[mirror_ubuntu-bionic-kernel.git] / drivers / pci / pci.h

#ifndef DRIVERS_PCI_H
#define DRIVERS_PCI_H

#define PCI_FIND_CAP_TTL	48

extern const unsigned char pcie_link_speed[];

bool pcie_cap_has_lnkctl(const struct pci_dev *dev);

/* Functions internal to the PCI core code */

int pci_create_sysfs_dev_files(struct pci_dev *pdev);
void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
{ return; }
static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
{ return; }
#else
void pci_create_firmware_label_files(struct pci_dev *pdev);
void pci_remove_firmware_label_files(struct pci_dev *pdev);
#endif
void pci_cleanup_rom(struct pci_dev *dev);
#ifdef HAVE_PCI_MMAP
enum pci_mmap_api {
	PCI_MMAP_SYSFS,	/* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
	PCI_MMAP_PROCFS	/* mmap on /proc/bus/pci/<BDF> */
};
int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
		  enum pci_mmap_api mmap_api);
#endif
int pci_probe_reset_function(struct pci_dev *dev);

/**
 * struct pci_platform_pm_ops - Firmware PM callbacks
 *
 * @is_manageable: returns 'true' if given device is power manageable by the
 *                 platform firmware
 *
 * @set_state: invokes the platform firmware to set the device's power state
 *
 * @get_state: queries the platform firmware for a device's current power state
 *
 * @choose_state: returns PCI power state of given device preferred by the
 *                platform; to be used during system-wide transitions from a
 *                sleeping state to the working state and vice versa
 *
 * @sleep_wake: enables/disables the system wake up capability of given device
 *
 * @run_wake: enables/disables the platform to generate run-time wake-up events
 *		for given device (the device's wake-up capability has to be
 *		enabled by @sleep_wake for this feature to work)
 *
 * @need_resume: returns 'true' if the given device (which is currently
 *		suspended) needs to be resumed to be configured for system
 *		wakeup.
 *
 * If given platform is generally capable of power managing PCI devices, all of
 * these callbacks are mandatory.
 */
struct pci_platform_pm_ops {
	bool (*is_manageable)(struct pci_dev *dev);
	int (*set_state)(struct pci_dev *dev, pci_power_t state);
	pci_power_t (*get_state)(struct pci_dev *dev);
	pci_power_t (*choose_state)(struct pci_dev *dev);
	int (*sleep_wake)(struct pci_dev *dev, bool enable);
	int (*run_wake)(struct pci_dev *dev, bool enable);
	bool (*need_resume)(struct pci_dev *dev);
};

int pci_set_platform_pm(const struct pci_platform_pm_ops *ops);
void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
void pci_power_up(struct pci_dev *dev);
void pci_disable_enabled_device(struct pci_dev *dev);
int pci_finish_runtime_suspend(struct pci_dev *dev);
int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
bool pci_dev_keep_suspended(struct pci_dev *dev);
void pci_dev_complete_resume(struct pci_dev *pci_dev);
void pci_config_pm_runtime_get(struct pci_dev *dev);
void pci_config_pm_runtime_put(struct pci_dev *dev);
void pci_pm_init(struct pci_dev *dev);
void pci_ea_init(struct pci_dev *dev);
void pci_allocate_cap_save_buffers(struct pci_dev *dev);
void pci_free_cap_save_buffers(struct pci_dev *dev);
bool pci_bridge_d3_possible(struct pci_dev *dev);
void pci_bridge_d3_update(struct pci_dev *dev);

static inline void pci_wakeup_event(struct pci_dev *dev)
{
	/* Wait 100 ms before the system can be put into a sleep state. */
	pm_wakeup_event(&dev->dev, 100);
}

static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
{
	return !!(pci_dev->subordinate);
}

static inline bool pci_power_manageable(struct pci_dev *pci_dev)
{
	/*
	 * Currently we allow normal PCI devices and PCI bridges transition
	 * into D3 if their bridge_d3 is set.
	 */
	return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
}

struct pci_vpd_ops {
	ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
	ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
	int (*set_size)(struct pci_dev *dev, size_t len);
};

struct pci_vpd {
	const struct pci_vpd_ops *ops;
	struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
	struct mutex	lock;
	unsigned int	len;
	u16		flag;
	u8		cap;
	u8		busy:1;
	u8		valid:1;
};

int pci_vpd_init(struct pci_dev *dev);
void pci_vpd_release(struct pci_dev *dev);

