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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called "COPYING".
23 *
24 */
25
26 #include <linux/slab.h>
27 #include <linux/vmalloc.h>
28 #include <linux/interrupt.h>
29 #include "netxen_nic_hw.h"
30
31 #include "netxen_nic.h"
32
33 #include <linux/dma-mapping.h>
34 #include <linux/if_vlan.h>
35 #include <net/ip.h>
36 #include <linux/ipv6.h>
37 #include <linux/inetdevice.h>
38 #include <linux/sysfs.h>
39 #include <linux/aer.h>
40
41 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
42 MODULE_LICENSE("GPL");
43 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
44 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
45
46 char netxen_nic_driver_name[] = "netxen_nic";
47 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
48 NETXEN_NIC_LINUX_VERSIONID;
49
50 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
51
52 /* Default to restricted 1G auto-neg mode */
53 static int wol_port_mode = 5;
54
55 static int use_msi = 1;
56
57 static int use_msi_x = 1;
58
59 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
60 module_param(auto_fw_reset, int, 0644);
61 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
62
63 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
64 const struct pci_device_id *ent);
65 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
66 static int netxen_nic_open(struct net_device *netdev);
67 static int netxen_nic_close(struct net_device *netdev);
68 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
69 struct net_device *);
70 static void netxen_tx_timeout(struct net_device *netdev);
71 static void netxen_tx_timeout_task(struct work_struct *work);
72 static void netxen_fw_poll_work(struct work_struct *work);
73 static void netxen_schedule_work(struct netxen_adapter *adapter,
74 work_func_t func, int delay);
75 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
76 static int netxen_nic_poll(struct napi_struct *napi, int budget);
77 #ifdef CONFIG_NET_POLL_CONTROLLER
78 static void netxen_nic_poll_controller(struct net_device *netdev);
79 #endif
80
81 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
82 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
83 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
84 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
85
86 static int nx_dev_request_aer(struct netxen_adapter *adapter);
87 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
88 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
89
90 static irqreturn_t netxen_intr(int irq, void *data);
91 static irqreturn_t netxen_msi_intr(int irq, void *data);
92 static irqreturn_t netxen_msix_intr(int irq, void *data);
93
94 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
95 static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);
96 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
97
98 /* PCI Device ID Table */
99 #define ENTRY(device) \
100 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
101 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
102
103 static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
104 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
105 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
106 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
107 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
110 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
111 ENTRY(PCI_DEVICE_ID_NX3031),
112 {0,}
113 };
114
115 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
116
117 static uint32_t crb_cmd_producer[4] = {
118 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
119 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
120 };
121
122 void
123 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
124 struct nx_host_tx_ring *tx_ring)
125 {
126 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
127 }
128
129 static uint32_t crb_cmd_consumer[4] = {
130 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
131 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
132 };
133
134 static inline void
135 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
136 struct nx_host_tx_ring *tx_ring)
137 {
138 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
139 }
140
141 static uint32_t msi_tgt_status[8] = {
142 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
143 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
144 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
145 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
146 };
147
148 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
149
150 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
151 {
152 struct netxen_adapter *adapter = sds_ring->adapter;
153
154 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
155 }
156
157 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
158 {
159 struct netxen_adapter *adapter = sds_ring->adapter;
160
161 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
162
163 if (!NETXEN_IS_MSI_FAMILY(adapter))
164 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
165 }
166
167 static int
168 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
169 {
170 int size = sizeof(struct nx_host_sds_ring) * count;
171
172 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
173
174 return recv_ctx->sds_rings == NULL;
175 }
176
177 static void
178 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
179 {
180 if (recv_ctx->sds_rings != NULL)
181 kfree(recv_ctx->sds_rings);
182
183 recv_ctx->sds_rings = NULL;
184 }
185
186 static int
187 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
188 {
189 int ring;
190 struct nx_host_sds_ring *sds_ring;
191 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
192
193 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
194 return -ENOMEM;
195
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netif_napi_add(netdev, &sds_ring->napi,
199 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
200 }
201
202 return 0;
203 }
204
205 static void
206 netxen_napi_del(struct netxen_adapter *adapter)
207 {
208 int ring;
209 struct nx_host_sds_ring *sds_ring;
210 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
211
212 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
213 sds_ring = &recv_ctx->sds_rings[ring];
214 netif_napi_del(&sds_ring->napi);
215 }
216
217 netxen_free_sds_rings(&adapter->recv_ctx);
218 }
219
220 static void
221 netxen_napi_enable(struct netxen_adapter *adapter)
222 {
223 int ring;
224 struct nx_host_sds_ring *sds_ring;
225 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
226
227 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
228 sds_ring = &recv_ctx->sds_rings[ring];
229 napi_enable(&sds_ring->napi);
230 netxen_nic_enable_int(sds_ring);
231 }
232 }
233
234 static void
235 netxen_napi_disable(struct netxen_adapter *adapter)
236 {
237 int ring;
238 struct nx_host_sds_ring *sds_ring;
239 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
240
241 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
242 sds_ring = &recv_ctx->sds_rings[ring];
243 netxen_nic_disable_int(sds_ring);
244 napi_synchronize(&sds_ring->napi);
245 napi_disable(&sds_ring->napi);
246 }
247 }
248
249 static int nx_set_dma_mask(struct netxen_adapter *adapter)
250 {
251 struct pci_dev *pdev = adapter->pdev;
252 uint64_t mask, cmask;
253
254 adapter->pci_using_dac = 0;
255
256 mask = DMA_BIT_MASK(32);
257 cmask = DMA_BIT_MASK(32);
258
259 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
260 #ifndef CONFIG_IA64
261 mask = DMA_BIT_MASK(35);
262 #endif
263 } else {
264 mask = DMA_BIT_MASK(39);
265 cmask = mask;
266 }
267
268 if (pci_set_dma_mask(pdev, mask) == 0 &&
269 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
270 adapter->pci_using_dac = 1;
271 return 0;
272 }
273
274 return -EIO;
275 }
276
277 /* Update addressable range if firmware supports it */
278 static int
279 nx_update_dma_mask(struct netxen_adapter *adapter)
280 {
281 int change, shift, err;
282 uint64_t mask, old_mask, old_cmask;
283 struct pci_dev *pdev = adapter->pdev;
284
285 change = 0;
286
287 shift = NXRD32(adapter, CRB_DMA_SHIFT);
288 if (shift > 32)
289 return 0;
290
291 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
292 change = 1;
293 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
294 change = 1;
295
296 if (change) {
297 old_mask = pdev->dma_mask;
298 old_cmask = pdev->dev.coherent_dma_mask;
299
300 mask = DMA_BIT_MASK(32+shift);
301
302 err = pci_set_dma_mask(pdev, mask);
303 if (err)
304 goto err_out;
305
306 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
307
308 err = pci_set_consistent_dma_mask(pdev, mask);
309 if (err)
310 goto err_out;
311 }
312 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
313 }
314
315 return 0;
316
317 err_out:
318 pci_set_dma_mask(pdev, old_mask);
319 pci_set_consistent_dma_mask(pdev, old_cmask);
320 return err;
321 }
322
323 static int
324 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
325 {
326 u32 val, timeout;
327
328 if (first_boot == 0x55555555) {
329 /* This is the first boot after power up */
330 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
331
332 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
333 return 0;
334
335 /* PCI bus master workaround */
336 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
337 if (!(first_boot & 0x4)) {
338 first_boot |= 0x4;
339 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
340 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
341 }
342
343 /* This is the first boot after power up */
344 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
345 if (first_boot != 0x80000f) {
346 /* clear the register for future unloads/loads */
347 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
348 return -EIO;
349 }
350
351 /* Start P2 boot loader */
352 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
353 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
354 timeout = 0;
355 do {
356 msleep(1);
357 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
358
359 if (++timeout > 5000)
360 return -EIO;
361
362 } while (val == NETXEN_BDINFO_MAGIC);
363 }
364 return 0;
365 }
366
367 static void netxen_set_port_mode(struct netxen_adapter *adapter)
368 {
369 u32 val, data;
370
371 val = adapter->ahw.board_type;
372 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
373 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
374 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
375 data = NETXEN_PORT_MODE_802_3_AP;
376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
377 } else if (port_mode == NETXEN_PORT_MODE_XG) {
378 data = NETXEN_PORT_MODE_XG;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
384 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 } else {
387 data = NETXEN_PORT_MODE_AUTO_NEG;
388 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
389 }
390
391 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
392 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
393 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
394 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
395 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
396 }
397 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
398 }
399 }
400
401 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
402 {
403 u32 control;
404 int pos;
405
406 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
407 if (pos) {
408 pci_read_config_dword(pdev, pos, &control);
409 if (enable)
410 control |= PCI_MSIX_FLAGS_ENABLE;
411 else
412 control = 0;
413 pci_write_config_dword(pdev, pos, control);
414 }
415 }
416
417 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
418 {
419 int i;
420
421 for (i = 0; i < count; i++)
422 adapter->msix_entries[i].entry = i;
423 }
424
425 static int
426 netxen_read_mac_addr(struct netxen_adapter *adapter)
427 {
428 int i;
429 unsigned char *p;
430 u64 mac_addr;
431 struct net_device *netdev = adapter->netdev;
432 struct pci_dev *pdev = adapter->pdev;
433
434 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
435 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
436 return -EIO;
437 } else {
438 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
439 return -EIO;
440 }
441
442 p = (unsigned char *)&mac_addr;
443 for (i = 0; i < 6; i++)
444 netdev->dev_addr[i] = *(p + 5 - i);
445
446 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
447 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
448
449 /* set station address */
450
451 if (!is_valid_ether_addr(netdev->perm_addr))
452 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
453
454 return 0;
455 }
456
457 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
458 {
459 struct netxen_adapter *adapter = netdev_priv(netdev);
460 struct sockaddr *addr = p;
461
462 if (!is_valid_ether_addr(addr->sa_data))
463 return -EINVAL;
464
