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 | |
1da177e4 | 85 | p_slot->hpc_ops->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 | */ | |
ed6cbcf2 RS |
117 | p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save); |
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 | |
1da177e4 LT |
146 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { |
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)) { |
36ed27b0 | 175 | if (pslot->hpc_ops->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)) |
36ed27b0 | 189 | pslot->hpc_ops->green_led_off(pslot); |
1da177e4 | 190 | |
ae416e6b | 191 | if (ATTN_LED(ctrl)) { |
44ef4cef | 192 | if (pslot->hpc_ops->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; |
18b341b7 | 211 | struct pci_bus *parent = ctrl->pci_dev->subordinate; |
1da177e4 | 212 | |
18b341b7 | 213 | ctrl_dbg(ctrl, "%s: slot device, slot offset, hp slot = %d, %d, %d\n", |
7f2feec1 TI |
214 | __func__, p_slot->device, ctrl->slot_device_offset, |
215 | p_slot->hp_slot); | |
1da177e4 | 216 | |
ae416e6b | 217 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 218 | /* Power on slot */ |
44ef4cef KK |
219 | retval = p_slot->hpc_ops->power_on_slot(p_slot); |
220 | if (retval) | |
221 | return retval; | |
1da177e4 | 222 | } |
36ed27b0 | 223 | |
ae416e6b | 224 | if (PWR_LED(ctrl)) |
1da177e4 | 225 | p_slot->hpc_ops->green_led_blink(p_slot); |
1da177e4 | 226 | |
44ef4cef KK |
227 | /* Check link training status */ |
228 | retval = p_slot->hpc_ops->check_lnk_status(ctrl); | |
229 | if (retval) { | |
18b341b7 | 230 | ctrl_err(ctrl, "Failed to check link status\n"); |
1da177e4 | 231 | set_slot_off(ctrl, p_slot); |
44ef4cef | 232 | return retval; |
1da177e4 LT |
233 | } |
234 | ||
1da177e4 | 235 | /* Check for a power fault */ |
5a49f203 | 236 | if (p_slot->hpc_ops->query_power_fault(p_slot)) { |
18b341b7 | 237 | ctrl_dbg(ctrl, "Power fault detected\n"); |
44ef4cef | 238 | retval = POWER_FAILURE; |
71b720c0 | 239 | goto err_exit; |
1da177e4 LT |
240 | } |
241 | ||
44ef4cef KK |
242 | retval = pciehp_configure_device(p_slot); |
243 | if (retval) { | |
18b341b7 TI |
244 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
245 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
71b720c0 RS |
246 | goto err_exit; |
247 | } | |
1da177e4 | 248 | |
71b720c0 RS |
249 | /* |
250 | * Some PCI Express root ports require fixup after hot-plug operation. | |
251 | */ | |
252 | if (pcie_mch_quirk) | |
253 | pci_fixup_device(pci_fixup_final, ctrl->pci_dev); | |
ae416e6b | 254 | if (PWR_LED(ctrl)) |
71b720c0 | 255 | p_slot->hpc_ops->green_led_on(p_slot); |
44ef4cef | 256 | |
1da177e4 | 257 | return 0; |
71b720c0 RS |
258 | |
259 | err_exit: | |
260 | set_slot_off(ctrl, p_slot); | |
44ef4cef | 261 | return retval; |
1da177e4 LT |
262 | } |
263 | ||
1da177e4 | 264 | /** |
26e6c66e RD |
265 | * remove_board - Turns off slot and LEDs |
266 | * @p_slot: slot where board is being removed | |
1da177e4 | 267 | */ |
ed6cbcf2 | 268 | static int remove_board(struct slot *p_slot) |
1da177e4 | 269 | { |
44ef4cef | 270 | int retval = 0; |
ca22a5e4 | 271 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 272 | |
44ef4cef KK |
273 | retval = pciehp_unconfigure_device(p_slot); |
274 | if (retval) | |
275 | return retval; | |
1da177e4 | 276 | |
18b341b7 | 277 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, p_slot->hp_slot); |
1da177e4 | 278 | |
ae416e6b | 279 | if (POWER_CTRL(ctrl)) { |
1da177e4 | 280 | /* power off slot */ |
44ef4cef KK |
281 | retval = p_slot->hpc_ops->power_off_slot(p_slot); |
282 | if (retval) { | |
18b341b7 TI |
283 | ctrl_err(ctrl, |
284 | "Issue of Slot Disable command failed\n"); | |
44ef4cef | 285 | return retval; |
1da177e4 | 286 | } |
c7b4fee3 KK |
287 | /* |
