LXR linux/arch/sh/include/asm/dma-register.h

   1/* SPDX-License-Identifier: GPL-2.0
   2 *
   3 * Common header for the legacy SH DMA driver and the new dmaengine driver
   4 *
   5 * extracted from arch/sh/include/asm/dma-sh.h:
   6 *
   7 * Copyright (C) 2000  Takashi YOSHII
   8 * Copyright (C) 2003  Paul Mundt
   9 */
  10#ifndef DMA_REGISTER_H
  11#define DMA_REGISTER_H
  12
  13/* DMA registers */
  14#define SAR     0x00    /* Source Address Register */
  15#define DAR     0x04    /* Destination Address Register */
  16#define TCR     0x08    /* Transfer Count Register */
  17#define CHCR    0x0C    /* Channel Control Register */
  18#define DMAOR   0x40    /* DMA Operation Register */
  19
  20/* DMAOR definitions */
  21#define DMAOR_AE        0x00000004      /* Address Error Flag */
  22#define DMAOR_NMIF      0x00000002
  23#define DMAOR_DME       0x00000001      /* DMA Master Enable */
  24
  25/* Definitions for the SuperH DMAC */
  26#define REQ_L   0x00000000
  27#define REQ_E   0x00080000
  28#define RACK_H  0x00000000
  29#define RACK_L  0x00040000
  30#define ACK_R   0x00000000
  31#define ACK_W   0x00020000
  32#define ACK_H   0x00000000
  33#define ACK_L   0x00010000
  34#define DM_INC  0x00004000      /* Destination addresses are incremented */
  35#define DM_DEC  0x00008000      /* Destination addresses are decremented */
  36#define DM_FIX  0x0000c000      /* Destination address is fixed */
  37#define SM_INC  0x00001000      /* Source addresses are incremented */
  38#define SM_DEC  0x00002000      /* Source addresses are decremented */
  39#define SM_FIX  0x00003000      /* Source address is fixed */
  40#define RS_IN   0x00000200
  41#define RS_OUT  0x00000300
  42#define RS_AUTO 0x00000400      /* Auto Request */
  43#define RS_ERS  0x00000800      /* DMA extended resource selector */
  44#define TS_BLK  0x00000040
  45#define TM_BUR  0x00000020
  46#define CHCR_DE 0x00000001      /* DMA Enable */
  47#define CHCR_TE 0x00000002      /* Transfer End Flag */
  48#define CHCR_IE 0x00000004      /* Interrupt Enable */
  49
  50#endif
  51