465 if (netif_running(netdev)) {
466 netif_device_detach(netdev);
467 netxen_napi_disable(adapter);
468 }
469
470 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
471 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
472 adapter->macaddr_set(adapter, addr->sa_data);
473
474 if (netif_running(netdev)) {
475 netif_device_attach(netdev);
476 netxen_napi_enable(adapter);
477 }
478 return 0;
479 }
480
481 static void netxen_set_multicast_list(struct net_device *dev)
482 {
483 struct netxen_adapter *adapter = netdev_priv(dev);
484
485 adapter->set_multi(dev);
486 }
487
488 static u32 netxen_fix_features(struct net_device *dev, u32 features)
489 {
490 if (!(features & NETIF_F_RXCSUM)) {
491 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
492
493 features &= ~NETIF_F_LRO;
494 }
495
496 return features;
497 }
498
499 static int netxen_set_features(struct net_device *dev, u32 features)
500 {
501 struct netxen_adapter *adapter = netdev_priv(dev);
502 int hw_lro;
503
504 if (!((dev->features ^ features) & NETIF_F_LRO))
505 return 0;
506
507 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
508 : NETXEN_NIC_LRO_DISABLED;
509
510 if (netxen_config_hw_lro(adapter, hw_lro))
511 return -EIO;
512
513 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
514 return -EIO;
515
516 return 0;
517 }
518
519 static const struct net_device_ops netxen_netdev_ops = {
520 .ndo_open = netxen_nic_open,
521 .ndo_stop = netxen_nic_close,
522 .ndo_start_xmit = netxen_nic_xmit_frame,
523 .ndo_get_stats = netxen_nic_get_stats,
524 .ndo_validate_addr = eth_validate_addr,
525 .ndo_set_multicast_list = netxen_set_multicast_list,
526 .ndo_set_mac_address = netxen_nic_set_mac,
527 .ndo_change_mtu = netxen_nic_change_mtu,
528 .ndo_tx_timeout = netxen_tx_timeout,
529 .ndo_fix_features = netxen_fix_features,
530 .ndo_set_features = netxen_set_features,
531 #ifdef CONFIG_NET_POLL_CONTROLLER
532 .ndo_poll_controller = netxen_nic_poll_controller,
533 #endif
534 };
535
536 static void
537 netxen_setup_intr(struct netxen_adapter *adapter)
538 {
539 struct netxen_legacy_intr_set *legacy_intrp;
540 struct pci_dev *pdev = adapter->pdev;
541 int err, num_msix;
542
543 if (adapter->rss_supported) {
544 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
545 MSIX_ENTRIES_PER_ADAPTER : 2;
546 } else
547 num_msix = 1;
548
549 adapter->max_sds_rings = 1;
550
551 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
552
553 if (adapter->ahw.revision_id >= NX_P3_B0)
554 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
555 else
556 legacy_intrp = &legacy_intr[0];
557
558 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
559 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
560 legacy_intrp->tgt_status_reg);
561 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
562 legacy_intrp->tgt_mask_reg);
563 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
564 legacy_intrp->pci_int_reg);
565 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
566
567 if (adapter->ahw.revision_id >= NX_P3_B1)
568 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
569 ISR_INT_STATE_REG);
570 else
571 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
572 CRB_INT_VECTOR);
573
574 netxen_set_msix_bit(pdev, 0);
575
576 if (adapter->msix_supported) {
577
578 netxen_init_msix_entries(adapter, num_msix);
579 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
580 if (err == 0) {
581 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
582 netxen_set_msix_bit(pdev, 1);
583
584 if (adapter->rss_supported)
585 adapter->max_sds_rings = num_msix;
586
587 dev_info(&pdev->dev, "using msi-x interrupts\n");
588 return;
589 }
590
591 if (err > 0)
592 pci_disable_msix(pdev);
593
594 /* fall through for msi */
595 }
596
597 if (use_msi && !pci_enable_msi(pdev)) {
598 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
599 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
600 msi_tgt_status[adapter->ahw.pci_func]);
601 dev_info(&pdev->dev, "using msi interrupts\n");
602 adapter->msix_entries[0].vector = pdev->irq;
603 return;
604 }
605
606 dev_info(&pdev->dev, "using legacy interrupts\n");
607 adapter->msix_entries[0].vector = pdev->irq;
608 }
609
610 static void
611 netxen_teardown_intr(struct netxen_adapter *adapter)
612 {
613 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
614 pci_disable_msix(adapter->pdev);
615 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
616 pci_disable_msi(adapter->pdev);
617 }
618
619 static void
620 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
621 {
622 if (adapter->ahw.db_base != NULL)
623 iounmap(adapter->ahw.db_base);
624 if (adapter->ahw.pci_base0 != NULL)
625 iounmap(adapter->ahw.pci_base0);
626 if (adapter->ahw.pci_base1 != NULL)
627 iounmap(adapter->ahw.pci_base1);
628 if (adapter->ahw.pci_base2 != NULL)
629 iounmap(adapter->ahw.pci_base2);
630 }
631
632 static int
633 netxen_setup_pci_map(struct netxen_adapter *adapter)
634 {
635 void __iomem *db_ptr = NULL;
636
637 resource_size_t mem_base, db_base;
638 unsigned long mem_len, db_len = 0;
639
640 struct pci_dev *pdev = adapter->pdev;
641 int pci_func = adapter->ahw.pci_func;
642 struct netxen_hardware_context *ahw = &adapter->ahw;
643
644 int err = 0;
645
646 /*
647 * Set the CRB window to invalid. If any register in window 0 is
648 * accessed it should set the window to 0 and then reset it to 1.
649 */
650 adapter->ahw.crb_win = -1;
651 adapter->ahw.ocm_win = -1;
652
653 /* remap phys address */
654 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
655 mem_len = pci_resource_len(pdev, 0);
656
657 /* 128 Meg of memory */
658 if (mem_len == NETXEN_PCI_128MB_SIZE) {
659
660 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
661 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
662 SECOND_PAGE_GROUP_SIZE);
663 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
664 THIRD_PAGE_GROUP_SIZE);
665 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
666 ahw->pci_base2 == NULL) {
667 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
668 err = -EIO;
669 goto err_out;
670 }
671
672 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
673
674 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
675
676 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
677 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
678 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
679 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
680 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
681 err = -EIO;
682 goto err_out;
683 }
684
685 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
686
687 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
688 if (ahw->pci_base0 == NULL) {
689 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
690 return -EIO;
691 }
692 ahw->pci_len0 = mem_len;
693 } else {
694 return -EIO;
695 }
696
697 netxen_setup_hwops(adapter);
698
699 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
700
701 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
702 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
703 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
704
705 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
706 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
707 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
708 }
709
710 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
711 goto skip_doorbell;
712
713 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
714 db_len = pci_resource_len(pdev, 4);
715
716 if (db_len == 0) {
717 printk(KERN_ERR "%s: doorbell is disabled\n",
718 netxen_nic_driver_name);
719 err = -EIO;
720 goto err_out;
721 }
722
723 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
724 if (!db_ptr) {
725 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
726 netxen_nic_driver_name);
727 err = -EIO;
728 goto err_out;
729 }
730
731 skip_doorbell:
732 adapter->ahw.db_base = db_ptr;
733 adapter->ahw.db_len = db_len;
734 return 0;
735
736 err_out:
737 netxen_cleanup_pci_map(adapter);
738 return err;
739 }
740
741 static void
742 netxen_check_options(struct netxen_adapter *adapter)
743 {
744 u32 fw_major, fw_minor, fw_build;
745 char brd_name[NETXEN_MAX_SHORT_NAME];
746 char serial_num[32];
747 int i, offset, val;
748 int *ptr32;
749 struct pci_dev *pdev = adapter->pdev;
750
751 adapter->driver_mismatch = 0;
752
753 ptr32 = (int *)&serial_num;
754 offset = NX_FW_SERIAL_NUM_OFFSET;
755 for (i = 0; i < 8; i++) {
756 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
757 dev_err(&pdev->dev, "error reading board info\n");
758 adapter->driver_mismatch = 1;
759 return;
760 }
761 ptr32[i] = cpu_to_le32(val);
762 offset += sizeof(u32);
763 }
764
765 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
766 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
767 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
768
769 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
770
771 if (adapter->portnum == 0) {
772 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
773
774 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
775 module_name(THIS_MODULE),
776 brd_name, serial_num, adapter->ahw.revision_id);
777 }
778
779 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
780 adapter->driver_mismatch = 1;
781 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
782 fw_major, fw_minor, fw_build);
783 return;
784 }
785
786 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
787 i = NXRD32(adapter, NETXEN_SRE_MISC);
788 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
789 }
790
791 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
792 fw_major, fw_minor, fw_build,
793 adapter->ahw.cut_through ? "cut-through" : "legacy");
794
795 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
796 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
797
798 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
799 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
800 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
801 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
802 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
803 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
804 }
805
806 adapter->msix_supported = 0;
807 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
808 adapter->msix_supported = !!use_msi_x;
809 adapter->rss_supported = !!use_msi_x;
810 } else {
811 u32 flashed_ver = 0;
812 netxen_rom_fast_read(adapter,
813 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
814 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
815
816 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
817 switch (adapter->ahw.board_type) {
818 case NETXEN_BRDTYPE_P2_SB31_10G:
819 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
820 adapter->msix_supported = !!use_msi_x;
821 adapter->rss_supported = !!use_msi_x;
822 break;
823 default:
824 break;
825 }
826 }
827 }
828
829 adapter->num_txd = MAX_CMD_DESCRIPTORS;
830
831 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
832 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
833 adapter->max_rds_rings = 3;
834 } else {
835 adapter->num_lro_rxd = 0;
836 adapter->max_rds_rings = 2;
837 }
838 }
839
840 static int
841 netxen_start_firmware(struct netxen_adapter *adapter)
842 {
843 int val, err, first_boot;
844 struct pci_dev *pdev = adapter->pdev;
845
846 /* required for NX2031 dummy dma */
847 err = nx_set_dma_mask(adapter);
848 if (err)
849 return err;
850
851 if (!netxen_can_start_firmware(adapter))
852 goto wait_init;
853
854 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
855
856 err = netxen_check_hw_init(adapter, first_boot);
857 if (err) {
858 dev_err(&pdev->dev, "error in init HW init sequence\n");
859 return err;
860 }
861
862 netxen_request_firmware(adapter);
863
864 err = netxen_need_fw_reset(adapter);
865 if (err < 0)
866 goto err_out;
867 if (err == 0)
868 goto wait_init;
869
870 if (first_boot != 0x55555555) {
871 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
872 netxen_pinit_from_rom(adapter);
873 msleep(1);
874 }
875
876 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
877 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
878 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
879
880 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
881 netxen_set_port_mode(adapter);
882
883 err = netxen_load_firmware(adapter);
884 if (err)
885 goto err_out;
886
887 netxen_release_firmware(adapter);
888
889 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
890
891 /* Initialize multicast addr pool owners */
892 val = 0x7654;
893 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
894 val |= 0x0f000000;
895 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
896
897 }
898
899 err = netxen_init_dummy_dma(adapter);
900 if (err)
901 goto err_out;
902
903 /*
904 * Tell the hardware our version number.
