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netxen: refresh firmware info after reset
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
28 *
29 */
30
31 #include <linux/vmalloc.h>
32 #include <linux/interrupt.h>
33 #include "netxen_nic_hw.h"
34
35 #include "netxen_nic.h"
36 #include "netxen_nic_phan_reg.h"
37
38 #include <linux/dma-mapping.h>
39 #include <linux/if_vlan.h>
40 #include <net/ip.h>
41 #include <linux/ipv6.h>
42
43 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
47 char netxen_nic_driver_name[] = "netxen_nic";
48 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
49 NETXEN_NIC_LINUX_VERSIONID;
50
51 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53 /* Default to restricted 1G auto-neg mode */
54 static int wol_port_mode = 5;
55
56 static int use_msi = 1;
57
58 static int use_msi_x = 1;
59
60 /* Local functions to NetXen NIC driver */
61 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
64 static int netxen_nic_open(struct net_device *netdev);
65 static int netxen_nic_close(struct net_device *netdev);
66 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
67 static void netxen_tx_timeout(struct net_device *netdev);
68 static void netxen_tx_timeout_task(struct work_struct *work);
69 static void netxen_watchdog(unsigned long);
70 static int netxen_nic_poll(struct napi_struct *napi, int budget);
71 #ifdef CONFIG_NET_POLL_CONTROLLER
72 static void netxen_nic_poll_controller(struct net_device *netdev);
73 #endif
74 static irqreturn_t netxen_intr(int irq, void *data);
75 static irqreturn_t netxen_msi_intr(int irq, void *data);
76 static irqreturn_t netxen_msix_intr(int irq, void *data);
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 struct pci_device_id netxen_pci_tbl[] __devinitdata = {
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 struct workqueue_struct *netxen_workq;
98 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
99 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
100
101 static void netxen_watchdog(unsigned long);
102
103 static uint32_t crb_cmd_producer[4] = {
104 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
105 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
106 };
107
108 void
109 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
110 struct nx_host_tx_ring *tx_ring)
111 {
112 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
113
114 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
115 netif_stop_queue(adapter->netdev);
116 smp_mb();
117 }
118 }
119
120 static uint32_t crb_cmd_consumer[4] = {
121 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
122 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
123 };
124
125 static inline void
126 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
127 struct nx_host_tx_ring *tx_ring)
128 {
129 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
130 }
131
132 static uint32_t msi_tgt_status[8] = {
133 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
134 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
135 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
136 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
137 };
138
139 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
140
141 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
142 {
143 struct netxen_adapter *adapter = sds_ring->adapter;
144
145 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
146 }
147
148 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
149 {
150 struct netxen_adapter *adapter = sds_ring->adapter;
151
152 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
153
154 if (!NETXEN_IS_MSI_FAMILY(adapter))
155 adapter->pci_write_immediate(adapter,
156 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
157 }
158
159 static int
160 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
161 {
162 int size = sizeof(struct nx_host_sds_ring) * count;
163
164 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
165
166 return (recv_ctx->sds_rings == NULL);
167 }
168
169 static void
170 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
171 {
172 if (recv_ctx->sds_rings != NULL)
173 kfree(recv_ctx->sds_rings);
174 }
175
176 static int
177 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
178 {
179 int ring;
180 struct nx_host_sds_ring *sds_ring;
181 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
182
183 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
184 return 1;
185
186 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
187 sds_ring = &recv_ctx->sds_rings[ring];
188 netif_napi_add(netdev, &sds_ring->napi,
189 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
190 }
191
192 return 0;
193 }
194
195 static void
196 netxen_napi_enable(struct netxen_adapter *adapter)
197 {
198 int ring;
199 struct nx_host_sds_ring *sds_ring;
200 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
201
202 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
203 sds_ring = &recv_ctx->sds_rings[ring];
204 napi_enable(&sds_ring->napi);
205 netxen_nic_enable_int(sds_ring);
206 }
207 }
208
209 static void
210 netxen_napi_disable(struct netxen_adapter *adapter)
211 {
212 int ring;
213 struct nx_host_sds_ring *sds_ring;
214 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
215
216 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
217 sds_ring = &recv_ctx->sds_rings[ring];
218 netxen_nic_disable_int(sds_ring);
219 napi_synchronize(&sds_ring->napi);
220 napi_disable(&sds_ring->napi);
221 }
222 }
223
224 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
225 {
226 struct pci_dev *pdev = adapter->pdev;
227 uint64_t mask, cmask;
228
229 adapter->pci_using_dac = 0;
230
231 mask = DMA_BIT_MASK(32);
232 /*
233 * Consistent DMA mask is set to 32 bit because it cannot be set to
234 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
235 * come off this pool.
236 */
237 cmask = DMA_BIT_MASK(32);
238
239 #ifndef CONFIG_IA64
240 if (revision_id >= NX_P3_B0)
241 mask = DMA_BIT_MASK(39);
242 else if (revision_id == NX_P2_C1)
243 mask = DMA_BIT_MASK(35);
244 #endif
245 if (pci_set_dma_mask(pdev, mask) == 0 &&
246 pci_set_consistent_dma_mask(pdev, 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
256 nx_update_dma_mask(struct netxen_adapter *adapter)
257 {
258 int change, shift, err;
259 uint64_t mask, old_mask;
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 mask = (1ULL<<(32+shift)) - 1;
276
277 err = pci_set_dma_mask(pdev, mask);
278 if (err)
279 return pci_set_dma_mask(pdev, old_mask);
280 }
281
282 return 0;
283 }
284
285 static void netxen_check_options(struct netxen_adapter *adapter)
286 {
287 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
288 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
289 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
290 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
291
292 adapter->msix_supported = 0;
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
294 adapter->msix_supported = !!use_msi_x;
295 adapter->rss_supported = !!use_msi_x;
296 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
297 switch (adapter->ahw.board_type) {
298 case NETXEN_BRDTYPE_P2_SB31_10G:
299 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
300 adapter->msix_supported = !!use_msi_x;
301 adapter->rss_supported = !!use_msi_x;
302 break;
303 default:
304 break;
305 }
306 }
307
308 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
309 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
310 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
311
312 return;
313 }
314
315 static int
316 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
317 {
318 u32 val, timeout;
319
320 if (first_boot == 0x55555555) {
321 /* This is the first boot after power up */
322 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
323
324 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
325 return 0;
326
327 /* PCI bus master workaround */
328 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
329 if (!(first_boot & 0x4)) {
330 first_boot |= 0x4;
331 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
332 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
333 }
334
335 /* This is the first boot after power up */
336 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
337 if (first_boot != 0x80000f) {
338 /* clear the register for future unloads/loads */
339 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
340 return -EIO;
341 }
342
343 /* Start P2 boot loader */
344 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
345 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
346 timeout = 0;
347 do {
348 msleep(1);
349 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
350
351 if (++timeout > 5000)
352 return -EIO;
353
354 } while (val == NETXEN_BDINFO_MAGIC);
355 }
356 return 0;
357 }
358
359 static void netxen_set_port_mode(struct netxen_adapter *adapter)
360 {
361 u32 val, data;
362
363 val = adapter->ahw.board_type;
364 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
365 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
366 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
367 data = NETXEN_PORT_MODE_802_3_AP;
368 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
369 } else if (port_mode == NETXEN_PORT_MODE_XG) {
370 data = NETXEN_PORT_MODE_XG;
371 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
372 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
373 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
374 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
375 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
376 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
377 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
378 } else {
379 data = NETXEN_PORT_MODE_AUTO_NEG;
380 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
381 }
382
383 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
384 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
385 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
387 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
388 }
389 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
390 }
391 }
392
393 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
394 {
395 u32 control;
396 int pos;
397
398 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
399 if (pos) {
400 pci_read_config_dword(pdev, pos, &control);
401 if (enable)
402 control |= PCI_MSIX_FLAGS_ENABLE;
403 else
404 control = 0;
405 pci_write_config_dword(pdev, pos, control);
406 }
407 }
408
409 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
410 {
411 int i;
412
413 for (i = 0; i < count; i++)
414 adapter->msix_entries[i].entry = i;
415 }
416
417 static int
418 netxen_read_mac_addr(struct netxen_adapter *adapter)
419 {
420 int i;
421 unsigned char *p;
422 __le64 mac_addr;
423 struct net_device *netdev = adapter->netdev;
424 struct pci_dev *pdev = adapter->pdev;
425
426 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
427 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
428 return -EIO;
429 } else {
430 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
431 return -EIO;
432 }
433
434 p = (unsigned char *)&mac_addr;
435 for (i = 0; i < 6; i++)
436 netdev->dev_addr[i] = *(p + 5 - i);
437
438 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
439
440 /* set station address */
441
442 if (!is_valid_ether_addr(netdev->perm_addr))
443 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
444
445 return 0;
446 }
447
448 int netxen_nic_set_mac(struct net_device *netdev, void *p)
449 {
450 struct netxen_adapter *adapter = netdev_priv(netdev);
451 struct sockaddr *addr = p;
452
453 if (!is_valid_ether_addr(addr->sa_data))
454 return -EINVAL;
455
456 if (netif_running(netdev)) {
457 netif_device_detach(netdev);
458 netxen_napi_disable(adapter);
459 }
460
461 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
462 adapter->macaddr_set(adapter, addr->sa_data);
463
464 if (netif_running(netdev)) {
465 netif_device_attach(netdev);
466 netxen_napi_enable(adapter);
467 }
468 return 0;
469 }
470
471 static void netxen_set_multicast_list(struct net_device *dev)
472 {
473 struct netxen_adapter *adapter = netdev_priv(dev);
474
475 adapter->set_multi(dev);
476 }
477
478 static const struct net_device_ops netxen_netdev_ops = {
479 .ndo_open = netxen_nic_open,
480 .ndo_stop = netxen_nic_close,
481 .ndo_start_xmit = netxen_nic_xmit_frame,
482 .ndo_get_stats = netxen_nic_get_stats,
483 .ndo_validate_addr = eth_validate_addr,
484 .ndo_set_multicast_list = netxen_set_multicast_list,
485 .ndo_set_mac_address = netxen_nic_set_mac,
486 .ndo_change_mtu = netxen_nic_change_mtu,
487 .ndo_tx_timeout = netxen_tx_timeout,
488 #ifdef CONFIG_NET_POLL_CONTROLLER
489 .ndo_poll_controller = netxen_nic_poll_controller,
490 #endif
491 };
492
493 static void
494 netxen_setup_intr(struct netxen_adapter *adapter)
495 {
496 struct netxen_legacy_intr_set *legacy_intrp;
497 struct pci_dev *pdev = adapter->pdev;
498 int err, num_msix;
499
500 if (adapter->rss_supported) {
501 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
502 MSIX_ENTRIES_PER_ADAPTER : 2;
503 } else
504 num_msix = 1;
505
506 adapter->max_sds_rings = 1;
507
508 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
509
510 if (adapter->ahw.revision_id >= NX_P3_B0)
511 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
512 else
513 legacy_intrp = &legacy_intr[0];
514 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
515 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
516 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
517 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
518
519 netxen_set_msix_bit(pdev, 0);
520
521 if (adapter->msix_supported) {
522
523 netxen_init_msix_entries(adapter, num_msix);
524 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
525 if (err == 0) {
526 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
527 netxen_set_msix_bit(pdev, 1);
528
529 if (adapter->rss_supported)
530 adapter->max_sds_rings = num_msix;
531
532 dev_info(&pdev->dev, "using msi-x interrupts\n");
533 return;
534 }
535
536 if (err > 0)
537 pci_disable_msix(pdev);
538
539 /* fall through for msi */
540 }
541
542 if (use_msi && !pci_enable_msi(pdev)) {
543 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
544 adapter->msi_tgt_status =
545 msi_tgt_status[adapter->ahw.pci_func];
546 dev_info(&pdev->dev, "using msi interrupts\n");
547 adapter->msix_entries[0].vector = pdev->irq;
548 return;
549 }
550
551 dev_info(&pdev->dev, "using legacy interrupts\n");
552 adapter->msix_entries[0].vector = pdev->irq;
553 }
554
555 static void
556 netxen_teardown_intr(struct netxen_adapter *adapter)
557 {
558 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
559 pci_disable_msix(adapter->pdev);
560 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
561 pci_disable_msi(adapter->pdev);
562 }
563
564 static void
565 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
566 {
567 if (adapter->ahw.db_base != NULL)
568 iounmap(adapter->ahw.db_base);
569 if (adapter->ahw.pci_base0 != NULL)
570 iounmap(adapter->ahw.pci_base0);
571 if (adapter->ahw.pci_base1 != NULL)
572 iounmap(adapter->ahw.pci_base1);
573 if (adapter->ahw.pci_base2 != NULL)
574 iounmap(adapter->ahw.pci_base2);
575 }
576
577 static int
578 netxen_setup_pci_map(struct netxen_adapter *adapter)
579 {
580 void __iomem *mem_ptr0 = NULL;
581 void __iomem *mem_ptr1 = NULL;
582 void __iomem *mem_ptr2 = NULL;
583 void __iomem *db_ptr = NULL;
584
585 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
586
587 struct pci_dev *pdev = adapter->pdev;
588 int pci_func = adapter->ahw.pci_func;
589
590 int err = 0;
591
592 /*
593 * Set the CRB window to invalid. If any register in window 0 is
594 * accessed it should set the window to 0 and then reset it to 1.
