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[PARISC] fix "ENTRY" macro redefinition
[wrt350n-kernel.git] / drivers / net / netxen / netxen_nic_main.c
blob2c5c6d20e6e91c8ca8609e67e2ec474e9b53e797
1 /*
2 * Copyright (C) 2003 - 2006 NetXen, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen,
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
34 #include <linux/vmalloc.h>
35 #include <linux/highmem.h>
36 #include "netxen_nic_hw.h"
37
38 #include "netxen_nic.h"
39 #include "netxen_nic_phan_reg.h"
40
41 #include <linux/dma-mapping.h>
42 #include <linux/vmalloc.h>
43 #include <net/ip.h>
44
45 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
48
49 char netxen_nic_driver_name[] = "netxen-nic";
50 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
51 NETXEN_NIC_LINUX_VERSIONID;
52
53 #define NETXEN_NETDEV_WEIGHT 120
54 #define NETXEN_ADAPTER_UP_MAGIC 777
55 #define NETXEN_NIC_PEG_TUNE 0
56
57 u8 nx_p2_id = NX_P2_C0;
58
59 #define DMA_32BIT_MASK 0x00000000ffffffffULL
60 #define DMA_35BIT_MASK 0x00000007ffffffffULL
61
62 /* Local functions to NetXen NIC driver */
63 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
64 const struct pci_device_id *ent);
65 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
66 static int netxen_nic_open(struct net_device *netdev);
67 static int netxen_nic_close(struct net_device *netdev);
68 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
69 static void netxen_tx_timeout(struct net_device *netdev);
70 static void netxen_tx_timeout_task(struct work_struct *work);
71 static void netxen_watchdog(unsigned long);
72 static int netxen_handle_int(struct netxen_adapter *, struct net_device *);
73 static int netxen_nic_poll(struct net_device *dev, int *budget);
74 #ifdef CONFIG_NET_POLL_CONTROLLER
75 static void netxen_nic_poll_controller(struct net_device *netdev);
76 #endif
77 static irqreturn_t netxen_intr(int irq, void *data);
78
79 int physical_port[] = {0, 1, 2, 3};
80
81 /* PCI Device ID Table */
82 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
83 {PCI_DEVICE(0x4040, 0x0001)},
84 {PCI_DEVICE(0x4040, 0x0002)},
85 {PCI_DEVICE(0x4040, 0x0003)},
86 {PCI_DEVICE(0x4040, 0x0004)},
87 {PCI_DEVICE(0x4040, 0x0005)},
88 {PCI_DEVICE(0x4040, 0x0024)},
89 {PCI_DEVICE(0x4040, 0x0025)},
90 {0,}
91 };
92
93 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
94
95 struct workqueue_struct *netxen_workq;
96 static void netxen_watchdog(unsigned long);
97
98 static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
99 uint32_t crb_producer)
100 {
101 switch (adapter->portnum) {
102 case 0:
103 writel(crb_producer, NETXEN_CRB_NORMALIZE
104 (adapter, CRB_CMD_PRODUCER_OFFSET));
105 return;
106 case 1:
107 writel(crb_producer, NETXEN_CRB_NORMALIZE
108 (adapter, CRB_CMD_PRODUCER_OFFSET_1));
109 return;
110 case 2:
111 writel(crb_producer, NETXEN_CRB_NORMALIZE
112 (adapter, CRB_CMD_PRODUCER_OFFSET_2));
113 return;
114 case 3:
115 writel(crb_producer, NETXEN_CRB_NORMALIZE
116 (adapter, CRB_CMD_PRODUCER_OFFSET_3));
117 return;
118 default:
119 printk(KERN_WARNING "We tried to update "
120 "CRB_CMD_PRODUCER_OFFSET for invalid "
121 "PCI function id %d\n",
122 adapter->portnum);
123 return;
124 }
125 }
126
127 static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
128 u32 crb_consumer)
129 {
130 switch (adapter->portnum) {
131 case 0:
132 writel(crb_consumer, NETXEN_CRB_NORMALIZE
133 (adapter, CRB_CMD_CONSUMER_OFFSET));
134 return;
135 case 1:
136 writel(crb_consumer, NETXEN_CRB_NORMALIZE
137 (adapter, CRB_CMD_CONSUMER_OFFSET_1));
138 return;
139 case 2:
140 writel(crb_consumer, NETXEN_CRB_NORMALIZE
141 (adapter, CRB_CMD_CONSUMER_OFFSET_2));
142 return;
143 case 3:
144 writel(crb_consumer, NETXEN_CRB_NORMALIZE
145 (adapter, CRB_CMD_CONSUMER_OFFSET_3));
146 return;
147 default:
148 printk(KERN_WARNING "We tried to update "
149 "CRB_CMD_PRODUCER_OFFSET for invalid "
150 "PCI function id %d\n",
151 adapter->portnum);
152 return;
153 }
154 }
155
156 #define ADAPTER_LIST_SIZE 12
157 int netxen_cards_found;
158
159 /*
160 * netxen_nic_probe()
161 *
162 * The Linux system will invoke this after identifying the vendor ID and
163 * device Id in the pci_tbl supported by this module.
164 *
165 * A quad port card has one operational PCI config space, (function 0),
166 * which is used to access all four ports.
167 *
168 * This routine will initialize the adapter, and setup the global parameters
169 * along with the port's specific structure.
170 */
171 static int __devinit
172 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
173 {
174 struct net_device *netdev = NULL;
175 struct netxen_adapter *adapter = NULL;
176 void __iomem *mem_ptr0 = NULL;
177 void __iomem *mem_ptr1 = NULL;
178 void __iomem *mem_ptr2 = NULL;
179 unsigned long first_page_group_end;
180 unsigned long first_page_group_start;
181
182
183 u8 __iomem *db_ptr = NULL;
184 unsigned long mem_base, mem_len, db_base, db_len;
185 int pci_using_dac, i = 0, err;
186 int ring;
187 struct netxen_recv_context *recv_ctx = NULL;
188 struct netxen_rcv_desc_ctx *rcv_desc = NULL;
189 struct netxen_cmd_buffer *cmd_buf_arr = NULL;
190 u64 mac_addr[FLASH_NUM_PORTS + 1];
191 int valid_mac = 0;
192 u32 val;
193 int pci_func_id = PCI_FUNC(pdev->devfn);
194
195 printk(KERN_INFO "%s \n", netxen_nic_driver_string);
196
197 if (pdev->class != 0x020000) {
198 printk(KERN_ERR"NetXen function %d, class %x will not"
199 "be enabled.\n",pci_func_id, pdev->class);
200 return -ENODEV;
201 }
202 if ((err = pci_enable_device(pdev)))
203 return err;
204 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
205 err = -ENODEV;
206 goto err_out_disable_pdev;
207 }
208
209 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
210 goto err_out_disable_pdev;
211
212 pci_set_master(pdev);
213 pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id);
214 if (nx_p2_id == NX_P2_C1 &&
215 (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
216 (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
217 pci_using_dac = 1;
218 } else {
219 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
220 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
221 goto err_out_free_res;
222
223 pci_using_dac = 0;
224 }
225
226
227 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
228 if(!netdev) {
229 printk(KERN_ERR"%s: Failed to allocate memory for the "
230 "device block.Check system memory resource"
231 " usage.\n", netxen_nic_driver_name);
232 goto err_out_free_res;
233 }
234
235 SET_MODULE_OWNER(netdev);
236 SET_NETDEV_DEV(netdev, &pdev->dev);
237
238 adapter = netdev->priv;
239 memset(adapter, 0 , sizeof(struct netxen_adapter));
240
241 adapter->ahw.pdev = pdev;
242 adapter->ahw.pci_func = pci_func_id;
243 spin_lock_init(&adapter->tx_lock);
244 spin_lock_init(&adapter->lock);
245
246 /* remap phys address */
247 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
248 mem_len = pci_resource_len(pdev, 0);
249
250 /* 128 Meg of memory */
251 if (mem_len == NETXEN_PCI_128MB_SIZE) {
252 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
253 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
254 SECOND_PAGE_GROUP_SIZE);
255 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
256 THIRD_PAGE_GROUP_SIZE);
257 first_page_group_start = FIRST_PAGE_GROUP_START;
258 first_page_group_end = FIRST_PAGE_GROUP_END;
259 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
260 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
261 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
262 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
263 first_page_group_start = 0;
264 first_page_group_end = 0;
265 } else {
266 err = -EIO;
267 goto err_out_free_netdev;
268 }
269
270 if (((mem_ptr0 == 0UL) && (mem_len == NETXEN_PCI_128MB_SIZE)) ||
271 (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) {
272 DPRINTK(ERR,
273 "Cannot remap adapter memory aborting.:"
274 "0 -> %p, 1 -> %p, 2 -> %p\n",
275 mem_ptr0, mem_ptr1, mem_ptr2);
276
277 err = -EIO;
278 goto err_out_iounmap;
279 }
280 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
281 db_len = pci_resource_len(pdev, 4);
282
283 if (db_len == 0) {
284 printk(KERN_ERR "%s: doorbell is disabled\n",
285 netxen_nic_driver_name);
286 err = -EIO;
287 goto err_out_iounmap;
288 }
289 DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
290 db_len);
291
292 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
293 if (!db_ptr) {
294 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
295 netxen_nic_driver_name);
296 err = -EIO;
297 goto err_out_iounmap;
298 }
299 DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
300
301 adapter->ahw.pci_base0 = mem_ptr0;
302 adapter->ahw.first_page_group_start = first_page_group_start;
303 adapter->ahw.first_page_group_end = first_page_group_end;
304 adapter->ahw.pci_base1 = mem_ptr1;
305 adapter->ahw.pci_base2 = mem_ptr2;
306 adapter->ahw.db_base = db_ptr;
307 adapter->ahw.db_len = db_len;
308
309 adapter->netdev = netdev;
310 adapter->pdev = pdev;
311 adapter->portnum = pci_func_id;
312
313 netdev->open = netxen_nic_open;
314 netdev->stop = netxen_nic_close;
315 netdev->hard_start_xmit = netxen_nic_xmit_frame;
316 netdev->get_stats = netxen_nic_get_stats;
317 netdev->set_multicast_list = netxen_nic_set_multi;
318 netdev->set_mac_address = netxen_nic_set_mac;
319 netdev->change_mtu = netxen_nic_change_mtu;
320 netdev->tx_timeout = netxen_tx_timeout;
321 netdev->watchdog_timeo = HZ;
322
323 netxen_nic_change_mtu(netdev, netdev->mtu);
324
325 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
326 netdev->poll = netxen_nic_poll;
327 netdev->weight = NETXEN_NETDEV_WEIGHT;
328 #ifdef CONFIG_NET_POLL_CONTROLLER
329 netdev->poll_controller = netxen_nic_poll_controller;
330 #endif
331 /* ScatterGather support */
332 netdev->features = NETIF_F_SG;
333 netdev->features |= NETIF_F_IP_CSUM;
334 netdev->features |= NETIF_F_TSO;
335
336 if (pci_using_dac)
337 netdev->features |= NETIF_F_HIGHDMA;
338
339 if (pci_enable_msi(pdev)) {
340 adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
341 printk(KERN_WARNING "%s: unable to allocate MSI interrupt"
342 " error\n", netxen_nic_driver_name);
343 } else
344 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
345
346 netdev->irq = pdev->irq;
347 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
348
349 /*
350 * Set the CRB window to invalid. If any register in window 0 is
351 * accessed it should set the window to 0 and then reset it to 1.
352 */
353 adapter->curr_window = 255;
354
355 /* initialize the adapter */
356 netxen_initialize_adapter_hw(adapter);
357
358 #ifdef CONFIG_PPC
359 if ((adapter->ahw.boardcfg.board_type ==
360 NETXEN_BRDTYPE_P2_SB31_10G_IMEZ) &&
361 (pci_func_id == 2))
362 goto err_out_free_adapter;
363 #endif /* CONFIG_PPC */
364
365 /*
366 * Adapter in our case is quad port so initialize it before
367 * initializing the ports
368 */
369
370 netxen_initialize_adapter_ops(adapter);
371
372 adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
373 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) ||
374 (adapter->ahw.boardcfg.board_type ==
375 NETXEN_BRDTYPE_P2_SB31_2G))
376 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
377 else
378 adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
379 adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
380 adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
381
382 cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
383 if (cmd_buf_arr == NULL) {
384 printk(KERN_ERR
385 "%s: Could not allocate cmd_buf_arr memory:%d\n",
386 netxen_nic_driver_name, (int)TX_RINGSIZE);
387 err = -ENOMEM;
388 goto err_out_free_adapter;
389 }
390 memset(cmd_buf_arr, 0, TX_RINGSIZE);
391 adapter->cmd_buf_arr = cmd_buf_arr;
392
393 for (i = 0; i < MAX_RCV_CTX; ++i) {
394 recv_ctx = &adapter->recv_ctx[i];
395 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
396 rcv_desc = &recv_ctx->rcv_desc[ring];
397 switch (RCV_DESC_TYPE(ring)) {
398 case RCV_DESC_NORMAL:
399 rcv_desc->max_rx_desc_count =
400 adapter->max_rx_desc_count;
401 rcv_desc->flags = RCV_DESC_NORMAL;
402 rcv_desc->dma_size = RX_DMA_MAP_LEN;
403 rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH;
404 break;
405
406 case RCV_DESC_JUMBO:
407 rcv_desc->max_rx_desc_count =
408 adapter->max_jumbo_rx_desc_count;
409 rcv_desc->flags = RCV_DESC_JUMBO;
410 rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN;
411 rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH;
412 break;
413
414 case RCV_RING_LRO:
415 rcv_desc->max_rx_desc_count =
416 adapter->max_lro_rx_desc_count;
417 rcv_desc->flags = RCV_DESC_LRO;
418 rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN;
419 rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
420 break;
421
422 }
423 rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *)
424 vmalloc(RCV_BUFFSIZE);
425
426 if (rcv_desc->rx_buf_arr == NULL) {
427 printk(KERN_ERR "%s: Could not allocate"
428 "rcv_desc->rx_buf_arr memory:%d\n",
429 netxen_nic_driver_name,
430 (int)RCV_BUFFSIZE);
431 err = -ENOMEM;
432 goto err_out_free_rx_buffer;
433 }
434 memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE);
435 }
436
437 }
438
439 netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */
440
441 /* Mezz cards have PCI function 0,2,3 enabled */
442 if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
443 && (pci_func_id >= 2))
444 adapter->portnum = pci_func_id - 2;
445
446 #ifdef CONFIG_IA64
447 if(adapter->portnum == 0) {
448 netxen_pinit_from_rom(adapter, 0);
449 udelay(500);
450 netxen_load_firmware(adapter);
451 }
452 #endif
453
454 init_timer(&adapter->watchdog_timer);
455 adapter->ahw.xg_linkup = 0;
456 adapter->watchdog_timer.function = &netxen_watchdog;
457 adapter->watchdog_timer.data = (unsigned long)adapter;
458 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
459 adapter->ahw.pdev = pdev;
460 adapter->proc_cmd_buf_counter = 0;
461 adapter->ahw.revision_id = nx_p2_id;
462
463 /* make sure Window == 1 */
464 netxen_nic_pci_change_crbwindow(adapter, 1);
465
466 netxen_nic_update_cmd_producer(adapter, 0);
467 netxen_nic_update_cmd_consumer(adapter, 0);
468 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
469
470 if (netxen_is_flash_supported(adapter) == 0 &&
471 netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
472 valid_mac = 1;
473 else
474 valid_mac = 0;
475
476 if (valid_mac) {
477 unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum];
478 netdev->dev_addr[0] = *(p + 5);
479 netdev->dev_addr[1] = *(p + 4);
480 netdev->dev_addr[2] = *(p + 3);
481 netdev->dev_addr[3] = *(p + 2);
482 netdev->dev_addr[4] = *(p + 1);
483 netdev->dev_addr[5] = *(p + 0);
484
485 memcpy(netdev->perm_addr, netdev->dev_addr,
486 netdev->addr_len);
487 if (!is_valid_ether_addr(netdev->perm_addr)) {
488 printk(KERN_ERR "%s: Bad MAC address "
489 "%02x:%02x:%02x:%02x:%02x:%02x.\n",
490 netxen_nic_driver_name,
491 netdev->dev_addr[0],
492 netdev->dev_addr[1],
493 netdev->dev_addr[2],
494 netdev->dev_addr[3],
495 netdev->dev_addr[4],
496 netdev->dev_addr[5]);
497 } else {
498 if (adapter->macaddr_set)
499 adapter->macaddr_set(adapter,
500 netdev->dev_addr);
