Date: Fri, 15 May 2026 21:01:09 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: Ruslan Bukin <br@FreeBSD.org> Cc: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: Re: git: bcecad2c24aa - main - riscv: IOMMU support Message-ID: <o79925o2-n7oo-sp19-9461-n2o01osq27@mnoonqbm.arg> In-Reply-To: <6a02fef9.3c055.3a6526da@gitrepo.freebsd.org>
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On Tue, 12 May 2026, Ruslan Bukin wrote: > The branch main has been updated by br: > > URL: https://cgit.FreeBSD.org/src/commit/?id=bcecad2c24aa500913559c00f1be8b364a3ff150 > > commit bcecad2c24aa500913559c00f1be8b364a3ff150 > Author: Ruslan Bukin <br@FreeBSD.org> > AuthorDate: 2026-05-12 10:09:04 +0000 > Commit: Ruslan Bukin <br@FreeBSD.org> > CommitDate: 2026-05-12 10:11:32 +0000 > > riscv: IOMMU support > > Support for RISC-V IOMMU spec v1.0.1 (ratified) > https://github.com/riscv-non-isa/riscv-iommu > > Supports translation for PCI devices only. > Supports 1 or 2-level device-directory-table (DDT). > Supports SV39 and SV48 virtual memory system (on per-device basis). > Supports both "standard" and "extended" device-context (DC) structure. > Supports "bypass" mode to disable translation for a particular device. > Supports WSI (Wire-Signalled Interrupts) only. > > This includes both PCI-bus and FDT attachment drivers. > > Note in case of PCI-bus attachment, interrupts are not available. In this > case no error report is provided in case of translation fault. Otherwise > interrupts are not needed. > > Differential Revision: https://reviews.freebsd.org/D55922 > --- > sys/conf/files.riscv | 9 + > sys/riscv/conf/GENERIC | 1 + > sys/riscv/include/bus_dma_impl.h | 3 + > sys/riscv/include/iommu.h | 10 + > sys/riscv/iommu/iommu.c | 1351 ++++++++++++++++++++++++++++++++++++++ > sys/riscv/iommu/iommu.h | 359 ++++++++++ > sys/riscv/iommu/iommu_fdt.c | 145 ++++ > sys/riscv/iommu/iommu_frontend.c | 505 ++++++++++++++ > sys/riscv/iommu/iommu_frontend.h | 38 ++ > sys/riscv/iommu/iommu_if.m | 147 +++++ > sys/riscv/iommu/iommu_pci.c | 172 +++++ > sys/riscv/iommu/iommu_pmap.c | 629 ++++++++++++++++++ > sys/riscv/iommu/iommu_pmap.h | 49 ++ > 13 files changed, 3418 insertions(+) There are some accesses to sp_resident_count which are not guarded by INVARIANTS which makes kernel compiles fail. -- Bjoern A. Zeeb r15:7home | help
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