Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3578 insertions, 0 deletions

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
new file mode 100644
index 0000000000..274ea16c0a
--- /dev/null
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -0,0 +1,3578 @@
+// SPDX-License-Identifier: GPL-2.0
+/*  SuperH Ethernet device driver
+ *
+ *  Copyright (C) 2014 Renesas Electronics Corporation
+ *  Copyright (C) 2006-2012 Nobuhiro Iwamatsu
+ *  Copyright (C) 2008-2014 Renesas Solutions Corp.
+ *  Copyright (C) 2013-2017 Cogent Embedded, Inc.
+ *  Copyright (C) 2014 Codethink Limited
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/netdevice.h>
+#include <linux/of.h>
+#include <linux/of_net.h>
+#include <linux/phy.h>
+#include <linux/cache.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/sh_eth.h>
+#include <linux/of_mdio.h>
+
+#include "sh_eth.h"
+
+#define SH_ETH_DEF_MSG_ENABLE \
+		(NETIF_MSG_LINK	| \
+		NETIF_MSG_TIMER	| \
+		NETIF_MSG_RX_ERR| \
+		NETIF_MSG_TX_ERR)
+
+#define SH_ETH_OFFSET_INVALID	((u16)~0)
+
+#define SH_ETH_OFFSET_DEFAULTS			\
+	[0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID
+
+/* use some intentionally tricky logic here to initialize the whole struct to
+ * 0xffff, but then override certain fields, requiring us to indicate that we
+ * "know" that there are overrides in this structure, and we'll need to disable
+ * that warning from W=1 builds. GCC has supported this option since 4.2.X, but
+ * the macros available to do this only define GCC 8.
+ */
+__diag_push();
+__diag_ignore(GCC, 8, "-Woverride-init",
+	      "logic to initialize all and then override some is OK");
+static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
+	SH_ETH_OFFSET_DEFAULTS,
+
+	[EDSR]		= 0x0000,
+	[EDMR]		= 0x0400,
+	[EDTRR]		= 0x0408,
+	[EDRRR]		= 0x0410,
+	[EESR]		= 0x0428,
+	[EESIPR]	= 0x0430,
+	[TDLAR]		= 0x0010,
+	[TDFAR]		= 0x0014,
+	[TDFXR]		= 0x0018,
+	[TDFFR]		= 0x001c,
+	[RDLAR]		= 0x0030,
+	[RDFAR]		= 0x0034,
+	[RDFXR]		= 0x0038,
+	[RDFFR]		= 0x003c,
+	[TRSCER]	= 0x0438,
+	[RMFCR]		= 0x0440,
+	[TFTR]		= 0x0448,
+	[FDR]		= 0x0450,
+	[RMCR]		= 0x0458,
+	[RPADIR]	= 0x0460,
+	[FCFTR]		= 0x0468,
+	[CSMR]		= 0x04E4,
+
+	[ECMR]		= 0x0500,
+	[ECSR]		= 0x0510,
+	[ECSIPR]	= 0x0518,
+	[PIR]		= 0x0520,
+	[PSR]		= 0x0528,
+	[PIPR]		= 0x052c,
+	[RFLR]		= 0x0508,
+	[APR]		= 0x0554,
+	[MPR]		= 0x0558,
+	[PFTCR]		= 0x055c,
+	[PFRCR]		= 0x0560,
+	[TPAUSER]	= 0x0564,
+	[GECMR]		= 0x05b0,
+	[BCULR]		= 0x05b4,
+	[MAHR]		= 0x05c0,
+	[MALR]		= 0x05c8,
+	[TROCR]		= 0x0700,
+	[CDCR]		= 0x0708,
+	[LCCR]		= 0x0710,
+	[CEFCR]		= 0x0740,
+	[FRECR]		= 0x0748,
+	[TSFRCR]	= 0x0750,
+	[TLFRCR]	= 0x0758,
+	[RFCR]		= 0x0760,
+	[CERCR]		= 0x0768,
+	[CEECR]		= 0x0770,
+	[MAFCR]		= 0x0778,
+	[RMII_MII]	= 0x0790,
+
+	[ARSTR]		= 0x0000,
+	[TSU_CTRST]	= 0x0004,
+	[TSU_FWEN0]	= 0x0010,
+	[TSU_FWEN1]	= 0x0014,
+	[TSU_FCM]	= 0x0018,
+	[TSU_BSYSL0]	= 0x0020,
+	[TSU_BSYSL1]	= 0x0024,
+	[TSU_PRISL0]	= 0x0028,
+	[TSU_PRISL1]	= 0x002c,
+	[TSU_FWSL0]	= 0x0030,
+	[TSU_FWSL1]	= 0x0034,
+	[TSU_FWSLC]	= 0x0038,
+	[TSU_QTAGM0]	= 0x0040,
+	[TSU_QTAGM1]	= 0x0044,
+	[TSU_FWSR]	= 0x0050,
+	[TSU_FWINMK]	= 0x0054,
+	[TSU_ADQT0]	= 0x0048,
+	[TSU_ADQT1]	= 0x004c,
+	[TSU_VTAG0]	= 0x0058,
+	[TSU_VTAG1]	= 0x005c,
+	[TSU_ADSBSY]	= 0x0060,
+	[TSU_TEN]	= 0x0064,
+	[TSU_POST1]	= 0x0070,
+	[TSU_POST2]	= 0x0074,
+	[TSU_POST3]	= 0x0078,
+	[TSU_POST4]	= 0x007c,
+	[TSU_ADRH0]	= 0x0100,
+
+	[TXNLCR0]	= 0x0080,
+	[TXALCR0]	= 0x0084,
+	[RXNLCR0]	= 0x0088,
+	[RXALCR0]	= 0x008c,
+	[FWNLCR0]	= 0x0090,
+	[FWALCR0]	= 0x0094,
+	[TXNLCR1]	= 0x00a0,
+	[TXALCR1]	= 0x00a4,
+	[RXNLCR1]	= 0x00a8,
+	[RXALCR1]	= 0x00ac,
+	[FWNLCR1]	= 0x00b0,
+	[FWALCR1]	= 0x00b4,
+};
+
+static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
+	SH_ETH_OFFSET_DEFAULTS,
+
+	[ECMR]		= 0x0300,
+	[RFLR]		= 0x0308,
+	[ECSR]		= 0x0310,
+	[ECSIPR]	= 0x0318,
+	[PIR]		= 0x0320,
+	[PSR]		= 0x0328,
+	[RDMLR]		= 0x0340,
+	[IPGR]		= 0x0350,
+	[APR]		= 0x0354,
+	[MPR]		= 0x0358,
+	[RFCF]		= 0x0360,
+	[TPAUSER]	= 0x0364,
+	[TPAUSECR]	= 0x0368,
+	[MAHR]		= 0x03c0,
+	[MALR]		= 0x03c8,
+	[TROCR]		= 0x03d0,
+	[CDCR]		= 0x03d4,
+	[LCCR]		= 0x03d8,
+	[CNDCR]		= 0x03dc,
+	[CEFCR]		= 0x03e4,
+	[FRECR]		= 0x03e8,
+	[TSFRCR]	= 0x03ec,
+	[TLFRCR]	= 0x03f0,
+	[RFCR]		= 0x03f4,
+	[MAFCR]		= 0x03f8,
+
+	[EDMR]		= 0x0200,
+	[EDTRR]		= 0x0208,
+	[EDRRR]		= 0x0210,
+	[TDLAR]		= 0x0218,
+	[RDLAR]		= 0x0220,
+	[EESR]		= 0x0228,
+	[EESIPR]	= 0x0230,
+	[TRSCER]	= 0x0238,
+	[RMFCR]		= 0x0240,
+	[TFTR]		= 0x0248,
+	[FDR]		= 0x0250,
+	[RMCR]		= 0x0258,
+	[TFUCR]		= 0x0264,
+	[RFOCR]		= 0x0268,
+	[RMIIMODE]      = 0x026c,
+	[FCFTR]		= 0x0270,
+	[TRIMD]		= 0x027c,
+};
+
+static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
+	SH_ETH_OFFSET_DEFAULTS,
+
+	[ECMR]		= 0x0100,
+	[RFLR]		= 0x0108,
+	[ECSR]		= 0x0110,
+	[ECSIPR]	= 0x0118,
+	[PIR]		= 0x0120,
+	[PSR]		= 0x0128,
+	[RDMLR]		= 0x0140,
+	[IPGR]		= 0x0150,
+	[APR]		= 0x0154,
+	[MPR]		= 0x0158,
+	[TPAUSER]	= 0x0164,
+	[RFCF]		= 0x0160,
+	[TPAUSECR]	= 0x0168,
+	[BCFRR]		= 0x016c,
+	[MAHR]		= 0x01c0,
+	[MALR]		= 0x01c8,
+	[TROCR]		= 0x01d0,
+	[CDCR]		= 0x01d4,
+	[LCCR]		= 0x01d8,
+	[CNDCR]		= 0x01dc,
+	[CEFCR]		= 0x01e4,
+	[FRECR]		= 0x01e8,
+	[TSFRCR]	= 0x01ec,
+	[TLFRCR]	= 0x01f0,
+	[RFCR]		= 0x01f4,
+	[MAFCR]		= 0x01f8,
+	[RTRATE]	= 0x01fc,
+
+	[EDMR]		= 0x0000,
+	[EDTRR]		= 0x0008,
+	[EDRRR]		= 0x0010,
+	[TDLAR]		= 0x0018,
+	[RDLAR]		= 0x0020,
+	[EESR]		= 0x0028,
+	[EESIPR]	= 0x0030,
+	[TRSCER]	= 0x0038,
+	[RMFCR]		= 0x0040,
+	[TFTR]		= 0x0048,
+	[FDR]		= 0x0050,
+	[RMCR]		= 0x0058,
+	[TFUCR]		= 0x0064,
+	[RFOCR]		= 0x0068,
+	[FCFTR]		= 0x0070,
+	[RPADIR]	= 0x0078,
+	[TRIMD]		= 0x007c,
+	[RBWAR]		= 0x00c8,
+	[RDFAR]		= 0x00cc,
+	[TBRAR]		= 0x00d4,
+	[TDFAR]		= 0x00d8,
+};
+
+static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = {
+	SH_ETH_OFFSET_DEFAULTS,
+
+	[EDMR]		= 0x0000,
+	[EDTRR]		= 0x0004,
+	[EDRRR]		= 0x0008,
+	[TDLAR]		= 0x000c,
+	[RDLAR]		= 0x0010,
+	[EESR]		= 0x0014,
+	[EESIPR]	= 0x0018,
+	[TRSCER]	= 0x001c,
+	[RMFCR]		= 0x0020,
+	[TFTR]		= 0x0024,
+	[FDR]		= 0x0028,
+	[RMCR]		= 0x002c,
+	[EDOCR]		= 0x0030,
+	[FCFTR]		= 0x0034,
+	[RPADIR]	= 0x0038,
+	[TRIMD]		= 0x003c,
+	[RBWAR]		= 0x0040,
+	[RDFAR]		= 0x0044,
+	[TBRAR]		= 0x004c,
+	[TDFAR]		= 0x0050,
+
+	[ECMR]		= 0x0160,
+	[ECSR]		= 0x0164,
+	[ECSIPR]	= 0x0168,
+	[PIR]		= 0x016c,
+	[MAHR]		= 0x0170,
+	[MALR]		= 0x0174,
+	[RFLR]		= 0x0178,
+	[PSR]		= 0x017c,
+	[TROCR]		= 0x0180,
+	[CDCR]		= 0x0184,
+	[LCCR]		= 0x0188,
+	[CNDCR]		= 0x018c,
+	[CEFCR]		= 0x0194,
+	[FRECR]		= 0x0198,
+	[TSFRCR]	= 0x019c,
+	[TLFRCR]	= 0x01a0,
+	[RFCR]		= 0x01a4,
+	[MAFCR]		= 0x01a8,
+	[IPGR]		= 0x01b4,
+	[APR]		= 0x01b8,
+	[MPR]		= 0x01bc,
+	[TPAUSER]	= 0x01c4,
+	[BCFR]		= 0x01cc,
+
+	[ARSTR]		= 0x0000,
+	[TSU_CTRST]	= 0x0004,
+	[TSU_FWEN0]	= 0x0010,
+	[TSU_FWEN1]	= 0x0014,
+	[TSU_FCM]	= 0x0018,
+	[TSU_BSYSL0]	= 0x0020,
+	[TSU_BSYSL1]	= 0x0024,
+	[TSU_PRISL0]	= 0x0028,
+	[TSU_PRISL1]	= 0x002c,
+	[TSU_FWSL0]	= 0x0030,
+	[TSU_FWSL1]	= 0x0034,
+	[TSU_FWSLC]	= 0x0038,
+	[TSU_QTAGM0]	= 0x0040,
+	[TSU_QTAGM1]	= 0x0044,
+	[TSU_ADQT0]	= 0x0048,
+	[TSU_ADQT1]	= 0x004c,
+	[TSU_FWSR]	= 0x0050,
+	[TSU_FWINMK]	= 0x0054,
+	[TSU_ADSBSY]	= 0x0060,
+	[TSU_TEN]	= 0x0064,
+	[TSU_POST1]	= 0x0070,
+	[TSU_POST2]	= 0x0074,
+	[TSU_POST3]	= 0x0078,
+	[TSU_POST4]	= 0x007c,
+
+	[TXNLCR0]	= 0x0080,
+	[TXALCR0]	= 0x0084,
+	[RXNLCR0]	= 0x0088,
+	[RXALCR0]	= 0x008c,
+	[FWNLCR0]	= 0x0090,
+	[FWALCR0]	= 0x0094,
+	[TXNLCR1]	= 0x00a0,
+	[TXALCR1]	= 0x00a4,
+	[RXNLCR1]	= 0x00a8,
+	[RXALCR1]	= 0x00ac,
+	[FWNLCR1]	= 0x00b0,
+	[FWALCR1]	= 0x00b4,
+
+	[TSU_ADRH0]	= 0x0100,
+};
+__diag_pop();
+
+static void sh_eth_rcv_snd_disable(struct net_device *ndev);
+static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev);
+
+static void sh_eth_write(struct net_device *ndev, u32 data, int enum_index)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 offset = mdp->reg_offset[enum_index];
+
+	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+		return;
+
+	iowrite32(data, mdp->addr + offset);
+}
+
+static u32 sh_eth_read(struct net_device *ndev, int enum_index)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 offset = mdp->reg_offset[enum_index];
+
+	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+		return ~0U;
+
+	return ioread32(mdp->addr + offset);
+}
+
+static void sh_eth_modify(struct net_device *ndev, int enum_index, u32 clear,
+			  u32 set)
+{
+	sh_eth_write(ndev, (sh_eth_read(ndev, enum_index) & ~clear) | set,
+		     enum_index);
+}
+
+static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index)
+{
+	return mdp->reg_offset[enum_index];
+}
+
+static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
+			     int enum_index)
+{
+	u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
+
+	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+		return;
+
+	iowrite32(data, mdp->tsu_addr + offset);
+}
+
+static u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
+{
+	u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
+
+	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+		return ~0U;
+
+	return ioread32(mdp->tsu_addr + offset);
+}
+
+static void sh_eth_soft_swap(char *src, int len)
+{
+#ifdef __LITTLE_ENDIAN
+	u32 *p = (u32 *)src;
+	u32 *maxp = p + DIV_ROUND_UP(len, sizeof(u32));
+
+	for (; p < maxp; p++)
+		*p = swab32(*p);
+#endif
+}
+
+static void sh_eth_select_mii(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 value;
+
+	switch (mdp->phy_interface) {
+	case PHY_INTERFACE_MODE_RGMII ... PHY_INTERFACE_MODE_RGMII_TXID:
+		value = 0x3;
+		break;
+	case PHY_INTERFACE_MODE_GMII:
+		value = 0x2;
+		break;
+	case PHY_INTERFACE_MODE_MII:
+		value = 0x1;
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		value = 0x0;
+		break;
+	default:
+		netdev_warn(ndev,
+			    "PHY interface mode was not setup. Set to MII.\n");
+		value = 0x1;
+		break;
+	}
+
+	sh_eth_write(ndev, value, RMII_MII);
+}
+
+static void sh_eth_set_duplex(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	sh_eth_modify(ndev, ECMR, ECMR_DM, mdp->duplex ? ECMR_DM : 0);
+}
+
+static void sh_eth_chip_reset(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	/* reset device */
+	sh_eth_tsu_write(mdp, ARSTR_ARST, ARSTR);
+	mdelay(1);
+}
+
+static int sh_eth_soft_reset(struct net_device *ndev)
+{
+	sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, EDMR_SRST_ETHER);
+	mdelay(3);
+	sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, 0);
+
+	return 0;
+}
+
+static int sh_eth_check_soft_reset(struct net_device *ndev)
+{
+	int cnt;
+
+	for (cnt = 100; cnt > 0; cnt--) {
+		if (!(sh_eth_read(ndev, EDMR) & EDMR_SRST_GETHER))
+			return 0;
+		mdelay(1);
+	}
+
+	netdev_err(ndev, "Device reset failed\n");
+	return -ETIMEDOUT;
+}
+
+static int sh_eth_soft_reset_gether(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	sh_eth_write(ndev, EDSR_ENALL, EDSR);
+	sh_eth_modify(ndev, EDMR, EDMR_SRST_GETHER, EDMR_SRST_GETHER);
+
+	ret = sh_eth_check_soft_reset(ndev);
+	if (ret)
+		return ret;
+
+	/* Table Init */
+	sh_eth_write(ndev, 0, TDLAR);
+	sh_eth_write(ndev, 0, TDFAR);
+	sh_eth_write(ndev, 0, TDFXR);
+	sh_eth_write(ndev, 0, TDFFR);
+	sh_eth_write(ndev, 0, RDLAR);
+	sh_eth_write(ndev, 0, RDFAR);
+	sh_eth_write(ndev, 0, RDFXR);
+	sh_eth_write(ndev, 0, RDFFR);
+
+	/* Reset HW CRC register */
+	if (mdp->cd->csmr)
+		sh_eth_write(ndev, 0, CSMR);
+
+	/* Select MII mode */
+	if (mdp->cd->select_mii)
+		sh_eth_select_mii(ndev);
+
+	return ret;
+}
+
+static void sh_eth_set_rate_gether(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	if (WARN_ON(!mdp->cd->gecmr))
+		return;
+
+	switch (mdp->speed) {
+	case 10: /* 10BASE */
+		sh_eth_write(ndev, GECMR_10, GECMR);
+		break;
+	case 100:/* 100BASE */
+		sh_eth_write(ndev, GECMR_100, GECMR);
+		break;
+	case 1000: /* 1000BASE */
+		sh_eth_write(ndev, GECMR_1000, GECMR);
+		break;
+	}
+}
+
+#ifdef CONFIG_OF
+/* R7S72100 */
+static struct sh_eth_cpu_data r7s72100_data = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.chip_reset	= sh_eth_chip_reset,
+	.set_duplex	= sh_eth_set_duplex,
+
+	.register_type	= SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_ICD,
+	.ecsipr_value	= ECSIPR_ICDIP,
+	.eesipr_value	= EESIPR_TWB1IP | EESIPR_TWBIP | EESIPR_TC1IP |
+			  EESIPR_TABTIP | EESIPR_RABTIP | EESIPR_RFCOFIP |
+			  EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP |
+			  EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_TC1 | EESR_FTC,
+	.eesr_err_check	= EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+			  EESR_TDE,
+	.fdr_value	= 0x0000070f,
+
+	.trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
+
+	.no_psr		= 1,
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.rpadir		= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.csmr		= 1,
+	.rx_csum	= 1,
+	.tsu		= 1,
+	.no_tx_cntrs	= 1,
+};
+
+static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
+{
+	sh_eth_chip_reset(ndev);
+
+	sh_eth_select_mii(ndev);
+}
+
+/* R8A7740 */
+static struct sh_eth_cpu_data r8a7740_data = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.chip_reset	= sh_eth_chip_reset_r8a7740,
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_gether,
+
+	.register_type	= SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+			  EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+			  EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_TC1 | EESR_FTC,
+	.eesr_err_check	= EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+			  EESR_TDE,
+	.fdr_value	= 0x0000070f,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.gecmr		= 1,
+	.bculr		= 1,
+	.hw_swap	= 1,
+	.rpadir		= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.csmr		= 1,
+	.rx_csum	= 1,
+	.tsu		= 1,
+	.select_mii	= 1,
+	.magic		= 1,
+	.cexcr		= 1,
+};
+
+/* There is CPU dependent code */
+static void sh_eth_set_rate_rcar(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	switch (mdp->speed) {
+	case 10: /* 10BASE */
+		sh_eth_modify(ndev, ECMR, ECMR_ELB, 0);
+		break;
+	case 100:/* 100BASE */
+		sh_eth_modify(ndev, ECMR, ECMR_ELB, ECMR_ELB);
+		break;
+	}
+}
+
+/* R-Car Gen1 */
+static struct sh_eth_cpu_data rcar_gen1_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_rcar,
+
+	.register_type	= SH_ETH_REG_FAST_RCAR,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.ecsr_value	= ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
+	.ecsipr_value	= ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP |
+			  EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+	.eesr_err_check	= EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+	.fdr_value	= 0x00000f0f,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.no_xdfar	= 1,
+};
+
+/* R-Car Gen2 and RZ/G1 */
+static struct sh_eth_cpu_data rcar_gen2_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_rcar,
+
+	.register_type	= SH_ETH_REG_FAST_RCAR,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.ecsr_value	= ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
+			  ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP |
+			  EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+	.eesr_err_check	= EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+	.fdr_value	= 0x00000f0f,
+
+	.trscer_err_mask = TRSCER_RMAFCE,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.no_xdfar	= 1,
+	.rmiimode	= 1,
+	.magic		= 1,
+};
+
+/* R8A77980 */
+static struct sh_eth_cpu_data r8a77980_data = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_gether,
+
+	.register_type  = SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
+			  ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP |
+			  EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check       = EESR_FTC | EESR_CD | EESR_TRO,
+	.eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RFE | EESR_RDE | EESR_RFRMER |
+			  EESR_TFE | EESR_TDE | EESR_ECI,
+	.fdr_value	= 0x0000070f,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.gecmr		= 1,
+	.bculr		= 1,
+	.hw_swap	= 1,
+	.nbst		= 1,
+	.rpadir		= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.csmr		= 1,
+	.rx_csum	= 1,
+	.select_mii	= 1,
+	.magic		= 1,
+	.cexcr		= 1,
+};
+
+/* R7S9210 */
+static struct sh_eth_cpu_data r7s9210_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_rcar,
+
+	.register_type	= SH_ETH_REG_FAST_SH4,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.ecsr_value	= ECSR_ICD,
+	.ecsipr_value	= ECSIPR_ICDIP,
+	.eesipr_value	= EESIPR_TWBIP | EESIPR_TABTIP | EESIPR_RABTIP |
+			  EESIPR_RFCOFIP | EESIPR_ECIIP | EESIPR_FTCIP |
+			  EESIPR_TDEIP | EESIPR_TFUFIP | EESIPR_FRIP |
+			  EESIPR_RDEIP | EESIPR_RFOFIP | EESIPR_CNDIP |
+			  EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP | EESIPR_RTLFIP |
+			  EESIPR_RTSFIP | EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+	.eesr_err_check	= EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+	.fdr_value	= 0x0000070f,
+
+	.trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.rpadir		= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+};
+#endif /* CONFIG_OF */
+
+static void sh_eth_set_rate_sh7724(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	switch (mdp->speed) {
+	case 10: /* 10BASE */
+		sh_eth_modify(ndev, ECMR, ECMR_RTM, 0);
+		break;
+	case 100:/* 100BASE */
+		sh_eth_modify(ndev, ECMR, ECMR_RTM, ECMR_RTM);
+		break;
+	}
+}
+
+/* SH7724 */
+static struct sh_eth_cpu_data sh7724_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_sh7724,
+
+	.register_type	= SH_ETH_REG_FAST_SH4,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.ecsr_value	= ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
+	.ecsipr_value	= ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_RMAFIP | EESIPR_RRFIP |
+			  EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+	.eesr_err_check	= EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.rpadir		= 1,
+};
+
+static void sh_eth_set_rate_sh7757(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	switch (mdp->speed) {
+	case 10: /* 10BASE */
+		sh_eth_write(ndev, 0, RTRATE);
+		break;
+	case 100:/* 100BASE */
+		sh_eth_write(ndev, 1, RTRATE);
+		break;
+	}
+}
+
+/* SH7757 */
+static struct sh_eth_cpu_data sh7757_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_sh7757,
+
+	.register_type	= SH_ETH_REG_FAST_SH4,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+			  EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+			  EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+	.eesr_err_check	= EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+	.irq_flags	= IRQF_SHARED,
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+	.no_ade		= 1,
+	.rpadir		= 1,
+	.rtrate		= 1,
+	.dual_port	= 1,
+};
+
+#define SH_GIGA_ETH_BASE	0xfee00000UL
+#define GIGA_MALR(port)		(SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
+#define GIGA_MAHR(port)		(SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
+static void sh_eth_chip_reset_giga(struct net_device *ndev)
+{
+	u32 mahr[2], malr[2];
+	int i;
+
+	/* save MAHR and MALR */
+	for (i = 0; i < 2; i++) {
+		malr[i] = ioread32((void *)GIGA_MALR(i));
+		mahr[i] = ioread32((void *)GIGA_MAHR(i));
+	}
+
+	sh_eth_chip_reset(ndev);
+
+	/* restore MAHR and MALR */
+	for (i = 0; i < 2; i++) {
+		iowrite32(malr[i], (void *)GIGA_MALR(i));
+		iowrite32(mahr[i], (void *)GIGA_MAHR(i));
+	}
+}
+
+static void sh_eth_set_rate_giga(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	if (WARN_ON(!mdp->cd->gecmr))
+		return;
+
+	switch (mdp->speed) {
+	case 10: /* 10BASE */
+		sh_eth_write(ndev, 0x00000000, GECMR);
+		break;
+	case 100:/* 100BASE */
+		sh_eth_write(ndev, 0x00000010, GECMR);
+		break;
+	case 1000: /* 1000BASE */
+		sh_eth_write(ndev, 0x00000020, GECMR);
+		break;
+	}
+}
+
+/* SH7757(GETHERC) */
+static struct sh_eth_cpu_data sh7757_data_giga = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.chip_reset	= sh_eth_chip_reset_giga,
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_giga,
+
+	.register_type	= SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+			  EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+			  EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_TC1 | EESR_FTC,
+	.eesr_err_check	= EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+			  EESR_TDE,
+	.fdr_value	= 0x0000072f,
+
+	.irq_flags	= IRQF_SHARED,
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.gecmr		= 1,
+	.bculr		= 1,
+	.hw_swap	= 1,
+	.rpadir		= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.tsu		= 1,
+	.cexcr		= 1,
+	.dual_port	= 1,
+};
+
+/* SH7734 */
+static struct sh_eth_cpu_data sh7734_data = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.chip_reset	= sh_eth_chip_reset,
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_gether,
+
+	.register_type	= SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+			  EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_TC1 | EESR_FTC,
