47c1c8c12f
That's a forward port of the core HAX interface code from the
emu-2.2-release branch in the external/qemu-android repository as used by
the Android emulator.
The original commit was "target/i386: Add Intel HAX to android emulator"
saying:
"""
Backport of 2b3098ff27bab079caab9b46b58546b5036f5c0c
from studio-1.4-dev into emu-master-dev
Intel HAX (harware acceleration) will enhance android emulator performance
in Windows and Mac OS X in the systems powered by Intel processors with
"Intel Hardware Accelerated Execution Manager" package installed when
user runs android emulator with Intel target.
Signed-off-by: David Chou <david.j.chou@intel.com>
"""
It has been modified to build and run along with the current code base.
The formatting has been fixed to go through scripts/checkpatch.pl,
and the DPRINTF macros have been updated to get the instanciations checked by
the compiler.
The FPU registers saving/restoring has been updated to match the current
QEMU registers layout.
The implementation has been simplified by doing the following modifications:
- removing the code for supporting the hardware without Unrestricted Guest (UG)
mode (including all the code to fallback on TCG emulation).
- not including the Darwin support (which is not yet debugged/tested).
- simplifying the initialization by removing the leftovers from the Android
specific code, then trimming down the remaining logic.
- removing the unused MemoryListener callbacks.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Message-Id: <e1023837f8d0e4c470f6c4a3bf643971b2bca5be.1484045952.git.vpalatin@chromium.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
480 lines
12 KiB
C
480 lines
12 KiB
C
/*
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* QEMU HAXM support
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*
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* Copyright (c) 2011 Intel Corporation
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* Written by:
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* Jiang Yunhong<yunhong.jiang@intel.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "exec/exec-all.h"
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#include "hax-i386.h"
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/*
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* return 0 when success, -1 when driver not loaded,
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* other negative value for other failure
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*/
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static int hax_open_device(hax_fd *fd)
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{
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uint32_t errNum = 0;
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HANDLE hDevice;
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if (!fd) {
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return -2;
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}
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hDevice = CreateFile("\\\\.\\HAX",
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hDevice == INVALID_HANDLE_VALUE) {
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fprintf(stderr, "Failed to open the HAX device!\n");
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errNum = GetLastError();
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if (errNum == ERROR_FILE_NOT_FOUND) {
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return -1;
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}
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return -2;
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}
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*fd = hDevice;
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return 0;
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}
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/* hax_fd hax_mod_open */
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hax_fd hax_mod_open(void)
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{
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int ret;
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hax_fd fd = NULL;
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ret = hax_open_device(&fd);
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if (ret != 0) {
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fprintf(stderr, "Open HAX device failed\n");
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}
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return fd;
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}
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int hax_populate_ram(uint64_t va, uint32_t size)
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{
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int ret;
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struct hax_alloc_ram_info info;
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HANDLE hDeviceVM;
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DWORD dSize = 0;
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if (!hax_global.vm || !hax_global.vm->fd) {
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fprintf(stderr, "Allocate memory before vm create?\n");
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return -EINVAL;
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}
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info.size = size;
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info.va = va;
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hDeviceVM = hax_global.vm->fd;
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ret = DeviceIoControl(hDeviceVM,
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HAX_VM_IOCTL_ALLOC_RAM,
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&info, sizeof(info), NULL, 0, &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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fprintf(stderr, "Failed to allocate %x memory\n", size);
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return ret;
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}
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return 0;
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}
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int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags)
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{
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struct hax_set_ram_info info;
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HANDLE hDeviceVM = hax_global.vm->fd;
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DWORD dSize = 0;
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int ret;
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info.pa_start = start_pa;
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info.size = size;
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info.va = host_va;
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info.flags = (uint8_t) flags;
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ret = DeviceIoControl(hDeviceVM, HAX_VM_IOCTL_SET_RAM,
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&info, sizeof(info), NULL, 0, &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap)
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{
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int ret;
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HANDLE hDevice = hax->fd; /* handle to hax module */
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DWORD dSize = 0;
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DWORD err = 0;
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if (hax_invalid_fd(hDevice)) {
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fprintf(stderr, "Invalid fd for hax device!\n");
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return -ENODEV;
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}
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ret = DeviceIoControl(hDevice, HAX_IOCTL_CAPABILITY, NULL, 0, cap,
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sizeof(*cap), &dSize, (LPOVERLAPPED) NULL);
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if (!ret) {
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err = GetLastError();
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if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) {
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fprintf(stderr, "hax capability is too long to hold.\n");
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}
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fprintf(stderr, "Failed to get Hax capability:%luu\n", err);
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_mod_version(struct hax_state *hax, struct hax_module_version *version)
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{
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int ret;
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HANDLE hDevice = hax->fd; /* handle to hax module */
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DWORD dSize = 0;
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DWORD err = 0;
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if (hax_invalid_fd(hDevice)) {
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fprintf(stderr, "Invalid fd for hax device!\n");
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return -ENODEV;
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}
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ret = DeviceIoControl(hDevice,
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HAX_IOCTL_VERSION,
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NULL, 0,
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version, sizeof(*version), &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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err = GetLastError();
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if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) {
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fprintf(stderr, "hax module verion is too long to hold.\n");
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}
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fprintf(stderr, "Failed to get Hax module version:%lu\n", err);
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return -EFAULT;
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} else {
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return 0;
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}
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}
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static char *hax_vm_devfs_string(int vm_id)
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{
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char *name;
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if (vm_id > MAX_VM_ID) {
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fprintf(stderr, "Too big VM id\n");
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return NULL;
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}
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#define HAX_VM_DEVFS "\\\\.\\hax_vmxx"
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name = g_strdup(HAX_VM_DEVFS);
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if (!name) {
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return NULL;
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}
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snprintf(name, sizeof HAX_VM_DEVFS, "\\\\.\\hax_vm%02d", vm_id);
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return name;
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}
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static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id)
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{
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char *name;
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if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) {
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fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id);
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return NULL;
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}
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#define HAX_VCPU_DEVFS "\\\\.\\hax_vmxx_vcpuxx"
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name = g_strdup(HAX_VCPU_DEVFS);
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if (!name) {
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return NULL;
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}
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snprintf(name, sizeof HAX_VCPU_DEVFS, "\\\\.\\hax_vm%02d_vcpu%02d",
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vm_id, vcpu_id);
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return name;
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}
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int hax_host_create_vm(struct hax_state *hax, int *vmid)
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{
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int ret;
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int vm_id = 0;
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DWORD dSize = 0;
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if (hax_invalid_fd(hax->fd)) {
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return -EINVAL;
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}
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if (hax->vm) {
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return 0;
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}
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ret = DeviceIoControl(hax->fd,
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HAX_IOCTL_CREATE_VM,
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NULL, 0, &vm_id, sizeof(vm_id), &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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fprintf(stderr, "Failed to create VM. Error code: %lu\n",
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GetLastError());
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return -1;
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}
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*vmid = vm_id;
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return 0;
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}
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hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id)
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{
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char *vm_name = NULL;
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hax_fd hDeviceVM;
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vm_name = hax_vm_devfs_string(vm_id);
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if (!vm_name) {
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fprintf(stderr, "Failed to open VM. VM name is null\n");
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return INVALID_HANDLE_VALUE;
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}
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hDeviceVM = CreateFile(vm_name,
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hDeviceVM == INVALID_HANDLE_VALUE) {
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fprintf(stderr, "Open the vm device error:%s, ec:%lu\n",
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vm_name, GetLastError());
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}
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g_free(vm_name);
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return hDeviceVM;
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}
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int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion)
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{
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int ret;
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DWORD dSize = 0;
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if (hax_invalid_fd(vm_fd)) {
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return -EINVAL;
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}
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ret = DeviceIoControl(vm_fd,
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HAX_VM_IOCTL_NOTIFY_QEMU_VERSION,
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qversion, sizeof(struct hax_qemu_version),
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NULL, 0, &dSize, (LPOVERLAPPED) NULL);
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if (!ret) {
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fprintf(stderr, "Failed to notify qemu API version\n");
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return -1;
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}
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return 0;
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}
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int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid)
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{
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int ret;
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DWORD dSize = 0;
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ret = DeviceIoControl(vm_fd,
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HAX_VM_IOCTL_VCPU_CREATE,
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&vcpuid, sizeof(vcpuid), NULL, 0, &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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fprintf(stderr, "Failed to create vcpu %x\n", vcpuid);
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return -1;
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}
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return 0;
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}
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hax_fd hax_host_open_vcpu(int vmid, int vcpuid)
