common/sfc_efx/base: allow getting VNIC MCDI client handles

[dpdk.git] / drivers / common / sfc_efx / base / efx_mcdi.c

diff --git a/drivers/common/sfc_efx/base/efx_mcdi.c b/drivers/common/sfc_efx/base/efx_mcdi.c
index 69bf7ce..cdf7181 100644 (file)
--- a/drivers/common/sfc_efx/base/efx_mcdi.c
+++ b/drivers/common/sfc_efx/base/efx_mcdi.c
@@ -647,6 +647,79 @@ efx_mcdi_request_abort(
        return (aborted);
 }
 
+       __checkReturn   efx_rc_t
+efx_mcdi_get_client_handle(
+       __in            efx_nic_t *enp,
+       __in            efx_pcie_interface_t intf,
+       __in            uint16_t pf,
+       __in            uint16_t vf,
+       __out           uint32_t *handle)
+{
+       efx_mcdi_req_t req;
+       EFX_MCDI_DECLARE_BUF(payload,
+           MC_CMD_GET_CLIENT_HANDLE_IN_LEN,
+           MC_CMD_GET_CLIENT_HANDLE_OUT_LEN);
+       efx_rc_t rc;
+
+       if (handle == NULL) {
+               rc = EINVAL;
+               goto fail1;
+       }
+
+       req.emr_cmd = MC_CMD_GET_CLIENT_HANDLE;
+       req.emr_in_buf = payload;
+       req.emr_in_length = MC_CMD_GET_CLIENT_HANDLE_IN_LEN;
+       req.emr_out_buf = payload;
+       req.emr_out_length = MC_CMD_GET_CLIENT_HANDLE_OUT_LEN;
+
+       MCDI_IN_SET_DWORD(req, GET_CLIENT_HANDLE_IN_TYPE,
+           MC_CMD_GET_CLIENT_HANDLE_IN_TYPE_FUNC);
+       MCDI_IN_SET_WORD(req, GET_CLIENT_HANDLE_IN_FUNC_PF, pf);
+       MCDI_IN_SET_WORD(req, GET_CLIENT_HANDLE_IN_FUNC_VF, vf);
+       MCDI_IN_SET_DWORD(req, GET_CLIENT_HANDLE_IN_FUNC_INTF, intf);
+
+       efx_mcdi_execute(enp, &req);
+
+       if (req.emr_rc != 0) {
+               rc = req.emr_rc;
+               goto fail2;
+       }
+
+       if (req.emr_out_length_used < MC_CMD_GET_CLIENT_HANDLE_OUT_LEN) {
+               rc = EMSGSIZE;
+               goto fail3;
+       }
+
+       *handle = MCDI_OUT_DWORD(req, GET_CLIENT_HANDLE_OUT_HANDLE);
+
+       return 0;
+fail3:
+       EFSYS_PROBE(fail3);
+fail2:
+       EFSYS_PROBE(fail2);
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+       return (rc);
+}
+
+       __checkReturn   efx_rc_t
+efx_mcdi_get_own_client_handle(
+       __in            efx_nic_t *enp,
+       __out           uint32_t *handle)
+{
+       efx_rc_t rc;
+
+       rc = efx_mcdi_get_client_handle(enp, PCIE_INTERFACE_CALLER,
+           PCIE_FUNCTION_PF_NULL, PCIE_FUNCTION_VF_NULL, handle);
+       if (rc != 0)
+               goto fail1;
+
+       return (0);
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+       return (rc);
+}
+
                        void
 efx_mcdi_get_timeout(
        __in            efx_nic_t *enp,