288 | * After turning power off, we must wait for at least 1 second | |
289 | * before taking any action that relies on power having been | |
290 | * removed from the slot/adapter. | |
291 | */ | |
292 | msleep(1000); | |
1da177e4 LT |
293 | } |
294 | ||
ae416e6b | 295 | if (PWR_LED(ctrl)) |
1da177e4 LT |
296 | /* turn off Green LED */ |
297 | p_slot->hpc_ops->green_led_off(p_slot); | |
1da177e4 | 298 | |
1da177e4 LT |
299 | return 0; |
300 | } | |
301 | ||
5d386e1a KK |
302 | struct power_work_info { |
303 | struct slot *p_slot; | |
304 | struct work_struct work; | |
305 | }; | |
1da177e4 LT |
306 | |
307 | /** | |
26e6c66e RD |
308 | * pciehp_power_thread - handle pushbutton events |
309 | * @work: &struct work_struct describing work to be done | |
1da177e4 | 310 | * |
26e6c66e | 311 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 312 | * Handles all pending events and exits. |
1da177e4 | 313 | */ |
5d386e1a | 314 | static void pciehp_power_thread(struct work_struct *work) |
1da177e4 | 315 | { |
5d386e1a KK |
316 | struct power_work_info *info = |
317 | container_of(work, struct power_work_info, work); | |
318 | struct slot *p_slot = info->p_slot; | |
319 | ||
320 | mutex_lock(&p_slot->lock); | |
321 | switch (p_slot->state) { | |
322 | case POWEROFF_STATE: | |
323 | mutex_unlock(&p_slot->lock); | |
18b341b7 TI |
324 | ctrl_dbg(p_slot->ctrl, |
325 | "Disabling domain:bus:device=%04x:%02x:%02x\n", | |
326 | pci_domain_nr(p_slot->ctrl->pci_dev->subordinate), | |
327 | p_slot->bus, p_slot->device); | |
1da177e4 | 328 | pciehp_disable_slot(p_slot); |
5d386e1a | 329 | mutex_lock(&p_slot->lock); |
1da177e4 | 330 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
331 | break; |
332 | case POWERON_STATE: | |
333 | mutex_unlock(&p_slot->lock); | |
44ef4cef | 334 | if (pciehp_enable_slot(p_slot) && |
ae416e6b | 335 | PWR_LED(p_slot->ctrl)) |
1da177e4 | 336 | p_slot->hpc_ops->green_led_off(p_slot); |
5d386e1a | 337 | mutex_lock(&p_slot->lock); |
1da177e4 | 338 | p_slot->state = STATIC_STATE; |
5d386e1a KK |
339 | break; |
340 | default: | |
341 | break; | |
1da177e4 | 342 | } |
5d386e1a | 343 | mutex_unlock(&p_slot->lock); |
1da177e4 | 344 | |
5d386e1a | 345 | kfree(info); |
1da177e4 LT |
346 | } |
347 | ||
e325e1f0 | 348 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
1da177e4 | 349 | { |
5d386e1a KK |
350 | struct slot *p_slot = container_of(work, struct slot, work.work); |
351 | struct power_work_info *info; | |
1da177e4 | 352 | |
5d386e1a KK |
353 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
354 | if (!info) { | |
7f2feec1 TI |
355 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
356 | __func__); | |
1da177e4 LT |
357 | return; |
358 | } | |
5d386e1a KK |
359 | info->p_slot = p_slot; |
360 | INIT_WORK(&info->work, pciehp_power_thread); | |
1da177e4 | 361 | |
5d386e1a KK |
362 | mutex_lock(&p_slot->lock); |
363 | switch (p_slot->state) { | |
364 | case BLINKINGOFF_STATE: | |
1da177e4 | 365 | p_slot->state = POWEROFF_STATE; |
5d386e1a KK |
366 | break; |
367 | case BLINKINGON_STATE: | |
1da177e4 | 368 | p_slot->state = POWERON_STATE; |
5d386e1a KK |
369 | break; |
370 | default: | |
371 | goto out; | |
1da177e4 | 372 | } |
5d386e1a KK |
373 | queue_work(pciehp_wq, &info->work); |
374 | out: | |
375 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
376 | } |
377 | ||
1da177e4 LT |
378 | static int update_slot_info(struct slot *slot) |
379 | { | |
380 | struct hotplug_slot_info *info; | |
1da177e4 LT |
381 | int result; |
382 | ||
5d386e1a | 383 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
1da177e4 LT |
384 | if (!info) |
385 | return -ENOMEM; | |
386 | ||
1da177e4 LT |
387 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); |
388 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
389 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
390 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
391 | ||
1da177e4 LT |
392 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
393 | kfree (info); | |
394 | return result; | |
395 | } | |
396 | ||
5d386e1a KK |
397 | /* |
398 | * Note: This function must be called with slot->lock held | |
399 | */ | |
400 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 401 | { |
5d386e1a | 402 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 403 | u8 getstatus; |
1da177e4 | 404 | |
5d386e1a KK |
405 | switch (p_slot->state) { |
406 | case STATIC_STATE: | |
407 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
408 | if (getstatus) { | |
409 | p_slot->state = BLINKINGOFF_STATE; | |
7f2feec1 TI |
410 | ctrl_info(ctrl, |
411 | "PCI slot #%s - powering off due to button " | |
e1acb24f | 412 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
413 | } else { |
414 | p_slot->state = BLINKINGON_STATE; | |
7f2feec1 TI |
415 | ctrl_info(ctrl, |
416 | "PCI slot #%s - powering on due to button " | |
e1acb24f | 417 | "press.\n", slot_name(p_slot)); |
5d386e1a KK |
418 | } |
419 | /* blink green LED and turn off amber */ | |
ae416e6b | 420 | if (PWR_LED(ctrl)) |
5d386e1a | 421 | p_slot->hpc_ops->green_led_blink(p_slot); |
ae416e6b | 422 | if (ATTN_LED(ctrl)) |
5d386e1a KK |
423 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
424 | ||
425 | schedule_delayed_work(&p_slot->work, 5*HZ); | |
426 | break; | |
427 | case BLINKINGOFF_STATE: | |
428 | case BLINKINGON_STATE: | |
429 | /* | |
430 | * Cancel if we are still blinking; this means that we | |
431 | * press the attention again before the 5 sec. limit | |
432 | * expires to cancel hot-add or hot-remove | |
433 | */ | |
e1acb24f | 434 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
435 | cancel_delayed_work(&p_slot->work); |
436 | if (p_slot->state == BLINKINGOFF_STATE) { | |
ae416e6b | 437 | if (PWR_LED(ctrl)) |
5d386e1a KK |
438 | p_slot->hpc_ops->green_led_on(p_slot); |
439 | } else { | |
ae416e6b | 440 | if (PWR_LED(ctrl)) |
5d386e1a KK |
441 | p_slot->hpc_ops->green_led_off(p_slot); |
442 | } | |
ae416e6b | 443 | if (ATTN_LED(ctrl)) |
5d386e1a | 444 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
7f2feec1 | 445 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
e1acb24f | 446 | "due to button press\n", slot_name(p_slot)); |
5d386e1a KK |
447 | p_slot->state = STATIC_STATE; |
448 | break; | |
449 | case POWEROFF_STATE: | |
450 | case POWERON_STATE: | |
451 | /* | |
452 | * Ignore if the slot is on power-on or power-off state; | |
453 | * this means that the previous attention button action | |
454 | * to hot-add or hot-remove is undergoing | |
455 | */ | |
e1acb24f | 456 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
5d386e1a KK |
457 | update_slot_info(p_slot); |
458 | break; | |
459 | default: | |
7f2feec1 | 460 | ctrl_warn(ctrl, "Not a valid state\n"); |
5d386e1a | 461 | break; |
1da177e4 LT |
462 | } |
463 | } | |
464 | ||
5d386e1a KK |
465 | /* |
466 | * Note: This function must be called with slot->lock held | |
467 | */ | |
468 | static void handle_surprise_event(struct slot *p_slot) | |
469 | { | |
470 | u8 getstatus; | |
471 | struct power_work_info *info; | |
472 | ||
473 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
474 | if (!info) { | |
7f2feec1 TI |
475 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
476 | __func__); | |
5d386e1a KK |
477 | return; |
478 | } | |
479 | info->p_slot = p_slot; | |
480 | INIT_WORK(&info->work, pciehp_power_thread); | |
481 | ||
482 | p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
483 | if (!getstatus) | |
484 | p_slot->state = POWEROFF_STATE; | |
485 | else | |
486 | p_slot->state = POWERON_STATE; | |
487 | ||
488 | queue_work(pciehp_wq, &info->work); | |
489 | } | |
490 | ||
491 | static void interrupt_event_handler(struct work_struct *work) | |
492 | { | |
493 | struct event_info *info = container_of(work, struct event_info, work); | |
494 | struct slot *p_slot = info->p_slot; | |
495 | struct controller *ctrl = p_slot->ctrl; | |
496 | ||
497 | mutex_lock(&p_slot->lock); | |
498 | switch (info->event_type) { | |
499 | case INT_BUTTON_PRESS: | |
500 | handle_button_press_event(p_slot); | |
501 | break; | |
502 | case INT_POWER_FAULT: | |
ae416e6b | 503 | if (!POWER_CTRL(ctrl)) |
5d386e1a | 504 | break; |
ae416e6b | 505 | if (ATTN_LED(ctrl)) |
5d386e1a | 506 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
ae416e6b | 507 | if (PWR_LED(ctrl)) |
5d386e1a KK |
508 | p_slot->hpc_ops->green_led_off(p_slot); |
509 | break; | |
510 | case INT_PRESENCE_ON: | |
511 | case INT_PRESENCE_OFF: | |
ae416e6b | 512 | if (!HP_SUPR_RM(ctrl)) |
5d386e1a | 513 | break; |
7f2feec1 | 514 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
5d386e1a KK |
515 | update_slot_info(p_slot); |
516 | handle_surprise_event(p_slot); | |
517 | break; | |
518 | default: | |
519 | update_slot_info(p_slot); | |
520 | break; | |
521 | } | |
522 | mutex_unlock(&p_slot->lock); | |
523 | ||
524 | kfree(info); | |
525 | } | |
526 | ||
1da177e4 LT |
527 | int pciehp_enable_slot(struct slot *p_slot) |
528 | { | |
529 | u8 getstatus = 0; | |
530 | int rc; | |
7f2feec1 | 531 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
532 | |
533 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 534 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
535 | |
536 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
537 | if (rc || !getstatus) { | |
18b341b7 | 538 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
6aa4cdd0 | 539 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 540 | return -ENODEV; |
1da177e4 | 541 | } |
ae416e6b | 542 | if (MRL_SENS(p_slot->ctrl)) { |
1da177e4 LT |
543 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
544 | if (rc || getstatus) { | |
18b341b7 TI |
545 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
546 | slot_name(p_slot)); | |
6aa4cdd0 | 547 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 548 | return -ENODEV; |
1da177e4 LT |
549 | } |
550 | } | |
36ed27b0 | 551 | |
ae416e6b | 552 | if (POWER_CTRL(p_slot->ctrl)) { |
1da177e4 LT |
553 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
554 | if (rc || getstatus) { | |
18b341b7 TI |
555 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
556 | slot_name(p_slot)); | |
6aa4cdd0 | 557 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 558 | return -EINVAL; |
1da177e4 LT |
559 | } |
560 | } | |
1da177e4 | 561 | |
1da177e4 | 562 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 563 | |
ca22a5e4 | 564 | rc = board_added(p_slot); |
1da177e4 | 565 | if (rc) { |
1da177e4 | 566 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
567 | } |
568 | ||
9ef9977c | 569 | update_slot_info(p_slot); |
1da177e4 | 570 | |
dd5619cb | 571 | mutex_unlock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
572 | return rc; |
573 | } | |
574 | ||
575 | ||
576 | int pciehp_disable_slot(struct slot *p_slot) | |
577 | { | |
1da177e4 | 578 | u8 getstatus = 0; |
1da177e4 | 579 | int ret = 0; |
7f2feec1 | 580 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
581 | |
582 | if (!p_slot->ctrl) | |
583 | return 1; | |
584 | ||
585 | /* Check to see if (latch closed, card present, power on) */ | |
6aa4cdd0 | 586 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 587 | |
ae416e6b | 588 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
1da177e4 LT |
