From: joro@8bytes•org (Joerg Roedel)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v5 3/3] arm64: Hook up IOMMU dma_ops
Date: Fri, 7 Aug 2015 10:55:17 +0200 [thread overview]
Message-ID: <20150807085516.GW14980@8bytes.org> (raw)
In-Reply-To: <caecbce93dd4870995a000bebc8f58d1ca7e551e.1438362603.git.robin.murphy@arm.com>
On Fri, Jul 31, 2015 at 06:18:29PM +0100, Robin Murphy wrote:
> +void arch_teardown_dma_ops(struct device *dev)
> +{
> + struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
> +
> + if (domain) {
> + iommu_detach_device(domain, dev);
> + if (domain->type & __IOMMU_DOMAIN_ARM64_IOVA)
> + iommu_put_dma_cookie(domain);
> + if (domain->type & __IOMMU_DOMAIN_ARM64)
> + iommu_domain_free(domain);
> + dev->archdata.dma_ops = NULL;
> + }
> +}
When is this called? In case a device gets removed the IOMMU core and
driver should take care of destroying the domain, at least when its a
default-domain. This is part of the iommu-group handling.
Joerg
next prev parent reply other threads:[~2015-08-07 8:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-31 17:18 [PATCH v5 0/3] arm64: IOMMU-backed DMA mapping Robin Murphy
2015-07-31 17:18 ` [PATCH v5 1/3] iommu: Implement common IOMMU ops for " Robin Murphy
2015-08-03 17:40 ` Catalin Marinas
2015-08-06 15:23 ` Will Deacon
2015-08-06 17:54 ` joro at 8bytes.org
2015-08-07 8:42 ` Joerg Roedel
2015-08-07 13:38 ` Robin Murphy
2015-08-11 9:37 ` Joerg Roedel
2015-08-11 13:31 ` Robin Murphy
2015-07-31 17:18 ` [PATCH v5 2/3] arm64: Add IOMMU dma_ops Robin Murphy
2015-08-03 17:33 ` Catalin Marinas
2015-08-07 8:52 ` Joerg Roedel
2015-08-07 15:27 ` Robin Murphy
2015-08-11 9:49 ` Joerg Roedel
2015-08-11 20:15 ` Robin Murphy
2015-09-22 17:12 ` Daniel Kurtz
2015-09-22 18:11 ` Robin Murphy
2015-07-31 17:18 ` [PATCH v5 3/3] arm64: Hook up " Robin Murphy
2015-08-07 8:55 ` Joerg Roedel [this message]
2015-08-26 6:19 ` [PATCH v5 0/3] arm64: IOMMU-backed DMA mapping Yong Wu
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=20150807085516.GW14980@8bytes.org \
--to=joro@8bytes$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
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