This patch adds the core code for virtio gpu emulation,
covering 2d support.
Written by Dave Airlie and Gerd Hoffmann.
Signed-off-by: Dave Airlie <airl...@redhat.com>
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
hw/display/Makefile.objs | 2 +
hw/display/virtio-gpu.c | 918 +++++++++++++++++++++++++++++++++++++++++
include/hw/virtio/virtio-gpu.h | 145 +++++++
trace-events | 14 +
4 files changed, 1079 insertions(+)
create mode 100644 hw/display/virtio-gpu.c
create mode 100644 include/hw/virtio/virtio-gpu.h
diff --git a/hw/display/Makefile.objs b/hw/display/Makefile.objs
index 3ea106d..61c80f3 100644
--- a/hw/display/Makefile.objs
+++ b/hw/display/Makefile.objs
@@ -34,3 +34,5 @@ obj-$(CONFIG_CG3) += cg3.o
obj-$(CONFIG_VGA) += vga.o
common-obj-$(CONFIG_QXL) += qxl.o qxl-logger.o qxl-render.o
+
+obj-$(CONFIG_VIRTIO) += virtio-gpu.o
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
new file mode 100644
index 0000000..4b10ca1
--- /dev/null
+++ b/hw/display/virtio-gpu.c
@@ -0,0 +1,918 @@
+/*
+ * Virtio GPU Device
+ *
+ * Copyright Red Hat, Inc. 2013-2014
+ *
+ * Authors:
+ * Dave Airlie <airl...@redhat.com>
+ * Gerd Hoffmann <kra...@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu-common.h"
+#include "qemu/iov.h"
+#include "ui/console.h"
+#include "trace.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-gpu.h"
+#include "hw/virtio/virtio-bus.h"
+
+static struct virtio_gpu_simple_resource*
+virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
+
+static void update_cursor_data_simple(VirtIOGPU *g,
+ struct virtio_gpu_scanout *s,
+ uint32_t resource_id)
+{
+ struct virtio_gpu_simple_resource *res;
+ uint32_t pixels;
+
+ res = virtio_gpu_find_resource(g, resource_id);
+ if (!res) {
+ return;
+ }
+
+ if (pixman_image_get_width(res->image) != s->current_cursor->width ||
+ pixman_image_get_height(res->image) != s->current_cursor->height) {
+ return;
+ }
+
+ pixels = s->current_cursor->width * s->current_cursor->height;
+ memcpy(s->current_cursor->data,
+ pixman_image_get_data(res->image),
+ pixels * sizeof(uint32_t));
+}
+
+static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor
*cursor)
+{
+ struct virtio_gpu_scanout *s;
+
+ if (cursor->pos.scanout_id >= g->conf.max_outputs) {
+ return;
+ }
+ s = &g->scanout[cursor->pos.scanout_id];
+
+ if (cursor->hdr.type != VIRTIO_GPU_CMD_MOVE_CURSOR) {
+ 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) {
+ update_cursor_data_simple(g, s, cursor->resource_id);
+ }
+ dpy_cursor_define(s->con, s->current_cursor);
+ }
+ dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y,
+ cursor->resource_id ? 1 : 0);
+}
+
+static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config)
+{
+ VirtIOGPU *g = VIRTIO_GPU(vdev);
+ memcpy(config, &g->virtio_config, sizeof(g->virtio_config));
+}
+
+static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config)
+{
+ VirtIOGPU *g = VIRTIO_GPU(vdev);
+ struct virtio_gpu_config vgconfig;
+
+ memcpy(&vgconfig, config, sizeof(g->virtio_config));
+
+ if (vgconfig.events_clear) {
+ g->virtio_config.events_read &= ~vgconfig.events_clear;
+ }
+}
+
+static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features)
+{
+ return features;
+}
+
+static void virtio_gpu_notify_event(VirtIOGPU *g, uint32_t event_type)
+{
+ g->virtio_config.events_read |= event_type;
+ virtio_notify_config(&g->parent_obj);
+}
+
+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;
+}
+
+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;
+ }
+ 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));
+}
+
+static void
+virtio_gpu_fill_display_info(VirtIOGPU *g,
+ struct virtio_gpu_resp_display_info *dpy_info)
+{
+ int i;
+
+ for (i = 0; i < g->conf.max_outputs; i++) {
+ if (g->enabled_output_bitmask & (1 << i)) {
+ dpy_info->pmodes[i].enabled = 1;
