copy_from_linear_data_offset(skb, 12,
1794 (char *)vh + 16, copy_len - 16);
1795
1796 copied = copy_len - VLAN_HLEN;
1797 offset = 0;
1798
1799 producer = get_next_index(producer, tx_ring->num_desc);
1800 }
1801
1802 while (copied < hdr_len) {
1803
1804 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1805 (hdr_len - copied));
1806
1807 hwdesc = &tx_ring->desc_head[producer];
1808 tx_ring->cmd_buf_arr[producer].skb = NULL;
1809
1810 skb_copy_from_linear_data_offset(skb, copied,
1811 (char *)hwdesc + offset, copy_len);
1812
1813 copied += copy_len;
1814 offset = 0;
1815
1816 producer = get_next_index(producer, tx_ring->num_desc);
1817 }
1818
1819 tx_ring->producer = producer;
1820 barrier();
1821 }
1822
1823 static int
1824 netxen_map_tx_skb(struct pci_dev *pdev,
1825 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1826 {
1827 struct netxen_skb_frag *nf;
1828 struct skb_frag_struct *frag;
1829 int i, nr_frags;
1830 dma_addr_t map;
1831
1832 nr_frags = skb_shinfo(skb)->nr_frags;
1833 nf = &pbuf->frag_array[0];
1834
1835 map = pci_map_single(pdev, skb->data,
1836 skb_headlen(skb), PCI_DMA_TODEVICE);
1837 if (pci_dma_mapping_error(pdev, map))
1838 goto out_err;
1839
1840 nf->dma = map;
1841 nf->length = skb_headlen(skb);
1842
1843 for (i = 0; i < nr_frags; i++) {
1844 frag = &skb_shinfo(skb)->frags[i];
1845 nf = &pbuf->frag_array[i+1];
1846
1847 map = pci_map_page(pdev, frag->page, frag->page_offset,
1848 frag->size, PCI_DMA_TODEVICE);
1849 if (pci_dma_mapping_error(pdev, map))
1850 goto unwind;
1851
1852 nf->dma = map;
1853 nf->length = frag->size;
1854 }
1855
1856 return 0;
1857
1858 unwind:
1859 while (--i >= 0) {
1860 nf = &pbuf->frag_array[i+1];
1861 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1862 }
1863
1864 nf = &pbuf->frag_array[0];
1865 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1866
1867 out_err:
1868 return -ENOMEM;
1869 }
1870
1871 static inline void
1872 netxen_clear_cmddesc(u64 *desc)
1873 {
1874 desc[0] = 0ULL;
1875 desc[2] = 0ULL;
1876 }
1877
1878 static netdev_tx_t
1879 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1880 {
1881 struct netxen_adapter *adapter = netdev_priv(netdev);
1882 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1883 struct netxen_cmd_buffer *pbuf;
1884 struct netxen_skb_frag *buffrag;
1885 struct cmd_desc_type0 *hwdesc, *first_desc;
1886 struct pci_dev *pdev;
1887 int i, k;
1888 int delta = 0;
1889 struct skb_frag_struct *frag;
1890
1891 u32 producer;
1892 int frag_count, no_of_desc;
1893 u32 num_txd = tx_ring->num_desc;
1894
1895 frag_count = skb_shinfo(skb)->nr_frags + 1;
1896
1897 /* 14 frags supported for normal packet and
1898 * 32 frags supported for TSO packet
1899 */
1900 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
1901
1902 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
1903 frag = &skb_shinfo(skb)->frags[i];
1904 delta += frag->size;
1905 }
1906
1907 if (!__pskb_pull_tail(skb, delta))
1908 goto drop_packet;
1909
1910 frag_count = 1 + skb_shinfo(skb)->nr_frags;
1911 }
1912 /* 4 fragments per cmd des */
1913 no_of_desc = (frag_count + 3) >> 2;
1914
1915 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1916 netif_stop_queue(netdev);
1917 smp_mb();
1918 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1919 netif_start_queue(netdev);
1920 else
1921 return NETDEV_TX_BUSY;
1922 }
1923
1924 producer = tx_ring->producer;
1925 pbuf = &tx_ring->cmd_buf_arr[producer];
1926
1927 pdev = adapter->pdev;
1928
1929 if (netxen_map_tx_skb(pdev, skb, pbuf))
1930 goto drop_packet;
1931
1932 pbuf->skb = skb;
1933 pbuf->frag_count = frag_count;
1934
1935 first_desc = hwdesc = &tx_ring->desc_head[producer];
1936 netxen_clear_cmddesc((u64 *)hwdesc);
1937
1938 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1939 netxen_set_tx_port(first_desc, adapter->portnum);
1940
1941 for (i = 0; i < frag_count; i++) {
1942
1943 k = i % 4;
1944
1945 if ((k == 0) && (i > 0)) {
1946 /* move to next desc.*/
1947 producer = get_next_index(producer, num_txd);
1948 hwdesc = &tx_ring->desc_head[producer];
1949 netxen_clear_cmddesc((u64 *)hwdesc);
1950 tx_ring->cmd_buf_arr[producer].skb = NULL;
1951 }
1952
1953 buffrag = &pbuf->frag_array[i];
1954
1955 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1956 switch (k) {
1957 case 0:
