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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); | |
2d7edb92 MC |
158 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
159 | int *work_done, int work_to_do); | |
1da177e4 LT |
160 | #else |
161 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter); | |
2d7edb92 | 162 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter); |
1da177e4 LT |
163 | #endif |
164 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter); | |
2d7edb92 | 165 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter); |
1da177e4 LT |
166 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
167 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
168 | int cmd); | |
169 | void e1000_set_ethtool_ops(struct net_device *netdev); | |
170 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); | |
171 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
172 | static void e1000_tx_timeout(struct net_device *dev); | |
173 | static void e1000_tx_timeout_task(struct net_device *dev); | |
174 | static void e1000_smartspeed(struct e1000_adapter *adapter); | |
175 | static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, | |
176 | struct sk_buff *skb); | |
177 | ||
178 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
179 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
180 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
181 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
182 | ||
183 | static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr); | |
184 | static int e1000_suspend(struct pci_dev *pdev, uint32_t state); | |
185 | #ifdef CONFIG_PM | |
186 | static int e1000_resume(struct pci_dev *pdev); | |
187 | #endif | |
188 | ||
189 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
190 | /* for netdump / net console */ | |
191 | static void e1000_netpoll (struct net_device *netdev); | |
192 | #endif | |
193 | ||
194 | struct notifier_block e1000_notifier_reboot = { | |
195 | .notifier_call = e1000_notify_reboot, | |
196 | .next = NULL, | |
197 | .priority = 0 | |
198 | }; | |
199 | ||
200 | /* Exported from other modules */ | |
201 | ||
202 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
203 | ||
204 | static struct pci_driver e1000_driver = { | |
205 | .name = e1000_driver_name, | |
206 | .id_table = e1000_pci_tbl, | |
207 | .probe = e1000_probe, | |
208 | .remove = __devexit_p(e1000_remove), | |
209 | /* Power Managment Hooks */ | |
210 | #ifdef CONFIG_PM | |
211 | .suspend = e1000_suspend, | |
212 | .resume = e1000_resume | |
213 | #endif | |
214 | }; | |
215 | ||
216 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
217 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
218 | MODULE_LICENSE("GPL"); | |
219 | MODULE_VERSION(DRV_VERSION); | |
220 | ||
221 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
222 | module_param(debug, int, 0); | |
223 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
224 | ||
225 | /** | |
226 | * e1000_init_module - Driver Registration Routine | |
227 | * | |
228 | * e1000_init_module is the first routine called when the driver is | |
229 | * loaded. All it does is register with the PCI subsystem. | |
230 | **/ | |
231 | ||
232 | static int __init | |
233 | e1000_init_module(void) | |
234 | { | |
235 | int ret; | |
236 | printk(KERN_INFO "%s - version %s\n", | |
237 | e1000_driver_string, e1000_driver_version); | |
238 | ||
239 | printk(KERN_INFO "%s\n", e1000_copyright); | |
240 | ||
241 | ret = pci_module_init(&e1000_driver); | |
242 | if(ret >= 0) { | |
243 | register_reboot_notifier(&e1000_notifier_reboot); | |
244 | } | |
245 | return ret; | |
246 | } | |
247 | ||
248 | module_init(e1000_init_module); | |
249 | ||
250 | /** | |
251 | * e1000_exit_module - Driver Exit Cleanup Routine | |
252 | * | |
253 | * e1000_exit_module is called just before the driver is removed | |
254 | * from memory. | |
255 | **/ | |
256 | ||
257 | static void __exit | |
258 | e1000_exit_module(void) | |
259 | { | |
260 | unregister_reboot_notifier(&e1000_notifier_reboot); | |
261 | pci_unregister_driver(&e1000_driver); | |
262 | } | |
263 | ||
264 | module_exit(e1000_exit_module); | |
265 | ||
266 | /** | |
267 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
268 | * @adapter: board private structure | |
269 | **/ | |
270 | ||
271 | static inline void | |
272 | e1000_irq_disable(struct e1000_adapter *adapter) | |
273 | { | |
274 | atomic_inc(&adapter->irq_sem); | |
275 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
276 | E1000_WRITE_FLUSH(&adapter->hw); | |
277 | synchronize_irq(adapter->pdev->irq); | |
278 | } | |
279 | ||
280 | /** | |
281 | * e1000_irq_enable - Enable default interrupt generation settings | |
282 | * @adapter: board private structure | |
283 | **/ | |
284 | ||
285 | static inline void | |
286 | e1000_irq_enable(struct e1000_adapter *adapter) | |
287 | { | |
288 | if(likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
289 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); | |
290 | E1000_WRITE_FLUSH(&adapter->hw); | |
291 | } | |
292 | } | |
2d7edb92 MC |
293 | void |
294 | e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
295 | { | |
296 | struct net_device *netdev = adapter->netdev; | |
297 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
298 | uint16_t old_vid = adapter->mng_vlan_id; | |
299 | if(adapter->vlgrp) { | |
300 | if(!adapter->vlgrp->vlan_devices[vid]) { | |
301 | if(adapter->hw.mng_cookie.status & | |
302 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
303 | e1000_vlan_rx_add_vid(netdev, vid); | |
304 | adapter->mng_vlan_id = vid; | |
305 | } else | |
306 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
307 | ||
308 | if((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
309 | (vid != old_vid) && | |
310 | !adapter->vlgrp->vlan_devices[old_vid]) | |
311 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
312 | } | |
313 | } | |
314 | } | |
315 | ||
1da177e4 LT |
316 | int |
317 | e1000_up(struct e1000_adapter *adapter) | |
318 | { | |
319 | struct net_device *netdev = adapter->netdev; | |
320 | int err; | |
321 | ||
322 | /* hardware has been reset, we need to reload some things */ | |
323 | ||
324 | /* Reset the PHY if it was previously powered down */ | |
325 | if(adapter->hw.media_type == e1000_media_type_copper) { | |
326 | uint16_t mii_reg; | |
327 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
328 | if(mii_reg & MII_CR_POWER_DOWN) | |
329 | e1000_phy_reset(&adapter->hw); | |
330 | } | |
331 | ||
332 | e1000_set_multi(netdev); | |
333 | ||
334 | e1000_restore_vlan(adapter); | |
335 | ||
336 | e1000_configure_tx(adapter); | |
337 | e1000_setup_rctl(adapter); | |
338 | e1000_configure_rx(adapter); | |
2d7edb92 | 339 | adapter->alloc_rx_buf(adapter); |
1da177e4 | 340 | |
fa4f7ef3 MC |
341 | #ifdef CONFIG_PCI_MSI |
342 | if(adapter->hw.mac_type > e1000_82547_rev_2) { | |
343 | adapter->have_msi = TRUE; | |
344 | if((err = pci_enable_msi(adapter->pdev))) { | |
345 | DPRINTK(PROBE, ERR, | |
346 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
347 | adapter->have_msi = FALSE; | |
348 | } | |
349 | } | |
350 | #endif | |
1da177e4 LT |
351 | if((err = request_irq(adapter->pdev->irq, &e1000_intr, |
352 | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
353 | netdev->name, netdev))) | |
354 | return err; | |
355 | ||
356 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
357 | |
358 | #ifdef CONFIG_E1000_NAPI | |
359 | netif_poll_enable(netdev); | |
360 | #endif | |
5de55624 MC |
361 | e1000_irq_enable(adapter); |
362 | ||
1da177e4 LT |
363 | return 0; |
364 | } | |
365 | ||
366 | void | |
367 | e1000_down(struct e1000_adapter *adapter) | |
368 | { | |
369 | struct net_device *netdev = adapter->netdev; | |
370 | ||
371 | e1000_irq_disable(adapter); | |
372 | free_irq(adapter->pdev->irq, netdev); | |
fa4f7ef3 MC |
373 | #ifdef CONFIG_PCI_MSI |
374 | if(adapter->hw.mac_type > e1000_82547_rev_2 && | |
375 | adapter->have_msi == TRUE) | |
376 | pci_disable_msi(adapter->pdev); | |
377 | #endif | |
1da177e4 LT |
378 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
379 | del_timer_sync(&adapter->watchdog_timer); | |
380 | del_timer_sync(&adapter->phy_info_timer); | |
381 | ||
382 | #ifdef CONFIG_E1000_NAPI | |
383 | netif_poll_disable(netdev); | |
384 | #endif | |
385 | adapter->link_speed = 0; | |
386 | adapter->link_duplex = 0; | |
387 | netif_carrier_off(netdev); | |
388 | netif_stop_queue(netdev); | |
389 | ||
390 | e1000_reset(adapter); | |
391 | e1000_clean_tx_ring(adapter); | |
392 | e1000_clean_rx_ring(adapter); | |
393 | ||
394 | /* If WoL is not enabled | |
2d7edb92 | 395 | * and management mode is not IAMT |
1da177e4 | 396 | * Power down the PHY so no link is implied when interface is down */ |
2d7edb92 MC |
397 | if(!adapter->wol && adapter->hw.mac_type >= e1000_82540 && |
398 | adapter->hw.media_type == e1000_media_type_copper && | |
399 | !e1000_check_mng_mode(&adapter->hw) && | |
400 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN)) { | |
1da177e4 LT |
401 | uint16_t mii_reg; |
402 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
403 | mii_reg |= MII_CR_POWER_DOWN; | |
404 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 405 | mdelay(1); |
1da177e4 LT |
406 | } |
407 | } | |
408 | ||
409 | void | |
410 | e1000_reset(struct e1000_adapter *adapter) | |
411 | { | |
2d7edb92 | 412 | uint32_t pba, manc; |
1da177e4 LT |
413 | |
414 | /* Repartition Pba for greater than 9k mtu | |
415 | * To take effect CTRL.RST is required. | |
416 | */ | |
417 | ||
2d7edb92 MC |
418 | switch (adapter->hw.mac_type) { |
419 | case e1000_82547: | |
0e6ef3e0 | 420 | case e1000_82547_rev_2: |
2d7edb92 MC |
421 | pba = E1000_PBA_30K; |
422 | break; | |
423 | case e1000_82573: | |
424 | pba = E1000_PBA_12K; | |
425 | break; | |
426 | default: | |
427 | pba = E1000_PBA_48K; | |
428 | break; | |
429 | } | |
430 | ||
431 | ||
432 | ||
433 | if(adapter->hw.mac_type == e1000_82547) { | |
1da177e4 LT |
434 | adapter->tx_fifo_head = 0; |
435 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
436 | adapter->tx_fifo_size = | |
437 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
438 | atomic_set(&adapter->tx_fifo_stall, 0); | |
439 | } | |
2d7edb92 | 440 | |
1da177e4 LT |
441 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
442 | ||
443 | /* flow control settings */ | |
444 | adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) - | |
445 | E1000_FC_HIGH_DIFF; | |
446 | adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - | |
447 | E1000_FC_LOW_DIFF; | |
448 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
449 | adapter->hw.fc_send_xon = 1; | |
450 | adapter->hw.fc = adapter->hw.original_fc; | |
451 | ||
2d7edb92 | 452 | /* Allow time for pending master requests to run */ |
1da177e4 LT |
453 | e1000_reset_hw(&adapter->hw); |
454 | if(adapter->hw.mac_type >= e1000_82544) | |
455 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
456 | if(e1000_init_hw(&adapter->hw)) | |
457 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
2d7edb92 | 458 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
459 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
460 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
461 | ||
462 | e1000_reset_adaptive(&adapter->hw); | |
463 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2d7edb92 MC |
464 | if (adapter->en_mng_pt) { |
465 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
466 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
467 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
468 | } | |
1da177e4 LT |
469 | } |
470 | ||
471 | /** | |
472 | * e1000_probe - Device Initialization Routine | |
473 | * @pdev: PCI device information struct | |
474 | * @ent: entry in e1000_pci_tbl | |
475 | * | |
476 | * Returns 0 on success, negative on failure | |
477 | * | |
478 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
479 | * The OS initialization, configuring of the adapter private structure, | |
480 | * and a hardware reset occur. | |
481 | **/ | |
482 | ||
483 | static int __devinit | |
484 | e1000_probe(struct pci_dev *pdev, | |
485 | const struct pci_device_id *ent) | |
486 | { | |
487 | struct net_device *netdev; | |
488 | struct e1000_adapter *adapter; | |
2d7edb92 MC |
489 | unsigned long mmio_start, mmio_len; |
490 | uint32_t swsm; | |
491 | ||
1da177e4 | 492 | static int cards_found = 0; |
2d7edb92 | 493 | int i, err, pci_using_dac; |
1da177e4 LT |
494 | uint16_t eeprom_data; |
495 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
1da177e4 LT |
496 | if((err = pci_enable_device(pdev))) |
497 | return err; | |
498 | ||
499 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { | |
500 | pci_using_dac = 1; | |
501 | } else { | |
502 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { | |
503 | E1000_ERR("No usable DMA configuration, aborting\n"); | |
504 | return err; | |
505 | } | |
506 | pci_using_dac = 0; | |
507 | } | |
508 | ||
509 | if((err = pci_request_regions(pdev, e1000_driver_name))) | |
510 | return err; | |
511 | ||
512 | pci_set_master(pdev); | |
513 | ||
514 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
515 | if(!netdev) { | |
516 | err = -ENOMEM; | |
517 | goto err_alloc_etherdev; | |
518 | } | |
519 | ||
520 | SET_MODULE_OWNER(netdev); | |
521 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
522 | ||
523 | pci_set_drvdata(pdev, netdev); | |
524 | adapter = netdev->priv; | |
525 | adapter->netdev = netdev; | |
526 | adapter->pdev = pdev; | |
527 | adapter->hw.back = adapter; | |
528 | adapter->msg_enable = (1 << debug) - 1; | |
529 | ||
530 | mmio_start = pci_resource_start(pdev, BAR_0); | |
531 | mmio_len = pci_resource_len(pdev, BAR_0); | |
532 | ||
533 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
534 | if(!adapter->hw.hw_addr) { | |
535 | err = -EIO; | |
536 | goto err_ioremap; | |
537 | } | |
538 | ||
539 | for(i = BAR_1; i <= BAR_5; i++) { | |
540 | if(pci_resource_len(pdev, i) == 0) | |
541 | continue; | |
542 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
543 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
544 | break; | |
545 | } | |
546 | } | |
547 | ||
548 | netdev->open = &e1000_open; | |
549 | netdev->stop = &e1000_close; | |
550 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
551 | netdev->get_stats = &e1000_get_stats; | |
552 | netdev->set_multicast_list = &e1000_set_multi; | |
553 | netdev->set_mac_address = &e1000_set_mac; | |
554 | netdev->change_mtu = &e1000_change_mtu; | |
555 | netdev->do_ioctl = &e1000_ioctl; | |
556 | e1000_set_ethtool_ops(netdev); | |
557 | netdev->tx_timeout = &e1000_tx_timeout; | |
558 | netdev->watchdog_timeo = 5 * HZ; | |
559 | #ifdef CONFIG_E1000_NAPI | |
560 | netdev->poll = &e1000_clean; | |
561 | netdev->weight = 64; | |
562 | #endif | |
563 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
564 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
565 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
566 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
567 | netdev->poll_controller = e1000_netpoll; | |
568 | #endif | |
569 | strcpy(netdev->name, pci_name(pdev)); | |
570 | ||
571 | netdev->mem_start = mmio_start; | |
572 | netdev->mem_end = mmio_start + mmio_len; | |
573 | netdev->base_addr = adapter->hw.io_base; | |
574 | ||
575 | adapter->bd_number = cards_found; | |
576 | ||
577 | /* setup the private structure */ | |
578 | ||
579 | if((err = e1000_sw_init(adapter))) | |
580 | goto err_sw_init; | |
581 | ||
2d7edb92 MC |
582 | if((err = e1000_check_phy_reset_block(&adapter->hw))) |
583 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); | |
584 | ||
1da177e4 LT |
585 | if(adapter->hw.mac_type >= e1000_82543) { |
586 | netdev->features = NETIF_F_SG | | |
587 | NETIF_F_HW_CSUM | | |
588 | NETIF_F_HW_VLAN_TX | | |
589 | NETIF_F_HW_VLAN_RX | | |
590 | NETIF_F_HW_VLAN_FILTER; | |
591 | } | |
592 | ||
593 | #ifdef NETIF_F_TSO | |
594 | if((adapter->hw.mac_type >= e1000_82544) && | |
595 | (adapter->hw.mac_type != e1000_82547)) | |
596 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
597 | |
598 | #ifdef NETIF_F_TSO_IPV6 | |
599 | if(adapter->hw.mac_type > e1000_82547_rev_2) | |
600 | netdev->features |= NETIF_F_TSO_IPV6; | |
601 | #endif | |
1da177e4 LT |
602 | #endif |
603 | if(pci_using_dac) | |
604 | netdev->features |= NETIF_F_HIGHDMA; | |
605 | ||
606 | /* hard_start_xmit is safe against parallel locking */ | |
607 | netdev->features |= NETIF_F_LLTX; | |
608 | ||
2d7edb92 MC |
609 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
610 | ||
1da177e4 LT |
611 | /* before reading the EEPROM, reset the controller to |