+ dpy_info->pmodes[i].r.width = g->req_state[i].width;
+ dpy_info->pmodes[i].r.height = g->req_state[i].height;
+ }
+ }
+}
+
+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_fill_display_info(g, &display_info);
+ virtio_gpu_ctrl_response(g, cmd, &display_info.hdr,
+ sizeof(display_info));
+}
+
+static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format)
+{
+ switch (virtio_gpu_format) {
+#ifdef HOST_WORDS_BIGENDIAN
+ case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
+ return PIXMAN_b8g8r8x8;
+ case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
+ return PIXMAN_b8g8r8a8;
+ case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
+ return PIXMAN_x8r8g8b8;
+ case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
+ return PIXMAN_a8r8g8b8;
+ case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
+ return PIXMAN_r8g8b8x8;
+ case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
+ return PIXMAN_r8g8b8a8;
+ case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
+ return PIXMAN_x8b8g8r8;
+ case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
+ return PIXMAN_a8b8g8r8;
+#else
+ case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
+ return PIXMAN_x8r8g8b8;
+ case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
+ return PIXMAN_a8r8g8b8;
+ case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
+ return PIXMAN_b8g8r8x8;
+ case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
+ return PIXMAN_b8g8r8a8;
+ case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
+ return PIXMAN_x8b8g8r8;
+ case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
+ return PIXMAN_a8b8g8r8;
+ case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
+ return PIXMAN_r8g8b8x8;
+ case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
+ return PIXMAN_r8g8b8a8;
+#endif
+ default:
+ return 0;
+ }
+}
+
+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);
+ 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 = 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);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
+ return;
+ }
+ 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);
+}
+
+static void virtio_gpu_resource_destroy(VirtIOGPU *g,
+ struct virtio_gpu_simple_resource *res)
+{
+ pixman_image_unref(res->image);
+ QTAILQ_REMOVE(&g->reslist, res, next);
+ 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);
+ 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);
+ trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
+
+ res = virtio_gpu_find_resource(g, t2d.resource_id);
+ if (!res || !res->iov) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
+ __func__, t2d.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ 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 = (PIXMAN_FORMAT_BPP(format) + 7) / 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;
+ pixman_region16_t flush_region;
+ int i;
+
+ VIRTIO_GPU_FILL_CMD(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_resource(g, rf.resource_id);
+ if (!res) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
+ __func__, rf.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ if (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 < VIRTIO_GPU_MAX_SCANOUT; i++) {
+ struct virtio_gpu_scanout *scanout;
+ pixman_region16_t region, finalregion;
+ pixman_box16_t *extents;
+
+ if (!(res->scanout_bitmask & (1 << i))) {
+ continue;
+ }
+ scanout = &g->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->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_gpu_set_scanout(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd)
+{
+ struct virtio_gpu_simple_resource *res;
+ struct virtio_gpu_scanout *scanout;
+ pixman_format_code_t format;
+ uint32_t offset;
+ int bpp;
+ struct virtio_gpu_set_scanout ss;
+
+ VIRTIO_GPU_FILL_CMD(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);