/* PCI /proc functions */
#ifdef CONFIG_PROC_FS
int pci_proc_attach_device(struct pci_dev *dev);
int pci_proc_detach_device(struct pci_dev *dev);
int pci_proc_detach_bus(struct pci_bus *bus);
#else
static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
#endif

/* Functions for PCI Hotplug drivers to use */
int pci_hp_add_bridge(struct pci_dev *dev);

#ifdef HAVE_PCI_LEGACY
void pci_create_legacy_files(struct pci_bus *bus);
void pci_remove_legacy_files(struct pci_bus *bus);
#else
static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
#endif

/* Lock for read/write access to pci device and bus lists */
extern struct rw_semaphore pci_bus_sem;

extern raw_spinlock_t pci_lock;

extern unsigned int pci_pm_d3_delay;

#ifdef CONFIG_PCI_MSI
void pci_no_msi(void);
#else
static inline void pci_no_msi(void) { }
#endif

static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
{
	u16 control;

	pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
	control &= ~PCI_MSI_FLAGS_ENABLE;
	if (enable)
		control |= PCI_MSI_FLAGS_ENABLE;
	pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
}

static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
{
	u16 ctrl;

	pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
	ctrl &= ~clear;
	ctrl |= set;
	pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
}

void pci_realloc_get_opt(char *);

static inline int pci_no_d1d2(struct pci_dev *dev)
{
	unsigned int parent_dstates = 0;

	if (dev->bus->self)
		parent_dstates = dev->bus->self->no_d1d2;
	return (dev->no_d1d2 || parent_dstates);

}
extern const struct attribute_group *pci_dev_groups[];
extern const struct attribute_group *pcibus_groups[];
extern struct device_type pci_dev_type;
extern const struct attribute_group *pci_bus_groups[];


/**
 * pci_match_one_device - Tell if a PCI device structure has a matching
 *                        PCI device id structure
 * @id: single PCI device id structure to match
 * @dev: the PCI device structure to match against
 *
 * Returns the matching pci_device_id structure or %NULL if there is no match.
 */
static inline const struct pci_device_id *
pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
{
	if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
	    (id->device == PCI_ANY_ID || id->device == dev->device) &&
	    (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
	    (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
	    !((id->class ^ dev->class) & id->class_mask))
		return id;
	return NULL;
}

/* PCI slot sysfs helper code */
#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)

extern struct kset *pci_slots_kset;

struct pci_slot_attribute {
	struct attribute attr;
	ssize_t (*show)(struct pci_slot *, char *);
	ssize_t (*store)(struct pci_slot *, const char *, size_t);
};
#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)

enum pci_bar_type {
	pci_bar_unknown,	/* Standard PCI BAR probe */
	pci_bar_io,		/* An io port BAR */
	pci_bar_mem32,		/* A 32-bit memory BAR */
	pci_bar_mem64,		/* A 64-bit memory BAR */
};

bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
				int crs_timeout);
int pci_setup_device(struct pci_dev *dev);
int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
		    struct resource *res, unsigned int reg);
void pci_configure_ari(struct pci_dev *dev);
void __pci_bus_size_bridges(struct pci_bus *bus,
			struct list_head *realloc_head);
void __pci_bus_assign_resources(const struct pci_bus *bus,
				struct list_head *realloc_head,
				struct list_head *fail_head);
bool pci_bus_clip_resource(struct pci_dev *dev, int idx);

void pci_reassigndev_resource_alignment(struct pci_dev *dev);
void pci_disable_bridge_window(struct pci_dev *dev);

/* Single Root I/O Virtualization */
struct pci_sriov {
	int pos;		/* capability position */
	int nres;		/* number of resources */
	u32 cap;		/* SR-IOV Capabilities */
	u16 ctrl;		/* SR-IOV Control */
	u16 total_VFs;		/* total VFs associated with the PF */
	u16 initial_VFs;	/* initial VFs associated with the PF */
	u16 num_VFs;		/* number of VFs available */
	u16 offset;		/* first VF Routing ID offset */
	u16 stride;		/* following VF stride */
	u32 pgsz;		/* page size for BAR alignment */
	u8 link;		/* Function Dependency Link */
	u8 max_VF_buses;	/* max buses consumed by VFs */
	u16 driver_max_VFs;	/* max num VFs driver supports */
	struct pci_dev *dev;	/* lowest numbered PF */
	struct pci_dev *self;	/* this PF */
	struct mutex lock;	/* lock for VF bus */
	resource_size_t barsz[PCI_SRIOV_NUM_BARS];	/* VF BAR size */
};

#ifdef CONFIG_PCI_ATS
void pci_restore_ats_state(struct pci_dev *dev);
#else
static inline void pci_restore_ats_state(struct pci_dev *dev)
{
}
#endif /* CONFIG_PCI_ATS */

#ifdef CONFIG_PCI_IOV
int pci_iov_init(struct pci_dev *dev);
void pci_iov_release(struct pci_dev *dev);
void pci_iov_update_resource(struct pci_dev *dev, int resno);
resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
void pci_restore_iov_state(struct pci_dev *dev);
int pci_iov_bus_range(struct pci_bus *bus);

#else
static inline int pci_iov_init(struct pci_dev *dev)
{
	return -ENODEV;
}
static inline void pci_iov_release(struct pci_dev *dev)

{
}
static inline void pci_restore_iov_state(struct pci_dev *dev)
{
}
static inline int pci_iov_bus_range(struct pci_bus *bus)
{
	return 0;
}

#endif /* CONFIG_PCI_IOV */

unsigned long pci_cardbus_resource_alignment(struct resource *);

static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
						     struct resource *res)
{
#ifdef CONFIG_PCI_IOV
	int resno = res - dev->resource;

	if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
		return pci_sriov_resource_alignment(dev, resno);
#endif
	if (dev->class >> 8  == PCI_CLASS_BRIDGE_CARDBUS)
		return pci_cardbus_resource_alignment(res);
	return resource_alignment(res);
}

void pci_enable_acs(struct pci_dev *dev);

#ifdef CONFIG_PCIE_PTM
void pci_ptm_init(struct pci_dev *dev);
#else
static inline void pci_ptm_init(struct pci_dev *dev) { }
#endif

struct pci_dev_reset_methods {
	u16 vendor;
	u16 device;
	int (*reset)(struct pci_dev *dev, int probe);
};

#ifdef CONFIG_PCI_QUIRKS
int pci_dev_specific_reset(struct pci_dev *dev, int probe);
#else
static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
{
	return -ENOTTY;
}
#endif

#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
			  struct resource *res);
#endif

