From nobody Mon Apr 7 03:47:09 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1741702375; cv=none; d=zohomail.com; s=zohoarc; b=K2dJl5FG34bN+Q7E45vLJS91OJG20NsxAzB+3KLBaSSz827cJEKt55Km+Gaz/DVmIUXiANF6PLZXbB8LxzRaQTVRNg2LDcVyXHAD8JCEH+ZaK3BDh7ktcWoEk4XDyiNxVEYUeJks5l4j/N55oCI+/UcZeXIRW7n7vndtPCNzbCQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1741702375; h=Content-Type:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=J6PyL26X4Z+fd9pva+ozBZ9+vSE3kJO60n8J0OVLIDI=; b=S8cKwFzBxBvztmxV6KdWx3Ka9D3P+6O4GpD99RSXDROUHQzToxEO9G3e8MFvKGw9r+boHx2T2pYu3o7Ibh1bj4ouh1TUQUTCjsjeWICCx0WDQCKUfiNYoQ+LmOSYHK/iBpXekOmzBFsMravj4jR4anTNMN2RsoTkYqBz0LqKoU4= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17417023757401020.0089555989324; Tue, 11 Mar 2025 07:12:55 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ts0L7-00009Y-69; Tue, 11 Mar 2025 10:12:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ts0L5-00008y-CU; Tue, 11 Mar 2025 10:12:11 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ts0L3-0006qs-Jk; Tue, 11 Mar 2025 10:12:11 -0400 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4ZBwcb03GGz6D8cc; Tue, 11 Mar 2025 22:09:35 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id 951F1140D26; Tue, 11 Mar 2025 22:12:07 +0800 (CST) Received: from A2303104131.china.huawei.com (10.203.177.241) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 11 Mar 2025 15:12:00 +0100 To: , CC: , , , , , , , , , , , , , Subject: [RFC PATCH v2 02/20] backends/iommufd: Introduce iommufd_vdev_alloc Date: Tue, 11 Mar 2025 14:10:27 +0000 Message-ID: <20250311141045.66620-3-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20250311141045.66620-1-shameerali.kolothum.thodi@huawei.com> References: <20250311141045.66620-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.203.177.241] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To frapeml500008.china.huawei.com (7.182.85.71) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=185.176.79.56; envelope-from=shameerali.kolothum.thodi@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Shameer Kolothum From: Shameer Kolothum via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1741702377183019000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Nicolin Chen Add a helper to allocate an iommufd device's virtual device (in the user space) per a viommu instance. Signed-off-by: Nicolin Chen Signed-off-by: Shameer Kolothum Reviewed-by: Eric Auger --- backends/iommufd.c | 26 ++++++++++++++++++++++++++ backends/trace-events | 1 + include/system/iommufd.h | 4 ++++ 3 files changed, 31 insertions(+) diff --git a/backends/iommufd.c b/backends/iommufd.c index 3fac08c96e..3511dd32ab 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -366,6 +366,32 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, = uint32_t dev_id, return true; } =20 +bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_id, uint64_t virt_id, + uint32_t *out_vdev_id, Error **errp) +{ + int ret, fd =3D be->fd; + struct iommu_vdevice_alloc alloc_vdev =3D { + .size =3D sizeof(alloc_vdev), + .viommu_id =3D viommu_id, + .dev_id =3D dev_id, + .virt_id =3D virt_id, + }; + + ret =3D ioctl(fd, IOMMU_VDEVICE_ALLOC, &alloc_vdev); + + trace_iommufd_backend_alloc_vdev(fd, dev_id, viommu_id, virt_id, + alloc_vdev.out_vdevice_id, ret); + + if (ret) { + error_setg_errno(errp, errno, "IOMMU_VDEVICE_ALLOC failed"); + return false; + } + + *out_vdev_id =3D alloc_vdev.out_vdevice_id; + return true; +} + bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev, uint32_t hwpt_id, Error **errp) { diff --git a/backends/trace-events b/backends/trace-events index a835827540..86c8f89e8a 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -20,3 +20,4 @@ iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, = bool start, int ret) " iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t i= ova, uint64_t size, uint64_t page_size, int ret) " iommufd=3D%d hwpt=3D%u i= ova=3D0x%"PRIx64" size=3D0x%"PRIx64" page_size=3D0x%"PRIx64" (%d)" iommufd_backend_invalidate_cache(int iommufd, uint32_t hwpt_id, uint32_t d= ata_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64= _t data_ptr, int ret) " iommufd=3D%d hwpt_id=3D%u data_type=3D%u entry_len= =3D%u entry_num=3D%u done_num=3D%u data_ptr=3D0x%"PRIx64" (%d)" iommufd_backend_alloc_viommu(int iommufd, uint32_t type, uint32_t dev_id, = uint32_t hwpt_id, uint32_t viommu_id, int ret) " iommufd=3D%d type=3D%u dev= _id=3D%u hwpt_id=3D%u viommu_id=3D%u (%d)" +iommufd_backend_alloc_vdev(int iommufd, uint32_t dev_id, uint32_t viommu_i= d, uint64_t virt_id, uint32_t vdev_id, int ret) " iommufd=3D%d dev_id=3D%u = viommu_id=3D%u virt_id=3D0x%"PRIx64" vdev_id=3D%u (%d)" diff --git a/include/system/iommufd.h b/include/system/iommufd.h index 7e5507f2db..53920bae5b 100644 --- a/include/system/iommufd.h +++ b/include/system/iommufd.h @@ -59,6 +59,10 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, ui= nt32_t dev_id, uint32_t viommu_type, uint32_t hwpt_id, uint32_t *out_hwpt, Error **errp); =20 +bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_id, uint64_t virt_id, + uint32_t *out_vdev_id, Error **errp); + bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, uint32_t hwpt_= id, bool start, Error **errp); bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id, --=20 2.34.1