1*267f6646SMarc-André Lureau /* 2*267f6646SMarc-André Lureau * vhost-user GPU Device 3*267f6646SMarc-André Lureau * 4*267f6646SMarc-André Lureau * Copyright Red Hat, Inc. 2018 5*267f6646SMarc-André Lureau * 6*267f6646SMarc-André Lureau * Authors: 7*267f6646SMarc-André Lureau * Marc-André Lureau <marcandre.lureau@redhat.com> 8*267f6646SMarc-André Lureau * 9*267f6646SMarc-André Lureau * This work is licensed under the terms of the GNU GPL, version 2 or later. 10*267f6646SMarc-André Lureau * See the COPYING file in the top-level directory. 11*267f6646SMarc-André Lureau */ 12*267f6646SMarc-André Lureau 13*267f6646SMarc-André Lureau #include "qemu/osdep.h" 14*267f6646SMarc-André Lureau #include "hw/virtio/virtio-gpu.h" 15*267f6646SMarc-André Lureau #include "chardev/char-fe.h" 16*267f6646SMarc-André Lureau #include "qapi/error.h" 17*267f6646SMarc-André Lureau #include "migration/blocker.h" 18*267f6646SMarc-André Lureau 19*267f6646SMarc-André Lureau #define VHOST_USER_GPU(obj) \ 20*267f6646SMarc-André Lureau OBJECT_CHECK(VhostUserGPU, (obj), TYPE_VHOST_USER_GPU) 21*267f6646SMarc-André Lureau 22*267f6646SMarc-André Lureau typedef enum VhostUserGpuRequest { 23*267f6646SMarc-André Lureau VHOST_USER_GPU_NONE = 0, 24*267f6646SMarc-André Lureau VHOST_USER_GPU_GET_PROTOCOL_FEATURES, 25*267f6646SMarc-André Lureau VHOST_USER_GPU_SET_PROTOCOL_FEATURES, 26*267f6646SMarc-André Lureau VHOST_USER_GPU_GET_DISPLAY_INFO, 27*267f6646SMarc-André Lureau VHOST_USER_GPU_CURSOR_POS, 28*267f6646SMarc-André Lureau VHOST_USER_GPU_CURSOR_POS_HIDE, 29*267f6646SMarc-André Lureau VHOST_USER_GPU_CURSOR_UPDATE, 30*267f6646SMarc-André Lureau VHOST_USER_GPU_SCANOUT, 31*267f6646SMarc-André Lureau VHOST_USER_GPU_UPDATE, 32*267f6646SMarc-André Lureau VHOST_USER_GPU_DMABUF_SCANOUT, 33*267f6646SMarc-André Lureau VHOST_USER_GPU_DMABUF_UPDATE, 34*267f6646SMarc-André Lureau } VhostUserGpuRequest; 35*267f6646SMarc-André Lureau 36*267f6646SMarc-André Lureau typedef struct VhostUserGpuDisplayInfoReply { 37*267f6646SMarc-André Lureau struct virtio_gpu_resp_display_info info; 38*267f6646SMarc-André Lureau } VhostUserGpuDisplayInfoReply; 39*267f6646SMarc-André Lureau 40*267f6646SMarc-André Lureau typedef struct VhostUserGpuCursorPos { 41*267f6646SMarc-André Lureau uint32_t scanout_id; 42*267f6646SMarc-André Lureau uint32_t x; 43*267f6646SMarc-André Lureau uint32_t y; 44*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuCursorPos; 45*267f6646SMarc-André Lureau 46*267f6646SMarc-André Lureau typedef struct VhostUserGpuCursorUpdate { 47*267f6646SMarc-André Lureau VhostUserGpuCursorPos pos; 48*267f6646SMarc-André Lureau uint32_t hot_x; 49*267f6646SMarc-André Lureau uint32_t hot_y; 50*267f6646SMarc-André Lureau uint32_t data[64 * 64]; 51*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuCursorUpdate; 52*267f6646SMarc-André Lureau 53*267f6646SMarc-André Lureau typedef struct VhostUserGpuScanout { 54*267f6646SMarc-André Lureau uint32_t scanout_id; 55*267f6646SMarc-André Lureau uint32_t width; 56*267f6646SMarc-André Lureau uint32_t height; 57*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuScanout; 58*267f6646SMarc-André Lureau 59*267f6646SMarc-André Lureau typedef struct VhostUserGpuUpdate { 60*267f6646SMarc-André Lureau uint32_t scanout_id; 61*267f6646SMarc-André Lureau uint32_t x; 62*267f6646SMarc-André Lureau uint32_t y; 63*267f6646SMarc-André Lureau uint32_t width; 64*267f6646SMarc-André Lureau uint32_t height; 65*267f6646SMarc-André Lureau uint8_t data[]; 66*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuUpdate; 67*267f6646SMarc-André Lureau 68*267f6646SMarc-André Lureau typedef struct VhostUserGpuDMABUFScanout { 69*267f6646SMarc-André Lureau uint32_t scanout_id; 70*267f6646SMarc-André Lureau uint32_t x; 71*267f6646SMarc-André Lureau uint32_t y; 72*267f6646SMarc-André Lureau uint32_t width; 73*267f6646SMarc-André Lureau uint32_t height; 74*267f6646SMarc-André Lureau uint32_t fd_width; 75*267f6646SMarc-André Lureau uint32_t fd_height; 76*267f6646SMarc-André Lureau uint32_t fd_stride; 77*267f6646SMarc-André Lureau uint32_t fd_flags; 78*267f6646SMarc-André Lureau int fd_drm_fourcc; 