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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> | |
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 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 | ||
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 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); |
79e50e72 QL |
198 | rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed); |
199 | if (rc) { | |
227f0647 RD |
200 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
201 | __func__); | |
1da177e4 LT |
202 | return WRONG_BUS_FREQUENCY; |
203 | } | |
1da177e4 LT |
204 | return rc; |
205 | } | |
206 | ||
ee138334 RS |
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) { | |
227f0647 RD |
219 | ctrl_err(ctrl, "Speed of bus %x and adapter %x mismatch\n", |
220 | 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 | |
227f0647 | 254 | ctrl_dbg(ctrl, "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", |
f98ca311 | 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 | 264 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
79e50e72 QL |
265 | rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz); |
266 | if (rc) { | |
227f0647 RD |
267 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
268 | __func__); | |
1da177e4 LT |
269 | return WRONG_BUS_FREQUENCY; |
270 | } | |
9f593e30 | 271 | |
1da177e4 | 272 | /* turn on board, blink green LED, turn off Amber LED */ |
79e50e72 QL |
273 | rc = p_slot->hpc_ops->slot_enable(p_slot); |
274 | if (rc) { | |
be7bce25 | 275 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
276 | return rc; |
277 | } | |
1da177e4 | 278 | } |
9f593e30 | 279 | |
0afabe90 KK |
280 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
281 | if (rc) { | |
227f0647 | 282 | ctrl_err(ctrl, "Can't get adapter speed or bus mode mismatch\n"); |
1da177e4 LT |
283 | return WRONG_BUS_FREQUENCY; |
284 | } | |
285 | ||
93fa9d32 MA |
286 | bsp = ctrl->pci_dev->subordinate->cur_bus_speed; |
287 | msp = ctrl->pci_dev->subordinate->max_bus_speed; | |
1da177e4 LT |
288 | |
289 | /* Check if there are other slots or devices on the same bus */ | |
290 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
291 | slots_not_empty = 1; | |
292 | ||
227f0647 RD |
293 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, max_bus_speed %d\n", |
294 | __func__, slots_not_empty, asp, | |
f98ca311 | 295 | bsp, msp); |
1da177e4 | 296 | |
0afabe90 KK |
297 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
298 | if (rc) | |
299 | return rc; | |
1da177e4 | 300 | |
1da177e4 | 301 | /* turn on board, blink green LED, turn off Amber LED */ |
79e50e72 QL |
302 | rc = p_slot->hpc_ops->slot_enable(p_slot); |
303 | if (rc) { | |
be7bce25 | 304 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
305 | return rc; |
306 | } | |
1da177e4 | 307 | |
1da177e4 | 308 | /* Wait for ~1 second */ |
68c0b671 | 309 | msleep(1000); |
1da177e4 | 310 | |
f98ca311 | 311 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, p_slot->status); |
1da177e4 | 312 | /* Check for a power fault */ |
2178bfad | 313 | if (p_slot->status == 0xFF) { |
1da177e4 | 314 | /* power fault occurred, but it was benign */ |
be7bce25 | 315 | ctrl_dbg(ctrl, "%s: Power fault\n", __func__); |
1da177e4 | 316 | rc = POWER_FAILURE; |
2178bfad | 317 | p_slot->status = 0; |
dbd7a788 | 318 | goto err_exit; |
1da177e4 LT |
319 | } |
320 | ||
dbd7a788 | 321 | if (shpchp_configure_device(p_slot)) { |
be7bce25 TI |
322 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
323 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
dbd7a788 RS |
324 | goto err_exit; |
325 | } | |
1da177e4 | 326 | |
2178bfad RS |
327 | p_slot->status = 0; |
328 | p_slot->is_a_board = 0x01; | |
329 | p_slot->pwr_save = 1; | |
1da177e4 | 330 | |
dbd7a788 | 331 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 332 | |
dbd7a788 | 333 | return 0; |
1da177e4 | 334 | |
dbd7a788 | 335 | err_exit: |
dbd7a788 RS |
336 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
337 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
338 | if (rc) { | |
f98ca311 TI |
339 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
340 | __func__); | |
dbd7a788 RS |
341 | return rc; |
342 | } | |
1da177e4 | 343 | |
dbd7a788 | 344 | return(rc); |
1da177e4 LT |
345 | } |
346 | ||
347 | ||
348 | /** | |
26e6c66e RD |
349 | * remove_board - Turns off slot and LEDs |
350 | * @p_slot: target &slot | |
1da177e4 | 351 | */ |
ee138334 | 352 | static int remove_board(struct slot *p_slot) |
1da177e4 | 353 | { |
2178bfad | 354 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 355 | u8 hp_slot; |
ee138334 | 356 | int rc; |
70b60919 | 357 | |
2178bfad | 358 | if (shpchp_unconfigure_device(p_slot)) |
1da177e4 LT |
359 | return(1); |
360 | ||
2178bfad | 361 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
362 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
363 | ||
be7bce25 | 364 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 365 | |
1da177e4 | 366 | /* Change status to shutdown */ |
2178bfad RS |
367 | if (p_slot->is_a_board) |
368 | p_slot->status = 0x01; | |
1da177e4 | 369 | |
1da177e4 LT |
370 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
371 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
372 | if (rc) { | |
f98ca311 TI |
373 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
374 | __func__); | |
1da177e4 LT |
375 | return rc; |
376 | } | |
9f593e30 | 377 | |
1da177e4 LT |
378 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
379 | if (rc) { | |
be7bce25 | 380 | ctrl_err(ctrl, "Issue of Set Attention command failed\n"); |
1da177e4 LT |
381 | return rc; |
382 | } | |
1da177e4 | 383 | |
2178bfad RS |
384 | p_slot->pwr_save = 0; |
385 | p_slot->is_a_board = 0; | |
1da177e4 LT |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
390 | ||
a246fa4e KK |
391 | struct pushbutton_work_info { |
392 | struct slot *p_slot; | |
393 | struct work_struct work; | |
394 | }; | |
395 | ||
1da177e4 | 396 | /** |
26e6c66e RD |
397 | * shpchp_pushbutton_thread - handle pushbutton events |
398 | * @work: &struct work_struct to be handled | |
1da177e4 | 399 | * |
26e6c66e | 400 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 401 | * Handles all pending events and exits. |
1da177e4 | 402 | */ |
c4028958 | 403 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 404 | { |
c4028958 DH |
405 | struct pushbutton_work_info *info = |
406 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 407 | struct slot *p_slot = info->p_slot; |
1da177e4 | 408 | |
a246fa4e KK |
409 | mutex_lock(&p_slot->lock); |
410 | switch (p_slot->state) { | |
411 | case POWEROFF_STATE: | |
412 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 413 | shpchp_disable_slot(p_slot); |
a246fa4e | 414 | mutex_lock(&p_slot->lock); |
1da177e4 | 415 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
416 | break; |
417 | case POWERON_STATE: | |
418 | mutex_unlock(&p_slot->lock); | |
d29aadda | 419 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 420 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 421 | mutex_lock(&p_slot->lock); |
1da177e4 | 422 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
423 | break; |
424 | default: | |
425 | break; | |
426 | } | |
427 | mutex_unlock(&p_slot->lock); | |
428 | ||
429 | kfree(info); | |
430 | } | |
431 | ||
e325e1f0 | 432 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 433 | { |
c4028958 | 434 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
435 | struct pushbutton_work_info *info; |
436 | ||
437 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
438 | if (!info) { | |
f98ca311 TI |
439 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
440 | __func__); | |
a246fa4e KK |
441 | return; |
442 | } | |
443 | info->p_slot = p_slot; | |
c4028958 | 444 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
445 | |
446 | mutex_lock(&p_slot->lock); | |
447 | switch (p_slot->state) { | |
448 | case BLINKINGOFF_STATE: | |
449 | p_slot->state = POWEROFF_STATE; | |
450 | break; | |
451 | case BLINKINGON_STATE: | |
452 | p_slot->state = POWERON_STATE; | |
453 | break; | |
454 | default: | |
6fcaf17a | 455 | kfree(info); |
a246fa4e | 456 | goto out; |
1da177e4 | 457 | } |
f652e7d2 | 458 | queue_work(p_slot->wq, &info->work); |
a246fa4e KK |
459 | out: |
460 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
461 | } |
462 | ||
1da177e4 LT |
463 | static int update_slot_info (struct slot *slot) |
464 | { | |
465 | struct hotplug_slot_info *info; | |
466 | int result; | |
467 | ||
468 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
469 | if (!info) | |
470 | return -ENOMEM; | |
471 | ||
472 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
473 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
474 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
475 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
476 | ||
477 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
478 | kfree (info); | |
479 | return result; | |
480 | } | |
481 | ||
a246fa4e KK |
482 | /* |
483 | * Note: This function must be called with slot->lock held | |
484 | */ | |
485 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 486 | { |
1da177e4 | 487 | u8 getstatus; |
f98ca311 | 488 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 489 | |
a246fa4e KK |
