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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / net / ethernet / qlogic / netxen / netxen_nic_main.c
blob8cf3173ba48818edb795536d5accf7b7ff447de4
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 #define PCI_CAP_ID_GEN 0x10
404
405 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
406 {
407 u32 pdevfuncsave;
408 u32 c8c9value = 0;
409 u32 chicken = 0;
410 u32 control = 0;
411 int i, pos;
412 struct pci_dev *pdev;
413
414 pdev = adapter->pdev;
415
416 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
417 /* clear chicken3.25:24 */
418 chicken &= 0xFCFFFFFF;
419 /*
420 * if gen1 and B0, set F1020 - if gen 2, do nothing
421 * if gen2 set to F1000
422 */
423 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
424 if (pos == 0xC0) {
425 pci_read_config_dword(pdev, pos + 0x10, &control);
426 if ((control & 0x000F0000) != 0x00020000) {
427 /* set chicken3.24 if gen1 */
428 chicken |= 0x01000000;
429 }
430 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
431 c8c9value = 0xF1000;
432 } else {
433 /* set chicken3.24 if gen1 */
434 chicken |= 0x01000000;
435 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
436 if (adapter->ahw.revision_id == NX_P3_B0)
437 c8c9value = 0xF1020;
438 else
439 c8c9value = 0;
440 }
441
442 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
443
444 if (!c8c9value)
445 return;
446
447 pdevfuncsave = pdev->devfn;
448 if (pdevfuncsave & 0x07)
449 return;
450
451 for (i = 0; i < 8; i++) {
452 pci_read_config_dword(pdev, pos + 8, &control);
453 pci_read_config_dword(pdev, pos + 8, &control);
454 pci_write_config_dword(pdev, pos + 8, c8c9value);
455 pdev->devfn++;
456 }
457 pdev->devfn = pdevfuncsave;
458 }
459
460 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
461 {
462 u32 control;
463 int pos;
464
465 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
466 if (pos) {
467 pci_read_config_dword(pdev, pos, &control);
468 if (enable)
469 control |= PCI_MSIX_FLAGS_ENABLE;
470 else
471 control = 0;
472 pci_write_config_dword(pdev, pos, control);
473 }
474 }
475
476 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
477 {
478 int i;
479
480 for (i = 0; i < count; i++)
481 adapter->msix_entries[i].entry = i;
482 }
483
484 static int
485 netxen_read_mac_addr(struct netxen_adapter *adapter)
486 {
487 int i;
488 unsigned char *p;
489 u64 mac_addr;
490 struct net_device *netdev = adapter->netdev;
491 struct pci_dev *pdev = adapter->pdev;
492
493 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
494 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
495 return -EIO;
496 } else {
497 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
498 return -EIO;
499 }
500
501 p = (unsigned char *)&mac_addr;
502 for (i = 0; i < 6; i++)
503 netdev->dev_addr[i] = *(p + 5 - i);
504
505 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
506 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
507
508 /* set station address */
509
510 if (!is_valid_ether_addr(netdev->perm_addr))
511 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
512
513 return 0;
514 }
515
516 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
517 {
518 struct netxen_adapter *adapter = netdev_priv(netdev);
519 struct sockaddr *addr = p;
520
521 if (!is_valid_ether_addr(addr->sa_data))
522 return -EINVAL;
523
524 if (netif_running(netdev)) {
525 netif_device_detach(netdev);
526 netxen_napi_disable(adapter);
527 }
528
529 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
530 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
531 adapter->macaddr_set(adapter, addr->sa_data);
532
533 if (netif_running(netdev)) {
534 netif_device_attach(netdev);
535 netxen_napi_enable(adapter);
536 }
537 return 0;
538 }
539
540 static void netxen_set_multicast_list(struct net_device *dev)
541 {
542 struct netxen_adapter *adapter = netdev_priv(dev);
543
544 adapter->set_multi(dev);
545 }
546
547 static u32 netxen_fix_features(struct net_device *dev, u32 features)
548 {
549 if (!(features & NETIF_F_RXCSUM)) {
550 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
551
552 features &= ~NETIF_F_LRO;
553 }
554
555 return features;
556 }
557
558 static int netxen_set_features(struct net_device *dev, u32 features)
559 {
560 struct netxen_adapter *adapter = netdev_priv(dev);
561 int hw_lro;
562
563 if (!((dev->features ^ features) & NETIF_F_LRO))
564 return 0;
565
566 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
567 : NETXEN_NIC_LRO_DISABLED;
568
569 if (netxen_config_hw_lro(adapter, hw_lro))
570 return -EIO;
571
572 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
573 return -EIO;
574
575 return 0;
576 }
577
578 static const struct net_device_ops netxen_netdev_ops = {
579 .ndo_open = netxen_nic_open,
580 .ndo_stop = netxen_nic_close,
581 .ndo_start_xmit = netxen_nic_xmit_frame,
582 .ndo_get_stats64 = netxen_nic_get_stats,
583 .ndo_validate_addr = eth_validate_addr,
584 .ndo_set_rx_mode = netxen_set_multicast_list,
585 .ndo_set_mac_address = netxen_nic_set_mac,
586 .ndo_change_mtu = netxen_nic_change_mtu,
587 .ndo_tx_timeout = netxen_tx_timeout,
588 .ndo_fix_features = netxen_fix_features,
589 .ndo_set_features = netxen_set_features,
590 #ifdef CONFIG_NET_POLL_CONTROLLER
591 .ndo_poll_controller = netxen_nic_poll_controller,
592 #endif
593 };
594
595 static void
596 netxen_setup_intr(struct netxen_adapter *adapter)
597 {
598 struct netxen_legacy_intr_set *legacy_intrp;
599 struct pci_dev *pdev = adapter->pdev;
600 int err, num_msix;
601
602 if (adapter->rss_supported) {
603 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
604 MSIX_ENTRIES_PER_ADAPTER : 2;
605 } else
606 num_msix = 1;
607
608 adapter->max_sds_rings = 1;
609
610 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
611
612 if (adapter->ahw.revision_id >= NX_P3_B0)
613 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
614 else
615 legacy_intrp = &legacy_intr[0];
616
617 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
618 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
619 legacy_intrp->tgt_status_reg);
620 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
621 legacy_intrp->tgt_mask_reg);
622 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
623 legacy_intrp->pci_int_reg);
624 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
625
626 if (adapter->ahw.revision_id >= NX_P3_B1)
627 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
628 ISR_INT_STATE_REG);
629 else
630 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
631 CRB_INT_VECTOR);
632
633 netxen_set_msix_bit(pdev, 0);
634
635 if (adapter->msix_supported) {
636
637 netxen_init_msix_entries(adapter, num_msix);
638 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
639 if (err == 0) {
640 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
641 netxen_set_msix_bit(pdev, 1);
642
643 if (adapter->rss_supported)
644 adapter->max_sds_rings = num_msix;
645
646 dev_info(&pdev->dev, "using msi-x interrupts\n");
647 return;
648 }
649
650 if (err > 0)
651 pci_disable_msix(pdev);
652
653 /* fall through for msi */
654 }
655
656 if (use_msi && !pci_enable_msi(pdev)) {
657 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
658 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
659 msi_tgt_status[adapter->ahw.pci_func]);
660 dev_info(&pdev->dev, "using msi interrupts\n");
661 adapter->msix_entries[0].vector = pdev->irq;
662 return;
663 }
664
665 dev_info(&pdev->dev, "using legacy interrupts\n");
666 adapter->msix_entries[0].vector = pdev->irq;
667 }
668
669 static void
670 netxen_teardown_intr(struct netxen_adapter *adapter)
671 {
672 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
673 pci_disable_msix(adapter->pdev);
674 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
675 pci_disable_msi(adapter->pdev);
676 }
677
678 static void
679 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
680 {
681 if (adapter->ahw.db_base != NULL)
682 iounmap(adapter->ahw.db_base);
683 if (adapter->ahw.pci_base0 != NULL)
684 iounmap(adapter->ahw.pci_base0);
685 if (adapter->ahw.pci_base1 != NULL)
686 iounmap(adapter->ahw.pci_base1);
687 if (adapter->ahw.pci_base2 != NULL)
688 iounmap(adapter->ahw.pci_base2);
689 }
690
691 static int
692 netxen_setup_pci_map(struct netxen_adapter *adapter)
693 {
694 void __iomem *db_ptr = NULL;
695
696 resource_size_t mem_base, db_base;
697 unsigned long mem_len, db_len = 0;
698
699 struct pci_dev *pdev = adapter->pdev;
700 int pci_func = adapter->ahw.pci_func;
701 struct netxen_hardware_context *ahw = &adapter->ahw;
702
703 int err = 0;
704
705 /*
706 * Set the CRB window to invalid. If any register in window 0 is
707 * accessed it should set the window to 0 and then reset it to 1.
