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openwrt/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
Michael Pratt 953bfe2eb3 ramips: mt7620: simplify DTS properties for GMAC 
There are only 2 options in the driver
for the function of mt7620 internal switch port 4:

  EPHY mode (RJ-45, internal PHY)
  GMAC mode (RGMII, external PHY)

Let the DTS property be boolean instead of string
where EPHY mode is the default.

Fix how the properties are written
for all DTS that use them,
and add missing nodes where applicable,
and remove useless nodes,
and minor DTS formatting.

Signed-off-by: Michael Pratt <mcpratt@pm.me>
2021-06-23 14:22:18 +08:00

371 lines
10 KiB
C
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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.
*
* Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
* Copyright (C) 2009-2015 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/if_vlan.h>
#include <linux/of_net.h>
#include <asm/mach-ralink/ralink_regs.h>
#include <mt7620.h>
#include "mtk_eth_soc.h"
#include "gsw_mt7620.h"
#include "mt7530.h"
#include "mdio.h"
#define MT7620A_CDMA_CSG_CFG 0x400
#define MT7620_DMA_VID (MT7620A_CDMA_CSG_CFG | 0x30)
#define MT7620A_RESET_FE BIT(21)
#define MT7620A_RESET_ESW BIT(23)
#define MT7620_L4_VALID BIT(23)
#define MT7620_TX_DMA_UDF BIT(15)
#define TX_DMA_FP_BMAP ((0xff) << 19)
#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 GSW_REG_GDMA1_MAC_ADRL 0x508
#define GSW_REG_GDMA1_MAC_ADRH 0x50C
#define MT7621_FE_RST_GL (FE_FE_OFFSET + 0x04)
#define MT7620_FE_INT_STATUS2 (FE_FE_OFFSET + 0x08)
/* FE_INT_STATUS reg on mt7620 define CNT_GDM1_AF at BIT(29)
* but after test it should be BIT(13).
*/
#define MT7620_FE_GDM1_AF BIT(13)
static const u16 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_TX_DTX_IDX0] = RT5350_TX_DTX_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_RX_DRX_IDX0] = RT5350_RX_DRX_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,
[FE_REG_FE_INT_STATUS2] = MT7620_FE_INT_STATUS2,
};
static int mt7620_gsw_config(struct fe_priv *priv)
{
struct mt7620_gsw *gsw = (struct mt7620_gsw *) priv->soc->swpriv;
/* is the mt7530 internal or external */
if (priv->mii_bus && mdiobus_get_phy(priv->mii_bus, 0x1f)) {
mt7530_probe(priv->dev, gsw->base, NULL, 0);
mt7530_probe(priv->dev, NULL, priv->mii_bus, 1);
} else {
mt7530_probe(priv->dev, gsw->base, NULL, 1);
}
return 0;
}
static void mt7620_set_mac(struct fe_priv *priv, unsigned char *mac)
{
struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
unsigned long flags;
spin_lock_irqsave(&priv->page_lock, flags);
mtk_switch_w32(gsw, (mac[0] << 8) | mac[1], GSW_REG_SMACCR1);
mtk_switch_w32(gsw, (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
GSW_REG_SMACCR0);
spin_unlock_irqrestore(&priv->page_lock, flags);
}
static void mt7620_auto_poll(struct mt7620_gsw *gsw, int port)
{
int phy;
int lsb = -1, msb = 0;
for_each_set_bit(phy, &gsw->autopoll, 32) {
if (lsb < 0)
lsb = phy;
msb = phy;
}
if (lsb == msb && port == 4)
msb++;
else if (lsb == msb && port == 5)
lsb--;
mtk_switch_w32(gsw, PHY_AN_EN | PHY_PRE_EN | PMY_MDC_CONF(5) |
(msb << 8) | lsb, ESW_PHY_POLLING);
}
static void mt7620_port_init(struct fe_priv *priv, struct device_node *np)
{
struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
const __be32 *_id = of_get_property(np, "reg", NULL);
const __be32 *phy_addr;
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
int phy_mode;
#else
phy_interface_t phy_mode = PHY_INTERFACE_MODE_NA;
#endif
int size, id;
int shift = 12;
u32 val, mask = 0;
u32 val_delay = 0;
u32 mask_delay = GSW_REG_GPCx_TXDELAY | GSW_REG_GPCx_RXDELAY;
int min = (gsw->port4_ephy) ? (5) : (4);
if (!_id || (be32_to_cpu(*_id) < min) || (be32_to_cpu(*_id) > 5)) {
if (_id)
pr_err("%s: invalid port id %d\n", np->name,
be32_to_cpu(*_id));
else
pr_err("%s: invalid port id\n", np->name);
return;
}
id = be32_to_cpu(*_id);
if (id == 4)
shift = 14;
priv->phy->phy_fixed[id] = of_get_property(np, "mediatek,fixed-link",
