diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 67 |
1 files changed, 63 insertions, 4 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 7bd624bfdcfd..72698d89e767 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -52,6 +52,7 @@ #include <asm/atomic.h> #include <linux/device.h> #include <linux/io.h> +#include <linux/irqreturn.h> /* Include the ID list */ #include <linux/pci_ids.h> @@ -93,6 +94,12 @@ enum { /* #6: expansion ROM resource */ PCI_ROM_RESOURCE, + /* device specific resources */ +#ifdef CONFIG_PCI_IOV + PCI_IOV_RESOURCES, + PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, +#endif + /* resources assigned to buses behind the bridge */ #define PCI_BRIDGE_RESOURCE_NUM 4 @@ -180,6 +187,7 @@ struct pci_cap_saved_state { struct pcie_link_state; struct pci_vpd; +struct pci_sriov; /* * The pci_dev structure is used to describe PCI devices. @@ -257,6 +265,8 @@ struct pci_dev { unsigned int is_managed:1; unsigned int is_pcie:1; unsigned int state_saved:1; + unsigned int is_physfn:1; + unsigned int is_virtfn:1; pci_dev_flags_t dev_flags; atomic_t enable_cnt; /* pci_enable_device has been called */ @@ -270,6 +280,12 @@ struct pci_dev { struct list_head msi_list; #endif struct pci_vpd *vpd; +#ifdef CONFIG_PCI_IOV + union { + struct pci_sriov *sriov; /* SR-IOV capability related */ + struct pci_dev *physfn; /* the PF this VF is associated with */ + }; +#endif }; extern struct pci_dev *alloc_pci_dev(void); @@ -341,6 +357,15 @@ struct pci_bus { #define pci_bus_b(n) list_entry(n, struct pci_bus, node) #define to_pci_bus(n) container_of(n, struct pci_bus, dev) +/* + * Returns true if the pci bus is root (behind host-pci bridge), + * false otherwise + */ +static inline bool pci_is_root_bus(struct pci_bus *pbus) +{ + return !(pbus->parent); +} + #ifdef CONFIG_PCI_MSI static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { @@ -528,7 +553,7 @@ void pcibios_update_irq(struct pci_dev *, int irq); /* Generic PCI functions used internally */ extern struct pci_bus *pci_find_bus(int domain, int busnr); -void pci_bus_add_devices(struct pci_bus *bus); +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); static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops, @@ -649,6 +674,11 @@ int __must_check pci_reenable_device(struct pci_dev *); int __must_check pcim_enable_device(struct pci_dev *pdev); void pcim_pin_device(struct pci_dev *pdev); +static inline int pci_is_enabled(struct pci_dev *pdev) +{ + return (atomic_read(&pdev->enable_cnt) > 0); +} + static inline int pci_is_managed(struct pci_dev *pdev) { return pdev->is_managed; @@ -689,6 +719,7 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); /* Power management related routines */ int pci_save_state(struct pci_dev *dev); int pci_restore_state(struct pci_dev *dev); +int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); int pci_set_power_state(struct pci_dev *dev, pci_power_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); @@ -701,6 +732,9 @@ int pci_back_from_sleep(struct pci_dev *dev); /* Functions for PCI Hotplug drivers to use */ int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); +#ifdef CONFIG_HOTPLUG +unsigned int pci_rescan_bus(struct pci_bus *bus); +#endif /* Vital product data routines */ ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); @@ -708,7 +742,7 @@ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void int pci_vpd_truncate(struct pci_dev *dev, size_t size); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ -void pci_bus_assign_resources(struct pci_bus *bus); +void pci_bus_assign_resources(const struct pci_bus *bus); void pci_bus_size_bridges(struct pci_bus *bus); int pci_claim_resource(struct pci_dev *, int); void pci_assign_unassigned_resources(void); @@ -789,7 +823,7 @@ struct msix_entry { #ifndef CONFIG_PCI_MSI -static inline int pci_enable_msi(struct pci_dev *dev) +static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec) { return -1; } @@ -799,6 +833,10 @@ static inline void pci_msi_shutdown(struct pci_dev *dev) static inline void pci_disable_msi(struct pci_dev *dev) { } +static inline int pci_msix_table_size(struct pci_dev *dev) +{ + return 0; +} static inline int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec) { @@ -820,9 +858,10 @@ static inline int pci_msi_enabled(void) return 0; } #else -extern int pci_enable_msi(struct pci_dev *dev); +extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); 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); @@ -841,6 +880,8 @@ static inline int pcie_aspm_enabled(void) extern int pcie_aspm_enabled(void); #endif +#define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) + #ifdef CONFIG_HT_IRQ /* The functions a driver should call */ int ht_create_irq(struct pci_dev *dev, int idx); @@ -1194,5 +1235,23 @@ int pci_ext_cfg_avail(struct pci_dev *dev); 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); +#else +static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) +{ + return -ENODEV; +} +static inline void pci_disable_sriov(struct pci_dev *dev) +{ +} +static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev) +{ + return IRQ_NONE; +} +#endif + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |