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netxen: to fix onchip memory access.
[linux-2.6-block.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1 1/*
5d242f1c 2 * Copyright (C) 2003 - 2009 NetXen, Inc.
13af7a6e 3 * Copyright (C) 2009 - QLogic Corporation.
3d396eb1 4 * All rights reserved.
80922fbc 5 *
3d396eb1
AK		 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.
80922fbc 10 *
3d396eb1
AK		 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.
80922fbc 15 *
3d396eb1
AK		 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.
80922fbc 20 *
3d396eb1 21 * The full GNU General Public License is included in this distribution
4d21fef4 22 * in the file called "COPYING".
80922fbc 23 *
3d396eb1
AK		 24 */
25
5a0e3ad6 26#include <linux/slab.h>
cb8011ad 27#include <linux/vmalloc.h>
e98e3350 28#include <linux/interrupt.h>
3d396eb1
AK		 29#include "netxen_nic_hw.h"
30
31#include "netxen_nic.h"
3d396eb1 32
1494a814 33#include <linux/dma-mapping.h>
391587c3 34#include <linux/if_vlan.h>
c9bdd4b5 35#include <net/ip.h>
00977784 36#include <linux/ipv6.h>
6598b169 37#include <linux/inetdevice.h>
0531d7b8 38#include <linux/sysfs.h>
e87ad553 39#include <linux/aer.h>
1494a814 40
c25c0b9b 41MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Converged Ethernet Driver");
3d396eb1
AK		 42MODULE_LICENSE("GPL");
43MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
7e8e5d97
DP		 44MODULE_FIRMWARE(NX_P2_MN_ROMIMAGE_NAME);
45MODULE_FIRMWARE(NX_P3_CT_ROMIMAGE_NAME);
46MODULE_FIRMWARE(NX_P3_MN_ROMIMAGE_NAME);
47MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
3d396eb1 48
ceded32f 49char netxen_nic_driver_name[] = "netxen_nic";
c25c0b9b 50static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
cb8011ad 51 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 52
2956640d
DP		 53static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
54
55/* Default to restricted 1G auto-neg mode */
56static int wol_port_mode = 5;
57
58static int use_msi = 1;
59
60static int use_msi_x = 1;
61
afdafff1
SH		 62static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
63module_param(auto_fw_reset, int, 0644);
64MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
caa2dd53 65
3d396eb1 66static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 67 const struct pci_device_id *ent);
3d396eb1
AK		 68static void __devexit netxen_nic_remove(struct pci_dev *pdev);
69static int netxen_nic_open(struct net_device *netdev);
70static int netxen_nic_close(struct net_device *netdev);
61357325
SH		 71static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
72 struct net_device *);
3d396eb1 73static void netxen_tx_timeout(struct net_device *netdev);
74c520da 74static void netxen_tx_timeout_task(struct work_struct *work);
6a581e93
DP		 75static void netxen_fw_poll_work(struct work_struct *work);
76static void netxen_schedule_work(struct netxen_adapter *adapter,
77 work_func_t func, int delay);
78static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
bea3348e 79static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 80#ifdef CONFIG_NET_POLL_CONTROLLER
81static void netxen_nic_poll_controller(struct net_device *netdev);
82#endif
fa3ce355
NK		 83
84static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
85static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
70f9cf89
DP		 86static void netxen_create_diag_entries(struct netxen_adapter *adapter);
87static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
fa3ce355 88
e87ad553 89static int nx_dev_request_aer(struct netxen_adapter *adapter);
6a581e93
DP		 90static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
91static int netxen_can_start_firmware(struct netxen_adapter *adapter);
92
1494a814 93static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 94static irqreturn_t netxen_msi_intr(int irq, void *data);
b3df68f8 95static irqreturn_t netxen_msix_intr(int irq, void *data);
3d396eb1 96
d0725e4d
AKS		 97static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
98
3d396eb1 99/* PCI Device ID Table */
70081ac5 100#define ENTRY(device) \
040dec3b 101 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 102 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
103
a3aa1884 104static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
040dec3b
DP		 105 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
106 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
107 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
108 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
109 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
110 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
111 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
112 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 113 {0,}
114};
115
116MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
117
7830b22c
DP		 118static uint32_t crb_cmd_producer[4] = {
119 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
120 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
121};
122
c9fc891f 123void
3ce06a32 124netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
cb2107be 125 struct nx_host_tx_ring *tx_ring)
3176ff3e 126{
195c5f98 127 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
cb2107be
DP		 128
129 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
130 netif_stop_queue(adapter->netdev);
131 smp_mb();
132 }
3176ff3e
MT		 133}
134
7830b22c
DP		 135static uint32_t crb_cmd_consumer[4] = {
136 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
137 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
138};
139
3ce06a32
DP		 140static inline void
141netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
cb2107be 142 struct nx_host_tx_ring *tx_ring)
3176ff3e 143{
195c5f98 144 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
3176ff3e
MT		 145}
146
2956640d 147static uint32_t msi_tgt_status[8] = {
443be796 148 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 149 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
150 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
151 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 152};
153
2956640d
DP		 154static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
155
d8b100c5 156static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 157{
d8b100c5
DP		 158 struct netxen_adapter *adapter = sds_ring->adapter;
159
195c5f98 160 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
4638aef1
SH		 161}
162
d8b100c5 163static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
4638aef1 164{
d8b100c5
DP		 165 struct netxen_adapter *adapter = sds_ring->adapter;
166
195c5f98 167 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
4638aef1 168
092bc571 169 if (!NETXEN_IS_MSI_FAMILY(adapter))
195c5f98 170 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
4638aef1
SH		 171}
172
71dcddbd
DP		 173static int
174netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
175{
176 int size = sizeof(struct nx_host_sds_ring) * count;
177
178 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
179
180 return (recv_ctx->sds_rings == NULL);
181}
182
d8b100c5 183static void
71dcddbd
DP		 184netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
185{
186 if (recv_ctx->sds_rings != NULL)
187 kfree(recv_ctx->sds_rings);
232e7d68
DP		 188
189 recv_ctx->sds_rings = NULL;
71dcddbd
DP		 190}
191
192static int
d8b100c5
DP		 193netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
194{
195 int ring;
196 struct nx_host_sds_ring *sds_ring;
197 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
198
71dcddbd 199 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
f17443f4 200 return -ENOMEM;
71dcddbd 201
d8b100c5
DP		 202 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
203 sds_ring = &recv_ctx->sds_rings[ring];
204 netif_napi_add(netdev, &sds_ring->napi,
205 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
206 }
71dcddbd
DP		 207
208 return 0;
d8b100c5
DP		 209}
210
232e7d68
DP		 211static void
212netxen_napi_del(struct netxen_adapter *adapter)
213{
214 int ring;
215 struct nx_host_sds_ring *sds_ring;
216 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
217
218 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
219 sds_ring = &recv_ctx->sds_rings[ring];
220 netif_napi_del(&sds_ring->napi);
221 }
222
223 netxen_free_sds_rings(&adapter->recv_ctx);
224}
225
d8b100c5
DP		 226static void
227netxen_napi_enable(struct netxen_adapter *adapter)
228{
229 int ring;
230 struct nx_host_sds_ring *sds_ring;
231 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
232
233 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
234 sds_ring = &recv_ctx->sds_rings[ring];
235 napi_enable(&sds_ring->napi);
236 netxen_nic_enable_int(sds_ring);
237 }
238}
239
240static void
241netxen_napi_disable(struct netxen_adapter *adapter)
242{
243 int ring;
244 struct nx_host_sds_ring *sds_ring;
245 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
246
247 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
248 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 249 netxen_nic_disable_int(sds_ring);
b2af9cb0
DP		 250 napi_synchronize(&sds_ring->napi);
251 napi_disable(&sds_ring->napi);
d8b100c5
DP		 252 }
253}
254
50c643e7 255static int nx_set_dma_mask(struct netxen_adapter *adapter)
2956640d
DP		 256{
257 struct pci_dev *pdev = adapter->pdev;
1f434f63
DP		 258 uint64_t mask, cmask;
259
260 adapter->pci_using_dac = 0;
2956640d 261
6afd142f 262 mask = DMA_BIT_MASK(32);
6afd142f 263 cmask = DMA_BIT_MASK(32);
1f434f63 264
50c643e7 265 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1f434f63 266#ifndef CONFIG_IA64
6afd142f 267 mask = DMA_BIT_MASK(35);
1f434f63 268#endif
50c643e7
DP		 269 } else {
270 mask = DMA_BIT_MASK(39);
271 cmask = mask;
272 }
273
2956640d 274 if (pci_set_dma_mask(pdev, mask) == 0 &&
1f434f63 275 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
2956640d
DP		 276 adapter->pci_using_dac = 1;
277 return 0;
278 }
2956640d 279
1f434f63
DP		 280 return -EIO;
281}
282
283/* Update addressable range if firmware supports it */
284static int
285nx_update_dma_mask(struct netxen_adapter *adapter)
286{
287 int change, shift, err;
50c643e7 288 uint64_t mask, old_mask, old_cmask;
1f434f63
DP		 289 struct pci_dev *pdev = adapter->pdev;
290
291 change = 0;
292
f98a9f69 293 shift = NXRD32(adapter, CRB_DMA_SHIFT);
f60f7856 294 if (shift > 32)
1f434f63
DP		 295 return 0;
296
297 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
298 change = 1;
299 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
300 change = 1;
301
302 if (change) {
303 old_mask = pdev->dma_mask;
50c643e7
DP		 304 old_cmask = pdev->dev.coherent_dma_mask;
305
f60f7856 306 mask = DMA_BIT_MASK(32+shift);
1f434f63
DP		 307
308 err = pci_set_dma_mask(pdev, mask);
309 if (err)
50c643e7
DP		 310 goto err_out;
311
312 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
313
314 err = pci_set_consistent_dma_mask(pdev, mask);
315 if (err)
316 goto err_out;
317 }
318 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
2956640d
DP		 319 }
320
2956640d 321 return 0;
50c643e7
DP		 322
323err_out:
324 pci_set_dma_mask(pdev, old_mask);
325 pci_set_consistent_dma_mask(pdev, old_cmask);
326 return err;
2956640d
DP		 327}
328
2956640d
DP		 329static int
330netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
331{
27c915a4 332 u32 val, timeout;
2956640d
DP		 333
334 if (first_boot == 0x55555555) {
335 /* This is the first boot after power up */
f98a9f69 336 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
27c915a4
DP		 337
338 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
339 return 0;
2956640d
DP		 340
341 /* PCI bus master workaround */
f98a9f69 342 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 343 if (!(first_boot & 0x4)) {
344 first_boot |= 0x4;
f98a9f69 345 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
581e8ae4 346 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
2956640d
DP		 347 }
348
349 /* This is the first boot after power up */
f98a9f69 350 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
2956640d
DP		 351 if (first_boot != 0x80000f) {
352 /* clear the register for future unloads/loads */
f98a9f69 353 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
27c915a4 354 return -EIO;
2956640d
DP		 355 }
356
27c915a4 357 /* Start P2 boot loader */
f98a9f69
DP		 358 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
359 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
27c915a4
DP		 360 timeout = 0;
361 do {
362 msleep(1);
f98a9f69 363 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
27c915a4
DP		 364
365 if (++timeout > 5000)
366 return -EIO;
367
368 } while (val == NETXEN_BDINFO_MAGIC);
2956640d 369 }
27c915a4 370 return 0;
2956640d
DP		 371}
372
373static void netxen_set_port_mode(struct netxen_adapter *adapter)
374{
375 u32 val, data;
376
1e2d0059 377 val = adapter->ahw.board_type;
2956640d
DP		 378 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
379 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
380 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
381 data = NETXEN_PORT_MODE_802_3_AP;
f98a9f69 382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 383 } else if (port_mode == NETXEN_PORT_MODE_XG) {
384 data = NETXEN_PORT_MODE_XG;
f98a9f69 385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 386 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
387 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
f98a9f69 388 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 389 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
390 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
f98a9f69 391 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 392 } else {
393 data = NETXEN_PORT_MODE_AUTO_NEG;
f98a9f69 394 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
2956640d
DP		 395 }
396
397 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
398 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
399 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
400 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
401 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
402 }
f98a9f69 403 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
2956640d
DP		 404 }
405}
406
2956640d
DP		 407static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
408{
409 u32 control;
410 int pos;
411
412 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
413 if (pos) {
414 pci_read_config_dword(pdev, pos, &control);
415 if (enable)
416 control |= PCI_MSIX_FLAGS_ENABLE;
417 else
418 control = 0;
419 pci_write_config_dword(pdev, pos, control);