+
+ g->enable = 1;
+ if (ss.resource_id == 0) {
+ scanout = &g->scanout[ss.scanout_id];
+ if (scanout->resource_id) {
+ res = virtio_gpu_find_resource(g, scanout->resource_id);
+ if (res) {
+ res->scanout_bitmask &= ~(1 << ss.scanout_id);
+ }
+ }
+ if (ss.scanout_id == 0 ||
+ ss.scanout_id >= g->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;
+ }
+ dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
+ scanout->ds = NULL;
+ scanout->width = 0;
+ scanout->height = 0;
+ return;
+ }
+
+ /* create a surface for this scanout */
+ if (ss.scanout_id >= VIRTIO_GPU_MAX_SCANOUT ||
+ ss.scanout_id >= g->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;
+ }
+
+ res = virtio_gpu_find_resource(g, ss.resource_id);
+ if (!res) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
+ __func__, ss.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ if (ss.r.x > res->width ||
+ ss.r.y > res->height ||
+ ss.r.width > res->width ||
+ ss.r.height > res->height ||
+ ss.r.x + ss.r.width > res->width ||
+ ss.r.y + ss.r.height > res->height) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
+ " resource %d, (%d,%d)+%d,%d vs %d %d\n",
+ __func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y,
+ ss.r.width, ss.r.height, res->width, res->height);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
+ return;
+ }
+
+ scanout = &g->scanout[ss.scanout_id];
+
+ format = pixman_image_get_format(res->image);
+ bpp = (PIXMAN_FORMAT_BPP(format) + 7) / 8;
+ offset = (ss.r.x * bpp) + ss.r.y * pixman_image_get_stride(res->image);
+ if (!scanout->ds || surface_data(scanout->ds)
+ != ((uint8_t *)pixman_image_get_data(res->image) + offset) ||
+ scanout->width != ss.r.width ||
+ scanout->height != ss.r.height) {
+ /* realloc the surface ptr */
+ scanout->ds = qemu_create_displaysurface_from
+ (ss.r.width, ss.r.height, format,
+ pixman_image_get_stride(res->image),
+ (uint8_t *)pixman_image_get_data(res->image) + offset);
+ if (!scanout->ds) {
+ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ return;
+ }
+ dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
+ }
+
+ res->scanout_bitmask |= (1 << ss.scanout_id);
+ scanout->resource_id = ss.resource_id;
+ scanout->x = ss.r.x;
+ scanout->y = ss.r.y;
+ scanout->width = ss.r.width;
+ scanout->height = ss.r.height;
+}
+
+int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing
*ab,
+ struct virtio_gpu_ctrl_command *cmd,
+ struct iovec **iov)
+{
+ struct virtio_gpu_mem_entry *ents;
+ size_t esize, s;
+ int i;
+
+ if (ab->nr_entries > 16384) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: nr_entries is too big (%d > 1024)\n",
+ __func__, ab->nr_entries);
+ return -1;
+ }
+
+ esize = sizeof(*ents) * ab->nr_entries;
+ ents = g_malloc(esize);
+ s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
+ sizeof(*ab), 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 = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
+ for (i = 0; i < ab->nr_entries; i++) {
+ hwaddr len = ents[i].length;
+ (*iov)[i].iov_len = ents[i].length;
+ (*iov)[i].iov_base = cpu_physical_memory_map(ents[i].addr, &len, 1);
+ if (!(*iov)[i].iov_base || len != ents[i].length) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
+ " resource %d element %d\n",
+ __func__, ab->resource_id, i);
+ virtio_gpu_cleanup_mapping_iov(*iov, i);
+ g_free(ents);
+ g_free(*iov);
+ *iov = NULL;
+ return -1;
+ }
+ }
+ g_free(ents);
+ return 0;
+}
+
+void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ cpu_physical_memory_unmap(iov[i].iov_base, iov[i].iov_len, 1,
+ iov[i].iov_len);
+ }
+}
+
+static void virtio_gpu_cleanup_mapping(struct virtio_gpu_simple_resource *res)
+{
+ virtio_gpu_cleanup_mapping_iov(res->iov, res->iov_cnt);
+ g_free(res->iov);
+ res->iov = NULL;
+ res->iov_cnt = 0;
+}
+
+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);
