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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
4 | Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2 of the License, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License along with | |
17 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
18 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | The full GNU General Public License is included in this distribution in the | |
21 | file called LICENSE. | |
22 | ||
23 | Contact Information: | |
24 | Linux NICS <linux.nics@intel.com> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "ixgb.h" | |
30 | ||
31 | /* Change Log | |
32 | * 1.0.88 01/05/05 | |
33 | * - include fix to the condition that determines when to quit NAPI - Robert Olsson | |
34 | * - use netif_poll_{disable/enable} to synchronize between NAPI and i/f up/down | |
35 | * 1.0.84 10/26/04 | |
36 | * - reset buffer_info->dma in Tx resource cleanup logic | |
37 | * 1.0.83 10/12/04 | |
38 | * - sparse cleanup - shemminger@osdl.org | |
39 | * - fix tx resource cleanup logic | |
40 | */ | |
41 | ||
42 | char ixgb_driver_name[] = "ixgb"; | |
43 | char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver"; | |
44 | ||
45 | #ifndef CONFIG_IXGB_NAPI | |
46 | #define DRIVERNAPI | |
47 | #else | |
48 | #define DRIVERNAPI "-NAPI" | |
49 | #endif | |
50 | char ixgb_driver_version[] = "1.0.90-k2"DRIVERNAPI; | |
51 | char ixgb_copyright[] = "Copyright (c) 1999-2005 Intel Corporation."; | |
52 | ||
53 | /* ixgb_pci_tbl - PCI Device ID Table | |
54 | * | |
55 | * Wildcard entries (PCI_ANY_ID) should come last | |
56 | * Last entry must be all 0s | |
57 | * | |
58 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
59 | * Class, Class Mask, private data (not used) } | |
60 | */ | |
61 | static struct pci_device_id ixgb_pci_tbl[] = { | |
62 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX, | |
63 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
64 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR, | |
65 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
66 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR, | |
67 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
68 | ||
69 | /* required last entry */ | |
70 | {0,} | |
71 | }; | |
72 | ||
73 | MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl); | |
74 | ||
75 | /* Local Function Prototypes */ | |
76 | ||
77 | int ixgb_up(struct ixgb_adapter *adapter); | |
78 | void ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog); | |
79 | void ixgb_reset(struct ixgb_adapter *adapter); | |
80 | int ixgb_setup_tx_resources(struct ixgb_adapter *adapter); | |
81 | int ixgb_setup_rx_resources(struct ixgb_adapter *adapter); | |
82 | void ixgb_free_tx_resources(struct ixgb_adapter *adapter); | |
83 | void ixgb_free_rx_resources(struct ixgb_adapter *adapter); | |
84 | void ixgb_update_stats(struct ixgb_adapter *adapter); | |
85 | ||
86 | static int ixgb_init_module(void); | |
87 | static void ixgb_exit_module(void); | |
88 | static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
89 | static void __devexit ixgb_remove(struct pci_dev *pdev); | |
90 | static int ixgb_sw_init(struct ixgb_adapter *adapter); | |
91 | static int ixgb_open(struct net_device *netdev); | |
92 | static int ixgb_close(struct net_device *netdev); | |
93 | static void ixgb_configure_tx(struct ixgb_adapter *adapter); | |
94 | static void ixgb_configure_rx(struct ixgb_adapter *adapter); | |
95 | static void ixgb_setup_rctl(struct ixgb_adapter *adapter); | |
96 | static void ixgb_clean_tx_ring(struct ixgb_adapter *adapter); | |
97 | static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter); | |
98 | static void ixgb_set_multi(struct net_device *netdev); | |
99 | static void ixgb_watchdog(unsigned long data); | |
100 | static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
101 | static struct net_device_stats *ixgb_get_stats(struct net_device *netdev); | |
102 | static int ixgb_change_mtu(struct net_device *netdev, int new_mtu); | |
103 | static int ixgb_set_mac(struct net_device *netdev, void *p); | |
104 | static irqreturn_t ixgb_intr(int irq, void *data, struct pt_regs *regs); | |
105 | static boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter); | |
106 | #ifdef CONFIG_IXGB_NAPI | |
107 | static int ixgb_clean(struct net_device *netdev, int *budget); | |
108 | static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter, | |
109 | int *work_done, int work_to_do); | |
110 | #else | |
111 | static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter); | |
112 | #endif | |
113 | static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter); | |
114 | void ixgb_set_ethtool_ops(struct net_device *netdev); | |
115 | static void ixgb_tx_timeout(struct net_device *dev); | |
116 | static void ixgb_tx_timeout_task(struct net_device *dev); | |
117 | static void ixgb_vlan_rx_register(struct net_device *netdev, | |
118 | struct vlan_group *grp); | |
119 | static void ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
120 | static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
121 | static void ixgb_restore_vlan(struct ixgb_adapter *adapter); | |
122 | ||
123 | static int ixgb_notify_reboot(struct notifier_block *, unsigned long event, | |
124 | void *ptr); | |
125 | static int ixgb_suspend(struct pci_dev *pdev, uint32_t state); | |
126 | ||
127 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
128 | /* for netdump / net console */ | |
129 | static void ixgb_netpoll(struct net_device *dev); | |
130 | #endif | |
131 | ||
132 | struct notifier_block ixgb_notifier_reboot = { | |
133 | .notifier_call = ixgb_notify_reboot, | |
134 | .next = NULL, | |
135 | .priority = 0 | |
136 | }; | |
137 | ||
138 | /* Exported from other modules */ | |
139 | ||
140 | extern void ixgb_check_options(struct ixgb_adapter *adapter); | |
141 | ||
142 | static struct pci_driver ixgb_driver = { | |
143 | .name = ixgb_driver_name, | |
144 | .id_table = ixgb_pci_tbl, | |
145 | .probe = ixgb_probe, | |
146 | .remove = __devexit_p(ixgb_remove), | |
147 | /* Power Managment Hooks */ | |
148 | .suspend = NULL, | |
149 | .resume = NULL | |
150 | }; | |
151 | ||
152 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
153 | MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver"); | |
154 | MODULE_LICENSE("GPL"); | |
155 | ||
156 | /* some defines for controlling descriptor fetches in h/w */ | |
157 | #define RXDCTL_PTHRESH_DEFAULT 128 /* chip considers prefech below this */ | |
158 | #define RXDCTL_HTHRESH_DEFAULT 16 /* chip will only prefetch if tail is | |
159 | pushed this many descriptors from head */ | |
160 | #define RXDCTL_WTHRESH_DEFAULT 16 /* chip writes back at this many or RXT0 */ | |
161 | ||
162 | /** | |
163 | * ixgb_init_module - Driver Registration Routine | |
164 | * | |
165 | * ixgb_init_module is the first routine called when the driver is | |
166 | * loaded. All it does is register with the PCI subsystem. | |
167 | **/ | |
168 | ||
169 | static int __init | |
170 | ixgb_init_module(void) | |
171 | { | |
172 | int ret; | |
173 | printk(KERN_INFO "%s - version %s\n", | |
174 | ixgb_driver_string, ixgb_driver_version); | |
175 | ||
176 | printk(KERN_INFO "%s\n", ixgb_copyright); | |
177 | ||
178 | ret = pci_module_init(&ixgb_driver); | |
179 | if(ret >= 0) { | |
180 | register_reboot_notifier(&ixgb_notifier_reboot); | |
181 | } | |
182 | return ret; | |
183 | } | |
184 | ||
185 | module_init(ixgb_init_module); | |
186 | ||
187 | /** | |
188 | * ixgb_exit_module - Driver Exit Cleanup Routine | |
189 | * | |
190 | * ixgb_exit_module is called just before the driver is removed | |
191 | * from memory. | |
192 | **/ | |
193 | ||
194 | static void __exit | |
195 | ixgb_exit_module(void) | |
196 | { | |
197 | unregister_reboot_notifier(&ixgb_notifier_reboot); | |
198 | pci_unregister_driver(&ixgb_driver); | |
199 | } | |
200 | ||
201 | module_exit(ixgb_exit_module); | |
202 | ||
203 | /** | |
204 | * ixgb_irq_disable - Mask off interrupt generation on the NIC | |
205 | * @adapter: board private structure | |
206 | **/ | |
207 | ||
208 | static inline void | |
209 | ixgb_irq_disable(struct ixgb_adapter *adapter) | |
210 | { | |
211 | atomic_inc(&adapter->irq_sem); | |
212 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); | |
213 | IXGB_WRITE_FLUSH(&adapter->hw); | |
214 | synchronize_irq(adapter->pdev->irq); | |
215 | } | |
216 | ||
217 | /** | |
218 | * ixgb_irq_enable - Enable default interrupt generation settings | |
219 | * @adapter: board private structure | |
220 | **/ | |
221 | ||
222 | static inline void | |
223 | ixgb_irq_enable(struct ixgb_adapter *adapter) | |
224 | { | |
225 | if(atomic_dec_and_test(&adapter->irq_sem)) { | |
226 | IXGB_WRITE_REG(&adapter->hw, IMS, | |
6dfbb6dd MC |
227 | IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW | |
228 | IXGB_INT_LSC); | |
1da177e4 LT |
229 | IXGB_WRITE_FLUSH(&adapter->hw); |
230 | } | |
231 | } | |
232 | ||
233 | int | |
234 | ixgb_up(struct ixgb_adapter *adapter) | |
235 | { | |
236 | struct net_device *netdev = adapter->netdev; | |
237 | int err; | |
238 | int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
239 | struct ixgb_hw *hw = &adapter->hw; | |
240 | ||
241 | /* hardware has been reset, we need to reload some things */ | |
242 | ||
243 | ixgb_set_multi(netdev); | |
244 | ||
245 | ixgb_restore_vlan(adapter); | |
246 | ||
247 | ixgb_configure_tx(adapter); | |
248 | ixgb_setup_rctl(adapter); | |
249 | ixgb_configure_rx(adapter); | |
250 | ixgb_alloc_rx_buffers(adapter); | |
251 | ||
