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/*

 * linux/include/asm-arm/arch-shark/dma.h

 *

 * by Alexander Schulz

 */

#ifndef __ASM_ARCH_DMA_H

#define __ASM_ARCH_DMA_H

/* Use only the lowest 4MB, nothing else works.

 * The rest is not DMAable. See dev /  .properties

 * in OpenFirmware.

 */

#define MAX_DMA_ADDRESS         0xC0400000

#define MAX_DMA_CHANNELS        8

#define DMA_ISA_CASCADE         4

static inline void __arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)

{

  if (node != 0) return;

  /* Only the first 4 MB (=1024 Pages) are usable for DMA */

  zone_size[1] = zone_size[0] - 1024;

  zone_size[0] = 1024;

  zhole_size[1] = zhole_size[0];

  zhole_size[0] = 0;

}

#define arch_adjust_zones(node,size,holes) __arch_adjust_zones(node,size,holes)

#endif /* _ASM_ARCH_DMA_H */