+ 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;
+ }
+
+ ret = virtio_gpu_create_mapping_iov(&ab, cmd, &res->iov);
+ if (ret != 0) {
+ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ return;
+ }
+
+ res->iov_cnt = ab.nr_entries;
+}
+
+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);
+ trace_virtio_gpu_cmd_res_back_detach(detach.resource_id);
+
+ res = virtio_gpu_find_resource(g, detach.resource_id);
+ if (!res || !res->iov) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
+ __func__, detach.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+ virtio_gpu_cleanup_mapping(res);
+}
+
+static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd)
+{
+ VIRTIO_GPU_FILL_CMD(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_RESOURCE_CREATE_2D:
+ virtio_gpu_resource_create_2d(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_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) {
+ 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);
+}
+
+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 = g_new(struct virtio_gpu_ctrl_command, 1);
+ while (virtqueue_pop(vq, &cmd->elem)) {
+ cmd->vq = vq;
+ cmd->error = 0;
+ cmd->finished = false;
+ g->stats.requests++;
+
+ virtio_gpu_simple_process_cmd(g, cmd);
+ if (!cmd->finished) {
+ QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next);
+ g->stats.inflight++;
+ if (g->stats.max_inflight < g->stats.inflight) {
+ g->stats.max_inflight = g->stats.inflight;
+ }
+ fprintf(stderr, "inflight: %3d (+)\r", g->stats.inflight);
+ cmd = g_new(struct virtio_gpu_ctrl_command, 1);
+ }
+ }
+ g_free(cmd);
+}
+
+static void virtio_gpu_ctrl_bh(void *opaque)
+{
+ VirtIOGPU *g = opaque;
+ virtio_gpu_handle_ctrl(&g->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;
+ }
+ while (virtqueue_pop(vq, &elem)) {
+ 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 {
+ update_cursor(g, &cursor_info);
+ }
+ virtqueue_push(vq, &elem, 0);
+ virtio_notify(vdev, vq);
+ }
+}
+
+static void virtio_gpu_cursor_bh(void *opaque)
+{
+ VirtIOGPU *g = opaque;
+ virtio_gpu_handle_cursor(&g->parent_obj, g->cursor_vq);
+}
+
+static void virtio_gpu_invalidate_display(void *opaque)
+{
+}
+
+static void virtio_gpu_update_display(void *opaque)
+{
+}
+
+static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
+{
+}
+
+static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
+{
+ VirtIOGPU *g = opaque;
+
+ if (idx > g->conf.max_outputs) {
+ return -1;
+ }
+
+ g->req_state[idx].x = info->xoff;
+ g->req_state[idx].y = info->yoff;
+ g->req_state[idx].width = info->width;
+ g->req_state[idx].height = info->height;
+
+ if (info->width && info->height) {
+ g->enabled_output_bitmask |= (1 << idx);
+ } else {
+ g->enabled_output_bitmask &= ~(1 << idx);
+ }
+
+ /* send event to guest */
+ virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
+ return 0;
+}
+
+const GraphicHwOps virtio_gpu_ops = {
+ .invalidate = virtio_gpu_invalidate_display,
+ .gfx_update = virtio_gpu_update_display,
+ .text_update = virtio_gpu_text_update,
+ .ui_info = virtio_gpu_ui_info,
+};
+
+static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
+{
+ VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
+ VirtIOGPU *g = VIRTIO_GPU(qdev);
+ int i;
+
+ g->config_size = sizeof(struct virtio_gpu_config);
+ g->virtio_config.num_scanouts = g->conf.max_outputs;
+ virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU,
+ g->config_size);
+
+ g->req_state[0].width = 1024;
+ g->req_state[0].height = 768;
+
+ g->ctrl_vq = virtio_add_queue(vdev, 64, virtio_gpu_handle_ctrl_cb);
+ g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb);
+
+ g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g);
+ g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g);
+ QTAILQ_INIT(&g->reslist);
+ QTAILQ_INIT(&g->fenceq);
+
