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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2009-2013 John Crispin <blogic@openwrt.org>
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/if_vlan.h>
#include <asm/mach-ralink/ralink_regs.h>
#include <mt7620.h>
#include "ralink_soc_eth.h"
#include "gsw_mt7620a.h"
#define MT7620A_CDMA_CSG_CFG 0x400
#define MT7620_DMA_VID (MT7620A_CDMA_CSG_CFG | 0x30)
#define MT7621_DMA_VID 0xa8
#define MT7620A_DMA_2B_OFFSET BIT(31)
#define MT7620A_RESET_FE BIT(21)
#define MT7621_RESET_FE BIT(6)
#define MT7620A_RESET_ESW BIT(23)
#define MT7620_L4_VALID BIT(23)
#define MT7621_L4_VALID BIT(24)
#define MT7620_TX_DMA_UDF BIT(15)
#define MT7621_TX_DMA_UDF BIT(19)
#define TX_DMA_FP_BMAP ((0xff) << 19)
#define SYSC_REG_RESET_CTRL 0x34
#define CDMA_ICS_EN BIT(2)
#define CDMA_UCS_EN BIT(1)
#define CDMA_TCS_EN BIT(0)
#define GDMA_ICS_EN BIT(22)
#define GDMA_TCS_EN BIT(21)
#define GDMA_UCS_EN BIT(20)
/* frame engine counters */
#define MT7620_REG_MIB_OFFSET 0x1000
#define MT7620_PPE_AC_BCNT0 (MT7620_REG_MIB_OFFSET + 0x00)
#define MT7620_GDM1_TX_GBCNT (MT7620_REG_MIB_OFFSET + 0x300)
#define MT7620_GDM2_TX_GBCNT (MT7620_GDM1_TX_GBCNT + 0x40)
#define MT7621_REG_MIB_OFFSET 0x2000
#define MT7621_PPE_AC_BCNT0 (MT7621_REG_MIB_OFFSET + 0x00)
#define MT7621_GDM1_TX_GBCNT (MT7621_REG_MIB_OFFSET + 0x400)
#define MT7621_GDM2_TX_GBCNT (MT7621_GDM1_TX_GBCNT + 0x40)
#define GSW_REG_GDMA1_MAC_ADRL 0x508
#define GSW_REG_GDMA1_MAC_ADRH 0x50C
#define MT7621_FE_RST_GL (FE_FE_OFFSET + 0x04)
static const u32 mt7620_reg_table[FE_REG_COUNT] = {
[FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
[FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
[FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
[FE_REG_FE_DMA_VID_BASE] = MT7620_DMA_VID,
[FE_REG_FE_COUNTER_BASE] = MT7620_GDM1_TX_GBCNT,
[FE_REG_FE_RST_GL] = MT7621_FE_RST_GL,
};
static const u32 mt7621_reg_table[FE_REG_COUNT] = {
[FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
[FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
[FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
[FE_REG_FE_DMA_VID_BASE] = MT7621_DMA_VID,
[FE_REG_FE_COUNTER_BASE] = MT7621_GDM1_TX_GBCNT,
[FE_REG_FE_RST_GL] = MT7621_FE_RST_GL,
};
static void mt7620_fe_reset(void)
{
u32 val = rt_sysc_r32(SYSC_REG_RESET_CTRL);
rt_sysc_w32(val | MT7620A_RESET_FE | MT7620A_RESET_ESW, SYSC_REG_RESET_CTRL);
rt_sysc_w32(val, SYSC_REG_RESET_CTRL);
}
static void mt7621_fe_reset(void)
{
u32 val = rt_sysc_r32(SYSC_REG_RESET_CTRL);
rt_sysc_w32(val | MT7621_RESET_FE, SYSC_REG_RESET_CTRL);
rt_sysc_w32(val, SYSC_REG_RESET_CTRL);
}
static void mt7620_rxcsum_config(bool enable)
{
if (enable)
fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) | (GDMA_ICS_EN |
GDMA_TCS_EN | GDMA_UCS_EN),
MT7620A_GDMA1_FWD_CFG);
else
fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~(GDMA_ICS_EN |
GDMA_TCS_EN | GDMA_UCS_EN),
MT7620A_GDMA1_FWD_CFG);
}
static void mt7620_txcsum_config(bool enable)
{
if (enable)
fe_w32(fe_r32(MT7620A_CDMA_CSG_CFG) | (CDMA_ICS_EN |
CDMA_UCS_EN | CDMA_TCS_EN),
MT7620A_CDMA_CSG_CFG);
else
fe_w32(fe_r32(MT7620A_CDMA_CSG_CFG) & ~(CDMA_ICS_EN |
CDMA_UCS_EN | CDMA_TCS_EN),
MT7620A_CDMA_CSG_CFG);
}
static int mt7620_fwd_config(struct fe_priv *priv)
{
struct net_device *dev = priv_netdev(priv);
fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~7, MT7620A_GDMA1_FWD_CFG);
mt7620_txcsum_config((dev->features & NETIF_F_IP_CSUM));
mt7620_rxcsum_config((dev->features & NETIF_F_RXCSUM));
return 0;
}
static int mt7621_fwd_config(struct fe_priv *priv)
{
struct net_device *dev = priv_netdev(priv);
fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~0xffff, MT7620A_GDMA1_FWD_CFG);
mt7620_txcsum_config((dev->features & NETIF_F_IP_CSUM));
mt7620_rxcsum_config((dev->features & NETIF_F_RXCSUM));
return 0;
}
static void mt7620_tx_dma(struct fe_priv *priv, int idx, struct sk_buff *skb)
{
priv->tx_dma[idx].txd4 = 0;
}
static void mt7621_tx_dma(struct fe_priv *priv, int idx, struct sk_buff *skb)
{
priv->tx_dma[idx].txd4 = BIT(25);
}
static void mt7620_rx_dma(struct fe_priv *priv, int idx, int len)
{
priv->rx_dma[idx].rxd2 = RX_DMA_PLEN0(len);
}
static void mt7620_init_data(struct fe_soc_data *data,
struct net_device *netdev)
{
struct fe_priv *priv = netdev_priv(netdev);
priv->flags = FE_FLAG_PADDING_64B;
netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX;
if (mt7620_get_eco() >= 5 || IS_ENABLED(CONFIG_SOC_MT7621))
netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_IPV6_CSUM;
}
static void mt7621_set_mac(struct fe_priv *priv, unsigned char *mac)
{
unsigned long flags;
spin_lock_irqsave(&priv->page_lock, flags);
fe_w32((mac[0] << 8) | mac[1], GSW_REG_GDMA1_MAC_ADRH);
fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
GSW_REG_GDMA1_MAC_ADRL);
spin_unlock_irqrestore(&priv->page_lock, flags);
}
static struct fe_soc_data mt7620_data = {
.mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
.init_data = mt7620_init_data,
.reset_fe = mt7620_fe_reset,
.set_mac = mt7620_set_mac,
.fwd_config = mt7620_fwd_config,
.tx_dma = mt7620_tx_dma,
.rx_dma = mt7620_rx_dma,
.switch_init = mt7620_gsw_probe,
.switch_config = mt7620_gsw_config,
.port_init = mt7620_port_init,
.reg_table = mt7620_reg_table,
.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS | MT7620A_DMA_2B_OFFSET,
.rx_dly_int = RT5350_RX_DLY_INT,
.tx_dly_int = RT5350_TX_DLY_INT,
.checksum_bit = MT7620_L4_VALID,
.tx_udf_bit = MT7620_TX_DMA_UDF,
.has_carrier = mt7620a_has_carrier,
.mdio_read = mt7620_mdio_read,
.mdio_write = mt7620_mdio_write,
.mdio_adjust_link = mt7620_mdio_link_adjust,
};
static struct fe_soc_data mt7621_data = {
.mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
.init_data = mt7620_init_data,
.reset_fe = mt7621_fe_reset,
.set_mac = mt7621_set_mac,
.fwd_config = mt7621_fwd_config,
.tx_dma = mt7621_tx_dma,
.rx_dma = mt7620_rx_dma,
.switch_init = mt7620_gsw_probe,
.switch_config = mt7621_gsw_config,
.reg_table = mt7621_reg_table,
.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS | MT7620A_DMA_2B_OFFSET,
.rx_dly_int = RT5350_RX_DLY_INT,
.tx_dly_int = RT5350_TX_DLY_INT,
.checksum_bit = MT7621_L4_VALID,
.tx_udf_bit = MT7621_TX_DMA_UDF,
.has_carrier = mt7620a_has_carrier,
.mdio_read = mt7620_mdio_read,
.mdio_write = mt7620_mdio_write,
.mdio_adjust_link = mt7620_mdio_link_adjust,
};
const struct of_device_id of_fe_match[] = {
{ .compatible = "ralink,mt7620a-eth", .data = &mt7620_data },
{ .compatible = "ralink,mt7621-eth", .data = &mt7621_data },
{},
};
MODULE_DEVICE_TABLE(of, of_fe_match);
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