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Fri, 21 Oct 2022 13:56:31 -0500 From: Terry Bowman To: , , , , , CC: , , , , , , , , Subject: [PATCH 1/5] cxl/acpi: Set ACPI's CXL _OSC to indicate CXL1.1 support Date: Fri, 21 Oct 2022 13:56:11 -0500 Message-ID: <20221021185615.605233-2-terry.bowman@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221021185615.605233-1-terry.bowman@amd.com> References: <20221021185615.605233-1-terry.bowman@amd.com> MIME-Version: 1.0 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-TrafficTypeDiagnostic: BN8NAM11FT053:EE_|CY5PR12MB6154:EE_ X-MS-Office365-Filtering-Correlation-Id: a0832e09-4206-4961-6717-08dab395f8e9 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(396003)(346002)(39860400002)(376002)(136003)(451199015)(46966006)(36840700001)(40470700004)(36756003)(8676002)(54906003)(36860700001)(110136005)(316002)(40480700001)(8936002)(7416002)(2906002)(2616005)(26005)(44832011)(426003)(47076005)(5660300002)(186003)(40460700003)(336012)(6666004)(70206006)(16526019)(70586007)(1076003)(4326008)(41300700001)(83380400001)(86362001)(7696005)(356005)(81166007)(82310400005)(82740400003)(478600001)(36900700001);DIR:OUT;SFP:1101; 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The CXL support _OSC includes a field to indicate CXL1.1 RCH RCD support. The OS sets this bit to 1 if it supports access to RCD and RCH Port registers.[1] FW can potentially change it's operation depending on the _OSC support setting reported by the OS. The ACPI driver does not currently set the ACPI _OSC support to indicate CXL1.1 RCD RCH support. Change the capability reported to include CXL1.1. [1] CXL3.0 Table 9-26 'Interpretation of CXL _OSC Support Field' Signed-off-by: Terry Bowman --- drivers/acpi/pci_root.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c8385ef54c37..094a59b216ae 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -492,6 +492,7 @@ static u32 calculate_cxl_support(void) u32 support; support = OSC_CXL_2_0_PORT_DEV_REG_ACCESS_SUPPORT; + support |= OSC_CXL_1_1_PORT_REG_ACCESS_SUPPORT; if (pci_aer_available()) support |= OSC_CXL_PROTOCOL_ERR_REPORTING_SUPPORT; if (IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE))