Revert "sfc: Use write-combining to reduce TX latency" and follow-ups

[pandora-kernel.git] / drivers / net / sfc / siena.c

diff --git a/drivers/net/sfc/siena.c b/drivers/net/sfc/siena.c
index 5735e84..2c3bd93 100644 (file)
--- a/drivers/net/sfc/siena.c
+++ b/drivers/net/sfc/siena.c
@@ -250,26 +250,12 @@ static int siena_probe_nic(struct efx_nic *efx)
        efx_reado(efx, &reg, FR_AZ_CS_DEBUG);
        efx->net_dev->dev_id = EFX_OWORD_FIELD(reg, FRF_CZ_CS_PORT_NUM) - 1;
 
-       /* Initialise MCDI */
-       nic_data->mcdi_smem = ioremap_nocache(efx->membase_phys +
-                                             FR_CZ_MC_TREG_SMEM,
-                                             FR_CZ_MC_TREG_SMEM_STEP *
-                                             FR_CZ_MC_TREG_SMEM_ROWS);
-       if (!nic_data->mcdi_smem) {
-               netif_err(efx, probe, efx->net_dev,
-                         "could not map MCDI at %llx+%x\n",
-                         (unsigned long long)efx->membase_phys +
-                         FR_CZ_MC_TREG_SMEM,
-                         FR_CZ_MC_TREG_SMEM_STEP * FR_CZ_MC_TREG_SMEM_ROWS);
-               rc = -ENOMEM;
-               goto fail1;
-       }
        efx_mcdi_init(efx);
 
        /* Recover from a failed assertion before probing */
        rc = efx_mcdi_handle_assertion(efx);
        if (rc)
-               goto fail2;
+               goto fail1;
 
        /* Let the BMC know that the driver is now in charge of link and
         * filter settings. We must do this before we reset the NIC */
@@ -324,7 +310,6 @@ fail4:
 fail3:
        efx_mcdi_drv_attach(efx, false, NULL);
 fail2:
-       iounmap(nic_data->mcdi_smem);
 fail1:
        kfree(efx->nic_data);
        return rc;
@@ -404,8 +389,6 @@ static int siena_init_nic(struct efx_nic *efx)
 
 static void siena_remove_nic(struct efx_nic *efx)
 {
-       struct siena_nic_data *nic_data = efx->nic_data;
-
        efx_nic_free_buffer(efx, &efx->irq_status);
 
        siena_reset_hw(efx, RESET_TYPE_ALL);
@@ -415,8 +398,7 @@ static void siena_remove_nic(struct efx_nic *efx)
                efx_mcdi_drv_attach(efx, false, NULL);
 
        /* Tear down the private nic state */
-       iounmap(nic_data->mcdi_smem);
-       kfree(nic_data);
+       kfree(efx->nic_data);
        efx->nic_data = NULL;
 }
 
@@ -656,7 +638,8 @@ const struct efx_nic_type siena_a0_nic_type = {
        .default_mac_ops = &efx_mcdi_mac_operations,
 
        .revision = EFX_REV_SIENA_A0,
-       .mem_map_size = FR_CZ_MC_TREG_SMEM, /* MC_TREG_SMEM mapped separately */
+       .mem_map_size = (FR_CZ_MC_TREG_SMEM +
+                        FR_CZ_MC_TREG_SMEM_STEP * FR_CZ_MC_TREG_SMEM_ROWS),
        .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,
        .rxd_ptr_tbl_base = FR_BZ_RX_DESC_PTR_TBL,
        .buf_tbl_base = FR_BZ_BUF_FULL_TBL,