252 | #ifdef CONFIG_PCI_MSI | |
253 | { | |
254 | boolean_t pcix = (IXGB_READ_REG(&adapter->hw, STATUS) & | |
255 | IXGB_STATUS_PCIX_MODE) ? TRUE : FALSE; | |
256 | adapter->have_msi = TRUE; | |
257 | ||
258 | if (!pcix) | |
259 | adapter->have_msi = FALSE; | |
260 | else if((err = pci_enable_msi(adapter->pdev))) { | |
261 | printk (KERN_ERR | |
262 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
263 | adapter->have_msi = FALSE; | |
264 | /* proceed to try to request regular interrupt */ | |
265 | } | |
266 | } | |
267 | ||
268 | #endif | |
269 | if((err = request_irq(adapter->pdev->irq, &ixgb_intr, | |
270 | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
271 | netdev->name, netdev))) | |
272 | return err; | |
273 | ||
274 | /* disable interrupts and get the hardware into a known state */ | |
275 | IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); | |
276 | ||
277 | if((hw->max_frame_size != max_frame) || | |
278 | (hw->max_frame_size != | |
279 | (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) { | |
280 | ||
281 | hw->max_frame_size = max_frame; | |
282 | ||
283 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
284 | ||
285 | if(hw->max_frame_size > | |
286 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { | |
287 | uint32_t ctrl0 = IXGB_READ_REG(hw, CTRL0); | |
288 | ||
289 | if(!(ctrl0 & IXGB_CTRL0_JFE)) { | |
290 | ctrl0 |= IXGB_CTRL0_JFE; | |
291 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
296 | mod_timer(&adapter->watchdog_timer, jiffies); | |
297 | ixgb_irq_enable(adapter); | |
298 | ||
299 | #ifdef CONFIG_IXGB_NAPI | |
300 | netif_poll_enable(netdev); | |
301 | #endif | |
302 | return 0; | |
303 | } | |
304 | ||
305 | void | |
306 | ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog) | |
307 | { | |
308 | struct net_device *netdev = adapter->netdev; | |
309 | ||
310 | ixgb_irq_disable(adapter); | |
311 | free_irq(adapter->pdev->irq, netdev); | |
312 | #ifdef CONFIG_PCI_MSI | |
313 | if(adapter->have_msi == TRUE) | |
314 | pci_disable_msi(adapter->pdev); | |
315 | ||
316 | #endif | |
317 | if(kill_watchdog) | |
318 | del_timer_sync(&adapter->watchdog_timer); | |
319 | #ifdef CONFIG_IXGB_NAPI | |
320 | netif_poll_disable(netdev); | |
321 | #endif | |
322 | adapter->link_speed = 0; | |
323 | adapter->link_duplex = 0; | |
324 | netif_carrier_off(netdev); | |
325 | netif_stop_queue(netdev); | |
326 | ||
327 | ixgb_reset(adapter); | |
328 | ixgb_clean_tx_ring(adapter); | |
329 | ixgb_clean_rx_ring(adapter); | |
330 | } | |
331 | ||
332 | void | |
333 | ixgb_reset(struct ixgb_adapter *adapter) | |
334 | { | |
335 | ||
336 | ixgb_adapter_stop(&adapter->hw); | |
337 | if(!ixgb_init_hw(&adapter->hw)) | |
338 | IXGB_DBG("ixgb_init_hw failed.\n"); | |
339 | } | |
340 | ||
341 | /** | |
342 | * ixgb_probe - Device Initialization Routine | |
343 | * @pdev: PCI device information struct | |
344 | * @ent: entry in ixgb_pci_tbl | |
345 | * | |
346 | * Returns 0 on success, negative on failure | |
347 | * | |
348 | * ixgb_probe initializes an adapter identified by a pci_dev structure. | |
349 | * The OS initialization, configuring of the adapter private structure, | |
350 | * and a hardware reset occur. | |
351 | **/ | |
352 | ||
353 | static int __devinit | |
354 | ixgb_probe(struct pci_dev *pdev, | |
355 | const struct pci_device_id *ent) | |
356 | { | |
357 | struct net_device *netdev = NULL; | |
358 | struct ixgb_adapter *adapter; | |
359 | static int cards_found = 0; | |
360 | unsigned long mmio_start; | |
361 | int mmio_len; | |
362 | int pci_using_dac; | |
363 | int i; | |
364 | int err; | |
365 | ||
366 | if((err = pci_enable_device(pdev))) | |
367 | return err; | |
368 | ||
369 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { | |
370 | pci_using_dac = 1; | |
371 | } else { | |
372 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { | |
373 | IXGB_ERR("No usable DMA configuration, aborting\n"); | |
374 | return err; | |
375 | } | |
376 | pci_using_dac = 0; | |
377 | } | |
378 | ||
379 | if((err = pci_request_regions(pdev, ixgb_driver_name))) | |
380 | return err; | |
381 | ||
382 | pci_set_master(pdev); | |
383 | ||
384 | netdev = alloc_etherdev(sizeof(struct ixgb_adapter)); | |
385 | if(!netdev) { | |
386 | err = -ENOMEM; | |
387 | goto err_alloc_etherdev; | |
388 | } | |
389 | ||
390 | SET_MODULE_OWNER(netdev); | |
391 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
392 | ||
393 | pci_set_drvdata(pdev, netdev); | |
394 | adapter = netdev->priv; | |
395 | adapter->netdev = netdev; | |
396 | adapter->pdev = pdev; | |
397 | adapter->hw.back = adapter; | |
398 | ||
399 | mmio_start = pci_resource_start(pdev, BAR_0); | |
400 | mmio_len = pci_resource_len(pdev, BAR_0); | |
401 | ||
402 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
403 | if(!adapter->hw.hw_addr) { | |
404 | err = -EIO; | |
405 | goto err_ioremap; | |
406 | } | |
407 | ||
408 | for(i = BAR_1; i <= BAR_5; i++) { | |
409 | if(pci_resource_len(pdev, i) == 0) | |
410 | continue; | |
411 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
412 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
413 | break; | |
414 | } | |
415 | } | |
416 | ||
417 | netdev->open = &ixgb_open; | |
418 | netdev->stop = &ixgb_close; | |
419 | netdev->hard_start_xmit = &ixgb_xmit_frame; | |
420 | netdev->get_stats = &ixgb_get_stats; | |
421 | netdev->set_multicast_list = &ixgb_set_multi; | |
422 | netdev->set_mac_address = &ixgb_set_mac; | |
423 | netdev->change_mtu = &ixgb_change_mtu; | |
424 | ixgb_set_ethtool_ops(netdev); | |
425 | netdev->tx_timeout = &ixgb_tx_timeout; | |
426 | netdev->watchdog_timeo = HZ; | |
427 | #ifdef CONFIG_IXGB_NAPI | |
428 | netdev->poll = &ixgb_clean; | |
429 | netdev->weight = 64; | |
430 | #endif | |
431 | netdev->vlan_rx_register = ixgb_vlan_rx_register; | |
432 | netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid; | |
433 | netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid; | |
434 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
435 | netdev->poll_controller = ixgb_netpoll; | |
436 | #endif | |
437 | ||
438 | netdev->mem_start = mmio_start; | |
439 | netdev->mem_end = mmio_start + mmio_len; | |
440 | netdev->base_addr = adapter->hw.io_base; | |
441 | ||
442 | adapter->bd_number = cards_found; | |
443 | adapter->link_speed = 0; | |
444 | adapter->link_duplex = 0; | |
445 | ||
446 | /* setup the private structure */ | |
447 | ||
448 | if((err = ixgb_sw_init(adapter))) | |
449 | goto err_sw_init; | |
450 | ||
451 | netdev->features = NETIF_F_SG | | |
452 | NETIF_F_HW_CSUM | | |
453 | NETIF_F_HW_VLAN_TX | | |
454 | NETIF_F_HW_VLAN_RX | | |
455 | NETIF_F_HW_VLAN_FILTER; | |
456 | #ifdef NETIF_F_TSO | |
457 | netdev->features |= NETIF_F_TSO; | |
458 | #endif | |
459 | ||
460 | if(pci_using_dac) | |
461 | netdev->features |= NETIF_F_HIGHDMA; | |
462 | ||
463 | /* make sure the EEPROM is good */ | |
464 | ||
465 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
466 | printk(KERN_ERR "The EEPROM Checksum Is Not Valid\n"); | |
467 | err = -EIO; | |
468 | goto err_eeprom; | |
469 | } | |
470 | ||
471 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
472 | ||
473 | if(!is_valid_ether_addr(netdev->dev_addr)) { | |
474 | err = -EIO; | |
475 | goto err_eeprom; | |
476 | } | |
477 | ||
478 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); | |
479 | ||
480 | init_timer(&adapter->watchdog_timer); | |
481 | adapter->watchdog_timer.function = &ixgb_watchdog; | |
482 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
483 | ||
484 | INIT_WORK(&adapter->tx_timeout_task, | |
485 | (void (*)(void *))ixgb_tx_timeout_task, netdev); | |
486 | ||
487 | if((err = register_netdev(netdev))) | |
488 | goto err_register; | |
489 | ||
490 | /* we're going to reset, so assume we have no link for now */ | |
491 | ||
492 | netif_carrier_off(netdev); | |
493 | netif_stop_queue(netdev); | |
494 | ||
495 | printk(KERN_INFO "%s: Intel(R) PRO/10GbE Network Connection\n", | |
496 | netdev->name); | |
497 | ixgb_check_options(adapter); | |
498 | /* reset the hardware with the new settings */ | |
499 | ||
500 | ixgb_reset(adapter); | |
501 | ||
502 | cards_found++; | |
503 | return 0; | |
504 | ||
505 | err_register: | |
506 | err_sw_init: | |
507 | err_eeprom: | |
508 | iounmap(adapter->hw.hw_addr); | |
509 | err_ioremap: | |
510 | free_netdev(netdev); | |
511 | err_alloc_etherdev: | |
512 | pci_release_regions(pdev); | |
513 | return err; | |
514 | } | |
515 | ||
516 | /** | |
517 | * ixgb_remove - Device Removal Routine | |
518 | * @pdev: PCI device information struct | |
519 | * | |
520 | * ixgb_remove is called by the PCI subsystem to alert the driver | |
521 | * that it should release a PCI device. The could be caused by a | |
522 | * Hot-Plug event, or because the driver is going to be removed from | |
523 | * memory. | |
524 | **/ | |
525 | ||
526 | static void __devexit | |
527 | ixgb_remove(struct pci_dev *pdev) | |
528 | { | |
529 | struct net_device *netdev = pci_get_drvdata(pdev); | |
530 | struct ixgb_adapter *adapter = netdev->priv; | |
531 | ||
532 | unregister_netdev(netdev); | |
533 | ||
534 | iounmap(adapter->hw.hw_addr); | |
535 | pci_release_regions(pdev); | |
536 | ||
537 | free_netdev(netdev); | |
538 | } | |
539 | ||
540 | /** | |
541 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) | |
542 | * @adapter: board private structure to initialize | |
543 | * | |
544 | * ixgb_sw_init initializes the Adapter private data structure. | |
545 | * Fields are initialized based on PCI device information and | |
546 | * OS network device settings (MTU size). | |
