diff mbox series

[v6,18/28] sfc: get endpoint decoder

Message ID 20241202171222.62595-19-alejandro.lucero-palau@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

Lucero Palau, Alejandro Dec. 2, 2024, 5:12 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>
---
 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 79b93d92f9c2..6ca23874d0c7 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -120,6 +120,14 @@  int efx_cxl_init(struct efx_probe_data *probe_data)
 		goto err3;
 	}
 
+	cxl->cxled = cxl_request_dpa(cxl->cxlmd, true, EFX_CTPIO_BUFFER_SIZE,
+				     EFX_CTPIO_BUFFER_SIZE);
+	if (IS_ERR_OR_NULL(cxl->cxled)) {
+		pci_err(pci_dev, "CXL accel request DPA failed");
+		rc = PTR_ERR(cxl->cxlrd);
+		goto err3;
+	}
+
 	probe_data->cxl = cxl;
 
 	return 0;
@@ -136,6 +144,7 @@  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_release_resource(probe_data->cxl->cxlds, CXL_RES_RAM);
 		kfree(probe_data->cxl->cxlds);
 		kfree(probe_data->cxl);