From patchwork Tue Mar 11 14:10:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameerali Kolothum Thodi X-Patchwork-Id: 14011932 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E35E7C28B2E for ; Tue, 11 Mar 2025 14:12:17 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ts0Kv-0008R8-RL; Tue, 11 Mar 2025 10:12:01 -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 1ts0Kt-0008M9-Qu; Tue, 11 Mar 2025 10:12:00 -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 1ts0Ks-0006of-0S; Tue, 11 Mar 2025 10:11:59 -0400 Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4ZBwcM4DR0z6D8Yh; Tue, 11 Mar 2025 22:09:23 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id 30EE014034E; Tue, 11 Mar 2025 22:11:56 +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 15:11:48 +0100 To: , CC: , , , , , , , , , , , , , Subject: [RFC PATCH v2 01/20] backends/iommufd: Introduce iommufd_backend_alloc_viommu Date: Tue, 11 Mar 2025 14:10:26 +0000 Message-ID: <20250311141045.66620-2-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 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 X-Patchwork-Original-From: Shameer Kolothum via From: Shameerali Kolothum Thodi Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Nicolin Chen Add a helper to allocate a viommu object. Signed-off-by: Nicolin Chen Signed-off-by: Shameer Kolothum --- backends/iommufd.c | 25 +++++++++++++++++++++++++ backends/trace-events | 1 + include/system/iommufd.h | 4 ++++ 3 files changed, 30 insertions(+) diff --git a/backends/iommufd.c b/backends/iommufd.c index 3c23caef96..3fac08c96e 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -341,6 +341,31 @@ int iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t hwpt_id, return ret; } +bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_type, uint32_t hwpt_id, + uint32_t *out_viommu_id, Error **errp) +{ + int ret, fd = be->fd; + struct iommu_viommu_alloc alloc_viommu = { + .size = sizeof(alloc_viommu), + .type = viommu_type, + .dev_id = dev_id, + .hwpt_id = hwpt_id, + }; + + ret = ioctl(fd, IOMMU_VIOMMU_ALLOC, &alloc_viommu); + + trace_iommufd_backend_alloc_viommu(fd, viommu_type, dev_id, hwpt_id, + alloc_viommu.out_viommu_id, ret); + if (ret) { + error_setg_errno(errp, errno, "IOMMU_VIOMMU_ALLOC failed"); + return false; + } + + *out_viommu_id = alloc_viommu.out_viommu_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 5a23db6c8a..a835827540 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -19,3 +19,4 @@ iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (% iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)" iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, uint64_t size, uint64_t page_size, int ret) " iommufd=%d hwpt=%u iova=0x%"PRIx64" size=0x%"PRIx64" page_size=0x%"PRIx64" (%d)" iommufd_backend_invalidate_cache(int iommufd, uint32_t hwpt_id, uint32_t data_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t data_ptr, int ret) " iommufd=%d hwpt_id=%u data_type=%u entry_len=%u entry_num=%u done_num=%u data_ptr=0x%"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=%d type=%u dev_id=%u hwpt_id=%u viommu_id=%u (%d)" diff --git a/include/system/iommufd.h b/include/system/iommufd.h index b93421ac7c..7e5507f2db 100644 --- a/include/system/iommufd.h +++ b/include/system/iommufd.h @@ -55,6 +55,10 @@ bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint32_t dev_id, uint32_t data_type, uint32_t data_len, void *data_ptr, uint32_t *out_hwpt, Error **errp); +bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_type, uint32_t hwpt_id, + uint32_t *out_hwpt, 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,