1958 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1959 break;
1960 case 1:
1961 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1962 break;
1963 case 2:
1964 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1965 break;
1966 case 3:
1967 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1968 break;
1969 }
1970 }
1971
1972 tx_ring->producer = get_next_index(producer, num_txd);
1973
1974 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1975
1976 adapter->stats.txbytes += skb->len;
1977 adapter->stats.xmitcalled++;
1978
1979 netxen_nic_update_cmd_producer(adapter, tx_ring);
1980
1981 return NETDEV_TX_OK;
1982
1983 drop_packet:
1984 adapter->stats.txdropped++;
1985 dev_kfree_skb_any(skb);
1986 return NETDEV_TX_OK;
1987 }
1988
1989 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1990 {
1991 struct net_device *netdev = adapter->netdev;
1992 uint32_t temp, temp_state, temp_val;
1993 int rv = 0;
1994
1995 temp = NXRD32(adapter, CRB_TEMP_STATE);
1996
1997 temp_state = nx_get_temp_state(temp);
1998 temp_val = nx_get_temp_val(temp);
1999
2000 if (temp_state == NX_TEMP_PANIC) {
2001 printk(KERN_ALERT
2002 "%s: Device temperature %d degrees C exceeds"
2003 " maximum allowed. Hardware has been shut down.\n",
2004 netdev->name, temp_val);
2005 rv = 1;
2006 } else if (temp_state == NX_TEMP_WARN) {
2007 if (adapter->temp == NX_TEMP_NORMAL) {
2008 printk(KERN_ALERT
2009 "%s: Device temperature %d degrees C "
2010 "exceeds operating range."
2011 " Immediate action needed.\n",
2012 netdev->name, temp_val);
2013 }
2014 } else {
2015 if (adapter->temp == NX_TEMP_WARN) {
2016 printk(KERN_INFO
2017 "%s: Device temperature is now %d degrees C"
2018 " in normal range.\n", netdev->name,
2019 temp_val);
2020 }
2021 }
2022 adapter->temp = temp_state;
2023 return rv;
2024 }
2025
2026 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2027 {
2028 struct net_device *netdev = adapter->netdev;
2029
2030 if (adapter->ahw.linkup && !linkup) {
2031 printk(KERN_INFO "%s: %s NIC Link is down\n",
2032 netxen_nic_driver_name, netdev->name);
2033 adapter->ahw.linkup = 0;
2034 if (netif_running(netdev)) {
2035 netif_carrier_off(netdev);
2036 netif_stop_queue(netdev);
2037 }
2038 adapter->link_changed = !adapter->has_link_events;
2039 } else if (!adapter->ahw.linkup && linkup) {
2040 printk(KERN_INFO "%s: %s NIC Link is up\n",
2041 netxen_nic_driver_name, netdev->name);
2042 adapter->ahw.linkup = 1;
2043 if (netif_running(netdev)) {
2044 netif_carrier_on(netdev);
2045 netif_wake_queue(netdev);
2046 }
2047 adapter->link_changed = !adapter->has_link_events;
2048 }
2049 }
2050
2051 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2052 {
2053 u32 val, port, linkup;
2054
2055 port = adapter->physical_port;
2056
2057 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2058 val = NXRD32(adapter, CRB_XG_STATE_P3);
2059 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2060 linkup = (val == XG_LINK_UP_P3);
2061 } else {
2062 val = NXRD32(adapter, CRB_XG_STATE);
2063 val = (val >> port*8) & 0xff;
2064 linkup = (val == XG_LINK_UP);
2065 }
2066
2067 netxen_advert_link_change(adapter, linkup);
2068 }
2069
2070 static void netxen_tx_timeout(struct net_device *netdev)
2071 {
2072 struct netxen_adapter *adapter = netdev_priv(netdev);
2073
2074 if (test_bit(__NX_RESETTING, &adapter->state))
2075 return;
2076
2077 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2078 schedule_work(&adapter->tx_timeout_task);
2079 }
2080
2081 static void netxen_tx_timeout_task(struct work_struct *work)
2082 {
2083 struct netxen_adapter *adapter =
2084 container_of(work, struct netxen_adapter, tx_timeout_task);
2085
2086 if (!netif_running(adapter->netdev))
2087 return;
2088
2089 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2090 return;
2091
2092 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2093 goto request_reset;
2094
2095 rtnl_lock();
2096 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2097 /* try to scrub interrupt */
2098 netxen_napi_disable(adapter);
2099
2100 netxen_napi_enable(adapter);
2101
2102 netif_wake_queue(adapter->netdev);
2103
2104 clear_bit(__NX_RESETTING, &adapter->state);
2105 } else {
2106 clear_bit(__NX_RESETTING, &adapter->state);
2107 if (netxen_nic_reset_context(adapter)) {
2108 rtnl_unlock();
2109 goto request_reset;
2110 }
2111 }
2112 adapter->netdev->trans_start = jiffies;