+	.eesr_err_check	= EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+			  EESR_TDE,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.gecmr		= 1,
+	.bculr		= 1,
+	.hw_swap	= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.tsu		= 1,
+	.csmr		= 1,
+	.rx_csum	= 1,
+	.select_mii	= 1,
+	.magic		= 1,
+	.cexcr		= 1,
+};
+
+/* SH7763 */
+static struct sh_eth_cpu_data sh7763_data = {
+	.soft_reset	= sh_eth_soft_reset_gether,
+
+	.chip_reset	= sh_eth_chip_reset,
+	.set_duplex	= sh_eth_set_duplex,
+	.set_rate	= sh_eth_set_rate_gether,
+
+	.register_type	= SH_ETH_REG_GIGABIT,
+
+	.edtrr_trns	= EDTRR_TRNS_GETHER,
+	.ecsr_value	= ECSR_ICD | ECSR_MPD,
+	.ecsipr_value	= ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+			  EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.tx_check	= EESR_TC1 | EESR_FTC,
+	.eesr_err_check	= EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+			  EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.gecmr		= 1,
+	.bculr		= 1,
+	.hw_swap	= 1,
+	.no_trimd	= 1,
+	.no_ade		= 1,
+	.xdfar_rw	= 1,
+	.tsu		= 1,
+	.irq_flags	= IRQF_SHARED,
+	.magic		= 1,
+	.cexcr		= 1,
+	.rx_csum	= 1,
+	.dual_port	= 1,
+};
+
+static struct sh_eth_cpu_data sh7619_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.register_type	= SH_ETH_REG_FAST_SH3_SH2,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+			  EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+			  EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.apr		= 1,
+	.mpr		= 1,
+	.tpauser	= 1,
+	.hw_swap	= 1,
+};
+
+static struct sh_eth_cpu_data sh771x_data = {
+	.soft_reset	= sh_eth_soft_reset,
+
+	.register_type	= SH_ETH_REG_FAST_SH3_SH2,
+
+	.edtrr_trns	= EDTRR_TRNS_ETHER,
+	.eesipr_value	= EESIPR_RFCOFIP | EESIPR_ECIIP |
+			  EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+			  EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+			  0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+			  EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+			  EESIPR_CEEFIP | EESIPR_CELFIP |
+			  EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+			  EESIPR_PREIP | EESIPR_CERFIP,
+
+	.trscer_err_mask = TRSCER_RMAFCE,
+
+	.tsu		= 1,
+	.dual_port	= 1,
+};
+
+static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
+{
+	if (!cd->ecsr_value)
+		cd->ecsr_value = DEFAULT_ECSR_INIT;
+
+	if (!cd->ecsipr_value)
+		cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
+
+	if (!cd->fcftr_value)
+		cd->fcftr_value = DEFAULT_FIFO_F_D_RFF |
+				  DEFAULT_FIFO_F_D_RFD;
+
+	if (!cd->fdr_value)
+		cd->fdr_value = DEFAULT_FDR_INIT;
+
+	if (!cd->tx_check)
+		cd->tx_check = DEFAULT_TX_CHECK;
+
+	if (!cd->eesr_err_check)
+		cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
+
+	if (!cd->trscer_err_mask)
+		cd->trscer_err_mask = DEFAULT_TRSCER_ERR_MASK;
+}
+
+static void sh_eth_set_receive_align(struct sk_buff *skb)
+{
+	uintptr_t reserve = (uintptr_t)skb->data & (SH_ETH_RX_ALIGN - 1);
+
+	if (reserve)
+		skb_reserve(skb, SH_ETH_RX_ALIGN - reserve);
+}
+
+/* Program the hardware MAC address from dev->dev_addr. */
+static void update_mac_address(struct net_device *ndev)
+{
+	sh_eth_write(ndev,
+		     (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+		     (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+	sh_eth_write(ndev,
+		     (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+}
+
+/* Get MAC address from SuperH MAC address register
+ *
+ * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
+ * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
+ * When you want use this device, you must set MAC address in bootloader.
+ *
+ */
+static void read_mac_address(struct net_device *ndev, unsigned char *mac)
+{
+	if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
+		eth_hw_addr_set(ndev, mac);
+	} else {
+		u32 mahr = sh_eth_read(ndev, MAHR);
+		u32 malr = sh_eth_read(ndev, MALR);
+		u8 addr[ETH_ALEN];
+
+		addr[0] = (mahr >> 24) & 0xFF;
+		addr[1] = (mahr >> 16) & 0xFF;
+		addr[2] = (mahr >>  8) & 0xFF;
+		addr[3] = (mahr >>  0) & 0xFF;
+		addr[4] = (malr >>  8) & 0xFF;
+		addr[5] = (malr >>  0) & 0xFF;
+		eth_hw_addr_set(ndev, addr);
+	}
+}
+
+struct bb_info {
+	void (*set_gate)(void *addr);
+	struct mdiobb_ctrl ctrl;
+	void *addr;
+};
+
+static void sh_mdio_ctrl(struct mdiobb_ctrl *ctrl, u32 mask, int set)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+	u32 pir;
+
+	if (bitbang->set_gate)
+		bitbang->set_gate(bitbang->addr);
+
+	pir = ioread32(bitbang->addr);
+	if (set)
+		pir |=  mask;
+	else
+		pir &= ~mask;
+	iowrite32(pir, bitbang->addr);
+}
+
+/* Data I/O pin control */
+static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+	sh_mdio_ctrl(ctrl, PIR_MMD, bit);
+}
+
+/* Set bit data*/
+static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
+{
+	sh_mdio_ctrl(ctrl, PIR_MDO, bit);
+}
+
+/* Get bit data*/
+static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
+{
+	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+	if (bitbang->set_gate)
+		bitbang->set_gate(bitbang->addr);
+
+	return (ioread32(bitbang->addr) & PIR_MDI) != 0;
+}
+
+/* MDC pin control */
+static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+	sh_mdio_ctrl(ctrl, PIR_MDC, bit);
+}
+
+/* mdio bus control struct */
+static const struct mdiobb_ops bb_ops = {
+	.owner = THIS_MODULE,
+	.set_mdc = sh_mdc_ctrl,
+	.set_mdio_dir = sh_mmd_ctrl,
+	.set_mdio_data = sh_set_mdio,
+	.get_mdio_data = sh_get_mdio,
+};
+
+/* free Tx skb function */
+static int sh_eth_tx_free(struct net_device *ndev, bool sent_only)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_txdesc *txdesc;
+	int free_num = 0;
+	int entry;
+	bool sent;
+
+	for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
+		entry = mdp->dirty_tx % mdp->num_tx_ring;
+		txdesc = &mdp->tx_ring[entry];
+		sent = !(txdesc->status & cpu_to_le32(TD_TACT));
+		if (sent_only && !sent)
+			break;
+		/* TACT bit must be checked before all the following reads */
+		dma_rmb();
+		netif_info(mdp, tx_done, ndev,
+			   "tx entry %d status 0x%08x\n",
+			   entry, le32_to_cpu(txdesc->status));
+		/* Free the original skb. */
+		if (mdp->tx_skbuff[entry]) {
+			dma_unmap_single(&mdp->pdev->dev,
+					 le32_to_cpu(txdesc->addr),
+					 le32_to_cpu(txdesc->len) >> 16,
+					 DMA_TO_DEVICE);
+			dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
+			mdp->tx_skbuff[entry] = NULL;
+			free_num++;
+		}
+		txdesc->status = cpu_to_le32(TD_TFP);
+		if (entry >= mdp->num_tx_ring - 1)
+			txdesc->status |= cpu_to_le32(TD_TDLE);
+
+		if (sent) {
+			ndev->stats.tx_packets++;
+			ndev->stats.tx_bytes += le32_to_cpu(txdesc->len) >> 16;
+		}
+	}
+	return free_num;
+}
+
+/* free skb and descriptor buffer */
+static void sh_eth_ring_free(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ringsize, i;
+
+	if (mdp->rx_ring) {
+		for (i = 0; i < mdp->num_rx_ring; i++) {
+			if (mdp->rx_skbuff[i]) {
+				struct sh_eth_rxdesc *rxdesc = &mdp->rx_ring[i];
+
+				dma_unmap_single(&mdp->pdev->dev,
+						 le32_to_cpu(rxdesc->addr),
+						 ALIGN(mdp->rx_buf_sz, 32),
+						 DMA_FROM_DEVICE);
+			}
+		}
+		ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
+		dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->rx_ring,
+				  mdp->rx_desc_dma);
+		mdp->rx_ring = NULL;
+	}
+
+	/* Free Rx skb ringbuffer */
+	if (mdp->rx_skbuff) {
+		for (i = 0; i < mdp->num_rx_ring; i++)
+			dev_kfree_skb(mdp->rx_skbuff[i]);
+	}
+	kfree(mdp->rx_skbuff);
+	mdp->rx_skbuff = NULL;
+
+	if (mdp->tx_ring) {
+		sh_eth_tx_free(ndev, false);
+
+		ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
+		dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->tx_ring,
+				  mdp->tx_desc_dma);
+		mdp->tx_ring = NULL;
+	}
+
+	/* Free Tx skb ringbuffer */
+	kfree(mdp->tx_skbuff);
+	mdp->tx_skbuff = NULL;
+}
+
+/* format skb and descriptor buffer */
+static void sh_eth_ring_format(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int i;
+	struct sk_buff *skb;
+	struct sh_eth_rxdesc *rxdesc = NULL;
+	struct sh_eth_txdesc *txdesc = NULL;
+	int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring;
+	int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring;
+	int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
+	dma_addr_t dma_addr;
+	u32 buf_len;
+
+	mdp->cur_rx = 0;
+	mdp->cur_tx = 0;
+	mdp->dirty_rx = 0;
+	mdp->dirty_tx = 0;
+
+	memset(mdp->rx_ring, 0, rx_ringsize);
+
+	/* build Rx ring buffer */
+	for (i = 0; i < mdp->num_rx_ring; i++) {
+		/* skb */
+		mdp->rx_skbuff[i] = NULL;
+		skb = netdev_alloc_skb(ndev, skbuff_size);
+		if (skb == NULL)
+			break;
+		sh_eth_set_receive_align(skb);
+
+		/* The size of the buffer is a multiple of 32 bytes. */
+		buf_len = ALIGN(mdp->rx_buf_sz, 32);
+		dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, buf_len,
+					  DMA_FROM_DEVICE);
+		if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+			kfree_skb(skb);
+			break;
+		}
+		mdp->rx_skbuff[i] = skb;
+
+		/* RX descriptor */
+		rxdesc = &mdp->rx_ring[i];
+		rxdesc->len = cpu_to_le32(buf_len << 16);
+		rxdesc->addr = cpu_to_le32(dma_addr);
+		rxdesc->status = cpu_to_le32(RD_RACT | RD_RFP);
+
+		/* Rx descriptor address set */
+		if (i == 0) {
+			sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
+			if (mdp->cd->xdfar_rw)
+				sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
+		}
+	}
+
+	mdp->dirty_rx = (u32) (i - mdp->num_rx_ring);
+
+	/* Mark the last entry as wrapping the ring. */
+	if (rxdesc)
+		rxdesc->status |= cpu_to_le32(RD_RDLE);
+
+	memset(mdp->tx_ring, 0, tx_ringsize);
+
+	/* build Tx ring buffer */
+	for (i = 0; i < mdp->num_tx_ring; i++) {
+		mdp->tx_skbuff[i] = NULL;
+		txdesc = &mdp->tx_ring[i];
+		txdesc->status = cpu_to_le32(TD_TFP);
+		txdesc->len = cpu_to_le32(0);
+		if (i == 0) {
+			/* Tx descriptor address set */
+			sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
+			if (mdp->cd->xdfar_rw)
+				sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
+		}
+	}
+
+	txdesc->status |= cpu_to_le32(TD_TDLE);
+}
+
+/* Get skb and descriptor buffer */
+static int sh_eth_ring_init(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int rx_ringsize, tx_ringsize;
+
+	/* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
+	 * card needs room to do 8 byte alignment, +2 so we can reserve
+	 * the first 2 bytes, and +16 gets room for the status word from the
+	 * card.
+	 */
+	mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
+			  (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
+	if (mdp->cd->rpadir)
+		mdp->rx_buf_sz += NET_IP_ALIGN;
+
+	/* Allocate RX and TX skb rings */
+	mdp->rx_skbuff = kcalloc(mdp->num_rx_ring, sizeof(*mdp->rx_skbuff),
+				 GFP_KERNEL);
+	if (!mdp->rx_skbuff)
+		return -ENOMEM;
+
+	mdp->tx_skbuff = kcalloc(mdp->num_tx_ring, sizeof(*mdp->tx_skbuff),
+				 GFP_KERNEL);
+	if (!mdp->tx_skbuff)
+		goto ring_free;
+
+	/* Allocate all Rx descriptors. */
+	rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
+	mdp->rx_ring = dma_alloc_coherent(&mdp->pdev->dev, rx_ringsize,
+					  &mdp->rx_desc_dma, GFP_KERNEL);
+	if (!mdp->rx_ring)
+		goto ring_free;
+
+	mdp->dirty_rx = 0;
+
+	/* Allocate all Tx descriptors. */
+	tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
+	mdp->tx_ring = dma_alloc_coherent(&mdp->pdev->dev, tx_ringsize,
+					  &mdp->tx_desc_dma, GFP_KERNEL);
+	if (!mdp->tx_ring)
+		goto ring_free;
+	return 0;
+
+ring_free:
+	/* Free Rx and Tx skb ring buffer and DMA buffer */
+	sh_eth_ring_free(ndev);
+
+	return -ENOMEM;
+}
+
+static int sh_eth_dev_init(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	/* Soft Reset */
+	ret = mdp->cd->soft_reset(ndev);
+	if (ret)
+		return ret;
+
+	if (mdp->cd->rmiimode)
+		sh_eth_write(ndev, 0x1, RMIIMODE);
+
+	/* Descriptor format */
+	sh_eth_ring_format(ndev);
+	if (mdp->cd->rpadir)
+		sh_eth_write(ndev, NET_IP_ALIGN << 16, RPADIR);
+
+	/* all sh_eth int mask */
+	sh_eth_write(ndev, 0, EESIPR);
+
+#if defined(__LITTLE_ENDIAN)
+	if (mdp->cd->hw_swap)
+		sh_eth_write(ndev, EDMR_EL, EDMR);
+	else
+#endif
+		sh_eth_write(ndev, 0, EDMR);
+
+	/* FIFO size set */
+	sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
+	sh_eth_write(ndev, 0, TFTR);
+
+	/* Frame recv control (enable multiple-packets per rx irq) */
+	sh_eth_write(ndev, RMCR_RNC, RMCR);
+
+	sh_eth_write(ndev, mdp->cd->trscer_err_mask, TRSCER);
+
+	/* DMA transfer burst mode */
+	if (mdp->cd->nbst)
+		sh_eth_modify(ndev, EDMR, EDMR_NBST, EDMR_NBST);
+
+	/* Burst cycle count upper-limit */
+	if (mdp->cd->bculr)
+		sh_eth_write(ndev, 0x800, BCULR);
+
+	sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
+
+	if (!mdp->cd->no_trimd)
+		sh_eth_write(ndev, 0, TRIMD);
+
+	/* Recv frame limit set register */
+	sh_eth_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN,
+		     RFLR);
+
+	sh_eth_modify(ndev, EESR, 0, 0);
+	mdp->irq_enabled = true;
+	sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+
+	/* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
+	sh_eth_write(ndev, ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) |
+		     (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
+		     ECMR_TE | ECMR_RE, ECMR);
+
+	if (mdp->cd->set_rate)
+		mdp->cd->set_rate(ndev);
+
+	/* E-MAC Status Register clear */
+	sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
+
+	/* E-MAC Interrupt Enable register */
+	sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
+
+	/* Set MAC address */
+	update_mac_address(ndev);
+
+	/* mask reset */
+	if (mdp->cd->apr)
+		sh_eth_write(ndev, 1, APR);
+	if (mdp->cd->mpr)
+		sh_eth_write(ndev, 1, MPR);
+	if (mdp->cd->tpauser)
+		sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
+
+	/* Setting the Rx mode will start the Rx process. */
+	sh_eth_write(ndev, EDRRR_R, EDRRR);
+
+	return ret;
+}
+
+static void sh_eth_dev_exit(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int i;
+
+	/* Deactivate all TX descriptors, so DMA should stop at next
+	 * packet boundary if it's currently running
+	 */
+	for (i = 0; i < mdp->num_tx_ring; i++)
+		mdp->tx_ring[i].status &= ~cpu_to_le32(TD_TACT);
+
+	/* Disable TX FIFO egress to MAC */
+	sh_eth_rcv_snd_disable(ndev);
+
+	/* Stop RX DMA at next packet boundary */
+	sh_eth_write(ndev, 0, EDRRR);
+
+	/* Aside from TX DMA, we can't tell when the hardware is
+	 * really stopped, so we need to reset to make sure.
+	 * Before doing that, wait for long enough to *probably*
+	 * finish transmitting the last packet and poll stats.
+	 */
+	msleep(2); /* max frame time at 10 Mbps < 1250 us */
+	sh_eth_get_stats(ndev);
+	mdp->cd->soft_reset(ndev);
+
+	/* Set the RMII mode again if required */
+	if (mdp->cd->rmiimode)
+		sh_eth_write(ndev, 0x1, RMIIMODE);
+
+	/* Set MAC address again */
+	update_mac_address(ndev);
+}
+
+static void sh_eth_rx_csum(struct sk_buff *skb)
+{
+	u8 *hw_csum;
+
+	/* The hardware checksum is 2 bytes appended to packet data */
+	if (unlikely(skb->len < sizeof(__sum16)))
+		return;
+	hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
+	skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+	skb->ip_summed = CHECKSUM_COMPLETE;
+	skb_trim(skb, skb->len - sizeof(__sum16));
+}
+
+/* Packet receive function */
+static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_rxdesc *rxdesc;
+
+	int entry = mdp->cur_rx % mdp->num_rx_ring;
+	int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx;
+	int limit;
+	struct sk_buff *skb;
+	u32 desc_status;
+	int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
+	dma_addr_t dma_addr;
+	u16 pkt_len;
+	u32 buf_len;
+
+	boguscnt = min(boguscnt, *quota);
+	limit = boguscnt;
+	rxdesc = &mdp->rx_ring[entry];
+	while (!(rxdesc->status & cpu_to_le32(RD_RACT))) {
+		/* RACT bit must be checked before all the following reads */
+		dma_rmb();
+		desc_status = le32_to_cpu(rxdesc->status);
+		pkt_len = le32_to_cpu(rxdesc->len) & RD_RFL;
+
+		if (--boguscnt < 0)
+			break;
+
+		netif_info(mdp, rx_status, ndev,
+			   "rx entry %d status 0x%08x len %d\n",
+			   entry, desc_status, pkt_len);
+
+		if (!(desc_status & RDFEND))
+			ndev->stats.rx_length_errors++;
+
+		/* In case of almost all GETHER/ETHERs, the Receive Frame State
+		 * (RFS) bits in the Receive Descriptor 0 are from bit 9 to
+		 * bit 0. However, in case of the R8A7740 and R7S72100
+		 * the RFS bits are from bit 25 to bit 16. So, the
+		 * driver needs right shifting by 16.
+		 */
+		if (mdp->cd->csmr)
+			desc_status >>= 16;
+
+		skb = mdp->rx_skbuff[entry];
+		if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
+				   RD_RFS5 | RD_RFS6 | RD_RFS10)) {
+			ndev->stats.rx_errors++;
+			if (desc_status & RD_RFS1)
+				ndev->stats.rx_crc_errors++;
+			if (desc_status & RD_RFS2)
+				ndev->stats.rx_frame_errors++;
+			if (desc_status & RD_RFS3)
+				ndev->stats.rx_length_errors++;
+			if (desc_status & RD_RFS4)
+				ndev->stats.rx_length_errors++;
+			if (desc_status & RD_RFS6)
+				ndev->stats.rx_missed_errors++;
+			if (desc_status & RD_RFS10)
+				ndev->stats.rx_over_errors++;
+		} else	if (skb) {
+			dma_addr = le32_to_cpu(rxdesc->addr);
+			if (!mdp->cd->hw_swap)
+				sh_eth_soft_swap(
+					phys_to_virt(ALIGN(dma_addr, 4)),
+					pkt_len + 2);
+			mdp->rx_skbuff[entry] = NULL;
+			if (mdp->cd->rpadir)
+				skb_reserve(skb, NET_IP_ALIGN);
+			dma_unmap_single(&mdp->pdev->dev, dma_addr,
+					 ALIGN(mdp->rx_buf_sz, 32),
+					 DMA_FROM_DEVICE);
+			skb_put(skb, pkt_len);
+			skb->protocol = eth_type_trans(skb, ndev);
+			if (ndev->features & NETIF_F_RXCSUM)
+				sh_eth_rx_csum(skb);
+			netif_receive_skb(skb);
+			ndev->stats.rx_packets++;
+			ndev->stats.rx_bytes += pkt_len;
+			if (desc_status & RD_RFS8)
+				ndev->stats.multicast++;
+		}
+		entry = (++mdp->cur_rx) % mdp->num_rx_ring;
+		rxdesc = &mdp->rx_ring[entry];
+	}
+
+	/* Refill the Rx ring buffers. */
+	for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
+		entry = mdp->dirty_rx % mdp->num_rx_ring;
+		rxdesc = &mdp->rx_ring[entry];
+		/* The size of the buffer is 32 byte boundary. */
+		buf_len = ALIGN(mdp->rx_buf_sz, 32);
+		rxdesc->len = cpu_to_le32(buf_len << 16);
+
+		if (mdp->rx_skbuff[entry] == NULL) {
+			skb = netdev_alloc_skb(ndev, skbuff_size);
+			if (skb == NULL)
+				break;	/* Better luck next round. */
+			sh_eth_set_receive_align(skb);
+			dma_addr = dma_map_single(&mdp->pdev->dev, skb->data,
+						  buf_len, DMA_FROM_DEVICE);
+			if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+				kfree_skb(skb);
+				break;
+			}
+			mdp->rx_skbuff[entry] = skb;
+
+			skb_checksum_none_assert(skb);
+			rxdesc->addr = cpu_to_le32(dma_addr);
+		}
+		dma_wmb(); /* RACT bit must be set after all the above writes */
+		if (entry >= mdp->num_rx_ring - 1)
+			rxdesc->status |=
+				cpu_to_le32(RD_RACT | RD_RFP | RD_RDLE);
+		else
+			rxdesc->status |= cpu_to_le32(RD_RACT | RD_RFP);
+	}
+
+	/* Restart Rx engine if stopped. */
+	/* If we don't need to check status, don't. -KDU */
+	if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) {
+		/* fix the values for the next receiving if RDE is set */
+		if (intr_status & EESR_RDE && !mdp->cd->no_xdfar) {
+			u32 count = (sh_eth_read(ndev, RDFAR) -
+				     sh_eth_read(ndev, RDLAR)) >> 4;
+
+			mdp->cur_rx = count;
+			mdp->dirty_rx = count;
+		}
+		sh_eth_write(ndev, EDRRR_R, EDRRR);
+	}
+
+	*quota -= limit - boguscnt - 1;
+
+	return *quota <= 0;
+}
+
+static void sh_eth_rcv_snd_disable(struct net_device *ndev)
+{
+	/* disable tx and rx */
+	sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, 0);
+}
+
+static void sh_eth_rcv_snd_enable(struct net_device *ndev)
+{
+	/* enable tx and rx */
+	sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, ECMR_RE | ECMR_TE);
+}
+
+/* E-MAC interrupt handler */
+static void sh_eth_emac_interrupt(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 felic_stat;
+	u32 link_stat;
+
+	felic_stat = sh_eth_read(ndev, ECSR) & sh_eth_read(ndev, ECSIPR);
+	sh_eth_write(ndev, felic_stat, ECSR);	/* clear int */
+	if (felic_stat & ECSR_ICD)
+		ndev->stats.tx_carrier_errors++;
+	if (felic_stat & ECSR_MPD)
+		pm_wakeup_event(&mdp->pdev->dev, 0);
+	if (felic_stat & ECSR_LCHNG) {
+		/* Link Changed */
+		if (mdp->cd->no_psr || mdp->no_ether_link)
+			return;
+		link_stat = sh_eth_read(ndev, PSR);
+		if (mdp->ether_link_active_low)
+			link_stat = ~link_stat;
+		if (!(link_stat & PSR_LMON)) {
+			sh_eth_rcv_snd_disable(ndev);
+		} else {
+			/* Link Up */
+			sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, 0);
+			/* clear int */
+			sh_eth_modify(ndev, ECSR, 0, 0);
+			sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, EESIPR_ECIIP);
+			/* enable tx and rx */
+			sh_eth_rcv_snd_enable(ndev);
+		}
+	}
+}
+
+/* error control function */
+static void sh_eth_error(struct net_device *ndev, u32 intr_status)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 mask;
+
+	if (intr_status & EESR_TWB) {
+		/* Unused write back interrupt */
+		if (intr_status & EESR_TABT) {	/* Transmit Abort int */
+			ndev->stats.tx_aborted_errors++;
+			netif_err(mdp, tx_err, ndev, "Transmit Abort\n");
+		}
+	}
+
+	if (intr_status & EESR_RABT) {
+		/* Receive Abort int */
+		if (intr_status & EESR_RFRMER) {
+			/* Receive Frame Overflow int */
+			ndev->stats.rx_frame_errors++;
+		}
+	}
+
+	if (intr_status & EESR_TDE) {
+		/* Transmit Descriptor Empty int */
+		ndev->stats.tx_fifo_errors++;
+		netif_err(mdp, tx_err, ndev, "Transmit Descriptor Empty\n");
+	}
+
+	if (intr_status & EESR_TFE) {
+		/* FIFO under flow */
+		ndev->stats.tx_fifo_errors++;
+		netif_err(mdp, tx_err, ndev, "Transmit FIFO Under flow\n");
+	}
+
+	if (intr_status & EESR_RDE) {
+		/* Receive Descriptor Empty int */
+		ndev->stats.rx_over_errors++;
+	}
+
+	if (intr_status & EESR_RFE) {
+		/* Receive FIFO Overflow int */
+		ndev->stats.rx_fifo_errors++;
+	}
+
+	if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
+		/* Address Error */
+		ndev->stats.tx_fifo_errors++;
+		netif_err(mdp, tx_err, ndev, "Address Error\n");
+	}
+
+	mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
+	if (mdp->cd->no_ade)
+		mask &= ~EESR_ADE;
+	if (intr_status & mask) {
+		/* Tx error */
+		u32 edtrr = sh_eth_read(ndev, EDTRR);
+
+		/* dmesg */
+		netdev_err(ndev, "TX error. status=%8.8x cur_tx=%8.8x dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
+			   intr_status, mdp->cur_tx, mdp->dirty_tx,
+			   (u32)ndev->state, edtrr);
+		/* dirty buffer free */
+		sh_eth_tx_free(ndev, true);
+
+		/* SH7712 BUG */
+		if (edtrr ^ mdp->cd->edtrr_trns) {
+			/* tx dma start */
+			sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
+		}
+		/* wakeup */
+		netif_wake_queue(ndev);
+	}
+}
+
+static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
+{
+	struct net_device *ndev = netdev;
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_cpu_data *cd = mdp->cd;
+	irqreturn_t ret = IRQ_NONE;
+	u32 intr_status, intr_enable;
+
+	spin_lock(&mdp->lock);
+
+	/* Get interrupt status */
+	intr_status = sh_eth_read(ndev, EESR);
+	/* Mask it with the interrupt mask, forcing ECI interrupt  to be always
+	 * enabled since it's the one that  comes  thru regardless of the mask,
+	 * and  we need to fully handle it  in sh_eth_emac_interrupt() in order
+	 * to quench it as it doesn't get cleared by just writing 1 to the  ECI
+	 * bit...