595 */
596 adapter->curr_window = 255;
597 adapter->ahw.qdr_sn_window = -1;
598 adapter->ahw.ddr_mn_window = -1;
599
600 /* remap phys address */
601 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
602 mem_len = pci_resource_len(pdev, 0);
603 pci_len0 = 0;
604
605 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
606 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
607 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
608 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
609 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
610 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
611 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
612
613 /* 128 Meg of memory */
614 if (mem_len == NETXEN_PCI_128MB_SIZE) {
615 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
616 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
617 SECOND_PAGE_GROUP_SIZE);
618 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
619 THIRD_PAGE_GROUP_SIZE);
620 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
621 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
622 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
623 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
624 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
625 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
626 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
627 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
628 adapter->pci_write_immediate =
629 netxen_nic_pci_write_immediate_2M;
630 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
631 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
632 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
633
634 mem_ptr0 = pci_ioremap_bar(pdev, 0);
635 if (mem_ptr0 == NULL) {
636 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
637 return -EIO;
638 }
639 pci_len0 = mem_len;
640
641 adapter->ahw.ddr_mn_window = 0;
642 adapter->ahw.qdr_sn_window = 0;
643
644 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
645 (pci_func * 0x20);
646 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
647 if (pci_func < 4)
648 adapter->ahw.ms_win_crb += (pci_func * 0x20);
649 else
650 adapter->ahw.ms_win_crb +=
651 0xA0 + ((pci_func - 4) * 0x10);
652 } else {
653 return -EIO;
654 }
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 int
695 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
696 {
697 int val, err, first_boot;
698 struct pci_dev *pdev = adapter->pdev;
699
700 int first_driver = 0;
701
702 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
703 first_driver = (adapter->portnum == 0);
704 else
705 first_driver = (adapter->ahw.pci_func == 0);
706
707 if (!first_driver)
708 goto wait_init;
709
710 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
711
712 err = netxen_check_hw_init(adapter, first_boot);
713 if (err) {
714 dev_err(&pdev->dev, "error in init HW init sequence\n");
715 return err;
716 }
717
718 if (request_fw)
719 netxen_request_firmware(adapter);
720
721 err = netxen_need_fw_reset(adapter);
722 if (err <= 0)
723 return err;
724
725 if (first_boot != 0x55555555) {
726 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
727 netxen_pinit_from_rom(adapter, 0);
728 msleep(1);
729 }
730
731 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
732 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
733 netxen_set_port_mode(adapter);
734
735 netxen_load_firmware(adapter);
736
737 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
738
739 /* Initialize multicast addr pool owners */
740 val = 0x7654;
741 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
742 val |= 0x0f000000;
743 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
744
745 }
746
747 err = netxen_initialize_adapter_offload(adapter);
748 if (err)
749 return err;
750
751 /*
752 * Tell the hardware our version number.
753 */
754 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
755 | ((_NETXEN_NIC_LINUX_MINOR << 8))
756 | (_NETXEN_NIC_LINUX_SUBVERSION);
757 NXWR32(adapter, CRB_DRIVER_VERSION, val);
758
759 wait_init:
760 /* Handshake with the card before we register the devices. */
761 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
762 if (err) {
763 netxen_free_adapter_offload(adapter);
764 return err;
765 }
766
767 nx_update_dma_mask(adapter);
768
769 netxen_nic_get_firmware_info(adapter);
770
771 return 0;
772 }
773
774 static int
775 netxen_nic_request_irq(struct netxen_adapter *adapter)
776 {
777 irq_handler_t handler;
778 struct nx_host_sds_ring *sds_ring;
779 int err, ring;
780
781 unsigned long flags = IRQF_SAMPLE_RANDOM;
782 struct net_device *netdev = adapter->netdev;
783 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
784
785 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
786 handler = netxen_msix_intr;
787 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
788 handler = netxen_msi_intr;
789 else {
790 flags |= IRQF_SHARED;
791 handler = netxen_intr;
792 }
793 adapter->irq = netdev->irq;
794
795 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
796 sds_ring = &recv_ctx->sds_rings[ring];
797 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
798 err = request_irq(sds_ring->irq, handler,
799 flags, sds_ring->name, sds_ring);
800 if (err)
801 return err;
802 }
803
804 return 0;
805 }
806
807 static void
808 netxen_nic_free_irq(struct netxen_adapter *adapter)
809 {
810 int ring;
811 struct nx_host_sds_ring *sds_ring;
812
813 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
814
815 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
816 sds_ring = &recv_ctx->sds_rings[ring];
817 free_irq(sds_ring->irq, sds_ring);
818 }
819 }
820
821 static int
822 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
823 {
824 int err;
825
826 err = adapter->init_port(adapter, adapter->physical_port);
827 if (err) {
828 printk(KERN_ERR "%s: Failed to initialize port %d\n",
829 netxen_nic_driver_name, adapter->portnum);
830 return err;
831 }
832 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
833 adapter->macaddr_set(adapter, netdev->dev_addr);
834
835 adapter->set_multi(netdev);
836 adapter->set_mtu(adapter, netdev->mtu);
837
838 adapter->ahw.linkup = 0;
839
840 if (adapter->max_sds_rings > 1)
841 netxen_config_rss(adapter, 1);
842
843 netxen_napi_enable(adapter);
844
845 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
