Commit | Line | Data |
---|---|---|
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> |
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 | |
f652e7d2 | 54 | queue_work(p_slot->wq, &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 | 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 | ||
3c78bc61 | 165 | if (!(p_slot->hpc_ops->query_power_fault(p_slot))) { |
1da177e4 LT |
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 | 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))) { |
227f0647 RD |
199 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
200 | __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) { | |
227f0647 RD |
218 | ctrl_err(ctrl, "Speed of bus %x and adapter %x mismatch\n", |
219 | 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 | |
227f0647 | 253 | ctrl_dbg(ctrl, "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", |
f98ca311 | 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) { | |
be7bce25 | 259 | ctrl_err(ctrl, "Failed to power on slot\n"); |
1da177e4 LT |
260 | return -1; |
261 | } | |
9f593e30 | 262 | |
1da177e4 | 263 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
1da177e4 | 264 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { |
227f0647 RD |
265 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
266 | __func__); | |
1da177e4 LT |
267 | return WRONG_BUS_FREQUENCY; |
268 | } | |
9f593e30 | 269 | |
1da177e4 LT |
270 | /* turn on board, blink green LED, turn off Amber LED */ |
271 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
be7bce25 | 272 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
273 | return rc; |
274 | } | |
1da177e4 | 275 | } |
9f593e30 | 276 | |
0afabe90 KK |
277 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
278 | if (rc) { | |
227f0647 | 279 | ctrl_err(ctrl, "Can't get adapter speed or bus mode mismatch\n"); |
1da177e4 LT |
280 | return WRONG_BUS_FREQUENCY; |
281 | } | |
282 | ||
3749c51a MW |
283 | bsp = ctrl->pci_dev->bus->cur_bus_speed; |
284 | msp = ctrl->pci_dev->bus->max_bus_speed; | |
1da177e4 LT |
285 | |
286 | /* Check if there are other slots or devices on the same bus */ | |
287 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
288 | slots_not_empty = 1; | |
289 | ||
227f0647 RD |
290 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, max_bus_speed %d\n", |
291 | __func__, slots_not_empty, asp, | |
f98ca311 | 292 | bsp, msp); |
1da177e4 | 293 | |
0afabe90 KK |
294 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
295 | if (rc) | |
296 | return rc; | |
1da177e4 | 297 | |
1da177e4 LT |
298 | /* turn on board, blink green LED, turn off Amber LED */ |
299 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
be7bce25 | 300 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
301 | return rc; |
302 | } | |
1da177e4 | 303 | |
1da177e4 | 304 | /* Wait for ~1 second */ |
68c0b671 | 305 | msleep(1000); |
1da177e4 | 306 | |
f98ca311 | 307 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, p_slot->status); |
1da177e4 | 308 | /* Check for a power fault */ |
2178bfad | 309 | if (p_slot->status == 0xFF) { |
1da177e4 | 310 | /* power fault occurred, but it was benign */ |
be7bce25 | 311 | ctrl_dbg(ctrl, "%s: Power fault\n", __func__); |
1da177e4 | 312 | rc = POWER_FAILURE; |
2178bfad | 313 | p_slot->status = 0; |
dbd7a788 | 314 | goto err_exit; |
1da177e4 LT |
315 | } |
316 | ||
dbd7a788 | 317 | if (shpchp_configure_device(p_slot)) { |
be7bce25 TI |
318 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
319 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
dbd7a788 | 320 | goto err_exit; |
321 | } | |
1da177e4 | 322 | |
2178bfad | 323 | p_slot->status = 0; |
324 | p_slot->is_a_board = 0x01; | |
325 | p_slot->pwr_save = 1; | |
1da177e4 | 326 | |
dbd7a788 | 327 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 328 | |
dbd7a788 | 329 | return 0; |
1da177e4 | 330 | |
dbd7a788 | 331 | err_exit: |
dbd7a788 | 332 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
333 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
334 | if (rc) { | |
f98ca311 TI |
335 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
336 | __func__); | |
dbd7a788 | 337 | return rc; |
338 | } | |
1da177e4 | 339 | |
dbd7a788 | 340 | return(rc); |
1da177e4 LT |
341 | } |
342 | ||
343 | ||
344 | /** | |
26e6c66e RD |
345 | * remove_board - Turns off slot and LEDs |
346 | * @p_slot: target &slot | |
1da177e4 | 347 | */ |
ee138334 | 348 | static int remove_board(struct slot *p_slot) |
1da177e4 | 349 | { |
