Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * PCI Express Hot Plug Controller Driver | |
3 | * | |
4 | * Copyright (C) 1995,2001 Compaq Computer Corporation | |
5 | * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) | |
6 | * Copyright (C) 2001 IBM Corp. | |
7 | * Copyright (C) 2003-2004 Intel Corporation | |
8 | * | |
9 | * All rights reserved. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or (at | |
14 | * your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
19 | * NON INFRINGEMENT. See the GNU General Public License for more | |
20 | * details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | * | |
8cf4c195 | 26 | * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> |
1da177e4 LT |
27 | * |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/module.h> |
31 | #include <linux/kernel.h> | |
32 | #include <linux/types.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 LT |
34 | #include <linux/pci.h> |
35 | #include "../pci.h" | |
36 | #include "pciehp.h" | |
1da177e4 | 37 | |
5d386e1a | 38 | static void interrupt_event_handler(struct work_struct *work); |
1da177e4 | 39 | |
4f092fec | 40 | void pciehp_queue_interrupt_event(struct slot *p_slot, u32 event_type) |
49ed2b49 | 41 | { |
5d386e1a KK |
42 | struct event_info *info; |
43 | ||
44 | info = kmalloc(sizeof(*info), GFP_ATOMIC); | |
7d852b68 BH |
45 | if (!info) { |
46 | ctrl_err(p_slot->ctrl, "dropped event %d (ENOMEM)\n", event_type); | |
47 | return; | |
48 | } | |
5d386e1a | 49 | |
7d852b68 | 50 | INIT_WORK(&info->work, interrupt_event_handler); |
5d386e1a KK |
51 | info->event_type = event_type; |
52 | info->p_slot = p_slot; | |
c2be6f93 | 53 | queue_work(p_slot->wq, &info->work); |
49ed2b49 KK |
54 | } |
55 | ||
36ed27b0 | 56 | /* The following routines constitute the bulk of the |
1da177e4 LT |
57 | hotplug controller logic |
58 | */ | |
59 | ||
3c78bc61 | 60 | static void set_slot_off(struct controller *ctrl, struct slot *pslot) |
1da177e4 | 61 | { |
1da177e4 | 62 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
ae416e6b | 63 | if (POWER_CTRL(ctrl)) { |
6dae6202 BH |
64 | pciehp_power_off_slot(pslot); |
65 | ||
c7b4fee3 KK |
66 | /* |
67 | * After turning power off, we must wait for at least 1 second | |
68 | * before taking any action that relies on power having been | |
69 | * removed from the slot/adapter. | |
70 | */ | |
71 | msleep(1000); | |
1da177e4 LT |
72 | } |
73 | ||
af9ab791 BH |
74 | pciehp_green_led_off(pslot); |
75 | pciehp_set_attention_status(pslot, 1); | |
1da177e4 LT |
76 | } |
77 | ||
78 | /** | |
79 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 80 | * @p_slot: &slot where board is added |
1da177e4 | 81 | * |
26e6c66e RD |
82 | * Turns power on for the board. |
83 | * Configures board. | |
1da177e4 | 84 | */ |
ed6cbcf2 | 85 | static int board_added(struct slot *p_slot) |
1da177e4 | 86 | { |
44ef4cef | 87 | int retval = 0; |
ca22a5e4 | 88 | struct controller *ctrl = p_slot->ctrl; |
385e2491 | 89 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
1da177e4 | 90 | |
ae416e6b | 91 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 92 | /* Power on slot */ |
82a9e79e | 93 | retval = pciehp_power_on_slot(p_slot); |
44ef4cef KK |
94 | if (retval) |
95 | return retval; | |
1da177e4 | 96 | } |
