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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/pci/pci.h
4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 #define PCI_FIND_CAP_TTL 48
9 extern const unsigned char pcie_link_speed
[];
11 bool pcie_cap_has_lnkctl(const struct pci_dev
*dev
);
13 /* Functions internal to the PCI core code */
15 int pci_create_sysfs_dev_files(struct pci_dev
*pdev
);
16 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
);
17 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
18 static inline void pci_create_firmware_label_files(struct pci_dev
*pdev
)
20 static inline void pci_remove_firmware_label_files(struct pci_dev
*pdev
)
23 void pci_create_firmware_label_files(struct pci_dev
*pdev
);
24 void pci_remove_firmware_label_files(struct pci_dev
*pdev
);
26 void pci_cleanup_rom(struct pci_dev
*dev
);
29 PCI_MMAP_SYSFS
, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
30 PCI_MMAP_PROCFS
/* mmap on /proc/bus/pci/<BDF> */
32 int pci_mmap_fits(struct pci_dev
*pdev
, int resno
, struct vm_area_struct
*vmai
,
33 enum pci_mmap_api mmap_api
);
35 int pci_probe_reset_function(struct pci_dev
*dev
);
38 * struct pci_platform_pm_ops - Firmware PM callbacks
40 * @is_manageable: returns 'true' if given device is power manageable by the
43 * @set_state: invokes the platform firmware to set the device's power state
45 * @choose_state: returns PCI power state of given device preferred by the
46 * platform; to be used during system-wide transitions from a
47 * sleeping state to the working state and vice versa
49 * @sleep_wake: enables/disables the system wake up capability of given device
51 * @run_wake: enables/disables the platform to generate run-time wake-up events
52 * for given device (the device's wake-up capability has to be
53 * enabled by @sleep_wake for this feature to work)
55 * @need_resume: returns 'true' if the given device (which is currently
56 * suspended) needs to be resumed to be configured for system
59 * If given platform is generally capable of power managing PCI devices, all of
60 * these callbacks are mandatory.
62 struct pci_platform_pm_ops
{
63 bool (*is_manageable
)(struct pci_dev
*dev
);
64 int (*set_state
)(struct pci_dev
*dev
, pci_power_t state
);
65 pci_power_t (*choose_state
)(struct pci_dev
*dev
);
66 int (*sleep_wake
)(struct pci_dev
*dev
, bool enable
);
67 int (*run_wake
)(struct pci_dev
*dev
, bool enable
);
68 bool (*need_resume
)(struct pci_dev
*dev
);
71 int pci_set_platform_pm(const struct pci_platform_pm_ops
*ops
);
72 void pci_update_current_state(struct pci_dev
*dev
, pci_power_t state
);
73 void pci_power_up(struct pci_dev
*dev
);
74 void pci_disable_enabled_device(struct pci_dev
*dev
);
75 int pci_finish_runtime_suspend(struct pci_dev
*dev
);
76 int __pci_pme_wakeup(struct pci_dev
*dev
, void *ign
);
77 bool pci_dev_keep_suspended(struct pci_dev
*dev
);
78 void pci_dev_complete_resume(struct pci_dev
*pci_dev
);
79 void pci_config_pm_runtime_get(struct pci_dev
*dev
);
80 void pci_config_pm_runtime_put(struct pci_dev
*dev
);
81 void pci_pm_init(struct pci_dev
*dev
);
82 void pci_ea_init(struct pci_dev
*dev
);
83 void pci_allocate_cap_save_buffers(struct pci_dev
*dev
