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xemu/hw/display/virtio-gpu.c
Vivek Kasireddy 44acbc7736 virtio-gpu: Make non-gl display updates work again when blob=true 
In the case where the console does not have gl capability, and
if blob is set to true, make sure that the display updates still
work. Commit e86a93f554 accidentally broke this by misplacing
the return statement (in resource_flush) causing the updates to
be silently ignored.

Fixes: e86a93f554 ("virtio-gpu: splitting one extended mode guest fb into n-scanouts")
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230623060454.3749910-1-vivek.kasireddy@intel.com>
(cherry picked from commit 34e29d85a7734802317c4cac9ad52b10d461c1dc)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2023-06-28 18:52:17 +03:00

1485 lines
47 KiB
C
Raw Blame History

/*
* 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/units.h"
#include "qemu/iov.h"
#include "ui/console.h"
#include "trace.h"
#include "sysemu/dma.h"
#include "sysemu/sysemu.h"
#include "hw/virtio/virtio.h"
#include "migration/qemu-file-types.h"
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-gpu-bswap.h"
#include "hw/virtio/virtio-gpu-pixman.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/display/edid.h"
#include "hw/qdev-properties.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#define VIRTIO_GPU_VM_VERSION 1
static struct virtio_gpu_simple_resource*
virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
static struct virtio_gpu_simple_resource *
virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id,
bool require_backing,
const char *caller, uint32_t *error);
static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
struct virtio_gpu_simple_resource *res);
void virtio_gpu_update_cursor_data(VirtIOGPU *g,
struct virtio_gpu_scanout *s,
uint32_t resource_id)
{
struct virtio_gpu_simple_resource *res;
uint32_t pixels;
void *data;
res = virtio_gpu_find_check_resource(g, resource_id, false,
__func__, NULL);
if (!res) {
return;
}
if (res->blob_size) {
if (res->blob_size < (s->current_cursor->width *
s->current_cursor->height * 4)) {
return;
}
data = res->blob;
} else {
if (pixman_image_get_width(res->image) != s->current_cursor->width ||
pixman_image_get_height(res->image) != s->current_cursor->height) {
return;
}
data = pixman_image_get_data(res->image);
}
pixels = s->current_cursor->width * s->current_cursor->height;
memcpy(s->current_cursor->data, data,
pixels * sizeof(uint32_t));
}
static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
{
struct virtio_gpu_scanout *s;
VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR;
if (cursor->pos.scanout_id >= g->parent_obj.conf.max_outputs) {
return;
}
s = &g->parent_obj.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) {
vgc->update_cursor_data(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 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;
}
static struct virtio_gpu_simple_resource *
virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id,
bool require_backing,
const char *caller, uint32_t *error)
{
struct virtio_gpu_simple_resource *res;
res = virtio_gpu_find_resource(g, resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid resource specified %d\n",
caller, resource_id);
if (error) {
*error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
}
return NULL;
}
if (require_backing) {
if (!res->iov || (!res->image && !res->blob)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: no backing storage %d\n",
caller, resource_id);
if (error) {
*error = VIRTIO_GPU_RESP_ERR_UNSPEC;
}
return NULL;
}
}
return res;
}
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;
}
virtio_gpu_ctrl_hdr_bswap(resp);
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));
}
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_base_fill_display_info(VIRTIO_GPU_BASE(g), &display_info);
virtio_gpu_ctrl_response(g, cmd, &display_info.hdr,
sizeof(display_info));
}
static void
virtio_gpu_generate_edid(VirtIOGPU *g, int scanout,
struct virtio_gpu_resp_edid *edid)
{
VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
qemu_edid_info info = {
.width_mm = b->req_state[scanout].width_mm,
.height_mm = b->req_state[scanout].height_mm,
.prefx = b->req_state[scanout].width,
.prefy = b->req_state[scanout].height,
.refresh_rate = b->req_state[scanout].refresh_rate,
};
edid->size = cpu_to_le32(sizeof(edid->edid));
qemu_edid_generate(edid->edid, sizeof(edid->edid), &info);
}
void virtio_gpu_get_edid(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resp_edid edid;
struct virtio_gpu_cmd_get_edid get_edid;
VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
VIRTIO_GPU_FILL_CMD(get_edid);
virtio_gpu_bswap_32(&get_edid, sizeof(get_edid));
if (get_edid.scanout >= b->conf.max_outputs) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
trace_virtio_gpu_cmd_get_edid(get_edid.scanout);
memset(&edid, 0, sizeof(edid));
edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID;
virtio_gpu_generate_edid(g, get_edid.scanout, &edid);
virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid));
}
static uint32_t calc_image_hostmem(pixman_format_code_t pformat,
uint32_t width, uint32_t height)
{
/* Copied from pixman/pixman-bits-image.c, skip integer overflow check.
