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77bd7415 LV |
1 | /* |
2 | * PCI Error Recovery Driver for RPA-compliant PPC64 platform. | |
3c8c90ab LV |
3 | * Copyright IBM Corp. 2004 2005 |
4 | * Copyright Linas Vepstas <linas@linas.org> 2004, 2005 | |
77bd7415 LV |
5 | * |
6 | * All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or (at | |
11 | * your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
16 | * NON INFRINGEMENT. See the GNU General Public License for more | |
17 | * details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
3c8c90ab | 23 | * Send comments and feedback to Linas Vepstas <linas@austin.ibm.com> |
77bd7415 LV |
24 | */ |
25 | #include <linux/delay.h> | |
77bd7415 | 26 | #include <linux/interrupt.h> |
ac325acd | 27 | #include <linux/irq.h> |
77bd7415 LV |
28 | #include <linux/pci.h> |
29 | #include <asm/eeh.h> | |
30 | #include <asm/eeh_event.h> | |
31 | #include <asm/ppc-pci.h> | |
32 | #include <asm/pci-bridge.h> | |
33 | #include <asm/prom.h> | |
34 | #include <asm/rtas.h> | |
35 | ||
36 | ||
37 | static inline const char * pcid_name (struct pci_dev *pdev) | |
38 | { | |
273d2803 | 39 | if (pdev && pdev->dev.driver) |
77bd7415 LV |
40 | return pdev->dev.driver->name; |
41 | return ""; | |
42 | } | |
43 | ||
dcfcfe75 | 44 | #if 0 |
8e01520c | 45 | static void print_device_node_tree(struct pci_dn *pdn, int dent) |
77bd7415 LV |
46 | { |
47 | int i; | |
8e01520c AM |
48 | struct device_node *pc; |
49 | ||
50 | if (!pdn) | |
51 | return; | |
52 | for (i = 0; i < dent; i++) | |
77bd7415 LV |
53 | printk(" "); |
54 | printk("dn=%s mode=%x \tcfg_addr=%x pe_addr=%x \tfull=%s\n", | |
55 | pdn->node->name, pdn->eeh_mode, pdn->eeh_config_addr, | |
56 | pdn->eeh_pe_config_addr, pdn->node->full_name); | |
57 | dent += 3; | |
8e01520c | 58 | pc = pdn->node->child; |
77bd7415 LV |
59 | while (pc) { |
60 | print_device_node_tree(PCI_DN(pc), dent); | |
61 | pc = pc->sibling; | |
62 | } | |
63 | } | |
64 | #endif | |
65 | ||
8535ef05 MM |
66 | /** |
67 | * eeh_disable_irq - disable interrupt for the recovering device | |
68 | */ | |
69 | static void eeh_disable_irq(struct pci_dev *dev) | |
70 | { | |
71 | struct device_node *dn = pci_device_to_OF_node(dev); | |
72 | ||
73 | /* Don't disable MSI and MSI-X interrupts. They are | |
74 | * effectively disabled by the DMA Stopped state | |
75 | * when an EEH error occurs. | |
76 | */ | |
77 | if (dev->msi_enabled || dev->msix_enabled) | |
78 | return; | |
79 | ||
59e3f837 | 80 | if (!irq_has_action(dev->irq)) |
8535ef05 MM |
81 | return; |
82 | ||
83 | PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED; | |
84 | disable_irq_nosync(dev->irq); | |
85 | } | |
86 | ||
87 | /** | |
88 | * eeh_enable_irq - enable interrupt for the recovering device | |
89 | */ | |
90 | static void eeh_enable_irq(struct pci_dev *dev) | |
91 | { | |
92 | struct device_node *dn = pci_device_to_OF_node(dev); | |
93 | ||
94 | if ((PCI_DN(dn)->eeh_mode) & EEH_MODE_IRQ_DISABLED) { | |
95 | PCI_DN(dn)->eeh_mode &= ~EEH_MODE_IRQ_DISABLED; | |
96 | enable_irq(dev->irq); | |
97 | } | |
98 | } | |
99 | ||
77bd7415 | 100 | /* ------------------------------------------------------- */ |
cb5b5624 LV |
101 | /** |
102 | * eeh_report_error - report pci error to each device driver | |
103 | * | |
104 | * Report an EEH error to each device driver, collect up and | |
