diff options
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 221 |
1 files changed, 107 insertions, 114 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index fbd0e3adbca..0601890db22 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -1,20 +1,32 @@ #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 +extern const unsigned char pcie_link_speed[]; + /* 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); +int pci_create_sysfs_dev_files(struct pci_dev *pdev); +void pci_remove_sysfs_dev_files(struct pci_dev *pdev); +#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI) +static inline void pci_create_firmware_label_files(struct pci_dev *pdev) +{ return; } +static inline void pci_remove_firmware_label_files(struct pci_dev *pdev) +{ return; } +#else +void pci_create_firmware_label_files(struct pci_dev *pdev); +void pci_remove_firmware_label_files(struct pci_dev *pdev); +#endif +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); +enum pci_mmap_api { + PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */ + PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */ +}; +int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai, + enum pci_mmap_api mmap_api); #endif int pci_probe_reset_function(struct pci_dev *dev); @@ -30,11 +42,12 @@ int pci_probe_reset_function(struct pci_dev *dev); * 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 * + * @run_wake: enables/disables the platform to generate run-time wake-up events + * for given device (the device's wake-up capability has to be + * enabled by @sleep_wake for this feature to work) + * * If given platform is generally capable of power managing PCI devices, all of * these callbacks are mandatory. */ @@ -42,29 +55,33 @@ 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); + int (*run_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); +int pci_set_platform_pm(struct pci_platform_pm_ops *ops); +void pci_update_current_state(struct pci_dev *dev, pci_power_t state); +void pci_power_up(struct pci_dev *dev); +void pci_disable_enabled_device(struct pci_dev *dev); +int pci_finish_runtime_suspend(struct pci_dev *dev); +int __pci_pme_wakeup(struct pci_dev *dev, void *ign); +void pci_config_pm_runtime_get(struct pci_dev *dev); +void pci_config_pm_runtime_put(struct pci_dev *dev); +void pci_pm_init(struct pci_dev *dev); +void pci_allocate_cap_save_buffers(struct pci_dev *dev); +void pci_free_cap_save_buffers(struct pci_dev *dev); + +static inline void pci_wakeup_event(struct pci_dev *dev) +{ + /* Wait 100 ms before the system can be put into a sleep state. */ + pm_wakeup_event(&dev->dev, 100); +} -static inline bool pci_is_bridge(struct pci_dev *pci_dev) +static inline bool pci_has_subordinate(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); @@ -77,7 +94,7 @@ struct pci_vpd { struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ }; -extern int pci_vpd_pci22_init(struct pci_dev *dev); +int pci_vpd_pci22_init(struct pci_dev *dev); static inline void pci_vpd_release(struct pci_dev *dev) { if (dev->vpd) @@ -86,9 +103,9 @@ static inline void pci_vpd_release(struct pci_dev *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); +int pci_proc_attach_device(struct pci_dev *dev); +int pci_proc_detach_device(struct pci_dev *dev); +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; } @@ -96,11 +113,11 @@ 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); +int pci_hp_add_bridge(struct pci_dev *dev); #ifdef HAVE_PCI_LEGACY -extern void pci_create_legacy_files(struct pci_bus *bus); -extern void pci_remove_legacy_files(struct pci_bus *bus); +void pci_create_legacy_files(struct pci_bus *bus); +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; } @@ -109,21 +126,19 @@ static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; } /* Lock for read/write access to pci device and bus lists */ extern struct rw_semaphore pci_bus_sem; +extern raw_spinlock_t pci_lock; + 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); +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 +void pci_realloc_get_opt(char *); static inline int pci_no_d1d2(struct pci_dev *dev) { @@ -134,14 +149,10 @@ static inline int pci_no_d1d2(struct pci_dev *dev) return (dev->no_d1d2 || parent_dstates); } -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 +extern const struct attribute_group *pci_dev_groups[]; +extern const struct attribute_group *pcibus_groups[]; +extern struct device_type pci_dev_type; +extern const struct attribute_group *pci_bus_groups[]; /** @@ -164,8 +175,6 @@ pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) 