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virtio-gpu.c
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virtio-gpu.c
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/*
* Virtio GPU Device
*
* Copyright Red Hat, Inc. 2013-2014
*
* Authors:
* Dave Airlie <airlied@redhat.com>
* Gerd Hoffmann <kraxel@redhat.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 "qemu-common.h"
#include "qemu/iov.h"
#include "ui/console.h"
#include "trace.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-bus.h"
#include "qemu/log.h"
#include "qapi/error.h"
#define VIRTIO_GPU_VM_VERSION 1
static struct virtio_gpu_simple_resource*
virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
#ifdef CONFIG_VIRGL
#include <virglrenderer.h>
#define VIRGL(_g, _virgl, _simple, ...) \
do { \
if (_g->use_virgl_renderer) { \
_virgl(__VA_ARGS__); \
} else { \
_simple(__VA_ARGS__); \
} \
} while (0)
#else
#define VIRGL(_g, _virgl, _simple, ...) \
do { \
_simple(__VA_ARGS__); \
} while (0)
#endif
static void update_cursor_data_simple(VirtIOGPU *g,
struct virtio_gpu_scanout *s,
uint32_t resource_id)
{
struct virtio_gpu_simple_resource *res;
uint32_t pixels;
res = virtio_gpu_find_resource(g, resource_id);
if (!res) {
return;
}
if (pixman_image_get_width(res->image) != s->current_cursor->width ||
pixman_image_get_height(res->image) != s->current_cursor->height) {
return;
}
pixels = s->current_cursor->width * s->current_cursor->height;
memcpy(s->current_cursor->data,
pixman_image_get_data(res->image),
pixels * sizeof(uint32_t));
}
#ifdef CONFIG_VIRGL
static void update_cursor_data_virgl(VirtIOGPU *g,
struct virtio_gpu_scanout *s,
uint32_t resource_id)
{
uint32_t width, height;
uint32_t pixels, *data;
data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
if (!data) {
return;
}
if (width != s->current_cursor->width ||
height != s->current_cursor->height) {
return;
}
pixels = s->current_cursor->width * s->current_cursor->height;
memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
free(data);
}
#endif
static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
{
struct virtio_gpu_scanout *s;
bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR;
if (cursor->pos.scanout_id >= g->conf.max_outputs) {
return;
}
s = &g->scanout[cursor->pos.scanout_id];
trace_virtio_gpu_update_cursor(cursor->pos.scanout_id,
cursor->pos.x,
cursor->pos.y,
move ? "move" : "update",
cursor->resource_id);
if (!move) {
if (!s->current_cursor) {
s->current_cursor = cursor_alloc(64, 64);
}
s->current_cursor->hot_x = cursor->hot_x;
s->current_cursor->hot_y = cursor->hot_y;
if (cursor->resource_id > 0) {
VIRGL(g, update_cursor_data_virgl, update_cursor_data_simple,
g, s, cursor->resource_id);
}
dpy_cursor_define(s->con, s->current_cursor);
s->cursor = *cursor;
} else {
s->cursor.pos.x = cursor->pos.x;
s->cursor.pos.y = cursor->pos.y;
}
dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y,
cursor->resource_id ? 1 : 0);
}
static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
memcpy(config, &g->virtio_config, sizeof(g->virtio_config));
}
static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
struct virtio_gpu_config vgconfig;
memcpy(&vgconfig, config, sizeof(g->virtio_config));
if (vgconfig.events_clear) {
g->virtio_config.events_read &= ~vgconfig.events_clear;
}
}
static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features,
Error **errp)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
if (virtio_gpu_virgl_enabled(g->conf)) {
features |= (1 << VIRTIO_GPU_F_VIRGL);
}
return features;
}
static void virtio_gpu_set_features(VirtIODevice *vdev, uint64_t features)
{
static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL);
VirtIOGPU *g = VIRTIO_GPU(vdev);
g->use_virgl_renderer = ((features & virgl) == virgl);
trace_virtio_gpu_features(g->use_virgl_renderer);
}
static void virtio_gpu_notify_event(VirtIOGPU *g, uint32_t event_type)
{
g->virtio_config.events_read |= event_type;
