Re: [9fans] 53c895 failed to INIT

[nigel@9fs.org]

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Oh dear. I read the code too early in the morning.

It appears the table entry is missing for 895.

But things are worse. The code is too old for an 895.

We need to transfer /sys/src/9/pc/sd53c8xx.c to
/sys/src/fs/*/scsincr53c8xx.c, and also the microcode.

I run my fileserver on an 875 which is OK (just).


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From: arisawa@ar.aichi-u.ac.jp
To: 9fans@cse.psu.edu
Subject: Re: [9fans] 53c895 failed to INIT
Date: Fri, 28 Jul 2000 01:21:51 -0400 (EDT)
Message-ID: <200007280521.BAA08647@cse.psu.edu>

Hello,

nigel@9fs.org said:
>#define KPRINT if(1)print
>#define IPRINT if(1)print
>#define DEBUG(n) ((n) <= 2)

and jmk@plan9.bell-labs.com:
>Which of the fileserver kernels are you using (plan9pc, emelie, etc.)?
>They were all slightly different in the original release but will all
>be the same in the update planned this weekend.
>
>What do you have in plan9.ini?

Thanks.

My 9pcfs is based on emelie and my plan9.ini is as follows.
----- plan9.ini ----
*nomp=1
bootfile=fd0!dos!9pcfs
distname=plan9
scsi0=type=53c8xx
ether0=type=elnk3
monitor=cga
mouseport=ps2
nvr=fd!0!plan9.nvr
sysname=gaea
--------------------

Manual says known scsi type is mylex and 53c8xx.
Not ncr53c8xx.
However you will find in fs/emelie/scsi.c:

static struct {
	char*	type;
	Scsiio	(*reset)(int, ISAConf*);
} scsictlr[] = {
	{ "aha1542", buslogic, },
	{ "buslogic", buslogic, },
	{ "ncr53c8xx", ncr53c8xxreset, },
	{ 0, },
};

So I have add a line this time
	{ "53c8xx", ncr53c8xxreset, },
so that 9pcfs can go farther to the line including (*scsictlr[n].reset)(ctlrno, ctlr))
 in fs/emelie/scsi.c:
		for(n = 0; scsictlr[n].type; n++) {
			if(strcmp(scsictlr[n].type, ctlr->type))
				continue;
			if((ctlr->io = (*scsictlr[n].reset)(ctlrno, ctlr)) == 0)
				break;

However problem has not fixed; 9pcfs shows the same message as before:
scsi#0: 53c895: port 0 Failed to INIT controller
So I investigated farther.

In the function ncr53c8xxreset() in fs/emelie/scsincr53c8xx.c,
9pcfs can proceed to init(ctlr, isa, differential).
So I added the debugging code in init function as follows:
	rid = pcicfgr8(pcidev, PciRID);
	for (var = 0; var < MAXVAR; var++) {
print("scsincr53c8xx.c: init():  did=%d,%d rid=%d, %d\n",
pcidev->did,variant[var].did,rid,variant[var].maxrid);
		if (pcidev->did == variant[var].did && rid <= variant[var].maxrid)
			break;
	}
	if (var >= MAXVAR)
		return 0;
	print("scsi#%d: %s rev. 0x%.2x intr=%d command=%.4x\n",
		ctlr->ctlrno, variant[var].name, rid,
		pcidev->intl, pcicfgr16(pcidev, PciPCR));

The result is:
scsincr53c8xx.c: init():  did=12,1 rid=1,15
scsincr53c8xx.c: init():  did=12,1 rid=1,31
scsincr53c8xx.c: init():  did=12,1 rid=1,255
scsincr53c8xx.c: init():  did=12,5 rid=1,255
scsincr53c8xx.c: init():  did=12,4 rid=1,255
scsincr53c8xx.c: init():  did=12,3 rid=1,15
scsincr53c8xx.c: init():  did=12,3 rid=1,255
scsincr53c8xx.c: init():  did=12,6 rid=1,15
scsincr53c8xx.c: init():  did=12,6 rid=1,255
scsincr53c8xx.c: init():  did=12,15 rid=1,1
scsincr53c8xx.c: init():  did=12,15 rid=1,255
scsincr53c8xx.c: init():  did=12,13 rid=1,255
scsincr53c8xx.c: init():  did=12,11 rid=1,255

Thanks again.

Kenji Arisawa
E-mail: arisawa@aichi-u.ac.jp