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netxen: fix link speed reporting for some boards
[linux-2.6-block.git] / drivers / net / netxen / netxen_nic_main.c
CommitLineData
3d396eb1
AK		 1/*
2 * Copyright (C) 2003 - 2006 NetXen, Inc.
3 * All rights reserved.
80922fbc 4 *
3d396eb1
AK		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
80922fbc 9 *
3d396eb1
AK		 10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
80922fbc 14 *
3d396eb1
AK		 15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
80922fbc 19 *
3d396eb1
AK		 20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
80922fbc 22 *
3d396eb1
AK		 23 * Contact Information:
24 * info@netxen.com
25 * NetXen,
26 * 3965 Freedom Circle, Fourth floor,
27 * Santa Clara, CA 95054
28 *
29 *
30 * Main source file for NetXen NIC Driver on Linux
31 *
32 */
33
cb8011ad 34#include <linux/vmalloc.h>
ed25ffa1 35#include <linux/highmem.h>
3d396eb1
AK		 36#include "netxen_nic_hw.h"
37
38#include "netxen_nic.h"
3d396eb1 39#include "netxen_nic_phan_reg.h"
3d396eb1 40
1494a814 41#include <linux/dma-mapping.h>
391587c3 42#include <linux/if_vlan.h>
c9bdd4b5 43#include <net/ip.h>
1494a814 44
3d396eb1
AK		 45MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
46MODULE_LICENSE("GPL");
47MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
48
ceded32f 49char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 50static char netxen_nic_driver_string[] = "NetXen Network Driver version "
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
3d396eb1
AK		 62/* Local functions to NetXen NIC driver */
63static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 64 const struct pci_device_id *ent);
3d396eb1
AK		 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 int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
69static void netxen_tx_timeout(struct net_device *netdev);
6d5aefb8 70static void netxen_tx_timeout_task(struct work_struct *work);
3d396eb1 71static void netxen_watchdog(unsigned long);
bea3348e 72static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 73#ifdef CONFIG_NET_POLL_CONTROLLER
74static void netxen_nic_poll_controller(struct net_device *netdev);
75#endif
1494a814 76static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 77static irqreturn_t netxen_msi_intr(int irq, void *data);
3d396eb1
AK		 78
79/* PCI Device ID Table */
70081ac5 80#define ENTRY(device) \
040dec3b 81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83
3d396eb1 84static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
92 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 93 {0,}
94};
95
96MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
97
b1555130
AB		 98/*
99 * In netxen_nic_down(), we must wait for any pending callback requests into
100 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
101 * reenabled right after it is deleted in netxen_nic_down().
102 * FLUSH_SCHEDULED_WORK() does this synchronization.
103 *
104 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
105 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
106 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
107 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
108 * linkwatch_event() to be executed which also attempts to acquire the rtnl
109 * lock thus causing a deadlock.
110 */
111
112static struct workqueue_struct *netxen_workq;
113#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
114#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
115
ed25ffa1
AK		 116static void netxen_watchdog(unsigned long);
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
DP		 124netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
125 uint32_t crb_producer)
3176ff3e 126{
3ce06a32
DP		 127 adapter->pci_write_normalize(adapter,
128 adapter->crb_addr_cmd_producer, crb_producer);
3176ff3e
MT		 129}
130
7830b22c
DP		 131static uint32_t crb_cmd_consumer[4] = {
132 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
133 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
134};
135
3ce06a32
DP		 136static inline void
137netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
138 u32 crb_consumer)
3176ff3e 139{
3ce06a32
DP		 140 adapter->pci_write_normalize(adapter,
141 adapter->crb_addr_cmd_consumer, crb_consumer);
3176ff3e
MT		 142}
143
2956640d 144static uint32_t msi_tgt_status[8] = {
443be796 145 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 146 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
147 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
148 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 149};
150
2956640d
DP		 151static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
152
092bc571 153static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
4638aef1 154{
092bc571 155 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
4638aef1
SH		 156}
157
092bc571 158static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
4638aef1 159{
48bfd1e0 160 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
4638aef1 161
092bc571
DP		 162 if (!NETXEN_IS_MSI_FAMILY(adapter))
163 adapter->pci_write_immediate(adapter,
164 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 165}
166
2956640d
DP		 167static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
168{
169 struct pci_dev *pdev = adapter->pdev;
170 int err;
171 uint64_t mask;
172
173#ifdef CONFIG_IA64
174 adapter->dma_mask = DMA_32BIT_MASK;
175#else
176 if (revision_id >= NX_P3_B0) {
177 /* should go to DMA_64BIT_MASK */
178 adapter->dma_mask = DMA_39BIT_MASK;
179 mask = DMA_39BIT_MASK;
180 } else if (revision_id == NX_P3_A2) {
181 adapter->dma_mask = DMA_39BIT_MASK;
182 mask = DMA_39BIT_MASK;
183 } else if (revision_id == NX_P2_C1) {
184 adapter->dma_mask = DMA_35BIT_MASK;
185 mask = DMA_35BIT_MASK;
186 } else {
187 adapter->dma_mask = DMA_32BIT_MASK;
188 mask = DMA_32BIT_MASK;
189 goto set_32_bit_mask;
190 }
191
192 /*
193 * Consistent DMA mask is set to 32 bit because it cannot be set to
194 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
195 * come off this pool.
