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netdevice: safe convert to netdev_priv() #part-2
[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>
c9bdd4b5 42#include <net/ip.h>
1494a814 43
3d396eb1
AK		 44MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45MODULE_LICENSE("GPL");
46MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
47
ceded32f 48char netxen_nic_driver_name[] = "netxen_nic";
3d396eb1 49static char netxen_nic_driver_string[] = "NetXen Network Driver version "
cb8011ad 50 NETXEN_NIC_LINUX_VERSIONID;
3d396eb1 51
2956640d
DP		 52static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
53
54/* Default to restricted 1G auto-neg mode */
55static int wol_port_mode = 5;
56
57static int use_msi = 1;
58
59static int use_msi_x = 1;
60
3d396eb1
AK		 61/* Local functions to NetXen NIC driver */
62static int __devinit netxen_nic_probe(struct pci_dev *pdev,
2956640d 63 const struct pci_device_id *ent);
3d396eb1
AK		 64static void __devexit netxen_nic_remove(struct pci_dev *pdev);
65static int netxen_nic_open(struct net_device *netdev);
66static int netxen_nic_close(struct net_device *netdev);
67static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
68static void netxen_tx_timeout(struct net_device *netdev);
6d5aefb8 69static void netxen_tx_timeout_task(struct work_struct *work);
3d396eb1 70static void netxen_watchdog(unsigned long);
bea3348e 71static int netxen_nic_poll(struct napi_struct *napi, int budget);
3d396eb1
AK		 72#ifdef CONFIG_NET_POLL_CONTROLLER
73static void netxen_nic_poll_controller(struct net_device *netdev);
74#endif
1494a814 75static irqreturn_t netxen_intr(int irq, void *data);
05aaa02d 76static irqreturn_t netxen_msi_intr(int irq, void *data);
3d396eb1
AK		 77
78/* PCI Device ID Table */
70081ac5 79#define ENTRY(device) \
040dec3b 80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
70081ac5
AV		 81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
82
3d396eb1 83static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
040dec3b
DP		 84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
3d396eb1
AK		 92 {0,}
93};
94
95MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
b1555130
AB		 97/*
98 * In netxen_nic_down(), we must wait for any pending callback requests into
99 * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
100 * reenabled right after it is deleted in netxen_nic_down().
101 * FLUSH_SCHEDULED_WORK() does this synchronization.
102 *
103 * Normally, schedule_work()/flush_scheduled_work() could have worked, but
104 * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
105 * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
106 * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
107 * linkwatch_event() to be executed which also attempts to acquire the rtnl
108 * lock thus causing a deadlock.
109 */
110
111static struct workqueue_struct *netxen_workq;
112#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
113#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
114
ed25ffa1
AK		 115static void netxen_watchdog(unsigned long);
116
7830b22c
DP		 117static uint32_t crb_cmd_producer[4] = {
118 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
119 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
120};
121
c9fc891f 122void
3ce06a32
DP		 123netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
124 uint32_t crb_producer)
3176ff3e 125{
3ce06a32
DP		 126 adapter->pci_write_normalize(adapter,
127 adapter->crb_addr_cmd_producer, crb_producer);
3176ff3e
MT		 128}
129
7830b22c
DP		 130static uint32_t crb_cmd_consumer[4] = {
131 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
132 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
133};
134
3ce06a32
DP		 135static inline void
136netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
137 u32 crb_consumer)
3176ff3e 138{
3ce06a32
DP		 139 adapter->pci_write_normalize(adapter,
140 adapter->crb_addr_cmd_consumer, crb_consumer);
3176ff3e
MT		 141}
142
2956640d 143static uint32_t msi_tgt_status[8] = {
443be796 144 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
2956640d
DP		 145 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
146 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
147 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
443be796
DP		 148};
149
2956640d
DP		 150static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
151
092bc571 152static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
4638aef1 153{
092bc571 154 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
4638aef1
SH		 155}
156
092bc571 157static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
4638aef1 158{
48bfd1e0 159 adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
4638aef1 160
092bc571
DP		 161 if (!NETXEN_IS_MSI_FAMILY(adapter))
162 adapter->pci_write_immediate(adapter,
163 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
4638aef1
SH		 164}
165
2956640d
DP		 166static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
167{
168 struct pci_dev *pdev = adapter->pdev;
169 int err;
170 uint64_t mask;
171
172#ifdef CONFIG_IA64
173 adapter->dma_mask = DMA_32BIT_MASK;
174#else
175 if (revision_id >= NX_P3_B0) {
176 /* should go to DMA_64BIT_MASK */
177 adapter->dma_mask = DMA_39BIT_MASK;
178 mask = DMA_39BIT_MASK;
179 } else if (revision_id == NX_P3_A2) {
180 adapter->dma_mask = DMA_39BIT_MASK;
181 mask = DMA_39BIT_MASK;
182 } else if (revision_id == NX_P2_C1) {
183 adapter->dma_mask = DMA_35BIT_MASK;
184 mask = DMA_35BIT_MASK;
185 } else {
186 adapter->dma_mask = DMA_32BIT_MASK;
187 mask = DMA_32BIT_MASK;
188 goto set_32_bit_mask;
189 }
190
191 /*
192 * Consistent DMA mask is set to 32 bit because it cannot be set to
193 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
194 * come off this pool.
