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| author | Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> | 2022-06-02 21:23:46 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-06-06 08:54:33 +0200 |
| commit | 9bf22421dc8a69cade3c994771637e9693ff0216 (patch) | |
| tree | 7a2f56b1d0e68ffaf3dc7715eef2c23dfe6c8942 /arch/arm | |
| parent | virtio: replace arch_has_restricted_virtio_memory_access() (diff) | |
| download | linux-9bf22421dc8a69cade3c994771637e9693ff0216.tar.xz linux-9bf22421dc8a69cade3c994771637e9693ff0216.zip | |
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 <oleksandr_tyshchenko@epam.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
[For arm64]
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/1654197833-25362-2-git-send-email-olekstysh@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/xen/xen-ops.h | 2 | ||||
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 7 |
2 files changed, 4 insertions, 5 deletions
diff --git a/arch/arm/include/asm/xen/xen-ops.h b/arch/arm/include/asm/xen/xen-ops.h new file mode 100644 index 000000000000..7ebb7eb0bd93 --- /dev/null +++ b/arch/arm/include/asm/xen/xen-ops.h @@ -0,0 +1,2 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <xen/arm/xen-ops.h> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 82ffac621854..059cce018570 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -33,7 +33,7 @@ #include <asm/dma-iommu.h> #include <asm/mach/map.h> #include <asm/system_info.h> -#include <xen/swiotlb-xen.h> +#include <asm/xen/xen-ops.h> #include "dma.h" #include "mm.h" @@ -2287,10 +2287,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, set_dma_ops(dev, dma_ops); -#ifdef CONFIG_XEN - if (xen_initial_domain()) - dev->dma_ops = &xen_swiotlb_dma_ops; -#endif + xen_setup_dma_ops(dev); dev->archdata.dma_ops_setup = true; } |