* pixman_image_create_bits will fail in case it overflow.
*/
int bpp = PIXMAN_FORMAT_BPP(pformat);
int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t);
return height * stride;
}
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);
virtio_gpu_bswap_32(&c2d, sizeof(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 = virtio_gpu_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);
g_free(res);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height);
if (res->hostmem + g->hostmem < g->conf_max_hostmem) {
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);
g->hostmem += res->hostmem;
}
static void virtio_gpu_resource_create_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_create_blob cblob;
int ret;
VIRTIO_GPU_FILL_CMD(cblob);
virtio_gpu_create_blob_bswap(&cblob);
trace_virtio_gpu_cmd_res_create_blob(cblob.resource_id, cblob.size);
if (cblob.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;
}
if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST &&
cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
if (virtio_gpu_find_resource(g, cblob.resource_id)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
__func__, cblob.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = g_new0(struct virtio_gpu_simple_resource, 1);
res->resource_id = cblob.resource_id;
res->blob_size = cblob.size;
ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob),
cmd, &res->addrs, &res->iov,
&res->iov_cnt);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
g_free(res);
return;
}
virtio_gpu_init_udmabuf(res);
QTAILQ_INSERT_HEAD(&g->reslist, res, next);
}
static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id)
{
struct virtio_gpu_scanout *scanout = &g->parent_obj.scanout[scanout_id];
struct virtio_gpu_simple_resource *res;
if (scanout->resource_id == 0) {
return;
}
res = virtio_gpu_find_resource(g, scanout->resource_id);
if (res) {
res->scanout_bitmask &= ~(1 << scanout_id);
}
dpy_gfx_replace_surface(scanout->con, NULL);
scanout->resource_id = 0;
scanout->ds = NULL;
scanout->width = 0;
scanout->height = 0;
}
static void virtio_gpu_resource_destroy(VirtIOGPU *g,
struct virtio_gpu_simple_resource *res)
{
int i;
if (res->scanout_bitmask) {
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
if (res->scanout_bitmask & (1 << i)) {
virtio_gpu_disable_scanout(g, i);
}
}
}
qemu_pixman_image_unref(res->image);
virtio_gpu_cleanup_mapping(g, res);
QTAILQ_REMOVE(&g->reslist, res, next);
g->hostmem -= res->hostmem;
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);
virtio_gpu_bswap_32(&unref, sizeof(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);
virtio_gpu_t2d_bswap(&t2d);
trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
res = virtio_gpu_find_check_resource(g, t2d.resource_id, true,
__func__, &cmd->error);
if (!res || res->blob) {
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 = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 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;
struct virtio_gpu_scanout *scanout;
pixman_region16_t flush_region;
bool within_bounds = false;
bool update_submitted = false;
int i;
VIRTIO_GPU_FILL_CMD(rf);
virtio_gpu_bswap_32(&rf, sizeof(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_check_resource(g, rf.resource_id, false,
__func__, &cmd->error);
if (!res) {
return;
}
if (res->blob) {
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
scanout = &g->parent_obj.scanout[i];
if (scanout->resource_id == res->resource_id &&
rf.r.x < scanout->x + scanout->width &&
rf.r.x + rf.r.width >= scanout->x &&
rf.r.y < scanout->y + scanout->height &&
rf.r.y + rf.r.height >= scanout->y) {
within_bounds = true;
