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 | 41 | #include <linux/dma-mapping.h> |
c9bdd4b5 | 42 | #include <net/ip.h> |
1494a814 | 43 | |
3d396eb1 AK |
44 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
45 | MODULE_LICENSE("GPL"); | |
46 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
47 | ||
ceded32f | 48 | char netxen_nic_driver_name[] = "netxen_nic"; |
3d396eb1 | 49 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
cb8011ad | 50 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 AK |
51 | |
52 | #define NETXEN_NETDEV_WEIGHT 120 | |
53 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 54 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 | 55 | |
ed25ffa1 AK |
56 | #define DMA_32BIT_MASK 0x00000000ffffffffULL |
57 | #define DMA_35BIT_MASK 0x00000007ffffffffULL | |
58 | ||
3d396eb1 AK |
59 | /* Local functions to NetXen NIC driver */ |
60 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
61 | const struct pci_device_id *ent); | |
62 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); | |
63 | static int netxen_nic_open(struct net_device *netdev); | |
64 | static int netxen_nic_close(struct net_device *netdev); | |
65 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
66 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 67 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 AK |
68 | static void netxen_watchdog(unsigned long); |
69 | static int netxen_handle_int(struct netxen_adapter *, struct net_device *); | |
bea3348e | 70 | static int netxen_nic_poll(struct napi_struct *napi, int budget); |
3d396eb1 AK |
71 | #ifdef CONFIG_NET_POLL_CONTROLLER |
72 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
73 | #endif | |
1494a814 | 74 | static irqreturn_t netxen_intr(int irq, void *data); |
3d396eb1 | 75 | |
6c80b18d MT |
76 | int physical_port[] = {0, 1, 2, 3}; |
77 | ||
3d396eb1 AK |
78 | /* PCI Device ID Table */ |
79 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
80 | {PCI_DEVICE(0x4040, 0x0001)}, | |
81 | {PCI_DEVICE(0x4040, 0x0002)}, | |
82 | {PCI_DEVICE(0x4040, 0x0003)}, | |
83 | {PCI_DEVICE(0x4040, 0x0004)}, | |
84 | {PCI_DEVICE(0x4040, 0x0005)}, | |
0d390734 AK |
85 | {PCI_DEVICE(0x4040, 0x0024)}, |
86 | {PCI_DEVICE(0x4040, 0x0025)}, | |
3d396eb1 AK |
87 | {0,} |
88 | }; | |
89 | ||
90 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
91 | ||
ed25ffa1 AK |
92 | struct workqueue_struct *netxen_workq; |
93 | static void netxen_watchdog(unsigned long); | |
94 | ||
3176ff3e MT |
95 | static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, |
96 | uint32_t crb_producer) | |
97 | { | |
98 | switch (adapter->portnum) { | |
99 | case 0: | |
100 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
101 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
102 | return; | |
103 | case 1: | |
104 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
105 | (adapter, CRB_CMD_PRODUCER_OFFSET_1)); | |
106 | return; | |
107 | case 2: | |
108 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
109 | (adapter, CRB_CMD_PRODUCER_OFFSET_2)); | |
110 | return; | |
111 | case 3: | |
112 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
113 | (adapter, CRB_CMD_PRODUCER_OFFSET_3)); | |
114 | return; | |
115 | default: | |
116 | printk(KERN_WARNING "We tried to update " | |
117 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
118 | "PCI function id %d\n", | |
119 | adapter->portnum); | |
120 | return; | |
121 | } | |
122 | } | |
123 | ||
124 | static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, | |
125 | u32 crb_consumer) | |
126 | { | |
127 | switch (adapter->portnum) { | |
128 | case 0: | |
129 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
130 | (adapter, CRB_CMD_CONSUMER_OFFSET)); | |
131 | return; | |
132 | case 1: | |
133 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
134 | (adapter, CRB_CMD_CONSUMER_OFFSET_1)); | |
135 | return; | |
136 | case 2: | |
137 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
138 | (adapter, CRB_CMD_CONSUMER_OFFSET_2)); | |
139 | return; | |
140 | case 3: | |
141 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
142 | (adapter, CRB_CMD_CONSUMER_OFFSET_3)); | |
143 | return; | |
144 | default: | |
145 | printk(KERN_WARNING "We tried to update " | |
146 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
147 | "PCI function id %d\n", | |
148 | adapter->portnum); | |
149 | return; | |
150 | } | |
151 | } | |
152 | ||
153 | #define ADAPTER_LIST_SIZE 12 | |
154 | int netxen_cards_found; | |
155 | ||
4638aef1 SH |
156 | static void netxen_nic_disable_int(struct netxen_adapter *adapter) |
157 | { | |
158 | uint32_t mask = 0x7ff; | |
159 | int retries = 32; | |
160 | ||
161 | DPRINTK(1, INFO, "Entered ISR Disable \n"); | |
162 | ||
163 | switch (adapter->portnum) { | |
164 | case 0: | |
165 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0)); | |
166 | break; | |
167 | case 1: | |
168 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1)); | |
169 | break; | |
170 | case 2: | |
171 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2)); | |
172 | break; | |
173 | case 3: | |
174 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3)); | |
175 | break; | |
176 | } | |
177 | ||
178 | if (adapter->intr_scheme != -1 && | |
179 | adapter->intr_scheme != INTR_SCHEME_PERPORT) | |
180 | writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
181 | ||
182 | /* Window = 0 or 1 */ | |
183 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
184 | do { | |
185 | writel(0xffffffff, | |
186 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS)); | |
187 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
188 | if (!(mask & 0x80)) | |
189 | break; | |
190 | udelay(10); | |
191 | } while (--retries); | |
192 | ||
193 | if (!retries) { | |
194 | printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n", | |
195 | netxen_nic_driver_name); | |
196 | } | |
197 | } | |
198 | ||
199 | DPRINTK(1, INFO, "Done with Disable Int\n"); | |
200 | } | |
201 | ||
202 | static void netxen_nic_enable_int(struct netxen_adapter *adapter) | |
203 | { | |
204 | u32 mask; | |
205 | ||
206 | DPRINTK(1, INFO, "Entered ISR Enable \n"); | |
207 | ||
208 | if (adapter->intr_scheme != -1 && | |
209 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
210 | switch (adapter->ahw.board_type) { | |
211 | case NETXEN_NIC_GBE: | |
212 | mask = 0x77b; | |
213 | break; | |
214 | case NETXEN_NIC_XGBE: | |
215 | mask = 0x77f; | |
216 | break; | |
217 | default: | |
218 | mask = 0x7ff; | |
219 | break; | |
220 | } | |
221 | ||
222 | writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
223 | } | |
224 | ||
225 | switch (adapter->portnum) { | |
226 | case 0: | |
227 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_0)); | |
228 | break; | |
229 | case 1: | |
230 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_1)); | |
231 | break; | |
232 | case 2: | |
233 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_2)); | |
234 | break; | |
235 | case 3: | |
236 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, CRB_SW_INT_MASK_3)); | |
237 | break; | |
238 | } | |
239 | ||
240 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
241 | mask = 0xbff; | |
242 | if (adapter->intr_scheme != -1 && | |
243 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
244 | writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
245 | } | |
246 | writel(mask, | |
247 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK)); | |
248 | } | |
249 | ||
250 | DPRINTK(1, INFO, "Done with enable Int\n"); | |
251 | } | |
252 | ||
3d396eb1 AK |
253 | /* |
254 | * netxen_nic_probe() | |
255 | * | |
256 | * The Linux system will invoke this after identifying the vendor ID and | |
257 | * device Id in the pci_tbl supported by this module. | |
258 | * | |
259 | * A quad port card has one operational PCI config space, (function 0), | |
260 | * which is used to access all four ports. | |
261 | * | |
262 | * This routine will initialize the adapter, and setup the global parameters | |
263 | * along with the port's specific structure. | |
264 | */ | |
265 | static int __devinit | |
266 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
267 | { | |
268 | struct net_device *netdev = NULL; | |
269 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
270 | void __iomem *mem_ptr0 = NULL; |
271 | void __iomem *mem_ptr1 = NULL; | |
272 | void __iomem *mem_ptr2 = NULL; | |
6c80b18d MT |
273 | unsigned long first_page_group_end; |
274 | unsigned long first_page_group_start; | |
275 | ||
cb8011ad | 276 | |
a608ab9c | 277 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 278 | unsigned long mem_base, mem_len, db_base, db_len; |
3176ff3e | 279 | int pci_using_dac, i = 0, err; |
3d396eb1 AK |
280 | int ring; |
281 | struct netxen_recv_context *recv_ctx = NULL; | |
282 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
283 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
284 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
6c80b18d MT |
285 | int valid_mac = 0; |
286 | u32 val; | |
3176ff3e | 287 | int pci_func_id = PCI_FUNC(pdev->devfn); |
3d396eb1 | 288 | |
cb8011ad | 289 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
6c80b18d | 290 | |
3176ff3e MT |
291 | if (pdev->class != 0x020000) { |
292 | printk(KERN_ERR"NetXen function %d, class %x will not" | |
293 | "be enabled.\n",pci_func_id, pdev->class); | |
ed25ffa1 AK |
294 | return -ENODEV; |
295 | } | |
3d396eb1 AK |
296 | if ((err = pci_enable_device(pdev))) |
297 | return err; | |
298 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
299 | err = -ENODEV; | |
300 | goto err_out_disable_pdev; | |
301 | } | |
302 | ||
303 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
304 | goto err_out_disable_pdev; | |
305 | ||
306 | pci_set_master(pdev); | |
44c10138 | 307 | if (pdev->revision == NX_P2_C1 && |
ed25ffa1 AK |
308 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && |
309 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 310 | pci_using_dac = 1; |
ed25ffa1 | 311 | } else { |
3d396eb1 AK |
312 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
313 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
314 | goto err_out_free_res; | |
315 | ||
316 | pci_using_dac = 0; | |
317 | } | |
318 | ||
3176ff3e MT |
319 | |
320 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
321 | if(!netdev) { | |
322 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
323 | "device block.Check system memory resource" | |
324 | " usage.\n", netxen_nic_driver_name); | |
325 | goto err_out_free_res; | |
326 | } | |
327 | ||
3176ff3e MT |
328 | SET_NETDEV_DEV(netdev, &pdev->dev); |
329 | ||
330 | adapter = netdev->priv; | |
3176ff3e MT |
331 | |
332 | adapter->ahw.pdev = pdev; | |
13ba9c77 | 333 | adapter->ahw.pci_func = pci_func_id; |
6c80b18d | 334 | spin_lock_init(&adapter->tx_lock); |
13ba9c77 | 335 | |
3d396eb1 AK |
336 | /* remap phys address */ |
337 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
338 | mem_len = pci_resource_len(pdev, 0); | |
339 | ||
340 | /* 128 Meg of memory */ | |
6c80b18d MT |
341 | if (mem_len == NETXEN_PCI_128MB_SIZE) { |
342 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); | |
343 | mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, | |
344 | SECOND_PAGE_GROUP_SIZE); | |
345 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, | |
346 | THIRD_PAGE_GROUP_SIZE); | |
347 | first_page_group_start = FIRST_PAGE_GROUP_START; | |
348 | first_page_group_end = FIRST_PAGE_GROUP_END; | |
349 | } else if (mem_len == NETXEN_PCI_32MB_SIZE) { | |
350 | mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); | |
351 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - | |
352 | SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
353 | first_page_group_start = 0; | |
354 | first_page_group_end = 0; | |
355 | } else { | |
356 | err = -EIO; | |
357 | goto err_out_free_netdev; | |
358 | } | |
cb8011ad | 359 | |
6c80b18d MT |
360 | if (((mem_ptr0 == 0UL) && (mem_len == NETXEN_PCI_128MB_SIZE)) || |
361 | (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
ed25ffa1 | 362 | DPRINTK(ERR, |
cb8011ad AK |
363 | "Cannot remap adapter memory aborting.:" |
364 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
365 | mem_ptr0, mem_ptr1, mem_ptr2); | |
366 | ||
3d396eb1 | 367 | err = -EIO; |
ed25ffa1 AK |
368 | goto err_out_iounmap; |
369 | } | |
370 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
371 | db_len = pci_resource_len(pdev, 4); | |
372 | ||
373 | if (db_len == 0) { | |
374 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
375 | netxen_nic_driver_name); | |
376 | err = -EIO; | |
377 | goto err_out_iounmap; | |
378 | } | |
379 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
380 | db_len); | |
381 | ||
382 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 383 | if (!db_ptr) { |
ed25ffa1 AK |
