From: will.deacon@arm.com (Will Deacon)
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: Tue, 2 Sep 2014 18:56:23 +0100 [thread overview]
Message-ID: <1409680587-29818-4-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1409680587-29818-1-git-send-email-will.deacon@arm.com>
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);
+#endif
+
unsigned long pgsize_bitmap;
};
--
2.1.0
next prev parent reply other threads:[~2014-09-02 17:56 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 ` Will Deacon [this message]
2014-09-10 11:16 ` [RFC PATCH v2 3/7] iommu: add new iommu_ops callback for adding an OF device Marek Szyprowski
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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