196 */
197 if (pci_set_dma_mask(pdev, mask) == 0 &&
198 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
199 adapter->pci_using_dac = 1;
200 return 0;
201 }
202#endif /* CONFIG_IA64 */
203
204set_32_bit_mask:
205 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
206 if (!err)
207 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
208 if (err) {
209 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
210 return err;
211 }
212
213 adapter->pci_using_dac = 0;
214 return 0;
215}
216
217static void netxen_check_options(struct netxen_adapter *adapter)
218{
219 switch (adapter->ahw.boardcfg.board_type) {
220 case NETXEN_BRDTYPE_P3_HMEZ:
221 case NETXEN_BRDTYPE_P3_XG_LOM:
222 case NETXEN_BRDTYPE_P3_10G_CX4:
223 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
224 case NETXEN_BRDTYPE_P3_IMEZ:
225 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
a70f9393
DP		 226 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
227 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
2956640d
DP		 228 case NETXEN_BRDTYPE_P3_10G_XFP:
229 case NETXEN_BRDTYPE_P3_10000_BASE_T:
230 adapter->msix_supported = !!use_msi_x;
231 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
232 break;
233
234 case NETXEN_BRDTYPE_P2_SB31_10G:
235 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
236 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
237 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
238 adapter->msix_supported = 0;
239 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
240 break;
241
242 case NETXEN_BRDTYPE_P3_REF_QG:
243 case NETXEN_BRDTYPE_P3_4_GB:
244 case NETXEN_BRDTYPE_P3_4_GB_MM:
ec68db69 245 adapter->msix_supported = !!use_msi_x;
c7860a2a 246 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
a70f9393
DP		 247 break;
248
2956640d
DP		 249 case NETXEN_BRDTYPE_P2_SB35_4G:
250 case NETXEN_BRDTYPE_P2_SB31_2G:
251 adapter->msix_supported = 0;
252 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
253 break;
254
c7860a2a
DP		 255 case NETXEN_BRDTYPE_P3_10G_TP:
256 adapter->msix_supported = !!use_msi_x;
257 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
258 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
259 else
260 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
261 break;
262
2956640d
DP		 263 default:
264 adapter->msix_supported = 0;
265 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
266
267 printk(KERN_WARNING "Unknown board type(0x%x)\n",
268 adapter->ahw.boardcfg.board_type);
269 break;
270 }
271
272 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
273 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
274 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
275
276 adapter->max_possible_rss_rings = 1;
277 return;
278}
279
280static int
281netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
282{
283 int ret = 0;
284
285 if (first_boot == 0x55555555) {
286 /* This is the first boot after power up */
287
288 /* PCI bus master workaround */
289 adapter->hw_read_wx(adapter,
290 NETXEN_PCIE_REG(0x4), &first_boot, 4);
291 if (!(first_boot & 0x4)) {
292 first_boot |= 0x4;
293 adapter->hw_write_wx(adapter,
294 NETXEN_PCIE_REG(0x4), &first_boot, 4);
295 adapter->hw_read_wx(adapter,
296 NETXEN_PCIE_REG(0x4), &first_boot, 4);
297 }
298
299 /* This is the first boot after power up */
300 adapter->hw_read_wx(adapter,
301 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
302 if (first_boot != 0x80000f) {
303 /* clear the register for future unloads/loads */
304 adapter->pci_write_normalize(adapter,
305 NETXEN_CAM_RAM(0x1fc), 0);
306 ret = -1;
307 }
308
309 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
310 /* Start P2 boot loader */
311 adapter->pci_write_normalize(adapter,
312 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
313 adapter->pci_write_normalize(adapter,
314 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
315 }
316 }
317 return ret;
318}
319
320static void netxen_set_port_mode(struct netxen_adapter *adapter)
321{
322 u32 val, data;
323
324 val = adapter->ahw.boardcfg.board_type;
325 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
326 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
327 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
328 data = NETXEN_PORT_MODE_802_3_AP;
329 adapter->hw_write_wx(adapter,
330 NETXEN_PORT_MODE_ADDR, &data, 4);
331 } else if (port_mode == NETXEN_PORT_MODE_XG) {
332 data = NETXEN_PORT_MODE_XG;
333 adapter->hw_write_wx(adapter,
334 NETXEN_PORT_MODE_ADDR, &data, 4);
335 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
336 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
337 adapter->hw_write_wx(adapter,
338 NETXEN_PORT_MODE_ADDR, &data, 4);
339 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
340 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
341 adapter->hw_write_wx(adapter,
342 NETXEN_PORT_MODE_ADDR, &data, 4);
343 } else {
344 data = NETXEN_PORT_MODE_AUTO_NEG;
345 adapter->hw_write_wx(adapter,
346 NETXEN_PORT_MODE_ADDR, &data, 4);
347 }
348
349 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
350 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
351 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
352 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
353 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
354 }
355 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
356 &wol_port_mode, 4);
357 }
358}
359
360#define PCI_CAP_ID_GEN 0x10
361
362static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
363{
364 u32 pdevfuncsave;
365 u32 c8c9value = 0;
366 u32 chicken = 0;
367 u32 control = 0;
368 int i, pos;
369 struct pci_dev *pdev;
370
2956640d
DP		 371 pdev = adapter->pdev;
372
373 adapter->hw_read_wx(adapter,
374 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
375 /* clear chicken3.25:24 */
376 chicken &= 0xFCFFFFFF;
377 /*
378 * if gen1 and B0, set F1020 - if gen 2, do nothing
379 * if gen2 set to F1000
380 */
381 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
382 if (pos == 0xC0) {
383 pci_read_config_dword(pdev, pos + 0x10, &control);
384 if ((control & 0x000F0000) != 0x00020000) {
385 /* set chicken3.24 if gen1 */
386 chicken |= 0x01000000;
387 }
388 printk(KERN_INFO "%s Gen2 strapping detected\n",
389 netxen_nic_driver_name);
390 c8c9value = 0xF1000;
391 } else {
392 /* set chicken3.24 if gen1 */
393 chicken |= 0x01000000;
394 printk(KERN_INFO "%s Gen1 strapping detected\n",
395 netxen_nic_driver_name);
396 if (adapter->ahw.revision_id == NX_P3_B0)
397 c8c9value = 0xF1020;
398 else
399 c8c9value = 0;
400
401 }
402 adapter->hw_write_wx(adapter,
403 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
404
405 if (!c8c9value)
406 return;
407
408 pdevfuncsave = pdev->devfn;
409 if (pdevfuncsave & 0x07)
410 return;
411
412 for (i = 0; i < 8; i++) {
413 pci_read_config_dword(pdev, pos + 8, &control);
414 pci_read_config_dword(pdev, pos + 8, &control);
415 pci_write_config_dword(pdev, pos + 8, c8c9value);
416 pdev->devfn++;
417 }
418 pdev->devfn = pdevfuncsave;
419}
420
421static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
422{
423 u32 control;
424 int pos;
425
426 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
427 if (pos) {
428 pci_read_config_dword(pdev, pos, &control);
429 if (enable)
430 control |= PCI_MSIX_FLAGS_ENABLE;
431 else
432 control = 0;
433 pci_write_config_dword(pdev, pos, control);
434 }
435}
436
437static void netxen_init_msix_entries(struct netxen_adapter *adapter)
438{
439 int i;
440
441 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
442 adapter->msix_entries[i].entry = i;
443}
444
9dc28efe
DP		 445static int
446netxen_read_mac_addr(struct netxen_adapter *adapter)
447{
448 int i;
449 unsigned char *p;
450 __le64 mac_addr;
9dc28efe
DP		 451 struct net_device *netdev = adapter->netdev;
452 struct pci_dev *pdev = adapter->pdev;
453
454 if (netxen_is_flash_supported(adapter) != 0)
455 return -EIO;
456
457 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
458 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
459 return -EIO;
460 } else {
461 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
462 return -EIO;
463 }
464
465 p = (unsigned char *)&mac_addr;
466 for (i = 0; i < 6; i++)
467 netdev->dev_addr[i] = *(p + 5 - i);
468
469 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
470
471 /* set station address */
472
e174961c
JB		 473 if (!is_valid_ether_addr(netdev->perm_addr))
474 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
475 else
9dc28efe
DP		 476 adapter->macaddr_set(adapter, netdev->dev_addr);
477
478 return 0;
479}
480
1abd266f
SH		 481static void netxen_set_multicast_list(struct net_device *dev)
482{
483 struct netxen_adapter *adapter = netdev_priv(dev);
484
485 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
486 netxen_p3_nic_set_multi(dev);
487 else
488 netxen_p2_nic_set_multi(dev);
489}
490
491static const struct net_device_ops netxen_netdev_ops = {
492 .ndo_open = netxen_nic_open,
493 .ndo_stop = netxen_nic_close,
494 .ndo_start_xmit = netxen_nic_xmit_frame,
495 .ndo_get_stats = netxen_nic_get_stats,
496 .ndo_validate_addr = eth_validate_addr,
497 .ndo_set_multicast_list = netxen_set_multicast_list,
498 .ndo_set_mac_address = netxen_nic_set_mac,
499 .ndo_change_mtu = netxen_nic_change_mtu,
500 .ndo_tx_timeout = netxen_tx_timeout,
501#ifdef CONFIG_NET_POLL_CONTROLLER
502 .ndo_poll_controller = netxen_nic_poll_controller,
503#endif
504};
505
3d396eb1
AK		 506/*
507 * netxen_nic_probe()
508 *
509 * The Linux system will invoke this after identifying the vendor ID and
510 * device Id in the pci_tbl supported by this module.
