Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Virtio vhost-user GPU Device |
| 3 | * |
| 4 | * Copyright Red Hat, Inc. 2013-2018 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Dave Airlie <airlied@redhat.com> |
| 8 | * Gerd Hoffmann <kraxel@redhat.com> |
| 9 | * Marc-André Lureau <marcandre.lureau@redhat.com> |
| 10 | * |
| 11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 12 | * See the COPYING file in the top-level directory. |
| 13 | */ |
| 14 | #include "qemu/osdep.h" |
| 15 | #include "qemu/drm.h" |
| 16 | #include "qapi/error.h" |
| 17 | #include "qemu/sockets.h" |
| 18 | |
| 19 | #include <pixman.h> |
| 20 | #include <glib-unix.h> |
| 21 | |
| 22 | #include "vugpu.h" |
| 23 | #include "hw/virtio/virtio-gpu-bswap.h" |
| 24 | #include "hw/virtio/virtio-gpu-pixman.h" |
| 25 | #include "virgl.h" |
| 26 | #include "vugbm.h" |
| 27 | |
Stefan Hajnoczi | 6f5fd83 | 2019-06-26 08:48:13 +0100 | [diff] [blame] | 28 | enum { |
| 29 | VHOST_USER_GPU_MAX_QUEUES = 2, |
| 30 | }; |
| 31 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 32 | struct virtio_gpu_simple_resource { |
| 33 | uint32_t resource_id; |
| 34 | uint32_t width; |
| 35 | uint32_t height; |
| 36 | uint32_t format; |
| 37 | struct iovec *iov; |
| 38 | unsigned int iov_cnt; |
| 39 | uint32_t scanout_bitmask; |
| 40 | pixman_image_t *image; |
| 41 | struct vugbm_buffer buffer; |
| 42 | QTAILQ_ENTRY(virtio_gpu_simple_resource) next; |
| 43 | }; |
| 44 | |
| 45 | static gboolean opt_print_caps; |
| 46 | static int opt_fdnum = -1; |
| 47 | static char *opt_socket_path; |
| 48 | static char *opt_render_node; |
| 49 | static gboolean opt_virgl; |
| 50 | |
| 51 | static void vg_handle_ctrl(VuDev *dev, int qidx); |
Li Qiang | 3ea32d1 | 2021-05-15 20:04:03 -0700 | [diff] [blame] | 52 | static void vg_cleanup_mapping(VuGpu *g, |
| 53 | struct virtio_gpu_simple_resource *res); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 54 | |
| 55 | static const char * |
| 56 | vg_cmd_to_string(int cmd) |
| 57 | { |
| 58 | #define CMD(cmd) [cmd] = #cmd |
| 59 | static const char *vg_cmd_str[] = { |
| 60 | CMD(VIRTIO_GPU_UNDEFINED), |
| 61 | |
| 62 | /* 2d commands */ |
| 63 | CMD(VIRTIO_GPU_CMD_GET_DISPLAY_INFO), |
| 64 | CMD(VIRTIO_GPU_CMD_RESOURCE_CREATE_2D), |
| 65 | CMD(VIRTIO_GPU_CMD_RESOURCE_UNREF), |
| 66 | CMD(VIRTIO_GPU_CMD_SET_SCANOUT), |
| 67 | CMD(VIRTIO_GPU_CMD_RESOURCE_FLUSH), |
| 68 | CMD(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D), |
| 69 | CMD(VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING), |
| 70 | CMD(VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING), |
| 71 | CMD(VIRTIO_GPU_CMD_GET_CAPSET_INFO), |
| 72 | CMD(VIRTIO_GPU_CMD_GET_CAPSET), |
| 73 | |
| 74 | /* 3d commands */ |
| 75 | CMD(VIRTIO_GPU_CMD_CTX_CREATE), |
| 76 | CMD(VIRTIO_GPU_CMD_CTX_DESTROY), |
| 77 | CMD(VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE), |
| 78 | CMD(VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE), |
| 79 | CMD(VIRTIO_GPU_CMD_RESOURCE_CREATE_3D), |
| 80 | CMD(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D), |
| 81 | CMD(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D), |
| 82 | CMD(VIRTIO_GPU_CMD_SUBMIT_3D), |
| 83 | |
| 84 | /* cursor commands */ |
| 85 | CMD(VIRTIO_GPU_CMD_UPDATE_CURSOR), |
| 86 | CMD(VIRTIO_GPU_CMD_MOVE_CURSOR), |
| 87 | }; |
| 88 | #undef REQ |
| 89 | |
| 90 | if (cmd >= 0 && cmd < G_N_ELEMENTS(vg_cmd_str)) { |
| 91 | return vg_cmd_str[cmd]; |
| 92 | } else { |
| 93 | return "unknown"; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | static int |
| 98 | vg_sock_fd_read(int sock, void *buf, ssize_t buflen) |
| 99 | { |
| 100 | int ret; |
| 101 | |
| 102 | do { |
| 103 | ret = read(sock, buf, buflen); |
| 104 | } while (ret < 0 && (errno == EINTR || errno == EAGAIN)); |
| 105 | |
| 106 | g_warn_if_fail(ret == buflen); |
| 107 | return ret; |
| 108 | } |
| 109 | |
| 110 | static void |
| 111 | vg_sock_fd_close(VuGpu *g) |
| 112 | { |
| 113 | if (g->sock_fd >= 0) { |
| 114 | close(g->sock_fd); |
| 115 | g->sock_fd = -1; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static gboolean |
| 120 | source_wait_cb(gint fd, GIOCondition condition, gpointer user_data) |
| 121 | { |
| 122 | VuGpu *g = user_data; |
| 123 | |
| 124 | if (!vg_recv_msg(g, VHOST_USER_GPU_DMABUF_UPDATE, 0, NULL)) { |
| 125 | return G_SOURCE_CONTINUE; |
| 126 | } |
| 127 | |
| 128 | /* resume */ |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 129 | g->wait_in = 0; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 130 | vg_handle_ctrl(&g->dev.parent, 0); |
| 131 | |
| 132 | return G_SOURCE_REMOVE; |
| 133 | } |
| 134 | |
| 135 | void |
| 136 | vg_wait_ok(VuGpu *g) |
| 137 | { |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 138 | assert(g->wait_in == 0); |
| 139 | g->wait_in = g_unix_fd_add(g->sock_fd, G_IO_IN | G_IO_HUP, |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 140 | source_wait_cb, g); |
| 141 | } |
| 142 | |
| 143 | static int |
| 144 | vg_sock_fd_write(int sock, const void *buf, ssize_t buflen, int fd) |
| 145 | { |
| 146 | ssize_t ret; |
Marc-André Lureau | c715130 | 2019-06-05 16:58:29 +0200 | [diff] [blame] | 147 | struct iovec iov = { |
| 148 | .iov_base = (void *)buf, |
| 149 | .iov_len = buflen, |
| 150 | }; |
| 151 | struct msghdr msg = { |
| 152 | .msg_iov = &iov, |
| 153 | .msg_iovlen = 1, |
| 154 | }; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 155 | union { |
| 156 | struct cmsghdr cmsghdr; |
| 157 | char control[CMSG_SPACE(sizeof(int))]; |
| 158 | } cmsgu; |
| 159 | struct cmsghdr *cmsg; |
| 160 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 161 | if (fd != -1) { |
| 162 | msg.msg_control = cmsgu.control; |
| 163 | msg.msg_controllen = sizeof(cmsgu.control); |
| 164 | |
| 165 | cmsg = CMSG_FIRSTHDR(&msg); |
| 166 | cmsg->cmsg_len = CMSG_LEN(sizeof(int)); |
| 167 | cmsg->cmsg_level = SOL_SOCKET; |
| 168 | cmsg->cmsg_type = SCM_RIGHTS; |
| 169 | |
| 170 | *((int *)CMSG_DATA(cmsg)) = fd; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | do { |
| 174 | ret = sendmsg(sock, &msg, 0); |
| 175 | } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); |
| 176 | |
| 177 | g_warn_if_fail(ret == buflen); |
| 178 | return ret; |
