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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 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 | |
0abe68ce | 60 | u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 61 | { |
1da177e4 | 62 | struct slot *p_slot; |
f7391f53 | 63 | u32 event_type; |
1da177e4 LT |
64 | |
65 | /* Attention Button Change */ | |
be7bce25 | 66 | ctrl_dbg(ctrl, "Attention button interrupt received\n"); |
9f593e30 | 67 | |
1da177e4 | 68 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 69 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 LT |
70 | |
71 | /* | |
72 | * Button pressed - See if need to TAKE ACTION!!! | |
73 | */ | |
f98ca311 | 74 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 75 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 76 | |
f7391f53 | 77 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
78 | |
79 | return 0; | |
80 | ||
81 | } | |
82 | ||
0abe68ce | 83 | u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 84 | { |
1da177e4 | 85 | struct slot *p_slot; |
1da177e4 | 86 | u8 getstatus; |
f7391f53 | 87 | u32 event_type; |
1da177e4 LT |
88 | |
89 | /* Switch Change */ | |
be7bce25 | 90 | ctrl_dbg(ctrl, "Switch interrupt received\n"); |
1da177e4 | 91 | |
1da177e4 | 92 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 93 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 | 94 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
be7bce25 TI |
95 | ctrl_dbg(ctrl, "Card present %x Power status %x\n", |
96 | p_slot->presence_save, p_slot->pwr_save); | |
1da177e4 LT |
97 | |
98 | if (getstatus) { | |
99 | /* | |
100 | * Switch opened | |
101 | */ | |
f98ca311 | 102 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 103 | event_type = INT_SWITCH_OPEN; |
2178bfad | 104 | if (p_slot->pwr_save && p_slot->presence_save) { |
f7391f53 | 105 | event_type = INT_POWER_FAULT; |
f98ca311 | 106 | ctrl_err(ctrl, "Surprise Removal of card\n"); |
1da177e4 LT |
107 | } |
108 | } else { | |
109 | /* | |
110 | * Switch closed | |
111 | */ | |
f98ca311 | 112 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 113 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
114 | } |
115 | ||
f7391f53 | 116 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 117 | |
f7391f53 | 118 | return 1; |
1da177e4 LT |
119 | } |
120 | ||
0abe68ce | 121 | u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 122 | { |
1da177e4 | 123 | struct slot *p_slot; |
f7391f53 | 124 | u32 event_type; |
1da177e4 LT |
125 | |
126 | /* Presence Change */ | |
be7bce25 | 127 | ctrl_dbg(ctrl, "Presence/Notify input change\n"); |
1da177e4 | 128 | |
1da177e4 LT |
129 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
130 | ||
9f593e30 | 131 | /* |
1da177e4 LT |
132 | * Save the presence state |
133 | */ | |
2178bfad | 134 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
135 | if (p_slot->presence_save) { | |
1da177e4 LT |
136 | /* |
137 | * Card Present | |
138 | */ | |
f98ca311 TI |
139 | ctrl_info(ctrl, "Card present on Slot(%s)\n", |
140 | slot_name(p_slot)); | |
f7391f53 | 141 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
142 | } else { |
143 | /* | |
144 | * Not Present | |
145 | */ | |
f98ca311 TI |
146 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
147 | slot_name(p_slot)); | |
f7391f53 | 148 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
149 | } |
150 | ||
f7391f53 | 151 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 152 | |
f7391f53 | 153 | return 1; |
1da177e4 LT |
154 | } |
155 | ||
0abe68ce | 156 | u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 157 | { |
1da177e4 | 158 | struct slot *p_slot; |
f7391f53 | 159 | u32 event_type; |
1da177e4 LT |
160 | |
161 | /* Power fault */ | |
be7bce25 | 162 | ctrl_dbg(ctrl, "Power fault interrupt received\n"); |
1da177e4 | 163 | |
1da177e4 LT |
164 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
165 | ||
166 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { | |
167 | /* | |
168 | * Power fault Cleared | |
169 | */ | |
f98ca311 TI |
170 | ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n", |
