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 29 for (i = 0; i < g->conf.max_outputs; i++) { 30 g->scanout[i].resource_id = 0; 31 g->scanout[i].width = 0; 32 g->scanout[i].height = 0; 33 g->scanout[i].x = 0; 34 g->scanout[i].y = 0; 35 g->scanout[i].ds = NULL; 36 } 37 } 38 39 void 40 virtio_gpu_base_fill_display_info(VirtIOGPUBase *g, 41 struct virtio_gpu_resp_display_info *dpy_info) 42 { 43 int i; 44 45 for (i = 0; i < g->conf.max_outputs; i++) { 46 if (g->enabled_output_bitmask & (1 << i)) { 47 dpy_info->pmodes[i].enabled = 1; 48 dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width); 49 dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height); 50 } 51 } 52 } 53 54 static void virtio_gpu_invalidate_display(void *opaque) 55 { 56 } 57 58 static void virtio_gpu_update_display(void *opaque) 59 { 60 } 61 62 static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata) 63 { 64 } 65 66 static void virtio_gpu_notify_event(VirtIOGPUBase *g, uint32_t event_type) 67 { 68 g->virtio_config.events_read |= event_type; 69 virtio_notify_config(&g->parent_obj); 70 } 71 72 static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info) 73 { 74 VirtIOGPUBase *g = opaque; 75 76 if (idx >= g->conf.max_outputs) { 77 return -1; 78 } 79 80 g->req_state[idx].x = info->xoff; 81 g->req_state[idx].y = info->yoff; 82 g->req_state[idx].width = info->width; 83 g->req_state[idx].height = info->height; 84 g->req_state[idx].width_mm = info->width_mm; 85 g->req_state[idx].height_mm = info->height_mm; 86 87 if (info->width && info->height) { 88 g->enabled_output_bitmask |= (1 << idx); 89 } else { 90 g->enabled_output_bitmask &= ~(1 << idx); 91 } 92 93 /* send event to guest */ 94 virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY); 95 return 0; 96 } 97 98 static void 99 virtio_gpu_gl_flushed(void *opaque) 100 { 101 VirtIOGPUBase *g = opaque; 102 VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_GET_CLASS(g); 103 104 if (vgc->gl_flushed) { 105 vgc->gl_flushed(g); 106 } 107 } 108 109 static void 110 virtio_gpu_gl_block(void *opaque, bool block) 111 { 112 VirtIOGPUBase *g = opaque; 113 114 if (block) { 115 g->renderer_blocked++; 116 } else { 117 g->renderer_blocked--; 118 } 119 assert(g->renderer_blocked >= 0); 120 } 121 122 static int 123 virtio_gpu_get_flags(void *opaque) 124 { 125 VirtIOGPUBase *g = opaque; 126 int flags = GRAPHIC_FLAGS_NONE; 127 128 if (virtio_gpu_virgl_enabled(g->conf)) { 129 flags |= GRAPHIC_FLAGS_GL; 130 } 131 132 if (virtio_gpu_dmabuf_enabled(g->conf)) { 133 flags |= GRAPHIC_FLAGS_DMABUF; 134 } 135 136 return flags; 137 } 138 139 static const GraphicHwOps virtio_gpu_ops = { 140 .get_flags = virtio_gpu_get_flags, 141 .invalidate = virtio_gpu_invalidate_display, 142 .gfx_update = virtio_gpu_update_display, 143 .text_update = virtio_gpu_text_update, 144 .ui_info = virtio_gpu_ui_info, 145 .gl_block = virtio_gpu_gl_block, 146 .gl_flushed = virtio_gpu_gl_flushed, 147 }; 148 149 bool 150 virtio_gpu_base_device_realize(DeviceState *qdev, 151 VirtIOHandleOutput ctrl_cb, 152 VirtIOHandleOutput cursor_cb, 153 Error **errp) 154 { 155 VirtIODevice *vdev = VIRTIO_DEVICE(qdev); 156 VirtIOGPUBase *g = VIRTIO_GPU_BASE(qdev); 157 int i; 158 159 if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) { 160 error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS); 161 return false; 162 } 163 164 if (virtio_gpu_virgl_enabled(g->conf)) { 165 error_setg(&g->migration_blocker, "virgl is not yet migratable"); 166 if (migrate_add_blocker(g->migration_blocker, errp) < 0) { 167 error_free(g->migration_blocker); 168 return false; 169 } 170 } 171 172 g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs); 173 virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU, 174 sizeof(struct virtio_gpu_config)); 175 176 if (virtio_gpu_virgl_enabled(g->conf)) { 177 /* use larger control queue in 3d mode */ 178 virtio_add_queue(vdev, 256, ctrl_cb); 179 virtio_add_queue(vdev, 16, cursor_cb); 180 } else { 181 virtio_add_queue(vdev, 64, ctrl_cb); 182 virtio_add_queue(vdev, 16, cursor_cb); 183 } 184 185 g->enabled_output_bitmask = 1; 186 187 g->req_state[0].width = g->conf.xres; 188 g->req_state[0].height = g->conf.yres; 189 190 g->hw_ops = &virtio_gpu_ops; 191 for (i = 0; i < g->conf.max_outputs; i++) { 192 g->scanout[i].con = 193 graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g); 194 } 195 196 return true; 197 } 198 199 static uint64_t 200 virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features, 201 Error **errp) 202 { 203 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 204 205 if (virtio_gpu_virgl_enabled(g->conf)) { 206 features |= (1 << VIRTIO_GPU_F_VIRGL); 207 } 208 if (virtio_gpu_edid_enabled(g->conf)) { 209 features |= (1 << VIRTIO_GPU_F_EDID); 210 } 211 212 return features; 213 } 214 215 static void 216 virtio_gpu_base_set_features(VirtIODevice *vdev, uint64_t features) 217 { 218 static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL); 219 220 trace_virtio_gpu_features(((features & virgl) == virgl)); 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