From owner-freebsd-questions Mon Oct 11 11:28:50 1999 Delivered-To: freebsd-questions@freebsd.org Received: from Aries.utstar.com (mail.utstar.com [205.185.99.6]) by hub.freebsd.org (Postfix) with ESMTP id C44AD15539 for ; Mon, 11 Oct 1999 11:28:45 -0700 (PDT) (envelope-from vijay@utstar.com) Received: from utstar.com (nj37.utstar.com [172.16.2.37] (may be forged)) by Aries.utstar.com (8.9.3/8.9.3) with ESMTP id OAA29891 for ; Mon, 11 Oct 1999 14:24:44 -0400 (EDT) Message-ID: <38022AC1.6AAC0D83@utstar.com> Date: Mon, 11 Oct 1999 14:21:53 -0400 From: Vijay Tinnanur X-Mailer: Mozilla 4.03 [en] (Win95; I) MIME-Version: 1.0 To: freebsd-questions@FreeBSD.ORG Subject: Physical to virtual mapping Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, I am developing a device driver for a PCI card. I require to map physical address of the buffer to it corresponding virtual address ( something that is inverse of vtophys ). Can anyone tell me how to do it. As I am operating with multiple channels it may not be possible for me to keep a translation of the virtual to physical mapping after I allocate the buffer and do a vtophys operation. I will be glad if anyone can send me a lead on this to vijay@utstar.com Thank you, vijay. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message