612 | * put the device in a known good starting state */ | |
613 | ||
614 | e1000_reset_hw(&adapter->hw); | |
615 | ||
616 | /* make sure the EEPROM is good */ | |
617 | ||
618 | if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) { | |
619 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); | |
620 | err = -EIO; | |
621 | goto err_eeprom; | |
622 | } | |
623 | ||
624 | /* copy the MAC address out of the EEPROM */ | |
625 | ||
626 | if (e1000_read_mac_addr(&adapter->hw)) | |
627 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); | |
628 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
629 | ||
630 | if(!is_valid_ether_addr(netdev->dev_addr)) { | |
631 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); | |
632 | err = -EIO; | |
633 | goto err_eeprom; | |
634 | } | |
635 | ||
636 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
637 | ||
638 | e1000_get_bus_info(&adapter->hw); | |
639 | ||
640 | init_timer(&adapter->tx_fifo_stall_timer); | |
641 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
642 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
643 | ||
644 | init_timer(&adapter->watchdog_timer); | |
645 | adapter->watchdog_timer.function = &e1000_watchdog; | |
646 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
647 | ||
648 | INIT_WORK(&adapter->watchdog_task, | |
649 | (void (*)(void *))e1000_watchdog_task, adapter); | |
650 | ||
651 | init_timer(&adapter->phy_info_timer); | |
652 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
653 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
654 | ||
655 | INIT_WORK(&adapter->tx_timeout_task, | |
656 | (void (*)(void *))e1000_tx_timeout_task, netdev); | |
657 | ||
658 | /* we're going to reset, so assume we have no link for now */ | |
659 | ||
660 | netif_carrier_off(netdev); | |
661 | netif_stop_queue(netdev); | |
662 | ||
663 | e1000_check_options(adapter); | |
664 | ||
665 | /* Initial Wake on LAN setting | |
666 | * If APM wake is enabled in the EEPROM, | |
667 | * enable the ACPI Magic Packet filter | |
668 | */ | |
669 | ||
670 | switch(adapter->hw.mac_type) { | |
671 | case e1000_82542_rev2_0: | |
672 | case e1000_82542_rev2_1: | |
673 | case e1000_82543: | |
674 | break; | |
675 | case e1000_82544: | |
676 | e1000_read_eeprom(&adapter->hw, | |
677 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
678 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
679 | break; | |
680 | case e1000_82546: | |
681 | case e1000_82546_rev_3: | |
682 | if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
683 | && (adapter->hw.media_type == e1000_media_type_copper)) { | |
684 | e1000_read_eeprom(&adapter->hw, | |
685 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
686 | break; | |
687 | } | |
688 | /* Fall Through */ | |
689 | default: | |
690 | e1000_read_eeprom(&adapter->hw, | |
691 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
692 | break; | |
693 | } | |
694 | if(eeprom_data & eeprom_apme_mask) | |
695 | adapter->wol |= E1000_WUFC_MAG; | |
696 | ||
697 | /* reset the hardware with the new settings */ | |
698 | e1000_reset(adapter); | |
699 | ||
2d7edb92 MC |
700 | /* Let firmware know the driver has taken over */ |
701 | switch(adapter->hw.mac_type) { | |
702 | case e1000_82573: | |
703 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
704 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
705 | swsm | E1000_SWSM_DRV_LOAD); | |
706 | break; | |
707 | default: | |
708 | break; | |
709 | } | |
710 | ||
1da177e4 LT |
711 | strcpy(netdev->name, "eth%d"); |
712 | if((err = register_netdev(netdev))) | |
713 | goto err_register; | |
714 | ||
715 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
716 | ||
717 | cards_found++; | |
718 | return 0; | |
719 | ||
720 | err_register: | |
721 | err_sw_init: | |
722 | err_eeprom: | |
723 | iounmap(adapter->hw.hw_addr); | |
724 | err_ioremap: | |
725 | free_netdev(netdev); | |
726 | err_alloc_etherdev: | |
727 | pci_release_regions(pdev); | |
728 | return err; | |
729 | } | |
730 | ||
731 | /** | |
732 | * e1000_remove - Device Removal Routine | |
733 | * @pdev: PCI device information struct | |
734 | * | |
735 | * e1000_remove is called by the PCI subsystem to alert the driver | |
736 | * that it should release a PCI device. The could be caused by a | |
737 | * Hot-Plug event, or because the driver is going to be removed from | |
738 | * memory. | |
739 | **/ | |
740 | ||
741 | static void __devexit | |
742 | e1000_remove(struct pci_dev *pdev) | |
743 | { | |
744 | struct net_device *netdev = pci_get_drvdata(pdev); | |
745 | struct e1000_adapter *adapter = netdev->priv; | |
2d7edb92 | 746 | uint32_t manc, swsm; |
1da177e4 LT |
747 | |
748 | flush_scheduled_work(); | |
749 | ||
750 | if(adapter->hw.mac_type >= e1000_82540 && | |
751 | adapter->hw.media_type == e1000_media_type_copper) { | |
752 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
753 | if(manc & E1000_MANC_SMBUS_EN) { | |
754 | manc |= E1000_MANC_ARP_EN; | |
755 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
756 | } | |
757 | } | |
758 | ||
2d7edb92 MC |
759 | switch(adapter->hw.mac_type) { |
760 | case e1000_82573: | |
761 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
762 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
763 | swsm & ~E1000_SWSM_DRV_LOAD); | |
764 | break; | |
765 | ||
766 | default: | |
767 | break; | |
768 | } | |
769 | ||
1da177e4 LT |
770 | unregister_netdev(netdev); |
771 | ||
2d7edb92 MC |
772 | if(!e1000_check_phy_reset_block(&adapter->hw)) |
773 | e1000_phy_hw_reset(&adapter->hw); | |
1da177e4 LT |
774 | |
775 | iounmap(adapter->hw.hw_addr); | |
776 | pci_release_regions(pdev); | |
777 | ||
778 | free_netdev(netdev); | |
779 | ||
780 | pci_disable_device(pdev); | |
781 | } | |
782 | ||
783 | /** | |
784 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
785 | * @adapter: board private structure to initialize | |
786 | * | |
787 | * e1000_sw_init initializes the Adapter private data structure. | |
788 | * Fields are initialized based on PCI device information and | |
789 | * OS network device settings (MTU size). | |
790 | **/ | |
791 | ||
792 | static int __devinit | |
793 | e1000_sw_init(struct e1000_adapter *adapter) | |
794 | { | |
795 | struct e1000_hw *hw = &adapter->hw; | |
796 | struct net_device *netdev = adapter->netdev; | |
797 | struct pci_dev *pdev = adapter->pdev; | |
798 | ||
799 | /* PCI config space info */ | |
800 | ||
801 | hw->vendor_id = pdev->vendor; | |
802 | hw->device_id = pdev->device; | |
803 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
804 | hw->subsystem_id = pdev->subsystem_device; | |
805 | ||
806 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
807 | ||
808 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
809 | ||
810 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2d7edb92 | 811 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_256; |
1da177e4 LT |
812 | hw->max_frame_size = netdev->mtu + |
813 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
814 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
815 | ||
816 | /* identify the MAC */ | |
817 | ||
818 | if(e1000_set_mac_type(hw)) { | |
819 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); | |
820 | return -EIO; | |
821 | } | |
822 | ||
823 | /* initialize eeprom parameters */ | |
824 | ||
2d7edb92 MC |
825 | if(e1000_init_eeprom_params(hw)) { |
826 | E1000_ERR("EEPROM initialization failed\n"); | |
827 | return -EIO; | |
828 | } | |
1da177e4 LT |
829 | |
830 | switch(hw->mac_type) { | |
831 | default: | |
832 | break; | |
833 | case e1000_82541: | |
834 | case e1000_82547: | |
835 | case e1000_82541_rev_2: | |
836 | case e1000_82547_rev_2: | |
837 | hw->phy_init_script = 1; | |
838 | break; | |
839 | } | |
840 | ||
841 | e1000_set_media_type(hw); | |
842 | ||
843 | hw->wait_autoneg_complete = FALSE; | |
844 | hw->tbi_compatibility_en = TRUE; | |
845 | hw->adaptive_ifs = TRUE; | |
846 | ||
847 | /* Copper options */ | |
848 | ||
849 | if(hw->media_type == e1000_media_type_copper) { | |
850 | hw->mdix = AUTO_ALL_MODES; | |
851 | hw->disable_polarity_correction = FALSE; | |
852 | hw->master_slave = E1000_MASTER_SLAVE; | |
853 | } | |
854 | ||
855 | atomic_set(&adapter->irq_sem, 1); | |
856 | spin_lock_init(&adapter->stats_lock); | |
857 | spin_lock_init(&adapter->tx_lock); | |
858 | ||
859 | return 0; | |
860 | } | |
861 | ||
862 | /** | |
863 | * e1000_open - Called when a network interface is made active | |
864 | * @netdev: network interface device structure | |
865 | * | |
866 | * Returns 0 on success, negative value on failure | |
867 | * | |
868 | * The open entry point is called when a network interface is made | |
869 | * active by the system (IFF_UP). At this point all resources needed | |
870 | * for transmit and receive operations are allocated, the interrupt | |
871 | * handler is registered with the OS, the watchdog timer is started, | |
872 | * and the stack is notified that the interface is ready. | |
873 | **/ | |
874 | ||
875 | static int | |
876 | e1000_open(struct net_device *netdev) | |
877 | { | |
878 | struct e1000_adapter *adapter = netdev->priv; | |
879 | int err; | |
880 | ||
881 | /* allocate transmit descriptors */ | |
882 | ||
883 | if((err = e1000_setup_tx_resources(adapter))) | |
884 | goto err_setup_tx; | |
885 | ||
886 | /* allocate receive descriptors */ | |
887 | ||
888 | if((err = e1000_setup_rx_resources(adapter))) | |
889 | goto err_setup_rx; | |
890 | ||
891 | if((err = e1000_up(adapter))) | |
892 | goto err_up; | |
2d7edb92 MC |
893 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
894 | if((adapter->hw.mng_cookie.status & | |
895 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
896 | e1000_update_mng_vlan(adapter); | |
897 | } | |
1da177e4 LT |
898 | |
899 | return E1000_SUCCESS; | |
900 | ||
901 | err_up: | |
902 | e1000_free_rx_resources(adapter); | |
903 | err_setup_rx: | |
904 | e1000_free_tx_resources(adapter); | |
905 | err_setup_tx: | |
906 | e1000_reset(adapter); | |
907 | ||
908 | return err; | |
909 | } | |
910 | ||
911 | /** | |
912 | * e1000_close - Disables a network interface | |
913 | * @netdev: network interface device structure | |
914 | * | |
915 | * Returns 0, this is not allowed to fail | |
916 | * | |
917 | * The close entry point is called when an interface is de-activated | |
918 | * by the OS. The hardware is still under the drivers control, but | |
919 | * needs to be disabled. A global MAC reset is issued to stop the | |
920 | * hardware, and all transmit and receive resources are freed. | |
921 | **/ | |
922 | ||
923 | static int | |
924 | e1000_close(struct net_device *netdev) | |
925 | { | |
926 | struct e1000_adapter *adapter = netdev->priv; | |
927 | ||
928 | e1000_down(adapter); | |
929 | ||
930 | e1000_free_tx_resources(adapter); | |
931 | e1000_free_rx_resources(adapter); | |
932 | ||
2d7edb92 MC |
933 | if((adapter->hw.mng_cookie.status & |
934 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
935 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
936 | } | |
1da177e4 LT |
937 | return 0; |
938 | } | |
939 | ||
940 | /** | |
941 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
942 | * @adapter: address of board private structure | |
2d7edb92 MC |
943 | * @start: address of beginning of memory |
944 | * @len: length of memory | |
1da177e4 LT |
945 | **/ |
946 | static inline boolean_t | |
947 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
948 | void *start, unsigned long len) | |
949 | { | |
950 | unsigned long begin = (unsigned long) start; | |
951 | unsigned long end = begin + len; | |
952 | ||
953 | /* first rev 82545 and 82546 need to not allow any memory | |
954 | * write location to cross a 64k boundary due to errata 23 */ | |
955 | if (adapter->hw.mac_type == e1000_82545 || | |
956 | adapter->hw.mac_type == e1000_82546 ) { | |
957 | ||
958 | /* check buffer doesn't cross 64kB */ | |
959 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; | |
960 | } | |
961 | ||
962 | return TRUE; | |
963 | } | |
964 | ||
965 | /** | |
966 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
967 | * @adapter: board private structure | |
968 | * | |
969 | * Return 0 on success, negative on failure | |
970 | **/ | |
971 | ||
972 | int | |
973 | e1000_setup_tx_resources(struct e1000_adapter *adapter) | |
974 | { | |
975 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
976 | struct pci_dev *pdev = adapter->pdev; | |
977 | int size; | |
978 | ||
979 | size = sizeof(struct e1000_buffer) * txdr->count; | |
980 | txdr->buffer_info = vmalloc(size); | |
981 | if(!txdr->buffer_info) { | |
982 | DPRINTK(PROBE, ERR, | |
983 | "Unable to Allocate Memory for the Transmit descriptor ring\n"); | |
984 | return -ENOMEM; | |
985 | } | |
986 | memset(txdr->buffer_info, 0, size); | |
987 | ||
988 | /* round up to nearest 4K */ | |
989 | ||
990 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
991 | E1000_ROUNDUP(txdr->size, 4096); | |
992 | ||
993 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
994 | if(!txdr->desc) { | |
995 | setup_tx_desc_die: | |
996 | DPRINTK(PROBE, ERR, | |
997 | "Unable to Allocate Memory for the Transmit descriptor ring\n"); | |
998 | vfree(txdr->buffer_info); | |
999 | return -ENOMEM; | |
1000 | } | |
1001 | ||
1002 | /* fix for errata 23, cant cross 64kB boundary */ | |
1003 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1004 | void *olddesc = txdr->desc; | |
1005 | dma_addr_t olddma = txdr->dma; | |
1006 | DPRINTK(TX_ERR,ERR,"txdr align check failed: %u bytes at %p\n", | |
1007 | txdr->size, txdr->desc); | |
1008 | /* try again, without freeing the previous */ | |
1009 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
1010 | /* failed allocation, critial failure */ | |
1011 | if(!txdr->desc) { | |
1012 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
1013 | goto setup_tx_desc_die; | |
1014 | } | |
1015 | ||
1016 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1017 | /* give up */ | |
1018 | pci_free_consistent(pdev, txdr->size, | |
1019 | txdr->desc, txdr->dma); | |
1020 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
1021 | DPRINTK(PROBE, ERR, | |
1022 | "Unable to Allocate aligned Memory for the Transmit" | |
1023 | " descriptor ring\n"); | |
1024 | vfree(txdr->buffer_info); | |
1025 | return -ENOMEM; | |
1026 | } else { | |
1027 | /* free old, move on with the new one since its okay */ | |
1028 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); | |
1029 | } | |
1030 | } | |
1031 | memset(txdr->desc, 0, txdr->size); | |
1032 | ||
1033 | txdr->next_to_use = 0; | |
1034 | txdr->next_to_clean = 0; | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | /** | |
1040 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1041 | * @adapter: board private structure | |
1042 | * | |
1043 | * Configure the Tx unit of the MAC after a reset. | |
1044 | **/ | |
1045 | ||
1046 | static void | |
1047 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1048 | { | |
1049 | uint64_t tdba = adapter->tx_ring.dma; | |
1050 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc); | |
1051 | uint32_t tctl, tipg; | |
1052 | ||
1053 | E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1054 | E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32)); | |
1055 | ||
1056 | E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen); | |
1057 | ||
1058 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1059 | ||
1060 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
1061 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
1062 | ||
1063 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1064 | ||
1065 | switch (adapter->hw.mac_type) { | |
1066 | case e1000_82542_rev2_0: | |
1067 | case e1000_82542_rev2_1: | |
1068 | tipg = DEFAULT_82542_TIPG_IPGT; | |
1069 | tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
1070 | tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
1071 | break; | |
1072 | default: | |
1073 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
1074 | adapter->hw.media_type == e1000_media_type_internal_serdes) | |
1075 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1076 | else | |
1077 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1078 | tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
1079 | tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
1080 | } | |
1081 | E1000_WRITE_REG(&adapter->hw, TIPG, tipg); | |
1082 | ||
1083 | /* Set the Tx Interrupt Delay register */ | |
1084 | ||
1085 | E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay); | |
1086 | if(adapter->hw.mac_type >= e1000_82540) | |
1087 | E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay); | |
1088 | ||
