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u-boot/drivers/net/mtk_eth.c
Weijie Gao c73d38719f net: mediatek: connect switch to PSE only when starting eth is requested 
So far the switch is initialized in probe stage and is connected to PSE
unconditionally. This will cause all packets being flooded to PSE and may
cause PSE hang before entering linux.

This patch changes the connection between switch and PSE:
- Still initialize switch in probe stage, but disconnect it with PSE
- Connect switch with PSE on eth start
- Disconnect on eth stop

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
2023-08-03 09:40:50 -04:00

1644 lines
41 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 MediaTek Inc.
*
* Author: Weijie Gao <weijie.gao@mediatek.com>
* Author: Mark Lee <mark-mc.lee@mediatek.com>
*/
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <log.h>
#include <malloc.h>
#include <miiphy.h>
#include <net.h>
#include <regmap.h>
#include <reset.h>
#include <syscon.h>
#include <wait_bit.h>
#include <asm/cache.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <dm/device_compat.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/ioport.h>
#include <linux/mdio.h>
#include <linux/mii.h>
#include "mtk_eth.h"
#define NUM_TX_DESC 24
#define NUM_RX_DESC 24
#define TX_TOTAL_BUF_SIZE (NUM_TX_DESC * PKTSIZE_ALIGN)
#define RX_TOTAL_BUF_SIZE (NUM_RX_DESC * PKTSIZE_ALIGN)
#define TOTAL_PKT_BUF_SIZE (TX_TOTAL_BUF_SIZE + RX_TOTAL_BUF_SIZE)
#define MT753X_NUM_PHYS 5
#define MT753X_NUM_PORTS 7
#define MT753X_DFL_SMI_ADDR 31
#define MT753X_SMI_ADDR_MASK 0x1f
#define MT753X_PHY_ADDR(base, addr) \
(((base) + (addr)) & 0x1f)
#define GDMA_FWD_TO_CPU \
(0x20000000 | \
GDM_ICS_EN | \
GDM_TCS_EN | \
GDM_UCS_EN | \
STRP_CRC | \
(DP_PDMA << MYMAC_DP_S) | \
(DP_PDMA << BC_DP_S) | \
(DP_PDMA << MC_DP_S) | \
(DP_PDMA << UN_DP_S))
#define GDMA_FWD_DISCARD \
(0x20000000 | \
GDM_ICS_EN | \
GDM_TCS_EN | \
GDM_UCS_EN | \
STRP_CRC | \
(DP_DISCARD << MYMAC_DP_S) | \
(DP_DISCARD << BC_DP_S) | \
(DP_DISCARD << MC_DP_S) | \
(DP_DISCARD << UN_DP_S))
enum mtk_switch {
SW_NONE,
SW_MT7530,
SW_MT7531
};
/* struct mtk_soc_data - This is the structure holding all differences
* among various plaforms
* @caps Flags shown the extra capability for the SoC
* @ana_rgc3: The offset for register ANA_RGC3 related to
* sgmiisys syscon
* @pdma_base: Register base of PDMA block
* @txd_size: Tx DMA descriptor size.
* @rxd_size: Rx DMA descriptor size.
*/
struct mtk_soc_data {
u32 caps;
u32 ana_rgc3;
u32 pdma_base;
u32 txd_size;
u32 rxd_size;
};
struct mtk_eth_priv {
char pkt_pool[TOTAL_PKT_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
void *tx_ring_noc;
void *rx_ring_noc;
int rx_dma_owner_idx0;
int tx_cpu_owner_idx0;
void __iomem *fe_base;
void __iomem *gmac_base;
void __iomem *sgmii_base;
struct regmap *ethsys_regmap;
struct mii_dev *mdio_bus;
int (*mii_read)(struct mtk_eth_priv *priv, u8 phy, u8 reg);
int (*mii_write)(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 val);
int (*mmd_read)(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg);
int (*mmd_write)(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg,
u16 val);
const struct mtk_soc_data *soc;
int gmac_id;
int force_mode;
int speed;
int duplex;
bool pn_swap;
struct phy_device *phydev;
int phy_interface;
int phy_addr;
enum mtk_switch sw;
int (*switch_init)(struct mtk_eth_priv *priv);
void (*switch_mac_control)(struct mtk_eth_priv *priv, bool enable);
u32 mt753x_smi_addr;
u32 mt753x_phy_base;
u32 mt753x_pmcr;
struct gpio_desc rst_gpio;
int mcm;
struct reset_ctl rst_fe;
struct reset_ctl rst_mcm;
};
static void mtk_pdma_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
{
writel(val, priv->fe_base + priv->soc->pdma_base + reg);
}
static void mtk_pdma_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
u32 set)
{
clrsetbits_le32(priv->fe_base + priv->soc->pdma_base + reg, clr, set);
}
static void mtk_gdma_write(struct mtk_eth_priv *priv, int no, u32 reg,
u32 val)
{
u32 gdma_base;
if (no == 1)
gdma_base = GDMA2_BASE;
else
gdma_base = GDMA1_BASE;
writel(val, priv->fe_base + gdma_base + reg);
}
static u32 mtk_gmac_read(struct mtk_eth_priv *priv, u32 reg)
{
return readl(priv->gmac_base + reg);
}
static void mtk_gmac_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
{
writel(val, priv->gmac_base + reg);
}
static void mtk_gmac_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr, u32 set)
{
clrsetbits_le32(priv->gmac_base + reg, clr, set);
}
static void mtk_ethsys_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
u32 set)
{
uint val;
regmap_read(priv->ethsys_regmap, reg, &val);
val &= ~clr;
val |= set;
regmap_write(priv->ethsys_regmap, reg, val);
}
/* Direct MDIO clause 22/45 access via SoC */
static int mtk_mii_rw(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data,
u32 cmd, u32 st)
{
int ret;
u32 val;
val = (st << MDIO_ST_S) |
((cmd << MDIO_CMD_S) & MDIO_CMD_M) |
(((u32)phy << MDIO_PHY_ADDR_S) & MDIO_PHY_ADDR_M) |
