4 #include <linux/workqueue.h>
6 #define PCI_CFG_SPACE_SIZE 256
7 #define PCI_CFG_SPACE_EXP_SIZE 4096
9 /* Functions internal to the PCI core code */
11 extern int pci_uevent(struct device
*dev
, struct kobj_uevent_env
*env
);
12 extern int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
13 extern void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
14 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
15 static inline void pci_create_firmware_label_files(struct pci_dev
*pdev
)
17 static inline void pci_remove_firmware_label_files(struct pci_dev
*pdev
)
20 extern void pci_create_firmware_label_files(struct pci_dev
*pdev
);
21 extern void pci_remove_firmware_label_files(struct pci_dev
*pdev
);
23 extern void pci_cleanup_rom(struct pci_dev
*dev
);
26 PCI_MMAP_SYSFS
, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
27 PCI_MMAP_PROCFS
/* mmap on /proc/bus/pci/<BDF> */
29 extern int pci_mmap_fits(struct pci_dev
*pdev
, int resno
,
30 struct vm_area_struct
*vmai
,
31 enum pci_mmap_api mmap_api
);
33 int pci_probe_reset_function(struct pci_dev
*dev
);
36 * struct pci_platform_pm_ops - Firmware PM callbacks
38 * @is_manageable: returns 'true' if given device is power manageable by the
41 * @set_state: invokes the platform firmware to set the device's power state
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
47 * @can_wakeup: returns 'true' if given device is capable of waking up the
48 * system from a sleeping state
50 * @sleep_wake: enables/disables the system wake up capability of given device
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)
56 * If given platform is generally capable of power managing PCI devices, all of
57 * these callbacks are mandatory.
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
);
63 bool (*can_wakeup
)(struct pci_dev
*dev
);
64 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
65 int (*run_wake
)(struct pci_dev
*dev
, bool enable
);
68 extern int pci_set_platform_pm(struct pci_platform_pm_ops
*ops
);
69 extern void pci_update_current_state(struct pci_dev
*dev
, pci_power_t state
);
70 extern void pci_power_up(struct pci_dev
*dev
);
71 extern void pci_disable_enabled_device(struct pci_dev
*dev
);
72 extern int pci_finish_runtime_suspend(struct pci_dev
*dev
);
73 extern int __pci_pme_wakeup(struct pci_dev
*dev
, void *ign
);
74 extern void pci_wakeup_bus(struct pci_bus
*bus
);
75 extern void pci_config_pm_runtime_get(struct pci_dev
*dev
);
76 extern void pci_config_pm_runtime_put(struct pci_dev
*dev
);
77 extern void pci_pm_init(struct pci_dev
*dev
);
78 extern void platform_pci_wakeup_init(struct pci_dev
*dev
);
79 extern void pci_allocate_cap_save_buffers(struct pci_dev
*dev
);
80 void pci_free_cap_save_buffers(struct pci_dev
*dev
);
82 static inline void pci_wakeup_event(struct pci_dev
*dev
)
84 /* Wait 100 ms before the system can be put into a sleep state. */
85 pm_wakeup_event(&dev
->dev
, 100);
88 static inline bool pci_is_bridge(struct pci_dev
*pci_dev
)
90 return !!(pci_dev
->subordinate
);
94 ssize_t (*read
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, void *buf
);
95 ssize_t (*write
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, const void *buf
);
96 void (*release
)(struct pci_dev
*dev
);
101 const struct pci_vpd_ops
*ops
;
102 struct bin_attribute
*attr
; /* descriptor for sysfs VPD entry */
105 extern int pci_vpd_pci22_init(struct pci_dev
*dev
);
106 static inline void pci_vpd_release(struct pci_dev
*dev
)
109 dev
->vpd
->ops
->release(dev
);
112 /* PCI /proc functions */
113 #ifdef CONFIG_PROC_FS
114 extern int pci_proc_attach_device(struct pci_dev
*dev
);
115 extern int pci_proc_detach_device(struct pci_dev
*dev
);
116 extern int pci_proc_detach_bus(struct pci_bus
*bus
);
118 static inline int pci_proc_attach_device(struct pci_dev
*dev
) { return 0; }
119 static inline int pci_proc_detach_device(struct pci_dev
*dev
) { return 0; }
120 static inline int pci_proc_detach_bus(struct pci_bus
*bus
) { return 0; }
123 /* Functions for PCI Hotplug drivers to use */
124 int pci_hp_add_bridge(struct pci_dev
*dev
);
126 #ifdef HAVE_PCI_LEGACY
127 extern void pci_create_legacy_files(struct pci_bus
*bus
);
128 extern void pci_remove_legacy_files(struct pci_bus
*bus
);
130 static inline void pci_create_legacy_files(struct pci_bus
*bus
) { return; }
131 static inline void pci_remove_legacy_files(struct pci_bus
*bus
) { return; }
134 /* Lock for read/write access to pci device and bus lists */
135 extern struct rw_semaphore pci_bus_sem
;
137 extern raw_spinlock_t pci_lock
;
139 extern unsigned int pci_pm_d3_delay
;
141 #ifdef CONFIG_PCI_MSI
142 void pci_no_msi(void);
143 extern void pci_msi_init_pci_dev(struct pci_dev
*dev
);
145 static inline void pci_no_msi(void) { }
146 static inline void pci_msi_init_pci_dev(struct pci_dev
*dev
) { }
149 void pci_realloc_get_opt(char *);
151 static inline int pci_no_d1d2(struct pci_dev
*dev
)
153 unsigned int parent_dstates
= 0;
156 parent_dstates
= dev
->bus
->self
->no_d1d2
;
157 return (dev
->no_d1d2
|| parent_dstates
);
160 extern struct device_attribute pci_dev_attrs
[];
161 extern struct device_attribute pcibus_dev_attrs
[];
162 #ifdef CONFIG_HOTPLUG
163 extern struct bus_attribute pci_bus_attrs
[];
165 #define pci_bus_attrs NULL
170 * pci_match_one_device - Tell if a PCI device structure has a matching
171 * PCI device id structure
172 * @id: single PCI device id structure to match
173 * @dev: the PCI device structure to match against
175 * Returns the matching pci_device_id structure or %NULL if there is no match.
