[linux-block.git] / include / linux / pci-acpi.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * File		pci-acpi.h
 *
 * Copyright (C) 2004 Intel
 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
 */

#ifndef _PCI_ACPI_H_
#define _PCI_ACPI_H_

#include <linux/acpi.h>

#ifdef CONFIG_ACPI
extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
{
	return acpi_remove_pm_notifier(dev);
}
extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
					     struct pci_dev *pci_dev);
static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
{
	return acpi_remove_pm_notifier(dev);
}
extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);

struct pci_ecam_ops;
extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
			   const struct pci_ecam_ops **ecam_ops);

static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
{
	struct pci_bus *pbus = pdev->bus;

	/* Find a PCI root bus */
	while (!pci_is_root_bus(pbus))
		pbus = pbus->parent;

	return ACPI_HANDLE(pbus->bridge);
}

static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
{
	struct device *dev;

	if (pci_is_root_bus(pbus))
		dev = pbus->bridge;
	else {
		/* If pbus is a virtual bus, there is no bridge to it */
		if (!pbus->self)
			return NULL;

		dev = &pbus->self->dev;
	}

	return ACPI_HANDLE(dev);
}

struct acpi_pci_root;
struct acpi_pci_root_ops;

struct acpi_pci_root_info {
	struct acpi_pci_root		*root;
	struct acpi_device		*bridge;
	struct acpi_pci_root_ops	*ops;
	struct list_head		resources;
	char				name[16];
};

struct acpi_pci_root_ops {
	struct pci_ops *pci_ops;
	int (*init_info)(struct acpi_pci_root_info *info);
	void (*release_info)(struct acpi_pci_root_info *info);
	int (*prepare_resources)(struct acpi_pci_root_info *info);
};

extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
					    struct acpi_pci_root_ops *ops,
					    struct acpi_pci_root_info *info,
					    void *sd);

void acpi_pci_add_bus(struct pci_bus *bus);
void acpi_pci_remove_bus(struct pci_bus *bus);

#ifdef CONFIG_PCI
void pci_acpi_setup(struct device *dev, struct acpi_device *adev);
void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev);
#else
static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {}
static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {}
#endif

#ifdef	CONFIG_ACPI_PCI_SLOT
void acpi_pci_slot_init(void);
void acpi_pci_slot_enumerate(struct pci_bus *bus);
void acpi_pci_slot_remove(struct pci_bus *bus);
#else
static inline void acpi_pci_slot_init(void) { }
static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
#endif

#ifdef	CONFIG_HOTPLUG_PCI_ACPI
void acpiphp_init(void);
void acpiphp_enumerate_slots(struct pci_bus *bus);
void acpiphp_remove_slots(struct pci_bus *bus);
void acpiphp_check_host_bridge(struct acpi_device *adev);
#else
static inline void acpiphp_init(void) { }
static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
#endif

extern const guid_t pci_acpi_dsm_guid;

/* _DSM Definitions for PCI */
#define DSM_PCI_PRESERVE_BOOT_CONFIG		0x05
#define DSM_PCI_DEVICE_NAME			0x07
#define DSM_PCI_POWER_ON_RESET_DELAY		0x08
#define DSM_PCI_DEVICE_READINESS_DURATIONS	0x09

#ifdef CONFIG_PCIE_EDR
void pci_acpi_add_edr_notifier(struct pci_dev *pdev);
void pci_acpi_remove_edr_notifier(struct pci_dev *pdev);
#else
static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { }
static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { }
#endif /* CONFIG_PCIE_EDR */

int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *));
void pci_acpi_clear_companion_lookup_hook(void);

#else	/* CONFIG_ACPI */
static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
#endif	/* CONFIG_ACPI */

#endif	/* _PCI_ACPI_H_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* File pci-acpi.h
	4	*
	5	* Copyright (C) 2004 Intel
	6	* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
	7	*/
	8
	9	#ifndef _PCI_ACPI_H_
	10	#define _PCI_ACPI_H_
	11
8b62091e AP	12	#include <linux/acpi.h>
8b62091e AP	13
1da177e4	14	#ifdef CONFIG_ACPI
c072530f RW	15	extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
	16	static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
	17	{
	18	return acpi_remove_pm_notifier(dev);
	19	}
b67ea761 RW	20	extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
b67ea761 RW	21	struct pci_dev *pci_dev);
c072530f RW	22	static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
	23	{
	24	return acpi_remove_pm_notifier(dev);
	25	}
f4b57a3b	26	extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
b67ea761	27
13983eb8 TN	28	struct pci_ecam_ops;
13983eb8 TN	29	extern int pci_mcfg_lookup(struct acpi_pci_root root, struct resource cfgres,
0b104773	30	const struct pci_ecam_ops **ecam_ops);
935c760e	31
056c58e8 JS	32	static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
056c58e8 JS	33	{
d18690af	34	struct pci_bus *pbus = pdev->bus;
059e4ba2	35
d18690af	36	/* Find a PCI root bus */
a222b8f8	37	while (!pci_is_root_bus(pbus))
d18690af	38	pbus = pbus->parent;
059e4ba2	39
3a83f992	40	return ACPI_HANDLE(pbus->bridge);
056c58e8	41	}
e8c331e9 KK	42
	43	static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
	44	{
059e4ba2 YL	45	struct device *dev;
	46
	47	if (pci_is_root_bus(pbus))
	48	dev = pbus->bridge;
32f638fc YL	49	else {
	50	/* If pbus is a virtual bus, there is no bridge to it */
	51	if (!pbus->self)
	52	return NULL;
	53
059e4ba2	54	dev = &pbus->self->dev;
32f638fc	55	}
059e4ba2	56
3a83f992	57	return ACPI_HANDLE(dev);
e8c331e9	58	}
5090d4a6	59
2c204383 JL	60	struct acpi_pci_root;
	61	struct acpi_pci_root_ops;
	62
	63	struct acpi_pci_root_info {
	64	struct acpi_pci_root *root;
	65	struct acpi_device *bridge;
	66	struct acpi_pci_root_ops *ops;
	67	struct list_head resources;
	68	char name[16];
	69	};
	70
	71	struct acpi_pci_root_ops {
	72	struct pci_ops *pci_ops;
	73	int (init_info)(struct acpi_pci_root_info info);
	74	void (release_info)(struct acpi_pci_root_info info);
	75	int (prepare_resources)(struct acpi_pci_root_info info);
	76	};
	77
	78	extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
	79	extern struct pci_bus acpi_pci_root_create(struct acpi_pci_root root,
	80	struct acpi_pci_root_ops *ops,
	81	struct acpi_pci_root_info *info,
	82	void *sd);
	83
5090d4a6 JL	84	void acpi_pci_add_bus(struct pci_bus *bus);
5090d4a6 JL	85	void acpi_pci_remove_bus(struct pci_bus *bus);
5c0b04e3	86
47954481 RW	87	#ifdef CONFIG_PCI
	88	void pci_acpi_setup(struct device dev, struct acpi_device adev);
	89	void pci_acpi_cleanup(struct device dev, struct acpi_device adev);
	90	#else
	91	static inline void pci_acpi_setup(struct device dev, struct acpi_device adev) {}
	92	static inline void pci_acpi_cleanup(struct device dev, struct acpi_device adev) {}
	93	#endif
	94
5c0b04e3 JL	95	#ifdef CONFIG_ACPI_PCI_SLOT
5c0b04e3 JL	96	void acpi_pci_slot_init(void);
be1c9de9	97	void acpi_pci_slot_enumerate(struct pci_bus *bus);
5c0b04e3 JL	98	void acpi_pci_slot_remove(struct pci_bus *bus);
	99	#else
	100	static inline void acpi_pci_slot_init(void) { }
be1c9de9	101	static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
5c0b04e3 JL	102	static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
	103	#endif
	104
3b63aaa7 JL	105	#ifdef CONFIG_HOTPLUG_PCI_ACPI
3b63aaa7 JL	106	void acpiphp_init(void);
be1c9de9	107	void acpiphp_enumerate_slots(struct pci_bus *bus);
3b63aaa7	108	void acpiphp_remove_slots(struct pci_bus *bus);
1f7c164b	109	void acpiphp_check_host_bridge(struct acpi_device *adev);
3b63aaa7 JL	110	#else
3b63aaa7 JL	111	static inline void acpiphp_init(void) { }
be1c9de9	112	static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
3b63aaa7	113	static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
1f7c164b	114	static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
3b63aaa7 JL	115	#endif
3b63aaa7 JL	116
94116f81	117	extern const guid_t pci_acpi_dsm_guid;
3910ebac KW	118
	119	/* _DSM Definitions for PCI */
	120	#define DSM_PCI_PRESERVE_BOOT_CONFIG 0x05
	121	#define DSM_PCI_DEVICE_NAME 0x07
	122	#define DSM_PCI_POWER_ON_RESET_DELAY 0x08
	123	#define DSM_PCI_DEVICE_READINESS_DURATIONS 0x09
18e94a33	124
ac1c8e35 KS	125	#ifdef CONFIG_PCIE_EDR
	126	void pci_acpi_add_edr_notifier(struct pci_dev *pdev);
	127	void pci_acpi_remove_edr_notifier(struct pci_dev *pdev);
	128	#else
	129	static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { }
	130	static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { }
	131	#endif /* CONFIG_PCIE_EDR */
	132
59dc3325 RW	133	int pci_acpi_set_companion_lookup_hook(struct acpi_device (func)(struct pci_dev *));
	134	void pci_acpi_clear_companion_lookup_hook(void);
	135
5090d4a6 JL	136	#else /* CONFIG_ACPI */
	137	static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
	138	static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
	139	#endif /* CONFIG_ACPI */
1da177e4 LT	140
1da177e4 LT	141	#endif /* _PCI_ACPI_H_ */