(((u32)reg << MDIO_REG_ADDR_S) & MDIO_REG_ADDR_M);
if (cmd == MDIO_CMD_WRITE)
val |= data & MDIO_RW_DATA_M;
mtk_gmac_write(priv, GMAC_PIAC_REG, val | PHY_ACS_ST);
ret = wait_for_bit_le32(priv->gmac_base + GMAC_PIAC_REG,
PHY_ACS_ST, 0, 5000, 0);
if (ret) {
pr_warn("MDIO access timeout\n");
return ret;
}
if (cmd == MDIO_CMD_READ) {
val = mtk_gmac_read(priv, GMAC_PIAC_REG);
return val & MDIO_RW_DATA_M;
}
return 0;
}
/* Direct MDIO clause 22 read via SoC */
static int mtk_mii_read(struct mtk_eth_priv *priv, u8 phy, u8 reg)
{
return mtk_mii_rw(priv, phy, reg, 0, MDIO_CMD_READ, MDIO_ST_C22);
}
/* Direct MDIO clause 22 write via SoC */
static int mtk_mii_write(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data)
{
return mtk_mii_rw(priv, phy, reg, data, MDIO_CMD_WRITE, MDIO_ST_C22);
}
/* Direct MDIO clause 45 read via SoC */
static int mtk_mmd_read(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg)
{
int ret;
ret = mtk_mii_rw(priv, addr, devad, reg, MDIO_CMD_ADDR, MDIO_ST_C45);
if (ret)
return ret;
return mtk_mii_rw(priv, addr, devad, 0, MDIO_CMD_READ_C45,
MDIO_ST_C45);
}
/* Direct MDIO clause 45 write via SoC */
static int mtk_mmd_write(struct mtk_eth_priv *priv, u8 addr, u8 devad,
u16 reg, u16 val)
{
int ret;
ret = mtk_mii_rw(priv, addr, devad, reg, MDIO_CMD_ADDR, MDIO_ST_C45);
if (ret)
return ret;
return mtk_mii_rw(priv, addr, devad, val, MDIO_CMD_WRITE,
MDIO_ST_C45);
}
/* Indirect MDIO clause 45 read via MII registers */
static int mtk_mmd_ind_read(struct mtk_eth_priv *priv, u8 addr, u8 devad,
u16 reg)
{
int ret;
ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
(MMD_ADDR << MMD_CMD_S) |
((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
if (ret)
return ret;
ret = priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, reg);
if (ret)
return ret;
ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
(MMD_DATA << MMD_CMD_S) |
((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
if (ret)
return ret;
return priv->mii_read(priv, addr, MII_MMD_ADDR_DATA_REG);
}
/* Indirect MDIO clause 45 write via MII registers */
static int mtk_mmd_ind_write(struct mtk_eth_priv *priv, u8 addr, u8 devad,
u16 reg, u16 val)
{
int ret;
ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
(MMD_ADDR << MMD_CMD_S) |
((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
if (ret)
return ret;
ret = priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, reg);
if (ret)
return ret;
ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
(MMD_DATA << MMD_CMD_S) |
((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
if (ret)
return ret;
return priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, val);
}
/*
* MT7530 Internal Register Address Bits
* -------------------------------------------------------------------
* | 15 14 13 12 11 10 9 8 7 6 | 5 4 3 2 | 1 0 |
* |----------------------------------------|---------------|--------|
* | Page Address | Reg Address | Unused |
* -------------------------------------------------------------------
*/
static int mt753x_reg_read(struct mtk_eth_priv *priv, u32 reg, u32 *data)
{
int ret, low_word, high_word;
/* Write page address */
ret = mtk_mii_write(priv, priv->mt753x_smi_addr, 0x1f, reg >> 6);
if (ret)
return ret;
/* Read low word */
low_word = mtk_mii_read(priv, priv->mt753x_smi_addr, (reg >> 2) & 0xf);
if (low_word < 0)
return low_word;
/* Read high word */
high_word = mtk_mii_read(priv, priv->mt753x_smi_addr, 0x10);
if (high_word < 0)
return high_word;
if (data)
*data = ((u32)high_word << 16) | (low_word & 0xffff);
return 0;
}
static int mt753x_reg_write(struct mtk_eth_priv *priv, u32 reg, u32 data)
{
int ret;
/* Write page address */
ret = mtk_mii_write(priv, priv->mt753x_smi_addr, 0x1f, reg >> 6);
if (ret)
return ret;
/* Write low word */
ret = mtk_mii_write(priv, priv->mt753x_smi_addr, (reg >> 2) & 0xf,
data & 0xffff);
if (ret)
return ret;
/* Write high word */
return mtk_mii_write(priv, priv->mt753x_smi_addr, 0x10, data >> 16);
}
static void mt753x_reg_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
u32 set)
{
u32 val;
mt753x_reg_read(priv, reg, &val);
val &= ~clr;
val |= set;
mt753x_reg_write(priv, reg, val);
}
/* Indirect MDIO clause 22/45 access */
static int mt7531_mii_rw(struct mtk_eth_priv *priv, int phy, int reg, u16 data,
u32 cmd, u32 st)
{
ulong timeout;
u32 val, timeout_ms;
int ret = 0;
val = (st << MDIO_ST_S) |
((cmd << MDIO_CMD_S) & MDIO_CMD_M) |
((phy << MDIO_PHY_ADDR_S) & MDIO_PHY_ADDR_M) |
((reg << MDIO_REG_ADDR_S) & MDIO_REG_ADDR_M);
if (cmd == MDIO_CMD_WRITE || cmd == MDIO_CMD_ADDR)
val |= data & MDIO_RW_DATA_M;
mt753x_reg_write(priv, MT7531_PHY_IAC, val | PHY_ACS_ST);
timeout_ms = 100;
timeout = get_timer(0);
while (1) {
mt753x_reg_read(priv, MT7531_PHY_IAC, &val);
if ((val & PHY_ACS_ST) == 0)
break;
if (get_timer(timeout) > timeout_ms)
return -ETIMEDOUT;
}
if (cmd == MDIO_CMD_READ || cmd == MDIO_CMD_READ_C45) {
mt753x_reg_read(priv, MT7531_PHY_IAC, &val);
ret = val & MDIO_RW_DATA_M;
}
return ret;
}