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{
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char *devfs_path = NULL;
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hax_fd hDeviceVCPU;
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devfs_path = hax_vcpu_devfs_string(vmid, vcpuid);
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if (!devfs_path) {
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fprintf(stderr, "Failed to get the devfs\n");
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return INVALID_HANDLE_VALUE;
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}
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hDeviceVCPU = CreateFile(devfs_path,
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (hDeviceVCPU == INVALID_HANDLE_VALUE) {
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fprintf(stderr, "Failed to open the vcpu devfs\n");
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}
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g_free(devfs_path);
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return hDeviceVCPU;
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}
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int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu)
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{
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hax_fd hDeviceVCPU = vcpu->fd;
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int ret;
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struct hax_tunnel_info info;
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DWORD dSize = 0;
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_SETUP_TUNNEL,
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NULL, 0, &info, sizeof(info), &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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fprintf(stderr, "Failed to setup the hax tunnel\n");
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return -1;
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}
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if (!valid_hax_tunnel_size(info.size)) {
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fprintf(stderr, "Invalid hax tunnel size %x\n", info.size);
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ret = -EINVAL;
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return ret;
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}
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vcpu->tunnel = (struct hax_tunnel *) (intptr_t) (info.va);
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vcpu->iobuf = (unsigned char *) (intptr_t) (info.io_va);
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return 0;
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}
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int hax_vcpu_run(struct hax_vcpu_state *vcpu)
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{
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int ret;
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HANDLE hDeviceVCPU = vcpu->fd;
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DWORD dSize = 0;
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_RUN,
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NULL, 0, NULL, 0, &dSize, (LPOVERLAPPED) NULL);
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set)
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{
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int ret;
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hax_fd fd;
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HANDLE hDeviceVCPU;
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DWORD dSize = 0;
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fd = hax_vcpu_get_fd(env);
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if (hax_invalid_fd(fd)) {
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return -1;
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}
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hDeviceVCPU = fd;
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if (set) {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_SET_FPU,
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fl, sizeof(*fl), NULL, 0, &dSize,
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(LPOVERLAPPED) NULL);
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} else {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_GET_FPU,
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NULL, 0, fl, sizeof(*fl), &dSize,
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(LPOVERLAPPED) NULL);
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}
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set)
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{
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int ret;
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hax_fd fd;
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HANDLE hDeviceVCPU;
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DWORD dSize = 0;
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fd = hax_vcpu_get_fd(env);
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if (hax_invalid_fd(fd)) {
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return -1;
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}
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hDeviceVCPU = fd;
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if (set) {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_SET_MSRS,
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msrs, sizeof(*msrs),
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msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL);
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} else {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_GET_MSRS,
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msrs, sizeof(*msrs),
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msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL);
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}
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set)
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{
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int ret;
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hax_fd fd;
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HANDLE hDeviceVCPU;
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DWORD dSize;
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fd = hax_vcpu_get_fd(env);
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if (hax_invalid_fd(fd)) {
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return -1;
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}
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hDeviceVCPU = fd;
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if (set) {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_SET_REGS,
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state, sizeof(*state),
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NULL, 0, &dSize, (LPOVERLAPPED) NULL);
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} else {
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_GET_REGS,
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NULL, 0,
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state, sizeof(*state), &dSize,
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(LPOVERLAPPED) NULL);
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}
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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int hax_inject_interrupt(CPUArchState *env, int vector)
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{
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int ret;
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hax_fd fd;
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HANDLE hDeviceVCPU;
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DWORD dSize;
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fd = hax_vcpu_get_fd(env);
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if (hax_invalid_fd(fd)) {
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return -1;
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}
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hDeviceVCPU = fd;
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ret = DeviceIoControl(hDeviceVCPU,
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HAX_VCPU_IOCTL_INTERRUPT,
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&vector, sizeof(vector), NULL, 0, &dSize,
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(LPOVERLAPPED) NULL);
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if (!ret) {
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return -EFAULT;
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} else {
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return 0;
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}
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}
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