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1da177e4 LT |
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/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 "pciehp.h" | |
42 | #include "pciehprm.h" | |
43 | #include <linux/interrupt.h> | |
44 | ||
45 | /* Global variables */ | |
46 | int pciehp_debug; | |
47 | int pciehp_poll_mode; | |
48 | int pciehp_poll_time; | |
49 | struct controller *pciehp_ctrl_list; | |
50 | struct pci_func *pciehp_slot_list[256]; | |
51 | ||
52 | #define DRIVER_VERSION "0.4" | |
53 | #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>" | |
54 | #define DRIVER_DESC "PCI Express Hot Plug Controller Driver" | |
55 | ||
56 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
57 | MODULE_DESCRIPTION(DRIVER_DESC); | |
58 | MODULE_LICENSE("GPL"); | |
59 | ||
60 | module_param(pciehp_debug, bool, 0644); | |
61 | module_param(pciehp_poll_mode, bool, 0644); | |
62 | module_param(pciehp_poll_time, int, 0644); | |
63 | MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not"); | |
64 | MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not"); | |
65 | MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds"); | |
66 | ||
67 | #define PCIE_MODULE_NAME "pciehp" | |
68 | ||
69 | static int pcie_start_thread (void); | |
70 | static int set_attention_status (struct hotplug_slot *slot, u8 value); | |
71 | static int enable_slot (struct hotplug_slot *slot); | |
72 | static int disable_slot (struct hotplug_slot *slot); | |
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 | .get_power_status = get_power_status, | |
86 | .get_attention_status = get_attention_status, | |
87 | .get_latch_status = get_latch_status, | |
88 | .get_adapter_status = get_adapter_status, | |
89 | .get_max_bus_speed = get_max_bus_speed, | |
90 | .get_cur_bus_speed = get_cur_bus_speed, | |
91 | }; | |
92 | ||
93 | static int init_slots(struct controller *ctrl) | |
94 | { | |
95 | struct slot *new_slot; | |
96 | u8 number_of_slots; | |
97 | u8 slot_device; | |
98 | u32 slot_number; | |
99 | int result = -ENOMEM; | |
100 | ||
101 | dbg("%s\n",__FUNCTION__); | |
102 | ||
103 | number_of_slots = ctrl->num_slots; | |
104 | slot_device = ctrl->slot_device_offset; | |
105 | slot_number = ctrl->first_slot; | |
106 | ||
107 | while (number_of_slots) { | |
108 | new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL); | |
109 | if (!new_slot) | |
110 | goto error; | |
111 | ||
112 | memset(new_slot, 0, sizeof(struct slot)); | |
113 | new_slot->hotplug_slot = | |
114 | kmalloc(sizeof(*(new_slot->hotplug_slot)), | |
115 | GFP_KERNEL); | |
116 | if (!new_slot->hotplug_slot) | |
117 | goto error_slot; | |
118 | memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot)); | |
119 | ||
120 | new_slot->hotplug_slot->info = | |
121 | kmalloc(sizeof(*(new_slot->hotplug_slot->info)), | |
122 | GFP_KERNEL); | |
123 | if (!new_slot->hotplug_slot->info) | |
124 | goto error_hpslot; | |
125 | memset(new_slot->hotplug_slot->info, 0, | |
126 | sizeof(struct hotplug_slot_info)); | |
127 | new_slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, | |
128 | GFP_KERNEL); | |
129 | if (!new_slot->hotplug_slot->name) | |
130 | goto error_info; | |
131 | ||
132 | new_slot->ctrl = ctrl; | |
133 | new_slot->bus = ctrl->slot_bus; | |
134 | new_slot->device = slot_device; | |
135 | new_slot->hpc_ops = ctrl->hpc_ops; | |
136 | ||
137 | new_slot->number = ctrl->first_slot; | |
138 | new_slot->hp_slot = slot_device - ctrl->slot_device_offset; | |
139 | ||
140 | /* register this slot with the hotplug pci core */ | |
141 | new_slot->hotplug_slot->private = new_slot; | |
142 | make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot); | |
143 | new_slot->hotplug_slot->ops = &pciehp_hotplug_slot_ops; | |
144 | ||
145 | new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status)); | |
146 | new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status)); | |
