From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3F2CC31E40 for ; Tue, 6 Aug 2019 09:40:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D612E2147A for ; Tue, 6 Aug 2019 09:40:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732543AbfHFJk6 (ORCPT ); Tue, 6 Aug 2019 05:40:58 -0400 Received: from mga01.intel.com ([192.55.52.88]:49741 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732262AbfHFJk6 (ORCPT ); Tue, 6 Aug 2019 05:40:58 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Aug 2019 02:40:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,353,1559545200"; d="scan'208";a="202756367" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga002.fm.intel.com with ESMTP; 06 Aug 2019 02:40:56 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 7E879FF; Tue, 6 Aug 2019 12:40:55 +0300 (EEST) From: Andy Shevchenko To: Vinod Koul , dmaengine@vger.kernel.org, Viresh Kumar Cc: Andy Shevchenko Subject: [PATCH v1 01/12] dmaengine: acpi: Set up DMA mask based on CSRT Date: Tue, 6 Aug 2019 12:40:43 +0300 Message-Id: <20190806094054.64871-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org CSRT has an information about address width, which is supported by the certain DMA controller. Use information from CSRT to set up DMA mask for shared controller. Signed-off-by: Andy Shevchenko --- drivers/dma/acpi-dma.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index 30243f5c0710..4d66ee059808 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -10,6 +10,7 @@ */ #include +#include #include #include #include @@ -82,6 +83,12 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, if (si->base_request_line == 0 && si->num_handshake_signals == 0) return 0; + /* Set up DMA mask based on value from CSRT */ + ret = dma_coerce_mask_and_coherent(&adev->dev, + DMA_BIT_MASK(si->dma_address_width)); + if (ret) + return 0; + adma->base_request_line = si->base_request_line; adma->end_request_line = si->base_request_line + si->num_handshake_signals - 1; -- 2.20.1