From: Nicolin Chen <nicolinc@nvidia.com>
To: <will@kernel.org>, <robin.murphy@arm.com>, <joro@8bytes.org>
Cc: <nicoleotsuka@gmail.com>, <vdumpa@nvidia.com>,
<thierry.reding@gmail.com>, <linux-tegra@vger.kernel.org>,
<nwatterson@nvidia.com>, <Jonathan.Cameron@huawei.com>,
<jean-philippe@linaro.org>, <song.bao.hua@hisilicon.com>,
<eric.auger@redhat.com>, <thunder.leizhen@huawei.com>,
<yuzenghui@huawei.com>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<iommu@lists.linux-foundation.org>
Subject: [RFC][Patch v1 0/2] iommu/arm-smmu-v3: Add NVIDIA implementation
Date: Fri, 23 Jul 2021 12:31:38 -0700 [thread overview]
Message-ID: <20210723193140.9690-1-nicolinc@nvidia.com> (raw)
From: Nicolin Chen <nicoleotsuka@gmail.com>
The SMMUv3 devices implemented in the Grace SoC support NVIDIA's custom
CMDQ-Virtualization (CMDQV) hardware. Like the new ECMDQ feature first
introduced in the ARM SMMUv3.3 specification, CMDQV adds multiple VCMDQ
interfaces to supplement the single architected SMMU_CMDQ in an effort
to reduce contention.
This patch series adds CMDQV support to the arm-smmu-v3 driver by first
borrowing the implementation infrastructure from the arm-smmu driver.
The NVIDIA implementation is then introduced along with hooks allowing
implmentations to specify custom issue_cmdlist methods. Additionally,
the original issue_cmdlist and supporting methods in the arm-smmu-v3
driver are reworked to support alternative CMDQs.
[ nicolinc: this v1 is more of base changes for CMDQV driver; while I
am still integrating incremental features based on VFIO mdev, I sent
these two out in order to collect comments and suggestions to see if
the overall structure is promising. I will add more changes in v2 or
later versions for more detailed implementations. Thank you! ]
Nate Watterson (2):
iommu/arm-smmu-v3: Add implementation infrastructure
iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw
MAINTAINERS | 2 +
drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +-
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c | 15 +
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 71 +--
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 15 +
.../iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c | 425 ++++++++++++++++++
6 files changed, 503 insertions(+), 27 deletions(-)
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
create mode 100644 drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c
--
2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Nicolin Chen via iommu <iommu@lists.linux-foundation.org>
To: <will@kernel.org>, <robin.murphy@arm.com>, <joro@8bytes.org>
Cc: jean-philippe@linaro.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, thierry.reding@gmail.com,
linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [RFC][Patch v1 0/2] iommu/arm-smmu-v3: Add NVIDIA implementation
Date: Fri, 23 Jul 2021 12:31:38 -0700 [thread overview]
Message-ID: <20210723193140.9690-1-nicolinc@nvidia.com> (raw)
From: Nicolin Chen <nicoleotsuka@gmail.com>
The SMMUv3 devices implemented in the Grace SoC support NVIDIA's custom
CMDQ-Virtualization (CMDQV) hardware. Like the new ECMDQ feature first
introduced in the ARM SMMUv3.3 specification, CMDQV adds multiple VCMDQ
interfaces to supplement the single architected SMMU_CMDQ in an effort
to reduce contention.
This patch series adds CMDQV support to the arm-smmu-v3 driver by first
borrowing the implementation infrastructure from the arm-smmu driver.
The NVIDIA implementation is then introduced along with hooks allowing
implmentations to specify custom issue_cmdlist methods. Additionally,
the original issue_cmdlist and supporting methods in the arm-smmu-v3
driver are reworked to support alternative CMDQs.
[ nicolinc: this v1 is more of base changes for CMDQV driver; while I
am still integrating incremental features based on VFIO mdev, I sent
these two out in order to collect comments and suggestions to see if
the overall structure is promising. I will add more changes in v2 or
later versions for more detailed implementations. Thank you! ]
Nate Watterson (2):
iommu/arm-smmu-v3: Add implementation infrastructure
iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw
MAINTAINERS | 2 +
drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +-
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c | 15 +
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 71 +--
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 15 +
.../iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c | 425 ++++++++++++++++++
6 files changed, 503 insertions(+), 27 deletions(-)
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
create mode 100644 drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c
--
2.17.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Nicolin Chen <nicolinc@nvidia.com>
To: <will@kernel.org>, <robin.murphy@arm.com>, <joro@8bytes.org>
Cc: song.bao.hua@hisilicon.com, jean-philippe@linaro.org,
nwatterson@nvidia.com, thunder.leizhen@huawei.com,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
yuzenghui@huawei.com, nicoleotsuka@gmail.com,
eric.auger@redhat.com, thierry.reding@gmail.com,
Jonathan.Cameron@huawei.com, linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [RFC][Patch v1 0/2] iommu/arm-smmu-v3: Add NVIDIA implementation
Date: Fri, 23 Jul 2021 12:31:38 -0700 [thread overview]
Message-ID: <20210723193140.9690-1-nicolinc@nvidia.com> (raw)
From: Nicolin Chen <nicoleotsuka@gmail.com>
The SMMUv3 devices implemented in the Grace SoC support NVIDIA's custom
CMDQ-Virtualization (CMDQV) hardware. Like the new ECMDQ feature first
introduced in the ARM SMMUv3.3 specification, CMDQV adds multiple VCMDQ
interfaces to supplement the single architected SMMU_CMDQ in an effort
to reduce contention.
This patch series adds CMDQV support to the arm-smmu-v3 driver by first
borrowing the implementation infrastructure from the arm-smmu driver.
The NVIDIA implementation is then introduced along with hooks allowing
implmentations to specify custom issue_cmdlist methods. Additionally,
the original issue_cmdlist and supporting methods in the arm-smmu-v3
driver are reworked to support alternative CMDQs.
[ nicolinc: this v1 is more of base changes for CMDQV driver; while I
am still integrating incremental features based on VFIO mdev, I sent
these two out in order to collect comments and suggestions to see if
the overall structure is promising. I will add more changes in v2 or
later versions for more detailed implementations. Thank you! ]
Nate Watterson (2):
iommu/arm-smmu-v3: Add implementation infrastructure
iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw
MAINTAINERS | 2 +
drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +-
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c | 15 +
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 71 +--
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 15 +
.../iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c | 425 ++++++++++++++++++
6 files changed, 503 insertions(+), 27 deletions(-)
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-impl.c
create mode 100644 drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-07-23 19:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-23 19:31 Nicolin Chen [this message]
2021-07-23 19:31 ` [RFC][Patch v1 0/2] iommu/arm-smmu-v3: Add NVIDIA implementation Nicolin Chen
2021-07-23 19:31 ` Nicolin Chen via iommu
2021-07-23 19:31 ` [RFC][Patch v1 1/2] iommu/arm-smmu-v3: Add implementation infrastructure Nicolin Chen
2021-07-23 19:31 ` Nicolin Chen
2021-07-23 19:31 ` Nicolin Chen via iommu
2021-07-23 19:31 ` [RFC][Patch v1 2/2] iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw Nicolin Chen
2021-07-23 19:31 ` Nicolin Chen
2021-07-23 19:31 ` Nicolin Chen via iommu
2021-07-24 0:55 ` kernel test robot
2021-07-24 2:00 ` kernel test robot
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