Re: [PATCH v6 10/25] iommu/exynos: Implement an IDENTITY domain
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2023-08-14 12:49:26
Also in:
linux-arm-msm, linux-iommu, linux-mediatek, linux-rockchip, linux-s390, linux-samsung-soc, linux-sunxi, linux-tegra, linuxppc-dev
On Mon, Aug 14, 2023 at 12:52:34PM +0800, Baolu Lu wrote:
On 2023/8/3 8:07, Jason Gunthorpe wrote:quoted
What exynos calls exynos_iommu_detach_device is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. Tested-by: Marek Szyprowski<m.szyprowski@samsung.com> Acked-by: Marek Szyprowski<m.szyprowski@samsung.com> Signed-off-by: Jason Gunthorpe<jgg@nvidia.com> --- drivers/iommu/exynos-iommu.c | 66 +++++++++++++++++------------------- 1 file changed, 32 insertions(+), 34 deletions(-)diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index c275fe71c4db32..5e12b85dfe8705 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c@@ -24,6 +24,7 @@ typedef u32 sysmmu_iova_t; typedef u32 sysmmu_pte_t; +static struct iommu_domain exynos_identity_domain;Is there a conflict between above and below?
No, this is a C forward declaration. Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel