[deliverable/linux.git] / drivers / pci / hotplug / acpiphp_core.c

/*
 * ACPI PCI 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) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
 * Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
 * Copyright (C) 2002,2003 NEC Corporation
 * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
 * Copyright (C) 2003-2005 Hewlett Packard
 *
 * 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 <kristen.c.accardi@intel.com>
 *
 */

#define pr_fmt(fmt) "acpiphp: " fmt

#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pci-acpi.h>
#include <linux/pci_hotplug.h>
#include <linux/slab.h>
#include <linux/smp.h>
#include "acpiphp.h"

/* name size which is used for entries in pcihpfs */
#define SLOT_NAME_SIZE  21              /* {_SUN} */

bool acpiphp_disabled;

/* local variables */
static struct acpiphp_attention_info *attention_info;

#define DRIVER_VERSION	"0.5"
#define DRIVER_AUTHOR	"Greg Kroah-Hartman <gregkh@us.ibm.com>, Takayoshi Kochi <t-kochi@bq.jp.nec.com>, Matthew Wilcox <willy@hp.com>"
#define DRIVER_DESC	"ACPI Hot Plug PCI Controller Driver"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_PARM_DESC(disable, "disable acpiphp driver");
module_param_named(disable, acpiphp_disabled, bool, 0444);

static int enable_slot		(struct hotplug_slot *slot);
static int disable_slot		(struct hotplug_slot *slot);
static int set_attention_status (struct hotplug_slot *slot, u8 value);
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 struct hotplug_slot_ops acpi_hotplug_slot_ops = {
	.enable_slot		= enable_slot,
	.disable_slot		= disable_slot,
	.set_attention_status	= set_attention_status,
	.get_power_status	= get_power_status,
	.get_attention_status	= get_attention_status,
	.get_latch_status	= get_latch_status,
	.get_adapter_status	= get_adapter_status,
};

/**
 * acpiphp_register_attention - set attention LED callback
 * @info: must be completely filled with LED callbacks
 *
 * Description: This is used to register a hardware specific ACPI
 * driver that manipulates the attention LED.  All the fields in
 * info must be set.
 */
int acpiphp_register_attention(struct acpiphp_attention_info *info)
{
	int retval = -EINVAL;

	if (info && info->owner && info->set_attn &&
			info->get_attn && !attention_info) {
		retval = 0;
		attention_info = info;
	}
	return retval;
}
EXPORT_SYMBOL_GPL(acpiphp_register_attention);


/**
 * acpiphp_unregister_attention - unset attention LED callback
 * @info: must match the pointer used to register
 *
 * Description: This is used to un-register a hardware specific acpi
 * driver that manipulates the attention LED.  The pointer to the
 * info struct must be the same as the one used to set it.
 */
int acpiphp_unregister_attention(struct acpiphp_attention_info *info)
{
	int retval = -EINVAL;

	if (info && attention_info == info) {
		attention_info = NULL;
		retval = 0;
	}
	return retval;
}
EXPORT_SYMBOL_GPL(acpiphp_unregister_attention);


/**
 * enable_slot - power on and enable a slot
 * @hotplug_slot: slot to enable
 *
 * Actual tasks are done in acpiphp_enable_slot()
 */
static int enable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = hotplug_slot->private;

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	/* enable the specified slot */
	return acpiphp_enable_slot(slot->acpi_slot);
}


/**
 * disable_slot - disable and power off a slot
 * @hotplug_slot: slot to disable
 *
 * Actual tasks are done in acpiphp_disable_slot()
 */
static int disable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = hotplug_slot->private;

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	/* disable the specified slot */
	return acpiphp_disable_slot(slot->acpi_slot);
}


/**
 * set_attention_status - set attention LED
 * @hotplug_slot: slot to set attention LED on
 * @status: value to set attention LED to (0 or 1)
 *
 * attention status LED, so we use a callback that
 * was registered with us.  This allows hardware specific
 * ACPI implementations to blink the light for us.
 */
static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
{
	int retval = -ENODEV;

	pr_debug("%s - physical_slot = %s\n", __func__,
		hotplug_slot_name(hotplug_slot));

	if (attention_info && try_module_get(attention_info->owner)) {
		retval = attention_info->set_attn(hotplug_slot, status);
		module_put(attention_info->owner);
	} else
		attention_info = NULL;
	return retval;
}