79*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuDMABUFScanout; 80*267f6646SMarc-André Lureau 81*267f6646SMarc-André Lureau typedef struct VhostUserGpuMsg { 82*267f6646SMarc-André Lureau uint32_t request; /* VhostUserGpuRequest */ 83*267f6646SMarc-André Lureau uint32_t flags; 84*267f6646SMarc-André Lureau uint32_t size; /* the following payload size */ 85*267f6646SMarc-André Lureau union { 86*267f6646SMarc-André Lureau VhostUserGpuCursorPos cursor_pos; 87*267f6646SMarc-André Lureau VhostUserGpuCursorUpdate cursor_update; 88*267f6646SMarc-André Lureau VhostUserGpuScanout scanout; 89*267f6646SMarc-André Lureau VhostUserGpuUpdate update; 90*267f6646SMarc-André Lureau VhostUserGpuDMABUFScanout dmabuf_scanout; 91*267f6646SMarc-André Lureau struct virtio_gpu_resp_display_info display_info; 92*267f6646SMarc-André Lureau uint64_t u64; 93*267f6646SMarc-André Lureau } payload; 94*267f6646SMarc-André Lureau } QEMU_PACKED VhostUserGpuMsg; 95*267f6646SMarc-André Lureau 96*267f6646SMarc-André Lureau static VhostUserGpuMsg m __attribute__ ((unused)); 97*267f6646SMarc-André Lureau #define VHOST_USER_GPU_HDR_SIZE \ 98*267f6646SMarc-André Lureau (sizeof(m.request) + sizeof(m.size) + sizeof(m.flags)) 99*267f6646SMarc-André Lureau 100*267f6646SMarc-André Lureau #define VHOST_USER_GPU_MSG_FLAG_REPLY 0x4 101*267f6646SMarc-André Lureau 102*267f6646SMarc-André Lureau static void vhost_user_gpu_update_blocked(VhostUserGPU *g, bool blocked); 103*267f6646SMarc-André Lureau 104*267f6646SMarc-André Lureau static void 105*267f6646SMarc-André Lureau vhost_user_gpu_handle_cursor(VhostUserGPU *g, VhostUserGpuMsg *msg) 106*267f6646SMarc-André Lureau { 107*267f6646SMarc-André Lureau VhostUserGpuCursorPos *pos = &msg->payload.cursor_pos; 108*267f6646SMarc-André Lureau struct virtio_gpu_scanout *s; 109*267f6646SMarc-André Lureau 110*267f6646SMarc-André Lureau if (pos->scanout_id >= g->parent_obj.conf.max_outputs) { 111*267f6646SMarc-André Lureau return; 112*267f6646SMarc-André Lureau } 113*267f6646SMarc-André Lureau s = &g->parent_obj.scanout[pos->scanout_id]; 114*267f6646SMarc-André Lureau 115*267f6646SMarc-André Lureau if (msg->request == VHOST_USER_GPU_CURSOR_UPDATE) { 116*267f6646SMarc-André Lureau VhostUserGpuCursorUpdate *up = &msg->payload.cursor_update; 117*267f6646SMarc-André Lureau if (!s->current_cursor) { 118*267f6646SMarc-André Lureau s->current_cursor = cursor_alloc(64, 64); 119*267f6646SMarc-André Lureau } 120*267f6646SMarc-André Lureau 121*267f6646SMarc-André Lureau s->current_cursor->hot_x = up->hot_x; 122*267f6646SMarc-André Lureau s->current_cursor->hot_y = up->hot_y; 123*267f6646SMarc-André Lureau 124*267f6646SMarc-André Lureau memcpy(s->current_cursor->data, up->data, 125*267f6646SMarc-André Lureau 64 * 64 * sizeof(uint32_t)); 126*267f6646SMarc-André Lureau 127*267f6646SMarc-André Lureau dpy_cursor_define(s->con, s->current_cursor); 128*267f6646SMarc-André Lureau } 129*267f6646SMarc-André Lureau 130*267f6646SMarc-André Lureau dpy_mouse_set(s->con, pos->x, pos->y, 131*267f6646SMarc-André Lureau msg->request != VHOST_USER_GPU_CURSOR_POS_HIDE); 132*267f6646SMarc-André Lureau } 133*267f6646SMarc-André Lureau 134*267f6646SMarc-André Lureau static void 135*267f6646SMarc-André Lureau vhost_user_gpu_send_msg(VhostUserGPU *g, const VhostUserGpuMsg *msg) 136*267f6646SMarc-André Lureau { 137*267f6646SMarc-André Lureau qemu_chr_fe_write(&g->vhost_chr, (uint8_t *)msg, 138*267f6646SMarc-André Lureau VHOST_USER_GPU_HDR_SIZE + msg->size); 139*267f6646SMarc-André Lureau } 140*267f6646SMarc-André Lureau 141*267f6646SMarc-André Lureau static void 142*267f6646SMarc-André Lureau vhost_user_gpu_unblock(VhostUserGPU *g) 143*267f6646SMarc-André Lureau { 144*267f6646SMarc-André Lureau VhostUserGpuMsg msg = { 145*267f6646SMarc-André Lureau .request = VHOST_USER_GPU_DMABUF_UPDATE, 146*267f6646SMarc-André Lureau .flags = VHOST_USER_GPU_MSG_FLAG_REPLY, 147*267f6646SMarc-André Lureau }; 148*267f6646SMarc-André Lureau 149*267f6646SMarc-André Lureau vhost_user_gpu_send_msg(g, &msg); 150*267f6646SMarc-André Lureau } 151*267f6646SMarc-André Lureau 152*267f6646SMarc-André Lureau static void 153*267f6646SMarc-André