---

yaml
---
r: 18848
b: refs/heads/master
c: 8d238e0
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 012b265f76ce5d497b182569dc77f2c68662bead
+refs/heads/master: 8d238e012469a9a332c78d6a69a8a46ac4b1e9c2

trunk/drivers/scsi/libata-core.c

@@ -611,6 +611,10 @@ int ata_rwcmd_protocol(struct ata_queued_cmd *qc)
 	if (dev->flags & ATA_DFLAG_PIO) {
 		tf->protocol = ATA_PROT_PIO;
 		index = dev->multi_count ? 0 : 8;
+	} else if (lba48 && (qc->ap->flags & ATA_FLAG_PIO_LBA48)) {
+		/* Unable to use DMA due to host limitation */
+		tf->protocol = ATA_PROT_PIO;
+		index = dev->multi_count ? 0 : 4;
 	} else {
 		tf->protocol = ATA_PROT_DMA;
 		index = 16;

trunk/include/linux/libata.h

@@ -126,16 +126,19 @@ enum {
 
 	ATA_FLAG_SUSPENDED	= (1 << 12), /* port is suspended */
 
+	ATA_FLAG_PIO_LBA48	= (1 << 13), /* Host DMA engine is LBA28 only */
+	ATA_FLAG_IRQ_MASK	= (1 << 14), /* Mask IRQ in PIO xfers */
+
 	ATA_QCFLAG_ACTIVE	= (1 << 1), /* cmd not yet ack'd to scsi lyer */
 	ATA_QCFLAG_SG		= (1 << 3), /* have s/g table? */
 	ATA_QCFLAG_SINGLE	= (1 << 4), /* no s/g, just a single buffer */
 	ATA_QCFLAG_DMAMAP	= ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
 
 	/* various lengths of time */
-	ATA_TMOUT_EDD		= 5 * HZ,	/* hueristic */
+	ATA_TMOUT_EDD		= 5 * HZ,	/* heuristic */
 	ATA_TMOUT_PIO		= 30 * HZ,
-	ATA_TMOUT_BOOT		= 30 * HZ,	/* hueristic */
-	ATA_TMOUT_BOOT_QUICK	= 7 * HZ,	/* hueristic */
+	ATA_TMOUT_BOOT		= 30 * HZ,	/* heuristic */
+	ATA_TMOUT_BOOT_QUICK	= 7 * HZ,	/* heuristic */
 	ATA_TMOUT_CDB		= 30 * HZ,
 	ATA_TMOUT_CDB_QUICK	= 5 * HZ,
 	ATA_TMOUT_INTERNAL	= 30 * HZ,