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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
4 | Copyright(c) 1999 - 2004 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 "e1000.h" | |
30 | ||
31 | /* Change Log | |
32 | * 5.3.12 6/7/04 | |
33 | * - kcompat NETIF_MSG for older kernels (2.4.9) <sean.p.mcdermott@intel.com> | |
34 | * - if_mii support and associated kcompat for older kernels | |
35 | * - More errlogging support from Jon Mason <jonmason@us.ibm.com> | |
36 | * - Fix TSO issues on PPC64 machines -- Jon Mason <jonmason@us.ibm.com> | |
37 | * | |
38 | * 5.7.1 12/16/04 | |
39 | * - Resurrect 82547EI/GI related fix in e1000_intr to avoid deadlocks. This | |
40 | * fix was removed as it caused system instability. The suspected cause of | |
41 | * this is the called to e1000_irq_disable in e1000_intr. Inlined the | |
42 | * required piece of e1000_irq_disable into e1000_intr - Anton Blanchard | |
43 | * 5.7.0 12/10/04 | |
44 | * - include fix to the condition that determines when to quit NAPI - Robert Olsson | |
45 | * - use netif_poll_{disable/enable} to synchronize between NAPI and i/f up/down | |
46 | * 5.6.5 11/01/04 | |
47 | * - Enabling NETIF_F_SG without checksum offload is illegal - | |
48 | John Mason <jdmason@us.ibm.com> | |
49 | * 5.6.3 10/26/04 | |
50 | * - Remove redundant initialization - Jamal Hadi | |
51 | * - Reset buffer_info->dma in tx resource cleanup logic | |
52 | * 5.6.2 10/12/04 | |
53 | * - Avoid filling tx_ring completely - shemminger@osdl.org | |
54 | * - Replace schedule_timeout() with msleep()/msleep_interruptible() - | |
55 | * nacc@us.ibm.com | |
56 | * - Sparse cleanup - shemminger@osdl.org | |
57 | * - Fix tx resource cleanup logic | |
58 | * - LLTX support - ak@suse.de and hadi@cyberus.ca | |
59 | */ | |
60 | ||
61 | char e1000_driver_name[] = "e1000"; | |
62 | char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; | |
63 | #ifndef CONFIG_E1000_NAPI | |
64 | #define DRIVERNAPI | |
65 | #else | |
66 | #define DRIVERNAPI "-NAPI" | |
67 | #endif | |
68 | #define DRV_VERSION "5.7.6-k2"DRIVERNAPI | |
69 | char e1000_driver_version[] = DRV_VERSION; | |
70 | char e1000_copyright[] = "Copyright (c) 1999-2004 Intel Corporation."; | |
71 | ||
72 | /* e1000_pci_tbl - PCI Device ID Table | |
73 | * | |
74 | * Last entry must be all 0s | |
75 | * | |
76 | * Macro expands to... | |
77 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
78 | */ | |
79 | static struct pci_device_id e1000_pci_tbl[] = { | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
87 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
90 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
91 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
92 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
93 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
94 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
95 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
96 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
97 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
98 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
99 | INTEL_E1000_ETHERNET_DEVICE(0x101D), | |
100 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
101 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
102 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
103 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
104 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
105 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
106 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
107 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
108 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
109 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
110 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
111 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
112 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
113 | /* required last entry */ | |
114 | {0,} | |
115 | }; | |
116 | ||
117 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
118 | ||
119 | int e1000_up(struct e1000_adapter *adapter); | |
120 | void e1000_down(struct e1000_adapter *adapter); | |
121 | void e1000_reset(struct e1000_adapter *adapter); | |
122 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
123 | int e1000_setup_tx_resources(struct e1000_adapter *adapter); | |
124 | int e1000_setup_rx_resources(struct e1000_adapter *adapter); | |
125 | void e1000_free_tx_resources(struct e1000_adapter *adapter); | |
126 | void e1000_free_rx_resources(struct e1000_adapter *adapter); | |
127 | void e1000_update_stats(struct e1000_adapter *adapter); | |
128 | ||
129 | /* Local Function Prototypes */ | |
130 | ||
131 | static int e1000_init_module(void); | |
132 | static void e1000_exit_module(void); | |
133 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
134 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
135 | static int e1000_sw_init(struct e1000_adapter *adapter); | |
136 | static int e1000_open(struct net_device *netdev); | |
137 | static int e1000_close(struct net_device *netdev); | |
138 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
139 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
140 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
141 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter); | |
142 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter); | |
143 | static void e1000_set_multi(struct net_device *netdev); | |
144 | static void e1000_update_phy_info(unsigned long data); | |
145 | static void e1000_watchdog(unsigned long data); | |
146 | static void e1000_watchdog_task(struct e1000_adapter *adapter); | |
147 | static void e1000_82547_tx_fifo_stall(unsigned long data); | |
148 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
149 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
150 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
151 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
152 | static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); | |
153 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter); | |
154 | #ifdef CONFIG_E1000_NAPI | |
155 | static int e1000_clean(struct net_device *netdev, int *budget); | |
156 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
157 | int *work_done, int work_to_do); | |
158 | #else | |
159 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter); | |
160 | #endif | |
161 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter); | |
162 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); | |
163 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
164 | int cmd); | |
165 | void e1000_set_ethtool_ops(struct net_device *netdev); | |
166 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); | |
167 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
168 | static void e1000_tx_timeout(struct net_device *dev); | |
169 | static void e1000_tx_timeout_task(struct net_device *dev); | |
170 | static void e1000_smartspeed(struct e1000_adapter *adapter); | |
171 | static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, | |
172 | struct sk_buff *skb); | |
173 | ||
174 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
175 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
176 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
177 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
178 | ||
179 | static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr); | |
180 | static int e1000_suspend(struct pci_dev *pdev, uint32_t state); | |
181 | #ifdef CONFIG_PM | |
182 | static int e1000_resume(struct pci_dev *pdev); | |
183 | #endif | |
184 | ||
185 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
186 | /* for netdump / net console */ | |
187 | static void e1000_netpoll (struct net_device *netdev); | |
188 | #endif | |
189 | ||
190 | struct notifier_block e1000_notifier_reboot = { | |
191 | .notifier_call = e1000_notify_reboot, | |
192 | .next = NULL, | |
193 | .priority = 0 | |
194 | }; | |
195 | ||
196 | /* Exported from other modules */ | |
197 | ||
198 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
199 | ||
200 | static struct pci_driver e1000_driver = { | |
201 | .name = e1000_driver_name, | |
202 | .id_table = e1000_pci_tbl, | |
203 | .probe = e1000_probe, | |
204 | .remove = __devexit_p(e1000_remove), | |
205 | /* Power Managment Hooks */ | |
206 | #ifdef CONFIG_PM | |
207 | .suspend = e1000_suspend, | |
208 | .resume = e1000_resume | |
209 | #endif | |
210 | }; | |
211 | ||
212 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
213 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
214 | MODULE_LICENSE("GPL"); | |
215 | MODULE_VERSION(DRV_VERSION); | |
216 | ||
217 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
218 | module_param(debug, int, 0); | |
219 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
220 | ||
221 | /** | |
222 | * e1000_init_module - Driver Registration Routine | |
223 | * | |
224 | * e1000_init_module is the first routine called when the driver is | |
225 | * loaded. All it does is register with the PCI subsystem. | |
226 | **/ | |
227 | ||
228 | static int __init | |
229 | e1000_init_module(void) | |
230 | { | |
231 | int ret; | |
232 | printk(KERN_INFO "%s - version %s\n", | |
233 | e1000_driver_string, e1000_driver_version); | |
234 | ||
235 | printk(KERN_INFO "%s\n", e1000_copyright); | |
236 | ||
237 | ret = pci_module_init(&e1000_driver); | |
238 | if(ret >= 0) { | |
239 | register_reboot_notifier(&e1000_notifier_reboot); | |
240 | } | |
241 | return ret; | |
242 | } | |
243 | ||
244 | module_init(e1000_init_module); | |
245 | ||
246 | /** | |
247 | * e1000_exit_module - Driver Exit Cleanup Routine | |
248 | * | |
249 | * e1000_exit_module is called just before the driver is removed | |
250 | * from memory. | |
251 | **/ | |
252 | ||
253 | static void __exit | |
254 | e1000_exit_module(void) | |
255 | { | |
256 | unregister_reboot_notifier(&e1000_notifier_reboot); | |
257 | pci_unregister_driver(&e1000_driver); | |
258 | } | |
259 | ||
260 | module_exit(e1000_exit_module); | |
261 | ||
262 | /** | |
263 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
264 | * @adapter: board private structure | |
265 | **/ | |
266 | ||
267 | static inline void | |
268 | e1000_irq_disable(struct e1000_adapter *adapter) | |
269 | { | |
270 | atomic_inc(&adapter->irq_sem); | |
271 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
272 | E1000_WRITE_FLUSH(&adapter->hw); | |
273 | synchronize_irq(adapter->pdev->irq); | |
274 | } | |
275 | ||
276 | /** | |
277 | * e1000_irq_enable - Enable default interrupt generation settings | |
278 | * @adapter: board private structure | |
279 | **/ | |
280 | ||
281 | static inline void | |
282 | e1000_irq_enable(struct e1000_adapter *adapter) | |
283 | { | |
284 | if(likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
285 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); | |
286 | E1000_WRITE_FLUSH(&adapter->hw); | |
287 | } | |
288 | } | |
289 | ||
290 | int | |
291 | e1000_up(struct e1000_adapter *adapter) | |
292 | { | |
293 | struct net_device *netdev = adapter->netdev; | |
294 | int err; | |
295 | ||
296 | /* hardware has been reset, we need to reload some things */ | |
297 | ||
298 | /* Reset the PHY if it was previously powered down */ | |
299 | if(adapter->hw.media_type == e1000_media_type_copper) { | |
300 | uint16_t mii_reg; | |
301 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
302 | if(mii_reg & MII_CR_POWER_DOWN) | |
303 | e1000_phy_reset(&adapter->hw); | |
304 | } | |
305 | ||
306 | e1000_set_multi(netdev); | |
307 | ||
308 | e1000_restore_vlan(adapter); | |
309 | ||
310 | e1000_configure_tx(adapter); | |
311 | e1000_setup_rctl(adapter); | |
312 | e1000_configure_rx(adapter); | |
313 | e1000_alloc_rx_buffers(adapter); | |
314 | ||
fa4f7ef3 MC |
315 | #ifdef CONFIG_PCI_MSI |
316 | if(adapter->hw.mac_type > e1000_82547_rev_2) { | |
317 | adapter->have_msi = TRUE; | |
318 | if((err = pci_enable_msi(adapter->pdev))) { | |
319 | DPRINTK(PROBE, ERR, | |
320 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
321 | adapter->have_msi = FALSE; | |
322 | } | |
323 | } | |
324 | #endif | |
1da177e4 LT |
325 | if((err = request_irq(adapter->pdev->irq, &e1000_intr, |
326 | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
327 | netdev->name, netdev))) | |
328 | return err; | |
329 | ||
330 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
331 | |
332 | #ifdef CONFIG_E1000_NAPI | |
333 | netif_poll_enable(netdev); | |
334 | #endif | |
5de55624 MC |
335 | e1000_irq_enable(adapter); |
336 | ||
1da177e4 LT |
337 | return 0; |
338 | } | |
339 | ||
340 | void | |
341 | e1000_down(struct e1000_adapter *adapter) | |
342 | { | |
343 | struct net_device *netdev = adapter->netdev; | |
344 | ||
345 | e1000_irq_disable(adapter); | |
346 | free_irq(adapter->pdev->irq, netdev); | |
fa4f7ef3 MC |
347 | #ifdef CONFIG_PCI_MSI |
348 | if(adapter->hw.mac_type > e1000_82547_rev_2 && | |
349 | adapter->have_msi == TRUE) | |
350 | pci_disable_msi(adapter->pdev); | |
351 | #endif | |
1da177e4 LT |
352 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
353 | del_timer_sync(&adapter->watchdog_timer); | |
354 | del_timer_sync(&adapter->phy_info_timer); | |
355 | ||
356 | #ifdef CONFIG_E1000_NAPI | |
357 | netif_poll_disable(netdev); | |
358 | #endif | |
359 | adapter->link_speed = 0; | |
360 | adapter->link_duplex = 0; | |
361 | netif_carrier_off(netdev); | |
362 | netif_stop_queue(netdev); | |
363 | ||
364 | e1000_reset(adapter); | |
365 | e1000_clean_tx_ring(adapter); | |
366 | e1000_clean_rx_ring(adapter); | |
367 | ||
368 | /* If WoL is not enabled | |
369 | * Power down the PHY so no link is implied when interface is down */ | |
370 | if(!adapter->wol && adapter->hw.media_type == e1000_media_type_copper) { | |
371 | uint16_t mii_reg; | |
372 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
373 | mii_reg |= MII_CR_POWER_DOWN; | |
374 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 375 | mdelay(1); |
1da177e4 LT |
376 | } |
377 | } | |
378 | ||
379 | void | |
380 | e1000_reset(struct e1000_adapter *adapter) | |
381 | { | |
382 | uint32_t pba; | |
383 | ||
384 | /* Repartition Pba for greater than 9k mtu | |
385 | * To take effect CTRL.RST is required. | |
386 | */ | |
387 | ||
