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Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
[linux/fpc-iii.git] / drivers / net / netxen / netxen_nic_main.c
blobf7bdde111dfcba86f0bf821fd332c77580670738
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.
23 *
24 */
25
26 #include <linux/vmalloc.h>
27 #include <linux/interrupt.h>
28 #include "netxen_nic_hw.h"
29
30 #include "netxen_nic.h"
31
32 #include <linux/dma-mapping.h>
33 #include <linux/if_vlan.h>
34 #include <net/ip.h>
35 #include <linux/ipv6.h>
36 #include <linux/inetdevice.h>
37
38 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
41
42 char netxen_nic_driver_name[] = "netxen_nic";
43 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
44 NETXEN_NIC_LINUX_VERSIONID;
45
46 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
47
48 /* Default to restricted 1G auto-neg mode */
49 static int wol_port_mode = 5;
50
51 static int use_msi = 1;
52
53 static int use_msi_x = 1;
54
55 /* Local functions to NetXen NIC driver */
56 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
57 const struct pci_device_id *ent);
58 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
59 static int netxen_nic_open(struct net_device *netdev);
60 static int netxen_nic_close(struct net_device *netdev);
61 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
62 struct net_device *);
63 static void netxen_tx_timeout(struct net_device *netdev);
64 static void netxen_tx_timeout_task(struct work_struct *work);
65 static void netxen_fw_poll_work(struct work_struct *work);
66 static void netxen_schedule_work(struct netxen_adapter *adapter,
67 work_func_t func, int delay);
68 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
69 static int netxen_nic_poll(struct napi_struct *napi, int budget);
70 #ifdef CONFIG_NET_POLL_CONTROLLER
71 static void netxen_nic_poll_controller(struct net_device *netdev);
72 #endif
73
74 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
75 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
76
77 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
78 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
79
80 static irqreturn_t netxen_intr(int irq, void *data);
81 static irqreturn_t netxen_msi_intr(int irq, void *data);
82 static irqreturn_t netxen_msix_intr(int irq, void *data);
83
84 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
85
86 /* PCI Device ID Table */
87 #define ENTRY(device) \
88 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
89 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
90
91 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
92 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
93 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
94 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
95 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
96 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
97 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
98 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
99 ENTRY(PCI_DEVICE_ID_NX3031),
100 {0,}
101 };
102
103 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
104
105 static uint32_t crb_cmd_producer[4] = {
106 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
107 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
108 };
109
110 void
111 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
112 struct nx_host_tx_ring *tx_ring)
113 {
114 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
115
116 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
117 netif_stop_queue(adapter->netdev);
118 smp_mb();
119 }
120 }
121
122 static uint32_t crb_cmd_consumer[4] = {
123 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
124 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
125 };
126
127 static inline void
128 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
129 struct nx_host_tx_ring *tx_ring)
130 {
131 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
132 }
133
134 static uint32_t msi_tgt_status[8] = {
135 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
136 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
137 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
138 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
139 };
140
141 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
142
143 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
144 {
145 struct netxen_adapter *adapter = sds_ring->adapter;
146
147 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
148 }
149
150 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
151 {
152 struct netxen_adapter *adapter = sds_ring->adapter;
153
154 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
155
156 if (!NETXEN_IS_MSI_FAMILY(adapter))
157 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
158 }
159
160 static int
161 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
162 {
163 int size = sizeof(struct nx_host_sds_ring) * count;
164
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
166
167 return (recv_ctx->sds_rings == NULL);
168 }
169
170 static void
171 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
172 {
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
175
176 recv_ctx->sds_rings = NULL;
177 }
178
179 static int
180 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
181 {
182 int ring;
183 struct nx_host_sds_ring *sds_ring;
184 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
185
186 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
187 return -ENOMEM;
188
189 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
190 sds_ring = &recv_ctx->sds_rings[ring];
191 netif_napi_add(netdev, &sds_ring->napi,
192 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
193 }
194
195 return 0;
196 }
197
198 static void
199 netxen_napi_del(struct netxen_adapter *adapter)
200 {
201 int ring;
202 struct nx_host_sds_ring *sds_ring;
203 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
204
205 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
206 sds_ring = &recv_ctx->sds_rings[ring];
207 netif_napi_del(&sds_ring->napi);
208 }
209
210 netxen_free_sds_rings(&adapter->recv_ctx);
211 }
212
213 static void
214 netxen_napi_enable(struct netxen_adapter *adapter)
215 {
216 int ring;
217 struct nx_host_sds_ring *sds_ring;
218 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
219
220 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
221 sds_ring = &recv_ctx->sds_rings[ring];
222 napi_enable(&sds_ring->napi);
223 netxen_nic_enable_int(sds_ring);
224 }
225 }
226
227 static void
228 netxen_napi_disable(struct netxen_adapter *adapter)
229 {
230 int ring;
231 struct nx_host_sds_ring *sds_ring;
232 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
233
234 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
235 sds_ring = &recv_ctx->sds_rings[ring];
236 netxen_nic_disable_int(sds_ring);
237 napi_synchronize(&sds_ring->napi);
238 napi_disable(&sds_ring->napi);
239 }
240 }
241
242 static int nx_set_dma_mask(struct netxen_adapter *adapter)
243 {
244 struct pci_dev *pdev = adapter->pdev;
245 uint64_t mask, cmask;
246
247 adapter->pci_using_dac = 0;
248
249 mask = DMA_BIT_MASK(32);
250 cmask = DMA_BIT_MASK(32);
251
252 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
253 #ifndef CONFIG_IA64
254 mask = DMA_BIT_MASK(35);
255 #endif
256 } else {
257 mask = DMA_BIT_MASK(39);
258 cmask = mask;
259 }
260
261 if (pci_set_dma_mask(pdev, mask) == 0 &&
262 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
263 adapter->pci_using_dac = 1;
264 return 0;
265 }
266
267 return -EIO;
268 }
269
270 /* Update addressable range if firmware supports it */
271 static int
272 nx_update_dma_mask(struct netxen_adapter *adapter)
273 {
274 int change, shift, err;
275 uint64_t mask, old_mask, old_cmask;
276 struct pci_dev *pdev = adapter->pdev;
277
278 change = 0;
279
280 shift = NXRD32(adapter, CRB_DMA_SHIFT);
281 if (shift > 32)
282 return 0;
283
284 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
285 change = 1;
286 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
287 change = 1;
288
289 if (change) {
290 old_mask = pdev->dma_mask;
291 old_cmask = pdev->dev.coherent_dma_mask;
292
293 mask = DMA_BIT_MASK(32+shift);
294
295 err = pci_set_dma_mask(pdev, mask);
296 if (err)
297 goto err_out;
298
299 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
300
301 err = pci_set_consistent_dma_mask(pdev, mask);
302 if (err)
303 goto err_out;
304 }
305 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
306 }
307
308 return 0;
309
310 err_out:
311 pci_set_dma_mask(pdev, old_mask);
312 pci_set_consistent_dma_mask(pdev, old_cmask);
313 return err;
314 }
315
316 static int
317 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
318 {
319 u32 val, timeout;
320
321 if (first_boot == 0x55555555) {
322 /* This is the first boot after power up */
323 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
324
325 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
326 return 0;
327
328 /* PCI bus master workaround */