static int mt7531_mii_ind_read(struct mtk_eth_priv *priv, u8 phy, u8 reg)
{
u8 phy_addr;
if (phy >= MT753X_NUM_PHYS)
return -EINVAL;
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, phy);
return mt7531_mii_rw(priv, phy_addr, reg, 0, MDIO_CMD_READ,
MDIO_ST_C22);
}
static int mt7531_mii_ind_write(struct mtk_eth_priv *priv, u8 phy, u8 reg,
u16 val)
{
u8 phy_addr;
if (phy >= MT753X_NUM_PHYS)
return -EINVAL;
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, phy);
return mt7531_mii_rw(priv, phy_addr, reg, val, MDIO_CMD_WRITE,
MDIO_ST_C22);
}
int mt7531_mmd_ind_read(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg)
{
u8 phy_addr;
int ret;
if (addr >= MT753X_NUM_PHYS)
return -EINVAL;
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, addr);
ret = mt7531_mii_rw(priv, phy_addr, devad, reg, MDIO_CMD_ADDR,
MDIO_ST_C45);
if (ret)
return ret;
return mt7531_mii_rw(priv, phy_addr, devad, 0, MDIO_CMD_READ_C45,
MDIO_ST_C45);
}
static int mt7531_mmd_ind_write(struct mtk_eth_priv *priv, u8 addr, u8 devad,
u16 reg, u16 val)
{
u8 phy_addr;
int ret;
if (addr >= MT753X_NUM_PHYS)
return 0;
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, addr);
ret = mt7531_mii_rw(priv, phy_addr, devad, reg, MDIO_CMD_ADDR,
MDIO_ST_C45);
if (ret)
return ret;
return mt7531_mii_rw(priv, phy_addr, devad, val, MDIO_CMD_WRITE,
MDIO_ST_C45);
}
static int mtk_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
{
struct mtk_eth_priv *priv = bus->priv;
if (devad < 0)
return priv->mii_read(priv, addr, reg);
else
return priv->mmd_read(priv, addr, devad, reg);
}
static int mtk_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
u16 val)
{
struct mtk_eth_priv *priv = bus->priv;
if (devad < 0)
return priv->mii_write(priv, addr, reg, val);
else
return priv->mmd_write(priv, addr, devad, reg, val);
}
static int mtk_mdio_register(struct udevice *dev)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
struct mii_dev *mdio_bus = mdio_alloc();
int ret;
if (!mdio_bus)
return -ENOMEM;
/* Assign MDIO access APIs according to the switch/phy */
switch (priv->sw) {
case SW_MT7530:
priv->mii_read = mtk_mii_read;
priv->mii_write = mtk_mii_write;
priv->mmd_read = mtk_mmd_ind_read;
priv->mmd_write = mtk_mmd_ind_write;
break;
case SW_MT7531:
priv->mii_read = mt7531_mii_ind_read;
priv->mii_write = mt7531_mii_ind_write;
priv->mmd_read = mt7531_mmd_ind_read;
priv->mmd_write = mt7531_mmd_ind_write;
break;
default:
priv->mii_read = mtk_mii_read;
priv->mii_write = mtk_mii_write;
priv->mmd_read = mtk_mmd_read;
priv->mmd_write = mtk_mmd_write;
}
mdio_bus->read = mtk_mdio_read;
mdio_bus->write = mtk_mdio_write;
snprintf(mdio_bus->name, sizeof(mdio_bus->name), dev->name);
mdio_bus->priv = (void *)priv;
ret = mdio_register(mdio_bus);
if (ret)
return ret;
priv->mdio_bus = mdio_bus;
return 0;
}
static int mt753x_core_reg_read(struct mtk_eth_priv *priv, u32 reg)
{
u8 phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, 0);
return priv->mmd_read(priv, phy_addr, 0x1f, reg);
}
static void mt753x_core_reg_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
{
u8 phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, 0);
priv->mmd_write(priv, phy_addr, 0x1f, reg, val);
}
static int mt7530_pad_clk_setup(struct mtk_eth_priv *priv, int mode)
{
u32 ncpo1, ssc_delta;
switch (mode) {
case PHY_INTERFACE_MODE_RGMII:
ncpo1 = 0x0c80;
ssc_delta = 0x87;
break;
default:
printf("error: xMII mode %d not supported\n", mode);
return -EINVAL;
}
/* Disable MT7530 core clock */
mt753x_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG, 0);
/* Disable MT7530 PLL */
mt753x_core_reg_write(priv, CORE_GSWPLL_GRP1,
(2 << RG_GSWPLL_POSDIV_200M_S) |
(32 << RG_GSWPLL_FBKDIV_200M_S));
/* For MT7530 core clock = 500Mhz */
mt753x_core_reg_write(priv, CORE_GSWPLL_GRP2,
(1 << RG_GSWPLL_POSDIV_500M_S) |
(25 << RG_GSWPLL_FBKDIV_500M_S));
/* Enable MT7530 PLL */
mt753x_core_reg_write(priv, CORE_GSWPLL_GRP1,
(2 << RG_GSWPLL_POSDIV_200M_S) |
(32 << RG_GSWPLL_FBKDIV_200M_S) |
RG_GSWPLL_EN_PRE);
udelay(20);
mt753x_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
/* Setup the MT7530 TRGMII Tx Clock */
mt753x_core_reg_write(priv, CORE_PLL_GROUP5, ncpo1);
mt753x_core_reg_write(priv, CORE_PLL_GROUP6, 0);
mt753x_core_reg_write(priv, CORE_PLL_GROUP10, ssc_delta);
mt753x_core_reg_write(priv, CORE_PLL_GROUP11, ssc_delta);
mt753x_core_reg_write(priv, CORE_PLL_GROUP4, RG_SYSPLL_DDSFBK_EN |
RG_SYSPLL_BIAS_EN | RG_SYSPLL_BIAS_LPF_EN);
mt753x_core_reg_write(priv, CORE_PLL_GROUP2,
RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
(1 << RG_SYSPLL_POSDIV_S));
mt753x_core_reg_write(priv, CORE_PLL_GROUP7,
RG_LCDDS_PCW_NCPO_CHG | (3 << RG_LCCDS_C_S) |
RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
/* Enable MT7530 core clock */
mt753x_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG,
REG_GSWCK_EN | REG_TRGMIICK_EN);
return 0;
}
static void mt7530_mac_control(struct mtk_eth_priv *priv, bool enable)
{
u32 pmcr = FORCE_MODE;
if (enable)
pmcr = priv->mt753x_pmcr;
