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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 */ | |
be7bce25 | 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 */ | |
be7bce25 | 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); |
be7bce25 TI |
94 | ctrl_dbg(ctrl, "Card present %x Power status %x\n", |
95 | 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 */ | |
be7bce25 | 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 RS |
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 */ | |
be7bce25 | 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; |
be7bce25 | 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 RS |
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 | |
be7bce25 | 197 | ctrl_dbg(ctrl, "Change speed to %d\n", 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 RS |
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) { | |
be7bce25 TI |
218 | ctrl_err(ctrl, "Speed of bus %x and adapter %x " |
219 | "mismatch\n", 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; |
be7bce25 | 249 | struct pci_bus *parent = ctrl->pci_dev->subordinate; |
1da177e4 | 250 | |
2178bfad | 251 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 | 252 | |
f98ca311 TI |
253 | ctrl_dbg(ctrl, |
254 | "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", | |
255 | __func__, p_slot->device, ctrl->slot_device_offset, hp_slot); | |
1da177e4 | 256 | |
1da177e4 LT |
257 | /* Power on slot without connecting to bus */ |
258 | rc = p_slot->hpc_ops->power_on_slot(p_slot); | |
259 | if (rc) { | |
be7bce25 | 260 | ctrl_err(ctrl, "Failed to power on slot\n"); |
1da177e4 LT |
261 | return -1; |
262 | } | |
9f593e30 | 263 | |
1da177e4 LT |
264 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
265 | if (slots_not_empty) | |
266 | return WRONG_BUS_FREQUENCY; | |
9f593e30 | 267 | |
1da177e4 | 268 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { |
f98ca311 TI |
269 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command" |
270 | " failed\n", __func__); | |
1da177e4 LT |
271 | return WRONG_BUS_FREQUENCY; |
272 | } | |
9f593e30 | 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))) { | |
be7bce25 | 276 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
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) { | |
be7bce25 TI |
283 | ctrl_err(ctrl, "Can't get adapter speed or " |
284 | "bus mode mismatch\n"); | |
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) { | |
be7bce25 | 290 | ctrl_err(ctrl, "Can't get bus operation speed\n"); |
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) { | |
be7bce25 | 296 | ctrl_err(ctrl, "Can't get max bus operation speed\n"); |
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 | ||
f98ca311 TI |
304 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d," |
305 | " max_bus_speed %d\n", __func__, 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))) { | |
be7bce25 | 314 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
315 | return rc; |
316 | } | |
1da177e4 | 317 | |
1da177e4 | 318 | /* Wait for ~1 second */ |
68c0b671 | 319 | msleep(1000); |
1da177e4 | 320 | |
f98ca311 | 321 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, 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 */ |
be7bce25 | 325 | ctrl_dbg(ctrl, "%s: Power fault\n", __func__); |
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)) { |
be7bce25 TI |
332 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
333 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
dbd7a788 RS |
334 | goto err_exit; |
335 | } | |
1da177e4 | 336 | |
2178bfad RS |
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 RS |
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) { | |
f98ca311 TI |
349 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
350 | __func__); | |
dbd7a788 RS |
351 | return rc; |
352 | } | |
1da177e4 | 353 | |
dbd7a788 | 354 | return(rc); |
1da177e4 LT |
355 | } |
356 | ||
357 | ||
358 | /** | |
26e6c66e RD |
359 | * remove_board - Turns off slot and LEDs |
360 | * @p_slot: target &slot | |
1da177e4 | 361 | */ |
ee138334 | 362 | static int remove_board(struct slot *p_slot) |
1da177e4 | 363 | { |
2178bfad | 364 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 365 | u8 hp_slot; |
ee138334 | 366 | int rc; |
70b60919 | 367 | |
2178bfad | 368 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
369 | return(1); |
370 | ||
2178bfad | 371 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
372 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
373 | ||
be7bce25 | 374 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 375 | |
1da177e4 | 376 | /* Change status to shutdown */ |
2178bfad RS |
377 | if (p_slot->is_a_board) |
378 | p_slot->status = 0x01; | |
1da177e4 | 379 | |
1da177e4 LT |
380 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
381 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
382 | if (rc) { | |
f98ca311 TI |
383 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
384 | __func__); | |
1da177e4 LT |
385 | return rc; |
386 | } | |
9f593e30 | 387 | |
1da177e4 LT |
388 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
389 | if (rc) { | |
be7bce25 | 390 | ctrl_err(ctrl, "Issue of Set Attention command failed\n"); |
1da177e4 LT |
391 | return rc; |
392 | } | |
1da177e4 | 393 | |
2178bfad RS |
394 | p_slot->pwr_save = 0; |
395 | p_slot->is_a_board = 0; | |
1da177e4 LT |
396 | |
397 | return 0; | |
398 | } | |
399 | ||
400 | ||
a246fa4e KK |
401 | struct pushbutton_work_info { |
402 | struct slot *p_slot; | |
403 | struct work_struct work; | |
404 | }; | |
405 | ||
1da177e4 | 406 | /** |
26e6c66e RD |
407 | * shpchp_pushbutton_thread - handle pushbutton events |
408 | * @work: &struct work_struct to be handled | |
1da177e4 | 409 | * |
26e6c66e | 410 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 411 | * Handles all pending events and exits. |
1da177e4 | 412 | */ |
c4028958 | 413 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 414 | { |
c4028958 DH |
415 | struct pushbutton_work_info *info = |
416 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 417 | struct slot *p_slot = info->p_slot; |
1da177e4 | 418 | |
a246fa4e KK |
419 | mutex_lock(&p_slot->lock); |
420 | switch (p_slot->state) { | |
421 | case POWEROFF_STATE: | |
422 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 423 | shpchp_disable_slot(p_slot); |
a246fa4e | 424 | mutex_lock(&p_slot->lock); |
1da177e4 | 425 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
426 | break; |
427 | case POWERON_STATE: | |
428 | mutex_unlock(&p_slot->lock); | |
d29aadda | 429 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 430 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 431 | mutex_lock(&p_slot->lock); |
1da177e4 | 432 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
433 | break; |
434 | default: | |
435 | break; | |
436 | } | |
437 | mutex_unlock(&p_slot->lock); | |
438 | ||
439 | kfree(info); | |
440 | } | |
441 | ||
e325e1f0 | 442 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 443 | { |
c4028958 | 444 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
445 | struct pushbutton_work_info *info; |
446 | ||
447 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
448 | if (!info) { | |
f98ca311 TI |
449 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
450 | __func__); | |
a246fa4e KK |
451 | return; |
452 | } | |
453 | info->p_slot = p_slot; | |
c4028958 | 454 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
455 | |
456 | mutex_lock(&p_slot->lock); | |
457 | switch (p_slot->state) { | |
458 | case BLINKINGOFF_STATE: | |
459 | p_slot->state = POWEROFF_STATE; | |
460 | break; | |
461 | case BLINKINGON_STATE: | |
462 | p_slot->state = POWERON_STATE; | |
463 | break; | |
464 | default: | |
465 | goto out; | |
1da177e4 | 466 | } |
a246fa4e KK |
467 | queue_work(shpchp_wq, &info->work); |
468 | out: | |
469 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
470 | } |
471 | ||
1da177e4 LT |
472 | static int update_slot_info (struct slot *slot) |
473 | { | |
474 | struct hotplug_slot_info *info; | |
475 | int result; | |
476 | ||
477 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
478 | if (!info) | |
479 | return -ENOMEM; | |
480 | ||
481 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
482 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
483 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
484 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
485 | ||
486 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
487 | kfree (info); | |
488 | return result; | |
489 | } | |
490 | ||
a246fa4e KK |
491 | /* |
492 | * Note: This function must be called with slot->lock held | |
493 | */ | |
494 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 495 | { |
1da177e4 | 496 | u8 getstatus; |
f98ca311 | 497 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 498 | |
a246fa4e KK |
499 | switch (p_slot->state) { |
500 | case STATIC_STATE: | |
f7391f53 KK |
501 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
502 | if (getstatus) { | |
503 | p_slot->state = BLINKINGOFF_STATE; | |
f98ca311 TI |
504 | ctrl_info(ctrl, "PCI slot #%s - powering off due to " |
505 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
506 | } else { |
507 | p_slot->state = BLINKINGON_STATE; | |
f98ca311 TI |
508 | ctrl_info(ctrl, "PCI slot #%s - powering on due to " |
509 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
510 | } |
511 | /* blink green LED and turn off amber */ | |
512 | p_slot->hpc_ops->green_led_blink(p_slot); | |
513 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 514 | |
a246fa4e KK |
515 | schedule_delayed_work(&p_slot->work, 5*HZ); |
516 | break; | |
517 | case BLINKINGOFF_STATE: | |
518 | case BLINKINGON_STATE: | |
519 | /* | |
520 | * Cancel if we are still blinking; this means that we | |
521 | * press the attention again before the 5 sec. limit | |
522 | * expires to cancel hot-add or hot-remove | |
523 | */ | |
f98ca311 TI |
524 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
525 | slot_name(p_slot)); | |
a246fa4e KK |
526 | cancel_delayed_work(&p_slot->work); |
527 | if (p_slot->state == BLINKINGOFF_STATE) | |
528 | p_slot->hpc_ops->green_led_on(p_slot); | |
529 | else | |
530 | p_slot->hpc_ops->green_led_off(p_slot); | |
531 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
f98ca311 TI |
532 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to " |
533 | "button press\n", slot_name(p_slot)); | |
a246fa4e KK |
534 | p_slot->state = STATIC_STATE; |
535 | break; | |
536 | case POWEROFF_STATE: | |
537 | case POWERON_STATE: | |
538 | /* | |
539 | * Ignore if the slot is on power-on or power-off state; | |
540 | * this means that the previous attention button action | |
541 | * to hot-add or hot-remove is undergoing | |
542 | */ | |
f98ca311 TI |
543 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
544 | slot_name(p_slot)); | |
a246fa4e KK |
545 | update_slot_info(p_slot); |
546 | break; | |
547 | default: | |
f98ca311 | 548 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
549 | break; |
550 | } | |
551 | } | |
552 | ||
c4028958 | 553 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 554 | { |
c4028958 | 555 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
556 | struct slot *p_slot = info->p_slot; |
557 | ||
558 | mutex_lock(&p_slot->lock); | |
559 | switch (info->event_type) { | |
560 | case INT_BUTTON_PRESS: | |
561 | handle_button_press_event(p_slot); | |
f7391f53 KK |
562 | break; |
563 | case INT_POWER_FAULT: | |
be7bce25 | 564 | ctrl_dbg(p_slot->ctrl, "%s: Power fault\n", __func__); |
f7391f53 KK |
565 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
566 | p_slot->hpc_ops->green_led_off(p_slot); | |
567 | break; | |
568 | default: | |
569 | update_slot_info(p_slot); | |
570 | break; | |
1da177e4 | 571 | } |
a246fa4e | 572 | mutex_unlock(&p_slot->lock); |
1da177e4 | 573 | |
f7391f53 | 574 | kfree(info); |
1da177e4 LT |
575 | } |
576 | ||
577 | ||
a246fa4e | 578 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
579 | { |
580 | u8 getstatus = 0; | |
ef3be547 | 581 | int rc, retval = -ENODEV; |
f98ca311 | 582 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
583 | |
584 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 585 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
586 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
587 | if (rc || !getstatus) { | |
f98ca311 | 588 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 589 | goto out; |
1da177e4 LT |
590 | } |
591 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
592 | if (rc || getstatus) { | |
f98ca311 | 593 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 594 | goto out; |
1da177e4 LT |
595 | } |
596 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
597 | if (rc || getstatus) { | |
f98ca311 TI |
598 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
599 | slot_name(p_slot)); | |
ef3be547 | 600 | goto out; |
1da177e4 | 601 | } |
1da177e4 | 602 | |
2178bfad | 603 | p_slot->is_a_board = 1; |
1da177e4 LT |
604 | |
605 | /* We have to save the presence info for these slots */ | |
2178bfad RS |
606 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
607 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 608 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 609 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 610 | |
53044f35 KD |
611 | if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
612 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) | |
613 | && p_slot->ctrl->num_slots == 1) { | |
614 | /* handle amd pogo errata; this must be done before enable */ | |