329 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
330 if (!(first_boot & 0x4)) {
331 first_boot |= 0x4;
332 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
334 }
335
336 /* This is the first boot after power up */
337 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
338 if (first_boot != 0x80000f) {
339 /* clear the register for future unloads/loads */
340 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
341 return -EIO;
342 }
343
344 /* Start P2 boot loader */
345 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
346 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
347 timeout = 0;
348 do {
349 msleep(1);
350 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
351
352 if (++timeout > 5000)
353 return -EIO;
354
355 } while (val == NETXEN_BDINFO_MAGIC);
356 }
357 return 0;
358 }
359
360 static void netxen_set_port_mode(struct netxen_adapter *adapter)
361 {
362 u32 val, data;
363
364 val = adapter->ahw.board_type;
365 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
366 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
367 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
368 data = NETXEN_PORT_MODE_802_3_AP;
369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
370 } else if (port_mode == NETXEN_PORT_MODE_XG) {
371 data = NETXEN_PORT_MODE_XG;
372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
373 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
374 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
376 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
377 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
378 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
379 } else {
380 data = NETXEN_PORT_MODE_AUTO_NEG;
381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
382 }
383
384 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
385 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
387 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
388 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
389 }
390 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
391 }
392 }
393
394 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
395 {
396 u32 control;
397 int pos;
398
399 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
400 if (pos) {
401 pci_read_config_dword(pdev, pos, &control);
402 if (enable)
403 control |= PCI_MSIX_FLAGS_ENABLE;
404 else
405 control = 0;
406 pci_write_config_dword(pdev, pos, control);
407 }
408 }
409
410 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
411 {
412 int i;
413
414 for (i = 0; i < count; i++)
415 adapter->msix_entries[i].entry = i;
416 }
417
418 static int
419 netxen_read_mac_addr(struct netxen_adapter *adapter)
420 {
421 int i;
422 unsigned char *p;
423 __le64 mac_addr;
424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
426
427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
429 return -EIO;
430 } else {
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
432 return -EIO;
433 }
434
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
438
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
440
441 /* set station address */
442
443 if (!is_valid_ether_addr(netdev->perm_addr))
444 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
445
446 return 0;
447 }
448
449 int netxen_nic_set_mac(struct net_device *netdev, void *p)
450 {
451 struct netxen_adapter *adapter = netdev_priv(netdev);
452 struct sockaddr *addr = p;
453
454 if (!is_valid_ether_addr(addr->sa_data))
455 return -EINVAL;
456
457 if (netif_running(netdev)) {
458 netif_device_detach(netdev);
459 netxen_napi_disable(adapter);
460 }
461
462 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
463 adapter->macaddr_set(adapter, addr->sa_data);
464
465 if (netif_running(netdev)) {
466 netif_device_attach(netdev);
467 netxen_napi_enable(adapter);
468 }
469 return 0;
470 }
471
472 static void netxen_set_multicast_list(struct net_device *dev)
473 {
474 struct netxen_adapter *adapter = netdev_priv(dev);
475
476 adapter->set_multi(dev);
477 }
478
479 static const struct net_device_ops netxen_netdev_ops = {
480 .ndo_open = netxen_nic_open,
481 .ndo_stop = netxen_nic_close,
482 .ndo_start_xmit = netxen_nic_xmit_frame,
483 .ndo_get_stats = netxen_nic_get_stats,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_multicast_list = netxen_set_multicast_list,
486 .ndo_set_mac_address = netxen_nic_set_mac,
487 .ndo_change_mtu = netxen_nic_change_mtu,
488 .ndo_tx_timeout = netxen_tx_timeout,
489 #ifdef CONFIG_NET_POLL_CONTROLLER
490 .ndo_poll_controller = netxen_nic_poll_controller,
491 #endif
492 };
493
494 static void
495 netxen_setup_intr(struct netxen_adapter *adapter)
496 {
497 struct netxen_legacy_intr_set *legacy_intrp;
498 struct pci_dev *pdev = adapter->pdev;
499 int err, num_msix;
500
501 if (adapter->rss_supported) {
502 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
503 MSIX_ENTRIES_PER_ADAPTER : 2;
504 } else
505 num_msix = 1;
506
507 adapter->max_sds_rings = 1;
508
509 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
510
511 if (adapter->ahw.revision_id >= NX_P3_B0)
512 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
513 else
514 legacy_intrp = &legacy_intr[0];
515
516 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
517 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
518 legacy_intrp->tgt_status_reg);
519 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
520 legacy_intrp->tgt_mask_reg);
521 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
522 legacy_intrp->pci_int_reg);
523 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
524
525 if (adapter->ahw.revision_id >= NX_P3_B1)
526 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
527 ISR_INT_STATE_REG);
528 else
529 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
530 CRB_INT_VECTOR);
531
532 netxen_set_msix_bit(pdev, 0);
533
534 if (adapter->msix_supported) {
535
536 netxen_init_msix_entries(adapter, num_msix);
537 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
538 if (err == 0) {
539 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
540 netxen_set_msix_bit(pdev, 1);
541
542 if (adapter->rss_supported)
543 adapter->max_sds_rings = num_msix;
544
545 dev_info(&pdev->dev, "using msi-x interrupts\n");
546 return;
547 }
548
549 if (err > 0)
550 pci_disable_msix(pdev);
551
552 /* fall through for msi */
553 }
554
555 if (use_msi && !pci_enable_msi(pdev)) {
556 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
557 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
558 msi_tgt_status[adapter->ahw.pci_func]);
559 dev_info(&pdev->dev, "using msi interrupts\n");
560 adapter->msix_entries[0].vector = pdev->irq;
561 return;
562 }
563
564 dev_info(&pdev->dev, "using legacy interrupts\n");
565 adapter->msix_entries[0].vector = pdev->irq;
566 }
567
568 static void
569 netxen_teardown_intr(struct netxen_adapter *adapter)
570 {
571 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
572 pci_disable_msix(adapter->pdev);
573 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
574 pci_disable_msi(adapter->pdev);
575 }
576
577 static void
578 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
579 {
580 if (adapter->ahw.db_base != NULL)
581 iounmap(adapter->ahw.db_base);
582 if (adapter->ahw.pci_base0 != NULL)
583 iounmap(adapter->ahw.pci_base0);
584 if (adapter->ahw.pci_base1 != NULL)
585 iounmap(adapter->ahw.pci_base1);
586 if (adapter->ahw.pci_base2 != NULL)
587 iounmap(adapter->ahw.pci_base2);
588 }
589
590 static int
591 netxen_setup_pci_map(struct netxen_adapter *adapter)
592 {
593 void __iomem *mem_ptr0 = NULL;
594 void __iomem *mem_ptr1 = NULL;
595 void __iomem *mem_ptr2 = NULL;
596 void __iomem *db_ptr = NULL;
597
598 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
599
600 struct pci_dev *pdev = adapter->pdev;
601 int pci_func = adapter->ahw.pci_func;
602
603 int err = 0;
604
605 /*
606 * Set the CRB window to invalid. If any register in window 0 is
607 * accessed it should set the window to 0 and then reset it to 1.
608 */
609 adapter->curr_window = 255;
610 adapter->ahw.qdr_sn_window = -1;
611 adapter->ahw.ddr_mn_window = -1;
612
613 /* remap phys address */
614 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
615 mem_len = pci_resource_len(pdev, 0);
616 pci_len0 = 0;
617
618 /* 128 Meg of memory */
619 if (mem_len == NETXEN_PCI_128MB_SIZE) {
620 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
621 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
622 SECOND_PAGE_GROUP_SIZE);
623 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
624 THIRD_PAGE_GROUP_SIZE);
625 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
626 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
627 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
628 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
629 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
630
631 mem_ptr0 = pci_ioremap_bar(pdev, 0);
632 if (mem_ptr0 == NULL) {
633 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
634 return -EIO;
