6a8ebccd6a
(we get LOOP DOWN events, and we'll hang on that at this time). Add other isp_async cases- ISPASYNC_LOOP_DOWN and ISPASYNC_LOOP_UP. DOWN will cause internal queuing until UP, whereupon a timeout will fire up any pending xfers. It doesn't really keep commands from getting destroyed by loop down events, but at least minimizes the damage. This was much easier to implement with CAM.
426 lines
11 KiB
C
426 lines
11 KiB
C
/* $NetBSD: isp_netbsd.c,v 1.10 1999/02/09 00:42:22 mjacob Exp $ */
|
|
/* release_02_05_99 */
|
|
/*
|
|
* Platform (NetBSD) dependent common attachment code for Qlogic adapters.
|
|
*
|
|
*---------------------------------------
|
|
* Copyright (c) 1997, 1998 by Matthew Jacob
|
|
* NASA/Ames Research Center
|
|
* 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 immediately at the beginning of the file, without modification,
|
|
* 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 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 AUTHOR 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.
|
|
*
|
|
* The author may be reached via electronic communications at
|
|
*
|
|
* mjacob@nas.nasa.gov
|
|
* mjacob@feral.com
|
|
*
|
|
* or, via United States Postal Address
|
|
*
|
|
* Matthew Jacob
|
|
* Feral Software
|
|
* 2339 3rd Street
|
|
* Suite 24
|
|
* San Francisco, CA, 94107
|
|
*/
|
|
|
|
#include <dev/ic/isp_netbsd.h>
|
|
|
|
static void ispminphys __P((struct buf *));
|
|
static int32_t ispcmd __P((ISP_SCSI_XFER_T *));
|
|
|
|
static struct scsipi_device isp_dev = { NULL, NULL, NULL, NULL };
|
|
static int isp_poll __P((struct ispsoftc *, ISP_SCSI_XFER_T *, int));
|
|
static void isp_watch __P((void *));
|
|
static void isp_internal_restart __P((void *));
|
|
|
|
#define FC_OPENINGS RQUEST_QUEUE_LEN / (MAX_FC_TARG-1)
|
|
#define PI_OPENINGS RQUEST_QUEUE_LEN / (MAX_TARGETS-1)
|
|
|
|
/*
|
|
* Complete attachment of hardware, include subdevices.
|
|
*/
|
|
void
|
|
isp_attach(isp)
|
|
struct ispsoftc *isp;
|
|
{
|
|
|
|
isp->isp_osinfo._adapter.scsipi_cmd = ispcmd;
|
|
isp->isp_osinfo._adapter.scsipi_minphys = ispminphys;
|
|
|
|
isp->isp_state = ISP_RUNSTATE;
|
|
isp->isp_osinfo._link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
|
|
isp->isp_osinfo._link.adapter_softc = isp;
|
|
isp->isp_osinfo._link.device = &isp_dev;
|
|
isp->isp_osinfo._link.adapter = &isp->isp_osinfo._adapter;
|
|
TAILQ_INIT(&isp->isp_osinfo.waitq);
|
|
|
|
if (isp->isp_type & ISP_HA_FC) {
|
|
isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_FC_TARG-1;
|
|
#ifdef SCCLUN
|
|
/*
|
|
* 16 bits worth, but let's be reasonable..
|
|
*/
|
|
isp->isp_osinfo._link.scsipi_scsi.max_lun = 255;
|
|
#else
|
|
isp->isp_osinfo._link.scsipi_scsi.max_lun = 15;
|
|
#endif
|
|
isp->isp_osinfo._link.openings = FC_OPENINGS;
|
|
isp->isp_osinfo._link.scsipi_scsi.adapter_target =
|
|
((fcparam *)isp->isp_param)->isp_loopid;
|
|
} else {
|
|
isp->isp_osinfo._link.openings = PI_OPENINGS;
|
|
isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_TARGETS-1;
|
|
if (isp->isp_bustype == ISP_BT_SBUS) {
|
|
isp->isp_osinfo._link.scsipi_scsi.max_lun = 7;
|
|
} else {
|
|
/*
|
|
* Too much target breakage at present.
