1 /*
2 * PCI Express 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 "pciehp.h"
42 #include "pciehprm.h"
43
44 /* Global variables */
45 int pciehp_debug;
46 int pciehp_poll_mode;
47 int pciehp_poll_time;
48 struct controller *pciehp_ctrl_list; /* = NULL */
49 struct pci_func *pciehp_slot_list[256];
50
51 #define DRIVER_VERSION "0.5"
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 "PCI Express Hot Plug Controller Driver"
54
55 MODULE_AUTHOR(DRIVER_AUTHOR);
56 MODULE_DESCRIPTION(DRIVER_DESC);
57 MODULE_LICENSE("GPL");
58
59 MODULE_PARM(pciehp_debug, "i");
60 MODULE_PARM(pciehp_poll_mode, "i");
61 MODULE_PARM(pciehp_poll_time, "i");
62 MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
63 MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
64 MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
65
66 #define PCIE_MODULE_NAME "pciehp.o"
67
68 static int pcie_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 pciehp_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;
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 new_slot->number = ctrl->first_slot;
143 new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
144
145 /* register this slot with the hotplug pci core */
146 new_slot->hotplug_slot->private = new_slot;
147 make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
148 new_slot->hotplug_slot->ops = &pciehp_hotplug_slot_ops;
149
150 new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
151 new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
152 new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
153 new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
154
155 dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n",
156 new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
157 result = pci_hp_register (new_slot->hotplug_slot);
158 if (result) {
159 err ("pci_hp_register failed with error %d\n", result);
160 kfree (new_slot->hotplug_slot->info);
161 kfree (new_slot->hotplug_slot->name);
162 kfree (new_slot->hotplug_slot);
163 kfree (new_slot);
164 return result;
165 }
166
167 new_slot->next = ctrl->slot;
168 ctrl->slot = new_slot;
169
170 number_of_slots--;
171 slot_device++;
172 slot_number += ctrl->slot_num_inc;
173 }
174
175 return(0);
176 }
177
178
cleanup_slots(struct controller * ctrl)179 static int cleanup_slots (struct controller * ctrl)
180 {
181 struct slot *old_slot, *next_slot;
182
183 old_slot = ctrl->slot;
184 ctrl->slot = NULL;
185
186 while (old_slot) {
187 next_slot = old_slot->next;
188 pci_hp_deregister (old_slot->hotplug_slot);
189 kfree(old_slot->hotplug_slot->info);
190 kfree(old_slot->hotplug_slot->name);
191 kfree(old_slot->hotplug_slot);
192 kfree(old_slot);
193 old_slot = next_slot;
194 }
195
196
197 return(0);
198 }
199
get_ctlr_slot_config(struct controller * ctrl)200 static int get_ctlr_slot_config(struct controller *ctrl)
201 {
202 int num_ctlr_slots; /* Not needed; PCI Express has 1 slot per port */
203 int first_device_num; /* Not needed */
204 int physical_slot_num;
205 int updown; /* Not needed */
206 int rc;
207 int flags; /* Not needed */
208
209 rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags);
210 if (rc) {
211 err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
212 return (-1);
213 }
214
215 ctrl->num_slots = num_ctlr_slots; /* PCI Express has 1 slot per port */
216 ctrl->slot_device_offset = first_device_num;
217 ctrl->first_slot = physical_slot_num;
218 ctrl->slot_num_inc = updown; /* Not needed */ /* either -1 or 1 */
219
220 dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
221 __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, updown,
222 ctrl->bus, ctrl->device);
223
224 return (0);
225 }
226
227
228 /*
229 * set_attention_status - Turns the Amber LED for a slot on, off or blink
230 */
set_attention_status(struct hotplug_slot * hotplug_slot,u8 status)231 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
232 {
