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 LT |
33 | #include <linux/smp_lock.h> |
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 | |
1da177e4 | 86 | p_slot->hpc_ops->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 | */ | |
ed6cbcf2 | 118 | p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save); |
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"); |
1da177e4 | 146 | |
1da177e4 LT |
147 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { |
148 | /* | |
149 | * power fault Cleared | |
150 | */ | |
7f2feec1 | 151 | ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n", |
e1acb24f | 152 | slot_name(p_slot)); |
5d386e1a | 153 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
154 | } else { |
155 | /* | |
156 | * power fault | |
157 | */ | |
e1acb24f | 158 | ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a | 159 | event_type = INT_POWER_FAULT; |
18b341b7 | 160 | ctrl_info(ctrl, "Power fault bit %x set\n", 0); |
1da177e4 | 161 | } |
1da177e4 | 162 | |
5d386e1a KK |
163 | queue_interrupt_event(p_slot, event_type); |
164 | ||
165 | return 1; | |
1da177e4 LT |
166 | } |
167 | ||
36ed27b0 | 168 | /* The following routines constitute the bulk of the |
1da177e4 LT |
169 | hotplug controller logic |
170 | */ | |
171 | ||
172 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) | |
173 | { | |
1da177e4 | 174 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
ae416e6b | 175 | if (POWER_CTRL(ctrl)) { |
36ed27b0 | 176 | if (pslot->hpc_ops->power_off_slot(pslot)) { |
7f2feec1 | 177 | ctrl_err(ctrl, |
18b341b7 | 178 | "Issue of Slot Power Off command failed\n"); |
1da177e4 LT |
179 | return; |
180 | } | |
1da177e4 LT |
181 | } |
182 | ||
0711c70e KK |
183 | /* |
184 | * After turning power off, we must wait for at least 1 second | |
185 | * before taking any action that relies on power having been | |
186 | * removed from the slot/adapter. | |
187 | */ | |
188 | msleep(1000); | |
189 | ||
ae416e6b | 190 | if (PWR_LED(ctrl)) |
36ed27b0 | 191 | pslot->hpc_ops->green_led_off(pslot); |
1da177e4 | 192 | |
ae416e6b | 193 | if (ATTN_LED(ctrl)) { |
44ef4cef | 194 | if (pslot->hpc_ops->set_attention_status(pslot, 1)) { |
18b341b7 TI |
195 | ctrl_err(ctrl, |
196 | "Issue of Set Attention Led command failed\n"); | |
1da177e4 LT |
197 | return; |
198 | } | |
1da177e4 | 199 | } |
1da177e4 LT |
200 | } |
201 | ||
202 | /** | |
203 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 204 | * @p_slot: &slot where board is added |
1da177e4 | 205 | * |
26e6c66e RD |
206 | * Turns power on for the board. |
207 | * Configures board. | |
1da177e4 | 208 | */ |
ed6cbcf2 | 209 | static int board_added(struct slot *p_slot) |
1da177e4 | 210 | { |
44ef4cef | 211 | int retval = 0; |
ca22a5e4 | 212 | struct controller *ctrl = p_slot->ctrl; |
18b341b7 | 213 | struct pci_bus *parent = ctrl->pci_dev->subordinate; |
1da177e4 | 214 | |
18b341b7 | 215 | ctrl_dbg(ctrl, "%s: slot device, slot offset, hp slot = %d, %d, %d\n", |
7f2feec1 TI |
216 | __func__, p_slot->device, ctrl->slot_device_offset, |
217 | p_slot->hp_slot); | |
1da177e4 | 218 | |
ae416e6b | 219 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 220 | /* Power on slot */ |
44ef4cef KK |
221 | retval = p_slot->hpc_ops->power_on_slot(p_slot); |
222 | if (retval) | |
223 | return retval; | |
1da177e4 | 224 | } |
36ed27b0 | 225 | |
ae416e6b | 226 | if (PWR_LED(ctrl)) |
1da177e4 | 227 | p_slot->hpc_ops->green_led_blink(p_slot); |