171 | slot_name(p_slot)); | |
2178bfad | 172 | p_slot->status = 0x00; |
f7391f53 | 173 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
174 | } else { |
175 | /* | |
176 | * Power fault | |
177 | */ | |
f98ca311 | 178 | ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 179 | event_type = INT_POWER_FAULT; |
1da177e4 | 180 | /* set power fault status for this board */ |
2178bfad | 181 | p_slot->status = 0xFF; |
be7bce25 | 182 | ctrl_info(ctrl, "Power fault bit %x set\n", hp_slot); |
1da177e4 | 183 | } |
1da177e4 | 184 | |
f7391f53 KK |
185 | queue_interrupt_event(p_slot, event_type); |
186 | ||
187 | return 1; | |
1da177e4 LT |
188 | } |
189 | ||
9f593e30 | 190 | /* The following routines constitute the bulk of the |
1da177e4 LT |
191 | hotplug controller logic |
192 | */ | |
ee138334 | 193 | static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, |
194 | enum pci_bus_speed speed) | |
9f593e30 | 195 | { |
ee138334 | 196 | int rc = 0; |
1da177e4 | 197 | |
be7bce25 | 198 | ctrl_dbg(ctrl, "Change speed to %d\n", speed); |
1da177e4 | 199 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { |
f98ca311 TI |
200 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command " |
201 | "failed\n", __func__); | |
1da177e4 LT |
202 | return WRONG_BUS_FREQUENCY; |
203 | } | |
1da177e4 LT |
204 | return rc; |
205 | } | |
206 | ||
ee138334 | 207 | static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, |
208 | u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, | |
209 | enum pci_bus_speed msp) | |
9f593e30 | 210 | { |
ee138334 | 211 | int rc = 0; |
0afabe90 KK |
212 | |
213 | /* | |
214 | * If other slots on the same bus are occupied, we cannot | |
215 | * change the bus speed. | |
216 | */ | |
217 | if (flag) { | |
218 | if (asp < bsp) { | |
be7bce25 TI |
219 | ctrl_err(ctrl, "Speed of bus %x and adapter %x " |
220 | "mismatch\n", bsp, asp); | |
0afabe90 | 221 | rc = WRONG_BUS_FREQUENCY; |
1da177e4 | 222 | } |
0afabe90 KK |
223 | return rc; |
224 | } | |
225 | ||
226 | if (asp < msp) { | |
227 | if (bsp != asp) | |
228 | rc = change_bus_speed(ctrl, pslot, asp); | |
1da177e4 | 229 | } else { |
0afabe90 KK |
230 | if (bsp != msp) |
231 | rc = change_bus_speed(ctrl, pslot, msp); | |
1da177e4 LT |
232 | } |
233 | return rc; | |
234 | } | |
235 | ||
236 | /** | |
237 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 238 | * @p_slot: target &slot |
1da177e4 | 239 | * |
26e6c66e RD |
240 | * Turns power on for the board. |
241 | * Configures board. | |
1da177e4 | 242 | */ |
ee138334 | 243 | static int board_added(struct slot *p_slot) |
1da177e4 LT |
244 | { |
245 | u8 hp_slot; | |
246 | u8 slots_not_empty = 0; | |
ee138334 | 247 | int rc = 0; |
0afabe90 | 248 | enum pci_bus_speed asp, bsp, msp; |
2178bfad | 249 | struct controller *ctrl = p_slot->ctrl; |
be7bce25 | 250 | struct pci_bus *parent = ctrl->pci_dev->subordinate; |
1da177e4 | 251 | |
2178bfad | 252 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 | 253 | |
f98ca311 TI |
254 | ctrl_dbg(ctrl, |
255 | "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", | |
256 | __func__, p_slot->device, 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) { | |
be7bce25 | 261 | ctrl_err(ctrl, "Failed to power on slot\n"); |
1da177e4 LT |
262 | return -1; |
263 | } | |
9f593e30 | 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; | |
9f593e30 | 268 | |
1da177e4 | 269 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { |
f98ca311 TI |
270 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command" |
271 | " failed\n", __func__); | |
1da177e4 LT |
272 | return WRONG_BUS_FREQUENCY; |
273 | } | |
9f593e30 | 274 | |
1da177e4 LT |
275 | /* turn on board, blink green LED, turn off Amber LED */ |
276 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
be7bce25 | 277 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
278 | return rc; |
279 | } | |
1da177e4 | 280 | } |
9f593e30 | 281 | |
0afabe90 KK |
282 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
283 | if (rc) { | |
be7bce25 TI |
284 | ctrl_err(ctrl, "Can't get adapter speed or " |
