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A) Attempt to get clock rate from ISP chip prior to bashing it over the head 

in reset. If none there, try and get from the bus/platform specific code.
If a nonzero value for either, set the clock rate. This is why the PCI
card versions weren't working- they need to be set at 60MHZ, rather than
the default 40MHZ (which worked fine for the internal ISP chips on the
Alpha 8X00).

B) If a isp_poll returns failure (command never completed) to the caller
and no error is set in the xs struct, set XS_SELTIMEOUT. And then call...

C) Added isp_lostcmd function to try and ask the ISP chip about it's current
state as well as the state of commands for a particular target/lun. This is
going along to try and figure out why the very first command to the ISP always
seems to get swallowed up.
This commit is contained in:
mjacob 1997-04-05 02:53:22 +00:00
parent 8f28eaab67
commit ddc693c299
1 changed files with 68 additions and 3 deletions
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71
sys/dev/ic/isp.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: isp.c,v 1.3 1997/03/23 00:50:07 cgd Exp $ */
/* $NetBSD: isp.c,v 1.4 1997/04/05 02:53:22 mjacob Exp $ */
/*
* Machine Independent (well, as best as possible)
@ -86,6 +86,7 @@ static struct scsi_device isp_dev = { NULL, NULL, NULL, NULL };
static int isp_poll __P((struct ispsoftc *, struct scsi_xfer *, int));
static int isp_parse_status __P((struct ispsoftc *, ispstatusreq_t *));
static void isp_lostcmd __P((struct ispsoftc *, struct scsi_xfer *));
/*
* Reset Hardware.
@ -98,13 +99,26 @@ isp_reset(isp)
{
mbreg_t mbs;
int loops, i;
u_int8_t oldclock;
isp->isp_state = ISP_NILSTATE;
/*
* Do MD specific pre initialization
*/
ISP_RESET0(isp);
/*
* Try and get old clock rate out before we hit the
* chip over the head.
*/
mbs.param[0] = MBOX_GET_CLOCK_RATE;
(void) isp_mboxcmd(isp, &mbs);
if (mbs.param[0] == MBOX_COMMAND_COMPLETE) {
oldclock = mbs.param[1];
} else {
oldclock = 0;
}
/*
* Hit the chip over the head with hammer.
*/
@ -252,6 +266,21 @@ isp_reset(isp)
mbs.param[0] = MBOX_EXEC_FIRMWARE;
mbs.param[1] = isp->isp_mdvec->dv_codeorg;
(void) isp_mboxcmd(isp, &mbs);
/*
* Set CLOCK RATE
*/
if (isp->isp_mdvec->dv_clock || oldclock) {
u_int8_t save;
mbs.param[0] = MBOX_SET_CLOCK_RATE;
save = mbs.param[1] =
(oldclock)? oldclock : isp->isp_mdvec->dv_clock;
(void) isp_mboxcmd(isp, &mbs);
if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
printf("%s: failed to set CLOCKRATE\n", isp->isp_name);
return;
}
}
mbs.param[0] = MBOX_ABOUT_FIRMWARE;
(void) isp_mboxcmd(isp, &mbs);
if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
@ -474,7 +503,7 @@ isp_attach(isp)
isp->isp_link.adapter_target = isp->isp_initiator_id;
isp->isp_link.adapter = &isp_switch;
isp->isp_link.device = &isp_dev;
isp->isp_link.openings = RESULT_QUEUE_LEN / (MAX_TARGETS - 1);
isp->isp_link.openings = RQUEST_QUEUE_LEN / (MAX_TARGETS - 1);
isp->isp_link.max_target = MAX_TARGETS-1;
config_found((void *)isp, &isp->isp_link, scsiprint);
}
@ -610,6 +639,14 @@ ispscsicmd(xs)
/* XXX really nuke it */
}
#endif
/*
* If no other error occurred but we didn't finish,
* assume a *selection* timeout.
*/
if ((xs->flags & ITSDONE) == 0 && xs->error == XS_NOERROR) {
isp_lostcmd(isp, xs);
xs->error = XS_SELTIMEOUT;
}
}
return (COMPLETE);
}
@ -1006,3 +1043,31 @@ isp_mboxcmd(isp, mbp)
ISP_WRITE(isp, BIU_SEMA, 0);
return (0);
}
static void
isp_lostcmd(struct ispsoftc *isp, struct scsi_xfer *xs)
{
mbreg_t mbs;
mbs.param[0] = MBOX_GET_FIRMWARE_STATUS;
(void) isp_mboxcmd(isp, &mbs);
if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
printf("%s: couldn't GET FIRMWARE STATUS\n", isp->isp_name);
return;
}
printf("%s: lost command, %d commands active of total %d\n",
isp->isp_name, mbs.param[1], mbs.param[2]);
if (xs == NULL || xs->sc_link == NULL)
return;
mbs.param[0] = MBOX_GET_DEV_QUEUE_STATUS;
mbs.param[1] = xs->sc_link->target << 8 | xs->sc_link->lun;
(void) isp_mboxcmd(isp, &mbs);
if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
printf("%s: couldn't GET DEVICE STATUS\n", isp->isp_name);
return;
}
printf("%s: lost command, target %d lun %d, State: %x\n",
isp->isp_name, mbs.param[1] >> 8, mbs.param[1] & 0x7,
mbs.param[2] & 0xff);
}