Displaying rendered resources requires blocking qemu GPU to avoid extra framebuffer copies. For an external display, via Spice currently, there is a callback to block/unblock the rendering in the same thread. But with the vhost-user-gpu backend, the qemu process doesn't handle the rendering itself, and the blocking callback isn't effective. Instead, the backend must be notified when the display code is done. Fix this by adding a new GraphicHwOps callback to indicate the GL state is flushed, and we are done manipulating the shared GL resources. Call it from gtk and spice display. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210204105232.834642-19-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
294 lines
8.3 KiB
C
294 lines
8.3 KiB
C
/*
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* Virtio GPU Device
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*
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* Copyright Red Hat, Inc. 2013-2014
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*
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* Authors:
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* Dave Airlie <airlied@redhat.com>
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* Gerd Hoffmann <kraxel@redhat.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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#include "qemu/osdep.h"
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#include "hw/virtio/virtio-gpu.h"
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#include "migration/blocker.h"
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#include "qapi/error.h"
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#include "qemu/error-report.h"
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#include "trace.h"
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void
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virtio_gpu_base_reset(VirtIOGPUBase *g)
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{
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int i;
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g->enable = 0;
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g->use_virgl_renderer = false;
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for (i = 0; i < g->conf.max_outputs; i++) {
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g->scanout[i].resource_id = 0;
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g->scanout[i].width = 0;
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g->scanout[i].height = 0;
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g->scanout[i].x = 0;
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g->scanout[i].y = 0;
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g->scanout[i].ds = NULL;
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}
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}
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void
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virtio_gpu_base_fill_display_info(VirtIOGPUBase *g,
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struct virtio_gpu_resp_display_info *dpy_info)
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{
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int i;
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for (i = 0; i < g->conf.max_outputs; i++) {
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if (g->enabled_output_bitmask & (1 << i)) {
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dpy_info->pmodes[i].enabled = 1;
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dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width);
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dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height);
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}
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}
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}
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static void virtio_gpu_invalidate_display(void *opaque)
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{
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}
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static void virtio_gpu_update_display(void *opaque)
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{
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}
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static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
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{
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}
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static void virtio_gpu_notify_event(VirtIOGPUBase *g, uint32_t event_type)
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{
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g->virtio_config.events_read |= event_type;
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virtio_notify_config(&g->parent_obj);
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}
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static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
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{
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VirtIOGPUBase *g = opaque;
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if (idx >= g->conf.max_outputs) {
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return -1;
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}
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g->req_state[idx].x = info->xoff;
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g->req_state[idx].y = info->yoff;
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g->req_state[idx].width = info->width;
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g->req_state[idx].height = info->height;
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g->req_state[idx].width_mm = info->width_mm;
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g->req_state[idx].height_mm = info->height_mm;
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if (info->width && info->height) {
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g->enabled_output_bitmask |= (1 << idx);
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} else {
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g->enabled_output_bitmask &= ~(1 << idx);
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}
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/* send event to guest */
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virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
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return 0;
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}
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static void
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virtio_gpu_gl_flushed(void *opaque)
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{
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VirtIOGPUBase *g = opaque;
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VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_GET_CLASS(g);
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if (vgc->gl_flushed) {
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vgc->gl_flushed(g);
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}
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}
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static void
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virtio_gpu_gl_block(void *opaque, bool block)
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{
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VirtIOGPUBase *g = opaque;
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if (block) {
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g->renderer_blocked++;
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} else {
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g->renderer_blocked--;
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}
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assert(g->renderer_blocked >= 0);
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}
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static int
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virtio_gpu_get_flags(void *opaque)
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{
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VirtIOGPUBase *g = opaque;
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int flags = GRAPHIC_FLAGS_NONE;
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if (virtio_gpu_virgl_enabled(g->conf)) {
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flags |= GRAPHIC_FLAGS_GL;
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}
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if (virtio_gpu_dmabuf_enabled(g->conf)) {
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flags |= GRAPHIC_FLAGS_DMABUF;
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}
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return flags;
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}
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static const GraphicHwOps virtio_gpu_ops = {
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.get_flags = virtio_gpu_get_flags,
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.invalidate = virtio_gpu_invalidate_display,
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.gfx_update = virtio_gpu_update_display,
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.text_update = virtio_gpu_text_update,
