hw/display/virtio-gpu-gl.c

   1 /*
   2  * Virtio GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2013-2014
   5  *
   6  * Authors:
   7  *     Dave Airlie <airlied@redhat.com>
   8  *     Gerd Hoffmann <kraxel@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qemu/iov.h"
  16 #include "qemu/module.h"
  17 #include "qemu/error-report.h"
  18 #include "qapi/error.h"
  19 #include "sysemu/sysemu.h"
  20 #include "hw/virtio/virtio.h"
  21 #include "hw/virtio/virtio-gpu.h"
  22 #include "hw/virtio/virtio-gpu-bswap.h"
  23 #include "hw/virtio/virtio-gpu-pixman.h"
  24 #include "hw/qdev-properties.h"
  25
  26 static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
  27 {
  28     VirtIOGPU *g = VIRTIO_GPU(vdev);
  29     struct virtio_gpu_ctrl_command *cmd;
  30
  31     if (!virtio_queue_ready(vq)) {
  32         return;
  33     }
  34
  35     if (!g->renderer_inited && g->parent_obj.use_virgl_renderer) {
  36         virtio_gpu_virgl_init(g);
  37         g->renderer_inited = true;
  38     }
  39
  40     cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  41     while (cmd) {
  42         cmd->vq = vq;
  43         cmd->error = 0;
  44         cmd->finished = false;
  45         QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
  46         cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  47     }
  48
  49     virtio_gpu_process_cmdq(g);
  50
  51     if (g->parent_obj.use_virgl_renderer) {
  52         virtio_gpu_virgl_fence_poll(g);
  53     }
  54 }
  55
  56 static void virtio_gpu_gl_reset(VirtIODevice *vdev)
  57 {
  58     VirtIOGPU *g = VIRTIO_GPU(vdev);
  59
  60     virtio_gpu_reset(vdev);
  61
  62     if (g->parent_obj.use_virgl_renderer) {
  63         if (g->parent_obj.renderer_blocked) {
  64             g->renderer_reset = true;
  65         } else {
  66             virtio_gpu_virgl_reset(g);
  67         }
  68         g->parent_obj.use_virgl_renderer = false;
  69     }
  70 }
  71
  72 static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
  73 {
  74     VirtIOGPU *g = VIRTIO_GPU(qdev);
  75
  76 #if defined(HOST_WORDS_BIGENDIAN)
  77     error_setg(errp, "virgl is not supported on bigendian platforms");
  78     return;
  79 #endif
  80
  81     if (!display_opengl) {
  82         error_setg(errp, "opengl is not available");
  83         return;
  84     }
  85
  86     g->parent_obj.conf.flags |= (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
  87     VIRTIO_GPU_BASE(g)->virtio_config.num_capsets =
  88         virtio_gpu_virgl_get_num_capsets(g);
  89
  90     virtio_gpu_device_realize(qdev, errp);
  91 }
  92
  93 static Property virtio_gpu_gl_properties[] = {
  94     DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
  95                     VIRTIO_GPU_FLAG_STATS_ENABLED, false),
  96     DEFINE_PROP_END_OF_LIST(),
  97 };
  98
  99 static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
 100 {
 101     DeviceClass *dc = DEVICE_CLASS(klass);
 102     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 103     VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
 104
 105     vgc->handle_ctrl = virtio_gpu_gl_handle_ctrl;
 106
 107     vdc->realize = virtio_gpu_gl_device_realize;
 108     vdc->reset = virtio_gpu_gl_reset;
 109     device_class_set_props(dc, virtio_gpu_gl_properties);
 110 }
 111
 112 static const TypeInfo virtio_gpu_gl_info = {
 113     .name = TYPE_VIRTIO_GPU_GL,
 114     .parent = TYPE_VIRTIO_GPU,
 115     .instance_size = sizeof(VirtIOGPUGL),
 116     .class_init = virtio_gpu_gl_class_init,
 117 };
 118
 119 static void virtio_register_types(void)
 120 {
 121     type_register_static(&virtio_gpu_gl_info);
 122 }
 123
 124 type_init(virtio_register_types)