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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...
[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, 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 (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
179 return 1;
180
181 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
182 sds_ring = &recv_ctx->sds_rings[ring];
183 netif_napi_add(netdev, &sds_ring->napi,
184 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
185 }
186
187 return 0;
188 }
189
190 static void
191 netxen_napi_enable(struct netxen_adapter *adapter)
192 {
193 int ring;
194 struct nx_host_sds_ring *sds_ring;
195 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
196
197 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
198 sds_ring = &recv_ctx->sds_rings[ring];
199 napi_enable(&sds_ring->napi);
200 netxen_nic_enable_int(sds_ring);
201 }
202 }
203
204 static void
205 netxen_napi_disable(struct netxen_adapter *adapter)
206 {
207 int ring;
208 struct nx_host_sds_ring *sds_ring;
209 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
210
211 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
212 sds_ring = &recv_ctx->sds_rings[ring];
213 napi_disable(&sds_ring->napi);
214 netxen_nic_disable_int(sds_ring);
215 synchronize_irq(sds_ring->irq);
216 }
217 }
218
219 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
220 {
221 struct pci_dev *pdev = adapter->pdev;
222 uint64_t mask, cmask;
223
224 adapter->pci_using_dac = 0;
225
226 mask = DMA_BIT_MASK(32);
227 /*
228 * Consistent DMA mask is set to 32 bit because it cannot be set to
229 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
230 * come off this pool.
231 */
232 cmask = DMA_BIT_MASK(32);
233
234 #ifndef CONFIG_IA64
235 if (revision_id >= NX_P3_B0)
236 mask = DMA_BIT_MASK(39);
237 else if (revision_id == NX_P2_C1)
238 mask = DMA_BIT_MASK(35);
239 #endif
240 if (pci_set_dma_mask(pdev, mask) == 0 &&
241 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
242 adapter->pci_using_dac = 1;
243 return 0;
244 }
245
246 return -EIO;
247 }
248
249 /* Update addressable range if firmware supports it */
250 static int
251 nx_update_dma_mask(struct netxen_adapter *adapter)
252 {
253 int change, shift, err;
254 uint64_t mask, old_mask;
255 struct pci_dev *pdev = adapter->pdev;
256
257 change = 0;
258
259 shift = NXRD32(adapter, CRB_DMA_SHIFT);
260 if (shift >= 32)
261 return 0;
262
263 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
264 change = 1;
265 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
266 change = 1;
267
268 if (change) {
269 old_mask = pdev->dma_mask;
270 mask = (1ULL<<(32+shift)) - 1;
271
272 err = pci_set_dma_mask(pdev, mask);
273 if (err)
274 return pci_set_dma_mask(pdev, old_mask);
275 }
276
277 return 0;
278 }
279
280 static void netxen_check_options(struct netxen_adapter *adapter)
281 {
282 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
283 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
284 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
285 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
286
287 adapter->msix_supported = 0;
288 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
289 adapter->msix_supported = !!use_msi_x;
290 adapter->rss_supported = !!use_msi_x;
291 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
292 switch (adapter->ahw.board_type) {
293 case NETXEN_BRDTYPE_P2_SB31_10G:
294 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
295 adapter->msix_supported = !!use_msi_x;
296 adapter->rss_supported = !!use_msi_x;
297 break;
298 default:
299 break;
300 }
301 }
302
303 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
304 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
305 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
306
307 return;
308 }
309
310 static int
311 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
312 {
313 u32 val, timeout;
314
315 if (first_boot == 0x55555555) {
316 /* This is the first boot after power up */
317 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
318
319 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
320 return 0;
321
322 /* PCI bus master workaround */
323 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
324 if (!(first_boot & 0x4)) {
325 first_boot |= 0x4;
326 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
327 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
328 }
329
330 /* This is the first boot after power up */
331 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
332 if (first_boot != 0x80000f) {
333 /* clear the register for future unloads/loads */
334 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
335 return -EIO;
336 }
337
338 /* Start P2 boot loader */
339 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
340 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
341 timeout = 0;
342 do {
343 msleep(1);
344 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
345
346 if (++timeout > 5000)
347 return -EIO;
348
349 } while (val == NETXEN_BDINFO_MAGIC);
350 }
351 return 0;
352 }
353
354 static void netxen_set_port_mode(struct netxen_adapter *adapter)
355 {
356 u32 val, data;
357
358 val = adapter->ahw.board_type;
359 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
360 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
361 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
362 data = NETXEN_PORT_MODE_802_3_AP;
363 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
364 } else if (port_mode == NETXEN_PORT_MODE_XG) {
365 data = NETXEN_PORT_MODE_XG;
366 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
367 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
368 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
370 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
371 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
373 } else {
374 data = NETXEN_PORT_MODE_AUTO_NEG;
375 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
376 }
377
378 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
379 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
380 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
381 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
382 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
383 }
384 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
385 }
386 }
387
388 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
389 {
390 u32 control;
391 int pos;
392
393 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
394 if (pos) {
395 pci_read_config_dword(pdev, pos, &control);
396 if (enable)
397 control |= PCI_MSIX_FLAGS_ENABLE;
398 else
399 control = 0;
400 pci_write_config_dword(pdev, pos, control);
401 }
402 }
403
404 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
405 {
406 int i;
407
408 for (i = 0; i < count; i++)
409 adapter->msix_entries[i].entry = i;
410 }
411
412 static int
413 netxen_read_mac_addr(struct netxen_adapter *adapter)
414 {
415 int i;
416 unsigned char *p;
417 __le64 mac_addr;
418 struct net_device *netdev = adapter->netdev;
419 struct pci_dev *pdev = adapter->pdev;
420
421 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
422 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
423 return -EIO;
424 } else {
425 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
426 return -EIO;
427 }
428
429 p = (unsigned char *)&mac_addr;
430 for (i = 0; i < 6; i++)
431 netdev->dev_addr[i] = *(p + 5 - i);
432
433 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
434
435 /* set station address */
436
437 if (!is_valid_ether_addr(netdev->perm_addr))
438 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
439
440 return 0;
441 }
442
443 int netxen_nic_set_mac(struct net_device *netdev, void *p)
444 {
445 struct netxen_adapter *adapter = netdev_priv(netdev);
446 struct sockaddr *addr = p;
447
448 if (!is_valid_ether_addr(addr->sa_data))
449 return -EINVAL;
450
451 if (netif_running(netdev)) {
452 netif_device_detach(netdev);
453 netxen_napi_disable(adapter);
454 }
455
456 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
457 adapter->macaddr_set(adapter, addr->sa_data);
458
459 if (netif_running(netdev)) {
460 netif_device_attach(netdev);
461 netxen_napi_enable(adapter);
462 }
463 return 0;
464 }
465
466 static void netxen_set_multicast_list(struct net_device *dev)
467 {
468 struct netxen_adapter *adapter = netdev_priv(dev);
469
470 adapter->set_multi(dev);
471 }
472
473 static const struct net_device_ops netxen_netdev_ops = {
474 .ndo_open = netxen_nic_open,
475 .ndo_stop = netxen_nic_close,
476 .ndo_start_xmit = netxen_nic_xmit_frame,
477 .ndo_get_stats = netxen_nic_get_stats,
478 .ndo_validate_addr = eth_validate_addr,
479 .ndo_set_multicast_list = netxen_set_multicast_list,
480 .ndo_set_mac_address = netxen_nic_set_mac,
481 .ndo_change_mtu = netxen_nic_change_mtu,
482 .ndo_tx_timeout = netxen_tx_timeout,
483 #ifdef CONFIG_NET_POLL_CONTROLLER
484 .ndo_poll_controller = netxen_nic_poll_controller,
485 #endif
486 };
487
488 static void
489 netxen_setup_intr(struct netxen_adapter *adapter)
490 {
491 struct netxen_legacy_intr_set *legacy_intrp;
492 struct pci_dev *pdev = adapter->pdev;
493 int err, num_msix;
494
495 if (adapter->rss_supported) {
496 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
497 MSIX_ENTRIES_PER_ADAPTER : 2;
498 } else
499 num_msix = 1;
500
501 adapter->max_sds_rings = 1;
502
503 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
504
505 if (adapter->ahw.revision_id >= NX_P3_B0)
506 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
507 else
508 legacy_intrp = &legacy_intr[0];
509 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
510 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
511 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
512 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
513
514 netxen_set_msix_bit(pdev, 0);
515
516 if (adapter->msix_supported) {
517
518 netxen_init_msix_entries(adapter, num_msix);
519 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
520 if (err == 0) {
521 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
522 netxen_set_msix_bit(pdev, 1);
523
524 if (adapter->rss_supported)
525 adapter->max_sds_rings = num_msix;
526
527 dev_info(&pdev->dev, "using msi-x interrupts\n");
528 return;
529 }
530
531 if (err > 0)
532 pci_disable_msix(pdev);
533
534 /* fall through for msi */
535 }
536
537 if (use_msi && !pci_enable_msi(pdev)) {
538 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
539 adapter->msi_tgt_status =
540 msi_tgt_status[adapter->ahw.pci_func];
541 dev_info(&pdev->dev, "using msi interrupts\n");
542 adapter->msix_entries[0].vector = pdev->irq;
543 return;
544 }
545
546 dev_info(&pdev->dev, "using legacy interrupts\n");
547 adapter->msix_entries[0].vector = pdev->irq;
548 }
549
550 static void
551 netxen_teardown_intr(struct netxen_adapter *adapter)
552 {
553 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
554 pci_disable_msix(adapter->pdev);
555 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
556 pci_disable_msi(adapter->pdev);
557 }
558
559 static void
560 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
561 {
562 if (adapter->ahw.db_base != NULL)
563 iounmap(adapter->ahw.db_base);
564 if (adapter->ahw.pci_base0 != NULL)
565 iounmap(adapter->ahw.pci_base0);
566 if (adapter->ahw.pci_base1 != NULL)
567 iounmap(adapter->ahw.pci_base1);
568 if (adapter->ahw.pci_base2 != NULL)
569 iounmap(adapter->ahw.pci_base2);
570 }
571
572 static int
573 netxen_setup_pci_map(struct netxen_adapter *adapter)
574 {
575 void __iomem *mem_ptr0 = NULL;
576 void __iomem *mem_ptr1 = NULL;
577 void __iomem *mem_ptr2 = NULL;
578 void __iomem *db_ptr = NULL;
579
580 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
581
582 struct pci_dev *pdev = adapter->pdev;
583 int pci_func = adapter->ahw.pci_func;
584
585 int err = 0;
586
587 /*
588 * Set the CRB window to invalid. If any register in window 0 is
589 * accessed it should set the window to 0 and then reset it to 1.
