virtio-gpu: add bswap helpers header

The helper functions are useful to build the vhost-user-gpu backend.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190524130946.31736-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/display/virtio-gpu.c

@@ -20,6 +20,7 @@
 #include "sysemu/dma.h"
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-gpu.h"
+#include "hw/virtio/virtio-gpu-bswap.h"
 #include "hw/virtio/virtio-bus.h"
 #include "hw/display/edid.h"
 #include "migration/blocker.h"
@@ -34,48 +35,6 @@ virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
                                        struct virtio_gpu_simple_resource *res);
 
-static void
-virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
-{
-    le32_to_cpus(&hdr->type);
-    le32_to_cpus(&hdr->flags);
-    le64_to_cpus(&hdr->fence_id);
-    le32_to_cpus(&hdr->ctx_id);
-    le32_to_cpus(&hdr->padding);
-}
-
-static void virtio_gpu_bswap_32(void *ptr,
-                                size_t size)
-{
-#ifdef HOST_WORDS_BIGENDIAN
-
-    size_t i;
-    struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
-
-    virtio_gpu_ctrl_hdr_bswap(hdr);
-
-    i = sizeof(struct virtio_gpu_ctrl_hdr);
-    while (i < size) {
-        le32_to_cpus((uint32_t *)(ptr + i));
-        i = i + sizeof(uint32_t);
-    }
-
-#endif
-}
-
-static void
-virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
-{
-    virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
-    le32_to_cpus(&t2d->r.x);
-    le32_to_cpus(&t2d->r.y);
-    le32_to_cpus(&t2d->r.width);
-    le32_to_cpus(&t2d->r.height);
-    le64_to_cpus(&t2d->offset);
-    le32_to_cpus(&t2d->resource_id);
-    le32_to_cpus(&t2d->padding);
-}
-
 #ifdef CONFIG_VIRGL
 #include <virglrenderer.h>
 #define VIRGL(_g, _virgl, _simple, ...)                     \

include/hw/virtio/virtio-gpu-bswap.h

@@ -0,0 +1,61 @@
+/*
+ * 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.
+ */
+
+#ifndef HW_VIRTIO_GPU_BSWAP_H
+#define HW_VIRTIO_GPU_BSWAP_H
+
+#include "qemu/bswap.h"
+
+static inline void
+virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
+{
+    le32_to_cpus(&hdr->type);
+    le32_to_cpus(&hdr->flags);
+    le64_to_cpus(&hdr->fence_id);
+    le32_to_cpus(&hdr->ctx_id);
+    le32_to_cpus(&hdr->padding);
+}
+
+static inline void
+virtio_gpu_bswap_32(void *ptr, size_t size)
+{
+#ifdef HOST_WORDS_BIGENDIAN
+
+    size_t i;
+    struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
+
+    virtio_gpu_ctrl_hdr_bswap(hdr);
+
+    i = sizeof(struct virtio_gpu_ctrl_hdr);
+    while (i < size) {
+        le32_to_cpus((uint32_t *)(ptr + i));
+        i = i + sizeof(uint32_t);
+    }
+
+#endif
+}
+
+static inline void
+virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
+{
+    virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
+    le32_to_cpus(&t2d->r.x);
+    le32_to_cpus(&t2d->r.y);
+    le32_to_cpus(&t2d->r.width);
+    le32_to_cpus(&t2d->r.height);
+    le64_to_cpus(&t2d->offset);
+    le32_to_cpus(&t2d->resource_id);
+    le32_to_cpus(&t2d->padding);
+}
+
+#endif