Add support for Initio INI-91xx SCSI Cards

5 files changed, 3621 insertions, 2 deletions

diff --git a/sys/conf/files b/sys/conf/files
index 5ed4f83c67e..9ed3688eaf7 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1,4 +1,4 @@
-#	$OpenBSD: files,v 1.182 2000/12/17 21:34:57 mickey Exp $
+#	$OpenBSD: files,v 1.183 2001/01/23 04:19:42 krw Exp $
 #	$NetBSD: files,v 1.87 1996/05/19 17:17:50 jonathan Exp $
 
 #	@(#)files.newconf	7.5 (Berkeley) 5/10/93
@@ -200,6 +200,10 @@ file	dev/ic/lpt.c		lpt & (lpt_isa | lpt_pica | lpt_algor | lpt_gsc | lpt_puc) ne
 device	sti: wsemuldisplaydev
 file	dev/ic/sti.c		sti & (sti_pci | sti_sgc)	needs-flag
 
+# Initio ULTRA WIDE/ULTRA2 WIDE SCSI Controllers
+device	iha: scsi
+file	dev/ic/iha.c		iha
+ 
 # Attributes which machine-independent bus support can be attached to.
 # These should be defined here, because some of these busses can have
 # devices which provide these attributes, and we'd like to avoid hairy
diff --git a/sys/dev/ic/iha.c b/sys/dev/ic/iha.c
new file mode 100644
index 00000000000..b4ac2a02379
--- /dev/null
+++ b/sys/dev/ic/iha.c
@@ -0,0 +1,2978 @@
+/*	$OpenBSD: iha.c,v 1.1 2001/01/23 04:19:41 krw Exp $ */
+/*
+ * Initio INI-9xxxU/UW SCSI Device Driver
+ *
+ * Copyright (c) 2000 Ken Westerback
+ * 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,
+ *    without modification, immediately at the beginning of the file.
+ * 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 OR HIS RELATIVES 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 MIND, 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.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Ported from i91u.c, provided by Initio Corporation, which credits:
+ *
+ * Device driver for the INI-9XXXU/UW or INIC-940/950  PCI SCSI Controller.
+ *
+ * FreeBSD
+ *
+ *  Written for 386bsd and FreeBSD by
+ *	Winston Hung		<winstonh@initio.com>
+ *
+ * Copyright (c) 1997-99 Initio Corp.  All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/buf.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+
+#include <dev/ic/iha.h>
+
+struct cfdriver iha_cd = {
+	NULL, "iha", DV_DULL
+};
+
+struct scsi_adapter iha_switch = {
+	iha_scsi_cmd,	/*  int (*scsi_cmd) __P((struct scsi_xfer *)); */
+	iha_minphys,	/* void (*scsi_minphys) __P((struct buf *));   */
+	NULL,		/*  int (*open_target_lu) __P((void));         */
+	NULL		/*  int (*close_target_lu) __P((void));        */
+};
+
+struct scsi_device iha_dev = {
+	NULL,		/* Use default error handler    */
+	NULL,		/* have a queue, served by this */
+	NULL,		/* have no async handler	*/
+	NULL,		/* Use default 'done' routine   */
+};
+
+/*
+ * SCSI Rate Table, indexed by FLAG_SCSI_RATE field of
+ * TCS_Flags.
+ */
+static u_int8_t tul_rate_tbl[8] = {
+	/* fast 20		  */
+	/* nanosecond divide by 4 */
+	12,	/* 50ns,  20M	  */
+	18,	/* 75ns,  13.3M	  */
+	25,	/* 100ns, 10M	  */
+	31,	/* 125ns, 8M	  */
+	37,	/* 150ns, 6.6M	  */
+	43,	/* 175ns, 5.7M	  */
+	50,	/* 200ns, 5M	  */
+	62	/* 250ns, 4M	  */
+};
+
+static struct nvram tul_nvram;
+
+static u_int8_t tul_dftNvRam[64] = {
+	/* -- Header ------------------------------------ */
+	0x25, 0xc9,		/* NVM_Signature          */
+	0x40,			/* NVM_Size	          */
+	0x01,			/* NVM_Revision	          */
+
+	/* -- Host Adapter Structure -------------------- */
+	0x95,			/* NVM_ModelByte0	  */
+	0x00,			/* NVM_ModelByte1	  */
+	0x00,			/* NVM_ModelInfo	  */
+	0x01,			/* NVM_NumOfCh	          */
+	BIOSCFG_DEFAULT,	/* NVM_BIOSConfig1	  */
+	0,			/* NVM_BIOSConfig2	  */
+	0,			/* NVM_HAConfig1	  */
+	0,			/* NVM_HAConfig2	  */
+
+	/* -- NVM_Scsi[0] ------------------------------- */
+	7,			/* NVM_SCSI_Id            */
+	CFG_DEFAULT,		/* NVM_SCSI_Cfg           */
+	0,			/* NVM_SCSI_CfgByte2      */
+	8,			/* NVM_SCSI_Targets       */
+				/* NVM_SCSI_TargetFlags   */
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+
+	/* -- NVM_Scsi[1] ------------------------------- */
+	7,			/* NVM_SCSI_Id            */
+	CFG_DEFAULT,		/* NVM_SCSI_Cfg           */
+	0,			/* NVM_SCSI_CfgByte2      */
+	8,			/* NVM_SCSI_Targets       */
+				/* NVM_SCSI_TargetFlags   */
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+	FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT, FLAG_DEFAULT,
+				
+	0,0,0,0,0,0,0,0,0,0,	/* NVM_Reserved[10]       */
+	0,0			/* NVM_CheckSum           */
+};
+
+static u_int8_t tul_data_over_run __P((struct iha_scsi_req_q *));
+
+static void tul_push_sense_request __P((struct iha_softc *,
+					   struct iha_scsi_req_q *));
+static void tul_timeout __P((void *));
+static int  tul_alloc_scbs __P((struct iha_softc *));
+
+static void	 tul_read_eeprom    __P((bus_space_tag_t, bus_space_handle_t));
+static void	 tul_se2_update_all __P((bus_space_tag_t, bus_space_handle_t));
+static int	 tul_se2_rd_all	    __P((bus_space_tag_t, bus_space_handle_t));
+static void	 tul_se2_wr	    __P((bus_space_tag_t, bus_space_handle_t,
+					    u_int8_t, u_int16_t));
+static void	 tul_se2_instr	    __P((bus_space_tag_t, bus_space_handle_t,
+					    u_int8_t));
+static u_int16_t tul_se2_rd	    __P((bus_space_tag_t, bus_space_handle_t,
+					    u_int8_t));
+
+static void tul_reset_scsi_bus __P((struct iha_softc *));
+static void tul_reset_chip     __P((struct iha_softc *,
+				       bus_space_tag_t, bus_space_handle_t));
+static void tul_reset_dma      __P((bus_space_tag_t, bus_space_handle_t));
+
+static void tul_reset_tcs  __P((struct tcs *, u_int8_t));
+
+static void tul_print_info __P((struct iha_softc *, int));
+
+static void tul_done_scb __P((struct iha_softc *, struct iha_scsi_req_q *));
+static void tul_exec_scb __P((struct iha_softc *, struct iha_scsi_req_q *));
+
+static void tul_main __P((struct iha_softc *,
+			     bus_space_tag_t, bus_space_handle_t));
+static void tul_scsi __P((struct iha_softc *,
+			     bus_space_tag_t, bus_space_handle_t));
+
+static int  tul_wait __P((struct iha_softc *,
+			     bus_space_tag_t, bus_space_handle_t, u_int8_t));
+
+static void tul_mark_busy_scb	__P((struct iha_scsi_req_q *));
+
+static void tul_append_free_scb __P((struct iha_softc *,
+					struct iha_scsi_req_q *));
+static struct iha_scsi_req_q *tul_pop_free_scb __P((struct iha_softc *));
+
+static void tul_append_done_scb __P((struct iha_softc *,
+					struct iha_scsi_req_q *, u_int8_t));
+static struct iha_scsi_req_q *tul_pop_done_scb	  __P((struct iha_softc *));
+
+static void tul_append_pend_scb __P((struct iha_softc *,
+					struct iha_scsi_req_q *));
+static void tul_push_pend_scb	__P((struct iha_softc *,
+					struct iha_scsi_req_q *));
+static void tul_del_pend_scb	__P((struct iha_softc *,
+					struct iha_scsi_req_q *));
+static struct iha_scsi_req_q *tul_find_pend_scb	  __P((struct iha_softc *));
+
+static void tul_sync_done __P((struct iha_softc *,
+				  bus_space_tag_t, bus_space_handle_t));
+static void tul_wdtr_done __P((struct iha_softc *,
+				  bus_space_tag_t, bus_space_handle_t));
+static void tul_bad_seq	  __P((struct iha_softc *));
+
+static int  tul_next_state __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_1	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_2	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_3	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_4	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_5	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_6	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+static int  tul_state_8	   __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+
+static void tul_set_ssig __P((bus_space_tag_t,
+				 bus_space_handle_t, u_int8_t, u_int8_t));
+
+static int  tul_xpad_in	 __P((struct iha_softc *,
+				 bus_space_tag_t, bus_space_handle_t));
+static int  tul_xpad_out __P((struct iha_softc *,
+				 bus_space_tag_t, bus_space_handle_t));
+
+static int  tul_xfer_data __P((struct iha_scsi_req_q *,
+				  bus_space_tag_t, bus_space_handle_t,
+				  int direction));
+
+static int  tul_status_msg __P((struct iha_softc *,
+				   bus_space_tag_t, bus_space_handle_t));
+
+static int  tul_msgin        __P((struct iha_softc *,
+				     bus_space_tag_t, bus_space_handle_t));
+static int  tul_msgin_sync   __P((struct iha_softc *));
+static int  tul_msgin_extend __P((struct iha_softc *,
+				     bus_space_tag_t, bus_space_handle_t));
+static int  tul_msgin_ignore_wid_resid __P((struct iha_softc *,
+					       bus_space_tag_t,
+					       bus_space_handle_t));
+
+static int  tul_msgout	      __P((struct iha_softc *,
+				      bus_space_tag_t, bus_space_handle_t,
+				      u_int8_t));
+static void tul_msgout_abort  __P((struct iha_softc *,
+				      bus_space_tag_t, bus_space_handle_t,
+				      u_int8_t));
+static int  tul_msgout_reject __P((struct iha_softc *,
+				      bus_space_tag_t, bus_space_handle_t));
+static int  tul_msgout_sync   __P((struct iha_softc *,
+				      bus_space_tag_t, bus_space_handle_t));
+static int  tul_msgout_wide   __P((struct iha_softc *,
+				      bus_space_tag_t, bus_space_handle_t));
+
+static void tul_select __P((struct iha_softc *,
+			       bus_space_tag_t, bus_space_handle_t,
+			       struct iha_scsi_req_q *, u_int8_t));
+
+static void tul_busfree	 __P((struct iha_softc *,
+				 bus_space_tag_t, bus_space_handle_t));
+static int  tul_resel	 __P((struct iha_softc *,
+				 bus_space_tag_t, bus_space_handle_t));
+
+static void tul_abort_xs __P((struct iha_softc *,
+				 struct scsi_xfer *, u_int8_t));
+
+/*
+ * iha_intr - the interrupt service routine for the iha driver
+ */
+int
+iha_intr(arg)
+	void *arg;
+{
+	bus_space_handle_t ioh;
+	struct iha_softc *sc;
+	bus_space_tag_t iot;
+	int s;
+
+	sc  = (struct iha_softc *)arg;
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+
+	if ((bus_space_read_1(iot, ioh, TUL_STAT0) & INTPD) == 0)
+		return (0);
+
+	s = splbio(); /* XXX - Or are interrupts off when ISR's are called? */
+
+	if (sc->HCS_Semaph != SEMAPH_IN_MAIN) {
+		/* XXX - need these inside a splbio()/splx()? */
+		bus_space_write_1(iot, ioh, TUL_IMSK, MASK_ALL);
+		sc->HCS_Semaph = SEMAPH_IN_MAIN;
+
+		tul_main(sc, iot, ioh);
+
+		sc->HCS_Semaph = ~SEMAPH_IN_MAIN;
+		bus_space_write_1(iot, ioh, TUL_IMSK, (MASK_ALL & ~MSCMP));
+	}
+
+	splx(s);
+
+	return (1);
+}
+
+/*
+ * iha_scsi_cmd - start execution of a SCSI command. This is called
+ *		  from the generic SCSI driver via the field
+ *		  sc_adapter.scsi_cmd of iha_softc.
+ */
+int
+iha_scsi_cmd(xs)
+	struct scsi_xfer *xs;
+{
+	struct iha_scsi_req_q *pScb;
+	struct iha_sg_element *sg;
+	struct scsi_link *sc_link = xs->sc_link;
+	struct iha_softc *sc = sc_link->adapter_softc;
+	bus_dmamap_t dm;
+	int error, nseg, i;
+
+	if ((xs->cmdlen > 12) || (sc_link->target >= IHA_MAX_TARGETS)) {
+		xs->error = XS_DRIVER_STUFFUP;
+		return (COMPLETE);
+	}
+
+	pScb = tul_pop_free_scb(sc);
+	if (pScb == NULL) {
+		/* XXX - different xs->error/return if
+		 * SCSI_POLL/_NOSLEEP? */
+		xs->error = XS_BUSY;
+		return (TRY_AGAIN_LATER);
+	}
+
+	pScb->SCB_Target = sc_link->target;
+	pScb->SCB_Lun	 = sc_link->lun;
+	pScb->SCB_Tcs	 = &sc->HCS_Tcs[pScb->SCB_Target];
+	pScb->SCB_Flags	 = xs->flags;
+	pScb->SCB_Ident  = IDENT_IDENTITY | (pScb->SCB_Lun & IDENT_LUN);
+
+	if ((xs->cmd->opcode != REQUEST_SENSE)
+	    && ((pScb->SCB_Flags & SCSI_POLL) == 0))
+		pScb->SCB_Ident |= IDENT_DISC_PRIV;
+
+	pScb->SCB_Xs	 = xs;
+	pScb->SCB_CDBLen = xs->cmdlen;
+	bcopy(xs->cmd, &pScb->SCB_CDB, xs->cmdlen);
+
+	pScb->SCB_BufLen = xs->datalen;
+
+	if (pScb->SCB_BufLen > 0) {
+#ifdef TFS
+		if (xs->flags & SCSI_DATA_UIO)
+			error = bus_dmamap_load_uio(sc->sc_dmat,
+			    pScb->SCB_Dmamap, (struct uio *)xs->data,
+			    (xs->flags & SCSI_NOSLEEP) ?
+			    BUS_DMA_NOWAIT : BUS_DMA_WAITOK);
+		else
+#endif /* TFS */
+			error = bus_dmamap_load(sc->sc_dmat, pScb->SCB_Dmamap,
+			    xs->data, pScb->SCB_BufLen, NULL,
+			    (xs->flags & SCSI_NOSLEEP) ?
+			    BUS_DMA_NOWAIT : BUS_DMA_WAITOK);
+
+		if (error) {
+			if (error == EFBIG)
+				printf("%s: buffer needs >%d dma segments\n",
+				    sc->sc_dev.dv_xname, IHA_MAX_SG_ENTRIES);
+			else
+				printf("%s: error %d loading dma map\n",
+				    sc->sc_dev.dv_xname, error);
+
+			/* XXX - need to scsi_done() xs? i.e. put in doneq? */
+			tul_append_free_scb(sc, pScb); 
+
+			xs->error = XS_DRIVER_STUFFUP;
+			return (COMPLETE);
+		}
+
+		dm   = pScb->SCB_Dmamap;
+		nseg = dm->dm_nsegs;
+
+		if (nseg > 1) {
+			sg = pScb->SCB_SGList;
+
+			for (i=0; i < nseg; i++) {
+				sg[i].SG_Len = dm->dm_segs[i].ds_len;
+				sg[i].SG_Ptr = dm->dm_segs[i].ds_addr;
+			}
+
+			pScb->SCB_Flags	  |= FLAG_SG;
+			pScb->SCB_SGLen	   = nseg;
+
+			pScb->SCB_BufPAddr = pScb->SCB_SGPAddr;
+		} else
+			pScb->SCB_BufPAddr = dm->dm_segs[0].ds_addr;
+
+		bus_dmamap_sync(sc->sc_dmat, pScb->SCB_Dmamap,
+		    (pScb->SCB_Flags & SCSI_DATA_IN) ?
+		    BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
+	}
+
+	pScb->SCB_SGMax	  = pScb->SCB_SGLen;
+	pScb->SCB_Timeout = xs->timeout;
+
+	/*
+	 * Always initialize the stimeout structure as it may 
+	 * contain garbage that confuses timeout_del() later on.
+	 * But, timeout_add() ONLY if we are not polling.
