Specify default SCSI inquiry size (36 bytes) on IOCS_S_INQUIRY() comm…

…and.

X680x0 SCSI IOCS stalls if SCSI device doesn't return inquiry data
of specified allocation length size on the INQUIRY command,
and it causes hangup on the XM6 based emulators that return only
upto 36 byte inquiry data on SCSI disk emulation.

Many real SCSI-2 hard drives seem to support >100 byte inquiry data,
but at least there is a harddisk that returns only supported inquiry
data size and quits transfer.

The bootloader checks only the device type and there is no reason
to read 100 bytes that includes vender specific data.

Analyzed and reported by GIMONS, a developer of XM6 TypeG emulator,
which also can run NetBSD/x68k.

sys/arch/x68k/stand/libiocs/iocs.h

@@ -6,7 +6,7 @@
  *	(based on PD libc 1.1.32 by PROJECT C Library)
  *	public domain
  *
- *	$NetBSD: iocs.h,v 1.8 2011/02/21 02:31:59 itohy Exp $
+ *	$NetBSD: iocs.h,v 1.9 2014/02/11 08:06:07 tsutsui Exp $
  */
 /*
  * PROJECT C Library, X68000 PROGRAMMING INTERFACE DEFINITION
@@ -224,7 +224,10 @@ struct iocs_inquiry {
 	unsigned char	ver;
 	unsigned char	reserve;
 	unsigned char	size;
-	unsigned char	buff[0];	/* actually longer */
+	unsigned char	class[3];
+	char		vendor[8];
+	char		product[16];
+	char		revision[4];
 };
 
 /*

sys/arch/x68k/stand/libsa/sdcd.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: sdcd.c,v 1.14 2012/11/22 20:15:49 tsutsui Exp $	*/
+/*	$NetBSD: sdcd.c,v 1.15 2014/02/11 08:06:07 tsutsui Exp $	*/
 
 /*
  * Copyright (c) 2001 MINOURA Makoto.
@@ -67,9 +67,9 @@ check_unit(int id)
 	}
 
 	{
-		struct iocs_inquiry *inqdata= buffer;
+		struct iocs_inquiry *inqdata = buffer;
 
-		error = IOCS_S_INQUIRY(100, id, inqdata);
+		error = IOCS_S_INQUIRY(sizeof(*inqdata), id, inqdata);
 		if (error < 0) {		/* WHY??? */
 			error = ENXIO;
 			goto out;