From patchwork Tue Jul 17 21:39:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Derrick X-Patchwork-Id: 945373 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41VYfY6Tl3z9s21 for ; Wed, 18 Jul 2018 07:42:45 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731234AbeGQWRI (ORCPT ); Tue, 17 Jul 2018 18:17:08 -0400 Received: from mga06.intel.com ([134.134.136.31]:41011 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731151AbeGQWRI (ORCPT ); Tue, 17 Jul 2018 18:17:08 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2018 14:42:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,367,1526367600"; d="scan'208";a="58456042" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.117.43]) by orsmga006.jf.intel.com with ESMTP; 17 Jul 2018 14:42:31 -0700 From: Jon Derrick To: Bjorn Helgaas Cc: , , , Lorenzo Pieralisi , Keith Busch , Greg Kroah-Hartman , Mika Westerberg , Sinan Kaya , Logan Gunthorpe , Stephen Bates , Jon Derrick Subject: [RFC 3/3] docs: Document the expanded hp{io,mem}size interface Date: Tue, 17 Jul 2018 15:39:47 -0600 Message-Id: <1531863587-3723-4-git-send-email-jonathan.derrick@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1531863587-3723-1-git-send-email-jonathan.derrick@intel.com> References: <1531863587-3723-1-git-send-email-jonathan.derrick@intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The expanded interface allows specifying sizes on a per-device/per-bus path granularity. Signed-off-by: Jon Derrick --- Documentation/admin-guide/kernel-parameters.txt | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 533ff5c..8e4c129 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3142,11 +3142,24 @@ the default. off: Turn ECRC off on: Turn ECRC on. - hpiosize=nn[KMG] The fixed amount of bus space which is - reserved for hotplug bridge's IO window. + hpiosize= + Format: + + @][:][:.][; ...] + @]pci::\ + [::][; ...] + The fixed amount of bus space which is reserved + for the matching hotplug bridge(s)'s IO window. Default size is 256 bytes. - hpmemsize=nn[KMG] The fixed amount of bus space which is - reserved for hotplug bridge's memory window. + hpmemsize= + Format: + [P] + [P]@][:][:.][; ...] + [P]@]pci::\ + [::][; ...] + The fixed amount of bus space which is reserved + for the matching hotplug bridge(s)'s memory window. + 'P' specifies prefetchable. Default size is 2 megabytes. hpbussize=nn The minimum amount of additional bus numbers reserved for buses below a hotplug bridge.