1da177e4 | 228 | |
44ef4cef KK |
229 | /* Check link training status */ |
230 | retval = p_slot->hpc_ops->check_lnk_status(ctrl); | |
231 | if (retval) { | |
18b341b7 | 232 | ctrl_err(ctrl, "Failed to check link status\n"); |
1da177e4 | 233 | set_slot_off(ctrl, p_slot); |
44ef4cef | 234 | return retval; |
1da177e4 LT |
235 | } |
236 | ||
1da177e4 | 237 | /* Check for a power fault */ |
5a49f203 | 238 | if (p_slot->hpc_ops->query_power_fault(p_slot)) { |
18b341b7 | 239 | ctrl_dbg(ctrl, "Power fault detected\n"); |
44ef4cef | 240 | retval = POWER_FAILURE; |
71b720c0 | 241 | goto err_exit; |
1da177e4 LT |
242 | } |
243 | ||
44ef4cef KK |
244 | retval = pciehp_configure_device(p_slot); |
245 | if (retval) { | |
18b341b7 TI |
246 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
247 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
71b720c0 | 248 | goto err_exit; |
249 | } | |
1da177e4 | 250 | |
71b720c0 | 251 | /* |
252 | * Some PCI Express root ports require fixup after hot-plug operation. | |
253 | */ | |
254 | if (pcie_mch_quirk) | |
255 | pci_fixup_device(pci_fixup_final, ctrl->pci_dev); | |
ae416e6b | 256 | if (PWR_LED(ctrl)) |
71b720c0 | 257 | p_slot->hpc_ops->green_led_on(p_slot); |
44ef4cef | 258 | |
1da177e4 | 259 | return 0; |
71b720c0 | 260 | |
261 | err_exit: | |
262 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 263 | return retval; |
1da177e4 LT |
264 | } |
265 | ||
1da177e4 | 266 | /** |
26e6c66e RD |
267 | * remove_board - Turns off slot and LEDs |
268 | * @p_slot: slot where board is being removed | |
1da177e4 | 269 | */ |
ed6cbcf2 | 270 | static int remove_board(struct slot *p_slot) |
1da177e4 | 271 | { |
44ef4cef | 272 | int retval = 0; |
ca22a5e4 | 273 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 274 | |
44ef4cef KK |
275 | retval = pciehp_unconfigure_device(p_slot); |
276 | if (retval) | |
277 | return retval; | |
1da177e4 | 278 | |
18b341b7 | 279 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, p_slot->hp_slot); |
1da177e4 | 280 | |
ae416e6b | 281 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 282 | /* power off slot */ |
44ef4cef KK |
283 | retval = p_slot->hpc_ops->power_off_slot(p_slot); |
284 | if (retval) { | |
18b341b7 TI |
285 | ctrl_err(ctrl, |
286 | "Issue of Slot Disable command failed\n"); | |
44ef4cef | 287 | return retval; |
1da177e4 | 288 | } |
1da177e4 LT |
289 | } |
290 | ||
0711c70e KK |
291 | /* |
292 | * After turning power off, we must wait for at least 1 second | |
293 | * before taking any action that relies on power having been | |
294 | * removed from the slot/adapter. | |
295 | */ | |
296 | msleep(1000); | |
297 | ||
ae416e6b | 298 | if (PWR_LED(ctrl)) |
1da177e4 LT |
299 | /* turn off Green LED */ |
300 | p_slot->hpc_ops->green_led_off(p_slot); | |
1da177e4 | 301 | |
1da177e4 LT |
302 | return 0; |
303 | } | |
304 | ||
5d386e1a KK |
305 | struct power_work_info { |
306 | struct slot *p_slot; | |
307 | struct work_struct work; | |
308 | }; | |
1da177e4 LT |
309 | |
310 | /** | |
26e6c66e RD |
311 | * pciehp_power_thread - handle pushbutton events |
312 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 313 | * |
26e6c66e | 314 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 315 | * Handles all pending events and exits. |
1da177e4 | 316 | */ |
5d386e1a | 317 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 318 | { |
5d386e1a KK |
319 | struct power_work_info *info = |
320 | container_of(work, struct power_work_info, work); | |
