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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>, <kristen.c.accardi@intel.com>
27 *
28 */
29
30#include <linux/module.h>
31#include <linux/moduleparam.h>
32#include <linux/kernel.h>
33#include <linux/slab.h>
34#include <linux/types.h>
35#include <linux/pci.h>
36#include "pciehp.h"
37#include <linux/interrupt.h>
38#include <linux/time.h>
39
40/* Global variables */
41int pciehp_debug;
42int pciehp_poll_mode;
43int pciehp_poll_time;
44int pciehp_force;
45struct workqueue_struct *pciehp_wq;
46struct workqueue_struct *pciehp_ordered_wq;
47
48#define DRIVER_VERSION "0.4"
49#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
50#define DRIVER_DESC "PCI Express Hot Plug Controller Driver"
51
52MODULE_AUTHOR(DRIVER_AUTHOR);
53MODULE_DESCRIPTION(DRIVER_DESC);
54MODULE_LICENSE("GPL");
55
56module_param(pciehp_debug, bool, 0644);
57module_param(pciehp_poll_mode, bool, 0644);
58module_param(pciehp_poll_time, int, 0644);
59module_param(pciehp_force, bool, 0644);
60MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
61MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
62MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
63MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if OSHP is missing");
64
65#define PCIE_MODULE_NAME "pciehp"
66
67static int set_attention_status (struct hotplug_slot *slot, u8 value);
68static int enable_slot (struct hotplug_slot *slot);
69static int disable_slot (struct hotplug_slot *slot);
70static int get_power_status (struct hotplug_slot *slot, u8 *value);
71static int get_attention_status (struct hotplug_slot *slot, u8 *value);
72static int get_latch_status (struct hotplug_slot *slot, u8 *value);
73static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
74
75/**
76 * release_slot - free up the memory used by a slot
77 * @hotplug_slot: slot to free
78 */
79static void release_slot(struct hotplug_slot *hotplug_slot)
80{
81 struct slot *slot = hotplug_slot->private;
82
83 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
84 __func__, hotplug_slot_name(hotplug_slot));
85
86 kfree(hotplug_slot->ops);
87 kfree(hotplug_slot->info);
88 kfree(hotplug_slot);
89}
90
91static int init_slot(struct controller *ctrl)
92{
93 struct slot *slot = ctrl->slot;
94 struct hotplug_slot *hotplug = NULL;
95 struct hotplug_slot_info *info = NULL;
96 struct hotplug_slot_ops *ops = NULL;
97 char name[SLOT_NAME_SIZE];
98 int retval = -ENOMEM;
99
100 hotplug = kzalloc(sizeof(*hotplug), GFP_KERNEL);
101 if (!hotplug)
102 goto out;
103
104 info = kzalloc(sizeof(*info), GFP_KERNEL);
105 if (!info)
106 goto out;
107
108 /* Setup hotplug slot ops */
109 ops = kzalloc(sizeof(*ops), GFP_KERNEL);
110 if (!ops)
111 goto out;
112 ops->enable_slot = enable_slot;
113 ops->disable_slot = disable_slot;
114 ops->get_power_status = get_power_status;
115 ops->get_adapter_status = get_adapter_status;
116 if (MRL_SENS(ctrl))
117 ops->get_latch_status = get_latch_status;
118 if (ATTN_LED(ctrl)) {
119 ops->get_attention_status = get_attention_status;
120 ops->set_attention_status = set_attention_status;
121 }
122
123 /* register this slot with the hotplug pci core */
124 hotplug->info = info;
125 hotplug->private = slot;
126 hotplug->release = &release_slot;
127 hotplug->ops = ops;
128 slot->hotplug_slot = hotplug;
129 snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
130
131 ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:00 sun=%x\n",
132 pci_domain_nr(ctrl->pcie->port->subordinate),
133 ctrl->pcie->port->subordinate->number, PSN(ctrl));
134 retval = pci_hp_register(hotplug,
135 ctrl->pcie->port->subordinate, 0, name);
136 if (retval)
137 ctrl_err(ctrl,
138 "pci_hp_register failed with error %d\n", retval);
139out:
140 if (retval) {
141 kfree(ops);
142 kfree(info);
143 kfree(hotplug);
144 }
145 return retval;
146}
147
148static void cleanup_slot(struct controller *ctrl)
149{
