From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752191AbdB0PQA (ORCPT ); Mon, 27 Feb 2017 10:16:00 -0500 Received: from foss.arm.com ([217.140.101.70]:54620 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751452AbdB0PP5 (ORCPT ); Mon, 27 Feb 2017 10:15:57 -0500 From: Lorenzo Pieralisi To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Lorenzo Pieralisi , Bjorn Helgaas , Thierry Reding Subject: [PATCH 18/20] PCI: tegra: update PCI config space remap function Date: Mon, 27 Feb 2017 15:14:29 +0000 Message-Id: <20170227151436.18698-19-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20170227151436.18698-1-lorenzo.pieralisi@arm.com> References: <20170227151436.18698-1-lorenzo.pieralisi@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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); -- 2.10.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: lorenzo.pieralisi@arm.com (Lorenzo Pieralisi) Date: Mon, 27 Feb 2017 15:14:29 +0000 Subject: [PATCH 18/20] PCI: tegra: update PCI config space remap function In-Reply-To: <20170227151436.18698-1-lorenzo.pieralisi@arm.com> References: <20170227151436.18698-1-lorenzo.pieralisi@arm.com> Message-ID: <20170227151436.18698-19-lorenzo.pieralisi@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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); -- 2.10.0