#endif /* DRIVERS_PCI_H */
Commit	Line	Data
557848c3 ZY	1	#ifndef DRIVERS_PCI_H
	2	#define DRIVERS_PCI_H
	3
fff905f3 WY	4	#define PCI_FIND_CAP_TTL 48
fff905f3 WY	5
343e51ae JK	6	extern const unsigned char pcie_link_speed[];
343e51ae JK	7
7a1562d4 YL	8	bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
7a1562d4 YL	9
1da177e4 LT	10	/* Functions internal to the PCI core code */
1da177e4 LT	11
f39d5b72 BH	12	int pci_create_sysfs_dev_files(struct pci_dev *pdev);
f39d5b72 BH	13	void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
6058989b	14	#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
911e1c9b	15	static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
b879743f	16	{ return; }
911e1c9b	17	static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
b879743f	18	{ return; }
911e1c9b	19	#else
f39d5b72 BH	20	void pci_create_firmware_label_files(struct pci_dev *pdev);
f39d5b72 BH	21	void pci_remove_firmware_label_files(struct pci_dev *pdev);
911e1c9b	22	#endif
f39d5b72	23	void pci_cleanup_rom(struct pci_dev *dev);
9eff02e2	24	#ifdef HAVE_PCI_MMAP
3b519e4e MW	25	enum pci_mmap_api {
	26	PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
	27	PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
	28	};
f39d5b72 BH	29	int pci_mmap_fits(struct pci_dev pdev, int resno, struct vm_area_struct vmai,
f39d5b72 BH	30	enum pci_mmap_api mmap_api);
9eff02e2	31	#endif
711d5779	32	int pci_probe_reset_function(struct pci_dev *dev);
ce5ccdef	33
961d9120	34	/**
b33bfdef	35	* struct pci_platform_pm_ops - Firmware PM callbacks
961d9120	36	*
b33bfdef RD	37	* @is_manageable: returns 'true' if given device is power manageable by the
b33bfdef RD	38	* platform firmware
961d9120	39	*
b33bfdef	40	* @set_state: invokes the platform firmware to set the device's power state
961d9120	41	*
cc7cc02b LW	42	* @get_state: queries the platform firmware for a device's current power state
cc7cc02b LW	43	*
b33bfdef RD	44	* @choose_state: returns PCI power state of given device preferred by the
	45	* platform; to be used during system-wide transitions from a
	46	* sleeping state to the working state and vice versa
961d9120	47	*
b33bfdef	48	* @sleep_wake: enables/disables the system wake up capability of given device
eb9d0fe4	49	*
b67ea761 RW	50	* @run_wake: enables/disables the platform to generate run-time wake-up events
	51	* for given device (the device's wake-up capability has to be
	52	* enabled by @sleep_wake for this feature to work)
	53	*
bac2a909 RW	54	* @need_resume: returns 'true' if the given device (which is currently
	55	* suspended) needs to be resumed to be configured for system
	56	* wakeup.
	57	*
961d9120 RW	58	* If given platform is generally capable of power managing PCI devices, all of
	59	* these callbacks are mandatory.
	60	*/
	61	struct pci_platform_pm_ops {
	62	bool (is_manageable)(struct pci_dev dev);
	63	int (set_state)(struct pci_dev dev, pci_power_t state);
cc7cc02b	64	pci_power_t (get_state)(struct pci_dev dev);
961d9120	65	pci_power_t (choose_state)(struct pci_dev dev);
eb9d0fe4	66	int (sleep_wake)(struct pci_dev dev, bool enable);
b67ea761	67	int (run_wake)(struct pci_dev dev, bool enable);
bac2a909	68	bool (need_resume)(struct pci_dev dev);
961d9120 RW	69	};
961d9120 RW	70
299f2ffe	71	int pci_set_platform_pm(const struct pci_platform_pm_ops *ops);
f39d5b72 BH	72	void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
	73	void pci_power_up(struct pci_dev *dev);
	74	void pci_disable_enabled_device(struct pci_dev *dev);
	75	int pci_finish_runtime_suspend(struct pci_dev *dev);