590 */
591 adapter->curr_window = 255;
592 adapter->ahw.qdr_sn_window = -1;
593 adapter->ahw.ddr_mn_window = -1;
594
595 /* remap phys address */
596 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
597 mem_len = pci_resource_len(pdev, 0);
598 pci_len0 = 0;
599
600 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
601 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
602 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
603 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
604 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
605 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
606 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
607
608 /* 128 Meg of memory */
609 if (mem_len == NETXEN_PCI_128MB_SIZE) {
610 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
611 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
612 SECOND_PAGE_GROUP_SIZE);
613 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
614 THIRD_PAGE_GROUP_SIZE);
615 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
616 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
617 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
618 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
619 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
620 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
621 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
622 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
623 adapter->pci_write_immediate =
624 netxen_nic_pci_write_immediate_2M;
625 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
626 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
627 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
628
629 mem_ptr0 = pci_ioremap_bar(pdev, 0);
630 if (mem_ptr0 == NULL) {
631 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
632 return -EIO;
633 }
634 pci_len0 = mem_len;
635
636 adapter->ahw.ddr_mn_window = 0;
637 adapter->ahw.qdr_sn_window = 0;
638
639 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
640 (pci_func * 0x20);
641 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
642 if (pci_func < 4)
643 adapter->ahw.ms_win_crb += (pci_func * 0x20);
644 else
645 adapter->ahw.ms_win_crb +=
646 0xA0 + ((pci_func - 4) * 0x10);
647 } else {
648 return -EIO;
649 }
650
651 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
652
653 adapter->ahw.pci_base0 = mem_ptr0;
654 adapter->ahw.pci_len0 = pci_len0;
655 adapter->ahw.pci_base1 = mem_ptr1;
656 adapter->ahw.pci_base2 = mem_ptr2;
657
658 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
659 goto skip_doorbell;
660
661 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
662 db_len = pci_resource_len(pdev, 4);
663
664 if (db_len == 0) {
665 printk(KERN_ERR "%s: doorbell is disabled\n",
666 netxen_nic_driver_name);
667 err = -EIO;
668 goto err_out;
669 }
670
671 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
672 if (!db_ptr) {
673 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
674 netxen_nic_driver_name);
675 err = -EIO;
676 goto err_out;
677 }
678
679 skip_doorbell:
680 adapter->ahw.db_base = db_ptr;
681 adapter->ahw.db_len = db_len;
682 return 0;
683
684 err_out:
685 netxen_cleanup_pci_map(adapter);
686 return err;
687 }
688
689 static int
690 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
691 {
692 int val, err, first_boot;
693 struct pci_dev *pdev = adapter->pdev;
694
695 int first_driver = 0;
696
697 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
698 first_driver = (adapter->portnum == 0);
699 else
700 first_driver = (adapter->ahw.pci_func == 0);
701
702 if (!first_driver)
703 return 0;
704
705 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
706
707 err = netxen_check_hw_init(adapter, first_boot);
708 if (err) {
709 dev_err(&pdev->dev, "error in init HW init sequence\n");
710 return err;
711 }
712
713 if (request_fw)
714 netxen_request_firmware(adapter);
715
716 if (first_boot != 0x55555555) {
717 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
718 netxen_pinit_from_rom(adapter, 0);
719 msleep(1);
720 }
721
722 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
723 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
724 netxen_set_port_mode(adapter);
725
726 netxen_load_firmware(adapter);
727
728 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
729
730 /* Initialize multicast addr pool owners */
731 val = 0x7654;
732 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
733 val |= 0x0f000000;
734 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
735
736 }
737
738 err = netxen_initialize_adapter_offload(adapter);
739 if (err)
740 return err;
741
742 /*
743 * Tell the hardware our version number.
744 */
745 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
746 | ((_NETXEN_NIC_LINUX_MINOR << 8))
747 | (_NETXEN_NIC_LINUX_SUBVERSION);
748 NXWR32(adapter, CRB_DRIVER_VERSION, val);
749
750 /* Handshake with the card before we register the devices. */
751 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
752 if (err) {
753 netxen_free_adapter_offload(adapter);
754 return err;
755 }
756
757 return 0;
758 }
759
760 static int
761 netxen_nic_request_irq(struct netxen_adapter *adapter)
762 {
763 irq_handler_t handler;
764 struct nx_host_sds_ring *sds_ring;
765 int err, ring;
766
767 unsigned long flags = IRQF_SAMPLE_RANDOM;
768 struct net_device *netdev = adapter->netdev;
769 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
770
771 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
772 handler = netxen_msix_intr;
773 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
774 handler = netxen_msi_intr;
775 else {
776 flags |= IRQF_SHARED;
777 handler = netxen_intr;
778 }
779 adapter->irq = netdev->irq;
780
781 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
782 sds_ring = &recv_ctx->sds_rings[ring];
783 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
784 err = request_irq(sds_ring->irq, handler,
785 flags, sds_ring->name, sds_ring);
786 if (err)
787 return err;
788 }
789
790 return 0;
791 }
792
793 static void
794 netxen_nic_free_irq(struct netxen_adapter *adapter)
795 {
796 int ring;
797 struct nx_host_sds_ring *sds_ring;
798
799 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
800
801 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
802 sds_ring = &recv_ctx->sds_rings[ring];
803 free_irq(sds_ring->irq, sds_ring);
804 }
805 }
806
807 static int
808 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
809 {
810 int err;
811
812 err = adapter->init_port(adapter, adapter->physical_port);
813 if (err) {
814 printk(KERN_ERR "%s: Failed to initialize port %d\n",
815 netxen_nic_driver_name, adapter->portnum);
816 return err;
817 }
