photon.pcie.dma

experimental

v0.9.0

Author: Photon Interconnects

License: Apache-2.0

PCIe Gen3 DMA engine with scatter-gather support. Experimental release targeting high-bandwidth data transfer applications.

Interfaces

Name	Type	Role	Width
pcie	PCIe Gen3 x8	endpoint	256
m_axi	AXI4	master	512

Parameters

Name	Type	Default	Constraints
NUM_CHANNELS	integer	4	1-8
MAX_BURST	integer	256	64, 128, 256
DESC_FIFO_DEPTH	integer	64	16-256

Compatibility

Clock Domains

PCIe clock (250 MHz)
User clock (configurable)

Reset Semantics

PCIe warm reset compatible

Tool Support

Vivado 2023.1+

Verification

Tests

Basic DMA transfers
Scatter-gather
MSI-X interrupts

Simulators

Questa

Coverage

72% line coverage

Build Proof

Target	Tool	Status	Fmax	Resources
Xilinx Alveo U250	Vivado 2023.2	Pass	250 MHz	45,200 LUTs
Xilinx VCU118	Vivado 2023.2	Fail	-	-

Manifest

ip.yaml

name: photon.pcie.dma
version: 0.9.0
license: Apache-2.0
author: Photon Interconnects

description: >
  PCIe Gen3 DMA engine with scatter-gather
  support. Experimental release.

interfaces:
  pcie:
    type: pcie-gen3
    role: endpoint
    lanes: 8
  m_axi:
    type: axi4
    role: master
    width: 512

parameters:
  NUM_CHANNELS:
    type: integer
    default: 4
    range: [1, 8]
  MAX_BURST:
    type: integer
    default: 256
    values: [64, 128, 256]

targets:
  - vivado