547 | **/ | |
548 | ||
549 | static int __devinit | |
550 | ixgb_sw_init(struct ixgb_adapter *adapter) | |
551 | { | |
552 | struct ixgb_hw *hw = &adapter->hw; | |
553 | struct net_device *netdev = adapter->netdev; | |
554 | struct pci_dev *pdev = adapter->pdev; | |
555 | ||
556 | /* PCI config space info */ | |
557 | ||
558 | hw->vendor_id = pdev->vendor; | |
559 | hw->device_id = pdev->device; | |
560 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
561 | hw->subsystem_id = pdev->subsystem_device; | |
562 | ||
563 | adapter->rx_buffer_len = IXGB_RXBUFFER_2048; | |
564 | ||
565 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
566 | ||
567 | if((hw->device_id == IXGB_DEVICE_ID_82597EX) | |
568 | ||(hw->device_id == IXGB_DEVICE_ID_82597EX_LR) | |
569 | ||(hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) | |
570 | hw->mac_type = ixgb_82597; | |
571 | else { | |
572 | /* should never have loaded on this device */ | |
573 | printk(KERN_ERR "ixgb: unsupported device id\n"); | |
574 | } | |
575 | ||
576 | /* enable flow control to be programmed */ | |
577 | hw->fc.send_xon = 1; | |
578 | ||
579 | atomic_set(&adapter->irq_sem, 1); | |
580 | spin_lock_init(&adapter->tx_lock); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | /** | |
586 | * ixgb_open - Called when a network interface is made active | |
587 | * @netdev: network interface device structure | |
588 | * | |
589 | * Returns 0 on success, negative value on failure | |
590 | * | |
591 | * The open entry point is called when a network interface is made | |
592 | * active by the system (IFF_UP). At this point all resources needed | |
593 | * for transmit and receive operations are allocated, the interrupt | |
594 | * handler is registered with the OS, the watchdog timer is started, | |
595 | * and the stack is notified that the interface is ready. | |
596 | **/ | |
597 | ||
598 | static int | |
599 | ixgb_open(struct net_device *netdev) | |
600 | { | |
601 | struct ixgb_adapter *adapter = netdev->priv; | |
602 | int err; | |
603 | ||
604 | /* allocate transmit descriptors */ | |
605 | ||
606 | if((err = ixgb_setup_tx_resources(adapter))) | |
607 | goto err_setup_tx; | |
608 | ||
609 | /* allocate receive descriptors */ | |
610 | ||
611 | if((err = ixgb_setup_rx_resources(adapter))) | |
612 | goto err_setup_rx; | |
613 | ||
614 | if((err = ixgb_up(adapter))) | |
615 | goto err_up; | |
616 | ||
617 | return 0; | |
618 | ||
619 | err_up: | |
620 | ixgb_free_rx_resources(adapter); | |
621 | err_setup_rx: | |
622 | ixgb_free_tx_resources(adapter); | |
623 | err_setup_tx: | |
624 | ixgb_reset(adapter); | |
625 | ||
626 | return err; | |
627 | } | |
628 | ||
629 | /** | |
630 | * ixgb_close - Disables a network interface | |
631 | * @netdev: network interface device structure | |
632 | * | |
633 | * Returns 0, this is not allowed to fail | |
634 | * | |
635 | * The close entry point is called when an interface is de-activated | |
636 | * by the OS. The hardware is still under the drivers control, but | |
637 | * needs to be disabled. A global MAC reset is issued to stop the | |
638 | * hardware, and all transmit and receive resources are freed. | |
639 | **/ | |
640 | ||
641 | static int | |
642 | ixgb_close(struct net_device *netdev) | |
643 | { | |
644 | struct ixgb_adapter *adapter = netdev->priv; | |
645 | ||
646 | ixgb_down(adapter, TRUE); | |
647 | ||
648 | ixgb_free_tx_resources(adapter); | |
649 | ixgb_free_rx_resources(adapter); | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
654 | /** | |
655 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) | |
656 | * @adapter: board private structure | |
657 | * | |
658 | * Return 0 on success, negative on failure | |
659 | **/ | |
660 | ||
661 | int | |
662 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) | |
663 | { | |
664 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
665 | struct pci_dev *pdev = adapter->pdev; | |
666 | int size; | |
667 | ||
668 | size = sizeof(struct ixgb_buffer) * txdr->count; | |
669 | txdr->buffer_info = vmalloc(size); | |
670 | if(!txdr->buffer_info) { | |
671 | return -ENOMEM; | |
672 | } | |
673 | memset(txdr->buffer_info, 0, size); | |
674 | ||
675 | /* round up to nearest 4K */ | |
676 | ||
677 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); | |
678 | IXGB_ROUNDUP(txdr->size, 4096); | |
679 | ||
680 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
681 | if(!txdr->desc) { | |
682 | vfree(txdr->buffer_info); | |
683 | return -ENOMEM; | |
684 | } | |
685 | memset(txdr->desc, 0, txdr->size); | |
686 | ||
687 | txdr->next_to_use = 0; | |
688 | txdr->next_to_clean = 0; | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | /** | |
694 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. | |
695 | * @adapter: board private structure | |
696 | * | |
697 | * Configure the Tx unit of the MAC after a reset. | |
698 | **/ | |
699 | ||
700 | static void | |
701 | ixgb_configure_tx(struct ixgb_adapter *adapter) | |
702 | { | |
703 | uint64_t tdba = adapter->tx_ring.dma; | |
704 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); | |
705 | uint32_t tctl; | |
706 | struct ixgb_hw *hw = &adapter->hw; | |
707 | ||
708 | /* Setup the Base and Length of the Tx Descriptor Ring | |
709 | * tx_ring.dma can be either a 32 or 64 bit value | |
710 | */ | |
711 | ||
712 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
713 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
714 | ||
715 | IXGB_WRITE_REG(hw, TDLEN, tdlen); | |
716 | ||
717 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
718 | ||
719 | IXGB_WRITE_REG(hw, TDH, 0); | |
720 | IXGB_WRITE_REG(hw, TDT, 0); | |
721 | ||
722 | /* don't set up txdctl, it induces performance problems if configured | |
723 | * incorrectly */ | |
724 | /* Set the Tx Interrupt Delay register */ | |
725 | ||
726 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); | |
727 | ||
728 | /* Program the Transmit Control Register */ | |
729 | ||
730 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; | |
731 | IXGB_WRITE_REG(hw, TCTL, tctl); | |
732 | ||
733 | /* Setup Transmit Descriptor Settings for this adapter */ | |
734 | adapter->tx_cmd_type = | |
735 | IXGB_TX_DESC_TYPE | |
736 | | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); | |
737 | } | |
738 | ||
739 | /** | |
740 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) | |
741 | * @adapter: board private structure | |
742 | * | |
743 | * Returns 0 on success, negative on failure | |
744 | **/ | |
745 | ||
746 | int | |
747 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) | |
748 | { | |
749 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; | |
750 | struct pci_dev *pdev = adapter->pdev; | |
751 | int size; | |
752 | ||
753 | size = sizeof(struct ixgb_buffer) * rxdr->count; | |
754 | rxdr->buffer_info = vmalloc(size); | |
755 | if(!rxdr->buffer_info) { | |
756 | return -ENOMEM; | |
757 | } | |
758 | memset(rxdr->buffer_info, 0, size); | |
759 | ||
760 | /* Round up to nearest 4K */ | |
761 | ||
762 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); | |
763 | IXGB_ROUNDUP(rxdr->size, 4096); | |
764 | ||
765 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
766 | ||
767 | if(!rxdr->desc) { | |
768 | vfree(rxdr->buffer_info); | |
769 | return -ENOMEM; | |
770 | } | |
771 | memset(rxdr->desc, 0, rxdr->size); | |
772 | ||
773 | rxdr->next_to_clean = 0; | |
774 | rxdr->next_to_use = 0; | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | /** | |
780 | * ixgb_setup_rctl - configure the receive control register | |
781 | * @adapter: Board private structure | |
782 | **/ | |
783 | ||
784 | static void | |
785 | ixgb_setup_rctl(struct ixgb_adapter *adapter) | |
786 | { | |
787 | uint32_t rctl; | |
788 | ||
789 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
790 | ||
791 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); | |
792 | ||
793 | rctl |= | |
794 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | | |
795 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | | |
796 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); | |
797 | ||
798 | rctl |= IXGB_RCTL_SECRC; | |
799 | ||
800 | switch (adapter->rx_buffer_len) { | |
801 | case IXGB_RXBUFFER_2048: | |
802 | default: | |
803 | rctl |= IXGB_RCTL_BSIZE_2048; | |
804 | break; | |
805 | case IXGB_RXBUFFER_4096: | |
806 | rctl |= IXGB_RCTL_BSIZE_4096; | |
807 | break; | |
808 | case IXGB_RXBUFFER_8192: | |
809 | rctl |= IXGB_RCTL_BSIZE_8192; | |
810 | break; | |
811 | case IXGB_RXBUFFER_16384: | |
812 | rctl |= IXGB_RCTL_BSIZE_16384; | |
813 | break; | |
814 | } | |
815 | ||
816 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
817 | } | |
818 | ||
819 | /** | |
820 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. | |
821 | * @adapter: board private structure | |
822 | * | |
823 | * Configure the Rx unit of the MAC after a reset. | |
824 | **/ | |
825 | ||
826 | static void | |
827 | ixgb_configure_rx(struct ixgb_adapter *adapter) | |
828 | { | |
829 | uint64_t rdba = adapter->rx_ring.dma; | |
830 | uint32_t rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); | |
831 | struct ixgb_hw *hw = &adapter->hw; | |
832 | uint32_t rctl; | |
833 | uint32_t rxcsum; | |
834 | uint32_t rxdctl; | |
835 | ||
836 | /* make sure receives are disabled while setting up the descriptors */ | |
837 | ||
838 | rctl = IXGB_READ_REG(hw, RCTL); | |
839 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); | |
840 | ||
841 | /* set the Receive Delay Timer Register */ | |
842 | ||
843 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); | |
