[mirror_ubuntu-jammy-kernel.git] / drivers / pci / hotplug / shpchp_core.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Standard 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.
 *
 * 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/types.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include "shpchp.h"

/* Global variables */
bool shpchp_debug;
bool shpchp_poll_mode;
int shpchp_poll_time;

#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	"Standard Hot Plug PCI Controller Driver"

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

module_param(shpchp_debug, bool, 0644);
module_param(shpchp_poll_mode, bool, 0644);
module_param(shpchp_poll_time, int, 0644);
MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");

#define SHPC_MODULE_NAME "shpchp"

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 const struct hotplug_slot_ops shpchp_hotplug_slot_ops = {
	.set_attention_status =	set_attention_status,
	.enable_slot =		enable_slot,
	.disable_slot =		disable_slot,
	.get_power_status =	get_power_status,
	.get_attention_status =	get_attention_status,
	.get_latch_status =	get_latch_status,
	.get_adapter_status =	get_adapter_status,
};

static int init_slots(struct controller *ctrl)
{
	struct slot *slot;
	struct hotplug_slot *hotplug_slot;
	char name[SLOT_NAME_SIZE];
	int retval;
	int i;

	for (i = 0; i < ctrl->num_slots; i++) {
		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
		if (!slot) {
			retval = -ENOMEM;
			goto error;
		}

		hotplug_slot = &slot->hotplug_slot;

		slot->hp_slot = i;
		slot->ctrl = ctrl;
		slot->bus = ctrl->pci_dev->subordinate->number;
		slot->device = ctrl->slot_device_offset + i;
		slot->hpc_ops = ctrl->hpc_ops;
		slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i);

		slot->wq = alloc_workqueue("shpchp-%d", 0, 0, slot->number);
		if (!slot->wq) {
			retval = -ENOMEM;
			goto error_slot;
		}

		mutex_init(&slot->lock);
		INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work);

		/* register this slot with the hotplug pci core */
		snprintf(name, SLOT_NAME_SIZE, "%d", slot->number);
		hotplug_slot->ops = &shpchp_hotplug_slot_ops;

		ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x hp_slot=%x sun=%x slot_device_offset=%x\n",
			 pci_domain_nr(ctrl->pci_dev->subordinate),
			 slot->bus, slot->device, slot->hp_slot, slot->number,
			 ctrl->slot_device_offset);
		retval = pci_hp_register(hotplug_slot,
				ctrl->pci_dev->subordinate, slot->device, name);
		if (retval) {
			ctrl_err(ctrl, "pci_hp_register failed with error %d\n",
				 retval);
			goto error_slotwq;
		}

		get_power_status(hotplug_slot, &slot->pwr_save);
		get_attention_status(hotplug_slot, &slot->attention_save);
		get_latch_status(hotplug_slot, &slot->latch_save);
		get_adapter_status(hotplug_slot, &slot->presence_save);

		list_add(&slot->slot_list, &ctrl->slot_list);
	}

	return 0;
error_slotwq:
	destroy_workqueue(slot->wq);
error_slot:
	kfree(slot);
error:
	return retval;
}

void cleanup_slots(struct controller *ctrl)
{
	struct slot *slot, *next;

	list_for_each_entry_safe(slot, next, &ctrl->slot_list, slot_list) {
		list_del(&slot->slot_list);
		cancel_delayed_work(&slot->work);
		destroy_workqueue(slot->wq);
		pci_hp_deregister(&slot->hotplug_slot);
		kfree(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 = get_slot(hotplug_slot);

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	slot->attention_save = status;
	slot->hpc_ops->set_attention_status(slot, status);

	return 0;
}

static int enable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = get_slot(hotplug_slot);

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	return shpchp_sysfs_enable_slot(slot);
}

static int disable_slot(struct hotplug_slot *hotplug_slot)
{
	struct slot *slot = get_slot(hotplug_slot);

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	return shpchp_sysfs_disable_slot(slot);
}

static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = get_slot(hotplug_slot);
	int retval;

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	retval = slot->hpc_ops->get_power_status(slot, value);
	if (retval < 0)
		*value = slot->pwr_save;

	return 0;
}

static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = get_slot(hotplug_slot);
	int retval;

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	retval = slot->hpc_ops->get_attention_status(slot, value);
	if (retval < 0)
		*value = slot->attention_save;

	return 0;
}

static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = get_slot(hotplug_slot);
	int retval;

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	retval = slot->hpc_ops->get_latch_status(slot, value);
	if (retval < 0)
		*value = slot->latch_save;

	return 0;
}

static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
	struct slot *slot = get_slot(hotplug_slot);
	int retval;

