include/asm-arm/arch-moxacpu/apb_dma.h

   1 /* apb_dma.h */
   2 #ifndef _APB_DMA_H_
   3 #define _APB_DMA_H_
   4
   5 #define APBDMA_DMA_CHAN_BASE           0x80
   6 #define APBDMA_DMA_SRC_0x0             0x0
   7 #define APBDMA_DMA_DEST_0x4            0x4
   8 #define APBDMA_DMA_CYCLE_0x8           0x8
   9 #define APBDMA_DMA_CMD_0xC             0xc
  10
  11 #define APBDMA_WIDTH_8BIT               0x0
  12 #define APBDMA_WIDTH_16BIT              0x1
  13 #define APBDMA_WIDTH_32BIT              0x2
  14
  15 #define APBDMA_TYPE_APB                 0
  16 #define APBDMA_TYPE_AHB                 1
  17
  18 #define APBDMA_NO_TRIGGER_IRQ           0x0
  19 #define APBDMA_TRIGGER_IRQ              0x1
  20
  21 #define APBDMA_CTL_FIX                  0
  22 #define APBDMA_CTL_INC1                 1
  23 #define APBDMA_CTL_INC2                 2
  24 #define APBDMA_CTL_INC4                 4
  25 #define APBDMA_CTL_INC8                 8
  26 #define APBDMA_CTL_INC16                16
  27 #define APBDMA_CTL_DEC1                 (-1)
  28 #define APBDMA_CTL_DEC2                 (-2)
  29 #define APBDMA_CTL_DEC4                 (-4)
  30
  31 typedef struct
  32 {
  33     /* add dma parameter */
  34     unsigned int    src;        // source address for dma
  35     unsigned int    dest;       // dest address for dma
  36     unsigned int    width;      // data width (0/1/2=>8/16/32)
  37     unsigned int    req_num;    // hardware request/grant number
  38     int             sctl;       // source incremental
  39     int             dctl;       // dest incremental
  40     unsigned int    stype;      // source type (0/1 => APB/AHB)
  41     unsigned int    dtype;      // dest type (0/1 => APB/AHB)
  42     unsigned int    burst;      // (0/1)==>(disable/enable)
  43     unsigned int    size;       // dma count
  44     unsigned int    irq;        // (0/1)==>(disable/enable)
  45 } apb_dma_parm_t;
  46
  47 typedef struct
  48 {
  49     /* init parameter */
  50     unsigned int    base;
  51     unsigned int    channel_base;
  52     unsigned int    channel;
  53 } apb_dma_data_t;
  54
  55
  56
  57 apb_dma_data_t *apb_dma_alloc(void);
  58 void apb_dma_free(apb_dma_data_t *priv);
  59 int apb_dma_init(apb_dma_data_t *priv);
  60 inline void apb_dma_add(apb_dma_data_t *priv,apb_dma_parm_t *parm);
  61 inline void apb_dma_start(apb_dma_data_t *priv);
  62 void apb_dma_reset(apb_dma_data_t *priv);
  63 inline void apb_dma_clear_int(apb_dma_data_t *priv);
  64 #endif