From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760256AbYLDRmk (ORCPT ); Thu, 4 Dec 2008 12:42:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756593AbYLDRcz (ORCPT ); Thu, 4 Dec 2008 12:32:55 -0500 Received: from outbound-sin.frontbridge.com ([207.46.51.80]:16150 "EHLO SG2EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758716AbYLDRcf (ORCPT ); Thu, 4 Dec 2008 12:32:35 -0500 X-BigFish: VPS3(zzzzzzz32i43j66h) X-Spam-TCS-SCL: 5:0 X-WSS-ID: 0KBD4PC-03-CXF-01 From: Joerg Roedel To: avi@redhat.com, mingo@redhat.com, dwmw2@infradead.org, gregkh@suse.de, weidong.han@intel.com CC: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Joerg Roedel Subject: [PATCH 16/19] AMD IOMMU: add domain map function for IOMMU API Date: Thu, 4 Dec 2008 18:31:53 +0100 Message-ID: <1228411916-22668-17-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <20081204172142.GH12816@amd.com> References: <20081204172142.GH12816@amd.com> X-OriginalArrivalTime: 04 Dec 2008 17:31:57.0417 (UTC) FILETIME=[34FFC590:01C95636] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Impact: add a generic function to map pages into protection domains Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index d3fee3e..8391b09 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1615,3 +1615,31 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, return 0; } +static int amd_iommu_map_range(struct iommu_domain *dom, + unsigned long iova, phys_addr_t paddr, + size_t size, int iommu_prot) +{ + struct protection_domain *domain = dom->priv; + unsigned long i, npages = iommu_num_pages(paddr, size, PAGE_SIZE); + int prot = 0; + int ret; + + if (iommu_prot & IOMMU_READ) + prot |= IOMMU_PROT_IR; + if (iommu_prot & IOMMU_WRITE) + prot |= IOMMU_PROT_IW; + + iova &= PAGE_MASK; + paddr &= PAGE_MASK; + + for (i = 0; i < npages; ++i) { + ret = iommu_map_page(domain, iova, paddr, prot); + if (ret) + return ret; + + iova += PAGE_SIZE; + paddr += PAGE_SIZE; + } + + return 0; +} -- 1.5.6.4