Commit | Line | Data |
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3d396eb1 AK |
1 | /* |
2 | * Copyright (C) 2003 - 2006 NetXen, Inc. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | * MA 02111-1307, USA. | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution | |
21 | * in the file called LICENSE. | |
22 | * | |
23 | * Contact Information: | |
24 | * info@netxen.com | |
25 | * NetXen, | |
26 | * 3965 Freedom Circle, Fourth floor, | |
27 | * Santa Clara, CA 95054 | |
28 | * | |
29 | * | |
30 | * Main source file for NetXen NIC Driver on Linux | |
31 | * | |
32 | */ | |
33 | ||
cb8011ad | 34 | #include <linux/vmalloc.h> |
3d396eb1 AK |
35 | #include "netxen_nic_hw.h" |
36 | ||
37 | #include "netxen_nic.h" | |
38 | #define DEFINE_GLOBAL_RECV_CRB | |
39 | #include "netxen_nic_phan_reg.h" | |
40 | #include "netxen_nic_ioctl.h" | |
41 | ||
1494a814 JG |
42 | #include <linux/dma-mapping.h> |
43 | #include <linux/vmalloc.h> | |
44 | ||
cb8011ad AK |
45 | #define PHAN_VENDOR_ID 0x4040 |
46 | ||
3d396eb1 AK |
47 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
48 | MODULE_LICENSE("GPL"); | |
49 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
50 | ||
51 | char netxen_nic_driver_name[] = "netxen"; | |
52 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " | |
cb8011ad | 53 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 AK |
54 | |
55 | #define NETXEN_NETDEV_WEIGHT 120 | |
56 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 57 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 AK |
58 | |
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); | |
67 | static void netxen_tx_timeout_task(struct net_device *netdev); | |
68 | static void netxen_watchdog(unsigned long); | |
69 | static int netxen_handle_int(struct netxen_adapter *, struct net_device *); | |
70 | static int netxen_nic_ioctl(struct net_device *netdev, | |
71 | struct ifreq *ifr, int cmd); | |
72 | static int netxen_nic_poll(struct net_device *dev, int *budget); | |
73 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
74 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
75 | #endif | |
1494a814 | 76 | static irqreturn_t netxen_intr(int irq, void *data); |
3d396eb1 AK |
77 | |
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)}, | |
85 | {0,} | |
86 | }; | |
87 | ||
88 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
89 | ||
90 | /* | |
91 | * netxen_nic_probe() | |
92 | * | |
93 | * The Linux system will invoke this after identifying the vendor ID and | |
94 | * device Id in the pci_tbl supported by this module. | |
95 | * | |
96 | * A quad port card has one operational PCI config space, (function 0), | |
97 | * which is used to access all four ports. | |
98 | * | |
99 | * This routine will initialize the adapter, and setup the global parameters | |
100 | * along with the port's specific structure. | |
101 | */ | |
102 | static int __devinit | |
103 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
104 | { | |
105 | struct net_device *netdev = NULL; | |
106 | struct netxen_adapter *adapter = NULL; | |
107 | struct netxen_port *port = NULL; | |
cb8011ad AK |
108 | u8 *mem_ptr0 = NULL; |
109 | u8 *mem_ptr1 = NULL; | |
110 | u8 *mem_ptr2 = NULL; | |
111 | ||
3d396eb1 AK |
112 | unsigned long mem_base, mem_len; |
113 | int pci_using_dac, i, err; | |
114 | int ring; | |
115 | struct netxen_recv_context *recv_ctx = NULL; | |
116 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
117 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
118 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
119 | int valid_mac; | |
120 | ||
cb8011ad | 121 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
3d396eb1 AK |
122 | if ((err = pci_enable_device(pdev))) |
123 | return err; | |
124 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
125 | err = -ENODEV; | |
126 | goto err_out_disable_pdev; | |
127 | } | |
128 | ||
129 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
130 | goto err_out_disable_pdev; | |
131 | ||
132 | pci_set_master(pdev); | |
133 | if ((pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) && | |
134 | (pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) == 0)) | |
135 | pci_using_dac = 1; | |
136 | else { | |
137 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || | |
138 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
139 | goto err_out_free_res; | |
140 | ||
141 | pci_using_dac = 0; | |
142 | } | |
143 | ||
144 | /* remap phys address */ | |
145 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
146 | mem_len = pci_resource_len(pdev, 0); | |
147 | ||
148 | /* 128 Meg of memory */ | |
cb8011ad AK |
149 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); |
150 | mem_ptr1 = | |
151 | ioremap(mem_base + SECOND_PAGE_GROUP_START, SECOND_PAGE_GROUP_SIZE); | |
152 | mem_ptr2 = | |
153 | ioremap(mem_base + THIRD_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
154 | ||
155 | if ((mem_ptr0 == 0UL) || (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
156 | DPRINTK(1, ERR, | |
157 | "Cannot remap adapter memory aborting.:" | |
