[PATCH v9 24/27] sfc: create cxl region

alejandro.lucero-palau
2024-12-30T21:45:35Z

From: Alejandro Lucero <alucerop@amd.com>

Use cxl api for creating a region using the endpoint decoder related to
a DPA range specifying no DAX device should be created.

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 | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index f8f48915d21a..30d51dc94b43 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -129,10 +129,19 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
goto err_memdev;
}

+ cxl->efx_region = cxl_create_region(cxl->cxlrd, cxl->cxled, true);
+ if (IS_ERR(cxl->efx_region)) {
+ pci_err(pci_dev, "CXL accel create region failed");
+ rc = PTR_ERR(cxl->efx_region);
+ goto err_region;
+ }
+
probe_data->cxl = cxl;

return 0;

+err_region:
+ cxl_dpa_free(cxl->cxled);
err_memdev:
cxl_release_resource(cxl->cxlds, CXL_RES_RAM);
err_resource_set:
@@ -145,6 +154,7 @@ 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_accel_region_detach(probe_data->cxl->cxled);
cxl_dpa_free(probe_data->cxl->cxled);
cxl_release_resource(probe_data->cxl->cxlds, CXL_RES_RAM);
kfree(probe_data->cxl->cxlds);
--
2.17.1