/**
 * get_power_status - get power status of a slot
 * @hotplug_slot: slot to get status
 * @value: pointer to store status
 *
 * Some platforms may not implement _STA method properly.
 * In that case, the value returned may not be reliable.
 */
static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	*value = acpiphp_get_power_status(slot->acpi_slot);

	return 0;
}


/**
 * get_attention_status - get attention LED status
 * @hotplug_slot: slot to get status from
 * @value: returns with value of attention LED
 *
 * ACPI doesn't have known method to determine the state
 * of the attention status LED, so we use a callback that
 * was registered with us.  This allows hardware specific
 * ACPI implementations to determine its state.
 */
static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	int retval = -EINVAL;

	pr_debug("%s - physical_slot = %s\n", __func__,
		hotplug_slot_name(hotplug_slot));

	if (attention_info && try_module_get(attention_info->owner)) {
		retval = attention_info->get_attn(hotplug_slot, value);
		module_put(attention_info->owner);
	} else
		attention_info = NULL;
	return retval;
}


/**
 * get_latch_status - get latch status of a slot
 * @hotplug_slot: slot to get status
 * @value: pointer to store status
 *
 * ACPI doesn't provide any formal means to access latch status.
 * Instead, we fake latch status from _STA.
 */
static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	*value = acpiphp_get_latch_status(slot->acpi_slot);

	return 0;
}


/**
 * get_adapter_status - get adapter status of a slot
 * @hotplug_slot: slot to get status
 * @value: pointer to store status
 *
 * ACPI doesn't provide any formal means to access adapter status.
 * Instead, we fake adapter status from _STA.
 */
static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = hotplug_slot->private;

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	*value = acpiphp_get_adapter_status(slot->acpi_slot);

	return 0;
}

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

	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));

	kfree(slot->hotplug_slot);
	kfree(slot);
}

/* callback routine to initialize 'struct slot' for each slot */
int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot,
				  unsigned int sun)
{
	struct slot *slot;
	int retval = -ENOMEM;
	char name[SLOT_NAME_SIZE];

	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
	if (!slot)
		goto error;

	slot->hotplug_slot = kzalloc(sizeof(*slot->hotplug_slot), GFP_KERNEL);
	if (!slot->hotplug_slot)
		goto error_slot;

	slot->hotplug_slot->info = &slot->info;

	slot->hotplug_slot->private = slot;
	slot->hotplug_slot->release = &release_slot;
	slot->hotplug_slot->ops = &acpi_hotplug_slot_ops;

	slot->acpi_slot = acpiphp_slot;
	slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot);
	slot->hotplug_slot->info->attention_status = 0;
	slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot);
	slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);

	acpiphp_slot->slot = slot;
	slot->sun = sun;
	snprintf(name, SLOT_NAME_SIZE, "%u", sun);

	retval = pci_hp_register(slot->hotplug_slot, acpiphp_slot->bus,
				 acpiphp_slot->device, name);
	if (retval == -EBUSY)
		goto error_hpslot;
	if (retval) {
		pr_err("pci_hp_register failed with error %d\n", retval);
		goto error_hpslot;
	}

	pr_info("Slot [%s] registered\n", slot_name(slot));

	return 0;
error_hpslot:
	kfree(slot->hotplug_slot);
error_slot:
	kfree(slot);
error:
	return retval;
}


void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
{
	struct slot *slot = acpiphp_slot->slot;
	int retval = 0;

	pr_info("Slot [%s] unregistered\n", slot_name(slot));

	retval = pci_hp_deregister(slot->hotplug_slot);
	if (retval)
		pr_err("pci_hp_deregister failed with error %d\n", retval);
}