	76	int __pci_pme_wakeup(struct pci_dev dev, void ign);
bac2a909	77	bool pci_dev_keep_suspended(struct pci_dev *dev);
2cef548a	78	void pci_dev_complete_resume(struct pci_dev *pci_dev);
f39d5b72 BH	79	void pci_config_pm_runtime_get(struct pci_dev *dev);
	80	void pci_config_pm_runtime_put(struct pci_dev *dev);
	81	void pci_pm_init(struct pci_dev *dev);
938174e5	82	void pci_ea_init(struct pci_dev *dev);
f39d5b72	83	void pci_allocate_cap_save_buffers(struct pci_dev *dev);
f796841e	84	void pci_free_cap_save_buffers(struct pci_dev *dev);
c6a63307	85	bool pci_bridge_d3_possible(struct pci_dev *dev);
1ed276a7	86	void pci_bridge_d3_update(struct pci_dev *dev);
aa8c6c93	87
b6e335ae RW	88	static inline void pci_wakeup_event(struct pci_dev *dev)
	89	{
	90	/* Wait 100 ms before the system can be put into a sleep state. */
	91	pm_wakeup_event(&dev->dev, 100);
	92	}
	93
326c1cda	94	static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
aa8c6c93 RW	95	{
	96	return !!(pci_dev->subordinate);
	97	}
0f64474b	98
9d26d3a8 MW	99	static inline bool pci_power_manageable(struct pci_dev *pci_dev)
	100	{
	101	/*
	102	* Currently we allow normal PCI devices and PCI bridges transition
	103	* into D3 if their bridge_d3 is set.
	104	*/
	105	return !pci_has_subordinate(pci_dev) \|\| pci_dev->bridge_d3;
	106	}
	107
94e61088	108	struct pci_vpd_ops {
287d19ce SH	109	ssize_t (read)(struct pci_dev dev, loff_t pos, size_t count, void *buf);
287d19ce SH	110	ssize_t (write)(struct pci_dev dev, loff_t pos, size_t count, const void *buf);
cb92148b	111	int (set_size)(struct pci_dev dev, size_t len);
94e61088 BH	112	};
	113
	114	struct pci_vpd {
287d19ce	115	const struct pci_vpd_ops *ops;
94e61088	116	struct bin_attribute attr; / descriptor for sysfs VPD entry */
408641e9 BH	117	struct mutex lock;
	118	unsigned int len;
	119	u16 flag;
	120	u8 cap;
	121	u8 busy:1;
	122	u8 valid:1;
94e61088 BH	123	};
94e61088 BH	124
f1cd93f9	125	int pci_vpd_init(struct pci_dev *dev);
64379079	126	void pci_vpd_release(struct pci_dev *dev);
94e61088	127
1da177e4 LT	128	/* PCI /proc functions */
1da177e4 LT	129	#ifdef CONFIG_PROC_FS
f39d5b72 BH	130	int pci_proc_attach_device(struct pci_dev *dev);
	131	int pci_proc_detach_device(struct pci_dev *dev);
	132	int pci_proc_detach_bus(struct pci_bus *bus);
1da177e4 LT	133	#else
	134	static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
	135	static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
1da177e4 LT	136	static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
	137	#endif
	138
	139	/* Functions for PCI Hotplug drivers to use */
a8e4b9c1	140	int pci_hp_add_bridge(struct pci_dev *dev);
1da177e4	141
f19aeb1f	142	#ifdef HAVE_PCI_LEGACY
f39d5b72 BH	143	void pci_create_legacy_files(struct pci_bus *bus);
f39d5b72 BH	144	void pci_remove_legacy_files(struct pci_bus *bus);
f19aeb1f BH	145	#else
	146	static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
	147	static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
	148	#endif
1da177e4 LT	149
1da177e4 LT	150	/* Lock for read/write access to pci device and bus lists */
d71374da	151	extern struct rw_semaphore pci_bus_sem;
1da177e4	152
a2e27787 JK	153	extern raw_spinlock_t pci_lock;
a2e27787 JK	154
ffadcc2f	155	extern unsigned int pci_pm_d3_delay;
88187dfa	156
4b47b0ee	157	#ifdef CONFIG_PCI_MSI
309e57df	158	void pci_no_msi(void);
4b47b0ee	159	#else
309e57df	160	static inline void pci_no_msi(void) { }
4b47b0ee	161	#endif
8fed4b65	162
6a25f5e3 MT	163	static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
