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Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH V1 1/2] platform/x86/amd/pmf: Introduce new interface to export NPU metrics Content-Language: en-US To: =?UTF-8?Q?Ilpo_J=c3=a4rvinen?= CC: Hans de Goede , , , , "Shyam Sundar S K" , LKML , , , , , , , Patil Rajesh Reddy References: <20251211175802.1760860-1-lizhi.hou@amd.com> <20251211175802.1760860-2-lizhi.hou@amd.com> <5217a9b3-8489-fd18-051a-46a497ff56bd@linux.intel.com> From: Lizhi Hou In-Reply-To: <5217a9b3-8489-fd18-051a-46a497ff56bd@linux.intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PEPF00000016:EE_|DM3PR12MB9413:EE_ X-MS-Office365-Filtering-Correlation-Id: d575851c-de9a-4375-2f57-08de38e89833 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?NGVXZ2w3MURRQ2kzMmxvckRucWFqVXdjU1YxT2RFaGFiTFR3RGxsQ1FoMmho?= =?utf-8?B?dDZ5VXdCaCsxdHJTNlREOTFDTGxOTUFiNVB6NHMyOE5tSTdWdjg5YmVpblMv?= =?utf-8?B?a1pjNzl2WTJrSGQ5bmNkQU81WWRsWmFPaUFhOGtCOVQyNUYweWpqZE56a1Z4?= =?utf-8?B?Qzk3UThQd2ZqclgyVmZKMHpBNEp2Q2FpMDY5M3lRM0RxQnNuYkxWSDhFVDZm?= =?utf-8?B?amcyMk9rZVVyUUcvYWw4cDRwUDlUMnErSjRlclpnNThSMWl5T3NjU05lcVJ5?= =?utf-8?B?bmw3S2o5dkVhd3RJcFZWbFh1OGVKTXlqaEdZQ0pkZ2pTcWw0T25GdDB1TXJW?= =?utf-8?B?U1dxeVlTaWtDY013Z3pxdEFlMTlFVnNvT2UxbkpmQXZhRDZNS2tkbHI1M2hl?= =?utf-8?B?UFh3OU5uUXRBU3laRVN4VkNCTzdiYUJPUmV6MXZtWW9NYTNxSUlnQnpzVU5C?= =?utf-8?B?STBSQ2NoN2cvKzgrQXd0RVE1UEJkazA2bkkvek1YbWwyVit4RUVhd2RqL3RH?= =?utf-8?B?Tis1QVJ1TVpJZzNaSHZNVXlsS0RLYVNSdVVjTmErTWtEb2Y3eGxWMU9EcXRW?= =?utf-8?B?NUVBZ3FmVmN5anh3NVBsZVdkV041NWZ6TzBLbXJOSzlMQi91amJXZzI1YzBk?= =?utf-8?B?eTBvZCtTMzFBSGViM2ZxQW45NFE0TWd1TDhhd0liTE1MVE1XSDU2ckt3TVMw?= =?utf-8?B?OTh6V0RPY1dIdFIrQkpIblIzM0E4SDB5OFRpcmVyb0c2RFpUWlZ5cVc5QnE0?= =?utf-8?B?eGZscEdSc3RrbEg2M2xydWFFaDA2VG83Z1hCWWU4VzIzc1lXQ0c3R2QyOXp4?= =?utf-8?B?K3A3V3JJaU9lUlFreTl1WndUZWtqYStBdnpCdHJnS1ptU0ZjYS9oQTBjOXlZ?= =?utf-8?B?Wnh1VUNsYlNFbDdMbWNFUXhWOWZaa1B5YkkvOVl2YmtHTEFLbVdvNFVMMlo5?= =?utf-8?B?cjVzNUNvcmhveGFORWhVNUpVbzltN2xleUplc3VWRWlOUllCNXVvc3ViaERk?= =?utf-8?B?cDdhMWl2T0pMU1IyRG52SGFsQmpiVGN6ZWplMUFtWmk4OVBHcDBLUkt5eEd4?= =?utf-8?B?Z0s5VlBIWml0ZVR2YllBejkwenliMHhZS2pvVjBDcUZJK1czTHNFZlhlNklW?= =?utf-8?B?Q1VhcGRPVk10bHlJbENzWmlqK0NVaEJHVHZwTGdwdXowRCtGN2o4T3EzbWpx?= =?utf-8?B?RlZwMEtxcXArYmUvZElOUTk4QmFWNll6aVQxemFuVVNtbGVUSkx1R2htTkJm?= =?utf-8?B?enl4aHl0OHh1TjB4MU43UFpMR01PeHVGTWR2QXQzTW9pL2F1RktsOFJVS3ND?= =?utf-8?B?WEdrOW9QWXZKaVloeW44Titya1NyY3JFSTRRbjJMdjFqTHNuYk5pYWU4UlVn?= =?utf-8?B?Z0FyQWFuKzVrb0ZreWNDZHZERi8vZ20rWHFPWlhKRUlxVE10MEw3MzRiREFa?= =?utf-8?B?RjkzNWtUV2U4U0htZ2c1Qyt2cDNHT3VJeCszV1FmQzNzYUtnSHh0bi9Yam5F?= =?utf-8?B?NDZsTU5NQmVXUWxrc3JpOGdaT3VzUzBpZ0paM3BMR29PU3NLWTNWSjhLU0wv?= =?utf-8?B?N0hPbVhlUkdBTE1UclA5bjgyNmFBRnprOWJzdkloNGc5V2ZDcXg4ZFprWlVM?= =?utf-8?B?MnVybW9vZXhWSEUwY3BFdzF5ZVdkcUFKbWxsZ1RneTBtbFFyb2VLUjQwODgv?= =?utf-8?B?SXFISkVidHBUclRhNnNrV1RLQkFvWjE5MTBxRGhaNGQ3ZzIrQUFXRzZyR2NZ?= =?utf-8?B?TC8rVWY2Z0xZaFd1SlhKNmRHLzlUazBrcTNJYVk5cXpLUHVQN2wzN0lsc3B3?= =?utf-8?B?TW05RTEyNUZrOTcwaHYrVzdlTHhvK1h2UU9TVm1DRFBlRWM2N0FMektCMlNV?= =?utf-8?B?bUhwMlE3SnBkQnNhem9lZkhOUkxWN09TZEdwcER4MTlvekQxQVorUWVPcHNt?= =?utf-8?B?cDRCclJPYlJPc3dDU01iK0NWaHk1SFpjMHhVU0c3VWJlclNSQ2pISTVFZzZG?