From patchwork Fri Apr 29 09:25:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quan Xu X-Patchwork-Id: 8979101 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6DA0DBF29F for ; Fri, 29 Apr 2016 09:30:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7F91D201FA for ; Fri, 29 Apr 2016 09:30:58 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 805BA200FF for ; Fri, 29 Apr 2016 09:30:57 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1aw4jR-0000PF-A5; Fri, 29 Apr 2016 09:29:05 +0000 Received: from mail6.bemta6.messagelabs.com ([85.158.143.247]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1aw4jP-0000Hi-SY for xen-devel@lists.xen.org; Fri, 29 Apr 2016 09:29:03 +0000 Received: from [85.158.143.35] by server-1.bemta-6.messagelabs.com id CD/84-18833-F5923275; Fri, 29 Apr 2016 09:29:03 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrLLMWRWlGSWpSXmKPExsVywNwkQjdeUzn cYPkrAYslHxezODB6HN39mymAMYo1My8pvyKBNWPh+yWMBdd1K26uec3YwHhQsYuRk0NIoEKi f/pSNhBbQoBX4siyGawQtr/E/K132CBqaiSOdB1gAbHZBBQlNlxczgRiiwhIS1z7fJmxi5GLg 1lgPqPEy0d32UESwgLxEheenwVrYBFQlbh+aw0ziM0r4CTRN+kTC8QCBYllX9aCxTmB4tevv4 da5ijxofsH6wRG3gWMDKsY1YtTi8pSi3SN9JKKMtMzSnITM3N0DQ3M9HJTi4sT01NzEpOK9ZL zczcxAoOBAQh2MC7763SIUZKDSUmUN4RTOVyILyk/pTIjsTgjvqg0J7X4EKMMB4eSBG+cBlBO sCg1PbUiLTMHGJYwaQkOHiURXiOQNG9xQWJucWY6ROoUo6KUOK8WSEIAJJFRmgfXBouFS4yyU sK8jECHCPEUpBblZpagyr9iFOdgVBLm7QCZwpOZVwI3/RXQYiagxQKbFEEWlyQipKQaGHnM9Z MU35iYrfXYtfR1fbOSXYf773dn+D6zbdqW5bzY/9LvqaUzHK0Oe9+5c+nrb7b5Fl3rFXuXyep 8OHHp14LorI3C898UtLpePL5CkE/I71mS+Py2PYoX898vXFOd8MZvl3r46+UrjO1WxjG8XnGz k2FBQ+DRv1b7Ypxv6LxcNnW27fr2veeVWIozEg21mIuKEwGLS6k9gAIAAA== X-Env-Sender: quan.xu@intel.com X-Msg-Ref: server-2.tower-21.messagelabs.com!1461922125!2123467!11 X-Originating-IP: [192.55.52.88] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTkyLjU1LjUyLjg4ID0+IDM3NDcyNQ==\n X-StarScan-Received: X-StarScan-Version: 8.34; banners=-,-,- X-VirusChecked: Checked Received: (qmail 46113 invoked from network); 29 Apr 2016 09:29:02 -0000 Received: from mga01.intel.com (HELO mga01.intel.com) (192.55.52.88) by server-2.tower-21.messagelabs.com with SMTP; 29 Apr 2016 09:29:02 -0000 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP; 29 Apr 2016 02:29:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,551,1455004800"; d="scan'208";a="965266522" Received: from xen-commits.sh.intel.com ([10.239.82.178]) by orsmga002.jf.intel.com with ESMTP; 29 Apr 2016 02:29:00 -0700 From: Quan Xu To: xen-devel@lists.xen.org Date: Fri, 29 Apr 2016 17:25:17 +0800 Message-Id: <1461921917-48394-11-git-send-email-quan.xu@intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1461921917-48394-1-git-send-email-quan.xu@intel.com> References: <1461921917-48394-1-git-send-email-quan.xu@intel.com> Cc: Kevin Tian , dario.faggioli@citrix.com, Feng Wu , Jan Beulich , Quan Xu Subject: [Xen-devel] [PATCH v3 10/10] vt-d: propagate error up to ME phantom function mapping and unmapping X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Propagate the IOMMU Device-TLB flush error up to ME phantom function mapping and unmapping. Signed-off-by: Quan Xu CC: Jan Beulich CC: Kevin Tian CC: Feng Wu --- xen/drivers/passthrough/vtd/extern.h | 3 ++- xen/drivers/passthrough/vtd/iommu.c | 18 ++++++++++++++---- xen/drivers/passthrough/vtd/quirks.c | 28 ++++++++++++++++++---------- 3 files changed, 34 insertions(+), 15 deletions(-) diff --git a/xen/drivers/passthrough/vtd/extern.h b/xen/drivers/passthrough/vtd/extern.h index cbe0286..6772839 100644 --- a/xen/drivers/passthrough/vtd/extern.h +++ b/xen/drivers/passthrough/vtd/extern.h @@ -91,7 +91,8 @@ int is_igd_vt_enabled_quirk(void); void platform_quirks_init(void); void vtd_ops_preamble_quirk(struct iommu* iommu); void vtd_ops_postamble_quirk(struct iommu* iommu); -void me_wifi_quirk(struct domain *domain, u8 bus, u8 devfn, int map); +int __must_check me_wifi_quirk(struct domain *domain, + u8 