Handle multi-sector reads by splitting them into subcommands.

[people/xl0/gpxe.git] / src / include / gpxe / ata.h

diff --git a/src/include/gpxe/ata.h b/src/include/gpxe/ata.h
index ecc9c5b..195e361 100644 (file)
--- a/src/include/gpxe/ata.h
+++ b/src/include/gpxe/ata.h
@@ -117,6 +117,9 @@ struct ata_cb {
 /** Master ("device 0") flag in the ATA device register */
 #define ATA_DEV_MASTER 0x00
 
+/** Mask of non-LBA portion of device register */
+#define ATA_DEV_MASK 0xf0
+
 /** "Read sectors" command */
 #define ATA_CMD_READ 0x20