/drivers/net/netxen/netxen_nic_main.c
C | 3012 lines | 2266 code | 663 blank | 83 comment | 458 complexity | 5c09f269f24caa803a47e9b15d64ccd7 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called "COPYING".
23 *
24 */
25
26#include <linux/slab.h>
27#include <linux/vmalloc.h>
28#include <linux/interrupt.h>
29#include "netxen_nic_hw.h"
30
31#include "netxen_nic.h"
32
33#include <linux/dma-mapping.h>
34#include <linux/if_vlan.h>
35#include <net/ip.h>
36#include <linux/ipv6.h>
37#include <linux/inetdevice.h>
38#include <linux/sysfs.h>
39#include <linux/aer.h>
40
41MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
42MODULE_LICENSE("GPL");
43MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
44MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
45
46char netxen_nic_driver_name[] = "netxen_nic";
47static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
48 NETXEN_NIC_LINUX_VERSIONID;
49
50static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
51
52/* Default to restricted 1G auto-neg mode */
53static int wol_port_mode = 5;
54
55static int use_msi = 1;
56
57static int use_msi_x = 1;
58
59static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
60module_param(auto_fw_reset, int, 0644);
61MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
62
63static int __devinit netxen_nic_probe(struct pci_dev *pdev,
64 const struct pci_device_id *ent);
65static void __devexit netxen_nic_remove(struct pci_dev *pdev);
66static int netxen_nic_open(struct net_device *netdev);
67static int netxen_nic_close(struct net_device *netdev);
68static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
69 struct net_device *);
70static void netxen_tx_timeout(struct net_device *netdev);
71static void netxen_tx_timeout_task(struct work_struct *work);
72static void netxen_fw_poll_work(struct work_struct *work);
73static void netxen_schedule_work(struct netxen_adapter *adapter,
74 work_func_t func, int delay);
75static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
76static int netxen_nic_poll(struct napi_struct *napi, int budget);
77#ifdef CONFIG_NET_POLL_CONTROLLER
78static void netxen_nic_poll_controller(struct net_device *netdev);
79#endif
80
81static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
82static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
83static void netxen_create_diag_entries(struct netxen_adapter *adapter);
84static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
85
86static int nx_dev_request_aer(struct netxen_adapter *adapter);
87static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
88static int netxen_can_start_firmware(struct netxen_adapter *adapter);
89
90static irqreturn_t netxen_intr(int irq, void *data);
91static irqreturn_t netxen_msi_intr(int irq, void *data);
92static irqreturn_t netxen_msix_intr(int irq, void *data);
93
94static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
95static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);
96static int netxen_nic_set_mac(struct net_device *netdev, void *p);
97
98/* PCI Device ID Table */
99#define ENTRY(device) \
100 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
101 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
102
103static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
104 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
105 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
106 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
107 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
110 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
111 ENTRY(PCI_DEVICE_ID_NX3031),
112 {0,}
113};
114
115MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
116
117static uint32_t crb_cmd_producer[4] = {
118 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
119 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
120};
121
122void
123netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
124 struct nx_host_tx_ring *tx_ring)
125{
126 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
127}
128
129static uint32_t crb_cmd_consumer[4] = {
130 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
131 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
132};
133
134static inline void
135netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
136 struct nx_host_tx_ring *tx_ring)
137{
138 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
139}
140
141static uint32_t msi_tgt_status[8] = {
142 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
143 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
144 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
145 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
146};
147
148static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
149
150static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
151{
152 struct netxen_adapter *adapter = sds_ring->adapter;
153
154 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
155}
156
157static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
158{
159 struct netxen_adapter *adapter = sds_ring->adapter;
160
161 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
162
163 if (!NETXEN_IS_MSI_FAMILY(adapter))
164 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
165}
166
167static int
168netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
169{
170 int size = sizeof(struct nx_host_sds_ring) * count;
171
172 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
173
174 return recv_ctx->sds_rings == NULL;
175}
176
177static void
178netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
179{
180 if (recv_ctx->sds_rings != NULL)
181 kfree(recv_ctx->sds_rings);
182
183 recv_ctx->sds_rings = NULL;
184}
185
186static int
187netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
188{
189 int ring;
190 struct nx_host_sds_ring *sds_ring;
191 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
192
193 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
194 return -ENOMEM;
195
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netif_napi_add(netdev, &sds_ring->napi,
199 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
200 }
201
202 return 0;
203}
204
205static void
206netxen_napi_del(struct netxen_adapter *adapter)
207{
208 int ring;
209 struct nx_host_sds_ring *sds_ring;
210 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
211
212 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
213 sds_ring = &recv_ctx->sds_rings[ring];
214 netif_napi_del(&sds_ring->napi);
215 }
216
217 netxen_free_sds_rings(&adapter->recv_ctx);
218}
219
220static void
221netxen_napi_enable(struct netxen_adapter *adapter)
222{
223 int ring;
224 struct nx_host_sds_ring *sds_ring;
225 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
226
227 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
228 sds_ring = &recv_ctx->sds_rings[ring];
229 napi_enable(&sds_ring->napi);
230 netxen_nic_enable_int(sds_ring);
231 }
232}
233
234static void
235netxen_napi_disable(struct netxen_adapter *adapter)
236{
237 int ring;
238 struct nx_host_sds_ring *sds_ring;
239 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
240
241 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
242 sds_ring = &recv_ctx->sds_rings[ring];
243 netxen_nic_disable_int(sds_ring);
244 napi_synchronize(&sds_ring->napi);
245 napi_disable(&sds_ring->napi);
246 }
247}
248
249static int nx_set_dma_mask(struct netxen_adapter *adapter)
250{
251 struct pci_dev *pdev = adapter->pdev;
252 uint64_t mask, cmask;
253
254 adapter->pci_using_dac = 0;
255
256 mask = DMA_BIT_MASK(32);
257 cmask = DMA_BIT_MASK(32);
258
259 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
260#ifndef CONFIG_IA64
261 mask = DMA_BIT_MASK(35);
262#endif
263 } else {
264 mask = DMA_BIT_MASK(39);
265 cmask = mask;
266 }
267
268 if (pci_set_dma_mask(pdev, mask) == 0 &&
269 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
270 adapter->pci_using_dac = 1;
271 return 0;
272 }
273
274 return -EIO;
275}
276
277/* Update addressable range if firmware supports it */
278static int
279nx_update_dma_mask(struct netxen_adapter *adapter)
280{
281 int change, shift, err;
282 uint64_t mask, old_mask, old_cmask;
283 struct pci_dev *pdev = adapter->pdev;
284
285 change = 0;
286
287 shift = NXRD32(adapter, CRB_DMA_SHIFT);
288 if (shift > 32)
289 return 0;
290
291 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
292 change = 1;
293 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
294 change = 1;
295
296 if (change) {
297 old_mask = pdev->dma_mask;
298 old_cmask = pdev->dev.coherent_dma_mask;
299
300 mask = DMA_BIT_MASK(32+shift);
301
302 err = pci_set_dma_mask(pdev, mask);
303 if (err)
304 goto err_out;
305
306 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
307
308 err = pci_set_consistent_dma_mask(pdev, mask);
309 if (err)
310 goto err_out;
311 }
312 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
313 }
314
315 return 0;
316
317err_out:
318 pci_set_dma_mask(pdev, old_mask);
319 pci_set_consistent_dma_mask(pdev, old_cmask);
320 return err;
321}
322
323static int
324netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
325{
326 u32 val, timeout;
327
328 if (first_boot == 0x55555555) {
329 /* This is the first boot after power up */
330 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
331
332 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
333 return 0;
334
335 /* PCI bus master workaround */
336 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
337 if (!(first_boot & 0x4)) {
338 first_boot |= 0x4;
339 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
340 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
341 }
342
343 /* This is the first boot after power up */
344 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
345 if (first_boot != 0x80000f) {
346 /* clear the register for future unloads/loads */
347 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
348 return -EIO;
349 }
350
351 /* Start P2 boot loader */
352 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
353 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
354 timeout = 0;
355 do {
356 msleep(1);
357 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
358
359 if (++timeout > 5000)
360 return -EIO;
361
362 } while (val == NETXEN_BDINFO_MAGIC);
363 }
364 return 0;
365}
366
367static void netxen_set_port_mode(struct netxen_adapter *adapter)
368{
369 u32 val, data;
370
371 val = adapter->ahw.board_type;
372 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
373 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
374 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
375 data = NETXEN_PORT_MODE_802_3_AP;
376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
377 } else if (port_mode == NETXEN_PORT_MODE_XG) {
378 data = NETXEN_PORT_MODE_XG;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
384 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 } else {
387 data = NETXEN_PORT_MODE_AUTO_NEG;
388 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
389 }
390
391 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
392 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
393 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
394 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
395 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
396 }
397 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
398 }
399}
400
401static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
402{
403 u32 control;
404 int pos;
405
406 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
407 if (pos) {
408 pci_read_config_dword(pdev, pos, &control);
409 if (enable)
410 control |= PCI_MSIX_FLAGS_ENABLE;
411 else
412 control = 0;
413 pci_write_config_dword(pdev, pos, control);
414 }
415}
416
417static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
418{
419 int i;
420
421 for (i = 0; i < count; i++)
422 adapter->msix_entries[i].entry = i;
423}
424
425static int
426netxen_read_mac_addr(struct netxen_adapter *adapter)
427{
428 int i;
429 unsigned char *p;
430 u64 mac_addr;
431 struct net_device *netdev = adapter->netdev;
432 struct pci_dev *pdev = adapter->pdev;
433
434 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
435 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
436 return -EIO;
437 } else {
438 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
439 return -EIO;
440 }
441
442 p = (unsigned char *)&mac_addr;
443 for (i = 0; i < 6; i++)
444 netdev->dev_addr[i] = *(p + 5 - i);
445
446 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
447 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
448
449 /* set station address */
450
451 if (!is_valid_ether_addr(netdev->perm_addr))
452 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
453
454 return 0;
455}
456
457static int netxen_nic_set_mac(struct net_device *netdev, void *p)
458{
459 struct netxen_adapter *adapter = netdev_priv(netdev);
460 struct sockaddr *addr = p;