+	 */
+	timeout_set(&xs->stimeout, tul_timeout, pScb);
+	if ((xs->flags & SCSI_POLL) == 0)
+		timeout_add(&xs->stimeout, (xs->timeout/1000) * hz);
+
+	tul_exec_scb(sc, pScb);
+
+	if ((xs->flags & ITSDONE) == 0)
+		return (SUCCESSFULLY_QUEUED);
+	else
+		return (COMPLETE);
+}
+
+/*
+ * iha_init_tulip - initialize the inic-950 card and the rest of the
+ *		    IHA_SOFTC structure supplied
+ */
+int
+iha_init_tulip(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb;
+	bus_space_handle_t ioh;
+	struct nvram_scsi *pScsi;
+	bus_space_tag_t iot;
+	int i, error;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+
+	tul_read_eeprom(iot, ioh);
+
+	pScsi = &tul_nvram.NVM_Scsi[0];
+
+	/*
+	 * fill in the prototype scsi_link.
+	 */
+	sc->sc_link.adapter_softc    = sc;
+	sc->sc_link.adapter	     = &iha_switch;
+	sc->sc_link.device	     = &iha_dev;
+	sc->sc_link.openings	     = 4; /* # xs's allowed per device */
+	sc->sc_link.adapter_target   = pScsi->NVM_SCSI_Id;
+	sc->sc_link.adapter_buswidth = pScsi->NVM_SCSI_Targets;
+
+	/*
+	 * fill in the rest of the IHA_SOFTC fields
+	 */
+	sc->HCS_Semaph	  = ~SEMAPH_IN_MAIN;
+	sc->HCS_JSStatus0 = 0;
+	sc->HCS_ActScb	  = NULL;
+
+	TAILQ_INIT(&sc->HCS_FreeScb);
+	TAILQ_INIT(&sc->HCS_PendScb);
+	TAILQ_INIT(&sc->HCS_DoneScb);
+
+	error = tul_alloc_scbs(sc);
+	if (error != 0)
+		return (error);
+
+	for (i = 0, pScb = sc->HCS_Scb; i < IHA_MAX_SCB; i++, pScb++) {
+		pScb->SCB_TagId = i;
+		pScb->SCB_SGPAddr = sc->sc_dmamap->dm_segs[0].ds_addr
+		    + i*sizeof(struct iha_scsi_req_q)
+		    + OFFSETOF(struct iha_scsi_req_q, SCB_SGList);
+
+		pScb->SCB_SenseLen   = sizeof(struct scsi_sense_data);
+		pScb->SCB_SensePAddr = sc->sc_dmamap->dm_segs[0].ds_addr
+		    + i*sizeof(struct iha_scsi_req_q)
+		    + OFFSETOF(struct iha_scsi_req_q, SCB_ScsiSenseData);
+
+		error = bus_dmamap_create(sc->sc_dmat,
+		    (IHA_MAX_SG_ENTRIES-1) * PAGE_SIZE, IHA_MAX_SG_ENTRIES,
+		    (IHA_MAX_SG_ENTRIES-1) * PAGE_SIZE, 0,
+		    BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &pScb->SCB_Dmamap);
+
+		if (error != 0) {
+			printf("%s: couldn't create SCB DMA map, error = %d\n",
+			    sc->sc_dev.dv_xname, error);
+			return (error);
+		}
+		TAILQ_INSERT_TAIL(&sc->HCS_FreeScb, pScb, SCB_ScbList);
+	}
+
+	/* Mask all the interrupts */
+	bus_space_write_1(iot, ioh, TUL_IMSK, MASK_ALL);
+
+	/* Stop any I/O and reset the scsi module */
+	tul_reset_dma(iot, ioh);
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSMOD);
+
+	/* Program HBA's SCSI ID */
+	bus_space_write_1(iot, ioh, TUL_SID, sc->sc_link.adapter_target << 4);
+
+	/*
+	 * Configure the channel as requested by the NVRAM settings read 
+	 * into tul_nvram by tul_read_eeprom() above.
+	 */
+
+	if ((pScsi->NVM_SCSI_Cfg & CFG_EN_PAR) != 0)
+		sc->HCS_SConf1 = (SCONFIG0DEFAULT | SPCHK);
+	else
+		sc->HCS_SConf1 = (SCONFIG0DEFAULT);
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, sc->HCS_SConf1);
+
+	/* selection time out in units of 1.6385 millisecond = 250 ms */
+	bus_space_write_1(iot, ioh, TUL_STIMO, 153);
+
+	/* Enable desired SCSI termination configuration read from eeprom */
+	bus_space_write_1(iot, ioh, TUL_DCTRL0,
+	    (pScsi->NVM_SCSI_Cfg & (CFG_ACT_TERM1 | CFG_ACT_TERM2)));
+
+	bus_space_write_1(iot, ioh, TUL_GCTRL1,
+	    ((pScsi->NVM_SCSI_Cfg & CFG_AUTO_TERM) >> 4) 
+	        | (bus_space_read_1(iot, ioh, TUL_GCTRL1) & (~ATDEN)));
+
+	for (i = 0; i < IHA_MAX_TARGETS; i++) {
+		sc->HCS_Tcs[i].TCS_Flags = pScsi->NVM_SCSI_TargetFlags[i];
+		tul_reset_tcs(&sc->HCS_Tcs[i], sc->HCS_SConf1);
+	}
+
+	tul_reset_chip(sc, iot, ioh);
+	bus_space_write_1(iot, ioh, TUL_SIEN, ALL_INTERRUPTS);
+
+	return (0);
+}
+
+/*
+ * iha_minphys - reduce bp->b_bcount to something less than
+ *		 or equal to the largest I/O possible through
+ *		 the adapter. Called from higher layers
+ *		 via sc->sc_adapter.scsi_minphys.
+ */
+void
+iha_minphys(bp)
+	struct buf *bp;
+{
+	if (bp->b_bcount > ((IHA_MAX_SG_ENTRIES - 1) * PAGE_SIZE))
+		bp->b_bcount = ((IHA_MAX_SG_ENTRIES - 1) * PAGE_SIZE);
+
+	minphys(bp);
+}
+
+/*
+ * tul_reset_dma - abort any active DMA xfer, reset tulip FIFO.
+ */
+static void
+tul_reset_dma(iot, ioh)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	if ((bus_space_read_1(iot, ioh, TUL_ISTUS1) & XPEND) != 0) {
+		/* if DMA xfer is pending, abort DMA xfer */
+		bus_space_write_1(iot, ioh, TUL_DCMD, ABTXFR);
+		/* wait Abort DMA xfer done */
+		while ((bus_space_read_1(iot, ioh, TUL_ISTUS0) & DABT) == 0)
+			;
+	}
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+}
+
+/*
+ * tul_pop_free_scb - return the first free SCB, or NULL if there are none.
+ */
+static struct iha_scsi_req_q *
+tul_pop_free_scb(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb;
+	int s;
+
+	s = splbio();
+
+	pScb = TAILQ_FIRST(&sc->HCS_FreeScb);
+
+	if (pScb != NULL) {
+		pScb->SCB_Status = STATUS_RENT;
+		TAILQ_REMOVE(&sc->HCS_FreeScb, pScb, SCB_ScbList);
+	}
+
+	splx(s);
+
+	return (pScb);
+}
+
+/*
+ * tul_append_free_scb - append the supplied SCB to the tail of the
+ *                       HCS_FreeScb queue after clearing and resetting
+ *			 everything possible.
+ */
+static void
+tul_append_free_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	int s;
+
+	s = splbio();
+
+	if (pScb->SCB_Xs != NULL)
+		timeout_del(&pScb->SCB_Xs->stimeout);
+
+	if (pScb == sc->HCS_ActScb)
+		sc->HCS_ActScb = NULL;
+
+	pScb->SCB_Status  = STATUS_QUEUED;
+	pScb->SCB_HaStat  = HOST_OK;
+	pScb->SCB_TaStat  = SCSI_OK;
+
+	pScb->SCB_NxtStat  = 0;
+	pScb->SCB_SGIdx	   = 0;
+	pScb->SCB_SGMax	   = 0;
+	pScb->SCB_Flags	   = 0;
+	pScb->SCB_Target   = 0;
+	pScb->SCB_Lun	   = 0;
+	pScb->SCB_BufLen   = 0;
+	pScb->SCB_SGLen	   = 0;
+	pScb->SCB_CDBLen   = 0;
+	pScb->SCB_Ident	   = 0;
+	pScb->SCB_TagMsg   = 0;
+	pScb->SCB_Timeout  = 0;
+	pScb->SCB_BufPAddr = 0;
+
+	pScb->SCB_Xs  = NULL;
+	pScb->SCB_Tcs = NULL;
+
+	bzero( pScb->SCB_CDB,		sizeof(pScb->SCB_CDB));
+	bzero(&pScb->SCB_ScsiSenseData, sizeof(pScb->SCB_ScsiSenseData));
+	bzero( pScb->SCB_SGList,	sizeof(pScb->SCB_SGList));
+
+	/*
+	 * SCB_TagId, SCB_SGPAddr, SCB_SenseLen, SCB_SGList
+	 * SCB_SensePtr are set at initialization
+	 * and never change
+	 */
+
+	TAILQ_INSERT_TAIL(&sc->HCS_FreeScb, pScb, SCB_ScbList);
+
+	splx(s);
+}
+
+static void
+tul_append_pend_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	/* ASSUMPTION: only called within a splbio()/splx() pair */
+
+	if (pScb == sc->HCS_ActScb)
+		sc->HCS_ActScb = NULL;
+
+	pScb->SCB_Status = STATUS_QUEUED;
+
+	TAILQ_INSERT_TAIL(&sc->HCS_PendScb, pScb, SCB_ScbList);
+}
+
+static void
+tul_push_pend_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	int s;
+
+	s = splbio();
+
+	if (pScb == sc->HCS_ActScb)
+		sc->HCS_ActScb = NULL;
+
+	pScb->SCB_Status = STATUS_QUEUED;
+
+	TAILQ_INSERT_HEAD(&sc->HCS_PendScb, pScb, SCB_ScbList);
+
+	splx(s);
+}
+
+/*
+ * tul_find_pend_scb - scan the pending queue for a SCB that can be
+ *		       processed immediately. Return NULL if none found
+ *		       and a pointer to the SCB if one is found. If there
+ *		       is an active SCB, return NULL!
+ */
+static struct iha_scsi_req_q *
+tul_find_pend_scb(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb;
+	struct tcs *pTcs;
+	int s;
+
+	s = splbio();
+
+	if (sc->HCS_ActScb != NULL)
+		pScb = NULL;
+
+	else
+		TAILQ_FOREACH(pScb, &sc->HCS_PendScb, SCB_ScbList) {
+			if ((pScb->SCB_Flags & SCSI_RESET) != 0)
+				/* ALWAYS willing to reset a device */
+				break;
+
+			pTcs = pScb->SCB_Tcs;
+
+			if ((pScb->SCB_TagMsg) != 0) {
+				/*
+				 * A Tagged I/O. OK to start If no
+				 * non-tagged I/O is active on the same
+				 * target
+				 */
+				if (pTcs->TCS_NonTagScb == NULL)
+					break;
+
+			} else	if (pScb->SCB_CDB[0] == REQUEST_SENSE) {
+				/*
+				 * OK to do a non-tagged request sense
+				 * even if a non-tagged I/O has been
+				 * started, 'cuz we don't allow any
+				 * disconnect during a request sense op
+				 */
+				break;
+
+			} else	if (pTcs->TCS_TagCnt == 0) {
+				/*
+				 * No tagged I/O active on this target,
+				 * ok to start a non-tagged one if one
+				 * is not already active
+				 */
+				if (pTcs->TCS_NonTagScb == NULL)
+					break;
+			}
+		}
+
+	splx(s);
+
+	return (pScb);
+}
+
+/*
+ * tul_del_pend_scb - remove pScb from HCS_PendScb
+ */
+static void
+tul_del_pend_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	int s;
+
+	s = splbio();
+
+	TAILQ_REMOVE(&sc->HCS_PendScb, pScb, SCB_ScbList);
+
+	splx(s);
+}
+
+static void
+tul_mark_busy_scb(pScb)
+	struct iha_scsi_req_q *pScb;
+{
+	int  s;
+
+	s = splbio();
+
+	pScb->SCB_Status = STATUS_BUSY;
+
+	if (pScb->SCB_TagMsg == 0)
+		pScb->SCB_Tcs->TCS_NonTagScb = pScb;
+	else
+		pScb->SCB_Tcs->TCS_TagCnt++;
+
+	splx(s);
+}
+
+static void
+tul_append_done_scb(sc, pScb, hastat)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+	u_int8_t hastat;
+{
+	struct tcs *pTcs;
+	int s;
+
+	s = splbio();
+
+	if (pScb->SCB_Xs != NULL)
+		timeout_del(&pScb->SCB_Xs->stimeout);
+
+	if (pScb == sc->HCS_ActScb)
+		sc->HCS_ActScb = NULL;
+
+	pTcs = pScb->SCB_Tcs;
+
+	if (pScb->SCB_TagMsg != 0) {
+		if (pTcs->TCS_TagCnt)
+			pTcs->TCS_TagCnt--;
+	} else if (pTcs->TCS_NonTagScb == pScb)
+		pTcs->TCS_NonTagScb = NULL;
+
+	pScb->SCB_Status = STATUS_QUEUED;
+	pScb->SCB_HaStat = hastat;
+
+	TAILQ_INSERT_TAIL(&sc->HCS_DoneScb, pScb, SCB_ScbList);
+
+	splx(s);
+}
+
+static struct iha_scsi_req_q *
+tul_pop_done_scb(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb;
+	int s;
+
+	s = splbio();
+
+	pScb = TAILQ_FIRST(&sc->HCS_DoneScb);
+
+	if (pScb != NULL) {
+		pScb->SCB_Status = STATUS_RENT;
+		TAILQ_REMOVE(&sc->HCS_DoneScb, pScb, SCB_ScbList);
+	}
+
+	splx(s);
+
+	return (pScb);
+}
+
+/*
+ * tul_abort_xs - find the SCB associated with the supplied xs and
+ *                stop all processing on it, moving it to the done
+ *                queue with the supplied host status value.
+ */
+static void
+tul_abort_xs(sc, xs, hastat)
+	struct iha_softc *sc;
+	struct scsi_xfer *xs;
+	u_int8_t hastat;
+{
+	struct iha_scsi_req_q *pScb;
+	int i, s;
+
+	s = splbio();
+
+	/* Check the pending queue for the SCB pointing to xs */
+
+	TAILQ_FOREACH(pScb, &sc->HCS_PendScb, SCB_ScbList)
+		if (pScb->SCB_Xs == xs) {
+			tul_del_pend_scb(sc, pScb);
+			tul_append_done_scb(sc, pScb, hastat);
+			splx(s);
+			return;
+		}
+
+	/*
+	 * If that didn't work, check all BUSY/SELECTING SCB's for one
+	 * pointing to xs
+	 */
+
+	for (i = 0, pScb = sc->HCS_Scb; i < IHA_MAX_SCB; i++, pScb++)
+		switch (pScb->SCB_Status) {
+		case STATUS_BUSY:
+		case STATUS_SELECT:
+			if (pScb->SCB_Xs == xs) {
+				tul_append_done_scb(sc, pScb, hastat);
+				splx(s);
+				return;
+			}
+			break;
+		default:
+			break;
+		}
+	
+	splx(s);
+}
+
+/*
+ * tul_bad_seq - a SCSI bus phase was encountered out of the
+ *               correct/expected sequence. Reset the SCSI bus.
+ */
+static void
+tul_bad_seq(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+
+	if (pScb != NULL)
+		tul_append_done_scb(sc, pScb, HOST_BAD_PHAS);
+
+	tul_reset_scsi_bus(sc);
+	tul_reset_chip(sc, sc->sc_iot, sc->sc_ioh);
+}
+
+/*
+ * tul_push_sense_request - obtain auto sense data by pushing the
+ *                          SCB needing it back onto the pending
+ *			    queue with a REQUEST_SENSE CDB.
+ */
+static void
+tul_push_sense_request(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	pScb->SCB_BufLen   = pScb->SCB_SenseLen;
+	pScb->SCB_BufPAddr = pScb->SCB_SensePAddr;
+
+	pScb->SCB_Flags &= ~(FLAG_SG | FLAG_DIR);
+	pScb->SCB_Flags |= FLAG_RSENS | SCSI_DATA_IN;
+
+	pScb->SCB_Ident &= ~IDENT_DISC_PRIV;
+
+	pScb->SCB_TagMsg = 0;
+	pScb->SCB_TaStat = SCSI_OK;
+
+	bzero(pScb->SCB_CDB, sizeof(pScb->SCB_CDB));
+
+	pScb->SCB_CDBLen = 6;
+	pScb->SCB_CDB[0] = REQUEST_SENSE;
+	pScb->SCB_CDB[4] = pScb->SCB_SenseLen;
+
+	if ((pScb->SCB_Flags & SCSI_POLL) == 0)
+		timeout_add(&pScb->SCB_Xs->stimeout,
+		    (pScb->SCB_Timeout/1000) * hz);
+
+	tul_push_pend_scb(sc, pScb);
+}
+
+/*
+ * tul_main - process the active SCB, taking one off pending and making it
+ *            active if necessary, and any done SCB's created as
+ *            a result until there are no interrupts pending and no pending
+ *            SCB's that can be started.
+ */
+static void
+tul_main(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+
+	for (;;) {
+tul_scsi_label:
+		tul_scsi(sc, iot, ioh);
+
+		while ((pScb = tul_pop_done_scb(sc)) != NULL) {
+
+			switch (pScb->SCB_TaStat) {
+			case SCSI_CMD_TERMINATED:
+			case SCSI_ACA_ACTIVE:
+			case SCSI_CHECK:
+				pScb->SCB_Tcs->TCS_Flags &= 
+				    ~(FLAG_SYNC_DONE | FLAG_WIDE_DONE);
+
+				if ((pScb->SCB_Flags & FLAG_RSENS) != 0)
+					/* Check condition on check condition*/
+					pScb->SCB_HaStat = HOST_BAD_PHAS;
+
+				else {
+					tul_push_sense_request(sc, pScb);
+					goto tul_scsi_label;
+				}
+				break;
+
+			default:
+				if ((pScb->SCB_Flags & FLAG_RSENS) != 0)
+					/*
+					 * Return the original SCSI_CHECK, not
+					 * the status of the request sense
+					 * command!		
+					 */
+					pScb->SCB_TaStat = SCSI_CHECK;
+				break;
+			}
+
+			tul_done_scb(sc, pScb);
+		}
+
+		/*
+		 * If there are no interrupts pending, or we can't start
+		 * a pending sc, break out of the for(;;). Otherwise
+		 * continue the good work with another call to
+		 * tul_scsi().
+		 */
+		if (((bus_space_read_1(iot, ioh, TUL_STAT0) & INTPD) == 0) 
+		    && (tul_find_pend_scb(sc) == NULL))
+			break;
+	}
+}
+
+/*
+ * tul_scsi - service any outstanding interrupts. If there are none, try to
+ *            start another SCB currently in the pending queue.
+ */
+static void
+tul_scsi(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+	struct tcs *pTcs;
+	u_int8_t stat;
+
+	/* service pending interrupts asap */
+
+	stat = bus_space_read_1(iot, ioh, TUL_STAT0);
+	if ((stat & INTPD) != 0) {
+		sc->HCS_JSStatus0 = stat;
+		sc->HCS_JSStatus1 = bus_space_read_1(iot, ioh, TUL_STAT1);
+		sc->HCS_JSInt     = bus_space_read_1(iot, ioh, TUL_SISTAT);
+
+		sc->HCS_Phase = sc->HCS_JSStatus0 & PH_MASK;
+		
+		if ((sc->HCS_JSInt & SRSTD) != 0) {
+			tul_reset_scsi_bus(sc);
+			return;
+		}
+		
+		if ((sc->HCS_JSInt & RSELED) != 0) {
+			tul_resel(sc, iot, ioh);
+			return;
+		}
+
+		if ((sc->HCS_JSInt & (STIMEO | DISCD)) != 0) {
+			tul_busfree(sc, iot, ioh);
+			return;
+		}
+
+		if ((sc->HCS_JSInt & (SCMDN | SBSRV)) != 0) {
+			tul_next_state(sc, iot, ioh);
+			return;
+		}
+
+		if ((sc->HCS_JSInt & SELED) != 0)
+			tul_set_ssig(iot, ioh, 0, 0);
+	}
+
+	/*
+	 * There were no interrupts pending which required action elsewhere, so
+	 * see if it is possible to start the selection phase on a pending SCB
+	 */
+	if ((pScb = tul_find_pend_scb(sc)) == NULL)
+		return;
+
+	pTcs = pScb->SCB_Tcs;
+
+	/* program HBA's SCSI ID & target SCSI ID */
+	bus_space_write_1(iot, ioh, TUL_SID,
+	    (sc->sc_link.adapter_target << 4) | pScb->SCB_Target);
+
+	if ((pScb->SCB_Flags & SCSI_RESET) == 0) {
+		bus_space_write_1(iot, ioh, TUL_SYNCM, pTcs->TCS_JS_Period);
+
+		if ((pTcs->TCS_Flags & FLAG_NO_NEGOTIATE) == 0)
+			tul_select(sc, iot, ioh, pScb, SELATNSTOP);
+
+		else if (pScb->SCB_TagMsg != 0)
+			tul_select(sc, iot, ioh, pScb, SEL_ATN3);
+
+		else
+			tul_select(sc, iot, ioh, pScb, SEL_ATN);
+
+	} else {
+		tul_select(sc, iot, ioh, pScb, SELATNSTOP);
+		pScb->SCB_NxtStat = 8;
+	}
+
+	if (pScb->SCB_Flags & SCSI_POLL) {
+		for (; pScb->SCB_Timeout > 0; pScb->SCB_Timeout--) {
+			if (tul_wait(sc, iot, ioh, NO_OP) == -1)
+				return;
+			if (tul_next_state(sc, iot, ioh) == -1)
+				return;
+			delay(1000); /* Only happens in boot, so it's ok */
+		}
+		tul_timeout(pScb);
+	}
+}
+
+/*
+ * tul_data_over_run - return HOST_OK for all SCSI opcodes where BufLen
+ *                     is an 'Allocation Length'. All other SCSI opcodes
+ *		       get HOST_DO_DU as they SHOULD have xferred all the
+ *		       data requested.
+ * 
+ *		       The list of opcodes using 'Allocation Length' was
+ * 		       found by scanning all the SCSI-3 T10 drafts. See
+ *		       www.t10.org for the curious with a .pdf reader.
+ */
+static u_int8_t
+tul_data_over_run(pScb)
+	struct iha_scsi_req_q *pScb;
+{
+	switch (pScb->SCB_CDB[0]) {
+	case 0x03: /* Request Sense                   SPC-2 */
+	case 0x12: /* Inquiry                         SPC-2 */
+	case 0x1a: /* Mode Sense (6 byte version)     SPC-2 */
+	case 0x1c: /* Receive Diagnostic Results      SPC-2 */
+	case 0x23: /* Read Format Capacities          MMC-2 */
+	case 0x29: /* Read Generation                 SBC   */
+	case 0x34: /* Read Position                   SSC-2 */
+	case 0x37: /* Read Defect Data                SBC   */
+	case 0x3c: /* Read Buffer                     SPC-2 */
+	case 0x42: /* Read Sub Channel                MMC-2 */
+	case 0x43: /* Read TOC/PMA/ATIP               MMC   */
+
+	/* XXX - 2 with same opcode of 0x44? */
+	case 0x44: /* Read Header/Read Density Suprt  MMC/SSC*/
+
+	case 0x46: /* Get Configuration               MMC-2 */
+	case 0x4a: /* Get Event/Status Notification   MMC-2 */
+	case 0x4d: /* Log Sense                       SPC-2 */
+	case 0x51: /* Read Disc Information           MMC   */
+	case 0x52: /* Read Track Information          MMC   */
+	case 0x59: /* Read Master CUE                 MMC   */
+	case 0x5a: /* Mode Sense (10 byte version)    SPC-2 */
+	case 0x5c: /* Read Buffer Capacity            MMC   */
+	case 0x5e: /* Persistant Reserve In           SPC-2 */
+	case 0x84: /* Receive Copy Results            SPC-2 */
+	case 0xa0: /* Report LUNs                     SPC-2 */
+	case 0xa3: /* Various Report requests         SBC-2/SCC-2*/
+	case 0xa4: /* Report Key                      MMC-2 */
+	case 0xad: /* Read DVD Structure              MMC-2 */
+	case 0xb4: /* Read Element Status (Attached)  SMC   */
+	case 0xb5: /* Request Volume Element Address  SMC   */
+	case 0xb7: /* Read Defect Data (12 byte ver.) SBC   */
+	case 0xb8: /* Read Element Status (Independ.) SMC   */
+	case 0xba: /* Report Redundancy               SCC-2 */
+	case 0xbd: /* Mechanism Status                MMC   */
+	case 0xbe: /* Report Basic Redundancy         SCC-2 */
+
+		return (HOST_OK);
+		break;
+		
+	default:
+		return (HOST_DO_DU);
+		break;
+	}
+}
+
+/*
+ * tul_next_state - prcess the current SCB as requested in it's 
+ *                  SCB_NxtStat member.
+ */
+static int
+tul_next_state(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	if (sc->HCS_ActScb == NULL)
+		return (-1);
+
+	switch (sc->HCS_ActScb->SCB_NxtStat) {
+	case 1:
+		if (tul_state_1(sc, iot, ioh) == 3)
+			goto state_3;
+		break;
+
+	case 2:
+		switch (tul_state_2(sc, iot, ioh)) {
+		case 3:	 goto state_3;
+		case 4:	 goto state_4;
+		default: break;
+		}
+		break;
+
+	case 3:
+	state_3:
+		if (tul_state_3(sc, iot, ioh) == 4)
+			goto state_4;
+		break;
+
+	case 4:
+	state_4:
+		switch (tul_state_4(sc, iot, ioh)) {
+		case 0:	 return (0);
+		case 6:	 goto state_6;
+		default: break;
+		}
+		break;
+
+	case 5:
+		switch (tul_state_5(sc, iot, ioh)) {
+		case 4:	 goto state_4;
+		case 6:	 goto state_6;
+		default: break;
+		}
+		break;
+
+	case 6:
+	state_6:
+		tul_state_6(sc, iot, ioh);
+		break;
+
+	case 8:
+		tul_state_8(sc, iot, ioh);
+		break;
+
+	default:
+#ifdef IHA_DEBUG_STATE
+		printf("[debug] -unknown state: %i-\n",
+		    sc->HCS_ActScb->SCB_NxtStat);
+#endif
+		tul_bad_seq(sc);
+		break;
+	}
+
+	return (-1);
+}
+
+/*
+ * tul_state_1 - selection is complete after a SELATNSTOP. If the target
+ *               has put the bus into MSG_OUT phase start wide/sync
+ *               negotiation. Otherwise clear the FIFO and go to state 3,
+ *	    	 which will send the SCSI CDB to the target.
+ */
+static int
+tul_state_1(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+	struct tcs *pTcs;
+	u_int16_t flags;
+
+	tul_mark_busy_scb(pScb);
+
+	pTcs = pScb->SCB_Tcs;
+
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, pTcs->TCS_SConfig0);
+
+	/*
+	 * If we are in PHASE_MSG_OUT, send
+	 *     a) IDENT message (with tags if appropriate)
+	 *     b) WDTR if the target is configured to negotiate wide xfers
+	 *     ** OR **
+	 *     c) SDTR if the target is configured to negotiate sync xfers
+	 *	  but not wide ones
+	 *
+	 * If we are NOT, then the target is not asking for anything but
+	 * the data/command, so go straight to state 3.
+	 */
+	if (sc->HCS_Phase == PHASE_MSG_OUT) {
+		bus_space_write_1(iot, ioh, TUL_SCTRL1, (ESBUSIN | EHRSL));
+		bus_space_write_1(iot, ioh, TUL_SFIFO,	pScb->SCB_Ident);
+
+		if (pScb->SCB_TagMsg != 0) {
+			bus_space_write_1(iot, ioh, TUL_SFIFO,
+			    pScb->SCB_TagMsg);
+			bus_space_write_1(iot, ioh, TUL_SFIFO,
+			    pScb->SCB_TagId);
+		}
+
+		flags = pTcs->TCS_Flags;
+		if ((flags & FLAG_NO_NEG_WIDE) == 0) {
+			if (tul_msgout_wide(sc, iot, ioh) == -1)
+				return (-1);
+		} else if ((flags & FLAG_NO_NEG_SYNC) == 0) {
+			if (tul_msgout_sync(sc, iot, ioh) == -1)
+				return (-1);
+		}
+
+	} else {
+		bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+		tul_set_ssig(iot, ioh, REQ | BSY | SEL | ATN, 0);
+	}
+
+	return (3);
+}
+
+/*
+ * tul_state_2 - selection is complete after a SEL_ATN or SEL_ATN3. If the SCSI
+ *		 CDB has already been send, go to state 4 to start the data
+ *               xfer. Otherwise reset the FIFO and go to state 3, sending 
+ *		 the SCSI CDB.
+ */
+static int
+tul_state_2(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+
+	tul_mark_busy_scb(pScb);
+
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, pScb->SCB_Tcs->TCS_SConfig0);
+
+	if ((sc->HCS_JSStatus1 & CPDNE) != 0)
+		return (4);
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+
+	tul_set_ssig(iot, ioh, REQ | BSY | SEL | ATN, 0);
+
+	return (3);
+}
+
+/*
+ * tul_state_3 - send the SCSI CDB to the target, processing any status
+ *		 or other messages received until that is done or
+ *               abandoned.
+ */
+static int
+tul_state_3(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+	u_int16_t flags;
+
+	for (;;)
+		switch (sc->HCS_Phase) {
+		case PHASE_CMD_OUT:
+			bus_space_write_multi_1(iot, ioh, TUL_SFIFO,
+			    pScb->SCB_CDB, pScb->SCB_CDBLen);
+			if (tul_wait(sc, iot, ioh, XF_FIFO_OUT) == -1)
+				return (-1);
+			else if (sc->HCS_Phase == PHASE_CMD_OUT) {
+				tul_bad_seq(sc);
+				return (-1);
+			} else
+				return (4);
+
+		case PHASE_MSG_IN:
+			pScb->SCB_NxtStat = 3;
+			if (tul_msgin(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		case PHASE_STATUS_IN:
+			if (tul_status_msg(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		case PHASE_MSG_OUT:
+			flags = pScb->SCB_Tcs->TCS_Flags;
+			if ((flags & FLAG_NO_NEG_SYNC) != 0) {
+				if (tul_msgout(sc, iot, ioh, MSG_NOP) == -1)
+					return (-1);
+			} else if (tul_msgout_sync(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		default:
+			printf("[debug] -s3- bad phase = %d\n", sc->HCS_Phase);
+			tul_bad_seq(sc);
+			return (-1);
+		}
+}
+
+/* 
+ * tul_state_4 - start a data xfer. Handle any bus state
+ *               transitions until PHASE_DATA_IN/_OUT
+ *               or the attempt is abandoned. If there is 
+ *               no data to xfer, go to state 6 and finish
+ *               processing the current SCB.
+ */
+static int
+tul_state_4(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+
+	if ((pScb->SCB_Flags & FLAG_DIR) == FLAG_DIR)
+		return (6); /* Both dir flags set => NO xfer was requested */
+
+	for (;;) {
+		if (pScb->SCB_BufLen == 0)
+			return (6);
+
+		switch (sc->HCS_Phase) {
+		case PHASE_STATUS_IN:
+			if ((pScb->SCB_Flags & FLAG_DIR) != 0)
+				pScb->SCB_HaStat = tul_data_over_run(pScb);
+			if ((tul_status_msg(sc, iot, ioh)) == -1)
+				return (-1);
+			break;
+
+		case PHASE_MSG_IN:
+			pScb->SCB_NxtStat = 4;
+			if (tul_msgin(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		case PHASE_MSG_OUT:
+			if ((sc->HCS_JSStatus0 & SPERR) != 0) {
+				pScb->SCB_BufLen = 0;
+				pScb->SCB_HaStat = HOST_SPERR;
+				if (tul_msgout(sc, iot, ioh, MSG_IDE) == -1)
+					return (-1);
+				else
+					return (6);
+			} else {
+				if (tul_msgout(sc, iot, ioh, MSG_NOP) == -1)
+					return (-1);
+			}
+			break;
+
+		case PHASE_DATA_IN:
+			return (tul_xfer_data(pScb, iot, ioh, SCSI_DATA_IN));
+
+		case PHASE_DATA_OUT:
+			return (tul_xfer_data(pScb, iot, ioh, SCSI_DATA_OUT));
+
+		default:
+			tul_bad_seq(sc);
+			return (-1);
+		}
+	}
+}
+
+/*
+ * tul_state_5 - handle the partial or final completion of the current
+ *               data xfer. If DMA is still active stop it. If there is 
+ *		 more data to xfer, go to state 4 and start the xfer.
+ *               If not go to state 6 and finish the SCB.
+ */
+static int
+tul_state_5(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+	struct iha_sg_element *pSg;
+	u_int32_t cnt;
+	u_int16_t period;
+	u_int8_t stat;
+	long xcnt;  /* cannot use unsigned!! see code: if (xcnt < 0) */
+	int i;
+
+	cnt = bus_space_read_4(iot, ioh, TUL_STCNT0) & TCNT;
+	
+	/*
+	 * Stop any pending DMA activity and check for parity error.
+	 */
+
+	if ((bus_space_read_1(iot, ioh, TUL_DCMD) & XDIR) != 0) {
+		/* Input Operation */
+		if ((sc->HCS_JSStatus0 & SPERR) != 0)
+			pScb->SCB_HaStat = HOST_SPERR;
+
+		if ((bus_space_read_1(iot, ioh, TUL_ISTUS1) & XPEND) != 0) {
+			bus_space_write_1(iot, ioh, TUL_DCTRL0,
+			    bus_space_read_1(iot, ioh, TUL_DCTRL0) | SXSTP);
+			while (bus_space_read_1(iot, ioh, TUL_ISTUS1) & XPEND)
+				;
+		}
+
+	} else {
+		/* Output Operation */
+		if ((sc->HCS_JSStatus1 & SXCMP) == 0) {
+			period = pScb->SCB_Tcs->TCS_JS_Period; 
+			if ((period & PERIOD_WIDE_SCSI) != 0)
+				cnt += (bus_space_read_1(iot, ioh,
+					    TUL_SFIFOCNT) & FIFOC) << 1;
+			else
+				cnt += (bus_space_read_1(iot, ioh,
+					    TUL_SFIFOCNT) & FIFOC);
+		}
+
+		if ((bus_space_read_1(iot, ioh, TUL_ISTUS1) & XPEND) != 0) {
+			bus_space_write_1(iot, ioh, TUL_DCMD, ABTXFR);
+			do
+				stat = bus_space_read_1(iot, ioh, TUL_ISTUS0);
+			while ((stat & DABT) == 0);
+		}
+
+		if ((cnt == 1) && (sc->HCS_Phase == PHASE_DATA_OUT)) {
+			if (tul_wait(sc, iot, ioh, XF_FIFO_OUT) == -1)
+				return (-1);
+			cnt = 0;
+
+		} else if ((sc->HCS_JSStatus1 & SXCMP) == 0)
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+	}
+
+	if (cnt == 0) {
+		pScb->SCB_BufLen = 0;
+		return (6);
+	}
+
+	/* Update active data pointer and restart the I/O at the new point */
+
+	xcnt		 = pScb->SCB_BufLen - cnt; /* xcnt == bytes xferred */
+	pScb->SCB_BufLen = cnt;			   /* cnt  == bytes left    */
+
+	if ((pScb->SCB_Flags & FLAG_SG) != 0) {
+		pSg = &pScb->SCB_SGList[pScb->SCB_SGIdx];
+		for (i = pScb->SCB_SGIdx; i < pScb->SCB_SGMax; pSg++, i++) {
+			xcnt -= pSg->SG_Len;
+			if (xcnt < 0) {
+				xcnt += pSg->SG_Len;
+
+				pSg->SG_Ptr += xcnt;
+				pSg->SG_Len -= xcnt;
+
+				pScb->SCB_BufPAddr += (i - pScb->SCB_SGIdx)
+					* sizeof(struct iha_sg_element);
+				pScb->SCB_SGLen	  = pScb->SCB_SGMax - i;
+				pScb->SCB_SGIdx	  = i;
+
+				return (4);
+			}
+		}
+		return (6);
+
+	} else
+		pScb->SCB_BufPAddr += xcnt;
+
+	return (4);
+}
+
+/*
+ * tul_state_6 - finish off the active scb (may require several
+ *               iterations if PHASE_MSG_IN) and return -1 to indicate 
+ *		 the bus is free.
+ */
+static int
+tul_state_6(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	for (;;)
+		switch (sc->HCS_Phase) {
+		case PHASE_STATUS_IN:
+			if (tul_status_msg(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		case PHASE_MSG_IN:
+			sc->HCS_ActScb->SCB_NxtStat = 6;
+			if ((tul_msgin(sc, iot, ioh)) == -1)
+				return (-1);
+			break;
+
+		case PHASE_MSG_OUT:
+			if ((tul_msgout(sc, iot, ioh, MSG_NOP)) == -1)
+				return (-1);
+			break;
+
+		case PHASE_DATA_IN:
+			if (tul_xpad_in(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		case PHASE_DATA_OUT:
+			if (tul_xpad_out(sc, iot, ioh) == -1)
+				return (-1);
+			break;
+
+		default:
+			tul_bad_seq(sc);
+			return (-1);
+		}
+}
+
+/*
+ * tul_state_8 - reset the active device and all busy SCBs using it
+ */
+static int
+tul_state_8(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+	u_int32_t i;
+	u_int8_t tar;
+
+	if (sc->HCS_Phase == PHASE_MSG_OUT) {
+		bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_DEVRST);
+
+		pScb = sc->HCS_ActScb;
+		
+		/* This SCB finished correctly -- resetting the device */
+		tul_append_done_scb(sc, pScb, HOST_OK);
+
+		tul_reset_tcs(pScb->SCB_Tcs, sc->HCS_SConf1);
+
+		tar = pScb->SCB_Target;
+		for (i = 0, pScb = sc->HCS_Scb; i < IHA_MAX_SCB; i++, pScb++)
+			if (pScb->SCB_Target == tar)
+				switch (pScb->SCB_Status) {
+				case STATUS_BUSY:
+					tul_append_done_scb(sc,
+					    pScb, HOST_DEV_RST);
+					break;
+
+				case STATUS_SELECT:
+					tul_push_pend_scb(sc, pScb);
+					break;
+					
+				default:
+					break;
+				}
+
+		sc->HCS_Flags |= FLAG_EXPECT_DISC;
+
+		if (tul_wait(sc, iot, ioh, XF_FIFO_OUT) == -1)
+			return (-1);
+	}
+
+	tul_bad_seq(sc);
+	return (-1);
+}
+
+/*
+ * tul_xfer_data - initiate the DMA xfer of the data
+ */
+static int
+tul_xfer_data(pScb, iot, ioh, direction)
+	struct iha_scsi_req_q *pScb;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	int direction;
+{
+	u_int32_t xferlen;
+	u_int8_t xfertype;
+
+	if ((pScb->SCB_Flags & FLAG_DIR) != direction)
+		return (6); /* wrong direction, abandon I/O */
+
+	bus_space_write_4(iot, ioh, TUL_STCNT0, pScb->SCB_BufLen);
+
+	if ((pScb->SCB_Flags & FLAG_SG) == 0) {
+		xferlen  = pScb->SCB_BufLen;
+		xfertype = (direction == SCSI_DATA_IN) ? ST_X_IN : ST_X_OUT;
+
+	} else {
+		xferlen  = pScb->SCB_SGLen * sizeof(struct iha_sg_element);
+		xfertype = (direction == SCSI_DATA_IN) ? ST_SG_IN : ST_SG_OUT;
+	}
+
+	bus_space_write_4(iot, ioh, TUL_DXC,  xferlen);
+	bus_space_write_4(iot, ioh, TUL_DXPA, pScb->SCB_BufPAddr);
+	bus_space_write_1(iot, ioh, TUL_DCMD, xfertype);
+
+	bus_space_write_1(iot, ioh, TUL_SCMD,
+	    (direction == SCSI_DATA_IN) ? XF_DMA_IN : XF_DMA_OUT);
+
+	pScb->SCB_NxtStat = 5;
+
+	return (0);
+}
+
+static int
+tul_xpad_in(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+
+	if ((pScb->SCB_Flags & FLAG_DIR) != 0)
+		pScb->SCB_HaStat = HOST_DO_DU;
+
+	for (;;) {
+		if ((pScb->SCB_Tcs->TCS_JS_Period & PERIOD_WIDE_SCSI) != 0)
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 2);
+		else
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+
+		switch (tul_wait(sc, iot, ioh, XF_FIFO_IN)) {
+		case -1:
+			return (-1);
+
+		case PHASE_DATA_IN:
+			bus_space_read_1(iot, ioh, TUL_SFIFO);
+			break;
+
+		default:
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+			return (6);
+		}
+	}
+}
+
+static int
+tul_xpad_out(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb = sc->HCS_ActScb;
+
+	if ((pScb->SCB_Flags & FLAG_DIR) != 0)
+		pScb->SCB_HaStat = HOST_DO_DU;
+
+	for (;;) {
+		if ((pScb->SCB_Tcs->TCS_JS_Period & PERIOD_WIDE_SCSI) != 0)
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 2);
+		else
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+
+		bus_space_write_1(iot, ioh, TUL_SFIFO, 0);
+
+		switch (tul_wait(sc, iot, ioh, XF_FIFO_OUT)) {
+		case -1:
+			return (-1);
+
+		case PHASE_DATA_OUT:
+			break;
+
+		default:
+			/* Disable wide CPU to allow read 16 bits */
+			bus_space_write_1(iot, ioh, TUL_SCTRL1, EHRSL);
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+			return (6);
+		}
+	}
+}
+
+static int
+tul_status_msg(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+	u_int8_t msg;
+	int phase;
+
+	if ((phase = tul_wait(sc, iot, ioh, CMD_COMP)) == -1)
+		return (-1);
+
+	pScb = sc->HCS_ActScb;
+	
+	pScb->SCB_TaStat = bus_space_read_1(iot, ioh, TUL_SFIFO);
+
+	if (phase == PHASE_MSG_OUT) {
+		if ((sc->HCS_JSStatus0 & SPERR) == 0)
+			bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_NOP);
+		else
+			bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_PARITY);
+
+		return (tul_wait(sc, iot, ioh, XF_FIFO_OUT));
+
+	} else if (phase == PHASE_MSG_IN) {
+		msg = bus_space_read_1(iot, ioh, TUL_SFIFO);
+
+		if ((sc->HCS_JSStatus0 & SPERR) != 0)
+			switch (tul_wait(sc, iot, ioh, MSG_ACCEPT)) {
+			case -1:
+				return (-1);
+			case PHASE_MSG_OUT:
+				bus_space_write_1(iot, ioh, TUL_SFIFO,
+				    MSG_PARITY);
+				return (tul_wait(sc, iot, ioh, XF_FIFO_OUT));
+			default:
+				tul_bad_seq(sc);
+				return (-1);
+			}
+
+		if (msg == MSG_COMP) {
+			if ((pScb->SCB_TaStat 
+				& (SCSI_INTERM | SCSI_BUSY)) == SCSI_INTERM) {
+				tul_bad_seq(sc);
+				return (-1);
+			}
+			sc->HCS_Flags |= FLAG_EXPECT_DONE_DISC;
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+			return (tul_wait(sc, iot, ioh, MSG_ACCEPT));
+		}
+
+		if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) {
+			if ((pScb->SCB_TaStat 
+				 & (SCSI_INTERM | SCSI_BUSY)) == SCSI_INTERM)
+				return (tul_wait(sc, iot, ioh, MSG_ACCEPT));
+		}
+	}
+
+	tul_bad_seq(sc);
+	return (-1);
+}
+
+/*
+ * tul_busfree - SCSI bus free detected as a result of a TIMEOUT or
+ *		 DISCONNECT interrupt. Reset the tulip FIFO and
+ *		 SCONFIG0 and enable hardware reselect. Move any active
+ *		 SCB to HCS_DoneScb list. Return an appropriate host status
+ *		 if an I/O was active.
+ */
+static void
+tul_busfree(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0,	  RSFIFO);
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, SCONFIG0DEFAULT);
+	bus_space_write_1(iot, ioh, TUL_SCTRL1,	  EHRSL);
+
+	pScb = sc->HCS_ActScb;
+
+	if (pScb != NULL) {
+		if (pScb->SCB_Status == STATUS_SELECT)
+			/* selection timeout   */
+			tul_append_done_scb(sc, pScb, HOST_SEL_TOUT);
+		else
+			/* Unexpected bus free */
+			tul_append_done_scb(sc, pScb, HOST_BAD_PHAS);
+
+	}
+}
+
+static void
+tul_reset_scsi_bus(sc)
+	struct iha_softc *sc;
+{
+	struct iha_scsi_req_q *pScb;
+	struct tcs *pTcs;
+	int i, s;
+
+	s = splbio();
+
+	tul_reset_dma(sc->sc_iot, sc->sc_ioh);
+
+	for (i = 0, pScb = sc->HCS_Scb; i < IHA_MAX_SCB; i++, pScb++)
+		switch (pScb->SCB_Status) {
+		case STATUS_BUSY:
+			tul_append_done_scb(sc, pScb, HOST_SCSI_RST);
+			break;
+
+		case STATUS_SELECT:
+			tul_push_pend_scb(sc, pScb);
+			break;
+
+		default:
+			break;
+		}
+
+	for (i = 0, pTcs = sc->HCS_Tcs; i < IHA_MAX_TARGETS; i++, pTcs++)
+		tul_reset_tcs(pTcs, sc->HCS_SConf1);
+
+	splx(s);
+}
+
+/*
+ * tul_resel - handle a detected SCSI bus reselection request.
+ */
+static int
+tul_resel(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct iha_scsi_req_q *pScb;
+	struct tcs *pTcs;
+	u_int8_t tag, target, lun, msg, abortmsg;
+
+	if (sc->HCS_ActScb != NULL) {
+		if ((sc->HCS_ActScb->SCB_Status == STATUS_SELECT))
+			tul_push_pend_scb(sc, sc->HCS_ActScb); /* sets ActScb to NULL */
+		else
+			sc->HCS_ActScb = NULL;
+	}
+
+	target = bus_space_read_1(iot, ioh, TUL_SBID);
+	lun    = bus_space_read_1(iot, ioh, TUL_SALVC) & IDENT_LUN;
+
+	pTcs = &sc->HCS_Tcs[target];
+
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, pTcs->TCS_SConfig0);
+	bus_space_write_1(iot, ioh, TUL_SYNCM,	  pTcs->TCS_JS_Period);
+
+	abortmsg = MSG_ABORT; /* until a valid tag has been obtained */
+
+	if (pTcs->TCS_NonTagScb != NULL)
+		/* There is a non-tagged I/O active on the target */
+		pScb = pTcs->TCS_NonTagScb;
+
+	else {
+		/* 
+		 * Since there is no active non-tagged operation
+		 * read the tag type, the tag itself, and find
+		 * the appropriate pScb by indexing HCS_Scb with
+		 * the tag.