| 179 | } |
| 180 | |
| 181 | void |
| 182 | vg_send_msg(VuGpu *vg, const VhostUserGpuMsg *msg, int fd) |
| 183 | { |
| 184 | if (vg_sock_fd_write(vg->sock_fd, msg, |
| 185 | VHOST_USER_GPU_HDR_SIZE + msg->size, fd) < 0) { |
| 186 | vg_sock_fd_close(vg); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | bool |
| 191 | vg_recv_msg(VuGpu *g, uint32_t expect_req, uint32_t expect_size, |
| 192 | gpointer payload) |
| 193 | { |
| 194 | uint32_t req, flags, size; |
| 195 | |
| 196 | if (vg_sock_fd_read(g->sock_fd, &req, sizeof(req)) < 0 || |
| 197 | vg_sock_fd_read(g->sock_fd, &flags, sizeof(flags)) < 0 || |
| 198 | vg_sock_fd_read(g->sock_fd, &size, sizeof(size)) < 0) { |
| 199 | goto err; |
| 200 | } |
| 201 | |
| 202 | g_return_val_if_fail(req == expect_req, false); |
| 203 | g_return_val_if_fail(flags & VHOST_USER_GPU_MSG_FLAG_REPLY, false); |
| 204 | g_return_val_if_fail(size == expect_size, false); |
| 205 | |
| 206 | if (size && vg_sock_fd_read(g->sock_fd, payload, size) != size) { |
| 207 | goto err; |
| 208 | } |
| 209 | |
| 210 | return true; |
| 211 | |
| 212 | err: |
| 213 | vg_sock_fd_close(g); |
| 214 | return false; |
| 215 | } |
| 216 | |
| 217 | static struct virtio_gpu_simple_resource * |
| 218 | virtio_gpu_find_resource(VuGpu *g, uint32_t resource_id) |
| 219 | { |
| 220 | struct virtio_gpu_simple_resource *res; |
| 221 | |
| 222 | QTAILQ_FOREACH(res, &g->reslist, next) { |
| 223 | if (res->resource_id == resource_id) { |
| 224 | return res; |
| 225 | } |
| 226 | } |
| 227 | return NULL; |
| 228 | } |
| 229 | |
| 230 | void |
| 231 | vg_ctrl_response(VuGpu *g, |
| 232 | struct virtio_gpu_ctrl_command *cmd, |
| 233 | struct virtio_gpu_ctrl_hdr *resp, |
| 234 | size_t resp_len) |
| 235 | { |
| 236 | size_t s; |
| 237 | |
| 238 | if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) { |
| 239 | resp->flags |= VIRTIO_GPU_FLAG_FENCE; |
| 240 | resp->fence_id = cmd->cmd_hdr.fence_id; |
| 241 | resp->ctx_id = cmd->cmd_hdr.ctx_id; |
| 242 | } |
| 243 | virtio_gpu_ctrl_hdr_bswap(resp); |
| 244 | s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len); |
| 245 | if (s != resp_len) { |
| 246 | g_critical("%s: response size incorrect %zu vs %zu", |
| 247 | __func__, s, resp_len); |
| 248 | } |
| 249 | vu_queue_push(&g->dev.parent, cmd->vq, &cmd->elem, s); |
| 250 | vu_queue_notify(&g->dev.parent, cmd->vq); |
Marc-André Lureau | 72e631c | 2021-02-04 14:52:15 +0400 | [diff] [blame] | 251 | cmd->state = VG_CMD_STATE_FINISHED; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | void |
| 255 | vg_ctrl_response_nodata(VuGpu *g, |
| 256 | struct virtio_gpu_ctrl_command *cmd, |
| 257 | enum virtio_gpu_ctrl_type type) |
| 258 | { |
| 259 | struct virtio_gpu_ctrl_hdr resp = { |
| 260 | .type = type, |
| 261 | }; |
| 262 | |
| 263 | vg_ctrl_response(g, cmd, &resp, sizeof(resp)); |
| 264 | } |
| 265 | |
Marc-André Lureau | bd690fe | 2021-02-04 14:52:16 +0400 | [diff] [blame] | 266 | |
| 267 | static gboolean |
| 268 | get_display_info_cb(gint fd, GIOCondition condition, gpointer user_data) |
| 269 | { |
| 270 | struct virtio_gpu_resp_display_info dpy_info = { {} }; |
| 271 | VuGpu *vg = user_data; |
| 272 | struct virtio_gpu_ctrl_command *cmd = QTAILQ_LAST(&vg->fenceq); |
| 273 | |
| 274 | g_debug("disp info cb"); |
| 275 | assert(cmd->cmd_hdr.type == VIRTIO_GPU_CMD_GET_DISPLAY_INFO); |
| 276 | if (!vg_recv_msg(vg, VHOST_USER_GPU_GET_DISPLAY_INFO, |
| 277 | sizeof(dpy_info), &dpy_info)) { |
| 278 | return G_SOURCE_CONTINUE; |
| 279 | } |
| 280 | |
| 281 | QTAILQ_REMOVE(&vg->fenceq, cmd, next); |
| 282 | vg_ctrl_response(vg, cmd, &dpy_info.hdr, sizeof(dpy_info)); |
| 283 | |
| 284 | vg->wait_in = 0; |
| 285 | vg_handle_ctrl(&vg->dev.parent, 0); |
| 286 | |
| 287 | return G_SOURCE_REMOVE; |
| 288 | } |
| 289 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 290 | void |
| 291 | vg_get_display_info(VuGpu *vg, struct virtio_gpu_ctrl_command *cmd) |
| 292 | { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 293 | VhostUserGpuMsg msg = { |
| 294 | .request = VHOST_USER_GPU_GET_DISPLAY_INFO, |
| 295 | .size = 0, |
| 296 | }; |
| 297 | |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 298 | assert(vg->wait_in == 0); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 299 | |
| 300 | vg_send_msg(vg, &msg, -1); |
Marc-André Lureau | bd690fe | 2021-02-04 14:52:16 +0400 | [diff] [blame] | 301 | vg->wait_in = g_unix_fd_add(vg->sock_fd, G_IO_IN | G_IO_HUP, |
| 302 | get_display_info_cb, vg); |
| 303 | cmd->state = VG_CMD_STATE_PENDING; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 304 | } |
| 305 | |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 306 | static gboolean |
| 307 | get_edid_cb(gint fd, GIOCondition condition, gpointer user_data) |
| 308 | { |
| 309 | struct virtio_gpu_resp_edid resp_edid; |
| 310 | VuGpu *vg = user_data; |
| 311 | struct virtio_gpu_ctrl_command *cmd = QTAILQ_LAST(&vg->fenceq); |
| 312 | |
| 313 | g_debug("get edid cb"); |
| 314 | assert(cmd->cmd_hdr.type == VIRTIO_GPU_CMD_GET_EDID); |
| 315 | if (!vg_recv_msg(vg, VHOST_USER_GPU_GET_EDID, |
| 316 | sizeof(resp_edid), &resp_edid)) { |
| 317 | return G_SOURCE_CONTINUE; |
| 318 | } |
| 319 | |
| 320 | QTAILQ_REMOVE(&vg->fenceq, cmd, next); |
| 321 | vg_ctrl_response(vg, cmd, &resp_edid.hdr, sizeof(resp_edid)); |
| 322 | |
| 323 | vg->wait_in = 0; |
| 324 | vg_handle_ctrl(&vg->dev.parent, 0); |
| 325 | |
| 326 | return G_SOURCE_REMOVE; |
| 327 | } |
| 328 | |
| 329 | void |
| 330 | vg_get_edid(VuGpu *vg, struct virtio_gpu_ctrl_command *cmd) |
| 331 | { |
| 332 | struct virtio_gpu_cmd_get_edid get_edid; |
| 333 | |
| 334 | VUGPU_FILL_CMD(get_edid); |
| 335 | virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); |
| 336 | |
| 337 | VhostUserGpuMsg msg = { |
| 338 | .request = VHOST_USER_GPU_GET_EDID, |
| 339 | .size = sizeof(VhostUserGpuEdidRequest), |
| 340 | .payload.edid_req = { |
| 341 | .scanout_id = get_edid.scanout, |
| 342 | }, |
| 343 | }; |
| 344 | |
| 345 | assert(vg->wait_in == 0); |
| 346 | |
| 347 | vg_send_msg(vg, &msg, -1); |
| 348 | vg->wait_in = g_unix_fd_add(vg->sock_fd, G_IO_IN | G_IO_HUP, |
| 349 | get_edid_cb, vg); |
| 350 | cmd->state = VG_CMD_STATE_PENDING; |
| 351 | } |