708 */
709 adapter->ahw.crb_win = -1;
710 adapter->ahw.ocm_win = -1;
711
712 /* remap phys address */
713 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
714 mem_len = pci_resource_len(pdev, 0);
715
716 /* 128 Meg of memory */
717 if (mem_len == NETXEN_PCI_128MB_SIZE) {
718
719 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
720 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
721 SECOND_PAGE_GROUP_SIZE);
722 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
723 THIRD_PAGE_GROUP_SIZE);
724 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
725 ahw->pci_base2 == NULL) {
726 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
727 err = -EIO;
728 goto err_out;
729 }
730
731 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
732
733 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
734
735 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
736 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
737 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
738 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
739 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
740 err = -EIO;
741 goto err_out;
742 }
743
744 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
745
746 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
747 if (ahw->pci_base0 == NULL) {
748 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
749 return -EIO;
750 }
751 ahw->pci_len0 = mem_len;
752 } else {
753 return -EIO;
754 }
755
756 netxen_setup_hwops(adapter);
757
758 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
759
760 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
761 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
762 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
763
764 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
765 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
766 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
767 }
768
769 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
770 goto skip_doorbell;
771
772 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
773 db_len = pci_resource_len(pdev, 4);
774
775 if (db_len == 0) {
776 printk(KERN_ERR "%s: doorbell is disabled\n",
777 netxen_nic_driver_name);
778 err = -EIO;
779 goto err_out;
780 }
781
782 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
783 if (!db_ptr) {
784 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
785 netxen_nic_driver_name);
786 err = -EIO;
787 goto err_out;
788 }
789
790 skip_doorbell:
791 adapter->ahw.db_base = db_ptr;
792 adapter->ahw.db_len = db_len;
793 return 0;
794
795 err_out:
796 netxen_cleanup_pci_map(adapter);
797 return err;
798 }
799
800 static void
801 netxen_check_options(struct netxen_adapter *adapter)
802 {
803 u32 fw_major, fw_minor, fw_build;
804 char brd_name[NETXEN_MAX_SHORT_NAME];
805 char serial_num[32];
806 int i, offset, val;
807 int *ptr32;
808 struct pci_dev *pdev = adapter->pdev;
809
810 adapter->driver_mismatch = 0;
811
812 ptr32 = (int *)&serial_num;
813 offset = NX_FW_SERIAL_NUM_OFFSET;
814 for (i = 0; i < 8; i++) {
815 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
816 dev_err(&pdev->dev, "error reading board info\n");
817 adapter->driver_mismatch = 1;
818 return;
819 }
820 ptr32[i] = cpu_to_le32(val);
821 offset += sizeof(u32);
822 }
823
824 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
825 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
826 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
827
828 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
829
830 if (adapter->portnum == 0) {
831 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
832
833 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
834 module_name(THIS_MODULE),
835 brd_name, serial_num, adapter->ahw.revision_id);
836 }
837
838 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
839 adapter->driver_mismatch = 1;
840 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
841 fw_major, fw_minor, fw_build);
842 return;
843 }
844
845 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
846 i = NXRD32(adapter, NETXEN_SRE_MISC);
847 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
848 }
849
850 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
851 fw_major, fw_minor, fw_build,
852 adapter->ahw.cut_through ? "cut-through" : "legacy");
853
854 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
855 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
856
857 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
858 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
859 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
860 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
861 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
862 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
863 }
864
865 adapter->msix_supported = 0;
866 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
867 adapter->msix_supported = !!use_msi_x;
868 adapter->rss_supported = !!use_msi_x;
869 } else {
870 u32 flashed_ver = 0;
871 netxen_rom_fast_read(adapter,
872 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
873 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
874
875 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
876 switch (adapter->ahw.board_type) {
877 case NETXEN_BRDTYPE_P2_SB31_10G:
878 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
879 adapter->msix_supported = !!use_msi_x;
880 adapter->rss_supported = !!use_msi_x;
881 break;
882 default:
883 break;
884 }
885 }
886 }
887
888 adapter->num_txd = MAX_CMD_DESCRIPTORS;
889
890 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
891 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
892 adapter->max_rds_rings = 3;
893 } else {
894 adapter->num_lro_rxd = 0;
895 adapter->max_rds_rings = 2;
896 }
897 }
898
899 static int
900 netxen_start_firmware(struct netxen_adapter *adapter)
901 {
902 int val, err, first_boot;
903 struct pci_dev *pdev = adapter->pdev;
904
905 /* required for NX2031 dummy dma */
906 err = nx_set_dma_mask(adapter);
907 if (err)
908 return err;
909
910 if (!netxen_can_start_firmware(adapter))
911 goto wait_init;
912
913 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
914
915 err = netxen_check_hw_init(adapter, first_boot);
916 if (err) {
917 dev_err(&pdev->dev, "error in init HW init sequence\n");
918 return err;
919 }
920
921 netxen_request_firmware(adapter);
922
923 err = netxen_need_fw_reset(adapter);
924 if (err < 0)
925 goto err_out;
926 if (err == 0)
927 goto pcie_strap_init;
928
929 if (first_boot != 0x55555555) {
930 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
931 netxen_pinit_from_rom(adapter);
932 msleep(1);
933 }
934
935 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
936 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
937 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
938
939 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
940 netxen_set_port_mode(adapter);
941
942 err = netxen_load_firmware(adapter);
943 if (err)
944 goto err_out;
945
946 netxen_release_firmware(adapter);
947
948 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
949
950 /* Initialize multicast addr pool owners */
951 val = 0x7654;
952 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
953 val |= 0x0f000000;
954 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
955
956 }
957
958 err = netxen_init_dummy_dma(adapter);
959 if (err)
960 goto err_out;
961
962 /*
963 * Tell the hardware our version number.
964 */
965 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
966 | ((_NETXEN_NIC_LINUX_MINOR << 8))
967 | (_NETXEN_NIC_LINUX_SUBVERSION);
968 NXWR32(adapter, CRB_DRIVER_VERSION, val);
969
970 pcie_strap_init:
971 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
972 netxen_pcie_strap_init(adapter);
973
974 wait_init:
975 /* Handshake with the card before we register the devices. */
976 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
977 if (err) {
978 netxen_free_dummy_dma(adapter);
979 goto err_out;
980 }
981
982 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
983
984 nx_update_dma_mask(adapter);
985
986 netxen_check_options(adapter);
987
988 adapter->need_fw_reset = 0;
989
990 /* fall through and release firmware */
991
992 err_out:
993 netxen_release_firmware(adapter);
994 return err;
995 }
996
997 static int
998 netxen_nic_request_irq(struct netxen_adapter *adapter)
999 {
1000 irq_handler_t handler;
1001 struct nx_host_sds_ring *sds_ring;
1002 int err, ring;
1003
1004 unsigned long flags = 0;
1005 struct net_device *netdev = adapter->netdev;
1006 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1007
1008 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1009 handler = netxen_msix_intr;
1010 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1011 handler = netxen_msi_intr;
1012 else {
1013 flags |= IRQF_SHARED;
1014 handler = netxen_intr;
1015 }
1016 adapter->irq = netdev->irq;
1017
1018 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1019 sds_ring = &recv_ctx->sds_rings[ring];
1020 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1021 err = request_irq(sds_ring->irq, handler,
1022 flags, sds_ring->name, sds_ring);
1023 if (err)
1024 return err;
1025 }
1026
1027 return 0;
1028 }
1029
1030 static void
1031 netxen_nic_free_irq(struct netxen_adapter *adapter)
1032 {
1033 int ring;
1034 struct nx_host_sds_ring *sds_ring;
1035
1036 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1037
1038 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1039 sds_ring = &recv_ctx->sds_rings[ring];
1040 free_irq(sds_ring->irq, sds_ring);
1041 }
1042 }
1043
1044 static void
1045 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1046 {
1047 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1048 adapter->coal.normal.data.rx_time_us =
1049 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1050 adapter->coal.normal.data.rx_packets =
1051 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1052 adapter->coal.normal.data.tx_time_us =
1053 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1054 adapter->coal.normal.data.tx_packets =
1055 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1056 }
1057
1058 /* with rtnl_lock */
1059 static int
1060 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1061 {
1062 int err;
1063
1064 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1065 return -EIO;
1066
1067 err = adapter->init_port(adapter, adapter->physical_port);
1068 if (err) {
1069 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1070 netxen_nic_driver_name, adapter->portnum);
1071 return err;
1072 }
1073 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1074 adapter->macaddr_set(adapter, adapter->mac_addr);