490 | switch (p_slot->state) { |
491 | case STATIC_STATE: | |
f7391f53 KK |
492 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
493 | if (getstatus) { | |
494 | p_slot->state = BLINKINGOFF_STATE; | |
227f0647 RD |
495 | ctrl_info(ctrl, "PCI slot #%s - powering off due to button press\n", |
496 | slot_name(p_slot)); | |
f7391f53 KK |
497 | } else { |
498 | p_slot->state = BLINKINGON_STATE; | |
227f0647 RD |
499 | ctrl_info(ctrl, "PCI slot #%s - powering on due to button press\n", |
500 | slot_name(p_slot)); | |
f7391f53 KK |
501 | } |
502 | /* blink green LED and turn off amber */ | |
503 | p_slot->hpc_ops->green_led_blink(p_slot); | |
504 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 505 | |
f652e7d2 | 506 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
a246fa4e KK |
507 | break; |
508 | case BLINKINGOFF_STATE: | |
509 | case BLINKINGON_STATE: | |
510 | /* | |
511 | * Cancel if we are still blinking; this means that we | |
512 | * press the attention again before the 5 sec. limit | |
513 | * expires to cancel hot-add or hot-remove | |
514 | */ | |
f98ca311 TI |
515 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
516 | slot_name(p_slot)); | |
a246fa4e KK |
517 | cancel_delayed_work(&p_slot->work); |
518 | if (p_slot->state == BLINKINGOFF_STATE) | |
519 | p_slot->hpc_ops->green_led_on(p_slot); | |
520 | else | |
521 | p_slot->hpc_ops->green_led_off(p_slot); | |
522 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
227f0647 RD |
523 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to button press\n", |
524 | slot_name(p_slot)); | |
a246fa4e KK |
525 | p_slot->state = STATIC_STATE; |
526 | break; | |
527 | case POWEROFF_STATE: | |
528 | case POWERON_STATE: | |
529 | /* | |
530 | * Ignore if the slot is on power-on or power-off state; | |
531 | * this means that the previous attention button action | |
532 | * to hot-add or hot-remove is undergoing | |
533 | */ | |
f98ca311 TI |
534 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
535 | slot_name(p_slot)); | |
a246fa4e KK |
536 | update_slot_info(p_slot); |
537 | break; | |
538 | default: | |
f98ca311 | 539 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
540 | break; |
541 | } | |
542 | } | |
543 | ||
c4028958 | 544 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 545 | { |
c4028958 | 546 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
547 | struct slot *p_slot = info->p_slot; |
548 | ||
549 | mutex_lock(&p_slot->lock); | |
550 | switch (info->event_type) { | |
551 | case INT_BUTTON_PRESS: | |
552 | handle_button_press_event(p_slot); | |
f7391f53 KK |
553 | break; |
554 | case INT_POWER_FAULT: | |
be7bce25 | 555 | ctrl_dbg(p_slot->ctrl, "%s: Power fault\n", __func__); |
f7391f53 KK |
556 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
557 | p_slot->hpc_ops->green_led_off(p_slot); | |
558 | break; | |
559 | default: | |
560 | update_slot_info(p_slot); | |
561 | break; | |
1da177e4 | 562 | } |
a246fa4e | 563 | mutex_unlock(&p_slot->lock); |
1da177e4 | 564 | |
f7391f53 | 565 | kfree(info); |
1da177e4 LT |
566 | } |
567 | ||
568 | ||
a246fa4e | 569 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
570 | { |
571 | u8 getstatus = 0; | |
ef3be547 | 572 | int rc, retval = -ENODEV; |
f98ca311 | 573 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
574 | |
575 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 576 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
577 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
578 | if (rc || !getstatus) { | |
f98ca311 | 579 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 580 | goto out; |
1da177e4 LT |
581 | } |
582 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
583 | if (rc || getstatus) { | |
f98ca311 | 584 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 585 | goto out; |
1da177e4 LT |
586 | } |
587 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
588 | if (rc || getstatus) { | |
f98ca311 TI |
589 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
590 | slot_name(p_slot)); | |
ef3be547 | 591 | goto out; |
1da177e4 | 592 | } |
1da177e4 | 593 | |
2178bfad | 594 | p_slot->is_a_board = 1; |
1da177e4 LT |
595 | |
596 | /* We have to save the presence info for these slots */ | |
2178bfad RS |
597 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
598 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 599 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 600 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 601 | |
382a9c9a | 602 | if (((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || |
53044f35 KD |
603 | (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) |
604 | && p_slot->ctrl->num_slots == 1) { | |
605 | /* handle amd pogo errata; this must be done before enable */ | |
606 | amd_pogo_errata_save_misc_reg(p_slot); | |
ef3be547 | 607 | retval = board_added(p_slot); |
53044f35 KD |
608 | /* handle amd pogo errata; this must be done after enable */ |
609 | amd_pogo_errata_restore_misc_reg(p_slot); | |
610 | } else | |
ef3be547 | 611 | retval = board_added(p_slot); |
53044f35 | 612 | |
ef3be547 | 613 | if (retval) { |
2178bfad RS |
614 | p_slot->hpc_ops->get_adapter_status(p_slot, |
615 | &(p_slot->presence_save)); | |
1da177e4 | 616 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
617 | } |
618 | ||
2178bfad | 619 | update_slot_info(p_slot); |
ef3be547 KK |
620 | out: |
621 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
622 | return retval; | |
1da177e4 LT |
623 | } |
624 | ||
625 | ||
a246fa4e | 626 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 627 | { |
1da177e4 | 628 | u8 getstatus = 0; |
ef3be547 | 629 | int rc, retval = -ENODEV; |
f98ca311 | 630 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
631 | |
632 | if (!p_slot->ctrl) | |
ee17fd93 | 633 | return -ENODEV; |
1da177e4 | 634 | |
1da177e4 | 635 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 636 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 637 | |
ef3be547 KK |
638 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
639 | if (rc || !getstatus) { | |
f98ca311 | 640 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 641 | goto out; |
1da177e4 | 642 | } |
ef3be547 KK |
643 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
644 | if (rc || getstatus) { | |
f98ca311 | 645 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 646 | goto out; |
1da177e4 | 647 | } |
ef3be547 KK |
648 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
649 | if (rc || !getstatus) { | |
be7bce25 | 650 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
f98ca311 | 651 | slot_name(p_slot)); |
ef3be547 | 652 | goto out; |
1da177e4 | 653 | } |
1da177e4 | 654 | |
ef3be547 | 655 | retval = remove_board(p_slot); |
2178bfad | 656 | update_slot_info(p_slot); |
ef3be547 KK |
657 | out: |
658 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
659 | return retval; | |
1da177e4 LT |
660 | } |
661 | ||
a246fa4e KK |
662 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
663 | { | |
664 | int retval = -ENODEV; | |
f98ca311 | 665 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
666 | |
667 | mutex_lock(&p_slot->lock); | |
668 | switch (p_slot->state) { | |
669 | case BLINKINGON_STATE: | |
670 | cancel_delayed_work(&p_slot->work); | |
671 | case STATIC_STATE: | |
672 | p_slot->state = POWERON_STATE; | |
673 | mutex_unlock(&p_slot->lock); | |
674 | retval = shpchp_enable_slot(p_slot); | |
675 | mutex_lock(&p_slot->lock); | |
676 | p_slot->state = STATIC_STATE; | |
677 | break; | |
678 | case POWERON_STATE: | |
f98ca311 TI |
679 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
680 | slot_name(p_slot)); | |
a246fa4e KK |
681 | break; |
682 | case BLINKINGOFF_STATE: | |
683 | case POWEROFF_STATE: | |
f98ca311 TI |
684 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
685 | slot_name(p_slot)); | |
a246fa4e KK |
686 | break; |
687 | default: | |
f98ca311 TI |
688 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
689 | slot_name(p_slot)); | |
a246fa4e KK |
690 | break; |
691 | } | |
692 | mutex_unlock(&p_slot->lock); | |
693 | ||
694 | return retval; | |
695 | } | |
696 | ||
697 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
698 | { | |
699 | int retval = -ENODEV; | |
f98ca311 | 700 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
701 | |
702 | mutex_lock(&p_slot->lock); | |
703 | switch (p_slot->state) { | |
704 | case BLINKINGOFF_STATE: | |
705 | cancel_delayed_work(&p_slot->work); | |
706 | case STATIC_STATE: | |
707 | p_slot->state = POWEROFF_STATE; | |
708 | mutex_unlock(&p_slot->lock); | |
709 | retval = shpchp_disable_slot(p_slot); | |
710 | mutex_lock(&p_slot->lock); | |
711 | p_slot->state = STATIC_STATE; | |
712 | break; | |
713 | case POWEROFF_STATE: | |
f98ca311 TI |
714 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
715 | slot_name(p_slot)); | |
a246fa4e KK |
716 | break; |
717 | case BLINKINGON_STATE: | |
718 | case POWERON_STATE: | |
f98ca311 TI |
719 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
720 | slot_name(p_slot)); | |
a246fa4e KK |
721 | break; |
722 | default: | |
f98ca311 TI |
723 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
724 | slot_name(p_slot)); | |
a246fa4e KK |
725 | break; |
726 | } | |
727 | mutex_unlock(&p_slot->lock); | |
728 | ||
729 | return retval; | |
730 | } |