461
462 if (!is_valid_ether_addr(addr->sa_data))
463 return -EINVAL;
464
465 if (netif_running(netdev)) {
466 netif_device_detach(netdev);
467 netxen_napi_disable(adapter);
468 }
469
470 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
471 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
472 adapter->macaddr_set(adapter, addr->sa_data);
473
474 if (netif_running(netdev)) {
475 netif_device_attach(netdev);
476 netxen_napi_enable(adapter);
477 }
478 return 0;
479}
480
481static void netxen_set_multicast_list(struct net_device *dev)
482{
483 struct netxen_adapter *adapter = netdev_priv(dev);
484
485 adapter->set_multi(dev);
486}
487
488static u32 netxen_fix_features(struct net_device *dev, u32 features)
489{
490 if (!(features & NETIF_F_RXCSUM)) {
491 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
492
493 features &= ~NETIF_F_LRO;
494 }
495
496 return features;
497}
498
499static int netxen_set_features(struct net_device *dev, u32 features)
500{
501 struct netxen_adapter *adapter = netdev_priv(dev);
502 int hw_lro;
503
504 if (!((dev->features ^ features) & NETIF_F_LRO))
505 return 0;
506
507 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
508 : NETXEN_NIC_LRO_DISABLED;
509
510 if (netxen_config_hw_lro(adapter, hw_lro))
511 return -EIO;
512
513 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
514 return -EIO;
515
516 return 0;
517}
518
519static const struct net_device_ops netxen_netdev_ops = {
520 .ndo_open = netxen_nic_open,
521 .ndo_stop = netxen_nic_close,
522 .ndo_start_xmit = netxen_nic_xmit_frame,
523 .ndo_get_stats = netxen_nic_get_stats,
524 .ndo_validate_addr = eth_validate_addr,
525 .ndo_set_multicast_list = netxen_set_multicast_list,
526 .ndo_set_mac_address = netxen_nic_set_mac,
527 .ndo_change_mtu = netxen_nic_change_mtu,
528 .ndo_tx_timeout = netxen_tx_timeout,
529 .ndo_fix_features = netxen_fix_features,
530 .ndo_set_features = netxen_set_features,
531#ifdef CONFIG_NET_POLL_CONTROLLER
532 .ndo_poll_controller = netxen_nic_poll_controller,
533#endif
534};
535
536static void
537netxen_setup_intr(struct netxen_adapter *adapter)
538{
539 struct netxen_legacy_intr_set *legacy_intrp;
540 struct pci_dev *pdev = adapter->pdev;
541 int err, num_msix;
542
543 if (adapter->rss_supported) {
544 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
545 MSIX_ENTRIES_PER_ADAPTER : 2;
546 } else
547 num_msix = 1;
548
549 adapter->max_sds_rings = 1;
550
551 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
552
553 if (adapter->ahw.revision_id >= NX_P3_B0)
554 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
555 else
556 legacy_intrp = &legacy_intr[0];
557
558 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
559 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
560 legacy_intrp->tgt_status_reg);
561 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
562 legacy_intrp->tgt_mask_reg);
563 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
564 legacy_intrp->pci_int_reg);
565 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
566
567 if (adapter->ahw.revision_id >= NX_P3_B1)
568 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
569 ISR_INT_STATE_REG);
570 else
571 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
572 CRB_INT_VECTOR);
573
574 netxen_set_msix_bit(pdev, 0);
575
576 if (adapter->msix_supported) {
577
578 netxen_init_msix_entries(adapter, num_msix);
579 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
580 if (err == 0) {
581 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
582 netxen_set_msix_bit(pdev, 1);
583
584 if (adapter->rss_supported)
585 adapter->max_sds_rings = num_msix;
586
587 dev_info(&pdev->dev, "using msi-x interrupts\n");
588 return;
589 }
590
591 if (err > 0)
592 pci_disable_msix(pdev);
593
594 /* fall through for msi */
595 }
596
597 if (use_msi && !pci_enable_msi(pdev)) {
598 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
599 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
600 msi_tgt_status[adapter->ahw.pci_func]);
601 dev_info(&pdev->dev, "using msi interrupts\n");
602 adapter->msix_entries[0].vector = pdev->irq;
603 return;
604 }
605
606 dev_info(&pdev->dev, "using legacy interrupts\n");
607 adapter->msix_entries[0].vector = pdev->irq;
608}
609
610static void
611netxen_teardown_intr(struct netxen_adapter *adapter)
612{
613 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
614 pci_disable_msix(adapter->pdev);
615 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
616 pci_disable_msi(adapter->pdev);
617}
618
619static void
620netxen_cleanup_pci_map(struct netxen_adapter *adapter)
621{
622 if (adapter->ahw.db_base != NULL)
623 iounmap(adapter->ahw.db_base);
624 if (adapter->ahw.pci_base0 != NULL)
625 iounmap(adapter->ahw.pci_base0);
626 if (adapter->ahw.pci_base1 != NULL)
627 iounmap(adapter->ahw.pci_base1);
628 if (adapter->ahw.pci_base2 != NULL)
629 iounmap(adapter->ahw.pci_base2);
630}
631
632static int
633netxen_setup_pci_map(struct netxen_adapter *adapter)
634{
635 void __iomem *db_ptr = NULL;
636
637 resource_size_t mem_base, db_base;
638 unsigned long mem_len, db_len = 0;
639
640 struct pci_dev *pdev = adapter->pdev;
641 int pci_func = adapter->ahw.pci_func;
642 struct netxen_hardware_context *ahw = &adapter->ahw;
643
644 int err = 0;
645
646 /*
647 * Set the CRB window to invalid. If any register in window 0 is
648 * accessed it should set the window to 0 and then reset it to 1.
649 */
650 adapter->ahw.crb_win = -1;
651 adapter->ahw.ocm_win = -1;
652
653 /* remap phys address */
654 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
655 mem_len = pci_resource_len(pdev, 0);
656
657 /* 128 Meg of memory */
658 if (mem_len == NETXEN_PCI_128MB_SIZE) {
659
660 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
661 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
662 SECOND_PAGE_GROUP_SIZE);
663 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
664 THIRD_PAGE_GROUP_SIZE);
665 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
666 ahw->pci_base2 == NULL) {
667 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
668 err = -EIO;
669 goto err_out;
670 }
671
672 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
673
674 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
675
676 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
677 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
678 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
679 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
680 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
681 err = -EIO;
682 goto err_out;
683 }
684
685 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
686
687 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
688 if (ahw->pci_base0 == NULL) {
689 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
690 return -EIO;
691 }
692 ahw->pci_len0 = mem_len;
693 } else {
694 return -EIO;
695 }
696
697 netxen_setup_hwops(adapter);
698
699 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
700
701 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
702 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
703 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
704
705 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
706 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
707 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
708 }
709
710 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
711 goto skip_doorbell;
712
713 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
714 db_len = pci_resource_len(pdev, 4);
715
716 if (db_len == 0) {
717 printk(KERN_ERR "%s: doorbell is disabled\n",
718 netxen_nic_driver_name);
719 err = -EIO;
720 goto err_out;
721 }
722
723 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
724 if (!db_ptr) {
725 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
726 netxen_nic_driver_name);
727 err = -EIO;
728 goto err_out;
729 }
730
731skip_doorbell:
732 adapter->ahw.db_base = db_ptr;
733 adapter->ahw.db_len = db_len;
734 return 0;
735
736err_out:
737 netxen_cleanup_pci_map(adapter);
738 return err;
739}
740
741static void
742netxen_check_options(struct netxen_adapter *adapter)
743{
744 u32 fw_major, fw_minor, fw_build;
745 char brd_name[NETXEN_MAX_SHORT_NAME];
746 char serial_num[32];
747 int i, offset, val;
748 int *ptr32;
749 struct pci_dev *pdev = adapter->pdev;
750
751 adapter->driver_mismatch = 0;
752
753 ptr32 = (int *)&serial_num;
754 offset = NX_FW_SERIAL_NUM_OFFSET;
755 for (i = 0; i < 8; i++) {
756 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
757 dev_err(&pdev->dev, "error reading board info\n");
758 adapter->driver_mismatch = 1;
759 return;
760 }
761 ptr32[i] = cpu_to_le32(val);
762 offset += sizeof(u32);
763 }
764
765 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
766 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
767 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
768
769 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
770
771 if (adapter->portnum == 0) {
772 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
773
774 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
775 module_name(THIS_MODULE),
776 brd_name, serial_num, adapter->ahw.revision_id);
777 }
778
779 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
780 adapter->driver_mismatch = 1;
781 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
782 fw_major, fw_minor, fw_build);
783 return;
784 }
785
786 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
787 i = NXRD32(adapter, NETXEN_SRE_MISC);
788 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
789 }
790
791 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
792 fw_major, fw_minor, fw_build,
793 adapter->ahw.cut_through ? "cut-through" : "legacy");
794
795 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
796 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
797
798 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
799 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
800 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
801 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
802 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
803 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
804 }
805
806 adapter->msix_supported = 0;
807 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
808 adapter->msix_supported = !!use_msi_x;
809 adapter->rss_supported = !!use_msi_x;
810 } else {
811 u32 flashed_ver = 0;
812 netxen_rom_fast_read(adapter,
813 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
814 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
815
816 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
817 switch (adapter->ahw.board_type) {
818 case NETXEN_BRDTYPE_P2_SB31_10G:
819 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
820 adapter->msix_supported = !!use_msi_x;
821 adapter->rss_supported = !!use_msi_x;
822 break;
823 default:
824 break;
825 }
826 }
827 }
828
829 adapter->num_txd = MAX_CMD_DESCRIPTORS;
830
831 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
832 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
833 adapter->max_rds_rings = 3;
834 } else {
835 adapter->num_lro_rxd = 0;
836 adapter->max_rds_rings = 2;
837 }
838}
839
840static int
841netxen_start_firmware(struct netxen_adapter *adapter)
842{
843 int val, err, first_boot;
844 struct pci_dev *pdev = adapter->pdev;
845
846 /* required for NX2031 dummy dma */
847 err = nx_set_dma_mask(adapter);
848 if (err)
849 return err;
850
851 if (!netxen_can_start_firmware(adapter))
852 goto wait_init;
853
854 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
855
856 err = netxen_check_hw_init(adapter, first_boot);
857 if (err) {
858 dev_err(&pdev->dev, "error in init HW init sequence\n");
859 return err;
860 }
861
862 netxen_request_firmware(adapter);
863
864 err = netxen_need_fw_reset(adapter);
865 if (err < 0)
866 goto err_out;
867 if (err == 0)
868 goto wait_init;
869
870 if (first_boot != 0x55555555) {
871 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
872 netxen_pinit_from_rom(adapter);
873 msleep(1);
874 }
875
876 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
877 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
878 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
879
880 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
881 netxen_set_port_mode(adapter);
882
883 err = netxen_load_firmware(adapter);
884 if (err)
885 goto err_out;
886
887 netxen_release_firmware(adapter);
888
889 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
890
891 /* Initialize multicast addr pool owners */
892 val = 0x7654;
893 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
894 val |= 0x0f000000;
895 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
896
897 }
898
899 err = netxen_init_dummy_dma(adapter);
900 if (err)
901 goto err_out;
902
903 /*
904 * Tell the hardware our version number.
