From patchwork Wed Jan 29 12:16:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 11356131 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 916F792A for ; Wed, 29 Jan 2020 12:18:38 +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 72BBD20716 for ; Wed, 29 Jan 2020 12:18:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72BBD20716 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:45468 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwmIn-0002ry-II for patchwork-qemu-devel@patchwork.kernel.org; Wed, 29 Jan 2020 07:18:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52344) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwmCT-0007rE-Lg for qemu-devel@nongnu.org; Wed, 29 Jan 2020 07:12:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iwmCS-0001yn-Gv for qemu-devel@nongnu.org; Wed, 29 Jan 2020 07:12:05 -0500 Received: from mga09.intel.com ([134.134.136.24]:58712) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iwmCS-0001Pn-7O for qemu-devel@nongnu.org; Wed, 29 Jan 2020 07:12:04 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Jan 2020 04:11:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,377,1574150400"; d="scan'208";a="314071033" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by fmsmga001.fm.intel.com with ESMTP; 29 Jan 2020 04:11:48 -0800 From: "Liu, Yi L" To: qemu-devel@nongnu.org, david@gibson.dropbear.id.au, pbonzini@redhat.com, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v3 12/25] vfio/common: add pasid_alloc/free support Date: Wed, 29 Jan 2020 04:16:43 -0800 Message-Id: <1580300216-86172-13-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580300216-86172-1-git-send-email-yi.l.liu@intel.com> References: <1580300216-86172-1-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: 134.134.136.24 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: kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , hao.wu@intel.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Liu Yi L This patch adds VFIO pasid alloc/free support to allow host intercept in PASID allocation for VM by adding VFIO implementation of DualStageIOMMUOps.pasid_alloc/free callbacks. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Cc: Alex Williamson Signed-off-by: Liu Yi L --- hw/vfio/common.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index a07824b..014f4e7 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1179,7 +1179,49 @@ static int vfio_get_iommu_type(VFIOContainer *container, return -EINVAL; } +static int vfio_ds_iommu_pasid_alloc(DualStageIOMMUObject *dsi_obj, + uint32_t min, uint32_t max, uint32_t *pasid) +{ + VFIOContainer *container = container_of(dsi_obj, VFIOContainer, dsi_obj); + struct vfio_iommu_type1_pasid_request req; + unsigned long argsz; + + argsz = sizeof(req); + req.argsz = argsz; + req.flags = VFIO_IOMMU_PASID_ALLOC; + req.alloc_pasid.min = min; + req.alloc_pasid.max = max; + + if (ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req)) { + error_report("%s: %d, alloc failed", __func__, -errno); + return -errno; + } + *pasid = req.alloc_pasid.result; + return 0; +} + +static int vfio_ds_iommu_pasid_free(DualStageIOMMUObject *dsi_obj, + uint32_t pasid) +{ + VFIOContainer *container = container_of(dsi_obj, VFIOContainer, dsi_obj); + struct vfio_iommu_type1_pasid_request req; + unsigned long argsz; + + argsz = sizeof(req); + req.argsz = argsz; + req.flags = VFIO_IOMMU_PASID_FREE; + req.free_pasid = pasid; + + if (ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req)) { + error_report("%s: %d, free failed", __func__, -errno); + return -errno; + } + return 0; +} + static struct DualStageIOMMUOps vfio_ds_iommu_ops = { + .pasid_alloc = vfio_ds_iommu_pasid_alloc, + .pasid_free = vfio_ds_iommu_pasid_free, }; static int vfio_get_iommu_info(VFIOContainer *container,