| #ifndef DRIVERS_PCI_H |
| #define DRIVERS_PCI_H |
| |
| #include <linux/workqueue.h> |
| |
| #define PCI_CFG_SPACE_SIZE 256 |
| #define PCI_CFG_SPACE_EXP_SIZE 4096 |
| |
| /* Functions internal to the PCI core code */ |
| |
| extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); |
| 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); |
| #ifdef HAVE_PCI_MMAP |
| extern int pci_mmap_fits(struct pci_dev *pdev, int resno, |
| struct vm_area_struct *vma); |
| #endif |
| |
| /** |
| * struct pci_platform_pm_ops - 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_update_current_state(struct pci_dev *dev, pci_power_t state); |
| extern void pci_disable_enabled_device(struct pci_dev *dev); |
| extern void pci_pm_init(struct pci_dev *dev); |
| extern void platform_pci_wakeup_init(struct pci_dev *dev); |
| extern void pci_allocate_cap_save_buffers(struct pci_dev *dev); |
| |
| static inline bool pci_is_bridge(struct pci_dev *pci_dev) |
| { |
| return !!(pci_dev->subordinate); |
| } |
| |
| 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); |
| extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); |
| extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); |
| extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); |
| extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); |
| |
| struct pci_vpd_ops { |
| ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf); |
| ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); |
| void (*release)(struct pci_dev *dev); |
| }; |
| |
| struct pci_vpd { |
| unsigned int len; |
| const struct pci_vpd_ops *ops; |
| struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ |
| }; |
| |
| extern int pci_vpd_pci22_init(struct pci_dev *dev); |
| static inline void pci_vpd_release(struct pci_dev *dev) |
| { |
| if (dev->vpd) |
| dev->vpd->ops->release(dev); |
| } |
| |
| /* PCI /proc functions */ |
| #ifdef CONFIG_PROC_FS |
| extern int pci_proc_attach_device(struct pci_dev *dev); |
| extern int pci_proc_detach_device(struct pci_dev *dev); |
| extern int pci_proc_detach_bus(struct pci_bus *bus); |
| #else |
| static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; } |
| static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; } |
| static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; } |
| #endif |
| |
| /* Functions for PCI Hotplug drivers to use */ |
| extern unsigned int pci_do_scan_bus(struct pci_bus *bus); |
| |
| #ifdef HAVE_PCI_LEGACY |
| extern void pci_create_legacy_files(struct pci_bus *bus); |
| extern void pci_remove_legacy_files(struct pci_bus *bus); |
| #else |
| static inline void pci_create_legacy_files(struct pci_bus *bus) { return; } |
| static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; } |
| #endif |
| |
| /* Lock for read/write access to pci device and bus lists */ |
| extern struct rw_semaphore pci_bus_sem; |
| |
| extern unsigned int pci_pm_d3_delay; |
| |
| #ifdef CONFIG_PCI_MSI |
| void pci_no_msi(void); |
| extern void pci_msi_init_pci_dev(struct pci_dev *dev); |
| #else |
| static inline void pci_no_msi(void) { } |
| static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } |
| #endif |
| |
| #ifdef CONFIG_PCIEAER |
| void pci_no_aer(void); |
| #else |
| static inline void pci_no_aer(void) { } |
| #endif |
| |
| static inline int pci_no_d1d2(struct pci_dev *dev) |
| { |
| unsigned int parent_dstates = 0; |
| |
| if (dev->bus->self) |
| parent_dstates = dev->bus->self->no_d1d2; |
| return (dev->no_d1d2 || parent_dstates); |
| |
| } |
| extern int pcie_mch_quirk; |
| extern struct device_attribute pci_dev_attrs[]; |
| extern struct device_attribute dev_attr_cpuaffinity; |
| extern struct device_attribute dev_attr_cpulistaffinity; |
| #ifdef CONFIG_HOTPLUG |
