diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 117 |
1 files changed, 67 insertions, 50 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 710067f3618c..e73dfa308b87 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -35,6 +35,21 @@ /* Include the ID list */ #include <linux/pci_ids.h> +/* + * The PCI interface treats multi-function devices as independent + * devices. The slot/function address of each device is encoded + * in a single byte as follows: + * + * 7:3 = slot + * 2:0 = function + * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined uapi/linux/pci.h + * In the interest of not exposing interfaces to user-space unnecessarily, + * the following kernel only defines are being added here. + */ +#define PCI_DEVID(bus, devfn) ((((u16)bus) << 8) | devfn) +/* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ +#define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) + /* pci_slot represents a physical slot */ struct pci_slot { struct pci_bus *bus; /* The bus this slot is on */ @@ -232,6 +247,8 @@ struct pci_dev { u8 revision; /* PCI revision, low byte of class word */ u8 hdr_type; /* PCI header type (`multi' flag masked out) */ u8 pcie_cap; /* PCI-E capability offset */ + u8 msi_cap; /* MSI capability offset */ + u8 msix_cap; /* MSI-X capability offset */ u8 pcie_mpss:3; /* PCI-E Max Payload Size Supported */ u8 rom_base_reg; /* which config register controls the ROM */ u8 pin; /* which interrupt pin this device uses */ @@ -249,8 +266,7 @@ struct pci_dev { pci_power_t current_state; /* Current operating state. In ACPI-speak, this is D0-D3, D0 being fully functional, and D3 being off. */ - int pm_cap; /* PM capability offset in the - configuration space */ + u8 pm_cap; /* PM capability offset */ unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ unsigned int pme_interrupt:1; @@ -348,7 +364,7 @@ static inline struct pci_dev *pci_physfn(struct pci_dev *dev) return dev; } -extern struct pci_dev *alloc_pci_dev(void); +struct pci_dev *alloc_pci_dev(void); #define to_pci_dev(n) container_of(n, struct pci_dev, dev) #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) @@ -504,10 +520,10 @@ struct pci_ops { * ACPI needs to be able to access PCI config space before we've done a * PCI bus scan and created pci_bus structures. */ -extern int raw_pci_read(unsigned int domain, unsigned int bus, - unsigned int devfn, int reg, int len, u32 *val); -extern int raw_pci_write(unsigned int domain, unsigned int bus, - unsigned int devfn, int reg, int len, u32 val); +int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, + int reg, int len, u32 *val); +int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, + int reg, int len, u32 val); struct pci_bus_region { resource_size_t start; @@ -658,7 +674,7 @@ struct pci_driver { /* these external functions are only available when PCI support is enabled */ #ifdef CONFIG_PCI -extern void pcie_bus_configure_settings(struct pci_bus *bus, u8 smpss); +void pcie_bus_configure_settings(struct pci_bus *bus, u8 smpss); enum pcie_bus_config_types { PCIE_BUS_TUNE_OFF, @@ -675,9 +691,11 @@ extern struct bus_type pci_bus_type; * code, or pci core code. */ extern struct list_head pci_root_buses; /* list of all known PCI buses */ /* Some device drivers need know if pci is initiated */ -extern int no_pci_devices(void); +int no_pci_devices(void); void pcibios_resource_survey_bus(struct pci_bus *bus); +void pcibios_add_bus(struct pci_bus *bus); +void pcibios_remove_bus(struct pci_bus *bus); void pcibios_fixup_bus(struct pci_bus *); int __must_check pcibios_enable_device(struct pci_dev *, int mask); /* Architecture specific versions may override this (weak) */ @@ -699,7 +717,7 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region); void pcibios_scan_specific_bus(int busn); -extern struct pci_bus *pci_find_bus(int domain, int busnr); +struct pci_bus *pci_find_bus(int domain, int busnr); void pci_bus_add_devices(const struct pci_bus *bus); struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); @@ -732,14 +750,14 @@ struct resource *pci_find_parent_resource(const struct pci_dev *dev, u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); -extern struct pci_dev *pci_dev_get(struct pci_dev *dev); -extern void pci_dev_put(struct pci_dev *dev); -extern void pci_remove_bus(struct pci_bus *b); -extern void pci_stop_and_remove_bus_device(struct pci_dev *dev); +struct pci_dev *pci_dev_get(struct pci_dev *dev); +void pci_dev_put(struct pci_dev *dev); +void pci_remove_bus(struct pci_bus *b); +void pci_stop_and_remove_bus_device(struct pci_dev *dev); void pci_stop_root_bus(struct pci_bus *bus); void pci_remove_root_bus(struct pci_bus *bus); void pci_setup_cardbus(struct pci_bus *bus); -extern void pci_sort_breadthfirst(void); +void pci_sort_breadthfirst(void); #define dev_is_pci(d) ((d)->bus == &pci_bus_type) #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0)) @@ -1142,18 +1160,17 @@ static inline int pci_msi_enabled(void) return 0; } #else -extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); -extern int pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec); -extern void pci_msi_shutdown(struct pci_dev *dev); -extern void