105 | * merge the device driver responses. Cumulative response | |
106 | * passed back in "userdata". | |
77bd7415 LV |
107 | */ |
108 | ||
70298c6e | 109 | static int eeh_report_error(struct pci_dev *dev, void *userdata) |
77bd7415 | 110 | { |
18eb3b39 | 111 | enum pci_ers_result rc, *res = userdata; |
77bd7415 LV |
112 | struct pci_driver *driver = dev->driver; |
113 | ||
114 | dev->error_state = pci_channel_io_frozen; | |
115 | ||
116 | if (!driver) | |
70298c6e | 117 | return 0; |
77bd7415 | 118 | |
8535ef05 MM |
119 | eeh_disable_irq(dev); |
120 | ||
6a1ca373 LV |
121 | if (!driver->err_handler || |
122 | !driver->err_handler->error_detected) | |
70298c6e | 123 | return 0; |
77bd7415 LV |
124 | |
125 | rc = driver->err_handler->error_detected (dev, pci_channel_io_frozen); | |
2a50f144 LV |
126 | |
127 | /* A driver that needs a reset trumps all others */ | |
128 | if (rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; | |
18eb3b39 | 129 | if (*res == PCI_ERS_RESULT_NONE) *res = rc; |
70298c6e ZY |
130 | |
131 | return 0; | |
6a1ca373 LV |
132 | } |
133 | ||
134 | /** | |
135 | * eeh_report_mmio_enabled - tell drivers that MMIO has been enabled | |
136 | * | |
638799b3 LV |
137 | * Tells each device driver that IO ports, MMIO and config space I/O |
138 | * are now enabled. Collects up and merges the device driver responses. | |
139 | * Cumulative response passed back in "userdata". | |
6a1ca373 LV |
140 | */ |
141 | ||
70298c6e | 142 | static int eeh_report_mmio_enabled(struct pci_dev *dev, void *userdata) |
6a1ca373 LV |
143 | { |
144 | enum pci_ers_result rc, *res = userdata; | |
145 | struct pci_driver *driver = dev->driver; | |
146 | ||
6a1ca373 LV |
147 | if (!driver || |
148 | !driver->err_handler || | |
149 | !driver->err_handler->mmio_enabled) | |
70298c6e | 150 | return 0; |
6a1ca373 LV |
151 | |
152 | rc = driver->err_handler->mmio_enabled (dev); | |
2a50f144 LV |
153 | |
154 | /* A driver that needs a reset trumps all others */ | |
155 | if (rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; | |
6a1ca373 | 156 | if (*res == PCI_ERS_RESULT_NONE) *res = rc; |
70298c6e ZY |
157 | |
158 | return 0; | |
77bd7415 LV |
159 | } |
160 | ||
cb5b5624 LV |
161 | /** |
162 | * eeh_report_reset - tell device that slot has been reset | |
77bd7415 LV |
163 | */ |
164 | ||
70298c6e | 165 | static int eeh_report_reset(struct pci_dev *dev, void *userdata) |
77bd7415 | 166 | { |
6a1ca373 | 167 | enum pci_ers_result rc, *res = userdata; |
77bd7415 | 168 | struct pci_driver *driver = dev->driver; |
77bd7415 LV |
169 | |
170 | if (!driver) | |
70298c6e | 171 | return 0; |
77bd7415 | 172 | |
c58dc575 MM |
173 | dev->error_state = pci_channel_io_normal; |
174 | ||
8535ef05 MM |
175 | eeh_enable_irq(dev); |
176 | ||
6a1ca373 LV |
177 | if (!driver->err_handler || |
178 | !driver->err_handler->slot_reset) | |
70298c6e | 179 | return 0; |
77bd7415 | 180 | |
6a1ca373 | 181 | rc = driver->err_handler->slot_reset(dev); |
5794dbcb LV |
182 | if ((*res == PCI_ERS_RESULT_NONE) || |
183 | (*res == PCI_ERS_RESULT_RECOVERED)) *res = rc; | |
6a1ca373 LV |
184 | if (*res == PCI_ERS_RESULT_DISCONNECT && |
185 | rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; | |
70298c6e ZY |
186 | |
187 | return 0; | |
77bd7415 LV |
188 | } |
189 | ||
cb5b5624 LV |
190 | /** |
