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Commit | Line | Data |
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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 JG |
41 | #include <linux/dma-mapping.h> |
42 | #include <linux/vmalloc.h> | |
c9bdd4b5 | 43 | #include <net/ip.h> |
1494a814 | 44 | |
3d396eb1 AK |
45 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
46 | MODULE_LICENSE("GPL"); | |
47 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
48 | ||
ed25ffa1 | 49 | char netxen_nic_driver_name[] = "netxen-nic"; |
3d396eb1 | 50 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
cb8011ad | 51 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 AK |
52 | |
53 | #define NETXEN_NETDEV_WEIGHT 120 | |
54 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 55 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 | 56 | |
ed25ffa1 AK |
57 | #define DMA_32BIT_MASK 0x00000000ffffffffULL |
58 | #define DMA_35BIT_MASK 0x00000007ffffffffULL | |
59 | ||
3d396eb1 AK |
60 | /* Local functions to NetXen NIC driver */ |
61 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
62 | const struct pci_device_id *ent); | |
63 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); | |
64 | static int netxen_nic_open(struct net_device *netdev); | |
65 | static int netxen_nic_close(struct net_device *netdev); | |
66 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
67 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 68 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 AK |
69 | static void netxen_watchdog(unsigned long); |
70 | static int netxen_handle_int(struct netxen_adapter *, struct net_device *); | |
3d396eb1 AK |
71 | static int netxen_nic_poll(struct net_device *dev, int *budget); |
72 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
73 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
74 | #endif | |
1494a814 | 75 | static irqreturn_t netxen_intr(int irq, void *data); |
3d396eb1 | 76 | |
6c80b18d MT |
77 | int physical_port[] = {0, 1, 2, 3}; |
78 | ||
3d396eb1 AK |
79 | /* PCI Device ID Table */ |
80 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
81 | {PCI_DEVICE(0x4040, 0x0001)}, | |
82 | {PCI_DEVICE(0x4040, 0x0002)}, | |
83 | {PCI_DEVICE(0x4040, 0x0003)}, | |
84 | {PCI_DEVICE(0x4040, 0x0004)}, | |
85 | {PCI_DEVICE(0x4040, 0x0005)}, | |
0d390734 AK |
86 | {PCI_DEVICE(0x4040, 0x0024)}, |
87 | {PCI_DEVICE(0x4040, 0x0025)}, | |
3d396eb1 AK |
88 | {0,} |
89 | }; | |
90 | ||
91 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
92 | ||
ed25ffa1 AK |
93 | struct workqueue_struct *netxen_workq; |
94 | static void netxen_watchdog(unsigned long); | |
95 | ||
3176ff3e MT |
96 | static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, |
97 | uint32_t crb_producer) | |
98 | { | |
99 | switch (adapter->portnum) { | |
100 | case 0: | |
101 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
102 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
103 | return; | |
104 | case 1: | |
105 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
106 | (adapter, CRB_CMD_PRODUCER_OFFSET_1)); | |
107 | return; | |
108 | case 2: | |
109 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
110 | (adapter, CRB_CMD_PRODUCER_OFFSET_2)); | |
111 | return; | |
112 | case 3: | |
113 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
114 | (adapter, CRB_CMD_PRODUCER_OFFSET_3)); | |
115 | return; | |
116 | default: | |
117 | printk(KERN_WARNING "We tried to update " | |
118 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
119 | "PCI function id %d\n", | |
120 | adapter->portnum); | |
121 | return; | |
122 | } | |
123 | } | |
124 | ||
125 | static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, | |
126 | u32 crb_consumer) | |
127 | { | |
128 | switch (adapter->portnum) { | |
129 | case 0: | |
130 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
131 | (adapter, CRB_CMD_CONSUMER_OFFSET)); | |
132 | return; | |
133 | case 1: | |
134 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
135 | (adapter, CRB_CMD_CONSUMER_OFFSET_1)); | |
136 | return; | |
137 | case 2: | |
138 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
139 | (adapter, CRB_CMD_CONSUMER_OFFSET_2)); | |
140 | return; | |
141 | case 3: | |
142 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
143 | (adapter, CRB_CMD_CONSUMER_OFFSET_3)); | |
144 | return; | |
145 | default: | |
146 | printk(KERN_WARNING "We tried to update " | |
147 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
148 | "PCI function id %d\n", | |
149 | adapter->portnum); | |
150 | return; | |
151 | } | |
152 | } | |
153 | ||
154 | #define ADAPTER_LIST_SIZE 12 | |
155 | int netxen_cards_found; | |
156 | ||
4638aef1 SH |
157 | static void netxen_nic_disable_int(struct netxen_adapter *adapter) |
158 | { | |
159 | uint32_t mask = 0x7ff; | |
160 | int retries = 32; | |
161 | ||
162 | DPRINTK(1, INFO, "Entered ISR Disable \n"); | |
163 | ||
164 | switch (adapter->portnum) { | |
165 | case 0: | |
166 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0)); | |
167 | break; | |
168 | case 1: | |
169 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1)); | |
170 | break; | |
171 | case 2: | |
172 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2)); | |
173 | break; | |
174 | case 3: | |
175 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3)); | |
176 | break; | |
177 | } | |
178 | ||
179 | if (adapter->intr_scheme != -1 && | |
180 | adapter->intr_scheme != INTR_SCHEME_PERPORT) | |
181 | writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
182 | ||
183 | /* Window = 0 or 1 */ | |
184 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
185 | do { | |
186 | writel(0xffffffff, | |
187 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS)); | |
188 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
189 | if (!(mask & 0x80)) | |
190 | break; | |
191 | udelay(10); | |
192 | } while (--retries); | |
193 | ||
194 | if (!retries) { | |
195 | printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n", | |
196 | netxen_nic_driver_name); | |
197 | } | |
198 | } | |
199 | ||
200 | DPRINTK(1, INFO, "Done with Disable Int\n"); | |
201 | } | |
202 | ||
203 | static void netxen_nic_enable_int(struct netxen_adapter *adapter) | |
204 | { | |
205 | u32 mask; | |
206 | ||
207 | DPRINTK(1, INFO, "Entered ISR Enable \n"); | |
208 | ||
209 | if (adapter->intr_scheme != -1 && | |
210 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