+	 */
+	intr_enable = sh_eth_read(ndev, EESIPR);
+	intr_status &= intr_enable | EESIPR_ECIIP;
+	if (intr_status & (EESR_RX_CHECK | cd->tx_check | EESR_ECI |
+			   cd->eesr_err_check))
+		ret = IRQ_HANDLED;
+	else
+		goto out;
+
+	if (unlikely(!mdp->irq_enabled)) {
+		sh_eth_write(ndev, 0, EESIPR);
+		goto out;
+	}
+
+	if (intr_status & EESR_RX_CHECK) {
+		if (napi_schedule_prep(&mdp->napi)) {
+			/* Mask Rx interrupts */
+			sh_eth_write(ndev, intr_enable & ~EESR_RX_CHECK,
+				     EESIPR);
+			__napi_schedule(&mdp->napi);
+		} else {
+			netdev_warn(ndev,
+				    "ignoring interrupt, status 0x%08x, mask 0x%08x.\n",
+				    intr_status, intr_enable);
+		}
+	}
+
+	/* Tx Check */
+	if (intr_status & cd->tx_check) {
+		/* Clear Tx interrupts */
+		sh_eth_write(ndev, intr_status & cd->tx_check, EESR);
+
+		sh_eth_tx_free(ndev, true);
+		netif_wake_queue(ndev);
+	}
+
+	/* E-MAC interrupt */
+	if (intr_status & EESR_ECI)
+		sh_eth_emac_interrupt(ndev);
+
+	if (intr_status & cd->eesr_err_check) {
+		/* Clear error interrupts */
+		sh_eth_write(ndev, intr_status & cd->eesr_err_check, EESR);
+
+		sh_eth_error(ndev, intr_status);
+	}
+
+out:
+	spin_unlock(&mdp->lock);
+
+	return ret;
+}
+
+static int sh_eth_poll(struct napi_struct *napi, int budget)
+{
+	struct sh_eth_private *mdp = container_of(napi, struct sh_eth_private,
+						  napi);
+	struct net_device *ndev = napi->dev;
+	int quota = budget;
+	u32 intr_status;
+
+	for (;;) {
+		intr_status = sh_eth_read(ndev, EESR);
+		if (!(intr_status & EESR_RX_CHECK))
+			break;
+		/* Clear Rx interrupts */
+		sh_eth_write(ndev, intr_status & EESR_RX_CHECK, EESR);
+
+		if (sh_eth_rx(ndev, intr_status, &quota))
+			goto out;
+	}
+
+	napi_complete(napi);
+
+	/* Reenable Rx interrupts */
+	if (mdp->irq_enabled)
+		sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+out:
+	return budget - quota;
+}
+
+/* PHY state control function */
+static void sh_eth_adjust_link(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct phy_device *phydev = ndev->phydev;
+	unsigned long flags;
+	int new_state = 0;
+
+	spin_lock_irqsave(&mdp->lock, flags);
+
+	/* Disable TX and RX right over here, if E-MAC change is ignored */
+	if (mdp->cd->no_psr || mdp->no_ether_link)
+		sh_eth_rcv_snd_disable(ndev);
+
+	if (phydev->link) {
+		if (phydev->duplex != mdp->duplex) {
+			new_state = 1;
+			mdp->duplex = phydev->duplex;
+			if (mdp->cd->set_duplex)
+				mdp->cd->set_duplex(ndev);
+		}
+
+		if (phydev->speed != mdp->speed) {
+			new_state = 1;
+			mdp->speed = phydev->speed;
+			if (mdp->cd->set_rate)
+				mdp->cd->set_rate(ndev);
+		}
+		if (!mdp->link) {
+			sh_eth_modify(ndev, ECMR, ECMR_TXF, 0);
+			new_state = 1;
+			mdp->link = phydev->link;
+		}
+	} else if (mdp->link) {
+		new_state = 1;
+		mdp->link = 0;
+		mdp->speed = 0;
+		mdp->duplex = -1;
+	}
+
+	/* Enable TX and RX right over here, if E-MAC change is ignored */
+	if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
+		sh_eth_rcv_snd_enable(ndev);
+
+	spin_unlock_irqrestore(&mdp->lock, flags);
+
+	if (new_state && netif_msg_link(mdp))
+		phy_print_status(phydev);
+}
+
+/* PHY init function */
+static int sh_eth_phy_init(struct net_device *ndev)
+{
+	struct device_node *np = ndev->dev.parent->of_node;
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct phy_device *phydev;
+
+	mdp->link = 0;
+	mdp->speed = 0;
+	mdp->duplex = -1;
+
+	/* Try connect to PHY */
+	if (np) {
+		struct device_node *pn;
+
+		pn = of_parse_phandle(np, "phy-handle", 0);
+		phydev = of_phy_connect(ndev, pn,
+					sh_eth_adjust_link, 0,
+					mdp->phy_interface);
+
+		of_node_put(pn);
+		if (!phydev)
+			phydev = ERR_PTR(-ENOENT);
+	} else {
+		char phy_id[MII_BUS_ID_SIZE + 3];
+
+		snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+			 mdp->mii_bus->id, mdp->phy_id);
+
+		phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
+				     mdp->phy_interface);
+	}
+
+	if (IS_ERR(phydev)) {
+		netdev_err(ndev, "failed to connect PHY\n");
+		return PTR_ERR(phydev);
+	}
+
+	/* mask with MAC supported features */
+	if (mdp->cd->register_type != SH_ETH_REG_GIGABIT)
+		phy_set_max_speed(phydev, SPEED_100);
+
+	phy_attached_info(phydev);
+
+	return 0;
+}
+
+/* PHY control start function */
+static int sh_eth_phy_start(struct net_device *ndev)
+{
+	int ret;
+
+	ret = sh_eth_phy_init(ndev);
+	if (ret)
+		return ret;
+
+	phy_start(ndev->phydev);
+
+	return 0;
+}
+
+/* If it is ever necessary to increase SH_ETH_REG_DUMP_MAX_REGS, the
+ * version must be bumped as well.  Just adding registers up to that
+ * limit is fine, as long as the existing register indices don't
+ * change.
+ */
+#define SH_ETH_REG_DUMP_VERSION		1
+#define SH_ETH_REG_DUMP_MAX_REGS	256
+
+static size_t __sh_eth_get_regs(struct net_device *ndev, u32 *buf)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_cpu_data *cd = mdp->cd;
+	u32 *valid_map;
+	size_t len;
+
+	BUILD_BUG_ON(SH_ETH_MAX_REGISTER_OFFSET > SH_ETH_REG_DUMP_MAX_REGS);
+
+	/* Dump starts with a bitmap that tells ethtool which
+	 * registers are defined for this chip.
+	 */
+	len = DIV_ROUND_UP(SH_ETH_REG_DUMP_MAX_REGS, 32);
+	if (buf) {
+		valid_map = buf;
+		buf += len;
+	} else {
+		valid_map = NULL;
+	}
+
+	/* Add a register to the dump, if it has a defined offset.
+	 * This automatically skips most undefined registers, but for
+	 * some it is also necessary to check a capability flag in
+	 * struct sh_eth_cpu_data.
+	 */
+#define mark_reg_valid(reg) valid_map[reg / 32] |= 1U << (reg % 32)
+#define add_reg_from(reg, read_expr) do {				\
+		if (mdp->reg_offset[reg] != SH_ETH_OFFSET_INVALID) {	\
+			if (buf) {					\
+				mark_reg_valid(reg);			\
+				*buf++ = read_expr;			\
+			}						\
+			++len;						\
+		}							\
+	} while (0)
+#define add_reg(reg) add_reg_from(reg, sh_eth_read(ndev, reg))
+#define add_tsu_reg(reg) add_reg_from(reg, sh_eth_tsu_read(mdp, reg))
+
+	add_reg(EDSR);
+	add_reg(EDMR);
+	add_reg(EDTRR);
+	add_reg(EDRRR);
+	add_reg(EESR);
+	add_reg(EESIPR);
+	add_reg(TDLAR);
+	if (!cd->no_xdfar)
+		add_reg(TDFAR);
+	add_reg(TDFXR);
+	add_reg(TDFFR);
+	add_reg(RDLAR);
+	if (!cd->no_xdfar)
+		add_reg(RDFAR);
+	add_reg(RDFXR);
+	add_reg(RDFFR);
+	add_reg(TRSCER);
+	add_reg(RMFCR);
+	add_reg(TFTR);
+	add_reg(FDR);
+	add_reg(RMCR);
+	add_reg(TFUCR);
+	add_reg(RFOCR);
+	if (cd->rmiimode)
+		add_reg(RMIIMODE);
+	add_reg(FCFTR);
+	if (cd->rpadir)
+		add_reg(RPADIR);
+	if (!cd->no_trimd)
+		add_reg(TRIMD);
+	add_reg(ECMR);
+	add_reg(ECSR);
+	add_reg(ECSIPR);
+	add_reg(PIR);
+	if (!cd->no_psr)
+		add_reg(PSR);
+	add_reg(RDMLR);
+	add_reg(RFLR);
+	add_reg(IPGR);
+	if (cd->apr)
+		add_reg(APR);
+	if (cd->mpr)
+		add_reg(MPR);
+	add_reg(RFCR);
+	add_reg(RFCF);
+	if (cd->tpauser)
+		add_reg(TPAUSER);
+	add_reg(TPAUSECR);
+	if (cd->gecmr)
+		add_reg(GECMR);
+	if (cd->bculr)
+		add_reg(BCULR);
+	add_reg(MAHR);
+	add_reg(MALR);
+	if (!cd->no_tx_cntrs) {
+		add_reg(TROCR);
+		add_reg(CDCR);
+		add_reg(LCCR);
+		add_reg(CNDCR);
+	}
+	add_reg(CEFCR);
+	add_reg(FRECR);
+	add_reg(TSFRCR);
+	add_reg(TLFRCR);
+	if (cd->cexcr) {
+		add_reg(CERCR);
+		add_reg(CEECR);
+	}
+	add_reg(MAFCR);
+	if (cd->rtrate)
+		add_reg(RTRATE);
+	if (cd->csmr)
+		add_reg(CSMR);
+	if (cd->select_mii)
+		add_reg(RMII_MII);
+	if (cd->tsu) {
+		add_tsu_reg(ARSTR);
+		add_tsu_reg(TSU_CTRST);
+		if (cd->dual_port) {
+			add_tsu_reg(TSU_FWEN0);
+			add_tsu_reg(TSU_FWEN1);
+			add_tsu_reg(TSU_FCM);
+			add_tsu_reg(TSU_BSYSL0);
+			add_tsu_reg(TSU_BSYSL1);
+			add_tsu_reg(TSU_PRISL0);
+			add_tsu_reg(TSU_PRISL1);
+			add_tsu_reg(TSU_FWSL0);
+			add_tsu_reg(TSU_FWSL1);
+		}
+		add_tsu_reg(TSU_FWSLC);
+		if (cd->dual_port) {
+			add_tsu_reg(TSU_QTAGM0);
+			add_tsu_reg(TSU_QTAGM1);
+			add_tsu_reg(TSU_FWSR);
+			add_tsu_reg(TSU_FWINMK);
+			add_tsu_reg(TSU_ADQT0);
+			add_tsu_reg(TSU_ADQT1);
+			add_tsu_reg(TSU_VTAG0);
+			add_tsu_reg(TSU_VTAG1);
+		}
+		add_tsu_reg(TSU_ADSBSY);
+		add_tsu_reg(TSU_TEN);
+		add_tsu_reg(TSU_POST1);
+		add_tsu_reg(TSU_POST2);
+		add_tsu_reg(TSU_POST3);
+		add_tsu_reg(TSU_POST4);
+		/* This is the start of a table, not just a single register. */
+		if (buf) {
+			unsigned int i;
+
+			mark_reg_valid(TSU_ADRH0);
+			for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES * 2; i++)
+				*buf++ = ioread32(mdp->tsu_addr +
+						  mdp->reg_offset[TSU_ADRH0] +
+						  i * 4);
+		}
+		len += SH_ETH_TSU_CAM_ENTRIES * 2;
+	}
+
+#undef mark_reg_valid
+#undef add_reg_from
+#undef add_reg
+#undef add_tsu_reg
+
+	return len * 4;
+}
+
+static int sh_eth_get_regs_len(struct net_device *ndev)
+{
+	return __sh_eth_get_regs(ndev, NULL);
+}
+
+static void sh_eth_get_regs(struct net_device *ndev, struct ethtool_regs *regs,
+			    void *buf)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	regs->version = SH_ETH_REG_DUMP_VERSION;
+
+	pm_runtime_get_sync(&mdp->pdev->dev);
+	__sh_eth_get_regs(ndev, buf);
+	pm_runtime_put_sync(&mdp->pdev->dev);
+}
+
+static u32 sh_eth_get_msglevel(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	return mdp->msg_enable;
+}
+
+static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	mdp->msg_enable = value;
+}
+
+static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
+	"rx_current", "tx_current",
+	"rx_dirty", "tx_dirty",
+};
+#define SH_ETH_STATS_LEN  ARRAY_SIZE(sh_eth_gstrings_stats)
+
+static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return SH_ETH_STATS_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void sh_eth_get_ethtool_stats(struct net_device *ndev,
+				     struct ethtool_stats *stats, u64 *data)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int i = 0;
+
+	/* device-specific stats */
+	data[i++] = mdp->cur_rx;
+	data[i++] = mdp->cur_tx;
+	data[i++] = mdp->dirty_rx;
+	data[i++] = mdp->dirty_tx;
+}
+
+static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(data, sh_eth_gstrings_stats,
+		       sizeof(sh_eth_gstrings_stats));
+		break;
+	}
+}
+
+static void sh_eth_get_ringparam(struct net_device *ndev,
+				 struct ethtool_ringparam *ring,
+				 struct kernel_ethtool_ringparam *kernel_ring,
+				 struct netlink_ext_ack *extack)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	ring->rx_max_pending = RX_RING_MAX;
+	ring->tx_max_pending = TX_RING_MAX;
+	ring->rx_pending = mdp->num_rx_ring;
+	ring->tx_pending = mdp->num_tx_ring;
+}
+
+static int sh_eth_set_ringparam(struct net_device *ndev,
+				struct ethtool_ringparam *ring,
+				struct kernel_ethtool_ringparam *kernel_ring,
+				struct netlink_ext_ack *extack)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	if (ring->tx_pending > TX_RING_MAX ||
+	    ring->rx_pending > RX_RING_MAX ||
+	    ring->tx_pending < TX_RING_MIN ||
+	    ring->rx_pending < RX_RING_MIN)
+		return -EINVAL;
+	if (ring->rx_mini_pending || ring->rx_jumbo_pending)
+		return -EINVAL;
+
+	if (netif_running(ndev)) {
+		netif_device_detach(ndev);
+		netif_tx_disable(ndev);
+
+		/* Serialise with the interrupt handler and NAPI, then
+		 * disable interrupts.  We have to clear the
+		 * irq_enabled flag first to ensure that interrupts
+		 * won't be re-enabled.