846 netxen_linkevent_request(adapter, 1);
847 else
848 netxen_nic_set_link_parameters(adapter);
849
850 mod_timer(&adapter->watchdog_timer, jiffies);
851
852 return 0;
853 }
854
855 static void
856 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
857 {
858 spin_lock(&adapter->tx_clean_lock);
859 netif_carrier_off(netdev);
860 netif_tx_disable(netdev);
861
862 if (adapter->stop_port)
863 adapter->stop_port(adapter);
864
865 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
866 netxen_p3_free_mac_list(adapter);
867
868 netxen_napi_disable(adapter);
869
870 netxen_release_tx_buffers(adapter);
871 spin_unlock(&adapter->tx_clean_lock);
872
873 del_timer_sync(&adapter->watchdog_timer);
874 FLUSH_SCHEDULED_WORK();
875 }
876
877
878 static int
879 netxen_nic_attach(struct netxen_adapter *adapter)
880 {
881 struct net_device *netdev = adapter->netdev;
882 struct pci_dev *pdev = adapter->pdev;
883 int err, ring;
884 struct nx_host_rds_ring *rds_ring;
885 struct nx_host_tx_ring *tx_ring;
886
887 err = netxen_init_firmware(adapter);
888 if (err != 0) {
889 printk(KERN_ERR "Failed to init firmware\n");
890 return -EIO;
891 }
892
893 if (adapter->fw_major < 4)
894 adapter->max_rds_rings = 3;
895 else
896 adapter->max_rds_rings = 2;
897
898 err = netxen_alloc_sw_resources(adapter);
899 if (err) {
900 printk(KERN_ERR "%s: Error in setting sw resources\n",
901 netdev->name);
902 return err;
903 }
904
905 netxen_nic_clear_stats(adapter);
906
907 err = netxen_alloc_hw_resources(adapter);
908 if (err) {
909 printk(KERN_ERR "%s: Error in setting hw resources\n",
910 netdev->name);
911 goto err_out_free_sw;
912 }
913
914 if (adapter->fw_major < 4) {
915 tx_ring = adapter->tx_ring;
916 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
917 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
918
919 tx_ring->producer = 0;
920 tx_ring->sw_consumer = 0;
921
922 netxen_nic_update_cmd_producer(adapter, tx_ring);
923 netxen_nic_update_cmd_consumer(adapter, tx_ring);
924 }
925
926 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
927 rds_ring = &adapter->recv_ctx.rds_rings[ring];
928 netxen_post_rx_buffers(adapter, ring, rds_ring);
929 }
930
931 err = netxen_nic_request_irq(adapter);
932 if (err) {
933 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
934 netdev->name);
935 goto err_out_free_rxbuf;
936 }
937
938 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
939 return 0;
940
941 err_out_free_rxbuf:
942 netxen_release_rx_buffers(adapter);
943 netxen_free_hw_resources(adapter);
944 err_out_free_sw:
945 netxen_free_sw_resources(adapter);
946 return err;
947 }
948
949 static void
950 netxen_nic_detach(struct netxen_adapter *adapter)
951 {
952 netxen_free_hw_resources(adapter);
953 netxen_release_rx_buffers(adapter);
954 netxen_nic_free_irq(adapter);
955 netxen_free_sw_resources(adapter);
956
957 adapter->is_up = 0;
958 }
959
960 static int __devinit
961 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
962 {
963 struct net_device *netdev = NULL;
964 struct netxen_adapter *adapter = NULL;
965 int i = 0, err;
966 int pci_func_id = PCI_FUNC(pdev->devfn);
967 uint8_t revision_id;
968
969 if (pdev->class != 0x020000) {
970 printk(KERN_DEBUG "NetXen function %d, class %x will not "
971 "be enabled.\n",pci_func_id, pdev->class);
972 return -ENODEV;
973 }
974
975 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
976 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
977 "will not be enabled.\n",
978 NX_P3_A0, NX_P3_B1);
979 return -ENODEV;
980 }
981
982 if ((err = pci_enable_device(pdev)))
983 return err;
984
985 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
986 err = -ENODEV;
987 goto err_out_disable_pdev;
988 }
989
990 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
991 goto err_out_disable_pdev;
992
993 pci_set_master(pdev);
994
995 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
996 if(!netdev) {
997 printk(KERN_ERR"%s: Failed to allocate memory for the "
998 "device block.Check system memory resource"
999 " usage.\n", netxen_nic_driver_name);
1000 goto err_out_free_res;
1001 }
1002
1003 SET_NETDEV_DEV(netdev, &pdev->dev);
1004
1005 adapter = netdev_priv(netdev);
1006 adapter->netdev = netdev;
1007 adapter->pdev = pdev;
1008 adapter->ahw.pci_func = pci_func_id;
1009
1010 revision_id = pdev->revision;
1011 adapter->ahw.revision_id = revision_id;
1012
1013 err = nx_set_dma_mask(adapter, revision_id);
1014 if (err)
1015 goto err_out_free_netdev;
1016
1017 rwlock_init(&adapter->adapter_lock);
1018 spin_lock_init(&adapter->tx_clean_lock);
1019 INIT_LIST_HEAD(&adapter->mac_list);
1020
1021 err = netxen_setup_pci_map(adapter);
1022 if (err)
1023 goto err_out_free_netdev;
1024
1025 /* This will be reset for mezz cards */
1026 adapter->portnum = pci_func_id;
1027 adapter->rx_csum = 1;
1028 adapter->mc_enabled = 0;
1029 if (NX_IS_REVISION_P3(revision_id))
1030 adapter->max_mc_count = 38;
1031 else
1032 adapter->max_mc_count = 16;
1033
1034 netdev->netdev_ops = &netxen_netdev_ops;
1035 netdev->watchdog_timeo = 2*HZ;
1036
1037 netxen_nic_change_mtu(netdev, netdev->mtu);
1038
1039 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1040
1041 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1042 netdev->features |= (NETIF_F_GRO);
1043 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1044
1045 if (NX_IS_REVISION_P3(revision_id)) {
1046 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1047 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1048 }
1049
1050 if (adapter->pci_using_dac) {
1051 netdev->features |= NETIF_F_HIGHDMA;
1052 netdev->vlan_features |= NETIF_F_HIGHDMA;
1053 }
1054
1055 if (netxen_nic_get_board_info(adapter) != 0) {
1056 printk("%s: Error getting board config info.\n",
1057 netxen_nic_driver_name);
1058 err = -EIO;
1059 goto err_out_iounmap;
1060 }
1061
1062 netxen_initialize_adapter_ops(adapter);
1063
1064 /* Mezz cards have PCI function 0,2,3 enabled */
1065 switch (adapter->ahw.board_type) {
1066 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1067 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1068 if (pci_func_id >= 2)
1069 adapter->portnum = pci_func_id - 2;
1070 break;
1071 default:
1072 break;
1073 }
1074
1075 err = netxen_start_firmware(adapter, 1);
1076 if (err)
1077 goto err_out_iounmap;
1078 /*
1079 * See if the firmware gave us a virtual-physical port mapping.