384 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
385 | netxen_nic_driver_name); | |
386 | err = -EIO; | |
387 | goto err_out_iounmap; | |
3d396eb1 | 388 | } |
ed25ffa1 | 389 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 390 | |
6c80b18d MT |
391 | adapter->ahw.pci_base0 = mem_ptr0; |
392 | adapter->ahw.first_page_group_start = first_page_group_start; | |
393 | adapter->ahw.first_page_group_end = first_page_group_end; | |
394 | adapter->ahw.pci_base1 = mem_ptr1; | |
395 | adapter->ahw.pci_base2 = mem_ptr2; | |
396 | adapter->ahw.db_base = db_ptr; | |
397 | adapter->ahw.db_len = db_len; | |
3d396eb1 | 398 | |
3176ff3e MT |
399 | adapter->netdev = netdev; |
400 | adapter->pdev = pdev; | |
2d1a3bbd | 401 | |
bea3348e SH |
402 | netif_napi_add(netdev, &adapter->napi, |
403 | netxen_nic_poll, NETXEN_NETDEV_WEIGHT); | |
404 | ||
2d1a3bbd | 405 | /* this will be read from FW later */ |
406 | adapter->intr_scheme = -1; | |
407 | ||
408 | /* This will be reset for mezz cards */ | |
3176ff3e | 409 | adapter->portnum = pci_func_id; |
2d1a3bbd | 410 | adapter->status &= ~NETXEN_NETDEV_STATUS; |
3176ff3e MT |
411 | |
412 | netdev->open = netxen_nic_open; | |
413 | netdev->stop = netxen_nic_close; | |
414 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
6c80b18d | 415 | netdev->get_stats = netxen_nic_get_stats; |
3176ff3e MT |
416 | netdev->set_multicast_list = netxen_nic_set_multi; |
417 | netdev->set_mac_address = netxen_nic_set_mac; | |
418 | netdev->change_mtu = netxen_nic_change_mtu; | |
419 | netdev->tx_timeout = netxen_tx_timeout; | |
420 | netdev->watchdog_timeo = HZ; | |
421 | ||
422 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
423 | ||
424 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
3176ff3e MT |
425 | #ifdef CONFIG_NET_POLL_CONTROLLER |
426 | netdev->poll_controller = netxen_nic_poll_controller; | |
427 | #endif | |
428 | /* ScatterGather support */ | |
429 | netdev->features = NETIF_F_SG; | |
430 | netdev->features |= NETIF_F_IP_CSUM; | |
431 | netdev->features |= NETIF_F_TSO; | |
432 | ||
433 | if (pci_using_dac) | |
434 | netdev->features |= NETIF_F_HIGHDMA; | |
435 | ||
644caeef | 436 | if (pci_enable_msi(pdev)) |
3176ff3e | 437 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; |
644caeef | 438 | else |
3176ff3e MT |
439 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; |
440 | ||
6c80b18d MT |
441 | netdev->irq = pdev->irq; |
442 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); | |
443 | ||
444 | /* | |
445 | * Set the CRB window to invalid. If any register in window 0 is | |
446 | * accessed it should set the window to 0 and then reset it to 1. | |
447 | */ | |
448 | adapter->curr_window = 255; | |
449 | ||
450 | /* initialize the adapter */ | |
451 | netxen_initialize_adapter_hw(adapter); | |
452 | ||
6c80b18d MT |
453 | /* |
454 | * Adapter in our case is quad port so initialize it before | |
455 | * initializing the ports | |
456 | */ | |
457 | ||
458 | netxen_initialize_adapter_ops(adapter); | |
459 | ||
460 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; | |
461 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) || | |
462 | (adapter->ahw.boardcfg.board_type == | |
463 | NETXEN_BRDTYPE_P2_SB31_2G)) | |
464 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
465 | else | |
466 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
467 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
468 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; | |
469 | ||
3d396eb1 AK |
470 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); |
471 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
472 | printk(KERN_ERR |
473 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
474 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
475 | err = -ENOMEM; |
476 | goto err_out_free_adapter; | |
477 | } | |
478 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
6c80b18d | 479 | adapter->cmd_buf_arr = cmd_buf_arr; |
3d396eb1 AK |
480 | |
481 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
482 | recv_ctx = &adapter->recv_ctx[i]; | |
483 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
484 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
485 | switch (RCV_DESC_TYPE(ring)) { | |
486 | case RCV_DESC_NORMAL: | |
487 | rcv_desc->max_rx_desc_count = | |
488 | adapter->max_rx_desc_count; | |
489 | rcv_desc->flags = RCV_DESC_NORMAL; | |
490 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
491 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
492 | break; | |
493 | ||
494 | case RCV_DESC_JUMBO: | |
495 | rcv_desc->max_rx_desc_count = | |
496 | adapter->max_jumbo_rx_desc_count; | |
497 | rcv_desc->flags = RCV_DESC_JUMBO; | |
498 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
499 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
500 | break; | |
501 | ||
ed25ffa1 AK |
502 | case RCV_RING_LRO: |
503 | rcv_desc->max_rx_desc_count = | |
504 | adapter->max_lro_rx_desc_count; | |
505 | rcv_desc->flags = RCV_DESC_LRO; | |
506 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
507 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
508 | break; | |
509 | ||
3d396eb1 AK |
510 | } |
511 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
512 | vmalloc(RCV_BUFFSIZE); | |
513 | ||
514 | if (rcv_desc->rx_buf_arr == NULL) { | |
ed25ffa1 AK |
515 | printk(KERN_ERR "%s: Could not allocate" |
516 | "rcv_desc->rx_buf_arr memory:%d\n", | |
517 | netxen_nic_driver_name, | |
518 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
519 | err = -ENOMEM; |
520 | goto err_out_free_rx_buffer; | |
521 | } | |
522 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
523 | } | |
524 | ||
525 | } | |
526 | ||
ed25ffa1 | 527 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
6c80b18d | 528 | |
13ba9c77 | 529 | /* Mezz cards have PCI function 0,2,3 enabled */ |
6c80b18d MT |
530 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ) |
531 | && (pci_func_id >= 2)) | |
13ba9c77 MT |
532 | adapter->portnum = pci_func_id - 2; |
533 | ||
cb8011ad | 534 | #ifdef CONFIG_IA64 |
13ba9c77 | 535 | if(adapter->portnum == 0) { |
3176ff3e MT |
536 | netxen_pinit_from_rom(adapter, 0); |
537 | udelay(500); | |
538 | netxen_load_firmware(adapter); | |
539 | } | |
cb8011ad AK |
540 | #endif |
541 | ||
3d396eb1 AK |
542 | init_timer(&adapter->watchdog_timer); |
543 | adapter->ahw.xg_linkup = 0; | |
544 | adapter->watchdog_timer.function = &netxen_watchdog; | |
