Remove stg(4) driver

stg(4) is marked as gone in 12. Remove it. There are no sightings of
it in the nycbug dmesg database. It was for an obscure SCSI card that
sold mostly in Japan, and was especially popilar among pc98 hackers in
the 4.x time frame. It was also only enabled on i386.

Relnote: Yes

15 files changed, 0 insertions, 2319 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 49f585e69ed3..2e5facf8b309 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -504,7 +504,6 @@ MAN=	aac.4 \
 	sppp.4 \
 	ste.4 \
 	stf.4 \
-	stg.4 \
 	stge.4 \
 	sym.4 \
 	syncache.4 \
diff --git a/share/man/man4/stg.4 b/share/man/man4/stg.4
deleted file mode 100644
index 1d088b0077a6..000000000000
--- a/share/man/man4/stg.4
+++ /dev/null
@@ -1,110 +0,0 @@
-.\"
-.\" Copyright (c) 2003 Bob Bishop
-.\" 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. 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.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd August 8, 2004
-.Dt STG 4
-.Os
-.Sh NAME
-.Nm stg
-.Nd driver for Future Domain based SCSI controllers
-.Sh SYNOPSIS
-To compile this driver into the kernel,
-place the following lines in your
-kernel configuration file:
-.Bd -ragged -offset indent
-.Cd "device scbus"
-.Cd "device stg"
-.Pp
-For one or more ISA cards:
-.Cd "device isa"
-.Pp
-In
-.Pa /boot/device.hints :
-.Cd hint.stg.0.at="isa"
-.Pp
-For one or more PCI cards:
-.Cd "device pci"
-.Ed
-.Pp
-Alternatively, to load the driver as a
-module at boot time, place the following line in
-.Xr loader.conf 5 :
-.Bd -literal -offset indent
-stg_load="YES"
-.Ed
-.Sh DESCRIPTION
-The
-.Nm
-driver provides support for ISA, PCCARD and PCI controllers based on
-Future Domain SCSI controller chips including the TMC-16C30, 16C50 and 32C60.
-.Sh HARDWARE
-Controllers supported by the
-.Nm
-driver include:
-.Pp
-.Bl -bullet -compact
-.It
-Adaptec 2920/A
-.It
-Future Domain SCSI2GO
-.It
-Future Domain TMC-18XX/3260
-.It
-IBM SCSI PCMCIA Card
-.It
-ICM PSC-2401 SCSI
-.It
-MELCO IFC-SC
-.It
-RATOC REX-5536, REX-5536AM, REX-5536M, REX-9836A
-.El
-.Pp
-Note that the Adaptec 2920C is supported by the
-.Xr ahc 4
-driver.
-.Sh SEE ALSO
-.Xr ahc 4 ,
-.Xr cd 4 ,
-.Xr ch 4 ,
-.Xr da 4 ,
-.Xr intro 4 ,
-.Xr sa 4 ,
-.Xr scsi 4
-.Sh HISTORY
-The
-.Nm
-device driver has been developed for
-.Nx Ns / Ns Tn pc98
-and ported for
-.Fx .
-It first appeared in
-.Fx 2.2
-with PAO and merged in
-.Fx 4.2 .
-.Sh AUTHORS
-The
-.Nm
-driver was written by
-.An Naofumi HONDA .
diff --git a/sys/amd64/conf/NOTES b/sys/amd64/conf/NOTES
index d0eb324d7676..fdf691e05f86 100644
--- a/sys/amd64/conf/NOTES
+++ b/sys/amd64/conf/NOTES
@@ -426,13 +426,6 @@ options 	TWA_DEBUG		# 0-10; 10 prints the most messages.
 device		twa			# 3ware 9000 series PATA/SATA RAID
 
 #
-# SCSI host adapters:
-#
-# stg: TMC 18C30, 18C50 based SCSI host adapters.
-
-device		stg
-
-#
 # Adaptec FSA RAID controllers, including integrated DELL controllers,
 # the Dell PERC 2/QC and the HP NetRAID-4M
 device		aac
diff --git a/sys/conf/files b/sys/conf/files
index e710aa1d1e90..71a5341769fb 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -113,7 +113,6 @@ cam/ctl/scsi_ctl.c		optional ctl
 cam/mmc/mmc_xpt.c		optional scbus mmccam
 cam/mmc/mmc_da.c		optional scbus mmccam da
 cam/scsi/scsi_da.c		optional da
-cam/scsi/scsi_low.c		optional stg
 cam/scsi/scsi_pass.c		optional pass
 cam/scsi/scsi_pt.c		optional pt
 cam/scsi/scsi_sa.c		optional sa
@@ -3137,11 +3136,6 @@ dev/spibus/spibus.c		optional spibus				\
 dev/spibus/spigen.c		optional spigen
 dev/spibus/spibus_if.m		optional spibus
 dev/ste/if_ste.c		optional ste pci
-dev/stg/tmc18c30.c		optional stg
-dev/stg/tmc18c30_isa.c		optional stg isa
-dev/stg/tmc18c30_pccard.c	optional stg pccard
-dev/stg/tmc18c30_pci.c		optional stg pci
-dev/stg/tmc18c30_subr.c		optional stg
 dev/stge/if_stge.c		optional stge
 dev/sym/sym_hipd.c		optional sym				\
 	dependency	"$S/dev/sym/sym_{conf,defs}.h"
diff --git a/sys/dev/stg/tmc18c30.c b/sys/dev/stg/tmc18c30.c
deleted file mode 100644
index bb4ed932bd99..000000000000
--- a/sys/dev/stg/tmc18c30.c
+++ /dev/null
@@ -1,1330 +0,0 @@
-/*	$NecBSD: tmc18c30.c,v 1.28.12.3 2001/06/19 04:35:48 honda Exp $	*/
-/*	$NetBSD$	*/
-
-#define	STG_DEBUG
-#define	STG_STATICS
-#define	STG_IO_CONTROL_FLAGS	(STG_FIFO_INTERRUPTS | STG_WAIT_FOR_SELECT)
-
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001
- *	Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998, 1999
- *	Kouichi Matsuda. 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/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/bio.h>
-#include <sys/buf.h>
-#include <sys/queue.h>
-#include <sys/malloc.h>
-#include <sys/errno.h>
-#include <sys/rman.h>
-
-#include <machine/cpu.h>
-#include <machine/bus.h>
-
-#include <cam/scsi/scsi_low.h>
-#include <dev/stg/tmc18c30reg.h>
-#include <dev/stg/tmc18c30var.h>
-
-/***************************************************
- * USER SETTINGS
- ***************************************************/
-/* DEVICE CONFIGURATION FLAGS (MINOR)
- *
- * 0x01   DISCONNECT OFF
- * 0x02   PARITY LINE OFF
- * 0x04   IDENTIFY MSG OFF ( = single lun)
- * 0x08   SYNC TRANSFER OFF
- */
-/* #define	STG_SYNC_SUPPORT */	/* NOT YET but easy */
-
-/* For the 512 fifo type: change below */
-#define	TMC18C30_FIFOSZ	0x800
-#define	TMC18C30_FCBSZ	0x200
-#define	TMC18C50_FIFOSZ	0x2000
-#define	TMC18C50_FCBSZ	0x400
-
-#define	STG_MAX_DATA_SIZE	(64 * 1024)
-#define	STG_DELAY_MAX			(2 * 1000 * 1000)
-#define	STG_DELAY_INTERVAL		(1)
-#define	STG_DELAY_SELECT_POLLING_MAX	(5 * 1000 * 1000)
-
-/***************************************************
- * PARAMS
- ***************************************************/
-#define	STG_NTARGETS	8
-#define	STG_NLUNS	8
-
-/***************************************************
- * DEBUG
- ***************************************************/
-#ifdef	STG_DEBUG
-static int stg_debug;
-#endif	/* STG_DEBUG */
-
-#ifdef	STG_STATICS
-static struct stg_statics {
-	int arbit_fail_0;
-	int arbit_fail_1;
-	int disconnect;
-	int reselect;
-} stg_statics;
-#endif	/* STG_STATICS */
-
-/***************************************************
- * IO control flags
- ***************************************************/
-#define	STG_FIFO_INTERRUPTS	0x0001
-#define	STG_WAIT_FOR_SELECT	0x0100
-
-int stg_io_control = STG_IO_CONTROL_FLAGS;
-
-/***************************************************
- * DEVICE STRUCTURE
- ***************************************************/
-extern struct cfdriver stg_cd;
-
-/**************************************************************
- * DECLARE
- **************************************************************/
-/* static */
-static void stg_pio_read(struct stg_softc *, struct targ_info *, u_int);
-static void stg_pio_write(struct stg_softc *, struct targ_info *, u_int);
-static int stg_xfer(struct stg_softc *, u_int8_t *, int, int, int);
-static int stg_msg(struct stg_softc *, struct targ_info *, u_int);
-static int stg_reselected(struct stg_softc *);
-static int stg_disconnected(struct stg_softc *, struct targ_info *);