905 */
906 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
907 | ((_NETXEN_NIC_LINUX_MINOR << 8))
908 | (_NETXEN_NIC_LINUX_SUBVERSION);
909 NXWR32(adapter, CRB_DRIVER_VERSION, val);
910
911wait_init:
912 /* Handshake with the card before we register the devices. */
913 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
914 if (err) {
915 netxen_free_dummy_dma(adapter);
916 goto err_out;
917 }
918
919 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
920
921 nx_update_dma_mask(adapter);
922
923 netxen_check_options(adapter);
924
925 adapter->need_fw_reset = 0;
926
927 /* fall through and release firmware */
928
929err_out:
930 netxen_release_firmware(adapter);
931 return err;
932}
933
934static int
935netxen_nic_request_irq(struct netxen_adapter *adapter)
936{
937 irq_handler_t handler;
938 struct nx_host_sds_ring *sds_ring;
939 int err, ring;
940
941 unsigned long flags = 0;
942 struct net_device *netdev = adapter->netdev;
943 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
944
945 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
946 handler = netxen_msix_intr;
947 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
948 handler = netxen_msi_intr;
949 else {
950 flags |= IRQF_SHARED;
951 handler = netxen_intr;
952 }
953 adapter->irq = netdev->irq;
954
955 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
956 sds_ring = &recv_ctx->sds_rings[ring];
957 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
958 err = request_irq(sds_ring->irq, handler,
959 flags, sds_ring->name, sds_ring);
960 if (err)
961 return err;
962 }
963
964 return 0;
965}
966
967static void
968netxen_nic_free_irq(struct netxen_adapter *adapter)
969{
970 int ring;
971 struct nx_host_sds_ring *sds_ring;
972
973 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
974
975 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
976 sds_ring = &recv_ctx->sds_rings[ring];
977 free_irq(sds_ring->irq, sds_ring);
978 }
979}
980
981static void
982netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
983{
984 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
985 adapter->coal.normal.data.rx_time_us =
986 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
987 adapter->coal.normal.data.rx_packets =
988 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
989 adapter->coal.normal.data.tx_time_us =
990 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
991 adapter->coal.normal.data.tx_packets =
992 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
993}
994
995/* with rtnl_lock */
996static int
997__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
998{
999 int err;
1000
1001 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1002 return -EIO;
1003
1004 err = adapter->init_port(adapter, adapter->physical_port);
1005 if (err) {
1006 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1007 netxen_nic_driver_name, adapter->portnum);
1008 return err;
1009 }
1010 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1011 adapter->macaddr_set(adapter, adapter->mac_addr);
1012
1013 adapter->set_multi(netdev);
1014 adapter->set_mtu(adapter, netdev->mtu);
1015
1016 adapter->ahw.linkup = 0;
1017
1018 if (adapter->max_sds_rings > 1)
1019 netxen_config_rss(adapter, 1);
1020
1021 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1022 netxen_config_intr_coalesce(adapter);
1023
1024 if (netdev->features & NETIF_F_LRO)
1025 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1026
1027 netxen_napi_enable(adapter);
1028
1029 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1030 netxen_linkevent_request(adapter, 1);
1031 else
1032 netxen_nic_set_link_parameters(adapter);
1033
1034 set_bit(__NX_DEV_UP, &adapter->state);
1035 return 0;
1036}
1037
1038/* Usage: During resume and firmware recovery module.*/
1039
1040static inline int
1041netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1042{
1043 int err = 0;
1044
1045 rtnl_lock();
1046 if (netif_running(netdev))
1047 err = __netxen_nic_up(adapter, netdev);
1048 rtnl_unlock();
1049
1050 return err;
1051}
1052
1053/* with rtnl_lock */
1054static void
1055__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1056{
1057 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1058 return;
1059
1060 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1061 return;
1062
1063 smp_mb();
1064 spin_lock(&adapter->tx_clean_lock);
1065 netif_carrier_off(netdev);
1066 netif_tx_disable(netdev);
1067
1068 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1069 netxen_linkevent_request(adapter, 0);
1070
1071 if (adapter->stop_port)
1072 adapter->stop_port(adapter);
1073
1074 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1075 netxen_p3_free_mac_list(adapter);
1076
1077 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1078
1079 netxen_napi_disable(adapter);
1080
1081 netxen_release_tx_buffers(adapter);
1082 spin_unlock(&adapter->tx_clean_lock);
1083}
1084
1085/* Usage: During suspend and firmware recovery module */
1086
1087static inline void
1088netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1089{
1090 rtnl_lock();
1091 if (netif_running(netdev))
1092 __netxen_nic_down(adapter, netdev);
1093 rtnl_unlock();
1094
1095}
1096
1097static int
1098netxen_nic_attach(struct netxen_adapter *adapter)
1099{
1100 struct net_device *netdev = adapter->netdev;
1101 struct pci_dev *pdev = adapter->pdev;
1102 int err, ring;
1103 struct nx_host_rds_ring *rds_ring;
1104 struct nx_host_tx_ring *tx_ring;
1105
1106 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1107 return 0;
1108
1109 err = netxen_init_firmware(adapter);
1110 if (err)
1111 return err;
1112
1113 err = netxen_napi_add(adapter, netdev);
1114 if (err)
1115 return err;
1116
1117 err = netxen_alloc_sw_resources(adapter);
1118 if (err) {
1119 printk(KERN_ERR "%s: Error in setting sw resources\n",
1120 netdev->name);
1121 return err;
1122 }
1123
1124 err = netxen_alloc_hw_resources(adapter);
1125 if (err) {
1126 printk(KERN_ERR "%s: Error in setting hw resources\n",
1127 netdev->name);
1128 goto err_out_free_sw;
1129 }
1130
1131 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1132 tx_ring = adapter->tx_ring;
1133 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1134 crb_cmd_producer[adapter->portnum]);
1135 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1136 crb_cmd_consumer[adapter->portnum]);
1137
1138 tx_ring->producer = 0;
1139 tx_ring->sw_consumer = 0;
1140
1141 netxen_nic_update_cmd_producer(adapter, tx_ring);
1142 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1143 }
1144
1145 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1146 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1147 netxen_post_rx_buffers(adapter, ring, rds_ring);
1148 }
1149
1150 err = netxen_nic_request_irq(adapter);
1151 if (err) {
1152 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1153 netdev->name);
1154 goto err_out_free_rxbuf;
1155 }
1156
1157 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1158 netxen_nic_init_coalesce_defaults(adapter);
1159
1160 netxen_create_sysfs_entries(adapter);
1161
1162 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1163 return 0;
1164
1165err_out_free_rxbuf:
1166 netxen_release_rx_buffers(adapter);
1167 netxen_free_hw_resources(adapter);
1168err_out_free_sw:
1169 netxen_free_sw_resources(adapter);
1170 return err;
1171}
1172
1173static void
1174netxen_nic_detach(struct netxen_adapter *adapter)
1175{
1176 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1177 return;
1178
1179 netxen_remove_sysfs_entries(adapter);
1180
1181 netxen_free_hw_resources(adapter);
1182 netxen_release_rx_buffers(adapter);
1183 netxen_nic_free_irq(adapter);
1184 netxen_napi_del(adapter);
1185 netxen_free_sw_resources(adapter);
1186
1187 adapter->is_up = 0;
1188}
1189
1190int
1191netxen_nic_reset_context(struct netxen_adapter *adapter)
1192{
1193 int err = 0;
1194 struct net_device *netdev = adapter->netdev;
1195
1196 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1197 return -EBUSY;
1198
1199 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1200
1201 netif_device_detach(netdev);
1202
1203 if (netif_running(netdev))
1204 __netxen_nic_down(adapter, netdev);
1205
1206 netxen_nic_detach(adapter);
1207
1208 if (netif_running(netdev)) {
1209 err = netxen_nic_attach(adapter);
1210 if (!err)
1211 err = __netxen_nic_up(adapter, netdev);
1212
1213 if (err)
1214 goto done;
1215 }
1216
1217 netif_device_attach(netdev);
1218 }
1219
1220done:
1221 clear_bit(__NX_RESETTING, &adapter->state);
1222 return err;
1223}
1224
1225static int
1226netxen_setup_netdev(struct netxen_adapter *adapter,
1227 struct net_device *netdev)
1228{
1229 int err = 0;
1230 struct pci_dev *pdev = adapter->pdev;
1231
1232 adapter->mc_enabled = 0;
1233 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1234 adapter->max_mc_count = 38;
1235 else
1236 adapter->max_mc_count = 16;
1237
1238 netdev->netdev_ops = &netxen_netdev_ops;
1239 netdev->watchdog_timeo = 5*HZ;
1240
1241 netxen_nic_change_mtu(netdev, netdev->mtu);
1242
1243 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1244
1245 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1246 NETIF_F_RXCSUM;
1247
1248 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1249 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1250
1251 netdev->vlan_features |= netdev->hw_features;
1252
1253 if (adapter->pci_using_dac) {
1254 netdev->features |= NETIF_F_HIGHDMA;
1255 netdev->vlan_features |= NETIF_F_HIGHDMA;
1256 }
1257
1258 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1259 netdev->hw_features |= NETIF_F_HW_VLAN_TX;
1260
1261 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1262 netdev->hw_features |= NETIF_F_LRO;
1263
1264 netdev->features |= netdev->hw_features;
1265
1266 netdev->irq = adapter->msix_entries[0].vector;
1267
1268 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1269
1270 if (netxen_read_mac_addr(adapter))
1271 dev_warn(&pdev->dev, "failed to read mac addr\n");
1272
1273 netif_carrier_off(netdev);
1274
1275 err = register_netdev(netdev);
1276 if (err) {
1277 dev_err(&pdev->dev, "failed to register net device\n");
1278 return err;
1279 }
1280
1281 return 0;
1282}
1283
1284#ifdef CONFIG_PCIEAER
1285static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1286{
1287 struct pci_dev *pdev = adapter->pdev;
1288 struct pci_dev *root = pdev->bus->self;
1289 u32 aer_pos;
1290
1291 /* root bus? */
1292 if (!root)
1293 return;
1294
1295 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1296 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1297 return;
1298
1299 if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1300 return;
1301
1302 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1303 if (!aer_pos)
1304 return;
1305
1306 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1307}
1308#endif
1309
1310static int __devinit
1311netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1312{
1313 struct net_device *netdev = NULL;
1314 struct netxen_adapter *adapter = NULL;
1315 int i = 0, err;
1316 int pci_func_id = PCI_FUNC(pdev->devfn);
1317 uint8_t revision_id;
1318 u32 val;
1319
1320 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1321 pr_warning("%s: chip revisions between 0x%x-0x%x "
1322 "will not be enabled.\n",
1323 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1324 return -ENODEV;
1325 }
1326
1327 if ((err = pci_enable_device(pdev)))
1328 return err;
1329
1330 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1331 err = -ENODEV;
1332 goto err_out_disable_pdev;
1333 }
1334
1335 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1336 goto err_out_disable_pdev;
1337
1338 if (NX_IS_REVISION_P3(pdev->revision))
1339 pci_enable_pcie_error_reporting(pdev);
1340
1341 pci_set_master(pdev);
1342
1343 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1344 if(!netdev) {
1345 dev_err(&pdev->dev, "failed to allocate net_device\n");
1346 err = -ENOMEM;
1347 goto err_out_free_res;
1348 }
1349
1350 SET_NETDEV_DEV(netdev, &pdev->dev);
1351
1352 adapter = netdev_priv(netdev);
1353 adapter->netdev = netdev;
1354 adapter->pdev = pdev;
1355 adapter->ahw.pci_func = pci_func_id;
1356
1357 revision_id = pdev->revision;
1358 adapter->ahw.revision_id = revision_id;
1359
1360 rwlock_init(&adapter->ahw.crb_lock);
1361 spin_lock_init(&adapter->ahw.mem_lock);
1362
1363 spin_lock_init(&adapter->tx_clean_lock);
1364 INIT_LIST_HEAD(&adapter->mac_list);
1365
1366 err = netxen_setup_pci_map(adapter);
1367 if (err)
1368 goto err_out_free_netdev;
1369
1370 /* This will be reset for mezz cards */
1371 adapter->portnum = pci_func_id;
1372
1373 err = netxen_nic_get_board_info(adapter);
1374 if (err) {
1375 dev_err(&pdev->dev, "Error getting board config info.\n");
1376 goto err_out_iounmap;
1377 }
1378
1379#ifdef CONFIG_PCIEAER
1380 netxen_mask_aer_correctable(adapter);
1381#endif
1382
1383 /* Mezz cards have PCI function 0,2,3 enabled */
1384 switch (adapter->ahw.board_type) {
1385 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1386 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1387 if (pci_func_id >= 2)
1388 adapter->portnum = pci_func_id - 2;
1389 break;
1390 default:
1391 break;
1392 }
1393
1394 if (adapter->portnum == 0) {
1395 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1396 if (val != 0xffffffff && val != 0) {
1397 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1398 adapter->need_fw_reset = 1;
1399 }
1400 }
1401
1402 err = netxen_start_firmware(adapter);
1403 if (err)
1404 goto err_out_decr_ref;
1405
1406 /*
1407 * See if the firmware gave us a virtual-physical port mapping.
1408 */
1409 adapter->physical_port = adapter->portnum;
1410 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1411 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1412 if (i != 0x55555555)
1413 adapter->physical_port = i;
1414 }
1415
1416 netxen_nic_clear_stats(adapter);
1417
1418 netxen_setup_intr(adapter);
1419
1420 err = netxen_setup_netdev(adapter, netdev);
1421 if (err)
1422 goto err_out_disable_msi;
1423
1424 pci_set_drvdata(pdev, adapter);
1425
1426 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1427
1428 switch (adapter->ahw.port_type) {
1429 case NETXEN_NIC_GBE:
1430 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1431 adapter->netdev->name);
1432 break;
1433 case NETXEN_NIC_XGBE:
1434 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1435 adapter->netdev->name);
1436 break;
1437 }
1438
1439 netxen_create_diag_entries(adapter);
1440
1441 return 0;
1442
1443err_out_disable_msi:
1444 netxen_teardown_intr(adapter);
1445
1446 netxen_free_dummy_dma(adapter);
1447
1448err_out_decr_ref:
1449 nx_decr_dev_ref_cnt(adapter);
1450
1451err_out_iounmap:
1452 netxen_cleanup_pci_map(adapter);
1453
1454err_out_free_netdev:
1455 free_netdev(netdev);
1456
1457err_out_free_res:
1458 pci_release_regions(pdev);
1459
1460err_out_disable_pdev:
1461 pci_set_drvdata(pdev, NULL);
1462 pci_disable_device(pdev);
1463 return err;
1464}
1465
1466static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1467{
1468 struct netxen_adapter *adapter;
1469 struct net_device *netdev;
1470
1471 adapter = pci_get_drvdata(pdev);
1472 if (adapter == NULL)
1473 return;
1474
1475 netdev = adapter->netdev;
1476
1477 netxen_cancel_fw_work(adapter);
1478
1479 unregister_netdev(netdev);
1480
1481 cancel_work_sync(&adapter->tx_timeout_task);
1482
1483 netxen_nic_detach(adapter);
1484
1485 nx_decr_dev_ref_cnt(adapter);
1486
1487 if (adapter->portnum == 0)
1488 netxen_free_dummy_dma(adapter);
1489
1490 clear_bit(__NX_RESETTING, &adapter->state);
1491
1492 netxen_teardown_intr(adapter);
1493
1494 netxen_remove_diag_entries(adapter);
1495
1496 netxen_cleanup_pci_map(adapter);
1497
1498 netxen_release_firmware(adapter);
1499
1500 if (NX_IS_REVISION_P3(pdev->revision))
1501 pci_disable_pcie_error_reporting(pdev);
1502
1503 pci_release_regions(pdev);
1504 pci_disable_device(pdev);
1505 pci_set_drvdata(pdev, NULL);
1506
1507 free_netdev(netdev);
1508}
1509
1510static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1511{
1512 struct net_device *netdev = adapter->netdev;
1513
1514 netif_device_detach(netdev);
1515
1516 netxen_cancel_fw_work(adapter);
1517
1518 if (netif_running(netdev))
1519 netxen_nic_down(adapter, netdev);
1520
1521 cancel_work_sync(&adapter->tx_timeout_task);
1522
1523 netxen_nic_detach(adapter);
1524
1525 if (adapter->portnum == 0)
1526 netxen_free_dummy_dma(adapter);
1527
1528 nx_decr_dev_ref_cnt(adapter);
1529
1530 clear_bit(__NX_RESETTING, &adapter->state);
1531}
1532
1533static int netxen_nic_attach_func(struct pci_dev *pdev)
1534{
1535 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1536 struct net_device *netdev = adapter->netdev;
1537 int err;
1538
1539 err = pci_enable_device(pdev);
1540 if (err)
1541 return err;
1542
1543 pci_set_power_state(pdev, PCI_D0);
1544 pci_set_master(pdev);
1545 pci_restore_state(pdev);
1546
1547 adapter->ahw.crb_win = -1;
1548 adapter->ahw.ocm_win = -1;
1549
1550 err = netxen_start_firmware(adapter);
1551 if (err) {
1552 dev_err(&pdev->dev, "failed to start firmware\n");
1553 return err;
1554 }
1555
1556 if (netif_running(netdev)) {
1557 err = netxen_nic_attach(adapter);
1558 if (err)
1559 goto err_out;
1560
1561 err = netxen_nic_up(adapter, netdev);
1562 if (err)
1563 goto err_out_detach;
1564
1565 netxen_config_indev_addr(netdev, NETDEV_UP);
1566 }
1567
1568 netif_device_attach(netdev);
1569 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1570 return 0;
1571
1572err_out_detach:
1573 netxen_nic_detach(adapter);
1574err_out:
1575 nx_decr_dev_ref_cnt(adapter);
1576 return err;
1577}
1578
1579static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1580 pci_channel_state_t state)
1581{
1582 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1583
1584 if (state == pci_channel_io_perm_failure)
1585 return PCI_ERS_RESULT_DISCONNECT;
1586
1587 if (nx_dev_request_aer(adapter))
1588 return PCI_ERS_RESULT_RECOVERED;
1589
1590 netxen_nic_detach_func(adapter);
1591
1592 pci_disable_device(pdev);
1593
1594 return PCI_ERS_RESULT_NEED_RESET;
1595}
1596
1597static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1598{
1599 int err = 0;
1600
1601 err = netxen_nic_attach_func(pdev);
1602
1603 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1604}
1605
1606static void netxen_io_resume(struct pci_dev *pdev)
1607{
1608 pci_cleanup_aer_uncorrect_error_status(pdev);
1609}
1610
1611static void netxen_nic_shutdown(struct pci_dev *pdev)
1612{
1613 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1614
1615 netxen_nic_detach_func(adapter);
1616
1617 if (pci_save_state(pdev))
1618 return;
1619
1620 if (netxen_nic_wol_supported(adapter)) {
1621 pci_enable_wake(pdev, PCI_D3cold, 1);
1622 pci_enable_wake(pdev, PCI_D3hot, 1);
1623 }
1624
1625 pci_disable_device(pdev);
1626}
1627
1628#ifdef CONFIG_PM
1629static int
1630netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1631{
1632 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1633 int retval;
1634
1635 netxen_nic_detach_func(adapter);
1636
1637 retval = pci_save_state(pdev);
1638 if (retval)
1639 return retval;
1640
1641 if (netxen_nic_wol_supported(adapter)) {
1642 pci_enable_wake(pdev, PCI_D3cold, 1);
1643 pci_enable_wake(pdev, PCI_D3hot, 1);