501 }
502 }
503
504 if (adapter->portnum == 0) {
505 err = netxen_initialize_adapter_offload(adapter);
506 if (err)
507 goto err_out_free_rx_buffer;
508 val = readl(NETXEN_CRB_NORMALIZE(adapter,
509 NETXEN_CAM_RAM(0x1fc)));
510 if (val == 0x55555555) {
511 /* This is the first boot after power up */
512 val = readl(NETXEN_CRB_NORMALIZE(adapter,
513 NETXEN_ROMUSB_GLB_SW_RESET));
514 printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val);
515 if (val != 0x80000f) {
516 /* clear the register for future unloads/loads */
517 writel(0, NETXEN_CRB_NORMALIZE(adapter,
518 NETXEN_CAM_RAM(0x1fc)));
519 printk(KERN_ERR "ERROR in NetXen HW init sequence.\n");
520 err = -ENODEV;
521 goto err_out_free_dev;
522 }
523
524 /* clear the register for future unloads/loads */
525 writel(0, NETXEN_CRB_NORMALIZE(adapter,
526 NETXEN_CAM_RAM(0x1fc)));
527 }
528 printk(KERN_INFO "State: 0x%0x\n",
529 readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
530
531 /*
532 * Tell the hardware our version number.
533 */
534 i = (_NETXEN_NIC_LINUX_MAJOR << 16)
535 | ((_NETXEN_NIC_LINUX_MINOR << 8))
536 | (_NETXEN_NIC_LINUX_SUBVERSION);
537 writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION));
538
539 /* Unlock the HW, prompting the boot sequence */
540 writel(1,
541 NETXEN_CRB_NORMALIZE(adapter,
542 NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
543 /* Handshake with the card before we register the devices. */
544 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
545 }
546
547 /*
548 * See if the firmware gave us a virtual-physical port mapping.
549 */
550 i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum)));
551 if (i != 0x55555555)
552 physical_port[adapter->portnum] = i;
553
554 netif_carrier_off(netdev);
555 netif_stop_queue(netdev);
556
557 if ((err = register_netdev(netdev))) {
558 printk(KERN_ERR "%s: register_netdev failed port #%d"
559 " aborting\n", netxen_nic_driver_name,
560 adapter->portnum);
561 err = -EIO;
562 goto err_out_free_dev;
563 }
564
565 pci_set_drvdata(pdev, adapter);
566
567 switch (adapter->ahw.board_type) {
568 case NETXEN_NIC_GBE:
569 printk(KERN_INFO "%s: QUAD GbE board initialized\n",
570 netxen_nic_driver_name);
571 break;
572
573 case NETXEN_NIC_XGBE:
574 printk(KERN_INFO "%s: XGbE board initialized\n",
575 netxen_nic_driver_name);
576 break;
577 }
578
579 adapter->driver_mismatch = 0;
580
581 return 0;
582
583 err_out_free_dev:
584 if (adapter->portnum == 0)
585 netxen_free_adapter_offload(adapter);
586
587 err_out_free_rx_buffer:
588 for (i = 0; i < MAX_RCV_CTX; ++i) {
589 recv_ctx = &adapter->recv_ctx[i];
590 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
591 rcv_desc = &recv_ctx->rcv_desc[ring];
592 if (rcv_desc->rx_buf_arr != NULL) {
593 vfree(rcv_desc->rx_buf_arr);
594 rcv_desc->rx_buf_arr = NULL;
595 }
596 }
597 }
598 vfree(cmd_buf_arr);
599
600 err_out_free_adapter:
601 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
602 pci_disable_msi(pdev);
603
604 pci_set_drvdata(pdev, NULL);
605
606 if (db_ptr)
607 iounmap(db_ptr);
608
609 err_out_iounmap:
610 if (mem_ptr0)
611 iounmap(mem_ptr0);
612 if (mem_ptr1)
613 iounmap(mem_ptr1);
614 if (mem_ptr2)
615 iounmap(mem_ptr2);
616
617 err_out_free_netdev:
618 free_netdev(netdev);
619
620 err_out_free_res:
621 pci_release_regions(pdev);
622
623 err_out_disable_pdev:
624 pci_disable_device(pdev);
625 return err;
626 }
627
628 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
629 {
630 struct netxen_adapter *adapter;
631 struct net_device *netdev;
632 struct netxen_rx_buffer *buffer;
633 struct netxen_recv_context *recv_ctx;
634 struct netxen_rcv_desc_ctx *rcv_desc;
635 int i;
636 int ctxid, ring;
637
638 adapter = pci_get_drvdata(pdev);
639 if (adapter == NULL)
640 return;
641
642 netdev = adapter->netdev;
643
644 netxen_nic_disable_int(adapter);
645 if (adapter->irq)
646 free_irq(adapter->irq, adapter);
647
648 if (adapter->stop_port)
649 adapter->stop_port(adapter);
650
651 if ((adapter->flags & NETXEN_NIC_MSI_ENABLED))
652 pci_disable_msi(pdev);
653
654 if (adapter->portnum == 0)
655 netxen_free_adapter_offload(adapter);
656
657 if (adapter->irq)
658 free_irq(adapter->irq, adapter);
659 if(adapter->portnum == 0) {
660 /* leave the hw in the same state as reboot */
661 writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
662 netxen_pinit_from_rom(adapter, 0);
663 udelay(500);
664 netxen_load_firmware(adapter);
665 netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
666 }
667
668 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
669 netxen_free_hw_resources(adapter);
670
671 for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
672 recv_ctx = &adapter->recv_ctx[ctxid];
673 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
674 rcv_desc = &recv_ctx->rcv_desc[ring];
675 for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) {
676 buffer = &(rcv_desc->rx_buf_arr[i]);
677 if (buffer->state == NETXEN_BUFFER_FREE)
678 continue;
679 pci_unmap_single(pdev, buffer->dma,
680 rcv_desc->dma_size,
681 PCI_DMA_FROMDEVICE);
682 if (buffer->skb != NULL)
683 dev_kfree_skb_any(buffer->skb);
684 }
685 vfree(rcv_desc->rx_buf_arr);
686 }
687 }
688
689 unregister_netdev(netdev);
690
691 vfree(adapter->cmd_buf_arr);
692
693 iounmap(adapter->ahw.db_base);
694 iounmap(adapter->ahw.pci_base0);
695 iounmap(adapter->ahw.pci_base1);
696 iounmap(adapter->ahw.pci_base2);
697
698 pci_release_regions(pdev);
699 pci_disable_device(pdev);
700 pci_set_drvdata(pdev, NULL);
701
702 free_netdev(netdev);
703 }
704
705 /*
706 * Called when a network interface is made active
707 * @returns 0 on success, negative value on failure
708 */
709 static int netxen_nic_open(struct net_device *netdev)
710 {
711 struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
712 int err = 0;
713 int ctx, ring;
714
715 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
716 err = netxen_init_firmware(adapter);
717 if (err != 0) {
718 printk(KERN_ERR "Failed to init firmware\n");
719 return -EIO;
720 }
721 netxen_nic_flash_print(adapter);
722
723 /* setup all the resources for the Phantom... */
724 /* this include the descriptors for rcv, tx, and status */
725 netxen_nic_clear_stats(adapter);
726 err = netxen_nic_hw_resources(adapter);
727 if (err) {
728 printk(KERN_ERR "Error in setting hw resources:%d\n",
729 err);
730 return err;
731 }
732 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
733 for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++)
734 netxen_post_rx_buffers(adapter, ctx, ring);
735 }
736 adapter->irq = adapter->ahw.pdev->irq;
737 err = request_irq(adapter->ahw.pdev->irq, netxen_intr,
738 IRQF_SHARED|IRQF_SAMPLE_RANDOM, netdev->name,
739 adapter);
740 if (err) {
741 printk(KERN_ERR "request_irq failed with: %d\n", err);
742 netxen_free_hw_resources(adapter);
743 return err;
744 }
745
746 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
747 }
748 if (!adapter->driver_mismatch)
749 mod_timer(&adapter->watchdog_timer, jiffies);
750
751 netxen_nic_enable_int(adapter);
752
753 /* Done here again so that even if phantom sw overwrote it,
754 * we set it */
755 if (adapter->macaddr_set)
756 adapter->macaddr_set(adapter, netdev->dev_addr);
757 if (adapter->init_port
758 && adapter->init_port(adapter, adapter->portnum) != 0) {
759 del_timer_sync(&adapter->watchdog_timer);
760 printk(KERN_ERR "%s: Failed to initialize port %d\n",
761 netxen_nic_driver_name, adapter->portnum);
762 return -EIO;
763 }
764
765 netxen_nic_set_link_parameters(adapter);
766
767 netxen_nic_set_multi(netdev);
768 if (adapter->set_mtu)
769 adapter->set_mtu(adapter, netdev->mtu);
770
771 if (!adapter->driver_mismatch)
772 netif_start_queue(netdev);
773
774 return 0;
775 }
776
777 /*
778 * netxen_nic_close - Disables a network interface entry point
779 */
780 static int netxen_nic_close(struct net_device *netdev)
781 {
782 struct netxen_adapter *adapter = netdev_priv(netdev);
783 int i, j;
784 struct netxen_cmd_buffer *cmd_buff;
785 struct netxen_skb_frag *buffrag;
786
787 netif_carrier_off(netdev);
788 netif_stop_queue(netdev);
789
790 cmd_buff = adapter->cmd_buf_arr;
791 for (i = 0; i < adapter->max_tx_desc_count; i++) {
792 buffrag = cmd_buff->frag_array;
793 if (buffrag->dma) {
794 pci_unmap_single(adapter->pdev, buffrag->dma,
795 buffrag->length, PCI_DMA_TODEVICE);
796 buffrag->dma = (u64) NULL;
797 }
798 for (j = 0; j < cmd_buff->frag_count; j++) {
799 buffrag++;
800 if (buffrag->dma) {
801 pci_unmap_page(adapter->pdev, buffrag->dma,
802 buffrag->length,
803 PCI_DMA_TODEVICE);
804 buffrag->dma = (u64) NULL;
805 }
806 }
807 /* Free the skb we received in netxen_nic_xmit_frame */
808 if (cmd_buff->skb) {
809 dev_kfree_skb_any(cmd_buff->skb);
810 cmd_buff->skb = NULL;
811 }
812 cmd_buff++;
813 }
814 FLUSH_SCHEDULED_WORK();
815 del_timer_sync(&adapter->watchdog_timer);
816
817 return 0;
818 }
819
820 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
821 {
822 struct netxen_adapter *adapter = netdev_priv(netdev);
823 struct netxen_hardware_context *hw = &adapter->ahw;
824 unsigned int first_seg_len = skb->len - skb->data_len;
825 struct netxen_skb_frag *buffrag;
826 unsigned int i;
827
828 u32 producer = 0;
829 u32 saved_producer = 0;
830 struct cmd_desc_type0 *hwdesc;
831 int k;
832 struct netxen_cmd_buffer *pbuf = NULL;
833 static int dropped_packet = 0;
834 int frag_count;
835 u32 local_producer = 0;
836 u32 max_tx_desc_count = 0;
837 u32 last_cmd_consumer = 0;
838 int no_of_desc;
839
840 adapter->stats.xmitcalled++;
841 frag_count = skb_shinfo(skb)->nr_frags + 1;
842
843 if (unlikely(skb->len <= 0)) {
844 dev_kfree_skb_any(skb);
845 adapter->stats.badskblen++;
846 return NETDEV_TX_OK;
847 }
848
849 if (frag_count > MAX_BUFFERS_PER_CMD) {
850 printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
851 "too large, can handle only %d frags\n",
852 netxen_nic_driver_name, netdev->name,
853 frag_count, MAX_BUFFERS_PER_CMD);
854 adapter->stats.txdropped++;
855 if ((++dropped_packet & 0xff) == 0xff)
856 printk("%s: %s droppped packets = %d\n",
857 netxen_nic_driver_name, netdev->name,
858 dropped_packet);
859
860 return NETDEV_TX_OK;
861 }
862
863 /*
864 * Everything is set up. Now, we just need to transmit it out.
865 * Note that we have to copy the contents of buffer over to
866 * right place. Later on, this can be optimized out by de-coupling the
867 * producer index from the buffer index.
868 */
869 retry_getting_window:
870 spin_lock_bh(&adapter->tx_lock);
871 if (adapter->total_threads >= MAX_XMIT_PRODUCERS) {
872 spin_unlock_bh(&adapter->tx_lock);
873 /*
874 * Yield CPU
875 */
876 if (!in_atomic())
877 schedule();
878 else {
879 for (i = 0; i < 20; i++)
880 cpu_relax(); /*This a nop instr on i386 */
881 }
882 goto retry_getting_window;
883 }
884 local_producer = adapter->cmd_producer;
885 /* There 4 fragments per descriptor */
886 no_of_desc = (frag_count + 3) >> 2;
887 if (netdev->features & NETIF_F_TSO) {
888 if (skb_shinfo(skb)->gso_size > 0) {
889
890 no_of_desc++;
891 if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
892 sizeof(struct ethhdr)) >
893 (sizeof(struct cmd_desc_type0) - 2)) {
894 no_of_desc++;
895 }
896 }
897 }
898 k = adapter->cmd_producer;
899 max_tx_desc_count = adapter->max_tx_desc_count;
900 last_cmd_consumer = adapter->last_cmd_consumer;
901 if ((k + no_of_desc) >=
902 ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count :
903 last_cmd_consumer)) {
904 netif_stop_queue(netdev);
905 adapter->flags |= NETXEN_NETDEV_STATUS;
906 spin_unlock_bh(&adapter->tx_lock);
907 return NETDEV_TX_BUSY;
908 }
909 k = get_index_range(k, max_tx_desc_count, no_of_desc);
910 adapter->cmd_producer = k;
911 adapter->total_threads++;
912 adapter->num_threads++;
913
914 spin_unlock_bh(&adapter->tx_lock);
915 /* Copy the descriptors into the hardware */
916 producer = local_producer;
917 saved_producer = producer;
918 hwdesc = &hw->cmd_desc_head[producer];
919 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
920 /* Take skb->data itself */
921 pbuf = &adapter->cmd_buf_arr[producer];
922 if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
923 pbuf->mss = skb_shinfo(skb)->gso_size;
924 hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
925 } else {
926 pbuf->mss = 0;
927 hwdesc->mss = 0;
928 }
929 pbuf->total_length = skb->len;
930 pbuf->skb = skb;
931 pbuf->cmd = TX_ETHER_PKT;
932 pbuf->frag_count = frag_count;
933 pbuf->port = adapter->portnum;
934 buffrag = &pbuf->frag_array[0];
935 buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
936 PCI_DMA_TODEVICE);
937 buffrag->length = first_seg_len;
938 netxen_set_cmd_desc_totallength(hwdesc, skb->len);
939 netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
940 netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
941
942 netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
943 netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
944 hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
945 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
946
947 for (i = 1, k = 1; i < frag_count; i++, k++) {
948 struct skb_frag_struct *frag;
949 int len, temp_len;
950 unsigned long offset;
951 dma_addr_t temp_dma;
952
953 /* move to next desc. if there is a need */
954 if ((i & 0x3) == 0) {
955 k = 0;
956 producer = get_next_index(producer,
957 adapter->max_tx_desc_count);
958 hwdesc = &hw->cmd_desc_head[producer];
959 memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
960 }
961 frag = &skb_shinfo(skb)->frags[i - 1];
962 len = frag->size;
963 offset = frag->page_offset;
964
965 temp_len = len;
966 temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
967 len, PCI_DMA_TODEVICE);
968
969 buffrag++;
970 buffrag->dma = temp_dma;
971 buffrag->length = temp_len;
972
973 DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k);
974 switch (k) {
975 case 0:
976 hwdesc->buffer1_length = cpu_to_le16(temp_len);
977 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
978 break;
979 case 1:
980 hwdesc->buffer2_length = cpu_to_le16(temp_len);
981 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