844 | ||
845 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
846 | ||
847 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
848 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
849 | ||
850 | IXGB_WRITE_REG(hw, RDLEN, rdlen); | |
851 | ||
852 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
853 | IXGB_WRITE_REG(hw, RDH, 0); | |
854 | IXGB_WRITE_REG(hw, RDT, 0); | |
855 | ||
856 | /* set up pre-fetching of receive buffers so we get some before we | |
857 | * run out (default hardware behavior is to run out before fetching | |
858 | * more). This sets up to fetch if HTHRESH rx descriptors are avail | |
859 | * and the descriptors in hw cache are below PTHRESH. This avoids | |
860 | * the hardware behavior of fetching <=512 descriptors in a single | |
861 | * burst that pre-empts all other activity, usually causing fifo | |
862 | * overflows. */ | |
863 | /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */ | |
864 | rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT | | |
865 | RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT | | |
866 | RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT; | |
867 | IXGB_WRITE_REG(hw, RXDCTL, rxdctl); | |
868 | ||
869 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
870 | if(adapter->rx_csum == TRUE) { | |
871 | rxcsum = IXGB_READ_REG(hw, RXCSUM); | |
872 | rxcsum |= IXGB_RXCSUM_TUOFL; | |
873 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); | |
874 | } | |
875 | ||
876 | /* Enable Receives */ | |
877 | ||
878 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
879 | } | |
880 | ||
881 | /** | |
882 | * ixgb_free_tx_resources - Free Tx Resources | |
883 | * @adapter: board private structure | |
884 | * | |
885 | * Free all transmit software resources | |
886 | **/ | |
887 | ||
888 | void | |
889 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) | |
890 | { | |
891 | struct pci_dev *pdev = adapter->pdev; | |
892 | ||
893 | ixgb_clean_tx_ring(adapter); | |
894 | ||
895 | vfree(adapter->tx_ring.buffer_info); | |
896 | adapter->tx_ring.buffer_info = NULL; | |
897 | ||
898 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
899 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
900 | ||
901 | adapter->tx_ring.desc = NULL; | |
902 | } | |
903 | ||
904 | static inline void | |
905 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, | |
906 | struct ixgb_buffer *buffer_info) | |
907 | { | |
908 | struct pci_dev *pdev = adapter->pdev; | |
909 | if(buffer_info->dma) { | |
910 | pci_unmap_page(pdev, | |
911 | buffer_info->dma, | |
912 | buffer_info->length, | |
913 | PCI_DMA_TODEVICE); | |
914 | buffer_info->dma = 0; | |
915 | } | |
916 | if(buffer_info->skb) { | |
917 | dev_kfree_skb_any(buffer_info->skb); | |
918 | buffer_info->skb = NULL; | |
919 | } | |
920 | } | |
921 | ||
922 | /** | |
923 | * ixgb_clean_tx_ring - Free Tx Buffers | |
924 | * @adapter: board private structure | |
925 | **/ | |
926 | ||
927 | static void | |
928 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) | |
929 | { | |
930 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
931 | struct ixgb_buffer *buffer_info; | |
932 | unsigned long size; | |
933 | unsigned int i; | |
934 | ||
935 | /* Free all the Tx ring sk_buffs */ | |
936 | ||
937 | for(i = 0; i < tx_ring->count; i++) { | |
938 | buffer_info = &tx_ring->buffer_info[i]; | |
939 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
940 | } | |
941 | ||
942 | size = sizeof(struct ixgb_buffer) * tx_ring->count; | |
943 | memset(tx_ring->buffer_info, 0, size); | |
944 | ||
945 | /* Zero out the descriptor ring */ | |
946 | ||
947 | memset(tx_ring->desc, 0, tx_ring->size); | |
948 | ||
949 | tx_ring->next_to_use = 0; | |
950 | tx_ring->next_to_clean = 0; | |
951 | ||
952 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); | |
953 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); | |
954 | } | |
955 | ||
956 | /** | |
957 | * ixgb_free_rx_resources - Free Rx Resources | |
958 | * @adapter: board private structure | |
959 | * | |
960 | * Free all receive software resources | |
961 | **/ | |
962 | ||
963 | void | |
964 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) | |
965 | { | |
966 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
967 | struct pci_dev *pdev = adapter->pdev; | |
968 | ||
969 | ixgb_clean_rx_ring(adapter); | |
970 | ||
971 | vfree(rx_ring->buffer_info); | |
972 | rx_ring->buffer_info = NULL; | |
973 | ||
974 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
975 | ||
976 | rx_ring->desc = NULL; | |
977 | } | |
978 | ||
979 | /** | |
980 | * ixgb_clean_rx_ring - Free Rx Buffers | |
981 | * @adapter: board private structure | |
982 | **/ | |
983 | ||
984 | static void | |
985 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) | |
986 | { | |
987 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
988 | struct ixgb_buffer *buffer_info; | |
989 | struct pci_dev *pdev = adapter->pdev; | |
990 | unsigned long size; | |
991 | unsigned int i; | |
992 | ||
993 | /* Free all the Rx ring sk_buffs */ | |
994 | ||
995 | for(i = 0; i < rx_ring->count; i++) { | |
996 | buffer_info = &rx_ring->buffer_info[i]; | |
997 | if(buffer_info->skb) { | |
998 | ||
999 | pci_unmap_single(pdev, | |
1000 | buffer_info->dma, | |
1001 | buffer_info->length, | |
1002 | PCI_DMA_FROMDEVICE); | |
1003 | ||
1004 | dev_kfree_skb(buffer_info->skb); | |
1005 | ||
1006 | buffer_info->skb = NULL; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | size = sizeof(struct ixgb_buffer) * rx_ring->count; | |
1011 | memset(rx_ring->buffer_info, 0, size); | |
1012 | ||
1013 | /* Zero out the descriptor ring */ | |
1014 | ||
1015 | memset(rx_ring->desc, 0, rx_ring->size); | |
1016 | ||
1017 | rx_ring->next_to_clean = 0; | |
1018 | rx_ring->next_to_use = 0; | |
1019 | ||
1020 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); | |
1021 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); | |
1022 | } | |
1023 | ||
1024 | /** | |
1025 | * ixgb_set_mac - Change the Ethernet Address of the NIC | |
1026 | * @netdev: network interface device structure | |
1027 | * @p: pointer to an address structure | |
1028 | * | |
1029 | * Returns 0 on success, negative on failure | |
1030 | **/ | |
1031 | ||
1032 | static int | |
1033 | ixgb_set_mac(struct net_device *netdev, void *p) | |
1034 | { | |
1035 | struct ixgb_adapter *adapter = netdev->priv; | |
1036 | struct sockaddr *addr = p; | |
1037 | ||
1038 | if(!is_valid_ether_addr(addr->sa_data)) | |
1039 | return -EADDRNOTAVAIL; | |
1040 | ||
1041 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1042 | ||
1043 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | /** | |
1049 | * ixgb_set_multi - Multicast and Promiscuous mode set | |
1050 | * @netdev: network interface device structure | |
1051 | * | |
1052 | * The set_multi entry point is called whenever the multicast address | |
1053 | * list or the network interface flags are updated. This routine is | |
1054 | * responsible for configuring the hardware for proper multicast, | |
1055 | * promiscuous mode, and all-multi behavior. | |
1056 | **/ | |
1057 | ||
1058 | static void | |
1059 | ixgb_set_multi(struct net_device *netdev) | |
1060 | { | |
1061 | struct ixgb_adapter *adapter = netdev->priv; | |
1062 | struct ixgb_hw *hw = &adapter->hw; | |
1063 | struct dev_mc_list *mc_ptr; | |
1064 | uint32_t rctl; | |
1065 | int i; | |
1066 | ||
1067 | /* Check for Promiscuous and All Multicast modes */ | |
1068 | ||
1069 | rctl = IXGB_READ_REG(hw, RCTL); | |
1070 | ||
1071 | if(netdev->flags & IFF_PROMISC) { | |
1072 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1073 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1074 | rctl |= IXGB_RCTL_MPE; | |
1075 | rctl &= ~IXGB_RCTL_UPE; | |
1076 | } else { | |
1077 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1078 | } | |
1079 | ||
1080 | if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { | |
1081 | rctl |= IXGB_RCTL_MPE; | |
1082 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1083 | } else { | |
1084 | uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS]; | |
1085 | ||
1086 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1087 | ||
1088 | for(i = 0, mc_ptr = netdev->mc_list; mc_ptr; | |
1089 | i++, mc_ptr = mc_ptr->next) | |
1090 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], | |
1091 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); | |
1092 | ||
1093 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | /** | |
1098 | * ixgb_watchdog - Timer Call-back | |
1099 | * @data: pointer to netdev cast into an unsigned long | |
1100 | **/ | |
1101 | ||
1102 | static void | |
1103 | ixgb_watchdog(unsigned long data) | |
1104 | { | |
1105 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; | |
1106 | struct net_device *netdev = adapter->netdev; | |
1107 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
1108 | ||
1109 | ixgb_check_for_link(&adapter->hw); | |
1110 | ||
1111 | if (ixgb_check_for_bad_link(&adapter->hw)) { | |
1112 | /* force the reset path */ | |
1113 | netif_stop_queue(netdev); | |
1114 | } | |
1115 | ||
1116 | if(adapter->hw.link_up) { | |
1117 | if(!netif_carrier_ok(netdev)) { | |
1118 | printk(KERN_INFO "ixgb: %s NIC Link is Up %d Mbps %s\n", | |
1119 | netdev->name, 10000, "Full Duplex"); | |
1120 | adapter->link_speed = 10000; | |
1121 | adapter->link_duplex = FULL_DUPLEX; | |
1122 | netif_carrier_on(netdev); | |
1123 | netif_wake_queue(netdev); | |
1124 | } | |
1125 | } else { | |
1126 | if(netif_carrier_ok(netdev)) { | |
1127 | adapter->link_speed = 0; | |
