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
  22 #include "ralink_soc_eth.h"
  23 #include "mdio_rt2880.h"
  24
  25 #define RT305X_RESET_FE         BIT(21)
  26 #define RT305X_RESET_ESW        BIT(23)
  27 #define SYSC_REG_RESET_CTRL     0x034
  28
  29 static const u32 rt5350_reg_table[FE_REG_COUNT] = {
  30         [FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
  31         [FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
  32         [FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
  33         [FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
  34         [FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
  35         [FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
  36         [FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
  37         [FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
  38         [FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
  39         [FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
  40         [FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
  41         [FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
  42         [FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
  43         [FE_REG_FE_RST_GL] = 0,
  44         [FE_REG_FE_DMA_VID_BASE] = 0,
  45 };
  46
  47 static void rt305x_init_data(struct fe_soc_data *data,
  48                 struct net_device *netdev)
  49 {
  50         struct fe_priv *priv = netdev_priv(netdev);
  51
  52         priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG;
  53         netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
  54                 NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
  55 }
  56
  57 static int rt3050_fwd_config(struct fe_priv *priv)
  58 {
  59         int ret;
  60
  61         if (ralink_soc != RT305X_SOC_RT3052) {
  62                 ret = fe_set_clock_cycle(priv);
  63                 if (ret)
  64                         return ret;
  65         }
  66
  67         fe_fwd_config(priv);
  68         if (ralink_soc != RT305X_SOC_RT3352)
  69                 fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
  70         fe_csum_config(priv);
  71
  72         return 0;
  73 }
  74
  75 static void rt305x_fe_reset(void)
  76 {
  77         rt_sysc_w32(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
  78         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
  79 }
  80
  81 static void rt5350_init_data(struct fe_soc_data *data,
  82                 struct net_device *netdev)
  83 {
  84         netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
  85 }
  86
  87 static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
  88 {
  89         unsigned long flags;
  90
  91         spin_lock_irqsave(&priv->page_lock, flags);
  92         fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
  93         fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
  94                 RT5350_SDM_MAC_ADRL);
  95         spin_unlock_irqrestore(&priv->page_lock, flags);
  96 }
  97
  98 static void rt5350_rxcsum_config(bool enable)
  99 {
 100         if (enable)
 101                 fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
 102                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 103                                 RT5350_SDM_CFG);
 104         else
 105                 fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
 106                                 RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
 107                                 RT5350_SDM_CFG);
 108 }
 109
 110 static int rt5350_fwd_config(struct fe_priv *priv)
 111 {
 112         struct net_device *dev = priv_netdev(priv);
 113
 114         rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
 115
 116         return 0;
 117 }
 118
 119 static void rt5350_tx_dma(struct fe_tx_dma *txd)
 120 {
 121         txd->txd4 = 0;
 122 }
 123
 124 static void rt5350_fe_reset(void)
 125 {
 126         rt_sysc_w32(RT305X_RESET_FE | RT305X_RESET_ESW, SYSC_REG_RESET_CTRL);
 127         rt_sysc_w32(0, SYSC_REG_RESET_CTRL);
 128 }
 129
 130 static struct fe_soc_data rt3050_data = {
 131         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 132         .init_data = rt305x_init_data,
 133         .reset_fe = rt305x_fe_reset,
 134         .fwd_config = rt3050_fwd_config,
 135         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 136         .checksum_bit = RX_DMA_L4VALID,
 137         .tx_udf_bit = TX_DMA_UDF,
 138         .rx_int = FE_RX_DONE_INT,
 139         .tx_int = FE_TX_DONE_INT,
 140 };
 141
 142 static struct fe_soc_data rt5350_data = {
 143         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 144         .init_data = rt5350_init_data,
 145         .reg_table = rt5350_reg_table,
 146         .reset_fe = rt5350_fe_reset,
 147         .set_mac = rt5350_set_mac,
 148         .fwd_config = rt5350_fwd_config,
 149         .tx_dma = rt5350_tx_dma,
 150         .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
 151         .checksum_bit = RX_DMA_L4VALID,
 152         .tx_udf_bit = TX_DMA_UDF,
 153         .rx_int = RT5350_RX_DONE_INT,
 154         .tx_int = RT5350_TX_DONE_INT,
 155 };
 156
 157 const struct of_device_id of_fe_match[] = {
 158         { .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
 159         { .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
 160         {},
 161 };
 162
 163 MODULE_DEVICE_TABLE(of, of_fe_match);