Add PC-Card/ISA SCSI host adpater drivers from NetBSD/pc98

(a NetBSD port for NEC PC-98x1 machines). They are ncv for NCR 53C500,
nsp for Workbit Ninja SCSI-3, and stg for TMC 18C30 and 18C50.

I thank NetBSD/pc98 and bsd-nomads people.

Obtained from:	NetBSD/pc98

4 files changed, 2090 insertions, 0 deletions

diff --git a/sys/dev/nsp/nsp.c b/sys/dev/nsp/nsp.c
new file mode 100644
index 0000000..c2b6762
--- /dev/null
+++ b/sys/dev/nsp/nsp.c
@@ -0,0 +1,1373 @@
+/*	$FreeBSD$	*/
+/*	$NecBSD: nsp.c,v 1.21 1999/07/23 21:00:05 honda Exp $	*/
+/*	$NetBSD$	*/
+
+#define	NSP_DEBUG
+#define	NSP_STATICS
+
+/*
+ *  Copyright (c) 1998
+ *	NetBSD/pc98 porting staff. 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. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+#include "opt_ddb.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/disklabel.h>
+#if defined(__FreeBSD__) && __FreeBSD_version > 500001
+#include <sys/bio.h>
+#endif
+#include <sys/buf.h>
+#include <sys/queue.h>
+#include <sys/malloc.h>
+#include <sys/device_port.h>
+#include <sys/errno.h>
+
+#include <vm/vm.h>
+
+#ifdef __NetBSD__
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/scsipi/scsi_all.h>
+#include <dev/scsipi/scsipi_all.h>
+#include <dev/scsipi/scsiconf.h>
+#include <dev/scsipi/scsi_disk.h>
+
+#include <machine/dvcfg.h>
+#include <machine/physio_proc.h>
+
+#include <i386/Cbus/dev/scsi_low.h>
+#include <i386/Cbus/dev/nspreg.h>
+#include <i386/Cbus/dev/nspvar.h>
+#endif /* __NetBSD__ */
+
+#ifdef __FreeBSD__
+#include <machine/clock.h>
+#define delay(time) DELAY(time)
+
+#include <machine/cpu.h>
+#include <machine/bus_pio.h>
+#include <machine/bus_memio.h>
+#include <machine/bus.h>
+
+#include <machine/dvcfg.h>
+#include <machine/physio_proc.h>
+
+#include <cam/scsi/scsi_low.h>
+#include <dev/nsp/nspreg.h>
+#include <dev/nsp/nspvar.h>
+
+#if __FreeBSD_version < 400001
+#include "nsp.h"
+struct nsp_softc *nspdata[NNSP];
+#endif
+#endif /* __FreeBSD__ */
+
+/***************************************************
+ * USER SETTINGS
+ ***************************************************/
+/* DEVICE CONFIGURATION FLAGS (MINOR)
+ *
+ * 0x01   DISCONECT OFF
+ * 0x02   PARITY LINE OFF
+ * 0x04   IDENTIFY MSG OFF ( = single lun)
+ * 0x08   SYNC TRANSFER OFF
+ */
+
+/***************************************************
+ * PARAMS
+ ***************************************************/
+#define	NSP_NTARGETS	8
+#define	NSP_NLUNS	8
+
+#define	NSP_SELTIMEOUT	200
+
+/***************************************************
+ * DEBUG
+ ***************************************************/
+#ifndef DDB
+#define Debugger() panic("should call debugger here (nsp.c)")
+#else /* ! DDB */
+#ifdef __FreeBSD__
+#define Debugger() Debugger("nsp")
+#endif /* __FreeBSD__ */
+#endif
+
+#ifdef	NSP_DEBUG
+int nsp_debug;
+#endif	/* NSP_DEBUG */
+
+#ifdef	NSP_STATICS
+struct nsp_statics {
+	int disconnect;
+	int reselect;
+	int data_phase_bypass;
+} nsp_statics[NSP_NTARGETS];
+#endif	/* NSP_STATICS */
+
+/***************************************************
+ * ISA DEVICE STRUCTURE
+ ***************************************************/
+extern struct cfdriver nsp_cd;
+
+/**************************************************************
+ * DECLARE
+ **************************************************************/
+/* static */
+static void nsp_pio_read __P((struct nsp_softc *, struct targ_info *));
+static void nsp_pio_write __P((struct nsp_softc *, struct targ_info *));
+static int nsp_xfer __P((struct nsp_softc *, u_int8_t *, int, int));
+static int nsp_msg __P((struct nsp_softc *, struct targ_info *, u_int));
+static int nsp_reselected __P((struct nsp_softc *));
+static __inline int nsp_disconnected __P((struct nsp_softc *, struct targ_info *));
+static __inline void nsp_pdma_end __P((struct nsp_softc *, struct targ_info *));
+static void nsphw_init __P((struct nsp_softc *));
+static int nsp_nexus __P((struct nsp_softc *, struct targ_info *));
+static int nsp_world_start __P((struct nsp_softc *, int));
+static int nsphw_start_selection __P((struct nsp_softc *sc, struct slccb *));
+static void nsphw_bus_reset __P((struct nsp_softc *));
+static void nsphw_attention __P((struct nsp_softc *));
+static u_int nsp_fifo_count __P((struct nsp_softc *));
+static int nsp_negate_signal __P((struct nsp_softc *, u_int8_t, u_char *));
+static int nsp_expect_signal __P((struct nsp_softc *, u_int8_t, u_int8_t));
+static __inline void nsp_start_timer __P((struct nsp_softc *, int));
+static int nsp_dataphase_bypass __P((struct nsp_softc *, struct targ_info *));
+static void nsp_setup_fifo __P((struct nsp_softc *, int));
+static int nsp_lun_init __P((struct nsp_softc *, struct targ_info *, struct lun_info *));
+static void settimeout __P((void *));
+
+struct scsi_low_funcs nspfuncs = {
+	SC_LOW_INIT_T nsp_world_start,
+	SC_LOW_BUSRST_T nsphw_bus_reset,
+	SC_LOW_LUN_INIT_T nsp_lun_init,
+
+	SC_LOW_SELECT_T nsphw_start_selection,
+	SC_LOW_NEXUS_T nsp_nexus,
+
+	SC_LOW_ATTEN_T nsphw_attention,
+	SC_LOW_MSG_T nsp_msg,
+
+	SC_LOW_POLL_T nspintr,
+
+	NULL,
+};
+
+/****************************************************
+ * hwfuncs
+ ****************************************************/
+static __inline u_int8_t nsp_cr_read_1 __P((bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ofs));
+static __inline void nsp_cr_write_1 __P((bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ofs, u_int8_t va));
+
+static __inline u_int8_t
+nsp_cr_read_1(bst, bsh, ofs)
+	bus_space_tag_t bst;
+	bus_space_handle_t bsh;
+	bus_addr_t ofs;
+{
+	
+	bus_space_write_1(bst, bsh, nsp_idxr, ofs);
+	return bus_space_read_1(bst, bsh, nsp_datar);
+}
+
+static __inline void 
+nsp_cr_write_1(bst, bsh, ofs, va)
+	bus_space_tag_t bst;
+	bus_space_handle_t bsh;
+	bus_addr_t ofs;
+	u_int8_t va;
+{
+
+	bus_space_write_1(bst, bsh, nsp_idxr, ofs);
+	bus_space_write_1(bst, bsh, nsp_datar, va);
+}
+	
+static int
+nsp_expect_signal(sc, curphase, mask)
+	struct nsp_softc *sc;
+	u_int8_t curphase, mask;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	int rv = -1;
+	int s;
+	int tout = 0;
+#ifdef __FreeBSD__
+	struct callout_handle ch;
+#endif
+	u_int8_t ph, isrc;
+
+#ifdef __FreeBSD__
+	ch = timeout(settimeout, &tout, hz/2);
+#else
+	timeout(settimeout, &tout, hz/2);
+#endif
+	do 
+	{
+		ph = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+		if (ph == 0xff) {
+			rv = -1;
+			break;
+		}
+		isrc = bus_space_read_1(bst, bsh, nsp_irqsr);
+		if (isrc & IRQSR_SCSI) {
+			rv = 0;
+			break;
+		}
+		if ((ph & mask) != 0 && (ph & SCBUSMON_PHMASK) == curphase) {
+			rv = 1;
+			break;
+		}
+	}
+	while (tout == 0);
+
+	s = splhigh();
+	if (tout == 0) {
+#ifdef __FreeBSD__
+		untimeout(settimeout, &tout, ch);
+#else
+		untimeout(settimeout, &tout);
+#endif
+		splx(s);
+	} else {
+		splx(s);
+		printf("%s: nsp_expect_signal timeout\n", slp->sl_xname);
+		rv = -1;
+	}
+
+	return rv;
+}
+
+static void
+nsphw_init(sc)
+	struct nsp_softc *sc;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+
+	/* block all interrupts */
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_ALLMASK);
+
+	/* setup SCSI interface */
+	bus_space_write_1(bst, bsh, nsp_ifselr, IFSELR_IFSEL);
+
+	nsp_cr_write_1(bst, bsh, NSPR_SCIENR, 0);
+
+	nsp_cr_write_1(bst, bsh, NSPR_XFERMR, XFERMR_IO8);
+	nsp_cr_write_1(bst, bsh, NSPR_CLKDIVR, sc->sc_iclkdiv);
+
+	nsp_cr_write_1(bst, bsh, NSPR_SCIENR, sc->sc_icr);
+	nsp_cr_write_1(bst, bsh, NSPR_PARITYR, 0);
+	nsp_cr_write_1(bst, bsh, NSPR_PTCLRR,
+		       PTCLRR_ACK | PTCLRR_REQ | PTCLRR_HOST | PTCLRR_RSS);
+
+	/* setup fifo asic */
+	bus_space_write_1(bst, bsh, nsp_ifselr, IFSELR_REGSEL);
+	nsp_cr_write_1(bst, bsh, NSPR_TERMPWRC, 0);
+	if ((nsp_cr_read_1(bst, bsh, NSPR_OCR) & OCR_TERMPWRS) == 0)
+		nsp_cr_write_1(bst, bsh, NSPR_TERMPWRC, TERMPWRC_POWON);
+
+	nsp_cr_write_1(bst, bsh, NSPR_XFERMR, XFERMR_IO8);
+	nsp_cr_write_1(bst, bsh, NSPR_CLKDIVR, sc->sc_clkdiv);
+	nsp_cr_write_1(bst, bsh, NSPR_TIMERCNT, 0);
+	nsp_cr_write_1(bst, bsh, NSPR_TIMERCNT, 0);
+
+	nsp_cr_write_1(bst, bsh, NSPR_SYNCR, 0);
+	nsp_cr_write_1(bst, bsh, NSPR_ACKWIDTH, 0);
+
+	/* enable interrupts and ack them */
+	nsp_cr_write_1(bst, bsh, NSPR_SCIENR, SCIENR_SCCHG | SCIENR_RESEL | SCIENR_RST);
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQSR_MASK);
+
+	nsp_setup_fifo(sc, 0);
+}
+
+/****************************************************
+ * scsi low interface
+ ****************************************************/
+static void
+nsphw_attention(sc)
+	struct nsp_softc *sc;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	u_int8_t cr;
+
+	cr = nsp_cr_read_1(bst, bsh, NSPR_SCBUSCR)/*  & ~SCBUSCR_ACK */;
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, cr | SCBUSCR_ATN);
+}
+
+static void
+nsphw_bus_reset(sc)
+	struct nsp_softc *sc;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	int i;
+
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_ALLMASK);
+
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, SCBUSCR_RST);
+	delay(100 * 1000);	/* 100ms */
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, 0);
+	for (i = 0; i < 5; i ++)
+		(void) nsp_cr_read_1(bst, bsh, NSPR_IRQPHS);
+
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQSR_MASK);
+}
+
+static int
+nsphw_start_selection(sc, cb)
+	struct nsp_softc *sc;
+	struct slccb *cb;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	struct targ_info *ti = cb->ti;
+	register u_int8_t arbs, ph;
+	int s;
+	int tout = 0;
+#ifdef __FreeBSD__
+	struct callout_handle ch;
+#endif
+
+	/* check bus free */
+	if (slp->sl_disc > 0)
+	{
+		s = splhigh();
+		ph = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+		if (ph != SCBUSMON_FREE)
+		{
+			splx(s);
+			return SCSI_LOW_START_FAIL;
+		}
+		splx(s);
+	}
+
+	/* start arbitration */
+	SCSI_LOW_SETUP_PHASE(ti, PH_ARBSTART);
+	nsp_cr_write_1(bst, bsh, NSPR_ARBITS, ARBITS_EXEC);
+#ifdef __FreeBSD__
+	ch = timeout(settimeout, &tout, 2 * hz);
+#else
+	timeout(settimeout, &tout, 2 * hz);
+#endif
+	do 
+	{
+		/* XXX: what a stupid chip! */
+		arbs = nsp_cr_read_1(bst, bsh, NSPR_ARBITS);
+		delay(1);
+	} 
+	while ((arbs & (ARBITS_WIN | ARBITS_FAIL)) == 0 && tout == 0);
+
+	s = splhigh();
+	if (tout == 0) {
+#ifdef __FreeBSD__
+		untimeout(settimeout, &tout, ch);
+#else
+		untimeout(settimeout, &tout);
+#endif
+	}
+	splx(s);
+
+	if ((arbs & ARBITS_WIN) == 0)
+	{
+		nsp_cr_write_1(bst, bsh, NSPR_ARBITS, ARBITS_CLR);
+		return SCSI_LOW_START_FAIL;
+	}
+
+	/* assert select line */
+	SCSI_LOW_SETUP_PHASE(ti, PH_SELSTART);
+	scsi_low_arbit_win(slp, ti);
+	delay(3);
+	nsp_cr_write_1(bst, bsh, NSPR_DATA,
+		       sc->sc_idbit | (1 << ti->ti_id));
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR,
+			SCBUSCR_SEL | SCBUSCR_BSY | sc->sc_busc);
+	delay(3);
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, SCBUSCR_SEL |
+			SCBUSCR_BSY | SCBUSCR_DOUT | sc->sc_busc);
+	nsp_cr_write_1(bst, bsh, NSPR_ARBITS, ARBITS_CLR);
+	delay(3);
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR,
+		       SCBUSCR_SEL | SCBUSCR_DOUT | sc->sc_busc);
+
+	/* check selection timeout */
+	nsp_start_timer(sc, 1000 / 51);
+	sc->sc_seltout = 1;
+
+	return SCSI_LOW_START_OK;
+}
+
+static int
+nsp_world_start(sc, fdone)
+	struct nsp_softc *sc;
+	int fdone;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	intrmask_t s;
+
+	s = splcam();
+	sc->sc_cnt = 0;
+	sc->sc_seltout = 0;
+	if ((slp->sl_cfgflags & CFG_NOATTEN) == 0)
+		sc->sc_busc = SCBUSCR_ATN;
+	else
+		sc->sc_busc = 0;
+	sc->sc_icr = (SCIENR_SCCHG | SCIENR_RESEL | SCIENR_RST);
+
+	nsphw_init(sc);
+	scsi_low_bus_reset(slp);
+	splx(s);
+
+	SOFT_INTR_REQUIRED(slp);
+	return 0;
+}
+
+struct ncp_synch_data {
+	u_int min_period;
+	u_int max_period;
+	u_int chip_period;
+	u_int ack_width;
+};
+
+static struct ncp_synch_data ncp_sync_data_40M[] = {
+	{0x0c,0x0c,0x1,0},	/* 20MB  50ns*/
+	{0x19,0x19,0x3,1}, 	/* 10MB  100ns*/ 
+	{0x1a,0x25,0x5,2},	/* 7.5MB 150ns*/ 
+	{0x26,0x32,0x7,3},	/* 5MB   200ns*/
+	{0x0, 0, 0, 0}
+};
+
+static struct ncp_synch_data ncp_sync_data_20M[] = {
+	{0x19,0x19,0x1,0}, 	/* 10MB  100ns*/ 
+	{0x1a,0x25,0x2,0},	/* 7.5MB 150ns*/ 
+	{0x26,0x32,0x3,1},	/* 5MB   200ns*/
+	{0x0, 0, 0, 0}
+};
+
+static int
+nsp_msg(sc, ti, msg)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+	u_int msg;
+{
+	struct ncp_synch_data *sdp;
+	struct lun_info *li = ti->ti_li;
+	struct nsp_lun_info *nli = (void *) li;
+	u_int period, offset;
+	int i;
+
+	if ((msg & SCSI_LOW_MSG_SYNCH) == 0)
+		return 0;
+
+	period = li->li_maxsynch.period;
+	offset = li->li_maxsynch.offset;
+	if (sc->sc_iclkdiv == CLKDIVR_20M)
+		sdp = &ncp_sync_data_20M[0];
+	else
+		sdp = &ncp_sync_data_40M[0];
+
+	for (i = 0; sdp->max_period != 0; i ++, sdp ++)
+	{
+		if (period >= sdp->min_period && period <= sdp->max_period)
+			break;
+	}
+
+	if (period != 0 && sdp->max_period == 0)
+	{
+		/*
+		 * NO proper period/offset found,
+		 * Retry neg with the target.