233 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
234
235 if (slot == NULL)
236 return -ENODEV;
237
238 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
239
240 hotplug_slot->info->attention_status = status;
241 slot->hpc_ops->set_attention_status(slot, status);
242
243
244 return 0;
245 }
246
247
enable_slot(struct hotplug_slot * hotplug_slot)248 static int enable_slot (struct hotplug_slot *hotplug_slot)
249 {
250 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
251
252 if (slot == NULL)
253 return -ENODEV;
254
255 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
256
257 return pciehp_enable_slot(slot);
258 }
259
260
disable_slot(struct hotplug_slot * hotplug_slot)261 static int disable_slot (struct hotplug_slot *hotplug_slot)
262 {
263 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
264
265 if (slot == NULL)
266 return -ENODEV;
267
268 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
269
270 return pciehp_disable_slot(slot);
271 }
272
273
hardware_test(struct hotplug_slot * hotplug_slot,u32 value)274 static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
275 {
276 return 0;
277 }
278
279
get_power_status(struct hotplug_slot * hotplug_slot,u8 * value)280 static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
281 {
282 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
283 int retval;
284
285 if (slot == NULL)
286 return -ENODEV;
287
288 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
289
290 retval = slot->hpc_ops->get_power_status(slot, value);
291 if (retval < 0)
292 *value = hotplug_slot->info->power_status;
293
294 return 0;
295 }
296
get_attention_status(struct hotplug_slot * hotplug_slot,u8 * value)297 static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
298 {
299 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
300 int retval;
301
302 if (slot == NULL)
303 return -ENODEV;
304
305 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
306
307 retval = slot->hpc_ops->get_attention_status(slot, value);
308 if (retval < 0)
309 *value = hotplug_slot->info->attention_status;
310
311 return 0;
312 }
313
get_latch_status(struct hotplug_slot * hotplug_slot,u8 * value)314 static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
315 {
316 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
317 int retval;
318
319 if (slot == NULL)
320 return -ENODEV;
321
322 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
323
324 retval = slot->hpc_ops->get_latch_status(slot, value);
325 if (retval < 0)
326 *value = hotplug_slot->info->latch_status;
327
328 return 0;
329 }
330
get_adapter_status(struct hotplug_slot * hotplug_slot,u8 * value)331 static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
332 {
333 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
334 int retval;
335
336 if (slot == NULL)
337 return -ENODEV;
338
339 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
340
341 retval = slot->hpc_ops->get_adapter_status(slot, value);
342
343 if (retval < 0)
344 *value = hotplug_slot->info->adapter_status;
345
346 return 0;
347 }
348
get_max_bus_speed(struct hotplug_slot * hotplug_slot,enum pci_bus_speed * value)349 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
350 {
351 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
352 int retval;
353
354 if (slot == NULL)
355 return -ENODEV;
356
357 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
358
359 retval = slot->hpc_ops->get_max_bus_speed(slot, value);
360 if (retval < 0)
361 *value = PCI_SPEED_UNKNOWN;
362
363 return 0;
364 }
365
get_cur_bus_speed(struct hotplug_slot * hotplug_slot,enum pci_bus_speed * value)366 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
367 {
368 struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
369 int retval;
370
371 if (slot == NULL)
372 return -ENODEV;
373
374 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
375
376 retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