pci_disable_msi(struct pci_dev *dev); -extern int pci_msix_table_size(struct pci_dev *dev); -extern int pci_enable_msix(struct pci_dev *dev, - struct msix_entry *entries, int nvec); -extern void pci_msix_shutdown(struct pci_dev *dev); -extern void pci_disable_msix(struct pci_dev *dev); -extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); -extern void pci_restore_msi_state(struct pci_dev *dev); -extern int pci_msi_enabled(void); +int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); +int pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec); +void pci_msi_shutdown(struct pci_dev *dev); +void pci_disable_msi(struct pci_dev *dev); +int pci_msix_table_size(struct pci_dev *dev); +int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec); +void pci_msix_shutdown(struct pci_dev *dev); +void pci_disable_msix(struct pci_dev *dev); +void msi_remove_pci_irq_vectors(struct pci_dev *dev); +void pci_restore_msi_state(struct pci_dev *dev); +int pci_msi_enabled(void); #endif #ifdef CONFIG_PCIEPORTBUS @@ -1168,8 +1185,8 @@ extern bool pcie_ports_auto; static inline int pcie_aspm_enabled(void) { return 0; } static inline bool pcie_aspm_support_enabled(void) { return false; } #else -extern int pcie_aspm_enabled(void); -extern bool pcie_aspm_support_enabled(void); +int pcie_aspm_enabled(void); +bool pcie_aspm_support_enabled(void); #endif #ifdef CONFIG_PCIEAER @@ -1187,8 +1204,8 @@ static inline void pcie_set_ecrc_checking(struct pci_dev *dev) } static inline void pcie_ecrc_get_policy(char *str) {}; #else -extern void pcie_set_ecrc_checking(struct pci_dev *dev); -extern void pcie_ecrc_get_policy(char *str); +void pcie_set_ecrc_checking(struct pci_dev *dev); +void pcie_ecrc_get_policy(char *str); #endif #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) @@ -1199,9 +1216,9 @@ int ht_create_irq(struct pci_dev *dev, int idx); void ht_destroy_irq(unsigned int irq); #endif /* CONFIG_HT_IRQ */ -extern void pci_cfg_access_lock(struct pci_dev *dev); -extern bool pci_cfg_access_trylock(struct pci_dev *dev); -extern void pci_cfg_access_unlock(struct pci_dev *dev); +void pci_cfg_access_lock(struct pci_dev *dev); +bool pci_cfg_access_trylock(struct pci_dev *dev); +void pci_cfg_access_unlock(struct pci_dev *dev); /* * PCI domain support. Sometimes called PCI segment (eg by ACPI), @@ -1226,7 +1243,7 @@ static inline int pci_proc_domain(struct pci_bus *bus) /* some architectures require additional setup to direct VGA traffic */ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); -extern void pci_register_set_vga_state(arch_set_vga_state_t func); +void pci_register_set_vga_state(arch_set_vga_state_t func); #else /* CONFIG_PCI is not enabled */ @@ -1628,8 +1645,8 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, int pcibios_add_device(struct pci_dev *dev); #ifdef CONFIG_PCI_MMCONFIG -extern void __init pci_mmcfg_early_init(void); -extern void __init pci_mmcfg_late_init(void); +void __init pci_mmcfg_early_init(void); +void __init pci_mmcfg_late_init(void); #else static inline void pci_mmcfg_early_init(void) { } static inline void pci_mmcfg_late_init(void) { } @@ -1640,12 +1657,12 @@ int pci_ext_cfg_avail(void); void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); #ifdef CONFIG_PCI_IOV -extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); -extern void pci_disable_sriov(struct pci_dev *dev); -extern irqreturn_t pci_sriov_migration(struct pci_dev *dev); -extern int pci_num_vf(struct pci_dev *dev); -extern int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); -extern int pci_sriov_get_totalvfs(struct pci_dev *dev); +int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); +void pci_disable_sriov(struct pci_dev *dev); +irqreturn_t pci_sriov_migration(struct pci_dev *dev); +int pci_num_vf(struct pci_dev *dev); +int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); +int pci_sriov_get_totalvfs(struct pci_dev *dev); #else static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) { @@ -1673,8 +1690,8 @@ static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) #endif #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) -extern void pci_hp_create_module_link(struct pci_slot *pci_slot); -extern void pci_hp_remove_module_link(struct pci_slot *pci_slot); +void pci_hp_create_module_link(struct pci_slot *pci_slot); +void pci_hp_remove_module_link(struct pci_slot *pci_slot); #endif /** @@ -1818,13 +1835,13 @@ int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, /* PCI <-> OF binding helpers */ #ifdef CONFIG_OF struct device_node; -extern void pci_set_of_node(struct pci_dev *dev); -extern void pci_release_of_node(struct pci_dev *dev); -extern void pci_set_bus_of_node(struct pci_bus *bus); -extern void pci_release_bus_of_node(struct pci_bus *bus); +void pci_set_of_node(struct pci_dev *dev); +void pci_release_of_node(struct pci_dev *dev); +void pci_set_bus_of_node(struct pci_bus *bus); +void pci_release_bus_of_node(struct pci_bus *bus); /* Arch may override this (weak) */ -extern struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus); +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); static inline struct device_node * pci_device_to_OF_node(const struct pci_dev *pdev) |