1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2003 - 2009 NetXen, Inc.
4 * Copyright (C) 2009 - QLogic Corporation.
5 * All rights reserved.
6 */
7
8 #include <linux/slab.h>
9 #include <linux/vmalloc.h>
10 #include <linux/interrupt.h>
11 #include "netxen_nic_hw.h"
12
13 #include "netxen_nic.h"
14
15 #include <linux/dma-mapping.h>
16 #include <linux/if_vlan.h>
17 #include <net/ip.h>
18 #include <linux/ipv6.h>
19 #include <linux/inetdevice.h>
20 #include <linux/sysfs.h>
21 #include <linux/aer.h>
22
23 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
24 MODULE_LICENSE("GPL");
25 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
26 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
27
28 char netxen_nic_driver_name[] = "netxen_nic";
29 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
30 NETXEN_NIC_LINUX_VERSIONID;
31
32 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
33
34 /* Default to restricted 1G auto-neg mode */
35 static int wol_port_mode = 5;
36
37 static int use_msi = 1;
38
39 static int use_msi_x = 1;
40
41 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
42 module_param(auto_fw_reset, int, 0644);
43 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
44
45 static int netxen_nic_probe(struct pci_dev *pdev,
46 const struct pci_device_id *ent);
47 static void netxen_nic_remove(struct pci_dev *pdev);
48 static int netxen_nic_open(struct net_device *netdev);
49 static int netxen_nic_close(struct net_device *netdev);
50 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
51 struct net_device *);
52 static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue);
53 static void netxen_tx_timeout_task(struct work_struct *work);
54 static void netxen_fw_poll_work(struct work_struct *work);
55 static void netxen_schedule_work(struct netxen_adapter *adapter,
56 work_func_t func, int delay);
57 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
58 static int netxen_nic_poll(struct napi_struct *napi, int budget);
59
60 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
61 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
62 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
63 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
64 static int nx_dev_request_aer(struct netxen_adapter *adapter);
65 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
66 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
67
68 static irqreturn_t netxen_intr(int irq, void *data);
69 static irqreturn_t netxen_msi_intr(int irq, void *data);
70 static irqreturn_t netxen_msix_intr(int irq, void *data);
71
72 static void netxen_free_ip_list(struct netxen_adapter *, bool);
73 static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
74 static void netxen_nic_get_stats(struct net_device *dev,
75 struct rtnl_link_stats64 *stats);
76 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
77
78 /* PCI Device ID Table */
79 #define ENTRY(device) \
80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
82
83 static const struct pci_device_id netxen_pci_tbl[] = {
84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
92 {0,}
93 };
94
95 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
97 static uint32_t crb_cmd_producer[4] = {
98 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
99 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
100 };
101
102 void
netxen_nic_update_cmd_producer(struct netxen_adapter * adapter,struct nx_host_tx_ring * tx_ring)103 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
104 struct nx_host_tx_ring *tx_ring)
105 {
106 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
107 }
108
109 static uint32_t crb_cmd_consumer[4] = {
110 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
111 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
112 };
113
114 static inline void
netxen_nic_update_cmd_consumer(struct netxen_adapter * adapter,struct nx_host_tx_ring * tx_ring)115 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
116 struct nx_host_tx_ring *tx_ring)
117 {
118 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
119 }
120
121 static uint32_t msi_tgt_status[8] = {
122 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
123 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
124 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
125 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
126 };
127
128 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
129
netxen_nic_disable_int(struct nx_host_sds_ring * sds_ring)130 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
131 {
132 struct netxen_adapter *adapter = sds_ring->adapter;
133
134 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
135 }
136
netxen_nic_enable_int(struct nx_host_sds_ring * sds_ring)137 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
138 {
139 struct netxen_adapter *adapter = sds_ring->adapter;
140
141 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
142
143 if (!NETXEN_IS_MSI_FAMILY(adapter))
144 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
145 }
146
147 static int
netxen_alloc_sds_rings(struct netxen_recv_context * recv_ctx,int count)148 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
149 {
150 int size = sizeof(struct nx_host_sds_ring) * count;
151
152 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
153
154 return recv_ctx->sds_rings == NULL;
155 }
156
157 static void
netxen_free_sds_rings(struct netxen_recv_context * recv_ctx)158 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
159 {
160 kfree(recv_ctx->sds_rings);
161 recv_ctx->sds_rings = NULL;
162 }
163
164 static int
netxen_napi_add(struct netxen_adapter * adapter,struct net_device * netdev)165 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
166 {
167 int ring;
168 struct nx_host_sds_ring *sds_ring;
169 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
170
171 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
172 return -ENOMEM;
173
174 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
175 sds_ring = &recv_ctx->sds_rings[ring];
176 netif_napi_add(netdev, &sds_ring->napi, netxen_nic_poll);
177 }
178
179 return 0;
180 }
181
182 static void
netxen_napi_del(struct netxen_adapter * adapter)183 netxen_napi_del(struct netxen_adapter *adapter)
184 {
185 int ring;
186 struct nx_host_sds_ring *sds_ring;
187 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
188
189 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
190 sds_ring = &recv_ctx->sds_rings[ring];
191 netif_napi_del(&sds_ring->napi);
192 }
193
194 netxen_free_sds_rings(&adapter->recv_ctx);
195 }
196
197 static void
netxen_napi_enable(struct netxen_adapter * adapter)198 netxen_napi_enable(struct netxen_adapter *adapter)
199 {
200 int ring;
201 struct nx_host_sds_ring *sds_ring;
202 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
203
204 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
205 sds_ring = &recv_ctx->sds_rings[ring];
206 napi_enable(&sds_ring->napi);
207 netxen_nic_enable_int(sds_ring);
208 }
209 }
210
211 static void
netxen_napi_disable(struct netxen_adapter * adapter)212 netxen_napi_disable(struct netxen_adapter *adapter)
213 {
214 int ring;
215 struct nx_host_sds_ring *sds_ring;
216 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
217
218 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
219 sds_ring = &recv_ctx->sds_rings[ring];
220 netxen_nic_disable_int(sds_ring);
221 napi_synchronize(&sds_ring->napi);
222 napi_disable(&sds_ring->napi);
223 }
224 }
225
nx_set_dma_mask(struct netxen_adapter * adapter)226 static int nx_set_dma_mask(struct netxen_adapter *adapter)
227 {
228 struct pci_dev *pdev = adapter->pdev;
229 uint64_t mask, cmask;
230
231 adapter->pci_using_dac = 0;
232
233 mask = DMA_BIT_MASK(32);
234 cmask = DMA_BIT_MASK(32);
235
236 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
237 #ifndef CONFIG_IA64
238 mask = DMA_BIT_MASK(35);
239 #endif
240 } else {
241 mask = DMA_BIT_MASK(39);
242 cmask = mask;
243 }
244
245 if (dma_set_mask(&pdev->dev, mask) == 0 &&
246 dma_set_coherent_mask(&pdev->dev, cmask) == 0) {
247 adapter->pci_using_dac = 1;
248 return 0;
249 }
250
251 return -EIO;
252 }
253
254 /* Update addressable range if firmware supports it */
255 static int
nx_update_dma_mask(struct netxen_adapter * adapter)256 nx_update_dma_mask(struct netxen_adapter *adapter)
257 {
258 int change, shift, err;
259 uint64_t mask, old_mask, old_cmask;
260 struct pci_dev *pdev = adapter->pdev;
261
262 change = 0;
263
264 shift = NXRD32(adapter, CRB_DMA_SHIFT);
265 if (shift > 32)
266 return 0;
267
268 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
269 change = 1;
270 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
271 change = 1;
272
273 if (change) {
274 old_mask = pdev->dma_mask;
275 old_cmask = pdev->dev.coherent_dma_mask;
276
277 mask = DMA_BIT_MASK(32+shift);
278
279 err = dma_set_mask(&pdev->dev, mask);
280 if (err)
281 goto err_out;
282
283 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
284
285 err = dma_set_coherent_mask(&pdev->dev, mask);
286 if (err)
287 goto err_out;
288 }
289 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
290 }
291
292 return 0;
293
294 err_out:
295 dma_set_mask(&pdev->dev, old_mask);
296 dma_set_coherent_mask(&pdev->dev, old_cmask);
297 return err;
298 }
299
300 static int
netxen_check_hw_init(struct netxen_adapter * adapter,int first_boot)301 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
302 {
303 u32 val, timeout;
304
305 if (first_boot == 0x55555555) {
306 /* This is the first boot after power up */
307 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
308
309 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
310 return 0;
311
312 /* PCI bus master workaround */
313 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
314 if (!(first_boot & 0x4)) {
315 first_boot |= 0x4;
316 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
317 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
318 }
319
320 /* This is the first boot after power up */
321 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
322 if (first_boot != 0x80000f) {
323 /* clear the register for future unloads/loads */
324 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
325 return -EIO;
326 }
327
328 /* Start P2 boot loader */
329 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
330 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
331 timeout = 0;
332 do {
333 msleep(1);
334 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
335
336 if (++timeout > 5000)
337 return -EIO;
338
339 } while (val == NETXEN_BDINFO_MAGIC);
340 }
341 return 0;
342 }
343
netxen_set_port_mode(struct netxen_adapter * adapter)344 static void netxen_set_port_mode(struct netxen_adapter *adapter)
345 {
346 u32 val, data;
347
348 val = adapter->ahw.board_type;
349 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
350 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
351 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
352 data = NETXEN_PORT_MODE_802_3_AP;
353 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
354 } else if (port_mode == NETXEN_PORT_MODE_XG) {
355 data = NETXEN_PORT_MODE_XG;
356 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
357 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
358 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
359 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
360 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
361 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
362 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
363 } else {
364 data = NETXEN_PORT_MODE_AUTO_NEG;
365 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
366 }
367
368 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
369 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
370 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
371 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
372 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
373 }
374 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
375 }
376 }
377
378 #define PCI_CAP_ID_GEN 0x10
379
netxen_pcie_strap_init(struct netxen_adapter * adapter)380 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
381 {
382 u32 pdevfuncsave;
383 u32 c8c9value = 0;
384 u32 chicken = 0;
385 u32 control = 0;
386 int i, pos;
387 struct pci_dev *pdev;
388
389 pdev = adapter->pdev;
390
391 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
392 /* clear chicken3.25:24 */
393 chicken &= 0xFCFFFFFF;
394 /*
395 * if gen1 and B0, set F1020 - if gen 2, do nothing
396 * if gen2 set to F1000
397 */
398 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
399 if (pos == 0xC0) {
400 pci_read_config_dword(pdev, pos + 0x10, &control);
401 if ((control & 0x000F0000) != 0x00020000) {
402 /* set chicken3.24 if gen1 */
403 chicken |= 0x01000000;
404 }
405 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
406 c8c9value = 0xF1000;
407 } else {
408 /* set chicken3.24 if gen1 */
409 chicken |= 0x01000000;
410 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
411 if (adapter->ahw.revision_id == NX_P3_B0)
412 c8c9value = 0xF1020;
413 else
414 c8c9value = 0;
415 }
416
417 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
418
419 if (!c8c9value)
420 return;
421
422 pdevfuncsave = pdev->devfn;
423 if (pdevfuncsave & 0x07)
424 return;
425
426 for (i = 0; i < 8; i++) {
427 pci_read_config_dword(pdev, pos + 8, &control);
428 pci_read_config_dword(pdev, pos + 8, &control);
429 pci_write_config_dword(pdev, pos + 8, c8c9value);
430 pdev->devfn++;
431 }
432 pdev->devfn = pdevfuncsave;
433 }
434
netxen_set_msix_bit(struct pci_dev * pdev,int enable)435 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
436 {
437 u32 control;
438
439 if (pdev->msix_cap) {
440 pci_read_config_dword(pdev, pdev->msix_cap, &control);
441 if (enable)
442 control |= PCI_MSIX_FLAGS_ENABLE;
443 else
444 control = 0;
445 pci_write_config_dword(pdev, pdev->msix_cap, control);
446 }
447 }
448
netxen_init_msix_entries(struct netxen_adapter * adapter,int count)449 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
450 {
451 int i;
452
453 for (i = 0; i < count; i++)
454 adapter->msix_entries[i].entry = i;
455 }
456
457 static int
netxen_read_mac_addr(struct netxen_adapter * adapter)458 netxen_read_mac_addr(struct netxen_adapter *adapter)
459 {
460 int i;
461 unsigned char *p;
462 u64 mac_addr;
463 struct net_device *netdev = adapter->netdev;
464 struct pci_dev *pdev = adapter->pdev;
465 u8 addr[ETH_ALEN];
466
467 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
468 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
469 return -EIO;
470 } else {
471 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
472 return -EIO;
473 }
474
475 p = (unsigned char *)&mac_addr;
476 for (i = 0; i < 6; i++)
477 addr[i] = *(p + 5 - i);
478 eth_hw_addr_set(netdev, addr);
479
480 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
481
482 /* set station address */
483
484 if (!is_valid_ether_addr(netdev->dev_addr))
485 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
486
487 return 0;
488 }
489
netxen_nic_set_mac(struct net_device * netdev,void * p)490 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
491 {
492 struct netxen_adapter *adapter = netdev_priv(netdev);
493 struct sockaddr *addr = p;
494
495 if (!is_valid_ether_addr(addr->sa_data))
496 return -EADDRNOTAVAIL;
497
498 if (netif_running(netdev)) {
