Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Standard 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> | |
f7391f53 | 35 | #include <linux/workqueue.h> |
dbd7a788 | 36 | #include "../pci.h" |
1da177e4 | 37 | #include "shpchp.h" |
1da177e4 | 38 | |
c4028958 | 39 | static void interrupt_event_handler(struct work_struct *work); |
a246fa4e KK |
40 | static int shpchp_enable_slot(struct slot *p_slot); |
41 | static int shpchp_disable_slot(struct slot *p_slot); | |
1da177e4 | 42 | |
f7391f53 KK |
43 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
44 | { | |
45 | struct event_info *info; | |
46 | ||
47 | info = kmalloc(sizeof(*info), GFP_ATOMIC); | |
48 | if (!info) | |
49 | return -ENOMEM; | |
50 | ||
51 | info->event_type = event_type; | |
52 | info->p_slot = p_slot; | |
c4028958 | 53 | INIT_WORK(&info->work, interrupt_event_handler); |
f7391f53 | 54 | |
a246fa4e | 55 | schedule_work(&info->work); |
f7391f53 KK |
56 | |
57 | return 0; | |
58 | } | |
1da177e4 | 59 | |
1da177e4 LT |
60 | u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id) |
61 | { | |
62 | struct controller *ctrl = (struct controller *) inst_id; | |
63 | struct slot *p_slot; | |
f7391f53 | 64 | u32 event_type; |
1da177e4 LT |
65 | |
66 | /* Attention Button Change */ | |
67 | dbg("shpchp: Attention button interrupt received.\n"); | |
68 | ||
1da177e4 | 69 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 70 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 LT |
71 | |
72 | /* | |
73 | * Button pressed - See if need to TAKE ACTION!!! | |
74 | */ | |
99ff124d | 75 | info("Button pressed on Slot(%s)\n", p_slot->name); |
f7391f53 | 76 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 77 | |
f7391f53 | 78 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
79 | |
80 | return 0; | |
81 | ||
82 | } | |
83 | ||
84 | u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) | |
85 | { | |
86 | struct controller *ctrl = (struct controller *) inst_id; | |
87 | struct slot *p_slot; | |
1da177e4 | 88 | u8 getstatus; |
f7391f53 | 89 | u32 event_type; |
1da177e4 LT |
90 | |
91 | /* Switch Change */ | |
92 | dbg("shpchp: Switch interrupt received.\n"); | |
93 | ||
1da177e4 | 94 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 95 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 LT |
96 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
97 | dbg("%s: Card present %x Power status %x\n", __FUNCTION__, | |
2178bfad | 98 | p_slot->presence_save, p_slot->pwr_save); |
1da177e4 LT |
99 | |
100 | if (getstatus) { | |
101 | /* | |
102 | * Switch opened | |
103 | */ | |
99ff124d | 104 | info("Latch open on Slot(%s)\n", p_slot->name); |
f7391f53 | 105 | event_type = INT_SWITCH_OPEN; |
2178bfad | 106 | if (p_slot->pwr_save && p_slot->presence_save) { |
f7391f53 | 107 | event_type = INT_POWER_FAULT; |
1da177e4 LT |
108 | err("Surprise Removal of card\n"); |
109 | } | |
110 | } else { | |
111 | /* | |
112 | * Switch closed | |
113 | */ | |
99ff124d | 114 | info("Latch close on Slot(%s)\n", p_slot->name); |
f7391f53 | 115 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
116 | } |
117 | ||
f7391f53 | 118 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 119 | |
f7391f53 | 120 | return 1; |
1da177e4 LT |
121 | } |
122 | ||
123 | u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id) | |
124 | { | |
125 | struct controller *ctrl = (struct controller *) inst_id; | |
126 | struct slot *p_slot; | |
f7391f53 | 127 | u32 event_type; |
1da177e4 LT |
128 | |
129 | /* Presence Change */ | |
130 | dbg("shpchp: Presence/Notify input change.\n"); | |
131 | ||
1da177e4 LT |
132 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
133 | ||
134 | /* | |
135 | * Save the presence state | |
136 | */ | |
2178bfad | 137 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
138 | if (p_slot->presence_save) { | |
1da177e4 LT |
139 | /* |
140 | * Card Present | |
141 | */ | |
99ff124d | 142 | info("Card present on Slot(%s)\n", p_slot->name); |
f7391f53 | 143 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
144 | } else { |
145 | /* | |
146 | * Not Present | |
147 | */ | |
99ff124d | 148 | info("Card not present on Slot(%s)\n", p_slot->name); |
f7391f53 | 149 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
150 | } |
151 | ||
f7391f53 | 152 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 153 | |
f7391f53 | 154 | return 1; |
1da177e4 LT |
155 | } |
156 | ||
157 | u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id) | |
158 | { | |
159 | struct controller *ctrl = (struct controller *) inst_id; | |
160 | struct slot *p_slot; | |
f7391f53 | 161 | u32 event_type; |
1da177e4 LT |
162 | |
163 | /* Power fault */ | |
164 | dbg("shpchp: Power fault interrupt received.\n"); | |
165 | ||
1da177e4 LT |
166 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
167 | ||
168 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { | |
169 | /* | |
170 | * Power fault Cleared | |
171 | */ | |
99ff124d | 172 | info("Power fault cleared on Slot(%s)\n", p_slot->name); |
2178bfad | 173 | p_slot->status = 0x00; |
f7391f53 | 174 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
175 | } else { |
176 | /* | |
177 | * Power fault | |
178 | */ | |
99ff124d | 179 | info("Power fault on Slot(%s)\n", p_slot->name); |
f7391f53 | 180 | event_type = INT_POWER_FAULT; |
1da177e4 | 181 | /* set power fault status for this board */ |
2178bfad | 182 | p_slot->status = 0xFF; |
1da177e4 LT |
183 | info("power fault bit %x set\n", hp_slot); |
184 | } | |
1da177e4 | 185 | |
f7391f53 KK |
186 | queue_interrupt_event(p_slot, event_type); |
187 | ||
188 | return 1; | |
1da177e4 LT |
189 | } |
190 | ||
1da177e4 LT |
191 | /* The following routines constitute the bulk of the |
192 | hotplug controller logic | |
193 | */ | |
ee138334 | 194 | static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, |
195 | enum pci_bus_speed speed) | |
1da177e4 | 196 | { |
ee138334 | 197 | int rc = 0; |
1da177e4 LT |
198 | |
199 | dbg("%s: change to speed %d\n", __FUNCTION__, speed); | |
1da177e4 | 200 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { |
0afabe90 KK |
201 | err("%s: Issue of set bus speed mode command failed\n", |
202 | __FUNCTION__); | |
1da177e4 LT |
203 | return WRONG_BUS_FREQUENCY; |
204 | } | |
1da177e4 LT |
205 | return rc; |
206 | } | |
207 | ||
ee138334 | 208 | static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, |
209 | u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, | |
210 | enum pci_bus_speed msp) | |
1da177e4 | 211 | { |
ee138334 | 212 | int rc = 0; |
0afabe90 KK |
213 | |
214 | /* | |
215 | * If other slots on the same bus are occupied, we cannot | |
216 | * change the bus speed. | |
217 | */ | |
218 | if (flag) { | |
219 | if (asp < bsp) { | |
220 | err("%s: speed of bus %x and adapter %x mismatch\n", | |
221 | __FUNCTION__, bsp, asp); | |
222 | rc = WRONG_BUS_FREQUENCY; | |
1da177e4 | 223 | } |
0afabe90 KK |
224 | return rc; |
225 | } | |
226 | ||
227 | if (asp < msp) { | |
228 | if (bsp != asp) | |
229 | rc = change_bus_speed(ctrl, pslot, asp); | |
1da177e4 | 230 | } else { |
0afabe90 KK |
231 | if (bsp != msp) |
232 | rc = change_bus_speed(ctrl, pslot, msp); | |
1da177e4 LT |
233 | } |
234 | return rc; | |
235 | } | |
236 | ||
237 | /** | |
238 | * board_added - Called after a board has been added to the system. | |
239 | * | |
240 | * Turns power on for the board | |
241 | * Configures board | |
242 | * | |
243 | */ | |
ee138334 | 244 | static int board_added(struct slot *p_slot) |
1da177e4 LT |
245 | { |
246 | u8 hp_slot; | |
247 | u8 slots_not_empty = 0; | |
ee138334 | 248 | int rc = 0; |
0afabe90 | 249 | enum pci_bus_speed asp, bsp, msp; |
2178bfad | 250 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 251 | |
2178bfad | 252 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 | 253 | |
2178bfad | 254 | dbg("%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", |
255 | __FUNCTION__, p_slot->device, | |
256 | ctrl->slot_device_offset, hp_slot); | |
1da177e4 | 257 | |
1da177e4 LT |
258 | /* Power on slot without connecting to bus */ |
259 | rc = p_slot->hpc_ops->power_on_slot(p_slot); | |
260 | if (rc) { | |
261 | err("%s: Failed to power on slot\n", __FUNCTION__); | |
1da177e4 LT |
262 | return -1; |
263 | } | |
1da177e4 | 264 | |
1da177e4 LT |
