From owner-freebsd-bugs@freebsd.org Wed Jan 8 13:37:45 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 222ED1EEFF6 for ; Wed, 8 Jan 2020 13:37:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 47t9Kj0C4Xz4VbX for ; Wed, 8 Jan 2020 13:37:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 050561EEFF5; Wed, 8 Jan 2020 13:37:45 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 04C901EEFF4 for ; Wed, 8 Jan 2020 13:37:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47t9Kh6QfLz4VbW for ; Wed, 8 Jan 2020 13:37:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D806818BBD for ; Wed, 8 Jan 2020 13:37:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 008Dbin4090967 for ; Wed, 8 Jan 2020 13:37:44 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 008DbiFm090966 for bugs@FreeBSD.org; Wed, 8 Jan 2020 13:37:44 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 204521] [new driver] [request] Port rtsx from OpenBSD to FreeBSD Date: Wed, 08 Jan 2020 13:37:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: feature, patch X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: gljennjohn@gmail.com X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Jan 2020 13:37:45 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204521 --- Comment #34 from Gary Jennejohn --- I reimplemented rtsx_xfer_bounce() so that it's pretty much one-to-one the = same as the way OpenBSD does it. But now the transfer always times out. The DMA addresses returned by the kernel all look good and are within the 32-bit ra= nge. If anyone is interested I can attach my code. It's full of ifdef's and tra= ce output. Maybe other eyes can see what I can't. I've looked at the code so much that I may be blind to any errors. Comparing OpenBSD with the code I'm using doesn't reveal any obvious errors= .=20 The DMA setup for using bounce buffers appears to be the same and the steps preceeding the DMA transfer also seem identical. I'm at a loss to explain why DMA in FreeBSD does not work. What I haven't yet tried is to do the DMA setup like dwmmc.c does it. Guess I'll try that next. --=20 You are receiving this mail because: You are the assignee for the bug.=