499 netif_device_detach(netdev);
500 netxen_napi_disable(adapter);
501 }
502
503 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
504 eth_hw_addr_set(netdev, addr->sa_data);
505 adapter->macaddr_set(adapter, addr->sa_data);
506
507 if (netif_running(netdev)) {
508 netif_device_attach(netdev);
509 netxen_napi_enable(adapter);
510 }
511 return 0;
512 }
513
netxen_set_multicast_list(struct net_device * dev)514 static void netxen_set_multicast_list(struct net_device *dev)
515 {
516 struct netxen_adapter *adapter = netdev_priv(dev);
517
518 adapter->set_multi(dev);
519 }
520
netxen_fix_features(struct net_device * dev,netdev_features_t features)521 static netdev_features_t netxen_fix_features(struct net_device *dev,
522 netdev_features_t features)
523 {
524 if (!(features & NETIF_F_RXCSUM)) {
525 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
526
527 features &= ~NETIF_F_LRO;
528 }
529
530 return features;
531 }
532
netxen_set_features(struct net_device * dev,netdev_features_t features)533 static int netxen_set_features(struct net_device *dev,
534 netdev_features_t features)
535 {
536 struct netxen_adapter *adapter = netdev_priv(dev);
537 int hw_lro;
538
539 if (!((dev->features ^ features) & NETIF_F_LRO))
540 return 0;
541
542 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
543 : NETXEN_NIC_LRO_DISABLED;
544
545 if (netxen_config_hw_lro(adapter, hw_lro))
546 return -EIO;
547
548 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
549 return -EIO;
550
551 return 0;
552 }
553
554 static const struct net_device_ops netxen_netdev_ops = {
555 .ndo_open = netxen_nic_open,
556 .ndo_stop = netxen_nic_close,
557 .ndo_start_xmit = netxen_nic_xmit_frame,
558 .ndo_get_stats64 = netxen_nic_get_stats,
559 .ndo_validate_addr = eth_validate_addr,
560 .ndo_set_rx_mode = netxen_set_multicast_list,
561 .ndo_set_mac_address = netxen_nic_set_mac,
562 .ndo_change_mtu = netxen_nic_change_mtu,
563 .ndo_tx_timeout = netxen_tx_timeout,
564 .ndo_fix_features = netxen_fix_features,
565 .ndo_set_features = netxen_set_features,
566 };
567
netxen_set_interrupt_mode(struct netxen_adapter * adapter,u32 mode)568 static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
569 u32 mode)
570 {
571 NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
572 }
573
netxen_get_interrupt_mode(struct netxen_adapter * adapter)574 static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
575 {
576 return NXRD32(adapter, NETXEN_INTR_MODE_REG);
577 }
578
579 static void
netxen_initialize_interrupt_registers(struct netxen_adapter * adapter)580 netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
581 {
582 struct netxen_legacy_intr_set *legacy_intrp;
583 u32 tgt_status_reg, int_state_reg;
584
585 if (adapter->ahw.revision_id >= NX_P3_B0)
586 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
587 else
588 legacy_intrp = &legacy_intr[0];
589
590 tgt_status_reg = legacy_intrp->tgt_status_reg;
591 int_state_reg = ISR_INT_STATE_REG;
592
593 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
594 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
595 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
596 legacy_intrp->tgt_mask_reg);
597 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
598 legacy_intrp->pci_int_reg);
599 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
600
601 if (adapter->ahw.revision_id >= NX_P3_B1)
602 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
603 int_state_reg);
604 else
605 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
606 CRB_INT_VECTOR);
607 }
608
netxen_setup_msi_interrupts(struct netxen_adapter * adapter,int num_msix)609 static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
610 int num_msix)
611 {
612 struct pci_dev *pdev = adapter->pdev;
613 u32 value;
614 int err;
615
616 if (adapter->msix_supported) {
617 netxen_init_msix_entries(adapter, num_msix);
618 err = pci_enable_msix_range(pdev, adapter->msix_entries,
619 num_msix, num_msix);
620 if (err > 0) {
621 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
622 netxen_set_msix_bit(pdev, 1);
623
624 if (adapter->rss_supported)
625 adapter->max_sds_rings = num_msix;
626
627 dev_info(&pdev->dev, "using msi-x interrupts\n");
628 return 0;
629 }
630 /* fall through for msi */
631 }
632
633 if (use_msi && !pci_enable_msi(pdev)) {
634 value = msi_tgt_status[adapter->ahw.pci_func];
635 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
636 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
637 adapter->msix_entries[0].vector = pdev->irq;
638 dev_info(&pdev->dev, "using msi interrupts\n");
639 return 0;
640 }
641
642 dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
643 return -EIO;
644 }
645
netxen_setup_intr(struct netxen_adapter * adapter)646 static int netxen_setup_intr(struct netxen_adapter *adapter)
647 {
648 struct pci_dev *pdev = adapter->pdev;
649 int num_msix;
650
651 if (adapter->rss_supported)
652 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
653 MSIX_ENTRIES_PER_ADAPTER : 2;
654 else
655 num_msix = 1;
656
657 adapter->max_sds_rings = 1;
658 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
659
660 netxen_initialize_interrupt_registers(adapter);
661 netxen_set_msix_bit(pdev, 0);
662
663 if (adapter->portnum == 0) {
664 if (!netxen_setup_msi_interrupts(adapter, num_msix))
665 netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
666 else
667 netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
668 } else {
669 if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
670 netxen_setup_msi_interrupts(adapter, num_msix)) {
671 dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
672 return -EIO;
673 }
674 }
675
676 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
677 adapter->msix_entries[0].vector = pdev->irq;
678 dev_info(&pdev->dev, "using legacy interrupts\n");
679 }
680 return 0;
681 }
682
683 static void
netxen_teardown_intr(struct netxen_adapter * adapter)684 netxen_teardown_intr(struct netxen_adapter *adapter)
685 {
686 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
687 pci_disable_msix(adapter->pdev);
688 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
689 pci_disable_msi(adapter->pdev);
690 }
691
692 static void
netxen_cleanup_pci_map(struct netxen_adapter * adapter)693 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
694 {
695 if (adapter->ahw.db_base != NULL)
696 iounmap(adapter->ahw.db_base);
697 if (adapter->ahw.pci_base0 != NULL)
698 iounmap(adapter->ahw.pci_base0);
699 if (adapter->ahw.pci_base1 != NULL)
700 iounmap(adapter->ahw.pci_base1);
701 if (adapter->ahw.pci_base2 != NULL)
702 iounmap(adapter->ahw.pci_base2);
703 }
704
705 static int
netxen_setup_pci_map(struct netxen_adapter * adapter)706 netxen_setup_pci_map(struct netxen_adapter *adapter)
707 {
708 void __iomem *db_ptr = NULL;
709
710 resource_size_t mem_base, db_base;
711 unsigned long mem_len, db_len = 0;
712
713 struct pci_dev *pdev = adapter->pdev;
714 int pci_func = adapter->ahw.pci_func;
715 struct netxen_hardware_context *ahw = &adapter->ahw;
716
717 int err = 0;
718
719 /*
720 * Set the CRB window to invalid. If any register in window 0 is
721 * accessed it should set the window to 0 and then reset it to 1.
722 */
723 adapter->ahw.crb_win = -1;
724 adapter->ahw.ocm_win = -1;
725
726 /* remap phys address */
727 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
728 mem_len = pci_resource_len(pdev, 0);
729
730 /* 128 Meg of memory */
731 if (mem_len == NETXEN_PCI_128MB_SIZE) {
732
733 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
734 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
735 SECOND_PAGE_GROUP_SIZE);
736 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
737 THIRD_PAGE_GROUP_SIZE);
738 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
739 ahw->pci_base2 == NULL) {
740 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
741 err = -EIO;
742 goto err_out;
743 }
744
745 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
746
747 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
748
749 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
750 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
751 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
752 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
753 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
754 err = -EIO;
755 goto err_out;
756 }
757
758 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
759
760 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
761 if (ahw->pci_base0 == NULL) {
762 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
763 return -EIO;
764 }
765 ahw->pci_len0 = mem_len;
766 } else {
767 return -EIO;
768 }
769
770 netxen_setup_hwops(adapter);
771
772 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
773
774 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
775 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
776 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
777
778 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
779 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
780 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
781 }
782
783 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
784 goto skip_doorbell;
785
786 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
787 db_len = pci_resource_len(pdev, 4);
788
789 if (db_len == 0) {
790 printk(KERN_ERR "%s: doorbell is disabled\n",
791 netxen_nic_driver_name);
792 err = -EIO;
793 goto err_out;
794 }
795
796 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
797 if (!db_ptr) {
798 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
799 netxen_nic_driver_name);
800 err = -EIO;
801 goto err_out;
802 }
803
804 skip_doorbell:
805 adapter->ahw.db_base = db_ptr;
806 adapter->ahw.db_len = db_len;
807 return 0;
808
809 err_out:
810 netxen_cleanup_pci_map(adapter);
811 return err;
812 }
813
814 static void
netxen_check_options(struct netxen_adapter * adapter)815 netxen_check_options(struct netxen_adapter *adapter)
816 {
817 u32 fw_major, fw_minor, fw_build, prev_fw_version;
818 char brd_name[NETXEN_MAX_SHORT_NAME];
819 char serial_num[32];
820 int i, offset, val, err;
821 __le32 *ptr32;
822 struct pci_dev *pdev = adapter->pdev;
823
824 adapter->driver_mismatch = 0;
825
826 ptr32 = (__le32 *)&serial_num;
827 offset = NX_FW_SERIAL_NUM_OFFSET;
828 for (i = 0; i < 8; i++) {
829 err = netxen_rom_fast_read(adapter, offset, &val);
830 if (err) {
831 dev_err(&pdev->dev, "error reading board info\n");
832 adapter->driver_mismatch = 1;
833 return;
834 }
835 ptr32[i] = cpu_to_le32(val);
836 offset += sizeof(u32);
837 }
838
839 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
840 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
841 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
842 prev_fw_version = adapter->fw_version;
843 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
844
845 /* Get FW Mini Coredump template and store it */
846 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
847 if (adapter->mdump.md_template == NULL ||
848 adapter->fw_version > prev_fw_version) {
849 kfree(adapter->mdump.md_template);
850 adapter->mdump.md_template = NULL;
851 err = netxen_setup_minidump(adapter);
852 if (err)
853 dev_err(&adapter->pdev->dev,
854 "Failed to setup minidump rcode = %d\n", err);
855 }
856 }
857
858 if (adapter->portnum == 0) {
859 if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
860 brd_name))
861 strcpy(serial_num, "Unknown");
862
863 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
864 module_name(THIS_MODULE),
865 brd_name, serial_num, adapter->ahw.revision_id);
866 }
867
868 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
869 adapter->driver_mismatch = 1;
870 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
871 fw_major, fw_minor, fw_build);
872 return;
873 }
874
875 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
876 i = NXRD32(adapter, NETXEN_SRE_MISC);
877 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
878 }
879
880 dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
881 NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
882 adapter->ahw.cut_through ? "cut-through" : "legacy");
883
884 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
885 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
886
887 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
888 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
889 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
890 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
891 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
892 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
893 }
894
895 adapter->msix_supported = 0;
896 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
897 adapter->msix_supported = !!use_msi_x;
898 adapter->rss_supported = !!use_msi_x;
899 } else {
900 u32 flashed_ver = 0;
901 netxen_rom_fast_read(adapter,
902 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
903 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
904
905 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
906 switch (adapter->ahw.board_type) {
907 case NETXEN_BRDTYPE_P2_SB31_10G:
908 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
909 adapter->msix_supported = !!use_msi_x;
910 adapter->rss_supported = !!use_msi_x;
911 break;
912 default:
913 break;
914 }
915 }
916 }
917
918 adapter->num_txd = MAX_CMD_DESCRIPTORS;
919
920 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
921 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
922 adapter->max_rds_rings = 3;
923 } else {
924 adapter->num_lro_rxd = 0;
925 adapter->max_rds_rings = 2;
926 }
927 }
928
929 static int
netxen_start_firmware(struct netxen_adapter * adapter)930 netxen_start_firmware(struct netxen_adapter *adapter)
931 {
932 int val, err, first_boot;
933 struct pci_dev *pdev = adapter->pdev;
934
935 /* required for NX2031 dummy dma */
936 err = nx_set_dma_mask(adapter);
937 if (err)
938 return err;
939
940 err = netxen_can_start_firmware(adapter);
941
942 if (err < 0)
943 return err;
944
945 if (!err)
946 goto wait_init;
947
948 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
949
950 err = netxen_check_hw_init(adapter, first_boot);
951 if (err) {
952 dev_err(&pdev->dev, "error in init HW init sequence\n");
953 return err;
954 }
955
956 netxen_request_firmware(adapter);
957
958 err = netxen_need_fw_reset(adapter);
959 if (err < 0)
960 goto err_out;
961 if (err == 0)
962 goto pcie_strap_init;
963
964 if (first_boot != 0x55555555) {
965 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
966 netxen_pinit_from_rom(adapter);
967 msleep(1);
968 }
969
970 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
971 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
972 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
973
974 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
975 netxen_set_port_mode(adapter);
976
977 err = netxen_load_firmware(adapter);
978 if (err)
979 goto err_out;
980
981 netxen_release_firmware(adapter);
982
983 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
984
985 /* Initialize multicast addr pool owners */
986 val = 0x7654;
987 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
988 val |= 0x0f000000;
989 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
990
991 }
992
993 err = netxen_init_dummy_dma(adapter);
994 if (err)
995 goto err_out;
996
997 /*
998 * Tell the hardware our version number.
