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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 | 34 | #include <linux/pci.h> |
5d386e1a | 35 | #include <linux/workqueue.h> |
1da177e4 LT |
36 | #include "../pci.h" |
37 | #include "pciehp.h" | |
1da177e4 | 38 | |
5d386e1a | 39 | static void interrupt_event_handler(struct work_struct *work); |
1da177e4 | 40 | |
5d386e1a | 41 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
49ed2b49 | 42 | { |
5d386e1a KK |
43 | struct event_info *info; |
44 | ||
45 | info = kmalloc(sizeof(*info), GFP_ATOMIC); | |
46 | if (!info) | |
47 | return -ENOMEM; | |
48 | ||
49 | info->event_type = event_type; | |
50 | info->p_slot = p_slot; | |
51 | INIT_WORK(&info->work, interrupt_event_handler); | |
52 | ||
53 | schedule_work(&info->work); | |
54 | ||
55 | return 0; | |
49ed2b49 KK |
56 | } |
57 | ||
dbd79aed | 58 | u8 pciehp_handle_attention_button(struct slot *p_slot) |
1da177e4 | 59 | { |
5d386e1a | 60 | u32 event_type; |
7f2feec1 | 61 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
62 | |
63 | /* Attention Button Change */ | |
18b341b7 | 64 | ctrl_dbg(ctrl, "Attention button interrupt received\n"); |
1da177e4 | 65 | |
1da177e4 LT |
66 | /* |
67 | * Button pressed - See if need to TAKE ACTION!!! | |
68 | */ | |
e1acb24f | 69 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 70 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 71 | |
5d386e1a | 72 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
73 | |
74 | return 0; | |
1da177e4 LT |
75 | } |
76 | ||
dbd79aed | 77 | u8 pciehp_handle_switch_change(struct slot *p_slot) |
1da177e4 | 78 | { |
1da177e4 | 79 | u8 getstatus; |
5d386e1a | 80 | u32 event_type; |
7f2feec1 | 81 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
82 | |
83 | /* Switch Change */ | |
18b341b7 | 84 | ctrl_dbg(ctrl, "Switch interrupt received\n"); |
1da177e4 | 85 | |
82a9e79e | 86 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
87 | if (getstatus) { |
88 | /* | |
89 | * Switch opened | |
90 | */ | |
e1acb24f | 91 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 92 | event_type = INT_SWITCH_OPEN; |
1da177e4 LT |
93 | } else { |
94 | /* | |
95 | * Switch closed | |
96 | */ | |
e1acb24f | 97 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 98 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
99 | } |
100 | ||
5d386e1a | 101 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 102 | |
5d386e1a | 103 | return 1; |
1da177e4 LT |
104 | } |
105 | ||
dbd79aed | 106 | u8 pciehp_handle_presence_change(struct slot *p_slot) |
1da177e4 | 107 | { |
5d386e1a KK |
108 | u32 event_type; |
109 | u8 presence_save; | |
7f2feec1 | 110 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
111 | |
112 | /* Presence Change */ | |
18b341b7 | 113 | ctrl_dbg(ctrl, "Presence/Notify input change\n"); |
1da177e4 | 114 | |
1da177e4 LT |
115 | /* Switch is open, assume a presence change |
116 | * Save the presence state | |
117 | */ | |
82a9e79e | 118 | pciehp_get_adapter_status(p_slot, &presence_save); |
ed6cbcf2 | 119 | if (presence_save) { |
1da177e4 LT |
120 | /* |
121 | * Card Present | |
122 | */ | |
e1acb24f | 123 | ctrl_info(ctrl, "Card present on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 124 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
125 | } else { |
126 | /* | |
127 | * Not Present | |
128 | */ | |
e1acb24f AC |
129 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
130 | slot_name(p_slot)); | |
5d386e1a | 131 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
132 | } |
133 | ||
5d386e1a | 134 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 135 | |
5d386e1a | 136 | return 1; |
1da177e4 LT |
137 | } |
138 | ||
dbd79aed | 139 | u8 pciehp_handle_power_fault(struct slot *p_slot) |
1da177e4 | 140 | { |
5d386e1a | 141 | u32 event_type; |
7f2feec1 | 142 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
143 | |
144 | /* power fault */ | |
18b341b7 | 145 | ctrl_dbg(ctrl, "Power fault interrupt received\n"); |
5651c48c KK |
146 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); |
147 | event_type = INT_POWER_FAULT; | |
148 | ctrl_info(ctrl, "Power fault bit %x set\n", 0); | |
5d386e1a KK |
149 | queue_interrupt_event(p_slot, event_type); |
150 | ||
151 | return 1; | |
1da177e4 LT |
152 | } |
153 | ||
36ed27b0 | 154 | /* The following routines constitute the bulk of the |
1da177e4 LT |
155 | hotplug controller logic |
156 | */ | |
157 | ||
158 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) | |
159 | { | |
1da177e4 | 160 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
ae416e6b | 161 | if (POWER_CTRL(ctrl)) { |
82a9e79e | 162 | if (pciehp_power_off_slot(pslot)) { |
7f2feec1 | 163 | ctrl_err(ctrl, |
18b341b7 | 164 | "Issue of Slot Power Off command failed\n"); |
1da177e4 LT |
165 | return; |
166 | } | |
c7b4fee3 KK |
167 | /* |
168 | * After turning power off, we must wait for at least 1 second | |
169 | * before taking any action that relies on power having been | |
170 | * removed from the slot/adapter. | |
171 | */ | |
172 | msleep(1000); | |
1da177e4 LT |
173 | } |
174 | ||
ae416e6b | 175 | if (PWR_LED(ctrl)) |
82a9e79e | 176 | pciehp_green_led_off(pslot); |
1da177e4 | 177 | |
ae416e6b | 178 | if (ATTN_LED(ctrl)) { |
82a9e79e | 179 | if (pciehp_set_attention_status(pslot, 1)) { |
18b341b7 TI |
180 | ctrl_err(ctrl, |
181 | "Issue of Set Attention Led command failed\n"); | |
1da177e4 LT |
182 | return; |
183 | } | |
1da177e4 | 184 | } |
1da177e4 LT |
185 | } |
186 | ||
187 | /** | |
188 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 189 | * @p_slot: &slot where board is added |
1da177e4 | 190 | * |
26e6c66e RD |
191 | * Turns power on for the board. |
192 | * Configures board. | |
1da177e4 | 193 | */ |
ed6cbcf2 | 194 | static int board_added(struct slot *p_slot) |
1da177e4 | 195 | { |
44ef4cef | 196 | int retval = 0; |
ca22a5e4 | 197 | struct controller *ctrl = p_slot->ctrl; |
385e2491 | 198 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
1da177e4 | 199 | |
ae416e6b | 200 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 201 | /* Power on slot */ |
82a9e79e | 202 | retval = pciehp_power_on_slot(p_slot); |
44ef4cef KK |
203 | if (retval) |
204 | return retval; | |
1da177e4 | 205 | } |
36ed27b0 | 206 | |
ae416e6b | 207 | if (PWR_LED(ctrl)) |
82a9e79e | 208 | pciehp_green_led_blink(p_slot); |
1da177e4 | 209 | |
44ef4cef | 210 | /* Check link training status */ |
82a9e79e | 211 | retval = pciehp_check_link_status(ctrl); |
44ef4cef | 212 | if (retval) { |
18b341b7 | 213 | ctrl_err(ctrl, "Failed to check link status\n"); |
5651c48c | 214 | goto err_exit; |
1da177e4 LT |
215 | } |
216 | ||
1da177e4 | 217 | /* Check for a power fault */ |
5651c48c KK |
218 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
219 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); | |
d9fb42a8 | 220 | retval = -EIO; |
71b720c0 | 221 | goto err_exit; |
1da177e4 LT |
222 | } |
223 | ||
44ef4cef KK |
224 | retval = pciehp_configure_device(p_slot); |
225 | if (retval) { | |
d689f7eb KK |
226 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
227 | pci_domain_nr(parent), parent->number); | |
71b720c0 RS |
228 | goto err_exit; |
229 | } | |
1da177e4 | 230 | |
ae416e6b | 231 | if (PWR_LED(ctrl)) |
82a9e79e | 232 | pciehp_green_led_on(p_slot); |
44ef4cef | 233 | |
1da177e4 | 234 | return 0; |
71b720c0 RS |
235 | |
236 | err_exit: | |
237 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 238 | return retval; |
1da177e4 LT |
239 | } |
240 | ||
1da177e4 | 241 | /** |
26e6c66e RD |
242 | * remove_board - Turns off slot and LEDs |
243 | * @p_slot: slot where board is being removed | |
1da177e4 | 244 | */ |
ed6cbcf2 | 245 | static int remove_board(struct slot *p_slot) |
1da177e4 | 246 | { |
44ef4cef | 247 | int retval = 0; |
ca22a5e4 | 248 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 249 | |
44ef4cef KK |
250 | retval = pciehp_unconfigure_device(p_slot); |
251 | if (retval) | |
252 | return retval; | |
1da177e4 | 253 | |
ae416e6b | 254 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 255 | /* power off slot */ |
82a9e79e | 256 | retval = pciehp_power_off_slot(p_slot); |
44ef4cef | 257 | if (retval) { |
18b341b7 TI |
258 | ctrl_err(ctrl, |
259 | "Issue of Slot Disable command failed\n"); | |
44ef4cef | 260 | return retval; |
1da177e4 | 261 | } |
c7b4fee3 KK |
262 | /* |
263 | * After turning power off, we must wait for at least 1 second | |
264 | * before taking any action that relies on power having been | |
265 | * removed from the slot/adapter. | |
266 | */ | |
267 | msleep(1000); | |
1da177e4 LT |
268 | } |
269 | ||
82a9e79e | 270 | /* turn off Green LED */ |
ae416e6b | 271 | if (PWR_LED(ctrl)) |
82a9e79e | 272 | pciehp_green_led_off(p_slot); |
1da177e4 | 273 | |
1da177e4 LT |
274 | return 0; |
275 | } | |
276 | ||
5d386e1a KK |
277 | struct power_work_info { |
278 | struct slot *p_slot; | |
279 | struct work_struct work; | |
280 | }; | |
1da177e4 LT |
281 | |
282 | /** | |
26e6c66e RD |
283 | * pciehp_power_thread - handle pushbutton events |
284 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 285 | * |
26e6c66e | 286 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 287 | * Handles all pending events and exits. |
1da177e4 | 288 | */ |
5d386e1a | 289 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 290 | { |
5d386e1a KK |
291 | struct power_work_info *info = |
292 | container_of(work, struct power_work_info, work); | |
293 | struct slot *p_slot = info->p_slot; | |
294 | ||
295 | mutex_lock(&p_slot->lock); | |
296 | switch (p_slot->state) { | |
297 | case POWEROFF_STATE: | |
298 | mutex_unlock(&p_slot->lock); | |
18b341b7 | 299 | ctrl_dbg(p_slot->ctrl, |
d689f7eb | 300 | "Disabling domain:bus:device=%04x:%02x:00\n", |
385e2491 KK |
301 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
302 | p_slot->ctrl->pcie->port->subordinate->number); | |
1da177e4 | 303 | pciehp_disable_slot(p_slot); |
5d386e1a | 304 | mutex_lock(&p_slot->lock); |
1da177e4 | 305 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
306 | break; |
307 | case POWERON_STATE: | |
308 | mutex_unlock(&p_slot->lock); | |
82a9e79e KK |
309 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl)) |
310 | pciehp_green_led_off(p_slot); | |
5d386e1a | 311 | mutex_lock(&p_slot->lock); |
1da177e4 | 312 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
313 | break; |
314 | default: | |
315 | break; | |
1da177e4 | 316 | } |
5d386e1a | 317 | mutex_unlock(&p_slot->lock); |
1da177e4 | 318 | |
5d386e1a | 319 | kfree(info); |
1da177e4 LT |
320 | } |
321 | ||
e325e1f0 | 322 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
1da177e4 | 323 | { |
5d386e1a KK |
324 | struct slot *p_slot = container_of(work, struct slot, work.work); |
325 | struct power_work_info *info; | |
1da177e4 | 326 | |
5d386e1a KK |
327 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
328 | if (!info) { | |
7f2feec1 TI |
329 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
330 | __func__); | |
1da177e4 LT |
331 | return; |
332 | } | |
5d386e1a KK |
333 | info->p_slot = p_slot; |
334 | INIT_WORK(&info->work, pciehp_power_thread); | |
1da177e4 | 335 | |
5d386e1a KK |
336 | mutex_lock(&p_slot->lock); |
337 | switch (p_slot->state) { | |
338 | case BLINKINGOFF_STATE: | |
1da177e4 | 339 | p_slot->state = POWEROFF_STATE; |
5d386e1a KK |
340 | break; |
341 | case BLINKINGON_STATE: | |
1da177e4 | 342 | p_slot->state = POWERON_STATE; |
5d386e1a KK |
343 | break; |
344 | default: | |
6fcaf17a | 345 | kfree(info); |
5d386e1a | 346 | goto out; |
1da177e4 | 347 | } |
5d386e1a KK |
348 | queue_work(pciehp_wq, &info->work); |
349 | out: | |
350 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
351 | } |
352 | ||
5d386e1a KK |
353 | /* |
354 | * Note: This function must be called with slot->lock held | |
355 | */ | |
356 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 357 | { |
5d386e1a | 358 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 359 | u8 getstatus; |
1da177e4 | 360 | |
5d386e1a KK |
361 | switch (p_slot->state) { |
362 | case STATIC_STATE: | |
82a9e79e | 363 | pciehp_get_power_status(p_slot, &getstatus); |
5d386e1a KK |
364 | if (getstatus) { |
365 | p_slot->state = BLINKINGOFF_STATE; | |
7f2feec1 TI |
366 | ctrl_info(ctrl, |
367 | "PCI slot #%s - powering off due to button " | |
e1acb24f | 368 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
369 | } else { |
370 | p_slot->state = BLINKINGON_STATE; | |
7f2feec1 TI |
371 | ctrl_info(ctrl, |
372 | "PCI slot #%s - powering on due to button " | |
e1acb24f | 373 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
374 | } |
375 | /* blink green LED and turn off amber */ | |
ae416e6b | 376 | if (PWR_LED(ctrl)) |
82a9e79e | 377 | pciehp_green_led_blink(p_slot); |
ae416e6b | 378 | if (ATTN_LED(ctrl)) |
82a9e79e | 379 | pciehp_set_attention_status(p_slot, 0); |
5d386e1a KK |
380 | |
381 | schedule_delayed_work(&p_slot->work, 5*HZ); | |
382 | break; | |
383 | case BLINKINGOFF_STATE: | |
384 | case BLINKINGON_STATE: | |
385 | /* | |
386 | * Cancel if we are still blinking; this means that we | |
387 | * press the attention again before the 5 sec. limit | |
388 | * expires to cancel hot-add or hot-remove | |
389 | */ | |
e1acb24f | 390 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
391 | cancel_delayed_work(&p_slot->work); |
392 | if (p_slot->state == BLINKINGOFF_STATE) { | |
ae416e6b | 393 | if (PWR_LED(ctrl)) |
82a9e79e | 394 | pciehp_green_led_on(p_slot); |
5d386e1a | 395 | } else { |
ae416e6b | 396 | if (PWR_LED(ctrl)) |
82a9e79e | 397 | pciehp_green_led_off(p_slot); |
5d386e1a | 398 | } |
ae416e6b | 399 | if (ATTN_LED(ctrl)) |
82a9e79e | 400 | pciehp_set_attention_status(p_slot, 0); |
7f2feec1 | 401 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
e1acb24f | 402 | "due to button press\n", slot_name(p_slot)); |
5d386e1a KK |
403 | p_slot->state = STATIC_STATE; |
404 | break; | |
405 | case POWEROFF_STATE: | |
406 | case POWERON_STATE: | |
407 | /* | |
408 | * Ignore if the slot is on power-on or power-off state; | |
409 | * this means that the previous attention button action | |
410 | * to hot-add or hot-remove is undergoing | |
411 | */ | |
e1acb24f | 412 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
413 | break; |
414 | default: | |
7f2feec1 | 415 | ctrl_warn(ctrl, "Not a valid state\n"); |
5d386e1a | 416 | break; |
1da177e4 LT |
417 | } |
418 | } | |
419 | ||
5d386e1a KK |
420 | /* |
