From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <95441601ed581f7def5543865cd7ee67@quanstro.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] new 9load report
From: erik quanstrom <quanstro@quanstro.net>
Date: Thu,  8 Nov 2007 19:42:20 -0500
In-Reply-To: <d1c554290711081443q3a0b9b87q1dbad2fafc80c3a1@mail.gmail.com>
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> PBS1... Plan 9 from Bell Labs
> ELCR: 0C00
> Initial probe, to find plan9.ini... dev A0 port 1F0 config 85C0
> capabilities 0F00 mwdma 0407
> pcirouting 8086/27DF at pin 1 irq 10
> dev A0 port 18D0 config 045A capabilities 2F00 mwdma 0007 udma 203F
> LLBA sectors 117231408
> ahci0 port 0xd4544400: hba sss 0; ncs 31; coal 0; mports 3; led 1; clo 1; ems 0;
> 
> intel 63[12]xesb: sata-I ports with 2 ports
> FLAGS=10282 TRAP=e ECODE=0 PC=8002a3a0
>    AX f000ff6b BX 80039f64 CX f000ff53 DX 000003d5
>    SI 80037e50 DI 00000002 BP 00000008
>    CS 0010 DS 0008 ES 0008 FS 0008 GS 0008
>    CR0 80000011 CR2 f000ff6b CR3 0000c000
> panic: exception/interrupt 14
> 
> dmesg at http://mordor.tip9ug.jp/who/iru/dmesg.ein
> sorry any typos from the paper to the keyboard.

this is an excellent bug report.  it's interesting that the
actual irq is 11, but the panic is for exception/interrupt 14.

are you sure the port (0xd4544400) is accurate?  generally, bios
aligns bars a bit more.

if you can pxeboot this machine, would you be willing to try
/n/sources/contrib/quanstro/9pxeload9?

also, if you have a machine to compile on, if you could add
a debug to this loop from the 9load on sources:

/n/sources/plan9/sys/src/boot/pc/sdiahci.c:1584,1588
		for(i = 0; i < n; i++)
			if(ahciidle(c->drive[i]->port) == -1){
				dprint("intel 63[12]xesb: port %d wedged; abort\n", i);
				goto loop;
			}
=>
		for(i = 0; i < n; i++){
			print("idle ahci %d\n", n);
			if(ahciidle(c->drive[i]->port) == -1){
				dprint("intel 63[12]xesb: port %d wedged; abort\n", i);
				goto loop;
			}
		}

- erik