982 break;
983 case 2:
984 hwdesc->buffer3_length = cpu_to_le16(temp_len);
985 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
986 break;
987 case 3:
988 hwdesc->buffer4_length = cpu_to_le16(temp_len);
989 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
990 break;
991 }
992 frag++;
993 }
994 producer = get_next_index(producer, adapter->max_tx_desc_count);
995
996 /* might change opcode to TX_TCP_LSO */
997 netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
998
999 /* For LSO, we need to copy the MAC/IP/TCP headers into
1000 * the descriptor ring
1001 */
1002 if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
1003 == TX_TCP_LSO) {
1004 int hdr_len, first_hdr_len, more_hdr;
1005 hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
1006 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1007 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1008 more_hdr = 1;
1009 } else {
1010 first_hdr_len = hdr_len;
1011 more_hdr = 0;
1012 }
1013 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1014 hwdesc = &hw->cmd_desc_head[producer];
1015
1016 /* copy the first 64 bytes */
1017 memcpy(((void *)hwdesc) + 2,
1018 (void *)(skb->data), first_hdr_len);
1019 producer = get_next_index(producer, max_tx_desc_count);
1020
1021 if (more_hdr) {
1022 hwdesc = &hw->cmd_desc_head[producer];
1023 /* copy the next 64 bytes - should be enough except
1024 * for pathological case
1025 */
1026 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1027 hwdesc,
1028 (hdr_len -
1029 first_hdr_len));
1030 producer = get_next_index(producer, max_tx_desc_count);
1031 }
1032 }
1033
1034 i = netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]);
1035
1036 hw->cmd_desc_head[saved_producer].flags_opcode =
1037 cpu_to_le16(hw->cmd_desc_head[saved_producer].flags_opcode);
1038 hw->cmd_desc_head[saved_producer].num_of_buffers_total_length =
1039 cpu_to_le32(hw->cmd_desc_head[saved_producer].
1040 num_of_buffers_total_length);
1041
1042 spin_lock_bh(&adapter->tx_lock);
1043 adapter->stats.txbytes += i;
1044
1045 /* Code to update the adapter considering how many producer threads
1046 are currently working */
1047 if ((--adapter->num_threads) == 0) {
1048 /* This is the last thread */
1049 u32 crb_producer = adapter->cmd_producer;
1050 netxen_nic_update_cmd_producer(adapter, crb_producer);
1051 wmb();
1052 adapter->total_threads = 0;
1053 }
1054
1055 adapter->stats.xmitfinished++;
1056 spin_unlock_bh(&adapter->tx_lock);
1057
1058 netdev->trans_start = jiffies;
1059
1060 DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer);
1061
1062 DPRINTK(INFO, "Done. Send\n");
1063 return NETDEV_TX_OK;
1064 }
1065
1066 static void netxen_watchdog(unsigned long v)
1067 {
1068 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1069
1070 SCHEDULE_WORK(&adapter->watchdog_task);
1071 }
1072
1073 static void netxen_tx_timeout(struct net_device *netdev)
1074 {
1075 struct netxen_adapter *adapter = (struct netxen_adapter *)
1076 netdev_priv(netdev);
1077 SCHEDULE_WORK(&adapter->tx_timeout_task);
1078 }
1079
1080 static void netxen_tx_timeout_task(struct work_struct *work)
1081 {
1082 struct netxen_adapter *adapter =
1083 container_of(work, struct netxen_adapter, tx_timeout_task);
1084 unsigned long flags;
1085
1086 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1087 netxen_nic_driver_name, adapter->netdev->name);
1088
1089 spin_lock_irqsave(&adapter->lock, flags);
1090 netxen_nic_close(adapter->netdev);
1091 netxen_nic_open(adapter->netdev);
1092 spin_unlock_irqrestore(&adapter->lock, flags);
1093 adapter->netdev->trans_start = jiffies;
1094 netif_wake_queue(adapter->netdev);
1095 }
1096
1097 static int
1098 netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
1099 {
1100 u32 ret = 0;
1101
1102 DPRINTK(INFO, "Entered handle ISR\n");
1103 adapter->stats.ints++;
1104
1105 if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
1106 int count = 0;
1107 u32 mask;
1108 u32 our_int = 0;
1109 our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
1110 /* not our interrupt */
1111 if ((our_int & (0x80 << adapter->portnum)) == 0)
1112 return ret;
1113 netxen_nic_disable_int(adapter);
1114 /* Window = 0 or 1 */
1115 do {
1116 writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter,
1117 ISR_INT_TARGET_STATUS));
1118 mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
1119 } while (((mask & 0x80) != 0) && (++count < 32));
1120 if ((mask & 0x80) != 0)
1121 printk("Could not disable interrupt completely\n");
1122
1123 }
1124
1125 if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) {
1126 if (netif_rx_schedule_prep(netdev)) {
1127 /*
1128 * Interrupts are already disabled.