265 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
266 | if (slots_not_empty) | |
267 | return WRONG_BUS_FREQUENCY; | |
268 | ||
269 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { | |
270 | err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); | |
1da177e4 LT |
271 | return WRONG_BUS_FREQUENCY; |
272 | } | |
1da177e4 | 273 | |
1da177e4 LT |
274 | /* turn on board, blink green LED, turn off Amber LED */ |
275 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
276 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); | |
1da177e4 LT |
277 | return rc; |
278 | } | |
1da177e4 LT |
279 | } |
280 | ||
0afabe90 KK |
281 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
282 | if (rc) { | |
283 | err("%s: Can't get adapter speed or bus mode mismatch\n", | |
284 | __FUNCTION__); | |
1da177e4 LT |
285 | return WRONG_BUS_FREQUENCY; |
286 | } | |
287 | ||
0afabe90 KK |
288 | rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bsp); |
289 | if (rc) { | |
1da177e4 | 290 | err("%s: Can't get bus operation speed\n", __FUNCTION__); |
1da177e4 LT |
291 | return WRONG_BUS_FREQUENCY; |
292 | } | |
293 | ||
0afabe90 KK |
294 | rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &msp); |
295 | if (rc) { | |
1da177e4 | 296 | err("%s: Can't get max bus operation speed\n", __FUNCTION__); |
0afabe90 | 297 | msp = bsp; |
1da177e4 LT |
298 | } |
299 | ||
300 | /* Check if there are other slots or devices on the same bus */ | |
301 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
302 | slots_not_empty = 1; | |
303 | ||
0afabe90 KK |
304 | dbg("%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, " |
305 | "max_bus_speed %d\n", __FUNCTION__, slots_not_empty, asp, | |
306 | bsp, msp); | |
1da177e4 | 307 | |
0afabe90 KK |
308 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
309 | if (rc) | |
310 | return rc; | |
1da177e4 | 311 | |
1da177e4 LT |
312 | /* turn on board, blink green LED, turn off Amber LED */ |
313 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
314 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); | |
1da177e4 LT |
315 | return rc; |
316 | } | |
1da177e4 | 317 | |
1da177e4 | 318 | /* Wait for ~1 second */ |
68c0b671 | 319 | msleep(1000); |
1da177e4 | 320 | |
2178bfad | 321 | dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status); |
1da177e4 | 322 | /* Check for a power fault */ |
2178bfad | 323 | if (p_slot->status == 0xFF) { |
1da177e4 | 324 | /* power fault occurred, but it was benign */ |
dbd7a788 | 325 | dbg("%s: power fault\n", __FUNCTION__); |
1da177e4 | 326 | rc = POWER_FAILURE; |
2178bfad | 327 | p_slot->status = 0; |
dbd7a788 | 328 | goto err_exit; |
1da177e4 LT |
329 | } |
330 | ||
dbd7a788 | 331 | if (shpchp_configure_device(p_slot)) { |
332 | err("Cannot add device at 0x%x:0x%x\n", p_slot->bus, | |
333 | p_slot->device); | |
334 | goto err_exit; | |
335 | } | |
1da177e4 | 336 | |
2178bfad | 337 | p_slot->status = 0; |
338 | p_slot->is_a_board = 0x01; | |
339 | p_slot->pwr_save = 1; | |
1da177e4 | 340 | |
dbd7a788 | 341 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 342 | |
dbd7a788 | 343 | return 0; |
1da177e4 | 344 | |
dbd7a788 | 345 | err_exit: |
dbd7a788 | 346 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
347 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
348 | if (rc) { | |
349 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); | |
dbd7a788 | 350 | return rc; |
351 | } | |
1da177e4 | 352 | |
dbd7a788 | 353 | return(rc); |
1da177e4 LT |
354 | } |
355 | ||
356 | ||
357 | /** | |
358 | * remove_board - Turns off slot and LED's | |
359 | * | |
360 | */ | |
ee138334 | 361 | static int remove_board(struct slot *p_slot) |
1da177e4 | 362 | { |
2178bfad | 363 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 364 | u8 hp_slot; |
ee138334 | 365 | int rc; |
70b60919 | 366 | |
2178bfad | 367 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
368 | return(1); |
369 | ||
2178bfad | 370 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
371 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
372 | ||
373 | dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); | |
374 | ||
1da177e4 | 375 | /* Change status to shutdown */ |
2178bfad | 376 | if (p_slot->is_a_board) |
377 | p_slot->status = 0x01; | |
1da177e4 | 378 | |
1da177e4 LT |
379 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
380 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
381 | if (rc) { | |
382 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); | |
1da177e4 LT |
383 | return rc; |
384 | } | |
1da177e4 LT |
385 | |
386 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
387 | if (rc) { | |
388 | err("%s: Issue of Set Attention command failed\n", __FUNCTION__); | |
1da177e4 LT |
389 | return rc; |
390 | } | |
1da177e4 | 391 | |
2178bfad | 392 | p_slot->pwr_save = 0; |
393 | p_slot->is_a_board = 0; | |
1da177e4 LT |
394 | |
395 | return 0; | |
396 | } | |
397 | ||
398 | ||
a246fa4e KK |
399 | struct pushbutton_work_info { |
400 | struct slot *p_slot; | |
401 | struct work_struct work; | |
402 | }; | |
403 | ||
1da177e4 LT |
404 | /** |
405 | * shpchp_pushbutton_thread | |
406 | * | |
407 | * Scheduled procedure to handle blocking stuff for the pushbuttons | |
408 | * Handles all pending events and exits. | |
409 | * | |
410 | */ | |
c4028958 | 411 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 412 | { |
c4028958 DH |
413 | struct pushbutton_work_info *info = |
414 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 415 | struct slot *p_slot = info->p_slot; |
1da177e4 | 416 | |
a246fa4e KK |
417 | mutex_lock(&p_slot->lock); |
418 | switch (p_slot->state) { | |
419 | case POWEROFF_STATE: | |
420 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 421 | shpchp_disable_slot(p_slot); |
a246fa4e | 422 | mutex_lock(&p_slot->lock); |
1da177e4 | 423 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
424 | break; |
425 | case POWERON_STATE: | |
426 | mutex_unlock(&p_slot->lock); | |
d29aadda | 427 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 428 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 429 | mutex_lock(&p_slot->lock); |
1da177e4 | 430 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
431 | break; |
432 | default: | |
433 | break; | |
434 | } | |
435 | mutex_unlock(&p_slot->lock); | |
436 | ||
437 | kfree(info); | |
438 | } | |
439 | ||
c4028958 | 440 | void queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 441 | { |
c4028958 | 442 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
443 | struct pushbutton_work_info *info; |
444 | ||
445 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
446 | if (!info) { | |
447 | err("%s: Cannot allocate memory\n", __FUNCTION__); | |
448 | return; | |
449 | } | |
450 | info->p_slot = p_slot; | |
c4028958 | 451 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
452 | |
453 | mutex_lock(&p_slot->lock); | |
454 | switch (p_slot->state) { | |
455 | case BLINKINGOFF_STATE: | |
456 | p_slot->state = POWEROFF_STATE; | |
457 | break; | |
458 | case BLINKINGON_STATE: | |
459 | p_slot->state = POWERON_STATE; | |
460 | break; | |
461 | default: | |
462 | goto out; | |
1da177e4 | 463 | } |
a246fa4e KK |
464 | queue_work(shpchp_wq, &info->work); |
465 | out: | |
466 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
467 | } |
468 | ||
1da177e4 LT |
469 | static int update_slot_info (struct slot *slot) |
470 | { | |
471 | struct hotplug_slot_info *info; | |
472 | int result; | |
473 | ||
474 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
475 | if (!info) | |
476 | return -ENOMEM; | |
477 | ||
478 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
479 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
480 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
481 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
482 | ||
483 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
484 | kfree (info); | |
485 | return result; | |
486 | } | |
487 | ||
a246fa4e KK |
488 | /* |
489 | * Note: This function must be called with slot->lock held | |
490 | */ | |
491 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 492 | { |
1da177e4 | 493 | u8 getstatus; |
1da177e4 | 494 | |
a246fa4e KK |
495 | switch (p_slot->state) { |
496 | case STATIC_STATE: | |
f7391f53 KK |
497 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