= =?utf-8?B?Z3VRbFdrSlJtSzhpK0lEbzlLN2xpeXNqMk92OVNWTzFzSlhxNm5KSjBzU2Vn?= =?utf-8?B?ZlA1VHAxOXhpM1MzdlVsOEh1YXFrcjVEbEtMT3AwZDJMTHo2RERGMEpaYWJk?= =?utf-8?Q?uPc8=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(36860700013)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Dec 2025 19:07:56.9961 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d575851c-de9a-4375-2f57-08de38e89833 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: CH3PEPF00000016.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB9413 On 12/11/25 10:28, Ilpo Järvinen wrote: > On Thu, 11 Dec 2025, Lizhi Hou wrote: > >> From: Shyam Sundar S K >> >> The PMF driver retrieves NPU metrics data from the PMFW. Introduce a new >> interface to make NPU metrics accessible to other drivers like AMDXDNA >> driver, which can access and utilize this information as needed. >> >> Reviewed-by: Mario Limonciello >> Co-developed-by: Patil Rajesh Reddy >> Signed-off-by: Patil Rajesh Reddy >> Signed-off-by: Shyam Sundar S K >> Signed-off-by: Lizhi Hou >> --- >> drivers/platform/x86/amd/pmf/core.c | 75 +++++++++++++++++++++++++++++ >> drivers/platform/x86/amd/pmf/pmf.h | 2 + >> include/linux/amd-pmf-io.h | 21 ++++++++ >> 3 files changed, 98 insertions(+) >> >> diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c >> index a6a5d416edf9..8e4ce91b3527 100644 >> --- a/drivers/platform/x86/amd/pmf/core.c >> +++ b/drivers/platform/x86/amd/pmf/core.c >> @@ -8,12 +8,15 @@ >> * Author: Shyam Sundar S K >> */ >> >> +#include >> +#include >> #include >> #include >> #include >> #include >> #include >> #include >> +#include >> #include >> #include "pmf.h" >> >> @@ -53,6 +56,8 @@ static bool force_load; >> module_param(force_load, bool, 0444); >> MODULE_PARM_DESC(force_load, "Force load this driver on supported older platforms (experimental)"); >> >> +static struct device *pmf_device; >> + >> static int amd_pmf_pwr_src_notify_call(struct notifier_block *nb, unsigned long event, void *data) >> { >> struct amd_pmf_dev *pmf = container_of(nb, struct amd_pmf_dev, pwr_src_notifier); >> @@ -314,6 +319,70 @@ int amd_pmf_init_metrics_table(struct amd_pmf_dev *dev) >> return 0; >> } >> >> +static int is_npu_metrics_supported(struct amd_pmf_dev *pdev) >> +{ >> + switch (pdev->cpu_id) { >> + case PCI_DEVICE_ID_AMD_1AH_M20H_ROOT: >> + case PCI_DEVICE_ID_AMD_1AH_M60H_ROOT: >> + return 0; >> + default: >> + return -EOPNOTSUPP; >> + } >> +} >> + >> +static int amd_pmf_get_smu_metrics(struct amd_pmf_dev *dev, struct amd_pmf_npu_metrics *data) >> +{ >> + int ret, i; >> + >> + guard(mutex)(&dev->metrics_mutex); >> + >> + if (is_npu_metrics_supported(dev)) >> + return -EOPNOTSUPP; >> + >> + ret = amd_pmf_set_dram_addr(dev, true); >> + if (ret) >> + return ret; >> + >> + memset(dev->buf, 0, dev->mtable_size); >> + >> + /* Send SMU command to get NPU metrics */ >> + ret = amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, SET_CMD, METRICS_TABLE_ID, NULL); >> + if (ret) { >> + dev_err(dev->dev, "SMU command failed to get NPU metrics: %d\n", ret); >> + return ret; >> + } >> + >> + memcpy(&dev->m_table_v2, dev->buf, dev->mtable_size); >> + >> + data->npuclk_freq = dev->m_table_v2.npuclk_freq; >> + for (i = 0; i < ARRAY_SIZE(data->npu_busy); i++) >> + data->npu_busy[i] = dev->m_table_v2.npu_busy[i]; >> + data->npu_power = dev->m_table_v2.npu_power; >> + data->mpnpuclk_freq = dev->m_table_v2.mpnpuclk_freq; >> + data->npu_reads = dev->m_table_v2.npu_reads; >> + data->npu_writes = dev->m_table_v2.npu_writes; >> + >> + return 0; >> +} >> + >> +int amd_pmf_get_npu_data(struct amd_pmf_npu_metrics *info) >> +{ >> + struct amd_pmf_dev *pdev; >> + >> + if (!info) >> + return -EINVAL; >> + >> + if (!pmf_device) >> + return -ENODEV; >> + >> + pdev = dev_get_drvdata(pmf_device); >> + if (!pdev) >> + return -ENODEV; >> + >> + return amd_pmf_get_smu_metrics(pdev, info); >> +} >> +EXPORT_SYMBOL_GPL(amd_pmf_get_npu_data); >> + >> static int amd_pmf_suspend_handler(struct device *dev) >> { >> struct amd_pmf_dev *pdev = dev_get_drvdata(dev); >> @@ -469,6 +538,10 @@ static int amd_pmf_probe(struct platform_device *pdev) >> mutex_init(&dev->update_mutex); >> mutex_init(&dev->cb_mutex); >> >> + err = devm_mutex_init(dev->dev, &dev->metrics_mutex); >> + if (err) >> + return err; >> + >> apmf_acpi_init(dev); >> platform_set_drvdata(pdev, dev); >> amd_pmf_dbgfs_register(dev); >> @@ -477,6 +550,8 @@ static int amd_pmf_probe(struct platform_device *pdev) >> if (is_apmf_func_supported(dev, APMF_FUNC_SBIOS_HEARTBEAT_V2)) >> amd_pmf_notify_sbios_heartbeat_event_v2(dev, ON_LOAD); >> >> + pmf_device = dev->dev; >> + >> dev_info(dev->dev, "registered PMF device successfully\n"); >> >> return 0; >> diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h >> index f07e9f4c660a..0354cc5dc79e 100644 >> --- a/drivers/platform/x86/amd/pmf/pmf.h >> +++ b/drivers/platform/x86/amd/pmf/pmf.h >> @@ -12,6 +12,7 @@ >> #define PMF_H >> >> #include >> +#include >> #include >> #include >> #include >> @@ -412,6 +413,7 @@ struct amd_pmf_dev { >> struct apmf_sbios_req_v1 req1; >> struct pmf_bios_inputs_prev cb_prev; /* To preserve custom BIOS inputs */ >> bool cb_flag; /* To handle first custom BIOS input */ >> + struct mutex metrics_mutex; > This files seems to lack include for struct mutex (despite using them > already so please add it finally there :-)). Sure, I will add it. Thanks, Lizhi > >> }; >> >> struct apmf_sps_prop_granular_v2 { >> diff --git a/include/linux/amd-pmf-io.h b/include/linux/amd-pmf-io.h >> index 6fa510f419c0..55198d2875cc 100644 >> --- a/include/linux/amd-pmf-io.h >> +++ b/include/linux/amd-pmf-io.h >> @@ -61,5 +61,26 @@ enum laptop_placement { >> LP_UNDEFINED, >> }; >> >> +/** >> + * struct amd_pmf_npu_metrics: Get NPU metrics data from PMF driver >> + * @npuclk_freq: NPU clock frequency [MHz] >> + * @npu_busy: NPU busy % [0-100] >> + * @npu_power: NPU power [mW] >> + * @mpnpuclk_freq: MPNPU [MHz] >> + * @npu_reads: NPU read bandwidth [MB/sec] >> + * @npu_writes: NPU write bandwidth [MB/sec] >> + */ >> +struct amd_pmf_npu_metrics { >> + u16 npuclk_freq; >> + u16 npu_busy[8]; >> + u16 npu_power; >> + u16 mpnpuclk_freq; >> + u16 npu_reads; >> + u16 npu_writes; >> +}; >> + >> int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op); >> + >> +/* AMD PMF and NPU interface */ >> +int amd_pmf_get_npu_data(struct amd_pmf_npu_metrics *info); >> #endif >>