+		 */
+		mdp->irq_enabled = false;
+		synchronize_irq(ndev->irq);
+		napi_synchronize(&mdp->napi);
+		sh_eth_write(ndev, 0x0000, EESIPR);
+
+		sh_eth_dev_exit(ndev);
+
+		/* Free all the skbuffs in the Rx queue and the DMA buffers. */
+		sh_eth_ring_free(ndev);
+	}
+
+	/* Set new parameters */
+	mdp->num_rx_ring = ring->rx_pending;
+	mdp->num_tx_ring = ring->tx_pending;
+
+	if (netif_running(ndev)) {
+		ret = sh_eth_ring_init(ndev);
+		if (ret < 0) {
+			netdev_err(ndev, "%s: sh_eth_ring_init failed.\n",
+				   __func__);
+			return ret;
+		}
+		ret = sh_eth_dev_init(ndev);
+		if (ret < 0) {
+			netdev_err(ndev, "%s: sh_eth_dev_init failed.\n",
+				   __func__);
+			return ret;
+		}
+
+		netif_device_attach(ndev);
+	}
+
+	return 0;
+}
+
+static void sh_eth_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	wol->supported = 0;
+	wol->wolopts = 0;
+
+	if (mdp->cd->magic) {
+		wol->supported = WAKE_MAGIC;
+		wol->wolopts = mdp->wol_enabled ? WAKE_MAGIC : 0;
+	}
+}
+
+static int sh_eth_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	if (!mdp->cd->magic || wol->wolopts & ~WAKE_MAGIC)
+		return -EOPNOTSUPP;
+
+	mdp->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
+
+	device_set_wakeup_enable(&mdp->pdev->dev, mdp->wol_enabled);
+
+	return 0;
+}
+
+static const struct ethtool_ops sh_eth_ethtool_ops = {
+	.get_regs_len	= sh_eth_get_regs_len,
+	.get_regs	= sh_eth_get_regs,
+	.nway_reset	= phy_ethtool_nway_reset,
+	.get_msglevel	= sh_eth_get_msglevel,
+	.set_msglevel	= sh_eth_set_msglevel,
+	.get_link	= ethtool_op_get_link,
+	.get_strings	= sh_eth_get_strings,
+	.get_ethtool_stats  = sh_eth_get_ethtool_stats,
+	.get_sset_count     = sh_eth_get_sset_count,
+	.get_ringparam	= sh_eth_get_ringparam,
+	.set_ringparam	= sh_eth_set_ringparam,
+	.get_link_ksettings = phy_ethtool_get_link_ksettings,
+	.set_link_ksettings = phy_ethtool_set_link_ksettings,
+	.get_wol	= sh_eth_get_wol,
+	.set_wol	= sh_eth_set_wol,
+};
+
+/* network device open function */
+static int sh_eth_open(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	pm_runtime_get_sync(&mdp->pdev->dev);
+
+	napi_enable(&mdp->napi);
+
+	ret = request_irq(ndev->irq, sh_eth_interrupt,
+			  mdp->cd->irq_flags, ndev->name, ndev);
+	if (ret) {
+		netdev_err(ndev, "Can not assign IRQ number\n");
+		goto out_napi_off;
+	}
+
+	/* Descriptor set */
+	ret = sh_eth_ring_init(ndev);
+	if (ret)
+		goto out_free_irq;
+
+	/* device init */
+	ret = sh_eth_dev_init(ndev);
+	if (ret)
+		goto out_free_irq;
+
+	/* PHY control start*/
+	ret = sh_eth_phy_start(ndev);
+	if (ret)
+		goto out_free_irq;
+
+	netif_start_queue(ndev);
+
+	mdp->is_opened = 1;
+
+	return ret;
+
+out_free_irq:
+	free_irq(ndev->irq, ndev);
+out_napi_off:
+	napi_disable(&mdp->napi);
+	pm_runtime_put_sync(&mdp->pdev->dev);
+	return ret;
+}
+
+/* Timeout function */
+static void sh_eth_tx_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_rxdesc *rxdesc;
+	int i;
+
+	netif_stop_queue(ndev);
+
+	netif_err(mdp, timer, ndev,
+		  "transmit timed out, status %8.8x, resetting...\n",
+		  sh_eth_read(ndev, EESR));
+
+	/* tx_errors count up */
+	ndev->stats.tx_errors++;
+
+	/* Free all the skbuffs in the Rx queue. */
+	for (i = 0; i < mdp->num_rx_ring; i++) {
+		rxdesc = &mdp->rx_ring[i];
+		rxdesc->status = cpu_to_le32(0);
+		rxdesc->addr = cpu_to_le32(0xBADF00D0);
+		dev_kfree_skb(mdp->rx_skbuff[i]);
+		mdp->rx_skbuff[i] = NULL;
+	}
+	for (i = 0; i < mdp->num_tx_ring; i++) {
+		dev_kfree_skb(mdp->tx_skbuff[i]);
+		mdp->tx_skbuff[i] = NULL;
+	}
+
+	/* device init */
+	sh_eth_dev_init(ndev);
+
+	netif_start_queue(ndev);
+}
+
+/* Packet transmit function */
+static netdev_tx_t sh_eth_start_xmit(struct sk_buff *skb,
+				     struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	struct sh_eth_txdesc *txdesc;
+	dma_addr_t dma_addr;
+	u32 entry;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdp->lock, flags);
+	if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) {
+		if (!sh_eth_tx_free(ndev, true)) {
+			netif_warn(mdp, tx_queued, ndev, "TxFD exhausted.\n");
+			netif_stop_queue(ndev);
+			spin_unlock_irqrestore(&mdp->lock, flags);
+			return NETDEV_TX_BUSY;
+		}
+	}
+	spin_unlock_irqrestore(&mdp->lock, flags);
+
+	if (skb_put_padto(skb, ETH_ZLEN))
+		return NETDEV_TX_OK;
+
+	entry = mdp->cur_tx % mdp->num_tx_ring;
+	mdp->tx_skbuff[entry] = skb;
+	txdesc = &mdp->tx_ring[entry];
+	/* soft swap. */
+	if (!mdp->cd->hw_swap)
+		sh_eth_soft_swap(PTR_ALIGN(skb->data, 4), skb->len + 2);
+	dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, skb->len,
+				  DMA_TO_DEVICE);
+	if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+		kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
+	txdesc->addr = cpu_to_le32(dma_addr);
+	txdesc->len  = cpu_to_le32(skb->len << 16);
+
+	dma_wmb(); /* TACT bit must be set after all the above writes */
+	if (entry >= mdp->num_tx_ring - 1)
+		txdesc->status |= cpu_to_le32(TD_TACT | TD_TDLE);
+	else
+		txdesc->status |= cpu_to_le32(TD_TACT);
+
+	wmb(); /* cur_tx must be incremented after TACT bit was set */
+	mdp->cur_tx++;
+
+	if (!(sh_eth_read(ndev, EDTRR) & mdp->cd->edtrr_trns))
+		sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
+
+	return NETDEV_TX_OK;
+}
+
+/* The statistics registers have write-clear behaviour, which means we
+ * will lose any increment between the read and write.  We mitigate
+ * this by only clearing when we read a non-zero value, so we will
+ * never falsely report a total of zero.
+ */
+static void
+sh_eth_update_stat(struct net_device *ndev, unsigned long *stat, int reg)
+{
+	u32 delta = sh_eth_read(ndev, reg);
+
+	if (delta) {
+		*stat += delta;
+		sh_eth_write(ndev, 0, reg);
+	}
+}
+
+static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	if (mdp->cd->no_tx_cntrs)
+		return &ndev->stats;
+
+	if (!mdp->is_opened)
+		return &ndev->stats;
+
+	sh_eth_update_stat(ndev, &ndev->stats.tx_dropped, TROCR);
+	sh_eth_update_stat(ndev, &ndev->stats.collisions, CDCR);
+	sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors, LCCR);
+
+	if (mdp->cd->cexcr) {
+		sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+				   CERCR);
+		sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+				   CEECR);
+	} else {
+		sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+				   CNDCR);
+	}
+
+	return &ndev->stats;
+}
+
+/* device close function */
+static int sh_eth_close(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	netif_stop_queue(ndev);
+
+	/* Serialise with the interrupt handler and NAPI, then disable
+	 * interrupts.  We have to clear the irq_enabled flag first to
+	 * ensure that interrupts won't be re-enabled.