	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
		 __func__, slot_name(slot));

	retval = slot->hpc_ops->get_adapter_status(slot, value);
	if (retval < 0)
		*value = slot->presence_save;

	return 0;
}

static bool shpc_capable(struct pci_dev *bridge)
{
	/*
	 * It is assumed that AMD GOLAM chips support SHPC but they do not
	 * have SHPC capability.
	 */
	if (bridge->vendor == PCI_VENDOR_ID_AMD &&
	    bridge->device == PCI_DEVICE_ID_AMD_GOLAM_7450)
		return true;

	if (pci_find_capability(bridge, PCI_CAP_ID_SHPC))
		return true;

	return false;
}

static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	int rc;
	struct controller *ctrl;

	if (!shpc_capable(pdev))
		return -ENODEV;

	if (acpi_get_hp_hw_control_from_firmware(pdev))
		return -ENODEV;

	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
	if (!ctrl)
		goto err_out_none;

	INIT_LIST_HEAD(&ctrl->slot_list);

	rc = shpc_init(ctrl, pdev);
	if (rc) {
		ctrl_dbg(ctrl, "Controller initialization failed\n");
		goto err_out_free_ctrl;
	}

	pci_set_drvdata(pdev, ctrl);

	/* Setup the slot information structures */
	rc = init_slots(ctrl);
	if (rc) {
		ctrl_err(ctrl, "Slot initialization failed\n");
		goto err_out_release_ctlr;
	}

	rc = shpchp_create_ctrl_files(ctrl);
	if (rc)
		goto err_cleanup_slots;

	pdev->shpc_managed = 1;
	return 0;

err_cleanup_slots:
	cleanup_slots(ctrl);
err_out_release_ctlr:
	ctrl->hpc_ops->release_ctlr(ctrl);
err_out_free_ctrl:
	kfree(ctrl);
err_out_none:
	return -ENODEV;
}

static void shpc_remove(struct pci_dev *dev)
{
	struct controller *ctrl = pci_get_drvdata(dev);

	dev->shpc_managed = 0;
	shpchp_remove_ctrl_files(ctrl);
	ctrl->hpc_ops->release_ctlr(ctrl);
	kfree(ctrl);
}

static const struct pci_device_id shpcd_pci_tbl[] = {
	{PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)},
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);

static struct pci_driver shpc_driver = {
	.name =		SHPC_MODULE_NAME,
	.id_table =	shpcd_pci_tbl,
	.probe =	shpc_probe,
	.remove =	shpc_remove,
};

static int __init shpcd_init(void)
{
	int retval;

	retval = pci_register_driver(&shpc_driver);
	dbg("%s: pci_register_driver = %d\n", __func__, retval);
	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");

	return retval;
}

static void __exit shpcd_cleanup(void)
{
	dbg("unload_shpchpd()\n");
	pci_unregister_driver(&shpc_driver);
	info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}

module_init(shpcd_init);
module_exit(shpcd_cleanup);
Commit	Line	Data
736759ef	1	// SPDX-License-Identifier: GPL-2.0+
1da177e4 LT	2	/*
	3	* Standard Hot Plug Controller Driver
	4	*
	5	* Copyright (C) 1995,2001 Compaq Computer Corporation
	6	* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
	7	* Copyright (C) 2001 IBM Corp.
	8	* Copyright (C) 2003-2004 Intel Corporation
	9	*
	10	* All rights reserved.
	11	*
8cf4c195	12	* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
1da177e4 LT	13	*
	14	*/
	15
1da177e4 LT	16	#include <linux/module.h>
	17	#include <linux/moduleparam.h>
	18	#include <linux/kernel.h>
	19	#include <linux/types.h>
5a0e3ad6	20	#include <linux/slab.h>
1da177e4	21	#include <linux/pci.h>
1da177e4	22	#include "shpchp.h"
1da177e4 LT	23
1da177e4 LT	24	/* Global variables */
90ab5ee9 RR	25	bool shpchp_debug;
90ab5ee9 RR	26	bool shpchp_poll_mode;
1da177e4	27	int shpchp_poll_time;
1da177e4 LT	28
	29	#define DRIVER_VERSION "0.4"
	30	#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
	31	#define DRIVER_DESC "Standard Hot Plug PCI Controller Driver"
	32
	33	MODULE_AUTHOR(DRIVER_AUTHOR);
	34	MODULE_DESCRIPTION(DRIVER_DESC);
	35	MODULE_LICENSE("GPL");
	36
	37	module_param(shpchp_debug, bool, 0644);
	38	module_param(shpchp_poll_mode, bool, 0644);
	39	module_param(shpchp_poll_time, int, 0644);
	40	MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not");
	41	MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not");
	42	MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");
	43
	44	#define SHPC_MODULE_NAME "shpchp"
	45
ff3ce480 BS	46	static int set_attention_status(struct hotplug_slot *slot, u8 value);
	47	static int enable_slot(struct hotplug_slot *slot);
	48	static int disable_slot(struct hotplug_slot *slot);
	49	static int get_power_status(struct hotplug_slot slot, u8 value);
	50	static int get_attention_status(struct hotplug_slot slot, u8 value);
	51	static int get_latch_status(struct hotplug_slot slot, u8 value);
	52	static int get_adapter_status(struct hotplug_slot slot, u8 value);
1da177e4	53
81c4b5bf	54	static const struct hotplug_slot_ops shpchp_hotplug_slot_ops = {
1da177e4 LT	55	.set_attention_status = set_attention_status,
	56	.enable_slot = enable_slot,
	57	.disable_slot = disable_slot,
	58	.get_power_status = get_power_status,
	59	.get_attention_status = get_attention_status,
	60	.get_latch_status = get_latch_status,
	61	.get_adapter_status = get_adapter_status,
1da177e4 LT	62	};
1da177e4 LT	63
1da177e4 LT	64	static int init_slots(struct controller *ctrl)
1da177e4 LT	65	{
926030f6 KK	66	struct slot *slot;
926030f6 KK	67	struct hotplug_slot *hotplug_slot;
66f17055	68	char name[SLOT_NAME_SIZE];
83d05710	69	int retval;
5fe6cc60	70	int i;
926030f6 KK	71
926030f6 KK	72	for (i = 0; i < ctrl->num_slots; i++) {
57c95c0d	73	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
83d05710 JL	74	if (!slot) {
83d05710 JL	75	retval = -ENOMEM;
1da177e4	76	goto error;
83d05710	77	}
1da177e4	78
125450f8	79	hotplug_slot = &slot->hotplug_slot;
1da177e4	80
926030f6	81	slot->hp_slot = i;
926030f6	82	slot->ctrl = ctrl;
227b84c7	83	slot->bus = ctrl->pci_dev->subordinate->number;
926030f6 KK	84	slot->device = ctrl->slot_device_offset + i;
926030f6 KK	85	slot->hpc_ops = ctrl->hpc_ops;
6f39be2e	86	slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i);
f652e7d2	87
d8537548	88	slot->wq = alloc_workqueue("shpchp-%d", 0, 0, slot->number);
f652e7d2 BH	89	if (!slot->wq) {
f652e7d2 BH	90	retval = -ENOMEM;
125450f8	91	goto error_slot;
f652e7d2 BH	92	}
f652e7d2 BH	93
a246fa4e	94	mutex_init(&slot->lock);
e325e1f0	95	INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work);
1da177e4 LT	96
1da177e4 LT	97	/* register this slot with the hotplug pci core */
66f17055	98	snprintf(name, SLOT_NAME_SIZE, "%d", slot->number);
926030f6 KK	99	hotplug_slot->ops = &shpchp_hotplug_slot_ops;
926030f6 KK	100
227f0647	101	ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x hp_slot=%x sun=%x slot_device_offset=%x\n",
f7625980 BH	102	pci_domain_nr(ctrl->pci_dev->subordinate),
	103	slot->bus, slot->device, slot->hp_slot, slot->number,
	104	ctrl->slot_device_offset);
125450f8	105	retval = pci_hp_register(hotplug_slot,
66f17055	106	ctrl->pci_dev->subordinate, slot->device, name);
926030f6	107	if (retval) {
f98ca311 TI	108	ctrl_err(ctrl, "pci_hp_register failed with error %d\n",
f98ca311 TI	109	retval);
f652e7d2	110	goto error_slotwq;
1da177e4 LT	111	}
1da177e4 LT	112
a7da2161 LW	113	get_power_status(hotplug_slot, &slot->pwr_save);
	114	get_attention_status(hotplug_slot, &slot->attention_save);
	115	get_latch_status(hotplug_slot, &slot->latch_save);
	116	get_adapter_status(hotplug_slot, &slot->presence_save);
66f17055	117
5b1a960d	118	list_add(&slot->slot_list, &ctrl->slot_list);
1da177e4 LT	119	}
	120
	121	return 0;
f652e7d2 BH	122	error_slotwq:
f652e7d2 BH	123	destroy_workqueue(slot->wq);
1da177e4	124	error_slot:
926030f6	125	kfree(slot);
1da177e4	126	error:
926030f6	127	return retval;
1da177e4 LT	128	}
1da177e4 LT	129
f7391f53	130	void cleanup_slots(struct controller *ctrl)
1da177e4	131	{
2ac83ccc	132	struct slot slot, next;
1da177e4	133
2ac83ccc	134	list_for_each_entry_safe(slot, next, &ctrl->slot_list, slot_list) {
5b1a960d	135	list_del(&slot->slot_list);
f7391f53	136	cancel_delayed_work(&slot->work);
f652e7d2	137	destroy_workqueue(slot->wq);
125450f8	138	pci_hp_deregister(&slot->hotplug_slot);
51bbf9be	139	kfree(slot);
1da177e4 LT	140	}
	141	}
	142
1da177e4 LT	143	/*
	144	* set_attention_status - Turns the Amber LED for a slot on, off or blink
	145	*/
ff3ce480	146	static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
1da177e4	147	{
8352e04e	148	struct slot *slot = get_slot(hotplug_slot);
1da177e4	149
be7bce25	150	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	151	__func__, slot_name(slot));
1da177e4	152
a7da2161	153	slot->attention_save = status;
1da177e4 LT	154	slot->hpc_ops->set_attention_status(slot, status);
	155
	156	return 0;
	157	}
	158
ff3ce480	159	static int enable_slot(struct hotplug_slot *hotplug_slot)
1da177e4	160	{
8352e04e	161	struct slot *slot = get_slot(hotplug_slot);
1da177e4	162
be7bce25	163	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	164	__func__, slot_name(slot));
1da177e4	165
a246fa4e	166	return shpchp_sysfs_enable_slot(slot);
1da177e4 LT	167	}
1da177e4 LT	168
ff3ce480	169	static int disable_slot(struct hotplug_slot *hotplug_slot)
1da177e4	170	{
8352e04e	171	struct slot *slot = get_slot(hotplug_slot);
1da177e4	172
be7bce25	173	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	174	__func__, slot_name(slot));
1da177e4	175
a246fa4e	176	return shpchp_sysfs_disable_slot(slot);
1da177e4 LT	177	}
1da177e4 LT	178
ff3ce480	179	static int get_power_status(struct hotplug_slot hotplug_slot, u8 value)
1da177e4	180	{
8352e04e	181	struct slot *slot = get_slot(hotplug_slot);
1da177e4 LT	182	int retval;
1da177e4 LT	183
be7bce25	184	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	185	__func__, slot_name(slot));
1da177e4 LT	186
	187	retval = slot->hpc_ops->get_power_status(slot, value);
	188	if (retval < 0)
a7da2161	189	*value = slot->pwr_save;
1da177e4 LT	190
	191	return 0;
	192	}
	193
ff3ce480	194	static int get_attention_status(struct hotplug_slot hotplug_slot, u8 value)
1da177e4	195	{
8352e04e	196	struct slot *slot = get_slot(hotplug_slot);
1da177e4 LT	197	int retval;
1da177e4 LT	198
be7bce25	199	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	200	__func__, slot_name(slot));
1da177e4 LT	201
	202	retval = slot->hpc_ops->get_attention_status(slot, value);
	203	if (retval < 0)
a7da2161	204	*value = slot->attention_save;
1da177e4 LT	205
	206	return 0;
	207	}
	208
ff3ce480	209	static int get_latch_status(struct hotplug_slot hotplug_slot, u8 value)
1da177e4	210	{
8352e04e	211	struct slot *slot = get_slot(hotplug_slot);
1da177e4 LT	212	int retval;
1da177e4 LT	213
be7bce25	214	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	215	__func__, slot_name(slot));
1da177e4 LT	216