2113 rtnl_unlock();
2114 return;
2115
2116 request_reset:
2117 adapter->need_fw_reset = 1;
2118 clear_bit(__NX_RESETTING, &adapter->state);
2119 }
2120
2121 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *netdev,
2122 struct rtnl_link_stats64 *stats)
2123 {
2124 struct netxen_adapter *adapter = netdev_priv(netdev);
2125
2126 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2127 stats->tx_packets = adapter->stats.xmitfinished;
2128 stats->rx_bytes = adapter->stats.rxbytes;
2129 stats->tx_bytes = adapter->stats.txbytes;
2130 stats->rx_dropped = adapter->stats.rxdropped;
2131 stats->tx_dropped = adapter->stats.txdropped;
2132
2133 return stats;
2134 }
2135
2136 static irqreturn_t netxen_intr(int irq, void *data)
2137 {
2138 struct nx_host_sds_ring *sds_ring = data;
2139 struct netxen_adapter *adapter = sds_ring->adapter;
2140 u32 status = 0;
2141
2142 status = readl(adapter->isr_int_vec);
2143
2144 if (!(status & adapter->int_vec_bit))
2145 return IRQ_NONE;
2146
2147 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2148 /* check interrupt state machine, to be sure */
2149 status = readl(adapter->crb_int_state_reg);
2150 if (!ISR_LEGACY_INT_TRIGGERED(status))
2151 return IRQ_NONE;
2152
2153 } else {
2154 unsigned long our_int = 0;
2155
2156 our_int = readl(adapter->crb_int_state_reg);
2157
2158 /* not our interrupt */
2159 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2160 return IRQ_NONE;
2161
2162 /* claim interrupt */
2163 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2164
2165 /* clear interrupt */
2166 netxen_nic_disable_int(sds_ring);
2167 }
2168
2169 writel(0xffffffff, adapter->tgt_status_reg);
2170 /* read twice to ensure write is flushed */
2171 readl(adapter->isr_int_vec);
2172 readl(adapter->isr_int_vec);
2173
2174 napi_schedule(&sds_ring->napi);
2175
2176 return IRQ_HANDLED;
2177 }
2178
2179 static irqreturn_t netxen_msi_intr(int irq, void *data)
2180 {
2181 struct nx_host_sds_ring *sds_ring = data;
2182 struct netxen_adapter *adapter = sds_ring->adapter;
2183
2184 /* clear interrupt */
2185 writel(0xffffffff, adapter->tgt_status_reg);
2186
2187 napi_schedule(&sds_ring->napi);
2188 return IRQ_HANDLED;
2189 }
2190
2191 static irqreturn_t netxen_msix_intr(int irq, void *data)
2192 {
2193 struct nx_host_sds_ring *sds_ring = data;
2194
2195 napi_schedule(&sds_ring->napi);
2196 return IRQ_HANDLED;
2197 }
2198
2199 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2200 {
2201 struct nx_host_sds_ring *sds_ring =
2202 container_of(napi, struct nx_host_sds_ring, napi);
2203
2204 struct netxen_adapter *adapter = sds_ring->adapter;
2205
2206 int tx_complete;
2207 int work_done;
2208
2209 tx_complete = netxen_process_cmd_ring(adapter);
2210
2211 work_done = netxen_process_rcv_ring(sds_ring, budget);
2212
2213 if ((work_done < budget) && tx_complete) {
2214 napi_complete(&sds_ring->napi);
2215 if (test_bit(__NX_DEV_UP, &adapter->state))
2216 netxen_nic_enable_int(sds_ring);
2217 }
2218
2219 return work_done;
2220 }
2221
2222 #ifdef CONFIG_NET_POLL_CONTROLLER
2223 static void netxen_nic_poll_controller(struct net_device *netdev)
2224 {
2225 int ring;
2226 struct nx_host_sds_ring *sds_ring;
2227 struct netxen_adapter *adapter = netdev_priv(netdev);
2228 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2229
2230 disable_irq(adapter->irq);
2231 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2232 sds_ring = &recv_ctx->sds_rings[ring];
2233 netxen_intr(adapter->irq, sds_ring);
2234 }
2235 enable_irq(adapter->irq);
2236 }
2237 #endif
2238
2239 static int
2240 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2241 {
2242 int count;
2243 if (netxen_api_lock(adapter))
2244 return -EIO;
2245
2246 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2247
2248 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2249
2250 netxen_api_unlock(adapter);
2251 return count;
2252 }
2253
2254 static int
2255 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2256 {
2257 int count;
2258 if (netxen_api_lock(adapter))
2259 return -EIO;
2260
2261 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2262 WARN_ON(count == 0);
2263
2264 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2265
2266 if (count == 0)
2267 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2268
2269 netxen_api_unlock(adapter);