+		 */
+
+		switch (tul_wait(sc, iot, ioh, MSG_ACCEPT)) {
+		case -1:
+			return (-1);
+		case PHASE_MSG_IN:
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+			if ((tul_wait(sc, iot, ioh, XF_FIFO_IN)) == -1)
+				return (-1);
+			break;
+		default:
+			goto abort;
+		}
+
+		msg = bus_space_read_1(iot, ioh, TUL_SFIFO); /* Read Tag Msg */
+
+		if ((msg < MSG_STAG) || (msg > MSG_OTAG))
+			goto abort;
+
+		switch (tul_wait(sc, iot, ioh, MSG_ACCEPT)) {
+		case -1:
+			return (-1);
+		case PHASE_MSG_IN:
+			bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+			if ((tul_wait(sc, iot, ioh, XF_FIFO_IN)) == -1)
+				return (-1);
+			break;
+		default:
+			goto abort;
+		}
+
+		tag  = bus_space_read_1(iot, ioh, TUL_SFIFO); /* Read Tag ID */
+		pScb = &sc->HCS_Scb[tag];
+
+		abortmsg = MSG_ABORT_TAG; /* Now that we have valdid tag! */
+	}
+
+	if ((pScb->SCB_Target != target)  
+	    || (pScb->SCB_Lun != lun)
+	    || (pScb->SCB_Status != STATUS_BUSY)) {
+abort:
+		tul_msgout_abort(sc, iot, ioh, abortmsg);
+		return (-1);
+	}
+
+	sc->HCS_ActScb = pScb;
+
+	if (tul_wait(sc, iot, ioh, MSG_ACCEPT) == -1)
+		return (-1);
+
+	return(tul_next_state(sc, iot, ioh));
+}
+
+static int
+tul_msgin(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	u_int16_t flags;
+	u_int8_t msg;
+	int phase;
+
+	for (;;) {
+		if ((bus_space_read_1(iot, ioh, TUL_SFIFOCNT) & FIFOC) > 0)
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+
+		bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+
+		phase = tul_wait(sc, iot, ioh, XF_FIFO_IN);
+		msg   = bus_space_read_1(iot, ioh, TUL_SFIFO);
+
+		switch (msg) {
+		case MSG_DISC:
+			sc->HCS_Flags |= FLAG_EXPECT_DISC;
+			if (tul_wait(sc, iot, ioh, MSG_ACCEPT) != -1)
+				tul_bad_seq(sc);
+			phase = -1;
+			break;
+		case MSG_SDP:
+		case MSG_RESTORE:
+		case MSG_NOP:
+			phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+			break;
+		case MSG_REJ:
+			/* XXX - need to clear FIFO like other 'Clear ATN'?*/
+			tul_set_ssig(iot, ioh, REQ | BSY | SEL | ATN, 0);
+			flags = sc->HCS_ActScb->SCB_Tcs->TCS_Flags;
+			if ((flags & FLAG_NO_NEG_SYNC) == 0)
+				tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+			phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+			break;
+		case MSG_EXTEND:
+			phase = tul_msgin_extend(sc, iot, ioh);
+			break;
+		case MSG_IGNOREWIDE:
+			phase = tul_msgin_ignore_wid_resid(sc, iot, ioh);
+			break;
+		case MSG_COMP:
+			sc->HCS_Flags |= FLAG_EXPECT_DONE_DISC;
+			bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+			phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+			if (phase != -1) {
+				tul_bad_seq(sc);
+				return (-1);
+			}
+			break;
+		default:
+			printf("[debug] tul_msgin: bad msg type: %d\n", msg);
+			phase = tul_msgout_reject(sc, iot, ioh);
+			break;
+		}
+
+		if (phase != PHASE_MSG_IN)
+			return (phase);
+	}
+	/* NOTREACHED */
+}
+
+static int
+tul_msgin_ignore_wid_resid(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	int phase;
+
+	phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+
+	if (phase == PHASE_MSG_IN) {
+		if (tul_wait(sc, iot, ioh, XF_FIFO_IN) == -1)
+			return (-1);
+
+		bus_space_write_1(iot, ioh, TUL_SFIFO, 0); /* put pad	     */
+		bus_space_read_1 (iot, ioh, TUL_SFIFO);	   /* get IGNORE     */
+		bus_space_read_1 (iot, ioh, TUL_SFIFO);	   /* get pad	     */
+
+		return (tul_wait(sc, iot, ioh, MSG_ACCEPT));
+	}
+	else
+		return (phase);
+}
+
+static int
+tul_msgin_extend(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	u_int16_t flags;
+	int i, phase, msglen, msgcode;
+
+	/* XXX - can we just stop reading and reject, or do we have to
+	 *	 read all input, discarding the excess, and then reject
+	 */
+	for (i = 0; i < IHA_MAX_EXTENDED_MSG; i++) {
+		phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+
+		if (phase != PHASE_MSG_IN)
+			return (phase);
+
+		bus_space_write_4(iot, ioh, TUL_STCNT0, 1);
+
+		if (tul_wait(sc, iot, ioh, XF_FIFO_IN) == -1)
+			return (-1);
+
+		sc->HCS_Msg[i] = bus_space_read_1(iot, ioh, TUL_SFIFO);
+
+		if (sc->HCS_Msg[0] == i)
+			break;
+	}
+
+	msglen	= sc->HCS_Msg[0];
+	msgcode = sc->HCS_Msg[1];
+
+	if ((msglen == MSG_LEN_SYNC_XFER) && (msgcode == MSG_CODE_SYNC_XFER)) {
+		if (tul_msgin_sync(sc) == 0) {
+			tul_sync_done(sc, iot, ioh);
+			return (tul_wait(sc, iot, ioh, MSG_ACCEPT));
+		}
+
+		tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+
+		phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+		if (phase != PHASE_MSG_OUT)
+			return (phase);
+
+		/* Clear FIFO for important message - final SYNC offer */
+		bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+
+		tul_sync_done(sc, iot, ioh); /* This is our final offer */
+
+		bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_EXTEND);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, 3);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, 1);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, sc->HCS_Msg[2]);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, sc->HCS_Msg[3]);
+
+	} else if ((msglen == MSG_LEN_WIDE_XFER)
+	               && (msgcode == MSG_CODE_WIDE_XFER)) {
+
+		flags = sc->HCS_ActScb->SCB_Tcs->TCS_Flags;
+
+		if ((flags & FLAG_NO_WIDE) != 0)
+			sc->HCS_Msg[2] = 0;	/* Offer async xfers only    */
+
+		else if (sc->HCS_Msg[2] > 2)	/* BAD MSG: 2 is max  value  */
+			return (tul_msgout_reject(sc, iot, ioh));
+
+		else if (sc->HCS_Msg[2] == 2)	/* a request for 32 bit xfers*/
+			sc->HCS_Msg[2] = 1;	/* Offer 16 instead	     */
+
+		else {
+			tul_wdtr_done(sc, iot, ioh);
+			if ((flags & FLAG_NO_NEG_SYNC) == 0)
+				tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+			return (tul_wait(sc, iot, ioh, MSG_ACCEPT));
+		}
+
+		tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+
+		phase = tul_wait(sc, iot, ioh, MSG_ACCEPT);
+		if (phase != PHASE_MSG_OUT)
+			return (phase);
+
+		/* WDTR msg out */
+		bus_space_write_1(iot, ioh, TUL_SFIFO,	   MSG_EXTEND);
+		bus_space_write_1(iot, ioh, TUL_SFIFO,		    2);
+		bus_space_write_1(iot, ioh, TUL_SFIFO,		    3);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, sc->HCS_Msg[2]);
+
+	} else
+		return (tul_msgout_reject(sc, iot, ioh));
+
+	return (tul_wait(sc, iot, ioh, XF_FIFO_OUT));
+}
+
+/*
+ * tul_msgin_sync - check SDTR msg in HCS_Msg. If the offer is
+ *                  acceptable leave HCS_Msg as is and return 0.
+ *                  If the negotiation must continue, modify HCS_Msg
+ *                  as needed and return 1. Else return 0.
+ */
+static int
+tul_msgin_sync(sc)
+	struct iha_softc *sc;
+{
+	u_int16_t flags;
+	u_int8_t default_period;
+	int newoffer;
+
+	flags = sc->HCS_ActScb->SCB_Tcs->TCS_Flags;
+
+	default_period = tul_rate_tbl[flags & FLAG_SCSI_RATE];
+
+	if (sc->HCS_Msg[3] == 0) /* target offered async only. Accept it. */
+		return (0);
+
+	newoffer = 0;
+
+	if ((flags & FLAG_NO_SYNC) != 0) {
+		sc->HCS_Msg[3] = 0;
+		newoffer   = 1;
+	}
+
+	if (sc->HCS_Msg[3] > IHA_MAX_TARGETS-1) {
+		sc->HCS_Msg[3] = IHA_MAX_TARGETS-1;
+		newoffer   = 1;
+	}
+
+	if (sc->HCS_Msg[2] < default_period) {
+		sc->HCS_Msg[2] = default_period;
+		newoffer   = 1;
+	}
+
+	if (sc->HCS_Msg[2] >= 59) {
+		sc->HCS_Msg[3] = 0;
+		newoffer   = 1;
+	}
+
+	return (newoffer);
+}
+
+static int
+tul_msgout(sc, iot, ioh, msg)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t   msg;
+{
+	bus_space_write_1(iot, ioh, TUL_SFIFO, msg);
+
+	return (tul_wait(sc, iot, ioh, XF_FIFO_OUT));
+}
+
+static void
+tul_msgout_abort(sc, iot, ioh,	aborttype)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   aborttype;
+{
+	tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+
+	switch (tul_wait(sc, iot, ioh, MSG_ACCEPT)) {
+	case -1:
+		break;
+
+	case PHASE_MSG_OUT:
+		bus_space_write_1(iot, ioh, TUL_SFIFO, aborttype );
+
+		sc->HCS_Flags |= FLAG_EXPECT_DISC;
+
+		if (tul_wait(sc, iot, ioh, XF_FIFO_OUT) != -1)
+			tul_bad_seq(sc);
+		break;
+
+	default:
+		tul_bad_seq(sc);
+		break;
+	}
+}
+
+static int
+tul_msgout_reject(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	int phase;
+
+	tul_set_ssig(iot, ioh, REQ | BSY | SEL, ATN);
+
+	if ((phase = tul_wait(sc, iot, ioh, MSG_ACCEPT)) == -1)
+		return (-1);
+
+	if (phase == PHASE_MSG_OUT) {
+		bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_REJ);
+		return (tul_wait(sc, iot, ioh, XF_FIFO_OUT));
+	}
+
+	return (phase);
+}
+
+static int
+tul_msgout_wide(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	int phase;
+
+	sc->HCS_ActScb->SCB_Tcs->TCS_Flags |= FLAG_WIDE_DONE;
+
+	bus_space_write_1(iot, ioh, TUL_SFIFO, MSG_EXTEND);
+	bus_space_write_1(iot, ioh, TUL_SFIFO,		2); /* Message length*/
+	bus_space_write_1(iot, ioh, TUL_SFIFO,		3); /* WDTR request  */
+	bus_space_write_1(iot, ioh, TUL_SFIFO,		1); /* 16 bits xfer  */
+
+	phase = tul_wait(sc, iot, ioh, XF_FIFO_OUT);
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+	tul_set_ssig(iot, ioh, REQ | BSY | SEL | ATN, 0);
+
+	return (phase);
+}
+
+static int
+tul_msgout_sync(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	u_int16_t rateindex;
+	u_int8_t sync_rate;
+	int phase;
+
+	rateindex = sc->HCS_ActScb->SCB_Tcs->TCS_Flags & FLAG_SCSI_RATE;
+
+	sync_rate = tul_rate_tbl[rateindex];
+
+	bus_space_write_1(iot, ioh, TUL_SFIFO,	      MSG_EXTEND);
+	bus_space_write_1(iot, ioh, TUL_SFIFO,		       3); /* Msg len*/
+	bus_space_write_1(iot, ioh, TUL_SFIFO,		       1); /* SDTR   */
+	bus_space_write_1(iot, ioh, TUL_SFIFO,	       sync_rate);
+	bus_space_write_1(iot, ioh, TUL_SFIFO, IHA_MAX_TARGETS-1); /* REQ/ACK*/
+
+	phase = tul_wait(sc, iot, ioh, XF_FIFO_OUT);
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSFIFO);
+	tul_set_ssig(iot, ioh, REQ | BSY | SEL | ATN, 0);
+
+	return (phase);
+}
+
+static void
+tul_wdtr_done(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct tcs *pTcs = sc->HCS_ActScb->SCB_Tcs;
+
+	pTcs->TCS_JS_Period = 0;
+
+	if (sc->HCS_Msg[2] != 0)
+		pTcs->TCS_JS_Period |= PERIOD_WIDE_SCSI;
+
+	pTcs->TCS_SConfig0 &= ~ALTPD;
+	pTcs->TCS_Flags	   &= ~FLAG_SYNC_DONE;
+	pTcs->TCS_Flags	   |=  FLAG_WIDE_DONE;
+
+	bus_space_write_1(iot, ioh, TUL_SCONFIG0, pTcs->TCS_SConfig0);
+	bus_space_write_1(iot, ioh, TUL_SYNCM,	  pTcs->TCS_JS_Period);
+}
+
+static void
+tul_sync_done(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	struct tcs *pTcs = sc->HCS_ActScb->SCB_Tcs;
+	int i;
+
+	if ((pTcs->TCS_Flags & FLAG_SYNC_DONE) == 0) {
+		if (sc->HCS_Msg[3] != 0) {
+			pTcs->TCS_JS_Period |= sc->HCS_Msg[3];
+
+			/* pick the highest possible rate */
+			for (i = 0; i < 8; i++)
+				if (tul_rate_tbl[i] >= sc->HCS_Msg[2])
+					break;
+
+			pTcs->TCS_JS_Period |= (i << 4);
+			pTcs->TCS_SConfig0  |= ALTPD;
+		}
+
+		pTcs->TCS_Flags |= FLAG_SYNC_DONE;
+
+		bus_space_write_1(iot, ioh, TUL_SCONFIG0, pTcs->TCS_SConfig0);
+		bus_space_write_1(iot, ioh, TUL_SYNCM,	  pTcs->TCS_JS_Period);
+	}
+}
+
+void
+tul_reset_chip(sc, iot, ioh)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	int i;
+
+	/* reset tulip chip */
+
+	bus_space_write_1(iot, ioh, TUL_SCTRL0, RSCSI);
+
+	do
+		sc->HCS_JSInt = bus_space_read_1(iot, ioh, TUL_SISTAT);
+	while((sc->HCS_JSInt & SRSTD) == 0);
+
+	tul_set_ssig(iot, ioh, 0, 0);
+
+	/*
+	 * Stall for 2 seconds, wait for target's firmware ready.
+	 */
+	for (i = 0; i < 2000; i++)
+		DELAY (1000);
+
+	bus_space_read_1(iot, ioh, TUL_SISTAT); /* Clear any active interrupt*/
+}
+
+static void
+tul_select(sc, iot, ioh, pScb, select_type)
+	struct iha_softc   *sc;
+	bus_space_tag_t	    iot;
+	bus_space_handle_t  ioh;
+	struct iha_scsi_req_q *pScb;
+	u_int8_t	select_type;
+{
+	switch (select_type) {
+	case SEL_ATN:
+		bus_space_write_1(iot, ioh, TUL_SFIFO, pScb->SCB_Ident);
+		bus_space_write_multi_1(iot, ioh, TUL_SFIFO,
+		    pScb->SCB_CDB, pScb->SCB_CDBLen);
+
+		pScb->SCB_NxtStat = 2;
+		break;
+
+	case SELATNSTOP:
+		pScb->SCB_NxtStat = 1;
+		break;
+
+	case SEL_ATN3:
+		bus_space_write_1(iot, ioh, TUL_SFIFO, pScb->SCB_Ident);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, pScb->SCB_TagMsg);
+		bus_space_write_1(iot, ioh, TUL_SFIFO, pScb->SCB_TagId);
+
+		bus_space_write_multi_1(iot, ioh, TUL_SFIFO, pScb->SCB_CDB,
+		    pScb->SCB_CDBLen);
+
+		pScb->SCB_NxtStat = 2;
+		break;
+
+	default:
+		printf("[debug] tul_select() - unknown select type = 0x%02x\n",
+		    select_type);
+		return;
+	}
+
+	tul_del_pend_scb(sc, pScb);
+	pScb->SCB_Status = STATUS_SELECT;
+
+	sc->HCS_ActScb = pScb;
+
+	bus_space_write_1(iot, ioh, TUL_SCMD, select_type);
+}
+
+/*
+ * tul_wait - wait for an interrupt to service or a SCSI bus phase change
+ *            after writing the supplied command to the tulip chip. If 
+ *            the command is NO_OP, skip the command writing.
+ */
+static int
+tul_wait(sc, iot, ioh, cmd)
+	struct iha_softc  *sc;
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   cmd;
+{
+	if (cmd != NO_OP)
+		bus_space_write_1(iot, ioh, TUL_SCMD, cmd);
+
+	/* 
+	 * Have to do this here, in addition to in iha_isr, because
+	 * interrupts might be turned off when we get here.
+	 */
+	do
+		sc->HCS_JSStatus0 = bus_space_read_1(iot, ioh, TUL_STAT0);
+	while ((sc->HCS_JSStatus0 & INTPD) == 0);
+
+	sc->HCS_JSStatus1 = bus_space_read_1(iot, ioh, TUL_STAT1);
+	sc->HCS_JSInt     = bus_space_read_1(iot, ioh, TUL_SISTAT);
+
+	sc->HCS_Phase = sc->HCS_JSStatus0 & PH_MASK;
+
+	if ((sc->HCS_JSInt & SRSTD) != 0) {
+		/* SCSI bus reset interrupt */
+		tul_reset_scsi_bus(sc);
+		return (-1);
+	}
+
+	if ((sc->HCS_JSInt & RSELED) != 0)
+		/* Reselection interrupt */
+		return (tul_resel(sc, iot, ioh));
+
+	if ((sc->HCS_JSInt & STIMEO) != 0) {
+		/* selected/reselected timeout interrupt */
+		tul_busfree(sc, iot, ioh);
+		return (-1);
+	}
+
+	if ((sc->HCS_JSInt & DISCD) != 0) {
+		/* BUS disconnection interrupt */
+		if ((sc->HCS_Flags & FLAG_EXPECT_DONE_DISC) != 0) {
+			bus_space_write_1(iot, ioh, TUL_SCTRL0,	  RSFIFO);
+			bus_space_write_1(iot, ioh, TUL_SCONFIG0,
+			    SCONFIG0DEFAULT);
+			bus_space_write_1(iot, ioh, TUL_SCTRL1,	  EHRSL);
+			tul_append_done_scb(sc, sc->HCS_ActScb, HOST_OK);
+			sc->HCS_Flags &= ~FLAG_EXPECT_DONE_DISC;
+
+		} else if ((sc->HCS_Flags & FLAG_EXPECT_DISC) != 0) {
+			bus_space_write_1(iot, ioh, TUL_SCTRL0,	  RSFIFO);
+			bus_space_write_1(iot, ioh, TUL_SCONFIG0,
+			    SCONFIG0DEFAULT);
+			bus_space_write_1(iot, ioh, TUL_SCTRL1,	  EHRSL);
+			sc->HCS_ActScb = NULL;
+			sc->HCS_Flags &= ~FLAG_EXPECT_DISC;
+
+		} else
+			tul_busfree(sc, iot, ioh);
+
+		return (-1);
+	}
+
+	return (sc->HCS_Phase);
+}
+
+/*
+ * tul_done_scb - We have a scb which has been processed by the
+ *                adaptor, now we look to see how the operation went.