388 | if(adapter->hw.mac_type < e1000_82547) { | |
389 | if(adapter->rx_buffer_len > E1000_RXBUFFER_8192) | |
390 | pba = E1000_PBA_40K; | |
391 | else | |
392 | pba = E1000_PBA_48K; | |
393 | } else { | |
394 | if(adapter->rx_buffer_len > E1000_RXBUFFER_8192) | |
395 | pba = E1000_PBA_22K; | |
396 | else | |
397 | pba = E1000_PBA_30K; | |
398 | adapter->tx_fifo_head = 0; | |
399 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
400 | adapter->tx_fifo_size = | |
401 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
402 | atomic_set(&adapter->tx_fifo_stall, 0); | |
403 | } | |
404 | E1000_WRITE_REG(&adapter->hw, PBA, pba); | |
405 | ||
406 | /* flow control settings */ | |
407 | adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) - | |
408 | E1000_FC_HIGH_DIFF; | |
409 | adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - | |
410 | E1000_FC_LOW_DIFF; | |
411 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
412 | adapter->hw.fc_send_xon = 1; | |
413 | adapter->hw.fc = adapter->hw.original_fc; | |
414 | ||
415 | e1000_reset_hw(&adapter->hw); | |
416 | if(adapter->hw.mac_type >= e1000_82544) | |
417 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
418 | if(e1000_init_hw(&adapter->hw)) | |
419 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
420 | ||
421 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
422 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
423 | ||
424 | e1000_reset_adaptive(&adapter->hw); | |
425 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
426 | } | |
427 | ||
428 | /** | |
429 | * e1000_probe - Device Initialization Routine | |
430 | * @pdev: PCI device information struct | |
431 | * @ent: entry in e1000_pci_tbl | |
432 | * | |
433 | * Returns 0 on success, negative on failure | |
434 | * | |
435 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
436 | * The OS initialization, configuring of the adapter private structure, | |
437 | * and a hardware reset occur. | |
438 | **/ | |
439 | ||
440 | static int __devinit | |
441 | e1000_probe(struct pci_dev *pdev, | |
442 | const struct pci_device_id *ent) | |
443 | { | |
444 | struct net_device *netdev; | |
445 | struct e1000_adapter *adapter; | |
446 | static int cards_found = 0; | |
447 | unsigned long mmio_start; | |
448 | int mmio_len; | |
449 | int pci_using_dac; | |
450 | int i; | |
451 | int err; | |
452 | uint16_t eeprom_data; | |
453 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
454 | ||
455 | if((err = pci_enable_device(pdev))) | |
456 | return err; | |
457 | ||
458 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { | |
459 | pci_using_dac = 1; | |
460 | } else { | |
461 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { | |
462 | E1000_ERR("No usable DMA configuration, aborting\n"); | |
463 | return err; | |
464 | } | |
465 | pci_using_dac = 0; | |
466 | } | |
467 | ||
468 | if((err = pci_request_regions(pdev, e1000_driver_name))) | |
469 | return err; | |
470 | ||
471 | pci_set_master(pdev); | |
472 | ||
473 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
474 | if(!netdev) { | |
475 | err = -ENOMEM; | |
476 | goto err_alloc_etherdev; | |
477 | } | |
478 | ||
479 | SET_MODULE_OWNER(netdev); | |
480 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
481 | ||
482 | pci_set_drvdata(pdev, netdev); | |
483 | adapter = netdev->priv; | |
484 | adapter->netdev = netdev; | |
485 | adapter->pdev = pdev; | |
486 | adapter->hw.back = adapter; | |
487 | adapter->msg_enable = (1 << debug) - 1; | |
488 | ||
489 | mmio_start = pci_resource_start(pdev, BAR_0); | |
490 | mmio_len = pci_resource_len(pdev, BAR_0); | |
491 | ||
492 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
493 | if(!adapter->hw.hw_addr) { | |
494 | err = -EIO; | |
495 | goto err_ioremap; | |
496 | } | |
497 | ||
498 | for(i = BAR_1; i <= BAR_5; i++) { | |
499 | if(pci_resource_len(pdev, i) == 0) | |
500 | continue; | |
501 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
502 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
503 | break; | |
504 | } | |
505 | } | |
506 | ||
507 | netdev->open = &e1000_open; | |
508 | netdev->stop = &e1000_close; | |
509 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
510 | netdev->get_stats = &e1000_get_stats; | |
511 | netdev->set_multicast_list = &e1000_set_multi; | |
512 | netdev->set_mac_address = &e1000_set_mac; | |
513 | netdev->change_mtu = &e1000_change_mtu; | |
514 | netdev->do_ioctl = &e1000_ioctl; | |
515 | e1000_set_ethtool_ops(netdev); | |
516 | netdev->tx_timeout = &e1000_tx_timeout; | |
517 | netdev->watchdog_timeo = 5 * HZ; | |
518 | #ifdef CONFIG_E1000_NAPI | |
519 | netdev->poll = &e1000_clean; | |
520 | netdev->weight = 64; | |
521 | #endif | |
522 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
523 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
524 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
525 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
526 | netdev->poll_controller = e1000_netpoll; | |
527 | #endif | |
528 | strcpy(netdev->name, pci_name(pdev)); | |
529 | ||
530 | netdev->mem_start = mmio_start; | |
531 | netdev->mem_end = mmio_start + mmio_len; | |
532 | netdev->base_addr = adapter->hw.io_base; | |
533 | ||
534 | adapter->bd_number = cards_found; | |
535 | ||
536 | /* setup the private structure */ | |
537 | ||
538 | if((err = e1000_sw_init(adapter))) | |
539 | goto err_sw_init; | |
540 | ||
541 | if(adapter->hw.mac_type >= e1000_82543) { | |
542 | netdev->features = NETIF_F_SG | | |
543 | NETIF_F_HW_CSUM | | |
544 | NETIF_F_HW_VLAN_TX | | |
545 | NETIF_F_HW_VLAN_RX | | |
546 | NETIF_F_HW_VLAN_FILTER; | |
547 | } | |
548 | ||
549 | #ifdef NETIF_F_TSO | |
550 | if((adapter->hw.mac_type >= e1000_82544) && | |
551 | (adapter->hw.mac_type != e1000_82547)) | |
552 | netdev->features |= NETIF_F_TSO; | |
553 | #endif | |
554 | if(pci_using_dac) | |
555 | netdev->features |= NETIF_F_HIGHDMA; | |
556 | ||
557 | /* hard_start_xmit is safe against parallel locking */ | |
558 | netdev->features |= NETIF_F_LLTX; | |
559 | ||
560 | /* before reading the EEPROM, reset the controller to | |
561 | * put the device in a known good starting state */ | |
562 | ||
563 | e1000_reset_hw(&adapter->hw); | |
564 | ||
565 | /* make sure the EEPROM is good */ | |
566 | ||
567 | if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) { | |
568 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); | |
569 | err = -EIO; | |
570 | goto err_eeprom; | |
571 | } | |
572 | ||
573 | /* copy the MAC address out of the EEPROM */ | |
574 | ||
575 | if (e1000_read_mac_addr(&adapter->hw)) | |
576 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); | |
577 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
578 | ||
579 | if(!is_valid_ether_addr(netdev->dev_addr)) { | |
580 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); | |
581 | err = -EIO; | |
582 | goto err_eeprom; | |
583 | } | |
584 | ||
585 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
586 | ||
587 | e1000_get_bus_info(&adapter->hw); | |
588 | ||
589 | init_timer(&adapter->tx_fifo_stall_timer); | |
590 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
591 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
592 | ||
593 | init_timer(&adapter->watchdog_timer); | |
594 | adapter->watchdog_timer.function = &e1000_watchdog; | |
595 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
596 | ||
597 | INIT_WORK(&adapter->watchdog_task, | |
598 | (void (*)(void *))e1000_watchdog_task, adapter); | |
599 | ||
600 | init_timer(&adapter->phy_info_timer); | |
601 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
602 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
603 | ||
604 | INIT_WORK(&adapter->tx_timeout_task, | |
605 | (void (*)(void *))e1000_tx_timeout_task, netdev); | |
606 | ||
607 | /* we're going to reset, so assume we have no link for now */ | |
608 | ||
609 | netif_carrier_off(netdev); | |
610 | netif_stop_queue(netdev); | |
611 | ||
612 | e1000_check_options(adapter); | |
613 | ||
614 | /* Initial Wake on LAN setting | |
615 | * If APM wake is enabled in the EEPROM, | |
616 | * enable the ACPI Magic Packet filter | |
617 | */ | |
618 | ||
619 | switch(adapter->hw.mac_type) { | |
620 | case e1000_82542_rev2_0: | |
621 | case e1000_82542_rev2_1: | |
622 | case e1000_82543: | |
623 | break; | |
624 | case e1000_82544: | |
625 | e1000_read_eeprom(&adapter->hw, | |
626 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
627 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
628 | break; | |
629 | case e1000_82546: | |
630 | case e1000_82546_rev_3: | |
631 | if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
632 | && (adapter->hw.media_type == e1000_media_type_copper)) { | |
633 | e1000_read_eeprom(&adapter->hw, | |
634 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
635 | break; | |
636 | } | |
637 | /* Fall Through */ | |
638 | default: | |
639 | e1000_read_eeprom(&adapter->hw, | |
640 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
641 | break; | |
642 | } | |
643 | if(eeprom_data & eeprom_apme_mask) | |
644 | adapter->wol |= E1000_WUFC_MAG; | |
645 | ||
646 | /* reset the hardware with the new settings */ | |
647 | e1000_reset(adapter); | |
648 | ||
649 | strcpy(netdev->name, "eth%d"); | |
650 | if((err = register_netdev(netdev))) | |
651 | goto err_register; | |
652 | ||
653 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
654 | ||
655 | cards_found++; | |
656 | return 0; | |
657 | ||
658 | err_register: | |
659 | err_sw_init: | |
660 | err_eeprom: | |
661 | iounmap(adapter->hw.hw_addr); | |
662 | err_ioremap: | |
663 | free_netdev(netdev); | |
664 | err_alloc_etherdev: | |
665 | pci_release_regions(pdev); | |
666 | return err; | |
667 | } | |
668 | ||
669 | /** | |
670 | * e1000_remove - Device Removal Routine | |
671 | * @pdev: PCI device information struct | |
672 | * | |
673 | * e1000_remove is called by the PCI subsystem to alert the driver | |
674 | * that it should release a PCI device. The could be caused by a | |
675 | * Hot-Plug event, or because the driver is going to be removed from | |
676 | * memory. | |
677 | **/ | |
678 | ||
679 | static void __devexit | |
680 | e1000_remove(struct pci_dev *pdev) | |
681 | { | |
682 | struct net_device *netdev = pci_get_drvdata(pdev); | |
683 | struct e1000_adapter *adapter = netdev->priv; | |
684 | uint32_t manc; | |
685 | ||
686 | flush_scheduled_work(); | |
687 | ||
688 | if(adapter->hw.mac_type >= e1000_82540 && | |
689 | adapter->hw.media_type == e1000_media_type_copper) { | |
690 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
691 | if(manc & E1000_MANC_SMBUS_EN) { | |
692 | manc |= E1000_MANC_ARP_EN; | |
693 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
694 | } | |
695 | } | |
696 | ||
697 | unregister_netdev(netdev); | |
698 | ||
699 | e1000_phy_hw_reset(&adapter->hw); | |
700 | ||
701 | iounmap(adapter->hw.hw_addr); | |
702 | pci_release_regions(pdev); | |
703 | ||
704 | free_netdev(netdev); | |
705 | ||
706 | pci_disable_device(pdev); | |
707 | } | |
708 | ||
709 | /** | |
710 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
711 | * @adapter: board private structure to initialize | |
712 | * | |
713 | * e1000_sw_init initializes the Adapter private data structure. | |
714 | * Fields are initialized based on PCI device information and | |
715 | * OS network device settings (MTU size). | |
716 | **/ | |
717 | ||
718 | static int __devinit | |
719 | e1000_sw_init(struct e1000_adapter *adapter) | |
720 | { | |
721 | struct e1000_hw *hw = &adapter->hw; | |
722 | struct net_device *netdev = adapter->netdev; | |
723 | struct pci_dev *pdev = adapter->pdev; | |
724 | ||
725 | /* PCI config space info */ | |
726 | ||
727 | hw->vendor_id = pdev->vendor; | |
728 | hw->device_id = pdev->device; | |
729 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
730 | hw->subsystem_id = pdev->subsystem_device; | |
731 | ||
732 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
733 | ||
734 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
735 | ||
736 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
737 | hw->max_frame_size = netdev->mtu + | |
738 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
739 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
740 | ||
741 | /* identify the MAC */ | |
742 | ||
743 | if(e1000_set_mac_type(hw)) { | |
744 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); | |
745 | return -EIO; | |
746 | } | |
747 | ||
748 | /* initialize eeprom parameters */ | |
749 | ||
750 | e1000_init_eeprom_params(hw); | |
751 | ||
752 | switch(hw->mac_type) { | |
753 | default: | |
754 | break; | |
755 | case e1000_82541: | |
756 | case e1000_82547: | |
757 | case e1000_82541_rev_2: | |
758 | case e1000_82547_rev_2: | |
759 | hw->phy_init_script = 1; | |
760 | break; | |
761 | } | |
762 | ||
763 | e1000_set_media_type(hw); | |
764 | ||
765 | hw->wait_autoneg_complete = FALSE; | |
766 | hw->tbi_compatibility_en = TRUE; | |
767 | hw->adaptive_ifs = TRUE; | |
768 | ||
769 | /* Copper options */ | |
770 | ||
771 | if(hw->media_type == e1000_media_type_copper) { | |
772 | hw->mdix = AUTO_ALL_MODES; | |
773 | hw->disable_polarity_correction = FALSE; | |
774 | hw->master_slave = E1000_MASTER_SLAVE; | |
775 | } | |
776 | ||
777 | atomic_set(&adapter->irq_sem, 1); | |
778 | spin_lock_init(&adapter->stats_lock); | |
779 | spin_lock_init(&adapter->tx_lock); | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | /** | |
785 | * e1000_open - Called when a network interface is made active | |
786 | * @netdev: network interface device structure | |
787 | * | |
788 | * Returns 0 on success, negative value on failure | |
789 | * | |
790 | * The open entry point is called when a network interface is made | |
791 | * active by the system (IFF_UP). At this point all resources needed | |
792 | * for transmit and receive operations are allocated, the interrupt | |
793 | * handler is registered with the OS, the watchdog timer is started, | |
794 | * and the stack is notified that the interface is ready. | |
795 | **/ | |
796 | ||
797 | static int | |
798 | e1000_open(struct net_device *netdev) | |
799 | { | |
800 | struct e1000_adapter *adapter = netdev->priv; | |
801 | int err; | |
802 | ||
803 | /* allocate transmit descriptors */ | |
804 | ||
805 | if((err = e1000_setup_tx_resources(adapter))) | |