1128 | adapter->link_duplex = 0; | |
1129 | printk(KERN_INFO | |
1130 | "ixgb: %s NIC Link is Down\n", | |
1131 | netdev->name); | |
1132 | netif_carrier_off(netdev); | |
1133 | netif_stop_queue(netdev); | |
1134 | ||
1135 | } | |
1136 | } | |
1137 | ||
1138 | ixgb_update_stats(adapter); | |
1139 | ||
1140 | if(!netif_carrier_ok(netdev)) { | |
1141 | if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1142 | /* We've lost link, so the controller stops DMA, | |
1143 | * but we've got queued Tx work that's never going | |
1144 | * to get done, so reset controller to flush Tx. | |
1145 | * (Do the reset outside of interrupt context). */ | |
1146 | schedule_work(&adapter->tx_timeout_task); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | /* Force detection of hung controller every watchdog period */ | |
1151 | adapter->detect_tx_hung = TRUE; | |
1152 | ||
1153 | /* generate an interrupt to force clean up of any stragglers */ | |
1154 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); | |
1155 | ||
1156 | /* Reset the timer */ | |
1157 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1158 | } | |
1159 | ||
1160 | #define IXGB_TX_FLAGS_CSUM 0x00000001 | |
1161 | #define IXGB_TX_FLAGS_VLAN 0x00000002 | |
1162 | #define IXGB_TX_FLAGS_TSO 0x00000004 | |
1163 | ||
1164 | static inline int | |
1165 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) | |
1166 | { | |
1167 | #ifdef NETIF_F_TSO | |
1168 | struct ixgb_context_desc *context_desc; | |
1169 | unsigned int i; | |
1170 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; | |
1171 | uint16_t ipcse, tucse, mss; | |
1172 | int err; | |
1173 | ||
1174 | if(likely(skb_shinfo(skb)->tso_size)) { | |
1175 | if (skb_header_cloned(skb)) { | |
1176 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1177 | if (err) | |
1178 | return err; | |
1179 | } | |
1180 | ||
1181 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
1182 | mss = skb_shinfo(skb)->tso_size; | |
1183 | skb->nh.iph->tot_len = 0; | |
1184 | skb->nh.iph->check = 0; | |
1185 | skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1186 | skb->nh.iph->daddr, | |
1187 | 0, IPPROTO_TCP, 0); | |
1188 | ipcss = skb->nh.raw - skb->data; | |
1189 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1190 | ipcse = skb->h.raw - skb->data - 1; | |
1191 | tucss = skb->h.raw - skb->data; | |
1192 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1193 | tucse = 0; | |
1194 | ||
1195 | i = adapter->tx_ring.next_to_use; | |
1196 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
1197 | ||
1198 | context_desc->ipcss = ipcss; | |
1199 | context_desc->ipcso = ipcso; | |
1200 | context_desc->ipcse = cpu_to_le16(ipcse); | |
1201 | context_desc->tucss = tucss; | |
1202 | context_desc->tucso = tucso; | |
1203 | context_desc->tucse = cpu_to_le16(tucse); | |
1204 | context_desc->mss = cpu_to_le16(mss); | |
1205 | context_desc->hdr_len = hdr_len; | |
1206 | context_desc->status = 0; | |
1207 | context_desc->cmd_type_len = cpu_to_le32( | |
1208 | IXGB_CONTEXT_DESC_TYPE | |
1209 | | IXGB_CONTEXT_DESC_CMD_TSE | |
1210 | | IXGB_CONTEXT_DESC_CMD_IP | |
1211 | | IXGB_CONTEXT_DESC_CMD_TCP | |
1da177e4 LT |
1212 | | IXGB_CONTEXT_DESC_CMD_IDE |
1213 | | (skb->len - (hdr_len))); | |
1214 | ||
06c2f9ec | 1215 | |
1da177e4 LT |
1216 | if(++i == adapter->tx_ring.count) i = 0; |
1217 | adapter->tx_ring.next_to_use = i; | |
1218 | ||
1219 | return 1; | |
1220 | } | |
1221 | #endif | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static inline boolean_t | |
1227 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) | |
1228 | { | |
1229 | struct ixgb_context_desc *context_desc; | |
1230 | unsigned int i; | |
1231 | uint8_t css, cso; | |
1232 | ||
1233 | if(likely(skb->ip_summed == CHECKSUM_HW)) { | |
1234 | css = skb->h.raw - skb->data; | |
1235 | cso = (skb->h.raw + skb->csum) - skb->data; | |
1236 | ||
1237 | i = adapter->tx_ring.next_to_use; | |
1238 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
1239 | ||
1240 | context_desc->tucss = css; | |
1241 | context_desc->tucso = cso; | |
1242 | context_desc->tucse = 0; | |
1243 | /* zero out any previously existing data in one instruction */ | |
1244 | *(uint32_t *)&(context_desc->ipcss) = 0; | |
1245 | context_desc->status = 0; | |
1246 | context_desc->hdr_len = 0; | |
1247 | context_desc->mss = 0; | |
1248 | context_desc->cmd_type_len = | |
1249 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE | |
06c2f9ec | 1250 | | IXGB_TX_DESC_CMD_IDE); |
1da177e4 LT |
1251 | |
1252 | if(++i == adapter->tx_ring.count) i = 0; | |
1253 | adapter->tx_ring.next_to_use = i; | |
1254 | ||
1255 | return TRUE; | |
1256 | } | |
1257 | ||
1258 | return FALSE; | |
1259 | } | |
1260 | ||
1261 | #define IXGB_MAX_TXD_PWR 14 | |
1262 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) | |
1263 | ||
1264 | static inline int | |
1265 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, | |
1266 | unsigned int first) | |
1267 | { | |
1268 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1269 | struct ixgb_buffer *buffer_info; | |
1270 | int len = skb->len; | |
1271 | unsigned int offset = 0, size, count = 0, i; | |
1272 | ||
1273 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
1274 | unsigned int f; | |
1275 | len -= skb->data_len; | |
1276 | ||
1277 | i = tx_ring->next_to_use; | |
1278 | ||
1279 | while(len) { | |
1280 | buffer_info = &tx_ring->buffer_info[i]; | |
1281 | size = min(len, IXGB_MAX_JUMBO_FRAME_SIZE); | |
1282 | buffer_info->length = size; | |
1283 | buffer_info->dma = | |
1284 | pci_map_single(adapter->pdev, | |
1285 | skb->data + offset, | |
1286 | size, | |
1287 | PCI_DMA_TODEVICE); | |
1288 | buffer_info->time_stamp = jiffies; | |
1289 | ||
1290 | len -= size; | |
1291 | offset += size; | |
1292 | count++; | |
1293 | if(++i == tx_ring->count) i = 0; | |
1294 | } | |
1295 | ||
1296 | for(f = 0; f < nr_frags; f++) { | |
1297 | struct skb_frag_struct *frag; | |
1298 | ||
1299 | frag = &skb_shinfo(skb)->frags[f]; | |
1300 | len = frag->size; | |
1301 | offset = 0; | |
1302 | ||
1303 | while(len) { | |
1304 | buffer_info = &tx_ring->buffer_info[i]; | |
1305 | size = min(len, IXGB_MAX_JUMBO_FRAME_SIZE); | |
1306 | buffer_info->length = size; | |
1307 | buffer_info->dma = | |
1308 | pci_map_page(adapter->pdev, | |
1309 | frag->page, | |
1310 | frag->page_offset + offset, | |
1311 | size, | |
1312 | PCI_DMA_TODEVICE); | |
1313 | buffer_info->time_stamp = jiffies; | |
1314 | ||
1315 | len -= size; | |
1316 | offset += size; | |
1317 | count++; | |
1318 | if(++i == tx_ring->count) i = 0; | |
1319 | } | |
1320 | } | |
1321 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1322 | tx_ring->buffer_info[i].skb = skb; | |
1323 | tx_ring->buffer_info[first].next_to_watch = i; | |
1324 | ||
1325 | return count; | |
1326 | } | |
1327 | ||
1328 | static inline void | |
1329 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) | |
1330 | { | |
1331 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1332 | struct ixgb_tx_desc *tx_desc = NULL; | |
1333 | struct ixgb_buffer *buffer_info; | |
1334 | uint32_t cmd_type_len = adapter->tx_cmd_type; | |
1335 | uint8_t status = 0; | |
1336 | uint8_t popts = 0; | |
1337 | unsigned int i; | |
1338 | ||
1339 | if(tx_flags & IXGB_TX_FLAGS_TSO) { | |
1340 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; | |
1341 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); | |
1342 | } | |
1343 | ||
1344 | if(tx_flags & IXGB_TX_FLAGS_CSUM) | |
1345 | popts |= IXGB_TX_DESC_POPTS_TXSM; | |
1346 | ||
1347 | if(tx_flags & IXGB_TX_FLAGS_VLAN) { | |
1348 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; | |
1349 | } | |
1350 | ||
1351 | i = tx_ring->next_to_use; | |
1352 | ||
1353 | while(count--) { | |
1354 | buffer_info = &tx_ring->buffer_info[i]; | |
1355 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1356 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
1357 | tx_desc->cmd_type_len = | |
1358 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
1359 | tx_desc->status = status; | |
1360 | tx_desc->popts = popts; | |
1361 | tx_desc->vlan = cpu_to_le16(vlan_id); | |
1362 | ||
1363 | if(++i == tx_ring->count) i = 0; | |
1364 | } | |
1365 | ||
1366 | tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP | |
1367 | | IXGB_TX_DESC_CMD_RS ); | |
1368 | ||
1369 | /* Force memory writes to complete before letting h/w | |
1370 | * know there are new descriptors to fetch. (Only | |
1371 | * applicable for weak-ordered memory model archs, | |
1372 | * such as IA-64). */ | |
1373 | wmb(); | |
1374 | ||
1375 | tx_ring->next_to_use = i; | |
1376 | IXGB_WRITE_REG(&adapter->hw, TDT, i); | |
1377 | } | |
1378 | ||
1379 | /* Tx Descriptors needed, worst case */ | |
1380 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ | |
1381 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
1382 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \ | |
1383 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 | |
1384 | ||
1385 | static int | |
1386 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1387 | { | |
1388 | struct ixgb_adapter *adapter = netdev->priv; | |
1389 | unsigned int first; | |
1390 | unsigned int tx_flags = 0; | |
1391 | unsigned long flags; | |
1392 | int vlan_id = 0; | |
1393 | int tso; | |
1394 | ||
1395 | if(skb->len <= 0) { | |
1396 | dev_kfree_skb_any(skb); | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | spin_lock_irqsave(&adapter->tx_lock, flags); | |
1401 | if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) { | |
1402 | netif_stop_queue(netdev); | |
