target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/soc_rt2880.c

   1 /*   This program is free software; you can redistribute it and/or modify
   2  *   it under the terms of the GNU General Public License as published by
   3  *   the Free Software Foundation; version 2 of the License
   4  *
   5  *   This program is distributed in the hope that it will be useful,
   6  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   7  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   8  *   GNU General Public License for more details.
   9  *
  10  *   Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
  11  *   Copyright (C) 2009-2015 Felix Fietkau <nbd@nbd.name>
  12  *   Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
  13  */
  14
  15 #include <linux/module.h>
  16
  17 #include <asm/mach-ralink/ralink_regs.h>
  18
  19 #include "mtk_eth_soc.h"
  20 #include "mdio_rt2880.h"
  21
  22 #define RT2880_RESET_FE                 BIT(18)
  23
  24 static void rt2880_init_data(struct fe_soc_data *data,
  25                              struct net_device *netdev)
  26 {
  27         struct fe_priv *priv = netdev_priv(netdev);
  28
  29         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
  30                 FE_FLAG_JUMBO_FRAME | FE_FLAG_CALIBRATE_CLK;
  31         netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_TX;
  32         /* this should work according to the datasheet but actually does not*/
  33         /* netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; */
  34 }
  35
  36 void rt2880_fe_reset(void)
  37 {
  38         fe_reset(RT2880_RESET_FE);
  39 }
  40
  41 static int rt2880_fwd_config(struct fe_priv *priv)
  42 {
  43         int ret;
  44
  45         ret = fe_set_clock_cycle(priv);
  46         if (ret)
  47                 return ret;
  48
  49         fe_fwd_config(priv);
  50         fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  51         fe_csum_config(priv);
  52
  53         return ret;
  54 }
  55
  56 struct fe_soc_data rt2880_data = {
  57         .init_data = rt2880_init_data,
  58         .reset_fe = rt2880_fe_reset,
  59         .fwd_config = rt2880_fwd_config,
  60         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
  61         .checksum_bit = RX_DMA_L4VALID,
  62         .rx_int = FE_RX_DONE_INT,
  63         .tx_int = FE_TX_DONE_INT,
  64         .status_int = FE_CNT_GDM_AF,
  65         .mdio_read = rt2880_mdio_read,
  66         .mdio_write = rt2880_mdio_write,
  67         .mdio_adjust_link = rt2880_mdio_link_adjust,
  68         .port_init = rt2880_port_init,
  69 };
  70
  71 const struct of_device_id of_fe_match[] = {
  72         { .compatible = "ralink,rt2880-eth", .data = &rt2880_data },
  73         {},
  74 };
  75
  76 MODULE_DEVICE_TABLE(of, of_fe_match);