+ g->enabled_output_bitmask = 1;
+ g->qdev = qdev;
+
+ for (i = 0; i < g->conf.max_outputs; i++) {
+ g->scanout[i].con =
+ graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
+ if (i > 0) {
+ dpy_gfx_replace_surface(g->scanout[i].con, NULL);
+ }
+ }
+}
+
+static void virtio_gpu_instance_init(Object *obj)
+{
+}
+
+static void virtio_gpu_reset(VirtIODevice *vdev)
+{
+ VirtIOGPU *g = VIRTIO_GPU(vdev);
+ struct virtio_gpu_simple_resource *res, *tmp;
+ int i;
+
+ g->enable = 0;
+
+ QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
+ virtio_gpu_resource_destroy(g, res);
+ }
+ for (i = 0; i < g->conf.max_outputs; i++) {
+#if 0
+ g->req_state[i].x = 0;
+ g->req_state[i].y = 0;
+ if (i == 0) {
+ g->req_state[0].width = 1024;
+ g->req_state[0].height = 768;
+ } else {
+ g->req_state[i].width = 0;
+ g->req_state[i].height = 0;
+ }
+#endif
+ g->scanout[i].resource_id = 0;
+ g->scanout[i].width = 0;
+ g->scanout[i].height = 0;
+ g->scanout[i].x = 0;
+ g->scanout[i].y = 0;
+ g->scanout[i].ds = NULL;
+ }
+ g->enabled_output_bitmask = 1;
+}
+
+static Property virtio_gpu_properties[] = {
+ DEFINE_VIRTIO_GPU_PROPERTIES(VirtIOGPU, conf),
+ 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);
+
+ vdc->realize = virtio_gpu_device_realize;
+ vdc->get_config = virtio_gpu_get_config;
+ vdc->set_config = virtio_gpu_set_config;
+ vdc->get_features = virtio_gpu_get_features;
+
+ vdc->reset = virtio_gpu_reset;
+
+ dc->props = virtio_gpu_properties;
+}
+
+static const TypeInfo virtio_gpu_info = {
+ .name = TYPE_VIRTIO_GPU,
+ .parent = TYPE_VIRTIO_DEVICE,
+ .instance_size = sizeof(VirtIOGPU),
+ .instance_init = virtio_gpu_instance_init,
+ .class_init = virtio_gpu_class_init,
+};
+
+static void virtio_register_types(void)
+{
+ type_register_static(&virtio_gpu_info);
+}
+
+type_init(virtio_register_types)
+
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr) != 24);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor) != 56);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref) != 32);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d) != 40);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout) != 48);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush) != 48);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d) != 56);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry) != 16);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32);
+QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info) != 408);
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
new file mode 100644
index 0000000..b8c9244
--- /dev/null
+++ b/include/hw/virtio/virtio-gpu.h
@@ -0,0 +1,145 @@
+/*
+ * Virtio GPU Device
+ *
+ * Copyright Red Hat, Inc. 2013-2014
+ *
+ * Authors:
+ * Dave Airlie <airl...@redhat.com>
+ * Gerd Hoffmann <kra...@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef _QEMU_VIRTIO_VGA_H
+#define _QEMU_VIRTIO_VGA_H
+
+#include "qemu/queue.h"
+#include "ui/qemu-pixman.h"
+#include "ui/console.h"
+#include "hw/virtio/virtio.h"
+#include "hw/pci/pci.h"
+
+#include "standard-headers/linux/virtio_gpu.h"
+#define TYPE_VIRTIO_GPU "virtio-gpu-device"
+#define VIRTIO_GPU(obj) \
+ OBJECT_CHECK(VirtIOGPU, (obj), TYPE_VIRTIO_GPU)
+
+#define VIRTIO_ID_GPU 16
+
+#define VIRTIO_GPU_MAX_SCANOUT 4
+
+struct virtio_gpu_simple_resource {
+ uint32_t resource_id;
+ uint32_t width;
+ uint32_t height;
+ uint32_t format;
+ struct iovec *iov;
+ unsigned int iov_cnt;
+ uint32_t scanout_bitmask;
+ pixman_image_t *image;
+ QTAILQ_ENTRY(virtio_gpu_simple_resource) next;
+};
+
+struct virtio_gpu_scanout {
+ QemuConsole *con;
+ DisplaySurface *ds;
+ uint32_t width, height;
+ int x, y;
+ int invalidate;
+ uint32_t resource_id;
+ QEMUCursor *current_cursor;
+};
+
+struct virtio_gpu_requested_state {
+ uint32_t width, height;
+ int x, y;
+};
+
+struct virtio_gpu_conf {
