git.oblomov.eu Git - linux-2.6/blob - arch/sh/include/cpu-sh3/cpu/dma.h

   1 #ifndef __ASM_CPU_SH3_DMA_H
   2 #define __ASM_CPU_SH3_DMA_H
   3
   4
   5 #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
   6     defined(CONFIG_CPU_SUBTYPE_SH7721)
   7 #define SH_DMAC_BASE    0xa4010020
   8 #else
   9 #define SH_DMAC_BASE    0xa4000020
  10 #endif
  11
  12 #if defined(CONFIG_CPU_SUBTYPE_SH7720) || defined(CONFIG_CPU_SUBTYPE_SH7709)
  13 #define DMTE0_IRQ       48
  14 #define DMTE1_IRQ       49
  15 #define DMTE2_IRQ       50
  16 #define DMTE3_IRQ       51
  17 #define DMTE4_IRQ       76
  18 #define DMTE5_IRQ       77
  19 #endif
  20
  21 /* Definitions for the SuperH DMAC */
  22 #define TM_BURST        0x00000020
  23 #define TS_8            0x00000000
  24 #define TS_16           0x00000008
  25 #define TS_32           0x00000010
  26 #define TS_128          0x00000018
  27
  28 #define CHCR_TS_MASK    0x18
  29 #define CHCR_TS_SHIFT   3
  30
  31 #define DMAOR_INIT      DMAOR_DME
  32
  33 /*
  34  * The SuperH DMAC supports a number of transmit sizes, we list them here,
  35  * with their respective values as they appear in the CHCR registers.
  36  */
  37 enum {
  38         XMIT_SZ_8BIT,
  39         XMIT_SZ_16BIT,
  40         XMIT_SZ_32BIT,
  41         XMIT_SZ_128BIT,
  42 };
  43
  44 static unsigned int ts_shift[] __maybe_unused = {
  45         [XMIT_SZ_8BIT]          = 0,
  46         [XMIT_SZ_16BIT]         = 1,
  47         [XMIT_SZ_32BIT]         = 2,
  48         [XMIT_SZ_128BIT]        = 4,
  49 };
  50
  51 #endif /* __ASM_CPU_SH3_DMA_H */