2270 return count;
2271 }
2272
2273 static int
2274 nx_dev_request_aer(struct netxen_adapter *adapter)
2275 {
2276 u32 state;
2277 int ret = -EINVAL;
2278
2279 if (netxen_api_lock(adapter))
2280 return ret;
2281
2282 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2283
2284 if (state == NX_DEV_NEED_AER)
2285 ret = 0;
2286 else if (state == NX_DEV_READY) {
2287 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2288 ret = 0;
2289 }
2290
2291 netxen_api_unlock(adapter);
2292 return ret;
2293 }
2294
2295 static int
2296 nx_dev_request_reset(struct netxen_adapter *adapter)
2297 {
2298 u32 state;
2299 int ret = -EINVAL;
2300
2301 if (netxen_api_lock(adapter))
2302 return ret;
2303
2304 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2305
2306 if (state == NX_DEV_NEED_RESET)
2307 ret = 0;
2308 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2309 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2310 ret = 0;
2311 }
2312
2313 netxen_api_unlock(adapter);
2314
2315 return ret;
2316 }
2317
2318 static int
2319 netxen_can_start_firmware(struct netxen_adapter *adapter)
2320 {
2321 int count;
2322 int can_start = 0;
2323
2324 if (netxen_api_lock(adapter))
2325 return 0;
2326
2327 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2328
2329 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2330 count = 0;
2331
2332 if (count == 0) {
2333 can_start = 1;
2334 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2335 }
2336
2337 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2338
2339 netxen_api_unlock(adapter);
2340
2341 return can_start;
2342 }
2343
2344 static void
2345 netxen_schedule_work(struct netxen_adapter *adapter,
2346 work_func_t func, int delay)
2347 {
2348 INIT_DELAYED_WORK(&adapter->fw_work, func);
2349 schedule_delayed_work(&adapter->fw_work, delay);
2350 }
2351
2352 static void
2353 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2354 {
2355 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2356 msleep(10);
2357
2358 cancel_delayed_work_sync(&adapter->fw_work);
2359 }
2360
2361 static void
2362 netxen_attach_work(struct work_struct *work)
2363 {
2364 struct netxen_adapter *adapter = container_of(work,
2365 struct netxen_adapter, fw_work.work);
2366 struct net_device *netdev = adapter->netdev;
2367 int err = 0;
2368
2369 if (netif_running(netdev)) {
2370 err = netxen_nic_attach(adapter);
2371 if (err)
2372 goto done;
2373
2374 err = netxen_nic_up(adapter, netdev);
2375 if (err) {
2376 netxen_nic_detach(adapter);
2377 goto done;
2378 }
2379
2380 netxen_restore_indev_addr(netdev, NETDEV_UP);
2381 }
2382
2383 netif_device_attach(netdev);
2384
2385 done:
2386 adapter->fw_fail_cnt = 0;
2387 clear_bit(__NX_RESETTING, &adapter->state);
2388 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2389 }
2390
2391 static void
2392 netxen_fwinit_work(struct work_struct *work)
2393 {
2394 struct netxen_adapter *adapter = container_of(work,
2395 struct netxen_adapter, fw_work.work);
2396 int dev_state;
2397
2398 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2399
2400 switch (dev_state) {
2401 case NX_DEV_COLD:
2402 case NX_DEV_READY:
2403 if (!netxen_start_firmware(adapter)) {
2404 netxen_schedule_work(adapter, netxen_attach_work, 0);
2405 return;
2406 }
2407 break;
2408
2409 case NX_DEV_NEED_RESET:
2410 case NX_DEV_INITALIZING:
2411 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2412 netxen_schedule_work(adapter,
2413 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2414 return;
2415 }
2416
2417 case NX_DEV_FAILED:
2418 default:
2419 nx_incr_dev_ref_cnt(adapter);
2420 break;
2421 }
2422
2423 clear_bit(__NX_RESETTING, &adapter->state);
2424 }
2425
2426 static void
2427 netxen_detach_work(struct work_struct *work)
2428 {
2429 struct netxen_adapter *adapter = container_of(work,
2430 struct netxen_adapter, fw_work.work);
2431 struct net_device *netdev = adapter->netdev;
2432 int ref_cnt, delay;
2433 u32 status;
2434
2435 netif_device_detach(netdev);
2436
2437 netxen_nic_down(adapter, netdev);
2438
2439 rtnl_lock();
2440 netxen_nic_detach(adapter);
2441 rtnl_unlock();
2442
2443 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2444
2445 if (status & NX_RCODE_FATAL_ERROR)
2446 goto err_ret;
2447
2448 if (adapter->temp == NX_TEMP_PANIC)
2449 goto err_ret;
2450
