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 | |
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 | ||
c2be6f93 | 52 | queue_work(p_slot->wq, &info->work); |
5d386e1a KK |
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"); |
5651c48c KK |
145 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); |
146 | event_type = INT_POWER_FAULT; | |
147 | ctrl_info(ctrl, "Power fault bit %x set\n", 0); | |
5d386e1a KK |
148 | queue_interrupt_event(p_slot, event_type); |
149 | ||
150 | return 1; | |
1da177e4 LT |
151 | } |
152 | ||
36ed27b0 | 153 | /* The following routines constitute the bulk of the |
1da177e4 LT |
154 | hotplug controller logic |
155 | */ | |
156 | ||
157 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) | |
158 | { | |
1da177e4 | 159 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
ae416e6b | 160 | if (POWER_CTRL(ctrl)) { |
82a9e79e | 161 | if (pciehp_power_off_slot(pslot)) { |
7f2feec1 | 162 | ctrl_err(ctrl, |
18b341b7 | 163 | "Issue of Slot Power Off command failed\n"); |
1da177e4 LT |
164 | return; |
165 | } | |
c7b4fee3 KK |
166 | /* |
167 | * After turning power off, we must wait for at least 1 second | |
168 | * before taking any action that relies on power having been | |
169 | * removed from the slot/adapter. | |
170 | */ | |
171 | msleep(1000); | |
1da177e4 LT |
172 | } |
173 | ||
ae416e6b | 174 | if (PWR_LED(ctrl)) |
82a9e79e | 175 | pciehp_green_led_off(pslot); |
1da177e4 | 176 | |
ae416e6b | 177 | if (ATTN_LED(ctrl)) { |
82a9e79e | 178 | if (pciehp_set_attention_status(pslot, 1)) { |
18b341b7 TI |
179 | ctrl_err(ctrl, |
180 | "Issue of Set Attention Led command failed\n"); | |
1da177e4 LT |
181 | return; |
182 | } | |
1da177e4 | 183 | } |
1da177e4 LT |
184 | } |
185 | ||
186 | /** | |
187 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 188 | * @p_slot: &slot where board is added |
1da177e4 | 189 | * |
26e6c66e RD |
190 | * Turns power on for the board. |
191 | * Configures board. | |
1da177e4 | 192 | */ |
ed6cbcf2 | 193 | static int board_added(struct slot *p_slot) |
1da177e4 | 194 | { |
44ef4cef | 195 | int retval = 0; |
ca22a5e4 | 196 | struct controller *ctrl = p_slot->ctrl; |
385e2491 | 197 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
1da177e4 | 198 | |
ae416e6b | 199 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 200 | /* Power on slot */ |
82a9e79e | 201 | retval = pciehp_power_on_slot(p_slot); |
44ef4cef KK |
202 | if (retval) |
203 | return retval; | |
1da177e4 | 204 | } |
36ed27b0 | 205 | |
ae416e6b | 206 | if (PWR_LED(ctrl)) |
82a9e79e | 207 | pciehp_green_led_blink(p_slot); |
1da177e4 | 208 | |
44ef4cef | 209 | /* Check link training status */ |
82a9e79e | 210 | retval = pciehp_check_link_status(ctrl); |
44ef4cef | 211 | if (retval) { |
18b341b7 | 212 | ctrl_err(ctrl, "Failed to check link status\n"); |
5651c48c | 213 | goto err_exit; |
1da177e4 LT |
214 | } |
215 | ||
1da177e4 | 216 | /* Check for a power fault */ |
5651c48c KK |
217 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
218 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); | |
d9fb42a8 | 219 | retval = -EIO; |
71b720c0 | 220 | goto err_exit; |
1da177e4 LT |
221 | } |
222 | ||
44ef4cef KK |
223 | retval = pciehp_configure_device(p_slot); |
224 | if (retval) { | |
d689f7eb KK |
225 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
226 | pci_domain_nr(parent), parent->number); | |
71b720c0 RS |
227 | goto err_exit; |
228 | } | |
1da177e4 | 229 | |
ae416e6b | 230 | if (PWR_LED(ctrl)) |
82a9e79e | 231 | pciehp_green_led_on(p_slot); |
44ef4cef | 232 | |
1da177e4 | 233 | return 0; |
71b720c0 RS |
234 | |
235 | err_exit: | |
236 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 237 | return retval; |
1da177e4 LT |
238 | } |
239 | ||
1da177e4 | 240 | /** |
26e6c66e RD |
241 | * remove_board - Turns off slot and LEDs |
242 | * @p_slot: slot where board is being removed | |
1da177e4 | 243 | */ |
ed6cbcf2 | 244 | static int remove_board(struct slot *p_slot) |
1da177e4 | 245 | { |
44ef4cef | 246 | int retval = 0; |
ca22a5e4 | 247 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 248 | |
44ef4cef KK |
249 | retval = pciehp_unconfigure_device(p_slot); |
250 | if (retval) | |
251 | return retval; | |
1da177e4 | 252 | |
ae416e6b | 253 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 254 | /* power off slot */ |
82a9e79e | 255 | retval = pciehp_power_off_slot(p_slot); |
44ef4cef | 256 | if (retval) { |
18b341b7 TI |
257 | ctrl_err(ctrl, |
258 | "Issue of Slot Disable command failed\n"); | |
44ef4cef | 259 | return retval; |
1da177e4 | 260 | } |
c7b4fee3 KK |
261 | /* |
262 | * After turning power off, we must wait for at least 1 second | |
263 | * before taking any action that relies on power having been | |
264 | * removed from the slot/adapter. | |
265 | */ | |
266 | msleep(1000); | |
1da177e4 LT |
267 | } |
268 | ||
82a9e79e | 269 | /* turn off Green LED */ |
ae416e6b | 270 | if (PWR_LED(ctrl)) |
82a9e79e | 271 | pciehp_green_led_off(p_slot); |
1da177e4 | 272 | |
1da177e4 LT |
273 | return 0; |
274 | } | |
275 | ||
5d386e1a KK |
276 | struct power_work_info { |
277 | struct slot *p_slot; | |
278 | struct work_struct work; | |
279 | }; | |
1da177e4 LT |
280 | |
281 | /** | |
26e6c66e RD |
282 | * pciehp_power_thread - handle pushbutton events |
283 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 284 | * |
26e6c66e | 285 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 286 | * Handles all pending events and exits. |
1da177e4 | 287 | */ |
5d386e1a | 288 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 289 | { |
5d386e1a KK |
290 | struct power_work_info *info = |
291 | container_of(work, struct power_work_info, work); | |
292 | struct slot *p_slot = info->p_slot; | |
293 | ||
294 | mutex_lock(&p_slot->lock); | |
295 | switch (p_slot->state) { | |
296 | case POWEROFF_STATE: | |
297 | mutex_unlock(&p_slot->lock); | |
18b341b7 | 298 | ctrl_dbg(p_slot->ctrl, |
d689f7eb | 299 | "Disabling domain:bus:device=%04x:%02x:00\n", |
385e2491 KK |
300 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
301 | p_slot->ctrl->pcie->port->subordinate->number); | |
1da177e4 | 302 | pciehp_disable_slot(p_slot); |
5d386e1a | 303 | mutex_lock(&p_slot->lock); |
1da177e4 | 304 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
305 | break; |
306 | case POWERON_STATE: | |
307 | mutex_unlock(&p_slot->lock); | |
82a9e79e KK |
308 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl)) |
309 | pciehp_green_led_off(p_slot); | |
5d386e1a | 310 | mutex_lock(&p_slot->lock); |
1da177e4 | 311 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
312 | break; |
313 | default: | |
314 | break; | |
1da177e4 | 315 | } |
5d386e1a | 316 | mutex_unlock(&p_slot->lock); |
1da177e4 | 317 | |
5d386e1a | 318 | kfree(info); |
1da177e4 LT |
319 | } |
320 | ||
e325e1f0 | 321 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
1da177e4 | 322 | { |
5d386e1a KK |
323 | struct slot *p_slot = container_of(work, struct slot, work.work); |
324 | struct power_work_info *info; | |
1da177e4 | 325 | |
5d386e1a KK |
326 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
327 | if (!info) { | |
7f2feec1 TI |
328 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