545 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 546 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 AK |
547 | adapter->ahw.pdev = pdev; |
548 | adapter->proc_cmd_buf_counter = 0; | |
44c10138 | 549 | adapter->ahw.revision_id = pdev->revision; |
3d396eb1 | 550 | |
6c80b18d MT |
551 | /* make sure Window == 1 */ |
552 | netxen_nic_pci_change_crbwindow(adapter, 1); | |
553 | ||
3176ff3e MT |
554 | netxen_nic_update_cmd_producer(adapter, 0); |
555 | netxen_nic_update_cmd_consumer(adapter, 0); | |
6c80b18d | 556 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); |
3d396eb1 AK |
557 | |
558 | if (netxen_is_flash_supported(adapter) == 0 && | |
559 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
560 | valid_mac = 1; | |
561 | else | |
562 | valid_mac = 0; | |
563 | ||
3176ff3e | 564 | if (valid_mac) { |
13ba9c77 | 565 | unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum]; |
3176ff3e MT |
566 | netdev->dev_addr[0] = *(p + 5); |
567 | netdev->dev_addr[1] = *(p + 4); | |
568 | netdev->dev_addr[2] = *(p + 3); | |
569 | netdev->dev_addr[3] = *(p + 2); | |
570 | netdev->dev_addr[4] = *(p + 1); | |
571 | netdev->dev_addr[5] = *(p + 0); | |
572 | ||
573 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
574 | netdev->addr_len); | |
575 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
576 | printk(KERN_ERR "%s: Bad MAC address " | |
577 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
578 | netxen_nic_driver_name, | |
579 | netdev->dev_addr[0], | |
580 | netdev->dev_addr[1], | |
581 | netdev->dev_addr[2], | |
582 | netdev->dev_addr[3], | |
583 | netdev->dev_addr[4], | |
584 | netdev->dev_addr[5]); | |
585 | } else { | |
586 | if (adapter->macaddr_set) | |
587 | adapter->macaddr_set(adapter, | |
588 | netdev->dev_addr); | |
589 | } | |
590 | } | |
591 | ||
6c80b18d | 592 | if (adapter->portnum == 0) { |
13ba9c77 | 593 | err = netxen_initialize_adapter_offload(adapter); |
6c80b18d MT |
594 | if (err) |
595 | goto err_out_free_rx_buffer; | |
596 | val = readl(NETXEN_CRB_NORMALIZE(adapter, | |
597 | NETXEN_CAM_RAM(0x1fc))); | |
598 | if (val == 0x55555555) { | |
599 | /* This is the first boot after power up */ | |
644caeef | 600 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); |
96acb6eb DP |
601 | if (!(val & 0x4)) { |
602 | val |= 0x4; | |
603 | netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val); | |
604 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); | |
605 | if (!(val & 0x4)) | |
606 | printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n", | |
607 | netxen_nic_driver_name); | |
608 | } | |
6c80b18d MT |
609 | val = readl(NETXEN_CRB_NORMALIZE(adapter, |
610 | NETXEN_ROMUSB_GLB_SW_RESET)); | |
611 | printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val); | |
612 | if (val != 0x80000f) { | |
613 | /* clear the register for future unloads/loads */ | |
644caeef | 614 | writel(0, NETXEN_CRB_NORMALIZE(adapter, |
615 | NETXEN_CAM_RAM(0x1fc))); | |
616 | printk(KERN_ERR "ERROR in NetXen HW init sequence.\n"); | |
617 | err = -ENODEV; | |
618 | goto err_out_free_dev; | |
6c80b18d | 619 | } |
6c80b18d | 620 | } |
96acb6eb DP |
621 | |
622 | /* clear the register for future unloads/loads */ | |
623 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
6c80b18d MT |
624 | printk(KERN_INFO "State: 0x%0x\n", |
625 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
626 | ||
627 | /* | |
628 | * Tell the hardware our version number. | |
629 | */ | |
630 | i = (_NETXEN_NIC_LINUX_MAJOR << 16) | |
631 | | ((_NETXEN_NIC_LINUX_MINOR << 8)) | |
632 | | (_NETXEN_NIC_LINUX_SUBVERSION); | |
633 | writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION)); | |
3d396eb1 | 634 | |
3176ff3e MT |
635 | /* Unlock the HW, prompting the boot sequence */ |
636 | writel(1, | |
637 | NETXEN_CRB_NORMALIZE(adapter, | |
638 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
639 | /* Handshake with the card before we register the devices. */ | |
640 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
641 | } | |
3d396eb1 | 642 | |
3d396eb1 | 643 | /* |
6c80b18d | 644 | * See if the firmware gave us a virtual-physical port mapping. |
3d396eb1 | 645 | */ |
6c80b18d MT |
646 | i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum))); |
647 | if (i != 0x55555555) | |
648 | physical_port[adapter->portnum] = i; | |
649 | ||
3176ff3e MT |
650 | netif_carrier_off(netdev); |
651 | netif_stop_queue(netdev); | |
652 | ||
6c80b18d MT |
653 | if ((err = register_netdev(netdev))) { |
654 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
655 | " aborting\n", netxen_nic_driver_name, | |
656 | adapter->portnum); | |
657 | err = -EIO; | |
658 | goto err_out_free_dev; | |
659 | } | |
660 | ||
661 | pci_set_drvdata(pdev, adapter); | |
3d396eb1 AK |
662 | |
663 | switch (adapter->ahw.board_type) { | |
3176ff3e MT |
664 | case NETXEN_NIC_GBE: |
665 | printk(KERN_INFO "%s: QUAD GbE board initialized\n", | |
666 | netxen_nic_driver_name); | |
667 | break; | |
3d396eb1 | 668 | |
3176ff3e MT |
669 | case NETXEN_NIC_XGBE: |
670 | printk(KERN_INFO "%s: XGbE board initialized\n", | |
671 | netxen_nic_driver_name); | |
672 | break; | |
3d396eb1 AK |
673 | } |
674 | ||
675 | adapter->driver_mismatch = 0; | |
676 | ||
677 | return 0; | |
678 | ||
6c80b18d MT |
679 | err_out_free_dev: |
680 | if (adapter->portnum == 0) | |
681 | netxen_free_adapter_offload(adapter); | |
ed25ffa1 | 682 | |
6c80b18d | 683 | err_out_free_rx_buffer: |
3d396eb1 AK |
684 | for (i = 0; i < MAX_RCV_CTX; ++i) { |
685 | recv_ctx = &adapter->recv_ctx[i]; | |
686 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
687 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
688 | if (rcv_desc->rx_buf_arr != NULL) { | |
689 | vfree(rcv_desc->rx_buf_arr); | |
690 | rcv_desc->rx_buf_arr = NULL; | |
691 | } | |
692 | } | |
693 | } | |
3d396eb1 AK |
694 | vfree(cmd_buf_arr); |
695 | ||
6c80b18d MT |
696 | err_out_free_adapter: |
697 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
698 | pci_disable_msi(pdev); | |
699 | ||
3d396eb1 | 700 | pci_set_drvdata(pdev, NULL); |
3d396eb1 | 701 | |
ed25ffa1 AK |
702 | if (db_ptr) |
703 | iounmap(db_ptr); | |
704 | ||
6c80b18d | 705 | err_out_iounmap: |
ed25ffa1 AK |
706 | if (mem_ptr0) |
707 | iounmap(mem_ptr0); | |
708 | if (mem_ptr1) | |
709 | iounmap(mem_ptr1); | |
710 | if (mem_ptr2) | |
711 | iounmap(mem_ptr2); | |
cb8011ad | 712 | |
6c80b18d MT |
713 | err_out_free_netdev: |