1089 | /* Program the Transmit Control Register */ | |
1090 | ||
1091 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1092 | ||
1093 | tctl &= ~E1000_TCTL_CT; | |
1094 | tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | | |
1095 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1096 | ||
1097 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1098 | ||
1099 | e1000_config_collision_dist(&adapter->hw); | |
1100 | ||
1101 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1102 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1103 | E1000_TXD_CMD_IFCS; | |
1104 | ||
1105 | if(adapter->hw.mac_type < e1000_82543) | |
1106 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; | |
1107 | else | |
1108 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1109 | ||
1110 | /* Cache if we're 82544 running in PCI-X because we'll | |
1111 | * need this to apply a workaround later in the send path. */ | |
1112 | if(adapter->hw.mac_type == e1000_82544 && | |
1113 | adapter->hw.bus_type == e1000_bus_type_pcix) | |
1114 | adapter->pcix_82544 = 1; | |
1115 | } | |
1116 | ||
1117 | /** | |
1118 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1119 | * @adapter: board private structure | |
1120 | * | |
1121 | * Returns 0 on success, negative on failure | |
1122 | **/ | |
1123 | ||
1124 | int | |
1125 | e1000_setup_rx_resources(struct e1000_adapter *adapter) | |
1126 | { | |
1127 | struct e1000_desc_ring *rxdr = &adapter->rx_ring; | |
1128 | struct pci_dev *pdev = adapter->pdev; | |
2d7edb92 | 1129 | int size, desc_len; |
1da177e4 LT |
1130 | |
1131 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
1132 | rxdr->buffer_info = vmalloc(size); | |
1133 | if(!rxdr->buffer_info) { | |
1134 | DPRINTK(PROBE, ERR, | |
1135 | "Unable to Allocate Memory for the Recieve descriptor ring\n"); | |
1136 | return -ENOMEM; | |
1137 | } | |
1138 | memset(rxdr->buffer_info, 0, size); | |
1139 | ||
2d7edb92 MC |
1140 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1141 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
1142 | if(!rxdr->ps_page) { | |
1143 | vfree(rxdr->buffer_info); | |
1144 | DPRINTK(PROBE, ERR, | |
1145 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1146 | return -ENOMEM; | |
1147 | } | |
1148 | memset(rxdr->ps_page, 0, size); | |
1149 | ||
1150 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1151 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
1152 | if(!rxdr->ps_page_dma) { | |
1153 | vfree(rxdr->buffer_info); | |
1154 | kfree(rxdr->ps_page); | |
1155 | DPRINTK(PROBE, ERR, | |
1156 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1157 | return -ENOMEM; | |
1158 | } | |
1159 | memset(rxdr->ps_page_dma, 0, size); | |
1160 | ||
1161 | if(adapter->hw.mac_type <= e1000_82547_rev_2) | |
1162 | desc_len = sizeof(struct e1000_rx_desc); | |
1163 | else | |
1164 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1165 | ||
1da177e4 LT |
1166 | /* Round up to nearest 4K */ |
1167 | ||
2d7edb92 | 1168 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1169 | E1000_ROUNDUP(rxdr->size, 4096); |
1170 | ||
1171 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1172 | ||
1173 | if(!rxdr->desc) { | |
1174 | setup_rx_desc_die: | |
1175 | DPRINTK(PROBE, ERR, | |
1176 | "Unble to Allocate Memory for the Recieve descriptor ring\n"); | |
1177 | vfree(rxdr->buffer_info); | |
2d7edb92 MC |
1178 | kfree(rxdr->ps_page); |
1179 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1180 | return -ENOMEM; |
1181 | } | |
1182 | ||
1183 | /* fix for errata 23, cant cross 64kB boundary */ | |
1184 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1185 | void *olddesc = rxdr->desc; | |
1186 | dma_addr_t olddma = rxdr->dma; | |
1187 | DPRINTK(RX_ERR,ERR, | |
1188 | "rxdr align check failed: %u bytes at %p\n", | |
1189 | rxdr->size, rxdr->desc); | |
1190 | /* try again, without freeing the previous */ | |
1191 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1192 | /* failed allocation, critial failure */ | |
1193 | if(!rxdr->desc) { | |
1194 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1195 | goto setup_rx_desc_die; | |
1196 | } | |
1197 | ||
1198 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1199 | /* give up */ | |
1200 | pci_free_consistent(pdev, rxdr->size, | |
1201 | rxdr->desc, rxdr->dma); | |
1202 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1203 | DPRINTK(PROBE, ERR, | |
1204 | "Unable to Allocate aligned Memory for the" | |
1205 | " Receive descriptor ring\n"); | |
1206 | vfree(rxdr->buffer_info); | |
2d7edb92 MC |
1207 | kfree(rxdr->ps_page); |
1208 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1209 | return -ENOMEM; |
1210 | } else { | |
1211 | /* free old, move on with the new one since its okay */ | |
1212 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); | |
1213 | } | |
1214 | } | |
1215 | memset(rxdr->desc, 0, rxdr->size); | |
1216 | ||
1217 | rxdr->next_to_clean = 0; | |
1218 | rxdr->next_to_use = 0; | |
1219 | ||
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | /** | |
1224 | * e1000_setup_rctl - configure the receive control register | |
1225 | * @adapter: Board private structure | |
1226 | **/ | |
1227 | ||
1228 | static void | |
1229 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1230 | { | |
2d7edb92 MC |
1231 | uint32_t rctl, rfctl; |
1232 | uint32_t psrctl = 0; | |
1da177e4 LT |
1233 | |
1234 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1235 | ||
1236 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1237 | ||
1238 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1239 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1240 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1241 | ||
1242 | if(adapter->hw.tbi_compatibility_on == 1) | |
1243 | rctl |= E1000_RCTL_SBP; | |
1244 | else | |
1245 | rctl &= ~E1000_RCTL_SBP; | |
1246 | ||
2d7edb92 MC |
1247 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1248 | rctl &= ~E1000_RCTL_LPE; | |
1249 | else | |
1250 | rctl |= E1000_RCTL_LPE; | |
1251 | ||
1da177e4 | 1252 | /* Setup buffer sizes */ |
2d7edb92 MC |
1253 | if(adapter->hw.mac_type == e1000_82573) { |
1254 | /* We can now specify buffers in 1K increments. | |
1255 | * BSIZE and BSEX are ignored in this case. */ | |
1256 | rctl |= adapter->rx_buffer_len << 0x11; | |
1257 | } else { | |
1258 | rctl &= ~E1000_RCTL_SZ_4096; | |
1259 | rctl |= E1000_RCTL_BSEX; | |
1260 | switch (adapter->rx_buffer_len) { | |
1261 | case E1000_RXBUFFER_2048: | |
1262 | default: | |
1263 | rctl |= E1000_RCTL_SZ_2048; | |
1264 | rctl &= ~E1000_RCTL_BSEX; | |
1265 | break; | |
1266 | case E1000_RXBUFFER_4096: | |
1267 | rctl |= E1000_RCTL_SZ_4096; | |
1268 | break; | |
1269 | case E1000_RXBUFFER_8192: | |
1270 | rctl |= E1000_RCTL_SZ_8192; | |
1271 | break; | |
1272 | case E1000_RXBUFFER_16384: | |
1273 | rctl |= E1000_RCTL_SZ_16384; | |
1274 | break; | |
1275 | } | |
1276 | } | |
1277 | ||
1278 | #ifdef CONFIG_E1000_PACKET_SPLIT | |
1279 | /* 82571 and greater support packet-split where the protocol | |
1280 | * header is placed in skb->data and the packet data is | |
1281 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1282 | * In the case of a non-split, skb->data is linearly filled, | |
1283 | * followed by the page buffers. Therefore, skb->data is | |
1284 | * sized to hold the largest protocol header. | |
1285 | */ | |
1286 | adapter->rx_ps = (adapter->hw.mac_type > e1000_82547_rev_2) | |
1287 | && (adapter->netdev->mtu | |
1288 | < ((3 * PAGE_SIZE) + adapter->rx_ps_bsize0)); | |
1289 | #endif | |
1290 | if(adapter->rx_ps) { | |
1291 | /* Configure extra packet-split registers */ | |
1292 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1293 | rfctl |= E1000_RFCTL_EXTEN; | |
1294 | /* disable IPv6 packet split support */ | |
1295 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1296 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1297 | ||
1298 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
1299 | ||
1300 | psrctl |= adapter->rx_ps_bsize0 >> | |
1301 | E1000_PSRCTL_BSIZE0_SHIFT; | |
1302 | psrctl |= PAGE_SIZE >> | |
1303 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1304 | psrctl |= PAGE_SIZE << | |
1305 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1306 | psrctl |= PAGE_SIZE << | |
1307 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1308 | ||
1309 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1310 | } |
1311 | ||
1312 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1313 | } | |
1314 | ||
1315 | /** | |
1316 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1317 | * @adapter: board private structure | |
1318 | * | |
1319 | * Configure the Rx unit of the MAC after a reset. | |
1320 | **/ | |
1321 | ||
1322 | static void | |
1323 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1324 | { | |
1325 | uint64_t rdba = adapter->rx_ring.dma; | |
2d7edb92 MC |
1326 | uint32_t rdlen, rctl, rxcsum; |
1327 | ||
1328 | if(adapter->rx_ps) { | |
1329 | rdlen = adapter->rx_ring.count * | |
1330 | sizeof(union e1000_rx_desc_packet_split); | |
1331 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1332 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1333 | } else { | |
1334 | rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc); | |
1335 | adapter->clean_rx = e1000_clean_rx_irq; | |
1336 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1337 | } | |
1da177e4 LT |
1338 | |
1339 | /* disable receives while setting up the descriptors */ | |
1340 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1341 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1342 | ||
1343 | /* set the Receive Delay Timer Register */ | |
1344 | E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay); | |
1345 | ||
1346 | if(adapter->hw.mac_type >= e1000_82540) { | |
1347 | E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay); | |
1348 | if(adapter->itr > 1) | |
1349 | E1000_WRITE_REG(&adapter->hw, ITR, | |
1350 | 1000000000 / (adapter->itr * 256)); | |
1351 | } | |
1352 | ||
1353 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
1354 | E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1355 | E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32)); | |
1356 | ||
1357 | E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen); | |
1358 | ||
1359 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
1360 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1361 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1362 | ||
1363 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ | |
2d7edb92 | 1364 | if(adapter->hw.mac_type >= e1000_82543) { |
1da177e4 | 1365 | rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM); |
2d7edb92 MC |
1366 | if(adapter->rx_csum == TRUE) { |
1367 | rxcsum |= E1000_RXCSUM_TUOFL; | |
1368 | ||
1369 | /* Enable 82573 IPv4 payload checksum for UDP fragments | |
1370 | * Must be used in conjunction with packet-split. */ | |
1371 | if((adapter->hw.mac_type > e1000_82547_rev_2) && | |
1372 | (adapter->rx_ps)) { | |
1373 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
1374 | } | |
1375 | } else { | |
1376 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1377 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1378 | } | |
1da177e4 LT |
1379 | E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum); |
1380 | } | |
1381 | ||
2d7edb92 MC |
1382 | if (adapter->hw.mac_type == e1000_82573) |
1383 | E1000_WRITE_REG(&adapter->hw, ERT, 0x0100); | |
1384 | ||
1da177e4 LT |
1385 | /* Enable Receives */ |
1386 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1387 | } | |
1388 | ||
1389 | /** | |
1390 | * e1000_free_tx_resources - Free Tx Resources | |
1391 | * @adapter: board private structure | |
1392 | * | |
1393 | * Free all transmit software resources | |
1394 | **/ | |
1395 | ||
1396 | void | |
1397 | e1000_free_tx_resources(struct e1000_adapter *adapter) | |
1398 | { | |
1399 | struct pci_dev *pdev = adapter->pdev; | |
1400 | ||
1401 | e1000_clean_tx_ring(adapter); | |
1402 | ||
1403 | vfree(adapter->tx_ring.buffer_info); | |
1404 | adapter->tx_ring.buffer_info = NULL; | |
1405 | ||
1406 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
1407 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
1408 | ||
1409 | adapter->tx_ring.desc = NULL; | |
1410 | } | |
1411 | ||
1412 | static inline void | |
1413 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1414 | struct e1000_buffer *buffer_info) | |
1415 | { | |
1416 | struct pci_dev *pdev = adapter->pdev; | |
1417 | ||
1418 | if(buffer_info->dma) { | |
1419 | pci_unmap_page(pdev, | |
1420 | buffer_info->dma, | |
1421 | buffer_info->length, | |
1422 | PCI_DMA_TODEVICE); | |
1423 | buffer_info->dma = 0; | |
1424 | } | |
1425 | if(buffer_info->skb) { | |
1426 | dev_kfree_skb_any(buffer_info->skb); | |
1427 | buffer_info->skb = NULL; | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | /** | |
1432 | * e1000_clean_tx_ring - Free Tx Buffers | |
1433 | * @adapter: board private structure | |
1434 | **/ | |
1435 | ||
1436 | static void | |
1437 | e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1438 | { | |
1439 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1440 | struct e1000_buffer *buffer_info; | |
1441 | unsigned long size; | |
1442 | unsigned int i; | |
1443 | ||
1444 | /* Free all the Tx ring sk_buffs */ | |
1445 | ||
1446 | if (likely(adapter->previous_buffer_info.skb != NULL)) { | |
1447 | e1000_unmap_and_free_tx_resource(adapter, | |
1448 | &adapter->previous_buffer_info); | |
1449 | } | |
1450 | ||
1451 | for(i = 0; i < tx_ring->count; i++) { | |
1452 | buffer_info = &tx_ring->buffer_info[i]; | |
1453 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1454 | } | |
1455 | ||
1456 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1457 | memset(tx_ring->buffer_info, 0, size); | |
1458 | ||
1459 | /* Zero out the descriptor ring */ | |
1460 | ||
1461 | memset(tx_ring->desc, 0, tx_ring->size); | |
1462 | ||
1463 | tx_ring->next_to_use = 0; | |
1464 | tx_ring->next_to_clean = 0; | |
1465 | ||
1466 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
1467 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
1468 | } | |
1469 | ||
1470 | /** | |
1471 | * e1000_free_rx_resources - Free Rx Resources | |
1472 | * @adapter: board private structure | |
1473 | * | |
1474 | * Free all receive software resources | |
1475 | **/ | |
1476 | ||
1477 | void | |
1478 | e1000_free_rx_resources(struct e1000_adapter *adapter) | |
1479 | { | |
1480 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1481 | struct pci_dev *pdev = adapter->pdev; | |
1482 | ||
1483 | e1000_clean_rx_ring(adapter); | |
1484 | ||
1485 | vfree(rx_ring->buffer_info); | |
1486 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
1487 | kfree(rx_ring->ps_page); |
1488 | rx_ring->ps_page = NULL; | |
1489 | kfree(rx_ring->ps_page_dma); | |
1490 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
1491 | |
1492 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1493 | ||
1494 | rx_ring->desc = NULL; | |
1495 | } | |
1496 | ||
1497 | /** | |
1498 | * e1000_clean_rx_ring - Free Rx Buffers | |
1499 | * @adapter: board private structure | |
1500 | **/ | |
1501 | ||
1502 | static void | |
1503 | e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1504 | { | |
1505 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1506 | struct e1000_buffer *buffer_info; | |
2d7edb92 MC |
1507 | struct e1000_ps_page *ps_page; |
1508 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
1509 | struct pci_dev *pdev = adapter->pdev; |
1510 | unsigned long size; | |
2d7edb92 | 1511 | unsigned int i, j; |
1da177e4 LT |
1512 | |
1513 | /* Free all the Rx ring sk_buffs */ | |
1514 | ||
1515 | for(i = 0; i < rx_ring->count; i++) { | |
1516 | buffer_info = &rx_ring->buffer_info[i]; | |
1517 | if(buffer_info->skb) { | |
2d7edb92 MC |
1518 | ps_page = &rx_ring->ps_page[i]; |
1519 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
1da177e4 LT |
1520 | pci_unmap_single(pdev, |
1521 | buffer_info->dma, | |
1522 | buffer_info->length, | |
1523 | PCI_DMA_FROMDEVICE); | |
1524 | ||
1525 | dev_kfree_skb(buffer_info->skb); | |
1526 | buffer_info->skb = NULL; | |
2d7edb92 MC |
1527 | |
1528 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1529 | if(!ps_page->ps_page[j]) break; | |
1530 | pci_unmap_single(pdev, | |
1531 | ps_page_dma->ps_page_dma[j], | |
1532 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
1533 | ps_page_dma->ps_page_dma[j] = 0; | |
1534 | put_page(ps_page->ps_page[j]); | |
1535 | ps_page->ps_page[j] = NULL; | |
1536 | } | |
1da177e4 LT |
1537 | } |
1538 | } | |
1539 | ||
1540 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1541 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
