diff options
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 97 |
1 files changed, 76 insertions, 21 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 4869e66dd659..0403894147a3 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * pci.h * @@ -102,6 +103,28 @@ enum { DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, }; +/** + * enum pci_interrupt_pin - PCI INTx interrupt values + * @PCI_INTERRUPT_UNKNOWN: Unknown or unassigned interrupt + * @PCI_INTERRUPT_INTA: PCI INTA pin + * @PCI_INTERRUPT_INTB: PCI INTB pin + * @PCI_INTERRUPT_INTC: PCI INTC pin + * @PCI_INTERRUPT_INTD: PCI INTD pin + * + * Corresponds to values for legacy PCI INTx interrupts, as can be found in the + * PCI_INTERRUPT_PIN register. + */ +enum pci_interrupt_pin { + PCI_INTERRUPT_UNKNOWN, + PCI_INTERRUPT_INTA, + PCI_INTERRUPT_INTB, + PCI_INTERRUPT_INTC, + PCI_INTERRUPT_INTD, +}; + +/* The number of legacy PCI INTx interrupts */ +#define PCI_NUM_INTX 4 + /* * pci_power_t values must match the bits in the Capabilities PME_Support * and Control/Status PowerState fields in the Power Management capability. @@ -183,11 +206,8 @@ enum pci_dev_flags { PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT = (__force pci_dev_flags_t) (1 << 9), /* Do not use FLR even if device advertises PCI_AF_CAP */ PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10), - /* - * Resume before calling the driver's system suspend hooks, disabling - * the direct_complete optimization. - */ - PCI_DEV_FLAGS_NEEDS_RESUME = (__force pci_dev_flags_t) (1 << 11), + /* Don't use Relaxed Ordering for TLPs directed at this device */ + PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11), }; enum pci_irq_reroute_variant { @@ -451,6 +471,7 @@ struct pci_host_bridge { void *release_data; struct msi_controller *msi; unsigned int ignore_reset_delay:1; /* for entire hierarchy */ + unsigned int no_ext_tags:1; /* no Extended Tags */ /* Resource alignment requirements */ resource_size_t (*align_resource)(struct pci_dev *dev, const struct resource *res, @@ -571,6 +592,10 @@ static inline bool pci_is_bridge(struct pci_dev *dev) dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; } +#define for_each_pci_bridge(dev, bus) \ + list_for_each_entry(dev, &bus->devices, bus_list) \ + if (!pci_is_bridge(dev)) {} else + static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) { dev = pci_physfn(dev); @@ -729,6 +754,7 @@ struct pci_driver { void (*shutdown) (struct pci_dev *dev); int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ const struct pci_error_handlers *err_handler; + const struct attribute_group **groups; struct device_driver driver; struct pci_dynids dynids; }; @@ -844,7 +870,6 @@ char *pcibios_setup(char *str); resource_size_t pcibios_align_resource(void *, const struct resource *, resource_size_t, resource_size_t); -void pcibios_update_irq(struct pci_dev *, int irq); /* Weak but can be overriden by arch */ void pci_fixup_cardbus(struct pci_bus *); @@ -1064,9 +1089,9 @@ int pcie_set_mps(struct pci_dev *dev, int mps); int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, enum pcie_link_width *width); void pcie_flr(struct pci_dev *dev); -int __pci_reset_function(struct pci_dev *dev); int __pci_reset_function_locked(struct pci_dev *dev); int pci_reset_function(struct pci_dev *dev); +int pci_reset_function_locked(struct pci_dev *dev); int pci_try_reset_function(struct pci_dev *dev); int pci_probe_reset_slot(struct pci_slot *slot); int pci_reset_slot(struct pci_slot *slot); @@ -1080,6 +1105,8 @@ void pci_reset_bridge_secondary_bus(struct pci_dev *dev); void pci_update_resource(struct pci_dev *dev, int resno); int __must_check pci_assign_resource(struct pci_dev *dev, int i); int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); +void pci_release_resource(struct pci_dev *dev, int resno); +int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size); int pci_select_bars(struct pci_dev *dev, unsigned long flags); bool pci_device_is_present(struct pci_dev *pdev); void pci_ignore_hotplug(struct pci_dev *dev); @@ -1125,6 +1152,7 @@ bool pci_check_pme_status(struct pci_dev *dev); void pci_pme_wakeup_bus(struct pci_bus *bus); void pci_d3cold_enable(struct pci_dev *dev); void pci_d3cold_disable(struct pci_dev *dev); +bool pcie_relaxed_ordering_enabled(struct pci_dev *dev); /* PCI Virtual Channel */ int pci_save_vc_state(struct pci_dev *dev); @@ -1158,10 +1186,9 @@ void pci_assign_unassigned_resources(void); void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); void