177 static inline const struct pci_device_id
*
178 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
180 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
181 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
182 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
183 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
184 !((id
->class ^ dev
->class) & id
->class_mask
))
189 /* PCI slot sysfs helper code */
190 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
192 extern struct kset
*pci_slots_kset
;
194 struct pci_slot_attribute
{
195 struct attribute attr
;
196 ssize_t (*show
)(struct pci_slot
*, char *);
197 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
199 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
202 pci_bar_unknown
, /* Standard PCI BAR probe */
203 pci_bar_io
, /* An io port BAR */
204 pci_bar_mem32
, /* A 32-bit memory BAR */
205 pci_bar_mem64
, /* A 64-bit memory BAR */
208 bool pci_bus_read_dev_vendor_id(struct pci_bus
*bus
, int devfn
, u32
*pl
,
210 extern int pci_setup_device(struct pci_dev
*dev
);
211 extern int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
212 struct resource
*res
, unsigned int reg
);
213 extern int pci_resource_bar(struct pci_dev
*dev
, int resno
,
214 enum pci_bar_type
*type
);
215 extern int pci_bus_add_child(struct pci_bus
*bus
);
216 extern void pci_enable_ari(struct pci_dev
*dev
);
218 * pci_ari_enabled - query ARI forwarding status
221 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
223 static inline int pci_ari_enabled(struct pci_bus
*bus
)
225 return bus
->self
&& bus
->self
->ari_enabled
;
228 void pci_reassigndev_resource_alignment(struct pci_dev
*dev
);
229 extern void pci_disable_bridge_window(struct pci_dev
*dev
);
231 /* Single Root I/O Virtualization */
233 int pos
; /* capability position */
234 int nres
; /* number of resources */
235 u32 cap
; /* SR-IOV Capabilities */
236 u16 ctrl
; /* SR-IOV Control */
237 u16 total
; /* total VFs associated with the PF */
238 u16 initial
; /* initial VFs associated with the PF */
239 u16 nr_virtfn
; /* number of VFs available */
240 u16 offset
; /* first VF Routing ID offset */
241 u16 stride
; /* following VF stride */
242 u32 pgsz
; /* page size for BAR alignment */
243 u8 link
; /* Function Dependency Link */
244 struct pci_dev
*dev
; /* lowest numbered PF */
245 struct pci_dev
*self
; /* this PF */
246 struct mutex lock
; /* lock for VF bus */
247 struct work_struct mtask
; /* VF Migration task */
248 u8 __iomem
*mstate
; /* VF Migration State Array */
251 #ifdef CONFIG_PCI_ATS
252 extern void pci_restore_ats_state(struct pci_dev
*dev
);
254 static inline void pci_restore_ats_state(struct pci_dev
*dev
)
257 #endif /* CONFIG_PCI_ATS */
259 #ifdef CONFIG_PCI_IOV
260 extern int pci_iov_init(struct pci_dev
*dev
);
261 extern void pci_iov_release(struct pci_dev
*dev
);
262 extern int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
,
263 enum pci_bar_type
*type
);
264 extern resource_size_t
pci_sriov_resource_alignment(struct pci_dev
*dev
,
266 extern void pci_restore_iov_state(struct pci_dev
*dev
);
267 extern int pci_iov_bus_range(struct pci_bus
*bus
);
270 static inline int pci_iov_init(struct pci_dev
*dev
)
274 static inline void pci_iov_release(struct pci_dev
*dev
)
278 static inline int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
,
279 enum pci_bar_type
*type
)
283 static inline void pci_restore_iov_state(struct pci_dev
*dev
)
286 static inline int pci_iov_bus_range(struct pci_bus
*bus
)
291 #endif /* CONFIG_PCI_IOV */
293 extern unsigned long pci_cardbus_resource_alignment(struct resource
*);
295 static inline resource_size_t
pci_resource_alignment(struct pci_dev
*dev
,
296 struct resource
*res
)
298 #ifdef CONFIG_PCI_IOV
299 int resno
= res
- dev
->resource
;
301 if (resno
>= PCI_IOV_RESOURCES
&& resno
<= PCI_IOV_RESOURCE_END
)
302 return pci_sriov_resource_alignment(dev
, resno
);
304 if (dev
->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS
)
305 return pci_cardbus_resource_alignment(res
);
306 return resource_alignment(res
);
309 extern void pci_enable_acs(struct pci_dev
*dev
);
311 struct pci_dev_reset_methods
{
314 int (*reset
)(struct pci_dev
*dev
, int probe
);
317 #ifdef CONFIG_PCI_QUIRKS
318 extern int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
);
320 static inline int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
326 #endif /* DRIVERS_PCI_H */