635 }
636 pci_len0 = mem_len;
637
638 adapter->ahw.ddr_mn_window = 0;
639 adapter->ahw.qdr_sn_window = 0;
640
641 adapter->ahw.mn_win_crb = NETXEN_PCI_CRBSPACE +
642 0x100000 + PCIX_MN_WINDOW + (pci_func * 0x20);
643 adapter->ahw.ms_win_crb = NETXEN_PCI_CRBSPACE +
644 0x100000 + PCIX_SN_WINDOW;
645 if (pci_func < 4)
646 adapter->ahw.ms_win_crb += (pci_func * 0x20);
647 else
648 adapter->ahw.ms_win_crb +=
649 0xA0 + ((pci_func - 4) * 0x10);
650 } else {
651 return -EIO;
652 }
653
654 netxen_setup_hwops(adapter);
655
656 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
657
658 adapter->ahw.pci_base0 = mem_ptr0;
659 adapter->ahw.pci_len0 = pci_len0;
660 adapter->ahw.pci_base1 = mem_ptr1;
661 adapter->ahw.pci_base2 = mem_ptr2;
662
663 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
664 goto skip_doorbell;
665
666 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
667 db_len = pci_resource_len(pdev, 4);
668
669 if (db_len == 0) {
670 printk(KERN_ERR "%s: doorbell is disabled\n",
671 netxen_nic_driver_name);
672 err = -EIO;
673 goto err_out;
674 }
675
676 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
677 if (!db_ptr) {
678 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
679 netxen_nic_driver_name);
680 err = -EIO;
681 goto err_out;
682 }
683
684 skip_doorbell:
685 adapter->ahw.db_base = db_ptr;
686 adapter->ahw.db_len = db_len;
687 return 0;
688
689 err_out:
690 netxen_cleanup_pci_map(adapter);
691 return err;
692 }
693
694 static void
695 netxen_check_options(struct netxen_adapter *adapter)
696 {
697 u32 fw_major, fw_minor, fw_build;
698 char brd_name[NETXEN_MAX_SHORT_NAME];
699 char serial_num[32];
700 int i, offset, val;
701 int *ptr32;
702 struct pci_dev *pdev = adapter->pdev;
703
704 adapter->driver_mismatch = 0;
705
706 ptr32 = (int *)&serial_num;
707 offset = NX_FW_SERIAL_NUM_OFFSET;
708 for (i = 0; i < 8; i++) {
709 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
710 dev_err(&pdev->dev, "error reading board info\n");
711 adapter->driver_mismatch = 1;
712 return;
713 }
714 ptr32[i] = cpu_to_le32(val);
715 offset += sizeof(u32);
716 }
717
718 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
719 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
720 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
721
722 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
723
724 if (adapter->portnum == 0) {
725 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
726
727 printk(KERN_INFO "NetXen %s Board S/N %s Chip rev 0x%x\n",
728 brd_name, serial_num, adapter->ahw.revision_id);
729 }
730
731 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
732 adapter->driver_mismatch = 1;
733 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
734 fw_major, fw_minor, fw_build);
735 return;
736 }
737
738 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
739 i = NXRD32(adapter, NETXEN_SRE_MISC);
740 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
741 }
742
743 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
744 fw_major, fw_minor, fw_build,
745 adapter->ahw.cut_through ? "cut-through" : "legacy");
746
747 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
748 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
749
750 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
751
752 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
753 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
754 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
755 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
756 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
757 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
758 }
759
760 adapter->msix_supported = 0;
761 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
762 adapter->msix_supported = !!use_msi_x;
763 adapter->rss_supported = !!use_msi_x;
764 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
765 switch (adapter->ahw.board_type) {
766 case NETXEN_BRDTYPE_P2_SB31_10G:
767 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
768 adapter->msix_supported = !!use_msi_x;
769 adapter->rss_supported = !!use_msi_x;
770 break;
771 default:
772 break;
773 }
774 }
775
776 adapter->num_txd = MAX_CMD_DESCRIPTORS;
777
778 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
779 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
780 adapter->max_rds_rings = 3;
781 } else {
782 adapter->num_lro_rxd = 0;
783 adapter->max_rds_rings = 2;
784 }
785 }
786
787 static int
788 netxen_start_firmware(struct netxen_adapter *adapter)
789 {
790 int val, err, first_boot;
791 struct pci_dev *pdev = adapter->pdev;
792
793 /* required for NX2031 dummy dma */
794 err = nx_set_dma_mask(adapter);
795 if (err)
796 return err;
797
798 if (!netxen_can_start_firmware(adapter))
799 goto wait_init;
800
801 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
802
803 err = netxen_check_hw_init(adapter, first_boot);
804 if (err) {
805 dev_err(&pdev->dev, "error in init HW init sequence\n");
806 return err;
807 }
808
809 netxen_request_firmware(adapter);
810
811 err = netxen_need_fw_reset(adapter);
812 if (err < 0)
813 goto err_out;
814 if (err == 0)
815 goto ready;
816
817 if (first_boot != 0x55555555) {
818 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
819 netxen_pinit_from_rom(adapter, 0);
820 msleep(1);
821 }
822
823 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
824 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
825 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
826
827 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
828 netxen_set_port_mode(adapter);
829
830 err = netxen_load_firmware(adapter);
831 if (err)
832 goto err_out;
833
834 netxen_release_firmware(adapter);
835
836 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
837
838 /* Initialize multicast addr pool owners */
839 val = 0x7654;
840 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
841 val |= 0x0f000000;
842 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
843
844 }
845
846 err = netxen_init_dummy_dma(adapter);
847 if (err)
848 goto err_out;
849
850 /*
851 * Tell the hardware our version number.
852 */
853 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
854 | ((_NETXEN_NIC_LINUX_MINOR << 8))
855 | (_NETXEN_NIC_LINUX_SUBVERSION);
856 NXWR32(adapter, CRB_DRIVER_VERSION, val);
857
858 ready:
859 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
860
861 wait_init:
862 /* Handshake with the card before we register the devices. */
863 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
864 if (err) {
865 netxen_free_dummy_dma(adapter);
866 goto err_out;
867 }
868
869 nx_update_dma_mask(adapter);
870
871 netxen_check_options(adapter);
872
873 adapter->need_fw_reset = 0;
874
875 /* fall through and release firmware */
876
877 err_out:
878 netxen_release_firmware(adapter);
879 return err;
880 }
881
882 static int
883 netxen_nic_request_irq(struct netxen_adapter *adapter)
884 {
885 irq_handler_t handler;
886 struct nx_host_sds_ring *sds_ring;
887 int err, ring;
888
889 unsigned long flags = IRQF_SAMPLE_RANDOM;
890 struct net_device *netdev = adapter->netdev;
891 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
892
893 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
894 handler = netxen_msix_intr;
895 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
896 handler = netxen_msi_intr;
897 else {
898 flags |= IRQF_SHARED;
899 handler = netxen_intr;
900 }
901 adapter->irq = netdev->irq;
902
903 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
904 sds_ring = &recv_ctx->sds_rings[ring];
905 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
906 err = request_irq(sds_ring->irq, handler,
907 flags, sds_ring->name, sds_ring);
908 if (err)
909 return err;
910 }
911
912 return 0;
913 }
914
915 static void
916 netxen_nic_free_irq(struct netxen_adapter *adapter)
917 {
918 int ring;
919 struct nx_host_sds_ring *sds_ring;
920
921 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
922
923 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
924 sds_ring = &recv_ctx->sds_rings[ring];
925 free_irq(sds_ring->irq, sds_ring);
926 }
927 }
928
929 static void
930 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
931 {
932 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
933 adapter->coal.normal.data.rx_time_us =
934 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
935 adapter->coal.normal.data.rx_packets =
936 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
937 adapter->coal.normal.data.tx_time_us =
938 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
939 adapter->coal.normal.data.tx_packets =
940 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
941 }
942
943 static int
944 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
945 {
946 int err;
947
948 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
949 return -EIO;
950
951 err = adapter->init_port(adapter, adapter->physical_port);
952 if (err) {
953 printk(KERN_ERR "%s: Failed to initialize port %d\n",
954 netxen_nic_driver_name, adapter->portnum);