+ uint32_t max_outputs;
+};
+
+struct virtio_gpu_ctrl_command {
+ VirtQueueElement elem;
+ VirtQueue *vq;
+ struct virtio_gpu_ctrl_hdr cmd_hdr;
+ uint32_t error;
+ bool finished;
+ QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
+};
+
+typedef struct VirtIOGPU {
+ VirtIODevice parent_obj;
+
+ QEMUBH *ctrl_bh;
+ QEMUBH *cursor_bh;
+ VirtQueue *ctrl_vq;
+ VirtQueue *cursor_vq;
+
+ int enable;
+
+ int config_size;
+ DeviceState *qdev;
+
+ QTAILQ_HEAD(, virtio_gpu_simple_resource) reslist;
+ QTAILQ_HEAD(, virtio_gpu_ctrl_command) fenceq;
+
+ struct virtio_gpu_scanout scanout[VIRTIO_GPU_MAX_SCANOUT];
+ struct virtio_gpu_requested_state req_state[VIRTIO_GPU_MAX_SCANOUT];
+
+ struct virtio_gpu_conf conf;
+ int enabled_output_bitmask;
+ struct virtio_gpu_config virtio_config;
+
+ QEMUTimer *fence_poll;
+ QEMUTimer *print_stats;
+
+ struct {
+ uint32_t inflight;
+ uint32_t max_inflight;
+ uint32_t requests;
+ uint32_t req_3d;
+ uint32_t bytes_3d;
+ } stats;
+} VirtIOGPU;
+
+extern const GraphicHwOps virtio_gpu_ops;
+
+/* to share between PCI and VGA */
+#define DEFINE_VIRTIO_GPU_PCI_PROPERTIES(_state) \
+ DEFINE_PROP_BIT("ioeventfd", _state, flags, \
+ VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), \
+ DEFINE_PROP_UINT32("vectors", _state, nvectors, 3)
+
+#define DEFINE_VIRTIO_GPU_PROPERTIES(_state, _conf_field) \
+ DEFINE_PROP_UINT32("max_outputs", _state, _conf_field.max_outputs, 1)
+
+#define VIRTIO_GPU_FILL_CMD(out) do { \
+ size_t s; \
+ s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \
+ &out, sizeof(out)); \
+ if (s != sizeof(out)) { \
+ qemu_log_mask(LOG_GUEST_ERROR, \
+ "%s: command size incorrect %zu vs %zu\n", \
+ __func__, s, sizeof(out)); \
+ return; \
+ } \
+ } while (0)
+
+/* virtio-gpu.c */
+void virtio_gpu_ctrl_response(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd,
+ struct virtio_gpu_ctrl_hdr *resp,
+ size_t resp_len);
+void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd,
+ enum virtio_gpu_ctrl_type type);
+void virtio_gpu_get_display_info(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd);
+int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing
*ab,
+ struct virtio_gpu_ctrl_command *cmd,
+ struct iovec **iov);
+void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count);
+
+#endif
diff --git a/trace-events b/trace-events
index a589650..7713e0b 100644
--- a/trace-events
+++ b/trace-events
@@ -1167,6 +1167,20 @@ vmware_scratch_read(uint32_t index, uint32_t value)
"index %d, value 0x%x"
vmware_scratch_write(uint32_t index, uint32_t value) "index %d, value 0x%x"
vmware_setmode(uint32_t w, uint32_t h, uint32_t bpp) "%dx%d @ %d bpp"
+# hw/display/virtio-gpu.c
+virtio_gpu_cmd_get_display_info(void) ""
+virtio_gpu_cmd_get_caps(void) ""
+virtio_gpu_cmd_set_scanout(uint32_t id, uint32_t res, uint32_t w, uint32_t h,
uint32_t x, uint32_t y) "id %d, res 0x%x, w %d, h %d, x %d, y %d"
+virtio_gpu_cmd_res_create_2d(uint32_t res, uint32_t fmt, uint32_t w, uint32_t
h) "res 0x%x, fmt 0x%x, w %d, h %d"
+virtio_gpu_cmd_res_create_3d(uint32_t res, uint32_t fmt, uint32_t w, uint32_t
h, uint32_t d) "res 0x%x, fmt 0x%x, w %d, h %d, d %d"
+virtio_gpu_cmd_res_unref(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_back_attach(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_back_detach(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_xfer_toh_2d(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_flush(uint32_t res, uint32_t w, uint32_t h, uint32_t x,
uint32_t y) "res 0x%x, w %d, h %d, x %d, y %d"
+virtio_gpu_fence_ctrl(uint64_t fence, uint32_t type) "fence 0x%" PRIx64 ",
type 0x%x"
+virtio_gpu_fence_resp(uint64_t fence) "fence 0x%" PRIx64
+
# savevm.c
qemu_loadvm_state_section(unsigned int section_type) "%d"
qemu_loadvm_state_section_partend(uint32_t section_id) "%u"
--
1.8.3.1