421 | * Note: This function must be called with slot->lock held | |
422 | */ | |
423 | static void handle_surprise_event(struct slot *p_slot) | |
424 | { | |
425 | u8 getstatus; | |
426 | struct power_work_info *info; | |
427 | ||
428 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
429 | if (!info) { | |
7f2feec1 TI |
430 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
431 | __func__); | |
5d386e1a KK |
432 | return; |
433 | } | |
434 | info->p_slot = p_slot; | |
435 | INIT_WORK(&info->work, pciehp_power_thread); | |
436 | ||
82a9e79e | 437 | pciehp_get_adapter_status(p_slot, &getstatus); |
5d386e1a KK |
438 | if (!getstatus) |
439 | p_slot->state = POWEROFF_STATE; | |
440 | else | |
441 | p_slot->state = POWERON_STATE; | |
442 | ||
443 | queue_work(pciehp_wq, &info->work); | |
444 | } | |
445 | ||
446 | static void interrupt_event_handler(struct work_struct *work) | |
447 | { | |
448 | struct event_info *info = container_of(work, struct event_info, work); | |
449 | struct slot *p_slot = info->p_slot; | |
450 | struct controller *ctrl = p_slot->ctrl; | |
451 | ||
452 | mutex_lock(&p_slot->lock); | |
453 | switch (info->event_type) { | |
454 | case INT_BUTTON_PRESS: | |
455 | handle_button_press_event(p_slot); | |
456 | break; | |
457 | case INT_POWER_FAULT: | |
ae416e6b | 458 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 459 | break; |
ae416e6b | 460 | if (ATTN_LED(ctrl)) |
82a9e79e | 461 | pciehp_set_attention_status(p_slot, 1); |
ae416e6b | 462 | if (PWR_LED(ctrl)) |
82a9e79e | 463 | pciehp_green_led_off(p_slot); |
5d386e1a KK |
464 | break; |
465 | case INT_PRESENCE_ON: | |
466 | case INT_PRESENCE_OFF: | |
ae416e6b | 467 | if (!HP_SUPR_RM(ctrl)) |
5d386e1a | 468 | break; |
7f2feec1 | 469 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
5d386e1a KK |
470 | handle_surprise_event(p_slot); |
471 | break; | |
472 | default: | |
5d386e1a KK |
473 | break; |
474 | } | |
475 | mutex_unlock(&p_slot->lock); | |
476 | ||
477 | kfree(info); | |
478 | } | |
479 | ||
1da177e4 LT |
480 | int pciehp_enable_slot(struct slot *p_slot) |
481 | { | |
482 | u8 getstatus = 0; | |
483 | int rc; | |
7f2feec1 | 484 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 485 | |
82a9e79e | 486 | rc = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 487 | if (rc || !getstatus) { |
18b341b7 | 488 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
c9d86d76 | 489 | return -ENODEV; |
1da177e4 | 490 | } |
ae416e6b | 491 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 492 | rc = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 493 | if (rc || getstatus) { |
18b341b7 TI |
494 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
495 | slot_name(p_slot)); | |
c9d86d76 | 496 | return -ENODEV; |
1da177e4 LT |
497 | } |
498 | } | |
36ed27b0 | 499 | |
ae416e6b | 500 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 501 | rc = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 502 | if (rc || getstatus) { |
18b341b7 TI |
503 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
504 | slot_name(p_slot)); | |
c9d86d76 | 505 | return -EINVAL; |
1da177e4 LT |
506 | } |
507 | } | |
1da177e4 | 508 | |
82a9e79e | 509 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 510 | |
ca22a5e4 | 511 | rc = board_added(p_slot); |
1da177e4 | 512 | if (rc) { |
82a9e79e | 513 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 514 | } |
1da177e4 LT |
515 | return rc; |
516 | } | |
517 | ||
518 | ||
519 | int pciehp_disable_slot(struct slot *p_slot) | |
520 | { | |
1da177e4 | 521 | u8 getstatus = 0; |
1da177e4 | 522 | int ret = 0; |
7f2feec1 | 523 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