420 }
421}
422
be339aee 423static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
2956640d
DP		 424{
425 int i;
426
be339aee 427 for (i = 0; i < count; i++)
2956640d
DP		 428 adapter->msix_entries[i].entry = i;
429}
430
9dc28efe
DP		 431static int
432netxen_read_mac_addr(struct netxen_adapter *adapter)
433{
434 int i;
435 unsigned char *p;
a03d2451 436 u64 mac_addr;
9dc28efe
DP		 437 struct net_device *netdev = adapter->netdev;
438 struct pci_dev *pdev = adapter->pdev;
439
9dc28efe
DP		 440 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
441 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
442 return -EIO;
443 } else {
444 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
445 return -EIO;
446 }
447
448 p = (unsigned char *)&mac_addr;
449 for (i = 0; i < 6; i++)
450 netdev->dev_addr[i] = *(p + 5 - i);
451
452 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
5d09e534 453 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
9dc28efe
DP		 454
455 /* set station address */
456
e174961c
JB		 457 if (!is_valid_ether_addr(netdev->perm_addr))
458 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
9dc28efe
DP		 459
460 return 0;
461}
462
3d0a3cc9
DP		 463int netxen_nic_set_mac(struct net_device *netdev, void *p)
464{
465 struct netxen_adapter *adapter = netdev_priv(netdev);
466 struct sockaddr *addr = p;
467
468 if (!is_valid_ether_addr(addr->sa_data))
469 return -EINVAL;
470
471 if (netif_running(netdev)) {
472 netif_device_detach(netdev);
473 netxen_napi_disable(adapter);
474 }
475
5d09e534 476 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
3d0a3cc9
DP		 477 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
478 adapter->macaddr_set(adapter, addr->sa_data);
479
480 if (netif_running(netdev)) {
481 netif_device_attach(netdev);
482 netxen_napi_enable(adapter);
483 }
484 return 0;
485}
486
1abd266f
SH		 487static void netxen_set_multicast_list(struct net_device *dev)
488{
489 struct netxen_adapter *adapter = netdev_priv(dev);
490
3d0a3cc9 491 adapter->set_multi(dev);
1abd266f
SH		 492}
493
494static const struct net_device_ops netxen_netdev_ops = {
495 .ndo_open = netxen_nic_open,
496 .ndo_stop = netxen_nic_close,
497 .ndo_start_xmit = netxen_nic_xmit_frame,
498 .ndo_get_stats = netxen_nic_get_stats,
499 .ndo_validate_addr = eth_validate_addr,
500 .ndo_set_multicast_list = netxen_set_multicast_list,
501 .ndo_set_mac_address = netxen_nic_set_mac,
502 .ndo_change_mtu = netxen_nic_change_mtu,
503 .ndo_tx_timeout = netxen_tx_timeout,
504#ifdef CONFIG_NET_POLL_CONTROLLER
505 .ndo_poll_controller = netxen_nic_poll_controller,
506#endif
507};
508
97daee83
DP		 509static void
510netxen_setup_intr(struct netxen_adapter *adapter)
511{
512 struct netxen_legacy_intr_set *legacy_intrp;
513 struct pci_dev *pdev = adapter->pdev;
be339aee
DP		 514 int err, num_msix;
515
516 if (adapter->rss_supported) {
517 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
518 MSIX_ENTRIES_PER_ADAPTER : 2;
519 } else
520 num_msix = 1;
521
522 adapter->max_sds_rings = 1;
97daee83
DP		 523
524 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
97daee83
DP		 525
526 if (adapter->ahw.revision_id >= NX_P3_B0)
527 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
528 else
529 legacy_intrp = &legacy_intr[0];
195c5f98
AKS		 530
531 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
532 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
533 legacy_intrp->tgt_status_reg);
534 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
535 legacy_intrp->tgt_mask_reg);
536 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
537 legacy_intrp->pci_int_reg);
538 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
539
540 if (adapter->ahw.revision_id >= NX_P3_B1)
541 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
542 ISR_INT_STATE_REG);
543 else
544 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
545 CRB_INT_VECTOR);
97daee83
DP		 546
547 netxen_set_msix_bit(pdev, 0);
548
549 if (adapter->msix_supported) {
550
be339aee
DP		 551 netxen_init_msix_entries(adapter, num_msix);
552 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
553 if (err == 0) {
554 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
555 netxen_set_msix_bit(pdev, 1);
97daee83 556
be339aee
DP		 557 if (adapter->rss_supported)
558 adapter->max_sds_rings = num_msix;
97daee83 559
be339aee
DP		 560 dev_info(&pdev->dev, "using msi-x interrupts\n");
561 return;
562 }
563
564 if (err > 0)
565 pci_disable_msix(pdev);
566
567 /* fall through for msi */
97daee83 568 }
be339aee
DP		 569
570 if (use_msi && !pci_enable_msi(pdev)) {
571 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
195c5f98
AKS		 572 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
573 msi_tgt_status[adapter->ahw.pci_func]);
be339aee 574 dev_info(&pdev->dev, "using msi interrupts\n");
f67f3408 575 adapter->msix_entries[0].vector = pdev->irq;
be339aee
DP		 576 return;
577 }
578
579 dev_info(&pdev->dev, "using legacy interrupts\n");
580 adapter->msix_entries[0].vector = pdev->irq;
97daee83
DP		 581}
582
583static void
584netxen_teardown_intr(struct netxen_adapter *adapter)
585{
586 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
587 pci_disable_msix(adapter->pdev);
588 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
589 pci_disable_msi(adapter->pdev);
590}
591
592static void
593netxen_cleanup_pci_map(struct netxen_adapter *adapter)
594{
595 if (adapter->ahw.db_base != NULL)
596 iounmap(adapter->ahw.db_base);
597 if (adapter->ahw.pci_base0 != NULL)
598 iounmap(adapter->ahw.pci_base0);
599 if (adapter->ahw.pci_base1 != NULL)
600 iounmap(adapter->ahw.pci_base1);
601 if (adapter->ahw.pci_base2 != NULL)
602 iounmap(adapter->ahw.pci_base2);
603}
604
605static int
606netxen_setup_pci_map(struct netxen_adapter *adapter)
607{
97daee83
DP		 608 void __iomem *db_ptr = NULL;
609
71fb62fb 610 resource_size_t mem_base, db_base;
afbe5cd6 611 unsigned long mem_len, db_len = 0;
97daee83
DP		 612
613 struct pci_dev *pdev = adapter->pdev;
614 int pci_func = adapter->ahw.pci_func;
afbe5cd6 615 struct netxen_hardware_context *ahw = &adapter->ahw;
97daee83
DP		 616
617 int err = 0;
618
619 /*
620 * Set the CRB window to invalid. If any register in window 0 is
621 * accessed it should set the window to 0 and then reset it to 1.
622 */
907fa120 623 adapter->ahw.crb_win = -1;
47abe356 624 adapter->ahw.ocm_win = -1;
97daee83
DP		 625
626 /* remap phys address */
627 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
628 mem_len = pci_resource_len(pdev, 0);
97daee83 629
97daee83
DP		 630 /* 128 Meg of memory */
631 if (mem_len == NETXEN_PCI_128MB_SIZE) {
afbe5cd6
AKS		 632
633 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
634 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
97daee83 635 SECOND_PAGE_GROUP_SIZE);
afbe5cd6 636 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
97daee83 637 THIRD_PAGE_GROUP_SIZE);
afbe5cd6
AKS		 638 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
639 ahw->pci_base2 == NULL) {
640 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
641 err = -EIO;
642 goto err_out;
643 }
644
645 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
646
97daee83 647 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
afbe5cd6
AKS		 648
649 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
650 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
97daee83 651 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
afbe5cd6
AKS		 652 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
653 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
654 err = -EIO;
655 goto err_out;
656 }
657
97daee83 658 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
97daee83 659
afbe5cd6
AKS		 660 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
661 if (ahw->pci_base0 == NULL) {
97daee83
DP		 662 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
663 return -EIO;
664 }
afbe5cd6 665 ahw->pci_len0 = mem_len;
97daee83
DP		 666 } else {
667 return -EIO;
668 }
669
195c5f98
AKS		 670 netxen_setup_hwops(adapter);
671
97daee83
DP		 672 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
673
6abb4b83
AKS		 674 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
675 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
676 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
677
678 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
47abe356
DP		 679 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
680 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
681 }
682
97daee83
DP		 683 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
684 goto skip_doorbell;
685
686 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
687 db_len = pci_resource_len(pdev, 4);
688
689 if (db_len == 0) {
690 printk(KERN_ERR "%s: doorbell is disabled\n",
691 netxen_nic_driver_name);
692 err = -EIO;
693 goto err_out;
694 }
695
696 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
697 if (!db_ptr) {
698 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
699 netxen_nic_driver_name);
700 err = -EIO;
701 goto err_out;
702 }
703
704skip_doorbell:
705 adapter->ahw.db_base = db_ptr;
706 adapter->ahw.db_len = db_len;
707 return 0;
708
709err_out:
710 netxen_cleanup_pci_map(adapter);
711 return err;
712}
713
2b9e62ee
DP		 714static void
715netxen_check_options(struct netxen_adapter *adapter)
716{
717 u32 fw_major, fw_minor, fw_build;
718 char brd_name[NETXEN_MAX_SHORT_NAME];
719 char serial_num[32];
720 int i, offset, val;
721 int *ptr32;
722 struct pci_dev *pdev = adapter->pdev;
723
724 adapter->driver_mismatch = 0;
725
726 ptr32 = (int *)&serial_num;
727 offset = NX_FW_SERIAL_NUM_OFFSET;
728 for (i = 0; i < 8; i++) {
729 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
730 dev_err(&pdev->dev, "error reading board info\n");
731 adapter->driver_mismatch = 1;
732 return;
733 }
734 ptr32[i] = cpu_to_le32(val);
735 offset += sizeof(u32);
736 }
737
738 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
739 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
740 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
741
742 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
743
744 if (adapter->portnum == 0) {
745 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
746
c25c0b9b
DP		 747 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
748 module_name(THIS_MODULE),
2b9e62ee
DP		 749 brd_name, serial_num, adapter->ahw.revision_id);
750 }
751
752 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
753 adapter->driver_mismatch = 1;
754 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
755 fw_major, fw_minor, fw_build);
756 return;
757 }
758
759 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
760 i = NXRD32(adapter, NETXEN_SRE_MISC);
761 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
762 }
763
764 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
765 fw_major, fw_minor, fw_build,
766 adapter->ahw.cut_through ? "cut-through" : "legacy");
767
768 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
769 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
770
771 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
772
773 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
774 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
775 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
776 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
777 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
778 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
779 }
780
781 adapter->msix_supported = 0;
782 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
783 adapter->msix_supported = !!use_msi_x;
784 adapter->rss_supported = !!use_msi_x;
083ba279
AKS		 785 } else {
786 u32 flashed_ver = 0;
787 netxen_rom_fast_read(adapter,
788 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
789 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
790
791 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
792 switch (adapter->ahw.board_type) {
793 case NETXEN_BRDTYPE_P2_SB31_10G:
794 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
795 adapter->msix_supported = !!use_msi_x;
796 adapter->rss_supported = !!use_msi_x;
797 break;
798 default:
799 break;
800 }
2b9e62ee
DP		 801 }
802 }
803
804 adapter->num_txd = MAX_CMD_DESCRIPTORS;
805
806 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
807 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
808 adapter->max_rds_rings = 3;
809 } else {
810 adapter->num_lro_rxd = 0;
811 adapter->max_rds_rings = 2;
812 }
813}
814
ba599d4f 815static int
6a581e93 816netxen_start_firmware(struct netxen_adapter *adapter)
ba599d4f
DP		 817{
818 int val, err, first_boot;
819 struct pci_dev *pdev = adapter->pdev;
820
2b9e62ee
DP		 821 /* required for NX2031 dummy dma */
822 err = nx_set_dma_mask(adapter);
823 if (err)
824 return err;
825
6a581e93 826 if (!netxen_can_start_firmware(adapter))
96f2ebd2 827 goto wait_init;
0b72e659 828
f98a9f69 829 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
ba599d4f
DP		 830
831 err = netxen_check_hw_init(adapter, first_boot);
832 if (err) {
833 dev_err(&pdev->dev, "error in init HW init sequence\n");
834 return err;
835 }
836
6a581e93 837 netxen_request_firmware(adapter);
f7185c71 838
67c38fc6 839 err = netxen_need_fw_reset(adapter);
1dbc84a7 840 if (err < 0)
db4cfd8a 841 goto err_out;
1dbc84a7 842 if (err == 0)
8f9b3f69 843 goto wait_init;
67c38fc6 844
ba599d4f 845 if (first_boot != 0x55555555) {
f98a9f69 846 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
0be367bd 847 netxen_pinit_from_rom(adapter);
ba599d4f
DP		 848 msleep(1);
849 }
567c6c4e 850
f98a9f69 851 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
6a581e93
DP		 852 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
853 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
854
567c6c4e
DP		 855 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
856 netxen_set_port_mode(adapter);
857
db4cfd8a
DP		 858 err = netxen_load_firmware(adapter);
859 if (err)
860 goto err_out;
ba599d4f 861
6a581e93
DP		 862 netxen_release_firmware(adapter);
863
ba599d4f
DP		 864 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
865
866 /* Initialize multicast addr pool owners */
867 val = 0x7654;
1e2d0059 868 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
ba599d4f 869 val |= 0x0f000000;
f98a9f69 870 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
ba599d4f
DP		 871
872 }
873
83ac51fa 874 err = netxen_init_dummy_dma(adapter);
ba599d4f 875 if (err)
db4cfd8a 876 goto err_out;
ba599d4f
DP		 877
878 /*
879 * Tell the hardware our version number.
