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_process_cmd(VirtIOGPU *g,
  27                                       struct virtio_gpu_ctrl_command *cmd)
  28 {
  29     if (g->parent_obj.use_virgl_renderer) {
  30         virtio_gpu_virgl_process_cmd(g, cmd);
  31         return;
  32     }
  33     virtio_gpu_simple_process_cmd(g, cmd);
  34 }
  35
  36 static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
  37 {
  38     VirtIOGPU *g = VIRTIO_GPU(b);
  39
  40     if (g->renderer_reset) {
  41         g->renderer_reset = false;
  42         virtio_gpu_virgl_reset(g);
  43     }
  44     virtio_gpu_process_cmdq(g);
  45 }
  46
  47 static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
  48 {
  49     VirtIOGPU *g = VIRTIO_GPU(vdev);
  50     struct virtio_gpu_ctrl_command *cmd;
  51
  52     if (!virtio_queue_ready(vq)) {
  53         return;
  54     }
  55
  56     if (!g->renderer_inited && g->parent_obj.use_virgl_renderer) {
  57         virtio_gpu_virgl_init(g);
  58         g->renderer_inited = true;
  59     }
  60
  61     cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  62     while (cmd) {
  63         cmd->vq = vq;
  64         cmd->error = 0;
  65         cmd->finished = false;
  66         QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
  67         cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  68     }
  69
  70     virtio_gpu_process_cmdq(g);
  71
  72     if (g->parent_obj.use_virgl_renderer) {
  73         virtio_gpu_virgl_fence_poll(g);
  74     }
  75 }
  76
  77 static void virtio_gpu_gl_reset(VirtIODevice *vdev)
  78 {
  79     VirtIOGPU *g = VIRTIO_GPU(vdev);
  80
  81     virtio_gpu_reset(vdev);
  82
  83     if (g->parent_obj.use_virgl_renderer) {
  84         if (g->parent_obj.renderer_blocked) {
  85             g->renderer_reset = true;
  86         } else {
  87             virtio_gpu_virgl_reset(g);
  88         }
  89         g->parent_obj.use_virgl_renderer = false;
  90     }
  91 }
  92
  93 static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
  94 {
  95     VirtIOGPU *g = VIRTIO_GPU(qdev);
  96
  97 #if defined(HOST_WORDS_BIGENDIAN)
  98     error_setg(errp, "virgl is not supported on bigendian platforms");
  99     return;
 100 #endif
 101
 102     if (!display_opengl) {
 103         error_setg(errp, "opengl is not available");
 104         return;
 105     }
 106
 107     g->parent_obj.conf.flags |= (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
 108     VIRTIO_GPU_BASE(g)->virtio_config.num_capsets =
 109         virtio_gpu_virgl_get_num_capsets(g);
 110
 111     virtio_gpu_device_realize(qdev, errp);
 112 }
 113
 114 static Property virtio_gpu_gl_properties[] = {
 115     DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
 116                     VIRTIO_GPU_FLAG_STATS_ENABLED, false),
 117     DEFINE_PROP_END_OF_LIST(),
 118 };
 119
 120 static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
 121 {
 122     DeviceClass *dc = DEVICE_CLASS(klass);
 123     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 124     VirtIOGPUBaseClass *vbc = VIRTIO_GPU_BASE_CLASS(klass);
 125     VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
 126
 127     vbc->gl_flushed = virtio_gpu_gl_flushed;
 128     vgc->handle_ctrl = virtio_gpu_gl_handle_ctrl;
 129     vgc->process_cmd = virtio_gpu_gl_process_cmd;
 130
 131     vdc->realize = virtio_gpu_gl_device_realize;
 132     vdc->reset = virtio_gpu_gl_reset;
 133     device_class_set_props(dc, virtio_gpu_gl_properties);
 134 }
 135
 136 static const TypeInfo virtio_gpu_gl_info = {
 137     .name = TYPE_VIRTIO_GPU_GL,
 138     .parent = TYPE_VIRTIO_GPU,
 139     .instance_size = sizeof(VirtIOGPUGL),
 140     .class_init = virtio_gpu_gl_class_init,
 141 };
 142
 143 static void virtio_register_types(void)
 144 {
 145     type_register_static(&virtio_gpu_gl_info);
 146 }
 147
 148 type_init(virtio_register_types)