vfio/fsl-mc: Map the VFIO region according to the flags received from mc firmware
There are some VFIO regions which are cacheable (QMAN CENA region). These regions should be mapped cacheable. Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
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@ -106,6 +106,7 @@ static int vfio_fsl_mc_regions_init(struct vfio_fsl_mc_device *vdev)
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vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
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if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY))
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vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE;
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vdev->regions[i].type = mc_dev->regions[i].flags & IORESOURCE_BITS;
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}
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vdev->num_regions = mc_dev->obj_desc.region_count;
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@ -451,7 +452,12 @@ static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,
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if (region.size < PAGE_SIZE || base + size > region.size)
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return -EINVAL;
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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if (region.type & DPRC_REGION_CACHEABLE) {
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if (!(region.type & DPRC_REGION_SHAREABLE))
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vma->vm_page_prot = pgprot_cached_ns(vma->vm_page_prot);
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} else
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;
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return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
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