158 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
159 | mem_ptr0, mem_ptr1, mem_ptr2); | |
160 | ||
3d396eb1 | 161 | err = -EIO; |
cb8011ad AK |
162 | if (mem_ptr0) |
163 | iounmap(mem_ptr0); | |
164 | if (mem_ptr1) | |
165 | iounmap(mem_ptr1); | |
166 | if (mem_ptr2) | |
167 | iounmap(mem_ptr2); | |
168 | ||
3d396eb1 AK |
169 | goto err_out_free_res; |
170 | } | |
171 | ||
172 | /* | |
173 | * Allocate a adapter structure which will manage all the initialization | |
174 | * as well as the common resources for all ports... | |
175 | * all the ports will have pointer to this adapter as well as Adapter | |
176 | * will have pointers of all the ports structures. | |
177 | */ | |
178 | ||
179 | /* One adapter structure for all 4 ports.... */ | |
180 | adapter = kzalloc(sizeof(struct netxen_adapter), GFP_KERNEL); | |
181 | if (adapter == NULL) { | |
182 | printk(KERN_ERR "%s: Could not allocate adapter memory:%d\n", | |
183 | netxen_nic_driver_name, | |
184 | (int)sizeof(struct netxen_adapter)); | |
185 | err = -ENOMEM; | |
186 | goto err_out_iounmap; | |
187 | } | |
188 | ||
189 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS; | |
190 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
191 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
192 | ||
193 | pci_set_drvdata(pdev, adapter); | |
194 | ||
195 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); | |
196 | if (cmd_buf_arr == NULL) { | |
197 | err = -ENOMEM; | |
198 | goto err_out_free_adapter; | |
199 | } | |
200 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
201 | ||
202 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
203 | recv_ctx = &adapter->recv_ctx[i]; | |
204 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
205 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
206 | switch (RCV_DESC_TYPE(ring)) { | |
207 | case RCV_DESC_NORMAL: | |
208 | rcv_desc->max_rx_desc_count = | |
209 | adapter->max_rx_desc_count; | |
210 | rcv_desc->flags = RCV_DESC_NORMAL; | |
211 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
212 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
213 | break; | |
214 | ||
215 | case RCV_DESC_JUMBO: | |
216 | rcv_desc->max_rx_desc_count = | |
217 | adapter->max_jumbo_rx_desc_count; | |
218 | rcv_desc->flags = RCV_DESC_JUMBO; | |
219 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
220 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
221 | break; | |
222 | ||
223 | } | |
224 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
225 | vmalloc(RCV_BUFFSIZE); | |
226 | ||
227 | if (rcv_desc->rx_buf_arr == NULL) { | |
228 | err = -ENOMEM; | |
229 | goto err_out_free_rx_buffer; | |
230 | } | |
231 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
232 | } | |
233 | ||
234 | } | |
235 | ||
236 | adapter->ops = kzalloc(sizeof(struct netxen_drvops), GFP_KERNEL); | |
237 | if (adapter->ops == NULL) { | |
238 | printk(KERN_ERR | |
239 | "%s: Could not allocate memory for adapter->ops:%d\n", | |
240 | netxen_nic_driver_name, | |
241 | (int)sizeof(struct netxen_adapter)); | |
242 | err = -ENOMEM; | |
243 | goto err_out_free_rx_buffer; | |
244 | } | |
245 | ||
246 | adapter->cmd_buf_arr = cmd_buf_arr; | |
cb8011ad AK |
247 | adapter->ahw.pci_base0 = mem_ptr0; |
248 | adapter->ahw.pci_base1 = mem_ptr1; | |
249 | adapter->ahw.pci_base2 = mem_ptr2; | |
3d396eb1 AK |
250 | spin_lock_init(&adapter->tx_lock); |
251 | spin_lock_init(&adapter->lock); | |
cb8011ad AK |
252 | #ifdef CONFIG_IA64 |
253 | netxen_pinit_from_rom(adapter, 0); | |
254 | udelay(500); | |
255 | netxen_load_firmware(adapter); | |
256 | #endif | |
257 | ||
3d396eb1 AK |
258 | /* initialize the buffers in adapter */ |
259 | netxen_initialize_adapter_sw(adapter); | |
260 | /* | |
261 | * Set the CRB window to invalid. If any register in window 0 is | |
262 | * accessed it should set the window to 0 and then reset it to 1. | |
263 | */ | |
264 | adapter->curr_window = 255; | |
265 | /* | |
266 | * Adapter in our case is quad port so initialize it before | |
267 | * initializing the ports | |
268 | */ | |
269 | netxen_initialize_adapter_hw(adapter); /* initialize the adapter */ | |
270 | ||
271 | netxen_initialize_adapter_ops(adapter); | |
272 | ||
273 | init_timer(&adapter->watchdog_timer); | |
274 | adapter->ahw.xg_linkup = 0; | |
275 | adapter->watchdog_timer.function = &netxen_watchdog; | |
276 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
277 | INIT_WORK(&adapter->watchdog_task, | |
278 | (void (*)(void *))netxen_watchdog_task, adapter); | |
279 | adapter->ahw.pdev = pdev; | |
280 | adapter->proc_cmd_buf_counter = 0; | |
281 | pci_read_config_byte(pdev, PCI_REVISION_ID, &adapter->ahw.revision_id); | |
282 | ||
283 | if (pci_enable_msi(pdev)) { | |
284 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; | |
285 | printk(KERN_WARNING "%s: unable to allocate MSI interrupt" | |
286 | " error\n", netxen_nic_driver_name); | |
287 | } else | |
288 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; | |
289 | ||
290 | if (netxen_is_flash_supported(adapter) == 0 && | |
291 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
