linux.git - Linus' kernel tree

Age	Commit message (Collapse)	Author
2025-01-06	iommu/riscv: Add shutdown function for iommu driver	Xu Lu
	This commit supplies shutdown callback for iommu driver. The shutdown callback resets necessary registers so that newly booted kernel can pass riscv_iommu_init_check() after kexec. Also, the shutdown callback resets iommu mode to bare instead of off so that new kernel can still use PCIE devices even when CONFIG_RISCV_IOMMU is not enabled. Signed-off-by: Xu Lu <luxu.kernel@bytedance.com> Link: https://lore.kernel.org/r/20250103093220.38106-3-luxu.kernel@bytedance.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-10-29	iommu/riscv: Add RISC-V IOMMU PCIe device driver	Tomasz Jeznach
	Introduce device driver for PCIe implementation of RISC-V IOMMU architected hardware. IOMMU hardware and system support for MSI or MSI-X is required by this implementation. Vendor and device identifiers used in this patch matches QEMU implementation of the RISC-V IOMMU PCIe device, from Rivos VID (0x1efd) range allocated by the PCI-SIG. MAINTAINERS \| added iommu-pci.c already covered by matching pattern. Link: https://lore.kernel.org/qemu-devel/20240307160319.675044-1-dbarboza@ventanamicro.com/ Co-developed-by: Nick Kossifidis <mick@ics.forth.gr> Signed-off-by: Nick Kossifidis <mick@ics.forth.gr> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Tomasz Jeznach <tjeznach@rivosinc.com> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Link: https://lore.kernel.org/r/12f3bdbe519ebb7ca482191e7334d38b25b8ae8f.1729059707.git.tjeznach@rivosinc.com Signed-off-by: Joerg Roedel <jroedel@suse.de>