drivers/pci/pci.h

   1 /* Functions internal to the PCI core code */
   2
   3 extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
   4 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
   5 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
   6 extern void pci_cleanup_rom(struct pci_dev *dev);
   7
   8 /**
   9  * Firmware PM callbacks
  10  *
  11  * @is_manageable - returns 'true' if given device is power manageable by the
  12  *                  platform firmware
  13  *
  14  * @set_state - invokes the platform firmware to set the device's power state
  15  *
  16  * @choose_state - returns PCI power state of given device preferred by the
  17  *                 platform; to be used during system-wide transitions from a
  18  *                 sleeping state to the working state and vice versa
  19  *
  20  * @can_wakeup - returns 'true' if given device is capable of waking up the
  21  *               system from a sleeping state
  22  *
  23  * @sleep_wake - enables/disables the system wake up capability of given device
  24  *
  25  * If given platform is generally capable of power managing PCI devices, all of
  26  * these callbacks are mandatory.
  27  */
  28 struct pci_platform_pm_ops {
  29         bool (*is_manageable)(struct pci_dev *dev);
  30         int (*set_state)(struct pci_dev *dev, pci_power_t state);
  31         pci_power_t (*choose_state)(struct pci_dev *dev);
  32         bool (*can_wakeup)(struct pci_dev *dev);
  33         int (*sleep_wake)(struct pci_dev *dev, bool enable);
  34 };
  35
  36 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
  37 extern void pci_pm_init(struct pci_dev *dev);
  38 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
  39
  40 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
  41 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
  42 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
  43 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
  44 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
  45 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
  46
  47 struct pci_vpd_ops {
  48         int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
  49         int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
  50         void (*release)(struct pci_dev *dev);
  51 };
  52
  53 struct pci_vpd {
  54         unsigned int len;
  55         struct pci_vpd_ops *ops;
  56         struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
  57 };
  58
  59 extern int pci_vpd_pci22_init(struct pci_dev *dev);
  60 static inline void pci_vpd_release(struct pci_dev *dev)
  61 {
  62         if (dev->vpd)
  63                 dev->vpd->ops->release(dev);
  64 }
  65
  66 /* PCI /proc functions */
  67 #ifdef CONFIG_PROC_FS
  68 extern int pci_proc_attach_device(struct pci_dev *dev);
  69 extern int pci_proc_detach_device(struct pci_dev *dev);
  70 extern int pci_proc_detach_bus(struct pci_bus *bus);
  71 #else
  72 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
  73 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
  74 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
  75 #endif
  76
  77 /* Functions for PCI Hotplug drivers to use */
  78 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
  79
  80 extern void pci_remove_legacy_files(struct pci_bus *bus);
  81
  82 /* Lock for read/write access to pci device and bus lists */
  83 extern struct rw_semaphore pci_bus_sem;
  84
  85 extern unsigned int pci_pm_d3_delay;
  86
  87 #ifdef CONFIG_PCI_MSI
  88 void pci_no_msi(void);
  89 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
  90 #else
  91 static inline void pci_no_msi(void) { }
  92 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
  93 #endif
  94
  95 #ifdef CONFIG_PCIEAER
  96 void pci_no_aer(void);
  97 #else
  98 static inline void pci_no_aer(void) { }
  99 #endif
 100
 101 static inline int pci_no_d1d2(struct pci_dev *dev)
 102 {
 103         unsigned int parent_dstates = 0;
 104
 105         if (dev->bus->self)
 106                 parent_dstates = dev->bus->self->no_d1d2;
 107         return (dev->no_d1d2 || parent_dstates);
 108
 109 }
 110 extern int pcie_mch_quirk;
 111 extern struct device_attribute pci_dev_attrs[];
 112 extern struct device_attribute dev_attr_cpuaffinity;
 113
 114 /**
 115  * pci_match_one_device - Tell if a PCI device structure has a matching
 116  *                        PCI device id structure
 117  * @id: single PCI device id structure to match
 118  * @dev: the PCI device structure to match against
 119  *
 120  * Returns the matching pci_device_id structure or %NULL if there is no match.
 121  */
 122 static inline const struct pci_device_id *
 123 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
 124 {
 125         if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
 126             (id->device == PCI_ANY_ID || id->device == dev->device) &&
 127             (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
 128             (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
 129             !((id->class ^ dev->class) & id->class_mask))
 130                 return id;
 131         return NULL;
 132 }
 133
 134 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
 135
 136 /* PCI slot sysfs helper code */
 137 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
 138
 139 extern struct kset *pci_slots_kset;
 140
 141 struct pci_slot_attribute {
 142         struct attribute attr;
 143         ssize_t (*show)(struct pci_slot *, char *);
 144         ssize_t (*store)(struct pci_slot *, const char *, size_t);
 145 };
 146 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
 147