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 extern void pci_remove_legacy_files(struct pci_bus *bus);
87 /* Lock for read/write access to pci device and bus lists */
88 extern struct rw_semaphore pci_bus_sem;
90 extern unsigned int pci_pm_d3_delay;
93 void pci_no_msi(void);
94 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
96 static inline void pci_no_msi(void) { }
97 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
100 #ifdef CONFIG_PCIEAER
101 void pci_no_aer(void);
103 static inline void pci_no_aer(void) { }
106 static inline int pci_no_d1d2(struct pci_dev *dev)
108 unsigned int parent_dstates = 0;
111 parent_dstates = dev->bus->self->no_d1d2;
112 return (dev->no_d1d2 || parent_dstates);
115 extern int pcie_mch_quirk;
116 extern struct device_attribute pci_dev_attrs[];
117 extern struct device_attribute dev_attr_cpuaffinity;
118 extern struct device_attribute dev_attr_cpulistaffinity;
121 * pci_match_one_device - Tell if a PCI device structure has a matching
122 * PCI device id structure
123 * @id: single PCI device id structure to match
124 * @dev: the PCI device structure to match against
126 * Returns the matching pci_device_id structure or %NULL if there is no match.
128 static inline const struct pci_device_id *
129 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
131 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
132 (id->device == PCI_ANY_ID || id->device == dev->device) &&
133 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
134 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
135 !((id->class ^ dev->class) & id->class_mask))
140 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
142 /* PCI slot sysfs helper code */
143 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
145 extern struct kset *pci_slots_kset;
147 struct pci_slot_attribute {
148 struct attribute attr;
149 ssize_t (*show)(struct pci_slot *, char *);
150 ssize_t (*store)(struct pci_slot *, const char *, size_t);
152 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
154 extern void pci_enable_ari(struct pci_dev *dev);
156 * pci_ari_enabled - query ARI forwarding status
157 * @dev: the PCI device
159 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
161 static inline int pci_ari_enabled(struct pci_dev *dev)
163 return dev->ari_enabled;
166 #endif /* DRIVERS_PCI_H */