Am 12.06.24 um 05:17 schrieb Ethan Chen via:
Support basic functions of IOPMP specification v0.9.1 rapid-k model.
The specification url:
https://github.com/riscv-non-isa/iopmp-spec/releases/tag/v0.9.1
IOPMP check memory access from device is valid or not. This implementation uses
IOMMU to change address space that device access. There are three possible
results of an access: valid, blocked, and stalled(stall is not supported in this
patch).
If an access is valid, target address space is downstream_as.
If an access is blocked, it will go to blocked_io_as. The operation of
blocked_io_as could be a bus error, or it can respond a success with fabricated
data depending on IOPMP ERR_CFG register value.
Signed-off-by: Ethan Chen <etha...@andestech.com>
---
hw/misc/Kconfig | 3 +
hw/misc/meson.build | 1 +
hw/misc/riscv_iopmp.c | 1002 +++++++++++++++++++++++++++++++++
hw/misc/trace-events | 4 +
include/hw/misc/riscv_iopmp.h | 152 +++++
5 files changed, 1162 insertions(+)
create mode 100644 hw/misc/riscv_iopmp.c
create mode 100644 include/hw/misc/riscv_iopmp.h
Should both new files have SPDX license identifiers?
Regards,
Stefan W.