2178bfad | 350 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 351 | u8 hp_slot; |
ee138334 | 352 | int rc; |
70b60919 | 353 | |
2178bfad | 354 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
355 | return(1); |
356 | ||
2178bfad | 357 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
358 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
359 | ||
be7bce25 | 360 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 361 | |
1da177e4 | 362 | /* Change status to shutdown */ |
2178bfad | 363 | if (p_slot->is_a_board) |
364 | p_slot->status = 0x01; | |
1da177e4 | 365 | |
1da177e4 LT |
366 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
367 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
368 | if (rc) { | |
f98ca311 TI |
369 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
370 | __func__); | |
1da177e4 LT |
371 | return rc; |
372 | } | |
9f593e30 | 373 | |
1da177e4 LT |
374 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
375 | if (rc) { | |
be7bce25 | 376 | ctrl_err(ctrl, "Issue of Set Attention command failed\n"); |
1da177e4 LT |
377 | return rc; |
378 | } | |
1da177e4 | 379 | |
2178bfad | 380 | p_slot->pwr_save = 0; |
381 | p_slot->is_a_board = 0; | |
1da177e4 LT |
382 | |
383 | return 0; | |
384 | } | |
385 | ||
386 | ||
a246fa4e KK |
387 | struct pushbutton_work_info { |
388 | struct slot *p_slot; | |
389 | struct work_struct work; | |
390 | }; | |
391 | ||
1da177e4 | 392 | /** |
26e6c66e RD |
393 | * shpchp_pushbutton_thread - handle pushbutton events |
394 | * @work: &struct work_struct to be handled | |
1da177e4 | 395 | * |
26e6c66e | 396 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 397 | * Handles all pending events and exits. |
1da177e4 | 398 | */ |
c4028958 | 399 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 400 | { |
c4028958 DH |
401 | struct pushbutton_work_info *info = |
402 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 403 | struct slot *p_slot = info->p_slot; |
1da177e4 | 404 | |
a246fa4e KK |
405 | mutex_lock(&p_slot->lock); |
406 | switch (p_slot->state) { | |
407 | case POWEROFF_STATE: | |
408 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 409 | shpchp_disable_slot(p_slot); |
a246fa4e | 410 | mutex_lock(&p_slot->lock); |
1da177e4 | 411 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
412 | break; |
413 | case POWERON_STATE: | |
414 | mutex_unlock(&p_slot->lock); | |
d29aadda | 415 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 416 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 417 | mutex_lock(&p_slot->lock); |
1da177e4 | 418 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
419 | break; |
420 | default: | |
421 | break; | |
422 | } | |
423 | mutex_unlock(&p_slot->lock); | |
424 | ||
425 | kfree(info); | |
426 | } | |
427 | ||
e325e1f0 | 428 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 429 | { |
c4028958 | 430 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
431 | struct pushbutton_work_info *info; |
432 | ||
433 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
434 | if (!info) { | |
f98ca311 TI |
435 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
436 | __func__); | |
a246fa4e KK |
437 | return; |
438 | } | |
439 | info->p_slot = p_slot; | |
c4028958 | 440 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
441 | |
442 | mutex_lock(&p_slot->lock); | |
443 | switch (p_slot->state) { | |
444 | case BLINKINGOFF_STATE: | |
445 | p_slot->state = POWEROFF_STATE; | |
446 | break; | |
447 | case BLINKINGON_STATE: | |
448 | p_slot->state = POWERON_STATE; | |
449 | break; | |
450 | default: | |
6fcaf17a | 451 | kfree(info); |
a246fa4e | 452 | goto out; |
1da177e4 | 453 | } |
f652e7d2 | 454 | queue_work(p_slot->wq, &info->work); |
a246fa4e KK |
455 | out: |
456 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
457 | } |
458 | ||
1da177e4 LT |
459 | static int update_slot_info (struct slot *slot) |
460 | { | |
461 | struct hotplug_slot_info *info; | |
462 | int result; | |
463 | ||
464 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
465 | if (!info) | |
466 | return -ENOMEM; | |
467 | ||
468 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
469 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
470 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
471 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
472 | ||
473 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
474 | kfree (info); | |
475 | return result; | |
476 | } | |
477 | ||
a246fa4e KK |
478 | /* |
479 | * Note: This function must be called with slot->lock held | |
480 | */ | |