mt753x_reg_write(priv, PMCR_REG(6), pmcr);
}
static int mt7530_setup(struct mtk_eth_priv *priv)
{
u16 phy_addr, phy_val;
u32 val, txdrv;
int i;
if (!MTK_HAS_CAPS(priv->soc->caps, MTK_TRGMII_MT7621_CLK)) {
/* Select 250MHz clk for RGMII mode */
mtk_ethsys_rmw(priv, ETHSYS_CLKCFG0_REG,
ETHSYS_TRGMII_CLK_SEL362_5, 0);
txdrv = 8;
} else {
txdrv = 4;
}
/* Modify HWTRAP first to allow direct access to internal PHYs */
mt753x_reg_read(priv, HWTRAP_REG, &val);
val |= CHG_TRAP;
val &= ~C_MDIO_BPS;
mt753x_reg_write(priv, MHWTRAP_REG, val);
/* Calculate the phy base address */
val = ((val & SMI_ADDR_M) >> SMI_ADDR_S) << 3;
priv->mt753x_phy_base = (val | 0x7) + 1;
/* Turn off PHYs */
for (i = 0; i < MT753X_NUM_PHYS; i++) {
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
phy_val |= BMCR_PDOWN;
priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
}
/* Force MAC link down before reset */
mt753x_reg_write(priv, PMCR_REG(5), FORCE_MODE);
mt753x_reg_write(priv, PMCR_REG(6), FORCE_MODE);
/* MT7530 reset */
mt753x_reg_write(priv, SYS_CTRL_REG, SW_SYS_RST | SW_REG_RST);
udelay(100);
val = (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
MAC_MODE | FORCE_MODE |
MAC_TX_EN | MAC_RX_EN |
BKOFF_EN | BACKPR_EN |
(SPEED_1000M << FORCE_SPD_S) |
FORCE_DPX | FORCE_LINK;
/* MT7530 Port6: Forced 1000M/FD, FC disabled */
priv->mt753x_pmcr = val;
/* MT7530 Port5: Forced link down */
mt753x_reg_write(priv, PMCR_REG(5), FORCE_MODE);
/* Keep MAC link down before starting eth */
mt753x_reg_write(priv, PMCR_REG(6), FORCE_MODE);
/* MT7530 Port6: Set to RGMII */
mt753x_reg_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_M, P6_INTF_MODE_RGMII);
/* Hardware Trap: Enable Port6, Disable Port5 */
mt753x_reg_read(priv, HWTRAP_REG, &val);
val |= CHG_TRAP | LOOPDET_DIS | P5_INTF_DIS |
(P5_INTF_SEL_GMAC5 << P5_INTF_SEL_S) |
(P5_INTF_MODE_RGMII << P5_INTF_MODE_S);
val &= ~(C_MDIO_BPS | P6_INTF_DIS);
mt753x_reg_write(priv, MHWTRAP_REG, val);
/* Setup switch core pll */
mt7530_pad_clk_setup(priv, priv->phy_interface);
/* Lower Tx Driving for TRGMII path */
for (i = 0 ; i < NUM_TRGMII_CTRL ; i++)
mt753x_reg_write(priv, MT7530_TRGMII_TD_ODT(i),
(txdrv << TD_DM_DRVP_S) |
(txdrv << TD_DM_DRVN_S));
for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
mt753x_reg_rmw(priv, MT7530_TRGMII_RD(i), RD_TAP_M, 16);
/* Turn on PHYs */
for (i = 0; i < MT753X_NUM_PHYS; i++) {
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
phy_val &= ~BMCR_PDOWN;
priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
}
return 0;
}
static void mt7531_core_pll_setup(struct mtk_eth_priv *priv, int mcm)
{
/* Step 1 : Disable MT7531 COREPLL */
mt753x_reg_rmw(priv, MT7531_PLLGP_EN, EN_COREPLL, 0);
/* Step 2: switch to XTAL output */
mt753x_reg_rmw(priv, MT7531_PLLGP_EN, SW_CLKSW, SW_CLKSW);
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_EN, 0);
/* Step 3: disable PLLGP and enable program PLLGP */
mt753x_reg_rmw(priv, MT7531_PLLGP_EN, SW_PLLGP, SW_PLLGP);
/* Step 4: program COREPLL output frequency to 500MHz */
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_POSDIV_M,
2 << RG_COREPLL_POSDIV_S);
udelay(25);
/* Currently, support XTAL 25Mhz only */
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_SDM_PCW_M,
0x140000 << RG_COREPLL_SDM_PCW_S);
/* Set feedback divide ratio update signal to high */
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_SDM_PCW_CHG,
RG_COREPLL_SDM_PCW_CHG);
/* Wait for at least 16 XTAL clocks */
udelay(10);
/* Step 5: set feedback divide ratio update signal to low */
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_SDM_PCW_CHG, 0);
/* add enable 325M clock for SGMII */
mt753x_reg_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
/* add enable 250SSC clock for RGMII */
mt753x_reg_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
/*Step 6: Enable MT7531 PLL */
mt753x_reg_rmw(priv, MT7531_PLLGP_CR0, RG_COREPLL_EN, RG_COREPLL_EN);
mt753x_reg_rmw(priv, MT7531_PLLGP_EN, EN_COREPLL, EN_COREPLL);
udelay(25);
}
static int mt7531_port_sgmii_init(struct mtk_eth_priv *priv,
u32 port)
{
if (port != 5 && port != 6) {
printf("mt7531: port %d is not a SGMII port\n", port);
return -EINVAL;
}
/* Set SGMII GEN2 speed(2.5G) */
mt753x_reg_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port),
SGMSYS_SPEED_2500, SGMSYS_SPEED_2500);
/* Disable SGMII AN */
mt753x_reg_rmw(priv, MT7531_PCS_CONTROL_1(port),
SGMII_AN_ENABLE, 0);
/* SGMII force mode setting */
mt753x_reg_write(priv, MT7531_SGMII_MODE(port), SGMII_FORCE_MODE);
/* Release PHYA power down state */
mt753x_reg_rmw(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
SGMII_PHYA_PWD, 0);
return 0;
}
static int mt7531_port_rgmii_init(struct mtk_eth_priv *priv, u32 port)
{
u32 val;
if (port != 5) {
printf("error: RGMII mode is not available for port %d\n",
port);
return -EINVAL;
}
mt753x_reg_read(priv, MT7531_CLKGEN_CTRL, &val);
val |= GP_CLK_EN;
val &= ~GP_MODE_M;
val |= GP_MODE_RGMII << GP_MODE_S;
val |= TXCLK_NO_REVERSE;
val |= RXCLK_NO_DELAY;