2451 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2452
2453 if (ref_cnt == -EIO)
2454 goto err_ret;
2455
2456 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2457
2458 adapter->fw_wait_cnt = 0;
2459 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2460
2461 return;
2462
2463 err_ret:
2464 clear_bit(__NX_RESETTING, &adapter->state);
2465 }
2466
2467 static int
2468 netxen_check_health(struct netxen_adapter *adapter)
2469 {
2470 u32 state, heartbit;
2471 struct net_device *netdev = adapter->netdev;
2472
2473 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2474 if (state == NX_DEV_NEED_AER)
2475 return 0;
2476
2477 if (netxen_nic_check_temp(adapter))
2478 goto detach;
2479
2480 if (adapter->need_fw_reset) {
2481 if (nx_dev_request_reset(adapter))
2482 return 0;
2483 goto detach;
2484 }
2485
2486 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2487 * 1. Tx timeout 2. Fw hang
2488 * Send request to destroy context in case of tx timeout only
2489 * and doesn't required in case of Fw hang
2490 */
2491 if (state == NX_DEV_NEED_RESET) {
2492 adapter->need_fw_reset = 1;
2493 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2494 goto detach;
2495 }
2496
2497 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2498 return 0;
2499
2500 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2501 if (heartbit != adapter->heartbit) {
2502 adapter->heartbit = heartbit;
2503 adapter->fw_fail_cnt = 0;
2504 if (adapter->need_fw_reset)
2505 goto detach;
2506 return 0;
2507 }
2508
2509 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2510 return 0;
2511
2512 if (nx_dev_request_reset(adapter))
2513 return 0;
2514
2515 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2516
2517 dev_info(&netdev->dev, "firmware hang detected\n");
2518
2519 detach:
2520 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2521 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2522 netxen_schedule_work(adapter, netxen_detach_work, 0);
2523 return 1;
2524 }
2525
2526 static void
2527 netxen_fw_poll_work(struct work_struct *work)
2528 {
2529 struct netxen_adapter *adapter = container_of(work,
2530 struct netxen_adapter, fw_work.work);
2531
2532 if (test_bit(__NX_RESETTING, &adapter->state))
2533 goto reschedule;
2534
2535 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2536 if (!adapter->has_link_events) {
2537
2538 netxen_nic_handle_phy_intr(adapter);
2539
2540 if (adapter->link_changed)
2541 netxen_nic_set_link_parameters(adapter);
2542 }
2543 }
2544
2545 if (netxen_check_health(adapter))
2546 return;
2547
2548 reschedule:
2549 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2550 }
2551
2552 static ssize_t
2553 netxen_store_bridged_mode(struct device *dev,
2554 struct device_attribute *attr, const char *buf, size_t len)
2555 {
2556 struct net_device *net = to_net_dev(dev);
2557 struct netxen_adapter *adapter = netdev_priv(net);
2558 unsigned long new;
2559 int ret = -EINVAL;
2560
2561 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2562 goto err_out;
2563
2564 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2565 goto err_out;
2566
2567 if (strict_strtoul(buf, 2, &new))
2568 goto err_out;
2569
2570 if (!netxen_config_bridged_mode(adapter, !!new))
2571 ret = len;
2572
2573 err_out:
2574 return ret;
2575 }
2576
2577 static ssize_t
2578 netxen_show_bridged_mode(struct device *dev,
2579 struct device_attribute *attr, char *buf)
2580 {
2581 struct net_device *net = to_net_dev(dev);
2582 struct netxen_adapter *adapter;
2583 int bridged_mode = 0;
2584
2585 adapter = netdev_priv(net);
2586
2587 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2588 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2589
2590 return sprintf(buf, "%d\n", bridged_mode);
2591 }
2592
2593 static struct device_attribute dev_attr_bridged_mode = {
2594 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2595 .show = netxen_show_bridged_mode,
2596 .store = netxen_store_bridged_mode,
2597 };
2598
2599 static ssize_t
2600 netxen_store_diag_mode(struct device *dev,
2601 struct device_attribute *attr, const char *buf, size_t len)
2602 {
2603 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2604 unsigned long new;
2605
2606 if (strict_strtoul(buf, 2, &new))
2607 return -EINVAL;
2608
2609 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2610 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2611