292 | valid_mac = 1; | |
293 | else | |
294 | valid_mac = 0; | |
295 | ||
cb8011ad AK |
296 | /* |
297 | * Initialize all the CRB registers here. | |
298 | */ | |
299 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET)); | |
300 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_CONSUMER_OFFSET)); | |
301 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); | |
302 | ||
303 | /* Unlock the HW, prompting the boot sequence */ | |
304 | writel(1, | |
305 | NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
306 | ||
307 | /* Handshake with the card before we register the devices. */ | |
308 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
309 | ||
3d396eb1 AK |
310 | /* initialize the all the ports */ |
311 | ||
312 | for (i = 0; i < adapter->ahw.max_ports; i++) { | |
313 | netdev = alloc_etherdev(sizeof(struct netxen_port)); | |
314 | if (!netdev) { | |
315 | printk(KERN_ERR "%s: could not allocate netdev for port" | |
316 | " %d\n", netxen_nic_driver_name, i + 1); | |
317 | goto err_out_free_dev; | |
318 | } | |
319 | ||
320 | SET_MODULE_OWNER(netdev); | |
edf90163 | 321 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3d396eb1 AK |
322 | |
323 | port = netdev_priv(netdev); | |
324 | port->netdev = netdev; | |
325 | port->pdev = pdev; | |
326 | port->adapter = adapter; | |
327 | port->portnum = i; /* Gigabit port number from 0-3 */ | |
328 | ||
329 | netdev->open = netxen_nic_open; | |
330 | netdev->stop = netxen_nic_close; | |
331 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
332 | netdev->get_stats = netxen_nic_get_stats; | |
333 | netdev->set_multicast_list = netxen_nic_set_multi; | |
334 | netdev->set_mac_address = netxen_nic_set_mac; | |
335 | netdev->change_mtu = netxen_nic_change_mtu; | |
336 | netdev->do_ioctl = netxen_nic_ioctl; | |
337 | netdev->tx_timeout = netxen_tx_timeout; | |
338 | netdev->watchdog_timeo = HZ; | |
339 | ||
340 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
341 | netdev->poll = netxen_nic_poll; | |
342 | netdev->weight = NETXEN_NETDEV_WEIGHT; | |
343 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
344 | netdev->poll_controller = netxen_nic_poll_controller; | |
345 | #endif | |
346 | /* ScatterGather support */ | |
347 | netdev->features = NETIF_F_SG; | |
348 | netdev->features |= NETIF_F_IP_CSUM; | |
349 | netdev->features |= NETIF_F_TSO; | |
350 | ||
351 | if (pci_using_dac) | |
352 | netdev->features |= NETIF_F_HIGHDMA; | |
353 | ||
354 | if (valid_mac) { | |
355 | unsigned char *p = (unsigned char *)&mac_addr[i]; | |
356 | netdev->dev_addr[0] = *(p + 5); | |
357 | netdev->dev_addr[1] = *(p + 4); | |
358 | netdev->dev_addr[2] = *(p + 3); | |
359 | netdev->dev_addr[3] = *(p + 2); | |
360 | netdev->dev_addr[4] = *(p + 1); | |
361 | netdev->dev_addr[5] = *(p + 0); | |
362 | ||
363 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
364 | netdev->addr_len); | |
365 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
366 | printk(KERN_ERR "%s: Bad MAC address " | |
367 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
368 | netxen_nic_driver_name, | |
369 | netdev->dev_addr[0], | |
370 | netdev->dev_addr[1], | |
371 | netdev->dev_addr[2], | |
372 | netdev->dev_addr[3], | |
373 | netdev->dev_addr[4], | |
374 | netdev->dev_addr[5]); | |
375 | } else { | |
376 | if (adapter->ops->macaddr_set) | |
377 | adapter->ops->macaddr_set(port, | |
378 | netdev-> | |
379 | dev_addr); | |
380 | } | |
381 | } | |
382 | INIT_WORK(&adapter->tx_timeout_task, | |
383 | (void (*)(void *))netxen_tx_timeout_task, netdev); | |
384 | netif_carrier_off(netdev); | |
385 | netif_stop_queue(netdev); | |
386 | ||
387 | if ((err = register_netdev(netdev))) { | |
388 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
389 | " aborting\n", netxen_nic_driver_name, i + 1); | |
390 | err = -EIO; | |
391 | free_netdev(netdev); | |
392 | goto err_out_free_dev; | |
393 | } | |
394 | adapter->port_count++; | |
395 | adapter->active_ports = 0; | |
396 | adapter->port[i] = port; | |
397 | } | |
398 | ||
3d396eb1 AK |
399 | /* |
400 | * delay a while to ensure that the Pegs are up & running. | |
401 | * Otherwise, we might see some flaky behaviour. | |
402 | */ | |
403 | udelay(100); | |
404 | ||
405 | switch (adapter->ahw.board_type) { | |
406 | case NETXEN_NIC_GBE: | |
407 | printk("%s: QUAD GbE board initialized\n", | |
408 | netxen_nic_driver_name); | |
409 | break; | |
410 | ||
411 | case NETXEN_NIC_XGBE: | |
412 | printk("%s: XGbE board initialized\n", netxen_nic_driver_name); | |
413 | break; | |
414 | } | |
415 | ||
416 | adapter->driver_mismatch = 0; | |
417 | ||
418 | return 0; | |
419 | ||
420 | err_out_free_dev: | |
421 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
422 | pci_disable_msi(pdev); | |
423 | for (i = 0; i < adapter->port_count; i++) { | |
424 | port = adapter->port[i]; | |
425 | if ((port) && (port->netdev)) { | |
426 | unregister_netdev(port->netdev); | |
427 | free_netdev(port->netdev); | |
428 | } | |
429 | } | |
430 | kfree(adapter->ops); | |
431 | ||
432 | err_out_free_rx_buffer: | |
