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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/pci/pci.h
4 #define PCI_FIND_CAP_TTL 48
6 #define PCI_VSEC_ID_INTEL_TBT 0x1234 /* Thunderbolt */
8 extern const unsigned char pcie_link_speed
[];
10 bool pcie_cap_has_lnkctl(const struct pci_dev
*dev
);
12 /* Functions internal to the PCI core code */
14 int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
15 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
16 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
17 static inline void pci_create_firmware_label_files(struct pci_dev
*pdev
)
19 static inline void pci_remove_firmware_label_files(struct pci_dev
*pdev
)
22 void pci_create_firmware_label_files(struct pci_dev
*pdev
);
23 void pci_remove_firmware_label_files(struct pci_dev
*pdev
);
25 void pci_cleanup_rom(struct pci_dev
*dev
);
28 PCI_MMAP_SYSFS
, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
29 PCI_MMAP_PROCFS
/* mmap on /proc/bus/pci/<BDF> */
31 int pci_mmap_fits(struct pci_dev
*pdev
, int resno
, struct vm_area_struct
*vmai
,
32 enum pci_mmap_api mmap_api
);
34 int pci_probe_reset_function(struct pci_dev
*dev
);
37 * struct pci_platform_pm_ops - Firmware PM callbacks
39 * @is_manageable: returns 'true' if given device is power manageable by the
42 * @set_state: invokes the platform firmware to set the device's power state
44 * @get_state: queries the platform firmware for a device's current power state
46 * @choose_state: returns PCI power state of given device preferred by the
47 * platform; to be used during system-wide transitions from a
48 * sleeping state to the working state and vice versa
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 * @need_resume: returns 'true' if the given device (which is currently
57 * suspended) needs to be resumed to be configured for system
60 * If given platform is generally capable of power managing PCI devices, all of
61 * these callbacks are mandatory.
63 struct pci_platform_pm_ops
{
64 bool (*is_manageable
)(struct pci_dev
*dev
);
65 int (*set_state
)(struct pci_dev
*dev
, pci_power_t state
);
66 pci_power_t (*get_state
)(struct pci_dev
*dev
);
67 pci_power_t (*choose_state
)(struct pci_dev
*dev
);
68 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
69 int (*run_wake
)(struct pci_dev
*dev
, bool enable
);
70 bool (*need_resume
)(struct pci_dev
*dev
);
73 int pci_set_platform_pm(const struct pci_platform_pm_ops
*ops
);
74 void pci_update_current_state(struct pci_dev
*dev
, pci_power_t state
);
75 void pci_power_up(struct pci_dev
*dev
);
76 void pci_disable_enabled_device(struct pci_dev
*dev
);
77 int pci_finish_runtime_suspend(struct pci_dev
*dev
);
78 int __pci_pme_wakeup(struct pci_dev
*dev
, void *ign
);
79 bool pci_dev_keep_suspended(struct pci_dev
*dev
);
80 void pci_dev_complete_resume(struct pci_dev
*pci_dev
);
81 void pci_config_pm_runtime_get(struct pci_dev
*dev
);
82 void pci_config_pm_runtime_put(struct pci_dev
*dev
);
83 void pci_pm_init(struct pci_dev
*dev
);
84 void pci_ea_init(struct pci_dev
*dev
);
85 void pci_allocate_cap_save_buffers(struct pci_dev
*dev
);
86 void pci_free_cap_save_buffers(struct pci_dev
*dev
);
87 bool pci_bridge_d3_possible(struct pci_dev
*dev
);
88 void pci_bridge_d3_update(struct pci_dev
*dev
);
90 static inline void pci_wakeup_event(struct pci_dev
*dev
)
92 /* Wait 100 ms before the system can be put into a sleep state. */
93 pm_wakeup_event(&dev
->dev
, 100);
96 static inline bool pci_has_subordinate(struct pci_dev
*pci_dev
)
98 return !!(pci_dev
->subordinate
);
101 static inline bool pci_power_manageable(struct pci_dev
*pci_dev
)
104 * Currently we allow normal PCI devices and PCI bridges transition
105 * into D3 if their bridge_d3 is set.
