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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 | ||
30 | #include <linux/config.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/moduleparam.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/types.h> | |
35 | #include <linux/proc_fs.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/workqueue.h> | |
38 | #include <linux/pci.h> | |
39 | #include <linux/init.h> | |
40 | #include <asm/uaccess.h> | |
41 | #include "shpchp.h" | |
42 | #include "shpchprm.h" | |
43 | ||
44 | /* Global variables */ | |
45 | int shpchp_debug; | |
46 | int shpchp_poll_mode; | |
47 | int shpchp_poll_time; | |
48 | struct controller *shpchp_ctrl_list; /* = NULL */ | |
49 | struct pci_func *shpchp_slot_list[256]; | |
50 | ||
51 | #define DRIVER_VERSION "0.4" | |
52 | #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>" | |
53 | #define DRIVER_DESC "Standard Hot Plug PCI Controller Driver" | |
54 | ||
55 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
56 | MODULE_DESCRIPTION(DRIVER_DESC); | |
57 | MODULE_LICENSE("GPL"); | |
58 | ||
59 | module_param(shpchp_debug, bool, 0644); | |
60 | module_param(shpchp_poll_mode, bool, 0644); | |
61 | module_param(shpchp_poll_time, int, 0644); | |
62 | MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not"); | |
63 | MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not"); | |
64 | MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds"); | |
65 | ||
66 | #define SHPC_MODULE_NAME "shpchp" | |
67 | ||
68 | static int shpc_start_thread (void); | |
69 | static int set_attention_status (struct hotplug_slot *slot, u8 value); | |
70 | static int enable_slot (struct hotplug_slot *slot); | |
71 | static int disable_slot (struct hotplug_slot *slot); | |
72 | static int get_power_status (struct hotplug_slot *slot, u8 *value); | |
73 | static int get_attention_status (struct hotplug_slot *slot, u8 *value); | |
74 | static int get_latch_status (struct hotplug_slot *slot, u8 *value); | |
75 | static int get_adapter_status (struct hotplug_slot *slot, u8 *value); | |
76 | static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); | |
77 | static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); | |
78 | ||
79 | static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { | |
80 | .owner = THIS_MODULE, | |
81 | .set_attention_status = set_attention_status, | |
82 | .enable_slot = enable_slot, | |
83 | .disable_slot = disable_slot, | |
84 | .get_power_status = get_power_status, | |
85 | .get_attention_status = get_attention_status, | |
86 | .get_latch_status = get_latch_status, | |
87 | .get_adapter_status = get_adapter_status, | |
88 | .get_max_bus_speed = get_max_bus_speed, | |
89 | .get_cur_bus_speed = get_cur_bus_speed, | |
90 | }; | |
91 | ||
92 | /** | |
93 | * release_slot - free up the memory used by a slot | |
94 | * @hotplug_slot: slot to free | |
95 | */ | |
96 | static void release_slot(struct hotplug_slot *hotplug_slot) | |
97 | { | |
ee17fd93 | 98 | struct slot *slot = hotplug_slot->private; |
1da177e4 LT |
99 | |
100 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
101 | ||
102 | kfree(slot->hotplug_slot->info); | |
103 | kfree(slot->hotplug_slot->name); | |
104 | kfree(slot->hotplug_slot); | |
105 | kfree(slot); | |
106 | } | |
107 | ||
108 | static int init_slots(struct controller *ctrl) | |
109 | { | |
110 | struct slot *new_slot; | |
111 | u8 number_of_slots; | |
112 | u8 slot_device; | |
113 | u32 slot_number, sun; | |
114 | int result = -ENOMEM; | |
115 | ||
116 | dbg("%s\n",__FUNCTION__); | |
117 | ||
118 | number_of_slots = ctrl->num_slots; | |
119 | slot_device = ctrl->slot_device_offset; | |
120 | slot_number = ctrl->first_slot; | |
121 | ||