955 return err;
956 }
957 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
958 adapter->macaddr_set(adapter, netdev->dev_addr);
959
960 adapter->set_multi(netdev);
961 adapter->set_mtu(adapter, netdev->mtu);
962
963 adapter->ahw.linkup = 0;
964
965 if (adapter->max_sds_rings > 1)
966 netxen_config_rss(adapter, 1);
967
968 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
969 netxen_config_intr_coalesce(adapter);
970
971 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
972 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
973
974 netxen_napi_enable(adapter);
975
976 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
977 netxen_linkevent_request(adapter, 1);
978 else
979 netxen_nic_set_link_parameters(adapter);
980
981 set_bit(__NX_DEV_UP, &adapter->state);
982 return 0;
983 }
984
985 static void
986 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
987 {
988 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
989 return;
990
991 clear_bit(__NX_DEV_UP, &adapter->state);
992
993 spin_lock(&adapter->tx_clean_lock);
994 netif_carrier_off(netdev);
995 netif_tx_disable(netdev);
996
997 if (adapter->stop_port)
998 adapter->stop_port(adapter);
999
1000 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1001 netxen_p3_free_mac_list(adapter);
1002
1003 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1004
1005 netxen_napi_disable(adapter);
1006
1007 netxen_release_tx_buffers(adapter);
1008 spin_unlock(&adapter->tx_clean_lock);
1009 }
1010
1011
1012 static int
1013 netxen_nic_attach(struct netxen_adapter *adapter)
1014 {
1015 struct net_device *netdev = adapter->netdev;
1016 struct pci_dev *pdev = adapter->pdev;
1017 int err, ring;
1018 struct nx_host_rds_ring *rds_ring;
1019 struct nx_host_tx_ring *tx_ring;
1020
1021 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1022 return 0;
1023
1024 err = netxen_init_firmware(adapter);
1025 if (err)
1026 return err;
1027
1028 err = netxen_napi_add(adapter, netdev);
1029 if (err)
1030 return err;
1031
1032 err = netxen_alloc_sw_resources(adapter);
1033 if (err) {
1034 printk(KERN_ERR "%s: Error in setting sw resources\n",
1035 netdev->name);
1036 return err;
1037 }
1038
1039 err = netxen_alloc_hw_resources(adapter);
1040 if (err) {
1041 printk(KERN_ERR "%s: Error in setting hw resources\n",
1042 netdev->name);
1043 goto err_out_free_sw;
1044 }
1045
1046 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1047 tx_ring = adapter->tx_ring;
1048 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1049 crb_cmd_producer[adapter->portnum]);
1050 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1051 crb_cmd_consumer[adapter->portnum]);
1052
1053 tx_ring->producer = 0;
1054 tx_ring->sw_consumer = 0;
1055
1056 netxen_nic_update_cmd_producer(adapter, tx_ring);
1057 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1058 }
1059
1060 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1061 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1062 netxen_post_rx_buffers(adapter, ring, rds_ring);
1063 }
1064
1065 err = netxen_nic_request_irq(adapter);
1066 if (err) {
1067 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1068 netdev->name);
1069 goto err_out_free_rxbuf;
1070 }
1071
1072 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1073 netxen_nic_init_coalesce_defaults(adapter);
1074
1075 netxen_create_sysfs_entries(adapter);
1076
1077 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1078 return 0;
1079
1080 err_out_free_rxbuf:
1081 netxen_release_rx_buffers(adapter);
1082 netxen_free_hw_resources(adapter);
1083 err_out_free_sw:
1084 netxen_free_sw_resources(adapter);
1085 return err;
1086 }
1087
1088 static void
1089 netxen_nic_detach(struct netxen_adapter *adapter)
1090 {
1091 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1092 return;
1093
1094 netxen_remove_sysfs_entries(adapter);
1095
1096 netxen_free_hw_resources(adapter);
1097 netxen_release_rx_buffers(adapter);
1098 netxen_nic_free_irq(adapter);
1099 netxen_napi_del(adapter);
1100 netxen_free_sw_resources(adapter);
1101
1102 adapter->is_up = 0;
1103 }
1104
1105 int
1106 netxen_nic_reset_context(struct netxen_adapter *adapter)
1107 {
1108 int err = 0;
1109 struct net_device *netdev = adapter->netdev;
1110
1111 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1112 return -EBUSY;
1113
1114 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1115
1116 netif_device_detach(netdev);
1117
1118 if (netif_running(netdev))
1119 netxen_nic_down(adapter, netdev);
1120
1121 netxen_nic_detach(adapter);
1122
1123 if (netif_running(netdev)) {
1124 err = netxen_nic_attach(adapter);
1125 if (!err)
1126 err = netxen_nic_up(adapter, netdev);
1127
1128 if (err)
1129 goto done;
1130 }
1131
1132 netif_device_attach(netdev);
1133 }
1134
1135 done:
1136 clear_bit(__NX_RESETTING, &adapter->state);
1137 return err;
1138 }
1139
1140 static int
1141 netxen_setup_netdev(struct netxen_adapter *adapter,
1142 struct net_device *netdev)
1143 {
1144 int err = 0;
1145 struct pci_dev *pdev = adapter->pdev;
1146
1147 adapter->rx_csum = 1;
1148 adapter->mc_enabled = 0;
1149 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1150 adapter->max_mc_count = 38;
1151 else
1152 adapter->max_mc_count = 16;
1153
1154 netdev->netdev_ops = &netxen_netdev_ops;
1155 netdev->watchdog_timeo = 2*HZ;
1156
1157 netxen_nic_change_mtu(netdev, netdev->mtu);
1158
1159 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1160
1161 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1162 netdev->features |= (NETIF_F_GRO);
1163 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1164
1165 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1166 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1167 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1168 }
1169
1170 if (adapter->pci_using_dac) {
1171 netdev->features |= NETIF_F_HIGHDMA;
1172 netdev->vlan_features |= NETIF_F_HIGHDMA;
1173 }
1174
1175 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1176 netdev->features |= (NETIF_F_HW_VLAN_TX);
1177
1178 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1179 netdev->features |= NETIF_F_LRO;
1180
1181 netdev->irq = adapter->msix_entries[0].vector;
1182
1183 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1184
1185 if (netxen_read_mac_addr(adapter))
1186 dev_warn(&pdev->dev, "failed to read mac addr\n");
1187
1188 netif_carrier_off(netdev);
1189 netif_stop_queue(netdev);
1190
1191 err = register_netdev(netdev);
1192 if (err) {
1193 dev_err(&pdev->dev, "failed to register net device\n");
1194 return err;
1195 }
1196
1197 return 0;
1198 }
1199
1200 static int __devinit
1201 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1202 {
1203 struct net_device *netdev = NULL;
1204 struct netxen_adapter *adapter = NULL;
1205 int i = 0, err;
1206 int pci_func_id = PCI_FUNC(pdev->devfn);
1207 uint8_t revision_id;
1208
1209 if (pdev->class != 0x020000) {
1210 printk(KERN_DEBUG "NetXen function %d, class %x will not "
1211 "be enabled.\n",pci_func_id, pdev->class);
1212 return -ENODEV;
1213 }
1214
1215 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1216 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1217 "will not be enabled.\n",
1218 NX_P3_A0, NX_P3_B1);
1219 return -ENODEV;
1220 }
1221
1222 if ((err = pci_enable_device(pdev)))
1223 return err;
1224
1225 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1226 err = -ENODEV;
1227 goto err_out_disable_pdev;
1228 }
1229
1230 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1231 goto err_out_disable_pdev;
1232
1233 pci_set_master(pdev);
1234
1235 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1236 if(!netdev) {
1237 dev_err(&pdev->dev, "failed to allocate net_device\n");
1238 err = -ENOMEM;
1239 goto err_out_free_res;
1240 }
1241
1242 SET_NETDEV_DEV(netdev, &pdev->dev);
1243
1244 adapter = netdev_priv(netdev);
1245 adapter->netdev = netdev;
1246 adapter->pdev = pdev;
1247 adapter->ahw.pci_func = pci_func_id;
1248
1249 revision_id = pdev->revision;
1250 adapter->ahw.revision_id = revision_id;
1251
1252 rwlock_init(&adapter->adapter_lock);
1253 spin_lock_init(&adapter->tx_clean_lock);
1254 INIT_LIST_HEAD(&adapter->mac_list);
1255
1256 err = netxen_setup_pci_map(adapter);
1257 if (err)
1258 goto err_out_free_netdev;
1259
1260 /* This will be reset for mezz cards */
1261 adapter->portnum = pci_func_id;
1262
1263 err = netxen_nic_get_board_info(adapter);
1264 if (err) {
1265 dev_err(&pdev->dev, "Error getting board config info.\n");
1266 goto err_out_iounmap;
1267 }
1268
1269 /* Mezz cards have PCI function 0,2,3 enabled */
1270 switch (adapter->ahw.board_type) {
1271 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1272 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1273 if (pci_func_id >= 2)
1274 adapter->portnum = pci_func_id - 2;
1275 break;
1276 default:
1277 break;
1278 }
1279
1280 err = netxen_start_firmware(adapter);
1281 if (err)
1282 goto err_out_iounmap;
1283
1284 /*
1285 * See if the firmware gave us a virtual-physical port mapping.
