| /* |
| * Virtio GPU Device |
| * |
| * Copyright Red Hat, Inc. 2013-2014 |
| * |
| * Authors: |
| * Dave Airlie <airlied@redhat.com> |
| * Gerd Hoffmann <kraxel@redhat.com> |
| * |
| * 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 "ui/console.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/display/edid.h" |
| #include "hw/qdev-properties.h" |
| #include "qemu/log.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_resource(VirtIOGPU *g, uint32_t resource_id); |
| 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_cleanup_mapping(VirtIOGPU *g, |
| struct virtio_gpu_simple_resource *res); |
| |
| 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 ? 1 : 0); |
| } |
| |
| static 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)); |
| } |
| |
| static void |
| virtio_gpu_generate_edid(VirtIOGPU *g, int scanout, |
| struct virtio_gpu_resp_edid *edid) |
| { |
| VirtIOGPUBase *b = VIRTIO_GPU_BASE(g); |
| qemu_edid_info info = { |
| .width_mm = b->req_state[scanout].width_mm, |
| .height_mm = b->req_state[scanout].height_mm, |
| .prefx = b->req_state[scanout].width, |
| .prefy = b->req_state[scanout].height, |
| .refresh_rate = b->req_state[scanout].refresh_rate, |
| }; |
| |
| edid->size = cpu_to_le32(sizeof(edid->edid)); |
| qemu_edid_generate(edid->edid, sizeof(edid->edid), &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_generate_edid(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) { |
| res->image = pixman_image_create_bits(pformat, |
| c2d.width, |
| c2d.height, |
| NULL, 0); |
| } |
| |
| 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); |
| } |
| |
| static 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) |
| { |
| 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(g, res); |
| } |
| |
| static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, |
| struct virtio_gpu_ctrl_command *cmd) |
| { |
| struct virtio_gpu_simple_resource *res; |
| int h; |
| uint32_t src_offset, dst_offset, stride; |
| int bpp; |
| pixman_format_code_t format; |
| struct virtio_gpu_transfer_to_host_2d t2d; |
| |
| 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); |
| |
| if (t2d.offset || t2d.r.x || t2d.r.y || |
| t2d.r.width != pixman_image_get_width(res->image)) { |
| void *img_data = pixman_image_get_data(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 { |
| iov_to_buf(res->iov, res->iov_cnt, 0, |
| pixman_image_get_data(res->image), |
| pixman_image_get_stride(res->image) |
| * pixman_image_get_height(res->image)); |
| } |
| } |
| |
| 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; |
| pixman_region16_t flush_region; |
| 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 && |
| console_has_gl(scanout->con)) { |
| dpy_gl_update(scanout->con, 0, 0, scanout->width, |
| scanout->height); |
| } |
| } |
| 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; |
| } |
| |
| pixman_region_init_rect(&flush_region, |
| rf.r.x, rf.r.y, rf.r.width, rf.r.height); |
| for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { |
| pixman_region16_t region, finalregion; |
| pixman_box16_t *extents; |
| |
| if (!(res->scanout_bitmask & (1 << i))) { |
| continue; |
| } |
| scanout = &g->parent_obj.scanout[i]; |
| |
| pixman_region_init(&finalregion); |
| pixman_region_init_rect(®ion, scanout->x, scanout->y, |
| scanout->width, scanout->height); |
| |
| pixman_region_intersect(&finalregion, &flush_region, ®ion); |
| pixman_region_translate(&finalregion, -scanout->x, -scanout->y); |
| extents = pixman_region_extents(&finalregion); |
| /* work out the area we need to update for each console */ |
| dpy_gfx_update(g->parent_obj.scanout[i].con, |
| extents->x1, extents->y1, |
| extents->x2 - extents->x1, |
| extents->y2 - extents->y1); |
| |
| pixman_region_fini(®ion); |
| pixman_region_fini(&finalregion); |
| } |
| pixman_region_fini(&flush_region); |
| } |
| |
| static void virtio_unref_resource(pixman_image_t *image, void *data) |
| { |
| pixman_image_unref(data); |
| } |
| |
| static void virtio_gpu_update_scanout(VirtIOGPU *g, |
| uint32_t scanout_id, |
| struct virtio_gpu_simple_resource *res, |
| 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; |
| } |
| |
| static void 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; |
| } |
| |
| 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, r); |
| return; |
| } |
| } |
| |
| 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); |
| if (!scanout->ds) { |
| *error = VIRTIO_GPU_RESP_ERR_UNSPEC; |
| return; |
| } |
| |
| 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, r); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| uint64_t fbend; |
| |
| 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; |
| } |
| |
| 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); |
| cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; |
| return; |
| } |
| |
| 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 += fb.stride * (ss.r.height - 1); |
| fbend += fb.bytes_pp * ss.r.width; |
| if (fbend > res->blob_size) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: fb end out of range\n", |
| __func__); |
| 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); |
| } |
| |
| static 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); |
| |
| 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; |
| } |
| fprintf(stderr, "inflight: %3d (+)\r", 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)) { |
| fprintf(stderr, "inflight: %3d (-)\r", 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(&g->parent_obj.parent_obj, 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 const VMStateDescription vmstate_virtio_gpu_scanout = { |
| .name = "virtio-gpu-one-scanout", |
| .version_id = 1, |
| .fields = (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_END_OF_LIST() |
| }, |
| }; |
| |
| static const VMStateDescription vmstate_virtio_gpu_scanouts = { |
| .name = "virtio-gpu-scanouts", |
| .version_id = 1, |
| .fields = (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) { |
| 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 int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, |
| const VMStateField *field) |
| { |
| VirtIOGPU *g = opaque; |
| struct virtio_gpu_simple_resource *res; |
| struct virtio_gpu_scanout *scanout; |
| 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->image = pixman_image_create_bits(pformat, |
| res->width, res->height, |
| NULL, 0); |
| if (!res->image) { |
| g_free(res); |
| return -EINVAL; |
| } |
| |
| res->hostmem = calc_image_hostmem(pformat, res->width, res->height); |
| |
| 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); |
| |
| /* restore mapping */ |
| 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); |
| pixman_image_unref(res->image); |
| g_free(res); |
| return -EINVAL; |
| } |
| } |
| |
| QTAILQ_INSERT_HEAD(&g->reslist, res, next); |
| g->hostmem += res->hostmem; |
| |
| resource_id = qemu_get_be32(f); |
| } |
| |
| /* load & apply scanout state */ |
| vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); |
| 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; |
| } |
| scanout->ds = qemu_create_displaysurface_pixman(res->image); |
| if (!scanout->ds) { |
| return -EINVAL; |
| } |
| |
| 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_have_udmabuf()) { |
| error_setg(errp, "cannot enable blob resources without udmabuf"); |
| return; |
| } |
| |
| if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) { |
| error_setg(errp, "blobs and virgl are not compatible (yet)"); |
| return; |
| } |
| } |
| |
| 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 = qemu_bh_new_guarded(virtio_gpu_ctrl_bh, g, |
| &qdev->mem_reentrancy_guard); |
| g->cursor_bh = qemu_bh_new_guarded(virtio_gpu_cursor_bh, g, |
| &qdev->mem_reentrancy_guard); |
| QTAILQ_INIT(&g->reslist); |
| QTAILQ_INIT(&g->cmdq); |
| QTAILQ_INIT(&g->fenceq); |
| } |
| |
| void virtio_gpu_reset(VirtIODevice *vdev) |
| { |
| VirtIOGPU *g = VIRTIO_GPU(vdev); |
| struct virtio_gpu_simple_resource *res, *tmp; |
| struct virtio_gpu_ctrl_command *cmd; |
| |
| QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { |
| virtio_gpu_resource_destroy(g, res); |
| } |
| |
| 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; |
| } |
| } |
| |
| /* |
| * 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 = (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() |
| }, |
| }; |
| |
| 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_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; |
| vgbc->gl_flushed = virtio_gpu_handle_gl_flushed; |
| |
| vdc->realize = virtio_gpu_device_realize; |
| 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) |