diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci-acpi.h | 2 | ||||
| -rw-r--r-- | include/linux/pci-ecam.h | 67 | ||||
| -rw-r--r-- | include/linux/pci.h | 93 |
3 files changed, 153 insertions, 9 deletions
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 89ab0572dbc6..7d63a66e8ed4 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -24,6 +24,8 @@ static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) } extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle); +extern phys_addr_t pci_mcfg_lookup(u16 domain, struct resource *bus_res); + static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) { struct pci_bus *pbus = pdev->bus; diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h new file mode 100644 index 000000000000..7adad206b1f4 --- /dev/null +++ b/include/linux/pci-ecam.h @@ -0,0 +1,67 @@ +/* + * Copyright 2016 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation (the "GPL"). + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 (GPLv2) for more details. + * + * You should have received a copy of the GNU General Public License + * version 2 (GPLv2) along with this source code. + */ +#ifndef DRIVERS_PCI_ECAM_H +#define DRIVERS_PCI_ECAM_H + +#include <linux/kernel.h> +#include <linux/platform_device.h> + +/* + * struct to hold pci ops and bus shift of the config window + * for a PCI controller. + */ +struct pci_config_window; +struct pci_ecam_ops { + unsigned int bus_shift; + struct pci_ops pci_ops; + int (*init)(struct pci_config_window *); +}; + +/* + * struct to hold the mappings of a config space window. This + * is expected to be used as sysdata for PCI controllers that + * use ECAM. + */ +struct pci_config_window { + struct resource res; + struct resource busr; + void *priv; + struct pci_ecam_ops *ops; + union { + void __iomem *win; /* 64-bit single mapping */ + void __iomem **winp; /* 32-bit per-bus mapping */ + }; + struct device *parent;/* ECAM res was from this dev */ +}; + +/* create and free pci_config_window */ +struct pci_config_window *pci_ecam_create(struct device *dev, + struct resource *cfgres, struct resource *busr, + struct pci_ecam_ops *ops); +void pci_ecam_free(struct pci_config_window *cfg); + +/* map_bus when ->sysdata is an instance of pci_config_window */ +void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn, + int where); +/* default ECAM ops */ +extern struct pci_ecam_ops pci_generic_ecam_ops; + +#ifdef CONFIG_PCI_HOST_GENERIC +/* for DT-based PCI controllers that support ECAM */ +int pci_host_common_probe(struct platform_device *pdev, + struct pci_ecam_ops *ops); +#endif +#endif diff --git a/include/linux/pci.h b/include/linux/pci.h index c40ac910cce4..2599a980340f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -101,6 +101,10 @@ enum { DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, }; +/* + * pci_power_t values must match the bits in the Capabilities PME_Support + * and Control/Status PowerState fields in the Power Management capability. + */ typedef int __bitwise pci_power_t; #define PCI_D0 ((pci_power_t __force) 0) @@ -116,7 +120,7 @@ extern const char *pci_power_names[]; static inline const char *pci_power_name(pci_power_t state) { - return pci_power_names[1 + (int) state]; + return pci_power_names[1 + (__force int) state]; } #define PCI_PM_D2_DELAY 200 @@ -294,6 +298,7 @@ struct pci_dev { unsigned int d2_support:1; /* Low power state D2 is supported */ unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ unsigned int no_d3cold:1; /* D3cold is forbidden */ + unsigned int bridge_d3:1; /* Allow D3 for bridge */ unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ unsigned int mmio_always_on:1; /* disallow turning off io/mem decoding during bar sizing */ @@ -320,6 +325,7 @@ struct pci_dev { * directly, use the values stored here. They might be different! */ unsigned int irq; + struct cpumask *irq_affinity; struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ bool match_driver; /* Skip attaching driver */ @@ -1084,6 +1090,8 @@ int pci_back_from_sleep(struct pci_dev *dev); bool pci_dev_run_wake(struct pci_dev *dev); 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); static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable) @@ -1115,6 +1123,7 @@ int pci_set_vpd_size(struct pci_dev *dev, size_t len); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); void pci_bus_assign_resources(const struct pci_bus *bus); +void pci_bus_claim_resources(struct pci_bus *bus); void pci_bus_size_bridges(struct pci_bus *bus); int pci_claim_resource(struct pci_dev *, int); int pci_claim_bridge_resource(struct pci_dev *bridge, int i); @@ -1144,9 +1153,12 @@ void pci_add_resource(struct list_head *resources, struct resource *res); void pci_add_resource_offset(struct list_head *resources, struct resource *res, resource_size_t offset); void pci_free_resource_list(struct list_head *resources); -void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); +void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, + unsigned int flags); struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); void pci_bus_remove_resources(struct pci_bus *bus); +int devm_request_pci_bus_resources(struct device *dev, + struct list_head *resources); #define pci_bus_for_each_resource(bus, res, i) \ for (i = 0; \ @@ -1168,6 +1180,7 @@ int pci_register_io_range(phys_addr_t addr, resource_size_t size); unsigned long pci_address_to_pio(phys_addr_t addr); phys_addr_t pci_pio_to_address(unsigned long pio); int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr); +void pci_unmap_iospace(struct resource *res); static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar) { @@ -1238,6 +1251,11 @@ resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); int pci_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); +#define PCI_IRQ_NOLEGACY (1 << 0) /* don't use legacy interrupts */ +#define PCI_IRQ_NOMSI (1 << 1) /* don't use MSI interrupts */ +#define PCI_IRQ_NOMSIX (1 << 2) /* don't use MSI-X interrupts */ +#define PCI_IRQ_NOAFFINITY (1 << 3) /* don't auto-assign affinity */ + /* kmem_cache style wrapper around pci_alloc_consistent() */ #include <linux/pci-dma.h> @@ -1285,6 +1303,11 @@ static inline int pci_enable_msix_exact(struct pci_dev *dev, return rc; return 0; } +int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, + unsigned int max_vecs, unsigned int flags); +void pci_free_irq_vectors(struct pci_dev *dev); +int pci_irq_vector(struct pci_dev *dev, unsigned int nr); + #else static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } static inline void pci_msi_shutdown(struct pci_dev *dev) { } @@ -1308,6 +1331,24 @@ static inline int pci_enable_msix_range(struct pci_dev *dev, static inline int pci_enable_msix_exact(struct pci_dev *dev, struct msix_entry *entries, int nvec) { return -ENOSYS; } +static inline int pci_alloc_irq_vectors(struct pci_dev *dev, + unsigned int min_vecs, unsigned int max_vecs, + unsigned int flags) +{ + if (min_vecs > 1) + return -EINVAL; + return 1; +} +static inline void pci_free_irq_vectors(struct pci_dev *dev) +{ +} + +static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr) +{ + if (WARN_ON_ONCE(nr > 0)) + return -EINVAL; + return dev->irq; +} #endif #ifdef CONFIG_PCIEPORTBUS @@ -1390,12 +1431,13 @@ static inline int pci_domain_nr(struct pci_bus *bus) { return bus->domain_nr; } -void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent); +#ifdef CONFIG_ACPI +int acpi_pci_bus_find_domain_nr(struct pci_bus *bus); #else -static inline void pci_bus_assign_domain_nr(struct pci_bus *bus, - struct device *parent) -{ -} +static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus) +{ return 0; } +#endif +int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent); #endif /* some architectures require additional setup to direct VGA traffic */ @@ -1403,6 +1445,34 @@ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); void pci_register_set_vga_state(arch_set_vga_state_t func); +static inline int +pci_request_io_regions(struct pci_dev *pdev, const char *name) +{ + return pci_request_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_IO), name); +} + +static inline void +pci_release_io_regions(struct pci_dev *pdev) +{ + return pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_IO)); +} + +static inline int +pci_request_mem_regions(struct pci_dev *pdev, const char *name) +{ + return pci_request_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM), name); +} + +static inline void +pci_release_mem_regions(struct pci_dev *pdev) +{ + return pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM)); +} + #else /* CONFIG_PCI is not enabled */ static inline void pci_set_flags(int flags) { } @@ -1555,7 +1625,11 @@ static inline const char *pci_name(const struct pci_dev *pdev) /* Some archs don't want to expose struct resource to userland as-is * in sysfs and /proc */ -#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER +#ifdef HAVE_ARCH_PCI_RESOURCE_TO_USER +void pci_resource_to_user(const struct pci_dev *dev, int bar, + const struct resource *rsrc, + resource_size_t *start, resource_size_t *end); +#else static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, resource_size_t *start, resource_size_t *end) @@ -1707,6 +1781,7 @@ extern u8 pci_cache_line_size; extern unsigned long pci_hotplug_io_size; extern unsigned long pci_hotplug_mem_size; +extern unsigned long pci_hotplug_bus_size; /* Architecture-specific versions may override these (weak) */ void pcibios_disable_device(struct pci_dev *dev); @@ -1723,7 +1798,7 @@ void pcibios_free_irq(struct pci_dev *dev); extern struct dev_pm_ops pcibios_pm_ops; #endif -#ifdef CONFIG_PCI_MMCONFIG +#if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG) void __init pci_mmcfg_early_init(void); void __init pci_mmcfg_late_init(void); #else |