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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/pci/pci.h
4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 extern const unsigned char pcie_link_speed
[];
9 bool pcie_cap_has_lnkctl(const struct pci_dev
*dev
);
11 /* Functions internal to the PCI core code */
13 int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
14 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
15 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
16 static inline void pci_create_firmware_label_files(struct pci_dev
*pdev
)
18 static inline void pci_remove_firmware_label_files(struct pci_dev
*pdev
)
21 void pci_create_firmware_label_files(struct pci_dev
*pdev
);
22 void pci_remove_firmware_label_files(struct pci_dev
*pdev
);
24 void pci_cleanup_rom(struct pci_dev
*dev
);
27 PCI_MMAP_SYSFS
, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
28 PCI_MMAP_PROCFS
/* mmap on /proc/bus/pci/<BDF> */
30 int pci_mmap_fits(struct pci_dev
*pdev
, int resno
, 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 * @sleep_wake: enables/disables the system wake up capability of given device
49 * @run_wake: enables/disables the platform to generate run-time wake-up events
50 * for given device (the device's wake-up capability has to be
51 * enabled by @sleep_wake for this feature to work)
53 * @need_resume: returns 'true' if the given device (which is currently
54 * suspended) needs to be resumed to be configured for system
57 * If given platform is generally capable of power managing PCI devices, all of
58 * these callbacks are mandatory.
60 struct pci_platform_pm_ops
{
61 bool (*is_manageable
)(struct pci_dev
*dev
);
62 int (*set_state
)(struct pci_dev
*dev
, pci_power_t state
);
63 pci_power_t (*choose_state
)(struct pci_dev
*dev
);
64 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
65 int (*run_wake
)(struct pci_dev
*dev
, bool enable
);
66 bool (*need_resume
)(struct pci_dev
*dev
);
69 int pci_set_platform_pm(struct pci_platform_pm_ops
*ops
);
70 void pci_update_current_state(struct pci_dev
*dev
, pci_power_t state
);
71 void pci_power_up(struct pci_dev
*dev
);
72 void pci_disable_enabled_device(struct pci_dev
*dev
);
73 int pci_finish_runtime_suspend(struct pci_dev
*dev
);
74 int __pci_pme_wakeup(struct pci_dev
*dev
, void *ign
);
75 bool pci_dev_keep_suspended(struct pci_dev
*dev
);
76 void pci_config_pm_runtime_get(struct pci_dev
*dev
);
77 void pci_config_pm_runtime_put(struct pci_dev
*dev
);
78 void pci_pm_init(struct pci_dev
*dev
);
79 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_has_subordinate(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 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 int pci_proc_attach_device(struct pci_dev
*dev
);
115 int pci_proc_detach_device(struct pci_dev
*dev
);
116 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 void pci_create_legacy_files(struct pci_bus
*bus
);
128 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 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 static inline void pci_msi_set_enable(struct pci_dev
*dev
, int enable
)
153 pci_read_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, &control
);
154 control
&= ~PCI_MSI_FLAGS_ENABLE
;
156 control
|= PCI_MSI_FLAGS_ENABLE
;
157 pci_write_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, control
);
160 static inline void pci_msix_clear_and_set_ctrl(struct pci_dev
*dev
, u16 clear
, u16 set
)
164 pci_read_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, &ctrl
);
167 pci_write_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, ctrl
);
170 void pci_realloc_get_opt(char *);
172 static inline int pci_no_d1d2(struct pci_dev
*dev
)
174 unsigned int parent_dstates
= 0;
177 parent_dstates
= dev
->bus
->self
->no_d1d2
;
178 return (dev
->no_d1d2
|| parent_dstates
);
181 extern const struct attribute_group
*pci_dev_groups
[];
182 extern const struct attribute_group
*pcibus_groups
[];
183 extern struct device_type pci_dev_type
;
184 extern const struct attribute_group
*pci_bus_groups
[];
188 * pci_match_one_device - Tell if a PCI device structure has a matching
189 * PCI device id structure
190 * @id: single PCI device id structure to match
191 * @dev: the PCI device structure to match against
193 * Returns the matching pci_device_id structure or %NULL if there is no match.