Lureau vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg) 154*267f6646SMarc-André Lureau { 155*267f6646SMarc-André Lureau QemuConsole *con = NULL; 156*267f6646SMarc-André Lureau struct virtio_gpu_scanout *s; 157*267f6646SMarc-André Lureau 158*267f6646SMarc-André Lureau switch (msg->request) { 159*267f6646SMarc-André Lureau case VHOST_USER_GPU_GET_PROTOCOL_FEATURES: { 160*267f6646SMarc-André Lureau VhostUserGpuMsg reply = { 161*267f6646SMarc-André Lureau .request = msg->request, 162*267f6646SMarc-André Lureau .flags = VHOST_USER_GPU_MSG_FLAG_REPLY, 163*267f6646SMarc-André Lureau .size = sizeof(uint64_t), 164*267f6646SMarc-André Lureau }; 165*267f6646SMarc-André Lureau 166*267f6646SMarc-André Lureau vhost_user_gpu_send_msg(g, &reply); 167*267f6646SMarc-André Lureau break; 168*267f6646SMarc-André Lureau } 169*267f6646SMarc-André Lureau case VHOST_USER_GPU_SET_PROTOCOL_FEATURES: { 170*267f6646SMarc-André Lureau break; 171*267f6646SMarc-André Lureau } 172*267f6646SMarc-André Lureau case VHOST_USER_GPU_GET_DISPLAY_INFO: { 173*267f6646SMarc-André Lureau struct virtio_gpu_resp_display_info display_info = { {} }; 174*267f6646SMarc-André Lureau VhostUserGpuMsg reply = { 175*267f6646SMarc-André Lureau .request = msg->request, 176*267f6646SMarc-André Lureau .flags = VHOST_USER_GPU_MSG_FLAG_REPLY, 177*267f6646SMarc-André Lureau .size = sizeof(struct virtio_gpu_resp_display_info), 178*267f6646SMarc-André Lureau }; 179*267f6646SMarc-André Lureau 180*267f6646SMarc-André Lureau display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO; 181*267f6646SMarc-André Lureau virtio_gpu_base_fill_display_info(VIRTIO_GPU_BASE(g), &display_info); 182*267f6646SMarc-André Lureau memcpy(&reply.payload.display_info, &display_info, 183*267f6646SMarc-André Lureau sizeof(display_info)); 184*267f6646SMarc-André Lureau vhost_user_gpu_send_msg(g, &reply); 185*267f6646SMarc-André Lureau break; 186*267f6646SMarc-André Lureau } 187*267f6646SMarc-André Lureau case VHOST_USER_GPU_SCANOUT: { 188*267f6646SMarc-André Lureau VhostUserGpuScanout *m = &msg->payload.scanout; 189*267f6646SMarc-André Lureau 190*267f6646SMarc-André Lureau if (m->scanout_id >= g->parent_obj.conf.max_outputs) { 191*267f6646SMarc-André Lureau return; 192*267f6646SMarc-André Lureau } 193*267f6646SMarc-André Lureau 194*267f6646SMarc-André Lureau g->parent_obj.enable = 1; 195*267f6646SMarc-André Lureau s = &g->parent_obj.scanout[m->scanout_id]; 196*267f6646SMarc-André Lureau con = s->con; 197*267f6646SMarc-André Lureau 198*267f6646SMarc-André Lureau if (m->scanout_id == 0 && m->width == 0) { 199*267f6646SMarc-André Lureau s->ds = qemu_create_message_surface(640, 480, 200*267f6646SMarc-André Lureau "Guest disabled display."); 201*267f6646SMarc-André Lureau dpy_gfx_replace_surface(con, s->ds); 202*267f6646SMarc-André Lureau } else { 203*267f6646SMarc-André Lureau s->ds = qemu_create_displaysurface(m->width, m->height); 204*267f6646SMarc-André Lureau /* replace surface on next update */ 205*267f6646SMarc-André Lureau } 206*267f6646SMarc-André Lureau 207*267f6646SMarc-André Lureau break; 208*267f6646SMarc-André Lureau } 209*267f6646SMarc-André Lureau case VHOST_USER_GPU_DMABUF_SCANOUT: { 210*267f6646SMarc-André Lureau VhostUserGpuDMABUFScanout *m = &msg->payload.dmabuf_scanout; 211*267f6646SMarc-André Lureau int fd = qemu_chr_fe_get_msgfd(&g->vhost_chr); 212*267f6646SMarc-André Lureau QemuDmaBuf *dmabuf; 213*267f6646SMarc-André Lureau 214*267f6646SMarc-André Lureau if (m->scanout_id >= g->parent_obj.conf.max_outputs) { 215*267f6646SMarc-André Lureau error_report("invalid scanout: %d", m->scanout_id); 216*267f6646SMarc-André Lureau if (fd >= 0) { 217*267f6646SMarc-André Lureau close(fd); 218*267f6646SMarc-André Lureau } 219*267f6646SMarc-André Lureau break; 220*267f6646SMarc-André Lureau } 221*267f6646SMarc-André Lureau 222*267f6646SMarc-André Lureau g->parent_obj.enable = 1; 223*267f6646SMarc-André Lureau con = g->parent_obj.scanout[m->scanout_id].con; 224*267f6646SMarc-André Lureau dmabuf = &g->dmabuf[m->scanout_id]; 225*267f6646SMarc-André Lureau if (dmabuf->fd >= 0) { 226*267f6646SMarc-André Lureau close(dmabuf->fd); 227*267f6646SMarc-André Lureau dmabuf->fd = -1; 228*267f6646SMarc-André Lureau } 229*267f6646SMarc-André Lureau if (!console_has_gl_dmabuf(con)) { 230*267f6646SMarc-André Lureau /* it would be nice to report that error earlier */ 231*267f6646SMarc-André Lureau error_report("console doesn't support dmabuf!"); 232*267f6646SMarc-André Lureau break; 233*267f6646SMarc-André Lureau } 234*267f6646SMarc-André Lureau dpy_gl_release_dmabuf(con, dmabuf); 235*267f6646SMarc-André Lureau if (fd == -1) { 236*267f6646SMarc-André Lureau dpy_gl_scanout_disable(con); 237*267f6646SMarc-André Lureau break; 238*267f6646SMarc-André Lureau } 239*267f6646SMarc-André Lureau *dmabuf = (QemuDmaBuf) { 240*267f6646SMarc-André Lureau .fd = fd, 241*267f6646SMarc-André Lureau .width = m->fd_width, 242*267f6646SMarc-André Lureau .height = m->fd_height, 243*267f6646SMarc-André Lureau .stride = m->fd_stride, 244*267f6646SMarc-André Lureau .fourcc = m->fd_drm_fourcc, 245*267f6646SMarc-André Lureau .y0_top = m->fd_flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP, 246*267f6646SMarc-André Lureau }; 247*267f6646SMarc-André Lureau dpy_gl_scanout_dmabuf(con, dmabuf); 248*267f6646SMarc-André Lureau break; 249*267f6646SMarc-André Lureau } 250*267f6646SMarc-André Lureau case VHOST_USER_GPU_DMABUF_UPDATE: { 251*267f6646SMarc-André Lureau VhostUserGpuUpdate *m = &msg->payload.update; 252*267f6646SMarc-André Lureau 253*267f6646SMarc-André Lureau if (m->scanout_id >= g->parent_obj.conf.max_outputs || 254*267f6646SMarc-André Lureau !g->parent_obj.scanout[m->scanout_id].con) { 255*267f6646SMarc-André Lureau error_report("invalid scanout update: %d", m->scanout_id); 256*267f6646SMarc-André Lureau vhost_user_gpu_unblock(g); 257*267f6646SMarc-André Lureau break; 258*267f6646SMarc-André Lureau } 259*267f6646SMarc-André Lureau 260*267f6646SMarc-André Lureau con = g->parent_obj.scanout[m->scanout_id].con; 261*267f6646SMarc-André Lureau if (!console_has_gl(con)) { 262*267f6646SMarc-André Lureau error_report("console doesn't support GL!"); 263*267f6646SMarc-André Lureau vhost_user_gpu_unblock(g); 264*267f6646SMarc-André Lureau break; 265*267f6646SMarc-André Lureau } 266*267f6646SMarc-André Lureau dpy_gl_update(con, m->x, m->y, m->width, m->height); 267*267f6646SMarc-André Lureau g->backend_blocked = true; 268*267f6646SMarc-André Lureau break; 269*267f6646SMarc-André Lureau } 270*267f6646SMarc-André Lureau case VHOST_USER_GPU_UPDATE: { 271*267f6646SMarc-André Lureau VhostUserGpuUpdate *m = &msg->payload.update; 272*267f6646SMarc-André Lureau 273*267f6646SMarc-André Lureau if (m->scanout_id >= g->parent_obj.conf.max_outputs) { 274*267f6646SMarc-André Lureau break; 275*267f6646SMarc-André Lureau } 276*267f6646SMarc-André Lureau s = &g->parent_obj.scanout[m->scanout_id]; 277*267f6646SMarc-André Lureau con = s->con; 278*267f6646SMarc-André Lureau pixman_image_t *image = 279*267f6646SMarc-André Lureau pixman_image_create_bits(PIXMAN_x8r8g8b8, 280*267f6646SMarc-André Lureau m->width, 281*267f6646SMarc-André Lureau m->height, 282*267f6646SMarc-André Lureau (uint32_t *)m->data, 283*267f6646SMarc-André Lureau m->width * 4); 284*267f6646SMarc-André Lureau 285*267f6646SMarc-André Lureau pixman_image_composite(PIXMAN_OP_SRC, 286*267f6646SMarc-André Lureau image, NULL, s->ds->image, 287*267f6646SMarc-André Lureau 0, 0, 0, 0, m->x, m->y, m->width, m->height); 288*267f6646SMarc-André Lureau 289*267f6646SMarc-André Lureau pixman_image_unref(image); 290*267f6646SMarc-André Lureau if (qemu_console_surface(con) != s->ds) { 291*267f6646SMarc-André Lureau dpy_gfx_replace_surface(con, s->ds); 292*267f6646SMarc-André Lureau } else { 293*267f6646SMarc-André Lureau dpy_gfx_update(con, m->x, m->y, m->width, m->height); 294*267f6646SMarc-André Lureau } 295*267f6646SMarc-André Lureau break; 296*267f6646SMarc-André Lureau } 297*267f6646SMarc-André Lureau default: 298*267f6646SMarc-André Lureau g_warning("unhandled message %d %d", msg->request, msg->size); 299*267f6646SMarc-André Lureau } 300*267f6646SMarc-André Lureau 301*267f6646SMarc-André Lureau if (con && qemu_console_is_gl_blocked(con)) { 302*267f6646SMarc-André Lureau vhost_user_gpu_update_blocked(g, true); 