1644 }
1645
1646 pci_disable_device(pdev);
1647 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1648
1649 return 0;
1650}
1651
1652static int
1653netxen_nic_resume(struct pci_dev *pdev)
1654{
1655 return netxen_nic_attach_func(pdev);
1656}
1657#endif
1658
1659static int netxen_nic_open(struct net_device *netdev)
1660{
1661 struct netxen_adapter *adapter = netdev_priv(netdev);
1662 int err = 0;
1663
1664 if (adapter->driver_mismatch)
1665 return -EIO;
1666
1667 err = netxen_nic_attach(adapter);
1668 if (err)
1669 return err;
1670
1671 err = __netxen_nic_up(adapter, netdev);
1672 if (err)
1673 goto err_out;
1674
1675 netif_start_queue(netdev);
1676
1677 return 0;
1678
1679err_out:
1680 netxen_nic_detach(adapter);
1681 return err;
1682}
1683
1684/*
1685 * netxen_nic_close - Disables a network interface entry point
1686 */
1687static int netxen_nic_close(struct net_device *netdev)
1688{
1689 struct netxen_adapter *adapter = netdev_priv(netdev);
1690
1691 __netxen_nic_down(adapter, netdev);
1692 return 0;
1693}
1694
1695static void
1696netxen_tso_check(struct net_device *netdev,
1697 struct nx_host_tx_ring *tx_ring,
1698 struct cmd_desc_type0 *first_desc,
1699 struct sk_buff *skb)
1700{
1701 u8 opcode = TX_ETHER_PKT;
1702 __be16 protocol = skb->protocol;
1703 u16 flags = 0, vid = 0;
1704 u32 producer;
1705 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1706 struct cmd_desc_type0 *hwdesc;
1707 struct vlan_ethhdr *vh;
1708
1709 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1710
1711 vh = (struct vlan_ethhdr *)skb->data;
1712 protocol = vh->h_vlan_encapsulated_proto;
1713 flags = FLAGS_VLAN_TAGGED;
1714
1715 } else if (vlan_tx_tag_present(skb)) {
1716
1717 flags = FLAGS_VLAN_OOB;
1718 vid = vlan_tx_tag_get(skb);
1719 netxen_set_tx_vlan_tci(first_desc, vid);
1720 vlan_oob = 1;
1721 }
1722
1723 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1724 skb_shinfo(skb)->gso_size > 0) {
1725
1726 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1727
1728 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1729 first_desc->total_hdr_length = hdr_len;
1730 if (vlan_oob) {
1731 first_desc->total_hdr_length += VLAN_HLEN;
1732 first_desc->tcp_hdr_offset = VLAN_HLEN;
1733 first_desc->ip_hdr_offset = VLAN_HLEN;
1734 /* Only in case of TSO on vlan device */
1735 flags |= FLAGS_VLAN_TAGGED;
1736 }
1737
1738 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1739 TX_TCP_LSO6 : TX_TCP_LSO;
1740 tso = 1;
1741
1742 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1743 u8 l4proto;
1744
1745 if (protocol == cpu_to_be16(ETH_P_IP)) {
1746 l4proto = ip_hdr(skb)->protocol;
1747
1748 if (l4proto == IPPROTO_TCP)
1749 opcode = TX_TCP_PKT;
1750 else if(l4proto == IPPROTO_UDP)
1751 opcode = TX_UDP_PKT;
1752 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1753 l4proto = ipv6_hdr(skb)->nexthdr;
1754
1755 if (l4proto == IPPROTO_TCP)
1756 opcode = TX_TCPV6_PKT;
1757 else if(l4proto == IPPROTO_UDP)
1758 opcode = TX_UDPV6_PKT;
1759 }
1760 }
1761
1762 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1763 first_desc->ip_hdr_offset += skb_network_offset(skb);
1764 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1765
1766 if (!tso)
1767 return;
1768
1769 /* For LSO, we need to copy the MAC/IP/TCP headers into
1770 * the descriptor ring
1771 */
1772 producer = tx_ring->producer;
1773 copied = 0;
1774 offset = 2;
1775
1776 if (vlan_oob) {
1777 /* Create a TSO vlan header template for firmware */
1778
1779 hwdesc = &tx_ring->desc_head[producer];
1780 tx_ring->cmd_buf_arr[producer].skb = NULL;
1781
1782 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1783 hdr_len + VLAN_HLEN);
1784
1785 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1786 skb_copy_from_linear_data(skb, vh, 12);
1787 vh->h_vlan_proto = htons(ETH_P_8021Q);
1788 vh->h_vlan_TCI = htons(vid);
1789 skb_copy_from_linear_data_offset(skb, 12,
1790 (char *)vh + 16, copy_len - 16);
1791
1792 copied = copy_len - VLAN_HLEN;
1793 offset = 0;
1794
1795 producer = get_next_index(producer, tx_ring->num_desc);
1796 }
1797
1798 while (copied < hdr_len) {
1799
1800 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1801 (hdr_len - copied));
1802
1803 hwdesc = &tx_ring->desc_head[producer];
1804 tx_ring->cmd_buf_arr[producer].skb = NULL;
1805
1806 skb_copy_from_linear_data_offset(skb, copied,
1807 (char *)hwdesc + offset, copy_len);
1808
1809 copied += copy_len;
1810 offset = 0;
1811
1812 producer = get_next_index(producer, tx_ring->num_desc);
1813 }
1814
1815 tx_ring->producer = producer;
1816 barrier();
1817}
1818
1819static int
1820netxen_map_tx_skb(struct pci_dev *pdev,
1821 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1822{
1823 struct netxen_skb_frag *nf;
1824 struct skb_frag_struct *frag;
1825 int i, nr_frags;
1826 dma_addr_t map;
1827
1828 nr_frags = skb_shinfo(skb)->nr_frags;
1829 nf = &pbuf->frag_array[0];
1830
1831 map = pci_map_single(pdev, skb->data,
1832 skb_headlen(skb), PCI_DMA_TODEVICE);
1833 if (pci_dma_mapping_error(pdev, map))
1834 goto out_err;
1835
1836 nf->dma = map;
1837 nf->length = skb_headlen(skb);
1838
1839 for (i = 0; i < nr_frags; i++) {
1840 frag = &skb_shinfo(skb)->frags[i];
1841 nf = &pbuf->frag_array[i+1];
1842
1843 map = pci_map_page(pdev, frag->page, frag->page_offset,
1844 frag->size, PCI_DMA_TODEVICE);
1845 if (pci_dma_mapping_error(pdev, map))
1846 goto unwind;
1847
1848 nf->dma = map;
1849 nf->length = frag->size;
1850 }
1851
1852 return 0;
1853
1854unwind:
1855 while (--i >= 0) {
1856 nf = &pbuf->frag_array[i+1];
1857 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1858 }
1859
1860 nf = &pbuf->frag_array[0];
1861 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1862
1863out_err:
1864 return -ENOMEM;
1865}
1866
1867static inline void
1868netxen_clear_cmddesc(u64 *desc)
1869{
1870 desc[0] = 0ULL;
1871 desc[2] = 0ULL;
1872}
1873
1874static netdev_tx_t
1875netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1876{
1877 struct netxen_adapter *adapter = netdev_priv(netdev);
1878 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1879 struct netxen_cmd_buffer *pbuf;
1880 struct netxen_skb_frag *buffrag;
1881 struct cmd_desc_type0 *hwdesc, *first_desc;
1882 struct pci_dev *pdev;
1883 int i, k;
1884 int delta = 0;
1885 struct skb_frag_struct *frag;
1886
1887 u32 producer;
1888 int frag_count, no_of_desc;
1889 u32 num_txd = tx_ring->num_desc;
1890
1891 frag_count = skb_shinfo(skb)->nr_frags + 1;
1892
1893 /* 14 frags supported for normal packet and
1894 * 32 frags supported for TSO packet
1895 */
1896 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
1897
1898 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
1899 frag = &skb_shinfo(skb)->frags[i];
1900 delta += frag->size;
1901 }
1902
1903 if (!__pskb_pull_tail(skb, delta))
1904 goto drop_packet;
1905
1906 frag_count = 1 + skb_shinfo(skb)->nr_frags;
1907 }
1908 /* 4 fragments per cmd des */
1909 no_of_desc = (frag_count + 3) >> 2;
1910
1911 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1912 netif_stop_queue(netdev);
1913 smp_mb();
1914 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1915 netif_start_queue(netdev);
1916 else
1917 return NETDEV_TX_BUSY;
1918 }
1919
1920 producer = tx_ring->producer;
1921 pbuf = &tx_ring->cmd_buf_arr[producer];
1922
1923 pdev = adapter->pdev;
1924
1925 if (netxen_map_tx_skb(pdev, skb, pbuf))
1926 goto drop_packet;
1927
1928 pbuf->skb = skb;
1929 pbuf->frag_count = frag_count;
1930
1931 first_desc = hwdesc = &tx_ring->desc_head[producer];
1932 netxen_clear_cmddesc((u64 *)hwdesc);
1933
1934 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1935 netxen_set_tx_port(first_desc, adapter->portnum);
1936
1937 for (i = 0; i < frag_count; i++) {
1938
1939 k = i % 4;
1940
1941 if ((k == 0) && (i > 0)) {
1942 /* move to next desc.*/
1943 producer = get_next_index(producer, num_txd);
1944 hwdesc = &tx_ring->desc_head[producer];
1945 netxen_clear_cmddesc((u64 *)hwdesc);
1946 tx_ring->cmd_buf_arr[producer].skb = NULL;
1947 }
1948
1949 buffrag = &pbuf->frag_array[i];
1950
1951 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1952 switch (k) {
1953 case 0:
1954 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1955 break;
1956 case 1:
1957 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1958 break;
1959 case 2:
1960 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1961 break;
1962 case 3:
1963 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1964 break;
1965 }
1966 }
1967
1968 tx_ring->producer = get_next_index(producer, num_txd);
1969
1970 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1971
1972 adapter->stats.txbytes += skb->len;
1973 adapter->stats.xmitcalled++;
1974
1975 netxen_nic_update_cmd_producer(adapter, tx_ring);
1976
1977 return NETDEV_TX_OK;
1978
1979drop_packet:
1980 adapter->stats.txdropped++;
1981 dev_kfree_skb_any(skb);
1982 return NETDEV_TX_OK;
1983}
1984
1985static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1986{
1987 struct net_device *netdev = adapter->netdev;
1988 uint32_t temp, temp_state, temp_val;
1989 int rv = 0;
1990
1991 temp = NXRD32(adapter, CRB_TEMP_STATE);
1992
1993 temp_state = nx_get_temp_state(temp);
1994 temp_val = nx_get_temp_val(temp);
1995
1996 if (temp_state == NX_TEMP_PANIC) {
1997 printk(KERN_ALERT
1998 "%s: Device temperature %d degrees C exceeds"
1999 " maximum allowed. Hardware has been shut down.\n",
2000 netdev->name, temp_val);
2001 rv = 1;
2002 } else if (temp_state == NX_TEMP_WARN) {
2003 if (adapter->temp == NX_TEMP_NORMAL) {
2004 printk(KERN_ALERT
2005 "%s: Device temperature %d degrees C "
2006 "exceeds operating range."
