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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / net / ethernet / qlogic / netxen / netxen_nic_main.c
blob70849dea32b1306400822919ca0bd547339cbd4a
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, see <http://www.gnu.org/licenses/>.
18 *
19 * The full GNU General Public License is included in this distribution
20 * in the file called "COPYING".
21 *
22 */
23
24 #include <linux/slab.h>
25 #include <linux/vmalloc.h>
26 #include <linux/interrupt.h>
27 #include "netxen_nic_hw.h"
28
29 #include "netxen_nic.h"
30
31 #include <linux/dma-mapping.h>
32 #include <linux/if_vlan.h>
33 #include <net/ip.h>
34 #include <linux/ipv6.h>
35 #include <linux/inetdevice.h>
36 #include <linux/sysfs.h>
37 #include <linux/aer.h>
38
39 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
40 MODULE_LICENSE("GPL");
41 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
42 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
43
44 char netxen_nic_driver_name[] = "netxen_nic";
45 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
46 NETXEN_NIC_LINUX_VERSIONID;
47
48 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
49
50 /* Default to restricted 1G auto-neg mode */
51 static int wol_port_mode = 5;
52
53 static int use_msi = 1;
54
55 static int use_msi_x = 1;
56
57 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
58 module_param(auto_fw_reset, int, 0644);
59 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
60
61 static int netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63 static void netxen_nic_remove(struct pci_dev *pdev);
64 static int netxen_nic_open(struct net_device *netdev);
65 static int netxen_nic_close(struct net_device *netdev);
66 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
67 struct net_device *);
68 static void netxen_tx_timeout(struct net_device *netdev);
69 static void netxen_tx_timeout_task(struct work_struct *work);
70 static void netxen_fw_poll_work(struct work_struct *work);
71 static void netxen_schedule_work(struct netxen_adapter *adapter,
72 work_func_t func, int delay);
73 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
74 static int netxen_nic_poll(struct napi_struct *napi, int budget);
75 #ifdef CONFIG_NET_POLL_CONTROLLER
76 static void netxen_nic_poll_controller(struct net_device *netdev);
77 #endif
78
79 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
80 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
81 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
82 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
83 static int nx_dev_request_aer(struct netxen_adapter *adapter);
84 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
85 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
86
87 static irqreturn_t netxen_intr(int irq, void *data);
88 static irqreturn_t netxen_msi_intr(int irq, void *data);
89 static irqreturn_t netxen_msix_intr(int irq, void *data);
90
91 static void netxen_free_ip_list(struct netxen_adapter *, bool);
92 static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
93 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *dev,
94 struct rtnl_link_stats64 *stats);
95 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
96
97 /* PCI Device ID Table */
98 #define ENTRY(device) \
99 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
100 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
101
102 static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
103 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
104 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
105 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
106 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
107 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
110 ENTRY(PCI_DEVICE_ID_NX3031),
111 {0,}
112 };
113
114 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
115
116 static uint32_t crb_cmd_producer[4] = {
117 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
118 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
119 };
120
121 void
122 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
123 struct nx_host_tx_ring *tx_ring)
124 {
125 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
126 }
127
128 static uint32_t crb_cmd_consumer[4] = {
129 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
130 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
131 };
132
133 static inline void
134 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
135 struct nx_host_tx_ring *tx_ring)
136 {
137 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
138 }
139
140 static uint32_t msi_tgt_status[8] = {
141 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
142 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
143 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
144 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
145 };
146
147 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
148
149 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
150 {
151 struct netxen_adapter *adapter = sds_ring->adapter;
152
153 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
154 }
155
156 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
157 {
158 struct netxen_adapter *adapter = sds_ring->adapter;
159
160 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
161
162 if (!NETXEN_IS_MSI_FAMILY(adapter))
163 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
164 }
165
166 static int
167 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
168 {
169 int size = sizeof(struct nx_host_sds_ring) * count;
170
171 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
172
173 return recv_ctx->sds_rings == NULL;
174 }
175
176 static void
177 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
178 {
179 if (recv_ctx->sds_rings != NULL)
180 kfree(recv_ctx->sds_rings);
181
182 recv_ctx->sds_rings = NULL;
183 }
184
185 static int
186 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
187 {
188 int ring;
189 struct nx_host_sds_ring *sds_ring;
190 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
191
192 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
193 return -ENOMEM;
194
195 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
196 sds_ring = &recv_ctx->sds_rings[ring];
197 netif_napi_add(netdev, &sds_ring->napi,
198 netxen_nic_poll, NAPI_POLL_WEIGHT);
199 }
200
201 return 0;
202 }
203
204 static void
205 netxen_napi_del(struct netxen_adapter *adapter)
206 {
207 int ring;
208 struct nx_host_sds_ring *sds_ring;
209 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
210
211 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
212 sds_ring = &recv_ctx->sds_rings[ring];
213 netif_napi_del(&sds_ring->napi);
214 }
215
216 netxen_free_sds_rings(&adapter->recv_ctx);
217 }
218
219 static void
220 netxen_napi_enable(struct netxen_adapter *adapter)
221 {
222 int ring;
223 struct nx_host_sds_ring *sds_ring;
224 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
225
226 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
227 sds_ring = &recv_ctx->sds_rings[ring];
228 napi_enable(&sds_ring->napi);
229 netxen_nic_enable_int(sds_ring);
230 }
231 }
232
233 static void
234 netxen_napi_disable(struct netxen_adapter *adapter)
235 {
236 int ring;
237 struct nx_host_sds_ring *sds_ring;
238 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
239
240 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
241 sds_ring = &recv_ctx->sds_rings[ring];
242 netxen_nic_disable_int(sds_ring);
243 napi_synchronize(&sds_ring->napi);
244 napi_disable(&sds_ring->napi);
245 }
246 }
247
248 static int nx_set_dma_mask(struct netxen_adapter *adapter)
249 {
250 struct pci_dev *pdev = adapter->pdev;
251 uint64_t mask, cmask;
252
253 adapter->pci_using_dac = 0;
254
255 mask = DMA_BIT_MASK(32);
256 cmask = DMA_BIT_MASK(32);
257
258 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
259 #ifndef CONFIG_IA64
260 mask = DMA_BIT_MASK(35);
261 #endif
262 } else {
263 mask = DMA_BIT_MASK(39);
264 cmask = mask;
265 }
266
267 if (pci_set_dma_mask(pdev, mask) == 0 &&
268 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
269 adapter->pci_using_dac = 1;
270 return 0;
271 }
272
273 return -EIO;
274 }
275
276 /* Update addressable range if firmware supports it */
277 static int
278 nx_update_dma_mask(struct netxen_adapter *adapter)
279 {
280 int change, shift, err;
281 uint64_t mask, old_mask, old_cmask;
282 struct pci_dev *pdev = adapter->pdev;
283
284 change = 0;
285
286 shift = NXRD32(adapter, CRB_DMA_SHIFT);
287 if (shift > 32)
288 return 0;
289
290 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
291 change = 1;
292 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
293 change = 1;
294
295 if (change) {
296 old_mask = pdev->dma_mask;
297 old_cmask = pdev->dev.coherent_dma_mask;
298
299 mask = DMA_BIT_MASK(32+shift);
300
301 err = pci_set_dma_mask(pdev, mask);
302 if (err)
303 goto err_out;
304
305 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
306
307 err = pci_set_consistent_dma_mask(pdev, mask);
308 if (err)
309 goto err_out;
310 }
311 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
312 }
313
314 return 0;
315
316 err_out:
317 pci_set_dma_mask(pdev, old_mask);
318 pci_set_consistent_dma_mask(pdev, old_cmask);
319 return err;
320 }
321
322 static int
323 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
324 {
325 u32 val, timeout;
326
327 if (first_boot == 0x55555555) {
328 /* This is the first boot after power up */
329 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
330
331 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
332 return 0;
333
334 /* PCI bus master workaround */
335 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
336 if (!(first_boot & 0x4)) {
337 first_boot |= 0x4;
338 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
339 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
340 }
341
342 /* This is the first boot after power up */
343 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
344 if (first_boot != 0x80000f) {
345 /* clear the register for future unloads/loads */
346 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
347 return -EIO;
348 }
349
350 /* Start P2 boot loader */
351 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
352 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
353 timeout = 0;
354 do {
355 msleep(1);
356 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
357
358 if (++timeout > 5000)
359 return -EIO;
360
361 } while (val == NETXEN_BDINFO_MAGIC);
362 }
363 return 0;
364 }
365
366 static void netxen_set_port_mode(struct netxen_adapter *adapter)
367 {
368 u32 val, data;
369
370 val = adapter->ahw.board_type;
371 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
372 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
373 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
374 data = NETXEN_PORT_MODE_802_3_AP;
375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
376 } else if (port_mode == NETXEN_PORT_MODE_XG) {
377 data = NETXEN_PORT_MODE_XG;
378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
379 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
380 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
382 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
383 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
384 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
385 } else {
386 data = NETXEN_PORT_MODE_AUTO_NEG;
387 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
388 }
389
390 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
391 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
392 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
393 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
394 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
395 }
396 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
397 }
398 }
399
400 #define PCI_CAP_ID_GEN 0x10
401
402 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
403 {
404 u32 pdevfuncsave;
405 u32 c8c9value = 0;
406 u32 chicken = 0;
407 u32 control = 0;
408 int i, pos;
409 struct pci_dev *pdev;
410
411 pdev = adapter->pdev;
412
413 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
414 /* clear chicken3.25:24 */
415 chicken &= 0xFCFFFFFF;
416 /*
417 * if gen1 and B0, set F1020 - if gen 2, do nothing
418 * if gen2 set to F1000
419 */
420 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
421 if (pos == 0xC0) {
422 pci_read_config_dword(pdev, pos + 0x10, &control);
423 if ((control & 0x000F0000) != 0x00020000) {
424 /* set chicken3.24 if gen1 */
425 chicken |= 0x01000000;
426 }
427 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
428 c8c9value = 0xF1000;
429 } else {
430 /* set chicken3.24 if gen1 */
431 chicken |= 0x01000000;
432 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
433 if (adapter->ahw.revision_id == NX_P3_B0)
434 c8c9value = 0xF1020;
435 else
436 c8c9value = 0;
437 }
438
439 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
440
441 if (!c8c9value)
442 return;
443
444 pdevfuncsave = pdev->devfn;
445 if (pdevfuncsave & 0x07)
446 return;
447
448 for (i = 0; i < 8; i++) {
449 pci_read_config_dword(pdev, pos + 8, &control);
450 pci_read_config_dword(pdev, pos + 8, &control);
451 pci_write_config_dword(pdev, pos + 8, c8c9value);
452 pdev->devfn++;
453 }
454 pdev->devfn = pdevfuncsave;
455 }
456
457 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
458 {
459 u32 control;
460
461 if (pdev->msix_cap) {
462 pci_read_config_dword(pdev, pdev->msix_cap, &control);
463 if (enable)
464 control |= PCI_MSIX_FLAGS_ENABLE;
465 else
466 control = 0;
467 pci_write_config_dword(pdev, pdev->msix_cap, control);
468 }
469 }
470
471 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
472 {
473 int i;
474
475 for (i = 0; i < count; i++)
476 adapter->msix_entries[i].entry = i;
477 }
478
479 static int
480 netxen_read_mac_addr(struct netxen_adapter *adapter)
481 {
482 int i;
483 unsigned char *p;
484 u64 mac_addr;
485 struct net_device *netdev = adapter->netdev;
486 struct pci_dev *pdev = adapter->pdev;
487
488 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
489 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
490 return -EIO;
491 } else {
492 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
493 return -EIO;
494 }
495
496 p = (unsigned char *)&mac_addr;
497 for (i = 0; i < 6; i++)
498 netdev->dev_addr[i] = *(p + 5 - i);
499
500 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
501
502 /* set station address */
503
504 if (!is_valid_ether_addr(netdev->dev_addr))
505 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
506
507 return 0;
508 }
509
510 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
511 {
512 struct netxen_adapter *adapter = netdev_priv(netdev);
513 struct sockaddr *addr = p;
514
515 if (!is_valid_ether_addr(addr->sa_data))
516 return -EADDRNOTAVAIL;
517
518 if (netif_running(netdev)) {