329 | __func__); | |
1da177e4 LT |
330 | return; |
331 | } | |
5d386e1a KK |
332 | info->p_slot = p_slot; |
333 | INIT_WORK(&info->work, pciehp_power_thread); | |
1da177e4 | 334 | |
5d386e1a KK |
335 | mutex_lock(&p_slot->lock); |
336 | switch (p_slot->state) { | |
337 | case BLINKINGOFF_STATE: | |
1da177e4 | 338 | p_slot->state = POWEROFF_STATE; |
5d386e1a KK |
339 | break; |
340 | case BLINKINGON_STATE: | |
1da177e4 | 341 | p_slot->state = POWERON_STATE; |
5d386e1a KK |
342 | break; |
343 | default: | |
6fcaf17a | 344 | kfree(info); |
5d386e1a | 345 | goto out; |
1da177e4 | 346 | } |
c2be6f93 | 347 | queue_work(p_slot->wq, &info->work); |
5d386e1a KK |
348 | out: |
349 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
350 | } |
351 | ||
5d386e1a KK |
352 | /* |
353 | * Note: This function must be called with slot->lock held | |
354 | */ | |
355 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 356 | { |
5d386e1a | 357 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 358 | u8 getstatus; |
1da177e4 | 359 | |
5d386e1a KK |
360 | switch (p_slot->state) { |
361 | case STATIC_STATE: | |
82a9e79e | 362 | pciehp_get_power_status(p_slot, &getstatus); |
5d386e1a KK |
363 | if (getstatus) { |
364 | p_slot->state = BLINKINGOFF_STATE; | |
7f2feec1 TI |
365 | ctrl_info(ctrl, |
366 | "PCI slot #%s - powering off due to button " | |
e1acb24f | 367 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
368 | } else { |
369 | p_slot->state = BLINKINGON_STATE; | |
7f2feec1 TI |
370 | ctrl_info(ctrl, |
371 | "PCI slot #%s - powering on due to button " | |
e1acb24f | 372 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
373 | } |
374 | /* blink green LED and turn off amber */ | |
ae416e6b | 375 | if (PWR_LED(ctrl)) |
82a9e79e | 376 | pciehp_green_led_blink(p_slot); |
ae416e6b | 377 | if (ATTN_LED(ctrl)) |
82a9e79e | 378 | pciehp_set_attention_status(p_slot, 0); |
5d386e1a | 379 | |
c2be6f93 | 380 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
5d386e1a KK |
381 | break; |
382 | case BLINKINGOFF_STATE: | |
383 | case BLINKINGON_STATE: | |
384 | /* | |
385 | * Cancel if we are still blinking; this means that we | |
386 | * press the attention again before the 5 sec. limit | |
387 | * expires to cancel hot-add or hot-remove | |
388 | */ | |
e1acb24f | 389 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
390 | cancel_delayed_work(&p_slot->work); |
391 | if (p_slot->state == BLINKINGOFF_STATE) { | |
ae416e6b | 392 | if (PWR_LED(ctrl)) |
82a9e79e | 393 | pciehp_green_led_on(p_slot); |
5d386e1a | 394 | } else { |
ae416e6b | 395 | if (PWR_LED(ctrl)) |
82a9e79e | 396 | pciehp_green_led_off(p_slot); |
5d386e1a | 397 | } |
ae416e6b | 398 | if (ATTN_LED(ctrl)) |
82a9e79e | 399 | pciehp_set_attention_status(p_slot, 0); |
7f2feec1 | 400 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
e1acb24f | 401 | "due to button press\n", slot_name(p_slot)); |
5d386e1a KK |
402 | p_slot->state = STATIC_STATE; |
403 | break; | |
404 | case POWEROFF_STATE: | |
405 | case POWERON_STATE: | |
406 | /* | |
407 | * Ignore if the slot is on power-on or power-off state; | |
408 | * this means that the previous attention button action | |
409 | * to hot-add or hot-remove is undergoing | |
410 | */ | |
e1acb24f | 411 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
412 | break; |
413 | default: | |
7f2feec1 | 414 | ctrl_warn(ctrl, "Not a valid state\n"); |
5d386e1a | 415 | break; |
1da177e4 LT |
416 | } |
417 | } | |
418 | ||
5d386e1a KK |
419 | /* |
420 | * Note: This function must be called with slot->lock held | |
421 | */ | |