511 *
512 * A quad port card has one operational PCI config space, (function 0),
513 * which is used to access all four ports.
514 *
515 * This routine will initialize the adapter, and setup the global parameters
516 * along with the port's specific structure.
517 */
518static int __devinit
519netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
520{
521 struct net_device *netdev = NULL;
522 struct netxen_adapter *adapter = NULL;
ed25ffa1
AK		 523 void __iomem *mem_ptr0 = NULL;
524 void __iomem *mem_ptr1 = NULL;
525 void __iomem *mem_ptr2 = NULL;
6c80b18d
MT		 526 unsigned long first_page_group_end;
527 unsigned long first_page_group_start;
528
cb8011ad 529
a608ab9c 530 u8 __iomem *db_ptr = NULL;
2956640d
DP		 531 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
532 int i = 0, err;
533 int first_driver, first_boot;
6c80b18d 534 u32 val;
3176ff3e 535 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d
DP		 536 struct netxen_legacy_intr_set *legacy_intrp;
537 uint8_t revision_id;
3d396eb1 538
dcd56fdb 539 if (pci_func_id == 0)
2956640d 540 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
6c80b18d 541
3176ff3e 542 if (pdev->class != 0x020000) {
dcd56fdb 543 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 544 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 545 return -ENODEV;
546 }
2956640d 547
11d89d63
DP		 548 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
549 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
550 "will not be enabled.\n",
551 NX_P3_A0, NX_P3_B1);
552 return -ENODEV;
553 }
554
3d396eb1
AK		 555 if ((err = pci_enable_device(pdev)))
556 return err;
2956640d 557
3d396eb1
AK		 558 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
559 err = -ENODEV;
560 goto err_out_disable_pdev;
561 }
562
563 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
564 goto err_out_disable_pdev;
565
566 pci_set_master(pdev);
3176ff3e
MT		 567
568 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
569 if(!netdev) {
570 printk(KERN_ERR"%s: Failed to allocate memory for the "
571 "device block.Check system memory resource"
572 " usage.\n", netxen_nic_driver_name);
573 goto err_out_free_res;
574 }
575
3176ff3e
MT		 576 SET_NETDEV_DEV(netdev, &pdev->dev);
577
4cf1653a 578 adapter = netdev_priv(netdev);
2956640d
DP		 579 adapter->netdev = netdev;
580 adapter->pdev = pdev;
13ba9c77 581 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 582
583 revision_id = pdev->revision;
584 adapter->ahw.revision_id = revision_id;
585
586 err = nx_set_dma_mask(adapter, revision_id);
587 if (err)
588 goto err_out_free_netdev;
589
3ce06a32
DP		 590 rwlock_init(&adapter->adapter_lock);
591 adapter->ahw.qdr_sn_window = -1;
592 adapter->ahw.ddr_mn_window = -1;
13ba9c77 593
3d396eb1
AK		 594 /* remap phys address */
595 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
596 mem_len = pci_resource_len(pdev, 0);
3ce06a32
DP		 597 pci_len0 = 0;
598
599 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
600 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
601 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
602 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
603 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
604 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
605 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
606 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
607 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
3d396eb1
AK		 608
609 /* 128 Meg of memory */
6c80b18d
MT		 610 if (mem_len == NETXEN_PCI_128MB_SIZE) {
611 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
612 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
613 SECOND_PAGE_GROUP_SIZE);
614 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
615 THIRD_PAGE_GROUP_SIZE);
616 first_page_group_start = FIRST_PAGE_GROUP_START;
617 first_page_group_end = FIRST_PAGE_GROUP_END;
618 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
619 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
620 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
621 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
622 first_page_group_start = 0;
623 first_page_group_end = 0;
3ce06a32
DP		 624 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
625 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
626 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
627 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
628 adapter->pci_write_immediate =
629 netxen_nic_pci_write_immediate_2M;
630 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
631 adapter->pci_write_normalize =
632 netxen_nic_pci_write_normalize_2M;
633 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
634 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
635 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
636
637 mem_ptr0 = ioremap(mem_base, mem_len);
638 pci_len0 = mem_len;
639 first_page_group_start = 0;
640 first_page_group_end = 0;
641
642 adapter->ahw.ddr_mn_window = 0;
643 adapter->ahw.qdr_sn_window = 0;
644
645 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
646 (pci_func_id * 0x20);
647 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
648 if (pci_func_id < 4)
649 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
650 else
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func_id - 4) * 0x10);
6c80b18d 653 } else {
4790654c 654 err = -EIO;
6c80b18d
MT		 655 goto err_out_free_netdev;
656 }
cb8011ad 657
3ce06a32 658 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
cb8011ad 659
ed25ffa1
AK		 660 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
