--- /dev/null	Wed Oct  6 01:33:00 2004
+++ src/sys/cam/scsi/scsi_ufi.h	Wed Oct  6 01:41:49 2004
@@ -0,0 +1,108 @@
+/*
+ * Structures and definitions for SCSI commands to UFI Floppy Devices,
+ * commonly used to format such devices.
+ *
+ * $FreeBSD$
+ *
+ */
+
+#ifndef	_SCSI_SCSI_UFI_H
+#define _SCSI_SCSI_UFI_H 1
+
+#include <sys/cdefs.h>
+
+/*
+ * Opcodes
+ */
+#define	READ_FORMAT_CAPACITY	0x23
+#define	WRITE_AND_VERIFY	0x2E	/* XXX */
+#define	VERIFY			0x2F	/* XXX */
+
+/*
+ * READ_FORMAT_CAPACITY cdbs are *always* 12 bytes long,
+ * and must contain the LUN, and the length of the returned
+ * format capacity list which the host is able to handle.
+ */
+
+struct scsi_read_format_capacity
+{
+	uint8_t	opcode;		/* READ_FORMAT_CAPACITY */
+	uint8_t	lun;		/* top 3 bits contain LUN */
+	uint8_t	unused00[4];
+	uint8_t	alloc_len[2];	/* always scsi i.e. big endian */
+	uint8_t	unused01[3];
+};
+
+/*
+ * VERIFY is used to verify the physical disk medium. It is a 12-byte CDB.
+ * Replies to this come in through the usual sense key mechanism.
+ */
+
+struct scsi_verify
+{
+	uint8_t	opcode;		/* VERIFY */
+	uint8_t	lun;		/* All other bits should be zero */
+#define	SVFY_RELADR	0x01	/* Always 0 for UFI. */
+#define	SVFY_BYTECHK	0x02	/* Always 0 for UFI. */
+#define	SVFY_DPO	0x10	/* Always 0 for UFI. */
+#define	SVFY_LUN_MASK	0xE0	/* Top 3 MSBs are LUN */
+	uint8_t	addr[4];	/* LBA to begin verification at */
+	uint8_t	unused00[1];
+	uint8_t	len[4];		/* number of blocks to verify */
+	uint8_t	unused01[3];
+};
+
+/*
+ * WRITE_AND_VERIFY writes a track and verifies it.
+ * Replies to this come in through the usual sense key mechanism.
+ */
+
+struct scsi_write_and_verify
+{
+	uint8_t	opcode;		/* WRITE_AND_VERIFY */
+	uint8_t	lun;		/* All other bits should be zero */
+#define	SVFY_RELADR	0x01	/* Always 0 for UFI. */
+#define	SVFY_BYTECHK	0x02	/* Always 0 for UFI. */
+#define	SVFY_DPO	0x10	/* Always 0 for UFI. */
+#define	SVFY_LUN_MASK	0xE0	/* Top 3 MSBs are LUN */
+	uint8_t	addr[4];	/* LBA to begin verification at */
+	uint8_t	unused00[1];
+	uint8_t	len[4];		/* number of blocks to write and verify */
+	uint8_t	unused01[3];
+};
+
+/*
+ * Replies to READ_FORMAT_CAPACITY look like this:
+ *
+ * scsi_capacity_list_hdr
+ * scsi_capacity_descriptor (maximum/current)
+ *
+ * The appropriate csio_decode() format string looks like this:
+ * "{} *i3 {Len} i1 {Blocks} i4 {} *b6 {Code} b2 {Blocklen} i3"
+ *
+ * If the capacity list header length is greater than
+ * sizeof(struct format_capacity_descriptor), then there are
+ * additional format capacity descriptors available which
+ * denote which format(s) the drive can handle.
+ *
+ */
+
+struct format_capacity_list_header {
+	uint8_t	unused[3];
+	uint8_t	capacity_list_length;
+};
+
+struct format_capacity_descriptor {
+	uint8_t	num_blocks[4];	/* total number of LBAs */
+	uint8_t	code;		/* only present in max/cur descriptor */
+#define FCD_CODE_MASK	0x03	/* mask for code field above */
+#define FCD_UNFORMATTED	0x01	/* unformatted media present,
+				 * maximum capacity returned */
+#define FCD_FORMATTED	0x02	/* formatted media present,
+				 * current capacity returned */
+#define FCD_NOMEDIA	0x03	/* no media present,
+				 * maximum device capacity returned */
+	uint8_t	block_len[3];	/* length of an LBA in bytes */
+};
+
+#endif /* _SCSI_SCSI_UFI_H */