forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.8 KiB
136 lines
3.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* A sample program to run a User VM on the ACRN hypervisor |
|
* |
|
* This sample runs in a Service VM, which is a privileged VM of ACRN. |
|
* CONFIG_ACRN_HSM need to be enabled in the Service VM. |
|
* |
|
* Guest VM code in guest16.s will be executed after the VM launched. |
|
* |
|
* Copyright (C) 2020 Intel Corporation. All rights reserved. |
|
*/ |
|
#include <stdio.h> |
|
#include <stdint.h> |
|
#include <stdlib.h> |
|
#include <string.h> |
|
#include <malloc.h> |
|
#include <fcntl.h> |
|
#include <unistd.h> |
|
#include <signal.h> |
|
#include <sys/ioctl.h> |
|
#include <linux/acrn.h> |
|
|
|
#define GUEST_MEMORY_SIZE (1024*1024) |
|
void *guest_memory; |
|
|
|
extern const unsigned char guest16[], guest16_end[]; |
|
static char io_request_page[4096] __attribute__((aligned(4096))); |
|
static struct acrn_io_request *io_req_buf = (struct acrn_io_request *)io_request_page; |
|
|
|
__u16 vcpu_num; |
|
__u16 vmid; |
|
/* POST_STANDARD_VM_UUID1, refer to https://github.com/projectacrn/acrn-hypervisor/blob/master/hypervisor/include/common/vm_uuids.h */ |
|
guid_t vm_uuid = GUID_INIT(0x385479d2, 0xd625, 0xe811, 0x86, 0x4e, 0xcb, 0x7a, 0x18, 0xb3, 0x46, 0x43); |
|
|
|
int hsm_fd; |
|
int is_running = 1; |
|
|
|
void vm_exit(int sig) |
|
{ |
|
sig = sig; |
|
|
|
is_running = 0; |
|
ioctl(hsm_fd, ACRN_IOCTL_PAUSE_VM, vmid); |
|
ioctl(hsm_fd, ACRN_IOCTL_DESTROY_IOREQ_CLIENT, 0); |
|
} |
|
|
|
int main(int argc, char **argv) |
|
{ |
|
int vcpu_id, ret; |
|
struct acrn_vm_creation create_vm = {0}; |
|
struct acrn_vm_memmap ram_map = {0}; |
|
struct acrn_vcpu_regs regs; |
|
struct acrn_io_request *io_req; |
|
struct acrn_ioreq_notify __attribute__((aligned(8))) notify; |
|
|
|
argc = argc; |
|
argv = argv; |
|
|
|
guest_memory = memalign(4096, GUEST_MEMORY_SIZE); |
|
if (!guest_memory) { |
|
printf("No enough memory!\n"); |
|
return -1; |
|
} |
|
hsm_fd = open("/dev/acrn_hsm", O_RDWR|O_CLOEXEC); |
|
|
|
memcpy(&create_vm.uuid, &vm_uuid, 16); |
|
create_vm.ioreq_buf = (__u64)io_req_buf; |
|
ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_VM, &create_vm); |
|
printf("Created VM! [%d]\n", ret); |
|
vcpu_num = create_vm.vcpu_num; |
|
vmid = create_vm.vmid; |
|
|
|
/* setup guest memory */ |
|
ram_map.type = ACRN_MEMMAP_RAM; |
|
ram_map.vma_base = (__u64)guest_memory; |
|
ram_map.len = GUEST_MEMORY_SIZE; |
|
ram_map.user_vm_pa = 0; |
|
ram_map.attr = ACRN_MEM_ACCESS_RWX; |
|
ret = ioctl(hsm_fd, ACRN_IOCTL_SET_MEMSEG, &ram_map); |
|
printf("Set up VM memory! [%d]\n", ret); |
|
|
|
memcpy(guest_memory, guest16, guest16_end-guest16); |
|
|
|
/* setup vcpu registers */ |
|
memset(®s, 0, sizeof(regs)); |
|
regs.vcpu_id = 0; |
|
regs.vcpu_regs.rip = 0; |
|
|
|
/* CR0_ET | CR0_NE */ |
|
regs.vcpu_regs.cr0 = 0x30U; |
|
regs.vcpu_regs.cs_ar = 0x009FU; |
|
regs.vcpu_regs.cs_sel = 0xF000U; |
|
regs.vcpu_regs.cs_limit = 0xFFFFU; |
|
regs.vcpu_regs.cs_base = 0 & 0xFFFF0000UL; |
|
regs.vcpu_regs.rip = 0 & 0xFFFFUL; |
|
|
|
ret = ioctl(hsm_fd, ACRN_IOCTL_SET_VCPU_REGS, ®s); |
|
printf("Set up VM BSP registers! [%d]\n", ret); |
|
|
|
/* create an ioreq client for this VM */ |
|
ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_IOREQ_CLIENT, 0); |
|
printf("Created IO request client! [%d]\n", ret); |
|
|
|
/* run vm */ |
|
ret = ioctl(hsm_fd, ACRN_IOCTL_START_VM, vmid); |
|
printf("Start VM! [%d]\n", ret); |
|
|
|
signal(SIGINT, vm_exit); |
|
while (is_running) { |
|
ret = ioctl(hsm_fd, ACRN_IOCTL_ATTACH_IOREQ_CLIENT, 0); |
|
|
|
for (vcpu_id = 0; vcpu_id < vcpu_num; vcpu_id++) { |
|
io_req = &io_req_buf[vcpu_id]; |
|
if ((__sync_add_and_fetch(&io_req->processed, 0) == ACRN_IOREQ_STATE_PROCESSING) |
|
&& (!io_req->kernel_handled)) |
|
if (io_req->type == ACRN_IOREQ_TYPE_PORTIO) { |
|
int bytes, port, in; |
|
|
|
port = io_req->reqs.pio_request.address; |
|
bytes = io_req->reqs.pio_request.size; |
|
in = (io_req->reqs.pio_request.direction == ACRN_IOREQ_DIR_READ); |
|
printf("Guest VM %s PIO[%x] with size[%x]\n", in ? "read" : "write", port, bytes); |
|
|
|
notify.vmid = vmid; |
|
notify.vcpu = vcpu_id; |
|
ioctl(hsm_fd, ACRN_IOCTL_NOTIFY_REQUEST_FINISH, ¬ify); |
|
} |
|
} |
|
} |
|
|
|
ret = ioctl(hsm_fd, ACRN_IOCTL_DESTROY_VM, NULL); |
|
printf("Destroy VM! [%d]\n", ret); |
|
close(hsm_fd); |
|
free(guest_memory); |
|
return 0; |
|
}
|
|
|