+ */
+static void
+tul_done_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	struct scsi_sense_data *s1, *s2;
+	struct scsi_xfer *xs = pScb->SCB_Xs;
+
+	if (xs != NULL) {
+		xs->status = pScb->SCB_TaStat;
+
+		switch (pScb->SCB_HaStat) {
+		case HOST_OK:
+			switch (pScb->SCB_TaStat) {
+			case SCSI_OK:
+			case SCSI_CONDITION_MET:
+			case SCSI_INTERM:
+			case SCSI_INTERM_COND_MET:
+				if (((pScb->SCB_Flags & SCSI_POLL) != 0)
+				    && (pScb->SCB_CDB[0] == INQUIRY)
+				    && (pScb->SCB_Lun == 0))
+					tul_print_info(sc, pScb->SCB_Target);
+
+				xs->resid = pScb->SCB_BufLen;
+				xs->error = XS_NOERROR;
+				break;
+
+			case SCSI_RSERV_CONFLICT:
+			case SCSI_BUSY:
+			case SCSI_QUEUE_FULL:
+				xs->error = XS_BUSY;
+				break;
+
+			case SCSI_CMD_TERMINATED:
+			case SCSI_ACA_ACTIVE:
+			case SCSI_CHECK:
+				s1 = &pScb->SCB_ScsiSenseData;
+				s2 = &xs->sense;
+				*s2 = *s1;
+
+				xs->error = XS_SENSE;
+				break;
+
+			default:
+				xs->error = XS_DRIVER_STUFFUP;
+				break;
+			}
+			break;
+
+		case HOST_SEL_TOUT:
+			xs->error = XS_SELTIMEOUT;
+			break;
+
+		case HOST_SCSI_RST:
+		case HOST_DEV_RST:
+			xs->error = XS_RESET;
+			break;
+
+		case HOST_SPERR:
+			printf("%s: SCSI Parity error detected\n",
+			    sc->sc_dev.dv_xname);
+			xs->error = XS_DRIVER_STUFFUP;
+			break;
+
+		case HOST_TIMED_OUT:
+			xs->error = XS_TIMEOUT;
+			break;
+
+		case HOST_DO_DU:
+		case HOST_BAD_PHAS:
+		default:
+			xs->error = XS_DRIVER_STUFFUP;
+			break;
+		}
+
+		if (xs->datalen > 0) {
+			bus_dmamap_sync(sc->sc_dmat, pScb->SCB_Dmamap
+			    ,(xs->flags & SCSI_DATA_IN) ? 
+			    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
+			bus_dmamap_unload(sc->sc_dmat, pScb->SCB_Dmamap);
+		}
+
+		xs->flags |= ITSDONE;
+		scsi_done(xs);
+	}
+
+	if (xs->flags & SCSI_RESET)
+		printf("[debug] tul_done_scb - finished a reset request\n");
+
+	tul_append_free_scb(sc, pScb);
+}
+
+static void
+tul_timeout(arg)
+	void *arg;
+{
+	struct iha_scsi_req_q *pScb = (struct iha_scsi_req_q *)arg;
+	struct scsi_xfer *xs = pScb->SCB_Xs;
+	struct iha_softc *sc;
+
+	if (xs == NULL)
+		printf("[debug] tul_timeout called with xs == NULL\n");
+
+	else {
+		sc = xs->sc_link->adapter_softc;
+		sc_print_addr(xs->sc_link);
+		printf("SCSI OpCode 0x%02x timed out\n", xs->cmd->opcode);
+
+		tul_abort_xs(xs->sc_link->adapter_softc, xs, HOST_TIMED_OUT);
+	}
+}
+
+static void
+tul_exec_scb(sc, pScb)
+	struct iha_softc *sc;
+	struct iha_scsi_req_q *pScb;
+{
+	bus_space_handle_t ioh;
+	bus_space_tag_t iot;
+	int s;
+
+	s = splbio();
+
+	if (((pScb->SCB_Flags & SCSI_RESET) != 0)
+	    || (pScb->SCB_CDB[0] == REQUEST_SENSE))
+		tul_push_pend_scb(sc, pScb);   /* Insert SCB at head of Pend */
+	else
+		tul_append_pend_scb(sc, pScb); /* Append SCB to tail of Pend */
+
+	/*
+	 * Run through tul_main() to ensure something is active, if
+	 * only this new SCB.
+	 */
+	if (sc->HCS_Semaph != SEMAPH_IN_MAIN) {
+		iot = sc->sc_iot;
+		ioh = sc->sc_ioh;
+
+		bus_space_write_1(iot, ioh, TUL_IMSK, MASK_ALL);
+		sc->HCS_Semaph = SEMAPH_IN_MAIN;;
+
+		splx(s);
+		tul_main(sc, iot, ioh);
+		s = splbio();
+
+		sc->HCS_Semaph = ~SEMAPH_IN_MAIN;;
+		bus_space_write_1(iot, ioh, TUL_IMSK, (MASK_ALL & ~MSCMP));
+	}
+
+	splx(s);
+}
+
+
+/*
+ * tul_set_ssig - read the current scsi signal mask, then write a new
+ *		  one which turns off/on the specified signals.
+ */
+static void
+tul_set_ssig( iot, ioh, offsigs, onsigs)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   offsigs, onsigs;
+{
+	u_int8_t currsigs;
+
+	currsigs = bus_space_read_1(iot, ioh, TUL_SSIGI);
+	bus_space_write_1(iot, ioh, TUL_SSIGO, (currsigs & ~offsigs) | onsigs);
+}
+
+static void
+tul_print_info(sc, target)
+	struct iha_softc *sc;
+	int target;
+{
+	struct tcs *pTcs = &sc->HCS_Tcs[target];
+	int rate;
+
+	printf("%s: target %d ", sc->sc_dev.dv_xname, target);
+
+	if ((pTcs->TCS_JS_Period & PERIOD_WIDE_SCSI) != 0)
+		printf("using 16 bit ");
+	else
+		printf("using 8 bit ");
+
+	if ((pTcs->TCS_JS_Period & PERIOD_SYOFS) != 0) {
+		printf("synchronous transfers at ");
+		rate = (pTcs->TCS_JS_Period & PERIOD_SYXPD) >> 4;
+		if ((pTcs->TCS_SConfig0 & ALTPD) == 0)
+			rate = 100 + rate * 50;
+		else
+			rate =	50 + rate * 25;
+		rate = 1000000000 / rate;
+		printf("%d.%d MHz ",  rate / 1000000
+		    ,(rate % 1000000 + 99999) / 100000);
+	}
+	else
+		printf("asynchronous transfers ");
+
+	printf("with ");
+	if ((pTcs->TCS_SConfig0 & SPCHK) == 0)
+		printf("no ");
+	printf("parity\n");
+}
+
+
+/*
+ * tul_alloc_scbs - allocate and map the SCB's for the supplied IHA_SOFTC
+ */
+static int
+tul_alloc_scbs(sc)
+	struct iha_softc *sc;
+{
+	bus_dma_segment_t seg;
+	int error, rseg;
+
+	/*
+	 * Allocate dma-safe memory for the SCB's
+	 */
+	if ((error = bus_dmamem_alloc(sc->sc_dmat,
+		 sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB,
+		 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT))
+	    != 0) {
+		printf("%s: unable to allocate SCBs,"
+		       " error = %d\n", sc->sc_dev.dv_xname, error);
+		return (error);
+	}
+	if ((error = bus_dmamem_map(sc->sc_dmat,
+		 &seg, rseg, sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB,
+		 (caddr_t *)&sc->HCS_Scb, BUS_DMA_NOWAIT | BUS_DMA_COHERENT))
+	    != 0) {
+		printf("%s: unable to map SCBs, error = %d\n",
+		       sc->sc_dev.dv_xname, error);
+		return (error);
+	}
+
+	/*
+	 * Create and load the DMA map used for the SCBs
+	 */
+	if ((error = bus_dmamap_create(sc->sc_dmat,
+		 sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB,
+		 1, sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB,
+		 0, BUS_DMA_NOWAIT, &sc->sc_dmamap))
+	    != 0) {
+		printf("%s: unable to create control DMA map, error = %d\n",
+		       sc->sc_dev.dv_xname, error);
+		return (error);
+	}
+	if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap,
+		 sc->HCS_Scb, sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB,
+		 NULL, BUS_DMA_NOWAIT))
+	    != 0) {
+		printf("%s: unable to load control DMA map, error = %d\n",
+		       sc->sc_dev.dv_xname, error);
+		return (error);
+	}
+
+	bzero(sc->HCS_Scb, sizeof(struct iha_scsi_req_q)*IHA_MAX_SCB);
+
+	return (0);
+}
+
+/*
+ * tul_read_eeprom - read Serial EEPROM value & set to defaults
+ *		     if required. XXX - Writing does NOT work!
+ */
+void
+tul_read_eeprom(iot, ioh)
+	bus_space_tag_t iot;
+	bus_space_handle_t ioh;
+{
+	u_int8_t gctrl;
+
+	/*------Enable EEProm programming ---*/
+	gctrl = bus_space_read_1(iot, ioh, TUL_GCTRL0) | EEPRG;
+	bus_space_write_1(iot, ioh, TUL_GCTRL0, gctrl);
+
+	/*------ Program default pattern ----*/
+	if (tul_se2_rd_all(iot, ioh) == 0) {
+		tul_se2_update_all(iot, ioh);
+		if(tul_se2_rd_all(iot, ioh) == 0)
+			panic("could not program iha Tulip EEPROM\n");
+	}
+
+	/*------ Disable EEProm programming ---*/
+	gctrl = bus_space_read_1(iot, ioh, TUL_GCTRL0) & ~EEPRG;
+	bus_space_write_1(iot, ioh, TUL_GCTRL0, gctrl);
+}
+
+/*
+ * tul_se2_update_all - Update SCSI H/A configuration parameters from
+ *			serial EEPROM Setup default pattern. Only
+ *			change those values different from the values
+ *			in tul_nvram.
+ */
+void
+tul_se2_update_all(iot, ioh)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	u_int16_t *np, *np1;
+	u_int32_t chksum;
+	u_int8_t i;
+
+	/* Enable erase/write state of EEPROM */
+	tul_se2_instr(iot, ioh, ENABLE_ERASE);
+	bus_space_write_1(iot, ioh, TUL_NVRAM, 0);
+	DELAY(5);
+
+	np  = (u_int16_t *)tul_dftNvRam;
+	np1 = (u_int16_t *)&tul_nvram;
+
+	for (i = 0, chksum = 0; i < 31; i++, np++, np1++) {
+		if (*np != *np1)
+			tul_se2_wr(iot, ioh, i, *np);
+		chksum += *np;
+	}
+
+	chksum &= 0x0000ffff;
+	tul_se2_wr(iot, ioh, 31, chksum);
+
+	/* Disable erase/write state of EEPROM */
+	tul_se2_instr(iot, ioh, 0);
+	bus_space_write_1(iot, ioh, TUL_NVRAM, 0);
+	DELAY(5);
+}
+
+/*
+ * tul_se2_wr - write the given 16 bit value into the Serial EEPROM
+ *		at the specified offset
+ */
+void
+tul_se2_wr(iot, ioh, addr, writeWord)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   addr;
+	u_int16_t	   writeWord;
+{
+	u_int8_t bit;
+	int i;
+
+	/* send 'WRITE' Instruction == address | WRITE bit */
+	tul_se2_instr(iot, ioh, (addr | WRITE));
+
+	for (i = 15; i >= 0; i--, writeWord <<= 1) {
+		if (writeWord & 0x8000)
+			bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS | NVRDO);
+		else
+			bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+		DELAY(5);
+		bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS | NVRCK);
+		DELAY(5);
+	}
+
+	bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+	DELAY(5);
+	bus_space_write_1(iot, ioh, TUL_NVRAM, 0);
+	DELAY(5);
+	bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+	DELAY(5);
+
+	for (;;) {
+		bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS | NVRCK);
+		DELAY(5);
+		bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+		DELAY(5);
+		bit = bus_space_read_1(iot, ioh, TUL_NVRAM) & NVRDI;
+		DELAY(5);
+		if (bit != 0)
+			break; /* write complete */
+	}
+
+	bus_space_write_1(iot, ioh, TUL_NVRAM, 0);
+	DELAY(5);
+}
+
+/*
+ * tul_se2_rd - read & return the 16 bit value at the specified
+ *		offset in the Serial E2PROM
+ *
+ */
+u_int16_t
+tul_se2_rd(iot, ioh, addr)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   addr;
+{
+	u_int16_t readWord;
+	u_int8_t bit;
+	int i;
+
+	/* Send 'READ' instruction == address | READ bit */
+	tul_se2_instr(iot, ioh, (addr | READ));
+
+	readWord = 0;
+	for (i = 15; i >= 0; i--) {
+		bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS | NVRCK);
+		DELAY(5);
+
+		bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+		DELAY(5);
+
+		/* sample data after the following edge of clock     */
+		bit = bus_space_read_1(iot, ioh, TUL_NVRAM) & NVRDI;
+		DELAY(5);
+
+		readWord += bit << i;
+	}
+
+	bus_space_write_1(iot, ioh, TUL_NVRAM, 0);
+	DELAY(5);
+
+	return (readWord);
+}
+
+/*
+ * tul_se2_rd_all - Read SCSI H/A config parameters from serial EEPROM
+ *		    into tul_nvram static variable.
+ */
+int
+tul_se2_rd_all(iot, ioh)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+{
+	u_int16_t *np, *np1;
+	u_int32_t chksum;
+	u_int8_t i;
+
+	np = (u_int16_t *)&tul_nvram;
+	np1 = (u_int16_t *)&tul_dftNvRam;
+
+	for (i = 0, chksum = 0; i < 31; i++, np++, np1++) {
+		*np = tul_se2_rd(iot, ioh, i);
+		chksum += *np;
+	}
+	*np = tul_se2_rd(iot, ioh, 31); /* just read checksum		    */
+
+	chksum &= 0x0000ffff;		/* checksum is lower 16 bits of sum */
+
+	return (tul_nvram.NVM_Signature == SIGNATURE)
+	       &&
+	       (tul_nvram.NVM_CheckSum	== chksum);
+}
+
+/*
+ * tul_se2_instr - write an octet to serial E2PROM one bit at a time
+ */
+void
+tul_se2_instr(iot, ioh, instr)
+	bus_space_tag_t	   iot;
+	bus_space_handle_t ioh;
+	u_int8_t	   instr;
+{
+	u_int8_t b;
+	int i;
+
+	b = NVRCS | NVRDO; /* Write the start bit (== 1) */
+
+	bus_space_write_1(iot, ioh, TUL_NVRAM, b);
+	DELAY(5);
+	bus_space_write_1(iot, ioh, TUL_NVRAM, b | NVRCK);
+	DELAY(5);
+
+	for (i = 0; i < 8; i++, instr <<= 1) {
+		if (instr & 0x80)
+			b = NVRCS | NVRDO; /* Write a 1 bit */
+		else
+			b = NVRCS;	   /* Write a 0 bit */
+
+		bus_space_write_1(iot, ioh, TUL_NVRAM, b);
+		DELAY(5);
+		bus_space_write_1(iot, ioh, TUL_NVRAM, b | NVRCK);
+		DELAY(5);
+	}
+
+	bus_space_write_1(iot, ioh, TUL_NVRAM, NVRCS);
+	DELAY(5);
+
+	return;
+}
+
+/*
+ * tul_reset_tcs - reset the target control structure pointed
+ *		   to by pTcs to default values. TCS_Flags
+ *		   only has the negotiation done bits reset as
+ *		   the other bits are fixed at initialization.
+ */
+void
+tul_reset_tcs(pTcs, config0)
+	struct tcs *pTcs;
+	u_int8_t config0;
+{
+	pTcs->TCS_Flags	    &= ~(FLAG_SYNC_DONE | FLAG_WIDE_DONE);
+	pTcs->TCS_JS_Period  = 0;
+	pTcs->TCS_SConfig0   = config0;
+	pTcs->TCS_TagCnt     = 0;
+	pTcs->TCS_NonTagScb  = NULL;
+}
diff --git a/sys/dev/ic/iha.h b/sys/dev/ic/iha.h
new file mode 100644
index 00000000000..6ba6fe18761
--- /dev/null
+++ b/sys/dev/ic/iha.h
@@ -0,0 +1,495 @@
+/*	$OpenBSD: iha.h,v 1.1 2001/01/23 04:19:42 krw Exp $ */
+/*
+ * Initio INI-9xxxU/UW SCSI Device Driver
+ *
+ * Copyright (c) 2000 Ken Westerback
+ * 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,
+ *    without modification, immediately at the beginning of the file.
+ * 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 OR HIS RELATIVES 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 MIND, 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.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Ported from i91uscsi.h, provided by Initio Corporation, which probably
+ * came from the same people who provided i91u.c:
+ *
+ * Device driver for the INI-9XXXU/UW or INIC-940/950  PCI SCSI Controller.
+ *
+ * FreeBSD
+ *
+ *  Written for 386bsd and FreeBSD by
+ *	Winston Hung		<winstonh@initio.com>
+ *
+ * Copyright (c) 1997-99 Initio Corp.  All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#define IHA_MAX_SG_ENTRIES	33
+#define IHA_MAX_TARGETS		16
+#define IHA_MAX_SCB		32
+#define IHA_MAX_EXTENDED_MSG	 4 /* SDTR(3) and WDTR(4) only */
+
+#define OFFSETOF(type, member)	((size_t)(&((type *)0)->member))
+
+#define SCSI_CONDITION_MET    0x04 /* SCSI Status codes not defined */
+#define SCSI_INTERM_COND_MET  0x14 /*     in scsi_all.h             */
+#define SCSI_RSERV_CONFLICT   0x18
+#define SCSI_CMD_TERMINATED   0x22
+#define SCSI_ACA_ACTIVE	      0x30
+
+/*
+ *   Scatter-Gather Element Structure
+ */
+struct iha_sg_element {
+	u_int32_t SG_Ptr;  /* Data Pointer */
+	u_int32_t SG_Len;  /* Data Length  */
+};
+
+/*
+ * iha_scsi_req_q - SCSI Request structure used by the
+ *		    Tulip (aka inic-950). Note that 32
+ *		    bit pointers and ints are assumed!