377 if (retval < 0)
378 *value = PCI_SPEED_UNKNOWN;
379
380 return 0;
381 }
382
pcie_probe(struct pci_dev * pdev,const struct pci_device_id * ent)383 static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
384 {
385 int rc;
386 struct controller *ctrl;
387 struct slot *t_slot;
388 int first_device_num = 0; /* first PCI device number supported by this PCIE */
389 int num_ctlr_slots; /* number of slots supported by this HPC */
390 u8 value;
391
392 ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
393 if (!ctrl) {
394 err("%s : out of memory\n", __FUNCTION__);
395 goto err_out_none;
396 }
397 memset(ctrl, 0, sizeof(struct controller));
398
399 dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid);
400
401 rc = pcie_init(ctrl, pdev,
402 (php_intr_callback_t) pciehp_handle_attention_button,
403 (php_intr_callback_t) pciehp_handle_switch_change,
404 (php_intr_callback_t) pciehp_handle_presence_change,
405 (php_intr_callback_t) pciehp_handle_power_fault);
406 if (rc) {
407 dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
408 goto err_out_free_ctrl;
409 }
410
411 ctrl->pci_dev = pdev;
412
413 ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
414 if (!ctrl->pci_bus) {
415 err("%s: out of memory\n", __FUNCTION__);
416 rc = -ENOMEM;
417 goto err_out_unmap_mmio_region;
418 }
419 dbg("%s: ctrl->pci_bus %p\n", __FUNCTION__, ctrl->pci_bus);
420 memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
421
422 ctrl->bus = pdev->bus->number; /* ctrl bus */
423 ctrl->slot_bus = pdev->subordinate->number; /* bus controlled by this HPC */
424
425 ctrl->device = PCI_SLOT(pdev->devfn);
426 ctrl->function = PCI_FUNC(pdev->devfn);
427 dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", __FUNCTION__,
428 ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
429
430 /*
431 * Save configuration headers for this and subordinate PCI buses
432 */
433
434 rc = get_ctlr_slot_config(ctrl);
435 if (rc) {
436 err(msg_initialization_err, rc);
437 goto err_out_free_ctrl_bus;
438 }
439
440 first_device_num = ctrl->slot_device_offset;
441 num_ctlr_slots = ctrl->num_slots;
442
443
444 /* Store PCI Config Space for all devices on this bus */
445 dbg("%s: Before calling pciehp_save_config, ctrl->bus %x,ctrl->slot_bus %x\n",
446 __FUNCTION__,ctrl->bus, ctrl->slot_bus);
447 rc = pciehp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
448 if (rc) {
449 err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
450 goto err_out_free_ctrl_bus;
451 }
452
453 /* Get IO, memory, and IRQ resources for new devices */
454 rc = pciehprm_find_available_resources(ctrl);
455
456 ctrl->add_support = !rc;
457 if (rc) {
458 dbg("pciehprm_find_available_resources = %#x\n", rc);
459 err("unable to locate PCI configuration resources for hot plug add.\n");
460 goto err_out_free_ctrl_bus;
461 }
462 /* Setup the slot information structures */
463 rc = init_slots(ctrl);
464 if (rc) {
465 err(msg_initialization_err, 6);
466 goto err_out_free_ctrl_slot;
467 }
468
469 t_slot = pciehp_find_slot(ctrl, first_device_num);
470 dbg("%s: t_slot %p\n", __FUNCTION__, t_slot);
471
472 /* Finish setting up the hot plug ctrl device */
473 ctrl->next_event = 0;
474
475 if (!pciehp_ctrl_list) {
476 pciehp_ctrl_list = ctrl;
477 ctrl->next = NULL;
478 } else {
479 ctrl->next = pciehp_ctrl_list;
480 pciehp_ctrl_list = ctrl;
481 }
482
483 /* Wait for exclusive access to hardware */
484 down(&ctrl->crit_sect);
485
486 t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
487 dbg("%s: adapter value %x\n", __FUNCTION__, value);
488 if (!value) {
489 rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
490 if (rc) {
491 up(&ctrl->crit_sect);
492 goto err_out_free_ctrl_slot;
493 } else
494 /* Wait for the command to complete */
495 wait_for_ctrl_irq (ctrl);
496 }
497
498 /* Done with exclusive hardware access */
499 up(&ctrl->crit_sect);
500
501 return 0;
502
503 err_out_free_ctrl_slot:
