From patchwork Tue Feb 12 16:28:45 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Petazzoni X-Patchwork-Id: 219889 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 53DE82C0084 for ; Wed, 13 Feb 2013 03:29:47 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933366Ab3BLQ3e (ORCPT ); Tue, 12 Feb 2013 11:29:34 -0500 Received: from mail.free-electrons.com ([94.23.35.102]:45832 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933295Ab3BLQ3a (ORCPT ); Tue, 12 Feb 2013 11:29:30 -0500 Received: by mail.free-electrons.com (Postfix, from userid 106) id D4F0484F; Tue, 12 Feb 2013 17:29:29 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT shortcircuit=ham autolearn=disabled version=3.3.2 Received: from localhost (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 41E35825; Tue, 12 Feb 2013 17:29:29 +0100 (CET) From: Thomas Petazzoni To: Bjorn Helgaas , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Lior Amsalem , Andrew Lunn , Russell King - ARM Linux , Jason Cooper , Arnd Bergmann , Stephen Warren , Thierry Reding , Eran Ben-Avi , Nadav Haklai , Maen Suleiman , Shadi Ammouri , Gregory Clement , Jason Gunthorpe , Tawfik Bayouk Subject: [PATCH 11/32] arm: plat-orion: refactor the orion_disable_wins() function Date: Tue, 12 Feb 2013 17:28:45 +0100 Message-Id: <1360686546-24277-12-git-send-email-thomas.petazzoni@free-electrons.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1360686546-24277-1-git-send-email-thomas.petazzoni@free-electrons.com> References: <1360686546-24277-1-git-send-email-thomas.petazzoni@free-electrons.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org In the address decoding code, the orion_disable_wins() function is used at boot time to disable all address decoding windows, before configuring only the ones that are needed. This allows to make sure that no configuration is left from the bootloader. As a preparation for the introduction of address decoding window allocation/deallocation function, we refactor this function into an orion_disable_cpu_win() which disables a single window. The orion_config_wins() function is changed to call orion_disable_cpu_win() in a loop, to preserve an identical behavior. Signed-off-by: Thomas Petazzoni --- arch/arm/plat-orion/addr-map.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) diff --git a/arch/arm/plat-orion/addr-map.c b/arch/arm/plat-orion/addr-map.c index 4dec3db..dd98638 100644 --- a/arch/arm/plat-orion/addr-map.c +++ b/arch/arm/plat-orion/addr-map.c @@ -95,6 +95,19 @@ void __init orion_setup_cpu_win(const struct orion_addr_map_cfg *cfg, } } +static void __init orion_disable_cpu_win(const struct orion_addr_map_cfg *cfg, + const int win) +{ + void __iomem *addr = cfg->win_cfg_base(cfg, win); + + writel(0, addr + WIN_BASE_OFF); + writel(0, addr + WIN_CTRL_OFF); + if (cfg->cpu_win_can_remap(cfg, win)) { + writel(0, addr + WIN_REMAP_LO_OFF); + writel(0, addr + WIN_REMAP_HI_OFF); + } +} + /* * Configure a number of windows. */ @@ -108,36 +121,22 @@ static void __init orion_setup_cpu_wins(const struct orion_addr_map_cfg * cfg, } } -static void __init orion_disable_wins(const struct orion_addr_map_cfg * cfg) -{ - void __iomem *addr; - int i; - - for (i = 0; i < cfg->num_wins; i++) { - addr = cfg->win_cfg_base(cfg, i); - - writel(0, addr + WIN_BASE_OFF); - writel(0, addr + WIN_CTRL_OFF); - if (cfg->cpu_win_can_remap(cfg, i)) { - writel(0, addr + WIN_REMAP_LO_OFF); - writel(0, addr + WIN_REMAP_HI_OFF); - } - } -} - /* * Disable, clear and configure windows. */ void __init orion_config_wins(struct orion_addr_map_cfg * cfg, const struct orion_addr_map_info *info) { + int win; + if (!cfg->cpu_win_can_remap) cfg->cpu_win_can_remap = orion_cpu_win_can_remap; if (!cfg->win_cfg_base) cfg->win_cfg_base = orion_win_cfg_base; - orion_disable_wins(cfg); + for (win = 0; win < cfg->num_wins; win++) + orion_disable_cpu_win(cfg, win); if (info) orion_setup_cpu_wins(cfg, info);