36ed27b0 | 97 | |
af9ab791 | 98 | pciehp_green_led_blink(p_slot); |
1da177e4 | 99 | |
44ef4cef | 100 | /* Check link training status */ |
82a9e79e | 101 | retval = pciehp_check_link_status(ctrl); |
44ef4cef | 102 | if (retval) { |
18b341b7 | 103 | ctrl_err(ctrl, "Failed to check link status\n"); |
5651c48c | 104 | goto err_exit; |
1da177e4 LT |
105 | } |
106 | ||
1da177e4 | 107 | /* Check for a power fault */ |
5651c48c KK |
108 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
109 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); | |
d9fb42a8 | 110 | retval = -EIO; |
71b720c0 | 111 | goto err_exit; |
1da177e4 LT |
112 | } |
113 | ||
44ef4cef KK |
114 | retval = pciehp_configure_device(p_slot); |
115 | if (retval) { | |
d689f7eb KK |
116 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
117 | pci_domain_nr(parent), parent->number); | |
50277c8b YW |
118 | if (retval != -EEXIST) |
119 | goto err_exit; | |
71b720c0 | 120 | } |
1da177e4 | 121 | |
af9ab791 | 122 | pciehp_green_led_on(p_slot); |
1da177e4 | 123 | return 0; |
71b720c0 | 124 | |
125 | err_exit: | |
126 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 127 | return retval; |
1da177e4 LT |
128 | } |
129 | ||
1da177e4 | 130 | /** |
26e6c66e RD |
131 | * remove_board - Turns off slot and LEDs |
132 | * @p_slot: slot where board is being removed | |
1da177e4 | 133 | */ |
ed6cbcf2 | 134 | static int remove_board(struct slot *p_slot) |
1da177e4 | 135 | { |
6dae6202 | 136 | int retval; |
ca22a5e4 | 137 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 138 | |
44ef4cef KK |
139 | retval = pciehp_unconfigure_device(p_slot); |
140 | if (retval) | |
141 | return retval; | |
1da177e4 | 142 | |
ae416e6b | 143 | if (POWER_CTRL(ctrl)) { |
6dae6202 BH |
144 | pciehp_power_off_slot(p_slot); |
145 | ||
c7b4fee3 KK |
146 | /* |
147 | * After turning power off, we must wait for at least 1 second | |
148 | * before taking any action that relies on power having been | |
149 | * removed from the slot/adapter. | |
150 | */ | |
151 | msleep(1000); | |
1da177e4 LT |
152 | } |
153 | ||
82a9e79e | 154 | /* turn off Green LED */ |
af9ab791 | 155 | pciehp_green_led_off(p_slot); |
1da177e4 LT |
156 | return 0; |
157 | } | |
158 | ||
5d386e1a KK |
159 | struct power_work_info { |
160 | struct slot *p_slot; | |
161 | struct work_struct work; | |
c4f2f5e4 RJ |
162 | unsigned int req; |
163 | #define DISABLE_REQ 0 | |
164 | #define ENABLE_REQ 1 | |
5d386e1a | 165 | }; |
1da177e4 LT |
166 | |
167 | /** | |
26e6c66e RD |
168 | * pciehp_power_thread - handle pushbutton events |
169 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 170 | * |
26e6c66e | 171 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 172 | * Handles all pending events and exits. |
1da177e4 | 173 | */ |
5d386e1a | 174 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 175 | { |
5d386e1a KK |
176 | struct power_work_info *info = |
177 | container_of(work, struct power_work_info, work); | |
178 | struct slot *p_slot = info->p_slot; | |
50b52fde | 179 | int ret; |
5d386e1a | 180 | |
c4f2f5e4 RJ |
181 | switch (info->req) { |
182 | case DISABLE_REQ: | |
50b52fde | 183 | mutex_lock(&p_slot->hotplug_lock); |
1da177e4 | 184 | pciehp_disable_slot(p_slot); |
50b52fde | 185 | mutex_unlock(&p_slot->hotplug_lock); |
5d386e1a | 186 | mutex_lock(&p_slot->lock); |
1da177e4 | 187 | p_slot->state = STATIC_STATE; |
5d386e1a | 188 | mutex_unlock(&p_slot->lock); |
c4f2f5e4 RJ |
189 | break; |
190 | case ENABLE_REQ: | |
50b52fde RJ |
191 | mutex_lock(&p_slot->hotplug_lock); |
192 | ret = pciehp_enable_slot(p_slot); | |
193 | mutex_unlock(&p_slot->hotplug_lock); | |
194 | if (ret) | |
82a9e79e | 195 | pciehp_green_led_off(p_slot); |
5d386e1a | 196 | mutex_lock(&p_slot->lock); |
1da177e4 | 197 | p_slot->state = STATIC_STATE; |
c4f2f5e4 | 198 | mutex_unlock(&p_slot->lock); |
5d386e1a KK |
199 | break; |
200 | default: | |
201 | break; | |
1da177e4 LT |
202 | } |
203 | ||
5d386e1a | 204 | kfree(info); |
1da177e4 LT |
205 | } |
206 | ||
bee67756 | 207 | static void pciehp_queue_power_work(struct slot *p_slot, int req) |
1da177e4 | 208 | { |
5d386e1a | 209 | struct power_work_info *info; |
1da177e4 | 210 | |
bee67756 GR |
211 | p_slot->state = (req == ENABLE_REQ) ? POWERON_STATE : POWEROFF_STATE; |
212 | ||
5d386e1a KK |
213 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
214 | if (!info) { | |
bee67756 GR |
215 | ctrl_err(p_slot->ctrl, "no memory to queue %s request\n", |
216 | (req == ENABLE_REQ) ? "poweron" : "poweroff"); | |
1da177e4 LT |
217 | return; |
218 | } | |
5d386e1a KK |
219 | info->p_slot = p_slot; |
220 | INIT_WORK(&info->work, pciehp_power_thread); | |
bee67756 GR |
221 | info->req = req; |
222 | queue_work(p_slot->wq, &info->work); | |
223 | } | |
224 | ||
225 | void pciehp_queue_pushbutton_work(struct work_struct *work) | |
226 | { | |
227 | struct slot *p_slot = container_of(work, struct slot, work.work); | |
1da177e4 | 228 | |
5d386e1a KK |
229 | mutex_lock(&p_slot->lock); |
230 | switch (p_slot->state) { | |
231 | case BLINKINGOFF_STATE: | |
bee67756 | 232 | pciehp_queue_power_work(p_slot, DISABLE_REQ); |
5d386e1a KK |
233 | break; |
234 | case BLINKINGON_STATE: | |
bee67756 | 235 | pciehp_queue_power_work(p_slot, ENABLE_REQ); |
5d386e1a KK |
236 | break; |
237 | default: | |
bee67756 | 238 | break; |
1da177e4 | 239 | } |
5d386e1a | 240 | mutex_unlock(&p_slot->lock); |
1da177e4 LT |
241 | } |
242 | ||
5d386e1a KK |
243 | /* |
244 | * Note: This function must be called with slot->lock held | |
245 | */ | |
246 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 247 | { |
5d386e1a | 248 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 249 | u8 getstatus; |
1da177e4 | 250 | |
5d386e1a KK |
251 | switch (p_slot->state) { |
252 | case STATIC_STATE: | |
82a9e79e | 253 | pciehp_get_power_status(p_slot, &getstatus); |
5d386e1a KK |
254 | if (getstatus) { |
255 | p_slot->state = BLINKINGOFF_STATE; | |
227f0647 RD |
256 | ctrl_info(ctrl, "PCI slot #%s - powering off due to button press\n", |
257 | slot_name(p_slot)); | |
5d386e1a KK |
258 | } else { |
259 | p_slot->state = BLINKINGON_STATE; | |
227f0647 RD |
260 | ctrl_info(ctrl, "PCI slot #%s - powering on due to button press\n", |
261 | slot_name(p_slot)); | |
5d386e1a KK |
262 | } |
263 | /* blink green LED and turn off amber */ | |
af9ab791 BH |
264 | pciehp_green_led_blink(p_slot); |
265 | pciehp_set_attention_status(p_slot, 0); | |
c2be6f93 | 266 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
5d386e1a KK |
267 | break; |
268 | case BLINKINGOFF_STATE: | |