285 | "bus mode mismatch\n"); | |
1da177e4 LT |
286 | return WRONG_BUS_FREQUENCY; |
287 | } | |
288 | ||
3749c51a MW |
289 | bsp = ctrl->pci_dev->bus->cur_bus_speed; |
290 | msp = ctrl->pci_dev->bus->max_bus_speed; | |
1da177e4 LT |
291 | |
292 | /* Check if there are other slots or devices on the same bus */ | |
293 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
294 | slots_not_empty = 1; | |
295 | ||
f98ca311 TI |
296 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d," |
297 | " max_bus_speed %d\n", __func__, slots_not_empty, asp, | |
298 | bsp, msp); | |
1da177e4 | 299 | |
0afabe90 KK |
300 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
301 | if (rc) | |
302 | return rc; | |
1da177e4 | 303 | |
1da177e4 LT |
304 | /* turn on board, blink green LED, turn off Amber LED */ |
305 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
be7bce25 | 306 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
307 | return rc; |
308 | } | |
1da177e4 | 309 | |
1da177e4 | 310 | /* Wait for ~1 second */ |
68c0b671 | 311 | msleep(1000); |
1da177e4 | 312 | |
f98ca311 | 313 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, p_slot->status); |
1da177e4 | 314 | /* Check for a power fault */ |
2178bfad | 315 | if (p_slot->status == 0xFF) { |
1da177e4 | 316 | /* power fault occurred, but it was benign */ |
be7bce25 | 317 | ctrl_dbg(ctrl, "%s: Power fault\n", __func__); |
1da177e4 | 318 | rc = POWER_FAILURE; |
2178bfad | 319 | p_slot->status = 0; |
dbd7a788 | 320 | goto err_exit; |
1da177e4 LT |
321 | } |
322 | ||
dbd7a788 | 323 | if (shpchp_configure_device(p_slot)) { |
be7bce25 TI |
324 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
325 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
dbd7a788 | 326 | goto err_exit; |
327 | } | |
1da177e4 | 328 | |
2178bfad | 329 | p_slot->status = 0; |
330 | p_slot->is_a_board = 0x01; | |
331 | p_slot->pwr_save = 1; | |
1da177e4 | 332 | |
dbd7a788 | 333 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 334 | |
dbd7a788 | 335 | return 0; |
1da177e4 | 336 | |
dbd7a788 | 337 | err_exit: |
dbd7a788 | 338 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
339 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
340 | if (rc) { | |
f98ca311 TI |
341 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
342 | __func__); | |
dbd7a788 | 343 | return rc; |
344 | } | |
1da177e4 | 345 | |
dbd7a788 | 346 | return(rc); |
1da177e4 LT |
347 | } |
348 | ||
349 | ||
350 | /** | |
26e6c66e RD |
351 | * remove_board - Turns off slot and LEDs |
352 | * @p_slot: target &slot | |
1da177e4 | 353 | */ |
ee138334 | 354 | static int remove_board(struct slot *p_slot) |
1da177e4 | 355 | { |
2178bfad | 356 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 357 | u8 hp_slot; |
ee138334 | 358 | int rc; |
70b60919 | 359 | |
2178bfad | 360 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
361 | return(1); |
362 | ||
2178bfad | 363 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
364 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
365 | ||
be7bce25 | 366 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 367 | |
1da177e4 | 368 | /* Change status to shutdown */ |
2178bfad | 369 | if (p_slot->is_a_board) |
370 | p_slot->status = 0x01; | |
1da177e4 | 371 | |
1da177e4 LT |
372 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
373 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
374 | if (rc) { | |
f98ca311 TI |
375 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
376 | __func__); | |
1da177e4 LT |
377 | return rc; |
378 | } | |
9f593e30 | 379 | |
1da177e4 LT |
380 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
381 | if (rc) { | |
be7bce25 | 382 | ctrl_err(ctrl, "Issue of Set Attention command failed\n"); |
1da177e4 LT |
383 | return rc; |
384 | } | |
1da177e4 | 385 | |
2178bfad | 386 | p_slot->pwr_save = 0; |
387 | p_slot->is_a_board = 0; | |
1da177e4 LT |
388 | |
389 | return 0; | |
390 | } | |
391 | ||
392 | ||
a246fa4e KK |
393 | struct pushbutton_work_info { |
394 | struct slot *p_slot; | |
395 | struct work_struct work; | |
396 | }; | |
397 | ||
1da177e4 | 398 | /** |
