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

#ifndef DRIVERS_PCI_H
#define DRIVERS_PCI_H

#include <linux/workqueue.h>

#define PCI_CFG_SPACE_SIZE	256
#define PCI_CFG_SPACE_EXP_SIZE	4096

/* Functions internal to the PCI core code */

extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
extern 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
extern void pci_create_firmware_label_files(struct pci_dev *pdev);
extern void pci_remove_firmware_label_files(struct pci_dev *pdev);
#endif
extern 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> */
};
extern 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
 *
 * @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
 *
 * @can_wakeup: returns 'true' if given device is capable of waking up the
 *              system from a sleeping state
 *
 * @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)
 *
 * 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 (*choose_state)(struct pci_dev *dev);
	bool (*can_wakeup)(struct pci_dev *dev);
	int (*sleep_wake)(struct pci_dev *dev, bool enable);
	int (*run_wake)(struct pci_dev *dev, bool enable);
};

extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
extern void pci_disable_enabled_device(struct pci_dev *dev);
extern int pci_finish_runtime_suspend(struct pci_dev *dev);
extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
extern void pci_pm_init(struct pci_dev *dev);
extern void platform_pci_wakeup_init(struct pci_dev *dev);
extern void pci_allocate_cap_save_buffers(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_is_bridge(struct pci_dev *pci_dev)
{
	return !!(pci_dev->subordinate);
}

extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);

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);
	void (*release)(struct pci_dev *dev);
};

struct pci_vpd {
	unsigned int len;
	const struct pci_vpd_ops *ops;
	struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
};

extern int pci_vpd_pci22_init(struct pci_dev *dev);
static inline void pci_vpd_release(struct pci_dev *dev)
{
	if (dev->vpd)
		dev->vpd->ops->release(dev);
}

/* PCI /proc functions */
#ifdef CONFIG_PROC_FS
extern int pci_proc_attach_device(struct pci_dev *dev);
extern int pci_proc_detach_device(struct pci_dev *dev);
extern 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 */
extern unsigned int pci_do_scan_bus(struct pci_bus *bus);

#ifdef HAVE_PCI_LEGACY
extern void pci_create_legacy_files(struct pci_bus *bus);
extern 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);
extern void pci_msi_init_pci_dev(struct pci_dev *dev);
#else
static inline void pci_no_msi(void) { }
static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
#endif

extern void pci_realloc(void);

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 struct device_attribute pci_dev_attrs[];
extern struct device_attribute pcibus_dev_attrs[];
#ifdef CONFIG_HOTPLUG
extern struct bus_attribute pci_bus_attrs[];
#else
#define pci_bus_attrs	NULL
#endif


/**
 * 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);
extern int pci_setup_device(struct pci_dev *dev);
extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
				struct resource *res, unsigned int reg);
extern int pci_resource_bar(struct pci_dev *dev, int resno,
			    enum pci_bar_type *type);
extern int pci_bus_add_child(struct pci_bus *bus);
extern void pci_enable_ari(struct pci_dev *dev);
/**
 * pci_ari_enabled - query ARI forwarding status
 * @bus: the PCI bus
 *
 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
 */
static inline int pci_ari_enabled(struct pci_bus *bus)
{
	return bus->self && bus->self->ari_enabled;
}

#ifdef CONFIG_PCI_QUIRKS
extern int pci_is_reassigndev(struct pci_dev *dev);
resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
extern void pci_disable_bridge_window(struct pci_dev *dev);
#endif

/* 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;		/* total VFs associated with the PF */
	u16 initial;		/* initial VFs associated with the PF */
	u16 nr_virtfn;		/* 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 */
	struct pci_dev *dev;	/* lowest numbered PF */
	struct pci_dev *self;	/* this PF */
	struct mutex lock;	/* lock for VF bus */
	struct work_struct mtask; /* VF Migration task */
	u8 __iomem *mstate;	/* VF Migration State Array */
};

#ifdef CONFIG_PCI_ATS
extern 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
extern int pci_iov_init(struct pci_dev *dev);
extern void pci_iov_release(struct pci_dev *dev);
extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
				enum pci_bar_type *type);
extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev,
						    int resno);
extern void pci_restore_iov_state(struct pci_dev *dev);
extern 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 int pci_iov_resource_bar(struct pci_dev *dev, int resno,
				       enum pci_bar_type *type)
{
	return 0;
}
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 */

extern 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);
}

extern void pci_enable_acs(struct pci_dev *dev);

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

#ifdef CONFIG_PCI_QUIRKS
extern 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

#endif /* DRIVERS_PCI_H */
Commit	Line	Data
557848c3 ZY	1	#ifndef DRIVERS_PCI_H
	2	#define DRIVERS_PCI_H
	3
74bb1bcc YZ	4	#include <linux/workqueue.h>
74bb1bcc YZ	5
557848c3 ZY	6	#define PCI_CFG_SPACE_SIZE 256
	7	#define PCI_CFG_SPACE_EXP_SIZE 4096
	8
1da177e4 LT	9	/* Functions internal to the PCI core code */
1da177e4 LT	10
7eff2e7a	11	extern int pci_uevent(struct device dev, struct kobj_uevent_env env);
1da177e4 LT	12	extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
1da177e4 LT	13	extern 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 N	19	#else
	20	extern void pci_create_firmware_label_files(struct pci_dev *pdev);
	21	extern void pci_remove_firmware_label_files(struct pci_dev *pdev);
	22	#endif
1da177e4	23	extern 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	};
9eff02e2	29	extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
3b519e4e MW	30	struct vm_area_struct *vmai,
3b519e4e MW	31	enum pci_mmap_api mmap_api);
9eff02e2	32	#endif
711d5779	33	int pci_probe_reset_function(struct pci_dev *dev);
ce5ccdef	34
961d9120	35	/**
b33bfdef	36	* struct pci_platform_pm_ops - Firmware PM callbacks
961d9120	37	*
b33bfdef RD	38	* @is_manageable: returns 'true' if given device is power manageable by the
b33bfdef RD	39	* platform firmware
961d9120	40	*
b33bfdef	41	* @set_state: invokes the platform firmware to set the device's power state
961d9120	42	*
b33bfdef RD	43	* @choose_state: returns PCI power state of given device preferred by the
	44	* platform; to be used during system-wide transitions from a
	45	* sleeping state to the working state and vice versa
961d9120	46	*
b33bfdef RD	47	* @can_wakeup: returns 'true' if given device is capable of waking up the
b33bfdef RD	48	* system from a sleeping state
eb9d0fe4	49	*
b33bfdef	50	* @sleep_wake: enables/disables the system wake up capability of given device
eb9d0fe4	51	*
b67ea761 RW	52	* @run_wake: enables/disables the platform to generate run-time wake-up events
	53	* for given device (the device's wake-up capability has to be
	54	* enabled by @sleep_wake for this feature to work)
	55	*
961d9120 RW	56	* If given platform is generally capable of power managing PCI devices, all of
	57	* these callbacks are mandatory.
	58	*/
	59	struct pci_platform_pm_ops {
	60	bool (is_manageable)(struct pci_dev dev);
	61	int (set_state)(struct pci_dev dev, pci_power_t state);
	62	pci_power_t (choose_state)(struct pci_dev dev);
eb9d0fe4 RW	63	bool (can_wakeup)(struct pci_dev dev);
eb9d0fe4 RW	64	int (sleep_wake)(struct pci_dev dev, bool enable);