+ */
+
+struct iha_scsi_req_q {
+	TAILQ_ENTRY(iha_scsi_req_q) SCB_ScbList;
+
+	int	  SCB_Status;		   /* Current status of the SCB	     */
+#define		      STATUS_QUEUED   0	   /*	   SCB one of Free/Done/Pend */
+#define		      STATUS_RENT     1	   /*	   SCB allocated, not queued */
+#define		      STATUS_SELECT   2	   /*	   SCB being selected	     */
+#define		      STATUS_BUSY     3	   /*	   SCB I/O is active	     */
+	u_int8_t  SCB_NxtStat;		   /* Next state function to apply   */
+	u_int16_t SCB_SGIdx;		   /* Scatter/Gather Index	     */
+	u_int16_t SCB_SGMax;		   /* Scatter/Gather # valid entries */
+	int	  SCB_Flags;		   /* SCB Flags (xs->flags + private)*/
+#define		      FLAG_RSENS      0x00010000 /*	 Request Sense sent  */
+#define		      FLAG_SG	      0x00020000 /*      Scatter/Gather used */
+#define		      FLAG_DIR	      (SCSI_DATA_IN | SCSI_DATA_OUT)
+	u_int8_t  SCB_Target;		   /* Target Id			     */
+	u_int8_t  SCB_Lun;		   /* Lun			     */
+	u_int32_t SCB_BufPAddr;		   /* Data Buffer Physical Addr	     */
+	u_int32_t SCB_BufLen;		   /* Data Allocation Length	     */
+	u_int8_t  SCB_HaStat;		   /* Status of Host Adapter	     */
+#define		      HOST_OK	      0x00 /*	   OK - operation a success  */
+#define		      HOST_TIMED_OUT  0x01 /*      Request timed out         */
+#define		      HOST_SPERR      0x10 /*	   SCSI parity error	     */
+#define		      HOST_SEL_TOUT   0x11 /*	   Selection Timeout	     */
+#define		      HOST_DO_DU      0x12 /*	   Data Over/Underrun	     */
+#define		      HOST_BAD_PHAS   0x14 /*	   Unexpected SCSI bus phase */
+#define		      HOST_SCSI_RST   0x1B /*	   SCSI bus was reset	     */
+#define		      HOST_DEV_RST    0x1C /*	   Device was reset	     */
+	u_int8_t  SCB_TaStat;		   /* SCSI Status Byte		     */
+	u_int8_t  SCB_SGLen;		   /* # of valid entries in SGList   */
+	u_int8_t  SCB_SenseLen;		   /* Sense Data Allocation Length   */
+	u_int8_t  SCB_CDBLen;		   /* CDB Length		     */
+	u_int8_t  SCB_Ident;		   /* Identity			     */
+#define		      IDENT_IDENTITY  0x80 /*	   Must ALWAYS be set	     */
+#define		      IDENT_DISC_PRIV 0x40 /*	   Disconnect allowed	     */
+#define		      IDENT_LUN	      0x3f /*	   Target LUN		     */
+	u_int8_t  SCB_TagMsg;		   /* Tag Message		     */
+	u_int8_t  SCB_TagId;		   /* Queue Tag			     */
+	u_int8_t  SCB_CDB[12];		   /* SCSI Command		     */
+	u_int32_t SCB_SGPAddr;		   /* SGList Physical Address	     */
+	u_int32_t SCB_SensePAddr;	   /* Sense Data PhysicalAddress     */
+
+	struct scsi_xfer *SCB_Xs;	   /* xs this SCB is executing	     */
+
+					   /* Start of SG list		     */
+	struct iha_sg_element SCB_SGList[IHA_MAX_SG_ENTRIES];
+
+	struct scsi_sense_data	SCB_ScsiSenseData;
+	bus_dmamap_t		SCB_Dmamap;/* maps xs->buf xfer buffer	     */
+	int			SCB_Timeout; /* in milliseconds              */
+	struct tcs	       *SCB_Tcs;   /* tcs for SCB_Target	     */
+};
+
+/*
+ *   Target Device Control Structure
+ */
+struct tcs {
+	u_int16_t TCS_Flags;
+#define		      FLAG_SCSI_RATE	 0x0007 /* Index into tul_rate_tbl[] */
+#define		      FLAG_EN_DISC	 0x0008 /* Enable disconnect	     */
+#define		      FLAG_NO_SYNC	 0x0010 /* No sync data transfer     */
+#define		      FLAG_NO_WIDE	 0x0020 /* No wide data transfer     */
+#define		      FLAG_1GIGA	 0x0040 /* 255 hd/63 sec (64/32)     */
+#define		      FLAG_SPINUP	 0x0080 /* Start disk drive	     */
+#define		      FLAG_WIDE_DONE	 0x0100 /* WDTR msg has been sent    */
+#define		      FLAG_SYNC_DONE	 0x0200 /* SDTR msg has been sent    */
+#define		      FLAG_NO_NEG_SYNC   (FLAG_NO_SYNC | FLAG_SYNC_DONE)
+#define		      FLAG_NO_NEG_WIDE   (FLAG_NO_WIDE | FLAG_WIDE_DONE)
+#define		      FLAG_NO_NEGOTIATE	 (FLAG_NO_NEG_SYNC | FLAG_NO_NEG_WIDE)
+	u_int8_t  TCS_JS_Period;
+#define		      PERIOD_WIDE_SCSI	 0x80	/* Enable Wide SCSI	     */
+#define		      PERIOD_SYXPD	 0x70	/* Synch. SCSI Xfer rate     */
+#define		      PERIOD_SYOFS	 0x0f	/* Synch. SCSI Offset	     */
+	u_int8_t  TCS_SConfig0;
+	u_int8_t  TCS_TagCnt;
+
+	struct iha_scsi_req_q  *TCS_NonTagScb;
+};
+
+struct iha_softc {
+	struct device	     sc_dev;
+
+	bus_space_tag_t	     sc_iot;
+	bus_space_handle_t   sc_ioh;
+
+	bus_dma_tag_t	     sc_dmat;
+	bus_dmamap_t	     sc_dmamap;
+
+	struct	scsi_link    sc_link;
+	struct	scsi_adapter sc_adapter;
+
+	void		    *sc_ih;
+
+	/*
+	 *   Initio specific fields
+	 */
+	u_int8_t  HCS_Flags;
+#define		      FLAG_EXPECT_DISC	     0x01
+#define		      FLAG_EXPECT_SELECT     0x02
+#define		      FLAG_EXPECT_RESET	     0x10
+#define		      FLAG_EXPECT_DONE_DISC  0x20
+	u_int8_t  HCS_Semaph;
+#define		      SEMAPH_IN_MAIN	     0x00   /* Already in tulip_main */
+	u_int8_t  HCS_Phase;			    /* MSG  C/D	 I/O	     */
+#define		      PHASE_DATA_OUT	     0x00   /*	0    0	  0	     */
+#define		      PHASE_DATA_IN	     0x01   /*	0    0	  1	     */
+#define		      PHASE_CMD_OUT	     0x02   /*	0    1	  0	     */
+#define		      PHASE_STATUS_IN	     0x03   /*	0    1	  1	     */
+#define		      PHASE_MSG_OUT	     0x06   /*	1    1	  0	     */
+#define		      PHASE_MSG_IN	     0x07   /*	1    1	  1	     */
+	u_int8_t  HCS_JSInt;
+	u_int8_t  HCS_JSStatus0;
+	u_int8_t  HCS_JSStatus1;
+	u_int8_t  HCS_SConf1;
+	u_int8_t  HCS_Msg[IHA_MAX_EXTENDED_MSG];    /* [0] len, [1] Msg Code */
+#define		      MSG_LEN_SYNC_XFER	     0x03
+#define		      MSG_CODE_SYNC_XFER     0x01
+#define		      MSG_LEN_WIDE_XFER	     0x02
+#define		      MSG_CODE_WIDE_XFER     0x03
+
+	struct iha_scsi_req_q *HCS_Scb;		    /* SCB array	     */
+	struct iha_scsi_req_q *HCS_ActScb;	    /* SCB using SCSI bus    */
+
+	TAILQ_HEAD(, iha_scsi_req_q) HCS_FreeScb, HCS_PendScb, HCS_DoneScb;
+
+	struct tcs HCS_Tcs[IHA_MAX_TARGETS];
+};
+
+/*
+ *   EEPROM for one SCSI Channel
+ *
+ */
+struct nvram_scsi {
+	u_int8_t  NVM_SCSI_Id;	    /* 0x00 Channel Adapter SCSI Id          */
+	u_int8_t  NVM_SCSI_Cfg;	    /* 0x01 Channel configuration            */
+#define		      CFG_SCSI_RESET 0x0001 /*     Reset bus at power up     */
+#define		      CFG_EN_PAR     0x0002 /*     SCSI parity enable        */
+#define		      CFG_ACT_TERM1  0x0004 /*     Enable active term 1      */
+#define		      CFG_ACT_TERM2  0x0008 /*     Enable active term 2      */
+#define		      CFG_AUTO_TERM  0x0010 /*     Enable auto terminator    */
+#define		      CFG_EN_PWR     0x0080 /*     Enable power mgmt         */
+#define		      CFG_DEFAULT (CFG_SCSI_RESET | CFG_AUTO_TERM | CFG_EN_PAR)
+	u_int8_t  NVM_SCSI_CfgByte2;        /* 0x02 Unused Channel Cfg byte 2*/
+	u_int8_t  NVM_SCSI_Targets;	    /* 0x03 Number of SCSI targets   */
+					    /* 0x04 Lower bytes of targ flags*/
+	u_int8_t  NVM_SCSI_TargetFlags[IHA_MAX_TARGETS];
+#define		      FLAG_DEFAULT   (FLAG_NO_WIDE | FLAG_1GIGA | FLAG_EN_DISC)
+};
+
+/*
+ * Tulip (aka ini-950) Serial EEPROM Layout
+ *
+ */
+struct nvram {
+	/* ---------- Header ------------------------------------------------*/
+	u_int16_t  NVM_Signature;	       /* 0x00 NVRAM Signature	     */
+#define		       SIGNATURE	0xC925
+	u_int8_t   NVM_Size;		       /* 0x02 Size of data structure*/
+	u_int8_t   NVM_Revision;	       /* 0x03 Rev. of data structure*/
+
+	/* ---------- Host Adapter Structure --------------------------------*/
+	u_int8_t   NVM_ModelByte0;	       /* 0x04 Model number (byte 0) */
+	u_int8_t   NVM_ModelByte1;	       /* 0x05 Model number (byte 1) */
+	u_int8_t   NVM_ModelInfo;	       /* 0x06 Model information     */
+	u_int8_t   NVM_NumOfCh;		       /* 0x07 Number of SCSI channel*/
+	u_int8_t   NVM_BIOSConfig1;	       /* 0x08 BIOS configuration 1  */
+#define		       BIOSCFG_ENABLE	  0x01 /*      BIOS enable	     */
+#define		       BIOSCFG_8DRIVE	  0x02 /*      Support > 2 drives    */
+#define		       BIOSCFG_REMOVABLE  0x04 /*      Support removable drv */
+#define		       BIOSCFG_INT19	  0x08 /*      Intercept int 19h     */
+#define		       BIOSCFG_BIOSSCAN	  0x10 /*      Dynamic BIOS scan     */
+#define		       BIOSCFG_LUNSUPPORT 0x40 /*      Support LUN	     */
+#define		       BIOSCFG_DEFAULT	  (BIOSCFG_ENABLE)
+	u_int8_t   NVM_BIOSConfig2;	       /* 0x09 BIOS configuration 2  */
+	u_int8_t   NVM_HAConfig1;	       /* 0x0a Host adapter config 1 */
+#define		       HACFG_BOOTIDMASK	  0x0F /*      Boot ID number	     */
+#define		       HACFG_LUNMASK	  0x70 /*      Boot LUN number	     */
+#define		       HACFG_CHANMASK	  0x80 /*      Boot Channel number   */
+	u_int8_t   NVM_HAConfig2;	       /* 0x0b Host adapter config 2 */
+	struct nvram_scsi NVM_Scsi[2];         /* 0x0c		             */
+	u_int8_t   NVM_Reserved[10];	       /* 0x34			     */
+
+	/* --------- CheckSum -----------------------------------------------*/
+	u_int16_t  NVM_CheckSum;	       /* 0x3E Checksum of NVRam     */
+};
+
+/*
+ *  Tulip (aka inic-950) PCI Configuration Space Initio Specific Registers
+ *
+ *  Offsets 0x00 through 0x3f are the standard PCI Configuration Header
+ *  registers.
+ *
+ *  Offsets 0x40 through 0x4f, 0x51, 0x53, 0x57, 0x5b, 0x5e and 0x5f are
+ *  reserved registers.
+ *
+ *  Registers 0x50 and 0x52 always read as 0.