195 */
196 if (pci_set_dma_mask(pdev, mask) == 0 &&
197 pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
198 adapter->pci_using_dac = 1;
199 return 0;
200 }
201#endif /* CONFIG_IA64 */
202
203set_32_bit_mask:
204 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
205 if (!err)
206 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
207 if (err) {
208 DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
209 return err;
210 }
211
212 adapter->pci_using_dac = 0;
213 return 0;
214}
215
216static void netxen_check_options(struct netxen_adapter *adapter)
217{
218 switch (adapter->ahw.boardcfg.board_type) {
219 case NETXEN_BRDTYPE_P3_HMEZ:
220 case NETXEN_BRDTYPE_P3_XG_LOM:
221 case NETXEN_BRDTYPE_P3_10G_CX4:
222 case NETXEN_BRDTYPE_P3_10G_CX4_LP:
223 case NETXEN_BRDTYPE_P3_IMEZ:
224 case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
a70f9393
DP		 225 case NETXEN_BRDTYPE_P3_10G_SFP_QT:
226 case NETXEN_BRDTYPE_P3_10G_SFP_CT:
2956640d
DP		 227 case NETXEN_BRDTYPE_P3_10G_XFP:
228 case NETXEN_BRDTYPE_P3_10000_BASE_T:
229 adapter->msix_supported = !!use_msi_x;
230 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
231 break;
232
233 case NETXEN_BRDTYPE_P2_SB31_10G:
234 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
235 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
236 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
237 adapter->msix_supported = 0;
238 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
239 break;
240
241 case NETXEN_BRDTYPE_P3_REF_QG:
242 case NETXEN_BRDTYPE_P3_4_GB:
243 case NETXEN_BRDTYPE_P3_4_GB_MM:
ec68db69 244 adapter->msix_supported = !!use_msi_x;
a70f9393
DP		 245 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
246 break;
247
2956640d
DP		 248 case NETXEN_BRDTYPE_P2_SB35_4G:
249 case NETXEN_BRDTYPE_P2_SB31_2G:
250 adapter->msix_supported = 0;
251 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
252 break;
253
254 default:
255 adapter->msix_supported = 0;
256 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
257
258 printk(KERN_WARNING "Unknown board type(0x%x)\n",
259 adapter->ahw.boardcfg.board_type);
260 break;
261 }
262
263 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
264 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
265 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
266
267 adapter->max_possible_rss_rings = 1;
268 return;
269}
270
271static int
272netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
273{
274 int ret = 0;
275
276 if (first_boot == 0x55555555) {
277 /* This is the first boot after power up */
278
279 /* PCI bus master workaround */
280 adapter->hw_read_wx(adapter,
281 NETXEN_PCIE_REG(0x4), &first_boot, 4);
282 if (!(first_boot & 0x4)) {
283 first_boot |= 0x4;
284 adapter->hw_write_wx(adapter,
285 NETXEN_PCIE_REG(0x4), &first_boot, 4);
286 adapter->hw_read_wx(adapter,
287 NETXEN_PCIE_REG(0x4), &first_boot, 4);
288 }
289
290 /* This is the first boot after power up */
291 adapter->hw_read_wx(adapter,
292 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
293 if (first_boot != 0x80000f) {
294 /* clear the register for future unloads/loads */
295 adapter->pci_write_normalize(adapter,
296 NETXEN_CAM_RAM(0x1fc), 0);
297 ret = -1;
298 }
299
300 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
301 /* Start P2 boot loader */
302 adapter->pci_write_normalize(adapter,
303 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
304 adapter->pci_write_normalize(adapter,
305 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
306 }
307 }
308 return ret;
309}
310
311static void netxen_set_port_mode(struct netxen_adapter *adapter)
312{
313 u32 val, data;
314
315 val = adapter->ahw.boardcfg.board_type;
316 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
317 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
318 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
319 data = NETXEN_PORT_MODE_802_3_AP;
320 adapter->hw_write_wx(adapter,
321 NETXEN_PORT_MODE_ADDR, &data, 4);
322 } else if (port_mode == NETXEN_PORT_MODE_XG) {
323 data = NETXEN_PORT_MODE_XG;
324 adapter->hw_write_wx(adapter,
325 NETXEN_PORT_MODE_ADDR, &data, 4);
326 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
327 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
328 adapter->hw_write_wx(adapter,
329 NETXEN_PORT_MODE_ADDR, &data, 4);
330 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
331 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
332 adapter->hw_write_wx(adapter,
333 NETXEN_PORT_MODE_ADDR, &data, 4);
334 } else {
335 data = NETXEN_PORT_MODE_AUTO_NEG;
336 adapter->hw_write_wx(adapter,
337 NETXEN_PORT_MODE_ADDR, &data, 4);
338 }
339
340 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
341 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
342 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
343 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
344 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
345 }
346 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
347 &wol_port_mode, 4);
348 }
349}
350
351#define PCI_CAP_ID_GEN 0x10
352
353static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
354{
355 u32 pdevfuncsave;
356 u32 c8c9value = 0;
357 u32 chicken = 0;
358 u32 control = 0;
359 int i, pos;
360 struct pci_dev *pdev;
361
2956640d
DP		 362 pdev = adapter->pdev;
363
364 adapter->hw_read_wx(adapter,
365 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
366 /* clear chicken3.25:24 */
367 chicken &= 0xFCFFFFFF;
368 /*
369 * if gen1 and B0, set F1020 - if gen 2, do nothing
370 * if gen2 set to F1000
371 */
372 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
373 if (pos == 0xC0) {
374 pci_read_config_dword(pdev, pos + 0x10, &control);
375 if ((control & 0x000F0000) != 0x00020000) {
376 /* set chicken3.24 if gen1 */
377 chicken |= 0x01000000;
378 }
379 printk(KERN_INFO "%s Gen2 strapping detected\n",
380 netxen_nic_driver_name);
381 c8c9value = 0xF1000;
382 } else {
383 /* set chicken3.24 if gen1 */
384 chicken |= 0x01000000;
385 printk(KERN_INFO "%s Gen1 strapping detected\n",
386 netxen_nic_driver_name);
387 if (adapter->ahw.revision_id == NX_P3_B0)
388 c8c9value = 0xF1020;
389 else
390 c8c9value = 0;
391
392 }
393 adapter->hw_write_wx(adapter,
394 NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
395
396 if (!c8c9value)
397 return;
398
399 pdevfuncsave = pdev->devfn;
400 if (pdevfuncsave & 0x07)
401 return;
402
403 for (i = 0; i < 8; i++) {
404 pci_read_config_dword(pdev, pos + 8, &control);
405 pci_read_config_dword(pdev, pos + 8, &control);
406 pci_write_config_dword(pdev, pos + 8, c8c9value);
407 pdev->devfn++;
408 }
409 pdev->devfn = pdevfuncsave;
410}
411
412static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
413{
414 u32 control;
415 int pos;
416
417 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
418 if (pos) {
419 pci_read_config_dword(pdev, pos, &control);
420 if (enable)
421 control |= PCI_MSIX_FLAGS_ENABLE;
422 else
423 control = 0;
424 pci_write_config_dword(pdev, pos, control);
425 }
426}
427
428static void netxen_init_msix_entries(struct netxen_adapter *adapter)
429{
430 int i;
431
432 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
433 adapter->msix_entries[i].entry = i;
434}
435
9dc28efe
DP		 436static int
437netxen_read_mac_addr(struct netxen_adapter *adapter)
438{
439 int i;
440 unsigned char *p;
441 __le64 mac_addr;
9dc28efe
DP		 442 struct net_device *netdev = adapter->netdev;
443 struct pci_dev *pdev = adapter->pdev;
444
445 if (netxen_is_flash_supported(adapter) != 0)
446 return -EIO;
447
448 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
449 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
450 return -EIO;
451 } else {
452 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
453 return -EIO;
454 }
455
456 p = (unsigned char *)&mac_addr;
457 for (i = 0; i < 6; i++)
458 netdev->dev_addr[i] = *(p + 5 - i);
459
460 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
461
462 /* set station address */
463
e174961c
JB		 464 if (!is_valid_ether_addr(netdev->perm_addr))
465 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
466 else
9dc28efe
DP		 467 adapter->macaddr_set(adapter, netdev->dev_addr);
468
469 return 0;
470}
471
3d396eb1
AK		 472/*
473 * netxen_nic_probe()
474 *
475 * The Linux system will invoke this after identifying the vendor ID and
476 * device Id in the pci_tbl supported by this module.
477 *
478 * A quad port card has one operational PCI config space, (function 0),
479 * which is used to access all four ports.
480 *
481 * This routine will initialize the adapter, and setup the global parameters
482 * along with the port's specific structure.