433 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
434 | recv_ctx = &adapter->recv_ctx[i]; | |
435 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
436 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
437 | if (rcv_desc->rx_buf_arr != NULL) { | |
438 | vfree(rcv_desc->rx_buf_arr); | |
439 | rcv_desc->rx_buf_arr = NULL; | |
440 | } | |
441 | } | |
442 | } | |
443 | ||
444 | vfree(cmd_buf_arr); | |
445 | ||
446 | kfree(adapter->port); | |
447 | ||
448 | err_out_free_adapter: | |
449 | pci_set_drvdata(pdev, NULL); | |
450 | kfree(adapter); | |
451 | ||
452 | err_out_iounmap: | |
cb8011ad AK |
453 | iounmap(mem_ptr0); |
454 | iounmap(mem_ptr1); | |
455 | iounmap(mem_ptr2); | |
456 | ||
3d396eb1 AK |
457 | err_out_free_res: |
458 | pci_release_regions(pdev); | |
459 | err_out_disable_pdev: | |
460 | pci_disable_device(pdev); | |
461 | return err; | |
462 | } | |
463 | ||
464 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
465 | { | |
466 | struct netxen_adapter *adapter; | |
467 | struct netxen_port *port; | |
468 | struct netxen_rx_buffer *buffer; | |
469 | struct netxen_recv_context *recv_ctx; | |
470 | struct netxen_rcv_desc_ctx *rcv_desc; | |
471 | int i; | |
472 | int ctxid, ring; | |
473 | ||
474 | adapter = pci_get_drvdata(pdev); | |
475 | if (adapter == NULL) | |
476 | return; | |
477 | ||
478 | netxen_nic_stop_all_ports(adapter); | |
479 | /* leave the hw in the same state as reboot */ | |
480 | netxen_pinit_from_rom(adapter, 0); | |
481 | udelay(500); | |
482 | netxen_load_firmware(adapter); | |
483 | ||
484 | if ((adapter->flags & NETXEN_NIC_MSI_ENABLED)) | |
485 | netxen_nic_disable_int(adapter); | |
486 | ||
487 | udelay(500); /* Delay for a while to drain the DMA engines */ | |
488 | for (i = 0; i < adapter->port_count; i++) { | |
489 | port = adapter->port[i]; | |
490 | if ((port) && (port->netdev)) { | |
491 | unregister_netdev(port->netdev); | |
492 | free_netdev(port->netdev); | |
493 | } | |
494 | } | |
495 | ||
496 | if ((adapter->flags & NETXEN_NIC_MSI_ENABLED)) | |
497 | pci_disable_msi(pdev); | |
498 | pci_set_drvdata(pdev, NULL); | |
499 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) | |
500 | netxen_free_hw_resources(adapter); | |
501 | ||
cb8011ad AK |
502 | iounmap(adapter->ahw.pci_base0); |
503 | iounmap(adapter->ahw.pci_base1); | |
504 | iounmap(adapter->ahw.pci_base2); | |
3d396eb1 AK |
505 | |
506 | pci_release_regions(pdev); | |
507 | pci_disable_device(pdev); | |
508 | ||
509 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { | |
510 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
511 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
512 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
513 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
514 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
515 | if (buffer->state == NETXEN_BUFFER_FREE) | |
516 | continue; | |
517 | pci_unmap_single(pdev, buffer->dma, | |
518 | rcv_desc->dma_size, | |
519 | PCI_DMA_FROMDEVICE); | |
520 | if (buffer->skb != NULL) | |
521 | dev_kfree_skb_any(buffer->skb); | |
522 | } | |
523 | vfree(rcv_desc->rx_buf_arr); | |
524 | } | |
525 | } | |
526 | ||
527 | vfree(adapter->cmd_buf_arr); | |
528 | kfree(adapter->ops); | |
529 | kfree(adapter); | |
530 | } | |
531 | ||
532 | /* | |
533 | * Called when a network interface is made active | |
534 | * @returns 0 on success, negative value on failure | |
535 | */ | |
536 | static int netxen_nic_open(struct net_device *netdev) | |
537 | { | |
538 | struct netxen_port *port = netdev_priv(netdev); | |
539 | struct netxen_adapter *adapter = port->adapter; | |
3d396eb1 AK |
540 | int err = 0; |
541 | int ctx, ring; | |
542 | ||
543 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
544 | err = netxen_init_firmware(adapter); | |
545 | if (err != 0) { | |
546 | printk(KERN_ERR "Failed to init firmware\n"); | |
547 | return -EIO; | |
548 | } | |
549 | netxen_nic_flash_print(adapter); | |
550 | ||
551 | /* setup all the resources for the Phantom... */ | |
552 | /* this include the descriptors for rcv, tx, and status */ | |
553 | netxen_nic_clear_stats(adapter); | |
554 | err = netxen_nic_hw_resources(adapter); | |
555 | if (err) { | |
556 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
557 | err); | |
558 | return err; | |
559 | } | |
560 | if (adapter->ops->init_port | |
561 | && adapter->ops->init_port(adapter, port->portnum) != 0) { | |
562 | printk(KERN_ERR "%s: Failed to initialize port %d\n", | |
563 | netxen_nic_driver_name, port->portnum); | |
564 | netxen_free_hw_resources(adapter); | |
565 | return -EIO; | |
566 | } | |
567 | if (adapter->ops->init_niu) | |
568 | adapter->ops->init_niu(adapter); | |
569 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { | |
cb8011ad | 570 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 571 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 AK |
572 | } |
573 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
574 | } | |
575 | adapter->active_ports++; | |
576 | if (adapter->active_ports == 1) { | |
