hw/display/virtio-gpu-base.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
  16 #include "hw/virtio/virtio-gpu.h"
  17 #include "migration/blocker.h"
  18 #include "qapi/error.h"
  19 #include "qemu/error-report.h"
  20 #include "hw/display/edid.h"
  21 #include "trace.h"
  22
  23 void
  24 virtio_gpu_base_reset(VirtIOGPUBase *g)
  25 {
  26     int i;
  27
  28     g->enable = 0;
  29
  30     for (i = 0; i < g->conf.max_outputs; i++) {
  31         g->scanout[i].resource_id = 0;
  32         g->scanout[i].width = 0;
  33         g->scanout[i].height = 0;
  34         g->scanout[i].x = 0;
  35         g->scanout[i].y = 0;
  36         g->scanout[i].ds = NULL;
  37     }
  38 }
  39
  40 void
  41 virtio_gpu_base_fill_display_info(VirtIOGPUBase *g,
  42                                   struct virtio_gpu_resp_display_info *dpy_info)
  43 {
  44     int i;
  45
  46     for (i = 0; i < g->conf.max_outputs; i++) {
  47         if (g->enabled_output_bitmask & (1 << i)) {
  48             dpy_info->pmodes[i].enabled = 1;
  49             dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width);
  50             dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height);
  51         }
  52     }
  53 }
  54
  55 void
  56 virtio_gpu_base_generate_edid(VirtIOGPUBase *g, int scanout,
  57                               struct virtio_gpu_resp_edid *edid)
  58 {
  59     qemu_edid_info info = {
  60         .width_mm = g->req_state[scanout].width_mm,
  61         .height_mm = g->req_state[scanout].height_mm,
  62         .prefx = g->req_state[scanout].width,
  63         .prefy = g->req_state[scanout].height,
  64         .refresh_rate = g->req_state[scanout].refresh_rate,
  65     };
  66
  67     edid->size = cpu_to_le32(sizeof(edid->edid));
  68     qemu_edid_generate(edid->edid, sizeof(edid->edid), &info);
  69 }
  70
  71 static void virtio_gpu_invalidate_display(void *opaque)
  72 {
  73 }
  74
  75 static void virtio_gpu_update_display(void *opaque)
  76 {
  77 }
  78
  79 static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
  80 {
  81 }
  82
  83 static void virtio_gpu_notify_event(VirtIOGPUBase *g, uint32_t event_type)
  84 {
  85     g->virtio_config.events_read |= event_type;
  86     virtio_notify_config(&g->parent_obj);
  87 }
  88
  89 static void virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
  90 {
  91     VirtIOGPUBase *g = opaque;
  92
  93     if (idx >= g->conf.max_outputs) {
  94         return;
  95     }
  96
  97     g->req_state[idx].x = info->xoff;
  98     g->req_state[idx].y = info->yoff;
  99     g->req_state[idx].refresh_rate = info->refresh_rate;
 100     g->req_state[idx].width = info->width;
 101     g->req_state[idx].height = info->height;
 102     g->req_state[idx].width_mm = info->width_mm;
 103     g->req_state[idx].height_mm = info->height_mm;
 104
 105     if (info->width && info->height) {
 106         g->enabled_output_bitmask |= (1 << idx);
 107     } else {
 108         g->enabled_output_bitmask &= ~(1 << idx);
 109     }
 110
 111     /* send event to guest */
 112     virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
 113     return;
 114 }
 115
 116 static void
 117 virtio_gpu_gl_flushed(void *opaque)
 118 {
 119     VirtIOGPUBase *g = opaque;
 120     VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_GET_CLASS(g);
 121
 122     if (vgc->gl_flushed) {
 123         vgc->gl_flushed(g);
 124     }
 125 }
 126
 127 static void
 128 virtio_gpu_gl_block(void *opaque, bool block)
 129 {
 130     VirtIOGPUBase *g = opaque;
 131
 132     if (block) {
 133         g->renderer_blocked++;
 134     } else {
 135         g->renderer_blocked--;
 136     }
 137     assert(g->renderer_blocked >= 0);
 138
 139     if (!block && g->renderer_blocked == 0) {
 140         virtio_gpu_gl_flushed(g);
 141     }
 142 }
 143
 144 static int
 145 virtio_gpu_get_flags(void *opaque)
 146 {
 147     VirtIOGPUBase *g = opaque;
 148     int flags = GRAPHIC_FLAGS_NONE;
 149
 150     if (virtio_gpu_virgl_enabled(g->conf)) {
 151         flags |= GRAPHIC_FLAGS_GL;
 152     }
 153
 154     if (virtio_gpu_dmabuf_enabled(g->conf)) {
 155         flags |= GRAPHIC_FLAGS_DMABUF;
 156     }
 157
 158     return flags;
 159 }
 160
 161 static const GraphicHwOps virtio_gpu_ops = {
 162     .get_flags = virtio_gpu_get_flags,
 163     .invalidate = virtio_gpu_invalidate_display,
 164     .gfx_update = virtio_gpu_update_display,
 165     .text_update = virtio_gpu_text_update,
 166     .ui_info = virtio_gpu_ui_info,
 167     .gl_block = virtio_gpu_gl_block,
 168 };
 169
 170 bool
 171 virtio_gpu_base_device_realize(DeviceState *qdev,
 172                                VirtIOHandleOutput ctrl_cb,
 173                                VirtIOHandleOutput cursor_cb,
 174                                Error **errp)
 175 {
 176     VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
 177     VirtIOGPUBase *g = VIRTIO_GPU_BASE(qdev);
 178     int i;
 179
 180     if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) {
 181         error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS);
 182         return false;
 183     }
 184
 185     if (virtio_gpu_virgl_enabled(g->conf)) {