if (console_has_gl(scanout->con)) {
dpy_gl_update(scanout->con, 0, 0, scanout->width,
scanout->height);
update_submitted = true;
}
}
}
if (update_submitted) {
return;
}
if (!within_bounds) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside scanouts"
" bounds for flush %d: %d %d %d %d\n",
__func__, rf.resource_id, rf.r.x, rf.r.y,
rf.r.width, rf.r.height);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
}
if (!res->blob &&
(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->parent_obj.conf.max_outputs; i++) {
pixman_region16_t region, finalregion;
pixman_box16_t *extents;
if (!(res->scanout_bitmask & (1 << i))) {
continue;
}
scanout = &g->parent_obj.scanout[i];
pixman_region_init(&finalregion);
pixman_region_init_rect(&region, scanout->x, scanout->y,
scanout->width, scanout->height);
pixman_region_intersect(&finalregion, &flush_region, &region);
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->parent_obj.scanout[i].con,
extents->x1, extents->y1,
extents->x2 - extents->x1,
extents->y2 - extents->y1);
pixman_region_fini(&region);
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_update_scanout(VirtIOGPU *g,
uint32_t scanout_id,
struct virtio_gpu_simple_resource *res,
struct virtio_gpu_rect *r)
{
struct virtio_gpu_simple_resource *ores;
struct virtio_gpu_scanout *scanout;
scanout = &g->parent_obj.scanout[scanout_id];
ores = virtio_gpu_find_resource(g, scanout->resource_id);
if (ores) {
ores->scanout_bitmask &= ~(1 << scanout_id);
}
res->scanout_bitmask |= (1 << scanout_id);
scanout->resource_id = res->resource_id;
scanout->x = r->x;
scanout->y = r->y;
scanout->width = r->width;
scanout->height = r->height;
}
static void virtio_gpu_do_set_scanout(VirtIOGPU *g,
uint32_t scanout_id,
struct virtio_gpu_framebuffer *fb,
struct virtio_gpu_simple_resource *res,
struct virtio_gpu_rect *r,
uint32_t *error)
{
struct virtio_gpu_scanout *scanout;
uint8_t *data;
scanout = &g->parent_obj.scanout[scanout_id];
if (r->x > fb->width ||
r->y > fb->height ||
r->width < 16 ||
r->height < 16 ||
r->width > fb->width ||
r->height > fb->height ||
r->x + r->width > fb->width ||
r->y + r->height > fb->height) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
" resource %d, rect (%d,%d)+%d,%d, fb %d %d\n",
__func__, scanout_id, res->resource_id,
r->x, r->y, r->width, r->height,
fb->width, fb->height);
*error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
g->parent_obj.enable = 1;
if (res->blob) {
if (console_has_gl(scanout->con)) {
if (!virtio_gpu_update_dmabuf(g, scanout_id, res, fb, r)) {
virtio_gpu_update_scanout(g, scanout_id, res, r);
return;
}
}
data = res->blob;
} else {
data = (uint8_t *)pixman_image_get_data(res->image);
}
/* create a surface for this scanout */
if ((res->blob && !console_has_gl(scanout->con)) ||
!scanout->ds ||
surface_data(scanout->ds) != data + fb->offset ||
scanout->width != r->width ||
scanout->height != r->height) {
pixman_image_t *rect;
void *ptr = data + fb->offset;
rect = pixman_image_create_bits(fb->format, r->width, r->height,
ptr, fb->stride);
if (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) {
*error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
pixman_image_unref(rect);
dpy_gfx_replace_surface(g->parent_obj.scanout[scanout_id].con,
scanout->ds);
}
virtio_gpu_update_scanout(g, scanout_id, res, r);
}
static void virtio_gpu_set_scanout(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_framebuffer fb = { 0 };
struct virtio_gpu_set_scanout ss;
VIRTIO_GPU_FILL_CMD(ss);
virtio_gpu_bswap_32(&ss, sizeof(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->parent_obj.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;
}