1075
1076 adapter->set_multi(netdev);
1077 adapter->set_mtu(adapter, netdev->mtu);
1078
1079 adapter->ahw.linkup = 0;
1080
1081 if (adapter->max_sds_rings > 1)
1082 netxen_config_rss(adapter, 1);
1083
1084 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1085 netxen_config_intr_coalesce(adapter);
1086
1087 if (netdev->features & NETIF_F_LRO)
1088 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1089
1090 netxen_napi_enable(adapter);
1091
1092 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1093 netxen_linkevent_request(adapter, 1);
1094 else
1095 netxen_nic_set_link_parameters(adapter);
1096
1097 set_bit(__NX_DEV_UP, &adapter->state);
1098 return 0;
1099 }
1100
1101 /* Usage: During resume and firmware recovery module.*/
1102
1103 static inline int
1104 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1105 {
1106 int err = 0;
1107
1108 rtnl_lock();
1109 if (netif_running(netdev))
1110 err = __netxen_nic_up(adapter, netdev);
1111 rtnl_unlock();
1112
1113 return err;
1114 }
1115
1116 /* with rtnl_lock */
1117 static void
1118 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1119 {
1120 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1121 return;
1122
1123 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1124 return;
1125
1126 smp_mb();
1127 spin_lock(&adapter->tx_clean_lock);
1128 netif_carrier_off(netdev);
1129 netif_tx_disable(netdev);
1130
1131 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1132 netxen_linkevent_request(adapter, 0);
1133
1134 if (adapter->stop_port)
1135 adapter->stop_port(adapter);
1136
1137 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1138 netxen_p3_free_mac_list(adapter);
1139
1140 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1141
1142 netxen_napi_disable(adapter);
1143
1144 netxen_release_tx_buffers(adapter);
1145 spin_unlock(&adapter->tx_clean_lock);
1146 }
1147
1148 /* Usage: During suspend and firmware recovery module */
1149
1150 static inline void
1151 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1152 {
1153 rtnl_lock();
1154 if (netif_running(netdev))
1155 __netxen_nic_down(adapter, netdev);
1156 rtnl_unlock();
1157
1158 }
1159
1160 static int
1161 netxen_nic_attach(struct netxen_adapter *adapter)
1162 {
1163 struct net_device *netdev = adapter->netdev;
1164 struct pci_dev *pdev = adapter->pdev;
1165 int err, ring;
1166 struct nx_host_rds_ring *rds_ring;
1167 struct nx_host_tx_ring *tx_ring;
1168
1169 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1170 return 0;
1171
1172 err = netxen_init_firmware(adapter);
1173 if (err)
1174 return err;
1175
1176 err = netxen_napi_add(adapter, netdev);
1177 if (err)
1178 return err;
1179
1180 err = netxen_alloc_sw_resources(adapter);
1181 if (err) {
1182 printk(KERN_ERR "%s: Error in setting sw resources\n",
1183 netdev->name);
1184 return err;
1185 }
1186
1187 err = netxen_alloc_hw_resources(adapter);
1188 if (err) {
1189 printk(KERN_ERR "%s: Error in setting hw resources\n",
1190 netdev->name);
1191 goto err_out_free_sw;
1192 }
1193
1194 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1195 tx_ring = adapter->tx_ring;
1196 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1197 crb_cmd_producer[adapter->portnum]);
1198 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1199 crb_cmd_consumer[adapter->portnum]);
1200
1201 tx_ring->producer = 0;
1202 tx_ring->sw_consumer = 0;
1203
1204 netxen_nic_update_cmd_producer(adapter, tx_ring);
1205 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1206 }
1207
1208 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1209 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1210 netxen_post_rx_buffers(adapter, ring, rds_ring);
1211 }
1212
1213 err = netxen_nic_request_irq(adapter);
1214 if (err) {
1215 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1216 netdev->name);
1217 goto err_out_free_rxbuf;
1218 }
1219
1220 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1221 netxen_nic_init_coalesce_defaults(adapter);
1222
1223 netxen_create_sysfs_entries(adapter);
1224
1225 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1226 return 0;
1227
1228 err_out_free_rxbuf:
1229 netxen_release_rx_buffers(adapter);
1230 netxen_free_hw_resources(adapter);
1231 err_out_free_sw:
1232 netxen_free_sw_resources(adapter);
1233 return err;
1234 }
1235
1236 static void
1237 netxen_nic_detach(struct netxen_adapter *adapter)
1238 {
1239 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1240 return;
1241
1242 netxen_remove_sysfs_entries(adapter);
1243
1244 netxen_free_hw_resources(adapter);
1245 netxen_release_rx_buffers(adapter);
1246 netxen_nic_free_irq(adapter);
1247 netxen_napi_del(adapter);
1248 netxen_free_sw_resources(adapter);
1249
1250 adapter->is_up = 0;
1251 }
1252
1253 int
1254 netxen_nic_reset_context(struct netxen_adapter *adapter)
1255 {
1256 int err = 0;
1257 struct net_device *netdev = adapter->netdev;
1258
1259 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1260 return -EBUSY;
1261
1262 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1263
1264 netif_device_detach(netdev);
1265
1266 if (netif_running(netdev))
1267 __netxen_nic_down(adapter, netdev);
1268
1269 netxen_nic_detach(adapter);
1270
1271 if (netif_running(netdev)) {
1272 err = netxen_nic_attach(adapter);
1273 if (!err)
1274 err = __netxen_nic_up(adapter, netdev);
1275
1276 if (err)
1277 goto done;
1278 }
1279
1280 netif_device_attach(netdev);
1281 }
1282
1283 done:
1284 clear_bit(__NX_RESETTING, &adapter->state);
1285 return err;
1286 }
1287
1288 static int
1289 netxen_setup_netdev(struct netxen_adapter *adapter,
1290 struct net_device *netdev)
1291 {
1292 int err = 0;
1293 struct pci_dev *pdev = adapter->pdev;
1294
1295 adapter->mc_enabled = 0;
1296 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1297 adapter->max_mc_count = 38;
1298 else
1299 adapter->max_mc_count = 16;
1300
1301 netdev->netdev_ops = &netxen_netdev_ops;
1302 netdev->watchdog_timeo = 5*HZ;
1303
1304 netxen_nic_change_mtu(netdev, netdev->mtu);
1305
1306 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1307
1308 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1309 NETIF_F_RXCSUM;
1310
1311 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1312 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1313
1314 netdev->vlan_features |= netdev->hw_features;
1315
1316 if (adapter->pci_using_dac) {
1317 netdev->features |= NETIF_F_HIGHDMA;
1318 netdev->vlan_features |= NETIF_F_HIGHDMA;
1319 }
1320
1321 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1322 netdev->hw_features |= NETIF_F_HW_VLAN_TX;
1323
1324 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1325 netdev->hw_features |= NETIF_F_LRO;
1326
1327 netdev->features |= netdev->hw_features;
1328
1329 netdev->irq = adapter->msix_entries[0].vector;
1330
1331 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1332
1333 if (netxen_read_mac_addr(adapter))
1334 dev_warn(&pdev->dev, "failed to read mac addr\n");
1335
1336 netif_carrier_off(netdev);
1337
1338 err = register_netdev(netdev);
1339 if (err) {
1340 dev_err(&pdev->dev, "failed to register net device\n");
1341 return err;
1342 }
1343
1344 return 0;
1345 }
1346
1347 #ifdef CONFIG_PCIEAER
1348 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1349 {
1350 struct pci_dev *pdev = adapter->pdev;
1351 struct pci_dev *root = pdev->bus->self;
1352 u32 aer_pos;
1353
1354 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1355 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1356 return;
1357
1358 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1359 return;
1360
1361 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1362 if (!aer_pos)
1363 return;
1364
1365 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1366 }
1367 #endif
1368
1369 static int __devinit
1370 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1371 {
1372 struct net_device *netdev = NULL;
1373 struct netxen_adapter *adapter = NULL;
1374 int i = 0, err;
1375 int pci_func_id = PCI_FUNC(pdev->devfn);
1376 uint8_t revision_id;
1377 u32 val;
1378
1379 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1380 pr_warning("%s: chip revisions between 0x%x-0x%x "
1381 "will not be enabled.\n",
1382 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1383 return -ENODEV;
1384 }
1385
1386 if ((err = pci_enable_device(pdev)))
1387 return err;
1388
1389 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1390 err = -ENODEV;
1391 goto err_out_disable_pdev;
1392 }
1393
1394 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1395 goto err_out_disable_pdev;
1396
1397 if (NX_IS_REVISION_P3(pdev->revision))
1398 pci_enable_pcie_error_reporting(pdev);
1399
1400 pci_set_master(pdev);
1401
1402 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1403 if(!netdev) {
1404 dev_err(&pdev->dev, "failed to allocate net_device\n");
1405 err = -ENOMEM;
1406 goto err_out_free_res;
1407 }
1408
1409 SET_NETDEV_DEV(netdev, &pdev->dev);
1410
1411 adapter = netdev_priv(netdev);
1412 adapter->netdev = netdev;
1413 adapter->pdev = pdev;
1414 adapter->ahw.pci_func = pci_func_id;
1415
1416 revision_id = pdev->revision;
1417 adapter->ahw.revision_id = revision_id;
1418
1419 rwlock_init(&adapter->ahw.crb_lock);
1420 spin_lock_init(&adapter->ahw.mem_lock);
1421
1422 spin_lock_init(&adapter->tx_clean_lock);
1423 INIT_LIST_HEAD(&adapter->mac_list);
1424 INIT_LIST_HEAD(&adapter->vlan_ip_list);
1425
1426 err = netxen_setup_pci_map(adapter);
1427 if (err)
1428 goto err_out_free_netdev;
1429
1430 /* This will be reset for mezz cards */
1431 adapter->portnum = pci_func_id;
1432
1433 err = netxen_nic_get_board_info(adapter);
1434 if (err) {
1435 dev_err(&pdev->dev, "Error getting board config info.\n");
1436 goto err_out_iounmap;
1437 }
1438
1439 #ifdef CONFIG_PCIEAER
1440 netxen_mask_aer_correctable(adapter);
1441 #endif
1442
1443 /* Mezz cards have PCI function 0,2,3 enabled */
1444 switch (adapter->ahw.board_type) {
1445 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1446 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1447 if (pci_func_id >= 2)
1448 adapter->portnum = pci_func_id - 2;
1449 break;
1450 default:
1451 break;
1452 }
1453
1454 err = netxen_check_flash_fw_compatibility(adapter);
1455 if (err)
1456 goto err_out_iounmap;
1457
1458 if (adapter->portnum == 0) {
1459 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1460 if (val != 0xffffffff && val != 0) {
1461 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1462 adapter->need_fw_reset = 1;
1463 }
1464 }
1465
1466 err = netxen_start_firmware(adapter);
1467 if (err)
1468 goto err_out_decr_ref;
1469
1470 /*
1471 * See if the firmware gave us a virtual-physical port mapping.
