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netxen: refactor tso code
[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 #include <linux/inetdevice.h>
43
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
47
48 char netxen_nic_driver_name[] = "netxen_nic";
49 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID;
51
52 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
53
54 /* Default to restricted 1G auto-neg mode */
55 static int wol_port_mode = 5;
56
57 static int use_msi = 1;
58
59 static int use_msi_x = 1;
60
61 /* Local functions to NetXen NIC driver */
62 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
63 const struct pci_device_id *ent);
64 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
65 static int netxen_nic_open(struct net_device *netdev);
66 static int netxen_nic_close(struct net_device *netdev);
67 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
68 static void netxen_tx_timeout(struct net_device *netdev);
69 static void netxen_tx_timeout_task(struct work_struct *work);
70 static void netxen_watchdog(unsigned long);
71 static int netxen_nic_poll(struct napi_struct *napi, int budget);
72 #ifdef CONFIG_NET_POLL_CONTROLLER
73 static void netxen_nic_poll_controller(struct net_device *netdev);
74 #endif
75 static irqreturn_t netxen_intr(int irq, void *data);
76 static irqreturn_t netxen_msi_intr(int irq, void *data);
77 static irqreturn_t netxen_msix_intr(int irq, void *data);
78
79 /* PCI Device ID Table */
80 #define ENTRY(device) \
81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83
84 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
92 ENTRY(PCI_DEVICE_ID_NX3031),
93 {0,}
94 };
95
96 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
97
98 static struct workqueue_struct *netxen_workq;
99 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
100 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
101
102 static void netxen_watchdog(unsigned long);
103
104 static uint32_t crb_cmd_producer[4] = {
105 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
106 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
107 };
108
109 void
110 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
111 struct nx_host_tx_ring *tx_ring)
112 {
113 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
114
115 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
116 netif_stop_queue(adapter->netdev);
117 smp_mb();
118 }
119 }
120
121 static uint32_t crb_cmd_consumer[4] = {
122 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
123 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
124 };
125
126 static inline void
127 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
128 struct nx_host_tx_ring *tx_ring)
129 {
130 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
131 }
132
133 static uint32_t msi_tgt_status[8] = {
134 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
135 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
136 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
137 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
138 };
139
140 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
141
142 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
143 {
144 struct netxen_adapter *adapter = sds_ring->adapter;
145
146 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
147 }
148
149 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
150 {
151 struct netxen_adapter *adapter = sds_ring->adapter;
152
153 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
154
155 if (!NETXEN_IS_MSI_FAMILY(adapter))
156 adapter->pci_write_immediate(adapter,
157 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
158 }
159
160 static int
161 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
162 {
163 int size = sizeof(struct nx_host_sds_ring) * count;
164
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
166
167 return (recv_ctx->sds_rings == NULL);
168 }
169
170 static void
171 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
172 {
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
175 }
176
177 static int
178 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
179 {
180 int ring;
181 struct nx_host_sds_ring *sds_ring;
182 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
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_synchronize(&sds_ring->napi);
221 napi_disable(&sds_ring->napi);
222 }
223 }
224
225 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
226 {
227 struct pci_dev *pdev = adapter->pdev;
228 uint64_t mask, cmask;
229
230 adapter->pci_using_dac = 0;
231
232 mask = DMA_BIT_MASK(32);
233 /*
234 * Consistent DMA mask is set to 32 bit because it cannot be set to
235 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
236 * come off this pool.
237 */
238 cmask = DMA_BIT_MASK(32);
239
240 #ifndef CONFIG_IA64
241 if (revision_id >= NX_P3_B0)
242 mask = DMA_BIT_MASK(39);
243 else if (revision_id == NX_P2_C1)
244 mask = DMA_BIT_MASK(35);
245 #endif
246 if (pci_set_dma_mask(pdev, mask) == 0 &&
247 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
248 adapter->pci_using_dac = 1;
249 return 0;
250 }
251
252 return -EIO;
253 }
254
255 /* Update addressable range if firmware supports it */
256 static int
257 nx_update_dma_mask(struct netxen_adapter *adapter)
258 {
259 int change, shift, err;
260 uint64_t mask, old_mask;
261 struct pci_dev *pdev = adapter->pdev;
262
263 change = 0;
264
265 shift = NXRD32(adapter, CRB_DMA_SHIFT);
266 if (shift >= 32)
267 return 0;
268
269 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
270 change = 1;
271 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
272 change = 1;
273
274 if (change) {
275 old_mask = pdev->dma_mask;
276 mask = (1ULL<<(32+shift)) - 1;
277
278 err = pci_set_dma_mask(pdev, mask);
279 if (err)
280 return pci_set_dma_mask(pdev, old_mask);
281 }
282
283 return 0;
284 }
285
286 static void netxen_check_options(struct netxen_adapter *adapter)
287 {
288 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
289 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
290 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
291 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
292
293 adapter->msix_supported = 0;
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
295 adapter->msix_supported = !!use_msi_x;
296 adapter->rss_supported = !!use_msi_x;
297 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
298 switch (adapter->ahw.board_type) {
299 case NETXEN_BRDTYPE_P2_SB31_10G:
300 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
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, int count)
411 {
412 int i;
413
414 for (i = 0; i < count; i++)
415 adapter->msix_entries[i].entry = i;
416 }
417
418 static int
419 netxen_read_mac_addr(struct netxen_adapter *adapter)
420 {
421 int i;
422 unsigned char *p;
423 __le64 mac_addr;
424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
426
427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
429 return -EIO;
430 } else {
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
432 return -EIO;
433 }
434
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
438
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
440
441 /* set station address */
442
443 if (!is_valid_ether_addr(netdev->perm_addr))
444 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
445
446 return 0;
447 }
448
449 int netxen_nic_set_mac(struct net_device *netdev, void *p)
450 {
451 struct netxen_adapter *adapter = netdev_priv(netdev);
452 struct sockaddr *addr = p;
453
454 if (!is_valid_ether_addr(addr->sa_data))
455 return -EINVAL;
456
457 if (netif_running(netdev)) {
458 netif_device_detach(netdev);
459 netxen_napi_disable(adapter);
460 }
461
462 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
463 adapter->macaddr_set(adapter, addr->sa_data);
464
465 if (netif_running(netdev)) {
466 netif_device_attach(netdev);
467 netxen_napi_enable(adapter);
468 }
469 return 0;
470 }
471
472 static void netxen_set_multicast_list(struct net_device *dev)
473 {
474 struct netxen_adapter *adapter = netdev_priv(dev);
475
476 adapter->set_multi(dev);
477 }
478
479 static const struct net_device_ops netxen_netdev_ops = {
480 .ndo_open = netxen_nic_open,