211 | switch (adapter->ahw.board_type) { | |
212 | case NETXEN_NIC_GBE: | |
213 | mask = 0x77b; | |
214 | break; | |
215 | case NETXEN_NIC_XGBE: | |
216 | mask = 0x77f; | |
217 | break; | |
218 | default: | |
219 | mask = 0x7ff; | |
220 | break; | |
221 | } | |
222 | ||
223 | writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
224 | } | |
225 | ||
226 | switch (adapter->portnum) { | |
227 | case 0: | |
228 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0)); | |
229 | break; | |
230 | case 1: | |
231 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1)); | |
232 | break; | |
233 | case 2: | |
234 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2)); | |
235 | break; | |
236 | case 3: | |
237 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3)); | |
238 | break; | |
239 | } | |
240 | ||
241 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
242 | mask = 0xbff; | |
243 | if (adapter->intr_scheme != -1 && | |
244 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
245 | writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
246 | } | |
247 | writel(mask, | |
248 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK)); | |
249 | } | |
250 | ||
251 | DPRINTK(1, INFO, "Done with enable Int\n"); | |
252 | } | |
253 | ||
3d396eb1 AK |
254 | /* |
255 | * netxen_nic_probe() | |
256 | * | |
257 | * The Linux system will invoke this after identifying the vendor ID and | |
258 | * device Id in the pci_tbl supported by this module. | |
259 | * | |
260 | * A quad port card has one operational PCI config space, (function 0), | |
261 | * which is used to access all four ports. | |
262 | * | |
263 | * This routine will initialize the adapter, and setup the global parameters | |
264 | * along with the port's specific structure. | |
265 | */ | |
266 | static int __devinit | |
267 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
268 | { | |
269 | struct net_device *netdev = NULL; | |
270 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
271 | void __iomem *mem_ptr0 = NULL; |
272 | void __iomem *mem_ptr1 = NULL; | |
273 | void __iomem *mem_ptr2 = NULL; | |
6c80b18d MT |
274 | unsigned long first_page_group_end; |
275 | unsigned long first_page_group_start; | |
276 | ||
cb8011ad | 277 | |
a608ab9c | 278 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 279 | unsigned long mem_base, mem_len, db_base, db_len; |
3176ff3e | 280 | int pci_using_dac, i = 0, err; |
3d396eb1 AK |
281 | int ring; |
282 | struct netxen_recv_context *recv_ctx = NULL; | |
283 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
284 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
285 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
6c80b18d MT |
286 | int valid_mac = 0; |
287 | u32 val; | |
3176ff3e | 288 | int pci_func_id = PCI_FUNC(pdev->devfn); |
3d396eb1 | 289 | |
cb8011ad | 290 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
6c80b18d | 291 | |
3176ff3e MT |
292 | if (pdev->class != 0x020000) { |
293 | printk(KERN_ERR"NetXen function %d, class %x will not" | |
294 | "be enabled.\n",pci_func_id, pdev->class); | |
ed25ffa1 AK |
295 | return -ENODEV; |
296 | } | |
3d396eb1 AK |
297 | if ((err = pci_enable_device(pdev))) |
298 | return err; | |
299 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
300 | err = -ENODEV; | |
301 | goto err_out_disable_pdev; | |
302 | } | |
303 | ||
304 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
305 | goto err_out_disable_pdev; | |
306 | ||
307 | pci_set_master(pdev); | |
44c10138 | 308 | if (pdev->revision == NX_P2_C1 && |
ed25ffa1 AK |
309 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && |
310 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 311 | pci_using_dac = 1; |
ed25ffa1 | 312 | } else { |
3d396eb1 AK |
313 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
314 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
315 | goto err_out_free_res; | |
316 | ||
317 | pci_using_dac = 0; | |
318 | } | |
319 | ||
3176ff3e MT |
320 | |
321 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
322 | if(!netdev) { | |
323 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
324 | "device block.Check system memory resource" | |
325 | " usage.\n", netxen_nic_driver_name); | |
326 | goto err_out_free_res; | |
327 | } | |
328 | ||
329 | SET_MODULE_OWNER(netdev); | |
330 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
331 | ||
332 | adapter = netdev->priv; | |
333 | memset(adapter, 0 , sizeof(struct netxen_adapter)); | |
334 | ||
335 | adapter->ahw.pdev = pdev; | |
13ba9c77 | 336 | adapter->ahw.pci_func = pci_func_id; |
6c80b18d MT |
337 | spin_lock_init(&adapter->tx_lock); |
338 | spin_lock_init(&adapter->lock); | |
13ba9c77 | 339 | |
3d396eb1 AK |
340 | /* remap phys address */ |
341 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
342 | mem_len = pci_resource_len(pdev, 0); | |
343 | ||
344 | /* 128 Meg of memory */ | |
6c80b18d MT |
345 | if (mem_len == NETXEN_PCI_128MB_SIZE) { |
346 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); | |
347 | mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, | |
348 | SECOND_PAGE_GROUP_SIZE); | |
349 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, | |
350 | THIRD_PAGE_GROUP_SIZE); | |
351 | first_page_group_start = FIRST_PAGE_GROUP_START; | |
352 | first_page_group_end = FIRST_PAGE_GROUP_END; | |
353 | } else if (mem_len == NETXEN_PCI_32MB_SIZE) { | |
354 | mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); | |
355 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - | |
356 | SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
357 | first_page_group_start = 0; | |
358 | first_page_group_end = 0; | |
359 | } else { | |
360 | err = -EIO; | |
361 | goto err_out_free_netdev; | |
362 | } | |
cb8011ad | 363 | |
6c80b18d MT |
364 | if (((mem_ptr0 == 0UL) && (mem_len == NETXEN_PCI_128MB_SIZE)) || |
365 | (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
ed25ffa1 | 366 | DPRINTK(ERR, |
cb8011ad AK |
367 | "Cannot remap adapter memory aborting.:" |
368 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
369 | mem_ptr0, mem_ptr1, mem_ptr2); | |
370 | ||
3d396eb1 | 371 | err = -EIO; |
ed25ffa1 AK |
372 | goto err_out_iounmap; |
373 | } | |
374 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
375 | db_len = pci_resource_len(pdev, 4); | |
376 | ||
377 | if (db_len == 0) { | |
378 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
379 | netxen_nic_driver_name); | |
380 | err = -EIO; | |
381 | goto err_out_iounmap; | |