122 | while (number_of_slots) { | |
123 | new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL); | |
124 | if (!new_slot) | |
125 | goto error; | |
126 | ||
127 | memset(new_slot, 0, sizeof(struct slot)); | |
128 | new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL); | |
129 | if (!new_slot->hotplug_slot) | |
130 | goto error_slot; | |
131 | memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot)); | |
132 | ||
133 | new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL); | |
134 | if (!new_slot->hotplug_slot->info) | |
135 | goto error_hpslot; | |
136 | memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info)); | |
137 | new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL); | |
138 | if (!new_slot->hotplug_slot->name) | |
139 | goto error_info; | |
140 | ||
141 | new_slot->magic = SLOT_MAGIC; | |
142 | new_slot->ctrl = ctrl; | |
143 | new_slot->bus = ctrl->slot_bus; | |
144 | new_slot->device = slot_device; | |
145 | new_slot->hpc_ops = ctrl->hpc_ops; | |
146 | ||
147 | if (shpchprm_get_physical_slot_number(ctrl, &sun, | |
148 | new_slot->bus, new_slot->device)) | |
149 | goto error_name; | |
150 | ||
151 | new_slot->number = sun; | |
152 | new_slot->hp_slot = slot_device - ctrl->slot_device_offset; | |
153 | ||
154 | /* register this slot with the hotplug pci core */ | |
155 | new_slot->hotplug_slot->private = new_slot; | |
156 | new_slot->hotplug_slot->release = &release_slot; | |
157 | make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot); | |
158 | new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops; | |
159 | ||
160 | new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status)); | |
161 | new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status)); | |
162 | new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status)); | |
163 | new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status)); | |
164 | ||
165 | dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus, | |
166 | new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset); | |
167 | result = pci_hp_register (new_slot->hotplug_slot); | |
168 | if (result) { | |
169 | err ("pci_hp_register failed with error %d\n", result); | |
170 | goto error_name; | |
171 | } | |
172 | ||
173 | new_slot->next = ctrl->slot; | |
174 | ctrl->slot = new_slot; | |
175 | ||
176 | number_of_slots--; | |
177 | slot_device++; | |
178 | slot_number += ctrl->slot_num_inc; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | ||
183 | error_name: | |
184 | kfree(new_slot->hotplug_slot->name); | |
185 | error_info: | |
186 | kfree(new_slot->hotplug_slot->info); | |
187 | error_hpslot: | |
188 | kfree(new_slot->hotplug_slot); | |
189 | error_slot: | |
190 | kfree(new_slot); | |
191 | error: | |
192 | return result; | |
193 | } | |
194 | ||
195 | static void cleanup_slots(struct controller *ctrl) | |
196 | { | |
197 | struct slot *old_slot, *next_slot; | |
198 | ||
199 | old_slot = ctrl->slot; | |
200 | ctrl->slot = NULL; | |
201 | ||
202 | while (old_slot) { | |
203 | next_slot = old_slot->next; | |
204 | pci_hp_deregister(old_slot->hotplug_slot); | |
205 | old_slot = next_slot; | |
206 | } | |
207 | } | |
208 | ||
209 | static int get_ctlr_slot_config(struct controller *ctrl) | |
210 | { | |
211 | int num_ctlr_slots; | |
212 | int first_device_num; | |
213 | int physical_slot_num; | |
214 | int updown; | |
215 | int rc; | |
216 | int flags; | |
217 | ||
218 | rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags); | |
219 | if (rc) { | |
220 | err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device); | |
221 | return -1; | |
222 | } | |
223 | ||
224 | ctrl->num_slots = num_ctlr_slots; | |
225 | ctrl->slot_device_offset = first_device_num; | |
226 | ctrl->first_slot = physical_slot_num; | |
