/*
* 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.
*
*/
/* HAX module interface - darwin version */
#include "qemu/osdep.h"
#include <sys/ioctl.h>
#include "target/i386/hax-i386.h"
hax_fd hax_mod_open(void)
{
int fd = open("/dev/HAX", O_RDWR);
if (fd == -1) {
fprintf(stderr, "Failed to open the hax module\n");
}
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
int hax_populate_ram(uint64_t va, uint32_t size)
{
int ret;
struct hax_alloc_ram_info info;
if (!hax_global.vm || !hax_global.vm->fd) {
fprintf(stderr, "Allocate memory before vm create?\n");
return -EINVAL;
}
info.size = size;
info.va = va;
ret = ioctl(hax_global.vm->fd, HAX_VM_IOCTL_ALLOC_RAM, &info);
if (ret < 0) {
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;
int ret;
info.pa_start = start_pa;
info.size = size;
info.va = host_va;
info.flags = (uint8_t) flags;
ret = ioctl(hax_global.vm->fd, HAX_VM_IOCTL_SET_RAM, &info);
if (ret < 0) {
return -errno;
}
return 0;
}
int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap)
{
int ret;
ret = ioctl(hax->fd, HAX_IOCTL_CAPABILITY, cap);
if (ret == -1) {
fprintf(stderr, "Failed to get HAX capability\n");
return -errno;
}
return 0;
}
int hax_mod_version(struct hax_state *hax, struct hax_module_version *version)
{
int ret;
ret = ioctl(hax->fd, HAX_IOCTL_VERSION, version);
if (ret == -1) {
fprintf(stderr, "Failed to get HAX version\n");
return -errno;
}
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 "/dev/hax_vm/vmxx"
name = g_strdup(HAX_VM_DEVFS);
if (!name) {
return NULL;
}
snprintf(name, sizeof HAX_VM_DEVFS, "/dev/hax_vm/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 "/dev/hax_vmxx/vcpuxx"
name = g_strdup(HAX_VCPU_DEVFS);
if (!name) {
return NULL;
}
snprintf(name, sizeof HAX_VCPU_DEVFS, "/dev/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;
if (hax_invalid_fd(hax->fd)) {
return -EINVAL;
}
if (hax->vm) {
return 0;
}
ret = ioctl(hax->fd, HAX_IOCTL_CREATE_VM, &vm_id);
*vmid = vm_id;
return ret;
}
hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id)
{
hax_fd fd;
char *vm_name = NULL;
vm_name = hax_vm_devfs_string(vm_id);
if (!vm_name) {
return -1;
}
fd = open(vm_name, O_RDWR);
g_free(vm_name);
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion)
{
int ret;
if (hax_invalid_fd(vm_fd)) {
return -EINVAL;
}
ret = ioctl(vm_fd, HAX_VM_IOCTL_NOTIFY_QEMU_VERSION, qversion);
if (ret < 0) {
fprintf(stderr, "Failed to notify qemu API version\n");
return ret;
}
return 0;
}
/* Simply assume the size should be bigger than the hax_tunnel,
* since the hax_tunnel can be extended later with compatibility considered
*/
int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid)
{
int ret;
ret = ioctl(vm_fd, HAX_VM_IOCTL_VCPU_CREATE, &vcpuid);
if (ret < 0) {
fprintf(stderr, "Failed to create vcpu %x\n", vcpuid);
}
return ret;
}
hax_fd hax_host_open_vcpu(int vmid, int vcpuid)
{
char *devfs_path = NULL;
hax_fd fd;
devfs_path = hax_vcpu_devfs_string(vmid, vcpuid);
if (!devfs_path) {
fprintf(stderr, "Failed to get the devfs\n");
return -EINVAL;
}
fd = open(devfs_path, O_RDWR);
g_free(devfs_path);
if (fd < 0) {
fprintf(stderr, "Failed to open the vcpu devfs\n");
}
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu)
{
int ret;
struct hax_tunnel_info info;
ret = ioctl(vcpu->fd, HAX_VCPU_IOCTL_SETUP_TUNNEL, &info);
if (ret) {
fprintf(stderr, "Failed to setup the hax tunnel\n");
return ret;
}
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;
ret = ioctl(vcpu->fd, HAX_VCPU_IOCTL_RUN, NULL);
return ret;
}
int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set)
{
int ret, fd;
fd = hax_vcpu_get_fd(env);
if (fd <= 0) {
return -1;
}
if (set) {
ret = ioctl(fd, HAX_VCPU_IOCTL_SET_FPU, fl);
} else {
ret = ioctl(fd, HAX_VCPU_IOCTL_GET_FPU, fl);
}
return ret;
}
int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set)
{
int ret, fd;
fd = hax_vcpu_get_fd(env);
if (fd <= 0) {
return -1;
}
if (set) {
ret = ioctl(fd, HAX_VCPU_IOCTL_SET_MSRS, msrs);
} else {
ret = ioctl(fd, HAX_VCPU_IOCTL_GET_MSRS, msrs);
}
return ret;
}
int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set)
{
int ret, fd;
fd = hax_vcpu_get_fd(env);
if (fd <= 0) {
return -1;
}
if (set) {
ret = ioctl(fd, HAX_VCPU_SET_REGS, state);
} else {
ret = ioctl(fd, HAX_VCPU_GET_REGS, state);
}
return ret;
}
int hax_inject_interrupt(CPUArchState *env, int vector)
{
int ret, fd;
fd = hax_vcpu_get_fd(env);
if (fd <= 0) {
return -1;
}
ret = ioctl(fd, HAX_VCPU_IOCTL_INTERRUPT, &vector);
return ret;
}
