From patchwork Thu Dec 18 22:07:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 5516231 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 08B689F54F for ; Thu, 18 Dec 2014 22:07:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2DCB62034B for ; Thu, 18 Dec 2014 22:07:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3FC85203C3 for ; Thu, 18 Dec 2014 22:07:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751125AbaLRWHg (ORCPT ); Thu, 18 Dec 2014 17:07:36 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:43073 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751477AbaLRWHe (ORCPT ); Thu, 18 Dec 2014 17:07:34 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id sBIM74hS014230; Thu, 18 Dec 2014 16:07:04 -0600 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id sBIM74E5006954; Thu, 18 Dec 2014 16:07:04 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Thu, 18 Dec 2014 16:07:03 -0600 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id sBIM729Q009182; Thu, 18 Dec 2014 16:07:03 -0600 From: Murali Karicheri To: , , , , , , , CC: Murali Karicheri Subject: [RFC v1 PATCH 2/2] PCI: update dma configuration from DT Date: Thu, 18 Dec 2014 17:07:05 -0500 Message-ID: <1418940425-2017-3-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1418940425-2017-1-git-send-email-m-karicheri2@ti.com> References: <1418940425-2017-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP if there is a DT node available for the root bridge's parent device, use the dma configuration from that device node. For example, keystone PCI devices would require dma_pfn_offset to be set correctly in the device structure of the pci device in order to have the correct dma mask. The DT node will have dma-ranges defined for this. This also support using the DT property dma-coherent to allow coherent DMA operation by the PCI device. Signed-off-by: Murali Karicheri --- drivers/pci/probe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 23212f8..d7dcd6c 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -1520,6 +1521,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) dev->dev.dma_mask = &dev->dma_mask; dev->dev.dma_parms = &dev->dma_parms; dev->dev.coherent_dma_mask = 0xffffffffull; + of_pci_dma_configure(dev); pci_set_dma_max_seg_size(dev, 65536); pci_set_dma_seg_boundary(dev, 0xffffffff);