1542 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
1543 | memset(rx_ring->ps_page, 0, size); | |
1544 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
1545 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
1546 | |
1547 | /* Zero out the descriptor ring */ | |
1548 | ||
1549 | memset(rx_ring->desc, 0, rx_ring->size); | |
1550 | ||
1551 | rx_ring->next_to_clean = 0; | |
1552 | rx_ring->next_to_use = 0; | |
1553 | ||
1554 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1555 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1556 | } | |
1557 | ||
1558 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
1559 | * and memory write and invalidate disabled for certain operations | |
1560 | */ | |
1561 | static void | |
1562 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
1563 | { | |
1564 | struct net_device *netdev = adapter->netdev; | |
1565 | uint32_t rctl; | |
1566 | ||
1567 | e1000_pci_clear_mwi(&adapter->hw); | |
1568 | ||
1569 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1570 | rctl |= E1000_RCTL_RST; | |
1571 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1572 | E1000_WRITE_FLUSH(&adapter->hw); | |
1573 | mdelay(5); | |
1574 | ||
1575 | if(netif_running(netdev)) | |
1576 | e1000_clean_rx_ring(adapter); | |
1577 | } | |
1578 | ||
1579 | static void | |
1580 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
1581 | { | |
1582 | struct net_device *netdev = adapter->netdev; | |
1583 | uint32_t rctl; | |
1584 | ||
1585 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1586 | rctl &= ~E1000_RCTL_RST; | |
1587 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1588 | E1000_WRITE_FLUSH(&adapter->hw); | |
1589 | mdelay(5); | |
1590 | ||
1591 | if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
1592 | e1000_pci_set_mwi(&adapter->hw); | |
1593 | ||
1594 | if(netif_running(netdev)) { | |
1595 | e1000_configure_rx(adapter); | |
1596 | e1000_alloc_rx_buffers(adapter); | |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /** | |
1601 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
1602 | * @netdev: network interface device structure | |
1603 | * @p: pointer to an address structure | |
1604 | * | |
1605 | * Returns 0 on success, negative on failure | |
1606 | **/ | |
1607 | ||
1608 | static int | |
1609 | e1000_set_mac(struct net_device *netdev, void *p) | |
1610 | { | |
1611 | struct e1000_adapter *adapter = netdev->priv; | |
1612 | struct sockaddr *addr = p; | |
1613 | ||
1614 | if(!is_valid_ether_addr(addr->sa_data)) | |
1615 | return -EADDRNOTAVAIL; | |
1616 | ||
1617 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1618 | ||
1619 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1620 | e1000_enter_82542_rst(adapter); | |
1621 | ||
1622 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1623 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
1624 | ||
1625 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
1626 | ||
1627 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1628 | e1000_leave_82542_rst(adapter); | |
1629 | ||
1630 | return 0; | |
1631 | } | |
1632 | ||
1633 | /** | |
1634 | * e1000_set_multi - Multicast and Promiscuous mode set | |
1635 | * @netdev: network interface device structure | |
1636 | * | |
1637 | * The set_multi entry point is called whenever the multicast address | |
1638 | * list or the network interface flags are updated. This routine is | |
1639 | * responsible for configuring the hardware for proper multicast, | |
1640 | * promiscuous mode, and all-multi behavior. | |
1641 | **/ | |
1642 | ||
1643 | static void | |
1644 | e1000_set_multi(struct net_device *netdev) | |
1645 | { | |
1646 | struct e1000_adapter *adapter = netdev->priv; | |
1647 | struct e1000_hw *hw = &adapter->hw; | |
1648 | struct dev_mc_list *mc_ptr; | |
1649 | uint32_t rctl; | |
1650 | uint32_t hash_value; | |
1651 | int i; | |
1652 | unsigned long flags; | |
1653 | ||
1654 | /* Check for Promiscuous and All Multicast modes */ | |
1655 | ||
1656 | spin_lock_irqsave(&adapter->tx_lock, flags); | |
1657 | ||
1658 | rctl = E1000_READ_REG(hw, RCTL); | |
1659 | ||
1660 | if(netdev->flags & IFF_PROMISC) { | |
1661 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1662 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1663 | rctl |= E1000_RCTL_MPE; | |
1664 | rctl &= ~E1000_RCTL_UPE; | |
1665 | } else { | |
1666 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1667 | } | |
1668 | ||
1669 | E1000_WRITE_REG(hw, RCTL, rctl); | |
1670 | ||
1671 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1672 | ||
1673 | if(hw->mac_type == e1000_82542_rev2_0) | |
1674 | e1000_enter_82542_rst(adapter); | |
1675 | ||
1676 | /* load the first 14 multicast address into the exact filters 1-14 | |
1677 | * RAR 0 is used for the station MAC adddress | |
1678 | * if there are not 14 addresses, go ahead and clear the filters | |
1679 | */ | |
1680 | mc_ptr = netdev->mc_list; | |
1681 | ||
1682 | for(i = 1; i < E1000_RAR_ENTRIES; i++) { | |
1683 | if(mc_ptr) { | |
1684 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); | |
1685 | mc_ptr = mc_ptr->next; | |
1686 | } else { | |
1687 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
1688 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | /* clear the old settings from the multicast hash table */ | |
1693 | ||
1694 | for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++) | |
1695 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
1696 | ||
1697 | /* load any remaining addresses into the hash table */ | |
1698 | ||
1699 | for(; mc_ptr; mc_ptr = mc_ptr->next) { | |
1700 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
1701 | e1000_mta_set(hw, hash_value); | |
1702 | } | |
1703 | ||
1704 | if(hw->mac_type == e1000_82542_rev2_0) | |
1705 | e1000_leave_82542_rst(adapter); | |
1706 | ||
1707 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1708 | } | |
1709 | ||
1710 | /* Need to wait a few seconds after link up to get diagnostic information from | |
1711 | * the phy */ | |
1712 | ||
1713 | static void | |
1714 | e1000_update_phy_info(unsigned long data) | |
1715 | { | |
1716 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1717 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
1718 | } | |
1719 | ||
1720 | /** | |
1721 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
1722 | * @data: pointer to adapter cast into an unsigned long | |
1723 | **/ | |
1724 | ||
1725 | static void | |
1726 | e1000_82547_tx_fifo_stall(unsigned long data) | |
1727 | { | |
1728 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1729 | struct net_device *netdev = adapter->netdev; | |
1730 | uint32_t tctl; | |
1731 | ||
1732 | if(atomic_read(&adapter->tx_fifo_stall)) { | |
1733 | if((E1000_READ_REG(&adapter->hw, TDT) == | |
1734 | E1000_READ_REG(&adapter->hw, TDH)) && | |
1735 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
1736 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
1737 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
1738 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
1739 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1740 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
1741 | tctl & ~E1000_TCTL_EN); | |
1742 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
1743 | adapter->tx_head_addr); | |
1744 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
1745 | adapter->tx_head_addr); | |
1746 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
1747 | adapter->tx_head_addr); | |
1748 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
1749 | adapter->tx_head_addr); | |
1750 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1751 | E1000_WRITE_FLUSH(&adapter->hw); | |
1752 | ||
1753 | adapter->tx_fifo_head = 0; | |
1754 | atomic_set(&adapter->tx_fifo_stall, 0); | |
1755 | netif_wake_queue(netdev); | |
1756 | } else { | |
1757 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
1758 | } | |
1759 | } | |
1760 | } | |
1761 | ||
1762 | /** | |
1763 | * e1000_watchdog - Timer Call-back | |
1764 | * @data: pointer to adapter cast into an unsigned long | |
1765 | **/ | |
1766 | static void | |
1767 | e1000_watchdog(unsigned long data) | |
1768 | { | |
1769 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1770 | ||
1771 | /* Do the rest outside of interrupt context */ | |
1772 | schedule_work(&adapter->watchdog_task); | |
1773 | } | |
1774 | ||
1775 | static void | |
1776 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
1777 | { | |
1778 | struct net_device *netdev = adapter->netdev; | |
1779 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
1780 | uint32_t link; | |
1781 | ||
1782 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
1783 | if (adapter->hw.mac_type == e1000_82573) { |
1784 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
1785 | if(adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) | |
1786 | e1000_update_mng_vlan(adapter); | |
1787 | } | |
1da177e4 LT |
1788 | |
1789 | if((adapter->hw.media_type == e1000_media_type_internal_serdes) && | |
1790 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) | |
1791 | link = !adapter->hw.serdes_link_down; | |
1792 | else | |
1793 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
1794 | ||
1795 | if(link) { | |
1796 | if(!netif_carrier_ok(netdev)) { | |
1797 | e1000_get_speed_and_duplex(&adapter->hw, | |
1798 | &adapter->link_speed, | |
1799 | &adapter->link_duplex); | |
1800 | ||
1801 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
1802 | adapter->link_speed, | |
1803 | adapter->link_duplex == FULL_DUPLEX ? | |
1804 | "Full Duplex" : "Half Duplex"); | |
1805 | ||
1806 | netif_carrier_on(netdev); | |
1807 | netif_wake_queue(netdev); | |
1808 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1809 | adapter->smartspeed = 0; | |
1810 | } | |
1811 | } else { | |
1812 | if(netif_carrier_ok(netdev)) { | |
1813 | adapter->link_speed = 0; | |
1814 | adapter->link_duplex = 0; | |
1815 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
1816 | netif_carrier_off(netdev); | |
1817 | netif_stop_queue(netdev); | |
1818 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1819 | } | |
1820 | ||
1821 | e1000_smartspeed(adapter); | |
1822 | } | |
1823 | ||
1824 | e1000_update_stats(adapter); | |
1825 | ||
1826 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
1827 | adapter->tpt_old = adapter->stats.tpt; | |
1828 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
1829 | adapter->colc_old = adapter->stats.colc; | |
1830 | ||
1831 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
1832 | adapter->gorcl_old = adapter->stats.gorcl; | |
1833 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
1834 | adapter->gotcl_old = adapter->stats.gotcl; | |
1835 | ||
1836 | e1000_update_adaptive(&adapter->hw); | |
1837 | ||
1838 | if(!netif_carrier_ok(netdev)) { | |
1839 | if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1840 | /* We've lost link, so the controller stops DMA, | |
1841 | * but we've got queued Tx work that's never going | |
1842 | * to get done, so reset controller to flush Tx. | |
1843 | * (Do the reset outside of interrupt context). */ | |
1844 | schedule_work(&adapter->tx_timeout_task); | |
1845 | } | |
1846 | } | |
1847 | ||
1848 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
1849 | if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { | |
1850 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total | |
1851 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
1852 | * else is between 2000-8000. */ | |
1853 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
1854 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? | |
1855 | adapter->gotcl - adapter->gorcl : | |
1856 | adapter->gorcl - adapter->gotcl) / 10000; | |
1857 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
1858 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
1859 | } | |
1860 | ||
1861 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
1862 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
1863 | ||
1864 | /* Force detection of hung controller every watchdog period*/ | |
1865 | adapter->detect_tx_hung = TRUE; | |
1866 | ||
1867 | /* Reset the timer */ | |
1868 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1869 | } | |
1870 | ||
1871 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
1872 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
1873 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 1874 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
1875 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
1876 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
1877 | ||
1878 | static inline int | |
1879 | e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1880 | { | |
1881 | #ifdef NETIF_F_TSO | |
1882 | struct e1000_context_desc *context_desc; | |
1883 | unsigned int i; | |
1884 | uint32_t cmd_length = 0; | |
2d7edb92 | 1885 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
1886 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
1887 | int err; | |
1888 | ||
1889 | if(skb_shinfo(skb)->tso_size) { | |
1890 | if (skb_header_cloned(skb)) { | |
1891 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1892 | if (err) | |
1893 | return err; | |
1894 | } | |
1895 | ||
1896 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
1897 | mss = skb_shinfo(skb)->tso_size; | |
2d7edb92 MC |
1898 | if(skb->protocol == ntohs(ETH_P_IP)) { |
1899 | skb->nh.iph->tot_len = 0; | |
1900 | skb->nh.iph->check = 0; | |
1901 | skb->h.th->check = | |
1902 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1903 | skb->nh.iph->daddr, | |
1904 | 0, | |
1905 | IPPROTO_TCP, | |
1906 | 0); | |
1907 | cmd_length = E1000_TXD_CMD_IP; | |
1908 | ipcse = skb->h.raw - skb->data - 1; | |
1909 | #ifdef NETIF_F_TSO_IPV6 | |
1910 | } else if(skb->protocol == ntohs(ETH_P_IPV6)) { | |
1911 | skb->nh.ipv6h->payload_len = 0; | |
1912 | skb->h.th->check = | |
1913 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
1914 | &skb->nh.ipv6h->daddr, | |
1915 | 0, | |
1916 | IPPROTO_TCP, | |
1917 | 0); | |
1918 | ipcse = 0; | |
1919 | #endif | |
1920 | } | |
1da177e4 LT |
1921 | ipcss = skb->nh.raw - skb->data; |
1922 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
1923 | tucss = skb->h.raw - skb->data; |
1924 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1925 | tucse = 0; | |
1926 | ||
1927 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 1928 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 LT |
1929 | |
1930 | i = adapter->tx_ring.next_to_use; | |
1931 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1932 | ||
1933 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
1934 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
1935 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
1936 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
1937 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
1938 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
1939 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
1940 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
1941 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
1942 | ||
1943 | if(++i == adapter->tx_ring.count) i = 0; | |
1944 | adapter->tx_ring.next_to_use = i; | |
1945 | ||
1946 | return 1; | |
1947 | } | |
1948 | #endif | |
1949 | ||
1950 | return 0; | |
1951 | } | |
1952 | ||
1953 | static inline boolean_t | |
1954 | e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1955 | { | |
1956 | struct e1000_context_desc *context_desc; | |
1957 | unsigned int i; | |
1958 | uint8_t css; | |
1959 | ||
1960 | if(likely(skb->ip_summed == CHECKSUM_HW)) { | |
1961 | css = skb->h.raw - skb->data; | |
1962 | ||
1963 | i = adapter->tx_ring.next_to_use; | |
1964 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1965 | ||
1966 | context_desc->upper_setup.tcp_fields.tucss = css; | |
1967 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
1968 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
1969 | context_desc->tcp_seg_setup.data = 0; | |
1970 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
1971 | ||
1972 | if(unlikely(++i == adapter->tx_ring.count)) i = 0; | |
1973 | adapter->tx_ring.next_to_use = i; | |
1974 | ||
1975 | return TRUE; | |
1976 | } | |
1977 | ||
1978 | return FALSE; | |
1979 | } | |
1980 | ||
1981 | #define E1000_MAX_TXD_PWR 12 | |
1982 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
1983 | ||
1984 | static inline int | |
1985 | e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb, | |
1986 | unsigned int first, unsigned int max_per_txd, | |
1987 | unsigned int nr_frags, unsigned int mss) | |
1988 | { | |
1989 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1990 | struct e1000_buffer *buffer_info; | |
1991 | unsigned int len = skb->len; | |
1992 | unsigned int offset = 0, size, count = 0, i; | |
1993 | unsigned int f; | |
1994 | len -= skb->data_len; | |
1995 | ||
1996 | i = tx_ring->next_to_use; | |
1997 | ||
1998 | while(len) { | |
1999 | buffer_info = &tx_ring->buffer_info[i]; | |
2000 | size = min(len, max_per_txd); | |
2001 | #ifdef NETIF_F_TSO | |
2002 | /* Workaround for premature desc write-backs | |
2003 | * in TSO mode. Append 4-byte sentinel desc */ | |
2004 | if(unlikely(mss && !nr_frags && size == len && size > 8)) | |
2005 | size -= 4; | |
2006 | #endif | |
97338bde MC |
2007 | /* work-around for errata 10 and it applies |
2008 | * to all controllers in PCI-X mode | |
2009 | * The fix is to make sure that the first descriptor of a | |
2010 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2011 | */ | |
2012 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
2013 | (size > 2015) && count == 0)) | |
2014 | size = 2015; | |
2015 | ||
1da177e4 LT |
2016 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2017 | * terminating buffers within evenly-aligned dwords. */ | |
2018 | if(unlikely(adapter->pcix_82544 && | |
2019 | !((unsigned long)(skb->data + offset + size - 1) & 4) && | |
2020 | size > 4)) | |
2021 | size -= 4; | |
2022 | ||
2023 | buffer_info->length = size; | |
2024 | buffer_info->dma = | |
2025 | pci_map_single(adapter->pdev, | |
2026 | skb->data + offset, | |
2027 | size, | |
2028 | PCI_DMA_TODEVICE); | |
2029 | buffer_info->time_stamp = jiffies; | |
2030 | ||
2031 | len -= size; | |
2032 | offset += size; | |
2033 | count++; | |
2034 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2035 | } | |
2036 | ||
2037 | for(f = 0; f < nr_frags; f++) { | |
2038 | struct skb_frag_struct *frag; | |
2039 | ||
2040 | frag = &skb_shinfo(skb)->frags[f]; | |
2041 | len = frag->size; | |
2042 | offset = frag->page_offset; | |
2043 | ||
2044 | while(len) { | |
2045 | buffer_info = &tx_ring->buffer_info[i]; | |
2046 | size = min(len, max_per_txd); | |
2047 | #ifdef NETIF_F_TSO | |
2048 | /* Workaround for premature desc write-backs | |
2049 | * in TSO mode. Append 4-byte sentinel desc */ | |
2050 | if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) | |
2051 | size -= 4; | |
2052 | #endif | |
2053 | /* Workaround for potential 82544 hang in PCI-X. | |
2054 | * Avoid terminating buffers within evenly-aligned | |
2055 | * dwords. */ | |
2056 | if(unlikely(adapter->pcix_82544 && | |
2057 | !((unsigned long)(frag->page+offset+size-1) & 4) && | |
2058 | size > 4)) | |
2059 | size -= 4; | |
2060 | ||
2061 | buffer_info->length = size; | |
2062 | buffer_info->dma = | |
2063 | pci_map_page(adapter->pdev, | |
2064 | frag->page, | |
2065 | offset, | |
2066 | size, | |
2067 | PCI_DMA_TODEVICE); | |
2068 | buffer_info->time_stamp = jiffies; | |
2069 | ||
2070 | len -= size; | |
2071 | offset += size; | |
2072 | count++; | |
2073 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2078 | tx_ring->buffer_info[i].skb = skb; | |
2079 | tx_ring->buffer_info[first].next_to_watch = i; | |
2080 | ||
2081 | return count; | |
2082 | } | |
2083 | ||
2084 | static inline void | |
2085 | e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags) | |
2086 | { | |
2087 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
2088 | struct e1000_tx_desc *tx_desc = NULL; | |
2089 | struct e1000_buffer *buffer_info; | |
2090 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2091 | unsigned int i; | |
2092 | ||
2093 | if(likely(tx_flags & E1000_TX_FLAGS_TSO)) { | |
2094 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
2095 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2096 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2097 | ||
2098 | if(likely(tx_flags & E1000_TX_FLAGS_IPV4)) | |
2099 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) { | |
2103 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
2104 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2105 | } | |
2106 | ||
2107 | if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { | |
2108 | txd_lower |= E1000_TXD_CMD_VLE; | |
2109 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2110 | } | |
2111 | ||
2112 | i = tx_ring->next_to_use; | |
2113 | ||
2114 | while(count--) { | |
2115 | buffer_info = &tx_ring->buffer_info[i]; | |
2116 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2117 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2118 | tx_desc->lower.data = | |
2119 | cpu_to_le32(txd_lower | buffer_info->length); | |
2120 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
2121 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2122 | } | |
2123 | ||
2124 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2125 | ||
2126 | /* Force memory writes to complete before letting h/w | |
2127 | * know there are new descriptors to fetch. (Only | |
2128 | * applicable for weak-ordered memory model archs, | |
2129 | * such as IA-64). */ | |
2130 | wmb(); | |
2131 | ||
2132 | tx_ring->next_to_use = i; | |
2133 | E1000_WRITE_REG(&adapter->hw, TDT, i); | |
2134 | } | |
2135 | ||
2136 | /** | |
2137 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2138 | * The workaround is to avoid queuing a large packet that would span | |
2139 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2140 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2141 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2142 | * to the beginning of the Tx FIFO. | |
2143 | **/ | |
2144 | ||
2145 | #define E1000_FIFO_HDR 0x10 | |
2146 | #define E1000_82547_PAD_LEN 0x3E0 | |
2147 | ||
2148 | static inline int | |
2149 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2150 | { | |
2151 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2152 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2153 | ||
2154 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2155 | ||
2156 | if(adapter->link_duplex != HALF_DUPLEX) | |
2157 | goto no_fifo_stall_required; | |
2158 | ||
2159 | if(atomic_read(&adapter->tx_fifo_stall)) | |
2160 | return 1; | |
2161 | ||
2162 | if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { | |
2163 | atomic_set(&adapter->tx_fifo_stall, 1); | |
2164 | return 1; | |
2165 | } | |
2166 | ||
2167 | no_fifo_stall_required: | |
2168 | adapter->tx_fifo_head += skb_fifo_len; | |
2169 | if(adapter->tx_fifo_head >= adapter->tx_fifo_size) | |
2170 | adapter->tx_fifo_head -= adapter->tx_fifo_size; | |
2171 | return 0; | |
2172 | } | |
2173 | ||
2d7edb92 MC |
2174 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
2175 | static inline int | |
2176 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2177 | { | |
2178 | struct e1000_hw *hw = &adapter->hw; | |
2179 | uint16_t length, offset; | |
2180 | if(vlan_tx_tag_present(skb)) { | |
2181 | if(!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2182 | ( adapter->hw.mng_cookie.status & | |
2183 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2184 | return 0; | |
2185 | } | |
2186 | if(htons(ETH_P_IP) == skb->protocol) { | |
2187 | const struct iphdr *ip = skb->nh.iph; | |
2188 | if(IPPROTO_UDP == ip->protocol) { | |
2189 | struct udphdr *udp = (struct udphdr *)(skb->h.uh); | |
2190 | if(ntohs(udp->dest) == 67) { | |
2191 | offset = (uint8_t *)udp + 8 - skb->data; | |
2192 | length = skb->len - offset; | |
2193 | ||
2194 | return e1000_mng_write_dhcp_info(hw, | |
2195 | (uint8_t *)udp + 8, length); | |
2196 | } | |
2197 | } | |
2198 | } else if((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) { | |
2199 | struct ethhdr *eth = (struct ethhdr *) skb->data; | |
2200 | if((htons(ETH_P_IP) == eth->h_proto)) { | |
2201 | const struct iphdr *ip = | |
2202 | (struct iphdr *)((uint8_t *)skb->data+14); | |
2203 | if(IPPROTO_UDP == ip->protocol) { | |
2204 | struct udphdr *udp = | |
2205 | (struct udphdr *)((uint8_t *)ip + | |
2206 | (ip->ihl << 2)); | |
2207 | if(ntohs(udp->dest) == 67) { | |
2208 | offset = (uint8_t *)udp + 8 - skb->data; | |
2209 | length = skb->len - offset; | |
2210 | ||
2211 | return e1000_mng_write_dhcp_info(hw, | |
2212 | (uint8_t *)udp + 8, | |
2213 | length); | |
2214 | } | |
2215 | } | |
2216 | } | |
2217 | } | |
2218 | return 0; | |
2219 | } | |
2220 | ||
1da177e4 LT |
2221 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2222 | static int | |
2223 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2224 | { | |
2225 | struct e1000_adapter *adapter = netdev->priv; | |
2226 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; | |
2227 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2228 | unsigned int tx_flags = 0; | |
2229 | unsigned int len = skb->len; | |
2230 | unsigned long flags; | |
2231 | unsigned int nr_frags = 0; | |
2232 | unsigned int mss = 0; | |
2233 | int count = 0; | |
2234 | int tso; | |
2235 | unsigned int f; | |
2236 | len -= skb->data_len; | |
2237 | ||
2238 | if(unlikely(skb->len <= 0)) { | |
2239 | dev_kfree_skb_any(skb); | |
2240 | return NETDEV_TX_OK; | |
2241 | } | |
2242 | ||
2243 | #ifdef NETIF_F_TSO | |
2244 | mss = skb_shinfo(skb)->tso_size; | |
2245 | /* The controller does a simple calculation to | |
2246 | * make sure there is enough room in the FIFO before | |
2247 | * initiating the DMA for each buffer. The calc is: | |
2248 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2249 | * overrun the FIFO, adjust the max buffer len if mss | |
2250 | * drops. */ | |
2251 | if(mss) { | |
2252 | max_per_txd = min(mss << 2, max_per_txd); | |
2253 | max_txd_pwr = fls(max_per_txd) - 1; | |
2254 | } | |
2255 | ||
2256 | if((mss) || (skb->ip_summed == CHECKSUM_HW)) | |
2257 | count++; | |
2258 | count++; /* for sentinel desc */ | |
2259 | #else | |
2260 | if(skb->ip_summed == CHECKSUM_HW) | |
2261 | count++; | |
2262 | #endif | |
2263 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
2264 | ||
2265 | if(adapter->pcix_82544) | |
2266 | count++; | |
2267 | ||
97338bde MC |
2268 | /* work-around for errata 10 and it applies to all controllers |
2269 | * in PCI-X mode, so add one more descriptor to the count | |
2270 | */ | |
2271 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
2272 | (len > 2015))) | |
2273 | count++; | |
2274 | ||
1da177e4 LT |
2275 | nr_frags = skb_shinfo(skb)->nr_frags; |
2276 | for(f = 0; f < nr_frags; f++) | |
2277 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
2278 | max_txd_pwr); | |
2279 | if(adapter->pcix_82544) | |
2280 | count += nr_frags; | |
2281 | ||
2282 | local_irq_save(flags); | |
2283 | if (!spin_trylock(&adapter->tx_lock)) { | |
2284 | /* Collision - tell upper layer to requeue */ | |
2285 | local_irq_restore(flags); | |
2286 | return NETDEV_TX_LOCKED; | |
2287 | } | |
2d7edb92 MC |
2288 | if(adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) ) |
2289 | e1000_transfer_dhcp_info(adapter, skb); | |
2290 | ||
1da177e4 LT |
2291 | |
2292 | /* need: count + 2 desc gap to keep tail from touching | |
2293 | * head, otherwise try next time */ | |
2294 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2)) { | |
2295 | netif_stop_queue(netdev); | |
2296 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2297 | return NETDEV_TX_BUSY; | |
2298 | } | |
2299 | ||
2300 | if(unlikely(adapter->hw.mac_type == e1000_82547)) { | |
2301 | if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
2302 | netif_stop_queue(netdev); | |
2303 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
2304 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2305 | return NETDEV_TX_BUSY; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
2310 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
2311 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2312 | } | |
2313 | ||
2314 | first = adapter->tx_ring.next_to_use; | |
2315 | ||
2316 | tso = e1000_tso(adapter, skb); | |
2317 | if (tso < 0) { | |
2318 | dev_kfree_skb_any(skb); | |
2319 | return NETDEV_TX_OK; | |
2320 | } | |
2321 | ||
2322 | if (likely(tso)) | |
2323 | tx_flags |= E1000_TX_FLAGS_TSO; | |
2324 | else if(likely(e1000_tx_csum(adapter, skb))) | |
2325 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
2326 | ||
2d7edb92 MC |
2327 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
2328 | * 82573 hardware supports TSO capabilities for IPv6 as well... | |
2329 | * no longer assume, we must. */ | |
2330 | if(likely(skb->protocol == ntohs(ETH_P_IP))) | |
2331 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
2332 | ||
1da177e4 LT |
2333 | e1000_tx_queue(adapter, |
2334 | e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss), | |
2335 | tx_flags); | |
2336 | ||
2337 | netdev->trans_start = jiffies; | |
2338 | ||
2339 | /* Make sure there is space in the ring for the next send. */ | |
2340 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2)) | |
2341 | netif_stop_queue(netdev); | |
2342 | ||
2343 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2344 | return NETDEV_TX_OK; | |
2345 | } | |
2346 | ||
2347 | /** | |
2348 | * e1000_tx_timeout - Respond to a Tx Hang | |
2349 | * @netdev: network interface device structure | |
2350 | **/ | |
2351 | ||
2352 | static void | |
2353 | e1000_tx_timeout(struct net_device *netdev) | |
2354 | { | |
2355 | struct e1000_adapter *adapter = netdev->priv; | |
2356 | ||
2357 | /* Do the reset outside of interrupt context */ | |
2358 | schedule_work(&adapter->tx_timeout_task); | |
2359 | } | |
2360 | ||
2361 | static void | |
2362 | e1000_tx_timeout_task(struct net_device *netdev) | |
2363 | { | |
2364 | struct e1000_adapter *adapter = netdev->priv; | |
2365 | ||
2366 | e1000_down(adapter); | |
2367 | e1000_up(adapter); | |
2368 | } | |
2369 | ||
2370 | /** | |
2371 | * e1000_get_stats - Get System Network Statistics | |
2372 | * @netdev: network interface device structure | |
2373 | * | |
2374 | * Returns the address of the device statistics structure. | |
2375 | * The statistics are actually updated from the timer callback. | |
2376 | **/ | |
2377 | ||
2378 | static struct net_device_stats * | |
2379 | e1000_get_stats(struct net_device *netdev) | |
2380 | { | |
2381 | struct e1000_adapter *adapter = netdev->priv; | |
2382 | ||
2383 | e1000_update_stats(adapter); | |
2384 | return &adapter->net_stats; | |
2385 | } | |
2386 | ||
2387 | /** | |
2388 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
2389 | * @netdev: network interface device structure | |
2390 | * @new_mtu: new value for maximum frame size | |
2391 | * | |
2392 | * Returns 0 on success, negative on failure | |
2393 | **/ | |
2394 | ||
2395 | static int | |
2396 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
2397 | { | |
2398 | struct e1000_adapter *adapter = netdev->priv; | |
1da177e4 LT |
2399 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
2400 | ||
2401 | if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || | |
2402 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2403 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
2404 | return -EINVAL; | |
2405 | } | |
2406 | ||
2d7edb92 MC |
2407 | #define MAX_STD_JUMBO_FRAME_SIZE 9216 |
2408 | /* might want this to be bigger enum check... */ | |
2409 | if (adapter->hw.mac_type == e1000_82573 && | |
2410 | max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
2411 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
2412 | "on 82573\n"); | |
1da177e4 | 2413 | return -EINVAL; |
2d7edb92 | 2414 | } |
1da177e4 | 2415 | |
2d7edb92 MC |
2416 | if(adapter->hw.mac_type > e1000_82547_rev_2) { |
2417 | adapter->rx_buffer_len = max_frame; | |
2418 | E1000_ROUNDUP(adapter->rx_buffer_len, 1024); | |
1da177e4 | 2419 | } else { |
2d7edb92 MC |
2420 | if(unlikely((adapter->hw.mac_type < e1000_82543) && |
2421 | (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) { | |
2422 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
2423 | "on 82542\n"); | |
2424 | return -EINVAL; | |
2425 | ||
2426 | } else { | |
2427 | if(max_frame <= E1000_RXBUFFER_2048) { | |
2428 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2429 | } else if(max_frame <= E1000_RXBUFFER_4096) { | |
2430 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
2431 | } else if(max_frame <= E1000_RXBUFFER_8192) { | |
2432 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
2433 | } else if(max_frame <= E1000_RXBUFFER_16384) { | |
2434 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
2435 | } | |
2436 | } | |
1da177e4 LT |
2437 | } |
2438 | ||
2d7edb92 MC |
2439 | netdev->mtu = new_mtu; |
2440 | ||
2441 | if(netif_running(netdev)) { | |
1da177e4 LT |
2442 | e1000_down(adapter); |
2443 | e1000_up(adapter); | |
2444 | } | |
2445 | ||
1da177e4 LT |
2446 | adapter->hw.max_frame_size = max_frame; |
2447 | ||
2448 | return 0; | |
2449 | } | |
2450 | ||
2451 | /** | |
