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 | 33 | #include <linux/pci.h> |
f7391f53 | 34 | #include <linux/workqueue.h> |
dbd7a788 | 35 | #include "../pci.h" |
1da177e4 | 36 | #include "shpchp.h" |
1da177e4 | 37 | |
c4028958 | 38 | static void interrupt_event_handler(struct work_struct *work); |
a246fa4e KK |
39 | static int shpchp_enable_slot(struct slot *p_slot); |
40 | static int shpchp_disable_slot(struct slot *p_slot); | |
1da177e4 | 41 | |
f7391f53 KK |
42 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
43 | { | |
44 | struct event_info *info; | |
45 | ||
46 | info = kmalloc(sizeof(*info), GFP_ATOMIC); | |
47 | if (!info) | |
48 | return -ENOMEM; | |
49 | ||
50 | info->event_type = event_type; | |
51 | info->p_slot = p_slot; | |
c4028958 | 52 | INIT_WORK(&info->work, interrupt_event_handler); |
f7391f53 | 53 | |
a246fa4e | 54 | schedule_work(&info->work); |
f7391f53 KK |
55 | |
56 | return 0; | |
57 | } | |
1da177e4 | 58 | |
0abe68ce | 59 | u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 60 | { |
1da177e4 | 61 | struct slot *p_slot; |
f7391f53 | 62 | u32 event_type; |
1da177e4 LT |
63 | |
64 | /* Attention Button Change */ | |
f98ca311 | 65 | ctrl_dbg(ctrl, "Attention button interrupt received.\n"); |
9f593e30 | 66 | |
1da177e4 | 67 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 68 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 LT |
69 | |
70 | /* | |
71 | * Button pressed - See if need to TAKE ACTION!!! | |
72 | */ | |
f98ca311 | 73 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 74 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 75 | |
f7391f53 | 76 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
77 | |
78 | return 0; | |
79 | ||
80 | } | |
81 | ||
0abe68ce | 82 | u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 83 | { |
1da177e4 | 84 | struct slot *p_slot; |
1da177e4 | 85 | u8 getstatus; |
f7391f53 | 86 | u32 event_type; |
1da177e4 LT |
87 | |
88 | /* Switch Change */ | |
f98ca311 | 89 | ctrl_dbg(ctrl, "Switch interrupt received.\n"); |
1da177e4 | 90 | |
1da177e4 | 91 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 92 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 | 93 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
f98ca311 TI |
94 | ctrl_dbg(ctrl, "%s: Card present %x Power status %x\n", |
95 | __func__, p_slot->presence_save, p_slot->pwr_save); | |
1da177e4 LT |
96 | |
97 | if (getstatus) { | |
98 | /* | |
99 | * Switch opened | |
100 | */ | |
f98ca311 | 101 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 102 | event_type = INT_SWITCH_OPEN; |
2178bfad | 103 | if (p_slot->pwr_save && p_slot->presence_save) { |
f7391f53 | 104 | event_type = INT_POWER_FAULT; |
f98ca311 | 105 | ctrl_err(ctrl, "Surprise Removal of card\n"); |
1da177e4 LT |
106 | } |
107 | } else { | |
108 | /* | |
109 | * Switch closed | |
110 | */ | |
f98ca311 | 111 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 112 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
113 | } |
114 | ||
f7391f53 | 115 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 116 | |
f7391f53 | 117 | return 1; |
1da177e4 LT |
118 | } |
119 | ||
0abe68ce | 120 | u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 121 | { |
1da177e4 | 122 | struct slot *p_slot; |
f7391f53 | 123 | u32 event_type; |
1da177e4 LT |
124 | |
125 | /* Presence Change */ | |
f98ca311 | 126 | ctrl_dbg(ctrl, "Presence/Notify input change.\n"); |
1da177e4 | 127 | |
1da177e4 LT |
128 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
129 | ||
9f593e30 | 130 | /* |
1da177e4 LT |
131 | * Save the presence state |
132 | */ | |
2178bfad | 133 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
134 | if (p_slot->presence_save) { | |
1da177e4 LT |
135 | /* |
