ramips: remove legacy ethernet driver components for mt7621

The mt7621 subtarget has been switched to DSA quite a while ago and
seems to run sufficiently fine. Build with older kernels than 5.4 has
been disabled directly during the kernel bump, so our local ethernet
driver is unused in master since then.

Therefore, let's remove the mt7621-specific parts of "our" ethernet
driver, so we don't have to maintain them and it's obvious to
everybody that they are not used anymore.

This also drops the offloading components as this was specifically
implemented to depend on mt7621.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 187 deletions

diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7621.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7621.c
deleted file mode 100644
index 26a198fa2b..0000000000
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7621.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/*   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 "mtk_eth_soc.h"
-#include "gsw_mt7620.h"
-#include "mt7530.h"
-#include "mdio.h"
-
-#define MT7620A_CDMA_CSG_CFG	0x400
-#define MT7621_CDMP_IG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x00)
-#define MT7621_CDMP_EG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x04)
-#define MT7621_RESET_FE		BIT(6)
-#define MT7621_L4_VALID		BIT(24)
-
-#define MT7621_TX_DMA_UDF	BIT(19)
-#define MT7621_TX_DMA_FPORT	BIT(25)
-
-#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 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 &&  mdiobus_get_phy(priv->mii_bus, 0x1f))
-		mt7530_probe(priv->dev, NULL, priv->mii_bus, 1);
-
-	return 0;
-}
-
-static void mt7621_fe_reset(void)
-{
-	fe_reset(MT7621_RESET_FE);
-}
-
-static void mt7621_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 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 doesn't have txcsum config */
-	mt7621_rxcsum_config((dev->features & NETIF_F_RXCSUM));
-	mt7621_rxvlan_config(dev->features & NETIF_F_HW_VLAN_CTAG_RX);
-
-	return 0;
-}
-
-static void mt7621_tx_dma(struct fe_tx_dma *txd)
-{
-	txd->txd4 = MT7621_TX_DMA_FPORT;
-}
-
-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 | FE_FLAG_JUMBO_FRAME;
-
-	netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
-		NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
-		NETIF_F_SG | NETIF_F_TSO |
-		NETIF_F_TSO6 | NETIF_F_IPV6_CSUM |
-		NETIF_F_TSO_MANGLEID;
-}
-
-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);