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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 2C3EBC2BA1B for ; Sat, 4 Apr 2020 07:31:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 01E7B20719 for ; Sat, 4 Apr 2020 07:31:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fdByrCaz"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="xmkfgME2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 01E7B20719 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=sfMW7bR/TySkqc3pt+7XSzbsLled9hh24kpJ8IAXMZA=; b=fdB yrCaz4BJYOtV/KLgQayypLRWBs787j/xSlaH/La4rI63lL66dyIX7owRG3Camwwwhgjakbc6feIOX ZIYmNY56Uy84TGF5o9HUuOTUGicPQm4K9LRIXibUKg3UiJ1uvlmKurLVvmwhDnPZp9PPA9nyo65uw DiV+Un5h1KPpSWpV6ulVV6EF3MwynHQGxJApiyqnqG1rTan5YPPHBjPpCevtZy1TOAYX608NW8lag bNWmlqL32a2Qt67GK6ANKmU5n6EnOoKXfUQKOusXVoNEk03Gu/9hSId3c2un9nneJ4P9anyrU+OLp XWhYt+vAk+s/kksHfrOVmq0ryy53Dmg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jKdGg-0004o8-KD; Sat, 04 Apr 2020 07:31:02 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jKdGe-0004nn-AD for linux-arm-kernel@lists.infradead.org; Sat, 04 Apr 2020 07:31:01 +0000 Received: from cam-smtp0.cambridge.arm.com (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7B057206B8; Sat, 4 Apr 2020 07:30:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585985459; bh=YwNzc3LPzS5Ne5jnpGLuUWb6+rpkRhuod22y6xQH6Ns=; h=From:To:Cc:Subject:Date:From; b=xmkfgME2VgYzepgggNgkR3Y8/eYJTjS7NiLFZaHFKXcIMLm5H8on+jNGaX2LXCMyc 7FDMPC5g2ttYbfDPLY2SMuFBunWoqpIejtXawOun6+tyAc67CEY0BHjts3JwgAxKWX eT9G5pgOtBJkU/mCYBSIdIQ8D4qpycerV3gtliCM= From: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] arm64: iort: take _DMA methods into account for named components Date: Sat, 4 Apr 2020 09:30:47 +0200 Message-Id: <20200404073047.17898-1-ardb@kernel.org> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200404_003100_377516_F2EB79B9 X-CRM114-Status: GOOD ( 11.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: catalin.marinas@arm.com, lorenzo.pieralisi@arm.com, will@kernel.org, robin.murphy@arm.com, Ard Biesheuvel MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Where IORT nodes for named components can describe simple DMA limits expressed as the number of address bits a device can driver, _DMA methods in AML can express more complex topologies, involving DMA translation in particular. Currently, we only take this _DMA method into account if it appears on a ACPI device node describing a PCIe root complex, but it is perfectly acceptable to attach them to named components as well, so let's ensure we take them into account in those cases too. Reported-by: Andrei Warkentin Fixes: 7ad4263980826e8b ("ACPI: Make acpi_dma_configure() DMA regions aware") Cc: # v4.14+ Signed-off-by: Ard Biesheuvel --- drivers/acpi/arm64/iort.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index ed3d2d1a7ae9..07eb78baf198 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1146,13 +1146,10 @@ void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *dma_size) else size = 1ULL << 32; - if (dev_is_pci(dev)) { - ret = acpi_dma_get_range(dev, &dmaaddr, &offset, &size); - if (ret == -ENODEV) - ret = rc_dma_get_range(dev, &size); - } else { - ret = nc_dma_get_range(dev, &size); - } + ret = acpi_dma_get_range(dev, &dmaaddr, &offset, &size); + if (ret == -ENODEV) + ret = dev_is_pci(dev) ? rc_dma_get_range(dev, &size) + : nc_dma_get_range(dev, &size); if (!ret) { /* -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel