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SWNote/Linux/Linux_DMA.md
Chear.Huang 7ec4a99cc2 update note
2022-08-17 09:44:56 +08:00

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1 . System Address layout

ARM addressing mapping.

##      |---------------|	0xFFFF FFFF FFFF FFFF
##      | kernel space  |
##		| virtual       |
##		| addressing    |
##      |---------------|	0xFFFF 0000 0000 0000
##      | illegal area  |
##      |----------- ---|	0x0000 FFFF FFFF FFFF
##      | user space    |
##		| virtual       |
##		| addressing    |
##      |---------------|	0x0000 0000 0000 0000

2 . QDMA