422 | static void handle_surprise_event(struct slot *p_slot) | |
423 | { | |
424 | u8 getstatus; | |
425 | struct power_work_info *info; | |
426 | ||
427 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
428 | if (!info) { | |
7f2feec1 TI |
429 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
430 | __func__); | |
5d386e1a KK |
431 | return; |
432 | } | |
433 | info->p_slot = p_slot; | |
434 | INIT_WORK(&info->work, pciehp_power_thread); | |
435 | ||
82a9e79e | 436 | pciehp_get_adapter_status(p_slot, &getstatus); |
5d386e1a KK |
437 | if (!getstatus) |
438 | p_slot->state = POWEROFF_STATE; | |
439 | else | |
440 | p_slot->state = POWERON_STATE; | |
441 | ||
c2be6f93 | 442 | queue_work(p_slot->wq, &info->work); |
5d386e1a KK |
443 | } |
444 | ||
445 | static void interrupt_event_handler(struct work_struct *work) | |
446 | { | |
447 | struct event_info *info = container_of(work, struct event_info, work); | |
448 | struct slot *p_slot = info->p_slot; | |
449 | struct controller *ctrl = p_slot->ctrl; | |
450 | ||
451 | mutex_lock(&p_slot->lock); | |
452 | switch (info->event_type) { | |
453 | case INT_BUTTON_PRESS: | |
454 | handle_button_press_event(p_slot); | |
455 | break; | |
456 | case INT_POWER_FAULT: | |
ae416e6b | 457 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 458 | break; |
ae416e6b | 459 | if (ATTN_LED(ctrl)) |
82a9e79e | 460 | pciehp_set_attention_status(p_slot, 1); |
ae416e6b | 461 | if (PWR_LED(ctrl)) |
82a9e79e | 462 | pciehp_green_led_off(p_slot); |
5d386e1a KK |
463 | break; |
464 | case INT_PRESENCE_ON: | |
465 | case INT_PRESENCE_OFF: | |
ae416e6b | 466 | if (!HP_SUPR_RM(ctrl)) |
5d386e1a | 467 | break; |
7f2feec1 | 468 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
5d386e1a KK |
469 | handle_surprise_event(p_slot); |
470 | break; | |
471 | default: | |
5d386e1a KK |
472 | break; |
473 | } | |
474 | mutex_unlock(&p_slot->lock); | |
475 | ||
476 | kfree(info); | |
477 | } | |
478 | ||
1da177e4 LT |
479 | int pciehp_enable_slot(struct slot *p_slot) |
480 | { | |
481 | u8 getstatus = 0; | |
482 | int rc; | |
7f2feec1 | 483 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 484 | |
82a9e79e | 485 | rc = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 486 | if (rc || !getstatus) { |
18b341b7 | 487 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
c9d86d76 | 488 | return -ENODEV; |
1da177e4 | 489 | } |
ae416e6b | 490 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 491 | rc = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 492 | if (rc || getstatus) { |
18b341b7 TI |
493 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
494 | slot_name(p_slot)); | |
c9d86d76 | 495 | return -ENODEV; |
1da177e4 LT |
496 | } |
497 | } | |
36ed27b0 | 498 | |
ae416e6b | 499 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 500 | rc = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 501 | if (rc || getstatus) { |
18b341b7 TI |
502 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
503 | slot_name(p_slot)); | |
c9d86d76 | 504 | return -EINVAL; |
1da177e4 LT |
505 | } |
506 | } | |
1da177e4 | 507 | |
82a9e79e | 508 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 509 | |
ca22a5e4 | 510 | rc = board_added(p_slot); |
1da177e4 | 511 | if (rc) { |
82a9e79e | 512 | pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 513 | } |
1da177e4 LT |
514 | return rc; |
515 | } | |
516 | ||
517 | ||
518 | int pciehp_disable_slot(struct slot *p_slot) | |
519 | { | |
1da177e4 | 520 | u8 getstatus = 0; |
1da177e4 | 521 | int ret = 0; |
7f2feec1 | 522 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