2452 | * e1000_update_stats - Update the board statistics counters | |
2453 | * @adapter: board private structure | |
2454 | **/ | |
2455 | ||
2456 | void | |
2457 | e1000_update_stats(struct e1000_adapter *adapter) | |
2458 | { | |
2459 | struct e1000_hw *hw = &adapter->hw; | |
2460 | unsigned long flags; | |
2461 | uint16_t phy_tmp; | |
2462 | ||
2463 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
2464 | ||
2465 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2466 | ||
2467 | /* these counters are modified from e1000_adjust_tbi_stats, | |
2468 | * called from the interrupt context, so they must only | |
2469 | * be written while holding adapter->stats_lock | |
2470 | */ | |
2471 | ||
2472 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
2473 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
2474 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
2475 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
2476 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
2477 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
2478 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
2479 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
2480 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
2481 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
2482 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
2483 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
2484 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
2485 | ||
2486 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
2487 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
2488 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
2489 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
2490 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
2491 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
2492 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
2493 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
2494 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
2495 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
2496 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
2497 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
2498 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
2499 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
2500 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
2501 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
2502 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
2503 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
2504 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
2505 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
2506 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
2507 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
2508 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
2509 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
2510 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
2511 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
2512 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
2513 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
2514 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
2515 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
2516 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
2517 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
2518 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
2519 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
2520 | ||
2521 | /* used for adaptive IFS */ | |
2522 | ||
2523 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
2524 | adapter->stats.tpt += hw->tx_packet_delta; | |
2525 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
2526 | adapter->stats.colc += hw->collision_delta; | |
2527 | ||
2528 | if(hw->mac_type >= e1000_82543) { | |
2529 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); | |
2530 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
2531 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
2532 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
2533 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
2534 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
2535 | } | |
2d7edb92 MC |
2536 | if(hw->mac_type > e1000_82547_rev_2) { |
2537 | adapter->stats.iac += E1000_READ_REG(hw, IAC); | |
2538 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
2539 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
2540 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
2541 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
2542 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
2543 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
2544 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
2545 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
2546 | } | |
1da177e4 LT |
2547 | |
2548 | /* Fill out the OS statistics structure */ | |
2549 | ||
2550 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
2551 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
2552 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
2553 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
2554 | adapter->net_stats.multicast = adapter->stats.mprc; | |
2555 | adapter->net_stats.collisions = adapter->stats.colc; | |
2556 | ||
2557 | /* Rx Errors */ | |
2558 | ||
2559 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
2560 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
6d915757 MC |
2561 | adapter->stats.rlec + adapter->stats.mpc + |
2562 | adapter->stats.cexterr; | |
2563 | adapter->net_stats.rx_dropped = adapter->stats.mpc; | |
1da177e4 LT |
2564 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
2565 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
2566 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
2567 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
2568 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
2569 | ||
2570 | /* Tx Errors */ | |
2571 | ||
2572 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
2573 | adapter->stats.latecol; | |
2574 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
2575 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
2576 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
2577 | ||
2578 | /* Tx Dropped needs to be maintained elsewhere */ | |
2579 | ||
2580 | /* Phy Stats */ | |
2581 | ||
2582 | if(hw->media_type == e1000_media_type_copper) { | |
2583 | if((adapter->link_speed == SPEED_1000) && | |
2584 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { | |
2585 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
2586 | adapter->phy_stats.idle_errors += phy_tmp; | |
2587 | } | |
2588 | ||
2589 | if((hw->mac_type <= e1000_82546) && | |
2590 | (hw->phy_type == e1000_phy_m88) && | |
2591 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
2592 | adapter->phy_stats.receive_errors += phy_tmp; | |
2593 | } | |
2594 | ||
2595 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
2596 | } | |
2597 | ||
2598 | /** | |
2599 | * e1000_intr - Interrupt Handler | |
2600 | * @irq: interrupt number | |
2601 | * @data: pointer to a network interface device structure | |
2602 | * @pt_regs: CPU registers structure | |
2603 | **/ | |
2604 | ||
2605 | static irqreturn_t | |
2606 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
2607 | { | |
2608 | struct net_device *netdev = data; | |
2609 | struct e1000_adapter *adapter = netdev->priv; | |
2610 | struct e1000_hw *hw = &adapter->hw; | |
2611 | uint32_t icr = E1000_READ_REG(hw, ICR); | |
2612 | #ifndef CONFIG_E1000_NAPI | |
2613 | unsigned int i; | |
2614 | #endif | |
2615 | ||
2616 | if(unlikely(!icr)) | |
2617 | return IRQ_NONE; /* Not our interrupt */ | |
2618 | ||
2619 | if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { | |
2620 | hw->get_link_status = 1; | |
2621 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2622 | } | |
2623 | ||
2624 | #ifdef CONFIG_E1000_NAPI | |
2625 | if(likely(netif_rx_schedule_prep(netdev))) { | |
2626 | ||
2627 | /* Disable interrupts and register for poll. The flush | |
2628 | of the posted write is intentionally left out. | |
2629 | */ | |
2630 | ||
2631 | atomic_inc(&adapter->irq_sem); | |
2632 | E1000_WRITE_REG(hw, IMC, ~0); | |
2633 | __netif_rx_schedule(netdev); | |
2634 | } | |
2635 | #else | |
2636 | /* Writing IMC and IMS is needed for 82547. | |
2637 | Due to Hub Link bus being occupied, an interrupt | |
2638 | de-assertion message is not able to be sent. | |
2639 | When an interrupt assertion message is generated later, | |
2640 | two messages are re-ordered and sent out. | |
2641 | That causes APIC to think 82547 is in de-assertion | |
2642 | state, while 82547 is in assertion state, resulting | |
2643 | in dead lock. Writing IMC forces 82547 into | |
2644 | de-assertion state. | |
2645 | */ | |
2646 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){ | |
2647 | atomic_inc(&adapter->irq_sem); | |
2648 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
2649 | } | |
2650 | ||
2651 | for(i = 0; i < E1000_MAX_INTR; i++) | |
2d7edb92 | 2652 | if(unlikely(!adapter->clean_rx(adapter) & |
1da177e4 LT |
2653 | !e1000_clean_tx_irq(adapter))) |
2654 | break; | |
2655 | ||
2656 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) | |
2657 | e1000_irq_enable(adapter); | |
2658 | #endif | |
2659 | ||
2660 | return IRQ_HANDLED; | |
2661 | } | |
2662 | ||
2663 | #ifdef CONFIG_E1000_NAPI | |
2664 | /** | |
2665 | * e1000_clean - NAPI Rx polling callback | |
2666 | * @adapter: board private structure | |
2667 | **/ | |
2668 | ||
2669 | static int | |
2670 | e1000_clean(struct net_device *netdev, int *budget) | |
2671 | { | |
2672 | struct e1000_adapter *adapter = netdev->priv; | |
2673 | int work_to_do = min(*budget, netdev->quota); | |
2674 | int tx_cleaned; | |
2675 | int work_done = 0; | |
2676 | ||
2677 | tx_cleaned = e1000_clean_tx_irq(adapter); | |
2d7edb92 | 2678 | adapter->clean_rx(adapter, &work_done, work_to_do); |
1da177e4 LT |
2679 | |
2680 | *budget -= work_done; | |
2681 | netdev->quota -= work_done; | |
2682 | ||
f0d11ed0 MC |
2683 | /* If no Tx and no Rx work done, exit the polling mode */ |
2684 | if ((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { | |
1da177e4 LT |
2685 | netif_rx_complete(netdev); |
2686 | e1000_irq_enable(adapter); | |
2687 | return 0; | |
2688 | } | |
2689 | ||
2690 | return 1; | |
2691 | } | |
2692 | ||
2693 | #endif | |
2694 | /** | |
2695 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
2696 | * @adapter: board private structure | |
2697 | **/ | |
2698 | ||
2699 | static boolean_t | |
2700 | e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
2701 | { | |
2702 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
2703 | struct net_device *netdev = adapter->netdev; | |
2704 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
2705 | struct e1000_buffer *buffer_info; | |
2706 | unsigned int i, eop; | |
2707 | boolean_t cleaned = FALSE; | |
2708 | ||
2709 | i = tx_ring->next_to_clean; | |
2710 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2711 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2712 | ||
2713 | while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { | |
2701234f MC |
2714 | /* Premature writeback of Tx descriptors clear (free buffers |
2715 | * and unmap pci_mapping) previous_buffer_info */ | |
1da177e4 | 2716 | if (likely(adapter->previous_buffer_info.skb != NULL)) { |
2701234f | 2717 | e1000_unmap_and_free_tx_resource(adapter, |
1da177e4 LT |
2718 | &adapter->previous_buffer_info); |
2719 | } | |
2720 | ||
2721 | for(cleaned = FALSE; !cleaned; ) { | |
2722 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2723 | buffer_info = &tx_ring->buffer_info[i]; | |
2724 | cleaned = (i == eop); | |
2725 | ||
2701234f MC |
2726 | #ifdef NETIF_F_TSO |
2727 | if (!(netdev->features & NETIF_F_TSO)) { | |
2728 | #endif | |
2729 | e1000_unmap_and_free_tx_resource(adapter, | |
2730 | buffer_info); | |
2731 | #ifdef NETIF_F_TSO | |
1da177e4 | 2732 | } else { |
2701234f MC |
2733 | if (cleaned) { |
2734 | memcpy(&adapter->previous_buffer_info, | |
2735 | buffer_info, | |
2736 | sizeof(struct e1000_buffer)); | |
2737 | memset(buffer_info, 0, | |
2738 | sizeof(struct e1000_buffer)); | |
2739 | } else { | |
2740 | e1000_unmap_and_free_tx_resource( | |
2741 | adapter, buffer_info); | |
2742 | } | |
1da177e4 | 2743 | } |
2701234f | 2744 | #endif |
1da177e4 LT |
2745 | |
2746 | tx_desc->buffer_addr = 0; | |
2747 | tx_desc->lower.data = 0; | |
2748 | tx_desc->upper.data = 0; | |
2749 | ||
1da177e4 LT |
2750 | if(unlikely(++i == tx_ring->count)) i = 0; |
2751 | } | |
2752 | ||
2753 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2754 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2755 | } | |
2756 | ||
2757 | tx_ring->next_to_clean = i; | |
2758 | ||
2759 | spin_lock(&adapter->tx_lock); | |
2760 | ||
2761 | if(unlikely(cleaned && netif_queue_stopped(netdev) && | |
2762 | netif_carrier_ok(netdev))) | |
2763 | netif_wake_queue(netdev); | |
2764 | ||
2765 | spin_unlock(&adapter->tx_lock); | |
2766 | ||
2767 | if(adapter->detect_tx_hung) { | |
2768 | /* detect a transmit hang in hardware, this serializes the | |
2769 | * check with the clearing of time_stamp and movement of i */ | |
2770 | adapter->detect_tx_hung = FALSE; | |
70b8f1e1 MC |
2771 | if (tx_ring->buffer_info[i].dma && |
2772 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) | |
2773 | && !(E1000_READ_REG(&adapter->hw, STATUS) & | |
2774 | E1000_STATUS_TXOFF)) { | |
2775 | ||
2776 | /* detected Tx unit hang */ | |
2777 | i = tx_ring->next_to_clean; | |
2778 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2779 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2780 | DPRINTK(TX_ERR, ERR, "Detected Tx Unit Hang\n" | |
2781 | " TDH <%x>\n" | |
2782 | " TDT <%x>\n" | |
2783 | " next_to_use <%x>\n" | |
2784 | " next_to_clean <%x>\n" | |
2785 | "buffer_info[next_to_clean]\n" | |
2786 | " dma <%llx>\n" | |
2787 | " time_stamp <%lx>\n" | |
2788 | " next_to_watch <%x>\n" | |
2789 | " jiffies <%lx>\n" | |
2790 | " next_to_watch.status <%x>\n", | |
2791 | E1000_READ_REG(&adapter->hw, TDH), | |
2792 | E1000_READ_REG(&adapter->hw, TDT), | |
2793 | tx_ring->next_to_use, | |
2794 | i, | |
2795 | tx_ring->buffer_info[i].dma, | |
2796 | tx_ring->buffer_info[i].time_stamp, | |
2797 | eop, | |
2798 | jiffies, | |
2799 | eop_desc->upper.fields.status); | |
1da177e4 | 2800 | netif_stop_queue(netdev); |
70b8f1e1 | 2801 | } |
1da177e4 | 2802 | } |
2701234f MC |
2803 | #ifdef NETIF_F_TSO |
2804 | ||
2805 | if( unlikely(!(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
2806 | time_after(jiffies, adapter->previous_buffer_info.time_stamp + HZ))) | |
2807 | e1000_unmap_and_free_tx_resource( | |
2808 | adapter, &adapter->previous_buffer_info); | |
1da177e4 | 2809 | |
2701234f | 2810 | #endif |
1da177e4 LT |
2811 | return cleaned; |
2812 | } | |
2813 | ||
2814 | /** | |
2815 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
2816 | * @adapter: board private structure |
2817 | * @status_err: receive descriptor status and error fields | |
2818 | * @csum: receive descriptor csum field | |
2819 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
2820 | **/ |
2821 | ||
2822 | static inline void | |
2823 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2d7edb92 MC |
2824 | uint32_t status_err, uint32_t csum, |
2825 | struct sk_buff *skb) | |
1da177e4 | 2826 | { |
2d7edb92 MC |
2827 | uint16_t status = (uint16_t)status_err; |
2828 | uint8_t errors = (uint8_t)(status_err >> 24); | |
2829 | skb->ip_summed = CHECKSUM_NONE; | |
2830 | ||
1da177e4 | 2831 | /* 82543 or newer only */ |
2d7edb92 | 2832 | if(unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 2833 | /* Ignore Checksum bit is set */ |
2d7edb92 MC |
2834 | if(unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2835 | /* TCP/UDP checksum error bit is set */ | |
2836 | if(unlikely(errors & E1000_RXD_ERR_TCPE)) { | |
1da177e4 | 2837 | /* let the stack verify checksum errors */ |
1da177e4 | 2838 | adapter->hw_csum_err++; |
2d7edb92 MC |
2839 | return; |
2840 | } | |
2841 | /* TCP/UDP Checksum has not been calculated */ | |
2842 | if(adapter->hw.mac_type <= e1000_82547_rev_2) { | |
2843 | if(!(status & E1000_RXD_STAT_TCPCS)) | |
2844 | return; | |
1da177e4 | 2845 | } else { |
2d7edb92 MC |
2846 | if(!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2847 | return; | |
2848 | } | |
2849 | /* It must be a TCP or UDP packet with a valid checksum */ | |
2850 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
2851 | /* TCP checksum is good */ |
2852 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
2853 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