|
|
*/
|
|
#if 0
|
|
if (isp->isp_fwrev >= ISP_FW_REV(7,55))
|
|
isp->isp_osinfo._link.scsipi_scsi.max_lun = 31;
|
|
else
|
|
#endif
|
|
isp->isp_osinfo._link.scsipi_scsi.max_lun = 7;
|
|
}
|
|
isp->isp_osinfo._link.scsipi_scsi.adapter_target =
|
|
((sdparam *)isp->isp_param)->isp_initiator_id;
|
|
}
|
|
if (isp->isp_osinfo._link.openings < 2)
|
|
isp->isp_osinfo._link.openings = 2;
|
|
isp->isp_osinfo._link.type = BUS_SCSI;
|
|
|
|
/*
|
|
* Send a SCSI Bus Reset (used to be done as part of attach,
|
|
* but now left to the OS outer layers).
|
|
*
|
|
* XXX: For now, skip resets for FC because the method by which
|
|
* XXX: we deal with loop down after issuing resets (which causes
|
|
* XXX: port logouts for all devices) needs interrupts to run so
|
|
* XXX: that async events happen.
|
|
*/
|
|
|
|
if (isp->isp_type & ISP_HA_SCSI)
|
|
(void) isp_control(isp, ISPCTL_RESET_BUS, NULL);
|
|
|
|
/*
|
|
* Start the watchdog.
|
|
*/
|
|
isp->isp_dogactive = 1;
|
|
timeout(isp_watch, isp, 30 * hz);
|
|
|
|
/*
|
|
* And attach children (if any).
|
|
*/
|
|
config_found((void *)isp, &isp->isp_osinfo._link, scsiprint);
|
|
}
|
|
|
|
/*
|
|
* minphys our xfers
|
|
*
|
|
* Unfortunately, the buffer pointer describes the target device- not the
|
|
* adapter device, so we can't use the pointer to find out what kind of
|
|
* adapter we are and adjust accordingly.
|
|
*/
|
|
|
|
static void
|
|
ispminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
/*
|
|
* XX: Only the 1020 has a 24 bit limit.
|
|
*/
|
|
if (bp->b_bcount >= (1 << 24)) {
|
|
bp->b_bcount = (1 << 24);
|
|
}
|
|
minphys(bp);
|
|
}
|
|
|
|
static int
|
|
ispcmd(xs)
|
|
ISP_SCSI_XFER_T *xs;
|
|
{
|
|
struct ispsoftc *isp;
|
|
int result;
|
|
int s;
|
|
|
|
isp = XS_ISP(xs);
|
|
s = splbio();
|
|
/*
|
|
* This is less efficient than I would like in that the
|
|
* majority of cases will have to do some pointer deferences
|
|
* to find out that things don't need to be updated.
|
|
*/
|
|
if ((xs->flags & SCSI_AUTOCONF) == 0 && (isp->isp_type & ISP_HA_SCSI)) {
|
|
sdparam *sdp = isp->isp_param;
|
|
if (sdp->isp_devparam[XS_TGT(xs)].dev_flags !=
|
|
sdp->isp_devparam[XS_TGT(xs)].cur_dflags) {
|
|
u_int16_t f = DPARM_WIDE|DPARM_SYNC|DPARM_TQING;
|
|
if (xs->sc_link->quirks & SDEV_NOSYNC)
|
|
f &= ~DPARM_SYNC;
|
|
if (xs->sc_link->quirks & SDEV_NOWIDE)
|
|
f &= ~DPARM_WIDE;
|
|
if (xs->sc_link->quirks & SDEV_NOTAG)
|
|
f &= ~DPARM_TQING;
|
|
sdp->isp_devparam[XS_TGT(xs)].dev_flags &=
|
|
~(DPARM_WIDE|DPARM_SYNC|DPARM_TQING);
|
|
sdp->isp_devparam[XS_TGT(xs)].dev_flags |= f;
|
|
sdp->isp_devparam[XS_TGT(xs)].dev_update = 1;
|
|
isp->isp_update = 1;
|
|
}
|
|
}
|
|
/*
|
|
* Check for queue blockage...
