As I have seen sg_io does not support NCQ in ATA passthrough.
will changing the mapping function libata-scsi.c (line 2745) , work?
If not , how else can I check the protocol (FPDMA) ?
static u8
2725ata_scsi_map_proto(u8 byte1)
2726{
2727 switch((byte1 & 0x1e) >> 1) {
2728 case 3: /* Non-data */
2729 return ATA_PROT_NODATA;
2730
2731 case 6: /* DMA */
2732 case 10: /* UDMA Data-in */
2733 case 11: /* UDMA Data-Out */
2734 return ATA_PROT_DMA;
2735
2736 case 4: /* PIO Data-in */
2737 case 5: /* PIO Data-out */
2738 return ATA_PROT_PIO;
2739
2745 case 12: /* FPDMA */
return ATA_PROT_NCQ
2740 case 0: /* Hard Reset */
2741 case 1: /* SRST */
2742 case 8: /* Device Diagnostic */
2743 case 9: /* Device Reset */
2744 case 7: /* DMA Queued */
2746 case 15: /* Return Response Info */
2747 default: /* Reserved */
2748 break;
2749 }
2750
2751 return ATA_PROT_UNKNOWN;
2752}
Thanks
Dan Porat
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