| 352 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 353 | static void |
| 354 | vg_resource_create_2d(VuGpu *g, |
| 355 | struct virtio_gpu_ctrl_command *cmd) |
| 356 | { |
| 357 | pixman_format_code_t pformat; |
| 358 | struct virtio_gpu_simple_resource *res; |
| 359 | struct virtio_gpu_resource_create_2d c2d; |
| 360 | |
| 361 | VUGPU_FILL_CMD(c2d); |
| 362 | virtio_gpu_bswap_32(&c2d, sizeof(c2d)); |
| 363 | |
| 364 | if (c2d.resource_id == 0) { |
| 365 | g_critical("%s: resource id 0 is not allowed", __func__); |
| 366 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 367 | return; |
| 368 | } |
| 369 | |
| 370 | res = virtio_gpu_find_resource(g, c2d.resource_id); |
| 371 | if (res) { |
| 372 | g_critical("%s: resource already exists %d", __func__, c2d.resource_id); |
| 373 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 374 | return; |
| 375 | } |
| 376 | |
| 377 | res = g_new0(struct virtio_gpu_simple_resource, 1); |
| 378 | res->width = c2d.width; |
| 379 | res->height = c2d.height; |
| 380 | res->format = c2d.format; |
| 381 | res->resource_id = c2d.resource_id; |
| 382 | |
| 383 | pformat = virtio_gpu_get_pixman_format(c2d.format); |
| 384 | if (!pformat) { |
| 385 | g_critical("%s: host couldn't handle guest format %d", |
| 386 | __func__, c2d.format); |
| 387 | g_free(res); |
| 388 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; |
| 389 | return; |
| 390 | } |
| 391 | vugbm_buffer_create(&res->buffer, &g->gdev, c2d.width, c2d.height); |
| 392 | res->image = pixman_image_create_bits(pformat, |
| 393 | c2d.width, |
| 394 | c2d.height, |
| 395 | (uint32_t *)res->buffer.mmap, |
| 396 | res->buffer.stride); |
| 397 | if (!res->image) { |
| 398 | g_critical("%s: resource creation failed %d %d %d", |
| 399 | __func__, c2d.resource_id, c2d.width, c2d.height); |
Li Qiang | 86dd8fa | 2021-05-15 20:03:57 -0700 | [diff] [blame] | 400 | vugbm_buffer_destroy(&res->buffer); |
Gerd Hoffmann | 25b2ef2 | 2021-06-04 12:37:14 +0200 | [diff] [blame] | 401 | g_free(res); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 402 | cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; |
| 403 | return; |
| 404 | } |
| 405 | |
| 406 | QTAILQ_INSERT_HEAD(&g->reslist, res, next); |
| 407 | } |
| 408 | |
| 409 | static void |
| 410 | vg_disable_scanout(VuGpu *g, int scanout_id) |
| 411 | { |
| 412 | struct virtio_gpu_scanout *scanout = &g->scanout[scanout_id]; |
| 413 | struct virtio_gpu_simple_resource *res; |
| 414 | |
| 415 | if (scanout->resource_id == 0) { |
| 416 | return; |
| 417 | } |
| 418 | |
| 419 | res = virtio_gpu_find_resource(g, scanout->resource_id); |
| 420 | if (res) { |
| 421 | res->scanout_bitmask &= ~(1 << scanout_id); |
| 422 | } |
| 423 | |
| 424 | scanout->width = 0; |
| 425 | scanout->height = 0; |
| 426 | |
Marc-André Lureau | 1e40d19 | 2019-06-05 16:58:25 +0200 | [diff] [blame] | 427 | if (g->sock_fd >= 0) { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 428 | VhostUserGpuMsg msg = { |
| 429 | .request = VHOST_USER_GPU_SCANOUT, |
| 430 | .size = sizeof(VhostUserGpuScanout), |
| 431 | .payload.scanout.scanout_id = scanout_id, |
| 432 | }; |
| 433 | vg_send_msg(g, &msg, -1); |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | static void |
| 438 | vg_resource_destroy(VuGpu *g, |
| 439 | struct virtio_gpu_simple_resource *res) |
| 440 | { |
| 441 | int i; |
| 442 | |
| 443 | if (res->scanout_bitmask) { |
| 444 | for (i = 0; i < VIRTIO_GPU_MAX_SCANOUTS; i++) { |
| 445 | if (res->scanout_bitmask & (1 << i)) { |
| 446 | vg_disable_scanout(g, i); |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | vugbm_buffer_destroy(&res->buffer); |
Li Qiang | 3ea32d1 | 2021-05-15 20:04:03 -0700 | [diff] [blame] | 452 | vg_cleanup_mapping(g, res); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 453 | pixman_image_unref(res->image); |
| 454 | QTAILQ_REMOVE(&g->reslist, res, next); |
| 455 | g_free(res); |
| 456 | } |
| 457 | |
| 458 | static void |
| 459 | vg_resource_unref(VuGpu *g, |
| 460 | struct virtio_gpu_ctrl_command *cmd) |
| 461 | { |
| 462 | struct virtio_gpu_simple_resource *res; |
| 463 | struct virtio_gpu_resource_unref unref; |
| 464 | |
| 465 | VUGPU_FILL_CMD(unref); |
| 466 | virtio_gpu_bswap_32(&unref, sizeof(unref)); |
| 467 | |
| 468 | res = virtio_gpu_find_resource(g, unref.resource_id); |
| 469 | if (!res) { |
| 470 | g_critical("%s: illegal resource specified %d", |
| 471 | __func__, unref.resource_id); |
| 472 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 473 | return; |
| 474 | } |
| 475 | vg_resource_destroy(g, res); |
| 476 | } |
| 477 | |
| 478 | int |
| 479 | vg_create_mapping_iov(VuGpu *g, |
| 480 | struct virtio_gpu_resource_attach_backing *ab, |
| 481 | struct virtio_gpu_ctrl_command *cmd, |
| 482 | struct iovec **iov) |
| 483 | { |
| 484 | struct virtio_gpu_mem_entry *ents; |
| 485 | size_t esize, s; |
| 486 | int i; |
| 487 | |
| 488 | if (ab->nr_entries > 16384) { |
| 489 | g_critical("%s: nr_entries is too big (%d > 16384)", |
| 490 | __func__, ab->nr_entries); |
| 491 | return -1; |
| 492 | } |
| 493 | |
| 494 | esize = sizeof(*ents) * ab->nr_entries; |
| 495 | ents = g_malloc(esize); |
| 496 | s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, |
| 497 | sizeof(*ab), ents, esize); |
| 498 | if (s != esize) { |
| 499 | g_critical("%s: command data size incorrect %zu vs %zu", |
| 500 | __func__, s, esize); |
| 501 | g_free(ents); |
| 502 | return -1; |
| 503 | } |
| 504 | |
Markus Armbruster | b21e238 | 2022-03-15 15:41:56 +0100 | [diff] [blame] | 505 | *iov = g_new0(struct iovec, ab->nr_entries); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 506 | for (i = 0; i < ab->nr_entries; i++) { |
| 507 | uint64_t len = ents[i].length; |
| 508 | (*iov)[i].iov_len = ents[i].length; |
| 509 | (*iov)[i].iov_base = vu_gpa_to_va(&g->dev.parent, &len, ents[i].addr); |
| 510 | if (!(*iov)[i].iov_base || len != ents[i].length) { |
| 511 | g_critical("%s: resource %d element %d", |
| 512 | __func__, ab->resource_id, i); |
| 513 | g_free(*iov); |
| 514 | g_free(ents); |
| 515 | *iov = NULL; |
| 516 | return -1; |
| 517 | } |
| 518 | } |
| 519 | g_free(ents); |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | static void |