2854 | /* IP fragment with UDP payload */ | |
2855 | /* Hardware complements the payload checksum, so we undo it | |
2856 | * and then put the value in host order for further stack use. | |
2857 | */ | |
2858 | csum = ntohl(csum ^ 0xFFFF); | |
2859 | skb->csum = csum; | |
2860 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 2861 | } |
2d7edb92 | 2862 | adapter->hw_csum_good++; |
1da177e4 LT |
2863 | } |
2864 | ||
2865 | /** | |
2d7edb92 | 2866 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
2867 | * @adapter: board private structure |
2868 | **/ | |
2869 | ||
2870 | static boolean_t | |
2871 | #ifdef CONFIG_E1000_NAPI | |
2872 | e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done, | |
2873 | int work_to_do) | |
2874 | #else | |
2875 | e1000_clean_rx_irq(struct e1000_adapter *adapter) | |
2876 | #endif | |
2877 | { | |
2878 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2879 | struct net_device *netdev = adapter->netdev; | |
2880 | struct pci_dev *pdev = adapter->pdev; | |
2881 | struct e1000_rx_desc *rx_desc; | |
2882 | struct e1000_buffer *buffer_info; | |
2883 | struct sk_buff *skb; | |
2884 | unsigned long flags; | |
2885 | uint32_t length; | |
2886 | uint8_t last_byte; | |
2887 | unsigned int i; | |
2888 | boolean_t cleaned = FALSE; | |
2889 | ||
2890 | i = rx_ring->next_to_clean; | |
2891 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2892 | ||
2893 | while(rx_desc->status & E1000_RXD_STAT_DD) { | |
2894 | buffer_info = &rx_ring->buffer_info[i]; | |
2895 | #ifdef CONFIG_E1000_NAPI | |
2896 | if(*work_done >= work_to_do) | |
2897 | break; | |
2898 | (*work_done)++; | |
2899 | #endif | |
2900 | cleaned = TRUE; | |
2901 | ||
2902 | pci_unmap_single(pdev, | |
2903 | buffer_info->dma, | |
2904 | buffer_info->length, | |
2905 | PCI_DMA_FROMDEVICE); | |
2906 | ||
2907 | skb = buffer_info->skb; | |
2908 | length = le16_to_cpu(rx_desc->length); | |
2909 | ||
2910 | if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) { | |
2911 | /* All receives must fit into a single buffer */ | |
2912 | E1000_DBG("%s: Receive packet consumed multiple" | |
2913 | " buffers\n", netdev->name); | |
2914 | dev_kfree_skb_irq(skb); | |
2915 | goto next_desc; | |
2916 | } | |
2917 | ||
2918 | if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { | |
2919 | last_byte = *(skb->data + length - 1); | |
2920 | if(TBI_ACCEPT(&adapter->hw, rx_desc->status, | |
2921 | rx_desc->errors, length, last_byte)) { | |
2922 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2923 | e1000_tbi_adjust_stats(&adapter->hw, | |
2924 | &adapter->stats, | |
2925 | length, skb->data); | |
2926 | spin_unlock_irqrestore(&adapter->stats_lock, | |
2927 | flags); | |
2928 | length--; | |
2929 | } else { | |
2930 | dev_kfree_skb_irq(skb); | |
2931 | goto next_desc; | |
2932 | } | |
2933 | } | |
2934 | ||
2935 | /* Good Receive */ | |
2936 | skb_put(skb, length - ETHERNET_FCS_SIZE); | |
2937 | ||
2938 | /* Receive Checksum Offload */ | |
2d7edb92 MC |
2939 | e1000_rx_checksum(adapter, |
2940 | (uint32_t)(rx_desc->status) | | |
2941 | ((uint32_t)(rx_desc->errors) << 24), | |
2942 | rx_desc->csum, skb); | |
1da177e4 LT |
2943 | skb->protocol = eth_type_trans(skb, netdev); |
2944 | #ifdef CONFIG_E1000_NAPI | |
2945 | if(unlikely(adapter->vlgrp && | |
2946 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2947 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
2d7edb92 MC |
2948 | le16_to_cpu(rx_desc->special) & |
2949 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
2950 | } else { |
2951 | netif_receive_skb(skb); | |
2952 | } | |
2953 | #else /* CONFIG_E1000_NAPI */ | |
2954 | if(unlikely(adapter->vlgrp && | |
2955 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2956 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
2957 | le16_to_cpu(rx_desc->special) & | |
2958 | E1000_RXD_SPC_VLAN_MASK); | |
2959 | } else { | |
2960 | netif_rx(skb); | |
2961 | } | |
2962 | #endif /* CONFIG_E1000_NAPI */ | |
2963 | netdev->last_rx = jiffies; | |
2964 | ||
2965 | next_desc: | |
2966 | rx_desc->status = 0; | |
2967 | buffer_info->skb = NULL; | |
2968 | if(unlikely(++i == rx_ring->count)) i = 0; | |
2969 | ||
2970 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2971 | } | |
1da177e4 | 2972 | rx_ring->next_to_clean = i; |
2d7edb92 MC |
2973 | adapter->alloc_rx_buf(adapter); |
2974 | ||
2975 | return cleaned; | |
2976 | } | |
2977 | ||
2978 | /** | |
2979 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
2980 | * @adapter: board private structure | |
2981 | **/ | |
2982 | ||
2983 | static boolean_t | |
2984 | #ifdef CONFIG_E1000_NAPI | |
2985 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, int *work_done, | |
2986 | int work_to_do) | |
2987 | #else | |
2988 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter) | |
2989 | #endif | |
2990 | { | |
2991 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2992 | union e1000_rx_desc_packet_split *rx_desc; | |
2993 | struct net_device *netdev = adapter->netdev; | |
2994 | struct pci_dev *pdev = adapter->pdev; | |
2995 | struct e1000_buffer *buffer_info; | |
2996 | struct e1000_ps_page *ps_page; | |
2997 | struct e1000_ps_page_dma *ps_page_dma; | |
2998 | struct sk_buff *skb; | |
2999 | unsigned int i, j; | |
3000 | uint32_t length, staterr; | |
3001 | boolean_t cleaned = FALSE; | |
3002 | ||
3003 | i = rx_ring->next_to_clean; | |
3004 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
3005 | staterr = rx_desc->wb.middle.status_error; | |
3006 | ||
3007 | while(staterr & E1000_RXD_STAT_DD) { | |
3008 | buffer_info = &rx_ring->buffer_info[i]; | |
3009 | ps_page = &rx_ring->ps_page[i]; | |
3010 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3011 | #ifdef CONFIG_E1000_NAPI | |
3012 | if(unlikely(*work_done >= work_to_do)) | |
3013 | break; | |
3014 | (*work_done)++; | |
3015 | #endif | |
3016 | cleaned = TRUE; | |
3017 | pci_unmap_single(pdev, buffer_info->dma, | |
3018 | buffer_info->length, | |
3019 | PCI_DMA_FROMDEVICE); | |
3020 | ||
3021 | skb = buffer_info->skb; | |
3022 | ||
3023 | if(unlikely(!(staterr & E1000_RXD_STAT_EOP))) { | |
3024 | E1000_DBG("%s: Packet Split buffers didn't pick up" | |
3025 | " the full packet\n", netdev->name); | |
3026 | dev_kfree_skb_irq(skb); | |
3027 | goto next_desc; | |
3028 | } | |
1da177e4 | 3029 | |
2d7edb92 MC |
3030 | if(unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
3031 | dev_kfree_skb_irq(skb); | |
3032 | goto next_desc; | |
3033 | } | |
3034 | ||
3035 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3036 | ||
3037 | if(unlikely(!length)) { | |
3038 | E1000_DBG("%s: Last part of the packet spanning" | |
3039 | " multiple descriptors\n", netdev->name); | |
3040 | dev_kfree_skb_irq(skb); | |
3041 | goto next_desc; | |
3042 | } | |
3043 | ||
3044 | /* Good Receive */ | |
3045 | skb_put(skb, length); | |
3046 | ||
3047 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
3048 | if(!(length = le16_to_cpu(rx_desc->wb.upper.length[j]))) | |
3049 | break; | |
3050 | ||
3051 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], | |
3052 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3053 | ps_page_dma->ps_page_dma[j] = 0; | |
3054 | skb_shinfo(skb)->frags[j].page = | |
3055 | ps_page->ps_page[j]; | |
3056 | ps_page->ps_page[j] = NULL; | |
3057 | skb_shinfo(skb)->frags[j].page_offset = 0; | |
3058 | skb_shinfo(skb)->frags[j].size = length; | |
3059 | skb_shinfo(skb)->nr_frags++; | |
3060 | skb->len += length; | |
3061 | skb->data_len += length; | |
3062 | } | |
3063 | ||
3064 | e1000_rx_checksum(adapter, staterr, | |
3065 | rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); | |
3066 | skb->protocol = eth_type_trans(skb, netdev); | |
3067 | ||
3068 | #ifdef HAVE_RX_ZERO_COPY | |
3069 | if(likely(rx_desc->wb.upper.header_status & | |
3070 | E1000_RXDPS_HDRSTAT_HDRSP)) | |
3071 | skb_shinfo(skb)->zero_copy = TRUE; | |
3072 | #endif | |
3073 | #ifdef CONFIG_E1000_NAPI | |
3074 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3075 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
3076 | le16_to_cpu(rx_desc->wb.middle.vlan & | |
3077 | E1000_RXD_SPC_VLAN_MASK)); | |
3078 | } else { | |
3079 | netif_receive_skb(skb); | |
3080 | } | |
3081 | #else /* CONFIG_E1000_NAPI */ | |
3082 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3083 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
3084 | le16_to_cpu(rx_desc->wb.middle.vlan & | |
3085 | E1000_RXD_SPC_VLAN_MASK)); | |
3086 | } else { | |
3087 | netif_rx(skb); | |
3088 | } | |
3089 | #endif /* CONFIG_E1000_NAPI */ | |
3090 | netdev->last_rx = jiffies; | |
3091 | ||
3092 | next_desc: | |
3093 | rx_desc->wb.middle.status_error &= ~0xFF; | |
3094 | buffer_info->skb = NULL; | |
3095 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3096 | ||
3097 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
3098 | staterr = rx_desc->wb.middle.status_error; | |
3099 | } | |
3100 | rx_ring->next_to_clean = i; | |
3101 | adapter->alloc_rx_buf(adapter); | |
1da177e4 LT |
3102 | |
3103 | return cleaned; | |
3104 | } | |
3105 | ||
3106 | /** | |
2d7edb92 | 3107 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3108 | * @adapter: address of board private structure |
3109 | **/ | |
3110 | ||
3111 | static void | |
3112 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter) | |
3113 | { | |
3114 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
3115 | struct net_device *netdev = adapter->netdev; | |
3116 | struct pci_dev *pdev = adapter->pdev; | |
3117 | struct e1000_rx_desc *rx_desc; | |
3118 | struct e1000_buffer *buffer_info; | |
3119 | struct sk_buff *skb; | |
3120 | unsigned int i, bufsz; | |
3121 | ||
3122 | i = rx_ring->next_to_use; | |
3123 | buffer_info = &rx_ring->buffer_info[i]; | |
3124 | ||
3125 | while(!buffer_info->skb) { | |
3126 | bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
3127 | ||
3128 | skb = dev_alloc_skb(bufsz); | |
3129 | if(unlikely(!skb)) { | |
3130 | /* Better luck next round */ | |
3131 | break; | |
3132 | } | |
3133 | ||
3134 | /* fix for errata 23, cant cross 64kB boundary */ | |
3135 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
3136 | struct sk_buff *oldskb = skb; | |
3137 | DPRINTK(RX_ERR,ERR, | |
3138 | "skb align check failed: %u bytes at %p\n", | |
3139 | bufsz, skb->data); | |
3140 | /* try again, without freeing the previous */ | |
3141 | skb = dev_alloc_skb(bufsz); | |
3142 | if (!skb) { | |
3143 | dev_kfree_skb(oldskb); | |
3144 | break; | |
3145 | } | |
3146 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
3147 | /* give up */ | |
3148 | dev_kfree_skb(skb); | |
3149 | dev_kfree_skb(oldskb); | |
3150 | break; /* while !buffer_info->skb */ | |
3151 | } else { | |
3152 | /* move on with the new one */ | |
3153 | dev_kfree_skb(oldskb); | |
3154 | } | |
3155 | } | |
3156 | ||
3157 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
3158 | * this will result in a 16 byte aligned IP header after | |
3159 | * the 14 byte MAC header is removed | |
3160 | */ | |
3161 | skb_reserve(skb, NET_IP_ALIGN); | |
3162 | ||
3163 | skb->dev = netdev; | |
3164 | ||
3165 | buffer_info->skb = skb; | |
3166 | buffer_info->length = adapter->rx_buffer_len; | |
3167 | buffer_info->dma = pci_map_single(pdev, | |
3168 | skb->data, | |
3169 | adapter->rx_buffer_len, | |
3170 | PCI_DMA_FROMDEVICE); | |
3171 | ||
3172 | /* fix for errata 23, cant cross 64kB boundary */ | |
3173 | if(!e1000_check_64k_bound(adapter, | |
3174 | (void *)(unsigned long)buffer_info->dma, | |
3175 | adapter->rx_buffer_len)) { | |
3176 | DPRINTK(RX_ERR,ERR, | |
3177 | "dma align check failed: %u bytes at %ld\n", | |
3178 | adapter->rx_buffer_len, (unsigned long)buffer_info->dma); | |
3179 | ||
3180 | dev_kfree_skb(skb); | |
3181 | buffer_info->skb = NULL; | |
3182 | ||
3183 | pci_unmap_single(pdev, | |
3184 | buffer_info->dma, | |
3185 | adapter->rx_buffer_len, | |
3186 | PCI_DMA_FROMDEVICE); | |
3187 | ||
3188 | break; /* while !buffer_info->skb */ | |
3189 | } | |
3190 | ||
3191 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3192 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3193 | ||
3194 | if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { | |
3195 | /* Force memory writes to complete before letting h/w | |
3196 | * know there are new descriptors to fetch. (Only | |
3197 | * applicable for weak-ordered memory model archs, | |
3198 | * such as IA-64). */ | |
3199 | wmb(); | |
3200 | ||
3201 | E1000_WRITE_REG(&adapter->hw, RDT, i); | |
3202 | } | |
3203 | ||
3204 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3205 | buffer_info = &rx_ring->buffer_info[i]; | |
3206 | } | |
3207 | ||
3208 | rx_ring->next_to_use = i; | |
3209 | } | |
3210 | ||
2d7edb92 MC |
3211 | /** |
3212 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
3213 | * @adapter: address of board private structure | |
3214 | **/ | |
3215 | ||
3216 | static void | |
3217 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter) | |
3218 | { | |
3219 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
3220 | struct net_device *netdev = adapter->netdev; | |
3221 | struct pci_dev *pdev = adapter->pdev; | |
3222 | union e1000_rx_desc_packet_split *rx_desc; | |
3223 | struct e1000_buffer *buffer_info; | |
3224 | struct e1000_ps_page *ps_page; | |
3225 | struct e1000_ps_page_dma *ps_page_dma; | |
3226 | struct sk_buff *skb; | |
3227 | unsigned int i, j; | |
3228 | ||
3229 | i = rx_ring->next_to_use; | |
3230 | buffer_info = &rx_ring->buffer_info[i]; | |
3231 | ps_page = &rx_ring->ps_page[i]; | |
3232 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3233 | ||
3234 | while(!buffer_info->skb) { | |
3235 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
3236 | ||
3237 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
3238 | if(unlikely(!ps_page->ps_page[j])) { | |
3239 | ps_page->ps_page[j] = | |
3240 | alloc_page(GFP_ATOMIC); | |
3241 | if(unlikely(!ps_page->ps_page[j])) | |
3242 | goto no_buffers; | |
3243 | ps_page_dma->ps_page_dma[j] = | |
3244 | pci_map_page(pdev, | |
3245 | ps_page->ps_page[j], | |
3246 | 0, PAGE_SIZE, | |
3247 | PCI_DMA_FROMDEVICE); | |
3248 | } | |
3249 | /* Refresh the desc even if buffer_addrs didn't | |
3250 | * change because each write-back erases this info. | |
3251 | */ | |
3252 | rx_desc->read.buffer_addr[j+1] = | |
3253 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
3254 | } | |
3255 | ||
3256 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
3257 | ||
3258 | if(unlikely(!skb)) | |
3259 | break; | |
3260 | ||
3261 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
3262 | * this will result in a 16 byte aligned IP header after | |
3263 | * the 14 byte MAC header is removed | |
3264 | */ | |
3265 | skb_reserve(skb, NET_IP_ALIGN); | |
3266 | ||
3267 | skb->dev = netdev; | |
3268 | ||
3269 | buffer_info->skb = skb; | |
3270 | buffer_info->length = adapter->rx_ps_bsize0; | |
3271 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
3272 | adapter->rx_ps_bsize0, | |
3273 | PCI_DMA_FROMDEVICE); | |
3274 | ||
3275 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
3276 | ||
3277 | if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { | |
3278 | /* Force memory writes to complete before letting h/w | |
3279 | * know there are new descriptors to fetch. (Only | |
3280 | * applicable for weak-ordered memory model archs, | |
3281 | * such as IA-64). */ | |
3282 | wmb(); | |
3283 | /* Hardware increments by 16 bytes, but packet split | |
3284 | * descriptors are 32 bytes...so we increment tail | |
3285 | * twice as much. | |
3286 | */ | |
3287 | E1000_WRITE_REG(&adapter->hw, RDT, i<<1); | |
3288 | } | |
3289 | ||
3290 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3291 | buffer_info = &rx_ring->buffer_info[i]; | |
3292 | ps_page = &rx_ring->ps_page[i]; | |
3293 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3294 | } | |
3295 | ||
3296 | no_buffers: | |
3297 | rx_ring->next_to_use = i; | |
3298 | } | |
3299 | ||
1da177e4 LT |
3300 | /** |
3301 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
3302 | * @adapter: | |
3303 | **/ | |
3304 | ||
3305 | static void | |
3306 | e1000_smartspeed(struct e1000_adapter *adapter) | |
3307 | { | |
3308 | uint16_t phy_status; | |
3309 | uint16_t phy_ctrl; | |
3310 | ||
3311 | if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || | |
3312 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) | |
3313 | return; | |
3314 | ||
3315 | if(adapter->smartspeed == 0) { | |
3316 | /* If Master/Slave config fault is asserted twice, | |
3317 | * we assume back-to-back */ | |
3318 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
3319 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