714 | free_netdev(netdev); | |
715 | ||
716 | err_out_free_res: | |
3d396eb1 | 717 | pci_release_regions(pdev); |
6c80b18d MT |
718 | |
719 | err_out_disable_pdev: | |
3d396eb1 AK |
720 | pci_disable_device(pdev); |
721 | return err; | |
722 | } | |
723 | ||
724 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
725 | { | |
726 | struct netxen_adapter *adapter; | |
3176ff3e | 727 | struct net_device *netdev; |
3d396eb1 AK |
728 | struct netxen_rx_buffer *buffer; |
729 | struct netxen_recv_context *recv_ctx; | |
730 | struct netxen_rcv_desc_ctx *rcv_desc; | |
96acb6eb DP |
731 | int i, ctxid, ring; |
732 | static int init_firmware_done = 0; | |
3d396eb1 | 733 | |
6c80b18d | 734 | adapter = pci_get_drvdata(pdev); |
3d396eb1 AK |
735 | if (adapter == NULL) |
736 | return; | |
737 | ||
6c80b18d MT |
738 | netdev = adapter->netdev; |
739 | ||
96acb6eb DP |
740 | unregister_netdev(netdev); |
741 | ||
3176ff3e MT |
742 | if (adapter->stop_port) |
743 | adapter->stop_port(adapter); | |
744 | ||
96acb6eb | 745 | netxen_nic_disable_int(adapter); |
6c80b18d | 746 | |
96acb6eb DP |
747 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
748 | init_firmware_done++; | |
3d396eb1 | 749 | netxen_free_hw_resources(adapter); |
96acb6eb | 750 | } |
3d396eb1 | 751 | |
3d396eb1 AK |
752 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { |
753 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
754 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
755 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
756 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
757 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
758 | if (buffer->state == NETXEN_BUFFER_FREE) | |
759 | continue; | |
760 | pci_unmap_single(pdev, buffer->dma, | |
761 | rcv_desc->dma_size, | |
762 | PCI_DMA_FROMDEVICE); | |
763 | if (buffer->skb != NULL) | |
764 | dev_kfree_skb_any(buffer->skb); | |
765 | } | |
766 | vfree(rcv_desc->rx_buf_arr); | |
767 | } | |
768 | } | |
769 | ||
6c80b18d MT |
770 | vfree(adapter->cmd_buf_arr); |
771 | ||
96acb6eb DP |
772 | if (adapter->portnum == 0) { |
773 | if (init_firmware_done) { | |
96acb6eb | 774 | i = 100; |
ceded32f | 775 | do { |
776 | if (dma_watchdog_shutdown_request(adapter) == 1) | |
777 | break; | |
96acb6eb | 778 | msleep(100); |
ceded32f | 779 | if (dma_watchdog_shutdown_poll_result(adapter) == 1) |
780 | break; | |
781 | } while (--i); | |
96acb6eb | 782 | |
ceded32f | 783 | if (i == 0) |
784 | printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n", | |
785 | netdev->name); | |
96acb6eb DP |
786 | |
787 | /* clear the register for future unloads/loads */ | |
788 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
789 | printk(KERN_INFO "State: 0x%0x\n", | |
790 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
791 | ||
792 | /* leave the hw in the same state as reboot */ | |
793 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); | |
ceded32f | 794 | netxen_pinit_from_rom(adapter, 0); |
96acb6eb | 795 | msleep(1); |
ceded32f | 796 | netxen_load_firmware(adapter); |
96acb6eb DP |
797 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); |
798 | } | |
799 | ||
800 | /* clear the register for future unloads/loads */ | |
801 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
802 | printk(KERN_INFO "State: 0x%0x\n", | |
803 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
804 | ||
96acb6eb | 805 | i = 100; |
ceded32f | 806 | do { |
807 | if (dma_watchdog_shutdown_request(adapter) == 1) | |
808 | break; | |
96acb6eb | 809 | msleep(100); |
ceded32f | 810 | if (dma_watchdog_shutdown_poll_result(adapter) == 1) |
811 | break; | |
812 | } while (--i); | |
96acb6eb DP |
813 | |
814 | if (i) { | |
815 | netxen_free_adapter_offload(adapter); | |
816 | } else { | |
ceded32f | 817 | printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n", |
818 | netdev->name); | |
96acb6eb | 819 | } |
96acb6eb DP |
820 | } |
821 | ||
3052246c | 822 | if (adapter->irq) |
823 | free_irq(adapter->irq, adapter); | |
824 | ||
825 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
826 | pci_disable_msi(pdev); | |
827 | ||
6c80b18d MT |
828 | iounmap(adapter->ahw.db_base); |
829 | iounmap(adapter->ahw.pci_base0); | |
830 | iounmap(adapter->ahw.pci_base1); | |
831 | iounmap(adapter->ahw.pci_base2); | |
595e3fb8 MT |
832 | |
833 | pci_release_regions(pdev); | |
3052246c | 834 | pci_disable_device(pdev); |
595e3fb8 MT |
835 | pci_set_drvdata(pdev, NULL); |
836 | ||
6c80b18d | 837 | free_netdev(netdev); |
3d396eb1 AK |
838 | } |
839 | ||
840 | /* | |
841 | * Called when a network interface is made active | |
842 | * @returns 0 on success, negative value on failure | |
843 | */ | |
844 | static int netxen_nic_open(struct net_device *netdev) | |
845 | { | |
3176ff3e | 846 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
847 | int err = 0; |
848 | int ctx, ring; | |
849 | ||
850 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
851 | err = netxen_init_firmware(adapter); | |
852 | if (err != 0) { | |
853 | printk(KERN_ERR "Failed to init firmware\n"); | |
854 | return -EIO; | |
855 | } | |
856 | netxen_nic_flash_print(adapter); | |
857 | ||
858 | /* setup all the resources for the Phantom... */ | |
859 | /* this include the descriptors for rcv, tx, and status */ | |
860 | netxen_nic_clear_stats(adapter); | |
861 | err = netxen_nic_hw_resources(adapter); | |
862 | if (err) { | |
863 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
864 | err); | |
865 | return err; | |
866 | } | |
3d396eb1 | 867 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 868 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 869 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 870 | } |
ed25ffa1 | 871 | adapter->irq = adapter->ahw.pdev->irq; |
6c80b18d | 872 | err = request_irq(adapter->ahw.pdev->irq, netxen_intr, |
1c8e039a | 873 | IRQF_SHARED|IRQF_SAMPLE_RANDOM, netdev->name, |
6c80b18d | 874 | adapter); |
3d396eb1 AK |
875 | if (err) { |
876 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 877 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
878 | return err; |
879 | } | |
ed25ffa1 AK |
880 | |
881 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
882 | } | |
3176ff3e MT |
883 | if (!adapter->driver_mismatch) |
884 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3d396eb1 | 885 | |
bea3348e SH |
886 | napi_enable(&adapter->napi); |
887 | ||
3176ff3e | 888 | netxen_nic_enable_int(adapter); |