+		 */
+		li->li_maxsynch.period = 0;
+		li->li_maxsynch.offset = 0;
+		nli->nli_reg_syncr = 0;
+		nli->nli_reg_ackwidth = 0;
+		return EINVAL;
+	}
+
+	nli->nli_reg_syncr = (sdp->chip_period << SYNCR_PERS) |
+			      (offset & SYNCR_OFFM);
+	nli->nli_reg_ackwidth = sdp->ack_width;
+	return 0;
+}
+
+static int
+nsp_lun_init(sc, ti, li)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+	struct lun_info *li;
+{
+	struct nsp_lun_info *nli = (void *) li;
+
+	li->li_maxsynch.period = 200 / 4;
+	li->li_maxsynch.offset = 15;
+	nli->nli_reg_syncr = 0;
+	nli->nli_reg_ackwidth = 0;
+	return 0;
+}	
+
+static __inline void
+nsp_start_timer(sc, time)
+	struct nsp_softc *sc;
+	int time;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+
+	sc->sc_timer = time;
+	nsp_cr_write_1(bst, bsh, NSPR_TIMERCNT, time);
+}
+
+/**************************************************************
+ * General probe attach
+ **************************************************************/
+int
+nspprobesubr(iot, ioh, dvcfg)
+	bus_space_tag_t iot;
+	bus_space_handle_t ioh;
+	u_int dvcfg;
+{
+	u_int8_t regv;
+
+	regv = bus_space_read_1(iot, ioh, nsp_fifosr);
+	if (regv < 0x11 || regv >= 0x20)
+		return 0;
+	return 1;
+}
+
+int
+nspprint(aux, name)
+	void *aux;
+	const char *name;
+{
+
+	if (name != NULL)
+		printf("%s: scsibus ", name);
+	return UNCONF;
+}
+
+void
+nspattachsubr(sc)
+	struct nsp_softc *sc;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+
+	printf("\n");
+
+	sc->sc_idbit = (1 << slp->sl_hostid);
+	slp->sl_funcs = &nspfuncs;
+	if (sc->sc_memh != NULL)
+		sc->sc_xmode = NSP_MID_SMIT;
+	else
+		sc->sc_xmode = NSP_PIO;
+
+	(void) scsi_low_attach(slp, 2, NSP_NTARGETS, NSP_NLUNS,
+			       sizeof(struct nsp_lun_info));
+}
+
+/**************************************************************
+ * PDMA functions
+ **************************************************************/
+static u_int
+nsp_fifo_count(sc)
+	struct nsp_softc *sc;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	u_int count;
+
+	nsp_cr_write_1(bst, bsh, NSPR_PTCLRR, PTCLRR_PT);
+	count = bus_space_read_1(bst, bsh, nsp_datar);
+	count += (((u_int) bus_space_read_1(bst, bsh, nsp_datar)) << 8);
+	count += (((u_int) bus_space_read_1(bst, bsh, nsp_datar)) << 16);
+	return count;
+}
+
+static void
+nsp_setup_fifo(sc, on)
+	struct nsp_softc *sc;
+	int on;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	u_int8_t xfermode;
+
+	if (on != 0)
+		xfermode = XFERMR_XEN | XFERMR_FIFOEN;
+	else
+		xfermode = 0;
+
+	if ((slp->sl_scp.scp_datalen % DEV_BSIZE) != 0)
+	{
+		sc->sc_mask = 0;
+		xfermode |= XFERMR_IO8;
+	}
+	else
+	{
+		sc->sc_mask = 3;
+		if (sc->sc_xmode == NSP_MID_SMIT)
+			xfermode |= XFERMR_MEM32;
+		else
+			xfermode |= XFERMR_IO32;
+	}
+
+	sc->sc_xfermr = xfermode;
+	nsp_cr_write_1(bst, bsh, NSPR_XFERMR, sc->sc_xfermr);
+}
+
+static __inline void
+nsp_pdma_end(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	struct slccb *cb = ti->ti_nexus;
+	u_int len = 0, cnt;
+
+	slp->sl_flags &= ~HW_PDMASTART;
+	nsp_setup_fifo(sc, 0);
+
+	if (ti->ti_phase == PH_DATA)
+	{
+		cnt = nsp_fifo_count(sc);
+		if (slp->sl_scp.scp_direction  == SCSI_LOW_WRITE)
+		{
+			len = sc->sc_cnt - cnt;
+			if (slp->sl_scp.scp_datalen + len <= 
+			    cb->ccb_scp.scp_datalen)
+			{
+				slp->sl_scp.scp_data -= len;
+				slp->sl_scp.scp_datalen += len;
+			}
+			else
+			{
+				slp->sl_error |= PDMAERR;
+				printf("%s len %x >= datalen %x\n",
+					slp->sl_xname,
+					len, slp->sl_scp.scp_datalen);
+			}
+		}
+		else if (slp->sl_scp.scp_direction == SCSI_LOW_READ)
+		{
+			if (sc->sc_cnt != cnt)
+			{
+				slp->sl_error |= PDMAERR;
+				printf("%s: data read count error %x != %x\n",
+					slp->sl_xname, sc->sc_cnt, cnt);
+			}
+		}
+		sc->sc_cnt = cnt;
+	}
+	else
+	{
+
+		printf("%s data phase miss\n", slp->sl_xname);
+		slp->sl_error |= PDMAERR;
+	}
+}
+
+#define	RFIFO_CRIT	64
+#define	WFIFO_CRIT	64
+
+static void
+nsp_pio_read(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	int s;
+	int tout = 0;
+#ifdef __FreeBSD__
+	struct callout_handle ch;
+#endif
+	u_int res, ocount, mask = sc->sc_mask;
+	u_int8_t stat, fstat;
+
+	slp->sl_flags |= HW_PDMASTART;
+	ocount = sc->sc_cnt;
+
+#ifdef __FreeBSD__
+	ch = timeout(settimeout, &tout, 2 * hz);
+#else
+	timeout(settimeout, &tout, 2 * hz);
+#endif
+	while (slp->sl_scp.scp_datalen > 0 && tout == 0)
+	{
+		stat = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+		stat &= SCBUSMON_PHMASK;
+		res = nsp_fifo_count(sc) - ocount;
+		if (res == 0)
+		{
+			if (stat == PHASE_DATAIN)
+				continue;
+			break;
+		}
+
+		fstat = bus_space_read_1(bst, bsh, nsp_fifosr);
+		if ((fstat & FIFOSR_FULLEMP) == 0 && stat == PHASE_DATAIN)
+			continue;
+
+		if (res > slp->sl_scp.scp_datalen)
+			break;
+
+		if (res >= NSP_BUFFER_SIZE)
+			res = NSP_BUFFER_SIZE;
+		else
+			res &= ~mask;
+
+		if (sc->sc_xfermr & XFERMR_MEM32)
+		{
+			bus_space_read_region_4(sc->sc_memt, 
+						sc->sc_memh,
+						0, 
+					(u_int32_t *) slp->sl_scp.scp_data, 
+						res >> 2);
+		}
+		else
+		{
+			if (mask != 0)
+				bus_space_read_multi_4(bst, bsh, nsp_fifodr,
+					(u_int32_t *) slp->sl_scp.scp_data,
+						       res >> 2);
+			else 
+				bus_space_read_multi_1(bst, bsh, nsp_fifodr,
+					(u_int8_t *) slp->sl_scp.scp_data,
+						       res);
+		}
+
+		slp->sl_scp.scp_data += res;
+		slp->sl_scp.scp_datalen -= res;
+		ocount += res;
+	}
+
+	sc->sc_cnt = ocount;
+	s = splhigh();
+	if (tout == 0) {
+#ifdef __FreeBSD__
+		untimeout(settimeout, &tout, ch);
+#else
+		untimeout(settimeout, &tout);
+#endif
+		splx(s);
+	} else {
+		splx(s);
+		printf("%s pio read timeout\n", slp->sl_xname);
+	}
+}
+
+static void
+nsp_pio_write(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	u_int res, ocount, mask = sc->sc_mask;
+	int s;
+	int tout = 0;
+	register u_int8_t stat;
+#ifdef __FreeBSD__
+	struct callout_handle ch;
+#endif
+
+	ocount = sc->sc_cnt;
+	slp->sl_flags |= HW_PDMASTART;
+#ifdef __FreeBSD__
+	ch = timeout(settimeout, &tout, 2 * hz);
+#else
+	timeout(settimeout, &tout, 2 * hz);
+#endif
+	while (slp->sl_scp.scp_datalen > 0 && tout == 0)
+	{
+		stat = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+		stat &= SCBUSMON_PHMASK;
+		if (stat != PHASE_DATAOUT)
+			break;
+
+		res = ocount - nsp_fifo_count(sc);
+		if (res > 0)
