path: root/freed-ora/tags/f27/4.15.9-300.fc27.gnu/arm64-socionext-96b-enablement.patch

From e3dff048a10f16aa0fd32438442ce39558bbdbef Mon Sep 17 00:00:00 2001
From: Jassi Brar <jaswinder.singh@linaro.org>
Date: Tue, 29 Aug 2017 22:45:59 +0530
Subject: net: socionext: Add Synquacer NetSec driver

This driver adds support for Socionext "netsec" IP Gigabit
Ethernet + PHY IP used in the Synquacer SC2A11 SoC.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 drivers/net/ethernet/Kconfig                       |   1 +
 drivers/net/ethernet/Makefile                      |   1 +
 drivers/net/ethernet/socionext/Kconfig             |  29 +
 drivers/net/ethernet/socionext/Makefile            |   1 +
 drivers/net/ethernet/socionext/netsec/Makefile     |   6 +
 drivers/net/ethernet/socionext/netsec/netsec.h     | 408 ++++++++++++++
 .../socionext/netsec/netsec_desc_ring_access.c     | 623 +++++++++++++++++++++
 .../net/ethernet/socionext/netsec/netsec_ethtool.c |  78 +++
 .../ethernet/socionext/netsec/netsec_gmac_access.c | 330 +++++++++++
 .../net/ethernet/socionext/netsec/netsec_netdev.c  | 540 ++++++++++++++++++
 .../ethernet/socionext/netsec/netsec_platform.c    | 435 ++++++++++++++
 11 files changed, 2452 insertions(+)
 create mode 100644 drivers/net/ethernet/socionext/Kconfig
 create mode 100644 drivers/net/ethernet/socionext/Makefile
 create mode 100644 drivers/net/ethernet/socionext/netsec/Makefile
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec.h
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec_desc_ring_access.c
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec_ethtool.c
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec_gmac_access.c
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec_netdev.c
 create mode 100644 drivers/net/ethernet/socionext/netsec/netsec_platform.c

diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index c604213..d50519e 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -170,6 +170,7 @@ source "drivers/net/ethernet/sis/Kconfig"
 source "drivers/net/ethernet/sfc/Kconfig"
 source "drivers/net/ethernet/sgi/Kconfig"
 source "drivers/net/ethernet/smsc/Kconfig"
+source "drivers/net/ethernet/socionext/Kconfig"
 source "drivers/net/ethernet/stmicro/Kconfig"
 source "drivers/net/ethernet/sun/Kconfig"
 source "drivers/net/ethernet/tehuti/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index a0a03d4..6ae1bb9 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -81,6 +81,7 @@ obj-$(CONFIG_SFC) += sfc/
 obj-$(CONFIG_SFC_FALCON) += sfc/falcon/
 obj-$(CONFIG_NET_VENDOR_SGI) += sgi/
 obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/
+obj-$(CONFIG_NET_VENDOR_SNI) += socionext/
 obj-$(CONFIG_NET_VENDOR_STMICRO) += stmicro/
 obj-$(CONFIG_NET_VENDOR_SUN) += sun/
 obj-$(CONFIG_NET_VENDOR_TEHUTI) += tehuti/
diff --git a/drivers/net/ethernet/socionext/Kconfig b/drivers/net/ethernet/socionext/Kconfig
new file mode 100644
index 0000000..a6dc195
--- /dev/null
+++ b/drivers/net/ethernet/socionext/Kconfig
@@ -0,0 +1,29 @@
+#
+# Socionext Network device configuration
+#
+
+config NET_VENDOR_SNI
+	bool "Socionext devices"
+	default y
+	---help---
+	  If you have a network (Ethernet) card belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  the questions about Socionext cards. If you say Y, you will be asked
+	  for your specific card in the following questions.
+
+if NET_VENDOR_SNI
+
+config SNI_NETSEC
+	tristate "NETSEC Driver Support"
+	depends on OF
+	select PHYLIB
+	select MII
+help
+	  Enable to add support for the SocioNext NetSec Gigabit Ethernet
+	  controller + PHY, as found on the Synquacer SC2A11 SoC
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called netsec.  If unsure, say N.