147 | new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status)); | |
148 | new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status)); | |
149 | ||
150 | dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", | |
151 | new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset); | |
152 | result = pci_hp_register (new_slot->hotplug_slot); | |
153 | if (result) { | |
154 | err ("pci_hp_register failed with error %d\n", result); | |
155 | goto error_name; | |
156 | } | |
157 | ||
158 | new_slot->next = ctrl->slot; | |
159 | ctrl->slot = new_slot; | |
160 | ||
161 | number_of_slots--; | |
162 | slot_device++; | |
163 | slot_number += ctrl->slot_num_inc; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | ||
168 | error_name: | |
169 | kfree(new_slot->hotplug_slot->name); | |
170 | error_info: | |
171 | kfree(new_slot->hotplug_slot->info); | |
172 | error_hpslot: | |
173 | kfree(new_slot->hotplug_slot); | |
174 | error_slot: | |
175 | kfree(new_slot); | |
176 | error: | |
177 | return result; | |
178 | } | |
179 | ||
180 | ||
181 | static int cleanup_slots (struct controller * ctrl) | |
182 | { | |
183 | struct slot *old_slot, *next_slot; | |
184 | ||
185 | old_slot = ctrl->slot; | |
186 | ctrl->slot = NULL; | |
187 | ||
188 | while (old_slot) { | |
189 | next_slot = old_slot->next; | |
190 | pci_hp_deregister (old_slot->hotplug_slot); | |
191 | kfree(old_slot->hotplug_slot->info); | |
192 | kfree(old_slot->hotplug_slot->name); | |
193 | kfree(old_slot->hotplug_slot); | |
194 | kfree(old_slot); | |
195 | old_slot = next_slot; | |
196 | } | |
197 | ||
198 | ||
199 | return(0); | |
200 | } | |
201 | ||
202 | static int get_ctlr_slot_config(struct controller *ctrl) | |
203 | { | |
204 | int num_ctlr_slots; /* Not needed; PCI Express has 1 slot per port*/ | |
205 | int first_device_num; /* Not needed */ | |
206 | int physical_slot_num; | |
207 | u8 ctrlcap; | |
208 | int rc; | |
209 | ||
210 | rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &ctrlcap); | |
211 | if (rc) { | |
212 | err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device); | |
213 | return (-1); | |
214 | } | |
215 | ||
216 | ctrl->num_slots = num_ctlr_slots; /* PCI Express has 1 slot per port */ | |
217 | ctrl->slot_device_offset = first_device_num; | |
218 | ctrl->first_slot = physical_slot_num; | |
219 | ctrl->ctrlcap = ctrlcap; | |
220 | ||
221 | dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) ctrlcap(%x) for b:d (%x:%x)\n", | |
222 | __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, ctrlcap, | |
223 | ctrl->bus, ctrl->device); | |
224 | ||
225 | return (0); | |
226 | } | |
227 | ||
228 | ||
229 | /* | |
230 | * set_attention_status - Turns the Amber LED for a slot on, off or blink | |
231 | */ | |
232 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status) | |
233 | { | |
234 | struct slot *slot = hotplug_slot->private; | |
235 | ||
236 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
237 | ||
238 | hotplug_slot->info->attention_status = status; | |
239 | ||
240 | if (ATTN_LED(slot->ctrl->ctrlcap)) | |
241 | slot->hpc_ops->set_attention_status(slot, status); | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | ||
247 | static int enable_slot(struct hotplug_slot *hotplug_slot) | |
248 | { | |
249 | struct slot *slot = hotplug_slot->private; | |
250 | ||
251 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
252 | ||
253 | return pciehp_enable_slot(slot); | |
254 | } | |
255 | ||
256 | ||
257 | static int disable_slot(struct hotplug_slot *hotplug_slot) | |
258 | { | |
259 | struct slot *slot = hotplug_slot->private; | |
260 | ||
261 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
262 | ||
263 | return pciehp_disable_slot(slot); | |
264 | } | |
265 | ||
266 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) | |
267 | { | |
268 | struct slot *slot = hotplug_slot->private; | |
