linux-imx

    .dma_setup      = ide_dma_setup,

    .dma_start      = ide_dma_start,

    .dma_end        = cmd646_1_dma_end,

    .dma_test_irq       = ide_dma_test_irq,

    .dma_lost_irq       = ide_dma_lost_irq,

    .dma_timer_expiry   = ide_dma_sff_timer_expiry,

    .dma_sff_read_status    = ide_dma_sff_read_status,

};

​

    {   /* 0: CMD643 */

        .name       = DRV_NAME,

        .init_chipset   = init_chipset_cmd64x,

        .enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},

        .port_ops   = &cmd64x_port_ops,

        .host_flags = IDE_HFLAG_CLEAR_SIMPLEX |

                  IDE_HFLAG_ABUSE_PREFETCH |

                  IDE_HFLAG_SERIALIZE,

        .pio_mask   = ATA_PIO5,

        .mwdma_mask = ATA_MWDMA2,

        .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},

        .port_ops   = &cmd648_port_ops,

        .host_flags = IDE_HFLAG_ABUSE_PREFETCH,

        .pio_mask   = ATA_PIO5,

        .mwdma_mask = ATA_MWDMA2,

        .udma_mask  = ATA_UDMA5,

    }

};

​

{

    struct ide_port_info d;

    u8 idx = id->driver_data;

​

    d = cmd64x_chipsets[idx];

​

    if (idx == 1) {

        /*

         * UltraDMA only supported on PCI646U and PCI646U2, which

         * correspond to revisions 0x03, 0x05 and 0x07 respectively.