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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2c204383a2
Introduce common interface acpi_pci_root_create() and related data structures to create PCI root bus for ACPI PCI host bridges. It will be used to kill duplicated arch specific code for IA64 and x86. It may also help ARM64 in future. Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/*
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* File pci-acpi.h
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*
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* Copyright (C) 2004 Intel
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* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
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*/
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#ifndef _PCI_ACPI_H_
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#define _PCI_ACPI_H_
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#include <linux/acpi.h>
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#ifdef CONFIG_ACPI
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extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
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static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
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{
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return acpi_remove_pm_notifier(dev);
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}
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extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
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struct pci_dev *pci_dev);
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static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
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{
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return acpi_remove_pm_notifier(dev);
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}
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extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
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static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
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{
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struct pci_bus *pbus = pdev->bus;
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/* Find a PCI root bus */
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while (!pci_is_root_bus(pbus))
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pbus = pbus->parent;
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return ACPI_HANDLE(pbus->bridge);
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}
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static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
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{
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struct device *dev;
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if (pci_is_root_bus(pbus))
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dev = pbus->bridge;
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else {
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/* If pbus is a virtual bus, there is no bridge to it */
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if (!pbus->self)
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return NULL;
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dev = &pbus->self->dev;
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}
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return ACPI_HANDLE(dev);
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}
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struct acpi_pci_root;
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struct acpi_pci_root_ops;
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struct acpi_pci_root_info {
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struct acpi_pci_root *root;
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struct acpi_device *bridge;
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struct acpi_pci_root_ops *ops;
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struct list_head resources;
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char name[16];
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};
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struct acpi_pci_root_ops {
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struct pci_ops *pci_ops;
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int (*init_info)(struct acpi_pci_root_info *info);
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void (*release_info)(struct acpi_pci_root_info *info);
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int (*prepare_resources)(struct acpi_pci_root_info *info);
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};
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extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
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extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
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struct acpi_pci_root_ops *ops,
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struct acpi_pci_root_info *info,
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void *sd);
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void acpi_pci_add_bus(struct pci_bus *bus);
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void acpi_pci_remove_bus(struct pci_bus *bus);
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#ifdef CONFIG_ACPI_PCI_SLOT
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void acpi_pci_slot_init(void);
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void acpi_pci_slot_enumerate(struct pci_bus *bus);
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void acpi_pci_slot_remove(struct pci_bus *bus);
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#else
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static inline void acpi_pci_slot_init(void) { }
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static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
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static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
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#endif
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#ifdef CONFIG_HOTPLUG_PCI_ACPI
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void acpiphp_init(void);
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void acpiphp_enumerate_slots(struct pci_bus *bus);
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void acpiphp_remove_slots(struct pci_bus *bus);
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void acpiphp_check_host_bridge(struct acpi_device *adev);
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#else
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static inline void acpiphp_init(void) { }
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static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
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static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
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static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
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#endif
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extern const u8 pci_acpi_dsm_uuid[];
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#define DEVICE_LABEL_DSM 0x07
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#define RESET_DELAY_DSM 0x08
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#define FUNCTION_DELAY_DSM 0x09
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#else /* CONFIG_ACPI */
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static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
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static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
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#endif /* CONFIG_ACPI */
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#ifdef CONFIG_ACPI_APEI
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extern bool aer_acpi_firmware_first(void);
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#else
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static inline bool aer_acpi_firmware_first(void) { return false; }
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#endif
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#endif /* _PCI_ACPI_H_ */
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