426 lines
12 KiB
C
426 lines
12 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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/**
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* @file hypercall.h
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*
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* @brief public APIs for hypercall
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*/
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#ifndef HYPERCALL_H
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#define HYPERCALL_H
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struct vhm_request;
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bool is_hypercall_from_ring0(void);
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/**
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* @brief Hypercall
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*
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* @addtogroup acrn_hypercall ACRN Hypercall
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* @{
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*/
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/**
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* @brief offline vcpu from SOS
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*
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* The function offline specific vcpu from SOS.
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*
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* @param vm Pointer to VM data structure
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* @param lapicid lapic id of the vcpu which wants to offline
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_sos_offline_cpu(struct acrn_vm *vm, uint64_t lapicid);
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/**
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* @brief Get hypervisor api version
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*
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* The function only return api version information when VM is VM0.
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*
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* @param vm Pointer to VM data structure
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* @param param guest physical memory address. The api version returned
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* will be copied to this gpa
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_get_api_version(struct acrn_vm *vm, uint64_t param);
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/**
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* @brief create virtual machine
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*
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* Create a virtual machine based on parameter, currently there is no
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* limitation for calling times of this function, will add MAX_VM_NUM
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* support later.
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*
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* @param vm Pointer to VM data structure
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* @param param guest physical memory address. This gpa points to
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* struct acrn_create_vm
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_create_vm(struct acrn_vm *vm, uint64_t param);
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/**
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* @brief destroy virtual machine
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*
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* Destroy a virtual machine, it will pause target VM then shutdown it.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vmid ID of the VM
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_destroy_vm(uint16_t vmid);
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/**
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* @brief reset virtual machine
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*
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* Reset a virtual machine, it will make target VM rerun from
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* pre-defined entry. Comparing to start vm, this function reset
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* each vcpu state and do some initialization for guest.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vmid ID of the VM
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_reset_vm(uint16_t vmid);
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/**
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* @brief start virtual machine
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*
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* Start a virtual machine, it will schedule target VM's vcpu to run.
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* The function will return -1 if the target VM does not exist or the
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* IOReq buffer page for the VM is not ready.
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*
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* @param vmid ID of the VM
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_start_vm(uint16_t vmid);
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/**
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* @brief pause virtual machine
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*
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* Pause a virtual machine, if the VM is already paused, the function
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* will return 0 directly for success.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vmid ID of the VM
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_pause_vm(uint16_t vmid);
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/**
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* @brief create vcpu
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*
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* Create a vcpu based on parameter for a VM, it will allocate vcpu from
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* freed physical cpus, if there is no available pcpu, the function will
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* return -1.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to
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* struct acrn_create_vcpu
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_create_vcpu(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief set vcpu regs
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*
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* Set the vcpu regs. It will set the vcpu init regs from DM. Now,
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* it's only applied to BSP. AP always uses fixed init regs.
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* The function will return -1 if the targat VM or BSP doesn't exist.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to
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* struct acrn_vcpu_regs
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_vcpu_regs(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief set or clear IRQ line
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*
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* Set or clear a virtual IRQ line for a VM, which could be from ISA
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* or IOAPIC, normally it triggers an edge IRQ.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param ops request command for IRQ set or clear
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_irqline(const struct acrn_vm *vm, uint16_t vmid,
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const struct acrn_irqline_ops *ops);
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/**
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* @brief inject MSI interrupt
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*
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* Inject a MSI interrupt for a VM.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to struct acrn_msi_entry
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_inject_msi(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief set ioreq shared buffer
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*
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* Set the ioreq share buffer for a VM.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to
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* struct acrn_set_ioreq_buffer
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_ioreq_buffer(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief notify request done
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*
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* Notify the requestor VCPU for the completion of an ioreq.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vmid ID of the VM
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* @param vcpu_id vcpu ID of the requestor
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_notify_ioreq_finish(uint16_t vmid, uint16_t vcpu_id);
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/**
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* @brief setup ept memory mapping for multi regions
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*
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* @param vm Pointer to VM data structure
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* @param param guest physical address. This gpa points to
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* struct set_memmaps
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_vm_memory_regions(struct acrn_vm *vm, uint64_t param);
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/**
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* @brief change guest memory page write permission
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param wp_gpa guest physical address. This gpa points to
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* struct wp_data
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_write_protect_page(struct acrn_vm *vm, uint16_t vmid, uint64_t wp_gpa);
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/**
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* @brief translate guest physical address to host physical address
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*
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* Translate guest physical address to host physical address for a VM.