999 */
1000 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
1001 | ((_NETXEN_NIC_LINUX_MINOR << 8))
1002 | (_NETXEN_NIC_LINUX_SUBVERSION);
1003 NXWR32(adapter, CRB_DRIVER_VERSION, val);
1004
1005 pcie_strap_init:
1006 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1007 netxen_pcie_strap_init(adapter);
1008
1009 wait_init:
1010 /* Handshake with the card before we register the devices. */
1011 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
1012 if (err) {
1013 netxen_free_dummy_dma(adapter);
1014 goto err_out;
1015 }
1016
1017 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1018
1019 nx_update_dma_mask(adapter);
1020
1021 netxen_check_options(adapter);
1022
1023 adapter->need_fw_reset = 0;
1024
1025 /* fall through and release firmware */
1026
1027 err_out:
1028 netxen_release_firmware(adapter);
1029 return err;
1030 }
1031
1032 static int
netxen_nic_request_irq(struct netxen_adapter * adapter)1033 netxen_nic_request_irq(struct netxen_adapter *adapter)
1034 {
1035 irq_handler_t handler;
1036 struct nx_host_sds_ring *sds_ring;
1037 int err, ring;
1038
1039 unsigned long flags = 0;
1040 struct net_device *netdev = adapter->netdev;
1041 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1042
1043 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1044 handler = netxen_msix_intr;
1045 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1046 handler = netxen_msi_intr;
1047 else {
1048 flags |= IRQF_SHARED;
1049 handler = netxen_intr;
1050 }
1051 adapter->irq = netdev->irq;
1052
1053 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1054 sds_ring = &recv_ctx->sds_rings[ring];
1055 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1056 err = request_irq(sds_ring->irq, handler,
1057 flags, sds_ring->name, sds_ring);
1058 if (err)
1059 return err;
1060 }
1061
1062 return 0;
1063 }
1064
1065 static void
netxen_nic_free_irq(struct netxen_adapter * adapter)1066 netxen_nic_free_irq(struct netxen_adapter *adapter)
1067 {
1068 int ring;
1069 struct nx_host_sds_ring *sds_ring;
1070
1071 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1072
1073 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1074 sds_ring = &recv_ctx->sds_rings[ring];
1075 free_irq(sds_ring->irq, sds_ring);
1076 }
1077 }
1078
1079 static void
netxen_nic_init_coalesce_defaults(struct netxen_adapter * adapter)1080 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1081 {
1082 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1083 adapter->coal.normal.data.rx_time_us =
1084 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1085 adapter->coal.normal.data.rx_packets =
1086 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1087 adapter->coal.normal.data.tx_time_us =
1088 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1089 adapter->coal.normal.data.tx_packets =
1090 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1091 }
1092
1093 /* with rtnl_lock */
1094 static int
__netxen_nic_up(struct netxen_adapter * adapter,struct net_device * netdev)1095 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1096 {
1097 int err;
1098
1099 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1100 return -EIO;
1101
1102 err = adapter->init_port(adapter, adapter->physical_port);
1103 if (err) {
1104 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1105 netxen_nic_driver_name, adapter->portnum);
1106 return err;
1107 }
1108 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1109 adapter->macaddr_set(adapter, adapter->mac_addr);
1110
1111 adapter->set_multi(netdev);
1112 adapter->set_mtu(adapter, netdev->mtu);
1113
1114 adapter->ahw.linkup = 0;
1115
1116 if (adapter->max_sds_rings > 1)
1117 netxen_config_rss(adapter, 1);
1118
1119 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1120 netxen_config_intr_coalesce(adapter);
1121
1122 if (netdev->features & NETIF_F_LRO)
1123 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1124
1125 netxen_napi_enable(adapter);
1126
1127 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1128 netxen_linkevent_request(adapter, 1);
1129 else
1130 netxen_nic_set_link_parameters(adapter);
1131
1132 set_bit(__NX_DEV_UP, &adapter->state);
1133 return 0;
1134 }
1135
1136 /* Usage: During resume and firmware recovery module.*/
1137
1138 static inline int
netxen_nic_up(struct netxen_adapter * adapter,struct net_device * netdev)1139 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1140 {
1141 int err = 0;
1142
1143 rtnl_lock();
1144 if (netif_running(netdev))
1145 err = __netxen_nic_up(adapter, netdev);
1146 rtnl_unlock();
1147
1148 return err;
1149 }
1150
1151 /* with rtnl_lock */
1152 static void
__netxen_nic_down(struct netxen_adapter * adapter,struct net_device * netdev)1153 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1154 {
1155 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1156 return;
1157
1158 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1159 return;
1160
1161 smp_mb();
1162 netif_carrier_off(netdev);
1163 netif_tx_disable(netdev);
1164
1165 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1166 netxen_linkevent_request(adapter, 0);
1167
1168 if (adapter->stop_port)
1169 adapter->stop_port(adapter);
1170
1171 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1172 netxen_p3_free_mac_list(adapter);
1173
1174 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1175
1176 netxen_napi_disable(adapter);
1177
1178 netxen_release_tx_buffers(adapter);
1179 }
1180
1181 /* Usage: During suspend and firmware recovery module */
1182
1183 static inline void
netxen_nic_down(struct netxen_adapter * adapter,struct net_device * netdev)1184 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1185 {
1186 rtnl_lock();
1187 if (netif_running(netdev))
1188 __netxen_nic_down(adapter, netdev);
1189 rtnl_unlock();
1190
1191 }
1192
1193 static int
netxen_nic_attach(struct netxen_adapter * adapter)1194 netxen_nic_attach(struct netxen_adapter *adapter)
1195 {
1196 struct net_device *netdev = adapter->netdev;
1197 struct pci_dev *pdev = adapter->pdev;
1198 int err, ring;
1199 struct nx_host_rds_ring *rds_ring;
1200 struct nx_host_tx_ring *tx_ring;
1201 u32 capab2;
1202
1203 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1204 return 0;
1205
1206 err = netxen_init_firmware(adapter);
1207 if (err)
1208 return err;
1209
1210 adapter->flags &= ~NETXEN_FW_MSS_CAP;
1211 if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1212 capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1213 if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1214 adapter->flags |= NETXEN_FW_MSS_CAP;
1215 }
1216
1217 err = netxen_napi_add(adapter, netdev);
1218 if (err)
1219 return err;
1220
1221 err = netxen_alloc_sw_resources(adapter);
1222 if (err) {
1223 printk(KERN_ERR "%s: Error in setting sw resources\n",
1224 netdev->name);
1225 return err;
1226 }
1227
1228 err = netxen_alloc_hw_resources(adapter);
1229 if (err) {
1230 printk(KERN_ERR "%s: Error in setting hw resources\n",
1231 netdev->name);
1232 goto err_out_free_sw;
1233 }
1234
1235 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1236 tx_ring = adapter->tx_ring;
1237 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1238 crb_cmd_producer[adapter->portnum]);
1239 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1240 crb_cmd_consumer[adapter->portnum]);
1241
1242 tx_ring->producer = 0;
1243 tx_ring->sw_consumer = 0;
1244
1245 netxen_nic_update_cmd_producer(adapter, tx_ring);
1246 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1247 }
1248
1249 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1250 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1251 netxen_post_rx_buffers(adapter, ring, rds_ring);
1252 }
1253
1254 err = netxen_nic_request_irq(adapter);
1255 if (err) {
1256 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1257 netdev->name);
1258 goto err_out_free_rxbuf;
1259 }
1260
1261 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1262 netxen_nic_init_coalesce_defaults(adapter);
1263
1264 netxen_create_sysfs_entries(adapter);
1265
1266 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1267 return 0;
1268
1269 err_out_free_rxbuf:
1270 netxen_release_rx_buffers(adapter);
1271 netxen_free_hw_resources(adapter);
1272 err_out_free_sw:
1273 netxen_free_sw_resources(adapter);
1274 return err;
1275 }
1276
1277 static void
netxen_nic_detach(struct netxen_adapter * adapter)1278 netxen_nic_detach(struct netxen_adapter *adapter)
1279 {
1280 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1281 return;
1282
1283 netxen_remove_sysfs_entries(adapter);
1284
1285 netxen_free_hw_resources(adapter);
1286 netxen_release_rx_buffers(adapter);
1287 netxen_nic_free_irq(adapter);
1288 netxen_napi_del(adapter);
1289 netxen_free_sw_resources(adapter);
1290
1291 adapter->is_up = 0;
1292 }
1293
1294 int
netxen_nic_reset_context(struct netxen_adapter * adapter)1295 netxen_nic_reset_context(struct netxen_adapter *adapter)
1296 {
1297 int err = 0;
1298 struct net_device *netdev = adapter->netdev;
1299
1300 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1301 return -EBUSY;
1302
1303 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1304
1305 netif_device_detach(netdev);
1306
1307 if (netif_running(netdev))
1308 __netxen_nic_down(adapter, netdev);
1309
1310 netxen_nic_detach(adapter);
1311
1312 if (netif_running(netdev)) {
1313 err = netxen_nic_attach(adapter);
1314 if (!err)
1315 err = __netxen_nic_up(adapter, netdev);
1316
1317 if (err)
1318 goto done;
1319 }
1320
1321 netif_device_attach(netdev);
1322 }
1323
1324 done:
1325 clear_bit(__NX_RESETTING, &adapter->state);
1326 return err;
1327 }
1328
1329 static int
netxen_setup_netdev(struct netxen_adapter * adapter,struct net_device * netdev)1330 netxen_setup_netdev(struct netxen_adapter *adapter,
1331 struct net_device *netdev)
1332 {
1333 int err = 0;
1334 struct pci_dev *pdev = adapter->pdev;
1335
1336 adapter->mc_enabled = 0;
1337 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1338 adapter->max_mc_count = 38;
1339 else
1340 adapter->max_mc_count = 16;
1341
1342 netdev->netdev_ops = &netxen_netdev_ops;
1343 netdev->watchdog_timeo = 5*HZ;
1344
1345 netxen_nic_change_mtu(netdev, netdev->mtu);
1346
1347 netdev->ethtool_ops = &netxen_nic_ethtool_ops;
1348
1349 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1350 NETIF_F_RXCSUM;
1351
1352 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1353 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1354
1355 netdev->vlan_features |= netdev->hw_features;
1356
1357 if (adapter->pci_using_dac) {
1358 netdev->features |= NETIF_F_HIGHDMA;
1359 netdev->vlan_features |= NETIF_F_HIGHDMA;
1360 }
1361
1362 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1363 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
1364
1365 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1366 netdev->hw_features |= NETIF_F_LRO;