519 netif_device_detach(netdev);
520 netxen_napi_disable(adapter);
521 }
522
523 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
524 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
525 adapter->macaddr_set(adapter, addr->sa_data);
526
527 if (netif_running(netdev)) {
528 netif_device_attach(netdev);
529 netxen_napi_enable(adapter);
530 }
531 return 0;
532 }
533
534 static void netxen_set_multicast_list(struct net_device *dev)
535 {
536 struct netxen_adapter *adapter = netdev_priv(dev);
537
538 adapter->set_multi(dev);
539 }
540
541 static netdev_features_t netxen_fix_features(struct net_device *dev,
542 netdev_features_t features)
543 {
544 if (!(features & NETIF_F_RXCSUM)) {
545 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
546
547 features &= ~NETIF_F_LRO;
548 }
549
550 return features;
551 }
552
553 static int netxen_set_features(struct net_device *dev,
554 netdev_features_t features)
555 {
556 struct netxen_adapter *adapter = netdev_priv(dev);
557 int hw_lro;
558
559 if (!((dev->features ^ features) & NETIF_F_LRO))
560 return 0;
561
562 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
563 : NETXEN_NIC_LRO_DISABLED;
564
565 if (netxen_config_hw_lro(adapter, hw_lro))
566 return -EIO;
567
568 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
569 return -EIO;
570
571 return 0;
572 }
573
574 static const struct net_device_ops netxen_netdev_ops = {
575 .ndo_open = netxen_nic_open,
576 .ndo_stop = netxen_nic_close,
577 .ndo_start_xmit = netxen_nic_xmit_frame,
578 .ndo_get_stats64 = netxen_nic_get_stats,
579 .ndo_validate_addr = eth_validate_addr,
580 .ndo_set_rx_mode = netxen_set_multicast_list,
581 .ndo_set_mac_address = netxen_nic_set_mac,
582 .ndo_change_mtu = netxen_nic_change_mtu,
583 .ndo_tx_timeout = netxen_tx_timeout,
584 .ndo_fix_features = netxen_fix_features,
585 .ndo_set_features = netxen_set_features,
586 #ifdef CONFIG_NET_POLL_CONTROLLER
587 .ndo_poll_controller = netxen_nic_poll_controller,
588 #endif
589 };
590
591 static inline bool netxen_function_zero(struct pci_dev *pdev)
592 {
593 return (PCI_FUNC(pdev->devfn) == 0) ? true : false;
594 }
595
596 static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
597 u32 mode)
598 {
599 NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
600 }
601
602 static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
603 {
604 return NXRD32(adapter, NETXEN_INTR_MODE_REG);
605 }
606
607 static void
608 netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
609 {
610 struct netxen_legacy_intr_set *legacy_intrp;
611 u32 tgt_status_reg, int_state_reg;
612
613 if (adapter->ahw.revision_id >= NX_P3_B0)
614 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
615 else
616 legacy_intrp = &legacy_intr[0];
617
618 tgt_status_reg = legacy_intrp->tgt_status_reg;
619 int_state_reg = ISR_INT_STATE_REG;
620
621 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
622 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
623 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
624 legacy_intrp->tgt_mask_reg);
625 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
626 legacy_intrp->pci_int_reg);
627 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
628
629 if (adapter->ahw.revision_id >= NX_P3_B1)
630 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
631 int_state_reg);
632 else
633 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
634 CRB_INT_VECTOR);
635 }
636
637 static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
638 int num_msix)
639 {
640 struct pci_dev *pdev = adapter->pdev;
641 u32 value;
642 int err;
643
644 if (adapter->msix_supported) {
645 netxen_init_msix_entries(adapter, num_msix);
646 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
647 if (err == 0) {
648 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
649 netxen_set_msix_bit(pdev, 1);
650
651 if (adapter->rss_supported)
652 adapter->max_sds_rings = num_msix;
653
654 dev_info(&pdev->dev, "using msi-x interrupts\n");
655 return 0;
656 }
657 /* fall through for msi */
658 }
659
660 if (use_msi && !pci_enable_msi(pdev)) {
661 value = msi_tgt_status[adapter->ahw.pci_func];
662 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
663 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
664 adapter->msix_entries[0].vector = pdev->irq;
665 dev_info(&pdev->dev, "using msi interrupts\n");
666 return 0;
667 }
668
669 dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
670 return -EIO;
671 }
672
673 static int netxen_setup_intr(struct netxen_adapter *adapter)
674 {
675 struct pci_dev *pdev = adapter->pdev;
676 int num_msix;
677
678 if (adapter->rss_supported)
679 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
680 MSIX_ENTRIES_PER_ADAPTER : 2;
681 else
682 num_msix = 1;
683
684 adapter->max_sds_rings = 1;
685 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
686
687 netxen_initialize_interrupt_registers(adapter);
688 netxen_set_msix_bit(pdev, 0);
689
690 if (netxen_function_zero(pdev)) {
691 if (!netxen_setup_msi_interrupts(adapter, num_msix))
692 netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
693 else
694 netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
695 } else {
696 if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
697 netxen_setup_msi_interrupts(adapter, num_msix)) {
698 dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
699 return -EIO;
700 }
701 }
702
703 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
704 adapter->msix_entries[0].vector = pdev->irq;
705 dev_info(&pdev->dev, "using legacy interrupts\n");
706 }
707 return 0;
708 }
709
710 static void
711 netxen_teardown_intr(struct netxen_adapter *adapter)
712 {
713 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
714 pci_disable_msix(adapter->pdev);
715 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
716 pci_disable_msi(adapter->pdev);
717 }
718
719 static void
720 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
721 {
722 if (adapter->ahw.db_base != NULL)
723 iounmap(adapter->ahw.db_base);
724 if (adapter->ahw.pci_base0 != NULL)
725 iounmap(adapter->ahw.pci_base0);
726 if (adapter->ahw.pci_base1 != NULL)
727 iounmap(adapter->ahw.pci_base1);
728 if (adapter->ahw.pci_base2 != NULL)
729 iounmap(adapter->ahw.pci_base2);
730 }
731
732 static int
733 netxen_setup_pci_map(struct netxen_adapter *adapter)
734 {
735 void __iomem *db_ptr = NULL;
736
737 resource_size_t mem_base, db_base;
738 unsigned long mem_len, db_len = 0;
739
740 struct pci_dev *pdev = adapter->pdev;
741 int pci_func = adapter->ahw.pci_func;
742 struct netxen_hardware_context *ahw = &adapter->ahw;
743
744 int err = 0;
745
746 /*
747 * Set the CRB window to invalid. If any register in window 0 is
748 * accessed it should set the window to 0 and then reset it to 1.
749 */
750 adapter->ahw.crb_win = -1;
751 adapter->ahw.ocm_win = -1;
752
753 /* remap phys address */
754 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
755 mem_len = pci_resource_len(pdev, 0);
756
757 /* 128 Meg of memory */
758 if (mem_len == NETXEN_PCI_128MB_SIZE) {
759
760 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
761 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
762 SECOND_PAGE_GROUP_SIZE);
763 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
764 THIRD_PAGE_GROUP_SIZE);
765 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
766 ahw->pci_base2 == NULL) {
767 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
768 err = -EIO;
769 goto err_out;
770 }
771
772 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
773
774 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
775
776 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
777 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
778 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
779 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
780 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
781 err = -EIO;
782 goto err_out;
783 }
784
785 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
786
787 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
788 if (ahw->pci_base0 == NULL) {
789 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
790 return -EIO;
791 }
792 ahw->pci_len0 = mem_len;
793 } else {
794 return -EIO;
795 }
796
797 netxen_setup_hwops(adapter);
798
799 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
800
801 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
802 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
803 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
804
805 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
806 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
807 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
808 }
809
810 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
811 goto skip_doorbell;
812
813 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
814 db_len = pci_resource_len(pdev, 4);
815
816 if (db_len == 0) {
817 printk(KERN_ERR "%s: doorbell is disabled\n",
818 netxen_nic_driver_name);
819 err = -EIO;
820 goto err_out;
821 }
822
823 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
824 if (!db_ptr) {
825 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
826 netxen_nic_driver_name);
827 err = -EIO;
828 goto err_out;
829 }
830
831 skip_doorbell:
832 adapter->ahw.db_base = db_ptr;
833 adapter->ahw.db_len = db_len;
834 return 0;
835
836 err_out:
837 netxen_cleanup_pci_map(adapter);
838 return err;
839 }
840
841 static void
842 netxen_check_options(struct netxen_adapter *adapter)
843 {
844 u32 fw_major, fw_minor, fw_build, prev_fw_version;
845 char brd_name[NETXEN_MAX_SHORT_NAME];
846 char serial_num[32];
847 int i, offset, val, err;
848 __le32 *ptr32;
849 struct pci_dev *pdev = adapter->pdev;
850
851 adapter->driver_mismatch = 0;
852
853 ptr32 = (__le32 *)&serial_num;
854 offset = NX_FW_SERIAL_NUM_OFFSET;
855 for (i = 0; i < 8; i++) {
856 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
857 dev_err(&pdev->dev, "error reading board info\n");
858 adapter->driver_mismatch = 1;
859 return;
860 }
861 ptr32[i] = cpu_to_le32(val);
862 offset += sizeof(u32);
863 }
864
865 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
866 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
867 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
868 prev_fw_version = adapter->fw_version;
869 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
870
871 /* Get FW Mini Coredump template and store it */
872 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
873 if (adapter->mdump.md_template == NULL ||
874 adapter->fw_version > prev_fw_version) {
875 kfree(adapter->mdump.md_template);
876 adapter->mdump.md_template = NULL;
877 err = netxen_setup_minidump(adapter);
878 if (err)
879 dev_err(&adapter->pdev->dev,
880 "Failed to setup minidump rcode = %d\n", err);
881 }
882 }
883
884 if (adapter->portnum == 0) {
885 if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
886 brd_name))
887 strcpy(serial_num, "Unknown");
888
889 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
890 module_name(THIS_MODULE),
891 brd_name, serial_num, adapter->ahw.revision_id);
892 }
893
894 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
895 adapter->driver_mismatch = 1;
896 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
897 fw_major, fw_minor, fw_build);
898 return;
899 }
900
901 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
902 i = NXRD32(adapter, NETXEN_SRE_MISC);
903 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
904 }
905
906 dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
907 NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
908 adapter->ahw.cut_through ? "cut-through" : "legacy");
909
910 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
911 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
912
913 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
914 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
915 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
916 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
917 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
918 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
919 }
920
921 adapter->msix_supported = 0;
922 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
923 adapter->msix_supported = !!use_msi_x;
924 adapter->rss_supported = !!use_msi_x;
925 } else {
926 u32 flashed_ver = 0;
927 netxen_rom_fast_read(adapter,
928 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
929 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
930
931 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
932 switch (adapter->ahw.board_type) {
933 case NETXEN_BRDTYPE_P2_SB31_10G:
934 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
935 adapter->msix_supported = !!use_msi_x;
936 adapter->rss_supported = !!use_msi_x;
937 break;
938 default:
939 break;
940 }
941 }
942 }
943
944 adapter->num_txd = MAX_CMD_DESCRIPTORS;
945
946 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
947 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
948 adapter->max_rds_rings = 3;
949 } else {
950 adapter->num_lro_rxd = 0;
951 adapter->max_rds_rings = 2;
952 }
953 }
954
955 static int
956 netxen_start_firmware(struct netxen_adapter *adapter)
957 {
958 int val, err, first_boot;
959 struct pci_dev *pdev = adapter->pdev;
960
961 /* required for NX2031 dummy dma */
962 err = nx_set_dma_mask(adapter);
963 if (err)
964 return err;
965
966 err = netxen_can_start_firmware(adapter);
967
968 if (err < 0)
969 return err;
970
971 if (!err)
972 goto wait_init;
973
974 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
975
976 err = netxen_check_hw_init(adapter, first_boot);
977 if (err) {
978 dev_err(&pdev->dev, "error in init HW init sequence\n");
979 return err;
980 }
981
982 netxen_request_firmware(adapter);
983
984 err = netxen_need_fw_reset(adapter);
985 if (err < 0)
986 goto err_out;
987 if (err == 0)
988 goto pcie_strap_init;
989
990 if (first_boot != 0x55555555) {
991 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
992 netxen_pinit_from_rom(adapter);
993 msleep(1);
994 }
995
996 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
997 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
998 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
999
1000 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1001 netxen_set_port_mode(adapter);
1002
1003 err = netxen_load_firmware(adapter);
1004 if (err)
1005 goto err_out;
1006
1007 netxen_release_firmware(adapter);
1008
1009 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1010
1011 /* Initialize multicast addr pool owners */
1012 val = 0x7654;
1013 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
1014 val |= 0x0f000000;
1015 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
1016
1017 }
1018
1019 err = netxen_init_dummy_dma(adapter);
1020 if (err)
1021 goto err_out;
1022
1023 /*
1024 * Tell the hardware our version number.
