From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3zQmNb4pb8zDqy7 for ; Tue, 23 Jan 2018 22:31:59 +1100 (AEDT) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w0NBV0kS109910 for ; Tue, 23 Jan 2018 06:31:57 -0500 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0a-001b2d01.pphosted.com with ESMTP id 2fp24en9p8-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 23 Jan 2018 06:31:57 -0500 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 23 Jan 2018 11:31:54 -0000 From: Frederic Barrat To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: arnd@arndb.de, gregkh@linuxfoundation.org, mpe@ellerman.id.au, andrew.donnellan@au1.ibm.com, alastair@au1.ibm.com Subject: [PATCH v2 02/13] powerpc/powernv: Set correct configuration space size for opencapi devices Date: Tue, 23 Jan 2018 12:31:37 +0100 In-Reply-To: <20180123113148.6024-1-fbarrat@linux.vnet.ibm.com> References: <20180123113148.6024-1-fbarrat@linux.vnet.ibm.com> Message-Id: <20180123113148.6024-3-fbarrat@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Andrew Donnellan The configuration space for opencapi devices doesn't have a PCI Express capability, therefore confusing linux in thinking it's of an old PCI type with a 256-byte configuration space size, instead of the desired 4k. So add a PCI fixup to declare the correct size. Signed-off-by: Andrew Donnellan Signed-off-by: Frederic Barrat --- arch/powerpc/platforms/powernv/pci-ioda.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index e780263a14ee..d5af700820f3 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -4080,6 +4080,19 @@ void __init pnv_pci_init_npu2_opencapi_phb(struct device_node *np) pnv_pci_init_ioda_phb(np, 0, PNV_PHB_NPU_OCAPI); } +static void pnv_npu2_opencapi_cfg_size_fixup(struct pci_dev *dev) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + + if (!machine_is(powernv)) + return; + + if (phb->type == PNV_PHB_NPU_OCAPI) + dev->cfg_size = PCI_CFG_SPACE_EXP_SIZE; +} +DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, pnv_npu2_opencapi_cfg_size_fixup); + void __init pnv_pci_init_ioda_hub(struct device_node *np) { struct device_node *phbn; -- 2.14.1