-static __inline void stg_pdma_end(struct stg_softc *, struct targ_info *);
-static int stghw_select_targ_wait(struct stg_softc *, int);
-static int stghw_check(struct stg_softc *);
-static void stghw_init(struct stg_softc *);
-static int stg_negate_signal(struct stg_softc *, u_int8_t, u_char *);
-static int stg_expect_signal(struct stg_softc *, u_int8_t, u_int8_t);
-static int stg_world_start(struct stg_softc *, int);
-static int stghw_start_selection(struct stg_softc *sc, struct slccb *);
-static void stghw_bus_reset(struct stg_softc *);
-static void stghw_attention(struct stg_softc *);
-static int stg_target_nexus_establish(struct stg_softc *);
-static int stg_lun_nexus_establish(struct stg_softc *);
-static int stg_ccb_nexus_establish(struct stg_softc *);
-static int stg_targ_init(struct stg_softc *, struct targ_info *, int);
-static __inline void stghw_bcr_write_1(struct stg_softc *, u_int8_t);
-static int stg_timeout(struct stg_softc *);
-static void stg_selection_done_and_expect_msgout(struct stg_softc *);
-
-struct scsi_low_funcs stgfuncs = {
-	SC_LOW_INIT_T stg_world_start,
-	SC_LOW_BUSRST_T stghw_bus_reset,
-	SC_LOW_TARG_INIT_T stg_targ_init,
-	SC_LOW_LUN_INIT_T NULL,
-
-	SC_LOW_SELECT_T stghw_start_selection,
-	SC_LOW_NEXUS_T stg_lun_nexus_establish,
-	SC_LOW_NEXUS_T stg_ccb_nexus_establish,
-
-	SC_LOW_ATTEN_T stghw_attention,
-	SC_LOW_MSG_T stg_msg,
-
-	SC_LOW_TIMEOUT_T stg_timeout,
-	SC_LOW_POLL_T stgintr,
-
-	NULL,
-};
-
-/****************************************************
- * hwfuncs
- ****************************************************/
-static __inline void 
-stghw_bcr_write_1(struct stg_softc *sc, u_int8_t bcv)
-{
-
-	bus_write_1(sc->port_res, tmc_bctl, bcv);
-	sc->sc_busimg = bcv;
-}
-
-static int
-stghw_check(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	u_int fcbsize, fcb;
-	u_int16_t lsb, msb;
-
-	lsb = bus_read_1(sc->port_res, tmc_idlsb);
-	msb = bus_read_1(sc->port_res, tmc_idmsb);
-	switch (msb << 8 | lsb)
-	{
-		case 0x6127:
-			/* TMCCHIP_1800 not supported. (it's my policy) */
-			sc->sc_chip = TMCCHIP_1800;
-			return EINVAL;
-
-		case 0x60e9:
-			if (bus_read_1(sc->port_res, tmc_cfg2) & 0x02)
-			{
-				sc->sc_chip = TMCCHIP_18C30;
-				sc->sc_fsz = TMC18C30_FIFOSZ;
-				fcbsize = TMC18C30_FCBSZ;
-			}
-			else
-			{
-				sc->sc_chip = TMCCHIP_18C50;
-				sc->sc_fsz = TMC18C50_FIFOSZ;
-				fcbsize = TMC18C50_FCBSZ;
-			}
-			break;
-
-		default:
-			sc->sc_chip = TMCCHIP_UNK;
-			return ENODEV;
-	}
-
-	sc->sc_fcRinit = FCTL_INTEN;
-	sc->sc_fcWinit = FCTL_PARENB | FCTL_INTEN;
-
-	if (slp->sl_cfgflags & CFG_NOATTEN)
-		sc->sc_imsg = 0;
-	else
-		sc->sc_imsg = BCTL_ATN;
-	sc->sc_busc = BCTL_BUSEN;
-
-	sc->sc_wthold = fcbsize + 256;
-	sc->sc_rthold = fcbsize - 256;
-	sc->sc_maxwsize = sc->sc_fsz;
-
-	fcb = fcbsize / (sc->sc_fsz / 16);
-	sc->sc_icinit = ICTL_CD | ICTL_SEL | ICTL_ARBIT | fcb;
-	return 0;
-}
-
-static void
-stghw_init(sc)
-	struct stg_softc *sc;
-{
-
-	bus_write_1(sc->port_res, tmc_ictl, 0);
-	stghw_bcr_write_1(sc, BCTL_BUSFREE);
-	bus_write_1(sc->port_res, tmc_fctl,
-			  sc->sc_fcRinit | FCTL_CLRFIFO | FCTL_CLRINT);
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	bus_write_1(sc->port_res, tmc_ictl, sc->sc_icinit);
-
-	bus_write_1(sc->port_res, tmc_ssctl, 0);
-}
-
-static int
-stg_targ_init(sc, ti, action)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-	int action;
-{
-	struct stg_targ_info *sti = (void *) ti;
-
-	if (action == SCSI_LOW_INFO_ALLOC || action == SCSI_LOW_INFO_REVOKE)
-	{
-		ti->ti_width = SCSI_LOW_BUS_WIDTH_8;
-		ti->ti_maxsynch.period = 0;
-		ti->ti_maxsynch.offset = 0;
-		sti->sti_reg_synch = 0;
-	}
-	return 0;
-}	
-
-/****************************************************
- * scsi low interface
- ****************************************************/
-static void
-stghw_attention(sc)
-	struct stg_softc *sc;
-{
-
-	sc->sc_busc |= BCTL_ATN;
-	sc->sc_busimg |= BCTL_ATN;
-	bus_write_1(sc->port_res, tmc_bctl, sc->sc_busimg);
-	DELAY(10);
-}
-
-static void
-stghw_bus_reset(sc)
-	struct stg_softc *sc;
-{
-
-	bus_write_1(sc->port_res, tmc_ictl, 0);
-	bus_write_1(sc->port_res, tmc_fctl, 0);
-	stghw_bcr_write_1(sc, BCTL_RST);
-	DELAY(100000);
-	stghw_bcr_write_1(sc, BCTL_BUSFREE);
-}
-
-static int
-stghw_start_selection(sc, cb)
-	struct stg_softc *sc;
-	struct slccb *cb;
-{
-	struct targ_info *ti = cb->ti;
-	register u_int8_t stat;
-
-	sc->sc_tmaxcnt = cb->ccb_tcmax * 1000 * 1000;
-	sc->sc_dataout_timeout = 0;
-	sc->sc_ubf_timeout = 0;
-	stghw_bcr_write_1(sc, BCTL_BUSFREE);
-	bus_write_1(sc->port_res, tmc_ictl, sc->sc_icinit);
-
-	stat = bus_read_1(sc->port_res, tmc_astat);
-	if ((stat & ASTAT_INT) != 0)
-	{
-		return SCSI_LOW_START_FAIL;
-	}
-
-	bus_write_1(sc->port_res, tmc_scsiid, sc->sc_idbit);
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit | FCTL_ARBIT);
-
-	SCSI_LOW_SETUP_PHASE(ti, PH_ARBSTART);
-	return SCSI_LOW_START_OK;
-}
-
-static int
-stg_world_start(sc, fdone)
-	struct stg_softc *sc;
-	int fdone;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	int error;
-
-	if ((slp->sl_cfgflags & CFG_NOPARITY) == 0)
-		sc->sc_fcRinit |= FCTL_PARENB;
-	else
-		sc->sc_fcRinit &= ~FCTL_PARENB;
-
-	if ((error = stghw_check(sc)) != 0)
-		return error;
-
-	stghw_init(sc);
-	scsi_low_bus_reset(slp);
-	stghw_init(sc);
-
-	return 0;
-}
-
-static int
-stg_msg(sc, ti, msg)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-	u_int msg;
-{
-	struct stg_targ_info *sti = (void *) ti;
-	u_int period, offset;
-
-	if ((msg & SCSI_LOW_MSG_WIDE) != 0)
-	{
-		if (ti->ti_width != SCSI_LOW_BUS_WIDTH_8)
-		{
-			ti->ti_width = SCSI_LOW_BUS_WIDTH_8;
-			return EINVAL;
-		}
-		return 0;
-	}
-
-	if ((msg & SCSI_LOW_MSG_SYNCH) == 0)
-		return 0;
-
- 	period = ti->ti_maxsynch.period;
-	offset = ti->ti_maxsynch.offset;
-	period = period << 2;
-	if (period >= 200)
-	{
-		sti->sti_reg_synch = (period - 200) / 50;
-		if (period % 50)
-			sti->sti_reg_synch ++;
-		sti->sti_reg_synch |= SSCTL_SYNCHEN;
-	}
-	else if (period >= 100)
-	{
-		sti->sti_reg_synch = (period - 100) / 50;
-		if (period % 50)
-			sti->sti_reg_synch ++;
-		sti->sti_reg_synch |= SSCTL_SYNCHEN | SSCTL_FSYNCHEN;
-	}
-	bus_write_1(sc->port_res, tmc_ssctl, sti->sti_reg_synch);
-	return 0;
-}
-
-/**************************************************************
- * General probe attach
- **************************************************************/
-int
-stgprobesubr(struct resource *res, u_int dvcfg)
-{
-	u_int16_t lsb, msb;
-
-	lsb = bus_read_1(res, tmc_idlsb);
-	msb = bus_read_1(res, tmc_idmsb);
-	switch (msb << 8 | lsb)
-	{
-		default:
-			return 0;
-		case 0x6127:
-			/* not support! */
-			return 0;
-		case 0x60e9:
-			return 1;
-	}
-	return 0;
-}
-
-void
-stgattachsubr(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-
-	printf("\n");
-
-	sc->sc_idbit = (1 << slp->sl_hostid); 
-	slp->sl_funcs = &stgfuncs;
-	sc->sc_tmaxcnt = SCSI_LOW_MIN_TOUT * 1000 * 1000; /* default */
-
-	slp->sl_flags |= HW_READ_PADDING;
-	slp->sl_cfgflags |= CFG_ASYNC;	/* XXX */
-
-	(void) scsi_low_attach(slp, 0, STG_NTARGETS, STG_NLUNS,