661 db_len = pci_resource_len(pdev, 4);
662
663 if (db_len == 0) {
664 printk(KERN_ERR "%s: doorbell is disabled\n",
2956640d 665 netxen_nic_driver_name);
ed25ffa1
AK		 666 err = -EIO;
667 goto err_out_iounmap;
668 }
669 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
670 db_len);
671
672 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
a608ab9c 673 if (!db_ptr) {
ed25ffa1 674 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
2956640d 675 netxen_nic_driver_name);
ed25ffa1
AK		 676 err = -EIO;
677 goto err_out_iounmap;
3d396eb1 678 }
ed25ffa1 679 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
3d396eb1 680
6c80b18d 681 adapter->ahw.pci_base0 = mem_ptr0;
3ce06a32 682 adapter->ahw.pci_len0 = pci_len0;
6c80b18d
MT		 683 adapter->ahw.first_page_group_start = first_page_group_start;
684 adapter->ahw.first_page_group_end = first_page_group_end;
685 adapter->ahw.pci_base1 = mem_ptr1;
686 adapter->ahw.pci_base2 = mem_ptr2;
687 adapter->ahw.db_base = db_ptr;
688 adapter->ahw.db_len = db_len;
3d396eb1 689
bea3348e 690 netif_napi_add(netdev, &adapter->napi,
2956640d
DP		 691 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
692
693 if (revision_id >= NX_P3_B0)
694 legacy_intrp = &legacy_intr[pci_func_id];
695 else
696 legacy_intrp = &legacy_intr[0];
697
698 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
699 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
700 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
701 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
bea3348e 702
2d1a3bbd 703 /* this will be read from FW later */
704 adapter->intr_scheme = -1;
443be796 705 adapter->msi_mode = -1;
2d1a3bbd 706
707 /* This will be reset for mezz cards */
3176ff3e 708 adapter->portnum = pci_func_id;
2d1a3bbd 709 adapter->status &= ~NETXEN_NETDEV_STATUS;
200eef20 710 adapter->rx_csum = 1;
623621b0 711 adapter->mc_enabled = 0;
83821a07 712 if (NX_IS_REVISION_P3(revision_id))
2956640d 713 adapter->max_mc_count = 38;
83821a07 714 else
2956640d 715 adapter->max_mc_count = 16;
3176ff3e 716
1abd266f 717 netdev->netdev_ops = &netxen_netdev_ops;
05aaa02d 718 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 719
720 netxen_nic_change_mtu(netdev, netdev->mtu);
721
722 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1abd266f 723
3176ff3e
MT		 724 /* ScatterGather support */
725 netdev->features = NETIF_F_SG;
726 netdev->features |= NETIF_F_IP_CSUM;
727 netdev->features |= NETIF_F_TSO;
cd1f8160
DP		 728 if (NX_IS_REVISION_P3(revision_id)) {
729 netdev->features |= NETIF_F_IPV6_CSUM;
2956640d 730 netdev->features |= NETIF_F_TSO6;
cd1f8160 731 }
3176ff3e 732
2956640d 733 if (adapter->pci_using_dac)
3176ff3e
MT		 734 netdev->features |= NETIF_F_HIGHDMA;
735
6c80b18d
MT		 736 /*
737 * Set the CRB window to invalid. If any register in window 0 is
738 * accessed it should set the window to 0 and then reset it to 1.
739 */
740 adapter->curr_window = 255;
741
dcd56fdb
DP		 742 if (netxen_nic_get_board_info(adapter) != 0) {
743 printk("%s: Error getting board config info.\n",
2956640d 744 netxen_nic_driver_name);
dcd56fdb
DP		 745 err = -EIO;
746 goto err_out_iounmap;
747 }
6c80b18d 748
6c80b18d
MT		 749 netxen_initialize_adapter_ops(adapter);
750
13ba9c77 751 /* Mezz cards have PCI function 0,2,3 enabled */
dc515f2e
DP		 752 switch (adapter->ahw.boardcfg.board_type) {
753 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
754 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
755 if (pci_func_id >= 2)
13ba9c77 756 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 757 break;
758 default:
759 break;
760 }
13ba9c77 761
2956640d
DP		 762 /*
763 * This call will setup various max rx/tx counts.
764 * It must be done before any buffer/ring allocations.
765 */
766 netxen_check_options(adapter);
3d396eb1 767
2956640d
DP		 768 first_driver = 0;
769 if (NX_IS_REVISION_P3(revision_id)) {
770 if (adapter->ahw.pci_func == 0)
771 first_driver = 1;
772 } else {
773 if (adapter->portnum == 0)
774 first_driver = 1;
775 }
3d396eb1 776
2956640d
DP		 777 if (first_driver) {
778 first_boot = adapter->pci_read_normalize(adapter,
779 NETXEN_CAM_RAM(0x1fc));
3176ff3e 780
2956640d
DP		 781 err = netxen_check_hw_init(adapter, first_boot);
782 if (err) {
783 printk(KERN_ERR "%s: error in init HW init sequence\n",
784 netxen_nic_driver_name);
785 goto err_out_iounmap;
3176ff3e 786 }
3176ff3e 787
2956640d
DP		 788 if (NX_IS_REVISION_P3(revision_id))
789 netxen_set_port_mode(adapter);
790
791 if (first_boot != 0x55555555) {
3ce06a32
DP		 792 adapter->pci_write_normalize(adapter,
793 CRB_CMDPEG_STATE, 0);
439b454e
DP		 794 netxen_pinit_from_rom(adapter, 0);
795 msleep(1);
796 netxen_load_firmware(adapter);
2956640d
DP		 797 }
798
799 if (NX_IS_REVISION_P3(revision_id))
800 netxen_pcie_strap_init(adapter);
801
802 if (NX_IS_REVISION_P2(revision_id)) {
623621b0
DP		 803
804 /* Initialize multicast addr pool owners */
805 val = 0x7654;
806 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
807 val |= 0x0f000000;
808 netxen_crb_writelit_adapter(adapter,
809 NETXEN_MAC_ADDR_CNTL_REG, val);
810
6c80b18d 811 }
96acb6eb 812
2956640d
DP		 813 if ((first_boot == 0x55555555) &&
814 (NX_IS_REVISION_P2(revision_id))) {
815 /* Unlock the HW, prompting the boot sequence */
816 adapter->pci_write_normalize(adapter,
817 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
818 }
819
820 err = netxen_initialize_adapter_offload(adapter);
821 if (err)
822 goto err_out_iounmap;
6c80b18d
MT		 823
824 /*
825 * Tell the hardware our version number.
826 */
4790654c 827 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
6c80b18d
MT		 828 | ((_NETXEN_NIC_LINUX_MINOR << 8))
829 | (_NETXEN_NIC_LINUX_SUBVERSION);
3ce06a32 830 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
3d396eb1 831
3176ff3e
MT		 832 /* Handshake with the card before we register the devices. */
833 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
2956640d 834
2956640d
DP		 835 } /* first_driver */
836
837 netxen_nic_flash_print(adapter);
3d396eb1 838
d9e651bc
DP		 839 if (NX_IS_REVISION_P3(revision_id)) {
840 adapter->hw_read_wx(adapter,
841 NETXEN_MIU_MN_CONTROL, &val, 4);
842 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
843 dev_info(&pdev->dev, "firmware running in %s mode\n",
844 adapter->ahw.cut_through ? "cut through" : "legacy");
845 }
846
3d396eb1 847 /*
6c80b18d 848 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 849 */
dcd56fdb 850 adapter->physical_port = adapter->portnum;
3ce06a32 851 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
6c80b18d 852 if (i != 0x55555555)
3276fbad 853 adapter->physical_port = i;
6c80b18d 854
2956640d
DP		 855 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
856
857 netxen_set_msix_bit(pdev, 0);
858
859 if (NX_IS_REVISION_P3(revision_id)) {
860 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
861 mem_len != NETXEN_PCI_2MB_SIZE)
862 adapter->msix_supported = 0;
863 }
864
865 if (adapter->msix_supported) {
866
867 netxen_init_msix_entries(adapter);
868
869 if (pci_enable_msix(pdev, adapter->msix_entries,
870 MSIX_ENTRIES_PER_ADAPTER))
871 goto request_msi;
872
873 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
874 netxen_set_msix_bit(pdev, 1);
875 dev_info(&pdev->dev, "using msi-x interrupts\n");
876
877 } else {
878request_msi:
879 if (use_msi && !pci_enable_msi(pdev)) {
880 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
881 dev_info(&pdev->dev, "using msi interrupts\n");
882 } else
883 dev_info(&pdev->dev, "using legacy interrupts\n");
884 }
885
886 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
887 netdev->irq = adapter->msix_entries[0].vector;
888 else
889 netdev->irq = pdev->irq;
890
891 err = netxen_receive_peg_ready(adapter);
892 if (err)
893 goto err_out_disable_msi;
894
895 init_timer(&adapter->watchdog_timer);
2956640d
DP		 896 adapter->watchdog_timer.function = &netxen_watchdog;
897 adapter->watchdog_timer.data = (unsigned long)adapter;
898 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
899 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
900
9dc28efe
DP		 901 err = netxen_read_mac_addr(adapter);
902 if (err)
903 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 904
3176ff3e
MT		 905 netif_carrier_off(netdev);
906 netif_stop_queue(netdev);
907
6c80b18d
MT		 908 if ((err = register_netdev(netdev))) {
909 printk(KERN_ERR "%s: register_netdev failed port #%d"
910 " aborting\n", netxen_nic_driver_name,
911 adapter->portnum);
912 err = -EIO;
2956640d 913 goto err_out_disable_msi;
6c80b18d
MT		 914 }
915
916 pci_set_drvdata(pdev, adapter);
3d396eb1 917
2956640d
DP		 918 switch (adapter->ahw.board_type) {
919 case NETXEN_NIC_GBE:
920 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
921 adapter->netdev->name);
922 break;
923 case NETXEN_NIC_XGBE:
924 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
925 adapter->netdev->name);
926 break;
3d396eb1 927 }
3d396eb1 928
2956640d
DP		 929 return 0;
930
931err_out_disable_msi:
932 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
933 pci_disable_msix(pdev);
6c80b18d
MT		 934 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
935 pci_disable_msi(pdev);
936
2956640d
DP		 937 if (first_driver)
938 netxen_free_adapter_offload(adapter);
3d396eb1 939
2956640d 940err_out_iounmap:
ed25ffa1
AK		 941 if (db_ptr)
942 iounmap(db_ptr);
943
ed25ffa1
AK		 944 if (mem_ptr0)
945 iounmap(mem_ptr0);
946 if (mem_ptr1)
947 iounmap(mem_ptr1);
948 if (mem_ptr2)
949 iounmap(mem_ptr2);
cb8011ad 950
6c80b18d
MT		 951err_out_free_netdev:
952 free_netdev(netdev);
953
954err_out_free_res:
3d396eb1 955 pci_release_regions(pdev);
6c80b18d
MT		 956
957err_out_disable_pdev:
2956640d 958 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 959 pci_disable_device(pdev);
960 return err;
961}
962
963static void __devexit netxen_nic_remove(struct pci_dev *pdev)
964{
965 struct netxen_adapter *adapter;
3176ff3e 966 struct net_device *netdev;
3d396eb1 967
6c80b18d 968 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 969 if (adapter == NULL)
970 return;
971
6c80b18d
MT		 972 netdev = adapter->netdev;
973
96acb6eb
DP		 974 unregister_netdev(netdev);
975
96acb6eb 976 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
3d396eb1 977 netxen_free_hw_resources(adapter);
9e410778 978 netxen_release_rx_buffers(adapter);
2956640d 979 netxen_free_sw_resources(adapter);
96acb6eb 980 }
3d396eb1 981
439b454e
DP		 982 if (adapter->portnum == 0)
983 netxen_free_adapter_offload(adapter);
96acb6eb 984
3052246c 985 if (adapter->irq)
986 free_irq(adapter->irq, adapter);
987
2956640d
DP		 988 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
989 pci_disable_msix(pdev);
3052246c 990 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
991 pci_disable_msi(pdev);
992
6c80b18d
MT		 993 iounmap(adapter->ahw.db_base);
994 iounmap(adapter->ahw.pci_base0);
995 iounmap(adapter->ahw.pci_base1);
996 iounmap(adapter->ahw.pci_base2);
595e3fb8
MT		 997
998 pci_release_regions(pdev);
3052246c 999 pci_disable_device(pdev);
595e3fb8
MT		 1000 pci_set_drvdata(pdev, NULL);
1001
6c80b18d 1002 free_netdev(netdev);
3d396eb1
AK		 1003}
1004
1005/*
1006 * Called when a network interface is made active
1007 * @returns 0 on success, negative value on failure
1008 */
1009static int netxen_nic_open(struct net_device *netdev)
1010{
4cf1653a 1011 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1012 int err = 0;
1013 int ctx, ring;
05aaa02d
