From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754777AbYLBNCV (ORCPT ); Tue, 2 Dec 2008 08:02:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753595AbYLBNBf (ORCPT ); Tue, 2 Dec 2008 08:01:35 -0500 Received: from outbound-wa4.frontbridge.com ([216.32.181.16]:49211 "EHLO WA4EHSOBE005.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753544AbYLBNBc (ORCPT ); Tue, 2 Dec 2008 08:01:32 -0500 X-BigFish: VPS-3(ze80iz18c1K655Oc8kzzzzz32i43j65h) X-Spam-TCS-SCL: 4:0 X-FB-SS: 5, X-WSS-ID: 0KB92UC-04-VCU-01 From: Joerg Roedel To: Ingo Molnar , Avi Kivity , David Woodhouse , Greg Kroah-Hartman , Alexander Graf , Han Weidong CC: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, iommu@lists.linux-foundation.org, Joerg Roedel Subject: [PATCH 05/12] add frontend implementation for the IOMMU API Date: Tue, 2 Dec 2008 14:01:16 +0100 Message-ID: <1228222883-17207-6-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <1228222883-17207-1-git-send-email-joerg.roedel@amd.com> References: <1228222883-17207-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 02 Dec 2008 13:01:23.0880 (UTC) FILETIME=[143B1A80:01C9547E] 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 Signed-off-by: Joerg Roedel --- drivers/base/iommu.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 100 insertions(+), 0 deletions(-) create mode 100644 drivers/base/iommu.c diff --git a/drivers/base/iommu.c b/drivers/base/iommu.c new file mode 100644 index 0000000..5e039d4 --- /dev/null +++ b/drivers/base/iommu.c @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2007-2008 Advanced Micro Devices, Inc. + * Author: Joerg Roedel + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include + +static struct iommu_ops *iommu_ops; + +void register_iommu(struct iommu_ops *ops) +{ + if (iommu_ops) + BUG(); + + iommu_ops = ops; +} + +bool iommu_found() +{ + return iommu_ops != NULL; +} +EXPORT_SYMBOL_GPL(iommu_found); + +struct iommu_domain *iommu_domain_alloc(void) +{ + struct iommu_domain *domain; + int ret; + + domain = kmalloc(sizeof(*domain), GFP_KERNEL); + if (!domain) + return NULL; + + ret = iommu_ops->domain_init(domain); + if (ret) + goto out_free; + + return domain; + +out_free: + kfree(domain); + + return NULL; +} +EXPORT_SYMBOL_GPL(iommu_domain_alloc); + +void iommu_domain_free(struct iommu_domain *domain) +{ + iommu_ops->domain_destroy(domain); + kfree(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_free); + +int iommu_attach_device(struct iommu_domain *domain, struct device *dev) +{ + return iommu_ops->attach_dev(domain, dev); +} +EXPORT_SYMBOL_GPL(iommu_attach_device); + +void iommu_detach_device(struct iommu_domain *domain, struct device *dev) +{ + iommu_ops->detach_dev(domain, dev); +} +EXPORT_SYMBOL_GPL(iommu_detach_device); + +int iommu_map_range(struct iommu_domain *domain, unsigned long iova, + phys_addr_t paddr, size_t size, int prot) +{ + return iommu_ops->map(domain, iova, paddr, size, prot); +} +EXPORT_SYMBOL_GPL(iommu_map_range); + +void iommu_unmap_range(struct iommu_domain *domain, unsigned long iova, + size_t size) +{ + iommu_ops->unmap(domain, iova, size); +} +EXPORT_SYMBOL_GPL(iommu_unmap_range); + +phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, + unsigned long iova) +{ + return iommu_ops->iova_to_phys(domain, iova); +} +EXPORT_SYMBOL_GPL(iommu_iova_to_phys); -- 1.5.6.4