From patchwork Fri Feb 21 07:40:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 230817 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 216FEC35641 for ; Fri, 21 Feb 2020 08:29:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ECC1820679 for ; Fri, 21 Feb 2020 08:29:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582273758; bh=prr9loutUhzcxUyUY0QhUlgVNDxML2mvrs3HklSUOkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=iK3zah1z4NPR1kMSzQ6tGC+zyrsxC0Q5+9Eldzzf9rTU1zrnJI7COURHp8X0SxDjX X5HIsndb9v8BTtreWl6hHWIOh2tjAw0pYWHKIoUKnIqRCqabYFlaSusoKsoZvSIMRO /0k+pp/hfGAgnxt6LXBglw1tsg1zLH7ioxkpFNE0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387739AbgBUISG (ORCPT ); Fri, 21 Feb 2020 03:18:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:55868 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387494AbgBUISG (ORCPT ); Fri, 21 Feb 2020 03:18:06 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0D7FF24689; Fri, 21 Feb 2020 08:18:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582273085; bh=prr9loutUhzcxUyUY0QhUlgVNDxML2mvrs3HklSUOkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rHpqt7vDWCd58s2CSHZ5mVlTiizI94zHtwaz/p/UVACEDNXGhSrnjnJB2z5Q5/KEw tJC8Ng8AWGqdvVDD5EEi1N9VA7Wb+8/kern1xeKlMaV73g/3xCzMUl521/RAgo54I+ iJMSBdZ1MMP8uC2TdQ5L8X+nkGU57G8VvT8yO6WE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oliver OHalloran , Alexey Kardashevskiy , Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 040/191] powerpc/iov: Move VF pdev fixup into pcibios_fixup_iov() Date: Fri, 21 Feb 2020 08:40:13 +0100 Message-Id: <20200221072256.370855841@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200221072250.732482588@linuxfoundation.org> References: <20200221072250.732482588@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Oliver O'Halloran [ Upstream commit 965c94f309be58fbcc6c8d3e4f123376c5970d79 ] An ioda_pe for each VF is allocated in pnv_pci_sriov_enable() before the pci_dev for the VF is created. We need to set the pe->pdev pointer at some point after the pci_dev is created. Currently we do that in: pcibios_bus_add_device() pnv_pci_dma_dev_setup() (via phb->ops.dma_dev_setup) /* fixup is done here */ pnv_pci_ioda_dma_dev_setup() (via pnv_phb->dma_dev_setup) The fixup needs to be done before setting up DMA for for the VF's PE, but there's no real reason to delay it until this point. Move the fixup into pnv_pci_ioda_fixup_iov() so the ordering is: pcibios_add_device() pnv_pci_ioda_fixup_iov() (via ppc_md.pcibios_fixup_sriov) pcibios_bus_add_device() ... This isn't strictly required, but it's a slightly more logical place to do the fixup and it simplifies pnv_pci_dma_dev_setup(). Signed-off-by: Oliver O'Halloran Reviewed-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200110070207.439-4-oohall@gmail.com Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/pci-ioda.c | 29 +++++++++++++++++++---- arch/powerpc/platforms/powernv/pci.c | 14 ----------- 2 files changed, 25 insertions(+), 18 deletions(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 28adfe4dd04c5..ecd211c5f24a5 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -3015,9 +3015,6 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) struct pci_dn *pdn; int mul, total_vfs; - if (!pdev->is_physfn || pci_dev_is_added(pdev)) - return; - pdn = pci_get_pdn(pdev); pdn->vfs_expanded = 0; pdn->m64_single_mode = false; @@ -3092,6 +3089,30 @@ truncate_iov: res->end = res->start - 1; } } + +static void pnv_pci_ioda_fixup_iov(struct pci_dev *pdev) +{ + if (WARN_ON(pci_dev_is_added(pdev))) + return; + + if (pdev->is_virtfn) { + struct pnv_ioda_pe *pe = pnv_ioda_get_pe(pdev); + + /* + * VF PEs are single-device PEs so their pdev pointer needs to + * be set. The pdev doesn't exist when the PE is allocated (in + * (pcibios_sriov_enable()) so we fix it up here. + */ + pe->pdev = pdev; + WARN_ON(!(pe->flags & PNV_IODA_PE_VF)); + } else if (pdev->is_physfn) { + /* + * For PFs adjust their allocated IOV resources to match what + * the PHB can support using it's M64 BAR table. + */ + pnv_pci_ioda_fixup_iov_resources(pdev); + } +} #endif /* CONFIG_PCI_IOV */ static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe, @@ -3985,7 +4006,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, ppc_md.pcibios_default_alignment = pnv_pci_default_alignment; #ifdef CONFIG_PCI_IOV - ppc_md.pcibios_fixup_sriov = pnv_pci_ioda_fixup_iov_resources; + ppc_md.pcibios_fixup_sriov = pnv_pci_ioda_fixup_iov; ppc_md.pcibios_iov_resource_alignment = pnv_pci_iov_resource_alignment; ppc_md.pcibios_sriov_enable = pnv_pcibios_sriov_enable; ppc_md.pcibios_sriov_disable = pnv_pcibios_sriov_disable; diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index aa95b8e0f66ad..b6fa900af5da5 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -820,20 +820,6 @@ void pnv_pci_dma_dev_setup(struct pci_dev *pdev) { struct pci_controller *hose = pci_bus_to_host(pdev->bus); struct pnv_phb *phb = hose->private_data; -#ifdef CONFIG_PCI_IOV - struct pnv_ioda_pe *pe; - - /* Fix the VF pdn PE number */ - if (pdev->is_virtfn) { - list_for_each_entry(pe, &phb->ioda.pe_list, list) { - if (pe->rid == ((pdev->bus->number << 8) | - (pdev->devfn & 0xff))) { - pe->pdev = pdev; - break; - } - } - } -#endif /* CONFIG_PCI_IOV */ if (phb && phb->dma_dev_setup) phb->dma_dev_setup(phb, pdev);