150 pci_hp_deregister(ctrl->slot->hotplug_slot);
151}
152
153/*
154 * set_attention_status - Turns the Amber LED for a slot on, off or blink
155 */
156static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
157{
158 struct slot *slot = hotplug_slot->private;
159
160 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
161 __func__, slot_name(slot));
162
163 return pciehp_set_attention_status(slot, status);
164}
165
166
167static int enable_slot(struct hotplug_slot *hotplug_slot)
168{
169 struct slot *slot = hotplug_slot->private;
170
171 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
172 __func__, slot_name(slot));
173
174 return pciehp_sysfs_enable_slot(slot);
175}
176
177
178static int disable_slot(struct hotplug_slot *hotplug_slot)
179{
180 struct slot *slot = hotplug_slot->private;
181
182 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
183 __func__, slot_name(slot));
184
185 return pciehp_sysfs_disable_slot(slot);
186}
187
188static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
189{
190 struct slot *slot = hotplug_slot->private;
191
192 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
193 __func__, slot_name(slot));
194
195 return pciehp_get_power_status(slot, value);
196}
197
198static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
199{
200 struct slot *slot = hotplug_slot->private;
201
202 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
203 __func__, slot_name(slot));
204
205 return pciehp_get_attention_status(slot, value);
206}
207
208static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
209{
210 struct slot *slot = hotplug_slot->private;
211
212 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
213 __func__, slot_name(slot));
214
215 return pciehp_get_latch_status(slot, value);
216}
217
218static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
219{
220 struct slot *slot = hotplug_slot->private;
221
222 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
223 __func__, slot_name(slot));
224
225 return pciehp_get_adapter_status(slot, value);
226}
227
228static int pciehp_probe(struct pcie_device *dev)
229{
230 int rc;
231 struct controller *ctrl;
232 struct slot *slot;
233 u8 occupied, poweron;
234
235 if (pciehp_force)
236 dev_info(&dev->device,
237 "Bypassing BIOS check for pciehp use on %s\n",
238 pci_name(dev->port));
239 else if (pciehp_acpi_slot_detection_check(dev->port))
240 goto err_out_none;
241
242 ctrl = pcie_init(dev);
243 if (!ctrl) {
244 dev_err(&dev->device, "Controller initialization failed\n");
245 goto err_out_none;
246 }
247 set_service_data(dev, ctrl);
248
249 /* Setup the slot information structures */
250 rc = init_slot(ctrl);
251 if (rc) {
252 if (rc == -EBUSY)
253 ctrl_warn(ctrl, "Slot already registered by another "
254 "hotplug driver\n");
255 else
256 ctrl_err(ctrl, "Slot initialization failed\n");
257 goto err_out_release_ctlr;
258 }
259
260 /* Enable events after we have setup the data structures */
261 rc = pcie_init_notification(ctrl);
262 if (rc) {
263 ctrl_err(ctrl, "Notification initialization failed\n");
264 goto err_out_free_ctrl_slot;
265 }
266
267 /* Check if slot is occupied */
268 slot = ctrl->slot;
269 pciehp_get_adapter_status(slot, &occupied);
270 pciehp_get_power_status(slot, &poweron);
271 if (occupied && pciehp_force)
272 pciehp_enable_slot(slot);
273 /* If empty slot's power status is on, turn power off */
274 if (!occupied && poweron && POWER_CTRL(ctrl))
275 pciehp_power_off_slot(slot);
276
277 return 0;
278
279err_out_free_ctrl_slot:
280 cleanup_slot(ctrl);
281err_out_release_ctlr:
282 pciehp_release_ctrl(ctrl);
283err_out_none:
284 return -ENODEV;
285}
286
287static void pciehp_remove(struct pcie_device *dev)
288{
289 struct controller *ctrl = get_service_data(dev);
290
291 cleanup_slot(ctrl);
292 pciehp_release_ctrl(ctrl);
293}
294
295#ifdef CONFIG_PM
296static int pciehp_suspend (struct pcie_device *dev)
297{
