diff options
Diffstat (limited to 'include/linux/pci-acpi.h')
| -rw-r--r-- | include/linux/pci-acpi.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h new file mode 100644 index 000000000..078225b51 --- /dev/null +++ b/include/linux/pci-acpi.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * File pci-acpi.h + * + * Copyright (C) 2004 Intel + * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) + */ + +#ifndef _PCI_ACPI_H_ +#define _PCI_ACPI_H_ + +#include <linux/acpi.h> + +#ifdef CONFIG_ACPI +extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev); +static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) +{ + return acpi_remove_pm_notifier(dev); +} +extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, + struct pci_dev *pci_dev); +static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) +{ + return acpi_remove_pm_notifier(dev); +} +extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle); + +struct pci_ecam_ops; +extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres, + const struct pci_ecam_ops **ecam_ops); + +static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) +{ + struct pci_bus *pbus = pdev->bus; + + /* Find a PCI root bus */ + while (!pci_is_root_bus(pbus)) + pbus = pbus->parent; + + return ACPI_HANDLE(pbus->bridge); +} + +static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) +{ + struct device *dev; + + if (pci_is_root_bus(pbus)) + dev = pbus->bridge; + else { + /* If pbus is a virtual bus, there is no bridge to it */ + if (!pbus->self) + return NULL; + + dev = &pbus->self->dev; + } + + return ACPI_HANDLE(dev); +} + +struct acpi_pci_root; +struct acpi_pci_root_ops; + +struct acpi_pci_root_info { + struct acpi_pci_root *root; + struct acpi_device *bridge; + struct acpi_pci_root_ops *ops; + struct list_head resources; + char name[16]; +}; + +struct acpi_pci_root_ops { + struct pci_ops *pci_ops; + int (*init_info)(struct acpi_pci_root_info *info); + void (*release_info)(struct acpi_pci_root_info *info); + int (*prepare_resources)(struct acpi_pci_root_info *info); +}; + +extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info); +extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, + struct acpi_pci_root_ops *ops, + struct acpi_pci_root_info *info, + void *sd); + +void acpi_pci_add_bus(struct pci_bus *bus); +void acpi_pci_remove_bus(struct pci_bus *bus); + +#ifdef CONFIG_PCI +void pci_acpi_setup(struct device *dev, struct acpi_device *adev); +void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev); +#else +static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {} +static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {} +#endif + +#ifdef CONFIG_ACPI_PCI_SLOT +void acpi_pci_slot_init(void); +void acpi_pci_slot_enumerate(struct pci_bus *bus); +void acpi_pci_slot_remove(struct pci_bus *bus); +#else +static inline void acpi_pci_slot_init(void) { } +static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } +static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } +#endif + +#ifdef CONFIG_HOTPLUG_PCI_ACPI +void acpiphp_init(void); +void acpiphp_enumerate_slots(struct pci_bus *bus); +void acpiphp_remove_slots(struct pci_bus *bus); +void acpiphp_check_host_bridge(struct acpi_device *adev); +#else +static inline void acpiphp_init(void) { } +static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } +static inline void acpiphp_remove_slots(struct pci_bus *bus) { } +static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } +#endif + +extern const guid_t pci_acpi_dsm_guid; + +/* _DSM Definitions for PCI */ +#define DSM_PCI_PRESERVE_BOOT_CONFIG 0x05 +#define DSM_PCI_DEVICE_NAME 0x07 +#define DSM_PCI_POWER_ON_RESET_DELAY 0x08 +#define DSM_PCI_DEVICE_READINESS_DURATIONS 0x09 + +#ifdef CONFIG_PCIE_EDR +void pci_acpi_add_edr_notifier(struct pci_dev *pdev); +void pci_acpi_remove_edr_notifier(struct pci_dev *pdev); +#else +static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { } +static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { } +#endif /* CONFIG_PCIE_EDR */ + +int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *)); +void pci_acpi_clear_companion_lookup_hook(void); + +#else /* CONFIG_ACPI */ +static inline void acpi_pci_add_bus(struct pci_bus *bus) { } +static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } +#endif /* CONFIG_ACPI */ + +#endif /* _PCI_ACPI_H_ */ |