From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38F43C433DB for ; Fri, 26 Feb 2021 14:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E82AA64F0E for ; Fri, 26 Feb 2021 14:06:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230179AbhBZOF6 (ORCPT ); Fri, 26 Feb 2021 09:05:58 -0500 Received: from mx2.suse.de ([195.135.220.15]:54868 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230060AbhBZOEo (ORCPT ); Fri, 26 Feb 2021 09:04:44 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C7C26AE07; Fri, 26 Feb 2021 14:03:19 +0000 (UTC) From: Nicolas Saenz Julienne To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: f.fainelli@gmail.com, robh+dt@kernel.org, robin.murphy@arm.com, ardb@kernel.org, hch@infradead.org, narmstrong@baylibre.com, dwmw2@infradead.org, linux@armlinux.org.uk, catalin.marinas@arm.com, arnd@arndb.de, will@kernel.org, Nicolas Saenz Julienne Subject: [RFC 06/13] device core: Introduce dev_64bit_mmio_supported() Date: Fri, 26 Feb 2021 15:02:58 +0100 Message-Id: <20210226140305.26356-7-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210226140305.26356-1-nsaenzjulienne@suse.de> References: <20210226140305.26356-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This helper function will be help drivers ascertain whether they can use 64-bit memory accesses. Signed-off-by: Nicolas Saenz Julienne --- include/linux/device.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index bd94aa0cbd72..e9b4b2f99a44 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -826,6 +826,23 @@ static inline int dev_num_vf(struct device *dev) return 0; } +#if defined(CONFIG_ARCH_HAS_64BIT_MMIO_BROKEN) +static inline bool dev_64bit_mmio_supported(struct device *dev) +{ + return !dev->mmio_64bit_broken; +} +#elif defined(CONFIG_64BIT) +static inline bool dev_64bit_mmio_supported(struct device *dev) +{ + return true; +} +#else +static inline bool dev_64bit_mmio_supported(struct device *dev) +{ + return false; +} +#endif + /* * Root device objects for grouping under /sys/devices */ -- 2.30.1