483 */
484static int __devinit
485netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
486{
487 struct net_device *netdev = NULL;
488 struct netxen_adapter *adapter = NULL;
ed25ffa1
AK		 489 void __iomem *mem_ptr0 = NULL;
490 void __iomem *mem_ptr1 = NULL;
491 void __iomem *mem_ptr2 = NULL;
6c80b18d
MT		 492 unsigned long first_page_group_end;
493 unsigned long first_page_group_start;
494
cb8011ad 495
a608ab9c 496 u8 __iomem *db_ptr = NULL;
2956640d
DP		 497 unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
498 int i = 0, err;
499 int first_driver, first_boot;
6c80b18d 500 u32 val;
3176ff3e 501 int pci_func_id = PCI_FUNC(pdev->devfn);
2956640d
DP		 502 struct netxen_legacy_intr_set *legacy_intrp;
503 uint8_t revision_id;
3d396eb1 504
dcd56fdb 505 if (pci_func_id == 0)
2956640d 506 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
6c80b18d 507
3176ff3e 508 if (pdev->class != 0x020000) {
dcd56fdb 509 printk(KERN_DEBUG "NetXen function %d, class %x will not "
3176ff3e 510 "be enabled.\n",pci_func_id, pdev->class);
ed25ffa1
AK		 511 return -ENODEV;
512 }
2956640d 513
11d89d63
DP		 514 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
515 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
516 "will not be enabled.\n",
517 NX_P3_A0, NX_P3_B1);
518 return -ENODEV;
519 }
520
3d396eb1
AK		 521 if ((err = pci_enable_device(pdev)))
522 return err;
2956640d 523
3d396eb1
AK		 524 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
525 err = -ENODEV;
526 goto err_out_disable_pdev;
527 }
528
529 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
530 goto err_out_disable_pdev;
531
532 pci_set_master(pdev);
3176ff3e
MT		 533
534 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
535 if(!netdev) {
536 printk(KERN_ERR"%s: Failed to allocate memory for the "
537 "device block.Check system memory resource"
538 " usage.\n", netxen_nic_driver_name);
539 goto err_out_free_res;
540 }
541
3176ff3e
MT		 542 SET_NETDEV_DEV(netdev, &pdev->dev);
543
4cf1653a 544 adapter = netdev_priv(netdev);
2956640d
DP		 545 adapter->netdev = netdev;
546 adapter->pdev = pdev;
13ba9c77 547 adapter->ahw.pci_func = pci_func_id;
2956640d
DP		 548
549 revision_id = pdev->revision;
550 adapter->ahw.revision_id = revision_id;
551
552 err = nx_set_dma_mask(adapter, revision_id);
553 if (err)
554 goto err_out_free_netdev;
555
3ce06a32
DP		 556 rwlock_init(&adapter->adapter_lock);
557 adapter->ahw.qdr_sn_window = -1;
558 adapter->ahw.ddr_mn_window = -1;
13ba9c77 559
3d396eb1
AK		 560 /* remap phys address */
561 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
562 mem_len = pci_resource_len(pdev, 0);
3ce06a32
DP		 563 pci_len0 = 0;
564
565 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
566 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
567 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
568 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
569 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
570 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
571 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
572 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
573 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
3d396eb1
AK		 574
575 /* 128 Meg of memory */
6c80b18d
MT		 576 if (mem_len == NETXEN_PCI_128MB_SIZE) {
577 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
578 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
579 SECOND_PAGE_GROUP_SIZE);
580 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
581 THIRD_PAGE_GROUP_SIZE);
582 first_page_group_start = FIRST_PAGE_GROUP_START;
583 first_page_group_end = FIRST_PAGE_GROUP_END;
584 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
585 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
586 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
587 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
588 first_page_group_start = 0;
589 first_page_group_end = 0;
3ce06a32
DP		 590 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
591 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
592 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
593 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
594 adapter->pci_write_immediate =
595 netxen_nic_pci_write_immediate_2M;
596 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
597 adapter->pci_write_normalize =
598 netxen_nic_pci_write_normalize_2M;
599 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
600 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
601 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
602
603 mem_ptr0 = ioremap(mem_base, mem_len);
604 pci_len0 = mem_len;
605 first_page_group_start = 0;
606 first_page_group_end = 0;
607
608 adapter->ahw.ddr_mn_window = 0;
609 adapter->ahw.qdr_sn_window = 0;
610
611 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
612 (pci_func_id * 0x20);
613 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
614 if (pci_func_id < 4)
615 adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
616 else
617 adapter->ahw.ms_win_crb +=
618 0xA0 + ((pci_func_id - 4) * 0x10);
6c80b18d 619 } else {
4790654c 620 err = -EIO;
6c80b18d
MT		 621 goto err_out_free_netdev;
622 }
cb8011ad 623
3ce06a32 624 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
cb8011ad 625
ed25ffa1
AK		 626 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
627 db_len = pci_resource_len(pdev, 4);
628
629 if (db_len == 0) {
630 printk(KERN_ERR "%s: doorbell is disabled\n",
2956640d 631 netxen_nic_driver_name);
ed25ffa1
AK		 632 err = -EIO;
633 goto err_out_iounmap;
634 }
635 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
636 db_len);
637
638 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
a608ab9c 639 if (!db_ptr) {
ed25ffa1 640 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
2956640d 641 netxen_nic_driver_name);
ed25ffa1
AK		 642 err = -EIO;
643 goto err_out_iounmap;
3d396eb1 644 }
ed25ffa1 645 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
3d396eb1 646
6c80b18d 647 adapter->ahw.pci_base0 = mem_ptr0;
3ce06a32 648 adapter->ahw.pci_len0 = pci_len0;
6c80b18d
MT		 649 adapter->ahw.first_page_group_start = first_page_group_start;
650 adapter->ahw.first_page_group_end = first_page_group_end;
651 adapter->ahw.pci_base1 = mem_ptr1;
652 adapter->ahw.pci_base2 = mem_ptr2;
653 adapter->ahw.db_base = db_ptr;
654 adapter->ahw.db_len = db_len;
3d396eb1 655
bea3348e 656 netif_napi_add(netdev, &adapter->napi,
2956640d
DP		 657 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
658
659 if (revision_id >= NX_P3_B0)
660 legacy_intrp = &legacy_intr[pci_func_id];
661 else
662 legacy_intrp = &legacy_intr[0];
663
664 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
665 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
666 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
667 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
bea3348e 668
2d1a3bbd 669 /* this will be read from FW later */
670 adapter->intr_scheme = -1;
443be796 671 adapter->msi_mode = -1;
2d1a3bbd 672
673 /* This will be reset for mezz cards */
3176ff3e 674 adapter->portnum = pci_func_id;
2d1a3bbd 675 adapter->status &= ~NETXEN_NETDEV_STATUS;
200eef20 676 adapter->rx_csum = 1;
623621b0 677 adapter->mc_enabled = 0;
83821a07 678 if (NX_IS_REVISION_P3(revision_id))
2956640d 679 adapter->max_mc_count = 38;
83821a07 680 else
2956640d 681 adapter->max_mc_count = 16;
3176ff3e
MT		 682
683 netdev->open = netxen_nic_open;
684 netdev->stop = netxen_nic_close;
685 netdev->hard_start_xmit = netxen_nic_xmit_frame;
4790654c 686 netdev->get_stats = netxen_nic_get_stats;
c9fc891f
DP		 687 if (NX_IS_REVISION_P3(revision_id))
688 netdev->set_multicast_list = netxen_p3_nic_set_multi;
689 else
690 netdev->set_multicast_list = netxen_p2_nic_set_multi;
3176ff3e
MT		 691 netdev->set_mac_address = netxen_nic_set_mac;
692 netdev->change_mtu = netxen_nic_change_mtu;
693 netdev->tx_timeout = netxen_tx_timeout;
05aaa02d 694 netdev->watchdog_timeo = 2*HZ;
3176ff3e
MT		 695
696 netxen_nic_change_mtu(netdev, netdev->mtu);
697
698 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
3176ff3e
MT		 699#ifdef CONFIG_NET_POLL_CONTROLLER
700 netdev->poll_controller = netxen_nic_poll_controller;
701#endif
702 /* ScatterGather support */
703 netdev->features = NETIF_F_SG;
704 netdev->features |= NETIF_F_IP_CSUM;
705 netdev->features |= NETIF_F_TSO;
cd1f8160
DP		 706 if (NX_IS_REVISION_P3(revision_id)) {
707 netdev->features |= NETIF_F_IPV6_CSUM;
2956640d 708 netdev->features |= NETIF_F_TSO6;
cd1f8160 709 }
3176ff3e 710
2956640d 711 if (adapter->pci_using_dac)
3176ff3e
MT		 712 netdev->features |= NETIF_F_HIGHDMA;
713
6c80b18d
MT		 714 /*
715 * Set the CRB window to invalid. If any register in window 0 is
716 * accessed it should set the window to 0 and then reset it to 1.