880 */
881 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
882 | ((_NETXEN_NIC_LINUX_MINOR << 8))
883 | (_NETXEN_NIC_LINUX_SUBVERSION);
f98a9f69 884 NXWR32(adapter, CRB_DRIVER_VERSION, val);
ba599d4f 885
96f2ebd2 886wait_init:
ba599d4f
DP		 887 /* Handshake with the card before we register the devices. */
888 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
889 if (err) {
83ac51fa 890 netxen_free_dummy_dma(adapter);
db4cfd8a 891 goto err_out;
ba599d4f
DP		 892 }
893
8f9b3f69
AKS		 894 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
895
68b3cae0
DP		 896 nx_update_dma_mask(adapter);
897
6a581e93 898 netxen_check_options(adapter);
68b3cae0 899
74c520da
AKS		 900 adapter->need_fw_reset = 0;
901
ec5c50cb 902 /* fall through and release firmware */
db4cfd8a
DP		 903
904err_out:
905 netxen_release_firmware(adapter);
906 return err;
ba599d4f
DP		 907}
908
9f5bc7f1
DP		 909static int
910netxen_nic_request_irq(struct netxen_adapter *adapter)
911{
912 irq_handler_t handler;
d8b100c5
DP		 913 struct nx_host_sds_ring *sds_ring;
914 int err, ring;
915
9f5bc7f1
DP		 916 unsigned long flags = IRQF_SAMPLE_RANDOM;
917 struct net_device *netdev = adapter->netdev;
d8b100c5 918 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
9f5bc7f1 919
9f5bc7f1
DP		 920 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
921 handler = netxen_msix_intr;
922 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
923 handler = netxen_msi_intr;
924 else {
925 flags |= IRQF_SHARED;
926 handler = netxen_intr;
927 }
928 adapter->irq = netdev->irq;
929
d8b100c5
DP		 930 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
931 sds_ring = &recv_ctx->sds_rings[ring];
be339aee 932 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
d8b100c5
DP		 933 err = request_irq(sds_ring->irq, handler,
934 flags, sds_ring->name, sds_ring);
935 if (err)
936 return err;
937 }
938
939 return 0;
940}
941
942static void
943netxen_nic_free_irq(struct netxen_adapter *adapter)
944{
945 int ring;
946 struct nx_host_sds_ring *sds_ring;
947
948 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
949
950 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
951 sds_ring = &recv_ctx->sds_rings[ring];
952 free_irq(sds_ring->irq, sds_ring);
953 }
9f5bc7f1
DP		 954}
955
ca2ef330
DP		 956static void
957netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
958{
959 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
960 adapter->coal.normal.data.rx_time_us =
961 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
962 adapter->coal.normal.data.rx_packets =
963 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
964 adapter->coal.normal.data.tx_time_us =
965 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
966 adapter->coal.normal.data.tx_packets =
967 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
968}
969
6f771419 970/* with rtnl_lock */
9f5bc7f1 971static int
6f771419 972__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
9f5bc7f1
DP		 973{
974 int err;
975
db4cfd8a
DP		 976 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
977 return -EIO;
978
9f5bc7f1
DP		 979 err = adapter->init_port(adapter, adapter->physical_port);
980 if (err) {
981 printk(KERN_ERR "%s: Failed to initialize port %d\n",
982 netxen_nic_driver_name, adapter->portnum);
983 return err;
984 }
3d0a3cc9 985 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
5d09e534 986 adapter->macaddr_set(adapter, adapter->mac_addr);
9f5bc7f1 987
3d0a3cc9
DP		 988 adapter->set_multi(netdev);
989 adapter->set_mtu(adapter, netdev->mtu);
9f5bc7f1
DP		 990
991 adapter->ahw.linkup = 0;
9f5bc7f1 992
d8b100c5
DP		 993 if (adapter->max_sds_rings > 1)
994 netxen_config_rss(adapter, 1);
9f5bc7f1 995
ca2ef330
DP		 996 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
997 netxen_config_intr_coalesce(adapter);
998
1bb482f8
NK		 999 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1000 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1001
b2af9cb0
DP		 1002 netxen_napi_enable(adapter);
1003
5103c9f7 1004 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
3bf26ce3 1005 netxen_linkevent_request(adapter, 1);
3d0a3cc9
DP		 1006 else
1007 netxen_nic_set_link_parameters(adapter);
1008
6a581e93 1009 set_bit(__NX_DEV_UP, &adapter->state);
9f5bc7f1
DP		 1010 return 0;
1011}
1012
6f771419
AKS		 1013/* Usage: During resume and firmware recovery module.*/
1014
1015static inline int
1016netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1017{
1018 int err = 0;
1019
1020 rtnl_lock();
1021 if (netif_running(netdev))
1022 err = __netxen_nic_up(adapter, netdev);
1023 rtnl_unlock();
1024
1025 return err;
1026}
1027
1028/* with rtnl_lock */
9f5bc7f1 1029static void
6f771419 1030__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
9f5bc7f1 1031{
db4cfd8a
DP		 1032 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1033 return;
1034
f2251f66
AKS		 1035 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1036 return;
6a581e93 1037
f2251f66 1038 smp_mb();
b2af9cb0 1039 spin_lock(&adapter->tx_clean_lock);
9f5bc7f1 1040 netif_carrier_off(netdev);
b2af9cb0 1041 netif_tx_disable(netdev);
9f5bc7f1
DP		 1042
1043 if (adapter->stop_port)
1044 adapter->stop_port(adapter);
1045
5cf4d323
DP		 1046 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1047 netxen_p3_free_mac_list(adapter);
1048
22b5794b
AKS		 1049 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1050
be339aee
DP		 1051 netxen_napi_disable(adapter);
1052
9f5bc7f1 1053 netxen_release_tx_buffers(adapter);
b2af9cb0 1054 spin_unlock(&adapter->tx_clean_lock);
9f5bc7f1
DP		 1055}
1056
6f771419
AKS		 1057/* Usage: During suspend and firmware recovery module */
1058
1059static inline void
1060netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1061{
1062 rtnl_lock();
1063 if (netif_running(netdev))
1064 __netxen_nic_down(adapter, netdev);
1065 rtnl_unlock();
1066
1067}
9f5bc7f1
DP		 1068
1069static int
1070netxen_nic_attach(struct netxen_adapter *adapter)
1071{
1072 struct net_device *netdev = adapter->netdev;
1073 struct pci_dev *pdev = adapter->pdev;
becf46a0 1074 int err, ring;
d8b100c5 1075 struct nx_host_rds_ring *rds_ring;
d877f1e3 1076 struct nx_host_tx_ring *tx_ring;
9f5bc7f1 1077
7042cd8f
AKS		 1078 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1079 return 0;
1080
9f5bc7f1 1081 err = netxen_init_firmware(adapter);
232e7d68
DP		 1082 if (err)
1083 return err;
1084
1085 err = netxen_napi_add(adapter, netdev);
1086 if (err)
1087 return err;
9f5bc7f1 1088
9f5bc7f1
DP		 1089 err = netxen_alloc_sw_resources(adapter);
1090 if (err) {
1091 printk(KERN_ERR "%s: Error in setting sw resources\n",
1092 netdev->name);
1093 return err;
1094 }
1095
9f5bc7f1
DP		 1096 err = netxen_alloc_hw_resources(adapter);
1097 if (err) {
1098 printk(KERN_ERR "%s: Error in setting hw resources\n",
1099 netdev->name);
1100 goto err_out_free_sw;
1101 }
1102
4f96b988 1103 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
4ea528a1 1104 tx_ring = adapter->tx_ring;
195c5f98
AKS		 1105 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1106 crb_cmd_producer[adapter->portnum]);
1107 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1108 crb_cmd_consumer[adapter->portnum]);
9f5bc7f1 1109
cb2107be
DP		 1110 tx_ring->producer = 0;
1111 tx_ring->sw_consumer = 0;
1112
1113 netxen_nic_update_cmd_producer(adapter, tx_ring);
1114 netxen_nic_update_cmd_consumer(adapter, tx_ring);
9f5bc7f1
DP		 1115 }
1116
d8b100c5
DP		 1117 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1118 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1119 netxen_post_rx_buffers(adapter, ring, rds_ring);
1120 }
9f5bc7f1
DP		 1121
1122 err = netxen_nic_request_irq(adapter);
1123 if (err) {
1124 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1125 netdev->name);
1126 goto err_out_free_rxbuf;
1127 }
1128
ca2ef330
DP		 1129 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1130 netxen_nic_init_coalesce_defaults(adapter);
1131
fa3ce355
NK		 1132 netxen_create_sysfs_entries(adapter);
1133
9f5bc7f1
DP		 1134 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1135 return 0;
1136
1137err_out_free_rxbuf:
1138 netxen_release_rx_buffers(adapter);
1139 netxen_free_hw_resources(adapter);
1140err_out_free_sw:
1141 netxen_free_sw_resources(adapter);
1142 return err;
1143}
1144
1145static void
1146netxen_nic_detach(struct netxen_adapter *adapter)
1147{
7042cd8f
AKS		 1148 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1149 return;
1150
fa3ce355
NK		 1151 netxen_remove_sysfs_entries(adapter);
1152
9f5bc7f1 1153 netxen_free_hw_resources(adapter);
cf981ffb 1154 netxen_release_rx_buffers(adapter);
be339aee 1155 netxen_nic_free_irq(adapter);
232e7d68 1156 netxen_napi_del(adapter);
9f5bc7f1
DP		 1157 netxen_free_sw_resources(adapter);
1158
1159 adapter->is_up = 0;
1160}
1161
7042cd8f
AKS		 1162int
1163netxen_nic_reset_context(struct netxen_adapter *adapter)
1164{
1165 int err = 0;
1166 struct net_device *netdev = adapter->netdev;
1167
6a581e93
DP		 1168 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1169 return -EBUSY;
1170
7042cd8f
AKS		 1171 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1172
6a581e93
DP		 1173 netif_device_detach(netdev);
1174
7042cd8f 1175 if (netif_running(netdev))
6f771419 1176 __netxen_nic_down(adapter, netdev);
7042cd8f
AKS		 1177
1178 netxen_nic_detach(adapter);
1179
6a581e93
DP		 1180 if (netif_running(netdev)) {
1181 err = netxen_nic_attach(adapter);
1182 if (!err)
6f771419 1183 err = __netxen_nic_up(adapter, netdev);
7042cd8f 1184
6a581e93
DP		 1185 if (err)
1186 goto done;
1187 }
1188
1189 netif_device_attach(netdev);
7042cd8f 1190 }
6a581e93 1191
7042cd8f 1192done:
6a581e93 1193 clear_bit(__NX_RESETTING, &adapter->state);
7042cd8f
AKS		 1194 return err;
1195}
1196
f17443f4
DP		 1197static int
1198netxen_setup_netdev(struct netxen_adapter *adapter,
1199 struct net_device *netdev)
1200{
1201 int err = 0;