1367
1368 netdev->features |= netdev->hw_features;
1369
1370 netdev->irq = adapter->msix_entries[0].vector;
1371
1372 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1373
1374 if (netxen_read_mac_addr(adapter))
1375 dev_warn(&pdev->dev, "failed to read mac addr\n");
1376
1377 netif_carrier_off(netdev);
1378
1379 err = register_netdev(netdev);
1380 if (err) {
1381 dev_err(&pdev->dev, "failed to register net device\n");
1382 return err;
1383 }
1384
1385 return 0;
1386 }
1387
1388 #define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
1389 #define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
1390
netxen_read_ula_info(struct netxen_adapter * adapter)1391 static void netxen_read_ula_info(struct netxen_adapter *adapter)
1392 {
1393 u32 temp;
1394
1395 /* Print ULA info only once for an adapter */
1396 if (adapter->portnum != 0)
1397 return;
1398
1399 temp = NXRD32(adapter, NETXEN_ULA_KEY);
1400 switch (temp) {
1401 case NETXEN_ULA_ADAPTER_KEY:
1402 dev_info(&adapter->pdev->dev, "ULA adapter");
1403 break;
1404 case NETXEN_NON_ULA_ADAPTER_KEY:
1405 dev_info(&adapter->pdev->dev, "non ULA adapter");
1406 break;
1407 default:
1408 break;
1409 }
1410
1411 return;
1412 }
1413
1414 #ifdef CONFIG_PCIEAER
netxen_mask_aer_correctable(struct netxen_adapter * adapter)1415 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1416 {
1417 struct pci_dev *pdev = adapter->pdev;
1418 struct pci_dev *root = pdev->bus->self;
1419 u32 aer_pos;
1420
1421 /* root bus? */
1422 if (!root)
1423 return;
1424
1425 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1426 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1427 return;
1428
1429 if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
1430 return;
1431
1432 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1433 if (!aer_pos)
1434 return;
1435
1436 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1437 }
1438 #endif
1439
1440 static int
netxen_nic_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1441 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1442 {
1443 struct net_device *netdev = NULL;
1444 struct netxen_adapter *adapter = NULL;
1445 int i = 0, err;
1446 int pci_func_id = PCI_FUNC(pdev->devfn);
1447 uint8_t revision_id;
1448 u32 val;
1449
1450 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1451 pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n",
1452 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1453 return -ENODEV;
1454 }
1455
1456 if ((err = pci_enable_device(pdev)))
1457 return err;
1458
1459 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1460 err = -ENODEV;
1461 goto err_out_disable_pdev;
1462 }
1463
1464 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1465 goto err_out_disable_pdev;
1466
1467 if (NX_IS_REVISION_P3(pdev->revision))
1468 pci_enable_pcie_error_reporting(pdev);
1469
1470 pci_set_master(pdev);
1471
1472 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1473 if(!netdev) {
1474 err = -ENOMEM;
1475 goto err_out_free_res;
1476 }
1477
1478 SET_NETDEV_DEV(netdev, &pdev->dev);
1479
1480 adapter = netdev_priv(netdev);
1481 adapter->netdev = netdev;
1482 adapter->pdev = pdev;
1483 adapter->ahw.pci_func = pci_func_id;
1484
1485 revision_id = pdev->revision;
1486 adapter->ahw.revision_id = revision_id;
1487
1488 rwlock_init(&adapter->ahw.crb_lock);
1489 spin_lock_init(&adapter->ahw.mem_lock);
1490
1491 spin_lock_init(&adapter->tx_clean_lock);
1492 INIT_LIST_HEAD(&adapter->mac_list);
1493 INIT_LIST_HEAD(&adapter->ip_list);
1494
1495 err = netxen_setup_pci_map(adapter);
1496 if (err)
1497 goto err_out_free_netdev;
1498
1499 /* This will be reset for mezz cards */
1500 adapter->portnum = pci_func_id;
1501
1502 err = netxen_nic_get_board_info(adapter);
1503 if (err) {
1504 dev_err(&pdev->dev, "Error getting board config info.\n");
1505 goto err_out_iounmap;
1506 }
1507
1508 #ifdef CONFIG_PCIEAER
1509 netxen_mask_aer_correctable(adapter);
1510 #endif
1511
1512 /* Mezz cards have PCI function 0,2,3 enabled */
1513 switch (adapter->ahw.board_type) {
1514 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1515 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1516 if (pci_func_id >= 2)
1517 adapter->portnum = pci_func_id - 2;
1518 break;
1519 default:
1520 break;
1521 }
1522
1523 err = netxen_check_flash_fw_compatibility(adapter);
1524 if (err)
1525 goto err_out_iounmap;
1526
1527 if (adapter->portnum == 0) {
1528 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1529 if (val != 0xffffffff && val != 0) {
1530 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1531 adapter->need_fw_reset = 1;
1532 }
1533 }
1534
1535 err = netxen_start_firmware(adapter);
1536 if (err)
1537 goto err_out_decr_ref;
1538
1539 /*
1540 * See if the firmware gave us a virtual-physical port mapping.
1541 */
1542 adapter->physical_port = adapter->portnum;
1543 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1544 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1545 if (i != 0x55555555)
1546 adapter->physical_port = i;
1547 }
1548
1549 /* MTU range: 0 - 8000 (P2) or 9600 (P3) */
1550 netdev->min_mtu = 0;
1551 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1552 netdev->max_mtu = P3_MAX_MTU;
1553 else
1554 netdev->max_mtu = P2_MAX_MTU;
1555
1556 netxen_nic_clear_stats(adapter);
1557
1558 err = netxen_setup_intr(adapter);
1559
1560 if (err) {
1561 dev_err(&adapter->pdev->dev,
1562 "Failed to setup interrupts, error = %d\n", err);
1563 goto err_out_disable_msi;
1564 }
1565
1566 netxen_read_ula_info(adapter);
1567
1568 err = netxen_setup_netdev(adapter, netdev);
1569 if (err)
1570 goto err_out_disable_msi;
1571
1572 pci_set_drvdata(pdev, adapter);
1573
1574 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1575
1576 switch (adapter->ahw.port_type) {
1577 case NETXEN_NIC_GBE:
1578 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1579 adapter->netdev->name);
1580 break;
1581 case NETXEN_NIC_XGBE:
1582 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1583 adapter->netdev->name);
1584 break;
1585 }
1586
1587 netxen_create_diag_entries(adapter);
1588
1589 return 0;
1590
1591 err_out_disable_msi:
1592 netxen_teardown_intr(adapter);
1593
1594 netxen_free_dummy_dma(adapter);
1595
1596 err_out_decr_ref:
1597 nx_decr_dev_ref_cnt(adapter);
1598
1599 err_out_iounmap:
1600 netxen_cleanup_pci_map(adapter);
1601
1602 err_out_free_netdev:
1603 free_netdev(netdev);
1604
1605 err_out_free_res:
1606 if (NX_IS_REVISION_P3(pdev->revision))
1607 pci_disable_pcie_error_reporting(pdev);
1608 pci_release_regions(pdev);
1609
1610 err_out_disable_pdev:
1611 pci_disable_device(pdev);
1612 return err;
1613 }
1614
1615 static
netxen_cleanup_minidump(struct netxen_adapter * adapter)1616 void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1617 {
1618 kfree(adapter->mdump.md_template);
1619 adapter->mdump.md_template = NULL;
1620
1621 if (adapter->mdump.md_capture_buff) {
1622 vfree(adapter->mdump.md_capture_buff);
1623 adapter->mdump.md_capture_buff = NULL;
1624 }
1625 }
1626
netxen_nic_remove(struct pci_dev * pdev)1627 static void netxen_nic_remove(struct pci_dev *pdev)
1628 {
1629 struct netxen_adapter *adapter;
1630 struct net_device *netdev;
1631
1632 adapter = pci_get_drvdata(pdev);
1633 if (adapter == NULL)
1634 return;
1635
1636 netdev = adapter->netdev;
1637
1638 netxen_cancel_fw_work(adapter);
1639
1640 unregister_netdev(netdev);
1641
1642 cancel_work_sync(&adapter->tx_timeout_task);
1643
1644 netxen_free_ip_list(adapter, false);
1645 netxen_nic_detach(adapter);
1646
1647 nx_decr_dev_ref_cnt(adapter);
1648
1649 if (adapter->portnum == 0)
1650 netxen_free_dummy_dma(adapter);
1651
1652 clear_bit(__NX_RESETTING, &adapter->state);
1653
1654 netxen_teardown_intr(adapter);
1655 netxen_set_interrupt_mode(adapter, 0);
1656 netxen_remove_diag_entries(adapter);
1657
1658 netxen_cleanup_pci_map(adapter);
1659
1660 netxen_release_firmware(adapter);
1661
1662 if (NX_IS_REVISION_P3(pdev->revision)) {
1663 netxen_cleanup_minidump(adapter);
1664 pci_disable_pcie_error_reporting(pdev);
1665 }
1666
1667 pci_release_regions(pdev);
1668 pci_disable_device(pdev);
1669
1670 free_netdev(netdev);
1671 }
1672
netxen_nic_detach_func(struct netxen_adapter * adapter)1673 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1674 {
1675 struct net_device *netdev = adapter->netdev;
1676
1677 netif_device_detach(netdev);
1678
1679 netxen_cancel_fw_work(adapter);
1680
1681 if (netif_running(netdev))
1682 netxen_nic_down(adapter, netdev);
1683
1684 cancel_work_sync(&adapter->tx_timeout_task);
1685
1686 netxen_nic_detach(adapter);
1687
1688 if (adapter->portnum == 0)
1689 netxen_free_dummy_dma(adapter);
1690
1691 nx_decr_dev_ref_cnt(adapter);
1692
1693 clear_bit(__NX_RESETTING, &adapter->state);
1694 }
1695
netxen_nic_attach_late_func(struct pci_dev * pdev)1696 static int netxen_nic_attach_late_func(struct pci_dev *pdev)
1697 {
1698 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1699 struct net_device *netdev = adapter->netdev;
1700 int err;
1701
1702 pci_set_master(pdev);
1703
1704 adapter->ahw.crb_win = -1;
1705 adapter->ahw.ocm_win = -1;
1706
1707 err = netxen_start_firmware(adapter);
1708 if (err) {
1709 dev_err(&pdev->dev, "failed to start firmware\n");
1710 return err;
1711 }
1712
1713 if (netif_running(netdev)) {
1714 err = netxen_nic_attach(adapter);
1715 if (err)
1716 goto err_out;
1717
1718 err = netxen_nic_up(adapter, netdev);
1719 if (err)
1720 goto err_out_detach;
1721
1722 netxen_restore_indev_addr(netdev, NETDEV_UP);
1723 }
1724
1725 netif_device_attach(netdev);
1726 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1727 return 0;
1728
1729 err_out_detach:
1730 netxen_nic_detach(adapter);
1731 err_out:
1732 nx_decr_dev_ref_cnt(adapter);
1733 return err;
1734 }
1735
netxen_nic_attach_func(struct pci_dev * pdev)1736 static int netxen_nic_attach_func(struct pci_dev *pdev)
1737 {
1738 int err;
1739
1740 err = pci_enable_device(pdev);
1741 if (err)
1742 return err;
1743
1744 pci_set_power_state(pdev, PCI_D0);
1745 pci_restore_state(pdev);
1746
1747 return netxen_nic_attach_late_func(pdev);
1748 }
1749
netxen_io_error_detected(struct pci_dev * pdev,pci_channel_state_t state)1750 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1751 pci_channel_state_t state)
1752 {
1753 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1754
1755 if (state == pci_channel_io_perm_failure)
1756 return PCI_ERS_RESULT_DISCONNECT;
1757
1758 if (nx_dev_request_aer(adapter))
1759 return PCI_ERS_RESULT_RECOVERED;
1760
1761 netxen_nic_detach_func(adapter);
1762
1763 pci_disable_device(pdev);
1764
1765 return PCI_ERS_RESULT_NEED_RESET;
1766 }
1767
netxen_io_slot_reset(struct pci_dev * pdev)1768 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1769 {
1770 int err = 0;
1771
1772 err = netxen_nic_attach_func(pdev);