1025 */
1026 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
1027 | ((_NETXEN_NIC_LINUX_MINOR << 8))
1028 | (_NETXEN_NIC_LINUX_SUBVERSION);
1029 NXWR32(adapter, CRB_DRIVER_VERSION, val);
1030
1031 pcie_strap_init:
1032 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1033 netxen_pcie_strap_init(adapter);
1034
1035 wait_init:
1036 /* Handshake with the card before we register the devices. */
1037 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
1038 if (err) {
1039 netxen_free_dummy_dma(adapter);
1040 goto err_out;
1041 }
1042
1043 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1044
1045 nx_update_dma_mask(adapter);
1046
1047 netxen_check_options(adapter);
1048
1049 adapter->need_fw_reset = 0;
1050
1051 /* fall through and release firmware */
1052
1053 err_out:
1054 netxen_release_firmware(adapter);
1055 return err;
1056 }
1057
1058 static int
1059 netxen_nic_request_irq(struct netxen_adapter *adapter)
1060 {
1061 irq_handler_t handler;
1062 struct nx_host_sds_ring *sds_ring;
1063 int err, ring;
1064
1065 unsigned long flags = 0;
1066 struct net_device *netdev = adapter->netdev;
1067 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1068
1069 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1070 handler = netxen_msix_intr;
1071 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1072 handler = netxen_msi_intr;
1073 else {
1074 flags |= IRQF_SHARED;
1075 handler = netxen_intr;
1076 }
1077 adapter->irq = netdev->irq;
1078
1079 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1080 sds_ring = &recv_ctx->sds_rings[ring];
1081 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1082 err = request_irq(sds_ring->irq, handler,
1083 flags, sds_ring->name, sds_ring);
1084 if (err)
1085 return err;
1086 }
1087
1088 return 0;
1089 }
1090
1091 static void
1092 netxen_nic_free_irq(struct netxen_adapter *adapter)
1093 {
1094 int ring;
1095 struct nx_host_sds_ring *sds_ring;
1096
1097 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1098
1099 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1100 sds_ring = &recv_ctx->sds_rings[ring];
1101 free_irq(sds_ring->irq, sds_ring);
1102 }
1103 }
1104
1105 static void
1106 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1107 {
1108 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1109 adapter->coal.normal.data.rx_time_us =
1110 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1111 adapter->coal.normal.data.rx_packets =
1112 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1113 adapter->coal.normal.data.tx_time_us =
1114 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1115 adapter->coal.normal.data.tx_packets =
1116 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1117 }
1118
1119 /* with rtnl_lock */
1120 static int
1121 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1122 {
1123 int err;
1124
1125 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1126 return -EIO;
1127
1128 err = adapter->init_port(adapter, adapter->physical_port);
1129 if (err) {
1130 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1131 netxen_nic_driver_name, adapter->portnum);
1132 return err;
1133 }
1134 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1135 adapter->macaddr_set(adapter, adapter->mac_addr);
1136
1137 adapter->set_multi(netdev);
1138 adapter->set_mtu(adapter, netdev->mtu);
1139
1140 adapter->ahw.linkup = 0;
1141
1142 if (adapter->max_sds_rings > 1)
1143 netxen_config_rss(adapter, 1);
1144
1145 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1146 netxen_config_intr_coalesce(adapter);
1147
1148 if (netdev->features & NETIF_F_LRO)
1149 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1150
1151 netxen_napi_enable(adapter);
1152
1153 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1154 netxen_linkevent_request(adapter, 1);
1155 else
1156 netxen_nic_set_link_parameters(adapter);
1157
1158 set_bit(__NX_DEV_UP, &adapter->state);
1159 return 0;
1160 }
1161
1162 /* Usage: During resume and firmware recovery module.*/
1163
1164 static inline int
1165 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1166 {
1167 int err = 0;
1168
1169 rtnl_lock();
1170 if (netif_running(netdev))
1171 err = __netxen_nic_up(adapter, netdev);
1172 rtnl_unlock();
1173
1174 return err;
1175 }
1176
1177 /* with rtnl_lock */
1178 static void
1179 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1180 {
1181 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1182 return;
1183
1184 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1185 return;
1186
1187 smp_mb();
1188 spin_lock(&adapter->tx_clean_lock);
1189 netif_carrier_off(netdev);
1190 netif_tx_disable(netdev);
1191
1192 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1193 netxen_linkevent_request(adapter, 0);
1194
1195 if (adapter->stop_port)
1196 adapter->stop_port(adapter);
1197
1198 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1199 netxen_p3_free_mac_list(adapter);
1200
1201 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1202
1203 netxen_napi_disable(adapter);
1204
1205 netxen_release_tx_buffers(adapter);
1206 spin_unlock(&adapter->tx_clean_lock);
1207 }
1208
1209 /* Usage: During suspend and firmware recovery module */
1210
1211 static inline void
1212 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1213 {
1214 rtnl_lock();
1215 if (netif_running(netdev))
1216 __netxen_nic_down(adapter, netdev);
1217 rtnl_unlock();
1218
1219 }
1220
1221 static int
1222 netxen_nic_attach(struct netxen_adapter *adapter)
1223 {
1224 struct net_device *netdev = adapter->netdev;
1225 struct pci_dev *pdev = adapter->pdev;
1226 int err, ring;
1227 struct nx_host_rds_ring *rds_ring;
1228 struct nx_host_tx_ring *tx_ring;
1229 u32 capab2;
1230
1231 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1232 return 0;
1233
1234 err = netxen_init_firmware(adapter);
1235 if (err)
1236 return err;
1237
1238 adapter->flags &= ~NETXEN_FW_MSS_CAP;
1239 if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1240 capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1241 if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1242 adapter->flags |= NETXEN_FW_MSS_CAP;
1243 }
1244
1245 err = netxen_napi_add(adapter, netdev);
1246 if (err)
1247 return err;
1248
1249 err = netxen_alloc_sw_resources(adapter);
1250 if (err) {
1251 printk(KERN_ERR "%s: Error in setting sw resources\n",
1252 netdev->name);
1253 return err;
1254 }
1255
1256 err = netxen_alloc_hw_resources(adapter);
1257 if (err) {
1258 printk(KERN_ERR "%s: Error in setting hw resources\n",
1259 netdev->name);
1260 goto err_out_free_sw;
1261 }
1262
1263 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1264 tx_ring = adapter->tx_ring;
1265 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1266 crb_cmd_producer[adapter->portnum]);
1267 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1268 crb_cmd_consumer[adapter->portnum]);
1269
1270 tx_ring->producer = 0;
1271 tx_ring->sw_consumer = 0;
1272
1273 netxen_nic_update_cmd_producer(adapter, tx_ring);
1274 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1275 }
1276
1277 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1278 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1279 netxen_post_rx_buffers(adapter, ring, rds_ring);
1280 }
1281
1282 err = netxen_nic_request_irq(adapter);
1283 if (err) {
1284 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1285 netdev->name);
1286 goto err_out_free_rxbuf;
1287 }
1288
1289 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1290 netxen_nic_init_coalesce_defaults(adapter);
1291
1292 netxen_create_sysfs_entries(adapter);
1293
1294 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1295 return 0;
1296
1297 err_out_free_rxbuf:
1298 netxen_release_rx_buffers(adapter);
1299 netxen_free_hw_resources(adapter);
1300 err_out_free_sw:
1301 netxen_free_sw_resources(adapter);
1302 return err;
1303 }
1304
1305 static void
1306 netxen_nic_detach(struct netxen_adapter *adapter)
1307 {
1308 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1309 return;
1310
1311 netxen_remove_sysfs_entries(adapter);
1312
1313 netxen_free_hw_resources(adapter);
1314 netxen_release_rx_buffers(adapter);
1315 netxen_nic_free_irq(adapter);
1316 netxen_napi_del(adapter);
1317 netxen_free_sw_resources(adapter);
1318
1319 adapter->is_up = 0;
1320 }
1321
1322 int
1323 netxen_nic_reset_context(struct netxen_adapter *adapter)
1324 {
1325 int err = 0;
1326 struct net_device *netdev = adapter->netdev;
1327
1328 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1329 return -EBUSY;
1330
1331 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1332
1333 netif_device_detach(netdev);
1334
1335 if (netif_running(netdev))
1336 __netxen_nic_down(adapter, netdev);
1337
1338 netxen_nic_detach(adapter);
1339
1340 if (netif_running(netdev)) {
1341 err = netxen_nic_attach(adapter);
1342 if (!err)
1343 err = __netxen_nic_up(adapter, netdev);
1344
1345 if (err)
1346 goto done;
1347 }
1348
1349 netif_device_attach(netdev);
1350 }
1351
1352 done:
1353 clear_bit(__NX_RESETTING, &adapter->state);
1354 return err;
1355 }
1356
1357 static int
1358 netxen_setup_netdev(struct netxen_adapter *adapter,
1359 struct net_device *netdev)
1360 {
1361 int err = 0;
1362 struct pci_dev *pdev = adapter->pdev;
1363
1364 adapter->mc_enabled = 0;
1365 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1366 adapter->max_mc_count = 38;
1367 else
1368 adapter->max_mc_count = 16;
1369
1370 netdev->netdev_ops = &netxen_netdev_ops;
1371 netdev->watchdog_timeo = 5*HZ;
1372
1373 netxen_nic_change_mtu(netdev, netdev->mtu);
1374
1375 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1376
1377 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1378 NETIF_F_RXCSUM;
1379
1380 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1381 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1382
1383 netdev->vlan_features |= netdev->hw_features;
1384
1385 if (adapter->pci_using_dac) {
1386 netdev->features |= NETIF_F_HIGHDMA;
1387 netdev->vlan_features |= NETIF_F_HIGHDMA;
1388 }
1389
1390 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1391 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
1392
1393 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1394 netdev->hw_features |= NETIF_F_LRO;
1395
1396 netdev->features |= netdev->hw_features;
1397
1398 netdev->irq = adapter->msix_entries[0].vector;
1399
1400 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1401
1402 if (netxen_read_mac_addr(adapter))
1403 dev_warn(&pdev->dev, "failed to read mac addr\n");
1404
1405 netif_carrier_off(netdev);
1406
1407 err = register_netdev(netdev);
1408 if (err) {
1409 dev_err(&pdev->dev, "failed to register net device\n");
1410 return err;
1411 }
1412
1413 return 0;
1414 }
1415
1416 #define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
1417 #define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
1418
1419 static void netxen_read_ula_info(struct netxen_adapter *adapter)
1420 {
1421 u32 temp;
1422
1423 /* Print ULA info only once for an adapter */
1424 if (adapter->portnum != 0)
1425 return;
1426
1427 temp = NXRD32(adapter, NETXEN_ULA_KEY);
1428 switch (temp) {
1429 case NETXEN_ULA_ADAPTER_KEY:
1430 dev_info(&adapter->pdev->dev, "ULA adapter");
1431 break;
1432 case NETXEN_NON_ULA_ADAPTER_KEY:
1433 dev_info(&adapter->pdev->dev, "non ULA adapter");
1434 break;
1435 default:
1436 break;
1437 }
1438
1439 return;
1440 }
1441
1442 #ifdef CONFIG_PCIEAER
1443 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1444 {
1445 struct pci_dev *pdev = adapter->pdev;
1446 struct pci_dev *root = pdev->bus->self;
1447 u32 aer_pos;
1448
1449 /* root bus? */
1450 if (!root)
1451 return;
1452
1453 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1454 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1455 return;
1456
1457 if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
1458 return;
1459
1460 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1461 if (!aer_pos)
1462 return;
1463
1464 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1465 }
1466 #endif
1467
1468 static int
1469 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1470 {
1471 struct net_device *netdev = NULL;
1472 struct netxen_adapter *adapter = NULL;
1473 int i = 0, err;
1474 int pci_func_id = PCI_FUNC(pdev->devfn);
1475 uint8_t revision_id;
1476 u32 val;
1477
1478 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1479 pr_warning("%s: chip revisions between 0x%x-0x%x "
1480 "will not be enabled.\n",
1481 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1482 return -ENODEV;
1483 }
1484
1485 if ((err = pci_enable_device(pdev)))
1486 return err;
1487
1488 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1489 err = -ENODEV;
1490 goto err_out_disable_pdev;
1491 }
1492
1493 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1494 goto err_out_disable_pdev;
1495
1496 if (NX_IS_REVISION_P3(pdev->revision))
1497 pci_enable_pcie_error_reporting(pdev);
1498
1499 pci_set_master(pdev);
1500
1501 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1502 if(!netdev) {
1503 err = -ENOMEM;
1504 goto err_out_free_res;
1505 }
1506
1507 SET_NETDEV_DEV(netdev, &pdev->dev);
1508
1509 adapter = netdev_priv(netdev);
1510 adapter->netdev = netdev;
1511 adapter->pdev = pdev;
1512 adapter->ahw.pci_func = pci_func_id;
1513
1514 revision_id = pdev->revision;
1515 adapter->ahw.revision_id = revision_id;
1516
1517 rwlock_init(&adapter->ahw.crb_lock);
1518 spin_lock_init(&adapter->ahw.mem_lock);
1519
1520 spin_lock_init(&adapter->tx_clean_lock);
1521 INIT_LIST_HEAD(&adapter->mac_list);
1522 INIT_LIST_HEAD(&adapter->ip_list);
1523
1524 err = netxen_setup_pci_map(adapter);
1525 if (err)
1526 goto err_out_free_netdev;
1527
1528 /* This will be reset for mezz cards */
1529 adapter->portnum = pci_func_id;
1530
1531 err = netxen_nic_get_board_info(adapter);
1532 if (err) {
1533 dev_err(&pdev->dev, "Error getting board config info.\n");
1534 goto err_out_iounmap;
1535 }
1536
1537 #ifdef CONFIG_PCIEAER
1538 netxen_mask_aer_correctable(adapter);
1539 #endif
1540
1541 /* Mezz cards have PCI function 0,2,3 enabled */
1542 switch (adapter->ahw.board_type) {
1543 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1544 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1545 if (pci_func_id >= 2)
1546 adapter->portnum = pci_func_id - 2;
1547 break;
1548 default:
1549 break;
1550 }
1551
1552 err = netxen_check_flash_fw_compatibility(adapter);
1553 if (err)
1554 goto err_out_iounmap;
1555
1556 if (adapter->portnum == 0) {
1557 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1558 if (val != 0xffffffff && val != 0) {
1559 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1560 adapter->need_fw_reset = 1;
1561 }
1562 }
1563
1564 err = netxen_start_firmware(adapter);
1565 if (err)
1566 goto err_out_decr_ref;
1567
1568 /*
1569 * See if the firmware gave us a virtual-physical port mapping.
1570 */
1571 adapter->physical_port = adapter->portnum;
1572 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1573 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1574 if (i != 0x55555555)
1575 adapter->physical_port = i;
1576 }
1577
1578 netxen_nic_clear_stats(adapter);
1579
1580 err = netxen_setup_intr(adapter);
1581
1582 if (err) {
1583 dev_err(&adapter->pdev->dev,
1584 "Failed to setup interrupts, error = %d\n", err);
1585 goto err_out_disable_msi;
1586 }
1587
1588 netxen_read_ula_info(adapter);
1589
1590 err = netxen_setup_netdev(adapter, netdev);
1591 if (err)
1592 goto err_out_disable_msi;
1593
1594 pci_set_drvdata(pdev, adapter);
1595
1596 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1597
1598 switch (adapter->ahw.port_type) {
1599 case NETXEN_NIC_GBE:
1600 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1601 adapter->netdev->name);
1602 break;
1603 case NETXEN_NIC_XGBE:
1604 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1605 adapter->netdev->name);
1606 break;
1607 }
1608
1609 netxen_create_diag_entries(adapter);
1610
1611 return 0;
1612
1613 err_out_disable_msi:
1614 netxen_teardown_intr(adapter);
1615
1616 netxen_free_dummy_dma(adapter);
1617
1618 err_out_decr_ref:
1619 nx_decr_dev_ref_cnt(adapter);
1620
1621 err_out_iounmap:
1622 netxen_cleanup_pci_map(adapter);
1623
1624 err_out_free_netdev:
1625 free_netdev(netdev);
1626
1627 err_out_free_res:
1628 pci_release_regions(pdev);
1629
1630 err_out_disable_pdev:
1631 pci_disable_device(pdev);
1632 return err;
1633 }
1634
1635 static
1636 void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1637 {
1638 kfree(adapter->mdump.md_template);
1639 adapter->mdump.md_template = NULL;
1640
1641 if (adapter->mdump.md_capture_buff) {
1642 vfree(adapter->mdump.md_capture_buff);
1643 adapter->mdump.md_capture_buff = NULL;
1644 }
1645 }
1646
1647 static void netxen_nic_remove(struct pci_dev *pdev)
1648 {
1649 struct netxen_adapter *adapter;
1650 struct net_device *netdev;
1651
1652 adapter = pci_get_drvdata(pdev);
1653 if (adapter == NULL)
1654 return;
1655
1656 netdev = adapter->netdev;
1657
1658 netxen_cancel_fw_work(adapter);
1659
1660 unregister_netdev(netdev);
1661
1662 cancel_work_sync(&adapter->tx_timeout_task);
1663
1664 netxen_free_ip_list(adapter, false);
1665 netxen_nic_detach(adapter);
1666
1667 nx_decr_dev_ref_cnt(adapter);
1668
1669 if (adapter->portnum == 0)
1670 netxen_free_dummy_dma(adapter);
1671
1672 clear_bit(__NX_RESETTING, &adapter->state);
1673
1674 netxen_teardown_intr(adapter);
1675 netxen_set_interrupt_mode(adapter, 0);
1676 netxen_remove_diag_entries(adapter);
1677
1678 netxen_cleanup_pci_map(adapter);
1679
1680 netxen_release_firmware(adapter);
1681
1682 if (NX_IS_REVISION_P3(pdev->revision)) {
1683 netxen_cleanup_minidump(adapter);
1684 pci_disable_pcie_error_reporting(pdev);
1685 }
1686
1687 pci_release_regions(pdev);
1688 pci_disable_device(pdev);
1689
1690 free_netdev(netdev);
1691 }
1692
1693 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1694 {
1695 struct net_device *netdev = adapter->netdev;
1696
1697 netif_device_detach(netdev);
1698
1699 netxen_cancel_fw_work(adapter);
1700
1701 if (netif_running(netdev))
1702 netxen_nic_down(adapter, netdev);
1703
1704 cancel_work_sync(&adapter->tx_timeout_task);
1705
1706 netxen_nic_detach(adapter);
1707
1708 if (adapter->portnum == 0)
1709 netxen_free_dummy_dma(adapter);
1710
1711 nx_decr_dev_ref_cnt(adapter);
1712
1713 clear_bit(__NX_RESETTING, &adapter->state);
1714 }
1715
1716 static int netxen_nic_attach_func(struct pci_dev *pdev)
1717 {
1718 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1719 struct net_device *netdev = adapter->netdev;
1720 int err;
1721
1722 err = pci_enable_device(pdev);
1723 if (err)
1724 return err;
1725
1726 pci_set_power_state(pdev, PCI_D0);
1727 pci_set_master(pdev);
1728 pci_restore_state(pdev);
1729
1730 adapter->ahw.crb_win = -1;
1731 adapter->ahw.ocm_win = -1;
1732
1733 err = netxen_start_firmware(adapter);
1734 if (err) {
1735 dev_err(&pdev->dev, "failed to start firmware\n");
1736 return err;
1737 }
1738
1739 if (netif_running(netdev)) {
1740 err = netxen_nic_attach(adapter);
1741 if (err)
1742 goto err_out;
1743
1744 err = netxen_nic_up(adapter, netdev);
1745 if (err)
1746 goto err_out_detach;
1747
1748 netxen_restore_indev_addr(netdev, NETDEV_UP);
1749 }
1750
1751 netif_device_attach(netdev);
1752 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1753 return 0;
1754
1755 err_out_detach:
1756 netxen_nic_detach(adapter);
1757 err_out:
1758 nx_decr_dev_ref_cnt(adapter);
1759 return err;
1760 }
1761
1762 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1763 pci_channel_state_t state)
1764 {
1765 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1766
1767 if (state == pci_channel_io_perm_failure)
1768 return PCI_ERS_RESULT_DISCONNECT;
1769
1770 if (nx_dev_request_aer(adapter))
1771 return PCI_ERS_RESULT_RECOVERED;
1772
1773 netxen_nic_detach_func(adapter);
1774
1775 pci_disable_device(pdev);
1776
1777 return PCI_ERS_RESULT_NEED_RESET;
1778 }
1779
1780 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1781 {
1782 int err = 0;
1783
1784 err = netxen_nic_attach_func(pdev);
1785
1786 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1787 }
1788
1789 static void netxen_io_resume(struct pci_dev *pdev)
1790 {
1791 pci_cleanup_aer_uncorrect_error_status(pdev);
1792 }
1793
1794 static void netxen_nic_shutdown(struct pci_dev *pdev)
1795 {
1796 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1797
1798 netxen_nic_detach_func(adapter);
1799
1800 if (pci_save_state(pdev))
1801 return;
1802
1803 if (netxen_nic_wol_supported(adapter)) {
1804 pci_enable_wake(pdev, PCI_D3cold, 1);
1805 pci_enable_wake(pdev, PCI_D3hot, 1);
1806 }
1807
1808 pci_disable_device(pdev);
1809 }
1810
1811 #ifdef CONFIG_PM
1812 static int
1813 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1814 {
1815 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1816 int retval;
1817
1818 netxen_nic_detach_func(adapter);
1819
1820 retval = pci_save_state(pdev);
1821 if (retval)
1822 return retval;
1823
1824 if (netxen_nic_wol_supported(adapter)) {
1825 pci_enable_wake(pdev, PCI_D3cold, 1);
1826 pci_enable_wake(pdev, PCI_D3hot, 1);
1827 }
1828
1829 pci_disable_device(pdev);
1830 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1831
1832 return 0;
1833 }
1834
1835 static int
1836 netxen_nic_resume(struct pci_dev *pdev)
1837 {
1838 return netxen_nic_attach_func(pdev);
1839 }
1840 #endif
1841
1842 static int netxen_nic_open(struct net_device *netdev)
1843 {
1844 struct netxen_adapter *adapter = netdev_priv(netdev);
1845 int err = 0;
1846
1847 if (adapter->driver_mismatch)
1848 return -EIO;
1849
1850 err = netxen_nic_attach(adapter);
1851 if (err)
1852 return err;
1853
1854 err = __netxen_nic_up(adapter, netdev);
1855 if (err)
1856 goto err_out;
1857
1858 netif_start_queue(netdev);
1859
1860 return 0;
1861
1862 err_out:
1863 netxen_nic_detach(adapter);
1864 return err;
1865 }
1866
1867 /*
1868 * netxen_nic_close - Disables a network interface entry point
1869 */
1870 static int netxen_nic_close(struct net_device *netdev)
1871 {
1872 struct netxen_adapter *adapter = netdev_priv(netdev);
1873
1874 __netxen_nic_down(adapter, netdev);
1875 return 0;
1876 }
1877
1878 static void
1879 netxen_tso_check(struct net_device *netdev,
1880 struct nx_host_tx_ring *tx_ring,
1881 struct cmd_desc_type0 *first_desc,
1882 struct sk_buff *skb)
1883 {
1884 u8 opcode = TX_ETHER_PKT;
1885 __be16 protocol = skb->protocol;
1886 u16 flags = 0, vid = 0;
1887 u32 producer;
1888 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1889 struct cmd_desc_type0 *hwdesc;
1890 struct vlan_ethhdr *vh;
1891
1892 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1893
1894 vh = (struct vlan_ethhdr *)skb->data;
1895 protocol = vh->h_vlan_encapsulated_proto;
1896 flags = FLAGS_VLAN_TAGGED;
1897
1898 } else if (vlan_tx_tag_present(skb)) {
1899 flags = FLAGS_VLAN_OOB;
1900 vid = vlan_tx_tag_get(skb);
1901 netxen_set_tx_vlan_tci(first_desc, vid);
1902 vlan_oob = 1;
1903 }
1904
1905 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1906 skb_shinfo(skb)->gso_size > 0) {
1907
1908 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1909
1910 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1911 first_desc->total_hdr_length = hdr_len;
1912 if (vlan_oob) {
1913 first_desc->total_hdr_length += VLAN_HLEN;
1914 first_desc->tcp_hdr_offset = VLAN_HLEN;
1915 first_desc->ip_hdr_offset = VLAN_HLEN;
1916 /* Only in case of TSO on vlan device */
1917 flags |= FLAGS_VLAN_TAGGED;
1918 }
1919
1920 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1921 TX_TCP_LSO6 : TX_TCP_LSO;
1922 tso = 1;
1923
1924 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1925 u8 l4proto;
1926
1927 if (protocol == cpu_to_be16(ETH_P_IP)) {
1928 l4proto = ip_hdr(skb)->protocol;
1929
1930 if (l4proto == IPPROTO_TCP)
1931 opcode = TX_TCP_PKT;
1932 else if(l4proto == IPPROTO_UDP)
1933 opcode = TX_UDP_PKT;
1934 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1935 l4proto = ipv6_hdr(skb)->nexthdr;
1936
1937 if (l4proto == IPPROTO_TCP)
1938 opcode = TX_TCPV6_PKT;
1939 else if(l4proto == IPPROTO_UDP)
1940 opcode = TX_UDPV6_PKT;
1941 }
1942 }
1943
1944 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1945 first_desc->ip_hdr_offset += skb_network_offset(skb);
1946 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1947
1948 if (!tso)
1949 return;
1950
1951 /* For LSO, we need to copy the MAC/IP/TCP headers into
1952 * the descriptor ring
1953 */
1954 producer = tx_ring->producer;
1955 copied = 0;
1956 offset = 2;
1957
1958 if (vlan_oob) {
1959 /* Create a TSO vlan header template for firmware */
1960
1961 hwdesc = &tx_ring->desc_head[producer];
1962 tx_ring->cmd_buf_arr[producer].skb = NULL;
1963
1964 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1965 hdr_len + VLAN_HLEN);
1966
1967 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1968 skb_copy_from_linear_data(skb, vh, 12);
1969 vh->h_vlan_proto = htons(ETH_P_8021Q);
1970 vh->h_vlan_TCI = htons(vid);
1971 skb_copy_from_linear_data_offset(skb, 12,
1972 (char *)vh + 16, copy_len - 16);
1973
1974 copied = copy_len - VLAN_HLEN;
1975 offset = 0;
1976
1977 producer = get_next_index(producer, tx_ring->num_desc);
1978 }
1979
1980 while (copied < hdr_len) {
1981
1982 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1983 (hdr_len - copied));
1984
1985 hwdesc = &tx_ring->desc_head[producer];
1986 tx_ring->cmd_buf_arr[producer].skb = NULL;
1987
1988 skb_copy_from_linear_data_offset(skb, copied,
1989 (char *)hwdesc + offset, copy_len);
1990
1991 copied += copy_len;
1992 offset = 0;
1993
1994 producer = get_next_index(producer, tx_ring->num_desc);
1995 }
1996
1997 tx_ring->producer = producer;
1998 barrier();
1999 }
2000
2001 static int
2002 netxen_map_tx_skb(struct pci_dev *pdev,
2003 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
2004 {
2005 struct netxen_skb_frag *nf;
2006 struct skb_frag_struct *frag;
2007 int i, nr_frags;
2008 dma_addr_t map;
2009
2010 nr_frags = skb_shinfo(skb)->nr_frags;
2011 nf = &pbuf->frag_array[0];
2012
2013 map = pci_map_single(pdev, skb->data,
2014 skb_headlen(skb), PCI_DMA_TODEVICE);
2015 if (pci_dma_mapping_error(pdev, map))
2016 goto out_err;
2017
2018 nf->dma = map;
2019 nf->length = skb_headlen(skb);
2020
2021 for (i = 0; i < nr_frags; i++) {
2022 frag = &skb_shinfo(skb)->frags[i];
2023 nf = &pbuf->frag_array[i+1];
2024
2025 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
2026 DMA_TO_DEVICE);
2027 if (dma_mapping_error(&pdev->dev, map))
2028 goto unwind;
2029
2030 nf->dma = map;
2031 nf->length = skb_frag_size(frag);
2032 }
2033
2034 return 0;
2035
2036 unwind:
2037 while (--i >= 0) {
2038 nf = &pbuf->frag_array[i+1];
2039 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
2040 nf->dma = 0ULL;
2041 }
2042
2043 nf = &pbuf->frag_array[0];
2044 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
2045 nf->dma = 0ULL;
2046
2047 out_err:
2048 return -ENOMEM;
2049 }
2050
2051 static inline void
2052 netxen_clear_cmddesc(u64 *desc)
2053 {
2054 desc[0] = 0ULL;
2055 desc[2] = 0ULL;
2056 }
2057
2058 static netdev_tx_t
2059 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2060 {
2061 struct netxen_adapter *adapter = netdev_priv(netdev);
2062 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
2063 struct netxen_cmd_buffer *pbuf;
2064 struct netxen_skb_frag *buffrag;
2065 struct cmd_desc_type0 *hwdesc, *first_desc;
2066 struct pci_dev *pdev;
2067 int i, k;
2068 int delta = 0;
2069 struct skb_frag_struct *frag;
2070
2071 u32 producer;
2072 int frag_count, no_of_desc;
2073 u32 num_txd = tx_ring->num_desc;
2074
2075 frag_count = skb_shinfo(skb)->nr_frags + 1;
2076
2077 /* 14 frags supported for normal packet and
2078 * 32 frags supported for TSO packet
2079 */
2080 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2081
2082 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2083 frag = &skb_shinfo(skb)->frags[i];
2084 delta += skb_frag_size(frag);
2085 }
2086
2087 if (!__pskb_pull_tail(skb, delta))
2088 goto drop_packet;
2089
2090 frag_count = 1 + skb_shinfo(skb)->nr_frags;
2091 }
2092 /* 4 fragments per cmd des */
2093 no_of_desc = (frag_count + 3) >> 2;
2094
2095 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2096 netif_stop_queue(netdev);
2097 smp_mb();
2098 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2099 netif_start_queue(netdev);
2100 else
2101 return NETDEV_TX_BUSY;
2102 }
2103
2104 producer = tx_ring->producer;
2105 pbuf = &tx_ring->cmd_buf_arr[producer];
2106
2107 pdev = adapter->pdev;
2108
2109 if (netxen_map_tx_skb(pdev, skb, pbuf))
2110 goto drop_packet;
2111
2112 pbuf->skb = skb;
2113 pbuf->frag_count = frag_count;
2114
2115 first_desc = hwdesc = &tx_ring->desc_head[producer];
2116 netxen_clear_cmddesc((u64 *)hwdesc);
2117
2118 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2119 netxen_set_tx_port(first_desc, adapter->portnum);
2120
2121 for (i = 0; i < frag_count; i++) {
2122
2123 k = i % 4;
2124
2125 if ((k == 0) && (i > 0)) {
2126 /* move to next desc.*/
2127 producer = get_next_index(producer, num_txd);
2128 hwdesc = &tx_ring->desc_head[producer];
2129 netxen_clear_cmddesc((u64 *)hwdesc);
2130 tx_ring->cmd_buf_arr[producer].skb = NULL;
2131 }
2132
2133 buffrag = &pbuf->frag_array[i];
2134
2135 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2136 switch (k) {
2137 case 0:
2138 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2139 break;
2140 case 1:
2141 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2142 break;
2143 case 2:
2144 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2145 break;
2146 case 3:
2147 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2148 break;
2149 }
2150 }
2151
2152 tx_ring->producer = get_next_index(producer, num_txd);
2153
2154 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2155
2156 adapter->stats.txbytes += skb->len;
2157 adapter->stats.xmitcalled++;
2158
2159 netxen_nic_update_cmd_producer(adapter, tx_ring);
2160
2161 return NETDEV_TX_OK;
2162
2163 drop_packet:
2164 adapter->stats.txdropped++;
2165 dev_kfree_skb_any(skb);
2166 return NETDEV_TX_OK;
2167 }
2168
2169 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2170 {
2171 struct net_device *netdev = adapter->netdev;
2172 uint32_t temp, temp_state, temp_val;
2173 int rv = 0;
2174
2175 temp = NXRD32(adapter, CRB_TEMP_STATE);
2176
2177 temp_state = nx_get_temp_state(temp);
2178 temp_val = nx_get_temp_val(temp);
2179
2180 if (temp_state == NX_TEMP_PANIC) {
2181 printk(KERN_ALERT
2182 "%s: Device temperature %d degrees C exceeds"
2183 " maximum allowed. Hardware has been shut down.\n",
2184 netdev->name, temp_val);
2185 rv = 1;
2186 } else if (temp_state == NX_TEMP_WARN) {
2187 if (adapter->temp == NX_TEMP_NORMAL) {
2188 printk(KERN_ALERT
2189 "%s: Device temperature %d degrees C "
2190 "exceeds operating range."
2191 " Immediate action needed.\n",
2192 netdev->name, temp_val);
2193 }
2194 } else {
2195 if (adapter->temp == NX_TEMP_WARN) {
2196 printk(KERN_INFO
2197 "%s: Device temperature is now %d degrees C"
2198 " in normal range.\n", netdev->name,
2199 temp_val);
2200 }
2201 }
2202 adapter->temp = temp_state;
2203 return rv;
2204 }
2205
2206 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2207 {
2208 struct net_device *netdev = adapter->netdev;
2209
2210 if (adapter->ahw.linkup && !linkup) {
2211 printk(KERN_INFO "%s: %s NIC Link is down\n",
2212 netxen_nic_driver_name, netdev->name);
2213 adapter->ahw.linkup = 0;
2214 if (netif_running(netdev)) {
2215 netif_carrier_off(netdev);
2216 netif_stop_queue(netdev);
2217 }
2218 adapter->link_changed = !adapter->has_link_events;
2219 } else if (!adapter->ahw.linkup && linkup) {
2220 printk(KERN_INFO "%s: %s NIC Link is up\n",
2221 netxen_nic_driver_name, netdev->name);
2222 adapter->ahw.linkup = 1;
2223 if (netif_running(netdev)) {
2224 netif_carrier_on(netdev);
2225 netif_wake_queue(netdev);
2226 }
2227 adapter->link_changed = !adapter->has_link_events;
2228 }
2229 }
2230
2231 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2232 {
2233 u32 val, port, linkup;
2234
2235 port = adapter->physical_port;
2236
2237 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2238 val = NXRD32(adapter, CRB_XG_STATE_P3);
2239 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2240 linkup = (val == XG_LINK_UP_P3);
2241 } else {
2242 val = NXRD32(adapter, CRB_XG_STATE);
2243 val = (val >> port*8) & 0xff;
2244 linkup = (val == XG_LINK_UP);
2245 }
2246
2247 netxen_advert_link_change(adapter, linkup);
2248 }
2249
2250 static void netxen_tx_timeout(struct net_device *netdev)
2251 {
2252 struct netxen_adapter *adapter = netdev_priv(netdev);
2253
2254 if (test_bit(__NX_RESETTING, &adapter->state))
2255 return;
2256
2257 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2258 schedule_work(&adapter->tx_timeout_task);
2259 }
2260
2261 static void netxen_tx_timeout_task(struct work_struct *work)
2262 {
2263 struct netxen_adapter *adapter =
2264 container_of(work, struct netxen_adapter, tx_timeout_task);
2265
2266 if (!netif_running(adapter->netdev))
2267 return;
2268
2269 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2270 return;
2271
2272 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2273 goto request_reset;
2274
2275 rtnl_lock();
2276 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2277 /* try to scrub interrupt */
2278 netxen_napi_disable(adapter);
2279
2280 netxen_napi_enable(adapter);
2281
2282 netif_wake_queue(adapter->netdev);
2283
2284 clear_bit(__NX_RESETTING, &adapter->state);
2285 } else {
2286 clear_bit(__NX_RESETTING, &adapter->state);
2287 if (netxen_nic_reset_context(adapter)) {
2288 rtnl_unlock();
2289 goto request_reset;
2290 }
2291 }
2292 adapter->netdev->trans_start = jiffies;
2293 rtnl_unlock();
2294 return;
2295
2296 request_reset:
2297 adapter->need_fw_reset = 1;
2298 clear_bit(__NX_RESETTING, &adapter->state);
2299 }
2300
2301 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *netdev,
2302 struct rtnl_link_stats64 *stats)
2303 {
2304 struct netxen_adapter *adapter = netdev_priv(netdev);
2305
2306 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2307 stats->tx_packets = adapter->stats.xmitfinished;
2308 stats->rx_bytes = adapter->stats.rxbytes;
2309 stats->tx_bytes = adapter->stats.txbytes;
2310 stats->rx_dropped = adapter->stats.rxdropped;
2311 stats->tx_dropped = adapter->stats.txdropped;
2312
2313 return stats;
2314 }
2315
2316 static irqreturn_t netxen_intr(int irq, void *data)
2317 {
2318 struct nx_host_sds_ring *sds_ring = data;
2319 struct netxen_adapter *adapter = sds_ring->adapter;
2320 u32 status = 0;
2321
2322 status = readl(adapter->isr_int_vec);
2323
2324 if (!(status & adapter->int_vec_bit))
2325 return IRQ_NONE;
2326
2327 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2328 /* check interrupt state machine, to be sure */
2329 status = readl(adapter->crb_int_state_reg);
2330 if (!ISR_LEGACY_INT_TRIGGERED(status))
2331 return IRQ_NONE;
2332
2333 } else {
2334 unsigned long our_int = 0;
2335
2336 our_int = readl(adapter->crb_int_state_reg);
2337
2338 /* not our interrupt */
2339 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2340 return IRQ_NONE;
2341
2342 /* claim interrupt */
2343 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2344
2345 /* clear interrupt */
2346 netxen_nic_disable_int(sds_ring);
2347 }
2348
2349 writel(0xffffffff, adapter->tgt_status_reg);
2350 /* read twice to ensure write is flushed */
2351 readl(adapter->isr_int_vec);
2352 readl(adapter->isr_int_vec);
2353
2354 napi_schedule(&sds_ring->napi);
2355
2356 return IRQ_HANDLED;
2357 }
2358
2359 static irqreturn_t netxen_msi_intr(int irq, void *data)
2360 {
2361 struct nx_host_sds_ring *sds_ring = data;
2362 struct netxen_adapter *adapter = sds_ring->adapter;
2363
2364 /* clear interrupt */
2365 writel(0xffffffff, adapter->tgt_status_reg);
2366
2367 napi_schedule(&sds_ring->napi);
2368 return IRQ_HANDLED;
2369 }
2370
2371 static irqreturn_t netxen_msix_intr(int irq, void *data)
2372 {
2373 struct nx_host_sds_ring *sds_ring = data;
2374
2375 napi_schedule(&sds_ring->napi);
2376 return IRQ_HANDLED;
2377 }
2378
2379 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2380 {
2381 struct nx_host_sds_ring *sds_ring =
2382 container_of(napi, struct nx_host_sds_ring, napi);
2383
2384 struct netxen_adapter *adapter = sds_ring->adapter;
2385
2386 int tx_complete;
2387 int work_done;
2388
2389 tx_complete = netxen_process_cmd_ring(adapter);
2390
2391 work_done = netxen_process_rcv_ring(sds_ring, budget);
2392
2393 if ((work_done < budget) && tx_complete) {
2394 napi_complete(&sds_ring->napi);
2395 if (test_bit(__NX_DEV_UP, &adapter->state))
2396 netxen_nic_enable_int(sds_ring);
2397 }
2398
2399 return work_done;
2400 }
2401
2402 #ifdef CONFIG_NET_POLL_CONTROLLER
2403 static void netxen_nic_poll_controller(struct net_device *netdev)
2404 {
2405 int ring;
2406 struct nx_host_sds_ring *sds_ring;
2407 struct netxen_adapter *adapter = netdev_priv(netdev);
2408 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2409
2410 disable_irq(adapter->irq);
2411 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2412 sds_ring = &recv_ctx->sds_rings[ring];
2413 netxen_intr(adapter->irq, sds_ring);
2414 }
2415 enable_irq(adapter->irq);
2416 }
2417 #endif
2418
2419 static int
2420 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2421 {
2422 int count;
2423 if (netxen_api_lock(adapter))
2424 return -EIO;
2425
2426 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2427
2428 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2429
2430 netxen_api_unlock(adapter);
2431 return count;
2432 }
2433
2434 static int
2435 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2436 {
2437 int count, state;
2438 if (netxen_api_lock(adapter))
2439 return -EIO;
2440
2441 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2442 WARN_ON(count == 0);
2443
2444 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2445 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2446
2447 if (count == 0 && state != NX_DEV_FAILED)
2448 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2449
2450 netxen_api_unlock(adapter);
2451 return count;
2452 }
2453
2454 static int
2455 nx_dev_request_aer(struct netxen_adapter *adapter)
2456 {
2457 u32 state;
2458 int ret = -EINVAL;
2459
2460 if (netxen_api_lock(adapter))
2461 return ret;
2462
2463 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2464
2465 if (state == NX_DEV_NEED_AER)
2466 ret = 0;
2467 else if (state == NX_DEV_READY) {
2468 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2469 ret = 0;
2470 }
2471
2472 netxen_api_unlock(adapter);
2473 return ret;
2474 }
2475
2476 int
2477 nx_dev_request_reset(struct netxen_adapter *adapter)
2478 {
2479 u32 state;
2480 int ret = -EINVAL;
2481
2482 if (netxen_api_lock(adapter))
2483 return ret;
2484
2485 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2486
2487 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2488 ret = 0;
2489 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2490 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2491 adapter->flags |= NETXEN_FW_RESET_OWNER;
2492 ret = 0;
2493 }
2494
2495 netxen_api_unlock(adapter);
2496
2497 return ret;
2498 }
2499
2500 static int
2501 netxen_can_start_firmware(struct netxen_adapter *adapter)
2502 {
2503 int count;
2504 int can_start = 0;
2505
2506 if (netxen_api_lock(adapter)) {
2507 nx_incr_dev_ref_cnt(adapter);
2508 return -1;
2509 }
2510
2511 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2512
2513 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2514 count = 0;
2515
2516 if (count == 0) {
2517 can_start = 1;
2518 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2519 }
2520
2521 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2522
2523 netxen_api_unlock(adapter);
2524
2525 return can_start;
2526 }
2527
2528 static void
2529 netxen_schedule_work(struct netxen_adapter *adapter,
2530 work_func_t func, int delay)
2531 {
2532 INIT_DELAYED_WORK(&adapter->fw_work, func);
2533 schedule_delayed_work(&adapter->fw_work, delay);
2534 }
2535
2536 static void
2537 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2538 {
2539 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2540 msleep(10);
2541
2542 cancel_delayed_work_sync(&adapter->fw_work);
2543 }
2544
2545 static void
2546 netxen_attach_work(struct work_struct *work)
2547 {
2548 struct netxen_adapter *adapter = container_of(work,
2549 struct netxen_adapter, fw_work.work);
2550 struct net_device *netdev = adapter->netdev;
2551 int err = 0;
2552
2553 if (netif_running(netdev)) {
2554 err = netxen_nic_attach(adapter);
2555 if (err)
2556 goto done;
2557
2558 err = netxen_nic_up(adapter, netdev);
2559 if (err) {
2560 netxen_nic_detach(adapter);
2561 goto done;
2562 }
2563
2564 netxen_restore_indev_addr(netdev, NETDEV_UP);
2565 }
2566
2567 netif_device_attach(netdev);
2568
2569 done:
2570 adapter->fw_fail_cnt = 0;
2571 clear_bit(__NX_RESETTING, &adapter->state);
2572 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2573 }
2574
2575 static void
2576 netxen_fwinit_work(struct work_struct *work)
2577 {
2578 struct netxen_adapter *adapter = container_of(work,
2579 struct netxen_adapter, fw_work.work);
2580 int dev_state;
2581 int count;
2582 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2583 if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2584 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2585 WARN_ON(count == 0);
2586 if (count == 1) {
2587 if (adapter->mdump.md_enabled) {
2588 rtnl_lock();
2589 netxen_dump_fw(adapter);
2590 rtnl_unlock();
2591 }
2592 adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2593 if (netxen_api_lock(adapter)) {
2594 clear_bit(__NX_RESETTING, &adapter->state);
2595 NXWR32(adapter, NX_CRB_DEV_STATE,
2596 NX_DEV_FAILED);
2597 return;
2598 }
2599 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2600 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2601 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2602 dev_state = NX_DEV_COLD;
2603 netxen_api_unlock(adapter);
2604 }
2605 }
2606
2607 switch (dev_state) {
2608 case NX_DEV_COLD:
2609 case NX_DEV_READY:
2610 if (!netxen_start_firmware(adapter)) {
2611 netxen_schedule_work(adapter, netxen_attach_work, 0);
2612 return;
2613 }
2614 break;
2615
2616 case NX_DEV_NEED_RESET:
2617 case NX_DEV_INITALIZING:
2618 netxen_schedule_work(adapter,
2619 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2620 return;
2621
2622 case NX_DEV_FAILED:
2623 default:
2624 nx_incr_dev_ref_cnt(adapter);
2625 break;
2626 }
2627
2628 if (netxen_api_lock(adapter)) {
2629 clear_bit(__NX_RESETTING, &adapter->state);
2630 return;
2631 }
2632 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2633 netxen_api_unlock(adapter);
2634 dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2635 adapter->netdev->name);
2636
2637 clear_bit(__NX_RESETTING, &adapter->state);
2638 }
2639
2640 static void
2641 netxen_detach_work(struct work_struct *work)
2642 {
2643 struct netxen_adapter *adapter = container_of(work,
