ACPI: rearrange acpi_pci_bind/acpi_pci_unbind in pci_bind.c
[linux-2.6/linux-acpi-2.6.git] / drivers / pci / pci.h
blobd03f6b99f292cbe36e619ad1c599aadd75bb39dd
1 #ifndef DRIVERS_PCI_H
2 #define DRIVERS_PCI_H
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 extern void pci_cleanup_rom(struct pci_dev *dev);
15 #ifdef HAVE_PCI_MMAP
16 extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
17 struct vm_area_struct *vma);
18 #endif
20 /**
21 * struct pci_platform_pm_ops - Firmware PM callbacks
23 * @is_manageable: returns 'true' if given device is power manageable by the
24 * platform firmware
26 * @set_state: invokes the platform firmware to set the device's power state
28 * @choose_state: returns PCI power state of given device preferred by the
29 * platform; to be used during system-wide transitions from a
30 * sleeping state to the working state and vice versa
32 * @can_wakeup: returns 'true' if given device is capable of waking up the
33 * system from a sleeping state
35 * @sleep_wake: enables/disables the system wake up capability of given device
37 * If given platform is generally capable of power managing PCI devices, all of
38 * these callbacks are mandatory.
40 struct pci_platform_pm_ops {
41 bool (*is_manageable)(struct pci_dev *dev);
42 int (*set_state)(struct pci_dev *dev, pci_power_t state);
43 pci_power_t (*choose_state)(struct pci_dev *dev);
44 bool (*can_wakeup)(struct pci_dev *dev);
45 int (*sleep_wake)(struct pci_dev *dev, bool enable);
48 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
49 extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
50 extern void pci_disable_enabled_device(struct pci_dev *dev);
51 extern void pci_pm_init(struct pci_dev *dev);
52 extern void platform_pci_wakeup_init(struct pci_dev *dev);
53 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
55 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
57 return !!(pci_dev->subordinate);
60 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
61 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
62 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
63 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
64 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
65 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
67 struct pci_vpd_ops {
68 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
69 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
70 void (*release)(struct pci_dev *dev);
73 struct pci_vpd {
74 unsigned int len;
75 const struct pci_vpd_ops *ops;
76 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
79 extern int pci_vpd_pci22_init(struct pci_dev *dev);
80 static inline void pci_vpd_release(struct pci_dev *dev)
82 if (dev->vpd)
83 dev->vpd->ops->release(dev);
86 /* PCI /proc functions */
87 #ifdef CONFIG_PROC_FS
88 extern int pci_proc_attach_device(struct pci_dev *dev);
89 extern int pci_proc_detach_device(struct pci_dev *dev);
90 extern int pci_proc_detach_bus(struct pci_bus *bus);
91 #else
92 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
93 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
94 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
95 #endif
97 /* Functions for PCI Hotplug drivers to use */
98 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
100 #ifdef HAVE_PCI_LEGACY
101 extern void pci_create_legacy_files(struct pci_bus *bus);
102 extern void pci_remove_legacy_files(struct pci_bus *bus);
103 #else
104 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
105 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
106 #endif
108 /* Lock for read/write access to pci device and bus lists */
109 extern struct rw_semaphore pci_bus_sem;
111 extern unsigned int pci_pm_d3_delay;
113 #ifdef CONFIG_PCI_MSI
114 void pci_no_msi(void);
115 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
116 #else
117 static inline void pci_no_msi(void) { }
118 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
119 #endif
121 #ifdef CONFIG_PCIEAER
122 void pci_no_aer(void);
123 #else
124 static inline void pci_no_aer(void) { }
125 #endif
127 static inline int pci_no_d1d2(struct pci_dev *dev)
129 unsigned int parent_dstates = 0;
131 if (dev->bus->self)
132 parent_dstates = dev->bus->self->no_d1d2;
133 return (dev->no_d1d2 || parent_dstates);
136 extern int pcie_mch_quirk;
137 extern struct device_attribute pci_dev_attrs[];
138 extern struct device_attribute dev_attr_cpuaffinity;
139 extern struct device_attribute dev_attr_cpulistaffinity;
140 #ifdef CONFIG_HOTPLUG
141 extern struct bus_attribute pci_bus_attrs[];
142 #else
143 #define pci_bus_attrs NULL
144 #endif
148 * pci_match_one_device - Tell if a PCI device structure has a matching
149 * PCI device id structure
150 * @id: single PCI device id structure to match
151 * @dev: the PCI device structure to match against
153 * Returns the matching pci_device_id structure or %NULL if there is no match.