bus, u8 devfn, int map); void pci_vtd_quirk(const struct pci_dev *); bool_t platform_supports_intremap(void); bool_t platform_supports_x2apic(void); diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c index cf847ec..bfee299 100644 --- a/xen/drivers/passthrough/vtd/iommu.c +++ b/xen/drivers/passthrough/vtd/iommu.c @@ -1301,7 +1301,7 @@ int domain_context_mapping_one( u64 maddr, pgd_maddr; u16 seg = iommu->intel->drhd->segment; int agaw; - int rc; + int rc, ret; ASSERT(pcidevs_locked()); spin_lock(&iommu->lock); @@ -1435,7 +1435,12 @@ int domain_context_mapping_one( unmap_vtd_domain_page(context_entries); if ( !seg ) - me_wifi_quirk(domain, bus, devfn, MAP_ME_PHANTOM_FUNC); + { + ret = me_wifi_quirk(domain, bus, devfn, MAP_ME_PHANTOM_FUNC); + + if ( !rc && unlikely(ret) ) + rc = ret; + } return rc; } @@ -1532,7 +1537,7 @@ int domain_context_unmap_one( struct context_entry *context, *context_entries; u64 maddr; int iommu_domid; - int rc; + int rc, ret; ASSERT(pcidevs_locked()); spin_lock(&iommu->lock); @@ -1580,7 +1585,12 @@ int domain_context_unmap_one( unmap_vtd_domain_page(context_entries); if ( !iommu->intel->drhd->segment ) - me_wifi_quirk(domain, bus, devfn, UNMAP_ME_PHANTOM_FUNC); + { + ret = me_wifi_quirk(domain, bus, devfn, UNMAP_ME_PHANTOM_FUNC); + + if ( !rc && unlikely(ret) ) + rc = ret; + } return rc; } diff --git a/xen/drivers/passthrough/vtd/quirks.c b/xen/drivers/passthrough/vtd/quirks.c index 49df41d..bc17d44 100644 --- a/xen/drivers/passthrough/vtd/quirks.c +++ b/xen/drivers/passthrough/vtd/quirks.c @@ -332,10 +332,12 @@ void __init platform_quirks_init(void) * assigning Intel integrated wifi device to a guest. */ -static void map_me_phantom_function(struct domain *domain, u32 dev, int map) +static int __must_check map_me_phantom_function(struct domain *domain, + u32 dev, int map) { struct acpi_drhd_unit *drhd; struct pci_dev *pdev; + int rc; /* find ME VT-d engine base on a real ME device */ pdev = pci_get_pdev(0, 0, PCI_DEVFN(dev, 0)); @@ -343,23 +345,27 @@ static void map_me_phantom_function(struct domain *domain, u32 dev, int map) /* map or unmap ME phantom function */ if ( map ) - domain_context_mapping_one(domain, drhd->iommu, 0, - PCI_DEVFN(dev, 7), NULL); + rc = domain_context_mapping_one(domain, drhd->iommu, 0, + PCI_DEVFN(dev, 7), NULL); else - domain_context_unmap_one(domain, drhd->iommu, 0, - PCI_DEVFN(dev, 7)); + rc = domain_context_unmap_one(domain, drhd->iommu, 0, + PCI_DEVFN(dev, 7)); + + return rc; } -void me_wifi_quirk(struct domain *domain, u8 bus, u8 devfn, int map) +int __must_check me_wifi_quirk(struct domain *domain, + u8 bus, u8 devfn, int map) { u32 id; + int rc = 0; id = pci_conf_read32(0, 0, 0, 0, 0); if ( IS_CTG(id) ) { /* quit if ME does not exist */ if ( pci_conf_read32(0, 0, 3, 0, 0) == 0xffffffff ) - return; + return 0; /* if device is WLAN device, map ME phantom device 0:3.7 */ id = pci_conf_read32(0, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), 0); @@ -373,7 +379,7 @@ void me_wifi_quirk(struct domain *domain, u8 bus, u8 devfn, int map) case 0x423b8086: case 0x423c8086: case 0x423d8086: - map_me_phantom_function(domain, 3, map); + rc = map_me_phantom_function(domain, 3, map); break; default: break; @@ -383,7 +389,7 @@ void me_wifi_quirk(struct domain *domain, u8 bus, u8 devfn, int map) { /* quit if ME does not exist */ if ( pci_conf_read32(0, 0, 22, 0, 0) == 0xffffffff ) - return; + return 0; /* if device is WLAN device, map ME phantom device 0:22.7 */ id = pci_conf_read32(0, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), 0); @@ -399,12 +405,14 @@ void me_wifi_quirk(struct domain *domain, u8 bus, u8 devfn, int map) case 0x42388086: /* Puma Peak */ case 0x422b8086: case 0x422c8086: - map_me_phantom_function(domain, 22, map); + rc = map_me_phantom_function(domain, 22, map); break; default: break; } } + + return rc; } void pci_vtd_quirk(const struct pci_dev *pdev)