virtio_notify_config(&g->parent_obj);
}
static struct virtio_gpu_simple_resource *
virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id)
{
struct virtio_gpu_simple_resource *res;
QTAILQ_FOREACH(res, &g->reslist, next) {
if (res->resource_id == resource_id) {
return res;
}
}
return NULL;
}
void virtio_gpu_ctrl_response(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd,
struct virtio_gpu_ctrl_hdr *resp,
size_t resp_len)
{
size_t s;
if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) {
resp->flags |= VIRTIO_GPU_FLAG_FENCE;
resp->fence_id = cmd->cmd_hdr.fence_id;
resp->ctx_id = cmd->cmd_hdr.ctx_id;
}
s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len);
if (s != resp_len) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: response size incorrect %zu vs %zu\n",
__func__, s, resp_len);
}
virtqueue_push(cmd->vq, &cmd->elem, s);
virtio_notify(VIRTIO_DEVICE(g), cmd->vq);
cmd->finished = true;
}
void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd,
enum virtio_gpu_ctrl_type type)
{
struct virtio_gpu_ctrl_hdr resp;
memset(&resp, 0, sizeof(resp));
resp.type = type;
virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp));
}
static void
virtio_gpu_fill_display_info(VirtIOGPU *g,
struct virtio_gpu_resp_display_info *dpy_info)
{
int i;
for (i = 0; i < g->conf.max_outputs; i++) {
if (g->enabled_output_bitmask & (1 << i)) {
dpy_info->pmodes[i].enabled = 1;
dpy_info->pmodes[i].r.width = g->req_state[i].width;
dpy_info->pmodes[i].r.height = g->req_state[i].height;
}
}
}
void virtio_gpu_get_display_info(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resp_display_info display_info;
trace_virtio_gpu_cmd_get_display_info();
memset(&display_info, 0, sizeof(display_info));
display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO;
virtio_gpu_fill_display_info(g, &display_info);
virtio_gpu_ctrl_response(g, cmd, &display_info.hdr,
sizeof(display_info));
}
static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format)
{
switch (virtio_gpu_format) {
#ifdef HOST_WORDS_BIGENDIAN
case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
return PIXMAN_b8g8r8x8;
case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
return PIXMAN_b8g8r8a8;
case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
return PIXMAN_x8r8g8b8;
case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
return PIXMAN_a8r8g8b8;
case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
return PIXMAN_r8g8b8x8;
case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
return PIXMAN_r8g8b8a8;
case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
return PIXMAN_x8b8g8r8;
case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
return PIXMAN_a8b8g8r8;
#else
case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
return PIXMAN_x8r8g8b8;
case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
return PIXMAN_a8r8g8b8;
case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
return PIXMAN_b8g8r8x8;
case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
return PIXMAN_b8g8r8a8;
case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
return PIXMAN_x8b8g8r8;
case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
return PIXMAN_a8b8g8r8;
case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
return PIXMAN_r8g8b8x8;
case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
return PIXMAN_r8g8b8a8;
#endif
default:
return 0;
}
}
static void virtio_gpu_resource_create_2d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
pixman_format_code_t pformat;
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_create_2d c2d;
VIRTIO_GPU_FILL_CMD(c2d);
trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
c2d.width, c2d.height);
if (c2d.resource_id == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = virtio_gpu_find_resource(g, c2d.resource_id);
if (res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
__func__, c2d.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = g_new0(struct virtio_gpu_simple_resource, 1);
res->width = c2d.width;
res->height = c2d.height;
res->format = c2d.format;
res->resource_id = c2d.resource_id;
pformat = get_pixman_format(c2d.format);
if (!pformat) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: host couldn't handle guest format %d\n",
__func__, c2d.format);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
res->image = pixman_image_create_bits(pformat,
c2d.width,
c2d.height,
NULL, 0);
if (!res->image) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: resource creation failed %d %d %d\n",
__func__, c2d.resource_id, c2d.width, c2d.height);
g_free(res);
cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY;
return;
}
QTAILQ_INSERT_HEAD(&g->reslist, res, next);
}
static void virtio_gpu_resource_destroy(VirtIOGPU *g,
struct virtio_gpu_simple_resource *res)
{
pixman_image_unref(res->image);
QTAILQ_REMOVE(&g->reslist, res, next);
g_free(res);
}
static void virtio_gpu_resource_unref(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_unref unref;
VIRTIO_GPU_FILL_CMD(unref);
trace_virtio_gpu_cmd_res_unref(unref.resource_id);
res = virtio_gpu_find_resource(g, unref.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, unref.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
virtio_gpu_resource_destroy(g, res);
}
static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
int h;
uint32_t src_offset, dst_offset, stride;
int bpp;
pixman_format_code_t format;
struct virtio_gpu_transfer_to_host_2d t2d;
VIRTIO_GPU_FILL_CMD(t2d);
trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
res = virtio_gpu_find_resource(g, t2d.resource_id);
if (!res || !res->iov) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, t2d.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
if (t2d.r.x > res->width ||
t2d.r.y > res->height ||
t2d.r.width > res->width ||
t2d.r.height > res->height ||
t2d.r.x + t2d.r.width > res->width ||
t2d.r.y + t2d.r.height > res->height) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource"
" bounds for resource %d: %d %d %d %d vs %d %d\n",
__func__, t2d.resource_id, t2d.r.x, t2d.r.y,
t2d.r.width, t2d.r.height, res->width, res->height);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
format = pixman_image_get_format(res->image);
bpp = (PIXMAN_FORMAT_BPP(format) + 7) / 8;
stride = pixman_image_get_stride(res->image);
if (t2d.offset || t2d.r.x || t2d.r.y ||
t2d.r.width != pixman_image_get_width(res->image)) {
void *img_data = pixman_image_get_data(res->image);
for (h = 0; h < t2d.r.height; h++) {
src_offset = t2d.offset + stride * h;
dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp);
iov_to_buf(res->iov, res->iov_cnt, src_offset,
(uint8_t *)img_data
+ dst_offset, t2d.r.width * bpp);
}
} else {
iov_to_buf(res->iov, res->iov_cnt, 0,
pixman_image_get_data(res->image),
pixman_image_get_stride(res->image)
* pixman_image_get_height(res->image));
}
}
static void virtio_gpu_resource_flush(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_flush rf;
pixman_region16_t flush_region;
int i;
VIRTIO_GPU_FILL_CMD(rf);
trace_virtio_gpu_cmd_res_flush(rf.resource_id,
rf.r.width, rf.r.height, rf.r.x, rf.r.y);
res = virtio_gpu_find_resource(g, rf.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, rf.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
if (rf.r.x > res->width ||
rf.r.y > res->height ||
rf.r.width > res->width ||
rf.r.height > res->height ||
rf.r.x + rf.r.width > res->width ||
rf.r.y + rf.r.height > res->height) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource"
" bounds for resource %d: %d %d %d %d vs %d %d\n",
__func__, rf.resource_id, rf.r.x, rf.r.y,
rf.r.width, rf.r.height, res->width, res->height);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
pixman_region_init_rect(&flush_region,
rf.r.x, rf.r.y, rf.r.width, rf.r.height);
for (i = 0; i < g->conf.max_outputs; i++) {
struct virtio_gpu_scanout *scanout;
pixman_region16_t region, finalregion;
pixman_box16_t *extents;
if (!(res->scanout_bitmask & (1 << i))) {
continue;
}
scanout = &g->scanout[i];
pixman_region_init(&finalregion);
pixman_region_init_rect(®ion, scanout->x, scanout->y,
scanout->width, scanout->height);
pixman_region_intersect(&finalregion, &flush_region, ®ion);
pixman_region_translate(&finalregion, -scanout->x, -scanout->y);
extents = pixman_region_extents(&finalregion);
/* work out the area we need to update for each console */
dpy_gfx_update(g->scanout[i].con,
extents->x1, extents->y1,
extents->x2 - extents->x1,
extents->y2 - extents->y1);
pixman_region_fini(®ion);
pixman_region_fini(&finalregion);
}
pixman_region_fini(&flush_region);
}
static void virtio_unref_resource(pixman_image_t *image, void *data)
{
pixman_image_unref(data);
}
static void virtio_gpu_set_scanout(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_scanout *scanout;
pixman_format_code_t format;
uint32_t offset;
int bpp;
struct virtio_gpu_set_scanout ss;
VIRTIO_GPU_FILL_CMD(ss);
trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
ss.r.width, ss.r.height, ss.r.x, ss.r.y);
if (ss.scanout_id >= g->conf.max_outputs) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
__func__, ss.scanout_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
return;
}
g->enable = 1;
if (ss.resource_id == 0) {
scanout = &g->scanout[ss.scanout_id];
if (scanout->resource_id) {
res = virtio_gpu_find_resource(g, scanout->resource_id);
if (res) {
res->scanout_bitmask &= ~(1 << ss.scanout_id);
}
}
if (ss.scanout_id == 0) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: illegal scanout id specified %d",
__func__, ss.scanout_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
return;
}
dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
scanout->ds = NULL;
scanout->width = 0;
scanout->height = 0;
return;
}
/* create a surface for this scanout */
res = virtio_gpu_find_resource(g, ss.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, ss.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
if (ss.r.x > res->width ||
ss.r.y > res->height ||
ss.r.width > res->width ||
ss.r.height > res->height ||
ss.r.x + ss.r.width > res->width ||
ss.r.y + ss.r.height > res->height) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
" resource %d, (%d,%d)+%d,%d vs %d %d\n",
__func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y,
ss.r.width, ss.r.height, res->width, res->height);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
scanout = &g->scanout[ss.scanout_id];
format = pixman_image_get_format(res->image);
bpp = (PIXMAN_FORMAT_BPP(format) + 7) / 8;
offset = (ss.r.x * bpp) + ss.r.y * pixman_image_get_stride(res->image);
if (!scanout->ds || surface_data(scanout->ds)
!= ((uint8_t *)pixman_image_get_data(res->image) + offset) ||
scanout->width != ss.r.width ||
scanout->height != ss.r.height) {
pixman_image_t *rect;
void *ptr = (uint8_t *)pixman_image_get_data(res->image) + offset;
rect = pixman_image_create_bits(format, ss.r.width, ss.r.height, ptr,
pixman_image_get_stride(res->image));
pixman_image_ref(res->image);
pixman_image_set_destroy_function(rect, virtio_unref_resource,
res->image);
/* realloc the surface ptr */
scanout->ds = qemu_create_displaysurface_pixman(rect);
if (!scanout->ds) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
}
res->scanout_bitmask |= (1 << ss.scanout_id);
scanout->resource_id = ss.resource_id;
scanout->x = ss.r.x;
scanout->y = ss.r.y;
scanout->width = ss.r.width;
scanout->height = ss.r.height;
}
int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
struct virtio_gpu_ctrl_command *cmd,
uint64_t **addr, struct iovec **iov)
{
struct virtio_gpu_mem_entry *ents;
size_t esize, s;
int i;
if (ab->nr_entries > 16384) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: nr_entries is too big (%d > 16384)\n",
__func__, ab->nr_entries);
return -1;
}
esize = sizeof(*ents) * ab->nr_entries;
ents = g_malloc(esize);