269 | int retval; | |
270 | ||
271 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
272 | ||
273 | retval = slot->hpc_ops->get_power_status(slot, value); | |
274 | if (retval < 0) | |
275 | *value = hotplug_slot->info->power_status; | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) | |
281 | { | |
282 | struct slot *slot = hotplug_slot->private; | |
283 | int retval; | |
284 | ||
285 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
286 | ||
287 | retval = slot->hpc_ops->get_attention_status(slot, value); | |
288 | if (retval < 0) | |
289 | *value = hotplug_slot->info->attention_status; | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) | |
295 | { | |
296 | struct slot *slot = hotplug_slot->private; | |
297 | int retval; | |
298 | ||
299 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
300 | ||
301 | retval = slot->hpc_ops->get_latch_status(slot, value); | |
302 | if (retval < 0) | |
303 | *value = hotplug_slot->info->latch_status; | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
308 | static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) | |
309 | { | |
310 | struct slot *slot = hotplug_slot->private; | |
311 | int retval; | |
312 | ||
313 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
314 | ||
315 | retval = slot->hpc_ops->get_adapter_status(slot, value); | |
316 | if (retval < 0) | |
317 | *value = hotplug_slot->info->adapter_status; | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
323 | { | |
324 | struct slot *slot = hotplug_slot->private; | |
325 | int retval; | |
326 | ||
327 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
328 | ||
329 | retval = slot->hpc_ops->get_max_bus_speed(slot, value); | |
330 | if (retval < 0) | |
331 | *value = PCI_SPEED_UNKNOWN; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
337 | { | |
338 | struct slot *slot = hotplug_slot->private; | |
339 | int retval; | |
340 | ||
341 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); | |
342 | ||
343 | retval = slot->hpc_ops->get_cur_bus_speed(slot, value); | |
344 | if (retval < 0) | |
345 | *value = PCI_SPEED_UNKNOWN; | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_id *id) | |
351 | { | |
352 | int rc; | |
353 | struct controller *ctrl; | |
354 | struct slot *t_slot; | |
355 | int first_device_num = 0 ; /* first PCI device number supported by this PCIE */ | |
356 | int num_ctlr_slots; /* number of slots supported by this HPC */ | |
357 | u8 value; | |
358 | struct pci_dev *pdev; | |
359 | ||
360 | dbg("%s: Called by hp_drv\n", __FUNCTION__); | |
361 | ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL); | |
362 | if (!ctrl) { | |
363 | err("%s : out of memory\n", __FUNCTION__); | |
364 | goto err_out_none; | |
365 | } | |
366 | memset(ctrl, 0, sizeof(struct controller)); | |
367 | ||
368 | dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid); | |
369 | ||
370 | pdev = dev->port; | |
371 | ||
372 | rc = pcie_init(ctrl, dev, | |
373 | (php_intr_callback_t) pciehp_handle_attention_button, | |
374 | (php_intr_callback_t) pciehp_handle_switch_change, | |
375 | (php_intr_callback_t) pciehp_handle_presence_change, | |
376 | (php_intr_callback_t) pciehp_handle_power_fault); | |
377 | if (rc) { | |
378 | dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME); | |
379 | goto err_out_free_ctrl; | |
380 | } | |
381 | ||
382 | ctrl->pci_dev = pdev; | |
383 | ||
384 | pci_set_drvdata(pdev, ctrl); | |
385 | ||
386 | ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); | |
387 | if (!ctrl->pci_bus) { | |
388 | err("%s: out of memory\n", __FUNCTION__); | |
389 | rc = -ENOMEM; | |
390 | goto err_out_unmap_mmio_region; | |
391 | } | |
392 | dbg("%s: ctrl->pci_bus %p\n", __FUNCTION__, ctrl->pci_bus); | |
393 | memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus)); | |
394 | ctrl->bus = pdev->bus->number; /* ctrl bus */ | |
395 | ctrl->slot_bus = pdev->subordinate->number; /* bus controlled by this HPC */ | |