577 | err = request_irq(adapter->ahw.pdev->irq, &netxen_intr, | |
578 | SA_SHIRQ | SA_SAMPLE_RANDOM, netdev->name, | |
579 | adapter); | |
580 | if (err) { | |
581 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
582 | adapter->active_ports--; | |
583 | return err; | |
584 | } | |
585 | adapter->irq = adapter->ahw.pdev->irq; | |
586 | if (!adapter->driver_mismatch) | |
587 | mod_timer(&adapter->watchdog_timer, jiffies); | |
588 | ||
589 | netxen_nic_enable_int(adapter); | |
590 | } | |
591 | ||
592 | /* Done here again so that even if phantom sw overwrote it, | |
593 | * we set it */ | |
594 | if (adapter->ops->macaddr_set) | |
595 | adapter->ops->macaddr_set(port, netdev->dev_addr); | |
596 | netxen_nic_set_link_parameters(port); | |
597 | ||
598 | netxen_nic_set_multi(netdev); | |
599 | if (!adapter->driver_mismatch) | |
600 | netif_start_queue(netdev); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | /* | |
606 | * netxen_nic_close - Disables a network interface entry point | |
607 | */ | |
608 | static int netxen_nic_close(struct net_device *netdev) | |
609 | { | |
610 | struct netxen_port *port = netdev_priv(netdev); | |
611 | struct netxen_adapter *adapter = port->adapter; | |
612 | int i, j; | |
613 | struct netxen_cmd_buffer *cmd_buff; | |
614 | struct netxen_skb_frag *buffrag; | |
615 | ||
616 | netif_carrier_off(netdev); | |
617 | netif_stop_queue(netdev); | |
618 | ||
3d396eb1 AK |
619 | adapter->active_ports--; |
620 | ||
621 | if (!adapter->active_ports) { | |
622 | netxen_nic_disable_int(adapter); | |
623 | if (adapter->irq) | |
624 | free_irq(adapter->irq, adapter); | |
625 | cmd_buff = adapter->cmd_buf_arr; | |
626 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
627 | buffrag = cmd_buff->frag_array; | |
628 | if (buffrag->dma) { | |
629 | pci_unmap_single(port->pdev, buffrag->dma, | |
630 | buffrag->length, | |
631 | PCI_DMA_TODEVICE); | |
632 | buffrag->dma = (u64) NULL; | |
633 | } | |
634 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
635 | buffrag++; | |
636 | if (buffrag->dma) { | |
637 | pci_unmap_page(port->pdev, | |
638 | buffrag->dma, | |
639 | buffrag->length, | |
640 | PCI_DMA_TODEVICE); | |
641 | buffrag->dma = (u64) NULL; | |
642 | } | |
643 | } | |
644 | /* Free the skb we received in netxen_nic_xmit_frame */ | |
645 | if (cmd_buff->skb) { | |
646 | dev_kfree_skb_any(cmd_buff->skb); | |
647 | cmd_buff->skb = NULL; | |
648 | } | |
649 | cmd_buff++; | |
650 | } | |
651 | del_timer_sync(&adapter->watchdog_timer); | |
652 | } | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
658 | { | |
659 | struct netxen_port *port = netdev_priv(netdev); | |
660 | struct netxen_adapter *adapter = port->adapter; | |
661 | struct netxen_hardware_context *hw = &adapter->ahw; | |
662 | unsigned int first_seg_len = skb->len - skb->data_len; | |
663 | struct netxen_skb_frag *buffrag; | |
664 | unsigned int i; | |
665 | ||
666 | u32 producer = 0; | |
667 | u32 saved_producer = 0; | |
668 | struct cmd_desc_type0 *hwdesc; | |
669 | int k; | |
670 | struct netxen_cmd_buffer *pbuf = NULL; | |
671 | unsigned int tries = 0; | |
672 | static int dropped_packet = 0; | |
673 | int frag_count; | |
674 | u32 local_producer = 0; | |
675 | u32 max_tx_desc_count = 0; | |
676 | u32 last_cmd_consumer = 0; | |
677 | int no_of_desc; | |
678 | ||
679 | port->stats.xmitcalled++; | |
680 | frag_count = skb_shinfo(skb)->nr_frags + 1; | |
681 | ||
682 | if (unlikely(skb->len <= 0)) { | |
683 | dev_kfree_skb_any(skb); | |
684 | port->stats.badskblen++; | |
685 | return NETDEV_TX_OK; | |
686 | } | |
687 | ||
688 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
689 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
690 | "too large, can handle only %d frags\n", | |
691 | netxen_nic_driver_name, netdev->name, | |
692 | frag_count, MAX_BUFFERS_PER_CMD); | |
693 | port->stats.txdropped++; | |
694 | if ((++dropped_packet & 0xff) == 0xff) | |
695 | printk("%s: %s droppped packets = %d\n", | |
696 | netxen_nic_driver_name, netdev->name, | |
697 | dropped_packet); | |
698 | ||
699 | return NETDEV_TX_OK; | |
700 | } | |
701 | ||
702 | /* | |
703 | * Everything is set up. Now, we just need to transmit it out. | |
704 | * Note that we have to copy the contents of buffer over to | |
705 | * right place. Later on, this can be optimized out by de-coupling the | |
706 | * producer index from the buffer index. | |
707 | */ | |
708 | retry_getting_window: | |
709 | spin_lock_bh(&adapter->tx_lock); | |
710 | if (adapter->total_threads == MAX_XMIT_PRODUCERS) { | |
711 | spin_unlock_bh(&adapter->tx_lock); | |
712 | /* | |
713 | * Yield CPU | |
714 | */ | |
715 | if (!in_atomic()) | |
716 | schedule(); | |
717 | else { | |
718 | for (i = 0; i < 20; i++) | |
719 | cpu_relax(); /*This a nop instr on i386 */ | |
720 | } | |
721 | goto retry_getting_window; | |
722 | } | |
723 | local_producer = adapter->cmd_producer; | |
724 | /* There 4 fragments per descriptor */ | |
725 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
726 | if (netdev->features & NETIF_F_TSO) { |
727 | if (skb_shinfo(skb)->gso_size > 0) { | |
728 | ||