s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
sizeof(*ab), ents, esize);
if (s != esize) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: command data size incorrect %zu vs %zu\n",
__func__, s, esize);
g_free(ents);
return -1;
}
*iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
if (addr) {
*addr = g_malloc0(sizeof(uint64_t) * ab->nr_entries);
}
for (i = 0; i < ab->nr_entries; i++) {
hwaddr len = ents[i].length;
(*iov)[i].iov_len = ents[i].length;
(*iov)[i].iov_base = cpu_physical_memory_map(ents[i].addr, &len, 1);
if (addr) {
(*addr)[i] = ents[i].addr;
}
if (!(*iov)[i].iov_base || len != ents[i].length) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
" resource %d element %d\n",
__func__, ab->resource_id, i);
virtio_gpu_cleanup_mapping_iov(*iov, i);
g_free(ents);
*iov = NULL;
if (addr) {
g_free(*addr);
*addr = NULL;
}
return -1;
}
}
g_free(ents);
return 0;
}
void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count)
{
int i;
for (i = 0; i < count; i++) {
cpu_physical_memory_unmap(iov[i].iov_base, iov[i].iov_len, 1,
iov[i].iov_len);
}
g_free(iov);
}
static void virtio_gpu_cleanup_mapping(struct virtio_gpu_simple_resource *res)
{
virtio_gpu_cleanup_mapping_iov(res->iov, res->iov_cnt);
res->iov = NULL;
res->iov_cnt = 0;
g_free(res->addrs);
res->addrs = NULL;
}
static void
virtio_gpu_resource_attach_backing(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_attach_backing ab;
int ret;
VIRTIO_GPU_FILL_CMD(ab);
trace_virtio_gpu_cmd_res_back_attach(ab.resource_id);
res = virtio_gpu_find_resource(g, ab.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, ab.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
ret = virtio_gpu_create_mapping_iov(&ab, cmd, &res->addrs, &res->iov);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
res->iov_cnt = ab.nr_entries;
}
static void
virtio_gpu_resource_detach_backing(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_detach_backing detach;
VIRTIO_GPU_FILL_CMD(detach);
trace_virtio_gpu_cmd_res_back_detach(detach.resource_id);
res = virtio_gpu_find_resource(g, detach.resource_id);
if (!res || !res->iov) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
__func__, detach.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
virtio_gpu_cleanup_mapping(res);
}
static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
switch (cmd->cmd_hdr.type) {
case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
virtio_gpu_get_display_info(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
virtio_gpu_resource_create_2d(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_UNREF:
virtio_gpu_resource_unref(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
virtio_gpu_resource_flush(g, cmd);
break;
case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
virtio_gpu_transfer_to_host_2d(g, cmd);
break;
case VIRTIO_GPU_CMD_SET_SCANOUT:
virtio_gpu_set_scanout(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
virtio_gpu_resource_attach_backing(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
virtio_gpu_resource_detach_backing(g, cmd);
break;
default:
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
break;
}
if (!cmd->finished) {
virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error :
VIRTIO_GPU_RESP_OK_NODATA);
}
}
static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
qemu_bh_schedule(g->ctrl_bh);
}
static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
qemu_bh_schedule(g->cursor_bh);
}
void virtio_gpu_process_cmdq(VirtIOGPU *g)
{
struct virtio_gpu_ctrl_command *cmd;
while (!QTAILQ_EMPTY(&g->cmdq)) {
cmd = QTAILQ_FIRST(&g->cmdq);
/* process command */
VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
g, cmd);
if (cmd->waiting) {
break;
}
QTAILQ_REMOVE(&g->cmdq, cmd, next);
if (virtio_gpu_stats_enabled(g->conf)) {
g->stats.requests++;
}
if (!cmd->finished) {
QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next);
g->inflight++;
if (virtio_gpu_stats_enabled(g->conf)) {