);
84 void pci_free_cap_save_buffers(struct pci_dev
*dev
);
86 static inline void pci_wakeup_event(struct pci_dev
*dev
)
88 /* Wait 100 ms before the system can be put into a sleep state. */
89 pm_wakeup_event(&dev
->dev
, 100);
92 static inline bool pci_has_subordinate(struct pci_dev
*pci_dev
)
94 return !!(pci_dev
->subordinate
);
98 ssize_t (*read
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, void *buf
);
99 ssize_t (*write
)(struct pci_dev
*dev
, loff_t pos
, size_t count
, const void *buf
);
100 int (*set_size
)(struct pci_dev
*dev
, size_t len
);
104 const struct pci_vpd_ops
*ops
;
105 struct bin_attribute
*attr
; /* descriptor for sysfs VPD entry */
114 int pci_vpd_init(struct pci_dev
*dev
);
115 void pci_vpd_release(struct pci_dev
*dev
);
117 /* PCI /proc functions */
118 #ifdef CONFIG_PROC_FS
119 int pci_proc_attach_device(struct pci_dev
*dev
);
120 int pci_proc_detach_device(struct pci_dev
*dev
);
121 int pci_proc_detach_bus(struct pci_bus
*bus
);
123 static inline int pci_proc_attach_device(struct pci_dev
*dev
) { return 0; }
124 static inline int pci_proc_detach_device(struct pci_dev
*dev
) { return 0; }
125 static inline int pci_proc_detach_bus(struct pci_bus
*bus
) { return 0; }
128 /* Functions for PCI Hotplug drivers to use */
129 int pci_hp_add_bridge(struct pci_dev
*dev
);
131 #ifdef HAVE_PCI_LEGACY
132 void pci_create_legacy_files(struct pci_bus
*bus
);
133 void pci_remove_legacy_files(struct pci_bus
*bus
);
135 static inline void pci_create_legacy_files(struct pci_bus
*bus
) { return; }
136 static inline void pci_remove_legacy_files(struct pci_bus
*bus
) { return; }
139 /* Lock for read/write access to pci device and bus lists */
140 extern struct rw_semaphore pci_bus_sem
;
142 extern raw_spinlock_t pci_lock
;
144 extern unsigned int pci_pm_d3_delay
;
146 #ifdef CONFIG_PCI_MSI
147 void pci_no_msi(void);
149 static inline void pci_no_msi(void) { }
152 static inline void pci_msi_set_enable(struct pci_dev
*dev
, int enable
)
156 pci_read_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, &control
);
157 control
&= ~PCI_MSI_FLAGS_ENABLE
;
159 control
|= PCI_MSI_FLAGS_ENABLE
;
160 pci_write_config_word(dev
, dev
->msi_cap
+ PCI_MSI_FLAGS
, control
);
163 static inline void pci_msix_clear_and_set_ctrl(struct pci_dev
*dev
, u16 clear
, u16 set
)
167 pci_read_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, &ctrl
);
170 pci_write_config_word(dev
, dev
->msix_cap
+ PCI_MSIX_FLAGS
, ctrl
);
173 void pci_realloc_get_opt(char *);
175 static inline int pci_no_d1d2(struct pci_dev
*dev
)
177 unsigned int parent_dstates
= 0;
180 parent_dstates
= dev
->bus
->self
->no_d1d2
;
181 return (dev
->no_d1d2
|| parent_dstates
);
184 extern const struct attribute_group
*pci_dev_groups
[];
185 extern const struct attribute_group
*pcibus_groups
[];
186 extern struct device_type pci_dev_type
;
187 extern const struct attribute_group
*pci_bus_groups
[];
191 * pci_match_one_device - Tell if a PCI device structure has a matching
192 * PCI device id structure
193 * @id: single PCI device id structure to match
194 * @dev: the PCI device structure to match against
196 * Returns the matching pci_device_id structure or %NULL if there is no match.
