This series implements 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
When IOPMP is enabled, memory access to system memory from devices and
the CPU will be checked by the IOPMP.
The issue of CPU access to non-CPU address space via IOMMU was previously
mentioned by Jim Shu, who provided a patch[1] to fix it. IOPMP also requires
this patch.
[1] accel/tcg: Store section pointer in CPUTLBEntryFull
https://patchew.org/QEMU/20240612081416.29704-1-jim....@sifive.com/20240612081416.29704-2-jim....@sifive.com/
Changes for v8:
- Support transactions from CPU
- Add an API to set up IOPMP protection for system memory
- Add an API to configure the RISCV CPU to support IOPMP and specify the
CPU's RRID
- Add an API for DMA operation with IOPMP support
- Add SPDX license identifiers to new files (Stefan W.)
- Remove IOPMP PCI interface(pci_setup_iommu) (Zhiwei)
Changes for v7:
- Change the specification version to v0.9.1
- Remove the sps extension
- Remove stall support, transaction information which need requestor device
support.
- Remove iopmp_cascade option for virt machine
- Refine 'addr' range checks switch case (Daniel)
Ethan Chen (8):
memory: Introduce memory region fetch operation
system/physmem: Support IOMMU granularity smaller than TARGET_PAGE
size
target/riscv: Add support for IOPMP
hw/misc/riscv_iopmp: Add RISC-V IOPMP device
hw/misc/riscv_iopmp: Add API to set up IOPMP protection for system
memory
hw/misc/riscv_iopmp: Add API to configure RISCV CPU IOPMP support
hw/misc/riscv_iopmp: Add DMA operation with IOPMP support API
hw/riscv/virt: Add IOPMP support
accel/tcg/cputlb.c | 29 +-
docs/system/riscv/virt.rst | 5 +
hw/misc/Kconfig | 3 +
hw/misc/meson.build | 1 +
hw/misc/riscv_iopmp.c | 1289 +++++++++++++++++++++++++++++++++
hw/misc/trace-events | 3 +
hw/riscv/Kconfig | 1 +
hw/riscv/virt.c | 63 ++
include/exec/memory.h | 30 +
include/hw/misc/riscv_iopmp.h | 173 +++++
include/hw/riscv/virt.h | 5 +-
system/memory.c | 104 +++
system/physmem.c | 4 +
system/trace-events | 2 +
target/riscv/cpu_cfg.h | 2 +
target/riscv/cpu_helper.c | 18 +-
16 files changed, 1722 insertions(+), 10 deletions(-)
create mode 100644 hw/misc/riscv_iopmp.c
create mode 100644 include/hw/misc/riscv_iopmp.h
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2.34.1
