From patchwork Wed Aug 12 07:05:30 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 6997091 Return-Path: X-Original-To: patchwork-linux-parisc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9BA0D9F4F5 for ; Wed, 12 Aug 2015 07:17:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CC27F20504 for ; Wed, 12 Aug 2015 07:17:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16DAE205C1 for ; Wed, 12 Aug 2015 07:17:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965127AbbHLHJY (ORCPT ); Wed, 12 Aug 2015 03:09:24 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:53076 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965040AbbHLHJQ (ORCPT ); Wed, 12 Aug 2015 03:09:16 -0400 Received: from p5de57192.dip0.t-ipconnect.de ([93.229.113.146] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZPQ9u-0001cf-2B; Wed, 12 Aug 2015 07:09:10 +0000 From: Christoph Hellwig To: torvalds@linux-foundation.org, axboe@kernel.dk Cc: dan.j.williams@intel.com, vgupta@synopsys.com, hskinnemoen@gmail.com, egtvedt@samfundet.no, realmz6@gmail.com, dhowells@redhat.com, monstr@monstr.eu, x86@kernel.org, dwmw2@infradead.org, alex.williamson@redhat.com, grundler@parisc-linux.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-nvdimm@ml01.01.org, linux-media@vger.kernel.org Subject: [PATCH 11/31] sparc/iommu: handle page-less SG entries Date: Wed, 12 Aug 2015 09:05:30 +0200 Message-Id: <1439363150-8661-12-git-send-email-hch@lst.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439363150-8661-1-git-send-email-hch@lst.de> References: <1439363150-8661-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Use sg_phys() instead of __pa(sg_virt(sg)) so that we don't require a kernel virtual address. Signed-off-by: Christoph Hellwig --- arch/sparc/kernel/iommu.c | 2 +- arch/sparc/kernel/iommu_common.h | 4 +--- arch/sparc/kernel/pci_sun4v.c | 2 +- 3 files changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 5320689..2ad89d2 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -486,7 +486,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist, continue; } /* Allocate iommu entries for that segment */ - paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s); + paddr = sg_phys(s); npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE); entry = iommu_tbl_range_alloc(dev, &iommu->tbl, npages, &handle, (unsigned long)(-1), 0); diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h index b40cec2..8e2c211 100644 --- a/arch/sparc/kernel/iommu_common.h +++ b/arch/sparc/kernel/iommu_common.h @@ -33,15 +33,13 @@ */ #define IOMMU_PAGE_SHIFT 13 -#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG)))) - static inline int is_span_boundary(unsigned long entry, unsigned long shift, unsigned long boundary_size, struct scatterlist *outs, struct scatterlist *sg) { - unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs); + unsigned long paddr = sg_phys(outs); int nr = iommu_num_pages(paddr, outs->dma_length + sg->length, IO_PAGE_SIZE); diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index d2fe57d..a7a6e41 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -370,7 +370,7 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist, continue; } /* Allocate iommu entries for that segment */ - paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s); + paddr = sg_phys(s); npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE); entry = iommu_tbl_range_alloc(dev, &iommu->tbl, npages, &handle, (unsigned long)(-1), 0);