include/asm-sh/cpu-sh3/dma.h

   1 #ifndef __ASM_CPU_SH3_DMA_H
   2 #define __ASM_CPU_SH3_DMA_H
   3
   4 #define SH_DMAC_BASE    0xa4000020
   5
   6 /* Definitions for the SuperH DMAC */
   7 #define TM_BURST        0x00000020
   8 #define TS_8            0x00000000
   9 #define TS_16           0x00000008
  10 #define TS_32           0x00000010
  11 #define TS_128          0x00000018
  12
  13 #define CHCR_TS_MASK    0x18
  14 #define CHCR_TS_SHIFT   3
  15
  16 #define DMAOR_INIT      DMAOR_DME
  17
  18 /*
  19  * The SuperH DMAC supports a number of transmit sizes, we list them here,
  20  * with their respective values as they appear in the CHCR registers.
  21  */
  22 enum {
  23         XMIT_SZ_8BIT,
  24         XMIT_SZ_16BIT,
  25         XMIT_SZ_32BIT,
  26         XMIT_SZ_128BIT,
  27 };
  28
  29 static unsigned int ts_shift[] __attribute__ ((used)) = {
  30         [XMIT_SZ_8BIT]          = 0,
  31         [XMIT_SZ_16BIT]         = 1,
  32         [XMIT_SZ_32BIT]         = 2,
  33         [XMIT_SZ_128BIT]        = 4,
  34 };
  35
  36 #endif /* __ASM_CPU_SH3_DMA_H */