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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[mirror_ubuntu-artful-kernel.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, u32 producer)
111 {
112 NXWR32(adapter, tx_ring->crb_cmd_producer, producer);
113 }
114
115 static uint32_t crb_cmd_consumer[4] = {
116 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
117 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
118 };
119
120 static inline void
121 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
122 struct nx_host_tx_ring *tx_ring, u32 consumer)
123 {
124 NXWR32(adapter, tx_ring->crb_cmd_consumer, consumer);
125 }
126
127 static uint32_t msi_tgt_status[8] = {
128 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
129 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
130 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
131 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
132 };
133
134 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
135
136 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
137 {
138 struct netxen_adapter *adapter = sds_ring->adapter;
139
140 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
141 }
142
143 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
144 {
145 struct netxen_adapter *adapter = sds_ring->adapter;
146
147 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
148
149 if (!NETXEN_IS_MSI_FAMILY(adapter))
150 adapter->pci_write_immediate(adapter,
151 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
152 }
153
154 static int
155 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
156 {
157 int size = sizeof(struct nx_host_sds_ring) * count;
158
159 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
160
161 return (recv_ctx->sds_rings == NULL);
162 }
163
164 static void
165 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
166 {
167 if (recv_ctx->sds_rings != NULL)
168 kfree(recv_ctx->sds_rings);
169 }
170
171 static int
172 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
173 {
174 int ring;
175 struct nx_host_sds_ring *sds_ring;
176 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
177
178 if ((adapter->flags & NETXEN_NIC_MSIX_ENABLED) &&
179 adapter->rss_supported)
180 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
181 else
182 adapter->max_sds_rings = 1;
183
184 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
185 return 1;
186
187 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
188 sds_ring = &recv_ctx->sds_rings[ring];
189 netif_napi_add(netdev, &sds_ring->napi,
190 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
191 }
192
193 return 0;
194 }
195
196 static void
197 netxen_napi_enable(struct netxen_adapter *adapter)
198 {
199 int ring;
200 struct nx_host_sds_ring *sds_ring;
201 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
202
203 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
204 sds_ring = &recv_ctx->sds_rings[ring];
205 napi_enable(&sds_ring->napi);
206 netxen_nic_enable_int(sds_ring);
207 }
208 }
209
210 static void
211 netxen_napi_disable(struct netxen_adapter *adapter)
212 {
213 int ring;
214 struct nx_host_sds_ring *sds_ring;
215 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
216
217 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
218 sds_ring = &recv_ctx->sds_rings[ring];
219 netxen_nic_disable_int(sds_ring);
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 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
301 adapter->msix_supported = !!use_msi_x;
302 adapter->rss_supported = !!use_msi_x;
303 break;
304 default:
305 break;
306 }
307 }
308
309 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
310 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
311 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
312
313 return;
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)
411 {
412 int i;
413
414 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; 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 else
446 adapter->macaddr_set(adapter, netdev->dev_addr);
447
448 return 0;
449 }
450
451 static void netxen_set_multicast_list(struct net_device *dev)
452 {
453 struct netxen_adapter *adapter = netdev_priv(dev);
454
455 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
456 netxen_p3_nic_set_multi(dev);
457 else
458 netxen_p2_nic_set_multi(dev);
459 }
460
461 static const struct net_device_ops netxen_netdev_ops = {
462 .ndo_open = netxen_nic_open,
463 .ndo_stop = netxen_nic_close,
464 .ndo_start_xmit = netxen_nic_xmit_frame,
465 .ndo_get_stats = netxen_nic_get_stats,
466 .ndo_validate_addr = eth_validate_addr,
467 .ndo_set_multicast_list = netxen_set_multicast_list,
468 .ndo_set_mac_address = netxen_nic_set_mac,
469 .ndo_change_mtu = netxen_nic_change_mtu,
470 .ndo_tx_timeout = netxen_tx_timeout,
471 #ifdef CONFIG_NET_POLL_CONTROLLER
472 .ndo_poll_controller = netxen_nic_poll_controller,
473 #endif
474 };
475
476 static void
477 netxen_setup_intr(struct netxen_adapter *adapter)
478 {
479 struct netxen_legacy_intr_set *legacy_intrp;
480 struct pci_dev *pdev = adapter->pdev;
481
482 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
483
484 if (adapter->ahw.revision_id >= NX_P3_B0)
485 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
486 else
487 legacy_intrp = &legacy_intr[0];
488 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
489 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
490 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
491 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
492
493 netxen_set_msix_bit(pdev, 0);
494
495 if (adapter->msix_supported) {
496
497 netxen_init_msix_entries(adapter);
498 if (pci_enable_msix(pdev, adapter->msix_entries,
499 MSIX_ENTRIES_PER_ADAPTER))
500 goto request_msi;
501
502 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
503 netxen_set_msix_bit(pdev, 1);
504 dev_info(&pdev->dev, "using msi-x interrupts\n");
505
506 } else {
507 request_msi:
508 if (use_msi && !pci_enable_msi(pdev)) {
509 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
510 dev_info(&pdev->dev, "using msi interrupts\n");
511 } else
512 dev_info(&pdev->dev, "using legacy interrupts\n");
513 adapter->msix_entries[0].vector = pdev->irq;
514 }
515 }
516
517 static void
518 netxen_teardown_intr(struct netxen_adapter *adapter)
519 {
520 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
521 pci_disable_msix(adapter->pdev);
522 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
523 pci_disable_msi(adapter->pdev);
524 }
525
526 static void
527 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
528 {
529 if (adapter->ahw.db_base != NULL)
530 iounmap(adapter->ahw.db_base);
531 if (adapter->ahw.pci_base0 != NULL)
532 iounmap(adapter->ahw.pci_base0);
533 if (adapter->ahw.pci_base1 != NULL)
534 iounmap(adapter->ahw.pci_base1);
535 if (adapter->ahw.pci_base2 != NULL)
536 iounmap(adapter->ahw.pci_base2);
537 }
538
539 static int
540 netxen_setup_pci_map(struct netxen_adapter *adapter)
541 {
542 void __iomem *mem_ptr0 = NULL;
543 void __iomem *mem_ptr1 = NULL;
544 void __iomem *mem_ptr2 = NULL;
545 void __iomem *db_ptr = NULL;
546
547 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
548
549 struct pci_dev *pdev = adapter->pdev;
550 int pci_func = adapter->ahw.pci_func;
551
552 int err = 0;
553
554 /*
555 * Set the CRB window to invalid. If any register in window 0 is
556 * accessed it should set the window to 0 and then reset it to 1.