191 | * eeh_report_resume - tell device to resume normal operations | |
192 | */ | |
193 | ||
70298c6e | 194 | static int eeh_report_resume(struct pci_dev *dev, void *userdata) |
77bd7415 LV |
195 | { |
196 | struct pci_driver *driver = dev->driver; | |
197 | ||
198 | dev->error_state = pci_channel_io_normal; | |
199 | ||
200 | if (!driver) | |
70298c6e | 201 | return 0; |
d0e70341 | 202 | |
8535ef05 MM |
203 | eeh_enable_irq(dev); |
204 | ||
d0e70341 LV |
205 | if (!driver->err_handler || |
206 | !driver->err_handler->resume) | |
70298c6e | 207 | return 0; |
77bd7415 LV |
208 | |
209 | driver->err_handler->resume(dev); | |
70298c6e ZY |
210 | |
211 | return 0; | |
77bd7415 LV |
212 | } |
213 | ||
cb5b5624 LV |
214 | /** |
215 | * eeh_report_failure - tell device driver that device is dead. | |
216 | * | |
217 | * This informs the device driver that the device is permanently | |
218 | * dead, and that no further recovery attempts will be made on it. | |
219 | */ | |
220 | ||
70298c6e | 221 | static int eeh_report_failure(struct pci_dev *dev, void *userdata) |
77bd7415 LV |
222 | { |
223 | struct pci_driver *driver = dev->driver; | |
224 | ||
225 | dev->error_state = pci_channel_io_perm_failure; | |
226 | ||
227 | if (!driver) | |
70298c6e | 228 | return 0; |
77bd7415 | 229 | |
8535ef05 MM |
230 | eeh_disable_irq(dev); |
231 | ||
232 | if (!driver->err_handler || | |
233 | !driver->err_handler->error_detected) | |
70298c6e | 234 | return 0; |
8535ef05 | 235 | |
77bd7415 | 236 | driver->err_handler->error_detected(dev, pci_channel_io_perm_failure); |
70298c6e ZY |
237 | |
238 | return 0; | |
77bd7415 LV |
239 | } |
240 | ||
241 | /* ------------------------------------------------------- */ | |
242 | /** | |
243 | * handle_eeh_events -- reset a PCI device after hard lockup. | |
244 | * | |
245 | * pSeries systems will isolate a PCI slot if the PCI-Host | |
246 | * bridge detects address or data parity errors, DMA's | |
80f7228b | 247 | * occurring to wild addresses (which usually happen due to |
77bd7415 LV |
248 | * bugs in device drivers or in PCI adapter firmware). |
249 | * Slot isolations also occur if #SERR, #PERR or other misc | |
250 | * PCI-related errors are detected. | |
251 | * | |
252 | * Recovery process consists of unplugging the device driver | |
253 | * (which generated hotplug events to userspace), then issuing | |
254 | * a PCI #RST to the device, then reconfiguring the PCI config | |
255 | * space for all bridges & devices under this slot, and then | |
256 | * finally restarting the device drivers (which cause a second | |
257 | * set of hotplug events to go out to userspace). | |
258 | */ | |
259 | ||
260 | /** | |
261 | * eeh_reset_device() -- perform actual reset of a pci slot | |
cb5b5624 | 262 | * @bus: pointer to the pci bus structure corresponding |
77bd7415 LV |
263 | * to the isolated slot. A non-null value will |
264 | * cause all devices under the bus to be removed | |
265 | * and then re-added. | |
cb5b5624 | 266 | * @pe_dn: pointer to a "Partionable Endpoint" device node. |
77bd7415 LV |
267 | * This is the top-level structure on which pci |
268 | * bus resets can be performed. | |
269 | */ | |
270 | ||
b6495c0c | 271 | static int eeh_reset_device (struct pci_dn *pe_dn, struct pci_bus *bus) |
77bd7415 | 272 | { |
4980d5eb | 273 | struct device_node *dn; |
