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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/iov.h"
#include "qemu/module.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "system/system.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-gpu-bswap.h"
#include "hw/virtio/virtio-gpu-pixman.h"
#include "hw/qdev-properties.h"
#include <virglrenderer.h>
static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,
struct virtio_gpu_scanout *s,
uint32_t resource_id)
{
VirtIOGPUGL *gl = VIRTIO_GPU_GL(g);
uint32_t width, height;
uint32_t pixels, *data;
if (gl->renderer_state != RS_INITED) {
return;
}
data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
if (!data) {
return;
}
if (width != s->current_cursor->width ||
height != s->current_cursor->height) {
free(data);
return;
}
pixels = s->current_cursor->width * s->current_cursor->height;
memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
free(data);
}
static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
{
VirtIOGPU *g = VIRTIO_GPU(b);
virtio_gpu_process_cmdq(g);
}
static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
VirtIOGPUGL *gl = VIRTIO_GPU_GL(vdev);
struct virtio_gpu_ctrl_command *cmd;
if (!virtio_queue_ready(vq)) {
return;
}
switch (gl->renderer_state) {
case RS_RESET:
virtio_gpu_virgl_reset(g);
/* fallthrough */
case RS_START:
if (virtio_gpu_virgl_init(g)) {
gl->renderer_state = RS_INIT_FAILED;
return;
}
gl->renderer_state = RS_INITED;
break;
case RS_INIT_FAILED:
return;
case RS_INITED:
break;
}
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);
virtio_gpu_virgl_fence_poll(g);
}
static void virtio_gpu_gl_reset(VirtIODevice *vdev)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
VirtIOGPUGL *gl = VIRTIO_GPU_GL(vdev);
virtio_gpu_reset(vdev);
/*
* GL functions must be called with the associated GL context in main
* thread, and when the renderer is unblocked.
*/
if (gl->renderer_state == RS_INITED) {
virtio_gpu_virgl_reset_scanout(g);
gl->renderer_state = RS_RESET;
}
}
static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
{
ERRP_GUARD();
VirtIOGPU *g = VIRTIO_GPU(qdev);
#if HOST_BIG_ENDIAN
error_setg(errp, "virgl is not supported on bigendian platforms");
return;
#endif
if (!object_resolve_path_type("", TYPE_VIRTIO_GPU_GL, NULL)) {
error_setg(errp, "at most one %s device is permitted", TYPE_VIRTIO_GPU_GL);
return;
}
if (!display_opengl) {
error_setg(errp,
"The display backend does not have OpenGL support enabled");
error_append_hint(errp,
"It can be enabled with '-display BACKEND,gl=on' "
"where BACKEND is the name of the display backend "
"to use.\n");
return;
}
g->parent_obj.conf.flags |= (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
g->capset_ids = virtio_gpu_virgl_get_capsets(g);
VIRTIO_GPU_BASE(g)->virtio_config.num_capsets = g->capset_ids->len;
#if VIRGL_VERSION_MAJOR >= 1
g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_CONTEXT_INIT_ENABLED;
#endif
virtio_gpu_device_realize(qdev, errp);
}
static const Property virtio_gpu_gl_properties[] = {
DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
VIRTIO_GPU_FLAG_STATS_ENABLED, false),
DEFINE_PROP_BIT("venus", VirtIOGPU, parent_obj.conf.flags,
VIRTIO_GPU_FLAG_VENUS_ENABLED, false),
};
static void virtio_gpu_gl_device_unrealize(DeviceState *qdev)
{
VirtIOGPU *g = VIRTIO_GPU(qdev);
VirtIOGPUGL *gl = VIRTIO_GPU_GL(qdev);
if (gl->renderer_state >= RS_INITED) {
#if VIRGL_VERSION_MAJOR >= 1
qemu_bh_delete(gl->cmdq_resume_bh);
#endif
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
timer_free(gl->print_stats);
}
timer_free(gl->fence_poll);
virgl_renderer_cleanup(NULL);
}
gl->renderer_state = RS_START;
g_array_unref(g->capset_ids);
}
static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
VirtIOGPUBaseClass *vbc = VIRTIO_GPU_BASE_CLASS(klass);
VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
vbc->gl_flushed = virtio_gpu_gl_flushed;
vgc->handle_ctrl = virtio_gpu_gl_handle_ctrl;
vgc->process_cmd = virtio_gpu_virgl_process_cmd;
vgc->update_cursor_data = virtio_gpu_gl_update_cursor_data;
vdc->realize = virtio_gpu_gl_device_realize;
vdc->unrealize = virtio_gpu_gl_device_unrealize;
vdc->reset = virtio_gpu_gl_reset;
device_class_set_props(dc, virtio_gpu_gl_properties);
}
static const TypeInfo virtio_gpu_gl_info = {
.name = TYPE_VIRTIO_GPU_GL,
.parent = TYPE_VIRTIO_GPU,
.instance_size = sizeof(VirtIOGPUGL),
.class_init = virtio_gpu_gl_class_init,
};
module_obj(TYPE_VIRTIO_GPU_GL);
module_kconfig(VIRTIO_GPU);
static void virtio_register_types(void)
{
type_register_static(&virtio_gpu_gl_info);
}
type_init(virtio_register_types)
module_dep("hw-display-virtio-gpu");
module_dep("ui-opengl");
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