321 | struct slot *p_slot = info->p_slot; | |
322 | ||
323 | mutex_lock(&p_slot->lock); | |
324 | switch (p_slot->state) { | |
325 | case POWEROFF_STATE: | |
326 | mutex_unlock(&p_slot->lock); | |
18b341b7 TI |
327 | ctrl_dbg(p_slot->ctrl, |
328 | "Disabling domain:bus:device=%04x:%02x:%02x\n", | |
329 | pci_domain_nr(p_slot->ctrl->pci_dev->subordinate), | |
330 | p_slot->bus, p_slot->device); | |
1da177e4 | 331 | pciehp_disable_slot(p_slot); |
5d386e1a | 332 | mutex_lock(&p_slot->lock); |
1da177e4 | 333 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
334 | break; |
335 | case POWERON_STATE: | |
336 | mutex_unlock(&p_slot->lock); | |
44ef4cef | 337 | if (pciehp_enable_slot(p_slot) && |
ae416e6b | 338 | PWR_LED(p_slot->ctrl)) |
1da177e4 | 339 | p_slot->hpc_ops->green_led_off(p_slot); |
5d386e1a | 340 | mutex_lock(&p_slot->lock); |
1da177e4 | 341 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
342 | break; |
343 | default: | |
344 | break; | |
1da177e4 | 345 | } |
5d386e1a | 346 | mutex_unlock(&p_slot->lock); |
1da177e4 | 347 | |
5d386e1a | 348 | kfree(info); |
1da177e4 LT |
349 | } |
350 | ||
e325e1f0 | 351 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
1da177e4 | 352 | { |
5d386e1a KK |
353 | struct slot *p_slot = container_of(work, struct slot, work.work); |
354 | struct power_work_info *info; | |
1da177e4 | 355 | |
5d386e1a KK |
356 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
357 | if (!info) { | |
7f2feec1 TI |
358 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
359 | __func__); | |
1da177e4 LT |
360 | return; |
361 | } | |
5d386e1a KK |
362 | info->p_slot = p_slot; |
363 | INIT_WORK(&info->work, pciehp_power_thread); | |
1da177e4 | 364 | |
5d386e1a KK |
365 | mutex_lock(&p_slot->lock); |
366 | switch (p_slot->state) { | |
367 | case BLINKINGOFF_STATE: | |
1da177e4 | 368 | p_slot->state = POWEROFF_STATE; |
5d386e1a KK |
369 | break; |
370 | case BLINKINGON_STATE: | |
1da177e4 | 371 | p_slot->state = POWERON_STATE; |
5d386e1a KK |
372 | break; |
373 | default: | |
374 | goto out; | |
1da177e4 | 375 | } |
5d386e1a KK |
376 | queue_work(pciehp_wq, &info->work); |
377 | out: | |
378 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
379 | } |
380 | ||
1da177e4 LT |
381 | static int update_slot_info(struct slot *slot) |
382 | { | |
383 | struct hotplug_slot_info *info; | |
1da177e4 LT |
384 | int result; |
385 | ||
5d386e1a | 386 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
1da177e4 LT |
387 | if (!info) |
388 | return -ENOMEM; | |
389 | ||
1da177e4 LT |
390 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); |
391 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
392 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
393 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
394 | ||
1da177e4 LT |
395 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
396 | kfree (info); | |
397 | return result; | |
398 | } | |
399 | ||
5d386e1a KK |
400 | /* |
401 | * Note: This function must be called with slot->lock held | |
402 | */ | |
403 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 404 | { |
5d386e1a | 405 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 406 | u8 getstatus; |
1da177e4 | 407 | |
5d386e1a KK |
408 | switch (p_slot->state) { |
409 | case STATIC_STATE: | |
410 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
411 | if (getstatus) { | |
412 | p_slot->state = BLINKINGOFF_STATE; | |
7f2feec1 TI |
413 | ctrl_info(ctrl, |
414 | "PCI slot #%s - powering off due to button " | |
e1acb24f | 415 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
416 | } else { |
417 | p_slot->state = BLINKINGON_STATE; | |
7f2feec1 TI |
418 | ctrl_info(ctrl, |
419 | "PCI slot #%s - powering on due to button " | |
e1acb24f | 420 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
421 | } |
422 | /* blink green LED and turn off amber */ | |
ae416e6b | 423 | if (PWR_LED(ctrl)) |
5d386e1a | 424 | p_slot->hpc_ops->green_led_blink(p_slot); |
ae416e6b | 425 | if (ATTN_LED(ctrl)) |
5d386e1a KK |
426 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
427 | ||
428 | schedule_delayed_work(&p_slot->work, 5*HZ); | |
429 | break; | |
430 | case BLINKINGOFF_STATE: | |
431 | case BLINKINGON_STATE: | |
432 | /* | |
433 | * Cancel if we are still blinking; this means that we | |
434 | * press the attention again before the 5 sec. limit | |
435 | * expires to cancel hot-add or hot-remove | |
436 | */ | |
e1acb24f | 437 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
438 | cancel_delayed_work(&p_slot->work); |
439 | if (p_slot->state == BLINKINGOFF_STATE) { | |
ae416e6b | 440 | if (PWR_LED(ctrl)) |
5d386e1a KK |
441 | p_slot->hpc_ops->green_led_on(p_slot); |
442 | } else { | |
ae416e6b | 443 | if (PWR_LED(ctrl)) |
5d386e1a KK |
444 | p_slot->hpc_ops->green_led_off(p_slot); |
445 | } | |
ae416e6b | 446 | if (ATTN_LED(ctrl)) |
5d386e1a | 447 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
7f2feec1 | 448 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
e1acb24f | 449 | "due to button press\n", slot_name(p_slot)); |
5d386e1a KK |
450 | p_slot->state = STATIC_STATE; |
451 | break; | |
452 | case POWEROFF_STATE: | |
453 | case POWERON_STATE: | |
454 | /* | |
455 | * Ignore if the slot is on power-on or power-off state; | |
456 | * this means that the previous attention button action | |
457 | * to hot-add or hot-remove is undergoing | |
458 | */ | |
e1acb24f | 459 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
460 | update_slot_info(p_slot); |
461 | break; | |
462 | default: | |
7f2feec1 | 463 | ctrl_warn(ctrl, "Not a valid state\n"); |
5d386e1a | 464 | break; |
1da177e4 LT |
465 | } |
466 | } | |
467 | ||
5d386e1a KK |
468 | /* |
469 | * Note: This function must be called with slot->lock held | |
470 | */ | |
471 | static void handle_surprise_event(struct slot *p_slot) | |
472 | { | |
473 | u8 getstatus; | |
474 | struct power_work_info *info; | |
475 | ||
476 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
477 | if (!info) { | |
7f2feec1 TI |
478 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
479 | __func__); | |
5d386e1a KK |
480 | return; |
481 | } | |
482 | info->p_slot = p_slot; | |
483 | INIT_WORK(&info->work, pciehp_power_thread); | |
484 | ||
485 | p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
486 | if (!getstatus) | |
487 | p_slot->state = POWEROFF_STATE; | |
488 | else | |
489 | p_slot->state = POWERON_STATE; | |
490 | ||
491 | queue_work(pciehp_wq, &info->work); | |
492 | } | |
493 | ||
494 | static void interrupt_event_handler(struct work_struct *work) | |
495 | { | |
496 | struct event_info *info = container_of(work, struct event_info, work); | |
497 | struct slot *p_slot = info->p_slot; | |
498 | struct controller *ctrl = p_slot->ctrl; | |
499 | ||
500 | mutex_lock(&p_slot->lock); | |
501 | switch (info->event_type) { | |
502 | case INT_BUTTON_PRESS: | |
503 | handle_button_press_event(p_slot); | |
