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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 SA2PEPF00003AEB.mail.protection.outlook.com (10.167.248.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.8 via Frontend Transport; Sat, 19 Sep 2026 07:48:48 +0000 Received: from dcsm-trdripper1.amd.com (10.180.168.240) 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 15.2.2562.49; Sat, 19 Sep 2026 02:48:46 -0500 From: Muralidhara M K To: CC: , , Muralidhara M K , Mario Limonciello Subject: [PATCH v6 2/3] platform/x86/amd/hsmp: Route metric table through the client messages Date: Sat, 19 Sep 2026 13:18:17 +0530 Message-ID: <20260919074818.2541775-3-muralidhara.mk@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260919074818.2541775-1-muralidhara.mk@amd.com> References: <20260919074818.2541775-1-muralidhara.mk@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: 8bit Content-Type: text/plain X-ClientProxiedBy: satlexmb08.amd.com (10.181.42.217) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003AEB:EE_|SJ1PR12MB6241:EE_ X-MS-Office365-Filtering-Correlation-Id: 46300f44-d8dc-4795-d4f2-08df162270f8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|82310400026|376014|23010399003|1800799024|10067099003|11063799006|56012099006|3023799007|18002099003|22082099003; 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Add metric_tbl_msg and metric_dram_msg to struct hsmp_plat_desc, and have hsmp_metric_tbl_read_locked() and hsmp_get_tbl_dram_base() take the message ID from there instead of a shared constant, since the client set numbers these messages differently from the server set (05h/06h vs 24h/25h). Add enum ryzen_master_proto_versions, and gate the hsmp_get_tbl_dram_base() call in init_acpi() on RYZEN_MASTER_PROTO_VER1 for client platforms, guarding the existing HSMP_PROTO_VER6 clause with !is_client_platform(). proto_ver holds the Ryzen Master interface version on client platforms, a separate numbering space from enum hsmp_proto_versions, so an unguarded HSMP_PROTO_VER6 check could misread a future client interface version as a server protocol version. Signed-off-by: Muralidhara M K Reviewed-by: Mario Limonciello (AMD) --- arch/x86/include/uapi/asm/amd_hsmp.h | 9 +++++++++ drivers/platform/x86/amd/hsmp/acpi.c | 3 ++- drivers/platform/x86/amd/hsmp/hsmp.c | 14 ++++++++++---- 3 files changed, 21 insertions(+), 5 deletions(-) diff --git a/arch/x86/include/uapi/asm/amd_hsmp.h b/arch/x86/include/uapi/asm/amd_hsmp.h index 56317e9298b8..9641e5977c2e 100644 --- a/arch/x86/include/uapi/asm/amd_hsmp.h +++ b/arch/x86/include/uapi/asm/amd_hsmp.h @@ -95,6 +95,15 @@ enum hsmp_proto_versions { HSMP_PROTO_VER7 }; +/* + * Ryzen Master SMC interface version, reported by + * HSMP_CLIENT_GET_INTERFACE_VER. Separate numbering space from enum + * hsmp_proto_versions, which applies to the server set only. + */ +enum ryzen_master_proto_versions { + RYZEN_MASTER_PROTO_VER1 = 1, +}; + struct hsmp_msg_desc { int num_args; int response_sz; diff --git a/drivers/platform/x86/amd/hsmp/acpi.c b/drivers/platform/x86/amd/hsmp/acpi.c index 8257cd1da48e..8b4bf57c3485 100644 --- a/drivers/platform/x86/amd/hsmp/acpi.c +++ b/drivers/platform/x86/amd/hsmp/acpi.c @@ -557,7 +557,8 @@ static int init_acpi(struct device *dev) return ret; } - if (hsmp_pdev->proto_ver >= HSMP_PROTO_VER6) { + if ((is_client_platform() && hsmp_pdev->proto_ver >= RYZEN_MASTER_PROTO_VER1) || + (!is_client_platform() && hsmp_pdev->proto_ver >= HSMP_PROTO_VER6)) { ret = hsmp_get_tbl_dram_base(sock_ind); if (ret) dev_info(dev, "Failed to init metric table\n"); diff --git a/drivers/platform/x86/amd/hsmp/hsmp.c b/drivers/platform/x86/amd/hsmp/hsmp.c index 3e27287c0517..bb1f130806ad 100644 --- a/drivers/platform/x86/amd/hsmp/hsmp.c +++ b/drivers/platform/x86/amd/hsmp/hsmp.c @@ -184,6 +184,8 @@ struct hsmp_plat_desc { u32 num_msgs; u32 test_msg; u32 proto_ver_msg; + u32 metric_tbl_msg; + u32 metric_dram_msg; }; static const struct hsmp_plat_desc hsmp_desc_server = { @@ -191,6 +193,8 @@ static const struct hsmp_plat_desc hsmp_desc_server = { .num_msgs = HSMP_MSG_ID_MAX, .test_msg = HSMP_TEST, .proto_ver_msg = HSMP_GET_PROTO_VER, + .metric_tbl_msg = HSMP_GET_METRIC_TABLE, + .metric_dram_msg = HSMP_GET_METRIC_TABLE_DRAM_ADDR, }; /* The client drives a different mailbox with the Ryzen Master SMC message set */ @@ -199,6 +203,8 @@ static const struct hsmp_plat_desc hsmp_desc_client = { .num_msgs = HSMP_CLIENT_MSG_ID_MAX, .test_msg = HSMP_CLIENT_TEST, .proto_ver_msg = HSMP_CLIENT_GET_INTERFACE_VER, + .metric_tbl_msg = HSMP_CLIENT_GET_METRICS_TABLE, + .metric_dram_msg = HSMP_CLIENT_GET_METRICS_TABLE_DRAM_ADDR, }; static struct hsmp_plat_device hsmp_pdev; @@ -753,11 +759,11 @@ static ssize_t hsmp_metric_tbl_read_locked(struct hsmp_socket *sock, char *buf, return -EINVAL; } - msg.msg_id = HSMP_GET_METRIC_TABLE; + msg.msg_id = hsmp_desc()->metric_tbl_msg; msg.sock_ind = sock->sock_ind; /* - * HSMP_GET_METRIC_TABLE makes firmware refill this socket's shared + * The metric table message makes firmware refill this socket's shared * metric DRAM region, which is then copied out below. Hold the * per-socket lock across the fill-and-copy so concurrent readers of the * same socket cannot return a torn snapshot. @@ -823,8 +829,8 @@ int hsmp_get_tbl_dram_base(u16 sock_ind) int ret; msg.sock_ind = sock_ind; - msg.response_sz = hsmp_msg_desc_table[HSMP_GET_METRIC_TABLE_DRAM_ADDR].response_sz; - msg.msg_id = HSMP_GET_METRIC_TABLE_DRAM_ADDR; + msg.msg_id = hsmp_desc()->metric_dram_msg; + msg.response_sz = get_msg_desc(msg.msg_id)->response_sz; ret = hsmp_send_message_locked(&msg); if (ret) -- 2.34.1