1403 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1404 | return 1; | |
1405 | } | |
1406 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1407 | ||
1408 | if(adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
1409 | tx_flags |= IXGB_TX_FLAGS_VLAN; | |
1410 | vlan_id = vlan_tx_tag_get(skb); | |
1411 | } | |
1412 | ||
1413 | first = adapter->tx_ring.next_to_use; | |
1414 | ||
1415 | tso = ixgb_tso(adapter, skb); | |
1416 | if (tso < 0) { | |
1417 | dev_kfree_skb_any(skb); | |
1418 | return NETDEV_TX_OK; | |
1419 | } | |
1420 | ||
1421 | if (tso) | |
1422 | tx_flags |= IXGB_TX_FLAGS_TSO; | |
1423 | else if(ixgb_tx_csum(adapter, skb)) | |
1424 | tx_flags |= IXGB_TX_FLAGS_CSUM; | |
1425 | ||
1426 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, | |
1427 | tx_flags); | |
1428 | ||
1429 | netdev->trans_start = jiffies; | |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | /** | |
1435 | * ixgb_tx_timeout - Respond to a Tx Hang | |
1436 | * @netdev: network interface device structure | |
1437 | **/ | |
1438 | ||
1439 | static void | |
1440 | ixgb_tx_timeout(struct net_device *netdev) | |
1441 | { | |
1442 | struct ixgb_adapter *adapter = netdev->priv; | |
1443 | ||
1444 | /* Do the reset outside of interrupt context */ | |
1445 | schedule_work(&adapter->tx_timeout_task); | |
1446 | } | |
1447 | ||
1448 | static void | |
1449 | ixgb_tx_timeout_task(struct net_device *netdev) | |
1450 | { | |
1451 | struct ixgb_adapter *adapter = netdev->priv; | |
1452 | ||
1453 | ixgb_down(adapter, TRUE); | |
1454 | ixgb_up(adapter); | |
1455 | } | |
1456 | ||
1457 | /** | |
1458 | * ixgb_get_stats - Get System Network Statistics | |
1459 | * @netdev: network interface device structure | |
1460 | * | |
1461 | * Returns the address of the device statistics structure. | |
1462 | * The statistics are actually updated from the timer callback. | |
1463 | **/ | |
1464 | ||
1465 | static struct net_device_stats * | |
1466 | ixgb_get_stats(struct net_device *netdev) | |
1467 | { | |
1468 | struct ixgb_adapter *adapter = netdev->priv; | |
1469 | ||
1470 | return &adapter->net_stats; | |
1471 | } | |
1472 | ||
1473 | /** | |
1474 | * ixgb_change_mtu - Change the Maximum Transfer Unit | |
1475 | * @netdev: network interface device structure | |
1476 | * @new_mtu: new value for maximum frame size | |
1477 | * | |
1478 | * Returns 0 on success, negative on failure | |
1479 | **/ | |
1480 | ||
1481 | static int | |
1482 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) | |
1483 | { | |
1484 | struct ixgb_adapter *adapter = netdev->priv; | |
1485 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1486 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1487 | ||
1488 | ||
1489 | if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) | |
1490 | || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { | |
1491 | IXGB_ERR("Invalid MTU setting\n"); | |
1492 | return -EINVAL; | |
1493 | } | |
1494 | ||
1495 | if((max_frame <= IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) | |
1496 | || (max_frame <= IXGB_RXBUFFER_2048)) { | |
1497 | adapter->rx_buffer_len = IXGB_RXBUFFER_2048; | |
1498 | ||
1499 | } else if(max_frame <= IXGB_RXBUFFER_4096) { | |
1500 | adapter->rx_buffer_len = IXGB_RXBUFFER_4096; | |
1501 | ||
1502 | } else if(max_frame <= IXGB_RXBUFFER_8192) { | |
1503 | adapter->rx_buffer_len = IXGB_RXBUFFER_8192; | |
1504 | ||
1505 | } else { | |
1506 | adapter->rx_buffer_len = IXGB_RXBUFFER_16384; | |
1507 | } | |
1508 | ||
1509 | netdev->mtu = new_mtu; | |
1510 | ||
1511 | if(old_max_frame != max_frame && netif_running(netdev)) { | |
1512 | ||
1513 | ixgb_down(adapter, TRUE); | |
1514 | ixgb_up(adapter); | |
1515 | } | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | /** | |
1521 | * ixgb_update_stats - Update the board statistics counters. | |
1522 | * @adapter: board private structure | |
1523 | **/ | |
1524 | ||
1525 | void | |
1526 | ixgb_update_stats(struct ixgb_adapter *adapter) | |
1527 | { | |
5633684d MC |
1528 | struct net_device *netdev = adapter->netdev; |
1529 | ||
1530 | if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || | |
1531 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { | |
1532 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); | |
1533 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); | |
1534 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); | |
1535 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; | |
1536 | ||
1537 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); | |
1538 | /* fix up multicast stats by removing broadcasts */ | |
1539 | multi -= bcast; | |
1540 | ||
1541 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); | |
1542 | adapter->stats.mprch += (multi >> 32); | |
1543 | adapter->stats.bprcl += bcast_l; | |
1544 | adapter->stats.bprch += bcast_h; | |
1545 | } else { | |
1546 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); | |
1547 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); | |
1548 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); | |
1549 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); | |
1550 | } | |
1da177e4 LT |
1551 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
1552 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); | |
1553 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); | |
1554 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); | |
1da177e4 LT |
1555 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
1556 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); | |
1557 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); | |
1558 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); | |
1559 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); | |
1560 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); | |
1561 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); | |
1562 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); | |
1563 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); | |
1564 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); | |
1565 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); | |
1566 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); | |
1567 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); | |
1568 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); | |
1569 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); | |
1570 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); | |
1571 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); | |
1572 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); | |
1573 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); | |
1574 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); | |
1575 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); | |
1576 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); | |
1577 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); | |
1578 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); | |
1579 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); | |
1580 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); | |
1581 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); | |
1582 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); | |
1583 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); | |
1584 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); | |
1585 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); | |
1586 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); | |
1587 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); | |
1588 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); | |
1589 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); | |
1590 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); | |
1591 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); | |
1592 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); | |
1593 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); | |
1594 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); | |
1595 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); | |
1596 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); | |
1597 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); | |
1598 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); | |
1599 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); | |
1600 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); | |
1601 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); | |
1602 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); | |
1603 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); | |
1604 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); | |
1605 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); | |
1606 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); | |
1607 | ||
1608 | /* Fill out the OS statistics structure */ | |
1609 | ||
1610 | adapter->net_stats.rx_packets = adapter->stats.gprcl; | |
1611 | adapter->net_stats.tx_packets = adapter->stats.gptcl; | |
1612 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
1613 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
1614 | adapter->net_stats.multicast = adapter->stats.mprcl; | |
1615 | adapter->net_stats.collisions = 0; | |
1616 | ||
1617 | /* ignore RLEC as it reports errors for padded (<64bytes) frames | |
1618 | * with a length in the type/len field */ | |
1619 | adapter->net_stats.rx_errors = | |
1620 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + | |
1621 | adapter->stats.ruc + | |
1622 | adapter->stats.roc /*+ adapter->stats.rlec */ + | |
1623 | adapter->stats.icbc + | |
