From: m.szyprowski@samsung•com (Marek Szyprowski)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC PATCH v2 3/7] iommu: add new iommu_ops callback for adding an OF device
Date: Wed, 10 Sep 2014 13:16:06 +0200 [thread overview]
Message-ID: <541032F6.1090809@samsung.com> (raw)
In-Reply-To: <1409680587-29818-4-git-send-email-will.deacon@arm.com>
Hello,
On 2014-09-02 19:56, Will Deacon wrote:
> 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 <will.deacon@arm•com>
> ---
> include/linux/iommu.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index fdddb14cd8f5..3e766b85daa3 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -21,6 +21,7 @@
>
> #include <linux/errno.h>
> #include <linux/err.h>
> +#include <linux/of.h>
> #include <linux/types.h>
> #include <trace/events/iommu.h>
>
> @@ -136,6 +137,10 @@ 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);
If I understand correctly how it is designed to work, then it should be:
struct iommu_data *(*of_xlate)(struct device *dev, struct
of_phandle_args *args);
> +#endif
> +
> unsigned long pgsize_bitmap;
> };
>
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
next prev parent reply other threads:[~2014-09-10 11:16 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 17:56 [RFC PATCH v2 0/7] Introduce automatic DMA configuration for IOMMU masters Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 1/7] iommu: provide early initialisation hook for IOMMU drivers Will Deacon
2014-09-10 11:29 ` Marek Szyprowski
2014-09-02 17:56 ` [RFC PATCH v2 2/7] dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops Will Deacon
2014-09-05 15:37 ` Grygorii Strashko
2014-09-08 10:31 ` Will Deacon
2014-09-09 14:15 ` Grygorii Strashko
2014-09-02 17:56 ` [RFC PATCH v2 3/7] iommu: add new iommu_ops callback for adding an OF device Will Deacon
2014-09-10 11:16 ` Marek Szyprowski [this message]
2014-09-10 11:22 ` Will Deacon
2014-09-10 11:33 ` Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 4/7] iommu: provide helper function to configure an IOMMU for an of master Will Deacon
2014-09-02 19:10 ` Arnd Bergmann
2014-09-04 11:26 ` Will Deacon
2014-09-04 11:59 ` Arnd Bergmann
2014-09-04 12:28 ` Will Deacon
2014-09-10 13:01 ` Laurent Pinchart
2014-09-10 13:06 ` Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 5/7] dma-mapping: detect and configure IOMMU in of_dma_configure Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 6/7] arm: call iommu_init before of_platform_populate Will Deacon
2014-09-02 18:13 ` Arnd Bergmann
2014-09-02 17:56 ` [RFC PATCH v2 7/7] arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops Will Deacon
2014-09-02 18:14 ` Arnd Bergmann
2014-09-02 19:11 ` [RFC PATCH v2 0/7] Introduce automatic DMA configuration for IOMMU masters Arnd Bergmann
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