+	 */
+	mdp->irq_enabled = false;
+	synchronize_irq(ndev->irq);
+	napi_disable(&mdp->napi);
+	sh_eth_write(ndev, 0x0000, EESIPR);
+
+	sh_eth_dev_exit(ndev);
+
+	/* PHY Disconnect */
+	if (ndev->phydev) {
+		phy_stop(ndev->phydev);
+		phy_disconnect(ndev->phydev);
+	}
+
+	free_irq(ndev->irq, ndev);
+
+	/* Free all the skbuffs in the Rx queue and the DMA buffer. */
+	sh_eth_ring_free(ndev);
+
+	mdp->is_opened = 0;
+
+	pm_runtime_put(&mdp->pdev->dev);
+
+	return 0;
+}
+
+static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu)
+{
+	if (netif_running(ndev))
+		return -EBUSY;
+
+	ndev->mtu = new_mtu;
+	netdev_update_features(ndev);
+
+	return 0;
+}
+
+/* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */
+static u32 sh_eth_tsu_get_post_mask(int entry)
+{
+	return 0x0f << (28 - ((entry % 8) * 4));
+}
+
+static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry)
+{
+	return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4));
+}
+
+static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev,
+					     int entry)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int reg = TSU_POST1 + entry / 8;
+	u32 tmp;
+
+	tmp = sh_eth_tsu_read(mdp, reg);
+	sh_eth_tsu_write(mdp, tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg);
+}
+
+static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev,
+					      int entry)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int reg = TSU_POST1 + entry / 8;
+	u32 post_mask, ref_mask, tmp;
+
+	post_mask = sh_eth_tsu_get_post_mask(entry);
+	ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask;
+
+	tmp = sh_eth_tsu_read(mdp, reg);
+	sh_eth_tsu_write(mdp, tmp & ~post_mask, reg);
+
+	/* If other port enables, the function returns "true" */
+	return tmp & ref_mask;
+}
+
+static int sh_eth_tsu_busy(struct net_device *ndev)
+{
+	int timeout = SH_ETH_TSU_TIMEOUT_MS * 100;
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) {
+		udelay(10);
+		timeout--;
+		if (timeout <= 0) {
+			netdev_err(ndev, "%s: timeout\n", __func__);
+			return -ETIMEDOUT;
+		}
+	}
+
+	return 0;
+}
+
+static int sh_eth_tsu_write_entry(struct net_device *ndev, u16 offset,
+				  const u8 *addr)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 val;
+
+	val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3];
+	iowrite32(val, mdp->tsu_addr + offset);
+	if (sh_eth_tsu_busy(ndev) < 0)
+		return -EBUSY;
+
+	val = addr[4] << 8 | addr[5];
+	iowrite32(val, mdp->tsu_addr + offset + 4);
+	if (sh_eth_tsu_busy(ndev) < 0)
+		return -EBUSY;
+
+	return 0;
+}
+
+static void sh_eth_tsu_read_entry(struct net_device *ndev, u16 offset, u8 *addr)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 val;
+
+	val = ioread32(mdp->tsu_addr + offset);
+	addr[0] = (val >> 24) & 0xff;
+	addr[1] = (val >> 16) & 0xff;
+	addr[2] = (val >> 8) & 0xff;
+	addr[3] = val & 0xff;
+	val = ioread32(mdp->tsu_addr + offset + 4);
+	addr[4] = (val >> 8) & 0xff;
+	addr[5] = val & 0xff;
+}
+
+
+static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+	int i;
+	u8 c_addr[ETH_ALEN];
+
+	for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
+		sh_eth_tsu_read_entry(ndev, reg_offset, c_addr);
+		if (ether_addr_equal(addr, c_addr))
+			return i;
+	}
+
+	return -ENOENT;
+}
+
+static int sh_eth_tsu_find_empty(struct net_device *ndev)
+{
+	u8 blank[ETH_ALEN];
+	int entry;
+
+	memset(blank, 0, sizeof(blank));
+	entry = sh_eth_tsu_find_entry(ndev, blank);
+	return (entry < 0) ? -ENOMEM : entry;
+}
+
+static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev,
+					      int entry)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+	int ret;
+	u8 blank[ETH_ALEN];
+
+	sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) &
+			 ~(1 << (31 - entry)), TSU_TEN);
+
+	memset(blank, 0, sizeof(blank));
+	ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+	int i, ret;
+
+	if (!mdp->cd->tsu)
+		return 0;
+
+	i = sh_eth_tsu_find_entry(ndev, addr);
+	if (i < 0) {
+		/* No entry found, create one */
+		i = sh_eth_tsu_find_empty(ndev);
+		if (i < 0)
+			return -ENOMEM;
+		ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr);
+		if (ret < 0)
+			return ret;
+
+		/* Enable the entry */
+		sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) |
+				 (1 << (31 - i)), TSU_TEN);
+	}
+
+	/* Entry found or created, enable POST */
+	sh_eth_tsu_enable_cam_entry_post(ndev, i);
+
+	return 0;
+}
+
+static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int i, ret;
+
+	if (!mdp->cd->tsu)
+		return 0;
+
+	i = sh_eth_tsu_find_entry(ndev, addr);
+	if (i) {
+		/* Entry found */
+		if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
+			goto done;
+
+		/* Disable the entry if both ports was disabled */
+		ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
+		if (ret < 0)
+			return ret;
+	}
+done:
+	return 0;
+}
+
+static int sh_eth_tsu_purge_all(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int i, ret;
+
+	if (!mdp->cd->tsu)
+		return 0;
+
+	for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) {
+		if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
+			continue;
+
+		/* Disable the entry if both ports was disabled */
+		ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void sh_eth_tsu_purge_mcast(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+	u8 addr[ETH_ALEN];
+	int i;
+
+	if (!mdp->cd->tsu)
+		return;
+
+	for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
+		sh_eth_tsu_read_entry(ndev, reg_offset, addr);
+		if (is_multicast_ether_addr(addr))
+			sh_eth_tsu_del_entry(ndev, addr);
+	}
+}
+
+/* Update promiscuous flag and multicast filter */
+static void sh_eth_set_rx_mode(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	u32 ecmr_bits;
+	int mcast_all = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdp->lock, flags);
+	/* Initial condition is MCT = 1, PRM = 0.
+	 * Depending on ndev->flags, set PRM or clear MCT
+	 */
+	ecmr_bits = sh_eth_read(ndev, ECMR) & ~ECMR_PRM;
+	if (mdp->cd->tsu)
+		ecmr_bits |= ECMR_MCT;
+
+	if (!(ndev->flags & IFF_MULTICAST)) {
+		sh_eth_tsu_purge_mcast(ndev);
+		mcast_all = 1;
+	}
+	if (ndev->flags & IFF_ALLMULTI) {
+		sh_eth_tsu_purge_mcast(ndev);
+		ecmr_bits &= ~ECMR_MCT;
+		mcast_all = 1;
+	}
+
+	if (ndev->flags & IFF_PROMISC) {
+		sh_eth_tsu_purge_all(ndev);
+		ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM;
+	} else if (mdp->cd->tsu) {
+		struct netdev_hw_addr *ha;
+		netdev_for_each_mc_addr(ha, ndev) {
+			if (mcast_all && is_multicast_ether_addr(ha->addr))
+				continue;
+
+			if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) {
+				if (!mcast_all) {
+					sh_eth_tsu_purge_mcast(ndev);
+					ecmr_bits &= ~ECMR_MCT;
+					mcast_all = 1;
+				}
+			}
+		}
+	}
+
+	/* update the ethernet mode */
+	sh_eth_write(ndev, ecmr_bits, ECMR);
+
+	spin_unlock_irqrestore(&mdp->lock, flags);
+}
+
+static void sh_eth_set_rx_csum(struct net_device *ndev, bool enable)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdp->lock, flags);
+
+	/* Disable TX and RX */
+	sh_eth_rcv_snd_disable(ndev);
+
+	/* Modify RX Checksum setting */
+	sh_eth_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
+
+	/* Enable TX and RX */
+	sh_eth_rcv_snd_enable(ndev);
+
+	spin_unlock_irqrestore(&mdp->lock, flags);
+}
+
+static int sh_eth_set_features(struct net_device *ndev,
+			       netdev_features_t features)
+{
+	netdev_features_t changed = ndev->features ^ features;
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	if (changed & NETIF_F_RXCSUM && mdp->cd->rx_csum)
+		sh_eth_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
+
+	ndev->features = features;
+
+	return 0;
+}
+
+static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
+{
+	if (!mdp->port)
+		return TSU_VTAG0;
+	else
+		return TSU_VTAG1;
+}
+
+static int sh_eth_vlan_rx_add_vid(struct net_device *ndev,
+				  __be16 proto, u16 vid)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int vtag_reg_index = sh_eth_get_vtag_index(mdp);
+
+	if (unlikely(!mdp->cd->tsu))
+		return -EPERM;
+
+	/* No filtering if vid = 0 */
+	if (!vid)
+		return 0;
+
+	mdp->vlan_num_ids++;
+
+	/* The controller has one VLAN tag HW filter. So, if the filter is
+	 * already enabled, the driver disables it and the filte
+	 */
+	if (mdp->vlan_num_ids > 1) {
+		/* disable VLAN filter */
+		sh_eth_tsu_write(mdp, 0, vtag_reg_index);
+		return 0;
+	}
+
+	sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK),
+			 vtag_reg_index);
+
+	return 0;
+}
+
+static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev,
+				   __be16 proto, u16 vid)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int vtag_reg_index = sh_eth_get_vtag_index(mdp);
+
+	if (unlikely(!mdp->cd->tsu))
+		return -EPERM;
+
+	/* No filtering if vid = 0 */
+	if (!vid)
+		return 0;
+
+	mdp->vlan_num_ids--;
+	sh_eth_tsu_write(mdp, 0, vtag_reg_index);
+
+	return 0;
+}
+
+/* SuperH's TSU register init function */
+static void sh_eth_tsu_init(struct sh_eth_private *mdp)
+{
+	if (!mdp->cd->dual_port) {
+		sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
+		sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL,
+				 TSU_FWSLC);	/* Enable POST registers */
+		return;
+	}
+
+	sh_eth_tsu_write(mdp, 0, TSU_FWEN0);	/* Disable forward(0->1) */
+	sh_eth_tsu_write(mdp, 0, TSU_FWEN1);	/* Disable forward(1->0) */
+	sh_eth_tsu_write(mdp, 0, TSU_FCM);	/* forward fifo 3k-3k */
+	sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
+	sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
+	sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
+	sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
+	sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
+	sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
+	sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
+	sh_eth_tsu_write(mdp, 0, TSU_QTAGM0);	/* Disable QTAG(0->1) */
+	sh_eth_tsu_write(mdp, 0, TSU_QTAGM1);	/* Disable QTAG(1->0) */
+	sh_eth_tsu_write(mdp, 0, TSU_FWSR);	/* all interrupt status clear */
+	sh_eth_tsu_write(mdp, 0, TSU_FWINMK);	/* Disable all interrupt */
+	sh_eth_tsu_write(mdp, 0, TSU_TEN);	/* Disable all CAM entry */
+	sh_eth_tsu_write(mdp, 0, TSU_POST1);	/* Disable CAM entry [ 0- 7] */
+	sh_eth_tsu_write(mdp, 0, TSU_POST2);	/* Disable CAM entry [ 8-15] */
+	sh_eth_tsu_write(mdp, 0, TSU_POST3);	/* Disable CAM entry [16-23] */
+	sh_eth_tsu_write(mdp, 0, TSU_POST4);	/* Disable CAM entry [24-31] */
+}
+
+/* MDIO bus release function */
+static int sh_mdio_release(struct sh_eth_private *mdp)
+{
+	/* unregister mdio bus */
+	mdiobus_unregister(mdp->mii_bus);
+
+	/* free bitbang info */
+	free_mdio_bitbang(mdp->mii_bus);
+
+	return 0;
+}
+
+static int sh_mdiobb_read_c22(struct mii_bus *bus, int phy, int reg)
+{
+	int res;
+
+	pm_runtime_get_sync(bus->parent);
+	res = mdiobb_read_c22(bus, phy, reg);
+	pm_runtime_put(bus->parent);
+
+	return res;
+}
+
+static int sh_mdiobb_write_c22(struct mii_bus *bus, int phy, int reg, u16 val)
+{
+	int res;
+
+	pm_runtime_get_sync(bus->parent);
+	res = mdiobb_write_c22(bus, phy, reg, val);
+	pm_runtime_put(bus->parent);
+
+	return res;
+}
+
+static int sh_mdiobb_read_c45(struct mii_bus *bus, int phy, int devad, int reg)
+{
+	int res;
+
+	pm_runtime_get_sync(bus->parent);
+	res = mdiobb_read_c45(bus, phy, devad, reg);
+	pm_runtime_put(bus->parent);
+
+	return res;
+}
+
+static int sh_mdiobb_write_c45(struct mii_bus *bus, int phy, int devad,
+			       int reg, u16 val)
+{
+	int res;
+
+	pm_runtime_get_sync(bus->parent);
+	res = mdiobb_write_c45(bus, phy, devad, reg, val);
+	pm_runtime_put(bus->parent);
+
+	return res;
+}
+
+/* MDIO bus init function */
+static int sh_mdio_init(struct sh_eth_private *mdp,
+			struct sh_eth_plat_data *pd)
+{
+	int ret;
+	struct bb_info *bitbang;
+	struct platform_device *pdev = mdp->pdev;
+	struct device *dev = &mdp->pdev->dev;
+	struct phy_device *phydev;
+	struct device_node *pn;
+
+	/* create bit control struct for PHY */
+	bitbang = devm_kzalloc(dev, sizeof(struct bb_info), GFP_KERNEL);
+	if (!bitbang)
+		return -ENOMEM;
+
+	/* bitbang init */
+	bitbang->addr = mdp->addr + mdp->reg_offset[PIR];
+	bitbang->set_gate = pd->set_mdio_gate;
+	bitbang->ctrl.ops = &bb_ops;
+
+	/* MII controller setting */
+	mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
+	if (!mdp->mii_bus)
+		return -ENOMEM;
+
+	/* Wrap accessors with Runtime PM-aware ops */
+	mdp->mii_bus->read = sh_mdiobb_read_c22;
+	mdp->mii_bus->write = sh_mdiobb_write_c22;
+	mdp->mii_bus->read_c45 = sh_mdiobb_read_c45;
+	mdp->mii_bus->write_c45 = sh_mdiobb_write_c45;
+
+	/* Hook up MII support for ethtool */
+	mdp->mii_bus->name = "sh_mii";
+	mdp->mii_bus->parent = dev;
+	snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+		 pdev->name, pdev->id);
+
+	/* register MDIO bus */
+	if (pd->phy_irq > 0)
+		mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
+
+	ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
+	if (ret)
+		goto out_free_bus;
+
+	pn = of_parse_phandle(dev->of_node, "phy-handle", 0);
+	phydev = of_phy_find_device(pn);
+	if (phydev) {
+		phydev->mac_managed_pm = true;
+		put_device(&phydev->mdio.dev);
+	}
+	of_node_put(pn);
+
+	return 0;
+
+out_free_bus:
+	free_mdio_bitbang(mdp->mii_bus);
+	return ret;
+}
+
+static const u16 *sh_eth_get_register_offset(int register_type)
+{
+	const u16 *reg_offset = NULL;
+
+	switch (register_type) {
+	case SH_ETH_REG_GIGABIT:
+		reg_offset = sh_eth_offset_gigabit;
+		break;
+	case SH_ETH_REG_FAST_RCAR:
+		reg_offset = sh_eth_offset_fast_rcar;
+		break;
+	case SH_ETH_REG_FAST_SH4:
+		reg_offset = sh_eth_offset_fast_sh4;
+		break;
+	case SH_ETH_REG_FAST_SH3_SH2:
+		reg_offset = sh_eth_offset_fast_sh3_sh2;
+		break;
+	}
+
+	return reg_offset;
+}
+
+static const struct net_device_ops sh_eth_netdev_ops = {
+	.ndo_open		= sh_eth_open,
+	.ndo_stop		= sh_eth_close,
+	.ndo_start_xmit		= sh_eth_start_xmit,
+	.ndo_get_stats		= sh_eth_get_stats,
+	.ndo_set_rx_mode	= sh_eth_set_rx_mode,
+	.ndo_tx_timeout		= sh_eth_tx_timeout,
+	.ndo_eth_ioctl		= phy_do_ioctl_running,
+	.ndo_change_mtu		= sh_eth_change_mtu,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_set_features	= sh_eth_set_features,
+};
+
+static const struct net_device_ops sh_eth_netdev_ops_tsu = {
+	.ndo_open		= sh_eth_open,
+	.ndo_stop		= sh_eth_close,
+	.ndo_start_xmit		= sh_eth_start_xmit,
+	.ndo_get_stats		= sh_eth_get_stats,
+	.ndo_set_rx_mode	= sh_eth_set_rx_mode,
+	.ndo_vlan_rx_add_vid	= sh_eth_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= sh_eth_vlan_rx_kill_vid,
+	.ndo_tx_timeout		= sh_eth_tx_timeout,
+	.ndo_eth_ioctl		= phy_do_ioctl_running,
+	.ndo_change_mtu		= sh_eth_change_mtu,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_set_features	= sh_eth_set_features,
+};
+
+#ifdef CONFIG_OF
+static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
+{
+	struct device_node *np = dev->of_node;
+	struct sh_eth_plat_data *pdata;
+	phy_interface_t interface;
+	int ret;
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL;
+
+	ret = of_get_phy_mode(np, &interface);
+	if (ret)
+		return NULL;
+	pdata->phy_interface = interface;
+
+	of_get_mac_address(np, pdata->mac_addr);
+
+	pdata->no_ether_link =
+		of_property_read_bool(np, "renesas,no-ether-link");
+	pdata->ether_link_active_low =
+		of_property_read_bool(np, "renesas,ether-link-active-low");
+
+	return pdata;
+}
+
+static const struct of_device_id sh_eth_match_table[] = {
+	{ .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data },
+	{ .compatible = "renesas,ether-r8a7743", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,ether-r8a7745", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,ether-r8a7778", .data = &rcar_gen1_data },
+	{ .compatible = "renesas,ether-r8a7779", .data = &rcar_gen1_data },
+	{ .compatible = "renesas,ether-r8a7790", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,ether-r8a7791", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,ether-r8a7793", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,ether-r8a7794", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,gether-r8a77980", .data = &r8a77980_data },
+	{ .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data },
+	{ .compatible = "renesas,ether-r7s9210", .data = &r7s9210_data },
+	{ .compatible = "renesas,rcar-gen1-ether", .data = &rcar_gen1_data },
+	{ .compatible = "renesas,rcar-gen2-ether", .data = &rcar_gen2_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sh_eth_match_table);
+#else
+static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
+{
+	return NULL;
+}
+#endif
+
+static int sh_eth_drv_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct sh_eth_plat_data *pd = dev_get_platdata(&pdev->dev);
+	const struct platform_device_id *id = platform_get_device_id(pdev);
+	struct sh_eth_private *mdp;
+	struct net_device *ndev;
+	int ret;
+
+	ndev = alloc_etherdev(sizeof(struct sh_eth_private));
+	if (!ndev)
+		return -ENOMEM;
+
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		goto out_release;
+	ndev->irq = ret;
+
+	SET_NETDEV_DEV(ndev, &pdev->dev);
+
+	mdp = netdev_priv(ndev);
+	mdp->num_tx_ring = TX_RING_SIZE;
+	mdp->num_rx_ring = RX_RING_SIZE;
+	mdp->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(mdp->addr)) {
+		ret = PTR_ERR(mdp->addr);
+		goto out_release;
+	}
+
+	ndev->base_addr = res->start;
+
+	spin_lock_init(&mdp->lock);
+	mdp->pdev = pdev;
+
+	if (pdev->dev.of_node)
+		pd = sh_eth_parse_dt(&pdev->dev);
+	if (!pd) {
+		dev_err(&pdev->dev, "no platform data\n");
+		ret = -EINVAL;
+		goto out_release;
+	}
+
+	/* get PHY ID */
+	mdp->phy_id = pd->phy;
+	mdp->phy_interface = pd->phy_interface;
+	mdp->no_ether_link = pd->no_ether_link;
+	mdp->ether_link_active_low = pd->ether_link_active_low;
+
+	/* set cpu data */
+	if (id)
+		mdp->cd = (struct sh_eth_cpu_data *)id->driver_data;
+	else
+		mdp->cd = (struct sh_eth_cpu_data *)of_device_get_match_data(&pdev->dev);
+
+	mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type);
+	if (!mdp->reg_offset) {
+		dev_err(&pdev->dev, "Unknown register type (%d)\n",
+			mdp->cd->register_type);
+		ret = -EINVAL;
+		goto out_release;
+	}
+	sh_eth_set_default_cpu_data(mdp->cd);
+
+	/* User's manual states max MTU should be 2048 but due to the
+	 * alignment calculations in sh_eth_ring_init() the practical
+	 * MTU is a bit less. Maybe this can be optimized some more.
+	 */
+	ndev->max_mtu = 2000 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
+	ndev->min_mtu = ETH_MIN_MTU;
+
+	if (mdp->cd->rx_csum) {
+		ndev->features = NETIF_F_RXCSUM;
+		ndev->hw_features = NETIF_F_RXCSUM;
+	}
+
+	/* set function */
+	if (mdp->cd->tsu)
+		ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
+	else
+		ndev->netdev_ops = &sh_eth_netdev_ops;
+	ndev->ethtool_ops = &sh_eth_ethtool_ops;
+	ndev->watchdog_timeo = TX_TIMEOUT;
+
+	/* debug message level */
+	mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
+
+	/* read and set MAC address */
+	read_mac_address(ndev, pd->mac_addr);
+	if (!is_valid_ether_addr(ndev->dev_addr)) {
+		dev_warn(&pdev->dev,
+			 "no valid MAC address supplied, using a random one.\n");
+		eth_hw_addr_random(ndev);
+	}
+
+	if (mdp->cd->tsu) {
+		int port = pdev->id < 0 ? 0 : pdev->id % 2;
+		struct resource *rtsu;
+
+		rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+		if (!rtsu) {
+			dev_err(&pdev->dev, "no TSU resource\n");
+			ret = -ENODEV;
+			goto out_release;
+		}
+		/* We can only request the  TSU region  for the first port
+		 * of the two  sharing this TSU for the probe to succeed...
+		 */
+		if (port == 0 &&
+		    !devm_request_mem_region(&pdev->dev, rtsu->start,
+					     resource_size(rtsu),
+					     dev_name(&pdev->dev))) {
+			dev_err(&pdev->dev, "can't request TSU resource.\n");
+			ret = -EBUSY;
+			goto out_release;
+		}
+		/* ioremap the TSU registers */
+		mdp->tsu_addr = devm_ioremap(&pdev->dev, rtsu->start,
+					     resource_size(rtsu));
+		if (!mdp->tsu_addr) {
+			dev_err(&pdev->dev, "TSU region ioremap() failed.\n");
+			ret = -ENOMEM;
+			goto out_release;
+		}
+		mdp->port = port;
+		ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
+		/* Need to init only the first port of the two sharing a TSU */
+		if (port == 0) {
+			if (mdp->cd->chip_reset)
+				mdp->cd->chip_reset(ndev);
+
+			/* TSU init (Init only)*/
+			sh_eth_tsu_init(mdp);
+		}
+	}
+
+	if (mdp->cd->rmiimode)
+		sh_eth_write(ndev, 0x1, RMIIMODE);
+
+	/* MDIO bus init */
+	ret = sh_mdio_init(mdp, pd);
+	if (ret) {
+		dev_err_probe(&pdev->dev, ret, "MDIO init failed\n");
+		goto out_release;
+	}
+
+	netif_napi_add(ndev, &mdp->napi, sh_eth_poll);
+
+	/* network device register */
+	ret = register_netdev(ndev);
+	if (ret)
+		goto out_napi_del;
+
+	if (mdp->cd->magic)
+		device_set_wakeup_capable(&pdev->dev, 1);
+
+	/* print device information */
+	netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n",
+		    (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
+
+	pm_runtime_put(&pdev->dev);
+	platform_set_drvdata(pdev, ndev);
+
+	return ret;
+
+out_napi_del:
+	netif_napi_del(&mdp->napi);
+	sh_mdio_release(mdp);
+
+out_release:
+	/* net_dev free */
+	free_netdev(ndev);
+
+	pm_runtime_put(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+	return ret;
+}
+
+static int sh_eth_drv_remove(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	unregister_netdev(ndev);
+	netif_napi_del(&mdp->napi);
+	sh_mdio_release(mdp);
+	pm_runtime_disable(&pdev->dev);
+	free_netdev(ndev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
+static int sh_eth_wol_setup(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+
+	/* Only allow ECI interrupts */
+	synchronize_irq(ndev->irq);
+	napi_disable(&mdp->napi);
+	sh_eth_write(ndev, EESIPR_ECIIP, EESIPR);
+
+	/* Enable MagicPacket */
+	sh_eth_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
+
+	return enable_irq_wake(ndev->irq);
+}
+
+static int sh_eth_wol_restore(struct net_device *ndev)
+{
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	napi_enable(&mdp->napi);
+
+	/* Disable MagicPacket */
+	sh_eth_modify(ndev, ECMR, ECMR_MPDE, 0);
+
+	/* The device needs to be reset to restore MagicPacket logic
+	 * for next wakeup. If we close and open the device it will
+	 * both be reset and all registers restored. This is what
+	 * happens during suspend and resume without WoL enabled.
+	 */
+	sh_eth_close(ndev);
+	ret = sh_eth_open(ndev);
+	if (ret < 0)
+		return ret;
+
+	return disable_irq_wake(ndev->irq);
+}
+
+static int sh_eth_suspend(struct device *dev)
+{
+	struct net_device *ndev = dev_get_drvdata(dev);
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	if (!netif_running(ndev))
+		return 0;
+
+	netif_device_detach(ndev);
+
+	if (mdp->wol_enabled)
+		ret = sh_eth_wol_setup(ndev);
+	else
+		ret = sh_eth_close(ndev);
+
+	return ret;
+}
+
+static int sh_eth_resume(struct device *dev)
+{
+	struct net_device *ndev = dev_get_drvdata(dev);
+	struct sh_eth_private *mdp = netdev_priv(ndev);
+	int ret;
+
+	if (!netif_running(ndev))
+		return 0;
+
+	if (mdp->wol_enabled)
+		ret = sh_eth_wol_restore(ndev);
+	else
+		ret = sh_eth_open(ndev);
+
+	if (ret < 0)
+		return ret;
+
+	netif_device_attach(ndev);
+
+	return ret;
+}
+#endif
+
+static int sh_eth_runtime_nop(struct device *dev)
+{
+	/* Runtime PM callback shared between ->runtime_suspend()
+	 * and ->runtime_resume(). Simply returns success.
+	 *
+	 * This driver re-initializes all registers after
+	 * pm_runtime_get_sync() anyway so there is no need
+	 * to save and restore registers here.
+	 */
+	return 0;
+}
+
+static const struct dev_pm_ops sh_eth_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume)
+	SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL)
+};
+#define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)
+#else
+#define SH_ETH_PM_OPS NULL
+#endif
+
+static const struct platform_device_id sh_eth_id_table[] = {
+	{ "sh7619-ether", (kernel_ulong_t)&sh7619_data },
+	{ "sh771x-ether", (kernel_ulong_t)&sh771x_data },
+	{ "sh7724-ether", (kernel_ulong_t)&sh7724_data },
+	{ "sh7734-gether", (kernel_ulong_t)&sh7734_data },
+	{ "sh7757-ether", (kernel_ulong_t)&sh7757_data },
+	{ "sh7757-gether", (kernel_ulong_t)&sh7757_data_giga },
+	{ "sh7763-gether", (kernel_ulong_t)&sh7763_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, sh_eth_id_table);
+
+static struct platform_driver sh_eth_driver = {
+	.probe = sh_eth_drv_probe,
+	.remove = sh_eth_drv_remove,
+	.id_table = sh_eth_id_table,
+	.driver = {
+		   .name = CARDNAME,
+		   .pm = SH_ETH_PM_OPS,
+		   .of_match_table = of_match_ptr(sh_eth_match_table),
+	},
+};
+
+module_platform_driver(sh_eth_driver);
+
+MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
+MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
+MODULE_LICENSE("GPL v2");