| 524 | vg_resource_attach_backing(VuGpu *g, |
| 525 | struct virtio_gpu_ctrl_command *cmd) |
| 526 | { |
| 527 | struct virtio_gpu_simple_resource *res; |
| 528 | struct virtio_gpu_resource_attach_backing ab; |
| 529 | int ret; |
| 530 | |
| 531 | VUGPU_FILL_CMD(ab); |
| 532 | virtio_gpu_bswap_32(&ab, sizeof(ab)); |
| 533 | |
| 534 | res = virtio_gpu_find_resource(g, ab.resource_id); |
| 535 | if (!res) { |
| 536 | g_critical("%s: illegal resource specified %d", |
| 537 | __func__, ab.resource_id); |
| 538 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 539 | return; |
| 540 | } |
| 541 | |
Li Qiang | b9f7985 | 2021-05-15 20:03:58 -0700 | [diff] [blame] | 542 | if (res->iov) { |
| 543 | cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; |
| 544 | return; |
| 545 | } |
| 546 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 547 | ret = vg_create_mapping_iov(g, &ab, cmd, &res->iov); |
| 548 | if (ret != 0) { |
| 549 | cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; |
| 550 | return; |
| 551 | } |
| 552 | |
| 553 | res->iov_cnt = ab.nr_entries; |
| 554 | } |
| 555 | |
Li Qiang | 3ea32d1 | 2021-05-15 20:04:03 -0700 | [diff] [blame] | 556 | /* Though currently only free iov, maybe later will do more work. */ |
| 557 | void vg_cleanup_mapping_iov(VuGpu *g, |
| 558 | struct iovec *iov, uint32_t count) |
| 559 | { |
| 560 | g_free(iov); |
| 561 | } |
| 562 | |
| 563 | static void |
| 564 | vg_cleanup_mapping(VuGpu *g, |
| 565 | struct virtio_gpu_simple_resource *res) |
| 566 | { |
| 567 | vg_cleanup_mapping_iov(g, res->iov, res->iov_cnt); |
| 568 | res->iov = NULL; |
| 569 | res->iov_cnt = 0; |
| 570 | } |
| 571 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 572 | static void |
| 573 | vg_resource_detach_backing(VuGpu *g, |
| 574 | struct virtio_gpu_ctrl_command *cmd) |
| 575 | { |
| 576 | struct virtio_gpu_simple_resource *res; |
| 577 | struct virtio_gpu_resource_detach_backing detach; |
| 578 | |
| 579 | VUGPU_FILL_CMD(detach); |
| 580 | virtio_gpu_bswap_32(&detach, sizeof(detach)); |
| 581 | |
| 582 | res = virtio_gpu_find_resource(g, detach.resource_id); |
| 583 | if (!res || !res->iov) { |
| 584 | g_critical("%s: illegal resource specified %d", |
| 585 | __func__, detach.resource_id); |
| 586 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 587 | return; |
| 588 | } |
| 589 | |
Li Qiang | 3ea32d1 | 2021-05-15 20:04:03 -0700 | [diff] [blame] | 590 | vg_cleanup_mapping(g, res); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | static void |
| 594 | vg_transfer_to_host_2d(VuGpu *g, |
| 595 | struct virtio_gpu_ctrl_command *cmd) |
| 596 | { |
| 597 | struct virtio_gpu_simple_resource *res; |
| 598 | int h; |
| 599 | uint32_t src_offset, dst_offset, stride; |
| 600 | int bpp; |
| 601 | pixman_format_code_t format; |
| 602 | struct virtio_gpu_transfer_to_host_2d t2d; |
| 603 | |
| 604 | VUGPU_FILL_CMD(t2d); |
| 605 | virtio_gpu_t2d_bswap(&t2d); |
| 606 | |
| 607 | res = virtio_gpu_find_resource(g, t2d.resource_id); |
| 608 | if (!res || !res->iov) { |
| 609 | g_critical("%s: illegal resource specified %d", |
| 610 | __func__, t2d.resource_id); |
| 611 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 612 | return; |
| 613 | } |
| 614 | |
| 615 | if (t2d.r.x > res->width || |
| 616 | t2d.r.y > res->height || |
| 617 | t2d.r.width > res->width || |
| 618 | t2d.r.height > res->height || |
| 619 | t2d.r.x + t2d.r.width > res->width || |
| 620 | t2d.r.y + t2d.r.height > res->height) { |
| 621 | g_critical("%s: transfer bounds outside resource" |
| 622 | " bounds for resource %d: %d %d %d %d vs %d %d", |
| 623 | __func__, t2d.resource_id, t2d.r.x, t2d.r.y, |
| 624 | t2d.r.width, t2d.r.height, res->width, res->height); |
| 625 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; |
| 626 | return; |
| 627 | } |
| 628 | |
| 629 | format = pixman_image_get_format(res->image); |
| 630 | bpp = (PIXMAN_FORMAT_BPP(format) + 7) / 8; |
| 631 | stride = pixman_image_get_stride(res->image); |
| 632 | |
| 633 | if (t2d.offset || t2d.r.x || t2d.r.y || |
| 634 | t2d.r.width != pixman_image_get_width(res->image)) { |
| 635 | void *img_data = pixman_image_get_data(res->image); |
| 636 | for (h = 0; h < t2d.r.height; h++) { |
| 637 | src_offset = t2d.offset + stride * h; |
| 638 | dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); |
| 639 | |
| 640 | iov_to_buf(res->iov, res->iov_cnt, src_offset, |
| 641 | img_data |
| 642 | + dst_offset, t2d.r.width * bpp); |
| 643 | } |
| 644 | } else { |
| 645 | iov_to_buf(res->iov, res->iov_cnt, 0, |
| 646 | pixman_image_get_data(res->image), |
| 647 | pixman_image_get_stride(res->image) |
| 648 | * pixman_image_get_height(res->image)); |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | static void |
| 653 | vg_set_scanout(VuGpu *g, |
| 654 | struct virtio_gpu_ctrl_command *cmd) |
| 655 | { |
| 656 | struct virtio_gpu_simple_resource *res, *ores; |
| 657 | struct virtio_gpu_scanout *scanout; |
| 658 | struct virtio_gpu_set_scanout ss; |
| 659 | int fd; |
| 660 | |
| 661 | VUGPU_FILL_CMD(ss); |
| 662 | virtio_gpu_bswap_32(&ss, sizeof(ss)); |
| 663 | |
| 664 | if (ss.scanout_id >= VIRTIO_GPU_MAX_SCANOUTS) { |
| 665 | g_critical("%s: illegal scanout id specified %d", |
| 666 | __func__, ss.scanout_id); |
| 667 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; |
| 668 | return; |
| 669 | } |
| 670 | |
| 671 | if (ss.resource_id == 0) { |
| 672 | vg_disable_scanout(g, ss.scanout_id); |
| 673 | return; |
| 674 | } |
| 675 | |
| 676 | /* create a surface for this scanout */ |
| 677 | res = virtio_gpu_find_resource(g, ss.resource_id); |
| 678 | if (!res) { |
| 679 | g_critical("%s: illegal resource specified %d", |
| 680 | __func__, ss.resource_id); |
| 681 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 682 | return; |
| 683 | } |
| 684 | |
| 685 | if (ss.r.x > res->width || |
| 686 | ss.r.y > res->height || |
| 687 | ss.r.width > res->width || |
| 688 | ss.r.height > res->height || |
| 689 | ss.r.x + ss.r.width > res->width || |
| 690 | ss.r.y + ss.r.height > res->height) { |
| 691 | g_critical("%s: illegal scanout %d bounds for" |
| 692 | " resource %d, (%d,%d)+%d,%d vs %d %d", |
| 693 | __func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y, |
