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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 BL6PEPF0001AB71.mail.protection.outlook.com (10.167.242.164) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9587.10 via Frontend Transport; Sun, 1 Feb 2026 15:55:13 +0000 Received: from satlexmb08.amd.com (10.181.42.217) 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; Sun, 1 Feb 2026 09:55:04 -0600 Received: from xcbalucerop40x.xilinx.com (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17 via Frontend Transport; Sun, 1 Feb 2026 09:55:02 -0600 From: To: , , , , , , , , CC: Alejandro Lucero Subject: [PATCH v23 11/22] sfc: obtain decoder and region if committed by firmware Date: Sun, 1 Feb 2026 15:54:27 +0000 Message-ID: <20260201155438.2664640-12-alejandro.lucero-palau@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260201155438.2664640-1-alejandro.lucero-palau@amd.com> References: <20260201155438.2664640-1-alejandro.lucero-palau@amd.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB71:EE_|DS0PR12MB7606:EE_ X-MS-Office365-Filtering-Correlation-Id: baf0da76-7194-4354-c71c-08de61aa492d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|1800799024; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: ZcMwX0B4ktbmhzvjtv4lKIP2fg1hXGyUyt6UdCK7ylEPXiUhK99mKAXLJ4nM5t3KBFFb49QkYRvafLbY0AG0A1MFQ/5H5xhnf0C9xgdfGvuIYot/uQHJiSgrc4hbGxSj7VP+fgf6Ht2tK899m7DS8qrdciuSoedsxHzDdeaer5rJENzDd3UZhsC6a4MBkEhbMd7arXBNhU3fhAU7K5K+IOWsizjd74UDFyD624R6+UxMaC8jgXK4L5505Oftbj/CZTs/7lUhtoJtpfzufxm4TAup+bSE18JPaQK8Lv9MXTFSAFpY6OY+tsmmTuV8uEZ7OJwAKN2Q7jCRlug7u3UUSAEbGIXj7YhNO0KGF6CmMiP/AfCv2CFs+dXq8H65znB9ErxIegKqT64ZoCG0TqgJ9+sShgE1IgTLoMfKtJNFsvH2GcceFijz0M5a2HCMErD0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Feb 2026 15:55:13.2899 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: baf0da76-7194-4354-c71c-08de61aa492d 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: BL6PEPF0001AB71.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7606 From: Alejandro Lucero Check if device HDM is already committed during firmware/BIOS initialization. A CXL region should exist if so after memdev allocation/initialization. Get HPA from region and map it. Signed-off-by: Alejandro Lucero --- drivers/net/ethernet/sfc/efx_cxl.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c index a77ef4783fcb..3536eccf1b2a 100644 --- a/drivers/net/ethernet/sfc/efx_cxl.c +++ b/drivers/net/ethernet/sfc/efx_cxl.c @@ -19,6 +19,7 @@ int efx_cxl_init(struct efx_probe_data *probe_data) struct efx_nic *efx = &probe_data->efx; struct pci_dev *pci_dev = efx->pci_dev; struct efx_cxl *cxl; + struct range range; u16 dvsec; int rc; @@ -90,13 +91,38 @@ int efx_cxl_init(struct efx_probe_data *probe_data) return PTR_ERR(cxl->cxlmd); } - probe_data->cxl = cxl; + cxl->cxled = cxl_get_committed_decoder(cxl->cxlmd, &cxl->efx_region); + if (cxl->cxled) { + if (!cxl->efx_region) { + pci_err(pci_dev, "CXL found committed decoder without a region"); + return -ENODEV; + } + rc = cxl_get_region_range(cxl->efx_region, &range); + if (rc) { + pci_err(pci_dev, + "CXL getting regions params from a committed decoder failed"); + return rc; + } + + cxl->ctpio_cxl = ioremap(range.start, range.end - range.start + 1); + if (!cxl->ctpio_cxl) { + pci_err(pci_dev, "CXL ioremap region (%pra) failed", &range); + return -ENOMEM; + } + + probe_data->cxl = cxl; + } return 0; } void efx_cxl_exit(struct efx_probe_data *probe_data) { + if (!probe_data->cxl) + return; + + iounmap(probe_data->cxl->ctpio_cxl); + cxl_unregister_region(probe_data->cxl->efx_region); } MODULE_IMPORT_NS("CXL"); -- 2.34.1