From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hancock.sc.steeleye.com (nat9.steeleye.com [65.114.3.137]) by dsl2.external.hp.com (Postfix) with ESMTP id B8814482E for ; Tue, 29 Jul 2003 16:49:03 -0600 (MDT) Received: from mulgrave-w.il.steeleye.com (il-ppp.sc.steeleye.com [172.17.6.240]) by hancock.sc.steeleye.com (8.11.6/linuxconf) with ESMTP id h6TMmxI29916; Tue, 29 Jul 2003 18:48:59 -0400 Subject: Re: [parisc-linux] eisa nic: intel 82556. Driver? From: James Bottomley To: Grant Grundler Cc: Diego Francisco de Gastal Morales , PARISC list In-Reply-To: <20030729213235.GF22989@dsl2.external.hp.com> References: <41001F95FE172B4593DE6F50CAAF2D581AA227@mailserver.tj.rs.gov.br> <20030729213235.GF22989@dsl2.external.hp.com> Content-Type: text/plain Date: 29 Jul 2003 18:48:58 -0400 Message-Id: <1059518940.2298.251.camel@mulgrave> Mime-Version: 1.0 Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: On Tue, 2003-07-29 at 17:32, Grant Grundler wrote: > No EISA cards which require DMA will work (yet). Actually, I believe at least the aha1740 will. The problem is that very few have been properly converted to using the API. A lot have been converted to use the EISA bus abstraction, but there's no incentive to take them further. Fortunately, since EISA cards were mainly designed to work in PIO mode in I/O space, there are quite a few that will work if they've only been converted to the new probing API. > Wax (EISA bus controller) docs haven't been published and a non-coherent > IOMMU (have I got that right, James?) needs to be programmed for DMA. I'm not really sure what the wax IOMMU does. I suspect its main use is to help ISA like cards, but I don't know for sure. It currently looks like Wax/Mongoose are simply bypassed, and the DMA goes straight through the U2/Uturn. James