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