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This API allows Qemu to set the blob allocated by the Guest as the scanout buffer. If Opengl support is available, then the scanout buffer would be submitted as a dmabuf to the UI; if not, a pixman image is created from the scanout buffer and is submitted to the UI via the display surface. Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com> Message-Id: <20210526231429.1045476-14-vivek.kasireddy@intel.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
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* Virtio GPU Device
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*
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* Copyright Red Hat, Inc. 2013-2014
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*
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* Authors:
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* Dave Airlie <airlied@redhat.com>
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* Gerd Hoffmann <kraxel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_VIRTIO_GPU_BSWAP_H
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#define HW_VIRTIO_GPU_BSWAP_H
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#include "qemu/bswap.h"
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#include "standard-headers/linux/virtio_gpu.h"
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static inline void
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virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
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{
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le32_to_cpus(&hdr->type);
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le32_to_cpus(&hdr->flags);
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le64_to_cpus(&hdr->fence_id);
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le32_to_cpus(&hdr->ctx_id);
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le32_to_cpus(&hdr->padding);
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}
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static inline void
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virtio_gpu_bswap_32(void *ptr, size_t size)
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{
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#ifdef HOST_WORDS_BIGENDIAN
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size_t i;
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struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
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virtio_gpu_ctrl_hdr_bswap(hdr);
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i = sizeof(struct virtio_gpu_ctrl_hdr);
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while (i < size) {
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le32_to_cpus((uint32_t *)(ptr + i));
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i = i + sizeof(uint32_t);
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}
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#endif
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}
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static inline void
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virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
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{
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virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
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le32_to_cpus(&t2d->r.x);
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le32_to_cpus(&t2d->r.y);
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le32_to_cpus(&t2d->r.width);
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le32_to_cpus(&t2d->r.height);
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le64_to_cpus(&t2d->offset);
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le32_to_cpus(&t2d->resource_id);
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le32_to_cpus(&t2d->padding);
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}
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static inline void
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virtio_gpu_create_blob_bswap(struct virtio_gpu_resource_create_blob *cblob)
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{
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virtio_gpu_ctrl_hdr_bswap(&cblob->hdr);
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le32_to_cpus(&cblob->resource_id);
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le32_to_cpus(&cblob->blob_flags);
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le64_to_cpus(&cblob->size);
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}
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static inline void
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virtio_gpu_scanout_blob_bswap(struct virtio_gpu_set_scanout_blob *ssb)
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{
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virtio_gpu_bswap_32(ssb, sizeof(*ssb) - sizeof(ssb->offsets[3]));
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le32_to_cpus(&ssb->offsets[3]);
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}
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#endif
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