136 | * Card Present | |
137 | */ | |
f98ca311 TI |
138 | ctrl_info(ctrl, "Card present on Slot(%s)\n", |
139 | slot_name(p_slot)); | |
f7391f53 | 140 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
141 | } else { |
142 | /* | |
143 | * Not Present | |
144 | */ | |
f98ca311 TI |
145 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
146 | slot_name(p_slot)); | |
f7391f53 | 147 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
148 | } |
149 | ||
f7391f53 | 150 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 151 | |
f7391f53 | 152 | return 1; |
1da177e4 LT |
153 | } |
154 | ||
0abe68ce | 155 | u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 156 | { |
1da177e4 | 157 | struct slot *p_slot; |
f7391f53 | 158 | u32 event_type; |
1da177e4 LT |
159 | |
160 | /* Power fault */ | |
f98ca311 | 161 | ctrl_dbg(ctrl, "Power fault interrupt received.\n"); |
1da177e4 | 162 | |
1da177e4 LT |
163 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
164 | ||
165 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { | |
166 | /* | |
167 | * Power fault Cleared | |
168 | */ | |
f98ca311 TI |
169 | ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n", |
170 | slot_name(p_slot)); | |
2178bfad | 171 | p_slot->status = 0x00; |
f7391f53 | 172 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
173 | } else { |
174 | /* | |
175 | * Power fault | |
176 | */ | |
f98ca311 | 177 | ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 178 | event_type = INT_POWER_FAULT; |
1da177e4 | 179 | /* set power fault status for this board */ |
2178bfad | 180 | p_slot->status = 0xFF; |
f98ca311 | 181 | ctrl_info(ctrl, "power fault bit %x set\n", hp_slot); |
1da177e4 | 182 | } |
1da177e4 | 183 | |
f7391f53 KK |
184 | queue_interrupt_event(p_slot, event_type); |
185 | ||
186 | return 1; | |
1da177e4 LT |
187 | } |
188 | ||
9f593e30 | 189 | /* The following routines constitute the bulk of the |
1da177e4 LT |
190 | hotplug controller logic |
191 | */ | |
ee138334 | 192 | static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, |
193 | enum pci_bus_speed speed) | |
9f593e30 | 194 | { |
ee138334 | 195 | int rc = 0; |
1da177e4 | 196 | |
f98ca311 | 197 | ctrl_dbg(ctrl, "%s: change to speed %d\n", __func__, speed); |
1da177e4 | 198 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { |
f98ca311 TI |
199 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command " |
200 | "failed\n", __func__); | |
1da177e4 LT |
201 | return WRONG_BUS_FREQUENCY; |
202 | } | |
1da177e4 LT |
203 | return rc; |
204 | } | |
205 | ||
ee138334 | 206 | static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, |
207 | u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, | |
208 | enum pci_bus_speed msp) | |
9f593e30 | 209 | { |
ee138334 | 210 | int rc = 0; |
0afabe90 KK |
211 | |
212 | /* | |
213 | * If other slots on the same bus are occupied, we cannot | |
214 | * change the bus speed. | |
215 | */ | |
216 | if (flag) { | |
217 | if (asp < bsp) { | |
f98ca311 TI |
218 | ctrl_err(ctrl, "%s: speed of bus %x and adapter %x " |
219 | "mismatch\n", __func__, bsp, asp); | |
0afabe90 | 220 | rc = WRONG_BUS_FREQUENCY; |
1da177e4 | 221 | } |
0afabe90 KK |
222 | return rc; |
223 | } | |
224 | ||
225 | if (asp < msp) { | |
226 | if (bsp != asp) | |
227 | rc = change_bus_speed(ctrl, pslot, asp); | |
1da177e4 | 228 | } else { |
0afabe90 KK |
229 | if (bsp != msp) |
230 | rc = change_bus_speed(ctrl, pslot, msp); | |
1da177e4 LT |
231 | } |
232 | return rc; | |
233 | } | |
234 | ||
235 | /** | |
236 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 237 | * @p_slot: target &slot |
1da177e4 | 238 | * |
26e6c66e RD |
239 | * Turns power on for the board. |
240 | * Configures board. | |
1da177e4 | 241 | */ |
ee138334 | 242 | static int board_added(struct slot *p_slot) |
1da177e4 LT |
243 | { |
244 | u8 hp_slot; | |
245 | u8 slots_not_empty = 0; | |
ee138334 | 246 | int rc = 0; |
0afabe90 | 247 | enum pci_bus_speed asp, bsp, msp; |
2178bfad | 248 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 249 | |
2178bfad | 250 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 | 251 | |
f98ca311 TI |
252 | ctrl_dbg(ctrl, |
253 | "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", | |
254 | __func__, p_slot->device, ctrl->slot_device_offset, hp_slot); | |
1da177e4 | 255 | |
1da177e4 LT |
256 | /* Power on slot without connecting to bus */ |
257 | rc = p_slot->hpc_ops->power_on_slot(p_slot); | |
258 | if (rc) { | |
f98ca311 | 259 | ctrl_err(ctrl, "%s: Failed to power on slot\n", __func__); |
1da177e4 LT |
260 | return -1; |
261 | } | |
9f593e30 | 262 | |
1da177e4 LT |
263 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
264 | if (slots_not_empty) | |
265 | return WRONG_BUS_FREQUENCY; | |
9f593e30 | 266 | |
1da177e4 | 267 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { |
f98ca311 TI |
268 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command" |
269 | " failed\n", __func__); | |
1da177e4 LT |
270 | return WRONG_BUS_FREQUENCY; |
271 | } | |
9f593e30 | 272 | |
1da177e4 LT |
273 | /* turn on board, blink green LED, turn off Amber LED */ |
274 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
f98ca311 TI |
275 | ctrl_err(ctrl, "%s: Issue of Slot Enable command" |
276 | " failed\n", __func__); | |
1da177e4 LT |
277 | return rc; |
278 | } | |
1da177e4 | 279 | } |
9f593e30 | 280 | |
0afabe90 KK |
281 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
282 | if (rc) { | |
f98ca311 TI |
283 | ctrl_err(ctrl, "%s: Can't get adapter speed or bus mode " |
284 | "mismatch\n", __func__); | |
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) { | |
f98ca311 | 290 | ctrl_err(ctrl, "%s: Can't get bus operation speed\n", __func__); |
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) { | |
f98ca311 TI |
296 | ctrl_err(ctrl, "%s: Can't get max bus operation speed\n", |
297 | __func__); | |
0afabe90 | 298 | msp = bsp; |
1da177e4 LT |
299 | } |
300 | ||
301 | /* Check if there are other slots or devices on the same bus */ | |
302 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
303 | slots_not_empty = 1; | |
304 | ||
f98ca311 TI |
305 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d," |
306 | " max_bus_speed %d\n", __func__, slots_not_empty, asp, | |
307 | bsp, msp); | |
1da177e4 | 308 | |
0afabe90 KK |
309 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
310 | if (rc) | |
311 | return rc; | |
1da177e4 | 312 | |
1da177e4 LT |
313 | /* turn on board, blink green LED, turn off Amber LED */ |
314 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
f98ca311 TI |
315 | ctrl_err(ctrl, "%s: Issue of Slot Enable command failed\n", |
316 | __func__); | |
1da177e4 LT |
317 | return rc; |
318 | } | |
1da177e4 | 319 | |
1da177e4 | 320 | /* Wait for ~1 second */ |
68c0b671 | 321 | msleep(1000); |
1da177e4 | 322 | |
f98ca311 | 323 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, p_slot->status); |
1da177e4 | 324 | /* Check for a power fault */ |
2178bfad | 325 | if (p_slot->status == 0xFF) { |
1da177e4 | 326 | /* power fault occurred, but it was benign */ |
f98ca311 | 327 | ctrl_dbg(ctrl, "%s: power fault\n", __func__); |
1da177e4 | 328 | rc = POWER_FAILURE; |
2178bfad | 329 | p_slot->status = 0; |
dbd7a788 | 330 | goto err_exit; |
1da177e4 LT |
331 | } |
332 | ||
dbd7a788 | 333 | if (shpchp_configure_device(p_slot)) { |
f98ca311 TI |
334 | ctrl_err(ctrl, "Cannot add device at 0x%x:0x%x\n", |
335 | p_slot->bus, p_slot->device); | |
dbd7a788 | 336 | goto err_exit; |
337 | } | |
1da177e4 | 338 | |
2178bfad | 339 | p_slot->status = 0; |
340 | p_slot->is_a_board = 0x01; | |
341 | p_slot->pwr_save = 1; | |
1da177e4 | 342 | |
dbd7a788 | 343 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 344 | |
dbd7a788 | 345 | return 0; |
1da177e4 | 346 | |
dbd7a788 | 347 | err_exit: |
dbd7a788 | 348 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
349 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
350 | if (rc) { | |
f98ca311 TI |
351 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
352 | __func__); | |
dbd7a788 | 353 | return rc; |
354 | } | |
1da177e4 | 355 | |
dbd7a788 | 356 | return(rc); |
1da177e4 LT |
357 | } |
358 | ||
359 | ||
360 | /** | |
26e6c66e RD |
361 | * remove_board - Turns off slot and LEDs |
362 | * @p_slot: target &slot | |
1da177e4 | 363 | */ |
ee138334 | 364 | static int remove_board(struct slot *p_slot) |
1da177e4 | 365 | { |
2178bfad | 366 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 367 | u8 hp_slot; |
ee138334 | 368 | int rc; |
70b60919 | 369 | |
2178bfad | 370 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
371 | return(1); |
372 | ||
2178bfad | 373 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
374 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
375 | ||
f98ca311 | 376 | ctrl_dbg(ctrl, "In %s, hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 377 | |
1da177e4 | 378 | /* Change status to shutdown */ |
2178bfad | 379 | if (p_slot->is_a_board) |
380 | p_slot->status = 0x01; | |
1da177e4 | 381 | |
1da177e4 LT |
382 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
383 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
384 | if (rc) { | |
f98ca311 TI |
385 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
386 | __func__); | |
1da177e4 LT |
387 | return rc; |
388 | } | |
9f593e30 | 389 | |
1da177e4 LT |
390 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
391 | if (rc) { | |
f98ca311 TI |
392 | ctrl_err(ctrl, "%s: Issue of Set Attention command failed\n", |
393 | __func__); | |
1da177e4 LT |
394 | return rc; |
395 | } | |
1da177e4 | 396 | |
2178bfad | 397 | p_slot->pwr_save = 0; |
398 | p_slot->is_a_board = 0; | |
1da177e4 LT |
399 | |
400 | return 0; | |
401 | } | |
402 | ||
403 | ||
a246fa4e KK |
404 | struct pushbutton_work_info { |
405 | struct slot *p_slot; | |
406 | struct work_struct work; | |
407 | }; | |
408 | ||
1da177e4 | 409 | /** |
26e6c66e RD |
410 | * shpchp_pushbutton_thread - handle pushbutton events |
411 | * @work: &struct work_struct to be handled | |
1da177e4 | 412 | * |
26e6c66e | 413 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 414 | * Handles all pending events and exits. |
1da177e4 | 415 | */ |
c4028958 | 416 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 417 | { |
c4028958 DH |
418 | struct pushbutton_work_info *info = |
419 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 420 | struct slot *p_slot = info->p_slot; |
1da177e4 | 421 | |
a246fa4e KK |
422 | mutex_lock(&p_slot->lock); |
423 | switch (p_slot->state) { | |
424 | case POWEROFF_STATE: | |
425 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 426 | shpchp_disable_slot(p_slot); |
a246fa4e | 427 | mutex_lock(&p_slot->lock); |
1da177e4 | 428 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
429 | break; |
430 | case POWERON_STATE: | |
431 | mutex_unlock(&p_slot->lock); | |
d29aadda | 432 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 433 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 434 | mutex_lock(&p_slot->lock); |
1da177e4 | 435 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
436 | break; |
437 | default: | |
438 | break; | |
439 | } | |
440 | mutex_unlock(&p_slot->lock); | |
441 | ||
442 | kfree(info); | |
443 | } | |
444 | ||