303*267f6646SMarc-André Lureau } 304*267f6646SMarc-André Lureau } 305*267f6646SMarc-André Lureau 306*267f6646SMarc-André Lureau static void 307*267f6646SMarc-André Lureau vhost_user_gpu_chr_read(void *opaque) 308*267f6646SMarc-André Lureau { 309*267f6646SMarc-André Lureau VhostUserGPU *g = opaque; 310*267f6646SMarc-André Lureau VhostUserGpuMsg *msg = NULL; 311*267f6646SMarc-André Lureau VhostUserGpuRequest request; 312*267f6646SMarc-André Lureau uint32_t size, flags; 313*267f6646SMarc-André Lureau int r; 314*267f6646SMarc-André Lureau 315*267f6646SMarc-André Lureau r = qemu_chr_fe_read_all(&g->vhost_chr, 316*267f6646SMarc-André Lureau (uint8_t *)&request, sizeof(uint32_t)); 317*267f6646SMarc-André Lureau if (r != sizeof(uint32_t)) { 318*267f6646SMarc-André Lureau error_report("failed to read msg header: %d, %d", r, errno); 319*267f6646SMarc-André Lureau goto end; 320*267f6646SMarc-André Lureau } 321*267f6646SMarc-André Lureau 322*267f6646SMarc-André Lureau r = qemu_chr_fe_read_all(&g->vhost_chr, 323*267f6646SMarc-André Lureau (uint8_t *)&flags, sizeof(uint32_t)); 324*267f6646SMarc-André Lureau if (r != sizeof(uint32_t)) { 325*267f6646SMarc-André Lureau error_report("failed to read msg flags"); 326*267f6646SMarc-André Lureau goto end; 327*267f6646SMarc-André Lureau } 328*267f6646SMarc-André Lureau 329*267f6646SMarc-André Lureau r = qemu_chr_fe_read_all(&g->vhost_chr, 330*267f6646SMarc-André Lureau (uint8_t *)&size, sizeof(uint32_t)); 331*267f6646SMarc-André Lureau if (r != sizeof(uint32_t)) { 332*267f6646SMarc-André Lureau error_report("failed to read msg size"); 333*267f6646SMarc-André Lureau goto end; 334*267f6646SMarc-André Lureau } 335*267f6646SMarc-André Lureau 336*267f6646SMarc-André Lureau msg = g_malloc(VHOST_USER_GPU_HDR_SIZE + size); 337*267f6646SMarc-André Lureau g_return_if_fail(msg != NULL); 338*267f6646SMarc-André Lureau 339*267f6646SMarc-André Lureau r = qemu_chr_fe_read_all(&g->vhost_chr, 340*267f6646SMarc-André Lureau (uint8_t *)&msg->payload, size); 341*267f6646SMarc-André Lureau if (r != size) { 342*267f6646SMarc-André Lureau error_report("failed to read msg payload %d != %d", r, size); 343*267f6646SMarc-André Lureau goto end; 344*267f6646SMarc-André Lureau } 345*267f6646SMarc-André Lureau 346*267f6646SMarc-André Lureau msg->request = request; 347*267f6646SMarc-André Lureau msg->flags = size; 348*267f6646SMarc-André Lureau msg->size = size; 349*267f6646SMarc-André Lureau 350*267f6646SMarc-André Lureau if (request == VHOST_USER_GPU_CURSOR_UPDATE || 351*267f6646SMarc-André Lureau request == VHOST_USER_GPU_CURSOR_POS || 352*267f6646SMarc-André Lureau request == VHOST_USER_GPU_CURSOR_POS_HIDE) { 353*267f6646SMarc-André Lureau vhost_user_gpu_handle_cursor(g, msg); 354*267f6646SMarc-André Lureau } else { 355*267f6646SMarc-André Lureau vhost_user_gpu_handle_display(g, msg); 356*267f6646SMarc-André Lureau } 357*267f6646SMarc-André Lureau 358*267f6646SMarc-André Lureau end: 359*267f6646SMarc-André Lureau g_free(msg); 360*267f6646SMarc-André Lureau } 361*267f6646SMarc-André Lureau 362*267f6646SMarc-André Lureau static void 363*267f6646SMarc-André Lureau vhost_user_gpu_update_blocked(VhostUserGPU *g, bool blocked) 364*267f6646SMarc-André Lureau { 365*267f6646SMarc-André Lureau qemu_set_fd_handler(g->vhost_gpu_fd, 366*267f6646SMarc-André Lureau blocked ? NULL : vhost_user_gpu_chr_read, NULL, g); 367*267f6646SMarc-André Lureau } 368*267f6646SMarc-André Lureau 369*267f6646SMarc-André Lureau static void 370*267f6646SMarc-André Lureau vhost_user_gpu_gl_unblock(VirtIOGPUBase *b) 371*267f6646SMarc-André Lureau { 372*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(b); 373*267f6646SMarc-André Lureau 374*267f6646SMarc-André Lureau if (g->backend_blocked) { 375*267f6646SMarc-André Lureau vhost_user_gpu_unblock(VHOST_USER_GPU(g)); 376*267f6646SMarc-André Lureau g->backend_blocked = false; 377*267f6646SMarc-André Lureau } 378*267f6646SMarc-André Lureau 379*267f6646SMarc-André Lureau vhost_user_gpu_update_blocked(VHOST_USER_GPU(g), false); 380*267f6646SMarc-André Lureau } 381*267f6646SMarc-André Lureau 382*267f6646SMarc-André Lureau static bool 