OvmfPkg/ResetSystemLib: clean up library dependencies

[mirror_edk2.git] / OvmfPkg / CpuHotplugSmm / QemuCpuhp.h

/** @file\r
  Simple wrapper functions and utility functions that access QEMU's modern CPU\r
  hotplug register block.\r
\r
  These functions manipulate some of the registers described in\r
  "docs/specs/acpi_cpu_hotplug.txt" in the QEMU source. IO Ports are accessed\r
  via EFI_MM_CPU_IO_PROTOCOL. If a protocol call fails, these functions don't\r
  return.\r
\r
  Copyright (c) 2020, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
**/\r
\r
#ifndef QEMU_CPUHP_H_\r
#define QEMU_CPUHP_H_\r
\r
#include <Protocol/MmCpuIo.h>  // EFI_MM_CPU_IO_PROTOCOL\r
#include <Uefi/UefiBaseType.h> // EFI_STATUS\r
\r
#include "ApicId.h"            // APIC_ID\r
\r
UINT32\r
QemuCpuhpReadCommandData2 (\r
  IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo\r
  );\r
\r
UINT8\r
QemuCpuhpReadCpuStatus (\r
  IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo\r
  );\r
\r
UINT32\r
QemuCpuhpReadCommandData (\r
  IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo\r
  );\r
\r
VOID\r
QemuCpuhpWriteCpuSelector (\r
  IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo,\r
  IN UINT32                       Selector\r
  );\r
\r
VOID\r
QemuCpuhpWriteCommand (\r
  IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo,\r
  IN UINT8                        Command\r
  );\r
\r
EFI_STATUS\r
QemuCpuhpCollectApicIds (\r
  IN  CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo,\r
  IN  UINT32                       PossibleCpuCount,\r
  IN  UINT32                       ApicIdCount,\r
  OUT APIC_ID                      *PluggedApicIds,\r
  OUT UINT32                       *PluggedCount,\r
  OUT APIC_ID                      *ToUnplugApicIds,\r
  OUT UINT32                       *ToUnplugCount\r
  );\r
\r
#endif // QEMU_CPUHP_H_\r