[mirror_ubuntu-bionic-kernel.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,
			   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_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;
#define DEVICE_LABEL_DSM	0x07
#define RESET_DELAY_DSM		0x08
#define FUNCTION_DELAY_DSM	0x09

#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 */

#ifdef CONFIG_ACPI_APEI
extern bool aer_acpi_firmware_first(void);
#else
static inline bool aer_acpi_firmware_first(void) { return false; }
#endif

#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;
	29	extern int pci_mcfg_lookup(struct acpi_pci_root root, struct resource cfgres,
	30	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 JL	86
	87	#ifdef CONFIG_ACPI_PCI_SLOT
	88	void acpi_pci_slot_init(void);
be1c9de9	89	void acpi_pci_slot_enumerate(struct pci_bus *bus);
5c0b04e3 JL	90	void acpi_pci_slot_remove(struct pci_bus *bus);
	91	#else
	92	static inline void acpi_pci_slot_init(void) { }
be1c9de9	93	static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
5c0b04e3 JL	94	static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
	95	#endif
	96
3b63aaa7 JL	97	#ifdef CONFIG_HOTPLUG_PCI_ACPI
3b63aaa7 JL	98	void acpiphp_init(void);
be1c9de9	99	void acpiphp_enumerate_slots(struct pci_bus *bus);
3b63aaa7	100	void acpiphp_remove_slots(struct pci_bus *bus);
1f7c164b	101	void acpiphp_check_host_bridge(struct acpi_device *adev);
3b63aaa7 JL	102	#else
3b63aaa7 JL	103	static inline void acpiphp_init(void) { }
be1c9de9	104	static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
3b63aaa7	105	static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
1f7c164b	106	static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
3b63aaa7 JL	107	#endif
3b63aaa7 JL	108
94116f81	109	extern const guid_t pci_acpi_dsm_guid;
18e94a33	110	#define DEVICE_LABEL_DSM 0x07
e33caa82 AL	111	#define RESET_DELAY_DSM 0x08
e33caa82 AL	112	#define FUNCTION_DELAY_DSM 0x09
18e94a33	113
5090d4a6 JL	114	#else /* CONFIG_ACPI */
	115	static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
	116	static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
	117	#endif /* CONFIG_ACPI */
1da177e4	118
415e12b2 RW	119	#ifdef CONFIG_ACPI_APEI
	120	extern bool aer_acpi_firmware_first(void);
	121	#else
	122	static inline bool aer_acpi_firmware_first(void) { return false; }
	123	#endif
	124
1da177e4	125	#endif /* _PCI_ACPI_H_ */