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NetBSD/sys/dev/ic/osiop.c
tsutsui 613923b42e Add a MI driver for the Symbios/NCR 53c710 SCSI controller. 
This is based on amiga's siop driver, but converted to use
bus_space(9) functions and modified to fit bus_dma(9) framework.

Currently tested on NetBSD/arc with jazzio 53c710 SCSI,
which really requires bus_dma(9) functions :-)
Sync transfers and disconnect/reconnect are also working.

TODO:
- Test under more heavy load
- Clean up osiop_checkintr() hander
- Reorganize command queue and sync negotiation handling more suitable
  for thorpej-scsipi mid-layer
- Re-think defered interrupt handling for amiga
2001-04-30 04:47:50 +00:00

1978 lines
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/* $NetBSD: osiop.c,v 1.1 2001/04/30 04:47:50 tsutsui Exp $ */
/*
* Copyright (c) 2001 Izumi Tsutsui. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1994 Michael L. Hitch
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)siop.c 7.5 (Berkeley) 5/4/91
*/
/*
* MI NCR53C710 scsi adaptor driver; based on arch/amiga/dev/siop.c:
* NetBSD: siop.c,v 1.43 1999/09/30 22:59:53 thorpej Exp
*
* bus_space/bus_dma'fied by Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
*
* The 53c710 datasheet is avaliable at:
* http://www.lsilogic.com/techlib/techdocs/storage_stand_prod/index.html
*/
/* #define OSIOP_DEBUG */
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <uvm/uvm_extern.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/scsipi/scsi_message.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <dev/ic/osiopreg.h>
#include <dev/ic/osiopvar.h>
/* 53C710 script */
#include <dev/microcode/siop/osiop.out>
void osiop_attach(struct osiop_softc *);
void osiop_minphys(struct buf *);
void osiop_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t,
void *);
void osiop_poll(struct osiop_softc *, struct osiop_acb *);
void osiop_sched(struct osiop_softc *);
void osiop_scsidone(struct osiop_acb *, int);
void osiop_abort(struct osiop_softc *, const char *);
void osiop_init(struct osiop_softc *);
void osiop_reset(struct osiop_softc *);
void osiop_resetbus(struct osiop_softc *);
void osiop_start(struct osiop_softc *);
int osiop_checkintr(struct osiop_softc *, u_int8_t, u_int8_t, u_int8_t, int *);
void osiop_select(struct osiop_softc *);
void scsi_period_to_osiop(struct osiop_softc *, int);
void osiop_timeout(void *);
int osiop_reset_delay = 250; /* delay after reset, in milleseconds */
#ifdef OSIOP_DEBUG_SYNC
/*
* sync period transfer lookup - only valid for 66MHz clock
*/
static struct {
u_int8_t p; /* period from sync request message */
u_int8_t r; /* siop_period << 4 | sbcl */
} sync_tab[] = {
{ 60/4, 0<<4 | 1},
{ 76/4, 1<<4 | 1},
{ 92/4, 2<<4 | 1},
{ 92/4, 0<<4 | 2},
{108/4, 3<<4 | 1},
{116/4, 1<<4 | 2},
{120/4, 4<<4 | 1},
{120/4, 0<<4 | 3},
{136/4, 5<<4 | 1},
{140/4, 2<<4 | 2},
{152/4, 6<<4 | 1},
{152/4, 1<<4 | 3},
{164/4, 3<<4 | 2},
{168/4, 7<<4 | 1},
{180/4, 2<<4 | 3},
{184/4, 4<<4 | 2},
{208/4, 5<<4 | 2},
{212/4, 3<<4 | 3},
{232/4, 6<<4 | 2},
{240/4, 4<<4 | 3},
{256/4, 7<<4 | 2},
{272/4, 5<<4 | 3},
{300/4, 6<<4 | 3},
{332/4, 7<<4 | 3}
};
#endif
#ifdef OSIOP_DEBUG
#define DEBUG_DMA 0x01
#define DEBUG_INT 0x02
#define DEBUG_PHASE 0x04
#define DEBUG_UNEXCEPT 0x08
#define DEBUG_DISC 0x10
#define DEBUG_CMD 0x20
#define DEBUG_ALL 0xff
int osiop_debug = 0; /*DEBUG_ALL;*/
int osiopsync_debug = 0;
int osiopdma_hits = 1;
int osiopstarts = 0;
int osiopints = 0;
int osiopphmm = 0;
int osiop_trix = 0;
#define OSIOP_TRACE_SIZE 128
#define OSIOP_TRACE(a,b,c,d) do { \
osiop_trbuf[osiop_trix + 0] = (a); \
osiop_trbuf[osiop_trix + 1] = (b); \
osiop_trbuf[osiop_trix + 2] = (c); \
osiop_trbuf[osiop_trix + 3] = (d); \
osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \
} while (0)
u_int8_t osiop_trbuf[OSIOP_TRACE_SIZE];
void osiop_dump_trace(void);
void osiop_dump_acb(struct osiop_acb *);
void osiop_dump(struct osiop_softc *);
#else
#define OSIOP_TRACE(a,b,c,d)
#endif
void
osiop_attach(sc)
struct osiop_softc *sc;
{
struct osiop_acb *acb;
bus_dma_segment_t seg;
int nseg;
int i, err;
/*
* Allocate and map DMA-safe memory for the script.
*/
err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0,
&seg, 1, &nseg, BUS_DMA_NOWAIT);
if (err) {
printf(": failed to allocate script memory, err=%d\n", err);
return;
}
err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE,
(caddr_t *)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
if (err) {
printf(": failed to map script memory, err=%d\n", err);
return;
}
err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0,
BUS_DMA_NOWAIT, &sc->sc_scrdma);
if (err) {
printf(": failed to create script map, err=%d\n", err);
return;
}
err = bus_dmamap_load(sc->sc_dmat, sc->sc_scrdma,
sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT);
if (err) {
printf(": failed to load script map, err=%d\n", err);
return;
}
/*
* Copy and sync script
*/
memcpy(sc->sc_script, osiop_script, sizeof(osiop_script));
bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script),
BUS_DMASYNC_PREWRITE);
/*
* Allocate and map DMA-safe memory for the script data structure.
*/
err = bus_dmamem_alloc(sc->sc_dmat,
sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0,
&seg, 1, &nseg, BUS_DMA_NOWAIT);
if (err) {
printf(": failed to allocate ds memory, err=%d\n", err);
return;
}
err = bus_dmamem_map(sc->sc_dmat, &seg, nseg,
sizeof(struct osiop_ds) * OSIOP_NACB, (caddr_t *)&sc->sc_ds,
BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
if (err) {
printf(": failed to map ds memory, err=%d\n", err);
return;
}
err = bus_dmamap_create(sc->sc_dmat,
sizeof(struct osiop_ds) * OSIOP_NACB, 1,
sizeof(struct osiop_ds) * OSIOP_NACB, 0,
BUS_DMA_NOWAIT, &sc->sc_dsdma);
if (err) {
printf(": failed to create ds map, err=%d\n", err);
return;
}
err = bus_dmamap_load(sc->sc_dmat, sc->sc_dsdma, sc->sc_ds,
sizeof(struct osiop_ds) * OSIOP_NACB, NULL, BUS_DMA_NOWAIT);
if (err) {
printf(": failed to load ds map, err=%d\n", err);
return;
}
acb = malloc(sizeof(struct osiop_acb) * OSIOP_NACB, M_DEVBUF, M_NOWAIT);
if (acb == NULL) {
printf(": can't allocate memory for acb\n");
return;
}
memset(acb, 0, sizeof(struct osiop_acb) * OSIOP_NACB);
sc->sc_acb = acb;
sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags;
sc->sc_nexus = NULL;
sc->sc_active = 0;
memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo));
/* Initialize command block queue */
TAILQ_INIT(&sc->ready_list);
TAILQ_INIT(&sc->nexus_list);
TAILQ_INIT(&sc->free_list);
/* Initialize each command block */
for (i = 0; i < OSIOP_NACB; i++) {
bus_addr_t dsa;
/* XXX How much size is required for each command block? */
err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE,
0, BUS_DMA_NOWAIT, &acb->cmddma);
if (err) {
printf(": failed to create cmddma map, err=%d\n", err);
return;
}
err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG,
OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma);
if (err) {
printf(": failed to create datadma map, err=%d\n",
err);
return;
}
acb->sc = sc;
acb->ds = &sc->sc_ds[i];
acb->dsoffset = sizeof(struct osiop_ds) * i;
dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset;
acb->ds->id.addr = dsa + OSIOP_DSIDOFF;
acb->ds->status.count = 1;
acb->ds->status.addr = dsa + OSIOP_DSSTATOFF;
acb->ds->msg.count = 1;
acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF;
acb->ds->msgin.count = 1;
acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF;
acb->ds->extmsg.count = 1;
acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF;
acb->ds->synmsg.count = 3;
acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF;
TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
acb++;
}
printf(": NCR53C710 rev %d, SCSI ID %d\n",
osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_id);
/*
* Initialize all
*/
osiop_init(sc);
/*
* Fill in the adapter.
*/
sc->sc_adapter.adapt_dev = &sc->sc_dev;
sc->sc_adapter.adapt_nchannels = 1;
sc->sc_adapter.adapt_openings = OSIOP_NACB;
sc->sc_adapter.adapt_max_periph = 1;
sc->sc_adapter.adapt_ioctl = NULL;
sc->sc_adapter.adapt_minphys = osiop_minphys;
sc->sc_adapter.adapt_request = osiop_scsipi_request;
/*
* Fill in the channel.
*/
sc->sc_channel.chan_adapter = &sc->sc_adapter;
sc->sc_channel.chan_bustype = &scsi_bustype;
sc->sc_channel.chan_channel = 0;
sc->sc_channel.chan_ntargets = OSIOP_NTGT;
sc->sc_channel.chan_nluns = 8;
sc->sc_channel.chan_id = sc->sc_id;
/*
* Now try to attach all the sub devices.
*/
config_found(&sc->sc_dev, &sc->sc_channel, scsiprint);
}
/*
* default minphys routine for osiop based controllers
*/
void
osiop_minphys(bp)
struct buf *bp;
{
if (bp->b_bcount > OSIOP_MAX_XFER)
bp->b_bcount = OSIOP_MAX_XFER;
minphys(bp);
}
/*
* used by specific osiop controller
*
*/
void
osiop_scsipi_request(chan, req, arg)
struct scsipi_channel *chan;
scsipi_adapter_req_t req;
void *arg;
{
struct scsipi_xfer *xs;
struct scsipi_periph *periph;
struct osiop_acb *acb;
struct osiop_softc *sc;
int err, flags, s;
sc = (struct osiop_softc *)chan->chan_adapter->adapt_dev;
switch (req) {
case ADAPTER_REQ_RUN_XFER:
xs = arg;
periph = xs->xs_periph;
flags = xs->xs_control;
/* XXXX ?? */
if (flags & XS_CTL_DATA_UIO)
panic("osiop: scsi data uio requested");
/* XXXX ?? */
if (sc->sc_nexus && flags & XS_CTL_POLL)
#if 0
panic("osiop_scsicmd: busy");
#else
printf("osiop_scsicmd: busy\n");
#endif
s = splbio();
acb = TAILQ_FIRST(&sc->free_list);
if (acb != NULL) {
TAILQ_REMOVE(&sc->free_list, acb, chain);
}
#ifdef DIAGNOSTIC
else {
scsipi_printaddr(periph);
printf("unable to allocate acb\n");
panic("osiop_scsipi_request");
}
#endif
acb->status = ACB_S_READY;
acb->xs = xs;
/* Setup DMA map for SCSI command buffer */
err = bus_dmamap_load(sc->sc_dmat, acb->cmddma,
xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT);
if (err) {
printf("%s: unable to load cmd DMA map: %d",
sc->sc_dev.dv_xname, err);
xs->error = XS_DRIVER_STUFFUP;
TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
scsipi_done(xs);
splx(s);
return;
}
/* Setup DMA map for data buffer */
if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
err = bus_dmamap_load(sc->sc_dmat, acb->datadma,
xs->data, xs->datalen, NULL,
BUS_DMA_NOWAIT | BUS_DMA_STREAMING);
if (err) {
printf("%s: unable to load data DMA map: %d",
sc->sc_dev.dv_xname, err);
xs->error = XS_DRIVER_STUFFUP;
scsipi_done(xs);
bus_dmamap_unload(sc->sc_dmat, acb->cmddma);
TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
splx(s);
return;
}
bus_dmamap_sync(sc->sc_dmat, acb->datadma,
0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN) ?
