target/linux/ramips/files/drivers/net/ethernet/ralink/soc_rt3050.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 static const u16 rt5350_reg_table[FE_REG_COUNT] = {
  23         [FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
  24         [FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
  25         [FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
  26         [FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
  27         [FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
  28         [FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
  29         [FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
  30         [FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
  31         [FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
  32         [FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
  33         [FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
  34         [FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
  35         [FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
  36         [FE_REG_FE_RST_GL] = 0,
  37         [FE_REG_FE_DMA_VID_BASE] = 0,
  38 };
  39
  40 static void rt305x_init_data(struct fe_soc_data *data,
  41                              struct net_device *netdev)
  42 {
  43         struct fe_priv *priv = netdev_priv(netdev);
  44
  45         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
  46                 FE_FLAG_CALIBRATE_CLK | FE_FLAG_HAS_SWITCH;
  47         netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
  48                 NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
  49 }
  50
  51 static int rt3050_fwd_config(struct fe_priv *priv)
  52 {
  53         int ret;
  54
  55         if (ralink_soc != RT305X_SOC_RT3052) {
  56                 ret = fe_set_clock_cycle(priv);
  57                 if (ret)
  58                         return ret;
  59         }
  60
  61         fe_fwd_config(priv);
  62         if (ralink_soc != RT305X_SOC_RT3352)
  63                 fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  64         fe_csum_config(priv);
  65
  66         return 0;
  67 }
  68
  69 static void rt5350_init_data(struct fe_soc_data *data,
  70                              struct net_device *netdev)
  71 {
  72         struct fe_priv *priv = netdev_priv(netdev);
  73
  74         priv->flags = FE_FLAG_HAS_SWITCH;
  75         netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
  76 }
  77
  78 static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
  79 {
  80         unsigned long flags;
  81
  82         spin_lock_irqsave(&priv->page_lock, flags);
  83         fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
  84         fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
  85                RT5350_SDM_MAC_ADRL);
  86         spin_unlock_irqrestore(&priv->page_lock, flags);
  87 }
  88
  89 static void rt5350_rxcsum_config(bool enable)
  90 {
  91         if (enable)
  92                 fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
  93                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
  94                                 RT5350_SDM_CFG);
  95         else
  96                 fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
  97                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
  98                                 RT5350_SDM_CFG);
  99 }
 100
 101 static int rt5350_fwd_config(struct fe_priv *priv)
 102 {
 103         struct net_device *dev = priv_netdev(priv);
 104
 105         rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
 106
 107         return 0;
 108 }
 109
 110 static void rt5350_tx_dma(struct fe_tx_dma *txd)
 111 {
 112         txd->txd4 = 0;
 113 }
 114
 115 static struct fe_soc_data rt3050_data = {
 116         .init_data = rt305x_init_data,
 117         .fwd_config = rt3050_fwd_config,
 118         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 119         .checksum_bit = RX_DMA_L4VALID,
 120         .rx_int = FE_RX_DONE_INT,
 121         .tx_int = FE_TX_DONE_INT,
 122         .status_int = FE_CNT_GDM_AF,
 123 };
 124
 125 static struct fe_soc_data rt5350_data = {
 126         .init_data = rt5350_init_data,
 127         .reg_table = rt5350_reg_table,
 128         .set_mac = rt5350_set_mac,
 129         .fwd_config = rt5350_fwd_config,
 130         .tx_dma = rt5350_tx_dma,
 131         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 132         .checksum_bit = RX_DMA_L4VALID,
 133         .rx_int = RT5350_RX_DONE_INT,
 134         .tx_int = RT5350_TX_DONE_INT,
 135 };
 136
 137 const struct of_device_id of_fe_match[] = {
 138         { .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
 139         { .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
 140         {},
 141 };
 142
 143 MODULE_DEVICE_TABLE(of, of_fe_match);