1080 */
1081 adapter->physical_port = adapter->portnum;
1082 if (adapter->fw_major < 4) {
1083 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1084 if (i != 0x55555555)
1085 adapter->physical_port = i;
1086 }
1087
1088 netxen_check_options(adapter);
1089
1090 netxen_setup_intr(adapter);
1091
1092 netdev->irq = adapter->msix_entries[0].vector;
1093
1094 if (netxen_napi_add(adapter, netdev))
1095 goto err_out_disable_msi;
1096
1097 init_timer(&adapter->watchdog_timer);
1098 adapter->watchdog_timer.function = &netxen_watchdog;
1099 adapter->watchdog_timer.data = (unsigned long)adapter;
1100 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1101 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1102
1103 err = netxen_read_mac_addr(adapter);
1104 if (err)
1105 dev_warn(&pdev->dev, "failed to read mac addr\n");
1106
1107 netif_carrier_off(netdev);
1108 netif_stop_queue(netdev);
1109
1110 if ((err = register_netdev(netdev))) {
1111 printk(KERN_ERR "%s: register_netdev failed port #%d"
1112 " aborting\n", netxen_nic_driver_name,
1113 adapter->portnum);
1114 err = -EIO;
1115 goto err_out_disable_msi;
1116 }
1117
1118 pci_set_drvdata(pdev, adapter);
1119
1120 switch (adapter->ahw.port_type) {
1121 case NETXEN_NIC_GBE:
1122 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1123 adapter->netdev->name);
1124 break;
1125 case NETXEN_NIC_XGBE:
1126 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1127 adapter->netdev->name);
1128 break;
1129 }
1130
1131 return 0;
1132
1133 err_out_disable_msi:
1134 netxen_teardown_intr(adapter);
1135
1136 netxen_free_adapter_offload(adapter);
1137
1138 err_out_iounmap:
1139 netxen_cleanup_pci_map(adapter);
1140
1141 err_out_free_netdev:
1142 free_netdev(netdev);
1143
1144 err_out_free_res:
1145 pci_release_regions(pdev);
1146
1147 err_out_disable_pdev:
1148 pci_set_drvdata(pdev, NULL);
1149 pci_disable_device(pdev);
1150 return err;
1151 }
1152
1153 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1154 {
1155 struct netxen_adapter *adapter;
1156 struct net_device *netdev;
1157
1158 adapter = pci_get_drvdata(pdev);
1159 if (adapter == NULL)
1160 return;
1161
1162 netdev = adapter->netdev;
1163
1164 unregister_netdev(netdev);
1165
1166 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1167 netxen_nic_detach(adapter);
1168 }
1169
1170 if (adapter->portnum == 0)
1171 netxen_free_adapter_offload(adapter);
1172
1173 netxen_teardown_intr(adapter);
1174 netxen_free_sds_rings(&adapter->recv_ctx);
1175
1176 netxen_cleanup_pci_map(adapter);
1177
1178 netxen_release_firmware(adapter);
1179
1180 pci_release_regions(pdev);
1181 pci_disable_device(pdev);
1182 pci_set_drvdata(pdev, NULL);
1183
1184 free_netdev(netdev);
1185 }
1186
1187 #ifdef CONFIG_PM
1188 static int
1189 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1190 {
1191
1192 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1193 struct net_device *netdev = adapter->netdev;
1194
1195 netif_device_detach(netdev);
1196
1197 if (netif_running(netdev))
1198 netxen_nic_down(adapter, netdev);
1199
1200 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1201 netxen_nic_detach(adapter);
1202
1203 pci_save_state(pdev);
1204
1205 if (netxen_nic_wol_supported(adapter)) {
1206 pci_enable_wake(pdev, PCI_D3cold, 1);
1207 pci_enable_wake(pdev, PCI_D3hot, 1);
1208 }
1209
1210 pci_disable_device(pdev);
1211 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1212
1213 return 0;
1214 }
1215
1216 static int
1217 netxen_nic_resume(struct pci_dev *pdev)
1218 {
1219 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1220 struct net_device *netdev = adapter->netdev;
1221 int err;
1222
1223 pci_set_power_state(pdev, PCI_D0);
1224 pci_restore_state(pdev);
1225
1226 err = pci_enable_device(pdev);
1227 if (err)
1228 return err;
1229
1230 adapter->curr_window = 255;
1231
1232 err = netxen_start_firmware(adapter, 0);
1233 if (err) {
1234 dev_err(&pdev->dev, "failed to start firmware\n");
1235 return err;
1236 }
1237
1238 if (netif_running(netdev)) {
1239 err = netxen_nic_attach(adapter);
1240 if (err)
1241 return err;
1242
1243 err = netxen_nic_up(adapter, netdev);
1244 if (err)
1245 return err;
1246
1247 netif_device_attach(netdev);
1248 }
1249
1250 return 0;
1251 }
1252 #endif
1253
1254 static int netxen_nic_open(struct net_device *netdev)
1255 {
1256 struct netxen_adapter *adapter = netdev_priv(netdev);
1257 int err = 0;
1258
1259 if (adapter->driver_mismatch)
1260 return -EIO;
1261
1262 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1263 err = netxen_nic_attach(adapter);
1264 if (err)
1265 return err;
1266 }
1267
1268 err = netxen_nic_up(adapter, netdev);
1269 if (err)
1270 goto err_out;
1271
1272 netif_start_queue(netdev);
1273
1274 return 0;
1275
1276 err_out:
1277 netxen_nic_detach(adapter);
1278 return err;
1279 }
1280
1281 /*
1282 * netxen_nic_close - Disables a network interface entry point
1283 */
1284 static int netxen_nic_close(struct net_device *netdev)
1285 {
1286 struct netxen_adapter *adapter = netdev_priv(netdev);
1287