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
}
bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, xs->cmdlen,
BUS_DMASYNC_PREWRITE);
acb->cmdlen = xs->cmdlen;
acb->datalen = xs->datalen;
#ifdef OSIOP_DEBUG
acb->data = xs->data;
#endif
TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain);
if (sc->sc_nexus == NULL)
osiop_sched(sc);
splx(s);
if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA)
osiop_poll(sc, acb);
return;
case ADAPTER_REQ_GROW_RESOURCES:
return;
case ADAPTER_REQ_SET_XFER_MODE:
return;
}
}
void
osiop_poll(sc, acb)
struct osiop_softc *sc;
struct osiop_acb *acb;
{
struct scsipi_xfer *xs = acb->xs;
int status, i, s, to;
u_int8_t istat, dstat, sstat0;
s = splbio();
to = xs->timeout / 1000;
if (!TAILQ_EMPTY(&sc->nexus_list))
printf("%s: osiop_poll called with disconnected device\n",
sc->sc_dev.dv_xname);
for (;;) {
i = 1000;
while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) &
(OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) {
if (i <= 0) {
#ifdef OSIOP_DEBUG
printf("waiting: tgt %d cmd %02x sbcl %02x"
" dsp %x (+%lx) dcmd %x"
" ds %p timeout %d\n",
xs->xs_periph->periph_target,
xs->cmd->opcode,
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_4(sc, OSIOP_DSP),
osiop_read_4(sc, OSIOP_DSP) -
sc->sc_scrdma->dm_segs[0].ds_addr,
osiop_read_1(sc, OSIOP_DCMD),
acb->ds, acb->xs->timeout);
#endif
i = 1000;
to--;
if (to <= 0) {
osiop_reset(sc);
splx(s);
return;
}
}
delay(1000);
i--;
}
sstat0 = osiop_read_1(sc, OSIOP_SSTAT0);
dstat = osiop_read_1(sc, OSIOP_DSTAT);
if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) {
if (acb != sc->sc_nexus)
printf("%s: osiop_poll disconnected device"
" completed\n", sc->sc_dev.dv_xname);
else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) {
sc->sc_flags &= ~OSIOP_INTSOFF;
osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien);
osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien);
}
osiop_scsidone(sc->sc_nexus, status);
}
if (xs->xs_status & XS_STS_DONE)
break;
}
splx(s);
return;
}
/*
* start next command that's ready
*/
void
osiop_sched(sc)
struct osiop_softc *sc;
{
struct scsipi_periph *periph;
struct osiop_acb *acb;
int i;
#ifdef OSIOP_DEBUG
if (sc->sc_nexus != NULL) {
printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n",
sc->sc_dev.dv_xname, sc->sc_nexus,
sc->sc_nexus->xs->xs_periph->periph_target,
sc->ready_list.tqh_first,
sc->ready_list.tqh_first->xs->xs_periph->periph_target);
return;
}
#endif
TAILQ_FOREACH(acb, &sc->ready_list, chain) {
periph = acb->xs->xs_periph;
i = periph->periph_target;
if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) {
struct osiop_tinfo *ti;
TAILQ_REMOVE(&sc->ready_list, acb, chain);
sc->sc_nexus = acb;
ti = &sc->sc_tinfo[i];
ti->lubusy |= (1 << periph->periph_lun);
break;
}
}
if (acb == NULL) {
#ifdef OSIOP_DEBUG
printf("%s: osiop_sched didn't find ready command\n",
sc->sc_dev.dv_xname);
#endif
return;
}
if (acb->xs->xs_control & XS_CTL_RESET)
osiop_reset(sc);
sc->sc_active++;
osiop_select(sc);
}
void
osiop_scsidone(acb, status)
struct osiop_acb *acb;
int status;
{
struct scsipi_xfer *xs;
struct scsipi_periph *periph;
struct osiop_softc *sc;
int dosched = 0;
#ifdef DIAGNOSTIC
if (acb == NULL || acb->xs == NULL) {
printf("%s: NULL acb or scsipi_xfer in osiop_scsidone\n",
sc->sc_dev.dv_xname);
#if defined(OSIOP_DEBUG) && defined(DDB)
Debugger();
#endif
return;
}
#endif
xs = acb->xs;
sc = acb->sc;
periph = xs->xs_periph;
#ifdef OSIOP_DEBUG
if (acb->status != ACB_S_DONE)
printf("%s: acb not done (status %d)\n",
sc->sc_dev.dv_xname, acb->status);
#endif
xs->status = status;
switch (status) {
case SCSI_OK:
xs->error = XS_NOERROR;
break;
case SCSI_BUSY:
xs->error = XS_BUSY;
break;
case SCSI_CHECK:
xs->error = XS_BUSY;
break;
case SCSI_OSIOP_NOCHECK:
/*
* don't check status, xs->error is already valid
*/
break;
case SCSI_OSIOP_NOSTATUS:
/*
* the status byte was not updated, cmd was
* aborted
*/
xs->error = XS_SELTIMEOUT;
break;
default:
#ifdef OSIOP_DEBUG
printf("%s: osiop_scsidone: unknown status code (0x%02x)\n",
sc->sc_dev.dv_xname, status);
#endif
xs->error = XS_DRIVER_STUFFUP;
break;
}
if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen,
(xs->xs_control & XS_CTL_DATA_IN) ?
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, acb->datadma);
}
bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, acb->cmdlen,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, acb->cmddma);
/*
* Remove the ACB from whatever queue it's on. We have to do a bit of
* a hack to figure out which queue it's on. Note that it is *not*
* necessary to cdr down the ready queue, but we must cdr down the
* nexus queue and see if it's there, so we can mark the unit as no
* longer busy. This code is sickening, but it works.
*/
if (acb == sc->sc_nexus) {
sc->sc_nexus = NULL;
sc->sc_tinfo[periph->periph_target].lubusy &=
~(1 << periph->periph_lun);
if (!TAILQ_EMPTY(&sc->ready_list))
dosched = 1; /* start next command */
sc->sc_active--;
OSIOP_TRACE('d', 'a', status, 0);
} else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) {
TAILQ_REMOVE(&sc->ready_list, acb, chain);
OSIOP_TRACE('d', 'r', status, 0);
} else {
struct osiop_acb *acb2;
TAILQ_FOREACH(acb2, &sc->nexus_list, chain) {
if (acb2 == acb) {
TAILQ_REMOVE(&sc->nexus_list, acb, chain);
sc->sc_tinfo[periph->periph_target].lubusy &=
~(1 << periph->periph_lun);
sc->sc_active--;
break;
}
}
if (acb2 == NULL) {
if (acb->chain.tqe_next != NULL) {
TAILQ_REMOVE(&sc->ready_list, acb, chain);
sc->sc_active--;
} else {
printf("%s: can't find matching acb\n",
sc->sc_dev.dv_xname);
#ifdef DDB
#if 0
Debugger();
#endif
#endif
}
}
OSIOP_TRACE('d', 'n', status, 0);
}
/* Put it on the free list. */
acb->status = ACB_S_FREE;
TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
sc->sc_tinfo[periph->periph_target].cmds++;
callout_stop(&xs->xs_callout);
xs->resid = 0;
if ((xs->xs_control & XS_CTL_POLL) == 0)
scsipi_done(xs);
if (dosched && sc->sc_nexus == NULL)
osiop_sched(sc);
}
void
osiop_abort(sc, where)
struct osiop_softc *sc;
const char *where;
{
printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n",
sc->sc_dev.dv_xname, where,
osiop_read_1(sc, OSIOP_DSTAT),
osiop_read_1(sc, OSIOP_SSTAT0),
osiop_read_1(sc, OSIOP_SBCL));
/* XXX XXX XXX */
if (sc->sc_active > 0) {
sc->sc_active = 0;
}
}
void
osiop_init(sc)
struct osiop_softc *sc;
{
int i, inhibit_sync, inhibit_disc;
sc->sc_tcp[1] = 1000 / sc->sc_clock_freq;
sc->sc_tcp[2] = 1500 / sc->sc_clock_freq;
sc->sc_tcp[3] = 2000 / sc->sc_clock_freq;
sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */
if (sc->sc_minsync < 25)
sc->sc_minsync = 25;
if (sc->sc_clock_freq <= 25) {
sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */
sc->sc_tcp[0] = sc->sc_tcp[1];
} else if (sc->sc_clock_freq <= 37) {
sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */
sc->sc_tcp[0] = sc->sc_tcp[2];
} else if (sc->sc_clock_freq <= 50) {
sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */
sc->sc_tcp[0] = sc->sc_tcp[3];
} else {
sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */
sc->sc_tcp[0] = 3000 / sc->sc_clock_freq;
}
if ((sc->sc_cfflags & 0x10000) != 0) {
sc->sc_flags |= OSIOP_NODMA;
#ifdef OSIOP_DEBUG
printf("%s: DMA disabled; use polling\n",
sc->sc_dev.dv_xname);
#endif
}
inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */
inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */
#ifdef OSIOP_DEBUG
if (inhibit_sync != 0)
printf("%s: Inhibiting synchronous transfer: 0x%02x\n",
sc->sc_dev.dv_xname, inhibit_sync);
if (inhibit_disc != 0)
printf("%s: Inhibiting disconnect: 0x%02x\n",
sc->sc_dev.dv_xname, inhibit_disc);
#endif
for (i = 0; i < OSIOP_NTGT; i++) {
if (inhibit_sync & (1 << i))
sc->sc_tinfo[i].flags |= TI_NOSYNC;
if (inhibit_disc & (1 << i))
sc->sc_tinfo[i].flags |= TI_NODISC;
}
osiop_resetbus(sc);
osiop_reset(sc);
}
void
osiop_reset(sc)
struct osiop_softc *sc;
{
struct osiop_acb *acb;
int s;
u_int8_t stat;
#ifdef OSIOP_DEBUG
printf("%s: resetting chip\n", sc->sc_dev.dv_xname);
#endif
if (sc->sc_flags & OSIOP_ALIVE)
osiop_abort(sc, "reset");
s = splbio();
/*
* Reset the chip
* XXX - is this really needed?
