diff mbox series

[v10,17/26] sfc: get endpoint decoder

Message ID 20250205151950.25268-18-alucerop@amd.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series cxl: add type2 device basic support | expand

Checks

Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Alejandro Lucero Palau Feb. 5, 2025, 3:19 p.m. UTC 
From: Alejandro Lucero <alucerop@amd.com>

Use cxl api for getting DPA (Device Physical Address) to use through an
endpoint decoder.

Signed-off-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Martin Habets <habetsm.xilinx@gmail.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/net/ethernet/sfc/efx_cxl.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index a9ff84143e5d..984dc2ee522d 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -121,6 +121,14 @@  int efx_cxl_init(struct efx_probe_data *probe_data)
 		goto err_regs;
 	}
 
+	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);
+		cxl_put_root_decoder(cxl->cxlrd);
+		goto err_regs;
+	}
+
 	probe_data->cxl = cxl;
 
 	return 0;
@@ -134,6 +142,7 @@  int efx_cxl_init(struct efx_probe_data *probe_data)
 void efx_cxl_exit(struct efx_probe_data *probe_data)
 {
 	if (probe_data->cxl) {
+		cxl_dpa_free(probe_data->cxl->cxled);
 		cxl_put_root_decoder(probe_data->cxl->cxlrd);
 		kfree(probe_data->cxl);
 	}