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 *
26 * Send feedback to <greg@kroah.com>, <dely.l.sy@intel.com>
27 *
28 */
29
30 #include <linux/config.h>
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/types.h>
34 #include <linux/proc_fs.h>
35 #include <linux/miscdevice.h>
36 #include <linux/slab.h>
37 #include <linux/tqueue.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_PARM(shpchp_debug, "i");
60 MODULE_PARM(shpchp_poll_mode, "i");
61 MODULE_PARM(shpchp_poll_time, "i");
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.o"
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 hardware_test (struct hotplug_slot *slot, u32 value);
73 static int get_power_status (struct hotplug_slot *slot, u8 *value);
74 static int get_attention_status (struct hotplug_slot *slot, u8 *value);
75 static int get_latch_status (struct hotplug_slot *slot, u8 *value);
76 static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
77 static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
78 static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
79
80 static struct hotplug_slot_ops shpchp_hotplug_slot_ops = {
81 .owner = THIS_MODULE,
82 .set_attention_status = set_attention_status,
83 .enable_slot = enable_slot,
84 .disable_slot = disable_slot,
85 .hardware_test = hardware_test,
86 .get_power_status = get_power_status,
87 .get_attention_status = get_attention_status,
88 .get_latch_status = get_latch_status,
89 .get_adapter_status = get_adapter_status,
90 .get_max_bus_speed = get_max_bus_speed,
91 .get_cur_bus_speed = get_cur_bus_speed,
92 };
93
init_slots(struct controller * ctrl)94 static int init_slots(struct controller *ctrl)
95 {
96 struct slot *new_slot;
97 u8 number_of_slots;
98 u8 slot_device;
99 u32 slot_number, sun;
100 int result;
101
102 dbg("%s\n",__FUNCTION__);
103
104 number_of_slots = ctrl->num_slots;
105 slot_device = ctrl->slot_device_offset;
106 slot_number = ctrl->first_slot;
107
108 while (number_of_slots) {
109 new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL);
110 if (!new_slot)
111 return -ENOMEM;
112
113 memset(new_slot, 0, sizeof(struct slot));
114 new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
115 if (!new_slot->hotplug_slot) {
116 kfree (new_slot);
117 return -ENOMEM;
118 }
119 memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
120
121 new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
122 if (!new_slot->hotplug_slot->info) {
123 kfree (new_slot->hotplug_slot);
124 kfree (new_slot);
125 return -ENOMEM;
126 }
127 memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
128 new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
129 if (!new_slot->hotplug_slot->name) {
130 kfree (new_slot->hotplug_slot->info);
131 kfree (new_slot->hotplug_slot);
132 kfree (new_slot);
133 return -ENOMEM;
134 }
135
136 new_slot->magic = SLOT_MAGIC;
137 new_slot->ctrl = ctrl;
138 new_slot->bus = ctrl->slot_bus;
139 new_slot->device = slot_device;
140 new_slot->hpc_ops = ctrl->hpc_ops;
141
142 if (shpchprm_get_physical_slot_number(ctrl, &sun, new_slot->bus, new_slot->device)) {
143 kfree (new_slot->hotplug_slot->info);
144 kfree (new_slot->hotplug_slot);
145 kfree (new_slot);
146 return -ENOMEM;
147 }
148
149 new_slot->number = sun;
150 new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
151
152 /* Register this slot with the hotplug pci core */
153 new_slot->hotplug_slot->private = new_slot;
154 make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
155 new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops;
156
157 new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
158 new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
159 new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
160 new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
161
162 dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
163 result = pci_hp_register (new_slot->hotplug_slot);
164 if (result) {
165 err ("pci_hp_register failed with error %d\n", result);
166 kfree (new_slot->hotplug_slot->info);
167 kfree (new_slot->hotplug_slot->name);
168 kfree (new_slot->hotplug_slot);
169 kfree (new_slot);
170 return result;
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
184
cleanup_slots(struct controller * ctrl)185 static int cleanup_slots (struct controller * ctrl)
186 {