557 */
558 adapter->curr_window = 255;
559 adapter->ahw.qdr_sn_window = -1;
560 adapter->ahw.ddr_mn_window = -1;
561
562 /* remap phys address */
563 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
564 mem_len = pci_resource_len(pdev, 0);
565 pci_len0 = 0;
566
567 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
568 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
569 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
570 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
571 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
572 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
573 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
574
575 /* 128 Meg of memory */
576 if (mem_len == NETXEN_PCI_128MB_SIZE) {
577 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
578 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
579 SECOND_PAGE_GROUP_SIZE);
580 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
581 THIRD_PAGE_GROUP_SIZE);
582 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
583 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
584 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
585 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
586 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
587 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
588 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
589 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
590 adapter->pci_write_immediate =
591 netxen_nic_pci_write_immediate_2M;
592 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
593 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
594 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
595
596 mem_ptr0 = pci_ioremap_bar(pdev, 0);
597 if (mem_ptr0 == NULL) {
598 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
599 return -EIO;
600 }
601 pci_len0 = mem_len;
602
603 adapter->ahw.ddr_mn_window = 0;
604 adapter->ahw.qdr_sn_window = 0;
605
606 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
607 (pci_func * 0x20);
608 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
609 if (pci_func < 4)
610 adapter->ahw.ms_win_crb += (pci_func * 0x20);
611 else
612 adapter->ahw.ms_win_crb +=
613 0xA0 + ((pci_func - 4) * 0x10);
614 } else {
615 return -EIO;
616 }
617
618 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
619
620 adapter->ahw.pci_base0 = mem_ptr0;
621 adapter->ahw.pci_len0 = pci_len0;
622 adapter->ahw.pci_base1 = mem_ptr1;
623 adapter->ahw.pci_base2 = mem_ptr2;
624
625 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
626 goto skip_doorbell;
627
628 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
629 db_len = pci_resource_len(pdev, 4);
630
631 if (db_len == 0) {
632 printk(KERN_ERR "%s: doorbell is disabled\n",
633 netxen_nic_driver_name);
634 err = -EIO;
635 goto err_out;
636 }
637
638 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
639 if (!db_ptr) {
640 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
641 netxen_nic_driver_name);
642 err = -EIO;
643 goto err_out;
644 }
645
646 skip_doorbell:
647 adapter->ahw.db_base = db_ptr;
648 adapter->ahw.db_len = db_len;
649 return 0;
650
651 err_out:
652 netxen_cleanup_pci_map(adapter);
653 return err;
654 }
655
656 static int
657 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
658 {
659 int val, err, first_boot;
660 struct pci_dev *pdev = adapter->pdev;
661
662 int first_driver = 0;
663
664 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
665 first_driver = (adapter->portnum == 0);
666 else
667 first_driver = (adapter->ahw.pci_func == 0);
668
669 if (!first_driver)
670 return 0;
671
672 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
673
674 err = netxen_check_hw_init(adapter, first_boot);
675 if (err) {
676 dev_err(&pdev->dev, "error in init HW init sequence\n");
677 return err;
678 }
679
680 if (request_fw)
681 netxen_request_firmware(adapter);
682
683 if (first_boot != 0x55555555) {
684 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
685 netxen_pinit_from_rom(adapter, 0);
686 msleep(1);
687 }
688
689 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
690 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
691 netxen_set_port_mode(adapter);
692
693 netxen_load_firmware(adapter);
694
695 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
696
697 /* Initialize multicast addr pool owners */
698 val = 0x7654;
699 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
700 val |= 0x0f000000;
701 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
702
703 }
704
705 err = netxen_initialize_adapter_offload(adapter);
706 if (err)
707 return err;
708
709 /*
710 * Tell the hardware our version number.