717 */
718 adapter->curr_window = 255;
719
dcd56fdb
DP		 720 if (netxen_nic_get_board_info(adapter) != 0) {
721 printk("%s: Error getting board config info.\n",
2956640d 722 netxen_nic_driver_name);
dcd56fdb
DP		 723 err = -EIO;
724 goto err_out_iounmap;
725 }
6c80b18d 726
6c80b18d
MT		 727 netxen_initialize_adapter_ops(adapter);
728
13ba9c77 729 /* Mezz cards have PCI function 0,2,3 enabled */
dc515f2e
DP		 730 switch (adapter->ahw.boardcfg.board_type) {
731 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
732 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
733 if (pci_func_id >= 2)
13ba9c77 734 adapter->portnum = pci_func_id - 2;
dc515f2e
DP		 735 break;
736 default:
737 break;
738 }
13ba9c77 739
2956640d
DP		 740 /*
741 * This call will setup various max rx/tx counts.
742 * It must be done before any buffer/ring allocations.
743 */
744 netxen_check_options(adapter);
3d396eb1 745
2956640d
DP		 746 first_driver = 0;
747 if (NX_IS_REVISION_P3(revision_id)) {
748 if (adapter->ahw.pci_func == 0)
749 first_driver = 1;
750 } else {
751 if (adapter->portnum == 0)
752 first_driver = 1;
753 }
3d396eb1 754
2956640d
DP		 755 if (first_driver) {
756 first_boot = adapter->pci_read_normalize(adapter,
757 NETXEN_CAM_RAM(0x1fc));
3176ff3e 758
2956640d
DP		 759 err = netxen_check_hw_init(adapter, first_boot);
760 if (err) {
761 printk(KERN_ERR "%s: error in init HW init sequence\n",
762 netxen_nic_driver_name);
763 goto err_out_iounmap;
3176ff3e 764 }
3176ff3e 765
2956640d
DP		 766 if (NX_IS_REVISION_P3(revision_id))
767 netxen_set_port_mode(adapter);
768
769 if (first_boot != 0x55555555) {
3ce06a32
DP		 770 adapter->pci_write_normalize(adapter,
771 CRB_CMDPEG_STATE, 0);
439b454e
DP		 772 netxen_pinit_from_rom(adapter, 0);
773 msleep(1);
774 netxen_load_firmware(adapter);
2956640d
DP		 775 }
776
777 if (NX_IS_REVISION_P3(revision_id))
778 netxen_pcie_strap_init(adapter);
779
780 if (NX_IS_REVISION_P2(revision_id)) {
623621b0
DP		 781
782 /* Initialize multicast addr pool owners */
783 val = 0x7654;
784 if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
785 val |= 0x0f000000;
786 netxen_crb_writelit_adapter(adapter,
787 NETXEN_MAC_ADDR_CNTL_REG, val);
788
6c80b18d 789 }
96acb6eb 790
2956640d
DP		 791 if ((first_boot == 0x55555555) &&
792 (NX_IS_REVISION_P2(revision_id))) {
793 /* Unlock the HW, prompting the boot sequence */
794 adapter->pci_write_normalize(adapter,
795 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1);
796 }
797
798 err = netxen_initialize_adapter_offload(adapter);
799 if (err)
800 goto err_out_iounmap;
6c80b18d
MT		 801
802 /*
803 * Tell the hardware our version number.
804 */
4790654c 805 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
6c80b18d
MT		 806 | ((_NETXEN_NIC_LINUX_MINOR << 8))
807 | (_NETXEN_NIC_LINUX_SUBVERSION);
3ce06a32 808 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
3d396eb1 809
3176ff3e
MT		 810 /* Handshake with the card before we register the devices. */
811 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
2956640d 812
2956640d
DP		 813 } /* first_driver */
814
815 netxen_nic_flash_print(adapter);
3d396eb1 816
d9e651bc
DP		 817 if (NX_IS_REVISION_P3(revision_id)) {
818 adapter->hw_read_wx(adapter,
819 NETXEN_MIU_MN_CONTROL, &val, 4);
820 adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
821 dev_info(&pdev->dev, "firmware running in %s mode\n",
822 adapter->ahw.cut_through ? "cut through" : "legacy");
823 }
824
3d396eb1 825 /*
6c80b18d 826 * See if the firmware gave us a virtual-physical port mapping.
3d396eb1 827 */
dcd56fdb 828 adapter->physical_port = adapter->portnum;
3ce06a32 829 i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
6c80b18d 830 if (i != 0x55555555)
3276fbad 831 adapter->physical_port = i;
6c80b18d 832
2956640d
DP		 833 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
834
835 netxen_set_msix_bit(pdev, 0);
836
837 if (NX_IS_REVISION_P3(revision_id)) {
838 if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
839 mem_len != NETXEN_PCI_2MB_SIZE)
840 adapter->msix_supported = 0;
841 }
842
843 if (adapter->msix_supported) {
844
845 netxen_init_msix_entries(adapter);
846
847 if (pci_enable_msix(pdev, adapter->msix_entries,
848 MSIX_ENTRIES_PER_ADAPTER))
849 goto request_msi;
850
851 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
852 netxen_set_msix_bit(pdev, 1);
853 dev_info(&pdev->dev, "using msi-x interrupts\n");
854
855 } else {
856request_msi:
857 if (use_msi && !pci_enable_msi(pdev)) {
858 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
859 dev_info(&pdev->dev, "using msi interrupts\n");
860 } else
861 dev_info(&pdev->dev, "using legacy interrupts\n");
862 }
863
864 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
865 netdev->irq = adapter->msix_entries[0].vector;
866 else
867 netdev->irq = pdev->irq;
868
869 err = netxen_receive_peg_ready(adapter);
870 if (err)
871 goto err_out_disable_msi;
872
873 init_timer(&adapter->watchdog_timer);
2956640d
DP		 874 adapter->watchdog_timer.function = &netxen_watchdog;
875 adapter->watchdog_timer.data = (unsigned long)adapter;
876 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
877 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
878
9dc28efe
DP		 879 err = netxen_read_mac_addr(adapter);
880 if (err)
881 dev_warn(&pdev->dev, "failed to read mac addr\n");
2956640d 882
3176ff3e
MT		 883 netif_carrier_off(netdev);
884 netif_stop_queue(netdev);
885
6c80b18d
MT		 886 if ((err = register_netdev(netdev))) {
887 printk(KERN_ERR "%s: register_netdev failed port #%d"
888 " aborting\n", netxen_nic_driver_name,
889 adapter->portnum);
890 err = -EIO;
2956640d 891 goto err_out_disable_msi;
6c80b18d
MT		 892 }
893
894 pci_set_drvdata(pdev, adapter);
3d396eb1 895
2956640d
DP		 896 switch (adapter->ahw.board_type) {
897 case NETXEN_NIC_GBE:
898 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
899 adapter->netdev->name);
900 break;
901 case NETXEN_NIC_XGBE:
902 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
903 adapter->netdev->name);
904 break;
3d396eb1 905 }
3d396eb1 906
2956640d
DP		 907 return 0;
908
909err_out_disable_msi:
910 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
911 pci_disable_msix(pdev);
6c80b18d
MT		 912 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
913 pci_disable_msi(pdev);
914
2956640d
DP		 915 if (first_driver)
916 netxen_free_adapter_offload(adapter);
3d396eb1 917
2956640d 918err_out_iounmap:
ed25ffa1
AK		 919 if (db_ptr)
920 iounmap(db_ptr);
921
ed25ffa1
AK		 922 if (mem_ptr0)
923 iounmap(mem_ptr0);
924 if (mem_ptr1)
925 iounmap(mem_ptr1);
926 if (mem_ptr2)
927 iounmap(mem_ptr2);
cb8011ad 928
6c80b18d
MT		 929err_out_free_netdev:
930 free_netdev(netdev);
931
932err_out_free_res:
3d396eb1 933 pci_release_regions(pdev);
6c80b18d
MT		 934
935err_out_disable_pdev:
2956640d 936 pci_set_drvdata(pdev, NULL);
3d396eb1
AK		 937 pci_disable_device(pdev);
938 return err;
939}
940
941static void __devexit netxen_nic_remove(struct pci_dev *pdev)
942{
943 struct netxen_adapter *adapter;
3176ff3e 944 struct net_device *netdev;
3d396eb1 945
6c80b18d 946 adapter = pci_get_drvdata(pdev);
3d396eb1
AK		 947 if (adapter == NULL)
948 return;
949
6c80b18d
MT		 950 netdev = adapter->netdev;
951
96acb6eb
DP		 952 unregister_netdev(netdev);
953
96acb6eb 954 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
3d396eb1 955 netxen_free_hw_resources(adapter);
9e410778 956 netxen_release_rx_buffers(adapter);
2956640d 957 netxen_free_sw_resources(adapter);
96acb6eb 958 }
3d396eb1 959
439b454e
DP		 960 if (adapter->portnum == 0)
961 netxen_free_adapter_offload(adapter);
96acb6eb 962
3052246c 963 if (adapter->irq)
964 free_irq(adapter->irq, adapter);
965
2956640d
DP		 966 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
967 pci_disable_msix(pdev);
3052246c 968 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
969 pci_disable_msi(pdev);
970
6c80b18d
MT		 971 iounmap(adapter->ahw.db_base);
972 iounmap(adapter->ahw.pci_base0);
973 iounmap(adapter->ahw.pci_base1);
974 iounmap(adapter->ahw.pci_base2);
595e3fb8
MT		 975
976 pci_release_regions(pdev);
3052246c 977 pci_disable_device(pdev);
595e3fb8
MT		 978 pci_set_drvdata(pdev, NULL);
979
6c80b18d 980 free_netdev(netdev);
3d396eb1
AK		 981}
982
983/*
984 * Called when a network interface is made active
985 * @returns 0 on success, negative value on failure
986 */
987static int netxen_nic_open(struct net_device *netdev)
988{
4cf1653a 989 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 990 int err = 0;
991 int ctx, ring;
05aaa02d
DP		 992 irq_handler_t handler;
993 unsigned long flags = IRQF_SAMPLE_RANDOM;
3d396eb1 994
dcd56fdb
DP		 995 if (adapter->driver_mismatch)
996 return -EIO;
997
3d396eb1
AK		 998 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
999 err = netxen_init_firmware(adapter);
1000 if (err != 0) {
1001 printk(KERN_ERR "Failed to init firmware\n");
1002 return -EIO;
1003 }
3d396eb1 1004
83821a07
DP		 1005 if (adapter->fw_major < 4)
1006 adapter->max_rds_rings = 3;
1007 else
1008 adapter->max_rds_rings = 2;
1009
2956640d 1010 err = netxen_alloc_sw_resources(adapter);
3d396eb1 1011 if (err) {
2956640d
DP		 1012 printk(KERN_ERR "%s: Error in setting sw resources\n",
1013 netdev->name);
3d396eb1
AK		 1014 return err;
1015 }
2956640d
DP		 1016
1017 netxen_nic_clear_stats(adapter);
1018
1019 err = netxen_alloc_hw_resources(adapter);
1020 if (err) {
1021 printk(KERN_ERR "%s: Error in setting hw resources\n",
1022 netdev->name);
1023 goto err_out_free_sw;
1024 }
1025
092bc571
DP		 1026 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
1027 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
1028 printk(KERN_ERR "%s: Firmware interrupt scheme is "
1029 "incompatible with driver\n",
1030 netdev->name);
1031 adapter->driver_mismatch = 1;
1032 goto err_out_free_hw;
1033 }
1034
2956640d
DP		 1035 if (adapter->fw_major < 4) {
1036 adapter->crb_addr_cmd_producer =
1037 crb_cmd_producer[adapter->portnum];
1038 adapter->crb_addr_cmd_consumer =
1039 crb_cmd_consumer[adapter->portnum];
2956640d 1040
83821a07
DP		 1041 netxen_nic_update_cmd_producer(adapter, 0);
