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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by CO1PEPF000044FA.mail.protection.outlook.com (10.167.241.200) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9520.0 via Frontend Transport; Mon, 5 Jan 2026 17:30:17 +0000 Received: from satlexmb07.amd.com (10.181.42.216) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Mon, 5 Jan 2026 11:30:09 -0600 Received: from xsjlizhih51.xilinx.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Mon, 5 Jan 2026 09:30:08 -0800 From: Lizhi Hou To: , , , , CC: Lizhi Hou , , , , , , , , , Mario Limonciello Subject: [PATCH V3 2/2] accel/amdxdna: Add IOCTL to retrieve realtime NPU power estimate Date: Mon, 5 Jan 2026 09:29:56 -0800 Message-ID: <20260105172956.3732123-3-lizhi.hou@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260105172956.3732123-1-lizhi.hou@amd.com> References: <20260105172956.3732123-1-lizhi.hou@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044FA:EE_|PH7PR12MB6834:EE_ X-MS-Office365-Filtering-Correlation-Id: d15906cd-b725-4b1f-090e-08de4c80184a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|376014; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jan 2026 17:30:17.9455 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d15906cd-b725-4b1f-090e-08de4c80184a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044FA.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6834 Content-Type: text/plain; charset="utf-8" The AMD PMF driver provides an interface to obtain realtime power estimates for the NPU. Expose this information to userspace through a new DRM_IOCTL_AMDXDNA_GET_INFO parameter, allowing applications to query the current NPU power level. Reviewed-by: Mario Limonciello (AMD) Reviewed-by: Shyam Sundar S K Signed-off-by: Lizhi Hou --- drivers/accel/amdxdna/aie2_pci.c | 29 +++++++++++++++++++++++++ drivers/accel/amdxdna/aie2_pci.h | 20 +++++++++++++++++ drivers/accel/amdxdna/amdxdna_pci_drv.c | 3 ++- 3 files changed, 51 insertions(+), 1 deletion(-) diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_= pci.c index 81a8e4137bfd..55fbc8f0f455 100644 --- a/drivers/accel/amdxdna/aie2_pci.c +++ b/drivers/accel/amdxdna/aie2_pci.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -777,6 +778,31 @@ static int aie2_get_clock_metadata(struct amdxdna_clie= nt *client, return ret; } =20 +static int aie2_get_sensors(struct amdxdna_client *client, + struct amdxdna_drm_get_info *args) +{ + struct amdxdna_drm_query_sensor sensor =3D {}; + int ret; + + if (args->buffer_size < sizeof(sensor)) + return -EINVAL; + + ret =3D AIE2_GET_PMF_NPU_DATA(npu_power, sensor.input); + if (ret) + return ret; + sensor.type =3D AMDXDNA_SENSOR_TYPE_POWER; + sensor.unitm =3D -3; + scnprintf(sensor.label, sizeof(sensor.label), "Total Power"); + scnprintf(sensor.units, sizeof(sensor.units), "mW"); + + if (copy_to_user(u64_to_user_ptr(args->buffer), &sensor, sizeof(sensor))) + return -EFAULT; + + args->buffer_size =3D sizeof(sensor); + + return 0; +} + static int aie2_hwctx_status_cb(struct amdxdna_hwctx *hwctx, void *arg) { struct amdxdna_drm_hwctx_entry *tmp __free(kfree) =3D NULL; @@ -980,6 +1006,9 @@ static int aie2_get_info(struct amdxdna_client *client= , struct amdxdna_drm_get_i case DRM_AMDXDNA_QUERY_CLOCK_METADATA: ret =3D aie2_get_clock_metadata(client, args); break; + case DRM_AMDXDNA_QUERY_SENSORS: + ret =3D aie2_get_sensors(client, args); + break; case DRM_AMDXDNA_QUERY_HW_CONTEXTS: ret =3D aie2_get_hwctx_status(client, args); break; diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_= pci.h index a929fa98a121..08122c249009 100644 --- a/drivers/accel/amdxdna/aie2_pci.h +++ b/drivers/accel/amdxdna/aie2_pci.h @@ -7,6 +7,7 @@ #define _AIE2_PCI_H_ =20 #include +#include #include =20 #include "amdxdna_mailbox.h" @@ -46,6 +47,25 @@ pci_resource_len(NDEV2PDEV(_ndev), (_ndev)->xdna->dev_info->mbox_bar); \ }) =20 +#if IS_ENABLED(CONFIG_AMD_PMF) +#define AIE2_GET_PMF_NPU_DATA(field, val) \ +({ \ + struct amd_pmf_npu_metrics _npu_metrics; \ + int _ret; \ + \ + _ret =3D amd_pmf_get_npu_data(&_npu_metrics); \ + val =3D _ret ? U32_MAX : _npu_metrics.field; \ + (_ret); \ +}) +#else +#define SENSOR_DEFAULT_npu_power U32_MAX +#define AIE2_GET_PMF_NPU_DATA(field, val) \ +({ \ + val =3D SENSOR_DEFAULT_##field; \ + (-EOPNOTSUPP); \ +}) +#endif + enum aie2_smu_reg_idx { SMU_CMD_REG =3D 0, SMU_ARG_REG, diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdn= a/amdxdna_pci_drv.c index 7d59764d7869..053f72a31a5f 100644 --- a/drivers/accel/amdxdna/amdxdna_pci_drv.c +++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c @@ -32,9 +32,10 @@ MODULE_FIRMWARE("amdnpu/17f0_20/npu.sbin"); * 0.4: Support getting resource information * 0.5: Support getting telemetry data * 0.6: Support preemption + * 0.7: Support getting power data */ #define AMDXDNA_DRIVER_MAJOR 0 -#define AMDXDNA_DRIVER_MINOR 6 +#define AMDXDNA_DRIVER_MINOR 7 =20 /* * Bind the driver base on (vendor_id, device_id) pair and later use the --=20 2.34.1