4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 /* Functions internal to the PCI core code */
9 extern int pci_uevent(struct device
*dev
, struct kobj_uevent_env
*env
);
10 extern int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
11 extern void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
12 extern void pci_cleanup_rom(struct pci_dev
*dev
);
14 extern int pci_mmap_fits(struct pci_dev
*pdev
, int resno
,
15 struct vm_area_struct
*vma
);
19 * Firmware PM callbacks
21 * @is_manageable - returns 'true' if given device is power manageable by the
24 * @set_state - invokes the platform firmware to set the device's power state
26 * @choose_state - returns PCI power state of given device preferred by the
27 * platform; to be used during system-wide transitions from a
28 * sleeping state to the working state and vice versa
30 * @can_wakeup - returns 'true' if given device is capable of waking up the
31 * system from a sleeping state
33 * @sleep_wake - enables/disables the system wake up capability of given device
35 * If given platform is generally capable of power managing PCI devices, all of
36 * these callbacks are mandatory.
38 struct pci_platform_pm_ops
{
39 bool (*is_manageable
)(struct pci_dev
*dev
);
40 int (*set_state
)(struct pci_dev
*dev
, pci_power_t state
);
41 pci_power_t (*choose_state
)(struct pci_dev
*dev
);
42 bool (*can_wakeup
)(struct pci_dev
*dev
);
43 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
46 extern int pci_set_platform_pm(struct pci_platform_pm_ops
*ops
);
47 extern void pci_pm_init(struct pci_dev
*dev
);
48 extern void platform_pci_wakeup_init(struct pci_dev
*dev
);
49 extern void pci_allocate_cap_save_buffers(struct pci_dev
*dev
);
51 extern int pci_user_read_config_byte(struct pci_dev
*dev
, int where
, u8
*val
);
52 extern int pci_user_read_config_word(struct pci_dev
*dev
, int where
, u16
*val
);
53 extern int pci_user_read_config_dword(struct pci_dev
*dev
, int where
, u32
*val
);
54 extern int pci_user_write_config_byte(struct pci_dev
*dev
, int where
, u8 val
);
55 extern int pci_user_write_config_word(struct pci_dev
*dev
, int where
, u16 val
);
56 extern int pci_user_write_config_dword(struct pci_dev
*dev
, int where
, u32 val
);
59 ssize_t (*read
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, void *buf
);
60 ssize_t (*write
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, const void *buf
);
61 void (*release
)(struct pci_dev
*dev
);
66 const struct pci_vpd_ops
*ops
;
67 struct bin_attribute
*attr
; /* descriptor for sysfs VPD entry */
70 extern int pci_vpd_pci22_init(struct pci_dev
*dev
);
71 static inline void pci_vpd_release(struct pci_dev
*dev
)
74 dev
->vpd
->ops
->release(dev
);
77 /* PCI /proc functions */
79 extern int pci_proc_attach_device(struct pci_dev
*dev
);
80 extern int pci_proc_detach_device(struct pci_dev
*dev
);
81 extern int pci_proc_detach_bus(struct pci_bus
*bus
);
83 static inline int pci_proc_attach_device(struct pci_dev
*dev
) { return 0; }
84 static inline int pci_proc_detach_device(struct pci_dev
*dev
) { return 0; }
85 static inline int pci_proc_detach_bus(struct pci_bus
*bus
) { return 0; }
88 /* Functions for PCI Hotplug drivers to use */
89 extern unsigned int pci_do_scan_bus(struct pci_bus
*bus
);
91 #ifdef HAVE_PCI_LEGACY
92 extern void pci_create_legacy_files(struct pci_bus
*bus
);
93 extern void pci_remove_legacy_files(struct pci_bus
*bus
);
95 static inline void pci_create_legacy_files(struct pci_bus
*bus
) { return; }
96 static inline void pci_remove_legacy_files(struct pci_bus
*bus
) { return; }
99 /* Lock for read/write access to pci device and bus lists */
100 extern struct rw_semaphore pci_bus_sem
;
102 extern unsigned int pci_pm_d3_delay
;
104 #ifdef CONFIG_PCI_MSI
105 void pci_no_msi(void);
106 extern void pci_msi_init_pci_dev(struct pci_dev
*dev
);
108 static inline void pci_no_msi(void) { }
109 static inline void pci_msi_init_pci_dev(struct pci_dev
*dev
) { }
112 #ifdef CONFIG_PCIEAER
113 void pci_no_aer(void);
115 static inline void pci_no_aer(void) { }
118 static inline int pci_no_d1d2(struct pci_dev
*dev
)
120 unsigned int parent_dstates
= 0;
123 parent_dstates
= dev
->bus
->self
->no_d1d2
;
124 return (dev
->no_d1d2
|| parent_dstates
);
127 extern int pcie_mch_quirk
;
128 extern struct device_attribute pci_dev_attrs
[];
129 extern struct device_attribute dev_attr_cpuaffinity
;
130 extern struct device_attribute dev_attr_cpulistaffinity
;
133 * pci_match_one_device - Tell if a PCI device structure has a matching
134 * PCI device id structure
135 * @id: single PCI device id structure to match
136 * @dev: the PCI device structure to match against
138 * Returns the matching pci_device_id structure or %NULL if there is no match.
140 static inline const struct pci_device_id
*
141 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
143 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
144 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
145 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
146 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
147 !((id
->class ^ dev
->class) & id
->class_mask
))
152 struct pci_dev
*pci_find_upstream_pcie_bridge(struct pci_dev
*pdev
);
154 /* PCI slot sysfs helper code */
155 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
157 extern struct kset
*pci_slots_kset
;
159 struct pci_slot_attribute
{
160 struct attribute attr
;
161 ssize_t (*show
)(struct pci_slot
*, char *);
162 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
164 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
167 pci_bar_unknown
, /* Standard PCI BAR probe */
168 pci_bar_io
, /* An io port BAR */
169 pci_bar_mem32
, /* A 32-bit memory BAR */
170 pci_bar_mem64
, /* A 64-bit memory BAR */
173 extern int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
174 struct resource
*res
, unsigned int reg
);
175 extern int pci_resource_bar(struct pci_dev
*dev
, int resno
,
176 enum pci_bar_type
*type
);
177 extern int pci_bus_add_child(struct pci_bus
*bus
);
178 extern void pci_enable_ari(struct pci_dev
*dev
);
180 * pci_ari_enabled - query ARI forwarding status
183 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
185 static inline int pci_ari_enabled(struct pci_bus
*bus
)
187 return bus
->self
&& bus
->self
->ari_enabled
;
190 #endif /* DRIVERS_PCI_H */