905 */
906 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
907 | ((_NETXEN_NIC_LINUX_MINOR << 8))
908 | (_NETXEN_NIC_LINUX_SUBVERSION);
909 NXWR32(adapter, CRB_DRIVER_VERSION, val);
910
911 wait_init:
912 /* Handshake with the card before we register the devices. */
913 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
914 if (err) {
915 netxen_free_dummy_dma(adapter);
916 goto err_out;
917 }
918
919 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
920
921 nx_update_dma_mask(adapter);
922
923 netxen_check_options(adapter);
924
925 adapter->need_fw_reset = 0;
926
927 /* fall through and release firmware */
928
929 err_out:
930 netxen_release_firmware(adapter);
931 return err;
932 }
933
934 static int
935 netxen_nic_request_irq(struct netxen_adapter *adapter)
936 {
937 irq_handler_t handler;
938 struct nx_host_sds_ring *sds_ring;
939 int err, ring;
940
941 unsigned long flags = 0;
942 struct net_device *netdev = adapter->netdev;
943 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
944
945 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
946 handler = netxen_msix_intr;
947 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
948 handler = netxen_msi_intr;
949 else {
950 flags |= IRQF_SHARED;
951 handler = netxen_intr;
952 }
953 adapter->irq = netdev->irq;
954
955 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
956 sds_ring = &recv_ctx->sds_rings[ring];
957 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
958 err = request_irq(sds_ring->irq, handler,
959 flags, sds_ring->name, sds_ring);
960 if (err)
961 return err;
962 }
963
964 return 0;
965 }
966
967 static void
968 netxen_nic_free_irq(struct netxen_adapter *adapter)
969 {
970 int ring;
971 struct nx_host_sds_ring *sds_ring;
972
973 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
974
975 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
976 sds_ring = &recv_ctx->sds_rings[ring];
977 free_irq(sds_ring->irq, sds_ring);
978 }
979 }
980
981 static void
982 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
983 {
984 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
985 adapter->coal.normal.data.rx_time_us =
986 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
987 adapter->coal.normal.data.rx_packets =
988 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
989 adapter->coal.normal.data.tx_time_us =
990 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
991 adapter->coal.normal.data.tx_packets =
992 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
993 }
994
995 /* with rtnl_lock */
996 static int
997 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
998 {
999 int err;
1000
1001 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1002 return -EIO;
1003
1004 err = adapter->init_port(adapter, adapter->physical_port);
1005 if (err) {
1006 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1007 netxen_nic_driver_name, adapter->portnum);
1008 return err;
1009 }
1010 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1011 adapter->macaddr_set(adapter, adapter->mac_addr);
1012
1013 adapter->set_multi(netdev);
1014 adapter->set_mtu(adapter, netdev->mtu);
1015
1016 adapter->ahw.linkup = 0;
1017
1018 if (adapter->max_sds_rings > 1)
1019 netxen_config_rss(adapter, 1);
1020
1021 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1022 netxen_config_intr_coalesce(adapter);
1023
1024 if (netdev->features & NETIF_F_LRO)
1025 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1026
1027 netxen_napi_enable(adapter);
1028
1029 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1030 netxen_linkevent_request(adapter, 1);
1031 else
1032 netxen_nic_set_link_parameters(adapter);
1033
1034 set_bit(__NX_DEV_UP, &adapter->state);
1035 return 0;
1036 }
1037
1038 /* Usage: During resume and firmware recovery module.*/
1039
1040 static inline int
1041 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1042 {
1043 int err = 0;
1044
1045 rtnl_lock();
1046 if (netif_running(netdev))
1047 err = __netxen_nic_up(adapter, netdev);
1048 rtnl_unlock();
1049
1050 return err;
1051 }
1052
1053 /* with rtnl_lock */
1054 static void
1055 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1056 {
1057 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1058 return;
1059
1060 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1061 return;
1062
1063 smp_mb();
1064 spin_lock(&adapter->tx_clean_lock);
1065 netif_carrier_off(netdev);
1066 netif_tx_disable(netdev);
1067
1068 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1069 netxen_linkevent_request(adapter, 0);
1070
1071 if (adapter->stop_port)
1072 adapter->stop_port(adapter);
1073
1074 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1075 netxen_p3_free_mac_list(adapter);
1076
1077 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1078
1079 netxen_napi_disable(adapter);
1080
1081 netxen_release_tx_buffers(adapter);
1082 spin_unlock(&adapter->tx_clean_lock);
1083 }
1084
1085 /* Usage: During suspend and firmware recovery module */
1086
1087 static inline void
1088 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1089 {
1090 rtnl_lock();
1091 if (netif_running(netdev))
1092 __netxen_nic_down(adapter, netdev);
1093 rtnl_unlock();
1094
1095 }
1096
1097 static int
1098 netxen_nic_attach(struct netxen_adapter *adapter)
1099 {
1100 struct net_device *netdev = adapter->netdev;
1101 struct pci_dev *pdev = adapter->pdev;
1102 int err, ring;
1103 struct nx_host_rds_ring *rds_ring;
1104 struct nx_host_tx_ring *tx_ring;
1105
1106 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1107 return 0;
1108
1109 err = netxen_init_firmware(adapter);
1110 if (err)
1111 return err;
1112
1113 err = netxen_napi_add(adapter, netdev);
1114 if (err)
1115 return err;
1116
1117 err = netxen_alloc_sw_resources(adapter);
1118 if (err) {
1119 printk(KERN_ERR "%s: Error in setting sw resources\n",
1120 netdev->name);
1121 return err;
1122 }
1123
1124 err = netxen_alloc_hw_resources(adapter);
1125 if (err) {
1126 printk(KERN_ERR "%s: Error in setting hw resources\n",
1127 netdev->name);
1128 goto err_out_free_sw;
1129 }
1130
1131 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1132 tx_ring = adapter->tx_ring;
1133 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1134 crb_cmd_producer[adapter->portnum]);
1135 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1136 crb_cmd_consumer[adapter->portnum]);
1137
1138 tx_ring->producer = 0;
1139 tx_ring->sw_consumer = 0;
1140
1141 netxen_nic_update_cmd_producer(adapter, tx_ring);
1142 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1143 }
1144
1145 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1146 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1147 netxen_post_rx_buffers(adapter, ring, rds_ring);
1148 }
1149
1150 err = netxen_nic_request_irq(adapter);
1151 if (err) {
1152 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1153 netdev->name);
1154 goto err_out_free_rxbuf;
1155 }
1156
1157 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1158 netxen_nic_init_coalesce_defaults(adapter);
1159
1160 netxen_create_sysfs_entries(adapter);
1161
1162 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1163 return 0;
1164
1165 err_out_free_rxbuf:
1166 netxen_release_rx_buffers(adapter);
1167 netxen_free_hw_resources(adapter);
1168 err_out_free_sw:
1169 netxen_free_sw_resources(adapter);
1170 return err;
1171 }
1172
1173 static void
1174 netxen_nic_detach(struct netxen_adapter *adapter)
1175 {
1176 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1177 return;
1178
1179 netxen_remove_sysfs_entries(adapter);
1180
1181 netxen_free_hw_resources(adapter);
1182 netxen_release_rx_buffers(adapter);
1183 netxen_nic_free_irq(adapter);
1184 netxen_napi_del(adapter);
1185 netxen_free_sw_resources(adapter);
1186
1187 adapter->is_up = 0;
1188 }
1189
1190 int
1191 netxen_nic_reset_context(struct netxen_adapter *adapter)
1192 {
1193 int err = 0;
1194 struct net_device *netdev = adapter->netdev;
1195
1196 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1197 return -EBUSY;
1198
1199 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1200
1201 netif_device_detach(netdev);
1202
1203 if (netif_running(netdev))
1204 __netxen_nic_down(adapter, netdev);
1205
1206 netxen_nic_detach(adapter);
1207
1208 if (netif_running(netdev)) {
1209 err = netxen_nic_attach(adapter);
1210 if (!err)
1211 err = __netxen_nic_up(adapter, netdev);
1212
1213 if (err)
1214 goto done;
1215 }
1216
1217 netif_device_attach(netdev);
1218 }
1219
1220 done:
1221 clear_bit(__NX_RESETTING, &adapter->state);
1222 return err;
1223 }
1224
1225 static int
1226 netxen_setup_netdev(struct netxen_adapter *adapter,
1227 struct net_device *netdev)
1228 {
1229 int err = 0;
1230 struct pci_dev *pdev = adapter->pdev;
1231
1232 adapter->mc_enabled = 0;
1233 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1234 adapter->max_mc_count = 38;
1235 else
1236 adapter->max_mc_count = 16;
1237
1238 netdev->netdev_ops = &netxen_netdev_ops;
1239 netdev->watchdog_timeo = 5*HZ;
1240
1241 netxen_nic_change_mtu(netdev, netdev->mtu);
1242
1243 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1244
1245 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1246 NETIF_F_RXCSUM;
1247
1248 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1249 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1250
1251 netdev->vlan_features |= netdev->hw_features;
1252
1253 if (adapter->pci_using_dac) {
1254 netdev->features |= NETIF_F_HIGHDMA;
1255 netdev->vlan_features |= NETIF_F_HIGHDMA;
1256 }
1257
1258 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1259 netdev->hw_features |= NETIF_F_HW_VLAN_TX;