155 static inline const struct pci_device_id *
156 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
158 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
159 (id->device == PCI_ANY_ID || id->device == dev->device) &&
160 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
161 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
162 !((id->class ^ dev->class) & id->class_mask))
163 return id;
164 return NULL;
167 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
169 /* PCI slot sysfs helper code */
170 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
172 extern struct kset *pci_slots_kset;
174 struct pci_slot_attribute {
175 struct attribute attr;
176 ssize_t (*show)(struct pci_slot *, char *);
177 ssize_t (*store)(struct pci_slot *, const char *, size_t);
179 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
181 enum pci_bar_type {
182 pci_bar_unknown, /* Standard PCI BAR probe */
183 pci_bar_io, /* An io port BAR */
184 pci_bar_mem32, /* A 32-bit memory BAR */
185 pci_bar_mem64, /* A 64-bit memory BAR */
188 extern int pci_setup_device(struct pci_dev *dev);
189 extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
190 struct resource *res, unsigned int reg);
191 extern int pci_resource_bar(struct pci_dev *dev, int resno,
192 enum pci_bar_type *type);
193 extern int pci_bus_add_child(struct pci_bus *bus);
194 extern void pci_enable_ari(struct pci_dev *dev);
196 * pci_ari_enabled - query ARI forwarding status
197 * @bus: the PCI bus
199 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
201 static inline int pci_ari_enabled(struct pci_bus *bus)
203 return bus->self && bus->self->ari_enabled;
206 #ifdef CONFIG_PCI_QUIRKS
207 extern int pci_is_reassigndev(struct pci_dev *dev);
208 resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
209 extern void pci_disable_bridge_window(struct pci_dev *dev);
210 #endif
212 /* Single Root I/O Virtualization */
213 struct pci_sriov {
214 int pos; /* capability position */
215 int nres; /* number of resources */
216 u32 cap; /* SR-IOV Capabilities */
217 u16 ctrl; /* SR-IOV Control */
218 u16 total; /* total VFs associated with the PF */
219 u16 initial; /* initial VFs associated with the PF */
220 u16 nr_virtfn; /* number of VFs available */
221 u16 offset; /* first VF Routing ID offset */
222 u16 stride; /* following VF stride */
223 u32 pgsz; /* page size for BAR alignment */
224 u8 link; /* Function Dependency Link */
225 struct pci_dev *dev; /* lowest numbered PF */
226 struct pci_dev *self; /* this PF */
227 struct mutex lock; /* lock for VF bus */
228 struct work_struct mtask; /* VF Migration task */
229 u8 __iomem *mstate; /* VF Migration State Array */
232 #ifdef CONFIG_PCI_IOV
233 extern int pci_iov_init(struct pci_dev *dev);
234 extern void pci_iov_release(struct pci_dev *dev);
235 extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
236 enum pci_bar_type *type);
237 extern void pci_restore_iov_state(struct pci_dev *dev);
238 extern int pci_iov_bus_range(struct pci_bus *bus);
239 #else
240 static inline int pci_iov_init(struct pci_dev *dev)
242 return -ENODEV;
244 static inline void pci_iov_release(struct pci_dev *dev)
248 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
249 enum pci_bar_type *type)
251 return 0;
253 static inline void pci_restore_iov_state(struct pci_dev *dev)
256 static inline int pci_iov_bus_range(struct pci_bus *bus)
258 return 0;
260 #endif /* CONFIG_PCI_IOV */
262 #endif /* DRIVERS_PCI_H */