1286 */
1287 adapter->physical_port = adapter->portnum;
1288 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1289 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1290 if (i != 0x55555555)
1291 adapter->physical_port = i;
1292 }
1293
1294 netxen_nic_clear_stats(adapter);
1295
1296 netxen_setup_intr(adapter);
1297
1298 err = netxen_setup_netdev(adapter, netdev);
1299 if (err)
1300 goto err_out_disable_msi;
1301
1302 pci_set_drvdata(pdev, adapter);
1303
1304 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1305
1306 switch (adapter->ahw.port_type) {
1307 case NETXEN_NIC_GBE:
1308 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1309 adapter->netdev->name);
1310 break;
1311 case NETXEN_NIC_XGBE:
1312 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1313 adapter->netdev->name);
1314 break;
1315 }
1316
1317 return 0;
1318
1319 err_out_disable_msi:
1320 netxen_teardown_intr(adapter);
1321
1322 netxen_free_dummy_dma(adapter);
1323
1324 nx_decr_dev_ref_cnt(adapter);
1325
1326 err_out_iounmap:
1327 netxen_cleanup_pci_map(adapter);
1328
1329 err_out_free_netdev:
1330 free_netdev(netdev);
1331
1332 err_out_free_res:
1333 pci_release_regions(pdev);
1334
1335 err_out_disable_pdev:
1336 pci_set_drvdata(pdev, NULL);
1337 pci_disable_device(pdev);
1338 return err;
1339 }
1340
1341 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1342 {
1343 struct netxen_adapter *adapter;
1344 struct net_device *netdev;
1345
1346 adapter = pci_get_drvdata(pdev);
1347 if (adapter == NULL)
1348 return;
1349
1350 netdev = adapter->netdev;
1351
1352 netxen_cancel_fw_work(adapter);
1353
1354 unregister_netdev(netdev);
1355
1356 cancel_work_sync(&adapter->tx_timeout_task);
1357
1358 netxen_nic_detach(adapter);
1359
1360 nx_decr_dev_ref_cnt(adapter);
1361
1362 if (adapter->portnum == 0)
1363 netxen_free_dummy_dma(adapter);
1364
1365 clear_bit(__NX_RESETTING, &adapter->state);
1366
1367 netxen_teardown_intr(adapter);
1368
1369 netxen_cleanup_pci_map(adapter);
1370
1371 netxen_release_firmware(adapter);
1372
1373 pci_release_regions(pdev);
1374 pci_disable_device(pdev);
1375 pci_set_drvdata(pdev, NULL);
1376
1377 free_netdev(netdev);
1378 }
1379 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1380 {
1381 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1382 struct net_device *netdev = adapter->netdev;
1383 int retval;
1384
1385 netif_device_detach(netdev);
1386
1387 netxen_cancel_fw_work(adapter);
1388
1389 if (netif_running(netdev))
1390 netxen_nic_down(adapter, netdev);
1391
1392 cancel_work_sync(&adapter->tx_timeout_task);
1393
1394 netxen_nic_detach(adapter);
1395
1396 if (adapter->portnum == 0)
1397 netxen_free_dummy_dma(adapter);
1398
1399 nx_decr_dev_ref_cnt(adapter);
1400
1401 clear_bit(__NX_RESETTING, &adapter->state);
1402
1403 retval = pci_save_state(pdev);
1404 if (retval)
1405 return retval;
1406
1407 if (netxen_nic_wol_supported(adapter)) {
1408 pci_enable_wake(pdev, PCI_D3cold, 1);
1409 pci_enable_wake(pdev, PCI_D3hot, 1);
1410 }
1411
1412 pci_disable_device(pdev);
1413
1414 return 0;
1415 }
1416 static void netxen_nic_shutdown(struct pci_dev *pdev)
1417 {
1418 if (__netxen_nic_shutdown(pdev))
1419 return;
1420 }
1421 #ifdef CONFIG_PM
1422 static int
1423 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1424 {
1425 int retval;
1426
1427 retval = __netxen_nic_shutdown(pdev);
1428 if (retval)
1429 return retval;
1430
1431 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1432 return 0;
1433 }
1434
1435 static int
1436 netxen_nic_resume(struct pci_dev *pdev)
1437 {
1438 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1439 struct net_device *netdev = adapter->netdev;
1440 int err;
1441
1442 pci_set_power_state(pdev, PCI_D0);
1443 pci_restore_state(pdev);
1444
1445 err = pci_enable_device(pdev);
1446 if (err)
1447 return err;
1448
1449 adapter->curr_window = 255;
1450
1451 err = netxen_start_firmware(adapter);
1452 if (err) {
1453 dev_err(&pdev->dev, "failed to start firmware\n");
1454 return err;
1455 }
1456
1457 if (netif_running(netdev)) {
1458 err = netxen_nic_attach(adapter);
1459 if (err)
1460 goto err_out;
1461
1462 err = netxen_nic_up(adapter, netdev);
1463 if (err)
1464 goto err_out_detach;
1465
1466 netif_device_attach(netdev);
1467
1468 netxen_config_indev_addr(netdev, NETDEV_UP);
1469 }
1470
1471 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1472
1473 err_out_detach:
1474 netxen_nic_detach(adapter);
1475 err_out:
1476 nx_decr_dev_ref_cnt(adapter);
1477 return err;
1478 }
1479 #endif
1480
1481 static int netxen_nic_open(struct net_device *netdev)
1482 {
1483 struct netxen_adapter *adapter = netdev_priv(netdev);
1484 int err = 0;
1485
1486 if (adapter->driver_mismatch)
1487 return -EIO;
1488
1489 err = netxen_nic_attach(adapter);
1490 if (err)
1491 return err;
1492
1493 err = netxen_nic_up(adapter, netdev);
1494 if (err)
1495 goto err_out;
1496
1497 netif_start_queue(netdev);
1498
1499 return 0;
1500
1501 err_out:
1502 netxen_nic_detach(adapter);
1503 return err;
1504 }
1505
1506 /*
1507 * netxen_nic_close - Disables a network interface entry point
1508 */
1509 static int netxen_nic_close(struct net_device *netdev)
1510 {
1511 struct netxen_adapter *adapter = netdev_priv(netdev);
1512
1513 netxen_nic_down(adapter, netdev);
1514 return 0;
1515 }
1516
1517 static void
1518 netxen_tso_check(struct net_device *netdev,
1519 struct nx_host_tx_ring *tx_ring,
1520 struct cmd_desc_type0 *first_desc,
1521 struct sk_buff *skb)
1522 {
1523 u8 opcode = TX_ETHER_PKT;
1524 __be16 protocol = skb->protocol;
1525 u16 flags = 0, vid = 0;
1526 u32 producer;
1527 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1528 struct cmd_desc_type0 *hwdesc;
1529 struct vlan_ethhdr *vh;
1530
1531 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1532
1533 vh = (struct vlan_ethhdr *)skb->data;
1534 protocol = vh->h_vlan_encapsulated_proto;
1535 flags = FLAGS_VLAN_TAGGED;
1536
1537 } else if (vlan_tx_tag_present(skb)) {
1538
1539 flags = FLAGS_VLAN_OOB;
1540 vid = vlan_tx_tag_get(skb);
1541 netxen_set_tx_vlan_tci(first_desc, vid);
1542 vlan_oob = 1;
1543 }
1544
1545 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1546 skb_shinfo(skb)->gso_size > 0) {
1547
1548 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1549
1550 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1551 first_desc->total_hdr_length = hdr_len;
1552 if (vlan_oob) {
1553 first_desc->total_hdr_length += VLAN_HLEN;
1554 first_desc->tcp_hdr_offset = VLAN_HLEN;
1555 first_desc->ip_hdr_offset = VLAN_HLEN;
1556 /* Only in case of TSO on vlan device */
1557 flags |= FLAGS_VLAN_TAGGED;
1558 }
1559
1560 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1561 TX_TCP_LSO6 : TX_TCP_LSO;
1562 tso = 1;
1563
1564 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1565 u8 l4proto;
1566
1567 if (protocol == cpu_to_be16(ETH_P_IP)) {
1568 l4proto = ip_hdr(skb)->protocol;
1569
1570 if (l4proto == IPPROTO_TCP)
1571 opcode = TX_TCP_PKT;
1572 else if(l4proto == IPPROTO_UDP)
1573 opcode = TX_UDP_PKT;
1574 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1575 l4proto = ipv6_hdr(skb)->nexthdr;
1576
1577 if (l4proto == IPPROTO_TCP)
1578 opcode = TX_TCPV6_PKT;
1579 else if(l4proto == IPPROTO_UDP)
1580 opcode = TX_UDPV6_PKT;
1581 }
1582 }
1583
1584 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1585 first_desc->ip_hdr_offset += skb_network_offset(skb);
1586 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1587
1588 if (!tso)
1589 return;
1590
1591 /* For LSO, we need to copy the MAC/IP/TCP headers into
1592 * the descriptor ring
1593 */
1594 producer = tx_ring->producer;
1595 copied = 0;
1596 offset = 2;
1597
1598 if (vlan_oob) {
1599 /* Create a TSO vlan header template for firmware */
1600
1601 hwdesc = &tx_ring->desc_head[producer];
1602 tx_ring->cmd_buf_arr[producer].skb = NULL;
1603
1604 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1605 hdr_len + VLAN_HLEN);
1606
1607 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1608 skb_copy_from_linear_data(skb, vh, 12);
1609 vh->h_vlan_proto = htons(ETH_P_8021Q);
