From patchwork Thu Mar 14 17:45:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Kannebley Tavares X-Patchwork-Id: 2272881 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 5C652DFB79 for ; Thu, 14 Mar 2013 17:46:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4360BE684C for ; Thu, 14 Mar 2013 10:46:14 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from e24smtp03.br.ibm.com (e24smtp03.br.ibm.com [32.104.18.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 174A7E5D51 for ; Thu, 14 Mar 2013 10:46:00 -0700 (PDT) Received: from /spool/local by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 14 Mar 2013 14:45:57 -0300 Received: from d24dlp01.br.ibm.com (9.18.248.204) by e24smtp03.br.ibm.com (10.172.0.139) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 14 Mar 2013 14:45:56 -0300 Received: from d24relay01.br.ibm.com (d24relay01.br.ibm.com [9.8.31.16]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 3446D3520064 for ; Thu, 14 Mar 2013 13:45:56 -0400 (EDT) Received: from d24av01.br.ibm.com (d24av01.br.ibm.com [9.8.31.91]) by d24relay01.br.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2EHhoK51589276 for ; Thu, 14 Mar 2013 14:43:50 -0300 Received: from d24av01.br.ibm.com (loopback [127.0.0.1]) by d24av01.br.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2EHjt9w013439 for ; Thu, 14 Mar 2013 14:45:55 -0300 Received: from oc4135502304.ibm.com.com (dhcp-9-18-235-37.br.ibm.com [9.18.235.37]) by d24av01.br.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r2EHjsIa013427; Thu, 14 Mar 2013 14:45:55 -0300 From: lucaskt@linux.vnet.ibm.com To: dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] ppc64: Add arch-specific pcie_get_speed_cap_mask Date: Thu, 14 Mar 2013 14:45:47 -0300 Message-Id: <1363283147-8852-3-git-send-email-lucaskt@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1363283147-8852-1-git-send-email-lucaskt@linux.vnet.ibm.com> References: <1363283147-8852-1-git-send-email-lucaskt@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13031417-9254-0000-0000-00000BE91D3E Cc: linux-pci@vger.kernel.org, brking@linux.vnet.ibm.com, cascardo@linux.vnet.ibm.com, Alex Deucher , Bjorn Helgaas X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org From: Lucas Kannebley Tavares Betters support for gen2 speed detections on PCI buses on ppc64 architectures. Signed-off-by: Lucas Kannebley Tavares --- arch/powerpc/platforms/pseries/pci.c | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 0b580f4..58469fe 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -108,3 +109,34 @@ static void fixup_winbond_82c105(struct pci_dev* dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105, fixup_winbond_82c105); + +int pcibios_get_speed_cap_mask(struct pci_dev *dev, u32 *mask) +{ + struct device_node *dn, *pdn; + const uint32_t *pcie_link_speed_stats = NULL; + + *mask = 0; + dn = pci_bus_to_OF_node(dev->bus); + + /* Find nearest ibm,pcie-link-speed-stats, walking up the device tree */ + for (pdn = dn; pdn != NULL; pdn = pdn->parent) { + pcie_link_speed_stats = (const uint32_t *) of_get_property(pdn, + "ibm,pcie-link-speed-stats", NULL); + if (pcie_link_speed_stats != NULL) + break; + } + + if (pcie_link_speed_stats == NULL) { + dev_info(&dev->dev, "no ibm,pcie-link-speed-stats property\n"); + return -EINVAL; + } + + switch (pcie_link_speed_stats[0]) { + case 0x02: + *mask |= PCIE_SPEED_50; + case 0x01: + *mask |= PCIE_SPEED_25; + } + + return 0; +}