26e6c66e RD |
399 | * shpchp_pushbutton_thread - handle pushbutton events |
400 | * @work: &struct work_struct to be handled | |
1da177e4 | 401 | * |
26e6c66e | 402 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 403 | * Handles all pending events and exits. |
1da177e4 | 404 | */ |
c4028958 | 405 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 406 | { |
c4028958 DH |
407 | struct pushbutton_work_info *info = |
408 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 409 | struct slot *p_slot = info->p_slot; |
1da177e4 | 410 | |
a246fa4e KK |
411 | mutex_lock(&p_slot->lock); |
412 | switch (p_slot->state) { | |
413 | case POWEROFF_STATE: | |
414 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 415 | shpchp_disable_slot(p_slot); |
a246fa4e | 416 | mutex_lock(&p_slot->lock); |
1da177e4 | 417 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
418 | break; |
419 | case POWERON_STATE: | |
420 | mutex_unlock(&p_slot->lock); | |
d29aadda | 421 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 422 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 423 | mutex_lock(&p_slot->lock); |
1da177e4 | 424 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
425 | break; |
426 | default: | |
427 | break; | |
428 | } | |
429 | mutex_unlock(&p_slot->lock); | |
430 | ||
431 | kfree(info); | |
432 | } | |
433 | ||
e325e1f0 | 434 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 435 | { |
c4028958 | 436 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
437 | struct pushbutton_work_info *info; |
438 | ||
439 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
440 | if (!info) { | |
f98ca311 TI |
441 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
442 | __func__); | |
a246fa4e KK |
443 | return; |
444 | } | |
445 | info->p_slot = p_slot; | |
c4028958 | 446 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
447 | |
448 | mutex_lock(&p_slot->lock); | |
449 | switch (p_slot->state) { | |
450 | case BLINKINGOFF_STATE: | |
451 | p_slot->state = POWEROFF_STATE; | |
452 | break; | |
453 | case BLINKINGON_STATE: | |
454 | p_slot->state = POWERON_STATE; | |
455 | break; | |
456 | default: | |
6fcaf17a | 457 | kfree(info); |
a246fa4e | 458 | goto out; |
1da177e4 | 459 | } |
a246fa4e KK |
460 | queue_work(shpchp_wq, &info->work); |
461 | out: | |
462 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
463 | } |
464 | ||
1da177e4 LT |
465 | static int update_slot_info (struct slot *slot) |
466 | { | |
467 | struct hotplug_slot_info *info; | |
468 | int result; | |
469 | ||
470 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
471 | if (!info) | |
472 | return -ENOMEM; | |
473 | ||
474 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
475 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
476 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
477 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
478 | ||
479 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
480 | kfree (info); | |
481 | return result; | |
482 | } | |
483 | ||
a246fa4e KK |
484 | /* |
485 | * Note: This function must be called with slot->lock held | |
486 | */ | |
487 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 488 | { |
1da177e4 | 489 | u8 getstatus; |
f98ca311 | 490 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 491 | |
a246fa4e KK |
492 | switch (p_slot->state) { |
493 | case STATIC_STATE: | |
f7391f53 KK |
494 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
495 | if (getstatus) { | |
496 | p_slot->state = BLINKINGOFF_STATE; | |
f98ca311 TI |
497 | ctrl_info(ctrl, "PCI slot #%s - powering off due to " |
498 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
499 | } else { |
500 | p_slot->state = BLINKINGON_STATE; | |
f98ca311 TI |
501 | ctrl_info(ctrl, "PCI slot #%s - powering on due to " |
502 | "button press.\n", slot_name(p_slot)); | |
f7391f53 KK |
503 | } |
504 | /* blink green LED and turn off amber */ | |
505 | p_slot->hpc_ops->green_led_blink(p_slot); | |
506 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 507 | |
a246fa4e KK |
508 | schedule_delayed_work(&p_slot->work, 5*HZ); |