504 cleanup_slots(ctrl);
505 err_out_free_ctrl_bus:
506 kfree(ctrl->pci_bus);
507 err_out_unmap_mmio_region:
508 ctrl->hpc_ops->release_ctlr(ctrl);
509 err_out_free_ctrl:
510 kfree(ctrl);
511 err_out_none:
512 return -ENODEV;
513 }
514
515
pcie_start_thread(void)516 static int pcie_start_thread(void)
517 {
518 int loop;
519 int retval = 0;
520
521 dbg("Initialize + Start the notification/polling mechanism \n");
522
523 retval = pciehp_event_start_thread();
524 if (retval) {
525 dbg("pciehp_event_start_thread() failed\n");
526 return retval;
527 }
528
529 dbg("Initialize slot lists\n");
530 /* One slot list for each bus in the system */
531 for (loop = 0; loop < 256; loop++) {
532 pciehp_slot_list[loop] = NULL;
533 }
534
535 return retval;
536 }
537
538
unload_pciehpd(void)539 static void unload_pciehpd(void)
540 {
541 struct pci_func *next;
542 struct pci_func *TempSlot;
543 int loop;
544 struct controller *ctrl;
545 struct controller *tctrl;
546 struct pci_resource *res;
547 struct pci_resource *tres;
548
549 ctrl = pciehp_ctrl_list;
550 while (ctrl) {
551 cleanup_slots(ctrl);
552
553 res = ctrl->io_head;
554 while (res) {
555 tres = res;
556 res = res->next;
557 kfree(tres);
558 }
559
560 res = ctrl->mem_head;
561 while (res) {
562 tres = res;
563 res = res->next;
564 kfree(tres);
565 }
566
567 res = ctrl->p_mem_head;
568 while (res) {
569 tres = res;
570 res = res->next;
571 kfree(tres);
572 }
573
574 res = ctrl->bus_head;
575 while (res) {
576 tres = res;
577 res = res->next;
578 kfree(tres);
579 }
580
581 kfree (ctrl->pci_bus);
582
583 ctrl->hpc_ops->release_ctlr(ctrl);
584
585 tctrl = ctrl;
586 ctrl = ctrl->next;
587
588 kfree(tctrl);
589 }
590
591 for (loop = 0; loop < 256; loop++) {
592 next = pciehp_slot_list[loop];
593 while (next != NULL) {
594 res = next->io_head;
595 while (res) {
596 tres = res;
597 res = res->next;
598 kfree(tres);
599 }
600
601 res = next->mem_head;
602 while (res) {
603 tres = res;
604 res = res->next;
605 kfree(tres);
606 }
607
608 res = next->p_mem_head;
609 while (res) {
610 tres = res;
611 res = res->next;
612 kfree(tres);
613 }
614
615 res = next->bus_head;
616 while (res) {
617 tres = res;
618 res = res->next;
619 kfree(tres);
620 }
621
622 TempSlot = next;
623 next = next->next;
624 kfree(TempSlot);
625 }
626 }
627
628 /* Stop the notification mechanism */
629 pciehp_event_stop_thread();
630
631 }
632
633
634 static struct pci_device_id pcied_pci_tbl[] __devinitdata = {
635 {
636 class: ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
637 class_mask: ~0,
638 vendor: PCI_ANY_ID,
639 device: PCI_ANY_ID,
640 subvendor: PCI_ANY_ID,
641 subdevice: PCI_ANY_ID,
642 },
643 { /* end: all zeroes */ }
644 };
645
646 MODULE_DEVICE_TABLE(pci, pcied_pci_tbl);
647
648
649
650 static struct pci_driver pcie_driver = {
651 .name = PCIE_MODULE_NAME,
652 .id_table = pcied_pci_tbl,
653 .probe = pcie_probe,
654 /* remove: pcie_remove_one, */
655 };
656
657
658
pcied_init(void)659 static int __init pcied_init(void)
660 {
661 int retval = 0;
662
663 #ifdef CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE
664 pciehp_poll_mode = 1;
665 #endif
666 retval = pcie_start_thread();
667 if (retval)
668 goto error_hpc_init;
669
670 retval = pciehprm_init(PCI);
671 if (!retval) {
672 retval = pci_module_init(&pcie_driver);
673 dbg("pci_module_init = %d\n", retval);
674 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
675 }
676
677 error_hpc_init:
678 if (retval) {
679 pciehprm_cleanup();
680 pciehp_event_stop_thread();
681 }
682
683 return retval;
684 }
685
pcied_cleanup(void)686 static void __exit pcied_cleanup(void)
687 {
688 dbg("unload_pciehpd()\n");
689 unload_pciehpd();
690
691 pciehprm_cleanup();
692
693 dbg("pci_unregister_driver\n");
694 pci_unregister_driver(&pcie_driver);
695
696 info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
697 }
698
699
700 module_init(pcied_init);
701 module_exit(pcied_cleanup);
702
703
704