Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756356Ab3FQOCo (ORCPT ); Mon, 17 Jun 2013 10:02:44 -0400 Received: from mail-out.m-online.net ([212.18.0.10]:52496 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755716Ab3FQOCn (ORCPT ); Mon, 17 Jun 2013 10:02:43 -0400 From: Rojhalat Ibrahim To: Scott Wood Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Michael Guntsche Subject: [PATCH v3] powerpc/pci: Fix setup of Freescale PCI / PCIe controllers Date: Mon, 17 Jun 2013 16:02:41 +0200 Message-ID: <7498229.szaOTnNpbV@pcimr> User-Agent: KMail/4.10.3 (Linux/3.4.26; KDE/4.10.3; x86_64; ; ) MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3004 Lines: 83 Commit 50d8f87d2b3 (powerpc/fsl-pci Make PCIe hotplug work with Freescale PCIe controllers) does not handle non-PCIe controllers properly, which causes a panic during boot for certain configurations. This patch fixes the issue by calling setup_indirect_pci for all device types. fsl_indirect_read_config is now only used for booke/86xx PCIe controllers. Reported-by: Michael Guntsche Cc: Scott Wood Signed-off-by: Rojhalat Ibrahim --- v3: Fix compile error arch/powerpc/sysdev/fsl_pci.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 028ac1f..46ac1dd 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -97,22 +97,14 @@ static int fsl_indirect_read_config(struct pci_bus *bus, unsigned int devfn, return indirect_read_config(bus, devfn, offset, len, val); } -static struct pci_ops fsl_indirect_pci_ops = +#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) + +static struct pci_ops fsl_indirect_pcie_ops = { .read = fsl_indirect_read_config, .write = indirect_write_config, }; -static void __init fsl_setup_indirect_pci(struct pci_controller* hose, - resource_size_t cfg_addr, - resource_size_t cfg_data, u32 flags) -{ - setup_indirect_pci(hose, cfg_addr, cfg_data, flags); - hose->ops = &fsl_indirect_pci_ops; -} - -#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) - #define MAX_PHYS_ADDR_BITS 40 static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS; @@ -504,13 +496,15 @@ int __init fsl_add_bridge(struct platform_device *pdev, int is_primary) if (!hose->private_data) goto no_bridge; - fsl_setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, - PPC_INDIRECT_TYPE_BIG_ENDIAN); + setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, + PPC_INDIRECT_TYPE_BIG_ENDIAN); if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { + /* use fsl_indirect_read_config for PCIe */ + hose->ops = &fsl_indirect_pcie_ops; /* For PCIE read HEADER_TYPE to identify controler mode */ early_read_config_byte(hose, 0, 0, PCI_HEADER_TYPE, &hdr_type); if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) @@ -814,8 +808,8 @@ int __init mpc83xx_add_bridge(struct device_node *dev) if (ret) goto err0; } else { - fsl_setup_indirect_pci(hose, rsrc_cfg.start, - rsrc_cfg.start + 4, 0); + setup_indirect_pci(hose, rsrc_cfg.start, + rsrc_cfg.start + 4, 0); } printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/