| extern struct bus_attribute pci_bus_attrs[]; |
| #else |
| #define pci_bus_attrs NULL |
| #endif |
| |
| |
| /** |
| * pci_match_one_device - Tell if a PCI device structure has a matching |
| * PCI device id structure |
| * @id: single PCI device id structure to match |
| * @dev: the PCI device structure to match against |
| * |
| * Returns the matching pci_device_id structure or %NULL if there is no match. |
| */ |
| static inline const struct pci_device_id * |
| pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) |
| { |
| if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) && |
| (id->device == PCI_ANY_ID || id->device == dev->device) && |
| (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) && |
| (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) && |
| !((id->class ^ dev->class) & id->class_mask)) |
| return id; |
| return NULL; |
| } |
| |
| 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) |
| |
| enum pci_bar_type { |
| pci_bar_unknown, /* Standard PCI BAR probe */ |
| pci_bar_io, /* An io port BAR */ |
| pci_bar_mem32, /* A 32-bit memory BAR */ |
| pci_bar_mem64, /* A 64-bit memory BAR */ |
| }; |
| |
| extern int pci_setup_device(struct pci_dev *dev); |
| extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, |
| struct resource *res, unsigned int reg); |
| extern int pci_resource_bar(struct pci_dev *dev, int resno, |
| enum pci_bar_type *type); |
| extern int pci_bus_add_child(struct pci_bus *bus); |
| extern void pci_enable_ari(struct pci_dev *dev); |
| /** |
| * pci_ari_enabled - query ARI forwarding status |
| * @bus: the PCI bus |
| * |
| * Returns 1 if ARI forwarding is enabled, or 0 if not enabled; |
| */ |
| static inline int pci_ari_enabled(struct pci_bus *bus) |
| { |
| return bus->self && bus->self->ari_enabled; |
| } |
| |
| #ifdef CONFIG_PCI_QUIRKS |
| extern int pci_is_reassigndev(struct pci_dev *dev); |
| resource_size_t pci_specified_resource_alignment(struct pci_dev *dev); |
| extern void pci_disable_bridge_window(struct pci_dev *dev); |
| #endif |
| |
| /* Single Root I/O Virtualization */ |
| struct pci_sriov { |
| int pos; /* capability position */ |
| int nres; /* number of resources */ |
| u32 cap; /* SR-IOV Capabilities */ |
| u16 ctrl; /* SR-IOV Control */ |
| u16 total; /* total VFs associated with the PF */ |
| u16 initial; /* initial VFs associated with the PF */ |
| u16 nr_virtfn; /* number of VFs available */ |
| u16 offset; /* first VF Routing ID offset */ |
| u16 stride; /* following VF stride */ |
| u32 pgsz; /* page size for BAR alignment */ |
| u8 link; /* Function Dependency Link */ |
| struct pci_dev *dev; /* lowest numbered PF */ |
| struct pci_dev *self; /* this PF */ |
| struct mutex lock; /* lock for VF bus */ |
| struct work_struct mtask; /* VF Migration task */ |
| u8 __iomem *mstate; /* VF Migration State Array */ |
| }; |
| |
| #ifdef CONFIG_PCI_IOV |
| extern int pci_iov_init(struct pci_dev *dev); |
| extern void pci_iov_release(struct pci_dev *dev); |
| extern int pci_iov_resource_bar(struct pci_dev *dev, int resno, |
| enum pci_bar_type *type); |
| extern void pci_restore_iov_state(struct pci_dev *dev); |
| extern int pci_iov_bus_range(struct pci_bus *bus); |
| #else |
| static inline int pci_iov_init(struct pci_dev *dev) |
| { |
| return -ENODEV; |
| } |
| static inline void pci_iov_release(struct pci_dev *dev) |
| |
| { |
| } |
| static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno, |
| enum pci_bar_type *type) |
| { |
| return 0; |
| } |
| static inline void pci_restore_iov_state(struct pci_dev *dev) |
| { |
| } |
| static inline int pci_iov_bus_range(struct pci_bus *bus) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_PCI_IOV */ |
| |
| #endif /* DRIVERS_PCI_H */ |