 186         error_setg(&g->migration_blocker, "virgl is not yet migratable");
 187         if (migrate_add_blocker(&g->migration_blocker, errp) < 0) {
 188             return false;
 189         }
 190     }
 191
 192     g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs);
 193     virtio_init(VIRTIO_DEVICE(g), VIRTIO_ID_GPU,
 194                 sizeof(struct virtio_gpu_config));
 195
 196     if (virtio_gpu_virgl_enabled(g->conf)) {
 197         /* use larger control queue in 3d mode */
 198         virtio_add_queue(vdev, 256, ctrl_cb);
 199         virtio_add_queue(vdev, 16, cursor_cb);
 200     } else {
 201         virtio_add_queue(vdev, 64, ctrl_cb);
 202         virtio_add_queue(vdev, 16, cursor_cb);
 203     }
 204
 205     g->enabled_output_bitmask = 1;
 206
 207     g->req_state[0].width = g->conf.xres;
 208     g->req_state[0].height = g->conf.yres;
 209
 210     g->hw_ops = &virtio_gpu_ops;
 211     for (i = 0; i < g->conf.max_outputs; i++) {
 212         g->scanout[i].con =
 213             graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
 214     }
 215
 216     return true;
 217 }
 218
 219 static uint64_t
 220 virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features,
 221                              Error **errp)
 222 {
 223     VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
 224
 225     if (virtio_gpu_virgl_enabled(g->conf) ||
 226         virtio_gpu_rutabaga_enabled(g->conf)) {
 227         features |= (1 << VIRTIO_GPU_F_VIRGL);
 228     }
 229     if (virtio_gpu_edid_enabled(g->conf)) {
 230         features |= (1 << VIRTIO_GPU_F_EDID);
 231     }
 232     if (virtio_gpu_blob_enabled(g->conf)) {
 233         features |= (1 << VIRTIO_GPU_F_RESOURCE_BLOB);
 234     }
 235     if (virtio_gpu_context_init_enabled(g->conf)) {
 236         features |= (1 << VIRTIO_GPU_F_CONTEXT_INIT);
 237     }
 238
 239     return features;
 240 }
 241
 242 static void
 243 virtio_gpu_base_set_features(VirtIODevice *vdev, uint64_t features)
 244 {
 245     static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL);
 246
 247     trace_virtio_gpu_features(((features & virgl) == virgl));
 248 }
 249
 250 void
 251 virtio_gpu_base_device_unrealize(DeviceState *qdev)
 252 {
 253     VirtIOGPUBase *g = VIRTIO_GPU_BASE(qdev);
 254     VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
 255
 256     virtio_del_queue(vdev, 0);
 257     virtio_del_queue(vdev, 1);
 258     virtio_cleanup(vdev);
 259     migrate_del_blocker(&g->migration_blocker);
 260 }
 261
 262 static void
 263 virtio_gpu_base_class_init(ObjectClass *klass, void *data)
 264 {
 265     DeviceClass *dc = DEVICE_CLASS(klass);
 266     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 267
 268     vdc->unrealize = virtio_gpu_base_device_unrealize;
 269     vdc->get_features = virtio_gpu_base_get_features;
 270     vdc->set_features = virtio_gpu_base_set_features;
 271
 272     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
 273     dc->hotpluggable = false;
 274 }
 275
 276 static const TypeInfo virtio_gpu_base_info = {
 277     .name = TYPE_VIRTIO_GPU_BASE,
 278     .parent = TYPE_VIRTIO_DEVICE,
 279     .instance_size = sizeof(VirtIOGPUBase),
 280     .class_size = sizeof(VirtIOGPUBaseClass),
 281     .class_init = virtio_gpu_base_class_init,
 282     .abstract = true
 283 };
 284 module_obj(TYPE_VIRTIO_GPU_BASE);
 285 module_kconfig(VIRTIO_GPU);
 286
 287 static void
 288 virtio_register_types(void)
 289 {
 290     type_register_static(&virtio_gpu_base_info);
 291 }
 292
 293 type_init(virtio_register_types)
 294
 295 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr)                != 24);
 296 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor)           != 56);
 297 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref)          != 32);
 298 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d)      != 40);
 299 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout)             != 48);
 300 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush)          != 48);
 301 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d)     != 56);
 302 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry)               != 16);
 303 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32);
 304 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32);
 305 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info)       != 408);
 306
 307 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d)        != 72);
 308 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_3d)      != 72);
 309 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_create)              != 96);
 310 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_destroy)             != 24);
 311 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_resource)            != 32);
 312 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_cmd_submit)              != 32);
 313 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset_info)         != 32);
 314 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset_info)        != 40);
 315 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset)              != 32);
 316 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset)             != 24);