1260
1261 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1262 netdev->hw_features |= NETIF_F_LRO;
1263
1264 netdev->features |= netdev->hw_features;
1265
1266 netdev->irq = adapter->msix_entries[0].vector;
1267
1268 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1269
1270 if (netxen_read_mac_addr(adapter))
1271 dev_warn(&pdev->dev, "failed to read mac addr\n");
1272
1273 netif_carrier_off(netdev);
1274
1275 err = register_netdev(netdev);
1276 if (err) {
1277 dev_err(&pdev->dev, "failed to register net device\n");
1278 return err;
1279 }
1280
1281 return 0;
1282 }
1283
1284 #ifdef CONFIG_PCIEAER
1285 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1286 {
1287 struct pci_dev *pdev = adapter->pdev;
1288 struct pci_dev *root = pdev->bus->self;
1289 u32 aer_pos;
1290
1291 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1292 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1293 return;
1294
1295 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1296 return;
1297
1298 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1299 if (!aer_pos)
1300 return;
1301
1302 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1303 }
1304 #endif
1305
1306 static int __devinit
1307 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1308 {
1309 struct net_device *netdev = NULL;
1310 struct netxen_adapter *adapter = NULL;
1311 int i = 0, err;
1312 int pci_func_id = PCI_FUNC(pdev->devfn);
1313 uint8_t revision_id;
1314 u32 val;
1315
1316 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1317 pr_warning("%s: chip revisions between 0x%x-0x%x "
1318 "will not be enabled.\n",
1319 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1320 return -ENODEV;
1321 }
1322
1323 if ((err = pci_enable_device(pdev)))
1324 return err;
1325
1326 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1327 err = -ENODEV;
1328 goto err_out_disable_pdev;
1329 }
1330
1331 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1332 goto err_out_disable_pdev;
1333
1334 if (NX_IS_REVISION_P3(pdev->revision))
1335 pci_enable_pcie_error_reporting(pdev);
1336
1337 pci_set_master(pdev);
1338
1339 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1340 if(!netdev) {
1341 dev_err(&pdev->dev, "failed to allocate net_device\n");
1342 err = -ENOMEM;
1343 goto err_out_free_res;
1344 }
1345
1346 SET_NETDEV_DEV(netdev, &pdev->dev);
1347
1348 adapter = netdev_priv(netdev);
1349 adapter->netdev = netdev;
1350 adapter->pdev = pdev;
1351 adapter->ahw.pci_func = pci_func_id;
1352
1353 revision_id = pdev->revision;
1354 adapter->ahw.revision_id = revision_id;
1355
1356 rwlock_init(&adapter->ahw.crb_lock);
1357 spin_lock_init(&adapter->ahw.mem_lock);
1358
1359 spin_lock_init(&adapter->tx_clean_lock);
1360 INIT_LIST_HEAD(&adapter->mac_list);
1361
1362 err = netxen_setup_pci_map(adapter);
1363 if (err)
1364 goto err_out_free_netdev;
1365
1366 /* This will be reset for mezz cards */
1367 adapter->portnum = pci_func_id;
1368
1369 err = netxen_nic_get_board_info(adapter);
1370 if (err) {
1371 dev_err(&pdev->dev, "Error getting board config info.\n");
1372 goto err_out_iounmap;
1373 }
1374
1375 #ifdef CONFIG_PCIEAER
1376 netxen_mask_aer_correctable(adapter);
1377 #endif
1378
1379 /* Mezz cards have PCI function 0,2,3 enabled */
1380 switch (adapter->ahw.board_type) {
1381 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1382 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1383 if (pci_func_id >= 2)
1384 adapter->portnum = pci_func_id - 2;
1385 break;
1386 default:
1387 break;
1388 }
1389
1390 if (adapter->portnum == 0) {
1391 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1392 if (val != 0xffffffff && val != 0) {
1393 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1394 adapter->need_fw_reset = 1;
1395 }
1396 }
1397
1398 err = netxen_start_firmware(adapter);
1399 if (err)
1400 goto err_out_decr_ref;
1401
1402 /*
1403 * See if the firmware gave us a virtual-physical port mapping.
1404 */
1405 adapter->physical_port = adapter->portnum;
1406 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1407 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1408 if (i != 0x55555555)
1409 adapter->physical_port = i;
1410 }
1411
1412 netxen_nic_clear_stats(adapter);
1413
1414 netxen_setup_intr(adapter);
1415
1416 err = netxen_setup_netdev(adapter, netdev);
1417 if (err)
1418 goto err_out_disable_msi;
1419
1420 pci_set_drvdata(pdev, adapter);
1421
1422 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1423
1424 switch (adapter->ahw.port_type) {
1425 case NETXEN_NIC_GBE:
1426 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1427 adapter->netdev->name);
1428 break;
1429 case NETXEN_NIC_XGBE:
1430 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1431 adapter->netdev->name);
1432 break;
1433 }
1434
1435 netxen_create_diag_entries(adapter);
1436
1437 return 0;
1438
1439 err_out_disable_msi:
1440 netxen_teardown_intr(adapter);
1441
1442 netxen_free_dummy_dma(adapter);
1443
1444 err_out_decr_ref:
1445 nx_decr_dev_ref_cnt(adapter);
1446
1447 err_out_iounmap:
1448 netxen_cleanup_pci_map(adapter);
1449
1450 err_out_free_netdev:
1451 free_netdev(netdev);
1452
1453 err_out_free_res:
1454 pci_release_regions(pdev);
1455
1456 err_out_disable_pdev:
1457 pci_set_drvdata(pdev, NULL);
1458 pci_disable_device(pdev);
1459 return err;
1460 }
1461
1462 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1463 {
1464 struct netxen_adapter *adapter;
1465 struct net_device *netdev;
1466
1467 adapter = pci_get_drvdata(pdev);
1468 if (adapter == NULL)
1469 return;
1470
1471 netdev = adapter->netdev;
1472
1473 netxen_cancel_fw_work(adapter);
1474
1475 unregister_netdev(netdev);
1476
1477 cancel_work_sync(&adapter->tx_timeout_task);
1478
1479 netxen_nic_detach(adapter);
1480
1481 nx_decr_dev_ref_cnt(adapter);
1482
1483 if (adapter->portnum == 0)
1484 netxen_free_dummy_dma(adapter);
1485
1486 clear_bit(__NX_RESETTING, &adapter->state);
1487
1488 netxen_teardown_intr(adapter);
1489
1490 netxen_remove_diag_entries(adapter);
1491
1492 netxen_cleanup_pci_map(adapter);
1493
1494 netxen_release_firmware(adapter);
1495
1496 if (NX_IS_REVISION_P3(pdev->revision))
1497 pci_disable_pcie_error_reporting(pdev);
1498
1499 pci_release_regions(pdev);
1500 pci_disable_device(pdev);
1501 pci_set_drvdata(pdev, NULL);
1502
1503 free_netdev(netdev);
1504 }
1505
1506 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1507 {
1508 struct net_device *netdev = adapter->netdev;
1509
1510 netif_device_detach(netdev);
1511
1512 netxen_cancel_fw_work(adapter);
1513
1514 if (netif_running(netdev))
1515 netxen_nic_down(adapter, netdev);
1516
1517 cancel_work_sync(&adapter->tx_timeout_task);
1518
1519 netxen_nic_detach(adapter);
1520
1521 if (adapter->portnum == 0)
1522 netxen_free_dummy_dma(adapter);
1523
1524 nx_decr_dev_ref_cnt(adapter);
1525
1526 clear_bit(__NX_RESETTING, &adapter->state);
1527 }
1528
1529 static int netxen_nic_attach_func(struct pci_dev *pdev)
1530 {
1531 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1532 struct net_device *netdev = adapter->netdev;
1533 int err;
1534
1535 err = pci_enable_device(pdev);
1536 if (err)
1537 return err;
1538
1539 pci_set_power_state(pdev, PCI_D0);
1540 pci_set_master(pdev);
1541 pci_restore_state(pdev);
1542
1543 adapter->ahw.crb_win = -1;
1544 adapter->ahw.ocm_win = -1;
1545
1546 err = netxen_start_firmware(adapter);
1547 if (err) {
1548 dev_err(&pdev->dev, "failed to start firmware\n");
1549 return err;
1550 }
1551
1552 if (netif_running(netdev)) {
1553 err = netxen_nic_attach(adapter);
1554 if (err)
1555 goto err_out;
1556
1557 err = netxen_nic_up(adapter, netdev);
1558 if (err)
1559 goto err_out_detach;
1560
1561 netxen_config_indev_addr(netdev, NETDEV_UP);
1562 }
1563
1564 netif_device_attach(netdev);
1565 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1566 return 0;
1567
1568 err_out_detach:
1569 netxen_nic_detach(adapter);
1570 err_out:
1571 nx_decr_dev_ref_cnt(adapter);
1572 return err;
1573 }
1574
1575 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1576 pci_channel_state_t state)
1577 {
1578 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1579
1580 if (state == pci_channel_io_perm_failure)
1581 return PCI_ERS_RESULT_DISCONNECT;
1582
1583 if (nx_dev_request_aer(adapter))
1584 return PCI_ERS_RESULT_RECOVERED;
1585
1586 netxen_nic_detach_func(adapter);
1587
1588 pci_disable_device(pdev);
1589
1590 return PCI_ERS_RESULT_NEED_RESET;
1591 }
1592
1593 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1594 {
1595 int err = 0;
1596
1597 err = netxen_nic_attach_func(pdev);
1598
1599 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1600 }
1601
1602 static void netxen_io_resume(struct pci_dev *pdev)
1603 {
1604 pci_cleanup_aer_uncorrect_error_status(pdev);
1605 }
1606
1607 static void netxen_nic_shutdown(struct pci_dev *pdev)
1608 {
1609 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1610
1611 netxen_nic_detach_func(adapter);
1612
1613 if (pci_save_state(pdev))
1614 return;
1615
1616 if (netxen_nic_wol_supported(adapter)) {
1617 pci_enable_wake(pdev, PCI_D3cold, 1);
1618 pci_enable_wake(pdev, PCI_D3hot, 1);
1619 }
1620
1621 pci_disable_device(pdev);
1622 }
1623
1624 #ifdef CONFIG_PM
1625 static int
1626 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1627 {
1628 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1629 int retval;
1630
1631 netxen_nic_detach_func(adapter);
1632
1633 retval = pci_save_state(pdev);
1634 if (retval)
1635 return retval;
1636
1637 if (netxen_nic_wol_supported(adapter)) {
1638 pci_enable_wake(pdev, PCI_D3cold, 1);
1639 pci_enable_wake(pdev, PCI_D3hot, 1);
1640 }
1641
1642 pci_disable_device(pdev);
1643 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1644
1645 return 0;
1646 }
1647
1648 static int
1649 netxen_nic_resume(struct pci_dev *pdev)
1650 {
1651 return netxen_nic_attach_func(pdev);
1652 }
1653 #endif
1654
1655 static int netxen_nic_open(struct net_device *netdev)
1656 {
1657 struct netxen_adapter *adapter = netdev_priv(netdev);
1658 int err = 0;
1659
1660 if (adapter->driver_mismatch)
1661 return -EIO;
1662
1663 err = netxen_nic_attach(adapter);
1664 if (err)
1665 return err;
1666
1667 err = __netxen_nic_up(adapter, netdev);
1668 if (err)
1669 goto err_out;
1670
1671 netif_start_queue(netdev);
1672
1673 return 0;
1674
1675 err_out:
1676 netxen_nic_detach(adapter);
1677 return err;
1678 }
1679
1680 /*
1681 * netxen_nic_close - Disables a network interface entry point
1682 */
1683 static int netxen_nic_close(struct net_device *netdev)
1684 {
1685 struct netxen_adapter *adapter = netdev_priv(netdev);
1686
1687 __netxen_nic_down(adapter, netdev);
1688 return 0;
1689 }
1690
1691 static void
1692 netxen_tso_check(struct net_device *netdev,
1693 struct nx_host_tx_ring *tx_ring,
1694 struct cmd_desc_type0 *first_desc,
1695 struct sk_buff *skb)
1696 {
1697 u8 opcode = TX_ETHER_PKT;
1698 __be16 protocol = skb->protocol;
1699 u16 flags = 0, vid = 0;
1700 u32 producer;
1701 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1702 struct cmd_desc_type0 *hwdesc;
1703 struct vlan_ethhdr *vh;
1704
1705 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1706
1707 vh = (struct vlan_ethhdr *)skb->data;
1708 protocol = vh->h_vlan_encapsulated_proto;
1709 flags = FLAGS_VLAN_TAGGED;
1710
1711 } else if (vlan_tx_tag_present(skb)) {
1712
1713 flags = FLAGS_VLAN_OOB;
1714 vid = vlan_tx_tag_get(skb);
1715 netxen_set_tx_vlan_tci(first_desc, vid);
1716 vlan_oob = 1;
1717 }
1718
1719 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1720 skb_shinfo(skb)->gso_size > 0) {
1721
1722 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1723
1724 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1725 first_desc->total_hdr_length = hdr_len;
1726 if (vlan_oob) {
1727 first_desc->total_hdr_length += VLAN_HLEN;
1728 first_desc->tcp_hdr_offset = VLAN_HLEN;
1729 first_desc->ip_hdr_offset = VLAN_HLEN;
1730 /* Only in case of TSO on vlan device */
1731 flags |= FLAGS_VLAN_TAGGED;
1732 }
1733
1734 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1735 TX_TCP_LSO6 : TX_TCP_LSO;
1736 tso = 1;
1737
1738 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1739 u8 l4proto;
1740
1741 if (protocol == cpu_to_be16(ETH_P_IP)) {
1742 l4proto = ip_hdr(skb)->protocol;
1743
1744 if (l4proto == IPPROTO_TCP)
1745 opcode = TX_TCP_PKT;
1746 else if(l4proto == IPPROTO_UDP)
1747 opcode = TX_UDP_PKT;
1748 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1749 l4proto = ipv6_hdr(skb)->nexthdr;
1750
1751 if (l4proto == IPPROTO_TCP)
1752 opcode = TX_TCPV6_PKT;
1753 else if(l4proto == IPPROTO_UDP)
1754 opcode = TX_UDPV6_PKT;
1755 }
1756 }
1757
1758 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1759 first_desc->ip_hdr_offset += skb_network_offset(skb);
1760 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1761
1762 if (!tso)
1763 return;
1764
1765 /* For LSO, we need to copy the MAC/IP/TCP headers into
1766 * the descriptor ring
1767 */
1768 producer = tx_ring->producer;
1769 copied = 0;
1770 offset = 2;
1771
1772 if (vlan_oob) {
1773 /* Create a TSO vlan header template for firmware */
1774
1775 hwdesc = &tx_ring->desc_head[producer];
1776 tx_ring->cmd_buf_arr[producer].skb = NULL;
1777
1778 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1779 hdr_len + VLAN_HLEN);
1780
1781 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1782 skb_copy_from_linear_data(skb, vh, 12);
1783 vh->h_vlan_proto = htons(ETH_P_8021Q);
1784 vh->h_vlan_TCI = htons(vid);
1785 skb_copy_from_linear_data_offset(skb, 12,
1786 (char *)vh + 16, copy_len - 16);
1787
1788 copied = copy_len - VLAN_HLEN;
1789 offset = 0;
1790
1791 producer = get_next_index(producer, tx_ring->num_desc);
1792 }
1793
1794 while (copied < hdr_len) {
1795
1796 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1797 (hdr_len - copied));
1798
1799 hwdesc = &tx_ring->desc_head[producer];
1800 tx_ring->cmd_buf_arr[producer].skb = NULL;
1801
1802 skb_copy_from_linear_data_offset(skb, copied,
1803 (char *)hwdesc + offset, copy_len);
1804
1805 copied += copy_len;
1806 offset = 0;
1807
1808 producer = get_next_index(producer, tx_ring->num_desc);
1809 }
1810
1811 tx_ring->producer = producer;
1812 barrier();
1813 }
1814
1815 static int
1816 netxen_map_tx_skb(struct pci_dev *pdev,
1817 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1818 {
1819 struct netxen_skb_frag *nf;
1820 struct skb_frag_struct *frag;
1821 int i, nr_frags;
1822 dma_addr_t map;
1823
1824 nr_frags = skb_shinfo(skb)->nr_frags;
1825 nf = &pbuf->frag_array[0];
1826
1827 map = pci_map_single(pdev, skb->data,
1828 skb_headlen(skb), PCI_DMA_TODEVICE);
1829 if (pci_dma_mapping_error(pdev, map))
1830 goto out_err;
1831
1832 nf->dma = map;
1833 nf->length = skb_headlen(skb);
1834
1835 for (i = 0; i < nr_frags; i++) {
1836 frag = &skb_shinfo(skb)->frags[i];
1837 nf = &pbuf->frag_array[i+1];
1838
1839 map = pci_map_page(pdev, frag->page, frag->page_offset,
1840 frag->size, PCI_DMA_TODEVICE);
1841 if (pci_dma_mapping_error(pdev, map))
1842 goto unwind;
1843
1844 nf->dma = map;
1845 nf->length = frag->size;
1846 }
1847
1848 return 0;
1849
1850 unwind:
1851 while (--i >= 0) {
1852 nf = &pbuf->frag_array[i+1];
1853 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1854 }
1855
1856 nf = &pbuf->frag_array[0];
1857 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1858
1859 out_err:
1860 return -ENOMEM;
1861 }
1862
1863 static inline void
1864 netxen_clear_cmddesc(u64 *desc)
1865 {
1866 desc[0] = 0ULL;
1867 desc[2] = 0ULL;
1868 }
1869
1870 static netdev_tx_t
1871 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1872 {
1873 struct netxen_adapter *adapter = netdev_priv(netdev);
1874 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1875 struct netxen_cmd_buffer *pbuf;
1876 struct netxen_skb_frag *buffrag;
1877 struct cmd_desc_type0 *hwdesc, *first_desc;
1878 struct pci_dev *pdev;
1879 int i, k;
1880 int delta = 0;
1881 struct skb_frag_struct *frag;
1882
1883 u32 producer;
1884 int frag_count, no_of_desc;
1885 u32 num_txd = tx_ring->num_desc;
1886
1887 frag_count = skb_shinfo(skb)->nr_frags + 1;
1888
1889 /* 14 frags supported for normal packet and
1890 * 32 frags supported for TSO packet
1891 */
1892 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
1893
1894 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
1895 frag = &skb_shinfo(skb)->frags[i];
1896 delta += frag->size;
1897 }
1898
1899 if (!__pskb_pull_tail(skb, delta))
1900 goto drop_packet;
1901
1902 frag_count = 1 + skb_shinfo(skb)->nr_frags;
1903 }
1904 /* 4 fragments per cmd des */
1905 no_of_desc = (frag_count + 3) >> 2;
1906
1907 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1908 netif_stop_queue(netdev);
1909 smp_mb();
1910 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1911 netif_start_queue(netdev);
1912 else
1913 return NETDEV_TX_BUSY;
1914 }
1915
1916 producer = tx_ring->producer;
1917 pbuf = &tx_ring->cmd_buf_arr[producer];
1918
1919 pdev = adapter->pdev;
1920
1921 if (netxen_map_tx_skb(pdev, skb, pbuf))
1922 goto drop_packet;
1923
1924 pbuf->skb = skb;
1925 pbuf->frag_count = frag_count;
1926
1927 first_desc = hwdesc = &tx_ring->desc_head[producer];
1928 netxen_clear_cmddesc((u64 *)hwdesc);
1929
1930 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1931 netxen_set_tx_port(first_desc, adapter->portnum);
1932
1933 for (i = 0; i < frag_count; i++) {
1934
1935 k = i % 4;
1936
1937 if ((k == 0) && (i > 0)) {
1938 /* move to next desc.*/
1939 producer = get_next_index(producer, num_txd);
1940 hwdesc = &tx_ring->desc_head[producer];
1941 netxen_clear_cmddesc((u64 *)hwdesc);
1942 tx_ring->cmd_buf_arr[producer].skb = NULL;
1943 }
1944
1945 buffrag = &pbuf->frag_array[i];
1946
1947 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1948 switch (k) {
1949 case 0:
1950 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1951 break;
1952 case 1:
1953 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1954 break;
1955 case 2:
1956 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1957 break;
1958 case 3:
1959 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1960 break;
1961 }
1962 }
1963
1964 tx_ring->producer = get_next_index(producer, num_txd);
1965
1966 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1967
1968 netxen_nic_update_cmd_producer(adapter, tx_ring);
1969
1970 adapter->stats.txbytes += skb->len;
1971 adapter->stats.xmitcalled++;
1972
1973 return NETDEV_TX_OK;
1974
1975 drop_packet:
1976 adapter->stats.txdropped++;
1977 dev_kfree_skb_any(skb);
1978 return NETDEV_TX_OK;
1979 }
1980
1981 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1982 {
1983 struct net_device *netdev = adapter->netdev;
1984 uint32_t temp, temp_state, temp_val;
1985 int rv = 0;
1986
1987 temp = NXRD32(adapter, CRB_TEMP_STATE);
1988
1989 temp_state = nx_get_temp_state(temp);
1990 temp_val = nx_get_temp_val(temp);
1991
1992 if (temp_state == NX_TEMP_PANIC) {
1993 printk(KERN_ALERT
1994 "%s: Device temperature %d degrees C exceeds"
1995 " maximum allowed. Hardware has been shut down.\n",
1996 netdev->name, temp_val);
1997 rv = 1;
1998 } else if (temp_state == NX_TEMP_WARN) {
1999 if (adapter->temp == NX_TEMP_NORMAL) {
2000 printk(KERN_ALERT
2001 "%s: Device temperature %d degrees C "
2002 "exceeds operating range."
