From patchwork Wed Sep 9 03:20:09 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Bottomley X-Patchwork-Id: 46314 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n893KMx8020830 for ; Wed, 9 Sep 2009 03:20:22 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751462AbZIIDUS (ORCPT ); Tue, 8 Sep 2009 23:20:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752279AbZIIDUS (ORCPT ); Tue, 8 Sep 2009 23:20:18 -0400 Received: from cantor.suse.de ([195.135.220.2]:33561 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751436AbZIIDUQ (ORCPT ); Tue, 8 Sep 2009 23:20:16 -0400 Received: from relay2.suse.de (relay-ext.suse.de [195.135.221.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.suse.de (Postfix) with ESMTP id 5E46B6CB00; Wed, 9 Sep 2009 05:20:19 +0200 (CEST) Subject: [PATCH 3/5] arm: add mm API for DMA to vmalloc/vmap areas From: James Bottomley To: Russell King Cc: Parisc List , Linux Filesystem Mailing List , linux-arch@vger.kernel.org, Christoph Hellwig In-Reply-To: <1252466070.13003.365.camel@mulgrave.site> References: <1252434469.13003.3.camel@mulgrave.site> <20090908190031.GF6538@flint.arm.linux.org.uk> <1252437112.13003.39.camel@mulgrave.site> <20090908201619.GG6538@flint.arm.linux.org.uk> <1252442352.13003.132.camel@mulgrave.site> <20090908213910.GH6538@flint.arm.linux.org.uk> <1252466070.13003.365.camel@mulgrave.site> Date: Tue, 08 Sep 2009 22:20:09 -0500 Message-Id: <1252466409.13003.371.camel@mulgrave.site> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org ARM cannot prevent cache movein, so this patch implements both the flush and invalidate pieces of the API. Signed-off-by: James Bottomley --- arch/arm/include/asm/cacheflush.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 1a711ea..1104ee9 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -436,6 +436,16 @@ static inline void flush_kernel_dcache_page(struct page *page) if ((cache_is_vivt() || cache_is_vipt_aliasing()) && !PageHighMem(page)) __cpuc_flush_dcache_page(page_address(page)); } +static inline void flush_kernel_dcache_addr(void *addr) +{ + if ((cache_is_vivt() || cache_is_vipt_aliasing())) + __cpuc_flush_dcache_page(addr); +} +static inline void invalidate_kernel_dcache_addr(void *addr) +{ + if ((cache_is_vivt() || cache_is_vipt_aliasing())) + __cpuc_flush_dcache_page(addr); +} #define flush_dcache_mmap_lock(mapping) \ spin_lock_irq(&(mapping)->tree_lock)