From patchwork Wed Oct 1 02:09:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Herrenschmidt X-Patchwork-Id: 395386 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id A7489140218 for ; Wed, 1 Oct 2014 12:33:52 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750954AbaJACdv (ORCPT ); Tue, 30 Sep 2014 22:33:51 -0400 Received: from gate.crashing.org ([63.228.1.57]:45879 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750833AbaJACdv (ORCPT ); Tue, 30 Sep 2014 22:33:51 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.13.8) with ESMTP id s9129rqx007551; Tue, 30 Sep 2014 21:09:54 -0500 Message-ID: <1412129393.4285.195.camel@pasglop> Subject: [PATCH 4/4] sounds/hda/radeon: Disable 64-bit DMA on radeon From: Benjamin Herrenschmidt To: Alex Deucher , Bjorn Helgaas Cc: Dave Airlie , Brian King , Takashi Iwai , linux-pci@vger.kernel.org, Yijing Wang , Anton Blanchard , linuxppc-dev@ozlabs.org Date: Wed, 01 Oct 2014 12:09:53 +1000 X-Mailer: Evolution 3.12.2 Mime-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The chipset has a limitation in the number of address bits it can generate. The graphics portion uses a specific mask of 40 or 48 bits depending on the generation. For audio, it's a bit less of an issue, so just mark them as no-64bit for now. Without this, it crashes on POWER machines which can use high bits in the DMA address to distinguish between DMA windows. Signed-off-by: Benjamin Herrenschmidt CC: --- sound/pci/hda/hda_intel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 3e6d22d..2b679d5 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -297,7 +297,7 @@ enum { /* quirks for ATI/AMD HDMI */ #define AZX_DCAPS_PRESET_ATI_HDMI \ (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB|\ - AZX_DCAPS_NO_MSI64) + AZX_DCAPS_NO_MSI64 | AZX_DCAPS_NO_64BIT) /* quirks for Nvidia */ #define AZX_DCAPS_PRESET_NVIDIA \