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) @@ -185,13 +194,19 @@ enum pci_bar_type { 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); +bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl, + int crs_timeout); +int pci_setup_device(struct pci_dev *dev); +int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, + struct resource *res, unsigned int reg); +int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type); +void pci_configure_ari(struct pci_dev *dev); +void __pci_bus_size_bridges(struct pci_bus *bus, + struct list_head *realloc_head); +void __pci_bus_assign_resources(const struct pci_bus *bus, + struct list_head *realloc_head, + struct list_head *fail_head); + /** * pci_ari_enabled - query ARI forwarding status * @bus: the PCI bus @@ -203,11 +218,8 @@ 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 +void pci_reassigndev_resource_alignment(struct pci_dev *dev); +void pci_disable_bridge_window(struct pci_dev *dev); /* Single Root I/O Virtualization */ struct pci_sriov { @@ -215,51 +227,36 @@ struct pci_sriov { 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 total_VFs; /* total VFs associated with the PF */ + u16 initial_VFs; /* initial VFs associated with the PF */ + u16 num_VFs; /* 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 */ + u16 driver_max_VFs; /* max num VFs driver supports */ 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 */ -}; - -/* Address Translation Service */ -struct pci_ats { - int pos; /* capability position */ - int stu; /* Smallest Translation Unit */ - int qdep; /* Invalidate Queue Depth */ - int ref_cnt; /* Physical Function reference count */ - int is_enabled:1; /* Enable bit is set */ }; -#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 int pci_sriov_resource_alignment(struct pci_dev *dev, int resno); -extern void pci_restore_iov_state(struct pci_dev *dev); -extern int pci_iov_bus_range(struct pci_bus *bus); - -extern int pci_enable_ats(struct pci_dev *dev, int ps); -extern void pci_disable_ats(struct pci_dev *dev); -extern int pci_ats_queue_depth(struct pci_dev *dev); -/** - * pci_ats_enabled - query the ATS status - * @dev: the PCI device - * - * Returns 1 if ATS capability is enabled, or 0 if not. - */ -static inline int pci_ats_enabled(struct pci_dev *dev) +#ifdef CONFIG_PCI_ATS +void pci_restore_ats_state(struct pci_dev *dev); +#else +static inline void pci_restore_ats_state(struct pci_dev *dev) { - return dev->ats && dev->ats->is_enabled; } +#endif /* CONFIG_PCI_ATS */ + +#ifdef CONFIG_PCI_IOV +int pci_iov_init(struct pci_dev *dev); +void pci_iov_release(struct pci_dev *dev); +int pci_iov_resource_bar(struct pci_dev *dev, int resno, + enum pci_bar_type *type); +resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno); +void pci_restore_iov_state(struct pci_dev *dev); +int pci_iov_bus_range(struct pci_bus *bus); + #else static inline int pci_iov_init(struct pci_dev *dev) { @@ -282,25 +279,12 @@ static inline int pci_iov_bus_range(struct pci_bus *bus) return 0; } -static inline int pci_enable_ats(struct pci_dev *dev, int ps) -{ - return -ENODEV; -} -static inline void pci_disable_ats(struct pci_dev *dev) -{ -} -static inline int pci_ats_queue_depth(struct pci_dev *dev) -{ - return -ENODEV; -} -static inline int pci_ats_enabled(struct pci_dev *dev) -{ - return 0; -} #endif /* CONFIG_PCI_IOV */ -static inline int pci_resource_alignment(struct pci_dev *dev, - struct resource *res) +unsigned long pci_cardbus_resource_alignment(struct resource *); + +static inline resource_size_t pci_resource_alignment(struct pci_dev *dev, + struct resource *res) { #ifdef CONFIG_PCI_IOV int resno = res - dev->resource; @@ -308,10 +292,12 @@ static inline int pci_resource_alignment(struct pci_dev *dev, if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END) return pci_sriov_resource_alignment(dev, resno); #endif + if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS) + return pci_cardbus_resource_alignment(res); return resource_alignment(res); } -extern void pci_enable_acs(struct pci_dev *dev); +void pci_enable_acs(struct pci_dev *dev); struct pci_dev_reset_methods { u16 vendor; @@ -319,6 +305,13 @@ struct pci_dev_reset_methods { int (*reset)(struct pci_dev *dev, int probe); }; -extern int pci_dev_specific_reset(struct pci_dev *dev, int probe); +#ifdef CONFIG_PCI_QUIRKS +int pci_dev_specific_reset(struct pci_dev *dev, int probe); +#else +static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe) +{ + return -ENOTTY; +} +#endif #endif /* DRIVERS_PCI_H */ |