*/
/* abort current script */
osiop_write_1(sc, OSIOP_ISTAT,
osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT);
/* reset chip */
osiop_write_1(sc, OSIOP_ISTAT,
osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST);
delay(100);
osiop_write_1(sc, OSIOP_ISTAT,
osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST);
delay(100);
/*
* Set up various chip parameters
*/
osiop_write_1(sc, OSIOP_SCNTL0,
OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG);
osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR);
osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl);
osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4);
/* don't enable interrupts yet */
osiop_write_1(sc, OSIOP_SIEN, 0x00);
osiop_write_1(sc, OSIOP_DIEN, 0x00);
osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id));
osiop_write_1(sc, OSIOP_DWT, 0x00);
osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0)
| OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN);
osiop_write_1(sc, OSIOP_CTEST7,
osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7);
/* will need to re-negotiate sync xfers */
memset(&sc->sc_sync, 0, sizeof(sc->sc_sync));
stat = osiop_read_1(sc, OSIOP_ISTAT);
if (stat & OSIOP_ISTAT_SIP)
osiop_read_1(sc, OSIOP_SSTAT0);
if (stat & OSIOP_ISTAT_DIP)
osiop_read_1(sc, OSIOP_DSTAT);
splx(s);
delay(osiop_reset_delay * 1000);
if (sc->sc_nexus != NULL) {
sc->sc_nexus->xs->error =
(sc->sc_nexus->flags & ACB_F_TIMEOUT) ?
XS_TIMEOUT : XS_RESET;
sc->sc_nexus->status = ACB_S_DONE;
sc->sc_nexus->flags = 0;
osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK);
}
while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) {
acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ?
XS_TIMEOUT : XS_RESET;
acb->status = ACB_S_DONE;
acb->flags = 0;
osiop_scsidone(acb, SCSI_OSIOP_NOCHECK);
}
sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF);
/* enable SCSI and DMA interrupts */
sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/
OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR;
sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR |
/*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID;
osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien);
osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien);
}
void
osiop_resetbus(sc)
struct osiop_softc *sc;
{
osiop_write_1(sc, OSIOP_SIEN, 0);
osiop_write_1(sc, OSIOP_SCNTL1,
osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST);
delay(25);
osiop_write_1(sc, OSIOP_SCNTL1,
osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST);
}
/*
* Setup Data Storage for 53C710 and start SCRIPTS processing
*/
void
osiop_start(sc)
struct osiop_softc *sc;
{
struct osiop_acb *acb = sc->sc_nexus;
struct osiop_ds *ds = acb->ds;
struct scsipi_xfer *xs = acb->xs;
bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma;
int target = xs->xs_periph->periph_target;
int lun = xs->xs_periph->periph_lun;
int disconnect;
int i;
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC &&
osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) {
printf("ACK! osiop was busy: script %p dsa %p active %d\n",
sc->sc_script, acb->ds, sc->sc_active);
printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n",
osiop_read_1(sc, OSIOP_ISTAT),
osiop_read_1(sc, OSIOP_SFBR),
osiop_read_1(sc, OSIOP_LCRC),
osiop_read_1(sc, OSIOP_SIEN),
osiop_read_1(sc, OSIOP_DIEN));
#ifdef DDB
#if 0
Debugger();
#endif
#endif
}
#endif
#ifdef OSIOP_DEBUG
if (acb->status != ACB_S_READY)
panic("osiop_start: non-ready cmd in acb");
#endif
acb->intstat = 0;
ds->cmd.count = acb->cmdlen;
ds->cmd.addr = acb->cmddma->dm_segs[0].ds_addr;
ds->scsi_addr = (1 << (16 + target)) | (sc->sc_sync[target].sxfer << 8);
disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 &&
(sc->sc_tinfo[target].flags & TI_NODISC) == 0;
ds->msgout[0] = MSG_IDENTIFY(lun, disconnect);
ds->id.count = 1;
ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */
ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID;
memset(&ds->data, 0, sizeof(ds->data));
/*
* Negotiate wide is the initial negotiation state; since the 53c710
* doesn't do wide transfers, just begin the synchronous transfer
* negotation here.
*/
if (sc->sc_sync[target].state == NEG_INIT) {
if ((sc->sc_tinfo[target].flags & TI_NOSYNC) != 0) {
sc->sc_sync[target].state = NEG_DONE;
sc->sc_sync[target].sbcl = 0;
sc->sc_sync[target].sxfer = 0;
#ifdef OSIOP_DEBUG
if (osiopsync_debug)
printf("Forcing target %d asynchronous\n",
target);
#endif
} else {
ds->msgbuf[2] = MSG_INVALID;
ds->msgout[1] = MSG_EXTENDED;
ds->msgout[2] = MSG_EXT_SDTR_LEN;
ds->msgout[3] = MSG_EXT_SDTR;
ds->msgout[4] = sc->sc_minsync;
ds->msgout[5] = OSIOP_MAX_OFFSET;
ds->id.count = 6;
sc->sc_sync[target].state = NEG_WAITS;
#ifdef OSIOP_DEBUG
if (osiopsync_debug)
printf("Sending sync request to target %d\n",
target);
#endif
}
}
acb->curaddr = 0;
acb->curlen = 0;
/*
* Build physical DMA addresses for scatter/gather I/O
*/
if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
for (i = 0; i < datadma->dm_nsegs; i++) {
ds->data[i].count = datadma->dm_segs[i].ds_len;
ds->data[i].addr = datadma->dm_segs[i].ds_addr;
}
}
/* sync script data structure */
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
acb->status = ACB_S_ACTIVE;
/* handle timeout */
if ((xs->xs_control & XS_CTL_POLL) == 0) {
int timeout = acb->xs->timeout;
/* start expire timer */
timeout = (timeout > 100000) ?