	217	retval = slot->hpc_ops->get_latch_status(slot, value);
	218	if (retval < 0)
a7da2161	219	*value = slot->latch_save;
1da177e4 LT	220
	221	return 0;
	222	}
	223
ff3ce480	224	static int get_adapter_status(struct hotplug_slot hotplug_slot, u8 value)
1da177e4	225	{
8352e04e	226	struct slot *slot = get_slot(hotplug_slot);
1da177e4 LT	227	int retval;
1da177e4 LT	228
be7bce25	229	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
f98ca311	230	__func__, slot_name(slot));
1da177e4 LT	231
	232	retval = slot->hpc_ops->get_adapter_status(slot, value);
	233	if (retval < 0)
a7da2161	234	*value = slot->presence_save;
1da177e4 LT	235
	236	return 0;
	237	}
	238
b03799b0 BH	239	static bool shpc_capable(struct pci_dev *bridge)
	240	{
	241	/*
	242	* It is assumed that AMD GOLAM chips support SHPC but they do not
	243	* have SHPC capability.
	244	*/
	245	if (bridge->vendor == PCI_VENDOR_ID_AMD &&
	246	bridge->device == PCI_DEVICE_ID_AMD_GOLAM_7450)
	247	return true;
	248
	249	if (pci_find_capability(bridge, PCI_CAP_ID_SHPC))
	250	return true;
	251
	252	return false;
	253	}
	254
1da177e4 LT	255	static int shpc_probe(struct pci_dev pdev, const struct pci_device_id ent)
	256	{
	257	int rc;
	258	struct controller *ctrl;
1da177e4	259
b03799b0 BH	260	if (!shpc_capable(pdev))
	261	return -ENODEV;
	262
90cc0c3c	263	if (acpi_get_hp_hw_control_from_firmware(pdev))
1410dc1c RS	264	return -ENODEV;
1410dc1c RS	265
57c95c0d	266	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
c7abb235	267	if (!ctrl)
1da177e4	268	goto err_out_none;
c7abb235	269
5b1a960d	270	INIT_LIST_HEAD(&ctrl->slot_list);
1da177e4	271
ee138334	272	rc = shpc_init(ctrl, pdev);
1da177e4	273	if (rc) {
be7bce25	274	ctrl_dbg(ctrl, "Controller initialization failed\n");
1da177e4 LT	275	goto err_out_free_ctrl;
	276	}
	277
1da177e4 LT	278	pci_set_drvdata(pdev, ctrl);
1da177e4 LT	279
1da177e4 LT	280	/* Setup the slot information structures */
	281	rc = init_slots(ctrl);
	282	if (rc) {
be7bce25	283	ctrl_err(ctrl, "Slot initialization failed\n");
f7391f53	284	goto err_out_release_ctlr;
1da177e4 LT	285	}
1da177e4 LT	286
e1b95dc6 GKH	287	rc = shpchp_create_ctrl_files(ctrl);
	288	if (rc)
	289	goto err_cleanup_slots;
1da177e4	290
b03799b0	291	pdev->shpc_managed = 1;
1da177e4 LT	292	return 0;
1da177e4 LT	293
e1b95dc6 GKH	294	err_cleanup_slots:
e1b95dc6 GKH	295	cleanup_slots(ctrl);
f7391f53	296	err_out_release_ctlr:
1da177e4 LT	297	ctrl->hpc_ops->release_ctlr(ctrl);
	298	err_out_free_ctrl:
	299	kfree(ctrl);
	300	err_out_none:
	301	return -ENODEV;
	302	}
	303
e6b82b13	304	static void shpc_remove(struct pci_dev *dev)
1da177e4	305	{
e6b82b13	306	struct controller *ctrl = pci_get_drvdata(dev);
1da177e4	307
b03799b0	308	dev->shpc_managed = 0;
e6b82b13 KK	309	shpchp_remove_ctrl_files(ctrl);
	310	ctrl->hpc_ops->release_ctlr(ctrl);
	311	kfree(ctrl);
1da177e4 LT	312	}
1da177e4 LT	313
8394264d	314	static const struct pci_device_id shpcd_pci_tbl[] = {
dfcd5f68	315	{PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) \| 0x00), ~0)},
1da177e4 LT	316	{ /* end: all zeroes */ }
1da177e4 LT	317	};
1da177e4 LT	318	MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
1da177e4 LT	319
1da177e4 LT	320	static struct pci_driver shpc_driver = {
	321	.name = SHPC_MODULE_NAME,
	322	.id_table = shpcd_pci_tbl,
	323	.probe = shpc_probe,
e6b82b13	324	.remove = shpc_remove,
1da177e4 LT	325	};
1da177e4 LT	326
1da177e4 LT	327	static int __init shpcd_init(void)
1da177e4 LT	328	{
f652e7d2	329	int retval;
e24dcbef	330
424600f9	331	retval = pci_register_driver(&shpc_driver);
66bef8c0	332	dbg("%s: pci_register_driver = %d\n", __func__, retval);
424600f9	333	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
f652e7d2	334
1da177e4 LT	335	return retval;
	336	}
	337
	338	static void __exit shpcd_cleanup(void)
	339	{
	340	dbg("unload_shpchpd()\n");
1da177e4	341	pci_unregister_driver(&shpc_driver);
1da177e4 LT	342	info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
	343	}
	344
	345	module_init(shpcd_init);
	346	module_exit(shpcd_cleanup);