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.ui_info = virtio_gpu_ui_info,
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.gl_block = virtio_gpu_gl_block,
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.gl_flushed = virtio_gpu_gl_flushed,
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};
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bool
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virtio_gpu_base_device_realize(DeviceState *qdev,
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VirtIOHandleOutput ctrl_cb,
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VirtIOHandleOutput cursor_cb,
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Error **errp)
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{
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VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
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VirtIOGPUBase *g = VIRTIO_GPU_BASE(qdev);
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int i;
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if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) {
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error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS);
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return false;
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}
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g->use_virgl_renderer = false;
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if (virtio_gpu_virgl_enabled(g->conf)) {
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error_setg(&g->migration_blocker, "virgl is not yet migratable");
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if (migrate_add_blocker(g->migration_blocker, errp) < 0) {
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error_free(g->migration_blocker);
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return false;
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}
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}
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g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs);
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virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU,
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sizeof(struct virtio_gpu_config));
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if (virtio_gpu_virgl_enabled(g->conf)) {
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/* use larger control queue in 3d mode */
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virtio_add_queue(vdev, 256, ctrl_cb);
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virtio_add_queue(vdev, 16, cursor_cb);
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} else {
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virtio_add_queue(vdev, 64, ctrl_cb);
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virtio_add_queue(vdev, 16, cursor_cb);
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}
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g->enabled_output_bitmask = 1;
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g->req_state[0].width = g->conf.xres;
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g->req_state[0].height = g->conf.yres;
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g->hw_ops = &virtio_gpu_ops;
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for (i = 0; i < g->conf.max_outputs; i++) {
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g->scanout[i].con =
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graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
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if (i > 0) {
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dpy_gfx_replace_surface(g->scanout[i].con, NULL);
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}
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}
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return true;
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}
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static uint64_t
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virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features,
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Error **errp)
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{
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VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
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if (virtio_gpu_virgl_enabled(g->conf)) {
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features |= (1 << VIRTIO_GPU_F_VIRGL);
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}
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if (virtio_gpu_edid_enabled(g->conf)) {
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features |= (1 << VIRTIO_GPU_F_EDID);
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}
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return features;
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}
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static void
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virtio_gpu_base_set_features(VirtIODevice *vdev, uint64_t features)
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{
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static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL);
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VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
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g->use_virgl_renderer = ((features & virgl) == virgl);
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trace_virtio_gpu_features(g->use_virgl_renderer);
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}
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static void
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virtio_gpu_base_device_unrealize(DeviceState *qdev)
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{
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VirtIOGPUBase *g = VIRTIO_GPU_BASE(qdev);
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if (g->migration_blocker) {
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migrate_del_blocker(g->migration_blocker);
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error_free(g->migration_blocker);
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}
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}
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static void
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virtio_gpu_base_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
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vdc->unrealize = virtio_gpu_base_device_unrealize;
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vdc->get_features = virtio_gpu_base_get_features;
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vdc->set_features = virtio_gpu_base_set_features;
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set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
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dc->hotpluggable = false;
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}
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static const TypeInfo virtio_gpu_base_info = {
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.name = TYPE_VIRTIO_GPU_BASE,
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.parent = TYPE_VIRTIO_DEVICE,
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.instance_size = sizeof(VirtIOGPUBase),
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.class_size = sizeof(VirtIOGPUBaseClass),
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.class_init = virtio_gpu_base_class_init,
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.abstract = true
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};
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static void
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virtio_register_types(void)
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{
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type_register_static(&virtio_gpu_base_info);
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}
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type_init(virtio_register_types)
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr) != 24);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor) != 56);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d) != 40);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout) != 48);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush) != 48);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d) != 56);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry) != 16);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info) != 408);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d) != 72);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_3d) != 72);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_create) != 96);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_destroy) != 24);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_resource) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_cmd_submit) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset_info) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset_info) != 40);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset) != 32);
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QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset) != 24);
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