diff options
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 79 |
1 files changed, 74 insertions, 5 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 14d00ce45bfa..2e40fc63ba31 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -104,6 +104,7 @@ bool pci_reset_supported(struct pci_dev *dev); void pci_init_reset_methods(struct pci_dev *dev); int pci_bridge_secondary_bus_reset(struct pci_dev *dev); int pci_bus_error_reset(struct pci_dev *dev); +int __pci_reset_bus(struct pci_bus *bus); struct pci_cap_saved_data { u16 cap_nr; @@ -323,6 +324,9 @@ void __pci_bus_assign_resources(const struct pci_bus *bus, struct list_head *realloc_head, struct list_head *fail_head); bool pci_bus_clip_resource(struct pci_dev *dev, int idx); +void pci_walk_bus_locked(struct pci_bus *top, + int (*cb)(struct pci_dev *, void *), + void *userdata); const char *pci_resource_name(struct pci_dev *dev, unsigned int i); @@ -331,6 +335,17 @@ void pci_disable_bridge_window(struct pci_dev *dev); struct pci_bus *pci_bus_get(struct pci_bus *bus); void pci_bus_put(struct pci_bus *bus); +#define PCIE_LNKCAP_SLS2SPEED(lnkcap) \ +({ \ + ((lnkcap) == PCI_EXP_LNKCAP_SLS_64_0GB ? PCIE_SPEED_64_0GT : \ + (lnkcap) == PCI_EXP_LNKCAP_SLS_32_0GB ? PCIE_SPEED_32_0GT : \ + (lnkcap) == PCI_EXP_LNKCAP_SLS_16_0GB ? PCIE_SPEED_16_0GT : \ + (lnkcap) == PCI_EXP_LNKCAP_SLS_8_0GB ? PCIE_SPEED_8_0GT : \ + (lnkcap) == PCI_EXP_LNKCAP_SLS_5_0GB ? PCIE_SPEED_5_0GT : \ + (lnkcap) == PCI_EXP_LNKCAP_SLS_2_5GB ? PCIE_SPEED_2_5GT : \ + PCI_SPEED_UNKNOWN); \ +}) + /* PCIe link information from Link Capabilities 2 */ #define PCIE_LNKCAP2_SLS2SPEED(lnkcap2) \ ((lnkcap2) & PCI_EXP_LNKCAP2_SLS_64_0GB ? PCIE_SPEED_64_0GT : \ @@ -341,6 +356,15 @@ void pci_bus_put(struct pci_bus *bus); (lnkcap2) & PCI_EXP_LNKCAP2_SLS_2_5GB ? PCIE_SPEED_2_5GT : \ PCI_SPEED_UNKNOWN) +#define PCIE_LNKCTL2_TLS2SPEED(lnkctl2) \ + ((lnkctl2) == PCI_EXP_LNKCTL2_TLS_64_0GT ? PCIE_SPEED_64_0GT : \ + (lnkctl2) == PCI_EXP_LNKCTL2_TLS_32_0GT ? PCIE_SPEED_32_0GT : \ + (lnkctl2) == PCI_EXP_LNKCTL2_TLS_16_0GT ? PCIE_SPEED_16_0GT : \ + (lnkctl2) == PCI_EXP_LNKCTL2_TLS_8_0GT ? PCIE_SPEED_8_0GT : \ + (lnkctl2) == PCI_EXP_LNKCTL2_TLS_5_0GT ? PCIE_SPEED_5_0GT : \ + (lnkctl2) == PCI_EXP_LNKCTL2_TLS_2_5GT ? PCIE_SPEED_2_5GT : \ + PCI_SPEED_UNKNOWN) + /* PCIe speed to Mb/s reduced by encoding overhead */ #define PCIE_SPEED2MBS_ENC(speed) \ ((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \ @@ -373,12 +397,16 @@ static inline int pcie_dev_speed_mbps(enum pci_bus_speed speed) return -EINVAL; } +u8 pcie_get_supported_speeds(struct pci_dev *dev); const char *pci_speed_string(enum pci_bus_speed speed); -enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev); -enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev); void __pcie_print_link_status(struct pci_dev *dev, bool verbose); void pcie_report_downtraining(struct pci_dev *dev); -void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); + +static inline void __pcie_update_link_speed(struct pci_bus *bus, u16 linksta) +{ + bus->cur_bus_speed = pcie_link_speed[linksta & PCI_EXP_LNKSTA_CLS]; +} +void pcie_update_link_speed(struct pci_bus *bus); /* Single Root I/O Virtualization */ struct pci_sriov { @@ -469,10 +497,18 @@ static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused) #define PCI_DEV_ADDED 0 #define PCI_DPC_RECOVERED 1 #define PCI_DPC_RECOVERING 2 +#define PCI_DEV_REMOVED 3 -static inline void pci_dev_assign_added(struct pci_dev *dev, bool added) +static inline void pci_dev_assign_added(struct pci_dev *dev) { - assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added); + smp_mb__before_atomic(); + set_bit(PCI_DEV_ADDED, &dev->priv_flags); + smp_mb__after_atomic(); +} + +static inline bool pci_dev_test_and_clear_added(struct pci_dev *dev) +{ + return test_and_clear_bit(PCI_DEV_ADDED, &dev->priv_flags); } static inline bool pci_dev_is_added(const struct pci_dev *dev) @@ -480,6 +516,11 @@ static inline bool pci_dev_is_added(const struct pci_dev *dev) return test_bit(PCI_DEV_ADDED, &dev->priv_flags); } +static inline bool pci_dev_test_and_set_removed(struct pci_dev *dev) +{ + return test_and_set_bit(PCI_DEV_REMOVED, &dev->priv_flags); +} + #ifdef CONFIG_PCIEAER #include <linux/aer.h> @@ -597,6 +638,18 @@ static inline int pci_iov_bus_range(struct pci_bus *bus) #endif /* CONFIG_PCI_IOV */ +#ifdef CONFIG_PCIE_TPH +void pci_restore_tph_state(struct pci_dev *dev); +void pci_save_tph_state(struct pci_dev *dev); +void pci_no_tph(void); +void pci_tph_init(struct pci_dev *dev); +#else +static inline void pci_restore_tph_state(struct pci_dev *dev) { } +static inline void pci_save_tph_state(struct pci_dev *dev) { } +static inline void pci_no_tph(void) { } +static inline void pci_tph_init(struct pci_dev *dev) { } +#endif + #ifdef CONFIG_PCIE_PTM void pci_ptm_init(struct pci_dev *dev); void pci_save_ptm_state(struct pci_dev *dev); @@ -692,6 +745,17 @@ static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } static inline void pcie_ecrc_get_policy(char *str) { } #endif +#ifdef CONFIG_PCIEPORTBUS +void pcie_reset_lbms_count(struct pci_dev *port); +int pcie_lbms_count(struct pci_dev *port, unsigned long *val); +#else +static inline void pcie_reset_lbms_count(struct pci_dev *port) {} +static inline int pcie_lbms_count(struct pci_dev *port, unsigned long *val) +{ + return -EOPNOTSUPP; +} +#endif + struct pci_dev_reset_methods { u16 vendor; u16 device; @@ -746,6 +810,7 @@ void pci_set_bus_of_node(struct pci_bus *bus); void pci_release_bus_of_node(struct pci_bus *bus); int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge); +bool of_pci_supply_present(struct device_node *np); #else static inline int @@ -793,6 +858,10 @@ static inline int devm_of_pci_bridge_init(struct device *dev, struct pci_host_br return 0; } +static inline bool of_pci_supply_present(struct device_node *np) +{ + return false; +} #endif /* CONFIG_OF */ struct of_changeset; |