498 | if (getstatus) { | |
499 | p_slot->state = BLINKINGOFF_STATE; | |
99ff124d | 500 | info(msg_button_off, p_slot->name); |
f7391f53 KK |
501 | } else { |
502 | p_slot->state = BLINKINGON_STATE; | |
99ff124d | 503 | info(msg_button_on, p_slot->name); |
f7391f53 KK |
504 | } |
505 | /* blink green LED and turn off amber */ | |
506 | p_slot->hpc_ops->green_led_blink(p_slot); | |
507 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 508 | |
a246fa4e KK |
509 | schedule_delayed_work(&p_slot->work, 5*HZ); |
510 | break; | |
511 | case BLINKINGOFF_STATE: | |
512 | case BLINKINGON_STATE: | |
513 | /* | |
514 | * Cancel if we are still blinking; this means that we | |
515 | * press the attention again before the 5 sec. limit | |
516 | * expires to cancel hot-add or hot-remove | |
517 | */ | |
518 | info("Button cancel on Slot(%s)\n", p_slot->name); | |
519 | dbg("%s: button cancel\n", __FUNCTION__); | |
520 | cancel_delayed_work(&p_slot->work); | |
521 | if (p_slot->state == BLINKINGOFF_STATE) | |
522 | p_slot->hpc_ops->green_led_on(p_slot); | |
523 | else | |
524 | p_slot->hpc_ops->green_led_off(p_slot); | |
525 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
99ff124d | 526 | info(msg_button_cancel, p_slot->name); |
a246fa4e KK |
527 | p_slot->state = STATIC_STATE; |
528 | break; | |
529 | case POWEROFF_STATE: | |
530 | case POWERON_STATE: | |
531 | /* | |
532 | * Ignore if the slot is on power-on or power-off state; | |
533 | * this means that the previous attention button action | |
534 | * to hot-add or hot-remove is undergoing | |
535 | */ | |
536 | info("Button ignore on Slot(%s)\n", p_slot->name); | |
537 | update_slot_info(p_slot); | |
538 | break; | |
539 | default: | |
540 | warn("Not a valid state\n"); | |
541 | break; | |
542 | } | |
543 | } | |
544 | ||
c4028958 | 545 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 546 | { |
c4028958 | 547 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
548 | struct slot *p_slot = info->p_slot; |
549 | ||
550 | mutex_lock(&p_slot->lock); | |
551 | switch (info->event_type) { | |
552 | case INT_BUTTON_PRESS: | |
553 | handle_button_press_event(p_slot); | |
f7391f53 KK |
554 | break; |
555 | case INT_POWER_FAULT: | |
556 | dbg("%s: power fault\n", __FUNCTION__); | |
557 | p_slot->hpc_ops->set_attention_status(p_slot, 1); | |
558 | p_slot->hpc_ops->green_led_off(p_slot); | |
559 | break; | |
560 | default: | |
561 | update_slot_info(p_slot); | |
562 | break; | |
1da177e4 | 563 | } |
a246fa4e | 564 | mutex_unlock(&p_slot->lock); |
1da177e4 | 565 | |
f7391f53 | 566 | kfree(info); |
1da177e4 LT |
567 | } |
568 | ||
569 | ||
a246fa4e | 570 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
571 | { |
572 | u8 getstatus = 0; | |
ef3be547 | 573 | int rc, retval = -ENODEV; |
1da177e4 LT |
574 | |
575 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 576 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
577 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
578 | if (rc || !getstatus) { | |
99ff124d | 579 | info("No adapter on slot(%s)\n", p_slot->name); |
ef3be547 | 580 | goto out; |
1da177e4 LT |
581 | } |
582 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
583 | if (rc || getstatus) { | |
99ff124d | 584 | info("Latch open on slot(%s)\n", p_slot->name); |
ef3be547 | 585 | goto out; |
1da177e4 LT |
586 | } |
587 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
588 | if (rc || getstatus) { | |
99ff124d | 589 | info("Already enabled on slot(%s)\n", p_slot->name); |
ef3be547 | 590 | goto out; |
1da177e4 | 591 | } |
1da177e4 | 592 | |
2178bfad | 593 | p_slot->is_a_board = 1; |
1da177e4 LT |
594 | |
595 | /* We have to save the presence info for these slots */ | |
2178bfad | 596 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
597 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
598 | dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save); | |
1da177e4 | 599 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 600 | |
53044f35 KD |
601 | if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
602 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) | |