1202 struct pci_dev *pdev = adapter->pdev;
1203
1204 adapter->rx_csum = 1;
1205 adapter->mc_enabled = 0;
1206 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1207 adapter->max_mc_count = 38;
1208 else
1209 adapter->max_mc_count = 16;
1210
1211 netdev->netdev_ops = &netxen_netdev_ops;
1212 netdev->watchdog_timeo = 2*HZ;
1213
1214 netxen_nic_change_mtu(netdev, netdev->mtu);
1215
1216 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1217
1218 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1219 netdev->features |= (NETIF_F_GRO);
1220 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1221
1222 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1223 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1224 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1225 }
1226
1227 if (adapter->pci_using_dac) {
1228 netdev->features |= NETIF_F_HIGHDMA;
1229 netdev->vlan_features |= NETIF_F_HIGHDMA;
1230 }
1231
028afe71
DP		 1232 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1233 netdev->features |= (NETIF_F_HW_VLAN_TX);
1234
1bb482f8
NK		 1235 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1236 netdev->features |= NETIF_F_LRO;
1237
f17443f4
DP		 1238 netdev->irq = adapter->msix_entries[0].vector;
1239
74c520da 1240 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
f17443f4
DP		 1241
1242 if (netxen_read_mac_addr(adapter))
1243 dev_warn(&pdev->dev, "failed to read mac addr\n");
1244
1245 netif_carrier_off(netdev);
1246 netif_stop_queue(netdev);
1247
1248 err = register_netdev(netdev);
1249 if (err) {
1250 dev_err(&pdev->dev, "failed to register net device\n");
1251 return err;
1252 }
1253
1254 return 0;
1255}
1256
3d396eb1
AK		 1257static int __devinit
1258netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1259{
1260 struct net_device *netdev = NULL;
1261 struct netxen_adapter *adapter = NULL;
2956640d 1262 int i = 0, err;
3176ff3e 1263 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d 1264 uint8_t revision_id;
3d396eb1 1265
688328c7
EB		 1266 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1267 pr_warning("%s: chip revisions between 0x%x-0x%x "
11d89d63 1268 "will not be enabled.\n",
c25c0b9b 1269 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
11d89d63
DP		 1270 return -ENODEV;
1271 }
1272
3d396eb1
AK		 1273 if ((err = pci_enable_device(pdev)))
1274 return err;
2956640d 1275
3d396eb1
AK		 1276 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1277 err = -ENODEV;
1278 goto err_out_disable_pdev;
1279 }
1280
1281 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1282 goto err_out_disable_pdev;
1283
e87ad553
AKS		 1284 if (NX_IS_REVISION_P3(pdev->revision))
1285 pci_enable_pcie_error_reporting(pdev);
1286
3d396eb1 1287 pci_set_master(pdev);
3176ff3e
MT		 1288
1289 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1290 if(!netdev) {
f17443f4
DP		 1291 dev_err(&pdev->dev, "failed to allocate net_device\n");
1292 err = -ENOMEM;
3176ff3e
MT		 1293 goto err_out_free_res;
1294 }
1295
3176ff3e
MT		 1296 SET_NETDEV_DEV(netdev, &pdev->dev);
1297
4cf1653a 1298 adapter = netdev_priv(netdev);
2956640d
DP		 1299 adapter->netdev = netdev;
1300 adapter->pdev = pdev;
13ba9c77 1301 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 1302
1303 revision_id = pdev->revision;
1304 adapter->ahw.revision_id = revision_id;
1305
f03b0ebd
DP		 1306 rwlock_init(&adapter->ahw.crb_lock);
1307 spin_lock_init(&adapter->ahw.mem_lock);
1308
d8b100c5 1309 spin_lock_init(&adapter->tx_clean_lock);
5cf4d323 1310 INIT_LIST_HEAD(&adapter->mac_list);
3ce06a32 1311
97daee83
DP		 1312 err = netxen_setup_pci_map(adapter);
1313 if (err)
6c80b18d 1314 goto err_out_free_netdev;
3d396eb1 1315
2d1a3bbd 1316 /* This will be reset for mezz cards */
3176ff3e 1317 adapter->portnum = pci_func_id;
3176ff3e 1318
f17443f4
DP		 1319 err = netxen_nic_get_board_info(adapter);
1320 if (err) {
1321 dev_err(&pdev->dev, "Error getting board config info.\n");
dcd56fdb
DP		 1322 goto err_out_iounmap;
1323 }
6c80b18d 1324
13ba9c77 1325 /* Mezz cards have PCI function 0,2,3 enabled */
1e2d0059 1326 switch (adapter->ahw.board_type) {
dc515f2e
DP		 1327 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1328 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1329 if (pci_func_id >= 2)
13ba9c77 1330 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 1331 break;
1332 default:
1333 break;
1334 }
13ba9c77 1335
6a581e93 1336 err = netxen_start_firmware(adapter);
0b72e659 1337 if (err)
8f9b3f69 1338 goto err_out_decr_ref;
f17443f4 1339
3d396eb1 1340 /*
6c80b18d 1341 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 1342 */
dcd56fdb 1343 adapter->physical_port = adapter->portnum;
4f96b988 1344 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
f98a9f69 1345 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
044fad0d
DP		 1346 if (i != 0x55555555)
1347 adapter->physical_port = i;
1348 }
6c80b18d 1349
6a581e93 1350 netxen_nic_clear_stats(adapter);
2956640d 1351
97daee83 1352 netxen_setup_intr(adapter);
2956640d 1353
f17443f4 1354 err = netxen_setup_netdev(adapter, netdev);
9dc28efe 1355 if (err)
2956640d 1356 goto err_out_disable_msi;
6c80b18d
MT		 1357
1358 pci_set_drvdata(pdev, adapter);
3d396eb1 1359
6a581e93
DP		 1360 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1361
1e2d0059 1362 switch (adapter->ahw.port_type) {
2956640d
DP		 1363 case NETXEN_NIC_GBE:
1364 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1365 adapter->netdev->name);
1366 break;
1367 case NETXEN_NIC_XGBE:
1368 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1369 adapter->netdev->name);
1370 break;
3d396eb1 1371 }
3d396eb1 1372
70f9cf89
DP		 1373 netxen_create_diag_entries(adapter);
1374
2956640d
DP		 1375 return 0;
1376
1377err_out_disable_msi:
97daee83 1378 netxen_teardown_intr(adapter);
6c80b18d 1379
83ac51fa 1380 netxen_free_dummy_dma(adapter);
3d396eb1 1381
8f9b3f69 1382err_out_decr_ref:
6a581e93
DP		 1383 nx_decr_dev_ref_cnt(adapter);
1384
2956640d 1385err_out_iounmap:
97daee83 1386 netxen_cleanup_pci_map(adapter);
cb8011ad 1387
6c80b18d
MT		 1388err_out_free_netdev:
1389 free_netdev(netdev);
1390
1391err_out_free_res:
3d396eb1 1392 pci_release_regions(pdev);
6c80b18d
MT		 1393
1394err_out_disable_pdev:
2956640d 1395 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 1396 pci_disable_device(pdev);
1397 return err;
1398}
1399
1400static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1401{
1402 struct netxen_adapter *adapter;
3176ff3e 1403 struct net_device *netdev;
3d396eb1 1404
6c80b18d 1405 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 1406 if (adapter == NULL)
1407 return;
1408
6c80b18d
MT		 1409 netdev = adapter->netdev;
1410
6a581e93
DP		 1411 netxen_cancel_fw_work(adapter);
1412
96acb6eb
DP		 1413 unregister_netdev(netdev);
1414
e424fa9d
AKS		 1415 cancel_work_sync(&adapter->tx_timeout_task);
1416
7042cd8f 1417 netxen_nic_detach(adapter);
3d396eb1 1418
6a581e93
DP		 1419 nx_decr_dev_ref_cnt(adapter);
1420
439b454e 1421 if (adapter->portnum == 0)
83ac51fa 1422 netxen_free_dummy_dma(adapter);
96acb6eb 1423
6a581e93
DP		 1424 clear_bit(__NX_RESETTING, &adapter->state);
1425
97daee83 1426 netxen_teardown_intr(adapter);
3052246c 1427
70f9cf89
DP		 1428 netxen_remove_diag_entries(adapter);
1429
97daee83 1430 netxen_cleanup_pci_map(adapter);
595e3fb8 1431
f7185c71
DP		 1432 netxen_release_firmware(adapter);
1433
e87ad553
AKS		 1434 if (NX_IS_REVISION_P3(pdev->revision))
1435 pci_disable_pcie_error_reporting(pdev);
1436
595e3fb8 1437 pci_release_regions(pdev);
3052246c 1438 pci_disable_device(pdev);
595e3fb8
MT		 1439 pci_set_drvdata(pdev, NULL);
1440
6c80b18d 1441 free_netdev(netdev);
3d396eb1 1442}
e87ad553
AKS		 1443
1444static void netxen_nic_detach_func(struct netxen_adapter *adapter)
0b72e659 1445{
0b72e659
DP		 1446 struct net_device *netdev = adapter->netdev;
1447
1448 netif_device_detach(netdev);
1449
6a581e93
DP		 1450 netxen_cancel_fw_work(adapter);
1451
0b72e659
DP		 1452 if (netif_running(netdev))
1453 netxen_nic_down(adapter, netdev);
1454
e424fa9d
AKS		 1455 cancel_work_sync(&adapter->tx_timeout_task);
1456
7042cd8f 1457 netxen_nic_detach(adapter);
0b72e659 1458
22b5794b
AKS		 1459 if (adapter->portnum == 0)
1460 netxen_free_dummy_dma(adapter);
1461
6a581e93
DP		 1462 nx_decr_dev_ref_cnt(adapter);
1463
1464 clear_bit(__NX_RESETTING, &adapter->state);
22b5794b 1465}
0b72e659 1466
e87ad553 1467static int netxen_nic_attach_func(struct pci_dev *pdev)
0b72e659
DP		 1468{
1469 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1470 struct net_device *netdev = adapter->netdev;
1471 int err;
1472
0b72e659
DP		 1473 err = pci_enable_device(pdev);
1474 if (err)
1475 return err;
1476
bc86fcba
AKS		 1477 pci_set_power_state(pdev, PCI_D0);
1478 pci_set_master(pdev);
1479 pci_restore_state(pdev);
1480
907fa120 1481 adapter->ahw.crb_win = -1;
47abe356 1482 adapter->ahw.ocm_win = -1;
0b72e659 1483
6a581e93 1484 err = netxen_start_firmware(adapter);
0b72e659
DP		 1485 if (err) {
1486 dev_err(&pdev->dev, "failed to start firmware\n");
1487 return err;
1488 }
1489
1490 if (netif_running(netdev)) {
1491 err = netxen_nic_attach(adapter);
1492 if (err)
6a581e93 1493 goto err_out;
0b72e659
DP		 1494
1495 err = netxen_nic_up(adapter, netdev);
1496 if (err)
6a581e93 1497 goto err_out_detach;
0b72e659 1498
d0725e4d 1499 netxen_config_indev_addr(netdev, NETDEV_UP);
0b72e659
DP		 1500 }
1501
bc86fcba 1502 netif_device_attach(netdev);
6a581e93 1503 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
07653aa3 1504 return 0;
6a581e93
DP		 1505
1506err_out_detach:
1507 netxen_nic_detach(adapter);
1508err_out:
1509 nx_decr_dev_ref_cnt(adapter);
1510 return err;
0b72e659 1511}
e87ad553
AKS		 1512
1513static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1514 pci_channel_state_t state)
1515{
1516 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1517
1518 if (state == pci_channel_io_perm_failure)
1519 return PCI_ERS_RESULT_DISCONNECT;
