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C/C++ Source or Header  |  2008-12-24  |  880 b   |  40 lines
  1. #ifndef __ASM_SH_CPU_SH4_DMA_SH7780_H
  2. #define __ASM_SH_CPU_SH4_DMA_SH7780_H
  3.  
  4. #define REQ_HE    0x000000C0
  5. #define REQ_H    0x00000080
  6. #define REQ_LE    0x00000040
  7. #define TM_BURST 0x0000020
  8. #define TS_8    0x00000000
  9. #define TS_16    0x00000008
  10. #define TS_32    0x00000010
  11. #define TS_16BLK    0x00000018
  12. #define TS_32BLK    0x00100000
  13.  
  14. /*
  15.  * The SuperH DMAC supports a number of transmit sizes, we list them here,
  16.  * with their respective values as they appear in the CHCR registers.
  17.  *
  18.  * Defaults to a 64-bit transfer size.
  19.  */
  20. enum {
  21.     XMIT_SZ_8BIT,
  22.     XMIT_SZ_16BIT,
  23.     XMIT_SZ_32BIT,
  24.     XMIT_SZ_128BIT,
  25.     XMIT_SZ_256BIT,
  26. };
  27.  
  28. /*
  29.  * The DMA count is defined as the number of bytes to transfer.
  30.  */
  31. static unsigned int ts_shift[] __maybe_unused = {
  32.     [XMIT_SZ_8BIT]        = 0,
  33.     [XMIT_SZ_16BIT]        = 1,
  34.     [XMIT_SZ_32BIT]        = 2,
  35.     [XMIT_SZ_128BIT]    = 4,
  36.     [XMIT_SZ_256BIT]    = 5,
  37. };
  38.  
  39. #endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */
  40.