269 | case BLINKINGON_STATE: | |
270 | /* | |
271 | * Cancel if we are still blinking; this means that we | |
272 | * press the attention again before the 5 sec. limit | |
273 | * expires to cancel hot-add or hot-remove | |
274 | */ | |
e1acb24f | 275 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 276 | cancel_delayed_work(&p_slot->work); |
9cad7f58 | 277 | if (p_slot->state == BLINKINGOFF_STATE) |
af9ab791 | 278 | pciehp_green_led_on(p_slot); |
9cad7f58 | 279 | else |
af9ab791 | 280 | pciehp_green_led_off(p_slot); |
af9ab791 | 281 | pciehp_set_attention_status(p_slot, 0); |
227f0647 RD |
282 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to button press\n", |
283 | slot_name(p_slot)); | |
5d386e1a KK |
284 | p_slot->state = STATIC_STATE; |
285 | break; | |
286 | case POWEROFF_STATE: | |
287 | case POWERON_STATE: | |
288 | /* | |
289 | * Ignore if the slot is on power-on or power-off state; | |
290 | * this means that the previous attention button action | |
291 | * to hot-add or hot-remove is undergoing | |
292 | */ | |
e1acb24f | 293 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
294 | break; |
295 | default: | |
3784e0c6 | 296 | ctrl_warn(ctrl, "ignoring invalid state %#x\n", p_slot->state); |
5d386e1a | 297 | break; |
1da177e4 LT |
298 | } |
299 | } | |
300 | ||
5d386e1a KK |
301 | /* |
302 | * Note: This function must be called with slot->lock held | |
303 | */ | |
304 | static void handle_surprise_event(struct slot *p_slot) | |
305 | { | |
306 | u8 getstatus; | |
5d386e1a | 307 | |
82a9e79e | 308 | pciehp_get_adapter_status(p_slot, &getstatus); |
bee67756 GR |
309 | if (!getstatus) |
310 | pciehp_queue_power_work(p_slot, DISABLE_REQ); | |
311 | else | |
312 | pciehp_queue_power_work(p_slot, ENABLE_REQ); | |
5d386e1a KK |
313 | } |
314 | ||
e48f1b67 RJ |
315 | /* |
316 | * Note: This function must be called with slot->lock held | |
317 | */ | |
318 | static void handle_link_event(struct slot *p_slot, u32 event) | |
319 | { | |
320 | struct controller *ctrl = p_slot->ctrl; | |
e48f1b67 RJ |
321 | |
322 | switch (p_slot->state) { | |
323 | case BLINKINGON_STATE: | |
324 | case BLINKINGOFF_STATE: | |
325 | cancel_delayed_work(&p_slot->work); | |
326 | /* Fall through */ | |
327 | case STATIC_STATE: | |
bee67756 GR |
328 | pciehp_queue_power_work(p_slot, event == INT_LINK_UP ? |
329 | ENABLE_REQ : DISABLE_REQ); | |
e48f1b67 RJ |
330 | break; |
331 | case POWERON_STATE: | |
332 | if (event == INT_LINK_UP) { | |
333 | ctrl_info(ctrl, | |
334 | "Link Up event ignored on slot(%s): already powering on\n", | |
335 | slot_name(p_slot)); | |
e48f1b67 RJ |
336 | } else { |
337 | ctrl_info(ctrl, | |
338 | "Link Down event queued on slot(%s): currently getting powered on\n", | |
339 | slot_name(p_slot)); | |
bee67756 | 340 | pciehp_queue_power_work(p_slot, DISABLE_REQ); |
e48f1b67 RJ |
341 | } |
342 | break; | |
343 | case POWEROFF_STATE: | |
344 | if (event == INT_LINK_UP) { | |
345 | ctrl_info(ctrl, | |
346 | "Link Up event queued on slot(%s): currently getting powered off\n", | |
347 | slot_name(p_slot)); | |
bee67756 | 348 | pciehp_queue_power_work(p_slot, ENABLE_REQ); |
e48f1b67 RJ |
349 | } else { |
350 | ctrl_info(ctrl, | |
351 | "Link Down event ignored on slot(%s): already powering off\n", | |