timeout / 1000 * hz : timeout * hz / 1000;
if (timeout == 0)
timeout = 1;
callout_reset(&xs->xs_callout, timeout,
osiop_timeout, acb);
}
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC &&
osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) {
printf("ACK! osiop was busy at start: "
"script %p dsa %p active %d\n",
sc->sc_script, acb->ds, sc->sc_active);
#ifdef DDB
#if 0
Debugger();
#endif
#endif
}
#endif
if (TAILQ_EMPTY(&sc->nexus_list)) {
if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON)
printf("%s: osiop_select while connected?\n",
sc->sc_dev.dv_xname);
osiop_write_4(sc, OSIOP_TEMP, 0);
osiop_write_1(sc, OSIOP_SBCL, sc->sc_sync[target].sbcl);
osiop_write_4(sc, OSIOP_DSA,
dsdma->dm_segs[0].ds_addr + acb->dsoffset);
osiop_write_4(sc, OSIOP_DSP,
sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts);
OSIOP_TRACE('s', 1, 0, 0);
} else {
if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) {
osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP);
OSIOP_TRACE('s', 2, 0, 0);
} else {
OSIOP_TRACE('s', 3,
osiop_read_1(sc, OSIOP_ISTAT), 0);
}
}
#ifdef OSIOP_DEBUG
osiopstarts++;
#endif
}
/*
* Process a DMA or SCSI interrupt from the 53C710 SIOP
*/
int
osiop_checkintr(sc, istat, dstat, sstat0, status)
struct osiop_softc *sc;
u_int8_t istat;
u_int8_t dstat;
u_int8_t sstat0;
int *status;
{
struct osiop_acb *acb = sc->sc_nexus;
struct osiop_ds *ds;
bus_dmamap_t dsdma = sc->sc_dsdma;
bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr;
int target = 0;
int dfifo, dbc, intcode, sstat1;
dfifo = osiop_read_1(sc, OSIOP_DFIFO);
dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff;
sstat1 = osiop_read_1(sc, OSIOP_SSTAT1);
osiop_write_1(sc, OSIOP_CTEST8,
osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF);
while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) !=
OSIOP_CTEST1_FMT)
;
osiop_write_1(sc, OSIOP_CTEST8,
osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF);
intcode = osiop_read_4(sc, OSIOP_DSPS);
#ifdef OSIOP_DEBUG
osiopints++;
if (osiop_read_4(sc, OSIOP_DSP) != 0 &&
(osiop_read_4(sc, OSIOP_DSP) < scraddr ||
osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) {
printf("%s: dsp not within script dsp %x scripts %lx:%lx",
sc->sc_dev.dv_xname,
osiop_read_4(sc, OSIOP_DSP),
scraddr, scraddr + sizeof(osiop_script));
printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0);
#ifdef DDB
Debugger();
#endif
}
#endif
OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ?
intcode & 0xff : sstat0);
if (acb != NULL) { /* XXX */
ds = acb->ds;
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
#ifdef OSIOP_DEBUG
if (acb->status != ACB_S_ACTIVE)
printf("osiop_checkintr: acb not active (status %d)\n",
acb->status);
#endif
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) {
/* Normal completion status, or check condition */
#ifdef OSIOP_DEBUG
if (osiop_read_4(sc, OSIOP_DSA) !=
dsdma->dm_segs[0].ds_addr + acb->dsoffset) {
printf("osiop: invalid dsa: %x %lx\n",
osiop_read_4(sc, OSIOP_DSA),
dsdma->dm_segs[0].ds_addr + acb->dsoffset);
panic("*** osiop DSA invalid ***");
}
#endif
target = acb->xs->xs_periph->periph_target;
if (sc->sc_sync[target].state == NEG_WAITS) {
if (ds->msgbuf[1] == MSG_INVALID)
printf("%s: target %d ignored sync request\n",
sc->sc_dev.dv_xname, target);
else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT)
printf("%s: target %d rejected sync request\n",
sc->sc_dev.dv_xname, target);
else
/* XXX - need to set sync transfer parameters */
printf("%s: target %d (sync) %02x %02x %02x\n",
sc->sc_dev.dv_xname, target, ds->msgbuf[1],
ds->msgbuf[2], ds->msgbuf[3]);
sc->sc_sync[target].state = NEG_DONE;
}
#ifdef OSIOP_DEBUG
if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) {
#if 0
printf("ACK! osiop was busy at end: "
"script %p dsa %p\n", &osiop_script, ds);
#ifdef DDB
Debugger();
#endif
#endif
}
if (ds->msgbuf[0] != MSG_CMDCOMPLETE)
printf("%s: message was not COMMAND COMPLETE: %02x\n",
sc->sc_dev.dv_xname, ds->msgbuf[0]);
#endif
if (!TAILQ_EMPTY(&sc->nexus_list))
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
*status = ds->stat[0];
acb->status = ACB_S_DONE;
return (1);
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) {
target = acb->xs->xs_periph->periph_target;
if (ds->msgbuf[1] == MSG_EXTENDED &&
ds->msgbuf[2] == MSG_EXT_SDTR_LEN &&
ds->msgbuf[3] == MSG_EXT_SDTR) {
#ifdef OSIOP_DEBUG
if (osiopsync_debug)
printf("sync msg in: "
"%02x %02x %02x %02x %02x %02x\n",
ds->msgbuf[0], ds->msgbuf[1],
ds->msgbuf[2], ds->msgbuf[3],
ds->msgbuf[4], ds->msgbuf[5]);
#endif
sc->sc_sync[target].sxfer = 0;
sc->sc_sync[target].sbcl = 0;
if (ds->msgbuf[2] == MSG_EXT_SDTR_LEN &&
ds->msgbuf[3] == MSG_EXT_SDTR &&
ds->msgbuf[5] != 0) {
printf("%s: target %d now synchronous, "
"period=%d ns, offset=%d\n",
sc->sc_dev.dv_xname, target,
ds->msgbuf[4] * 4, ds->msgbuf[5]);
scsi_period_to_osiop(sc, target);
}
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
osiop_write_1(sc, OSIOP_SXFER,
sc->sc_sync[target].sxfer);
osiop_write_1(sc, OSIOP_SBCL,
sc->sc_sync[target].sbcl);
if (sc->sc_sync[target].state == NEG_WAITS) {
sc->sc_sync[target].state = NEG_DONE;
osiop_write_4(sc, OSIOP_DSP,
scraddr + Ent_clear_ack);
return (0);
}
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
sc->sc_sync[target].state = NEG_DONE;
return (0);
}
/* XXX - not SDTR message */
}
if (sstat0 & OSIOP_SSTAT0_M_A) {
/* Phase mismatch */
#ifdef OSIOP_DEBUG
osiopphmm++;
if (acb == NULL)