382 | } | |
383 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
384 | db_len); | |
385 | ||
386 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 387 | if (!db_ptr) { |
ed25ffa1 AK |
388 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
389 | netxen_nic_driver_name); | |
390 | err = -EIO; | |
391 | goto err_out_iounmap; | |
3d396eb1 | 392 | } |
ed25ffa1 | 393 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 394 | |
6c80b18d MT |
395 | adapter->ahw.pci_base0 = mem_ptr0; |
396 | adapter->ahw.first_page_group_start = first_page_group_start; | |
397 | adapter->ahw.first_page_group_end = first_page_group_end; | |
398 | adapter->ahw.pci_base1 = mem_ptr1; | |
399 | adapter->ahw.pci_base2 = mem_ptr2; | |
400 | adapter->ahw.db_base = db_ptr; | |
401 | adapter->ahw.db_len = db_len; | |
3d396eb1 | 402 | |
3176ff3e MT |
403 | adapter->netdev = netdev; |
404 | adapter->pdev = pdev; | |
2d1a3bbd | 405 | |
406 | /* this will be read from FW later */ | |
407 | adapter->intr_scheme = -1; | |
408 | ||
409 | /* This will be reset for mezz cards */ | |
3176ff3e | 410 | adapter->portnum = pci_func_id; |
2d1a3bbd | 411 | adapter->status &= ~NETXEN_NETDEV_STATUS; |
3176ff3e MT |
412 | |
413 | netdev->open = netxen_nic_open; | |
414 | netdev->stop = netxen_nic_close; | |
415 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
6c80b18d | 416 | netdev->get_stats = netxen_nic_get_stats; |
3176ff3e MT |
417 | netdev->set_multicast_list = netxen_nic_set_multi; |
418 | netdev->set_mac_address = netxen_nic_set_mac; | |
419 | netdev->change_mtu = netxen_nic_change_mtu; | |
420 | netdev->tx_timeout = netxen_tx_timeout; | |
421 | netdev->watchdog_timeo = HZ; | |
422 | ||
423 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
424 | ||
425 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
426 | netdev->poll = netxen_nic_poll; | |
427 | netdev->weight = NETXEN_NETDEV_WEIGHT; | |
428 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
429 | netdev->poll_controller = netxen_nic_poll_controller; | |
430 | #endif | |
431 | /* ScatterGather support */ | |
432 | netdev->features = NETIF_F_SG; | |
433 | netdev->features |= NETIF_F_IP_CSUM; | |
434 | netdev->features |= NETIF_F_TSO; | |
435 | ||
436 | if (pci_using_dac) | |
437 | netdev->features |= NETIF_F_HIGHDMA; | |
438 | ||
644caeef | 439 | if (pci_enable_msi(pdev)) |
3176ff3e | 440 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; |
644caeef | 441 | else |
3176ff3e MT |
442 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; |
443 | ||
6c80b18d MT |
444 | netdev->irq = pdev->irq; |
445 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); | |
446 | ||
447 | /* | |
448 | * Set the CRB window to invalid. If any register in window 0 is | |
449 | * accessed it should set the window to 0 and then reset it to 1. | |
450 | */ | |
451 | adapter->curr_window = 255; | |
452 | ||
453 | /* initialize the adapter */ | |
454 | netxen_initialize_adapter_hw(adapter); | |
455 | ||
6c80b18d MT |
456 | /* |
457 | * Adapter in our case is quad port so initialize it before | |
458 | * initializing the ports | |
459 | */ | |
460 | ||
461 | netxen_initialize_adapter_ops(adapter); | |
462 | ||
463 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; | |
464 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) || | |
465 | (adapter->ahw.boardcfg.board_type == | |
466 | NETXEN_BRDTYPE_P2_SB31_2G)) | |
467 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
468 | else | |
469 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
470 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
471 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; | |
472 | ||
3d396eb1 AK |
473 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); |
474 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
475 | printk(KERN_ERR |
476 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
477 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
478 | err = -ENOMEM; |
479 | goto err_out_free_adapter; | |
480 | } | |
481 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
6c80b18d | 482 | adapter->cmd_buf_arr = cmd_buf_arr; |
3d396eb1 AK |
483 | |
484 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
485 | recv_ctx = &adapter->recv_ctx[i]; | |
486 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
487 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
488 | switch (RCV_DESC_TYPE(ring)) { | |
489 | case RCV_DESC_NORMAL: | |
490 | rcv_desc->max_rx_desc_count = | |
491 | adapter->max_rx_desc_count; | |
492 | rcv_desc->flags = RCV_DESC_NORMAL; | |
493 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
494 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
495 | break; | |
496 | ||
497 | case RCV_DESC_JUMBO: | |
498 | rcv_desc->max_rx_desc_count = | |
499 | adapter->max_jumbo_rx_desc_count; | |
500 | rcv_desc->flags = RCV_DESC_JUMBO; | |
501 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
502 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
503 | break; | |
504 | ||
ed25ffa1 AK |
505 | case RCV_RING_LRO: |
506 | rcv_desc->max_rx_desc_count = | |
507 | adapter->max_lro_rx_desc_count; | |
508 | rcv_desc->flags = RCV_DESC_LRO; | |
509 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
510 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
511 | break; | |
512 | ||
3d396eb1 AK |
513 | } |
514 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
515 | vmalloc(RCV_BUFFSIZE); | |
516 | ||
517 | if (rcv_desc->rx_buf_arr == NULL) { | |
ed25ffa1 AK |
518 | printk(KERN_ERR "%s: Could not allocate" |
519 | "rcv_desc->rx_buf_arr memory:%d\n", | |
520 | netxen_nic_driver_name, | |
521 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
522 | err = -ENOMEM; |
523 | goto err_out_free_rx_buffer; | |
524 | } | |
525 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
526 | } | |
527 | ||
528 | } | |
529 | ||
ed25ffa1 | 530 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
6c80b18d | 531 | |
13ba9c77 | 532 | /* Mezz cards have PCI function 0,2,3 enabled */ |
6c80b18d MT |
533 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ) |
534 | && (pci_func_id >= 2)) | |
13ba9c77 MT |
535 | adapter->portnum = pci_func_id - 2; |
536 | ||
cb8011ad | 537 | #ifdef CONFIG_IA64 |
13ba9c77 | 538 | if(adapter->portnum == 0) { |
3176ff3e MT |
539 | netxen_pinit_from_rom(adapter, 0); |
540 | udelay(500); | |
541 | netxen_load_firmware(adapter); | |
542 | } | |
cb8011ad AK |
543 | #endif |
544 | ||
3d396eb1 AK |
545 | init_timer(&adapter->watchdog_timer); |
546 | adapter->ahw.xg_linkup = 0; | |
547 | adapter->watchdog_timer.function = &netxen_watchdog; | |
548 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 549 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 AK |
550 | adapter->ahw.pdev = pdev; |
551 | adapter->proc_cmd_buf_counter = 0; | |
44c10138 | 552 | adapter->ahw.revision_id = pdev->revision; |
3d396eb1 | 553 | |
6c80b18d MT |
554 | /* make sure Window == 1 */ |
555 | netxen_nic_pci_change_crbwindow(adapter, 1); | |
556 | ||
3176ff3e MT |
557 | netxen_nic_update_cmd_producer(adapter, 0); |
558 | netxen_nic_update_cmd_consumer(adapter, 0); | |
6c80b18d | 559 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); |
3d396eb1 AK |
560 | |
561 | if (netxen_is_flash_supported(adapter) == 0 && | |
562 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
563 | valid_mac = 1; | |
564 | else | |
565 | valid_mac = 0; | |
566 | ||
3176ff3e | 567 | if (valid_mac) { |
13ba9c77 | 568 | unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum]; |
3176ff3e MT |
569 | netdev->dev_addr[0] = *(p + 5); |
570 | netdev->dev_addr[1] = *(p + 4); | |
571 | netdev->dev_addr[2] = *(p + 3); | |
572 | netdev->dev_addr[3] = *(p + 2); | |
573 | netdev->dev_addr[4] = *(p + 1); | |
574 | netdev->dev_addr[5] = *(p + 0); | |
575 | ||
576 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
577 | netdev->addr_len); | |
578 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
579 | printk(KERN_ERR "%s: Bad MAC address " | |
580 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
581 | netxen_nic_driver_name, | |
582 | netdev->dev_addr[0], | |
583 | netdev->dev_addr[1], | |
584 | netdev->dev_addr[2], | |
585 | netdev->dev_addr[3], | |
586 | netdev->dev_addr[4], | |
587 | netdev->dev_addr[5]); | |
588 | } else { | |
589 | if (adapter->macaddr_set) | |
590 | adapter->macaddr_set(adapter, | |
591 | netdev->dev_addr); | |
592 | } | |
593 | } | |
594 | ||
6c80b18d | 595 | if (adapter->portnum == 0) { |
13ba9c77 | 596 | err = netxen_initialize_adapter_offload(adapter); |
6c80b18d MT |
597 | if (err) |
598 | goto err_out_free_rx_buffer; | |
599 | val = readl(NETXEN_CRB_NORMALIZE(adapter, | |
600 | NETXEN_CAM_RAM(0x1fc))); | |
601 | if (val == 0x55555555) { | |
602 | /* This is the first boot after power up */ | |
644caeef | 603 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); |
96acb6eb DP |
604 | if (!(val & 0x4)) { |
605 | val |= 0x4; | |
606 | netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val); | |
607 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); | |
608 | if (!(val & 0x4)) | |
609 | printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n", | |
610 | netxen_nic_driver_name); | |
611 | } | |
6c80b18d MT |
612 | val = readl(NETXEN_CRB_NORMALIZE(adapter, |
613 | NETXEN_ROMUSB_GLB_SW_RESET)); | |
614 | printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val); | |
615 | if (val != 0x80000f) { | |
616 | /* clear the register for future unloads/loads */ | |
644caeef | 617 | writel(0, NETXEN_CRB_NORMALIZE(adapter, |
618 | NETXEN_CAM_RAM(0x1fc))); | |
619 | printk(KERN_ERR "ERROR in NetXen HW init sequence.\n"); | |
620 | err = -ENODEV; | |
621 | goto err_out_free_dev; | |
6c80b18d | 622 | } |
6c80b18d | 623 | } |
96acb6eb DP |
624 | |
625 | /* clear the register for future unloads/loads */ | |
626 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
6c80b18d MT |
627 | printk(KERN_INFO "State: 0x%0x\n", |
628 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
629 | ||
630 | /* | |
631 | * Tell the hardware our version number. | |
632 | */ | |
633 | i = (_NETXEN_NIC_LINUX_MAJOR << 16) | |
634 | | ((_NETXEN_NIC_LINUX_MINOR << 8)) | |
635 | | (_NETXEN_NIC_LINUX_SUBVERSION); | |
636 | writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION)); | |
3d396eb1 | 637 | |
3176ff3e MT |
638 | /* Unlock the HW, prompting the boot sequence */ |
639 | writel(1, | |
640 | NETXEN_CRB_NORMALIZE(adapter, | |
641 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
642 | /* Handshake with the card before we register the devices. */ | |
643 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
644 | } | |
3d396eb1 | 645 | |
3d396eb1 | 646 | /* |
6c80b18d | 647 | * See if the firmware gave us a virtual-physical port mapping. |
3d396eb1 | 648 | */ |
6c80b18d MT |
649 | i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum))); |
650 | if (i != 0x55555555) | |
651 | physical_port[adapter->portnum] = i; | |
652 | ||
3176ff3e MT |
653 | netif_carrier_off(netdev); |
654 | netif_stop_queue(netdev); | |
655 | ||
6c80b18d MT |
656 | if ((err = register_netdev(netdev))) { |
657 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
658 | " aborting\n", netxen_nic_driver_name, | |
659 | adapter->portnum); | |
660 | err = -EIO; | |
661 | goto err_out_free_dev; | |
662 | } | |
663 | ||
664 | pci_set_drvdata(pdev, adapter); | |
3d396eb1 AK |
665 | |
666 | switch (adapter->ahw.board_type) { | |
3176ff3e MT |
667 | case NETXEN_NIC_GBE: |
668 | printk(KERN_INFO "%s: QUAD GbE board initialized\n", | |
669 | netxen_nic_driver_name); | |
670 | break; | |
3d396eb1 | 671 | |
3176ff3e MT |
672 | case NETXEN_NIC_XGBE: |
673 | printk(KERN_INFO "%s: XGbE board initialized\n", | |
674 | netxen_nic_driver_name); | |
675 | break; | |
3d396eb1 AK |
676 | } |
677 | ||
678 | adapter->driver_mismatch = 0; | |
679 | ||
680 | return 0; | |
681 | ||
6c80b18d MT |
682 | err_out_free_dev: |
683 | if (adapter->portnum == 0) | |
684 | netxen_free_adapter_offload(adapter); | |
ed25ffa1 | 685 | |
6c80b18d | 686 | err_out_free_rx_buffer: |
3d396eb1 AK |
687 | for (i = 0; i < MAX_RCV_CTX; ++i) { |
688 | recv_ctx = &adapter->recv_ctx[i]; | |
689 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
690 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
691 | if (rcv_desc->rx_buf_arr != NULL) { | |
692 | vfree(rcv_desc->rx_buf_arr); | |
693 | rcv_desc->rx_buf_arr = NULL; | |
694 | } | |
695 | } | |
696 | } | |
3d396eb1 AK |
697 | vfree(cmd_buf_arr); |
698 | ||
6c80b18d MT |
699 | err_out_free_adapter: |
700 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
701 | pci_disable_msi(pdev); | |
702 | ||
3d396eb1 | 703 | pci_set_drvdata(pdev, NULL); |
3d396eb1 | 704 | |
ed25ffa1 AK |
705 | if (db_ptr) |
706 | iounmap(db_ptr); | |
707 | ||
6c80b18d | 708 | err_out_iounmap: |
ed25ffa1 AK |
709 | if (mem_ptr0) |
710 | iounmap(mem_ptr0); | |
711 | if (mem_ptr1) | |
712 | iounmap(mem_ptr1); | |
713 | if (mem_ptr2) | |
714 | iounmap(mem_ptr2); | |
cb8011ad | 715 | |
6c80b18d MT |
716 | err_out_free_netdev: |
717 | free_netdev(netdev); | |
718 | ||
719 | err_out_free_res: | |
3d396eb1 | 720 | pci_release_regions(pdev); |
6c80b18d MT |
721 | |
722 | err_out_disable_pdev: | |
3d396eb1 AK |
723 | pci_disable_device(pdev); |
724 | return err; | |
725 | } | |
726 | ||
727 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
728 | { | |
729 | struct netxen_adapter *adapter; | |
3176ff3e | 730 | struct net_device *netdev; |
3d396eb1 AK |
731 | struct netxen_rx_buffer *buffer; |
732 | struct netxen_recv_context *recv_ctx; | |
733 | struct netxen_rcv_desc_ctx *rcv_desc; | |
96acb6eb DP |
734 | int i, ctxid, ring; |
735 | static int init_firmware_done = 0; | |
3d396eb1 | 736 | |
6c80b18d | 737 | adapter = pci_get_drvdata(pdev); |
3d396eb1 AK |
738 | if (adapter == NULL) |
739 | return; | |
740 | ||
6c80b18d MT |
741 | netdev = adapter->netdev; |
742 | ||
96acb6eb DP |
743 | unregister_netdev(netdev); |
744 | ||
3176ff3e MT |
745 | if (adapter->stop_port) |
746 | adapter->stop_port(adapter); | |
747 | ||
96acb6eb | 748 | netxen_nic_disable_int(adapter); |
6c80b18d | 749 | |
96acb6eb DP |
750 | if (adapter->irq) |
751 | free_irq(adapter->irq, adapter); | |
3d396eb1 | 752 | |
96acb6eb DP |
753 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
754 | init_firmware_done++; | |
3d396eb1 | 755 | netxen_free_hw_resources(adapter); |
96acb6eb | 756 | } |
3d396eb1 | 757 | |
3d396eb1 AK |
758 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { |
759 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
760 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
761 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
762 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
763 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
764 | if (buffer->state == NETXEN_BUFFER_FREE) | |
765 | continue; | |
766 | pci_unmap_single(pdev, buffer->dma, | |
767 | rcv_desc->dma_size, | |
768 | PCI_DMA_FROMDEVICE); | |
769 | if (buffer->skb != NULL) | |
770 | dev_kfree_skb_any(buffer->skb); | |
771 | } | |
772 | vfree(rcv_desc->rx_buf_arr); | |
773 | } | |
774 | } | |
775 | ||
96acb6eb DP |
776 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) |
777 | pci_disable_msi(pdev); | |
6c80b18d MT |
778 | |
779 | vfree(adapter->cmd_buf_arr); | |
780 | ||
96acb6eb DP |
781 | pci_disable_device(pdev); |
782 | ||
783 | if (adapter->portnum == 0) { | |
784 | if (init_firmware_done) { | |
785 | dma_watchdog_shutdown_request(adapter); | |
786 | msleep(100); | |
787 | i = 100; | |
788 | while ((dma_watchdog_shutdown_poll_result(adapter) != 1) && i) { | |
789 | printk(KERN_INFO "dma_watchdog_shutdown_poll still in progress\n"); | |
790 | msleep(100); | |
791 | i--; | |
792 | } | |
793 | ||
794 | if (i == 0) { | |
795 | printk(KERN_ERR "dma_watchdog_shutdown_request failed\n"); | |
796 | return; | |
797 | } | |
798 | ||
799 | /* clear the register for future unloads/loads */ | |
800 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
801 | printk(KERN_INFO "State: 0x%0x\n", | |
802 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
803 | ||
804 | /* leave the hw in the same state as reboot */ | |
805 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); | |
806 | if (netxen_pinit_from_rom(adapter, 0)) | |
807 | return; | |
808 | msleep(1); | |
809 | if (netxen_load_firmware(adapter)) | |
810 | return; | |
811 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
812 | } | |
813 | ||
814 | /* clear the register for future unloads/loads */ | |
815 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
816 | printk(KERN_INFO "State: 0x%0x\n", | |
817 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
818 | ||
819 | dma_watchdog_shutdown_request(adapter); | |
820 | msleep(100); | |
821 | i = 100; | |
822 | while ((dma_watchdog_shutdown_poll_result(adapter) != 1) && i) { | |
823 | printk(KERN_INFO "dma_watchdog_shutdown_poll still in progress\n"); | |
824 | msleep(100); | |
825 | i--; | |
826 | } | |
827 | ||
828 | if (i) { | |
829 | netxen_free_adapter_offload(adapter); | |
830 | } else { | |
831 | printk(KERN_ERR "failed to dma shutdown\n"); | |
832 | return; | |
833 | } | |
834 | ||
835 | } | |
836 | ||
6c80b18d MT |
837 | iounmap(adapter->ahw.db_base); |
838 | iounmap(adapter->ahw.pci_base0); | |
839 | iounmap(adapter->ahw.pci_base1); | |
840 | iounmap(adapter->ahw.pci_base2); | |
595e3fb8 MT |
841 | |
842 | pci_release_regions(pdev); | |
595e3fb8 MT |
843 | pci_set_drvdata(pdev, NULL); |
844 | ||
6c80b18d | 845 | free_netdev(netdev); |
3d396eb1 AK |
846 | } |
847 | ||
848 | /* | |
849 | * Called when a network interface is made active | |
850 | * @returns 0 on success, negative value on failure | |
851 | */ | |
852 | static int netxen_nic_open(struct net_device *netdev) | |
853 | { | |
3176ff3e | 854 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
855 | int err = 0; |
856 | int ctx, ring; | |
857 | ||
858 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
859 | err = netxen_init_firmware(adapter); | |
860 | if (err != 0) { | |
861 | printk(KERN_ERR "Failed to init firmware\n"); | |
862 | return -EIO; | |
863 | } | |
864 | netxen_nic_flash_print(adapter); | |
865 | ||
866 | /* setup all the resources for the Phantom... */ | |
867 | /* this include the descriptors for rcv, tx, and status */ | |
868 | netxen_nic_clear_stats(adapter); | |
869 | err = netxen_nic_hw_resources(adapter); | |
870 | if (err) { | |
871 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
872 | err); | |
873 | return err; | |
874 | } | |
3d396eb1 | 875 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 876 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 877 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 878 | } |
ed25ffa1 | 879 | adapter->irq = adapter->ahw.pdev->irq; |
6c80b18d | 880 | err = request_irq(adapter->ahw.pdev->irq, netxen_intr, |
1c8e039a | 881 | IRQF_SHARED|IRQF_SAMPLE_RANDOM, netdev->name, |
6c80b18d | 882 | adapter); |
3d396eb1 AK |
883 | if (err) { |
884 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 885 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
886 | return err; |
887 | } | |
ed25ffa1 AK |
888 | |
889 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
890 | } | |
3176ff3e MT |
891 | if (!adapter->driver_mismatch) |
892 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3d396eb1 | 893 | |
3176ff3e | 894 | netxen_nic_enable_int(adapter); |