e325e1f0 | 445 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 446 | { |
c4028958 | 447 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
448 | struct pushbutton_work_info *info; |
449 | ||
450 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
451 | if (!info) { | |
f98ca311 TI |
452 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
453 | __func__); | |
a246fa4e KK |
454 | return; |
455 | } | |
456 | info->p_slot = p_slot; | |
c4028958 | 457 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
458 | |
459 | mutex_lock(&p_slot->lock); | |
460 | switch (p_slot->state) { | |
461 | case BLINKINGOFF_STATE: | |
462 | p_slot->state = POWEROFF_STATE; | |
463 | break; | |
464 | case BLINKINGON_STATE: | |
465 | p_slot->state = POWERON_STATE; | |
466 | break; | |
467 | default: | |
468 | goto out; | |
1da177e4 | 469 | } |
a246fa4e KK |
470 | queue_work(shpchp_wq, &info->work); |
471 | out: | |
472 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
473 | } |
474 | ||
1da177e4 LT |
475 | static int update_slot_info (struct slot *slot) |
476 | { | |
477 | struct hotplug_slot_info *info; | |
478 | int result; | |
479 | ||
480 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
481 | if (!info) | |
482 | return -ENOMEM; | |
483 | ||
484 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
485 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
486 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
487 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
488 | ||
489 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
490 | kfree (info); | |
491 | return result; | |
492 | } | |
493 | ||
a246fa4e KK |
494 | /* |
495 | * Note: This function must be called with slot->lock held | |
496 | */ | |
497 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 498 | { |
1da177e4 | 499 | u8 getstatus; |
f98ca311 | 500 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 501 | |
a246fa4e KK |
502 | switch (p_slot->state) { |
503 | case STATIC_STATE: | |
f7391f53 KK |
504 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
505 | if (getstatus) { | |
506 | p_slot->state = BLINKINGOFF_STATE; | |
f98ca311 TI |
507 | ctrl_info(ctrl, "PCI slot #%s - powering off due to " |
508 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
509 | } else { |
510 | p_slot->state = BLINKINGON_STATE; | |
f98ca311 TI |
511 | ctrl_info(ctrl, "PCI slot #%s - powering on due to " |
512 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
513 | } |
514 | /* blink green LED and turn off amber */ | |
515 | p_slot->hpc_ops->green_led_blink(p_slot); | |
516 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 517 | |
a246fa4e KK |
518 | schedule_delayed_work(&p_slot->work, 5*HZ); |
519 | break; | |
520 | case BLINKINGOFF_STATE: | |
521 | case BLINKINGON_STATE: | |
522 | /* | |
523 | * Cancel if we are still blinking; this means that we | |
524 | * press the attention again before the 5 sec. limit | |
525 | * expires to cancel hot-add or hot-remove | |
526 | */ | |
f98ca311 TI |
527 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
528 | slot_name(p_slot)); | |
529 | ctrl_dbg(ctrl, "%s: button cancel\n", __func__); | |
a246fa4e KK |
530 | cancel_delayed_work(&p_slot->work); |
531 | if (p_slot->state == BLINKINGOFF_STATE) | |
532 | p_slot->hpc_ops->green_led_on(p_slot); | |
533 | else | |
534 | p_slot->hpc_ops->green_led_off(p_slot); | |
535 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
f98ca311 TI |
536 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to " |
537 | "button press\n", slot_name(p_slot)); | |
a246fa4e KK |
538 | p_slot->state = STATIC_STATE; |
539 | break; | |
540 | case POWEROFF_STATE: | |
541 | case POWERON_STATE: | |
542 | /* | |
543 | * Ignore if the slot is on power-on or power-off state; | |
