diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-09-02 10:44:19 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-09-11 12:43:16 +0200 |
| commit | 8e23c82c68635a8859820bc6feb0fb3798aed943 (patch) | |
| tree | 7e42707e498229b72b89d6f782eef6ddb7051f5e /drivers/xen | |
| parent | 78406ff566ecd72021928217908ca255406bd914 (diff) | |
| download | linux-8e23c82c68635a8859820bc6feb0fb3798aed943.tar.bz2 | |
xen/arm: use dma-noncoherent.h calls for xen-swiotlb cache maintainance
Copy the arm64 code that uses the dma-direct/swiotlb helpers for DMA
on-coherent devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index ae1df496bf38..eee86cc7046b 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -557,11 +557,6 @@ xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs) { -#ifdef CONFIG_ARM - if (xen_get_dma_ops(dev)->mmap) - return xen_get_dma_ops(dev)->mmap(dev, vma, cpu_addr, - dma_addr, size, attrs); -#endif return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, attrs); } @@ -574,21 +569,6 @@ xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t handle, size_t size, unsigned long attrs) { -#ifdef CONFIG_ARM - if (xen_get_dma_ops(dev)->get_sgtable) { -#if 0 - /* - * This check verifies that the page belongs to the current domain and - * is not one mapped from another domain. - * This check is for debug only, and should not go to production build - */ - unsigned long bfn = PHYS_PFN(dma_to_phys(dev, handle)); - BUG_ON (!page_is_ram(bfn)); -#endif - return xen_get_dma_ops(dev)->get_sgtable(dev, sgt, cpu_addr, - handle, size, attrs); - } -#endif return dma_common_get_sgtable(dev, sgt, cpu_addr, handle, size, attrs); } |