if (ss.resource_id == 0) {
virtio_gpu_disable_scanout(g, ss.scanout_id);
return;
}
res = virtio_gpu_find_check_resource(g, ss.resource_id, true,
__func__, &cmd->error);
if (!res) {
return;
}
fb.format = pixman_image_get_format(res->image);
fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8);
fb.width = pixman_image_get_width(res->image);
fb.height = pixman_image_get_height(res->image);
fb.stride = pixman_image_get_stride(res->image);
fb.offset = ss.r.x * fb.bytes_pp + ss.r.y * fb.stride;
virtio_gpu_do_set_scanout(g, ss.scanout_id,
&fb, res, &ss.r, &cmd->error);
}
static void virtio_gpu_set_scanout_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_framebuffer fb = { 0 };
struct virtio_gpu_set_scanout_blob ss;
uint64_t fbend;
VIRTIO_GPU_FILL_CMD(ss);
virtio_gpu_scanout_blob_bswap(&ss);
trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id,
ss.r.width, ss.r.height, ss.r.x,
ss.r.y);
if (ss.scanout_id >= g->parent_obj.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;
}
if (ss.resource_id == 0) {
virtio_gpu_disable_scanout(g, ss.scanout_id);
return;
}
res = virtio_gpu_find_check_resource(g, ss.resource_id, true,
__func__, &cmd->error);
if (!res) {
return;
}
fb.format = virtio_gpu_get_pixman_format(ss.format);
if (!fb.format) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: host couldn't handle guest format %d\n",
__func__, ss.format);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8);
fb.width = ss.width;
fb.height = ss.height;
fb.stride = ss.strides[0];
fb.offset = ss.offsets[0] + ss.r.x * fb.bytes_pp + ss.r.y * fb.stride;
fbend = fb.offset;
fbend += fb.stride * (ss.r.height - 1);
fbend += fb.bytes_pp * ss.r.width;
if (fbend > res->blob_size) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: fb end out of range\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
virtio_gpu_do_set_scanout(g, ss.scanout_id,
&fb, res, &ss.r, &cmd->error);
}
int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
uint32_t nr_entries, uint32_t offset,
struct virtio_gpu_ctrl_command *cmd,
uint64_t **addr, struct iovec **iov,
uint32_t *niov)
{
struct virtio_gpu_mem_entry *ents;
size_t esize, s;
int e, v;
if (nr_entries > 16384) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: nr_entries is too big (%d > 16384)\n",
__func__, nr_entries);
return -1;
}
esize = sizeof(*ents) * nr_entries;
ents = g_malloc(esize);
s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
offset, 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 = NULL;
if (addr) {
*addr = NULL;
}
for (e = 0, v = 0; e < nr_entries; e++) {
uint64_t a = le64_to_cpu(ents[e].addr);
uint32_t l = le32_to_cpu(ents[e].length);
hwaddr len;
void *map;
do {
len = l;
map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, a, &len,
DMA_DIRECTION_TO_DEVICE,
MEMTXATTRS_UNSPECIFIED);
if (!map) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
" element %d\n", __func__, e);
virtio_gpu_cleanup_mapping_iov(g, *iov, v);
g_free(ents);
*iov = NULL;
if (addr) {
g_free(*addr);
*addr = NULL;
}
return -1;
}
if (!(v % 16)) {
*iov = g_renew(struct iovec, *iov, v + 16);
if (addr) {
*addr = g_renew(uint64_t, *addr, v + 16);
}
}
(*iov)[v].iov_base = map;
(*iov)[v].iov_len = len;
if (addr) {
(*addr)[v] = a;
}
a += len;
l -= len;
v += 1;
} while (l > 0);
}
*niov = v;
g_free(ents);
return 0;
}
void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g,
struct iovec *iov, uint32_t count)
{
int i;
for (i = 0; i < count; i++) {
dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
iov[i].iov_base, iov[i].iov_len,
DMA_DIRECTION_TO_DEVICE,
iov[i].iov_len);
}
g_free(iov);
}
static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