+			continue;
+
+		res = (slp->sl_scp.scp_datalen > WFIFO_CRIT) ? WFIFO_CRIT :
+						  slp->sl_scp.scp_datalen;
+
+		if (sc->sc_xfermr & XFERMR_MEM32)
+		{
+			bus_space_write_region_4(sc->sc_memt, 
+						 sc->sc_memh,
+						 0,
+					(u_int32_t *) slp->sl_scp.scp_data, 
+						 res >> 2);
+		}
+		else
+		{
+			if (mask != 0)
+				bus_space_write_multi_4(bst, bsh, nsp_fifodr,
+				(u_int32_t *) slp->sl_scp.scp_data, res >> 2);
+			else
+				bus_space_write_multi_1(bst, bsh, nsp_fifodr,
+				(u_int8_t *) slp->sl_scp.scp_data, res);
+		}
+
+		slp->sl_scp.scp_datalen -= res;
+		slp->sl_scp.scp_data += res;
+		ocount += res;
+	}
+
+	sc->sc_cnt = ocount;
+	s = splhigh();
+	if (tout == 0) {
+#ifdef __FreeBSD__
+		untimeout(settimeout, &tout, ch);
+#else
+		untimeout(settimeout, &tout);
+#endif
+		splx(s);
+	} else {
+		splx(s);
+		printf("%s pio write timeout\n", slp->sl_xname);
+	}
+}
+
+static void
+settimeout(arg)
+	void *arg;
+{
+	int *tout = arg;
+
+	*tout = 1;
+}
+
+static int
+nsp_negate_signal(sc, mask, s)
+	struct nsp_softc *sc;
+	u_int8_t mask;
+	u_char *s;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	int tout = 0;
+	int s;
+#ifdef __FreeBSD__
+	struct callout_handle ch;
+#endif
+	u_int8_t regv;
+
+#ifdef __FreeBSD__
+	ch = timeout(settimeout, &tout, hz/2);
+#else
+	timeout(settimeout, &tout, hz/2);
+#endif
+	do 
+	{
+		regv = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+		if (regv == 0xff)
+			break;
+	}
+	while ((regv & mask) != 0 && tout == 0);
+
+	s = splhigh();
+	if (tout == 0) {
+#ifdef __FreeBSD__
+		untimeout(settimeout, &tout, ch);
+#else
+		untimeout(settimeout, &tout);
+#endif
+		splx(s);
+	} else {
+		splx(s);
+		printf("%s: %s singla off timeout \n", slp->sl_xname, s);
+	}
+
+	return 0;
+}
+
+static int
+nsp_xfer(sc, buf, len, phase)
+	struct nsp_softc *sc;
+	u_int8_t *buf;
+	int len;
+	int phase;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	int ptr, rv, atn;
+
+	atn = (scsi_low_is_msgout_continue(slp->sl_nexus) != 0);
+	for (ptr = 0; len > 0; len --, ptr ++)
+	{
+		rv = nsp_expect_signal(sc, phase, SCBUSMON_REQ);
+		if (rv <= 0)
+			goto out;
+
+		if (len == 1 && atn == 0)
+		{
+			nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR,
+				       SCBUSCR_ADIR | SCBUSCR_ACKEN);
+		}
+
+		if (phase & SCBUSMON_IO)
+		{
+			buf[ptr] = nsp_cr_read_1(bst, bsh, NSPR_DATAACK);
+		}
+		else
+		{
+			nsp_cr_write_1(bst, bsh, NSPR_DATAACK, buf[ptr]);
+		}
+		nsp_negate_signal(sc, SCBUSMON_ACK, "xfer<ACK>");
+	}
+
+out:
+	return len;
+}
+
+static int
+nsp_dataphase_bypass(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	struct slccb *cb = ti->ti_nexus;
+	u_int cnt;
+
+	if (slp->sl_scp.scp_direction != SCSI_LOW_READ ||
+	    (slp->sl_scp.scp_datalen % DEV_BSIZE) == 0)
+		return 0;
+
+	cnt = nsp_fifo_count(sc);
+	if (sc->sc_cnt == cnt)
+		return 0;
+	if (cnt >= DEV_BSIZE)
+		return EINVAL;
+
+	if (cb == NULL)
+		return 0;
+
+	/*
+	 * XXX: NSP_QUIRK
+	 * Data phase skip only occures in case of SCSI_LOW_READ.
+	 */
+	SCSI_LOW_SETUP_PHASE(ti, PH_DATA);
+	nsp_pio_read(sc, ti);
+	nsp_pdma_end(sc, ti);
+#ifdef	NSP_STATICS
+	nsp_statics[ti->ti_id].data_phase_bypass ++;
+#endif	/* NSP_STATICS */
+	return 0;
+}	
+	    
+/**************************************************************
+ * disconnect & reselect (HW low)
+ **************************************************************/
+static int
+nsp_reselected(sc)
+	struct nsp_softc *sc;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	struct targ_info *ti;
+	u_int sid;
+	u_int8_t cr;
+
+	sid = (u_int) nsp_cr_read_1(bst, bsh, NSPR_RESELR);
+	sid &= ~sc->sc_idbit;
+	sid = ffs(sid) - 1;
+	if ((ti = scsi_low_reselected(slp, sid)) == NULL)
+		return EJUSTRETURN;
+
+	nsp_negate_signal(sc, SCBUSMON_SEL, "reselect<SEL>");
+
+	cr = nsp_cr_read_1(bst, bsh, NSPR_SCBUSCR) & ~(SCBUSCR_BSY | SCBUSCR_ATN);
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, cr);
+	nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, cr | SCBUSCR_ADIR | SCBUSCR_ACKEN);
+
+#ifdef	NSP_STATICS
+	nsp_statics[sid].reselect ++;
+#endif	/* NSP_STATCIS */
+	return EJUSTRETURN;
+}
+
+static __inline int
+nsp_disconnected(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+
+#ifdef	NSP_STATICS
+	if (slp->sl_msgphase == MSGPH_DISC)
+		nsp_statics[ti->ti_id].disconnect ++;
+#endif	/* NSP_STATICS */
+
+	scsi_low_disconnected(slp, ti);
+	return 1;
+}
+
+/**************************************************************
+ * SEQUENCER
+ **************************************************************/
+static void nspmsg __P((struct nsp_softc *, u_char *, u_int8_t, u_int8_t, u_int8_t));
+
+static void
+nspmsg(sc, s, isrc, ph, irqphs)
+	struct nsp_softc *sc;
+	u_char *s;
+	u_int8_t isrc, ph, irqphs;
+{
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+
+	printf("%s: %s\n", slp->sl_xname, s);
+	printf("%s: isrc 0x%x scmon 0x%x irqphs 0x%x\n",
+	       slp->sl_xname, (u_int) isrc, (u_int) ph, (u_int) irqphs);
+}
+
+static int
+nsp_nexus(sc, ti)
+	struct nsp_softc *sc;
+	struct targ_info *ti;
+{
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	struct nsp_lun_info *nli = (void *) ti->ti_li;
+
+	/* setup synch transfer registers */
+	nsp_cr_write_1(bst, bsh, NSPR_SYNCR, nli->nli_reg_syncr);
+	nsp_cr_write_1(bst, bsh, NSPR_ACKWIDTH, nli->nli_reg_ackwidth);
+
+	/* setup pdma fifo */
+	nsp_setup_fifo(sc, 1);
+
+	/* clear ack counter */
+	sc->sc_cnt = 0;
+	nsp_cr_write_1(bst, bsh, NSPR_PTCLRR, PTCLRR_PT | PTCLRR_ACK |
+			PTCLRR_REQ | PTCLRR_HOST);
+	return 0;
+}
+
+int
+nspintr(arg)
+	void *arg;
+{
+	struct nsp_softc *sc = arg;
+	struct scsi_low_softc *slp = &sc->sc_sclow;
+	bus_space_tag_t bst = sc->sc_iot;
+	bus_space_handle_t bsh = sc->sc_ioh;
+	struct targ_info *ti;
+	struct physio_proc *pp;
+	struct buf *bp;
+	int len, rv;
+	u_int8_t isrc, ph, irqphs, cr, regv;
+
+	/*******************************************
+	 * interrupt check
+	 *******************************************/
+	if (slp->sl_flags & HW_INACTIVE)
+		return 0;
+
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_IRQDIS);
+	isrc = bus_space_read_1(bst, bsh, nsp_irqsr);
+	if (isrc == 0xff || (isrc & IRQSR_MASK) == 0)
+	{
+		bus_space_write_1(bst, bsh, nsp_irqcr, 0);
+		return 0;
+	}
+
+	/* XXX: IMPORTANT
+ 	 * Do not read an irqphs register if no scsi phase interrupt.
