diff --git a/kernel/ata.h b/kernel/ata.h
new file mode 100644
index 0000000..2568701
--- /dev/null
+++ b/kernel/ata.h
@@ -0,0 +1,32 @@
+/*
+Copyright (C) 2015-2019 The University of Notre Dame
+This software is distributed under the GNU General Public License.
+See the file LICENSE for details.
+*/
+
+#ifndef ATA_H
+#define ATA_H
+
+#define ATA_BLOCKSIZE 512
+#define ATAPI_BLOCKSIZE 2048
+
+#include "device.h"
+
+struct ata_count {
+	int blocks_written[4];
+	int blocks_read[4];
+};
+
+void ata_init();
+
+struct ata_count ata_stats();
+void ata_reset(int unit);
+
+int ata_probe(int unit, int *nblocks, int *blocksize, char *name);
+int ata_read(int unit, void *buffer, int nblocks, int offset);
+int ata_write(int unit, const void *buffer, int nblocks, int offset);
+
+int atapi_probe(int unit, int *nblocks, int *blocksize, char *name);
+int atapi_read(int unit, void *buffer, int nblocks, int offset);
+
+#endif