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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
2648345f | 4 | Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. |
1da177e4 LT |
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 | |
2b02893e MC |
32 | * 6.0.58 4/20/05 |
33 | * o Accepted ethtool cleanup patch from Stephen Hemminger | |
2648345f MC |
34 | * 6.0.44+ 2/15/05 |
35 | * o applied Anton's patch to resolve tx hang in hardware | |
36 | * o Applied Andrew Mortons patch - e1000 stops working after resume | |
1da177e4 LT |
37 | */ |
38 | ||
39 | char e1000_driver_name[] = "e1000"; | |
3ad2cc67 | 40 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
41 | #ifndef CONFIG_E1000_NAPI |
42 | #define DRIVERNAPI | |
43 | #else | |
44 | #define DRIVERNAPI "-NAPI" | |
45 | #endif | |
4ee9c020 | 46 | #define DRV_VERSION "6.3.9-k2"DRIVERNAPI |
1da177e4 | 47 | char e1000_driver_version[] = DRV_VERSION; |
3ad2cc67 | 48 | static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation."; |
1da177e4 LT |
49 | |
50 | /* e1000_pci_tbl - PCI Device ID Table | |
51 | * | |
52 | * Last entry must be all 0s | |
53 | * | |
54 | * Macro expands to... | |
55 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
56 | */ | |
57 | static struct pci_device_id e1000_pci_tbl[] = { | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 77 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
78 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
79 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
07b8fede MC |
83 | INTEL_E1000_ETHERNET_DEVICE(0x105E), |
84 | INTEL_E1000_ETHERNET_DEVICE(0x105F), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x1060), | |
1da177e4 LT |
86 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
87 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
90 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
91 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
92 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
93 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
07b8fede MC |
94 | INTEL_E1000_ETHERNET_DEVICE(0x107D), |
95 | INTEL_E1000_ETHERNET_DEVICE(0x107E), | |
96 | INTEL_E1000_ETHERNET_DEVICE(0x107F), | |
1da177e4 | 97 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
2648345f MC |
98 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
99 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
b7ee49db | 100 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 101 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
b7ee49db | 102 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
1da177e4 LT |
103 | /* required last entry */ |
104 | {0,} | |
105 | }; | |
106 | ||
107 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
108 | ||
109 | int e1000_up(struct e1000_adapter *adapter); | |
110 | void e1000_down(struct e1000_adapter *adapter); | |
111 | void e1000_reset(struct e1000_adapter *adapter); | |
112 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
581d708e MC |
113 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
114 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
115 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
116 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 AB |
117 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
118 | struct e1000_tx_ring *txdr); | |
119 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, | |
120 | struct e1000_rx_ring *rxdr); | |
121 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, | |
122 | struct e1000_tx_ring *tx_ring); | |
123 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, | |
124 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
125 | void e1000_update_stats(struct e1000_adapter *adapter); |
126 | ||
127 | /* Local Function Prototypes */ | |
128 | ||
129 | static int e1000_init_module(void); | |
130 | static void e1000_exit_module(void); | |
131 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
132 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e MC |
133 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
134 | #ifdef CONFIG_E1000_MQ | |
135 | static void e1000_setup_queue_mapping(struct e1000_adapter *adapter); | |
136 | #endif | |
1da177e4 LT |
137 | static int e1000_sw_init(struct e1000_adapter *adapter); |
138 | static int e1000_open(struct net_device *netdev); | |
139 | static int e1000_close(struct net_device *netdev); | |
140 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
141 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
142 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
143 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
144 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
145 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
146 | struct e1000_tx_ring *tx_ring); | |
147 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
148 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
149 | static void e1000_set_multi(struct net_device *netdev); |
150 | static void e1000_update_phy_info(unsigned long data); | |
151 | static void e1000_watchdog(unsigned long data); | |
152 | static void e1000_watchdog_task(struct e1000_adapter *adapter); | |
153 | static void e1000_82547_tx_fifo_stall(unsigned long data); | |
154 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
155 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
156 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
157 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
158 | static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); | |
581d708e MC |
159 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
160 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 161 | #ifdef CONFIG_E1000_NAPI |
581d708e | 162 | static int e1000_clean(struct net_device *poll_dev, int *budget); |
1da177e4 | 163 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
581d708e | 164 | struct e1000_rx_ring *rx_ring, |
1da177e4 | 165 | int *work_done, int work_to_do); |
2d7edb92 | 166 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
581d708e | 167 | struct e1000_rx_ring *rx_ring, |
2d7edb92 | 168 | int *work_done, int work_to_do); |
1da177e4 | 169 | #else |
581d708e MC |
170 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
171 | struct e1000_rx_ring *rx_ring); | |
172 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
173 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 174 | #endif |
581d708e | 175 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
176 | struct e1000_rx_ring *rx_ring, |
177 | int cleaned_count); | |
581d708e | 178 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
179 | struct e1000_rx_ring *rx_ring, |
180 | int cleaned_count); | |
1da177e4 LT |
181 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
182 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
183 | int cmd); | |
184 | void e1000_set_ethtool_ops(struct net_device *netdev); | |
185 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); | |
186 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
187 | static void e1000_tx_timeout(struct net_device *dev); | |
188 | static void e1000_tx_timeout_task(struct net_device *dev); | |
189 | static void e1000_smartspeed(struct e1000_adapter *adapter); | |
190 | static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, | |
191 | struct sk_buff *skb); | |
192 | ||
193 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
194 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
195 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
196 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
197 | ||
1da177e4 | 198 | #ifdef CONFIG_PM |
977e74b5 | 199 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
200 | static int e1000_resume(struct pci_dev *pdev); |
201 | #endif | |
202 | ||
203 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
204 | /* for netdump / net console */ | |
205 | static void e1000_netpoll (struct net_device *netdev); | |
206 | #endif | |
207 | ||
24025e4e MC |
208 | #ifdef CONFIG_E1000_MQ |
209 | /* for multiple Rx queues */ | |
210 | void e1000_rx_schedule(void *data); | |
211 | #endif | |
212 | ||
1da177e4 LT |
213 | /* Exported from other modules */ |
214 | ||
215 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
216 | ||
217 | static struct pci_driver e1000_driver = { | |
218 | .name = e1000_driver_name, | |
219 | .id_table = e1000_pci_tbl, | |
220 | .probe = e1000_probe, | |
221 | .remove = __devexit_p(e1000_remove), | |
222 | /* Power Managment Hooks */ | |
223 | #ifdef CONFIG_PM | |
224 | .suspend = e1000_suspend, | |
225 | .resume = e1000_resume | |
226 | #endif | |
227 | }; | |
228 | ||
229 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
230 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
231 | MODULE_LICENSE("GPL"); | |
232 | MODULE_VERSION(DRV_VERSION); | |
233 | ||
234 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
235 | module_param(debug, int, 0); | |
236 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
237 | ||
238 | /** | |
239 | * e1000_init_module - Driver Registration Routine | |
240 | * | |
241 | * e1000_init_module is the first routine called when the driver is | |
242 | * loaded. All it does is register with the PCI subsystem. | |
243 | **/ | |
244 | ||
245 | static int __init | |
246 | e1000_init_module(void) | |
247 | { | |
248 | int ret; | |
249 | printk(KERN_INFO "%s - version %s\n", | |
250 | e1000_driver_string, e1000_driver_version); | |
251 | ||
252 | printk(KERN_INFO "%s\n", e1000_copyright); | |
253 | ||
254 | ret = pci_module_init(&e1000_driver); | |
8b378def | 255 | |
1da177e4 LT |
256 | return ret; |
257 | } | |
258 | ||
259 | module_init(e1000_init_module); | |
260 | ||
261 | /** | |
262 | * e1000_exit_module - Driver Exit Cleanup Routine | |
263 | * | |
264 | * e1000_exit_module is called just before the driver is removed | |
265 | * from memory. | |
266 | **/ | |
267 | ||
268 | static void __exit | |
269 | e1000_exit_module(void) | |
270 | { | |
1da177e4 LT |
271 | pci_unregister_driver(&e1000_driver); |
272 | } | |
273 | ||
274 | module_exit(e1000_exit_module); | |
275 | ||
276 | /** | |
277 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
278 | * @adapter: board private structure | |
279 | **/ | |
280 | ||
281 | static inline void | |
282 | e1000_irq_disable(struct e1000_adapter *adapter) | |
283 | { | |
284 | atomic_inc(&adapter->irq_sem); | |
285 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
286 | E1000_WRITE_FLUSH(&adapter->hw); | |
287 | synchronize_irq(adapter->pdev->irq); | |
288 | } | |
289 | ||
290 | /** | |
291 | * e1000_irq_enable - Enable default interrupt generation settings | |
292 | * @adapter: board private structure | |
293 | **/ | |
294 | ||
295 | static inline void | |
296 | e1000_irq_enable(struct e1000_adapter *adapter) | |
297 | { | |
298 | if(likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
299 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); | |
300 | E1000_WRITE_FLUSH(&adapter->hw); | |
301 | } | |
302 | } | |
3ad2cc67 AB |
303 | |
304 | static void | |
2d7edb92 MC |
305 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
306 | { | |
307 | struct net_device *netdev = adapter->netdev; | |
308 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
309 | uint16_t old_vid = adapter->mng_vlan_id; | |
310 | if(adapter->vlgrp) { | |
311 | if(!adapter->vlgrp->vlan_devices[vid]) { | |
312 | if(adapter->hw.mng_cookie.status & | |
313 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
314 | e1000_vlan_rx_add_vid(netdev, vid); | |
315 | adapter->mng_vlan_id = vid; | |
316 | } else | |
317 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
318 | ||
319 | if((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
320 | (vid != old_vid) && | |
321 | !adapter->vlgrp->vlan_devices[old_vid]) | |
322 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
323 | } | |
324 | } | |
325 | } | |
b55ccb35 JK |
326 | |
327 | /** | |
328 | * e1000_release_hw_control - release control of the h/w to f/w | |
329 | * @adapter: address of board private structure | |
330 | * | |
331 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
332 | * For ASF and Pass Through versions of f/w this means that the | |
333 | * driver is no longer loaded. For AMT version (only with 82573) i | |
334 | * of the f/w this means that the netowrk i/f is closed. | |
335 | * | |
336 | **/ | |
337 | ||
338 | static inline void | |
339 | e1000_release_hw_control(struct e1000_adapter *adapter) | |
340 | { | |
341 | uint32_t ctrl_ext; | |
342 | uint32_t swsm; | |
343 | ||
344 | /* Let firmware taken over control of h/w */ | |
345 | switch (adapter->hw.mac_type) { | |
346 | case e1000_82571: | |
347 | case e1000_82572: | |
348 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
349 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
350 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
351 | break; | |
352 | case e1000_82573: | |
353 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
354 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
355 | swsm & ~E1000_SWSM_DRV_LOAD); | |
356 | default: | |
357 | break; | |
358 | } | |
359 | } | |
360 | ||
361 | /** | |
362 | * e1000_get_hw_control - get control of the h/w from f/w | |
363 | * @adapter: address of board private structure | |
364 | * | |
365 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
366 | * For ASF and Pass Through versions of f/w this means that | |
367 | * the driver is loaded. For AMT version (only with 82573) | |
368 | * of the f/w this means that the netowrk i/f is open. | |
369 | * | |
370 | **/ | |
371 | ||
372 | static inline void | |
373 | e1000_get_hw_control(struct e1000_adapter *adapter) | |
374 | { | |
375 | uint32_t ctrl_ext; | |
376 | uint32_t swsm; | |
377 | /* Let firmware know the driver has taken over */ | |
378 | switch (adapter->hw.mac_type) { | |
379 | case e1000_82571: | |
380 | case e1000_82572: | |
381 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
382 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
383 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
384 | break; | |
385 | case e1000_82573: | |
386 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
387 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
388 | swsm | E1000_SWSM_DRV_LOAD); | |
389 | break; | |
390 | default: | |
391 | break; | |
392 | } | |
393 | } | |
394 | ||
1da177e4 LT |
395 | int |
396 | e1000_up(struct e1000_adapter *adapter) | |
397 | { | |
398 | struct net_device *netdev = adapter->netdev; | |
581d708e | 399 | int i, err; |
1da177e4 LT |
400 | |
401 | /* hardware has been reset, we need to reload some things */ | |
402 | ||
403 | /* Reset the PHY if it was previously powered down */ | |
404 | if(adapter->hw.media_type == e1000_media_type_copper) { | |
405 | uint16_t mii_reg; | |
406 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
407 | if(mii_reg & MII_CR_POWER_DOWN) | |
408 | e1000_phy_reset(&adapter->hw); | |
409 | } | |
410 | ||
411 | e1000_set_multi(netdev); | |
412 | ||
413 | e1000_restore_vlan(adapter); | |
414 | ||
415 | e1000_configure_tx(adapter); | |
416 | e1000_setup_rctl(adapter); | |
417 | e1000_configure_rx(adapter); | |
72d64a43 JK |
418 | /* call E1000_DESC_UNUSED which always leaves |
419 | * at least 1 descriptor unused to make sure | |
420 | * next_to_use != next_to_clean */ | |
f56799ea | 421 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 422 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
423 | adapter->alloc_rx_buf(adapter, ring, |
424 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 425 | } |
1da177e4 | 426 | |
fa4f7ef3 MC |
427 | #ifdef CONFIG_PCI_MSI |
428 | if(adapter->hw.mac_type > e1000_82547_rev_2) { | |
429 | adapter->have_msi = TRUE; | |
430 | if((err = pci_enable_msi(adapter->pdev))) { | |
431 | DPRINTK(PROBE, ERR, | |
432 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
433 | adapter->have_msi = FALSE; | |
434 | } | |
435 | } | |
436 | #endif | |
1da177e4 LT |
437 | if((err = request_irq(adapter->pdev->irq, &e1000_intr, |
438 | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
2648345f MC |
439 | netdev->name, netdev))) { |
440 | DPRINTK(PROBE, ERR, | |
441 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 442 | return err; |
2648345f | 443 | } |
1da177e4 | 444 | |
7bfa4816 JK |
445 | #ifdef CONFIG_E1000_MQ |
446 | e1000_setup_queue_mapping(adapter); | |
447 | #endif | |
448 | ||
449 | adapter->tx_queue_len = netdev->tx_queue_len; | |
450 | ||
1da177e4 | 451 | mod_timer(&adapter->watchdog_timer, jiffies); |
1da177e4 LT |
452 | |
453 | #ifdef CONFIG_E1000_NAPI | |
454 | netif_poll_enable(netdev); | |
455 | #endif | |
5de55624 MC |
456 | e1000_irq_enable(adapter); |
457 | ||
1da177e4 LT |
458 | return 0; |
459 | } | |
460 | ||
461 | void | |
462 | e1000_down(struct e1000_adapter *adapter) | |
463 | { | |
464 | struct net_device *netdev = adapter->netdev; | |
57128197 JK |
465 | boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) && |
466 | e1000_check_mng_mode(&adapter->hw); | |
1da177e4 LT |
467 | |
468 | e1000_irq_disable(adapter); | |
24025e4e MC |
469 | #ifdef CONFIG_E1000_MQ |
470 | while (atomic_read(&adapter->rx_sched_call_data.count) != 0); | |
471 | #endif | |
1da177e4 | 472 | free_irq(adapter->pdev->irq, netdev); |
fa4f7ef3 MC |
473 | #ifdef CONFIG_PCI_MSI |
474 | if(adapter->hw.mac_type > e1000_82547_rev_2 && | |
475 | adapter->have_msi == TRUE) | |
476 | pci_disable_msi(adapter->pdev); | |
477 | #endif | |
1da177e4 LT |
478 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
479 | del_timer_sync(&adapter->watchdog_timer); | |
480 | del_timer_sync(&adapter->phy_info_timer); | |
481 | ||
482 | #ifdef CONFIG_E1000_NAPI | |
483 | netif_poll_disable(netdev); | |
484 | #endif | |
7bfa4816 | 485 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
486 | adapter->link_speed = 0; |
487 | adapter->link_duplex = 0; | |
488 | netif_carrier_off(netdev); | |
489 | netif_stop_queue(netdev); | |
490 | ||
491 | e1000_reset(adapter); | |
581d708e MC |
492 | e1000_clean_all_tx_rings(adapter); |
493 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 494 | |
57128197 JK |
495 | /* Power down the PHY so no link is implied when interface is down * |
496 | * The PHY cannot be powered down if any of the following is TRUE * | |
497 | * (a) WoL is enabled | |
498 | * (b) AMT is active | |
499 | * (c) SoL/IDER session is active */ | |
500 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
2d7edb92 | 501 | adapter->hw.media_type == e1000_media_type_copper && |
57128197 JK |
502 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) && |
503 | !mng_mode_enabled && | |
504 | !e1000_check_phy_reset_block(&adapter->hw)) { | |
1da177e4 LT |
505 | uint16_t mii_reg; |
506 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
507 | mii_reg |= MII_CR_POWER_DOWN; | |
508 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 509 | mdelay(1); |
1da177e4 LT |
510 | } |
511 | } | |
512 | ||
513 | void | |
514 | e1000_reset(struct e1000_adapter *adapter) | |
515 | { | |
2d7edb92 | 516 | uint32_t pba, manc; |
1125ecbc | 517 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
1da177e4 LT |
518 | |
519 | /* Repartition Pba for greater than 9k mtu | |
520 | * To take effect CTRL.RST is required. | |
521 | */ | |
522 | ||
2d7edb92 MC |
523 | switch (adapter->hw.mac_type) { |
524 | case e1000_82547: | |
0e6ef3e0 | 525 | case e1000_82547_rev_2: |
2d7edb92 MC |
526 | pba = E1000_PBA_30K; |
527 | break; | |
868d5309 MC |
528 | case e1000_82571: |
529 | case e1000_82572: | |
530 | pba = E1000_PBA_38K; | |
531 | break; | |
2d7edb92 MC |
532 | case e1000_82573: |
533 | pba = E1000_PBA_12K; | |
534 | break; | |
535 | default: | |
536 | pba = E1000_PBA_48K; | |
537 | break; | |
538 | } | |
539 | ||
1125ecbc | 540 | if((adapter->hw.mac_type != e1000_82573) && |
f11b7f85 | 541 | (adapter->netdev->mtu > E1000_RXBUFFER_8192)) |
1125ecbc | 542 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 MC |
543 | |
544 | ||
545 | if(adapter->hw.mac_type == e1000_82547) { | |
1da177e4 LT |
546 | adapter->tx_fifo_head = 0; |
547 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
548 | adapter->tx_fifo_size = | |
549 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
550 | atomic_set(&adapter->tx_fifo_stall, 0); | |
551 | } | |
2d7edb92 | 552 | |
1da177e4 LT |
553 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
554 | ||
555 | /* flow control settings */ | |
f11b7f85 JK |
556 | /* Set the FC high water mark to 90% of the FIFO size. |
557 | * Required to clear last 3 LSB */ | |
558 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
559 | ||
560 | adapter->hw.fc_high_water = fc_high_water_mark; | |
561 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
1da177e4 LT |
562 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; |
563 | adapter->hw.fc_send_xon = 1; | |
564 | adapter->hw.fc = adapter->hw.original_fc; | |
565 | ||
2d7edb92 | 566 | /* Allow time for pending master requests to run */ |
1da177e4 LT |
567 | e1000_reset_hw(&adapter->hw); |
568 | if(adapter->hw.mac_type >= e1000_82544) | |
569 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
570 | if(e1000_init_hw(&adapter->hw)) | |
571 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
2d7edb92 | 572 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
573 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
574 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
575 | ||
576 | e1000_reset_adaptive(&adapter->hw); | |
577 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2d7edb92 MC |
578 | if (adapter->en_mng_pt) { |
579 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
580 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
581 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
582 | } | |
1da177e4 LT |
583 | } |
584 | ||
585 | /** | |
586 | * e1000_probe - Device Initialization Routine | |
587 | * @pdev: PCI device information struct | |
588 | * @ent: entry in e1000_pci_tbl | |
589 | * | |
590 | * Returns 0 on success, negative on failure | |
591 | * | |
592 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
593 | * The OS initialization, configuring of the adapter private structure, | |
594 | * and a hardware reset occur. | |
595 | **/ | |
596 | ||
597 | static int __devinit | |