1472 */
1473 adapter->physical_port = adapter->portnum;
1474 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1475 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1476 if (i != 0x55555555)
1477 adapter->physical_port = i;
1478 }
1479
1480 netxen_nic_clear_stats(adapter);
1481
1482 netxen_setup_intr(adapter);
1483
1484 err = netxen_setup_netdev(adapter, netdev);
1485 if (err)
1486 goto err_out_disable_msi;
1487
1488 pci_set_drvdata(pdev, adapter);
1489
1490 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1491
1492 switch (adapter->ahw.port_type) {
1493 case NETXEN_NIC_GBE:
1494 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1495 adapter->netdev->name);
1496 break;
1497 case NETXEN_NIC_XGBE:
1498 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1499 adapter->netdev->name);
1500 break;
1501 }
1502
1503 netxen_create_diag_entries(adapter);
1504
1505 return 0;
1506
1507 err_out_disable_msi:
1508 netxen_teardown_intr(adapter);
1509
1510 netxen_free_dummy_dma(adapter);
1511
1512 err_out_decr_ref:
1513 nx_decr_dev_ref_cnt(adapter);
1514
1515 err_out_iounmap:
1516 netxen_cleanup_pci_map(adapter);
1517
1518 err_out_free_netdev:
1519 free_netdev(netdev);
1520
1521 err_out_free_res:
1522 pci_release_regions(pdev);
1523
1524 err_out_disable_pdev:
1525 pci_set_drvdata(pdev, NULL);
1526 pci_disable_device(pdev);
1527 return err;
1528 }
1529
1530 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1531 {
1532 struct netxen_adapter *adapter;
1533 struct net_device *netdev;
1534
1535 adapter = pci_get_drvdata(pdev);
1536 if (adapter == NULL)
1537 return;
1538
1539 netdev = adapter->netdev;
1540
1541 netxen_cancel_fw_work(adapter);
1542
1543 unregister_netdev(netdev);
1544
1545 cancel_work_sync(&adapter->tx_timeout_task);
1546
1547 netxen_free_vlan_ip_list(adapter);
1548 netxen_nic_detach(adapter);
1549
1550 nx_decr_dev_ref_cnt(adapter);
1551
1552 if (adapter->portnum == 0)
1553 netxen_free_dummy_dma(adapter);
1554
1555 clear_bit(__NX_RESETTING, &adapter->state);
1556
1557 netxen_teardown_intr(adapter);
1558
1559 netxen_remove_diag_entries(adapter);
1560
1561 netxen_cleanup_pci_map(adapter);
1562
1563 netxen_release_firmware(adapter);
1564
1565 if (NX_IS_REVISION_P3(pdev->revision))
1566 pci_disable_pcie_error_reporting(pdev);
1567
1568 pci_release_regions(pdev);
1569 pci_disable_device(pdev);
1570 pci_set_drvdata(pdev, NULL);
1571
1572 free_netdev(netdev);
1573 }
1574
1575 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1576 {
1577 struct net_device *netdev = adapter->netdev;
1578
1579 netif_device_detach(netdev);
1580
1581 netxen_cancel_fw_work(adapter);
1582
1583 if (netif_running(netdev))
1584 netxen_nic_down(adapter, netdev);
1585
1586 cancel_work_sync(&adapter->tx_timeout_task);
1587
1588 netxen_nic_detach(adapter);
1589
1590 if (adapter->portnum == 0)
1591 netxen_free_dummy_dma(adapter);
1592
1593 nx_decr_dev_ref_cnt(adapter);
1594
1595 clear_bit(__NX_RESETTING, &adapter->state);
1596 }
1597
1598 static int netxen_nic_attach_func(struct pci_dev *pdev)
1599 {
1600 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1601 struct net_device *netdev = adapter->netdev;
1602 int err;
1603
1604 err = pci_enable_device(pdev);
1605 if (err)
1606 return err;
1607
1608 pci_set_power_state(pdev, PCI_D0);
1609 pci_set_master(pdev);
1610 pci_restore_state(pdev);
1611
1612 adapter->ahw.crb_win = -1;
1613 adapter->ahw.ocm_win = -1;
1614
1615 err = netxen_start_firmware(adapter);
1616 if (err) {
1617 dev_err(&pdev->dev, "failed to start firmware\n");
1618 return err;
1619 }
1620
1621 if (netif_running(netdev)) {
1622 err = netxen_nic_attach(adapter);
1623 if (err)
1624 goto err_out;
1625
1626 err = netxen_nic_up(adapter, netdev);
1627 if (err)
1628 goto err_out_detach;
1629
1630 netxen_restore_indev_addr(netdev, NETDEV_UP);
1631 }
1632
1633 netif_device_attach(netdev);
1634 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1635 return 0;
1636
1637 err_out_detach:
1638 netxen_nic_detach(adapter);
1639 err_out:
1640 nx_decr_dev_ref_cnt(adapter);
1641 return err;
1642 }
1643
1644 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1645 pci_channel_state_t state)
1646 {
1647 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1648
1649 if (state == pci_channel_io_perm_failure)
1650 return PCI_ERS_RESULT_DISCONNECT;
1651
1652 if (nx_dev_request_aer(adapter))
1653 return PCI_ERS_RESULT_RECOVERED;
1654
1655 netxen_nic_detach_func(adapter);
1656
1657 pci_disable_device(pdev);
1658
1659 return PCI_ERS_RESULT_NEED_RESET;
1660 }
1661
1662 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1663 {
1664 int err = 0;
1665
1666 err = netxen_nic_attach_func(pdev);
1667
1668 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1669 }
1670
1671 static void netxen_io_resume(struct pci_dev *pdev)
1672 {
1673 pci_cleanup_aer_uncorrect_error_status(pdev);
1674 }
1675
1676 static void netxen_nic_shutdown(struct pci_dev *pdev)
1677 {
1678 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1679
1680 netxen_nic_detach_func(adapter);
1681
1682 if (pci_save_state(pdev))
1683 return;
1684
1685 if (netxen_nic_wol_supported(adapter)) {
1686 pci_enable_wake(pdev, PCI_D3cold, 1);
1687 pci_enable_wake(pdev, PCI_D3hot, 1);
1688 }
1689
1690 pci_disable_device(pdev);
1691 }
1692
1693 #ifdef CONFIG_PM
1694 static int
1695 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1696 {
1697 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1698 int retval;
1699
1700 netxen_nic_detach_func(adapter);
1701
1702 retval = pci_save_state(pdev);
1703 if (retval)
1704 return retval;
1705
1706 if (netxen_nic_wol_supported(adapter)) {
1707 pci_enable_wake(pdev, PCI_D3cold, 1);
1708 pci_enable_wake(pdev, PCI_D3hot, 1);
1709 }
1710
1711 pci_disable_device(pdev);
1712 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1713
1714 return 0;
1715 }
1716
1717 static int
1718 netxen_nic_resume(struct pci_dev *pdev)
1719 {
1720 return netxen_nic_attach_func(pdev);
1721 }
1722 #endif
1723
1724 static int netxen_nic_open(struct net_device *netdev)
1725 {
1726 struct netxen_adapter *adapter = netdev_priv(netdev);
1727 int err = 0;
1728
1729 if (adapter->driver_mismatch)
1730 return -EIO;
1731
1732 err = netxen_nic_attach(adapter);
1733 if (err)
1734 return err;
1735
1736 err = __netxen_nic_up(adapter, netdev);
1737 if (err)
1738 goto err_out;
1739
1740 netif_start_queue(netdev);
1741
1742 return 0;
1743
1744 err_out:
1745 netxen_nic_detach(adapter);
1746 return err;
1747 }
1748
1749 /*
1750 * netxen_nic_close - Disables a network interface entry point
1751 */
1752 static int netxen_nic_close(struct net_device *netdev)
1753 {
1754 struct netxen_adapter *adapter = netdev_priv(netdev);
1755
1756 __netxen_nic_down(adapter, netdev);
1757 return 0;
1758 }
1759
1760 static void
1761 netxen_tso_check(struct net_device *netdev,
1762 struct nx_host_tx_ring *tx_ring,
1763 struct cmd_desc_type0 *first_desc,
1764 struct sk_buff *skb)
1765 {
1766 u8 opcode = TX_ETHER_PKT;
1767 __be16 protocol = skb->protocol;
1768 u16 flags = 0, vid = 0;
1769 u32 producer;
1770 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1771 struct cmd_desc_type0 *hwdesc;
1772 struct vlan_ethhdr *vh;
1773
1774 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1775
1776 vh = (struct vlan_ethhdr *)skb->data;
1777 protocol = vh->h_vlan_encapsulated_proto;
1778 flags = FLAGS_VLAN_TAGGED;
1779
1780 } else if (vlan_tx_tag_present(skb)) {
1781
1782 flags = FLAGS_VLAN_OOB;
1783 vid = vlan_tx_tag_get(skb);
1784 netxen_set_tx_vlan_tci(first_desc, vid);
1785 vlan_oob = 1;
1786 }
1787
1788 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1789 skb_shinfo(skb)->gso_size > 0) {
1790