711 */
712 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
713 | ((_NETXEN_NIC_LINUX_MINOR << 8))
714 | (_NETXEN_NIC_LINUX_SUBVERSION);
715 NXWR32(adapter, CRB_DRIVER_VERSION, val);
716
717 /* Handshake with the card before we register the devices. */
718 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
719 if (err) {
720 netxen_free_adapter_offload(adapter);
721 return err;
722 }
723
724 return 0;
725 }
726
727 static int
728 netxen_nic_request_irq(struct netxen_adapter *adapter)
729 {
730 irq_handler_t handler;
731 struct nx_host_sds_ring *sds_ring;
732 int err, ring;
733
734 unsigned long flags = IRQF_SAMPLE_RANDOM;
735 struct net_device *netdev = adapter->netdev;
736 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
737
738 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
739 handler = netxen_msix_intr;
740 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
741 handler = netxen_msi_intr;
742 else {
743 flags |= IRQF_SHARED;
744 handler = netxen_intr;
745 }
746 adapter->irq = netdev->irq;
747
748 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
749 sds_ring = &recv_ctx->sds_rings[ring];
750 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
751 err = request_irq(sds_ring->irq, handler,
752 flags, sds_ring->name, sds_ring);
753 if (err)
754 return err;
755 }
756
757 return 0;
758 }
759
760 static void
761 netxen_nic_free_irq(struct netxen_adapter *adapter)
762 {
763 int ring;
764 struct nx_host_sds_ring *sds_ring;
765
766 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
767
768 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
769 sds_ring = &recv_ctx->sds_rings[ring];
770 free_irq(sds_ring->irq, sds_ring);
771 }
772 }
773
774 static int
775 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
776 {
777 int err;
778
779 err = adapter->init_port(adapter, adapter->physical_port);
780 if (err) {
781 printk(KERN_ERR "%s: Failed to initialize port %d\n",
782 netxen_nic_driver_name, adapter->portnum);
783 return err;
784 }
785 adapter->macaddr_set(adapter, netdev->dev_addr);
786
787 netxen_nic_set_link_parameters(adapter);
788
789 netxen_set_multicast_list(netdev);
790 if (adapter->set_mtu)
791 adapter->set_mtu(adapter, netdev->mtu);
792
793 adapter->ahw.linkup = 0;
794 mod_timer(&adapter->watchdog_timer, jiffies);
795
796 netxen_napi_enable(adapter);
797
798 if (adapter->max_sds_rings > 1)
799 netxen_config_rss(adapter, 1);
800
801 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
802 netxen_linkevent_request(adapter, 1);
803
804 return 0;
805 }
806
807 static void
808 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
809 {
810 netif_carrier_off(netdev);
811 netif_stop_queue(netdev);
812 netxen_napi_disable(adapter);
813
814 if (adapter->stop_port)
815 adapter->stop_port(adapter);
816
817 netxen_release_tx_buffers(adapter);
818
819 FLUSH_SCHEDULED_WORK();
820 del_timer_sync(&adapter->watchdog_timer);
821 }
822
823
824 static int
825 netxen_nic_attach(struct netxen_adapter *adapter)
826 {
827 struct net_device *netdev = adapter->netdev;
828 struct pci_dev *pdev = adapter->pdev;
829 int err, ring;
830 struct nx_host_rds_ring *rds_ring;
831 struct nx_host_tx_ring *tx_ring;
832
833 err = netxen_init_firmware(adapter);
834 if (err != 0) {
835 printk(KERN_ERR "Failed to init firmware\n");
836 return -EIO;
837 }
838
839 if (adapter->fw_major < 4)
840 adapter->max_rds_rings = 3;
841 else
842 adapter->max_rds_rings = 2;
843
844 err = netxen_alloc_sw_resources(adapter);
845 if (err) {
846 printk(KERN_ERR "%s: Error in setting sw resources\n",
847 netdev->name);
848 return err;
849 }
850
851 netxen_nic_clear_stats(adapter);
852
853 err = netxen_alloc_hw_resources(adapter);
854 if (err) {
855 printk(KERN_ERR "%s: Error in setting hw resources\n",
856 netdev->name);
857 goto err_out_free_sw;
858 }
859
860 if (adapter->fw_major < 4) {
861 tx_ring = adapter->tx_ring;
862 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
863 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
864
865 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
866 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
867 }
868
869 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
870 rds_ring = &adapter->recv_ctx.rds_rings[ring];
871 netxen_post_rx_buffers(adapter, ring, rds_ring);
872 }
873
874 err = netxen_nic_request_irq(adapter);
875 if (err) {
876 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
877 netdev->name);
878 goto err_out_free_rxbuf;
879 }
880
881 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
882 return 0;
883
884 err_out_free_rxbuf:
885 netxen_release_rx_buffers(adapter);
886 netxen_free_hw_resources(adapter);
887 err_out_free_sw:
888 netxen_free_sw_resources(adapter);
889 return err;
890 }
891
892 static void
893 netxen_nic_detach(struct netxen_adapter *adapter)
