| /* |
| * QEMU HAXM support |
| * |
| * Copyright (c) 2011 Intel Corporation |
| * Written by: |
| * Jiang Yunhong<yunhong.jiang@intel.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "cpu.h" |
| #include "hax-cpus.h" |
| |
| /* |
| * return 0 when success, -1 when driver not loaded, |
| * other negative value for other failure |
| */ |
| static int hax_open_device(hax_fd *fd) |
| { |
| uint32_t errNum = 0; |
| HANDLE hDevice; |
| |
| if (!fd) { |
| return -2; |
| } |
| |
| hDevice = CreateFile("\\\\.\\HAX", |
| GENERIC_READ | GENERIC_WRITE, |
| 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| |
| if (hDevice == INVALID_HANDLE_VALUE) { |
| fprintf(stderr, "Failed to open the HAX device!\n"); |
| errNum = GetLastError(); |
| if (errNum == ERROR_FILE_NOT_FOUND) { |
| return -1; |
| } |
| return -2; |
| } |
| *fd = hDevice; |
| return 0; |
| } |
| |
| /* hax_fd hax_mod_open */ |
| hax_fd hax_mod_open(void) |
| { |
| int ret; |
| hax_fd fd = NULL; |
| |
| ret = hax_open_device(&fd); |
| if (ret != 0) { |
| fprintf(stderr, "Open HAX device failed\n"); |
| } |
| |
| return fd; |
| } |
| |
| int hax_populate_ram(uint64_t va, uint64_t size) |
| { |
| int ret; |
| HANDLE hDeviceVM; |
| DWORD dSize = 0; |
| |
| if (!hax_global.vm || !hax_global.vm->fd) { |
| fprintf(stderr, "Allocate memory before vm create?\n"); |
| return -EINVAL; |
| } |
| |
| hDeviceVM = hax_global.vm->fd; |
| if (hax_global.supports_64bit_ramblock) { |
| struct hax_ramblock_info ramblock = { |
| .start_va = va, |
| .size = size, |
| .reserved = 0 |
| }; |
| |
| ret = DeviceIoControl(hDeviceVM, |
| HAX_VM_IOCTL_ADD_RAMBLOCK, |
| &ramblock, sizeof(ramblock), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| } else { |
| struct hax_alloc_ram_info info = { |
| .size = (uint32_t) size, |
| .pad = 0, |
| .va = va |
| }; |
| |
| ret = DeviceIoControl(hDeviceVM, |
| HAX_VM_IOCTL_ALLOC_RAM, |
| &info, sizeof(info), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| } |
| |
| if (!ret) { |
| fprintf(stderr, "Failed to register RAM block: va=0x%" PRIx64 |
| ", size=0x%" PRIx64 ", method=%s\n", va, size, |
| hax_global.supports_64bit_ramblock ? "new" : "legacy"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags) |
| { |
| struct hax_set_ram_info info; |
| HANDLE hDeviceVM = hax_global.vm->fd; |
| DWORD dSize = 0; |
| int ret; |
| |
| info.pa_start = start_pa; |
| info.size = size; |
| info.va = host_va; |
| info.flags = (uint8_t) flags; |
| |
| ret = DeviceIoControl(hDeviceVM, HAX_VM_IOCTL_SET_RAM, |
| &info, sizeof(info), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap) |
| { |
| int ret; |
| HANDLE hDevice = hax->fd; /* handle to hax module */ |
| DWORD dSize = 0; |
| DWORD err = 0; |
| |
| if (hax_invalid_fd(hDevice)) { |
| fprintf(stderr, "Invalid fd for hax device!\n"); |
| return -ENODEV; |
| } |
| |
| ret = DeviceIoControl(hDevice, HAX_IOCTL_CAPABILITY, NULL, 0, cap, |
| sizeof(*cap), &dSize, (LPOVERLAPPED) NULL); |
| |
| if (!ret) { |
| err = GetLastError(); |
| if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) { |
| fprintf(stderr, "hax capability is too long to hold.\n"); |
| } |
| fprintf(stderr, "Failed to get Hax capability:%luu\n", err); |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_mod_version(struct hax_state *hax, struct hax_module_version *version) |
| { |
| int ret; |
| HANDLE hDevice = hax->fd; /* handle to hax module */ |
| DWORD dSize = 0; |
| DWORD err = 0; |
| |
| if (hax_invalid_fd(hDevice)) { |
| fprintf(stderr, "Invalid fd for hax device!\n"); |
| return -ENODEV; |
| } |
| |
| ret = DeviceIoControl(hDevice, |
| HAX_IOCTL_VERSION, |
| NULL, 0, |
| version, sizeof(*version), &dSize, |
| (LPOVERLAPPED) NULL); |
| |
| if (!ret) { |
| err = GetLastError(); |
| if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) { |
| fprintf(stderr, "hax module verion is too long to hold.\n"); |
| } |
| fprintf(stderr, "Failed to get Hax module version:%lu\n", err); |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| static char *hax_vm_devfs_string(int vm_id) |
| { |
| return g_strdup_printf("\\\\.\\hax_vm%02d", vm_id); |
| } |
| |
| static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id) |
| { |
| return g_strdup_printf("\\\\.\\hax_vm%02d_vcpu%02d", vm_id, vcpu_id); |
| } |
| |
| int hax_host_create_vm(struct hax_state *hax, int *vmid) |
| { |
| int ret; |
| int vm_id = 0; |
| DWORD dSize = 0; |
| |
| if (hax_invalid_fd(hax->fd)) { |
| return -EINVAL; |
| } |
| |
| if (hax->vm) { |
| return 0; |
| } |
| |
| ret = DeviceIoControl(hax->fd, |
| HAX_IOCTL_CREATE_VM, |
| NULL, 0, &vm_id, sizeof(vm_id), &dSize, |
| (LPOVERLAPPED) NULL); |
| if (!ret) { |
| fprintf(stderr, "Failed to create VM. Error code: %lu\n", |
| GetLastError()); |
| return -1; |
| } |
| *vmid = vm_id; |
| return 0; |
| } |
| |
| hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id) |
| { |
| char *vm_name = NULL; |
| hax_fd hDeviceVM; |
| |
| vm_name = hax_vm_devfs_string(vm_id); |
| if (!vm_name) { |
| fprintf(stderr, "Failed to open VM. VM name is null\n"); |
| return INVALID_HANDLE_VALUE; |
| } |
| |
| hDeviceVM = CreateFile(vm_name, |
| GENERIC_READ | GENERIC_WRITE, |
| 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| if (hDeviceVM == INVALID_HANDLE_VALUE) { |
| fprintf(stderr, "Open the vm device error:%s, ec:%lu\n", |
| vm_name, GetLastError()); |
| } |
| |
| g_free(vm_name); |
| return hDeviceVM; |
| } |
| |
| int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion) |
| { |
| int ret; |
| DWORD dSize = 0; |
| if (hax_invalid_fd(vm_fd)) { |
| return -EINVAL; |
| } |
| ret = DeviceIoControl(vm_fd, |
| HAX_VM_IOCTL_NOTIFY_QEMU_VERSION, |
| qversion, sizeof(struct hax_qemu_version), |
| NULL, 0, &dSize, (LPOVERLAPPED) NULL); |
| if (!ret) { |
| fprintf(stderr, "Failed to notify qemu API version\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid) |
| { |
| int ret; |
| DWORD dSize = 0; |
| |
| ret = DeviceIoControl(vm_fd, |
| HAX_VM_IOCTL_VCPU_CREATE, |
| &vcpuid, sizeof(vcpuid), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| if (!ret) { |
| fprintf(stderr, "Failed to create vcpu %x\n", vcpuid); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| hax_fd hax_host_open_vcpu(int vmid, int vcpuid) |
| { |
| char *devfs_path = NULL; |
| hax_fd hDeviceVCPU; |
| |
| devfs_path = hax_vcpu_devfs_string(vmid, vcpuid); |
| if (!devfs_path) { |
| fprintf(stderr, "Failed to get the devfs\n"); |
| return INVALID_HANDLE_VALUE; |
| } |
| |
| hDeviceVCPU = CreateFile(devfs_path, |
| GENERIC_READ | GENERIC_WRITE, |
| 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, |
| NULL); |
| |
| if (hDeviceVCPU == INVALID_HANDLE_VALUE) { |
| fprintf(stderr, "Failed to open the vcpu devfs\n"); |
| } |
| g_free(devfs_path); |
| return hDeviceVCPU; |
| } |
| |
| int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu) |
| { |
| hax_fd hDeviceVCPU = vcpu->fd; |
| int ret; |
| struct hax_tunnel_info info; |