42405456 LV |
274 | int cnt, rc; |
275 | ||
276 | /* pcibios will clear the counter; save the value */ | |
277 | cnt = pe_dn->eeh_freeze_count; | |
278 | ||
77bd7415 LV |
279 | if (bus) |
280 | pcibios_remove_pci_devices(bus); | |
281 | ||
282 | /* Reset the pci controller. (Asserts RST#; resets config space). | |
b6495c0c LV |
283 | * Reconfigure bridges and devices. Don't try to bring the system |
284 | * up if the reset failed for some reason. */ | |
285 | rc = rtas_set_slot_reset(pe_dn); | |
286 | if (rc) | |
287 | return rc; | |
77bd7415 | 288 | |
4980d5eb LV |
289 | /* Walk over all functions on this device. */ |
290 | dn = pe_dn->node; | |
291 | if (!pcibios_find_pci_bus(dn) && PCI_DN(dn->parent)) | |
292 | dn = dn->parent->child; | |
293 | ||
294 | while (dn) { | |
295 | struct pci_dn *ppe = PCI_DN(dn); | |
296 | /* On Power4, always true because eeh_pe_config_addr=0 */ | |
297 | if (pe_dn->eeh_pe_config_addr == ppe->eeh_pe_config_addr) { | |
298 | rtas_configure_bridge(ppe); | |
299 | eeh_restore_bars(ppe); | |
3914ac7b | 300 | } |
4980d5eb LV |
301 | dn = dn->sibling; |
302 | } | |
77bd7415 LV |
303 | |
304 | /* Give the system 5 seconds to finish running the user-space | |
305 | * hotplug shutdown scripts, e.g. ifdown for ethernet. Yes, | |
306 | * this is a hack, but if we don't do this, and try to bring | |
307 | * the device up before the scripts have taken it down, | |
308 | * potentially weird things happen. | |
309 | */ | |
310 | if (bus) { | |
311 | ssleep (5); | |
312 | pcibios_add_pci_devices(bus); | |
313 | } | |
42405456 | 314 | pe_dn->eeh_freeze_count = cnt; |
b6495c0c LV |
315 | |
316 | return 0; | |
77bd7415 LV |
317 | } |
318 | ||
319 | /* The longest amount of time to wait for a pci device | |
320 | * to come back on line, in seconds. | |
321 | */ | |
fa1be476 | 322 | #define MAX_WAIT_FOR_RECOVERY 150 |
77bd7415 | 323 | |
ac325acd | 324 | struct pci_dn * handle_eeh_events (struct eeh_event *event) |
77bd7415 LV |
325 | { |
326 | struct device_node *frozen_dn; | |
327 | struct pci_dn *frozen_pdn; | |
328 | struct pci_bus *frozen_bus; | |
b6495c0c | 329 | int rc = 0; |
18eb3b39 | 330 | enum pci_ers_result result = PCI_ERS_RESULT_NONE; |
0aa8d15b | 331 | const char *location, *pci_str, *drv_str; |
77bd7415 LV |
332 | |
333 | frozen_dn = find_device_pe(event->dn); | |
77bd7415 | 334 | if (!frozen_dn) { |
0aa8d15b | 335 | |
e2eb6392 | 336 | location = of_get_property(event->dn, "ibm,loc-code", NULL); |
0aa8d15b LV |
337 | location = location ? location : "unknown"; |
338 | printk(KERN_ERR "EEH: Error: Cannot find partition endpoint " | |
339 | "for location=%s pci addr=%s\n", | |
8d3d50bf | 340 | location, eeh_pci_name(event->dev)); |
ac325acd | 341 | return NULL; |
77bd7415 | 342 | } |
b76e5e93 SR |
343 | |
344 | frozen_bus = pcibios_find_pci_bus(frozen_dn); | |
e2eb6392 | 345 | location = of_get_property(frozen_dn, "ibm,loc-code", NULL); |
0aa8d15b | 346 | location = location ? location : "unknown"; |
77bd7415 LV |
347 | |
348 | /* There are two different styles for coming up with the PE. | |
349 | * In the old style, it was the highest EEH-capable device | |
350 | * which was always an EADS pci bridge. In the new style, | |
351 | * there might not be any EADS bridges, and even when there are, | |
352 | * the firmware marks them as "EEH incapable". So another | |
353 | * two-step is needed to find the pci bus.. */ | |
354 | if (!frozen_bus) | |
355 | frozen_bus = pcibios_find_pci_bus (frozen_dn->parent); | |
356 | ||
357 | if (!frozen_bus) { | |
0aa8d15b LV |
358 | printk(KERN_ERR "EEH: Cannot find PCI bus " |
359 | "for location=%s dn=%s\n", | |
360 | location, frozen_dn->full_name); | |
ac325acd | 361 | return NULL; |
77bd7415 LV |
362 | } |
363 | ||
77bd7415 LV |
364 | frozen_pdn = PCI_DN(frozen_dn); |
365 | frozen_pdn->eeh_freeze_count++; | |
b4f382a3 | 366 | |
a219be2c LV |
367 | if (frozen_pdn->pcidev) { |
368 | pci_str = pci_name (frozen_pdn->pcidev); | |
369 | drv_str = pcid_name (frozen_pdn->pcidev); | |
370 | } else { | |
8d3d50bf | 371 | pci_str = eeh_pci_name(event->dev); |
b4f382a3 LV |
372 | drv_str = pcid_name (event->dev); |
373 | } | |
77bd7415 LV |
374 | |
375 | if (frozen_pdn->eeh_freeze_count > EEH_MAX_ALLOWED_FREEZES) | |
8df83028 | 376 | goto excess_failures; |
77bd7415 | 377 | |
77bd7415 | 378 | printk(KERN_WARNING |
b455b24c LV |
379 | "EEH: This PCI device has failed %d times in the last hour:\n", |
380 | frozen_pdn->eeh_freeze_count); | |
381 | printk(KERN_WARNING | |
382 | "EEH: location=%s driver=%s pci addr=%s\n", | |
383 | location, drv_str, pci_str); | |
77bd7415 LV |
384 | |
385 | /* Walk the various device drivers attached to this slot through | |
386 | * a reset sequence, giving each an opportunity to do what it needs | |
387 | * to accomplish the reset. Each child gets a report of the | |
388 | * status ... if any child can't handle the reset, then the entire | |
389 | * slot is dlpar removed and added. | |
390 | */ | |
77bd7415 LV |
391 | pci_walk_bus(frozen_bus, eeh_report_error, &result); |
392 | ||
5f1a7c81 LV |
393 | /* Get the current PCI slot state. This can take a long time, |
394 | * sometimes over 3 seconds for certain systems. */ | |
395 | rc = eeh_wait_for_slot_status (frozen_pdn, MAX_WAIT_FOR_RECOVERY*1000); | |
396 | if (rc < 0) { | |
397 | printk(KERN_WARNING "EEH: Permanent failure\n"); | |
398 | goto hard_fail; | |
399 | } | |
400 | ||
ede8ca26 LV |
401 | /* Since rtas may enable MMIO when posting the error log, |
402 | * don't post the error log until after all dev drivers | |
17213c3b LV |
403 | * have been informed. |
404 | */ | |
405 | eeh_slot_error_detail(frozen_pdn, EEH_LOG_TEMP_FAILURE); | |
ede8ca26 | 406 | |
77bd7415 LV |
407 | /* If all device drivers were EEH-unaware, then shut |
408 | * down all of the device drivers, and hope they | |
409 | * go down willingly, without panicing the system. | |
410 | */ | |
18eb3b39 | 411 | if (result == PCI_ERS_RESULT_NONE) { |
b6495c0c | 412 | rc = eeh_reset_device(frozen_pdn, frozen_bus); |
e0f90b64 LV |
413 | if (rc) { |
414 | printk(KERN_WARNING "EEH: Unable to reset, rc=%d\n", rc); | |
b6495c0c | 415 | goto hard_fail; |
e0f90b64 | 416 | } |
77bd7415 LV |
417 | } |
418 | ||
6a1ca373 LV |
419 | /* If all devices reported they can proceed, then re-enable MMIO */ |
420 | if (result == PCI_ERS_RESULT_CAN_RECOVER) { | |
421 | rc = rtas_pci_enable(frozen_pdn, EEH_THAW_MMIO); | |
422 | ||
fa1be476 LV |
423 | if (rc < 0) |
424 | goto hard_fail; | |
6a1ca373 LV |
425 | if (rc) { |
426 | result = PCI_ERS_RESULT_NEED_RESET; | |
427 | } else { | |
428 | result = PCI_ERS_RESULT_NONE; | |
429 | pci_walk_bus(frozen_bus, eeh_report_mmio_enabled, &result); | |