val &= ~CLK_SKEW_IN_M;
val |= CLK_SKEW_IN_NO_CHANGE << CLK_SKEW_IN_S;
val &= ~CLK_SKEW_OUT_M;
val |= CLK_SKEW_OUT_NO_CHANGE << CLK_SKEW_OUT_S;
mt753x_reg_write(priv, MT7531_CLKGEN_CTRL, val);
return 0;
}
static void mt7531_phy_setting(struct mtk_eth_priv *priv)
{
int i;
u32 val;
for (i = 0; i < MT753X_NUM_PHYS; i++) {
/* Enable HW auto downshift */
priv->mii_write(priv, i, 0x1f, 0x1);
val = priv->mii_read(priv, i, PHY_EXT_REG_14);
val |= PHY_EN_DOWN_SHFIT;
priv->mii_write(priv, i, PHY_EXT_REG_14, val);
/* PHY link down power saving enable */
val = priv->mii_read(priv, i, PHY_EXT_REG_17);
val |= PHY_LINKDOWN_POWER_SAVING_EN;
priv->mii_write(priv, i, PHY_EXT_REG_17, val);
val = priv->mmd_read(priv, i, 0x1e, PHY_DEV1E_REG_0C6);
val &= ~PHY_POWER_SAVING_M;
val |= PHY_POWER_SAVING_TX << PHY_POWER_SAVING_S;
priv->mmd_write(priv, i, 0x1e, PHY_DEV1E_REG_0C6, val);
}
}
static void mt7531_mac_control(struct mtk_eth_priv *priv, bool enable)
{
u32 pmcr = FORCE_MODE_LNK;
if (enable)
pmcr = priv->mt753x_pmcr;
mt753x_reg_write(priv, PMCR_REG(5), pmcr);
mt753x_reg_write(priv, PMCR_REG(6), pmcr);
}
static int mt7531_setup(struct mtk_eth_priv *priv)
{
u16 phy_addr, phy_val;
u32 val;
u32 pmcr;
u32 port5_sgmii;
int i;
priv->mt753x_phy_base = (priv->mt753x_smi_addr + 1) &
MT753X_SMI_ADDR_MASK;
/* Turn off PHYs */
for (i = 0; i < MT753X_NUM_PHYS; i++) {
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
phy_val |= BMCR_PDOWN;
priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
}
/* Force MAC link down before reset */
mt753x_reg_write(priv, PMCR_REG(5), FORCE_MODE_LNK);
mt753x_reg_write(priv, PMCR_REG(6), FORCE_MODE_LNK);
/* Switch soft reset */
mt753x_reg_write(priv, SYS_CTRL_REG, SW_SYS_RST | SW_REG_RST);
udelay(100);
/* Enable MDC input Schmitt Trigger */
mt753x_reg_rmw(priv, MT7531_SMT0_IOLB, SMT_IOLB_5_SMI_MDC_EN,
SMT_IOLB_5_SMI_MDC_EN);
mt7531_core_pll_setup(priv, priv->mcm);
mt753x_reg_read(priv, MT7531_TOP_SIG_SR, &val);
port5_sgmii = !!(val & PAD_DUAL_SGMII_EN);
/* port5 support either RGMII or SGMII, port6 only support SGMII. */
switch (priv->phy_interface) {
case PHY_INTERFACE_MODE_RGMII:
if (!port5_sgmii)
mt7531_port_rgmii_init(priv, 5);
break;
case PHY_INTERFACE_MODE_SGMII:
mt7531_port_sgmii_init(priv, 6);
if (port5_sgmii)
mt7531_port_sgmii_init(priv, 5);
break;
default:
break;
}
pmcr = MT7531_FORCE_MODE |
(IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
MAC_MODE | MAC_TX_EN | MAC_RX_EN |
BKOFF_EN | BACKPR_EN |
FORCE_RX_FC | FORCE_TX_FC |
(SPEED_1000M << FORCE_SPD_S) | FORCE_DPX |
FORCE_LINK;
priv->mt753x_pmcr = pmcr;
/* Keep MAC link down before starting eth */
mt753x_reg_write(priv, PMCR_REG(5), FORCE_MODE_LNK);
mt753x_reg_write(priv, PMCR_REG(6), FORCE_MODE_LNK);
/* Turn on PHYs */
for (i = 0; i < MT753X_NUM_PHYS; i++) {
phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
phy_val &= ~BMCR_PDOWN;
priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
}
mt7531_phy_setting(priv);
/* Enable Internal PHYs */
val = mt753x_core_reg_read(priv, CORE_PLL_GROUP4);
val |= MT7531_BYPASS_MODE;
val &= ~MT7531_POWER_ON_OFF;
mt753x_core_reg_write(priv, CORE_PLL_GROUP4, val);
return 0;
}
int mt753x_switch_init(struct mtk_eth_priv *priv)
{
int ret;
int i;
/* Global reset switch */
if (priv->mcm) {
reset_assert(&priv->rst_mcm);
udelay(1000);
reset_deassert(&priv->rst_mcm);
mdelay(1000);
} else if (dm_gpio_is_valid(&priv->rst_gpio)) {
dm_gpio_set_value(&priv->rst_gpio, 0);
udelay(1000);
dm_gpio_set_value(&priv->rst_gpio, 1);
mdelay(1000);
}
ret = priv->switch_init(priv);
if (ret)
return ret;
/* Set port isolation */
for (i = 0; i < MT753X_NUM_PORTS; i++) {
/* Set port matrix mode */
if (i != 6)
mt753x_reg_write(priv, PCR_REG(i),
(0x40 << PORT_MATRIX_S));
else
mt753x_reg_write(priv, PCR_REG(i),
(0x3f << PORT_MATRIX_S));
/* Set port mode to user port */
mt753x_reg_write(priv, PVC_REG(i),
(0x8100 << STAG_VPID_S) |
(VLAN_ATTR_USER << VLAN_ATTR_S));
}
return 0;
}
static void mtk_phy_link_adjust(struct mtk_eth_priv *priv)
{
u16 lcl_adv = 0, rmt_adv = 0;
u8 flowctrl;
u32 mcr;
mcr = (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
(MAC_RX_PKT_LEN_1536 << MAC_RX_PKT_LEN_S) |
MAC_MODE | FORCE_MODE |
MAC_TX_EN | MAC_RX_EN |
BKOFF_EN | BACKPR_EN;
switch (priv->phydev->speed) {
case SPEED_10:
mcr |= (SPEED_10M << FORCE_SPD_S);
break;
case SPEED_100:
mcr |= (SPEED_100M << FORCE_SPD_S);
break;
case SPEED_1000:
mcr |= (SPEED_1000M << FORCE_SPD_S);
break;
};
if (priv->phydev->link)
mcr |= FORCE_LINK;
if (priv->phydev->duplex) {
mcr |= FORCE_DPX;
if (priv->phydev->pause)
rmt_adv = LPA_PAUSE_CAP;
if (priv->phydev->asym_pause)
rmt_adv |= LPA_PAUSE_ASYM;
if (priv->phydev->advertising & ADVERTISED_Pause)
lcl_adv |= ADVERTISE_PAUSE_CAP;
if (priv->phydev->advertising & ADVERTISED_Asym_Pause)
lcl_adv |= ADVERTISE_PAUSE_ASYM;
flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
if (flowctrl & FLOW_CTRL_TX)
mcr |= FORCE_TX_FC;
if (flowctrl & FLOW_CTRL_RX)
mcr |= FORCE_RX_FC;
debug("rx pause %s, tx pause %s\n",