| DWORD dSize = 0; |
| |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_SETUP_TUNNEL, |
| NULL, 0, &info, sizeof(info), &dSize, |
| (LPOVERLAPPED) NULL); |
| if (!ret) { |
| fprintf(stderr, "Failed to setup the hax tunnel\n"); |
| return -1; |
| } |
| |
| if (!valid_hax_tunnel_size(info.size)) { |
| fprintf(stderr, "Invalid hax tunnel size %x\n", info.size); |
| ret = -EINVAL; |
| return ret; |
| } |
| vcpu->tunnel = (struct hax_tunnel *) (intptr_t) (info.va); |
| vcpu->iobuf = (unsigned char *) (intptr_t) (info.io_va); |
| return 0; |
| } |
| |
| int hax_vcpu_run(struct hax_vcpu_state *vcpu) |
| { |
| int ret; |
| HANDLE hDeviceVCPU = vcpu->fd; |
| DWORD dSize = 0; |
| |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_RUN, |
| NULL, 0, NULL, 0, &dSize, (LPOVERLAPPED) NULL); |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set) |
| { |
| int ret; |
| hax_fd fd; |
| HANDLE hDeviceVCPU; |
| DWORD dSize = 0; |
| |
| fd = hax_vcpu_get_fd(env); |
| if (hax_invalid_fd(fd)) { |
| return -1; |
| } |
| |
| hDeviceVCPU = fd; |
| |
| if (set) { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_SET_FPU, |
| fl, sizeof(*fl), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| } else { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_GET_FPU, |
| NULL, 0, fl, sizeof(*fl), &dSize, |
| (LPOVERLAPPED) NULL); |
| } |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set) |
| { |
| int ret; |
| hax_fd fd; |
| HANDLE hDeviceVCPU; |
| DWORD dSize = 0; |
| |
| fd = hax_vcpu_get_fd(env); |
| if (hax_invalid_fd(fd)) { |
| return -1; |
| } |
| hDeviceVCPU = fd; |
| |
| if (set) { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_SET_MSRS, |
| msrs, sizeof(*msrs), |
| msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL); |
| } else { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_GET_MSRS, |
| msrs, sizeof(*msrs), |
| msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL); |
| } |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set) |
| { |
| int ret; |
| hax_fd fd; |
| HANDLE hDeviceVCPU; |
| DWORD dSize; |
| |
| fd = hax_vcpu_get_fd(env); |
| if (hax_invalid_fd(fd)) { |
| return -1; |
| } |
| |
| hDeviceVCPU = fd; |
| |
| if (set) { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_SET_REGS, |
| state, sizeof(*state), |
| NULL, 0, &dSize, (LPOVERLAPPED) NULL); |
| } else { |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_GET_REGS, |
| NULL, 0, |
| state, sizeof(*state), &dSize, |
| (LPOVERLAPPED) NULL); |
| } |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| int hax_inject_interrupt(CPUArchState *env, int vector) |
| { |
| int ret; |
| hax_fd fd; |
| HANDLE hDeviceVCPU; |
| DWORD dSize; |
| |
| fd = hax_vcpu_get_fd(env); |
| if (hax_invalid_fd(fd)) { |
| return -1; |
| } |
| |
| hDeviceVCPU = fd; |
| |
| ret = DeviceIoControl(hDeviceVCPU, |
| HAX_VCPU_IOCTL_INTERRUPT, |
| &vector, sizeof(vector), NULL, 0, &dSize, |
| (LPOVERLAPPED) NULL); |
| if (!ret) { |
| return -EFAULT; |
| } else { |
| return 0; |
| } |
| } |
| |
| static void CALLBACK dummy_apc_func(ULONG_PTR unused) |
| { |
| } |
| |
| void hax_kick_vcpu_thread(CPUState *cpu) |
| { |
| /* |
| * FIXME: race condition with the exit_request check in |
| * hax_vcpu_hax_exec |
| */ |
| cpu->exit_request = 1; |
| if (!qemu_cpu_is_self(cpu)) { |
| if (!QueueUserAPC(dummy_apc_func, cpu->hThread, 0)) { |
| fprintf(stderr, "%s: QueueUserAPC failed with error %lu\n", |
| __func__, GetLastError()); |
| exit(1); |
| } |
| } |
| } |
