Putting it all together – NXP SDMA (i.MX6)

The SDMA engine is a programmable controller in i.MX6, and each peripheral has its own copy function in this controller. One uses this enum to determine their addresses:

enum sdma_peripheral_type { 
    IMX_DMATYPE_SSI,    /* MCU domain SSI */ 
    IMX_DMATYPE_SSI_SP, /* Shared SSI */ 
    IMX_DMATYPE_MMC,    /* MMC */ 
    IMX_DMATYPE_SDHC,   /* SDHC */ 
    IMX_DMATYPE_UART,   /* MCU domain UART */ 
    IMX_DMATYPE_UART_SP,    /* Shared UART */ 
    IMX_DMATYPE_FIRI,   /* FIRI */ 
    IMX_DMATYPE_CSPI,   /* MCU domain CSPI */ 
    IMX_DMATYPE_CSPI_SP,    /* Shared CSPI */ 
    IMX_DMATYPE_SIM,    /* SIM */ 
    IMX_DMATYPE_ATA,    /* ATA */ 
    IMX_DMATYPE_CCM,    /* CCM */ 
    IMX_DMATYPE_EXT,    /* External peripheral */ 
    IMX_DMATYPE_MSHC,   /* Memory Stick Host Controller */ 
    IMX_DMATYPE_MSHC_SP, /* Shared Memory...