523 | |
524 | if (!p_slot->ctrl) | |
525 | return 1; | |
526 | ||
ae416e6b | 527 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
82a9e79e | 528 | ret = pciehp_get_adapter_status(p_slot, &getstatus); |
1da177e4 | 529 | if (ret || !getstatus) { |
18b341b7 TI |
530 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
531 | slot_name(p_slot)); | |
c9d86d76 | 532 | return -ENODEV; |
1da177e4 LT |
533 | } |
534 | } | |
535 | ||
ae416e6b | 536 | if (MRL_SENS(p_slot->ctrl)) { |
82a9e79e | 537 | ret = pciehp_get_latch_status(p_slot, &getstatus); |
1da177e4 | 538 | if (ret || getstatus) { |
18b341b7 TI |
539 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
540 | slot_name(p_slot)); | |
c9d86d76 | 541 | return -ENODEV; |
1da177e4 LT |
542 | } |
543 | } | |
544 | ||
ae416e6b | 545 | if (POWER_CTRL(p_slot->ctrl)) { |
82a9e79e | 546 | ret = pciehp_get_power_status(p_slot, &getstatus); |
1da177e4 | 547 | if (ret || !getstatus) { |
18b341b7 TI |
548 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
549 | slot_name(p_slot)); | |
c9d86d76 | 550 | return -EINVAL; |
1da177e4 LT |
551 | } |
552 | } | |
553 | ||
445f7985 | 554 | return remove_board(p_slot); |
1da177e4 LT |
555 | } |
556 | ||
5d386e1a KK |
557 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
558 | { | |
559 | int retval = -ENODEV; | |
7f2feec1 | 560 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
561 | |
562 | mutex_lock(&p_slot->lock); | |
563 | switch (p_slot->state) { | |
564 | case BLINKINGON_STATE: | |
565 | cancel_delayed_work(&p_slot->work); | |
566 | case STATIC_STATE: | |
567 | p_slot->state = POWERON_STATE; | |
568 | mutex_unlock(&p_slot->lock); | |
569 | retval = pciehp_enable_slot(p_slot); | |
570 | mutex_lock(&p_slot->lock); | |
571 | p_slot->state = STATIC_STATE; | |
572 | break; | |
573 | case POWERON_STATE: | |
7f2feec1 | 574 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 575 | slot_name(p_slot)); |
5d386e1a KK |
576 | break; |
577 | case BLINKINGOFF_STATE: | |
578 | case POWEROFF_STATE: | |
e1acb24f AC |
579 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
580 | slot_name(p_slot)); | |
5d386e1a KK |
581 | break; |
582 | default: | |
e1acb24f AC |
583 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
584 | slot_name(p_slot)); | |
5d386e1a KK |
585 | break; |
586 | } | |
587 | mutex_unlock(&p_slot->lock); | |
588 | ||
589 | return retval; | |
590 | } | |
591 | ||
592 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
593 | { | |
594 | int retval = -ENODEV; | |
7f2feec1 | 595 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
596 | |
597 | mutex_lock(&p_slot->lock); | |
598 | switch (p_slot->state) { | |
599 | case BLINKINGOFF_STATE: | |
600 | cancel_delayed_work(&p_slot->work); | |
601 | case STATIC_STATE: | |
602 | p_slot->state = POWEROFF_STATE; | |
603 | mutex_unlock(&p_slot->lock); | |
604 | retval = pciehp_disable_slot(p_slot); | |
605 | mutex_lock(&p_slot->lock); | |
606 | p_slot->state = STATIC_STATE; | |
607 | break; | |
608 | case POWEROFF_STATE: | |
7f2feec1 | 609 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 610 | slot_name(p_slot)); |
5d386e1a KK |
611 | break; |
612 | case BLINKINGON_STATE: | |
613 | case POWERON_STATE: | |
e1acb24f AC |
614 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
615 | slot_name(p_slot)); | |
5d386e1a KK |
616 | break; |
617 | default: | |
e1acb24f AC |
618 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
619 | slot_name(p_slot)); | |
5d386e1a KK |
620 | break; |
621 | } | |
622 | mutex_unlock(&p_slot->lock); | |
623 | ||
624 | return retval; | |
625 | } |