2612 return len;
2613 }
2614
2615 static ssize_t
2616 netxen_show_diag_mode(struct device *dev,
2617 struct device_attribute *attr, char *buf)
2618 {
2619 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2620
2621 return sprintf(buf, "%d\n",
2622 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2623 }
2624
2625 static struct device_attribute dev_attr_diag_mode = {
2626 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2627 .show = netxen_show_diag_mode,
2628 .store = netxen_store_diag_mode,
2629 };
2630
2631 static int
2632 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2633 loff_t offset, size_t size)
2634 {
2635 size_t crb_size = 4;
2636
2637 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2638 return -EIO;
2639
2640 if (offset < NETXEN_PCI_CRBSPACE) {
2641 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2642 return -EINVAL;
2643
2644 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2645 NETXEN_PCI_CAMQM_2M_END))
2646 crb_size = 8;
2647 else
2648 return -EINVAL;
2649 }
2650
2651 if ((size != crb_size) || (offset & (crb_size-1)))
2652 return -EINVAL;
2653
2654 return 0;
2655 }
2656
2657 static ssize_t
2658 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2659 struct bin_attribute *attr,
2660 char *buf, loff_t offset, size_t size)
2661 {
2662 struct device *dev = container_of(kobj, struct device, kobj);
2663 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2664 u32 data;
2665 u64 qmdata;
2666 int ret;
2667
2668 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2669 if (ret != 0)
2670 return ret;
2671
2672 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2673 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2674 NETXEN_PCI_CAMQM_2M_END)) {
2675 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2676 memcpy(buf, &qmdata, size);
2677 } else {
2678 data = NXRD32(adapter, offset);
2679 memcpy(buf, &data, size);
2680 }
2681
2682 return size;
2683 }
2684
2685 static ssize_t
2686 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2687 struct bin_attribute *attr,
2688 char *buf, loff_t offset, size_t size)
2689 {
2690 struct device *dev = container_of(kobj, struct device, kobj);
2691 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2692 u32 data;
2693 u64 qmdata;
2694 int ret;
2695
2696 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2697 if (ret != 0)
2698 return ret;
2699
2700 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2701 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2702 NETXEN_PCI_CAMQM_2M_END)) {
2703 memcpy(&qmdata, buf, size);
2704 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2705 } else {
2706 memcpy(&data, buf, size);
2707 NXWR32(adapter, offset, data);
2708 }
2709
2710 return size;
2711 }
2712
2713 static int
2714 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2715 loff_t offset, size_t size)
2716 {
2717 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2718 return -EIO;
2719
2720 if ((size != 8) || (offset & 0x7))
2721 return -EIO;
2722
2723 return 0;
2724 }
2725
2726 static ssize_t
2727 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2728 struct bin_attribute *attr,
2729 char *buf, loff_t offset, size_t size)
2730 {
2731 struct device *dev = container_of(kobj, struct device, kobj);
2732 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2733 u64 data;
2734 int ret;
2735
2736 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2737 if (ret != 0)
2738 return ret;
2739
2740 if (adapter->pci_mem_read(adapter, offset, &data))
2741 return -EIO;
2742
2743 memcpy(buf, &data, size);
2744
2745 return size;
2746 }
2747
2748 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2749 struct bin_attribute *attr, char *buf,
2750 loff_t offset, size_t size)
2751 {
2752 struct device *dev = container_of(kobj, struct device, kobj);
2753 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2754 u64 data;
2755 int ret;
2756
2757 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2758 if (ret != 0)
2759 return ret;
2760
2761 memcpy(&data, buf, size);
2762
2763 if (adapter->pci_mem_write(adapter, offset, data))
2764 return -EIO;
2765
2766 return size;
2767 }
2768
2769
2770 static struct bin_attribute bin_attr_crb = {
2771 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2772 .size = 0,
2773 .read = netxen_sysfs_read_crb,