struct virtio_gpu_simple_resource *res)
{
virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt);
res->iov = NULL;
res->iov_cnt = 0;
g_free(res->addrs);
res->addrs = NULL;
if (res->blob) {
virtio_gpu_fini_udmabuf(res);
}
}
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);
virtio_gpu_bswap_32(&ab, sizeof(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;
}
if (res->iov) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
ret = virtio_gpu_create_mapping_iov(g, ab.nr_entries, sizeof(ab), cmd,
&res->addrs, &res->iov, &res->iov_cnt);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
}
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);
virtio_gpu_bswap_32(&detach, sizeof(detach));
trace_virtio_gpu_cmd_res_back_detach(detach.resource_id);
res = virtio_gpu_find_check_resource(g, detach.resource_id, true,
__func__, &cmd->error);
if (!res) {
return;
}
virtio_gpu_cleanup_mapping(g, res);
}
void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
virtio_gpu_ctrl_hdr_bswap(&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_GET_EDID:
virtio_gpu_get_edid(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
virtio_gpu_resource_create_2d(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB:
if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
break;
}
virtio_gpu_resource_create_blob(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_SET_SCANOUT_BLOB:
if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
break;
}
virtio_gpu_set_scanout_blob(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) {
if (!g->parent_obj.renderer_blocked) {
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;
VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
if (g->processing_cmdq) {
return;
}
g->processing_cmdq = true;
while (!QTAILQ_EMPTY(&g->cmdq)) {
cmd = QTAILQ_FIRST(&g->cmdq);
if (g->parent_obj.renderer_blocked) {
break;
}
/* process command */
vgc->process_cmd(g, cmd);
QTAILQ_REMOVE(&g->cmdq, cmd, next);
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
g->stats.requests++;
}
if (!cmd->finished) {
QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next);
g->inflight++;
if (virtio_gpu_stats_enabled(g->parent_obj.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);
}
}
g->processing_cmdq = false;
}
static void virtio_gpu_process_fenceq(VirtIOGPU *g)
{
struct virtio_gpu_ctrl_command *cmd, *tmp;
QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
QTAILQ_REMOVE(&g->fenceq, cmd, next);
g_free(cmd);
g->inflight--;
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
}
}
}
static void virtio_gpu_handle_gl_flushed(VirtIOGPUBase *b)
{
VirtIOGPU *g = container_of(b, VirtIOGPU, parent_obj);
virtio_gpu_process_fenceq(g);
virtio_gpu_process_cmdq(g);
}
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;
}
cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
while (cmd) {
cmd->vq = vq;
cmd->error = 0;
cmd->finished = false;
QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
}
virtio_gpu_process_cmdq(g);
}
static void virtio_gpu_ctrl_bh(void *opaque)
{
VirtIOGPU *g = opaque;
VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
vgc->handle_ctrl(&g->parent_obj.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 {
virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info));
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.parent_obj, g->cursor_vq);
}
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(parent_obj.enable, struct VirtIOGPU),
VMSTATE_UINT32_EQUAL(parent_obj.conf.max_outputs,
struct VirtIOGPU, NULL),
VMSTATE_STRUCT_VARRAY_UINT32(parent_obj.scanout, struct VirtIOGPU,
parent_obj.conf.max_outputs, 1,
vmstate_virtio_gpu_scanout,
struct virtio_gpu_scanout),