3d396eb1 AK |
895 | |
896 | /* Done here again so that even if phantom sw overwrote it, | |
897 | * we set it */ | |
80922fbc | 898 | if (adapter->macaddr_set) |
3176ff3e | 899 | adapter->macaddr_set(adapter, netdev->dev_addr); |
595e3fb8 MT |
900 | if (adapter->init_port |
901 | && adapter->init_port(adapter, adapter->portnum) != 0) { | |
6c80b18d | 902 | del_timer_sync(&adapter->watchdog_timer); |
595e3fb8 MT |
903 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
904 | netxen_nic_driver_name, adapter->portnum); | |
595e3fb8 MT |
905 | return -EIO; |
906 | } | |
907 | ||
3176ff3e | 908 | netxen_nic_set_link_parameters(adapter); |
3d396eb1 AK |
909 | |
910 | netxen_nic_set_multi(netdev); | |
ed25ffa1 | 911 | if (adapter->set_mtu) |
3176ff3e | 912 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 913 | |
3d396eb1 AK |
914 | if (!adapter->driver_mismatch) |
915 | netif_start_queue(netdev); | |
916 | ||
917 | return 0; | |
918 | } | |
919 | ||
920 | /* | |
921 | * netxen_nic_close - Disables a network interface entry point | |
922 | */ | |
923 | static int netxen_nic_close(struct net_device *netdev) | |
924 | { | |
3176ff3e | 925 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
926 | int i, j; |
927 | struct netxen_cmd_buffer *cmd_buff; | |
928 | struct netxen_skb_frag *buffrag; | |
929 | ||
930 | netif_carrier_off(netdev); | |
931 | netif_stop_queue(netdev); | |
932 | ||
3176ff3e MT |
933 | cmd_buff = adapter->cmd_buf_arr; |
934 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
935 | buffrag = cmd_buff->frag_array; | |
936 | if (buffrag->dma) { | |
937 | pci_unmap_single(adapter->pdev, buffrag->dma, | |
938 | buffrag->length, PCI_DMA_TODEVICE); | |
96acb6eb | 939 | buffrag->dma = 0ULL; |
3176ff3e MT |
940 | } |
941 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
942 | buffrag++; | |
3d396eb1 | 943 | if (buffrag->dma) { |
3176ff3e MT |
944 | pci_unmap_page(adapter->pdev, buffrag->dma, |
945 | buffrag->length, | |
946 | PCI_DMA_TODEVICE); | |
96acb6eb | 947 | buffrag->dma = 0ULL; |
3d396eb1 | 948 | } |
3d396eb1 | 949 | } |
3176ff3e MT |
950 | /* Free the skb we received in netxen_nic_xmit_frame */ |
951 | if (cmd_buff->skb) { | |
952 | dev_kfree_skb_any(cmd_buff->skb); | |
953 | cmd_buff->skb = NULL; | |
954 | } | |
955 | cmd_buff++; | |
3d396eb1 | 956 | } |
96acb6eb DP |
957 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
958 | FLUSH_SCHEDULED_WORK(); | |
959 | del_timer_sync(&adapter->watchdog_timer); | |
960 | } | |
3d396eb1 AK |
961 | |
962 | return 0; | |
963 | } | |
964 | ||
965 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
966 | { | |
3176ff3e | 967 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
968 | struct netxen_hardware_context *hw = &adapter->ahw; |
969 | unsigned int first_seg_len = skb->len - skb->data_len; | |
970 | struct netxen_skb_frag *buffrag; | |
971 | unsigned int i; | |
972 | ||
973 | u32 producer = 0; | |
974 | u32 saved_producer = 0; | |
975 | struct cmd_desc_type0 *hwdesc; | |
976 | int k; | |
977 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 AK |
978 | static int dropped_packet = 0; |
979 | int frag_count; | |
980 | u32 local_producer = 0; | |
981 | u32 max_tx_desc_count = 0; | |
982 | u32 last_cmd_consumer = 0; | |
983 | int no_of_desc; | |
984 | ||
3176ff3e | 985 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
986 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
987 | ||
988 | if (unlikely(skb->len <= 0)) { | |
989 | dev_kfree_skb_any(skb); | |
3176ff3e | 990 | adapter->stats.badskblen++; |
3d396eb1 AK |
991 | return NETDEV_TX_OK; |
992 | } | |
993 | ||
994 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
995 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
996 | "too large, can handle only %d frags\n", | |
997 | netxen_nic_driver_name, netdev->name, | |
998 | frag_count, MAX_BUFFERS_PER_CMD); | |
3176ff3e | 999 | adapter->stats.txdropped++; |
3d396eb1 AK |
1000 | if ((++dropped_packet & 0xff) == 0xff) |
1001 | printk("%s: %s droppped packets = %d\n", | |
1002 | netxen_nic_driver_name, netdev->name, | |
1003 | dropped_packet); | |
1004 | ||
1005 | return NETDEV_TX_OK; | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * Everything is set up. Now, we just need to transmit it out. | |
1010 | * Note that we have to copy the contents of buffer over to | |
1011 | * right place. Later on, this can be optimized out by de-coupling the | |
1012 | * producer index from the buffer index. | |
1013 | */ | |
1014 | retry_getting_window: | |
1015 | spin_lock_bh(&adapter->tx_lock); | |
3176ff3e | 1016 | if (adapter->total_threads >= MAX_XMIT_PRODUCERS) { |
3d396eb1 AK |
1017 | spin_unlock_bh(&adapter->tx_lock); |
1018 | /* | |
1019 | * Yield CPU | |
1020 | */ | |
1021 | if (!in_atomic()) | |
1022 | schedule(); | |
1023 | else { | |
1024 | for (i = 0; i < 20; i++) | |
1025 | cpu_relax(); /*This a nop instr on i386 */ | |
1026 | } | |
1027 | goto retry_getting_window; | |
1028 | } | |
1029 | local_producer = adapter->cmd_producer; | |
1030 | /* There 4 fragments per descriptor */ | |
1031 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
1032 | if (netdev->features & NETIF_F_TSO) { |
1033 | if (skb_shinfo(skb)->gso_size > 0) { | |
1034 | ||
3d396eb1 | 1035 | no_of_desc++; |
ab6a5bb6 | 1036 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 1037 | sizeof(struct ethhdr)) > |
ed25ffa1 | 1038 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
1039 | no_of_desc++; |
1040 | } | |
3d396eb1 AK |
1041 | } |
1042 | } | |
1043 | k = adapter->cmd_producer; | |
1044 | max_tx_desc_count = adapter->max_tx_desc_count; | |
1045 | last_cmd_consumer = adapter->last_cmd_consumer; | |
1046 | if ((k + no_of_desc) >= | |
1047 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
1048 | last_cmd_consumer)) { | |
ed25ffa1 | 1049 | netif_stop_queue(netdev); |
3176ff3e | 1050 | adapter->flags |= NETXEN_NETDEV_STATUS; |
3d396eb1 | 1051 | spin_unlock_bh(&adapter->tx_lock); |
ed25ffa1 | 1052 | return NETDEV_TX_BUSY; |
3d396eb1 AK |
1053 | } |
1054 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
1055 | adapter->cmd_producer = k; | |
1056 | adapter->total_threads++; | |
1057 | adapter->num_threads++; | |
1058 | ||
1059 | spin_unlock_bh(&adapter->tx_lock); | |
1060 | /* Copy the descriptors into the hardware */ | |
1061 | producer = local_producer; | |
1062 | saved_producer = producer; | |
1063 | hwdesc = &hw->cmd_desc_head[producer]; | |
1064 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
