Hi All,
Can somebody simply point me the influence of "CONSISTENT_DMA_SIZE",
"ISA_DMA_THRESHOLD" and "MAX_DMA_ADDRESS" definition in ARM system?
Or any other internet websites explain it?
My ARM system mounts with 64MB DRAM which mapped to physical address 0x0.
And I want to use the first 4MB as the DMA buffer for DMA read/write accessing.
How can i modify the above three definition to implement it?
Or i need extra porting work? Such as implement the "arch_adjust_zone" function.
Thanks for any hints.
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蚊子吵得整晚睡不著，一直叮我，誰能救救我？ http://ksk.search.yahoo.net/index.asp?WT.mc_id=023
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