+	 * Unless, you should lose a scsi phase interrupt.
+	 */
+	ph = nsp_cr_read_1(bst, bsh, NSPR_SCBUSMON);
+	if ((isrc & IRQSR_SCSI) != 0)
+	{
+		irqphs = nsp_cr_read_1(bst, bsh, NSPR_IRQPHS);
+	}
+	else
+		irqphs = 0;
+
+	/*
+ 	 * timer interrupt handler (scsi vs timer interrupts)
+	 */
+	if (sc->sc_timer != 0)
+	{
+		nsp_cr_write_1(bst, bsh, NSPR_TIMERCNT, 0);
+		nsp_cr_write_1(bst, bsh, NSPR_TIMERCNT, 0);
+		sc->sc_timer = 0;
+	}
+	
+	if ((isrc & IRQSR_MASK) == IRQSR_TIMER && sc->sc_seltout == 0)
+	{
+		bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_TIMERCL);
+		return 1;
+	}
+
+	bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_TIMERCL | IRQCR_FIFOCL);
+
+	/*******************************************
+	 * debug section
+	 *******************************************/
+#ifdef	NSP_DEBUG
+	if (nsp_debug)
+	{
+		nspmsg(sc, "current status", isrc, ph, irqphs);
+		scsi_low_print(slp, NULL);
+		if (nsp_debug > 1)
+			Debugger();
+	}
+#endif	/* NSP_DEBUG */
+
+	/*******************************************
+	 * Parse hardware SCSI irq reasons register
+	 *******************************************/
+	if ((isrc & IRQSR_SCSI) != 0)
+	{
+ 		if ((irqphs & IRQPHS_RST) != 0)
+		{
+			scsi_low_restart(slp, SCSI_LOW_RESTART_SOFT, 
+					 "bus reset (power off?)");
+			return 1;
+		}
+
+		if ((irqphs & IRQPHS_RSEL) != 0)
+		{
+			bus_space_write_1(bst, bsh, nsp_irqcr, IRQCR_RESCL);
+			if (nsp_reselected(sc) == EJUSTRETURN)
+				return 1;
+		}
+
+		if ((irqphs & (IRQPHS_PCHG | IRQPHS_LBF)) == 0)
+			return 1; 
+	}
+
+	/*******************************************
+	 * nexus check
+	 *******************************************/
+	if ((ti = slp->sl_nexus) == NULL)
+	{
+		/* unknown scsi phase changes */
+		nspmsg(sc, "unknown scsi phase changes", isrc, ph, irqphs);
+		return 0;
+	}
+
+	/*******************************************
+	 * aribitration & selection
+	 *******************************************/
+	switch (ti->ti_phase)
+	{
+	case PH_SELSTART:
+		if ((ph & SCBUSMON_BSY) == 0)
+		{
+			if (sc->sc_seltout >= NSP_SELTIMEOUT)
+			{
+				sc->sc_seltout = 0;
+				nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, 0);
+				return nsp_disconnected(sc, ti);
+			}
+			sc->sc_seltout ++;
+			nsp_start_timer(sc, 1000 / 51);
+			return 1;
+		}
+
+		/* attention assert */
+		sc->sc_seltout = 0;
+		SCSI_LOW_SETUP_PHASE(ti, PH_SELECTED);
+		nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, sc->sc_busc);
+		delay(1);
+		nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, 
+				sc->sc_busc | SCBUSCR_ADIR | SCBUSCR_ACKEN);
+
+		SCSI_LOW_TARGET_ASSERT_ATN(ti);
+		scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_IDENTIFY, 0);
+		return 1;
+
+	case PH_RESEL:
+		if ((ph & SCBUSMON_PHMASK) != PHASE_MSGIN)
+		{
+			scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 1);
+			return 1;
+		}
+		/* fall */
+
+	default:
+		if ((isrc & (IRQSR_SCSI | IRQSR_FIFO)) == 0)
+			return 1;
+		break;
+	}
+
+	/*******************************************
+	 * scsi seq
+	 *******************************************/
+	if (slp->sl_flags & HW_PDMASTART)
+		nsp_pdma_end(sc, ti);
+
+	/* normal disconnect */
+	if (slp->sl_msgphase != 0 && (irqphs & IRQPHS_LBF) != 0)
+		return nsp_disconnected(sc, ti);
+
+	/* check unexpected bus free state */
+	if (ph == 0)
+	{
+		nspmsg(sc, "unexpected bus free", isrc, ph, irqphs);
+		return nsp_disconnected(sc, ti);
+	}
+		
+	/* check normal scsi phase */
+	switch (ph & SCBUSMON_PHMASK)
+	{
+	case PHASE_CMD:
+		if ((ph & SCBUSMON_REQ) == 0)
+			return 1;
+
+		SCSI_LOW_SETUP_PHASE(ti, PH_CMD);
+		if (scsi_low_cmd(slp, ti) != 0)
+			break;
+
+		nsp_cr_write_1(bst, bsh, NSPR_CMDCR, CMDCR_PTCLR);
+		for (len = 0; len < slp->sl_scp.scp_cmdlen; len ++)
+			nsp_cr_write_1(bst, bsh, NSPR_CMDDR,
+				       slp->sl_scp.scp_cmd[len]);
+
+		nsp_cr_write_1(bst, bsh, NSPR_CMDCR, CMDCR_PTCLR | CMDCR_EXEC);
+		break;
+
+	case PHASE_DATAOUT:
+		SCSI_LOW_SETUP_PHASE(ti, PH_DATA);
+		if (scsi_low_data(slp, ti, &bp, SCSI_LOW_WRITE) != 0)
+			break;
+	
+		pp = physio_proc_enter(bp);
+		nsp_pio_write(sc, ti);
+		physio_proc_leave(pp);
+		break;
+
+	case PHASE_DATAIN:
+		SCSI_LOW_SETUP_PHASE(ti, PH_DATA);
+		if (scsi_low_data(slp, ti, &bp, SCSI_LOW_READ) != 0)
+			break;
+
+		pp = physio_proc_enter(bp);
+		nsp_pio_read(sc, ti);
+		physio_proc_leave(pp);
+		break;
+
+	case PHASE_STATUS:
+		nsp_dataphase_bypass(sc, ti);
+		if ((ph & SCBUSMON_REQ) == 0)
+			return 1;
+
+		SCSI_LOW_SETUP_PHASE(ti, PH_STAT);
+		ti->ti_status = nsp_cr_read_1(bst, bsh, NSPR_DATAACK);
+		break;
+
+	case PHASE_MSGOUT:
+		if ((ph & SCBUSMON_REQ) == 0)
+			goto timerout;
+
+		/*
+		 * XXX: NSP QUIRK
+		 * NSP invoke interrupts only in the case of scsi phase changes,
+		 * therefore we should poll the scsi phase here to catch 
+		 * the next "msg out" if exists (no scsi phase changes).
+		 */
+		rv = len = 16;
+		do {
+			SCSI_LOW_SETUP_PHASE(ti, PH_MSGOUT);
+
+			len = scsi_low_msgout(slp, ti);
+			if (nsp_xfer(sc, ti->ti_msgoutstr, len, PHASE_MSGOUT))
+			{
+				scsi_low_assert_msg(slp, ti, 
+						    SCSI_LOW_MSG_RESET, 0);
+				nspmsg(sc, "MSGOUT: xfer short",
+						    isrc, ph, irqphs);
+			}
+
+			/* catch a next signal */
+			rv = nsp_expect_signal(sc, PHASE_MSGOUT, SCBUSMON_REQ);
+		}
+		while (rv > 0 && len -- > 0);
+		break;
+
+	case PHASE_MSGIN:
+		nsp_dataphase_bypass(sc, ti);
+		if ((ph & SCBUSMON_REQ) == 0)
+			goto timerout;
+
+		SCSI_LOW_SETUP_PHASE(ti, PH_MSGIN);
+
+		/*
+		 * XXX: NSP QUIRK
+		 * NSP invoke interrupts only in the case of scsi phase changes,
+		 * therefore we should poll the scsi phase here to catch 
+		 * the next "msg in" if exists (no scsi phase changes).