2644 struct netxen_adapter, fw_work.work);
2645 struct net_device *netdev = adapter->netdev;
2646 int ref_cnt = 0, delay;
2647 u32 status;
2648
2649 netif_device_detach(netdev);
2650
2651 netxen_nic_down(adapter, netdev);
2652
2653 rtnl_lock();
2654 netxen_nic_detach(adapter);
2655 rtnl_unlock();
2656
2657 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2658
2659 if (status & NX_RCODE_FATAL_ERROR)
2660 goto err_ret;
2661
2662 if (adapter->temp == NX_TEMP_PANIC)
2663 goto err_ret;
2664
2665 if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2666 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2667
2668 if (ref_cnt == -EIO)
2669 goto err_ret;
2670
2671 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2672
2673 adapter->fw_wait_cnt = 0;
2674 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2675
2676 return;
2677
2678 err_ret:
2679 clear_bit(__NX_RESETTING, &adapter->state);
2680 }
2681
2682 static int
2683 netxen_check_health(struct netxen_adapter *adapter)
2684 {
2685 u32 state, heartbit;
2686 u32 peg_status;
2687 struct net_device *netdev = adapter->netdev;
2688
2689 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2690 if (state == NX_DEV_NEED_AER)
2691 return 0;
2692
2693 if (netxen_nic_check_temp(adapter))
2694 goto detach;
2695
2696 if (adapter->need_fw_reset) {
2697 if (nx_dev_request_reset(adapter))
2698 return 0;
2699 goto detach;
2700 }
2701
2702 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2703 * 1. Tx timeout 2. Fw hang
2704 * Send request to destroy context in case of tx timeout only
2705 * and doesn't required in case of Fw hang
2706 */
2707 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2708 adapter->need_fw_reset = 1;
2709 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2710 goto detach;
2711 }
2712
2713 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2714 return 0;
2715
2716 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2717 if (heartbit != adapter->heartbit) {
2718 adapter->heartbit = heartbit;
2719 adapter->fw_fail_cnt = 0;
2720 if (adapter->need_fw_reset)
2721 goto detach;
2722 return 0;
2723 }
2724
2725 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2726 return 0;
2727
2728 if (nx_dev_request_reset(adapter))
2729 return 0;
2730
2731 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2732
2733 dev_err(&netdev->dev, "firmware hang detected\n");
2734 peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2735 dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2736 "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2737 "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2738 "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2739 "PEG_NET_4_PC: 0x%x\n",
2740 peg_status,
2741 NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2742 NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2743 NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2744 NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2745 NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2746 NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2747 if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2748 dev_err(&adapter->pdev->dev,
2749 "Firmware aborted with error code 0x00006700. "
2750 "Device is being reset.\n");
2751 detach:
2752 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2753 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2754 netxen_schedule_work(adapter, netxen_detach_work, 0);
2755 return 1;
2756 }
2757
2758 static void
2759 netxen_fw_poll_work(struct work_struct *work)
2760 {
2761 struct netxen_adapter *adapter = container_of(work,
2762 struct netxen_adapter, fw_work.work);
2763
2764 if (test_bit(__NX_RESETTING, &adapter->state))
2765 goto reschedule;
2766
2767 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2768 if (!adapter->has_link_events) {
2769
2770 netxen_nic_handle_phy_intr(adapter);
2771
2772 if (adapter->link_changed)
2773 netxen_nic_set_link_parameters(adapter);
2774 }
2775 }
2776
2777 if (netxen_check_health(adapter))
2778 return;
2779
2780 reschedule:
2781 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2782 }
2783
2784 static ssize_t
2785 netxen_store_bridged_mode(struct device *dev,
2786 struct device_attribute *attr, const char *buf, size_t len)
2787 {
2788 struct net_device *net = to_net_dev(dev);
2789 struct netxen_adapter *adapter = netdev_priv(net);
2790 unsigned long new;
2791 int ret = -EINVAL;
2792
2793 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2794 goto err_out;
2795
2796 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2797 goto err_out;
2798
2799 if (kstrtoul(buf, 2, &new))
2800 goto err_out;
2801
2802 if (!netxen_config_bridged_mode(adapter, !!new))
2803 ret = len;
2804
2805 err_out:
2806 return ret;
2807 }
2808
2809 static ssize_t
2810 netxen_show_bridged_mode(struct device *dev,
2811 struct device_attribute *attr, char *buf)
2812 {
2813 struct net_device *net = to_net_dev(dev);
2814 struct netxen_adapter *adapter;
2815 int bridged_mode = 0;
2816
2817 adapter = netdev_priv(net);
2818
2819 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2820 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2821
2822 return sprintf(buf, "%d\n", bridged_mode);
2823 }
2824
2825 static struct device_attribute dev_attr_bridged_mode = {
2826 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2827 .show = netxen_show_bridged_mode,
2828 .store = netxen_store_bridged_mode,
2829 };
2830
2831 static ssize_t
2832 netxen_store_diag_mode(struct device *dev,
2833 struct device_attribute *attr, const char *buf, size_t len)
2834 {
2835 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2836 unsigned long new;
2837
2838 if (kstrtoul(buf, 2, &new))
2839 return -EINVAL;
2840
2841 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2842 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2843
2844 return len;
2845 }
2846
2847 static ssize_t
2848 netxen_show_diag_mode(struct device *dev,
2849 struct device_attribute *attr, char *buf)
2850 {
2851 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2852
2853 return sprintf(buf, "%d\n",
2854 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2855 }
2856
2857 static struct device_attribute dev_attr_diag_mode = {
2858 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2859 .show = netxen_show_diag_mode,
2860 .store = netxen_store_diag_mode,
2861 };
2862
2863 static int
2864 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2865 loff_t offset, size_t size)
2866 {
2867 size_t crb_size = 4;
2868
2869 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2870 return -EIO;
2871
2872 if (offset < NETXEN_PCI_CRBSPACE) {
2873 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2874 return -EINVAL;
2875
2876 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2877 NETXEN_PCI_CAMQM_2M_END))
2878 crb_size = 8;
2879 else
2880 return -EINVAL;
2881 }
2882
2883 if ((size != crb_size) || (offset & (crb_size-1)))
2884 return -EINVAL;
2885
2886 return 0;
2887 }
2888
2889 static ssize_t
2890 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2891 struct bin_attribute *attr,
2892 char *buf, loff_t offset, size_t size)
2893 {
2894 struct device *dev = container_of(kobj, struct device, kobj);
2895 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2896 u32 data;
2897 u64 qmdata;
2898 int ret;
2899
2900 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2901 if (ret != 0)
2902 return ret;
2903
2904 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2905 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2906 NETXEN_PCI_CAMQM_2M_END)) {
2907 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2908 memcpy(buf, &qmdata, size);
2909 } else {
2910 data = NXRD32(adapter, offset);
2911 memcpy(buf, &data, size);
2912 }
2913
2914 return size;
2915 }
2916
2917 static ssize_t
2918 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2919 struct bin_attribute *attr,
2920 char *buf, loff_t offset, size_t size)
2921 {
2922 struct device *dev = container_of(kobj, struct device, kobj);
2923 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2924 u32 data;
2925 u64 qmdata;
2926 int ret;
2927
2928 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2929 if (ret != 0)
2930 return ret;
2931
2932 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2933 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2934 NETXEN_PCI_CAMQM_2M_END)) {
2935 memcpy(&qmdata, buf, size);
2936 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2937 } else {
2938 memcpy(&data, buf, size);
2939 NXWR32(adapter, offset, data);
2940 }
2941
2942 return size;
2943 }
2944
2945 static int
2946 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2947 loff_t offset, size_t size)
2948 {
2949 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2950 return -EIO;
2951
2952 if ((size != 8) || (offset & 0x7))
2953 return -EIO;
2954
2955 return 0;
2956 }
2957
2958 static ssize_t
2959 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2960 struct bin_attribute *attr,
2961 char *buf, loff_t offset, size_t size)
2962 {
2963 struct device *dev = container_of(kobj, struct device, kobj);
2964 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2965 u64 data;
2966 int ret;
2967
2968 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2969 if (ret != 0)
2970 return ret;
2971
2972 if (adapter->pci_mem_read(adapter, offset, &data))
2973 return -EIO;
2974
2975 memcpy(buf, &data, size);
2976
2977 return size;
2978 }
2979
2980 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2981 struct bin_attribute *attr, char *buf,
2982 loff_t offset, size_t size)
2983 {
2984 struct device *dev = container_of(kobj, struct device, kobj);
2985 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2986 u64 data;
2987 int ret;
2988
2989 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2990 if (ret != 0)
2991 return ret;
2992
2993 memcpy(&data, buf, size);
2994
2995 if (adapter->pci_mem_write(adapter, offset, data))
2996 return -EIO;
2997
2998 return size;
2999 }
3000
3001
3002 static struct bin_attribute bin_attr_crb = {
3003 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
3004 .size = 0,
3005 .read = netxen_sysfs_read_crb,
3006 .write = netxen_sysfs_write_crb,
3007 };
3008
3009 static struct bin_attribute bin_attr_mem = {
3010 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
3011 .size = 0,
3012 .read = netxen_sysfs_read_mem,
3013 .write = netxen_sysfs_write_mem,
3014 };
3015
3016 static ssize_t
3017 netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
3018 struct bin_attribute *attr,
3019 char *buf, loff_t offset, size_t size)
3020 {
3021 struct device *dev = container_of(kobj, struct device, kobj);
3022 struct netxen_adapter *adapter = dev_get_drvdata(dev);
3023 struct net_device *netdev = adapter->netdev;
3024 struct netxen_dimm_cfg dimm;
3025 u8 dw, rows, cols, banks, ranks;
3026 u32 val;
3027
3028 if (size != sizeof(struct netxen_dimm_cfg)) {
3029 netdev_err(netdev, "Invalid size\n");
3030 return -1;
3031 }
3032
3033 memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
3034 val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
3035
3036 /* Checks if DIMM info is valid. */
3037 if (val & NETXEN_DIMM_VALID_FLAG) {
3038 netdev_err(netdev, "Invalid DIMM flag\n");
3039 dimm.presence = 0xff;
3040 goto out;
3041 }
3042
3043 rows = NETXEN_DIMM_NUMROWS(val);
3044 cols = NETXEN_DIMM_NUMCOLS(val);
3045 ranks = NETXEN_DIMM_NUMRANKS(val);
3046 banks = NETXEN_DIMM_NUMBANKS(val);
3047 dw = NETXEN_DIMM_DATAWIDTH(val);
3048
3049 dimm.presence = (val & NETXEN_DIMM_PRESENT);
3050
3051 /* Checks if DIMM info is present. */
3052 if (!dimm.presence) {
3053 netdev_err(netdev, "DIMM not present\n");
3054 goto out;
3055 }
3056
3057 dimm.dimm_type = NETXEN_DIMM_TYPE(val);
3058
3059 switch (dimm.dimm_type) {
3060 case NETXEN_DIMM_TYPE_RDIMM:
3061 case NETXEN_DIMM_TYPE_UDIMM:
3062 case NETXEN_DIMM_TYPE_SO_DIMM:
3063 case NETXEN_DIMM_TYPE_Micro_DIMM:
3064 case NETXEN_DIMM_TYPE_Mini_RDIMM:
3065 case NETXEN_DIMM_TYPE_Mini_UDIMM:
3066 break;
3067 default:
3068 netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
3069 goto out;
3070 }
3071
3072 if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
3073 dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
3074 else
3075 dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
3076
3077 if (val & NETXEN_DIMM_SIZE) {
3078 dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
3079 goto out;
3080 }
3081
3082 if (!rows) {
3083 netdev_err(netdev, "Invalid no of rows %x\n", rows);
3084 goto out;
3085 }
3086
3087 if (!cols) {
3088 netdev_err(netdev, "Invalid no of columns %x\n", cols);
3089 goto out;
3090 }
3091
3092 if (!banks) {
3093 netdev_err(netdev, "Invalid no of banks %x\n", banks);
3094 goto out;
3095 }
3096
3097 ranks += 1;
3098
3099 switch (dw) {
3100 case 0x0:
3101 dw = 32;
3102 break;
3103 case 0x1:
3104 dw = 33;
3105 break;
3106 case 0x2:
3107 dw = 36;
3108 break;
3109 case 0x3:
3110 dw = 64;
3111 break;
3112 case 0x4:
3113 dw = 72;
3114 break;
3115 case 0x5:
3116 dw = 80;
3117 break;
3118 case 0x6:
3119 dw = 128;
3120 break;
3121 case 0x7:
3122 dw = 144;
3123 break;
3124 default:
3125 netdev_err(netdev, "Invalid data-width %x\n", dw);
3126 goto out;
3127 }
3128
3129 dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3130 /* Size returned in MB. */
3131 dimm.size = (dimm.size) / 0x100000;
3132 out:
3133 memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3134 return sizeof(struct netxen_dimm_cfg);
3135
3136 }
3137
3138 static struct bin_attribute bin_attr_dimm = {
3139 .attr = { .name = "dimm", .mode = (S_IRUGO | S_IWUSR) },
3140 .size = 0,
3141 .read = netxen_sysfs_read_dimm,
3142 };
3143
3144
3145 static void
3146 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3147 {
3148 struct device *dev = &adapter->pdev->dev;
3149
3150 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3151 /* bridged_mode control */
3152 if (device_create_file(dev, &dev_attr_bridged_mode)) {
3153 dev_warn(dev,
3154 "failed to create bridged_mode sysfs entry\n");
3155 }
3156 }
3157 }
3158
3159 static void
3160 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3161 {
3162 struct device *dev = &adapter->pdev->dev;
3163
3164 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3165 device_remove_file(dev, &dev_attr_bridged_mode);
3166 }
3167
3168 static void
3169 netxen_create_diag_entries(struct netxen_adapter *adapter)
3170 {
3171 struct pci_dev *pdev = adapter->pdev;
3172 struct device *dev;
3173
3174 dev = &pdev->dev;
3175 if (device_create_file(dev, &dev_attr_diag_mode))
3176 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3177 if (device_create_bin_file(dev, &bin_attr_crb))
3178 dev_info(dev, "failed to create crb sysfs entry\n");
3179 if (device_create_bin_file(dev, &bin_attr_mem))
3180 dev_info(dev, "failed to create mem sysfs entry\n");
3181 if (device_create_bin_file(dev, &bin_attr_dimm))
3182 dev_info(dev, "failed to create dimm sysfs entry\n");
3183 }
3184
3185
3186 static void
3187 netxen_remove_diag_entries(struct netxen_adapter *adapter)
3188 {
3189 struct pci_dev *pdev = adapter->pdev;
3190 struct device *dev = &pdev->dev;
3191
3192 device_remove_file(dev, &dev_attr_diag_mode);
3193 device_remove_bin_file(dev, &bin_attr_crb);
3194 device_remove_bin_file(dev, &bin_attr_mem);
3195 device_remove_bin_file(dev, &bin_attr_dimm);
3196 }
3197
3198 #ifdef CONFIG_INET
3199
3200 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3201
3202 static int
3203 netxen_destip_supported(struct netxen_adapter *adapter)
3204 {
3205 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3206 return 0;
3207
3208 if (adapter->ahw.cut_through)
3209 return 0;
3210
3211 return 1;
3212 }
3213
3214 static void
3215 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3216 {
3217 struct nx_ip_list *cur, *tmp_cur;
3218
3219 list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
3220 if (master) {
3221 if (cur->master) {
3222 netxen_config_ipaddr(adapter, cur->ip_addr,
3223 NX_IP_DOWN);
3224 list_del(&cur->list);
3225 kfree(cur);
3226 }
3227 } else {
3228 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3229 list_del(&cur->list);
3230 kfree(cur);
3231 }
3232 }
3233 }
3234
3235 static bool
3236 netxen_list_config_ip(struct netxen_adapter *adapter,
3237 struct in_ifaddr *ifa, unsigned long event)
3238 {
3239 struct net_device *dev;
3240 struct nx_ip_list *cur, *tmp_cur;
3241 struct list_head *head;
3242 bool ret = false;
3243
3244 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3245
3246 if (dev == NULL)
3247 goto out;
3248
3249 switch (event) {
3250 case NX_IP_UP:
3251 list_for_each(head, &adapter->ip_list) {
3252 cur = list_entry(head, struct nx_ip_list, list);
3253
3254 if (cur->ip_addr == ifa->ifa_address)
3255 goto out;
3256 }
3257
3258 cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
3259 if (cur == NULL)
3260 goto out;
3261 if (dev->priv_flags & IFF_802_1Q_VLAN)
3262 dev = vlan_dev_real_dev(dev);
3263 cur->master = !!netif_is_bond_master(dev);
3264 cur->ip_addr = ifa->ifa_address;
3265 list_add_tail(&cur->list, &adapter->ip_list);
3266 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3267 ret = true;
3268 break;
3269 case NX_IP_DOWN:
3270 list_for_each_entry_safe(cur, tmp_cur,
3271 &adapter->ip_list, list) {
3272 if (cur->ip_addr == ifa->ifa_address) {
3273 list_del(&cur->list);
3274 kfree(cur);
3275 netxen_config_ipaddr(adapter, ifa->ifa_address,
3276 NX_IP_DOWN);
3277 ret = true;
3278 break;
3279 }
3280 }
3281 }
3282 out:
3283 return ret;
3284 }
3285
3286 static void
3287 netxen_config_indev_addr(struct netxen_adapter *adapter,
3288 struct net_device *dev, unsigned long event)
3289 {
3290 struct in_device *indev;
3291
3292 if (!netxen_destip_supported(adapter))
3293 return;
3294
3295 indev = in_dev_get(dev);
3296 if (!indev)
3297 return;
3298
3299 for_ifa(indev) {
3300 switch (event) {
3301 case NETDEV_UP:
3302 netxen_list_config_ip(adapter, ifa, NX_IP_UP);
3303 break;
3304 case NETDEV_DOWN:
3305 netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
3306 break;
3307 default:
3308 break;
3309 }
3310 } endfor_ifa(indev);
3311
3312 in_dev_put(indev);
3313 }
3314
3315 static void
3316 netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3317
3318 {
3319 struct netxen_adapter *adapter = netdev_priv(netdev);
3320 struct nx_ip_list *pos, *tmp_pos;
3321 unsigned long ip_event;
3322
3323 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3324 netxen_config_indev_addr(adapter, netdev, event);
3325
3326 list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
3327 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3328 }
3329 }
3330
3331 static inline bool
3332 netxen_config_checkdev(struct net_device *dev)
3333 {
3334 struct netxen_adapter *adapter;
3335
3336 if (!is_netxen_netdev(dev))
3337 return false;
3338 adapter = netdev_priv(dev);
3339 if (!adapter)
3340 return false;
3341 if (!netxen_destip_supported(adapter))
3342 return false;
3343 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3344 return false;
3345
3346 return true;
3347 }
3348
3349 /**
3350 * netxen_config_master - configure addresses based on master
3351 * @dev: netxen device
3352 * @event: netdev event
3353 */
3354 static void netxen_config_master(struct net_device *dev, unsigned long event)
3355 {
3356 struct net_device *master, *slave;
3357 struct netxen_adapter *adapter = netdev_priv(dev);
3358
3359 rcu_read_lock();
3360 master = netdev_master_upper_dev_get_rcu(dev);
3361 /*
3362 * This is the case where the netxen nic is being
3363 * enslaved and is dev_open()ed in bond_enslave()
3364 * Now we should program the bond's (and its vlans')
3365 * addresses in the netxen NIC.
3366 */
3367 if (master && netif_is_bond_master(master) &&
3368 !netif_is_bond_slave(dev)) {
3369 netxen_config_indev_addr(adapter, master, event);
3370 for_each_netdev_rcu(&init_net, slave)
3371 if (slave->priv_flags & IFF_802_1Q_VLAN &&
3372 vlan_dev_real_dev(slave) == master)
3373 netxen_config_indev_addr(adapter, slave, event);
3374 }
3375 rcu_read_unlock();
3376 /*
3377 * This is the case where the netxen nic is being
3378 * released and is dev_close()ed in bond_release()
3379 * just before IFF_BONDING is stripped.
3380 */
3381 if (!master && dev->priv_flags & IFF_BONDING)
3382 netxen_free_ip_list(adapter, true);
3383 }
3384
3385 static int netxen_netdev_event(struct notifier_block *this,
3386 unsigned long event, void *ptr)
3387 {
3388 struct netxen_adapter *adapter;
3389 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3390 struct net_device *orig_dev = dev;
3391 struct net_device *slave;
3392
3393 recheck:
3394 if (dev == NULL)
3395 goto done;
3396
3397 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3398 dev = vlan_dev_real_dev(dev);
3399 goto recheck;
3400 }
3401 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3402 /* If this is a bonding device, look for netxen-based slaves*/
3403 if (netif_is_bond_master(dev)) {
3404 rcu_read_lock();
3405 for_each_netdev_in_bond_rcu(dev, slave) {
3406 if (!netxen_config_checkdev(slave))
3407 continue;
3408 adapter = netdev_priv(slave);
3409 netxen_config_indev_addr(adapter,
3410 orig_dev, event);
3411 }
3412 rcu_read_unlock();
3413 } else {
3414 if (!netxen_config_checkdev(dev))
3415 goto done;
3416 adapter = netdev_priv(dev);
3417 /* Act only if the actual netxen is the target */
3418 if (orig_dev == dev)
3419 netxen_config_master(dev, event);
3420 netxen_config_indev_addr(adapter, orig_dev, event);
3421 }
3422 }
3423 done:
3424 return NOTIFY_DONE;
3425 }
3426
3427 static int
3428 netxen_inetaddr_event(struct notifier_block *this,
3429 unsigned long event, void *ptr)
3430 {
3431 struct netxen_adapter *adapter;
3432 struct net_device *dev, *slave;
3433 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3434 unsigned long ip_event;
3435
3436 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3437 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3438 recheck:
3439 if (dev == NULL)
3440 goto done;
3441
3442 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3443 dev = vlan_dev_real_dev(dev);
3444 goto recheck;
3445 }
3446 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3447 /* If this is a bonding device, look for netxen-based slaves*/
3448 if (netif_is_bond_master(dev)) {
3449 rcu_read_lock();
3450 for_each_netdev_in_bond_rcu(dev, slave) {
3451 if (!netxen_config_checkdev(slave))
3452 continue;
3453 adapter = netdev_priv(slave);
3454 netxen_list_config_ip(adapter, ifa, ip_event);
3455 }
3456 rcu_read_unlock();
3457 } else {
3458 if (!netxen_config_checkdev(dev))
3459 goto done;
3460 adapter = netdev_priv(dev);
3461 netxen_list_config_ip(adapter, ifa, ip_event);
3462 }
3463 }
3464 done:
3465 return NOTIFY_DONE;
3466 }
3467
3468 static struct notifier_block netxen_netdev_cb = {
3469 .notifier_call = netxen_netdev_event,
3470 };
3471
3472 static struct notifier_block netxen_inetaddr_cb = {
3473 .notifier_call = netxen_inetaddr_event,
3474 };
3475 #else
3476 static void
3477 netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3478 { }
3479 static void
3480 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3481 { }
3482 #endif
3483
3484 static const struct pci_error_handlers netxen_err_handler = {
3485 .error_detected = netxen_io_error_detected,
3486 .slot_reset = netxen_io_slot_reset,
3487 .resume = netxen_io_resume,
3488 };
3489
3490 static struct pci_driver netxen_driver = {
3491 .name = netxen_nic_driver_name,
3492 .id_table = netxen_pci_tbl,
3493 .probe = netxen_nic_probe,
3494 .remove = netxen_nic_remove,
3495 #ifdef CONFIG_PM
3496 .suspend = netxen_nic_suspend,
3497 .resume = netxen_nic_resume,
3498 #endif
3499 .shutdown = netxen_nic_shutdown,
3500 .err_handler = &netxen_err_handler
3501 };
3502
3503 static int __init netxen_init_module(void)
3504 {
3505 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3506
3507 #ifdef CONFIG_INET
3508 register_netdevice_notifier(&netxen_netdev_cb);
3509 register_inetaddr_notifier(&netxen_inetaddr_cb);
3510 #endif
3511 return pci_register_driver(&netxen_driver);
3512 }
3513
3514 module_init(netxen_init_module);
3515
3516 static void __exit netxen_exit_module(void)
3517 {
3518 pci_unregister_driver(&netxen_driver);
3519
3520 #ifdef CONFIG_INET
3521 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3522 unregister_netdevice_notifier(&netxen_netdev_cb);
3523 #endif
3524 }
3525
3526 module_exit(netxen_exit_module);
Linux with added FPC-III support