From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0740CA9EAF for ; Thu, 24 Oct 2019 13:24:41 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8939C2084C for ; Thu, 24 Oct 2019 13:24:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8939C2084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42534 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNd6W-0006xw-Ch for qemu-devel@archiver.kernel.org; Thu, 24 Oct 2019 09:24:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51703) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNckg-0005mD-AH for qemu-devel@nongnu.org; Thu, 24 Oct 2019 09:02:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNckd-0002k8-4R for qemu-devel@nongnu.org; Thu, 24 Oct 2019 09:02:06 -0400 Received: from mga11.intel.com ([192.55.52.93]:40529) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNckc-0002c5-QZ for qemu-devel@nongnu.org; Thu, 24 Oct 2019 09:02:03 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Oct 2019 06:01:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,224,1569308400"; d="scan'208";a="210156294" Received: from iov.bj.intel.com ([10.238.145.67]) by fmsmga001.fm.intel.com with ESMTP; 24 Oct 2019 06:01:49 -0700 From: Liu Yi L To: qemu-devel@nongnu.org, mst@redhat.com, pbonzini@redhat.com, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v2 14/22] vfio/pci: add iommu_context notifier for pasid bind/unbind Date: Thu, 24 Oct 2019 08:34:35 -0400 Message-Id: <1571920483-3382-15-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1571920483-3382-1-git-send-email-yi.l.liu@intel.com> References: <1571920483-3382-1-git-send-email-yi.l.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.93 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tianyu.lan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , kvm@vger.kernel.org, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, jacob.jun.pan@linux.intel.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch adds notifier for pasid bind/unbind. VFIO registers this notifier to listen to the dual-stage translation (a.k.a. nested translation) configuration changes and propagate to host. Thus vIOMMU is able to set its translation structures to host. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Signed-off-by: Liu Yi L --- hw/vfio/pci.c | 39 +++++++++++++++++++++++++++++++++++++++ include/hw/iommu/iommu.h | 11 +++++++++++ 2 files changed, 50 insertions(+) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 8721ff6..012b8ed 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2767,6 +2767,41 @@ static void vfio_iommu_pasid_free_notify(IOMMUCTXNotifier *n, pasid_req->free_result = ret; } +static void vfio_iommu_pasid_bind_notify(IOMMUCTXNotifier *n, + IOMMUCTXEventData *event_data) +{ +#ifdef __linux__ + VFIOIOMMUContext *giommu_ctx = container_of(n, VFIOIOMMUContext, n); + VFIOContainer *container = giommu_ctx->container; + IOMMUCTXPASIDBindData *pasid_bind = + (IOMMUCTXPASIDBindData *) event_data->data; + struct vfio_iommu_type1_bind *bind; + struct iommu_gpasid_bind_data *bind_data; + unsigned long argsz; + + argsz = sizeof(*bind) + sizeof(*bind_data); + bind = g_malloc0(argsz); + bind->argsz = argsz; + bind->bind_type = VFIO_IOMMU_BIND_GUEST_PASID; + bind_data = (struct iommu_gpasid_bind_data *) &bind->data; + *bind_data = *pasid_bind->data; + + if (pasid_bind->flag & IOMMU_CTX_BIND_PASID) { + if (ioctl(container->fd, VFIO_IOMMU_BIND, bind) != 0) { + error_report("%s: pasid (%llu:%llu) bind failed: %d", __func__, + bind_data->gpasid, bind_data->hpasid, -errno); + } + } else if (pasid_bind->flag & IOMMU_CTX_UNBIND_PASID) { + if (ioctl(container->fd, VFIO_IOMMU_UNBIND, bind) != 0) { + error_report("%s: pasid (%llu:%llu) unbind failed: %d", __func__, + bind_data->gpasid, bind_data->hpasid, -errno); + } + } + + g_free(bind); +#endif +} + static void vfio_realize(PCIDevice *pdev, Error **errp) { VFIOPCIDevice *vdev = PCI_VFIO(pdev); @@ -3079,6 +3114,10 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) iommu_context, vfio_iommu_pasid_free_notify, IOMMU_CTX_EVENT_PASID_FREE); + vfio_register_iommu_ctx_notifier(vdev, + iommu_context, + vfio_iommu_pasid_bind_notify, + IOMMU_CTX_EVENT_PASID_BIND); } return; diff --git a/include/hw/iommu/iommu.h b/include/hw/iommu/iommu.h index 4352afd..4f21aa1 100644 --- a/include/hw/iommu/iommu.h +++ b/include/hw/iommu/iommu.h @@ -33,6 +33,7 @@ typedef struct IOMMUContext IOMMUContext; enum IOMMUCTXEvent { IOMMU_CTX_EVENT_PASID_ALLOC, IOMMU_CTX_EVENT_PASID_FREE, + IOMMU_CTX_EVENT_PASID_BIND, IOMMU_CTX_EVENT_NUM, }; typedef enum IOMMUCTXEvent IOMMUCTXEvent; @@ -50,6 +51,16 @@ union IOMMUCTXPASIDReqDesc { }; typedef union IOMMUCTXPASIDReqDesc IOMMUCTXPASIDReqDesc; +struct IOMMUCTXPASIDBindData { +#define IOMMU_CTX_BIND_PASID (1 << 0) +#define IOMMU_CTX_UNBIND_PASID (1 << 1) + uint32_t flag; +#ifdef __linux__ + struct iommu_gpasid_bind_data *data; +#endif +}; +typedef struct IOMMUCTXPASIDBindData IOMMUCTXPASIDBindData; + struct IOMMUCTXEventData { IOMMUCTXEvent event; uint64_t length; -- 2.7.4