509 | break; | |
510 | case BLINKINGOFF_STATE: | |
511 | case BLINKINGON_STATE: | |
512 | /* | |
513 | * Cancel if we are still blinking; this means that we | |
514 | * press the attention again before the 5 sec. limit | |
515 | * expires to cancel hot-add or hot-remove | |
516 | */ | |
f98ca311 TI |
517 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
518 | slot_name(p_slot)); | |
a246fa4e KK |
519 | cancel_delayed_work(&p_slot->work); |
520 | if (p_slot->state == BLINKINGOFF_STATE) | |
521 | p_slot->hpc_ops->green_led_on(p_slot); | |
522 | else | |
523 | p_slot->hpc_ops->green_led_off(p_slot); | |
524 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
f98ca311 TI |
525 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to " |
526 | "button press\n", slot_name(p_slot)); | |
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 | */ | |
f98ca311 TI |
536 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
537 | slot_name(p_slot)); | |
a246fa4e KK |
538 | update_slot_info(p_slot); |
539 | break; | |
540 | default: | |
f98ca311 | 541 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
542 | break; |
543 | } | |
544 | } | |
545 | ||
c4028958 | 546 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 547 | { |
c4028958 | 548 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
549 | struct slot *p_slot = info->p_slot; |
550 | ||
551 | mutex_lock(&p_slot->lock); | |
552 | switch (info->event_type) { | |
553 | case INT_BUTTON_PRESS: | |
554 | handle_button_press_event(p_slot); | |
f7391f53 KK |
555 | break; |
556 | case INT_POWER_FAULT: | |
be7bce25 | 557 | ctrl_dbg(p_slot->ctrl, "%s: Power fault\n", __func__); |
f7391f53 KK |
558 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
559 | p_slot->hpc_ops->green_led_off(p_slot); | |
560 | break; | |
561 | default: | |
562 | update_slot_info(p_slot); | |
563 | break; | |
1da177e4 | 564 | } |
a246fa4e | 565 | mutex_unlock(&p_slot->lock); |
1da177e4 | 566 | |
f7391f53 | 567 | kfree(info); |
1da177e4 LT |
568 | } |
569 | ||
570 | ||
a246fa4e | 571 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
572 | { |
573 | u8 getstatus = 0; | |
ef3be547 | 574 | int rc, retval = -ENODEV; |
f98ca311 | 575 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
576 | |
577 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 578 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
579 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
580 | if (rc || !getstatus) { | |
f98ca311 | 581 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 582 | goto out; |
1da177e4 LT |
583 | } |
584 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
585 | if (rc || getstatus) { | |
f98ca311 | 586 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 587 | goto out; |
1da177e4 LT |
588 | } |
589 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
590 | if (rc || getstatus) { | |
f98ca311 TI |
591 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
592 | slot_name(p_slot)); | |
ef3be547 | 593 | goto out; |
1da177e4 | 594 | } |
1da177e4 | 595 | |
2178bfad | 596 | p_slot->is_a_board = 1; |
1da177e4 LT |
597 | |
598 | /* We have to save the presence info for these slots */ | |
2178bfad | 599 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
600 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 601 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 602 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 603 | |
53044f35 KD |
604 | if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
605 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) | |
606 | && p_slot->ctrl->num_slots == 1) { | |
607 | /* handle amd pogo errata; this must be done before enable */ | |
608 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 609 | retval = board_added(p_slot); |
53044f35 KD |
610 | /* handle amd pogo errata; this must be done after enable */ |
611 | amd_pogo_errata_restore_misc_reg(p_slot); | |
612 | } else | |
ef3be547 | 613 | retval = board_added(p_slot); |
53044f35 | 614 | |
ef3be547 | 615 | if (retval) { |
2178bfad | 616 | p_slot->hpc_ops->get_adapter_status(p_slot, |
