From 0c54acb8243dfc51a021d108ffef794c89c84f72 Mon Sep 17 00:00:00 2001 From: Tomasz Jeznach Date: Wed, 16 Oct 2024 17:40:27 -0300 Subject: hw/riscv: add RISC-V IOMMU base emulation The RISC-V IOMMU specification is now ratified as-per the RISC-V international process. The latest frozen specifcation can be found at: https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0/riscv-iommu.pdf Add the foundation of the device emulation for RISC-V IOMMU. It includes support for s-stage (sv32, sv39, sv48, sv57 caps) and g-stage (sv32x4, sv39x4, sv48x4, sv57x4 caps). Other capabilities like ATS and DBG support will be added incrementally in the next patches. Co-developed-by: Sebastien Boeuf Signed-off-by: Sebastien Boeuf Signed-off-by: Tomasz Jeznach Signed-off-by: Daniel Henrique Barboza Acked-by: Alistair Francis Reviewed-by: Jason Chien Message-ID: <20241016204038.649340-4-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- include/hw/riscv/iommu.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/hw/riscv/iommu.h (limited to 'include') diff --git a/include/hw/riscv/iommu.h b/include/hw/riscv/iommu.h new file mode 100644 index 0000000..80769a1 --- /dev/null +++ b/include/hw/riscv/iommu.h @@ -0,0 +1,36 @@ +/* + * QEMU emulation of an RISC-V IOMMU + * + * Copyright (C) 2022-2023 Rivos Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef HW_RISCV_IOMMU_H +#define HW_RISCV_IOMMU_H + +#include "qemu/osdep.h" +#include "qom/object.h" + +#define TYPE_RISCV_IOMMU "riscv-iommu" +OBJECT_DECLARE_SIMPLE_TYPE(RISCVIOMMUState, RISCV_IOMMU) +typedef struct RISCVIOMMUState RISCVIOMMUState; + +#define TYPE_RISCV_IOMMU_MEMORY_REGION "riscv-iommu-mr" +typedef struct RISCVIOMMUSpace RISCVIOMMUSpace; + +#define TYPE_RISCV_IOMMU_PCI "riscv-iommu-pci" +OBJECT_DECLARE_SIMPLE_TYPE(RISCVIOMMUStatePci, RISCV_IOMMU_PCI) +typedef struct RISCVIOMMUStatePci RISCVIOMMUStatePci; + +#endif -- cgit v1.1