2774 .write = netxen_sysfs_write_crb,
2775 };
2776
2777 static struct bin_attribute bin_attr_mem = {
2778 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2779 .size = 0,
2780 .read = netxen_sysfs_read_mem,
2781 .write = netxen_sysfs_write_mem,
2782 };
2783
2784
2785 static void
2786 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2787 {
2788 struct net_device *netdev = adapter->netdev;
2789 struct device *dev = &netdev->dev;
2790
2791 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2792 /* bridged_mode control */
2793 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2794 dev_warn(&netdev->dev,
2795 "failed to create bridged_mode sysfs entry\n");
2796 }
2797 }
2798 }
2799
2800 static void
2801 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2802 {
2803 struct net_device *netdev = adapter->netdev;
2804 struct device *dev = &netdev->dev;
2805
2806 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2807 device_remove_file(dev, &dev_attr_bridged_mode);
2808 }
2809
2810 static void
2811 netxen_create_diag_entries(struct netxen_adapter *adapter)
2812 {
2813 struct pci_dev *pdev = adapter->pdev;
2814 struct device *dev;
2815
2816 dev = &pdev->dev;
2817 if (device_create_file(dev, &dev_attr_diag_mode))
2818 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2819 if (device_create_bin_file(dev, &bin_attr_crb))
2820 dev_info(dev, "failed to create crb sysfs entry\n");
2821 if (device_create_bin_file(dev, &bin_attr_mem))
2822 dev_info(dev, "failed to create mem sysfs entry\n");
2823 }
2824
2825
2826 static void
2827 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2828 {
2829 struct pci_dev *pdev = adapter->pdev;
2830 struct device *dev = &pdev->dev;
2831
2832 device_remove_file(dev, &dev_attr_diag_mode);
2833 device_remove_bin_file(dev, &bin_attr_crb);
2834 device_remove_bin_file(dev, &bin_attr_mem);
2835 }
2836
2837 #ifdef CONFIG_INET
2838
2839 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2840
2841 static int
2842 netxen_destip_supported(struct netxen_adapter *adapter)
2843 {
2844 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2845 return 0;
2846
2847 if (adapter->ahw.cut_through)
2848 return 0;
2849
2850 return 1;
2851 }
2852
2853 static void
2854 netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
2855 {
2856 struct nx_vlan_ip_list *cur;
2857 struct list_head *head = &adapter->vlan_ip_list;
2858
2859 while (!list_empty(head)) {
2860 cur = list_entry(head->next, struct nx_vlan_ip_list, list);
2861 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
2862 list_del(&cur->list);
2863 kfree(cur);
2864 }
2865
2866 }
2867 static void
2868 netxen_list_config_vlan_ip(struct netxen_adapter *adapter,
2869 struct in_ifaddr *ifa, unsigned long event)
2870 {
2871 struct net_device *dev;
2872 struct nx_vlan_ip_list *cur, *tmp_cur;
2873 struct list_head *head;
2874
2875 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2876
2877 if (dev == NULL)
2878 return;
2879
2880 if (!is_vlan_dev(dev))
2881 return;
2882
2883 switch (event) {
2884 case NX_IP_UP:
2885 list_for_each(head, &adapter->vlan_ip_list) {
2886 cur = list_entry(head, struct nx_vlan_ip_list, list);
2887
2888 if (cur->ip_addr == ifa->ifa_address)
2889 return;
2890 }
2891
2892 cur = kzalloc(sizeof(struct nx_vlan_ip_list), GFP_ATOMIC);
2893 if (cur == NULL) {
2894 printk(KERN_ERR "%s: failed to add vlan ip to list\n",
2895 adapter->netdev->name);
2896 return;
2897 }
2898
2899 cur->ip_addr = ifa->ifa_address;
2900 list_add_tail(&cur->list, &adapter->vlan_ip_list);
2901 break;
2902 case NX_IP_DOWN:
2903 list_for_each_entry_safe(cur, tmp_cur,
2904 &adapter->vlan_ip_list, list) {
2905 if (cur->ip_addr == ifa->ifa_address) {
2906 list_del(&cur->list);
2907 kfree(cur);
2908 break;
2909 }
2910 }
2911 }
2912 }
2913 static void
2914 netxen_config_indev_addr(struct netxen_adapter *adapter,
2915 struct net_device *dev, unsigned long event)
2916 {
2917 struct in_device *indev;
2918
2919 if (!netxen_destip_supported(adapter))
2920 return;
2921
2922 indev = in_dev_get(dev);
2923 if (!indev)
2924 return;
2925
2926 for_ifa(indev) {
2927 switch (event) {
2928 case NETDEV_UP:
2929 netxen_config_ipaddr(adapter,
2930 ifa->ifa_address, NX_IP_UP);
2931 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
2932 break;
2933 case NETDEV_DOWN:
2934 netxen_config_ipaddr(adapter,
