net/sfc/base: move RxDP config get to EF10 NIC code

[dpdk.git] / drivers / net / sfc / base / ef10_nic.c

diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 311132d..8b9ef15 100644 (file)
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -420,6 +420,64 @@ fail2:
 fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);
 
+       return (rc);
+}
+
+       __checkReturn   efx_rc_t
+efx_mcdi_get_rxdp_config(
+       __in            efx_nic_t *enp,
+       __out           uint32_t *end_paddingp)
+{
+       efx_mcdi_req_t req;
+       uint8_t payload[MAX(MC_CMD_GET_RXDP_CONFIG_IN_LEN,
+                           MC_CMD_GET_RXDP_CONFIG_OUT_LEN)];
+       uint32_t end_padding;
+       efx_rc_t rc;
+
+       memset(payload, 0, sizeof (payload));
+       req.emr_cmd = MC_CMD_GET_RXDP_CONFIG;
+       req.emr_in_buf = payload;
+       req.emr_in_length = MC_CMD_GET_RXDP_CONFIG_IN_LEN;
+       req.emr_out_buf = payload;
+       req.emr_out_length = MC_CMD_GET_RXDP_CONFIG_OUT_LEN;
+
+       efx_mcdi_execute(enp, &req);
+       if (req.emr_rc != 0) {
+               rc = req.emr_rc;
+               goto fail1;
+       }
+
+       if (MCDI_OUT_DWORD_FIELD(req, GET_RXDP_CONFIG_OUT_DATA,
+                                   GET_RXDP_CONFIG_OUT_PAD_HOST_DMA) == 0) {
+               /* RX DMA end padding is disabled */
+               end_padding = 0;
+       } else {
+               switch (MCDI_OUT_DWORD_FIELD(req, GET_RXDP_CONFIG_OUT_DATA,
+                                           GET_RXDP_CONFIG_OUT_PAD_HOST_LEN)) {
+               case MC_CMD_SET_RXDP_CONFIG_IN_PAD_HOST_64:
+                       end_padding = 64;
+                       break;
+               case MC_CMD_SET_RXDP_CONFIG_IN_PAD_HOST_128:
+                       end_padding = 128;
+                       break;
+               case MC_CMD_SET_RXDP_CONFIG_IN_PAD_HOST_256:
+                       end_padding = 256;
+                       break;
+               default:
+                       rc = ENOTSUP;
+                       goto fail2;
+               }
+       }
+
+       *end_paddingp = end_padding;
+
+       return (0);
+
+fail2:
+       EFSYS_PROBE(fail2);
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
        return (rc);
 }