544 | * this means that the previous attention button action | |
545 | * to hot-add or hot-remove is undergoing | |
546 | */ | |
f98ca311 TI |
547 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
548 | slot_name(p_slot)); | |
a246fa4e KK |
549 | update_slot_info(p_slot); |
550 | break; | |
551 | default: | |
f98ca311 | 552 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
553 | break; |
554 | } | |
555 | } | |
556 | ||
c4028958 | 557 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 558 | { |
c4028958 | 559 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
560 | struct slot *p_slot = info->p_slot; |
561 | ||
562 | mutex_lock(&p_slot->lock); | |
563 | switch (info->event_type) { | |
564 | case INT_BUTTON_PRESS: | |
565 | handle_button_press_event(p_slot); | |
f7391f53 KK |
566 | break; |
567 | case INT_POWER_FAULT: | |
f98ca311 | 568 | ctrl_dbg(p_slot->ctrl, "%s: power fault\n", __func__); |
f7391f53 KK |
569 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
570 | p_slot->hpc_ops->green_led_off(p_slot); | |
571 | break; | |
572 | default: | |
573 | update_slot_info(p_slot); | |
574 | break; | |
1da177e4 | 575 | } |
a246fa4e | 576 | mutex_unlock(&p_slot->lock); |
1da177e4 | 577 | |
f7391f53 | 578 | kfree(info); |
1da177e4 LT |
579 | } |
580 | ||
581 | ||
a246fa4e | 582 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
583 | { |
584 | u8 getstatus = 0; | |
ef3be547 | 585 | int rc, retval = -ENODEV; |
f98ca311 | 586 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
587 | |
588 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 589 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
590 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
591 | if (rc || !getstatus) { | |
f98ca311 | 592 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 593 | goto out; |
1da177e4 LT |
594 | } |
595 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
596 | if (rc || getstatus) { | |
f98ca311 | 597 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 598 | goto out; |
1da177e4 LT |
599 | } |
600 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
601 | if (rc || getstatus) { | |
f98ca311 TI |
602 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
603 | slot_name(p_slot)); | |
ef3be547 | 604 | goto out; |
1da177e4 | 605 | } |
1da177e4 | 606 | |
2178bfad | 607 | p_slot->is_a_board = 1; |
1da177e4 LT |
608 | |
609 | /* We have to save the presence info for these slots */ | |
2178bfad | 610 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
611 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 612 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 613 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 614 | |
53044f35 KD |
615 | if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
616 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) | |
617 | && p_slot->ctrl->num_slots == 1) { | |
618 | /* handle amd pogo errata; this must be done before enable */ | |
619 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 620 | retval = board_added(p_slot); |
53044f35 KD |
621 | /* handle amd pogo errata; this must be done after enable */ |
622 | amd_pogo_errata_restore_misc_reg(p_slot); | |
623 | } else | |
ef3be547 | 624 | retval = board_added(p_slot); |
53044f35 | 625 | |
ef3be547 | 626 | if (retval) { |
2178bfad | 627 | p_slot->hpc_ops->get_adapter_status(p_slot, |
628 | &(p_slot->presence_save)); | |
1da177e4 | 629 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
630 | } |
631 | ||
2178bfad | 632 | update_slot_info(p_slot); |
ef3be547 KK |
633 | out: |
634 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
635 | return retval; | |
1da177e4 LT |
636 | } |
637 | ||
638 | ||
a246fa4e | 639 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 640 | { |
1da177e4 | 641 | u8 getstatus = 0; |
ef3be547 | 642 | int rc, retval = -ENODEV; |
f98ca311 | 643 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
644 | |
645 | if (!p_slot->ctrl) | |
ee17fd93 | 646 | return -ENODEV; |
1da177e4 | 647 | |
1da177e4 | 648 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 649 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 650 | |
ef3be547 KK |
651 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
652 | if (rc || !getstatus) { | |
f98ca311 | 653 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 654 | goto out; |
1da177e4 | 655 | } |
ef3be547 KK |
656 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
657 | if (rc || getstatus) { | |
f98ca311 | 658 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 659 | goto out; |
1da177e4 | 660 | } |
ef3be547 KK |
661 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
662 | if (rc || !getstatus) { | |
f98ca311 TI |
663 | ctrl_info(ctrl, "Already disabled slot(%s)\n", |
664 | slot_name(p_slot)); | |
ef3be547 | 665 | goto out; |
1da177e4 | 666 | } |
1da177e4 | 667 | |
ef3be547 | 668 | retval = remove_board(p_slot); |
2178bfad | 669 | update_slot_info(p_slot); |
ef3be547 KK |
670 | out: |
671 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
672 | return retval; | |
1da177e4 LT |
673 | } |
674 | ||
a246fa4e KK |
675 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
676 | { | |
677 | int retval = -ENODEV; | |
f98ca311 | 678 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
679 | |
680 | mutex_lock(&p_slot->lock); | |
681 | switch (p_slot->state) { | |
682 | case BLINKINGON_STATE: | |
683 | cancel_delayed_work(&p_slot->work); | |
684 | case STATIC_STATE: | |
685 | p_slot->state = POWERON_STATE; | |
686 | mutex_unlock(&p_slot->lock); | |
687 | retval = shpchp_enable_slot(p_slot); | |
688 | mutex_lock(&p_slot->lock); | |
689 | p_slot->state = STATIC_STATE; | |
690 | break; | |
691 | case POWERON_STATE: | |
f98ca311 TI |
692 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
693 | slot_name(p_slot)); | |
a246fa4e KK |
694 | break; |
695 | case BLINKINGOFF_STATE: | |
696 | case POWEROFF_STATE: | |
f98ca311 TI |
697 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
698 | slot_name(p_slot)); | |
a246fa4e KK |
699 | break; |
700 | default: | |
f98ca311 TI |
701 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
702 | slot_name(p_slot)); | |
a246fa4e KK |
703 | break; |
704 | } | |
705 | mutex_unlock(&p_slot->lock); | |
706 | ||
707 | return retval; | |
708 | } | |
709 | ||
710 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
711 | { | |
712 | int retval = -ENODEV; | |
f98ca311 | 713 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
714 | |
715 | mutex_lock(&p_slot->lock); | |
716 | switch (p_slot->state) { | |
717 | case BLINKINGOFF_STATE: | |
718 | cancel_delayed_work(&p_slot->work); | |
719 | case STATIC_STATE: | |
720 | p_slot->state = POWEROFF_STATE; | |
721 | mutex_unlock(&p_slot->lock); | |
722 | retval = shpchp_disable_slot(p_slot); | |
723 | mutex_lock(&p_slot->lock); | |
724 | p_slot->state = STATIC_STATE; | |
725 | break; | |
726 | case POWEROFF_STATE: | |
f98ca311 TI |
727 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
728 | slot_name(p_slot)); | |
a246fa4e KK |
729 | break; |
730 | case BLINKINGON_STATE: | |
731 | case POWERON_STATE: | |
f98ca311 TI |
732 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
733 | slot_name(p_slot)); | |
a246fa4e KK |
734 | break; |
735 | default: | |
f98ca311 TI |
736 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
737 | slot_name(p_slot)); | |
a246fa4e KK |
738 | break; |
739 | } | |
740 | mutex_unlock(&p_slot->lock); | |
741 | ||
742 | return retval; | |
743 | } |