+
+endif # NET_VENDOR_SNI
diff --git a/drivers/net/ethernet/socionext/Makefile b/drivers/net/ethernet/socionext/Makefile
new file mode 100644
index 0000000..9555899
--- /dev/null
+++ b/drivers/net/ethernet/socionext/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_SNI_NETSEC) += netsec/
diff --git a/drivers/net/ethernet/socionext/netsec/Makefile b/drivers/net/ethernet/socionext/netsec/Makefile
new file mode 100644
index 0000000..18884ed
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/Makefile
@@ -0,0 +1,6 @@
+obj-$(CONFIG_SNI_NETSEC) := netsec.o
+netsec-objs := netsec_desc_ring_access.o \
+		netsec_netdev.o \
+		netsec_ethtool.o \
+		netsec_platform.o \
+		netsec_gmac_access.o
diff --git a/drivers/net/ethernet/socionext/netsec/netsec.h b/drivers/net/ethernet/socionext/netsec/netsec.h
new file mode 100644
index 0000000..3b97661
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec.h
@@ -0,0 +1,408 @@
+/**
+ * netsec.h
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+#ifndef NETSEC_INTERNAL_H
+#define NETSEC_INTERNAL_H
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/phy.h>
+#include <linux/ethtool.h>
+#include <linux/of_address.h>
+#include <linux/of_mdio.h>
+#include <linux/etherdevice.h>
+#include <net/sock.h>
+
+#define NETSEC_FLOW_CONTROL_START_THRESHOLD	36
+#define NETSEC_FLOW_CONTROL_STOP_THRESHOLD	48
+
+#define NETSEC_CLK_MHZ				1000000
+
+#define NETSEC_RX_PKT_BUF_LEN			1522
+#define NETSEC_RX_JUMBO_PKT_BUF_LEN		9022
+
+#define NETSEC_NETDEV_TX_PKT_SCAT_NUM_MAX	19
+
+#define DESC_NUM				128
+
+#define NETSEC_TX_SHIFT_OWN_FIELD		31
+#define NETSEC_TX_SHIFT_LD_FIELD		30
+#define NETSEC_TX_SHIFT_DRID_FIELD		24
+#define NETSEC_TX_SHIFT_PT_FIELD		21
+#define NETSEC_TX_SHIFT_TDRID_FIELD		16
+#define NETSEC_TX_SHIFT_CC_FIELD		15
+#define NETSEC_TX_SHIFT_FS_FIELD		9
+#define NETSEC_TX_LAST				8
+#define NETSEC_TX_SHIFT_CO			7
+#define NETSEC_TX_SHIFT_SO			6
+#define NETSEC_TX_SHIFT_TRS_FIELD		4
+
+#define NETSEC_RX_PKT_OWN_FIELD			31
+#define NETSEC_RX_PKT_LD_FIELD			30
+#define NETSEC_RX_PKT_SDRID_FIELD		24
+#define NETSEC_RX_PKT_FR_FIELD			23
+#define NETSEC_RX_PKT_ER_FIELD			21
+#define NETSEC_RX_PKT_ERR_FIELD			16
+#define NETSEC_RX_PKT_TDRID_FIELD		12
+#define NETSEC_RX_PKT_FS_FIELD			9
+#define NETSEC_RX_PKT_LS_FIELD			8
+#define NETSEC_RX_PKT_CO_FIELD			6
+
+#define NETSEC_RX_PKT_ERR_MASK			3
+
+#define NETSEC_MAX_TX_PKT_LEN			1518
+#define NETSEC_MAX_TX_JUMBO_PKT_LEN		9018
+
+enum netsec_rings {
+	NETSEC_RING_TX,
+	NETSEC_RING_RX
+};
+
+#define NETSEC_RING_GMAC			15