481 .ndo_stop = netxen_nic_close,
482 .ndo_start_xmit = netxen_nic_xmit_frame,
483 .ndo_get_stats = netxen_nic_get_stats,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_multicast_list = netxen_set_multicast_list,
486 .ndo_set_mac_address = netxen_nic_set_mac,
487 .ndo_change_mtu = netxen_nic_change_mtu,
488 .ndo_tx_timeout = netxen_tx_timeout,
489 #ifdef CONFIG_NET_POLL_CONTROLLER
490 .ndo_poll_controller = netxen_nic_poll_controller,
491 #endif
492 };
493
494 static void
495 netxen_setup_intr(struct netxen_adapter *adapter)
496 {
497 struct netxen_legacy_intr_set *legacy_intrp;
498 struct pci_dev *pdev = adapter->pdev;
499 int err, num_msix;
500
501 if (adapter->rss_supported) {
502 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
503 MSIX_ENTRIES_PER_ADAPTER : 2;
504 } else
505 num_msix = 1;
506
507 adapter->max_sds_rings = 1;
508
509 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
510
511 if (adapter->ahw.revision_id >= NX_P3_B0)
512 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
513 else
514 legacy_intrp = &legacy_intr[0];
515 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
516 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
517 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
518 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
519
520 netxen_set_msix_bit(pdev, 0);
521
522 if (adapter->msix_supported) {
523
524 netxen_init_msix_entries(adapter, num_msix);
525 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
526 if (err == 0) {
527 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
528 netxen_set_msix_bit(pdev, 1);
529
530 if (adapter->rss_supported)
531 adapter->max_sds_rings = num_msix;
532
533 dev_info(&pdev->dev, "using msi-x interrupts\n");
534 return;
535 }
536
537 if (err > 0)
538 pci_disable_msix(pdev);
539
540 /* fall through for msi */
541 }
542
543 if (use_msi && !pci_enable_msi(pdev)) {
544 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
545 adapter->msi_tgt_status =
546 msi_tgt_status[adapter->ahw.pci_func];
547 dev_info(&pdev->dev, "using msi interrupts\n");
548 adapter->msix_entries[0].vector = pdev->irq;
549 return;
550 }
551
552 dev_info(&pdev->dev, "using legacy interrupts\n");
553 adapter->msix_entries[0].vector = pdev->irq;
554 }
555
556 static void
557 netxen_teardown_intr(struct netxen_adapter *adapter)
558 {
559 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
560 pci_disable_msix(adapter->pdev);
561 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
562 pci_disable_msi(adapter->pdev);
563 }
564
565 static void
566 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
567 {
568 if (adapter->ahw.db_base != NULL)
569 iounmap(adapter->ahw.db_base);
570 if (adapter->ahw.pci_base0 != NULL)
571 iounmap(adapter->ahw.pci_base0);
572 if (adapter->ahw.pci_base1 != NULL)
573 iounmap(adapter->ahw.pci_base1);
574 if (adapter->ahw.pci_base2 != NULL)
575 iounmap(adapter->ahw.pci_base2);
576 }
577
578 static int
579 netxen_setup_pci_map(struct netxen_adapter *adapter)
580 {
581 void __iomem *mem_ptr0 = NULL;
582 void __iomem *mem_ptr1 = NULL;
583 void __iomem *mem_ptr2 = NULL;
584 void __iomem *db_ptr = NULL;
585
586 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
587
588 struct pci_dev *pdev = adapter->pdev;
589 int pci_func = adapter->ahw.pci_func;
590
591 int err = 0;
592
593 /*
594 * Set the CRB window to invalid. If any register in window 0 is
595 * accessed it should set the window to 0 and then reset it to 1.
596 */
597 adapter->curr_window = 255;
598 adapter->ahw.qdr_sn_window = -1;
599 adapter->ahw.ddr_mn_window = -1;
600
601 /* remap phys address */
602 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
603 mem_len = pci_resource_len(pdev, 0);
604 pci_len0 = 0;
605
606 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
607 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
608 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
609 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
610 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
611 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
612 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
613
614 /* 128 Meg of memory */
615 if (mem_len == NETXEN_PCI_128MB_SIZE) {
616 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
617 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
618 SECOND_PAGE_GROUP_SIZE);
619 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
620 THIRD_PAGE_GROUP_SIZE);
621 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
622 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
623 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
624 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
625 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
626 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
627 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
628 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
629 adapter->pci_write_immediate =
630 netxen_nic_pci_write_immediate_2M;
631 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
632 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
633 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
634
635 mem_ptr0 = pci_ioremap_bar(pdev, 0);
636 if (mem_ptr0 == NULL) {
637 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
638 return -EIO;
639 }
640 pci_len0 = mem_len;
641
642 adapter->ahw.ddr_mn_window = 0;
643 adapter->ahw.qdr_sn_window = 0;
644
645 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
646 (pci_func * 0x20);
647 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
648 if (pci_func < 4)
649 adapter->ahw.ms_win_crb += (pci_func * 0x20);
650 else
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func - 4) * 0x10);
653 } else {
654 return -EIO;
655 }
656
657 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
658
659 adapter->ahw.pci_base0 = mem_ptr0;
660 adapter->ahw.pci_len0 = pci_len0;
661 adapter->ahw.pci_base1 = mem_ptr1;
662 adapter->ahw.pci_base2 = mem_ptr2;
663
664 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
665 goto skip_doorbell;
666
667 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
668 db_len = pci_resource_len(pdev, 4);
669
670 if (db_len == 0) {
671 printk(KERN_ERR "%s: doorbell is disabled\n",
672 netxen_nic_driver_name);
673 err = -EIO;
674 goto err_out;
675 }
676
677 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
678 if (!db_ptr) {
679 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
680 netxen_nic_driver_name);
681 err = -EIO;
682 goto err_out;
683 }
684
685 skip_doorbell:
686 adapter->ahw.db_base = db_ptr;
687 adapter->ahw.db_len = db_len;
688 return 0;
689
690 err_out:
691 netxen_cleanup_pci_map(adapter);
692 return err;
693 }
694
695 static int
696 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
697 {
698 int val, err, first_boot;
699 struct pci_dev *pdev = adapter->pdev;
700
701 int first_driver = 0;
702
703 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
704 first_driver = (adapter->portnum == 0);
705 else
706 first_driver = (adapter->ahw.pci_func == 0);
707
708 if (!first_driver)
709 goto wait_init;
710
711 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
712
713 err = netxen_check_hw_init(adapter, first_boot);
714 if (err) {
715 dev_err(&pdev->dev, "error in init HW init sequence\n");
716 return err;
717 }
718
719 if (request_fw)
720 netxen_request_firmware(adapter);
721
722 err = netxen_need_fw_reset(adapter);
723 if (err <= 0)
724 return err;
725
726 if (first_boot != 0x55555555) {
727 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
728 netxen_pinit_from_rom(adapter, 0);
729 msleep(1);
730 }
731
732 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
733 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
734 netxen_set_port_mode(adapter);
735
736 netxen_load_firmware(adapter);
737
738 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
739
740 /* Initialize multicast addr pool owners */
741 val = 0x7654;
742 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
743 val |= 0x0f000000;
744 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
745
746 }
747
748 err = netxen_init_dummy_dma(adapter);
749 if (err)
750 return err;
751
752 /*
753 * Tell the hardware our version number.
