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

   1 /*
   2  * Virtio GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2013-2014
   5  *
   6  * Authors:
   7  *     Dave Airlie <airlied@redhat.com>
   8  *     Gerd Hoffmann <kraxel@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #ifndef HW_VIRTIO_GPU_BSWAP_H
  15 #define HW_VIRTIO_GPU_BSWAP_H
  16
  17 #include "qemu/bswap.h"
  18 #include "standard-headers/linux/virtio_gpu.h"
  19
  20 static inline void
  21 virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
  22 {
  23     le32_to_cpus(&hdr->type);
  24     le32_to_cpus(&hdr->flags);
  25     le64_to_cpus(&hdr->fence_id);
  26     le32_to_cpus(&hdr->ctx_id);
  27 }
  28
  29 static inline void
  30 virtio_gpu_bswap_32(void *ptr, size_t size)
  31 {
  32 #if HOST_BIG_ENDIAN
  33
  34     size_t i;
  35     struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
  36
  37     virtio_gpu_ctrl_hdr_bswap(hdr);
  38
  39     i = sizeof(struct virtio_gpu_ctrl_hdr);
  40     while (i < size) {
  41         le32_to_cpus((uint32_t *)(ptr + i));
  42         i = i + sizeof(uint32_t);
  43     }
  44
  45 #endif
  46 }
  47
  48 static inline void
  49 virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
  50 {
  51     virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
  52     le32_to_cpus(&t2d->r.x);
  53     le32_to_cpus(&t2d->r.y);
  54     le32_to_cpus(&t2d->r.width);
  55     le32_to_cpus(&t2d->r.height);
  56     le64_to_cpus(&t2d->offset);
  57     le32_to_cpus(&t2d->resource_id);
  58     le32_to_cpus(&t2d->padding);
  59 }
  60
  61 static inline void
  62 virtio_gpu_create_blob_bswap(struct virtio_gpu_resource_create_blob *cblob)
  63 {
  64     virtio_gpu_ctrl_hdr_bswap(&cblob->hdr);
  65     le32_to_cpus(&cblob->resource_id);
  66     le32_to_cpus(&cblob->blob_flags);
  67     le64_to_cpus(&cblob->size);
  68 }
  69
  70 static inline void
  71 virtio_gpu_scanout_blob_bswap(struct virtio_gpu_set_scanout_blob *ssb)
  72 {
  73     virtio_gpu_bswap_32(ssb, sizeof(*ssb) - sizeof(ssb->offsets[3]));
  74     le32_to_cpus(&ssb->offsets[3]);
  75 }
  76
  77 #endif