From owner-freebsd-current@FreeBSD.ORG Wed Mar 4 15:14:51 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BF5C7106566B for ; Wed, 4 Mar 2009 15:14:51 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 8F5E78FC1B for ; Wed, 4 Mar 2009 15:14:51 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (pool-98-109-39-197.nwrknj.fios.verizon.net [98.109.39.197]) by cyrus.watson.org (Postfix) with ESMTPSA id 21D2346B23; Wed, 4 Mar 2009 10:14:51 -0500 (EST) Received: from localhost (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.14.3/8.14.3) with ESMTP id n24FEMgR095815; Wed, 4 Mar 2009 10:14:45 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-current@freebsd.org Date: Wed, 4 Mar 2009 10:11:24 -0500 User-Agent: KMail/1.9.7 References: <49ADE16C.9030805@protected-networks.net> In-Reply-To: <49ADE16C.9030805@protected-networks.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200903041011.24606.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Wed, 04 Mar 2009 10:14:45 -0500 (EST) X-Virus-Scanned: ClamAV 0.94.2/9067/Wed Mar 4 05:06:09 2009 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Michael Butler Subject: Re: pci regression: "panic: resource_list_alloc: resource entry is busy" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Mar 2009 15:14:52 -0000 On Tuesday 03 March 2009 9:03:24 pm Michael Butler wrote: > Post SVN rev 189306 on my Toshiba laptop, I get a bootstrap panic as > follows: > > vgapci0: port 0x1800-0x1807 > mem 0xf0a00000-0xf0a7ffff,0xd0000000-0xdfffffff, > 0xf0b00000-0xf0b3ffff > irq 16 at device 2.0 on pci0 > acpi_video0: on vgapci0 > found VGA CRT or VESA Compatible Analog Monitor(100), idx#0, > port#0, detectable by BIOS, head #0 > found TV/HDTV or Analog-Video Monitor(200), idx#0, > port#0, detectable by BIOS, head #0 > found Internal/Integrated Digital Flat Panel(400), idx#0, > port#0, detectable by BIOS, head #0 > agp0: on vgapci0 > vgapci0: Reserved 0x10000000 bytes for rid 0x18 type 3 at 0xd0000000 > vgapci0: Reserved 0x80000 bytes for rid 0x10 type 3 at 0xf0a00000 > vgapci0: Reserved 0x40000 bytes for rid 0x1c type 3 at 0xf0b00000 > agp0: detected 7932k stolen memory > agp0: aperture size is 256M > drm0: on vgapci0 > > <<< fails here with "panic: resource_list_alloc: resource entry is busy" > > vgapci0: Reserved 0x80000 bytes for rid 0x10 type 3 at 0xf0a00000 > vgapci0: child drm0 requested pci_enable_busmaster > info: [drm] AGP at 0xd0000000 256MB > info: [drm] Initialized i915 1.6.0 20080730 > vgapci1: mem 0xf0a80000-0xf0afffff at > device 2.1 on pci0 > > Presumably, the agp/drm interaction with vgapci resources prompts this :-( Hmmm, so the issue is that agp0 and drm0 are both allocating the same BAR. I can probably make this work with some patches to vgapci to have it proxy the requests and share the resources. -- John Baldwin