ce011e1363
PCI device passthrough enables an OS in a virtual machine to directly access a PCI device in the host. It promises almost the native performance, which is required in performance-critical scenarios of ACRN. HSM provides the following ioctls: - Assign - ACRN_IOCTL_ASSIGN_PCIDEV Pass data struct acrn_pcidev from userspace to the hypervisor, and inform the hypervisor to assign a PCI device to a User VM. - De-assign - ACRN_IOCTL_DEASSIGN_PCIDEV Pass data struct acrn_pcidev from userspace to the hypervisor, and inform the hypervisor to de-assign a PCI device from a User VM. - Set a interrupt of a passthrough device - ACRN_IOCTL_SET_PTDEV_INTR Pass data struct acrn_ptdev_irq from userspace to the hypervisor, and inform the hypervisor to map a INTx interrupt of passthrough device of User VM. - Reset passthrough device interrupt - ACRN_IOCTL_RESET_PTDEV_INTR Pass data struct acrn_ptdev_irq from userspace to the hypervisor, and inform the hypervisor to unmap a INTx interrupt of passthrough device of User VM. Cc: Zhi Wang <zhi.a.wang@intel.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Yu Wang <yu1.wang@intel.com> Cc: Reinette Chatre <reinette.chatre@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Zhi Wang <zhi.a.wang@intel.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Shuo Liu <shuo.a.liu@intel.com> Link: https://lore.kernel.org/r/20210207031040.49576-12-shuo.a.liu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
188 lines
4.8 KiB
C
188 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ACRN HSM: hypercalls of ACRN Hypervisor
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*/
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#ifndef __ACRN_HSM_HYPERCALL_H
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#define __ACRN_HSM_HYPERCALL_H
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#include <asm/acrn.h>
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/*
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* Hypercall IDs of the ACRN Hypervisor
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*/
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#define _HC_ID(x, y) (((x) << 24) | (y))
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#define HC_ID 0x80UL
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#define HC_ID_VM_BASE 0x10UL
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#define HC_CREATE_VM _HC_ID(HC_ID, HC_ID_VM_BASE + 0x00)
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#define HC_DESTROY_VM _HC_ID(HC_ID, HC_ID_VM_BASE + 0x01)
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#define HC_START_VM _HC_ID(HC_ID, HC_ID_VM_BASE + 0x02)
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#define HC_PAUSE_VM _HC_ID(HC_ID, HC_ID_VM_BASE + 0x03)
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#define HC_RESET_VM _HC_ID(HC_ID, HC_ID_VM_BASE + 0x05)
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#define HC_SET_VCPU_REGS _HC_ID(HC_ID, HC_ID_VM_BASE + 0x06)
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#define HC_ID_IOREQ_BASE 0x30UL
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#define HC_SET_IOREQ_BUFFER _HC_ID(HC_ID, HC_ID_IOREQ_BASE + 0x00)
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#define HC_NOTIFY_REQUEST_FINISH _HC_ID(HC_ID, HC_ID_IOREQ_BASE + 0x01)
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#define HC_ID_MEM_BASE 0x40UL
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#define HC_VM_SET_MEMORY_REGIONS _HC_ID(HC_ID, HC_ID_MEM_BASE + 0x02)
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#define HC_ID_PCI_BASE 0x50UL
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#define HC_SET_PTDEV_INTR _HC_ID(HC_ID, HC_ID_PCI_BASE + 0x03)
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#define HC_RESET_PTDEV_INTR _HC_ID(HC_ID, HC_ID_PCI_BASE + 0x04)
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#define HC_ASSIGN_PCIDEV _HC_ID(HC_ID, HC_ID_PCI_BASE + 0x05)
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#define HC_DEASSIGN_PCIDEV _HC_ID(HC_ID, HC_ID_PCI_BASE + 0x06)
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/**
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* hcall_create_vm() - Create a User VM
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* @vminfo: Service VM GPA of info of User VM creation
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_create_vm(u64 vminfo)
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{
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return acrn_hypercall1(HC_CREATE_VM, vminfo);
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}
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/**
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* hcall_start_vm() - Start a User VM
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* @vmid: User VM ID
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_start_vm(u64 vmid)
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{
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return acrn_hypercall1(HC_START_VM, vmid);
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}
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/**
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* hcall_pause_vm() - Pause a User VM
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* @vmid: User VM ID
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_pause_vm(u64 vmid)
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{
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return acrn_hypercall1(HC_PAUSE_VM, vmid);
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}
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/**
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* hcall_destroy_vm() - Destroy a User VM
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* @vmid: User VM ID
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_destroy_vm(u64 vmid)
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{
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return acrn_hypercall1(HC_DESTROY_VM, vmid);
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}
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/**
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* hcall_reset_vm() - Reset a User VM
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* @vmid: User VM ID
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_reset_vm(u64 vmid)
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{
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return acrn_hypercall1(HC_RESET_VM, vmid);
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}
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/**
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* hcall_set_vcpu_regs() - Set up registers of virtual CPU of a User VM
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* @vmid: User VM ID
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* @regs_state: Service VM GPA of registers state
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_set_vcpu_regs(u64 vmid, u64 regs_state)
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{
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return acrn_hypercall2(HC_SET_VCPU_REGS, vmid, regs_state);
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}
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/**
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* hcall_set_ioreq_buffer() - Set up the shared buffer for I/O Requests.
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* @vmid: User VM ID
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* @buffer: Service VM GPA of the shared buffer
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_set_ioreq_buffer(u64 vmid, u64 buffer)
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{
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return acrn_hypercall2(HC_SET_IOREQ_BUFFER, vmid, buffer);
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}
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/**
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* hcall_notify_req_finish() - Notify ACRN Hypervisor of I/O request completion.
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* @vmid: User VM ID
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* @vcpu: The vCPU which initiated the I/O request
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_notify_req_finish(u64 vmid, u64 vcpu)
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{
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return acrn_hypercall2(HC_NOTIFY_REQUEST_FINISH, vmid, vcpu);
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}
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/**
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* hcall_set_memory_regions() - Inform the hypervisor to set up EPT mappings
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* @regions_pa: Service VM GPA of &struct vm_memory_region_batch
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_set_memory_regions(u64 regions_pa)
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{
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return acrn_hypercall1(HC_VM_SET_MEMORY_REGIONS, regions_pa);
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}
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/**
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* hcall_assign_pcidev() - Assign a PCI device to a User VM
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* @vmid: User VM ID
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* @addr: Service VM GPA of the &struct acrn_pcidev
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_assign_pcidev(u64 vmid, u64 addr)
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{
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return acrn_hypercall2(HC_ASSIGN_PCIDEV, vmid, addr);
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}
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/**
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* hcall_deassign_pcidev() - De-assign a PCI device from a User VM
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* @vmid: User VM ID
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* @addr: Service VM GPA of the &struct acrn_pcidev
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_deassign_pcidev(u64 vmid, u64 addr)
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{
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return acrn_hypercall2(HC_DEASSIGN_PCIDEV, vmid, addr);
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}
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/**
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* hcall_set_ptdev_intr() - Configure an interrupt for an assigned PCI device.
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* @vmid: User VM ID
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* @irq: Service VM GPA of the &struct acrn_ptdev_irq
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_set_ptdev_intr(u64 vmid, u64 irq)
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{
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return acrn_hypercall2(HC_SET_PTDEV_INTR, vmid, irq);
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}
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/**
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* hcall_reset_ptdev_intr() - Reset an interrupt for an assigned PCI device.
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* @vmid: User VM ID
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* @irq: Service VM GPA of the &struct acrn_ptdev_irq
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*
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* Return: 0 on success, <0 on failure
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*/
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static inline long hcall_reset_ptdev_intr(u64 vmid, u64 irq)
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{
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return acrn_hypercall2(HC_RESET_PTDEV_INTR, vmid, irq);
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}
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#endif /* __ACRN_HSM_HYPERCALL_H */
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