2935 ifa->ifa_address, NX_IP_DOWN);
2936 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
2937 break;
2938 default:
2939 break;
2940 }
2941 } endfor_ifa(indev);
2942
2943 in_dev_put(indev);
2944 }
2945
2946 static void
2947 netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
2948
2949 {
2950 struct netxen_adapter *adapter = netdev_priv(netdev);
2951 struct nx_vlan_ip_list *pos, *tmp_pos;
2952 unsigned long ip_event;
2953
2954 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
2955 netxen_config_indev_addr(adapter, netdev, event);
2956
2957 list_for_each_entry_safe(pos, tmp_pos, &adapter->vlan_ip_list, list) {
2958 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
2959 }
2960 }
2961
2962 static int netxen_netdev_event(struct notifier_block *this,
2963 unsigned long event, void *ptr)
2964 {
2965 struct netxen_adapter *adapter;
2966 struct net_device *dev = (struct net_device *)ptr;
2967 struct net_device *orig_dev = dev;
2968
2969 recheck:
2970 if (dev == NULL)
2971 goto done;
2972
2973 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2974 dev = vlan_dev_real_dev(dev);
2975 goto recheck;
2976 }
2977
2978 if (!is_netxen_netdev(dev))
2979 goto done;
2980
2981 adapter = netdev_priv(dev);
2982
2983 if (!adapter)
2984 goto done;
2985
2986 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2987 goto done;
2988
2989 netxen_config_indev_addr(adapter, orig_dev, event);
2990 done:
2991 return NOTIFY_DONE;
2992 }
2993
2994 static int
2995 netxen_inetaddr_event(struct notifier_block *this,
2996 unsigned long event, void *ptr)
2997 {
2998 struct netxen_adapter *adapter;
2999 struct net_device *dev;
3000
3001 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3002
3003 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3004
3005 recheck:
3006 if (dev == NULL)
3007 goto done;
3008
3009 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3010 dev = vlan_dev_real_dev(dev);
3011 goto recheck;
3012 }
3013
3014 if (!is_netxen_netdev(dev))
3015 goto done;
3016
3017 adapter = netdev_priv(dev);
3018
3019 if (!adapter || !netxen_destip_supported(adapter))
3020 goto done;
3021
3022 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3023 goto done;
3024
3025 switch (event) {
3026 case NETDEV_UP:
3027 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3028 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
3029 break;
3030 case NETDEV_DOWN:
3031 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
3032 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
3033 break;
3034 default:
3035 break;
3036 }
3037
3038 done:
3039 return NOTIFY_DONE;
3040 }
3041
3042 static struct notifier_block netxen_netdev_cb = {
3043 .notifier_call = netxen_netdev_event,
3044 };
3045
3046 static struct notifier_block netxen_inetaddr_cb = {
3047 .notifier_call = netxen_inetaddr_event,
3048 };
3049 #else
3050 static void
3051 netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3052 { }
3053 static void
3054 netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
3055 { }
3056 #endif
3057
3058 static struct pci_error_handlers netxen_err_handler = {
3059 .error_detected = netxen_io_error_detected,
3060 .slot_reset = netxen_io_slot_reset,
3061 .resume = netxen_io_resume,
3062 };
3063
3064 static struct pci_driver netxen_driver = {
3065 .name = netxen_nic_driver_name,
3066 .id_table = netxen_pci_tbl,
3067 .probe = netxen_nic_probe,
3068 .remove = __devexit_p(netxen_nic_remove),
3069 #ifdef CONFIG_PM
3070 .suspend = netxen_nic_suspend,
3071 .resume = netxen_nic_resume,
3072 #endif
3073 .shutdown = netxen_nic_shutdown,
3074 .err_handler = &netxen_err_handler
3075 };
3076
3077 static int __init netxen_init_module(void)
3078 {
3079 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3080
3081 #ifdef CONFIG_INET
3082 register_netdevice_notifier(&netxen_netdev_cb);
3083 register_inetaddr_notifier(&netxen_inetaddr_cb);
3084 #endif
3085 return pci_register_driver(&netxen_driver);
3086 }
3087
3088 module_init(netxen_init_module);
3089
3090 static void __exit netxen_exit_module(void)
3091 {
3092 pci_unregister_driver(&netxen_driver);
3093
3094 #ifdef CONFIG_INET
3095 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3096 unregister_netdevice_notifier(&netxen_netdev_cb);
3097 #endif
3098 }
3099
3100 module_exit(netxen_exit_module);
linux-next