+ *
+ *  The register offset names and associated bit field names are taken
+ *  from the Init-950 Data Sheet, Version 2.1, March 1997
+ */
+#define TUL_GCTRL0	0x54	       /* R/W Global Control 0		     */
+#define	    EEPRG	    0x04       /*     Enable EEPROM Programming	     */
+#define TUL_GCTRL1	0x55	       /* R/W Global Control 1		     */
+#define	    ATDEN	    0x01       /*     Auto Termination Detect Enable */
+#define TUL_GSTAT	0x56	       /* R/W Global Status - connector type */
+#define TUL_EPAD0	0x58	       /* R/W External EEPROM Addr (lo byte) */
+#define TUL_EPAD1	0x59	       /* R/W External EEPROM Addr (hi byte) */
+#define TUL_PNVPG	0x5A	       /* R/W Data port to external BIOS     */
+#define TUL_EPDATA	0x5C	       /* R/W EEPROM Data port		     */
+#define TUL_NVRAM	0x5D	       /* R/W Non-volatile RAM port	     */
+#define     READ	    0x80       /*     Read from given NVRAM addr     */
+#define     WRITE           0x40       /*     Write to given NVRAM addr	     */
+#define     ENABLE_ERASE    0x30       /*     Enable NVRAM Erase/Write       */
+#define	    NVRCS	    0x08       /*     Select external NVRAM	     */
+#define	    NVRCK	    0x04       /*     NVRAM Clock		     */
+#define	    NVRDO	    0x02       /*     NVRAM Write Data		     */
+#define	    NVRDI	    0x01       /*     NVRAM Read  Data		     */
+
+/*
+ *   Tulip (aka inic-950) SCSI Registers
+ */
+#define TUL_STCNT0	0x80	       /* R/W 24 bit SCSI Xfer Count	     */
+#define	    TCNT	    0x00ffffff /*     SCSI Xfer Transfer Count	     */
+#define TUL_SFIFOCNT	0x83	       /* R/W  5 bit FIFO counter	     */
+#define	    FIFOC	    0x1f       /*     SCSI Offset Fifo Count	     */
+#define TUL_SISTAT	0x84	       /* R   Interrupt Register	     */
+#define	    RSELED	    0x80       /*     Reselected		     */
+#define	    STIMEO	    0x40       /*     Selected/Reselected Timeout    */
+#define	    SBSRV	    0x20       /*     SCSI Bus Service		     */
+#define	    SRSTD	    0x10       /*     SCSI Reset Detected	     */
+#define	    DISCD	    0x08       /*     Disconnected Status	     */
+#define	    SELED	    0x04       /*     Select Interrupt		     */
+#define	    SCAMSCT	    0x02       /*     SCAM selected		     */
+#define	    SCMDN	    0x01       /*     Command Complete		     */
+#define TUL_SIEN	0x84	       /* W   Interrupt enable		     */
+#define	    ALL_INTERRUPTS  0xff
+#define TUL_STAT0	0x85	       /* R   Status 0			     */
+#define	    INTPD	    0x80       /*     Interrupt pending		     */
+#define	    SQACT	    0x40       /*     Sequencer active		     */
+#define	    XFCZ	    0x20       /*     Xfer counter zero		     */
+#define	    SFEMP	    0x10       /*     FIFO empty		     */
+#define	    SPERR	    0x08       /*     SCSI parity error		     */
+#define	    PH_MASK	    0x07       /*     SCSI phase mask		     */
+#define TUL_SCTRL0	0x85	       /* W   Control 0			     */
+#define	    RSSQC	    0x20       /*     Reset sequence counter	     */
+#define	    RSFIFO	    0x10       /*     Flush FIFO		     */
+#define	    CMDAB	    0x04       /*     Abort command (sequence)	     */
+#define	    RSMOD	    0x02       /*     Reset SCSI Chip		     */
+#define	    RSCSI	    0x01       /*     Reset SCSI Bus		     */
+#define TUL_STAT1	0x86	       /* R   Status 1			     */
+#define	    STRCV	    0x80       /*     Status received		     */
+#define	    MSGST	    0x40       /*     Message sent		     */
+#define	    CPDNE	    0x20       /*     Data phase done		     */
+#define	    DPHDN	    0x10       /*     Data phase done		     */
+#define	    STSNT	    0x08       /*     Status sent		     */
+#define	    SXCMP	    0x04       /*     Xfer completed		     */
+#define	    SLCMP	    0x02       /*     Selection completed	     */
+#define	    ARBCMP	    0x01       /*     Arbitration completed	     */
+#define TUL_SCTRL1	0x86	       /* W   Control 1			     */
+#define	    ENSCAM	    0x80       /*     Enable SCAM		     */
+#define	    NIDARB	    0x40       /*     No ID for Arbitration	     */
+#define	    ENLRS	    0x20       /*     Low Level Reselect	     */
+#define	    PWDN	    0x10       /*     Power down mode		     */
+#define	    WCPU	    0x08       /*     Wide CPU			     */
+#define	    EHRSL	    0x04       /*     Enable HW reselect	     */
+#define	    ESBUSOUT	    0x02       /*     Enable SCSI data bus out latch */
+#define	    ESBUSIN	    0x01       /*     Enable SCSI data bus in latch  */
+#define TUL_SSTATUS2	0x87	       /* R   Status 2			     */
+#define	    SABRT	    0x80       /*     Command aborted		     */
+#define	    OSCZ	    0x40       /*     Offset counter zero	     */
+#define	    SFFUL	    0x20       /*     FIFO full			     */
+#define	    TMCZ	    0x10       /*     Timeout counter zero	     */
+#define	    BSYGN	    0x08       /*     Busy release		     */
+#define	    PHMIS	    0x04       /*     Phase mismatch		     */
+#define	    SBEN	    0x02       /*     SCSI data bus enable	     */
+#define	    SRST	    0x01       /*     SCSI bus reset in progress     */
+#define TUL_SCONFIG0	0x87	       /* W   Configuration		     */
+#define	    PHLAT	    0x80       /*     Enable phase latch	     */
+#define	    ITMOD	    0x40       /*     Initiator mode		     */
+#define	    SPCHK	    0x20       /*     Enable SCSI parity	     */
+#define	    ADMA8	    0x10       /*     Alternate dma 8-bits mode	     */
+#define	    ADMAW	    0x08       /*     Alternate dma 16-bits mode     */
+#define	    EDACK	    0x04       /*     Enable DACK in wide SCSI xfer  */
+#define	    ALTPD	    0x02       /*     Alternate sync period mode     */
+#define	    DSRST	    0x01       /*     Disable SCSI Reset signal	     */
+#define	    SCONFIG0DEFAULT (PHLAT | ITMOD | ALTPD | DSRST)
+#define TUL_SOFSC	0x88	       /* R   Offset			     */
+#define TUL_SYNCM	0x88	       /* W   Sync. Xfer Period & Offset     */
+#define TUL_SBID	0x89	       /* R   SCSI BUS ID		     */
+#define TUL_SID		0x89	       /* W   SCSI ID			     */
+#define TUL_SALVC	0x8A	       /* R   FIFO Avail Cnt/Identify Msg    */
+#define TUL_STIMO	0x8A	       /* W   Sel/Resel Time Out Register    */
+#define TUL_SDATI	0x8B	       /* R   SCSI Bus contents		     */
+#define TUL_SDAT0	0x8B	       /* W   SCSI Data Out		     */
+#define TUL_SFIFO	0x8C	       /* R/W FIFO			     */
+#define	    MSG_COMP	    0x00       /*     Command Complete		     */
+#define	    MSG_EXTEND	    0x01       /*     Extended Message		     */
+#define	    MSG_SDP	    0x02       /*     Save Data Pointer		     */
+#define	    MSG_RESTORE	    0x03       /*     Restore Pointers		     */
+#define	    MSG_DISC	    0x04       /*     Disconnect		     */
+#define	    MSG_IDE	    0x05       /*     Initiator Detected Error	     */
+#define	    MSG_ABORT	    0x06       /*     Abort			     */
+#define	    MSG_REJ	    0x07       /*     Message Reject		     */
+#define	    MSG_NOP	    0x08       /*     No Operation		     */
+#define	    MSG_PARITY	    0x09       /*     Message Parity Error	     */
+#define	    MSG_LINK_COMP   0x0A       /*     Linked Command Complete	     */
+#define	    MSG_LINK_FLAG   0x0B       /*     Linked Command Complete w Flag */
+#define	    MSG_DEVRST	    0x0C       /*     Bus Device Reset		     */
+#define	    MSG_ABORT_TAG   0x0D       /*     Abort Tag			     */
+#define	    MSG_CLEAR_QUEUE 0x0E       /*     Clear Queue		     */
+#define	    MSG_INIT_RCVRY  0x0F       /*     Initiate Recovery		     */
+#define	    MSG_RLSE_RCVRY  0x10       /*     Release Recovery		     */
+#define	    MSG_TERM_IO	    0x11       /*     Terminate I/O Process	     */
+#define	    MSG_CONT_IO	    0x12       /*     Continue	I/O		     */
+#define	    MSG_TARG_XF_DIS 0x13       /*     Target Transfer Disable	     */
+				       /*     0x14 -> 0x15 are reserved	     */
+#define	    MSG_CLEAR_ACA   0x16       /*     Clear Auto Contingent Active   */
+				       /*     0x17 -> 0x1f are reserved	     */
+#define	    MSG_STAG	    0x20       /*     Simple Queue Tag		     */
+#define	    MSG_HTAG	    0x21       /*     Head of Queue Tag		     */
+#define	    MSG_OTAG	    0x22       /*     Ordered Queue Tag		     */
+#define	    MSG_IGNOREWIDE  0x23       /*     Ignore Wide Residue	     */
+				       /*     0x24 -> 0x7f are reserved	     */
+				       /*     0x80 -> 0xff are identify msgs */
+#define TUL_SSIGI	0x90	       /* R   SCSI signal in		     */
+#define	    REQ		    0x80       /*     REQ signal		     */
+#define	    ACK		    0x40       /*     ACK signal		     */
+#define	    BSY		    0x20       /*     BSY signal		     */
+#define	    SEL		    0x10       /*     SEL signal		     */
+#define	    ATN		    0x08       /*     ATN signal		     */
+#define	    MSG		    0x04       /*     MSG signal		     */
+#define	    CD		    0x02       /*     C/D signal		     */
+#define	    IO		    0x01       /*     I/O signal		     */
+#define TUL_SSIGO	0x90	       /* W   SCSI signal out		     */
+#define TUL_SCMD	0x91	       /* R/W SCSI Command		     */
+#define	    NO_OP	    0x00       /*     Place Holder for tulip_wait()  */
+#define	    SEL_NOATN	    0x01       /*     Select w/o ATN Sequence	     */
+#define	    XF_FIFO_OUT	    0x03       /*     FIFO Xfer Infomation out	     */
+#define	    MSG_ACCEPT	    0x0F       /*     Message Accept		     */
+#define	    SEL_ATN	    0x11       /*     Select w ATN Sequence	     */
+#define	    SEL_ATNSTOP	    0x12       /*     Select w ATN & Stop Sequence   */
+#define	    SELATNSTOP	    0x1E       /*     Select w ATN & Stop Sequence   */
+#define	    SEL_ATN3	    0x31       /*     Select w ATN3 Sequence	     */
+#define	    XF_DMA_OUT	    0x43       /*     DMA Xfer Infomation out	     */
+#define	    EN_RESEL	    0x80       /*     Enable Reselection	     */
+#define	    XF_FIFO_IN	    0x83       /*     FIFO Xfer Infomation in	     */
+#define	    CMD_COMP	    0x84       /*     Command Complete Sequence	     */
+#define	    XF_DMA_IN	    0xC3       /*     DMA Xfer Infomation in	     */
+#define TUL_STEST0	0x92	       /* R/W Test0			     */
+#define TUL_STEST1	0x93	       /* R/W Test1			     */
+
+/*
+ *   Tulip (aka inic-950) DMA Registers
+ */
+#define TUL_DXPA	0xC0	       /* R/W DMA      Xfer Physcl Addr	 0-31*/
+#define TUL_DXPAE	0xC4	       /* R/W DMA      Xfer Physcl Addr 32-63*/
+#define TUL_DCXA	0xC8	       /* R   DMA Curr Xfer Physcl Addr	 0-31*/
+#define TUL_DCXAE	0xCC	       /* R   DMA Curr Xfer Physcl Addr 32-63*/
+#define TUL_DXC		0xD0	       /* R/W DMA Xfer Counter		     */
+#define TUL_DCXC	0xD4	       /* R   DMA Current Xfer Counter	     */
+#define TUL_DCMD	0xD8	       /* R/W DMA Command Register	     */
+#define	    SGXFR	    0x80       /*     Scatter/Gather Xfer	     */
+#define	    RSVD	    0x40       /*     Reserved - always reads as 0   */
+#define	    XDIR	    0x20       /*     Xfer Direction 0/1 = out/in    */
+#define	    BMTST	    0x10       /*     Bus Master Test		     */
+#define	    CLFIFO	    0x08       /*     Clear FIFO		     */
+#define	    ABTXFR	    0x04       /*     Abort Xfer		     */
+#define	    FRXFR	    0x02       /*     Force Xfer		     */
+#define	    STRXFR	    0x01       /*     Start Xfer		     */
+#define	    ST_X_IN	    (XDIR | STRXFR)
+#define	    ST_X_OUT	    (	    STRXFR)
+#define	    ST_SG_IN	    (SGXFR | ST_X_IN)
+#define	    ST_SG_OUT	    (SGXFR | ST_X_OUT)
+#define TUL_ISTUS0	0xDC	       /* R/W Interrupt Status Register	     */
+#define	    DGINT	    0x80       /*     DMA Global Interrupt	     */
+#define	    RSVRD0	    0x40       /*     Reserved			     */
+#define	    RSVRD1	    0x20       /*     Reserved			     */
+#define	    SCMP	    0x10       /*     SCSI Complete		     */
+#define	    PXERR	    0x08       /*     PCI Xfer Error		     */
+#define	    DABT	    0x04       /*     DMA Xfer Aborted		     */
+#define	    FXCMP	    0x02       /*     Forced Xfer Complete	     */
+#define	    XCMP	    0x01       /*     Bus Master Xfer Complete	     */
+#define TUL_ISTUS1	0xDD	       /* R   DMA status Register	     */
+#define	    SCBSY	    0x08       /*     SCSI Busy			     */
+#define	    FFULL	    0x04       /*     FIFO Full			     */
+#define	    FEMPT	    0x02       /*     FIFO Empty		     */
+#define	    XPEND	    0x01       /*     Xfer pending		     */
+#define TUL_IMSK	0xE0	       /* R/W Interrupt Mask Register	     */
+#define	    MSCMP	    0x10       /*     Mask SCSI Complete	     */
+#define	    MPXFER	    0x08       /*     Mask PCI Xfer Error	     */
+#define	    MDABT	    0x04       /*     Mask Bus Master Abort	     */
+#define	    MFCMP	    0x02       /*     Mask Force Xfer Complete	     */
+#define	    MXCMP	    0x01       /*     Mask Bus Master Xfer Complete  */
+#define	    MASK_ALL	    (MXCMP | MFCMP | MDABT | MPXFER | MSCMP)
+#define TUL_DCTRL0	0xE4	       /* R/W DMA Control Register	     */
+#define	    SXSTP	    0x80       /*     SCSI Xfer Stop		     */
+#define	    RPMOD	    0x40       /*     Reset PCI Module		     */
+#define	    RSVRD2	    0x20       /*     SCSI Xfer Stop		     */
+#define	    PWDWN	    0x10       /*     Power Down		     */
+#define	    ENTM	    0x08       /*     Enable SCSI Terminator Low     */
+#define	    ENTMW	    0x04       /*     Enable SCSI Terminator High    */
+#define	    DISAFC	    0x02       /*     Disable Auto Clear	     */
+#define	    LEDCTL	    0x01       /*     LED Control		     */
+#define TUL_DCTRL1	0xE5	       /* R/W DMA Control Register 1	     */
+#define	    SDWS	    0x01       /*     SCSI DMA Wait State	     */
+#define TUL_DFIFO	0xE8	       /* R/W DMA FIFO			     */
+
+#define TUL_WCTRL	0xF7	       /* ?/? Bus master wait state control  */
+#define TUL_DCTRL	0xFB	       /* ?/? DMA delay control		     */
+
+/* Functions used by higher SCSI layers, the kernel, or iha.c and iha_pci.c  */
+
+int  iha_scsi_cmd   __P((struct scsi_xfer *));
+int  iha_intr	    __P((void *));
+void iha_minphys    __P((struct buf *));
+int  iha_init_tulip __P((struct iha_softc *));
+
+
+
+
+
+
+
diff --git a/sys/dev/pci/files.pci b/sys/dev/pci/files.pci
index ea40d9b9230..7b630a71b71 100644
--- a/sys/dev/pci/files.pci
+++ b/sys/dev/pci/files.pci
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.pci,v 1.90 2001/01/13 19:53:50 aaron Exp $
+#	$OpenBSD: files.pci,v 1.91 2001/01/23 04:19:42 krw Exp $
 #	$NetBSD: files.pci,v 1.20 1996/09/24 17:47:15 christos Exp $
 #
 # Config file and device description for machine-independent PCI code.
@@ -321,3 +321,7 @@ file	dev/pci/if_an_pci.c		an_pci
 device	cmpci: audio, auconv, mulaw
 attach	cmpci at pci
 file	dev/pci/cmpci.c			cmpci
+
+# Initio ULTRA WIDE/ULTRA2 WIDE SCSI Controllers
+attach	iha at pci with iha_pci
+file	dev/pci/iha_pci.c		iha_pci
diff --git a/sys/dev/pci/iha_pci.c b/sys/dev/pci/iha_pci.c
new file mode 100644
index 00000000000..98365e6d306
--- /dev/null
+++ b/sys/dev/pci/iha_pci.c
@@ -0,0 +1,138 @@
+/*	$OpenBSD: iha_pci.c,v 1.1 2001/01/23 04:19:42 krw Exp $ */
+/*
+ * Initio INI-9xxxU/UW SCSI Device Driver
+ *
+ * Copyright (c) 2000 Ken Westerback
+ * 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,
+ *    without modification, immediately at the beginning of the file.
+ * 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 OR HIS RELATIVES 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 MIND, 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.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Ported from i91u.c, provided by Initio Corporation, which credits:
+ *
+ * Device driver for the INI-9XXXU/UW or INIC-940/950  PCI SCSI Controller.
+ *
+ * FreeBSD
+ *
+ *  Written for 386bsd and FreeBSD by
+ *	Winston Hung		<winstonh@initio.com>
+ *
+ * Copyright (c) 1997-99 Initio Corp.  All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <dev/pci/pcidevs.h>
+#include <dev/pci/pcivar.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+
+#include <dev/ic/iha.h>
+
+static int  iha_pci_probe  __P((struct device *, void *, void *));
+static void iha_pci_attach __P((struct device *, struct device *, void *));
+
+struct cfattach iha_pci_ca = {
+	sizeof(struct iha_softc), iha_pci_probe, iha_pci_attach
+};
+
+static int
+iha_pci_probe(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+
+	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INITIO)
+		switch (PCI_PRODUCT(pa->pa_id)) {
+		case PCI_PRODUCT_INITIO_INIC950:
+			return (1);
+	}
+
+	return (0);
+}
+
+static void
+iha_pci_attach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+	bus_space_handle_t ioh;
+	pci_intr_handle_t ih;
+	struct iha_softc *sc = (void *)self;
+	bus_space_tag_t iot;
+	const char *intrstr;
+	pcireg_t command;
+	int ioh_valid;
+				
+	command  = pci_conf_read(pa->pa_pc,pa->pa_tag,PCI_COMMAND_STATUS_REG);
+	command |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_PARITY_ENABLE;
+
+	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
+
+	/*
+	 * XXX - Tried memory mapping (using code from adw and ahc)
+	 *	 rather that IO mapping, but it didn't work at all..
+	 */
+	ioh_valid = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
+	    &iot, &ioh, NULL, NULL);
+
+	if (ioh_valid != 0) {
+		printf("%s: unable to map registers\n", sc->sc_dev.dv_xname);
+		return;
+	}
+
+	sc->sc_iot  = iot;
+	sc->sc_ioh  = ioh;
+	sc->sc_dmat = pa->pa_dmat;
+	
+	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
+			 pa->pa_intrline, &ih)) {
+		printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
+		return;
+	}
+	intrstr = pci_intr_string(pa->pa_pc, ih);
+
+	sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, iha_intr, sc,
+				       sc->sc_dev.dv_xname);
+
+	if (sc->sc_ih == NULL) {
+		printf(": couldn't establish interrupt");
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		printf("\n");
+	} else {
+		if (intrstr != NULL)
+			printf(": %s\n", intrstr);
+
+		if (iha_init_tulip(sc) == 0)
+			config_found(&sc->sc_dev, &sc->sc_link, scsiprint);
+	}
+}