430 | } | |
77bd7415 LV |
431 | } |
432 | ||
6a1ca373 | 433 | /* If all devices reported they can proceed, then re-enable DMA */ |
18eb3b39 | 434 | if (result == PCI_ERS_RESULT_CAN_RECOVER) { |
6a1ca373 LV |
435 | rc = rtas_pci_enable(frozen_pdn, EEH_THAW_DMA); |
436 | ||
fa1be476 LV |
437 | if (rc < 0) |
438 | goto hard_fail; | |
6a1ca373 LV |
439 | if (rc) |
440 | result = PCI_ERS_RESULT_NEED_RESET; | |
d0e70341 LV |
441 | else |
442 | result = PCI_ERS_RESULT_RECOVERED; | |
6a1ca373 LV |
443 | } |
444 | ||
445 | /* If any device has a hard failure, then shut off everything. */ | |
e0f90b64 LV |
446 | if (result == PCI_ERS_RESULT_DISCONNECT) { |
447 | printk(KERN_WARNING "EEH: Device driver gave up\n"); | |
6a1ca373 | 448 | goto hard_fail; |
e0f90b64 | 449 | } |
6a1ca373 LV |
450 | |
451 | /* If any device called out for a reset, then reset the slot */ | |
452 | if (result == PCI_ERS_RESULT_NEED_RESET) { | |
b6495c0c | 453 | rc = eeh_reset_device(frozen_pdn, NULL); |
e0f90b64 LV |
454 | if (rc) { |
455 | printk(KERN_WARNING "EEH: Cannot reset, rc=%d\n", rc); | |
b6495c0c | 456 | goto hard_fail; |
e0f90b64 | 457 | } |
6a1ca373 LV |
458 | result = PCI_ERS_RESULT_NONE; |
459 | pci_walk_bus(frozen_bus, eeh_report_reset, &result); | |
77bd7415 LV |
460 | } |
461 | ||
6a1ca373 | 462 | /* All devices should claim they have recovered by now. */ |
90fdd613 LV |
463 | if ((result != PCI_ERS_RESULT_RECOVERED) && |
464 | (result != PCI_ERS_RESULT_NONE)) { | |
e0f90b64 | 465 | printk(KERN_WARNING "EEH: Not recovered\n"); |
6a1ca373 | 466 | goto hard_fail; |
e0f90b64 | 467 | } |
6a1ca373 | 468 | |
77bd7415 | 469 | /* Tell all device drivers that they can resume operations */ |
d04e4e11 | 470 | pci_walk_bus(frozen_bus, eeh_report_resume, NULL); |
b6495c0c | 471 | |
ac325acd | 472 | return frozen_pdn; |
b6495c0c | 473 | |
8df83028 | 474 | excess_failures: |
b6495c0c LV |
475 | /* |
476 | * About 90% of all real-life EEH failures in the field | |
477 | * are due to poorly seated PCI cards. Only 10% or so are | |
478 | * due to actual, failed cards. | |
479 | */ | |
480 | printk(KERN_ERR | |
8354be9c | 481 | "EEH: PCI device at location=%s driver=%s pci addr=%s\n" |
a885902d | 482 | "has failed %d times in the last hour " |
8354be9c | 483 | "and has been permanently disabled.\n" |
0aa8d15b LV |
484 | "Please try reseating this device or replacing it.\n", |
485 | location, drv_str, pci_str, frozen_pdn->eeh_freeze_count); | |
8df83028 LV |
486 | goto perm_error; |
487 | ||
488 | hard_fail: | |
489 | printk(KERN_ERR | |
0aa8d15b | 490 | "EEH: Unable to recover from failure of PCI device " |
8354be9c | 491 | "at location=%s driver=%s pci addr=%s\n" |
8df83028 | 492 | "Please try reseating this device or replacing it.\n", |
0aa8d15b | 493 | location, drv_str, pci_str); |
b6495c0c | 494 | |
8df83028 | 495 | perm_error: |
17213c3b | 496 | eeh_slot_error_detail(frozen_pdn, EEH_LOG_PERM_FAILURE); |
b6495c0c LV |
497 | |
498 | /* Notify all devices that they're about to go down. */ | |
d04e4e11 | 499 | pci_walk_bus(frozen_bus, eeh_report_failure, NULL); |
b6495c0c LV |
500 | |
501 | /* Shut down the device drivers for good. */ | |
502 | pcibios_remove_pci_devices(frozen_bus); | |
ac325acd LV |
503 | |
504 | return NULL; | |
77bd7415 LV |
505 | } |
506 | ||
507 | /* ---------- end of file ---------- */ |