1791 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1792
1793 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1794 first_desc->total_hdr_length = hdr_len;
1795 if (vlan_oob) {
1796 first_desc->total_hdr_length += VLAN_HLEN;
1797 first_desc->tcp_hdr_offset = VLAN_HLEN;
1798 first_desc->ip_hdr_offset = VLAN_HLEN;
1799 /* Only in case of TSO on vlan device */
1800 flags |= FLAGS_VLAN_TAGGED;
1801 }
1802
1803 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1804 TX_TCP_LSO6 : TX_TCP_LSO;
1805 tso = 1;
1806
1807 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1808 u8 l4proto;
1809
1810 if (protocol == cpu_to_be16(ETH_P_IP)) {
1811 l4proto = ip_hdr(skb)->protocol;
1812
1813 if (l4proto == IPPROTO_TCP)
1814 opcode = TX_TCP_PKT;
1815 else if(l4proto == IPPROTO_UDP)
1816 opcode = TX_UDP_PKT;
1817 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1818 l4proto = ipv6_hdr(skb)->nexthdr;
1819
1820 if (l4proto == IPPROTO_TCP)
1821 opcode = TX_TCPV6_PKT;
1822 else if(l4proto == IPPROTO_UDP)
1823 opcode = TX_UDPV6_PKT;
1824 }
1825 }
1826
1827 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1828 first_desc->ip_hdr_offset += skb_network_offset(skb);
1829 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1830
1831 if (!tso)
1832 return;
1833
1834 /* For LSO, we need to copy the MAC/IP/TCP headers into
1835 * the descriptor ring
1836 */
1837 producer = tx_ring->producer;
1838 copied = 0;
1839 offset = 2;
1840
1841 if (vlan_oob) {
1842 /* Create a TSO vlan header template for firmware */
1843
1844 hwdesc = &tx_ring->desc_head[producer];
1845 tx_ring->cmd_buf_arr[producer].skb = NULL;
1846
1847 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1848 hdr_len + VLAN_HLEN);
1849
1850 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1851 skb_copy_from_linear_data(skb, vh, 12);
1852 vh->h_vlan_proto = htons(ETH_P_8021Q);
1853 vh->h_vlan_TCI = htons(vid);
1854 skb_copy_from_linear_data_offset(skb, 12,
1855 (char *)vh + 16, copy_len - 16);
1856
1857 copied = copy_len - VLAN_HLEN;
1858 offset = 0;
1859
1860 producer = get_next_index(producer, tx_ring->num_desc);
1861 }
1862
1863 while (copied < hdr_len) {
1864
1865 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1866 (hdr_len - copied));
1867
1868 hwdesc = &tx_ring->desc_head[producer];
1869 tx_ring->cmd_buf_arr[producer].skb = NULL;
1870
1871 skb_copy_from_linear_data_offset(skb, copied,
1872 (char *)hwdesc + offset, copy_len);
1873
1874 copied += copy_len;
1875 offset = 0;
1876
1877 producer = get_next_index(producer, tx_ring->num_desc);
1878 }
1879
1880 tx_ring->producer = producer;
1881 barrier();
1882 }
1883
1884 static int
1885 netxen_map_tx_skb(struct pci_dev *pdev,
1886 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1887 {
1888 struct netxen_skb_frag *nf;
1889 struct skb_frag_struct *frag;
1890 int i, nr_frags;
1891 dma_addr_t map;
1892
1893 nr_frags = skb_shinfo(skb)->nr_frags;
1894 nf = &pbuf->frag_array[0];
1895
1896 map = pci_map_single(pdev, skb->data,
1897 skb_headlen(skb), PCI_DMA_TODEVICE);
1898 if (pci_dma_mapping_error(pdev, map))
1899 goto out_err;
1900
1901 nf->dma = map;
1902 nf->length = skb_headlen(skb);
1903
1904 for (i = 0; i < nr_frags; i++) {
1905 frag = &skb_shinfo(skb)->frags[i];
1906 nf = &pbuf->frag_array[i+1];
1907
1908 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
1909 DMA_TO_DEVICE);
1910 if (dma_mapping_error(&pdev->dev, map))
1911 goto unwind;
1912
1913 nf->dma = map;
1914 nf->length = skb_frag_size(frag);
1915 }
1916
1917 return 0;
1918
1919 unwind:
1920 while (--i >= 0) {
1921 nf = &pbuf->frag_array[i+1];
1922 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1923 }
1924
1925 nf = &pbuf->frag_array[0];
1926 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1927
1928 out_err:
1929 return -ENOMEM;
1930 }
1931
1932 static inline void
1933 netxen_clear_cmddesc(u64 *desc)
1934 {
1935 desc[0] = 0ULL;
1936 desc[2] = 0ULL;
1937 }
1938
1939 static netdev_tx_t
1940 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1941 {
1942 struct netxen_adapter *adapter = netdev_priv(netdev);
1943 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1944 struct netxen_cmd_buffer *pbuf;
1945 struct netxen_skb_frag *buffrag;
1946 struct cmd_desc_type0 *hwdesc, *first_desc;
1947 struct pci_dev *pdev;
1948 int i, k;
1949 int delta = 0;
1950 struct skb_frag_struct *frag;
1951
1952 u32 producer;
1953 int frag_count, no_of_desc;
1954 u32 num_txd = tx_ring->num_desc;
1955
1956 frag_count = skb_shinfo(skb)->nr_frags + 1;
1957
1958 /* 14 frags supported for normal packet and
1959 * 32 frags supported for TSO packet
1960 */
1961 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
1962
1963 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
1964 frag = &skb_shinfo(skb)->frags[i];
1965 delta += skb_frag_size(frag);
1966 }
1967
1968 if (!__pskb_pull_tail(skb, delta))
1969 goto drop_packet;
1970
1971 frag_count = 1 + skb_shinfo(skb)->nr_frags;
1972 }
1973 /* 4 fragments per cmd des */
1974 no_of_desc = (frag_count + 3) >> 2;
1975
1976 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1977 netif_stop_queue(netdev);
1978 smp_mb();
1979 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1980 netif_start_queue(netdev);
1981 else
1982 return NETDEV_TX_BUSY;
1983 }
1984
1985 producer = tx_ring->producer;
1986 pbuf = &tx_ring->cmd_buf_arr[producer];
1987
1988 pdev = adapter->pdev;
1989
1990 if (netxen_map_tx_skb(pdev, skb, pbuf))
1991 goto drop_packet;
1992
1993 pbuf->skb = skb;
1994 pbuf->frag_count = frag_count;
1995
1996 first_desc = hwdesc = &tx_ring->desc_head[producer];
1997 netxen_clear_cmddesc((u64 *)hwdesc);
1998
1999 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2000 netxen_set_tx_port(first_desc, adapter->portnum);
2001
2002 for (i = 0; i < frag_count; i++) {
2003
2004 k = i % 4;
2005
2006 if ((k == 0) && (i > 0)) {
2007 /* move to next desc.*/
2008 producer = get_next_index(producer, num_txd);
2009 hwdesc = &tx_ring->desc_head[producer];
2010 netxen_clear_cmddesc((u64 *)hwdesc);
2011 tx_ring->cmd_buf_arr[producer].skb = NULL;
2012 }
2013
2014 buffrag = &pbuf->frag_array[i];
2015
2016 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2017 switch (k) {
2018 case 0:
2019 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2020 break;
2021 case 1:
2022 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2023 break;
2024 case 2:
2025 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2026 break;
2027 case 3:
2028 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2029 break;
2030 }
2031 }
2032
2033 tx_ring->producer = get_next_index(producer, num_txd);
2034
2035 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2036
2037 adapter->stats.txbytes += skb->len;
2038 adapter->stats.xmitcalled++;
2039
2040 netxen_nic_update_cmd_producer(adapter, tx_ring);
2041
2042 return NETDEV_TX_OK;
2043
2044 drop_packet:
2045 adapter->stats.txdropped++;
2046 dev_kfree_skb_any(skb);
2047 return NETDEV_TX_OK;
2048 }
2049
2050 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2051 {
2052 struct net_device *netdev = adapter->netdev;
2053 uint32_t temp, temp_state, temp_val;
2054 int rv = 0;
2055
2056 temp = NXRD32(adapter, CRB_TEMP_STATE);
2057
2058 temp_state = nx_get_temp_state(temp);
2059 temp_val = nx_get_temp_val(temp);
2060
2061 if (temp_state == NX_TEMP_PANIC) {
2062 printk(KERN_ALERT
2063 "%s: Device temperature %d degrees C exceeds"
2064 " maximum allowed. Hardware has been shut down.\n",
2065 netdev->name, temp_val);
2066 rv = 1;
2067 } else if (temp_state == NX_TEMP_WARN) {
2068 if (adapter->temp == NX_TEMP_NORMAL) {
2069 printk(KERN_ALERT
2070 "%s: Device temperature %d degrees C "
2071 "exceeds operating range."
