454 lines
10 KiB
C
454 lines
10 KiB
C
/* $NecBSD: bsif.c,v 1.6 1997/10/31 17:43:40 honda Exp $ */
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/*
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* Copyright (c) HONDA Naofumi, KATO Takenori, 1996. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#if 0
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/* WARNING: Any bug report must contain BS_REL_VERSION */
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#define BS_REL_VERSION "NetBSD1.2/030" /* major jump */
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#endif
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#ifdef __NetBSD__
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#include <i386/Cbus/dev/bs/bsif.h>
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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#include "opt_bs.h"
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#include "opt_pc98.h"
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#include "bs.h"
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#include <i386/isa/bs/bsif.h>
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#include <sys/bus.h>
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#endif /* __FreeBSD__ */
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_debug.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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/**************************************************
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* DEVICE DECLARE
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**************************************************/
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#ifdef __NetBSD__
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static void bs_scsi_minphys __P((struct buf *));
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struct cfdriver bs_cd = {
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NULL, "bs", DV_DULL
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};
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struct scsi_device bs_dev = {
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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};
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struct scsi_adapter pc98texa55bs = {
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bs_scsi_cmd,
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bs_scsi_minphys,
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bs_target_open,
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0,
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};
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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static int bsprobe __P((struct isa_device *));
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static void bs_poll(struct cam_sim *sim);
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static int bsattach(struct isa_device *);
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static ointhand2_t bsintr;
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static int bs_dmarangecheck __P((caddr_t, unsigned));
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struct isa_driver bsdriver = {
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INTR_TYPE_CAM,
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bsprobe,
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bsattach,
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"bs"
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};
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COMPAT_ISA_DRIVER(bs, bsdriver);
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#if 0
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struct scsi_device bs_dev = {
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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"bs",
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0, {0, 0}
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};
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#endif
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u_int32_t
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bs_adapter_info(unit)
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int unit;
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{
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return (1);
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}
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#if 0
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static struct scsi_adapter pc98texa55bs = {
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bs_scsi_cmd,
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bs_scsi_minphys,
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bs_target_open,
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0,
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bs_adapter_info,
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"bs", {0, 0}
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};
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#endif
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static u_short pc98_irq_ball[16] = {
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IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7,
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IRQ8, IRQ9, IRQ10, IRQ11, IRQ12, IRQ13, IRQ14, IRQ15
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};
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static struct bs_softc *bscdata[NBS];
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#endif /* __FreeBSD__ */
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/*****************************************************************
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* OS <=> BS INTERFACE
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*****************************************************************/
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#ifdef __FreeBSD__
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static int
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bsprobe(dev)
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struct isa_device *dev;
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{
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struct bs_softc *bsc;
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int unit = dev->id_unit;
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u_int irq, drq;
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int i, rv = 0;
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if (unit >= NBS) {
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printf("bs%d: unit number too high\n", unit);
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return rv;
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}
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/*
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* Allocate a storage for us
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*/
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if (bscdata[unit]) {
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printf("bs%d: memory already allocated\n", unit);
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return rv;
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}
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if (!(bsc = malloc(sizeof(struct bs_softc), M_TEMP, M_NOWAIT | M_ZERO)))
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{
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printf("bs%d cannot malloc!\n", unit);
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return rv;
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}
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callout_handle_init(&bsc->timeout_ch);
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bscdata[unit] = bsc;
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bsc->unit = unit;
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bsc->sc_cfgflags = DVCFG_MINOR(dev->id_flags);
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bsc->sc_hw = DVCFG_HW(&bshw_hwsel, DVCFG_MAJOR(dev->id_flags));
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if (bsc->sc_hw == NULL)
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return rv;
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if ((bsc->sc_hw->hw_flags & BSHW_SMFIFO) &&
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(dev->id_maddr != (caddr_t)MADDRUNK))
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bsc->sm_offset = (u_long) dev->id_maddr;
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else
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bsc->sm_offset = (u_long) 0;
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snprintf(bsc->sc_dvname, sizeof(bsc->sc_dvname), "bs%d", unit);
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if (dev->id_iobase == 0)
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{
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printf("%s: iobase not specified. Assume default port(0x%x)\n",
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bsc->sc_dvname, BSHW_DEFAULT_PORT);
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dev->id_iobase = BSHW_DEFAULT_PORT;
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}
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bsc->sc_iobase = dev->id_iobase;
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irq = IRQUNK;
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drq = DRQUNK;
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if (bshw_board_probe(bsc, &drq, &irq))
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goto bad;
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dev->id_irq = pc98_irq_ball[irq];