1288 netxen_nic_down(adapter, netdev);
1289 return 0;
1290 }
1291
1292 static bool netxen_tso_check(struct net_device *netdev,
1293 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1294 {
1295 bool tso = false;
1296 u8 opcode = TX_ETHER_PKT;
1297 __be16 protocol = skb->protocol;
1298 u16 flags = 0;
1299
1300 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1301 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1302 protocol = vh->h_vlan_encapsulated_proto;
1303 flags = FLAGS_VLAN_TAGGED;
1304 }
1305
1306 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1307 skb_shinfo(skb)->gso_size > 0) {
1308
1309 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1310 desc->total_hdr_length =
1311 skb_transport_offset(skb) + tcp_hdrlen(skb);
1312
1313 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1314 TX_TCP_LSO6 : TX_TCP_LSO;
1315 tso = true;
1316
1317 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1318 u8 l4proto;
1319
1320 if (protocol == cpu_to_be16(ETH_P_IP)) {
1321 l4proto = ip_hdr(skb)->protocol;
1322
1323 if (l4proto == IPPROTO_TCP)
1324 opcode = TX_TCP_PKT;
1325 else if(l4proto == IPPROTO_UDP)
1326 opcode = TX_UDP_PKT;
1327 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1328 l4proto = ipv6_hdr(skb)->nexthdr;
1329
1330 if (l4proto == IPPROTO_TCP)
1331 opcode = TX_TCPV6_PKT;
1332 else if(l4proto == IPPROTO_UDP)
1333 opcode = TX_UDPV6_PKT;
1334 }
1335 }
1336 desc->tcp_hdr_offset = skb_transport_offset(skb);
1337 desc->ip_hdr_offset = skb_network_offset(skb);
1338 netxen_set_tx_flags_opcode(desc, flags, opcode);
1339 return tso;
1340 }
1341
1342 static void
1343 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1344 struct netxen_cmd_buffer *pbuf, int last)
1345 {
1346 int k;
1347 struct netxen_skb_frag *buffrag;
1348
1349 buffrag = &pbuf->frag_array[0];
1350 pci_unmap_single(pdev, buffrag->dma,
1351 buffrag->length, PCI_DMA_TODEVICE);
1352
1353 for (k = 1; k < last; k++) {
1354 buffrag = &pbuf->frag_array[k];
1355 pci_unmap_page(pdev, buffrag->dma,
1356 buffrag->length, PCI_DMA_TODEVICE);
1357 }
1358 }
1359
1360 static inline void
1361 netxen_clear_cmddesc(u64 *desc)
1362 {
1363 int i;
1364 for (i = 0; i < 8; i++)
1365 desc[i] = 0ULL;
1366 }
1367
1368 static int
1369 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1370 {
1371 struct netxen_adapter *adapter = netdev_priv(netdev);
1372 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1373 unsigned int first_seg_len = skb->len - skb->data_len;
1374 struct netxen_cmd_buffer *pbuf;
1375 struct netxen_skb_frag *buffrag;
1376 struct cmd_desc_type0 *hwdesc;
1377 struct pci_dev *pdev = adapter->pdev;
1378 dma_addr_t temp_dma;
1379 int i, k;
1380
1381 u32 producer;
1382 int frag_count, no_of_desc;
1383 u32 num_txd = tx_ring->num_desc;
1384 bool is_tso = false;
1385
1386 frag_count = skb_shinfo(skb)->nr_frags + 1;
1387
1388 /* 4 fragments per cmd des */
1389 no_of_desc = (frag_count + 3) >> 2;
1390
1391 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1392 netif_stop_queue(netdev);
1393 return NETDEV_TX_BUSY;
1394 }
1395
1396 producer = tx_ring->producer;
1397
1398 hwdesc = &tx_ring->desc_head[producer];
1399 netxen_clear_cmddesc((u64 *)hwdesc);
1400 pbuf = &tx_ring->cmd_buf_arr[producer];
1401
1402 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1403
1404 pbuf->skb = skb;
1405 pbuf->frag_count = frag_count;
1406 buffrag = &pbuf->frag_array[0];
1407 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1408 PCI_DMA_TODEVICE);
1409 if (pci_dma_mapping_error(pdev, temp_dma))
1410 goto drop_packet;
1411
1412 buffrag->dma = temp_dma;
1413 buffrag->length = first_seg_len;
1414 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1415 netxen_set_tx_port(hwdesc, adapter->portnum);
1416
1417 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1418 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1419
1420 for (i = 1, k = 1; i < frag_count; i++, k++) {
1421 struct skb_frag_struct *frag;
1422 int len, temp_len;
1423 unsigned long offset;
1424
1425 /* move to next desc. if there is a need */
1426 if ((i & 0x3) == 0) {
1427 k = 0;
1428 producer = get_next_index(producer, num_txd);
1429 hwdesc = &tx_ring->desc_head[producer];
1430 netxen_clear_cmddesc((u64 *)hwdesc);
1431 pbuf = &tx_ring->cmd_buf_arr[producer];
1432 pbuf->skb = NULL;
1433 }
1434 frag = &skb_shinfo(skb)->frags[i - 1];
1435 len = frag->size;
1436 offset = frag->page_offset;
1437
1438 temp_len = len;
1439 temp_dma = pci_map_page(pdev, frag->page, offset,
1440 len, PCI_DMA_TODEVICE);
1441 if (pci_dma_mapping_error(pdev, temp_dma)) {
1442 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1443 goto drop_packet;
1444 }
1445
1446 buffrag++;
1447 buffrag->dma = temp_dma;
1448 buffrag->length = temp_len;
1449
1450 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1451 switch (k) {
1452 case 0:
1453 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1454 break;
1455 case 1:
1456 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1457 break;
1458 case 2:
1459 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1460 break;