void __init acpiphp_init(void)
{
	pr_info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n",
		acpiphp_disabled ? ", disabled by user; please report a bug"
				 : "");
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ACPI PCI 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) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
	8	* Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
	9	* Copyright (C) 2002,2003 NEC Corporation
42f49a6a RS	10	* Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
42f49a6a RS	11	* Copyright (C) 2003-2005 Hewlett Packard
1da177e4 LT	12	*
	13	* All rights reserved.
	14	*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2 of the License, or (at
	18	* your option) any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful, but
	21	* WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	23	* NON INFRINGEMENT. See the GNU General Public License for more
	24	* details.
	25	*
	26	* You should have received a copy of the GNU General Public License
	27	* along with this program; if not, write to the Free Software
	28	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	29	*
998be20f	30	* Send feedback to <kristen.c.accardi@intel.com>
1da177e4 LT	31	*
	32	*/
	33
bd950799 LT	34	#define pr_fmt(fmt) "acpiphp: " fmt
bd950799 LT	35
1da177e4 LT	36	#include <linux/init.h>
	37	#include <linux/module.h>
	38	#include <linux/moduleparam.h>
	39
	40	#include <linux/kernel.h>
	41	#include <linux/pci.h>
3b63aaa7	42	#include <linux/pci-acpi.h>
7a54f25c	43	#include <linux/pci_hotplug.h>
1da177e4 LT	44	#include <linux/slab.h>
1da177e4 LT	45	#include <linux/smp.h>
1da177e4 LT	46	#include "acpiphp.h"
1da177e4 LT	47
df77cd10 AC	48	/* name size which is used for entries in pcihpfs */
	49	#define SLOT_NAME_SIZE 21 /* {_SUN} */
	50
6037a803	51	bool acpiphp_disabled;
1da177e4 LT	52
1da177e4 LT	53	/* local variables */
1da177e4 LT	54	static struct acpiphp_attention_info *attention_info;
1da177e4 LT	55
42f49a6a RS	56	#define DRIVER_VERSION "0.5"
42f49a6a RS	57	#define DRIVER_AUTHOR "Greg Kroah-Hartman <gregkh@us.ibm.com>, Takayoshi Kochi <t-kochi@bq.jp.nec.com>, Matthew Wilcox <willy@hp.com>"
1da177e4 LT	58	#define DRIVER_DESC "ACPI Hot Plug PCI Controller Driver"
	59
	60	MODULE_AUTHOR(DRIVER_AUTHOR);
	61	MODULE_DESCRIPTION(DRIVER_DESC);
	62	MODULE_LICENSE("GPL");
6037a803	63	MODULE_PARM_DESC(disable, "disable acpiphp driver");
6037a803	64	module_param_named(disable, acpiphp_disabled, bool, 0444);
1da177e4	65
1da177e4 LT	66	static int enable_slot (struct hotplug_slot *slot);
	67	static int disable_slot (struct hotplug_slot *slot);
	68	static int set_attention_status (struct hotplug_slot *slot, u8 value);
	69	static int get_power_status (struct hotplug_slot slot, u8 value);
	70	static int get_attention_status (struct hotplug_slot slot, u8 value);
1da177e4 LT	71	static int get_latch_status (struct hotplug_slot slot, u8 value);
	72	static int get_adapter_status (struct hotplug_slot slot, u8 value);
	73
	74	static struct hotplug_slot_ops acpi_hotplug_slot_ops = {
1da177e4 LT	75	.enable_slot = enable_slot,
	76	.disable_slot = disable_slot,
	77	.set_attention_status = set_attention_status,
	78	.get_power_status = get_power_status,
	79	.get_attention_status = get_attention_status,
	80	.get_latch_status = get_latch_status,
	81	.get_adapter_status = get_adapter_status,
1da177e4 LT	82	};
1da177e4 LT	83
1da177e4 LT	84	/**
	85	* acpiphp_register_attention - set attention LED callback
	86	* @info: must be completely filled with LED callbacks
	87	*
26e6c66e	88	* Description: This is used to register a hardware specific ACPI
1da177e4 LT	89	* driver that manipulates the attention LED. All the fields in
1da177e4 LT	90	* info must be set.
26e6c66e	91	*/
1da177e4 LT	92	int acpiphp_register_attention(struct acpiphp_attention_info *info)
	93	{
	94	int retval = -EINVAL;
	95
	96	if (info && info->owner && info->set_attn &&
	97	info->get_attn && !attention_info) {
	98	retval = 0;
	99	attention_info = info;
	100	}
	101	return retval;
	102	}
b7fe9434	103	EXPORT_SYMBOL_GPL(acpiphp_register_attention);
1da177e4 LT	104
	105
	106	/**
	107	* acpiphp_unregister_attention - unset attention LED callback
	108	* @info: must match the pointer used to register
	109	*
26e6c66e	110	* Description: This is used to un-register a hardware specific acpi
f7625980	111	* driver that manipulates the attention LED. The pointer to the
1da177e4	112	* info struct must be the same as the one used to set it.
26e6c66e	113	*/
1da177e4 LT	114	int acpiphp_unregister_attention(struct acpiphp_attention_info *info)
	115	{
	116	int retval = -EINVAL;
	117
	118	if (info && attention_info == info) {
	119	attention_info = NULL;
	120	retval = 0;
	121	}
	122	return retval;
	123	}
b7fe9434	124	EXPORT_SYMBOL_GPL(acpiphp_unregister_attention);
1da177e4 LT	125
	126
	127	/**
	128	* enable_slot - power on and enable a slot
	129	* @hotplug_slot: slot to enable
	130	*
	131	* Actual tasks are done in acpiphp_enable_slot()
1da177e4 LT	132	*/
	133	static int enable_slot(struct hotplug_slot *hotplug_slot)
	134	{
	135	struct slot *slot = hotplug_slot->private;
	136
bd950799	137	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4 LT	138
	139	/* enable the specified slot */
	140	return acpiphp_enable_slot(slot->acpi_slot);
	141	}
	142
	143
	144	/**
	145	* disable_slot - disable and power off a slot
	146	* @hotplug_slot: slot to disable
	147	*
	148	* Actual tasks are done in acpiphp_disable_slot()
1da177e4 LT	149	*/
	150	static int disable_slot(struct hotplug_slot *hotplug_slot)
	151	{
	152	struct slot *slot = hotplug_slot->private;
	153
bd950799	154	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4 LT	155
1da177e4 LT	156	/* disable the specified slot */
9217a984	157	return acpiphp_disable_slot(slot->acpi_slot);
1da177e4 LT	158	}
	159
	160
26e6c66e RD	161	/**
26e6c66e RD	162	* set_attention_status - set attention LED
1da177e4 LT	163	* @hotplug_slot: slot to set attention LED on
	164	* @status: value to set attention LED to (0 or 1)
	165	*
	166	* attention status LED, so we use a callback that
	167	* was registered with us. This allows hardware specific
	168	* ACPI implementations to blink the light for us.
26e6c66e	169	*/
f7625980 BH	170	static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
f7625980 BH	171	{
1da177e4 LT	172	int retval = -ENODEV;
1da177e4 LT	173
bd950799 LT	174	pr_debug("%s - physical_slot = %s\n", __func__,
	175	hotplug_slot_name(hotplug_slot));
	176
1da177e4 LT	177	if (attention_info && try_module_get(attention_info->owner)) {
	178	retval = attention_info->set_attn(hotplug_slot, status);
	179	module_put(attention_info->owner);
	180	} else
	181	attention_info = NULL;
	182	return retval;
f7625980 BH	183	}
f7625980 BH	184
1da177e4 LT	185
	186	/**
	187	* get_power_status - get power status of a slot
	188	* @hotplug_slot: slot to get status
	189	* @value: pointer to store status
	190	*
	191	* Some platforms may not implement _STA method properly.
	192	* In that case, the value returned may not be reliable.
1da177e4 LT	193	*/
	194	static int get_power_status(struct hotplug_slot hotplug_slot, u8 value)
	195	{
	196	struct slot *slot = hotplug_slot->private;
	197
bd950799	198	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4 LT	199
	200	*value = acpiphp_get_power_status(slot->acpi_slot);
	201
	202	return 0;
	203	}
	204
	205
26e6c66e	206	/**
1da177e4 LT	207	* get_attention_status - get attention LED status
	208	* @hotplug_slot: slot to get status from
	209	* @value: returns with value of attention LED
	210	*
	211	* ACPI doesn't have known method to determine the state
	212	* of the attention status LED, so we use a callback that
	213	* was registered with us. This allows hardware specific
26e6c66e RD	214	* ACPI implementations to determine its state.
26e6c66e RD	215	*/
1da177e4 LT	216	static int get_attention_status(struct hotplug_slot hotplug_slot, u8 value)
	217	{
	218	int retval = -EINVAL;
	219
bd950799 LT	220	pr_debug("%s - physical_slot = %s\n", __func__,
bd950799 LT	221	hotplug_slot_name(hotplug_slot));
1da177e4 LT	222
	223	if (attention_info && try_module_get(attention_info->owner)) {
	224	retval = attention_info->get_attn(hotplug_slot, value);
	225	module_put(attention_info->owner);
	226	} else
	227	attention_info = NULL;
	228	return retval;
	229	}
	230
	231