|
|
*/
|
|
|
|
if (isp->isp_osinfo.blocked) {
|
|
if (xs->flags & SCSI_POLL) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
splx(s);
|
|
return (TRY_AGAIN_LATER);
|
|
}
|
|
TAILQ_INSERT_TAIL(&isp->isp_osinfo.waitq, xs, adapter_q);
|
|
splx(s);
|
|
return (CMD_QUEUED);
|
|
}
|
|
|
|
result = ispscsicmd(xs);
|
|
if (result != CMD_QUEUED || (xs->flags & SCSI_POLL) == 0) {
|
|
(void) splx(s);
|
|
return (result);
|
|
}
|
|
|
|
/*
|
|
* If we can't use interrupts, poll on completion.
|
|
*/
|
|
if (isp_poll(isp, xs, XS_TIME(xs))) {
|
|
/*
|
|
* If no other error occurred but we didn't finish,
|
|
* something bad happened.
|
|
*/
|
|
if (XS_IS_CMD_DONE(xs) == 0) {
|
|
isp->isp_nactive--;
|
|
if (isp->isp_nactive < 0)
|
|
isp->isp_nactive = 0;
|
|
if (XS_NOERR(xs)) {
|
|
isp_lostcmd(isp, xs);
|
|
XS_SETERR(xs, HBA_BOTCH);
|
|
}
|
|
}
|
|
}
|
|
(void) splx(s);
|
|
return (CMD_COMPLETE);
|
|
}
|
|
|
|
static int
|
|
isp_poll(isp, xs, mswait)
|
|
struct ispsoftc *isp;
|
|
ISP_SCSI_XFER_T *xs;
|
|
int mswait;
|
|
{
|
|
|
|
while (mswait) {
|
|
/* Try the interrupt handling routine */
|
|
(void)isp_intr((void *)isp);
|
|
|
|
/* See if the xs is now done */
|
|
if (XS_IS_CMD_DONE(xs)) {
|
|
return (0);
|
|
}
|
|
SYS_DELAY(1000); /* wait one millisecond */
|
|
mswait--;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
isp_watch(arg)
|
|
void *arg;
|
|
{
|
|
int i;
|
|
struct ispsoftc *isp = arg;
|
|
ISP_SCSI_XFER_T *xs;
|
|
ISP_ILOCKVAL_DECL;
|
|
|
|
/*
|
|
* Look for completely dead commands (but not polled ones).
|
|
*/
|
|
ISP_ILOCK(isp);
|
|
for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
|
|
if ((xs = (ISP_SCSI_XFER_T *) isp->isp_xflist[i]) == NULL) {
|
|
continue;
|
|
}
|
|
if (XS_TIME(xs) == 0) {
|
|
continue;
|
|
}
|
|
XS_TIME(xs) -= (WATCH_INTERVAL * 1000);
|
|
/*
|
|
* Avoid later thinking that this
|
|
* transaction is not being timed.
|
|
* Then give ourselves to watchdog
|
|
* periods of grace.
|
|
*/
|
|
if (XS_TIME(xs) == 0) {
|
|
XS_TIME(xs) = 1;
|
|
} else if (XS_TIME(xs) > -(2 * WATCH_INTERVAL * 1000)) {
|
|
continue;
|
|
}
|
|
if (isp_control(isp, ISPCTL_ABORT_CMD, xs)) {
|
|
printf("%s: isp_watch failed to abort command\n",
|
|
isp->isp_name);
|
|
isp_restart(isp);
|
|
break;
|
|
}
|
|
}
|
|
timeout(isp_watch, isp, WATCH_INTERVAL * hz);
|
|
isp->isp_dogactive = 1;
|
|
ISP_IUNLOCK(isp);
|
|
}
|
|
|
|
/*
|
|
* Free any associated resources prior to decommissioning and
|
|
* set the card to a known state (so it doesn't wake up and kick
|
|
* us when we aren't expecting it to).
|
|
*
|
|
* Locks are held before coming here.