1773
1774 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1775 }
1776
netxen_nic_shutdown(struct pci_dev * pdev)1777 static void netxen_nic_shutdown(struct pci_dev *pdev)
1778 {
1779 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1780
1781 netxen_nic_detach_func(adapter);
1782
1783 if (pci_save_state(pdev))
1784 return;
1785
1786 if (netxen_nic_wol_supported(adapter)) {
1787 pci_enable_wake(pdev, PCI_D3cold, 1);
1788 pci_enable_wake(pdev, PCI_D3hot, 1);
1789 }
1790
1791 pci_disable_device(pdev);
1792 }
1793
1794 static int __maybe_unused
netxen_nic_suspend(struct device * dev_d)1795 netxen_nic_suspend(struct device *dev_d)
1796 {
1797 struct netxen_adapter *adapter = dev_get_drvdata(dev_d);
1798
1799 netxen_nic_detach_func(adapter);
1800
1801 if (netxen_nic_wol_supported(adapter))
1802 device_wakeup_enable(dev_d);
1803
1804 return 0;
1805 }
1806
1807 static int __maybe_unused
netxen_nic_resume(struct device * dev_d)1808 netxen_nic_resume(struct device *dev_d)
1809 {
1810 return netxen_nic_attach_late_func(to_pci_dev(dev_d));
1811 }
1812
netxen_nic_open(struct net_device * netdev)1813 static int netxen_nic_open(struct net_device *netdev)
1814 {
1815 struct netxen_adapter *adapter = netdev_priv(netdev);
1816 int err = 0;
1817
1818 if (adapter->driver_mismatch)
1819 return -EIO;
1820
1821 err = netxen_nic_attach(adapter);
1822 if (err)
1823 return err;
1824
1825 err = __netxen_nic_up(adapter, netdev);
1826 if (err)
1827 goto err_out;
1828
1829 netif_start_queue(netdev);
1830
1831 return 0;
1832
1833 err_out:
1834 netxen_nic_detach(adapter);
1835 return err;
1836 }
1837
1838 /*
1839 * netxen_nic_close - Disables a network interface entry point
1840 */
netxen_nic_close(struct net_device * netdev)1841 static int netxen_nic_close(struct net_device *netdev)
1842 {
1843 struct netxen_adapter *adapter = netdev_priv(netdev);
1844
1845 __netxen_nic_down(adapter, netdev);
1846 return 0;
1847 }
1848
1849 static void
netxen_tso_check(struct net_device * netdev,struct nx_host_tx_ring * tx_ring,struct cmd_desc_type0 * first_desc,struct sk_buff * skb)1850 netxen_tso_check(struct net_device *netdev,
1851 struct nx_host_tx_ring *tx_ring,
1852 struct cmd_desc_type0 *first_desc,
1853 struct sk_buff *skb)
1854 {
1855 u8 opcode = TX_ETHER_PKT;
1856 __be16 protocol = skb->protocol;
1857 u16 flags = 0, vid = 0;
1858 u32 producer;
1859 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1860 struct cmd_desc_type0 *hwdesc;
1861 struct vlan_ethhdr *vh;
1862
1863 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1864
1865 vh = (struct vlan_ethhdr *)skb->data;
1866 protocol = vh->h_vlan_encapsulated_proto;
1867 flags = FLAGS_VLAN_TAGGED;
1868
1869 } else if (skb_vlan_tag_present(skb)) {
1870 flags = FLAGS_VLAN_OOB;
1871 vid = skb_vlan_tag_get(skb);
1872 netxen_set_tx_vlan_tci(first_desc, vid);
1873 vlan_oob = 1;
1874 }
1875
1876 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1877 skb_shinfo(skb)->gso_size > 0) {
1878
1879 hdr_len = skb_tcp_all_headers(skb);
1880
1881 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1882 first_desc->total_hdr_length = hdr_len;
1883 if (vlan_oob) {
1884 first_desc->total_hdr_length += VLAN_HLEN;
1885 first_desc->tcp_hdr_offset = VLAN_HLEN;
1886 first_desc->ip_hdr_offset = VLAN_HLEN;
1887 /* Only in case of TSO on vlan device */
1888 flags |= FLAGS_VLAN_TAGGED;
1889 }
1890
1891 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1892 TX_TCP_LSO6 : TX_TCP_LSO;
1893 tso = 1;
1894
1895 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1896 u8 l4proto;
1897
1898 if (protocol == cpu_to_be16(ETH_P_IP)) {
1899 l4proto = ip_hdr(skb)->protocol;
1900
1901 if (l4proto == IPPROTO_TCP)
1902 opcode = TX_TCP_PKT;
1903 else if(l4proto == IPPROTO_UDP)
1904 opcode = TX_UDP_PKT;
1905 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1906 l4proto = ipv6_hdr(skb)->nexthdr;
1907
1908 if (l4proto == IPPROTO_TCP)
1909 opcode = TX_TCPV6_PKT;
1910 else if(l4proto == IPPROTO_UDP)
1911 opcode = TX_UDPV6_PKT;
1912 }
1913 }
1914
1915 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1916 first_desc->ip_hdr_offset += skb_network_offset(skb);
1917 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1918
1919 if (!tso)
1920 return;
1921
1922 /* For LSO, we need to copy the MAC/IP/TCP headers into
1923 * the descriptor ring
1924 */
1925 producer = tx_ring->producer;
1926 copied = 0;
1927 offset = 2;
1928
1929 if (vlan_oob) {
1930 /* Create a TSO vlan header template for firmware */
1931
1932 hwdesc = &tx_ring->desc_head[producer];
1933 tx_ring->cmd_buf_arr[producer].skb = NULL;
1934
1935 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1936 hdr_len + VLAN_HLEN);
1937
1938 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1939 skb_copy_from_linear_data(skb, vh, 12);
1940 vh->h_vlan_proto = htons(ETH_P_8021Q);
1941 vh->h_vlan_TCI = htons(vid);
1942 skb_copy_from_linear_data_offset(skb, 12,
1943 (char *)vh + 16, copy_len - 16);
1944
1945 copied = copy_len - VLAN_HLEN;
1946 offset = 0;
1947
1948 producer = get_next_index(producer, tx_ring->num_desc);
1949 }
1950
1951 while (copied < hdr_len) {
1952
1953 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1954 (hdr_len - copied));
1955
1956 hwdesc = &tx_ring->desc_head[producer];
1957 tx_ring->cmd_buf_arr[producer].skb = NULL;
1958
1959 skb_copy_from_linear_data_offset(skb, copied,
1960 (char *)hwdesc + offset, copy_len);
1961
1962 copied += copy_len;
1963 offset = 0;
1964
1965 producer = get_next_index(producer, tx_ring->num_desc);
1966 }
1967
1968 tx_ring->producer = producer;
1969 barrier();
1970 }
1971
1972 static int
netxen_map_tx_skb(struct pci_dev * pdev,struct sk_buff * skb,struct netxen_cmd_buffer * pbuf)1973 netxen_map_tx_skb(struct pci_dev *pdev,
1974 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1975 {
1976 struct netxen_skb_frag *nf;
1977 skb_frag_t *frag;
1978 int i, nr_frags;
1979 dma_addr_t map;
1980
1981 nr_frags = skb_shinfo(skb)->nr_frags;
1982 nf = &pbuf->frag_array[0];
1983
1984 map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
1985 DMA_TO_DEVICE);
1986 if (dma_mapping_error(&pdev->dev, map))
1987 goto out_err;
1988
1989 nf->dma = map;
1990 nf->length = skb_headlen(skb);
1991
1992 for (i = 0; i < nr_frags; i++) {
1993 frag = &skb_shinfo(skb)->frags[i];
1994 nf = &pbuf->frag_array[i+1];
1995
1996 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
1997 DMA_TO_DEVICE);
1998 if (dma_mapping_error(&pdev->dev, map))
1999 goto unwind;
2000
2001 nf->dma = map;
2002 nf->length = skb_frag_size(frag);
2003 }
2004
2005 return 0;
2006
2007 unwind:
2008 while (--i >= 0) {
2009 nf = &pbuf->frag_array[i+1];
2010 dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
2011 nf->dma = 0ULL;
2012 }
2013
2014 nf = &pbuf->frag_array[0];
2015 dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
2016 nf->dma = 0ULL;
2017
2018 out_err:
2019 return -ENOMEM;
2020 }
2021
2022 static inline void
netxen_clear_cmddesc(u64 * desc)2023 netxen_clear_cmddesc(u64 *desc)
2024 {
2025 desc[0] = 0ULL;
2026 desc[2] = 0ULL;
2027 }
2028
2029 static netdev_tx_t
netxen_nic_xmit_frame(struct sk_buff * skb,struct net_device * netdev)2030 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2031 {
2032 struct netxen_adapter *adapter = netdev_priv(netdev);
2033 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
2034 struct netxen_cmd_buffer *pbuf;
2035 struct netxen_skb_frag *buffrag;
2036 struct cmd_desc_type0 *hwdesc, *first_desc;
2037 struct pci_dev *pdev;
2038 int i, k;
2039 int delta = 0;
2040 skb_frag_t *frag;
2041
2042 u32 producer;
2043 int frag_count;
2044 u32 num_txd = tx_ring->num_desc;
2045
2046 frag_count = skb_shinfo(skb)->nr_frags + 1;
2047
2048 /* 14 frags supported for normal packet and
2049 * 32 frags supported for TSO packet
2050 */
2051 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2052
2053 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2054 frag = &skb_shinfo(skb)->frags[i];
2055 delta += skb_frag_size(frag);
2056 }
2057
2058 if (!__pskb_pull_tail(skb, delta))
2059 goto drop_packet;
2060
2061 frag_count = 1 + skb_shinfo(skb)->nr_frags;
2062 }
2063
2064 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2065 netif_stop_queue(netdev);
2066 smp_mb();
2067 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2068 netif_start_queue(netdev);
2069 else
2070 return NETDEV_TX_BUSY;
2071 }
2072
2073 producer = tx_ring->producer;
2074 pbuf = &tx_ring->cmd_buf_arr[producer];
2075
2076 pdev = adapter->pdev;
2077
2078 if (netxen_map_tx_skb(pdev, skb, pbuf))
2079 goto drop_packet;
2080
2081 pbuf->skb = skb;
2082 pbuf->frag_count = frag_count;
2083
2084 first_desc = hwdesc = &tx_ring->desc_head[producer];
2085 netxen_clear_cmddesc((u64 *)hwdesc);
2086
2087 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2088 netxen_set_tx_port(first_desc, adapter->portnum);
2089
2090 for (i = 0; i < frag_count; i++) {
2091
2092 k = i % 4;
2093
2094 if ((k == 0) && (i > 0)) {
2095 /* move to next desc.*/
2096 producer = get_next_index(producer, num_txd);
2097 hwdesc = &tx_ring->desc_head[producer];
2098 netxen_clear_cmddesc((u64 *)hwdesc);
2099 tx_ring->cmd_buf_arr[producer].skb = NULL;
2100 }
2101
2102 buffrag = &pbuf->frag_array[i];
2103
2104 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2105 switch (k) {
2106 case 0:
2107 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2108 break;
2109 case 1:
2110 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2111 break;
2112 case 2:
2113 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2114 break;
2115 case 3:
2116 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2117 break;
2118 }
2119 }
2120
2121 tx_ring->producer = get_next_index(producer, num_txd);
2122
2123 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2124
2125 adapter->stats.txbytes += skb->len;
2126 adapter->stats.xmitcalled++;
2127
2128 netxen_nic_update_cmd_producer(adapter, tx_ring);
2129
2130 return NETDEV_TX_OK;
2131
2132 drop_packet:
2133 adapter->stats.txdropped++;
2134 dev_kfree_skb_any(skb);
2135 return NETDEV_TX_OK;
2136 }
2137
netxen_nic_check_temp(struct netxen_adapter * adapter)2138 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2139 {
2140 struct net_device *netdev = adapter->netdev;
2141 uint32_t temp, temp_state, temp_val;
2142 int rv = 0;
2143
2144 temp = NXRD32(adapter, CRB_TEMP_STATE);
2145
2146 temp_state = nx_get_temp_state(temp);
2147 temp_val = nx_get_temp_val(temp);
2148
2149 if (temp_state == NX_TEMP_PANIC) {
2150 printk(KERN_ALERT
2151 "%s: Device temperature %d degrees C exceeds"
2152 " maximum allowed. Hardware has been shut down.\n",
2153 netdev->name, temp_val);
2154 rv = 1;
2155 } else if (temp_state == NX_TEMP_WARN) {
2156 if (adapter->temp == NX_TEMP_NORMAL) {
2157 printk(KERN_ALERT
2158 "%s: Device temperature %d degrees C "
2159 "exceeds operating range."