VMSTATE_END_OF_LIST()
},
};
static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
VirtIOGPU *g = opaque;
struct virtio_gpu_simple_resource *res;
int i;
/* in 2d mode we should never find unprocessed commands here */
assert(QTAILQ_EMPTY(&g->cmdq));
QTAILQ_FOREACH(res, &g->reslist, next) {
qemu_put_be32(f, res->resource_id);
qemu_put_be32(f, res->width);
qemu_put_be32(f, res->height);
qemu_put_be32(f, res->format);
qemu_put_be32(f, res->iov_cnt);
for (i = 0; i < res->iov_cnt; i++) {
qemu_put_be64(f, res->addrs[i]);
qemu_put_be32(f, res->iov[i].iov_len);
}
qemu_put_buffer(f, (void *)pixman_image_get_data(res->image),
pixman_image_get_stride(res->image) * res->height);
}
qemu_put_be32(f, 0); /* end of list */
return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL);
}
static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
const VMStateField *field)
{
VirtIOGPU *g = opaque;
struct virtio_gpu_simple_resource *res;
struct virtio_gpu_scanout *scanout;
uint32_t resource_id, pformat;
int i;
g->hostmem = 0;
resource_id = qemu_get_be32(f);
while (resource_id != 0) {
res = virtio_gpu_find_resource(g, resource_id);
if (res) {
return -EINVAL;
}
res = g_new0(struct virtio_gpu_simple_resource, 1);
res->resource_id = resource_id;
res->width = qemu_get_be32(f);
res->height = qemu_get_be32(f);
res->format = qemu_get_be32(f);
res->iov_cnt = qemu_get_be32(f);
/* allocate */
pformat = virtio_gpu_get_pixman_format(res->format);
if (!pformat) {
g_free(res);
return -EINVAL;
}
res->image = pixman_image_create_bits(pformat,
res->width, res->height,
NULL, 0);
if (!res->image) {
g_free(res);
return -EINVAL;
}
res->hostmem = calc_image_hostmem(pformat, res->width, res->height);
res->addrs = g_new(uint64_t, res->iov_cnt);
res->iov = g_new(struct iovec, res->iov_cnt);
/* read data */
for (i = 0; i < res->iov_cnt; i++) {
res->addrs[i] = qemu_get_be64(f);
res->iov[i].iov_len = qemu_get_be32(f);
}
qemu_get_buffer(f, (void *)pixman_image_get_data(res->image),
pixman_image_get_stride(res->image) * res->height);
/* restore mapping */
for (i = 0; i < res->iov_cnt; i++) {
hwaddr len = res->iov[i].iov_len;
res->iov[i].iov_base =
dma_memory_map(VIRTIO_DEVICE(g)->dma_as, res->addrs[i], &len,
DMA_DIRECTION_TO_DEVICE,
MEMTXATTRS_UNSPECIFIED);
if (!res->iov[i].iov_base || len != res->iov[i].iov_len) {
/* Clean up the half-a-mapping we just created... */
if (res->iov[i].iov_base) {
dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
res->iov[i].iov_base,
len,
DMA_DIRECTION_TO_DEVICE,
0);
}
/* ...and the mappings for previous loop iterations */
res->iov_cnt = i;
virtio_gpu_cleanup_mapping(g, res);
pixman_image_unref(res->image);
g_free(res);
return -EINVAL;
}
}
QTAILQ_INSERT_HEAD(&g->reslist, res, next);
g->hostmem += res->hostmem;
resource_id = qemu_get_be32(f);
}
/* load & apply scanout state */
vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1);
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
scanout = &g->parent_obj.scanout[i];
if (!scanout->resource_id) {
continue;
}
res = virtio_gpu_find_resource(g, scanout->resource_id);
if (!res) {
return -EINVAL;
}
scanout->ds = qemu_create_displaysurface_pixman(res->image);
if (!scanout->ds) {
return -EINVAL;
}
dpy_gfx_replace_surface(scanout->con, scanout->ds);
dpy_gfx_update_full(scanout->con);
if (scanout->cursor.resource_id) {
update_cursor(g, &scanout->cursor);
}
res->scanout_bitmask |= (1 << i);
}
return 0;
}
void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
VirtIOGPU *g = VIRTIO_GPU(qdev);
if (virtio_gpu_blob_enabled(g->parent_obj.conf)) {
if (!virtio_gpu_have_udmabuf()) {
error_setg(errp, "cannot enable blob resources without udmabuf");