3d396eb1 AK |
889 | |
890 | /* Done here again so that even if phantom sw overwrote it, | |
891 | * we set it */ | |
595e3fb8 MT |
892 | if (adapter->init_port |
893 | && adapter->init_port(adapter, adapter->portnum) != 0) { | |
6c80b18d | 894 | del_timer_sync(&adapter->watchdog_timer); |
595e3fb8 MT |
895 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
896 | netxen_nic_driver_name, adapter->portnum); | |
bea3348e | 897 | napi_disable(&adapter->napi); |
595e3fb8 MT |
898 | return -EIO; |
899 | } | |
7eec517c | 900 | if (adapter->macaddr_set) |
901 | adapter->macaddr_set(adapter, netdev->dev_addr); | |
595e3fb8 | 902 | |
3176ff3e | 903 | netxen_nic_set_link_parameters(adapter); |
3d396eb1 AK |
904 | |
905 | netxen_nic_set_multi(netdev); | |
ed25ffa1 | 906 | if (adapter->set_mtu) |
3176ff3e | 907 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 908 | |
3d396eb1 AK |
909 | if (!adapter->driver_mismatch) |
910 | netif_start_queue(netdev); | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | /* | |
916 | * netxen_nic_close - Disables a network interface entry point | |
917 | */ | |
918 | static int netxen_nic_close(struct net_device *netdev) | |
919 | { | |
3176ff3e | 920 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
921 | int i, j; |
922 | struct netxen_cmd_buffer *cmd_buff; | |
923 | struct netxen_skb_frag *buffrag; | |
924 | ||
925 | netif_carrier_off(netdev); | |
926 | netif_stop_queue(netdev); | |
bea3348e | 927 | napi_disable(&adapter->napi); |
3d396eb1 | 928 | |
e01872af | 929 | netxen_nic_disable_int(adapter); |
930 | ||
3176ff3e MT |
931 | cmd_buff = adapter->cmd_buf_arr; |
932 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
933 | buffrag = cmd_buff->frag_array; | |
934 | if (buffrag->dma) { | |
935 | pci_unmap_single(adapter->pdev, buffrag->dma, | |
936 | buffrag->length, PCI_DMA_TODEVICE); | |
96acb6eb | 937 | buffrag->dma = 0ULL; |
3176ff3e MT |
938 | } |
939 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
940 | buffrag++; | |
3d396eb1 | 941 | if (buffrag->dma) { |
3176ff3e MT |
942 | pci_unmap_page(adapter->pdev, buffrag->dma, |
943 | buffrag->length, | |
944 | PCI_DMA_TODEVICE); | |
96acb6eb | 945 | buffrag->dma = 0ULL; |
3d396eb1 | 946 | } |
3d396eb1 | 947 | } |
3176ff3e MT |
948 | /* Free the skb we received in netxen_nic_xmit_frame */ |
949 | if (cmd_buff->skb) { | |
950 | dev_kfree_skb_any(cmd_buff->skb); | |
951 | cmd_buff->skb = NULL; | |
952 | } | |
953 | cmd_buff++; | |
3d396eb1 | 954 | } |
96acb6eb DP |
955 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
956 | FLUSH_SCHEDULED_WORK(); | |
957 | del_timer_sync(&adapter->watchdog_timer); | |
958 | } | |
3d396eb1 AK |
959 | |
960 | return 0; | |
961 | } | |
962 | ||
963 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
964 | { | |
3176ff3e | 965 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
966 | struct netxen_hardware_context *hw = &adapter->ahw; |
967 | unsigned int first_seg_len = skb->len - skb->data_len; | |
968 | struct netxen_skb_frag *buffrag; | |
969 | unsigned int i; | |
970 | ||
971 | u32 producer = 0; | |
972 | u32 saved_producer = 0; | |
973 | struct cmd_desc_type0 *hwdesc; | |
974 | int k; | |
975 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 AK |
976 | static int dropped_packet = 0; |
977 | int frag_count; | |
978 | u32 local_producer = 0; | |
979 | u32 max_tx_desc_count = 0; | |
980 | u32 last_cmd_consumer = 0; | |
981 | int no_of_desc; | |
982 | ||
3176ff3e | 983 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
984 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
985 | ||
986 | if (unlikely(skb->len <= 0)) { | |
987 | dev_kfree_skb_any(skb); | |
3176ff3e | 988 | adapter->stats.badskblen++; |
3d396eb1 AK |
989 | return NETDEV_TX_OK; |
990 | } | |
991 | ||
992 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
993 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
994 | "too large, can handle only %d frags\n", | |
995 | netxen_nic_driver_name, netdev->name, | |
996 | frag_count, MAX_BUFFERS_PER_CMD); | |
3176ff3e | 997 | adapter->stats.txdropped++; |
3d396eb1 AK |
998 | if ((++dropped_packet & 0xff) == 0xff) |
999 | printk("%s: %s droppped packets = %d\n", | |
1000 | netxen_nic_driver_name, netdev->name, | |
1001 | dropped_packet); | |
1002 | ||
1003 | return NETDEV_TX_OK; | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * Everything is set up. Now, we just need to transmit it out. | |
1008 | * Note that we have to copy the contents of buffer over to | |
1009 | * right place. Later on, this can be optimized out by de-coupling the | |
1010 | * producer index from the buffer index. | |
1011 | */ | |
1012 | retry_getting_window: | |
1013 | spin_lock_bh(&adapter->tx_lock); | |
3176ff3e | 1014 | if (adapter->total_threads >= MAX_XMIT_PRODUCERS) { |
3d396eb1 AK |
1015 | spin_unlock_bh(&adapter->tx_lock); |
1016 | /* | |
1017 | * Yield CPU | |
1018 | */ | |
1019 | if (!in_atomic()) | |
1020 | schedule(); | |
1021 | else { | |
1022 | for (i = 0; i < 20; i++) | |
1023 | cpu_relax(); /*This a nop instr on i386 */ | |
1024 | } | |
1025 | goto retry_getting_window; | |
1026 | } | |
1027 | local_producer = adapter->cmd_producer; | |
1028 | /* There 4 fragments per descriptor */ | |
1029 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
1030 | if (netdev->features & NETIF_F_TSO) { |
1031 | if (skb_shinfo(skb)->gso_size > 0) { | |
1032 | ||
3d396eb1 | 1033 | no_of_desc++; |
ab6a5bb6 | 1034 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 1035 | sizeof(struct ethhdr)) > |
ed25ffa1 | 1036 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
1037 | no_of_desc++; |
1038 | } | |
3d396eb1 AK |
1039 | } |
1040 | } | |
1041 | k = adapter->cmd_producer; | |
1042 | max_tx_desc_count = adapter->max_tx_desc_count; | |
1043 | last_cmd_consumer = adapter->last_cmd_consumer; | |
1044 | if ((k + no_of_desc) >= | |
1045 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
1046 | last_cmd_consumer)) { | |
ed25ffa1 | 1047 | netif_stop_queue(netdev); |
3176ff3e | 1048 | adapter->flags |= NETXEN_NETDEV_STATUS; |
3d396eb1 | 1049 | spin_unlock_bh(&adapter->tx_lock); |
ed25ffa1 | 1050 | return NETDEV_TX_BUSY; |
3d396eb1 AK |
1051 | } |
1052 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
1053 | adapter->cmd_producer = k; | |
1054 | adapter->total_threads++; | |
1055 | adapter->num_threads++; | |
1056 | ||
1057 | spin_unlock_bh(&adapter->tx_lock); | |