2003 " Immediate action needed.\n",
2004 netdev->name, temp_val);
2005 }
2006 } else {
2007 if (adapter->temp == NX_TEMP_WARN) {
2008 printk(KERN_INFO
2009 "%s: Device temperature is now %d degrees C"
2010 " in normal range.\n", netdev->name,
2011 temp_val);
2012 }
2013 }
2014 adapter->temp = temp_state;
2015 return rv;
2016 }
2017
2018 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2019 {
2020 struct net_device *netdev = adapter->netdev;
2021
2022 if (adapter->ahw.linkup && !linkup) {
2023 printk(KERN_INFO "%s: %s NIC Link is down\n",
2024 netxen_nic_driver_name, netdev->name);
2025 adapter->ahw.linkup = 0;
2026 if (netif_running(netdev)) {
2027 netif_carrier_off(netdev);
2028 netif_stop_queue(netdev);
2029 }
2030 adapter->link_changed = !adapter->has_link_events;
2031 } else if (!adapter->ahw.linkup && linkup) {
2032 printk(KERN_INFO "%s: %s NIC Link is up\n",
2033 netxen_nic_driver_name, netdev->name);
2034 adapter->ahw.linkup = 1;
2035 if (netif_running(netdev)) {
2036 netif_carrier_on(netdev);
2037 netif_wake_queue(netdev);
2038 }
2039 adapter->link_changed = !adapter->has_link_events;
2040 }
2041 }
2042
2043 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2044 {
2045 u32 val, port, linkup;
2046
2047 port = adapter->physical_port;
2048
2049 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2050 val = NXRD32(adapter, CRB_XG_STATE_P3);
2051 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2052 linkup = (val == XG_LINK_UP_P3);
2053 } else {
2054 val = NXRD32(adapter, CRB_XG_STATE);
2055 val = (val >> port*8) & 0xff;
2056 linkup = (val == XG_LINK_UP);
2057 }
2058
2059 netxen_advert_link_change(adapter, linkup);
2060 }
2061
2062 static void netxen_tx_timeout(struct net_device *netdev)
2063 {
2064 struct netxen_adapter *adapter = netdev_priv(netdev);
2065
2066 if (test_bit(__NX_RESETTING, &adapter->state))
2067 return;
2068
2069 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2070 schedule_work(&adapter->tx_timeout_task);
2071 }
2072
2073 static void netxen_tx_timeout_task(struct work_struct *work)
2074 {
2075 struct netxen_adapter *adapter =
2076 container_of(work, struct netxen_adapter, tx_timeout_task);
2077
2078 if (!netif_running(adapter->netdev))
2079 return;
2080
2081 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2082 return;
2083
2084 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2085 goto request_reset;
2086
2087 rtnl_lock();
2088 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2089 /* try to scrub interrupt */
2090 netxen_napi_disable(adapter);
2091
2092 netxen_napi_enable(adapter);
2093
2094 netif_wake_queue(adapter->netdev);
2095
2096 clear_bit(__NX_RESETTING, &adapter->state);
2097 } else {
2098 clear_bit(__NX_RESETTING, &adapter->state);
2099 if (netxen_nic_reset_context(adapter)) {
2100 rtnl_unlock();
2101 goto request_reset;
2102 }
2103 }
2104 adapter->netdev->trans_start = jiffies;
2105 rtnl_unlock();
2106 return;
2107
2108 request_reset:
2109 adapter->need_fw_reset = 1;
2110 clear_bit(__NX_RESETTING, &adapter->state);
2111 }
2112
2113 static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
2114 {
2115 struct netxen_adapter *adapter = netdev_priv(netdev);
2116 struct net_device_stats *stats = &netdev->stats;
2117
2118 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2119 stats->tx_packets = adapter->stats.xmitfinished;
2120 stats->rx_bytes = adapter->stats.rxbytes;
2121 stats->tx_bytes = adapter->stats.txbytes;
2122 stats->rx_dropped = adapter->stats.rxdropped;
2123 stats->tx_dropped = adapter->stats.txdropped;
2124
2125 return stats;
2126 }
2127
2128 static irqreturn_t netxen_intr(int irq, void *data)
2129 {
2130 struct nx_host_sds_ring *sds_ring = data;
2131 struct netxen_adapter *adapter = sds_ring->adapter;
2132 u32 status = 0;
2133
2134 status = readl(adapter->isr_int_vec);
2135
2136 if (!(status & adapter->int_vec_bit))
2137 return IRQ_NONE;
2138
2139 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2140 /* check interrupt state machine, to be sure */
2141 status = readl(adapter->crb_int_state_reg);
2142 if (!ISR_LEGACY_INT_TRIGGERED(status))
2143 return IRQ_NONE;
2144
2145 } else {
2146 unsigned long our_int = 0;
2147
2148 our_int = readl(adapter->crb_int_state_reg);
2149
2150 /* not our interrupt */
2151 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2152 return IRQ_NONE;
2153
2154 /* claim interrupt */
2155 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2156
2157 /* clear interrupt */
2158 netxen_nic_disable_int(sds_ring);
2159 }
2160
2161 writel(0xffffffff, adapter->tgt_status_reg);
2162 /* read twice to ensure write is flushed */
2163 readl(adapter->isr_int_vec);
2164 readl(adapter->isr_int_vec);
2165
2166 napi_schedule(&sds_ring->napi);
2167
2168 return IRQ_HANDLED;
2169 }
2170
2171 static irqreturn_t netxen_msi_intr(int irq, void *data)
2172 {
2173 struct nx_host_sds_ring *sds_ring = data;
2174 struct netxen_adapter *adapter = sds_ring->adapter;
2175
2176 /* clear interrupt */
2177 writel(0xffffffff, adapter->tgt_status_reg);
2178
2179 napi_schedule(&sds_ring->napi);
2180 return IRQ_HANDLED;
2181 }
2182
2183 static irqreturn_t netxen_msix_intr(int irq, void *data)
2184 {
2185 struct nx_host_sds_ring *sds_ring = data;
2186
2187 napi_schedule(&sds_ring->napi);
2188 return IRQ_HANDLED;
2189 }
2190
2191 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2192 {
2193 struct nx_host_sds_ring *sds_ring =
2194 container_of(napi, struct nx_host_sds_ring, napi);
2195
2196 struct netxen_adapter *adapter = sds_ring->adapter;
2197
2198 int tx_complete;
2199 int work_done;
2200
2201 tx_complete = netxen_process_cmd_ring(adapter);
2202
2203 work_done = netxen_process_rcv_ring(sds_ring, budget);
2204
2205 if ((work_done < budget) && tx_complete) {
2206 napi_complete(&sds_ring->napi);
2207 if (test_bit(__NX_DEV_UP, &adapter->state))
2208 netxen_nic_enable_int(sds_ring);
2209 }
2210
2211 return work_done;
2212 }
2213
2214 #ifdef CONFIG_NET_POLL_CONTROLLER
2215 static void netxen_nic_poll_controller(struct net_device *netdev)
2216 {
2217 int ring;
2218 struct nx_host_sds_ring *sds_ring;
2219 struct netxen_adapter *adapter = netdev_priv(netdev);
2220 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2221
2222 disable_irq(adapter->irq);
2223 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2224 sds_ring = &recv_ctx->sds_rings[ring];
2225 netxen_intr(adapter->irq, sds_ring);
2226 }
2227 enable_irq(adapter->irq);
2228 }
2229 #endif
2230
2231 static int
2232 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2233 {
2234 int count;
2235 if (netxen_api_lock(adapter))
2236 return -EIO;
2237
2238 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2239
2240 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2241
2242 netxen_api_unlock(adapter);
2243 return count;
2244 }
2245
2246 static int
2247 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2248 {
2249 int count;
2250 if (netxen_api_lock(adapter))
2251 return -EIO;
2252
2253 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2254 WARN_ON(count == 0);
2255
2256 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2257
2258 if (count == 0)
2259 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2260
2261 netxen_api_unlock(adapter);
2262 return count;
2263 }
2264
2265 static int
2266 nx_dev_request_aer(struct netxen_adapter *adapter)
2267 {
2268 u32 state;
2269 int ret = -EINVAL;
2270
2271 if (netxen_api_lock(adapter))
2272 return ret;
2273
2274 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2275
2276 if (state == NX_DEV_NEED_AER)
2277 ret = 0;
2278 else if (state == NX_DEV_READY) {
2279 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2280 ret = 0;
2281 }
2282
2283 netxen_api_unlock(adapter);
2284 return ret;
2285 }
2286
2287 static int
2288 nx_dev_request_reset(struct netxen_adapter *adapter)
2289 {
2290 u32 state;
2291 int ret = -EINVAL;
2292
2293 if (netxen_api_lock(adapter))
2294 return ret;
2295
2296 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2297
2298 if (state == NX_DEV_NEED_RESET)
2299 ret = 0;
2300 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2301 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2302 ret = 0;
2303 }
2304
2305 netxen_api_unlock(adapter);
2306
2307 return ret;
2308 }
2309
2310 static int
2311 netxen_can_start_firmware(struct netxen_adapter *adapter)
2312 {
2313 int count;
2314 int can_start = 0;
2315
2316 if (netxen_api_lock(adapter))
2317 return 0;
2318
2319 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2320
2321 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2322 count = 0;
2323
2324 if (count == 0) {
2325 can_start = 1;
2326 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2327 }
2328
2329 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2330
2331 netxen_api_unlock(adapter);
2332
2333 return can_start;
2334 }
2335
