From patchwork Thu Sep 15 05:37:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 9332819 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6AB53607FD for ; Thu, 15 Sep 2016 05:37:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 597C929240 for ; Thu, 15 Sep 2016 05:37:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 48D2329238; Thu, 15 Sep 2016 05:37:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7BBDA29238 for ; Thu, 15 Sep 2016 05:37:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756147AbcIOFhp (ORCPT ); Thu, 15 Sep 2016 01:37:45 -0400 Received: from mx2.mailbox.org ([80.241.60.215]:45197 "EHLO mx2.mailbox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755261AbcIOFho (ORCPT ); Thu, 15 Sep 2016 01:37:44 -0400 Received: from smtp1.mailbox.org (smtp1.mailbox.org [80.241.60.240]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx2.mailbox.org (Postfix) with ESMTPS id 7A9C743130; Thu, 15 Sep 2016 07:37:42 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp1.mailbox.org ([80.241.60.240]) by hefe.heinlein-support.de (hefe.heinlein-support.de [91.198.250.172]) (amavisd-new, port 10030) with ESMTP id b8QpLyoK3a_v; Thu, 15 Sep 2016 07:37:35 +0200 (CEST) From: Stefan Roese To: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Gregory CLEMENT , Thomas Petazzoni , Marcin Wojtas , Arnd Bergmann , Andrew Lunn , Vinod Koul Subject: [PATCH 1/2 v3] bus: mvebu-mbus: Provide stub function for mvebu_mbus_get_io_win_info() Date: Thu, 15 Sep 2016 07:37:30 +0200 Message-Id: <20160915053731.25263-1-sr@denx.de> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch provides a stub function for mvebu_mbus_get_io_win_info(), which will be used for all non-Orion (ARM32 MVEBU) platforms for compile test coverage. On such platforms this function will return an error so that drivers might detect a potential problem. Signed-off-by: Stefan Roese Cc: Gregory CLEMENT Cc: Thomas Petazzoni Cc: Marcin Wojtas Cc: Arnd Bergmann Cc: Andrew Lunn Cc: Vinod Koul --- v3: - Include errno.h to fix the compile breakage on ARM64 - Change comment as suggested by Andrew - Added Andrew to Cc v2: - Return error code in stub function. This may be useful on Armada 3700 boards. As Armada 3700 does not implement the MBus driver but some device driver might call into these functions anyways (e.g. mvneta). include/linux/mbus.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/include/linux/mbus.h b/include/linux/mbus.h index d610232..2931aa4 100644 --- a/include/linux/mbus.h +++ b/include/linux/mbus.h @@ -11,6 +11,8 @@ #ifndef __LINUX_MBUS_H #define __LINUX_MBUS_H +#include + struct resource; struct mbus_dram_target_info @@ -55,6 +57,8 @@ struct mbus_dram_target_info #ifdef CONFIG_PLAT_ORION extern const struct mbus_dram_target_info *mv_mbus_dram_info(void); extern const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(void); +int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, u8 *target, + u8 *attr); #else static inline const struct mbus_dram_target_info *mv_mbus_dram_info(void) { @@ -64,14 +68,24 @@ static inline const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(vo { return NULL; } +static inline int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, + u8 *target, u8 *attr) +{ + /* + * On all ARM32 MVEBU platforms with MBus support, this stub + * function will not get called. The real function from the + * MBus driver is called instead. ARM64 MVEBU platforms like + * the Armada 3700 could use the mv_xor device driver which calls + * into this function + */ + return -EINVAL; +} #endif int mvebu_mbus_save_cpu_target(u32 __iomem *store_addr); void mvebu_mbus_get_pcie_mem_aperture(struct resource *res); void mvebu_mbus_get_pcie_io_aperture(struct resource *res); int mvebu_mbus_get_dram_win_info(phys_addr_t phyaddr, u8 *target, u8 *attr); -int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, u8 *target, - u8 *attr); int mvebu_mbus_add_window_remap_by_id(unsigned int target, unsigned int attribute, phys_addr_t base, size_t size,