From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Fri, 12 Sep 2014 17:34:51 +0100 Subject: [RFC PATCH v3 3/7] iommu: add new iommu_ops callback for adding an OF device In-Reply-To: <1410539695-29128-1-git-send-email-will.deacon@arm.com> References: <1410539695-29128-1-git-send-email-will.deacon@arm.com> Message-ID: <1410539695-29128-4-git-send-email-will.deacon@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds a new function to the iommu_ops structure to allow an OF device to be added to a specific IOMMU instance using the recently merged generic devicetree binding for IOMMUs. The callback (of_xlate) takes a struct device representing the master and an of_phandle_args representing the IOMMU and the correspondong IDs for the new master. Signed-off-by: Will Deacon --- include/linux/iommu.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 4256f3ce1673..821eb0bd9f6c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -21,6 +21,7 @@ #include #include +#include #include #include @@ -140,6 +141,10 @@ struct iommu_ops { /* Get the numer of window per domain */ u32 (*domain_get_windows)(struct iommu_domain *domain); +#ifdef CONFIG_OF_IOMMU + int (*of_xlate)(struct device *dev, struct of_phandle_args *args); +#endif + unsigned long pgsize_bitmap; }; -- 2.1.0