754 */
755 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
756 | ((_NETXEN_NIC_LINUX_MINOR << 8))
757 | (_NETXEN_NIC_LINUX_SUBVERSION);
758 NXWR32(adapter, CRB_DRIVER_VERSION, val);
759
760 wait_init:
761 /* Handshake with the card before we register the devices. */
762 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
763 if (err) {
764 netxen_free_dummy_dma(adapter);
765 return err;
766 }
767
768 nx_update_dma_mask(adapter);
769
770 netxen_nic_get_firmware_info(adapter);
771
772 return 0;
773 }
774
775 static int
776 netxen_nic_request_irq(struct netxen_adapter *adapter)
777 {
778 irq_handler_t handler;
779 struct nx_host_sds_ring *sds_ring;
780 int err, ring;
781
782 unsigned long flags = IRQF_SAMPLE_RANDOM;
783 struct net_device *netdev = adapter->netdev;
784 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
785
786 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
787 handler = netxen_msix_intr;
788 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
789 handler = netxen_msi_intr;
790 else {
791 flags |= IRQF_SHARED;
792 handler = netxen_intr;
793 }
794 adapter->irq = netdev->irq;
795
796 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
797 sds_ring = &recv_ctx->sds_rings[ring];
798 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
799 err = request_irq(sds_ring->irq, handler,
800 flags, sds_ring->name, sds_ring);
801 if (err)
802 return err;
803 }
804
805 return 0;
806 }
807
808 static void
809 netxen_nic_free_irq(struct netxen_adapter *adapter)
810 {
811 int ring;
812 struct nx_host_sds_ring *sds_ring;
813
814 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
815
816 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
817 sds_ring = &recv_ctx->sds_rings[ring];
818 free_irq(sds_ring->irq, sds_ring);
819 }
820 }
821
822 static void
823 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
824 {
825 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
826 adapter->coal.normal.data.rx_time_us =
827 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
828 adapter->coal.normal.data.rx_packets =
829 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
830 adapter->coal.normal.data.tx_time_us =
831 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
832 adapter->coal.normal.data.tx_packets =
833 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
834 }
835
836 static int
837 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
838 {
839 int err;
840
841 err = adapter->init_port(adapter, adapter->physical_port);
842 if (err) {
843 printk(KERN_ERR "%s: Failed to initialize port %d\n",
844 netxen_nic_driver_name, adapter->portnum);
845 return err;
846 }
847 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
848 adapter->macaddr_set(adapter, netdev->dev_addr);
849
850 adapter->set_multi(netdev);
851 adapter->set_mtu(adapter, netdev->mtu);
852
853 adapter->ahw.linkup = 0;
854
855 if (adapter->max_sds_rings > 1)
856 netxen_config_rss(adapter, 1);
857
858 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
859 netxen_config_intr_coalesce(adapter);
860
861 netxen_napi_enable(adapter);
862
863 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
864 netxen_linkevent_request(adapter, 1);
865 else
866 netxen_nic_set_link_parameters(adapter);
867
868 mod_timer(&adapter->watchdog_timer, jiffies);
869
870 return 0;
871 }
872
873 static void
874 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
875 {
876 spin_lock(&adapter->tx_clean_lock);
877 netif_carrier_off(netdev);
878 netif_tx_disable(netdev);
879
880 if (adapter->stop_port)
881 adapter->stop_port(adapter);
882
883 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
884 netxen_p3_free_mac_list(adapter);
885
886 netxen_napi_disable(adapter);
887
888 netxen_release_tx_buffers(adapter);
889 spin_unlock(&adapter->tx_clean_lock);
890
891 del_timer_sync(&adapter->watchdog_timer);
892 FLUSH_SCHEDULED_WORK();
893 }
894
895
896 static int
897 netxen_nic_attach(struct netxen_adapter *adapter)
898 {
899 struct net_device *netdev = adapter->netdev;
900 struct pci_dev *pdev = adapter->pdev;
901 int err, ring;
902 struct nx_host_rds_ring *rds_ring;
903 struct nx_host_tx_ring *tx_ring;
904
905 err = netxen_init_firmware(adapter);
906 if (err != 0) {
907 printk(KERN_ERR "Failed to init firmware\n");
908 return -EIO;
909 }
910
911 if (adapter->fw_major < 4)
912 adapter->max_rds_rings = 3;
913 else
914 adapter->max_rds_rings = 2;
915
916 err = netxen_alloc_sw_resources(adapter);
917 if (err) {
918 printk(KERN_ERR "%s: Error in setting sw resources\n",
919 netdev->name);
920 return err;
921 }
922
923 netxen_nic_clear_stats(adapter);
924
925 err = netxen_alloc_hw_resources(adapter);
926 if (err) {
927 printk(KERN_ERR "%s: Error in setting hw resources\n",
928 netdev->name);
929 goto err_out_free_sw;
930 }
931
932 if (adapter->fw_major < 4) {