2007 " Immediate action needed.\n",
2008 netdev->name, temp_val);
2009 }
2010 } else {
2011 if (adapter->temp == NX_TEMP_WARN) {
2012 printk(KERN_INFO
2013 "%s: Device temperature is now %d degrees C"
2014 " in normal range.\n", netdev->name,
2015 temp_val);
2016 }
2017 }
2018 adapter->temp = temp_state;
2019 return rv;
2020}
2021
2022void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2023{
2024 struct net_device *netdev = adapter->netdev;
2025
2026 if (adapter->ahw.linkup && !linkup) {
2027 printk(KERN_INFO "%s: %s NIC Link is down\n",
2028 netxen_nic_driver_name, netdev->name);
2029 adapter->ahw.linkup = 0;
2030 if (netif_running(netdev)) {
2031 netif_carrier_off(netdev);
2032 netif_stop_queue(netdev);
2033 }
2034 adapter->link_changed = !adapter->has_link_events;
2035 } else if (!adapter->ahw.linkup && linkup) {
2036 printk(KERN_INFO "%s: %s NIC Link is up\n",
2037 netxen_nic_driver_name, netdev->name);
2038 adapter->ahw.linkup = 1;
2039 if (netif_running(netdev)) {
2040 netif_carrier_on(netdev);
2041 netif_wake_queue(netdev);
2042 }
2043 adapter->link_changed = !adapter->has_link_events;
2044 }
2045}
2046
2047static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2048{
2049 u32 val, port, linkup;
2050
2051 port = adapter->physical_port;
2052
2053 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2054 val = NXRD32(adapter, CRB_XG_STATE_P3);
2055 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2056 linkup = (val == XG_LINK_UP_P3);
2057 } else {
2058 val = NXRD32(adapter, CRB_XG_STATE);
2059 val = (val >> port*8) & 0xff;
2060 linkup = (val == XG_LINK_UP);
2061 }
2062
2063 netxen_advert_link_change(adapter, linkup);
2064}
2065
2066static void netxen_tx_timeout(struct net_device *netdev)
2067{
2068 struct netxen_adapter *adapter = netdev_priv(netdev);
2069
2070 if (test_bit(__NX_RESETTING, &adapter->state))
2071 return;
2072
2073 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2074 schedule_work(&adapter->tx_timeout_task);
2075}
2076
2077static void netxen_tx_timeout_task(struct work_struct *work)
2078{
2079 struct netxen_adapter *adapter =
2080 container_of(work, struct netxen_adapter, tx_timeout_task);
2081
2082 if (!netif_running(adapter->netdev))
2083 return;
2084
2085 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2086 return;
2087
2088 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2089 goto request_reset;
2090
2091 rtnl_lock();
2092 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2093 /* try to scrub interrupt */
2094 netxen_napi_disable(adapter);
2095
2096 netxen_napi_enable(adapter);
2097
2098 netif_wake_queue(adapter->netdev);
2099
2100 clear_bit(__NX_RESETTING, &adapter->state);
2101 } else {
2102 clear_bit(__NX_RESETTING, &adapter->state);
2103 if (netxen_nic_reset_context(adapter)) {
2104 rtnl_unlock();
2105 goto request_reset;
2106 }
2107 }
2108 adapter->netdev->trans_start = jiffies;
2109 rtnl_unlock();
2110 return;
2111
2112request_reset:
2113 adapter->need_fw_reset = 1;
2114 clear_bit(__NX_RESETTING, &adapter->state);
2115}
2116
2117static struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
2118{
2119 struct netxen_adapter *adapter = netdev_priv(netdev);
2120 struct net_device_stats *stats = &netdev->stats;
2121
2122 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2123 stats->tx_packets = adapter->stats.xmitfinished;
2124 stats->rx_bytes = adapter->stats.rxbytes;
2125 stats->tx_bytes = adapter->stats.txbytes;
2126 stats->rx_dropped = adapter->stats.rxdropped;
2127 stats->tx_dropped = adapter->stats.txdropped;
2128
2129 return stats;
2130}
2131
2132static irqreturn_t netxen_intr(int irq, void *data)
2133{
2134 struct nx_host_sds_ring *sds_ring = data;
2135 struct netxen_adapter *adapter = sds_ring->adapter;
2136 u32 status = 0;
2137
2138 status = readl(adapter->isr_int_vec);
2139
2140 if (!(status & adapter->int_vec_bit))
2141 return IRQ_NONE;
2142
2143 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2144 /* check interrupt state machine, to be sure */
2145 status = readl(adapter->crb_int_state_reg);
2146 if (!ISR_LEGACY_INT_TRIGGERED(status))
2147 return IRQ_NONE;
2148
2149 } else {
2150 unsigned long our_int = 0;
2151
2152 our_int = readl(adapter->crb_int_state_reg);
2153
2154 /* not our interrupt */
2155 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2156 return IRQ_NONE;
2157
2158 /* claim interrupt */
2159 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2160
2161 /* clear interrupt */
2162 netxen_nic_disable_int(sds_ring);
2163 }
2164
2165 writel(0xffffffff, adapter->tgt_status_reg);
2166 /* read twice to ensure write is flushed */
2167 readl(adapter->isr_int_vec);
2168 readl(adapter->isr_int_vec);
2169
2170 napi_schedule(&sds_ring->napi);
2171
2172 return IRQ_HANDLED;
2173}
2174
2175static irqreturn_t netxen_msi_intr(int irq, void *data)
2176{
2177 struct nx_host_sds_ring *sds_ring = data;
2178 struct netxen_adapter *adapter = sds_ring->adapter;
2179
2180 /* clear interrupt */
2181 writel(0xffffffff, adapter->tgt_status_reg);
2182
2183 napi_schedule(&sds_ring->napi);
2184 return IRQ_HANDLED;
2185}
2186
2187static irqreturn_t netxen_msix_intr(int irq, void *data)
2188{
2189 struct nx_host_sds_ring *sds_ring = data;
2190
2191 napi_schedule(&sds_ring->napi);
2192 return IRQ_HANDLED;
2193}
2194
2195static int netxen_nic_poll(struct napi_struct *napi, int budget)
2196{
2197 struct nx_host_sds_ring *sds_ring =
2198 container_of(napi, struct nx_host_sds_ring, napi);
2199
2200 struct netxen_adapter *adapter = sds_ring->adapter;
2201
2202 int tx_complete;
2203 int work_done;
2204
2205 tx_complete = netxen_process_cmd_ring(adapter);
2206
2207 work_done = netxen_process_rcv_ring(sds_ring, budget);
2208
2209 if ((work_done < budget) && tx_complete) {
2210 napi_complete(&sds_ring->napi);
2211 if (test_bit(__NX_DEV_UP, &adapter->state))
2212 netxen_nic_enable_int(sds_ring);
2213 }
2214
2215 return work_done;
2216}
2217
2218#ifdef CONFIG_NET_POLL_CONTROLLER
2219static void netxen_nic_poll_controller(struct net_device *netdev)
2220{
2221 int ring;
2222 struct nx_host_sds_ring *sds_ring;
2223 struct netxen_adapter *adapter = netdev_priv(netdev);
2224 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2225
2226 disable_irq(adapter->irq);
2227 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2228 sds_ring = &recv_ctx->sds_rings[ring];
2229 netxen_intr(adapter->irq, sds_ring);
2230 }
2231 enable_irq(adapter->irq);
2232}
2233#endif
2234
2235static int
2236nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2237{
2238 int count;
2239 if (netxen_api_lock(adapter))
2240 return -EIO;
2241
2242 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2243
2244 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2245
2246 netxen_api_unlock(adapter);
2247 return count;
2248}
2249
2250static int
2251nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2252{
2253 int count;
2254 if (netxen_api_lock(adapter))
2255 return -EIO;
2256
2257 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2258 WARN_ON(count == 0);
2259
2260 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2261
2262 if (count == 0)
2263 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2264
2265 netxen_api_unlock(adapter);
2266 return count;
2267}
2268
2269static int
2270nx_dev_request_aer(struct netxen_adapter *adapter)
2271{
2272 u32 state;
2273 int ret = -EINVAL;
2274
2275 if (netxen_api_lock(adapter))
2276 return ret;
2277
2278 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2279
2280 if (state == NX_DEV_NEED_AER)
2281 ret = 0;
2282 else if (state == NX_DEV_READY) {
2283 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2284 ret = 0;
2285 }
2286
2287 netxen_api_unlock(adapter);
2288 return ret;
2289}
2290
2291static int
2292nx_dev_request_reset(struct netxen_adapter *adapter)
2293{
2294 u32 state;
2295 int ret = -EINVAL;
2296
2297 if (netxen_api_lock(adapter))
2298 return ret;
2299
2300 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2301
2302 if (state == NX_DEV_NEED_RESET)
2303 ret = 0;
2304 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2305 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2306 ret = 0;
2307 }
2308
2309 netxen_api_unlock(adapter);
2310
2311 return ret;
2312}
2313
2314static int
2315netxen_can_start_firmware(struct netxen_adapter *adapter)
2316{
2317 int count;
2318 int can_start = 0;
2319
2320 if (netxen_api_lock(adapter))
2321 return 0;
2322
2323 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2324
2325 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2326 count = 0;
2327
2328 if (count == 0) {
2329 can_start = 1;
2330 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2331 }
2332
2333 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2334
2335 netxen_api_unlock(adapter);
