projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 825482ad JCD |
1 | /* |
| 2 | * QEMU support -- ARM Power Control specific functions. | |
| 3 | * | |
| 4 | * Copyright (c) 2016 Jean-Christophe Dubois | |
| 5 | * | |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
| 7 | * See the COPYING file in the top-level directory. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #ifndef QEMU_ARM_POWERCTL_H | |
| 12 | #define QEMU_ARM_POWERCTL_H | |
| 13 | ||
| 14 | #include "kvm-consts.h" | |
| 15 | ||
| 16 | #define QEMU_ARM_POWERCTL_RET_SUCCESS QEMU_PSCI_RET_SUCCESS | |
| 17 | #define QEMU_ARM_POWERCTL_INVALID_PARAM QEMU_PSCI_RET_INVALID_PARAMS | |
| 18 | #define QEMU_ARM_POWERCTL_ALREADY_ON QEMU_PSCI_RET_ALREADY_ON | |
| 19 | #define QEMU_ARM_POWERCTL_IS_OFF QEMU_PSCI_RET_DENIED | |
| 062ba099 | 20 | #define QEMU_ARM_POWERCTL_ON_PENDING QEMU_PSCI_RET_ON_PENDING |
| 825482ad JCD |
21 | |
| 22 | /* | |
| 23 | * arm_get_cpu_by_id: | |
| 24 | * @cpuid: the id of the CPU we want to retrieve the state | |
| 25 | * | |
| 26 | * Retrieve a CPUState object from its CPU ID provided in @cpuid. | |
| 27 | * | |
| 28 | * Returns: a pointer to the CPUState structure of the requested CPU. | |
| 29 | */ | |
| 30 | CPUState *arm_get_cpu_by_id(uint64_t cpuid); | |
| 31 | ||
| 32 | /* | |
| 33 | * arm_set_cpu_on: | |
| 34 | * @cpuid: the id of the CPU we want to start/wake up. | |
| 35 | * @entry: the address the CPU shall start from. | |
| 36 | * @context_id: the value to put in r0/x0. | |
| 37 | * @target_el: The desired exception level. | |
| 38 | * @target_aa64: 1 if the requested mode is AArch64. 0 otherwise. | |
| 39 | * | |
| 40 | * Start the cpu designated by @cpuid in @target_el exception level. The mode | |
| 41 | * shall be AArch64 if @target_aa64 is set to 1. Otherwise the mode is | |
| 42 | * AArch32. The CPU shall start at @entry with @context_id in r0/x0. | |
| 43 | * | |
| 44 | * Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success. | |
| 45 | * QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided. | |
| 46 | * QEMU_ARM_POWERCTL_ALREADY_ON if the CPU was already started. | |
| 062ba099 | 47 | * QEMU_ARM_POWERCTL_ON_PENDING if the CPU is still powering up |
| 825482ad JCD |
48 | */ |
| 49 | int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id, | |
| 50 | uint32_t target_el, bool target_aa64); | |
| 51 | ||
| 52 | /* | |
| 53 | * arm_set_cpu_off: | |
| 54 | * @cpuid: the id of the CPU we want to stop/shut down. | |
| 55 | * | |
| 56 | * Stop the cpu designated by @cpuid. | |
| 57 | * | |
| 58 | * Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success. | |
| 59 | * QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided. | |
| 60 | * QEMU_ARM_POWERCTL_IS_OFF if CPU is already off | |
| 61 | */ | |
| 62 | ||
| 63 | int arm_set_cpu_off(uint64_t cpuid); | |
| 64 | ||
| 65 | /* | |
| 66 | * arm_reset_cpu: | |
| 67 | * @cpuid: the id of the CPU we want to reset. | |
| 68 | * | |
| 69 | * Reset the cpu designated by @cpuid. | |
| 70 | * | |
| 71 | * Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success. | |
| 72 | * QEMU_ARM_POWERCTL_INVALID_PARAM if bad parameters are provided. | |
| 73 | * QEMU_ARM_POWERCTL_IS_OFF if CPU is off | |
| 74 | */ | |
| 75 | int arm_reset_cpu(uint64_t cpuid); | |
| 76 | ||
| 77 | #endif |