187 struct slot *old_slot, *next_slot;
188
189 old_slot = ctrl->slot;
190 ctrl->slot = NULL;
191
192 while (old_slot) {
193 next_slot = old_slot->next;
194 pci_hp_deregister (old_slot->hotplug_slot);
195 kfree(old_slot->hotplug_slot->info);
196 kfree(old_slot->hotplug_slot->name);
197 kfree(old_slot->hotplug_slot);
198 kfree(old_slot);
199 old_slot = next_slot;
200 }
201
202
203 return(0);
204 }
205
get_ctlr_slot_config(struct controller * ctrl)206 static int get_ctlr_slot_config(struct controller *ctrl)
207 {
208 int num_ctlr_slots;
209 int first_device_num;
210 int physical_slot_num;
211 int updown;
212 int rc;
213 int flags;
214
215 rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num,
216 &updown, &flags);
217 if (rc) {
218 err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
219 return (-1);
220 }
221
222 ctrl->num_slots = num_ctlr_slots;
223 ctrl->slot_device_offset = first_device_num;
224 ctrl->first_slot = physical_slot_num;
225 ctrl->slot_num_inc = updown; /* either -1 or 1 */
226
227 dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
228 __FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown,
229 ctrl->bus, ctrl->device);
230
231 return (0);
232 }
233
234
235 /*
236 * set_attention_status - Turns the Amber LED for a slot on, off or blink
237 */
set_attention_status(struct hotplug_slot * hotplug_slot,u8 status)238 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
239 {
240 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
241
242 if (slot == NULL)
243 return -ENODEV;
244
245 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
246
247 hotplug_slot->info->attention_status = status;
248 slot->hpc_ops->set_attention_status(slot, status);
249
250
251 return 0;
252 }
253
254
enable_slot(struct hotplug_slot * hotplug_slot)255 static int enable_slot (struct hotplug_slot *hotplug_slot)
256 {
257 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
258
259 if (slot == NULL)
260 return -ENODEV;
261
262 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
263
264 return shpchp_enable_slot(slot);
265 }
266
267
disable_slot(struct hotplug_slot * hotplug_slot)268 static int disable_slot (struct hotplug_slot *hotplug_slot)
269 {
270 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
271
272 if (slot == NULL)
273 return -ENODEV;
274
275 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
276
277 return shpchp_disable_slot(slot);
278 }
279
280
hardware_test(struct hotplug_slot * hotplug_slot,u32 value)281 static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
282 {
283 return 0;
284 }
285
286
get_power_status(struct hotplug_slot * hotplug_slot,u8 * value)287 static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
288 {
289 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
290 int retval;
291
292 if (slot == NULL)
293 return -ENODEV;
294
295 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
296
297 retval = slot->hpc_ops->get_power_status(slot, value);
298 if (retval < 0)
299 *value = hotplug_slot->info->power_status;
300
301 return 0;
302 }
303
get_attention_status(struct hotplug_slot * hotplug_slot,u8 * value)304 static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
305 {
306 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
307 int retval;
308
309 if (slot == NULL)
310 return -ENODEV;
311
312 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
313
314 retval = slot->hpc_ops->get_attention_status(slot, value);
315 if (retval < 0)
316 *value = hotplug_slot->info->attention_status;
317
318 return 0;
319 }
320
get_latch_status(struct hotplug_slot * hotplug_slot,u8 * value)321 static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
322 {
323 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
324 int retval;
325
326 if (slot == NULL)
327 return -ENODEV;
328
329 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
330
331 retval = slot->hpc_ops->get_latch_status(slot, value);
332 if (retval < 0)
333 *value = hotplug_slot->info->latch_status;
334
335 return 0;
336 }
337
get_adapter_status(struct hotplug_slot * hotplug_slot,u8 * value)338 static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
339 {
340 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
341 int retval;
342
343 if (slot == NULL)
344 return -ENODEV;
345
346 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
347
348 retval = slot->hpc_ops->get_adapter_status(slot, value);
349
350 if (retval < 0)
351 *value = hotplug_slot->info->adapter_status;
352
353 return 0;
354 }
355
get_max_bus_speed(struct hotplug_slot * hotplug_slot,enum pci_bus_speed * value)356 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
357 {
358 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
359 int retval;
360
361 if (slot == NULL)
362 return -ENODEV;
363
364 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
365
366 retval = slot->hpc_ops->get_max_bus_speed(slot, value);
367 if (retval < 0)
368 *value = PCI_SPEED_UNKNOWN;
369
370 return 0;
371 }
372
get_cur_bus_speed(struct hotplug_slot * hotplug_slot,enum pci_bus_speed * value)373 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
374 {
375 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
376 int retval;
377
378 if (slot == NULL)
379 return -ENODEV;
380
381 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
382
383 retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
384 if (retval < 0)
385 *value = PCI_SPEED_UNKNOWN;
386
387 return 0;
388 }
389
shpc_probe(struct pci_dev * pdev,const struct pci_device_id * ent)390 static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
391 {
392 int rc;
393 struct controller *ctrl;
394 struct slot *t_slot;
395 int first_device_num; /* first PCI device number supported by this SHPC */
396 int num_ctlr_slots; /* number of slots supported by this SHPC */
397
398 ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
399 if (!ctrl) {
400 err("%s : out of memory\n", __FUNCTION__);
401 goto err_out_none;
402 }
403 memset(ctrl, 0, sizeof(struct controller));
404
405 dbg("DRV_thread pid = %d\n", current->pid);
406
407 rc = shpc_init(ctrl, pdev,
408 (php_intr_callback_t) shpchp_handle_attention_button,
409 (php_intr_callback_t) shpchp_handle_switch_change,
410 (php_intr_callback_t) shpchp_handle_presence_change,
411 (php_intr_callback_t) shpchp_handle_power_fault);
412 if (rc) {
413 dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
414 goto err_out_free_ctrl;
415 }
416
417 dbg("%s: controller initialization success\n", __FUNCTION__);
418 ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
419
420 ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
421 if (!ctrl->pci_bus) {
422 err("out of memory\n");
423 rc = -ENOMEM;
424 goto err_out_unmap_mmio_region;
425 }
426 memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
427 ctrl->bus = pdev->bus->number;
428 ctrl->slot_bus = pdev->subordinate->number;
429
430 ctrl->device = PCI_SLOT(pdev->devfn);
431 ctrl->function = PCI_FUNC(pdev->devfn);
432 dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device,
433 ctrl->function, pdev->irq);
434
435 /*
436 * Save configuration headers for this and subordinate PCI buses
437 */
438
439 rc = get_ctlr_slot_config(ctrl);
440 if (rc) {
441 err(msg_initialization_err, rc);
442 goto err_out_free_ctrl_bus;
443 }
444 first_device_num = ctrl->slot_device_offset;
445 num_ctlr_slots = ctrl->num_slots;
446
447 /* Store PCI Config Space for all devices on this bus */
448 rc = shpchp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
449 if (rc) {
450 err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
451 goto err_out_free_ctrl_bus;
452 }
453
454 /* Get IO, memory, and IRQ resources for new devices */
455 rc = shpchprm_find_available_resources(ctrl);
456 ctrl->add_support = !rc;
457
458 if (rc) {
459 dbg("shpchprm_find_available_resources = %#x\n", rc);
460 err("unable to locate PCI configuration resources for hot plug add.\n");
461 goto err_out_free_ctrl_bus;
462 }
463
464 /* Setup the slot information structures */
465 rc = init_slots(ctrl);
466 if (rc) {
467 err(msg_initialization_err, 6);
468 goto err_out_free_ctrl_slot;
469 }
470
471 /* Now hpc_functions (slot->hpc_ops->functions) are ready */
472 t_slot = shpchp_find_slot(ctrl, first_device_num);
473
474 /* Check for operation bus speed */
475 rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed);
476 dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot);
477
478 if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) {
479 err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n");
480 ctrl->speed = PCI_SPEED_33MHz;
481 }
482
483 /* Finish setting up the hot plug ctrl device */
