[mirror_ubuntu-zesty-kernel.git] / drivers / pci / hotplug / pciehp_core.c

/*
 * PCI Express Hot Plug Controller Driver
 *
 * Copyright (C) 1995,2001 Compaq Computer Corporation
 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
 * Copyright (C) 2001 IBM Corp.
 * Copyright (C) 2003-2004 Intel Corporation
 *
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 * NON INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "pciehp.h"
#include <linux/interrupt.h>
#include <linux/time.h>

/* Global variables */
bool pciehp_debug;
bool pciehp_poll_mode;
int pciehp_poll_time;
static bool pciehp_force;

#define DRIVER_VERSION	"0.4"
#define DRIVER_AUTHOR	"Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
#define DRIVER_DESC	"PCI Express Hot Plug Controller Driver"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

module_param(pciehp_debug, bool, 0644);
module_param(pciehp_poll_mode, bool, 0644);
module_param(pciehp_poll_time, int, 0644);
module_param(pciehp_force, bool, 0644);
MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if OSHP is missing");

#define PCIE_MODULE_NAME "pciehp"

static int set_attention_status(struct hotplug_slot *slot, u8 value);
static int enable_slot(struct hotplug_slot *slot);
static int disable_slot(struct hotplug_slot *slot);
static int get_power_status(struct hotplug_slot *slot, u8 *value);
static int get_attention_status(struct hotplug_slot *slot, u8 *value);
static int get_latch_status(struct hotplug_slot *slot, u8 *value);
static int get_adapter_status(struct hotplug_slot *slot, u8 *value);
static int reset_slot(struct hotplug_slot *slot, int probe);

/**
 * release_slot - free up the memory used by a slot
 * @hotplug_slot: slot to free
 */
static void release_slot(struct hotplug_slot *hotplug_slot)
{
	kfree(hotplug_slot->ops);
	kfree(hotplug_slot->info);
	kfree(hotplug_slot);
}

static int init_slot(struct controller *ctrl)
{
	struct slot *slot = ctrl->slot;
	struct hotplug_slot *hotplug = NULL;
	struct hotplug_slot_info *info = NULL;
	struct hotplug_slot_ops *ops = NULL;
	char name[SLOT_NAME_SIZE];
	int retval = -ENOMEM;

	hotplug = kzalloc(sizeof(*hotplug), GFP_KERNEL);
	if (!hotplug)
		goto out;

	info = kzalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		goto out;

	/* Setup hotplug slot ops */
	ops = kzalloc(sizeof(*ops), GFP_KERNEL);
	if (!ops)
		goto out;

	ops->enable_slot = enable_slot;
	ops->disable_slot = disable_slot;
	ops->get_power_status = get_power_status;
	ops->get_adapter_status = get_adapter_status;
	ops->reset_slot = reset_slot;
	if (MRL_SENS(ctrl))
		ops->get_latch_status = get_latch_status;
	if (ATTN_LED(ctrl)) {
		ops->get_attention_status = get_attention_status;
		ops->set_attention_status = set_attention_status;
	}

	/* register this slot with the hotplug pci core */
	hotplug->info = info;
	hotplug->private = slot;
	hotplug->release = &release_slot;
	hotplug->ops = ops;
	slot->hotplug_slot = hotplug;
	snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));

	retval = pci_hp_register(hotplug,
				 ctrl->pcie->port->subordinate, 0, name);
	if (retval)
		ctrl_err(ctrl, "pci_hp_register failed: error %d\n", retval);
out:
	if (retval) {
		kfree(ops);
		kfree(info);
		kfree(hotplug);
	}
	return retval;
}

static void cleanup_slot(struct controller *ctrl)
{
	pci_hp_deregister(ctrl->slot->hotplug_slot);
}

/*
 * set_attention_status - Turns the Amber LED for a slot on, off or blink
 */
static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
{
	struct slot *slot = hotplug_slot->private;

	pciehp_set_attention_status(slot, status);
	return 0;
}


static int enable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = hotplug_slot->private;

	return pciehp_sysfs_enable_slot(slot);
}


static int disable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = hotplug_slot->private;

	return pciehp_sysfs_disable_slot(slot);
}

static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pciehp_get_power_status(slot, value);
	return 0;
}

static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pciehp_get_attention_status(slot, value);
	return 0;
}

static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pciehp_get_latch_status(slot, value);
	return 0;
}

static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pciehp_get_adapter_status(slot, value);
	return 0;
}

static int reset_slot(struct hotplug_slot *hotplug_slot, int probe)
{
	struct slot *slot = hotplug_slot->private;

	return pciehp_reset_slot(slot, probe);
}

static int pciehp_probe(struct pcie_device *dev)
{
	int rc;
	struct controller *ctrl;
	struct slot *slot;
	u8 occupied, poweron;

