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Altera_Forum
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14 years ago

Chaining DMA Scatter-Gather mode problems (SG-DMA)

Hey guys, I got some problems in the Chaining DMA (CDMA) SG-DMA mode. Based on the source code of the Altera PCI-E DEMO program, I am using WinDriver to develop the application. When tran...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

1. i use func of "WDC_DMASGBufLock"(jungo-driver api) to decided descriptor parameters(descriptor numbers & data physical addr), but i can't known how this func does?

2.which has enabled memory content editor? what does it mean?

3.i use "WDC_DMASyncCpu"(jungo-driver api) to flush the cpu catches

could you give me more information or suggestions?