396 | ||
397 | ctrl->device = PCI_SLOT(pdev->devfn); | |
398 | ctrl->function = PCI_FUNC(pdev->devfn); | |
399 | dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", __FUNCTION__, | |
400 | 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 | dbg("%s: Before calling pciehp_save_config, ctrl->bus %x,ctrl->slot_bus %x\n", | |
416 | __FUNCTION__,ctrl->bus, ctrl->slot_bus); | |
417 | rc = pciehp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num); | |
418 | if (rc) { | |
419 | err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc); | |
420 | goto err_out_free_ctrl_bus; | |
421 | } | |
422 | ||
423 | /* Get IO, memory, and IRQ resources for new devices */ | |
424 | rc = pciehprm_find_available_resources(ctrl); | |
425 | ctrl->add_support = !rc; | |
426 | ||
427 | if (rc) { | |
428 | dbg("pciehprm_find_available_resources = %#x\n", rc); | |
429 | err("unable to locate PCI configuration resources for hot plug add.\n"); | |
430 | goto err_out_free_ctrl_bus; | |
431 | } | |
432 | ||
433 | /* Setup the slot information structures */ | |
434 | rc = init_slots(ctrl); | |
435 | if (rc) { | |
436 | err(msg_initialization_err, 6); | |
437 | goto err_out_free_ctrl_slot; | |
438 | } | |
439 | ||
440 | t_slot = pciehp_find_slot(ctrl, first_device_num); | |
441 | dbg("%s: t_slot %p\n", __FUNCTION__, t_slot); | |
442 | ||
443 | /* Finish setting up the hot plug ctrl device */ | |
444 | ctrl->next_event = 0; | |
445 | ||
446 | if (!pciehp_ctrl_list) { | |
447 | pciehp_ctrl_list = ctrl; | |
448 | ctrl->next = NULL; | |
449 | } else { | |
450 | ctrl->next = pciehp_ctrl_list; | |
451 | pciehp_ctrl_list = ctrl; | |
452 | } | |
453 | ||
454 | /* Wait for exclusive access to hardware */ | |
455 | down(&ctrl->crit_sect); | |
456 | ||
457 | t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */ | |
458 | dbg("%s: adpater value %x\n", __FUNCTION__, value); | |
459 | ||
460 | if ((POWER_CTRL(ctrl->ctrlcap)) && !value) { | |
461 | rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/ | |
462 | if (rc) { | |
463 | /* Done with exclusive hardware access */ | |
464 | up(&ctrl->crit_sect); | |
465 | goto err_out_free_ctrl_slot; | |
466 | } else | |
467 | /* Wait for the command to complete */ | |
468 | wait_for_ctrl_irq (ctrl); | |
469 | } | |
470 | ||
471 | /* Done with exclusive hardware access */ | |
472 | up(&ctrl->crit_sect); | |
473 | ||
474 | return 0; | |
475 | ||
476 | err_out_free_ctrl_slot: | |
477 | cleanup_slots(ctrl); | |
478 | err_out_free_ctrl_bus: | |
479 | kfree(ctrl->pci_bus); | |
480 | err_out_unmap_mmio_region: | |
481 | ctrl->hpc_ops->release_ctlr(ctrl); | |
482 | err_out_free_ctrl: | |
483 | kfree(ctrl); | |
484 | err_out_none: | |
485 | return -ENODEV; | |
486 | } | |
487 | ||
488 | ||
489 | static int pcie_start_thread(void) | |
490 | { | |
491 | int loop; | |
492 | int retval = 0; | |
493 | ||
494 | dbg("Initialize + Start the notification/polling mechanism \n"); | |
495 | ||
496 | retval = pciehp_event_start_thread(); | |
497 | if (retval) { | |
498 | dbg("pciehp_event_start_thread() failed\n"); | |
499 | return retval; | |
500 | } | |
501 | ||
502 | dbg("Initialize slot lists\n"); | |
503 | /* One slot list for each bus in the system */ | |
504 | for (loop = 0; loop < 256; loop++) { | |
505 | pciehp_slot_list[loop] = NULL; | |
506 | } | |
507 | ||
508 | return retval; | |
509 | } | |
510 | ||
511 | static inline void __exit | |
512 | free_pciehp_res(struct pci_resource *res) | |
513 | { | |
514 | struct pci_resource *tres; | |
515 | ||
516 | while (res) { | |
517 | tres = res; | |
518 | res = res->next; | |
519 | kfree(tres); | |
520 | } | |
521 | } | |
522 | ||
523 | static void __exit unload_pciehpd(void) | |
524 | { | |
525 | struct pci_func *next; | |
526 | struct pci_func *TempSlot; | |
527 | int loop; | |
528 | struct controller *ctrl; | |
529 | struct controller *tctrl; | |
