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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> | |
1da177e4 | 33 | #include <linux/pci.h> |
5d386e1a | 34 | #include <linux/workqueue.h> |
1da177e4 LT |
35 | #include "../pci.h" |
36 | #include "pciehp.h" | |
1da177e4 | 37 | |
5d386e1a | 38 | static void interrupt_event_handler(struct work_struct *work); |
1da177e4 | 39 | |
5d386e1a | 40 | static int 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); | |
45 | if (!info) | |
46 | return -ENOMEM; | |
47 | ||
48 | info->event_type = event_type; | |
49 | info->p_slot = p_slot; | |
50 | INIT_WORK(&info->work, interrupt_event_handler); | |
51 | ||
52 | schedule_work(&info->work); | |
53 | ||
54 | return 0; | |
49ed2b49 KK |
55 | } |
56 | ||
dbd79aed | 57 | u8 pciehp_handle_attention_button(struct slot *p_slot) |
1da177e4 | 58 | { |
5d386e1a | 59 | u32 event_type; |
7f2feec1 | 60 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
61 | |
62 | /* Attention Button Change */ | |
18b341b7 | 63 | ctrl_dbg(ctrl, "Attention button interrupt received\n"); |
1da177e4 | 64 | |
1da177e4 LT |
65 | /* |
66 | * Button pressed - See if need to TAKE ACTION!!! | |
67 | */ | |
e1acb24f | 68 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 69 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 70 | |
5d386e1a | 71 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
72 | |
73 | return 0; | |
1da177e4 LT |
74 | } |
75 | ||
dbd79aed | 76 | u8 pciehp_handle_switch_change(struct slot *p_slot) |
1da177e4 | 77 | { |
1da177e4 | 78 | u8 getstatus; |
5d386e1a | 79 | u32 event_type; |
7f2feec1 | 80 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
81 | |
82 | /* Switch Change */ | |
18b341b7 | 83 | ctrl_dbg(ctrl, "Switch interrupt received\n"); |
1da177e4 | 84 | |
82a9e79e | 85 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
86 | if (getstatus) { |
87 | /* | |
88 | * Switch opened | |
89 | */ | |
e1acb24f | 90 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 91 | event_type = INT_SWITCH_OPEN; |
1da177e4 LT |
92 | } else { |
93 | /* | |
94 | * Switch closed | |
95 | */ | |
e1acb24f | 96 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 97 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
98 | } |
99 | ||
5d386e1a | 100 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 101 | |
5d386e1a | 102 | return 1; |
1da177e4 LT |
103 | } |
104 | ||
dbd79aed | 105 | u8 pciehp_handle_presence_change(struct slot *p_slot) |
1da177e4 | 106 | { |
5d386e1a KK |
107 | u32 event_type; |
108 | u8 presence_save; | |
7f2feec1 | 109 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
110 | |
111 | /* Presence Change */ | |
18b341b7 | 112 | ctrl_dbg(ctrl, "Presence/Notify input change\n"); |
1da177e4 | 113 | |
1da177e4 LT |
114 | /* Switch is open, assume a presence change |
115 | * Save the presence state | |
116 | */ | |
82a9e79e | 117 | pciehp_get_adapter_status(p_slot, &presence_save); |
ed6cbcf2 | 118 | if (presence_save) { |
1da177e4 LT |
119 | /* |
120 | * Card Present | |
121 | */ | |
e1acb24f | 122 | ctrl_info(ctrl, "Card present on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 123 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
124 | } else { |
125 | /* | |
126 | * Not Present | |
127 | */ | |
e1acb24f AC |
128 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
129 | slot_name(p_slot)); | |
5d386e1a | 130 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
131 | } |
132 | ||
5d386e1a | 133 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 134 | |
5d386e1a | 135 | return 1; |
1da177e4 LT |
136 | } |
137 | ||
dbd79aed | 138 | u8 pciehp_handle_power_fault(struct slot *p_slot) |
1da177e4 | 139 | { |
5d386e1a | 140 | u32 event_type; |
7f2feec1 | 141 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
142 | |
143 | /* power fault */ | |