1624 | adapter->stats.ecbc + adapter->stats.mpc; | |
1625 | ||
1626 | adapter->net_stats.rx_dropped = adapter->stats.mpc; | |
1627 | ||
1628 | /* see above | |
1629 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
1630 | */ | |
1631 | ||
1632 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
1633 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
1634 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
1635 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; | |
1636 | ||
1637 | adapter->net_stats.tx_errors = 0; | |
1638 | adapter->net_stats.rx_frame_errors = 0; | |
1639 | adapter->net_stats.tx_aborted_errors = 0; | |
1640 | adapter->net_stats.tx_carrier_errors = 0; | |
1641 | adapter->net_stats.tx_fifo_errors = 0; | |
1642 | adapter->net_stats.tx_heartbeat_errors = 0; | |
1643 | adapter->net_stats.tx_window_errors = 0; | |
1644 | } | |
1645 | ||
1646 | #define IXGB_MAX_INTR 10 | |
1647 | /** | |
1648 | * ixgb_intr - Interrupt Handler | |
1649 | * @irq: interrupt number | |
1650 | * @data: pointer to a network interface device structure | |
1651 | * @pt_regs: CPU registers structure | |
1652 | **/ | |
1653 | ||
1654 | static irqreturn_t | |
1655 | ixgb_intr(int irq, void *data, struct pt_regs *regs) | |
1656 | { | |
1657 | struct net_device *netdev = data; | |
1658 | struct ixgb_adapter *adapter = netdev->priv; | |
1659 | struct ixgb_hw *hw = &adapter->hw; | |
1660 | uint32_t icr = IXGB_READ_REG(hw, ICR); | |
1661 | #ifndef CONFIG_IXGB_NAPI | |
1662 | unsigned int i; | |
1663 | #endif | |
1664 | ||
1665 | if(unlikely(!icr)) | |
1666 | return IRQ_NONE; /* Not our interrupt */ | |
1667 | ||
1668 | if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) { | |
1669 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1670 | } | |
1671 | ||
1672 | #ifdef CONFIG_IXGB_NAPI | |
1673 | if(netif_rx_schedule_prep(netdev)) { | |
1674 | ||
1675 | /* Disable interrupts and register for poll. The flush | |
1676 | of the posted write is intentionally left out. | |
1677 | */ | |
1678 | ||
1679 | atomic_inc(&adapter->irq_sem); | |
1680 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); | |
1681 | __netif_rx_schedule(netdev); | |
1682 | } | |
1683 | #else | |
1684 | /* yes, that is actually a & and it is meant to make sure that | |
1685 | * every pass through this for loop checks both receive and | |
1686 | * transmit queues for completed descriptors, intended to | |
1687 | * avoid starvation issues and assist tx/rx fairness. */ | |
1688 | for(i = 0; i < IXGB_MAX_INTR; i++) | |
1689 | if(!ixgb_clean_rx_irq(adapter) & | |
1690 | !ixgb_clean_tx_irq(adapter)) | |
1691 | break; | |
1692 | #endif | |
1693 | return IRQ_HANDLED; | |
1694 | } | |
1695 | ||
1696 | #ifdef CONFIG_IXGB_NAPI | |
1697 | /** | |
1698 | * ixgb_clean - NAPI Rx polling callback | |
1699 | * @adapter: board private structure | |
1700 | **/ | |
1701 | ||
1702 | static int | |
1703 | ixgb_clean(struct net_device *netdev, int *budget) | |
1704 | { | |
1705 | struct ixgb_adapter *adapter = netdev->priv; | |
1706 | int work_to_do = min(*budget, netdev->quota); | |
1707 | int tx_cleaned; | |
1708 | int work_done = 0; | |
1709 | ||
1710 | tx_cleaned = ixgb_clean_tx_irq(adapter); | |
1711 | ixgb_clean_rx_irq(adapter, &work_done, work_to_do); | |
1712 | ||
1713 | *budget -= work_done; | |
1714 | netdev->quota -= work_done; | |
1715 | ||
1716 | /* if no Tx and not enough Rx work done, exit the polling mode */ | |
1717 | if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { | |
1718 | netif_rx_complete(netdev); | |
1719 | ixgb_irq_enable(adapter); | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | return 1; | |
1724 | } | |
1725 | #endif | |
1726 | ||
1727 | /** | |
1728 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes | |
1729 | * @adapter: board private structure | |
1730 | **/ | |
1731 | ||
1732 | static boolean_t | |
1733 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) | |
1734 | { | |
1735 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1736 | struct net_device *netdev = adapter->netdev; | |
1737 | struct ixgb_tx_desc *tx_desc, *eop_desc; | |
1738 | struct ixgb_buffer *buffer_info; | |
1739 | unsigned int i, eop; | |
1740 | boolean_t cleaned = FALSE; | |
1741 | ||
1742 | i = tx_ring->next_to_clean; | |
1743 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1744 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1745 | ||
1746 | while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) { | |
1747 | ||
1748 | for(cleaned = FALSE; !cleaned; ) { | |
1749 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1750 | buffer_info = &tx_ring->buffer_info[i]; | |
1751 | ||
1752 | if (tx_desc->popts | |
1753 | & (IXGB_TX_DESC_POPTS_TXSM | | |
1754 | IXGB_TX_DESC_POPTS_IXSM)) | |
1755 | adapter->hw_csum_tx_good++; | |
1756 | ||
1757 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
1758 | ||
1759 | *(uint32_t *)&(tx_desc->status) = 0; | |
1760 | ||
1761 | cleaned = (i == eop); | |
1762 | if(++i == tx_ring->count) i = 0; | |
1763 | } | |
1764 | ||
1765 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1766 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1767 | } | |
1768 | ||
1769 | tx_ring->next_to_clean = i; | |
1770 | ||
1771 | spin_lock(&adapter->tx_lock); | |
1772 | if(cleaned && netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && | |
1773 | (IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE)) { | |
1774 | ||
1775 | netif_wake_queue(netdev); | |
1776 | } | |
1777 | spin_unlock(&adapter->tx_lock); | |
1778 | ||
1779 | if(adapter->detect_tx_hung) { | |
1780 | /* detect a transmit hang in hardware, this serializes the | |
1781 | * check with the clearing of time_stamp and movement of i */ | |
1782 | adapter->detect_tx_hung = FALSE; | |
1783 | if(tx_ring->buffer_info[i].dma && | |
1784 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) | |
1785 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & | |
1786 | IXGB_STATUS_TXOFF)) | |
1787 | netif_stop_queue(netdev); | |
1788 | } | |
1789 | ||
1790 | return cleaned; | |
1791 | } | |
1792 | ||
1793 | /** | |
1794 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. | |
1795 | * @adapter: board private structure | |
1796 | * @rx_desc: receive descriptor | |
1797 | * @sk_buff: socket buffer with received data | |
1798 | **/ | |
1799 | ||
1800 | static inline void | |
1801 | ixgb_rx_checksum(struct ixgb_adapter *adapter, | |
1802 | struct ixgb_rx_desc *rx_desc, | |
1803 | struct sk_buff *skb) | |
1804 | { | |
1805 | /* Ignore Checksum bit is set OR | |
1806 | * TCP Checksum has not been calculated | |
1807 | */ | |
1808 | if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || | |
1809 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { | |
1810 | skb->ip_summed = CHECKSUM_NONE; | |
1811 | return; | |
1812 | } | |
1813 | ||
1814 | /* At this point we know the hardware did the TCP checksum */ | |
1815 | /* now look at the TCP checksum error bit */ | |
1816 | if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { | |
1817 | /* let the stack verify checksum errors */ | |
1818 | skb->ip_summed = CHECKSUM_NONE; | |
1819 | adapter->hw_csum_rx_error++; | |
1820 | } else { | |
1821 | /* TCP checksum is good */ | |
1822 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1823 | adapter->hw_csum_rx_good++; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | /** | |
1828 | * ixgb_clean_rx_irq - Send received data up the network stack, | |
1829 | * @adapter: board private structure | |
1830 | **/ | |
1831 | ||
1832 | static boolean_t | |
1833 | #ifdef CONFIG_IXGB_NAPI | |
1834 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) | |
1835 | #else | |
1836 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter) | |
1837 | #endif | |
1838 | { | |
1839 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1840 | struct net_device *netdev = adapter->netdev; | |
1841 | struct pci_dev *pdev = adapter->pdev; | |
1842 | struct ixgb_rx_desc *rx_desc, *next_rxd; | |
1843 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; | |
1844 | struct sk_buff *skb, *next_skb; | |
1845 | uint32_t length; | |
1846 | unsigned int i, j; | |
1847 | boolean_t cleaned = FALSE; | |
1848 | ||
1849 | i = rx_ring->next_to_clean; | |
1850 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1851 | buffer_info = &rx_ring->buffer_info[i]; | |
1852 | ||
1853 | while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) { | |
1854 | ||
1855 | #ifdef CONFIG_IXGB_NAPI | |
1856 | if(*work_done >= work_to_do) | |
1857 | break; | |
1858 | ||
1859 | (*work_done)++; | |
1860 | #endif | |
1861 | skb = buffer_info->skb; | |
1862 | prefetch(skb->data); | |
1863 | ||
1864 | if(++i == rx_ring->count) i = 0; | |
1865 | next_rxd = IXGB_RX_DESC(*rx_ring, i); | |
1866 | prefetch(next_rxd); | |
1867 | ||
1868 | if((j = i + 1) == rx_ring->count) j = 0; | |
1869 | next2_buffer = &rx_ring->buffer_info[j]; | |
1870 | prefetch(next2_buffer); | |
1871 | ||
1872 | next_buffer = &rx_ring->buffer_info[i]; | |
1873 | next_skb = next_buffer->skb; | |
1874 | prefetch(next_skb); | |
1875 | ||
1876 | ||
1877 | cleaned = TRUE; | |
1878 | ||
1879 | pci_unmap_single(pdev, | |
1880 | buffer_info->dma, | |
1881 | buffer_info->length, | |
1882 | PCI_DMA_FROMDEVICE); | |
1883 | ||
1884 | length = le16_to_cpu(rx_desc->length); | |
1885 | ||
1886 | if(unlikely(!(rx_desc->status & IXGB_RX_DESC_STATUS_EOP))) { | |
1887 | ||
1888 | /* All receives must fit into a single buffer */ | |
1889 | ||
1890 | IXGB_DBG("Receive packet consumed multiple buffers " | |
1891 | "length<%x>\n", length); | |
1892 | ||
