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Wed, 14 May 2025 08:28:14 -0500 From: To: , , , , , , , , CC: Alejandro Lucero , Martin Habets , Edward Cree , "Jonathan Cameron" Subject: [PATCH v16 14/22] sfc: get endpoint decoder Date: Wed, 14 May 2025 14:27:35 +0100 Message-ID: <20250514132743.523469-15-alejandro.lucero-palau@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250514132743.523469-1-alejandro.lucero-palau@amd.com> References: <20250514132743.523469-1-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 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: BL6PEPF00020E63:EE_|PH7PR12MB6860:EE_ X-MS-Office365-Filtering-Correlation-Id: cfcd4af8-22ac-4e24-3422-08dd92eb2f8f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|7416014|82310400026|376014; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 May 2025 13:28:16.8906 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cfcd4af8-22ac-4e24-3422-08dd92eb2f8f 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF00020E63.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6860 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 | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c index 5635672b3fc3..20db9aa382ec 100644 --- a/drivers/net/ethernet/sfc/efx_cxl.c +++ b/drivers/net/ethernet/sfc/efx_cxl.c @@ -98,18 +98,33 @@ 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); cxl_put_root_decoder(cxl->cxlrd); - return -ENOSPC; + rc = -ENOSPC; + goto sfc_put_decoder; + } + + cxl->cxled = cxl_request_dpa(cxl->cxlmd, CXL_PARTMODE_RAM, + 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"); -- 2.34.1