818 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
819 adapter->macaddr_set(adapter, netdev->dev_addr);
820
821 adapter->set_multi(netdev);
822 adapter->set_mtu(adapter, netdev->mtu);
823
824 adapter->ahw.linkup = 0;
825
826 netxen_napi_enable(adapter);
827
828 if (adapter->max_sds_rings > 1)
829 netxen_config_rss(adapter, 1);
830
831 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
832 netxen_linkevent_request(adapter, 1);
833 else
834 netxen_nic_set_link_parameters(adapter);
835
836 mod_timer(&adapter->watchdog_timer, jiffies);
837
838 return 0;
839 }
840
841 static void
842 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
843 {
844 netif_carrier_off(netdev);
845 netif_stop_queue(netdev);
846
847 if (adapter->stop_port)
848 adapter->stop_port(adapter);
849
850 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
851 netxen_p3_free_mac_list(adapter);
852
853 netxen_napi_disable(adapter);
854
855 netxen_release_tx_buffers(adapter);
856
857 FLUSH_SCHEDULED_WORK();
858 del_timer_sync(&adapter->watchdog_timer);
859 }
860
861
862 static int
863 netxen_nic_attach(struct netxen_adapter *adapter)
864 {
865 struct net_device *netdev = adapter->netdev;
866 struct pci_dev *pdev = adapter->pdev;
867 int err, ring;
868 struct nx_host_rds_ring *rds_ring;
869 struct nx_host_tx_ring *tx_ring;
870
871 err = netxen_init_firmware(adapter);
872 if (err != 0) {
873 printk(KERN_ERR "Failed to init firmware\n");
874 return -EIO;
875 }
876
877 if (adapter->fw_major < 4)
878 adapter->max_rds_rings = 3;
879 else
880 adapter->max_rds_rings = 2;
881
882 err = netxen_alloc_sw_resources(adapter);
883 if (err) {
884 printk(KERN_ERR "%s: Error in setting sw resources\n",
885 netdev->name);
886 return err;
887 }
888
889 netxen_nic_clear_stats(adapter);
890
891 err = netxen_alloc_hw_resources(adapter);
892 if (err) {
893 printk(KERN_ERR "%s: Error in setting hw resources\n",
894 netdev->name);
895 goto err_out_free_sw;
896 }
897
898 if (adapter->fw_major < 4) {
899 tx_ring = adapter->tx_ring;
900 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
901 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
902
903 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
904 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
905 }
906
907 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
908 rds_ring = &adapter->recv_ctx.rds_rings[ring];
909 netxen_post_rx_buffers(adapter, ring, rds_ring);
910 }
911
912 err = netxen_nic_request_irq(adapter);
913 if (err) {
914 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
915 netdev->name);
916 goto err_out_free_rxbuf;
917 }
918
919 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
920 return 0;
921
922 err_out_free_rxbuf:
923 netxen_release_rx_buffers(adapter);
924 netxen_free_hw_resources(adapter);
925 err_out_free_sw:
926 netxen_free_sw_resources(adapter);
927 return err;
928 }
929
930 static void
931 netxen_nic_detach(struct netxen_adapter *adapter)
932 {
933 netxen_release_rx_buffers(adapter);
934 netxen_free_hw_resources(adapter);
935 netxen_nic_free_irq(adapter);
936 netxen_free_sw_resources(adapter);
937
938 adapter->is_up = 0;
939 }
940
941 static int __devinit
942 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
943 {
944 struct net_device *netdev = NULL;
945 struct netxen_adapter *adapter = NULL;
946 int i = 0, err;
947 int pci_func_id = PCI_FUNC(pdev->devfn);
948 uint8_t revision_id;
949
950 if (pdev->class != 0x020000) {
951 printk(KERN_DEBUG "NetXen function %d, class %x will not "
952 "be enabled.\n",pci_func_id, pdev->class);
953 return -ENODEV;
954 }
955
956 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
957 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
958 "will not be enabled.\n",
959 NX_P3_A0, NX_P3_B1);
960 return -ENODEV;
961 }
962
963 if ((err = pci_enable_device(pdev)))
964 return err;
965
966 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
967 err = -ENODEV;
968 goto err_out_disable_pdev;
969 }
970
971 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
972 goto err_out_disable_pdev;
973
974 pci_set_master(pdev);
975
976 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
977 if(!netdev) {
978 printk(KERN_ERR"%s: Failed to allocate memory for the "
979 "device block.Check system memory resource"
980 " usage.\n", netxen_nic_driver_name);
981 goto err_out_free_res;
982 }
983
984 SET_NETDEV_DEV(netdev, &pdev->dev);
985
986 adapter = netdev_priv(netdev);
987 adapter->netdev = netdev;
988 adapter->pdev = pdev;
989 adapter->ahw.pci_func = pci_func_id;
990
991 revision_id = pdev->revision;
992 adapter->ahw.revision_id = revision_id;
993
994 err = nx_set_dma_mask(adapter, revision_id);
995 if (err)
996 goto err_out_free_netdev;
997
998 rwlock_init(&adapter->adapter_lock);
999 spin_lock_init(&adapter->tx_clean_lock);
1000 INIT_LIST_HEAD(&adapter->mac_list);
1001
1002 err = netxen_setup_pci_map(adapter);
1003 if (err)
1004 goto err_out_free_netdev;
1005
1006 /* This will be reset for mezz cards */
1007 adapter->portnum = pci_func_id;
1008 adapter->rx_csum = 1;
1009 adapter->mc_enabled = 0;
1010 if (NX_IS_REVISION_P3(revision_id))
1011 adapter->max_mc_count = 38;
1012 else
1013 adapter->max_mc_count = 16;
1014
1015 netdev->netdev_ops = &netxen_netdev_ops;
1016 netdev->watchdog_timeo = 2*HZ;
1017
1018 netxen_nic_change_mtu(netdev, netdev->mtu);
1019
1020 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1021
1022 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1023 netdev->features |= (NETIF_F_GRO);
1024 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1025
1026 if (NX_IS_REVISION_P3(revision_id)) {
1027 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1028 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1029 }
1030
1031 if (adapter->pci_using_dac) {
1032 netdev->features |= NETIF_F_HIGHDMA;
1033 netdev->vlan_features |= NETIF_F_HIGHDMA;
1034 }
1035
1036 if (netxen_nic_get_board_info(adapter) != 0) {
1037 printk("%s: Error getting board config info.\n",
1038 netxen_nic_driver_name);
1039 err = -EIO;
1040 goto err_out_iounmap;
1041 }
1042
1043 netxen_initialize_adapter_ops(adapter);
1044
1045 /* Mezz cards have PCI function 0,2,3 enabled */
1046 switch (adapter->ahw.board_type) {
1047 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1048 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1049 if (pci_func_id >= 2)
1050 adapter->portnum = pci_func_id - 2;
1051 break;
1052 default:
1053 break;
1054 }
1055
1056 err = netxen_start_firmware(adapter, 1);
1057 if (err)
1058 goto err_out_iounmap;
1059
1060 nx_update_dma_mask(adapter);
1061
1062 netxen_nic_get_firmware_info(adapter);
1063
1064 /*
1065 * See if the firmware gave us a virtual-physical port mapping.
1066 */
1067 adapter->physical_port = adapter->portnum;
1068 if (adapter->fw_major < 4) {
1069 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1070 if (i != 0x55555555)
1071 adapter->physical_port = i;
1072 }
1073
1074 netxen_check_options(adapter);
1075
1076 netxen_setup_intr(adapter);
1077
1078 netdev->irq = adapter->msix_entries[0].vector;
1079
1080 if (netxen_napi_add(adapter, netdev))
1081 goto err_out_disable_msi;
1082
1083 init_timer(&adapter->watchdog_timer);
1084 adapter->watchdog_timer.function = &netxen_watchdog;
1085 adapter->watchdog_timer.data = (unsigned long)adapter;
1086 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1087 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1088
1089 err = netxen_read_mac_addr(adapter);
1090 if (err)
1091 dev_warn(&pdev->dev, "failed to read mac addr\n");
1092
1093 netif_carrier_off(netdev);
1094 netif_stop_queue(netdev);
1095
1096 if ((err = register_netdev(netdev))) {
1097 printk(KERN_ERR "%s: register_netdev failed port #%d"
1098 " aborting\n", netxen_nic_driver_name,
1099 adapter->portnum);
1100 err = -EIO;
1101 goto err_out_disable_msi;
1102 }
1103
1104 pci_set_drvdata(pdev, adapter);
1105
1106 switch (adapter->ahw.port_type) {
1107 case NETXEN_NIC_GBE:
1108 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1109 adapter->netdev->name);
1110 break;
1111 case NETXEN_NIC_XGBE:
1112 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1113 adapter->netdev->name);
1114 break;
1115 }
1116
1117 return 0;
1118
1119 err_out_disable_msi:
1120 netxen_teardown_intr(adapter);
1121
1122 netxen_free_adapter_offload(adapter);
1123
1124 err_out_iounmap:
1125 netxen_cleanup_pci_map(adapter);
1126
1127 err_out_free_netdev:
1128 free_netdev(netdev);
1129
1130 err_out_free_res:
1131 pci_release_regions(pdev);
1132
1133 err_out_disable_pdev:
1134 pci_set_drvdata(pdev, NULL);
1135 pci_disable_device(pdev);
1136 return err;
1137 }
1138
1139 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1140 {
1141 struct netxen_adapter *adapter;
1142 struct net_device *netdev;
1143
1144 adapter = pci_get_drvdata(pdev);
1145 if (adapter == NULL)
1146 return;
1147
1148 netdev = adapter->netdev;
1149
1150 unregister_netdev(netdev);
1151
1152 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1153 netxen_nic_detach(adapter);
1154 }
1155
1156 if (adapter->portnum == 0)
1157 netxen_free_adapter_offload(adapter);
1158
1159 netxen_teardown_intr(adapter);
1160 netxen_free_sds_rings(&adapter->recv_ctx);
1161
1162 netxen_cleanup_pci_map(adapter);
1163
1164 netxen_release_firmware(adapter);
1165
1166 pci_release_regions(pdev);
1167 pci_disable_device(pdev);
1168 pci_set_drvdata(pdev, NULL);
1169
1170 free_netdev(netdev);
1171 }
1172
1173 static int
1174 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1175 {
1176
1177 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1178 struct net_device *netdev = adapter->netdev;
1179
1180 netif_device_detach(netdev);
1181
1182 if (netif_running(netdev))
1183 netxen_nic_down(adapter, netdev);
1184
1185 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1186 netxen_nic_detach(adapter);
1187
1188 pci_save_state(pdev);
1189
1190 if (netxen_nic_wol_supported(adapter)) {
1191 pci_enable_wake(pdev, PCI_D3cold, 1);
1192 pci_enable_wake(pdev, PCI_D3hot, 1);
1193 }
1194
1195 pci_disable_device(pdev);
1196 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1197
1198 return 0;
1199 }
1200
1201 static int
1202 netxen_nic_resume(struct pci_dev *pdev)
1203 {
1204 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1205 struct net_device *netdev = adapter->netdev;
1206 int err;
1207
1208 pci_set_power_state(pdev, PCI_D0);
1209 pci_restore_state(pdev);
1210
1211 err = pci_enable_device(pdev);
1212 if (err)
1213 return err;
1214
1215 adapter->curr_window = 255;
1216
1217 err = netxen_start_firmware(adapter, 0);
1218 if (err) {
1219 dev_err(&pdev->dev, "failed to start firmware\n");
1220 return err;
1221 }
1222
1223 if (netif_running(netdev)) {
1224 err = netxen_nic_attach(adapter);
1225 if (err)
1226 return err;
1227
1228 err = netxen_nic_up(adapter, netdev);
1229 if (err)
1230 return err;
1231
1232 netif_device_attach(netdev);
1233 }
1234
1235 return 0;
1236 }
1237
1238 static int netxen_nic_open(struct net_device *netdev)
1239 {
1240 struct netxen_adapter *adapter = netdev_priv(netdev);
1241 int err = 0;
1242
1243 if (adapter->driver_mismatch)
1244 return -EIO;
1245
1246 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1247 err = netxen_nic_attach(adapter);
1248 if (err)
1249 return err;
1250 }
1251
1252 err = netxen_nic_up(adapter, netdev);
1253 if (err)
1254 goto err_out;
1255
1256 netif_start_queue(netdev);
1257
1258 return 0;
1259
1260 err_out:
1261 netxen_nic_detach(adapter);
1262 return err;
1263 }
1264
1265 /*
1266 * netxen_nic_close - Disables a network interface entry point
1267 */
1268 static int netxen_nic_close(struct net_device *netdev)
1269 {
1270 struct netxen_adapter *adapter = netdev_priv(netdev);
1271
1272 netxen_nic_down(adapter, netdev);
