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 #include <virglrenderer.h>
  27
  28 static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,
  29                                              struct virtio_gpu_scanout *s,
  30                                              uint32_t resource_id)
  31 {
  32     uint32_t width, height;
  33     uint32_t pixels, *data;
  34
  35     if (g->parent_obj.use_virgl_renderer) {
  36         data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
  37         if (!data) {
  38             return;
  39         }
  40
  41         if (width != s->current_cursor->width ||
  42             height != s->current_cursor->height) {
  43             free(data);
  44             return;
  45         }
  46
  47         pixels = s->current_cursor->width * s->current_cursor->height;
  48         memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
  49         free(data);
  50         return;
  51     }
  52     virtio_gpu_update_cursor_data(g, s, resource_id);
  53 }
  54
  55 static void virtio_gpu_gl_process_cmd(VirtIOGPU *g,
  56                                       struct virtio_gpu_ctrl_command *cmd)
  57 {
  58     if (g->parent_obj.use_virgl_renderer) {
  59         virtio_gpu_virgl_process_cmd(g, cmd);
  60         return;
  61     }
  62     virtio_gpu_simple_process_cmd(g, cmd);
  63 }
  64
  65 static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
  66 {
  67     VirtIOGPU *g = VIRTIO_GPU(b);
  68
  69     if (g->renderer_reset) {
  70         g->renderer_reset = false;
  71         virtio_gpu_virgl_reset(g);
  72     }
  73     virtio_gpu_process_cmdq(g);
  74 }
  75
  76 static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
  77 {
  78     VirtIOGPU *g = VIRTIO_GPU(vdev);
  79     struct virtio_gpu_ctrl_command *cmd;
  80
  81     if (!virtio_queue_ready(vq)) {
  82         return;
  83     }
  84
  85     if (!g->renderer_inited && g->parent_obj.use_virgl_renderer) {
  86         virtio_gpu_virgl_init(g);
  87         g->renderer_inited = true;
  88     }
  89
  90     cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  91     while (cmd) {
  92         cmd->vq = vq;
  93         cmd->error = 0;
  94         cmd->finished = false;
  95         QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
  96         cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
  97     }
  98
  99     virtio_gpu_process_cmdq(g);
 100
 101     if (g->parent_obj.use_virgl_renderer) {
 102         virtio_gpu_virgl_fence_poll(g);
 103     }
 104 }
 105
 106 static void virtio_gpu_gl_reset(VirtIODevice *vdev)
 107 {
 108     VirtIOGPU *g = VIRTIO_GPU(vdev);
 109
 110     virtio_gpu_reset(vdev);
 111
 112     if (g->parent_obj.use_virgl_renderer) {
 113         if (g->parent_obj.renderer_blocked) {
 114             g->renderer_reset = true;
 115         } else {
 116             virtio_gpu_virgl_reset(g);
 117         }
 118         g->parent_obj.use_virgl_renderer = false;
 119     }
 120 }
 121
 122 static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
 123 {
 124     VirtIOGPU *g = VIRTIO_GPU(qdev);
 125
 126 #if defined(HOST_WORDS_BIGENDIAN)
 127     error_setg(errp, "virgl is not supported on bigendian platforms");
 128     return;
 129 #endif
 130
 131     if (!display_opengl) {
 132         error_setg(errp, "opengl is not available");
 133         return;
 134     }
 135
 136     g->parent_obj.conf.flags |= (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
 137     VIRTIO_GPU_BASE(g)->virtio_config.num_capsets =
 138         virtio_gpu_virgl_get_num_capsets(g);
 139
 140     virtio_gpu_device_realize(qdev, errp);
 141 }
 142
 143 static Property virtio_gpu_gl_properties[] = {
 144     DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
 145                     VIRTIO_GPU_FLAG_STATS_ENABLED, false),
 146     DEFINE_PROP_END_OF_LIST(),
 147 };
 148
 149 static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
 150 {
 151     DeviceClass *dc = DEVICE_CLASS(klass);
 152     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 153     VirtIOGPUBaseClass *vbc = VIRTIO_GPU_BASE_CLASS(klass);
 154     VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
 155
 156     vbc->gl_flushed = virtio_gpu_gl_flushed;
 157     vgc->handle_ctrl = virtio_gpu_gl_handle_ctrl;
 158     vgc->process_cmd = virtio_gpu_gl_process_cmd;
 159     vgc->update_cursor_data = virtio_gpu_gl_update_cursor_data;
 160
 161     vdc->realize = virtio_gpu_gl_device_realize;
 162     vdc->reset = virtio_gpu_gl_reset;
 163     device_class_set_props(dc, virtio_gpu_gl_properties);
 164 }
 165
 166 static const TypeInfo virtio_gpu_gl_info = {
 167     .name = TYPE_VIRTIO_GPU_GL,
 168     .parent = TYPE_VIRTIO_GPU,
 169     .instance_size = sizeof(VirtIOGPUGL),
 170     .class_init = virtio_gpu_gl_class_init,
 171 };
 172
 173 static void virtio_register_types(void)
 174 {
 175     type_register_static(&virtio_gpu_gl_info);
 176 }
 177
 178 type_init(virtio_register_types)