383*267f6646SMarc-André Lureau vhost_user_gpu_do_set_socket(VhostUserGPU *g, Error **errp) 384*267f6646SMarc-André Lureau { 385*267f6646SMarc-André Lureau Chardev *chr; 386*267f6646SMarc-André Lureau int sv[2]; 387*267f6646SMarc-André Lureau 388*267f6646SMarc-André Lureau if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) { 389*267f6646SMarc-André Lureau error_setg_errno(errp, errno, "socketpair() failed"); 390*267f6646SMarc-André Lureau return false; 391*267f6646SMarc-André Lureau } 392*267f6646SMarc-André Lureau 393*267f6646SMarc-André Lureau chr = CHARDEV(object_new(TYPE_CHARDEV_SOCKET)); 394*267f6646SMarc-André Lureau if (!chr || qemu_chr_add_client(chr, sv[0]) == -1) { 395*267f6646SMarc-André Lureau error_setg(errp, "Failed to make socket chardev"); 396*267f6646SMarc-André Lureau goto err; 397*267f6646SMarc-André Lureau } 398*267f6646SMarc-André Lureau if (!qemu_chr_fe_init(&g->vhost_chr, chr, errp)) { 399*267f6646SMarc-André Lureau goto err; 400*267f6646SMarc-André Lureau } 401*267f6646SMarc-André Lureau if (vhost_user_gpu_set_socket(&g->vhost->dev, sv[1]) < 0) { 402*267f6646SMarc-André Lureau error_setg(errp, "Failed to set vhost-user-gpu socket"); 403*267f6646SMarc-André Lureau qemu_chr_fe_deinit(&g->vhost_chr, false); 404*267f6646SMarc-André Lureau goto err; 405*267f6646SMarc-André Lureau } 406*267f6646SMarc-André Lureau 407*267f6646SMarc-André Lureau g->vhost_gpu_fd = sv[0]; 408*267f6646SMarc-André Lureau vhost_user_gpu_update_blocked(g, false); 409*267f6646SMarc-André Lureau close(sv[1]); 410*267f6646SMarc-André Lureau return true; 411*267f6646SMarc-André Lureau 412*267f6646SMarc-André Lureau err: 413*267f6646SMarc-André Lureau close(sv[0]); 414*267f6646SMarc-André Lureau close(sv[1]); 415*267f6646SMarc-André Lureau if (chr) { 416*267f6646SMarc-André Lureau object_unref(OBJECT(chr)); 417*267f6646SMarc-André Lureau } 418*267f6646SMarc-André Lureau return false; 419*267f6646SMarc-André Lureau } 420*267f6646SMarc-André Lureau 421*267f6646SMarc-André Lureau static void 422*267f6646SMarc-André Lureau vhost_user_gpu_get_config(VirtIODevice *vdev, uint8_t *config_data) 423*267f6646SMarc-André Lureau { 424*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 425*267f6646SMarc-André Lureau VirtIOGPUBase *b = VIRTIO_GPU_BASE(vdev); 426*267f6646SMarc-André Lureau struct virtio_gpu_config *vgconfig = 427*267f6646SMarc-André Lureau (struct virtio_gpu_config *)config_data; 428*267f6646SMarc-André Lureau int ret; 429*267f6646SMarc-André Lureau 430*267f6646SMarc-André Lureau memset(config_data, 0, sizeof(struct virtio_gpu_config)); 431*267f6646SMarc-André Lureau 432*267f6646SMarc-André Lureau ret = vhost_dev_get_config(&g->vhost->dev, 433*267f6646SMarc-André Lureau config_data, sizeof(struct virtio_gpu_config)); 434*267f6646SMarc-André Lureau if (ret) { 435*267f6646SMarc-André Lureau error_report("vhost-user-gpu: get device config space failed"); 436*267f6646SMarc-André Lureau return; 437*267f6646SMarc-André Lureau } 438*267f6646SMarc-André Lureau 439*267f6646SMarc-André Lureau /* those fields are managed by qemu */ 440*267f6646SMarc-André Lureau vgconfig->num_scanouts = b->virtio_config.num_scanouts; 441*267f6646SMarc-André Lureau vgconfig->events_read = b->virtio_config.events_read; 442*267f6646SMarc-André Lureau vgconfig->events_clear = b->virtio_config.events_clear; 443*267f6646SMarc-André Lureau } 444*267f6646SMarc-André Lureau 445*267f6646SMarc-André Lureau static void 446*267f6646SMarc-André Lureau vhost_user_gpu_set_config(VirtIODevice *vdev, 447*267f6646SMarc-André Lureau const uint8_t *config_data) 448*267f6646SMarc-André Lureau { 449*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 450*267f6646SMarc-André Lureau VirtIOGPUBase *b = VIRTIO_GPU_BASE(vdev); 451*267f6646SMarc-André Lureau const struct virtio_gpu_config *vgconfig = 452*267f6646SMarc-André Lureau (const struct virtio_gpu_config *)config_data; 453*267f6646SMarc-André Lureau int ret; 454*267f6646SMarc-André Lureau 455*267f6646SMarc-André Lureau if (vgconfig->events_clear) { 456*267f6646SMarc-André Lureau b->virtio_config.events_read &= ~vgconfig->events_clear; 457*267f6646SMarc-André Lureau } 458*267f6646SMarc-André Lureau 459*267f6646SMarc-André Lureau ret = vhost_dev_set_config(&g->vhost->dev, config_data, 460*267f6646SMarc-André Lureau 0, sizeof(struct virtio_gpu_config), 461*267f6646SMarc-André Lureau VHOST_SET_CONFIG_TYPE_MASTER); 462*267f6646SMarc-André Lureau if (ret) { 463*267f6646SMarc-André Lureau error_report("vhost-user-gpu: set device config space failed"); 464*267f6646SMarc-André Lureau return; 465*267f6646SMarc-André Lureau } 466*267f6646SMarc-André Lureau } 467*267f6646SMarc-André Lureau 468*267f6646SMarc-André Lureau static void 469*267f6646SMarc-André Lureau vhost_user_gpu_set_status(VirtIODevice *vdev, uint8_t val) 470*267f6646SMarc-André Lureau { 471*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 472*267f6646SMarc-André Lureau Error *err = NULL; 473*267f6646SMarc-André Lureau 474*267f6646SMarc-André Lureau if (val & VIRTIO_CONFIG_S_DRIVER_OK && vdev->vm_running) { 475*267f6646SMarc-André Lureau if (!vhost_user_gpu_do_set_socket(g, &err)) { 476*267f6646SMarc-André Lureau error_report_err(err); 477*267f6646SMarc-André Lureau return; 478*267f6646SMarc-André Lureau } 479*267f6646SMarc-André Lureau vhost_user_backend_start(g->vhost); 480*267f6646SMarc-André Lureau } else { 481*267f6646SMarc-André Lureau /* unblock any wait and stop processing */ 482*267f6646SMarc-André Lureau if (g->vhost_gpu_fd != -1) { 483*267f6646SMarc-André Lureau vhost_user_gpu_update_blocked(g, true); 484*267f6646SMarc-André Lureau qemu_chr_fe_deinit(&g->vhost_chr, true); 485*267f6646SMarc-André Lureau g->vhost_gpu_fd = -1; 486*267f6646SMarc-André Lureau } 487*267f6646SMarc-André Lureau vhost_user_backend_stop(g->vhost); 488*267f6646SMarc-André Lureau } 489*267f6646SMarc-André Lureau } 490*267f6646SMarc-André Lureau 491*267f6646SMarc-André Lureau static bool 492*267f6646SMarc-André Lureau vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx) 493*267f6646SMarc-André Lureau { 494*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 495*267f6646SMarc-André Lureau 496*267f6646SMarc-André Lureau return vhost_virtqueue_pending(&g->vhost->dev, idx); 497*267f6646SMarc-André Lureau } 498*267f6646SMarc-André Lureau 499*267f6646SMarc-André Lureau static void 500*267f6646SMarc-André Lureau vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask) 501*267f6646SMarc-André Lureau { 502*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 503*267f6646SMarc-André Lureau 504*267f6646SMarc-André Lureau vhost_virtqueue_mask(&g->vhost->dev, vdev, idx, mask); 505*267f6646SMarc-André Lureau } 506*267f6646SMarc-André Lureau 507*267f6646SMarc-André Lureau static void 508*267f6646SMarc-André Lureau vhost_user_gpu_instance_init(Object *obj) 509*267f6646SMarc-André Lureau { 510*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(obj); 511*267f6646SMarc-André Lureau 512*267f6646SMarc-André Lureau g->vhost = VHOST_USER_BACKEND(object_new(TYPE_VHOST_USER_BACKEND)); 513*267f6646SMarc-André Lureau object_property_add_alias(obj, "chardev", 514*267f6646SMarc-André Lureau OBJECT(g->vhost), "chardev", &error_abort); 515*267f6646SMarc-André Lureau } 516*267f6646SMarc-André Lureau 517*267f6646SMarc-André Lureau static void 518*267f6646SMarc-André Lureau vhost_user_gpu_instance_finalize(Object *obj) 519*267f6646SMarc-André Lureau { 520*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(obj); 521*267f6646SMarc-André Lureau 522*267f6646SMarc-André Lureau object_unref(OBJECT(g->vhost)); 523*267f6646SMarc-André Lureau } 524*267f6646SMarc-André Lureau 525*267f6646SMarc-André Lureau static void 526*267f6646SMarc-André Lureau vhost_user_gpu_reset(VirtIODevice *vdev) 527*267f6646SMarc-André Lureau { 528*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(vdev); 529*267f6646SMarc-André Lureau 530*267f6646SMarc-André Lureau virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev)); 531*267f6646SMarc-André Lureau 532*267f6646SMarc-André Lureau vhost_user_backend_stop(g->vhost); 533*267f6646SMarc-André Lureau } 534*267f6646SMarc-André Lureau 535*267f6646SMarc-André Lureau static int 536*267f6646SMarc-André Lureau vhost_user_gpu_config_change(struct vhost_dev *dev) 