b67ea761	65	int (run_wake)(struct pci_dev dev, bool enable);
961d9120 RW	66	};
	67
	68	extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
73410429	69	extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
fa58d305	70	extern void pci_disable_enabled_device(struct pci_dev *dev);
6cbf8214	71	extern int pci_finish_runtime_suspend(struct pci_dev *dev);
b67ea761	72	extern int __pci_pme_wakeup(struct pci_dev dev, void ign);
eb9d0fe4	73	extern void pci_pm_init(struct pci_dev *dev);
eb9c39d0	74	extern void platform_pci_wakeup_init(struct pci_dev *dev);
63f4898a	75	extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
aa8c6c93	76
b6e335ae RW	77	static inline void pci_wakeup_event(struct pci_dev *dev)
	78	{
	79	/* Wait 100 ms before the system can be put into a sleep state. */
	80	pm_wakeup_event(&dev->dev, 100);
	81	}
	82
aa8c6c93 RW	83	static inline bool pci_is_bridge(struct pci_dev *pci_dev)
	84	{
	85	return !!(pci_dev->subordinate);
	86	}
0f64474b	87
e04b0ea2 BK	88	extern int pci_user_read_config_byte(struct pci_dev dev, int where, u8 val);
	89	extern int pci_user_read_config_word(struct pci_dev dev, int where, u16 val);
	90	extern int pci_user_read_config_dword(struct pci_dev dev, int where, u32 val);
	91	extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
	92	extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
	93	extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
	94
94e61088	95	struct pci_vpd_ops {
287d19ce SH	96	ssize_t (read)(struct pci_dev dev, loff_t pos, size_t count, void *buf);
287d19ce SH	97	ssize_t (write)(struct pci_dev dev, loff_t pos, size_t count, const void *buf);
94e61088 BH	98	void (release)(struct pci_dev dev);
	99	};
	100
	101	struct pci_vpd {
99cb233d	102	unsigned int len;
287d19ce	103	const struct pci_vpd_ops *ops;
94e61088 BH	104	struct bin_attribute attr; / descriptor for sysfs VPD entry */
	105	};
	106
	107	extern int pci_vpd_pci22_init(struct pci_dev *dev);
	108	static inline void pci_vpd_release(struct pci_dev *dev)
	109	{
	110	if (dev->vpd)
	111	dev->vpd->ops->release(dev);
	112	}
	113
1da177e4 LT	114	/* PCI /proc functions */
	115	#ifdef CONFIG_PROC_FS
	116	extern int pci_proc_attach_device(struct pci_dev *dev);
	117	extern int pci_proc_detach_device(struct pci_dev *dev);
1da177e4 LT	118	extern int pci_proc_detach_bus(struct pci_bus *bus);
	119	#else
	120	static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
	121	static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
1da177e4 LT	122	static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
	123	#endif
	124
	125	/* Functions for PCI Hotplug drivers to use */
1da177e4	126	extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
1da177e4	127
f19aeb1f BH	128	#ifdef HAVE_PCI_LEGACY
f19aeb1f BH	129	extern void pci_create_legacy_files(struct pci_bus *bus);
1da177e4	130	extern void pci_remove_legacy_files(struct pci_bus *bus);
f19aeb1f BH	131	#else
	132	static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
	133	static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
	134	#endif
1da177e4 LT	135
1da177e4 LT	136	/* Lock for read/write access to pci device and bus lists */
d71374da	137	extern struct rw_semaphore pci_bus_sem;
1da177e4	138
a2e27787 JK	139	extern raw_spinlock_t pci_lock;
a2e27787 JK	140
ffadcc2f	141	extern unsigned int pci_pm_d3_delay;
88187dfa	142
4b47b0ee	143	#ifdef CONFIG_PCI_MSI
309e57df	144	void pci_no_msi(void);
