mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 06:56:52 +07:00
3b63aaa70e
Previously the acpiphp driver registered itself as an ACPI PCI subdriver,
so its callbacks were invoked when creating/destroying PCI root
buses to manage ACPI-based PCI hotplug slots. But it doesn't handle
P2P bridge hotplug events, so it will cause strange behaviour if there
are hotplug slots associated with a hot-removed P2P bridge.
This patch fixes this issue by:
1) Directly hooking into PCI core to update hotplug slot devices when
creating/destroying PCI buses through:
pci_{add|remove}_bus() -> acpi_pci_{add|remove}_bus()
2) Getting rid of unused ACPI PCI subdriver-related code
It also cleans up unused code in the acpiphp driver.
[bhelgaas: keep acpi_pci_add_bus() stub for CONFIG_ACPI=n]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/*
|
|
* 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,
|
|
struct pci_bus *pci_bus);
|
|
extern acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev);
|
|
extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
|
|
struct pci_dev *pci_dev);
|
|
extern acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev);
|
|
extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
|
|
|
|
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 DEVICE_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
|
|
dev = &pbus->self->dev;
|
|
|
|
return DEVICE_ACPI_HANDLE(dev);
|
|
}
|
|
|
|
void acpi_pci_add_bus(struct pci_bus *bus);
|
|
void acpi_pci_remove_bus(struct pci_bus *bus);
|
|
|
|
#ifdef CONFIG_ACPI_PCI_SLOT
|
|
void acpi_pci_slot_init(void);
|
|
void acpi_pci_slot_enumerate(struct pci_bus *bus, acpi_handle handle);
|
|
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,
|
|
acpi_handle handle) { }
|
|
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, acpi_handle handle);
|
|
void acpiphp_remove_slots(struct pci_bus *bus);
|
|
#else
|
|
static inline void acpiphp_init(void) { }
|
|
static inline void acpiphp_enumerate_slots(struct pci_bus *bus,
|
|
acpi_handle handle) { }
|
|
static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
|
|
#endif
|
|
|
|
#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 */
|
|
|
|
#ifdef CONFIG_ACPI_APEI
|
|
extern bool aer_acpi_firmware_first(void);
|
|
#else
|
|
static inline bool aer_acpi_firmware_first(void) { return false; }
|
|
#endif
|
|
|
|
#endif /* _PCI_ACPI_H_ */
|