933 tx_ring = adapter->tx_ring;
934 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
935 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
936
937 tx_ring->producer = 0;
938 tx_ring->sw_consumer = 0;
939
940 netxen_nic_update_cmd_producer(adapter, tx_ring);
941 netxen_nic_update_cmd_consumer(adapter, tx_ring);
942 }
943
944 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
945 rds_ring = &adapter->recv_ctx.rds_rings[ring];
946 netxen_post_rx_buffers(adapter, ring, rds_ring);
947 }
948
949 err = netxen_nic_request_irq(adapter);
950 if (err) {
951 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
952 netdev->name);
953 goto err_out_free_rxbuf;
954 }
955
956 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
957 netxen_nic_init_coalesce_defaults(adapter);
958
959 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
960 return 0;
961
962 err_out_free_rxbuf:
963 netxen_release_rx_buffers(adapter);
964 netxen_free_hw_resources(adapter);
965 err_out_free_sw:
966 netxen_free_sw_resources(adapter);
967 return err;
968 }
969
970 static void
971 netxen_nic_detach(struct netxen_adapter *adapter)
972 {
973 netxen_free_hw_resources(adapter);
974 netxen_release_rx_buffers(adapter);
975 netxen_nic_free_irq(adapter);
976 netxen_free_sw_resources(adapter);
977
978 adapter->is_up = 0;
979 }
980
981 static int __devinit
982 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
983 {
984 struct net_device *netdev = NULL;
985 struct netxen_adapter *adapter = NULL;
986 int i = 0, err;
987 int pci_func_id = PCI_FUNC(pdev->devfn);
988 uint8_t revision_id;
989
990 if (pdev->class != 0x020000) {
991 printk(KERN_DEBUG "NetXen function %d, class %x will not "
992 "be enabled.\n",pci_func_id, pdev->class);
993 return -ENODEV;
994 }
995
996 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
997 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
998 "will not be enabled.\n",
999 NX_P3_A0, NX_P3_B1);
1000 return -ENODEV;
1001 }
1002
1003 if ((err = pci_enable_device(pdev)))
1004 return err;
1005
1006 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1007 err = -ENODEV;
1008 goto err_out_disable_pdev;
1009 }
1010
1011 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1012 goto err_out_disable_pdev;
1013
1014 pci_set_master(pdev);
1015
1016 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1017 if(!netdev) {
1018 printk(KERN_ERR"%s: Failed to allocate memory for the "
1019 "device block.Check system memory resource"
1020 " usage.\n", netxen_nic_driver_name);
1021 goto err_out_free_res;
1022 }
1023
1024 SET_NETDEV_DEV(netdev, &pdev->dev);
1025
1026 adapter = netdev_priv(netdev);
1027 adapter->netdev = netdev;
1028 adapter->pdev = pdev;
1029 adapter->ahw.pci_func = pci_func_id;
1030
1031 revision_id = pdev->revision;
1032 adapter->ahw.revision_id = revision_id;
1033
1034 err = nx_set_dma_mask(adapter, revision_id);
1035 if (err)
1036 goto err_out_free_netdev;
1037
1038 rwlock_init(&adapter->adapter_lock);
1039 spin_lock_init(&adapter->tx_clean_lock);
1040 INIT_LIST_HEAD(&adapter->mac_list);
1041
1042 err = netxen_setup_pci_map(adapter);
1043 if (err)
1044 goto err_out_free_netdev;
1045
1046 /* This will be reset for mezz cards */
1047 adapter->portnum = pci_func_id;
1048 adapter->rx_csum = 1;
1049 adapter->mc_enabled = 0;
1050 if (NX_IS_REVISION_P3(revision_id))
1051 adapter->max_mc_count = 38;
1052 else
1053 adapter->max_mc_count = 16;
1054
1055 netdev->netdev_ops = &netxen_netdev_ops;
1056 netdev->watchdog_timeo = 2*HZ;
1057
1058 netxen_nic_change_mtu(netdev, netdev->mtu);
1059
1060 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1061
1062 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1063 netdev->features |= (NETIF_F_GRO);
1064 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1065
1066 if (NX_IS_REVISION_P3(revision_id)) {
1067 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1068 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1069 }
1070
1071 if (adapter->pci_using_dac) {
1072 netdev->features |= NETIF_F_HIGHDMA;
1073 netdev->vlan_features |= NETIF_F_HIGHDMA;
1074 }
1075
1076 if (netxen_nic_get_board_info(adapter) != 0) {
1077 printk("%s: Error getting board config info.\n",
1078 netxen_nic_driver_name);
1079 err = -EIO;
1080 goto err_out_iounmap;
1081 }
1082
1083 netxen_initialize_adapter_ops(adapter);
1084
1085 /* Mezz cards have PCI function 0,2,3 enabled */
1086 switch (adapter->ahw.board_type) {
1087 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1088 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1089 if (pci_func_id >= 2)
1090 adapter->portnum = pci_func_id - 2;
1091 break;
1092 default:
1093 break;
1094 }
1095
1096 err = netxen_start_firmware(adapter, 1);
1097 if (err)
1098 goto err_out_iounmap;
1099 /*
1100 * See if the firmware gave us a virtual-physical port mapping.
