From 693f0ff3dbc53f910dff57ac15c324f7a94cc0ad Mon Sep 17 00:00:00 2001 From: John Crispin Date: Mon, 14 Dec 2015 23:50:53 +0100 Subject: [PATCH 509/513] net-next: mediatek: add support for mt7621 Add support for SoCs from the mt7620 family. This include mt7620 and mt7621. These all have one dedicated external gbit port and a builtin 5 port 100mbit switch. Additionally one of the 5 switch ports can be changed to become an additional gbit port that we can attach a phy to. This patch includes rudimentary code to power up the switch. There are a lot of magic values that get written to the switch and the internal phys. These values come straight from the SDK driver. Signed-off-by: John Crispin Signed-off-by: Felix Fietkau Signed-off-by: Michael Lee --- drivers/net/ethernet/mediatek/soc_mt7621.c | 184 ++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 drivers/net/ethernet/mediatek/soc_mt7621.c diff --git a/drivers/net/ethernet/mediatek/soc_mt7621.c b/drivers/net/ethernet/mediatek/soc_mt7621.c new file mode 100644 index 0000000..d6f7f23 --- /dev/null +++ b/drivers/net/ethernet/mediatek/soc_mt7621.c @@ -0,0 +1,184 @@ +/* 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 + * Copyright (C) 2009-2015 Felix Fietkau + * Copyright (C) 2013-2015 Michael Lee + */ + +#include +#include +#include +#include + +#include + +#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 MT7621_CDMP_IG_CTRL (MT7620A_CDMA_CSG_CFG + 0x00) +#define MT7621_CDMP_EG_CTRL (MT7620A_CDMA_CSG_CFG + 0x04) +#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 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) +#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) +#define MT7621_FE_GDM1_AF BIT(28) +#define MT7621_FE_GDM2_AF BIT(29) + +static const u16 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_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] = 0, + [FE_REG_FE_COUNTER_BASE] = MT7621_GDM1_TX_GBCNT, + [FE_REG_FE_RST_GL] = MT7621_FE_RST_GL, + [FE_REG_FE_INT_STATUS2] = MT7620_FE_INT_STATUS2, +}; + +static int mt7621_gsw_config(struct fe_priv *priv) +{ + if (priv->mii_bus && priv->mii_bus->phy_map[0x1f]) + mt7530_probe(priv->device, NULL, priv->mii_bus, 1); + + return 0; +} + +static void mt7621_fe_reset(void) +{ + fe_reset(MT7621_RESET_FE); +} + +static void mt7621_rxvlan_config(bool enable) +{ + if (enable) + fe_w32(1, MT7621_CDMP_EG_CTRL); + else + fe_w32(0, MT7621_CDMP_EG_CTRL); +} + +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); + + /* mt7621 don't have txcsum config */ + mt7620_rxcsum_config((dev->features & NETIF_F_RXCSUM)); + mt7621_rxvlan_config((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && + (priv->flags & FE_FLAG_RX_VLAN_CTAG)); + + return 0; +} + +static void mt7621_tx_dma(struct fe_tx_dma *txd) +{ + txd->txd4 = BIT(25); +} + +static void mt7621_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_NAPI_WEIGHT | + FE_FLAG_HAS_SWITCH; + + netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM | + NETIF_F_HW_VLAN_CTAG_TX | 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 mt7621_data = { + .init_data = mt7621_init_data, + .reset_fe = mt7621_fe_reset, + .set_mac = mt7621_set_mac, + .fwd_config = mt7621_fwd_config, + .tx_dma = mt7621_tx_dma, + .switch_init = mtk_gsw_init, + .switch_config = mt7621_gsw_config, + .reg_table = mt7621_reg_table, + .pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS, + .rx_int = RT5350_RX_DONE_INT, + .tx_int = RT5350_TX_DONE_INT, + .status_int = (MT7621_FE_GDM1_AF | MT7621_FE_GDM2_AF), + .checksum_bit = MT7621_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,mt7621-eth", .data = &mt7621_data }, + {}, +}; + +MODULE_DEVICE_TABLE(of, of_fe_match); -- 1.7.10.4