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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT009.mail.protection.outlook.com (10.13.176.65) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5417.15 via Frontend Transport; Tue, 12 Jul 2022 15:00:14 +0000 Received: from jatayu.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Tue, 12 Jul 2022 09:59:55 -0500 From: Shyam Sundar S K To: , CC: , , "Shyam Sundar S K" Subject: [PATCH v1 14/15] platform/x86/amd/pmf: Force load driver on older supported platforms Date: Tue, 12 Jul 2022 20:28:46 +0530 Message-ID: <20220712145847.3438544-15-Shyam-sundar.S-k@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220712145847.3438544-1-Shyam-sundar.S-k@amd.com> References: <20220712145847.3438544-1-Shyam-sundar.S-k@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 141a80e4-a6b1-4d1a-fec2-08da641739e4 X-MS-TrafficTypeDiagnostic: BN8PR12MB3635:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jul 2022 15:00:14.3899 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 141a80e4-a6b1-4d1a-fec2-08da641739e4 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT009.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3635 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Some of the older platforms with _HID "AMDI0100" PMF driver can be force loaded by interested users but only for experimental purposes. Signed-off-by: Shyam Sundar S K --- drivers/platform/x86/amd/pmf/core.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c index 2a3dacfb2005..ef50d67f6013 100644 --- a/drivers/platform/x86/amd/pmf/core.c +++ b/drivers/platform/x86/amd/pmf/core.c @@ -39,6 +39,7 @@ #define AMD_PMF_RESULT_FAILED 0xFF /* List of supported CPU ids */ +#define AMD_CPU_ID_RMB 0x14b5 #define AMD_CPU_ID_PS 0x14e8 #define PMF_MSG_DELAY_MIN_US 50 @@ -52,6 +53,11 @@ static int metrics_table_loop_ms = 1000; module_param(metrics_table_loop_ms, int, 0644); MODULE_PARM_DESC(metrics_table_loop_ms, " Metrics Table sample size time (default = 1000ms) "); +/* Force load on supported older platforms */ +static bool force_load; +module_param(force_load, bool, 0444); +MODULE_PARM_DESC(force_load, " Force load this driver on supported older platforms (experimental) "); + #ifdef CONFIG_DEBUG_FS static int current_power_limits_show(struct seq_file *seq, void *unused) { @@ -240,6 +246,7 @@ int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32 } static const struct pci_device_id pmf_pci_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RMB) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PS) }, { } }; @@ -313,6 +320,7 @@ static void amd_pmf_deinit_features(struct amd_pmf_dev *dev) } static const struct acpi_device_id amd_pmf_acpi_ids[] = { + {"AMDI0100", 0x100}, {"AMDI0102", 0}, { } }; @@ -320,6 +328,7 @@ MODULE_DEVICE_TABLE(acpi, amd_pmf_acpi_ids); static int amd_pmf_probe(struct platform_device *pdev) { + const struct acpi_device_id *id; struct amd_pmf_dev *dev; struct pci_dev *rdev; u32 base_addr_lo; @@ -328,6 +337,13 @@ static int amd_pmf_probe(struct platform_device *pdev) u32 val; int err; + id = acpi_match_device(amd_pmf_acpi_ids, &pdev->dev); + if (!id) + return -ENODEV; + + if (id->driver_data == 0x100 && !force_load) + return -ENODEV; + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; -- 2.25.1