1520
1521 if (nx_dev_request_aer(adapter))
1522 return PCI_ERS_RESULT_RECOVERED;
1523
1524 netxen_nic_detach_func(adapter);
1525
1526 pci_disable_device(pdev);
1527
1528 return PCI_ERS_RESULT_NEED_RESET;
1529}
1530
1531static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1532{
1533 int err = 0;
1534
1535 err = netxen_nic_attach_func(pdev);
1536
1537 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1538}
1539
1540static void netxen_io_resume(struct pci_dev *pdev)
1541{
1542 pci_cleanup_aer_uncorrect_error_status(pdev);
1543}
1544
1545static void netxen_nic_shutdown(struct pci_dev *pdev)
1546{
1547 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1548
1549 netxen_nic_detach_func(adapter);
1550
1551 if (pci_save_state(pdev))
1552 return;
1553
1554 if (netxen_nic_wol_supported(adapter)) {
1555 pci_enable_wake(pdev, PCI_D3cold, 1);
1556 pci_enable_wake(pdev, PCI_D3hot, 1);
1557 }
1558
1559 pci_disable_device(pdev);
1560}
1561
1562#ifdef CONFIG_PM
1563static int
1564netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1565{
1566 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1567 int retval;
1568
1569 netxen_nic_detach_func(adapter);
1570
1571 retval = pci_save_state(pdev);
1572 if (retval)
1573 return retval;
1574
1575 if (netxen_nic_wol_supported(adapter)) {
1576 pci_enable_wake(pdev, PCI_D3cold, 1);
1577 pci_enable_wake(pdev, PCI_D3hot, 1);
1578 }
1579
1580 pci_disable_device(pdev);
1581 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1582
1583 return 0;
1584}
1585
1586static int
1587netxen_nic_resume(struct pci_dev *pdev)
1588{
1589 return netxen_nic_attach_func(pdev);
1590}
01542cd1 1591#endif
0b72e659 1592
3d396eb1
AK		 1593static int netxen_nic_open(struct net_device *netdev)
1594{
4cf1653a 1595 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1596 int err = 0;
3d396eb1 1597
dcd56fdb
DP		 1598 if (adapter->driver_mismatch)
1599 return -EIO;
1600
7042cd8f
AKS		 1601 err = netxen_nic_attach(adapter);
1602 if (err)
1603 return err;
2956640d 1604
6f771419 1605 err = __netxen_nic_up(adapter, netdev);
9f5bc7f1
DP		 1606 if (err)
1607 goto err_out;
05aaa02d 1608
dcd56fdb 1609 netif_start_queue(netdev);
3d396eb1
AK		 1610
1611 return 0;
2956640d 1612
9f5bc7f1
DP		 1613err_out:
1614 netxen_nic_detach(adapter);
2956640d 1615 return err;
3d396eb1
AK		 1616}
1617
1618/*
1619 * netxen_nic_close - Disables a network interface entry point
1620 */
1621static int netxen_nic_close(struct net_device *netdev)
1622{
3176ff3e 1623 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1624
6f771419 1625 __netxen_nic_down(adapter, netdev);
3d396eb1
AK		 1626 return 0;
1627}
1628
1bcfd790
DP		 1629static void
1630netxen_tso_check(struct net_device *netdev,
1631 struct nx_host_tx_ring *tx_ring,
1632 struct cmd_desc_type0 *first_desc,
1633 struct sk_buff *skb)
cd1f8160 1634{
391587c3 1635 u8 opcode = TX_ETHER_PKT;
cdff1036 1636 __be16 protocol = skb->protocol;
028afe71 1637 u16 flags = 0, vid = 0;
1bcfd790 1638 u32 producer;
028afe71 1639 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1bcfd790 1640 struct cmd_desc_type0 *hwdesc;
028afe71 1641 struct vlan_ethhdr *vh;
cdff1036 1642
09640e63 1643 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
028afe71
DP		 1644
1645 vh = (struct vlan_ethhdr *)skb->data;
cdff1036
DP		 1646 protocol = vh->h_vlan_encapsulated_proto;
1647 flags = FLAGS_VLAN_TAGGED;
028afe71
DP		 1648
1649 } else if (vlan_tx_tag_present(skb)) {
1650
1651 flags = FLAGS_VLAN_OOB;
1652 vid = vlan_tx_tag_get(skb);
1653 netxen_set_tx_vlan_tci(first_desc, vid);
1654 vlan_oob = 1;
cdff1036 1655 }
cd1f8160 1656
391587c3
DP		 1657 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1658 skb_shinfo(skb)->gso_size > 0) {
1659
1bcfd790
DP		 1660 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1661
1662 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1663 first_desc->total_hdr_length = hdr_len;
028afe71
DP		 1664 if (vlan_oob) {
1665 first_desc->total_hdr_length += VLAN_HLEN;
1666 first_desc->tcp_hdr_offset = VLAN_HLEN;
1667 first_desc->ip_hdr_offset = VLAN_HLEN;
1668 /* Only in case of TSO on vlan device */
1669 flags |= FLAGS_VLAN_TAGGED;
1670 }
391587c3 1671
09640e63 1672 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
391587c3 1673 TX_TCP_LSO6 : TX_TCP_LSO;
1bcfd790 1674 tso = 1;
cd1f8160
DP		 1675
1676 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1677 u8 l4proto;
1678
09640e63 1679 if (protocol == cpu_to_be16(ETH_P_IP)) {
391587c3
DP		 1680 l4proto = ip_hdr(skb)->protocol;
1681
1682 if (l4proto == IPPROTO_TCP)
1683 opcode = TX_TCP_PKT;
1684 else if(l4proto == IPPROTO_UDP)
1685 opcode = TX_UDP_PKT;
09640e63 1686 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
391587c3
DP		 1687 l4proto = ipv6_hdr(skb)->nexthdr;
1688
1689 if (l4proto == IPPROTO_TCP)
1690 opcode = TX_TCPV6_PKT;
1691 else if(l4proto == IPPROTO_UDP)
1692 opcode = TX_UDPV6_PKT;
1693 }
cd1f8160 1694 }
028afe71
DP		 1695
1696 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1697 first_desc->ip_hdr_offset += skb_network_offset(skb);
1bcfd790
DP		 1698 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1699
1700 if (!tso)
1701 return;
1702
1703 /* For LSO, we need to copy the MAC/IP/TCP headers into
1704 * the descriptor ring
1705 */
1706 producer = tx_ring->producer;
1707 copied = 0;
1708 offset = 2;
1709
028afe71
DP		 1710 if (vlan_oob) {
1711 /* Create a TSO vlan header template for firmware */
1712
1713 hwdesc = &tx_ring->desc_head[producer];
1714 tx_ring->cmd_buf_arr[producer].skb = NULL;
1715
1716 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1717 hdr_len + VLAN_HLEN);
1718
1719 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1720 skb_copy_from_linear_data(skb, vh, 12);
1721 vh->h_vlan_proto = htons(ETH_P_8021Q);
1722 vh->h_vlan_TCI = htons(vid);
1723 skb_copy_from_linear_data_offset(skb, 12,
1724 (char *)vh + 16, copy_len - 16);
1725
545eb370 1726 copied = copy_len - VLAN_HLEN;
028afe71
DP		 1727 offset = 0;
1728
1729 producer = get_next_index(producer, tx_ring->num_desc);
1730 }
1731
1bcfd790
DP		 1732 while (copied < hdr_len) {
1733
1734 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1735 (hdr_len - copied));
1736
1737 hwdesc = &tx_ring->desc_head[producer];
1738 tx_ring->cmd_buf_arr[producer].skb = NULL;
1739
1740 skb_copy_from_linear_data_offset(skb, copied,
1741 (char *)hwdesc + offset, copy_len);
1742
1743 copied += copy_len;
1744 offset = 0;
1745
1746 producer = get_next_index(producer, tx_ring->num_desc);
1747 }
1748
1749 tx_ring->producer = producer;
1750 barrier();
cd1f8160
DP		 1751}
1752
ce644ed4
DP		 1753static int
1754netxen_map_tx_skb(struct pci_dev *pdev,
1755 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
6f703406 1756{
ce644ed4
DP		 1757 struct netxen_skb_frag *nf;
1758 struct skb_frag_struct *frag;
1759 int i, nr_frags;
1760 dma_addr_t map;
1761
1762 nr_frags = skb_shinfo(skb)->nr_frags;
1763 nf = &pbuf->frag_array[0];
1764
1765 map = pci_map_single(pdev, skb->data,
1766 skb_headlen(skb), PCI_DMA_TODEVICE);
1767 if (pci_dma_mapping_error(pdev, map))
1768 goto out_err;
6f703406 1769
ce644ed4
DP		 1770 nf->dma = map;
1771 nf->length = skb_headlen(skb);
1772
1773 for (i = 0; i < nr_frags; i++) {
1774 frag = &skb_shinfo(skb)->frags[i];
1775 nf = &pbuf->frag_array[i+1];
1776
1777 map = pci_map_page(pdev, frag->page, frag->page_offset,
1778 frag->size, PCI_DMA_TODEVICE);
1779 if (pci_dma_mapping_error(pdev, map))
1780 goto unwind;
1781
1782 nf->dma = map;
1783 nf->length = frag->size;
1784 }
1785
1786 return 0;
6f703406 1787
ce644ed4 1788unwind:
cf503e8f
DP		 1789 while (--i >= 0) {
1790 nf = &pbuf->frag_array[i+1];
ce644ed4 1791 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
6f703406 1792 }
ce644ed4
DP		 1793
1794 nf = &pbuf->frag_array[0];
1795 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1796
1797out_err:
1798 return -ENOMEM;
6f703406
DP		 1799}
1800
d32cc3d2
DP		 1801static inline void
1802netxen_clear_cmddesc(u64 *desc)
1803{
1bcfd790
DP		 1804 desc[0] = 0ULL;
1805 desc[2] = 0ULL;
d32cc3d2
DP		 1806}
1807
61357325 1808static netdev_tx_t
d32cc3d2 1809netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3d396eb1 1810{
3176ff3e 1811 struct netxen_adapter *adapter = netdev_priv(netdev);
4ea528a1 1812 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
391587c3 1813 struct netxen_cmd_buffer *pbuf;
3d396eb1 1814 struct netxen_skb_frag *buffrag;
1bcfd790
DP		 1815 struct cmd_desc_type0 *hwdesc, *first_desc;
1816 struct pci_dev *pdev;
391587c3 1817 int i, k;
3d396eb1 1818
cb2107be 1819 u32 producer;
ce644ed4 1820 int frag_count, no_of_desc;
d877f1e3 1821 u32 num_txd = tx_ring->num_desc;
3d396eb1 1822
3d396eb1
AK		 1823 frag_count = skb_shinfo(skb)->nr_frags + 1;
1824
d877f1e3 1825 /* 4 fragments per cmd des */
3d396eb1 1826 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1827
fa9859ef 1828 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
ba53e6b4 1829 netif_stop_queue(netdev);
ba53e6b4 1830 return NETDEV_TX_BUSY;
53a01e00 1831 }
3d396eb1 1832
cb2107be 1833 producer = tx_ring->producer;
ce644ed4 1834 pbuf = &tx_ring->cmd_buf_arr[producer];
cb2107be 1835
1bcfd790 1836 pdev = adapter->pdev;
391587c3 1837
ce644ed4 1838 if (netxen_map_tx_skb(pdev, skb, pbuf))
1bcfd790 1839 goto drop_packet;
391587c3 1840
3d396eb1 1841 pbuf->skb = skb;
3d396eb1 1842 pbuf->frag_count = frag_count;
6f703406 1843
1bcfd790
DP		 1844 first_desc = hwdesc = &tx_ring->desc_head[producer];
1845 netxen_clear_cmddesc((u64 *)hwdesc);
3d396eb1 1846
ce644ed4
DP		 1847 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1848 netxen_set_tx_port(first_desc, adapter->portnum);
3d396eb1 1849
ce644ed4 1850 for (i = 0; i < frag_count; i++) {
3d396eb1 1851
ce644ed4
DP		 1852 k = i % 4;
1853
1854 if ((k == 0) && (i > 0)) {
1855 /* move to next desc.*/
ba53e6b4 1856 producer = get_next_index(producer, num_txd);
d877f1e3 1857 hwdesc = &tx_ring->desc_head[producer];