1610 vh->h_vlan_TCI = htons(vid);
1611 skb_copy_from_linear_data_offset(skb, 12,
1612 (char *)vh + 16, copy_len - 16);
1613
1614 copied = copy_len - VLAN_HLEN;
1615 offset = 0;
1616
1617 producer = get_next_index(producer, tx_ring->num_desc);
1618 }
1619
1620 while (copied < hdr_len) {
1621
1622 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1623 (hdr_len - copied));
1624
1625 hwdesc = &tx_ring->desc_head[producer];
1626 tx_ring->cmd_buf_arr[producer].skb = NULL;
1627
1628 skb_copy_from_linear_data_offset(skb, copied,
1629 (char *)hwdesc + offset, copy_len);
1630
1631 copied += copy_len;
1632 offset = 0;
1633
1634 producer = get_next_index(producer, tx_ring->num_desc);
1635 }
1636
1637 tx_ring->producer = producer;
1638 barrier();
1639 }
1640
1641 static int
1642 netxen_map_tx_skb(struct pci_dev *pdev,
1643 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1644 {
1645 struct netxen_skb_frag *nf;
1646 struct skb_frag_struct *frag;
1647 int i, nr_frags;
1648 dma_addr_t map;
1649
1650 nr_frags = skb_shinfo(skb)->nr_frags;
1651 nf = &pbuf->frag_array[0];
1652
1653 map = pci_map_single(pdev, skb->data,
1654 skb_headlen(skb), PCI_DMA_TODEVICE);
1655 if (pci_dma_mapping_error(pdev, map))
1656 goto out_err;
1657
1658 nf->dma = map;
1659 nf->length = skb_headlen(skb);
1660
1661 for (i = 0; i < nr_frags; i++) {
1662 frag = &skb_shinfo(skb)->frags[i];
1663 nf = &pbuf->frag_array[i+1];
1664
1665 map = pci_map_page(pdev, frag->page, frag->page_offset,
1666 frag->size, PCI_DMA_TODEVICE);
1667 if (pci_dma_mapping_error(pdev, map))
1668 goto unwind;
1669
1670 nf->dma = map;
1671 nf->length = frag->size;
1672 }
1673
1674 return 0;
1675
1676 unwind:
1677 while (--i >= 0) {
1678 nf = &pbuf->frag_array[i+1];
1679 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1680 }
1681
1682 nf = &pbuf->frag_array[0];
1683 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1684
1685 out_err:
1686 return -ENOMEM;
1687 }
1688
1689 static inline void
1690 netxen_clear_cmddesc(u64 *desc)
1691 {
1692 desc[0] = 0ULL;
1693 desc[2] = 0ULL;
1694 }
1695
1696 static netdev_tx_t
1697 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1698 {
1699 struct netxen_adapter *adapter = netdev_priv(netdev);
1700 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1701 struct netxen_cmd_buffer *pbuf;
1702 struct netxen_skb_frag *buffrag;
1703 struct cmd_desc_type0 *hwdesc, *first_desc;
1704 struct pci_dev *pdev;
1705 int i, k;
1706
1707 u32 producer;
1708 int frag_count, no_of_desc;
1709 u32 num_txd = tx_ring->num_desc;
1710
1711 frag_count = skb_shinfo(skb)->nr_frags + 1;
1712
1713 /* 4 fragments per cmd des */
1714 no_of_desc = (frag_count + 3) >> 2;
1715
1716 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1717 netif_stop_queue(netdev);
1718 return NETDEV_TX_BUSY;
1719 }
1720
1721 producer = tx_ring->producer;
1722 pbuf = &tx_ring->cmd_buf_arr[producer];
1723
1724 pdev = adapter->pdev;
1725
1726 if (netxen_map_tx_skb(pdev, skb, pbuf))
1727 goto drop_packet;
1728
1729 pbuf->skb = skb;
1730 pbuf->frag_count = frag_count;
1731
1732 first_desc = hwdesc = &tx_ring->desc_head[producer];
1733 netxen_clear_cmddesc((u64 *)hwdesc);
1734
1735 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1736 netxen_set_tx_port(first_desc, adapter->portnum);
1737
1738 for (i = 0; i < frag_count; i++) {
1739
1740 k = i % 4;
1741
1742 if ((k == 0) && (i > 0)) {
1743 /* move to next desc.*/
1744 producer = get_next_index(producer, num_txd);
1745 hwdesc = &tx_ring->desc_head[producer];
1746 netxen_clear_cmddesc((u64 *)hwdesc);
1747 tx_ring->cmd_buf_arr[producer].skb = NULL;
1748 }
1749
1750 buffrag = &pbuf->frag_array[i];
1751
1752 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1753 switch (k) {
1754 case 0:
1755 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1756 break;
1757 case 1:
1758 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1759 break;
1760 case 2:
1761 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1762 break;
1763 case 3:
1764 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1765 break;
1766 }
1767 }
1768
1769 tx_ring->producer = get_next_index(producer, num_txd);
1770
1771 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1772
1773 netxen_nic_update_cmd_producer(adapter, tx_ring);
1774
1775 adapter->stats.txbytes += skb->len;
1776 adapter->stats.xmitcalled++;
1777
1778 return NETDEV_TX_OK;
1779
1780 drop_packet:
1781 adapter->stats.txdropped++;
1782 dev_kfree_skb_any(skb);
1783 return NETDEV_TX_OK;
1784 }
1785
1786 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1787 {
1788 struct net_device *netdev = adapter->netdev;
1789 uint32_t temp, temp_state, temp_val;
1790 int rv = 0;
1791
1792 temp = NXRD32(adapter, CRB_TEMP_STATE);
1793
1794 temp_state = nx_get_temp_state(temp);
1795 temp_val = nx_get_temp_val(temp);
1796
1797 if (temp_state == NX_TEMP_PANIC) {
1798 printk(KERN_ALERT
1799 "%s: Device temperature %d degrees C exceeds"
1800 " maximum allowed. Hardware has been shut down.\n",
1801 netdev->name, temp_val);
1802 rv = 1;
1803 } else if (temp_state == NX_TEMP_WARN) {
1804 if (adapter->temp == NX_TEMP_NORMAL) {
1805 printk(KERN_ALERT
1806 "%s: Device temperature %d degrees C "
1807 "exceeds operating range."
1808 " Immediate action needed.\n",
1809 netdev->name, temp_val);
1810 }
1811 } else {
1812 if (adapter->temp == NX_TEMP_WARN) {
1813 printk(KERN_INFO
1814 "%s: Device temperature is now %d degrees C"
1815 " in normal range.\n", netdev->name,
1816 temp_val);
1817 }
1818 }
1819 adapter->temp = temp_state;
1820 return rv;
1821 }
1822
1823 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1824 {
1825 struct net_device *netdev = adapter->netdev;
1826
1827 if (adapter->ahw.linkup && !linkup) {
1828 printk(KERN_INFO "%s: %s NIC Link is down\n",
1829 netxen_nic_driver_name, netdev->name);
1830 adapter->ahw.linkup = 0;
1831 if (netif_running(netdev)) {
1832 netif_carrier_off(netdev);
1833 netif_stop_queue(netdev);
1834 }
1835 adapter->link_changed = !adapter->has_link_events;
1836 } else if (!adapter->ahw.linkup && linkup) {
1837 printk(KERN_INFO "%s: %s NIC Link is up\n",
1838 netxen_nic_driver_name, netdev->name);
1839 adapter->ahw.linkup = 1;
1840 if (netif_running(netdev)) {
1841 netif_carrier_on(netdev);
1842 netif_wake_queue(netdev);
1843 }
1844 adapter->link_changed = !adapter->has_link_events;
1845 }
1846 }
1847
1848 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1849 {
1850 u32 val, port, linkup;
1851
1852 port = adapter->physical_port;
1853
1854 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1855 val = NXRD32(adapter, CRB_XG_STATE_P3);
1856 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1857 linkup = (val == XG_LINK_UP_P3);
1858 } else {
1859 val = NXRD32(adapter, CRB_XG_STATE);
1860 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1861 linkup = (val >> port) & 1;
1862 else {
1863 val = (val >> port*8) & 0xff;
1864 linkup = (val == XG_LINK_UP);
1865 }
1866 }
1867
1868 netxen_advert_link_change(adapter, linkup);
1869 }
1870
1871 static void netxen_tx_timeout(struct net_device *netdev)
1872 {
1873 struct netxen_adapter *adapter = netdev_priv(netdev);
1874
1875 if (test_bit(__NX_RESETTING, &adapter->state))
1876 return;
1877
1878 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1879 schedule_work(&adapter->tx_timeout_task);
1880 }
1881
1882 static void netxen_tx_timeout_task(struct work_struct *work)
1883 {
1884 struct netxen_adapter *adapter =
1885 container_of(work, struct netxen_adapter, tx_timeout_task);
1886
1887 if (!netif_running(adapter->netdev))
1888 return;
1889
1890 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1891 return;
1892
1893 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1894 goto request_reset;
1895
1896 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1897 /* try to scrub interrupt */
1898 netxen_napi_disable(adapter);
1899
1900 adapter->netdev->trans_start = jiffies;
1901
1902 netxen_napi_enable(adapter);
1903
1904 netif_wake_queue(adapter->netdev);
1905
1906 goto done;
1907
1908 } else {