352 | slot_name(p_slot)); | |
e48f1b67 RJ |
353 | } |
354 | break; | |
355 | default: | |
3784e0c6 BH |
356 | ctrl_err(ctrl, "ignoring invalid state %#x on slot(%s)\n", |
357 | p_slot->state, slot_name(p_slot)); | |
e48f1b67 RJ |
358 | break; |
359 | } | |
360 | } | |
361 | ||
5d386e1a KK |
362 | static void interrupt_event_handler(struct work_struct *work) |
363 | { | |
364 | struct event_info *info = container_of(work, struct event_info, work); | |
365 | struct slot *p_slot = info->p_slot; | |
366 | struct controller *ctrl = p_slot->ctrl; | |
367 | ||
368 | mutex_lock(&p_slot->lock); | |
369 | switch (info->event_type) { | |
370 | case INT_BUTTON_PRESS: | |
371 | handle_button_press_event(p_slot); | |
372 | break; | |
373 | case INT_POWER_FAULT: | |
ae416e6b | 374 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 375 | break; |
af9ab791 BH |
376 | pciehp_set_attention_status(p_slot, 1); |
377 | pciehp_green_led_off(p_slot); | |
5d386e1a KK |
378 | break; |
379 | case INT_PRESENCE_ON: | |
2b3940b6 RJ |
380 | handle_surprise_event(p_slot); |
381 | break; | |
382 | case INT_PRESENCE_OFF: | |
383 | /* | |
384 | * Regardless of surprise capability, we need to | |
385 | * definitely remove a card that has been pulled out! | |
386 | */ | |
5d386e1a KK |
387 | handle_surprise_event(p_slot); |
388 | break; | |
e48f1b67 RJ |
389 | case INT_LINK_UP: |
390 | case INT_LINK_DOWN: | |
391 | handle_link_event(p_slot, info->event_type); | |
392 | break; | |
5d386e1a | 393 | default: |
5d386e1a KK |
394 | break; |
395 | } | |
396 | mutex_unlock(&p_slot->lock); | |
397 | ||
398 | kfree(info); | |
399 | } | |
400 | ||
50b52fde RJ |
401 | /* |
402 | * Note: This function must be called with slot->hotplug_lock held | |
403 | */ | |
1da177e4 LT |
404 | int pciehp_enable_slot(struct slot *p_slot) |
405 | { | |
406 | u8 getstatus = 0; | |
407 | int rc; | |
7f2feec1 | 408 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 409 | |
6dae6202 BH |
410 | pciehp_get_adapter_status(p_slot, &getstatus); |
411 | if (!getstatus) { | |
18b341b7 | 412 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
c9d86d76 | 413 | return -ENODEV; |
1da177e4 | 414 | } |
ae416e6b | 415 | if (MRL_SENS(p_slot->ctrl)) { |
6dae6202 BH |
416 | pciehp_get_latch_status(p_slot, &getstatus); |
417 | if (getstatus) { | |
18b341b7 TI |
418 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
419 | slot_name(p_slot)); | |
c9d86d76 | 420 | return -ENODEV; |
1da177e4 LT |
421 | } |
422 | } | |
36ed27b0 | 423 | |
ae416e6b | 424 | if (POWER_CTRL(p_slot->ctrl)) { |
6dae6202 BH |
425 | pciehp_get_power_status(p_slot, &getstatus); |
426 | if (getstatus) { | |
18b341b7 TI |
427 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
428 | slot_name(p_slot)); | |
c9d86d76 | 429 | return -EINVAL; |
1da177e4 LT |
430 | } |
431 | } | |
1da177e4 | 432 | |
82a9e79e | 433 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 434 | |
ca22a5e4 | 435 | rc = board_added(p_slot); |
9cad7f58 | 436 | if (rc) |
82a9e79e | 437 | pciehp_get_latch_status(p_slot, &getstatus); |
9cad7f58 | 438 | |
1da177e4 LT |
439 | return rc; |
440 | } | |
441 | ||
50b52fde RJ |
442 | /* |
443 | * Note: This function must be called with slot->hotplug_lock held | |
444 | */ | |
1da177e4 LT |
445 | int pciehp_disable_slot(struct slot *p_slot) |