894 {
895 netxen_nic_free_irq(adapter);
896
897 netxen_release_rx_buffers(adapter);
898 netxen_free_hw_resources(adapter);
899 netxen_free_sw_resources(adapter);
900
901 adapter->is_up = 0;
902 }
903
904 static int __devinit
905 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
906 {
907 struct net_device *netdev = NULL;
908 struct netxen_adapter *adapter = NULL;
909 int i = 0, err;
910 int pci_func_id = PCI_FUNC(pdev->devfn);
911 uint8_t revision_id;
912
913 if (pdev->class != 0x020000) {
914 printk(KERN_DEBUG "NetXen function %d, class %x will not "
915 "be enabled.\n",pci_func_id, pdev->class);
916 return -ENODEV;
917 }
918
919 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
920 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
921 "will not be enabled.\n",
922 NX_P3_A0, NX_P3_B1);
923 return -ENODEV;
924 }
925
926 if ((err = pci_enable_device(pdev)))
927 return err;
928
929 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
930 err = -ENODEV;
931 goto err_out_disable_pdev;
932 }
933
934 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
935 goto err_out_disable_pdev;
936
937 pci_set_master(pdev);
938
939 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
940 if(!netdev) {
941 printk(KERN_ERR"%s: Failed to allocate memory for the "
942 "device block.Check system memory resource"
943 " usage.\n", netxen_nic_driver_name);
944 goto err_out_free_res;
945 }
946
947 SET_NETDEV_DEV(netdev, &pdev->dev);
948
949 adapter = netdev_priv(netdev);
950 adapter->netdev = netdev;
951 adapter->pdev = pdev;
952 adapter->ahw.pci_func = pci_func_id;
953
954 revision_id = pdev->revision;
955 adapter->ahw.revision_id = revision_id;
956
957 err = nx_set_dma_mask(adapter, revision_id);
958 if (err)
959 goto err_out_free_netdev;
960
961 rwlock_init(&adapter->adapter_lock);
962 spin_lock_init(&adapter->tx_clean_lock);
963
964 err = netxen_setup_pci_map(adapter);
965 if (err)
966 goto err_out_free_netdev;
967
968 /* This will be reset for mezz cards */
969 adapter->portnum = pci_func_id;
970 adapter->rx_csum = 1;
971 adapter->mc_enabled = 0;
972 if (NX_IS_REVISION_P3(revision_id))
973 adapter->max_mc_count = 38;
974 else
975 adapter->max_mc_count = 16;
976
977 netdev->netdev_ops = &netxen_netdev_ops;
978 netdev->watchdog_timeo = 2*HZ;
979
980 netxen_nic_change_mtu(netdev, netdev->mtu);
981
982 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
983
984 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
985 netdev->features |= (NETIF_F_GRO);
986 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
987
988 if (NX_IS_REVISION_P3(revision_id)) {
989 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
990 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
991 }
992
993 if (adapter->pci_using_dac) {
994 netdev->features |= NETIF_F_HIGHDMA;
995 netdev->vlan_features |= NETIF_F_HIGHDMA;
996 }
997
998 if (netxen_nic_get_board_info(adapter) != 0) {
999 printk("%s: Error getting board config info.\n",
1000 netxen_nic_driver_name);
1001 err = -EIO;
1002 goto err_out_iounmap;
1003 }
1004
1005 netxen_initialize_adapter_ops(adapter);
1006
1007 /* Mezz cards have PCI function 0,2,3 enabled */
1008 switch (adapter->ahw.board_type) {
1009 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1010 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1011 if (pci_func_id >= 2)
1012 adapter->portnum = pci_func_id - 2;
1013 break;
1014 default:
1015 break;
1016 }
1017
1018 err = netxen_start_firmware(adapter, 1);
1019 if (err)
1020 goto err_out_iounmap;
1021
1022 nx_update_dma_mask(adapter);
1023
1024 netxen_nic_get_firmware_info(adapter);
1025
1026 /*
1027 * See if the firmware gave us a virtual-physical port mapping.
1028 */
1029 adapter->physical_port = adapter->portnum;
1030 if (adapter->fw_major < 4) {
1031 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1032 if (i != 0x55555555)
1033 adapter->physical_port = i;
1034 }
1035
1036 netxen_check_options(adapter);
1037
1038 netxen_setup_intr(adapter);
1039
1040 netdev->irq = adapter->msix_entries[0].vector;
1041
1042 if (netxen_napi_add(adapter, netdev))
1043 goto err_out_disable_msi;
1044
1045 init_timer(&adapter->watchdog_timer);
1046 adapter->watchdog_timer.function = &netxen_watchdog;
1047 adapter->watchdog_timer.data = (unsigned long)adapter;
1048 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1049 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1050
1051 err = netxen_read_mac_addr(adapter);
1052 if (err)
1053 dev_warn(&pdev->dev, "failed to read mac addr\n");
1054
1055 netif_carrier_off(netdev);
1056 netif_stop_queue(netdev);
1057
1058 if ((err = register_netdev(netdev))) {
1059 printk(KERN_ERR "%s: register_netdev failed port #%d"
1060 " aborting\n", netxen_nic_driver_name,
1061 adapter->portnum);