-				sizeof(struct stg_targ_info), 0);
-	gone_in(12, "stg(4) driver");
-}
-
-/**************************************************************
- * PDMA functions
- **************************************************************/
-static __inline void
-stg_pdma_end(sc, ti)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct slccb *cb = slp->sl_Qnexus;
-	u_int len, tres;
-
-	slp->sl_flags &= ~HW_PDMASTART;
-	sc->sc_icinit &= ~ICTL_FIFO;
-	sc->sc_dataout_timeout = 0;
-
-	if (cb == NULL)
-	{
-		slp->sl_error |= PDMAERR;
-		goto out;
-	}
-
-	if (ti->ti_phase == PH_DATA)
-	{
-		len = bus_read_2(sc->port_res, tmc_fdcnt);
-		if (slp->sl_scp.scp_direction == SCSI_LOW_WRITE)
-		{
-			if (len != 0)
-			{
-				tres = len + slp->sl_scp.scp_datalen;
-				if (tres <= (u_int) cb->ccb_scp.scp_datalen)
-				{
-					slp->sl_scp.scp_data -= len;
-					slp->sl_scp.scp_datalen = tres;
-				}
-				else
-				{
-					slp->sl_error |= PDMAERR;
-					device_printf(slp->sl_dev,
-						"len %x >= datalen %x\n",
-						len, slp->sl_scp.scp_datalen);
-				}
-			}
-		}
-		else if (slp->sl_scp.scp_direction == SCSI_LOW_READ)
-		{
-			if (len != 0)
-			{
-				slp->sl_error |= PDMAERR;
-				device_printf(slp->sl_dev,
-				    "len %x left in fifo\n", len);
-			}
-		}
-		scsi_low_data_finish(slp);
-	}
-	else
-	{
-
-		device_printf(slp->sl_dev, "data phase miss\n");
-		slp->sl_error |= PDMAERR;
-	}
-
-out:
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-}
-
-static void
-stg_pio_read(sc, ti, thold)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-	u_int thold;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct sc_p *sp = &slp->sl_scp;
-	int tout;
-	u_int res;
-	u_int8_t stat;
-
-	if ((slp->sl_flags & HW_PDMASTART) == 0)
-	{
-		bus_write_1(sc->port_res, tmc_fctl,
-				  sc->sc_fcRinit | FCTL_FIFOEN);
-		slp->sl_flags |= HW_PDMASTART;
-	}
-
-	tout = sc->sc_tmaxcnt;
-	while (tout -- > 0)
-	{
-		if (thold > 0)
-		{
-			res = bus_read_2(sc->port_res, tmc_fdcnt);
-			if (res < thold)
-			{
-				bus_write_1(sc->port_res, tmc_ictl,
-						  sc->sc_icinit);
-				break;
-			}
-		}
-		else
-		{
-			stat = bus_read_1(sc->port_res, tmc_bstat);
-			res = bus_read_2(sc->port_res, tmc_fdcnt);
-			if (res == 0)
-			{
-				if ((stat & PHASE_MASK) != DATA_IN_PHASE)
-					break;
-				if (sp->scp_datalen <= 0)
-					break;
-				DELAY(1);
-				continue;
-			}
-		}
-
-		/* The assumtion res != 0 is valid here */
-		if (res > sp->scp_datalen)
-		{
-			if (res == (u_int) -1)
-				break;
-
-			slp->sl_error |= PDMAERR;
-			if ((slp->sl_flags & HW_READ_PADDING) == 0)
-			{
-				device_printf(slp->sl_dev,
-				    "read padding required\n");
-				break;
-			}
-
-			sp->scp_datalen = 0;
-			if (res > STG_MAX_DATA_SIZE)
-				res = STG_MAX_DATA_SIZE;
-			while (res -- > 0)
-			{
-				(void) bus_read_1(sc->port_res, tmc_rfifo);
-			}
-			continue;
-		}
-
-		sp->scp_datalen -= res;
-		if (res & 1)
-		{
-			*sp->scp_data = bus_read_1(sc->port_res, tmc_rfifo);
-			sp->scp_data ++;
-			res --;
-		}
-
-		bus_read_multi_2(sc->port_res, tmc_rfifo,
-				       (u_int16_t *) sp->scp_data, res >> 1);
-		sp->scp_data += res;
-	}
-
-	if (tout <= 0)
-		device_printf(slp->sl_dev, "pio read timeout\n");
-}
-
-static void
-stg_pio_write(sc, ti, thold)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-	u_int thold;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct sc_p *sp = &slp->sl_scp;
-	u_int res;
-	int tout;
-	register u_int8_t stat;
-
-	if ((slp->sl_flags & HW_PDMASTART) == 0)
-	{
-		stat = sc->sc_fcWinit | FCTL_FIFOEN | FCTL_FIFOW;
-		bus_write_1(sc->port_res, tmc_fctl, stat | FCTL_CLRFIFO);
-		bus_write_1(sc->port_res, tmc_fctl, stat);
-		slp->sl_flags |= HW_PDMASTART;
-	}
-
-	tout = sc->sc_tmaxcnt;
-	while (tout -- > 0)
-	{
-		stat = bus_read_1(sc->port_res, tmc_bstat);
-		if ((stat & PHASE_MASK) != DATA_OUT_PHASE)
-			break;
-
-		if (sp->scp_datalen <= 0)
-		{
-			if (sc->sc_dataout_timeout == 0)
-				sc->sc_dataout_timeout = SCSI_LOW_TIMEOUT_HZ;
-			break;
-		}
-
-		if (thold > 0)
-		{
-			res = bus_read_2(sc->port_res, tmc_fdcnt);
-			if (res > thold)
-			{
-				bus_write_1(sc->port_res, tmc_ictl,
-						  sc->sc_icinit);
-				break;
-			}
-		}
-		else
-		{
-			res = bus_read_2(sc->port_res, tmc_fdcnt);
-			if (res > sc->sc_maxwsize / 2)
-			{
-				DELAY(1);
-				continue;
-			}
-		}
-			
-		if (res == (u_int) -1)
-			break;
-		res = sc->sc_maxwsize - res;
-		if (res > sp->scp_datalen)
-			res = sp->scp_datalen;
-
-		sp->scp_datalen -= res;
-		if ((res & 0x1) != 0)
-		{
-			bus_write_1(sc->port_res, tmc_wfifo, *sp->scp_data);
-			sp->scp_data ++;
-			res --;
-		}
-
-		bus_write_multi_2(sc->port_res, tmc_wfifo, 
-					(u_int16_t *) sp->scp_data, res >> 1);
-		sp->scp_data += res;
-	}
-
-	if (tout <= 0)
-		device_printf(slp->sl_dev, "pio write timeout\n");
-}
-
-static int
-stg_negate_signal(struct stg_softc *sc, u_int8_t mask, u_char *s)
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	int wc;
-	u_int8_t regv;
-
-	for (wc = 0; wc < STG_DELAY_MAX / STG_DELAY_INTERVAL; wc ++)
-	{
-		regv = bus_read_1(sc->port_res, tmc_bstat);
-		if (regv == (u_int8_t) -1)
-			return -1;
-		if ((regv & mask) == 0)
-			return 1;
-
-		DELAY(STG_DELAY_INTERVAL);
-	}
-
-	device_printf(slp->sl_dev, "%s stg_negate_signal timeout\n", s);
-	return -1;
-}
-
-static int
-stg_expect_signal(struct stg_softc *sc, u_int8_t phase, u_int8_t mask)
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	int wc;
-	u_int8_t ph;
-
-	phase &= PHASE_MASK;
-	for (wc = 0; wc < STG_DELAY_MAX / STG_DELAY_INTERVAL; wc ++)
-	{
-		ph = bus_read_1(sc->port_res, tmc_bstat);
-		if (ph == (u_int8_t) -1)
-			return -1;
-		if ((ph & PHASE_MASK) != phase)
-			return 0;
-		if ((ph & mask) != 0)
-			return 1;
-
-		DELAY(STG_DELAY_INTERVAL);
-	}
-
-	device_printf(slp->sl_dev, "stg_expect_signal timeout\n");
-	return -1;
-}
-
-static int
-stg_xfer(sc, buf, len, phase, clear_atn)
-	struct stg_softc *sc;
-	u_int8_t *buf;
-	int len;
-	int phase;
-	int clear_atn;
-{
-	int rv, ptr;
-
-	if (phase & BSTAT_IO)
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	else
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcWinit);
-
-	for (ptr = 0; len > 0; len --)
-	{
-		rv = stg_expect_signal(sc, phase, BSTAT_REQ);
-		if (rv <= 0)
-			goto bad;
-
-		if (len == 1 && clear_atn != 0)
-		{
-			sc->sc_busc &= ~BCTL_ATN;
-			stghw_bcr_write_1(sc, sc->sc_busc);
-			SCSI_LOW_DEASSERT_ATN(&sc->sc_sclow);
-		}
-
-		if (phase & BSTAT_IO)
-		{
-			buf[ptr ++] = bus_read_1(sc->port_res, tmc_rdata);
-		}
-		else
-		{
-			bus_write_1(sc->port_res, tmc_wdata, buf[ptr ++]);
-		}
-
-		stg_negate_signal(sc, BSTAT_ACK, "xfer<ACK>");
-	}
-
-bad:
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	return len;
-}
-
-/**************************************************************
- * disconnect & reselect (HW low)
- **************************************************************/
-static int
-stg_reselected(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	int tout;
-	u_int sid;
-	u_int8_t regv;
-
-	if (slp->sl_selid != NULL)
-	{
-		/* XXX:
-		 * Selection vs Reselection conflicts.