806 | goto err_setup_tx; | |
807 | ||
808 | /* allocate receive descriptors */ | |
809 | ||
810 | if((err = e1000_setup_rx_resources(adapter))) | |
811 | goto err_setup_rx; | |
812 | ||
813 | if((err = e1000_up(adapter))) | |
814 | goto err_up; | |
815 | ||
816 | return E1000_SUCCESS; | |
817 | ||
818 | err_up: | |
819 | e1000_free_rx_resources(adapter); | |
820 | err_setup_rx: | |
821 | e1000_free_tx_resources(adapter); | |
822 | err_setup_tx: | |
823 | e1000_reset(adapter); | |
824 | ||
825 | return err; | |
826 | } | |
827 | ||
828 | /** | |
829 | * e1000_close - Disables a network interface | |
830 | * @netdev: network interface device structure | |
831 | * | |
832 | * Returns 0, this is not allowed to fail | |
833 | * | |
834 | * The close entry point is called when an interface is de-activated | |
835 | * by the OS. The hardware is still under the drivers control, but | |
836 | * needs to be disabled. A global MAC reset is issued to stop the | |
837 | * hardware, and all transmit and receive resources are freed. | |
838 | **/ | |
839 | ||
840 | static int | |
841 | e1000_close(struct net_device *netdev) | |
842 | { | |
843 | struct e1000_adapter *adapter = netdev->priv; | |
844 | ||
845 | e1000_down(adapter); | |
846 | ||
847 | e1000_free_tx_resources(adapter); | |
848 | e1000_free_rx_resources(adapter); | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | /** | |
854 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
855 | * @adapter: address of board private structure | |
856 | * @begin: address of beginning of memory | |
857 | * @end: address of end of memory | |
858 | **/ | |
859 | static inline boolean_t | |
860 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
861 | void *start, unsigned long len) | |
862 | { | |
863 | unsigned long begin = (unsigned long) start; | |
864 | unsigned long end = begin + len; | |
865 | ||
866 | /* first rev 82545 and 82546 need to not allow any memory | |
867 | * write location to cross a 64k boundary due to errata 23 */ | |
868 | if (adapter->hw.mac_type == e1000_82545 || | |
869 | adapter->hw.mac_type == e1000_82546 ) { | |
870 | ||
871 | /* check buffer doesn't cross 64kB */ | |
872 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; | |
873 | } | |
874 | ||
875 | return TRUE; | |
876 | } | |
877 | ||
878 | /** | |
879 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
880 | * @adapter: board private structure | |
881 | * | |
882 | * Return 0 on success, negative on failure | |
883 | **/ | |
884 | ||
885 | int | |
886 | e1000_setup_tx_resources(struct e1000_adapter *adapter) | |
887 | { | |
888 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
889 | struct pci_dev *pdev = adapter->pdev; | |
890 | int size; | |
891 | ||
892 | size = sizeof(struct e1000_buffer) * txdr->count; | |
893 | txdr->buffer_info = vmalloc(size); | |
894 | if(!txdr->buffer_info) { | |
895 | DPRINTK(PROBE, ERR, | |
896 | "Unable to Allocate Memory for the Transmit descriptor ring\n"); | |
897 | return -ENOMEM; | |
898 | } | |
899 | memset(txdr->buffer_info, 0, size); | |
900 | ||
901 | /* round up to nearest 4K */ | |
902 | ||
903 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
904 | E1000_ROUNDUP(txdr->size, 4096); | |
905 | ||
906 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
907 | if(!txdr->desc) { | |
908 | setup_tx_desc_die: | |
909 | DPRINTK(PROBE, ERR, | |
910 | "Unable to Allocate Memory for the Transmit descriptor ring\n"); | |
911 | vfree(txdr->buffer_info); | |
912 | return -ENOMEM; | |
913 | } | |
914 | ||
915 | /* fix for errata 23, cant cross 64kB boundary */ | |
916 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
917 | void *olddesc = txdr->desc; | |
918 | dma_addr_t olddma = txdr->dma; | |
919 | DPRINTK(TX_ERR,ERR,"txdr align check failed: %u bytes at %p\n", | |
920 | txdr->size, txdr->desc); | |
921 | /* try again, without freeing the previous */ | |
922 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
923 | /* failed allocation, critial failure */ | |
924 | if(!txdr->desc) { | |
925 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
926 | goto setup_tx_desc_die; | |
927 | } | |
928 | ||
929 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
930 | /* give up */ | |
931 | pci_free_consistent(pdev, txdr->size, | |
932 | txdr->desc, txdr->dma); | |
933 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
934 | DPRINTK(PROBE, ERR, | |
935 | "Unable to Allocate aligned Memory for the Transmit" | |
936 | " descriptor ring\n"); | |
937 | vfree(txdr->buffer_info); | |
938 | return -ENOMEM; | |
939 | } else { | |
940 | /* free old, move on with the new one since its okay */ | |
941 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
942 | } | |
943 | } | |
944 | memset(txdr->desc, 0, txdr->size); | |
945 | ||
946 | txdr->next_to_use = 0; | |
947 | txdr->next_to_clean = 0; | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
952 | /** | |
953 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
954 | * @adapter: board private structure | |
955 | * | |
956 | * Configure the Tx unit of the MAC after a reset. | |
957 | **/ | |
958 | ||
959 | static void | |
960 | e1000_configure_tx(struct e1000_adapter *adapter) | |
961 | { | |
962 | uint64_t tdba = adapter->tx_ring.dma; | |
963 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc); | |
964 | uint32_t tctl, tipg; | |
965 | ||
966 | E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
967 | E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32)); | |
968 | ||
969 | E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen); | |
970 | ||
971 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
972 | ||
973 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
974 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
975 | ||
976 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
977 | ||
978 | switch (adapter->hw.mac_type) { | |
979 | case e1000_82542_rev2_0: | |
980 | case e1000_82542_rev2_1: | |
981 | tipg = DEFAULT_82542_TIPG_IPGT; | |
982 | tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
983 | tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
984 | break; | |
985 | default: | |
986 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
987 | adapter->hw.media_type == e1000_media_type_internal_serdes) | |
988 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
989 | else | |
990 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
991 | tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
992 | tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
993 | } | |
994 | E1000_WRITE_REG(&adapter->hw, TIPG, tipg); | |
995 | ||
996 | /* Set the Tx Interrupt Delay register */ | |
997 | ||
998 | E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay); | |
999 | if(adapter->hw.mac_type >= e1000_82540) | |
1000 | E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay); | |
1001 | ||
1002 | /* Program the Transmit Control Register */ | |
1003 | ||
1004 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1005 | ||
1006 | tctl &= ~E1000_TCTL_CT; | |
1007 | tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | | |
1008 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1009 | ||
1010 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1011 | ||
1012 | e1000_config_collision_dist(&adapter->hw); | |
1013 | ||
1014 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1015 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1016 | E1000_TXD_CMD_IFCS; | |
1017 | ||
1018 | if(adapter->hw.mac_type < e1000_82543) | |
1019 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; | |
1020 | else | |
1021 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1022 | ||
1023 | /* Cache if we're 82544 running in PCI-X because we'll | |
1024 | * need this to apply a workaround later in the send path. */ | |
1025 | if(adapter->hw.mac_type == e1000_82544 && | |
1026 | adapter->hw.bus_type == e1000_bus_type_pcix) | |
1027 | adapter->pcix_82544 = 1; | |
1028 | } | |
1029 | ||
1030 | /** | |
1031 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1032 | * @adapter: board private structure | |
1033 | * | |
1034 | * Returns 0 on success, negative on failure | |
1035 | **/ | |
1036 | ||
1037 | int | |
1038 | e1000_setup_rx_resources(struct e1000_adapter *adapter) | |
1039 | { | |
1040 | struct e1000_desc_ring *rxdr = &adapter->rx_ring; | |
1041 | struct pci_dev *pdev = adapter->pdev; | |
1042 | int size; | |
1043 | ||
1044 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
1045 | rxdr->buffer_info = vmalloc(size); | |
1046 | if(!rxdr->buffer_info) { | |
1047 | DPRINTK(PROBE, ERR, | |
1048 | "Unable to Allocate Memory for the Recieve descriptor ring\n"); | |
1049 | return -ENOMEM; | |
1050 | } | |
1051 | memset(rxdr->buffer_info, 0, size); | |
1052 | ||
1053 | /* Round up to nearest 4K */ | |
1054 | ||
1055 | rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc); | |
1056 | E1000_ROUNDUP(rxdr->size, 4096); | |
1057 | ||
1058 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1059 | ||
1060 | if(!rxdr->desc) { | |
1061 | setup_rx_desc_die: | |
1062 | DPRINTK(PROBE, ERR, | |
1063 | "Unble to Allocate Memory for the Recieve descriptor ring\n"); | |
1064 | vfree(rxdr->buffer_info); | |
1065 | return -ENOMEM; | |
1066 | } | |
1067 | ||
1068 | /* fix for errata 23, cant cross 64kB boundary */ | |
1069 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1070 | void *olddesc = rxdr->desc; | |
1071 | dma_addr_t olddma = rxdr->dma; | |
1072 | DPRINTK(RX_ERR,ERR, | |
1073 | "rxdr align check failed: %u bytes at %p\n", | |
1074 | rxdr->size, rxdr->desc); | |
1075 | /* try again, without freeing the previous */ | |
1076 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1077 | /* failed allocation, critial failure */ | |
1078 | if(!rxdr->desc) { | |
1079 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1080 | goto setup_rx_desc_die; | |
1081 | } | |
1082 | ||
1083 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1084 | /* give up */ | |
1085 | pci_free_consistent(pdev, rxdr->size, | |
1086 | rxdr->desc, rxdr->dma); | |
1087 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1088 | DPRINTK(PROBE, ERR, | |
1089 | "Unable to Allocate aligned Memory for the" | |
1090 | " Receive descriptor ring\n"); | |
1091 | vfree(rxdr->buffer_info); | |
1092 | return -ENOMEM; | |
1093 | } else { | |
1094 | /* free old, move on with the new one since its okay */ | |
1095 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1096 | } | |
1097 | } | |
1098 | memset(rxdr->desc, 0, rxdr->size); | |
1099 | ||
1100 | rxdr->next_to_clean = 0; | |
1101 | rxdr->next_to_use = 0; | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | /** | |
1107 | * e1000_setup_rctl - configure the receive control register | |
1108 | * @adapter: Board private structure | |
1109 | **/ | |
1110 | ||
1111 | static void | |
1112 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1113 | { | |
1114 | uint32_t rctl; | |
1115 | ||
1116 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1117 | ||
1118 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1119 | ||
1120 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1121 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1122 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1123 | ||
1124 | if(adapter->hw.tbi_compatibility_on == 1) | |
1125 | rctl |= E1000_RCTL_SBP; | |
1126 | else | |
1127 | rctl &= ~E1000_RCTL_SBP; | |
1128 | ||
1129 | /* Setup buffer sizes */ | |
1130 | rctl &= ~(E1000_RCTL_SZ_4096); | |
1131 | rctl |= (E1000_RCTL_BSEX | E1000_RCTL_LPE); | |
1132 | switch (adapter->rx_buffer_len) { | |
1133 | case E1000_RXBUFFER_2048: | |
1134 | default: | |
1135 | rctl |= E1000_RCTL_SZ_2048; | |
1136 | rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE); | |
1137 | break; | |
1138 | case E1000_RXBUFFER_4096: | |
1139 | rctl |= E1000_RCTL_SZ_4096; | |
1140 | break; | |
1141 | case E1000_RXBUFFER_8192: | |
1142 | rctl |= E1000_RCTL_SZ_8192; | |
1143 | break; | |
1144 | case E1000_RXBUFFER_16384: | |
1145 | rctl |= E1000_RCTL_SZ_16384; | |
1146 | break; | |
1147 | } | |
1148 | ||
1149 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1150 | } | |
1151 | ||
1152 | /** | |
1153 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1154 | * @adapter: board private structure | |
1155 | * | |
1156 | * Configure the Rx unit of the MAC after a reset. | |
1157 | **/ | |
1158 | ||
1159 | static void | |
1160 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1161 | { | |
1162 | uint64_t rdba = adapter->rx_ring.dma; | |
1163 | uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc); | |
1164 | uint32_t rctl; | |
1165 | uint32_t rxcsum; | |
1166 | ||
1167 | /* disable receives while setting up the descriptors */ | |
1168 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1169 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1170 | ||
1171 | /* set the Receive Delay Timer Register */ | |
1172 | E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay); | |
1173 | ||
1174 | if(adapter->hw.mac_type >= e1000_82540) { | |
1175 | E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay); | |
1176 | if(adapter->itr > 1) | |
1177 | E1000_WRITE_REG(&adapter->hw, ITR, | |
1178 | 1000000000 / (adapter->itr * 256)); | |
1179 | } | |
1180 | ||
1181 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
1182 | E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1183 | E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32)); | |
1184 | ||
1185 | E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen); | |
1186 | ||
1187 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
1188 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1189 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1190 | ||
1191 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ | |
1192 | if((adapter->hw.mac_type >= e1000_82543) && | |
1193 | (adapter->rx_csum == TRUE)) { | |
1194 | rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM); | |
1195 | rxcsum |= E1000_RXCSUM_TUOFL; | |
1196 | E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum); | |
1197 | } | |
1198 | ||
1199 | /* Enable Receives */ | |
1200 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1201 | } | |
1202 | ||
1203 | /** | |
1204 | * e1000_free_tx_resources - Free Tx Resources | |
1205 | * @adapter: board private structure | |
1206 | * | |
1207 | * Free all transmit software resources | |
1208 | **/ | |
1209 | ||
1210 | void | |
1211 | e1000_free_tx_resources(struct e1000_adapter *adapter) | |
1212 | { | |
1213 | struct pci_dev *pdev = adapter->pdev; | |
1214 | ||
1215 | e1000_clean_tx_ring(adapter); | |
1216 | ||
1217 | vfree(adapter->tx_ring.buffer_info); | |
1218 | adapter->tx_ring.buffer_info = NULL; | |
1219 | ||
1220 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
1221 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
1222 | ||
1223 | adapter->tx_ring.desc = NULL; | |
1224 | } | |
1225 | ||
1226 | static inline void | |
1227 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1228 | struct e1000_buffer *buffer_info) | |
1229 | { | |
1230 | struct pci_dev *pdev = adapter->pdev; | |
1231 | ||
1232 | if(buffer_info->dma) { | |
1233 | pci_unmap_page(pdev, | |
1234 | buffer_info->dma, | |
1235 | buffer_info->length, | |
1236 | PCI_DMA_TODEVICE); | |
1237 | buffer_info->dma = 0; | |
1238 | } | |
1239 | if(buffer_info->skb) { | |
1240 | dev_kfree_skb_any(buffer_info->skb); | |
1241 | buffer_info->skb = NULL; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | /** | |
1246 | * e1000_clean_tx_ring - Free Tx Buffers | |
1247 | * @adapter: board private structure | |
1248 | **/ | |
1249 | ||
1250 | static void | |
1251 | e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1252 | { | |
1253 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1254 | struct e1000_buffer *buffer_info; | |
1255 | unsigned long size; | |
1256 | unsigned int i; | |
1257 | ||
1258 | /* Free all the Tx ring sk_buffs */ | |
1259 | ||
1260 | if (likely(adapter->previous_buffer_info.skb != NULL)) { | |
1261 | e1000_unmap_and_free_tx_resource(adapter, | |
1262 | &adapter->previous_buffer_info); | |
1263 | } | |
1264 | ||
1265 | for(i = 0; i < tx_ring->count; i++) { | |
1266 | buffer_info = &tx_ring->buffer_info[i]; | |
1267 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1268 | } | |
1269 | ||
1270 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1271 | memset(tx_ring->buffer_info, 0, size); | |
1272 | ||
1273 | /* Zero out the descriptor ring */ | |
1274 | ||
1275 | memset(tx_ring->desc, 0, tx_ring->size); | |
1276 | ||
1277 | tx_ring->next_to_use = 0; | |
1278 | tx_ring->next_to_clean = 0; | |
1279 | ||
1280 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
1281 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
1282 | } | |
1283 | ||
1284 | /** | |
1285 | * e1000_free_rx_resources - Free Rx Resources | |
1286 | * @adapter: board private structure | |
1287 | * | |
1288 | * Free all receive software resources | |
1289 | **/ | |
1290 | ||
1291 | void | |
1292 | e1000_free_rx_resources(struct e1000_adapter *adapter) | |
1293 | { | |
1294 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1295 | struct pci_dev *pdev = adapter->pdev; | |
1296 | ||
1297 | e1000_clean_rx_ring(adapter); | |
1298 | ||
1299 | vfree(rx_ring->buffer_info); | |
1300 | rx_ring->buffer_info = NULL; | |
1301 | ||
1302 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1303 | ||
1304 | rx_ring->desc = NULL; | |
1305 | } | |
1306 | ||
1307 | /** | |
1308 | * e1000_clean_rx_ring - Free Rx Buffers | |
1309 | * @adapter: board private structure | |
1310 | **/ | |
1311 | ||
1312 | static void | |
1313 | e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1314 | { | |
1315 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1316 | struct e1000_buffer *buffer_info; | |
1317 | struct pci_dev *pdev = adapter->pdev; | |
1318 | unsigned long size; | |
1319 | unsigned int i; | |
1320 | ||
1321 | /* Free all the Rx ring sk_buffs */ | |
1322 | ||
1323 | for(i = 0; i < rx_ring->count; i++) { | |
1324 | buffer_info = &rx_ring->buffer_info[i]; | |
1325 | if(buffer_info->skb) { | |
1326 | ||
1327 | pci_unmap_single(pdev, | |
1328 | buffer_info->dma, | |
1329 | buffer_info->length, | |
1330 | PCI_DMA_FROMDEVICE); | |
1331 | ||
1332 | dev_kfree_skb(buffer_info->skb); | |
1333 | buffer_info->skb = NULL; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1338 | memset(rx_ring->buffer_info, 0, size); | |
1339 | ||
1340 | /* Zero out the descriptor ring */ | |
1341 | ||
1342 | memset(rx_ring->desc, 0, rx_ring->size); | |
1343 | ||
1344 | rx_ring->next_to_clean = 0; | |
1345 | rx_ring->next_to_use = 0; | |
1346 | ||
1347 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1348 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1349 | } | |
1350 | ||
1351 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
1352 | * and memory write and invalidate disabled for certain operations | |
1353 | */ | |
1354 | static void | |
1355 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
1356 | { | |
1357 | struct net_device *netdev = adapter->netdev; | |
1358 | uint32_t rctl; | |
1359 | ||
1360 | e1000_pci_clear_mwi(&adapter->hw); | |
1361 | ||
1362 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1363 | rctl |= E1000_RCTL_RST; | |
1364 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1365 | E1000_WRITE_FLUSH(&adapter->hw); | |
1366 | mdelay(5); | |
1367 | ||
1368 | if(netif_running(netdev)) | |
1369 | e1000_clean_rx_ring(adapter); | |
1370 | } | |
1371 | ||
1372 | static void | |
1373 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
1374 | { | |
1375 | struct net_device *netdev = adapter->netdev; | |
1376 | uint32_t rctl; | |
1377 | ||
1378 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1379 | rctl &= ~E1000_RCTL_RST; | |
1380 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1381 | E1000_WRITE_FLUSH(&adapter->hw); | |
1382 | mdelay(5); | |
1383 | ||
1384 | if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
1385 | e1000_pci_set_mwi(&adapter->hw); | |
1386 | ||
1387 | if(netif_running(netdev)) { | |
1388 | e1000_configure_rx(adapter); | |
1389 | e1000_alloc_rx_buffers(adapter); | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | /** | |
1394 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
1395 | * @netdev: network interface device structure | |
1396 | * @p: pointer to an address structure | |
1397 | * | |
1398 | * Returns 0 on success, negative on failure | |
1399 | **/ | |
1400 | ||
1401 | static int | |
1402 | e1000_set_mac(struct net_device *netdev, void *p) | |
1403 | { | |
1404 | struct e1000_adapter *adapter = netdev->priv; | |
1405 | struct sockaddr *addr = p; | |
1406 | ||
1407 | if(!is_valid_ether_addr(addr->sa_data)) | |
1408 | return -EADDRNOTAVAIL; | |
1409 | ||
1410 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1411 | ||
1412 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1413 | e1000_enter_82542_rst(adapter); | |
1414 | ||
1415 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1416 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
1417 | ||
1418 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
1419 | ||
1420 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1421 | e1000_leave_82542_rst(adapter); | |
1422 | ||
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | /** | |
1427 | * e1000_set_multi - Multicast and Promiscuous mode set | |
1428 | * @netdev: network interface device structure | |
1429 | * | |
1430 | * The set_multi entry point is called whenever the multicast address | |
1431 | * list or the network interface flags are updated. This routine is | |
1432 | * responsible for configuring the hardware for proper multicast, | |
1433 | * promiscuous mode, and all-multi behavior. | |
1434 | **/ | |
1435 | ||
1436 | static void | |
1437 | e1000_set_multi(struct net_device *netdev) | |
1438 | { | |
1439 | struct e1000_adapter *adapter = netdev->priv; | |
1440 | struct e1000_hw *hw = &adapter->hw; | |
1441 | struct dev_mc_list *mc_ptr; | |
1442 | uint32_t rctl; | |
1443 | uint32_t hash_value; | |
1444 | int i; | |
1445 | unsigned long flags; | |
1446 | ||
1447 | /* Check for Promiscuous and All Multicast modes */ | |
1448 | ||
1449 | spin_lock_irqsave(&adapter->tx_lock, flags); | |
1450 | ||
1451 | rctl = E1000_READ_REG(hw, RCTL); | |
1452 | ||
1453 | if(netdev->flags & IFF_PROMISC) { | |
1454 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1455 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1456 | rctl |= E1000_RCTL_MPE; | |
1457 | rctl &= ~E1000_RCTL_UPE; | |
1458 | } else { | |
1459 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1460 | } | |
1461 | ||
1462 | E1000_WRITE_REG(hw, RCTL, rctl); | |
1463 | ||
1464 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1465 | ||
1466 | if(hw->mac_type == e1000_82542_rev2_0) | |
1467 | e1000_enter_82542_rst(adapter); | |
1468 | ||
1469 | /* load the first 14 multicast address into the exact filters 1-14 | |
1470 | * RAR 0 is used for the station MAC adddress | |
1471 | * if there are not 14 addresses, go ahead and clear the filters | |
1472 | */ | |
1473 | mc_ptr = netdev->mc_list; | |
1474 | ||
1475 | for(i = 1; i < E1000_RAR_ENTRIES; i++) { | |
1476 | if(mc_ptr) { | |
1477 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); | |
1478 | mc_ptr = mc_ptr->next; | |
1479 | } else { | |
1480 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
1481 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | /* clear the old settings from the multicast hash table */ | |
1486 | ||
1487 | for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++) | |
1488 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
1489 | ||
1490 | /* load any remaining addresses into the hash table */ | |
1491 | ||
1492 | for(; mc_ptr; mc_ptr = mc_ptr->next) { | |
1493 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
1494 | e1000_mta_set(hw, hash_value); | |
1495 | } | |
1496 | ||
1497 | if(hw->mac_type == e1000_82542_rev2_0) | |
1498 | e1000_leave_82542_rst(adapter); | |
1499 | ||
1500 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1501 | } | |
1502 | ||
1503 | /* Need to wait a few seconds after link up to get diagnostic information from | |
1504 | * the phy */ | |
1505 | ||
1506 | static void | |
1507 | e1000_update_phy_info(unsigned long data) | |
1508 | { | |
1509 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1510 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
1511 | } | |
1512 | ||
1513 | /** | |
1514 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
1515 | * @data: pointer to adapter cast into an unsigned long | |
1516 | **/ | |
1517 | ||
1518 | static void | |
1519 | e1000_82547_tx_fifo_stall(unsigned long data) | |
1520 | { | |
1521 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1522 | struct net_device *netdev = adapter->netdev; | |
1523 | uint32_t tctl; | |
1524 | ||
1525 | if(atomic_read(&adapter->tx_fifo_stall)) { | |
1526 | if((E1000_READ_REG(&adapter->hw, TDT) == | |
1527 | E1000_READ_REG(&adapter->hw, TDH)) && | |
1528 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
1529 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
1530 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
1531 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
1532 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1533 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
1534 | tctl & ~E1000_TCTL_EN); | |
1535 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
1536 | adapter->tx_head_addr); | |
1537 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
1538 | adapter->tx_head_addr); | |
1539 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
1540 | adapter->tx_head_addr); | |
1541 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
1542 | adapter->tx_head_addr); | |
1543 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1544 | E1000_WRITE_FLUSH(&adapter->hw); | |
1545 | ||
1546 | adapter->tx_fifo_head = 0; | |
1547 | atomic_set(&adapter->tx_fifo_stall, 0); | |
1548 | netif_wake_queue(netdev); | |
1549 | } else { | |
1550 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | /** | |
1556 | * e1000_watchdog - Timer Call-back | |
1557 | * @data: pointer to adapter cast into an unsigned long | |
1558 | **/ | |
1559 | static void | |
1560 | e1000_watchdog(unsigned long data) | |
1561 | { | |
1562 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1563 | ||
1564 | /* Do the rest outside of interrupt context */ | |
1565 | schedule_work(&adapter->watchdog_task); | |
1566 | } | |
1567 | ||
1568 | static void | |
1569 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
1570 | { | |
1571 | struct net_device *netdev = adapter->netdev; | |
1572 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
1573 | uint32_t link; | |
1574 | ||
1575 | e1000_check_for_link(&adapter->hw); | |
1576 | ||
1577 | if((adapter->hw.media_type == e1000_media_type_internal_serdes) && | |
1578 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) | |
1579 | link = !adapter->hw.serdes_link_down; | |
1580 | else | |
1581 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
1582 | ||
1583 | if(link) { | |
1584 | if(!netif_carrier_ok(netdev)) { | |
1585 | e1000_get_speed_and_duplex(&adapter->hw, | |
1586 | &adapter->link_speed, | |
1587 | &adapter->link_duplex); | |
1588 | ||
1589 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
1590 | adapter->link_speed, | |
1591 | adapter->link_duplex == FULL_DUPLEX ? | |
1592 | "Full Duplex" : "Half Duplex"); | |
1593 | ||
1594 | netif_carrier_on(netdev); | |
1595 | netif_wake_queue(netdev); | |
1596 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1597 | adapter->smartspeed = 0; | |
1598 | } | |
1599 | } else { | |
1600 | if(netif_carrier_ok(netdev)) { | |
1601 | adapter->link_speed = 0; | |
1602 | adapter->link_duplex = 0; | |
1603 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
1604 | netif_carrier_off(netdev); | |
1605 | netif_stop_queue(netdev); | |
1606 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1607 | } | |
1608 | ||
1609 | e1000_smartspeed(adapter); | |
1610 | } | |
1611 | ||
1612 | e1000_update_stats(adapter); | |
1613 | ||
1614 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
1615 | adapter->tpt_old = adapter->stats.tpt; | |
1616 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
1617 | adapter->colc_old = adapter->stats.colc; | |
1618 | ||
1619 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
1620 | adapter->gorcl_old = adapter->stats.gorcl; | |
1621 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
1622 | adapter->gotcl_old = adapter->stats.gotcl; | |
1623 | ||
1624 | e1000_update_adaptive(&adapter->hw); | |
1625 | ||