2072 " Immediate action needed.\n",
2073 netdev->name, temp_val);
2074 }
2075 } else {
2076 if (adapter->temp == NX_TEMP_WARN) {
2077 printk(KERN_INFO
2078 "%s: Device temperature is now %d degrees C"
2079 " in normal range.\n", netdev->name,
2080 temp_val);
2081 }
2082 }
2083 adapter->temp = temp_state;
2084 return rv;
2085 }
2086
2087 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2088 {
2089 struct net_device *netdev = adapter->netdev;
2090
2091 if (adapter->ahw.linkup && !linkup) {
2092 printk(KERN_INFO "%s: %s NIC Link is down\n",
2093 netxen_nic_driver_name, netdev->name);
2094 adapter->ahw.linkup = 0;
2095 if (netif_running(netdev)) {
2096 netif_carrier_off(netdev);
2097 netif_stop_queue(netdev);
2098 }
2099 adapter->link_changed = !adapter->has_link_events;
2100 } else if (!adapter->ahw.linkup && linkup) {
2101 printk(KERN_INFO "%s: %s NIC Link is up\n",
2102 netxen_nic_driver_name, netdev->name);
2103 adapter->ahw.linkup = 1;
2104 if (netif_running(netdev)) {
2105 netif_carrier_on(netdev);
2106 netif_wake_queue(netdev);
2107 }
2108 adapter->link_changed = !adapter->has_link_events;
2109 }
2110 }
2111
2112 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2113 {
2114 u32 val, port, linkup;
2115
2116 port = adapter->physical_port;
2117
2118 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2119 val = NXRD32(adapter, CRB_XG_STATE_P3);
2120 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2121 linkup = (val == XG_LINK_UP_P3);
2122 } else {
2123 val = NXRD32(adapter, CRB_XG_STATE);
2124 val = (val >> port*8) & 0xff;
2125 linkup = (val == XG_LINK_UP);
2126 }
2127
2128 netxen_advert_link_change(adapter, linkup);
2129 }
2130
2131 static void netxen_tx_timeout(struct net_device *netdev)
2132 {
2133 struct netxen_adapter *adapter = netdev_priv(netdev);
2134
2135 if (test_bit(__NX_RESETTING, &adapter->state))
2136 return;
2137
2138 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2139 schedule_work(&adapter->tx_timeout_task);
2140 }
2141
2142 static void netxen_tx_timeout_task(struct work_struct *work)
2143 {
2144 struct netxen_adapter *adapter =
2145 container_of(work, struct netxen_adapter, tx_timeout_task);
2146
2147 if (!netif_running(adapter->netdev))
2148 return;
2149
2150 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2151 return;
2152
2153 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2154 goto request_reset;
2155
2156 rtnl_lock();
2157 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2158 /* try to scrub interrupt */
2159 netxen_napi_disable(adapter);
2160
2161 netxen_napi_enable(adapter);
2162
2163 netif_wake_queue(adapter->netdev);
2164
2165 clear_bit(__NX_RESETTING, &adapter->state);
2166 } else {
2167 clear_bit(__NX_RESETTING, &adapter->state);
2168 if (netxen_nic_reset_context(adapter)) {
2169 rtnl_unlock();
2170 goto request_reset;
2171 }
2172 }
2173 adapter->netdev->trans_start = jiffies;
2174 rtnl_unlock();
2175 return;
2176
2177 request_reset:
2178 adapter->need_fw_reset = 1;
2179 clear_bit(__NX_RESETTING, &adapter->state);
2180 }
2181
2182 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *netdev,
2183 struct rtnl_link_stats64 *stats)
2184 {
2185 struct netxen_adapter *adapter = netdev_priv(netdev);
2186
2187 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2188 stats->tx_packets = adapter->stats.xmitfinished;
2189 stats->rx_bytes = adapter->stats.rxbytes;
2190 stats->tx_bytes = adapter->stats.txbytes;
2191 stats->rx_dropped = adapter->stats.rxdropped;
2192 stats->tx_dropped = adapter->stats.txdropped;
2193
2194 return stats;
2195 }
2196
2197 static irqreturn_t netxen_intr(int irq, void *data)
2198 {
2199 struct nx_host_sds_ring *sds_ring = data;
2200 struct netxen_adapter *adapter = sds_ring->adapter;
2201 u32 status = 0;
2202
2203 status = readl(adapter->isr_int_vec);
2204
2205 if (!(status & adapter->int_vec_bit))
2206 return IRQ_NONE;
2207
2208 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2209 /* check interrupt state machine, to be sure */
2210 status = readl(adapter->crb_int_state_reg);
2211 if (!ISR_LEGACY_INT_TRIGGERED(status))
2212 return IRQ_NONE;
2213
2214 } else {
2215 unsigned long our_int = 0;
2216
2217 our_int = readl(adapter->crb_int_state_reg);
2218
2219 /* not our interrupt */
2220 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2221 return IRQ_NONE;
2222
2223 /* claim interrupt */
2224 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2225
2226 /* clear interrupt */
2227 netxen_nic_disable_int(sds_ring);
2228 }
2229
2230 writel(0xffffffff, adapter->tgt_status_reg);
2231 /* read twice to ensure write is flushed */
2232 readl(adapter->isr_int_vec);
2233 readl(adapter->isr_int_vec);
2234
2235 napi_schedule(&sds_ring->napi);
2236
2237 return IRQ_HANDLED;
2238 }
2239
2240 static irqreturn_t netxen_msi_intr(int irq, void *data)
2241 {
2242 struct nx_host_sds_ring *sds_ring = data;
2243 struct netxen_adapter *adapter = sds_ring->adapter;
2244
2245 /* clear interrupt */
2246 writel(0xffffffff, adapter->tgt_status_reg);
2247
2248 napi_schedule(&sds_ring->napi);
2249 return IRQ_HANDLED;
2250 }
2251
2252 static irqreturn_t netxen_msix_intr(int irq, void *data)
2253 {
2254 struct nx_host_sds_ring *sds_ring = data;
2255
2256 napi_schedule(&sds_ring->napi);
2257 return IRQ_HANDLED;
2258 }
2259
2260 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2261 {
2262 struct nx_host_sds_ring *sds_ring =
2263 container_of(napi, struct nx_host_sds_ring, napi);
2264
2265 struct netxen_adapter *adapter = sds_ring->adapter;
2266
2267 int tx_complete;
2268 int work_done;
2269
2270 tx_complete = netxen_process_cmd_ring(adapter);
2271
2272 work_done = netxen_process_rcv_ring(sds_ring, budget);
2273
2274 if ((work_done < budget) && tx_complete) {
2275 napi_complete(&sds_ring->napi);
2276 if (test_bit(__NX_DEV_UP, &adapter->state))
2277 netxen_nic_enable_int(sds_ring);
2278 }
2279
2280 return work_done;
2281 }
2282
2283 #ifdef CONFIG_NET_POLL_CONTROLLER
2284 static void netxen_nic_poll_controller(struct net_device *netdev)
2285 {
2286 int ring;
2287 struct nx_host_sds_ring *sds_ring;
2288 struct netxen_adapter *adapter = netdev_priv(netdev);
2289 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2290
2291 disable_irq(adapter->irq);
2292 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2293 sds_ring = &recv_ctx->sds_rings[ring];
2294 netxen_intr(adapter->irq, sds_ring);
2295 }
2296 enable_irq(adapter->irq);
2297 }
2298 #endif
2299
2300 static int
2301 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2302 {
2303 int count;
2304 if (netxen_api_lock(adapter))
2305 return -EIO;
2306
2307 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2308
2309 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2310
2311 netxen_api_unlock(adapter);
2312 return count;
2313 }
2314
2315 static int
2316 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2317 {
2318 int count;
2319 if (netxen_api_lock(adapter))
2320 return -EIO;
2321
2322 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2323 WARN_ON(count == 0);
2324
2325 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2326
2327 if (count == 0)
2328 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2329
2330 netxen_api_unlock(adapter);
2331 return count;
2332 }
2333
2334 static int
2335 nx_dev_request_aer(struct netxen_adapter *adapter)
2336 {
2337 u32 state;
2338 int ret = -EINVAL;
2339
2340 if (netxen_api_lock(adapter))
2341 return ret;
2342
2343 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2344
2345 if (state == NX_DEV_NEED_AER)
2346 ret = 0;
2347 else if (state == NX_DEV_READY) {
2348 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2349 ret = 0;
2350 }
2351
2352 netxen_api_unlock(adapter);
2353 return ret;
2354 }
2355
2356 static int
2357 nx_dev_request_reset(struct netxen_adapter *adapter)
2358 {
2359 u32 state;
2360 int ret = -EINVAL;
2361
2362 if (netxen_api_lock(adapter))
2363 return ret;
2364
2365 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2366
2367 if (state == NX_DEV_NEED_RESET)
2368 ret = 0;
2369 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2370 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2371 ret = 0;
2372 }
2373
2374 netxen_api_unlock(adapter);
2375
2376 return ret;
2377 }
2378
2379 static int
2380 netxen_can_start_firmware(struct netxen_adapter *adapter)
2381 {
2382 int count;
2383 int can_start = 0;
2384
2385 if (netxen_api_lock(adapter))
2386 return 0;
2387
2388 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2389
2390 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2391 count = 0;
2392
2393 if (count == 0) {
2394 can_start = 1;
2395 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2396 }
2397
2398 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2399
2400 netxen_api_unlock(adapter);
2401
2402 return can_start;
2403 }
2404
2405 static void
2406 netxen_schedule_work(struct netxen_adapter *adapter,
2407 work_func_t func, int delay)
2408 {
2409 INIT_DELAYED_WORK(&adapter->fw_work, func);
2410 schedule_delayed_work(&adapter->fw_work, delay);
2411 }
2412
2413 static void
2414 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2415 {
2416 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2417 msleep(10);
2418
2419 cancel_delayed_work_sync(&adapter->fw_work);
2420 }
2421
2422 static void
2423 netxen_attach_work(struct work_struct *work)
2424 {
2425 struct netxen_adapter *adapter = container_of(work,
2426 struct netxen_adapter, fw_work.work);
2427 struct net_device *netdev = adapter->netdev;
2428 int err = 0;
2429
2430 if (netif_running(netdev)) {