227 | ctrl->slot_num_inc = updown; /* either -1 or 1 */ | |
228 | ||
229 | dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n", | |
230 | __FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown, ctrl->bus, ctrl->device); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | ||
236 | /* | |
237 | * set_attention_status - Turns the Amber LED for a slot on, off or blink | |
238 | */ | |
239 | static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) | |
240 | { | |
241 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
242 | ||
243 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
244 | ||
245 | hotplug_slot->info->attention_status = status; | |
246 | slot->hpc_ops->set_attention_status(slot, status); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | ||
252 | static int enable_slot (struct hotplug_slot *hotplug_slot) | |
253 | { | |
254 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
255 | ||
256 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
257 | ||
258 | return shpchp_enable_slot(slot); | |
259 | } | |
260 | ||
261 | ||
262 | static int disable_slot (struct hotplug_slot *hotplug_slot) | |
263 | { | |
264 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
265 | ||
266 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
267 | ||
268 | return shpchp_disable_slot(slot); | |
269 | } | |
270 | ||
271 | static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value) | |
272 | { | |
273 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
274 | int retval; | |
275 | ||
276 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
277 | ||
278 | retval = slot->hpc_ops->get_power_status(slot, value); | |
279 | if (retval < 0) | |
280 | *value = hotplug_slot->info->power_status; | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value) | |
286 | { | |
287 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
288 | int retval; | |
289 | ||
290 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
291 | ||
292 | retval = slot->hpc_ops->get_attention_status(slot, value); | |
293 | if (retval < 0) | |
294 | *value = hotplug_slot->info->attention_status; | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value) | |
300 | { | |
301 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
302 | int retval; | |
303 | ||
304 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
305 | ||
306 | retval = slot->hpc_ops->get_latch_status(slot, value); | |
307 | if (retval < 0) | |
308 | *value = hotplug_slot->info->latch_status; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value) | |
314 | { | |
315 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
316 | int retval; | |
317 | ||
318 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
319 | ||
320 | retval = slot->hpc_ops->get_adapter_status(slot, value); | |
321 | if (retval < 0) | |
322 | *value = hotplug_slot->info->adapter_status; | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
328 | { | |
329 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
330 | int retval; | |
331 | ||
332 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
333 | ||
334 | retval = slot->hpc_ops->get_max_bus_speed(slot, value); | |
335 | if (retval < 0) | |
336 | *value = PCI_SPEED_UNKNOWN; | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
342 | { | |
343 | struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); | |
344 | int retval; | |
345 | ||
346 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
347 | ||
348 | retval = slot->hpc_ops->get_cur_bus_speed(slot, value); | |
349 | if (retval < 0) | |
350 | *value = PCI_SPEED_UNKNOWN; | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
356 | { | |
357 | int rc; | |
358 | struct controller *ctrl; | |
359 | struct slot *t_slot; | |