printf("%s: Phase mismatch with no active command?\n",
sc->sc_dev.dv_xname);
#endif
if (acb->datalen > 0) {
int adjust = (dfifo - (dbc & 0x7f)) & 0x7f;
if (sstat1 & OSIOP_SSTAT1_ORF)
adjust++;
if (sstat1 & OSIOP_SSTAT1_OLF)
adjust++;
acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust;
acb->curlen = dbc + adjust;
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC) {
printf("Phase mismatch: curaddr %lx "
"curlen %lx dfifo %x dbc %x sstat1 %x "
"adjust %x sbcl %x starts %d acb %p\n",
acb->curaddr, acb->curlen, dfifo,
dbc, sstat1, adjust,
osiop_read_1(sc, OSIOP_SBCL),
osiopstarts, acb);
if (ds->data[1].count != 0) {
int i;
for (i = 0; ds->data[i].count != 0; i++)
printf("chain[%d] "
"addr %x len %x\n", i,
ds->data[i].addr,
ds->data[i].count);
}
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD |
BUS_DMASYNC_PREWRITE);
}
#endif
}
#ifdef OSIOP_DEBUG
OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL),
osiop_read_4(sc, OSIOP_DSP) >> 8,
osiop_read_4(sc, OSIOP_DSP));
if (osiop_debug & DEBUG_PHASE)
printf("Phase mismatch: %x dsp +%lx dcmd %x\n",
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_4(sc, OSIOP_DSP) - scraddr,
osiop_read_4(sc, OSIOP_DBC));
#endif
if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) {
printf("Phase mismatch: "
"REQ not asserted! %02x dsp %x\n",
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_4(sc, OSIOP_DSP));
#if defined(OSIOP_DEBUG) && defined(DDB)
/*Debugger(); XXX is*/
#endif
}
switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) {
case DATA_OUT_PHASE:
case DATA_IN_PHASE:
case STATUS_PHASE:
case COMMAND_PHASE:
case MSG_IN_PHASE:
case MSG_OUT_PHASE:
osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch);
break;
default:
printf("%s: invalid phase\n", sc->sc_dev.dv_xname);
goto bad_phase;
}
return (0);
}
if (sstat0 & OSIOP_SSTAT0_STO) {
/* Select timed out */
#ifdef OSIOP_DEBUG
if (acb == NULL)
printf("%s: Select timeout with no active command?\n",
sc->sc_dev.dv_xname);
if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) {
printf("ACK! osiop was busy at timeout: "
"script %p dsa %lx\n", sc->sc_script,
dsdma->dm_segs[0].ds_addr + acb->dsoffset);
printf(" sbcl %x sdid %x "
"istat %x dstat %x sstat0 %x\n",
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_1(sc, OSIOP_SDID),
istat, dstat, sstat0);
if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) {
printf("Yikes, it's not busy now!\n");
#if 0
*status = SCSI_OSIOP_NOSTATUS;
if (!TAILQ_EMPTY(&sc->nexus_list))
osiop_write_4(sc, OSIOP_DSP,
scraddr + Ent_wait_reselect);
return (1);
#endif
}
#if 0
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
#endif
#ifdef DDB
Debugger();
#endif
return (0);
}
#endif
acb->status = ACB_S_DONE;
*status = SCSI_OSIOP_NOSTATUS;
acb->xs->error = XS_SELTIMEOUT;
if (!TAILQ_EMPTY(&sc->nexus_list))
osiop_write_4(sc, OSIOP_DSP,
scraddr + Ent_wait_reselect);
return (1);
}
if (acb != NULL)
target = acb->xs->xs_periph->periph_target;
else
target = sc->sc_id;
if (sstat0 & OSIOP_SSTAT0_UDC) {
#ifdef OSIOP_DEBUG
if (acb == NULL)
printf("%s: Unexpected disconnect "
"with no active command?\n", sc->sc_dev.dv_xname);
printf("%s: target %d disconnected unexpectedly\n",
sc->sc_dev.dv_xname, target);
#endif
#if 0
osiop_abort(sc, "osiop_chkintr");
#endif
*status = SCSI_CHECK;
if (!TAILQ_EMPTY(&sc->nexus_list))
osiop_write_4(sc, OSIOP_DSP,
scraddr + Ent_wait_reselect);
return (acb != NULL);
}
if (dstat & OSIOP_DSTAT_SIR &&
(intcode == A_int_disc || intcode == A_int_disc_wodp)) {
/* Disconnect */
if (acb == NULL) {
printf("%s: Disconnect with no active command?\n",
sc->sc_dev.dv_xname);
return (0);
}
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC) {
printf("%s: ID %02x disconnected TEMP %x (+%lx) "
"curaddr %lx curlen %lx buf %x len %x dfifo %x "
"dbc %x sstat1 %x starts %d acb %p\n",
sc->sc_dev.dv_xname, 1 << target,
osiop_read_4(sc, OSIOP_TEMP),
(osiop_read_4(sc, OSIOP_TEMP) != 0) ?
osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0,
acb->curaddr, acb->curlen,
ds->data[0].addr, ds->data[0].count,
dfifo, dbc, sstat1, osiopstarts, acb);
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
#endif
/*
* XXXX need to update curaddr/curlen to reflect
* current data transferred. If device disconnected in
* the middle of a DMA block, they should already be set
* by the phase change interrupt. If the disconnect
* occurs on a DMA block boundary, we have to figure out
* which DMA block it was.
*/
if (acb->datalen > 0 &&
osiop_read_4(sc, OSIOP_TEMP) != 0) {
long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr;
if (acb->curlen != 0 &&
acb->curlen != ds->data[0].count)
printf("%s: curaddr/curlen already set? "
"n %lx iob %lx/%lx chain[0] %x/%x\n",
sc->sc_dev.dv_xname, n,
acb->curaddr, acb->curlen,
ds->data[0].addr, ds->data[0].count);
if (n < Ent_datain)
n = (n - Ent_dataout) / 16;
else
n = (n - Ent_datain) / 16;
if (n <= 0 && n > OSIOP_NSG)
printf("TEMP invalid %ld\n", n);
else {
acb->curaddr = ds->data[n].addr;
acb->curlen = ds->data[n].count;
}
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC) {
printf("%s: TEMP offset %ld",
sc->sc_dev.dv_xname, n);
printf(" curaddr %lx curlen %lx\n",
acb->curaddr, acb->curlen);
}
#endif
}
/*
* If data transfer was interrupted by disconnect, curaddr
* and curlen should reflect the point of interruption.
* Adjust the DMA chain so that the data transfer begins
* at the appropriate place upon reselection.
* XXX This should only be done on save data pointer message?