	232	/**
	233	* get_latch_status - get latch status of a slot
	234	* @hotplug_slot: slot to get status
	235	* @value: pointer to store status
	236	*
	237	* ACPI doesn't provide any formal means to access latch status.
26e6c66e	238	* Instead, we fake latch status from _STA.
1da177e4 LT	239	*/
	240	static int get_latch_status(struct hotplug_slot hotplug_slot, u8 value)
	241	{
	242	struct slot *slot = hotplug_slot->private;
	243
bd950799	244	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4 LT	245
	246	*value = acpiphp_get_latch_status(slot->acpi_slot);
	247
	248	return 0;
	249	}
	250
	251
	252	/**
	253	* get_adapter_status - get adapter status of a slot
	254	* @hotplug_slot: slot to get status
	255	* @value: pointer to store status
	256	*
	257	* ACPI doesn't provide any formal means to access adapter status.
26e6c66e	258	* Instead, we fake adapter status from _STA.
1da177e4 LT	259	*/
	260	static int get_adapter_status(struct hotplug_slot hotplug_slot, u8 value)
	261	{
	262	struct slot *slot = hotplug_slot->private;
	263
bd950799	264	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4 LT	265
	266	*value = acpiphp_get_adapter_status(slot->acpi_slot);
	267
	268	return 0;
	269	}
	270
1da177e4 LT	271	/**
	272	* release_slot - free up the memory used by a slot
	273	* @hotplug_slot: slot to free
	274	*/
	275	static void release_slot(struct hotplug_slot *hotplug_slot)
	276	{
	277	struct slot *slot = hotplug_slot->private;
	278
bd950799	279	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
1da177e4	280
1da177e4 LT	281	kfree(slot->hotplug_slot);
	282	kfree(slot);
	283	}
	284
e27da381	285	/* callback routine to initialize 'struct slot' for each slot */
7342798d RW	286	int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot,
7342798d RW	287	unsigned int sun)
1da177e4 LT	288	{
	289	struct slot *slot;
	290	int retval = -ENOMEM;
df77cd10	291	char name[SLOT_NAME_SIZE];
e27da381 MT	292
	293	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
	294	if (!slot)
	295	goto error;
	296
ac9e9891	297	slot->hotplug_slot = kzalloc(sizeof(*slot->hotplug_slot), GFP_KERNEL);
e27da381 MT	298	if (!slot->hotplug_slot)
	299	goto error_slot;
	300
ac9e9891	301	slot->hotplug_slot->info = &slot->info;
e27da381	302
e27da381 MT	303	slot->hotplug_slot->private = slot;
	304	slot->hotplug_slot->release = &release_slot;
	305	slot->hotplug_slot->ops = &acpi_hotplug_slot_ops;
	306
	307	slot->acpi_slot = acpiphp_slot;
	308	slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot);
	309	slot->hotplug_slot->info->attention_status = 0;
	310	slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot);
	311	slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);
e27da381 MT	312
e27da381 MT	313	acpiphp_slot->slot = slot;
7342798d RW	314	slot->sun = sun;
7342798d RW	315	snprintf(name, SLOT_NAME_SIZE, "%u", sun);
e27da381	316
bda46dbb RW	317	retval = pci_hp_register(slot->hotplug_slot, acpiphp_slot->bus,
bda46dbb RW	318	acpiphp_slot->device, name);
f46753c5 AC	319	if (retval == -EBUSY)
f46753c5 AC	320	goto error_hpslot;
e27da381	321	if (retval) {
bd950799	322	pr_err("pci_hp_register failed with error %d\n", retval);
ac9e9891	323	goto error_hpslot;
f7625980	324	}
e27da381	325
bd950799	326	pr_info("Slot [%s] registered\n", slot_name(slot));
1da177e4 LT	327
1da177e4 LT	328	return 0;
1da177e4 LT	329	error_hpslot:
	330	kfree(slot->hotplug_slot);
	331	error_slot:
	332	kfree(slot);
	333	error:
	334	return retval;
	335	}
	336
	337
e27da381	338	void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
1da177e4	339	{
e27da381 MT	340	struct slot *slot = acpiphp_slot->slot;
e27da381 MT	341	int retval = 0;
1da177e4	342
bd950799	343	pr_info("Slot [%s] unregistered\n", slot_name(slot));
e27da381 MT	344
	345	retval = pci_hp_deregister(slot->hotplug_slot);
	346	if (retval)
bd950799	347	pr_err("pci_hp_deregister failed with error %d\n", retval);
1da177e4 LT	348	}
	349
	350
3b63aaa7	351	void __init acpiphp_init(void)
1da177e4	352	{
bd950799	353	pr_info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n",
6037a803 JL	354	acpiphp_disabled ? ", disabled by user; please report a bug"
6037a803 JL	355	: "");
1da177e4	356	}