1101 */
1102 adapter->physical_port = adapter->portnum;
1103 if (adapter->fw_major < 4) {
1104 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1105 if (i != 0x55555555)
1106 adapter->physical_port = i;
1107 }
1108
1109 netxen_check_options(adapter);
1110
1111 netxen_setup_intr(adapter);
1112
1113 netdev->irq = adapter->msix_entries[0].vector;
1114
1115 if (netxen_napi_add(adapter, netdev))
1116 goto err_out_disable_msi;
1117
1118 init_timer(&adapter->watchdog_timer);
1119 adapter->watchdog_timer.function = &netxen_watchdog;
1120 adapter->watchdog_timer.data = (unsigned long)adapter;
1121 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1122 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1123
1124 err = netxen_read_mac_addr(adapter);
1125 if (err)
1126 dev_warn(&pdev->dev, "failed to read mac addr\n");
1127
1128 netif_carrier_off(netdev);
1129 netif_stop_queue(netdev);
1130
1131 if ((err = register_netdev(netdev))) {
1132 printk(KERN_ERR "%s: register_netdev failed port #%d"
1133 " aborting\n", netxen_nic_driver_name,
1134 adapter->portnum);
1135 err = -EIO;
1136 goto err_out_disable_msi;
1137 }
1138
1139 pci_set_drvdata(pdev, adapter);
1140
1141 switch (adapter->ahw.port_type) {
1142 case NETXEN_NIC_GBE:
1143 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1144 adapter->netdev->name);
1145 break;
1146 case NETXEN_NIC_XGBE:
1147 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1148 adapter->netdev->name);
1149 break;
1150 }
1151
1152 return 0;
1153
1154 err_out_disable_msi:
1155 netxen_teardown_intr(adapter);
1156
1157 netxen_free_dummy_dma(adapter);
1158
1159 err_out_iounmap:
1160 netxen_cleanup_pci_map(adapter);
1161
1162 err_out_free_netdev:
1163 free_netdev(netdev);
1164
1165 err_out_free_res:
1166 pci_release_regions(pdev);
1167
1168 err_out_disable_pdev:
1169 pci_set_drvdata(pdev, NULL);
1170 pci_disable_device(pdev);
1171 return err;
1172 }
1173
1174 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1175 {
1176 struct netxen_adapter *adapter;
1177 struct net_device *netdev;
1178
1179 adapter = pci_get_drvdata(pdev);
1180 if (adapter == NULL)
1181 return;
1182
1183 netdev = adapter->netdev;
1184
1185 unregister_netdev(netdev);
1186
1187 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1188 netxen_nic_detach(adapter);
1189 }
1190
1191 if (adapter->portnum == 0)
1192 netxen_free_dummy_dma(adapter);
1193
1194 netxen_teardown_intr(adapter);
1195 netxen_free_sds_rings(&adapter->recv_ctx);
1196
1197 netxen_cleanup_pci_map(adapter);
1198
1199 netxen_release_firmware(adapter);
1200
1201 pci_release_regions(pdev);
1202 pci_disable_device(pdev);
1203 pci_set_drvdata(pdev, NULL);
1204
1205 free_netdev(netdev);
1206 }
1207
1208 #ifdef CONFIG_PM
1209 static int
1210 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1211 {
1212
1213 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1214 struct net_device *netdev = adapter->netdev;
1215
1216 netif_device_detach(netdev);
1217
1218 if (netif_running(netdev))
1219 netxen_nic_down(adapter, netdev);
1220
1221 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1222 netxen_nic_detach(adapter);
1223
1224 pci_save_state(pdev);
1225
1226 if (netxen_nic_wol_supported(adapter)) {
1227 pci_enable_wake(pdev, PCI_D3cold, 1);
1228 pci_enable_wake(pdev, PCI_D3hot, 1);
1229 }
1230
1231 pci_disable_device(pdev);
1232 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1233
1234 return 0;
1235 }
1236
1237 static int
1238 netxen_nic_resume(struct pci_dev *pdev)
1239 {
1240 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1241 struct net_device *netdev = adapter->netdev;
1242 int err;
1243
1244 pci_set_power_state(pdev, PCI_D0);
1245 pci_restore_state(pdev);
1246
1247 err = pci_enable_device(pdev);
1248 if (err)
1249 return err;
1250
1251 adapter->curr_window = 255;
1252
1253 err = netxen_start_firmware(adapter, 0);
1254 if (err) {
1255 dev_err(&pdev->dev, "failed to start firmware\n");
1256 return err;
1257 }
1258
1259 if (netif_running(netdev)) {
1260 err = netxen_nic_attach(adapter);
1261 if (err)
1262 return err;
1263
1264 err = netxen_nic_up(adapter, netdev);
1265 if (err)
1266 return err;
1267
1268 netif_device_attach(netdev);
1269 }
1270
1271 return 0;
1272 }
1273 #endif
1274
1275 static int netxen_nic_open(struct net_device *netdev)
1276 {
1277 struct netxen_adapter *adapter = netdev_priv(netdev);
1278 int err = 0;
1279
1280 if (adapter->driver_mismatch)
1281 return -EIO;
1282
1283 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1284 err = netxen_nic_attach(adapter);
1285 if (err)
1286 return err;
1287 }
1288
1289 err = netxen_nic_up(adapter, netdev);
1290 if (err)
1291 goto err_out;
1292
1293 netif_start_queue(netdev);
1294
1295 return 0;
1296
1297 err_out:
1298 netxen_nic_detach(adapter);
1299 return err;
1300 }
1301
1302 /*
1303 * netxen_nic_close - Disables a network interface entry point
1304 */
1305 static int netxen_nic_close(struct net_device *netdev)
1306 {
1307 struct netxen_adapter *adapter = netdev_priv(netdev);
1308
1309 netxen_nic_down(adapter, netdev);
1310 return 0;
1311 }
1312
1313 static void
1314 netxen_tso_check(struct net_device *netdev,
1315 struct nx_host_tx_ring *tx_ring,
1316 struct cmd_desc_type0 *first_desc,
1317 struct sk_buff *skb)
1318 {
1319 u8 opcode = TX_ETHER_PKT;
1320 __be16 protocol = skb->protocol;
1321 u16 flags = 0;
1322 u32 producer;
1323 int copied, offset, copy_len, hdr_len = 0, tso = 0;
1324 struct cmd_desc_type0 *hwdesc;
1325
1326 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1327 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1328 protocol = vh->h_vlan_encapsulated_proto;
1329 flags = FLAGS_VLAN_TAGGED;
1330 }
1331
1332 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1333 skb_shinfo(skb)->gso_size > 0) {
1334
1335 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1336
1337 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1338 first_desc->total_hdr_length = hdr_len;
1339
1340 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1341 TX_TCP_LSO6 : TX_TCP_LSO;
1342 tso = 1;
1343
