diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index c446b5ca2d38..f27893b3b724 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -49,7 +49,7 @@ #include <linux/compiler.h> #include <linux/errno.h> #include <linux/kobject.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <linux/device.h> #include <linux/io.h> #include <linux/irqreturn.h> @@ -843,8 +843,8 @@ void pci_enable_ido(struct pci_dev *dev, unsigned long type); void pci_disable_ido(struct pci_dev *dev, unsigned long type); enum pci_obff_signal_type { - PCI_EXP_OBFF_SIGNAL_L0, - PCI_EXP_OBFF_SIGNAL_ALWAYS, + PCI_EXP_OBFF_SIGNAL_L0 = 0, + PCI_EXP_OBFF_SIGNAL_ALWAYS = 1, }; int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type); void pci_disable_obff(struct pci_dev *dev); @@ -879,7 +879,7 @@ void pdev_enable_device(struct pci_dev *); void pdev_sort_resources(struct pci_dev *, struct resource_list *); int pci_enable_resources(struct pci_dev *, int mask); void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), - int (*)(struct pci_dev *, u8, u8)); + int (*)(const struct pci_dev *, u8, u8)); #define HAVE_PCI_REQ_REGIONS 2 int __must_check pci_request_regions(struct pci_dev *, const char *); int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); @@ -1589,5 +1589,44 @@ int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw); +/* 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); + +/* Arch may override this (weak) */ +extern struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus); + +static inline struct device_node *pci_device_to_OF_node(struct pci_dev *pdev) +{ + return pdev ? pdev->dev.of_node : NULL; +} + +static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) +{ + return bus ? bus->dev.of_node : NULL; +} + +#else /* CONFIG_OF */ +static inline void pci_set_of_node(struct pci_dev *dev) { } +static inline void pci_release_of_node(struct pci_dev *dev) { } +static inline void pci_set_bus_of_node(struct pci_bus *bus) { } +static inline void pci_release_bus_of_node(struct pci_bus *bus) { } +#endif /* CONFIG_OF */ + +/** + * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device + * @pdev: the PCI device + * + * if the device is PCIE, return NULL + * if the device isn't connected to a PCIe bridge (that is its parent is a + * legacy PCI bridge and the bridge is directly connected to bus 0), return its + * parent + */ +struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |