From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
To: "hch@lst.de" <hch@lst.de>,
"robin.murphy@arm.com" <robin.murphy@arm.com>,
"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>,
Diana Madalina Craciun <diana.craciun@nxp.com>,
"davem@davemloft.net" <davem@davemloft.net>,
Madalin Bucur <madalin.bucur@nxp.com>,
Camelia Alexandra Groza <camelia.groza@nxp.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [PATCH v3 2/4] iommu/dma: wire-up new dma map op .get_virt_addr
Date: Wed, 13 Nov 2019 12:24:21 +0000 [thread overview]
Message-ID: <20191113122407.1171-3-laurentiu.tudor@nxp.com> (raw)
In-Reply-To: <20191113122407.1171-1-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 | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index f321279baf9e..98742c1451ce 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1091,6 +1091,18 @@ static unsigned long iommu_dma_get_merge_boundary(struct device *dev)
return (1UL << __ffs(domain->pgsize_bitmap)) - 1;
}
+static void *iommu_dma_get_virt_addr(struct device *dev, dma_addr_t dma_handle)
+{
+ struct iommu_domain *domain = iommu_get_dma_domain(dev);
+ phys_addr_t phys;
+
+ phys = iommu_iova_to_phys(domain, dma_handle);
+ if (phys)
+ return phys_to_virt(phys);
+
+ return NULL;
+}
+
static const struct dma_map_ops iommu_dma_ops = {
.alloc = iommu_dma_alloc,
.free = iommu_dma_free,
@@ -1107,6 +1119,7 @@ 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,
+ .get_virt_addr = iommu_dma_get_virt_addr,
};
/*
--
2.17.1
next prev parent reply other threads:[~2019-11-13 12:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 12:24 [PATCH v3 0/4] dma-mapping: introduce new dma unmap and sync variants Laurentiu Tudor
2019-11-13 12:24 ` [PATCH v3 1/4] dma-mapping: introduce new dma unmap and sync api variants Laurentiu Tudor
2019-11-13 12:24 ` Laurentiu Tudor [this message]
2019-11-13 12:24 ` [PATCH v3 3/4] swiotlb: make new {unmap,sync}_desc dma apis work with swiotlb Laurentiu Tudor
2019-11-13 12:24 ` [PATCH v3 4/4] dpaa2_eth: use new unmap and sync dma api variants Laurentiu Tudor
2019-11-13 20:11 ` [PATCH v3 0/4] dma-mapping: introduce new dma unmap and sync variants David Miller
2019-11-14 11:13 ` Laurentiu Tudor
2019-11-19 14:09 ` Ioana Ciornei
2019-11-21 7:41 ` Christoph Hellwig
2019-12-02 14:58 ` Madalin Bucur
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191113122407.1171-3-laurentiu.tudor@nxp.com \
--to=laurentiu.tudor@nxp.com \
--cc=camelia.groza@nxp.com \
--cc=davem@davemloft.net \
--cc=diana.craciun@nxp.com \
--cc=hch@lst.de \
--cc=ioana.ciornei@nxp.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=leoyang.li@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=madalin.bucur@nxp.com \
--cc=netdev@vger.kernel.org \
--cc=robin.murphy@arm.com \
--cc=ruxandra.radulescu@nxp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).