/* * Virtio GPU Device * * Copyright Red Hat, Inc. 2013-2014 * * Authors: * Dave Airlie * Gerd Hoffmann * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #include "qemu/osdep.h" #include "qemu/units.h" #include "qemu/iov.h" #include "sysemu/cpus.h" #include "ui/console.h" #include "ui/rect.h" #include "trace.h" #include "sysemu/dma.h" #include "sysemu/sysemu.h" #include "hw/virtio/virtio.h" #include "migration/qemu-file-types.h" #include "hw/virtio/virtio-gpu.h" #include "hw/virtio/virtio-gpu-bswap.h" #include "hw/virtio/virtio-gpu-pixman.h" #include "hw/virtio/virtio-bus.h" #include "hw/qdev-properties.h" #include "qemu/log.h" #include "qemu/memfd.h" #include "qemu/module.h" #include "qapi/error.h" #include "qemu/error-report.h" #define VIRTIO_GPU_VM_VERSION 1 static struct virtio_gpu_simple_resource * virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, bool require_backing, const char *caller, uint32_t *error); static void virtio_gpu_reset_bh(void *opaque); void virtio_gpu_update_cursor_data(VirtIOGPU *g, struct virtio_gpu_scanout *s, uint32_t resource_id) { struct virtio_gpu_simple_resource *res; uint32_t pixels; void *data; res = virtio_gpu_find_check_resource(g, resource_id, false, __func__, NULL); if (!res) { return; } if (res->blob_size) { if (res->blob_size < (s->current_cursor->width * s->current_cursor->height * 4)) { return; } data = res->blob; } else { if (pixman_image_get_width(res->image) != s->current_cursor->width || pixman_image_get_height(res->image) != s->current_cursor->height) { return; } data = pixman_image_get_data(res->image); } pixels = s->current_cursor->width * s->current_cursor->height; memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t)); } static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor) { struct virtio_gpu_scanout *s; VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR; if (cursor->pos.scanout_id >= g->parent_obj.conf.max_outputs) { return; } s = &g->parent_obj.scanout[cursor->pos.scanout_id]; trace_virtio_gpu_update_cursor(cursor->pos.scanout_id, cursor->pos.x, cursor->pos.y, move ? "move" : "update", cursor->resource_id); if (!move) { if (!s->current_cursor) { s->current_cursor = cursor_alloc(64, 64); } s->current_cursor->hot_x = cursor->hot_x; s->current_cursor->hot_y = cursor->hot_y; if (cursor->resource_id > 0) { vgc->update_cursor_data(g, s, cursor->resource_id); } dpy_cursor_define(s->con, s->current_cursor); s->cursor = *cursor; } else { s->cursor.pos.x = cursor->pos.x; s->cursor.pos.y = cursor->pos.y; } dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y, cursor->resource_id); } struct virtio_gpu_simple_resource * virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id) { struct virtio_gpu_simple_resource *res; QTAILQ_FOREACH(res, &g->reslist, next) { if (res->resource_id == resource_id) { return res; } } return NULL; } static struct virtio_gpu_simple_resource * virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, bool require_backing, const char *caller, uint32_t *error) { struct virtio_gpu_simple_resource *res; res = virtio_gpu_find_resource(g, resource_id); if (!res) { qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid resource specified %d\n", caller, resource_id); if (error) { *error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; } return NULL; } if (require_backing) { if (!res->iov || (!res->image && !res->blob)) { qemu_log_mask(LOG_GUEST_ERROR, "%s: no backing storage %d\n", caller, resource_id); if (error) { *error = VIRTIO_GPU_RESP_ERR_UNSPEC; } return NULL; } } return res; } void virtio_gpu_ctrl_response(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd, struct virtio_gpu_ctrl_hdr *resp, size_t resp_len) { size_t s; if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) { resp->flags |= VIRTIO_GPU_FLAG_FENCE; resp->fence_id = cmd->cmd_hdr.fence_id; resp->ctx_id = cmd->cmd_hdr.ctx_id; } virtio_gpu_ctrl_hdr_bswap(resp); s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len); if (s != resp_len) { qemu_log_mask(LOG_GUEST_ERROR, "%s: response size incorrect %zu vs %zu\n", __func__, s, resp_len); } virtqueue_push(cmd->vq, &cmd->elem, s); virtio_notify(VIRTIO_DEVICE(g), cmd->vq); cmd->finished = true; } void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd, enum virtio_gpu_ctrl_type type) { struct virtio_gpu_ctrl_hdr resp; memset(&resp, 0, sizeof(resp)); resp.type = type; virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp)); } void virtio_gpu_get_display_info(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_resp_display_info display_info; trace_virtio_gpu_cmd_get_display_info(); memset(&display_info, 0, sizeof(display_info)); display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO; virtio_gpu_base_fill_display_info(VIRTIO_GPU_BASE(g), &display_info); virtio_gpu_ctrl_response(g, cmd, &display_info.hdr, sizeof(display_info)); } void virtio_gpu_get_edid(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_resp_edid edid; struct virtio_gpu_cmd_get_edid get_edid; VirtIOGPUBase *b = VIRTIO_GPU_BASE(g); VIRTIO_GPU_FILL_CMD(get_edid); virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); if (get_edid.scanout >= b->conf.max_outputs) { cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } trace_virtio_gpu_cmd_get_edid(get_edid.scanout); memset(&edid, 0, sizeof(edid)); edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID; virtio_gpu_base_generate_edid(VIRTIO_GPU_BASE(g), get_edid.scanout, &edid); virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid)); } static uint32_t calc_image_hostmem(pixman_format_code_t pformat, uint32_t width, uint32_t height) { /* Copied from pixman/pixman-bits-image.c, skip integer overflow check. * pixman_image_create_bits will fail in case it overflow. */ int bpp = PIXMAN_FORMAT_BPP(pformat); int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t); return height * stride; } static void virtio_gpu_resource_create_2d(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { pixman_format_code_t pformat; struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_create_2d c2d; VIRTIO_GPU_FILL_CMD(c2d); virtio_gpu_bswap_32(&c2d, sizeof(c2d)); trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format, c2d.width, c2d.height); if (c2d.resource_id == 0) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", __func__); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } res = virtio_gpu_find_resource(g, c2d.resource_id); if (res) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", __func__, c2d.resource_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } res = g_new0(struct virtio_gpu_simple_resource, 1); res->width = c2d.width; res->height = c2d.height; res->format = c2d.format; res->resource_id = c2d.resource_id; pformat = virtio_gpu_get_pixman_format(c2d.format); if (!pformat) { qemu_log_mask(LOG_GUEST_ERROR, "%s: host couldn't handle guest format %d\n", __func__, c2d.format); g_free(res); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height); if (res->hostmem + g->hostmem < g->conf_max_hostmem) { if (!qemu_pixman_image_new_shareable( &res->image, &res->share_handle, "virtio-gpu res", pformat, c2d.width, c2d.height, c2d.height ? res->hostmem / c2d.height : 0, &error_warn)) { goto end; } } end: if (!res->image) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource creation failed %d %d %d\n", __func__, c2d.resource_id, c2d.width, c2d.height); g_free(res); cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; return; } QTAILQ_INSERT_HEAD(&g->reslist, res, next); g->hostmem += res->hostmem; } static void virtio_gpu_resource_create_blob(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_create_blob cblob; int ret; VIRTIO_GPU_FILL_CMD(cblob); virtio_gpu_create_blob_bswap(&cblob); trace_virtio_gpu_cmd_res_create_blob(cblob.resource_id, cblob.size); if (cblob.resource_id == 0) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", __func__); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST && cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) { qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n", __func__); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } if (virtio_gpu_find_resource(g, cblob.resource_id)) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", __func__, cblob.resource_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } res = g_new0(struct virtio_gpu_simple_resource, 1); res->resource_id = cblob.resource_id; res->blob_size = cblob.size; ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob), cmd, &res->addrs, &res->iov, &res->iov_cnt); if (ret != 0) { cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; g_free(res); return; } virtio_gpu_init_udmabuf(res); QTAILQ_INSERT_HEAD(&g->reslist, res, next); } void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) { struct virtio_gpu_scanout *scanout = &g->parent_obj.scanout[scanout_id]; struct virtio_gpu_simple_resource *res; if (scanout->resource_id == 0) { return; } res = virtio_gpu_find_resource(g, scanout->resource_id); if (res) { res->scanout_bitmask &= ~(1 << scanout_id); } dpy_gfx_replace_surface(scanout->con, NULL); scanout->resource_id = 0; scanout->ds = NULL; scanout->width = 0; scanout->height = 0; } static void virtio_gpu_resource_destroy(VirtIOGPU *g, struct virtio_gpu_simple_resource *res, Error **errp) { int i; if (res->scanout_bitmask) { for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { if (res->scanout_bitmask & (1 << i)) { virtio_gpu_disable_scanout(g, i); } } } qemu_pixman_image_unref(res->image); virtio_gpu_cleanup_mapping(g, res); QTAILQ_REMOVE(&g->reslist, res, next); g->hostmem -= res->hostmem; g_free(res); } static void virtio_gpu_resource_unref(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_unref unref; VIRTIO_GPU_FILL_CMD(unref); virtio_gpu_bswap_32(&unref, sizeof(unref)); trace_virtio_gpu_cmd_res_unref(unref.resource_id); res = virtio_gpu_find_resource(g, unref.resource_id); if (!res) { qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", __func__, unref.resource_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } /* * virtio_gpu_resource_destroy does not set any errors, so pass a NULL errp * to ignore them. */ virtio_gpu_resource_destroy(g, res, NULL); } static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; int h, bpp; uint32_t src_offset, dst_offset, stride; pixman_format_code_t format; struct virtio_gpu_transfer_to_host_2d t2d; void *img_data; VIRTIO_GPU_FILL_CMD(t2d); virtio_gpu_t2d_bswap(&t2d); trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); res = virtio_gpu_find_check_resource(g, t2d.resource_id, true, __func__, &cmd->error); if (!res || res->blob) { return; } if (t2d.r.x > res->width || t2d.r.y > res->height || t2d.r.width > res->width || t2d.r.height > res->height || t2d.r.x + t2d.r.width > res->width || t2d.r.y + t2d.r.height > res->height) { qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource" " bounds for resource %d: %d %d %d %d vs %d %d\n", __func__, t2d.resource_id, t2d.r.x, t2d.r.y, t2d.r.width, t2d.r.height, res->width, res->height); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } format = pixman_image_get_format(res->image); bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); stride = pixman_image_get_stride(res->image); img_data = pixman_image_get_data(res->image); if (t2d.r.x || t2d.r.width != pixman_image_get_width(res->image)) { for (h = 0; h < t2d.r.height; h++) { src_offset = t2d.offset + stride * h; dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); iov_to_buf(res->iov, res->iov_cnt, src_offset, (uint8_t *)img_data + dst_offset, t2d.r.width * bpp); } } else { src_offset = t2d.offset; dst_offset = t2d.r.y * stride + t2d.r.x * bpp; iov_to_buf(res->iov, res->iov_cnt, src_offset, (uint8_t *)img_data + dst_offset, stride * t2d.r.height); } } static void virtio_gpu_resource_flush(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_flush rf; struct virtio_gpu_scanout *scanout; QemuRect flush_rect; bool within_bounds = false; bool update_submitted = false; int i; VIRTIO_GPU_FILL_CMD(rf); virtio_gpu_bswap_32(&rf, sizeof(rf)); trace_virtio_gpu_cmd_res_flush(rf.resource_id, rf.r.width, rf.r.height, rf.r.x, rf.r.y); res = virtio_gpu_find_check_resource(g, rf.resource_id, false, __func__, &cmd->error); if (!res) { return; } if (res->blob) { for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { scanout = &g->parent_obj.scanout[i]; if (scanout->resource_id == res->resource_id && rf.r.x < scanout->x + scanout->width && rf.r.x + rf.r.width >= scanout->x && rf.r.y < scanout->y + scanout->height && rf.r.y + rf.r.height >= scanout->y) { within_bounds = true; if (console_has_gl(scanout->con)) { dpy_gl_update(scanout->con, 0, 0, scanout->width, scanout->height); update_submitted = true; } } } if (update_submitted) { return; } if (!within_bounds) { qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside scanouts" " bounds for flush %d: %d %d %d %d\n", __func__, rf.resource_id, rf.r.x, rf.r.y, rf.r.width, rf.r.height); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } } if (!res->blob && (rf.r.x > res->width || rf.r.y > res->height || rf.r.width > res->width || rf.r.height > res->height || rf.r.x + rf.r.width > res->width || rf.r.y + rf.r.height > res->height)) { qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource" " bounds for resource %d: %d %d %d %d vs %d %d\n", __func__, rf.resource_id, rf.r.x, rf.r.y, rf.r.width, rf.r.height, res->width, res->height); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } qemu_rect_init(&flush_rect, rf.r.x, rf.r.y, rf.r.width, rf.r.height); for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { QemuRect rect; if (!(res->scanout_bitmask & (1 << i))) { continue; } scanout = &g->parent_obj.scanout[i]; qemu_rect_init(&rect, scanout->x, scanout->y, scanout->width, scanout->height); /* work out the area we need to update for each console */ if (qemu_rect_intersect(&flush_rect, &rect, &rect)) { qemu_rect_translate(&rect, -scanout->x, -scanout->y); dpy_gfx_update(g->parent_obj.scanout[i].con, rect.x, rect.y, rect.width, rect.height); } } } static void virtio_unref_resource(pixman_image_t *image, void *data) { pixman_image_unref(data); } void virtio_gpu_update_scanout(VirtIOGPU *g, uint32_t scanout_id, struct virtio_gpu_simple_resource *res, struct virtio_gpu_framebuffer *fb, struct virtio_gpu_rect *r) { struct virtio_gpu_simple_resource *ores; struct virtio_gpu_scanout *scanout; scanout = &g->parent_obj.scanout[scanout_id]; ores = virtio_gpu_find_resource(g, scanout->resource_id); if (ores) { ores->scanout_bitmask &= ~(1 << scanout_id); } res->scanout_bitmask |= (1 << scanout_id); scanout->resource_id = res->resource_id; scanout->x = r->x; scanout->y = r->y; scanout->width = r->width; scanout->height = r->height; scanout->fb = *fb; } static bool virtio_gpu_do_set_scanout(VirtIOGPU *g, uint32_t scanout_id, struct virtio_gpu_framebuffer *fb, struct virtio_gpu_simple_resource *res, struct virtio_gpu_rect *r, uint32_t *error) { struct virtio_gpu_scanout *scanout; uint8_t *data; scanout = &g->parent_obj.scanout[scanout_id]; if (r->x > fb->width || r->y > fb->height || r->width < 16 || r->height < 16 || r->width > fb->width || r->height > fb->height || r->x + r->width > fb->width || r->y + r->height > fb->height) { qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for" " resource %d, rect (%d,%d)+%d,%d, fb %d %d\n", __func__, scanout_id, res->resource_id, r->x, r->y, r->width, r->height, fb->width, fb->height); *error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return false; } g->parent_obj.enable = 1; if (res->blob) { if (console_has_gl(scanout->con)) { if (!virtio_gpu_update_dmabuf(g, scanout_id, res, fb, r)) { virtio_gpu_update_scanout(g, scanout_id, res, fb, r); } else { *error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; return false; } return true; } data = res->blob; } else { data = (uint8_t *)pixman_image_get_data(res->image); } /* create a surface for this scanout */ if ((res->blob && !console_has_gl(scanout->con)) || !scanout->ds || surface_data(scanout->ds) != data + fb->offset || scanout->width != r->width || scanout->height != r->height) { pixman_image_t *rect; void *ptr = data + fb->offset; rect = pixman_image_create_bits(fb->format, r->width, r->height, ptr, fb->stride); if (res->image) { pixman_image_ref(res->image); pixman_image_set_destroy_function(rect, virtio_unref_resource, res->image); } /* realloc the surface ptr */ scanout->ds = qemu_create_displaysurface_pixman(rect); qemu_displaysurface_set_share_handle(scanout->ds, res->share_handle, fb->offset); pixman_image_unref(rect); dpy_gfx_replace_surface(g->parent_obj.scanout[scanout_id].con, scanout->ds); } virtio_gpu_update_scanout(g, scanout_id, res, fb, r); return true; } static void virtio_gpu_set_scanout(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_framebuffer fb = { 0 }; struct virtio_gpu_set_scanout ss; VIRTIO_GPU_FILL_CMD(ss); virtio_gpu_bswap_32(&ss, sizeof(ss)); trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id, ss.r.width, ss.r.height, ss.r.x, ss.r.y); if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", __func__, ss.scanout_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; return; } if (ss.resource_id == 0) { virtio_gpu_disable_scanout(g, ss.scanout_id); return; } res = virtio_gpu_find_check_resource(g, ss.resource_id, true, __func__, &cmd->error); if (!res) { return; } fb.format = pixman_image_get_format(res->image); fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); fb.width = pixman_image_get_width(res->image); fb.height = pixman_image_get_height(res->image); fb.stride = pixman_image_get_stride(res->image); fb.offset = ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; virtio_gpu_do_set_scanout(g, ss.scanout_id, &fb, res, &ss.r, &cmd->error); } bool virtio_gpu_scanout_blob_to_fb(struct virtio_gpu_framebuffer *fb, struct virtio_gpu_set_scanout_blob *ss, uint64_t blob_size) { uint64_t fbend; fb->format = virtio_gpu_get_pixman_format(ss->format); if (!fb->format) { qemu_log_mask(LOG_GUEST_ERROR, "%s: host couldn't handle guest format %d\n", __func__, ss->format); return false; } fb->bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb->format), 8); fb->width = ss->width; fb->height = ss->height; fb->stride = ss->strides[0]; fb->offset = ss->offsets[0] + ss->r.x * fb->bytes_pp + ss->r.y * fb->stride; fbend = fb->offset; fbend += (uint64_t) fb->stride * ss->r.height; if (fbend > blob_size) { qemu_log_mask(LOG_GUEST_ERROR, "%s: fb end out of range\n", __func__); return false; } return true; } static void virtio_gpu_set_scanout_blob(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_framebuffer fb = { 0 }; struct virtio_gpu_set_scanout_blob ss; VIRTIO_GPU_FILL_CMD(ss); virtio_gpu_scanout_blob_bswap(&ss); trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id, ss.r.width, ss.r.height, ss.r.x, ss.r.y); if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", __func__, ss.scanout_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; return; } if (ss.resource_id == 0) { virtio_gpu_disable_scanout(g, ss.scanout_id); return; } res = virtio_gpu_find_check_resource(g, ss.resource_id, true, __func__, &cmd->error); if (!res) { return; } if (!virtio_gpu_scanout_blob_to_fb(&fb, &ss, res->blob_size)) { cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; return; } virtio_gpu_do_set_scanout(g, ss.scanout_id, &fb, res, &ss.r, &cmd->error); } int virtio_gpu_create_mapping_iov(VirtIOGPU *g, uint32_t nr_entries, uint32_t offset, struct virtio_gpu_ctrl_command *cmd, uint64_t **addr, struct iovec **iov, uint32_t *niov) { struct virtio_gpu_mem_entry *ents; size_t esize, s; int e, v; if (nr_entries > 16384) { qemu_log_mask(LOG_GUEST_ERROR, "%s: nr_entries is too big (%d > 16384)\n", __func__, nr_entries); return -1; } esize = sizeof(*ents) * nr_entries; ents = g_malloc(esize); s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, offset, ents, esize); if (s != esize) { qemu_log_mask(LOG_GUEST_ERROR, "%s: command data size incorrect %zu vs %zu\n", __func__, s, esize); g_free(ents); return -1; } *iov = NULL; if (addr) { *addr = NULL; } for (e = 0, v = 0; e < nr_entries; e++) { uint64_t a = le64_to_cpu(ents[e].addr); uint32_t l = le32_to_cpu(ents[e].length); hwaddr len; void *map; do { len = l; map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, a, &len, DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED); if (!map) { qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" " element %d\n", __func__, e); virtio_gpu_cleanup_mapping_iov(g, *iov, v); g_free(ents); *iov = NULL; if (addr) { g_free(*addr); *addr = NULL; } return -1; } if (!(v % 16)) { *iov = g_renew(struct iovec, *iov, v + 16); if (addr) { *addr = g_renew(uint64_t, *addr, v + 16); } } (*iov)[v].iov_base = map; (*iov)[v].iov_len = len; if (addr) { (*addr)[v] = a; } a += len; l -= len; v += 1; } while (l > 0); } *niov = v; g_free(ents); return 0; } void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g, struct iovec *iov, uint32_t count) { int i; for (i = 0; i < count; i++) { dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, iov[i].iov_base, iov[i].iov_len, DMA_DIRECTION_TO_DEVICE, iov[i].iov_len); } g_free(iov); } void virtio_gpu_cleanup_mapping(VirtIOGPU *g, struct virtio_gpu_simple_resource *res) { virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt); res->iov = NULL; res->iov_cnt = 0; g_free(res->addrs); res->addrs = NULL; if (res->blob) { virtio_gpu_fini_udmabuf(res); } } static void virtio_gpu_resource_attach_backing(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_attach_backing ab; int ret; VIRTIO_GPU_FILL_CMD(ab); virtio_gpu_bswap_32(&ab, sizeof(ab)); trace_virtio_gpu_cmd_res_back_attach(ab.resource_id); res = virtio_gpu_find_resource(g, ab.resource_id); if (!res) { qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", __func__, ab.resource_id); cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } if (res->iov) { cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; return; } ret = virtio_gpu_create_mapping_iov(g, ab.nr_entries, sizeof(ab), cmd, &res->addrs, &res->iov, &res->iov_cnt); if (ret != 0) { cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; return; } } static void virtio_gpu_resource_detach_backing(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { struct virtio_gpu_simple_resource *res; struct virtio_gpu_resource_detach_backing detach; VIRTIO_GPU_FILL_CMD(detach); virtio_gpu_bswap_32(&detach, sizeof(detach)); trace_virtio_gpu_cmd_res_back_detach(detach.resource_id); res = virtio_gpu_find_check_resource(g, detach.resource_id, true, __func__, &cmd->error); if (!res) { return; } virtio_gpu_cleanup_mapping(g, res); } void virtio_gpu_simple_process_cmd(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr); virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr); switch (cmd->cmd_hdr.type) { case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: virtio_gpu_get_display_info(g, cmd); break; case VIRTIO_GPU_CMD_GET_EDID: virtio_gpu_get_edid(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: virtio_gpu_resource_create_2d(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB: if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; break; } virtio_gpu_resource_create_blob(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_UNREF: virtio_gpu_resource_unref(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_FLUSH: virtio_gpu_resource_flush(g, cmd); break; case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: virtio_gpu_transfer_to_host_2d(g, cmd); break; case VIRTIO_GPU_CMD_SET_SCANOUT: virtio_gpu_set_scanout(g, cmd); break; case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB: if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; break; } virtio_gpu_set_scanout_blob(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: virtio_gpu_resource_attach_backing(g, cmd); break; case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: virtio_gpu_resource_detach_backing(g, cmd); break; default: cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; break; } if (!cmd->finished) { if (!g->parent_obj.renderer_blocked) { virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error : VIRTIO_GPU_RESP_OK_NODATA); } } } static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq) { VirtIOGPU *g = VIRTIO_GPU(vdev); qemu_bh_schedule(g->ctrl_bh); } static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq) { VirtIOGPU *g = VIRTIO_GPU(vdev); qemu_bh_schedule(g->cursor_bh); } void virtio_gpu_process_cmdq(VirtIOGPU *g) { struct virtio_gpu_ctrl_command *cmd; VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); if (g->processing_cmdq) { return; } g->processing_cmdq = true; while (!QTAILQ_EMPTY(&g->cmdq)) { cmd = QTAILQ_FIRST(&g->cmdq); if (g->parent_obj.renderer_blocked) { break; } /* process command */ vgc->process_cmd(g, cmd); /* command suspended */ if (!cmd->finished && !(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) { trace_virtio_gpu_cmd_suspended(cmd->cmd_hdr.type); break; } QTAILQ_REMOVE(&g->cmdq, cmd, next); if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { g->stats.requests++; } if (!cmd->finished) { QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next); g->inflight++; if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { if (g->stats.max_inflight < g->inflight) { g->stats.max_inflight = g->inflight; } trace_virtio_gpu_inc_inflight_fences(g->inflight); } } else { g_free(cmd); } } g->processing_cmdq = false; } static void virtio_gpu_process_fenceq(VirtIOGPU *g) { struct virtio_gpu_ctrl_command *cmd, *tmp; QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) { trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id); virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA); QTAILQ_REMOVE(&g->fenceq, cmd, next); g_free(cmd); g->inflight--; if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { trace_virtio_gpu_dec_inflight_fences(g->inflight); } } } static void virtio_gpu_handle_gl_flushed(VirtIOGPUBase *b) { VirtIOGPU *g = container_of(b, VirtIOGPU, parent_obj); virtio_gpu_process_fenceq(g); virtio_gpu_process_cmdq(g); } static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) { VirtIOGPU *g = VIRTIO_GPU(vdev); struct virtio_gpu_ctrl_command *cmd; if (!virtio_queue_ready(vq)) { return; } cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); while (cmd) { cmd->vq = vq; cmd->error = 0; cmd->finished = false; QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next); cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); } virtio_gpu_process_cmdq(g); } static void virtio_gpu_ctrl_bh(void *opaque) { VirtIOGPU *g = opaque; VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); vgc->handle_ctrl(VIRTIO_DEVICE(g), g->ctrl_vq); } static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq) { VirtIOGPU *g = VIRTIO_GPU(vdev); VirtQueueElement *elem; size_t s; struct virtio_gpu_update_cursor cursor_info; if (!virtio_queue_ready(vq)) { return; } for (;;) { elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); if (!elem) { break; } s = iov_to_buf(elem->out_sg, elem->out_num, 0, &cursor_info, sizeof(cursor_info)); if (s != sizeof(cursor_info)) { qemu_log_mask(LOG_GUEST_ERROR, "%s: cursor size incorrect %zu vs %zu\n", __func__, s, sizeof(cursor_info)); } else { virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info)); update_cursor(g, &cursor_info); } virtqueue_push(vq, elem, 0); virtio_notify(vdev, vq); g_free(elem); } } static void virtio_gpu_cursor_bh(void *opaque) { VirtIOGPU *g = opaque; virtio_gpu_handle_cursor(&g->parent_obj.parent_obj, g->cursor_vq); } static bool scanout_vmstate_after_v2(void *opaque, int version) { struct VirtIOGPUBase *base = container_of(opaque, VirtIOGPUBase, scanout); struct VirtIOGPU *gpu = container_of(base, VirtIOGPU, parent_obj); return gpu->scanout_vmstate_version >= 2; } static const VMStateDescription vmstate_virtio_gpu_scanout = { .name = "virtio-gpu-one-scanout", .version_id = 1, .fields = (const VMStateField[]) { VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout), VMSTATE_UINT32(width, struct virtio_gpu_scanout), VMSTATE_UINT32(height, struct virtio_gpu_scanout), VMSTATE_INT32(x, struct virtio_gpu_scanout), VMSTATE_INT32(y, struct virtio_gpu_scanout), VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout), VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout), VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout), VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout), VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout), VMSTATE_UINT32_TEST(fb.format, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_UINT32_TEST(fb.bytes_pp, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_UINT32_TEST(fb.width, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_UINT32_TEST(fb.height, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_UINT32_TEST(fb.stride, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_UINT32_TEST(fb.offset, struct virtio_gpu_scanout, scanout_vmstate_after_v2), VMSTATE_END_OF_LIST() }, }; static const VMStateDescription vmstate_virtio_gpu_scanouts = { .name = "virtio-gpu-scanouts", .version_id = 1, .fields = (const VMStateField[]) { VMSTATE_INT32(parent_obj.enable, struct VirtIOGPU), VMSTATE_UINT32_EQUAL(parent_obj.conf.max_outputs, struct VirtIOGPU, NULL), VMSTATE_STRUCT_VARRAY_UINT32(parent_obj.scanout, struct VirtIOGPU, parent_obj.conf.max_outputs, 1, vmstate_virtio_gpu_scanout, struct virtio_gpu_scanout), VMSTATE_END_OF_LIST() }, }; static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size, const VMStateField *field, JSONWriter *vmdesc) { VirtIOGPU *g = opaque; struct virtio_gpu_simple_resource *res; int i; /* in 2d mode we should never find unprocessed commands here */ assert(QTAILQ_EMPTY(&g->cmdq)); QTAILQ_FOREACH(res, &g->reslist, next) { if (res->blob_size) { continue; } qemu_put_be32(f, res->resource_id); qemu_put_be32(f, res->width); qemu_put_be32(f, res->height); qemu_put_be32(f, res->format); qemu_put_be32(f, res->iov_cnt); for (i = 0; i < res->iov_cnt; i++) { qemu_put_be64(f, res->addrs[i]); qemu_put_be32(f, res->iov[i].iov_len); } qemu_put_buffer(f, (void *)pixman_image_get_data(res->image), pixman_image_get_stride(res->image) * res->height); } qemu_put_be32(f, 0); /* end of list */ return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL); } static bool virtio_gpu_load_restore_mapping(VirtIOGPU *g, struct virtio_gpu_simple_resource *res) { int i; for (i = 0; i < res->iov_cnt; i++) { hwaddr len = res->iov[i].iov_len; res->iov[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED); if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { /* Clean up the half-a-mapping we just created... */ if (res->iov[i].iov_base) { dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, res->iov[i].iov_base, len, DMA_DIRECTION_TO_DEVICE, 0); } /* ...and the mappings for previous loop iterations */ res->iov_cnt = i; virtio_gpu_cleanup_mapping(g, res); return false; } } QTAILQ_INSERT_HEAD(&g->reslist, res, next); g->hostmem += res->hostmem; return true; } static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, const VMStateField *field) { VirtIOGPU *g = opaque; struct virtio_gpu_simple_resource *res; uint32_t resource_id, pformat; int i; g->hostmem = 0; resource_id = qemu_get_be32(f); while (resource_id != 0) { res = virtio_gpu_find_resource(g, resource_id); if (res) { return -EINVAL; } res = g_new0(struct virtio_gpu_simple_resource, 1); res->resource_id = resource_id; res->width = qemu_get_be32(f); res->height = qemu_get_be32(f); res->format = qemu_get_be32(f); res->iov_cnt = qemu_get_be32(f); /* allocate */ pformat = virtio_gpu_get_pixman_format(res->format); if (!pformat) { g_free(res); return -EINVAL; } res->hostmem = calc_image_hostmem(pformat, res->width, res->height); if (!qemu_pixman_image_new_shareable(&res->image, &res->share_handle, "virtio-gpu res", pformat, res->width, res->height, res->height ? res->hostmem / res->height : 0, &error_warn)) { g_free(res); return -EINVAL; } res->addrs = g_new(uint64_t, res->iov_cnt); res->iov = g_new(struct iovec, res->iov_cnt); /* read data */ for (i = 0; i < res->iov_cnt; i++) { res->addrs[i] = qemu_get_be64(f); res->iov[i].iov_len = qemu_get_be32(f); } qemu_get_buffer(f, (void *)pixman_image_get_data(res->image), pixman_image_get_stride(res->image) * res->height); if (!virtio_gpu_load_restore_mapping(g, res)) { pixman_image_unref(res->image); g_free(res); return -EINVAL; } resource_id = qemu_get_be32(f); } /* load & apply scanout state */ vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); return 0; } static int virtio_gpu_blob_save(QEMUFile *f, void *opaque, size_t size, const VMStateField *field, JSONWriter *vmdesc) { VirtIOGPU *g = opaque; struct virtio_gpu_simple_resource *res; int i; /* in 2d mode we should never find unprocessed commands here */ assert(QTAILQ_EMPTY(&g->cmdq)); QTAILQ_FOREACH(res, &g->reslist, next) { if (!res->blob_size) { continue; } assert(!res->image); qemu_put_be32(f, res->resource_id); qemu_put_be32(f, res->blob_size); qemu_put_be32(f, res->iov_cnt); for (i = 0; i < res->iov_cnt; i++) { qemu_put_be64(f, res->addrs[i]); qemu_put_be32(f, res->iov[i].iov_len); } } qemu_put_be32(f, 0); /* end of list */ return 0; } static int virtio_gpu_blob_load(QEMUFile *f, void *opaque, size_t size, const VMStateField *field) { VirtIOGPU *g = opaque; struct virtio_gpu_simple_resource *res; uint32_t resource_id; int i; resource_id = qemu_get_be32(f); while (resource_id != 0) { res = virtio_gpu_find_resource(g, resource_id); if (res) { return -EINVAL; } res = g_new0(struct virtio_gpu_simple_resource, 1); res->resource_id = resource_id; res->blob_size = qemu_get_be32(f); res->iov_cnt = qemu_get_be32(f); res->addrs = g_new(uint64_t, res->iov_cnt); res->iov = g_new(struct iovec, res->iov_cnt); /* read data */ for (i = 0; i < res->iov_cnt; i++) { res->addrs[i] = qemu_get_be64(f); res->iov[i].iov_len = qemu_get_be32(f); } if (!virtio_gpu_load_restore_mapping(g, res)) { g_free(res); return -EINVAL; } virtio_gpu_init_udmabuf(res); resource_id = qemu_get_be32(f); } return 0; } static int virtio_gpu_post_load(void *opaque, int version_id) { VirtIOGPU *g = opaque; struct virtio_gpu_scanout *scanout; struct virtio_gpu_simple_resource *res; int i; for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { scanout = &g->parent_obj.scanout[i]; if (!scanout->resource_id) { continue; } res = virtio_gpu_find_resource(g, scanout->resource_id); if (!res) { return -EINVAL; } if (scanout->fb.format != 0) { uint32_t error = 0; struct virtio_gpu_rect r = { .x = scanout->x, .y = scanout->y, .width = scanout->width, .height = scanout->height }; if (!virtio_gpu_do_set_scanout(g, i, &scanout->fb, res, &r, &error)) { return -EINVAL; } } else { /* legacy v1 migration support */ if (!res->image) { return -EINVAL; } scanout->ds = qemu_create_displaysurface_pixman(res->image); qemu_displaysurface_set_share_handle(scanout->ds, res->share_handle, 0); dpy_gfx_replace_surface(scanout->con, scanout->ds); } dpy_gfx_update_full(scanout->con); if (scanout->cursor.resource_id) { update_cursor(g, &scanout->cursor); } res->scanout_bitmask |= (1 << i); } return 0; } void virtio_gpu_device_realize(DeviceState *qdev, Error **errp) { VirtIODevice *vdev = VIRTIO_DEVICE(qdev); VirtIOGPU *g = VIRTIO_GPU(qdev); if (virtio_gpu_blob_enabled(g->parent_obj.conf)) { if (!virtio_gpu_rutabaga_enabled(g->parent_obj.conf) && !virtio_gpu_virgl_enabled(g->parent_obj.conf) && !virtio_gpu_have_udmabuf()) { error_setg(errp, "need rutabaga or udmabuf for blob resources"); return; } #ifdef VIRGL_VERSION_MAJOR #if VIRGL_VERSION_MAJOR < 1 if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) { error_setg(errp, "old virglrenderer, blob resources unsupported"); return; } #endif #endif } if (virtio_gpu_venus_enabled(g->parent_obj.conf)) { #ifdef VIRGL_VERSION_MAJOR #if VIRGL_VERSION_MAJOR >= 1 if (!virtio_gpu_blob_enabled(g->parent_obj.conf) || !virtio_gpu_hostmem_enabled(g->parent_obj.conf)) { error_setg(errp, "venus requires enabled blob and hostmem options"); return; } #else error_setg(errp, "old virglrenderer, venus unsupported"); return; #endif #endif } if (!virtio_gpu_base_device_realize(qdev, virtio_gpu_handle_ctrl_cb, virtio_gpu_handle_cursor_cb, errp)) { return; } g->ctrl_vq = virtio_get_queue(vdev, 0); g->cursor_vq = virtio_get_queue(vdev, 1); g->ctrl_bh = virtio_bh_new_guarded(qdev, virtio_gpu_ctrl_bh, g); g->cursor_bh = virtio_bh_new_guarded(qdev, virtio_gpu_cursor_bh, g); g->reset_bh = qemu_bh_new(virtio_gpu_reset_bh, g); qemu_cond_init(&g->reset_cond); QTAILQ_INIT(&g->reslist); QTAILQ_INIT(&g->cmdq); QTAILQ_INIT(&g->fenceq); } static void virtio_gpu_device_unrealize(DeviceState *qdev) { VirtIOGPU *g = VIRTIO_GPU(qdev); g_clear_pointer(&g->ctrl_bh, qemu_bh_delete); g_clear_pointer(&g->cursor_bh, qemu_bh_delete); g_clear_pointer(&g->reset_bh, qemu_bh_delete); qemu_cond_destroy(&g->reset_cond); virtio_gpu_base_device_unrealize(qdev); } static void virtio_gpu_reset_bh(void *opaque) { VirtIOGPU *g = VIRTIO_GPU(opaque); VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); struct virtio_gpu_simple_resource *res, *tmp; uint32_t resource_id; Error *local_err = NULL; int i = 0; QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { resource_id = res->resource_id; vgc->resource_destroy(g, res, &local_err); if (local_err) { error_append_hint(&local_err, "%s: %s resource_destroy" "for resource_id = %"PRIu32" failed.\n", __func__, object_get_typename(OBJECT(g)), resource_id); /* error_report_err frees the error object for us */ error_report_err(local_err); local_err = NULL; } } for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL); } g->reset_finished = true; qemu_cond_signal(&g->reset_cond); } void virtio_gpu_reset(VirtIODevice *vdev) { VirtIOGPU *g = VIRTIO_GPU(vdev); struct virtio_gpu_ctrl_command *cmd; if (qemu_in_vcpu_thread()) { g->reset_finished = false; qemu_bh_schedule(g->reset_bh); while (!g->reset_finished) { qemu_cond_wait_bql(&g->reset_cond); } } else { aio_bh_call(g->reset_bh); } while (!QTAILQ_EMPTY(&g->cmdq)) { cmd = QTAILQ_FIRST(&g->cmdq); QTAILQ_REMOVE(&g->cmdq, cmd, next); g_free(cmd); } while (!QTAILQ_EMPTY(&g->fenceq)) { cmd = QTAILQ_FIRST(&g->fenceq); QTAILQ_REMOVE(&g->fenceq, cmd, next); g->inflight--; g_free(cmd); } virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev)); } static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config) { VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); memcpy(config, &g->virtio_config, sizeof(g->virtio_config)); } static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config) { VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); const struct virtio_gpu_config *vgconfig = (const struct virtio_gpu_config *)config; if (vgconfig->events_clear) { g->virtio_config.events_read &= ~vgconfig->events_clear; } } static bool virtio_gpu_blob_state_needed(void *opaque) { VirtIOGPU *g = VIRTIO_GPU(opaque); return virtio_gpu_blob_enabled(g->parent_obj.conf); } const VMStateDescription vmstate_virtio_gpu_blob_state = { .name = "virtio-gpu/blob", .minimum_version_id = VIRTIO_GPU_VM_VERSION, .version_id = VIRTIO_GPU_VM_VERSION, .needed = virtio_gpu_blob_state_needed, .fields = (const VMStateField[]){ { .name = "virtio-gpu/blob", .info = &(const VMStateInfo) { .name = "blob", .get = virtio_gpu_blob_load, .put = virtio_gpu_blob_save, }, .flags = VMS_SINGLE, } /* device */, VMSTATE_END_OF_LIST() }, }; /* * For historical reasons virtio_gpu does not adhere to virtio migration * scheme as described in doc/virtio-migration.txt, in a sense that no * save/load callback are provided to the core. Instead the device data * is saved/loaded after the core data. * * Because of this we need a special vmsd. */ static const VMStateDescription vmstate_virtio_gpu = { .name = "virtio-gpu", .minimum_version_id = VIRTIO_GPU_VM_VERSION, .version_id = VIRTIO_GPU_VM_VERSION, .fields = (const VMStateField[]) { VMSTATE_VIRTIO_DEVICE /* core */, { .name = "virtio-gpu", .info = &(const VMStateInfo) { .name = "virtio-gpu", .get = virtio_gpu_load, .put = virtio_gpu_save, }, .flags = VMS_SINGLE, } /* device */, VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription * const []) { &vmstate_virtio_gpu_blob_state, NULL }, .post_load = virtio_gpu_post_load, }; static Property virtio_gpu_properties[] = { VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf), DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem, 256 * MiB), DEFINE_PROP_BIT("blob", VirtIOGPU, parent_obj.conf.flags, VIRTIO_GPU_FLAG_BLOB_ENABLED, false), DEFINE_PROP_SIZE("hostmem", VirtIOGPU, parent_obj.conf.hostmem, 0), DEFINE_PROP_UINT8("x-scanout-vmstate-version", VirtIOGPU, scanout_vmstate_version, 2), DEFINE_PROP_END_OF_LIST(), }; static void virtio_gpu_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass); VirtIOGPUBaseClass *vgbc = &vgc->parent; vgc->handle_ctrl = virtio_gpu_handle_ctrl; vgc->process_cmd = virtio_gpu_simple_process_cmd; vgc->update_cursor_data = virtio_gpu_update_cursor_data; vgc->resource_destroy = virtio_gpu_resource_destroy; vgbc->gl_flushed = virtio_gpu_handle_gl_flushed; vdc->realize = virtio_gpu_device_realize; vdc->unrealize = virtio_gpu_device_unrealize; vdc->reset = virtio_gpu_reset; vdc->get_config = virtio_gpu_get_config; vdc->set_config = virtio_gpu_set_config; dc->vmsd = &vmstate_virtio_gpu; device_class_set_props(dc, virtio_gpu_properties); } static const TypeInfo virtio_gpu_info = { .name = TYPE_VIRTIO_GPU, .parent = TYPE_VIRTIO_GPU_BASE, .instance_size = sizeof(VirtIOGPU), .class_size = sizeof(VirtIOGPUClass), .class_init = virtio_gpu_class_init, }; module_obj(TYPE_VIRTIO_GPU); module_kconfig(VIRTIO_GPU); static void virtio_register_types(void) { type_register_static(&virtio_gpu_info); } type_init(virtio_register_types)