2160 " Immediate action needed.\n",
2161 netdev->name, temp_val);
2162 }
2163 } else {
2164 if (adapter->temp == NX_TEMP_WARN) {
2165 printk(KERN_INFO
2166 "%s: Device temperature is now %d degrees C"
2167 " in normal range.\n", netdev->name,
2168 temp_val);
2169 }
2170 }
2171 adapter->temp = temp_state;
2172 return rv;
2173 }
2174
netxen_advert_link_change(struct netxen_adapter * adapter,int linkup)2175 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2176 {
2177 struct net_device *netdev = adapter->netdev;
2178
2179 if (adapter->ahw.linkup && !linkup) {
2180 printk(KERN_INFO "%s: %s NIC Link is down\n",
2181 netxen_nic_driver_name, netdev->name);
2182 adapter->ahw.linkup = 0;
2183 if (netif_running(netdev)) {
2184 netif_carrier_off(netdev);
2185 netif_stop_queue(netdev);
2186 }
2187 adapter->link_changed = !adapter->has_link_events;
2188 } else if (!adapter->ahw.linkup && linkup) {
2189 printk(KERN_INFO "%s: %s NIC Link is up\n",
2190 netxen_nic_driver_name, netdev->name);
2191 adapter->ahw.linkup = 1;
2192 if (netif_running(netdev)) {
2193 netif_carrier_on(netdev);
2194 netif_wake_queue(netdev);
2195 }
2196 adapter->link_changed = !adapter->has_link_events;
2197 }
2198 }
2199
netxen_nic_handle_phy_intr(struct netxen_adapter * adapter)2200 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2201 {
2202 u32 val, port, linkup;
2203
2204 port = adapter->physical_port;
2205
2206 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2207 val = NXRD32(adapter, CRB_XG_STATE_P3);
2208 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2209 linkup = (val == XG_LINK_UP_P3);
2210 } else {
2211 val = NXRD32(adapter, CRB_XG_STATE);
2212 val = (val >> port*8) & 0xff;
2213 linkup = (val == XG_LINK_UP);
2214 }
2215
2216 netxen_advert_link_change(adapter, linkup);
2217 }
2218
netxen_tx_timeout(struct net_device * netdev,unsigned int txqueue)2219 static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2220 {
2221 struct netxen_adapter *adapter = netdev_priv(netdev);
2222
2223 if (test_bit(__NX_RESETTING, &adapter->state))
2224 return;
2225
2226 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2227 schedule_work(&adapter->tx_timeout_task);
2228 }
2229
netxen_tx_timeout_task(struct work_struct * work)2230 static void netxen_tx_timeout_task(struct work_struct *work)
2231 {
2232 struct netxen_adapter *adapter =
2233 container_of(work, struct netxen_adapter, tx_timeout_task);
2234
2235 if (!netif_running(adapter->netdev))
2236 return;
2237
2238 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2239 return;
2240
2241 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2242 goto request_reset;
2243
2244 rtnl_lock();
2245 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2246 /* try to scrub interrupt */
2247 netxen_napi_disable(adapter);
2248
2249 netxen_napi_enable(adapter);
2250
2251 netif_wake_queue(adapter->netdev);
2252
2253 clear_bit(__NX_RESETTING, &adapter->state);
2254 } else {
2255 clear_bit(__NX_RESETTING, &adapter->state);
2256 if (netxen_nic_reset_context(adapter)) {
2257 rtnl_unlock();
2258 goto request_reset;
2259 }
2260 }
2261 netif_trans_update(adapter->netdev);
2262 rtnl_unlock();
2263 return;
2264
2265 request_reset:
2266 adapter->need_fw_reset = 1;
2267 clear_bit(__NX_RESETTING, &adapter->state);
2268 }
2269
netxen_nic_get_stats(struct net_device * netdev,struct rtnl_link_stats64 * stats)2270 static void netxen_nic_get_stats(struct net_device *netdev,
2271 struct rtnl_link_stats64 *stats)
2272 {
2273 struct netxen_adapter *adapter = netdev_priv(netdev);
2274
2275 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2276 stats->tx_packets = adapter->stats.xmitfinished;
2277 stats->rx_bytes = adapter->stats.rxbytes;
2278 stats->tx_bytes = adapter->stats.txbytes;
2279 stats->rx_dropped = adapter->stats.rxdropped;
2280 stats->tx_dropped = adapter->stats.txdropped;
2281 }
2282
netxen_intr(int irq,void * data)2283 static irqreturn_t netxen_intr(int irq, void *data)
2284 {
2285 struct nx_host_sds_ring *sds_ring = data;
2286 struct netxen_adapter *adapter = sds_ring->adapter;
2287 u32 status = 0;
2288
2289 status = readl(adapter->isr_int_vec);
2290
2291 if (!(status & adapter->int_vec_bit))
2292 return IRQ_NONE;
2293
2294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2295 /* check interrupt state machine, to be sure */
2296 status = readl(adapter->crb_int_state_reg);
2297 if (!ISR_LEGACY_INT_TRIGGERED(status))
2298 return IRQ_NONE;
2299
2300 } else {
2301 unsigned long our_int = 0;
2302
2303 our_int = readl(adapter->crb_int_state_reg);
2304
2305 /* not our interrupt */
2306 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2307 return IRQ_NONE;
2308
2309 /* claim interrupt */
2310 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2311
2312 /* clear interrupt */
2313 netxen_nic_disable_int(sds_ring);
2314 }
2315
2316 writel(0xffffffff, adapter->tgt_status_reg);
2317 /* read twice to ensure write is flushed */
2318 readl(adapter->isr_int_vec);
2319 readl(adapter->isr_int_vec);
2320
2321 napi_schedule(&sds_ring->napi);
2322
2323 return IRQ_HANDLED;
2324 }
2325
netxen_msi_intr(int irq,void * data)2326 static irqreturn_t netxen_msi_intr(int irq, void *data)
2327 {
2328 struct nx_host_sds_ring *sds_ring = data;
2329 struct netxen_adapter *adapter = sds_ring->adapter;
2330
2331 /* clear interrupt */
2332 writel(0xffffffff, adapter->tgt_status_reg);
2333
2334 napi_schedule(&sds_ring->napi);
2335 return IRQ_HANDLED;
2336 }
2337
netxen_msix_intr(int irq,void * data)2338 static irqreturn_t netxen_msix_intr(int irq, void *data)
2339 {
2340 struct nx_host_sds_ring *sds_ring = data;
2341
2342 napi_schedule(&sds_ring->napi);
2343 return IRQ_HANDLED;
2344 }
2345
netxen_nic_poll(struct napi_struct * napi,int budget)2346 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2347 {
2348 struct nx_host_sds_ring *sds_ring =
2349 container_of(napi, struct nx_host_sds_ring, napi);
2350
2351 struct netxen_adapter *adapter = sds_ring->adapter;
2352
2353 int tx_complete;
2354 int work_done;
2355
2356 tx_complete = netxen_process_cmd_ring(adapter);
2357
2358 work_done = netxen_process_rcv_ring(sds_ring, budget);
2359
2360 if (!tx_complete)
2361 work_done = budget;
2362
2363 if (work_done < budget) {
2364 napi_complete_done(&sds_ring->napi, work_done);
2365 if (test_bit(__NX_DEV_UP, &adapter->state))
2366 netxen_nic_enable_int(sds_ring);
2367 }
2368
2369 return work_done;
2370 }
2371
2372 static int
nx_incr_dev_ref_cnt(struct netxen_adapter * adapter)2373 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2374 {
2375 int count;
2376 if (netxen_api_lock(adapter))
2377 return -EIO;
2378
2379 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2380
2381 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2382
2383 netxen_api_unlock(adapter);
2384 return count;
2385 }
2386
2387 static int
nx_decr_dev_ref_cnt(struct netxen_adapter * adapter)2388 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2389 {
2390 int count, state;
2391 if (netxen_api_lock(adapter))
2392 return -EIO;
2393
2394 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2395 WARN_ON(count == 0);
2396
2397 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2398 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2399
2400 if (count == 0 && state != NX_DEV_FAILED)
2401 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2402
2403 netxen_api_unlock(adapter);
2404 return count;
2405 }
2406
2407 static int
nx_dev_request_aer(struct netxen_adapter * adapter)2408 nx_dev_request_aer(struct netxen_adapter *adapter)
2409 {
2410 u32 state;
2411 int ret = -EINVAL;
2412
2413 if (netxen_api_lock(adapter))
2414 return ret;
2415
2416 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2417
2418 if (state == NX_DEV_NEED_AER)
2419 ret = 0;
2420 else if (state == NX_DEV_READY) {
2421 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2422 ret = 0;
2423 }
2424
2425 netxen_api_unlock(adapter);
2426 return ret;
2427 }
2428
2429 int
nx_dev_request_reset(struct netxen_adapter * adapter)2430 nx_dev_request_reset(struct netxen_adapter *adapter)
2431 {
2432 u32 state;
2433 int ret = -EINVAL;
2434
2435 if (netxen_api_lock(adapter))
2436 return ret;
2437
2438 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2439
2440 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2441 ret = 0;
2442 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2443 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2444 adapter->flags |= NETXEN_FW_RESET_OWNER;
2445 ret = 0;
2446 }
2447
2448 netxen_api_unlock(adapter);
2449
2450 return ret;
2451 }
2452
2453 static int
netxen_can_start_firmware(struct netxen_adapter * adapter)2454 netxen_can_start_firmware(struct netxen_adapter *adapter)
2455 {
2456 int count;
2457 int can_start = 0;
2458
2459 if (netxen_api_lock(adapter)) {
2460 nx_incr_dev_ref_cnt(adapter);
2461 return -1;
2462 }
2463
2464 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2465
2466 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2467 count = 0;
2468
2469 if (count == 0) {
2470 can_start = 1;
2471 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2472 }
2473
2474 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2475
2476 netxen_api_unlock(adapter);
2477
2478 return can_start;
2479 }
2480
2481 static void
netxen_schedule_work(struct netxen_adapter * adapter,work_func_t func,int delay)2482 netxen_schedule_work(struct netxen_adapter *adapter,
2483 work_func_t func, int delay)
2484 {
2485 INIT_DELAYED_WORK(&adapter->fw_work, func);
2486 schedule_delayed_work(&adapter->fw_work, delay);
2487 }
2488
2489 static void
netxen_cancel_fw_work(struct netxen_adapter * adapter)2490 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2491 {
2492 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2493 msleep(10);
2494
2495 cancel_delayed_work_sync(&adapter->fw_work);
2496 }
2497
2498 static void
netxen_attach_work(struct work_struct * work)2499 netxen_attach_work(struct work_struct *work)
2500 {
2501 struct netxen_adapter *adapter = container_of(work,
2502 struct netxen_adapter, fw_work.work);
2503 struct net_device *netdev = adapter->netdev;
2504 int err = 0;
2505
2506 if (netif_running(netdev)) {
2507 err = netxen_nic_attach(adapter);
2508 if (err)
2509 goto done;
2510
2511 err = netxen_nic_up(adapter, netdev);
2512 if (err) {
2513 netxen_nic_detach(adapter);
2514 goto done;
2515 }
2516
2517 netxen_restore_indev_addr(netdev, NETDEV_UP);
2518 }
2519
2520 netif_device_attach(netdev);
2521
2522 done:
2523 adapter->fw_fail_cnt = 0;
2524 clear_bit(__NX_RESETTING, &adapter->state);
2525 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2526 }
2527
2528 static void
netxen_fwinit_work(struct work_struct * work)2529 netxen_fwinit_work(struct work_struct *work)
2530 {
2531 struct netxen_adapter *adapter = container_of(work,
2532 struct netxen_adapter, fw_work.work);
2533 int dev_state;
2534 int count;
2535 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2536 if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2537 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2538 WARN_ON(count == 0);
2539 if (count == 1) {
2540 if (adapter->mdump.md_enabled) {
2541 rtnl_lock();
2542 netxen_dump_fw(adapter);
2543 rtnl_unlock();
2544 }
2545 adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2546 if (netxen_api_lock(adapter)) {
2547 clear_bit(__NX_RESETTING, &adapter->state);
2548 NXWR32(adapter, NX_CRB_DEV_STATE,
2549 NX_DEV_FAILED);
2550 return;
2551 }
2552 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2553 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2554 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2555 dev_state = NX_DEV_COLD;
2556 netxen_api_unlock(adapter);
2557 }
2558 }
2559
2560 switch (dev_state) {
2561 case NX_DEV_COLD:
2562 case NX_DEV_READY:
2563 if (!netxen_start_firmware(adapter)) {
2564 netxen_schedule_work(adapter, netxen_attach_work, 0);
2565 return;
2566 }
2567 break;
2568
2569 case NX_DEV_NEED_RESET:
2570 case NX_DEV_INITALIZING:
2571 netxen_schedule_work(adapter,
2572 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2573 return;
2574
2575 case NX_DEV_FAILED:
2576 default:
2577 nx_incr_dev_ref_cnt(adapter);
2578 break;
2579 }
2580
2581 if (netxen_api_lock(adapter)) {
2582 clear_bit(__NX_RESETTING, &adapter->state);
2583 return;
2584 }
2585 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2586 netxen_api_unlock(adapter);
2587 dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2588 adapter->netdev->name);
2589
2590 clear_bit(__NX_RESETTING, &adapter->state);
2591 }
2592
2593 static void
netxen_detach_work(struct work_struct * work)2594 netxen_detach_work(struct work_struct *work)
2595 {
2596 struct netxen_adapter *adapter = container_of(work,
2597 struct netxen_adapter, fw_work.work);
2598 struct net_device *netdev = adapter->netdev;
2599 int ref_cnt = 0, delay;
2600 u32 status;
2601
2602 netif_device_detach(netdev);
2603
2604 netxen_nic_down(adapter, netdev);
2605
2606 rtnl_lock();
2607 netxen_nic_detach(adapter);
2608 rtnl_unlock();
2609
