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550.40.07

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This commit is contained in:
Bernhard Stoeckner
2024-01-24 17:51:53 +01:00
parent bb2dac1f20
commit 91676d6628
1411 changed files with 261367 additions and 145959 deletions
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34
kernel-open/nvidia-drm/nvidia-drm-gem-dma-buf.c
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@@ -71,12 +71,42 @@ static int __nv_drm_gem_dma_buf_create_mmap_offset(
static int __nv_drm_gem_dma_buf_mmap(struct nv_drm_gem_object *nv_gem,
struct vm_area_struct *vma)
{
#if defined(NV_LINUX)
struct dma_buf_attachment *attach = nv_gem->base.import_attach;
struct dma_buf *dma_buf = attach->dmabuf;
#endif
struct file *old_file;
int ret;
/* check if buffer supports mmap */
#if defined(NV_BSD)
/*
* Most of the FreeBSD DRM code refers to struct file*, which is actually
* a struct linux_file*. The dmabuf code in FreeBSD is not actually plumbed
* through the same linuxkpi bits it seems (probably so it can be used
* elsewhere), so dma_buf->file really is a native FreeBSD struct file...
*/
if (!nv_gem->base.filp->f_op->mmap)
return -EINVAL;
/* readjust the vma */
get_file(nv_gem->base.filp);
old_file = vma->vm_file;
vma->vm_file = nv_gem->base.filp;
vma->vm_pgoff -= drm_vma_node_start(&nv_gem->base.vma_node);
ret = nv_gem->base.filp->f_op->mmap(nv_gem->base.filp, vma);
if (ret) {
/* restore old parameters on failure */
vma->vm_file = old_file;
vma->vm_pgoff += drm_vma_node_start(&nv_gem->base.vma_node);
fput(nv_gem->base.filp);
} else {
if (old_file)
fput(old_file);
}
#else
if (!dma_buf->file->f_op->mmap)
return -EINVAL;
@@ -84,18 +114,20 @@ static int __nv_drm_gem_dma_buf_mmap(struct nv_drm_gem_object *nv_gem,
get_file(dma_buf->file);
old_file = vma->vm_file;
vma->vm_file = dma_buf->file;
vma->vm_pgoff -= drm_vma_node_start(&nv_gem->base.vma_node);;
vma->vm_pgoff -= drm_vma_node_start(&nv_gem->base.vma_node);
ret = dma_buf->file->f_op->mmap(dma_buf->file, vma);
if (ret) {
/* restore old parameters on failure */
vma->vm_file = old_file;
vma->vm_pgoff += drm_vma_node_start(&nv_gem->base.vma_node);
fput(dma_buf->file);
} else {
if (old_file)
fput(old_file);
}
#endif
return ret;
}