From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from cthulhu.engr.sgi.com (cthulhu.engr.sgi.com [192.26.80.2]) by neteng.engr.sgi.com (970903.SGI.8.8.7/960327.SGI.AUTOCF) via SMTP id BAA416282 for ; Mon, 22 Dec 1997 01:27:29 -0800 (PST) Return-Path: Received: (from majordomo-owner@localhost) by cthulhu.engr.sgi.com (950413.SGI.8.6.12/960327.SGI.AUTOCF) id BAA19896 for linux-list; Mon, 22 Dec 1997 01:18:16 -0800 Received: from sgi.sgi.com (sgi.engr.sgi.com [192.26.80.37]) by cthulhu.engr.sgi.com (950413.SGI.8.6.12/960327.SGI.AUTOCF) via ESMTP id BAA19858 for ; Mon, 22 Dec 1997 01:17:50 -0800 Received: from netscape.com (h-205-217-237-47.netscape.com [205.217.237.47]) by sgi.sgi.com (950413.SGI.8.6.12/970507) via ESMTP id BAA26828 for ; Mon, 22 Dec 1997 01:17:49 -0800 env-from (shaver@netscape.com) Received: from dredd.mcom.com (dredd.mcom.com [205.217.237.54]) by netscape.com (8.8.5/8.8.5) with ESMTP id BAA16117 for ; Mon, 22 Dec 1997 01:17:07 -0800 (PST) Received: from netscape.com ([205.217.243.3]) by dredd.mcom.com (Netscape Messaging Server 3.0) with ESMTP id AAA23070 for ; Mon, 22 Dec 1997 01:17:07 -0800 Message-ID: <349E2FCF.605C2665@netscape.com> Date: Mon, 22 Dec 1997 01:15:59 -0800 From: Mike Shaver Organization: Package Reflectors X-Mailer: Mozilla 4.02 [en] (X11; U; IRIX 6.2 IP22) MIME-Version: 1.0 To: linux@cthulhu.engr.sgi.com Subject: flush_cache_all() hoses my Indy Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux@cthulhu.engr.sgi.com Precedence: bulk OK, I've been tracking a bug that only seems to appear on the Indy I have at home right now (belongs to the housemates). After sgiseeq_init allocates the ring buffers, it calls flush_cache_all(). On this system, that zeroes out the ring buffer pointers (rx and tx -- likely the entire dev->priv block and more) and then setup_tx_ring gets understandably upset. =) Anyway, I'm not enough of a MIPS guru to really say much more, but I'll poke around tonight and see if I can stumble across anything useful. Linux reports: MIPS 4400 FPU ICACHE DCACHE SCACHE CPU Revision 0460 hinv tells me: 1 200 MHZ IP22 Processor FPU: MIPS R4000 Floating Point Coprocessor Revision: 0.0 CPU: MIPS R4400 Processor Chip Revision: 6.0 Instruction cache size: 16 Kbytes Data cache size: 16 Kbytes More than this I do not know, but I'll run any test that doesn't risk permanent damage. Mike