598 | e1000_probe(struct pci_dev *pdev, | |
599 | const struct pci_device_id *ent) | |
600 | { | |
601 | struct net_device *netdev; | |
602 | struct e1000_adapter *adapter; | |
2d7edb92 | 603 | unsigned long mmio_start, mmio_len; |
2d7edb92 | 604 | |
1da177e4 | 605 | static int cards_found = 0; |
2d7edb92 | 606 | int i, err, pci_using_dac; |
1da177e4 LT |
607 | uint16_t eeprom_data; |
608 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
1da177e4 LT |
609 | if((err = pci_enable_device(pdev))) |
610 | return err; | |
611 | ||
612 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { | |
613 | pci_using_dac = 1; | |
614 | } else { | |
615 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { | |
616 | E1000_ERR("No usable DMA configuration, aborting\n"); | |
617 | return err; | |
618 | } | |
619 | pci_using_dac = 0; | |
620 | } | |
621 | ||
622 | if((err = pci_request_regions(pdev, e1000_driver_name))) | |
623 | return err; | |
624 | ||
625 | pci_set_master(pdev); | |
626 | ||
627 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
628 | if(!netdev) { | |
629 | err = -ENOMEM; | |
630 | goto err_alloc_etherdev; | |
631 | } | |
632 | ||
633 | SET_MODULE_OWNER(netdev); | |
634 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
635 | ||
636 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 637 | adapter = netdev_priv(netdev); |
1da177e4 LT |
638 | adapter->netdev = netdev; |
639 | adapter->pdev = pdev; | |
640 | adapter->hw.back = adapter; | |
641 | adapter->msg_enable = (1 << debug) - 1; | |
642 | ||
643 | mmio_start = pci_resource_start(pdev, BAR_0); | |
644 | mmio_len = pci_resource_len(pdev, BAR_0); | |
645 | ||
646 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
647 | if(!adapter->hw.hw_addr) { | |
648 | err = -EIO; | |
649 | goto err_ioremap; | |
650 | } | |
651 | ||
652 | for(i = BAR_1; i <= BAR_5; i++) { | |
653 | if(pci_resource_len(pdev, i) == 0) | |
654 | continue; | |
655 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
656 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
657 | break; | |
658 | } | |
659 | } | |
660 | ||
661 | netdev->open = &e1000_open; | |
662 | netdev->stop = &e1000_close; | |
663 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
664 | netdev->get_stats = &e1000_get_stats; | |
665 | netdev->set_multicast_list = &e1000_set_multi; | |
666 | netdev->set_mac_address = &e1000_set_mac; | |
667 | netdev->change_mtu = &e1000_change_mtu; | |
668 | netdev->do_ioctl = &e1000_ioctl; | |
669 | e1000_set_ethtool_ops(netdev); | |
670 | netdev->tx_timeout = &e1000_tx_timeout; | |
671 | netdev->watchdog_timeo = 5 * HZ; | |
672 | #ifdef CONFIG_E1000_NAPI | |
673 | netdev->poll = &e1000_clean; | |
674 | netdev->weight = 64; | |
675 | #endif | |
676 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
677 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
678 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
679 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
680 | netdev->poll_controller = e1000_netpoll; | |
681 | #endif | |
682 | strcpy(netdev->name, pci_name(pdev)); | |
683 | ||
684 | netdev->mem_start = mmio_start; | |
685 | netdev->mem_end = mmio_start + mmio_len; | |
686 | netdev->base_addr = adapter->hw.io_base; | |
687 | ||
688 | adapter->bd_number = cards_found; | |
689 | ||
690 | /* setup the private structure */ | |
691 | ||
692 | if((err = e1000_sw_init(adapter))) | |
693 | goto err_sw_init; | |
694 | ||
2d7edb92 MC |
695 | if((err = e1000_check_phy_reset_block(&adapter->hw))) |
696 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); | |
697 | ||
1da177e4 LT |
698 | if(adapter->hw.mac_type >= e1000_82543) { |
699 | netdev->features = NETIF_F_SG | | |
700 | NETIF_F_HW_CSUM | | |
701 | NETIF_F_HW_VLAN_TX | | |
702 | NETIF_F_HW_VLAN_RX | | |
703 | NETIF_F_HW_VLAN_FILTER; | |
704 | } | |
705 | ||
706 | #ifdef NETIF_F_TSO | |
707 | if((adapter->hw.mac_type >= e1000_82544) && | |
708 | (adapter->hw.mac_type != e1000_82547)) | |
709 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
710 | |
711 | #ifdef NETIF_F_TSO_IPV6 | |
712 | if(adapter->hw.mac_type > e1000_82547_rev_2) | |
713 | netdev->features |= NETIF_F_TSO_IPV6; | |
714 | #endif | |
1da177e4 LT |
715 | #endif |
716 | if(pci_using_dac) | |
717 | netdev->features |= NETIF_F_HIGHDMA; | |
718 | ||
719 | /* hard_start_xmit is safe against parallel locking */ | |
720 | netdev->features |= NETIF_F_LLTX; | |
721 | ||
2d7edb92 MC |
722 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
723 | ||
1da177e4 LT |
724 | /* before reading the EEPROM, reset the controller to |
725 | * put the device in a known good starting state */ | |
726 | ||
727 | e1000_reset_hw(&adapter->hw); | |
728 | ||
729 | /* make sure the EEPROM is good */ | |
730 | ||
731 | if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) { | |
732 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); | |
733 | err = -EIO; | |
734 | goto err_eeprom; | |
735 | } | |
736 | ||
737 | /* copy the MAC address out of the EEPROM */ | |
738 | ||
2648345f | 739 | if(e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
740 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
741 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 742 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 743 | |
9beb0ac1 | 744 | if(!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 LT |
745 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
746 | err = -EIO; | |
747 | goto err_eeprom; | |
748 | } | |
749 | ||
750 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
751 | ||
752 | e1000_get_bus_info(&adapter->hw); | |
753 | ||
754 | init_timer(&adapter->tx_fifo_stall_timer); | |
755 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
756 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
757 | ||
758 | init_timer(&adapter->watchdog_timer); | |
759 | adapter->watchdog_timer.function = &e1000_watchdog; | |
760 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
761 | ||
762 | INIT_WORK(&adapter->watchdog_task, | |
763 | (void (*)(void *))e1000_watchdog_task, adapter); | |
764 | ||
765 | init_timer(&adapter->phy_info_timer); | |
766 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
767 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
768 | ||
769 | INIT_WORK(&adapter->tx_timeout_task, | |
770 | (void (*)(void *))e1000_tx_timeout_task, netdev); | |
771 | ||
772 | /* we're going to reset, so assume we have no link for now */ | |
773 | ||
774 | netif_carrier_off(netdev); | |
775 | netif_stop_queue(netdev); | |
776 | ||
777 | e1000_check_options(adapter); | |
778 | ||
779 | /* Initial Wake on LAN setting | |
780 | * If APM wake is enabled in the EEPROM, | |
781 | * enable the ACPI Magic Packet filter | |
782 | */ | |
783 | ||
784 | switch(adapter->hw.mac_type) { | |
785 | case e1000_82542_rev2_0: | |
786 | case e1000_82542_rev2_1: | |
787 | case e1000_82543: | |
788 | break; | |
789 | case e1000_82544: | |
790 | e1000_read_eeprom(&adapter->hw, | |
791 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
792 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
793 | break; | |
794 | case e1000_82546: | |
795 | case e1000_82546_rev_3: | |
fd803241 | 796 | case e1000_82571: |
b7ee49db | 797 | if(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
798 | e1000_read_eeprom(&adapter->hw, |
799 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
800 | break; | |
801 | } | |
802 | /* Fall Through */ | |
803 | default: | |
804 | e1000_read_eeprom(&adapter->hw, | |
805 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
806 | break; | |
807 | } | |
808 | if(eeprom_data & eeprom_apme_mask) | |
809 | adapter->wol |= E1000_WUFC_MAG; | |
810 | ||
fb3d47d4 JK |
811 | /* print bus type/speed/width info */ |
812 | { | |
813 | struct e1000_hw *hw = &adapter->hw; | |
814 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
815 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
816 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
817 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
818 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
819 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
820 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
821 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
822 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
823 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
824 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
825 | "32-bit")); | |
826 | } | |
827 | ||
828 | for (i = 0; i < 6; i++) | |
829 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
830 | ||
1da177e4 LT |
831 | /* reset the hardware with the new settings */ |
832 | e1000_reset(adapter); | |
833 | ||
b55ccb35 JK |
834 | /* If the controller is 82573 and f/w is AMT, do not set |
835 | * DRV_LOAD until the interface is up. For all other cases, | |
836 | * let the f/w know that the h/w is now under the control | |
837 | * of the driver. */ | |
838 | if (adapter->hw.mac_type != e1000_82573 || | |
839 | !e1000_check_mng_mode(&adapter->hw)) | |
840 | e1000_get_hw_control(adapter); | |
2d7edb92 | 841 | |
1da177e4 LT |
842 | strcpy(netdev->name, "eth%d"); |
843 | if((err = register_netdev(netdev))) | |
844 | goto err_register; | |
845 | ||
846 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
847 | ||
848 | cards_found++; | |
849 | return 0; | |
850 | ||
851 | err_register: | |
852 | err_sw_init: | |
853 | err_eeprom: | |
854 | iounmap(adapter->hw.hw_addr); | |
855 | err_ioremap: | |
856 | free_netdev(netdev); | |
857 | err_alloc_etherdev: | |
858 | pci_release_regions(pdev); | |
859 | return err; | |
860 | } | |
861 | ||
862 | /** | |
863 | * e1000_remove - Device Removal Routine | |
864 | * @pdev: PCI device information struct | |
865 | * | |
866 | * e1000_remove is called by the PCI subsystem to alert the driver | |
867 | * that it should release a PCI device. The could be caused by a | |
868 | * Hot-Plug event, or because the driver is going to be removed from | |
869 | * memory. | |
870 | **/ | |
871 | ||
872 | static void __devexit | |
873 | e1000_remove(struct pci_dev *pdev) | |
874 | { | |
875 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 876 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 877 | uint32_t manc; |
581d708e MC |
878 | #ifdef CONFIG_E1000_NAPI |
879 | int i; | |
880 | #endif | |
1da177e4 | 881 | |
be2b28ed JG |
882 | flush_scheduled_work(); |
883 | ||
1da177e4 LT |
884 | if(adapter->hw.mac_type >= e1000_82540 && |
885 | adapter->hw.media_type == e1000_media_type_copper) { | |
886 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
887 | if(manc & E1000_MANC_SMBUS_EN) { | |
888 | manc |= E1000_MANC_ARP_EN; | |
889 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
890 | } | |
891 | } | |
892 | ||
b55ccb35 JK |
893 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
894 | * would have already happened in close and is redundant. */ | |
895 | e1000_release_hw_control(adapter); | |
2d7edb92 | 896 | |
1da177e4 | 897 | unregister_netdev(netdev); |
581d708e | 898 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 899 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
900 | __dev_put(&adapter->polling_netdev[i]); |
901 | #endif | |
1da177e4 | 902 | |
2d7edb92 MC |
903 | if(!e1000_check_phy_reset_block(&adapter->hw)) |
904 | e1000_phy_hw_reset(&adapter->hw); | |
1da177e4 | 905 | |
24025e4e MC |
906 | kfree(adapter->tx_ring); |
907 | kfree(adapter->rx_ring); | |
908 | #ifdef CONFIG_E1000_NAPI | |
909 | kfree(adapter->polling_netdev); | |
910 | #endif | |
911 | ||
1da177e4 LT |
912 | iounmap(adapter->hw.hw_addr); |
913 | pci_release_regions(pdev); | |
914 | ||
24025e4e MC |
915 | #ifdef CONFIG_E1000_MQ |
916 | free_percpu(adapter->cpu_netdev); | |
917 | free_percpu(adapter->cpu_tx_ring); | |
918 | #endif | |
1da177e4 LT |
919 | free_netdev(netdev); |
920 | ||
921 | pci_disable_device(pdev); | |
922 | } | |
923 | ||
924 | /** | |
925 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
926 | * @adapter: board private structure to initialize | |
927 | * | |
928 | * e1000_sw_init initializes the Adapter private data structure. | |
929 | * Fields are initialized based on PCI device information and | |
930 | * OS network device settings (MTU size). | |
931 | **/ | |
932 | ||
933 | static int __devinit | |
934 | e1000_sw_init(struct e1000_adapter *adapter) | |
935 | { | |
936 | struct e1000_hw *hw = &adapter->hw; | |
937 | struct net_device *netdev = adapter->netdev; | |
938 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
939 | #ifdef CONFIG_E1000_NAPI |
940 | int i; | |
941 | #endif | |
1da177e4 LT |
942 | |
943 | /* PCI config space info */ | |
944 | ||
945 | hw->vendor_id = pdev->vendor; | |
946 | hw->device_id = pdev->device; | |
947 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
948 | hw->subsystem_id = pdev->subsystem_device; | |
949 | ||
950 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
951 | ||
952 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
953 | ||
954 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2d7edb92 | 955 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_256; |
1da177e4 LT |
956 | hw->max_frame_size = netdev->mtu + |
957 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
958 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
959 | ||
960 | /* identify the MAC */ | |
961 | ||
962 | if(e1000_set_mac_type(hw)) { | |
963 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); | |
964 | return -EIO; | |
965 | } | |
966 | ||
967 | /* initialize eeprom parameters */ | |
968 | ||
2d7edb92 MC |
969 | if(e1000_init_eeprom_params(hw)) { |
970 | E1000_ERR("EEPROM initialization failed\n"); | |
971 | return -EIO; | |
972 | } | |
1da177e4 LT |
973 | |
974 | switch(hw->mac_type) { | |
975 | default: | |
976 | break; | |
977 | case e1000_82541: | |
978 | case e1000_82547: | |
979 | case e1000_82541_rev_2: | |
980 | case e1000_82547_rev_2: | |
981 | hw->phy_init_script = 1; | |
982 | break; | |
983 | } | |
984 | ||
985 | e1000_set_media_type(hw); | |
986 | ||
987 | hw->wait_autoneg_complete = FALSE; | |
988 | hw->tbi_compatibility_en = TRUE; | |
989 | hw->adaptive_ifs = TRUE; | |
990 | ||
991 | /* Copper options */ | |
992 | ||
993 | if(hw->media_type == e1000_media_type_copper) { | |
994 | hw->mdix = AUTO_ALL_MODES; | |
995 | hw->disable_polarity_correction = FALSE; | |
996 | hw->master_slave = E1000_MASTER_SLAVE; | |
997 | } | |
998 | ||
24025e4e MC |
999 | #ifdef CONFIG_E1000_MQ |
1000 | /* Number of supported queues */ | |
1001 | switch (hw->mac_type) { | |
1002 | case e1000_82571: | |
1003 | case e1000_82572: | |
f56799ea JK |
1004 | /* These controllers support 2 tx queues, but with a single |
1005 | * qdisc implementation, multiple tx queues aren't quite as | |
1006 | * interesting. If we can find a logical way of mapping | |
1007 | * flows to a queue, then perhaps we can up the num_tx_queue | |
1008 | * count back to its default. Until then, we run the risk of | |
1009 | * terrible performance due to SACK overload. */ | |
1010 | adapter->num_tx_queues = 1; | |
1011 | adapter->num_rx_queues = 2; | |
24025e4e MC |
1012 | break; |
1013 | default: | |
f56799ea JK |
1014 | adapter->num_tx_queues = 1; |
1015 | adapter->num_rx_queues = 1; | |
24025e4e MC |
1016 | break; |
1017 | } | |
f56799ea JK |
1018 | adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus()); |
1019 | adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus()); | |
7bfa4816 JK |
1020 | DPRINTK(DRV, INFO, "Multiqueue Enabled: Rx Queue count = %u %s\n", |
1021 | adapter->num_rx_queues, | |
1022 | ((adapter->num_rx_queues == 1) | |
1023 | ? ((num_online_cpus() > 1) | |
1024 | ? "(due to unsupported feature in current adapter)" | |
1025 | : "(due to unsupported system configuration)") | |
1026 | : "")); | |
1027 | DPRINTK(DRV, INFO, "Multiqueue Enabled: Tx Queue count = %u\n", | |
1028 | adapter->num_tx_queues); | |
24025e4e | 1029 | #else |
f56799ea JK |
1030 | adapter->num_tx_queues = 1; |
1031 | adapter->num_rx_queues = 1; | |
24025e4e | 1032 | #endif |
581d708e MC |
1033 | |
1034 | if (e1000_alloc_queues(adapter)) { | |
1035 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1036 | return -ENOMEM; | |
1037 | } | |
1038 | ||
1039 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1040 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1041 | adapter->polling_netdev[i].priv = adapter; |
1042 | adapter->polling_netdev[i].poll = &e1000_clean; | |
1043 | adapter->polling_netdev[i].weight = 64; | |
1044 | dev_hold(&adapter->polling_netdev[i]); | |
1045 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1046 | } | |
7bfa4816 | 1047 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1048 | #endif |
1049 | ||
1da177e4 LT |
1050 | atomic_set(&adapter->irq_sem, 1); |
1051 | spin_lock_init(&adapter->stats_lock); | |
1da177e4 LT |
1052 | |
1053 | return 0; | |
1054 | } | |
1055 | ||
581d708e MC |
1056 | /** |
1057 | * e1000_alloc_queues - Allocate memory for all rings | |
1058 | * @adapter: board private structure to initialize | |
1059 | * | |
1060 | * We allocate one ring per queue at run-time since we don't know the | |
1061 | * number of queues at compile-time. The polling_netdev array is | |
1062 | * intended for Multiqueue, but should work fine with a single queue. | |
1063 | **/ | |
1064 | ||
1065 | static int __devinit | |
1066 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1067 | { | |
1068 | int size; | |
1069 | ||
f56799ea | 1070 | size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; |
581d708e MC |
1071 | adapter->tx_ring = kmalloc(size, GFP_KERNEL); |
1072 | if (!adapter->tx_ring) | |
1073 | return -ENOMEM; | |
1074 | memset(adapter->tx_ring, 0, size); | |
1075 | ||
f56799ea | 1076 | size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; |
581d708e MC |
1077 | adapter->rx_ring = kmalloc(size, GFP_KERNEL); |
1078 | if (!adapter->rx_ring) { | |
1079 | kfree(adapter->tx_ring); | |
1080 | return -ENOMEM; | |
1081 | } | |
1082 | memset(adapter->rx_ring, 0, size); | |
1083 | ||
1084 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1085 | size = sizeof(struct net_device) * adapter->num_rx_queues; |
581d708e MC |
1086 | adapter->polling_netdev = kmalloc(size, GFP_KERNEL); |
1087 | if (!adapter->polling_netdev) { | |
1088 | kfree(adapter->tx_ring); | |
1089 | kfree(adapter->rx_ring); | |
1090 | return -ENOMEM; | |
1091 | } | |
1092 | memset(adapter->polling_netdev, 0, size); | |
1093 | #endif | |
1094 | ||
7bfa4816 JK |
1095 | #ifdef CONFIG_E1000_MQ |
1096 | adapter->rx_sched_call_data.func = e1000_rx_schedule; | |
1097 | adapter->rx_sched_call_data.info = adapter->netdev; | |
1098 | ||
1099 | adapter->cpu_netdev = alloc_percpu(struct net_device *); | |
1100 | adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); | |
1101 | #endif | |
1102 | ||
581d708e MC |
1103 | return E1000_SUCCESS; |
1104 | } | |
1105 | ||
24025e4e MC |
1106 | #ifdef CONFIG_E1000_MQ |
1107 | static void __devinit | |
1108 | e1000_setup_queue_mapping(struct e1000_adapter *adapter) | |
1109 | { | |
1110 | int i, cpu; | |
1111 | ||
1112 | adapter->rx_sched_call_data.func = e1000_rx_schedule; | |
1113 | adapter->rx_sched_call_data.info = adapter->netdev; | |
1114 | cpus_clear(adapter->rx_sched_call_data.cpumask); | |
1115 | ||
1116 | adapter->cpu_netdev = alloc_percpu(struct net_device *); | |
1117 | adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); | |
1118 | ||
1119 | lock_cpu_hotplug(); | |
1120 | i = 0; | |
1121 | for_each_online_cpu(cpu) { | |
f56799ea | 1122 | *per_cpu_ptr(adapter->cpu_tx_ring, cpu) = &adapter->tx_ring[i % adapter->num_tx_queues]; |
24025e4e MC |
1123 | /* This is incomplete because we'd like to assign separate |
1124 | * physical cpus to these netdev polling structures and | |
1125 | * avoid saturating a subset of cpus. | |
1126 | */ | |
f56799ea | 1127 | if (i < adapter->num_rx_queues) { |
24025e4e | 1128 | *per_cpu_ptr(adapter->cpu_netdev, cpu) = &adapter->polling_netdev[i]; |
7bfa4816 JK |
1129 | adapter->rx_ring[i].cpu = cpu; |
1130 | cpu_set(cpu, adapter->cpumask); | |
24025e4e MC |
1131 | } else |
1132 | *per_cpu_ptr(adapter->cpu_netdev, cpu) = NULL; | |
1133 | ||
1134 | i++; | |
1135 | } | |
1136 | unlock_cpu_hotplug(); | |
1137 | } | |
1138 | #endif | |
1139 | ||
1da177e4 LT |
1140 | /** |
1141 | * e1000_open - Called when a network interface is made active | |
1142 | * @netdev: network interface device structure | |
1143 | * | |
1144 | * Returns 0 on success, negative value on failure | |
1145 | * | |
1146 | * The open entry point is called when a network interface is made | |
1147 | * active by the system (IFF_UP). At this point all resources needed | |
1148 | * for transmit and receive operations are allocated, the interrupt | |
1149 | * handler is registered with the OS, the watchdog timer is started, | |
1150 | * and the stack is notified that the interface is ready. | |
1151 | **/ | |
1152 | ||
1153 | static int | |
1154 | e1000_open(struct net_device *netdev) | |
1155 | { | |
60490fe0 | 1156 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1157 | int err; |
1158 | ||
1159 | /* allocate transmit descriptors */ | |
1160 | ||
581d708e | 1161 | if ((err = e1000_setup_all_tx_resources(adapter))) |
1da177e4 LT |
1162 | goto err_setup_tx; |
1163 | ||
1164 | /* allocate receive descriptors */ | |
1165 | ||
581d708e | 1166 | if ((err = e1000_setup_all_rx_resources(adapter))) |
1da177e4 LT |
1167 | goto err_setup_rx; |
1168 | ||
1169 | if((err = e1000_up(adapter))) | |
1170 | goto err_up; | |
2d7edb92 MC |
1171 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1172 | if((adapter->hw.mng_cookie.status & | |
1173 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
1174 | e1000_update_mng_vlan(adapter); | |
1175 | } | |
1da177e4 | 1176 | |
b55ccb35 JK |
1177 | /* If AMT is enabled, let the firmware know that the network |
1178 | * interface is now open */ | |
1179 | if (adapter->hw.mac_type == e1000_82573 && | |
1180 | e1000_check_mng_mode(&adapter->hw)) | |
1181 | e1000_get_hw_control(adapter); | |
1182 | ||
1da177e4 LT |
1183 | return E1000_SUCCESS; |
1184 | ||
1185 | err_up: | |
581d708e | 1186 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1187 | err_setup_rx: |
581d708e | 1188 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1189 | err_setup_tx: |
1190 | e1000_reset(adapter); | |
1191 | ||
1192 | return err; | |
1193 | } | |
1194 | ||
1195 | /** | |
1196 | * e1000_close - Disables a network interface | |
1197 | * @netdev: network interface device structure | |
1198 | * | |
1199 | * Returns 0, this is not allowed to fail | |
1200 | * | |
1201 | * The close entry point is called when an interface is de-activated | |
1202 | * by the OS. The hardware is still under the drivers control, but | |
1203 | * needs to be disabled. A global MAC reset is issued to stop the | |
1204 | * hardware, and all transmit and receive resources are freed. | |
1205 | **/ | |
1206 | ||
1207 | static int | |
1208 | e1000_close(struct net_device *netdev) | |
1209 | { | |
60490fe0 | 1210 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1211 | |
1212 | e1000_down(adapter); | |
1213 | ||
581d708e MC |
1214 | e1000_free_all_tx_resources(adapter); |
1215 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1216 | |
2d7edb92 MC |
1217 | if((adapter->hw.mng_cookie.status & |
1218 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
1219 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1220 | } | |
b55ccb35 JK |
1221 | |
1222 | /* If AMT is enabled, let the firmware know that the network | |
1223 | * interface is now closed */ | |
1224 | if (adapter->hw.mac_type == e1000_82573 && | |
1225 | e1000_check_mng_mode(&adapter->hw)) | |
1226 | e1000_release_hw_control(adapter); | |
1227 | ||
1da177e4 LT |
1228 | return 0; |
1229 | } | |
1230 | ||
1231 | /** | |
1232 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1233 | * @adapter: address of board private structure | |
2d7edb92 MC |
1234 | * @start: address of beginning of memory |
1235 | * @len: length of memory | |
1da177e4 LT |
1236 | **/ |
1237 | static inline boolean_t | |
1238 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
1239 | void *start, unsigned long len) | |
1240 | { | |
1241 | unsigned long begin = (unsigned long) start; | |
1242 | unsigned long end = begin + len; | |
1243 | ||
2648345f MC |
1244 | /* First rev 82545 and 82546 need to not allow any memory |
1245 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1246 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1247 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1248 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1249 | } | |
1250 | ||
1251 | return TRUE; | |
1252 | } | |
1253 | ||
1254 | /** | |
1255 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1256 | * @adapter: board private structure | |
581d708e | 1257 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1258 | * |
1259 | * Return 0 on success, negative on failure | |
1260 | **/ | |
1261 | ||
3ad2cc67 | 1262 | static int |
581d708e MC |
1263 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1264 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1265 | { |
1da177e4 LT |
1266 | struct pci_dev *pdev = adapter->pdev; |
1267 | int size; | |
1268 | ||
1269 | size = sizeof(struct e1000_buffer) * txdr->count; | |
a7ec15da RT |
1270 | |
1271 | txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); | |
1da177e4 | 1272 | if(!txdr->buffer_info) { |
2648345f MC |
1273 | DPRINTK(PROBE, ERR, |
1274 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1275 | return -ENOMEM; |
1276 | } | |
1277 | memset(txdr->buffer_info, 0, size); | |
1278 | ||
1279 | /* round up to nearest 4K */ | |
1280 | ||
1281 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
1282 | E1000_ROUNDUP(txdr->size, 4096); | |
1283 | ||
1284 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
1285 | if(!txdr->desc) { | |
1286 | setup_tx_desc_die: | |
1da177e4 | 1287 | vfree(txdr->buffer_info); |
2648345f MC |
1288 | DPRINTK(PROBE, ERR, |
1289 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1290 | return -ENOMEM; |
1291 | } | |
1292 | ||
2648345f | 1293 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1294 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1295 | void *olddesc = txdr->desc; | |
1296 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1297 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1298 | "at %p\n", txdr->size, txdr->desc); | |
1299 | /* Try again, without freeing the previous */ | |
1da177e4 | 1300 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
1da177e4 | 1301 | if(!txdr->desc) { |
2648345f | 1302 | /* Failed allocation, critical failure */ |
1da177e4 LT |
1303 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1304 | goto setup_tx_desc_die; | |
1305 | } | |
1306 | ||
1307 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1308 | /* give up */ | |
2648345f MC |
1309 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1310 | txdr->dma); | |
1da177e4 LT |
1311 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1312 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1313 | "Unable to allocate aligned memory " |
1314 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1315 | vfree(txdr->buffer_info); |
1316 | return -ENOMEM; | |
1317 | } else { | |
2648345f | 1318 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1319 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1320 | } | |
1321 | } | |
1322 | memset(txdr->desc, 0, txdr->size); | |
1323 | ||
1324 | txdr->next_to_use = 0; | |
1325 | txdr->next_to_clean = 0; | |
2ae76d98 | 1326 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1327 | |
1328 | return 0; | |
1329 | } | |
1330 | ||
581d708e MC |
1331 | /** |
1332 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1333 | * (Descriptors) for all queues | |
1334 | * @adapter: board private structure | |
1335 | * | |
1336 | * If this function returns with an error, then it's possible one or | |
1337 | * more of the rings is populated (while the rest are not). It is the | |
1338 | * callers duty to clean those orphaned rings. | |
1339 | * | |
1340 | * Return 0 on success, negative on failure | |
1341 | **/ | |
1342 | ||
1343 | int | |
1344 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1345 | { | |
1346 | int i, err = 0; | |
1347 | ||
f56799ea | 1348 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1349 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1350 | if (err) { | |
1351 | DPRINTK(PROBE, ERR, | |
1352 | "Allocation for Tx Queue %u failed\n", i); | |
1353 | break; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | return err; | |
1358 | } | |
1359 | ||
1da177e4 LT |
1360 | /** |
1361 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1362 | * @adapter: board private structure | |
1363 | * | |
1364 | * Configure the Tx unit of the MAC after a reset. | |
1365 | **/ | |
1366 | ||
1367 | static void | |
1368 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1369 | { | |
581d708e MC |
1370 | uint64_t tdba; |
1371 | struct e1000_hw *hw = &adapter->hw; | |
1372 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1373 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1374 | |
1375 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1376 | ||
f56799ea | 1377 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1378 | case 2: |
1379 | tdba = adapter->tx_ring[1].dma; | |
1380 | tdlen = adapter->tx_ring[1].count * | |
1381 | sizeof(struct e1000_tx_desc); | |
1382 | E1000_WRITE_REG(hw, TDBAL1, (tdba & 0x00000000ffffffffULL)); | |
1383 | E1000_WRITE_REG(hw, TDBAH1, (tdba >> 32)); | |
1384 | E1000_WRITE_REG(hw, TDLEN1, tdlen); | |
1385 | E1000_WRITE_REG(hw, TDH1, 0); | |
1386 | E1000_WRITE_REG(hw, TDT1, 0); | |
1387 | adapter->tx_ring[1].tdh = E1000_TDH1; | |
1388 | adapter->tx_ring[1].tdt = E1000_TDT1; | |
1389 | /* Fall Through */ | |
1390 | case 1: | |
1391 | default: | |
581d708e MC |
1392 | tdba = adapter->tx_ring[0].dma; |
1393 | tdlen = adapter->tx_ring[0].count * | |
1394 | sizeof(struct e1000_tx_desc); | |
1395 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1396 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
1397 | E1000_WRITE_REG(hw, TDLEN, tdlen); | |
1398 | E1000_WRITE_REG(hw, TDH, 0); | |
1399 | E1000_WRITE_REG(hw, TDT, 0); | |
1400 | adapter->tx_ring[0].tdh = E1000_TDH; | |
1401 | adapter->tx_ring[0].tdt = E1000_TDT; | |
24025e4e MC |
1402 | break; |
1403 | } | |
1da177e4 LT |
1404 | |
1405 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1406 | ||
0fadb059 JK |
1407 | if (hw->media_type == e1000_media_type_fiber || |
1408 | hw->media_type == e1000_media_type_internal_serdes) | |
1409 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1410 | else | |
1411 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1412 | ||
581d708e | 1413 | switch (hw->mac_type) { |
1da177e4 LT |
1414 | case e1000_82542_rev2_0: |
1415 | case e1000_82542_rev2_1: | |
1416 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1417 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1418 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1419 | break; |
1420 | default: | |
0fadb059 JK |
1421 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1422 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1423 | break; | |
1da177e4 | 1424 | } |
0fadb059 JK |
1425 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1426 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1427 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1428 | |
1429 | /* Set the Tx Interrupt Delay register */ | |
1430 | ||
581d708e MC |
1431 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1432 | if (hw->mac_type >= e1000_82540) | |
1433 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1434 | |
1435 | /* Program the Transmit Control Register */ | |
1436 | ||
581d708e | 1437 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 LT |
1438 | |
1439 | tctl &= ~E1000_TCTL_CT; | |
24025e4e | 1440 | tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1441 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1442 | ||
581d708e | 1443 | E1000_WRITE_REG(hw, TCTL, tctl); |
1da177e4 | 1444 | |
2ae76d98 MC |
1445 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1446 | tarc = E1000_READ_REG(hw, TARC0); | |
1447 | tarc |= ((1 << 25) | (1 << 21)); | |
1448 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1449 | tarc = E1000_READ_REG(hw, TARC1); | |
1450 | tarc |= (1 << 25); | |
1451 | if (tctl & E1000_TCTL_MULR) | |
1452 | tarc &= ~(1 << 28); | |
1453 | else | |
1454 | tarc |= (1 << 28); | |
1455 | E1000_WRITE_REG(hw, TARC1, tarc); | |
1456 | } | |
1457 | ||
581d708e | 1458 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1459 | |
1460 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1461 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1462 | E1000_TXD_CMD_IFCS; | |
1463 | ||
581d708e | 1464 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1465 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1466 | else | |
1467 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1468 | ||
1469 | /* Cache if we're 82544 running in PCI-X because we'll | |
1470 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1471 | if (hw->mac_type == e1000_82544 && |
1472 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 LT |
1473 | adapter->pcix_82544 = 1; |
1474 | } | |
1475 | ||
1476 | /** | |
1477 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1478 | * @adapter: board private structure | |
581d708e | 1479 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1480 | * |
1481 | * Returns 0 on success, negative on failure | |
1482 | **/ | |
1483 | ||
3ad2cc67 | 1484 | static int |
581d708e MC |
1485 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1486 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1487 | { |
1da177e4 | 1488 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1489 | int size, desc_len; |
1da177e4 LT |
1490 | |
1491 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
a7ec15da | 1492 | rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); |
581d708e | 1493 | if (!rxdr->buffer_info) { |
2648345f MC |
1494 | DPRINTK(PROBE, ERR, |
1495 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1496 | return -ENOMEM; |
1497 | } | |
1498 | memset(rxdr->buffer_info, 0, size); | |
1499 | ||
2d7edb92 MC |
1500 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1501 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
1502 | if(!rxdr->ps_page) { | |
1503 | vfree(rxdr->buffer_info); | |
1504 | DPRINTK(PROBE, ERR, | |
1505 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1506 | return -ENOMEM; | |
1507 | } | |
1508 | memset(rxdr->ps_page, 0, size); | |
1509 | ||
1510 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1511 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
1512 | if(!rxdr->ps_page_dma) { | |
1513 | vfree(rxdr->buffer_info); | |
1514 | kfree(rxdr->ps_page); | |
1515 | DPRINTK(PROBE, ERR, | |
1516 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1517 | return -ENOMEM; | |
1518 | } | |
1519 | memset(rxdr->ps_page_dma, 0, size); | |
1520 | ||
1521 | if(adapter->hw.mac_type <= e1000_82547_rev_2) | |
1522 | desc_len = sizeof(struct e1000_rx_desc); | |
1523 | else | |
1524 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1525 | ||
1da177e4 LT |
1526 | /* Round up to nearest 4K */ |
1527 | ||
2d7edb92 | 1528 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1529 | E1000_ROUNDUP(rxdr->size, 4096); |
1530 | ||
1531 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1532 | ||
581d708e MC |
1533 | if (!rxdr->desc) { |
1534 | DPRINTK(PROBE, ERR, | |
1535 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1536 | setup_rx_desc_die: |
1da177e4 | 1537 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1538 | kfree(rxdr->ps_page); |
1539 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1540 | return -ENOMEM; |
1541 | } | |
1542 | ||
2648345f | 1543 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1544 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1545 | void *olddesc = rxdr->desc; | |
1546 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1547 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1548 | "at %p\n", rxdr->size, rxdr->desc); | |
1549 | /* Try again, without freeing the previous */ | |
1da177e4 | 1550 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1551 | /* Failed allocation, critical failure */ |
581d708e | 1552 | if (!rxdr->desc) { |
1da177e4 | 1553 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1554 | DPRINTK(PROBE, ERR, |
1555 | "Unable to allocate memory " | |
1556 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1557 | goto setup_rx_desc_die; |
1558 | } | |
1559 | ||
1560 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1561 | /* give up */ | |
2648345f MC |
1562 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1563 | rxdr->dma); | |
1da177e4 | 1564 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1565 | DPRINTK(PROBE, ERR, |
1566 | "Unable to allocate aligned memory " | |
1567 | "for the receive descriptor ring\n"); | |
581d708e | 1568 | goto setup_rx_desc_die; |
1da177e4 | 1569 | } else { |
2648345f | 1570 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1571 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1572 | } | |
1573 | } | |
1574 | memset(rxdr->desc, 0, rxdr->size); | |
1575 | ||
1576 | rxdr->next_to_clean = 0; | |
1577 | rxdr->next_to_use = 0; | |
997f5cbd JK |
1578 | rxdr->rx_skb_top = NULL; |
1579 | rxdr->rx_skb_prev = NULL; | |
1da177e4 LT |
1580 | |
1581 | return 0; | |
1582 | } | |
1583 | ||
581d708e MC |
1584 | /** |
1585 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1586 | * (Descriptors) for all queues | |
1587 | * @adapter: board private structure | |
1588 | * | |
1589 | * If this function returns with an error, then it's possible one or | |
1590 | * more of the rings is populated (while the rest are not). It is the | |
1591 | * callers duty to clean those orphaned rings. | |
1592 | * | |
1593 | * Return 0 on success, negative on failure | |
1594 | **/ | |
1595 | ||
1596 | int | |
1597 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1598 | { | |
1599 | int i, err = 0; | |
1600 | ||
f56799ea | 1601 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1602 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1603 | if (err) { | |
1604 | DPRINTK(PROBE, ERR, | |
1605 | "Allocation for Rx Queue %u failed\n", i); | |
1606 | break; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | return err; | |
1611 | } | |
1612 | ||
1da177e4 | 1613 | /** |
2648345f | 1614 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1615 | * @adapter: Board private structure |
1616 | **/ | |
e4c811c9 MC |
1617 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1618 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1619 | static void |
1620 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1621 | { | |
2d7edb92 MC |
1622 | uint32_t rctl, rfctl; |
1623 | uint32_t psrctl = 0; | |
35ec56bb | 1624 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1625 | uint32_t pages = 0; |
1626 | #endif | |
1da177e4 LT |
1627 | |
1628 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1629 | ||
1630 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1631 | ||
1632 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1633 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1634 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1635 | ||
0fadb059 JK |
1636 | if (adapter->hw.mac_type > e1000_82543) |
1637 | rctl |= E1000_RCTL_SECRC; | |
1638 | ||
1639 | if (adapter->hw.tbi_compatibility_on == 1) | |
1da177e4 LT |
1640 | rctl |= E1000_RCTL_SBP; |
1641 | else | |
1642 | rctl &= ~E1000_RCTL_SBP; | |
1643 | ||
2d7edb92 MC |
1644 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1645 | rctl &= ~E1000_RCTL_LPE; | |
1646 | else | |
1647 | rctl |= E1000_RCTL_LPE; | |
1648 | ||
1da177e4 | 1649 | /* Setup buffer sizes */ |
868d5309 | 1650 | if(adapter->hw.mac_type >= e1000_82571) { |
2d7edb92 MC |
1651 | /* We can now specify buffers in 1K increments. |
1652 | * BSIZE and BSEX are ignored in this case. */ | |
1653 | rctl |= adapter->rx_buffer_len << 0x11; | |
1654 | } else { | |
1655 | rctl &= ~E1000_RCTL_SZ_4096; | |
b92ff8ee JB |
1656 | rctl &= ~E1000_RCTL_BSEX; |
1657 | rctl |= E1000_RCTL_SZ_2048; | |
2d7edb92 MC |
1658 | } |
1659 | ||
35ec56bb | 1660 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1661 | /* 82571 and greater support packet-split where the protocol |
1662 | * header is placed in skb->data and the packet data is | |
1663 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1664 | * In the case of a non-split, skb->data is linearly filled, | |
1665 | * followed by the page buffers. Therefore, skb->data is | |
1666 | * sized to hold the largest protocol header. | |
1667 | */ | |
e4c811c9 MC |
1668 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
1669 | if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) && | |
1670 | PAGE_SIZE <= 16384) | |
1671 | adapter->rx_ps_pages = pages; | |
1672 | else | |
1673 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1674 | #endif |
e4c811c9 | 1675 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1676 | /* Configure extra packet-split registers */ |
1677 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1678 | rfctl |= E1000_RFCTL_EXTEN; | |
1679 | /* disable IPv6 packet split support */ | |
1680 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1681 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1682 | ||
1683 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
1684 | ||
1685 | psrctl |= adapter->rx_ps_bsize0 >> | |
1686 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1687 | |
1688 | switch (adapter->rx_ps_pages) { | |
1689 | case 3: | |
1690 | psrctl |= PAGE_SIZE << | |
1691 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1692 | case 2: | |
1693 | psrctl |= PAGE_SIZE << | |
1694 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1695 | case 1: | |
1696 | psrctl |= PAGE_SIZE >> | |
1697 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1698 | break; | |
1699 | } | |
2d7edb92 MC |
1700 | |
1701 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1702 | } |
1703 | ||
1704 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1705 | } | |
1706 | ||
1707 | /** | |
1708 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1709 | * @adapter: board private structure | |
1710 | * | |
1711 | * Configure the Rx unit of the MAC after a reset. | |
1712 | **/ | |
1713 | ||
1714 | static void | |
1715 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1716 | { | |
581d708e MC |
1717 | uint64_t rdba; |
1718 | struct e1000_hw *hw = &adapter->hw; | |
1719 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
1720 | #ifdef CONFIG_E1000_MQ | |
1721 | uint32_t reta, mrqc; | |
1722 | int i; | |
1723 | #endif | |
2d7edb92 | 1724 | |
e4c811c9 | 1725 | if (adapter->rx_ps_pages) { |
581d708e | 1726 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
1727 | sizeof(union e1000_rx_desc_packet_split); |
1728 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1729 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1730 | } else { | |
581d708e MC |
1731 | rdlen = adapter->rx_ring[0].count * |
1732 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
1733 | adapter->clean_rx = e1000_clean_rx_irq; |
1734 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1735 | } | |
1da177e4 LT |
1736 | |
1737 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
1738 | rctl = E1000_READ_REG(hw, RCTL); |
1739 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1740 | |
1741 | /* set the Receive Delay Timer Register */ | |
581d708e | 1742 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 1743 | |
581d708e MC |
1744 | if (hw->mac_type >= e1000_82540) { |
1745 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
1da177e4 | 1746 | if(adapter->itr > 1) |
581d708e | 1747 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
1748 | 1000000000 / (adapter->itr * 256)); |
1749 | } | |
1750 | ||
2ae76d98 | 1751 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 1752 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 1753 | /* Reset delay timers after every interrupt */ |
2ae76d98 | 1754 | ctrl_ext |= E1000_CTRL_EXT_CANC; |
1e613fd9 JK |
1755 | #ifdef CONFIG_E1000_NAPI |
1756 | /* Auto-Mask interrupts upon ICR read. */ | |
1757 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
1758 | #endif | |
2ae76d98 | 1759 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
1e613fd9 | 1760 | E1000_WRITE_REG(hw, IAM, ~0); |
2ae76d98 MC |
1761 | E1000_WRITE_FLUSH(hw); |
1762 | } | |
1763 | ||
581d708e MC |
1764 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1765 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1766 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1767 | #ifdef CONFIG_E1000_MQ |
1768 | case 2: | |
1769 | rdba = adapter->rx_ring[1].dma; | |
1770 | E1000_WRITE_REG(hw, RDBAL1, (rdba & 0x00000000ffffffffULL)); | |
1771 | E1000_WRITE_REG(hw, RDBAH1, (rdba >> 32)); | |
1772 | E1000_WRITE_REG(hw, RDLEN1, rdlen); | |
1773 | E1000_WRITE_REG(hw, RDH1, 0); | |
1774 | E1000_WRITE_REG(hw, RDT1, 0); | |
1775 | adapter->rx_ring[1].rdh = E1000_RDH1; | |
1776 | adapter->rx_ring[1].rdt = E1000_RDT1; | |
1777 | /* Fall Through */ | |
1778 | #endif | |
1779 | case 1: | |
1780 | default: | |
581d708e MC |
1781 | rdba = adapter->rx_ring[0].dma; |
1782 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1783 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
1784 | E1000_WRITE_REG(hw, RDLEN, rdlen); | |
1785 | E1000_WRITE_REG(hw, RDH, 0); | |
1786 | E1000_WRITE_REG(hw, RDT, 0); | |
1787 | adapter->rx_ring[0].rdh = E1000_RDH; | |
1788 | adapter->rx_ring[0].rdt = E1000_RDT; | |
1789 | break; | |
24025e4e MC |
1790 | } |
1791 | ||
1792 | #ifdef CONFIG_E1000_MQ | |
f56799ea | 1793 | if (adapter->num_rx_queues > 1) { |
24025e4e MC |
1794 | uint32_t random[10]; |
1795 | ||
1796 | get_random_bytes(&random[0], 40); | |
1797 | ||
1798 | if (hw->mac_type <= e1000_82572) { | |
1799 | E1000_WRITE_REG(hw, RSSIR, 0); | |
1800 | E1000_WRITE_REG(hw, RSSIM, 0); | |
1801 | } | |
1802 | ||
f56799ea | 1803 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1804 | case 2: |
1805 | default: | |
1806 | reta = 0x00800080; | |
1807 | mrqc = E1000_MRQC_ENABLE_RSS_2Q; | |
1808 | break; | |
1809 | } | |
1810 | ||
1811 | /* Fill out redirection table */ | |
1812 | for (i = 0; i < 32; i++) | |
1813 | E1000_WRITE_REG_ARRAY(hw, RETA, i, reta); | |
1814 | /* Fill out hash function seeds */ | |
1815 | for (i = 0; i < 10; i++) | |
1816 | E1000_WRITE_REG_ARRAY(hw, RSSRK, i, random[i]); | |
1817 | ||
1818 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | | |
1819 | E1000_MRQC_RSS_FIELD_IPV4_TCP); | |
1820 | E1000_WRITE_REG(hw, MRQC, mrqc); | |
1821 | } | |
1822 | ||
1823 | /* Multiqueue and packet checksumming are mutually exclusive. */ | |
1824 | if (hw->mac_type >= e1000_82571) { | |
1825 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
1826 | rxcsum |= E1000_RXCSUM_PCSD; | |
1827 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); | |
1828 | } | |
1829 | ||
1830 | #else | |
1da177e4 LT |
1831 | |
1832 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ | |
581d708e MC |
1833 | if (hw->mac_type >= e1000_82543) { |
1834 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
2d7edb92 MC |
1835 | if(adapter->rx_csum == TRUE) { |
1836 | rxcsum |= E1000_RXCSUM_TUOFL; | |
1837 | ||
868d5309 | 1838 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 1839 | * Must be used in conjunction with packet-split. */ |
e4c811c9 MC |
1840 | if ((hw->mac_type >= e1000_82571) && |
1841 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
1842 | rxcsum |= E1000_RXCSUM_IPPCSE; |
1843 | } | |
1844 | } else { | |
1845 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1846 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1847 | } | |
581d708e | 1848 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 | 1849 | } |
24025e4e | 1850 | #endif /* CONFIG_E1000_MQ */ |
1da177e4 | 1851 | |
581d708e MC |
1852 | if (hw->mac_type == e1000_82573) |
1853 | E1000_WRITE_REG(hw, ERT, 0x0100); | |
2d7edb92 | 1854 | |
1da177e4 | 1855 | /* Enable Receives */ |
581d708e | 1856 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
1857 | } |
1858 | ||
1859 | /** | |
581d708e | 1860 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1861 | * @adapter: board private structure |
581d708e | 1862 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1863 | * |
1864 | * Free all transmit software resources | |
1865 | **/ | |
1866 | ||
3ad2cc67 | 1867 | static void |
581d708e MC |
1868 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
1869 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1870 | { |
1871 | struct pci_dev *pdev = adapter->pdev; | |
1872 | ||
581d708e | 1873 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1874 | |
581d708e MC |
1875 | vfree(tx_ring->buffer_info); |
1876 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1877 | |
581d708e | 1878 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1879 | |
581d708e MC |
1880 | tx_ring->desc = NULL; |
1881 | } | |
1882 | ||
1883 | /** | |
1884 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1885 | * @adapter: board private structure | |
1886 | * | |
1887 | * Free all transmit software resources | |
1888 | **/ | |
1889 | ||
1890 | void | |
1891 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
1892 | { | |
1893 | int i; | |
1894 | ||
f56799ea | 1895 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1896 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1897 | } |
1898 | ||
1899 | static inline void | |
1900 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1901 | struct e1000_buffer *buffer_info) | |
1902 | { | |
1da177e4 | 1903 | if(buffer_info->dma) { |
2648345f MC |
1904 | pci_unmap_page(adapter->pdev, |
1905 | buffer_info->dma, | |
1906 | buffer_info->length, | |
1907 | PCI_DMA_TODEVICE); | |
1da177e4 | 1908 | } |
8241e35e | 1909 | if (buffer_info->skb) |
1da177e4 | 1910 | dev_kfree_skb_any(buffer_info->skb); |
8241e35e | 1911 | memset(buffer_info, 0, sizeof(struct e1000_buffer)); |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | /** | |
1915 | * e1000_clean_tx_ring - Free Tx Buffers | |
1916 | * @adapter: board private structure | |
581d708e | 1917 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1918 | **/ |
1919 | ||
1920 | static void | |
581d708e MC |
1921 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1922 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1923 | { |
1da177e4 LT |
1924 | struct e1000_buffer *buffer_info; |
1925 | unsigned long size; | |
1926 | unsigned int i; | |
1927 | ||
1928 | /* Free all the Tx ring sk_buffs */ | |
1929 | ||
1da177e4 LT |
1930 | for(i = 0; i < tx_ring->count; i++) { |
1931 | buffer_info = &tx_ring->buffer_info[i]; | |
1932 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1933 | } | |
1934 | ||
1935 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1936 | memset(tx_ring->buffer_info, 0, size); | |
1937 | ||
1938 | /* Zero out the descriptor ring */ | |
1939 | ||
1940 | memset(tx_ring->desc, 0, tx_ring->size); | |
1941 | ||
1942 | tx_ring->next_to_use = 0; | |
1943 | tx_ring->next_to_clean = 0; | |
fd803241 | 1944 | tx_ring->last_tx_tso = 0; |
1da177e4 | 1945 | |
581d708e MC |
1946 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
1947 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
1948 | } | |
1949 | ||
1950 | /** | |
1951 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
1952 | * @adapter: board private structure | |
1953 | **/ | |
1954 | ||
1955 | static void | |
1956 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
1957 | { | |
1958 | int i; | |
1959 | ||
f56799ea | 1960 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1961 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1962 | } |
1963 | ||
1964 | /** | |
1965 | * e1000_free_rx_resources - Free Rx Resources | |
1966 | * @adapter: board private structure | |
581d708e | 1967 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
1968 | * |
1969 | * Free all receive software resources | |
1970 | **/ | |
1971 | ||
3ad2cc67 | 1972 | static void |
581d708e MC |
1973 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
1974 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1975 | { |
1da177e4 LT |
1976 | struct pci_dev *pdev = adapter->pdev; |
1977 | ||
581d708e | 1978 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
1979 | |
1980 | vfree(rx_ring->buffer_info); | |
1981 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
1982 | kfree(rx_ring->ps_page); |
1983 | rx_ring->ps_page = NULL; | |
1984 | kfree(rx_ring->ps_page_dma); | |
1985 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
1986 | |
1987 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1988 | ||
1989 | rx_ring->desc = NULL; | |
1990 | } | |
1991 | ||
1992 | /** | |
581d708e | 1993 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 1994 | * @adapter: board private structure |
581d708e MC |
1995 | * |
1996 | * Free all receive software resources | |
1997 | **/ | |
1998 | ||
1999 | void | |
2000 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2001 | { | |
2002 | int i; | |
2003 | ||
f56799ea | 2004 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2005 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2006 | } | |
2007 | ||
2008 | /** | |
2009 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2010 | * @adapter: board private structure | |
2011 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2012 | **/ |
2013 | ||
2014 | static void | |
581d708e MC |
2015 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2016 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2017 | { |
1da177e4 | 2018 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2019 | struct e1000_ps_page *ps_page; |
2020 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2021 | struct pci_dev *pdev = adapter->pdev; |
2022 | unsigned long size; | |
2d7edb92 | 2023 | unsigned int i, j; |
1da177e4 LT |
2024 | |
2025 | /* Free all the Rx ring sk_buffs */ | |
2026 | ||
2027 | for(i = 0; i < rx_ring->count; i++) { | |
2028 | buffer_info = &rx_ring->buffer_info[i]; | |
2029 | if(buffer_info->skb) { | |
1da177e4 LT |
2030 | pci_unmap_single(pdev, |
2031 | buffer_info->dma, | |
2032 | buffer_info->length, | |
2033 | PCI_DMA_FROMDEVICE); | |
2034 | ||
2035 | dev_kfree_skb(buffer_info->skb); | |
2036 | buffer_info->skb = NULL; | |
997f5cbd JK |
2037 | } |
2038 | ps_page = &rx_ring->ps_page[i]; | |
2039 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2040 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2041 | if (!ps_page->ps_page[j]) break; | |
2042 | pci_unmap_page(pdev, | |
2043 | ps_page_dma->ps_page_dma[j], | |
2044 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2045 | ps_page_dma->ps_page_dma[j] = 0; | |
2046 | put_page(ps_page->ps_page[j]); | |
2047 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2048 | } |
2049 | } | |
2050 | ||
997f5cbd JK |
2051 | /* there also may be some cached data in our adapter */ |
2052 | if (rx_ring->rx_skb_top) { | |
2053 | dev_kfree_skb(rx_ring->rx_skb_top); | |
2054 | ||
2055 | /* rx_skb_prev will be wiped out by rx_skb_top */ | |
2056 | rx_ring->rx_skb_top = NULL; | |
2057 | rx_ring->rx_skb_prev = NULL; | |
2058 | } | |
2059 | ||
2060 | ||
1da177e4 LT |
2061 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
2062 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2063 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2064 | memset(rx_ring->ps_page, 0, size); | |
2065 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2066 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2067 | |
2068 | /* Zero out the descriptor ring */ | |
2069 | ||
2070 | memset(rx_ring->desc, 0, rx_ring->size); | |
2071 | ||
2072 | rx_ring->next_to_clean = 0; | |
2073 | rx_ring->next_to_use = 0; | |
2074 | ||
581d708e MC |
2075 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2076 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2077 | } | |
2078 | ||
2079 | /** | |
2080 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2081 | * @adapter: board private structure | |
2082 | **/ | |
2083 | ||
2084 | static void | |
2085 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2086 | { | |
2087 | int i; | |
2088 | ||
f56799ea | 2089 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2090 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2091 | } |
2092 | ||
2093 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2094 | * and memory write and invalidate disabled for certain operations | |
2095 | */ | |
2096 | static void | |
2097 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2098 | { | |
2099 | struct net_device *netdev = adapter->netdev; | |
2100 | uint32_t rctl; | |
2101 | ||
2102 | e1000_pci_clear_mwi(&adapter->hw); | |
2103 | ||
2104 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2105 | rctl |= E1000_RCTL_RST; | |
2106 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2107 | E1000_WRITE_FLUSH(&adapter->hw); | |
2108 | mdelay(5); | |
2109 | ||
2110 | if(netif_running(netdev)) | |
581d708e | 2111 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2112 | } |
2113 | ||
2114 | static void | |
2115 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2116 | { | |
2117 | struct net_device *netdev = adapter->netdev; | |
2118 | uint32_t rctl; | |
2119 | ||
2120 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2121 | rctl &= ~E1000_RCTL_RST; | |
2122 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2123 | E1000_WRITE_FLUSH(&adapter->hw); | |
2124 | mdelay(5); | |
2125 | ||
2126 | if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
2127 | e1000_pci_set_mwi(&adapter->hw); | |
2128 | ||
2129 | if(netif_running(netdev)) { | |
2130 | e1000_configure_rx(adapter); | |
72d64a43 JK |
2131 | /* No need to loop, because 82542 supports only 1 queue */ |
2132 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
2133 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); | |
1da177e4 LT |
2134 | } |
2135 | } | |
2136 | ||
2137 | /** | |
2138 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2139 | * @netdev: network interface device structure | |
2140 | * @p: pointer to an address structure | |
2141 | * | |
2142 | * Returns 0 on success, negative on failure | |
2143 | **/ | |
2144 | ||
2145 | static int | |
2146 | e1000_set_mac(struct net_device *netdev, void *p) | |
2147 | { | |
60490fe0 | 2148 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2149 | struct sockaddr *addr = p; |
2150 | ||
2151 | if(!is_valid_ether_addr(addr->sa_data)) | |
2152 | return -EADDRNOTAVAIL; | |
2153 | ||
2154 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2155 | ||
2156 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
2157 | e1000_enter_82542_rst(adapter); | |
2158 | ||
2159 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2160 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2161 | ||
2162 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2163 | ||
868d5309 MC |
2164 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2165 | * due to controller reset from the other port. */ | |
2166 | if (adapter->hw.mac_type == e1000_82571) { | |
2167 | /* activate the work around */ | |
2168 | adapter->hw.laa_is_present = 1; | |
2169 | ||
2170 | /* Hold a copy of the LAA in RAR[14] This is done so that | |
2171 | * between the time RAR[0] gets clobbered and the time it | |
2172 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
2173 | * of the RARs and no incoming packets directed to this port | |
2174 | * are dropped. Eventaully the LAA will be in RAR[0] and | |
2175 | * RAR[14] */ | |
2176 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, | |
2177 | E1000_RAR_ENTRIES - 1); | |
2178 | } | |
2179 | ||
1da177e4 LT |
2180 | if(adapter->hw.mac_type == e1000_82542_rev2_0) |
2181 | e1000_leave_82542_rst(adapter); | |
2182 | ||
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | /** | |
2187 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2188 | * @netdev: network interface device structure | |
2189 | * | |
2190 | * The set_multi entry point is called whenever the multicast address | |
2191 | * list or the network interface flags are updated. This routine is | |
2192 | * responsible for configuring the hardware for proper multicast, | |
2193 | * promiscuous mode, and all-multi behavior. | |
2194 | **/ | |
2195 | ||
2196 | static void | |
2197 | e1000_set_multi(struct net_device *netdev) | |
2198 | { | |
60490fe0 | 2199 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2200 | struct e1000_hw *hw = &adapter->hw; |
2201 | struct dev_mc_list *mc_ptr; | |
2202 | uint32_t rctl; | |
2203 | uint32_t hash_value; | |
868d5309 | 2204 | int i, rar_entries = E1000_RAR_ENTRIES; |
1da177e4 | 2205 | |
868d5309 MC |
2206 | /* reserve RAR[14] for LAA over-write work-around */ |
2207 | if (adapter->hw.mac_type == e1000_82571) | |
2208 | rar_entries--; | |
1da177e4 | 2209 | |
2648345f MC |
2210 | /* Check for Promiscuous and All Multicast modes */ |
2211 | ||
1da177e4 LT |
2212 | rctl = E1000_READ_REG(hw, RCTL); |
2213 | ||
2214 | if(netdev->flags & IFF_PROMISC) { | |
2215 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2216 | } else if(netdev->flags & IFF_ALLMULTI) { | |
2217 | rctl |= E1000_RCTL_MPE; | |
2218 | rctl &= ~E1000_RCTL_UPE; | |
2219 | } else { | |
2220 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2221 | } | |
2222 | ||
2223 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2224 | ||
2225 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2226 | ||
2227 | if(hw->mac_type == e1000_82542_rev2_0) | |
2228 | e1000_enter_82542_rst(adapter); | |
2229 | ||
2230 | /* load the first 14 multicast address into the exact filters 1-14 | |
2231 | * RAR 0 is used for the station MAC adddress | |
2232 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2233 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2234 | */ |
2235 | mc_ptr = netdev->mc_list; | |
2236 | ||
868d5309 MC |
2237 | for(i = 1; i < rar_entries; i++) { |
2238 | if (mc_ptr) { | |
1da177e4 LT |
2239 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2240 | mc_ptr = mc_ptr->next; | |
2241 | } else { | |
2242 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2243 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | /* clear the old settings from the multicast hash table */ | |
2248 | ||
2249 | for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++) | |
2250 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
2251 | ||
2252 | /* load any remaining addresses into the hash table */ | |
2253 | ||
2254 | for(; mc_ptr; mc_ptr = mc_ptr->next) { | |
2255 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
2256 | e1000_mta_set(hw, hash_value); | |
2257 | } | |
2258 | ||
2259 | if(hw->mac_type == e1000_82542_rev2_0) | |
2260 | e1000_leave_82542_rst(adapter); | |
1da177e4 LT |
2261 | } |
2262 | ||
2263 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2264 | * the phy */ | |
2265 | ||
2266 | static void | |
2267 | e1000_update_phy_info(unsigned long data) | |
2268 | { | |
2269 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2270 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2271 | } | |
2272 | ||
2273 | /** | |
2274 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2275 | * @data: pointer to adapter cast into an unsigned long | |
2276 | **/ | |
2277 | ||
2278 | static void | |
2279 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2280 | { | |
2281 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2282 | struct net_device *netdev = adapter->netdev; | |
2283 | uint32_t tctl; | |
2284 | ||
2285 | if(atomic_read(&adapter->tx_fifo_stall)) { | |
2286 | if((E1000_READ_REG(&adapter->hw, TDT) == | |
2287 | E1000_READ_REG(&adapter->hw, TDH)) && | |
2288 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2289 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2290 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2291 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2292 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2293 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2294 | tctl & ~E1000_TCTL_EN); | |
2295 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2296 | adapter->tx_head_addr); | |
2297 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2298 | adapter->tx_head_addr); | |
2299 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2300 | adapter->tx_head_addr); | |
2301 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2302 | adapter->tx_head_addr); | |
2303 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2304 | E1000_WRITE_FLUSH(&adapter->hw); | |
2305 | ||
2306 | adapter->tx_fifo_head = 0; | |
2307 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2308 | netif_wake_queue(netdev); | |
2309 | } else { | |
2310 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2311 | } | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | /** | |
2316 | * e1000_watchdog - Timer Call-back | |
2317 | * @data: pointer to adapter cast into an unsigned long | |
2318 | **/ | |
2319 | static void | |
2320 | e1000_watchdog(unsigned long data) | |
2321 | { | |
2322 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2323 | ||
2324 | /* Do the rest outside of interrupt context */ | |
2325 | schedule_work(&adapter->watchdog_task); | |
2326 | } | |
2327 | ||
2328 | static void | |
2329 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
2330 | { | |
2331 | struct net_device *netdev = adapter->netdev; | |
545c67c0 | 2332 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
1da177e4 LT |
2333 | uint32_t link; |
2334 | ||
2335 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
2336 | if (adapter->hw.mac_type == e1000_82573) { |
2337 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
2338 | if(adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) | |
2339 | e1000_update_mng_vlan(adapter); | |
2340 | } | |
1da177e4 LT |
2341 | |
2342 | if((adapter->hw.media_type == e1000_media_type_internal_serdes) && | |
2343 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) | |
2344 | link = !adapter->hw.serdes_link_down; | |
2345 | else | |
2346 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2347 | ||
2348 | if(link) { | |
2349 | if(!netif_carrier_ok(netdev)) { | |
2350 | e1000_get_speed_and_duplex(&adapter->hw, | |
2351 | &adapter->link_speed, | |
2352 | &adapter->link_duplex); | |
2353 | ||
2354 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
2355 | adapter->link_speed, | |
2356 | adapter->link_duplex == FULL_DUPLEX ? | |
2357 | "Full Duplex" : "Half Duplex"); | |
2358 | ||
66a2b0a3 JK |
