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From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
To: "hch@lst.de" <hch@lst.de>, "joro@8bytes.org" <joro@8bytes.org>,
	Ioana Ciocoi Radulescu <ruxandra.radulescu@nxp.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	Ioana Ciornei <ioana.ciornei@nxp.com>
Cc: Leo Li <leoyang.li@nxp.com>,
	"robin.murphy@arm.com" <robin.murphy@arm.com>,
	Diana Madalina Craciun <diana.craciun@nxp.com>,
	"davem@davemloft.net" <davem@davemloft.net>,
	Madalin-cristian Bucur <madalin.bucur@nxp.com>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [RFC PATCH 2/3] iommu/dma: wire-up new dma op dma_addr_to_phys_addr()
Date: Tue, 22 Oct 2019 12:55:16 +0000	[thread overview]
Message-ID: <20191022125502.12495-3-laurentiu.tudor@nxp.com> (raw)
In-Reply-To: <20191022125502.12495-1-laurentiu.tudor@nxp.com>

From: Laurentiu Tudor <laurentiu.tudor@nxp.com>

Add an implementation of the newly introduced dma map op in the
generic DMA IOMMU generic glue layer and wire it up.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
---
 drivers/iommu/dma-iommu.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index f321279baf9e..0d2856793ecd 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,17 @@ static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
 	return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
 }
 
+static phys_addr_t iommu_dma_dma_addr_to_phys_addr(struct device *dev,
+						   dma_addr_t dma_handle)
+{
+	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
+
+	if (domain)
+		return iommu_iova_to_phys(domain, dma_handle);
+
+	return 0;
+}
+
 static const struct dma_map_ops iommu_dma_ops = {
 	.alloc			= iommu_dma_alloc,
 	.free			= iommu_dma_free,
@@ -1107,6 +1118,7 @@ static const struct dma_map_ops iommu_dma_ops = {
 	.map_resource		= iommu_dma_map_resource,
 	.unmap_resource		= iommu_dma_unmap_resource,
 	.get_merge_boundary	= iommu_dma_get_merge_boundary,
+	.dma_addr_to_phys_addr	= iommu_dma_dma_addr_to_phys_addr,
 };
 
 /*
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
To: "hch@lst.de" <hch@lst.de>, "joro@8bytes.org" <joro@8bytes.org>,
	Ioana Ciocoi Radulescu <ruxandra.radulescu@nxp.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	Ioana Ciornei <ioana.ciornei@nxp.com>
Cc: Madalin-cristian Bucur <madalin.bucur@nxp.com>,
	Leo Li <leoyang.li@nxp.com>,
	"robin.murphy@arm.com" <robin.murphy@arm.com>,
	"davem@davemloft.net" <davem@davemloft.net>
Subject: [RFC PATCH 2/3] iommu/dma: wire-up new dma op dma_addr_to_phys_addr()
Date: Tue, 22 Oct 2019 12:55:16 +0000	[thread overview]
Message-ID: <20191022125502.12495-3-laurentiu.tudor@nxp.com> (raw)
In-Reply-To: <20191022125502.12495-1-laurentiu.tudor@nxp.com>

From: Laurentiu Tudor <laurentiu.tudor@nxp.com>

Add an implementation of the newly introduced dma map op in the
generic DMA IOMMU generic glue layer and wire it up.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
---
 drivers/iommu/dma-iommu.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index f321279baf9e..0d2856793ecd 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,17 @@ static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
 	return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
 }
 
+static phys_addr_t iommu_dma_dma_addr_to_phys_addr(struct device *dev,
+						   dma_addr_t dma_handle)
+{
+	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
+
+	if (domain)
+		return iommu_iova_to_phys(domain, dma_handle);
+
+	return 0;
+}
+
 static const struct dma_map_ops iommu_dma_ops = {
 	.alloc			= iommu_dma_alloc,
 	.free			= iommu_dma_free,
@@ -1107,6 +1118,7 @@ static const struct dma_map_ops iommu_dma_ops = {
 	.map_resource		= iommu_dma_map_resource,
 	.unmap_resource		= iommu_dma_unmap_resource,
 	.get_merge_boundary	= iommu_dma_get_merge_boundary,
+	.dma_addr_to_phys_addr	= iommu_dma_dma_addr_to_phys_addr,
 };
 
 /*
-- 
2.17.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  parent reply	other threads:[~2019-10-22 12:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-22 12:55 [RFC PATCH 0/3] dma-mapping: introduce a new dma api Laurentiu Tudor
2019-10-22 12:55 ` Laurentiu Tudor
2019-10-22 12:55 ` [RFC PATCH 1/3] dma-mapping: introduce a new dma api dma_addr_to_phys_addr() Laurentiu Tudor
2019-10-22 12:55   ` Laurentiu Tudor
2019-10-22 13:25   ` Robin Murphy
2019-10-22 13:25     ` Robin Murphy
2019-10-22 13:53     ` Laurentiu Tudor
2019-10-22 13:53       ` Laurentiu Tudor
2019-10-23 11:53     ` Laurentiu Tudor
2019-10-23 11:53       ` Laurentiu Tudor
2019-10-24  2:01       ` hch
2019-10-24  2:01         ` hch
2019-10-24  7:49         ` Laurentiu Tudor
2019-10-24  7:49           ` Laurentiu Tudor
2019-10-24 11:04           ` Robin Murphy
2019-10-24 11:04             ` Robin Murphy
2019-10-24 11:27             ` Laurentiu Tudor
2019-10-24 11:27               ` Laurentiu Tudor
2019-10-22 12:55 ` Laurentiu Tudor [this message]
2019-10-22 12:55   ` [RFC PATCH 2/3] iommu/dma: wire-up new dma op dma_addr_to_phys_addr() Laurentiu Tudor
2019-10-22 12:55 ` [RFC PATCH 3/3] dpaa2_eth: use dma_addr_to_phys_addr() new dma api Laurentiu Tudor
2019-10-22 12:55   ` Laurentiu Tudor

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