1273 return 0;
1274 }
1275
1276 static bool netxen_tso_check(struct net_device *netdev,
1277 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1278 {
1279 bool tso = false;
1280 u8 opcode = TX_ETHER_PKT;
1281 __be16 protocol = skb->protocol;
1282 u16 flags = 0;
1283
1284 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1285 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1286 protocol = vh->h_vlan_encapsulated_proto;
1287 flags = FLAGS_VLAN_TAGGED;
1288 }
1289
1290 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1291 skb_shinfo(skb)->gso_size > 0) {
1292
1293 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1294 desc->total_hdr_length =
1295 skb_transport_offset(skb) + tcp_hdrlen(skb);
1296
1297 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1298 TX_TCP_LSO6 : TX_TCP_LSO;
1299 tso = true;
1300
1301 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1302 u8 l4proto;
1303
1304 if (protocol == cpu_to_be16(ETH_P_IP)) {
1305 l4proto = ip_hdr(skb)->protocol;
1306
1307 if (l4proto == IPPROTO_TCP)
1308 opcode = TX_TCP_PKT;
1309 else if(l4proto == IPPROTO_UDP)
1310 opcode = TX_UDP_PKT;
1311 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1312 l4proto = ipv6_hdr(skb)->nexthdr;
1313
1314 if (l4proto == IPPROTO_TCP)
1315 opcode = TX_TCPV6_PKT;
1316 else if(l4proto == IPPROTO_UDP)
1317 opcode = TX_UDPV6_PKT;
1318 }
1319 }
1320 desc->tcp_hdr_offset = skb_transport_offset(skb);
1321 desc->ip_hdr_offset = skb_network_offset(skb);
1322 netxen_set_tx_flags_opcode(desc, flags, opcode);
1323 return tso;
1324 }
1325
1326 static void
1327 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1328 struct netxen_cmd_buffer *pbuf, int last)
1329 {
1330 int k;
1331 struct netxen_skb_frag *buffrag;
1332
1333 buffrag = &pbuf->frag_array[0];
1334 pci_unmap_single(pdev, buffrag->dma,
1335 buffrag->length, PCI_DMA_TODEVICE);
1336
1337 for (k = 1; k < last; k++) {
1338 buffrag = &pbuf->frag_array[k];
1339 pci_unmap_page(pdev, buffrag->dma,
1340 buffrag->length, PCI_DMA_TODEVICE);
1341 }
1342 }
1343
1344 static inline void
1345 netxen_clear_cmddesc(u64 *desc)
1346 {
1347 int i;
1348 for (i = 0; i < 8; i++)
1349 desc[i] = 0ULL;
1350 }
1351
1352 static int
1353 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1354 {
1355 struct netxen_adapter *adapter = netdev_priv(netdev);
1356 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1357 unsigned int first_seg_len = skb->len - skb->data_len;
1358 struct netxen_cmd_buffer *pbuf;
1359 struct netxen_skb_frag *buffrag;
1360 struct cmd_desc_type0 *hwdesc;
1361 struct pci_dev *pdev = adapter->pdev;
1362 dma_addr_t temp_dma;
1363 int i, k;
1364
1365 u32 producer, consumer;
1366 int frag_count, no_of_desc;
1367 u32 num_txd = tx_ring->num_desc;
1368 bool is_tso = false;
1369
1370 frag_count = skb_shinfo(skb)->nr_frags + 1;
1371
1372 /* 4 fragments per cmd des */
1373 no_of_desc = (frag_count + 3) >> 2;
1374
1375 producer = tx_ring->producer;
1376 smp_mb();
1377 consumer = tx_ring->sw_consumer;
1378 if ((no_of_desc+2) >= find_diff_among(producer, consumer, num_txd)) {
1379 netif_stop_queue(netdev);
1380 smp_mb();
1381 return NETDEV_TX_BUSY;
1382 }
1383
1384 hwdesc = &tx_ring->desc_head[producer];
1385 netxen_clear_cmddesc((u64 *)hwdesc);
1386 pbuf = &tx_ring->cmd_buf_arr[producer];
1387
1388 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1389
1390 pbuf->skb = skb;
1391 pbuf->frag_count = frag_count;
1392 buffrag = &pbuf->frag_array[0];
1393 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1394 PCI_DMA_TODEVICE);
1395 if (pci_dma_mapping_error(pdev, temp_dma))
1396 goto drop_packet;
1397
1398 buffrag->dma = temp_dma;
1399 buffrag->length = first_seg_len;
1400 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1401 netxen_set_tx_port(hwdesc, adapter->portnum);
1402
1403 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1404 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1405
1406 for (i = 1, k = 1; i < frag_count; i++, k++) {
1407 struct skb_frag_struct *frag;
1408 int len, temp_len;
1409 unsigned long offset;
1410
1411 /* move to next desc. if there is a need */
1412 if ((i & 0x3) == 0) {
1413 k = 0;
1414 producer = get_next_index(producer, num_txd);
1415 hwdesc = &tx_ring->desc_head[producer];
1416 netxen_clear_cmddesc((u64 *)hwdesc);
1417 pbuf = &tx_ring->cmd_buf_arr[producer];
1418 pbuf->skb = NULL;
1419 }
1420 frag = &skb_shinfo(skb)->frags[i - 1];
1421 len = frag->size;
1422 offset = frag->page_offset;
1423
1424 temp_len = len;
1425 temp_dma = pci_map_page(pdev, frag->page, offset,
1426 len, PCI_DMA_TODEVICE);
1427 if (pci_dma_mapping_error(pdev, temp_dma)) {
1428 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1429 goto drop_packet;
1430 }
1431
1432 buffrag++;
1433 buffrag->dma = temp_dma;
1434 buffrag->length = temp_len;
1435
1436 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1437 switch (k) {
1438 case 0:
1439 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1440 break;
1441 case 1:
1442 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1443 break;
1444 case 2:
1445 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1446 break;
1447 case 3:
1448 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1449 break;
1450 }
1451 frag++;
1452 }
1453 producer = get_next_index(producer, num_txd);
1454
1455 /* For LSO, we need to copy the MAC/IP/TCP headers into
1456 * the descriptor ring
1457 */
1458 if (is_tso) {
1459 int hdr_len, first_hdr_len, more_hdr;
1460 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1461 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1462 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1463 more_hdr = 1;
1464 } else {
1465 first_hdr_len = hdr_len;
1466 more_hdr = 0;
1467 }
1468 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1469 hwdesc = &tx_ring->desc_head[producer];
1470 pbuf = &tx_ring->cmd_buf_arr[producer];
1471 pbuf->skb = NULL;
1472
1473 /* copy the first 64 bytes */
1474 memcpy(((void *)hwdesc) + 2,
1475 (void *)(skb->data), first_hdr_len);
1476 producer = get_next_index(producer, num_txd);
1477
1478 if (more_hdr) {
1479 hwdesc = &tx_ring->desc_head[producer];
1480 pbuf = &tx_ring->cmd_buf_arr[producer];
1481 pbuf->skb = NULL;
1482 /* copy the next 64 bytes - should be enough except
1483 * for pathological case
1484 */
1485 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1486 hwdesc,
1487 (hdr_len -
1488 first_hdr_len));
1489 producer = get_next_index(producer, num_txd);
1490 }
1491 }
1492
1493 tx_ring->producer = producer;
1494 adapter->stats.txbytes += skb->len;
1495
1496 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
1497
1498 adapter->stats.xmitcalled++;
1499
1500 return NETDEV_TX_OK;
1501
1502 drop_packet:
1503 adapter->stats.txdropped++;
1504 dev_kfree_skb_any(skb);
1505 return NETDEV_TX_OK;
1506 }
1507
1508 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1509 {
1510 struct net_device *netdev = adapter->netdev;
1511 uint32_t temp, temp_state, temp_val;
1512 int rv = 0;
1513
1514 temp = NXRD32(adapter, CRB_TEMP_STATE);
1515
1516 temp_state = nx_get_temp_state(temp);
1517 temp_val = nx_get_temp_val(temp);
1518
1519 if (temp_state == NX_TEMP_PANIC) {
1520 printk(KERN_ALERT
1521 "%s: Device temperature %d degrees C exceeds"
1522 " maximum allowed. Hardware has been shut down.\n",
1523 netxen_nic_driver_name, temp_val);
1524
1525 netif_carrier_off(netdev);
1526 netif_stop_queue(netdev);
1527 rv = 1;
1528 } else if (temp_state == NX_TEMP_WARN) {
1529 if (adapter->temp == NX_TEMP_NORMAL) {
1530 printk(KERN_ALERT
1531 "%s: Device temperature %d degrees C "
1532 "exceeds operating range."
1533 " Immediate action needed.\n",
1534 netxen_nic_driver_name, temp_val);
1535 }
1536 } else {
1537 if (adapter->temp == NX_TEMP_WARN) {
1538 printk(KERN_INFO
1539 "%s: Device temperature is now %d degrees C"
1540 " in normal range.\n", netxen_nic_driver_name,
1541 temp_val);
1542 }
1543 }
1544 adapter->temp = temp_state;
1545 return rv;
1546 }
1547
1548 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1549 {
1550 struct net_device *netdev = adapter->netdev;
1551
1552 if (adapter->ahw.linkup && !linkup) {
1553 printk(KERN_INFO "%s: %s NIC Link is down\n",
1554 netxen_nic_driver_name, netdev->name);
1555 adapter->ahw.linkup = 0;
1556 if (netif_running(netdev)) {
1557 netif_carrier_off(netdev);
1558 netif_stop_queue(netdev);
1559 }
1560
1561 if (!adapter->has_link_events)
1562 netxen_nic_set_link_parameters(adapter);
1563
1564 } else if (!adapter->ahw.linkup && linkup) {
1565 printk(KERN_INFO "%s: %s NIC Link is up\n",
1566 netxen_nic_driver_name, netdev->name);
1567 adapter->ahw.linkup = 1;
1568 if (netif_running(netdev)) {
1569 netif_carrier_on(netdev);
1570 netif_wake_queue(netdev);
1571 }
1572
1573 if (!adapter->has_link_events)
1574 netxen_nic_set_link_parameters(adapter);
1575 }
1576 }
1577
1578 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1579 {
1580 u32 val, port, linkup;
1581
1582 port = adapter->physical_port;
1583
1584 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1585 val = NXRD32(adapter, CRB_XG_STATE_P3);
1586 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1587 linkup = (val == XG_LINK_UP_P3);
1588 } else {
1589 val = NXRD32(adapter, CRB_XG_STATE);
1590 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1591 linkup = (val >> port) & 1;
1592 else {
1593 val = (val >> port*8) & 0xff;
1594 linkup = (val == XG_LINK_UP);
1595 }
1596 }
1597
1598 netxen_advert_link_change(adapter, linkup);
1599 }
1600
1601 static void netxen_watchdog(unsigned long v)
1602 {
1603 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1604
1605 SCHEDULE_WORK(&adapter->watchdog_task);
1606 }
1607
1608 void netxen_watchdog_task(struct work_struct *work)
1609 {
1610 struct netxen_adapter *adapter =
1611 container_of(work, struct netxen_adapter, watchdog_task);
1612
1613 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1614 return;
1615
1616 if (!adapter->has_link_events)
1617 netxen_nic_handle_phy_intr(adapter);
1618
1619 if (netif_running(adapter->netdev))