d32cc3d2 1858 netxen_clear_cmddesc((u64 *)hwdesc);
ce644ed4 1859 tx_ring->cmd_buf_arr[producer].skb = NULL;
6f703406 1860 }
3d396eb1 1861
ce644ed4 1862 buffrag = &pbuf->frag_array[i];
3d396eb1 1863
ce644ed4 1864 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
3d396eb1
AK		 1865 switch (k) {
1866 case 0:
ce644ed4 1867 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1868 break;
1869 case 1:
ce644ed4 1870 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1871 break;
1872 case 2:
ce644ed4 1873 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1874 break;
1875 case 3:
ce644ed4 1876 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
3d396eb1
AK		 1877 break;
1878 }
3d396eb1 1879 }
ce644ed4 1880
1bcfd790 1881 tx_ring->producer = get_next_index(producer, num_txd);
3d396eb1 1882
1bcfd790 1883 netxen_tso_check(netdev, tx_ring, first_desc, skb);
6c80b18d 1884
cb2107be 1885 netxen_nic_update_cmd_producer(adapter, tx_ring);
3d396eb1 1886
1bcfd790 1887 adapter->stats.txbytes += skb->len;
ba53e6b4 1888 adapter->stats.xmitcalled++;
3d396eb1 1889
3d396eb1 1890 return NETDEV_TX_OK;
6f703406
DP		 1891
1892drop_packet:
1893 adapter->stats.txdropped++;
1894 dev_kfree_skb_any(skb);
1895 return NETDEV_TX_OK;
3d396eb1
AK		 1896}
1897
a97342f9
DP		 1898static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1899{
1900 struct net_device *netdev = adapter->netdev;
1901 uint32_t temp, temp_state, temp_val;
1902 int rv = 0;
1903
f98a9f69 1904 temp = NXRD32(adapter, CRB_TEMP_STATE);
a97342f9
DP		 1905
1906 temp_state = nx_get_temp_state(temp);
1907 temp_val = nx_get_temp_val(temp);
1908
1909 if (temp_state == NX_TEMP_PANIC) {
1910 printk(KERN_ALERT
1911 "%s: Device temperature %d degrees C exceeds"
1912 " maximum allowed. Hardware has been shut down.\n",
e4135c2d 1913 netdev->name, temp_val);
a97342f9
DP		 1914 rv = 1;
1915 } else if (temp_state == NX_TEMP_WARN) {
1916 if (adapter->temp == NX_TEMP_NORMAL) {
1917 printk(KERN_ALERT
1918 "%s: Device temperature %d degrees C "
1919 "exceeds operating range."
1920 " Immediate action needed.\n",
e4135c2d 1921 netdev->name, temp_val);
a97342f9
DP		 1922 }
1923 } else {
1924 if (adapter->temp == NX_TEMP_WARN) {
1925 printk(KERN_INFO
1926 "%s: Device temperature is now %d degrees C"
e4135c2d 1927 " in normal range.\n", netdev->name,
a97342f9
DP		 1928 temp_val);
1929 }
1930 }
1931 adapter->temp = temp_state;
1932 return rv;
1933}
1934
3bf26ce3 1935void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
a97342f9
DP		 1936{
1937 struct net_device *netdev = adapter->netdev;
a97342f9
DP		 1938
1939 if (adapter->ahw.linkup && !linkup) {
1940 printk(KERN_INFO "%s: %s NIC Link is down\n",
1941 netxen_nic_driver_name, netdev->name);
1942 adapter->ahw.linkup = 0;
1943 if (netif_running(netdev)) {
1944 netif_carrier_off(netdev);
1945 netif_stop_queue(netdev);
1946 }
e424fa9d 1947 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1948 } else if (!adapter->ahw.linkup && linkup) {
1949 printk(KERN_INFO "%s: %s NIC Link is up\n",
1950 netxen_nic_driver_name, netdev->name);
1951 adapter->ahw.linkup = 1;
1952 if (netif_running(netdev)) {
1953 netif_carrier_on(netdev);
1954 netif_wake_queue(netdev);
1955 }
e424fa9d 1956 adapter->link_changed = !adapter->has_link_events;
a97342f9
DP		 1957 }
1958}
1959
3bf26ce3
DP		 1960static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1961{
1962 u32 val, port, linkup;
1963
1964 port = adapter->physical_port;
1965
1966 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
f98a9f69 1967 val = NXRD32(adapter, CRB_XG_STATE_P3);
3bf26ce3
DP		 1968 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1969 linkup = (val == XG_LINK_UP_P3);
1970 } else {
f98a9f69 1971 val = NXRD32(adapter, CRB_XG_STATE);
a4b751d8
SC		 1972 val = (val >> port*8) & 0xff;
1973 linkup = (val == XG_LINK_UP);
3bf26ce3
DP		 1974 }
1975
1976 netxen_advert_link_change(adapter, linkup);
1977}
1978
3d396eb1
AK		 1979static void netxen_tx_timeout(struct net_device *netdev)
1980{
e424fa9d 1981 struct netxen_adapter *adapter = netdev_priv(netdev);
f17443f4 1982
6a581e93
DP		 1983 if (test_bit(__NX_RESETTING, &adapter->state))
1984 return;
1985
f17443f4 1986 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
e424fa9d 1987 schedule_work(&adapter->tx_timeout_task);
3d396eb1
AK		 1988}
1989
74c520da 1990static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1991{
4790654c 1992 struct netxen_adapter *adapter =
3176ff3e 1993 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1 1994
b2af9cb0
DP		 1995 if (!netif_running(adapter->netdev))
1996 return;
1997
74c520da 1998 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 1999 return;
2000
74c520da
AKS		 2001 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2002 goto request_reset;
2003
2004 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2005 /* try to scrub interrupt */
2006 netxen_napi_disable(adapter);
ba53e6b4 2007
74c520da 2008 adapter->netdev->trans_start = jiffies;
ba53e6b4 2009
74c520da
AKS		 2010 netxen_napi_enable(adapter);
2011
2012 netif_wake_queue(adapter->netdev);
2013
a598ae17 2014 clear_bit(__NX_RESETTING, &adapter->state);
41f3e0b1 2015 return;
74c520da 2016 } else {
a598ae17 2017 clear_bit(__NX_RESETTING, &adapter->state);
74c520da
AKS		 2018 if (!netxen_nic_reset_context(adapter)) {
2019 adapter->netdev->trans_start = jiffies;
a598ae17 2020 return;
74c520da
AKS		 2021 }
2022
2023 /* context reset failed, fall through for fw reset */
2024 }
2025
2026request_reset:
2027 adapter->need_fw_reset = 1;
ff8a306d 2028 clear_bit(__NX_RESETTING, &adapter->state);
3d396eb1
AK		 2029}
2030
a97342f9
DP		 2031struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
2032{
2033 struct netxen_adapter *adapter = netdev_priv(netdev);
5a4d6311 2034 struct net_device_stats *stats = &netdev->stats;
a97342f9
DP		 2035
2036 memset(stats, 0, sizeof(*stats));
2037
1bb482f8 2038 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
e98e3350 2039 stats->tx_packets = adapter->stats.xmitfinished;
a97342f9 2040 stats->rx_bytes = adapter->stats.rxbytes;
a97342f9 2041 stats->tx_bytes = adapter->stats.txbytes;
a97342f9 2042 stats->rx_dropped = adapter->stats.rxdropped;
a97342f9
DP		 2043 stats->tx_dropped = adapter->stats.txdropped;
2044
2045 return stats;
2046}
2047
e4c93c81 2048static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 2049{
d8b100c5
DP		 2050 struct nx_host_sds_ring *sds_ring = data;
2051 struct netxen_adapter *adapter = sds_ring->adapter;
d71e1be8
DP		 2052 u32 status = 0;
2053
195c5f98 2054 status = readl(adapter->isr_int_vec);
d71e1be8 2055
195c5f98 2056 if (!(status & adapter->int_vec_bit))
05aaa02d 2057 return IRQ_NONE;
e01872af 2058
195c5f98 2059 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
d71e1be8 2060 /* check interrupt state machine, to be sure */
195c5f98 2061 status = readl(adapter->crb_int_state_reg);
d71e1be8
DP		 2062 if (!ISR_LEGACY_INT_TRIGGERED(status))
2063 return IRQ_NONE;
2064
092bc571
DP		 2065 } else {
2066 unsigned long our_int = 0;
d71e1be8 2067
195c5f98 2068 our_int = readl(adapter->crb_int_state_reg);
092bc571 2069
d71e1be8 2070 /* not our interrupt */
092bc571 2071 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 2072 return IRQ_NONE;
2073
092bc571 2074 /* claim interrupt */
195c5f98 2075 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
e01872af 2076
195c5f98 2077 /* clear interrupt */
d8b100c5 2078 netxen_nic_disable_int(sds_ring);
195c5f98 2079 }
092bc571 2080
195c5f98 2081 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 2082 /* read twice to ensure write is flushed */
195c5f98
AKS		 2083 readl(adapter->isr_int_vec);
2084 readl(adapter->isr_int_vec);
092bc571 2085
d8b100c5 2086 napi_schedule(&sds_ring->napi);
3d396eb1
AK		 2087
2088 return IRQ_HANDLED;
2089}
2090
e4c93c81 2091static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d 2092{
d8b100c5
DP		 2093 struct nx_host_sds_ring *sds_ring = data;
2094 struct netxen_adapter *adapter = sds_ring->adapter;
05aaa02d 2095
092bc571 2096 /* clear interrupt */
195c5f98 2097 writel(0xffffffff, adapter->tgt_status_reg);
092bc571 2098
d8b100c5 2099 napi_schedule(&sds_ring->napi);
05aaa02d
DP		 2100 return IRQ_HANDLED;
2101}
2102
b3df68f8
DP		 2103static irqreturn_t netxen_msix_intr(int irq, void *data)
2104{
d8b100c5 2105 struct nx_host_sds_ring *sds_ring = data;
b3df68f8 2106
d8b100c5 2107 napi_schedule(&sds_ring->napi);
b3df68f8
DP		 2108 return IRQ_HANDLED;
2109}
2110
bea3348e 2111static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 2112{
d8b100c5
DP		 2113 struct nx_host_sds_ring *sds_ring =
2114 container_of(napi, struct nx_host_sds_ring, napi);
2115
2116 struct netxen_adapter *adapter = sds_ring->adapter;
2117
05aaa02d 2118 int tx_complete;
bea3348e 2119 int work_done;
3d396eb1 2120
05aaa02d 2121 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 2122
d8b100c5 2123 work_done = netxen_process_rcv_ring(sds_ring, budget);
3d396eb1 2124
05aaa02d 2125 if ((work_done < budget) && tx_complete) {
d8b100c5 2126 napi_complete(&sds_ring->napi);
f2251f66 2127 if (test_bit(__NX_DEV_UP, &adapter->state))
b2af9cb0 2128 netxen_nic_enable_int(sds_ring);
3d396eb1
AK		 2129 }
2130
bea3348e 2131 return work_done;
3d396eb1
AK		 2132}
2133
2134#ifdef CONFIG_NET_POLL_CONTROLLER
2135static void netxen_nic_poll_controller(struct net_device *netdev)
2136{
3176ff3e 2137 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 2138 disable_irq(adapter->irq);
1494a814 2139 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 2140 enable_irq(adapter->irq);
2141}
2142#endif
3d396eb1 2143
6a581e93
DP		 2144static int
2145nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2146{
2147 int count;
2148 if (netxen_api_lock(adapter))
2149 return -EIO;
2150
2151 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2152
2153 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2154
2155 netxen_api_unlock(adapter);