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dev->id_drq = (short)drq;
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/* initialize host queue and target info */
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bs_hostque_init(bsc);
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for (i = 0; i < NTARGETS; i++)
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if (i != bsc->sc_hostid)
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bs_init_target_info(bsc, i);
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/* initialize ccb queue */
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bs_init_ccbque(BS_MAX_CCB);
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/* scsi bus reset and restart */
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bsc->sc_hstate = BSC_BOOTUP;
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bsc->sc_retry = RETRIES;
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bsc->sc_wc = delaycount * 250; /* about 1 sec */
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bs_reset_nexus(bsc);
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return BSHW_IOSZ;
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bad:
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return rv;
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}
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#endif /* __FreeBSD__ */
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#ifdef __NetBSD__
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int
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bsprint(aux, name)
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void *aux;
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const char *name;
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{
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if (name != NULL)
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printf("%s: scsibus ", name);
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return UNCONF;
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}
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#endif
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#ifdef __FreeBSD__
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static void
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bs_poll(struct cam_sim *sim)
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{
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bs_sequencer(cam_sim_softc(sim));
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}
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static int
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bsattach(dev)
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struct isa_device *dev;
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{
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int unit = dev->id_unit;
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struct bs_softc *bsc = bscdata[unit];
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struct cam_devq *devq;
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dev->id_ointr = bsintr;
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/*
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* CAM support HN2 MAX_START, MAX_TAGS xxxx
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*/
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devq = cam_simq_alloc(256/*MAX_START*/);
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if (devq == NULL)
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return 0;
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bsc->sim = cam_sim_alloc(bs_scsi_cmd, bs_poll, "bs",
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bsc, unit, 1, 32/*MAX_TAGS*/, devq);
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if (bsc->sim == NULL) {
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cam_simq_free(devq);
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return 0;
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}
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if (xpt_bus_register(bsc->sim, 0) != CAM_SUCCESS) {
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free(bsc->sim, M_DEVBUF);
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return 0;
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}
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if (xpt_create_path(&bsc->path, /*periph*/NULL,
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cam_sim_path(bsc->sim), CAM_TARGET_WILDCARD,
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CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
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xpt_bus_deregister(cam_sim_path(bsc->sim));
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cam_sim_free(bsc->sim, /*free_simq*/TRUE);
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free(bsc->sim, M_DEVBUF);
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return 0;
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}
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bs_start_timeout(bsc);
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return 1;
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}
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#endif /* __FreeBSD__ */
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#ifdef __NetBSD__
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int
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bsintr(arg)
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void *arg;
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{
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return bs_sequencer((struct bs_softc *)arg);
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}
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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static void
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bsintr(unit)
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int unit;
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{
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(void)bs_sequencer(bscdata[unit]);
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}
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#endif /* __FreeBSD__ */
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/*****************************************************************
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* JULIAN SCSI <=> BS INTERFACE
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*****************************************************************/
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#ifndef __FreeBSD__
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static void
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bs_scsi_minphys(bp)
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struct buf *bp;
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{
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if (bp->b_bcount > BSDMABUFSIZ)
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bp->b_bcount = BSDMABUFSIZ;
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minphys(bp);
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}
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#endif
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#if 0
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XSBS_INT32T
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bs_target_open(sc, cf)
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struct scsi_link *sc;
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struct cfdata *cf;
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{
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u_int target = sc->target;
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struct bs_softc *bsc = (struct bs_softc *) (sc->adapter_softc);
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struct targ_info *ti = bsc->sc_ti[target];
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u_int flags;
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if ((bsc->sc_openf & (1 << target)) == 0)
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return ENODEV;
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if ((flags = cf->cf_flags) == 0)
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flags = BS_SCSI_DEFCFG;
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bs_setup_ctrl(ti, (u_int)sc->quirks, flags);
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return 0;
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}
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#endif
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/*****************************************************************
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* BS MEMORY ALLOCATION INTERFACE
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*****************************************************************/
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#ifdef __NetBSD__
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void
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bs_alloc_buf(ti)
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struct targ_info *ti;
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{
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struct bs_softc *bsc = ti->ti_bsc;
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caddr_t addr, physaddr;
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bus_dma_segment_t seg;
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int rseg, error;
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u_int pages;
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extern int cold;
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/* XXX:
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* strategy change!