2336 static void
2337 netxen_schedule_work(struct netxen_adapter *adapter,
2338 work_func_t func, int delay)
2339 {
2340 INIT_DELAYED_WORK(&adapter->fw_work, func);
2341 schedule_delayed_work(&adapter->fw_work, delay);
2342 }
2343
2344 static void
2345 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2346 {
2347 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2348 msleep(10);
2349
2350 cancel_delayed_work_sync(&adapter->fw_work);
2351 }
2352
2353 static void
2354 netxen_attach_work(struct work_struct *work)
2355 {
2356 struct netxen_adapter *adapter = container_of(work,
2357 struct netxen_adapter, fw_work.work);
2358 struct net_device *netdev = adapter->netdev;
2359 int err = 0;
2360
2361 if (netif_running(netdev)) {
2362 err = netxen_nic_attach(adapter);
2363 if (err)
2364 goto done;
2365
2366 err = netxen_nic_up(adapter, netdev);
2367 if (err) {
2368 netxen_nic_detach(adapter);
2369 goto done;
2370 }
2371
2372 netxen_config_indev_addr(netdev, NETDEV_UP);
2373 }
2374
2375 netif_device_attach(netdev);
2376
2377 done:
2378 adapter->fw_fail_cnt = 0;
2379 clear_bit(__NX_RESETTING, &adapter->state);
2380 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2381 }
2382
2383 static void
2384 netxen_fwinit_work(struct work_struct *work)
2385 {
2386 struct netxen_adapter *adapter = container_of(work,
2387 struct netxen_adapter, fw_work.work);
2388 int dev_state;
2389
2390 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2391
2392 switch (dev_state) {
2393 case NX_DEV_COLD:
2394 case NX_DEV_READY:
2395 if (!netxen_start_firmware(adapter)) {
2396 netxen_schedule_work(adapter, netxen_attach_work, 0);
2397 return;
2398 }
2399 break;
2400
2401 case NX_DEV_NEED_RESET:
2402 case NX_DEV_INITALIZING:
2403 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2404 netxen_schedule_work(adapter,
2405 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2406 return;
2407 }
2408
2409 case NX_DEV_FAILED:
2410 default:
2411 nx_incr_dev_ref_cnt(adapter);
2412 break;
2413 }
2414
2415 clear_bit(__NX_RESETTING, &adapter->state);
2416 }
2417
2418 static void
2419 netxen_detach_work(struct work_struct *work)
2420 {
2421 struct netxen_adapter *adapter = container_of(work,
2422 struct netxen_adapter, fw_work.work);
2423 struct net_device *netdev = adapter->netdev;
2424 int ref_cnt, delay;
2425 u32 status;
2426
2427 netif_device_detach(netdev);
2428
2429 netxen_nic_down(adapter, netdev);
2430
2431 rtnl_lock();
2432 netxen_nic_detach(adapter);
2433 rtnl_unlock();
2434
2435 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2436
2437 if (status & NX_RCODE_FATAL_ERROR)
2438 goto err_ret;
2439
2440 if (adapter->temp == NX_TEMP_PANIC)
2441 goto err_ret;
2442
2443 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2444
2445 if (ref_cnt == -EIO)
2446 goto err_ret;
2447
2448 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2449
2450 adapter->fw_wait_cnt = 0;
2451 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2452
2453 return;
2454
2455 err_ret:
2456 clear_bit(__NX_RESETTING, &adapter->state);
2457 }
2458
2459 static int
2460 netxen_check_health(struct netxen_adapter *adapter)
2461 {
2462 u32 state, heartbit;
2463 struct net_device *netdev = adapter->netdev;
2464
2465 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2466 if (state == NX_DEV_NEED_AER)
2467 return 0;
2468
2469 if (netxen_nic_check_temp(adapter))
2470 goto detach;
2471
2472 if (adapter->need_fw_reset) {
2473 if (nx_dev_request_reset(adapter))
2474 return 0;
2475 goto detach;
2476 }
2477
2478 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2479 * 1. Tx timeout 2. Fw hang
2480 * Send request to destroy context in case of tx timeout only
2481 * and doesn't required in case of Fw hang
2482 */
2483 if (state == NX_DEV_NEED_RESET) {
2484 adapter->need_fw_reset = 1;
2485 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2486 goto detach;
2487 }
2488
2489 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2490 return 0;
2491
2492 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2493 if (heartbit != adapter->heartbit) {
2494 adapter->heartbit = heartbit;
2495 adapter->fw_fail_cnt = 0;
2496 if (adapter->need_fw_reset)
2497 goto detach;
2498 return 0;
2499 }
2500
2501 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2502 return 0;
2503
2504 if (nx_dev_request_reset(adapter))
2505 return 0;
2506
2507 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2508
2509 dev_info(&netdev->dev, "firmware hang detected\n");
2510
2511 detach:
2512 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2513 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2514 netxen_schedule_work(adapter, netxen_detach_work, 0);
2515 return 1;
2516 }
2517
2518 static void
2519 netxen_fw_poll_work(struct work_struct *work)
2520 {
2521 struct netxen_adapter *adapter = container_of(work,
2522 struct netxen_adapter, fw_work.work);
2523
2524 if (test_bit(__NX_RESETTING, &adapter->state))
2525 goto reschedule;
2526
2527 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2528 if (!adapter->has_link_events) {
2529
2530 netxen_nic_handle_phy_intr(adapter);
2531
2532 if (adapter->link_changed)
2533 netxen_nic_set_link_parameters(adapter);
2534 }
2535 }
2536
2537 if (netxen_check_health(adapter))
2538 return;
2539
2540 reschedule:
2541 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2542 }
2543
2544 static ssize_t
2545 netxen_store_bridged_mode(struct device *dev,
2546 struct device_attribute *attr, const char *buf, size_t len)
2547 {
2548 struct net_device *net = to_net_dev(dev);
2549 struct netxen_adapter *adapter = netdev_priv(net);
2550 unsigned long new;
2551 int ret = -EINVAL;
2552
2553 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2554 goto err_out;
2555
2556 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2557 goto err_out;
2558
2559 if (strict_strtoul(buf, 2, &new))
2560 goto err_out;
2561
2562 if (!netxen_config_bridged_mode(adapter, !!new))
2563 ret = len;
2564
2565 err_out:
2566 return ret;
2567 }
2568
2569 static ssize_t
2570 netxen_show_bridged_mode(struct device *dev,
2571 struct device_attribute *attr, char *buf)
2572 {
2573 struct net_device *net = to_net_dev(dev);
2574 struct netxen_adapter *adapter;
2575 int bridged_mode = 0;
2576
2577 adapter = netdev_priv(net);
2578
2579 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2580 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2581
2582 return sprintf(buf, "%d\n", bridged_mode);
2583 }
2584
2585 static struct device_attribute dev_attr_bridged_mode = {
2586 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2587 .show = netxen_show_bridged_mode,
2588 .store = netxen_store_bridged_mode,
2589 };
2590
2591 static ssize_t
2592 netxen_store_diag_mode(struct device *dev,
2593 struct device_attribute *attr, const char *buf, size_t len)
2594 {
2595 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2596 unsigned long new;
2597
2598 if (strict_strtoul(buf, 2, &new))
2599 return -EINVAL;
2600
2601 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2602 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2603
2604 return len;
2605 }
2606
2607 static ssize_t
2608 netxen_show_diag_mode(struct device *dev,
2609 struct device_attribute *attr, char *buf)
2610 {
2611 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2612
2613 return sprintf(buf, "%d\n",
2614 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2615 }
2616
2617 static struct device_attribute dev_attr_diag_mode = {
2618 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2619 .show = netxen_show_diag_mode,
2620 .store = netxen_store_diag_mode,
2621 };
2622
2623 static int
2624 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2625 loff_t offset, size_t size)
2626 {
2627 size_t crb_size = 4;
2628
2629 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2630 return -EIO;
2631
2632 if (offset < NETXEN_PCI_CRBSPACE) {
2633 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2634 return -EINVAL;
2635
2636 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2637 NETXEN_PCI_CAMQM_2M_END))
2638 crb_size = 8;
2639 else
2640 return -EINVAL;
2641 }
2642
2643 if ((size != crb_size) || (offset & (crb_size-1)))
2644 return -EINVAL;
2645
2646 return 0;
2647 }
2648
2649 static ssize_t
2650 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2651 struct bin_attribute *attr,
2652 char *buf, loff_t offset, size_t size)
2653 {
2654 struct device *dev = container_of(kobj, struct device, kobj);
2655 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2656 u32 data;
2657 u64 qmdata;
2658 int ret;
2659
2660 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2661 if (ret != 0)
2662 return ret;
2663
2664 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2665 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2666 NETXEN_PCI_CAMQM_2M_END)) {
