Pilot sun4c floppy driver based on i386 version;

- same limitations as isa/fd.c: just read/write
  - in need of a fast interrupt handler

sys/arch/sparc/dev/fdreg.h

@@ -0,0 +1,106 @@
+/*	$NetBSD: fdreg.h,v 1.1 1995/02/17 20:28:33 pk Exp $	*/
+
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fdreg.h	7.1 (Berkeley) 5/9/91
+ */
+
+/*
+ * AT floppy controller registers and bitfields
+ */
+
+/* uses NEC765 controller */
+#include <dev/ic/nec765.h>
+
+struct fdreg_sun4m {
+	u_int8_t	fd_statusA;
+	u_int8_t	fd_statusB;
+	u_int8_t	fd_dor;		/* Digital Output Register (R/W) */
+	u_int8_t	fd_tdr;		/* Tape Control Register (R/W) */
+	u_int8_t	fd_msr;		/* Main Status Register (R) */
+#define fd_drs		fd_msr		/* Data Rate Select Register (W) */
+	u_int8_t	fd_data;	/* Data (FIFO) register (R/W) */
+	u_int8_t	fd_reserved;
+	u_int8_t	fd_dir;		/* Digital Input Register (R) */
+#define fd_ccr		fd_dir		/* Configuration Control (W) */
+};
+
+struct fdreg_sun4c {
+	u_int8_t	fd_msr;		/* Main Status Register (R) */
+#if already_a_define
+#define fd_drs	fd_msr			/* Data Rate Select Register (W) */
+#endif
+#define DRS_RESET	0x80
+#define DRS_POWER	0x40
+#define DRS_PLL		0x20
+	u_int8_t	fd_data;	/* Data (FIFO) register (R/W) */
+};
+
+union fdreg {
+	struct fdreg_sun4c funreg4c;
+	struct fdreg_sun4m funreg4m;
+};
+
+#define	FDO_FDSEL	0x03		/*  floppy device select */
+#define	FDO_FRST	0x04		/*  floppy controller reset */
+#define	FDO_FDMAEN	0x08		/*  enable floppy DMA and Interrupt */
+#define	FDO_MOEN(n)	((1 << n) * 0x10)	/* motor enable */
+
+#define	FDC_500KBPS	0x00		/*   500KBPS MFM drive transfer rate */
+#define	FDC_300KBPS	0x01		/*   300KBPS MFM drive transfer rate */
+#define	FDC_250KBPS	0x02		/*   250KBPS MFM drive transfer rate */
+#define	FDC_125KBPS	0x03		/*   125KBPS  FM drive transfer rate */
+
+#define	FDI_DCHG	0x80		/*   diskette has been changed */
+
+#define	FDC_BSIZE	512
+#define	FDC_NPORT	8
+#define	FDC_MAXIOSIZE	NBPG	/* XXX should be MAXBSIZE */
+
+
+/* XXX - find a place for these... */
+#define NE7CMD_CFG		0x13
+#define CFG_EIS			0x40
+#define CFG_EFIFO		0x20
+#define CFG_POLL		0x10
+
+#define NE7CMD_LOCK		0x14
+#define CFG_LOCK		0x80
+
+#define NE7CMD_MOTOR		0x0b
+#define MOTOR_ON		0x80
+
+#define NE7CMD_DUMPREG		0x0e
+#define NE7CMD_VERSION		0x10
+
+#define FDIOCEJECT	_IO('f', 24)