-		 */
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-		stghw_bcr_write_1(sc, BCTL_BUSFREE);
-	}
-	else if (slp->sl_Tnexus != NULL)
-	{
-		device_printf(slp->sl_dev, "unexpected termination\n");
-		stg_disconnected(sc, slp->sl_Tnexus);
-	}
-
-	/* XXX:
-	 * We should ack the reselection as soon as possible,
-	 * because the target would abort the current reselection seq 
-  	 * due to reselection timeout.
-	 */
-	tout = STG_DELAY_SELECT_POLLING_MAX;
-	while (tout -- > 0)
-	{
-		regv = bus_read_1(sc->port_res, tmc_bstat);
-		if ((regv & (BSTAT_IO | BSTAT_SEL | BSTAT_BSY)) == 
-			    (BSTAT_IO | BSTAT_SEL))
-		{
-			DELAY(1);
-			regv = bus_read_1(sc->port_res, tmc_bstat);
-			if ((regv & (BSTAT_IO | BSTAT_SEL | BSTAT_BSY)) == 
-				    (BSTAT_IO | BSTAT_SEL))
-				goto reselect_start;
-		}
-		DELAY(1);
-	}
-	device_printf(slp->sl_dev, "reselction timeout I\n");
-	return EJUSTRETURN;
-	
-reselect_start:
-	sid = (u_int) bus_read_1(sc->port_res, tmc_scsiid);
-	if ((sid & sc->sc_idbit) == 0)
-	{
-		/* not us */
-		return EJUSTRETURN;
-	}
-
-	bus_write_1(sc->port_res, tmc_fctl, 
-			    sc->sc_fcRinit | FCTL_CLRFIFO | FCTL_CLRINT);
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	stghw_bcr_write_1(sc, sc->sc_busc | BCTL_BSY);
-
-	while (tout -- > 0)
-	{
-		regv = bus_read_1(sc->port_res, tmc_bstat);
-		if ((regv & (BSTAT_SEL | BSTAT_BSY)) == BSTAT_BSY)
-			goto reselected;
-		DELAY(1);
-	}
-	device_printf(slp->sl_dev, "reselction timeout II\n");
-	return EJUSTRETURN;
-
-reselected:
-	sid &= ~sc->sc_idbit;
-	sid = ffs(sid) - 1;
-	if (scsi_low_reselected(slp, sid) == NULL)
-		return EJUSTRETURN;
-
-#ifdef	STG_STATICS
-	stg_statics.reselect ++;
-#endif	/* STG_STATICS */
-	return EJUSTRETURN;
-}
-
-static int
-stg_disconnected(sc, ti)
-	struct stg_softc *sc;
-	struct targ_info *ti;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-
-	/* clear bus status & fifo */
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit | FCTL_CLRFIFO);
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	stghw_bcr_write_1(sc, BCTL_BUSFREE);
-	sc->sc_icinit &= ~ICTL_FIFO;
-	sc->sc_busc &= ~BCTL_ATN;
-	sc->sc_dataout_timeout = 0;
-	sc->sc_ubf_timeout = 0;
-
-#ifdef	STG_STATICS
-	stg_statics.disconnect ++;
-#endif	/* STG_STATICS */
-	scsi_low_disconnected(slp, ti);
-	return 1;
-}
-
-/**************************************************************
- * SEQUENCER
- **************************************************************/
-static int
-stg_target_nexus_establish(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct targ_info *ti = slp->sl_Tnexus;
-	struct stg_targ_info *sti = (void *) ti;
-
-	bus_write_1(sc->port_res, tmc_ssctl, sti->sti_reg_synch);
-	if ((stg_io_control & STG_FIFO_INTERRUPTS) != 0)
-	{
-		sc->sc_icinit |= ICTL_FIFO;
-	}
-	return 0;
-}
-
-static int
-stg_lun_nexus_establish(sc)
-	struct stg_softc *sc;
-{
-
-	return 0;
-}
-
-static int
-stg_ccb_nexus_establish(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct slccb *cb = slp->sl_Qnexus;
-
-	sc->sc_tmaxcnt = cb->ccb_tcmax * 1000 * 1000;
-	return 0;
-}
-
-#define	STGHW_SELECT_INTERVAL	10
-
-static int
-stghw_select_targ_wait(sc, mu)
-	struct stg_softc *sc;
-	int mu;
-{
-
-	mu = mu / STGHW_SELECT_INTERVAL;
-	while (mu -- > 0)
-	{
-		if ((bus_read_1(sc->port_res, tmc_bstat) & BSTAT_BSY) == 0)
-		{
-			DELAY(STGHW_SELECT_INTERVAL);
-			continue;
-		}
-		DELAY(1);
-		if ((bus_read_1(sc->port_res, tmc_bstat) & BSTAT_BSY) != 0)
-		{
-			return 0;
-		}
-	}
-	return ENXIO;
-}
-
-static void
-stg_selection_done_and_expect_msgout(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit | FCTL_CLRFIFO);
-	bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-	stghw_bcr_write_1(sc, sc->sc_imsg | sc->sc_busc);
-	SCSI_LOW_ASSERT_ATN(slp);
-}
-
-int
-stgintr(arg)
-	void *arg;
-{
-	struct stg_softc *sc = arg;
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	struct targ_info *ti;
-	struct buf *bp;
-	u_int derror, flags;
-	int len;
-	u_int8_t status, astatus, regv;
-
-	/*******************************************
-	 * interrupt check
-	 *******************************************/
-	if (slp->sl_flags & HW_INACTIVE)
-		return 0;
-
-	astatus = bus_read_1(sc->port_res, tmc_astat);
-	status = bus_read_1(sc->port_res, tmc_bstat);
-
-	if ((astatus & ASTAT_STATMASK) == 0 || astatus == (u_int8_t) -1)
-		return 0;
-
-	bus_write_1(sc->port_res, tmc_ictl, 0);
-	if (astatus & ASTAT_SCSIRST)
-	{
-		bus_write_1(sc->port_res, tmc_fctl,
-				  sc->sc_fcRinit | FCTL_CLRFIFO);
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-		bus_write_1(sc->port_res, tmc_ictl, 0);
-
-		scsi_low_restart(slp, SCSI_LOW_RESTART_SOFT, 
-				 "bus reset (power off?)");
-		return 1;
-	}
-
-	/*******************************************
-	 * debug section
-	 *******************************************/
-#ifdef	STG_DEBUG
-	if (stg_debug)
-	{
-		scsi_low_print(slp, NULL);
-		device_printf(slp->sl_dev, "st %x ist %x\n\n",
-		       status, astatus);
-#ifdef	KDB
-		if (stg_debug > 1)
-			kdb_enter(KDB_WHY_CAM, "stg");
-#endif	/* KDB */
-	}
-#endif	/* STG_DEBUG */
-
-	/*******************************************
-	 * reselection & nexus
-	 *******************************************/
-	if ((status & RESEL_PHASE_MASK)== PHASE_RESELECTED)
-	{
-		if (stg_reselected(sc) == EJUSTRETURN)
-			goto out;
-	}
-
-	if ((ti = slp->sl_Tnexus) == NULL)
-		return 0;
-
-	derror = 0;
-	if ((astatus & ASTAT_PARERR) != 0 && ti->ti_phase != PH_ARBSTART &&
-	    (sc->sc_fcRinit & FCTL_PARENB) != 0)
-	{
-		slp->sl_error |= PARITYERR;
-		derror = SCSI_LOW_DATA_PE;
-		if ((status & PHASE_MASK) == MESSAGE_IN_PHASE)
-			scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_PARITY, 0);
-		else
-			scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ERROR, 1);
-	}
-
-	/*******************************************
-	 * aribitration & selection
-	 *******************************************/
-	switch (ti->ti_phase)
-	{
-	case PH_ARBSTART:
-		if ((astatus & ASTAT_ARBIT) == 0)
-		{
-#ifdef	STG_STATICS
-			stg_statics.arbit_fail_0 ++;
-#endif	/* STG_STATICS */
-			goto arb_fail;
-		}
-
-		status = bus_read_1(sc->port_res, tmc_bstat);
-		if ((status & BSTAT_IO) != 0)
-		{
-			/* XXX:
-			 * Selection vs Reselection conflicts.
