4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 extern const unsigned char pcie_link_speed
[];
9 /* Functions internal to the PCI core code */
11 int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
12 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
13 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
14 static inline void pci_create_firmware_label_files(struct pci_dev
*pdev
)
16 static inline void pci_remove_firmware_label_files(struct pci_dev
*pdev
)
19 void pci_create_firmware_label_files(struct pci_dev
*pdev
);
20 void pci_remove_firmware_label_files(struct pci_dev
*pdev
);
22 void pci_cleanup_rom(struct pci_dev
*dev
);
25 PCI_MMAP_SYSFS
, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
26 PCI_MMAP_PROCFS
/* mmap on /proc/bus/pci/<BDF> */
28 int pci_mmap_fits(struct pci_dev
*pdev
, int resno
, struct vm_area_struct
*vmai
,
29 enum pci_mmap_api mmap_api
);
31 int pci_probe_reset_function(struct pci_dev
*dev
);
34 * struct pci_platform_pm_ops - Firmware PM callbacks
36 * @is_manageable: returns 'true' if given device is power manageable by the
39 * @set_state: invokes the platform firmware to set the device's power state
41 * @choose_state: returns PCI power state of given device preferred by the
42 * platform; to be used during system-wide transitions from a
43 * sleeping state to the working state and vice versa
45 * @sleep_wake: enables/disables the system wake up capability of given device
47 * @run_wake: enables/disables the platform to generate run-time wake-up events
48 * for given device (the device's wake-up capability has to be
49 * enabled by @sleep_wake for this feature to work)
51 * If given platform is generally capable of power managing PCI devices, all of
52 * these callbacks are mandatory.
54 struct pci_platform_pm_ops
{
55 bool (*is_manageable
)(struct pci_dev
*dev
);
56 int (*set_state
)(struct pci_dev
*dev
, pci_power_t state
);
57 pci_power_t (*choose_state
)(struct pci_dev
*dev
);
58 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
59 int (*run_wake
)(struct pci_dev
*dev
, bool enable
);
62 int pci_set_platform_pm(struct pci_platform_pm_ops
*ops
);
63 void pci_update_current_state(struct pci_dev
*dev
, pci_power_t state
);
64 void pci_power_up(struct pci_dev
*dev
);
65 void pci_disable_enabled_device(struct pci_dev
*dev
);
66 int pci_finish_runtime_suspend(struct pci_dev
*dev
);
67 int __pci_pme_wakeup(struct pci_dev
*dev
, void *ign
);
68 void pci_config_pm_runtime_get(struct pci_dev
*dev
);
69 void pci_config_pm_runtime_put(struct pci_dev
*dev
);
70 void pci_pm_init(struct pci_dev
*dev
);
71 void pci_allocate_cap_save_buffers(struct pci_dev
*dev
);
72 void pci_free_cap_save_buffers(struct pci_dev
*dev
);
74 static inline void pci_wakeup_event(struct pci_dev
*dev
)
76 /* Wait 100 ms before the system can be put into a sleep state. */
77 pm_wakeup_event(&dev
->dev
, 100);
80 static inline bool pci_has_subordinate(struct pci_dev
*pci_dev
)
82 return !!(pci_dev
->subordinate
);
86 ssize_t (*read
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, void *buf
);
87 ssize_t (*write
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, const void *buf
);
88 void (*release
)(struct pci_dev
*dev
);
93 const struct pci_vpd_ops
*ops
;
94 struct bin_attribute
*attr
; /* descriptor for sysfs VPD entry */
97 int pci_vpd_pci22_init(struct pci_dev
*dev
);
98 static inline void pci_vpd_release(struct pci_dev
*dev
)
101 dev
->vpd
->ops
->release(dev
);
104 /* PCI /proc functions */
105 #ifdef CONFIG_PROC_FS
106 int pci_proc_attach_device(struct pci_dev
*dev
);
107 int pci_proc_detach_device(struct pci_dev
*dev
);
108 int pci_proc_detach_bus(struct pci_bus
*bus
);
110 static inline int pci_proc_attach_device(struct pci_dev
*dev
) { return 0; }
111 static inline int pci_proc_detach_device(struct pci_dev
*dev
) { return 0; }
112 static inline int pci_proc_detach_bus(struct pci_bus
*bus
) { return 0; }
115 /* Functions for PCI Hotplug drivers to use */
116 int pci_hp_add_bridge(struct pci_dev
*dev
);
118 #ifdef HAVE_PCI_LEGACY
119 void pci_create_legacy_files(struct pci_bus
*bus
);
120 void pci_remove_legacy_files(struct pci_bus
*bus
);
122 static inline void pci_create_legacy_files(struct pci_bus
*bus
) { return; }
123 static inline void pci_remove_legacy_files(struct pci_bus
*bus
) { return; }
126 /* Lock for read/write access to pci device and bus lists */
127 extern struct rw_semaphore pci_bus_sem
;
129 extern raw_spinlock_t pci_lock
;
131 extern unsigned int pci_pm_d3_delay
;
133 #ifdef CONFIG_PCI_MSI
134 void pci_no_msi(void);
135 void pci_msi_init_pci_dev(struct pci_dev
*dev
);
137 static inline void pci_no_msi(void) { }
138 static inline void pci_msi_init_pci_dev(struct pci_dev
*dev
) { }
141 void pci_realloc_get_opt(char *);
143 static inline int pci_no_d1d2(struct pci_dev
*dev
)
145 unsigned int parent_dstates
= 0;
148 parent_dstates
= dev
->bus
->self
->no_d1d2
;
149 return (dev
->no_d1d2
|| parent_dstates
);
152 extern const struct attribute_group
*pci_dev_groups
[];
153 extern const struct attribute_group
*pcibus_groups
[];
154 extern struct device_type pci_dev_type
;
155 extern const struct attribute_group
*pci_bus_groups
[];
159 * pci_match_one_device - Tell if a PCI device structure has a matching
160 * PCI device id structure
161 * @id: single PCI device id structure to match
162 * @dev: the PCI device structure to match against
164 * Returns the matching pci_device_id structure or %NULL if there is no match.
166 static inline const struct pci_device_id
*
167 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
169 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
170 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
171 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
172 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
173 !((id
->class ^ dev
->class) & id
->class_mask
))
178 /* PCI slot sysfs helper code */
179 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
181 extern struct kset
*pci_slots_kset
;
183 struct pci_slot_attribute
{
184 struct attribute attr
;
185 ssize_t (*show
)(struct pci_slot
*, char *);
186 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
188 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
191 pci_bar_unknown
, /* Standard PCI BAR probe */
192 pci_bar_io
, /* An io port BAR */
193 pci_bar_mem32
, /* A 32-bit memory BAR */
194 pci_bar_mem64
, /* A 64-bit memory BAR */
197 bool pci_bus_read_dev_vendor_id(struct pci_bus
*bus
, int devfn
, u32
*pl
,
199 int pci_setup_device(struct pci_dev
*dev
);
200 int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
201 struct resource
*res
, unsigned int reg
);
202 int pci_resource_bar(struct pci_dev
*dev
, int resno
, enum pci_bar_type
*type
);
203 void pci_configure_ari(struct pci_dev
*dev
);
204 void __pci_bus_size_bridges(struct pci_bus
*bus
,
205 struct list_head
*realloc_head
);
206 void __pci_bus_assign_resources(const struct pci_bus
*bus
,
207 struct list_head
*realloc_head
,
208 struct list_head
*fail_head
);
211 * pci_ari_enabled - query ARI forwarding status
214 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
216 static inline int pci_ari_enabled(struct pci_bus
*bus
)
218 return bus
->self
&& bus
->self
->ari_enabled
;
221 void pci_reassigndev_resource_alignment(struct pci_dev
*dev
);
222 void pci_disable_bridge_window(struct pci_dev
*dev
);
224 /* Single Root I/O Virtualization */
226 int pos
; /* capability position */
227 int nres
; /* number of resources */
228 u32 cap
; /* SR-IOV Capabilities */
229 u16 ctrl
; /* SR-IOV Control */
230 u16 total_VFs
; /* total VFs associated with the PF */
231 u16 initial_VFs
; /* initial VFs associated with the PF */
232 u16 num_VFs
; /* number of VFs available */
233 u16 offset
; /* first VF Routing ID offset */
234 u16 stride
; /* following VF stride */
235 u32 pgsz
; /* page size for BAR alignment */
236 u8 link
; /* Function Dependency Link */
237 u16 driver_max_VFs
; /* max num VFs driver supports */
238 struct pci_dev
*dev
; /* lowest numbered PF */
239 struct pci_dev
*self
; /* this PF */
240 struct mutex lock
; /* lock for VF bus */
243 #ifdef CONFIG_PCI_ATS
244 void pci_restore_ats_state(struct pci_dev
*dev
);
246 static inline void pci_restore_ats_state(struct pci_dev
*dev
)
249 #endif /* CONFIG_PCI_ATS */
251 #ifdef CONFIG_PCI_IOV
252 int pci_iov_init(struct pci_dev
*dev
);
253 void pci_iov_release(struct pci_dev
*dev
);
254 int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
,
255 enum pci_bar_type
*type
);
256 resource_size_t
pci_sriov_resource_alignment(struct pci_dev
*dev
, int resno
);
257 void pci_restore_iov_state(struct pci_dev
*dev
);
258 int pci_iov_bus_range(struct pci_bus
*bus
);
261 static inline int pci_iov_init(struct pci_dev
*dev
)
265 static inline void pci_iov_release(struct pci_dev
*dev
)
269 static inline int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
,
270 enum pci_bar_type
*type
)
274 static inline void pci_restore_iov_state(struct pci_dev
*dev
)
277 static inline int pci_iov_bus_range(struct pci_bus
*bus
)
282 #endif /* CONFIG_PCI_IOV */
284 unsigned long pci_cardbus_resource_alignment(struct resource
*);
286 static inline resource_size_t
pci_resource_alignment(struct pci_dev
*dev
,
287 struct resource
*res
)
289 #ifdef CONFIG_PCI_IOV
290 int resno
= res
- dev
->resource
;
292 if (resno
>= PCI_IOV_RESOURCES
&& resno
<= PCI_IOV_RESOURCE_END
)
293 return pci_sriov_resource_alignment(dev
, resno
);
295 if (dev
->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS
)
296 return pci_cardbus_resource_alignment(res
);
297 return resource_alignment(res
);
300 void pci_enable_acs(struct pci_dev
*dev
);
302 struct pci_dev_reset_methods
{
305 int (*reset
)(struct pci_dev
*dev
, int probe
);
308 #ifdef CONFIG_PCI_QUIRKS
309 int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
);
311 static inline int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
317 #endif /* DRIVERS_PCI_H */