2359 | /* tweak tx_queue_len according to speed/duplex */ |
2360 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2361 | adapter->tx_timeout_factor = 1; | |
2362 | if (adapter->link_duplex == HALF_DUPLEX) { | |
2363 | switch (adapter->link_speed) { | |
2364 | case SPEED_10: | |
2365 | netdev->tx_queue_len = 10; | |
2366 | adapter->tx_timeout_factor = 8; | |
2367 | break; | |
2368 | case SPEED_100: | |
2369 | netdev->tx_queue_len = 100; | |
2370 | break; | |
2371 | } | |
2372 | } | |
2373 | ||
1da177e4 LT |
2374 | netif_carrier_on(netdev); |
2375 | netif_wake_queue(netdev); | |
2376 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2377 | adapter->smartspeed = 0; | |
2378 | } | |
2379 | } else { | |
2380 | if(netif_carrier_ok(netdev)) { | |
2381 | adapter->link_speed = 0; | |
2382 | adapter->link_duplex = 0; | |
2383 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2384 | netif_carrier_off(netdev); | |
2385 | netif_stop_queue(netdev); | |
2386 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2387 | } | |
2388 | ||
2389 | e1000_smartspeed(adapter); | |
2390 | } | |
2391 | ||
2392 | e1000_update_stats(adapter); | |
2393 | ||
2394 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2395 | adapter->tpt_old = adapter->stats.tpt; | |
2396 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2397 | adapter->colc_old = adapter->stats.colc; | |
2398 | ||
2399 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2400 | adapter->gorcl_old = adapter->stats.gorcl; | |
2401 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2402 | adapter->gotcl_old = adapter->stats.gotcl; | |
2403 | ||
2404 | e1000_update_adaptive(&adapter->hw); | |
2405 | ||
f56799ea JK |
2406 | #ifdef CONFIG_E1000_MQ |
2407 | txdr = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); | |
2408 | #endif | |
2409 | if (!netif_carrier_ok(netdev)) { | |
581d708e | 2410 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2411 | /* We've lost link, so the controller stops DMA, |
2412 | * but we've got queued Tx work that's never going | |
2413 | * to get done, so reset controller to flush Tx. | |
2414 | * (Do the reset outside of interrupt context). */ | |
2415 | schedule_work(&adapter->tx_timeout_task); | |
2416 | } | |
2417 | } | |
2418 | ||
2419 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
2420 | if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { | |
2421 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total | |
2422 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
2423 | * else is between 2000-8000. */ | |
2424 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
2425 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? | |
2426 | adapter->gotcl - adapter->gorcl : | |
2427 | adapter->gorcl - adapter->gotcl) / 10000; | |
2428 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2429 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
2430 | } | |
2431 | ||
2432 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
2433 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2434 | ||
2648345f | 2435 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2436 | adapter->detect_tx_hung = TRUE; |
2437 | ||
868d5309 MC |
2438 | /* With 82571 controllers, LAA may be overwritten due to controller |
2439 | * reset from the other port. Set the appropriate LAA in RAR[0] */ | |
2440 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2441 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2442 | ||
1da177e4 LT |
2443 | /* Reset the timer */ |
2444 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
2445 | } | |
2446 | ||
2447 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
2448 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2449 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2450 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2451 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2452 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2453 | ||
2454 | static inline int | |
581d708e MC |
2455 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2456 | struct sk_buff *skb) | |
1da177e4 LT |
2457 | { |
2458 | #ifdef NETIF_F_TSO | |
2459 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2460 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2461 | unsigned int i; |
2462 | uint32_t cmd_length = 0; | |
2d7edb92 | 2463 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2464 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2465 | int err; | |
2466 | ||
2467 | if(skb_shinfo(skb)->tso_size) { | |
2468 | if (skb_header_cloned(skb)) { | |
2469 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2470 | if (err) | |
2471 | return err; | |
2472 | } | |
2473 | ||
2474 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2475 | mss = skb_shinfo(skb)->tso_size; | |
2d7edb92 MC |
2476 | if(skb->protocol == ntohs(ETH_P_IP)) { |
2477 | skb->nh.iph->tot_len = 0; | |
2478 | skb->nh.iph->check = 0; | |
2479 | skb->h.th->check = | |
2480 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
2481 | skb->nh.iph->daddr, | |
2482 | 0, | |
2483 | IPPROTO_TCP, | |
2484 | 0); | |
2485 | cmd_length = E1000_TXD_CMD_IP; | |
2486 | ipcse = skb->h.raw - skb->data - 1; | |
2487 | #ifdef NETIF_F_TSO_IPV6 | |
2488 | } else if(skb->protocol == ntohs(ETH_P_IPV6)) { | |
2489 | skb->nh.ipv6h->payload_len = 0; | |
2490 | skb->h.th->check = | |
2491 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
2492 | &skb->nh.ipv6h->daddr, | |
2493 | 0, | |
2494 | IPPROTO_TCP, | |
2495 | 0); | |
2496 | ipcse = 0; | |
2497 | #endif | |
2498 | } | |
1da177e4 LT |
2499 | ipcss = skb->nh.raw - skb->data; |
2500 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
2501 | tucss = skb->h.raw - skb->data; |
2502 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
2503 | tucse = 0; | |
2504 | ||
2505 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2506 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2507 | |
581d708e MC |
2508 | i = tx_ring->next_to_use; |
2509 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2510 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2511 | |
2512 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2513 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2514 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2515 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2516 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2517 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2518 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2519 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2520 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2521 | ||
545c67c0 JK |
2522 | buffer_info->time_stamp = jiffies; |
2523 | ||
581d708e MC |
2524 | if (++i == tx_ring->count) i = 0; |
2525 | tx_ring->next_to_use = i; | |
1da177e4 | 2526 | |
8241e35e | 2527 | return TRUE; |
1da177e4 LT |
2528 | } |
2529 | #endif | |
2530 | ||
8241e35e | 2531 | return FALSE; |
1da177e4 LT |
2532 | } |
2533 | ||
2534 | static inline boolean_t | |
581d708e MC |
2535 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2536 | struct sk_buff *skb) | |
1da177e4 LT |
2537 | { |
2538 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2539 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2540 | unsigned int i; |
2541 | uint8_t css; | |
2542 | ||
2543 | if(likely(skb->ip_summed == CHECKSUM_HW)) { | |
2544 | css = skb->h.raw - skb->data; | |
2545 | ||
581d708e | 2546 | i = tx_ring->next_to_use; |
545c67c0 | 2547 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2548 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 LT |
2549 | |
2550 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2551 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
2552 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2553 | context_desc->tcp_seg_setup.data = 0; | |
2554 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2555 | ||
545c67c0 JK |
2556 | buffer_info->time_stamp = jiffies; |
2557 | ||
581d708e MC |
2558 | if (unlikely(++i == tx_ring->count)) i = 0; |
2559 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2560 | |
2561 | return TRUE; | |
2562 | } | |
2563 | ||
2564 | return FALSE; | |
2565 | } | |
2566 | ||
2567 | #define E1000_MAX_TXD_PWR 12 | |
2568 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2569 | ||
2570 | static inline int | |
581d708e MC |
2571 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2572 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2573 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2574 | { |
1da177e4 LT |
2575 | struct e1000_buffer *buffer_info; |
2576 | unsigned int len = skb->len; | |
2577 | unsigned int offset = 0, size, count = 0, i; | |
2578 | unsigned int f; | |
2579 | len -= skb->data_len; | |
2580 | ||
2581 | i = tx_ring->next_to_use; | |
2582 | ||
2583 | while(len) { | |
2584 | buffer_info = &tx_ring->buffer_info[i]; | |
2585 | size = min(len, max_per_txd); | |
2586 | #ifdef NETIF_F_TSO | |
fd803241 JK |
2587 | /* Workaround for Controller erratum -- |
2588 | * descriptor for non-tso packet in a linear SKB that follows a | |
2589 | * tso gets written back prematurely before the data is fully | |
2590 | * DMAd to the controller */ | |
2591 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2592 | !skb_shinfo(skb)->tso_size) { | |
2593 | tx_ring->last_tx_tso = 0; | |
2594 | size -= 4; | |
2595 | } | |
2596 | ||
1da177e4 LT |
2597 | /* Workaround for premature desc write-backs |
2598 | * in TSO mode. Append 4-byte sentinel desc */ | |
2599 | if(unlikely(mss && !nr_frags && size == len && size > 8)) | |
2600 | size -= 4; | |
2601 | #endif | |
97338bde MC |
2602 | /* work-around for errata 10 and it applies |
2603 | * to all controllers in PCI-X mode | |
2604 | * The fix is to make sure that the first descriptor of a | |
2605 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2606 | */ | |
2607 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
2608 | (size > 2015) && count == 0)) | |
2609 | size = 2015; | |
2610 | ||
1da177e4 LT |
2611 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2612 | * terminating buffers within evenly-aligned dwords. */ | |
2613 | if(unlikely(adapter->pcix_82544 && | |
2614 | !((unsigned long)(skb->data + offset + size - 1) & 4) && | |
2615 | size > 4)) | |
2616 | size -= 4; | |
2617 | ||
2618 | buffer_info->length = size; | |
2619 | buffer_info->dma = | |
2620 | pci_map_single(adapter->pdev, | |
2621 | skb->data + offset, | |
2622 | size, | |
2623 | PCI_DMA_TODEVICE); | |
2624 | buffer_info->time_stamp = jiffies; | |
2625 | ||
2626 | len -= size; | |
2627 | offset += size; | |
2628 | count++; | |
2629 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2630 | } | |
2631 | ||
2632 | for(f = 0; f < nr_frags; f++) { | |
2633 | struct skb_frag_struct *frag; | |
2634 | ||
2635 | frag = &skb_shinfo(skb)->frags[f]; | |
2636 | len = frag->size; | |
2637 | offset = frag->page_offset; | |
2638 | ||
2639 | while(len) { | |
2640 | buffer_info = &tx_ring->buffer_info[i]; | |
2641 | size = min(len, max_per_txd); | |
2642 | #ifdef NETIF_F_TSO | |
2643 | /* Workaround for premature desc write-backs | |
2644 | * in TSO mode. Append 4-byte sentinel desc */ | |
2645 | if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) | |
2646 | size -= 4; | |
2647 | #endif | |
2648 | /* Workaround for potential 82544 hang in PCI-X. | |
2649 | * Avoid terminating buffers within evenly-aligned | |
2650 | * dwords. */ | |
2651 | if(unlikely(adapter->pcix_82544 && | |
2652 | !((unsigned long)(frag->page+offset+size-1) & 4) && | |
2653 | size > 4)) | |
2654 | size -= 4; | |
2655 | ||
2656 | buffer_info->length = size; | |
2657 | buffer_info->dma = | |
2658 | pci_map_page(adapter->pdev, | |
2659 | frag->page, | |
2660 | offset, | |
2661 | size, | |
2662 | PCI_DMA_TODEVICE); | |
2663 | buffer_info->time_stamp = jiffies; | |
2664 | ||
2665 | len -= size; | |
2666 | offset += size; | |
2667 | count++; | |
2668 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2669 | } | |
2670 | } | |
2671 | ||
2672 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2673 | tx_ring->buffer_info[i].skb = skb; | |
2674 | tx_ring->buffer_info[first].next_to_watch = i; | |
2675 | ||
2676 | return count; | |
2677 | } | |
2678 | ||
2679 | static inline void | |
581d708e MC |
2680 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2681 | int tx_flags, int count) | |
1da177e4 | 2682 | { |
1da177e4 LT |
2683 | struct e1000_tx_desc *tx_desc = NULL; |
2684 | struct e1000_buffer *buffer_info; | |
2685 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2686 | unsigned int i; | |
2687 | ||
2688 | if(likely(tx_flags & E1000_TX_FLAGS_TSO)) { | |
2689 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
2690 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2691 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2692 | ||
2693 | if(likely(tx_flags & E1000_TX_FLAGS_IPV4)) | |
2694 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
1da177e4 LT |
2695 | } |
2696 | ||
2697 | if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) { | |
2698 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
2699 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2700 | } | |
2701 | ||
2702 | if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { | |
2703 | txd_lower |= E1000_TXD_CMD_VLE; | |
2704 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2705 | } | |
2706 | ||
2707 | i = tx_ring->next_to_use; | |
2708 | ||
2709 | while(count--) { | |
2710 | buffer_info = &tx_ring->buffer_info[i]; | |
2711 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2712 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2713 | tx_desc->lower.data = | |
2714 | cpu_to_le32(txd_lower | buffer_info->length); | |
2715 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
2716 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2717 | } | |
2718 | ||
2719 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2720 | ||
2721 | /* Force memory writes to complete before letting h/w | |
2722 | * know there are new descriptors to fetch. (Only | |
2723 | * applicable for weak-ordered memory model archs, | |
2724 | * such as IA-64). */ | |
2725 | wmb(); | |
2726 | ||
2727 | tx_ring->next_to_use = i; | |
581d708e | 2728 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
1da177e4 LT |
2729 | } |
2730 | ||
2731 | /** | |
2732 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2733 | * The workaround is to avoid queuing a large packet that would span | |
2734 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2735 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2736 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2737 | * to the beginning of the Tx FIFO. | |
2738 | **/ | |
2739 | ||
2740 | #define E1000_FIFO_HDR 0x10 | |
2741 | #define E1000_82547_PAD_LEN 0x3E0 | |
2742 | ||
2743 | static inline int | |
2744 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2745 | { | |
2746 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2747 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2748 | ||
2749 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2750 | ||
2751 | if(adapter->link_duplex != HALF_DUPLEX) | |
2752 | goto no_fifo_stall_required; | |
2753 | ||
2754 | if(atomic_read(&adapter->tx_fifo_stall)) | |
2755 | return 1; | |
2756 | ||
2757 | if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { | |
2758 | atomic_set(&adapter->tx_fifo_stall, 1); | |
2759 | return 1; | |
2760 | } | |
2761 | ||
2762 | no_fifo_stall_required: | |
2763 | adapter->tx_fifo_head += skb_fifo_len; | |
2764 | if(adapter->tx_fifo_head >= adapter->tx_fifo_size) | |
2765 | adapter->tx_fifo_head -= adapter->tx_fifo_size; | |
2766 | return 0; | |
2767 | } | |
2768 | ||
2d7edb92 MC |
2769 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
2770 | static inline int | |
2771 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2772 | { | |
2773 | struct e1000_hw *hw = &adapter->hw; | |
2774 | uint16_t length, offset; | |
2775 | if(vlan_tx_tag_present(skb)) { | |
2776 | if(!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2777 | ( adapter->hw.mng_cookie.status & | |
2778 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2779 | return 0; | |
2780 | } | |
a174fd88 | 2781 | if ((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) { |
2d7edb92 MC |
2782 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
2783 | if((htons(ETH_P_IP) == eth->h_proto)) { | |
2784 | const struct iphdr *ip = | |
2785 | (struct iphdr *)((uint8_t *)skb->data+14); | |
2786 | if(IPPROTO_UDP == ip->protocol) { | |
2787 | struct udphdr *udp = | |
2788 | (struct udphdr *)((uint8_t *)ip + | |
2789 | (ip->ihl << 2)); | |
2790 | if(ntohs(udp->dest) == 67) { | |
2791 | offset = (uint8_t *)udp + 8 - skb->data; | |
2792 | length = skb->len - offset; | |
2793 | ||
2794 | return e1000_mng_write_dhcp_info(hw, | |
2795 | (uint8_t *)udp + 8, | |
2796 | length); | |
2797 | } | |
2798 | } | |
2799 | } | |
2800 | } | |
2801 | return 0; | |
2802 | } | |
2803 | ||
1da177e4 LT |
2804 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2805 | static int | |
2806 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2807 | { | |
60490fe0 | 2808 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 2809 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2810 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2811 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2812 | unsigned int tx_flags = 0; | |
2813 | unsigned int len = skb->len; | |
2814 | unsigned long flags; | |
2815 | unsigned int nr_frags = 0; | |
2816 | unsigned int mss = 0; | |
2817 | int count = 0; | |
2818 | int tso; | |
2819 | unsigned int f; | |
2820 | len -= skb->data_len; | |
2821 | ||
24025e4e MC |
2822 | #ifdef CONFIG_E1000_MQ |
2823 | tx_ring = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); | |
2824 | #else | |
581d708e | 2825 | tx_ring = adapter->tx_ring; |
24025e4e MC |
2826 | #endif |
2827 | ||
581d708e | 2828 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2829 | dev_kfree_skb_any(skb); |
2830 | return NETDEV_TX_OK; | |
2831 | } | |
2832 | ||
2833 | #ifdef NETIF_F_TSO | |
2834 | mss = skb_shinfo(skb)->tso_size; | |
2648345f | 2835 | /* The controller does a simple calculation to |
1da177e4 LT |
2836 | * make sure there is enough room in the FIFO before |
2837 | * initiating the DMA for each buffer. The calc is: | |
2838 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2839 | * overrun the FIFO, adjust the max buffer len if mss | |
2840 | * drops. */ | |
2841 | if(mss) { | |
9a3056da | 2842 | uint8_t hdr_len; |
1da177e4 LT |
2843 | max_per_txd = min(mss << 2, max_per_txd); |
2844 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da JK |
2845 | |
2846 | /* TSO Workaround for 82571/2 Controllers -- if skb->data | |
2847 | * points to just header, pull a few bytes of payload from | |
2848 | * frags into skb->data */ | |
2849 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2850 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len)) && | |
2851 | (adapter->hw.mac_type == e1000_82571 || | |
2852 | adapter->hw.mac_type == e1000_82572)) { | |
d74bbd3b JK |
2853 | unsigned int pull_size; |
2854 | pull_size = min((unsigned int)4, skb->data_len); | |
2855 | if (!__pskb_pull_tail(skb, pull_size)) { | |
2856 | printk(KERN_ERR "__pskb_pull_tail failed.\n"); | |
2857 | dev_kfree_skb_any(skb); | |
2858 | return -EFAULT; | |
2859 | } | |
9a3056da JK |
2860 | len = skb->len - skb->data_len; |
2861 | } | |
1da177e4 LT |
2862 | } |
2863 | ||
2864 | if((mss) || (skb->ip_summed == CHECKSUM_HW)) | |
9a3056da | 2865 | /* reserve a descriptor for the offload context */ |
1da177e4 | 2866 | count++; |
2648345f | 2867 | count++; |
1da177e4 LT |
2868 | #else |
2869 | if(skb->ip_summed == CHECKSUM_HW) | |
2870 | count++; | |
2871 | #endif | |
fd803241 JK |
2872 | |
2873 | #ifdef NETIF_F_TSO | |
2874 | /* Controller Erratum workaround */ | |
2875 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2876 | !skb_shinfo(skb)->tso_size) | |
2877 | count++; | |
2878 | #endif | |
2879 | ||
1da177e4 LT |
2880 | count += TXD_USE_COUNT(len, max_txd_pwr); |
2881 | ||
2882 | if(adapter->pcix_82544) | |
2883 | count++; | |
2884 | ||
97338bde MC |
2885 | /* work-around for errata 10 and it applies to all controllers |
2886 | * in PCI-X mode, so add one more descriptor to the count | |
2887 | */ | |
2888 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
2889 | (len > 2015))) | |
2890 | count++; | |
2891 | ||
1da177e4 LT |
2892 | nr_frags = skb_shinfo(skb)->nr_frags; |
2893 | for(f = 0; f < nr_frags; f++) | |
2894 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
2895 | max_txd_pwr); | |
2896 | if(adapter->pcix_82544) | |
2897 | count += nr_frags; | |
2898 | ||
2d7edb92 MC |
2899 | if(adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) ) |
2900 | e1000_transfer_dhcp_info(adapter, skb); | |
2901 | ||
581d708e MC |
2902 | local_irq_save(flags); |
2903 | if (!spin_trylock(&tx_ring->tx_lock)) { | |
2904 | /* Collision - tell upper layer to requeue */ | |
2905 | local_irq_restore(flags); | |
2906 | return NETDEV_TX_LOCKED; | |
2907 | } | |
1da177e4 LT |
2908 | |
2909 | /* need: count + 2 desc gap to keep tail from touching | |
2910 | * head, otherwise try next time */ | |
581d708e | 2911 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) { |
1da177e4 | 2912 | netif_stop_queue(netdev); |
581d708e | 2913 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2914 | return NETDEV_TX_BUSY; |
2915 | } | |
2916 | ||
2917 | if(unlikely(adapter->hw.mac_type == e1000_82547)) { | |
2918 | if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
2919 | netif_stop_queue(netdev); | |
2920 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
581d708e | 2921 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2922 | return NETDEV_TX_BUSY; |
2923 | } | |
2924 | } | |
2925 | ||
2926 | if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
2927 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
2928 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2929 | } | |
2930 | ||
581d708e | 2931 | first = tx_ring->next_to_use; |
1da177e4 | 2932 | |
581d708e | 2933 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
2934 | if (tso < 0) { |
2935 | dev_kfree_skb_any(skb); | |
581d708e | 2936 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2937 | return NETDEV_TX_OK; |
2938 | } | |
2939 | ||
fd803241 JK |
2940 | if (likely(tso)) { |
2941 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 2942 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 2943 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
2944 | tx_flags |= E1000_TX_FLAGS_CSUM; |
2945 | ||
2d7edb92 | 2946 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 2947 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 2948 | * no longer assume, we must. */ |
581d708e | 2949 | if (likely(skb->protocol == ntohs(ETH_P_IP))) |
2d7edb92 MC |
2950 | tx_flags |= E1000_TX_FLAGS_IPV4; |
2951 | ||
581d708e MC |
2952 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
2953 | e1000_tx_map(adapter, tx_ring, skb, first, | |
2954 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
2955 | |
2956 | netdev->trans_start = jiffies; | |
2957 | ||
2958 | /* Make sure there is space in the ring for the next send. */ | |
581d708e | 2959 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2)) |
1da177e4 LT |
2960 | netif_stop_queue(netdev); |
2961 | ||
581d708e | 2962 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2963 | return NETDEV_TX_OK; |
2964 | } | |
2965 | ||
2966 | /** | |
2967 | * e1000_tx_timeout - Respond to a Tx Hang | |
2968 | * @netdev: network interface device structure | |
2969 | **/ | |
2970 | ||
2971 | static void | |
2972 | e1000_tx_timeout(struct net_device *netdev) | |
2973 | { | |
60490fe0 | 2974 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2975 | |
2976 | /* Do the reset outside of interrupt context */ | |
2977 | schedule_work(&adapter->tx_timeout_task); | |
2978 | } | |
2979 | ||
2980 | static void | |
2981 | e1000_tx_timeout_task(struct net_device *netdev) | |
2982 | { | |
60490fe0 | 2983 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2984 | |
6b7660cd | 2985 | adapter->tx_timeout_count++; |
1da177e4 LT |
2986 | e1000_down(adapter); |
2987 | e1000_up(adapter); | |
2988 | } | |
2989 | ||
2990 | /** | |
2991 | * e1000_get_stats - Get System Network Statistics | |
2992 | * @netdev: network interface device structure | |
2993 | * | |
2994 | * Returns the address of the device statistics structure. | |
2995 | * The statistics are actually updated from the timer callback. | |
2996 | **/ | |
2997 | ||
2998 | static struct net_device_stats * | |
2999 | e1000_get_stats(struct net_device *netdev) | |
3000 | { | |
60490fe0 | 3001 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3002 | |
6b7660cd | 3003 | /* only return the current stats */ |
1da177e4 LT |
3004 | return &adapter->net_stats; |
3005 | } | |
3006 | ||
3007 | /** | |
3008 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3009 | * @netdev: network interface device structure | |
3010 | * @new_mtu: new value for maximum frame size | |
3011 | * | |
3012 | * Returns 0 on success, negative on failure | |
3013 | **/ | |
3014 | ||
3015 | static int | |
3016 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3017 | { | |
60490fe0 | 3018 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3019 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3020 | ||
3021 | if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || | |
3022 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3023 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3024 | return -EINVAL; |
2d7edb92 | 3025 | } |
1da177e4 | 3026 | |
997f5cbd JK |
3027 | /* Adapter-specific max frame size limits. */ |
3028 | switch (adapter->hw.mac_type) { | |
3029 | case e1000_82542_rev2_0: | |
3030 | case e1000_82542_rev2_1: | |
3031 | case e1000_82573: | |
3032 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
3033 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3034 | return -EINVAL; |
2d7edb92 | 3035 | } |
997f5cbd JK |
3036 | break; |
3037 | case e1000_82571: | |
3038 | case e1000_82572: | |
3039 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 | |
3040 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3041 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3042 | return -EINVAL; | |
3043 | } | |
3044 | break; | |
3045 | default: | |
3046 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3047 | break; | |
1da177e4 LT |
3048 | } |
3049 | ||
997f5cbd JK |
3050 | /* since the driver code now supports splitting a packet across |
3051 | * multiple descriptors, most of the fifo related limitations on | |
3052 | * jumbo frame traffic have gone away. | |
3053 | * simply use 2k descriptors for everything. | |
3054 | * | |
3055 | * NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
3056 | * means we reserve 2 more, this pushes us to allocate from the next | |
3057 | * larger slab size | |
3058 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3059 | ||
3060 | /* recent hardware supports 1KB granularity */ | |
3061 | if (adapter->hw.mac_type > e1000_82547_rev_2) { | |
3062 | adapter->rx_buffer_len = | |
3063 | ((max_frame < E1000_RXBUFFER_2048) ? | |
3064 | max_frame : E1000_RXBUFFER_2048); | |
3065 | E1000_ROUNDUP(adapter->rx_buffer_len, 1024); | |
3066 | } else | |
3067 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3068 | ||
2d7edb92 MC |
3069 | netdev->mtu = new_mtu; |
3070 | ||
3071 | if(netif_running(netdev)) { | |
1da177e4 LT |
3072 | e1000_down(adapter); |
3073 | e1000_up(adapter); | |
3074 | } | |
3075 | ||
1da177e4 LT |
3076 | adapter->hw.max_frame_size = max_frame; |
3077 | ||
3078 | return 0; | |
3079 | } | |
3080 | ||
3081 | /** | |
3082 | * e1000_update_stats - Update the board statistics counters | |
3083 | * @adapter: board private structure | |
3084 | **/ | |
3085 | ||
3086 | void | |
3087 | e1000_update_stats(struct e1000_adapter *adapter) | |
3088 | { | |
3089 | struct e1000_hw *hw = &adapter->hw; | |
3090 | unsigned long flags; | |
3091 | uint16_t phy_tmp; | |
3092 | ||
3093 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3094 | ||
3095 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
3096 | ||
3097 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3098 | * called from the interrupt context, so they must only | |
3099 | * be written while holding adapter->stats_lock | |
3100 | */ | |
3101 | ||
3102 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3103 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3104 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3105 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3106 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3107 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3108 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
3109 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
3110 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3111 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3112 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3113 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3114 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
3115 | ||
3116 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3117 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3118 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3119 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3120 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3121 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3122 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3123 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3124 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3125 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3126 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3127 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3128 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3129 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3130 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3131 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3132 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3133 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3134 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3135 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3136 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3137 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3138 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3139 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3140 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3141 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
3142 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
3143 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3144 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3145 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3146 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3147 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
3148 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
3149 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3150 | ||
3151 | /* used for adaptive IFS */ | |
3152 | ||
3153 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3154 | adapter->stats.tpt += hw->tx_packet_delta; | |
3155 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3156 | adapter->stats.colc += hw->collision_delta; | |
3157 | ||
3158 | if(hw->mac_type >= e1000_82543) { | |
3159 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); | |
3160 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3161 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3162 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3163 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3164 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3165 | } | |
2d7edb92 MC |
3166 | if(hw->mac_type > e1000_82547_rev_2) { |
3167 | adapter->stats.iac += E1000_READ_REG(hw, IAC); | |
3168 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
3169 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
3170 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3171 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3172 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3173 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3174 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3175 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
3176 | } | |
1da177e4 LT |
3177 | |
3178 | /* Fill out the OS statistics structure */ | |
3179 | ||
3180 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
3181 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3182 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3183 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3184 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3185 | adapter->net_stats.collisions = adapter->stats.colc; | |
3186 | ||
3187 | /* Rx Errors */ | |
3188 | ||
3189 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
3190 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
6b7660cd JK |
3191 | adapter->stats.rlec + adapter->stats.cexterr; |
3192 | adapter->net_stats.rx_dropped = 0; | |
1da177e4 LT |
3193 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
3194 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
3195 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3196 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3197 | ||
3198 | /* Tx Errors */ | |
3199 | ||
3200 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3201 | adapter->stats.latecol; | |
3202 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3203 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3204 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3205 | ||
3206 | /* Tx Dropped needs to be maintained elsewhere */ | |
3207 | ||
3208 | /* Phy Stats */ | |
3209 | ||
3210 | if(hw->media_type == e1000_media_type_copper) { | |
3211 | if((adapter->link_speed == SPEED_1000) && | |
3212 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { | |
3213 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3214 | adapter->phy_stats.idle_errors += phy_tmp; | |
3215 | } | |
3216 | ||
3217 | if((hw->mac_type <= e1000_82546) && | |
3218 | (hw->phy_type == e1000_phy_m88) && | |
3219 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3220 | adapter->phy_stats.receive_errors += phy_tmp; | |
3221 | } | |
3222 | ||
3223 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
3224 | } | |
3225 | ||
24025e4e MC |
3226 | #ifdef CONFIG_E1000_MQ |
3227 | void | |
3228 | e1000_rx_schedule(void *data) | |
3229 | { | |
3230 | struct net_device *poll_dev, *netdev = data; | |
3231 | struct e1000_adapter *adapter = netdev->priv; | |
3232 | int this_cpu = get_cpu(); | |
3233 | ||
3234 | poll_dev = *per_cpu_ptr(adapter->cpu_netdev, this_cpu); | |
3235 | if (poll_dev == NULL) { | |
3236 | put_cpu(); | |
3237 | return; | |
3238 | } | |
3239 | ||
3240 | if (likely(netif_rx_schedule_prep(poll_dev))) | |
3241 | __netif_rx_schedule(poll_dev); | |
3242 | else | |
3243 | e1000_irq_enable(adapter); | |
3244 | ||
3245 | put_cpu(); | |
3246 | } | |
3247 | #endif | |
3248 | ||
1da177e4 LT |
3249 | /** |
3250 | * e1000_intr - Interrupt Handler | |
3251 | * @irq: interrupt number | |
3252 | * @data: pointer to a network interface device structure | |
3253 | * @pt_regs: CPU registers structure | |
3254 | **/ | |
3255 | ||
3256 | static irqreturn_t | |
3257 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
3258 | { | |
3259 | struct net_device *netdev = data; | |
60490fe0 | 3260 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3261 | struct e1000_hw *hw = &adapter->hw; |
3262 | uint32_t icr = E1000_READ_REG(hw, ICR); | |
1e613fd9 | 3263 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3264 | int i; |
1e613fd9 JK |
3265 | #else |
3266 | /* Interrupt Auto-Mask...upon reading ICR, | |
3267 | * interrupts are masked. No need for the | |
3268 | * IMC write, but it does mean we should | |
3269 | * account for it ASAP. */ | |
3270 | if (likely(hw->mac_type >= e1000_82571)) | |
3271 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3272 | #endif |
1da177e4 | 3273 | |
1e613fd9 JK |
3274 | if (unlikely(!icr)) { |
3275 | #ifdef CONFIG_E1000_NAPI | |
3276 | if (hw->mac_type >= e1000_82571) | |
3277 | e1000_irq_enable(adapter); | |
3278 | #endif | |
1da177e4 | 3279 | return IRQ_NONE; /* Not our interrupt */ |
1e613fd9 | 3280 | } |
1da177e4 LT |
3281 | |
3282 | if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { | |
3283 | hw->get_link_status = 1; | |
3284 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3285 | } | |
3286 | ||
3287 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 JK |
3288 | if (unlikely(hw->mac_type < e1000_82571)) { |
3289 | atomic_inc(&adapter->irq_sem); | |
3290 | E1000_WRITE_REG(hw, IMC, ~0); | |
3291 | E1000_WRITE_FLUSH(hw); | |
3292 | } | |
24025e4e MC |
3293 | #ifdef CONFIG_E1000_MQ |
3294 | if (atomic_read(&adapter->rx_sched_call_data.count) == 0) { | |
f56799ea JK |
3295 | /* We must setup the cpumask once count == 0 since |
3296 | * each cpu bit is cleared when the work is done. */ | |
3297 | adapter->rx_sched_call_data.cpumask = adapter->cpumask; | |
3298 | atomic_add(adapter->num_rx_queues - 1, &adapter->irq_sem); | |
3299 | atomic_set(&adapter->rx_sched_call_data.count, | |
3300 | adapter->num_rx_queues); | |
24025e4e MC |
3301 | smp_call_async_mask(&adapter->rx_sched_call_data); |
3302 | } else { | |
3303 | printk("call_data.count == %u\n", atomic_read(&adapter->rx_sched_call_data.count)); | |
1da177e4 | 3304 | } |
be2b28ed | 3305 | #else /* if !CONFIG_E1000_MQ */ |
581d708e MC |
3306 | if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0]))) |
3307 | __netif_rx_schedule(&adapter->polling_netdev[0]); | |
3308 | else | |
3309 | e1000_irq_enable(adapter); | |
be2b28ed JG |
3310 | #endif /* CONFIG_E1000_MQ */ |
3311 | ||
3312 | #else /* if !CONFIG_E1000_NAPI */ | |
1da177e4 LT |
3313 | /* Writing IMC and IMS is needed for 82547. |
3314 | Due to Hub Link bus being occupied, an interrupt | |
3315 | de-assertion message is not able to be sent. | |
3316 | When an interrupt assertion message is generated later, | |
3317 | two messages are re-ordered and sent out. | |
3318 | That causes APIC to think 82547 is in de-assertion | |
3319 | state, while 82547 is in assertion state, resulting | |
3320 | in dead lock. Writing IMC forces 82547 into | |
3321 | de-assertion state. | |
3322 | */ | |
3323 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){ | |
3324 | atomic_inc(&adapter->irq_sem); | |
2648345f | 3325 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3326 | } |
3327 | ||
3328 | for(i = 0; i < E1000_MAX_INTR; i++) | |
581d708e MC |
3329 | if(unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & |
3330 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) | |
1da177e4 LT |
3331 | break; |
3332 | ||
3333 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) | |
3334 | e1000_irq_enable(adapter); | |
581d708e | 3335 | |
be2b28ed | 3336 | #endif /* CONFIG_E1000_NAPI */ |
1da177e4 LT |
3337 | |
3338 | return IRQ_HANDLED; | |
3339 | } | |
3340 | ||
3341 | #ifdef CONFIG_E1000_NAPI | |
3342 | /** | |
3343 | * e1000_clean - NAPI Rx polling callback | |
3344 | * @adapter: board private structure | |
3345 | **/ | |
3346 | ||
3347 | static int | |
581d708e | 3348 | e1000_clean(struct net_device *poll_dev, int *budget) |
1da177e4 | 3349 | { |
581d708e MC |
3350 | struct e1000_adapter *adapter; |
3351 | int work_to_do = min(*budget, poll_dev->quota); | |
38bd3b26 | 3352 | int tx_cleaned = 0, i = 0, work_done = 0; |
581d708e MC |
3353 | |
3354 | /* Must NOT use netdev_priv macro here. */ | |
3355 | adapter = poll_dev->priv; | |
3356 | ||
3357 | /* Keep link state information with original netdev */ | |
3358 | if (!netif_carrier_ok(adapter->netdev)) | |
3359 | goto quit_polling; | |
2648345f | 3360 | |
581d708e MC |
3361 | while (poll_dev != &adapter->polling_netdev[i]) { |
3362 | i++; | |
f56799ea | 3363 | if (unlikely(i == adapter->num_rx_queues)) |
581d708e MC |
3364 | BUG(); |
3365 | } | |
3366 | ||
8241e35e JK |
3367 | if (likely(adapter->num_tx_queues == 1)) { |
3368 | /* e1000_clean is called per-cpu. This lock protects | |
3369 | * tx_ring[0] from being cleaned by multiple cpus | |
3370 | * simultaneously. A failure obtaining the lock means | |
3371 | * tx_ring[0] is currently being cleaned anyway. */ | |
3372 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3373 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3374 | &adapter->tx_ring[0]); | |
3375 | spin_unlock(&adapter->tx_queue_lock); | |
3376 | } | |
3377 | } else | |
3378 | tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]); | |
3379 | ||
581d708e MC |
3380 | adapter->clean_rx(adapter, &adapter->rx_ring[i], |
3381 | &work_done, work_to_do); | |
1da177e4 LT |
3382 | |
3383 | *budget -= work_done; | |
581d708e | 3384 | poll_dev->quota -= work_done; |
1da177e4 | 3385 | |
2b02893e | 3386 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
581d708e MC |
3387 | if((!tx_cleaned && (work_done == 0)) || |
3388 | !netif_running(adapter->netdev)) { | |
3389 | quit_polling: | |
3390 | netif_rx_complete(poll_dev); | |
1da177e4 LT |
3391 | e1000_irq_enable(adapter); |
3392 | return 0; | |
3393 | } | |
3394 | ||
3395 | return 1; | |
3396 | } | |
3397 | ||
3398 | #endif | |
3399 | /** | |
3400 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3401 | * @adapter: board private structure | |
3402 | **/ | |
3403 | ||
3404 | static boolean_t | |
581d708e MC |
3405 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3406 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3407 | { |
1da177e4 LT |
3408 | struct net_device *netdev = adapter->netdev; |
3409 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3410 | struct e1000_buffer *buffer_info; | |
3411 | unsigned int i, eop; | |
3412 | boolean_t cleaned = FALSE; | |
3413 | ||
3414 | i = tx_ring->next_to_clean; | |
3415 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3416 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3417 | ||
581d708e | 3418 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
1da177e4 LT |
3419 | for(cleaned = FALSE; !cleaned; ) { |
3420 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3421 | buffer_info = &tx_ring->buffer_info[i]; | |
3422 | cleaned = (i == eop); | |
3423 | ||
8241e35e JK |
3424 | #ifdef CONFIG_E1000_MQ |
3425 | tx_ring->tx_stats.bytes += buffer_info->length; | |
3426 | #endif | |
fd803241 | 3427 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
8241e35e | 3428 | memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); |
1da177e4 | 3429 | |
1da177e4 LT |
3430 | if(unlikely(++i == tx_ring->count)) i = 0; |
3431 | } | |
581d708e | 3432 | |
7bfa4816 JK |
3433 | #ifdef CONFIG_E1000_MQ |
3434 | tx_ring->tx_stats.packets++; | |
3435 | #endif | |
3436 | ||
1da177e4 LT |
3437 | eop = tx_ring->buffer_info[i].next_to_watch; |
3438 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3439 | } | |
3440 | ||
3441 | tx_ring->next_to_clean = i; | |
3442 | ||
581d708e | 3443 | spin_lock(&tx_ring->tx_lock); |
1da177e4 LT |
3444 | |
3445 | if(unlikely(cleaned && netif_queue_stopped(netdev) && | |
3446 | netif_carrier_ok(netdev))) | |
3447 | netif_wake_queue(netdev); | |
3448 | ||
581d708e | 3449 | spin_unlock(&tx_ring->tx_lock); |
2648345f | 3450 | |
581d708e | 3451 | if (adapter->detect_tx_hung) { |
2648345f | 3452 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
3453 | * check with the clearing of time_stamp and movement of i */ |
3454 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
3455 | if (tx_ring->buffer_info[eop].dma && |
3456 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
3457 | adapter->tx_timeout_factor * HZ) | |
70b8f1e1 | 3458 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 3459 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3460 | |
3461 | /* detected Tx unit hang */ | |
c6963ef5 | 3462 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3463 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3464 | " TDH <%x>\n" |
3465 | " TDT <%x>\n" | |
3466 | " next_to_use <%x>\n" | |
3467 | " next_to_clean <%x>\n" | |
3468 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3469 | " time_stamp <%lx>\n" |
3470 | " next_to_watch <%x>\n" | |
3471 | " jiffies <%lx>\n" | |
3472 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3473 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3474 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
