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virtio-gpu: add bswap helpers header

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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>
This commit is contained in:
Marc-André Lureau 2019-05-24 15:09:39 +02:00 committed by Gerd Hoffmann
parent bd2e44fee4
commit ad08e67a96
2 changed files with 62 additions and 42 deletions
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43
hw/display/virtio-gpu.c
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@ -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, ...) \

61
include/hw/virtio/virtio-gpu-bswap.h Normal file
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@ -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