1062 err = -EIO;
1063 goto err_out_disable_msi;
1064 }
1065
1066 pci_set_drvdata(pdev, adapter);
1067
1068 switch (adapter->ahw.port_type) {
1069 case NETXEN_NIC_GBE:
1070 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1071 adapter->netdev->name);
1072 break;
1073 case NETXEN_NIC_XGBE:
1074 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1075 adapter->netdev->name);
1076 break;
1077 }
1078
1079 return 0;
1080
1081 err_out_disable_msi:
1082 netxen_teardown_intr(adapter);
1083
1084 netxen_free_adapter_offload(adapter);
1085
1086 err_out_iounmap:
1087 netxen_cleanup_pci_map(adapter);
1088
1089 err_out_free_netdev:
1090 free_netdev(netdev);
1091
1092 err_out_free_res:
1093 pci_release_regions(pdev);
1094
1095 err_out_disable_pdev:
1096 pci_set_drvdata(pdev, NULL);
1097 pci_disable_device(pdev);
1098 return err;
1099 }
1100
1101 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1102 {
1103 struct netxen_adapter *adapter;
1104 struct net_device *netdev;
1105
1106 adapter = pci_get_drvdata(pdev);
1107 if (adapter == NULL)
1108 return;
1109
1110 netdev = adapter->netdev;
1111
1112 unregister_netdev(netdev);
1113
1114 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1115 netxen_nic_detach(adapter);
1116
1117 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1118 netxen_p3_free_mac_list(adapter);
1119 }
1120
1121 if (adapter->portnum == 0)
1122 netxen_free_adapter_offload(adapter);
1123
1124 netxen_teardown_intr(adapter);
1125 netxen_free_sds_rings(&adapter->recv_ctx);
1126
1127 netxen_cleanup_pci_map(adapter);
1128
1129 netxen_release_firmware(adapter);
1130
1131 pci_release_regions(pdev);
1132 pci_disable_device(pdev);
1133 pci_set_drvdata(pdev, NULL);
1134
1135 free_netdev(netdev);
1136 }
1137
1138 static int
1139 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1140 {
1141
1142 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1143 struct net_device *netdev = adapter->netdev;
1144
1145 netif_device_detach(netdev);
1146
1147 if (netif_running(netdev))
1148 netxen_nic_down(adapter, netdev);
1149
1150 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1151 netxen_nic_detach(adapter);
1152
1153 pci_save_state(pdev);
1154
1155 if (netxen_nic_wol_supported(adapter)) {
1156 pci_enable_wake(pdev, PCI_D3cold, 1);
1157 pci_enable_wake(pdev, PCI_D3hot, 1);
1158 }
1159
1160 pci_disable_device(pdev);
1161 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1162
1163 return 0;
1164 }
1165
1166 static int
1167 netxen_nic_resume(struct pci_dev *pdev)
1168 {
1169 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1170 struct net_device *netdev = adapter->netdev;
1171 int err;
1172
1173 pci_set_power_state(pdev, PCI_D0);
1174 pci_restore_state(pdev);
1175
1176 err = pci_enable_device(pdev);
1177 if (err)
1178 return err;
1179
1180 adapter->curr_window = 255;
1181
1182 err = netxen_start_firmware(adapter, 0);
1183 if (err) {
1184 dev_err(&pdev->dev, "failed to start firmware\n");
1185 return err;
1186 }
1187
1188 if (netif_running(netdev)) {
1189 err = netxen_nic_attach(adapter);
1190 if (err)
1191 return err;
1192
1193 err = netxen_nic_up(adapter, netdev);
1194 if (err)
1195 return err;
1196
1197 netif_device_attach(netdev);
1198 }
1199
1200 return 0;
1201 }
1202
1203 static int netxen_nic_open(struct net_device *netdev)
1204 {
1205 struct netxen_adapter *adapter = netdev_priv(netdev);
1206 int err = 0;
1207
1208 if (adapter->driver_mismatch)
1209 return -EIO;
1210
1211 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1212 err = netxen_nic_attach(adapter);
1213 if (err)
1214 return err;
1215 }
1216
1217 err = netxen_nic_up(adapter, netdev);
1218 if (err)
1219 goto err_out;
1220
1221 netif_start_queue(netdev);
1222
1223 return 0;
1224
1225 err_out:
1226 netxen_nic_detach(adapter);
1227 return err;
1228 }
1229
1230 /*
1231 * netxen_nic_close - Disables a network interface entry point
1232 */
1233 static int netxen_nic_close(struct net_device *netdev)
1234 {
1235 struct netxen_adapter *adapter = netdev_priv(netdev);
1236
1237 netxen_nic_down(adapter, netdev);
1238 return 0;
1239 }
1240
1241 static bool netxen_tso_check(struct net_device *netdev,
1242 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1243 {
1244 bool tso = false;
1245 u8 opcode = TX_ETHER_PKT;
1246 __be16 protocol = skb->protocol;
1247 u16 flags = 0;
1248
1249 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1250 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1251 protocol = vh->h_vlan_encapsulated_proto;
1252 flags = FLAGS_VLAN_TAGGED;
1253 }
1254
1255 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1256 skb_shinfo(skb)->gso_size > 0) {
1257
1258 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1259 desc->total_hdr_length =
1260 skb_transport_offset(skb) + tcp_hdrlen(skb);
1261
