target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/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 #define RT305X_RESET_FE         BIT(21)
  23 #define RT305X_RESET_ESW        BIT(23)
  24
  25 static const u16 rt5350_reg_table[FE_REG_COUNT] = {
  26         [FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
  27         [FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
  28         [FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
  29         [FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
  30         [FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
  31         [FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
  32         [FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
  33         [FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
  34         [FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
  35         [FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
  36         [FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
  37         [FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
  38         [FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
  39         [FE_REG_FE_RST_GL] = 0,
  40         [FE_REG_FE_DMA_VID_BASE] = 0,
  41 };
  42
  43 static void rt305x_init_data(struct fe_soc_data *data,
  44                              struct net_device *netdev)
  45 {
  46         struct fe_priv *priv = netdev_priv(netdev);
  47
  48         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
  49                 FE_FLAG_CALIBRATE_CLK | FE_FLAG_HAS_SWITCH;
  50         netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
  51                 NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
  52 }
  53
  54 static int rt3050_fwd_config(struct fe_priv *priv)
  55 {
  56         int ret;
  57
  58         if (ralink_soc != RT305X_SOC_RT3052) {
  59                 ret = fe_set_clock_cycle(priv);
  60                 if (ret)
  61                         return ret;
  62         }
  63
  64         fe_fwd_config(priv);
  65         if (ralink_soc != RT305X_SOC_RT3352)
  66                 fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  67         fe_csum_config(priv);
  68
  69         return 0;
  70 }
  71
  72 static void rt305x_fe_reset(void)
  73 {
  74         fe_reset(RT305X_RESET_FE);
  75 }
  76
  77 static void rt5350_init_data(struct fe_soc_data *data,
  78                              struct net_device *netdev)
  79 {
  80         struct fe_priv *priv = netdev_priv(netdev);
  81
  82         priv->flags = FE_FLAG_HAS_SWITCH;
  83         netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
  84 }
  85
  86 static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
  87 {
  88         unsigned long flags;
  89
  90         spin_lock_irqsave(&priv->page_lock, flags);
  91         fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
  92         fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
  93                RT5350_SDM_MAC_ADRL);
  94         spin_unlock_irqrestore(&priv->page_lock, flags);
  95 }
  96
  97 static void rt5350_rxcsum_config(bool enable)
  98 {
  99         if (enable)
 100                 fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
 101                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 102                                 RT5350_SDM_CFG);
 103         else
 104                 fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
 105                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 106                                 RT5350_SDM_CFG);
 107 }
 108
 109 static int rt5350_fwd_config(struct fe_priv *priv)
 110 {
 111         struct net_device *dev = priv_netdev(priv);
 112
 113         rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
 114
 115         return 0;
 116 }
 117
 118 static void rt5350_tx_dma(struct fe_tx_dma *txd)
 119 {
 120         txd->txd4 = 0;
 121 }
 122
 123 static void rt5350_fe_reset(void)
 124 {
 125         fe_reset(RT305X_RESET_FE | RT305X_RESET_ESW);
 126 }
 127
 128 static struct fe_soc_data rt3050_data = {
 129         .init_data = rt305x_init_data,
 130         .reset_fe = rt305x_fe_reset,
 131         .fwd_config = rt3050_fwd_config,
 132         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 133         .checksum_bit = RX_DMA_L4VALID,
 134         .rx_int = FE_RX_DONE_INT,
 135         .tx_int = FE_TX_DONE_INT,
 136         .status_int = FE_CNT_GDM_AF,
 137 };
 138
 139 static struct fe_soc_data rt5350_data = {
 140         .init_data = rt5350_init_data,
 141         .reg_table = rt5350_reg_table,
 142         .reset_fe = rt5350_fe_reset,
 143         .set_mac = rt5350_set_mac,
 144         .fwd_config = rt5350_fwd_config,
 145         .tx_dma = rt5350_tx_dma,
 146         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 147         .checksum_bit = RX_DMA_L4VALID,
 148         .rx_int = RT5350_RX_DONE_INT,
 149         .tx_int = RT5350_TX_DONE_INT,
 150 };
 151
 152 const struct of_device_id of_fe_match[] = {
 153         { .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
 154         { .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
 155         {},
 156 };
 157
 158 MODULE_DEVICE_TABLE(of, of_fe_match);