2156 return count;
2157}
2158
2159static int
2160nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2161{
2162 int count;
2163 if (netxen_api_lock(adapter))
2164 return -EIO;
2165
2166 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2167 WARN_ON(count == 0);
2168
2169 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2170
2171 if (count == 0)
2172 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2173
2174 netxen_api_unlock(adapter);
2175 return count;
2176}
2177
e87ad553
AKS		 2178static int
2179nx_dev_request_aer(struct netxen_adapter *adapter)
2180{
2181 u32 state;
2182 int ret = -EINVAL;
2183
2184 if (netxen_api_lock(adapter))
2185 return ret;
2186
2187 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2188
2189 if (state == NX_DEV_NEED_AER)
2190 ret = 0;
2191 else if (state == NX_DEV_READY) {
2192 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2193 ret = 0;
2194 }
2195
2196 netxen_api_unlock(adapter);
2197 return ret;
2198}
2199
2200static int
74c520da
AKS		 2201nx_dev_request_reset(struct netxen_adapter *adapter)
2202{
2203 u32 state;
e87ad553 2204 int ret = -EINVAL;
74c520da
AKS		 2205
2206 if (netxen_api_lock(adapter))
e87ad553 2207 return ret;
74c520da
AKS		 2208
2209 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2210
e87ad553
AKS		 2211 if (state == NX_DEV_NEED_RESET)
2212 ret = 0;
2213 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
74c520da 2214 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
e87ad553
AKS		 2215 ret = 0;
2216 }
74c520da
AKS		 2217
2218 netxen_api_unlock(adapter);
e87ad553
AKS		 2219
2220 return ret;
74c520da
AKS		 2221}
2222
6a581e93
DP		 2223static int
2224netxen_can_start_firmware(struct netxen_adapter *adapter)
2225{
2226 int count;
2227 int can_start = 0;
2228
2229 if (netxen_api_lock(adapter))
2230 return 0;
2231
2232 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2233
2234 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2235 count = 0;
2236
2237 if (count == 0) {
2238 can_start = 1;
2239 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2240 }
2241
2242 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2243
2244 netxen_api_unlock(adapter);
2245
2246 return can_start;
2247}
2248
2249static void
2250netxen_schedule_work(struct netxen_adapter *adapter,
2251 work_func_t func, int delay)
2252{
2253 INIT_DELAYED_WORK(&adapter->fw_work, func);
2254 schedule_delayed_work(&adapter->fw_work, delay);
2255}
2256
2257static void
2258netxen_cancel_fw_work(struct netxen_adapter *adapter)
2259{
2260 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2261 msleep(10);
2262
2263 cancel_delayed_work_sync(&adapter->fw_work);
2264}
2265
2266static void
2267netxen_attach_work(struct work_struct *work)
2268{
2269 struct netxen_adapter *adapter = container_of(work,
2270 struct netxen_adapter, fw_work.work);
2271 struct net_device *netdev = adapter->netdev;
2272 int err = 0;
2273
2274 if (netif_running(netdev)) {
2275 err = netxen_nic_attach(adapter);
2276 if (err)
2277 goto done;
2278
2279 err = netxen_nic_up(adapter, netdev);
2280 if (err) {
2281 netxen_nic_detach(adapter);
2282 goto done;
2283 }
2284
d0725e4d 2285 netxen_config_indev_addr(netdev, NETDEV_UP);
6a581e93
DP		 2286 }
2287
2288 netif_device_attach(netdev);
2289
2290done:
2291 adapter->fw_fail_cnt = 0;
2292 clear_bit(__NX_RESETTING, &adapter->state);
2293 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2294}
2295
2296static void
2297netxen_fwinit_work(struct work_struct *work)
2298{
2299 struct netxen_adapter *adapter = container_of(work,
2300 struct netxen_adapter, fw_work.work);
2301 int dev_state;
2302
2303 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2304
2305 switch (dev_state) {
2306 case NX_DEV_COLD:
2307 case NX_DEV_READY:
74c520da
AKS		 2308 if (!netxen_start_firmware(adapter)) {
2309 netxen_schedule_work(adapter, netxen_attach_work, 0);
2310 return;
2311 }
2312 break;
6a581e93 2313
6b50ea15 2314 case NX_DEV_NEED_RESET:
6a581e93
DP		 2315 case NX_DEV_INITALIZING:
2316 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2317 netxen_schedule_work(adapter,
2318 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2319 return;
2320 }
6a581e93
DP		 2321
2322 case NX_DEV_FAILED:
2323 default:
8f9b3f69 2324 nx_incr_dev_ref_cnt(adapter);
6a581e93
DP		 2325 break;
2326 }
2327
6a581e93
DP		 2328 clear_bit(__NX_RESETTING, &adapter->state);
2329}
2330
2331static void
2332netxen_detach_work(struct work_struct *work)
2333{
2334 struct netxen_adapter *adapter = container_of(work,
2335 struct netxen_adapter, fw_work.work);
2336 struct net_device *netdev = adapter->netdev;
2337 int ref_cnt, delay;
2338 u32 status;
2339
2340 netif_device_detach(netdev);
2341
6f771419 2342 netxen_nic_down(adapter, netdev);
6a581e93 2343
e15eec28 2344 rtnl_lock();
6a581e93 2345 netxen_nic_detach(adapter);
e15eec28 2346 rtnl_unlock();
6a581e93
DP		 2347
2348 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2349
6a581e93 2350 if (status & NX_RCODE_FATAL_ERROR)
8f9b3f69 2351 goto err_ret;
6a581e93
DP		 2352
2353 if (adapter->temp == NX_TEMP_PANIC)
8f9b3f69
AKS		 2354 goto err_ret;
2355
2356 ref_cnt = nx_decr_dev_ref_cnt(adapter);
6a581e93 2357
6b50ea15
AKS		 2358 if (ref_cnt == -EIO)
2359 goto err_ret;
2360
6a581e93
DP		 2361 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2362
2363 adapter->fw_wait_cnt = 0;
2364 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
8f9b3f69
AKS		 2365
2366 return;
2367
2368err_ret:
2369 clear_bit(__NX_RESETTING, &adapter->state);
6a581e93
DP		 2370}
2371
2372static int
2373netxen_check_health(struct netxen_adapter *adapter)
2374{
2375 u32 state, heartbit;
2376 struct net_device *netdev = adapter->netdev;
2377
e87ad553
AKS		 2378 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2379 if (state == NX_DEV_NEED_AER)
2380 return 0;
2381
6a581e93
DP		 2382 if (netxen_nic_check_temp(adapter))
2383 goto detach;
2384
74c520da 2385 if (adapter->need_fw_reset) {
e87ad553
AKS		 2386 if (nx_dev_request_reset(adapter))
2387 return 0;
74c520da
AKS		 2388 goto detach;
2389 }
2390
e87ad553
AKS		 2391 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2392 * 1. Tx timeout 2. Fw hang
2393 * Send request to destroy context in case of tx timeout only
2394 * and doesn't required in case of Fw hang
2395 */
6a808c6c
AKS		 2396 if (state == NX_DEV_NEED_RESET) {
2397 adapter->need_fw_reset = 1;
e87ad553
AKS		 2398 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2399 goto detach;
6a808c6c 2400 }
6a581e93
DP		 2401
2402 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2403 return 0;
2404
2405 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2406 if (heartbit != adapter->heartbit) {
2407 adapter->heartbit = heartbit;
2408 adapter->fw_fail_cnt = 0;
e87ad553
AKS		 2409 if (adapter->need_fw_reset)
2410 goto detach;
6a581e93
DP		 2411 return 0;
2412 }
2413
2414 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2415 return 0;
2416
e87ad553
AKS		 2417 if (nx_dev_request_reset(adapter))
2418 return 0;
2419
6a581e93
DP		 2420 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2421
2422 dev_info(&netdev->dev, "firmware hang detected\n");
2423
2424detach:
caa2dd53
NK		 2425 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2426 !test_and_set_bit(__NX_RESETTING, &adapter->state))
6a581e93
DP		 2427 netxen_schedule_work(adapter, netxen_detach_work, 0);
2428 return 1;
2429}
2430
2431static void
2432netxen_fw_poll_work(struct work_struct *work)
2433{
2434 struct netxen_adapter *adapter = container_of(work,
2435 struct netxen_adapter, fw_work.work);
2436
2437 if (test_bit(__NX_RESETTING, &adapter->state))
2438 goto reschedule;
2439
2440 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2441 if (!adapter->has_link_events) {
2442
2443 netxen_nic_handle_phy_intr(adapter);
2444
2445 if (adapter->link_changed)
2446 netxen_nic_set_link_parameters(adapter);
2447 }
2448 }
2449
2450 if (netxen_check_health(adapter))
2451 return;
2452
2453reschedule:
2454 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2455}
2456
fa3ce355
NK		 2457static ssize_t
2458netxen_store_bridged_mode(struct device *dev,
2459 struct device_attribute *attr, const char *buf, size_t len)
2460{
2461 struct net_device *net = to_net_dev(dev);
2462 struct netxen_adapter *adapter = netdev_priv(net);
2463 unsigned long new;
2464 int ret = -EINVAL;
2465
2466 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2467 goto err_out;
2468
2469 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2470 goto err_out;
2471
2472 if (strict_strtoul(buf, 2, &new))
2473 goto err_out;
2474
2475 if (!netxen_config_bridged_mode(adapter, !!new))
2476 ret = len;
2477
2478err_out:
2479 return ret;
2480}
2481
2482static ssize_t
2483netxen_show_bridged_mode(struct device *dev,
2484 struct device_attribute *attr, char *buf)
2485{
2486 struct net_device *net = to_net_dev(dev);
2487 struct netxen_adapter *adapter;
2488 int bridged_mode = 0;
2489
2490 adapter = netdev_priv(net);
2491
2492 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2493 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2494
2495 return sprintf(buf, "%d\n", bridged_mode);
2496}
2497
2498static struct device_attribute dev_attr_bridged_mode = {
2499 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2500 .show = netxen_show_bridged_mode,
2501 .store = netxen_store_bridged_mode,
2502};
2503
70f9cf89
DP		 2504static ssize_t
2505netxen_store_diag_mode(struct device *dev,
2506 struct device_attribute *attr, const char *buf, size_t len)
2507{
2508 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2509 unsigned long new;
2510
2511 if (strict_strtoul(buf, 2, &new))
2512 return -EINVAL;
2513
2514 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2515 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2516
2517 return len;
2518}
2519
2520static ssize_t
2521netxen_show_diag_mode(struct device *dev,
2522 struct device_attribute *attr, char *buf)