603 | && p_slot->ctrl->num_slots == 1) { | |
604 | /* handle amd pogo errata; this must be done before enable */ | |
605 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 606 | retval = board_added(p_slot); |
53044f35 KD |
607 | /* handle amd pogo errata; this must be done after enable */ |
608 | amd_pogo_errata_restore_misc_reg(p_slot); | |
609 | } else | |
ef3be547 | 610 | retval = board_added(p_slot); |
53044f35 | 611 | |
ef3be547 | 612 | if (retval) { |
2178bfad | 613 | p_slot->hpc_ops->get_adapter_status(p_slot, |
614 | &(p_slot->presence_save)); | |
1da177e4 | 615 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
616 | } |
617 | ||
2178bfad | 618 | update_slot_info(p_slot); |
ef3be547 KK |
619 | out: |
620 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
621 | return retval; | |
1da177e4 LT |
622 | } |
623 | ||
624 | ||
a246fa4e | 625 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 626 | { |
1da177e4 | 627 | u8 getstatus = 0; |
ef3be547 | 628 | int rc, retval = -ENODEV; |
1da177e4 LT |
629 | |
630 | if (!p_slot->ctrl) | |
ee17fd93 | 631 | return -ENODEV; |
1da177e4 | 632 | |
1da177e4 | 633 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 634 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 635 | |
ef3be547 KK |
636 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
637 | if (rc || !getstatus) { | |
99ff124d | 638 | info("No adapter on slot(%s)\n", p_slot->name); |
ef3be547 | 639 | goto out; |
1da177e4 | 640 | } |
ef3be547 KK |
641 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
642 | if (rc || getstatus) { | |
99ff124d | 643 | info("Latch open on slot(%s)\n", p_slot->name); |
ef3be547 | 644 | goto out; |
1da177e4 | 645 | } |
ef3be547 KK |
646 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
647 | if (rc || !getstatus) { | |
99ff124d | 648 | info("Already disabled slot(%s)\n", p_slot->name); |
ef3be547 | 649 | goto out; |
1da177e4 | 650 | } |
1da177e4 | 651 | |
ef3be547 | 652 | retval = remove_board(p_slot); |
2178bfad | 653 | update_slot_info(p_slot); |
ef3be547 KK |
654 | out: |
655 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
656 | return retval; | |
1da177e4 LT |
657 | } |
658 | ||
a246fa4e KK |
659 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
660 | { | |
661 | int retval = -ENODEV; | |
662 | ||
663 | mutex_lock(&p_slot->lock); | |
664 | switch (p_slot->state) { | |
665 | case BLINKINGON_STATE: | |
666 | cancel_delayed_work(&p_slot->work); | |
667 | case STATIC_STATE: | |
668 | p_slot->state = POWERON_STATE; | |
669 | mutex_unlock(&p_slot->lock); | |
670 | retval = shpchp_enable_slot(p_slot); | |
671 | mutex_lock(&p_slot->lock); | |
672 | p_slot->state = STATIC_STATE; | |
673 | break; | |
674 | case POWERON_STATE: | |
675 | info("Slot %s is already in powering on state\n", | |
676 | p_slot->name); | |
677 | break; | |
678 | case BLINKINGOFF_STATE: | |
679 | case POWEROFF_STATE: | |
680 | info("Already enabled on slot %s\n", p_slot->name); | |
681 | break; | |
682 | default: | |
683 | err("Not a valid state on slot %s\n", p_slot->name); | |
684 | break; | |
685 | } | |
686 | mutex_unlock(&p_slot->lock); | |
687 | ||
688 | return retval; | |
689 | } | |
690 | ||
691 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
692 | { | |
693 | int retval = -ENODEV; | |
694 | ||
695 | mutex_lock(&p_slot->lock); | |
696 | switch (p_slot->state) { | |
697 | case BLINKINGOFF_STATE: | |
698 | cancel_delayed_work(&p_slot->work); | |
699 | case STATIC_STATE: | |
700 | p_slot->state = POWEROFF_STATE; | |
701 | mutex_unlock(&p_slot->lock); | |
702 | retval = shpchp_disable_slot(p_slot); | |
703 | mutex_lock(&p_slot->lock); | |
704 | p_slot->state = STATIC_STATE; | |
705 | break; | |
706 | case POWEROFF_STATE: | |
707 | info("Slot %s is already in powering off state\n", | |
708 | p_slot->name); | |
709 | break; | |
710 | case BLINKINGON_STATE: | |
711 | case POWERON_STATE: | |
712 | info("Already disabled on slot %s\n", p_slot->name); | |
713 | break; | |
714 | default: | |
715 | err("Not a valid state on slot %s\n", p_slot->name); | |
716 | break; | |
717 | } | |
718 | mutex_unlock(&p_slot->lock); | |
719 | ||
720 | return retval; | |
721 | } |