1626 | if(!netif_carrier_ok(netdev)) { | |
1627 | if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1628 | /* We've lost link, so the controller stops DMA, | |
1629 | * but we've got queued Tx work that's never going | |
1630 | * to get done, so reset controller to flush Tx. | |
1631 | * (Do the reset outside of interrupt context). */ | |
1632 | schedule_work(&adapter->tx_timeout_task); | |
1633 | } | |
1634 | } | |
1635 | ||
1636 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
1637 | if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { | |
1638 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total | |
1639 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
1640 | * else is between 2000-8000. */ | |
1641 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
1642 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? | |
1643 | adapter->gotcl - adapter->gorcl : | |
1644 | adapter->gorcl - adapter->gotcl) / 10000; | |
1645 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
1646 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
1647 | } | |
1648 | ||
1649 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
1650 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
1651 | ||
1652 | /* Force detection of hung controller every watchdog period*/ | |
1653 | adapter->detect_tx_hung = TRUE; | |
1654 | ||
1655 | /* Reset the timer */ | |
1656 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1657 | } | |
1658 | ||
1659 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
1660 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
1661 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
1662 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1663 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
1664 | ||
1665 | static inline int | |
1666 | e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1667 | { | |
1668 | #ifdef NETIF_F_TSO | |
1669 | struct e1000_context_desc *context_desc; | |
1670 | unsigned int i; | |
1671 | uint32_t cmd_length = 0; | |
1672 | uint16_t ipcse, tucse, mss; | |
1673 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; | |
1674 | int err; | |
1675 | ||
1676 | if(skb_shinfo(skb)->tso_size) { | |
1677 | if (skb_header_cloned(skb)) { | |
1678 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1679 | if (err) | |
1680 | return err; | |
1681 | } | |
1682 | ||
1683 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
1684 | mss = skb_shinfo(skb)->tso_size; | |
1685 | skb->nh.iph->tot_len = 0; | |
1686 | skb->nh.iph->check = 0; | |
1687 | skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1688 | skb->nh.iph->daddr, | |
1689 | 0, | |
1690 | IPPROTO_TCP, | |
1691 | 0); | |
1692 | ipcss = skb->nh.raw - skb->data; | |
1693 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1694 | ipcse = skb->h.raw - skb->data - 1; | |
1695 | tucss = skb->h.raw - skb->data; | |
1696 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1697 | tucse = 0; | |
1698 | ||
1699 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
1700 | E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP | | |
1701 | (skb->len - (hdr_len))); | |
1702 | ||
1703 | i = adapter->tx_ring.next_to_use; | |
1704 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1705 | ||
1706 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
1707 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
1708 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
1709 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
1710 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
1711 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
1712 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
1713 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
1714 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
1715 | ||
1716 | if(++i == adapter->tx_ring.count) i = 0; | |
1717 | adapter->tx_ring.next_to_use = i; | |
1718 | ||
1719 | return 1; | |
1720 | } | |
1721 | #endif | |
1722 | ||
1723 | return 0; | |
1724 | } | |
1725 | ||
1726 | static inline boolean_t | |
1727 | e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1728 | { | |
1729 | struct e1000_context_desc *context_desc; | |
1730 | unsigned int i; | |
1731 | uint8_t css; | |
1732 | ||
1733 | if(likely(skb->ip_summed == CHECKSUM_HW)) { | |
1734 | css = skb->h.raw - skb->data; | |
1735 | ||
1736 | i = adapter->tx_ring.next_to_use; | |
1737 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1738 | ||
1739 | context_desc->upper_setup.tcp_fields.tucss = css; | |
1740 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
1741 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
1742 | context_desc->tcp_seg_setup.data = 0; | |
1743 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
1744 | ||
1745 | if(unlikely(++i == adapter->tx_ring.count)) i = 0; | |
1746 | adapter->tx_ring.next_to_use = i; | |
1747 | ||
1748 | return TRUE; | |
1749 | } | |
1750 | ||
1751 | return FALSE; | |
1752 | } | |
1753 | ||
1754 | #define E1000_MAX_TXD_PWR 12 | |
1755 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
1756 | ||
1757 | static inline int | |
1758 | e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb, | |
1759 | unsigned int first, unsigned int max_per_txd, | |
1760 | unsigned int nr_frags, unsigned int mss) | |
1761 | { | |
1762 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1763 | struct e1000_buffer *buffer_info; | |
1764 | unsigned int len = skb->len; | |
1765 | unsigned int offset = 0, size, count = 0, i; | |
1766 | unsigned int f; | |
1767 | len -= skb->data_len; | |
1768 | ||
1769 | i = tx_ring->next_to_use; | |
1770 | ||
1771 | while(len) { | |
1772 | buffer_info = &tx_ring->buffer_info[i]; | |
1773 | size = min(len, max_per_txd); | |
1774 | #ifdef NETIF_F_TSO | |
1775 | /* Workaround for premature desc write-backs | |
1776 | * in TSO mode. Append 4-byte sentinel desc */ | |
1777 | if(unlikely(mss && !nr_frags && size == len && size > 8)) | |
1778 | size -= 4; | |
1779 | #endif | |
1780 | /* Workaround for potential 82544 hang in PCI-X. Avoid | |
1781 | * terminating buffers within evenly-aligned dwords. */ | |
1782 | if(unlikely(adapter->pcix_82544 && | |
1783 | !((unsigned long)(skb->data + offset + size - 1) & 4) && | |
1784 | size > 4)) | |
1785 | size -= 4; | |
1786 | ||
1787 | buffer_info->length = size; | |
1788 | buffer_info->dma = | |
1789 | pci_map_single(adapter->pdev, | |
1790 | skb->data + offset, | |
1791 | size, | |
1792 | PCI_DMA_TODEVICE); | |
1793 | buffer_info->time_stamp = jiffies; | |
1794 | ||
1795 | len -= size; | |
1796 | offset += size; | |
1797 | count++; | |
1798 | if(unlikely(++i == tx_ring->count)) i = 0; | |
1799 | } | |
1800 | ||
1801 | for(f = 0; f < nr_frags; f++) { | |
1802 | struct skb_frag_struct *frag; | |
1803 | ||
1804 | frag = &skb_shinfo(skb)->frags[f]; | |
1805 | len = frag->size; | |
1806 | offset = frag->page_offset; | |
1807 | ||
1808 | while(len) { | |
1809 | buffer_info = &tx_ring->buffer_info[i]; | |
1810 | size = min(len, max_per_txd); | |
1811 | #ifdef NETIF_F_TSO | |
1812 | /* Workaround for premature desc write-backs | |
1813 | * in TSO mode. Append 4-byte sentinel desc */ | |
1814 | if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) | |
1815 | size -= 4; | |
1816 | #endif | |
1817 | /* Workaround for potential 82544 hang in PCI-X. | |
1818 | * Avoid terminating buffers within evenly-aligned | |
1819 | * dwords. */ | |
1820 | if(unlikely(adapter->pcix_82544 && | |
1821 | !((unsigned long)(frag->page+offset+size-1) & 4) && | |
1822 | size > 4)) | |
1823 | size -= 4; | |
1824 | ||
1825 | buffer_info->length = size; | |
1826 | buffer_info->dma = | |
1827 | pci_map_page(adapter->pdev, | |
1828 | frag->page, | |
1829 | offset, | |
1830 | size, | |
1831 | PCI_DMA_TODEVICE); | |
1832 | buffer_info->time_stamp = jiffies; | |
1833 | ||
1834 | len -= size; | |
1835 | offset += size; | |
1836 | count++; | |
1837 | if(unlikely(++i == tx_ring->count)) i = 0; | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1842 | tx_ring->buffer_info[i].skb = skb; | |
1843 | tx_ring->buffer_info[first].next_to_watch = i; | |
1844 | ||
1845 | return count; | |
1846 | } | |
1847 | ||
1848 | static inline void | |
1849 | e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags) | |
1850 | { | |
1851 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1852 | struct e1000_tx_desc *tx_desc = NULL; | |
1853 | struct e1000_buffer *buffer_info; | |
1854 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
1855 | unsigned int i; | |
1856 | ||
1857 | if(likely(tx_flags & E1000_TX_FLAGS_TSO)) { | |
1858 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
1859 | E1000_TXD_CMD_TSE; | |
1860 | txd_upper |= (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8; | |
1861 | } | |
1862 | ||
1863 | if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) { | |
1864 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
1865 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
1866 | } | |
1867 | ||
1868 | if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { | |
1869 | txd_lower |= E1000_TXD_CMD_VLE; | |
1870 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
1871 | } | |
1872 | ||
1873 | i = tx_ring->next_to_use; | |
1874 | ||
1875 | while(count--) { | |
1876 | buffer_info = &tx_ring->buffer_info[i]; | |
1877 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
1878 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
1879 | tx_desc->lower.data = | |
1880 | cpu_to_le32(txd_lower | buffer_info->length); | |
1881 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
1882 | if(unlikely(++i == tx_ring->count)) i = 0; | |
1883 | } | |
1884 | ||
1885 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
1886 | ||
1887 | /* Force memory writes to complete before letting h/w | |
1888 | * know there are new descriptors to fetch. (Only | |
1889 | * applicable for weak-ordered memory model archs, | |
1890 | * such as IA-64). */ | |
1891 | wmb(); | |
1892 | ||
1893 | tx_ring->next_to_use = i; | |
1894 | E1000_WRITE_REG(&adapter->hw, TDT, i); | |
1895 | } | |
1896 | ||
1897 | /** | |
1898 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
1899 | * The workaround is to avoid queuing a large packet that would span | |
1900 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
1901 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
1902 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
1903 | * to the beginning of the Tx FIFO. | |
1904 | **/ | |
1905 | ||
1906 | #define E1000_FIFO_HDR 0x10 | |
1907 | #define E1000_82547_PAD_LEN 0x3E0 | |
1908 | ||
1909 | static inline int | |
1910 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1911 | { | |
1912 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
1913 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1914 | ||
1915 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
1916 | ||
1917 | if(adapter->link_duplex != HALF_DUPLEX) | |
1918 | goto no_fifo_stall_required; | |
1919 | ||
1920 | if(atomic_read(&adapter->tx_fifo_stall)) | |
1921 | return 1; | |
1922 | ||
1923 | if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { | |
1924 | atomic_set(&adapter->tx_fifo_stall, 1); | |
1925 | return 1; | |
1926 | } | |
1927 | ||
1928 | no_fifo_stall_required: | |
1929 | adapter->tx_fifo_head += skb_fifo_len; | |
1930 | if(adapter->tx_fifo_head >= adapter->tx_fifo_size) | |
1931 | adapter->tx_fifo_head -= adapter->tx_fifo_size; | |
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
1936 | static int | |
1937 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1938 | { | |
1939 | struct e1000_adapter *adapter = netdev->priv; | |
1940 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; | |
1941 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
1942 | unsigned int tx_flags = 0; | |
1943 | unsigned int len = skb->len; | |
1944 | unsigned long flags; | |
1945 | unsigned int nr_frags = 0; | |
1946 | unsigned int mss = 0; | |
1947 | int count = 0; | |
1948 | int tso; | |
1949 | unsigned int f; | |
1950 | len -= skb->data_len; | |
1951 | ||
1952 | if(unlikely(skb->len <= 0)) { | |
1953 | dev_kfree_skb_any(skb); | |
1954 | return NETDEV_TX_OK; | |
1955 | } | |
1956 | ||
1957 | #ifdef NETIF_F_TSO | |
1958 | mss = skb_shinfo(skb)->tso_size; | |
1959 | /* The controller does a simple calculation to | |
1960 | * make sure there is enough room in the FIFO before | |
1961 | * initiating the DMA for each buffer. The calc is: | |
1962 | * 4 = ceil(buffer len/mss). To make sure we don't | |
1963 | * overrun the FIFO, adjust the max buffer len if mss | |
1964 | * drops. */ | |
1965 | if(mss) { | |
1966 | max_per_txd = min(mss << 2, max_per_txd); | |
1967 | max_txd_pwr = fls(max_per_txd) - 1; | |
1968 | } | |
1969 | ||
1970 | if((mss) || (skb->ip_summed == CHECKSUM_HW)) | |
1971 | count++; | |
1972 | count++; /* for sentinel desc */ | |
1973 | #else | |
1974 | if(skb->ip_summed == CHECKSUM_HW) | |
1975 | count++; | |
1976 | #endif | |
1977 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
1978 | ||
1979 | if(adapter->pcix_82544) | |
1980 | count++; | |
1981 | ||
1982 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1983 | for(f = 0; f < nr_frags; f++) | |
1984 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
1985 | max_txd_pwr); | |
1986 | if(adapter->pcix_82544) | |
1987 | count += nr_frags; | |
1988 | ||
1989 | local_irq_save(flags); | |
1990 | if (!spin_trylock(&adapter->tx_lock)) { | |
1991 | /* Collision - tell upper layer to requeue */ | |
1992 | local_irq_restore(flags); | |
1993 | return NETDEV_TX_LOCKED; | |
1994 | } | |
1995 | ||
1996 | /* need: count + 2 desc gap to keep tail from touching | |
1997 | * head, otherwise try next time */ | |
1998 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2)) { | |
1999 | netif_stop_queue(netdev); | |
2000 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2001 | return NETDEV_TX_BUSY; | |
2002 | } | |
2003 | ||
2004 | if(unlikely(adapter->hw.mac_type == e1000_82547)) { | |
2005 | if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
2006 | netif_stop_queue(netdev); | |
2007 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
2008 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2009 | return NETDEV_TX_BUSY; | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
2014 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