2336
2337 return can_start;
2338}
2339
2340static void
2341netxen_schedule_work(struct netxen_adapter *adapter,
2342 work_func_t func, int delay)
2343{
2344 INIT_DELAYED_WORK(&adapter->fw_work, func);
2345 schedule_delayed_work(&adapter->fw_work, delay);
2346}
2347
2348static void
2349netxen_cancel_fw_work(struct netxen_adapter *adapter)
2350{
2351 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2352 msleep(10);
2353
2354 cancel_delayed_work_sync(&adapter->fw_work);
2355}
2356
2357static void
2358netxen_attach_work(struct work_struct *work)
2359{
2360 struct netxen_adapter *adapter = container_of(work,
2361 struct netxen_adapter, fw_work.work);
2362 struct net_device *netdev = adapter->netdev;
2363 int err = 0;
2364
2365 if (netif_running(netdev)) {
2366 err = netxen_nic_attach(adapter);
2367 if (err)
2368 goto done;
2369
2370 err = netxen_nic_up(adapter, netdev);
2371 if (err) {
2372 netxen_nic_detach(adapter);
2373 goto done;
2374 }
2375
2376 netxen_config_indev_addr(netdev, NETDEV_UP);
2377 }
2378
2379 netif_device_attach(netdev);
2380
2381done:
2382 adapter->fw_fail_cnt = 0;
2383 clear_bit(__NX_RESETTING, &adapter->state);
2384 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2385}
2386
2387static void
2388netxen_fwinit_work(struct work_struct *work)
2389{
2390 struct netxen_adapter *adapter = container_of(work,
2391 struct netxen_adapter, fw_work.work);
2392 int dev_state;
2393
2394 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2395
2396 switch (dev_state) {
2397 case NX_DEV_COLD:
2398 case NX_DEV_READY:
2399 if (!netxen_start_firmware(adapter)) {
2400 netxen_schedule_work(adapter, netxen_attach_work, 0);
2401 return;
2402 }
2403 break;
2404
2405 case NX_DEV_NEED_RESET:
2406 case NX_DEV_INITALIZING:
2407 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2408 netxen_schedule_work(adapter,
2409 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2410 return;
2411 }
2412
2413 case NX_DEV_FAILED:
2414 default:
2415 nx_incr_dev_ref_cnt(adapter);
2416 break;
2417 }
2418
2419 clear_bit(__NX_RESETTING, &adapter->state);
2420}
2421
2422static void
2423netxen_detach_work(struct work_struct *work)
2424{
2425 struct netxen_adapter *adapter = container_of(work,
2426 struct netxen_adapter, fw_work.work);
2427 struct net_device *netdev = adapter->netdev;
2428 int ref_cnt, delay;
2429 u32 status;
2430
2431 netif_device_detach(netdev);
2432
2433 netxen_nic_down(adapter, netdev);
2434
2435 rtnl_lock();
2436 netxen_nic_detach(adapter);
2437 rtnl_unlock();
2438
2439 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2440
2441 if (status & NX_RCODE_FATAL_ERROR)
2442 goto err_ret;
2443
2444 if (adapter->temp == NX_TEMP_PANIC)
2445 goto err_ret;
2446
2447 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2448
2449 if (ref_cnt == -EIO)
2450 goto err_ret;
2451
2452 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2453
2454 adapter->fw_wait_cnt = 0;
2455 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2456
2457 return;
2458
2459err_ret:
2460 clear_bit(__NX_RESETTING, &adapter->state);
2461}
2462
2463static int
2464netxen_check_health(struct netxen_adapter *adapter)
2465{
2466 u32 state, heartbit;
2467 struct net_device *netdev = adapter->netdev;
2468
2469 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2470 if (state == NX_DEV_NEED_AER)
2471 return 0;
2472
2473 if (netxen_nic_check_temp(adapter))
2474 goto detach;
2475
2476 if (adapter->need_fw_reset) {
2477 if (nx_dev_request_reset(adapter))
2478 return 0;
2479 goto detach;
2480 }
2481
2482 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2483 * 1. Tx timeout 2. Fw hang
2484 * Send request to destroy context in case of tx timeout only
2485 * and doesn't required in case of Fw hang
2486 */
2487 if (state == NX_DEV_NEED_RESET) {
2488 adapter->need_fw_reset = 1;
2489 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2490 goto detach;
2491 }
2492
2493 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2494 return 0;
2495
2496 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2497 if (heartbit != adapter->heartbit) {
2498 adapter->heartbit = heartbit;
2499 adapter->fw_fail_cnt = 0;
2500 if (adapter->need_fw_reset)
2501 goto detach;
2502 return 0;
2503 }
2504
2505 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2506 return 0;
2507
2508 if (nx_dev_request_reset(adapter))
2509 return 0;
2510
2511 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2512
2513 dev_info(&netdev->dev, "firmware hang detected\n");
2514
2515detach:
2516 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2517 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2518 netxen_schedule_work(adapter, netxen_detach_work, 0);
2519 return 1;
2520}
2521
2522static void
2523netxen_fw_poll_work(struct work_struct *work)
2524{
2525 struct netxen_adapter *adapter = container_of(work,
2526 struct netxen_adapter, fw_work.work);
2527
2528 if (test_bit(__NX_RESETTING, &adapter->state))
2529 goto reschedule;
2530
2531 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2532 if (!adapter->has_link_events) {
2533
2534 netxen_nic_handle_phy_intr(adapter);
2535
2536 if (adapter->link_changed)
2537 netxen_nic_set_link_parameters(adapter);
2538 }
2539 }
2540
2541 if (netxen_check_health(adapter))
2542 return;
2543
2544reschedule:
2545 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2546}
2547
2548static ssize_t
2549netxen_store_bridged_mode(struct device *dev,
2550 struct device_attribute *attr, const char *buf, size_t len)
2551{
2552 struct net_device *net = to_net_dev(dev);
2553 struct netxen_adapter *adapter = netdev_priv(net);
2554 unsigned long new;
2555 int ret = -EINVAL;
2556
2557 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2558 goto err_out;
2559
2560 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2561 goto err_out;
2562
2563 if (strict_strtoul(buf, 2, &new))
2564 goto err_out;
2565
2566 if (!netxen_config_bridged_mode(adapter, !!new))
2567 ret = len;
2568
2569err_out:
2570 return ret;
2571}
2572
2573static ssize_t
2574netxen_show_bridged_mode(struct device *dev,
2575 struct device_attribute *attr, char *buf)
2576{
2577 struct net_device *net = to_net_dev(dev);
2578 struct netxen_adapter *adapter;
2579 int bridged_mode = 0;
2580
2581 adapter = netdev_priv(net);
2582
2583 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2584 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2585
2586 return sprintf(buf, "%d\n", bridged_mode);
2587}
2588
2589static struct device_attribute dev_attr_bridged_mode = {
2590 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2591 .show = netxen_show_bridged_mode,
2592 .store = netxen_store_bridged_mode,
2593};
2594
2595static ssize_t
2596netxen_store_diag_mode(struct device *dev,
2597 struct device_attribute *attr, const char *buf, size_t len)
2598{
2599 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2600 unsigned long new;
2601
2602 if (strict_strtoul(buf, 2, &new))
2603 return -EINVAL;
2604
2605 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2606 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2607
2608 return len;
2609}
2610
2611static ssize_t
2612netxen_show_diag_mode(struct device *dev,
2613 struct device_attribute *attr, char *buf)
2614{
2615 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2616
2617 return sprintf(buf, "%d\n",
2618 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2619}
2620
2621static struct device_attribute dev_attr_diag_mode = {
2622 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2623 .show = netxen_show_diag_mode,
2624 .store = netxen_store_diag_mode,
2625};
2626
2627static int
2628netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2629 loff_t offset, size_t size)
2630{
2631 size_t crb_size = 4;
2632
2633 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2634 return -EIO;
2635
2636 if (offset < NETXEN_PCI_CRBSPACE) {
2637 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2638 return -EINVAL;
2639
2640 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2641 NETXEN_PCI_CAMQM_2M_END))
2642 crb_size = 8;
2643 else
2644 return -EINVAL;
2645 }
2646
2647 if ((size != crb_size) || (offset & (crb_size-1)))
2648 return -EINVAL;
2649
2650 return 0;
2651}
2652
2653static ssize_t
2654netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2655 struct bin_attribute *attr,
2656 char *buf, loff_t offset, size_t size)
2657{
2658 struct device *dev = container_of(kobj, struct device, kobj);
2659 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2660 u32 data;
2661 u64 qmdata;
2662 int ret;
2663
2664 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2665 if (ret != 0)
2666 return ret;
2667
2668 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2669 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2670 NETXEN_PCI_CAMQM_2M_END)) {