298 dev_info(&dev->device, "%s ENTRY\n", __func__);
299 return 0;
300}
301
302static int pciehp_resume (struct pcie_device *dev)
303{
304 dev_info(&dev->device, "%s ENTRY\n", __func__);
305 if (pciehp_force) {
306 struct controller *ctrl = get_service_data(dev);
307 struct slot *slot;
308 u8 status;
309
310 /* reinitialize the chipset's event detection logic */
311 pcie_enable_notification(ctrl);
312
313 slot = ctrl->slot;
314
315 /* Check if slot is occupied */
316 pciehp_get_adapter_status(slot, &status);
317 if (status)
318 pciehp_enable_slot(slot);
319 else
320 pciehp_disable_slot(slot);
321 }
322 return 0;
323}
324#endif /* PM */
325
326static struct pcie_port_service_driver hpdriver_portdrv = {
327 .name = PCIE_MODULE_NAME,
328 .port_type = PCIE_ANY_PORT,
329 .service = PCIE_PORT_SERVICE_HP,
330
331 .probe = pciehp_probe,
332 .remove = pciehp_remove,
333
334#ifdef CONFIG_PM
335 .suspend = pciehp_suspend,
336 .resume = pciehp_resume,
337#endif /* PM */
338};
339
340static int __init pcied_init(void)
341{
342 int retval = 0;
343
344 pciehp_wq = alloc_workqueue("pciehp", 0, 0);
345 if (!pciehp_wq)
346 return -ENOMEM;
347
348 pciehp_ordered_wq = alloc_ordered_workqueue("pciehp_ordered", 0);
349 if (!pciehp_ordered_wq) {
350 destroy_workqueue(pciehp_wq);
351 return -ENOMEM;
352 }
353
354 pciehp_firmware_init();
355 retval = pcie_port_service_register(&hpdriver_portdrv);
356 dbg("pcie_port_service_register = %d\n", retval);
357 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
358 if (retval) {
359 destroy_workqueue(pciehp_ordered_wq);
360 destroy_workqueue(pciehp_wq);
361 dbg("Failure to register service\n");
362 }
363 return retval;
364}
365
366static void __exit pcied_cleanup(void)
367{
368 dbg("unload_pciehpd()\n");
369 destroy_workqueue(pciehp_ordered_wq);
370 destroy_workqueue(pciehp_wq);
371 pcie_port_service_unregister(&hpdriver_portdrv);
372 info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
373}
374
375module_init(pcied_init);
376module_exit(pcied_cleanup);
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>, <kristen.c.accardi@intel.com>
27 *
28 */
29
30#include <linux/module.h>
31#include <linux/moduleparam.h>
32#include <linux/kernel.h>
33#include <linux/slab.h>
34#include <linux/types.h>
35#include <linux/pci.h>
36#include "pciehp.h"
37#include <linux/interrupt.h>
38#include <linux/time.h>
39
40/* Global variables */
41bool pciehp_debug;
42bool pciehp_poll_mode;
43int pciehp_poll_time;
44static bool pciehp_force;
45
46#define DRIVER_VERSION "0.4"
47#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
48#define DRIVER_DESC "PCI Express Hot Plug Controller Driver"
49
50MODULE_AUTHOR(DRIVER_AUTHOR);
51MODULE_DESCRIPTION(DRIVER_DESC);
52MODULE_LICENSE("GPL");
53
54module_param(pciehp_debug, bool, 0644);
55module_param(pciehp_poll_mode, bool, 0644);
56module_param(pciehp_poll_time, int, 0644);
57module_param(pciehp_force, bool, 0644);
58MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
59MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
60MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
61MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if OSHP is missing");
62
63#define PCIE_MODULE_NAME "pciehp"
64
65static int set_attention_status (struct hotplug_slot *slot, u8 value);
66static int enable_slot (struct hotplug_slot *slot);
67static int disable_slot (struct hotplug_slot *slot);
68static int get_power_status (struct hotplug_slot *slot, u8 *value);
69static int get_attention_status (struct hotplug_slot *slot, u8 *value);
70static int get_latch_status (struct hotplug_slot *slot, u8 *value);
71static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
72static int reset_slot (struct hotplug_slot *slot, int probe);
73
74/**
75 * release_slot - free up the memory used by a slot
76 * @hotplug_slot: slot to free
77 */
78static void release_slot(struct hotplug_slot *hotplug_slot)
79{
80 struct slot *slot = hotplug_slot->private;