18b341b7 | 144 | ctrl_dbg(ctrl, "Power fault interrupt received\n"); |
1da177e4 | 145 | |
82a9e79e | 146 | if (!pciehp_query_power_fault(p_slot)) { |
1da177e4 LT |
147 | /* |
148 | * power fault Cleared | |
149 | */ | |
7f2feec1 | 150 | ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n", |
e1acb24f | 151 | slot_name(p_slot)); |
5d386e1a | 152 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
153 | } else { |
154 | /* | |
155 | * power fault | |
156 | */ | |
e1acb24f | 157 | ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 158 | event_type = INT_POWER_FAULT; |
18b341b7 | 159 | ctrl_info(ctrl, "Power fault bit %x set\n", 0); |
1da177e4 | 160 | } |
1da177e4 | 161 | |
5d386e1a KK |
162 | queue_interrupt_event(p_slot, event_type); |
163 | ||
164 | return 1; | |
1da177e4 LT |
165 | } |
166 | ||
36ed27b0 | 167 | /* The following routines constitute the bulk of the |
1da177e4 LT |
168 | hotplug controller logic |
169 | */ | |
170 | ||
171 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) | |
172 | { | |
1da177e4 | 173 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
ae416e6b | 174 | if (POWER_CTRL(ctrl)) { |
82a9e79e | 175 | if (pciehp_power_off_slot(pslot)) { |
7f2feec1 | 176 | ctrl_err(ctrl, |
18b341b7 | 177 | "Issue of Slot Power Off command failed\n"); |
1da177e4 LT |
178 | return; |
179 | } | |
c7b4fee3 KK |
180 | /* |
181 | * After turning power off, we must wait for at least 1 second | |
182 | * before taking any action that relies on power having been | |
183 | * removed from the slot/adapter. | |
184 | */ | |
185 | msleep(1000); | |
1da177e4 LT |
186 | } |
187 | ||
ae416e6b | 188 | if (PWR_LED(ctrl)) |
82a9e79e | 189 | pciehp_green_led_off(pslot); |
1da177e4 | 190 | |
ae416e6b | 191 | if (ATTN_LED(ctrl)) { |
82a9e79e | 192 | if (pciehp_set_attention_status(pslot, 1)) { |
18b341b7 TI |
193 | ctrl_err(ctrl, |
194 | "Issue of Set Attention Led command failed\n"); | |
1da177e4 LT |
195 | return; |
196 | } | |
1da177e4 | 197 | } |
1da177e4 LT |
198 | } |
199 | ||
200 | /** | |
201 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 202 | * @p_slot: &slot where board is added |
1da177e4 | 203 | * |
26e6c66e RD |
204 | * Turns power on for the board. |
205 | * Configures board. | |
1da177e4 | 206 | */ |
ed6cbcf2 | 207 | static int board_added(struct slot *p_slot) |
1da177e4 | 208 | { |
44ef4cef | 209 | int retval = 0; |
ca22a5e4 | 210 | struct controller *ctrl = p_slot->ctrl; |
385e2491 | 211 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
1da177e4 | 212 | |
ae416e6b | 213 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 214 | /* Power on slot */ |
82a9e79e | 215 | retval = pciehp_power_on_slot(p_slot); |
44ef4cef KK |
216 | if (retval) |
217 | return retval; | |
1da177e4 | 218 | } |
36ed27b0 | 219 | |
ae416e6b | 220 | if (PWR_LED(ctrl)) |
82a9e79e | 221 | pciehp_green_led_blink(p_slot); |
1da177e4 | 222 | |
44ef4cef | 223 | /* Check link training status */ |
82a9e79e | 224 | retval = pciehp_check_link_status(ctrl); |
44ef4cef | 225 | if (retval) { |
18b341b7 | 226 | ctrl_err(ctrl, "Failed to check link status\n"); |
1da177e4 | 227 | set_slot_off(ctrl, p_slot); |
44ef4cef | 228 | return retval; |
1da177e4 LT |
229 | } |
230 | ||
1da177e4 | 231 | /* Check for a power fault */ |
82a9e79e | 232 | if (pciehp_query_power_fault(p_slot)) { |
18b341b7 | 233 | ctrl_dbg(ctrl, "Power fault detected\n"); |
44ef4cef | 234 | retval = POWER_FAILURE; |
71b720c0 | 235 | goto err_exit; |
1da177e4 LT |
236 | } |
237 | ||
44ef4cef KK |
238 | retval = pciehp_configure_device(p_slot); |
239 | if (retval) { | |
d689f7eb KK |
240 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
241 | pci_domain_nr(parent), parent->number); | |
71b720c0 RS |
242 | goto err_exit; |
243 | } | |
1da177e4 | 244 | |
ae416e6b | 245 | if (PWR_LED(ctrl)) |
82a9e79e | 246 | pciehp_green_led_on(p_slot); |
44ef4cef | 247 | |
1da177e4 | 248 | return 0; |
71b720c0 RS |
249 | |
250 | err_exit: | |
251 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 252 | return retval; |
1da177e4 LT |
253 | } |
254 | ||
1da177e4 | 255 | /** |
26e6c66e RD |
256 | * remove_board - Turns off slot and LEDs |
257 | * @p_slot: slot where board is being removed | |
1da177e4 | 258 | */ |
ed6cbcf2 | 259 | static int remove_board(struct slot *p_slot) |
1da177e4 | 260 | { |
44ef4cef | 261 | int retval = 0; |
ca22a5e4 | 262 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 263 | |
44ef4cef KK |
264 | retval = pciehp_unconfigure_device(p_slot); |
265 | if (retval) | |
266 | return retval; | |
1da177e4 | 267 | |
ae416e6b | 268 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 269 | /* power off slot */ |
82a9e79e | 270 | retval = pciehp_power_off_slot(p_slot); |
44ef4cef | 271 | if (retval) { |
18b341b7 TI |
272 | ctrl_err(ctrl, |
273 | "Issue of Slot Disable command failed\n"); | |
44ef4cef | 274 | return retval; |
1da177e4 | 275 | } |
c7b4fee3 KK |
276 | /* |
277 | * After turning power off, we must wait for at least 1 second | |
278 | * before taking any action that relies on power having been | |
279 | * removed from the slot/adapter. | |
280 | */ | |
281 | msleep(1000); | |
1da177e4 LT |
282 | } |
283 | ||
82a9e79e | 284 | /* turn off Green LED */ |
ae416e6b | 285 | if (PWR_LED(ctrl)) |
82a9e79e | 286 | pciehp_green_led_off(p_slot); |
1da177e4 | 287 | |
1da177e4 LT |
288 | return 0; |
289 | } | |
290 | ||
5d386e1a KK |
291 | struct power_work_info { |
292 | struct slot *p_slot; | |
293 | struct work_struct work; | |
294 | }; | |
1da177e4 LT |
295 | |
296 | /** | |
26e6c66e RD |
297 | * pciehp_power_thread - handle pushbutton events |
298 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 299 | * |
26e6c66e | 300 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 301 | * Handles all pending events and exits. |
1da177e4 | 302 | */ |
5d386e1a | 303 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 304 | { |
5d386e1a KK |
305 | struct power_work_info *info = |
306 | container_of(work, struct power_work_info, work); | |
307 | struct slot *p_slot = info->p_slot; | |
308 | ||
309 | mutex_lock(&p_slot->lock); | |
310 | switch (p_slot->state) { | |
311 | case POWEROFF_STATE: | |
312 | mutex_unlock(&p_slot->lock); | |
18b341b7 | 313 | ctrl_dbg(p_slot->ctrl, |
d689f7eb | 314 | "Disabling domain:bus:device=%04x:%02x:00\n", |
385e2491 KK |
315 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
316 | p_slot->ctrl->pcie->port->subordinate->number); | |
1da177e4 | 317 | pciehp_disable_slot(p_slot); |
5d386e1a | 318 | mutex_lock(&p_slot->lock); |
1da177e4 | 319 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
320 | break; |
321 | case POWERON_STATE: | |
322 | mutex_unlock(&p_slot->lock); | |
82a9e79e KK |
323 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl)) |
324 | pciehp_green_led_off(p_slot); | |
5d386e1a | 325 | mutex_lock(&p_slot->lock); |
1da177e4 | 326 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
327 | break; |
328 | default: | |
329 | break; | |
1da177e4 | 330 | } |
5d386e1a | 331 | mutex_unlock(&p_slot->lock); |
1da177e4 | 332 | |
5d386e1a | 333 | kfree(info); |
1da177e4 LT |
334 | } |
335 | ||
e325e1f0 | 336 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
1da177e4 | 337 | { |
5d386e1a KK |
338 | struct slot *p_slot = container_of(work, struct slot, work.work); |
339 | struct power_work_info *info; | |
1da177e4 | 340 | |
5d386e1a KK |
341 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
342 | if (!info) { | |
7f2feec1 TI |
343 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
344 | __func__); | |
1da177e4 LT |
345 | return; |
346 | } | |
5d386e1a KK |
347 | info->p_slot = p_slot; |
348 | INIT_WORK(&info->work, pciehp_power_thread); | |
1da177e4 | 349 | |
5d386e1a KK |
350 | mutex_lock(&p_slot->lock); |
351 | switch (p_slot->state) { | |
352 | case BLINKINGOFF_STATE: | |
1da177e4 | 353 | p_slot->state = POWEROFF_STATE; |
5d386e1a KK |
354 | break; |
355 | case BLINKINGON_STATE: | |
1da177e4 | 356 | p_slot->state = POWERON_STATE; |
5d386e1a KK |
357 | break; |
358 | default: | |
359 | goto out; | |
1da177e4 | 360 | } |
5d386e1a KK |
361 | queue_work(pciehp_wq, &info->work); |
362 | out: | |
363 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
364 | } |
365 | ||
1da177e4 LT |
366 | static int update_slot_info(struct slot *slot) |
367 | { | |
368 | struct hotplug_slot_info *info; | |
1da177e4 LT |
369 | int result; |
370 | ||
5d386e1a | 371 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
1da177e4 LT |
372 | if (!info) |
373 | return -ENOMEM; | |
374 | ||
82a9e79e KK |
375 | pciehp_get_power_status(slot, &info->power_status); |
376 | pciehp_get_attention_status(slot, &info->attention_status); | |
377 | pciehp_get_latch_status(slot, &info->latch_status); | |
378 | pciehp_get_adapter_status(slot, &info->adapter_status); | |
1da177e4 | 379 | |
1da177e4 LT |
380 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
381 | kfree (info); | |
382 | return result; | |
383 | } | |
384 | ||
5d386e1a KK |
385 | /* |
386 | * Note: This function must be called with slot->lock held | |
387 | */ | |
388 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 389 | { |
5d386e1a | 390 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 391 | u8 getstatus; |
1da177e4 | 392 | |
5d386e1a KK |
393 | switch (p_slot->state) { |
394 | case STATIC_STATE: | |
82a9e79e | 395 | pciehp_get_power_status(p_slot, &getstatus); |
5d386e1a KK |
396 | if (getstatus) { |
397 | p_slot->state = BLINKINGOFF_STATE; | |
7f2feec1 TI |
398 | ctrl_info(ctrl, |
399 | "PCI slot #%s - powering off due to button " | |
e1acb24f | 400 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
401 | } else { |
402 | p_slot->state = BLINKINGON_STATE; | |
7f2feec1 TI |
403 | ctrl_info(ctrl, |
404 | "PCI slot #%s - powering on due to button " | |
e1acb24f | 405 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
406 | } |
407 | /* blink green LED and turn off amber */ | |
ae416e6b | 408 | if (PWR_LED(ctrl)) |
82a9e79e | 409 | pciehp_green_led_blink(p_slot); |
ae416e6b | 410 | if (ATTN_LED(ctrl)) |
82a9e79e | 411 | pciehp_set_attention_status(p_slot, 0); |
5d386e1a KK |
412 | |
413 | schedule_delayed_work(&p_slot->work, 5*HZ); | |
414 | break; | |
415 | case BLINKINGOFF_STATE: | |
416 | case BLINKINGON_STATE: | |
417 | /* | |
418 | * Cancel if we are still blinking; this means that we | |
419 | * press the attention again before the 5 sec. limit | |
420 | * expires to cancel hot-add or hot-remove | |
421 | */ | |
e1acb24f | 422 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
423 | cancel_delayed_work(&p_slot->work); |
424 | if (p_slot->state == BLINKINGOFF_STATE) { | |
ae416e6b | 425 | if (PWR_LED(ctrl)) |
82a9e79e | 426 | pciehp_green_led_on(p_slot); |
5d386e1a | 427 | } else { |
ae416e6b | 428 | if (PWR_LED(ctrl)) |
82a9e79e | 429 | pciehp_green_led_off(p_slot); |
5d386e1a | 430 | } |
ae416e6b | 431 | if (ATTN_LED(ctrl)) |
82a9e79e | 432 | pciehp_set_attention_status(p_slot, 0); |
7f2feec1 | 433 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
e1acb24f | 434 | "due to button press\n", slot_name(p_slot)); |
5d386e1a KK |
435 | p_slot->state = STATIC_STATE; |
436 | break; | |
437 | case POWEROFF_STATE: | |
438 | case POWERON_STATE: | |
439 | /* | |
440 | * Ignore if the slot is on power-on or power-off state; | |
441 | * this means that the previous attention button action | |
442 | * to hot-add or hot-remove is undergoing | |
443 | */ | |
e1acb24f | 444 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