	/* If this is not a "hotplug" service, we have no business here. */
	if (dev->service != PCIE_PORT_SERVICE_HP)
		return -ENODEV;

	if (!dev->port->subordinate) {
		/* Can happen if we run out of bus numbers during probe */
		dev_err(&dev->device,
			"Hotplug bridge without secondary bus, ignoring\n");
		return -ENODEV;
	}

	ctrl = pcie_init(dev);
	if (!ctrl) {
		dev_err(&dev->device, "Controller initialization failed\n");
		return -ENODEV;
	}
	set_service_data(dev, ctrl);

	/* Setup the slot information structures */
	rc = init_slot(ctrl);
	if (rc) {
		if (rc == -EBUSY)
			ctrl_warn(ctrl, "Slot already registered by another hotplug driver\n");
		else
			ctrl_err(ctrl, "Slot initialization failed (%d)\n", rc);
		goto err_out_release_ctlr;
	}

	/* Enable events after we have setup the data structures */
	rc = pcie_init_notification(ctrl);
	if (rc) {
		ctrl_err(ctrl, "Notification initialization failed (%d)\n", rc);
		goto err_out_free_ctrl_slot;
	}

	/* Check if slot is occupied */
	slot = ctrl->slot;
	pciehp_get_adapter_status(slot, &occupied);
	pciehp_get_power_status(slot, &poweron);
	if (occupied && pciehp_force) {
		mutex_lock(&slot->hotplug_lock);
		pciehp_enable_slot(slot);
		mutex_unlock(&slot->hotplug_lock);
	}
	/* If empty slot's power status is on, turn power off */
	if (!occupied && poweron && POWER_CTRL(ctrl))
		pciehp_power_off_slot(slot);

	return 0;

err_out_free_ctrl_slot:
	cleanup_slot(ctrl);
err_out_release_ctlr:
	pciehp_release_ctrl(ctrl);
	return -ENODEV;
}

static void pciehp_remove(struct pcie_device *dev)
{
	struct controller *ctrl = get_service_data(dev);

	cleanup_slot(ctrl);
	pciehp_release_ctrl(ctrl);
}

#ifdef CONFIG_PM
static int pciehp_suspend(struct pcie_device *dev)
{
	return 0;
}

static int pciehp_resume(struct pcie_device *dev)
{
	struct controller *ctrl;
	struct slot *slot;
	u8 status;

	ctrl = get_service_data(dev);

	/* reinitialize the chipset's event detection logic */
	pcie_enable_notification(ctrl);

	slot = ctrl->slot;

	/* Check if slot is occupied */
	pciehp_get_adapter_status(slot, &status);
	mutex_lock(&slot->hotplug_lock);
	if (status)
		pciehp_enable_slot(slot);
	else
		pciehp_disable_slot(slot);
	mutex_unlock(&slot->hotplug_lock);
	return 0;
}
#endif /* PM */

static struct pcie_port_service_driver hpdriver_portdrv = {
	.name		= PCIE_MODULE_NAME,
	.port_type	= PCIE_ANY_PORT,
	.service	= PCIE_PORT_SERVICE_HP,

	.probe		= pciehp_probe,
	.remove		= pciehp_remove,

#ifdef	CONFIG_PM
	.suspend	= pciehp_suspend,
	.resume		= pciehp_resume,
#endif	/* PM */
};

static int __init pcied_init(void)
{
	int retval = 0;

	retval = pcie_port_service_register(&hpdriver_portdrv);
	dbg("pcie_port_service_register = %d\n", retval);
	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
	if (retval)
		dbg("Failure to register service\n");

	return retval;
}

static void __exit pcied_cleanup(void)
{
	dbg("unload_pciehpd()\n");
	pcie_port_service_unregister(&hpdriver_portdrv);
	info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}

module_init(pcied_init);
module_exit(pcied_cleanup);
Commit	Line	Data
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	*
8cf4c195	26	* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
1da177e4 LT	27	*
	28	*/
	29
1da177e4 LT	30	#include <linux/module.h>
	31	#include <linux/moduleparam.h>
	32	#include <linux/kernel.h>
5a0e3ad6	33	#include <linux/slab.h>
1da177e4	34	#include <linux/types.h>
1da177e4	35	#include <linux/pci.h>
1da177e4	36	#include "pciehp.h"
1da177e4	37	#include <linux/interrupt.h>
34d03419	38	#include <linux/time.h>
1da177e4 LT	39
1da177e4 LT	40	/* Global variables */
90ab5ee9 RR	41	bool pciehp_debug;
90ab5ee9 RR	42	bool pciehp_poll_mode;
1da177e4	43	int pciehp_poll_time;
0b950f0f	44	static bool pciehp_force;
1da177e4 LT	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
	50	MODULE_AUTHOR(DRIVER_AUTHOR);
	51	MODULE_DESCRIPTION(DRIVER_DESC);
	52	MODULE_LICENSE("GPL");
	53
	54	module_param(pciehp_debug, bool, 0644);
	55	module_param(pciehp_poll_mode, bool, 0644);
	56	module_param(pciehp_poll_time, int, 0644);
a3a45ec8	57	module_param(pciehp_force, bool, 0644);
1da177e4 LT	58	MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
	59	MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
	60	MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
28eb5f27	61	MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if OSHP is missing");
1da177e4 LT	62
	63	#define PCIE_MODULE_NAME "pciehp"
	64
ff3ce480 BS	65	static int set_attention_status(struct hotplug_slot *slot, u8 value);
	66	static int enable_slot(struct hotplug_slot *slot);
	67	static int disable_slot(struct hotplug_slot *slot);
	68	static int get_power_status(struct hotplug_slot slot, u8 value);
	69	static int get_attention_status(struct hotplug_slot slot, u8 value);
	70	static int get_latch_status(struct hotplug_slot slot, u8 value);
	71	static int get_adapter_status(struct hotplug_slot slot, u8 value);
	72	static int reset_slot(struct hotplug_slot *slot, int probe);
1da177e4	73
b308240b DS	74	/**
	75	* release_slot - free up the memory used by a slot
	76	* @hotplug_slot: slot to free
	77	*/
	78	static void release_slot(struct hotplug_slot *hotplug_slot)
	79	{
586f1d66	80	kfree(hotplug_slot->ops);
c4635eb0 KK	81	kfree(hotplug_slot->info);
c4635eb0 KK	82	kfree(hotplug_slot);
a0b17257 KK	83	}
a0b17257 KK	84
8720d27d	85	static int init_slot(struct controller *ctrl)
1da177e4	86	{
8720d27d KK	87	struct slot *slot = ctrl->slot;
	88	struct hotplug_slot *hotplug = NULL;
	89	struct hotplug_slot_info *info = NULL;
586f1d66	90	struct hotplug_slot_ops *ops = NULL;
e1acb24f	91	char name[SLOT_NAME_SIZE];
a0b17257	92	int retval = -ENOMEM;
1da177e4	93
8720d27d KK	94	hotplug = kzalloc(sizeof(*hotplug), GFP_KERNEL);
	95	if (!hotplug)
	96	goto out;
	97
	98	info = kzalloc(sizeof(*info), GFP_KERNEL);
	99	if (!info)
	100	goto out;
	101
586f1d66 KK	102	/* Setup hotplug slot ops */
	103	ops = kzalloc(sizeof(*ops), GFP_KERNEL);
	104	if (!ops)
	105	goto out;
9cad7f58	106
586f1d66 KK	107	ops->enable_slot = enable_slot;
	108	ops->disable_slot = disable_slot;
	109	ops->get_power_status = get_power_status;
	110	ops->get_adapter_status = get_adapter_status;
2e35afae	111	ops->reset_slot = reset_slot;
586f1d66 KK	112	if (MRL_SENS(ctrl))
	113	ops->get_latch_status = get_latch_status;
	114	if (ATTN_LED(ctrl)) {
	115	ops->get_attention_status = get_attention_status;
	116	ops->set_attention_status = set_attention_status;
	117	}
	118
8720d27d KK	119	/* register this slot with the hotplug pci core */
	120	hotplug->info = info;
	121	hotplug->private = slot;
	122	hotplug->release = &release_slot;
586f1d66	123	hotplug->ops = ops;
8720d27d	124	slot->hotplug_slot = hotplug;
07a09694	125	snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
8720d27d	126
8720d27d	127	retval = pci_hp_register(hotplug,
385e2491	128	ctrl->pcie->port->subordinate, 0, name);
445f7985	129	if (retval)
3784e0c6	130	ctrl_err(ctrl, "pci_hp_register failed: error %d\n", retval);
8720d27d KK	131	out:
8720d27d KK	132	if (retval) {
586f1d66	133	kfree(ops);
8720d27d KK	134	kfree(info);
8720d27d KK	135	kfree(hotplug);
1da177e4	136	}
a0b17257	137	return retval;
1da177e4 LT	138	}
1da177e4 LT	139
8720d27d	140	static void cleanup_slot(struct controller *ctrl)
1da177e4	141	{
8720d27d	142	pci_hp_deregister(ctrl->slot->hotplug_slot);
1da177e4 LT	143	}
1da177e4 LT	144
1da177e4 LT	145	/*
	146	* set_attention_status - Turns the Amber LED for a slot on, off or blink
	147	*/
	148	static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
	149	{
	150	struct slot *slot = hotplug_slot->private;
	151
6dae6202 BH	152	pciehp_set_attention_status(slot, status);
6dae6202 BH	153	return 0;
1da177e4 LT	154	}
	155
	156
	157	static int enable_slot(struct hotplug_slot *hotplug_slot)
	158	{
	159	struct slot *slot = hotplug_slot->private;
	160
5d386e1a	161	return pciehp_sysfs_enable_slot(slot);
1da177e4 LT	162	}
	163
	164
	165	static int disable_slot(struct hotplug_slot *hotplug_slot)
	166	{
	167	struct slot *slot = hotplug_slot->private;
	168
5d386e1a	169	return pciehp_sysfs_disable_slot(slot);
1da177e4 LT	170	}
	171
	172	static int get_power_status(struct hotplug_slot hotplug_slot, u8 value)
	173	{
	174	struct slot *slot = hotplug_slot->private;
1da177e4	175
6dae6202 BH	176	pciehp_get_power_status(slot, value);
6dae6202 BH	177	return 0;
1da177e4 LT	178	}
	179
	180	static int get_attention_status(struct hotplug_slot hotplug_slot, u8 value)
	181	{
	182	struct slot *slot = hotplug_slot->private;
1da177e4	183
6dae6202 BH	184	pciehp_get_attention_status(slot, value);
6dae6202 BH	185	return 0;
1da177e4 LT	186	}
	187
	188	static int get_latch_status(struct hotplug_slot hotplug_slot, u8 value)
	189	{
	190	struct slot *slot = hotplug_slot->private;
1da177e4	191
6dae6202 BH	192	pciehp_get_latch_status(slot, value);
6dae6202 BH	193	return 0;
1da177e4 LT	194	}
	195
	196	static int get_adapter_status(struct hotplug_slot hotplug_slot, u8 value)
	197	{
	198	struct slot *slot = hotplug_slot->private;
1da177e4	199
6dae6202 BH	200	pciehp_get_adapter_status(slot, value);
6dae6202 BH	201	return 0;
1da177e4 LT	202	}
1da177e4 LT	203
2e35afae AW	204	static int reset_slot(struct hotplug_slot *hotplug_slot, int probe)
	205	{
	206	struct slot *slot = hotplug_slot->private;
	207
2e35afae AW	208	return pciehp_reset_slot(slot, probe);
	209	}
	210
0516c8bc	211	static int pciehp_probe(struct pcie_device *dev)
1da177e4 LT	212	{
	213	int rc;
	214	struct controller *ctrl;
8720d27d	215	struct slot *slot;
8792e11f	216	u8 occupied, poweron;
125c39f7	217
e705c295 RW	218	/* If this is not a "hotplug" service, we have no business here. */
	219	if (dev->service != PCIE_PORT_SERVICE_HP)
	220	return -ENODEV;
a073a826	221
62e4492c AN	222	if (!dev->port->subordinate) {
	223	/* Can happen if we run out of bus numbers during probe */
	224	dev_err(&dev->device,
	225	"Hotplug bridge without secondary bus, ignoring\n");
2af31f41	226	return -ENODEV;
62e4492c AN	227	}
62e4492c AN	228
c4635eb0	229	ctrl = pcie_init(dev);
1da177e4	230	if (!ctrl) {
18b341b7	231	dev_err(&dev->device, "Controller initialization failed\n");
2af31f41	232	return -ENODEV;
1da177e4	233	}
b9708940	234	set_service_data(dev, ctrl);
1da177e4	235
1da177e4	236	/* Setup the slot information structures */
8720d27d	237	rc = init_slot(ctrl);
1da177e4	238	if (rc) {
f46753c5	239	if (rc == -EBUSY)
227f0647	240	ctrl_warn(ctrl, "Slot already registered by another hotplug driver\n");
f46753c5	241	else
3784e0c6	242	ctrl_err(ctrl, "Slot initialization failed (%d)\n", rc);
a8c2b635	243	goto err_out_release_ctlr;
1da177e4 LT	244	}
1da177e4 LT	245
dbc7e1e5 EB	246	/* Enable events after we have setup the data structures */
	247	rc = pcie_init_notification(ctrl);
	248	if (rc) {
3784e0c6	249	ctrl_err(ctrl, "Notification initialization failed (%d)\n", rc);
65b947bc	250	goto err_out_free_ctrl_slot;
dbc7e1e5 EB	251	}
dbc7e1e5 EB	252
db9aaf0b	253	/* Check if slot is occupied */
8720d27d	254	slot = ctrl->slot;
8792e11f KK	255	pciehp_get_adapter_status(slot, &occupied);
8792e11f KK	256	pciehp_get_power_status(slot, &poweron);
50b52fde RJ	257	if (occupied && pciehp_force) {
50b52fde RJ	258	mutex_lock(&slot->hotplug_lock);
8792e11f	259	pciehp_enable_slot(slot);
50b52fde RJ	260	mutex_unlock(&slot->hotplug_lock);
50b52fde RJ	261	}
8792e11f KK	262	/* If empty slot's power status is on, turn power off */
	263	if (!occupied && poweron && POWER_CTRL(ctrl))
	264	pciehp_power_off_slot(slot);
1da177e4	265
1da177e4 LT	266	return 0;
	267
	268	err_out_free_ctrl_slot:
8720d27d	269	cleanup_slot(ctrl);
a8c2b635	270	err_out_release_ctlr:
82a9e79e	271	pciehp_release_ctrl(ctrl);
1da177e4 LT	272	return -ENODEV;
	273	}
	274
82a9e79e	275	static void pciehp_remove(struct pcie_device *dev)
1da177e4	276	{
b9708940	277	struct controller *ctrl = get_service_data(dev);
1da177e4	278
8720d27d	279	cleanup_slot(ctrl);
82a9e79e	280	pciehp_release_ctrl(ctrl);
1da177e4 LT	281	}
	282
	283	#ifdef CONFIG_PM
3c78bc61	284	static int pciehp_suspend(struct pcie_device *dev)
1da177e4	285	{
1da177e4 LT	286	return 0;
	287	}
	288
3c78bc61	289	static int pciehp_resume(struct pcie_device *dev)
1da177e4	290	{
87683e22 ON	291	struct controller *ctrl;
	292	struct slot *slot;
	293	u8 status;
	294
87683e22	295	ctrl = get_service_data(dev);
cd2fe83a	296
87683e22 ON	297	/* reinitialize the chipset's event detection logic */
87683e22 ON	298	pcie_enable_notification(ctrl);
cd2fe83a	299
87683e22	300	slot = ctrl->slot;
cd2fe83a	301
87683e22 ON	302	/* Check if slot is occupied */
87683e22 ON	303	pciehp_get_adapter_status(slot, &status);
50b52fde	304	mutex_lock(&slot->hotplug_lock);
87683e22 ON	305	if (status)
	306	pciehp_enable_slot(slot);
	307	else
	308	pciehp_disable_slot(slot);
50b52fde	309	mutex_unlock(&slot->hotplug_lock);
1da177e4 LT	310	return 0;
1da177e4 LT	311	}
3a3c244c	312	#endif /* PM */
1da177e4	313
1da177e4	314	static struct pcie_port_service_driver hpdriver_portdrv = {
83e9ad54	315	.name = PCIE_MODULE_NAME,
22106368 RW	316	.port_type = PCIE_ANY_PORT,
22106368 RW	317	.service = PCIE_PORT_SERVICE_HP,
1da177e4 LT	318
	319	.probe = pciehp_probe,
	320	.remove = pciehp_remove,
	321
	322	#ifdef CONFIG_PM
	323	.suspend = pciehp_suspend,
	324	.resume = pciehp_resume,
	325	#endif /* PM */
	326	};
	327
	328	static int __init pcied_init(void)
	329	{
	330	int retval = 0;
	331
a8a2be94	332	retval = pcie_port_service_register(&hpdriver_portdrv);
f7625980 BH	333	dbg("pcie_port_service_register = %d\n", retval);
f7625980 BH	334	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
c2be6f93	335	if (retval)
18b341b7	336	dbg("Failure to register service\n");
c2be6f93	337
1da177e4 LT	338	return retval;
	339	}
	340
	341	static void __exit pcied_cleanup(void)
	342	{
	343	dbg("unload_pciehpd()\n");
027e8d52	344	pcie_port_service_unregister(&hpdriver_portdrv);
1da177e4 LT	345	info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
	346	}
	347
	348	module_init(pcied_init);
	349	module_exit(pcied_cleanup);