return;
}
if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) {
error_setg(errp, "blobs and virgl are not compatible (yet)");
return;
}
}
if (!virtio_gpu_base_device_realize(qdev,
virtio_gpu_handle_ctrl_cb,
virtio_gpu_handle_cursor_cb,
errp)) {
return;
}
g->ctrl_vq = virtio_get_queue(vdev, 0);
g->cursor_vq = virtio_get_queue(vdev, 1);
g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g);
g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g);
QTAILQ_INIT(&g->reslist);
QTAILQ_INIT(&g->cmdq);
QTAILQ_INIT(&g->fenceq);
}
void virtio_gpu_reset(VirtIODevice *vdev)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
struct virtio_gpu_simple_resource *res, *tmp;
struct virtio_gpu_ctrl_command *cmd;
QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
virtio_gpu_resource_destroy(g, res);
}
while (!QTAILQ_EMPTY(&g->cmdq)) {
cmd = QTAILQ_FIRST(&g->cmdq);
QTAILQ_REMOVE(&g->cmdq, cmd, next);
g_free(cmd);
}
while (!QTAILQ_EMPTY(&g->fenceq)) {
cmd = QTAILQ_FIRST(&g->fenceq);
QTAILQ_REMOVE(&g->fenceq, cmd, next);
g->inflight--;
g_free(cmd);
}
virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev));
}
static void
virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config)
{
VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
memcpy(config, &g->virtio_config, sizeof(g->virtio_config));
}
static void
virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config)
{
VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
const struct virtio_gpu_config *vgconfig =
(const struct virtio_gpu_config *)config;
if (vgconfig->events_clear) {
g->virtio_config.events_read &= ~vgconfig->events_clear;
}
}
/*
* For historical reasons virtio_gpu does not adhere to virtio migration
* scheme as described in doc/virtio-migration.txt, in a sense that no
* save/load callback are provided to the core. Instead the device data
* is saved/loaded after the core data.
*
* Because of this we need a special vmsd.
*/
static const VMStateDescription vmstate_virtio_gpu = {
.name = "virtio-gpu",
.minimum_version_id = VIRTIO_GPU_VM_VERSION,
.version_id = VIRTIO_GPU_VM_VERSION,
.fields = (VMStateField[]) {
VMSTATE_VIRTIO_DEVICE /* core */,
{
.name = "virtio-gpu",
.info = &(const VMStateInfo) {
.name = "virtio-gpu",
.get = virtio_gpu_load,
.put = virtio_gpu_save,
},
.flags = VMS_SINGLE,
} /* device */,
VMSTATE_END_OF_LIST()
},
};
static Property virtio_gpu_properties[] = {
VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf),
DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem,
256 * MiB),
DEFINE_PROP_BIT("blob", VirtIOGPU, parent_obj.conf.flags,
VIRTIO_GPU_FLAG_BLOB_ENABLED, false),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_gpu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
VirtIOGPUBaseClass *vgbc = &vgc->parent;
vgc->handle_ctrl = virtio_gpu_handle_ctrl;
vgc->process_cmd = virtio_gpu_simple_process_cmd;
vgc->update_cursor_data = virtio_gpu_update_cursor_data;
vgbc->gl_flushed = virtio_gpu_handle_gl_flushed;
vdc->realize = virtio_gpu_device_realize;
vdc->reset = virtio_gpu_reset;
vdc->get_config = virtio_gpu_get_config;
vdc->set_config = virtio_gpu_set_config;
dc->vmsd = &vmstate_virtio_gpu;
device_class_set_props(dc, virtio_gpu_properties);
}
static const TypeInfo virtio_gpu_info = {
.name = TYPE_VIRTIO_GPU,
.parent = TYPE_VIRTIO_GPU_BASE,
.instance_size = sizeof(VirtIOGPU),
.class_size = sizeof(VirtIOGPUClass),
.class_init = virtio_gpu_class_init,
};
module_obj(TYPE_VIRTIO_GPU);
module_kconfig(VIRTIO_GPU);
static void virtio_register_types(void)
{
type_register_static(&virtio_gpu_info);
}
type_init(virtio_register_types)
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