From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: [PATCH 2/3] hexagon: implement the sync_sg_for_device DMA operation Date: Thu, 19 Jul 2018 05:56:34 -0700 Message-ID: <20180719125635.824-3-hch@lst.de> References: <20180719125635.824-1-hch@lst.de> Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Gav4/C9vSOOXI2qu0UcM2ChCacoDHQJI2xirMnrvTFg=; b=msoGHII5gxr+bblRF00h2piVo PIQkk2uvFrXxPwahC8iO85E7mMy4jELkNRwBlg3xFQA9JiUdp6/IC4kAw5mB7PpOmcGW+Y2DQkXRP MLRdpI1hv6CD4oydgAmc75iBhyAdWfh4kK1HQtef+Yyi/oPteFsHCxbpnX7dEeFj5mgZEwMTQatjb LeMl2ZCrOX8sSMn0nwKr7wP+/O7tTY228PsenYQc2CYWf0M8TbRqRNaFL6H+K1y9l8uvVz08DalC/ I6RzxJpnHn8DvUAjBuzLq+qTBTIEppJDBfPdYhyVICRFiMmRxJadrIDirxeOITMEwUMZM8D+8rR+i In-Reply-To: <20180719125635.824-1-hch@lst.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Richard Kuo Cc: linux-hexagon@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org This methods needs to provide the equivalent of sync_single_for_device for each S/G list element, but was missing. Signed-off-by: Christoph Hellwig --- arch/hexagon/kernel/dma.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c index d2b717f352f4..9e46556a227d 100644 --- a/arch/hexagon/kernel/dma.c +++ b/arch/hexagon/kernel/dma.c @@ -188,6 +188,18 @@ static void hexagon_sync_single_for_device(struct device *dev, dma_sync(dma_addr_to_virt(dma_handle), size, dir); } +static void hexagon_sync_sg_for_device(struct device *dev, + struct scatterlist *sgl, int nents, enum dma_data_direction dir) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nents, i) + hexagon_sync_single_for_device(dev, sg_dma_address(sg), + sg->length, dir); +} + + static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr) { return dma_addr == HEXAGON_MAPPING_ERROR; @@ -199,6 +211,7 @@ const struct dma_map_ops hexagon_dma_ops = { .map_sg = hexagon_map_sg, .map_page = hexagon_map_page, .sync_single_for_device = hexagon_sync_single_for_device, + .sync_sg_for_device = hexagon_sync_sg_for_device, .mapping_error = hexagon_mapping_error, }; -- 2.18.0