From: Antonio Caggiano <antonio.caggi...@collabora.com>
Support BLOB resources creation, mapping and unmapping by calling the
new stable virglrenderer 0.10 interface. Only enabled when available and
via the blob config. E.g. -device virtio-vga-gl,blob=true
Signed-off-by: Antonio Caggiano <antonio.caggi...@collabora.com>
Signed-off-by: Xenia Ragiadakou <xenia.ragiada...@amd.com>
Signed-off-by: Huang Rui <ray.hu...@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipe...@collabora.com>
---
hw/display/virtio-gpu-virgl.c | 196 +++++++++++++++++++++++++++++++++
hw/display/virtio-gpu.c | 4 +-
include/hw/virtio/virtio-gpu.h | 1 +
3 files changed, 200 insertions(+), 1 deletion(-)
diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index c2057b0c2147..ec63f5d698b7 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -32,6 +32,55 @@ virgl_get_egl_display(G_GNUC_UNUSED void *cookie)
}
#endif
+#ifdef HAVE_VIRGL_RESOURCE_BLOB
+static int
+virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g,
+ struct virtio_gpu_simple_resource *res,
+ uint64_t offset)
+{
+ VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
+ uint64_t size;
+ void *data;
+ int ret;
+
+ if (!virtio_gpu_hostmem_enabled(b->conf)) {
+ return -EOPNOTSUPP;
+ }
+
+ ret = virgl_renderer_resource_map(res->resource_id, &data, &size);
+ if (ret) {
+ return -ret;
+ }
+
+ res->mr = g_new0(MemoryRegion, 1);
+ memory_region_init_ram_ptr(res->mr, OBJECT(res->mr), "blob",
+ size, data);
+ memory_region_add_subregion(&b->hostmem, offset, res->mr);
+ memory_region_set_enabled(res->mr, true);
+
+ return 0;
+}
+
+static void
+virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g,
+ struct virtio_gpu_simple_resource *res)
+{
+ VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
+
+ if (!res->mr) {
+ return;
+ }
+
+ memory_region_set_enabled(res->mr, false);
+ memory_region_del_subregion(&b->hostmem, res->mr);
+
+ /* memory region owns res->mr object and frees it when mr is released */
+ res->mr = NULL;
+
+ virgl_renderer_resource_unmap(res->resource_id);
+}
+#endif /* HAVE_VIRGL_RESOURCE_BLOB */
+
static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
@@ -145,6 +194,10 @@ static void virgl_cmd_resource_unref(VirtIOGPU *g,
return;
}
+#ifdef HAVE_VIRGL_RESOURCE_BLOB
+ virtio_gpu_virgl_unmap_resource_blob(g, res);
+#endif
+
virgl_renderer_resource_detach_iov(unref.resource_id,
&res_iovs,
&num_iovs);
@@ -495,6 +548,140 @@ static void virgl_cmd_get_capset(VirtIOGPU *g,
}
#ifdef HAVE_VIRGL_RESOURCE_BLOB
+static void virgl_cmd_resource_create_blob(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd)
+{
+ struct virgl_renderer_resource_create_blob_args virgl_args = { 0 };
+ struct virtio_gpu_resource_create_blob cblob;
+ struct virtio_gpu_simple_resource *res;
+ int ret;
+
+ if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) {
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
+ return;
+ }
+
+ 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;
+ }
+
+ res = virtio_gpu_find_resource(g, cblob.resource_id);
+ if (res) {
+ 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;
+ res->dmabuf_fd = -1;
+
+ if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_HOST3D) {
+ ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob),
+ cmd, &res->addrs,
+ &res->iov, &res->iov_cnt);
+ if (!ret) {
+ g_free(res);
+ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ return;
+ }
+ }
+
+ QTAILQ_INSERT_HEAD(&g->reslist, res, next);
+
+ virgl_args.res_handle = cblob.resource_id;
+ virgl_args.ctx_id = cblob.hdr.ctx_id;
+ virgl_args.blob_mem = cblob.blob_mem;
+ virgl_args.blob_id = cblob.blob_id;
+ virgl_args.blob_flags = cblob.blob_flags;
+ virgl_args.size = cblob.size;
+ virgl_args.iovecs = res->iov;
+ virgl_args.num_iovs = res->iov_cnt;
+
+ ret = virgl_renderer_resource_create_blob(&virgl_args);
+ if (ret) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: virgl blob create error: %s\n",
+ __func__, strerror(-ret));
+ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ }
+}
+
+static void virgl_cmd_resource_map_blob(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd)
+{
+ struct virtio_gpu_resource_map_blob mblob;
+ struct virtio_gpu_simple_resource *res;
+ struct virtio_gpu_resp_map_info resp;
+ int ret;
+
+ VIRTIO_GPU_FILL_CMD(mblob);
+ virtio_gpu_map_blob_bswap(&mblob);
+
+ res = virtio_gpu_find_resource(g, mblob.resource_id);
+ if (!res) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
+ __func__, mblob.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ if (res->mr) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already mapped %d\n",
+ __func__, mblob.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ ret = virtio_gpu_virgl_map_resource_blob(g, res, mblob.offset);
+ if (ret) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource map error: %s\n",
+ __func__, strerror(ret));
+ cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY;
+ return;
+ }
+
+ memset(&resp, 0, sizeof(resp));
+ resp.hdr.type = VIRTIO_GPU_RESP_OK_MAP_INFO;
+ virgl_renderer_resource_get_map_info(mblob.resource_id, &resp.map_info);
+ virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
+}
+
+static void virgl_cmd_resource_unmap_blob(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command *cmd)
+{
+ struct virtio_gpu_resource_unmap_blob ublob;
+ struct virtio_gpu_simple_resource *res;
+
+ VIRTIO_GPU_FILL_CMD(ublob);
+ virtio_gpu_unmap_blob_bswap(&ublob);
+
+ res = virtio_gpu_find_resource(g, ublob.resource_id);
+ if (!res) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
+ __func__, ublob.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ if (!res->mr) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already unmapped %d\n",
+ __func__, ublob.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
+ return;
+ }
+
+ virtio_gpu_virgl_unmap_resource_blob(g, res);
+}
+
static void virgl_cmd_set_scanout_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
@@ -661,6 +848,15 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
virtio_gpu_get_edid(g, cmd);
break;
#ifdef HAVE_VIRGL_RESOURCE_BLOB
+ case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB:
+ virgl_cmd_resource_create_blob(g, cmd);
+ break;
+ case VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB:
+ virgl_cmd_resource_map_blob(g, cmd);
+ break;
+ case VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB:
+ virgl_cmd_resource_unmap_blob(g, cmd);
+ break;
case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB:
virgl_cmd_set_scanout_blob(g, cmd);
break;
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 1e57a53d346c..e6e09f4bf8da 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1478,10 +1478,12 @@ void virtio_gpu_device_realize(DeviceState *qdev, Error
**errp)
return;
}
+#ifndef HAVE_VIRGL_RESOURCE_BLOB
if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) {
- error_setg(errp, "blobs and virgl are not compatible (yet)");
+ error_setg(errp, "old virglrenderer, blob resources unsupported");
return;
}
+#endif
}
if (!virtio_gpu_base_device_realize(qdev,
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 44c676c3ca4a..f3681476eaf6 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -60,6 +60,7 @@ struct virtio_gpu_simple_resource {
void *blob;
int dmabuf_fd;
uint8_t *remapped;
+ MemoryRegion *mr;
QTAILQ_ENTRY(virtio_gpu_simple_resource) next;
};
--
2.44.0
