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hw/riscv/riscv-iommu: implement reset protocol

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Add a riscv_iommu_reset() helper in the base emulation code that
implements the expected reset behavior as defined by the riscv-iommu
spec.

Devices can then use this helper in their own reset callbacks.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241106133407.604587-7-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Daniel Henrique Barboza 2024-11-06 10:34:06 -03:00 • committed by Alistair Francis
parent 01c1caa9d1
commit 9afd26715e
6 changed files with 82 additions and 2 deletions
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6
include/hw/riscv/iommu.h
View file

@ -30,12 +30,14 @@ typedef struct RISCVIOMMUState RISCVIOMMUState;
typedef struct RISCVIOMMUSpace RISCVIOMMUSpace;
#define TYPE_RISCV_IOMMU_PCI "riscv-iommu-pci"
OBJECT_DECLARE_SIMPLE_TYPE(RISCVIOMMUStatePci, RISCV_IOMMU_PCI)
OBJECT_DECLARE_TYPE(RISCVIOMMUStatePci, RISCVIOMMUPciClass, RISCV_IOMMU_PCI)
typedef struct RISCVIOMMUStatePci RISCVIOMMUStatePci;
typedef struct RISCVIOMMUPciClass RISCVIOMMUPciClass;
#define TYPE_RISCV_IOMMU_SYS "riscv-iommu-device"
OBJECT_DECLARE_SIMPLE_TYPE(RISCVIOMMUStateSys, RISCV_IOMMU_SYS)
OBJECT_DECLARE_TYPE(RISCVIOMMUStateSys, RISCVIOMMUSysClass, RISCV_IOMMU_SYS)
typedef struct RISCVIOMMUStateSys RISCVIOMMUStateSys;
typedef struct RISCVIOMMUSysClass RISCVIOMMUSysClass;
#define FDT_IRQ_TYPE_EDGE_LOW 1