195 static inline const struct pci_device_id
*
196 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
198 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
199 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
200 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
201 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
202 !((id
->class ^ dev
->class) & id
->class_mask
))
207 /* PCI slot sysfs helper code */
208 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
210 extern struct kset
*pci_slots_kset
;
212 struct pci_slot_attribute
{
213 struct attribute attr
;
214 ssize_t (*show
)(struct pci_slot
*, char *);
215 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
217 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
220 pci_bar_unknown
, /* Standard PCI BAR probe */
221 pci_bar_io
, /* An io port BAR */
222 pci_bar_mem32
, /* A 32-bit memory BAR */
223 pci_bar_mem64
, /* A 64-bit memory BAR */
226 bool pci_bus_read_dev_vendor_id(struct pci_bus
*bus
, int devfn
, u32
*pl
,
228 int pci_setup_device(struct pci_dev
*dev
);
229 int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
230 struct resource
*res
, unsigned int reg
);
231 int pci_resource_bar(struct pci_dev
*dev
, int resno
, enum pci_bar_type
*type
);
232 void pci_configure_ari(struct pci_dev
*dev
);
233 void __pci_bus_size_bridges(struct pci_bus
*bus
,
234 struct list_head
*realloc_head
);
235 void __pci_bus_assign_resources(const struct pci_bus
*bus
,
236 struct list_head
*realloc_head
,
237 struct list_head
*fail_head
);
238 bool pci_bus_clip_resource(struct pci_dev
*dev
, int idx
);
240 void pci_reassigndev_resource_alignment(struct pci_dev
*dev
);
241 void pci_disable_bridge_window(struct pci_dev
*dev
);
243 /* Single Root I/O Virtualization */
245 int pos
; /* capability position */
246 int nres
; /* number of resources */
247 u32 cap
; /* SR-IOV Capabilities */
248 u16 ctrl
; /* SR-IOV Control */
249 u16 total_VFs
; /* total VFs associated with the PF */
250 u16 initial_VFs
; /* initial VFs associated with the PF */
251 u16 num_VFs
; /* number of VFs available */
252 u16 offset
; /* first VF Routing ID offset */
253 u16 stride
; /* following VF stride */
254 u32 pgsz
; /* page size for BAR alignment */
255 u8 link
; /* Function Dependency Link */
256 u8 max_VF_buses
; /* max buses consumed by VFs */
257 u16 driver_max_VFs
; /* max num VFs driver supports */
258 struct pci_dev
*dev
; /* lowest numbered PF */
259 struct pci_dev
*self
; /* this PF */
260 struct mutex lock
; /* lock for VF bus */
261 resource_size_t barsz
[PCI_SRIOV_NUM_BARS
]; /* VF BAR size */
264 #ifdef CONFIG_PCI_ATS
265 void pci_restore_ats_state(struct pci_dev
*dev
);
267 static inline void pci_restore_ats_state(struct pci_dev
*dev
)
270 #endif /* CONFIG_PCI_ATS */
272 #ifdef CONFIG_PCI_IOV
273 int pci_iov_init(struct pci_dev
*dev
);
274 void pci_iov_release(struct pci_dev
*dev
);
275 int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
);
276 resource_size_t
pci_sriov_resource_alignment(struct pci_dev
*dev
, int resno
);
277 void pci_restore_iov_state(struct pci_dev
*dev
);
278 int pci_iov_bus_range(struct pci_bus
*bus
);
281 static inline int pci_iov_init(struct pci_dev
*dev
)
285 static inline void pci_iov_release(struct pci_dev
*dev
)
289 static inline int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
)
293 static inline void pci_restore_iov_state(struct pci_dev
*dev
)
296 static inline int pci_iov_bus_range(struct pci_bus
*bus
)
301 #endif /* CONFIG_PCI_IOV */
303 unsigned long pci_cardbus_resource_alignment(struct resource
*);
305 static inline resource_size_t
pci_resource_alignment(struct pci_dev
*dev
,
306 struct resource
*res
)
308 #ifdef CONFIG_PCI_IOV
309 int resno
= res
- dev
->resource
;
311 if (resno
>= PCI_IOV_RESOURCES
&& resno
<= PCI_IOV_RESOURCE_END
)
312 return pci_sriov_resource_alignment(dev
, resno
);
314 if (dev
->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS
)
315 return pci_cardbus_resource_alignment(res
);
316 return resource_alignment(res
);
319 void pci_enable_acs(struct pci_dev
*dev
);
321 struct pci_dev_reset_methods
{
324 int (*reset
)(struct pci_dev
*dev
, int probe
);
327 #ifdef CONFIG_PCI_QUIRKS
328 int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
);
330 static inline int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
336 struct pci_host_bridge
*pci_find_host_bridge(struct pci_bus
*bus
);
338 #endif /* DRIVERS_PCI_H */