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From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
To: ulf.hansson@linaro.org, hch@lst.de, m.szyprowski@samsung.com,
	robin.murphy@arm.com, joro@8bytes.org, axboe@kernel.dk
Cc: wsa+renesas@sang-engineering.com, linux-mmc@vger.kernel.org,
	iommu@lists.linux-foundation.org, linux-block@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Subject: [PATCH v10 2/4] iommu/dma: Add a new dma_map_ops of get_merge_boundary()
Date: Wed, 28 Aug 2019 21:35:41 +0900	[thread overview]
Message-ID: <1566995743-5614-3-git-send-email-yoshihiro.shimoda.uh@renesas.com> (raw)
In-Reply-To: <1566995743-5614-1-git-send-email-yoshihiro.shimoda.uh@renesas.com>

This patch adds a new dma_map_ops of get_merge_boundary() to
expose the DMA merge boundary if the domain type is IOMMU_DOMAIN_DMA.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/dma-iommu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index de68b4a..ad861bd 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,13 @@ static int iommu_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 	return ret;
 }
 
+static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
+{
+	struct iommu_domain *domain = iommu_get_dma_domain(dev);
+
+	return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
+}
+
 static const struct dma_map_ops iommu_dma_ops = {
 	.alloc			= iommu_dma_alloc,
 	.free			= iommu_dma_free,
@@ -1106,6 +1113,7 @@ static const struct dma_map_ops iommu_dma_ops = {
 	.sync_sg_for_device	= iommu_dma_sync_sg_for_device,
 	.map_resource		= iommu_dma_map_resource,
 	.unmap_resource		= iommu_dma_unmap_resource,
+	.get_merge_boundary	= iommu_dma_get_merge_boundary,
 };
 
 /*
-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>
To: ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	hch-jcswGhMUV9g@public.gmane.org,
	m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	robin.murphy-5wv7dgnIgG8@public.gmane.org,
	joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
	axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org
Cc: linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: [PATCH v10 2/4] iommu/dma: Add a new dma_map_ops of get_merge_boundary()
Date: Wed, 28 Aug 2019 21:35:41 +0900	[thread overview]
Message-ID: <1566995743-5614-3-git-send-email-yoshihiro.shimoda.uh@renesas.com> (raw)
In-Reply-To: <1566995743-5614-1-git-send-email-yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>

This patch adds a new dma_map_ops of get_merge_boundary() to
expose the DMA merge boundary if the domain type is IOMMU_DOMAIN_DMA.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>
Reviewed-by: Simon Horman <horms+renesas-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>
Acked-by: Joerg Roedel <jroedel-l3A5Bk7waGM@public.gmane.org>
---
 drivers/iommu/dma-iommu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index de68b4a..ad861bd 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,13 @@ static int iommu_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 	return ret;
 }
 
+static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
+{
+	struct iommu_domain *domain = iommu_get_dma_domain(dev);
+
+	return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
+}
+
 static const struct dma_map_ops iommu_dma_ops = {
 	.alloc			= iommu_dma_alloc,
 	.free			= iommu_dma_free,
@@ -1106,6 +1113,7 @@ static const struct dma_map_ops iommu_dma_ops = {
 	.sync_sg_for_device	= iommu_dma_sync_sg_for_device,
 	.map_resource		= iommu_dma_map_resource,
 	.unmap_resource		= iommu_dma_unmap_resource,
+	.get_merge_boundary	= iommu_dma_get_merge_boundary,
 };
 
 /*
-- 
2.7.4

WARNING: multiple messages have this Message-ID (diff)
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
To: ulf.hansson@linaro.org, hch@lst.de, m.szyprowski@samsung.com,
	robin.murphy@arm.com, joro@8bytes.org, axboe@kernel.dk
Cc: linux-renesas-soc@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-block@vger.kernel.org, wsa+renesas@sang-engineering.com,
	iommu@lists.linux-foundation.org
Subject: [PATCH v10 2/4] iommu/dma: Add a new dma_map_ops of get_merge_boundary()
Date: Wed, 28 Aug 2019 21:35:41 +0900	[thread overview]
Message-ID: <1566995743-5614-3-git-send-email-yoshihiro.shimoda.uh@renesas.com> (raw)
In-Reply-To: <1566995743-5614-1-git-send-email-yoshihiro.shimoda.uh@renesas.com>

This patch adds a new dma_map_ops of get_merge_boundary() to
expose the DMA merge boundary if the domain type is IOMMU_DOMAIN_DMA.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/dma-iommu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index de68b4a..ad861bd 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,13 @@ static int iommu_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 	return ret;
 }
 
+static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
+{
+	struct iommu_domain *domain = iommu_get_dma_domain(dev);
+
+	return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
+}
+
 static const struct dma_map_ops iommu_dma_ops = {
 	.alloc			= iommu_dma_alloc,
 	.free			= iommu_dma_free,
@@ -1106,6 +1113,7 @@ static const struct dma_map_ops iommu_dma_ops = {
 	.sync_sg_for_device	= iommu_dma_sync_sg_for_device,
 	.map_resource		= iommu_dma_map_resource,
 	.unmap_resource		= iommu_dma_unmap_resource,
+	.get_merge_boundary	= iommu_dma_get_merge_boundary,
 };
 
 /*
-- 
2.7.4

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

  parent reply	other threads:[~2019-08-28 12:37 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28 12:35 [PATCH v10 0/4] treewide: improve R-Car SDHI performance Yoshihiro Shimoda
2019-08-28 12:35 ` Yoshihiro Shimoda
2019-08-28 12:35 ` Yoshihiro Shimoda
2019-08-28 12:35 ` [PATCH v10 1/4] dma: Introduce dma_get_merge_boundary() Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-08-28 12:35 ` Yoshihiro Shimoda [this message]
2019-08-28 12:35   ` [PATCH v10 2/4] iommu/dma: Add a new dma_map_ops of get_merge_boundary() Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-08-28 12:35 ` [PATCH v10 3/4] block: add a helper function to merge the segments Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-09-02 21:47   ` Jens Axboe
2019-09-02 21:47     ` Jens Axboe
2019-09-02 21:47     ` Jens Axboe
2019-09-03  4:59     ` Yoshihiro Shimoda
2019-09-03  4:59       ` Yoshihiro Shimoda
2019-09-03  4:59       ` Yoshihiro Shimoda
2019-09-03  6:33       ` hch
2019-09-03  6:33         ` hch
2019-09-03  6:33         ` hch-jcswGhMUV9g
2019-09-03  6:42         ` Yoshihiro Shimoda
2019-09-03  6:42           ` Yoshihiro Shimoda
2019-09-03  6:42           ` Yoshihiro Shimoda
2019-08-28 12:35 ` [PATCH v10 4/4] mmc: queue: Use bigger segments if DMA MAP layer can " Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda
2019-08-28 12:35   ` Yoshihiro Shimoda

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