360 | int first_device_num; /* first PCI device number supported by this SHPC */ | |
361 | int num_ctlr_slots; /* number of slots supported by this SHPC */ | |
362 | ||
363 | ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL); | |
364 | if (!ctrl) { | |
365 | err("%s : out of memory\n", __FUNCTION__); | |
366 | goto err_out_none; | |
367 | } | |
368 | memset(ctrl, 0, sizeof(struct controller)); | |
369 | ||
370 | dbg("DRV_thread pid = %d\n", current->pid); | |
371 | ||
372 | rc = shpc_init(ctrl, pdev, | |
373 | (php_intr_callback_t) shpchp_handle_attention_button, | |
374 | (php_intr_callback_t) shpchp_handle_switch_change, | |
375 | (php_intr_callback_t) shpchp_handle_presence_change, | |
376 | (php_intr_callback_t) shpchp_handle_power_fault); | |
377 | if (rc) { | |
378 | dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME); | |
379 | goto err_out_free_ctrl; | |
380 | } | |
381 | ||
382 | dbg("%s: controller initialization success\n", __FUNCTION__); | |
383 | ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */ | |
384 | ||
385 | pci_set_drvdata(pdev, ctrl); | |
386 | ||
387 | ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL); | |
388 | if (!ctrl->pci_bus) { | |
389 | err("out of memory\n"); | |
390 | rc = -ENOMEM; | |
391 | goto err_out_unmap_mmio_region; | |
392 | } | |
393 | ||
394 | memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus)); | |
395 | ctrl->bus = pdev->bus->number; | |
396 | ctrl->slot_bus = pdev->subordinate->number; | |
397 | ||
398 | ctrl->device = PCI_SLOT(pdev->devfn); | |
399 | ctrl->function = PCI_FUNC(pdev->devfn); | |
400 | dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device, ctrl->function, pdev->irq); | |
401 | ||
402 | /* | |
403 | * Save configuration headers for this and subordinate PCI buses | |
404 | */ | |
405 | ||
406 | rc = get_ctlr_slot_config(ctrl); | |
407 | if (rc) { | |
408 | err(msg_initialization_err, rc); | |
409 | goto err_out_free_ctrl_bus; | |
410 | } | |
411 | first_device_num = ctrl->slot_device_offset; | |
412 | num_ctlr_slots = ctrl->num_slots; | |
413 | ||
414 | /* Store PCI Config Space for all devices on this bus */ | |
415 | rc = shpchp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num); | |
416 | if (rc) { | |
417 | err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc); | |
418 | goto err_out_free_ctrl_bus; | |
419 | } | |
420 | ||
dbd7a788 | 421 | ctrl->add_support = 1; |
1da177e4 | 422 | |
1da177e4 LT |
423 | /* Setup the slot information structures */ |
424 | rc = init_slots(ctrl); | |
425 | if (rc) { | |
426 | err(msg_initialization_err, 6); | |
427 | goto err_out_free_ctrl_slot; | |
428 | } | |
429 | ||
430 | /* Now hpc_functions (slot->hpc_ops->functions) are ready */ | |
431 | t_slot = shpchp_find_slot(ctrl, first_device_num); | |
432 | ||
433 | /* Check for operation bus speed */ | |
434 | rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed); | |
435 | dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot); | |
436 | ||
437 | if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) { | |
438 | err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n"); | |
439 | ctrl->speed = PCI_SPEED_33MHz; | |
440 | } | |
441 | ||
442 | /* Finish setting up the hot plug ctrl device */ | |
443 | ctrl->next_event = 0; | |
444 | ||
445 | if (!shpchp_ctrl_list) { | |
446 | shpchp_ctrl_list = ctrl; | |
447 | ctrl->next = NULL; | |
448 | } else { | |
449 | ctrl->next = shpchp_ctrl_list; | |
450 | shpchp_ctrl_list = ctrl; | |
451 | } | |
452 | ||
453 | shpchp_create_ctrl_files(ctrl); | |
454 | ||
455 | return 0; | |
456 | ||
457 | err_out_free_ctrl_slot: | |
458 | cleanup_slots(ctrl); | |
459 | err_out_free_ctrl_bus: | |
460 | kfree(ctrl->pci_bus); | |
461 | err_out_unmap_mmio_region: | |