615 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 616 | retval = board_added(p_slot); |
53044f35 KD |
617 | /* handle amd pogo errata; this must be done after enable */ |
618 | amd_pogo_errata_restore_misc_reg(p_slot); | |
619 | } else | |
ef3be547 | 620 | retval = board_added(p_slot); |
53044f35 | 621 | |
ef3be547 | 622 | if (retval) { |
2178bfad RS |
623 | p_slot->hpc_ops->get_adapter_status(p_slot, |
624 | &(p_slot->presence_save)); | |
1da177e4 | 625 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
626 | } |
627 | ||
2178bfad | 628 | update_slot_info(p_slot); |
ef3be547 KK |
629 | out: |
630 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
631 | return retval; | |
1da177e4 LT |
632 | } |
633 | ||
634 | ||
a246fa4e | 635 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 636 | { |
1da177e4 | 637 | u8 getstatus = 0; |
ef3be547 | 638 | int rc, retval = -ENODEV; |
f98ca311 | 639 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
640 | |
641 | if (!p_slot->ctrl) | |
ee17fd93 | 642 | return -ENODEV; |
1da177e4 | 643 | |
1da177e4 | 644 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 645 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 646 | |
ef3be547 KK |
647 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
648 | if (rc || !getstatus) { | |
f98ca311 | 649 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 650 | goto out; |
1da177e4 | 651 | } |
ef3be547 KK |
652 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
653 | if (rc || getstatus) { | |
f98ca311 | 654 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 655 | goto out; |
1da177e4 | 656 | } |
ef3be547 KK |
657 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
658 | if (rc || !getstatus) { | |
be7bce25 | 659 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
f98ca311 | 660 | slot_name(p_slot)); |
ef3be547 | 661 | goto out; |
1da177e4 | 662 | } |
1da177e4 | 663 | |
ef3be547 | 664 | retval = remove_board(p_slot); |
2178bfad | 665 | update_slot_info(p_slot); |
ef3be547 KK |
666 | out: |
667 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
668 | return retval; | |
1da177e4 LT |
669 | } |
670 | ||
a246fa4e KK |
671 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
672 | { | |
673 | int retval = -ENODEV; | |
f98ca311 | 674 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
675 | |
676 | mutex_lock(&p_slot->lock); | |
677 | switch (p_slot->state) { | |
678 | case BLINKINGON_STATE: | |
679 | cancel_delayed_work(&p_slot->work); | |
680 | case STATIC_STATE: | |
681 | p_slot->state = POWERON_STATE; | |
682 | mutex_unlock(&p_slot->lock); | |
683 | retval = shpchp_enable_slot(p_slot); | |
684 | mutex_lock(&p_slot->lock); | |
685 | p_slot->state = STATIC_STATE; | |
686 | break; | |
687 | case POWERON_STATE: | |
f98ca311 TI |
688 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
689 | slot_name(p_slot)); | |
a246fa4e KK |
690 | break; |
691 | case BLINKINGOFF_STATE: | |
692 | case POWEROFF_STATE: | |
f98ca311 TI |
693 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
694 | slot_name(p_slot)); | |
a246fa4e KK |
695 | break; |
696 | default: | |
f98ca311 TI |
697 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
698 | slot_name(p_slot)); | |
a246fa4e KK |
699 | break; |
700 | } | |
701 | mutex_unlock(&p_slot->lock); | |
702 | ||
703 | return retval; | |
704 | } | |
705 | ||
706 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
707 | { | |
708 | int retval = -ENODEV; | |
f98ca311 | 709 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
710 | |
711 | mutex_lock(&p_slot->lock); | |
712 | switch (p_slot->state) { | |
713 | case BLINKINGOFF_STATE: | |
714 | cancel_delayed_work(&p_slot->work); | |
715 | case STATIC_STATE: | |
716 | p_slot->state = POWEROFF_STATE; | |
717 | mutex_unlock(&p_slot->lock); | |
718 | retval = shpchp_disable_slot(p_slot); | |
719 | mutex_lock(&p_slot->lock); | |
720 | p_slot->state = STATIC_STATE; | |
721 | break; | |
722 | case POWEROFF_STATE: | |
f98ca311 TI |
723 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
724 | slot_name(p_slot)); | |
a246fa4e KK |
725 | break; |
726 | case BLINKINGON_STATE: | |
727 | case POWERON_STATE: | |
f98ca311 TI |
728 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
729 | slot_name(p_slot)); | |
a246fa4e KK |
730 | break; |
731 | default: | |
f98ca311 TI |
732 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
733 | slot_name(p_slot)); | |
a246fa4e KK |
734 | break; |
735 | } | |
736 | mutex_unlock(&p_slot->lock); | |
737 | ||
738 | return retval; | |
739 | } |