1344 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1345 u8 l4proto;
1346
1347 if (protocol == cpu_to_be16(ETH_P_IP)) {
1348 l4proto = ip_hdr(skb)->protocol;
1349
1350 if (l4proto == IPPROTO_TCP)
1351 opcode = TX_TCP_PKT;
1352 else if(l4proto == IPPROTO_UDP)
1353 opcode = TX_UDP_PKT;
1354 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1355 l4proto = ipv6_hdr(skb)->nexthdr;
1356
1357 if (l4proto == IPPROTO_TCP)
1358 opcode = TX_TCPV6_PKT;
1359 else if(l4proto == IPPROTO_UDP)
1360 opcode = TX_UDPV6_PKT;
1361 }
1362 }
1363 first_desc->tcp_hdr_offset = skb_transport_offset(skb);
1364 first_desc->ip_hdr_offset = skb_network_offset(skb);
1365 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1366
1367 if (!tso)
1368 return;
1369
1370 /* For LSO, we need to copy the MAC/IP/TCP headers into
1371 * the descriptor ring
1372 */
1373 producer = tx_ring->producer;
1374 copied = 0;
1375 offset = 2;
1376
1377 while (copied < hdr_len) {
1378
1379 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1380 (hdr_len - copied));
1381
1382 hwdesc = &tx_ring->desc_head[producer];
1383 tx_ring->cmd_buf_arr[producer].skb = NULL;
1384
1385 skb_copy_from_linear_data_offset(skb, copied,
1386 (char *)hwdesc + offset, copy_len);
1387
1388 copied += copy_len;
1389 offset = 0;
1390
1391 producer = get_next_index(producer, tx_ring->num_desc);
1392 }
1393
1394 tx_ring->producer = producer;
1395 barrier();
1396 }
1397
1398 static void
1399 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1400 struct netxen_cmd_buffer *pbuf, int last)
1401 {
1402 int k;
1403 struct netxen_skb_frag *buffrag;
1404
1405 buffrag = &pbuf->frag_array[0];
1406 pci_unmap_single(pdev, buffrag->dma,
1407 buffrag->length, PCI_DMA_TODEVICE);
1408
1409 for (k = 1; k < last; k++) {
1410 buffrag = &pbuf->frag_array[k];
1411 pci_unmap_page(pdev, buffrag->dma,
1412 buffrag->length, PCI_DMA_TODEVICE);
1413 }
1414 }
1415
1416 static inline void
1417 netxen_clear_cmddesc(u64 *desc)
1418 {
1419 desc[0] = 0ULL;
1420 desc[2] = 0ULL;
1421 }
1422
1423 static int
1424 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1425 {
1426 struct netxen_adapter *adapter = netdev_priv(netdev);
1427 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1428 struct skb_frag_struct *frag;
1429 struct netxen_cmd_buffer *pbuf;
1430 struct netxen_skb_frag *buffrag;
1431 struct cmd_desc_type0 *hwdesc, *first_desc;
1432 struct pci_dev *pdev;
1433 dma_addr_t temp_dma;
1434 int i, k;
1435 unsigned long offset;
1436
1437 u32 producer;
1438 int len, frag_count, no_of_desc;
1439 u32 num_txd = tx_ring->num_desc;
1440
1441 frag_count = skb_shinfo(skb)->nr_frags + 1;
1442
1443 /* 4 fragments per cmd des */
1444 no_of_desc = (frag_count + 3) >> 2;
1445
1446 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1447 netif_stop_queue(netdev);
1448 return NETDEV_TX_BUSY;
1449 }
1450
1451 producer = tx_ring->producer;
1452
1453 pdev = adapter->pdev;
1454 len = skb->len - skb->data_len;
1455
1456 temp_dma = pci_map_single(pdev, skb->data, len, PCI_DMA_TODEVICE);
1457 if (pci_dma_mapping_error(pdev, temp_dma))
1458 goto drop_packet;
1459
1460 pbuf = &tx_ring->cmd_buf_arr[producer];
1461 pbuf->skb = skb;
1462 pbuf->frag_count = frag_count;
1463
1464 buffrag = &pbuf->frag_array[0];
1465 buffrag->dma = temp_dma;
1466 buffrag->length = len;
1467
1468 first_desc = hwdesc = &tx_ring->desc_head[producer];
1469 netxen_clear_cmddesc((u64 *)hwdesc);
1470 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1471 netxen_set_tx_port(hwdesc, adapter->portnum);
1472
1473 hwdesc->buffer_length[0] = cpu_to_le16(len);
1474 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1475
1476 for (i = 1, k = 1; i < frag_count; i++, k++) {
1477
1478 /* move to next desc. if there is a need */
1479 if ((i & 0x3) == 0) {
1480 k = 0;
1481 producer = get_next_index(producer, num_txd);
1482 hwdesc = &tx_ring->desc_head[producer];
1483 netxen_clear_cmddesc((u64 *)hwdesc);
1484 pbuf = &tx_ring->cmd_buf_arr[producer];
1485 pbuf->skb = NULL;
1486 }
1487 buffrag = &pbuf->frag_array[i];
1488 frag = &skb_shinfo(skb)->frags[i - 1];
1489 len = frag->size;
1490 offset = frag->page_offset;
1491
1492 temp_dma = pci_map_page(pdev, frag->page, offset,
1493 len, PCI_DMA_TODEVICE);
1494 if (pci_dma_mapping_error(pdev, temp_dma)) {
1495 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1496 goto drop_packet;
1497 }
1498
1499 buffrag->dma = temp_dma;
1500 buffrag->length = len;
1501
1502 hwdesc->buffer_length[k] = cpu_to_le16(len);
1503 switch (k) {
1504 case 0:
1505 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1506 break;
1507 case 1:
1508 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1509 break;
1510 case 2:
1511 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1512 break;
1513 case 3:
1514 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1515 break;
1516 }
1517 }
1518 tx_ring->producer = get_next_index(producer, num_txd);
1519
1520 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1521
1522 netxen_nic_update_cmd_producer(adapter, tx_ring);
1523
1524 adapter->stats.txbytes += skb->len;
1525 adapter->stats.xmitcalled++;
1526
1527 return NETDEV_TX_OK;
1528
1529 drop_packet:
1530 adapter->stats.txdropped++;
1531 dev_kfree_skb_any(skb);
1532 return NETDEV_TX_OK;
1533 }
1534
1535 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1536 {
1537 struct net_device *netdev = adapter->netdev;
1538 uint32_t temp, temp_state, temp_val;
1539 int rv = 0;
1540
1541 temp = NXRD32(adapter, CRB_TEMP_STATE);
1542
1543 temp_state = nx_get_temp_state(temp);
1544 temp_val = nx_get_temp_val(temp);
1545
1546 if (temp_state == NX_TEMP_PANIC) {
1547 printk(KERN_ALERT
1548 "%s: Device temperature %d degrees C exceeds"
1549 " maximum allowed. Hardware has been shut down.\n",
1550 netdev->name, temp_val);
1551
1552 netif_device_detach(netdev);
1553 netxen_nic_down(adapter, netdev);
1554 netxen_nic_detach(adapter);
1555
1556 rv = 1;
1557 } else if (temp_state == NX_TEMP_WARN) {
1558 if (adapter->temp == NX_TEMP_NORMAL) {
1559 printk(KERN_ALERT
1560 "%s: Device temperature %d degrees C "
1561 "exceeds operating range."
