Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753750AbbFZO0q (ORCPT ); Fri, 26 Jun 2015 10:26:46 -0400 Received: from mail-wi0-f180.google.com ([209.85.212.180]:34305 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753725AbbFZO0m (ORCPT ); Fri, 26 Jun 2015 10:26:42 -0400 MIME-Version: 1.0 In-Reply-To: <1435280756-24455-1-git-send-email-dhdang@apm.com> References: <1435280756-24455-1-git-send-email-dhdang@apm.com> From: Bjorn Helgaas Date: Fri, 26 Jun 2015 09:26:21 -0500 Message-ID: Subject: Re: [PATCH 1/1] pci: xgene: Enable huge outbound bar support To: Duc Dang Cc: Catalin Marinas , Ian Campbell , Pawel Moll , Rob Herring , Mark Rutland , Kumar Gala , Will Deacon , "David S. Miller" , "devicetree@vger.kernel.org" , "linux-pci@vger.kernel.org" , linux-arm , "linux-kernel@vger.kernel.org" , Tanmay Inamdar , patches Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 988 Lines: 24 Hi Duc, On Thu, Jun 25, 2015 at 8:05 PM, Duc Dang wrote: > X-Gene PCIe controllers support huge outbound BARs (with size upto > 64GB). This patch configures additional 1 outbound BAR for X-Gene > PCIe controllers with size larger than 4GB. This is required to > support devices that request huge outbound memory (nVidia K40 as an > example) The PCI specs don't use the "outbound BAR" terminology. I assume this is what we normally call "windows" or "apertures" for MMIO access by the CPU? (The specs rarely use those terms either, but they're commonly used in Linux, and the PCIe spec does mention them a couple times.) By "request huge outbound memory," I assume you simply mean the device has a huge BAR, right? Bjorn -- 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/