107 return !pci_has_subordinate(pci_dev
) || pci_dev
->bridge_d3
;
111 ssize_t (*read
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, void *buf
);
112 ssize_t (*write
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, const void *buf
);
113 int (*set_size
)(struct pci_dev
*dev
, size_t len
);
117 const struct pci_vpd_ops
*ops
;
118 struct bin_attribute
*attr
; /* descriptor for sysfs VPD entry */
127 int pci_vpd_init(struct pci_dev
*dev
);
128 void pci_vpd_release(struct pci_dev
*dev
);
130 /* PCI /proc functions */
131 #ifdef CONFIG_PROC_FS
132 int pci_proc_attach_device(struct pci_dev
*dev
);
133 int pci_proc_detach_device(struct pci_dev
*dev
);
134 int pci_proc_detach_bus(struct pci_bus
*bus
);
136 static inline int pci_proc_attach_device(struct pci_dev
*dev
) { return 0; }
137 static inline int pci_proc_detach_device(struct pci_dev
*dev
) { return 0; }
138 static inline int pci_proc_detach_bus(struct pci_bus
*bus
) { return 0; }
141 /* Functions for PCI Hotplug drivers to use */
142 int pci_hp_add_bridge(struct pci_dev
*dev
);
144 #ifdef HAVE_PCI_LEGACY
145 void pci_create_legacy_files(struct pci_bus
*bus
);
146 void pci_remove_legacy_files(struct pci_bus
*bus
);
148 static inline void pci_create_legacy_files(struct pci_bus
*bus
) { return; }
149 static inline void pci_remove_legacy_files(struct pci_bus
*bus
) { return; }
152 /* Lock for read/write access to pci device and bus lists */
153 extern struct rw_semaphore pci_bus_sem
;
155 extern raw_spinlock_t pci_lock
;
157 extern unsigned int pci_pm_d3_delay
;
159 #ifdef CONFIG_PCI_MSI
160 void pci_no_msi(void);
162 static inline void pci_no_msi(void) { }
165 static inline void pci_msi_set_enable(struct pci_dev
*dev
, int enable
)
169 pci_read_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, &control
);
170 control
&= ~PCI_MSI_FLAGS_ENABLE
;
172 control
|= PCI_MSI_FLAGS_ENABLE
;
173 pci_write_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, control
);
176 static inline void pci_msix_clear_and_set_ctrl(struct pci_dev
*dev
, u16 clear
, u16 set
)
180 pci_read_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, &ctrl
);
183 pci_write_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, ctrl
);
186 void pci_realloc_get_opt(char *);
188 static inline int pci_no_d1d2(struct pci_dev
*dev
)
190 unsigned int parent_dstates
= 0;
193 parent_dstates
= dev
->bus
->self
->no_d1d2
;
194 return (dev
->no_d1d2
|| parent_dstates
);
197 extern const struct attribute_group
*pci_dev_groups
[];
198 extern const struct attribute_group
*pcibus_groups
[];
199 extern struct device_type pci_dev_type
;
200 extern const struct attribute_group
*pci_bus_groups
[];
204 * pci_match_one_device - Tell if a PCI device structure has a matching
205 * PCI device id structure
206 * @id: single PCI device id structure to match
207 * @dev: the PCI device structure to match against
209 * Returns the matching pci_device_id structure or %NULL if there is no match.
211 static inline const struct pci_device_id
*
212 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
214 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
215 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
216 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
217 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
218 !((id
->class ^ dev
->class) & id
->class_mask
))
223 /* PCI slot sysfs helper code */
224 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
226 extern struct kset
*pci_slots_kset
;
228 struct pci_slot_attribute
{
229 struct attribute attr
;
230 ssize_t (*show
)(struct pci_slot
*, char *);
231 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
233 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
236 pci_bar_unknown
, /* Standard PCI BAR probe */
237 pci_bar_io
, /* An io port BAR */
238 pci_bar_mem32
, /* A 32-bit memory BAR */
239 pci_bar_mem64
, /* A 64-bit memory BAR */
242 bool pci_bus_read_dev_vendor_id(struct pci_bus
*bus
, int devfn
, u32
*pl
,
244 int pci_setup_device(struct pci_dev
*dev
);
245 int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
246 struct resource
*res
, unsigned int reg
);
247 void pci_configure_ari(struct pci_dev
*dev
);
248 void __pci_bus_size_bridges(struct pci_bus
*bus
,
249 struct list_head
*realloc_head
);
250 void __pci_bus_assign_resources(const struct pci_bus
*bus
,
251 struct list_head
*realloc_head
,
252 struct list_head
*fail_head
);
253 bool pci_bus_clip_resource(struct pci_dev
*dev
, int idx
);
255 void pci_reassigndev_resource_alignment(struct pci_dev
*dev
);
256 void pci_disable_bridge_window(struct pci_dev
*dev
);
258 /* Single Root I/O Virtualization */
260 int pos
; /* capability position */
261 int nres
; /* number of resources */
262 u32 cap
; /* SR-IOV Capabilities */
263 u16 ctrl
; /* SR-IOV Control */
264 u16 total_VFs
; /* total VFs associated with the PF */
265 u16 initial_VFs
; /* initial VFs associated with the PF */
266 u16 num_VFs
; /* number of VFs available */
267 u16 offset
; /* first VF Routing ID offset */
268 u16 stride
; /* following VF stride */
269 u32 pgsz
; /* page size for BAR alignment */
270 u8 link
; /* Function Dependency Link */
271 u8 max_VF_buses
; /* max buses consumed by VFs */
272 u16 driver_max_VFs
; /* max num VFs driver supports */
273 struct pci_dev
*dev
; /* lowest numbered PF */
274 struct pci_dev
*self
; /* this PF */
275 struct mutex lock
; /* lock for setting sriov_numvfs in sysfs */
276 resource_size_t barsz
[PCI_SRIOV_NUM_BARS
]; /* VF BAR size */
277 bool drivers_autoprobe
; /* auto probing of VFs by driver */
280 /* pci_dev priv_flags */
281 #define PCI_DEV_DISCONNECTED 0
283 static inline int pci_dev_set_disconnected(struct pci_dev
*dev
, void *unused
)
285 set_bit(PCI_DEV_DISCONNECTED
, &dev
->priv_flags
);
289 static inline bool pci_dev_is_disconnected(const struct pci_dev
*dev
)
291 return test_bit(PCI_DEV_DISCONNECTED
, &dev
->priv_flags
);
294 #ifdef CONFIG_PCI_ATS
295 void pci_restore_ats_state(struct pci_dev
*dev
);
297 static inline void pci_restore_ats_state(struct pci_dev
*dev
)
300 #endif /* CONFIG_PCI_ATS */
302 #ifdef CONFIG_PCI_IOV
303 int pci_iov_init(struct pci_dev
*dev
);
304 void pci_iov_release(struct pci_dev
*dev
);
305 void pci_iov_update_resource(struct pci_dev
*dev
, int resno
);
306 resource_size_t
pci_sriov_resource_alignment(struct pci_dev
*dev
, int resno
);
307 void pci_restore_iov_state(struct pci_dev
*dev
);
308 int pci_iov_bus_range(struct pci_bus
*bus
);
311 static inline int pci_iov_init(struct pci_dev
*dev
)
315 static inline void pci_iov_release(struct pci_dev
*dev
)
319 static inline void pci_restore_iov_state(struct pci_dev
*dev
)
322 static inline int pci_iov_bus_range(struct pci_bus
*bus
)
327 #endif /* CONFIG_PCI_IOV */
329 unsigned long pci_cardbus_resource_alignment(struct resource
*);
331 static inline resource_size_t
pci_resource_alignment(struct pci_dev
*dev
,
332 struct resource
*res
)
334 #ifdef CONFIG_PCI_IOV
335 int resno
= res
- dev
->resource
;
337 if (resno
>= PCI_IOV_RESOURCES
&& resno
<= PCI_IOV_RESOURCE_END
)
338 return pci_sriov_resource_alignment(dev
, resno
);
340 if (dev
->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS
)
341 return pci_cardbus_resource_alignment(res
);
342 return resource_alignment(res
);
345 void pci_enable_acs(struct pci_dev
*dev
);
347 #ifdef CONFIG_PCIE_PTM
348 void pci_ptm_init(struct pci_dev
*dev
);
350 static inline void pci_ptm_init(struct pci_dev
*dev
) { }
353 struct pci_dev_reset_methods
{
356 int (*reset
)(struct pci_dev
*dev
, int probe
);
359 #ifdef CONFIG_PCI_QUIRKS
360 int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
);
362 static inline int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
368 #if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
369 int acpi_get_rc_resources(struct device
*dev
, const char *hid
, u16 segment
,
370 struct resource
*res
);
373 #endif /* DRIVERS_PCI_H */