81
82 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
83 __func__, hotplug_slot_name(hotplug_slot));
84
85 kfree(hotplug_slot->ops);
86 kfree(hotplug_slot->info);
87 kfree(hotplug_slot);
88}
89
90static int init_slot(struct controller *ctrl)
91{
92 struct slot *slot = ctrl->slot;
93 struct hotplug_slot *hotplug = NULL;
94 struct hotplug_slot_info *info = NULL;
95 struct hotplug_slot_ops *ops = NULL;
96 char name[SLOT_NAME_SIZE];
97 int retval = -ENOMEM;
98
99 hotplug = kzalloc(sizeof(*hotplug), GFP_KERNEL);
100 if (!hotplug)
101 goto out;
102
103 info = kzalloc(sizeof(*info), GFP_KERNEL);
104 if (!info)
105 goto out;
106
107 /* Setup hotplug slot ops */
108 ops = kzalloc(sizeof(*ops), GFP_KERNEL);
109 if (!ops)
110 goto out;
111
112 ops->enable_slot = enable_slot;
113 ops->disable_slot = disable_slot;
114 ops->get_power_status = get_power_status;
115 ops->get_adapter_status = get_adapter_status;
116 ops->reset_slot = reset_slot;
117 if (MRL_SENS(ctrl))
118 ops->get_latch_status = get_latch_status;
119 if (ATTN_LED(ctrl)) {
120 ops->get_attention_status = get_attention_status;
121 ops->set_attention_status = set_attention_status;
122 }
123
124 /* register this slot with the hotplug pci core */
125 hotplug->info = info;
126 hotplug->private = slot;
127 hotplug->release = &release_slot;
128 hotplug->ops = ops;
129 slot->hotplug_slot = hotplug;
130 snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
131
132 ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:00 sun=%x\n",
133 pci_domain_nr(ctrl->pcie->port->subordinate),
134 ctrl->pcie->port->subordinate->number, PSN(ctrl));
135 retval = pci_hp_register(hotplug,
136 ctrl->pcie->port->subordinate, 0, name);
137 if (retval)
138 ctrl_err(ctrl,
139 "pci_hp_register failed with error %d\n", retval);
140out:
141 if (retval) {
142 kfree(ops);
143 kfree(info);
144 kfree(hotplug);
145 }
146 return retval;
147}
148
149static void cleanup_slot(struct controller *ctrl)
150{
151 pci_hp_deregister(ctrl->slot->hotplug_slot);
152}
153
154/*
155 * set_attention_status - Turns the Amber LED for a slot on, off or blink
156 */
157static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
158{
159 struct slot *slot = hotplug_slot->private;
160
161 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
162 __func__, slot_name(slot));
163
164 pciehp_set_attention_status(slot, status);
165 return 0;
166}
167
168
169static int enable_slot(struct hotplug_slot *hotplug_slot)
170{
171 struct slot *slot = hotplug_slot->private;
172
173 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
174 __func__, slot_name(slot));
175
176 return pciehp_sysfs_enable_slot(slot);
177}
178
179
180static int disable_slot(struct hotplug_slot *hotplug_slot)
181{
182 struct slot *slot = hotplug_slot->private;
183
184 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
185 __func__, slot_name(slot));
186
187 return pciehp_sysfs_disable_slot(slot);
188}
189
190static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
191{
192 struct slot *slot = hotplug_slot->private;
193
194 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
195 __func__, slot_name(slot));
196
197 pciehp_get_power_status(slot, value);
198 return 0;
199}
200
201static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
202{
203 struct slot *slot = hotplug_slot->private;
204
205 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
206 __func__, slot_name(slot));
207
208 pciehp_get_attention_status(slot, value);
209 return 0;
210}
211
212static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
213{
214 struct slot *slot = hotplug_slot->private;
215
216 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
217 __func__, slot_name(slot));
218
219 pciehp_get_latch_status(slot, value);
220 return 0;
221}
222
223static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
224{
225 struct slot *slot = hotplug_slot->private;
226