3d396eb1 | 729 | no_of_desc++; |
cb8011ad AK |
730 | if (((skb->nh.iph)->ihl * sizeof(u32)) + |
731 | ((skb->h.th)->doff * sizeof(u32)) + | |
732 | sizeof(struct ethhdr) > | |
733 | (sizeof(struct cmd_desc_type0) - NET_IP_ALIGN)) { | |
734 | no_of_desc++; | |
735 | } | |
3d396eb1 AK |
736 | } |
737 | } | |
738 | k = adapter->cmd_producer; | |
739 | max_tx_desc_count = adapter->max_tx_desc_count; | |
740 | last_cmd_consumer = adapter->last_cmd_consumer; | |
741 | if ((k + no_of_desc) >= | |
742 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
743 | last_cmd_consumer)) { | |
744 | spin_unlock_bh(&adapter->tx_lock); | |
745 | if (tries == 0) { | |
746 | local_bh_disable(); | |
747 | netxen_process_cmd_ring((unsigned long)adapter); | |
748 | local_bh_enable(); | |
749 | ++tries; | |
750 | goto retry_getting_window; | |
751 | } else { | |
752 | port->stats.nocmddescriptor++; | |
753 | DPRINTK(ERR, "No command descriptors available," | |
754 | " producer = %d, consumer = %d count=%llu," | |
755 | " dropping packet\n", producer, | |
756 | adapter->last_cmd_consumer, | |
757 | port->stats.nocmddescriptor); | |
758 | ||
759 | spin_lock_bh(&adapter->tx_lock); | |
760 | netif_stop_queue(netdev); | |
761 | port->flags |= NETXEN_NETDEV_STATUS; | |
762 | spin_unlock_bh(&adapter->tx_lock); | |
763 | return NETDEV_TX_BUSY; | |
764 | } | |
765 | } | |
766 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
767 | adapter->cmd_producer = k; | |
768 | adapter->total_threads++; | |
769 | adapter->num_threads++; | |
770 | ||
771 | spin_unlock_bh(&adapter->tx_lock); | |
772 | /* Copy the descriptors into the hardware */ | |
773 | producer = local_producer; | |
774 | saved_producer = producer; | |
775 | hwdesc = &hw->cmd_desc_head[producer]; | |
776 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
777 | /* Take skb->data itself */ | |
778 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 779 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
3d396eb1 AK |
780 | pbuf->mss = skb_shinfo(skb)->gso_size; |
781 | hwdesc->mss = skb_shinfo(skb)->gso_size; | |
782 | } else { | |
783 | pbuf->mss = 0; | |
784 | hwdesc->mss = 0; | |
785 | } | |
786 | pbuf->no_of_descriptors = no_of_desc; | |
787 | pbuf->total_length = skb->len; | |
788 | pbuf->skb = skb; | |
789 | pbuf->cmd = TX_ETHER_PKT; | |
790 | pbuf->frag_count = frag_count; | |
791 | pbuf->port = port->portnum; | |
792 | buffrag = &pbuf->frag_array[0]; | |
793 | buffrag->dma = pci_map_single(port->pdev, skb->data, first_seg_len, | |
794 | PCI_DMA_TODEVICE); | |
795 | buffrag->length = first_seg_len; | |
796 | CMD_DESC_TOTAL_LENGTH_WRT(hwdesc, skb->len); | |
797 | hwdesc->num_of_buffers = frag_count; | |
798 | hwdesc->opcode = TX_ETHER_PKT; | |
799 | ||
800 | CMD_DESC_PORT_WRT(hwdesc, port->portnum); | |
801 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); | |
802 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
803 | ||
804 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
805 | struct skb_frag_struct *frag; | |
806 | int len, temp_len; | |
807 | unsigned long offset; | |
808 | dma_addr_t temp_dma; | |
809 | ||
810 | /* move to next desc. if there is a need */ | |
811 | if ((i & 0x3) == 0) { | |
812 | k = 0; | |
813 | producer = get_next_index(producer, | |
814 | adapter->max_tx_desc_count); | |
815 | hwdesc = &hw->cmd_desc_head[producer]; | |
816 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
817 | } | |
818 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
819 | len = frag->size; | |
820 | offset = frag->page_offset; | |
821 | ||
822 | temp_len = len; | |
823 | temp_dma = pci_map_page(port->pdev, frag->page, offset, | |
824 | len, PCI_DMA_TODEVICE); | |
825 | ||
826 | buffrag++; | |
827 | buffrag->dma = temp_dma; | |
828 | buffrag->length = temp_len; | |
829 | ||
830 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
831 | switch (k) { | |
832 | case 0: | |
833 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
834 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
835 | break; | |
836 | case 1: | |
837 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
838 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
839 | break; | |
840 | case 2: | |
841 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
842 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
843 | break; | |
844 | case 3: | |
845 | hwdesc->buffer4_length = temp_len; | |
846 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); | |
847 | break; | |
848 | } | |
849 | frag++; | |
850 | } | |
851 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
852 | ||
853 | /* might change opcode to TX_TCP_LSO */ | |
854 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
855 | ||
856 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
857 | * the descriptor ring | |
858 | */ | |
859 | if (hw->cmd_desc_head[saved_producer].opcode == TX_TCP_LSO) { | |
860 | int hdr_len, first_hdr_len, more_hdr; | |
861 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
862 | if (hdr_len > (sizeof(struct cmd_desc_type0) - NET_IP_ALIGN)) { | |
863 | first_hdr_len = | |