1042 netxen_nic_update_cmd_consumer(adapter, 0);
1043 }
2956640d 1044
3d396eb1 1045 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
48bfd1e0 1046 for (ring = 0; ring < adapter->max_rds_rings; ring++)
3d396eb1 1047 netxen_post_rx_buffers(adapter, ctx, ring);
3d396eb1 1048 }
2956640d 1049 if (NETXEN_IS_MSI_FAMILY(adapter))
05aaa02d
DP		 1050 handler = netxen_msi_intr;
1051 else {
1052 flags |= IRQF_SHARED;
1053 handler = netxen_intr;
1054 }
2956640d 1055 adapter->irq = netdev->irq;
05aaa02d
DP		 1056 err = request_irq(adapter->irq, handler,
1057 flags, netdev->name, adapter);
3d396eb1
AK		 1058 if (err) {
1059 printk(KERN_ERR "request_irq failed with: %d\n", err);
9e410778 1060 goto err_out_free_rxbuf;
3d396eb1 1061 }
ed25ffa1
AK		 1062
1063 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1064 }
2956640d 1065
3d396eb1
AK		 1066 /* Done here again so that even if phantom sw overwrote it,
1067 * we set it */
c9fc891f 1068 err = adapter->init_port(adapter, adapter->physical_port);
2956640d 1069 if (err) {
595e3fb8
MT		 1070 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1071 netxen_nic_driver_name, adapter->portnum);
2956640d 1072 goto err_out_free_irq;
595e3fb8 1073 }
2956640d 1074 adapter->macaddr_set(adapter, netdev->dev_addr);
595e3fb8 1075
3176ff3e 1076 netxen_nic_set_link_parameters(adapter);
3d396eb1 1077
c9fc891f 1078 netdev->set_multicast_list(netdev);
9ad27643 1079 if (adapter->set_mtu)
c9fc891f 1080 adapter->set_mtu(adapter, netdev->mtu);
ed25ffa1 1081
922c4f2c 1082 adapter->ahw.linkup = 0;
dcd56fdb 1083 mod_timer(&adapter->watchdog_timer, jiffies);
05aaa02d
DP		 1084
1085 napi_enable(&adapter->napi);
1086 netxen_nic_enable_int(adapter);
1087
dcd56fdb 1088 netif_start_queue(netdev);
3d396eb1
AK		 1089
1090 return 0;
2956640d
DP		 1091
1092err_out_free_irq:
1093 free_irq(adapter->irq, adapter);
9e410778
DP		 1094err_out_free_rxbuf:
1095 netxen_release_rx_buffers(adapter);
092bc571 1096err_out_free_hw:
2956640d
DP		 1097 netxen_free_hw_resources(adapter);
1098err_out_free_sw:
1099 netxen_free_sw_resources(adapter);
1100 return err;
3d396eb1
AK		 1101}
1102
1103/*
1104 * netxen_nic_close - Disables a network interface entry point
1105 */
1106static int netxen_nic_close(struct net_device *netdev)
1107{
3176ff3e 1108 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1109
1110 netif_carrier_off(netdev);
1111 netif_stop_queue(netdev);
bea3348e 1112 napi_disable(&adapter->napi);
3d396eb1 1113
72b0a7a8 1114 if (adapter->stop_port)
1115 adapter->stop_port(adapter);
1116
e01872af 1117 netxen_nic_disable_int(adapter);
1118
2956640d
DP		 1119 netxen_release_tx_buffers(adapter);
1120
922c4f2c
DP		 1121 FLUSH_SCHEDULED_WORK();
1122 del_timer_sync(&adapter->watchdog_timer);
3d396eb1
AK		 1123
1124 return 0;
1125}
1126
cd1f8160
DP		 1127void netxen_tso_check(struct netxen_adapter *adapter,
1128 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1129{
1130 if (desc->mss) {
1131 desc->total_hdr_length = (sizeof(struct ethhdr) +
1132 ip_hdrlen(skb) + tcp_hdrlen(skb));
1133
1134 if ((NX_IS_REVISION_P3(adapter->ahw.revision_id)) &&
1135 (skb->protocol == htons(ETH_P_IPV6)))
1136 netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO6);
1137 else
1138 netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO);
1139
1140 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1141 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
1142 netxen_set_cmd_desc_opcode(desc, TX_TCP_PKT);
1143 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1144 netxen_set_cmd_desc_opcode(desc, TX_UDP_PKT);
1145 else
1146 return;
1147 }
1148 desc->tcp_hdr_offset = skb_transport_offset(skb);
1149 desc->ip_hdr_offset = skb_network_offset(skb);
1150}
1151
3d396eb1
AK		 1152static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1153{
3176ff3e 1154 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1
AK		 1155 struct netxen_hardware_context *hw = &adapter->ahw;
1156 unsigned int first_seg_len = skb->len - skb->data_len;
1157 struct netxen_skb_frag *buffrag;
1158 unsigned int i;
1159
ba53e6b4 1160 u32 producer, consumer;
3d396eb1
AK		 1161 u32 saved_producer = 0;
1162 struct cmd_desc_type0 *hwdesc;
1163 int k;
1164 struct netxen_cmd_buffer *pbuf = NULL;
3d396eb1 1165 int frag_count;
3d396eb1 1166 int no_of_desc;
ba53e6b4 1167 u32 num_txd = adapter->max_tx_desc_count;
3d396eb1 1168
3d396eb1
AK		 1169 frag_count = skb_shinfo(skb)->nr_frags + 1;
1170
3d396eb1
AK		 1171 /* There 4 fragments per descriptor */
1172 no_of_desc = (frag_count + 3) >> 2;
cd1f8160 1173 if (netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) {
cb8011ad
AK		 1174 if (skb_shinfo(skb)->gso_size > 0) {
1175
3d396eb1 1176 no_of_desc++;
ab6a5bb6 1177 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
c9bdd4b5 1178 sizeof(struct ethhdr)) >
ed25ffa1 1179 (sizeof(struct cmd_desc_type0) - 2)) {
cb8011ad
AK		 1180 no_of_desc++;
1181 }
3d396eb1
AK		 1182 }
1183 }
53a01e00 1184
ba53e6b4
DP		 1185 producer = adapter->cmd_producer;
1186 smp_mb();
1187 consumer = adapter->last_cmd_consumer;
1188 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1189 netif_stop_queue(netdev);
1190 smp_mb();
1191 return NETDEV_TX_BUSY;
53a01e00 1192 }
3d396eb1 1193
3d396eb1 1194 /* Copy the descriptors into the hardware */
3d396eb1
AK		 1195 saved_producer = producer;
1196 hwdesc = &hw->cmd_desc_head[producer];
1197 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
1198 /* Take skb->data itself */
1199 pbuf = &adapter->cmd_buf_arr[producer];
cd1f8160
DP		 1200 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1201 skb_shinfo(skb)->gso_size > 0) {
a608ab9c 1202 pbuf->mss = skb_shinfo(skb)->gso_size;
ed33ebe4 1203 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
3d396eb1
AK		 1204 } else {
1205 pbuf->mss = 0;
1206 hwdesc->mss = 0;
1207 }
3d396eb1
AK		 1208 pbuf->total_length = skb->len;
1209 pbuf->skb = skb;
1210 pbuf->cmd = TX_ETHER_PKT;
1211 pbuf->frag_count = frag_count;
3176ff3e 1212 pbuf->port = adapter->portnum;
3d396eb1 1213 buffrag = &pbuf->frag_array[0];
3176ff3e 1214 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
3d396eb1
AK		 1215 PCI_DMA_TODEVICE);
1216 buffrag->length = first_seg_len;
ed25ffa1
AK		 1217 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
1218 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
1219 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
3d396eb1 1220
3176ff3e 1221 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
6c80b18d 1222 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