1893 | dev_kfree_skb_irq(skb); | |
1894 | rx_desc->status = 0; | |
1895 | buffer_info->skb = NULL; | |
1896 | ||
1897 | rx_desc = next_rxd; | |
1898 | buffer_info = next_buffer; | |
1899 | continue; | |
1900 | } | |
1901 | ||
1902 | if (unlikely(rx_desc->errors | |
1903 | & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | |
1904 | | IXGB_RX_DESC_ERRORS_P | | |
1905 | IXGB_RX_DESC_ERRORS_RXE))) { | |
1906 | ||
1907 | dev_kfree_skb_irq(skb); | |
1908 | rx_desc->status = 0; | |
1909 | buffer_info->skb = NULL; | |
1910 | ||
1911 | rx_desc = next_rxd; | |
1912 | buffer_info = next_buffer; | |
1913 | continue; | |
1914 | } | |
1915 | ||
1916 | /* Good Receive */ | |
1917 | skb_put(skb, length); | |
1918 | ||
1919 | /* Receive Checksum Offload */ | |
1920 | ixgb_rx_checksum(adapter, rx_desc, skb); | |
1921 | ||
1922 | skb->protocol = eth_type_trans(skb, netdev); | |
1923 | #ifdef CONFIG_IXGB_NAPI | |
1924 | if(adapter->vlgrp && (rx_desc->status & IXGB_RX_DESC_STATUS_VP)) { | |
1925 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
1926 | le16_to_cpu(rx_desc->special) & | |
1927 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
1928 | } else { | |
1929 | netif_receive_skb(skb); | |
1930 | } | |
1931 | #else /* CONFIG_IXGB_NAPI */ | |
1932 | if(adapter->vlgrp && (rx_desc->status & IXGB_RX_DESC_STATUS_VP)) { | |
1933 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
1934 | le16_to_cpu(rx_desc->special) & | |
1935 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
1936 | } else { | |
1937 | netif_rx(skb); | |
1938 | } | |
1939 | #endif /* CONFIG_IXGB_NAPI */ | |
1940 | netdev->last_rx = jiffies; | |
1941 | ||
1942 | rx_desc->status = 0; | |
1943 | buffer_info->skb = NULL; | |
1944 | ||
1945 | rx_desc = next_rxd; | |
1946 | buffer_info = next_buffer; | |
1947 | } | |
1948 | ||
1949 | rx_ring->next_to_clean = i; | |
1950 | ||
1951 | ixgb_alloc_rx_buffers(adapter); | |
1952 | ||
1953 | return cleaned; | |
1954 | } | |
1955 | ||
1956 | /** | |
1957 | * ixgb_alloc_rx_buffers - Replace used receive buffers | |
1958 | * @adapter: address of board private structure | |
1959 | **/ | |
1960 | ||
1961 | static void | |
1962 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) | |
1963 | { | |
1964 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1965 | struct net_device *netdev = adapter->netdev; | |
1966 | struct pci_dev *pdev = adapter->pdev; | |
1967 | struct ixgb_rx_desc *rx_desc; | |
1968 | struct ixgb_buffer *buffer_info; | |
1969 | struct sk_buff *skb; | |
1970 | unsigned int i; | |
1971 | int num_group_tail_writes; | |
1972 | long cleancount; | |
1973 | ||
1974 | i = rx_ring->next_to_use; | |
1975 | buffer_info = &rx_ring->buffer_info[i]; | |
1976 | cleancount = IXGB_DESC_UNUSED(rx_ring); | |
1977 | ||
1978 | num_group_tail_writes = IXGB_RX_BUFFER_WRITE; | |
1979 | ||
1980 | /* leave one descriptor unused */ | |
1981 | while(--cleancount > 0) { | |
1982 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1983 | ||
1984 | skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN); | |
1985 | ||
1986 | if(unlikely(!skb)) { | |
1987 | /* Better luck next round */ | |
1988 | break; | |
1989 | } | |
1990 | ||
1991 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
1992 | * this will result in a 16 byte aligned IP header after | |
1993 | * the 14 byte MAC header is removed | |
1994 | */ | |
1995 | skb_reserve(skb, NET_IP_ALIGN); | |
1996 | ||
1997 | skb->dev = netdev; | |
1998 | ||
1999 | buffer_info->skb = skb; | |
2000 | buffer_info->length = adapter->rx_buffer_len; | |
2001 | buffer_info->dma = | |
2002 | pci_map_single(pdev, | |
2003 | skb->data, | |
2004 | adapter->rx_buffer_len, | |
2005 | PCI_DMA_FROMDEVICE); | |
2006 | ||
2007 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
2008 | ||
2009 | if((i & ~(num_group_tail_writes- 1)) == i) { | |
2010 | /* Force memory writes to complete before letting h/w | |
2011 | * know there are new descriptors to fetch. (Only | |
2012 | * applicable for weak-ordered memory model archs, | |
2013 | * such as IA-64). */ | |
2014 | wmb(); | |
2015 | ||
2016 | IXGB_WRITE_REG(&adapter->hw, RDT, i); | |
2017 | } | |
2018 | ||
2019 | if(++i == rx_ring->count) i = 0; | |
2020 | buffer_info = &rx_ring->buffer_info[i]; | |
2021 | } | |
2022 | ||
2023 | rx_ring->next_to_use = i; | |
2024 | } | |
2025 | ||
2026 | /** | |
2027 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. | |
2028 | * | |
2029 | * @param netdev network interface device structure | |
2030 | * @param grp indicates to enable or disable tagging/stripping | |
2031 | **/ | |
2032 | static void | |
2033 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2034 | { | |
2035 | struct ixgb_adapter *adapter = netdev->priv; | |
2036 | uint32_t ctrl, rctl; | |
2037 | ||
2038 | ixgb_irq_disable(adapter); | |
2039 | adapter->vlgrp = grp; | |
2040 | ||
2041 | if(grp) { | |
2042 | /* enable VLAN tag insert/strip */ | |
2043 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2044 | ctrl |= IXGB_CTRL0_VME; | |
2045 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2046 | ||
2047 | /* enable VLAN receive filtering */ | |
2048 | ||
2049 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2050 | rctl |= IXGB_RCTL_VFE; | |
2051 | rctl &= ~IXGB_RCTL_CFIEN; | |
2052 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2053 | } else { | |
2054 | /* disable VLAN tag insert/strip */ | |
2055 | ||
2056 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2057 | ctrl &= ~IXGB_CTRL0_VME; | |
2058 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2059 | ||
2060 | /* disable VLAN filtering */ | |
2061 | ||
2062 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2063 | rctl &= ~IXGB_RCTL_VFE; | |
2064 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2065 | } | |
2066 | ||
2067 | ixgb_irq_enable(adapter); | |
2068 | } | |
2069 | ||
2070 | static void | |
2071 | ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
2072 | { | |
2073 | struct ixgb_adapter *adapter = netdev->priv; | |
2074 | uint32_t vfta, index; | |
2075 | ||
2076 | /* add VID to filter table */ | |
2077 | ||
2078 | index = (vid >> 5) & 0x7F; | |
2079 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2080 | vfta |= (1 << (vid & 0x1F)); | |
2081 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2082 | } | |
2083 | ||
2084 | static void | |
2085 | ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
2086 | { | |
2087 | struct ixgb_adapter *adapter = netdev->priv; | |
2088 | uint32_t vfta, index; | |
2089 | ||
2090 | ixgb_irq_disable(adapter); | |
2091 | ||
2092 | if(adapter->vlgrp) | |
2093 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
2094 | ||
2095 | ixgb_irq_enable(adapter); | |
2096 | ||
2097 | /* remove VID from filter table*/ | |
2098 | ||
2099 | index = (vid >> 5) & 0x7F; | |
2100 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2101 | vfta &= ~(1 << (vid & 0x1F)); | |
2102 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2103 | } | |
2104 | ||
2105 | static void | |
2106 | ixgb_restore_vlan(struct ixgb_adapter *adapter) | |
2107 | { | |
2108 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2109 | ||
2110 | if(adapter->vlgrp) { | |
2111 | uint16_t vid; | |
2112 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2113 | if(!adapter->vlgrp->vlan_devices[vid]) | |
2114 | continue; | |
2115 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); | |
2116 | } | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | /** | |
2121 | * ixgb_notify_reboot - handles OS notification of reboot event. | |
2122 | * @param nb notifier block, unused | |
2123 | * @param event Event being passed to driver to act upon | |
2124 | * @param p A pointer to our net device | |
2125 | **/ | |
2126 | static int | |
2127 | ixgb_notify_reboot(struct notifier_block *nb, unsigned long event, void *p) | |
2128 | { | |
2129 | struct pci_dev *pdev = NULL; | |
2130 | ||
2131 | switch(event) { | |
2132 | case SYS_DOWN: | |
2133 | case SYS_HALT: | |
2134 | case SYS_POWER_OFF: | |
2135 | while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) { | |
2136 | if (pci_dev_driver(pdev) == &ixgb_driver) | |
2137 | ixgb_suspend(pdev, 3); | |
2138 | } | |
2139 | } | |
2140 | return NOTIFY_DONE; | |
2141 | } | |
2142 | ||
2143 | /** | |
2144 | * ixgb_suspend - driver suspend function called from notify. | |
2145 | * @param pdev pci driver structure used for passing to | |
2146 | * @param state power state to enter | |
2147 | **/ | |
2148 | static int | |
2149 | ixgb_suspend(struct pci_dev *pdev, uint32_t state) | |
2150 | { | |
2151 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2152 | struct ixgb_adapter *adapter = netdev->priv; | |
2153 | ||
2154 | netif_device_detach(netdev); | |
2155 | ||
2156 | if(netif_running(netdev)) | |
2157 | ixgb_down(adapter, TRUE); | |
2158 | ||
2159 | pci_save_state(pdev); | |
2160 | ||
2161 | state = (state > 0) ? 3 : 0; | |
2162 | pci_set_power_state(pdev, state); | |
2163 | msec_delay(200); | |
2164 | ||
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2169 | /* | |
2170 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2171 | * without having to re-enable interrupts. It's not called while | |
2172 | * the interrupt routine is executing. | |
2173 | */ | |
2174 | ||
2175 | static void ixgb_netpoll(struct net_device *dev) | |
2176 | { | |
2177 | struct ixgb_adapter *adapter = dev->priv; | |
2178 | disable_irq(adapter->pdev->irq); | |
2179 | ixgb_intr(adapter->pdev->irq, dev, NULL); | |
2180 | enable_irq(adapter->pdev->irq); | |
2181 | } | |
2182 | #endif | |
2183 | ||
2184 | /* ixgb_main.c */ |