76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
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/*
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* QEMU support -- ARM Power Control specific functions.
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*
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* Copyright (c) 2016 Jean-Christophe Dubois
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_ARM_POWERCTL_H
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#define QEMU_ARM_POWERCTL_H
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#include "kvm-consts.h"
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#define QEMU_ARM_POWERCTL_RET_SUCCESS QEMU_PSCI_RET_SUCCESS
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#define QEMU_ARM_POWERCTL_INVALID_PARAM QEMU_PSCI_RET_INVALID_PARAMS
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#define QEMU_ARM_POWERCTL_ALREADY_ON QEMU_PSCI_RET_ALREADY_ON
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#define QEMU_ARM_POWERCTL_IS_OFF QEMU_PSCI_RET_DENIED
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/*
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* arm_get_cpu_by_id:
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* @cpuid: the id of the CPU we want to retrieve the state
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*
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* Retrieve a CPUState object from its CPU ID provided in @cpuid.
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*
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* Returns: a pointer to the CPUState structure of the requested CPU.
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*/
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CPUState *arm_get_cpu_by_id(uint64_t cpuid);
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/*
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* arm_set_cpu_on:
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* @cpuid: the id of the CPU we want to start/wake up.
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* @entry: the address the CPU shall start from.
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* @context_id: the value to put in r0/x0.
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* @target_el: The desired exception level.
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* @target_aa64: 1 if the requested mode is AArch64. 0 otherwise.
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*
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* Start the cpu designated by @cpuid in @target_el exception level. The mode
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* shall be AArch64 if @target_aa64 is set to 1. Otherwise the mode is
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* AArch32. The CPU shall start at @entry with @context_id in r0/x0.
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*
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* Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success.
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* QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided.
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* QEMU_ARM_POWERCTL_ALREADY_ON if the CPU was already started.
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*/
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int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id,
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uint32_t target_el, bool target_aa64);
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/*
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* arm_set_cpu_off:
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* @cpuid: the id of the CPU we want to stop/shut down.
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*
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* Stop the cpu designated by @cpuid.
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*
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* Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success.
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* QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided.
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* QEMU_ARM_POWERCTL_IS_OFF if CPU is already off
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*/
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int arm_set_cpu_off(uint64_t cpuid);
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/*
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* arm_reset_cpu:
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* @cpuid: the id of the CPU we want to reset.
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*
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* Reset the cpu designated by @cpuid.
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*
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* Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success.
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* QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided.
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* QEMU_ARM_POWERCTL_IS_OFF if CPU is off
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*/
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int arm_reset_cpu(uint64_t cpuid);
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#endif
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