On Wed, 16 Jul 2025 03:40:56 PDT (-0700), Sunil V L wrote:
> This series adds support for RISC-V IOMMU on ACPI based platforms.
> RISC-V IO Mapping Table (RIMT) is a new static ACPI table [1] introduced
> to communicate IOMMU information to the OS.
>
> [1] - https://github.com/riscv-non-isa/riscv-acpi-rimt/releases/download/v1.0/rimt-spec.pdf
>
> Changes since v4:
> 1) Rebased to 6.16-rc6
> 2) Addressed Anup's feedback on formatting.
> 3) Added RB tag from Will and Anup.
>
> Changes since v3:
> 1) Rebased to 6.16-rc5
> 2) Addressed Drew's feedback on v3.
> a) Reordered calling rimt_iommu_configure_id().
> b) Removed unnecessary inline.
> c) Added pr_fmt.
> d) Removed redundant rimt_iommu_configure_id() stub.
> 3) Added Drew's RB tag in PATCH 3.
>
> Changes since v2:
> 1) Rebased to 6.16-rc4
> 2) Removed Anup's SOB and link tags added by mistake in v2.
>
> Changes since v1:
> 1) Rebased to v6.16-rc1.
> 2) Dropped ACPICA patch since it is already available in 6.16-rc1.
> 3) Added Rafael's ACK.
> 4) Fixed few issues found by bots.
>
> Sunil V L (3):
> ACPI: RISC-V: Add support for RIMT
> ACPI: scan: Add support for RISC-V in acpi_iommu_configure_id()
> iommu/riscv: Add ACPI support
>
> MAINTAINERS | 1 +
> arch/riscv/Kconfig | 1 +
> drivers/acpi/Kconfig | 4 +
> drivers/acpi/riscv/Kconfig | 7 +
> drivers/acpi/riscv/Makefile | 1 +
> drivers/acpi/riscv/init.c | 2 +
> drivers/acpi/riscv/init.h | 1 +
> drivers/acpi/riscv/rimt.c | 520 +++++++++++++++++++++++++++
> drivers/acpi/scan.c | 4 +
> drivers/iommu/riscv/iommu-platform.c | 17 +-
> drivers/iommu/riscv/iommu.c | 10 +
> include/linux/acpi_rimt.h | 28 ++
Thanks. Anup came to the patchwork meeting this morning and asked me to
pick it up. It only barely touches arch/riscv stuff so I'd figured it
was going somewhere else, but happy to do so. I've picked it up into my
staging tree as
* e5efe466d9bd - (HEAD -> for-next, palmer/for-next) Merge patch series "RISC-V: Add ACPI support for IOMMU" (2 minutes ago) <Palmer Dabbelt>
|\
| * 368ed89f7ac9 - iommu/riscv: Add ACPI support (2 minutes ago) <Sunil V L>
| * 0d7c16d0df92 - ACPI: scan: Add support for RISC-V in acpi_iommu_configure_id() (2 minutes ago) <Sunil V L>
| * ea35561bc965 - ACPI: RISC-V: Add support for RIMT (2 minutes ago) <Sunil V L>
it should show up on for-next assuming it builds and such (it's behind
some fixes, so might take a bit). Happy to do a tag if someone wants,
just let me know...
> 12 files changed, 595 insertions(+), 1 deletion(-)
> create mode 100644 drivers/acpi/riscv/Kconfig
> create mode 100644 drivers/acpi/riscv/rimt.c
> create mode 100644 include/linux/acpi_rimt.h