From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by casper.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ewosD-0008BR-63 for barebox@lists.infradead.org; Fri, 16 Mar 2018 12:54:20 +0000 From: Sascha Hauer Date: Fri, 16 Mar 2018 13:53:26 +0100 Message-Id: <20180316125354.23462-51-s.hauer@pengutronix.de> In-Reply-To: <20180316125354.23462-1-s.hauer@pengutronix.de> References: <20180316125354.23462-1-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 50/78] ARM: implement dma mapping functions To: Barebox List Implement basic dma mapping functions. For now just assume every address is valid for dma mapping. Signed-off-by: Sascha Hauer --- arch/arm/cpu/mmu.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c index fc71cf03cd..6ccd5893b4 100644 --- a/arch/arm/cpu/mmu.c +++ b/arch/arm/cpu/mmu.c @@ -598,3 +598,19 @@ void dma_sync_single_for_device(dma_addr_t address, size_t size, outer_cache.clean_range(address, address + size); } } + +dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size, + enum dma_data_direction dir) +{ + unsigned long addr = (unsigned long)ptr; + + dma_sync_single_for_device(addr, size, dir); + + return addr; +} + +void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size, + enum dma_data_direction dir) +{ + dma_sync_single_for_cpu(addr, size, dir); +} -- 2.16.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox