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Altera_Forum
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13 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
13 years ago

Hi,

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O.K. so I can use minor# 0 for the driver and the interrupt functionality, etc. and use minor# 's 1, 2, 3, ... for my mmap areas?

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Yes, you can request contiguous minor numbers and your mmap function can receive those minor numbers, so you can allocate your memory areas for each....

Kazu