From: kholk11@gmail.com
To: will@kernel.org
Cc: robin.murphy@arm.com, joro@8bytes.org,
bjorn.andersson@linaro.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, kholk11@gmail.com,
marijns95@gmail.com, konradybcio@gmail.com,
martin.botka1@gmail.com, linux-arm-msm@vger.kernel.org,
phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 7/8] iommu/arm-smmu: Support stream_mapping_reset implementation detail
Date: Sat, 26 Sep 2020 15:00:03 +0200 [thread overview]
Message-ID: <20200926130004.13528-8-kholk11@gmail.com> (raw)
In-Reply-To: <20200926130004.13528-1-kholk11@gmail.com>
From: AngeloGioacchino Del Regno <kholk11@gmail.com>
Some IOMMUs may be in need of overriding the stream mapping reset
function and this is seen on at least some Qualcomm SoCs:
add a stream_mapping_reset function to the implementation details
and call it in the appropriate function.
Signed-off-by: AngeloGioacchino Del Regno <kholk11@gmail.com>
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 5 +++++
drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 8c070c493315..44571873f148 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1656,6 +1656,11 @@ static void arm_smmu_stream_mapping_reset(struct arm_smmu_device *smmu)
{
int i;
+ if (smmu->impl && smmu->impl->stream_mapping_reset) {
+ smmu->impl->stream_mapping_reset(smmu);
+ return;
+ }
+
/*
* Reset stream mapping groups: Initial values mark all SMRn as
* invalid and all S2CRn as bypass unless overridden.
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index 2cd3d126f675..9c045594b8cf 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -387,6 +387,7 @@ struct arm_smmu_impl {
int (*cfg_probe)(struct arm_smmu_device *smmu);
int (*reset)(struct arm_smmu_device *smmu);
int (*init_context)(struct arm_smmu_domain *smmu_domain);
+ void (*stream_mapping_reset)(struct arm_smmu_device *smmu);
void (*test_smr_masks)(struct arm_smmu_device *smmu);
void (*tlb_sync)(struct arm_smmu_device *smmu, int page, int sync,
int status);
--
2.28.0
next prev parent reply other threads:[~2020-09-26 13:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-26 12:59 [PATCH 0/8] Implement firmware quirks for Qualcomm ARM-SMMUv2 kholk11
2020-09-26 12:59 ` [PATCH 1/8] iommu/arm-smmu-qcom: Rename qcom_smmu_impl to qcom_smmu500_impl kholk11
2020-09-26 12:59 ` [PATCH 2/8] iommu/arm-smmu-qcom: Add QC SMMUv2 VA Size quirk for SDM660 kholk11
2020-10-14 15:43 ` Robin Murphy
2020-09-26 12:59 ` [PATCH 3/8] dt-bindings: arm-smmu: add binding for SMMUv2 on Qualcomm SDM660 kholk11
2020-09-29 19:10 ` Rob Herring
2020-09-26 13:00 ` [PATCH 4/8] iommu/arm-smmu: Support test_smr_masks implementation detail deviation kholk11
2020-10-14 15:52 ` Robin Murphy
2020-09-26 13:00 ` [PATCH 5/8] iommu/arm-smmu-qcom: Add test_smr_masks detail to QCOM SMMUv2 kholk11
2020-09-26 13:00 ` [PATCH 6/8] iommu/arm-smmu: Move stream mapping reset to separate function kholk11
2020-10-14 15:56 ` Robin Murphy
2020-09-26 13:00 ` kholk11 [this message]
2020-09-26 13:00 ` [PATCH 8/8] iommu/arm-smmu-qcom: Add stream_mapping_reset detail to QCOM SMMUv2 kholk11
2020-10-14 22:14 ` Bjorn Andersson
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=20200926130004.13528-8-kholk11@gmail.com \
--to=kholk11@gmail.com \
--cc=bjorn.andersson@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=joro@8bytes.org \
--cc=konradybcio@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marijns95@gmail.com \
--cc=martin.botka1@gmail.com \
--cc=phone-devel@vger.kernel.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 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).