2015 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2016 | } | |
2017 | ||
2018 | first = adapter->tx_ring.next_to_use; | |
2019 | ||
2020 | tso = e1000_tso(adapter, skb); | |
2021 | if (tso < 0) { | |
2022 | dev_kfree_skb_any(skb); | |
2023 | return NETDEV_TX_OK; | |
2024 | } | |
2025 | ||
2026 | if (likely(tso)) | |
2027 | tx_flags |= E1000_TX_FLAGS_TSO; | |
2028 | else if(likely(e1000_tx_csum(adapter, skb))) | |
2029 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
2030 | ||
2031 | e1000_tx_queue(adapter, | |
2032 | e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss), | |
2033 | tx_flags); | |
2034 | ||
2035 | netdev->trans_start = jiffies; | |
2036 | ||
2037 | /* Make sure there is space in the ring for the next send. */ | |
2038 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2)) | |
2039 | netif_stop_queue(netdev); | |
2040 | ||
2041 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2042 | return NETDEV_TX_OK; | |
2043 | } | |
2044 | ||
2045 | /** | |
2046 | * e1000_tx_timeout - Respond to a Tx Hang | |
2047 | * @netdev: network interface device structure | |
2048 | **/ | |
2049 | ||
2050 | static void | |
2051 | e1000_tx_timeout(struct net_device *netdev) | |
2052 | { | |
2053 | struct e1000_adapter *adapter = netdev->priv; | |
2054 | ||
2055 | /* Do the reset outside of interrupt context */ | |
2056 | schedule_work(&adapter->tx_timeout_task); | |
2057 | } | |
2058 | ||
2059 | static void | |
2060 | e1000_tx_timeout_task(struct net_device *netdev) | |
2061 | { | |
2062 | struct e1000_adapter *adapter = netdev->priv; | |
2063 | ||
2064 | e1000_down(adapter); | |
2065 | e1000_up(adapter); | |
2066 | } | |
2067 | ||
2068 | /** | |
2069 | * e1000_get_stats - Get System Network Statistics | |
2070 | * @netdev: network interface device structure | |
2071 | * | |
2072 | * Returns the address of the device statistics structure. | |
2073 | * The statistics are actually updated from the timer callback. | |
2074 | **/ | |
2075 | ||
2076 | static struct net_device_stats * | |
2077 | e1000_get_stats(struct net_device *netdev) | |
2078 | { | |
2079 | struct e1000_adapter *adapter = netdev->priv; | |
2080 | ||
2081 | e1000_update_stats(adapter); | |
2082 | return &adapter->net_stats; | |
2083 | } | |
2084 | ||
2085 | /** | |
2086 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
2087 | * @netdev: network interface device structure | |
2088 | * @new_mtu: new value for maximum frame size | |
2089 | * | |
2090 | * Returns 0 on success, negative on failure | |
2091 | **/ | |
2092 | ||
2093 | static int | |
2094 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
2095 | { | |
2096 | struct e1000_adapter *adapter = netdev->priv; | |
2097 | int old_mtu = adapter->rx_buffer_len; | |
2098 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
2099 | ||
2100 | if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || | |
2101 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2102 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
2103 | return -EINVAL; | |
2104 | } | |
2105 | ||
2106 | if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) { | |
2107 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2108 | ||
2109 | } else if(adapter->hw.mac_type < e1000_82543) { | |
2110 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n"); | |
2111 | return -EINVAL; | |
2112 | ||
2113 | } else if(max_frame <= E1000_RXBUFFER_4096) { | |
2114 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
2115 | ||
2116 | } else if(max_frame <= E1000_RXBUFFER_8192) { | |
2117 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
2118 | ||
2119 | } else { | |
2120 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
2121 | } | |
2122 | ||
2123 | if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) { | |
2124 | e1000_down(adapter); | |
2125 | e1000_up(adapter); | |
2126 | } | |
2127 | ||
2128 | netdev->mtu = new_mtu; | |
2129 | adapter->hw.max_frame_size = max_frame; | |
2130 | ||
2131 | return 0; | |
2132 | } | |
2133 | ||
2134 | /** | |
2135 | * e1000_update_stats - Update the board statistics counters | |
2136 | * @adapter: board private structure | |
2137 | **/ | |
2138 | ||
2139 | void | |
2140 | e1000_update_stats(struct e1000_adapter *adapter) | |
2141 | { | |
2142 | struct e1000_hw *hw = &adapter->hw; | |
2143 | unsigned long flags; | |
2144 | uint16_t phy_tmp; | |
2145 | ||
2146 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
2147 | ||
2148 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2149 | ||
2150 | /* these counters are modified from e1000_adjust_tbi_stats, | |
2151 | * called from the interrupt context, so they must only | |
2152 | * be written while holding adapter->stats_lock | |
2153 | */ | |
2154 | ||
2155 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
2156 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
2157 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
2158 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
2159 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
2160 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
2161 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
2162 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
2163 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
2164 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
2165 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
2166 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
2167 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
2168 | ||
2169 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
2170 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
2171 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
2172 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
2173 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
2174 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
2175 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
2176 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
2177 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
2178 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
2179 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
2180 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
2181 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
2182 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
2183 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
2184 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
2185 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
2186 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
2187 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
2188 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
2189 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
2190 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
2191 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
2192 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
2193 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
2194 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
2195 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
2196 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
2197 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
2198 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
2199 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
2200 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
2201 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
2202 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
2203 | ||
2204 | /* used for adaptive IFS */ | |
2205 | ||
2206 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
2207 | adapter->stats.tpt += hw->tx_packet_delta; | |
2208 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
2209 | adapter->stats.colc += hw->collision_delta; | |
2210 | ||
2211 | if(hw->mac_type >= e1000_82543) { | |
2212 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); | |
2213 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
2214 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
2215 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
2216 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
2217 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
2218 | } | |
2219 | ||
2220 | /* Fill out the OS statistics structure */ | |
2221 | ||
2222 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
2223 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
2224 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
2225 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
2226 | adapter->net_stats.multicast = adapter->stats.mprc; | |
2227 | adapter->net_stats.collisions = adapter->stats.colc; | |
2228 | ||
2229 | /* Rx Errors */ | |
2230 | ||
2231 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
2232 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
6d915757 MC |
2233 | adapter->stats.rlec + adapter->stats.mpc + |
2234 | adapter->stats.cexterr; | |
2235 | adapter->net_stats.rx_dropped = adapter->stats.mpc; | |
1da177e4 LT |
2236 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
2237 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
2238 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
2239 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
2240 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
2241 | ||
2242 | /* Tx Errors */ | |
2243 | ||
2244 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
2245 | adapter->stats.latecol; | |
2246 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
2247 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
2248 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
2249 | ||
2250 | /* Tx Dropped needs to be maintained elsewhere */ | |
2251 | ||
2252 | /* Phy Stats */ | |
2253 | ||
2254 | if(hw->media_type == e1000_media_type_copper) { | |
2255 | if((adapter->link_speed == SPEED_1000) && | |
2256 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { | |
2257 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
2258 | adapter->phy_stats.idle_errors += phy_tmp; | |
2259 | } | |
2260 | ||
2261 | if((hw->mac_type <= e1000_82546) && | |
2262 | (hw->phy_type == e1000_phy_m88) && | |
2263 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
2264 | adapter->phy_stats.receive_errors += phy_tmp; | |
2265 | } | |
2266 | ||
2267 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
2268 | } | |
2269 | ||
2270 | /** | |
2271 | * e1000_intr - Interrupt Handler | |
2272 | * @irq: interrupt number | |
2273 | * @data: pointer to a network interface device structure | |
2274 | * @pt_regs: CPU registers structure | |
2275 | **/ | |
2276 | ||
2277 | static irqreturn_t | |
2278 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
2279 | { | |
2280 | struct net_device *netdev = data; | |
2281 | struct e1000_adapter *adapter = netdev->priv; | |
2282 | struct e1000_hw *hw = &adapter->hw; | |
2283 | uint32_t icr = E1000_READ_REG(hw, ICR); | |
2284 | #ifndef CONFIG_E1000_NAPI | |
2285 | unsigned int i; | |
2286 | #endif | |
2287 | ||
2288 | if(unlikely(!icr)) | |
2289 | return IRQ_NONE; /* Not our interrupt */ | |
2290 | ||
2291 | if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { | |
2292 | hw->get_link_status = 1; | |
2293 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2294 | } | |
2295 | ||
2296 | #ifdef CONFIG_E1000_NAPI | |
2297 | if(likely(netif_rx_schedule_prep(netdev))) { | |
2298 | ||
2299 | /* Disable interrupts and register for poll. The flush | |
2300 | of the posted write is intentionally left out. | |
2301 | */ | |
2302 | ||
2303 | atomic_inc(&adapter->irq_sem); | |
2304 | E1000_WRITE_REG(hw, IMC, ~0); | |
2305 | __netif_rx_schedule(netdev); | |
2306 | } | |
2307 | #else | |
2308 | /* Writing IMC and IMS is needed for 82547. | |
2309 | Due to Hub Link bus being occupied, an interrupt | |
2310 | de-assertion message is not able to be sent. | |
2311 | When an interrupt assertion message is generated later, | |
2312 | two messages are re-ordered and sent out. | |
2313 | That causes APIC to think 82547 is in de-assertion | |
2314 | state, while 82547 is in assertion state, resulting | |
2315 | in dead lock. Writing IMC forces 82547 into | |
2316 | de-assertion state. | |
2317 | */ | |
2318 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){ | |
2319 | atomic_inc(&adapter->irq_sem); | |
2320 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
2321 | } | |
2322 | ||
2323 | for(i = 0; i < E1000_MAX_INTR; i++) | |
2324 | if(unlikely(!e1000_clean_rx_irq(adapter) & | |
2325 | !e1000_clean_tx_irq(adapter))) | |
2326 | break; | |
2327 | ||
2328 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) | |
2329 | e1000_irq_enable(adapter); | |
2330 | #endif | |
2331 | ||
2332 | return IRQ_HANDLED; | |
2333 | } | |
2334 | ||
2335 | #ifdef CONFIG_E1000_NAPI | |
2336 | /** | |
2337 | * e1000_clean - NAPI Rx polling callback | |
2338 | * @adapter: board private structure | |
2339 | **/ | |
2340 | ||
2341 | static int | |
2342 | e1000_clean(struct net_device *netdev, int *budget) | |
2343 | { | |
2344 | struct e1000_adapter *adapter = netdev->priv; | |
2345 | int work_to_do = min(*budget, netdev->quota); | |
2346 | int tx_cleaned; | |
2347 | int work_done = 0; | |
2348 | ||
2349 | tx_cleaned = e1000_clean_tx_irq(adapter); | |
2350 | e1000_clean_rx_irq(adapter, &work_done, work_to_do); | |
2351 | ||
2352 | *budget -= work_done; | |
2353 | netdev->quota -= work_done; | |
2354 | ||
2355 | /* if no Tx and not enough Rx work done, exit the polling mode */ | |
2356 | if((!tx_cleaned && (work_done < work_to_do)) || | |
2357 | !netif_running(netdev)) { | |
2358 | netif_rx_complete(netdev); | |
2359 | e1000_irq_enable(adapter); | |
2360 | return 0; | |
2361 | } | |
2362 | ||
2363 | return 1; | |
2364 | } | |
2365 | ||
2366 | #endif | |
2367 | /** | |
2368 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
2369 | * @adapter: board private structure | |
2370 | **/ | |
2371 | ||
2372 | static boolean_t | |
2373 | e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
2374 | { | |
2375 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
2376 | struct net_device *netdev = adapter->netdev; | |
2377 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
2378 | struct e1000_buffer *buffer_info; | |
2379 | unsigned int i, eop; | |
2380 | boolean_t cleaned = FALSE; | |
2381 | ||
2382 | i = tx_ring->next_to_clean; | |
2383 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2384 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2385 | ||
2386 | while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { | |
2701234f MC |
2387 | /* Premature writeback of Tx descriptors clear (free buffers |
2388 | * and unmap pci_mapping) previous_buffer_info */ | |
1da177e4 | 2389 | if (likely(adapter->previous_buffer_info.skb != NULL)) { |
2701234f | 2390 | e1000_unmap_and_free_tx_resource(adapter, |
1da177e4 LT |
2391 | &adapter->previous_buffer_info); |
2392 | } | |
2393 | ||
2394 | for(cleaned = FALSE; !cleaned; ) { | |
2395 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2396 | buffer_info = &tx_ring->buffer_info[i]; | |
2397 | cleaned = (i == eop); | |
2398 | ||
2701234f MC |
2399 | #ifdef NETIF_F_TSO |
2400 | if (!(netdev->features & NETIF_F_TSO)) { | |
2401 | #endif | |
2402 | e1000_unmap_and_free_tx_resource(adapter, | |
2403 | buffer_info); | |
2404 | #ifdef NETIF_F_TSO | |
1da177e4 | 2405 | } else { |
2701234f MC |
2406 | if (cleaned) { |
2407 | memcpy(&adapter->previous_buffer_info, | |
2408 | buffer_info, | |
2409 | sizeof(struct e1000_buffer)); | |
2410 | memset(buffer_info, 0, | |
2411 | sizeof(struct e1000_buffer)); | |
2412 | } else { | |
2413 | e1000_unmap_and_free_tx_resource( | |
2414 | adapter, buffer_info); | |
2415 | } | |
1da177e4 | 2416 | } |
2701234f | 2417 | #endif |
1da177e4 LT |
2418 | |
2419 | tx_desc->buffer_addr = 0; | |
2420 | tx_desc->lower.data = 0; | |
2421 | tx_desc->upper.data = 0; | |
2422 | ||
2423 | cleaned = (i == eop); | |
2424 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2425 | } | |
2426 | ||
2427 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2428 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2429 | } | |
2430 | ||
2431 | tx_ring->next_to_clean = i; | |
2432 | ||
2433 | spin_lock(&adapter->tx_lock); | |
2434 | ||
2435 | if(unlikely(cleaned && netif_queue_stopped(netdev) && | |
2436 | netif_carrier_ok(netdev))) | |
2437 | netif_wake_queue(netdev); | |
2438 | ||
2439 | spin_unlock(&adapter->tx_lock); | |
2440 | ||
2441 | if(adapter->detect_tx_hung) { | |
2442 | /* detect a transmit hang in hardware, this serializes the | |
2443 | * check with the clearing of time_stamp and movement of i */ | |
2444 | adapter->detect_tx_hung = FALSE; | |
70b8f1e1 MC |
2445 | if (tx_ring->buffer_info[i].dma && |
2446 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) | |
2447 | && !(E1000_READ_REG(&adapter->hw, STATUS) & | |
2448 | E1000_STATUS_TXOFF)) { | |
2449 | ||
2450 | /* detected Tx unit hang */ | |
2451 | i = tx_ring->next_to_clean; | |
2452 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2453 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2454 | DPRINTK(TX_ERR, ERR, "Detected Tx Unit Hang\n" | |
2455 | " TDH <%x>\n" | |
2456 | " TDT <%x>\n" | |
2457 | " next_to_use <%x>\n" | |
2458 | " next_to_clean <%x>\n" | |
2459 | "buffer_info[next_to_clean]\n" | |
2460 | " dma <%llx>\n" | |
2461 | " time_stamp <%lx>\n" | |
2462 | " next_to_watch <%x>\n" | |
2463 | " jiffies <%lx>\n" | |
2464 | " next_to_watch.status <%x>\n", | |
2465 | E1000_READ_REG(&adapter->hw, TDH), | |
2466 | E1000_READ_REG(&adapter->hw, TDT), | |
2467 | tx_ring->next_to_use, | |
2468 | i, | |
2469 | tx_ring->buffer_info[i].dma, | |
2470 | tx_ring->buffer_info[i].time_stamp, | |
2471 | eop, | |
2472 | jiffies, | |
2473 | eop_desc->upper.fields.status); | |
1da177e4 | 2474 | netif_stop_queue(netdev); |
70b8f1e1 | 2475 | } |
1da177e4 | 2476 | } |
2701234f MC |
2477 | #ifdef NETIF_F_TSO |
2478 | ||
2479 | if( unlikely(!(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
2480 | time_after(jiffies, adapter->previous_buffer_info.time_stamp + HZ))) | |
2481 | e1000_unmap_and_free_tx_resource( | |
2482 | adapter, &adapter->previous_buffer_info); | |
1da177e4 | 2483 | |
2701234f | 2484 | #endif |
1da177e4 LT |
2485 | return cleaned; |
2486 | } | |
2487 | ||
2488 | /** | |
2489 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2490 | * @adapter: board private structure | |
2491 | * @rx_desc: receive descriptor | |
2492 | * @sk_buff: socket buffer with received data | |
2493 | **/ | |
2494 | ||
2495 | static inline void | |
2496 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2497 | struct e1000_rx_desc *rx_desc, | |
2498 | struct sk_buff *skb) | |
2499 | { | |
2500 | /* 82543 or newer only */ | |
2501 | if(unlikely((adapter->hw.mac_type < e1000_82543) || | |
2502 | /* Ignore Checksum bit is set */ | |
2503 | (rx_desc->status & E1000_RXD_STAT_IXSM) || | |
2504 | /* TCP Checksum has not been calculated */ | |
2505 | (!(rx_desc->status & E1000_RXD_STAT_TCPCS)))) { | |
2506 | skb->ip_summed = CHECKSUM_NONE; | |
2507 | return; | |
2508 | } | |
2509 | ||
2510 | /* At this point we know the hardware did the TCP checksum */ | |
2511 | /* now look at the TCP checksum error bit */ | |
2512 | if(rx_desc->errors & E1000_RXD_ERR_TCPE) { | |
2513 | /* let the stack verify checksum errors */ | |
2514 | skb->ip_summed = CHECKSUM_NONE; | |
2515 | adapter->hw_csum_err++; | |
2516 | } else { | |
2517 | /* TCP checksum is good */ | |
2518 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2519 | adapter->hw_csum_good++; | |
2520 | } | |
2521 | } | |
2522 | ||
2523 | /** | |
2524 | * e1000_clean_rx_irq - Send received data up the network stack | |
2525 | * @adapter: board private structure | |
2526 | **/ | |
2527 | ||
2528 | static boolean_t | |
2529 | #ifdef CONFIG_E1000_NAPI | |
2530 | e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done, | |
2531 | int work_to_do) | |
2532 | #else | |
2533 | e1000_clean_rx_irq(struct e1000_adapter *adapter) | |
2534 | #endif | |
2535 | { | |
2536 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2537 | struct net_device *netdev = adapter->netdev; | |
2538 | struct pci_dev *pdev = adapter->pdev; | |
2539 | struct e1000_rx_desc *rx_desc; | |
2540 | struct e1000_buffer *buffer_info; | |
2541 | struct sk_buff *skb; | |
2542 | unsigned long flags; | |
2543 | uint32_t length; | |
2544 | uint8_t last_byte; | |
2545 | unsigned int i; | |
2546 | boolean_t cleaned = FALSE; | |
2547 | ||
2548 | i = rx_ring->next_to_clean; | |
2549 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2550 | ||
2551 | while(rx_desc->status & E1000_RXD_STAT_DD) { | |
2552 | buffer_info = &rx_ring->buffer_info[i]; | |
2553 | #ifdef CONFIG_E1000_NAPI | |
2554 | if(*work_done >= work_to_do) | |
2555 | break; | |
2556 | (*work_done)++; | |
2557 | #endif | |
2558 | cleaned = TRUE; | |
2559 | ||
2560 | pci_unmap_single(pdev, | |
2561 | buffer_info->dma, | |
2562 | buffer_info->length, | |
2563 | PCI_DMA_FROMDEVICE); | |
2564 | ||
2565 | skb = buffer_info->skb; | |
2566 | length = le16_to_cpu(rx_desc->length); | |
2567 | ||
2568 | if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) { | |
2569 | /* All receives must fit into a single buffer */ | |
2570 | E1000_DBG("%s: Receive packet consumed multiple" | |
2571 | " buffers\n", netdev->name); | |
2572 | dev_kfree_skb_irq(skb); | |
2573 | goto next_desc; | |
2574 | } | |
2575 | ||
2576 | if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { | |
2577 | last_byte = *(skb->data + length - 1); | |
2578 | if(TBI_ACCEPT(&adapter->hw, rx_desc->status, | |
2579 | rx_desc->errors, length, last_byte)) { | |
2580 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2581 | e1000_tbi_adjust_stats(&adapter->hw, | |
2582 | &adapter->stats, | |
2583 | length, skb->data); | |
2584 | spin_unlock_irqrestore(&adapter->stats_lock, | |
2585 | flags); | |
2586 | length--; | |
2587 | } else { | |
2588 | dev_kfree_skb_irq(skb); | |
2589 | goto next_desc; | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | /* Good Receive */ | |
2594 | skb_put(skb, length - ETHERNET_FCS_SIZE); | |
2595 | ||
2596 | /* Receive Checksum Offload */ | |
2597 | e1000_rx_checksum(adapter, rx_desc, skb); | |
2598 | ||
2599 | skb->protocol = eth_type_trans(skb, netdev); | |
2600 | #ifdef CONFIG_E1000_NAPI | |
2601 | if(unlikely(adapter->vlgrp && | |
2602 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2603 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
2604 | le16_to_cpu(rx_desc->special) & | |
2605 | E1000_RXD_SPC_VLAN_MASK); | |
2606 | } else { | |
2607 | netif_receive_skb(skb); | |
2608 | } | |
2609 | #else /* CONFIG_E1000_NAPI */ | |
2610 | if(unlikely(adapter->vlgrp && | |
2611 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2612 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
2613 | le16_to_cpu(rx_desc->special) & | |
2614 | E1000_RXD_SPC_VLAN_MASK); | |
2615 | } else { | |
2616 | netif_rx(skb); | |
2617 | } | |
2618 | #endif /* CONFIG_E1000_NAPI */ | |
2619 | netdev->last_rx = jiffies; | |
2620 | ||
2621 | next_desc: | |
2622 | rx_desc->status = 0; | |
2623 | buffer_info->skb = NULL; | |
2624 | if(unlikely(++i == rx_ring->count)) i = 0; | |
2625 | ||
2626 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2627 | } | |
2628 | ||
2629 | rx_ring->next_to_clean = i; | |
2630 | ||
2631 | e1000_alloc_rx_buffers(adapter); | |
2632 | ||
2633 | return cleaned; | |
2634 | } | |
2635 | ||
2636 | /** | |
2637 | * e1000_alloc_rx_buffers - Replace used receive buffers | |
2638 | * @adapter: address of board private structure | |
2639 | **/ | |
2640 | ||
2641 | static void | |
2642 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter) | |
2643 | { | |
2644 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2645 | struct net_device *netdev = adapter->netdev; | |
2646 | struct pci_dev *pdev = adapter->pdev; | |
2647 | struct e1000_rx_desc *rx_desc; | |
2648 | struct e1000_buffer *buffer_info; | |
2649 | struct sk_buff *skb; | |
2650 | unsigned int i, bufsz; | |
2651 | ||
2652 | i = rx_ring->next_to_use; | |
2653 | buffer_info = &rx_ring->buffer_info[i]; | |
2654 | ||
2655 | while(!buffer_info->skb) { | |
2656 | bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
2657 | ||
2658 | skb = dev_alloc_skb(bufsz); | |
2659 | if(unlikely(!skb)) { | |
2660 | /* Better luck next round */ | |
2661 | break; | |
2662 | } | |
2663 | ||
2664 | /* fix for errata 23, cant cross 64kB boundary */ | |
2665 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
2666 | struct sk_buff *oldskb = skb; | |
2667 | DPRINTK(RX_ERR,ERR, | |
2668 | "skb align check failed: %u bytes at %p\n", | |
2669 | bufsz, skb->data); | |
2670 | /* try again, without freeing the previous */ | |
2671 | skb = dev_alloc_skb(bufsz); | |
2672 | if (!skb) { | |
2673 | dev_kfree_skb(oldskb); | |
2674 | break; | |
2675 | } | |
2676 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
2677 | /* give up */ | |
2678 | dev_kfree_skb(skb); | |
2679 | dev_kfree_skb(oldskb); | |
2680 | break; /* while !buffer_info->skb */ | |
2681 | } else { | |
2682 | /* move on with the new one */ | |
2683 | dev_kfree_skb(oldskb); | |
2684 | } | |
2685 | } | |
2686 | ||
2687 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
2688 | * this will result in a 16 byte aligned IP header after | |
2689 | * the 14 byte MAC header is removed | |
2690 | */ | |
2691 | skb_reserve(skb, NET_IP_ALIGN); | |
2692 | ||
2693 | skb->dev = netdev; | |
2694 | ||
2695 | buffer_info->skb = skb; | |
2696 | buffer_info->length = adapter->rx_buffer_len; | |
2697 | buffer_info->dma = pci_map_single(pdev, | |
2698 | skb->data, | |
2699 | adapter->rx_buffer_len, | |
2700 | PCI_DMA_FROMDEVICE); | |
2701 | ||
2702 | /* fix for errata 23, cant cross 64kB boundary */ | |
2703 | if(!e1000_check_64k_bound(adapter, | |
2704 | (void *)(unsigned long)buffer_info->dma, | |
2705 | adapter->rx_buffer_len)) { | |
2706 | DPRINTK(RX_ERR,ERR, | |
2707 | "dma align check failed: %u bytes at %ld\n", | |
2708 | adapter->rx_buffer_len, (unsigned long)buffer_info->dma); | |
2709 | ||
2710 | dev_kfree_skb(skb); | |
2711 | buffer_info->skb = NULL; | |
2712 | ||
2713 | pci_unmap_single(pdev, | |
2714 | buffer_info->dma, | |
2715 | adapter->rx_buffer_len, | |
2716 | PCI_DMA_FROMDEVICE); | |
2717 | ||
2718 | break; /* while !buffer_info->skb */ | |
2719 | } | |
2720 | ||
2721 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2722 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2723 | ||
2724 | if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { | |
2725 | /* Force memory writes to complete before letting h/w | |
2726 | * know there are new descriptors to fetch. (Only | |
2727 | * applicable for weak-ordered memory model archs, | |
2728 | * such as IA-64). */ | |
2729 | wmb(); | |
2730 | ||
2731 | E1000_WRITE_REG(&adapter->hw, RDT, i); | |
2732 | } | |
2733 | ||
2734 | if(unlikely(++i == rx_ring->count)) i = 0; | |
2735 | buffer_info = &rx_ring->buffer_info[i]; | |
2736 | } | |
2737 | ||
2738 | rx_ring->next_to_use = i; | |
2739 | } | |
2740 | ||
2741 | /** | |
2742 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
2743 | * @adapter: | |
2744 | **/ | |
2745 | ||
2746 | static void | |
2747 | e1000_smartspeed(struct e1000_adapter *adapter) | |
2748 | { | |
2749 | uint16_t phy_status; | |
2750 | uint16_t phy_ctrl; | |
2751 | ||
2752 | if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || | |
2753 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) | |
2754 | return; | |
2755 | ||
2756 | if(adapter->smartspeed == 0) { | |
2757 | /* If Master/Slave config fault is asserted twice, | |
2758 | * we assume back-to-back */ | |
2759 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
2760 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
2761 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
2762 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
2763 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
2764 | if(phy_ctrl & CR_1000T_MS_ENABLE) { | |
2765 | phy_ctrl &= ~CR_1000T_MS_ENABLE; | |
2766 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
2767 | phy_ctrl); | |
2768 | adapter->smartspeed++; | |
2769 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
2770 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, | |
2771 | &phy_ctrl)) { | |
2772 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
2773 | MII_CR_RESTART_AUTO_NEG); | |
2774 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
2775 | phy_ctrl); | |
2776 | } | |
2777 | } | |
2778 | return; | |
2779 | } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { | |
2780 | /* If still no link, perhaps using 2/3 pair cable */ | |