589 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
590 | if (ret || !getstatus) { | |
18b341b7 TI |
591 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
592 | slot_name(p_slot)); | |
6aa4cdd0 | 593 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 594 | return -ENODEV; |
1da177e4 LT |
595 | } |
596 | } | |
597 | ||
ae416e6b | 598 | if (MRL_SENS(p_slot->ctrl)) { |
1da177e4 LT |
599 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
600 | if (ret || getstatus) { | |
18b341b7 TI |
601 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
602 | slot_name(p_slot)); | |
6aa4cdd0 | 603 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 604 | return -ENODEV; |
1da177e4 LT |
605 | } |
606 | } | |
607 | ||
ae416e6b | 608 | if (POWER_CTRL(p_slot->ctrl)) { |
1da177e4 LT |
609 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
610 | if (ret || !getstatus) { | |
18b341b7 TI |
611 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
612 | slot_name(p_slot)); | |
6aa4cdd0 | 613 | mutex_unlock(&p_slot->ctrl->crit_sect); |
c9d86d76 | 614 | return -EINVAL; |
1da177e4 LT |
615 | } |
616 | } | |
617 | ||
ca22a5e4 RS |
618 | ret = remove_board(p_slot); |
619 | update_slot_info(p_slot); | |
dd5619cb KK |
620 | |
621 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
ca22a5e4 | 622 | return ret; |
1da177e4 LT |
623 | } |
624 | ||
5d386e1a KK |
625 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
626 | { | |
627 | int retval = -ENODEV; | |
7f2feec1 | 628 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
629 | |
630 | mutex_lock(&p_slot->lock); | |
631 | switch (p_slot->state) { | |
632 | case BLINKINGON_STATE: | |
633 | cancel_delayed_work(&p_slot->work); | |
634 | case STATIC_STATE: | |
635 | p_slot->state = POWERON_STATE; | |
636 | mutex_unlock(&p_slot->lock); | |
637 | retval = pciehp_enable_slot(p_slot); | |
638 | mutex_lock(&p_slot->lock); | |
639 | p_slot->state = STATIC_STATE; | |
640 | break; | |
641 | case POWERON_STATE: | |
7f2feec1 | 642 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
e1acb24f | 643 | slot_name(p_slot)); |
5d386e1a KK |
644 | break; |
645 | case BLINKINGOFF_STATE: | |
646 | case POWEROFF_STATE: | |
e1acb24f AC |
647 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
648 | slot_name(p_slot)); | |
5d386e1a KK |
649 | break; |
650 | default: | |
e1acb24f AC |
651 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
652 | slot_name(p_slot)); | |
5d386e1a KK |
653 | break; |
654 | } | |
655 | mutex_unlock(&p_slot->lock); | |
656 | ||
657 | return retval; | |
658 | } | |
659 | ||
660 | int pciehp_sysfs_disable_slot(struct slot *p_slot) | |
661 | { | |
662 | int retval = -ENODEV; | |
7f2feec1 | 663 | struct controller *ctrl = p_slot->ctrl; |
5d386e1a KK |
664 | |
665 | mutex_lock(&p_slot->lock); | |
666 | switch (p_slot->state) { | |
667 | case BLINKINGOFF_STATE: | |
668 | cancel_delayed_work(&p_slot->work); | |
669 | case STATIC_STATE: | |
670 | p_slot->state = POWEROFF_STATE; | |
671 | mutex_unlock(&p_slot->lock); | |
672 | retval = pciehp_disable_slot(p_slot); | |
673 | mutex_lock(&p_slot->lock); | |
674 | p_slot->state = STATIC_STATE; | |
675 | break; | |
676 | case POWEROFF_STATE: | |
7f2feec1 | 677 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
e1acb24f | 678 | slot_name(p_slot)); |
5d386e1a KK |
679 | break; |
680 | case BLINKINGON_STATE: | |
681 | case POWERON_STATE: | |
e1acb24f AC |
682 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
683 | slot_name(p_slot)); | |
5d386e1a KK |
684 | break; |
685 | default: | |
e1acb24f AC |
686 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
687 | slot_name(p_slot)); | |
5d386e1a KK |
688 | break; |
689 | } | |
690 | mutex_unlock(&p_slot->lock); | |
691 | ||
692 | return retval; | |
693 | } |