1058 | /* Copy the descriptors into the hardware */ | |
1059 | producer = local_producer; | |
1060 | saved_producer = producer; | |
1061 | hwdesc = &hw->cmd_desc_head[producer]; | |
1062 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
1063 | /* Take skb->data itself */ | |
1064 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 1065 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 1066 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 1067 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
1068 | } else { |
1069 | pbuf->mss = 0; | |
1070 | hwdesc->mss = 0; | |
1071 | } | |
3d396eb1 AK |
1072 | pbuf->total_length = skb->len; |
1073 | pbuf->skb = skb; | |
1074 | pbuf->cmd = TX_ETHER_PKT; | |
1075 | pbuf->frag_count = frag_count; | |
3176ff3e | 1076 | pbuf->port = adapter->portnum; |
3d396eb1 | 1077 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 1078 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
1079 | PCI_DMA_TODEVICE); |
1080 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
1081 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
1082 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
1083 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 1084 | |
3176ff3e | 1085 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
6c80b18d | 1086 | netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum); |
3d396eb1 AK |
1087 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
1088 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
1089 | ||
1090 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
1091 | struct skb_frag_struct *frag; | |
1092 | int len, temp_len; | |
1093 | unsigned long offset; | |
1094 | dma_addr_t temp_dma; | |
1095 | ||
1096 | /* move to next desc. if there is a need */ | |
1097 | if ((i & 0x3) == 0) { | |
1098 | k = 0; | |
1099 | producer = get_next_index(producer, | |
1100 | adapter->max_tx_desc_count); | |
1101 | hwdesc = &hw->cmd_desc_head[producer]; | |
1102 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
1103 | } | |
1104 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
1105 | len = frag->size; | |
1106 | offset = frag->page_offset; | |
1107 | ||
1108 | temp_len = len; | |
3176ff3e | 1109 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
1110 | len, PCI_DMA_TODEVICE); |
1111 | ||
1112 | buffrag++; | |
1113 | buffrag->dma = temp_dma; | |
1114 | buffrag->length = temp_len; | |
1115 | ||
1116 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
1117 | switch (k) { | |
1118 | case 0: | |
1119 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
1120 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
1121 | break; | |
1122 | case 1: | |
1123 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
1124 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
1125 | break; | |
1126 | case 2: | |
1127 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
1128 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
1129 | break; | |
1130 | case 3: | |
a608ab9c | 1131 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
1132 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
1133 | break; | |
1134 | } | |
1135 | frag++; | |
1136 | } | |
1137 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
1138 | ||
1139 | /* might change opcode to TX_TCP_LSO */ | |
1140 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
1141 | ||
1142 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
1143 | * the descriptor ring | |
1144 | */ | |
ed25ffa1 AK |
1145 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
1146 | == TX_TCP_LSO) { | |
3d396eb1 AK |
1147 | int hdr_len, first_hdr_len, more_hdr; |
1148 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
1149 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
1150 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
1151 | more_hdr = 1; |
1152 | } else { | |
1153 | first_hdr_len = hdr_len; | |
1154 | more_hdr = 0; | |
1155 | } | |
1156 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
1157 | hwdesc = &hw->cmd_desc_head[producer]; | |
1158 | ||
1159 | /* copy the first 64 bytes */ | |
ed25ffa1 | 1160 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 AK |
1161 | (void *)(skb->data), first_hdr_len); |
1162 | producer = get_next_index(producer, max_tx_desc_count); | |
1163 | ||
1164 | if (more_hdr) { | |
1165 | hwdesc = &hw->cmd_desc_head[producer]; | |
1166 | /* copy the next 64 bytes - should be enough except | |
1167 | * for pathological case | |
1168 | */ | |
d626f62b ACM |
1169 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
1170 | hwdesc, | |
1171 | (hdr_len - | |
1172 | first_hdr_len)); | |
3d396eb1 AK |
1173 | producer = get_next_index(producer, max_tx_desc_count); |
1174 | } | |
1175 | } | |
6c80b18d MT |
1176 | |
1177 | i = netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]); | |
1178 | ||
1179 | hw->cmd_desc_head[saved_producer].flags_opcode = | |
1180 | cpu_to_le16(hw->cmd_desc_head[saved_producer].flags_opcode); | |
1181 | hw->cmd_desc_head[saved_producer].num_of_buffers_total_length = | |
1182 | cpu_to_le32(hw->cmd_desc_head[saved_producer]. | |
1183 | num_of_buffers_total_length); | |
1184 | ||
3d396eb1 | 1185 | spin_lock_bh(&adapter->tx_lock); |
6c80b18d MT |
1186 | adapter->stats.txbytes += i; |
1187 | ||
3d396eb1 AK |
1188 | /* Code to update the adapter considering how many producer threads |
1189 | are currently working */ | |
1190 | if ((--adapter->num_threads) == 0) { | |
1191 | /* This is the last thread */ | |
1192 | u32 crb_producer = adapter->cmd_producer; | |
3176ff3e | 1193 | netxen_nic_update_cmd_producer(adapter, crb_producer); |
3d396eb1 AK |
1194 | wmb(); |
1195 | adapter->total_threads = 0; | |
3d396eb1 AK |
1196 | } |
1197 | ||
3176ff3e | 1198 | adapter->stats.xmitfinished++; |
3d396eb1 AK |
1199 | spin_unlock_bh(&adapter->tx_lock); |
1200 | ||
1201 | netdev->trans_start = jiffies; | |
1202 | ||
1203 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
1204 | ||
1205 | DPRINTK(INFO, "Done. Send\n"); | |
1206 | return NETDEV_TX_OK; | |
1207 | } | |
1208 | ||
1209 | static void netxen_watchdog(unsigned long v) | |
1210 | { | |
1211 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
1212 | |
1213 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
1214 | } |
1215 | ||
1216 | static void netxen_tx_timeout(struct net_device *netdev) | |
1217 | { | |
3176ff3e MT |
1218 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1219 | netdev_priv(netdev); | |