484 ctrl->next_event = 0;
485
486 if (!shpchp_ctrl_list) {
487 shpchp_ctrl_list = ctrl;
488 ctrl->next = NULL;
489 } else {
490 ctrl->next = shpchp_ctrl_list;
491 shpchp_ctrl_list = ctrl;
492 }
493
494 return 0;
495
496 err_out_free_ctrl_slot:
497 cleanup_slots(ctrl);
498 err_out_free_ctrl_bus:
499 kfree(ctrl->pci_bus);
500 err_out_unmap_mmio_region:
501 ctrl->hpc_ops->release_ctlr(ctrl);
502 err_out_free_ctrl:
503 kfree(ctrl);
504 err_out_none:
505 return -ENODEV;
506 }
507
508
shpc_start_thread(void)509 static int shpc_start_thread(void)
510 {
511 int loop;
512 int retval = 0;
513
514 dbg("Initialize + Start the notification/polling mechanism \n");
515
516 retval = shpchp_event_start_thread();
517 if (retval) {
518 dbg("shpchp_event_start_thread() failed\n");
519 return retval;
520 }
521
522 dbg("Initialize slot lists\n");
523 /* One slot list for each bus in the system */
524 for (loop = 0; loop < 256; loop++) {
525 shpchp_slot_list[loop] = NULL;
526 }
527
528 return retval;
529 }
530
531
unload_shpchpd(void)532 static void unload_shpchpd(void)
533 {
534 struct pci_func *next;
535 struct pci_func *TempSlot;
536 int loop;
537 struct controller *ctrl;
538 struct controller *tctrl;
539 struct pci_resource *res;
540 struct pci_resource *tres;
541
542 ctrl = shpchp_ctrl_list;
543
544 while (ctrl) {
545 cleanup_slots(ctrl);
546
547 res = ctrl->io_head;
548 while (res) {
549 tres = res;
550 res = res->next;
551 kfree(tres);
552 }
553
554 res = ctrl->mem_head;
555 while (res) {
556 tres = res;
557 res = res->next;
558 kfree(tres);
559 }
560
561 res = ctrl->p_mem_head;
562 while (res) {
563 tres = res;
564 res = res->next;
565 kfree(tres);
566 }
567
568 res = ctrl->bus_head;
569 while (res) {
570 tres = res;
571 res = res->next;
572 kfree(tres);
573 }
574
575 kfree (ctrl->pci_bus);
576
577 dbg("%s: calling release_ctlr\n", __FUNCTION__);
578 ctrl->hpc_ops->release_ctlr(ctrl);
579
580 tctrl = ctrl;
581 ctrl = ctrl->next;
582
583 kfree(tctrl);
584 }
585
586 for (loop = 0; loop < 256; loop++) {
587 next = shpchp_slot_list[loop];
588 while (next != NULL) {
589 res = next->io_head;
590 while (res) {
591 tres = res;
592 res = res->next;
593 kfree(tres);
594 }
595
596 res = next->mem_head;
597 while (res) {
598 tres = res;
599 res = res->next;
600 kfree(tres);
601 }
602
603 res = next->p_mem_head;
604 while (res) {
605 tres = res;
606 res = res->next;
607 kfree(tres);
608 }
609
610 res = next->bus_head;
611 while (res) {
612 tres = res;
613 res = res->next;
614 kfree(tres);
615 }
616
617 TempSlot = next;
618 next = next->next;
619 kfree(TempSlot);
620 }
621 }
622
623 /* Stop the notification mechanism */
624 shpchp_event_stop_thread();
625
626 }
627
628
629 static struct pci_device_id shpcd_pci_tbl[] __devinitdata = {
630 {
631 .class = ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
632 .class_mask = ~0,
633 .vendor = PCI_ANY_ID,
634 .device = PCI_ANY_ID,
635 .subvendor = PCI_ANY_ID,
636 .subdevice = PCI_ANY_ID,
637 },
638 { /* end: all zeroes */ }
639 };
640
641 MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
642
643
644
645 static struct pci_driver shpc_driver = {
646 .name = SHPC_MODULE_NAME,
647 .id_table = shpcd_pci_tbl,
648 .probe = shpc_probe,
649 /* remove: shpc_remove_one, */
650 };
651
652
653
shpcd_init(void)654 static int __init shpcd_init(void)
655 {
656 int retval = 0;
657
658 #ifdef CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE
659 shpchp_poll_mode = 1;
660 #endif
661
662 retval = shpc_start_thread();
663 if (retval)
664 goto error_hpc_init;
665
666 retval = shpchprm_init(PCI);
667 if (!retval) {
668 retval = pci_module_init(&shpc_driver);
669 dbg("%s: pci_module_init = %d\n", __FUNCTION__,retval);
670 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
671 }
672
673 error_hpc_init:
674 if (retval) {
675 shpchprm_cleanup();
676 shpchp_event_stop_thread();
677 } else
678 shpchprm_print_pirt();
679
680 return retval;
681 }
682
shpcd_cleanup(void)683 static void __exit shpcd_cleanup(void)
684 {
685 dbg("unload_shpchpd()\n");
686 unload_shpchpd();
687
688 shpchprm_cleanup();
689
690 dbg("pci_unregister_driver\n");
691 pci_unregister_driver(&shpc_driver);
692
693 info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
694 }
695
696
697 module_init(shpcd_init);
698 module_exit(shpcd_cleanup);
699
700
701