227 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
228 __func__, slot_name(slot));
229
230 pciehp_get_adapter_status(slot, value);
231 return 0;
232}
233
234static int reset_slot(struct hotplug_slot *hotplug_slot, int probe)
235{
236 struct slot *slot = hotplug_slot->private;
237
238 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
239 __func__, slot_name(slot));
240
241 return pciehp_reset_slot(slot, probe);
242}
243
244static int pciehp_probe(struct pcie_device *dev)
245{
246 int rc;
247 struct controller *ctrl;
248 struct slot *slot;
249 u8 occupied, poweron;
250
251 if (pciehp_force)
252 dev_info(&dev->device,
253 "Bypassing BIOS check for pciehp use on %s\n",
254 pci_name(dev->port));
255 else if (pciehp_acpi_slot_detection_check(dev->port))
256 goto err_out_none;
257
258 ctrl = pcie_init(dev);
259 if (!ctrl) {
260 dev_err(&dev->device, "Controller initialization failed\n");
261 goto err_out_none;
262 }
263 set_service_data(dev, ctrl);
264
265 /* Setup the slot information structures */
266 rc = init_slot(ctrl);
267 if (rc) {
268 if (rc == -EBUSY)
269 ctrl_warn(ctrl, "Slot already registered by another "
270 "hotplug driver\n");
271 else
272 ctrl_err(ctrl, "Slot initialization failed\n");
273 goto err_out_release_ctlr;
274 }
275
276 /* Enable events after we have setup the data structures */
277 rc = pcie_init_notification(ctrl);
278 if (rc) {
279 ctrl_err(ctrl, "Notification initialization failed\n");
280 goto err_out_free_ctrl_slot;
281 }
282
283 /* Check if slot is occupied */
284 slot = ctrl->slot;
285 pciehp_get_adapter_status(slot, &occupied);
286 pciehp_get_power_status(slot, &poweron);
287 if (occupied && pciehp_force) {
288 mutex_lock(&slot->hotplug_lock);
289 pciehp_enable_slot(slot);
290 mutex_unlock(&slot->hotplug_lock);
291 }
292 /* If empty slot's power status is on, turn power off */
293 if (!occupied && poweron && POWER_CTRL(ctrl))
294 pciehp_power_off_slot(slot);
295
296 return 0;
297
298err_out_free_ctrl_slot:
299 cleanup_slot(ctrl);
300err_out_release_ctlr:
301 pciehp_release_ctrl(ctrl);
302err_out_none:
303 return -ENODEV;
304}
305
306static void pciehp_remove(struct pcie_device *dev)
307{
308 struct controller *ctrl = get_service_data(dev);
309
310 cleanup_slot(ctrl);
311 pciehp_release_ctrl(ctrl);
312}
313
314#ifdef CONFIG_PM
315static int pciehp_suspend (struct pcie_device *dev)
316{
317 return 0;
318}
319
320static int pciehp_resume (struct pcie_device *dev)
321{
322 struct controller *ctrl;
323 struct slot *slot;
324 u8 status;
325
326 ctrl = get_service_data(dev);
327
328 /* reinitialize the chipset's event detection logic */
329 pcie_enable_notification(ctrl);
330
331 slot = ctrl->slot;
332
333 /* Check if slot is occupied */
334 pciehp_get_adapter_status(slot, &status);
335 mutex_lock(&slot->hotplug_lock);
336 if (status)
337 pciehp_enable_slot(slot);
338 else
339 pciehp_disable_slot(slot);
340 mutex_unlock(&slot->hotplug_lock);
341 return 0;
342}
343#endif /* PM */
344
345static struct pcie_port_service_driver hpdriver_portdrv = {
346 .name = PCIE_MODULE_NAME,
347 .port_type = PCIE_ANY_PORT,
348 .service = PCIE_PORT_SERVICE_HP,
349
350 .probe = pciehp_probe,
351 .remove = pciehp_remove,
352
353#ifdef CONFIG_PM
354 .suspend = pciehp_suspend,
355 .resume = pciehp_resume,
356#endif /* PM */
357};
358
359static int __init pcied_init(void)
360{
361 int retval = 0;
362
363 pciehp_firmware_init();
364 retval = pcie_port_service_register(&hpdriver_portdrv);
365 dbg("pcie_port_service_register = %d\n", retval);
366 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
367 if (retval)
368 dbg("Failure to register service\n");
369
370 return retval;
371}
372
373static void __exit pcied_cleanup(void)
374{
375 dbg("unload_pciehpd()\n");
376 pcie_port_service_unregister(&hpdriver_portdrv);
377 info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
378}
379
380module_init(pcied_init);
381module_exit(pcied_cleanup);