flowctrl & FLOW_CTRL_RX ? "enabled" : "disabled",
flowctrl & FLOW_CTRL_TX ? "enabled" : "disabled");
}
mtk_gmac_write(priv, GMAC_PORT_MCR(priv->gmac_id), mcr);
}
static int mtk_phy_start(struct mtk_eth_priv *priv)
{
struct phy_device *phydev = priv->phydev;
int ret;
ret = phy_startup(phydev);
if (ret) {
debug("Could not initialize PHY %s\n", phydev->dev->name);
return ret;
}
if (!phydev->link) {
debug("%s: link down.\n", phydev->dev->name);
return 0;
}
mtk_phy_link_adjust(priv);
debug("Speed: %d, %s duplex%s\n", phydev->speed,
(phydev->duplex) ? "full" : "half",
(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
return 0;
}
static int mtk_phy_probe(struct udevice *dev)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
struct phy_device *phydev;
phydev = phy_connect(priv->mdio_bus, priv->phy_addr, dev,
priv->phy_interface);
if (!phydev)
return -ENODEV;
phydev->supported &= PHY_GBIT_FEATURES;
phydev->advertising = phydev->supported;
priv->phydev = phydev;
phy_config(phydev);
return 0;
}
static void mtk_sgmii_init(struct mtk_eth_priv *priv)
{
/* Set SGMII GEN2 speed(2.5G) */
setbits_le32(priv->sgmii_base + priv->soc->ana_rgc3,
SGMSYS_SPEED_2500);
/* Disable SGMII AN */
clrsetbits_le32(priv->sgmii_base + SGMSYS_PCS_CONTROL_1,
SGMII_AN_ENABLE, 0);
/* SGMII force mode setting */
writel(SGMII_FORCE_MODE, priv->sgmii_base + SGMSYS_SGMII_MODE);
/* SGMII PN SWAP setting */
if (priv->pn_swap) {
setbits_le32(priv->sgmii_base + SGMSYS_QPHY_WRAP_CTRL,
SGMII_PN_SWAP_TX_RX);
}
/* Release PHYA power down state */
clrsetbits_le32(priv->sgmii_base + SGMSYS_QPHY_PWR_STATE_CTRL,
SGMII_PHYA_PWD, 0);
}
static void mtk_mac_init(struct mtk_eth_priv *priv)
{
int i, ge_mode = 0;
u32 mcr;
switch (priv->phy_interface) {
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII:
ge_mode = GE_MODE_RGMII;
break;
case PHY_INTERFACE_MODE_SGMII:
ge_mode = GE_MODE_RGMII;
mtk_ethsys_rmw(priv, ETHSYS_SYSCFG0_REG, SYSCFG0_SGMII_SEL_M,
SYSCFG0_SGMII_SEL(priv->gmac_id));
mtk_sgmii_init(priv);
break;
case PHY_INTERFACE_MODE_MII:
case PHY_INTERFACE_MODE_GMII:
ge_mode = GE_MODE_MII;
break;
case PHY_INTERFACE_MODE_RMII:
ge_mode = GE_MODE_RMII;
break;
default:
break;
}
/* set the gmac to the right mode */
mtk_ethsys_rmw(priv, ETHSYS_SYSCFG0_REG,
SYSCFG0_GE_MODE_M << SYSCFG0_GE_MODE_S(priv->gmac_id),
ge_mode << SYSCFG0_GE_MODE_S(priv->gmac_id));
if (priv->force_mode) {
mcr = (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
(MAC_RX_PKT_LEN_1536 << MAC_RX_PKT_LEN_S) |
MAC_MODE | FORCE_MODE |
MAC_TX_EN | MAC_RX_EN |
BKOFF_EN | BACKPR_EN |
FORCE_LINK;
switch (priv->speed) {
case SPEED_10:
mcr |= SPEED_10M << FORCE_SPD_S;
break;
case SPEED_100:
mcr |= SPEED_100M << FORCE_SPD_S;
break;
case SPEED_1000:
mcr |= SPEED_1000M << FORCE_SPD_S;
break;
}
if (priv->duplex)
mcr |= FORCE_DPX;
mtk_gmac_write(priv, GMAC_PORT_MCR(priv->gmac_id), mcr);
}
if (MTK_HAS_CAPS(priv->soc->caps, MTK_GMAC1_TRGMII) &&
!MTK_HAS_CAPS(priv->soc->caps, MTK_TRGMII_MT7621_CLK)) {
/* Lower Tx Driving for TRGMII path */
for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
mtk_gmac_write(priv, GMAC_TRGMII_TD_ODT(i),
(8 << TD_DM_DRVP_S) |
(8 << TD_DM_DRVN_S));
mtk_gmac_rmw(priv, GMAC_TRGMII_RCK_CTRL, 0,
RX_RST | RXC_DQSISEL);
mtk_gmac_rmw(priv, GMAC_TRGMII_RCK_CTRL, RX_RST, 0);
}
}
static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
{
char *pkt_base = priv->pkt_pool;
struct mtk_tx_dma_v2 *txd;
struct mtk_rx_dma_v2 *rxd;
int i;
mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0xffff0000, 0);
udelay(500);
memset(priv->tx_ring_noc, 0, NUM_TX_DESC * priv->soc->txd_size);
memset(priv->rx_ring_noc, 0, NUM_RX_DESC * priv->soc->rxd_size);
memset(priv->pkt_pool, 0xff, TOTAL_PKT_BUF_SIZE);
flush_dcache_range((ulong)pkt_base,
(ulong)(pkt_base + TOTAL_PKT_BUF_SIZE));
priv->rx_dma_owner_idx0 = 0;
priv->tx_cpu_owner_idx0 = 0;
for (i = 0; i < NUM_TX_DESC; i++) {
txd = priv->tx_ring_noc + i * priv->soc->txd_size;
txd->txd1 = virt_to_phys(pkt_base);
txd->txd2 = PDMA_TXD2_DDONE | PDMA_TXD2_LS0;
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
txd->txd5 = PDMA_V2_TXD5_FPORT_SET(priv->gmac_id + 1);
else
txd->txd4 = PDMA_V1_TXD4_FPORT_SET(priv->gmac_id + 1);
pkt_base += PKTSIZE_ALIGN;
}
for (i = 0; i < NUM_RX_DESC; i++) {
rxd = priv->rx_ring_noc + i * priv->soc->rxd_size;
rxd->rxd1 = virt_to_phys(pkt_base);
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
rxd->rxd2 = PDMA_V2_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
else
rxd->rxd2 = PDMA_V1_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
pkt_base += PKTSIZE_ALIGN;
}
mtk_pdma_write(priv, TX_BASE_PTR_REG(0),
virt_to_phys(priv->tx_ring_noc));
mtk_pdma_write(priv, TX_MAX_CNT_REG(0), NUM_TX_DESC);
mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
mtk_pdma_write(priv, RX_BASE_PTR_REG(0),
virt_to_phys(priv->rx_ring_noc));
mtk_pdma_write(priv, RX_MAX_CNT_REG(0), NUM_RX_DESC);
mtk_pdma_write(priv, RX_CRX_IDX_REG(0), NUM_RX_DESC - 1);
mtk_pdma_write(priv, PDMA_RST_IDX_REG, RST_DTX_IDX0 | RST_DRX_IDX0);
