QDMA Debug Flow

Get IP Configuration Details
Collect IP Configuration Parameters

Check Debug Checklist
Check Debug Gotchas
Check QDMA Global Port Descriptions
Check General Debug Checklist
Check Issues/Debug Tips/Questions

Verify Driver Initialization Data/Driver Flow
H2C MM	C2H MM	H2C ST	C2H ST
Review H2C MM Driver Flow	Review C2H MM Driver Flow	Review H2C ST Driver Flow	Review C2H ST Driver Flow
Review dmesg log	Review dmesg log	Review dmesg log	Review dmesg log
Review Context Programming	Review Context Programming	Review Context Programming	Review Context Programming

Descriptor Update
Check Global Error Registers	Check Global Error Registers
Check PIDX Update	Check Software Context
Check Traffic Manager Status Interface for new descriptor	Check Hardware Context
Check Queue Invalid bit in Hardware Context	Check Credit Context

Descriptor Fetch
Check Descriptor Engine Error	Check Software Context
Review Descriptor Fetch Flow	Check Hardware Context
Check if Fetch Credit is enabled or not	Check Credit Context
Check if Descriptor Fetch Pending is enabled	Check Prefetch Context

QDMA Data Transfer - 1 (for all modes)
H2C ST	C2H ST	H2C MM	C2H MM
Check Global Error Registers	Check Global Error Registers	Check Global Error Registers	Check Global Error Registers
H2C ST Engine Error	C2H ST Engine Error	H2C MM Engine Error	C2H MM Engine Error
Review H2C ST Driver Flow	Review C2H Exception Handling	Reiview H2C MM Driver Flow	Review C2H MM Driver Flow
AXI4-Stream H2C Port Descriptions	Review C2H ST Driver Flow	AXI4 Memory Mapped DMA Read Interface Signals	AXI4 Memory Mapped DMA Write Interface Signals
Review C2H/H2C Queue Flow	AXI4-Stream C2H Port Descriptions	Review C2H/H2C Queue Flow	Review C2H/H2C Queue Flow
QDMA Descriptor Credit Input Port Descriptions	AXI4-Stream C2H Completion Port Descriptions	QDMA Descriptor Credit Input Port Descriptions	QDMA Descriptor Credit Input Port Descriptions
QDMA TM Credit Output Port Descriptions	Review Completion Queue Flow	QDMA TM Credit Output Port Descriptions	QDMA TM Credit Output Port Descriptions
Queue Status Ports	Review C2H/H2C Queue Flow	Queue Status Ports	Queue Status Ports
Queue status data	Check AXI4 Stream Status Ports	Queue status data	Queue status data
	QDMA Descriptor Credit Input Port Descriptions
	QDMA TM Credit Output Port Descriptions
	Queue Status Ports
	Queue status data

QDMA Data Transfer- 2 (C2H Stream Only)
C2H Stream - Internal Mode (Always Cache Mode)	Cache Bypass Mode (Only for C2H Stream)	Simple Bypass Mode (Only for C2H Stream)
Check Prefetch Context if Prefetch Enabled		Check C2H Simple Bypass Mode Flow
	Check Prefetch Context if Prefetch Enabled	QDMA C2H Descriptor Bypass Output Port Descriptions
	QDMA C2H-Streaming Cache Bypass Input Port Descriptions
	Check C2H Cache Bypass Mode Flow

QDMA Data Transfer - 3
	H2C MM	C2H MM	H2C ST
Internal Mode	Check H2C Internal Mode Flow	QDMA C2H-MM Descriptor Bypass Input Port Descriptions	Check H2C Internal Mode Flow
Descriptor Bypass Mode	QDMA H2C Descriptor Bypass Output Port Descriptions	QDMA C2H Descriptor Bypass Output Port Descriptions	Check H2C Bypass Mode Flow
	Check H2C Bypass Mode Flow		H2C ST Desc Bypass Output Ports
	QDMA H2C-MM Descriptor Bypass Input Port Descriptions		QDMA H2C-Streaming Bypass Input Port

Status Update
H2C MM	C2H MM	H2C ST	C2H ST
Check AXI MM H2C Writeback Status	Check AXI MM C2H Writeback Status	Check AXI ST H2C Writeback Status Descriptor	Check AXI ST Completion Status