From 9bf22421dc8a69cade3c994771637e9693ff0216 Mon Sep 17 00:00:00 2001 From: Oleksandr Tyshchenko Date: Thu, 2 Jun 2022 22:23:46 +0300 Subject: arm/xen: Introduce xen_setup_dma_ops() This patch introduces new helper and places it in new header. The helper's purpose is to assign any Xen specific DMA ops in a single place. For now, we deal with xen-swiotlb DMA ops only. The one of the subsequent commits in current series will add xen-grant DMA ops case. Also re-use the xen_swiotlb_detect() check on Arm32. Signed-off-by: Oleksandr Tyshchenko Reviewed-by: Stefano Stabellini [For arm64] Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/1654197833-25362-2-git-send-email-olekstysh@gmail.com Signed-off-by: Juergen Gross --- include/xen/arm/xen-ops.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 include/xen/arm/xen-ops.h (limited to 'include/xen') diff --git a/include/xen/arm/xen-ops.h b/include/xen/arm/xen-ops.h new file mode 100644 index 000000000000..288deb1c3ac9 --- /dev/null +++ b/include/xen/arm/xen-ops.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ARM_XEN_OPS_H +#define _ASM_ARM_XEN_OPS_H + +#include + +static inline void xen_setup_dma_ops(struct device *dev) +{ +#ifdef CONFIG_XEN + if (xen_swiotlb_detect()) + dev->dma_ops = &xen_swiotlb_dma_ops; +#endif +} + +#endif /* _ASM_ARM_XEN_OPS_H */ -- cgit v1.2.3