| 694 | ss.r.width, ss.r.height, res->width, res->height); |
| 695 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; |
| 696 | return; |
| 697 | } |
| 698 | |
| 699 | scanout = &g->scanout[ss.scanout_id]; |
| 700 | |
| 701 | ores = virtio_gpu_find_resource(g, scanout->resource_id); |
| 702 | if (ores) { |
| 703 | ores->scanout_bitmask &= ~(1 << ss.scanout_id); |
| 704 | } |
| 705 | |
| 706 | res->scanout_bitmask |= (1 << ss.scanout_id); |
| 707 | scanout->resource_id = ss.resource_id; |
| 708 | scanout->x = ss.r.x; |
| 709 | scanout->y = ss.r.y; |
| 710 | scanout->width = ss.r.width; |
| 711 | scanout->height = ss.r.height; |
| 712 | |
| 713 | struct vugbm_buffer *buffer = &res->buffer; |
| 714 | |
| 715 | if (vugbm_buffer_can_get_dmabuf_fd(buffer)) { |
| 716 | VhostUserGpuMsg msg = { |
| 717 | .request = VHOST_USER_GPU_DMABUF_SCANOUT, |
| 718 | .size = sizeof(VhostUserGpuDMABUFScanout), |
| 719 | .payload.dmabuf_scanout = (VhostUserGpuDMABUFScanout) { |
| 720 | .scanout_id = ss.scanout_id, |
| 721 | .x = ss.r.x, |
| 722 | .y = ss.r.y, |
| 723 | .width = ss.r.width, |
| 724 | .height = ss.r.height, |
| 725 | .fd_width = buffer->width, |
| 726 | .fd_height = buffer->height, |
| 727 | .fd_stride = buffer->stride, |
| 728 | .fd_drm_fourcc = buffer->format |
| 729 | } |
| 730 | }; |
| 731 | |
| 732 | if (vugbm_buffer_get_dmabuf_fd(buffer, &fd)) { |
| 733 | vg_send_msg(g, &msg, fd); |
| 734 | close(fd); |
| 735 | } |
| 736 | } else { |
| 737 | VhostUserGpuMsg msg = { |
| 738 | .request = VHOST_USER_GPU_SCANOUT, |
| 739 | .size = sizeof(VhostUserGpuScanout), |
| 740 | .payload.scanout = (VhostUserGpuScanout) { |
| 741 | .scanout_id = ss.scanout_id, |
| 742 | .width = scanout->width, |
| 743 | .height = scanout->height |
| 744 | } |
| 745 | }; |
| 746 | vg_send_msg(g, &msg, -1); |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | static void |
| 751 | vg_resource_flush(VuGpu *g, |
| 752 | struct virtio_gpu_ctrl_command *cmd) |
| 753 | { |
| 754 | struct virtio_gpu_simple_resource *res; |
| 755 | struct virtio_gpu_resource_flush rf; |
| 756 | pixman_region16_t flush_region; |
| 757 | int i; |
| 758 | |
| 759 | VUGPU_FILL_CMD(rf); |
| 760 | virtio_gpu_bswap_32(&rf, sizeof(rf)); |
| 761 | |
| 762 | res = virtio_gpu_find_resource(g, rf.resource_id); |
| 763 | if (!res) { |
| 764 | g_critical("%s: illegal resource specified %d\n", |
| 765 | __func__, rf.resource_id); |
| 766 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; |
| 767 | return; |
| 768 | } |
| 769 | |
| 770 | if (rf.r.x > res->width || |
| 771 | rf.r.y > res->height || |
| 772 | rf.r.width > res->width || |
| 773 | rf.r.height > res->height || |
| 774 | rf.r.x + rf.r.width > res->width || |
| 775 | rf.r.y + rf.r.height > res->height) { |
| 776 | g_critical("%s: flush bounds outside resource" |
| 777 | " bounds for resource %d: %d %d %d %d vs %d %d\n", |
| 778 | __func__, rf.resource_id, rf.r.x, rf.r.y, |
| 779 | rf.r.width, rf.r.height, res->width, res->height); |
| 780 | cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; |
| 781 | return; |
| 782 | } |
| 783 | |
| 784 | pixman_region_init_rect(&flush_region, |
| 785 | rf.r.x, rf.r.y, rf.r.width, rf.r.height); |
| 786 | for (i = 0; i < VIRTIO_GPU_MAX_SCANOUTS; i++) { |
| 787 | struct virtio_gpu_scanout *scanout; |
| 788 | pixman_region16_t region, finalregion; |
| 789 | pixman_box16_t *extents; |
| 790 | |
| 791 | if (!(res->scanout_bitmask & (1 << i))) { |
| 792 | continue; |
| 793 | } |
| 794 | scanout = &g->scanout[i]; |
| 795 | |
| 796 | pixman_region_init(&finalregion); |
| 797 | pixman_region_init_rect(®ion, scanout->x, scanout->y, |
| 798 | scanout->width, scanout->height); |
| 799 | |
| 800 | pixman_region_intersect(&finalregion, &flush_region, ®ion); |
| 801 | |
| 802 | extents = pixman_region_extents(&finalregion); |
| 803 | size_t width = extents->x2 - extents->x1; |
| 804 | size_t height = extents->y2 - extents->y1; |
| 805 | |
| 806 | if (vugbm_buffer_can_get_dmabuf_fd(&res->buffer)) { |
| 807 | VhostUserGpuMsg vmsg = { |
| 808 | .request = VHOST_USER_GPU_DMABUF_UPDATE, |
| 809 | .size = sizeof(VhostUserGpuUpdate), |
| 810 | .payload.update = (VhostUserGpuUpdate) { |
| 811 | .scanout_id = i, |
| 812 | .x = extents->x1, |
| 813 | .y = extents->y1, |
| 814 | .width = width, |
| 815 | .height = height, |
| 816 | } |
| 817 | }; |
| 818 | vg_send_msg(g, &vmsg, -1); |
| 819 | vg_wait_ok(g); |
| 820 | } else { |
| 821 | size_t bpp = |
| 822 | PIXMAN_FORMAT_BPP(pixman_image_get_format(res->image)) / 8; |
| 823 | size_t size = width * height * bpp; |
| 824 | |
| 825 | void *p = g_malloc(VHOST_USER_GPU_HDR_SIZE + |
| 826 | sizeof(VhostUserGpuUpdate) + size); |
| 827 | VhostUserGpuMsg *msg = p; |
| 828 | msg->request = VHOST_USER_GPU_UPDATE; |
| 829 | msg->size = sizeof(VhostUserGpuUpdate) + size; |
| 830 | msg->payload.update = (VhostUserGpuUpdate) { |
| 831 | .scanout_id = i, |
| 832 | .x = extents->x1, |
| 833 | .y = extents->y1, |
| 834 | .width = width, |
| 835 | .height = height, |
| 836 | }; |
Thomas Huth | cc46a7e | 2023-10-09 10:37:25 +0200 | [diff] [blame] | 837 | pixman_image_t *img = |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 838 | pixman_image_create_bits(pixman_image_get_format(res->image), |
| 839 | msg->payload.update.width, |
| 840 | msg->payload.update.height, |
| 841 | p + offsetof(VhostUserGpuMsg, |
| 842 | payload.update.data), |
| 843 | width * bpp); |
| 844 | pixman_image_composite(PIXMAN_OP_SRC, |
Thomas Huth | cc46a7e | 2023-10-09 10:37:25 +0200 | [diff] [blame] | 845 | res->image, NULL, img, |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 846 | extents->x1, extents->y1, |
| 847 | 0, 0, 0, 0, |
| 848 | width, height); |
Thomas Huth | cc46a7e | 2023-10-09 10:37:25 +0200 | [diff] [blame] | 849 | pixman_image_unref(img); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 850 | vg_send_msg(g, msg, -1); |
| 851 | g_free(msg); |
| 852 | } |
| 853 | pixman_region_fini(®ion); |
| 854 | pixman_region_fini(&finalregion); |
| 855 | } |
| 856 | pixman_region_fini(&flush_region); |
| 857 | } |
| 858 | |
| 859 | static void |
| 860 | vg_process_cmd(VuGpu *vg, struct virtio_gpu_ctrl_command *cmd) |
| 861 | { |
| 862 | switch (cmd->cmd_hdr.type) { |