2781 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
2782 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
2783 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
2784 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
2785 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { | |
2786 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
2787 | MII_CR_RESTART_AUTO_NEG); | |
2788 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
2789 | } | |
2790 | } | |
2791 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
2792 | if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX) | |
2793 | adapter->smartspeed = 0; | |
2794 | } | |
2795 | ||
2796 | /** | |
2797 | * e1000_ioctl - | |
2798 | * @netdev: | |
2799 | * @ifreq: | |
2800 | * @cmd: | |
2801 | **/ | |
2802 | ||
2803 | static int | |
2804 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2805 | { | |
2806 | switch (cmd) { | |
2807 | case SIOCGMIIPHY: | |
2808 | case SIOCGMIIREG: | |
2809 | case SIOCSMIIREG: | |
2810 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
2811 | default: | |
2812 | return -EOPNOTSUPP; | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | /** | |
2817 | * e1000_mii_ioctl - | |
2818 | * @netdev: | |
2819 | * @ifreq: | |
2820 | * @cmd: | |
2821 | **/ | |
2822 | ||
2823 | static int | |
2824 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2825 | { | |
2826 | struct e1000_adapter *adapter = netdev->priv; | |
2827 | struct mii_ioctl_data *data = if_mii(ifr); | |
2828 | int retval; | |
2829 | uint16_t mii_reg; | |
2830 | uint16_t spddplx; | |
2831 | ||
2832 | if(adapter->hw.media_type != e1000_media_type_copper) | |
2833 | return -EOPNOTSUPP; | |
2834 | ||
2835 | switch (cmd) { | |
2836 | case SIOCGMIIPHY: | |
2837 | data->phy_id = adapter->hw.phy_addr; | |
2838 | break; | |
2839 | case SIOCGMIIREG: | |
2840 | if (!capable(CAP_NET_ADMIN)) | |
2841 | return -EPERM; | |
2842 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, | |
2843 | &data->val_out)) | |
2844 | return -EIO; | |
2845 | break; | |
2846 | case SIOCSMIIREG: | |
2847 | if (!capable(CAP_NET_ADMIN)) | |
2848 | return -EPERM; | |
2849 | if (data->reg_num & ~(0x1F)) | |
2850 | return -EFAULT; | |
2851 | mii_reg = data->val_in; | |
2852 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, | |
2853 | mii_reg)) | |
2854 | return -EIO; | |
2855 | if (adapter->hw.phy_type == e1000_phy_m88) { | |
2856 | switch (data->reg_num) { | |
2857 | case PHY_CTRL: | |
2858 | if(mii_reg & MII_CR_POWER_DOWN) | |
2859 | break; | |
2860 | if(mii_reg & MII_CR_AUTO_NEG_EN) { | |
2861 | adapter->hw.autoneg = 1; | |
2862 | adapter->hw.autoneg_advertised = 0x2F; | |
2863 | } else { | |
2864 | if (mii_reg & 0x40) | |
2865 | spddplx = SPEED_1000; | |
2866 | else if (mii_reg & 0x2000) | |
2867 | spddplx = SPEED_100; | |
2868 | else | |
2869 | spddplx = SPEED_10; | |
2870 | spddplx += (mii_reg & 0x100) | |
2871 | ? FULL_DUPLEX : | |
2872 | HALF_DUPLEX; | |
2873 | retval = e1000_set_spd_dplx(adapter, | |
2874 | spddplx); | |
2875 | if(retval) | |
2876 | return retval; | |
2877 | } | |
2878 | if(netif_running(adapter->netdev)) { | |
2879 | e1000_down(adapter); | |
2880 | e1000_up(adapter); | |
2881 | } else | |
2882 | e1000_reset(adapter); | |
2883 | break; | |
2884 | case M88E1000_PHY_SPEC_CTRL: | |
2885 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
2886 | if (e1000_phy_reset(&adapter->hw)) | |
2887 | return -EIO; | |
2888 | break; | |
2889 | } | |
2890 | } else { | |
2891 | switch (data->reg_num) { | |
2892 | case PHY_CTRL: | |
2893 | if(mii_reg & MII_CR_POWER_DOWN) | |
2894 | break; | |
2895 | if(netif_running(adapter->netdev)) { | |
2896 | e1000_down(adapter); | |
2897 | e1000_up(adapter); | |
2898 | } else | |
2899 | e1000_reset(adapter); | |
2900 | break; | |
2901 | } | |
2902 | } | |
2903 | break; | |
2904 | default: | |
2905 | return -EOPNOTSUPP; | |
2906 | } | |
2907 | return E1000_SUCCESS; | |
2908 | } | |
2909 | ||
2910 | void | |
2911 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
2912 | { | |
2913 | struct e1000_adapter *adapter = hw->back; | |
2914 | ||
2915 | int ret; | |
2916 | ret = pci_set_mwi(adapter->pdev); | |
2917 | } | |
2918 | ||
2919 | void | |
2920 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
2921 | { | |
2922 | struct e1000_adapter *adapter = hw->back; | |
2923 | ||
2924 | pci_clear_mwi(adapter->pdev); | |
2925 | } | |
2926 | ||
2927 | void | |
2928 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
2929 | { | |
2930 | struct e1000_adapter *adapter = hw->back; | |
2931 | ||
2932 | pci_read_config_word(adapter->pdev, reg, value); | |
2933 | } | |
2934 | ||
2935 | void | |
2936 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
2937 | { | |
2938 | struct e1000_adapter *adapter = hw->back; | |
2939 | ||
2940 | pci_write_config_word(adapter->pdev, reg, *value); | |
2941 | } | |
2942 | ||
2943 | uint32_t | |
2944 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
2945 | { | |
2946 | return inl(port); | |
2947 | } | |
2948 | ||
2949 | void | |
2950 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
2951 | { | |
2952 | outl(value, port); | |
2953 | } | |
2954 | ||
2955 | static void | |
2956 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2957 | { | |
2958 | struct e1000_adapter *adapter = netdev->priv; | |
2959 | uint32_t ctrl, rctl; | |
2960 | ||
2961 | e1000_irq_disable(adapter); | |
2962 | adapter->vlgrp = grp; | |
2963 | ||
2964 | if(grp) { | |
2965 | /* enable VLAN tag insert/strip */ | |
2966 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
2967 | ctrl |= E1000_CTRL_VME; | |
2968 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
2969 | ||
2970 | /* enable VLAN receive filtering */ | |
2971 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2972 | rctl |= E1000_RCTL_VFE; | |
2973 | rctl &= ~E1000_RCTL_CFIEN; | |
2974 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2975 | } else { | |
2976 | /* disable VLAN tag insert/strip */ | |
2977 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
2978 | ctrl &= ~E1000_CTRL_VME; | |
2979 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
2980 | ||
2981 | /* disable VLAN filtering */ | |
2982 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2983 | rctl &= ~E1000_RCTL_VFE; | |
2984 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2985 | } | |
2986 | ||
2987 | e1000_irq_enable(adapter); | |
2988 | } | |
2989 | ||
2990 | static void | |
2991 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
2992 | { | |
2993 | struct e1000_adapter *adapter = netdev->priv; | |
2994 | uint32_t vfta, index; | |
2995 | ||
2996 | /* add VID to filter table */ | |
2997 | index = (vid >> 5) & 0x7F; | |
2998 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2999 | vfta |= (1 << (vid & 0x1F)); | |
3000 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3001 | } | |
3002 | ||
3003 | static void | |
3004 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
3005 | { | |
3006 | struct e1000_adapter *adapter = netdev->priv; | |
3007 | uint32_t vfta, index; | |
3008 | ||
3009 | e1000_irq_disable(adapter); | |
3010 | ||
3011 | if(adapter->vlgrp) | |
3012 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
3013 | ||
3014 | e1000_irq_enable(adapter); | |
3015 | ||
3016 | /* remove VID from filter table */ | |
3017 | index = (vid >> 5) & 0x7F; | |
3018 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
3019 | vfta &= ~(1 << (vid & 0x1F)); | |
3020 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3021 | } | |
3022 | ||
3023 | static void | |
3024 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
3025 | { | |
3026 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
3027 | ||
3028 | if(adapter->vlgrp) { | |
3029 | uint16_t vid; | |
3030 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
3031 | if(!adapter->vlgrp->vlan_devices[vid]) | |
3032 | continue; | |
3033 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
3034 | } | |
3035 | } | |
3036 | } | |
3037 | ||
3038 | int | |
3039 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
3040 | { | |
3041 | adapter->hw.autoneg = 0; | |
3042 | ||
3043 | switch(spddplx) { | |
3044 | case SPEED_10 + DUPLEX_HALF: | |
3045 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
3046 | break; | |
3047 | case SPEED_10 + DUPLEX_FULL: | |
3048 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
3049 | break; | |
3050 | case SPEED_100 + DUPLEX_HALF: | |
3051 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
3052 | break; | |
3053 | case SPEED_100 + DUPLEX_FULL: | |
3054 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
3055 | break; | |
3056 | case SPEED_1000 + DUPLEX_FULL: | |
3057 | adapter->hw.autoneg = 1; | |
3058 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
3059 | break; | |
3060 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
3061 | default: | |
3062 | DPRINTK(PROBE, ERR, | |
3063 | "Unsupported Speed/Duplexity configuration\n"); | |
3064 | return -EINVAL; | |
3065 | } | |
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | static int | |
3070 | e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p) | |
3071 | { | |
3072 | struct pci_dev *pdev = NULL; | |
3073 | ||
3074 | switch(event) { | |
3075 | case SYS_DOWN: | |
3076 | case SYS_HALT: | |
3077 | case SYS_POWER_OFF: | |
3078 | while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) { | |
3079 | if(pci_dev_driver(pdev) == &e1000_driver) | |
3080 | e1000_suspend(pdev, 3); | |
3081 | } | |
3082 | } | |
3083 | return NOTIFY_DONE; | |
3084 | } | |
3085 | ||
3086 | static int | |
3087 | e1000_suspend(struct pci_dev *pdev, uint32_t state) | |
3088 | { | |
3089 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3090 | struct e1000_adapter *adapter = netdev->priv; | |
3091 | uint32_t ctrl, ctrl_ext, rctl, manc, status; | |
3092 | uint32_t wufc = adapter->wol; | |
3093 | ||
3094 | netif_device_detach(netdev); | |
3095 | ||
3096 | if(netif_running(netdev)) | |
3097 | e1000_down(adapter); | |
3098 | ||
3099 | status = E1000_READ_REG(&adapter->hw, STATUS); | |
3100 | if(status & E1000_STATUS_LU) | |
3101 | wufc &= ~E1000_WUFC_LNKC; | |
3102 | ||
3103 | if(wufc) { | |
3104 | e1000_setup_rctl(adapter); | |
3105 | e1000_set_multi(netdev); | |
3106 | ||
3107 | /* turn on all-multi mode if wake on multicast is enabled */ | |
3108 | if(adapter->wol & E1000_WUFC_MC) { | |
3109 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3110 | rctl |= E1000_RCTL_MPE; | |
3111 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
3112 | } | |
3113 | ||
3114 | if(adapter->hw.mac_type >= e1000_82540) { | |
3115 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3116 | /* advertise wake from D3Cold */ | |
3117 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
3118 | /* phy power management enable */ | |
3119 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
3120 | ctrl |= E1000_CTRL_ADVD3WUC | | |
3121 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
3122 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3123 | } | |
3124 | ||
3125 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
3126 | adapter->hw.media_type == e1000_media_type_internal_serdes) { | |
3127 | /* keep the laser running in D3 */ | |
3128 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
3129 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
3130 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
3131 | } | |
3132 | ||
3133 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); | |
3134 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
3135 | pci_enable_wake(pdev, 3, 1); | |
3136 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3137 | } else { | |
3138 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
3139 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
3140 | pci_enable_wake(pdev, 3, 0); | |
3141 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3142 | } | |
3143 | ||
3144 | pci_save_state(pdev); | |
3145 | ||
3146 | if(adapter->hw.mac_type >= e1000_82540 && | |
3147 | adapter->hw.media_type == e1000_media_type_copper) { | |
3148 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3149 | if(manc & E1000_MANC_SMBUS_EN) { | |
3150 | manc |= E1000_MANC_ARP_EN; | |
3151 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3152 | pci_enable_wake(pdev, 3, 1); | |
3153 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3154 | } | |
3155 | } | |
3156 | ||
3157 | pci_disable_device(pdev); | |
3158 | ||
3159 | state = (state > 0) ? 3 : 0; | |
3160 | pci_set_power_state(pdev, state); | |
3161 | ||
3162 | return 0; | |
3163 | } | |
3164 | ||
3165 | #ifdef CONFIG_PM | |
3166 | static int | |
3167 | e1000_resume(struct pci_dev *pdev) | |
3168 | { | |
3169 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3170 | struct e1000_adapter *adapter = netdev->priv; | |
3171 | uint32_t manc, ret; | |
3172 | ||
3173 | pci_set_power_state(pdev, 0); | |
3174 | pci_restore_state(pdev); | |
3175 | ret = pci_enable_device(pdev); | |
a4cb847d | 3176 | pci_set_master(pdev); |
1da177e4 LT |
3177 | |
3178 | pci_enable_wake(pdev, 3, 0); | |
3179 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3180 | ||
3181 | e1000_reset(adapter); | |
3182 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
3183 | ||
3184 | if(netif_running(netdev)) | |
3185 | e1000_up(adapter); | |
3186 | ||
3187 | netif_device_attach(netdev); | |
3188 | ||
3189 | if(adapter->hw.mac_type >= e1000_82540 && | |
3190 | adapter->hw.media_type == e1000_media_type_copper) { | |
3191 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3192 | manc &= ~(E1000_MANC_ARP_EN); | |
3193 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3194 | } | |
3195 | ||
3196 | return 0; | |
3197 | } | |
3198 | #endif | |
3199 | ||
3200 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3201 | /* | |
3202 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3203 | * without having to re-enable interrupts. It's not called while | |
3204 | * the interrupt routine is executing. | |
3205 | */ | |
3206 | static void | |
3207 | e1000_netpoll (struct net_device *netdev) | |
3208 | { | |
3209 | struct e1000_adapter *adapter = netdev->priv; | |
3210 | disable_irq(adapter->pdev->irq); | |
3211 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
3212 | enable_irq(adapter->pdev->irq); | |
3213 | } | |
3214 | #endif | |
3215 | ||
3216 | /* e1000_main.c */ |