445 | update_slot_info(p_slot); |
446 | break; | |
447 | default: | |
7f2feec1 | 448 | ctrl_warn(ctrl, "Not a valid state\n"); |
5d386e1a | 449 | break; |
1da177e4 LT |
450 | } |
451 | } | |
452 | ||
5d386e1a KK |
453 | /* |
454 | * Note: This function must be called with slot->lock held | |
455 | */ | |
456 | static void handle_surprise_event(struct slot *p_slot) | |
457 | { | |
458 | u8 getstatus; | |
459 | struct power_work_info *info; | |
460 | ||
461 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
462 | if (!info) { | |
7f2feec1 TI |
463 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
464 | __func__); | |
5d386e1a KK |
465 | return; |
466 | } | |
467 | info->p_slot = p_slot; | |
468 | INIT_WORK(&info->work, pciehp_power_thread); | |
469 | ||
82a9e79e | 470 | pciehp_get_adapter_status(p_slot, &getstatus); |
5d386e1a KK |
471 | if (!getstatus) |
472 | p_slot->state = POWEROFF_STATE; | |
473 | else | |
474 | p_slot->state = POWERON_STATE; | |
475 | ||
476 | queue_work(pciehp_wq, &info->work); | |
477 | } | |
478 | ||
479 | static void interrupt_event_handler(struct work_struct *work) | |
480 | { | |
481 | struct event_info *info = container_of(work, struct event_info, work); | |
482 | struct slot *p_slot = info->p_slot; | |
483 | struct controller *ctrl = p_slot->ctrl; | |
484 | ||
485 | mutex_lock(&p_slot->lock); | |
486 | switch (info->event_type) { | |
487 | case INT_BUTTON_PRESS: | |
488 | handle_button_press_event(p_slot); | |
489 | break; | |
490 | case INT_POWER_FAULT: | |
ae416e6b | 491 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 492 | break; |
ae416e6b | 493 | if (ATTN_LED(ctrl)) |
82a9e79e | 494 | pciehp_set_attention_status(p_slot, 1); |
ae416e6b | 495 | if (PWR_LED(ctrl)) |
82a9e79e | 496 | pciehp_green_led_off(p_slot); |
5d386e1a KK |
497 | break; |
498 | case INT_PRESENCE_ON: | |
499 | case INT_PRESENCE_OFF: | |
ae416e6b | 500 | if (!HP_SUPR_RM(ctrl)) |
5d386e1a | 501 | break; |
7f2feec1 | 502 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
5d386e1a KK |
503 | update_slot_info(p_slot); |
504 | handle_surprise_event(p_slot); | |
505 | break; | |
506 | default: | |
507 | update_slot_info(p_slot); | |
508 | break; | |
509 | } | |
510 | mutex_unlock(&p_slot->lock); | |
511 | ||
512 | kfree(info); | |
513 | } | |
514 | ||
1da177e4 LT |
515 | int pciehp_enable_slot(struct slot *p_slot) |
516 | { | |
517 | u8 getstatus = 0; | |
518 | int rc; | |
7f2feec1 | 519 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 520 | |
82a9e79e | 521 | rc = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 522 | if (rc || !getstatus) { |
18b341b7 | 523 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
c9d86d76 | 524 | return -ENODEV; |
1da177e4 | 525 | } |
ae416e6b | 526 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 527 | rc = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 528 | if (rc || getstatus) { |
18b341b7 TI |
529 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
530 | slot_name(p_slot)); | |
c9d86d76 | 531 | return -ENODEV; |
1da177e4 LT |
532 | } |
533 | } | |
36ed27b0 | 534 | |
ae416e6b | 535 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 536 | rc = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 537 | if (rc || getstatus) { |
18b341b7 TI |
538 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
539 | slot_name(p_slot)); | |
c9d86d76 | 540 | return -EINVAL; |
1da177e4 LT |
541 | } |
542 | } | |
1da177e4 | 543 | |
82a9e79e | 544 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 545 | |
ca22a5e4 | 546 | rc = board_added(p_slot); |
1da177e4 | 547 | if (rc) { |
82a9e79e | 548 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
549 | } |
550 | ||
9ef9977c | 551 | update_slot_info(p_slot); |
1da177e4 LT |
552 | |
553 | return rc; | |
554 | } | |
555 | ||
556 | ||
557 | int pciehp_disable_slot(struct slot *p_slot) | |
558 | { | |
1da177e4 | 559 | u8 getstatus = 0; |
1da177e4 | 560 | int ret = 0; |
7f2feec1 | 561 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
562 | |
563 | if (!p_slot->ctrl) | |
564 | return 1; | |
565 | ||
ae416e6b | 566 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
82a9e79e | 567 | ret = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 568 | if (ret || !getstatus) { |
18b341b7 TI |
569 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
570 | slot_name(p_slot)); | |
c9d86d76 | 571 | return -ENODEV; |
1da177e4 LT |
572 | } |
573 | } | |
574 | ||
ae416e6b | 575 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 576 | ret = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 577 | if (ret || getstatus) { |
18b341b7 TI |
578 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
579 | slot_name(p_slot)); | |
c9d86d76 | 580 | return -ENODEV; |
1da177e4 LT |
581 | } |
582 | } | |
583 | ||
ae416e6b | 584 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 585 | ret = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 586 | if (ret || !getstatus) { |
18b341b7 TI |
587 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
588 | slot_name(p_slot)); | |
c9d86d76 | 589 | return -EINVAL; |
1da177e4 LT |
590 | } |
591 | } | |
592 | ||
ca22a5e4 RS |
593 | ret = remove_board(p_slot); |
594 | update_slot_info(p_slot); | |
dd5619cb | 595 | |
ca22a5e4 | 596 | return ret; |
1da177e4 LT |
597 | } |
598 | ||
5d386e1a KK |
599 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
600 | { | |
601 | int retval = -ENODEV; | |
7f2feec1 | 602 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
603 | |
604 | mutex_lock(&p_slot->lock); | |
605 | switch (p_slot->state) { | |
606 | case BLINKINGON_STATE: | |
607 | cancel_delayed_work(&p_slot->work); | |
608 | case STATIC_STATE: | |
609 | p_slot->state = POWERON_STATE; | |
610 | mutex_unlock(&p_slot->lock); | |
611 | retval = pciehp_enable_slot(p_slot); | |
612 | mutex_lock(&p_slot->lock); | |
613 | p_slot->state = STATIC_STATE; | |
614 | break; | |
615 | case POWERON_STATE: | |
7f2feec1 | 616 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 617 | slot_name(p_slot)); |
5d386e1a KK |
618 | break; |
619 | case BLINKINGOFF_STATE: | |
620 | case POWEROFF_STATE: | |
e1acb24f AC |
621 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
622 | slot_name(p_slot)); | |
5d386e1a KK |
623 | break; |
624 | default: | |
e1acb24f AC |
625 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
626 | slot_name(p_slot)); | |
5d386e1a KK |
627 | break; |
628 | } | |
629 | mutex_unlock(&p_slot->lock); | |
630 | ||
631 | return retval; | |
632 | } | |
633 | ||
634 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
635 | { | |
636 | int retval = -ENODEV; | |
7f2feec1 | 637 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
638 | |
639 | mutex_lock(&p_slot->lock); | |
640 | switch (p_slot->state) { | |
641 | case BLINKINGOFF_STATE: | |
642 | cancel_delayed_work(&p_slot->work); | |
643 | case STATIC_STATE: | |
644 | p_slot->state = POWEROFF_STATE; | |
645 | mutex_unlock(&p_slot->lock); | |
646 | retval = pciehp_disable_slot(p_slot); | |
647 | mutex_lock(&p_slot->lock); | |
648 | p_slot->state = STATIC_STATE; | |
649 | break; | |
650 | case POWEROFF_STATE: | |
7f2feec1 | 651 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 652 | slot_name(p_slot)); |
5d386e1a KK |
653 | break; |
654 | case BLINKINGON_STATE: | |
655 | case POWERON_STATE: | |
e1acb24f AC |
656 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
657 | slot_name(p_slot)); | |
5d386e1a KK |
658 | break; |
659 | default: | |
e1acb24f AC |
660 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
661 | slot_name(p_slot)); | |
5d386e1a KK |
662 | break; |
663 | } | |
664 | mutex_unlock(&p_slot->lock); | |
665 | ||
666 | return retval; | |
667 | } |