From patchwork Wed Apr 19 16:49:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 9688131 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5A2F0602C9 for ; Wed, 19 Apr 2017 16:51:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4A6A42018F for ; Wed, 19 Apr 2017 16:51:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3F1F12842E; Wed, 19 Apr 2017 16:51:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CFA7D2018F for ; Wed, 19 Apr 2017 16:51:40 +0000 (UTC) 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:References: In-Reply-To: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:List-Owner; bh=v3CNnrZePzQBv4uMnp0XA/Tz9Ut9rfnwUs4V+d2Z24k=; b=mGhU1Kny4JFtDj85diUTGulJV7 gCULEmxCo2q8DIGvrxEqwecxEUOPtfRBEDgzb5vOdBMx3+8+QSbMxoMd/e4D3ztsSgu7h4zN9rnyj Tm9MELS4IFBmGlfbXuhrE/6QGdu6zpH0hMSyW95gXUSZL1x2nC44gRuh38R3cSp+97wy3nFAL5Utu czoZi5DAXvElwzbj6Ev2hOoC4WqMSf+LUcltoVO4KjDBMjVRBY1xCCgImAaUNvgUa106F4wU+J5Mz PiLVdBak1TgqckpHnPB66ooWOuQWvo01w4T5z2rYqKq0JB7G7aLUEkeqYbpZXBQOO6VpF4EG63yrK C30o9BnQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1d0spP-0003at-SP; Wed, 19 Apr 2017 16:51:39 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1d0snv-0000Oa-HE for linux-arm-kernel@lists.infradead.org; Wed, 19 Apr 2017 16:50:22 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0B9BB1B33; Wed, 19 Apr 2017 09:49:45 -0700 (PDT) Received: from red-moon.cambridge.arm.com (red-moon.cambridge.arm.com [10.1.206.55]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 081793F4FF; Wed, 19 Apr 2017 09:49:43 -0700 (PDT) From: Lorenzo Pieralisi To: linux-pci@vger.kernel.org Subject: [PATCH v4 17/21] PCI: tegra: update PCI config space remap function Date: Wed, 19 Apr 2017 17:49:06 +0100 Message-Id: <20170419164913.19674-18-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20170419164913.19674-1-lorenzo.pieralisi@arm.com> References: <20170419164913.19674-1-lorenzo.pieralisi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170419_095008_081844_B3BF265D X-CRM114-Status: GOOD ( 10.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bjorn Helgaas , Lorenzo Pieralisi , Thierry Reding , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP PCI configuration space should be mapped with a memory region type that generates on the CPU host bus non-posted write transations. Update the driver to use correct memory mapping attributes to map config space regions to enforce configuration space non-posted writes behaviour. Signed-off-by: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Thierry Reding --- drivers/pci/host/pci-tegra.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index ed8a93f..2618f87 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -380,7 +380,7 @@ static struct tegra_pcie_bus *tegra_pcie_bus_alloc(struct tegra_pcie *pcie, unsigned int busnr) { struct device *dev = pcie->dev; - pgprot_t prot = pgprot_device(PAGE_KERNEL); + pgprot_t prot = pgprot_noncached(PAGE_KERNEL); phys_addr_t cs = pcie->cs->start; struct tegra_pcie_bus *bus; unsigned int i; @@ -1962,7 +1962,7 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie) rp->pcie = pcie; rp->np = port; - rp->base = devm_ioremap_resource(dev, &rp->regs); + rp->base = devm_pci_remap_cfg_resource(dev, &rp->regs); if (IS_ERR(rp->base)) return PTR_ERR(rp->base);