4aa9bc95	145	extern void pci_msi_init_pci_dev(struct pci_dev *dev);
4b47b0ee	146	#else
309e57df	147	static inline void pci_no_msi(void) { }
4aa9bc95	148	static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
4b47b0ee	149	#endif
8fed4b65	150
f483d392 RP	151	extern void pci_realloc(void);
f483d392 RP	152
ffadcc2f KCA	153	static inline int pci_no_d1d2(struct pci_dev *dev)
	154	{
	155	unsigned int parent_dstates = 0;
4b47b0ee	156
ffadcc2f KCA	157	if (dev->bus->self)
	158	parent_dstates = dev->bus->self->no_d1d2;
	159	return (dev->no_d1d2 \|\| parent_dstates);
	160
	161	}
1da177e4	162	extern struct device_attribute pci_dev_attrs[];
b9d320fc	163	extern struct device_attribute pcibus_dev_attrs[];
705b1aaa AC	164	#ifdef CONFIG_HOTPLUG
	165	extern struct bus_attribute pci_bus_attrs[];
	166	#else
	167	#define pci_bus_attrs NULL
	168	#endif
	169
1da177e4 LT	170
	171	/**
	172	* pci_match_one_device - Tell if a PCI device structure has a matching
	173	* PCI device id structure
	174	* @id: single PCI device id structure to match
	175	* @dev: the PCI device structure to match against
367b09fe	176	*
1da177e4 LT	177	* Returns the matching pci_device_id structure or %NULL if there is no match.
	178	*/
	179	static inline const struct pci_device_id *
	180	pci_match_one_device(const struct pci_device_id id, const struct pci_dev dev)
	181	{
	182	if ((id->vendor == PCI_ANY_ID \|\| id->vendor == dev->vendor) &&
	183	(id->device == PCI_ANY_ID \|\| id->device == dev->device) &&
	184	(id->subvendor == PCI_ANY_ID \|\| id->subvendor == dev->subsystem_vendor) &&
	185	(id->subdevice == PCI_ANY_ID \|\| id->subdevice == dev->subsystem_device) &&
	186	!((id->class ^ dev->class) & id->class_mask))
	187	return id;
	188	return NULL;
	189	}
	190
f46753c5 AC	191	/* PCI slot sysfs helper code */
	192	#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
	193
	194	extern struct kset *pci_slots_kset;
	195
	196	struct pci_slot_attribute {
	197	struct attribute attr;
	198	ssize_t (show)(struct pci_slot , char *);
	199	ssize_t (store)(struct pci_slot , const char *, size_t);
	200	};
	201	#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
	202
0b400c7e YZ	203	enum pci_bar_type {
	204	pci_bar_unknown, /* Standard PCI BAR probe */
	205	pci_bar_io, /* An io port BAR */
	206	pci_bar_mem32, /* A 32-bit memory BAR */
	207	pci_bar_mem64, /* A 64-bit memory BAR */
	208	};
	209
efdc87da YL	210	bool pci_bus_read_dev_vendor_id(struct pci_bus bus, int devfn, u32 pl,
efdc87da YL	211	int crs_timeout);
480b93b7	212	extern int pci_setup_device(struct pci_dev *dev);
0b400c7e YZ	213	extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
0b400c7e YZ	214	struct resource *res, unsigned int reg);
613e7ed6 YZ	215	extern int pci_resource_bar(struct pci_dev *dev, int resno,
613e7ed6 YZ	216	enum pci_bar_type *type);
876e501a	217	extern int pci_bus_add_child(struct pci_bus *bus);
58c3a727 YZ	218	extern void pci_enable_ari(struct pci_dev *dev);
	219	/**
	220	* pci_ari_enabled - query ARI forwarding status
6a49d812	221	* @bus: the PCI bus
58c3a727 YZ	222	*
	223	* Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
	224	*/
6a49d812	225	static inline int pci_ari_enabled(struct pci_bus *bus)
58c3a727	226	{
6a49d812	227	return bus->self && bus->self->ari_enabled;
58c3a727 YZ	228	}
58c3a727 YZ	229
32a9a682 YS	230	#ifdef CONFIG_PCI_QUIRKS
	231	extern int pci_is_reassigndev(struct pci_dev *dev);
	232	resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
	233	extern void pci_disable_bridge_window(struct pci_dev *dev);
	234	#endif
	235
d1b054da YZ	236	/* Single Root I/O Virtualization */
	237	struct pci_sriov {
	238	int pos; /* capability position */
	239	int nres; /* number of resources */
	240	u32 cap; /* SR-IOV Capabilities */
	241	u16 ctrl; /* SR-IOV Control */
	242	u16 total; /* total VFs associated with the PF */
dd7cc44d YZ	243	u16 initial; /* initial VFs associated with the PF */
dd7cc44d YZ	244	u16 nr_virtfn; /* number of VFs available */
d1b054da YZ	245	u16 offset; /* first VF Routing ID offset */
	246	u16 stride; /* following VF stride */
	247	u32 pgsz; /* page size for BAR alignment */
	248	u8 link; /* Function Dependency Link */
	249	struct pci_dev dev; / lowest numbered PF */
	250	struct pci_dev self; / this PF */
	251	struct mutex lock; /* lock for VF bus */
74bb1bcc YZ	252	struct work_struct mtask; /* VF Migration task */
74bb1bcc YZ	253	u8 __iomem mstate; / VF Migration State Array */
d1b054da YZ	254	};
d1b054da YZ	255
1900ca13 HX	256	#ifdef CONFIG_PCI_ATS
	257	extern void pci_restore_ats_state(struct pci_dev *dev);
	258	#else
	259	static inline void pci_restore_ats_state(struct pci_dev *dev)
	260	{
	261	}
	262	#endif /* CONFIG_PCI_ATS */
	263
d1b054da YZ	264	#ifdef CONFIG_PCI_IOV
	265	extern int pci_iov_init(struct pci_dev *dev);
	266	extern void pci_iov_release(struct pci_dev *dev);
	267	extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
	268	enum pci_bar_type *type);
0e52247a CM	269	extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev,
0e52247a CM	270	int resno);
8c5cdb6a	271	extern void pci_restore_iov_state(struct pci_dev *dev);
a28724b0	272	extern int pci_iov_bus_range(struct pci_bus *bus);
302b4215	273
d1b054da YZ	274	#else
	275	static inline int pci_iov_init(struct pci_dev *dev)
	276	{
	277	return -ENODEV;
	278	}
	279	static inline void pci_iov_release(struct pci_dev *dev)
	280
	281	{
	282	}
	283	static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
	284	enum pci_bar_type *type)
	285	{
	286	return 0;
	287	}
8c5cdb6a YZ	288	static inline void pci_restore_iov_state(struct pci_dev *dev)
	289	{
	290	}
a28724b0 YZ	291	static inline int pci_iov_bus_range(struct pci_bus *bus)
	292	{
	293	return 0;
	294	}
302b4215	295
d1b054da YZ	296	#endif /* CONFIG_PCI_IOV */
d1b054da YZ	297
0a2daa1c RP	298	extern unsigned long pci_cardbus_resource_alignment(struct resource *);
0a2daa1c RP	299
0e52247a	300	static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
6faf17f6 CW	301	struct resource *res)
	302	{
	303	#ifdef CONFIG_PCI_IOV
	304	int resno = res - dev->resource;
	305
	306	if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
	307	return pci_sriov_resource_alignment(dev, resno);
	308	#endif
0a2daa1c RP	309	if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
0a2daa1c RP	310	return pci_cardbus_resource_alignment(res);
6faf17f6 CW	311	return resource_alignment(res);
	312	}
	313
ae21ee65 AK	314	extern void pci_enable_acs(struct pci_dev *dev);
ae21ee65 AK	315
b9c3b266 DC	316	struct pci_dev_reset_methods {
	317	u16 vendor;
	318	u16 device;
	319	int (reset)(struct pci_dev dev, int probe);
	320	};
	321
93177a74	322	#ifdef CONFIG_PCI_QUIRKS
5b889bf2	323	extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
93177a74 RW	324	#else
	325	static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
	326	{
	327	return -ENOTTY;
	328	}
	329	#endif
b9c3b266	330
557848c3	331	#endif /* DRIVERS_PCI_H */