1620 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1621 }
1622
1623 static void netxen_tx_timeout(struct net_device *netdev)
1624 {
1625 struct netxen_adapter *adapter = (struct netxen_adapter *)
1626 netdev_priv(netdev);
1627 SCHEDULE_WORK(&adapter->tx_timeout_task);
1628 }
1629
1630 static void netxen_tx_timeout_task(struct work_struct *work)
1631 {
1632 struct netxen_adapter *adapter =
1633 container_of(work, struct netxen_adapter, tx_timeout_task);
1634
1635 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1636 netxen_nic_driver_name, adapter->netdev->name);
1637
1638 netxen_napi_disable(adapter);
1639
1640 adapter->netdev->trans_start = jiffies;
1641
1642 netxen_napi_enable(adapter);
1643 netif_wake_queue(adapter->netdev);
1644 }
1645
1646 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1647 {
1648 struct netxen_adapter *adapter = netdev_priv(netdev);
1649 struct net_device_stats *stats = &adapter->net_stats;
1650
1651 memset(stats, 0, sizeof(*stats));
1652
1653 stats->rx_packets = adapter->stats.no_rcv;
1654 stats->tx_packets = adapter->stats.xmitfinished;
1655 stats->rx_bytes = adapter->stats.rxbytes;
1656 stats->tx_bytes = adapter->stats.txbytes;
1657 stats->rx_dropped = adapter->stats.rxdropped;
1658 stats->tx_dropped = adapter->stats.txdropped;
1659
1660 return stats;
1661 }
1662
1663 static irqreturn_t netxen_intr(int irq, void *data)
1664 {
1665 struct nx_host_sds_ring *sds_ring = data;
1666 struct netxen_adapter *adapter = sds_ring->adapter;
1667 u32 status = 0;
1668
1669 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1670
1671 if (!(status & adapter->legacy_intr.int_vec_bit))
1672 return IRQ_NONE;
1673
1674 if (adapter->ahw.revision_id >= NX_P3_B1) {
1675 /* check interrupt state machine, to be sure */
1676 status = adapter->pci_read_immediate(adapter,
1677 ISR_INT_STATE_REG);
1678 if (!ISR_LEGACY_INT_TRIGGERED(status))
1679 return IRQ_NONE;
1680
1681 } else {
1682 unsigned long our_int = 0;
1683
1684 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1685
1686 /* not our interrupt */
1687 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1688 return IRQ_NONE;
1689
1690 /* claim interrupt */
1691 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1692 }
1693
1694 /* clear interrupt */
1695 if (adapter->fw_major < 4)
1696 netxen_nic_disable_int(sds_ring);
1697
1698 adapter->pci_write_immediate(adapter,
1699 adapter->legacy_intr.tgt_status_reg,
1700 0xffffffff);
1701 /* read twice to ensure write is flushed */
1702 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1703 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1704
1705 napi_schedule(&sds_ring->napi);
1706
1707 return IRQ_HANDLED;
1708 }
1709
1710 static irqreturn_t netxen_msi_intr(int irq, void *data)
1711 {
1712 struct nx_host_sds_ring *sds_ring = data;
1713 struct netxen_adapter *adapter = sds_ring->adapter;
1714
1715 /* clear interrupt */
1716 adapter->pci_write_immediate(adapter,
1717 adapter->msi_tgt_status, 0xffffffff);
1718
1719 napi_schedule(&sds_ring->napi);
1720 return IRQ_HANDLED;
1721 }
1722
1723 static irqreturn_t netxen_msix_intr(int irq, void *data)
1724 {
1725 struct nx_host_sds_ring *sds_ring = data;
1726
1727 napi_schedule(&sds_ring->napi);
1728 return IRQ_HANDLED;
1729 }
1730
1731 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1732 {
1733 struct nx_host_sds_ring *sds_ring =
1734 container_of(napi, struct nx_host_sds_ring, napi);
1735
1736 struct netxen_adapter *adapter = sds_ring->adapter;
1737
1738 int tx_complete;
1739 int work_done;
1740
1741 tx_complete = netxen_process_cmd_ring(adapter);
1742
1743 work_done = netxen_process_rcv_ring(sds_ring, budget);
1744
1745 if ((work_done < budget) && tx_complete) {
1746 napi_complete(&sds_ring->napi);
1747 netxen_nic_enable_int(sds_ring);
1748 }
1749
1750 return work_done;
1751 }
1752
1753 #ifdef CONFIG_NET_POLL_CONTROLLER
1754 static void netxen_nic_poll_controller(struct net_device *netdev)
1755 {
1756 struct netxen_adapter *adapter = netdev_priv(netdev);
1757 disable_irq(adapter->irq);
1758 netxen_intr(adapter->irq, adapter);
1759 enable_irq(adapter->irq);
1760 }
1761 #endif
1762
1763 static struct pci_driver netxen_driver = {
1764 .name = netxen_nic_driver_name,
1765 .id_table = netxen_pci_tbl,
1766 .probe = netxen_nic_probe,
1767 .remove = __devexit_p(netxen_nic_remove),
1768 .suspend = netxen_nic_suspend,
1769 .resume = netxen_nic_resume
1770 };
1771
1772 /* Driver Registration on NetXen card */
1773
1774 static int __init netxen_init_module(void)
1775 {
1776 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1777
1778 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1779 return -ENOMEM;
1780
1781 return pci_register_driver(&netxen_driver);
1782 }
1783
1784 module_init(netxen_init_module);
1785
1786 static void __exit netxen_exit_module(void)
1787 {
1788 pci_unregister_driver(&netxen_driver);
1789 destroy_workqueue(netxen_workq);
1790 }
1791
1792 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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