1461 case 3:
1462 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1463 break;
1464 }
1465 frag++;
1466 }
1467 producer = get_next_index(producer, num_txd);
1468
1469 /* For LSO, we need to copy the MAC/IP/TCP headers into
1470 * the descriptor ring
1471 */
1472 if (is_tso) {
1473 int hdr_len, first_hdr_len, more_hdr;
1474 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1475 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1476 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1477 more_hdr = 1;
1478 } else {
1479 first_hdr_len = hdr_len;
1480 more_hdr = 0;
1481 }
1482 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1483 hwdesc = &tx_ring->desc_head[producer];
1484 pbuf = &tx_ring->cmd_buf_arr[producer];
1485 pbuf->skb = NULL;
1486
1487 /* copy the first 64 bytes */
1488 memcpy(((void *)hwdesc) + 2,
1489 (void *)(skb->data), first_hdr_len);
1490 producer = get_next_index(producer, num_txd);
1491
1492 if (more_hdr) {
1493 hwdesc = &tx_ring->desc_head[producer];
1494 pbuf = &tx_ring->cmd_buf_arr[producer];
1495 pbuf->skb = NULL;
1496 /* copy the next 64 bytes - should be enough except
1497 * for pathological case
1498 */
1499 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1500 hwdesc,
1501 (hdr_len -
1502 first_hdr_len));
1503 producer = get_next_index(producer, num_txd);
1504 }
1505 }
1506
1507 tx_ring->producer = producer;
1508 adapter->stats.txbytes += skb->len;
1509
1510 netxen_nic_update_cmd_producer(adapter, tx_ring);
1511
1512 adapter->stats.xmitcalled++;
1513
1514 return NETDEV_TX_OK;
1515
1516 drop_packet:
1517 adapter->stats.txdropped++;
1518 dev_kfree_skb_any(skb);
1519 return NETDEV_TX_OK;
1520 }
1521
1522 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1523 {
1524 struct net_device *netdev = adapter->netdev;
1525 uint32_t temp, temp_state, temp_val;
1526 int rv = 0;
1527
1528 temp = NXRD32(adapter, CRB_TEMP_STATE);
1529
1530 temp_state = nx_get_temp_state(temp);
1531 temp_val = nx_get_temp_val(temp);
1532
1533 if (temp_state == NX_TEMP_PANIC) {
1534 printk(KERN_ALERT
1535 "%s: Device temperature %d degrees C exceeds"
1536 " maximum allowed. Hardware has been shut down.\n",
1537 netdev->name, temp_val);
1538
1539 netif_device_detach(netdev);
1540 netxen_nic_down(adapter, netdev);
1541 netxen_nic_detach(adapter);
1542
1543 rv = 1;
1544 } else if (temp_state == NX_TEMP_WARN) {
1545 if (adapter->temp == NX_TEMP_NORMAL) {
1546 printk(KERN_ALERT
1547 "%s: Device temperature %d degrees C "
1548 "exceeds operating range."
1549 " Immediate action needed.\n",
1550 netdev->name, temp_val);
1551 }
1552 } else {
1553 if (adapter->temp == NX_TEMP_WARN) {
1554 printk(KERN_INFO
1555 "%s: Device temperature is now %d degrees C"
1556 " in normal range.\n", netdev->name,
1557 temp_val);
1558 }
1559 }
1560 adapter->temp = temp_state;
1561 return rv;
1562 }
1563
1564 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1565 {
1566 struct net_device *netdev = adapter->netdev;
1567
1568 if (adapter->ahw.linkup && !linkup) {
1569 printk(KERN_INFO "%s: %s NIC Link is down\n",
1570 netxen_nic_driver_name, netdev->name);
1571 adapter->ahw.linkup = 0;
1572 if (netif_running(netdev)) {
1573 netif_carrier_off(netdev);
1574 netif_stop_queue(netdev);
1575 }
1576
1577 if (!adapter->has_link_events)
1578 netxen_nic_set_link_parameters(adapter);
1579
1580 } else if (!adapter->ahw.linkup && linkup) {
1581 printk(KERN_INFO "%s: %s NIC Link is up\n",
1582 netxen_nic_driver_name, netdev->name);
1583 adapter->ahw.linkup = 1;
1584 if (netif_running(netdev)) {
1585 netif_carrier_on(netdev);
1586 netif_wake_queue(netdev);
1587 }
1588
1589 if (!adapter->has_link_events)
1590 netxen_nic_set_link_parameters(adapter);
1591 }
1592 }
1593
1594 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1595 {
1596 u32 val, port, linkup;
1597
1598 port = adapter->physical_port;
1599
1600 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1601 val = NXRD32(adapter, CRB_XG_STATE_P3);
1602 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1603 linkup = (val == XG_LINK_UP_P3);
1604 } else {
1605 val = NXRD32(adapter, CRB_XG_STATE);
1606 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1607 linkup = (val >> port) & 1;
1608 else {
1609 val = (val >> port*8) & 0xff;
1610 linkup = (val == XG_LINK_UP);
1611 }
1612 }
1613
1614 netxen_advert_link_change(adapter, linkup);
1615 }
1616
1617 static void netxen_watchdog(unsigned long v)
1618 {
1619 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1620
1621 SCHEDULE_WORK(&adapter->watchdog_task);
1622 }
1623
1624 void netxen_watchdog_task(struct work_struct *work)
1625 {
1626 struct netxen_adapter *adapter =
1627 container_of(work, struct netxen_adapter, watchdog_task);
1628
1629 if (netxen_nic_check_temp(adapter))
1630 return;
1631
1632 if (!adapter->has_link_events)
1633 netxen_nic_handle_phy_intr(adapter);
1634
1635 if (netif_running(adapter->netdev))
1636 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1637 }
1638
1639 static void netxen_tx_timeout(struct net_device *netdev)
1640 {