*/
if (acb->curlen > 0) {
int i, j;
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC)
printf("%s: adjusting DMA chain\n",
sc->sc_dev.dv_xname);
if (intcode == A_int_disc_wodp)
printf("%s: ID %02x disconnected "
"without Save Data Pointers\n",
sc->sc_dev.dv_xname, 1 << target);
#endif
for (i = 0; i < OSIOP_NSG; i++) {
if (ds->data[i].count == 0)
break;
if (acb->curaddr >= ds->data[i].addr &&
acb->curaddr <
(ds->data[i].addr + ds->data[i].count))
break;
}
if (i >= OSIOP_NSG || ds->data[i].count == 0) {
printf("couldn't find saved data pointer: "
"curaddr %lx curlen %lx i %d\n",
acb->curaddr, acb->curlen, i);
#ifdef DDB
Debugger();
#endif
}
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC)
printf(" chain[0]: %x/%x -> %lx/%lx\n",
ds->data[0].addr, ds->data[0].count,
acb->curaddr, acb->curlen);
#endif
ds->data[0].addr = acb->curaddr;
ds->data[0].count = acb->curlen;
for (j = 1, i = i + 1;
i < OSIOP_NSG && ds->data[i].count > 0;
i++, j++) {
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC)
printf(" chain[%d]: %x/%x -> %x/%x\n", j,
ds->data[j].addr, ds->data[j].count,
ds->data[i].addr, ds->data[i].count);
#endif
ds->data[j].addr = ds->data[i].addr;
ds->data[j].count = ds->data[i].count;
}
if (j < OSIOP_NSG) {
ds->data[j].addr = 0;
ds->data[j].count = 0;
}
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
sc->sc_tinfo[target].dconns++;
/*
* add nexus to waiting list
* clear nexus
* try to start another command for another target/lun
*/
acb->intstat = sc->sc_flags & OSIOP_INTSOFF;
TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain);
sc->sc_nexus = NULL; /* no current device */
osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect);
/* XXXX start another command ? */
if (!TAILQ_EMPTY(&sc->ready_list))
osiop_sched(sc);
return (0);
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) {
int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1;
int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07;
#ifdef OSIOP_DEBUG
u_int8_t resmsg;
#endif
/* Reconnect */
/* XXXX save current SBCL */
sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL);
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC)
printf("%s: target ID %02x reselected dsps %x\n",
sc->sc_dev.dv_xname, reselid, intcode);
resmsg = osiop_read_1(sc, OSIOP_SFBR);
if (!MSG_ISIDENTIFY(resmsg))
printf("%s: Reselect message in was not identify: "
"%02x\n", sc->sc_dev.dv_xname, resmsg);
#endif
if (sc->sc_nexus != NULL) {
struct scsipi_periph *periph =
sc->sc_nexus->xs->xs_periph;
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DISC)
printf("%s: reselect ID %02x w/active\n",
sc->sc_dev.dv_xname, reselid);
#endif
TAILQ_INSERT_HEAD(&sc->ready_list,
sc->sc_nexus, chain);
sc->sc_tinfo[periph->periph_target].lubusy
&= ~(1 << periph->periph_lun);
sc->sc_active--;
}
/*
* locate acb of reselecting device
* set sc->sc_nexus to acb
*/
TAILQ_FOREACH(acb, &sc->nexus_list, chain) {
struct scsipi_periph *periph = acb->xs->xs_periph;
if (reselid != periph->periph_target ||
reselun != periph->periph_lun) {
continue;
}
TAILQ_REMOVE(&sc->nexus_list, acb, chain);
sc->sc_nexus = acb;
sc->sc_flags |= acb->intstat;
acb->intstat = 0;
osiop_write_4(sc, OSIOP_DSA,
dsdma->dm_segs[0].ds_addr + acb->dsoffset);
osiop_write_1(sc, OSIOP_SXFER,
sc->sc_sync[reselid].sxfer);
osiop_write_1(sc, OSIOP_SBCL,
sc->sc_sync[reselid].sbcl);
break;
}
if (acb == NULL) {
printf("%s: target ID %02x reselect nexus_list %p\n",
sc->sc_dev.dv_xname, reselid,
TAILQ_FIRST(&sc->nexus_list));
panic("unable to find reselecting device");
}
osiop_write_4(sc, OSIOP_TEMP, 0);
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
return (0);
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) {
#ifdef OSIOP_DEBUG
u_int8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2);
/* reselect was interrupted (by Sig_P or select) */
if (osiop_debug & DEBUG_DISC ||
(ctest2 & OSIOP_CTEST2_SIGP) == 0)
printf("%s: reselect interrupted (Sig_P?) "
"scntl1 %x ctest2 %x sfbr %x istat %x/%x\n",
sc->sc_dev.dv_xname,
osiop_read_1(sc, OSIOP_SCNTL1), ctest2,
osiop_read_1(sc, OSIOP_SFBR), istat,
osiop_read_1(sc, OSIOP_ISTAT));
#endif
/* XXX assumes it was not select */
if (sc->sc_nexus == NULL) {
#ifdef OSIOP_DEBUG
printf("%s: reselect interrupted, sc_nexus == NULL\n",
sc->sc_dev.dv_xname);
#if 0
osiop_dump(sc);
#ifdef DDB
Debugger();
#endif
#endif
#endif
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
return (0);
}
target = sc->sc_nexus->xs->xs_periph->periph_target;
osiop_write_4(sc, OSIOP_TEMP, 0);
osiop_write_4(sc, OSIOP_DSA,
dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset);
osiop_write_1(sc, OSIOP_SXFER, sc->sc_sync[target].sxfer);
osiop_write_1(sc, OSIOP_SBCL, sc->sc_sync[target].sbcl);
osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts);
return (0);
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) {
/* Unrecognized message in byte */
if (acb == NULL)
printf("%s: Bad message-in with no active command?\n",
sc->sc_dev.dv_xname);
printf("%s: Unrecognized message in data "
"sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname,
osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1],
osiop_read_1(sc, OSIOP_SBCL));
/* what should be done here? */
osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch);
bus_dmamap_sync(sc->sc_dmat, dsdma,
acb->dsoffset, sizeof(struct osiop_ds),
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (0);
}
if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) {
/* Status phase wasn't followed by message in phase? */
printf("%s: Status phase not followed by message in phase? "
"sbcl %x sbdl %x\n", sc->sc_dev.dv_xname,
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_1(sc, OSIOP_SBDL));
if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) {
/* It is now, just continue the script? */
osiop_write_1(sc, OSIOP_DCNTL,
osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD);
return (0);
}
}
if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) {
printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n",
intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1],
osiop_read_1(sc, OSIOP_SBCL));
osiop_reset(sc);
*status = SCSI_OSIOP_NOSTATUS;
return (0); /* osiop_reset has cleaned up */
}
if (sstat0 & OSIOP_SSTAT0_SGE)
printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname);
if (sstat0 & OSIOP_SSTAT0_PAR)
printf("%s: Parity Error\n", sc->sc_dev.dv_xname);
if (dstat & OSIOP_DSTAT_IID)
printf("%s: Invalid instruction detected\n",
sc->sc_dev.dv_xname);
bad_phase:
/*
* temporary panic for unhandled conditions
* displays various things about the 53C710 status and registers
* then panics.
* XXXX need to clean this up to print out the info, reset, and continue
*/
printf("osiop_chkintr: target %x ds %p\n", target, ds);
printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr,
sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset,
osiop_read_4(sc, OSIOP_DSP),
osiop_read_4(sc, OSIOP_DBC));
printf("osiop_chkintr: istat %x dstat %x sstat0 %x "
"dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n",
istat, dstat, sstat0, intcode,
osiop_read_4(sc, OSIOP_DSA),
osiop_read_1(sc, OSIOP_SBCL),
ds->stat[0], ds->msgbuf[0], ds->msgbuf[1],
osiop_read_1(sc, OSIOP_SFBR));
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_DMA)
panic("osiop_chkintr: **** temp ****");
#endif
#ifdef DDB
Debugger();
#endif
osiop_reset(sc); /* hard reset */
*status = SCSI_OSIOP_NOSTATUS;
acb->status = ACB_S_DONE;
return (0); /* osiop_reset cleaned up */
}
void
osiop_select(sc)
struct osiop_softc *sc;
{
struct osiop_acb *acb = sc->sc_nexus;
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_CMD)
printf("%s: select ", sc->sc_dev.dv_xname);
#endif
if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) {
sc->sc_flags |= OSIOP_INTSOFF;
sc->sc_flags &= ~OSIOP_INTDEFER;
if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) {
osiop_write_1(sc, OSIOP_SIEN, 0);
osiop_write_1(sc, OSIOP_DIEN, 0);
}
#if 0
} else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) {
sc->sc_flags &= ~OSIOP_INTSOFF;
if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) {
osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien);
osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien);
}
#endif
}
#ifdef OSIOP_DEBUG
if (osiop_debug & DEBUG_CMD)
printf("osiop_select: target %x cmd %02x ds %p\n",
acb->xs->xs_periph->periph_target,
acb->xs->cmd->opcode, sc->sc_nexus->ds);
#endif
osiop_start(sc);
return;
}
/*
* 53C710 interrupt handler
*/
void
osiop_intr(sc)
struct osiop_softc *sc;
{
int status, s;
u_int8_t istat, dstat, sstat0;
s = splbio();
istat = sc->sc_istat;
if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) {
splx(s);
return;
}
/* Got a valid interrupt on this device; set by MD handler */
dstat = sc->sc_dstat;
sstat0 = sc->sc_sstat0;
sc->sc_istat = 0;
#ifdef OSIOP_DEBUG
if (!sc->sc_active) {
/* XXX needs sync */
printf("%s: spurious interrupt? "
"istat %x dstat %x sstat0 %x nexus %p status %x\n",
sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus,
(sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0);
}
#endif
#ifdef OSIOP_DEBUG
if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) {
/* XXX needs sync */
printf("%s: intr istat %x dstat %x sstat0 %x dsps %x "
"sbcl %x dsp %x dcmd %x sts %x msg %x\n",
sc->sc_dev.dv_xname,
istat, dstat, sstat0,
osiop_read_4(sc, OSIOP_DSPS),
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_4(sc, OSIOP_DSP),
osiop_read_4(sc, OSIOP_DBC),
(sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0,
(sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0);
}
#endif
if (sc->sc_flags & OSIOP_INTDEFER) {
sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF);
osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien);
osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien);
}
if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) {
#if 0
if (status == SCSI_OSIOP_NOSTATUS)
printf("osiop_intr: no valid status \n");
#endif
if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) !=
OSIOP_INTSOFF) {
#if 0
if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) {
struct scsipi_periph *periph;
periph = sc->sc_nexus->xs->xs_periph;
printf("%s: SCSI bus busy at completion"
" targ %d sbcl %02x sfbr %x lcrc "
"%02x dsp +%x\n", sc->sc_dev.dv_xname,
periph->periphtarget,
osiop_read_1(sc, OSIOP_SBCL),
osiop_read_1(sc, OSIOP_SFBR),
osiop_read_1(sc, OSIOP_LCRC),
osiop_read_4(sc, OSIOP_DSP) -
sc->sc_scrdma->dm_segs[0].ds_addr);
}
#endif
osiop_scsidone(sc->sc_nexus, status);
}
}
splx(s);
}
/*
* This is based on the Progressive Peripherals 33Mhz Zeus driver and will
* not be correct for other 53c710 boards.
*
*/
void
scsi_period_to_osiop(sc, target)
struct osiop_softc *sc;
int target;
{
int period, offset, sxfer, sbcl = 0;
#ifdef DEBUG_SYNC
int i;
#endif
period = sc->sc_nexus->ds->msgbuf[4];
offset = sc->sc_nexus->ds->msgbuf[5];
#ifdef DEBUG_SYNC
sxfer = 0;
if (offset <= OSIOP_MAX_OFFSET)
sxfer = offset;
for (i = 0; i < sizeof(sync_tab) / sizeof(sync_tab[0]); i++) {
if (period <= sync_tab[i].p) {
sxfer |= sync_tab[i].r & 0x70;
sbcl = sync_tab[i].r & 0x03;
break;
}
}
printf("osiop sync old: osiop_sxfr %02x, osiop_sbcl %02x\n",
sxfer, sbcl);
#endif
for (sbcl = 1; sbcl < 4; sbcl++) {
sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3;
if (sxfer >= 0 && sxfer <= 7)
break;
}
if (sbcl > 3) {
printf("osiop sync: unable to compute sync params "
"for period %d ns\n", period * 4);
/*
* XXX need to pick a value we can do and renegotiate
*/
sxfer = sbcl = 0;
} else {
sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ?
offset : OSIOP_MAX_OFFSET);
#ifdef DEBUG_SYNC
printf("osiop sync: params for period %dns: sxfer %x sbcl %x",
period * 4, sxfer, sbcl);
printf(" actual period %dns\n",
sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4));
#endif
}
sc->sc_sync[target].sxfer = sxfer;
sc->sc_sync[target].sbcl = sbcl;
#ifdef DEBUG_SYNC
printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl);
#endif
}
void
osiop_timeout(arg)
void *arg;
{
struct osiop_acb *acb = arg;
struct scsipi_xfer *xs = acb->xs;
struct osiop_softc *sc = acb->sc;
int s;
scsipi_printaddr(xs->xs_periph);
printf("command timeout\n");
s = splbio();
/* reset the scsi bus */
osiop_resetbus(sc);
/* deactivate callout */
callout_stop(&xs->xs_callout);
acb->flags |= ACB_F_TIMEOUT;
osiop_reset(sc);
splx(s);
return;
}
#ifdef OSIOP_DEBUG
#if OSIOP_TRACE_SIZE
void
osiop_dump_trace()
{
int i;
printf("osiop trace: next index %d\n", osiop_trix);
i = osiop_trix;
do {
printf("%3d: '%c' %02x %02x %02x\n", i,
osiop_trbuf[i], osiop_trbuf[i + 1],
osiop_trbuf[i + 2], osiop_trbuf[i + 3]);
i = (i + 4) & (OSIOP_TRACE_SIZE - 1);
} while (i != osiop_trix);
}
#endif
void
osiop_dump_acb(acb)
struct osiop_acb *acb;
{
u_int8_t *b;
int i;
printf("acb@%p ", acb);
if (acb->xs == NULL) {
printf("<unused>\n");
return;
}
b = (u_int8_t *)&acb->xs->cmd;
printf("(%d:%d) status %2x cmdlen %2ld cmd ",
acb->xs->xs_periph->periph_target,
acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen);
for (i = acb->cmdlen; i > 0; i--)
printf(" %02x", *b++);
printf("\n");
printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data,
acb->xs->datalen);
printf("va %p:%lx ", acb->data, acb->datalen);
printf("cur %lx:%lx\n", acb->curaddr, acb->curlen);
}
void
osiop_dump(sc)
struct osiop_softc *sc;
{
struct osiop_acb *acb;
int i, s;
s = splbio();
#if OSIOP_TRACE_SIZE
osiop_dump_trace();
#endif
printf("%s@%p istat %02x\n",
sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT));
if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) {
printf("Free list:\n");
while (acb) {
osiop_dump_acb(acb);
acb = TAILQ_NEXT(acb, chain);
}
}
if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) {
printf("Ready list:\n");
while (acb) {
osiop_dump_acb(acb);
acb = TAILQ_NEXT(acb, chain);
}
}
if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) {
printf("Nexus list:\n");
while (acb) {
osiop_dump_acb(acb);
acb = TAILQ_NEXT(acb, chain);
}
}
if (sc->sc_nexus) {
printf("Nexus:\n");
osiop_dump_acb(sc->sc_nexus);
}
for (i = 0; i < OSIOP_NTGT; i++) {
if (sc->sc_tinfo[i].cmds > 2) {
printf("tgt %d: cmds %d disc %d lubusy %x\n",
i, sc->sc_tinfo[i].cmds,
sc->sc_tinfo[i].dconns,
sc->sc_tinfo[i].lubusy);
}
}
splx(s);
}
#endif
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