libata atapi work #2

diff -Nru a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
@@ -2445,7 +2445,7 @@
 
 	case ATA_PROT_DMA:
 		ap->ops->tf_load(ap, &qc->tf);	 /* load tf registers */
-		ap->ops->bmdma_setup(qc);	    /* initiate bmdma */
+		ap->ops->bmdma_setup(qc);	    /* set up bmdma */
 		ap->ops->bmdma_start(qc);	    /* initiate bmdma */
 		break;
 

@@ -2457,6 +2457,13 @@
 		queue_work(ata_wq, &ap->pio_task);
 		break;
 
+	case ATA_PROT_ATAPI:
+	case ATA_PROT_ATAPI_DMA:
+		ap->ops->tf_load(ap, &qc->tf);	 /* load tf registers */
+		ap->ops->bmdma_setup(qc);	    /* set up bmdma */
+		queue_work(ata_wq, &ap->packet_task);
+		break;
+
 	default:
 		WARN_ON(1);
 		return -1;

@@ -2843,7 +2850,7 @@
 
 	/* if we are DMA'ing, irq handler takes over from here */
 	if (qc->tf.protocol == ATA_PROT_ATAPI_DMA) {
-		/* FIXME: start DMA here */
+		ap->ops->bmdma_start(qc);	    /* initiate bmdma */
 	} else {
 		ap->pio_task_state = PIO_ST;
 		queue_work(ata_wq, &ap->pio_task);