2523{
2524 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2525
2526 return sprintf(buf, "%d\n",
2527 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2528}
2529
2530static struct device_attribute dev_attr_diag_mode = {
2531 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2532 .show = netxen_show_diag_mode,
2533 .store = netxen_store_diag_mode,
2534};
2535
2536static int
2537netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2538 loff_t offset, size_t size)
2539{
2540 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2541 return -EIO;
2542
2543 if ((size != 4) || (offset & 0x3))
2544 return -EINVAL;
2545
2546 if (offset < NETXEN_PCI_CRBSPACE)
2547 return -EINVAL;
2548
2549 return 0;
2550}
2551
2552static ssize_t
2553netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2554 char *buf, loff_t offset, size_t size)
2555{
2556 struct device *dev = container_of(kobj, struct device, kobj);
2557 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2558 u32 data;
2559 int ret;
2560
2561 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2562 if (ret != 0)
2563 return ret;
2564
2565 data = NXRD32(adapter, offset);
2566 memcpy(buf, &data, size);
2567 return size;
2568}
2569
2570static ssize_t
2571netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2572 char *buf, loff_t offset, size_t size)
2573{
2574 struct device *dev = container_of(kobj, struct device, kobj);
2575 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2576 u32 data;
2577 int ret;
2578
2579 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2580 if (ret != 0)
2581 return ret;
2582
2583 memcpy(&data, buf, size);
2584 NXWR32(adapter, offset, data);
2585 return size;
2586}
2587
2588static int
2589netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2590 loff_t offset, size_t size)
2591{
2592 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2593 return -EIO;
2594
2595 if ((size != 8) || (offset & 0x7))
2596 return -EIO;
2597
2598 return 0;
2599}
2600
2601static ssize_t
2602netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2603 char *buf, loff_t offset, size_t size)
2604{
2605 struct device *dev = container_of(kobj, struct device, kobj);
2606 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2607 u64 data;
2608 int ret;
2609
2610 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2611 if (ret != 0)
2612 return ret;
2613
2614 if (adapter->pci_mem_read(adapter, offset, &data))
2615 return -EIO;
2616
2617 memcpy(buf, &data, size);
2618
2619 return size;
2620}
2621
1954dc11 2622static ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
70f9cf89
DP		 2623 struct bin_attribute *attr, char *buf,
2624 loff_t offset, size_t size)
2625{
2626 struct device *dev = container_of(kobj, struct device, kobj);
2627 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2628 u64 data;
2629 int ret;
2630
2631 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2632 if (ret != 0)
2633 return ret;
2634
2635 memcpy(&data, buf, size);
2636
2637 if (adapter->pci_mem_write(adapter, offset, data))
2638 return -EIO;
2639
2640 return size;
2641}
2642
2643
2644static struct bin_attribute bin_attr_crb = {
2645 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2646 .size = 0,
2647 .read = netxen_sysfs_read_crb,
2648 .write = netxen_sysfs_write_crb,
2649};
2650
2651static struct bin_attribute bin_attr_mem = {
2652 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2653 .size = 0,
2654 .read = netxen_sysfs_read_mem,
2655 .write = netxen_sysfs_write_mem,
2656};
2657
caa2dd53 2658
fa3ce355
NK		 2659static void
2660netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2661{
2662 struct net_device *netdev = adapter->netdev;
2663 struct device *dev = &netdev->dev;
2664
2665 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2666 /* bridged_mode control */
2667 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2668 dev_warn(&netdev->dev,
2669 "failed to create bridged_mode sysfs entry\n");
2670 }
2671 }
2672}
2673
2674static void
2675netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2676{
2677 struct net_device *netdev = adapter->netdev;
2678 struct device *dev = &netdev->dev;
2679
2680 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2681 device_remove_file(dev, &dev_attr_bridged_mode);
2682}
2683
70f9cf89
DP		 2684static void
2685netxen_create_diag_entries(struct netxen_adapter *adapter)
2686{
2687 struct pci_dev *pdev = adapter->pdev;
2688 struct device *dev;
2689
2690 dev = &pdev->dev;
2691 if (device_create_file(dev, &dev_attr_diag_mode))
2692 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2693 if (device_create_bin_file(dev, &bin_attr_crb))
2694 dev_info(dev, "failed to create crb sysfs entry\n");
2695 if (device_create_bin_file(dev, &bin_attr_mem))
2696 dev_info(dev, "failed to create mem sysfs entry\n");
2697}
2698
2699
2700static void
2701netxen_remove_diag_entries(struct netxen_adapter *adapter)
2702{
2703 struct pci_dev *pdev = adapter->pdev;
2704 struct device *dev = &pdev->dev;
2705
2706 device_remove_file(dev, &dev_attr_diag_mode);
2707 device_remove_bin_file(dev, &bin_attr_crb);
2708 device_remove_bin_file(dev, &bin_attr_mem);
2709}
2710
044824d9
DP		 2711#ifdef CONFIG_INET
2712
6598b169
DP		 2713#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2714
2715static int
2716netxen_destip_supported(struct netxen_adapter *adapter)
2717{
2718 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2719 return 0;
2720
2721 if (adapter->ahw.cut_through)
2722 return 0;
2723
2724 return 1;
2725}
2726
d0725e4d
AKS		 2727static void
2728netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2729{
2730 struct in_device *indev;
2731 struct netxen_adapter *adapter = netdev_priv(dev);
2732
3db76755 2733 if (!netxen_destip_supported(adapter))
d0725e4d
AKS		 2734 return;
2735
2736 indev = in_dev_get(dev);
2737 if (!indev)
2738 return;
2739
2740 for_ifa(indev) {
2741 switch (event) {
2742 case NETDEV_UP:
2743 netxen_config_ipaddr(adapter,
2744 ifa->ifa_address, NX_IP_UP);
2745 break;
2746 case NETDEV_DOWN:
2747 netxen_config_ipaddr(adapter,
2748 ifa->ifa_address, NX_IP_DOWN);
2749 break;
2750 default:
2751 break;
2752 }
2753 } endfor_ifa(indev);
2754
2755 in_dev_put(indev);
2756 return;
2757}
2758
6598b169
DP		 2759static int netxen_netdev_event(struct notifier_block *this,
2760 unsigned long event, void *ptr)
2761{
2762 struct netxen_adapter *adapter;
2763 struct net_device *dev = (struct net_device *)ptr;
6598b169
DP		 2764
2765recheck:
2766 if (dev == NULL)
2767 goto done;
2768
2769 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2770 dev = vlan_dev_real_dev(dev);
2771 goto recheck;
2772 }
2773
2774 if (!is_netxen_netdev(dev))
2775 goto done;
2776
2777 adapter = netdev_priv(dev);
2778
d0725e4d 2779 if (!adapter)
6598b169
DP		 2780 goto done;
2781
2782 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2783 goto done;
2784
d0725e4d 2785 netxen_config_indev_addr(dev, event);
6598b169
DP		 2786done:
2787 return NOTIFY_DONE;
2788}
2789
2790static int
2791netxen_inetaddr_event(struct notifier_block *this,
2792 unsigned long event, void *ptr)
2793{
2794 struct netxen_adapter *adapter;
2795 struct net_device *dev;
2796
2797 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2798
2799 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2800
2801recheck:
2802 if (dev == NULL || !netif_running(dev))
2803 goto done;
2804
2805 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2806 dev = vlan_dev_real_dev(dev);
2807 goto recheck;
2808 }
2809
2810 if (!is_netxen_netdev(dev))
2811 goto done;
2812
2813 adapter = netdev_priv(dev);
2814
2815 if (!adapter || !netxen_destip_supported(adapter))
2816 goto done;
2817
2818 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2819 goto done;
2820
2821 switch (event) {
2822 case NETDEV_UP:
2823 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2824 break;
2825 case NETDEV_DOWN:
2826 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2827 break;
2828 default:
2829 break;
2830 }
2831
2832done:
2833 return NOTIFY_DONE;
2834}
2835
2836static struct notifier_block netxen_netdev_cb = {
2837 .notifier_call = netxen_netdev_event,
2838};
2839
2840static struct notifier_block netxen_inetaddr_cb = {
2841 .notifier_call = netxen_inetaddr_event,
2842};
9feae56c
RD		 2843#else
2844static void
2845netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2846{ }
044824d9 2847#endif
6598b169 2848
e87ad553
AKS		 2849static struct pci_error_handlers netxen_err_handler = {
2850 .error_detected = netxen_io_error_detected,
2851 .slot_reset = netxen_io_slot_reset,
2852 .resume = netxen_io_resume,
2853};
2854
3d396eb1
AK		 2855static struct pci_driver netxen_driver = {
2856 .name = netxen_nic_driver_name,
2857 .id_table = netxen_pci_tbl,
2858 .probe = netxen_nic_probe,
0b72e659 2859 .remove = __devexit_p(netxen_nic_remove),
01542cd1 2860#ifdef CONFIG_PM
0b72e659 2861 .suspend = netxen_nic_suspend,
22b5794b 2862 .resume = netxen_nic_resume,
01542cd1 2863#endif
e87ad553
AKS		 2864 .shutdown = netxen_nic_shutdown,
2865 .err_handler = &netxen_err_handler
3d396eb1
AK		 2866};
2867
3d396eb1
AK		 2868static int __init netxen_init_module(void)
2869{
ff4fbd43
DP		 2870 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2871
044824d9 2872#ifdef CONFIG_INET
6598b169
DP		 2873 register_netdevice_notifier(&netxen_netdev_cb);
2874 register_inetaddr_notifier(&netxen_inetaddr_cb);
044824d9 2875#endif
184231bd 2876 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 2877}
2878
2879module_init(netxen_init_module);
2880
2881static void __exit netxen_exit_module(void)
2882{
3d396eb1 2883 pci_unregister_driver(&netxen_driver);
6598b169 2884
044824d9 2885#ifdef CONFIG_INET
6598b169
DP		 2886 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2887 unregister_netdevice_notifier(&netxen_netdev_cb);
044824d9 2888#endif
3d396eb1
AK		 2889}
2890
2891module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)