[PATCH 2/8] libata: add protocol data transfer tests

[Tejun Heo <htejun@gmail.com>]

Add protocol data transfer tests.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---
 include/linux/ata.h |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 61535e7..2318531 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -323,6 +323,27 @@ enum ata_tf_protocols {
 	ATA_PROT_ATAPI_DMA,	/* packet command with special DMA sauce */
 };
 
+static inline int ata_is_nodata(u8 prot)
+{
+	return prot == ATA_PROT_NODATA || prot == ATA_PROT_ATAPI_NODATA;
+}
+
+static inline int ata_is_pio_data(u8 prot)
+{
+	return prot == ATA_PROT_PIO || prot == ATA_PROT_ATAPI;
+}
+
+static inline int ata_is_dma_data(u8 prot)
+{
+	return prot == ATA_PROT_DMA || prot == ATA_PROT_NCQ ||
+		prot == ATA_PROT_ATAPI_DMA;
+}
+
+static inline int ata_is_data(u8 prot)
+{
+	return ata_is_pio_data(prot) || ata_is_dma_data(prot);
+}
+
 enum ata_ioctls {
 	ATA_IOC_GET_IO32	= 0x309,
 	ATA_IOC_SET_IO32	= 0x324,
-- 
1.5.2.4