+		 */
+		rv = len = 16;
+		do {
+			/* read a data */
+			regv = nsp_cr_read_1(bst, bsh, NSPR_DATA);
+
+			/* assert ack */
+			cr = nsp_cr_read_1(bst, bsh, NSPR_SCBUSCR);
+			cr |= SCBUSCR_ACK;
+			nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, cr);
+			nsp_negate_signal(sc, SCBUSMON_REQ, "msgin<REQ>");
+
+			scsi_low_msgin(slp, ti, regv);
+
+			/* deassert ack */
+			cr = nsp_cr_read_1(bst, bsh, NSPR_SCBUSCR);
+			cr &= ~SCBUSCR_ACK;
+			nsp_cr_write_1(bst, bsh, NSPR_SCBUSCR, cr);
+
+			/* catch a next signal */
+			rv = nsp_expect_signal(sc, PHASE_MSGIN, SCBUSMON_REQ);
+		} 
+		while (rv > 0 && len -- > 0);
+		break;
+
+	case PHASE_SEL:
+	default:
+		nspmsg(sc, "unknown scsi phase", isrc, ph, irqphs);
+		break;
+	}
+
+	return 1;
+
+timerout:
+	nsp_start_timer(sc, 1000 / 102);
+	return 0;
+}
diff --git a/sys/dev/nsp/nsp_pccard.c b/sys/dev/nsp/nsp_pccard.c
new file mode 100644
index 0000000..10e5b1b
--- /dev/null
+++ b/sys/dev/nsp/nsp_pccard.c
@@ -0,0 +1,414 @@
+/*	$FreeBSD$	*/
+/*	$NecBSD: nsp_pisa.c,v 1.4 1999/04/15 01:35:54 kmatsuda Exp $	*/
+/*	$NetBSD$	*/
+
+/*
+ * [Ported for FreeBSD]
+ *  Copyright (c) 2000
+ *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
+ *      All rights reserved.
+ * [NetBSD for NEC PC-98 series]
+ *  Copyright (c) 1998
+ *	NetBSD/pc98 porting staff. 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. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/disklabel.h>
+#if defined(__FreeBSD__) && __FreeBSD_version >= 500001
+#include <sys/bio.h>
+#endif
+#include <sys/buf.h>
+#include <sys/queue.h>
+#include <sys/malloc.h>
+#include <sys/errno.h>
+
+#include <vm/vm.h>
+
+#include <machine/bus.h>
+#include <i386/isa/isa_device.h>
+
+#include <machine/dvcfg.h>
+
+#if defined(__FreeBSD__) && __FreeBSD_version < 400001
+static struct nsp_softc *nsp_get_softc(int);
+extern struct nsp_softc *nspdata[];
+#define DEVPORT_ALLOCSOFTCFUNC	nsp_get_softc
+#define DEVPORT_SOFTCARRAY	nspdata
+#endif
+#include <sys/device_port.h>
+
+#include <cam/scsi/scsi_low.h>
+#include <cam/scsi/scsi_low_pisa.h>
+
+#include <dev/nsp/nspreg.h>
+#include <dev/nsp/nspvar.h>
+#if defined(__NetBSD__) || (defined(__FreeBSD__) && __FreeBSD_version < 400001)
+#include "nsp.h"
+#endif
+
+#define	NSP_HOSTID	7
+
+/* pccard support */
+
+#include "apm.h"
+#if NAPM > 0
+#include 	<machine/apm_bios.h>
+#endif
+
+#include	"card.h"
+#if NCARD > 0
+#include	<sys/kernel.h>
+#include	<sys/module.h>
+#include	<sys/select.h>
+#include 	<pccard/cardinfo.h>
+#include	<pccard/slot.h>
+
+#define	PIO_MODE 1                 /* pd_flags */
+
+static int nspprobe(DEVPORT_PDEVICE devi);
+static int nspattach(DEVPORT_PDEVICE devi);
+
+static	int	nsp_card_intr	__P((DEVPORT_PDEVICE));
+static	void	nsp_card_unload	__P((DEVPORT_PDEVICE));
+#if defined(__FreeBSD__) && __FreeBSD_version < 400001
+static	int	nsp_card_init	__P((DEVPORT_PDEVICE));
+#endif
+
+#if defined(__FreeBSD__) && __FreeBSD_version >= 400001
+/*
+ * Additional code for FreeBSD new-bus PCCard frontend
+ */
+
+static void
+nsp_pccard_intr(void * arg)
+{
+	nspintr(arg);
+}
+
+static void
+nsp_release_resource(DEVPORT_PDEVICE dev)
+{
+	struct nsp_softc	*sc = device_get_softc(dev);
+
+	if (sc->nsp_intrhand) {
+		bus_teardown_intr(dev, sc->irq_res, sc->nsp_intrhand);
+	}
+
+	if (sc->port_res) {
+		bus_release_resource(dev, SYS_RES_IOPORT,
+				     sc->port_rid, sc->port_res);
+	}
+
+	if (sc->irq_res) {
+		bus_release_resource(dev, SYS_RES_IRQ,
+				     sc->irq_rid, sc->irq_res);
+	}
+
+	if (sc->mem_res) {
+		bus_release_resource(dev, SYS_RES_MEMORY,
+				     sc->mem_rid, sc->mem_res);
+	}
+}
+
+static int
+nsp_alloc_resource(DEVPORT_PDEVICE dev)
+{
+	struct nsp_softc	*sc = device_get_softc(dev);
+	u_long			maddr, msize;
+	int			error;
+
+	sc->port_rid = 0;
+	sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->port_rid,
+					  0, ~0, NSP_IOSIZE,RF_ACTIVE);
+	if (sc->port_res == NULL) {
+		nsp_release_resource(dev);
+		return(ENOMEM);
+	}
+
+	sc->irq_rid = 0;
+	sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid,
+					 0, ~0, 1, RF_ACTIVE);
+	if (sc->irq_res == NULL) {
+		nsp_release_resource(dev);
+		return(ENOMEM);
+	}
+
+	/* no need to allocate memory if PIO mode */
+	if ((DEVPORT_PDEVFLAGS(dev) & PIO_MODE) != 0) {
+		return(0);
+	}
+
+	error = bus_get_resource(dev, SYS_RES_MEMORY, 0, &maddr, &msize);
+	if (error) {
+		return(0);	/* XXX */
+	}
+
+	/* no need to allocate memory if not configured */
+	if (maddr == 0 || msize == 0) {
+		return(0);
+	}
+
+	sc->mem_rid = 0;
+	sc->mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->mem_rid,
+					 0, ~0, msize, RF_ACTIVE);
+	if (sc->mem_res == NULL) {
+		nsp_release_resource(dev);
+		return(ENOMEM);
+	}
+
+	return(0);
+}
+
+static int
+nsp_pccard_probe(DEVPORT_PDEVICE dev)
+{
+	struct nsp_softc	*sc = device_get_softc(dev);
+	int			error;
+
+	bzero(sc, sizeof(struct nsp_softc));
+
+	error = nsp_alloc_resource(dev);
+	if (error) {
+		return(error);
+	}
+
+	if (nspprobe(dev) == 0) {
+		nsp_release_resource(dev);
+		return(ENXIO);
+	}
+
+	nsp_release_resource(dev);
+
+	return(0);
+}
+
+static int
+nsp_pccard_attach(DEVPORT_PDEVICE dev)
+{
+	struct nsp_softc	*sc = device_get_softc(dev);
+	int			error;
+
+	error = nsp_alloc_resource(dev);
+	if (error) {
+		return(error);
+	}
+
+	error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CAM,
+			       nsp_pccard_intr, (void *)sc, &sc->nsp_intrhand);
+	if (error) {
+		nsp_release_resource(dev);
+		return(error);
+	}
+
+	if (nspattach(dev) == 0) {
+		nsp_release_resource(dev);
