From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp07.au.ibm.com (e23smtp07.au.ibm.com [202.81.31.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id E7F4D1A0CF3 for ; Mon, 22 Dec 2014 16:55:11 +1100 (AEDT) Received: from /spool/local by e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 22 Dec 2014 15:55:11 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 99ED23578064 for ; Mon, 22 Dec 2014 16:55:09 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id sBM5t9LY34472016 for ; Mon, 22 Dec 2014 16:55:09 +1100 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id sBM5t83Y021104 for ; Mon, 22 Dec 2014 16:55:09 +1100 From: Wei Yang To: bhelgaas@google.com, benh@au1.ibm.com, gwshan@linux.vnet.ibm.com Subject: [PATCH V10 14/17] powerpc/powernv: Shift VF resource with an offset Date: Mon, 22 Dec 2014 13:54:34 +0800 Message-Id: <1419227677-12312-15-git-send-email-weiyang@linux.vnet.ibm.com> In-Reply-To: <1419227677-12312-1-git-send-email-weiyang@linux.vnet.ibm.com> References: <1419227677-12312-1-git-send-email-weiyang@linux.vnet.ibm.com> Cc: linux-pci@vger.kernel.org, Wei Yang , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On PowrNV platform, resource position in M64 implies the PE# the resource belongs to. In some particular case, adjustment of a resource is necessary to locate it to a correct position in M64. This patch introduces a function to shift the 'real' PF IOV BAR address according to an offset. Signed-off-by: Wei Yang --- arch/powerpc/platforms/powernv/pci-ioda.c | 31 +++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 512dc48..f5aa1ef 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -749,6 +750,36 @@ static unsigned int pnv_ioda_dma_weight(struct pci_dev *dev) return 10; } +#ifdef CONFIG_PCI_IOV +static void pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) +{ + struct pci_dn *pdn = pci_get_pdn(dev); + int i; + struct resource *res; + resource_size_t size; + + if (!dev->is_physfn) + return; + + for (i = PCI_IOV_RESOURCES; i <= PCI_IOV_RESOURCE_END; i++) { + res = &dev->resource[i]; + if (!res->flags || !res->parent) + continue; + + if (!pnv_pci_is_mem_pref_64(res->flags)) + continue; + + dev_info(&dev->dev, " Shifting VF BAR %pR to\n", res); + size = pci_iov_resource_size(dev, i); + res->start += size*offset; + + dev_info(&dev->dev, " %pR\n", res); + pci_update_resource(dev, i); + } + pdn->max_vfs -= offset; +} +#endif /* CONFIG_PCI_IOV */ + #if 0 static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) { -- 1.7.9.5