Device configuration structure, part of DmaConfig. More...

#include <svc.h>

Data Fields
s8	deviceId
	DMA device ID.

s8	allowedAlignments
	Mask of allowed access alignments (8, 4, 2, 1).

s16	burstSize
	Number of bytes transferred in a burst loop. Can be 0 (in which case the max allowed alignment is used as unit).

s16	transferSize
	Number of bytes transferred in a "transfer" loop (made of burst loops).

s16	burstStride
	Burst loop stride, can be <= 0.

s16	transferStride
	"Transfer" loop stride, can be <= 0.

Detailed Description

Device configuration structure, part of DmaConfig.

Note

if (and only if) src/dst is a device, then src/dst won't be auto-incremented.
the kernel uses DMAMOV instead of DMAADNH, when having to decrement (possibly working around an erratum); this forces all loops to be unrolled – you need to keep that in mind when using negative increments, as the kernel uses a limit of 100 DMA instruction bytes per channel.

The documentation for this struct was generated from the following file:

Data Fields