From: "Isaac J. Manjarres" <isaacm@codeaurora.org>
To: iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org
Cc: "Isaac J. Manjarres" <isaacm@codeaurora.org>,
will@kernel.org, robin.murphy@arm.com, pratikp@codeaurora.org
Subject: [RFC PATCH 5/5] iommu/arm-smmu: Implement the unmap_pages IOMMU driver callback
Date: Tue, 30 Mar 2021 20:00:42 -0700 [thread overview]
Message-ID: <20210331030042.13348-6-isaacm@codeaurora.org> (raw)
In-Reply-To: <20210331030042.13348-1-isaacm@codeaurora.org>
Implement the unmap_pages IOMMU driver callback for the ARM
SMMU driver.
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
Suggested-by: Will Deacon <will@kernel.org>
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index d8c6bfde6a61..a65ff92cb6e3 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1225,6 +1225,24 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova,
return ret;
}
+static size_t arm_smmu_unmap_pages(struct iommu_domain *domain, unsigned long iova,
+ size_t pgsize, size_t pgcount,
+ struct iommu_iotlb_gather *gather)
+{
+ struct io_pgtable_ops *ops = to_smmu_domain(domain)->pgtbl_ops;
+ struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
+ size_t ret;
+
+ if (!ops)
+ return 0;
+
+ arm_smmu_rpm_get(smmu);
+ ret = ops->unmap_pages(ops, iova, pgsize, pgcount, gather);
+ arm_smmu_rpm_put(smmu);
+
+ return ret;
+}
+
static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain)
{
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
@@ -1625,6 +1643,7 @@ static struct iommu_ops arm_smmu_ops = {
.attach_dev = arm_smmu_attach_dev,
.map = arm_smmu_map,
.unmap = arm_smmu_unmap,
+ .unmap_pages = arm_smmu_unmap_pages,
.flush_iotlb_all = arm_smmu_flush_iotlb_all,
.iotlb_sync = arm_smmu_iotlb_sync,
.iova_to_phys = arm_smmu_iova_to_phys,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-03-31 3:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 3:00 [RFC PATCH 0/5] Optimization for unmapping iommu mapped buffers Isaac J. Manjarres
2021-03-31 3:00 ` [RFC PATCH 1/5] iommu/io-pgtable: Introduce unmap_pages() as a page table op Isaac J. Manjarres
2021-03-31 3:00 ` [RFC PATCH 2/5] iommu: Add an unmap_pages() op for IOMMU drivers Isaac J. Manjarres
2021-03-31 4:47 ` Lu Baolu
2021-03-31 4:47 ` Lu Baolu
2021-03-31 5:36 ` isaacm
2021-03-31 5:39 ` Lu Baolu
2021-03-31 5:39 ` Lu Baolu
2021-04-02 17:25 ` isaacm
2021-04-03 1:35 ` Lu Baolu
2021-04-03 1:35 ` Lu Baolu
2021-03-31 3:00 ` [RFC PATCH 3/5] iommu: Add support for the unmap_pages IOMMU callback Isaac J. Manjarres
2021-04-01 15:34 ` Robin Murphy
2021-04-01 15:34 ` Robin Murphy
2021-04-01 16:37 ` Will Deacon
2021-04-01 16:37 ` Will Deacon
2021-03-31 3:00 ` [RFC PATCH 4/5] iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages() Isaac J. Manjarres
2021-04-01 17:19 ` Robin Murphy
2021-04-01 17:19 ` Robin Murphy
2021-03-31 3:00 ` Isaac J. Manjarres [this message]
2021-04-01 3:28 ` [RFC PATCH 0/5] Optimization for unmapping iommu mapped buffers chenxiang (M)
2021-04-01 3:28 ` chenxiang (M)
2021-04-01 15:33 ` Robin Murphy
2021-04-01 15:33 ` Robin Murphy
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=20210331030042.13348-6-isaacm@codeaurora.org \
--to=isaacm@codeaurora.org \
--cc=iommu@lists.linux-foundation.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=pratikp@codeaurora.org \
--cc=robin.murphy@arm.com \
--cc=will@kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.