+		return(ENXIO);
+	}
+
+	return(0);
+}
+
+static	void
+nsp_pccard_detach(DEVPORT_PDEVICE dev)
+{
+	nsp_card_unload(dev);
+	nsp_release_resource(dev);
+}
+
+static device_method_t nsp_pccard_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		nsp_pccard_probe),
+	DEVMETHOD(device_attach,	nsp_pccard_attach),
+	DEVMETHOD(device_detach,	nsp_pccard_detach),
+
+	{ 0, 0 }
+};
+
+static driver_t nsp_pccard_driver = {
+	"nsp",
+	nsp_pccard_methods,
+	sizeof(struct nsp_softc),
+};
+
+static devclass_t nsp_devclass;
+
+DRIVER_MODULE(nsp, pccard, nsp_pccard_driver, nsp_devclass, 0, 0);
+
+#else
+
+PCCARD_MODULE(nsp, nsp_card_init,nsp_card_unload, nsp_card_intr,0, cam_imask);
+
+#endif
+
+#if defined(__FreeBSD__) && __FreeBSD_version < 400001
+static struct nsp_softc *
+nsp_get_softc(int unit)
+{
+	struct nsp_softc *sc;
+
+	if (unit >= NNSP) {
+		return(NULL);
+	}
+
+	if (nspdata[unit] == NULL) {
+		sc = malloc(sizeof(struct nsp_softc), M_TEMP,M_NOWAIT);
+		if (sc == NULL) {
+			printf("nsp_get_softc: cannot malloc!\n");
+			return(NULL);
+		}
+		nspdata[unit] = sc;
+	} else {
+		sc = nspdata[unit];
+	}
+
+	return(sc);
+}
+
+static	int
+nsp_card_init(DEVPORT_PDEVICE devi)
+{
+	int unit = DEVPORT_PDEVUNIT(devi);
+
+	if (NNSP <= unit)
+		return (ENODEV);
+
+	if (nspprobe(devi) == 0)
+		return (ENXIO);
+
+	if (nspattach(devi) == 0)
+		return (ENXIO);
+	
+	return (0);
+}
+#endif
+
+static	void
+nsp_card_unload(DEVPORT_PDEVICE devi)
+{
+	struct nsp_softc *sc = DEVPORT_PDEVGET_SOFTC(devi);
+
+	printf("%s: unload\n",sc->sc_sclow.sl_xname);
+	scsi_low_deactivate((struct scsi_low_softc *)sc);
+        scsi_low_dettach(&sc->sc_sclow);
+}
+
+static	int
+nsp_card_intr(DEVPORT_PDEVICE devi)
+{
+	nspintr(DEVPORT_PDEVGET_SOFTC(devi));
+	return 1;
+}
+
+static	int
+nspprobe(DEVPORT_PDEVICE devi)
+{
+	int rv;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 400001
+	struct nsp_softc *sc = device_get_softc(devi);
+
+	rv = nspprobesubr(rman_get_bustag(sc->port_res),
+			  rman_get_bushandle(sc->port_res),
+			  DEVPORT_PDEVFLAGS(devi));
+#else
+	rv = nspprobesubr(I386_BUS_SPACE_IO,
+			  DEVPORT_PDEVIOBASE(devi), DEVPORT_PDEVFLAGS(devi));
+#endif
+
+	return rv;
+}
+
+static	int
+nspattach(DEVPORT_PDEVICE devi)
+{
+#if defined(__FreeBSD__) && __FreeBSD_version < 400001
+	int unit = DEVPORT_PDEVUNIT(devi);
+#endif
+	struct nsp_softc *sc;
+	struct scsi_low_softc *slp;
+	u_int32_t flags = DEVPORT_PDEVFLAGS(devi);
+	u_int	iobase = DEVPORT_PDEVIOBASE(devi);
+	char	dvname[16];
+
+	strcpy(dvname,"nsp");
+
+#if defined(__FreeBSD__) && __FreeBSD_version < 400001
+	if (unit >= NNSP)
+	{
+		printf("%s: unit number too high\n",dvname);
+		return(0);
+	}
+#endif
+
+	if (iobase == 0)
+	{
+		printf("%s: no ioaddr is given\n", dvname);
+		return (0);
+	}
+
+	sc = DEVPORT_PDEVALLOC_SOFTC(devi);
+	if (sc == NULL) {
+		return (0);
+	}
+
+	slp = &sc->sc_sclow;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 400001
+	slp->sl_dev = devi;
+	sc->sc_iot = rman_get_bustag(sc->port_res);
+	sc->sc_ioh = rman_get_bushandle(sc->port_res);
+#else
+	bzero(sc, sizeof(struct nsp_softc));
+	strcpy(slp->sl_dev.dv_xname, dvname);
+	slp->sl_dev.dv_unit = unit;
+	sc->sc_iot = I386_BUS_SPACE_IO;
+	sc->sc_ioh = iobase;
+#endif
+
+	if((flags & PIO_MODE) == 0) {
+#if defined(__FreeBSD__) && __FreeBSD_version >= 400001
+		sc->sc_memt = rman_get_bustag(sc->mem_res);
+		sc->sc_memh = rman_get_bushandle(sc->mem_res);
+#else
+		sc->sc_memt = I386_BUS_SPACE_MEM;
+		sc->sc_memh = (bus_space_handle_t)DEVPORT_PDEVMADDR(devi);
+#endif
+	} else {
+		sc->sc_memh = 0;
+	}
+	/* slp->sl_irq = devi->pd_irq; */
+	sc->sc_iclkdiv = CLKDIVR_20M;
+	sc->sc_clkdiv = CLKDIVR_40M;
+
+	slp->sl_hostid = NSP_HOSTID;
+	slp->sl_cfgflags = flags;
+
+	nspattachsubr(sc);
+
+	sc->sc_ih = nspintr;
+
+	return(NSP_IOSIZE);
+}
+#endif /* NCARD>0 */
diff --git a/sys/dev/nsp/nspreg.h b/sys/dev/nsp/nspreg.h
new file mode 100644
index 0000000..9912a13
--- /dev/null
+++ b/sys/dev/nsp/nspreg.h
@@ -0,0 +1,201 @@
+/*	$FreeBSD$	*/
+/*	$NecBSD: nspreg.h,v 1.4 1999/04/15 01:35:55 kmatsuda Exp $	*/
+/*	$NetBSD$	*/
+
+/*
+ * [NetBSD for NEC PC-98 series]
+ *  Copyright (c) 1998
+ *	NetBSD/pc98 porting staff. 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. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef	_NSPREG_H_
+#define	_NSPREG_H_
+
+/* base registers */
+#define	nsp_irqcr	0
+#define	IRQCR_RESCL	0x01
+#define	IRQCR_PHCL	0x02
+#define	IRQCR_TIMERCL	0x04
+#define	IRQCR_FIFOCL	0x08
+#define	IRQCR_SCSIIDIS	0x10
+#define	IRQCR_EXTIDIS	0x20
+#define	IRQCR_TIMERIDIS	0x40
+#define	IRQCR_FIFOIDIS	0x80
+#define	IRQCR_ALLMASK	0xff
+#define	IRQCR_IRQDIS	0xf0
+
+#define	nsp_irqsr	0
+#define	IRQSR_SCSI	0x01
+#define	IRQSR_EXT	0x02
+#define	IRQSR_TIMER	0x04
+#define	IRQSR_FIFO	0x08
+#define	IRQSR_MASK	0x0f
+
+#define	nsp_ifselr	1
+#define	IFSELR_IFSEL	0x01
+#define	IFSELR_REGSEL	0x04
+
+#define	nsp_fifosr	1
+#define	FIFOSR_CHIPREVM	0x0f
+#define	FIFOSR_CHIPIDM	0x70
+#define	FIFOSR_FULLEMP	0x80
+
+#define	nsp_idxr	2
+#define	nsp_datar	3
+#define	nsp_fifodr	4
+
+/* indexed registers */
+#define	NSPR_EXTBUSC	0x10
+
+#define	NSPR_CLKDIVR	0x11
+#define	CLKDIVR_40M	0x02
+#define	CLKDIVR_20M	0x01
+
+#define	NSPR_TERMPWRC	0x13
+#define	TERMPWRC_POWON	0x01
+
+#define	NSPR_SCIENR	0x15
+#define	SCIENR_SCCHG	0x01
+#define	SCIENR_RESEL	0x10
+#define	SCIENR_FIFO	0x20
+#define	SCIENR_RST	0x40
+
+#define	NSPR_IRQPHS	0x16
+#define	IRQPHS_LMSG	0x01
+#define	IRQPHS_LIO	0x02
+#define	IRQPHS_LCD	0x04
+#define	IRQPHS_LBF	0x08
+#define	IRQPHS_PCHG	0x10
+#define	IRQPHS_RSEL	0x20