1262 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1263 TX_TCP_LSO6 : TX_TCP_LSO;
1264 tso = true;
1265
1266 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1267 u8 l4proto;
1268
1269 if (protocol == cpu_to_be16(ETH_P_IP)) {
1270 l4proto = ip_hdr(skb)->protocol;
1271
1272 if (l4proto == IPPROTO_TCP)
1273 opcode = TX_TCP_PKT;
1274 else if(l4proto == IPPROTO_UDP)
1275 opcode = TX_UDP_PKT;
1276 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1277 l4proto = ipv6_hdr(skb)->nexthdr;
1278
1279 if (l4proto == IPPROTO_TCP)
1280 opcode = TX_TCPV6_PKT;
1281 else if(l4proto == IPPROTO_UDP)
1282 opcode = TX_UDPV6_PKT;
1283 }
1284 }
1285 desc->tcp_hdr_offset = skb_transport_offset(skb);
1286 desc->ip_hdr_offset = skb_network_offset(skb);
1287 netxen_set_tx_flags_opcode(desc, flags, opcode);
1288 return tso;
1289 }
1290
1291 static void
1292 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1293 struct netxen_cmd_buffer *pbuf, int last)
1294 {
1295 int k;
1296 struct netxen_skb_frag *buffrag;
1297
1298 buffrag = &pbuf->frag_array[0];
1299 pci_unmap_single(pdev, buffrag->dma,
1300 buffrag->length, PCI_DMA_TODEVICE);
1301
1302 for (k = 1; k < last; k++) {
1303 buffrag = &pbuf->frag_array[k];
1304 pci_unmap_page(pdev, buffrag->dma,
1305 buffrag->length, PCI_DMA_TODEVICE);
1306 }
1307 }
1308
1309 static inline void
1310 netxen_clear_cmddesc(u64 *desc)
1311 {
1312 int i;
1313 for (i = 0; i < 8; i++)
1314 desc[i] = 0ULL;
1315 }
1316
1317 static int
1318 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1319 {
1320 struct netxen_adapter *adapter = netdev_priv(netdev);
1321 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1322 unsigned int first_seg_len = skb->len - skb->data_len;
1323 struct netxen_cmd_buffer *pbuf;
1324 struct netxen_skb_frag *buffrag;
1325 struct cmd_desc_type0 *hwdesc;
1326 struct pci_dev *pdev = adapter->pdev;
1327 dma_addr_t temp_dma;
1328 int i, k;
1329
1330 u32 producer, consumer;
1331 int frag_count, no_of_desc;
1332 u32 num_txd = tx_ring->num_desc;
1333 bool is_tso = false;
1334
1335 frag_count = skb_shinfo(skb)->nr_frags + 1;
1336
1337 /* 4 fragments per cmd des */
1338 no_of_desc = (frag_count + 3) >> 2;
1339
1340 producer = tx_ring->producer;
1341 smp_mb();
1342 consumer = tx_ring->sw_consumer;
1343 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1344 netif_stop_queue(netdev);
1345 smp_mb();
1346 return NETDEV_TX_BUSY;
1347 }
1348
1349 hwdesc = &tx_ring->desc_head[producer];
1350 netxen_clear_cmddesc((u64 *)hwdesc);
1351 pbuf = &tx_ring->cmd_buf_arr[producer];
1352
1353 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1354
1355 pbuf->skb = skb;
1356 pbuf->frag_count = frag_count;
1357 buffrag = &pbuf->frag_array[0];
1358 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1359 PCI_DMA_TODEVICE);
1360 if (pci_dma_mapping_error(pdev, temp_dma))
1361 goto drop_packet;
1362
1363 buffrag->dma = temp_dma;
1364 buffrag->length = first_seg_len;
1365 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1366 netxen_set_tx_port(hwdesc, adapter->portnum);
1367
1368 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1369 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1370
1371 for (i = 1, k = 1; i < frag_count; i++, k++) {
1372 struct skb_frag_struct *frag;
1373 int len, temp_len;
1374 unsigned long offset;
1375
1376 /* move to next desc. if there is a need */
1377 if ((i & 0x3) == 0) {
1378 k = 0;
1379 producer = get_next_index(producer, num_txd);
1380 hwdesc = &tx_ring->desc_head[producer];
1381 netxen_clear_cmddesc((u64 *)hwdesc);
1382 pbuf = &tx_ring->cmd_buf_arr[producer];
1383 pbuf->skb = NULL;
1384 }
1385 frag = &skb_shinfo(skb)->frags[i - 1];
1386 len = frag->size;
1387 offset = frag->page_offset;
1388
1389 temp_len = len;
1390 temp_dma = pci_map_page(pdev, frag->page, offset,
1391 len, PCI_DMA_TODEVICE);
1392 if (pci_dma_mapping_error(pdev, temp_dma)) {
1393 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1394 goto drop_packet;
1395 }
1396
1397 buffrag++;
1398 buffrag->dma = temp_dma;
1399 buffrag->length = temp_len;
1400
1401 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1402 switch (k) {
1403 case 0:
1404 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1405 break;
1406 case 1:
1407 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1408 break;
1409 case 2:
1410 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1411 break;
1412 case 3:
1413 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1414 break;
1415 }
1416 frag++;
1417 }
1418 producer = get_next_index(producer, num_txd);
1419
1420 /* For LSO, we need to copy the MAC/IP/TCP headers into
1421 * the descriptor ring
1422 */
1423 if (is_tso) {
1424 int hdr_len, first_hdr_len, more_hdr;