+#define NETSEC_RING_MAX				1
+
+#define NETSEC_TCP_SEG_LEN_MAX			1460
+#define NETSEC_TCP_JUMBO_SEG_LEN_MAX		8960
+
+#define NETSEC_RX_CKSUM_NOTAVAIL		0
+#define NETSEC_RX_CKSUM_OK			1
+#define NETSEC_RX_CKSUM_NG			2
+
+#define NETSEC_TOP_IRQ_REG_CODE_LOAD_END	BIT(20)
+#define NETSEC_IRQ_TRANSITION_COMPLETE		BIT(4)
+#define NETSEC_IRQ_RX				BIT(1)
+#define NETSEC_IRQ_TX				BIT(0)
+
+#define NETSEC_IRQ_EMPTY			BIT(17)
+#define NETSEC_IRQ_ERR				BIT(16)
+#define NETSEC_IRQ_PKT_CNT			BIT(15)
+#define NETSEC_IRQ_TIMEUP			BIT(14)
+#define NETSEC_IRQ_RCV				(NETSEC_IRQ_PKT_CNT | \
+						 NETSEC_IRQ_TIMEUP)
+
+#define NETSEC_IRQ_TX_DONE			BIT(15)
+#define NETSEC_IRQ_SND				(NETSEC_IRQ_TX_DONE | \
+						 NETSEC_IRQ_TIMEUP)
+
+#define NETSEC_MODE_TRANS_COMP_IRQ_N2T		BIT(20)
+#define NETSEC_MODE_TRANS_COMP_IRQ_T2N		BIT(19)
+
+#define NETSEC_DESC_MIN				2
+#define NETSEC_DESC_MAX				2047
+#define NETSEC_INT_PKTCNT_MAX			2047
+
+#define NETSEC_FLOW_START_TH_MAX		95
+#define NETSEC_FLOW_STOP_TH_MAX			95
+#define NETSEC_FLOW_PAUSE_TIME_MIN		5
+
+#define NETSEC_CLK_EN_REG_DOM_ALL		0x3f
+
+#define NETSEC_REG_TOP_STATUS			0x80
+#define NETSEC_REG_TOP_INTEN			0x81
+#define NETSEC_REG_INTEN_SET			0x8d
+#define NETSEC_REG_INTEN_CLR			0x8e
+#define NETSEC_REG_NRM_TX_STATUS		0x100
+#define NETSEC_REG_NRM_TX_INTEN			0x101
+#define NETSEC_REG_NRM_TX_INTEN_SET		0x10a
+#define NETSEC_REG_NRM_TX_INTEN_CLR		0x10b
+#define NETSEC_REG_NRM_RX_STATUS		0x110
+#define NETSEC_REG_NRM_RX_INTEN			0x111
+#define NETSEC_REG_NRM_RX_INTEN_SET		0x11a
+#define NETSEC_REG_NRM_RX_INTEN_CLR		0x11b
+#define NETSEC_REG_RESERVED_RX_DESC_START	0x122
+#define NETSEC_REG_RESERVED_TX_DESC_START	0x132
+#define NETSEC_REG_CLK_EN			0x40
+#define NETSEC_REG_SOFT_RST			0x41
+#define NETSEC_REG_PKT_CMD_BUF			0x34
+#define NETSEC_REG_PKT_CTRL			0x50
+#define NETSEC_REG_COM_INIT			0x48
+#define NETSEC_REG_DMA_TMR_CTRL			0x83
+#define NETSEC_REG_F_TAIKI_MC_VER		0x8b
+#define NETSEC_REG_F_TAIKI_VER			0x8c
+#define NETSEC_REG_DMA_HM_CTRL			0x85
+#define NETSEC_REG_DMA_MH_CTRL			0x88
+#define NETSEC_REG_ADDR_DIS_CORE		0x86
+#define NETSEC_REG_DMAC_HM_CMD_BUF		0x84
+#define NETSEC_REG_DMAC_MH_CMD_BUF		0x87
+#define NETSEC_REG_NRM_TX_PKTCNT		0x104
+#define NETSEC_REG_NRM_TX_DONE_TXINT_PKTCNT	0x106
+#define NETSEC_REG_NRM_RX_RXINT_PKTCNT		0x116
+#define NETSEC_REG_NRM_TX_TXINT_TMR		0x108
+#define NETSEC_REG_NRM_RX_RXINT_TMR		0x118
+#define NETSEC_REG_NRM_TX_DONE_PKTCNT		0x105
+#define NETSEC_REG_NRM_RX_PKTCNT		0x115
+#define NETSEC_REG_NRM_TX_TMR			0x107
+#define NETSEC_REG_NRM_RX_TMR			0x117
+#define NETSEC_REG_NRM_TX_DESC_START_UP		0x10d
+#define NETSEC_REG_NRM_TX_DESC_START_LW		0x102
+#define NETSEC_REG_NRM_RX_DESC_START_UP		0x11d
+#define NETSEC_REG_NRM_RX_DESC_START_LW		0x112
+#define NETSEC_REG_NRM_TX_CONFIG		0x10c
+#define NETSEC_REG_NRM_RX_CONFIG		0x11c
+#define MAC_REG_DATA				0x470
+#define MAC_REG_CMD				0x471
+#define MAC_REG_FLOW_TH				0x473
+#define MAC_REG_INTF_SEL			0x475
+#define MAC_REG_DESC_INIT			0x47f
+#define MAC_REG_DESC_SOFT_RST			0x481
+#define NETSEC_REG_MODE_TRANS_COMP_STATUS	0x140
+#define GMAC_REG_MCR				0x0000
+#define GMAC_REG_MFFR				0x0004
+#define GMAC_REG_GAR				0x0010
+#define GMAC_REG_GDR				0x0014
+#define GMAC_REG_FCR				0x0018
+#define GMAC_REG_BMR				0x1000
+#define GMAC_REG_RDLAR				0x100c
+#define GMAC_REG_TDLAR				0x1010
+#define GMAC_REG_OMR				0x1018
+
+#define NETSEC_PKT_CTRL_REG_MODE_NRM		BIT(28)
+#define NETSEC_PKT_CTRL_REG_EN_JUMBO		BIT(27)
+#define NETSEC_PKT_CTRL_REG_LOG_CHKSUM_ER	BIT(3)
+#define NETSEC_PKT_CTRL_REG_LOG_HD_INCOMPLETE	BIT(2)
+#define NETSEC_PKT_CTRL_REG_LOG_HD_ER		BIT(1)
+#define NETSEC_PKT_CTRL_REG_DRP_NO_MATCH	BIT(0)
+
+#define NETSEC_CLK_EN_REG_DOM_G			BIT(5)
+#define NETSEC_CLK_EN_REG_DOM_C			BIT(1)
+#define NETSEC_CLK_EN_REG_DOM_D			BIT(0)
+
+#define NETSEC_COM_INIT_REG_DB			BIT(2)
+#define NETSEC_COM_INIT_REG_CLS			BIT(1)
+#define NETSEC_COM_INIT_REG_ALL			(NETSEC_COM_INIT_REG_CLS | \
+						 NETSEC_COM_INIT_REG_DB)
+
+#define NETSEC_SOFT_RST_REG_RESET		0
+#define NETSEC_SOFT_RST_REG_RUN			BIT(31)
+
+#define NETSEC_DMA_CTRL_REG_STOP		1
+#define MH_CTRL__MODE_TRANS			BIT(20)
+
+#define NETSEC_GMAC_CMD_ST_READ			0
+#define NETSEC_GMAC_CMD_ST_WRITE		BIT(28)
+#define NETSEC_GMAC_CMD_ST_BUSY			BIT(31)
+
+#define NETSEC_GMAC_BMR_REG_COMMON		0x00412080
+#define NETSEC_GMAC_BMR_REG_RESET		0x00020181
+#define NETSEC_GMAC_BMR_REG_SWR			0x00000001
+
+#define NETSEC_GMAC_OMR_REG_ST			BIT(13)
+#define NETSEC_GMAC_OMR_REG_SR			BIT(1)
+
+#define NETSEC_GMAC_MCR_REG_IBN			BIT(30)
+#define NETSEC_GMAC_MCR_REG_CST			BIT(25)
+#define NETSEC_GMAC_MCR_REG_JE			BIT(20)
+#define NETSEC_MCR_PS				BIT(15)
+#define NETSEC_GMAC_MCR_REG_FES			BIT(14)
+#define NETSEC_GMAC_MCR_REG_FULL_DUPLEX_COMMON	0x0000280c
+#define NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON	0x0001a00c
+
+#define NETSEC_FCR_RFE				BIT(2)
+#define NETSEC_FCR_TFE				BIT(1)
+
+#define NETSEC_GMAC_GAR_REG_GW			BIT(1)
+#define NETSEC_GMAC_GAR_REG_GB			BIT(0)
+
+#define NETSEC_GMAC_GAR_REG_SHIFT_PA		11
+#define NETSEC_GMAC_GAR_REG_SHIFT_GR		6