2431 err = netxen_nic_attach(adapter);
2432 if (err)
2433 goto done;
2434
2435 err = netxen_nic_up(adapter, netdev);
2436 if (err) {
2437 netxen_nic_detach(adapter);
2438 goto done;
2439 }
2440
2441 netxen_restore_indev_addr(netdev, NETDEV_UP);
2442 }
2443
2444 netif_device_attach(netdev);
2445
2446 done:
2447 adapter->fw_fail_cnt = 0;
2448 clear_bit(__NX_RESETTING, &adapter->state);
2449 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2450 }
2451
2452 static void
2453 netxen_fwinit_work(struct work_struct *work)
2454 {
2455 struct netxen_adapter *adapter = container_of(work,
2456 struct netxen_adapter, fw_work.work);
2457 int dev_state;
2458
2459 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2460
2461 switch (dev_state) {
2462 case NX_DEV_COLD:
2463 case NX_DEV_READY:
2464 if (!netxen_start_firmware(adapter)) {
2465 netxen_schedule_work(adapter, netxen_attach_work, 0);
2466 return;
2467 }
2468 break;
2469
2470 case NX_DEV_NEED_RESET:
2471 case NX_DEV_INITALIZING:
2472 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2473 netxen_schedule_work(adapter,
2474 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2475 return;
2476 }
2477
2478 case NX_DEV_FAILED:
2479 default:
2480 nx_incr_dev_ref_cnt(adapter);
2481 break;
2482 }
2483
2484 clear_bit(__NX_RESETTING, &adapter->state);
2485 }
2486
2487 static void
2488 netxen_detach_work(struct work_struct *work)
2489 {
2490 struct netxen_adapter *adapter = container_of(work,
2491 struct netxen_adapter, fw_work.work);
2492 struct net_device *netdev = adapter->netdev;
2493 int ref_cnt, delay;
2494 u32 status;
2495
2496 netif_device_detach(netdev);
2497
2498 netxen_nic_down(adapter, netdev);
2499
2500 rtnl_lock();
2501 netxen_nic_detach(adapter);
2502 rtnl_unlock();
2503
2504 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2505
2506 if (status & NX_RCODE_FATAL_ERROR)
2507 goto err_ret;
2508
2509 if (adapter->temp == NX_TEMP_PANIC)
2510 goto err_ret;
2511
2512 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2513
2514 if (ref_cnt == -EIO)
2515 goto err_ret;
2516
2517 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2518
2519 adapter->fw_wait_cnt = 0;
2520 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2521
2522 return;
2523
2524 err_ret:
2525 clear_bit(__NX_RESETTING, &adapter->state);
2526 }
2527
2528 static int
2529 netxen_check_health(struct netxen_adapter *adapter)
2530 {
2531 u32 state, heartbit;
2532 struct net_device *netdev = adapter->netdev;
2533
2534 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2535 if (state == NX_DEV_NEED_AER)
2536 return 0;
2537
2538 if (netxen_nic_check_temp(adapter))
2539 goto detach;
2540
2541 if (adapter->need_fw_reset) {
2542 if (nx_dev_request_reset(adapter))
2543 return 0;
2544 goto detach;
2545 }
2546
2547 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2548 * 1. Tx timeout 2. Fw hang
2549 * Send request to destroy context in case of tx timeout only
2550 * and doesn't required in case of Fw hang
2551 */
2552 if (state == NX_DEV_NEED_RESET) {
2553 adapter->need_fw_reset = 1;
2554 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2555 goto detach;
2556 }
2557
2558 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2559 return 0;
2560
2561 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2562 if (heartbit != adapter->heartbit) {
2563 adapter->heartbit = heartbit;
2564 adapter->fw_fail_cnt = 0;
2565 if (adapter->need_fw_reset)
2566 goto detach;
2567 return 0;
2568 }
2569
2570 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2571 return 0;
2572
2573 if (nx_dev_request_reset(adapter))
2574 return 0;
2575
2576 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2577
2578 dev_info(&netdev->dev, "firmware hang detected\n");
2579
2580 detach:
2581 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2582 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2583 netxen_schedule_work(adapter, netxen_detach_work, 0);
2584 return 1;
2585 }
2586
2587 static void
2588 netxen_fw_poll_work(struct work_struct *work)
2589 {
2590 struct netxen_adapter *adapter = container_of(work,
2591 struct netxen_adapter, fw_work.work);
2592
2593 if (test_bit(__NX_RESETTING, &adapter->state))
2594 goto reschedule;
2595
2596 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2597 if (!adapter->has_link_events) {
2598
2599 netxen_nic_handle_phy_intr(adapter);
2600
2601 if (adapter->link_changed)
2602 netxen_nic_set_link_parameters(adapter);
2603 }
2604 }
2605
2606 if (netxen_check_health(adapter))
2607 return;
2608
2609 reschedule:
2610 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2611 }
2612
2613 static ssize_t
2614 netxen_store_bridged_mode(struct device *dev,
2615 struct device_attribute *attr, const char *buf, size_t len)
2616 {
2617 struct net_device *net = to_net_dev(dev);
2618 struct netxen_adapter *adapter = netdev_priv(net);
2619 unsigned long new;
2620 int ret = -EINVAL;
2621
2622 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2623 goto err_out;
2624
2625 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2626 goto err_out;
2627
2628 if (strict_strtoul(buf, 2, &new))
2629 goto err_out;
2630
2631 if (!netxen_config_bridged_mode(adapter, !!new))
2632 ret = len;
2633
2634 err_out:
2635 return ret;
2636 }
2637
2638 static ssize_t
2639 netxen_show_bridged_mode(struct device *dev,
2640 struct device_attribute *attr, char *buf)
2641 {
2642 struct net_device *net = to_net_dev(dev);
2643 struct netxen_adapter *adapter;
2644 int bridged_mode = 0;
2645
2646 adapter = netdev_priv(net);
2647
2648 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2649 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2650
2651 return sprintf(buf, "%d\n", bridged_mode);
2652 }
2653
2654 static struct device_attribute dev_attr_bridged_mode = {
2655 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2656 .show = netxen_show_bridged_mode,
2657 .store = netxen_store_bridged_mode,
2658 };
2659
2660 static ssize_t
2661 netxen_store_diag_mode(struct device *dev,
2662 struct device_attribute *attr, const char *buf, size_t len)
2663 {
2664 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2665 unsigned long new;
2666
2667 if (strict_strtoul(buf, 2, &new))
2668 return -EINVAL;
2669
2670 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2671 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2672
2673 return len;
2674 }
2675
2676 static ssize_t
2677 netxen_show_diag_mode(struct device *dev,
2678 struct device_attribute *attr, char *buf)
2679 {
2680 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2681
2682 return sprintf(buf, "%d\n",
2683 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2684 }
2685
2686 static struct device_attribute dev_attr_diag_mode = {
2687 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2688 .show = netxen_show_diag_mode,
2689 .store = netxen_store_diag_mode,
2690 };
2691
2692 static int
2693 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2694 loff_t offset, size_t size)
2695 {
2696 size_t crb_size = 4;
2697
2698 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2699 return -EIO;
2700
2701 if (offset < NETXEN_PCI_CRBSPACE) {
2702 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2703 return -EINVAL;
2704
2705 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2706 NETXEN_PCI_CAMQM_2M_END))
2707 crb_size = 8;
2708 else
2709 return -EINVAL;
2710 }
2711
2712 if ((size != crb_size) || (offset & (crb_size-1)))
2713 return -EINVAL;
2714
2715 return 0;
2716 }
2717
2718 static ssize_t
2719 netxen_sysfs_read_crb(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 u32 data;
2726 u64 qmdata;
2727 int ret;
2728
2729 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2730 if (ret != 0)
2731 return ret;
2732
2733 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2734 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2735 NETXEN_PCI_CAMQM_2M_END)) {
2736 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2737 memcpy(buf, &qmdata, size);
2738 } else {
2739 data = NXRD32(adapter, offset);
2740 memcpy(buf, &data, size);
2741 }
2742
2743 return size;
2744 }
2745
2746 static ssize_t
2747 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2748 struct bin_attribute *attr,
2749 char *buf, loff_t offset, size_t size)
2750 {
2751 struct device *dev = container_of(kobj, struct device, kobj);
2752 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2753 u32 data;
2754 u64 qmdata;
2755 int ret;
2756
2757 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2758 if (ret != 0)
2759 return ret;
2760
2761 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2762 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2763 NETXEN_PCI_CAMQM_2M_END)) {
2764 memcpy(&qmdata, buf, size);
2765 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2766 } else {
2767 memcpy(&data, buf, size);
2768 NXWR32(adapter, offset, data);
2769 }
2770
2771 return size;
2772 }
2773
2774 static int
2775 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2776 loff_t offset, size_t size)
2777 {
2778 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2779 return -EIO;
2780
2781 if ((size != 8) || (offset & 0x7))
2782 return -EIO;
2783
2784 return 0;
2785 }
2786
2787 static ssize_t
2788 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2789 struct bin_attribute *attr,
2790 char *buf, loff_t offset, size_t size)
2791 {
2792 struct device *dev = container_of(kobj, struct device, kobj);
2793 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2794 u64 data;
2795 int ret;
2796
2797 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2798 if (ret != 0)