3475 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
3476 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3477 | tx_ring->next_to_use, |
392137fa JK |
3478 | tx_ring->next_to_clean, |
3479 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3480 | eop, |
3481 | jiffies, | |
3482 | eop_desc->upper.fields.status); | |
1da177e4 | 3483 | netif_stop_queue(netdev); |
70b8f1e1 | 3484 | } |
1da177e4 | 3485 | } |
1da177e4 LT |
3486 | return cleaned; |
3487 | } | |
3488 | ||
3489 | /** | |
3490 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3491 | * @adapter: board private structure |
3492 | * @status_err: receive descriptor status and error fields | |
3493 | * @csum: receive descriptor csum field | |
3494 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3495 | **/ |
3496 | ||
3497 | static inline void | |
3498 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2d7edb92 MC |
3499 | uint32_t status_err, uint32_t csum, |
3500 | struct sk_buff *skb) | |
1da177e4 | 3501 | { |
2d7edb92 MC |
3502 | uint16_t status = (uint16_t)status_err; |
3503 | uint8_t errors = (uint8_t)(status_err >> 24); | |
3504 | skb->ip_summed = CHECKSUM_NONE; | |
3505 | ||
1da177e4 | 3506 | /* 82543 or newer only */ |
2d7edb92 | 3507 | if(unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 3508 | /* Ignore Checksum bit is set */ |
2d7edb92 MC |
3509 | if(unlikely(status & E1000_RXD_STAT_IXSM)) return; |
3510 | /* TCP/UDP checksum error bit is set */ | |
3511 | if(unlikely(errors & E1000_RXD_ERR_TCPE)) { | |
1da177e4 | 3512 | /* let the stack verify checksum errors */ |
1da177e4 | 3513 | adapter->hw_csum_err++; |
2d7edb92 MC |
3514 | return; |
3515 | } | |
3516 | /* TCP/UDP Checksum has not been calculated */ | |
3517 | if(adapter->hw.mac_type <= e1000_82547_rev_2) { | |
3518 | if(!(status & E1000_RXD_STAT_TCPCS)) | |
3519 | return; | |
1da177e4 | 3520 | } else { |
2d7edb92 MC |
3521 | if(!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
3522 | return; | |
3523 | } | |
3524 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3525 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3526 | /* TCP checksum is good */ |
3527 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
3528 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
3529 | /* IP fragment with UDP payload */ | |
3530 | /* Hardware complements the payload checksum, so we undo it | |
3531 | * and then put the value in host order for further stack use. | |
3532 | */ | |
3533 | csum = ntohl(csum ^ 0xFFFF); | |
3534 | skb->csum = csum; | |
3535 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 3536 | } |
2d7edb92 | 3537 | adapter->hw_csum_good++; |
1da177e4 LT |
3538 | } |
3539 | ||
3540 | /** | |
2d7edb92 | 3541 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3542 | * @adapter: board private structure |
3543 | **/ | |
3544 | ||
3545 | static boolean_t | |
3546 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3547 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3548 | struct e1000_rx_ring *rx_ring, | |
3549 | int *work_done, int work_to_do) | |
1da177e4 | 3550 | #else |
581d708e MC |
3551 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3552 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
3553 | #endif |
3554 | { | |
1da177e4 LT |
3555 | struct net_device *netdev = adapter->netdev; |
3556 | struct pci_dev *pdev = adapter->pdev; | |
3557 | struct e1000_rx_desc *rx_desc; | |
3558 | struct e1000_buffer *buffer_info; | |
1da177e4 LT |
3559 | unsigned long flags; |
3560 | uint32_t length; | |
3561 | uint8_t last_byte; | |
3562 | unsigned int i; | |
72d64a43 | 3563 | int cleaned_count = 0; |
a292ca6e | 3564 | boolean_t cleaned = FALSE, multi_descriptor = FALSE; |
1da177e4 LT |
3565 | |
3566 | i = rx_ring->next_to_clean; | |
3567 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3568 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3569 | |
b92ff8ee JB |
3570 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
3571 | struct sk_buff *skb; | |
a292ca6e | 3572 | u8 status; |
1da177e4 LT |
3573 | #ifdef CONFIG_E1000_NAPI |
3574 | if(*work_done >= work_to_do) | |
3575 | break; | |
3576 | (*work_done)++; | |
3577 | #endif | |
a292ca6e | 3578 | status = rx_desc->status; |
b92ff8ee | 3579 | skb = buffer_info->skb; |
72d64a43 JK |
3580 | cleaned = TRUE; |
3581 | cleaned_count++; | |
a292ca6e JK |
3582 | pci_unmap_single(pdev, |
3583 | buffer_info->dma, | |
3584 | buffer_info->length, | |
1da177e4 LT |
3585 | PCI_DMA_FROMDEVICE); |
3586 | ||
1da177e4 LT |
3587 | length = le16_to_cpu(rx_desc->length); |
3588 | ||
b92ff8ee JB |
3589 | skb_put(skb, length); |
3590 | ||
3591 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3592 | if (!rx_ring->rx_skb_top) { | |
3593 | rx_ring->rx_skb_top = skb; | |
3594 | rx_ring->rx_skb_top->len = length; | |
3595 | rx_ring->rx_skb_prev = skb; | |
3596 | } else { | |
3597 | if (skb_shinfo(rx_ring->rx_skb_top)->frag_list) { | |
3598 | rx_ring->rx_skb_prev->next = skb; | |
3599 | skb->prev = rx_ring->rx_skb_prev; | |
3600 | } else { | |
3601 | skb_shinfo(rx_ring->rx_skb_top)->frag_list = skb; | |
3602 | } | |
3603 | rx_ring->rx_skb_prev = skb; | |
3604 | rx_ring->rx_skb_top->data_len += length; | |
3605 | } | |
1da177e4 | 3606 | goto next_desc; |
b92ff8ee JB |
3607 | } else { |
3608 | if (rx_ring->rx_skb_top) { | |
3609 | if (skb_shinfo(rx_ring->rx_skb_top) | |
3610 | ->frag_list) { | |
3611 | rx_ring->rx_skb_prev->next = skb; | |
3612 | skb->prev = rx_ring->rx_skb_prev; | |
3613 | } else | |
3614 | skb_shinfo(rx_ring->rx_skb_top) | |
3615 | ->frag_list = skb; | |
3616 | ||
3617 | rx_ring->rx_skb_top->data_len += length; | |
3618 | rx_ring->rx_skb_top->len += | |
3619 | rx_ring->rx_skb_top->data_len; | |
3620 | ||
3621 | skb = rx_ring->rx_skb_top; | |
3622 | multi_descriptor = TRUE; | |
3623 | rx_ring->rx_skb_top = NULL; | |
3624 | rx_ring->rx_skb_prev = NULL; | |
3625 | } | |
1da177e4 LT |
3626 | } |
3627 | ||
3628 | if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { | |
3629 | last_byte = *(skb->data + length - 1); | |
b92ff8ee | 3630 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
3631 | rx_desc->errors, length, last_byte)) { |
3632 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
3633 | e1000_tbi_adjust_stats(&adapter->hw, |
3634 | &adapter->stats, | |
1da177e4 LT |
3635 | length, skb->data); |
3636 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3637 | flags); | |
3638 | length--; | |
3639 | } else { | |
3640 | dev_kfree_skb_irq(skb); | |
3641 | goto next_desc; | |
3642 | } | |
3643 | } | |
3644 | ||
a292ca6e JK |
3645 | /* code added for copybreak, this should improve |
3646 | * performance for small packets with large amounts | |
3647 | * of reassembly being done in the stack */ | |
3648 | #define E1000_CB_LENGTH 256 | |
3649 | if ((length < E1000_CB_LENGTH) && | |
3650 | !rx_ring->rx_skb_top && | |
3651 | /* or maybe (status & E1000_RXD_STAT_EOP) && */ | |
3652 | !multi_descriptor) { | |
3653 | struct sk_buff *new_skb = | |
3654 | dev_alloc_skb(length + NET_IP_ALIGN); | |
3655 | if (new_skb) { | |
3656 | skb_reserve(new_skb, NET_IP_ALIGN); | |
3657 | new_skb->dev = netdev; | |
3658 | memcpy(new_skb->data - NET_IP_ALIGN, | |
3659 | skb->data - NET_IP_ALIGN, | |
3660 | length + NET_IP_ALIGN); | |
3661 | /* save the skb in buffer_info as good */ | |
3662 | buffer_info->skb = skb; | |
3663 | skb = new_skb; | |
3664 | skb_put(skb, length); | |
3665 | } | |
3666 | } | |
3667 | ||
3668 | /* end copybreak code */ | |
1da177e4 LT |
3669 | |
3670 | /* Receive Checksum Offload */ | |
a292ca6e JK |
3671 | e1000_rx_checksum(adapter, |
3672 | (uint32_t)(status) | | |
2d7edb92 MC |
3673 | ((uint32_t)(rx_desc->errors) << 24), |
3674 | rx_desc->csum, skb); | |
1da177e4 LT |
3675 | skb->protocol = eth_type_trans(skb, netdev); |
3676 | #ifdef CONFIG_E1000_NAPI | |
3677 | if(unlikely(adapter->vlgrp && | |
a292ca6e | 3678 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 3679 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
3680 | le16_to_cpu(rx_desc->special) & |
3681 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
3682 | } else { |
3683 | netif_receive_skb(skb); | |
3684 | } | |
3685 | #else /* CONFIG_E1000_NAPI */ | |
3686 | if(unlikely(adapter->vlgrp && | |
b92ff8ee | 3687 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
3688 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
3689 | le16_to_cpu(rx_desc->special) & | |
3690 | E1000_RXD_SPC_VLAN_MASK); | |
3691 | } else { | |
3692 | netif_rx(skb); | |
3693 | } | |
3694 | #endif /* CONFIG_E1000_NAPI */ | |
3695 | netdev->last_rx = jiffies; | |
7bfa4816 JK |
3696 | #ifdef CONFIG_E1000_MQ |
3697 | rx_ring->rx_stats.packets++; | |
3698 | rx_ring->rx_stats.bytes += length; | |
3699 | #endif | |
1da177e4 LT |
3700 | |
3701 | next_desc: | |
3702 | rx_desc->status = 0; | |
1da177e4 | 3703 | |
72d64a43 JK |
3704 | /* return some buffers to hardware, one at a time is too slow */ |
3705 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3706 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3707 | cleaned_count = 0; | |
3708 | } | |
3709 | ||
1da177e4 | 3710 | } |
1da177e4 | 3711 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3712 | |
3713 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3714 | if (cleaned_count) | |
3715 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 MC |
3716 | |
3717 | return cleaned; | |
3718 | } | |
3719 | ||
3720 | /** | |
3721 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
3722 | * @adapter: board private structure | |
3723 | **/ | |
3724 | ||
3725 | static boolean_t | |
3726 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3727 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3728 | struct e1000_rx_ring *rx_ring, | |
3729 | int *work_done, int work_to_do) | |
2d7edb92 | 3730 | #else |
581d708e MC |
3731 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3732 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
3733 | #endif |
3734 | { | |
2d7edb92 MC |
3735 | union e1000_rx_desc_packet_split *rx_desc; |
3736 | struct net_device *netdev = adapter->netdev; | |
3737 | struct pci_dev *pdev = adapter->pdev; | |
3738 | struct e1000_buffer *buffer_info; | |
3739 | struct e1000_ps_page *ps_page; | |
3740 | struct e1000_ps_page_dma *ps_page_dma; | |
3741 | struct sk_buff *skb; | |
3742 | unsigned int i, j; | |
3743 | uint32_t length, staterr; | |
72d64a43 | 3744 | int cleaned_count = 0; |
2d7edb92 MC |
3745 | boolean_t cleaned = FALSE; |
3746 | ||
3747 | i = rx_ring->next_to_clean; | |
3748 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3749 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3750 | |
3751 | while(staterr & E1000_RXD_STAT_DD) { | |
3752 | buffer_info = &rx_ring->buffer_info[i]; | |
3753 | ps_page = &rx_ring->ps_page[i]; | |
3754 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3755 | #ifdef CONFIG_E1000_NAPI | |
3756 | if(unlikely(*work_done >= work_to_do)) | |
3757 | break; | |
3758 | (*work_done)++; | |
3759 | #endif | |
3760 | cleaned = TRUE; | |
72d64a43 | 3761 | cleaned_count++; |
2d7edb92 MC |
3762 | pci_unmap_single(pdev, buffer_info->dma, |
3763 | buffer_info->length, | |
3764 | PCI_DMA_FROMDEVICE); | |
3765 | ||
3766 | skb = buffer_info->skb; | |
3767 | ||
3768 | if(unlikely(!(staterr & E1000_RXD_STAT_EOP))) { | |
3769 | E1000_DBG("%s: Packet Split buffers didn't pick up" | |
3770 | " the full packet\n", netdev->name); | |
3771 | dev_kfree_skb_irq(skb); | |
3772 | goto next_desc; | |
3773 | } | |
1da177e4 | 3774 | |
2d7edb92 MC |
3775 | if(unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
3776 | dev_kfree_skb_irq(skb); | |
3777 | goto next_desc; | |
3778 | } | |
3779 | ||
3780 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3781 | ||
3782 | if(unlikely(!length)) { | |
3783 | E1000_DBG("%s: Last part of the packet spanning" | |
3784 | " multiple descriptors\n", netdev->name); | |
3785 | dev_kfree_skb_irq(skb); | |
3786 | goto next_desc; | |
3787 | } | |
3788 | ||
3789 | /* Good Receive */ | |
3790 | skb_put(skb, length); | |
3791 | ||
e4c811c9 | 3792 | for(j = 0; j < adapter->rx_ps_pages; j++) { |
2d7edb92 MC |
3793 | if(!(length = le16_to_cpu(rx_desc->wb.upper.length[j]))) |
3794 | break; | |
3795 | ||
3796 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], | |
3797 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3798 | ps_page_dma->ps_page_dma[j] = 0; | |
3799 | skb_shinfo(skb)->frags[j].page = | |
3800 | ps_page->ps_page[j]; | |
3801 | ps_page->ps_page[j] = NULL; | |
3802 | skb_shinfo(skb)->frags[j].page_offset = 0; | |
3803 | skb_shinfo(skb)->frags[j].size = length; | |
3804 | skb_shinfo(skb)->nr_frags++; | |
3805 | skb->len += length; | |
3806 | skb->data_len += length; | |
3807 | } | |
3808 | ||
3809 | e1000_rx_checksum(adapter, staterr, | |
3810 | rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); | |
3811 | skb->protocol = eth_type_trans(skb, netdev); | |
3812 | ||
2d7edb92 | 3813 | if(likely(rx_desc->wb.upper.header_status & |
b92ff8ee | 3814 | E1000_RXDPS_HDRSTAT_HDRSP)) |
e4c811c9 | 3815 | adapter->rx_hdr_split++; |
2d7edb92 MC |
3816 | #ifdef CONFIG_E1000_NAPI |
3817 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3818 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
683a38f3 MC |
3819 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3820 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3821 | } else { |
3822 | netif_receive_skb(skb); | |
3823 | } | |
3824 | #else /* CONFIG_E1000_NAPI */ | |
3825 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3826 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
683a38f3 MC |
3827 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3828 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3829 | } else { |
3830 | netif_rx(skb); | |
3831 | } | |
3832 | #endif /* CONFIG_E1000_NAPI */ | |
3833 | netdev->last_rx = jiffies; | |
7bfa4816 JK |
3834 | #ifdef CONFIG_E1000_MQ |
3835 | rx_ring->rx_stats.packets++; | |
3836 | rx_ring->rx_stats.bytes += length; | |
3837 | #endif | |
2d7edb92 MC |
3838 | |
3839 | next_desc: | |
3840 | rx_desc->wb.middle.status_error &= ~0xFF; | |
3841 | buffer_info->skb = NULL; | |
2d7edb92 | 3842 | |
72d64a43 JK |
3843 | /* return some buffers to hardware, one at a time is too slow */ |
3844 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3845 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3846 | cleaned_count = 0; | |
3847 | } | |
3848 | ||
683a38f3 | 3849 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3850 | } |
3851 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
3852 | |
3853 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3854 | if (cleaned_count) | |
3855 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 LT |
3856 | |
3857 | return cleaned; | |
3858 | } | |
3859 | ||
3860 | /** | |
2d7edb92 | 3861 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3862 | * @adapter: address of board private structure |
3863 | **/ | |
3864 | ||
3865 | static void | |
581d708e | 3866 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 3867 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 3868 | int cleaned_count) |
1da177e4 | 3869 | { |
1da177e4 LT |
3870 | struct net_device *netdev = adapter->netdev; |
3871 | struct pci_dev *pdev = adapter->pdev; | |
3872 | struct e1000_rx_desc *rx_desc; | |
3873 | struct e1000_buffer *buffer_info; | |
3874 | struct sk_buff *skb; | |
2648345f MC |
3875 | unsigned int i; |
3876 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
3877 | |
3878 | i = rx_ring->next_to_use; | |
3879 | buffer_info = &rx_ring->buffer_info[i]; | |
3880 | ||
a292ca6e JK |
3881 | while (cleaned_count--) { |
3882 | if (!(skb = buffer_info->skb)) | |
3883 | skb = dev_alloc_skb(bufsz); | |
3884 | else { | |
3885 | skb_trim(skb, 0); | |
3886 | goto map_skb; | |
3887 | } | |
3888 | ||
2648345f | 3889 | |
1da177e4 LT |
3890 | if(unlikely(!skb)) { |
3891 | /* Better luck next round */ | |
72d64a43 | 3892 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
3893 | break; |
3894 | } | |
3895 | ||
2648345f | 3896 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
3897 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3898 | struct sk_buff *oldskb = skb; | |
2648345f MC |
3899 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
3900 | "at %p\n", bufsz, skb->data); | |
3901 | /* Try again, without freeing the previous */ | |
1da177e4 | 3902 | skb = dev_alloc_skb(bufsz); |
2648345f | 3903 | /* Failed allocation, critical failure */ |
1da177e4 LT |
3904 | if (!skb) { |
3905 | dev_kfree_skb(oldskb); | |
3906 | break; | |
3907 | } | |
2648345f | 3908 | |
1da177e4 LT |
3909 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3910 | /* give up */ | |
3911 | dev_kfree_skb(skb); | |
3912 | dev_kfree_skb(oldskb); | |
3913 | break; /* while !buffer_info->skb */ | |
3914 | } else { | |
2648345f | 3915 | /* Use new allocation */ |
1da177e4 LT |
3916 | dev_kfree_skb(oldskb); |
3917 | } | |
3918 | } | |
1da177e4 LT |
3919 | /* Make buffer alignment 2 beyond a 16 byte boundary |
3920 | * this will result in a 16 byte aligned IP header after | |
3921 | * the 14 byte MAC header is removed | |
3922 | */ | |
3923 | skb_reserve(skb, NET_IP_ALIGN); | |
3924 | ||
3925 | skb->dev = netdev; | |
3926 | ||
3927 | buffer_info->skb = skb; | |
3928 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 3929 | map_skb: |
1da177e4 LT |
3930 | buffer_info->dma = pci_map_single(pdev, |
3931 | skb->data, | |
3932 | adapter->rx_buffer_len, | |
3933 | PCI_DMA_FROMDEVICE); | |
3934 | ||
2648345f MC |
3935 | /* Fix for errata 23, can't cross 64kB boundary */ |
3936 | if (!e1000_check_64k_bound(adapter, | |
3937 | (void *)(unsigned long)buffer_info->dma, | |
3938 | adapter->rx_buffer_len)) { | |
3939 | DPRINTK(RX_ERR, ERR, | |
3940 | "dma align check failed: %u bytes at %p\n", | |
3941 | adapter->rx_buffer_len, | |
3942 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
3943 | dev_kfree_skb(skb); |
3944 | buffer_info->skb = NULL; | |
3945 | ||
2648345f | 3946 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
3947 | adapter->rx_buffer_len, |
3948 | PCI_DMA_FROMDEVICE); | |
3949 | ||
3950 | break; /* while !buffer_info->skb */ | |
3951 | } | |
1da177e4 LT |
3952 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
3953 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3954 | ||
1da177e4 LT |
3955 | if(unlikely(++i == rx_ring->count)) i = 0; |
3956 | buffer_info = &rx_ring->buffer_info[i]; | |
3957 | } | |
3958 | ||
b92ff8ee JB |
3959 | if (likely(rx_ring->next_to_use != i)) { |
3960 | rx_ring->next_to_use = i; | |
3961 | if (unlikely(i-- == 0)) | |
3962 | i = (rx_ring->count - 1); | |
3963 | ||
3964 | /* Force memory writes to complete before letting h/w | |
3965 | * know there are new descriptors to fetch. (Only | |
3966 | * applicable for weak-ordered memory model archs, | |
3967 | * such as IA-64). */ | |
3968 | wmb(); | |
3969 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
3970 | } | |
1da177e4 LT |
3971 | } |
3972 | ||
2d7edb92 MC |
3973 | /** |
3974 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
3975 | * @adapter: address of board private structure | |
3976 | **/ | |
3977 | ||
3978 | static void | |
581d708e | 3979 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
3980 | struct e1000_rx_ring *rx_ring, |
3981 | int cleaned_count) | |
2d7edb92 | 3982 | { |
2d7edb92 MC |
3983 | struct net_device *netdev = adapter->netdev; |
3984 | struct pci_dev *pdev = adapter->pdev; | |
3985 | union e1000_rx_desc_packet_split *rx_desc; | |
3986 | struct e1000_buffer *buffer_info; | |
3987 | struct e1000_ps_page *ps_page; | |
3988 | struct e1000_ps_page_dma *ps_page_dma; | |
3989 | struct sk_buff *skb; | |
3990 | unsigned int i, j; | |
3991 | ||
3992 | i = rx_ring->next_to_use; | |
3993 | buffer_info = &rx_ring->buffer_info[i]; | |
3994 | ps_page = &rx_ring->ps_page[i]; | |
3995 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3996 | ||
72d64a43 | 3997 | while (cleaned_count--) { |
2d7edb92 MC |
3998 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
3999 | ||
4000 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
e4c811c9 MC |
4001 | if (j < adapter->rx_ps_pages) { |
4002 | if (likely(!ps_page->ps_page[j])) { | |
4003 | ps_page->ps_page[j] = | |
4004 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4005 | if (unlikely(!ps_page->ps_page[j])) { |
4006 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4007 | goto no_buffers; |
b92ff8ee | 4008 | } |
e4c811c9 MC |
4009 | ps_page_dma->ps_page_dma[j] = |
4010 | pci_map_page(pdev, | |
4011 | ps_page->ps_page[j], | |
4012 | 0, PAGE_SIZE, | |
4013 | PCI_DMA_FROMDEVICE); | |
4014 | } | |
4015 | /* Refresh the desc even if buffer_addrs didn't | |
4016 | * change because each write-back erases | |
4017 | * this info. | |
4018 | */ | |
4019 | rx_desc->read.buffer_addr[j+1] = | |
4020 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4021 | } else | |
4022 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4023 | } |
4024 | ||
4025 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
4026 | ||
b92ff8ee JB |
4027 | if (unlikely(!skb)) { |
4028 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4029 | break; |
b92ff8ee | 4030 | } |
2d7edb92 MC |
4031 | |
4032 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4033 | * this will result in a 16 byte aligned IP header after | |
4034 | * the 14 byte MAC header is removed | |
4035 | */ | |
4036 | skb_reserve(skb, NET_IP_ALIGN); | |
4037 | ||
4038 | skb->dev = netdev; | |
4039 | ||
4040 | buffer_info->skb = skb; | |
4041 | buffer_info->length = adapter->rx_ps_bsize0; | |
4042 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4043 | adapter->rx_ps_bsize0, | |
4044 | PCI_DMA_FROMDEVICE); | |
4045 | ||
4046 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4047 | ||
2d7edb92 MC |
4048 | if(unlikely(++i == rx_ring->count)) i = 0; |
4049 | buffer_info = &rx_ring->buffer_info[i]; | |
4050 | ps_page = &rx_ring->ps_page[i]; | |
4051 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4052 | } | |
4053 | ||
4054 | no_buffers: | |
b92ff8ee JB |
4055 | if (likely(rx_ring->next_to_use != i)) { |
4056 | rx_ring->next_to_use = i; | |