1065 | /* Take skb->data itself */ | |
1066 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 1067 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 1068 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 1069 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
1070 | } else { |
1071 | pbuf->mss = 0; | |
1072 | hwdesc->mss = 0; | |
1073 | } | |
3d396eb1 AK |
1074 | pbuf->total_length = skb->len; |
1075 | pbuf->skb = skb; | |
1076 | pbuf->cmd = TX_ETHER_PKT; | |
1077 | pbuf->frag_count = frag_count; | |
3176ff3e | 1078 | pbuf->port = adapter->portnum; |
3d396eb1 | 1079 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 1080 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
1081 | PCI_DMA_TODEVICE); |
1082 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
1083 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
1084 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
1085 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 1086 | |
3176ff3e | 1087 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
6c80b18d | 1088 | netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum); |
3d396eb1 AK |
1089 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
1090 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
1091 | ||
1092 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
1093 | struct skb_frag_struct *frag; | |
1094 | int len, temp_len; | |
1095 | unsigned long offset; | |
1096 | dma_addr_t temp_dma; | |
1097 | ||
1098 | /* move to next desc. if there is a need */ | |
1099 | if ((i & 0x3) == 0) { | |
1100 | k = 0; | |
1101 | producer = get_next_index(producer, | |
1102 | adapter->max_tx_desc_count); | |
1103 | hwdesc = &hw->cmd_desc_head[producer]; | |
1104 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
1105 | } | |
1106 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
1107 | len = frag->size; | |
1108 | offset = frag->page_offset; | |
1109 | ||
1110 | temp_len = len; | |
3176ff3e | 1111 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
1112 | len, PCI_DMA_TODEVICE); |
1113 | ||
1114 | buffrag++; | |
1115 | buffrag->dma = temp_dma; | |
1116 | buffrag->length = temp_len; | |
1117 | ||
1118 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
1119 | switch (k) { | |
1120 | case 0: | |
1121 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
1122 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
1123 | break; | |
1124 | case 1: | |
1125 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
1126 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
1127 | break; | |
1128 | case 2: | |
1129 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
1130 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
1131 | break; | |
1132 | case 3: | |
a608ab9c | 1133 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
1134 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
1135 | break; | |
1136 | } | |
1137 | frag++; | |
1138 | } | |
1139 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
1140 | ||
1141 | /* might change opcode to TX_TCP_LSO */ | |
1142 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
1143 | ||
1144 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
1145 | * the descriptor ring | |
1146 | */ | |
ed25ffa1 AK |
1147 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
1148 | == TX_TCP_LSO) { | |
3d396eb1 AK |
1149 | int hdr_len, first_hdr_len, more_hdr; |
1150 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
1151 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
1152 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
1153 | more_hdr = 1; |
1154 | } else { | |
1155 | first_hdr_len = hdr_len; | |
1156 | more_hdr = 0; | |
1157 | } | |
1158 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
1159 | hwdesc = &hw->cmd_desc_head[producer]; | |
1160 | ||
1161 | /* copy the first 64 bytes */ | |
ed25ffa1 | 1162 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 AK |
1163 | (void *)(skb->data), first_hdr_len); |
1164 | producer = get_next_index(producer, max_tx_desc_count); | |
1165 | ||
1166 | if (more_hdr) { | |
1167 | hwdesc = &hw->cmd_desc_head[producer]; | |
1168 | /* copy the next 64 bytes - should be enough except | |
1169 | * for pathological case | |
1170 | */ | |
d626f62b ACM |
1171 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
1172 | hwdesc, | |
1173 | (hdr_len - | |
1174 | first_hdr_len)); | |
3d396eb1 AK |
1175 | producer = get_next_index(producer, max_tx_desc_count); |
1176 | } | |
1177 | } | |
6c80b18d MT |
1178 | |
1179 | i = netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]); | |
1180 | ||
1181 | hw->cmd_desc_head[saved_producer].flags_opcode = | |
1182 | cpu_to_le16(hw->cmd_desc_head[saved_producer].flags_opcode); | |
1183 | hw->cmd_desc_head[saved_producer].num_of_buffers_total_length = | |
1184 | cpu_to_le32(hw->cmd_desc_head[saved_producer]. | |
1185 | num_of_buffers_total_length); | |
1186 | ||
3d396eb1 | 1187 | spin_lock_bh(&adapter->tx_lock); |
6c80b18d MT |
1188 | adapter->stats.txbytes += i; |
1189 | ||
3d396eb1 AK |
1190 | /* Code to update the adapter considering how many producer threads |
1191 | are currently working */ | |
1192 | if ((--adapter->num_threads) == 0) { | |
1193 | /* This is the last thread */ | |
1194 | u32 crb_producer = adapter->cmd_producer; | |
3176ff3e | 1195 | netxen_nic_update_cmd_producer(adapter, crb_producer); |
3d396eb1 AK |
1196 | wmb(); |
1197 | adapter->total_threads = 0; | |
3d396eb1 AK |
1198 | } |
1199 | ||
3176ff3e | 1200 | adapter->stats.xmitfinished++; |
3d396eb1 AK |
1201 | spin_unlock_bh(&adapter->tx_lock); |
1202 | ||
1203 | netdev->trans_start = jiffies; | |
1204 | ||
1205 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
1206 | ||
1207 | DPRINTK(INFO, "Done. Send\n"); | |
1208 | return NETDEV_TX_OK; | |
1209 | } | |
1210 | ||
1211 | static void netxen_watchdog(unsigned long v) | |
1212 | { | |
1213 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
1214 | |
1215 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
1216 | } |
1217 | ||
1218 | static void netxen_tx_timeout(struct net_device *netdev) | |
1219 | { | |
3176ff3e MT |
1220 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1221 | netdev_priv(netdev); | |
1222 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1223 | } |
1224 | ||
6d5aefb8 | 1225 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1226 | { |
3176ff3e MT |
1227 | struct netxen_adapter *adapter = |
