arch/sh/include/asm/dma-sh.h

   1 /*
   2  * arch/sh/include/asm/dma-sh.h
   3  *
   4  * Copyright (C) 2000  Takashi YOSHII
   5  * Copyright (C) 2003  Paul Mundt
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #ifndef __DMA_SH_H
  12 #define __DMA_SH_H
  13
  14 #include <asm/dma.h>
  15 #include <cpu/dma.h>
  16
  17 /* DMAOR contorl: The DMAOR access size is different by CPU.*/
  18 #if defined(CONFIG_CPU_SUBTYPE_SH7723)  || \
  19     defined(CONFIG_CPU_SUBTYPE_SH7724)  || \
  20     defined(CONFIG_CPU_SUBTYPE_SH7780)  || \
  21     defined(CONFIG_CPU_SUBTYPE_SH7785)
  22 #define dmaor_read_reg(n) \
  23     (n ? ctrl_inw(SH_DMAC_BASE1 + DMAOR) \
  24         : ctrl_inw(SH_DMAC_BASE0 + DMAOR))
  25 #define dmaor_write_reg(n, data) \
  26     (n ? ctrl_outw(data, SH_DMAC_BASE1 + DMAOR) \
  27     : ctrl_outw(data, SH_DMAC_BASE0 + DMAOR))
  28 #else /* Other CPU */
  29 #define dmaor_read_reg(n) ctrl_inw(SH_DMAC_BASE0 + DMAOR)
  30 #define dmaor_write_reg(n, data) ctrl_outw(data, SH_DMAC_BASE0 + DMAOR)
  31 #endif
  32
  33 static int dmte_irq_map[] __maybe_unused = {
  34 #if (MAX_DMA_CHANNELS >= 4)
  35     DMTE0_IRQ,
  36     DMTE0_IRQ + 1,
  37     DMTE0_IRQ + 2,
  38     DMTE0_IRQ + 3,
  39 #endif
  40 #if (MAX_DMA_CHANNELS >= 6)
  41     DMTE4_IRQ,
  42     DMTE4_IRQ + 1,
  43 #endif
  44 #if (MAX_DMA_CHANNELS >= 8)
  45     DMTE6_IRQ,
  46     DMTE6_IRQ + 1,
  47 #endif
  48 #if (MAX_DMA_CHANNELS >= 12)
  49     DMTE8_IRQ,
  50     DMTE9_IRQ,
  51     DMTE10_IRQ,
  52     DMTE11_IRQ,
  53 #endif
  54 };
  55
  56 /* Definitions for the SuperH DMAC */
  57 #define REQ_L   0x00000000
  58 #define REQ_E   0x00080000
  59 #define RACK_H  0x00000000
  60 #define RACK_L  0x00040000
  61 #define ACK_R   0x00000000
  62 #define ACK_W   0x00020000
  63 #define ACK_H   0x00000000
  64 #define ACK_L   0x00010000
  65 #define DM_INC  0x00004000
  66 #define DM_DEC  0x00008000
  67 #define SM_INC  0x00001000
  68 #define SM_DEC  0x00002000
  69 #define RS_IN   0x00000200
  70 #define RS_OUT  0x00000300
  71 #define TS_BLK  0x00000040
  72 #define TM_BUR  0x00000020
  73 #define CHCR_DE 0x00000001
  74 #define CHCR_TE 0x00000002
  75 #define CHCR_IE 0x00000004
  76
  77 /* DMAOR definitions */
  78 #define DMAOR_AE        0x00000004
  79 #define DMAOR_NMIF      0x00000002
  80 #define DMAOR_DME       0x00000001
  81
  82 /*
  83  * Define the default configuration for dual address memory-memory transfer.
  84  * The 0x400 value represents auto-request, external->external.
  85  */
  86 #define RS_DUAL (DM_INC | SM_INC | 0x400 | TS_32)
  87
  88 /* DMA base address */
  89 static u32 dma_base_addr[] __maybe_unused = {
  90 #if (MAX_DMA_CHANNELS >= 4)
  91         SH_DMAC_BASE0 + 0x00,   /* channel 0 */
  92         SH_DMAC_BASE0 + 0x10,
  93         SH_DMAC_BASE0 + 0x20,
  94         SH_DMAC_BASE0 + 0x30,
  95 #endif
  96 #if (MAX_DMA_CHANNELS >= 6)
  97         SH_DMAC_BASE0 + 0x50,
  98         SH_DMAC_BASE0 + 0x60,
  99 #endif
 100 #if (MAX_DMA_CHANNELS >= 8)
 101         SH_DMAC_BASE1 + 0x00,
 102         SH_DMAC_BASE1 + 0x10,
 103 #endif
 104 #if (MAX_DMA_CHANNELS >= 12)
 105         SH_DMAC_BASE1 + 0x20,
 106         SH_DMAC_BASE1 + 0x30,
 107         SH_DMAC_BASE1 + 0x50,
 108         SH_DMAC_BASE1 + 0x60, /* channel 11 */
 109 #endif
 110 };
 111
 112 /* DMA register */
 113 #define SAR     0x00
 114 #define DAR     0x04
 115 #define TCR     0x08
 116 #define CHCR    0x0C
 117 #define DMAOR   0x40
 118
 119 /*
 120  * for dma engine
 121  *
 122  * SuperH DMA mode
 123  */
 124 #define SHDMA_MIX_IRQ   (1 << 1)
 125 #define SHDMA_DMAOR1    (1 << 2)
 126 #define SHDMA_DMAE1             (1 << 3)
 127
 128 struct sh_dmae_pdata {
 129         unsigned int mode;
 130 };
 131
 132 #endif /* __DMA_SH_H */