| 863 | case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: |
| 864 | vg_get_display_info(vg, cmd); |
| 865 | break; |
| 866 | case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: |
| 867 | vg_resource_create_2d(vg, cmd); |
| 868 | break; |
| 869 | case VIRTIO_GPU_CMD_RESOURCE_UNREF: |
| 870 | vg_resource_unref(vg, cmd); |
| 871 | break; |
| 872 | case VIRTIO_GPU_CMD_RESOURCE_FLUSH: |
| 873 | vg_resource_flush(vg, cmd); |
| 874 | break; |
| 875 | case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: |
| 876 | vg_transfer_to_host_2d(vg, cmd); |
| 877 | break; |
| 878 | case VIRTIO_GPU_CMD_SET_SCANOUT: |
| 879 | vg_set_scanout(vg, cmd); |
| 880 | break; |
| 881 | case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: |
| 882 | vg_resource_attach_backing(vg, cmd); |
| 883 | break; |
| 884 | case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: |
| 885 | vg_resource_detach_backing(vg, cmd); |
| 886 | break; |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 887 | case VIRTIO_GPU_CMD_GET_EDID: |
| 888 | vg_get_edid(vg, cmd); |
| 889 | break; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 890 | default: |
| 891 | g_warning("TODO handle ctrl %x\n", cmd->cmd_hdr.type); |
| 892 | cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; |
| 893 | break; |
| 894 | } |
Marc-André Lureau | 72e631c | 2021-02-04 14:52:15 +0400 | [diff] [blame] | 895 | if (cmd->state == VG_CMD_STATE_NEW) { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 896 | vg_ctrl_response_nodata(vg, cmd, cmd->error ? cmd->error : |
| 897 | VIRTIO_GPU_RESP_OK_NODATA); |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | static void |
| 902 | vg_handle_ctrl(VuDev *dev, int qidx) |
| 903 | { |
| 904 | VuGpu *vg = container_of(dev, VuGpu, dev.parent); |
| 905 | VuVirtq *vq = vu_get_queue(dev, qidx); |
| 906 | struct virtio_gpu_ctrl_command *cmd = NULL; |
| 907 | size_t len; |
| 908 | |
| 909 | for (;;) { |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 910 | if (vg->wait_in != 0) { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 911 | return; |
| 912 | } |
| 913 | |
| 914 | cmd = vu_queue_pop(dev, vq, sizeof(struct virtio_gpu_ctrl_command)); |
| 915 | if (!cmd) { |
| 916 | break; |
| 917 | } |
| 918 | cmd->vq = vq; |
| 919 | cmd->error = 0; |
Marc-André Lureau | 72e631c | 2021-02-04 14:52:15 +0400 | [diff] [blame] | 920 | cmd->state = VG_CMD_STATE_NEW; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 921 | |
| 922 | len = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, |
| 923 | 0, &cmd->cmd_hdr, sizeof(cmd->cmd_hdr)); |
| 924 | if (len != sizeof(cmd->cmd_hdr)) { |
| 925 | g_warning("%s: command size incorrect %zu vs %zu\n", |
| 926 | __func__, len, sizeof(cmd->cmd_hdr)); |
| 927 | } |
| 928 | |
| 929 | virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr); |
| 930 | g_debug("%d %s\n", cmd->cmd_hdr.type, |
| 931 | vg_cmd_to_string(cmd->cmd_hdr.type)); |
| 932 | |
| 933 | if (vg->virgl) { |
| 934 | vg_virgl_process_cmd(vg, cmd); |
| 935 | } else { |
| 936 | vg_process_cmd(vg, cmd); |
| 937 | } |
| 938 | |
Marc-André Lureau | 72e631c | 2021-02-04 14:52:15 +0400 | [diff] [blame] | 939 | if (cmd->state != VG_CMD_STATE_FINISHED) { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 940 | QTAILQ_INSERT_TAIL(&vg->fenceq, cmd, next); |
| 941 | vg->inflight++; |
| 942 | } else { |
Philippe Mathieu-Daudé | 4ff9712 | 2020-03-23 12:29:41 +0100 | [diff] [blame] | 943 | free(cmd); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 944 | } |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | static void |
| 949 | update_cursor_data_simple(VuGpu *g, uint32_t resource_id, gpointer data) |
| 950 | { |
| 951 | struct virtio_gpu_simple_resource *res; |
| 952 | |
| 953 | res = virtio_gpu_find_resource(g, resource_id); |
| 954 | g_return_if_fail(res != NULL); |
| 955 | g_return_if_fail(pixman_image_get_width(res->image) == 64); |
| 956 | g_return_if_fail(pixman_image_get_height(res->image) == 64); |
| 957 | g_return_if_fail( |
| 958 | PIXMAN_FORMAT_BPP(pixman_image_get_format(res->image)) == 32); |
| 959 | |
| 960 | memcpy(data, pixman_image_get_data(res->image), 64 * 64 * sizeof(uint32_t)); |
| 961 | } |
| 962 | |
| 963 | static void |
| 964 | vg_process_cursor_cmd(VuGpu *g, struct virtio_gpu_update_cursor *cursor) |
| 965 | { |
Marc-André Lureau | 59be75e | 2021-03-12 14:00:45 +0400 | [diff] [blame] | 966 | switch (cursor->hdr.type) { |
| 967 | case VIRTIO_GPU_CMD_MOVE_CURSOR: { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 968 | VhostUserGpuMsg msg = { |
| 969 | .request = cursor->resource_id ? |
| 970 | VHOST_USER_GPU_CURSOR_POS : VHOST_USER_GPU_CURSOR_POS_HIDE, |
| 971 | .size = sizeof(VhostUserGpuCursorPos), |
| 972 | .payload.cursor_pos = { |
| 973 | .scanout_id = cursor->pos.scanout_id, |
| 974 | .x = cursor->pos.x, |
| 975 | .y = cursor->pos.y, |
| 976 | } |
| 977 | }; |
Marc-André Lureau | 59be75e | 2021-03-12 14:00:45 +0400 | [diff] [blame] | 978 | g_debug("%s: move", G_STRFUNC); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 979 | vg_send_msg(g, &msg, -1); |
Marc-André Lureau | 59be75e | 2021-03-12 14:00:45 +0400 | [diff] [blame] | 980 | break; |
| 981 | } |
| 982 | case VIRTIO_GPU_CMD_UPDATE_CURSOR: { |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 983 | VhostUserGpuMsg msg = { |
| 984 | .request = VHOST_USER_GPU_CURSOR_UPDATE, |
| 985 | .size = sizeof(VhostUserGpuCursorUpdate), |
| 986 | .payload.cursor_update = { |
| 987 | .pos = { |
| 988 | .scanout_id = cursor->pos.scanout_id, |
| 989 | .x = cursor->pos.x, |
| 990 | .y = cursor->pos.y, |
| 991 | }, |
| 992 | .hot_x = cursor->hot_x, |
| 993 | .hot_y = cursor->hot_y, |
| 994 | } |
| 995 | }; |
Marc-André Lureau | 59be75e | 2021-03-12 14:00:45 +0400 | [diff] [blame] | 996 | g_debug("%s: update", G_STRFUNC); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 997 | if (g->virgl) { |
| 998 | vg_virgl_update_cursor_data(g, cursor->resource_id, |
| 999 | msg.payload.cursor_update.data); |
| 1000 | } else { |
| 1001 | update_cursor_data_simple(g, cursor->resource_id, |
| 1002 | msg.payload.cursor_update.data); |
| 1003 | } |
| 1004 | vg_send_msg(g, &msg, -1); |
Marc-André Lureau | 59be75e | 2021-03-12 14:00:45 +0400 | [diff] [blame] | 1005 | break; |
| 1006 | } |
| 1007 | default: |
| 1008 | g_debug("%s: unknown cmd %d", G_STRFUNC, cursor->hdr.type); |
| 1009 | break; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | static void |
| 1014 | vg_handle_cursor(VuDev *dev, int qidx) |
| 1015 | { |
| 1016 | VuGpu *g = container_of(dev, VuGpu, dev.parent); |
| 1017 | VuVirtq *vq = vu_get_queue(dev, qidx); |
| 1018 | VuVirtqElement *elem; |
| 1019 | size_t len; |
| 1020 | struct virtio_gpu_update_cursor cursor; |
| 1021 | |
| 1022 | for (;;) { |
| 1023 | elem = vu_queue_pop(dev, vq, sizeof(VuVirtqElement)); |
| 1024 | if (!elem) { |
| 1025 | break; |
| 1026 | } |
| 1027 | g_debug("cursor out:%d in:%d\n", elem->out_num, elem->in_num); |
| 1028 | |
| 1029 | len = iov_to_buf(elem->out_sg, elem->out_num, |
| 1030 | 0, &cursor, sizeof(cursor)); |
| 1031 | if (len != sizeof(cursor)) { |
| 1032 | g_warning("%s: cursor size incorrect %zu vs %zu\n", |
| 1033 | __func__, len, sizeof(cursor)); |
| 1034 | } else { |
| 1035 | virtio_gpu_bswap_32(&cursor, sizeof(cursor)); |
| 1036 | vg_process_cursor_cmd(g, &cursor); |
| 1037 | } |
| 1038 | vu_queue_push(dev, vq, elem, 0); |
| 1039 | vu_queue_notify(dev, vq); |
Philippe Mathieu-Daudé | 4ff9712 | 2020-03-23 12:29:41 +0100 | [diff] [blame] | 1040 | free(elem); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | static void |
| 1045 | vg_panic(VuDev *dev, const char *msg) |
| 1046 | { |
| 1047 | g_critical("%s\n", msg); |
| 1048 | exit(1); |
| 1049 | } |
| 1050 | |
| 1051 | static void |
| 1052 | vg_queue_set_started(VuDev *dev, int qidx, bool started) |
| 1053 | { |
| 1054 | VuVirtq *vq = vu_get_queue(dev, qidx); |
| 1055 | |
| 1056 | g_debug("queue started %d:%d\n", qidx, started); |
| 1057 | |
| 1058 | switch (qidx) { |
| 1059 | case 0: |
| 1060 | vu_set_queue_handler(dev, vq, started ? vg_handle_ctrl : NULL); |
| 1061 | break; |
| 1062 | case 1: |
| 1063 | vu_set_queue_handler(dev, vq, started ? vg_handle_cursor : NULL); |
| 1064 | break; |
| 1065 | default: |
| 1066 | break; |
| 1067 | } |
| 1068 | } |
| 1069 | |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1070 | static gboolean |
| 1071 | protocol_features_cb(gint fd, GIOCondition condition, gpointer user_data) |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1072 | { |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1073 | const uint64_t protocol_edid = (1 << VHOST_USER_GPU_PROTOCOL_F_EDID); |
Erico Nunes | e3c82fe | 2023-07-14 17:38:59 +0200 | [diff] [blame] | 1074 | const uint64_t protocol_dmabuf2 = (1 << VHOST_USER_GPU_PROTOCOL_F_DMABUF2); |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1075 | VuGpu *g = user_data; |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1076 | uint64_t protocol_features; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1077 | VhostUserGpuMsg msg = { |
| 1078 | .request = VHOST_USER_GPU_GET_PROTOCOL_FEATURES |
| 1079 | }; |
| 1080 | |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1081 | if (!vg_recv_msg(g, msg.request, |
| 1082 | sizeof(protocol_features), &protocol_features)) { |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1083 | return G_SOURCE_CONTINUE; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1084 | } |
| 1085 | |
Erico Nunes | e3c82fe | 2023-07-14 17:38:59 +0200 | [diff] [blame] | 1086 | protocol_features &= (protocol_edid | protocol_dmabuf2); |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1087 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1088 | msg = (VhostUserGpuMsg) { |
| 1089 | .request = VHOST_USER_GPU_SET_PROTOCOL_FEATURES, |
| 1090 | .size = sizeof(uint64_t), |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1091 | .payload.u64 = protocol_features, |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1092 | }; |
| 1093 | vg_send_msg(g, &msg, -1); |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1094 | |
| 1095 | g->wait_in = 0; |
| 1096 | vg_handle_ctrl(&g->dev.parent, 0); |
| 1097 | |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1098 | if (g->edid_inited && !(protocol_features & protocol_edid)) { |
| 1099 | g_printerr("EDID feature set by the frontend but it does not support " |
| 1100 | "the EDID vhost-user-gpu protocol.\n"); |
| 1101 | exit(EXIT_FAILURE); |
| 1102 | } |
| 1103 | |
Erico Nunes | e3c82fe | 2023-07-14 17:38:59 +0200 | [diff] [blame] | 1104 | g->use_modifiers = !!(protocol_features & protocol_dmabuf2); |
| 1105 | |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1106 | return G_SOURCE_REMOVE; |
| 1107 | } |
| 1108 | |
| 1109 | static void |
| 1110 | set_gpu_protocol_features(VuGpu *g) |
| 1111 | { |
| 1112 | VhostUserGpuMsg msg = { |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1113 | .request = VHOST_USER_GPU_GET_PROTOCOL_FEATURES, |
Marc-André Lureau | 1f83ea8 | 2021-02-04 14:52:14 +0400 | [diff] [blame] | 1114 | }; |
| 1115 | |
| 1116 | vg_send_msg(g, &msg, -1); |
| 1117 | assert(g->wait_in == 0); |
| 1118 | g->wait_in = g_unix_fd_add(g->sock_fd, G_IO_IN | G_IO_HUP, |
| 1119 | protocol_features_cb, g); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1120 | } |
| 1121 | |
| 1122 | static int |
| 1123 | vg_process_msg(VuDev *dev, VhostUserMsg *msg, int *do_reply) |
| 1124 | { |
| 1125 | VuGpu *g = container_of(dev, VuGpu, dev.parent); |
| 1126 | |
| 1127 | switch (msg->request) { |
| 1128 | case VHOST_USER_GPU_SET_SOCKET: { |
| 1129 | g_return_val_if_fail(msg->fd_num == 1, 1); |
| 1130 | g_return_val_if_fail(g->sock_fd == -1, 1); |
| 1131 | g->sock_fd = msg->fds[0]; |
| 1132 | set_gpu_protocol_features(g); |
| 1133 | return 1; |
| 1134 | } |
| 1135 | default: |
| 1136 | return 0; |
| 1137 | } |
| 1138 | |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | static uint64_t |
| 1143 | vg_get_features(VuDev *dev) |
| 1144 | { |
| 1145 | uint64_t features = 0; |
| 1146 | |
| 1147 | if (opt_virgl) { |
| 1148 | features |= 1 << VIRTIO_GPU_F_VIRGL; |
| 1149 | } |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1150 | features |= 1 << VIRTIO_GPU_F_EDID; |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1151 | |
| 1152 | return features; |
| 1153 | } |
| 1154 | |
| 1155 | static void |
| 1156 | vg_set_features(VuDev *dev, uint64_t features) |
