diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index ed47147ac99..be1de01de1c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -254,10 +254,10 @@ 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 pcie_type:4; /* PCI-E device/port type */ 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 */ + u16 pcie_flags_reg; /* cached PCI-E Capabilities Register */ struct pci_driver *driver; /* which driver has allocated this device */ u64 dma_mask; /* Mask of the bits of bus address this @@ -595,7 +595,7 @@ struct pci_driver { int (*resume_early) (struct pci_dev *dev); int (*resume) (struct pci_dev *dev); /* Device woken up */ void (*shutdown) (struct pci_dev *dev); - struct pci_error_handlers *err_handler; + const struct pci_error_handlers *err_handler; struct device_driver driver; struct pci_dynids dynids; }; @@ -752,6 +752,7 @@ enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); int pci_find_capability(struct pci_dev *dev, int cap); int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); int pci_find_ext_capability(struct pci_dev *dev, int cap); +int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); struct pci_bus *pci_find_next_bus(const struct pci_bus *from); @@ -813,6 +814,39 @@ static inline int pci_write_config_dword(const struct pci_dev *dev, int where, return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); } +int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); +int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); +int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); +int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); +int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, + u16 clear, u16 set); +int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, + u32 clear, u32 set); + +static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, + u16 set) +{ + return pcie_capability_clear_and_set_word(dev, pos, 0, set); +} + +static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, + u32 set) +{ + return pcie_capability_clear_and_set_dword(dev, pos, 0, set); +} + +static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, + u16 clear) +{ + return pcie_capability_clear_and_set_word(dev, pos, clear, 0); +} + +static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, + u32 clear) +{ + return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); +} + /* user-space driven config access */ int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); @@ -1027,6 +1061,8 @@ int pci_cfg_space_size_ext(struct pci_dev *dev); int pci_cfg_space_size(struct pci_dev *dev); unsigned char pci_bus_max_busnr(struct pci_bus *bus); void pci_setup_bridge(struct pci_bus *bus); +resource_size_t pcibios_window_alignment(struct pci_bus *bus, + unsigned long type); #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) @@ -1468,7 +1504,7 @@ enum pci_fixup_pass { /* Anonymous variables would be nice... */ #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ class_shift, hook) \ - static const struct pci_fixup const __pci_fixup_##name __used \ + static const struct pci_fixup __pci_fixup_##name __used \ __attribute__((__section__(#section), aligned((sizeof(void *))))) \ = { vendor, device, class, class_shift, hook }; @@ -1646,6 +1682,15 @@ static inline bool pci_is_pcie(struct pci_dev *dev) return !!pci_pcie_cap(dev); } +/** + * pci_pcie_type - get the PCIe device/port type + * @dev: PCI device + */ +static inline int pci_pcie_type(const struct pci_dev *dev) +{ + return (dev->pcie_flags_reg & PCI_EXP_FLAGS_TYPE) >> 4; +} + void pci_request_acs(void); bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); bool pci_acs_path_enabled(struct pci_dev *start, |