4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 /* Functions internal to the PCI core code */
9 extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
10 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
11 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
12 extern void pci_cleanup_rom(struct pci_dev *dev);
15 * Firmware PM callbacks
17 * @is_manageable - returns 'true' if given device is power manageable by the
20 * @set_state - invokes the platform firmware to set the device's power state
22 * @choose_state - returns PCI power state of given device preferred by the
23 * platform; to be used during system-wide transitions from a
24 * sleeping state to the working state and vice versa
26 * @can_wakeup - returns 'true' if given device is capable of waking up the
27 * system from a sleeping state
29 * @sleep_wake - enables/disables the system wake up capability of given device
31 * If given platform is generally capable of power managing PCI devices, all of
32 * these callbacks are mandatory.
34 struct pci_platform_pm_ops {
35 bool (*is_manageable)(struct pci_dev *dev);
36 int (*set_state)(struct pci_dev *dev, pci_power_t state);
37 pci_power_t (*choose_state)(struct pci_dev *dev);
38 bool (*can_wakeup)(struct pci_dev *dev);
39 int (*sleep_wake)(struct pci_dev *dev, bool enable);
42 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
43 extern void pci_pm_init(struct pci_dev *dev);
45 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
46 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
47 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
48 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
49 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
50 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
53 int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
54 int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
55 void (*release)(struct pci_dev *dev);
60 struct pci_vpd_ops *ops;
61 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
64 extern int pci_vpd_pci22_init(struct pci_dev *dev);
65 static inline void pci_vpd_release(struct pci_dev *dev)
68 dev->vpd->ops->release(dev);
71 /* PCI /proc functions */
73 extern int pci_proc_attach_device(struct pci_dev *dev);
74 extern int pci_proc_detach_device(struct pci_dev *dev);
75 extern int pci_proc_detach_bus(struct pci_bus *bus);
77 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
78 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
79 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
82 /* Functions for PCI Hotplug drivers to use */
83 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
85 #ifdef HAVE_PCI_LEGACY
86 extern void pci_create_legacy_files(struct pci_bus *bus);
87 extern void pci_remove_legacy_files(struct pci_bus *bus);
89 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
90 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
93 /* Lock for read/write access to pci device and bus lists */
94 extern struct rw_semaphore pci_bus_sem;
96 extern unsigned int pci_pm_d3_delay;
99 void pci_no_msi(void);
100 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
102 static inline void pci_no_msi(void) { }
103 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
106 #ifdef CONFIG_PCIEAER
107 void pci_no_aer(void);
109 static inline void pci_no_aer(void) { }
112 static inline int pci_no_d1d2(struct pci_dev *dev)
114 unsigned int parent_dstates = 0;
117 parent_dstates = dev->bus->self->no_d1d2;
118 return (dev->no_d1d2 || parent_dstates);
121 extern int pcie_mch_quirk;
122 extern struct device_attribute pci_dev_attrs[];
123 extern struct device_attribute dev_attr_cpuaffinity;
124 extern struct device_attribute dev_attr_cpulistaffinity;
127 * pci_match_one_device - Tell if a PCI device structure has a matching
128 * PCI device id structure
129 * @id: single PCI device id structure to match
130 * @dev: the PCI device structure to match against
132 * Returns the matching pci_device_id structure or %NULL if there is no match.
134 static inline const struct pci_device_id *
135 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
137 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
138 (id->device == PCI_ANY_ID || id->device == dev->device) &&
139 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
140 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
141 !((id->class ^ dev->class) & id->class_mask))
146 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
148 /* PCI slot sysfs helper code */
149 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
151 extern struct kset *pci_slots_kset;
153 struct pci_slot_attribute {
154 struct attribute attr;
155 ssize_t (*show)(struct pci_slot *, char *);
156 ssize_t (*store)(struct pci_slot *, const char *, size_t);
158 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
160 extern void pci_enable_ari(struct pci_dev *dev);
162 * pci_ari_enabled - query ARI forwarding status
163 * @dev: the PCI device
165 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
167 static inline int pci_ari_enabled(struct pci_dev *dev)
169 return dev->ari_enabled;
172 #endif /* DRIVERS_PCI_H */