1 #ifndef DRIVERS_PCI_H 2 #define DRIVERS_PCI_H 3 4 #define PCI_CFG_SPACE_SIZE 256 5 #define PCI_CFG_SPACE_EXP_SIZE 4096 6 7 /* Functions internal to the PCI core code */ 8 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); 13 14 /** 15 * Firmware PM callbacks 16 * 17 * @is_manageable - returns 'true' if given device is power manageable by the 18 * platform firmware 19 * 20 * @set_state - invokes the platform firmware to set the device's power state 21 * 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 25 * 26 * @can_wakeup - returns 'true' if given device is capable of waking up the 27 * system from a sleeping state 28 * 29 * @sleep_wake - enables/disables the system wake up capability of given device 30 * 31 * If given platform is generally capable of power managing PCI devices, all of 32 * these callbacks are mandatory. 33 */ 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); 40 }; 41 42 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops); 43 extern void pci_pm_init(struct pci_dev *dev); 44 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); 51 52 struct pci_vpd_ops { 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); 56 }; 57 58 struct pci_vpd { 59 unsigned int len; 60 struct pci_vpd_ops *ops; 61 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ 62 }; 63 64 extern int pci_vpd_pci22_init(struct pci_dev *dev); 65 static inline void pci_vpd_release(struct pci_dev *dev) 66 { 67 if (dev->vpd) 68 dev->vpd->ops->release(dev); 69 } 70 71 /* PCI /proc functions */ 72 #ifdef CONFIG_PROC_FS 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); 76 #else 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; } 80 #endif 81 82 /* Functions for PCI Hotplug drivers to use */ 83 extern unsigned int pci_do_scan_bus(struct pci_bus *bus); 84 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); 88 #else 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; } 91 #endif 92 93 /* Lock for read/write access to pci device and bus lists */ 94 extern struct rw_semaphore pci_bus_sem; 95 96 extern unsigned int pci_pm_d3_delay; 97 98 #ifdef CONFIG_PCI_MSI 99 void pci_no_msi(void); 100 extern void pci_msi_init_pci_dev(struct pci_dev *dev); 101 extern void __devinit msi_init(void); 102 #else 103 static inline void pci_no_msi(void) { } 104 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } 105 static inline void msi_init(void) { } 106 #endif 107 108 #ifdef CONFIG_PCIEAER 109 void pci_no_aer(void); 110 #else 111 static inline void pci_no_aer(void) { } 112 #endif 113 114 static inline int pci_no_d1d2(struct pci_dev *dev) 115 { 116 unsigned int parent_dstates = 0; 117 118 if (dev->bus->self) 119 parent_dstates = dev->bus->self->no_d1d2; 120 return (dev->no_d1d2 || parent_dstates); 121 122 } 123 extern int pcie_mch_quirk; 124 extern struct device_attribute pci_dev_attrs[]; 125 extern struct device_attribute dev_attr_cpuaffinity; 126 extern struct device_attribute dev_attr_cpulistaffinity; 127 128 /** 129 * pci_match_one_device - Tell if a PCI device structure has a matching 130 * PCI device id structure 131 * @id: single PCI device id structure to match 132 * @dev: the PCI device structure to match against 133 * 134 * Returns the matching pci_device_id structure or %NULL if there is no match. 135 */ 136 static inline const struct pci_device_id * 137 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) 138 { 139 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) && 140 (id->device == PCI_ANY_ID || id->device == dev->device) && 141 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) && 142 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) && 143 !((id->class ^ dev->class) & id->class_mask)) 144 return id; 145 return NULL; 146 } 147 148 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); 149 150 /* PCI slot sysfs helper code */ 151 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj) 152 153 extern struct kset *pci_slots_kset; 154 155 struct pci_slot_attribute { 156 struct attribute attr; 157 ssize_t (*show)(struct pci_slot *, char *); 158 ssize_t (*store)(struct pci_slot *, const char *, size_t); 159 }; 160 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) 161 162 extern void pci_enable_ari(struct pci_dev *dev); 163 /** 164 * pci_ari_enabled - query ARI forwarding status 165 * @dev: the PCI device 166 * 167 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled; 168 */ 169 static inline int pci_ari_enabled(struct pci_dev *dev) 170 { 171 return dev->ari_enabled; 172 } 173 174 #endif /* DRIVERS_PCI_H */ 175