+#define	IRQPHS_FIFO	0x40
+#define	IRQPHS_RST	0x80
+
+#define	NSPR_TIMERCNT	0x17
+
+#define NSPR_SCBUSCR	0x18
+#define	SCBUSCR_SEL	0x01
+#define	SCBUSCR_RST	0x02
+#define	SCBUSCR_DOUT	0x04
+#define	SCBUSCR_ATN	0x08
+#define	SCBUSCR_ACK	0x10
+#define	SCBUSCR_BSY	0x20
+#define	SCBUSCR_ADIR	0x40
+#define	SCBUSCR_ACKEN	0x80
+
+#define	NSPR_SCBUSMON	0x19
+#define	SCBUSMON_MSG	0x01
+#define	SCBUSMON_IO	0x02
+#define	SCBUSMON_CD	0x04
+#define	SCBUSMON_BSY	0x08
+#define	SCBUSMON_ACK	0x10
+#define	SCBUSMON_REQ	0x20
+#define	SCBUSMON_SEL	0x40
+#define SCBUSMON_ATN	0x80
+
+#define	NSPR_SETARBIT	0x1A
+
+#define	NSPR_ARBITS	0x1A
+#define	ARBITS_EXEC	0x01
+#define	ARBITS_CLR	0x02
+#define	ARBITS_WIN	0x02
+#define	ARBITS_FAIL	0x04
+#define	ARBITS_RESEL	0x08
+
+#define	NSPR_PARITYR	0x1B	/* (W/R) */
+
+#define	NSPR_CMDCR	0x1C	/* (W) */
+#define	CMDCR_PTCLR	0x01
+#define	CMDCR_EXEC	0x02
+
+#define	NSPR_RESELR	0x1C	/* (R) */
+#define	NSPR_CMDDR	0x1D	/* (W/R) */
+
+#define	NSPR_PTCLRR	0x1E	/* (W) */
+#define	PTCLRR_PT	0x01
+#define	PTCLRR_ACK	0x02
+#define	PTCLRR_REQ	0x04
+#define	PTCLRR_HOST	0x08
+#define	PTCLRR_RSS	0x30
+
+#define	NSPR_XFERCR	0x1E	/* (R) */
+
+#define	NSPR_XFERMR	0x20
+#define	XFERMR_MEM8	0x01
+#define	XFERMR_MEM32	0x02
+#define	XFERMR_ADR24	0x04
+#define	XFERMR_ADR32	0x08
+#define	XFERMR_IO8	0x10
+#define	XFERMR_IO32	0x20
+#define	XFERMR_XEN	0x40
+#define	XFERMR_FIFOEN	0x80
+
+#define	NSPR_SYNCR	0x21
+#define	SYNCR_OFFM	0x0f
+#define	SYNCR_PERM	0xf0
+#define	SYNCR_PERS	4
+
+#define	NSPR_DATA	0x22
+#define	NSPR_DATAACK	0x23
+#define	NSPR_OCR	0x26
+#define	OCR_ROMEN	0x01
+#define	OCR_TERMPWROUT	0x02
+#define	OCR_TERMPWRS	0x04
+
+#define NSPR_ACKWIDTH	0x27
+
+/* SCBUSMON phase defs */
+#define	SCBUSMON_FREE	0
+#define	SCBUSMON_CMD \
+	(SCBUSMON_BSY | SCBUSMON_CD | SCBUSMON_REQ)
+#define	SCBUSMON_MSGIN \
+	(SCBUSMON_BSY | SCBUSMON_MSG | SCBUSMON_IO | SCBUSMON_CD | SCBUSMON_REQ)
+#define	SCBUSMON_MSGOUT \
+	(SCBUSMON_BSY | SCBUSMON_MSG | SCBUSMON_CD | SCBUSMON_REQ)
+#define	SCBUSMON_DATAIN \
+	(SCBUSMON_BSY | SCBUSMON_IO | SCBUSMON_REQ)
+#define	SCBUSMON_DATAOUT \
+	(SCBUSMON_BSY | SCBUSMON_REQ)
+#define	SCBUSMON_STATUS \
+	(SCBUSMON_BSY | SCBUSMON_IO | SCBUSMON_CD | SCBUSMON_REQ)
+#define	SCBUSMON_RESELECT \
+	(SCBUSMON_SEL | SCBUSMON_IO)
+#define	SCBUSMON_PHMASK \
+	(SCBUSMON_SEL | SCBUSMON_CD | SCBUSMON_MSG | SCBUSMON_IO)
+
+/* SCSI phase */
+#define	PHASE_CMD	(SCBUSMON_CMD & SCBUSMON_PHMASK)
+#define	PHASE_DATAIN	(SCBUSMON_DATAIN & SCBUSMON_PHMASK)
+#define	PHASE_DATAOUT	(SCBUSMON_DATAOUT & SCBUSMON_PHMASK)
+#define	PHASE_STATUS	(SCBUSMON_STATUS & SCBUSMON_PHMASK)
+#define	PHASE_MSGIN	(SCBUSMON_MSGIN & SCBUSMON_PHMASK)
+#define	PHASE_MSGOUT	(SCBUSMON_MSGOUT & SCBUSMON_PHMASK)
+#define	PHASE_SEL	(SCBUSMON_SEL | SCBUSMON_IO)
+
+/* Size */
+#define	NSP_MEMSIZE	NBPG
+#define	NSP_IOSIZE	16
+#define	NSP_BUFFER_SIZE	512
+#endif	/* !_NSPREG_H_ */
diff --git a/sys/dev/nsp/nspvar.h b/sys/dev/nsp/nspvar.h
new file mode 100644
index 0000000..078f1b9
--- /dev/null
+++ b/sys/dev/nsp/nspvar.h
@@ -0,0 +1,102 @@
+/*	$FreeBSD$	*/
+/*	$NecBSD: nspvar.h,v 1.7 1999/04/15 01:35:55 kmatsuda Exp $	*/
+/*	$NetBSD$	*/
+
+/*
+ * [NetBSD for NEC PC-98 series]
+ *  Copyright (c) 1998
+ *	NetBSD/pc98 porting staff. 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. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef	_NSPVAR_H_
+#define	_NSPVAR_H_
+
+/*****************************************************************
+ * Host adapter structure
+ *****************************************************************/
+struct nsp_softc {
+	struct scsi_low_softc sc_sclow;		/* generic data */
+
+	bus_space_tag_t sc_iot;
+	bus_space_handle_t sc_ioh;
+	bus_space_tag_t sc_memt;
+	bus_space_handle_t sc_memh;
+
+	void *sc_ih;
+
+	int sc_seltout;				/* selection timeout counter */
+	int sc_timer;				/* timer start */
+
+	int sc_xmode;
+#define	NSP_HIGH_SMIT		2		/* write address data mode */
+#define	NSP_MID_SMIT		1		/* mem access */
+#define	NSP_PIO			0		/* io access */
+
+	u_int sc_idbit;				/* host id bit pattern */
+	u_int sc_mask;				/* bus width mask */
+	u_int sc_cnt;				/* fifo R/W count (host) */
+	u_int8_t sc_iclkdiv;			/* scsi chip clock divisor */
+	u_int8_t sc_clkdiv;			/* asic chip clock divisor */
+	u_int8_t sc_xfermr;			/* fifo control reg */
+	u_int8_t sc_icr;			/* interrupt control reg */
+
+	u_int8_t sc_busc;			/* busc registers */
+	u_long sc_ringp;			/* data buffer ring pointer */
+#if defined (__FreeBSD__) && __FreeBSD_version >= 400001
+	int port_rid;
+	int irq_rid;
+	int mem_rid;
+	struct resource *port_res;
+	struct resource *irq_res;
+	struct resource *mem_res;
+	void *nsp_intrhand;
+#endif
+};
+
+/*****************************************************************
+ * Lun information 
+ *****************************************************************/
+struct nsp_lun_info {
+	struct lun_info nli_li;			/* generic lun info */
+
+	u_int8_t nli_reg_syncr;			/* sync registers per devices */
+	u_int8_t nli_reg_ackwidth;		/* ackwidth per devices */
+};
+
+/*****************************************************************
+ * Proto
+ *****************************************************************/
+int nspprobesubr __P((bus_space_tag_t, bus_space_handle_t, u_int));
+void nspattachsubr __P((struct nsp_softc *));
+int nspprint __P((void *, const char *));
+int nspintr __P((void *));
+
+#if	defined(i386)
+#define	SOFT_INTR_REQUIRED(slp)	(softintr((slp)->sl_irq))
+#else	/* !i386 */
+#define	SOFT_INTR_REQUIRED(slp)
+#endif	/* !i386 */
+#endif	/* !_NSPVAR_H_ */