pci_assign_unassigned_bus_resources(struct pci_bus *bus); void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); +int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type); void pdev_enable_device(struct pci_dev *); int pci_enable_resources(struct pci_dev *, int mask); -void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), - int (*)(const struct pci_dev *, u8, u8)); void pci_assign_irq(struct pci_dev *dev); struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res); #define HAVE_PCI_REQ_REGIONS 2 @@ -1394,6 +1421,38 @@ pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, NULL); } +/** + * pci_irqd_intx_xlate() - Translate PCI INTx value to an IRQ domain hwirq + * @d: the INTx IRQ domain + * @node: the DT node for the device whose interrupt we're translating + * @intspec: the interrupt specifier data from the DT + * @intsize: the number of entries in @intspec + * @out_hwirq: pointer at which to write the hwirq number + * @out_type: pointer at which to write the interrupt type + * + * Translate a PCI INTx interrupt number from device tree in the range 1-4, as + * stored in the standard PCI_INTERRUPT_PIN register, to a value in the range + * 0-3 suitable for use in a 4 entry IRQ domain. That is, subtract one from the + * INTx value to obtain the hwirq number. + * + * Returns 0 on success, or -EINVAL if the interrupt specifier is out of range. + */ +static inline int pci_irqd_intx_xlate(struct irq_domain *d, + struct device_node *node, + const u32 *intspec, + unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + const u32 intx = intspec[0]; + + if (intx < PCI_INTERRUPT_INTA || intx > PCI_INTERRUPT_INTD) + return -EINVAL; + + *out_hwirq = intx - PCI_INTERRUPT_INTA; + return 0; +} + #ifdef CONFIG_PCIEPORTBUS extern bool pcie_ports_disabled; extern bool pcie_ports_auto; @@ -1426,12 +1485,6 @@ static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } static inline void pcie_ecrc_get_policy(char *str) { } #endif -#ifdef CONFIG_HT_IRQ -/* The functions a driver should call */ -int ht_create_irq(struct pci_dev *dev, int idx); -void ht_destroy_irq(unsigned int irq); -#endif /* CONFIG_HT_IRQ */ - #ifdef CONFIG_PCI_ATS /* Address Translation Service */ void pci_ats_init(struct pci_dev *dev); @@ -1628,6 +1681,8 @@ static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } #define dev_is_pci(d) (false) #define dev_is_pf(d) (false) +static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags) +{ return false; } #endif /* CONFIG_PCI */ /* Include architecture-dependent settings and functions */ @@ -1899,8 +1954,8 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int id); int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); void pci_disable_sriov(struct pci_dev *dev); -int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset); -void pci_iov_remove_virtfn(struct pci_dev *dev, int id, int reset); +int pci_iov_add_virtfn(struct pci_dev *dev, int id); +void pci_iov_remove_virtfn(struct pci_dev *dev, int id); int pci_num_vf(struct pci_dev *dev); int pci_vfs_assigned(struct pci_dev *dev); int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); @@ -1917,12 +1972,12 @@ static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id) } static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) { return -ENODEV; } -static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset) +static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id) { return -ENOSYS; } static inline void pci_iov_remove_virtfn(struct pci_dev *dev, - int id, int reset) { } + int id) { } static inline void pci_disable_sriov(struct pci_dev *dev) { } static inline int pci_num_vf(struct pci_dev *dev) { return 0; } static inline int pci_vfs_assigned(struct pci_dev *dev) @@ -2059,7 +2114,7 @@ static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt) /** * pci_vpd_srdt_size - Extracts the Small Resource Data Type length - * @lrdt: Pointer to the beginning of the Small Resource Data Type tag + * @srdt: Pointer to the beginning of the Small Resource Data Type tag * * Returns the extracted Small Resource Data Type length. */ @@ -2070,7 +2125,7 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt) /** * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item - * @lrdt: Pointer to the beginning of the Small Resource Data Type tag + * @srdt: Pointer to the beginning of the Small Resource Data Type tag * * Returns the extracted Small Resource Data Type Tag Item. */ |