DP		 1014 irq_handler_t handler;
1015 unsigned long flags = IRQF_SAMPLE_RANDOM;
3d396eb1 1016
dcd56fdb
DP		 1017 if (adapter->driver_mismatch)
1018 return -EIO;
1019
3d396eb1
AK		 1020 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1021 err = netxen_init_firmware(adapter);
1022 if (err != 0) {
1023 printk(KERN_ERR "Failed to init firmware\n");
1024 return -EIO;
1025 }
3d396eb1 1026
83821a07
DP		 1027 if (adapter->fw_major < 4)
1028 adapter->max_rds_rings = 3;
1029 else
1030 adapter->max_rds_rings = 2;
1031
2956640d 1032 err = netxen_alloc_sw_resources(adapter);
3d396eb1 1033 if (err) {
2956640d
DP		 1034 printk(KERN_ERR "%s: Error in setting sw resources\n",
1035 netdev->name);
3d396eb1
AK		 1036 return err;
1037 }
2956640d
DP		 1038
1039 netxen_nic_clear_stats(adapter);
1040
1041 err = netxen_alloc_hw_resources(adapter);
1042 if (err) {
1043 printk(KERN_ERR "%s: Error in setting hw resources\n",
1044 netdev->name);
1045 goto err_out_free_sw;
1046 }
1047
092bc571
DP		 1048 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1049 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1050 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1051 "incompatible with driver\n",
1052 netdev->name);
1053 adapter->driver_mismatch = 1;
1054 goto err_out_free_hw;
1055 }
1056
2956640d
DP		 1057 if (adapter->fw_major < 4) {
1058 adapter->crb_addr_cmd_producer =
1059 crb_cmd_producer[adapter->portnum];
1060 adapter->crb_addr_cmd_consumer =
1061 crb_cmd_consumer[adapter->portnum];
2956640d 1062
83821a07
DP		 1063 netxen_nic_update_cmd_producer(adapter, 0);
1064 netxen_nic_update_cmd_consumer(adapter, 0);
1065 }
2956640d 1066
3d396eb1 1067 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
48bfd1e0 1068 for (ring = 0; ring < adapter->max_rds_rings; ring++)
3d396eb1 1069 netxen_post_rx_buffers(adapter, ctx, ring);
3d396eb1 1070 }
2956640d 1071 if (NETXEN_IS_MSI_FAMILY(adapter))
05aaa02d
DP		 1072 handler = netxen_msi_intr;
1073 else {
1074 flags |= IRQF_SHARED;
1075 handler = netxen_intr;
1076 }
2956640d 1077 adapter->irq = netdev->irq;
05aaa02d
DP		 1078 err = request_irq(adapter->irq, handler,
1079 flags, netdev->name, adapter);
3d396eb1
AK		 1080 if (err) {
1081 printk(KERN_ERR "request_irq failed with: %d\n", err);
9e410778 1082 goto err_out_free_rxbuf;
3d396eb1 1083 }
ed25ffa1
AK		 1084
1085 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1086 }
2956640d 1087
3d396eb1
AK		 1088 /* Done here again so that even if phantom sw overwrote it,
1089 * we set it */
c9fc891f 1090 err = adapter->init_port(adapter, adapter->physical_port);
2956640d 1091 if (err) {
595e3fb8
MT		 1092 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1093 netxen_nic_driver_name, adapter->portnum);
2956640d 1094 goto err_out_free_irq;
595e3fb8 1095 }
2956640d 1096 adapter->macaddr_set(adapter, netdev->dev_addr);
595e3fb8 1097
3176ff3e 1098 netxen_nic_set_link_parameters(adapter);
3d396eb1 1099
1abd266f 1100 netxen_set_multicast_list(netdev);
9ad27643 1101 if (adapter->set_mtu)
c9fc891f 1102 adapter->set_mtu(adapter, netdev->mtu);
ed25ffa1 1103
922c4f2c 1104 adapter->ahw.linkup = 0;
dcd56fdb 1105 mod_timer(&adapter->watchdog_timer, jiffies);
05aaa02d
DP		 1106
1107 napi_enable(&adapter->napi);
1108 netxen_nic_enable_int(adapter);
1109
dcd56fdb 1110 netif_start_queue(netdev);
3d396eb1
AK		 1111
1112 return 0;
2956640d
DP		 1113
1114err_out_free_irq:
1115 free_irq(adapter->irq, adapter);
9e410778
DP		 1116err_out_free_rxbuf:
1117 netxen_release_rx_buffers(adapter);
092bc571 1118err_out_free_hw:
2956640d
DP		 1119 netxen_free_hw_resources(adapter);
1120err_out_free_sw:
1121 netxen_free_sw_resources(adapter);
1122 return err;
3d396eb1
AK		 1123}
1124
1125/*
1126 * netxen_nic_close - Disables a network interface entry point
1127 */
1128static int netxen_nic_close(struct net_device *netdev)
1129{
3176ff3e 1130 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1131
1132 netif_carrier_off(netdev);
1133 netif_stop_queue(netdev);
bea3348e 1134 napi_disable(&adapter->napi);
3d396eb1 1135
72b0a7a8 1136 if (adapter->stop_port)
1137 adapter->stop_port(adapter);
1138
e01872af 1139 netxen_nic_disable_int(adapter);
1140
2956640d
DP		 1141 netxen_release_tx_buffers(adapter);
1142
922c4f2c
DP		 1143 FLUSH_SCHEDULED_WORK();
1144 del_timer_sync(&adapter->watchdog_timer);
3d396eb1
AK		 1145
1146 return 0;
1147}
1148
391587c3 1149static bool netxen_tso_check(struct net_device *netdev,
cd1f8160
DP		 1150 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1151{
391587c3
DP		 1152 bool tso = false;
1153 u8 opcode = TX_ETHER_PKT;
cd1f8160 1154
391587c3
DP		 1155 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1156 skb_shinfo(skb)->gso_size > 0) {
1157
1158 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1159 desc->total_hdr_length =
1160 skb_transport_offset(skb) + tcp_hdrlen(skb);
1161
1162 opcode = (skb->protocol == htons(ETH_P_IPV6)) ?
1163 TX_TCP_LSO6 : TX_TCP_LSO;
1164 tso = true;
cd1f8160
DP		 1165
1166 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
391587c3
DP		 1167 u8 l4proto;
1168
1169 if (skb->protocol == htons(ETH_P_IP)) {
1170 l4proto = ip_hdr(skb)->protocol;
1171
1172 if (l4proto == IPPROTO_TCP)
1173 opcode = TX_TCP_PKT;
1174 else if(l4proto == IPPROTO_UDP)
1175 opcode = TX_UDP_PKT;
1176 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1177 l4proto = ipv6_hdr(skb)->nexthdr;
1178
1179 if (l4proto == IPPROTO_TCP)
1180 opcode = TX_TCPV6_PKT;
1181 else if(l4proto == IPPROTO_UDP)
1182 opcode = TX_UDPV6_PKT;
1183 }
cd1f8160
DP		 1184 }
1185 desc->tcp_hdr_offset = skb_transport_offset(skb);
1186 desc->ip_hdr_offset = skb_network_offset(skb);
391587c3
DP		 1187 netxen_set_tx_flags_opcode(desc, 0, opcode);
1188 return tso;
cd1f8160
DP		 1189}
1190
3d396eb1
AK		 1191static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1192{
3176ff3e 1193 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1194 struct netxen_hardware_context *hw = &adapter->ahw;