198 static inline const struct pci_device_id
*
199 pci_match_one_device(const struct pci_device_id
*id
, const struct pci_dev
*dev
)
201 if ((id
->vendor
== PCI_ANY_ID
|| id
->vendor
== dev
->vendor
) &&
202 (id
->device
== PCI_ANY_ID
|| id
->device
== dev
->device
) &&
203 (id
->subvendor
== PCI_ANY_ID
|| id
->subvendor
== dev
->subsystem_vendor
) &&
204 (id
->subdevice
== PCI_ANY_ID
|| id
->subdevice
== dev
->subsystem_device
) &&
205 !((id
->class ^ dev
->class) & id
->class_mask
))
210 /* PCI slot sysfs helper code */
211 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
213 extern struct kset
*pci_slots_kset
;
215 struct pci_slot_attribute
{
216 struct attribute attr
;
217 ssize_t (*show
)(struct pci_slot
*, char *);
218 ssize_t (*store
)(struct pci_slot
*, const char *, size_t);
220 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
223 pci_bar_unknown
, /* Standard PCI BAR probe */
224 pci_bar_io
, /* An io port BAR */
225 pci_bar_mem32
, /* A 32-bit memory BAR */
226 pci_bar_mem64
, /* A 64-bit memory BAR */
229 bool pci_bus_read_dev_vendor_id(struct pci_bus
*bus
, int devfn
, u32
*pl
,
231 int pci_setup_device(struct pci_dev
*dev
);
232 int __pci_read_base(struct pci_dev
*dev
, enum pci_bar_type type
,
233 struct resource
*res
, unsigned int reg
);
234 int pci_resource_bar(struct pci_dev
*dev
, int resno
, enum pci_bar_type
*type
);
235 void pci_configure_ari(struct pci_dev
*dev
);
236 void __pci_bus_size_bridges(struct pci_bus
*bus
,
237 struct list_head
*realloc_head
);
238 void __pci_bus_assign_resources(const struct pci_bus
*bus
,
239 struct list_head
*realloc_head
,
240 struct list_head
*fail_head
);
241 bool pci_bus_clip_resource(struct pci_dev
*dev
, int idx
);
243 void pci_reassigndev_resource_alignment(struct pci_dev
*dev
);
244 void pci_disable_bridge_window(struct pci_dev
*dev
);
246 /* Single Root I/O Virtualization */
248 int pos
; /* capability position */
249 int nres
; /* number of resources */
250 u32 cap
; /* SR-IOV Capabilities */
251 u16 ctrl
; /* SR-IOV Control */
252 u16 total_VFs
; /* total VFs associated with the PF */
253 u16 initial_VFs
; /* initial VFs associated with the PF */
254 u16 num_VFs
; /* number of VFs available */
255 u16 offset
; /* first VF Routing ID offset */
256 u16 stride
; /* following VF stride */
257 u32 pgsz
; /* page size for BAR alignment */
258 u8 link
; /* Function Dependency Link */
259 u8 max_VF_buses
; /* max buses consumed by VFs */
260 u16 driver_max_VFs
; /* max num VFs driver supports */
261 struct pci_dev
*dev
; /* lowest numbered PF */
262 struct pci_dev
*self
; /* this PF */
263 struct mutex lock
; /* lock for VF bus */
264 resource_size_t barsz
[PCI_SRIOV_NUM_BARS
]; /* VF BAR size */
267 #ifdef CONFIG_PCI_ATS
268 void pci_restore_ats_state(struct pci_dev
*dev
);
270 static inline void pci_restore_ats_state(struct pci_dev
*dev
)
273 #endif /* CONFIG_PCI_ATS */
275 #ifdef CONFIG_PCI_IOV
276 int pci_iov_init(struct pci_dev
*dev
);
277 void pci_iov_release(struct pci_dev
*dev
);
278 int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
);
279 resource_size_t
pci_sriov_resource_alignment(struct pci_dev
*dev
, int resno
);
280 void pci_restore_iov_state(struct pci_dev
*dev
);
281 int pci_iov_bus_range(struct pci_bus
*bus
);
284 static inline int pci_iov_init(struct pci_dev
*dev
)
288 static inline void pci_iov_release(struct pci_dev
*dev
)
292 static inline int pci_iov_resource_bar(struct pci_dev
*dev
, int resno
)
296 static inline void pci_restore_iov_state(struct pci_dev
*dev
)
299 static inline int pci_iov_bus_range(struct pci_bus
*bus
)
304 #endif /* CONFIG_PCI_IOV */
306 unsigned long pci_cardbus_resource_alignment(struct resource
*);
308 static inline resource_size_t
pci_resource_alignment(struct pci_dev
*dev
,
309 struct resource
*res
)
311 #ifdef CONFIG_PCI_IOV
312 int resno
= res
- dev
->resource
;
314 if (resno
>= PCI_IOV_RESOURCES
&& resno
<= PCI_IOV_RESOURCE_END
)
315 return pci_sriov_resource_alignment(dev
, resno
);
317 if (dev
->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS
)
318 return pci_cardbus_resource_alignment(res
);
319 return resource_alignment(res
);
322 void pci_enable_acs(struct pci_dev
*dev
);
324 struct pci_dev_reset_methods
{
327 int (*reset
)(struct pci_dev
*dev
, int probe
);
330 #ifdef CONFIG_PCI_QUIRKS
331 int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
);
333 static inline int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
339 #endif /* DRIVERS_PCI_H */