864 | sizeof(struct cmd_desc_type0) - NET_IP_ALIGN; | |
865 | more_hdr = 1; | |
866 | } else { | |
867 | first_hdr_len = hdr_len; | |
868 | more_hdr = 0; | |
869 | } | |
870 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
871 | hwdesc = &hw->cmd_desc_head[producer]; | |
872 | ||
873 | /* copy the first 64 bytes */ | |
874 | memcpy(((void *)hwdesc) + NET_IP_ALIGN, | |
875 | (void *)(skb->data), first_hdr_len); | |
876 | producer = get_next_index(producer, max_tx_desc_count); | |
877 | ||
878 | if (more_hdr) { | |
879 | hwdesc = &hw->cmd_desc_head[producer]; | |
880 | /* copy the next 64 bytes - should be enough except | |
881 | * for pathological case | |
882 | */ | |
883 | memcpy((void *)hwdesc, (void *)(skb->data) + | |
884 | first_hdr_len, hdr_len - first_hdr_len); | |
885 | producer = get_next_index(producer, max_tx_desc_count); | |
886 | } | |
887 | } | |
888 | spin_lock_bh(&adapter->tx_lock); | |
889 | port->stats.txbytes += | |
890 | CMD_DESC_TOTAL_LENGTH(&hw->cmd_desc_head[saved_producer]); | |
891 | /* Code to update the adapter considering how many producer threads | |
892 | are currently working */ | |
893 | if ((--adapter->num_threads) == 0) { | |
894 | /* This is the last thread */ | |
895 | u32 crb_producer = adapter->cmd_producer; | |
896 | writel(crb_producer, | |
897 | NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET)); | |
898 | wmb(); | |
899 | adapter->total_threads = 0; | |
900 | } else { | |
901 | u32 crb_producer = 0; | |
902 | crb_producer = | |
903 | readl(NETXEN_CRB_NORMALIZE | |
904 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
905 | if (crb_producer == local_producer) { | |
906 | crb_producer = get_index_range(crb_producer, | |
907 | max_tx_desc_count, | |
908 | no_of_desc); | |
909 | writel(crb_producer, | |
910 | NETXEN_CRB_NORMALIZE(adapter, | |
911 | CRB_CMD_PRODUCER_OFFSET)); | |
912 | wmb(); | |
913 | } | |
914 | } | |
915 | ||
916 | port->stats.xmitfinished++; | |
917 | spin_unlock_bh(&adapter->tx_lock); | |
918 | ||
919 | netdev->trans_start = jiffies; | |
920 | ||
921 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
922 | ||
923 | DPRINTK(INFO, "Done. Send\n"); | |
924 | return NETDEV_TX_OK; | |
925 | } | |
926 | ||
927 | static void netxen_watchdog(unsigned long v) | |
928 | { | |
929 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
930 | schedule_work(&adapter->watchdog_task); | |
931 | } | |
932 | ||
933 | static void netxen_tx_timeout(struct net_device *netdev) | |
934 | { | |
935 | struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); | |
936 | struct netxen_adapter *adapter = port->adapter; | |
937 | ||
938 | schedule_work(&adapter->tx_timeout_task); | |
939 | } | |
940 | ||
941 | static void netxen_tx_timeout_task(struct net_device *netdev) | |
942 | { | |
943 | struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); | |
944 | unsigned long flags; | |
945 | ||
946 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
947 | netxen_nic_driver_name, netdev->name); | |
948 | ||
949 | spin_lock_irqsave(&port->adapter->lock, flags); | |
950 | netxen_nic_close(netdev); | |
951 | netxen_nic_open(netdev); | |
952 | spin_unlock_irqrestore(&port->adapter->lock, flags); | |
953 | netdev->trans_start = jiffies; | |
954 | netif_wake_queue(netdev); | |
955 | } | |
956 | ||
957 | static int | |
958 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
959 | { | |
960 | u32 ret = 0; | |
961 | ||
962 | DPRINTK(INFO, "Entered handle ISR\n"); | |
963 | ||
964 | adapter->stats.ints++; | |
965 | ||
966 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
967 | int count = 0; | |
968 | u32 mask; | |
969 | netxen_nic_disable_int(adapter); | |
970 | /* Window = 0 or 1 */ | |
971 | do { | |
71bd7877 AK |
972 | writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, |
973 | ISR_INT_TARGET_STATUS)); | |
974 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
3d396eb1 AK |
975 | } while (((mask & 0x80) != 0) && (++count < 32)); |
976 | if ((mask & 0x80) != 0) | |
977 | printk("Could not disable interrupt completely\n"); | |
978 | ||
979 | } | |
980 | adapter->stats.hostints++; | |
981 | ||
982 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { | |
983 | if (netif_rx_schedule_prep(netdev)) { | |
984 | /* | |
985 | * Interrupts are already disabled. | |
986 | */ | |
987 | __netif_rx_schedule(netdev); | |
988 | } else { | |
989 | static unsigned int intcount = 0; | |
990 | if ((++intcount & 0xfff) == 0xfff) | |
991 | printk(KERN_ERR | |
992 | "%s: %s interrupt %d while in poll\n", | |
993 | netxen_nic_driver_name, netdev->name, | |
994 | intcount); | |
995 | } | |
996 | ret = 1; | |
997 | } | |
998 | ||
999 | if (ret == 0) { | |
1000 | netxen_nic_enable_int(adapter); | |
1001 | } | |
1002 | ||
1003 | return ret; | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * netxen_intr - Interrupt Handler | |
1008 | * @irq: interrupt number | |
1009 | * data points to adapter stucture (which may be handling more than 1 port | |
1010 | */ | |
1494a814 | 1011 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1012 | { |
