target/linux/ramips/files/drivers/net/ethernet/ralink/soc_rt305x.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; version 2 of the License
   5  *
   6  *   This program is distributed in the hope that it will be useful,
   7  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *   GNU General Public License for more details.
  10  *
  11  *   You should have received a copy of the GNU General Public License
  12  *   along with this program; if not, write to the Free Software
  13  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  14  *
  15  *   Copyright (C) 2009-2013 John Crispin <blogic@openwrt.org>
  16  */
  17
  18 #include <linux/module.h>
  19
  20 #include <asm/mach-ralink/ralink_regs.h>
  21 #ifdef CONFIG_SOC_MT7620
  22 static inline int soc_is_rt3352(void)
  23 {
  24         return 0;
  25 }
  26
  27 static inline int soc_is_rt3052(void)
  28 {
  29         return 0;
  30 }
  31 #else
  32 #include <asm/mach-ralink/rt305x.h>
  33 #endif
  34
  35 #include "ralink_soc_eth.h"
  36 #include "mdio_rt2880.h"
  37
  38 #define RT305X_RESET_FE         BIT(21)
  39 #define RT305X_RESET_ESW        BIT(23)
  40 #define SYSC_REG_RESET_CTRL     0x034
  41
  42 static const u32 rt5350_reg_table[FE_REG_COUNT] = {
  43         [FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
  44         [FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
  45         [FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
  46         [FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
  47         [FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
  48         [FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
  49         [FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
  50         [FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
  51         [FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
  52         [FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
  53         [FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
  54         [FE_REG_FE_RST_GL] = 0,
  55         [FE_REG_FE_DMA_VID_BASE] = 0,
  56 };
  57
  58 static void rt305x_init_data(struct fe_soc_data *data,
  59                 struct net_device *netdev)
  60 {
  61         struct fe_priv *priv = netdev_priv(netdev);
  62
  63         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG;
  64         netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
  65                 NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
  66 }
  67
  68 static int rt3050_fwd_config(struct fe_priv *priv)
  69 {
  70         int ret;
  71
  72         if (soc_is_rt3052()) {
  73                 ret = fe_set_clock_cycle(priv);
  74                 if (ret)
  75                         return ret;
  76         }
  77
  78         fe_fwd_config(priv);
  79         if (!soc_is_rt3352())
  80                 fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  81         fe_csum_config(priv);
  82
  83         return 0;
  84 }
  85
  86 static void rt305x_fe_reset(void)
  87 {
  88         rt_sysc_w32(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
  89         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
  90 }
  91
  92 static void rt5350_init_data(struct fe_soc_data *data,
  93                 struct net_device *netdev)
  94 {
  95         netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
  96 }
  97
  98 static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
  99 {
 100         unsigned long flags;
 101
 102         spin_lock_irqsave(&priv->page_lock, flags);
 103         fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
 104         fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
 105                 RT5350_SDM_MAC_ADRL);
 106         spin_unlock_irqrestore(&priv->page_lock, flags);
 107 }
 108
 109 static void rt5350_rxcsum_config(bool enable)
 110 {
 111         if (enable)
 112                 fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
 113                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 114                                 RT5350_SDM_CFG);
 115         else
 116                 fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
 117                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 118                                 RT5350_SDM_CFG);
 119 }
 120
 121 static int rt5350_fwd_config(struct fe_priv *priv)
 122 {
 123         struct net_device *dev = priv_netdev(priv);
 124
 125         rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
 126
 127         return 0;
 128 }
 129
 130 static void rt5350_tx_dma(struct fe_priv *priv, int idx, struct sk_buff *skb)
 131 {
 132         priv->tx_dma[idx].txd4 = 0;
 133 }
 134
 135 static void rt5350_fe_reset(void)
 136 {
 137         rt_sysc_w32(RT305X_RESET_FE | RT305X_RESET_ESW, SYSC_REG_RESET_CTRL);
 138         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
 139 }
 140
 141 static struct fe_soc_data rt3050_data = {
 142         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 143         .init_data = rt305x_init_data,
 144         .reset_fe = rt305x_fe_reset,
 145         .fwd_config = rt3050_fwd_config,
 146         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 147         .checksum_bit = RX_DMA_L4VALID,
 148         .tx_udf_bit = TX_DMA_UDF,
 149         .rx_dly_int = FE_RX_DLY_INT,
 150         .tx_dly_int = FE_TX_DLY_INT,
 151 };
 152
 153 static struct fe_soc_data rt5350_data = {
 154         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 155         .init_data = rt5350_init_data,
 156         .reg_table = rt5350_reg_table,
 157         .reset_fe = rt5350_fe_reset,
 158         .set_mac = rt5350_set_mac,
 159         .fwd_config = rt5350_fwd_config,
 160         .tx_dma = rt5350_tx_dma,
 161         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 162         .checksum_bit = RX_DMA_L4VALID,
 163         .tx_udf_bit = TX_DMA_UDF,
 164         .rx_dly_int = RT5350_RX_DLY_INT,
 165         .tx_dly_int = RT5350_TX_DLY_INT,
 166 };
 167
 168 const struct of_device_id of_fe_match[] = {
 169         { .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
 170         { .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
 171         {},
 172 };
 173
 174 MODULE_DEVICE_TABLE(of, of_fe_match);