-			 */
-#ifdef	STG_STATICS
-			stg_statics.arbit_fail_1 ++;
-#endif	/* STG_STATICS */
-arb_fail:
-			bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-			stghw_bcr_write_1(sc, BCTL_BUSFREE);
-			scsi_low_arbit_fail(slp, slp->sl_Qnexus);
-			goto out;
-		}
-
-		/*
-		 * selection assert start.
-		 */
-		SCSI_LOW_SETUP_PHASE(ti, PH_SELSTART);
-		scsi_low_arbit_win(slp);
-
-		bus_write_1(sc->port_res, tmc_scsiid,
-				  sc->sc_idbit | (1 << ti->ti_id));
-		stghw_bcr_write_1(sc, sc->sc_imsg | sc->sc_busc | BCTL_SEL);
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcWinit);
-		if ((stg_io_control & STG_WAIT_FOR_SELECT) != 0)
-		{
-			/* selection abort delay 200 + 100 micro sec */
-			if (stghw_select_targ_wait(sc, 300) == 0)
-			{
-				SCSI_LOW_SETUP_PHASE(ti, PH_SELECTED);
-				stg_selection_done_and_expect_msgout(sc);
-			}	
-		}
-		goto out;
-
-	case PH_SELSTART:
-		if ((status & BSTAT_BSY) == 0)
-		{
-			/* selection timeout delay 250 ms */
-			if (stghw_select_targ_wait(sc, 250 * 1000) != 0)
-			{
-				stg_disconnected(sc, ti);
-				goto out;
-			}
-		}
-
-		SCSI_LOW_SETUP_PHASE(ti, PH_SELECTED);
-		stg_selection_done_and_expect_msgout(sc);
-		goto out;
-
-	case PH_SELECTED:
-		if ((status & BSTAT_REQ) == 0)
-			goto out;
-		stg_target_nexus_establish(sc);
-		break;
-
-	case PH_RESEL:
-		if ((status & BSTAT_REQ) == 0)
-			goto out;
-
-		/* clear a busy line */
-		bus_write_1(sc->port_res, tmc_fctl, sc->sc_fcRinit);
-		stghw_bcr_write_1(sc, sc->sc_busc);
-		stg_target_nexus_establish(sc);
-		if ((status & PHASE_MASK) != MESSAGE_IN_PHASE)
-		{
-			device_printf(slp->sl_dev,
-			    "unexpected phase after reselect\n");
-			slp->sl_error |= FATALIO;
-			scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 1);
-			goto out;
-		}
-		break;
-	}
-
-	/*******************************************
-	 * data phase
-	 *******************************************/
-	if ((slp->sl_flags & HW_PDMASTART) && STG_IS_PHASE_DATA(status) == 0)
-	{
-		if (slp->sl_scp.scp_direction == SCSI_LOW_READ)
-			stg_pio_read(sc, ti, 0);
-
-		stg_pdma_end(sc, ti);
-	}
-
-	/*******************************************
-	 * scsi seq
-	 *******************************************/
-	switch (status & PHASE_MASK)
-	{
-	case COMMAND_PHASE:
-		if (stg_expect_signal(sc, COMMAND_PHASE, BSTAT_REQ) <= 0)
-			break;
-
-		SCSI_LOW_SETUP_PHASE(ti, PH_CMD);
-		if (scsi_low_cmd(slp, ti) != 0)
-		{
-			scsi_low_attention(slp);
-		}
-
-		if (stg_xfer(sc, slp->sl_scp.scp_cmd, slp->sl_scp.scp_cmdlen,
-			     COMMAND_PHASE, 0) != 0)
-		{
-			device_printf(slp->sl_dev, "CMDOUT short\n");
-		}
-		break;
-
-	case DATA_OUT_PHASE:
-		SCSI_LOW_SETUP_PHASE(ti, PH_DATA);
-		if (scsi_low_data(slp, ti, &bp, SCSI_LOW_WRITE) != 0)
-		{
-			scsi_low_attention(slp);
-		}
-
-		if ((sc->sc_icinit & ICTL_FIFO) != 0)
-			stg_pio_write(sc, ti, sc->sc_wthold);
-		else
-			stg_pio_write(sc, ti, 0);
-		break;
-
-	case DATA_IN_PHASE:
-		SCSI_LOW_SETUP_PHASE(ti, PH_DATA);
-		if (scsi_low_data(slp, ti, &bp, SCSI_LOW_READ) != 0)
-		{
-			scsi_low_attention(slp);
-		}
-
-		if ((sc->sc_icinit & ICTL_FIFO) != 0)
-			stg_pio_read(sc, ti, sc->sc_rthold);
-		else
-			stg_pio_read(sc, ti, 0);
-		break;
-
-	case STATUS_PHASE:
-		regv = stg_expect_signal(sc, STATUS_PHASE, BSTAT_REQ);
-		if (regv <= 0)
-			break;
-
-		SCSI_LOW_SETUP_PHASE(ti, PH_STAT);
-		regv = bus_read_1(sc->port_res, tmc_sdna);
-		if (scsi_low_statusin(slp, ti, regv | derror) != 0)
-		{
-			scsi_low_attention(slp);
-		}
-		if (regv != bus_read_1(sc->port_res, tmc_rdata))
-		{
-			device_printf(slp->sl_dev, "STATIN: data mismatch\n");
-		}
-		stg_negate_signal(sc, BSTAT_ACK, "statin<ACK>");
-		break;
-
-	case MESSAGE_OUT_PHASE:
-		if (stg_expect_signal(sc, MESSAGE_OUT_PHASE, BSTAT_REQ) <= 0)
-			break;
-
-		SCSI_LOW_SETUP_PHASE(ti, PH_MSGOUT);
-		flags = (ti->ti_ophase != ti->ti_phase) ? 