2799 return ret;
2800
2801 if (adapter->pci_mem_read(adapter, offset, &data))
2802 return -EIO;
2803
2804 memcpy(buf, &data, size);
2805
2806 return size;
2807 }
2808
2809 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2810 struct bin_attribute *attr, char *buf,
2811 loff_t offset, size_t size)
2812 {
2813 struct device *dev = container_of(kobj, struct device, kobj);
2814 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2815 u64 data;
2816 int ret;
2817
2818 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2819 if (ret != 0)
2820 return ret;
2821
2822 memcpy(&data, buf, size);
2823
2824 if (adapter->pci_mem_write(adapter, offset, data))
2825 return -EIO;
2826
2827 return size;
2828 }
2829
2830
2831 static struct bin_attribute bin_attr_crb = {
2832 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2833 .size = 0,
2834 .read = netxen_sysfs_read_crb,
2835 .write = netxen_sysfs_write_crb,
2836 };
2837
2838 static struct bin_attribute bin_attr_mem = {
2839 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2840 .size = 0,
2841 .read = netxen_sysfs_read_mem,
2842 .write = netxen_sysfs_write_mem,
2843 };
2844
2845
2846 static void
2847 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2848 {
2849 struct net_device *netdev = adapter->netdev;
2850 struct device *dev = &netdev->dev;
2851
2852 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2853 /* bridged_mode control */
2854 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2855 dev_warn(&netdev->dev,
2856 "failed to create bridged_mode sysfs entry\n");
2857 }
2858 }
2859 }
2860
2861 static void
2862 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2863 {
2864 struct net_device *netdev = adapter->netdev;
2865 struct device *dev = &netdev->dev;
2866
2867 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2868 device_remove_file(dev, &dev_attr_bridged_mode);
2869 }
2870
2871 static void
2872 netxen_create_diag_entries(struct netxen_adapter *adapter)
2873 {
2874 struct pci_dev *pdev = adapter->pdev;
2875 struct device *dev;
2876
2877 dev = &pdev->dev;
2878 if (device_create_file(dev, &dev_attr_diag_mode))
2879 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2880 if (device_create_bin_file(dev, &bin_attr_crb))
2881 dev_info(dev, "failed to create crb sysfs entry\n");
2882 if (device_create_bin_file(dev, &bin_attr_mem))
2883 dev_info(dev, "failed to create mem sysfs entry\n");
2884 }
2885
2886
2887 static void
2888 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2889 {
2890 struct pci_dev *pdev = adapter->pdev;
2891 struct device *dev = &pdev->dev;
2892
2893 device_remove_file(dev, &dev_attr_diag_mode);
2894 device_remove_bin_file(dev, &bin_attr_crb);
2895 device_remove_bin_file(dev, &bin_attr_mem);
2896 }
2897
2898 #ifdef CONFIG_INET
2899
2900 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2901
2902 static int
2903 netxen_destip_supported(struct netxen_adapter *adapter)
2904 {
2905 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2906 return 0;
2907
2908 if (adapter->ahw.cut_through)
2909 return 0;
2910
2911 return 1;
2912 }
2913
2914 static void
2915 netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
2916 {
2917 struct nx_vlan_ip_list *cur;
2918 struct list_head *head = &adapter->vlan_ip_list;
2919
2920 while (!list_empty(head)) {
2921 cur = list_entry(head->next, struct nx_vlan_ip_list, list);
2922 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
2923 list_del(&cur->list);
2924 kfree(cur);
2925 }
2926
2927 }
2928 static void
2929 netxen_list_config_vlan_ip(struct netxen_adapter *adapter,
2930 struct in_ifaddr *ifa, unsigned long event)
2931 {
2932 struct net_device *dev;
2933 struct nx_vlan_ip_list *cur, *tmp_cur;
2934 struct list_head *head;
2935
2936 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2937
2938 if (dev == NULL)
2939 return;
2940
2941 if (!is_vlan_dev(dev))
2942 return;
2943
2944 switch (event) {
2945 case NX_IP_UP:
2946 list_for_each(head, &adapter->vlan_ip_list) {
2947 cur = list_entry(head, struct nx_vlan_ip_list, list);
2948
2949 if (cur->ip_addr == ifa->ifa_address)
2950 return;
2951 }
2952
2953 cur = kzalloc(sizeof(struct nx_vlan_ip_list), GFP_ATOMIC);
2954 if (cur == NULL) {
2955 printk(KERN_ERR "%s: failed to add vlan ip to list\n",
2956 adapter->netdev->name);
2957 return;
2958 }
2959
2960 cur->ip_addr = ifa->ifa_address;
2961 list_add_tail(&cur->list, &adapter->vlan_ip_list);
2962 break;
2963 case NX_IP_DOWN:
2964 list_for_each_entry_safe(cur, tmp_cur,
2965 &adapter->vlan_ip_list, list) {
2966 if (cur->ip_addr == ifa->ifa_address) {
2967 list_del(&cur->list);
2968 kfree(cur);
2969 break;
2970 }
2971 }
2972 }
2973 }
2974 static void
2975 netxen_config_indev_addr(struct netxen_adapter *adapter,
2976 struct net_device *dev, unsigned long event)
2977 {
2978 struct in_device *indev;
2979
2980 if (!netxen_destip_supported(adapter))
2981 return;
2982
2983 indev = in_dev_get(dev);
2984 if (!indev)
2985 return;
2986
2987 for_ifa(indev) {
2988 switch (event) {
2989 case NETDEV_UP:
2990 netxen_config_ipaddr(adapter,
2991 ifa->ifa_address, NX_IP_UP);
2992 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
2993 break;
2994 case NETDEV_DOWN:
2995 netxen_config_ipaddr(adapter,
2996 ifa->ifa_address, NX_IP_DOWN);
2997 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
2998 break;
2999 default:
3000 break;
3001 }
3002 } endfor_ifa(indev);
3003
3004 in_dev_put(indev);
3005 }
3006
3007 static void
3008 netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3009
3010 {
3011 struct netxen_adapter *adapter = netdev_priv(netdev);
3012 struct nx_vlan_ip_list *pos, *tmp_pos;
3013 unsigned long ip_event;
3014
3015 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3016 netxen_config_indev_addr(adapter, netdev, event);
3017
3018 list_for_each_entry_safe(pos, tmp_pos, &adapter->vlan_ip_list, list) {
3019 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3020 }
3021 }
3022
3023 static int netxen_netdev_event(struct notifier_block *this,
3024 unsigned long event, void *ptr)
3025 {
3026 struct netxen_adapter *adapter;
3027 struct net_device *dev = (struct net_device *)ptr;
3028 struct net_device *orig_dev = dev;
3029
3030 recheck:
3031 if (dev == NULL)
3032 goto done;
3033
3034 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3035 dev = vlan_dev_real_dev(dev);
3036 goto recheck;
3037 }
3038
3039 if (!is_netxen_netdev(dev))
3040 goto done;
3041
3042 adapter = netdev_priv(dev);
3043
3044 if (!adapter)
3045 goto done;
3046
3047 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3048 goto done;
3049
3050 netxen_config_indev_addr(adapter, orig_dev, event);
3051 done:
3052 return NOTIFY_DONE;
3053 }
3054
3055 static int
3056 netxen_inetaddr_event(struct notifier_block *this,
3057 unsigned long event, void *ptr)
3058 {
3059 struct netxen_adapter *adapter;
3060 struct net_device *dev;
3061
3062 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3063
3064 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3065
3066 recheck:
3067 if (dev == NULL)
3068 goto done;
3069
3070 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3071 dev = vlan_dev_real_dev(dev);
3072 goto recheck;
3073 }
3074
3075 if (!is_netxen_netdev(dev))
3076 goto done;
3077
3078 adapter = netdev_priv(dev);
3079
3080 if (!adapter || !netxen_destip_supported(adapter))
3081 goto done;
3082
3083 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3084 goto done;
3085
3086 switch (event) {
3087 case NETDEV_UP:
3088 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3089 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
3090 break;
3091 case NETDEV_DOWN:
3092 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
3093 netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
3094 break;
3095 default:
3096 break;
3097 }
3098
3099 done:
3100 return NOTIFY_DONE;
3101 }
3102
3103 static struct notifier_block netxen_netdev_cb = {
3104 .notifier_call = netxen_netdev_event,
3105 };
3106
3107 static struct notifier_block netxen_inetaddr_cb = {
3108 .notifier_call = netxen_inetaddr_event,
3109 };
3110 #else
3111 static void
3112 netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3113 { }
3114 static void
3115 netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
3116 { }
3117 #endif
3118
3119 static struct pci_error_handlers netxen_err_handler = {
3120 .error_detected = netxen_io_error_detected,
3121 .slot_reset = netxen_io_slot_reset,
3122 .resume = netxen_io_resume,
3123 };
3124
3125 static struct pci_driver netxen_driver = {
3126 .name = netxen_nic_driver_name,
3127 .id_table = netxen_pci_tbl,
3128 .probe = netxen_nic_probe,
3129 .remove = __devexit_p(netxen_nic_remove),
3130 #ifdef CONFIG_PM
3131 .suspend = netxen_nic_suspend,
3132 .resume = netxen_nic_resume,
3133 #endif
3134 .shutdown = netxen_nic_shutdown,
3135 .err_handler = &netxen_err_handler
3136 };
3137
3138 static int __init netxen_init_module(void)
3139 {
3140 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3141
3142 #ifdef CONFIG_INET
3143 register_netdevice_notifier(&netxen_netdev_cb);
3144 register_inetaddr_notifier(&netxen_inetaddr_cb);
3145 #endif
3146 return pci_register_driver(&netxen_driver);
3147 }
3148
3149 module_init(netxen_init_module);
3150
3151 static void __exit netxen_exit_module(void)
3152 {
3153 pci_unregister_driver(&netxen_driver);
3154
3155 #ifdef CONFIG_INET
3156 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3157 unregister_netdevice_notifier(&netxen_netdev_cb);
3158 #endif
3159 }
3160
3161 module_exit(netxen_exit_module);
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