&size);
if (priv->phy->phy_fixed[id] &&
(size != (4 * sizeof(*priv->phy->phy_fixed[id])))) {
pr_err("%s: invalid fixed link property\n", np->name);
priv->phy->phy_fixed[id] = NULL;
return;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
phy_mode = of_get_phy_mode(np);
#else
of_get_phy_mode(np, &phy_mode);
#endif
switch (phy_mode) {
case PHY_INTERFACE_MODE_RGMII:
mask = 0;
/* Do not touch rx/tx delay in this state to avoid problems with
* backward compability.
*/
mask_delay = 0;
break;
case PHY_INTERFACE_MODE_RGMII_ID:
mask = 0;
val_delay |= GSW_REG_GPCx_TXDELAY;
val_delay &= ~GSW_REG_GPCx_RXDELAY;
break;
case PHY_INTERFACE_MODE_RGMII_RXID:
mask = 0;
val_delay &= ~GSW_REG_GPCx_TXDELAY;
val_delay &= ~GSW_REG_GPCx_RXDELAY;
break;
case PHY_INTERFACE_MODE_RGMII_TXID:
mask = 0;
val_delay &= ~GSW_REG_GPCx_TXDELAY;
val_delay |= GSW_REG_GPCx_RXDELAY;
break;
case PHY_INTERFACE_MODE_MII:
mask = 1;
break;
case PHY_INTERFACE_MODE_RMII:
mask = 2;
break;
default:
dev_err(priv->dev, "port %d - invalid phy mode\n", id);
return;
}
priv->phy->phy_node[id] = of_parse_phandle(np, "phy-handle", 0);
if (!priv->phy->phy_node[id] && !priv->phy->phy_fixed[id])
return;
val = rt_sysc_r32(SYSC_REG_CFG1);
val &= ~(3 << shift);
val |= mask << shift;
rt_sysc_w32(val, SYSC_REG_CFG1);
if (id == 4) {
val = mtk_switch_r32(gsw, GSW_REG_GPC2);
val &= ~(mask_delay);
val |= val_delay & mask_delay;
mtk_switch_w32(gsw, val, GSW_REG_GPC2);
}
else if (id == 5) {
val = mtk_switch_r32(gsw, GSW_REG_GPC1);
val &= ~(mask_delay);
val |= val_delay & mask_delay;
mtk_switch_w32(gsw, val, GSW_REG_GPC1);
}
if (priv->phy->phy_fixed[id]) {
const __be32 *link = priv->phy->phy_fixed[id];
int tx_fc, rx_fc;
u32 val = 0;
priv->phy->speed[id] = be32_to_cpup(link++);
tx_fc = be32_to_cpup(link++);
rx_fc = be32_to_cpup(link++);
priv->phy->duplex[id] = be32_to_cpup(link++);
priv->link[id] = 1;
switch (priv->phy->speed[id]) {
case SPEED_10:
val = 0;
break;
case SPEED_100:
val = 1;
break;
case SPEED_1000:
val = 2;
break;
default:
dev_err(priv->dev, "invalid link speed: %d\n",
priv->phy->speed[id]);
priv->phy->phy_fixed[id] = 0;
return;
}
val = PMCR_SPEED(val);
val |= PMCR_LINK | PMCR_BACKPRES | PMCR_BACKOFF | PMCR_RX_EN |
PMCR_TX_EN | PMCR_FORCE | PMCR_MAC_MODE | PMCR_IPG;
if (tx_fc)
val |= PMCR_TX_FC;
if (rx_fc)
val |= PMCR_RX_FC;
if (priv->phy->duplex[id])
val |= PMCR_DUPLEX;
mtk_switch_w32(gsw, val, GSW_REG_PORT_PMCR(id));
dev_info(priv->dev, "using fixed link parameters\n");
return;
}
phy_addr = of_get_property(priv->phy->phy_node[id], "reg", NULL);
if (phy_addr && mdiobus_get_phy(priv->mii_bus, be32_to_cpup(phy_addr))) {
u32 val = PMCR_BACKPRES | PMCR_BACKOFF | PMCR_RX_EN |
PMCR_TX_EN | PMCR_MAC_MODE | PMCR_IPG;
mtk_switch_w32(gsw, val, GSW_REG_PORT_PMCR(id));
fe_connect_phy_node(priv, priv->phy->phy_node[id], id);
gsw->autopoll |= BIT(be32_to_cpup(phy_addr));
mt7620_auto_poll(gsw,id);
return;
}
}
static void mt7620_fe_reset(void)
{
fe_reset(MT7620A_RESET_FE | MT7620A_RESET_ESW);
}
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 void mt7620_tx_dma(struct fe_tx_dma *txd)
{
}
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 | FE_FLAG_RX_2B_OFFSET |
FE_FLAG_RX_SG_DMA | FE_FLAG_HAS_SWITCH;
netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX;
if (mt7620_get_eco() >= 5)
netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_IPV6_CSUM;
}
static struct fe_soc_data mt7620_data = {
.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,
.switch_init = mtk_gsw_init,
.switch_config = mt7620_gsw_config,
.port_init = mt7620_port_init,
.reg_table = mt7620_reg_table,
.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS,
.rx_int = RT5350_RX_DONE_INT,
.tx_int = RT5350_TX_DONE_INT,
.status_int = MT7620_FE_GDM1_AF,
.checksum_bit = MT7620_L4_VALID,
.has_carrier = mt7620_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 = "mediatek,mt7620-eth", .data = &mt7620_data },
{},
};
MODULE_DEVICE_TABLE(of, of_fe_match);
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