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* A) total memory >= 16M at boot: MAXBSIZE * 7 = 112k.
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* B) others: 4K * 7 = 28 K.
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*/
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if (get_sysinfo(SYSINFO_MEMLEVEL) == MEM_LEVEL1 && cold != 0)
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pages = 4;
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else
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pages = 1;
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ti->bounce_size = NBPG * pages;
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addr = NULL;
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error = bus_dmamem_alloc(bsc->sc_dmat, ti->bounce_size, NBPG, 0,
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&seg, 1, &rseg, BUS_DMA_NOWAIT);
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if (rseg == 1 && error == 0)
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error = bus_dmamem_map(bsc->sc_dmat, &seg, rseg,
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ti->bounce_size, &addr, BUS_DMA_NOWAIT);
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if (rseg != 1 || error != 0)
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{
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ti->bounce_size = NBPG;
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if ((addr = malloc(NBPG, M_DEVBUF, M_NOWAIT)) == NULL)
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goto bad;
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}
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physaddr = (caddr_t) vtophys(addr);
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if ((u_int) physaddr >= RAM_END)
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{
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/* XXX: mem from malloc only! */
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free(addr, M_DEVBUF);
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goto bad;
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}
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ti->bounce_addr = (u_int8_t *) addr;
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ti->bounce_phys = (u_int8_t *) physaddr;
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return;
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bad:
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bs_printf(ti, "bs_alloc_buf", "no phys bounce buffer");
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printf("WARNING: this target is dislocated\n");
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}
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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static int bs_dmarangecheck(caddr_t va, unsigned length)
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{
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vm_offset_t phys, priorpage = 0, endva;
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endva = (vm_offset_t)round_page((unsigned long)(va+length));
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for (; va < (caddr_t)endva; va += PAGE_SIZE) {
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phys = trunc_page(pmap_extract(pmap_kernel(), (vm_offset_t)va));
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if (phys == 0)
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panic("bs_dmarangecheck: no physical page present");
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if (phys >= RAM_END)
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return 1;
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if (priorpage) {
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if (priorpage + PAGE_SIZE != phys)
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return 1;
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}
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priorpage = phys;
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}
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return 0;
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}
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void
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bs_alloc_buf(ti)
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struct targ_info *ti;
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{
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caddr_t addr, physaddr;
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#if BS_BOUNCE_SIZE != 0
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ti->bounce_size = BS_BOUNCE_SIZE;
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#else
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ti->bounce_size = BSHW_NBPG;
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#endif
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/* Try malloc() first. It works better if it works. */
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addr = malloc(ti->bounce_size, M_DEVBUF, M_NOWAIT);
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if (addr != NULL) {
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if (bs_dmarangecheck(addr, ti->bounce_size) == 0) {
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physaddr = (caddr_t) vtophys(addr);
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ti->bounce_addr = (u_int8_t *) addr;
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ti->bounce_phys = (u_int8_t *) physaddr;
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return;
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}
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free(addr, M_DEVBUF);
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}
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addr = contigmalloc(ti->bounce_size, M_DEVBUF, M_NOWAIT,
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0ul, RAM_END, 1ul, 0x10000ul);
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if (addr == NULL)
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goto bad;
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physaddr = (caddr_t) vtophys(addr);
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if ((u_int) physaddr >= RAM_END)
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{
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/* XXX:
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* must free memory !
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*/
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goto bad;
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}
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ti->bounce_addr = (u_int8_t *) addr;
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ti->bounce_phys = (u_int8_t *) physaddr;
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return;
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bad:
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bs_printf(ti, "bs_alloc_buf", "no phys bounce buffer");
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printf("WARNING: this target is dislocated\n");
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}
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#endif /* __FreeBSD__ */
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