From owner-freebsd-alpha Thu Mar 9 22:57: 8 2000 Delivered-To: freebsd-alpha@freebsd.org Received: from mass.cdrom.com (castles556.castles.com [208.214.165.120]) by hub.freebsd.org (Postfix) with ESMTP id AF2C837B963 for ; Thu, 9 Mar 2000 22:57:05 -0800 (PST) (envelope-from msmith@mass.cdrom.com) Received: from mass.cdrom.com (localhost [127.0.0.1]) by mass.cdrom.com (8.9.3/8.9.3) with ESMTP id WAA00620 for ; Thu, 9 Mar 2000 22:58:32 -0800 (PST) (envelope-from msmith@mass.cdrom.com) Message-Id: <200003100658.WAA00620@mass.cdrom.com> X-Mailer: exmh version 2.1.1 10/15/1999 To: alpha@freebsd.org Subject: problem with bus_dmamap_destroy? Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 09 Mar 2000 22:58:32 -0800 From: Mike Smith Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Just wondering if anyone's seen a problem with bus_dmamap_destroy() hanging on the Alpha. I've tracked down a hang when unloading the Mylex driver which doesn't maifest on the i386. error = bus_dma_tag_create(sc->mlx_parent_dmat, /* parent */ 1, 0, /* alignment, boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 0, /* flags */ &sc->mlx_buffer_dmat); ... bus_dmamap_create(sc->mlx_buffer_dmat, 0, &mc->mc_dmamap); ... bus_dmamap_destroy(sc->mlx_buffer_dmat, mc->mc_dmamap); I've had someone suggest that the lowaddr parameter should be 0; is this actually correct? (The DMA mapping does otherwise seem to work...) Any "been there, done that" suggestions before I dig into this? Thanks. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message