On Wed, Nov 22, 2023 at 3:36 PM Ethan Chen via <qemu-devel@nongnu.org> wrote: > > This series implements IOPMP specification v1.0.0-draft4 rapid-k model. > The specification url: > https://github.com/riscv-non-isa/iopmp-spec/blob/main/riscv_iopmp_specification.pdf > > When IOPMP is enabled, a DMA device ATCDMAC300 is added to RISC-V virt > platform. This DMA device is connected to the IOPMP and has the > functionalities
I don't think we want to add an Andes DMA device to the virt machine. I can't even find the spec for the ATCDMAC300, which isn't great Alistair > required by IOPMP, including: > - Support setup the connection to IOPMP > - Support asynchronous I/O to handle stall transactions > - Send transaction information > > IOPMP takes a transaction which partially match an entry as a partially hit > error. The transaction size is depending on source device, destination device > and bus. > > Source device can send a transaction_info to IOPMP. IOPMP will check partially > hit by transaction_info. If source device does not send a transaction_info, > IOPMP checks information in IOMMU and dose not check partially hit. > > Changes for v4: > > - Add descriptions of IOPMP and ATCDMAC300 > - Refine coding style and comments > - config XILINX_AXI does not include file stream.c but selects config STREAM > instead. > - ATCDMAC300: INT_STATUS is write 1 clear per bit > Rename iopmp_address_sink to transcation_info_sink > - IOPMP: Refine error message and remove unused variable > - VIRT: Document new options > atcdmac300 is only added when iopmp is enabled > serial setting should not be changed > > Ethan Chen (4): > hw/core: Add config stream > Add RISC-V IOPMP support > hw/dma: Add Andes ATCDMAC300 support > hw/riscv/virt: Add IOPMP support > > docs/system/riscv/virt.rst | 11 + > hw/Kconfig | 1 + > hw/core/Kconfig | 3 + > hw/core/meson.build | 2 +- > hw/dma/Kconfig | 4 + > hw/dma/atcdmac300.c | 566 ++++++++++ > hw/dma/meson.build | 1 + > hw/misc/Kconfig | 4 + > hw/misc/meson.build | 1 + > hw/misc/riscv_iopmp.c | 966 ++++++++++++++++++ > hw/riscv/Kconfig | 2 + > hw/riscv/virt.c | 65 ++ > include/hw/dma/atcdmac300.h | 180 ++++ > include/hw/misc/riscv_iopmp.h | 341 +++++++ > .../hw/misc/riscv_iopmp_transaction_info.h | 28 + > include/hw/riscv/virt.h | 10 +- > 16 files changed, 2183 insertions(+), 2 deletions(-) > create mode 100644 hw/dma/atcdmac300.c > create mode 100644 hw/misc/riscv_iopmp.c > create mode 100644 include/hw/dma/atcdmac300.h > create mode 100644 include/hw/misc/riscv_iopmp.h > create mode 100644 include/hw/misc/riscv_iopmp_transaction_info.h > > -- > 2.34.1 > >