+#define GMAC_REG_SHIFT_CR_GAR			2
+
+#define NETSEC_GMAC_GAR_REG_CR_25_35_MHZ	2
+#define NETSEC_GMAC_GAR_REG_CR_35_60_MHZ	3
+#define NETSEC_GMAC_GAR_REG_CR_60_100_MHZ	0
+#define NETSEC_GMAC_GAR_REG_CR_100_150_MHZ	1
+#define NETSEC_GMAC_GAR_REG_CR_150_250_MHZ	4
+#define NETSEC_GMAC_GAR_REG_CR_250_300_MHZ	5
+
+#define NETSEC_GMAC_RDLAR_REG_COMMON		0x18000
+#define NETSEC_GMAC_TDLAR_REG_COMMON		0x1c000
+
+#define NETSEC_REG_NETSEC_VER_F_TAIKI		0x50000
+
+#define NETSEC_REG_DESC_RING_CONFIG_CFG_UP	BIT(31)
+#define NETSEC_REG_DESC_RING_CONFIG_CH_RST	BIT(30)
+#define NETSEC_REG_DESC_TMR_MODE		4
+#define NETSEC_REG_DESC_ENDIAN			0
+
+#define NETSEC_MAC_DESC_SOFT_RST_SOFT_RST	1
+#define NETSEC_MAC_DESC_INIT_REG_INIT		1
+
+#define NETSEC_EEPROM_MAC_ADDRESS		0x00
+#define NETSEC_EEPROM_HM_ME_ADDRESS_H		0x08
+#define NETSEC_EEPROM_HM_ME_ADDRESS_L		0x0C
+#define NETSEC_EEPROM_HM_ME_SIZE		0x10
+#define NETSEC_EEPROM_MH_ME_ADDRESS_H		0x14
+#define NETSEC_EEPROM_MH_ME_ADDRESS_L		0x18
+#define NETSEC_EEPROM_MH_ME_SIZE		0x1C
+#define NETSEC_EEPROM_PKT_ME_ADDRESS		0x20
+#define NETSEC_EEPROM_PKT_ME_SIZE		0x24
+
+/* this is used to interpret a register layout */
+struct netsec_pkt_ctrlaram {
+	u8 log_chksum_er_flag:1;
+	u8 log_hd_imcomplete_flag:1;
+	u8 log_hd_er_flag:1;
+};
+
+struct netsec_param {
+	struct netsec_pkt_ctrlaram pkt_ctrlaram;
+	bool use_jumbo_pkt_flag;
+};
+
+struct netsec_mac_mode {
+	u16 flow_start_th;
+	u16 flow_stop_th;
+	u16 pause_time;
+	bool flow_ctrl_enable_flag;
+};
+
+struct netsec_desc_ring {
+	spinlock_t spinlock_desc; /* protect descriptor access */
+	phys_addr_t desc_phys;
+	struct netsec_frag_info *frag;
+	struct sk_buff **priv;
+	void *ring_vaddr;
+	enum netsec_rings id;
+	int len;
+	u16 tx_done_num;
+	u16 rx_num;
+	u16 head;
+	u16 tail;
+	bool running;
+	bool full;
+};
+
+struct netsec_frag_info {
+	dma_addr_t dma_addr;
+	void *addr;
+	u16 len;
+};
+
+struct netsec_priv {
+	struct netsec_desc_ring desc_ring[NETSEC_RING_MAX + 1];
+	struct ethtool_coalesce et_coalesce;
+	struct netsec_mac_mode mac_mode;
+	struct netsec_param param;
+	struct napi_struct napi;
+	phy_interface_t phy_interface;
+	spinlock_t tx_queue_lock; /* protect transmit queue */
+	struct netsec_frag_info tx_info[MAX_SKB_FRAGS];
+	struct net_device *ndev;
+	struct device_node *phy_np;
+	struct phy_device *phydev;
+	struct mii_bus *mii_bus;
+	void __iomem *ioaddr;
+	const void *eeprom_base;
+	struct device *dev;
+	struct clk *clk[3];
+	u32 rx_pkt_buf_len;
+	u32 msg_enable;
+	u32 freq;
+	int actual_link_speed;
+	int clock_count;
+	bool rx_cksum_offload_flag;
+	bool actual_duplex;
+	bool irq_registered;
+};
+
+struct netsec_tx_de {
+	u32 attr;
+	u32 data_buf_addr_up;
+	u32 data_buf_addr_lw;
+	u32 buf_len_info;
+};
+
+struct netsec_rx_de {
+	u32 attr;
+	u32 data_buf_addr_up;
+	u32 data_buf_addr_lw;
+	u32 buf_len_info;
+};
+
+struct netsec_tx_pkt_ctrl {
+	u16 tcp_seg_len;
+	bool tcp_seg_offload_flag;
+	bool cksum_offload_flag;
+};
+
+struct netsec_rx_pkt_info {
+	int rx_cksum_result;
+	int err_code;
+	bool is_fragmented;
+	bool err_flag;
+};
+
+struct netsec_skb_cb {
+	bool is_rx;
+};
+
+static inline void netsec_writel(struct netsec_priv *priv,
+				 u32 reg_addr, u32 val)
+{
+	writel_relaxed(val, priv->ioaddr + (reg_addr << 2));
+}
+
+static inline u32 netsec_readl(struct netsec_priv *priv, u32 reg_addr)
+{
+	return readl_relaxed(priv->ioaddr + (reg_addr << 2));
+}
+
+static inline void netsec_mark_skb_type(struct sk_buff *skb, bool is_rx)
+{
+	struct netsec_skb_cb *cb = (struct netsec_skb_cb *)skb->cb;
+
+	cb->is_rx = is_rx;
+}
+
+static inline bool skb_is_rx(struct sk_buff *skb)
+{
+	struct netsec_skb_cb *cb = (struct netsec_skb_cb *)skb->cb;
+
+	return cb->is_rx;
+}
+
+extern const struct net_device_ops netsec_netdev_ops;
+extern const struct ethtool_ops netsec_ethtool_ops;
+
+int netsec_start_gmac(struct netsec_priv *priv);
+int netsec_stop_gmac(struct netsec_priv *priv);
+int netsec_mii_register(struct netsec_priv *priv);
+void netsec_mii_unregister(struct netsec_priv *priv);
+int netsec_start_desc_ring(struct netsec_priv *priv, enum netsec_rings id);
+void netsec_stop_desc_ring(struct netsec_priv *priv, enum netsec_rings id);
+u16 netsec_get_rx_num(struct netsec_priv *priv);
+u16 netsec_get_tx_avail_num(struct netsec_priv *priv);
+int netsec_clean_tx_desc_ring(struct netsec_priv *priv);
+int netsec_clean_rx_desc_ring(struct netsec_priv *priv);
+int netsec_set_tx_pkt_data(struct netsec_priv *priv,
+			   const struct netsec_tx_pkt_ctrl *tx_ctrl,
+			   u8 count_frags, const struct netsec_frag_info *info,
+			   struct sk_buff *skb);
+int netsec_get_rx_pkt_data(struct netsec_priv *priv,
+			   struct netsec_rx_pkt_info *rxpi,
+			   struct netsec_frag_info *frag, u16 *len,
+			   struct sk_buff **skb);
+void netsec_ring_irq_enable(struct netsec_priv *priv,
+			    enum netsec_rings id, u32 i);
+void netsec_ring_irq_disable(struct netsec_priv *priv,
+			     enum netsec_rings id, u32 i);
+int netsec_alloc_desc_ring(struct netsec_priv *priv, enum netsec_rings id);
+void netsec_free_desc_ring(struct netsec_priv *priv,
+			   struct netsec_desc_ring *desc);