1562 " Immediate action needed.\n",
1563 netdev->name, temp_val);
1564 }
1565 } else {
1566 if (adapter->temp == NX_TEMP_WARN) {
1567 printk(KERN_INFO
1568 "%s: Device temperature is now %d degrees C"
1569 " in normal range.\n", netdev->name,
1570 temp_val);
1571 }
1572 }
1573 adapter->temp = temp_state;
1574 return rv;
1575 }
1576
1577 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1578 {
1579 struct net_device *netdev = adapter->netdev;
1580
1581 if (adapter->ahw.linkup && !linkup) {
1582 printk(KERN_INFO "%s: %s NIC Link is down\n",
1583 netxen_nic_driver_name, netdev->name);
1584 adapter->ahw.linkup = 0;
1585 if (netif_running(netdev)) {
1586 netif_carrier_off(netdev);
1587 netif_stop_queue(netdev);
1588 }
1589
1590 if (!adapter->has_link_events)
1591 netxen_nic_set_link_parameters(adapter);
1592
1593 } else if (!adapter->ahw.linkup && linkup) {
1594 printk(KERN_INFO "%s: %s NIC Link is up\n",
1595 netxen_nic_driver_name, netdev->name);
1596 adapter->ahw.linkup = 1;
1597 if (netif_running(netdev)) {
1598 netif_carrier_on(netdev);
1599 netif_wake_queue(netdev);
1600 }
1601
1602 if (!adapter->has_link_events)
1603 netxen_nic_set_link_parameters(adapter);
1604 }
1605 }
1606
1607 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1608 {
1609 u32 val, port, linkup;
1610
1611 port = adapter->physical_port;
1612
1613 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1614 val = NXRD32(adapter, CRB_XG_STATE_P3);
1615 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1616 linkup = (val == XG_LINK_UP_P3);
1617 } else {
1618 val = NXRD32(adapter, CRB_XG_STATE);
1619 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1620 linkup = (val >> port) & 1;
1621 else {
1622 val = (val >> port*8) & 0xff;
1623 linkup = (val == XG_LINK_UP);
1624 }
1625 }
1626
1627 netxen_advert_link_change(adapter, linkup);
1628 }
1629
1630 static void netxen_watchdog(unsigned long v)
1631 {
1632 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1633
1634 SCHEDULE_WORK(&adapter->watchdog_task);
1635 }
1636
1637 void netxen_watchdog_task(struct work_struct *work)
1638 {
1639 struct netxen_adapter *adapter =
1640 container_of(work, struct netxen_adapter, watchdog_task);
1641
1642 if (netxen_nic_check_temp(adapter))
1643 return;
1644
1645 if (!adapter->has_link_events)
1646 netxen_nic_handle_phy_intr(adapter);
1647
1648 if (netif_running(adapter->netdev))
1649 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1650 }
1651
1652 static void netxen_tx_timeout(struct net_device *netdev)
1653 {
1654 struct netxen_adapter *adapter = (struct netxen_adapter *)
1655 netdev_priv(netdev);
1656 SCHEDULE_WORK(&adapter->tx_timeout_task);
1657 }
1658
1659 static void netxen_tx_timeout_task(struct work_struct *work)
1660 {
1661 struct netxen_adapter *adapter =
1662 container_of(work, struct netxen_adapter, tx_timeout_task);
1663
1664 if (!netif_running(adapter->netdev))
1665 return;
1666
1667 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1668 netxen_nic_driver_name, adapter->netdev->name);
1669
1670 netxen_napi_disable(adapter);
1671
1672 adapter->netdev->trans_start = jiffies;
1673
1674 netxen_napi_enable(adapter);
1675 netif_wake_queue(adapter->netdev);
1676 }
1677
1678 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1679 {
1680 struct netxen_adapter *adapter = netdev_priv(netdev);
1681 struct net_device_stats *stats = &adapter->net_stats;
1682
1683 memset(stats, 0, sizeof(*stats));
1684
1685 stats->rx_packets = adapter->stats.no_rcv;
1686 stats->tx_packets = adapter->stats.xmitfinished;
1687 stats->rx_bytes = adapter->stats.rxbytes;
1688 stats->tx_bytes = adapter->stats.txbytes;
1689 stats->rx_dropped = adapter->stats.rxdropped;
1690 stats->tx_dropped = adapter->stats.txdropped;
1691
1692 return stats;
1693 }
1694
1695 static irqreturn_t netxen_intr(int irq, void *data)
1696 {
1697 struct nx_host_sds_ring *sds_ring = data;
1698 struct netxen_adapter *adapter = sds_ring->adapter;
1699 u32 status = 0;
1700
1701 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1702
1703 if (!(status & adapter->legacy_intr.int_vec_bit))
1704 return IRQ_NONE;
1705
1706 if (adapter->ahw.revision_id >= NX_P3_B1) {
1707 /* check interrupt state machine, to be sure */
1708 status = adapter->pci_read_immediate(adapter,
1709 ISR_INT_STATE_REG);
1710 if (!ISR_LEGACY_INT_TRIGGERED(status))
1711 return IRQ_NONE;
1712
1713 } else {
1714 unsigned long our_int = 0;
1715
1716 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1717
1718 /* not our interrupt */
1719 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1720 return IRQ_NONE;
1721
1722 /* claim interrupt */
1723 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1724 }
1725
1726 /* clear interrupt */
1727 if (adapter->fw_major < 4)
1728 netxen_nic_disable_int(sds_ring);
1729
1730 adapter->pci_write_immediate(adapter,
1731 adapter->legacy_intr.tgt_status_reg,
1732 0xffffffff);
1733 /* read twice to ensure write is flushed */
1734 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1735 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1736
1737 napi_schedule(&sds_ring->napi);
1738
1739 return IRQ_HANDLED;
1740 }
1741
1742 static irqreturn_t netxen_msi_intr(int irq, void *data)
1743 {
1744 struct nx_host_sds_ring *sds_ring = data;
1745 struct netxen_adapter *adapter = sds_ring->adapter;
1746
1747 /* clear interrupt */
1748 adapter->pci_write_immediate(adapter,
1749 adapter->msi_tgt_status, 0xffffffff);
1750
1751 napi_schedule(&sds_ring->napi);
1752 return IRQ_HANDLED;
1753 }
1754
1755 static irqreturn_t netxen_msix_intr(int irq, void *data)
1756 {
1757 struct nx_host_sds_ring *sds_ring = data;
1758
1759 napi_schedule(&sds_ring->napi);
1760 return IRQ_HANDLED;
1761 }
1762
1763 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1764 {
1765 struct nx_host_sds_ring *sds_ring =
1766 container_of(napi, struct nx_host_sds_ring, napi);
1767
1768 struct netxen_adapter *adapter = sds_ring->adapter;
1769
1770 int tx_complete;
1771 int work_done;
1772
1773 tx_complete = netxen_process_cmd_ring(adapter);
1774
1775 work_done = netxen_process_rcv_ring(sds_ring, budget);
1776
1777 if ((work_done < budget) && tx_complete) {
1778 napi_complete(&sds_ring->napi);
1779 if (netif_running(adapter->netdev))
1780 netxen_nic_enable_int(sds_ring);
1781 }
1782
1783 return work_done;
1784 }
1785
1786 #ifdef CONFIG_NET_POLL_CONTROLLER
1787 static void netxen_nic_poll_controller(struct net_device *netdev)
1788 {
1789 struct netxen_adapter *adapter = netdev_priv(netdev);
1790 disable_irq(adapter->irq);
1791 netxen_intr(adapter->irq, adapter);
1792 enable_irq(adapter->irq);
1793 }
1794 #endif
1795
1796 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
1797
1798 static int
1799 netxen_destip_supported(struct netxen_adapter *adapter)
1800 {
1801 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1802 return 0;
1803
1804 if (adapter->ahw.cut_through)
1805 return 0;
1806
1807 return 1;
1808 }
1809
1810 static int netxen_netdev_event(struct notifier_block *this,
1811 unsigned long event, void *ptr)
1812 {
1813 struct netxen_adapter *adapter;
1814 struct net_device *dev = (struct net_device *)ptr;
1815 struct in_device *indev;
1816
1817 recheck:
1818 if (dev == NULL)
1819 goto done;
1820
1821 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1822 dev = vlan_dev_real_dev(dev);
1823 goto recheck;
1824 }
1825
1826 if (!is_netxen_netdev(dev))
1827 goto done;
1828
1829 adapter = netdev_priv(dev);
1830
1831 if (!adapter || !netxen_destip_supported(adapter))
1832 goto done;
1833
1834 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1835 goto done;
1836
1837 indev = in_dev_get(dev);
1838 if (!indev)
1839 goto done;
1840
1841 for_ifa(indev) {
1842 switch (event) {
1843 case NETDEV_UP:
1844 netxen_config_ipaddr(adapter,
1845 ifa->ifa_address, NX_IP_UP);
1846 break;
1847 case NETDEV_DOWN:
1848 netxen_config_ipaddr(adapter,
1849 ifa->ifa_address, NX_IP_DOWN);
1850 break;
1851 default:
1852 break;
1853 }
1854 } endfor_ifa(indev);
1855
1856 in_dev_put(indev);
1857 done:
1858 return NOTIFY_DONE;
1859 }
1860
1861 static int
1862 netxen_inetaddr_event(struct notifier_block *this,
1863 unsigned long event, void *ptr)
1864 {
1865 struct netxen_adapter *adapter;
1866 struct net_device *dev;
1867
1868 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
1869
1870 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
1871
1872 recheck:
1873 if (dev == NULL || !netif_running(dev))
1874 goto done;
1875
1876 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1877 dev = vlan_dev_real_dev(dev);
1878 goto recheck;
1879 }
1880
1881 if (!is_netxen_netdev(dev))
1882 goto done;
1883
1884 adapter = netdev_priv(dev);
1885
1886 if (!adapter || !netxen_destip_supported(adapter))
1887 goto done;
1888
1889 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1890 goto done;
1891
1892 switch (event) {
1893 case NETDEV_UP:
1894 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
1895 break;
1896 case NETDEV_DOWN:
1897 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
1898 break;
1899 default:
1900 break;
1901 }
1902
1903 done:
1904 return NOTIFY_DONE;
1905 }
1906
1907 static struct notifier_block netxen_netdev_cb = {
1908 .notifier_call = netxen_netdev_event,
1909 };
1910
1911 static struct notifier_block netxen_inetaddr_cb = {
1912 .notifier_call = netxen_inetaddr_event,
1913 };
1914
1915 static struct pci_driver netxen_driver = {
1916 .name = netxen_nic_driver_name,
1917 .id_table = netxen_pci_tbl,
1918 .probe = netxen_nic_probe,
1919 .remove = __devexit_p(netxen_nic_remove),
1920 #ifdef CONFIG_PM
1921 .suspend = netxen_nic_suspend,
1922 .resume = netxen_nic_resume
1923 #endif
1924 };
1925
1926 /* Driver Registration on NetXen card */
1927
1928 static int __init netxen_init_module(void)
1929 {
1930 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1931
1932 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1933 return -ENOMEM;
1934
1935 register_netdevice_notifier(&netxen_netdev_cb);
1936 register_inetaddr_notifier(&netxen_inetaddr_cb);
1937
1938 return pci_register_driver(&netxen_driver);
1939 }
1940
1941 module_init(netxen_init_module);
1942
1943 static void __exit netxen_exit_module(void)
1944 {
1945 pci_unregister_driver(&netxen_driver);
1946
1947 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
1948 unregister_netdevice_notifier(&netxen_netdev_cb);
1949 destroy_workqueue(netxen_workq);
1950 }
1951
1952 module_exit(netxen_exit_module);
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