1425 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1426 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1427 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1428 more_hdr = 1;
1429 } else {
1430 first_hdr_len = hdr_len;
1431 more_hdr = 0;
1432 }
1433 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1434 hwdesc = &tx_ring->desc_head[producer];
1435 pbuf = &tx_ring->cmd_buf_arr[producer];
1436 pbuf->skb = NULL;
1437
1438 /* copy the first 64 bytes */
1439 memcpy(((void *)hwdesc) + 2,
1440 (void *)(skb->data), first_hdr_len);
1441 producer = get_next_index(producer, num_txd);
1442
1443 if (more_hdr) {
1444 hwdesc = &tx_ring->desc_head[producer];
1445 pbuf = &tx_ring->cmd_buf_arr[producer];
1446 pbuf->skb = NULL;
1447 /* copy the next 64 bytes - should be enough except
1448 * for pathological case
1449 */
1450 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1451 hwdesc,
1452 (hdr_len -
1453 first_hdr_len));
1454 producer = get_next_index(producer, num_txd);
1455 }
1456 }
1457
1458 tx_ring->producer = producer;
1459 adapter->stats.txbytes += skb->len;
1460
1461 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
1462
1463 adapter->stats.xmitcalled++;
1464 netdev->trans_start = jiffies;
1465
1466 return NETDEV_TX_OK;
1467
1468 drop_packet:
1469 adapter->stats.txdropped++;
1470 dev_kfree_skb_any(skb);
1471 return NETDEV_TX_OK;
1472 }
1473
1474 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1475 {
1476 struct net_device *netdev = adapter->netdev;
1477 uint32_t temp, temp_state, temp_val;
1478 int rv = 0;
1479
1480 temp = NXRD32(adapter, CRB_TEMP_STATE);
1481
1482 temp_state = nx_get_temp_state(temp);
1483 temp_val = nx_get_temp_val(temp);
1484
1485 if (temp_state == NX_TEMP_PANIC) {
1486 printk(KERN_ALERT
1487 "%s: Device temperature %d degrees C exceeds"
1488 " maximum allowed. Hardware has been shut down.\n",
1489 netxen_nic_driver_name, temp_val);
1490
1491 netif_carrier_off(netdev);
1492 netif_stop_queue(netdev);
1493 rv = 1;
1494 } else if (temp_state == NX_TEMP_WARN) {
1495 if (adapter->temp == NX_TEMP_NORMAL) {
1496 printk(KERN_ALERT
1497 "%s: Device temperature %d degrees C "
1498 "exceeds operating range."
1499 " Immediate action needed.\n",
1500 netxen_nic_driver_name, temp_val);
1501 }
1502 } else {
1503 if (adapter->temp == NX_TEMP_WARN) {
1504 printk(KERN_INFO
1505 "%s: Device temperature is now %d degrees C"
1506 " in normal range.\n", netxen_nic_driver_name,
1507 temp_val);
1508 }
1509 }
1510 adapter->temp = temp_state;
1511 return rv;
1512 }
1513
1514 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1515 {
1516 struct net_device *netdev = adapter->netdev;
1517
1518 if (adapter->ahw.linkup && !linkup) {
1519 printk(KERN_INFO "%s: %s NIC Link is down\n",
1520 netxen_nic_driver_name, netdev->name);
1521 adapter->ahw.linkup = 0;
1522 if (netif_running(netdev)) {
1523 netif_carrier_off(netdev);
1524 netif_stop_queue(netdev);
1525 }
1526
1527 if (!adapter->has_link_events)
1528 netxen_nic_set_link_parameters(adapter);
1529
1530 } else if (!adapter->ahw.linkup && linkup) {
1531 printk(KERN_INFO "%s: %s NIC Link is up\n",
1532 netxen_nic_driver_name, netdev->name);
1533 adapter->ahw.linkup = 1;
1534 if (netif_running(netdev)) {
1535 netif_carrier_on(netdev);
1536 netif_wake_queue(netdev);
1537 }
1538
1539 if (!adapter->has_link_events)
1540 netxen_nic_set_link_parameters(adapter);
1541 }
1542 }
1543
1544 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1545 {
1546 u32 val, port, linkup;
1547
1548 port = adapter->physical_port;
1549
1550 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1551 val = NXRD32(adapter, CRB_XG_STATE_P3);
1552 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1553 linkup = (val == XG_LINK_UP_P3);
1554 } else {
1555 val = NXRD32(adapter, CRB_XG_STATE);
1556 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1557 linkup = (val >> port) & 1;
1558 else {
1559 val = (val >> port*8) & 0xff;
1560 linkup = (val == XG_LINK_UP);
1561 }
1562 }
1563
1564 netxen_advert_link_change(adapter, linkup);
1565 }
1566
1567 static void netxen_watchdog(unsigned long v)
1568 {
1569 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1570
1571 SCHEDULE_WORK(&adapter->watchdog_task);
1572 }
1573
1574 void netxen_watchdog_task(struct work_struct *work)
1575 {
1576 struct netxen_adapter *adapter =
1577 container_of(work, struct netxen_adapter, watchdog_task);
1578
1579 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1580 return;
1581
1582 if (!adapter->has_link_events)
1583 netxen_nic_handle_phy_intr(adapter);
1584
1585 if (netif_running(adapter->netdev))
1586 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1587 }
1588
1589 static void netxen_tx_timeout(struct net_device *netdev)
1590 {
1591 struct netxen_adapter *adapter = (struct netxen_adapter *)
1592 netdev_priv(netdev);
1593 SCHEDULE_WORK(&adapter->tx_timeout_task);