+int netsec_setup_rx_desc(struct netsec_priv *priv,
+			 struct netsec_desc_ring *desc);
+int netsec_netdev_napi_poll(struct napi_struct *napi_p, int budget);
+
+#endif /* NETSEC_INTERNAL_H */
diff --git a/drivers/net/ethernet/socionext/netsec/netsec_desc_ring_access.c b/drivers/net/ethernet/socionext/netsec/netsec_desc_ring_access.c
new file mode 100644
index 0000000..a4e56cd
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec_desc_ring_access.c
@@ -0,0 +1,623 @@
+/**
+ * drivers/net/ethernet/socionext/netsec/netsec_desc_ring_access.c
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+
+#include "netsec.h"
+
+static const u32 ads_irq_set[] = {
+	NETSEC_REG_NRM_TX_INTEN_SET,
+	NETSEC_REG_NRM_RX_INTEN_SET,
+};
+
+static const u32 desc_ring_irq_inten_clr_reg_addr[] = {
+	NETSEC_REG_NRM_TX_INTEN_CLR,
+	NETSEC_REG_NRM_RX_INTEN_CLR,
+};
+
+static const u32 int_tmr_reg_addr[] = {
+	NETSEC_REG_NRM_TX_TXINT_TMR,
+	NETSEC_REG_NRM_RX_RXINT_TMR,
+};
+
+static const u32 rx_pkt_cnt_reg_addr[] = {
+	0,
+	NETSEC_REG_NRM_RX_PKTCNT,
+};
+
+static const u32 tx_pkt_cnt_reg_addr[] = {
+	NETSEC_REG_NRM_TX_PKTCNT,
+	0,
+};
+
+static const u32 int_pkt_cnt_reg_addr[] = {
+	NETSEC_REG_NRM_TX_DONE_TXINT_PKTCNT,
+	NETSEC_REG_NRM_RX_RXINT_PKTCNT,
+};
+
+static const u32 tx_done_pkt_addr[] = {
+	NETSEC_REG_NRM_TX_DONE_PKTCNT,
+	0,
+};
+
+static const u32 netsec_desc_mask[] = {
+	[NETSEC_RING_TX] = NETSEC_GMAC_OMR_REG_ST,
+	[NETSEC_RING_RX] = NETSEC_GMAC_OMR_REG_SR
+};
+
+void netsec_ring_irq_enable(struct netsec_priv *priv,
+			    enum netsec_rings id, u32 irqf)
+{
+	netsec_writel(priv, ads_irq_set[id], irqf);
+}
+
+void netsec_ring_irq_disable(struct netsec_priv *priv,
+			     enum netsec_rings id, u32 irqf)
+{
+	netsec_writel(priv, desc_ring_irq_inten_clr_reg_addr[id], irqf);
+}
+
+static struct sk_buff *alloc_rx_pkt_buf(struct netsec_priv *priv,
+					struct netsec_frag_info *info)
+{
+	struct sk_buff *skb;
+
+	if (device_get_dma_attr(priv->dev) == DEV_DMA_COHERENT) {
+		skb = netdev_alloc_skb_ip_align(priv->ndev, info->len);
+	} else {
+		info->len = L1_CACHE_ALIGN(info->len);
+		skb = netdev_alloc_skb(priv->ndev, info->len);
+	}
+	if (!skb)
+		return NULL;
+
+	netsec_mark_skb_type(skb, NETSEC_RING_RX);
+	info->addr = skb->data;
+	info->dma_addr = dma_map_single(priv->dev, info->addr, info->len,
+					DMA_FROM_DEVICE);
+	if (dma_mapping_error(priv->dev, info->dma_addr)) {
+		dev_kfree_skb(skb);
+		return NULL;
+	}
+	return skb;
+}
+
+int netsec_alloc_desc_ring(struct netsec_priv *priv, enum netsec_rings id)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[id];