	164	{
	165	u16 control;
	166
	167	pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
	168	control &= ~PCI_MSI_FLAGS_ENABLE;
	169	if (enable)
	170	control \|= PCI_MSI_FLAGS_ENABLE;
	171	pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
	172	}
	173
	174	static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
	175	{
	176	u16 ctrl;
	177
	178	pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
	179	ctrl &= ~clear;
	180	ctrl \|= set;
	181	pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
	182	}
	183
b55438fd	184	void pci_realloc_get_opt(char *);
f483d392	185
ffadcc2f KCA	186	static inline int pci_no_d1d2(struct pci_dev *dev)
	187	{
	188	unsigned int parent_dstates = 0;
4b47b0ee	189
ffadcc2f KCA	190	if (dev->bus->self)
	191	parent_dstates = dev->bus->self->no_d1d2;
	192	return (dev->no_d1d2 \|\| parent_dstates);
	193
	194	}
5136b2da	195	extern const struct attribute_group *pci_dev_groups[];
56039e65	196	extern const struct attribute_group *pcibus_groups[];
4e15c46b	197	extern struct device_type pci_dev_type;
0f49ba55	198	extern const struct attribute_group *pci_bus_groups[];
705b1aaa	199
1da177e4 LT	200
	201	/**
	202	* pci_match_one_device - Tell if a PCI device structure has a matching
	203	* PCI device id structure
	204	* @id: single PCI device id structure to match
	205	* @dev: the PCI device structure to match against
367b09fe	206	*
1da177e4 LT	207	* Returns the matching pci_device_id structure or %NULL if there is no match.
	208	*/
	209	static inline const struct pci_device_id *
	210	pci_match_one_device(const struct pci_device_id id, const struct pci_dev dev)
	211	{
	212	if ((id->vendor == PCI_ANY_ID \|\| id->vendor == dev->vendor) &&
	213	(id->device == PCI_ANY_ID \|\| id->device == dev->device) &&
	214	(id->subvendor == PCI_ANY_ID \|\| id->subvendor == dev->subsystem_vendor) &&
	215	(id->subdevice == PCI_ANY_ID \|\| id->subdevice == dev->subsystem_device) &&
	216	!((id->class ^ dev->class) & id->class_mask))
	217	return id;
	218	return NULL;
	219	}
	220
f46753c5 AC	221	/* PCI slot sysfs helper code */
	222	#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
	223
	224	extern struct kset *pci_slots_kset;
	225
	226	struct pci_slot_attribute {
	227	struct attribute attr;
	228	ssize_t (show)(struct pci_slot , char *);
	229	ssize_t (store)(struct pci_slot , const char *, size_t);
	230	};
	231	#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
	232
0b400c7e YZ	233	enum pci_bar_type {
	234	pci_bar_unknown, /* Standard PCI BAR probe */
	235	pci_bar_io, /* An io port BAR */
	236	pci_bar_mem32, /* A 32-bit memory BAR */
	237	pci_bar_mem64, /* A 64-bit memory BAR */
	238	};
	239
efdc87da YL	240	bool pci_bus_read_dev_vendor_id(struct pci_bus bus, int devfn, u32 pl,
efdc87da YL	241	int crs_timeout);
f39d5b72 BH	242	int pci_setup_device(struct pci_dev *dev);
	243	int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
	244	struct resource *res, unsigned int reg);
f39d5b72	245	void pci_configure_ari(struct pci_dev *dev);
10874f5a	246	void __pci_bus_size_bridges(struct pci_bus *bus,
d66ecb72	247	struct list_head *realloc_head);
10874f5a BH	248	void __pci_bus_assign_resources(const struct pci_bus *bus,
	249	struct list_head *realloc_head,
	250	struct list_head *fail_head);
0f7e7aee	251	bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
939de1d6	252
2069ecfb	253	void pci_reassigndev_resource_alignment(struct pci_dev *dev);
f39d5b72	254	void pci_disable_bridge_window(struct pci_dev *dev);
32a9a682	255
d1b054da YZ	256	/* Single Root I/O Virtualization */