1594 }
1595
1596 static void netxen_tx_timeout_task(struct work_struct *work)
1597 {
1598 struct netxen_adapter *adapter =
1599 container_of(work, struct netxen_adapter, tx_timeout_task);
1600
1601 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1602 netxen_nic_driver_name, adapter->netdev->name);
1603
1604 netxen_napi_disable(adapter);
1605
1606 adapter->netdev->trans_start = jiffies;
1607
1608 netxen_napi_enable(adapter);
1609 netif_wake_queue(adapter->netdev);
1610 }
1611
1612 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1613 {
1614 struct netxen_adapter *adapter = netdev_priv(netdev);
1615 struct net_device_stats *stats = &adapter->net_stats;
1616
1617 memset(stats, 0, sizeof(*stats));
1618
1619 stats->rx_packets = adapter->stats.no_rcv;
1620 stats->tx_packets = adapter->stats.xmitfinished;
1621 stats->rx_bytes = adapter->stats.rxbytes;
1622 stats->tx_bytes = adapter->stats.txbytes;
1623 stats->rx_dropped = adapter->stats.rxdropped;
1624 stats->tx_dropped = adapter->stats.txdropped;
1625
1626 return stats;
1627 }
1628
1629 static irqreturn_t netxen_intr(int irq, void *data)
1630 {
1631 struct nx_host_sds_ring *sds_ring = data;
1632 struct netxen_adapter *adapter = sds_ring->adapter;
1633 u32 status = 0;
1634
1635 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1636
1637 if (!(status & adapter->legacy_intr.int_vec_bit))
1638 return IRQ_NONE;
1639
1640 if (adapter->ahw.revision_id >= NX_P3_B1) {
1641 /* check interrupt state machine, to be sure */
1642 status = adapter->pci_read_immediate(adapter,
1643 ISR_INT_STATE_REG);
1644 if (!ISR_LEGACY_INT_TRIGGERED(status))
1645 return IRQ_NONE;
1646
1647 } else {
1648 unsigned long our_int = 0;
1649
1650 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1651
1652 /* not our interrupt */
1653 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1654 return IRQ_NONE;
1655
1656 /* claim interrupt */
1657 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1658 }
1659
1660 /* clear interrupt */
1661 if (adapter->fw_major < 4)
1662 netxen_nic_disable_int(sds_ring);
1663
1664 adapter->pci_write_immediate(adapter,
1665 adapter->legacy_intr.tgt_status_reg,
1666 0xffffffff);
1667 /* read twice to ensure write is flushed */
1668 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1669 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1670
1671 napi_schedule(&sds_ring->napi);
1672
1673 return IRQ_HANDLED;
1674 }
1675
1676 static irqreturn_t netxen_msi_intr(int irq, void *data)
1677 {
1678 struct nx_host_sds_ring *sds_ring = data;
1679 struct netxen_adapter *adapter = sds_ring->adapter;
1680
1681 /* clear interrupt */
1682 adapter->pci_write_immediate(adapter,
1683 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1684
1685 napi_schedule(&sds_ring->napi);
1686 return IRQ_HANDLED;
1687 }
1688
1689 static irqreturn_t netxen_msix_intr(int irq, void *data)
1690 {
1691 struct nx_host_sds_ring *sds_ring = data;
1692
1693 napi_schedule(&sds_ring->napi);
1694 return IRQ_HANDLED;
1695 }
1696
1697 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1698 {
1699 struct nx_host_sds_ring *sds_ring =
1700 container_of(napi, struct nx_host_sds_ring, napi);
1701
1702 struct netxen_adapter *adapter = sds_ring->adapter;
1703
1704 int tx_complete;
1705 int work_done;
1706
1707 tx_complete = netxen_process_cmd_ring(adapter);
1708
1709 work_done = netxen_process_rcv_ring(sds_ring, budget);
1710
1711 if ((work_done < budget) && tx_complete) {
1712 napi_complete(&sds_ring->napi);
1713 netxen_nic_enable_int(sds_ring);
1714 }
1715
1716 return work_done;
1717 }
1718
1719 #ifdef CONFIG_NET_POLL_CONTROLLER
1720 static void netxen_nic_poll_controller(struct net_device *netdev)
1721 {
1722 struct netxen_adapter *adapter = netdev_priv(netdev);
1723 disable_irq(adapter->irq);
1724 netxen_intr(adapter->irq, adapter);
1725 enable_irq(adapter->irq);
1726 }
1727 #endif
1728
1729 static struct pci_driver netxen_driver = {
1730 .name = netxen_nic_driver_name,
1731 .id_table = netxen_pci_tbl,
1732 .probe = netxen_nic_probe,
1733 .remove = __devexit_p(netxen_nic_remove),
1734 .suspend = netxen_nic_suspend,
1735 .resume = netxen_nic_resume
1736 };
1737
1738 /* Driver Registration on NetXen card */
1739
1740 static int __init netxen_init_module(void)
1741 {
1742 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1743
1744 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1745 return -ENOMEM;
1746
1747 return pci_register_driver(&netxen_driver);
1748 }
1749
1750 module_init(netxen_init_module);
1751
1752 static void __exit netxen_exit_module(void)
1753 {
1754 pci_unregister_driver(&netxen_driver);
1755 destroy_workqueue(netxen_workq);
1756 }
1757
1758 module_exit(netxen_exit_module);
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