-				SCSI_LOW_MSGOUT_INIT : 0;
-		len = scsi_low_msgout(slp, ti, flags);
-
-		if (len > 1 && slp->sl_atten == 0)
-		{
-			scsi_low_attention(slp);
-		}
-
-		if (stg_xfer(sc, ti->ti_msgoutstr, len, MESSAGE_OUT_PHASE,
-			     slp->sl_clear_atten) != 0)
-		{
-			device_printf(slp->sl_dev, "MSGOUT short\n");
-		}
-		else
-		{
-			if (slp->sl_msgphase >= MSGPH_ABORT) 
-			{
-				stg_disconnected(sc, ti);
-			}
-		}
-		break;
-
-	case MESSAGE_IN_PHASE:
-		/* confirm phase and req signal */
-		if (stg_expect_signal(sc, MESSAGE_IN_PHASE, BSTAT_REQ) <= 0)
-			break;
-
-		SCSI_LOW_SETUP_PHASE(ti, PH_MSGIN);
-
-		/* read data with NOACK */
-		regv = bus_read_1(sc->port_res, tmc_sdna);
-
-		if (scsi_low_msgin(slp, ti, derror | regv) == 0)
-		{
-			if (scsi_low_is_msgout_continue(ti, 0) != 0)
-			{
-				scsi_low_attention(slp);
-			}
-		}
-
-		/* read data with ACK */
-		if (regv != bus_read_1(sc->port_res, tmc_rdata))
-		{
-			device_printf(slp->sl_dev, "MSGIN: data mismatch\n");
-		}
-
-		/* wait for the ack negated */
-		stg_negate_signal(sc, BSTAT_ACK, "msgin<ACK>");
-
-		if (slp->sl_msgphase != 0 && slp->sl_msgphase < MSGPH_ABORT)
-		{
-			stg_disconnected(sc, ti);
-		}
-		break;
-
-	case BUSFREE_PHASE:
-		device_printf(slp->sl_dev, "unexpected disconnect\n");
-		stg_disconnected(sc, ti);
-		break;
-
-	default:
-		slp->sl_error |= FATALIO;
-		device_printf(slp->sl_dev, "unknown phase bus %x intr %x\n",
-		    status, astatus);
-		break;
-	}
-
-out:
-	bus_write_1(sc->port_res, tmc_ictl, sc->sc_icinit);
-	return 1;
-}
-
-static int
-stg_timeout(sc)
-	struct stg_softc *sc;
-{
-	struct scsi_low_softc *slp = &sc->sc_sclow;
-	int tout, count;
-	u_int8_t status;
-
-	if (slp->sl_Tnexus == NULL)
-		return 0;
-
-	status = bus_read_1(sc->port_res, tmc_bstat);
-	if ((status & PHASE_MASK) == 0)
-	{
-		if (sc->sc_ubf_timeout ++ == 0)
-			return 0;
-
-		device_printf(slp->sl_dev, "unexpected bus free detected\n");
-		slp->sl_error |= FATALIO;
-		scsi_low_print(slp, slp->sl_Tnexus);
-		stg_disconnected(sc, slp->sl_Tnexus);
-		return 0;
-	}
-
-	switch (status & PHASE_MASK)
-	{
-	case DATA_OUT_PHASE:
-		if (sc->sc_dataout_timeout == 0)
-			break;
-		if ((status & BSTAT_REQ) == 0)
-			break;
-		if (bus_read_2(sc->port_res, tmc_fdcnt) != 0)
-			break;
-		if ((-- sc->sc_dataout_timeout) > 0)
-			break;	
-
-	        slp->sl_error |= PDMAERR;
-		if ((slp->sl_flags & HW_WRITE_PADDING) == 0)
-		{
-			device_printf(slp->sl_dev, "write padding required\n");
-			break;
-		}	
-
-		bus_write_1(sc->port_res, tmc_ictl, 0);
-
-		tout = STG_DELAY_MAX;
-		while (tout --)
-		{
-			status = bus_read_1(sc->port_res, tmc_bstat);
-			if ((status & PHASE_MASK) != DATA_OUT_PHASE)
-				break;
-
-			if (bus_read_2(sc->port_res, tmc_fdcnt) != 0)
-			{
-				DELAY(1);
-				continue;
-			}
-
-			for (count = sc->sc_maxwsize; count > 0; count --)
-				bus_write_1(sc->port_res, tmc_wfifo, 0);
-		}
-
-		status = bus_read_1(sc->port_res, tmc_bstat);
-		if ((status & PHASE_MASK) == DATA_OUT_PHASE)
-			sc->sc_dataout_timeout = SCSI_LOW_TIMEOUT_HZ;
-
-		bus_write_1(sc->port_res, tmc_ictl, sc->sc_icinit);
-		break;
-
-	default:
-		break;
-	}
-	return 0;
-}
diff --git a/sys/dev/stg/tmc18c30.h b/sys/dev/stg/tmc18c30.h
deleted file mode 100644
index b79c11797135..000000000000
--- a/sys/dev/stg/tmc18c30.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * $FreeBSD$
- */
-
-extern devclass_t stg_devclass;
-
-int	stg_alloc_resource	(device_t);
-void	stg_release_resource	(device_t);
-int	stg_probe		(device_t);
-int	stg_attach		(device_t);
-int	stg_detach		(device_t);
-void	stg_intr		(void *);
diff --git a/sys/dev/stg/tmc18c30_isa.c b/sys/dev/stg/tmc18c30_isa.c
deleted file mode 100644
index 242db310fd89..000000000000
--- a/sys/dev/stg/tmc18c30_isa.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*	$NecBSD: tmc18c30_pisa.c,v 1.22 1998/11/26 01:59:21 honda Exp $	*/
-/*	$NetBSD$	*/
-
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [Ported for FreeBSD]
- *  Copyright (c) 2000
- *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
- *      All rights reserved.
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Kouichi Matsuda. 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/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/malloc.h>
-#include <sys/errno.h>
-
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h>
-
-#include <cam/scsi/scsi_low.h>
-
-#include <dev/stg/tmc18c30reg.h>
-#include <dev/stg/tmc18c30var.h>
-#include <dev/stg/tmc18c30.h>
-
-static int
-stg_isa_probe(device_t dev)
-{
-	struct stg_softc	*sc = device_get_softc(dev);
-	int			error;
-
-	sc->port_rid = 0;
-	sc->irq_rid = 0;
-	error = stg_alloc_resource(dev);
-	if (error) {
-		return(error);
-	}
-
-	if (stg_probe(dev) == 0) {
-		stg_release_resource(dev);
-		return(ENXIO);
-	}
-
-	stg_release_resource(dev);
-
-	return (BUS_PROBE_DEFAULT);
-}
-
-static int
-stg_isa_attach(device_t dev)
-{
-	struct stg_softc	*sc = device_get_softc(dev);
-	int			error;
-
-	sc->port_rid = 0;
-	sc->irq_rid = 0;
-	error = stg_alloc_resource(dev);
-	if (error) {
-		return(error);
-	}
-
-	error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CAM | INTR_ENTROPY |
-	    INTR_MPSAFE, NULL, stg_intr, sc, &sc->stg_intrhand);
-	if (error) {
-		stg_release_resource(dev);
-		return(error);
-	}
-
-	if (stg_attach(dev) == 0) {
-		stg_release_resource(dev);
-		return(ENXIO);
-	}
-
-	return(0);
-}
-
-static device_method_t stg_isa_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		stg_isa_probe),
-	DEVMETHOD(device_attach,	stg_isa_attach),
-	DEVMETHOD(device_detach,	stg_detach),
-
-	{ 0, 0 }
-};
-
-static driver_t stg_isa_driver = {
-	"stg",
-	stg_isa_methods,
-	sizeof(struct stg_softc),
-};
-
-DRIVER_MODULE(stg, isa, stg_isa_driver, stg_devclass, 0, 0);
-MODULE_DEPEND(stg, scsi_low, 1, 1, 1);
diff --git a/sys/dev/stg/tmc18c30_pccard.c b/sys/dev/stg/tmc18c30_pccard.c
deleted file mode 100644
index 4b665b9308c4..000000000000
--- a/sys/dev/stg/tmc18c30_pccard.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*	$NecBSD: tmc18c30_pisa.c,v 1.22 1998/11/26 01:59:21 honda Exp $	*/
-/*	$NetBSD$	*/
-
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [Ported for FreeBSD]
- *  Copyright (c) 2000
- *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
- *      All rights reserved.