1013 | struct netxen_adapter *adapter; | |
1014 | struct netxen_port *port; | |
1015 | struct net_device *netdev; | |
1016 | int i; | |
1017 | ||
1018 | if (unlikely(!irq)) { | |
1019 | return IRQ_NONE; /* Not our interrupt */ | |
1020 | } | |
1021 | ||
1022 | adapter = (struct netxen_adapter *)data; | |
1023 | for (i = 0; i < adapter->ahw.max_ports; i++) { | |
1024 | port = adapter->port[i]; | |
1025 | netdev = port->netdev; | |
1026 | ||
1027 | /* process our status queue (for all 4 ports) */ | |
1028 | netxen_handle_int(adapter, netdev); | |
1029 | } | |
1030 | ||
1031 | return IRQ_HANDLED; | |
1032 | } | |
1033 | ||
1034 | static int netxen_nic_poll(struct net_device *netdev, int *budget) | |
1035 | { | |
1036 | struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); | |
1037 | struct netxen_adapter *adapter = port->adapter; | |
1038 | int work_to_do = min(*budget, netdev->quota); | |
1039 | int done = 1; | |
1040 | int ctx; | |
1041 | int this_work_done; | |
1042 | ||
1043 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
1044 | port->stats.polled++; | |
1045 | ||
1046 | adapter->work_done = 0; | |
1047 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { | |
1048 | /* | |
1049 | * Fairness issue. This will give undue weight to the | |
1050 | * receive context 0. | |
1051 | */ | |
1052 | ||
1053 | /* | |
1054 | * To avoid starvation, we give each of our receivers, | |
1055 | * a fraction of the quota. Sometimes, it might happen that we | |
1056 | * have enough quota to process every packet, but since all the | |
1057 | * packets are on one context, it gets only half of the quota, | |
1058 | * and ends up not processing it. | |
1059 | */ | |
1060 | this_work_done = netxen_process_rcv_ring(adapter, ctx, | |
1061 | work_to_do / | |
1062 | MAX_RCV_CTX); | |
1063 | adapter->work_done += this_work_done; | |
1064 | } | |
1065 | ||
1066 | netdev->quota -= adapter->work_done; | |
1067 | *budget -= adapter->work_done; | |
1068 | ||
1069 | if (adapter->work_done >= work_to_do | |
1070 | && netxen_nic_rx_has_work(adapter) != 0) | |
1071 | done = 0; | |
1072 | ||
1073 | netxen_process_cmd_ring((unsigned long)adapter); | |
1074 | ||
1075 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
1076 | adapter->work_done, work_to_do); | |
1077 | if (done) { | |
1078 | netif_rx_complete(netdev); | |
1079 | netxen_nic_enable_int(adapter); | |
1080 | } | |
1081 | ||
edf90163 | 1082 | return !done; |
3d396eb1 AK |
1083 | } |
1084 | ||
1085 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1086 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1087 | { | |
1088 | struct netxen_port *port = netdev_priv(netdev); | |
1089 | struct netxen_adapter *adapter = port->adapter; | |
1090 | disable_irq(adapter->irq); | |
1494a814 | 1091 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1092 | enable_irq(adapter->irq); |
1093 | } | |
1094 | #endif | |
1095 | /* | |
1096 | * netxen_nic_ioctl () We provide the tcl/phanmon support through these | |
1097 | * ioctls. | |
1098 | */ | |
1099 | static int | |
1100 | netxen_nic_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
1101 | { | |
1102 | int err = 0; | |
cb8011ad | 1103 | unsigned long nr_bytes = 0; |
3d396eb1 AK |
1104 | struct netxen_port *port = netdev_priv(netdev); |
1105 | struct netxen_adapter *adapter = port->adapter; | |
cb8011ad | 1106 | char dev_name[NETXEN_NIC_NAME_LEN]; |
3d396eb1 AK |
1107 | |
1108 | DPRINTK(INFO, "doing ioctl for %s\n", netdev->name); | |
1109 | switch (cmd) { | |
1110 | case NETXEN_NIC_CMD: | |
1111 | err = netxen_nic_do_ioctl(adapter, (void *)ifr->ifr_data, port); | |
1112 | break; | |
1113 | ||
1114 | case NETXEN_NIC_NAME: | |
1115 | DPRINTK(INFO, "ioctl cmd for NetXen\n"); | |
1116 | if (ifr->ifr_data) { | |
cb8011ad AK |
1117 | sprintf(dev_name, "%s-%d", NETXEN_NIC_NAME_RSP, |
1118 | port->portnum); | |
1119 | nr_bytes = copy_to_user((char *)ifr->ifr_data, dev_name, | |
1120 | NETXEN_NIC_NAME_LEN); | |
1121 | if (nr_bytes) | |
1122 | err = -EIO; | |
1123 | ||
3d396eb1 AK |
1124 | } |
1125 | break; | |
1126 | ||
1127 | default: | |
1128 | DPRINTK(INFO, "ioctl cmd %x not supported\n", cmd); | |
1129 | err = -EOPNOTSUPP; | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | return err; | |
1134 | } | |
1135 | ||
1136 | static struct pci_driver netxen_driver = { | |
1137 | .name = netxen_nic_driver_name, | |
1138 | .id_table = netxen_pci_tbl, | |
1139 | .probe = netxen_nic_probe, | |
1140 | .remove = __devexit_p(netxen_nic_remove) | |
1141 | }; | |
1142 | ||
1143 | /* Driver Registration on NetXen card */ | |
1144 | ||
1145 | static int __init netxen_init_module(void) | |
1146 | { | |
3d396eb1 AK |
1147 | return pci_module_init(&netxen_driver); |
1148 | } | |
1149 | ||
1150 | module_init(netxen_init_module); | |
1151 | ||
1152 | static void __exit netxen_exit_module(void) | |
1153 | { | |
1154 | /* | |
1155 | * Wait for some time to allow the dma to drain, if any. | |
1156 | */ | |
1157 | mdelay(5); | |
1158 | pci_unregister_driver(&netxen_driver); | |
1159 | } | |
1160 | ||
1161 | module_exit(netxen_exit_module); |