kernel/arch/blackfin/mach-bf609/dma.c

   1 /*
   2  * the simple DMA Implementation for Blackfin
   3  *
   4  * Copyright 2007-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <linux/module.h>
  10
  11 #include <asm/blackfin.h>
  12 #include <asm/dma.h>
  13
  14 struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
  15         (struct dma_register *) DMA0_NEXT_DESC_PTR,
  16         (struct dma_register *) DMA1_NEXT_DESC_PTR,
  17         (struct dma_register *) DMA2_NEXT_DESC_PTR,
  18         (struct dma_register *) DMA3_NEXT_DESC_PTR,
  19         (struct dma_register *) DMA4_NEXT_DESC_PTR,
  20         (struct dma_register *) DMA5_NEXT_DESC_PTR,
  21         (struct dma_register *) DMA6_NEXT_DESC_PTR,
  22         (struct dma_register *) DMA7_NEXT_DESC_PTR,
  23         (struct dma_register *) DMA8_NEXT_DESC_PTR,
  24         (struct dma_register *) DMA9_NEXT_DESC_PTR,
  25         (struct dma_register *) DMA10_NEXT_DESC_PTR,
  26         (struct dma_register *) DMA11_NEXT_DESC_PTR,
  27         (struct dma_register *) DMA12_NEXT_DESC_PTR,
  28         (struct dma_register *) DMA13_NEXT_DESC_PTR,
  29         (struct dma_register *) DMA14_NEXT_DESC_PTR,
  30         (struct dma_register *) DMA15_NEXT_DESC_PTR,
  31         (struct dma_register *) DMA16_NEXT_DESC_PTR,
  32         (struct dma_register *) DMA17_NEXT_DESC_PTR,
  33         (struct dma_register *) DMA18_NEXT_DESC_PTR,
  34         (struct dma_register *) DMA19_NEXT_DESC_PTR,
  35         (struct dma_register *) DMA20_NEXT_DESC_PTR,
  36         (struct dma_register *) MDMA0_SRC_CRC0_NEXT_DESC_PTR,
  37         (struct dma_register *) MDMA0_DEST_CRC0_NEXT_DESC_PTR,
  38         (struct dma_register *) MDMA1_SRC_CRC1_NEXT_DESC_PTR,
  39         (struct dma_register *) MDMA1_DEST_CRC1_NEXT_DESC_PTR,
  40         (struct dma_register *) MDMA2_SRC_NEXT_DESC_PTR,
  41         (struct dma_register *) MDMA2_DEST_NEXT_DESC_PTR,
  42         (struct dma_register *) MDMA3_SRC_NEXT_DESC_PTR,
  43         (struct dma_register *) MDMA3_DEST_NEXT_DESC_PTR,
  44         (struct dma_register *) DMA29_NEXT_DESC_PTR,
  45         (struct dma_register *) DMA30_NEXT_DESC_PTR,
  46         (struct dma_register *) DMA31_NEXT_DESC_PTR,
  47         (struct dma_register *) DMA32_NEXT_DESC_PTR,
  48         (struct dma_register *) DMA33_NEXT_DESC_PTR,
  49         (struct dma_register *) DMA34_NEXT_DESC_PTR,
  50         (struct dma_register *) DMA35_NEXT_DESC_PTR,
  51         (struct dma_register *) DMA36_NEXT_DESC_PTR,
  52         (struct dma_register *) DMA37_NEXT_DESC_PTR,
  53         (struct dma_register *) DMA38_NEXT_DESC_PTR,
  54         (struct dma_register *) DMA39_NEXT_DESC_PTR,
  55         (struct dma_register *) DMA40_NEXT_DESC_PTR,
  56         (struct dma_register *) DMA41_NEXT_DESC_PTR,
  57         (struct dma_register *) DMA42_NEXT_DESC_PTR,
  58         (struct dma_register *) DMA43_NEXT_DESC_PTR,
  59         (struct dma_register *) DMA44_NEXT_DESC_PTR,
  60         (struct dma_register *) DMA45_NEXT_DESC_PTR,
  61         (struct dma_register *) DMA46_NEXT_DESC_PTR,
  62 };
  63 EXPORT_SYMBOL(dma_io_base_addr);
  64
  65 int channel2irq(unsigned int channel)
  66 {
  67         int ret_irq = -1;
  68
  69         switch (channel) {
  70         case CH_SPORT0_RX:
  71                 ret_irq = IRQ_SPORT0_RX;
  72                 break;
  73         case CH_SPORT0_TX:
  74                 ret_irq = IRQ_SPORT0_TX;
  75                 break;
  76         case CH_SPORT1_RX:
  77                 ret_irq = IRQ_SPORT1_RX;
  78                 break;
  79         case CH_SPORT1_TX:
  80                 ret_irq = IRQ_SPORT1_TX;
  81                 break;
  82         case CH_SPORT2_RX:
  83                 ret_irq = IRQ_SPORT2_RX;
  84                 break;
  85         case CH_SPORT2_TX:
  86                 ret_irq = IRQ_SPORT2_TX;
  87                 break;
  88         case CH_SPI0_TX:
  89                 ret_irq = IRQ_SPI0_TX;
  90                 break;
  91         case CH_SPI0_RX:
  92                 ret_irq = IRQ_SPI0_RX;
  93                 break;
  94         case CH_SPI1_TX:
  95                 ret_irq = IRQ_SPI1_TX;
  96                 break;
  97         case CH_SPI1_RX:
  98                 ret_irq = IRQ_SPI1_RX;
  99                 break;
 100         case CH_RSI:
 101                 ret_irq = IRQ_RSI;
 102                 break;
 103         case CH_SDU:
 104                 ret_irq = IRQ_SDU;
 105                 break;
 106         case CH_LP0:
 107                 ret_irq = IRQ_LP0;
 108                 break;
 109         case CH_LP1:
 110                 ret_irq = IRQ_LP1;
 111                 break;
 112         case CH_LP2:
 113                 ret_irq = IRQ_LP2;
 114                 break;
 115         case CH_LP3:
 116                 ret_irq = IRQ_LP3;
 117                 break;
 118         case CH_UART0_RX:
 119                 ret_irq = IRQ_UART0_RX;
 120                 break;
 121         case CH_UART0_TX:
 122                 ret_irq = IRQ_UART0_TX;
 123                 break;
 124         case CH_UART1_RX:
 125                 ret_irq = IRQ_UART1_RX;
 126                 break;
 127         case CH_UART1_TX:
 128                 ret_irq = IRQ_UART1_TX;
 129                 break;
 130         case CH_EPPI0_CH0:
 131                 ret_irq = IRQ_EPPI0_CH0;
 132                 break;
 133         case CH_EPPI0_CH1:
 134                 ret_irq = IRQ_EPPI0_CH1;
 135                 break;
 136         case CH_EPPI1_CH0:
 137                 ret_irq = IRQ_EPPI1_CH0;
 138                 break;
 139         case CH_EPPI1_CH1:
 140                 ret_irq = IRQ_EPPI1_CH1;
 141                 break;
 142         case CH_EPPI2_CH0:
 143                 ret_irq = IRQ_EPPI2_CH0;
 144                 break;
 145         case CH_EPPI2_CH1:
 146                 ret_irq = IRQ_EPPI2_CH1;
 147                 break;
 148         case CH_PIXC_CH0:
 149                 ret_irq = IRQ_PIXC_CH0;
 150                 break;
 151         case CH_PIXC_CH1:
 152                 ret_irq = IRQ_PIXC_CH1;
 153                 break;
 154         case CH_PIXC_CH2:
 155                 ret_irq = IRQ_PIXC_CH2;
 156                 break;
 157         case CH_PVP_CPDOB:
 158                 ret_irq = IRQ_PVP_CPDOB;
 159                 break;
 160         case CH_PVP_CPDOC:
 161                 ret_irq = IRQ_PVP_CPDOC;
 162                 break;
 163         case CH_PVP_CPSTAT:
 164                 ret_irq = IRQ_PVP_CPSTAT;
 165                 break;
 166         case CH_PVP_CPCI:
 167                 ret_irq = IRQ_PVP_CPCI;
 168                 break;
 169         case CH_PVP_MPDO:
 170                 ret_irq = IRQ_PVP_MPDO;
 171                 break;
 172         case CH_PVP_MPDI:
 173                 ret_irq = IRQ_PVP_MPDI;
 174                 break;
 175         case CH_PVP_MPSTAT:
 176                 ret_irq = IRQ_PVP_MPSTAT;
 177                 break;
 178         case CH_PVP_MPCI:
 179                 ret_irq = IRQ_PVP_MPCI;
 180                 break;
 181         case CH_PVP_CPDOA:
 182                 ret_irq = IRQ_PVP_CPDOA;
 183                 break;
 184         case CH_MEM_STREAM0_SRC:
 185         case CH_MEM_STREAM0_DEST:
 186                 ret_irq = IRQ_MDMAS0;
 187                 break;
 188         case CH_MEM_STREAM1_SRC:
 189         case CH_MEM_STREAM1_DEST:
 190                 ret_irq = IRQ_MDMAS1;
 191                 break;
 192         case CH_MEM_STREAM2_SRC:
 193         case CH_MEM_STREAM2_DEST:
 194                 ret_irq = IRQ_MDMAS2;
 195                 break;
 196         case CH_MEM_STREAM3_SRC:
 197         case CH_MEM_STREAM3_DEST:
 198                 ret_irq = IRQ_MDMAS3;
 199                 break;
 200         }
 201         return ret_irq;
 202 }