From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758825AbYLDRm5 (ORCPT ); Thu, 4 Dec 2008 12:42:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755452AbYLDRc4 (ORCPT ); Thu, 4 Dec 2008 12:32:56 -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 S1758721AbYLDRcg (ORCPT ); Thu, 4 Dec 2008 12:32:36 -0500 X-BigFish: VPS3(zzzzzzz32i43j66h) X-Spam-TCS-SCL: 5:0 X-WSS-ID: 0KBD4PA-04-YDS-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 15/19] AMD IOMMU: add device attach function for IOMMU API Date: Thu, 4 Dec 2008 18:31:52 +0100 Message-ID: <1228411916-22668-16-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 17:31:57.0386 (UTC) FILETIME=[34FB0AA0:01C95636] 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 attach devices to protection domains Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 35 +++++++++++++++++++++++++++++++++++ 1 files changed, 35 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 0ded6f4..d3fee3e 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1580,3 +1580,38 @@ static void amd_iommu_detach_device(struct iommu_domain *dom, iommu_completion_wait(iommu); } +static int amd_iommu_attach_device(struct iommu_domain *dom, + struct device *dev) +{ + struct protection_domain *domain = dom->priv; + struct protection_domain *old_domain; + struct amd_iommu *iommu; + struct pci_dev *pdev; + u16 devid; + + if (dev->bus != &pci_bus_type) + return -EINVAL; + + pdev = to_pci_dev(dev); + + devid = calc_devid(pdev->bus->number, pdev->devfn); + + if (devid >= amd_iommu_last_bdf || + devid != amd_iommu_alias_table[devid]) + return -EINVAL; + + iommu = amd_iommu_rlookup_table[devid]; + if (!iommu) + return -EINVAL; + + old_domain = domain_for_device(devid); + if (old_domain) + __detach_device(old_domain, devid); + + set_device_domain(iommu, domain, devid); + + iommu_completion_wait(iommu); + + return 0; +} + -- 1.5.6.4