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Mon, 10 Mar 2025 16:04:09 -0500 From: To: , , , , , , , , CC: Alejandro Lucero , Martin Habets , Edward Cree , "Jonathan Cameron" Subject: [PATCH v11 14/23] sfc: get endpoint decoder Date: Mon, 10 Mar 2025 21:03:31 +0000 Message-ID: <20250310210340.3234884-15-alejandro.lucero-palau@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250310210340.3234884-1-alejandro.lucero-palau@amd.com> References: <20250310210340.3234884-1-alejandro.lucero-palau@amd.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Received-SPF: None (SATLEXMB05.amd.com: alejandro.lucero-palau@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000146:EE_|SJ5PPF4C71815F9:EE_ X-MS-Office365-Filtering-Correlation-Id: 38dbbb34-ea76-4770-5dd0-08dd60171b2a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|82310400026|376014|36860700013|1800799024; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Mar 2025 21:04:11.1972 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 38dbbb34-ea76-4770-5dd0-08dd60171b2a 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: CH2PEPF00000146.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ5PPF4C71815F9 From: Alejandro Lucero Use cxl api for getting DPA (Device Physical Address) to use through an endpoint decoder. Signed-off-by: Alejandro Lucero Reviewed-by: Martin Habets Acked-by: Edward Cree Reviewed-by: Jonathan Cameron --- drivers/net/ethernet/sfc/efx_cxl.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c index 4395435af576..20eb1dfa8c65 100644 --- a/drivers/net/ethernet/sfc/efx_cxl.c +++ b/drivers/net/ethernet/sfc/efx_cxl.c @@ -104,19 +104,31 @@ int efx_cxl_init(struct efx_probe_data *probe_data) pci_err(pci_dev, "%s: not enough free HPA space %pap < %u\n", __func__, &max_size, EFX_CTPIO_BUFFER_SIZE); rc = -ENOSPC; - cxl_put_root_decoder(cxl->cxlrd); - return rc; + goto sfc_put_decoder; + } + + cxl->cxled = cxl_request_dpa(cxl->cxlmd, true, EFX_CTPIO_BUFFER_SIZE); + if (IS_ERR(cxl->cxled)) { + pci_err(pci_dev, "CXL accel request DPA failed"); + rc = PTR_ERR(cxl->cxled); + goto sfc_put_decoder; } probe_data->cxl = cxl; return 0; + +sfc_put_decoder: + cxl_put_root_decoder(cxl->cxlrd); + return rc; } void efx_cxl_exit(struct efx_probe_data *probe_data) { - if (probe_data->cxl) + if (probe_data->cxl) { + cxl_dpa_free(probe_data->cxl->cxled); cxl_put_root_decoder(probe_data->cxl->cxlrd); + } } MODULE_IMPORT_NS("CXL");