From patchwork Wed Oct 9 20:48:20 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 3011611 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 81A8EBF924 for ; Wed, 9 Oct 2013 20:52:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AF48F2026F for ; Wed, 9 Oct 2013 20:52:54 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ADD5B200F4 for ; Wed, 9 Oct 2013 20:52:53 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VU0j5-0001Bw-IA; Wed, 09 Oct 2013 20:51:24 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VU0ie-000077-Ar; Wed, 09 Oct 2013 20:50:56 +0000 Received: from smtp.citrix.com ([66.165.176.89]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VU0hn-0008OZ-0M for linux-arm-kernel@lists.infradead.org; Wed, 09 Oct 2013 20:50:05 +0000 X-IronPort-AV: E=Sophos;i="4.90,1066,1371081600"; d="scan'208";a="62111340" Received: from accessns.citrite.net (HELO FTLPEX01CL01.citrite.net) ([10.9.154.239]) by FTLPIPO01.CITRIX.COM with ESMTP; 09 Oct 2013 20:49:27 +0000 Received: from ukmail1.uk.xensource.com (10.80.16.128) by smtprelay.citrix.com (10.13.107.78) with Microsoft SMTP Server id 14.2.342.4; Wed, 9 Oct 2013 16:49:27 -0400 Received: from kaball.uk.xensource.com ([10.80.2.59]) by ukmail1.uk.xensource.com with esmtp (Exim 4.69) (envelope-from ) id 1VU0h7-00075H-Tp; Wed, 09 Oct 2013 21:49:21 +0100 From: Stefano Stabellini To: Subject: [PATCH v8 07/17] swiotlb-xen: introduce xen_swiotlb_set_dma_mask Date: Wed, 9 Oct 2013 21:48:20 +0100 Message-ID: <1381351710-1876-7-git-send-email-stefano.stabellini@eu.citrix.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-DLP: MIA1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131009_165003_306178_5CDF51C9 X-CRM114-Status: GOOD ( 10.98 ) X-Spam-Score: -7.1 (-------) Cc: Ian.Campbell@citrix.com, Stefano Stabellini , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, konrad.wilk@oracle.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement xen_swiotlb_set_dma_mask, use it for set_dma_mask on arm. Signed-off-by: Stefano Stabellini --- arch/arm/xen/mm.c | 1 + drivers/xen/swiotlb-xen.c | 12 ++++++++++++ include/xen/swiotlb-xen.h | 2 ++ 3 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 68d082e..042c43a 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -103,6 +103,7 @@ static struct dma_map_ops xen_swiotlb_dma_ops = { .map_page = xen_swiotlb_map_page, .unmap_page = xen_swiotlb_unmap_page, .dma_supported = xen_swiotlb_dma_supported, + .set_dma_mask = xen_swiotlb_set_dma_mask, }; int __init xen_mm_init(void) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index f0fc1a4..d8ef0bf 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -608,3 +608,15 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask) return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask; } EXPORT_SYMBOL_GPL(xen_swiotlb_dma_supported); + +int +xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask) +{ + if (!dev->dma_mask || !xen_swiotlb_dma_supported(dev, dma_mask)) + return -EIO; + + *dev->dma_mask = dma_mask; + + return 0; +} +EXPORT_SYMBOL_GPL(xen_swiotlb_set_dma_mask); diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h index de8bcc6..7b64465 100644 --- a/include/xen/swiotlb-xen.h +++ b/include/xen/swiotlb-xen.h @@ -55,4 +55,6 @@ xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); extern int xen_swiotlb_dma_supported(struct device *hwdev, u64 mask); +extern int +xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask); #endif /* __LINUX_SWIOTLB_XEN_H */