}
static int mtk_eth_start(struct udevice *dev)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
int ret;
/* Reset FE */
reset_assert(&priv->rst_fe);
udelay(1000);
reset_deassert(&priv->rst_fe);
mdelay(10);
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
setbits_le32(priv->fe_base + FE_GLO_MISC_REG, PDMA_VER_V2);
/* Packets forward to PDMA */
mtk_gdma_write(priv, priv->gmac_id, GDMA_IG_CTRL_REG, GDMA_FWD_TO_CPU);
if (priv->gmac_id == 0)
mtk_gdma_write(priv, 1, GDMA_IG_CTRL_REG, GDMA_FWD_DISCARD);
else
mtk_gdma_write(priv, 0, GDMA_IG_CTRL_REG, GDMA_FWD_DISCARD);
udelay(500);
mtk_eth_fifo_init(priv);
if (priv->switch_mac_control)
priv->switch_mac_control(priv, true);
/* Start PHY */
if (priv->sw == SW_NONE) {
ret = mtk_phy_start(priv);
if (ret)
return ret;
}
mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0,
TX_WB_DDONE | RX_DMA_EN | TX_DMA_EN);
udelay(500);
return 0;
}
static void mtk_eth_stop(struct udevice *dev)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
if (priv->switch_mac_control)
priv->switch_mac_control(priv, false);
mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG,
TX_WB_DDONE | RX_DMA_EN | TX_DMA_EN, 0);
udelay(500);
wait_for_bit_le32(priv->fe_base + priv->soc->pdma_base + PDMA_GLO_CFG_REG,
RX_DMA_BUSY | TX_DMA_BUSY, 0, 5000, 0);
}
static int mtk_eth_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mtk_eth_priv *priv = dev_get_priv(dev);
unsigned char *mac = pdata->enetaddr;
u32 macaddr_lsb, macaddr_msb;
macaddr_msb = ((u32)mac[0] << 8) | (u32)mac[1];
macaddr_lsb = ((u32)mac[2] << 24) | ((u32)mac[3] << 16) |
((u32)mac[4] << 8) | (u32)mac[5];
mtk_gdma_write(priv, priv->gmac_id, GDMA_MAC_MSB_REG, macaddr_msb);
mtk_gdma_write(priv, priv->gmac_id, GDMA_MAC_LSB_REG, macaddr_lsb);
return 0;
}
static int mtk_eth_send(struct udevice *dev, void *packet, int length)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->tx_cpu_owner_idx0;
struct mtk_tx_dma_v2 *txd;
void *pkt_base;
txd = priv->tx_ring_noc + idx * priv->soc->txd_size;
if (!(txd->txd2 & PDMA_TXD2_DDONE)) {
debug("mtk-eth: TX DMA descriptor ring is full\n");
return -EPERM;
}
pkt_base = (void *)phys_to_virt(txd->txd1);
memcpy(pkt_base, packet, length);
flush_dcache_range((ulong)pkt_base, (ulong)pkt_base +
roundup(length, ARCH_DMA_MINALIGN));
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
txd->txd2 = PDMA_TXD2_LS0 | PDMA_V2_TXD2_SDL0_SET(length);
else
txd->txd2 = PDMA_TXD2_LS0 | PDMA_V1_TXD2_SDL0_SET(length);
priv->tx_cpu_owner_idx0 = (priv->tx_cpu_owner_idx0 + 1) % NUM_TX_DESC;
mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
return 0;
}
static int mtk_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->rx_dma_owner_idx0;
struct mtk_rx_dma_v2 *rxd;
uchar *pkt_base;
u32 length;
rxd = priv->rx_ring_noc + idx * priv->soc->rxd_size;
if (!(rxd->rxd2 & PDMA_RXD2_DDONE)) {
debug("mtk-eth: RX DMA descriptor ring is empty\n");
return -EAGAIN;
}
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
length = PDMA_V2_RXD2_PLEN0_GET(rxd->rxd2);
else
length = PDMA_V1_RXD2_PLEN0_GET(rxd->rxd2);
pkt_base = (void *)phys_to_virt(rxd->rxd1);
invalidate_dcache_range((ulong)pkt_base, (ulong)pkt_base +
roundup(length, ARCH_DMA_MINALIGN));
if (packetp)
*packetp = pkt_base;
return length;
}
static int mtk_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->rx_dma_owner_idx0;
struct mtk_rx_dma_v2 *rxd;
rxd = priv->rx_ring_noc + idx * priv->soc->rxd_size;
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
rxd->rxd2 = PDMA_V2_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
else
rxd->rxd2 = PDMA_V1_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
mtk_pdma_write(priv, RX_CRX_IDX_REG(0), idx);
priv->rx_dma_owner_idx0 = (priv->rx_dma_owner_idx0 + 1) % NUM_RX_DESC;
return 0;
}
static int mtk_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mtk_eth_priv *priv = dev_get_priv(dev);
ulong iobase = pdata->iobase;
int ret;
/* Frame Engine Register Base */
priv->fe_base = (void *)iobase;
/* GMAC Register Base */
priv->gmac_base = (void *)(iobase + GMAC_BASE);
/* MDIO register */
ret = mtk_mdio_register(dev);
if (ret)
return ret;
/* Prepare for tx/rx rings */
priv->tx_ring_noc = (void *)
noncached_alloc(priv->soc->txd_size * NUM_TX_DESC,
ARCH_DMA_MINALIGN);
priv->rx_ring_noc = (void *)
noncached_alloc(priv->soc->rxd_size * NUM_RX_DESC,
ARCH_DMA_MINALIGN);
/* Set MAC mode */
mtk_mac_init(priv);
/* Probe phy if switch is not specified */
if (priv->sw == SW_NONE)
return mtk_phy_probe(dev);
/* Initialize switch */
return mt753x_switch_init(priv);
}
static int mtk_eth_remove(struct udevice *dev)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
/* MDIO unregister */
mdio_unregister(priv->mdio_bus);
mdio_free(priv->mdio_bus);
/* Stop possibly started DMA */
mtk_eth_stop(dev);
return 0;
}
static int mtk_eth_of_to_plat(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct mtk_eth_priv *priv = dev_get_priv(dev);
struct ofnode_phandle_args args;