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Kouichi Matsuda. 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/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/errno.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/module.h>
-#include <sys/systm.h>
-
-#include <machine/bus.h>
-
-#include <sys/bus.h>
-
-#include <dev/pccard/pccardvar.h>
-
-#include <cam/scsi/scsi_low.h>
-
-#include <dev/stg/tmc18c30reg.h>
-#include <dev/stg/tmc18c30var.h>
-#include <dev/stg/tmc18c30.h>
-
-#include "pccarddevs.h"
-
-static const struct pccard_product stg_products[] = {
-	PCMCIA_CARD(FUTUREDOMAIN, SCSI2GO),
-	PCMCIA_CARD(IBM, SCSICARD),
-	PCMCIA_CARD(RATOC, REX5536),
-	PCMCIA_CARD(RATOC, REX5536AM),
-	PCMCIA_CARD(RATOC, REX5536M),
-	{ NULL }
-};
-
-/*
- * Additional code for FreeBSD new-bus PC Card frontend
- */
-static int
-stg_pccard_probe(device_t dev)
-{
-  	const struct pccard_product *pp;
-
-	if ((pp = pccard_product_lookup(dev, stg_products,
-	    sizeof(stg_products[0]), NULL)) != NULL) {
-		if (pp->pp_name != NULL)
-			device_set_desc(dev, pp->pp_name);
-		return (BUS_PROBE_DEFAULT);
-	}
-	return(EIO);
-}
-
-static int
-stg_pccard_attach(device_t dev)
-{
-	struct stg_softc	*sc = device_get_softc(dev);
-	int			error;
-
-	sc->port_rid = 0;
-	sc->irq_rid = 0;
-	error = stg_alloc_resource(dev);
-	if (error) {
-		return(error);
-	}
-
-	if (stg_probe(dev) == 0) {
-		stg_release_resource(dev);
-		return(ENXIO);
-	}
-	error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CAM | INTR_ENTROPY |
-	    INTR_MPSAFE, NULL, stg_intr, sc, &sc->stg_intrhand);
-	if (error) {
-		stg_release_resource(dev);
-		return(error);
-	}
-
-	if (stg_attach(dev) == 0) {
-		stg_release_resource(dev);
-		return(ENXIO);
-	}
-
-	return(0);
-}
-
-static device_method_t stg_pccard_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		stg_pccard_probe),
-	DEVMETHOD(device_attach,	stg_pccard_attach),
-	DEVMETHOD(device_detach,	stg_detach),
-	{ 0, 0 }
-};
-
-static driver_t stg_pccard_driver = {
-	"stg",
-	stg_pccard_methods,
-	sizeof(struct stg_softc),
-};
-
-DRIVER_MODULE(stg, pccard, stg_pccard_driver, stg_devclass, 0, 0);
-MODULE_DEPEND(stg, scsi_low, 1, 1, 1);
-PCCARD_PNP_INFO(stg_products);
diff --git a/sys/dev/stg/tmc18c30_pci.c b/sys/dev/stg/tmc18c30_pci.c
deleted file mode 100644
index 5d82a45b5c33..000000000000
--- a/sys/dev/stg/tmc18c30_pci.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- *	Copyright (c) 2003 Bob Bishop
- *      All rights reserved.
- * [Ported for FreeBSD]
- *  Copyright (c) 2000
- *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
- *      All rights reserved.
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998
- *      NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *      Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *      Kouichi Matsuda. 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/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/malloc.h>
-#include <sys/errno.h>
-
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h>
-
-#include <dev/pci/pcireg.h>
-#include <dev/pci/pcivar.h>
-
-#include <cam/scsi/scsi_low.h>
-
-#include <dev/stg/tmc18c30reg.h>
-#include <dev/stg/tmc18c30var.h>
-#include <dev/stg/tmc18c30.h>
-
-static struct _pcsid
-{
-	u_int32_t	type;
-	const char	*desc;
-} pci_ids[] = {
-	{ 0x00001036, 	"Adaptec AHA-2920/A,Future Domain TMC-18XX/3260"	},
-	{ 0x00000000, 	NULL							}
-};
-
-static int
-stg_pci_probe(device_t dev)
-{
-	u_int32_t type = pci_get_devid(dev);
-	struct _pcsid *stg = pci_ids;
-
-	while (stg->type && stg->type != type)
-		++stg;
-	if (stg->desc) {
-		device_set_desc(dev, stg->desc);
-		return (BUS_PROBE_DEFAULT);
-	}
-	return (ENXIO);
-}
-
-static int
-stg_pci_attach(device_t dev)
-{
-	struct stg_softc	*sc = device_get_softc(dev);
-	int			error;
-
-	sc->port_rid = PCIR_BAR(0);
-	sc->irq_rid = 0;
-	error = stg_alloc_resource(dev);
-	if (error) {
-		return(error);
-	}
-
-	/* XXXX remove INTR_ENTROPY below for MFC */
-	error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CAM | INTR_ENTROPY |
-	    INTR_MPSAFE, NULL, stg_intr, sc, &sc->stg_intrhand);
-	if (error) {
-		stg_release_resource(dev);
-		return(error);
-	}
-
-	if (stg_attach(dev) == 0) {
-		stg_release_resource(dev);
-		return(ENXIO);
-	}
-
-	return(0);
-}
-
-static device_method_t stg_pci_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		stg_pci_probe),
-	DEVMETHOD(device_attach,	stg_pci_attach),
-	DEVMETHOD(device_detach,	stg_detach),
-
-	{ 0, 0 }
-};
-
-static driver_t stg_pci_driver = {
-	"stg",
-	stg_pci_methods,
-	sizeof(struct stg_softc),
-};
-
-DRIVER_MODULE(stg, pci, stg_pci_driver, stg_devclass, 0, 0);
-MODULE_DEPEND(stg, scsi_low, 1, 1, 1);
-MODULE_DEPEND(stg, pci, 1, 1, 1);
diff --git a/sys/dev/stg/tmc18c30_subr.c b/sys/dev/stg/tmc18c30_subr.c
deleted file mode 100644
index 7444f4d6fc9d..000000000000
--- a/sys/dev/stg/tmc18c30_subr.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [Ported for FreeBSD]
- *  Copyright (c) 2000
- *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
- *      All rights reserved.
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Kouichi Matsuda. 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/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/socket.h>
-
-#include <sys/module.h>
-#include <sys/bus.h>
-
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h> 
-
-#include <cam/scsi/scsi_low.h>
-
-#include <dev/stg/tmc18c30reg.h>
-#include <dev/stg/tmc18c30var.h>
-#include <dev/stg/tmc18c30.h>
-
-#define	STG_HOSTID	7
-
-devclass_t stg_devclass;
-
-int
-stg_alloc_resource(device_t dev)
-{
-	struct stg_softc *	sc = device_get_softc(dev);
-	rman_res_t		maddr, msize;
-	int			error;
-
-	mtx_init(&sc->sc_sclow.sl_lock, "stg", NULL, MTX_DEF);
-	sc->port_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 
-					      &sc->port_rid, RF_ACTIVE);
-	if (sc->port_res == NULL) {
-		stg_release_resource(dev);
-		return(ENOMEM);
-	}
-
-	sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
-					     RF_ACTIVE);
-	if (sc->irq_res == NULL) {
-		stg_release_resource(dev);
-		return(ENOMEM);
-	}
-	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_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
-					     RF_ACTIVE);
-	if (sc->mem_res == NULL) {
-		stg_release_resource(dev);
-		return(ENOMEM);
-	}
-
-	return(0);
-}
-
-void
-stg_release_resource(device_t dev)
-{
-	struct stg_softc	*sc = device_get_softc(dev);
-
-	if (sc->stg_intrhand)
-		bus_teardown_intr(dev, sc->irq_res, sc->stg_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);
-	mtx_destroy(&sc->sc_sclow.sl_lock);
-}
-
-int
-stg_probe(device_t dev)
-{
-	int rv;
-	struct stg_softc *sc = device_get_softc(dev);
-
-	rv = stgprobesubr(sc->port_res,
-			  device_get_flags(dev));
-
-	return rv;
-}
-
-int
-stg_attach(device_t dev)
-{
-	struct stg_softc *sc;
-	struct scsi_low_softc *slp;
-	u_int32_t flags = device_get_flags(dev);
-
-	sc = device_get_softc(dev);
-
-	slp = &sc->sc_sclow;
-	slp->sl_dev = dev;
-
-	slp->sl_hostid = STG_HOSTID;
-	slp->sl_cfgflags = flags;
-
-	stgattachsubr(sc);
-
-	return(STGIOSZ);
-}
-
-int
-stg_detach(device_t dev)
-{
-	struct stg_softc *sc = device_get_softc(dev);
-
-	scsi_low_deactivate(&sc->sc_sclow);