1195 unsigned int first_seg_len = skb->len - skb->data_len;
391587c3 1196 struct netxen_cmd_buffer *pbuf;
3d396eb1 1197 struct netxen_skb_frag *buffrag;
391587c3
DP		 1198 struct cmd_desc_type0 *hwdesc;
1199 int i, k;
3d396eb1 1200
ba53e6b4 1201 u32 producer, consumer;
391587c3 1202 int frag_count, no_of_desc;
ba53e6b4 1203 u32 num_txd = adapter->max_tx_desc_count;
391587c3 1204 bool is_tso = false;
3d396eb1 1205
3d396eb1
AK		 1206 frag_count = skb_shinfo(skb)->nr_frags + 1;
1207
3d396eb1
AK		 1208 /* There 4 fragments per descriptor */
1209 no_of_desc = (frag_count + 3) >> 2;
53a01e00 1210
ba53e6b4
DP		 1211 producer = adapter->cmd_producer;
1212 smp_mb();
1213 consumer = adapter->last_cmd_consumer;
1214 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1215 netif_stop_queue(netdev);
1216 smp_mb();
1217 return NETDEV_TX_BUSY;
53a01e00 1218 }
3d396eb1 1219
3d396eb1 1220 /* Copy the descriptors into the hardware */
3d396eb1
AK		 1221 hwdesc = &hw->cmd_desc_head[producer];
1222 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1223 /* Take skb->data itself */
1224 pbuf = &adapter->cmd_buf_arr[producer];
391587c3
DP		 1225
1226 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1227
3d396eb1 1228 pbuf->skb = skb;
3d396eb1 1229 pbuf->frag_count = frag_count;
3d396eb1 1230 buffrag = &pbuf->frag_array[0];
3176ff3e 1231 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
3d396eb1
AK		 1232 PCI_DMA_TODEVICE);
1233 buffrag->length = first_seg_len;
391587c3
DP		 1234 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1235 netxen_set_tx_port(hwdesc, adapter->portnum);
3d396eb1 1236
3d396eb1
AK		 1237 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1238 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1239
1240 for (i = 1, k = 1; i < frag_count; i++, k++) {
1241 struct skb_frag_struct *frag;
1242 int len, temp_len;
1243 unsigned long offset;
1244 dma_addr_t temp_dma;
1245
1246 /* move to next desc. if there is a need */
1247 if ((i & 0x3) == 0) {
1248 k = 0;
ba53e6b4 1249 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1250 hwdesc = &hw->cmd_desc_head[producer];
1251 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
53a01e00 1252 pbuf = &adapter->cmd_buf_arr[producer];
1253 pbuf->skb = NULL;
3d396eb1
AK		 1254 }
1255 frag = &skb_shinfo(skb)->frags[i - 1];
1256 len = frag->size;
1257 offset = frag->page_offset;
1258
1259 temp_len = len;
3176ff3e 1260 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
3d396eb1
AK		 1261 len, PCI_DMA_TODEVICE);
1262
1263 buffrag++;
1264 buffrag->dma = temp_dma;
1265 buffrag->length = temp_len;
1266
3d396eb1
AK		 1267 switch (k) {
1268 case 0:
1269 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1270 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1271 break;
1272 case 1:
1273 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1274 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1275 break;
1276 case 2:
1277 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1278 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1279 break;
1280 case 3:
a608ab9c 1281 hwdesc->buffer4_length = cpu_to_le16(temp_len);
3d396eb1
AK		 1282 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1283 break;
1284 }
1285 frag++;
1286 }
ba53e6b4 1287 producer = get_next_index(producer, num_txd);
3d396eb1 1288
3d396eb1
AK		 1289 /* For LSO, we need to copy the MAC/IP/TCP headers into
1290 * the descriptor ring
1291 */
391587c3 1292 if (is_tso) {
3d396eb1 1293 int hdr_len, first_hdr_len, more_hdr;
391587c3 1294 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
ed25ffa1
AK		 1295 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1296 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1297 more_hdr = 1;
1298 } else {
1299 first_hdr_len = hdr_len;
1300 more_hdr = 0;
1301 }
1302 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1303 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1304 pbuf = &adapter->cmd_buf_arr[producer];
1305 pbuf->skb = NULL;
3d396eb1
AK		 1306
1307 /* copy the first 64 bytes */
ed25ffa1 1308 memcpy(((void *)hwdesc) + 2,
3d396eb1 1309 (void *)(skb->data), first_hdr_len);
ba53e6b4 1310 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1311
1312 if (more_hdr) {
1313 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1314 pbuf = &adapter->cmd_buf_arr[producer];
1315 pbuf->skb = NULL;
3d396eb1
AK		 1316 /* copy the next 64 bytes - should be enough except
1317 * for pathological case
1318 */
d626f62b
ACM		 1319 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1320 hwdesc,
1321 (hdr_len -
1322 first_hdr_len));
ba53e6b4 1323 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1324 }
1325 }
6c80b18d 1326
ba53e6b4 1327 adapter->cmd_producer = producer;
5dc16268 1328 adapter->stats.txbytes += skb->len;
6c80b18d 1329
ba53e6b4 1330 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
3d396eb1 1331
ba53e6b4 1332 adapter->stats.xmitcalled++;
3d396eb1
AK		 1333 netdev->trans_start = jiffies;
1334
3d396eb1
AK		 1335 return NETDEV_TX_OK;
1336}
1337
a97342f9
DP		 1338static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1339{
1340 struct net_device *netdev = adapter->netdev;
1341 uint32_t temp, temp_state, temp_val;
1342 int rv = 0;
1343
1344 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1345
1346 temp_state = nx_get_temp_state(temp);
1347 temp_val = nx_get_temp_val(temp);
1348
1349 if (temp_state == NX_TEMP_PANIC) {
1350 printk(KERN_ALERT
1351 "%s: Device temperature %d degrees C exceeds"
1352 " maximum allowed. Hardware has been shut down.\n",
1353 netxen_nic_driver_name, temp_val);
1354
1355 netif_carrier_off(netdev);
1356 netif_stop_queue(netdev);
1357 rv = 1;
1358 } else if (temp_state == NX_TEMP_WARN) {
1359 if (adapter->temp == NX_TEMP_NORMAL) {
1360 printk(KERN_ALERT
1361 "%s: Device temperature %d degrees C "
1362 "exceeds operating range."
1363 " Immediate action needed.\n",
1364 netxen_nic_driver_name, temp_val);
1365 }
1366 } else {
1367 if (adapter->temp == NX_TEMP_WARN) {
1368 printk(KERN_INFO
1369 "%s: Device temperature is now %d degrees C"
1370 " in normal range.\n", netxen_nic_driver_name,
1371 temp_val);
1372 }
1373 }
1374 adapter->temp = temp_state;
1375 return rv;
1376}
1377
1378static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1379{
1380 struct net_device *netdev = adapter->netdev;
1381 u32 val, port, linkup;
1382
1383 port = adapter->physical_port;
1384
24a7a455
DP		 1385 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1386 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1387 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1388 linkup = (val == XG_LINK_UP_P3);
c9fc891f 1389 } else {
24a7a455
DP		 1390 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1391 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1392 linkup = (val >> port) & 1;
1393 else {
c9fc891f
DP		 1394 val = (val >> port*8) & 0xff;
1395 linkup = (val == XG_LINK_UP);
c9fc891f 1396 }
a97342f9
DP		 1397 }
1398
1399 if (adapter->ahw.linkup && !linkup) {
1400 printk(KERN_INFO "%s: %s NIC Link is down\n",
1401 netxen_nic_driver_name, netdev->name);
1402 adapter->ahw.linkup = 0;
1403 if (netif_running(netdev)) {
1404 netif_carrier_off(netdev);
1405 netif_stop_queue(netdev);
1406 }
c7860a2a
DP		 1407
1408 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1409 } else if (!adapter->ahw.linkup && linkup) {
1410 printk(KERN_INFO "%s: %s NIC Link is up\n",
1411 netxen_nic_driver_name, netdev->name);
1412 adapter->ahw.linkup = 1;
1413 if (netif_running(netdev)) {
1414 netif_carrier_on(netdev);
1415 netif_wake_queue(netdev);
1416 }
c7860a2a
DP		 1417
1418 netxen_nic_set_link_parameters(adapter);
a97342f9
DP		 1419 }
1420}
1421
3d396eb1
AK		 1422static void netxen_watchdog(unsigned long v)
1423{
1424 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1425
1426 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1427}
1428
a97342f9
DP		 1429void netxen_watchdog_task(struct work_struct *work)
1430{
1431 struct netxen_adapter *adapter =
1432 container_of(work, struct netxen_adapter, watchdog_task);
1433
1434 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1435 return;
1436
1437 netxen_nic_handle_phy_intr(adapter);
1438
922c4f2c
DP		 1439 if (netif_running(adapter->netdev))
1440 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1441}
1442
3d396eb1
AK		 1443static void netxen_tx_timeout(struct net_device *netdev)
1444{
3176ff3e
MT		 1445 struct netxen_adapter *adapter = (struct netxen_adapter *)
1446 netdev_priv(netdev);
1447 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1448}
1449
6d5aefb8 1450static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1451{
4790654c 1452 struct netxen_adapter *adapter =
3176ff3e 1453 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1454
1455 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1456 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1457
ba53e6b4
DP		 1458 netxen_nic_disable_int(adapter);
1459 napi_disable(&adapter->napi);
1460
6c80b18d 1461 adapter->netdev->trans_start = jiffies;
ba53e6b4
DP		 1462
1463 napi_enable(&adapter->napi);
1464 netxen_nic_enable_int(adapter);
6c80b18d 1465 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1466}
1467
a97342f9
DP		 1468/*
1469 * netxen_nic_get_stats - Get System Network Statistics
1470 * @netdev: network interface device structure
1471 */
1472struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1473{
1474 struct netxen_adapter *adapter = netdev_priv(netdev);
1475 struct net_device_stats *stats = &adapter->net_stats;
1476
1477 memset(stats, 0, sizeof(*stats));
1478
1479 /* total packets received */
1480 stats->rx_packets = adapter->stats.no_rcv;
1481 /* total packets transmitted */
1482 stats->tx_packets = adapter->stats.xmitedframes +
1483 adapter->stats.xmitfinished;
1484 /* total bytes received */
1485 stats->rx_bytes = adapter->stats.rxbytes;
1486 /* total bytes transmitted */
1487 stats->tx_bytes = adapter->stats.txbytes;
1488 /* bad packets received */
1489 stats->rx_errors = adapter->stats.rcvdbadskb;
1490 /* packet transmit problems */
1491 stats->tx_errors = adapter->stats.nocmddescriptor;
1492 /* no space in linux buffers */
1493 stats->rx_dropped = adapter->stats.rxdropped;
1494 /* no space available in linux */
1495 stats->tx_dropped = adapter->stats.txdropped;
1496
1497 return stats;
1498}
1499
e4c93c81 1500static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1501{
1daec86a 1502 struct netxen_adapter *adapter = data;
d71e1be8
DP		 1503 u32 status = 0;
1504
1505 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1506
1507 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1508 return IRQ_NONE;
e01872af 1509
d71e1be8
DP		 1510 if (adapter->ahw.revision_id >= NX_P3_B1) {
1511 /* check interrupt state machine, to be sure */
1512 status = adapter->pci_read_immediate(adapter,
1513 ISR_INT_STATE_REG);
1514 if (!ISR_LEGACY_INT_TRIGGERED(status))
1515 return IRQ_NONE;
1516
092bc571
DP		 1517 } else {
1518 unsigned long our_int = 0;
d71e1be8
DP		 1519
1520 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
092bc571 1521
d71e1be8 1522 /* not our interrupt */
092bc571 1523 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1524 return IRQ_NONE;
1525
092bc571
DP		 1526 /* claim interrupt */
1527 adapter->pci_write_normalize(adapter,
1528 CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1529 }
1530
092bc571
DP		 1531 /* clear interrupt */
1532 if (adapter->fw_major < 4)
1533 netxen_nic_disable_int(adapter);
1534
1535 adapter->pci_write_immediate(adapter,
1536 adapter->legacy_intr.tgt_status_reg,
1537 0xffffffff);
1538 /* read twice to ensure write is flushed */
1539 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1540 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1541
1542 napi_schedule(&adapter->napi);
3d396eb1
AK		 1543
1544 return IRQ_HANDLED;
1545}
1546
e4c93c81 1547static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d
DP		 1548{
1549 struct netxen_adapter *adapter = data;
1550
092bc571
DP		 1551 /* clear interrupt */
1552 adapter->pci_write_immediate(adapter,
1553 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1554
1555 napi_schedule(&adapter->napi);
05aaa02d
DP		 1556 return IRQ_HANDLED;
1557}
1558
bea3348e 1559static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1560{
bea3348e 1561 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
05aaa02d 1562 int tx_complete;
3d396eb1 1563 int ctx;
bea3348e 1564 int work_done;
3d396eb1 1565
05aaa02d 1566 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1567
80922fbc 1568 work_done = 0;
3d396eb1
AK		 1569 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1570 /*
1571 * Fairness issue. This will give undue weight to the
1572 * receive context 0.
1573 */
1574
1575 /*
1576 * To avoid starvation, we give each of our receivers,
1577 * a fraction of the quota. Sometimes, it might happen that we
1578 * have enough quota to process every packet, but since all the
1579 * packets are on one context, it gets only half of the quota,
1580 * and ends up not processing it.
1581 */
bea3348e
SH		 1582 work_done += netxen_process_rcv_ring(adapter, ctx,
1583 budget / MAX_RCV_CTX);
3d396eb1
AK		 1584 }
1585
05aaa02d 1586 if ((work_done < budget) && tx_complete) {
908a7a16 1587 netif_rx_complete(&adapter->napi);
3d396eb1
AK		 1588 netxen_nic_enable_int(adapter);
1589 }
1590
bea3348e 1591 return work_done;
3d396eb1
AK		 1592}
1593
1594#ifdef CONFIG_NET_POLL_CONTROLLER
1595static void netxen_nic_poll_controller(struct net_device *netdev)
1596{
3176ff3e 1597 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1598 disable_irq(adapter->irq);
1494a814 1599 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1600 enable_irq(adapter->irq);
1601}
1602#endif
3d396eb1
AK		 1603
1604static struct pci_driver netxen_driver = {
1605 .name = netxen_nic_driver_name,
1606 .id_table = netxen_pci_tbl,
1607 .probe = netxen_nic_probe,
1608 .remove = __devexit_p(netxen_nic_remove)
1609};
1610
1611/* Driver Registration on NetXen card */
1612
1613static int __init netxen_init_module(void)
1614{
79ea13ce 1615 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1616 return -ENOMEM;
1617
184231bd 1618 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1619}
1620
1621module_init(netxen_init_module);
1622
1623static void __exit netxen_exit_module(void)
1624{
3d396eb1 1625 pci_unregister_driver(&netxen_driver);
9de06610 1626 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1627}
1628
1629module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)