504 | break; | |
505 | case INT_POWER_FAULT: | |
ae416e6b | 506 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 507 | break; |
ae416e6b | 508 | if (ATTN_LED(ctrl)) |
5d386e1a | 509 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
ae416e6b | 510 | if (PWR_LED(ctrl)) |
5d386e1a KK |
511 | p_slot->hpc_ops->green_led_off(p_slot); |
512 | break; | |
513 | case INT_PRESENCE_ON: | |
514 | case INT_PRESENCE_OFF: | |
ae416e6b | 515 | if (!HP_SUPR_RM(ctrl)) |
5d386e1a | 516 | break; |
7f2feec1 | 517 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
5d386e1a KK |
518 | update_slot_info(p_slot); |
519 | handle_surprise_event(p_slot); | |
520 | break; | |
521 | default: | |
522 | update_slot_info(p_slot); | |
523 | break; | |
524 | } | |
525 | mutex_unlock(&p_slot->lock); | |
526 | ||
527 | kfree(info); | |
528 | } | |
529 | ||
1da177e4 LT |
530 | int pciehp_enable_slot(struct slot *p_slot) |
531 | { | |
532 | u8 getstatus = 0; | |
533 | int rc; | |
7f2feec1 | 534 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
535 | |
536 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 537 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
538 | |
539 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
540 | if (rc || !getstatus) { | |
18b341b7 | 541 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
6aa4cdd0 | 542 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 543 | return -ENODEV; |
1da177e4 | 544 | } |
ae416e6b | 545 | if (MRL_SENS(p_slot->ctrl)) { |
1da177e4 LT |
546 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
547 | if (rc || getstatus) { | |
18b341b7 TI |
548 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
549 | slot_name(p_slot)); | |
6aa4cdd0 | 550 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 551 | return -ENODEV; |
1da177e4 LT |
552 | } |
553 | } | |
36ed27b0 | 554 | |
ae416e6b | 555 | if (POWER_CTRL(p_slot->ctrl)) { |
1da177e4 LT |
556 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
557 | if (rc || getstatus) { | |
18b341b7 TI |
558 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
559 | slot_name(p_slot)); | |
6aa4cdd0 | 560 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 561 | return -EINVAL; |
1da177e4 LT |
562 | } |
563 | } | |
1da177e4 | 564 | |
1da177e4 | 565 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 566 | |
ca22a5e4 | 567 | rc = board_added(p_slot); |
1da177e4 | 568 | if (rc) { |
1da177e4 | 569 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
570 | } |
571 | ||
9ef9977c | 572 | update_slot_info(p_slot); |
1da177e4 | 573 | |
dd5619cb | 574 | mutex_unlock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
575 | return rc; |
576 | } | |
577 | ||
578 | ||
579 | int pciehp_disable_slot(struct slot *p_slot) | |
580 | { | |
1da177e4 | 581 | u8 getstatus = 0; |
1da177e4 | 582 | int ret = 0; |
7f2feec1 | 583 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
584 | |
585 | if (!p_slot->ctrl) | |
586 | return 1; | |
587 | ||
588 | /* Check to see if (latch closed, card present, power on) */ | |
6aa4cdd0 | 589 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 590 | |
ae416e6b | 591 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
1da177e4 LT |
592 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
593 | if (ret || !getstatus) { | |
18b341b7 TI |
594 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
595 | slot_name(p_slot)); | |
6aa4cdd0 | 596 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 597 | return -ENODEV; |