-	scsi_low_detach(&sc->sc_sclow);
-	stg_release_resource(dev);
-	return (0);
-}
-
-void
-stg_intr(void *arg)
-{
-	struct stg_softc *sc;
-
-	sc = arg;
-	SCSI_LOW_LOCK(&sc->sc_sclow);
-	stgintr(sc);
-	SCSI_LOW_UNLOCK(&sc->sc_sclow);
-}
diff --git a/sys/dev/stg/tmc18c30reg.h b/sys/dev/stg/tmc18c30reg.h
deleted file mode 100644
index 599dbf5a2c88..000000000000
--- a/sys/dev/stg/tmc18c30reg.h
+++ /dev/null
@@ -1,149 +0,0 @@
-/*	$FreeBSD$	*/
-/*	$NecBSD: tmc18c30reg.h,v 1.4.24.1 2001/06/08 06:27:50 honda Exp $	*/
-/*	$NetBSD$	*/
-
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Kouichi Matsuda. 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	_TMC18C30REG_H_
-#define	_TMC18C30REG_H_
-
-#define	tmc_wdata	0x00
-#define	tmc_rdata	0x00
-
-#define	tmc_bctl	0x01
-#define		BCTL_BUSFREE	0x00
-#define		BCTL_RST	0x01
-#define		BCTL_SEL	0x02
-#define		BCTL_BSY	0x04
-#define		BCTL_ATN	0x08
-#define		BCTL_IO		0x10
-#define		BCTL_CD		0x20
-#define		BCTL_MSG	0x40
-#define		BCTL_BUSEN	0x80
-#define	tmc_bstat	0x01
-#define		BSTAT_BSY	0x01
-#define		BSTAT_MSG	0x02
-#define		BSTAT_IO	0x04
-#define		BSTAT_CMD	0x08
-#define		BSTAT_REQ	0x10
-#define		BSTAT_SEL	0x20
-#define		BSTAT_ACK	0x40
-
-#define	tmc_ictl	0x02
-#define		ICTL_FIFO	0x10
-#define		ICTL_ARBIT	0x20
-#define		ICTL_SEL	0x40
-#define		ICTL_CD		0x80
-#define		ICTL_ALLINT	(ICTL_ARBIT | ICTL_CD | ICTL_SEL | ICTL_FIFO)
-#define	tmc_astat	0x02
-#define		ASTAT_INT	0x01
-#define		ASTAT_ARBIT	0x02
-#define		ASTAT_PARERR	0x04
-#define		ASTAT_SCSIRST	0x08
-#define		ASTAT_STATMASK	0x0f
-#define		ASTAT_FIFODIR	0x10
-#define		ASTAT_FIFOEN	0x20
-#define		ASTAT_PARENB	0x40
-#define		ASTAT_BUSEN	0x80
-
-#define	tmc_ssctl	0x03
-#define		SSCTL_FSYNCHEN	0x40
-#define		SSCTL_SYNCHEN	0x80
-#define	tmc_fstat	0x03
-
-#define	tmc_fctl	0x04
-#define		FCTL_CLRFIFO	0x01
-#define		FCTL_ARBIT	0x04
-#define		FCTL_PARENB	0x08
-#define		FCTL_INTEN	0x10
-#define		FCTL_CLRINT	0x20
-#define		FCTL_FIFOW	0x40
-#define		FCTL_FIFOEN	0x80
-#define	tmc_icnd	0x04
-
-#define	tmc_mctl	0x05
-#define	tmc_idlsb	0x05
-
-#define	tmc_idmsb	0x06
-
-#define	tmc_wlb		0x07
-#define	tmc_rlb		0x07
-
-#define	tmc_scsiid	0x08
-#define	tmc_sdna	0x08
-
-#define	tmc_istat	0x09
-#define		ISTAT_INTEN	0x08
-#define		ISTAT_FIFO	0x10
-#define		ISTAT_ARBIT	0x20
-#define		ISTAT_SEL	0x40
-#define		ISTAT_CD	0x80
-
-#define	tmc_cfg1	0x0a
-
-#define	tmc_ioctl	0x0b
-#define		IOCTL_IO32	0x80
-#define	tmc_cfg2	0x0b
-
-#define	tmc_wfifo	0x0c
-#define	tmc_rfifo	0x0c
-
-#define	tmc_fdcnt	0x0e
-
-/* Information transfer phases */
-#define	BUSFREE_PHASE		0x00
-#define	DATA_OUT_PHASE		(BSTAT_BSY)
-#define	DATA_IN_PHASE		(BSTAT_BSY|BSTAT_IO)
-#define	COMMAND_PHASE		(BSTAT_CMD|BSTAT_BSY)
-#define	STATUS_PHASE		(BSTAT_CMD|BSTAT_BSY|BSTAT_IO)
-#define	MESSAGE_OUT_PHASE	(BSTAT_CMD|BSTAT_MSG|BSTAT_BSY)
-#define	MESSAGE_IN_PHASE	(BSTAT_CMD|BSTAT_MSG|BSTAT_BSY|BSTAT_IO)
-#define	PHASE_RESELECTED	(BSTAT_SEL|BSTAT_IO)
-
-#define	BSTAT_PHMASK		(BSTAT_MSG | BSTAT_IO | BSTAT_CMD)
-#define	PHASE_MASK		(BSTAT_SEL | BSTAT_BSY | BSTAT_PHMASK)
-#define	RESEL_PHASE_MASK	(BSTAT_SEL | BSTAT_PHMASK)
-
-#define	STG_IS_PHASE_DATA(st) \
-	((((st) & PHASE_MASK) & ~BSTAT_IO) == BSTAT_BSY)
-
-/* chip type */
-#define	TMCCHIP_UNK		0x00
-#define	TMCCHIP_1800		0x01
-#define	TMCCHIP_18C50		0x02
-#define	TMCCHIP_18C30		0x03
-
-#define	STGIOSZ	0x10
-
-#endif	/* !_TMC18C30REG_H_ */
diff --git a/sys/dev/stg/tmc18c30var.h b/sys/dev/stg/tmc18c30var.h
deleted file mode 100644
index c7d1b163cca1..000000000000
--- a/sys/dev/stg/tmc18c30var.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*	$FreeBSD$	*/
-/*	$NecBSD: tmc18c30var.h,v 1.12.18.2 2001/06/13 05:51:23 honda Exp $	*/
-/*	$NetBSD$	*/
-
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * [NetBSD for NEC PC-98 series]
- *  Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001
- *	NetBSD/pc98 porting staff. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001
- *	Naofumi HONDA. All rights reserved.
- *  Copyright (c) 1996, 1997, 1998
- *	Kouichi Matsuda. 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	_TMC18C30VAR_H_
-#define	_TMC18C30VAR_H_
-
-/*****************************************************************
- * Host adapter structure
- *****************************************************************/
-struct stg_softc {
-	struct scsi_low_softc sc_sclow;	/* generic data */
-
-	int port_rid;
-	int irq_rid;
-	int mem_rid;
-	struct resource *port_res;
-	struct resource *irq_res;
-	struct resource *mem_res;
-
-	void *stg_intrhand;
-
-	int sc_tmaxcnt;
-	u_int sc_chip;			/* chip type */
-	u_int sc_fsz;			/* fifo size */
-	u_int sc_idbit;			/* host id bit */
-	u_int sc_wthold;		/* write thread */
-	u_int sc_rthold;		/* read thread */
-	u_int sc_maxwsize;		/* max write size */
-	int sc_dataout_timeout;		/* data out timeout counter */
-	int sc_ubf_timeout;		/* unexpected bus free timeout */
-
-	u_int8_t sc_fcWinit;		/* write flags */
-	u_int8_t sc_fcRinit;		/* read flags */
-
-	u_int8_t sc_icinit;		/* interrupt masks */
-	u_int8_t sc_busc;		/* default bus control register */
-	u_int8_t sc_imsg;		/* identify msg required */
-	u_int8_t sc_busimg;		/* bus control register image */
-};
-
-/*****************************************************************
- * Lun information 
- *****************************************************************/
-struct stg_targ_info {
-	struct targ_info sti_ti;		/* generic data */
-
-	u_int8_t sti_reg_synch;		/* synch register per lun */
-};
-
-/*****************************************************************
- * Proto
- *****************************************************************/
-int stgprobesubr(struct resource *, u_int);
-void stgattachsubr(struct stg_softc *);
-int stgintr(void *);
-
-#endif	/* !_TMC18C30VAR_H_ */
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index bc791b5a84f2..fb70ea0d22c3 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -657,16 +657,6 @@ options 	TWA_DEBUG		# 0-10; 10 prints the most messages.
 device		twa			# 3ware 9000 series PATA/SATA RAID
 
 #
-# SCSI host adapters:
-#
-# stg: TMC 18C30, 18C50 based SCSI host adapters.
-
-device		stg
-hint.stg.0.at="isa"
-hint.stg.0.port="0x140"
-hint.stg.0.port="11"
-
-#
 # Adaptec FSA RAID controllers, including integrated DELL controllers,
 # the Dell PERC 2/QC and the HP NetRAID-4M
 device		aac
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index 5bc3086c4472..3e8cedfed583 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -357,7 +357,6 @@ SUBDIR=	\
 	${_splash} \
 	${_sppp} \
 	ste \
-	${_stg} \
 	stge \
 	${_sym} \
 	${_syscons} \
@@ -758,7 +757,6 @@ _ncr=		ncr
 _pcfclock=	pcfclock
 _pst=		pst
 _sbni=		sbni
-_stg=		stg
 .if ${MK_SOURCELESS_UCODE} != "no"
 _ctau=		ctau
 .endif
diff --git a/sys/modules/stg/Makefile b/sys/modules/stg/Makefile
deleted file mode 100644
index 610c605c1bd5..000000000000
--- a/sys/modules/stg/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-# $FreeBSD$
-
-.PATH: ${SRCTOP}/sys/dev/stg
-
-KMOD=	stg
-SRCS=	tmc18c30.c tmc18c30_subr.c \
-	tmc18c30_isa.c		isa_if.h \
-	tmc18c30_pccard.c	card_if.h pccarddevs.h \
-	tmc18c30_pci.c		pci_if.h
-SRCS+=	device_if.h bus_if.h
-SRCS+=	opt_cam.h opt_scsi.h opt_ddb.h
-
-.include <bsd.kmod.mk>