struct regmap *regmap;
const char *str;
ofnode subnode;
int ret;
priv->soc = (const struct mtk_soc_data *)dev_get_driver_data(dev);
if (!priv->soc) {
dev_err(dev, "missing soc compatible data\n");
return -EINVAL;
}
pdata->iobase = (phys_addr_t)dev_remap_addr(dev);
/* get corresponding ethsys phandle */
ret = dev_read_phandle_with_args(dev, "mediatek,ethsys", NULL, 0, 0,
&args);
if (ret)
return ret;
priv->ethsys_regmap = syscon_node_to_regmap(args.node);
if (IS_ERR(priv->ethsys_regmap))
return PTR_ERR(priv->ethsys_regmap);
/* Reset controllers */
ret = reset_get_by_name(dev, "fe", &priv->rst_fe);
if (ret) {
printf("error: Unable to get reset ctrl for frame engine\n");
return ret;
}
priv->gmac_id = dev_read_u32_default(dev, "mediatek,gmac-id", 0);
/* Interface mode is required */
pdata->phy_interface = dev_read_phy_mode(dev);
priv->phy_interface = pdata->phy_interface;
if (pdata->phy_interface == PHY_INTERFACE_MODE_NA) {
printf("error: phy-mode is not set\n");
return -EINVAL;
}
/* Force mode or autoneg */
subnode = ofnode_find_subnode(dev_ofnode(dev), "fixed-link");
if (ofnode_valid(subnode)) {
priv->force_mode = 1;
priv->speed = ofnode_read_u32_default(subnode, "speed", 0);
priv->duplex = ofnode_read_bool(subnode, "full-duplex");
if (priv->speed != SPEED_10 && priv->speed != SPEED_100 &&
priv->speed != SPEED_1000) {
printf("error: no valid speed set in fixed-link\n");
return -EINVAL;
}
}
if (priv->phy_interface == PHY_INTERFACE_MODE_SGMII) {
/* get corresponding sgmii phandle */
ret = dev_read_phandle_with_args(dev, "mediatek,sgmiisys",
NULL, 0, 0, &args);
if (ret)
return ret;
regmap = syscon_node_to_regmap(args.node);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
priv->sgmii_base = regmap_get_range(regmap, 0);
if (!priv->sgmii_base) {
dev_err(dev, "Unable to find sgmii\n");
return -ENODEV;
}
priv->pn_swap = ofnode_read_bool(args.node, "pn_swap");
}
/* check for switch first, otherwise phy will be used */
priv->sw = SW_NONE;
priv->switch_init = NULL;
priv->switch_mac_control = NULL;
str = dev_read_string(dev, "mediatek,switch");
if (str) {
if (!strcmp(str, "mt7530")) {
priv->sw = SW_MT7530;
priv->switch_init = mt7530_setup;
priv->switch_mac_control = mt7530_mac_control;
priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
} else if (!strcmp(str, "mt7531")) {
priv->sw = SW_MT7531;
priv->switch_init = mt7531_setup;
priv->switch_mac_control = mt7531_mac_control;
priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
} else {
printf("error: unsupported switch\n");
return -EINVAL;
}
priv->mcm = dev_read_bool(dev, "mediatek,mcm");
if (priv->mcm) {
ret = reset_get_by_name(dev, "mcm", &priv->rst_mcm);
if (ret) {
printf("error: no reset ctrl for mcm\n");
return ret;
}
} else {
gpio_request_by_name(dev, "reset-gpios", 0,
&priv->rst_gpio, GPIOD_IS_OUT);
}
} else {
ret = dev_read_phandle_with_args(dev, "phy-handle", NULL, 0,
0, &args);
if (ret) {
printf("error: phy-handle is not specified\n");
return ret;
}
priv->phy_addr = ofnode_read_s32_default(args.node, "reg", -1);
if (priv->phy_addr < 0) {
printf("error: phy address is not specified\n");
return ret;
}
}
return 0;
}
static const struct mtk_soc_data mt7986_data = {
.caps = MT7986_CAPS,
.ana_rgc3 = 0x128,
.pdma_base = PDMA_V2_BASE,
.txd_size = sizeof(struct mtk_tx_dma_v2),
.rxd_size = sizeof(struct mtk_rx_dma_v2),
};
static const struct mtk_soc_data mt7981_data = {
.caps = MT7986_CAPS,
.ana_rgc3 = 0x128,
.pdma_base = PDMA_V2_BASE,
.txd_size = sizeof(struct mtk_tx_dma_v2),
.rxd_size = sizeof(struct mtk_rx_dma_v2),
};
static const struct mtk_soc_data mt7629_data = {
.ana_rgc3 = 0x128,
.pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7623_data = {
.caps = MT7623_CAPS,
.pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7622_data = {
.ana_rgc3 = 0x2028,
.pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7621_data = {
.caps = MT7621_CAPS,
.pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct udevice_id mtk_eth_ids[] = {
{ .compatible = "mediatek,mt7986-eth", .data = (ulong)&mt7986_data },
{ .compatible = "mediatek,mt7981-eth", .data = (ulong)&mt7981_data },
{ .compatible = "mediatek,mt7629-eth", .data = (ulong)&mt7629_data },
{ .compatible = "mediatek,mt7623-eth", .data = (ulong)&mt7623_data },
{ .compatible = "mediatek,mt7622-eth", .data = (ulong)&mt7622_data },
{ .compatible = "mediatek,mt7621-eth", .data = (ulong)&mt7621_data },
{}
};
static const struct eth_ops mtk_eth_ops = {
.start = mtk_eth_start,
.stop = mtk_eth_stop,
.send = mtk_eth_send,
.recv = mtk_eth_recv,
.free_pkt = mtk_eth_free_pkt,
.write_hwaddr = mtk_eth_write_hwaddr,
};
U_BOOT_DRIVER(mtk_eth) = {
.name = "mtk-eth",
.id = UCLASS_ETH,
.of_match = mtk_eth_ids,
.of_to_plat = mtk_eth_of_to_plat,
.plat_auto = sizeof(struct eth_pdata),
.probe = mtk_eth_probe,
.remove = mtk_eth_remove,
.ops = &mtk_eth_ops,
.priv_auto = sizeof(struct mtk_eth_priv),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
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