1da177e4 LT |
598 | } |
599 | } | |
600 | ||
ae416e6b | 601 | if (MRL_SENS(p_slot->ctrl)) { |
1da177e4 LT |
602 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
603 | if (ret || getstatus) { | |
18b341b7 TI |
604 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
605 | slot_name(p_slot)); | |
6aa4cdd0 | 606 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 607 | return -ENODEV; |
1da177e4 LT |
608 | } |
609 | } | |
610 | ||
ae416e6b | 611 | if (POWER_CTRL(p_slot->ctrl)) { |
1da177e4 LT |
612 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
613 | if (ret || !getstatus) { | |
18b341b7 TI |
614 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
615 | slot_name(p_slot)); | |
6aa4cdd0 | 616 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 617 | return -EINVAL; |
1da177e4 LT |
618 | } |
619 | } | |
620 | ||
ca22a5e4 | 621 | ret = remove_board(p_slot); |
622 | update_slot_info(p_slot); | |
dd5619cb KK |
623 | |
624 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
ca22a5e4 | 625 | return ret; |
1da177e4 LT |
626 | } |
627 | ||
5d386e1a KK |
628 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
629 | { | |
630 | int retval = -ENODEV; | |
7f2feec1 | 631 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
632 | |
633 | mutex_lock(&p_slot->lock); | |
634 | switch (p_slot->state) { | |
635 | case BLINKINGON_STATE: | |
636 | cancel_delayed_work(&p_slot->work); | |
637 | case STATIC_STATE: | |
638 | p_slot->state = POWERON_STATE; | |
639 | mutex_unlock(&p_slot->lock); | |
640 | retval = pciehp_enable_slot(p_slot); | |
641 | mutex_lock(&p_slot->lock); | |
642 | p_slot->state = STATIC_STATE; | |
643 | break; | |
644 | case POWERON_STATE: | |
7f2feec1 | 645 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 646 | slot_name(p_slot)); |
5d386e1a KK |
647 | break; |
648 | case BLINKINGOFF_STATE: | |
649 | case POWEROFF_STATE: | |
e1acb24f AC |
650 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
651 | slot_name(p_slot)); | |
5d386e1a KK |
652 | break; |
653 | default: | |
e1acb24f AC |
654 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
655 | slot_name(p_slot)); | |
5d386e1a KK |
656 | break; |
657 | } | |
658 | mutex_unlock(&p_slot->lock); | |
659 | ||
660 | return retval; | |
661 | } | |
662 | ||
663 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
664 | { | |
665 | int retval = -ENODEV; | |
7f2feec1 | 666 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
667 | |
668 | mutex_lock(&p_slot->lock); | |
669 | switch (p_slot->state) { | |
670 | case BLINKINGOFF_STATE: | |
671 | cancel_delayed_work(&p_slot->work); | |
672 | case STATIC_STATE: | |
673 | p_slot->state = POWEROFF_STATE; | |
674 | mutex_unlock(&p_slot->lock); | |
675 | retval = pciehp_disable_slot(p_slot); | |
676 | mutex_lock(&p_slot->lock); | |
677 | p_slot->state = STATIC_STATE; | |
678 | break; | |
679 | case POWEROFF_STATE: | |
7f2feec1 | 680 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 681 | slot_name(p_slot)); |
5d386e1a KK |
682 | break; |
683 | case BLINKINGON_STATE: | |
684 | case POWERON_STATE: | |
e1acb24f AC |
685 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
686 | slot_name(p_slot)); | |
5d386e1a KK |
687 | break; |
688 | default: | |
e1acb24f AC |
689 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
690 | slot_name(p_slot)); | |
5d386e1a KK |
691 | break; |
692 | } | |
693 | mutex_unlock(&p_slot->lock); | |
694 | ||
695 | return retval; | |
696 | } |