530 | ||
531 | ctrl = pciehp_ctrl_list; | |
532 | ||
533 | while (ctrl) { | |
534 | cleanup_slots(ctrl); | |
535 | ||
536 | free_pciehp_res(ctrl->io_head); | |
537 | free_pciehp_res(ctrl->mem_head); | |
538 | free_pciehp_res(ctrl->p_mem_head); | |
539 | free_pciehp_res(ctrl->bus_head); | |
540 | ||
541 | kfree (ctrl->pci_bus); | |
542 | ||
543 | ctrl->hpc_ops->release_ctlr(ctrl); | |
544 | ||
545 | tctrl = ctrl; | |
546 | ctrl = ctrl->next; | |
547 | ||
548 | kfree(tctrl); | |
549 | } | |
550 | ||
551 | for (loop = 0; loop < 256; loop++) { | |
552 | next = pciehp_slot_list[loop]; | |
553 | while (next != NULL) { | |
554 | free_pciehp_res(next->io_head); | |
555 | free_pciehp_res(next->mem_head); | |
556 | free_pciehp_res(next->p_mem_head); | |
557 | free_pciehp_res(next->bus_head); | |
558 | ||
559 | TempSlot = next; | |
560 | next = next->next; | |
561 | kfree(TempSlot); | |
562 | } | |
563 | } | |
564 | ||
565 | /* Stop the notification mechanism */ | |
566 | pciehp_event_stop_thread(); | |
567 | ||
568 | } | |
569 | ||
570 | int hpdriver_context = 0; | |
571 | ||
572 | static void pciehp_remove (struct pcie_device *device) | |
573 | { | |
574 | printk("%s ENTRY\n", __FUNCTION__); | |
575 | printk("%s -> Call free_irq for irq = %d\n", | |
576 | __FUNCTION__, device->irq); | |
577 | free_irq(device->irq, &hpdriver_context); | |
578 | } | |
579 | ||
580 | #ifdef CONFIG_PM | |
7f4927c1 | 581 | static int pciehp_suspend (struct pcie_device *dev, pm_message_t state) |
1da177e4 LT |
582 | { |
583 | printk("%s ENTRY\n", __FUNCTION__); | |
584 | return 0; | |
585 | } | |
586 | ||
587 | static int pciehp_resume (struct pcie_device *dev) | |
588 | { | |
589 | printk("%s ENTRY\n", __FUNCTION__); | |
590 | return 0; | |
591 | } | |
592 | #endif | |
593 | ||
594 | static struct pcie_port_service_id port_pci_ids[] = { { | |
595 | .vendor = PCI_ANY_ID, | |
596 | .device = PCI_ANY_ID, | |
597 | .port_type = PCIE_RC_PORT, | |
598 | .service_type = PCIE_PORT_SERVICE_HP, | |
599 | .driver_data = 0, | |
600 | }, { /* end: all zeroes */ } | |
601 | }; | |
602 | static const char device_name[] = "hpdriver"; | |
603 | ||
604 | static struct pcie_port_service_driver hpdriver_portdrv = { | |
605 | .name = (char *)device_name, | |
606 | .id_table = &port_pci_ids[0], | |
607 | ||
608 | .probe = pciehp_probe, | |
609 | .remove = pciehp_remove, | |
610 | ||
611 | #ifdef CONFIG_PM | |
612 | .suspend = pciehp_suspend, | |
613 | .resume = pciehp_resume, | |
614 | #endif /* PM */ | |
615 | }; | |
616 | ||
617 | static int __init pcied_init(void) | |
618 | { | |
619 | int retval = 0; | |
620 | ||
621 | #ifdef CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE | |
622 | pciehp_poll_mode = 1; | |
623 | #endif | |
624 | ||
625 | retval = pcie_start_thread(); | |
626 | if (retval) | |
627 | goto error_hpc_init; | |
628 | ||
629 | retval = pciehprm_init(PCI); | |
630 | if (!retval) { | |
631 | retval = pcie_port_service_register(&hpdriver_portdrv); | |
632 | dbg("pcie_port_service_register = %d\n", retval); | |
633 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
634 | if (retval) | |
635 | dbg("%s: Failure to register service\n", __FUNCTION__); | |
636 | } | |
637 | ||
638 | error_hpc_init: | |
639 | if (retval) { | |
640 | pciehprm_cleanup(); | |
641 | pciehp_event_stop_thread(); | |
642 | } else | |
643 | pciehprm_print_pirt(); | |
644 | ||
645 | return retval; | |
646 | } | |
647 | ||
648 | static void __exit pcied_cleanup(void) | |
649 | { | |
650 | dbg("unload_pciehpd()\n"); | |
651 | unload_pciehpd(); | |
652 | ||
653 | pciehprm_cleanup(); | |
654 | ||
655 | dbg("pcie_port_service_unregister\n"); | |
656 | pcie_port_service_unregister(&hpdriver_portdrv); | |
657 | ||
658 | info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); | |
659 | } | |
660 | ||
661 | module_init(pcied_init); | |
662 | module_exit(pcied_cleanup); |