1909 if (!netxen_nic_reset_context(adapter)) {
1910 adapter->netdev->trans_start = jiffies;
1911 goto done;
1912 }
1913
1914 /* context reset failed, fall through for fw reset */
1915 }
1916
1917 request_reset:
1918 adapter->need_fw_reset = 1;
1919 done:
1920 clear_bit(__NX_RESETTING, &adapter->state);
1921 }
1922
1923 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1924 {
1925 struct netxen_adapter *adapter = netdev_priv(netdev);
1926 struct net_device_stats *stats = &adapter->net_stats;
1927
1928 memset(stats, 0, sizeof(*stats));
1929
1930 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1931 stats->tx_packets = adapter->stats.xmitfinished;
1932 stats->rx_bytes = adapter->stats.rxbytes;
1933 stats->tx_bytes = adapter->stats.txbytes;
1934 stats->rx_dropped = adapter->stats.rxdropped;
1935 stats->tx_dropped = adapter->stats.txdropped;
1936
1937 return stats;
1938 }
1939
1940 static irqreturn_t netxen_intr(int irq, void *data)
1941 {
1942 struct nx_host_sds_ring *sds_ring = data;
1943 struct netxen_adapter *adapter = sds_ring->adapter;
1944 u32 status = 0;
1945
1946 status = readl(adapter->isr_int_vec);
1947
1948 if (!(status & adapter->int_vec_bit))
1949 return IRQ_NONE;
1950
1951 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1952 /* check interrupt state machine, to be sure */
1953 status = readl(adapter->crb_int_state_reg);
1954 if (!ISR_LEGACY_INT_TRIGGERED(status))
1955 return IRQ_NONE;
1956
1957 } else {
1958 unsigned long our_int = 0;
1959
1960 our_int = readl(adapter->crb_int_state_reg);
1961
1962 /* not our interrupt */
1963 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1964 return IRQ_NONE;
1965
1966 /* claim interrupt */
1967 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
1968
1969 /* clear interrupt */
1970 netxen_nic_disable_int(sds_ring);
1971 }
1972
1973 writel(0xffffffff, adapter->tgt_status_reg);
1974 /* read twice to ensure write is flushed */
1975 readl(adapter->isr_int_vec);
1976 readl(adapter->isr_int_vec);
1977
1978 napi_schedule(&sds_ring->napi);
1979
1980 return IRQ_HANDLED;
1981 }
1982
1983 static irqreturn_t netxen_msi_intr(int irq, void *data)
1984 {
1985 struct nx_host_sds_ring *sds_ring = data;
1986 struct netxen_adapter *adapter = sds_ring->adapter;
1987
1988 /* clear interrupt */
1989 writel(0xffffffff, adapter->tgt_status_reg);
1990
1991 napi_schedule(&sds_ring->napi);
1992 return IRQ_HANDLED;
1993 }
1994
1995 static irqreturn_t netxen_msix_intr(int irq, void *data)
1996 {
1997 struct nx_host_sds_ring *sds_ring = data;
1998
1999 napi_schedule(&sds_ring->napi);
2000 return IRQ_HANDLED;
2001 }
2002
2003 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2004 {
2005 struct nx_host_sds_ring *sds_ring =
2006 container_of(napi, struct nx_host_sds_ring, napi);
2007
2008 struct netxen_adapter *adapter = sds_ring->adapter;
2009
2010 int tx_complete;
2011 int work_done;
2012
2013 tx_complete = netxen_process_cmd_ring(adapter);
2014
2015 work_done = netxen_process_rcv_ring(sds_ring, budget);
2016
2017 if ((work_done < budget) && tx_complete) {
2018 napi_complete(&sds_ring->napi);
2019 if (netif_running(adapter->netdev))
2020 netxen_nic_enable_int(sds_ring);
2021 }
2022
2023 return work_done;
2024 }
2025
2026 #ifdef CONFIG_NET_POLL_CONTROLLER
2027 static void netxen_nic_poll_controller(struct net_device *netdev)
2028 {
2029 struct netxen_adapter *adapter = netdev_priv(netdev);
2030 disable_irq(adapter->irq);
2031 netxen_intr(adapter->irq, adapter);
2032 enable_irq(adapter->irq);
2033 }
2034 #endif
2035
2036 static int
2037 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2038 {
2039 int count;
2040 if (netxen_api_lock(adapter))
2041 return -EIO;
2042
2043 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2044
2045 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2046
2047 netxen_api_unlock(adapter);
2048 return count;
2049 }
2050
2051 static int
2052 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2053 {
2054 int count;
2055 if (netxen_api_lock(adapter))
2056 return -EIO;
2057
2058 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2059 WARN_ON(count == 0);
2060
2061 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2062
2063 if (count == 0)
2064 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2065
2066 netxen_api_unlock(adapter);
2067 return count;
2068 }
2069
2070 static void
2071 nx_dev_request_reset(struct netxen_adapter *adapter)
2072 {
2073 u32 state;
2074
2075 if (netxen_api_lock(adapter))
2076 return;
2077
2078 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2079
2080 if (state != NX_DEV_INITALIZING)
2081 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2082
2083 netxen_api_unlock(adapter);
2084 }
2085
2086 static int
2087 netxen_can_start_firmware(struct netxen_adapter *adapter)
2088 {
2089 int count;
2090 int can_start = 0;
2091
2092 if (netxen_api_lock(adapter))
2093 return 0;
2094
2095 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2096
2097 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2098 count = 0;
2099
2100 if (count == 0) {
2101 can_start = 1;
2102 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2103 }
2104
2105 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2106
2107 netxen_api_unlock(adapter);
2108
2109 return can_start;
2110 }
2111
2112 static void
2113 netxen_schedule_work(struct netxen_adapter *adapter,
2114 work_func_t func, int delay)
2115 {
2116 INIT_DELAYED_WORK(&adapter->fw_work, func);
2117 schedule_delayed_work(&adapter->fw_work, delay);
2118 }
2119
2120 static void
2121 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2122 {
2123 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2124 msleep(10);
2125
2126 cancel_delayed_work_sync(&adapter->fw_work);
2127 }
2128
2129 static void
2130 netxen_attach_work(struct work_struct *work)
2131 {
2132 struct netxen_adapter *adapter = container_of(work,
2133 struct netxen_adapter, fw_work.work);
2134 struct net_device *netdev = adapter->netdev;
2135 int err = 0;
2136
2137 if (netif_running(netdev)) {
2138 err = netxen_nic_attach(adapter);
2139 if (err)
2140 goto done;
2141
2142 err = netxen_nic_up(adapter, netdev);
2143 if (err) {
2144 netxen_nic_detach(adapter);
2145 goto done;
2146 }
2147
2148 netxen_config_indev_addr(netdev, NETDEV_UP);
2149 }
2150
2151 netif_device_attach(netdev);
2152
2153 done:
2154 adapter->fw_fail_cnt = 0;
2155 clear_bit(__NX_RESETTING, &adapter->state);
2156 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2157 }
2158
2159 static void
2160 netxen_fwinit_work(struct work_struct *work)
2161 {
2162 struct netxen_adapter *adapter = container_of(work,
2163 struct netxen_adapter, fw_work.work);
2164 int dev_state;
2165
2166 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2167
2168 switch (dev_state) {
2169 case NX_DEV_COLD:
2170 case NX_DEV_READY:
2171 if (!netxen_start_firmware(adapter)) {
2172 netxen_schedule_work(adapter, netxen_attach_work, 0);
2173 return;
2174 }
2175 break;
2176
2177 case NX_DEV_INITALIZING:
2178 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2179 netxen_schedule_work(adapter,
2180 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2181 return;
2182 }
2183 break;
2184
2185 case NX_DEV_FAILED:
2186 default:
2187 break;
2188 }
2189
2190 nx_incr_dev_ref_cnt(adapter);
2191 clear_bit(__NX_RESETTING, &adapter->state);
2192 }
2193
2194 static void
2195 netxen_detach_work(struct work_struct *work)
2196 {
2197 struct netxen_adapter *adapter = container_of(work,
2198 struct netxen_adapter, fw_work.work);
2199 struct net_device *netdev = adapter->netdev;
2200 int ref_cnt, delay;
2201 u32 status;
2202
2203 netif_device_detach(netdev);
2204
2205 if (netif_running(netdev))
2206 netxen_nic_down(adapter, netdev);
2207
2208 netxen_nic_detach(adapter);
2209
2210 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2211
2212 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2213
2214 if (status & NX_RCODE_FATAL_ERROR)
2215 return;
2216
2217 if (adapter->temp == NX_TEMP_PANIC)
2218 return;
2219
2220 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2221