537*267f6646SMarc-André Lureau { 538*267f6646SMarc-André Lureau error_report("vhost-user-gpu: unhandled backend config change"); 539*267f6646SMarc-André Lureau return -1; 540*267f6646SMarc-André Lureau } 541*267f6646SMarc-André Lureau 542*267f6646SMarc-André Lureau static const VhostDevConfigOps config_ops = { 543*267f6646SMarc-André Lureau .vhost_dev_config_notifier = vhost_user_gpu_config_change, 544*267f6646SMarc-André Lureau }; 545*267f6646SMarc-André Lureau 546*267f6646SMarc-André Lureau static void 547*267f6646SMarc-André Lureau vhost_user_gpu_device_realize(DeviceState *qdev, Error **errp) 548*267f6646SMarc-André Lureau { 549*267f6646SMarc-André Lureau VhostUserGPU *g = VHOST_USER_GPU(qdev); 550*267f6646SMarc-André Lureau VirtIODevice *vdev = VIRTIO_DEVICE(g); 551*267f6646SMarc-André Lureau 552*267f6646SMarc-André Lureau vhost_dev_set_config_notifier(&g->vhost->dev, &config_ops); 553*267f6646SMarc-André Lureau if (vhost_user_backend_dev_init(g->vhost, vdev, 2, errp) < 0) { 554*267f6646SMarc-André Lureau return; 555*267f6646SMarc-André Lureau } 556*267f6646SMarc-André Lureau 557*267f6646SMarc-André Lureau if (virtio_has_feature(g->vhost->dev.features, VIRTIO_GPU_F_VIRGL)) { 558*267f6646SMarc-André Lureau g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED; 559*267f6646SMarc-André Lureau } 560*267f6646SMarc-André Lureau 561*267f6646SMarc-André Lureau if (!virtio_gpu_base_device_realize(qdev, NULL, NULL, errp)) { 562*267f6646SMarc-André Lureau return; 563*267f6646SMarc-André Lureau } 564*267f6646SMarc-André Lureau 565*267f6646SMarc-André Lureau g->vhost_gpu_fd = -1; 566*267f6646SMarc-André Lureau } 567*267f6646SMarc-André Lureau 568*267f6646SMarc-André Lureau static Property vhost_user_gpu_properties[] = { 569*267f6646SMarc-André Lureau VIRTIO_GPU_BASE_PROPERTIES(VhostUserGPU, parent_obj.conf), 570*267f6646SMarc-André Lureau DEFINE_PROP_END_OF_LIST(), 571*267f6646SMarc-André Lureau }; 572*267f6646SMarc-André Lureau 573*267f6646SMarc-André Lureau static void 574*267f6646SMarc-André Lureau vhost_user_gpu_class_init(ObjectClass *klass, void *data) 575*267f6646SMarc-André Lureau { 576*267f6646SMarc-André Lureau DeviceClass *dc = DEVICE_CLASS(klass); 577*267f6646SMarc-André Lureau VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); 578*267f6646SMarc-André Lureau VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_CLASS(klass); 579*267f6646SMarc-André Lureau 580*267f6646SMarc-André Lureau vgc->gl_unblock = vhost_user_gpu_gl_unblock; 581*267f6646SMarc-André Lureau 582*267f6646SMarc-André Lureau vdc->realize = vhost_user_gpu_device_realize; 583*267f6646SMarc-André Lureau vdc->reset = vhost_user_gpu_reset; 584*267f6646SMarc-André Lureau vdc->set_status = vhost_user_gpu_set_status; 585*267f6646SMarc-André Lureau vdc->guest_notifier_mask = vhost_user_gpu_guest_notifier_mask; 586*267f6646SMarc-André Lureau vdc->guest_notifier_pending = vhost_user_gpu_guest_notifier_pending; 587*267f6646SMarc-André Lureau vdc->get_config = vhost_user_gpu_get_config; 588*267f6646SMarc-André Lureau vdc->set_config = vhost_user_gpu_set_config; 589*267f6646SMarc-André Lureau 590*267f6646SMarc-André Lureau dc->props = vhost_user_gpu_properties; 591*267f6646SMarc-André Lureau } 592*267f6646SMarc-André Lureau 593*267f6646SMarc-André Lureau static const TypeInfo vhost_user_gpu_info = { 594*267f6646SMarc-André Lureau .name = TYPE_VHOST_USER_GPU, 595*267f6646SMarc-André Lureau .parent = TYPE_VIRTIO_GPU_BASE, 596*267f6646SMarc-André Lureau .instance_size = sizeof(VhostUserGPU), 597*267f6646SMarc-André Lureau .instance_init = vhost_user_gpu_instance_init, 598*267f6646SMarc-André Lureau .instance_finalize = vhost_user_gpu_instance_finalize, 599*267f6646SMarc-André Lureau .class_init = vhost_user_gpu_class_init, 600*267f6646SMarc-André Lureau }; 601*267f6646SMarc-André Lureau 602*267f6646SMarc-André Lureau static void vhost_user_gpu_register_types(void) 603*267f6646SMarc-André Lureau { 604*267f6646SMarc-André Lureau type_register_static(&vhost_user_gpu_info); 605*267f6646SMarc-André Lureau } 606*267f6646SMarc-André Lureau 607*267f6646SMarc-André Lureau type_init(vhost_user_gpu_register_types) 608