diff options
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 0a497c1b4227..d807cd786f20 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -5,11 +5,36 @@ extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); extern void pci_cleanup_rom(struct pci_dev *dev); -/* Firmware callbacks */ -extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev, - pm_message_t state); -extern int (*platform_pci_set_power_state)(struct pci_dev *dev, - pci_power_t state); +/** + * Firmware PM callbacks + * + * @is_manageable - returns 'true' if given device is power manageable by the + * platform firmware + * + * @set_state - invokes the platform firmware to set the device's power state + * + * @choose_state - returns PCI power state of given device preferred by the + * platform; to be used during system-wide transitions from a + * sleeping state to the working state and vice versa + * + * @can_wakeup - returns 'true' if given device is capable of waking up the + * system from a sleeping state + * + * @sleep_wake - enables/disables the system wake up capability of given device + * + * If given platform is generally capable of power managing PCI devices, all of + * these callbacks are mandatory. + */ +struct pci_platform_pm_ops { + bool (*is_manageable)(struct pci_dev *dev); + int (*set_state)(struct pci_dev *dev, pci_power_t state); + pci_power_t (*choose_state)(struct pci_dev *dev); + bool (*can_wakeup)(struct pci_dev *dev); + int (*sleep_wake)(struct pci_dev *dev, bool enable); +}; + +extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops); +extern void pci_pm_init(struct pci_dev *dev); extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); @@ -21,11 +46,11 @@ extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); struct pci_vpd_ops { int (*read)(struct pci_dev *dev, int pos, int size, char *buf); int (*write)(struct pci_dev *dev, int pos, int size, const char *buf); - int (*get_size)(struct pci_dev *dev); void (*release)(struct pci_dev *dev); }; struct pci_vpd { + unsigned int len; struct pci_vpd_ops *ops; struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ }; @@ -106,3 +131,16 @@ pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) } struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); + +/* PCI slot sysfs helper code */ +#define to_pci_slot(s) container_of(s, struct pci_slot, kobj) + +extern struct kset *pci_slots_kset; + +struct pci_slot_attribute { + struct attribute attr; + ssize_t (*show)(struct pci_slot *, char *); + ssize_t (*store)(struct pci_slot *, const char *, size_t); +}; +#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) + |