617 | &(p_slot->presence_save)); | |
1da177e4 | 618 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
619 | } |
620 | ||
2178bfad | 621 | update_slot_info(p_slot); |
ef3be547 KK |
622 | out: |
623 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
624 | return retval; | |
1da177e4 LT |
625 | } |
626 | ||
627 | ||
a246fa4e | 628 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 629 | { |
1da177e4 | 630 | u8 getstatus = 0; |
ef3be547 | 631 | int rc, retval = -ENODEV; |
f98ca311 | 632 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
633 | |
634 | if (!p_slot->ctrl) | |
ee17fd93 | 635 | return -ENODEV; |
1da177e4 | 636 | |
1da177e4 | 637 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 638 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 639 | |
ef3be547 KK |
640 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
641 | if (rc || !getstatus) { | |
f98ca311 | 642 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 643 | goto out; |
1da177e4 | 644 | } |
ef3be547 KK |
645 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
646 | if (rc || getstatus) { | |
f98ca311 | 647 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 648 | goto out; |
1da177e4 | 649 | } |
ef3be547 KK |
650 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
651 | if (rc || !getstatus) { | |
be7bce25 | 652 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
f98ca311 | 653 | slot_name(p_slot)); |
ef3be547 | 654 | goto out; |
1da177e4 | 655 | } |
1da177e4 | 656 | |
ef3be547 | 657 | retval = remove_board(p_slot); |
2178bfad | 658 | update_slot_info(p_slot); |
ef3be547 KK |
659 | out: |
660 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
661 | return retval; | |
1da177e4 LT |
662 | } |
663 | ||
a246fa4e KK |
664 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
665 | { | |
666 | int retval = -ENODEV; | |
f98ca311 | 667 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
668 | |
669 | mutex_lock(&p_slot->lock); | |
670 | switch (p_slot->state) { | |
671 | case BLINKINGON_STATE: | |
672 | cancel_delayed_work(&p_slot->work); | |
673 | case STATIC_STATE: | |
674 | p_slot->state = POWERON_STATE; | |
675 | mutex_unlock(&p_slot->lock); | |
676 | retval = shpchp_enable_slot(p_slot); | |
677 | mutex_lock(&p_slot->lock); | |
678 | p_slot->state = STATIC_STATE; | |
679 | break; | |
680 | case POWERON_STATE: | |
f98ca311 TI |
681 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
682 | slot_name(p_slot)); | |
a246fa4e KK |
683 | break; |
684 | case BLINKINGOFF_STATE: | |
685 | case POWEROFF_STATE: | |
f98ca311 TI |
686 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
687 | slot_name(p_slot)); | |
a246fa4e KK |
688 | break; |
689 | default: | |
f98ca311 TI |
690 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
691 | slot_name(p_slot)); | |
a246fa4e KK |
692 | break; |
693 | } | |
694 | mutex_unlock(&p_slot->lock); | |
695 | ||
696 | return retval; | |
697 | } | |
698 | ||
699 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
700 | { | |
701 | int retval = -ENODEV; | |
f98ca311 | 702 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
703 | |
704 | mutex_lock(&p_slot->lock); | |
705 | switch (p_slot->state) { | |
706 | case BLINKINGOFF_STATE: | |
707 | cancel_delayed_work(&p_slot->work); | |
708 | case STATIC_STATE: | |
709 | p_slot->state = POWEROFF_STATE; | |
710 | mutex_unlock(&p_slot->lock); | |
711 | retval = shpchp_disable_slot(p_slot); | |
712 | mutex_lock(&p_slot->lock); | |
713 | p_slot->state = STATIC_STATE; | |
714 | break; | |
715 | case POWEROFF_STATE: | |
f98ca311 TI |
716 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
717 | slot_name(p_slot)); | |
a246fa4e KK |
718 | break; |
719 | case BLINKINGON_STATE: | |
720 | case POWERON_STATE: | |
f98ca311 TI |
721 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
722 | slot_name(p_slot)); | |
a246fa4e KK |
723 | break; |
724 | default: | |
f98ca311 TI |
725 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
726 | slot_name(p_slot)); | |
a246fa4e KK |
727 | break; |
728 | } | |
729 | mutex_unlock(&p_slot->lock); | |
730 | ||
731 | return retval; | |
732 | } |