3d396eb1
AK		 1223 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
1224 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1225
1226 for (i = 1, k = 1; i < frag_count; i++, k++) {
1227 struct skb_frag_struct *frag;
1228 int len, temp_len;
1229 unsigned long offset;
1230 dma_addr_t temp_dma;
1231
1232 /* move to next desc. if there is a need */
1233 if ((i & 0x3) == 0) {
1234 k = 0;
ba53e6b4 1235 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1236 hwdesc = &hw->cmd_desc_head[producer];
1237 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
53a01e00 1238 pbuf = &adapter->cmd_buf_arr[producer];
1239 pbuf->skb = NULL;
3d396eb1
AK		 1240 }
1241 frag = &skb_shinfo(skb)->frags[i - 1];
1242 len = frag->size;
1243 offset = frag->page_offset;
1244
1245 temp_len = len;
3176ff3e 1246 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
3d396eb1
AK		 1247 len, PCI_DMA_TODEVICE);
1248
1249 buffrag++;
1250 buffrag->dma = temp_dma;
1251 buffrag->length = temp_len;
1252
3d396eb1
AK		 1253 switch (k) {
1254 case 0:
1255 hwdesc->buffer1_length = cpu_to_le16(temp_len);
1256 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1257 break;
1258 case 1:
1259 hwdesc->buffer2_length = cpu_to_le16(temp_len);
1260 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1261 break;
1262 case 2:
1263 hwdesc->buffer3_length = cpu_to_le16(temp_len);
1264 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1265 break;
1266 case 3:
a608ab9c 1267 hwdesc->buffer4_length = cpu_to_le16(temp_len);
3d396eb1
AK		 1268 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1269 break;
1270 }
1271 frag++;
1272 }
ba53e6b4 1273 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1274
1275 /* might change opcode to TX_TCP_LSO */
1276 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
1277
1278 /* For LSO, we need to copy the MAC/IP/TCP headers into
1279 * the descriptor ring
1280 */
ed25ffa1
AK		 1281 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1282 == TX_TCP_LSO) {
3d396eb1
AK		 1283 int hdr_len, first_hdr_len, more_hdr;
1284 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
ed25ffa1
AK		 1285 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1286 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
3d396eb1
AK		 1287 more_hdr = 1;
1288 } else {
1289 first_hdr_len = hdr_len;
1290 more_hdr = 0;
1291 }
1292 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1293 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1294 pbuf = &adapter->cmd_buf_arr[producer];
1295 pbuf->skb = NULL;
3d396eb1
AK		 1296
1297 /* copy the first 64 bytes */
ed25ffa1 1298 memcpy(((void *)hwdesc) + 2,
3d396eb1 1299 (void *)(skb->data), first_hdr_len);
ba53e6b4 1300 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1301
1302 if (more_hdr) {
1303 hwdesc = &hw->cmd_desc_head[producer];
53a01e00 1304 pbuf = &adapter->cmd_buf_arr[producer];
1305 pbuf->skb = NULL;
3d396eb1
AK		 1306 /* copy the next 64 bytes - should be enough except
1307 * for pathological case
1308 */
d626f62b
ACM		 1309 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1310 hwdesc,
1311 (hdr_len -
1312 first_hdr_len));
ba53e6b4 1313 producer = get_next_index(producer, num_txd);
3d396eb1
AK		 1314 }
1315 }
6c80b18d 1316
ba53e6b4 1317 adapter->cmd_producer = producer;
5dc16268 1318 adapter->stats.txbytes += skb->len;
6c80b18d 1319
ba53e6b4 1320 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
3d396eb1 1321
ba53e6b4 1322 adapter->stats.xmitcalled++;
3d396eb1
AK		 1323 netdev->trans_start = jiffies;
1324
3d396eb1
AK		 1325 return NETDEV_TX_OK;
1326}
1327
a97342f9
DP		 1328static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1329{
1330 struct net_device *netdev = adapter->netdev;
1331 uint32_t temp, temp_state, temp_val;
1332 int rv = 0;
1333
1334 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1335
1336 temp_state = nx_get_temp_state(temp);
1337 temp_val = nx_get_temp_val(temp);
1338
1339 if (temp_state == NX_TEMP_PANIC) {
1340 printk(KERN_ALERT
1341 "%s: Device temperature %d degrees C exceeds"
1342 " maximum allowed. Hardware has been shut down.\n",
1343 netxen_nic_driver_name, temp_val);
1344
1345 netif_carrier_off(netdev);
1346 netif_stop_queue(netdev);
1347 rv = 1;
1348 } else if (temp_state == NX_TEMP_WARN) {
1349 if (adapter->temp == NX_TEMP_NORMAL) {
1350 printk(KERN_ALERT
1351 "%s: Device temperature %d degrees C "
1352 "exceeds operating range."
1353 " Immediate action needed.\n",
1354 netxen_nic_driver_name, temp_val);
1355 }
1356 } else {
1357 if (adapter->temp == NX_TEMP_WARN) {
1358 printk(KERN_INFO
1359 "%s: Device temperature is now %d degrees C"
1360 " in normal range.\n", netxen_nic_driver_name,
1361 temp_val);
1362 }
1363 }
1364 adapter->temp = temp_state;
1365 return rv;
1366}
1367
1368static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1369{
1370 struct net_device *netdev = adapter->netdev;
1371 u32 val, port, linkup;
1372
1373 port = adapter->physical_port;
1374
24a7a455
DP		 1375 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1376 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1377 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1378 linkup = (val == XG_LINK_UP_P3);
c9fc891f 1379 } else {
24a7a455
DP		 1380 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1381 if (adapter->ahw.board_type == NETXEN_NIC_GBE)
1382 linkup = (val >> port) & 1;
1383 else {
c9fc891f
DP		 1384 val = (val >> port*8) & 0xff;
1385 linkup = (val == XG_LINK_UP);
c9fc891f 1386 }
a97342f9
DP		 1387 }
1388
1389 if (adapter->ahw.linkup && !linkup) {
1390 printk(KERN_INFO "%s: %s NIC Link is down\n",
1391 netxen_nic_driver_name, netdev->name);
1392 adapter->ahw.linkup = 0;
1393 if (netif_running(netdev)) {
1394 netif_carrier_off(netdev);
1395 netif_stop_queue(netdev);
1396 }
1397 } else if (!adapter->ahw.linkup && linkup) {
1398 printk(KERN_INFO "%s: %s NIC Link is up\n",
1399 netxen_nic_driver_name, netdev->name);
1400 adapter->ahw.linkup = 1;
1401 if (netif_running(netdev)) {
1402 netif_carrier_on(netdev);
1403 netif_wake_queue(netdev);
1404 }
1405 }
1406}
1407
3d396eb1
AK		 1408static void netxen_watchdog(unsigned long v)
1409{
1410 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
ed25ffa1
AK		 1411
1412 SCHEDULE_WORK(&adapter->watchdog_task);
3d396eb1
AK		 1413}
1414
a97342f9
DP		 1415void netxen_watchdog_task(struct work_struct *work)
1416{
1417 struct netxen_adapter *adapter =
1418 container_of(work, struct netxen_adapter, watchdog_task);
1419
1420 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1421 return;
1422
