/*
* 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 "exec/exec-all.h"
#include "hax-i386.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, uint32_t size)
{
int ret;
struct hax_alloc_ram_info info;
HANDLE hDeviceVM;
DWORD dSize = 0;
if (!hax_global.vm || !hax_global.vm->fd) {
fprintf(stderr, "Allocate memory before vm create?\n");
return -EINVAL;
}
info.size = size;
info.va = va;
hDeviceVM = hax_global.vm->fd;
ret = DeviceIoControl(hDeviceVM,
HAX_VM_IOCTL_ALLOC_RAM,
&info, sizeof(info), NULL, 0, &dSize,
(LPOVERLAPPED) NULL);
if (!ret) {
fprintf(stderr, "Failed to allocate %x memory\n", size);
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)
{
char *name;
if (vm_id > MAX_VM_ID) {
fprintf(stderr, "Too big VM id\n");
return NULL;
}
#define HAX_VM_DEVFS "\\\\.\\hax_vmxx"
name = g_strdup(HAX_VM_DEVFS);
if (!name) {
return NULL;
}
snprintf(name, sizeof HAX_VM_DEVFS, "\\\\.\\hax_vm%02d", vm_id);
return name;
}
static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id)
{
char *name;
if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) {
fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id);
return NULL;
}
#define HAX_VCPU_DEVFS "\\\\.\\hax_vmxx_vcpuxx"
name = g_strdup(HAX_VCPU_DEVFS);
if (!name) {
return NULL;
}
snprintf(name, sizeof HAX_VCPU_DEVFS, "\\\\.\\hax_vm%02d_vcpu%02d",
vm_id, vcpu_id);
return name;
}
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;
}
}