2671 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2672 memcpy(buf, &qmdata, size);
2673 } else {
2674 data = NXRD32(adapter, offset);
2675 memcpy(buf, &data, size);
2676 }
2677
2678 return size;
2679}
2680
2681static ssize_t
2682netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2683 struct bin_attribute *attr,
2684 char *buf, loff_t offset, size_t size)
2685{
2686 struct device *dev = container_of(kobj, struct device, kobj);
2687 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2688 u32 data;
2689 u64 qmdata;
2690 int ret;
2691
2692 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2693 if (ret != 0)
2694 return ret;
2695
2696 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2697 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2698 NETXEN_PCI_CAMQM_2M_END)) {
2699 memcpy(&qmdata, buf, size);
2700 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2701 } else {
2702 memcpy(&data, buf, size);
2703 NXWR32(adapter, offset, data);
2704 }
2705
2706 return size;
2707}
2708
2709static int
2710netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2711 loff_t offset, size_t size)
2712{
2713 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2714 return -EIO;
2715
2716 if ((size != 8) || (offset & 0x7))
2717 return -EIO;
2718
2719 return 0;
2720}
2721
2722static ssize_t
2723netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2724 struct bin_attribute *attr,
2725 char *buf, loff_t offset, size_t size)
2726{
2727 struct device *dev = container_of(kobj, struct device, kobj);
2728 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2729 u64 data;
2730 int ret;
2731
2732 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2733 if (ret != 0)
2734 return ret;
2735
2736 if (adapter->pci_mem_read(adapter, offset, &data))
2737 return -EIO;
2738
2739 memcpy(buf, &data, size);
2740
2741 return size;
2742}
2743
2744static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2745 struct bin_attribute *attr, char *buf,
2746 loff_t offset, size_t size)
2747{
2748 struct device *dev = container_of(kobj, struct device, kobj);
2749 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2750 u64 data;
2751 int ret;
2752
2753 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2754 if (ret != 0)
2755 return ret;
2756
2757 memcpy(&data, buf, size);
2758
2759 if (adapter->pci_mem_write(adapter, offset, data))
2760 return -EIO;
2761
2762 return size;
2763}
2764
2765
2766static struct bin_attribute bin_attr_crb = {
2767 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2768 .size = 0,
2769 .read = netxen_sysfs_read_crb,
2770 .write = netxen_sysfs_write_crb,
2771};
2772
2773static struct bin_attribute bin_attr_mem = {
2774 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2775 .size = 0,
2776 .read = netxen_sysfs_read_mem,
2777 .write = netxen_sysfs_write_mem,
2778};
2779
2780
2781static void
2782netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2783{
2784 struct net_device *netdev = adapter->netdev;
2785 struct device *dev = &netdev->dev;
2786
2787 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2788 /* bridged_mode control */
2789 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2790 dev_warn(&netdev->dev,
2791 "failed to create bridged_mode sysfs entry\n");
2792 }
2793 }
2794}
2795
2796static void
2797netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2798{
2799 struct net_device *netdev = adapter->netdev;
2800 struct device *dev = &netdev->dev;
2801
2802 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2803 device_remove_file(dev, &dev_attr_bridged_mode);
2804}
2805
2806static void
2807netxen_create_diag_entries(struct netxen_adapter *adapter)
2808{
2809 struct pci_dev *pdev = adapter->pdev;
2810 struct device *dev;
2811
2812 dev = &pdev->dev;
2813 if (device_create_file(dev, &dev_attr_diag_mode))
2814 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2815 if (device_create_bin_file(dev, &bin_attr_crb))
2816 dev_info(dev, "failed to create crb sysfs entry\n");
2817 if (device_create_bin_file(dev, &bin_attr_mem))
2818 dev_info(dev, "failed to create mem sysfs entry\n");
2819}
2820
2821
2822static void
2823netxen_remove_diag_entries(struct netxen_adapter *adapter)
2824{
2825 struct pci_dev *pdev = adapter->pdev;
2826 struct device *dev = &pdev->dev;
2827
2828 device_remove_file(dev, &dev_attr_diag_mode);
2829 device_remove_bin_file(dev, &bin_attr_crb);
2830 device_remove_bin_file(dev, &bin_attr_mem);
2831}
2832
2833#ifdef CONFIG_INET
2834
2835#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2836
2837static int
2838netxen_destip_supported(struct netxen_adapter *adapter)
2839{
2840 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2841 return 0;
2842
2843 if (adapter->ahw.cut_through)
2844 return 0;
2845
2846 return 1;
2847}
2848
2849static void
2850netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2851{
2852 struct in_device *indev;
2853 struct netxen_adapter *adapter = netdev_priv(dev);
2854
2855 if (!netxen_destip_supported(adapter))
2856 return;
2857
2858 indev = in_dev_get(dev);
2859 if (!indev)
2860 return;
2861
2862 for_ifa(indev) {
2863 switch (event) {
2864 case NETDEV_UP:
2865 netxen_config_ipaddr(adapter,
2866 ifa->ifa_address, NX_IP_UP);
2867 break;
2868 case NETDEV_DOWN:
2869 netxen_config_ipaddr(adapter,
2870 ifa->ifa_address, NX_IP_DOWN);
2871 break;
2872 default:
2873 break;
2874 }
2875 } endfor_ifa(indev);
2876
2877 in_dev_put(indev);
2878}
2879
2880static int netxen_netdev_event(struct notifier_block *this,
2881 unsigned long event, void *ptr)
2882{
2883 struct netxen_adapter *adapter;
2884 struct net_device *dev = (struct net_device *)ptr;
2885
2886recheck:
2887 if (dev == NULL)
2888 goto done;
2889
2890 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2891 dev = vlan_dev_real_dev(dev);
2892 goto recheck;
2893 }
2894
2895 if (!is_netxen_netdev(dev))
2896 goto done;
2897
2898 adapter = netdev_priv(dev);
2899
2900 if (!adapter)
2901 goto done;
2902
2903 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2904 goto done;
2905
2906 netxen_config_indev_addr(dev, event);
2907done:
2908 return NOTIFY_DONE;
2909}
2910
2911static int
2912netxen_inetaddr_event(struct notifier_block *this,
2913 unsigned long event, void *ptr)
2914{
2915 struct netxen_adapter *adapter;
2916 struct net_device *dev;
2917
2918 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2919
2920 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2921
2922recheck:
2923 if (dev == NULL || !netif_running(dev))
2924 goto done;
2925
2926 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2927 dev = vlan_dev_real_dev(dev);
2928 goto recheck;
2929 }
2930
2931 if (!is_netxen_netdev(dev))
2932 goto done;
2933
2934 adapter = netdev_priv(dev);
2935
2936 if (!adapter || !netxen_destip_supported(adapter))
2937 goto done;
2938
2939 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2940 goto done;
2941
2942 switch (event) {
2943 case NETDEV_UP:
2944 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2945 break;
2946 case NETDEV_DOWN:
2947 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2948 break;
2949 default:
2950 break;
2951 }
2952
2953done:
2954 return NOTIFY_DONE;
2955}
2956
2957static struct notifier_block netxen_netdev_cb = {
2958 .notifier_call = netxen_netdev_event,
2959};
2960
2961static struct notifier_block netxen_inetaddr_cb = {
2962 .notifier_call = netxen_inetaddr_event,
2963};
2964#else
2965static void
2966netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2967{ }
2968#endif
2969
2970static struct pci_error_handlers netxen_err_handler = {
2971 .error_detected = netxen_io_error_detected,
2972 .slot_reset = netxen_io_slot_reset,
2973 .resume = netxen_io_resume,
2974};
2975
2976static struct pci_driver netxen_driver = {
2977 .name = netxen_nic_driver_name,
2978 .id_table = netxen_pci_tbl,
2979 .probe = netxen_nic_probe,
2980 .remove = __devexit_p(netxen_nic_remove),
2981#ifdef CONFIG_PM
2982 .suspend = netxen_nic_suspend,
2983 .resume = netxen_nic_resume,
2984#endif
2985 .shutdown = netxen_nic_shutdown,
2986 .err_handler = &netxen_err_handler
2987};
2988
2989static int __init netxen_init_module(void)
2990{
2991 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2992
2993#ifdef CONFIG_INET
2994 register_netdevice_notifier(&netxen_netdev_cb);
2995 register_inetaddr_notifier(&netxen_inetaddr_cb);
2996#endif
2997 return pci_register_driver(&netxen_driver);
2998}
2999
3000module_init(netxen_init_module);
3001
3002static void __exit netxen_exit_module(void)
3003{
3004 pci_unregister_driver(&netxen_driver);
3005
3006#ifdef CONFIG_INET
3007 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3008 unregister_netdevice_notifier(&netxen_netdev_cb);
3009#endif
3010}
3011
3012module_exit(netxen_exit_module);