2610 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2611
2612 if (status & NX_RCODE_FATAL_ERROR)
2613 goto err_ret;
2614
2615 if (adapter->temp == NX_TEMP_PANIC)
2616 goto err_ret;
2617
2618 if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2619 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2620
2621 if (ref_cnt == -EIO)
2622 goto err_ret;
2623
2624 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2625
2626 adapter->fw_wait_cnt = 0;
2627 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2628
2629 return;
2630
2631 err_ret:
2632 clear_bit(__NX_RESETTING, &adapter->state);
2633 }
2634
2635 static int
netxen_check_health(struct netxen_adapter * adapter)2636 netxen_check_health(struct netxen_adapter *adapter)
2637 {
2638 u32 state, heartbit;
2639 u32 peg_status;
2640 struct net_device *netdev = adapter->netdev;
2641
2642 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2643 if (state == NX_DEV_NEED_AER)
2644 return 0;
2645
2646 if (netxen_nic_check_temp(adapter))
2647 goto detach;
2648
2649 if (adapter->need_fw_reset) {
2650 if (nx_dev_request_reset(adapter))
2651 return 0;
2652 goto detach;
2653 }
2654
2655 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2656 * 1. Tx timeout 2. Fw hang
2657 * Send request to destroy context in case of tx timeout only
2658 * and doesn't required in case of Fw hang
2659 */
2660 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2661 adapter->need_fw_reset = 1;
2662 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2663 goto detach;
2664 }
2665
2666 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2667 return 0;
2668
2669 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2670 if (heartbit != adapter->heartbit) {
2671 adapter->heartbit = heartbit;
2672 adapter->fw_fail_cnt = 0;
2673 if (adapter->need_fw_reset)
2674 goto detach;
2675 return 0;
2676 }
2677
2678 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2679 return 0;
2680
2681 if (nx_dev_request_reset(adapter))
2682 return 0;
2683
2684 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2685
2686 dev_err(&netdev->dev, "firmware hang detected\n");
2687 peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2688 dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2689 "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2690 "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2691 "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2692 "PEG_NET_4_PC: 0x%x\n",
2693 peg_status,
2694 NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2695 NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2696 NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2697 NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2698 NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2699 NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2700 if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2701 dev_err(&adapter->pdev->dev,
2702 "Firmware aborted with error code 0x00006700. "
2703 "Device is being reset.\n");
2704 detach:
2705 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2706 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2707 netxen_schedule_work(adapter, netxen_detach_work, 0);
2708 return 1;
2709 }
2710
2711 static void
netxen_fw_poll_work(struct work_struct * work)2712 netxen_fw_poll_work(struct work_struct *work)
2713 {
2714 struct netxen_adapter *adapter = container_of(work,
2715 struct netxen_adapter, fw_work.work);
2716
2717 if (test_bit(__NX_RESETTING, &adapter->state))
2718 goto reschedule;
2719
2720 if (test_bit(__NX_DEV_UP, &adapter->state) &&
2721 !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) {
2722 if (!adapter->has_link_events) {
2723
2724 netxen_nic_handle_phy_intr(adapter);
2725
2726 if (adapter->link_changed)
2727 netxen_nic_set_link_parameters(adapter);
2728 }
2729 }
2730
2731 if (netxen_check_health(adapter))
2732 return;
2733
2734 reschedule:
2735 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2736 }
2737
2738 static ssize_t
netxen_store_bridged_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)2739 netxen_store_bridged_mode(struct device *dev,
2740 struct device_attribute *attr, const char *buf, size_t len)
2741 {
2742 struct net_device *net = to_net_dev(dev);
2743 struct netxen_adapter *adapter = netdev_priv(net);
2744 unsigned long new;
2745 int ret = -EINVAL;
2746
2747 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2748 goto err_out;
2749
2750 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2751 goto err_out;
2752
2753 if (kstrtoul(buf, 2, &new))
2754 goto err_out;
2755
2756 if (!netxen_config_bridged_mode(adapter, !!new))
2757 ret = len;
2758
2759 err_out:
2760 return ret;
2761 }
2762
2763 static ssize_t
netxen_show_bridged_mode(struct device * dev,struct device_attribute * attr,char * buf)2764 netxen_show_bridged_mode(struct device *dev,
2765 struct device_attribute *attr, char *buf)
2766 {
2767 struct net_device *net = to_net_dev(dev);
2768 struct netxen_adapter *adapter;
2769 int bridged_mode = 0;
2770
2771 adapter = netdev_priv(net);
2772
2773 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2774 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2775
2776 return sprintf(buf, "%d\n", bridged_mode);
2777 }
2778
2779 static const struct device_attribute dev_attr_bridged_mode = {
2780 .attr = { .name = "bridged_mode", .mode = 0644 },
2781 .show = netxen_show_bridged_mode,
2782 .store = netxen_store_bridged_mode,
2783 };
2784
2785 static ssize_t
netxen_store_diag_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)2786 netxen_store_diag_mode(struct device *dev,
2787 struct device_attribute *attr, const char *buf, size_t len)
2788 {
2789 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2790 unsigned long new;
2791
2792 if (kstrtoul(buf, 2, &new))
2793 return -EINVAL;
2794
2795 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2796 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2797
2798 return len;
2799 }
2800
2801 static ssize_t
netxen_show_diag_mode(struct device * dev,struct device_attribute * attr,char * buf)2802 netxen_show_diag_mode(struct device *dev,
2803 struct device_attribute *attr, char *buf)
2804 {
2805 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2806
2807 return sprintf(buf, "%d\n",
2808 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2809 }
2810
2811 static const struct device_attribute dev_attr_diag_mode = {
2812 .attr = { .name = "diag_mode", .mode = 0644 },
2813 .show = netxen_show_diag_mode,
2814 .store = netxen_store_diag_mode,
2815 };
2816
2817 static int
netxen_sysfs_validate_crb(struct netxen_adapter * adapter,loff_t offset,size_t size)2818 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2819 loff_t offset, size_t size)
2820 {
2821 size_t crb_size = 4;
2822
2823 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2824 return -EIO;
2825
2826 if (offset < NETXEN_PCI_CRBSPACE) {
2827 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2828 return -EINVAL;
2829
2830 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2831 NETXEN_PCI_CAMQM_2M_END))
2832 crb_size = 8;
2833 else
2834 return -EINVAL;
2835 }
2836
2837 if ((size != crb_size) || (offset & (crb_size-1)))
2838 return -EINVAL;
2839
2840 return 0;
2841 }
2842
2843 static ssize_t
netxen_sysfs_read_crb(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t size)2844 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2845 struct bin_attribute *attr,
2846 char *buf, loff_t offset, size_t size)
2847 {
2848 struct device *dev = kobj_to_dev(kobj);
2849 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2850 u32 data;
2851 u64 qmdata;
2852 int ret;
2853
2854 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2855 if (ret != 0)
2856 return ret;
2857
2858 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2859 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2860 NETXEN_PCI_CAMQM_2M_END)) {
2861 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2862 memcpy(buf, &qmdata, size);
2863 } else {
2864 data = NXRD32(adapter, offset);
2865 memcpy(buf, &data, size);
2866 }
2867
2868 return size;
2869 }
2870
2871 static ssize_t
netxen_sysfs_write_crb(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t size)2872 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2873 struct bin_attribute *attr,
2874 char *buf, loff_t offset, size_t size)
2875 {
2876 struct device *dev = kobj_to_dev(kobj);
2877 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2878 u32 data;
2879 u64 qmdata;
2880 int ret;
2881
2882 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2883 if (ret != 0)
2884 return ret;
2885
2886 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2887 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2888 NETXEN_PCI_CAMQM_2M_END)) {
2889 memcpy(&qmdata, buf, size);
2890 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2891 } else {
2892 memcpy(&data, buf, size);
2893 NXWR32(adapter, offset, data);
2894 }
2895
2896 return size;
2897 }
2898
2899 static int
netxen_sysfs_validate_mem(struct netxen_adapter * adapter,loff_t offset,size_t size)2900 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2901 loff_t offset, size_t size)
2902 {
2903 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2904 return -EIO;
2905
2906 if ((size != 8) || (offset & 0x7))
2907 return -EIO;
2908
2909 return 0;
2910 }
2911
2912 static ssize_t
netxen_sysfs_read_mem(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t size)2913 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2914 struct bin_attribute *attr,
2915 char *buf, loff_t offset, size_t size)
2916 {
2917 struct device *dev = kobj_to_dev(kobj);
2918 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2919 u64 data;
2920 int ret;
2921
2922 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2923 if (ret != 0)
2924 return ret;
2925
2926 if (adapter->pci_mem_read(adapter, offset, &data))
2927 return -EIO;
2928
2929 memcpy(buf, &data, size);
2930
2931 return size;
2932 }
2933
netxen_sysfs_write_mem(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t size)2934 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2935 struct bin_attribute *attr, char *buf,
2936 loff_t offset, size_t size)
2937 {
2938 struct device *dev = kobj_to_dev(kobj);
2939 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2940 u64 data;
2941 int ret;
2942
2943 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2944 if (ret != 0)
2945 return ret;
2946
2947 memcpy(&data, buf, size);
2948
2949 if (adapter->pci_mem_write(adapter, offset, data))
2950 return -EIO;
2951
2952 return size;
2953 }
2954
2955
2956 static const struct bin_attribute bin_attr_crb = {
2957 .attr = { .name = "crb", .mode = 0644 },
2958 .size = 0,
2959 .read = netxen_sysfs_read_crb,
2960 .write = netxen_sysfs_write_crb,
2961 };
2962
2963 static const struct bin_attribute bin_attr_mem = {
2964 .attr = { .name = "mem", .mode = 0644 },
2965 .size = 0,
2966 .read = netxen_sysfs_read_mem,
2967 .write = netxen_sysfs_write_mem,
2968 };
2969
2970 static ssize_t
netxen_sysfs_read_dimm(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t size)2971 netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
2972 struct bin_attribute *attr,
2973 char *buf, loff_t offset, size_t size)
2974 {
2975 struct device *dev = kobj_to_dev(kobj);
2976 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2977 struct net_device *netdev = adapter->netdev;
2978 struct netxen_dimm_cfg dimm;
2979 u8 dw, rows, cols, banks, ranks;
2980 u32 val;
2981
2982 if (size < attr->size) {
2983 netdev_err(netdev, "Invalid size\n");
2984 return -EINVAL;
2985 }
2986
2987 memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
2988 val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
2989
2990 /* Checks if DIMM info is valid. */
2991 if (val & NETXEN_DIMM_VALID_FLAG) {
2992 netdev_err(netdev, "Invalid DIMM flag\n");
2993 dimm.presence = 0xff;
2994 goto out;
2995 }
2996
2997 rows = NETXEN_DIMM_NUMROWS(val);
2998 cols = NETXEN_DIMM_NUMCOLS(val);
2999 ranks = NETXEN_DIMM_NUMRANKS(val);
3000 banks = NETXEN_DIMM_NUMBANKS(val);
3001 dw = NETXEN_DIMM_DATAWIDTH(val);
3002
3003 dimm.presence = (val & NETXEN_DIMM_PRESENT);
3004
3005 /* Checks if DIMM info is present. */
3006 if (!dimm.presence) {
3007 netdev_err(netdev, "DIMM not present\n");
3008 goto out;
3009 }
3010
3011 dimm.dimm_type = NETXEN_DIMM_TYPE(val);
3012
3013 switch (dimm.dimm_type) {
3014 case NETXEN_DIMM_TYPE_RDIMM:
3015 case NETXEN_DIMM_TYPE_UDIMM:
3016 case NETXEN_DIMM_TYPE_SO_DIMM:
3017 case NETXEN_DIMM_TYPE_Micro_DIMM:
3018 case NETXEN_DIMM_TYPE_Mini_RDIMM:
3019 case NETXEN_DIMM_TYPE_Mini_UDIMM:
3020 break;
3021 default:
3022 netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
3023 goto out;
3024 }
3025
3026 if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
3027 dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
3028 else
3029 dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
3030
3031 if (val & NETXEN_DIMM_SIZE) {
3032 dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
3033 goto out;
3034 }
3035
3036 if (!rows) {