if (g->stats.max_inflight < g->inflight) {
g->stats.max_inflight = g->inflight;
}
fprintf(stderr, "inflight: %3d (+)\r", g->inflight);
}
} else {
g_free(cmd);
}
}
}
static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
struct virtio_gpu_ctrl_command *cmd;
if (!virtio_queue_ready(vq)) {
return;
}
#ifdef CONFIG_VIRGL
if (!g->renderer_inited && g->use_virgl_renderer) {
virtio_gpu_virgl_init(g);
g->renderer_inited = true;
}
#endif
cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
while (cmd) {
cmd->vq = vq;
cmd->error = 0;
cmd->finished = false;
cmd->waiting = false;
QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
}
virtio_gpu_process_cmdq(g);
#ifdef CONFIG_VIRGL
if (g->use_virgl_renderer) {
virtio_gpu_virgl_fence_poll(g);
}
#endif
}
static void virtio_gpu_ctrl_bh(void *opaque)
{
VirtIOGPU *g = opaque;
virtio_gpu_handle_ctrl(&g->parent_obj, g->ctrl_vq);
}
static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
VirtQueueElement *elem;
size_t s;
struct virtio_gpu_update_cursor cursor_info;
if (!virtio_queue_ready(vq)) {
return;
}
for (;;) {
elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
if (!elem) {
break;
}
s = iov_to_buf(elem->out_sg, elem->out_num, 0,
&cursor_info, sizeof(cursor_info));
if (s != sizeof(cursor_info)) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: cursor size incorrect %zu vs %zu\n",
__func__, s, sizeof(cursor_info));
} else {
update_cursor(g, &cursor_info);
}
virtqueue_push(vq, elem, 0);
virtio_notify(vdev, vq);
g_free(elem);
}
}
static void virtio_gpu_cursor_bh(void *opaque)
{
VirtIOGPU *g = opaque;
virtio_gpu_handle_cursor(&g->parent_obj, g->cursor_vq);
}
static void virtio_gpu_invalidate_display(void *opaque)
{
}
static void virtio_gpu_update_display(void *opaque)
{
}
static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
{
}
static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
{
VirtIOGPU *g = opaque;
if (idx >= g->conf.max_outputs) {
return -1;
}
g->req_state[idx].x = info->xoff;
g->req_state[idx].y = info->yoff;
g->req_state[idx].width = info->width;
g->req_state[idx].height = info->height;
if (info->width && info->height) {
g->enabled_output_bitmask |= (1 << idx);
} else {
g->enabled_output_bitmask &= ~(1 << idx);
}
/* send event to guest */
virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
return 0;
}
static void virtio_gpu_gl_block(void *opaque, bool block)
{
VirtIOGPU *g = opaque;
if (block) {
g->renderer_blocked++;
} else {
g->renderer_blocked--;
}
assert(g->renderer_blocked >= 0);
if (g->renderer_blocked == 0) {
virtio_gpu_process_cmdq(g);
}
}
const GraphicHwOps virtio_gpu_ops = {
.invalidate = virtio_gpu_invalidate_display,
.gfx_update = virtio_gpu_update_display,
.text_update = virtio_gpu_text_update,
.ui_info = virtio_gpu_ui_info,
.gl_block = virtio_gpu_gl_block,
};
static const VMStateDescription vmstate_virtio_gpu_scanout = {
.name = "virtio-gpu-one-scanout",
.version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout),
VMSTATE_UINT32(width, struct virtio_gpu_scanout),
VMSTATE_UINT32(height, struct virtio_gpu_scanout),
VMSTATE_INT32(x, struct virtio_gpu_scanout),
VMSTATE_INT32(y, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout),
VMSTATE_END_OF_LIST()
},
};
static const VMStateDescription vmstate_virtio_gpu_scanouts = {
.name = "virtio-gpu-scanouts",
.version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_INT32(enable, struct VirtIOGPU),
VMSTATE_UINT32_EQUAL(conf.max_outputs, struct VirtIOGPU),
VMSTATE_STRUCT_VARRAY_UINT32(scanout, struct VirtIOGPU,
conf.max_outputs, 1,
vmstate_virtio_gpu_scanout,
struct virtio_gpu_scanout),
VMSTATE_END_OF_LIST()
},
};
static const VMStateDescription vmstate_virtio_gpu_unmigratable = {
.name = "virtio-gpu-with-virgl",
.unmigratable = 1,
};
static void virtio_gpu_save(QEMUFile *f, void *opaque)
{
VirtIOGPU *g = opaque;
VirtIODevice *vdev = VIRTIO_DEVICE(g);
struct virtio_gpu_simple_resource *res;
int i;