	257	struct pci_sriov {
	258	int pos; /* capability position */
	259	int nres; /* number of resources */
	260	u32 cap; /* SR-IOV Capabilities */
	261	u16 ctrl; /* SR-IOV Control */
6b136724 BH	262	u16 total_VFs; /* total VFs associated with the PF */
	263	u16 initial_VFs; /* initial VFs associated with the PF */
	264	u16 num_VFs; /* number of VFs available */
d1b054da YZ	265	u16 offset; /* first VF Routing ID offset */
	266	u16 stride; /* following VF stride */
	267	u32 pgsz; /* page size for BAR alignment */
	268	u8 link; /* Function Dependency Link */
4449f079	269	u8 max_VF_buses; /* max buses consumed by VFs */
6b136724	270	u16 driver_max_VFs; /* max num VFs driver supports */
d1b054da YZ	271	struct pci_dev dev; / lowest numbered PF */
	272	struct pci_dev self; / this PF */
	273	struct mutex lock; /* lock for VF bus */
0e6c9122	274	resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
d1b054da YZ	275	};
d1b054da YZ	276
1900ca13	277	#ifdef CONFIG_PCI_ATS
f39d5b72	278	void pci_restore_ats_state(struct pci_dev *dev);
1900ca13 HX	279	#else
	280	static inline void pci_restore_ats_state(struct pci_dev *dev)
	281	{
	282	}
	283	#endif /* CONFIG_PCI_ATS */
	284
d1b054da	285	#ifdef CONFIG_PCI_IOV
f39d5b72 BH	286	int pci_iov_init(struct pci_dev *dev);
f39d5b72 BH	287	void pci_iov_release(struct pci_dev *dev);
6ffa2489	288	void pci_iov_update_resource(struct pci_dev *dev, int resno);
f39d5b72 BH	289	resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
	290	void pci_restore_iov_state(struct pci_dev *dev);
	291	int pci_iov_bus_range(struct pci_bus *bus);
302b4215	292
d1b054da YZ	293	#else
	294	static inline int pci_iov_init(struct pci_dev *dev)
	295	{
	296	return -ENODEV;
	297	}
	298	static inline void pci_iov_release(struct pci_dev *dev)
	299
	300	{
	301	}
8c5cdb6a YZ	302	static inline void pci_restore_iov_state(struct pci_dev *dev)
	303	{
	304	}
a28724b0 YZ	305	static inline int pci_iov_bus_range(struct pci_bus *bus)
	306	{
	307	return 0;
	308	}
302b4215	309
d1b054da YZ	310	#endif /* CONFIG_PCI_IOV */
d1b054da YZ	311
f39d5b72	312	unsigned long pci_cardbus_resource_alignment(struct resource *);
0a2daa1c	313
0e52247a	314	static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
f39d5b72	315	struct resource *res)
6faf17f6 CW	316	{
	317	#ifdef CONFIG_PCI_IOV
	318	int resno = res - dev->resource;
	319
	320	if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
	321	return pci_sriov_resource_alignment(dev, resno);
	322	#endif
0a2daa1c RP	323	if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
0a2daa1c RP	324	return pci_cardbus_resource_alignment(res);
6faf17f6 CW	325	return resource_alignment(res);
	326	}
	327
f39d5b72	328	void pci_enable_acs(struct pci_dev *dev);
ae21ee65	329
9bb04a0c JY	330	#ifdef CONFIG_PCIE_PTM
	331	void pci_ptm_init(struct pci_dev *dev);
	332	#else
	333	static inline void pci_ptm_init(struct pci_dev *dev) { }
	334	#endif
	335
b9c3b266 DC	336	struct pci_dev_reset_methods {
	337	u16 vendor;
	338	u16 device;
	339	int (reset)(struct pci_dev dev, int probe);
	340	};
	341
93177a74	342	#ifdef CONFIG_PCI_QUIRKS
f39d5b72	343	int pci_dev_specific_reset(struct pci_dev *dev, int probe);
93177a74 RW	344	#else
	345	static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
	346	{
	347	return -ENOTTY;
	348	}
	349	#endif
b9c3b266	350
169de969 DL	351	#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
	352	int acpi_get_rc_resources(struct device dev, const char hid, u16 segment,
	353	struct resource *res);
	354	#endif
	355
557848c3	356	#endif /* DRIVERS_PCI_H */