1423 netxen_nic_handle_phy_intr(adapter);
1424
922c4f2c
DP		 1425 if (netif_running(adapter->netdev))
1426 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
a97342f9
DP		 1427}
1428
3d396eb1
AK		 1429static void netxen_tx_timeout(struct net_device *netdev)
1430{
3176ff3e
MT		 1431 struct netxen_adapter *adapter = (struct netxen_adapter *)
1432 netdev_priv(netdev);
1433 SCHEDULE_WORK(&adapter->tx_timeout_task);
3d396eb1
AK		 1434}
1435
6d5aefb8 1436static void netxen_tx_timeout_task(struct work_struct *work)
3d396eb1 1437{
4790654c 1438 struct netxen_adapter *adapter =
3176ff3e 1439 container_of(work, struct netxen_adapter, tx_timeout_task);
3d396eb1
AK		 1440
1441 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
6c80b18d 1442 netxen_nic_driver_name, adapter->netdev->name);
3d396eb1 1443
ba53e6b4
DP		 1444 netxen_nic_disable_int(adapter);
1445 napi_disable(&adapter->napi);
1446
6c80b18d 1447 adapter->netdev->trans_start = jiffies;
ba53e6b4
DP		 1448
1449 napi_enable(&adapter->napi);
1450 netxen_nic_enable_int(adapter);
6c80b18d 1451 netif_wake_queue(adapter->netdev);
3d396eb1
AK		 1452}
1453
a97342f9
DP		 1454/*
1455 * netxen_nic_get_stats - Get System Network Statistics
1456 * @netdev: network interface device structure
1457 */
1458struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1459{
1460 struct netxen_adapter *adapter = netdev_priv(netdev);
1461 struct net_device_stats *stats = &adapter->net_stats;
1462
1463 memset(stats, 0, sizeof(*stats));
1464
1465 /* total packets received */
1466 stats->rx_packets = adapter->stats.no_rcv;
1467 /* total packets transmitted */
1468 stats->tx_packets = adapter->stats.xmitedframes +
1469 adapter->stats.xmitfinished;
1470 /* total bytes received */
1471 stats->rx_bytes = adapter->stats.rxbytes;
1472 /* total bytes transmitted */
1473 stats->tx_bytes = adapter->stats.txbytes;
1474 /* bad packets received */
1475 stats->rx_errors = adapter->stats.rcvdbadskb;
1476 /* packet transmit problems */
1477 stats->tx_errors = adapter->stats.nocmddescriptor;
1478 /* no space in linux buffers */
1479 stats->rx_dropped = adapter->stats.rxdropped;
1480 /* no space available in linux */
1481 stats->tx_dropped = adapter->stats.txdropped;
1482
1483 return stats;
1484}
1485
e4c93c81 1486static irqreturn_t netxen_intr(int irq, void *data)
3d396eb1 1487{
1daec86a 1488 struct netxen_adapter *adapter = data;
d71e1be8
DP		 1489 u32 status = 0;
1490
1491 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1492
1493 if (!(status & adapter->legacy_intr.int_vec_bit))
05aaa02d 1494 return IRQ_NONE;
e01872af 1495
d71e1be8
DP		 1496 if (adapter->ahw.revision_id >= NX_P3_B1) {
1497 /* check interrupt state machine, to be sure */
1498 status = adapter->pci_read_immediate(adapter,
1499 ISR_INT_STATE_REG);
1500 if (!ISR_LEGACY_INT_TRIGGERED(status))
1501 return IRQ_NONE;
1502
092bc571
DP		 1503 } else {
1504 unsigned long our_int = 0;
d71e1be8
DP		 1505
1506 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
092bc571 1507
d71e1be8 1508 /* not our interrupt */
092bc571 1509 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
d71e1be8
DP		 1510 return IRQ_NONE;
1511
092bc571
DP		 1512 /* claim interrupt */
1513 adapter->pci_write_normalize(adapter,
1514 CRB_INT_VECTOR, (our_int & 0xffffffff));
e01872af 1515 }
1516
092bc571
DP		 1517 /* clear interrupt */
1518 if (adapter->fw_major < 4)
1519 netxen_nic_disable_int(adapter);
1520
1521 adapter->pci_write_immediate(adapter,
1522 adapter->legacy_intr.tgt_status_reg,
1523 0xffffffff);
1524 /* read twice to ensure write is flushed */
1525 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1526 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1527
1528 napi_schedule(&adapter->napi);
3d396eb1
AK		 1529
1530 return IRQ_HANDLED;
1531}
1532
e4c93c81 1533static irqreturn_t netxen_msi_intr(int irq, void *data)
05aaa02d
DP		 1534{
1535 struct netxen_adapter *adapter = data;
1536
092bc571
DP		 1537 /* clear interrupt */
1538 adapter->pci_write_immediate(adapter,
1539 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1540
1541 napi_schedule(&adapter->napi);
05aaa02d
DP		 1542 return IRQ_HANDLED;
1543}
1544
bea3348e 1545static int netxen_nic_poll(struct napi_struct *napi, int budget)
3d396eb1 1546{
bea3348e 1547 struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
05aaa02d 1548 int tx_complete;
3d396eb1 1549 int ctx;
bea3348e 1550 int work_done;
3d396eb1 1551
05aaa02d 1552 tx_complete = netxen_process_cmd_ring(adapter);
3d396eb1 1553
80922fbc 1554 work_done = 0;
3d396eb1
AK		 1555 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1556 /*
1557 * Fairness issue. This will give undue weight to the
1558 * receive context 0.
1559 */
1560
1561 /*
1562 * To avoid starvation, we give each of our receivers,
1563 * a fraction of the quota. Sometimes, it might happen that we
1564 * have enough quota to process every packet, but since all the
1565 * packets are on one context, it gets only half of the quota,
1566 * and ends up not processing it.
1567 */
bea3348e
SH		 1568 work_done += netxen_process_rcv_ring(adapter, ctx,
1569 budget / MAX_RCV_CTX);
3d396eb1
AK		 1570 }
1571
05aaa02d
DP		 1572 if ((work_done < budget) && tx_complete) {
1573 netif_rx_complete(adapter->netdev, &adapter->napi);
3d396eb1
AK		 1574 netxen_nic_enable_int(adapter);
1575 }
1576
bea3348e 1577 return work_done;
3d396eb1
AK		 1578}
1579
1580#ifdef CONFIG_NET_POLL_CONTROLLER
1581static void netxen_nic_poll_controller(struct net_device *netdev)
1582{
3176ff3e 1583 struct netxen_adapter *adapter = netdev_priv(netdev);
3d396eb1 1584 disable_irq(adapter->irq);
1494a814 1585 netxen_intr(adapter->irq, adapter);
3d396eb1
AK		 1586 enable_irq(adapter->irq);
1587}
1588#endif
3d396eb1
AK		 1589
1590static struct pci_driver netxen_driver = {
1591 .name = netxen_nic_driver_name,
1592 .id_table = netxen_pci_tbl,
1593 .probe = netxen_nic_probe,
1594 .remove = __devexit_p(netxen_nic_remove)
1595};
1596
1597/* Driver Registration on NetXen card */
1598
1599static int __init netxen_init_module(void)
1600{
79ea13ce 1601 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
ed25ffa1
AK		 1602 return -ENOMEM;
1603
184231bd 1604 return pci_register_driver(&netxen_driver);
3d396eb1
AK		 1605}
1606
1607module_init(netxen_init_module);
1608
1609static void __exit netxen_exit_module(void)
1610{
3d396eb1 1611 pci_unregister_driver(&netxen_driver);
9de06610 1612 destroy_workqueue(netxen_workq);
3d396eb1
AK		 1613}
1614
1615module_exit(netxen_exit_module);
Linux 6.x block layer and io_uring tree(s)