From owner-freebsd-hackers@FreeBSD.ORG Tue Apr 8 20:13:14 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 6F4A78D4 for ; Tue, 8 Apr 2014 20:13:14 +0000 (UTC) Received: from mail-ob0-x234.google.com (mail-ob0-x234.google.com [IPv6:2607:f8b0:4003:c01::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3D25D1DBF for ; Tue, 8 Apr 2014 20:13:14 +0000 (UTC) Received: by mail-ob0-f180.google.com with SMTP id wn1so1584432obc.25 for ; Tue, 08 Apr 2014 13:13:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=N6mQ+CAc6Jm2VvWIP1ehs/IqbzrjB1l5f6n4xrmHCAo=; b=Va4l4z0VzH9zSFzsvwQb+u/A1QBiFIMGLkN0JvaS1qnBymc8MuE9ifFAY0QLnEuPVk uG6hVHtWeUzkZ+Vbnb5rLiLYG1LiNyrRb7HMQOEtm1EX0F4BCf05y/A+NBKDf6ExK2Eo 03mudU/ySavLbv9khZj+0A+xpBmBIpYVp3J3rqANL0RFNGVGHMlvsNoj4M6n5p19eMZr ih5gck4WHdNv8oKGSfoUtpv0kzOpMUijB0GfWl+OfVGE64pbfwJksSgS+n8W+fnBs5E+ sROeVGYP2nbfkxgtWxT0wBRYm3VCAlQ5atsy6TmX8zqCdompyYTbb5azglVfgSBJW08I H7Mw== MIME-Version: 1.0 X-Received: by 10.60.40.39 with SMTP id u7mr5062442oek.56.1396987993558; Tue, 08 Apr 2014 13:13:13 -0700 (PDT) Received: by 10.76.87.7 with HTTP; Tue, 8 Apr 2014 13:13:13 -0700 (PDT) Date: Tue, 8 Apr 2014 16:13:13 -0400 Message-ID: Subject: Overlapping MSI-X table and PBA From: Ryan Stone To: "freebsd-hackers@freebsd.org" Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2014 20:13:14 -0000 I have a (prototype) PCIe device that shows the following in pciconf -lc: cap 11[70] = MSI-X supports 5 messages Table in map 0x1c[0x0], PBA in map 0x1c[0x0] This is completely bogus, right? I don't see how the MSI-X table can't occupy the same offset in the same BAR as the PBA (certainly the datasheet for this device says that they should have different offsets).