include/asm-arm/arch-ebsa285/dma.h

   1 /*
   2  *  linux/include/asm-arm/arch-ebsa285/dma.h
   3  *
   4  *  Architecture DMA routines
   5  *
   6  *  Copyright (C) 1998,1999 Russell King
   7  *  Copyright (C) 1998,1999 Philip Blundell
   8  */
   9 #ifndef __ASM_ARCH_DMA_H
  10 #define __ASM_ARCH_DMA_H
  11
  12 /*
  13  * This is the maximum DMA address that can be DMAd to.
  14  */
  15 #define MAX_DMA_ADDRESS         0xffffffff
  16
  17 /*
  18  * The 21285 has two internal DMA channels; we call these 8 and 9.
  19  * On CATS hardware we have an additional eight ISA dma channels
  20  * numbered 0..7.
  21  */
  22 #define _ISA_DMA(x)             (0+(x))
  23 #define _DC21285_DMA(x)         (8+(x))
  24
  25 #define MAX_DMA_CHANNELS        10
  26
  27 #define DMA_FLOPPY              _ISA_DMA(2)
  28 #define DMA_ISA_CASCADE         _ISA_DMA(4)
  29
  30 #endif /* _ASM_ARCH_DMA_H */