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* The function will return -1 if the target VM does not exist.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to struct vm_gpa2hpa
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_gpa_to_hpa(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief Assign one passthrough dev to VM.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param the physical BDF of the assigning ptdev
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* To keep the compatibility it still can be the guest physical address that
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* points to the physical BDF of the assigning ptdev.(Depreciated)
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_assign_ptdev(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief Deassign one passthrough dev from VM.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param the physical BDF of the deassigning ptdev
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* To keep the compatibility it still can be the guest physical address that
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* points to the physical BDF of the deassigning ptdev.(Depreciated)
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_deassign_ptdev(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief Set interrupt mapping info of ptdev.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to data structure of
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* hc_ptdev_irq including intr remapping info
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_ptdev_intr_info(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @brief Clear interrupt mapping info of ptdev.
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*
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* @param vm Pointer to VM data structure
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* @param vmid ID of the VM
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* @param param guest physical address. This gpa points to data structure of
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* hc_ptdev_irq including intr remapping info
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_reset_ptdev_intr_info(struct acrn_vm *vm, uint16_t vmid,
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uint64_t param);
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/**
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* @brief Setup hypervisor debug infrastructure, such as share buffer, NPK log and profiling.
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*
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* @param vm Pointer to VM data structure
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* @param param1 hypercall param1 from guest
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* @param param2 hypercall param2 from guest
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* @param hypcall_id hypercall ID from guest
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_debug(struct acrn_vm *vm, uint64_t param1, uint64_t param2, uint64_t hypcall_id);
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/**
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* @brief Get VCPU Power state.
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*
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* @param vm pointer to VM data structure
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* @param cmd cmd to show get which VCPU power state data
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* @param param VCPU power state data
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_get_cpu_pm_state(struct acrn_vm *vm, uint64_t cmd, uint64_t param);
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/**
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* @brief Get VCPU a VM's interrupt count data.
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*
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* @param vm pointer to VM data structure
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* @param vmid id of the VM
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* @param param guest physical address. This gpa points to data structure of
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* acrn_intr_monitor
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_vm_intr_monitor(struct acrn_vm *vm, uint16_t vmid, uint64_t param);
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/**
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* @defgroup trusty_hypercall Trusty Hypercalls
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*
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* This is a special group that includes all hypercalls
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* related to Trusty
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*
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* @{
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*/
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/**
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* @brief Switch vCPU state between Normal/Secure World.
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*
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* * The hypervisor uses this hypercall to do the world switch
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* * The hypervisor needs to:
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* * save current world vCPU contexts, and load the next world
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* vCPU contexts
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* * update ``rdi``, ``rsi``, ``rdx``, ``rbx`` to next world
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* vCPU contexts
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*
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* @param vcpu Pointer to VCPU data structure
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_world_switch(struct acrn_vcpu *vcpu);
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/**
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* @brief Initialize environment for Trusty-OS on a vCPU.
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*
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* * It is used by the User OS bootloader (``UOS_Loader``) to request ACRN
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* to initialize Trusty
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* * The Trusty memory region range, entry point must be specified
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* * The hypervisor needs to save current vCPU contexts (Normal World)
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*
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* @param vcpu Pointer to vCPU data structure
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* @param param guest physical address. This gpa points to
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* trusty_boot_param structure
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_initialize_trusty(struct acrn_vcpu *vcpu, uint64_t param);
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/**
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* @brief Save/Restore Context of Secure World.
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*
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* @param vcpu Pointer to VCPU data structure
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*
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_save_restore_sworld_ctx(struct acrn_vcpu *vcpu);
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/**
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* @}
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*/
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/* End of trusty_hypercall */
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/**
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* @brief set upcall notifier vector
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*
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* This is the API that helps to switch the notifer vecotr. If this API is
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* not called, the hypervisor will use the default notifier vector(0xF7)
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* to notify the SOS kernel.
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*
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* @param vm Pointer to VM data structure
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* @param param the expected notifier vector from guest
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*
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* @pre Pointer vm shall point to VM0
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* @return 0 on success, non-zero on error.
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*/
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int32_t hcall_set_callback_vector(const struct acrn_vm *vm, uint64_t param);
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/**
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* @}
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*/
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/* End of acrn_hypercall */
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#endif /* HYPERCALL_H*/
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