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Altera_Forum's avatar
Altera_Forum
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12 years ago

Porting non-mmu code to MMU -- MMU memcpy SEGV

Thanks in Advance. With the non-mmu nios2 our design defined sdram regions that we utilized for buffers in our custom device driver. **** device driver sharedMem = kmalloc( SHARED_MEMSIZE...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Hi,

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I have the device driver open "/dev/myDDriver0" -- which is MAJOR - 240 and Minor 0

I created a node locally in the directory I'm running the test code: mknod node c 204 0 (same major and minor# )

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Same major and minor# ? 240 - 204 ? Sorry, I can't understand your question.

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I'm going to need to have 2 more memory areas and would like to know what that is going to entail

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There are several ways. One is to use different minor numbers, like 0, 1, 2 etc..

Kazu