From: Chunyan Zhang <zhang.lyra@gmail.com>
To: Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>,
Randy Dunlap <rdunlap@infradead.org>,
iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
Baolin Wang <baolin.wang7@gmail.com>,
linux-kernel@vger.kernel.org, Orson Zhai <orsonzhai@gmail.com>,
Chunyan Zhang <zhang.lyra@gmail.com>,
Sheng Xu <sheng.xu@unisoc.com>,
Kevin Tang <kevin.tang@unisoc.com>,
Chunyan Zhang <chunyan.zhang@unisoc.com>
Subject: [PATCH v5 0/2] Add Unisoc IOMMU basic driver
Date: Fri, 5 Mar 2021 17:32:14 +0800 [thread overview]
Message-ID: <20210305093216.201897-1-zhang.lyra@gmail.com> (raw)
From: Chunyan Zhang <chunyan.zhang@unisoc.com>
Changes since v4 (https://lkml.org/lkml/2021/2/4/85):
* Rebased on v5.12-rc1;
* Dropped using syscon node for mapping registers according to Rob's comments.
Changes since v3 (https://lkml.org/lkml/2021/2/3/161):
* Rebased on iommu/next, and fixed compile error reported by kernel test robot <lkp@intel.com>;
* %s/iommu/IOMMU/ properly in the whole patchset.
Changes since v2 (https://lkml.org/lkml/2021/2/2/106):
* Added a WARN and return 0 if an invalid iova was passed to sprd_iommu_iova_to_phys();
* Changed the name of sprd_iommu_write();
* Revised CONFIG_SPRD_IOMMU help graph in Kconfig.
* Revised comments for the struct sprd_iommu_device;
* Converted to use "GPL" instread of "GPL v2", they are same as license-rules.rst shows.
Changes since v1 (https://lkml.org/lkml/2021/1/21/563):
* Fixed compile errors reported by kernel test robot <lkp@intel.com>.
* Changed to use syscon to get mapped registers for iommu and media devices to avoid double map issue.
* Addressed Robin's comments:
- Added including offset in the returned physical address if the input virtual address isn't page-aligned;
- Added platform_device_put() after calling of_find_device_by_node();
- Removed iommu register offset from driver, it will be defined as the cell of DT reference to syscon phandle;
- Removed multi compatible strings which are not needed;
- Added comments for the function sprd_iommu_clk_enable();
- Added clocks property in bindings;
- Set device_driver.suppress_bind_attrs to disable unbind the devices via sysfs;
- A few trivial fixes.
Changes since RFC v2 (https://lkml.org/lkml/2021/1/8/277):
* Addressed Robin's comments:
- Add COMPILE_TEST support;
- Use DMA allocator for PTE;
- Revised to avoid resource leak issue;
- Added ->iotlb_sync implemented;
- Moved iommu group allocation to probe;
- Changed some function names to make them sprd specific;
* Added support for more iommu instance;
Changes since RFC v1 (https://lkml.org/lkml/2020/12/23/209):
* Rebased on v5.11-rc1;
* Changed sprd-iommu to tristate;
* Removed check for args_count of iommu OF node, since there's no args
for sprd-iommu device node;
* Added another IP version (i.e. vau);
* Removed unnecessary configs selection from CONFIG_SPRD_IOMMU;
* Changed to get zeroed pages.
Chunyan Zhang (2):
dt-bindings: iommu: add bindings for sprd IOMMU
iommu: add Unisoc IOMMU basic driver
.../devicetree/bindings/iommu/sprd,iommu.yaml | 57 ++
drivers/iommu/Kconfig | 12 +
drivers/iommu/Makefile | 1 +
drivers/iommu/sprd-iommu.c | 577 ++++++++++++++++++
4 files changed, 647 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iommu/sprd,iommu.yaml
create mode 100644 drivers/iommu/sprd-iommu.c
--
2.25.1
next reply other threads:[~2021-03-05 9:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 9:32 Chunyan Zhang [this message]
2021-03-05 9:32 ` [PATCH v5 1/2] dt-bindings: iommu: add bindings for sprd IOMMU Chunyan Zhang
2021-03-05 9:32 ` [PATCH v5 2/2] iommu: add Unisoc IOMMU basic driver Chunyan Zhang
2021-03-18 9:51 ` [PATCH v5 0/2] Add " Joerg Roedel
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