From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966638AbcAZPiM (ORCPT ); Tue, 26 Jan 2016 10:38:12 -0500 Received: from mail-bl2on0059.outbound.protection.outlook.com ([65.55.169.59]:48768 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966578AbcAZPiF (ORCPT ); Tue, 26 Jan 2016 10:38:05 -0500 Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=amd.com; 8bytes.org; dkim=none (message not signed) header.d=none;8bytes.org; dmarc=permerror action=none header.from=amd.com; X-WSS-ID: 0O1KGRA-07-8VG-02 X-M-MSG: From: Wan Zongshun To: Joerg Roedel , CC: Suravee Suthikulpanit , Borislav Petkov , Ray Huang , , , , , "Wan Zongshun" Subject: [PATCH V2 7/8] iommu/amd: Manage iommu_group for ACPI HID devices Date: Tue, 26 Jan 2016 18:14:36 -0500 Message-ID: <1453850077-2539-8-git-send-email-vincent.wan@amd.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1453850077-2539-1-git-send-email-vincent.wan@amd.com> References: <1453850077-2539-1-git-send-email-vincent.wan@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:165.204.84.221;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10009020)(6009001)(2980300002)(428002)(189002)(199003)(4326007)(19580405001)(53416004)(87936001)(2906002)(50466002)(5001770100001)(92566002)(33646002)(86362001)(5003940100001)(97736004)(50226001)(1096002)(77096005)(1220700001)(11100500001)(229853001)(48376002)(2950100001)(106466001)(76176999)(5008740100001)(189998001)(19580395003)(36756003)(50986999)(105586002)(586003)(5003600100002)(101416001)(47776003)(217873001);DIR:OUT;SFP:1101;SCL:1;SRVR:BN4PR12MB0850;H:atltwp01.amd.com;FPR:;SPF:None;PTR:InfoDomainNonexistent;MX:1;A:1;LANG:en; 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The acpihid devices with the same devid will be put into same group and there will have the same domain id and share the same page table. Signed-off-by: Wan Zongshun --- drivers/iommu/amd_iommu.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 4857d66..59398f9 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -275,6 +275,29 @@ static struct iommu_dev_data *get_dev_data(struct device *dev) return dev->archdata.iommu; } +/* +* Find or create an IOMMU group for a acpihid device. +*/ +static struct iommu_group *acpihid_device_group(struct device *dev) +{ + struct acpihid_map_entry *p, *entry = NULL; + u16 devid; + + devid = get_acpihid_device_id(dev, &entry); + if (devid < 0) + return ERR_PTR(devid); + + list_for_each_entry(p, &acpihid_map, list) { + if ((devid == p->devid) && p->group) + entry->group = p->group; + } + + if (!entry->group) + entry->group = generic_device_group(dev); + + return entry->group; +} + static bool pci_iommuv2_capable(struct pci_dev *pdev) { static const int caps[] = { @@ -2441,6 +2464,14 @@ static void amd_iommu_remove_device(struct device *dev) iommu_completion_wait(iommu); } +static struct iommu_group *amd_iommu_device_group(struct device *dev) +{ + if (dev_is_pci(dev)) + return pci_device_group(dev); + + return acpihid_device_group(dev); +} + /***************************************************************************** * * The next functions belong to the dma_ops mapping/unmapping code. @@ -3282,7 +3313,7 @@ static const struct iommu_ops amd_iommu_ops = { .iova_to_phys = amd_iommu_iova_to_phys, .add_device = amd_iommu_add_device, .remove_device = amd_iommu_remove_device, - .device_group = pci_device_group, + .device_group = amd_iommu_device_group, .get_dm_regions = amd_iommu_get_dm_regions, .put_dm_regions = amd_iommu_put_dm_regions, .pgsize_bitmap = AMD_IOMMU_PGSIZES, -- 1.9.1