3320 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
3321 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
3322 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
3323 | if(phy_ctrl & CR_1000T_MS_ENABLE) { | |
3324 | phy_ctrl &= ~CR_1000T_MS_ENABLE; | |
3325 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
3326 | phy_ctrl); | |
3327 | adapter->smartspeed++; | |
3328 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
3329 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, | |
3330 | &phy_ctrl)) { | |
3331 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
3332 | MII_CR_RESTART_AUTO_NEG); | |
3333 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
3334 | phy_ctrl); | |
3335 | } | |
3336 | } | |
3337 | return; | |
3338 | } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { | |
3339 | /* If still no link, perhaps using 2/3 pair cable */ | |
3340 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
3341 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
3342 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
3343 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
3344 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { | |
3345 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
3346 | MII_CR_RESTART_AUTO_NEG); | |
3347 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
3348 | } | |
3349 | } | |
3350 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
3351 | if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX) | |
3352 | adapter->smartspeed = 0; | |
3353 | } | |
3354 | ||
3355 | /** | |
3356 | * e1000_ioctl - | |
3357 | * @netdev: | |
3358 | * @ifreq: | |
3359 | * @cmd: | |
3360 | **/ | |
3361 | ||
3362 | static int | |
3363 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
3364 | { | |
3365 | switch (cmd) { | |
3366 | case SIOCGMIIPHY: | |
3367 | case SIOCGMIIREG: | |
3368 | case SIOCSMIIREG: | |
3369 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
3370 | default: | |
3371 | return -EOPNOTSUPP; | |
3372 | } | |
3373 | } | |
3374 | ||
3375 | /** | |
3376 | * e1000_mii_ioctl - | |
3377 | * @netdev: | |
3378 | * @ifreq: | |
3379 | * @cmd: | |
3380 | **/ | |
3381 | ||
3382 | static int | |
3383 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
3384 | { | |
3385 | struct e1000_adapter *adapter = netdev->priv; | |
3386 | struct mii_ioctl_data *data = if_mii(ifr); | |
3387 | int retval; | |
3388 | uint16_t mii_reg; | |
3389 | uint16_t spddplx; | |
3390 | ||
3391 | if(adapter->hw.media_type != e1000_media_type_copper) | |
3392 | return -EOPNOTSUPP; | |
3393 | ||
3394 | switch (cmd) { | |
3395 | case SIOCGMIIPHY: | |
3396 | data->phy_id = adapter->hw.phy_addr; | |
3397 | break; | |
3398 | case SIOCGMIIREG: | |
3399 | if (!capable(CAP_NET_ADMIN)) | |
3400 | return -EPERM; | |
3401 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, | |
3402 | &data->val_out)) | |
3403 | return -EIO; | |
3404 | break; | |
3405 | case SIOCSMIIREG: | |
3406 | if (!capable(CAP_NET_ADMIN)) | |
3407 | return -EPERM; | |
3408 | if (data->reg_num & ~(0x1F)) | |
3409 | return -EFAULT; | |
3410 | mii_reg = data->val_in; | |
3411 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, | |
3412 | mii_reg)) | |
3413 | return -EIO; | |
3414 | if (adapter->hw.phy_type == e1000_phy_m88) { | |
3415 | switch (data->reg_num) { | |
3416 | case PHY_CTRL: | |
3417 | if(mii_reg & MII_CR_POWER_DOWN) | |
3418 | break; | |
3419 | if(mii_reg & MII_CR_AUTO_NEG_EN) { | |
3420 | adapter->hw.autoneg = 1; | |
3421 | adapter->hw.autoneg_advertised = 0x2F; | |
3422 | } else { | |
3423 | if (mii_reg & 0x40) | |
3424 | spddplx = SPEED_1000; | |
3425 | else if (mii_reg & 0x2000) | |
3426 | spddplx = SPEED_100; | |
3427 | else | |
3428 | spddplx = SPEED_10; | |
3429 | spddplx += (mii_reg & 0x100) | |
3430 | ? FULL_DUPLEX : | |
3431 | HALF_DUPLEX; | |
3432 | retval = e1000_set_spd_dplx(adapter, | |
3433 | spddplx); | |
3434 | if(retval) | |
3435 | return retval; | |
3436 | } | |
3437 | if(netif_running(adapter->netdev)) { | |
3438 | e1000_down(adapter); | |
3439 | e1000_up(adapter); | |
3440 | } else | |
3441 | e1000_reset(adapter); | |
3442 | break; | |
3443 | case M88E1000_PHY_SPEC_CTRL: | |
3444 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
3445 | if (e1000_phy_reset(&adapter->hw)) | |
3446 | return -EIO; | |
3447 | break; | |
3448 | } | |
3449 | } else { | |
3450 | switch (data->reg_num) { | |
3451 | case PHY_CTRL: | |
3452 | if(mii_reg & MII_CR_POWER_DOWN) | |
3453 | break; | |
3454 | if(netif_running(adapter->netdev)) { | |
3455 | e1000_down(adapter); | |
3456 | e1000_up(adapter); | |
3457 | } else | |
3458 | e1000_reset(adapter); | |
3459 | break; | |
3460 | } | |
3461 | } | |
3462 | break; | |
3463 | default: | |
3464 | return -EOPNOTSUPP; | |
3465 | } | |
3466 | return E1000_SUCCESS; | |
3467 | } | |
3468 | ||
3469 | void | |
3470 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
3471 | { | |
3472 | struct e1000_adapter *adapter = hw->back; | |
3473 | ||
3474 | int ret; | |
3475 | ret = pci_set_mwi(adapter->pdev); | |
3476 | } | |
3477 | ||
3478 | void | |
3479 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
3480 | { | |
3481 | struct e1000_adapter *adapter = hw->back; | |
3482 | ||
3483 | pci_clear_mwi(adapter->pdev); | |
3484 | } | |
3485 | ||
3486 | void | |
3487 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
3488 | { | |
3489 | struct e1000_adapter *adapter = hw->back; | |
3490 | ||
3491 | pci_read_config_word(adapter->pdev, reg, value); | |
3492 | } | |
3493 | ||
3494 | void | |
3495 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
3496 | { | |
3497 | struct e1000_adapter *adapter = hw->back; | |
3498 | ||
3499 | pci_write_config_word(adapter->pdev, reg, *value); | |
3500 | } | |
3501 | ||
3502 | uint32_t | |
3503 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
3504 | { | |
3505 | return inl(port); | |
3506 | } | |
3507 | ||
3508 | void | |
3509 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
3510 | { | |
3511 | outl(value, port); | |
3512 | } | |
3513 | ||
3514 | static void | |
3515 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
3516 | { | |
3517 | struct e1000_adapter *adapter = netdev->priv; | |
3518 | uint32_t ctrl, rctl; | |
3519 | ||
3520 | e1000_irq_disable(adapter); | |
3521 | adapter->vlgrp = grp; | |
3522 | ||
3523 | if(grp) { | |
3524 | /* enable VLAN tag insert/strip */ | |
3525 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3526 | ctrl |= E1000_CTRL_VME; | |
3527 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3528 | ||
3529 | /* enable VLAN receive filtering */ | |
3530 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3531 | rctl |= E1000_RCTL_VFE; | |
3532 | rctl &= ~E1000_RCTL_CFIEN; | |
3533 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 3534 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
3535 | } else { |
3536 | /* disable VLAN tag insert/strip */ | |
3537 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3538 | ctrl &= ~E1000_CTRL_VME; | |
3539 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3540 | ||
3541 | /* disable VLAN filtering */ | |
3542 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3543 | rctl &= ~E1000_RCTL_VFE; | |
3544 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 MC |
3545 | if(adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
3546 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3547 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3548 | } | |
1da177e4 LT |
3549 | } |
3550 | ||
3551 | e1000_irq_enable(adapter); | |
3552 | } | |
3553 | ||
3554 | static void | |
3555 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
3556 | { | |
3557 | struct e1000_adapter *adapter = netdev->priv; | |
3558 | uint32_t vfta, index; | |
2d7edb92 MC |
3559 | if((adapter->hw.mng_cookie.status & |
3560 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
3561 | (vid == adapter->mng_vlan_id)) | |
3562 | return; | |
1da177e4 LT |
3563 | /* add VID to filter table */ |
3564 | index = (vid >> 5) & 0x7F; | |
3565 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
3566 | vfta |= (1 << (vid & 0x1F)); | |
3567 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3568 | } | |
3569 | ||
3570 | static void | |
3571 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
3572 | { | |
3573 | struct e1000_adapter *adapter = netdev->priv; | |
3574 | uint32_t vfta, index; | |
3575 | ||
3576 | e1000_irq_disable(adapter); | |
3577 | ||
3578 | if(adapter->vlgrp) | |
3579 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
3580 | ||
3581 | e1000_irq_enable(adapter); | |
3582 | ||
2d7edb92 MC |
3583 | if((adapter->hw.mng_cookie.status & |
3584 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
3585 | (vid == adapter->mng_vlan_id)) | |
3586 | return; | |
1da177e4 LT |
3587 | /* remove VID from filter table */ |
3588 | index = (vid >> 5) & 0x7F; | |
3589 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
3590 | vfta &= ~(1 << (vid & 0x1F)); | |
3591 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3592 | } | |
3593 | ||
3594 | static void | |
3595 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
3596 | { | |
3597 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
3598 | ||
3599 | if(adapter->vlgrp) { | |
3600 | uint16_t vid; | |
3601 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
3602 | if(!adapter->vlgrp->vlan_devices[vid]) | |
3603 | continue; | |
3604 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
3605 | } | |
3606 | } | |
3607 | } | |
3608 | ||
3609 | int | |
3610 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
3611 | { | |
3612 | adapter->hw.autoneg = 0; | |
3613 | ||
3614 | switch(spddplx) { | |
3615 | case SPEED_10 + DUPLEX_HALF: | |
3616 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
3617 | break; | |
3618 | case SPEED_10 + DUPLEX_FULL: | |
3619 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
3620 | break; | |
3621 | case SPEED_100 + DUPLEX_HALF: | |
3622 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
3623 | break; | |
3624 | case SPEED_100 + DUPLEX_FULL: | |
3625 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
3626 | break; | |
3627 | case SPEED_1000 + DUPLEX_FULL: | |
3628 | adapter->hw.autoneg = 1; | |
3629 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
3630 | break; | |
3631 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
3632 | default: | |
3633 | DPRINTK(PROBE, ERR, | |
3634 | "Unsupported Speed/Duplexity configuration\n"); | |
3635 | return -EINVAL; | |
3636 | } | |
3637 | return 0; | |
3638 | } | |
3639 | ||
3640 | static int | |
3641 | e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p) | |
3642 | { | |
3643 | struct pci_dev *pdev = NULL; | |
3644 | ||
3645 | switch(event) { | |
3646 | case SYS_DOWN: | |
3647 | case SYS_HALT: | |
3648 | case SYS_POWER_OFF: | |
3649 | while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) { | |
3650 | if(pci_dev_driver(pdev) == &e1000_driver) | |
3651 | e1000_suspend(pdev, 3); | |
3652 | } | |
3653 | } | |
3654 | return NOTIFY_DONE; | |
3655 | } | |
3656 | ||
3657 | static int | |
3658 | e1000_suspend(struct pci_dev *pdev, uint32_t state) | |
3659 | { | |
3660 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3661 | struct e1000_adapter *adapter = netdev->priv; | |
2d7edb92 | 3662 | uint32_t ctrl, ctrl_ext, rctl, manc, status, swsm; |
1da177e4 LT |
3663 | uint32_t wufc = adapter->wol; |
3664 | ||
3665 | netif_device_detach(netdev); | |
3666 | ||
3667 | if(netif_running(netdev)) | |
3668 | e1000_down(adapter); | |
3669 | ||
3670 | status = E1000_READ_REG(&adapter->hw, STATUS); | |
3671 | if(status & E1000_STATUS_LU) | |
3672 | wufc &= ~E1000_WUFC_LNKC; | |
3673 | ||
3674 | if(wufc) { | |
3675 | e1000_setup_rctl(adapter); | |
3676 | e1000_set_multi(netdev); | |
3677 | ||
3678 | /* turn on all-multi mode if wake on multicast is enabled */ | |
3679 | if(adapter->wol & E1000_WUFC_MC) { | |
3680 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3681 | rctl |= E1000_RCTL_MPE; | |
3682 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
3683 | } | |
3684 | ||
3685 | if(adapter->hw.mac_type >= e1000_82540) { | |
3686 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3687 | /* advertise wake from D3Cold */ | |
3688 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
3689 | /* phy power management enable */ | |
3690 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
3691 | ctrl |= E1000_CTRL_ADVD3WUC | | |
3692 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
3693 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3694 | } | |
3695 | ||
3696 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
3697 | adapter->hw.media_type == e1000_media_type_internal_serdes) { | |
3698 | /* keep the laser running in D3 */ | |
3699 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
3700 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
3701 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
3702 | } | |
3703 | ||
2d7edb92 MC |
3704 | /* Allow time for pending master requests to run */ |
3705 | e1000_disable_pciex_master(&adapter->hw); | |
3706 | ||
1da177e4 LT |
3707 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
3708 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
3709 | pci_enable_wake(pdev, 3, 1); | |
3710 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3711 | } else { | |
3712 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
3713 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
3714 | pci_enable_wake(pdev, 3, 0); | |
3715 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3716 | } | |
3717 | ||
3718 | pci_save_state(pdev); | |
3719 | ||
3720 | if(adapter->hw.mac_type >= e1000_82540 && | |
3721 | adapter->hw.media_type == e1000_media_type_copper) { | |
3722 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3723 | if(manc & E1000_MANC_SMBUS_EN) { | |
3724 | manc |= E1000_MANC_ARP_EN; | |
3725 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3726 | pci_enable_wake(pdev, 3, 1); | |
3727 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3728 | } | |
3729 | } | |
3730 | ||
2d7edb92 MC |
3731 | switch(adapter->hw.mac_type) { |
3732 | case e1000_82573: | |
3733 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
3734 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
3735 | swsm & ~E1000_SWSM_DRV_LOAD); | |
3736 | break; | |
3737 | default: | |
3738 | break; | |
3739 | } | |
3740 | ||
1da177e4 LT |
3741 | pci_disable_device(pdev); |
3742 | ||
3743 | state = (state > 0) ? 3 : 0; | |
3744 | pci_set_power_state(pdev, state); | |
3745 | ||
3746 | return 0; | |
3747 | } | |
3748 | ||
3749 | #ifdef CONFIG_PM | |
3750 | static int | |
3751 | e1000_resume(struct pci_dev *pdev) | |
3752 | { | |
3753 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3754 | struct e1000_adapter *adapter = netdev->priv; | |
2d7edb92 | 3755 | uint32_t manc, ret, swsm; |
1da177e4 LT |
3756 | |
3757 | pci_set_power_state(pdev, 0); | |
3758 | pci_restore_state(pdev); | |
3759 | ret = pci_enable_device(pdev); | |
a4cb847d | 3760 | pci_set_master(pdev); |
1da177e4 LT |
3761 | |
3762 | pci_enable_wake(pdev, 3, 0); | |
3763 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3764 | ||
3765 | e1000_reset(adapter); | |
3766 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
3767 | ||
3768 | if(netif_running(netdev)) | |
3769 | e1000_up(adapter); | |
3770 | ||
3771 | netif_device_attach(netdev); | |
3772 | ||
3773 | if(adapter->hw.mac_type >= e1000_82540 && | |
3774 | adapter->hw.media_type == e1000_media_type_copper) { | |
3775 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3776 | manc &= ~(E1000_MANC_ARP_EN); | |
3777 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3778 | } | |
3779 | ||
2d7edb92 MC |
3780 | switch(adapter->hw.mac_type) { |
3781 | case e1000_82573: | |
3782 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
3783 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
3784 | swsm | E1000_SWSM_DRV_LOAD); | |
3785 | break; | |
3786 | default: | |
3787 | break; | |
3788 | } | |
3789 | ||
1da177e4 LT |
3790 | return 0; |
3791 | } | |
3792 | #endif | |
1da177e4 LT |
3793 | #ifdef CONFIG_NET_POLL_CONTROLLER |
3794 | /* | |
3795 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3796 | * without having to re-enable interrupts. It's not called while | |
3797 | * the interrupt routine is executing. | |
3798 | */ | |
3799 | static void | |
3800 | e1000_netpoll (struct net_device *netdev) | |
3801 | { | |
3802 | struct e1000_adapter *adapter = netdev->priv; | |
3803 | disable_irq(adapter->pdev->irq); | |
3804 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
3805 | enable_irq(adapter->pdev->irq); | |
3806 | } | |
3807 | #endif | |
3808 | ||
3809 | /* e1000_main.c */ |