481 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 482 | { |
1da177e4 | 483 | u8 getstatus; |
f98ca311 | 484 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 485 | |
a246fa4e KK |
486 | switch (p_slot->state) { |
487 | case STATIC_STATE: | |
f7391f53 KK |
488 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
489 | if (getstatus) { | |
490 | p_slot->state = BLINKINGOFF_STATE; | |
227f0647 RD |
491 | ctrl_info(ctrl, "PCI slot #%s - powering off due to button press\n", |
492 | slot_name(p_slot)); | |
f7391f53 KK |
493 | } else { |
494 | p_slot->state = BLINKINGON_STATE; | |
227f0647 RD |
495 | ctrl_info(ctrl, "PCI slot #%s - powering on due to button press\n", |
496 | slot_name(p_slot)); | |
f7391f53 KK |
497 | } |
498 | /* blink green LED and turn off amber */ | |
499 | p_slot->hpc_ops->green_led_blink(p_slot); | |
500 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 501 | |
f652e7d2 | 502 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
a246fa4e KK |
503 | break; |
504 | case BLINKINGOFF_STATE: | |
505 | case BLINKINGON_STATE: | |
506 | /* | |
507 | * Cancel if we are still blinking; this means that we | |
508 | * press the attention again before the 5 sec. limit | |
509 | * expires to cancel hot-add or hot-remove | |
510 | */ | |
f98ca311 TI |
511 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
512 | slot_name(p_slot)); | |
a246fa4e KK |
513 | cancel_delayed_work(&p_slot->work); |
514 | if (p_slot->state == BLINKINGOFF_STATE) | |
515 | p_slot->hpc_ops->green_led_on(p_slot); | |
516 | else | |
517 | p_slot->hpc_ops->green_led_off(p_slot); | |
518 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
227f0647 RD |
519 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to button press\n", |
520 | slot_name(p_slot)); | |
a246fa4e KK |
521 | p_slot->state = STATIC_STATE; |
522 | break; | |
523 | case POWEROFF_STATE: | |
524 | case POWERON_STATE: | |
525 | /* | |
526 | * Ignore if the slot is on power-on or power-off state; | |
527 | * this means that the previous attention button action | |
528 | * to hot-add or hot-remove is undergoing | |
529 | */ | |
f98ca311 TI |
530 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
531 | slot_name(p_slot)); | |
a246fa4e KK |
532 | update_slot_info(p_slot); |
533 | break; | |
534 | default: | |
f98ca311 | 535 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
536 | break; |
537 | } | |
538 | } | |
539 | ||
c4028958 | 540 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 541 | { |
c4028958 | 542 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
543 | struct slot *p_slot = info->p_slot; |
544 | ||
545 | mutex_lock(&p_slot->lock); | |
546 | switch (info->event_type) { | |
547 | case INT_BUTTON_PRESS: | |
548 | handle_button_press_event(p_slot); | |
f7391f53 KK |
549 | break; |
550 | case INT_POWER_FAULT: | |
be7bce25 | 551 | ctrl_dbg(p_slot->ctrl, "%s: Power fault\n", __func__); |
f7391f53 KK |
552 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
553 | p_slot->hpc_ops->green_led_off(p_slot); | |
554 | break; | |
555 | default: | |
556 | update_slot_info(p_slot); | |
557 | break; | |
1da177e4 | 558 | } |
a246fa4e | 559 | mutex_unlock(&p_slot->lock); |
1da177e4 | 560 | |
f7391f53 | 561 | kfree(info); |
1da177e4 LT |
562 | } |
563 | ||
564 | ||
a246fa4e | 565 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
566 | { |
567 | u8 getstatus = 0; | |
ef3be547 | 568 | int rc, retval = -ENODEV; |
f98ca311 | 569 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
570 | |
571 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 572 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
573 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
574 | if (rc || !getstatus) { | |
f98ca311 | 575 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 576 | goto out; |
1da177e4 LT |
577 | } |
578 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
579 | if (rc || getstatus) { | |
f98ca311 | 580 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 581 | goto out; |
1da177e4 LT |
582 | } |
583 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
584 | if (rc || getstatus) { | |
f98ca311 TI |
585 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
586 | slot_name(p_slot)); | |
ef3be547 | 587 | goto out; |
1da177e4 | 588 | } |
1da177e4 | 589 | |
2178bfad | 590 | p_slot->is_a_board = 1; |
1da177e4 LT |
591 | |
592 | /* We have to save the presence info for these slots */ | |
2178bfad | 593 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
594 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 595 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 596 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 597 | |
53044f35 KD |
598 | if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
599 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) | |
600 | && p_slot->ctrl->num_slots == 1) { | |
601 | /* handle amd pogo errata; this must be done before enable */ | |
602 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 603 | retval = board_added(p_slot); |
53044f35 KD |
604 | /* handle amd pogo errata; this must be done after enable */ |
605 | amd_pogo_errata_restore_misc_reg(p_slot); | |
606 | } else | |
ef3be547 | 607 | retval = board_added(p_slot); |
53044f35 | 608 | |
ef3be547 | 609 | if (retval) { |
2178bfad | 610 | p_slot->hpc_ops->get_adapter_status(p_slot, |
611 | &(p_slot->presence_save)); | |
1da177e4 | 612 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
613 | } |
614 | ||
2178bfad | 615 | update_slot_info(p_slot); |
ef3be547 KK |
616 | out: |
617 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
618 | return retval; | |
1da177e4 LT |
619 | } |
620 | ||
621 | ||
a246fa4e | 622 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 623 | { |
1da177e4 | 624 | u8 getstatus = 0; |
ef3be547 | 625 | int rc, retval = -ENODEV; |
f98ca311 | 626 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
627 | |
628 | if (!p_slot->ctrl) | |
ee17fd93 | 629 | return -ENODEV; |
1da177e4 | 630 | |
1da177e4 | 631 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 632 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 633 | |
ef3be547 KK |
634 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
635 | if (rc || !getstatus) { | |
f98ca311 | 636 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 637 | goto out; |
1da177e4 | 638 | } |
ef3be547 KK |
639 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
640 | if (rc || getstatus) { | |
f98ca311 | 641 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 642 | goto out; |
1da177e4 | 643 | } |
ef3be547 KK |
644 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
645 | if (rc || !getstatus) { | |
be7bce25 | 646 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
f98ca311 | 647 | slot_name(p_slot)); |
ef3be547 | 648 | goto out; |
1da177e4 | 649 | } |
1da177e4 | 650 | |
ef3be547 | 651 | retval = remove_board(p_slot); |
2178bfad | 652 | update_slot_info(p_slot); |
ef3be547 KK |
653 | out: |
654 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
655 | return retval; | |
1da177e4 LT |
656 | } |
657 | ||
a246fa4e KK |
658 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
659 | { | |
660 | int retval = -ENODEV; | |
f98ca311 | 661 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
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: | |
f98ca311 TI |
675 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
676 | slot_name(p_slot)); | |
a246fa4e KK |
677 | break; |
678 | case BLINKINGOFF_STATE: | |
679 | case POWEROFF_STATE: | |
f98ca311 TI |
680 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
681 | slot_name(p_slot)); | |
a246fa4e KK |
682 | break; |
683 | default: | |
f98ca311 TI |
684 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
685 | slot_name(p_slot)); | |
a246fa4e KK |
686 | break; |
687 | } | |
688 | mutex_unlock(&p_slot->lock); | |
689 | ||
690 | return retval; | |
691 | } | |
692 | ||
693 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
694 | { | |
695 | int retval = -ENODEV; | |
f98ca311 | 696 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
697 | |
698 | mutex_lock(&p_slot->lock); | |
699 | switch (p_slot->state) { | |
700 | case BLINKINGOFF_STATE: | |
701 | cancel_delayed_work(&p_slot->work); | |
702 | case STATIC_STATE: | |
703 | p_slot->state = POWEROFF_STATE; | |
704 | mutex_unlock(&p_slot->lock); | |
705 | retval = shpchp_disable_slot(p_slot); | |
706 | mutex_lock(&p_slot->lock); | |
707 | p_slot->state = STATIC_STATE; | |
708 | break; | |
709 | case POWEROFF_STATE: | |
f98ca311 TI |
710 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
711 | slot_name(p_slot)); | |
a246fa4e KK |
712 | break; |
713 | case BLINKINGON_STATE: | |
714 | case POWERON_STATE: | |
f98ca311 TI |
715 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
716 | slot_name(p_slot)); | |
a246fa4e KK |
717 | break; |
718 | default: | |
f98ca311 TI |
719 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
720 | slot_name(p_slot)); | |
a246fa4e KK |
721 | break; |
722 | } | |
723 | mutex_unlock(&p_slot->lock); | |
724 | ||
725 | return retval; | |
726 | } |