1228 | container_of(work, struct netxen_adapter, tx_timeout_task); | |
3d396eb1 AK |
1229 | unsigned long flags; |
1230 | ||
1231 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
6c80b18d | 1232 | netxen_nic_driver_name, adapter->netdev->name); |
3d396eb1 | 1233 | |
3176ff3e | 1234 | spin_lock_irqsave(&adapter->lock, flags); |
6c80b18d MT |
1235 | netxen_nic_close(adapter->netdev); |
1236 | netxen_nic_open(adapter->netdev); | |
3176ff3e | 1237 | spin_unlock_irqrestore(&adapter->lock, flags); |
6c80b18d MT |
1238 | adapter->netdev->trans_start = jiffies; |
1239 | netif_wake_queue(adapter->netdev); | |
3d396eb1 AK |
1240 | } |
1241 | ||
1242 | static int | |
1243 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
1244 | { | |
1245 | u32 ret = 0; | |
2d1a3bbd | 1246 | u32 our_int = 0; |
3d396eb1 AK |
1247 | |
1248 | DPRINTK(INFO, "Entered handle ISR\n"); | |
595e3fb8 | 1249 | adapter->stats.ints++; |
3d396eb1 | 1250 | |
3d396eb1 | 1251 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { |
3176ff3e MT |
1252 | our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); |
1253 | /* not our interrupt */ | |
1254 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
ed25ffa1 | 1255 | return ret; |
2d1a3bbd | 1256 | } |
3d396eb1 | 1257 | |
2d1a3bbd | 1258 | netxen_nic_disable_int(adapter); |
1259 | ||
1260 | if (adapter->intr_scheme == INTR_SCHEME_PERPORT) { | |
1261 | /* claim interrupt */ | |
1262 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
1263 | writel(our_int & ~((u32)(0x80 << adapter->portnum)), | |
1264 | NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
1265 | } | |
3d396eb1 | 1266 | } |
3d396eb1 AK |
1267 | |
1268 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { | |
1269 | if (netif_rx_schedule_prep(netdev)) { | |
1270 | /* | |
1271 | * Interrupts are already disabled. | |
1272 | */ | |
1273 | __netif_rx_schedule(netdev); | |
1274 | } else { | |
1275 | static unsigned int intcount = 0; | |
1276 | if ((++intcount & 0xfff) == 0xfff) | |
2d1a3bbd | 1277 | DPRINTK(KERN_ERR |
3d396eb1 AK |
1278 | "%s: %s interrupt %d while in poll\n", |
1279 | netxen_nic_driver_name, netdev->name, | |
1280 | intcount); | |
1281 | } | |
1282 | ret = 1; | |
1283 | } | |
1284 | ||
1285 | if (ret == 0) { | |
1286 | netxen_nic_enable_int(adapter); | |
1287 | } | |
1288 | ||
1289 | return ret; | |
1290 | } | |
1291 | ||
1292 | /* | |
1293 | * netxen_intr - Interrupt Handler | |
1294 | * @irq: interrupt number | |
1295 | * data points to adapter stucture (which may be handling more than 1 port | |
1296 | */ | |
1494a814 | 1297 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1298 | { |
1299 | struct netxen_adapter *adapter; | |
3d396eb1 | 1300 | struct net_device *netdev; |
3d396eb1 AK |
1301 | |
1302 | if (unlikely(!irq)) { | |
1303 | return IRQ_NONE; /* Not our interrupt */ | |
1304 | } | |
1305 | ||
1306 | adapter = (struct netxen_adapter *)data; | |
3176ff3e MT |
1307 | netdev = adapter->netdev; |
1308 | /* process our status queue (for all 4 ports) */ | |
1309 | if (netif_running(netdev)) | |
1310 | netxen_handle_int(adapter, netdev); | |
3d396eb1 AK |
1311 | |
1312 | return IRQ_HANDLED; | |
1313 | } | |
1314 | ||
1315 | static int netxen_nic_poll(struct net_device *netdev, int *budget) | |
1316 | { | |
3176ff3e | 1317 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
1318 | int work_to_do = min(*budget, netdev->quota); |
1319 | int done = 1; | |
1320 | int ctx; | |
1321 | int this_work_done; | |
80922fbc | 1322 | int work_done = 0; |
3d396eb1 AK |
1323 | |
1324 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
3d396eb1 | 1325 | |
80922fbc | 1326 | work_done = 0; |
3d396eb1 AK |
1327 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1328 | /* | |
1329 | * Fairness issue. This will give undue weight to the | |
1330 | * receive context 0. | |
1331 | */ | |
1332 | ||
1333 | /* | |
1334 | * To avoid starvation, we give each of our receivers, | |
1335 | * a fraction of the quota. Sometimes, it might happen that we | |
1336 | * have enough quota to process every packet, but since all the | |
1337 | * packets are on one context, it gets only half of the quota, | |
1338 | * and ends up not processing it. | |
1339 | */ | |
1340 | this_work_done = netxen_process_rcv_ring(adapter, ctx, | |
1341 | work_to_do / | |
1342 | MAX_RCV_CTX); | |
80922fbc | 1343 | work_done += this_work_done; |
3d396eb1 AK |
1344 | } |
1345 | ||
80922fbc AK |
1346 | netdev->quota -= work_done; |
1347 | *budget -= work_done; | |
3d396eb1 | 1348 | |
ed25ffa1 | 1349 | if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0) |
3d396eb1 AK |
1350 | done = 0; |
1351 | ||
ed25ffa1 AK |
1352 | if (netxen_process_cmd_ring((unsigned long)adapter) == 0) |
1353 | done = 0; | |
3d396eb1 AK |
1354 | |
1355 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
80922fbc | 1356 | work_done, work_to_do); |
3d396eb1 AK |
1357 | if (done) { |
1358 | netif_rx_complete(netdev); | |
1359 | netxen_nic_enable_int(adapter); | |
1360 | } | |
1361 | ||
edf90163 | 1362 | return !done; |
3d396eb1 AK |
1363 | } |
1364 | ||
1365 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1366 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1367 | { | |
3176ff3e | 1368 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1369 | disable_irq(adapter->irq); |
1494a814 | 1370 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1371 | enable_irq(adapter->irq); |
1372 | } | |
1373 | #endif | |
3d396eb1 AK |
1374 | |
1375 | static struct pci_driver netxen_driver = { | |
1376 | .name = netxen_nic_driver_name, | |
1377 | .id_table = netxen_pci_tbl, | |
1378 | .probe = netxen_nic_probe, | |
1379 | .remove = __devexit_p(netxen_nic_remove) | |
1380 | }; | |
1381 | ||
1382 | /* Driver Registration on NetXen card */ | |
1383 | ||
1384 | static int __init netxen_init_module(void) | |
1385 | { | |
ed25ffa1 AK |
1386 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) |
1387 | return -ENOMEM; | |
1388 | ||
184231bd | 1389 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1390 | } |
1391 | ||
1392 | module_init(netxen_init_module); | |
1393 | ||
1394 | static void __exit netxen_exit_module(void) | |
1395 | { | |
1396 | /* | |
1397 | * Wait for some time to allow the dma to drain, if any. | |
1398 | */ | |
96acb6eb | 1399 | msleep(100); |
3d396eb1 | 1400 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1401 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1402 | } |
1403 | ||
1404 | module_exit(netxen_exit_module); |