2667 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2668 memcpy(buf, &qmdata, size);
2669 } else {
2670 data = NXRD32(adapter, offset);
2671 memcpy(buf, &data, size);
2672 }
2673
2674 return size;
2675 }
2676
2677 static ssize_t
2678 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2679 struct bin_attribute *attr,
2680 char *buf, loff_t offset, size_t size)
2681 {
2682 struct device *dev = container_of(kobj, struct device, kobj);
2683 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2684 u32 data;
2685 u64 qmdata;
2686 int ret;
2687
2688 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2689 if (ret != 0)
2690 return ret;
2691
2692 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2693 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2694 NETXEN_PCI_CAMQM_2M_END)) {
2695 memcpy(&qmdata, buf, size);
2696 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2697 } else {
2698 memcpy(&data, buf, size);
2699 NXWR32(adapter, offset, data);
2700 }
2701
2702 return size;
2703 }
2704
2705 static int
2706 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2707 loff_t offset, size_t size)
2708 {
2709 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2710 return -EIO;
2711
2712 if ((size != 8) || (offset & 0x7))
2713 return -EIO;
2714
2715 return 0;
2716 }
2717
2718 static ssize_t
2719 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2720 struct bin_attribute *attr,
2721 char *buf, loff_t offset, size_t size)
2722 {
2723 struct device *dev = container_of(kobj, struct device, kobj);
2724 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2725 u64 data;
2726 int ret;
2727
2728 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2729 if (ret != 0)
2730 return ret;
2731
2732 if (adapter->pci_mem_read(adapter, offset, &data))
2733 return -EIO;
2734
2735 memcpy(buf, &data, size);
2736
2737 return size;
2738 }
2739
2740 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2741 struct bin_attribute *attr, char *buf,
2742 loff_t offset, size_t size)
2743 {
2744 struct device *dev = container_of(kobj, struct device, kobj);
2745 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2746 u64 data;
2747 int ret;
2748
2749 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2750 if (ret != 0)
2751 return ret;
2752
2753 memcpy(&data, buf, size);
2754
2755 if (adapter->pci_mem_write(adapter, offset, data))
2756 return -EIO;
2757
2758 return size;
2759 }
2760
2761
2762 static struct bin_attribute bin_attr_crb = {
2763 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2764 .size = 0,
2765 .read = netxen_sysfs_read_crb,
2766 .write = netxen_sysfs_write_crb,
2767 };
2768
2769 static struct bin_attribute bin_attr_mem = {
2770 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2771 .size = 0,
2772 .read = netxen_sysfs_read_mem,
2773 .write = netxen_sysfs_write_mem,
2774 };
2775
2776
2777 static void
2778 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2779 {
2780 struct net_device *netdev = adapter->netdev;
2781 struct device *dev = &netdev->dev;
2782
2783 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2784 /* bridged_mode control */
2785 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2786 dev_warn(&netdev->dev,
2787 "failed to create bridged_mode sysfs entry\n");
2788 }
2789 }
2790 }
2791
2792 static void
2793 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2794 {
2795 struct net_device *netdev = adapter->netdev;
2796 struct device *dev = &netdev->dev;
2797
2798 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2799 device_remove_file(dev, &dev_attr_bridged_mode);
2800 }
2801
2802 static void
2803 netxen_create_diag_entries(struct netxen_adapter *adapter)
2804 {
2805 struct pci_dev *pdev = adapter->pdev;
2806 struct device *dev;
2807
2808 dev = &pdev->dev;
2809 if (device_create_file(dev, &dev_attr_diag_mode))
2810 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2811 if (device_create_bin_file(dev, &bin_attr_crb))
2812 dev_info(dev, "failed to create crb sysfs entry\n");
2813 if (device_create_bin_file(dev, &bin_attr_mem))
2814 dev_info(dev, "failed to create mem sysfs entry\n");
2815 }
2816
2817
2818 static void
2819 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2820 {
2821 struct pci_dev *pdev = adapter->pdev;
2822 struct device *dev = &pdev->dev;
2823
2824 device_remove_file(dev, &dev_attr_diag_mode);
2825 device_remove_bin_file(dev, &bin_attr_crb);
2826 device_remove_bin_file(dev, &bin_attr_mem);
2827 }
2828
2829 #ifdef CONFIG_INET
2830
2831 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2832
2833 static int
2834 netxen_destip_supported(struct netxen_adapter *adapter)
2835 {
2836 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2837 return 0;
2838
2839 if (adapter->ahw.cut_through)
2840 return 0;
2841
2842 return 1;
2843 }
2844
2845 static void
2846 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2847 {
2848 struct in_device *indev;
2849 struct netxen_adapter *adapter = netdev_priv(dev);
2850
2851 if (!netxen_destip_supported(adapter))
2852 return;
2853
2854 indev = in_dev_get(dev);
2855 if (!indev)
2856 return;
2857
2858 for_ifa(indev) {
2859 switch (event) {
2860 case NETDEV_UP:
2861 netxen_config_ipaddr(adapter,
2862 ifa->ifa_address, NX_IP_UP);
2863 break;
2864 case NETDEV_DOWN:
2865 netxen_config_ipaddr(adapter,
2866 ifa->ifa_address, NX_IP_DOWN);
2867 break;
2868 default:
2869 break;
2870 }
2871 } endfor_ifa(indev);
2872
2873 in_dev_put(indev);
2874 }
2875
2876 static int netxen_netdev_event(struct notifier_block *this,
2877 unsigned long event, void *ptr)
2878 {
2879 struct netxen_adapter *adapter;
2880 struct net_device *dev = (struct net_device *)ptr;
2881
2882 recheck:
2883 if (dev == NULL)
2884 goto done;
2885
2886 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2887 dev = vlan_dev_real_dev(dev);
2888 goto recheck;
2889 }
2890
2891 if (!is_netxen_netdev(dev))
2892 goto done;
2893
2894 adapter = netdev_priv(dev);
2895
2896 if (!adapter)
2897 goto done;
2898
2899 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2900 goto done;
2901
2902 netxen_config_indev_addr(dev, event);
2903 done:
2904 return NOTIFY_DONE;
2905 }
2906
2907 static int
2908 netxen_inetaddr_event(struct notifier_block *this,
2909 unsigned long event, void *ptr)
2910 {
2911 struct netxen_adapter *adapter;
2912 struct net_device *dev;
2913
2914 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2915
2916 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2917
2918 recheck:
2919 if (dev == NULL || !netif_running(dev))
2920 goto done;
2921
2922 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2923 dev = vlan_dev_real_dev(dev);
2924 goto recheck;
2925 }
2926
2927 if (!is_netxen_netdev(dev))
2928 goto done;
2929
2930 adapter = netdev_priv(dev);
2931
2932 if (!adapter || !netxen_destip_supported(adapter))
2933 goto done;
2934
2935 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2936 goto done;
2937
2938 switch (event) {
2939 case NETDEV_UP:
2940 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2941 break;
2942 case NETDEV_DOWN:
2943 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2944 break;
2945 default:
2946 break;
2947 }
2948
2949 done:
2950 return NOTIFY_DONE;
2951 }
2952
2953 static struct notifier_block netxen_netdev_cb = {
2954 .notifier_call = netxen_netdev_event,
2955 };
2956
2957 static struct notifier_block netxen_inetaddr_cb = {
2958 .notifier_call = netxen_inetaddr_event,
2959 };
2960 #else
2961 static void
2962 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2963 { }
2964 #endif
2965
2966 static struct pci_error_handlers netxen_err_handler = {
2967 .error_detected = netxen_io_error_detected,
2968 .slot_reset = netxen_io_slot_reset,
2969 .resume = netxen_io_resume,
2970 };
2971
2972 static struct pci_driver netxen_driver = {
2973 .name = netxen_nic_driver_name,
2974 .id_table = netxen_pci_tbl,
2975 .probe = netxen_nic_probe,
2976 .remove = __devexit_p(netxen_nic_remove),
2977 #ifdef CONFIG_PM
2978 .suspend = netxen_nic_suspend,
2979 .resume = netxen_nic_resume,
2980 #endif
2981 .shutdown = netxen_nic_shutdown,
2982 .err_handler = &netxen_err_handler
2983 };
2984
2985 static int __init netxen_init_module(void)
2986 {
2987 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2988
2989 #ifdef CONFIG_INET
2990 register_netdevice_notifier(&netxen_netdev_cb);
2991 register_inetaddr_notifier(&netxen_inetaddr_cb);
2992 #endif
2993 return pci_register_driver(&netxen_driver);
2994 }
2995
2996 module_init(netxen_init_module);
2997
2998 static void __exit netxen_exit_module(void)
2999 {
3000 pci_unregister_driver(&netxen_driver);
3001
3002 #ifdef CONFIG_INET
3003 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3004 unregister_netdevice_notifier(&netxen_netdev_cb);
3005 #endif
3006 }
3007
3008 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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