diff options
Diffstat (limited to 'hw/display/virtio-gpu-gl.c')
| -rw-r--r-- | hw/display/virtio-gpu-gl.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c new file mode 100644 index 000000000..6cc4313b1 --- /dev/null +++ b/hw/display/virtio-gpu-gl.c @@ -0,0 +1,171 @@ +/* + * 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 "sysemu/sysemu.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) +{ + 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) { + 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; + } + + if (!gl->renderer_inited) { + virtio_gpu_virgl_init(g); + gl->renderer_inited = true; + } + if (gl->renderer_reset) { + gl->renderer_reset = false; + virtio_gpu_virgl_reset(g); + } + + 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_inited && !gl->renderer_reset) { + virtio_gpu_virgl_reset_scanout(g); + gl->renderer_reset = true; + } +} + +static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp) +{ + VirtIOGPU *g = VIRTIO_GPU(qdev); + +#if defined(HOST_WORDS_BIGENDIAN) + 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, "opengl is not available"); + return; + } + + g->parent_obj.conf.flags |= (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED); + VIRTIO_GPU_BASE(g)->virtio_config.num_capsets = + virtio_gpu_virgl_get_num_capsets(g); + + virtio_gpu_device_realize(qdev, errp); +} + +static Property virtio_gpu_gl_properties[] = { + DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags, + VIRTIO_GPU_FLAG_STATS_ENABLED, false), + DEFINE_PROP_END_OF_LIST(), +}; + +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->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); + +static void virtio_register_types(void) +{ + type_register_static(&virtio_gpu_gl_info); +} + +type_init(virtio_register_types) + +module_dep("hw-display-virtio-gpu"); |