1220 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1221 | } |
1222 | ||
6d5aefb8 | 1223 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1224 | { |
3176ff3e MT |
1225 | struct netxen_adapter *adapter = |
1226 | container_of(work, struct netxen_adapter, tx_timeout_task); | |
3d396eb1 AK |
1227 | |
1228 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
6c80b18d | 1229 | netxen_nic_driver_name, adapter->netdev->name); |
3d396eb1 | 1230 | |
6c80b18d MT |
1231 | netxen_nic_close(adapter->netdev); |
1232 | netxen_nic_open(adapter->netdev); | |
6c80b18d MT |
1233 | adapter->netdev->trans_start = jiffies; |
1234 | netif_wake_queue(adapter->netdev); | |
3d396eb1 AK |
1235 | } |
1236 | ||
1237 | static int | |
1238 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
1239 | { | |
1240 | u32 ret = 0; | |
1241 | ||
1242 | DPRINTK(INFO, "Entered handle ISR\n"); | |
595e3fb8 | 1243 | adapter->stats.ints++; |
3d396eb1 | 1244 | |
2d1a3bbd | 1245 | netxen_nic_disable_int(adapter); |
1246 | ||
3d396eb1 | 1247 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { |
bea3348e | 1248 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
3d396eb1 AK |
1249 | /* |
1250 | * Interrupts are already disabled. | |
1251 | */ | |
bea3348e | 1252 | __netif_rx_schedule(netdev, &adapter->napi); |
3d396eb1 AK |
1253 | } else { |
1254 | static unsigned int intcount = 0; | |
1255 | if ((++intcount & 0xfff) == 0xfff) | |
2d1a3bbd | 1256 | DPRINTK(KERN_ERR |
3d396eb1 AK |
1257 | "%s: %s interrupt %d while in poll\n", |
1258 | netxen_nic_driver_name, netdev->name, | |
1259 | intcount); | |
1260 | } | |
1261 | ret = 1; | |
1262 | } | |
1263 | ||
1264 | if (ret == 0) { | |
1265 | netxen_nic_enable_int(adapter); | |
1266 | } | |
1267 | ||
1268 | return ret; | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * netxen_intr - Interrupt Handler | |
1273 | * @irq: interrupt number | |
1274 | * data points to adapter stucture (which may be handling more than 1 port | |
1275 | */ | |
1494a814 | 1276 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1277 | { |
1278 | struct netxen_adapter *adapter; | |
3d396eb1 | 1279 | struct net_device *netdev; |
e01872af | 1280 | u32 our_int = 0; |
3d396eb1 AK |
1281 | |
1282 | if (unlikely(!irq)) { | |
1283 | return IRQ_NONE; /* Not our interrupt */ | |
1284 | } | |
1285 | ||
1286 | adapter = (struct netxen_adapter *)data; | |
3176ff3e | 1287 | netdev = adapter->netdev; |
e01872af | 1288 | |
1289 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
1290 | our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
1291 | /* not our interrupt */ | |
1292 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
1293 | return IRQ_NONE; | |
1294 | } | |
1295 | ||
1296 | if (adapter->intr_scheme == INTR_SCHEME_PERPORT) { | |
1297 | /* claim interrupt */ | |
1298 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
1299 | writel(our_int & ~((u32)(0x80 << adapter->portnum)), | |
1300 | NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
1301 | } | |
1302 | } | |
1303 | ||
3176ff3e MT |
1304 | if (netif_running(netdev)) |
1305 | netxen_handle_int(adapter, netdev); | |
3d396eb1 AK |
1306 | |
1307 | return IRQ_HANDLED; | |
1308 | } | |
1309 | ||
bea3348e | 1310 | static int netxen_nic_poll(struct napi_struct *napi, int budget) |
3d396eb1 | 1311 | { |
bea3348e SH |
1312 | struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi); |
1313 | struct net_device *netdev = adapter->netdev; | |
3d396eb1 AK |
1314 | int done = 1; |
1315 | int ctx; | |
bea3348e | 1316 | int work_done; |
3d396eb1 AK |
1317 | |
1318 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
3d396eb1 | 1319 | |
80922fbc | 1320 | work_done = 0; |
3d396eb1 AK |
1321 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1322 | /* | |
1323 | * Fairness issue. This will give undue weight to the | |
1324 | * receive context 0. | |
1325 | */ | |
1326 | ||
1327 | /* | |
1328 | * To avoid starvation, we give each of our receivers, | |
1329 | * a fraction of the quota. Sometimes, it might happen that we | |
1330 | * have enough quota to process every packet, but since all the | |
1331 | * packets are on one context, it gets only half of the quota, | |
1332 | * and ends up not processing it. | |
1333 | */ | |
bea3348e SH |
1334 | work_done += netxen_process_rcv_ring(adapter, ctx, |
1335 | budget / MAX_RCV_CTX); | |
3d396eb1 AK |
1336 | } |
1337 | ||
bea3348e | 1338 | if (work_done >= budget && netxen_nic_rx_has_work(adapter) != 0) |
3d396eb1 AK |
1339 | done = 0; |
1340 | ||
ed25ffa1 AK |
1341 | if (netxen_process_cmd_ring((unsigned long)adapter) == 0) |
1342 | done = 0; | |
3d396eb1 AK |
1343 | |
1344 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
80922fbc | 1345 | work_done, work_to_do); |
3d396eb1 | 1346 | if (done) { |
bea3348e | 1347 | netif_rx_complete(netdev, napi); |
3d396eb1 AK |
1348 | netxen_nic_enable_int(adapter); |
1349 | } | |
1350 | ||
bea3348e | 1351 | return work_done; |
3d396eb1 AK |
1352 | } |
1353 | ||
1354 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1355 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1356 | { | |
3176ff3e | 1357 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1358 | disable_irq(adapter->irq); |
1494a814 | 1359 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1360 | enable_irq(adapter->irq); |
1361 | } | |
1362 | #endif | |
3d396eb1 AK |
1363 | |
1364 | static struct pci_driver netxen_driver = { | |
1365 | .name = netxen_nic_driver_name, | |
1366 | .id_table = netxen_pci_tbl, | |
1367 | .probe = netxen_nic_probe, | |
1368 | .remove = __devexit_p(netxen_nic_remove) | |
1369 | }; | |
1370 | ||
1371 | /* Driver Registration on NetXen card */ | |
1372 | ||
1373 | static int __init netxen_init_module(void) | |
1374 | { | |
ed25ffa1 AK |
1375 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) |
1376 | return -ENOMEM; | |
1377 | ||
184231bd | 1378 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1379 | } |
1380 | ||
1381 | module_init(netxen_init_module); | |
1382 | ||
1383 | static void __exit netxen_exit_module(void) | |
1384 | { | |
1385 | /* | |
1386 | * Wait for some time to allow the dma to drain, if any. | |
1387 | */ | |
96acb6eb | 1388 | msleep(100); |
3d396eb1 | 1389 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1390 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1391 | } |
1392 | ||
1393 | module_exit(netxen_exit_module); |