524 | |
525 | if (!p_slot->ctrl) | |
526 | return 1; | |
527 | ||
ae416e6b | 528 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
82a9e79e | 529 | ret = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 530 | if (ret || !getstatus) { |
18b341b7 TI |
531 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
532 | slot_name(p_slot)); | |
c9d86d76 | 533 | return -ENODEV; |
1da177e4 LT |
534 | } |
535 | } | |
536 | ||
ae416e6b | 537 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 538 | ret = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 539 | if (ret || getstatus) { |
18b341b7 TI |
540 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
541 | slot_name(p_slot)); | |
c9d86d76 | 542 | return -ENODEV; |
1da177e4 LT |
543 | } |
544 | } | |
545 | ||
ae416e6b | 546 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 547 | ret = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 548 | if (ret || !getstatus) { |
18b341b7 TI |
549 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
550 | slot_name(p_slot)); | |
c9d86d76 | 551 | return -EINVAL; |
1da177e4 LT |
552 | } |
553 | } | |
554 | ||
445f7985 | 555 | return remove_board(p_slot); |
1da177e4 LT |
556 | } |
557 | ||
5d386e1a KK |
558 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
559 | { | |
560 | int retval = -ENODEV; | |
7f2feec1 | 561 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
562 | |
563 | mutex_lock(&p_slot->lock); | |
564 | switch (p_slot->state) { | |
565 | case BLINKINGON_STATE: | |
566 | cancel_delayed_work(&p_slot->work); | |
567 | case STATIC_STATE: | |
568 | p_slot->state = POWERON_STATE; | |
569 | mutex_unlock(&p_slot->lock); | |
570 | retval = pciehp_enable_slot(p_slot); | |
571 | mutex_lock(&p_slot->lock); | |
572 | p_slot->state = STATIC_STATE; | |
573 | break; | |
574 | case POWERON_STATE: | |
7f2feec1 | 575 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 576 | slot_name(p_slot)); |
5d386e1a KK |
577 | break; |
578 | case BLINKINGOFF_STATE: | |
579 | case POWEROFF_STATE: | |
e1acb24f AC |
580 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
581 | slot_name(p_slot)); | |
5d386e1a KK |
582 | break; |
583 | default: | |
e1acb24f AC |
584 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
585 | slot_name(p_slot)); | |
5d386e1a KK |
586 | break; |
587 | } | |
588 | mutex_unlock(&p_slot->lock); | |
589 | ||
590 | return retval; | |
591 | } | |
592 | ||
593 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
594 | { | |
595 | int retval = -ENODEV; | |
7f2feec1 | 596 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
597 | |
598 | mutex_lock(&p_slot->lock); | |
599 | switch (p_slot->state) { | |
600 | case BLINKINGOFF_STATE: | |
601 | cancel_delayed_work(&p_slot->work); | |
602 | case STATIC_STATE: | |
603 | p_slot->state = POWEROFF_STATE; | |
604 | mutex_unlock(&p_slot->lock); | |
605 | retval = pciehp_disable_slot(p_slot); | |
606 | mutex_lock(&p_slot->lock); | |
607 | p_slot->state = STATIC_STATE; | |
608 | break; | |
609 | case POWEROFF_STATE: | |
7f2feec1 | 610 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 611 | slot_name(p_slot)); |
5d386e1a KK |
612 | break; |
613 | case BLINKINGON_STATE: | |
614 | case POWERON_STATE: | |
e1acb24f AC |
615 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
616 | slot_name(p_slot)); | |
5d386e1a KK |
617 | break; |
618 | default: | |
e1acb24f AC |
619 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
620 | slot_name(p_slot)); | |
5d386e1a KK |
621 | break; |
622 | } | |
623 | mutex_unlock(&p_slot->lock); | |
624 | ||
625 | return retval; | |
626 | } |