1641 struct netxen_adapter *adapter = (struct netxen_adapter *)
1642 netdev_priv(netdev);
1643 SCHEDULE_WORK(&adapter->tx_timeout_task);
1644 }
1645
1646 static void netxen_tx_timeout_task(struct work_struct *work)
1647 {
1648 struct netxen_adapter *adapter =
1649 container_of(work, struct netxen_adapter, tx_timeout_task);
1650
1651 if (!netif_running(adapter->netdev))
1652 return;
1653
1654 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1655 netxen_nic_driver_name, adapter->netdev->name);
1656
1657 netxen_napi_disable(adapter);
1658
1659 adapter->netdev->trans_start = jiffies;
1660
1661 netxen_napi_enable(adapter);
1662 netif_wake_queue(adapter->netdev);
1663 }
1664
1665 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1666 {
1667 struct netxen_adapter *adapter = netdev_priv(netdev);
1668 struct net_device_stats *stats = &adapter->net_stats;
1669
1670 memset(stats, 0, sizeof(*stats));
1671
1672 stats->rx_packets = adapter->stats.no_rcv;
1673 stats->tx_packets = adapter->stats.xmitfinished;
1674 stats->rx_bytes = adapter->stats.rxbytes;
1675 stats->tx_bytes = adapter->stats.txbytes;
1676 stats->rx_dropped = adapter->stats.rxdropped;
1677 stats->tx_dropped = adapter->stats.txdropped;
1678
1679 return stats;
1680 }
1681
1682 static irqreturn_t netxen_intr(int irq, void *data)
1683 {
1684 struct nx_host_sds_ring *sds_ring = data;
1685 struct netxen_adapter *adapter = sds_ring->adapter;
1686 u32 status = 0;
1687
1688 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1689
1690 if (!(status & adapter->legacy_intr.int_vec_bit))
1691 return IRQ_NONE;
1692
1693 if (adapter->ahw.revision_id >= NX_P3_B1) {
1694 /* check interrupt state machine, to be sure */
1695 status = adapter->pci_read_immediate(adapter,
1696 ISR_INT_STATE_REG);
1697 if (!ISR_LEGACY_INT_TRIGGERED(status))
1698 return IRQ_NONE;
1699
1700 } else {
1701 unsigned long our_int = 0;
1702
1703 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1704
1705 /* not our interrupt */
1706 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1707 return IRQ_NONE;
1708
1709 /* claim interrupt */
1710 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1711 }
1712
1713 /* clear interrupt */
1714 if (adapter->fw_major < 4)
1715 netxen_nic_disable_int(sds_ring);
1716
1717 adapter->pci_write_immediate(adapter,
1718 adapter->legacy_intr.tgt_status_reg,
1719 0xffffffff);
1720 /* read twice to ensure write is flushed */
1721 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1722 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1723
1724 napi_schedule(&sds_ring->napi);
1725
1726 return IRQ_HANDLED;
1727 }
1728
1729 static irqreturn_t netxen_msi_intr(int irq, void *data)
1730 {
1731 struct nx_host_sds_ring *sds_ring = data;
1732 struct netxen_adapter *adapter = sds_ring->adapter;
1733
1734 /* clear interrupt */
1735 adapter->pci_write_immediate(adapter,
1736 adapter->msi_tgt_status, 0xffffffff);
1737
1738 napi_schedule(&sds_ring->napi);
1739 return IRQ_HANDLED;
1740 }
1741
1742 static irqreturn_t netxen_msix_intr(int irq, void *data)
1743 {
1744 struct nx_host_sds_ring *sds_ring = data;
1745
1746 napi_schedule(&sds_ring->napi);
1747 return IRQ_HANDLED;
1748 }
1749
1750 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1751 {
1752 struct nx_host_sds_ring *sds_ring =
1753 container_of(napi, struct nx_host_sds_ring, napi);
1754
1755 struct netxen_adapter *adapter = sds_ring->adapter;
1756
1757 int tx_complete;
1758 int work_done;
1759
1760 tx_complete = netxen_process_cmd_ring(adapter);
1761
1762 work_done = netxen_process_rcv_ring(sds_ring, budget);
1763
1764 if ((work_done < budget) && tx_complete) {
1765 napi_complete(&sds_ring->napi);
1766 if (netif_running(adapter->netdev))
1767 netxen_nic_enable_int(sds_ring);
1768 }
1769
1770 return work_done;
1771 }
1772
1773 #ifdef CONFIG_NET_POLL_CONTROLLER
1774 static void netxen_nic_poll_controller(struct net_device *netdev)
1775 {
1776 struct netxen_adapter *adapter = netdev_priv(netdev);
1777 disable_irq(adapter->irq);
1778 netxen_intr(adapter->irq, adapter);
1779 enable_irq(adapter->irq);
1780 }
1781 #endif
1782
1783 static struct pci_driver netxen_driver = {
1784 .name = netxen_nic_driver_name,
1785 .id_table = netxen_pci_tbl,
1786 .probe = netxen_nic_probe,
1787 .remove = __devexit_p(netxen_nic_remove),
1788 #ifdef CONFIG_PM
1789 .suspend = netxen_nic_suspend,
1790 .resume = netxen_nic_resume
1791 #endif
1792 };
1793
1794 /* Driver Registration on NetXen card */
1795
1796 static int __init netxen_init_module(void)
1797 {
1798 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1799
1800 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1801 return -ENOMEM;
1802
1803 return pci_register_driver(&netxen_driver);
1804 }
1805
1806 module_init(netxen_init_module);
1807
1808 static void __exit netxen_exit_module(void)
1809 {
1810 pci_unregister_driver(&netxen_driver);
1811 destroy_workqueue(netxen_workq);
1812 }
1813
1814 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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