1129 */
1130 __netif_rx_schedule(netdev);
1131 } else {
1132 static unsigned int intcount = 0;
1133 if ((++intcount & 0xfff) == 0xfff)
1134 printk(KERN_ERR
1135 "%s: %s interrupt %d while in poll\n",
1136 netxen_nic_driver_name, netdev->name,
1137 intcount);
1138 }
1139 ret = 1;
1140 }
1141
1142 if (ret == 0) {
1143 netxen_nic_enable_int(adapter);
1144 }
1145
1146 return ret;
1147 }
1148
1149 /*
1150 * netxen_intr - Interrupt Handler
1151 * @irq: interrupt number
1152 * data points to adapter stucture (which may be handling more than 1 port
1153 */
1154 irqreturn_t netxen_intr(int irq, void *data)
1155 {
1156 struct netxen_adapter *adapter;
1157 struct net_device *netdev;
1158
1159 if (unlikely(!irq)) {
1160 return IRQ_NONE; /* Not our interrupt */
1161 }
1162
1163 adapter = (struct netxen_adapter *)data;
1164 netdev = adapter->netdev;
1165 /* process our status queue (for all 4 ports) */
1166 if (netif_running(netdev))
1167 netxen_handle_int(adapter, netdev);
1168
1169 return IRQ_HANDLED;
1170 }
1171
1172 static int netxen_nic_poll(struct net_device *netdev, int *budget)
1173 {
1174 struct netxen_adapter *adapter = netdev_priv(netdev);
1175 int work_to_do = min(*budget, netdev->quota);
1176 int done = 1;
1177 int ctx;
1178 int this_work_done;
1179 int work_done = 0;
1180
1181 DPRINTK(INFO, "polling for %d descriptors\n", *budget);
1182
1183 work_done = 0;
1184 for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
1185 /*
1186 * Fairness issue. This will give undue weight to the
1187 * receive context 0.
1188 */
1189
1190 /*
1191 * To avoid starvation, we give each of our receivers,
1192 * a fraction of the quota. Sometimes, it might happen that we
1193 * have enough quota to process every packet, but since all the
1194 * packets are on one context, it gets only half of the quota,
1195 * and ends up not processing it.
1196 */
1197 this_work_done = netxen_process_rcv_ring(adapter, ctx,
1198 work_to_do /
1199 MAX_RCV_CTX);
1200 work_done += this_work_done;
1201 }
1202
1203 netdev->quota -= work_done;
1204 *budget -= work_done;
1205
1206 if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0)
1207 done = 0;
1208
1209 if (netxen_process_cmd_ring((unsigned long)adapter) == 0)
1210 done = 0;
1211
1212 DPRINTK(INFO, "new work_done: %d work_to_do: %d\n",
1213 work_done, work_to_do);
1214 if (done) {
1215 netif_rx_complete(netdev);
1216 netxen_nic_enable_int(adapter);
1217 }
1218
1219 return !done;
1220 }
1221
1222 #ifdef CONFIG_NET_POLL_CONTROLLER
1223 static void netxen_nic_poll_controller(struct net_device *netdev)
1224 {
1225 struct netxen_adapter *adapter = netdev_priv(netdev);
1226 disable_irq(adapter->irq);
1227 netxen_intr(adapter->irq, adapter);
1228 enable_irq(adapter->irq);
1229 }
1230 #endif
1231
1232 static struct pci_driver netxen_driver = {
1233 .name = netxen_nic_driver_name,
1234 .id_table = netxen_pci_tbl,
1235 .probe = netxen_nic_probe,
1236 .remove = __devexit_p(netxen_nic_remove)
1237 };
1238
1239 /* Driver Registration on NetXen card */
1240
1241 static int __init netxen_init_module(void)
1242 {
1243 if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0)
1244 return -ENOMEM;
1245
1246 return pci_register_driver(&netxen_driver);
1247 }
1248
1249 module_init(netxen_init_module);
1250
1251 static void __exit netxen_exit_module(void)
1252 {
1253 /*
1254 * Wait for some time to allow the dma to drain, if any.
1255 */
1256 pci_unregister_driver(&netxen_driver);
1257 destroy_workqueue(netxen_workq);
1258 }
1259
1260 module_exit(netxen_exit_module);
WRT350N Kernel Patches