462 | ctrl->hpc_ops->release_ctlr(ctrl); | |
463 | err_out_free_ctrl: | |
464 | kfree(ctrl); | |
465 | err_out_none: | |
466 | return -ENODEV; | |
467 | } | |
468 | ||
469 | ||
470 | static int shpc_start_thread(void) | |
471 | { | |
472 | int loop; | |
473 | int retval = 0; | |
474 | ||
475 | dbg("Initialize + Start the notification/polling mechanism \n"); | |
476 | ||
477 | retval = shpchp_event_start_thread(); | |
478 | if (retval) { | |
479 | dbg("shpchp_event_start_thread() failed\n"); | |
480 | return retval; | |
481 | } | |
482 | ||
483 | dbg("Initialize slot lists\n"); | |
484 | /* One slot list for each bus in the system */ | |
485 | for (loop = 0; loop < 256; loop++) { | |
486 | shpchp_slot_list[loop] = NULL; | |
487 | } | |
488 | ||
489 | return retval; | |
490 | } | |
491 | ||
1da177e4 LT |
492 | static void __exit unload_shpchpd(void) |
493 | { | |
494 | struct pci_func *next; | |
495 | struct pci_func *TempSlot; | |
496 | int loop; | |
497 | struct controller *ctrl; | |
498 | struct controller *tctrl; | |
499 | ||
500 | ctrl = shpchp_ctrl_list; | |
501 | ||
502 | while (ctrl) { | |
503 | cleanup_slots(ctrl); | |
504 | ||
1da177e4 LT |
505 | kfree (ctrl->pci_bus); |
506 | ||
507 | dbg("%s: calling release_ctlr\n", __FUNCTION__); | |
508 | ctrl->hpc_ops->release_ctlr(ctrl); | |
509 | ||
510 | tctrl = ctrl; | |
511 | ctrl = ctrl->next; | |
512 | ||
513 | kfree(tctrl); | |
514 | } | |
515 | ||
516 | for (loop = 0; loop < 256; loop++) { | |
517 | next = shpchp_slot_list[loop]; | |
518 | while (next != NULL) { | |
1da177e4 LT |
519 | TempSlot = next; |
520 | next = next->next; | |
521 | kfree(TempSlot); | |
522 | } | |
523 | } | |
524 | ||
525 | /* Stop the notification mechanism */ | |
526 | shpchp_event_stop_thread(); | |
527 | ||
528 | } | |
529 | ||
530 | ||
531 | static struct pci_device_id shpcd_pci_tbl[] = { | |
532 | { | |
533 | .class = ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), | |
534 | .class_mask = ~0, | |
535 | .vendor = PCI_ANY_ID, | |
536 | .device = PCI_ANY_ID, | |
537 | .subvendor = PCI_ANY_ID, | |
538 | .subdevice = PCI_ANY_ID, | |
539 | }, | |
540 | ||
541 | { /* end: all zeroes */ } | |
542 | }; | |
543 | ||
544 | MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); | |
545 | ||
546 | ||
547 | ||
548 | static struct pci_driver shpc_driver = { | |
549 | .name = SHPC_MODULE_NAME, | |
550 | .id_table = shpcd_pci_tbl, | |
551 | .probe = shpc_probe, | |
552 | /* remove: shpc_remove_one, */ | |
553 | }; | |
554 | ||
555 | ||
556 | ||
557 | static int __init shpcd_init(void) | |
558 | { | |
559 | int retval = 0; | |
560 | ||
561 | #ifdef CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE | |
562 | shpchp_poll_mode = 1; | |
563 | #endif | |
564 | ||
565 | retval = shpc_start_thread(); | |
566 | if (retval) | |
567 | goto error_hpc_init; | |
568 | ||
569 | retval = shpchprm_init(PCI); | |
570 | if (!retval) { | |
571 | retval = pci_register_driver(&shpc_driver); | |
572 | dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval); | |
573 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
574 | } | |
575 | ||
576 | error_hpc_init: | |
577 | if (retval) { | |
578 | shpchprm_cleanup(); | |
579 | shpchp_event_stop_thread(); | |
dbd7a788 | 580 | } |
1da177e4 LT |
581 | return retval; |
582 | } | |
583 | ||
584 | static void __exit shpcd_cleanup(void) | |
585 | { | |
586 | dbg("unload_shpchpd()\n"); | |
587 | unload_shpchpd(); | |
588 | ||
589 | shpchprm_cleanup(); | |
590 | ||
591 | dbg("pci_unregister_driver\n"); | |
592 | pci_unregister_driver(&shpc_driver); | |
593 | ||
594 | info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); | |
595 | } | |
596 | ||
597 | module_init(shpcd_init); | |
598 | module_exit(shpcd_cleanup); |