Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755821AbYLIOXl (ORCPT ); Tue, 9 Dec 2008 09:23:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754271AbYLIORA (ORCPT ); Tue, 9 Dec 2008 09:17:00 -0500 Received: from outbound-dub.frontbridge.com ([213.199.154.16]:40590 "EHLO IE1EHSOBE002.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753931AbYLIOQe (ORCPT ); Tue, 9 Dec 2008 09:16:34 -0500 X-BigFish: VPS3(zzzzzzz32i43j66h) X-Spam-TCS-SCL: 5:0 X-WSS-ID: 0KBM4ZB-03-KL2-01 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 20/21] AMD IOMMU: add domain address lookup function for IOMMU API Date: Tue, 9 Dec 2008 15:16:17 +0100 Message-ID: <1228832178-13429-21-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <1228832178-13429-20-git-send-email-joerg.roedel@amd.com> References: <20081209141143.GW12816@amd.com> <1228832178-13429-1-git-send-email-joerg.roedel@amd.com> <1228832178-13429-2-git-send-email-joerg.roedel@amd.com> <1228832178-13429-3-git-send-email-joerg.roedel@amd.com> <1228832178-13429-4-git-send-email-joerg.roedel@amd.com> <1228832178-13429-5-git-send-email-joerg.roedel@amd.com> <1228832178-13429-6-git-send-email-joerg.roedel@amd.com> <1228832178-13429-7-git-send-email-joerg.roedel@amd.com> <1228832178-13429-8-git-send-email-joerg.roedel@amd.com> <1228832178-13429-9-git-send-email-joerg.roedel@amd.com> <1228832178-13429-10-git-send-email-joerg.roedel@amd.com> <1228832178-13429-11-git-send-email-joerg.roedel@amd.com> <1228832178-13429-12-git-send-email-joerg.roedel@amd.com> <1228832178-13429-13-git-send-email-joerg.roedel@amd.com> <1228832178-13429-14-git-send-email-joerg.roedel@amd.com> <1228832178-13429-15-git-send-email-joerg.roedel@amd.com> <1228832178-13429-16-git-send-email-joerg.roedel@amd.com> <1228832178-13429-17-git-send-email-joerg.roedel@amd.com> <1228832178-13429-18-git-send-email-joerg.roedel@amd.com> <1228832178-13429-19-git-send-email-joerg.roedel@amd.com> <1228832178-13429-20-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 09 Dec 2008 14:16:19.0380 (UTC) FILETIME=[B4A63740:01C95A08] 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 Content-Length: 1442 Lines: 55 Impact: add a generic function to lockup addresses in protection domains Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 6ee9377..b42578b 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1702,3 +1702,34 @@ static void amd_iommu_unmap_range(struct iommu_domain *dom, iommu_flush_domain(domain->id); } + +static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, + unsigned long iova) +{ + struct protection_domain *domain = dom->priv; + unsigned long offset = iova & ~PAGE_MASK; + phys_addr_t paddr; + u64 *pte; + + pte = &domain->pt_root[IOMMU_PTE_L2_INDEX(iova)]; + + if (!IOMMU_PTE_PRESENT(*pte)) + return 0; + + pte = IOMMU_PTE_PAGE(*pte); + pte = &pte[IOMMU_PTE_L1_INDEX(iova)]; + + if (!IOMMU_PTE_PRESENT(*pte)) + return 0; + + pte = IOMMU_PTE_PAGE(*pte); + pte = &pte[IOMMU_PTE_L0_INDEX(iova)]; + + if (!IOMMU_PTE_PRESENT(*pte)) + return 0; + + paddr = *pte & IOMMU_PAGE_MASK; + paddr |= offset; + + return paddr; +} -- 1.5.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/