3037 netdev_err(netdev, "Invalid no of rows %x\n", rows);
3038 goto out;
3039 }
3040
3041 if (!cols) {
3042 netdev_err(netdev, "Invalid no of columns %x\n", cols);
3043 goto out;
3044 }
3045
3046 if (!banks) {
3047 netdev_err(netdev, "Invalid no of banks %x\n", banks);
3048 goto out;
3049 }
3050
3051 ranks += 1;
3052
3053 switch (dw) {
3054 case 0x0:
3055 dw = 32;
3056 break;
3057 case 0x1:
3058 dw = 33;
3059 break;
3060 case 0x2:
3061 dw = 36;
3062 break;
3063 case 0x3:
3064 dw = 64;
3065 break;
3066 case 0x4:
3067 dw = 72;
3068 break;
3069 case 0x5:
3070 dw = 80;
3071 break;
3072 case 0x6:
3073 dw = 128;
3074 break;
3075 case 0x7:
3076 dw = 144;
3077 break;
3078 default:
3079 netdev_err(netdev, "Invalid data-width %x\n", dw);
3080 goto out;
3081 }
3082
3083 dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3084 /* Size returned in MB. */
3085 dimm.size = (dimm.size) / 0x100000;
3086 out:
3087 memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3088 return sizeof(struct netxen_dimm_cfg);
3089
3090 }
3091
3092 static const struct bin_attribute bin_attr_dimm = {
3093 .attr = { .name = "dimm", .mode = 0644 },
3094 .size = sizeof(struct netxen_dimm_cfg),
3095 .read = netxen_sysfs_read_dimm,
3096 };
3097
3098
3099 static void
netxen_create_sysfs_entries(struct netxen_adapter * adapter)3100 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3101 {
3102 struct device *dev = &adapter->pdev->dev;
3103
3104 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3105 /* bridged_mode control */
3106 if (device_create_file(dev, &dev_attr_bridged_mode)) {
3107 dev_warn(dev,
3108 "failed to create bridged_mode sysfs entry\n");
3109 }
3110 }
3111 }
3112
3113 static void
netxen_remove_sysfs_entries(struct netxen_adapter * adapter)3114 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3115 {
3116 struct device *dev = &adapter->pdev->dev;
3117
3118 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3119 device_remove_file(dev, &dev_attr_bridged_mode);
3120 }
3121
3122 static void
netxen_create_diag_entries(struct netxen_adapter * adapter)3123 netxen_create_diag_entries(struct netxen_adapter *adapter)
3124 {
3125 struct pci_dev *pdev = adapter->pdev;
3126 struct device *dev;
3127
3128 dev = &pdev->dev;
3129 if (device_create_file(dev, &dev_attr_diag_mode))
3130 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3131 if (device_create_bin_file(dev, &bin_attr_crb))
3132 dev_info(dev, "failed to create crb sysfs entry\n");
3133 if (device_create_bin_file(dev, &bin_attr_mem))
3134 dev_info(dev, "failed to create mem sysfs entry\n");
3135 if (device_create_bin_file(dev, &bin_attr_dimm))
3136 dev_info(dev, "failed to create dimm sysfs entry\n");
3137 }
3138
3139
3140 static void
netxen_remove_diag_entries(struct netxen_adapter * adapter)3141 netxen_remove_diag_entries(struct netxen_adapter *adapter)
3142 {
3143 struct pci_dev *pdev = adapter->pdev;
3144 struct device *dev = &pdev->dev;
3145
3146 device_remove_file(dev, &dev_attr_diag_mode);
3147 device_remove_bin_file(dev, &bin_attr_crb);
3148 device_remove_bin_file(dev, &bin_attr_mem);
3149 device_remove_bin_file(dev, &bin_attr_dimm);
3150 }
3151
3152 #ifdef CONFIG_INET
3153
3154 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3155
3156 static int
netxen_destip_supported(struct netxen_adapter * adapter)3157 netxen_destip_supported(struct netxen_adapter *adapter)
3158 {
3159 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3160 return 0;
3161
3162 if (adapter->ahw.cut_through)
3163 return 0;
3164
3165 return 1;
3166 }
3167
3168 static void
netxen_free_ip_list(struct netxen_adapter * adapter,bool master)3169 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3170 {
3171 struct nx_ip_list *cur, *tmp_cur;
3172
3173 list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
3174 if (master) {
3175 if (cur->master) {
3176 netxen_config_ipaddr(adapter, cur->ip_addr,
3177 NX_IP_DOWN);
3178 list_del(&cur->list);
3179 kfree(cur);
3180 }
3181 } else {
3182 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3183 list_del(&cur->list);
3184 kfree(cur);
3185 }
3186 }
3187 }
3188
3189 static bool
netxen_list_config_ip(struct netxen_adapter * adapter,struct in_ifaddr * ifa,unsigned long event)3190 netxen_list_config_ip(struct netxen_adapter *adapter,
3191 struct in_ifaddr *ifa, unsigned long event)
3192 {
3193 struct net_device *dev;
3194 struct nx_ip_list *cur, *tmp_cur;
3195 struct list_head *head;
3196 bool ret = false;
3197
3198 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3199
3200 if (dev == NULL)
3201 goto out;
3202
3203 switch (event) {
3204 case NX_IP_UP:
3205 list_for_each(head, &adapter->ip_list) {
3206 cur = list_entry(head, struct nx_ip_list, list);
3207
3208 if (cur->ip_addr == ifa->ifa_address)
3209 goto out;
3210 }
3211
3212 cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
3213 if (cur == NULL)
3214 goto out;
3215 if (is_vlan_dev(dev))
3216 dev = vlan_dev_real_dev(dev);
3217 cur->master = !!netif_is_bond_master(dev);
3218 cur->ip_addr = ifa->ifa_address;
3219 list_add_tail(&cur->list, &adapter->ip_list);
3220 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3221 ret = true;
3222 break;
3223 case NX_IP_DOWN:
3224 list_for_each_entry_safe(cur, tmp_cur,
3225 &adapter->ip_list, list) {
3226 if (cur->ip_addr == ifa->ifa_address) {
3227 list_del(&cur->list);
3228 kfree(cur);
3229 netxen_config_ipaddr(adapter, ifa->ifa_address,
3230 NX_IP_DOWN);
3231 ret = true;
3232 break;
3233 }
3234 }
3235 }
3236 out:
3237 return ret;
3238 }
3239
3240 static void
netxen_config_indev_addr(struct netxen_adapter * adapter,struct net_device * dev,unsigned long event)3241 netxen_config_indev_addr(struct netxen_adapter *adapter,
3242 struct net_device *dev, unsigned long event)
3243 {
3244 struct in_device *indev;
3245 struct in_ifaddr *ifa;
3246
3247 if (!netxen_destip_supported(adapter))
3248 return;
3249
3250 indev = in_dev_get(dev);
3251 if (!indev)
3252 return;
3253
3254 rcu_read_lock();
3255 in_dev_for_each_ifa_rcu(ifa, indev) {
3256 switch (event) {
3257 case NETDEV_UP:
3258 netxen_list_config_ip(adapter, ifa, NX_IP_UP);
3259 break;
3260 case NETDEV_DOWN:
3261 netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
3262 break;
3263 default:
3264 break;
3265 }
3266 }
3267 rcu_read_unlock();
3268 in_dev_put(indev);
3269 }
3270
3271 static void
netxen_restore_indev_addr(struct net_device * netdev,unsigned long event)3272 netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3273
3274 {
3275 struct netxen_adapter *adapter = netdev_priv(netdev);
3276 struct nx_ip_list *pos, *tmp_pos;
3277 unsigned long ip_event;
3278
3279 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3280 netxen_config_indev_addr(adapter, netdev, event);
3281
3282 list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
3283 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3284 }
3285 }
3286
3287 static inline bool
netxen_config_checkdev(struct net_device * dev)3288 netxen_config_checkdev(struct net_device *dev)
3289 {
3290 struct netxen_adapter *adapter;
3291
3292 if (!is_netxen_netdev(dev))
3293 return false;
3294 adapter = netdev_priv(dev);
3295 if (!adapter)
3296 return false;
3297 if (!netxen_destip_supported(adapter))
3298 return false;
3299 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3300 return false;
3301
3302 return true;
3303 }
3304
3305 /**
3306 * netxen_config_master - configure addresses based on master
3307 * @dev: netxen device
3308 * @event: netdev event
3309 */
netxen_config_master(struct net_device * dev,unsigned long event)3310 static void netxen_config_master(struct net_device *dev, unsigned long event)
3311 {
3312 struct net_device *master, *slave;
3313 struct netxen_adapter *adapter = netdev_priv(dev);
3314
3315 rcu_read_lock();
3316 master = netdev_master_upper_dev_get_rcu(dev);
3317 /*
3318 * This is the case where the netxen nic is being
3319 * enslaved and is dev_open()ed in bond_enslave()
3320 * Now we should program the bond's (and its vlans')
3321 * addresses in the netxen NIC.
3322 */
3323 if (master && netif_is_bond_master(master) &&
3324 !netif_is_bond_slave(dev)) {
3325 netxen_config_indev_addr(adapter, master, event);
3326 for_each_netdev_rcu(&init_net, slave)
3327 if (is_vlan_dev(slave) &&
3328 vlan_dev_real_dev(slave) == master)
3329 netxen_config_indev_addr(adapter, slave, event);
3330 }
3331 rcu_read_unlock();
3332 /*
3333 * This is the case where the netxen nic is being
3334 * released and is dev_close()ed in bond_release()
3335 * just before IFF_BONDING is stripped.
3336 */
3337 if (!master && dev->priv_flags & IFF_BONDING)
3338 netxen_free_ip_list(adapter, true);
3339 }
3340
netxen_netdev_event(struct notifier_block * this,unsigned long event,void * ptr)3341 static int netxen_netdev_event(struct notifier_block *this,
3342 unsigned long event, void *ptr)
3343 {
3344 struct netxen_adapter *adapter;
3345 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3346 struct net_device *orig_dev = dev;
3347 struct net_device *slave;
3348
3349 recheck:
3350 if (dev == NULL)
3351 goto done;
3352
3353 if (is_vlan_dev(dev)) {
3354 dev = vlan_dev_real_dev(dev);
3355 goto recheck;
3356 }
3357 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3358 /* If this is a bonding device, look for netxen-based slaves*/
3359 if (netif_is_bond_master(dev)) {
3360 rcu_read_lock();
3361 for_each_netdev_in_bond_rcu(dev, slave) {
3362 if (!netxen_config_checkdev(slave))
3363 continue;
3364 adapter = netdev_priv(slave);
3365 netxen_config_indev_addr(adapter,
3366 orig_dev, event);
3367 }
3368 rcu_read_unlock();
3369 } else {
3370 if (!netxen_config_checkdev(dev))
3371 goto done;
3372 adapter = netdev_priv(dev);
3373 /* Act only if the actual netxen is the target */
3374 if (orig_dev == dev)
3375 netxen_config_master(dev, event);
3376 netxen_config_indev_addr(adapter, orig_dev, event);
3377 }
3378 }
3379 done:
3380 return NOTIFY_DONE;
3381 }
3382
3383 static int
netxen_inetaddr_event(struct notifier_block * this,unsigned long event,void * ptr)3384 netxen_inetaddr_event(struct notifier_block *this,
3385 unsigned long event, void *ptr)
3386 {
3387 struct netxen_adapter *adapter;
3388 struct net_device *dev, *slave;
3389 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3390 unsigned long ip_event;
3391
3392 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3393 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3394 recheck:
3395 if (dev == NULL)
3396 goto done;
3397
3398 if (is_vlan_dev(dev)) {
3399 dev = vlan_dev_real_dev(dev);
3400 goto recheck;
3401 }
3402 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3403 /* If this is a bonding device, look for netxen-based slaves*/
3404 if (netif_is_bond_master(dev)) {
3405 rcu_read_lock();
3406 for_each_netdev_in_bond_rcu(dev, slave) {
3407 if (!netxen_config_checkdev(slave))
3408 continue;
3409 adapter = netdev_priv(slave);
3410 netxen_list_config_ip(adapter, ifa, ip_event);
3411 }
3412 rcu_read_unlock();
3413 } else {
3414 if (!netxen_config_checkdev(dev))
3415 goto done;
3416 adapter = netdev_priv(dev);
3417 netxen_list_config_ip(adapter, ifa, ip_event);
3418 }
3419 }
3420 done:
3421 return NOTIFY_DONE;
3422 }
3423
3424 static struct notifier_block netxen_netdev_cb = {
3425 .notifier_call = netxen_netdev_event,
3426 };
3427
3428 static struct notifier_block netxen_inetaddr_cb = {
3429 .notifier_call = netxen_inetaddr_event,
3430 };
3431 #else
3432 static void
netxen_restore_indev_addr(struct net_device * dev,unsigned long event)3433 netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3434 { }
3435 static void
netxen_free_ip_list(struct netxen_adapter * adapter,bool master)3436 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3437 { }
3438 #endif
3439
3440 static const struct pci_error_handlers netxen_err_handler = {
3441 .error_detected = netxen_io_error_detected,
3442 .slot_reset = netxen_io_slot_reset,
3443 };
3444
3445 static SIMPLE_DEV_PM_OPS(netxen_nic_pm_ops,
3446 netxen_nic_suspend,
3447 netxen_nic_resume);
3448
3449 static struct pci_driver netxen_driver = {
3450 .name = netxen_nic_driver_name,
3451 .id_table = netxen_pci_tbl,
3452 .probe = netxen_nic_probe,
3453 .remove = netxen_nic_remove,
3454 .driver.pm = &netxen_nic_pm_ops,
3455 .shutdown = netxen_nic_shutdown,
3456 .err_handler = &netxen_err_handler
3457 };
3458
netxen_init_module(void)3459 static int __init netxen_init_module(void)
3460 {
3461 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3462
3463 #ifdef CONFIG_INET
3464 register_netdevice_notifier(&netxen_netdev_cb);
3465 register_inetaddr_notifier(&netxen_inetaddr_cb);
3466 #endif
3467 return pci_register_driver(&netxen_driver);
3468 }
3469
3470 module_init(netxen_init_module);
3471
netxen_exit_module(void)3472 static void __exit netxen_exit_module(void)
3473 {
3474 pci_unregister_driver(&netxen_driver);
3475
3476 #ifdef CONFIG_INET
3477 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3478 unregister_netdevice_notifier(&netxen_netdev_cb);
3479 #endif
3480 }
3481
3482 module_exit(netxen_exit_module);
3483