446 | { | |
1da177e4 | 447 | u8 getstatus = 0; |
7f2feec1 | 448 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
449 | |
450 | if (!p_slot->ctrl) | |
451 | return 1; | |
452 | ||
ae416e6b | 453 | if (POWER_CTRL(p_slot->ctrl)) { |
6dae6202 BH |
454 | pciehp_get_power_status(p_slot, &getstatus); |
455 | if (!getstatus) { | |
18b341b7 TI |
456 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
457 | slot_name(p_slot)); | |
c9d86d76 | 458 | return -EINVAL; |
1da177e4 LT |
459 | } |
460 | } | |
461 | ||
445f7985 | 462 | return remove_board(p_slot); |
1da177e4 LT |
463 | } |
464 | ||
5d386e1a KK |
465 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
466 | { | |
467 | int retval = -ENODEV; | |
7f2feec1 | 468 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
469 | |
470 | mutex_lock(&p_slot->lock); | |
471 | switch (p_slot->state) { | |
472 | case BLINKINGON_STATE: | |
473 | cancel_delayed_work(&p_slot->work); | |
474 | case STATIC_STATE: | |
475 | p_slot->state = POWERON_STATE; | |
476 | mutex_unlock(&p_slot->lock); | |
50b52fde | 477 | mutex_lock(&p_slot->hotplug_lock); |
5d386e1a | 478 | retval = pciehp_enable_slot(p_slot); |
50b52fde | 479 | mutex_unlock(&p_slot->hotplug_lock); |
5d386e1a KK |
480 | mutex_lock(&p_slot->lock); |
481 | p_slot->state = STATIC_STATE; | |
482 | break; | |
483 | case POWERON_STATE: | |
7f2feec1 | 484 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 485 | slot_name(p_slot)); |
5d386e1a KK |
486 | break; |
487 | case BLINKINGOFF_STATE: | |
488 | case POWEROFF_STATE: | |
e1acb24f AC |
489 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
490 | slot_name(p_slot)); | |
5d386e1a KK |
491 | break; |
492 | default: | |
3784e0c6 BH |
493 | ctrl_err(ctrl, "invalid state %#x on slot %s\n", |
494 | p_slot->state, slot_name(p_slot)); | |
5d386e1a KK |
495 | break; |
496 | } | |
497 | mutex_unlock(&p_slot->lock); | |
498 | ||
499 | return retval; | |
500 | } | |
501 | ||
502 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
503 | { | |
504 | int retval = -ENODEV; | |
7f2feec1 | 505 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
506 | |
507 | mutex_lock(&p_slot->lock); | |
508 | switch (p_slot->state) { | |
509 | case BLINKINGOFF_STATE: | |
510 | cancel_delayed_work(&p_slot->work); | |
511 | case STATIC_STATE: | |
512 | p_slot->state = POWEROFF_STATE; | |
513 | mutex_unlock(&p_slot->lock); | |
64609eaa | 514 | mutex_lock(&p_slot->hotplug_lock); |
5d386e1a | 515 | retval = pciehp_disable_slot(p_slot); |
64609eaa | 516 | mutex_unlock(&p_slot->hotplug_lock); |
5d386e1a KK |
517 | mutex_lock(&p_slot->lock); |
518 | p_slot->state = STATIC_STATE; | |
519 | break; | |
520 | case POWEROFF_STATE: | |
7f2feec1 | 521 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 522 | slot_name(p_slot)); |
5d386e1a KK |
523 | break; |
524 | case BLINKINGON_STATE: | |
525 | case POWERON_STATE: | |
e1acb24f AC |
526 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
527 | slot_name(p_slot)); | |
5d386e1a KK |
528 | break; |
529 | default: | |
3784e0c6 BH |
530 | ctrl_err(ctrl, "invalid state %#x on slot %s\n", |
531 | p_slot->state, slot_name(p_slot)); | |
5d386e1a KK |
532 | break; |
533 | } | |
534 | mutex_unlock(&p_slot->lock); | |
535 | ||
536 | return retval; | |
537 | } |