|
|
*/
|
|
void
|
|
isp_uninit(isp)
|
|
struct ispsoftc *isp;
|
|
{
|
|
ISP_ILOCKVAL_DECL;
|
|
ISP_ILOCK(isp);
|
|
/*
|
|
* Leave with interrupts disabled.
|
|
*/
|
|
DISABLE_INTS(isp);
|
|
|
|
/*
|
|
* Turn off the watchdog (if active).
|
|
*/
|
|
if (isp->isp_dogactive) {
|
|
untimeout(isp_watch, isp);
|
|
isp->isp_dogactive = 0;
|
|
}
|
|
|
|
ISP_IUNLOCK(isp);
|
|
}
|
|
|
|
/*
|
|
* Restart function after a LOOP UP event (e.g.),
|
|
* done as a timeout for some hysteresis.
|
|
*/
|
|
static void
|
|
isp_internal_restart(arg)
|
|
void *arg;
|
|
{
|
|
struct ispsoftc *isp = arg;
|
|
int result, nrestarted = 0, s = splbio();
|
|
|
|
if (isp->isp_osinfo.blocked == 0) {
|
|
struct scsipi_xfer *xs;
|
|
while ((xs = TAILQ_FIRST(&isp->isp_osinfo.waitq)) != NULL) {
|
|
TAILQ_REMOVE(&isp->isp_osinfo.waitq, xs, adapter_q);
|
|
if ((result = ispscsicmd(xs)) != CMD_QUEUED) {
|
|
printf("%s: botched command restart (0x%x)\n",
|
|
isp->isp_name, result);
|
|
xs->flags |= ITSDONE;
|
|
if (xs->error == XS_NOERROR)
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
scsipi_done(xs);
|
|
}
|
|
nrestarted++;
|
|
}
|
|
printf("%s: requeued %d commands\n", isp->isp_name, nrestarted);
|
|
}
|
|
(void) splx(s);
|
|
}
|
|
|
|
int
|
|
isp_async(isp, cmd, arg)
|
|
struct ispsoftc *isp;
|
|
ispasync_t cmd;
|
|
void *arg;
|
|
{
|
|
int s = splbio();
|
|
switch (cmd) {
|
|
case ISPASYNC_LOOP_DOWN:
|
|
/*
|
|
* Hopefully we get here in time to minimize the number
|
|
* of commands we are firing off that are sure to die.
|
|
*/
|
|
isp->isp_osinfo.blocked = 1;
|
|
break;
|
|
case ISPASYNC_LOOP_UP:
|
|
isp->isp_osinfo.blocked = 0;
|
|
timeout(isp_internal_restart, isp, 1);
|
|
break;
|
|
case ISPASYNC_NEW_TGT_PARAMS:
|
|
if (isp->isp_type & ISP_HA_SCSI) {
|
|
sdparam *sdp = isp->isp_param;
|
|
char *wt;
|
|
int ns, flags, tgt;
|
|
|
|
tgt = *((int *) arg);
|
|
|
|
flags = sdp->isp_devparam[tgt].dev_flags;
|
|
if (flags & DPARM_SYNC) {
|
|
ns = sdp->isp_devparam[tgt].sync_period * 4;
|
|
} else {
|
|
ns = 0;
|
|
}
|
|
switch (flags & (DPARM_WIDE|DPARM_TQING)) {
|
|
case DPARM_WIDE:
|
|
wt = ", 16 bit wide\n";
|
|
break;
|
|
case DPARM_TQING:
|
|
wt = ", Tagged Queueing Enabled\n";
|
|
break;
|
|
case DPARM_WIDE|DPARM_TQING:
|
|
wt = ", 16 bit wide, Tagged Queueing Enabled\n";
|
|
break;
|
|
default:
|
|
wt = "\n";
|
|
break;
|
|
}
|
|
if (ns) {
|
|
printf("%s: Target %d at %dMHz Max Offset %d%s",
|
|
isp->isp_name, tgt, 1000 / ns,
|
|
sdp->isp_devparam[tgt].sync_offset, wt);
|
|
} else {
|
|
printf("%s: Target %d Async Mode%s",
|
|
isp->isp_name, tgt, wt);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|