4057 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4058 | ||
4059 | /* Force memory writes to complete before letting h/w | |
4060 | * know there are new descriptors to fetch. (Only | |
4061 | * applicable for weak-ordered memory model archs, | |
4062 | * such as IA-64). */ | |
4063 | wmb(); | |
4064 | /* Hardware increments by 16 bytes, but packet split | |
4065 | * descriptors are 32 bytes...so we increment tail | |
4066 | * twice as much. | |
4067 | */ | |
4068 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4069 | } | |
2d7edb92 MC |
4070 | } |
4071 | ||
1da177e4 LT |
4072 | /** |
4073 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4074 | * @adapter: | |
4075 | **/ | |
4076 | ||
4077 | static void | |
4078 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4079 | { | |
4080 | uint16_t phy_status; | |
4081 | uint16_t phy_ctrl; | |
4082 | ||
4083 | if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || | |
4084 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) | |
4085 | return; | |
4086 | ||
4087 | if(adapter->smartspeed == 0) { | |
4088 | /* If Master/Slave config fault is asserted twice, | |
4089 | * we assume back-to-back */ | |
4090 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
4091 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
4092 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
4093 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
4094 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4095 | if(phy_ctrl & CR_1000T_MS_ENABLE) { | |
4096 | phy_ctrl &= ~CR_1000T_MS_ENABLE; | |
4097 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4098 | phy_ctrl); | |
4099 | adapter->smartspeed++; | |
4100 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
4101 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, | |
4102 | &phy_ctrl)) { | |
4103 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4104 | MII_CR_RESTART_AUTO_NEG); | |
4105 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4106 | phy_ctrl); | |
4107 | } | |
4108 | } | |
4109 | return; | |
4110 | } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { | |
4111 | /* If still no link, perhaps using 2/3 pair cable */ | |
4112 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4113 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4114 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
4115 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
4116 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { | |
4117 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4118 | MII_CR_RESTART_AUTO_NEG); | |
4119 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4120 | } | |
4121 | } | |
4122 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
4123 | if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX) | |
4124 | adapter->smartspeed = 0; | |
4125 | } | |
4126 | ||
4127 | /** | |
4128 | * e1000_ioctl - | |
4129 | * @netdev: | |
4130 | * @ifreq: | |
4131 | * @cmd: | |
4132 | **/ | |
4133 | ||
4134 | static int | |
4135 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4136 | { | |
4137 | switch (cmd) { | |
4138 | case SIOCGMIIPHY: | |
4139 | case SIOCGMIIREG: | |
4140 | case SIOCSMIIREG: | |
4141 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4142 | default: | |
4143 | return -EOPNOTSUPP; | |
4144 | } | |
4145 | } | |
4146 | ||
4147 | /** | |
4148 | * e1000_mii_ioctl - | |
4149 | * @netdev: | |
4150 | * @ifreq: | |
4151 | * @cmd: | |
4152 | **/ | |
4153 | ||
4154 | static int | |
4155 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4156 | { | |
60490fe0 | 4157 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4158 | struct mii_ioctl_data *data = if_mii(ifr); |
4159 | int retval; | |
4160 | uint16_t mii_reg; | |
4161 | uint16_t spddplx; | |
97876fc6 | 4162 | unsigned long flags; |
1da177e4 LT |
4163 | |
4164 | if(adapter->hw.media_type != e1000_media_type_copper) | |
4165 | return -EOPNOTSUPP; | |
4166 | ||
4167 | switch (cmd) { | |
4168 | case SIOCGMIIPHY: | |
4169 | data->phy_id = adapter->hw.phy_addr; | |
4170 | break; | |
4171 | case SIOCGMIIREG: | |
97876fc6 | 4172 | if(!capable(CAP_NET_ADMIN)) |
1da177e4 | 4173 | return -EPERM; |
97876fc6 MC |
4174 | spin_lock_irqsave(&adapter->stats_lock, flags); |
4175 | if(e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, | |
4176 | &data->val_out)) { | |
4177 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4178 | return -EIO; |
97876fc6 MC |
4179 | } |
4180 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4181 | break; |
4182 | case SIOCSMIIREG: | |
97876fc6 | 4183 | if(!capable(CAP_NET_ADMIN)) |
1da177e4 | 4184 | return -EPERM; |
97876fc6 | 4185 | if(data->reg_num & ~(0x1F)) |
1da177e4 LT |
4186 | return -EFAULT; |
4187 | mii_reg = data->val_in; | |
97876fc6 MC |
4188 | spin_lock_irqsave(&adapter->stats_lock, flags); |
4189 | if(e1000_write_phy_reg(&adapter->hw, data->reg_num, | |
4190 | mii_reg)) { | |
4191 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4192 | return -EIO; |
97876fc6 MC |
4193 | } |
4194 | if(adapter->hw.phy_type == e1000_phy_m88) { | |
1da177e4 LT |
4195 | switch (data->reg_num) { |
4196 | case PHY_CTRL: | |
4197 | if(mii_reg & MII_CR_POWER_DOWN) | |
4198 | break; | |
4199 | if(mii_reg & MII_CR_AUTO_NEG_EN) { | |
4200 | adapter->hw.autoneg = 1; | |
4201 | adapter->hw.autoneg_advertised = 0x2F; | |
4202 | } else { | |
4203 | if (mii_reg & 0x40) | |
4204 | spddplx = SPEED_1000; | |
4205 | else if (mii_reg & 0x2000) | |
4206 | spddplx = SPEED_100; | |
4207 | else | |
4208 | spddplx = SPEED_10; | |
4209 | spddplx += (mii_reg & 0x100) | |
4210 | ? FULL_DUPLEX : | |
4211 | HALF_DUPLEX; | |
4212 | retval = e1000_set_spd_dplx(adapter, | |
4213 | spddplx); | |
97876fc6 MC |
4214 | if(retval) { |
4215 | spin_unlock_irqrestore( | |
4216 | &adapter->stats_lock, | |
4217 | flags); | |
1da177e4 | 4218 | return retval; |
97876fc6 | 4219 | } |
1da177e4 LT |
4220 | } |
4221 | if(netif_running(adapter->netdev)) { | |
4222 | e1000_down(adapter); | |
4223 | e1000_up(adapter); | |
4224 | } else | |
4225 | e1000_reset(adapter); | |
4226 | break; | |
4227 | case M88E1000_PHY_SPEC_CTRL: | |
4228 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
97876fc6 MC |
4229 | if(e1000_phy_reset(&adapter->hw)) { |
4230 | spin_unlock_irqrestore( | |
4231 | &adapter->stats_lock, flags); | |
1da177e4 | 4232 | return -EIO; |
97876fc6 | 4233 | } |
1da177e4 LT |
4234 | break; |
4235 | } | |
4236 | } else { | |
4237 | switch (data->reg_num) { | |
4238 | case PHY_CTRL: | |
4239 | if(mii_reg & MII_CR_POWER_DOWN) | |
4240 | break; | |
4241 | if(netif_running(adapter->netdev)) { | |
4242 | e1000_down(adapter); | |
4243 | e1000_up(adapter); | |
4244 | } else | |
4245 | e1000_reset(adapter); | |
4246 | break; | |
4247 | } | |
4248 | } | |
97876fc6 | 4249 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4250 | break; |
4251 | default: | |
4252 | return -EOPNOTSUPP; | |
4253 | } | |
4254 | return E1000_SUCCESS; | |
4255 | } | |
4256 | ||
4257 | void | |
4258 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4259 | { | |
4260 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4261 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4262 | |
2648345f MC |
4263 | if(ret_val) |
4264 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); | |
1da177e4 LT |
4265 | } |
4266 | ||
4267 | void | |
4268 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4269 | { | |
4270 | struct e1000_adapter *adapter = hw->back; | |
4271 | ||
4272 | pci_clear_mwi(adapter->pdev); | |
4273 | } | |
4274 | ||
4275 | void | |
4276 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4277 | { | |
4278 | struct e1000_adapter *adapter = hw->back; | |
4279 | ||
4280 | pci_read_config_word(adapter->pdev, reg, value); | |
4281 | } | |
4282 | ||
4283 | void | |
4284 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4285 | { | |
4286 | struct e1000_adapter *adapter = hw->back; | |
4287 | ||
4288 | pci_write_config_word(adapter->pdev, reg, *value); | |
4289 | } | |
4290 | ||
4291 | uint32_t | |
4292 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
4293 | { | |
4294 | return inl(port); | |
4295 | } | |
4296 | ||
4297 | void | |
4298 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4299 | { | |
4300 | outl(value, port); | |
4301 | } | |
4302 | ||
4303 | static void | |
4304 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4305 | { | |
60490fe0 | 4306 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4307 | uint32_t ctrl, rctl; |
4308 | ||
4309 | e1000_irq_disable(adapter); | |
4310 | adapter->vlgrp = grp; | |
4311 | ||
4312 | if(grp) { | |
4313 | /* enable VLAN tag insert/strip */ | |
4314 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4315 | ctrl |= E1000_CTRL_VME; | |
4316 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4317 | ||
4318 | /* enable VLAN receive filtering */ | |
4319 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4320 | rctl |= E1000_RCTL_VFE; | |
4321 | rctl &= ~E1000_RCTL_CFIEN; | |
4322 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 4323 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
4324 | } else { |
4325 | /* disable VLAN tag insert/strip */ | |
4326 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4327 | ctrl &= ~E1000_CTRL_VME; | |
4328 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4329 | ||
4330 | /* disable VLAN filtering */ | |
4331 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4332 | rctl &= ~E1000_RCTL_VFE; | |
4333 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 MC |
4334 | if(adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
4335 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
4336 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4337 | } | |
1da177e4 LT |
4338 | } |
4339 | ||
4340 | e1000_irq_enable(adapter); | |
4341 | } | |
4342 | ||
4343 | static void | |
4344 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4345 | { | |
60490fe0 | 4346 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4347 | uint32_t vfta, index; |
2d7edb92 MC |
4348 | if((adapter->hw.mng_cookie.status & |
4349 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4350 | (vid == adapter->mng_vlan_id)) | |
4351 | return; | |
1da177e4 LT |
4352 | /* add VID to filter table */ |
4353 | index = (vid >> 5) & 0x7F; | |
4354 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4355 | vfta |= (1 << (vid & 0x1F)); | |
4356 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4357 | } | |
4358 | ||
4359 | static void | |
4360 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4361 | { | |
60490fe0 | 4362 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4363 | uint32_t vfta, index; |
4364 | ||
4365 | e1000_irq_disable(adapter); | |
4366 | ||
4367 | if(adapter->vlgrp) | |
4368 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
4369 | ||
4370 | e1000_irq_enable(adapter); | |
4371 | ||
2d7edb92 MC |
4372 | if((adapter->hw.mng_cookie.status & |
4373 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
4374 | (vid == adapter->mng_vlan_id)) { |
4375 | /* release control to f/w */ | |
4376 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4377 | return; |
ff147013 JK |
4378 | } |
4379 | ||
1da177e4 LT |
4380 | /* remove VID from filter table */ |
4381 | index = (vid >> 5) & 0x7F; | |
4382 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4383 | vfta &= ~(1 << (vid & 0x1F)); | |
4384 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4385 | } | |
4386 | ||
4387 | static void | |
4388 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
4389 | { | |
4390 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4391 | ||
4392 | if(adapter->vlgrp) { | |
4393 | uint16_t vid; | |
4394 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
4395 | if(!adapter->vlgrp->vlan_devices[vid]) | |
4396 | continue; | |
4397 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4398 | } | |
4399 | } | |
4400 | } | |
4401 | ||
4402 | int | |
4403 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
4404 | { | |
4405 | adapter->hw.autoneg = 0; | |
4406 | ||
6921368f MC |
4407 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
4408 | if((adapter->hw.media_type == e1000_media_type_fiber) && | |
4409 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { | |
4410 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4411 | return -EINVAL; | |
4412 | } | |
4413 | ||
1da177e4 LT |
4414 | switch(spddplx) { |
4415 | case SPEED_10 + DUPLEX_HALF: | |
4416 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
4417 | break; | |
4418 | case SPEED_10 + DUPLEX_FULL: | |
4419 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
4420 | break; | |
4421 | case SPEED_100 + DUPLEX_HALF: | |
4422 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
4423 | break; | |
4424 | case SPEED_100 + DUPLEX_FULL: | |
4425 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
4426 | break; | |
4427 | case SPEED_1000 + DUPLEX_FULL: | |
4428 | adapter->hw.autoneg = 1; | |
4429 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
4430 | break; | |
4431 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4432 | default: | |
2648345f | 4433 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4434 | return -EINVAL; |
4435 | } | |
4436 | return 0; | |
4437 | } | |
4438 | ||
b6a1d5f8 | 4439 | #ifdef CONFIG_PM |
2f82665f JB |
4440 | /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config |
4441 | * space versus the 64 bytes that pci_[save|restore]_state handle | |
4442 | */ | |
4443 | #define PCIE_CONFIG_SPACE_LEN 256 | |
4444 | #define PCI_CONFIG_SPACE_LEN 64 | |
4445 | static int | |
4446 | e1000_pci_save_state(struct e1000_adapter *adapter) | |
4447 | { | |
4448 | struct pci_dev *dev = adapter->pdev; | |
4449 | int size; | |
4450 | int i; | |
4451 | if (adapter->hw.mac_type >= e1000_82571) | |
4452 | size = PCIE_CONFIG_SPACE_LEN; | |
4453 | else | |
4454 | size = PCI_CONFIG_SPACE_LEN; | |
4455 | ||
4456 | WARN_ON(adapter->config_space != NULL); | |
4457 | ||
4458 | adapter->config_space = kmalloc(size, GFP_KERNEL); | |
4459 | if (!adapter->config_space) { | |
4460 | DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size); | |
4461 | return -ENOMEM; | |
4462 | } | |
4463 | for (i = 0; i < (size / 4); i++) | |
4464 | pci_read_config_dword(dev, i * 4, &adapter->config_space[i]); | |
4465 | return 0; | |
4466 | } | |
4467 | ||
4468 | static void | |
4469 | e1000_pci_restore_state(struct e1000_adapter *adapter) | |
4470 | { | |
4471 | struct pci_dev *dev = adapter->pdev; | |
4472 | int size; | |
4473 | int i; | |
4474 | if (adapter->config_space == NULL) | |
4475 | return; | |
4476 | if (adapter->hw.mac_type >= e1000_82571) | |
4477 | size = PCIE_CONFIG_SPACE_LEN; | |
4478 | else | |
4479 | size = PCI_CONFIG_SPACE_LEN; | |
4480 | for (i = 0; i < (size / 4); i++) | |
4481 | pci_write_config_dword(dev, i * 4, adapter->config_space[i]); | |
4482 | kfree(adapter->config_space); | |
4483 | adapter->config_space = NULL; | |
4484 | return; | |
4485 | } | |
4486 | #endif /* CONFIG_PM */ | |
4487 | ||
1da177e4 | 4488 | static int |
829ca9a3 | 4489 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4490 | { |
4491 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4492 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4493 | uint32_t ctrl, ctrl_ext, rctl, manc, status; |
1da177e4 | 4494 | uint32_t wufc = adapter->wol; |
240b1710 | 4495 | int retval = 0; |
1da177e4 LT |
4496 | |
4497 | netif_device_detach(netdev); | |
4498 | ||
4499 | if(netif_running(netdev)) | |
4500 | e1000_down(adapter); | |
4501 | ||
2f82665f JB |
4502 | #ifdef CONFIG_PM |
4503 | /* implement our own version of pci_save_state(pdev) because pci | |
4504 | * express adapters have larger 256 byte config spaces */ | |
4505 | retval = e1000_pci_save_state(adapter); | |
4506 | if (retval) | |
4507 | return retval; | |
4508 | #endif | |
4509 | ||
1da177e4 LT |
4510 | status = E1000_READ_REG(&adapter->hw, STATUS); |
4511 | if(status & E1000_STATUS_LU) | |
4512 | wufc &= ~E1000_WUFC_LNKC; | |
4513 | ||
4514 | if(wufc) { | |
4515 | e1000_setup_rctl(adapter); | |
4516 | e1000_set_multi(netdev); | |
4517 | ||
4518 | /* turn on all-multi mode if wake on multicast is enabled */ | |
4519 | if(adapter->wol & E1000_WUFC_MC) { | |
4520 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4521 | rctl |= E1000_RCTL_MPE; | |
4522 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4523 | } | |
4524 | ||
4525 | if(adapter->hw.mac_type >= e1000_82540) { | |
4526 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4527 | /* advertise wake from D3Cold */ | |
4528 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4529 | /* phy power management enable */ | |
4530 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4531 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4532 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4533 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4534 | } | |
4535 | ||
4536 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
4537 | adapter->hw.media_type == e1000_media_type_internal_serdes) { | |
4538 | /* keep the laser running in D3 */ | |
4539 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
4540 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4541 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
4542 | } | |
4543 | ||
2d7edb92 MC |
4544 | /* Allow time for pending master requests to run */ |
4545 | e1000_disable_pciex_master(&adapter->hw); | |
4546 | ||
1da177e4 LT |
4547 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
4548 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
240b1710 JK |
4549 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4550 | if (retval) | |
4551 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4552 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4553 | if (retval) | |
4554 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4555 | } else { |
4556 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
4557 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
240b1710 JK |
4558 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4559 | if (retval) | |
4560 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4561 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */ | |
4562 | if (retval) | |
4563 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4564 | } |
4565 | ||
1da177e4 LT |
4566 | if(adapter->hw.mac_type >= e1000_82540 && |
4567 | adapter->hw.media_type == e1000_media_type_copper) { | |
4568 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4569 | if(manc & E1000_MANC_SMBUS_EN) { | |
4570 | manc |= E1000_MANC_ARP_EN; | |
4571 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
240b1710 JK |
4572 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4573 | if (retval) | |
4574 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4575 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4576 | if (retval) | |
4577 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4578 | } |
4579 | } | |
4580 | ||
b55ccb35 JK |
4581 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4582 | * would have already happened in close and is redundant. */ | |
4583 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4584 | |
1da177e4 | 4585 | pci_disable_device(pdev); |
240b1710 JK |
4586 | |
4587 | retval = pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4588 | if (retval) | |
4589 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
1da177e4 LT |
4590 | |
4591 | return 0; | |
4592 | } | |
4593 | ||
2f82665f | 4594 | #ifdef CONFIG_PM |
1da177e4 LT |
4595 | static int |
4596 | e1000_resume(struct pci_dev *pdev) | |
4597 | { | |
4598 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4599 | struct e1000_adapter *adapter = netdev_priv(netdev); |
240b1710 | 4600 | int retval; |
b55ccb35 | 4601 | uint32_t manc, ret_val; |
1da177e4 | 4602 | |
240b1710 JK |
4603 | retval = pci_set_power_state(pdev, PCI_D0); |
4604 | if (retval) | |
4605 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
2f82665f | 4606 | e1000_pci_restore_state(adapter); |
2b02893e | 4607 | ret_val = pci_enable_device(pdev); |
a4cb847d | 4608 | pci_set_master(pdev); |
1da177e4 | 4609 | |
240b1710 JK |
4610 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4611 | if (retval) | |
4612 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4613 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); | |
4614 | if (retval) | |
4615 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4616 | |
4617 | e1000_reset(adapter); | |
4618 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4619 | ||
4620 | if(netif_running(netdev)) | |
4621 | e1000_up(adapter); | |
4622 | ||
4623 | netif_device_attach(netdev); | |
4624 | ||
4625 | if(adapter->hw.mac_type >= e1000_82540 && | |
4626 | adapter->hw.media_type == e1000_media_type_copper) { | |
4627 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4628 | manc &= ~(E1000_MANC_ARP_EN); | |
4629 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4630 | } | |
4631 | ||
b55ccb35 JK |
4632 | /* If the controller is 82573 and f/w is AMT, do not set |
4633 | * DRV_LOAD until the interface is up. For all other cases, | |
4634 | * let the f/w know that the h/w is now under the control | |
4635 | * of the driver. */ | |
4636 | if (adapter->hw.mac_type != e1000_82573 || | |
4637 | !e1000_check_mng_mode(&adapter->hw)) | |
4638 | e1000_get_hw_control(adapter); | |
2d7edb92 | 4639 | |
1da177e4 LT |
4640 | return 0; |
4641 | } | |
4642 | #endif | |
1da177e4 LT |
4643 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4644 | /* | |
4645 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4646 | * without having to re-enable interrupts. It's not called while | |
4647 | * the interrupt routine is executing. | |
4648 | */ | |
4649 | static void | |
2648345f | 4650 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4651 | { |
60490fe0 | 4652 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4653 | disable_irq(adapter->pdev->irq); |
4654 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
c4cfe567 | 4655 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
4656 | #ifndef CONFIG_E1000_NAPI |
4657 | adapter->clean_rx(adapter, adapter->rx_ring); | |
4658 | #endif | |
1da177e4 LT |
4659 | enable_irq(adapter->pdev->irq); |
4660 | } | |
4661 | #endif | |
4662 | ||
4663 | /* e1000_main.c */ |