2222 adapter->fw_wait_cnt = 0;
2223 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2224 }
2225
2226 static int
2227 netxen_check_health(struct netxen_adapter *adapter)
2228 {
2229 u32 state, heartbit;
2230 struct net_device *netdev = adapter->netdev;
2231
2232 if (netxen_nic_check_temp(adapter))
2233 goto detach;
2234
2235 if (adapter->need_fw_reset) {
2236 nx_dev_request_reset(adapter);
2237 goto detach;
2238 }
2239
2240 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2241 if (state == NX_DEV_NEED_RESET)
2242 goto detach;
2243
2244 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2245 return 0;
2246
2247 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2248 if (heartbit != adapter->heartbit) {
2249 adapter->heartbit = heartbit;
2250 adapter->fw_fail_cnt = 0;
2251 return 0;
2252 }
2253
2254 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2255 return 0;
2256
2257 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2258
2259 dev_info(&netdev->dev, "firmware hang detected\n");
2260
2261 detach:
2262 if (!test_and_set_bit(__NX_RESETTING, &adapter->state))
2263 netxen_schedule_work(adapter, netxen_detach_work, 0);
2264 return 1;
2265 }
2266
2267 static void
2268 netxen_fw_poll_work(struct work_struct *work)
2269 {
2270 struct netxen_adapter *adapter = container_of(work,
2271 struct netxen_adapter, fw_work.work);
2272
2273 if (test_bit(__NX_RESETTING, &adapter->state))
2274 goto reschedule;
2275
2276 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2277 if (!adapter->has_link_events) {
2278
2279 netxen_nic_handle_phy_intr(adapter);
2280
2281 if (adapter->link_changed)
2282 netxen_nic_set_link_parameters(adapter);
2283 }
2284 }
2285
2286 if (netxen_check_health(adapter))
2287 return;
2288
2289 reschedule:
2290 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2291 }
2292
2293 static ssize_t
2294 netxen_store_bridged_mode(struct device *dev,
2295 struct device_attribute *attr, const char *buf, size_t len)
2296 {
2297 struct net_device *net = to_net_dev(dev);
2298 struct netxen_adapter *adapter = netdev_priv(net);
2299 unsigned long new;
2300 int ret = -EINVAL;
2301
2302 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2303 goto err_out;
2304
2305 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2306 goto err_out;
2307
2308 if (strict_strtoul(buf, 2, &new))
2309 goto err_out;
2310
2311 if (!netxen_config_bridged_mode(adapter, !!new))
2312 ret = len;
2313
2314 err_out:
2315 return ret;
2316 }
2317
2318 static ssize_t
2319 netxen_show_bridged_mode(struct device *dev,
2320 struct device_attribute *attr, char *buf)
2321 {
2322 struct net_device *net = to_net_dev(dev);
2323 struct netxen_adapter *adapter;
2324 int bridged_mode = 0;
2325
2326 adapter = netdev_priv(net);
2327
2328 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2329 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2330
2331 return sprintf(buf, "%d\n", bridged_mode);
2332 }
2333
2334 static struct device_attribute dev_attr_bridged_mode = {
2335 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2336 .show = netxen_show_bridged_mode,
2337 .store = netxen_store_bridged_mode,
2338 };
2339
2340 static void
2341 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2342 {
2343 struct net_device *netdev = adapter->netdev;
2344 struct device *dev = &netdev->dev;
2345
2346 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2347 /* bridged_mode control */
2348 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2349 dev_warn(&netdev->dev,
2350 "failed to create bridged_mode sysfs entry\n");
2351 }
2352 }
2353 }
2354
2355 static void
2356 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2357 {
2358 struct net_device *netdev = adapter->netdev;
2359 struct device *dev = &netdev->dev;
2360
2361 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2362 device_remove_file(dev, &dev_attr_bridged_mode);
2363 }
2364
2365 #ifdef CONFIG_INET
2366
2367 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2368
2369 static int
2370 netxen_destip_supported(struct netxen_adapter *adapter)
2371 {
2372 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2373 return 0;
2374
2375 if (adapter->ahw.cut_through)
2376 return 0;
2377
2378 return 1;
2379 }
2380
2381 static void
2382 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2383 {
2384 struct in_device *indev;
2385 struct netxen_adapter *adapter = netdev_priv(dev);
2386
2387 if (!netxen_destip_supported(adapter))
2388 return;
2389
2390 indev = in_dev_get(dev);
2391 if (!indev)
2392 return;
2393
2394 for_ifa(indev) {
2395 switch (event) {
2396 case NETDEV_UP:
2397 netxen_config_ipaddr(adapter,
2398 ifa->ifa_address, NX_IP_UP);
2399 break;
2400 case NETDEV_DOWN:
2401 netxen_config_ipaddr(adapter,
2402 ifa->ifa_address, NX_IP_DOWN);
2403 break;
2404 default:
2405 break;
2406 }
2407 } endfor_ifa(indev);
2408
2409 in_dev_put(indev);
2410 return;
2411 }
2412
2413 static int netxen_netdev_event(struct notifier_block *this,
2414 unsigned long event, void *ptr)
2415 {
2416 struct netxen_adapter *adapter;
2417 struct net_device *dev = (struct net_device *)ptr;
2418
2419 recheck:
2420 if (dev == NULL)
2421 goto done;
2422
2423 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2424 dev = vlan_dev_real_dev(dev);
2425 goto recheck;
2426 }
2427
2428 if (!is_netxen_netdev(dev))
2429 goto done;
2430
2431 adapter = netdev_priv(dev);
2432
2433 if (!adapter)
2434 goto done;
2435
2436 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2437 goto done;
2438
2439 netxen_config_indev_addr(dev, event);
2440 done:
2441 return NOTIFY_DONE;
2442 }
2443
2444 static int
2445 netxen_inetaddr_event(struct notifier_block *this,
2446 unsigned long event, void *ptr)
2447 {
2448 struct netxen_adapter *adapter;
2449 struct net_device *dev;
2450
2451 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2452
2453 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2454
2455 recheck:
2456 if (dev == NULL || !netif_running(dev))
2457 goto done;
2458
2459 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2460 dev = vlan_dev_real_dev(dev);
2461 goto recheck;
2462 }
2463
2464 if (!is_netxen_netdev(dev))
2465 goto done;
2466
2467 adapter = netdev_priv(dev);
2468
2469 if (!adapter || !netxen_destip_supported(adapter))
2470 goto done;
2471
2472 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2473 goto done;
2474
2475 switch (event) {
2476 case NETDEV_UP:
2477 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2478 break;
2479 case NETDEV_DOWN:
2480 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2481 break;
2482 default:
2483 break;
2484 }
2485
2486 done:
2487 return NOTIFY_DONE;
2488 }
2489
2490 static struct notifier_block netxen_netdev_cb = {
2491 .notifier_call = netxen_netdev_event,
2492 };
2493
2494 static struct notifier_block netxen_inetaddr_cb = {
2495 .notifier_call = netxen_inetaddr_event,
2496 };
2497 #else
2498 static void
2499 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2500 { }
2501 #endif
2502
2503 static struct pci_driver netxen_driver = {
2504 .name = netxen_nic_driver_name,
2505 .id_table = netxen_pci_tbl,
2506 .probe = netxen_nic_probe,
2507 .remove = __devexit_p(netxen_nic_remove),
2508 #ifdef CONFIG_PM
2509 .suspend = netxen_nic_suspend,
2510 .resume = netxen_nic_resume,
2511 #endif
2512 .shutdown = netxen_nic_shutdown
2513 };
2514
2515 static int __init netxen_init_module(void)
2516 {
2517 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2518
2519 #ifdef CONFIG_INET
2520 register_netdevice_notifier(&netxen_netdev_cb);
2521 register_inetaddr_notifier(&netxen_inetaddr_cb);
2522 #endif
2523
2524 return pci_register_driver(&netxen_driver);
2525 }
2526
2527 module_init(netxen_init_module);
2528
2529 static void __exit netxen_exit_module(void)
2530 {
2531 pci_unregister_driver(&netxen_driver);
2532
2533 #ifdef CONFIG_INET
2534 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2535 unregister_netdevice_notifier(&netxen_netdev_cb);
2536 #endif
2537 }
2538
2539 module_exit(netxen_exit_module);
Linux with added FPC-III support