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_DMA_VID_BASE] = 0,
  55 };
  56
  57 static void rt305x_init_data(struct fe_soc_data *data,
  58                 struct net_device *netdev)
  59 {
  60         struct fe_priv *priv = netdev_priv(netdev);
  61
  62         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG;
  63         netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
  64                 NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
  65 }
  66
  67 static int rt3050_fwd_config(struct fe_priv *priv)
  68 {
  69         int ret;
  70
  71         if (soc_is_rt3052()) {
  72                 ret = fe_set_clock_cycle(priv);
  73                 if (ret)
  74                         return ret;
  75         }
  76
  77         fe_fwd_config(priv);
  78         if (!soc_is_rt3352())
  79                 fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  80         fe_csum_config(priv);
  81
  82         return 0;
  83 }
  84
  85 static void rt305x_fe_reset(void)
  86 {
  87         rt_sysc_w32(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
  88         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
  89 }
  90
  91 static void rt5350_init_data(struct fe_soc_data *data,
  92                 struct net_device *netdev)
  93 {
  94         netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
  95 }
  96
  97 static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
  98 {
  99         unsigned long flags;
 100
 101         spin_lock_irqsave(&priv->page_lock, flags);
 102         fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
 103         fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
 104                 RT5350_SDM_MAC_ADRL);
 105         spin_unlock_irqrestore(&priv->page_lock, flags);
 106 }
 107
 108 static void rt5350_rxcsum_config(bool enable)
 109 {
 110         if (enable)
 111                 fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
 112                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 113                                 RT5350_SDM_CFG);
 114         else
 115                 fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
 116                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 117                                 RT5350_SDM_CFG);
 118 }
 119
 120 static int rt5350_fwd_config(struct fe_priv *priv)
 121 {
 122         struct net_device *dev = priv_netdev(priv);
 123
 124         rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
 125
 126         return 0;
 127 }
 128
 129 static void rt5350_tx_dma(struct fe_priv *priv, int idx, struct sk_buff *skb)
 130 {
 131         priv->tx_dma[idx].txd4 = 0;
 132 }
 133
 134 static void rt5350_fe_reset(void)
 135 {
 136         rt_sysc_w32(RT305X_RESET_FE | RT305X_RESET_ESW, SYSC_REG_RESET_CTRL);
 137         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
 138 }
 139
 140 static struct fe_soc_data rt3050_data = {
 141         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 142         .init_data = rt305x_init_data,
 143         .reset_fe = rt305x_fe_reset,
 144         .fwd_config = rt3050_fwd_config,
 145         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 146         .checksum_bit = RX_DMA_L4VALID,
 147         .tx_udf_bit = TX_DMA_UDF,
 148         .rx_dly_int = FE_RX_DLY_INT,
 149         .tx_dly_int = FE_TX_DLY_INT,
 150 };
 151
 152 static struct fe_soc_data rt5350_data = {
 153         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 154         .init_data = rt5350_init_data,
 155         .reg_table = rt5350_reg_table,
 156         .reset_fe = rt5350_fe_reset,
 157         .set_mac = rt5350_set_mac,
 158         .fwd_config = rt5350_fwd_config,
 159         .tx_dma = rt5350_tx_dma,
 160         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 161         .checksum_bit = RX_DMA_L4VALID,
 162         .tx_udf_bit = TX_DMA_UDF,
 163         .rx_dly_int = RT5350_RX_DLY_INT,
 164         .tx_dly_int = RT5350_TX_DLY_INT,
 165 };
 166
 167 const struct of_device_id of_fe_match[] = {
 168         { .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
 169         { .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
 170         {},
 171 };
 172
 173 MODULE_DEVICE_TABLE(of, of_fe_match);