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Tsirkin" , Zhu Lingshan , Stefano Garzarella , Xie Yongji , Eli Cohen , Si-Wei Liu , Parav Pandit , Longpeng , , , , Subject: [RFC PATCH v2 07/19] vdpa: introduce config operations for associating ASID to a virtqueue group Date: Fri, 25 Feb 2022 02:52:47 +0530 Message-ID: <20220224212314.1326-8-gdawar@xilinx.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20220224212314.1326-1-gdawar@xilinx.com> References: <20201216064818.48239-1-jasowang@redhat.com> <20220224212314.1326-1-gdawar@xilinx.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d153978a-acd1-4fd9-9738-08d9f7dc31a2 X-MS-TrafficTypeDiagnostic: CY4PR02MB2885:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.62.198;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapexch01.xlnx.xilinx.com;PTR:unknown-62-198.xilinx.com;CAT:NONE;SFS:(13230001)(4636009)(36840700001)(40470700004)(46966006)(36860700001)(83380400001)(47076005)(54906003)(426003)(36756003)(44832011)(2906002)(316002)(7416002)(186003)(2616005)(9786002)(8936002)(7696005)(40460700003)(70586007)(82310400004)(7636003)(1076003)(70206006)(26005)(4326008)(109986005)(356005)(508600001)(5660300002)(8676002)(336012)(6666004)(102446001)(266003);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2022 21:25:34.6459 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d153978a-acd1-4fd9-9738-08d9f7dc31a2 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT013.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR02MB2885 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces a new bus operation to allow the vDPA bus driver to associate an ASID to a virtqueue group. Signed-off-by: Jason Wang Signed-off-by: Gautam Dawar --- include/linux/vdpa.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index de22ca1a8ef3..7386860c3995 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -239,6 +239,12 @@ struct vdpa_map_file { * @vdev: vdpa device * Returns the iova range supported by * the device. + * @set_group_asid: Set address space identifier for a + * virtqueue group + * @vdev: vdpa device + * @group: virtqueue group + * @asid: address space id for this group + * Returns integer: success (0) or error (< 0) * @set_map: Set device memory mapping (optional) * Needed for device that using device * specific DMA translation (on-chip IOMMU) @@ -321,6 +327,10 @@ struct vdpa_config_ops { u64 iova, u64 size, u64 pa, u32 perm, void *opaque); int (*dma_unmap)(struct vdpa_device *vdev, unsigned int asid, u64 iova, u64 size); + int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group, + unsigned int asid); + + /* Free device resources */ void (*free)(struct vdpa_device *vdev); -- 2.25.0