| 1157 | { |
| 1158 | VuGpu *g = container_of(dev, VuGpu, dev.parent); |
| 1159 | bool virgl = features & (1 << VIRTIO_GPU_F_VIRGL); |
| 1160 | |
| 1161 | if (virgl && !g->virgl_inited) { |
| 1162 | if (!vg_virgl_init(g)) { |
| 1163 | vg_panic(dev, "Failed to initialize virgl"); |
| 1164 | } |
| 1165 | g->virgl_inited = true; |
| 1166 | } |
| 1167 | |
Erico Nunes | c064442 | 2023-06-26 18:47:07 +0200 | [diff] [blame] | 1168 | g->edid_inited = !!(features & (1 << VIRTIO_GPU_F_EDID)); |
| 1169 | |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1170 | g->virgl = virgl; |
| 1171 | } |
| 1172 | |
| 1173 | static int |
| 1174 | vg_get_config(VuDev *dev, uint8_t *config, uint32_t len) |
| 1175 | { |
| 1176 | VuGpu *g = container_of(dev, VuGpu, dev.parent); |
| 1177 | |
Stefan Hajnoczi | fa77464 | 2020-11-18 09:16:42 +0000 | [diff] [blame] | 1178 | if (len > sizeof(struct virtio_gpu_config)) { |
| 1179 | return -1; |
| 1180 | } |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1181 | |
| 1182 | if (opt_virgl) { |
| 1183 | g->virtio_config.num_capsets = vg_virgl_get_num_capsets(); |
| 1184 | } |
| 1185 | |
| 1186 | memcpy(config, &g->virtio_config, len); |
| 1187 | |
| 1188 | return 0; |
| 1189 | } |
| 1190 | |
| 1191 | static int |
| 1192 | vg_set_config(VuDev *dev, const uint8_t *data, |
| 1193 | uint32_t offset, uint32_t size, |
| 1194 | uint32_t flags) |
| 1195 | { |
| 1196 | VuGpu *g = container_of(dev, VuGpu, dev.parent); |
| 1197 | struct virtio_gpu_config *config = (struct virtio_gpu_config *)data; |
| 1198 | |
| 1199 | if (config->events_clear) { |
| 1200 | g->virtio_config.events_read &= ~config->events_clear; |
| 1201 | } |
| 1202 | |
| 1203 | return 0; |
| 1204 | } |
| 1205 | |
| 1206 | static const VuDevIface vuiface = { |
| 1207 | .set_features = vg_set_features, |
| 1208 | .get_features = vg_get_features, |
| 1209 | .queue_set_started = vg_queue_set_started, |
| 1210 | .process_msg = vg_process_msg, |
| 1211 | .get_config = vg_get_config, |
| 1212 | .set_config = vg_set_config, |
| 1213 | }; |
| 1214 | |
| 1215 | static void |
| 1216 | vg_destroy(VuGpu *g) |
| 1217 | { |
| 1218 | struct virtio_gpu_simple_resource *res, *tmp; |
| 1219 | |
| 1220 | vug_deinit(&g->dev); |
| 1221 | |
| 1222 | vg_sock_fd_close(g); |
| 1223 | |
| 1224 | QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { |
| 1225 | vg_resource_destroy(g, res); |
| 1226 | } |
| 1227 | |
| 1228 | vugbm_device_destroy(&g->gdev); |
| 1229 | } |
| 1230 | |
| 1231 | static GOptionEntry entries[] = { |
| 1232 | { "print-capabilities", 'c', 0, G_OPTION_ARG_NONE, &opt_print_caps, |
| 1233 | "Print capabilities", NULL }, |
| 1234 | { "fd", 'f', 0, G_OPTION_ARG_INT, &opt_fdnum, |
| 1235 | "Use inherited fd socket", "FDNUM" }, |
| 1236 | { "socket-path", 's', 0, G_OPTION_ARG_FILENAME, &opt_socket_path, |
| 1237 | "Use UNIX socket path", "PATH" }, |
| 1238 | { "render-node", 'r', 0, G_OPTION_ARG_FILENAME, &opt_render_node, |
| 1239 | "Specify DRM render node", "PATH" }, |
| 1240 | { "virgl", 'v', 0, G_OPTION_ARG_NONE, &opt_virgl, |
| 1241 | "Turn virgl rendering on", NULL }, |
| 1242 | { NULL, } |
| 1243 | }; |
| 1244 | |
| 1245 | int |
| 1246 | main(int argc, char *argv[]) |
| 1247 | { |
| 1248 | GOptionContext *context; |
| 1249 | GError *error = NULL; |
| 1250 | GMainLoop *loop = NULL; |
| 1251 | int fd; |
| 1252 | VuGpu g = { .sock_fd = -1, .drm_rnode_fd = -1 }; |
| 1253 | |
| 1254 | QTAILQ_INIT(&g.reslist); |
| 1255 | QTAILQ_INIT(&g.fenceq); |
| 1256 | |
| 1257 | context = g_option_context_new("QEMU vhost-user-gpu"); |
| 1258 | g_option_context_add_main_entries(context, entries, NULL); |
| 1259 | if (!g_option_context_parse(context, &argc, &argv, &error)) { |
| 1260 | g_printerr("Option parsing failed: %s\n", error->message); |
| 1261 | exit(EXIT_FAILURE); |
| 1262 | } |
| 1263 | g_option_context_free(context); |
| 1264 | |
| 1265 | if (opt_print_caps) { |
| 1266 | g_print("{\n"); |
| 1267 | g_print(" \"type\": \"gpu\",\n"); |
| 1268 | g_print(" \"features\": [\n"); |
| 1269 | g_print(" \"render-node\",\n"); |
| 1270 | g_print(" \"virgl\"\n"); |
| 1271 | g_print(" ]\n"); |
| 1272 | g_print("}\n"); |
| 1273 | exit(EXIT_SUCCESS); |
| 1274 | } |
| 1275 | |
| 1276 | g.drm_rnode_fd = qemu_drm_rendernode_open(opt_render_node); |
| 1277 | if (opt_render_node && g.drm_rnode_fd == -1) { |
| 1278 | g_printerr("Failed to open DRM rendernode.\n"); |
| 1279 | exit(EXIT_FAILURE); |
| 1280 | } |
| 1281 | |
Marc-André Lureau | 96ee096 | 2021-03-12 14:00:44 +0400 | [diff] [blame] | 1282 | vugbm_device_init(&g.gdev, g.drm_rnode_fd); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1283 | |
| 1284 | if ((!!opt_socket_path + (opt_fdnum != -1)) != 1) { |
| 1285 | g_printerr("Please specify either --fd or --socket-path\n"); |
| 1286 | exit(EXIT_FAILURE); |
| 1287 | } |
| 1288 | |
| 1289 | if (opt_socket_path) { |
| 1290 | int lsock = unix_listen(opt_socket_path, &error_fatal); |
Marc-André Lureau | 24af03b | 2019-06-05 16:58:26 +0200 | [diff] [blame] | 1291 | if (lsock < 0) { |
| 1292 | g_printerr("Failed to listen on %s.\n", opt_socket_path); |
| 1293 | exit(EXIT_FAILURE); |
| 1294 | } |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1295 | fd = accept(lsock, NULL, NULL); |
| 1296 | close(lsock); |
| 1297 | } else { |
| 1298 | fd = opt_fdnum; |
| 1299 | } |
| 1300 | if (fd == -1) { |
Marc-André Lureau | f55411c | 2019-06-05 16:58:27 +0200 | [diff] [blame] | 1301 | g_printerr("Invalid vhost-user socket.\n"); |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1302 | exit(EXIT_FAILURE); |
| 1303 | } |
| 1304 | |
Stefan Hajnoczi | 6f5fd83 | 2019-06-26 08:48:13 +0100 | [diff] [blame] | 1305 | if (!vug_init(&g.dev, VHOST_USER_GPU_MAX_QUEUES, fd, vg_panic, &vuiface)) { |
| 1306 | g_printerr("Failed to initialize libvhost-user-glib.\n"); |
| 1307 | exit(EXIT_FAILURE); |
| 1308 | } |
Marc-André Lureau | d52c454 | 2019-05-24 15:09:42 +0200 | [diff] [blame] | 1309 | |
| 1310 | loop = g_main_loop_new(NULL, FALSE); |
| 1311 | g_main_loop_run(loop); |
| 1312 | g_main_loop_unref(loop); |
| 1313 | |
| 1314 | vg_destroy(&g); |
| 1315 | if (g.drm_rnode_fd >= 0) { |
| 1316 | close(g.drm_rnode_fd); |
| 1317 | } |
| 1318 | |
| 1319 | return 0; |
| 1320 | } |