+	int ret = 0;
+
+	desc->id = id;
+	desc->len = sizeof(struct netsec_tx_de); /* rx and tx desc same size */
+
+	spin_lock_init(&desc->spinlock_desc);
+
+	desc->ring_vaddr = dma_zalloc_coherent(priv->dev, desc->len * DESC_NUM,
+					       &desc->desc_phys, GFP_KERNEL);
+	if (!desc->ring_vaddr) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	desc->frag = kcalloc(DESC_NUM, sizeof(*desc->frag), GFP_KERNEL);
+	if (!desc->frag) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	desc->priv = kcalloc(DESC_NUM, sizeof(struct sk_buff *), GFP_KERNEL);
+	if (!desc->priv) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	return 0;
+
+err:
+	netsec_free_desc_ring(priv, desc);
+
+	return ret;
+}
+
+static void netsec_uninit_pkt_desc_ring(struct netsec_priv *priv,
+					struct netsec_desc_ring *desc)
+{
+	struct netsec_frag_info *frag;
+	u32 status;
+	u16 idx;
+
+	for (idx = 0; idx < DESC_NUM; idx++) {
+		frag = &desc->frag[idx];
+		if (!frag->addr)
+			continue;
+
+		status = *(u32 *)(desc->ring_vaddr + desc->len * idx);
+
+		dma_unmap_single(priv->dev, frag->dma_addr, frag->len,
+				 skb_is_rx(desc->priv[idx]) ? DMA_FROM_DEVICE :
+							      DMA_TO_DEVICE);
+		if ((status >> NETSEC_TX_LAST) & 1)
+			dev_kfree_skb(desc->priv[idx]);
+	}
+
+	memset(desc->frag, 0, sizeof(struct netsec_frag_info) * DESC_NUM);
+	memset(desc->priv, 0, sizeof(struct sk_buff *) * DESC_NUM);
+	memset(desc->ring_vaddr, 0, desc->len * DESC_NUM);
+}
+
+void netsec_free_desc_ring(struct netsec_priv *priv,
+			   struct netsec_desc_ring *desc)
+{
+	if (desc->ring_vaddr && desc->frag && desc->priv)
+		netsec_uninit_pkt_desc_ring(priv, desc);
+
+	if (desc->ring_vaddr) {
+		dma_free_coherent(priv->dev, desc->len * DESC_NUM,
+				  desc->ring_vaddr, desc->desc_phys);
+		desc->ring_vaddr = NULL;
+	}
+	kfree(desc->frag);
+	desc->frag = NULL;
+	kfree(desc->priv);
+	desc->priv = NULL;
+}
+
+static void netsec_set_rx_de(struct netsec_priv *priv,
+			     struct netsec_desc_ring *desc, u16 idx,
+			     const struct netsec_frag_info *info,
+			     struct sk_buff *skb)
+{
+	struct netsec_rx_de *de = desc->ring_vaddr + desc->len * idx;
+	u32 attr = (1 << NETSEC_RX_PKT_OWN_FIELD) |
+		   (1 << NETSEC_RX_PKT_FS_FIELD) |
+		   (1 << NETSEC_RX_PKT_LS_FIELD);
+
+	if (idx == DESC_NUM - 1)
+		attr |= (1 << NETSEC_RX_PKT_LD_FIELD);
+
+	de->data_buf_addr_up = upper_32_bits(info->dma_addr);
+	de->data_buf_addr_lw = lower_32_bits(info->dma_addr);
+	de->buf_len_info = info->len;
+	/* desc->attr makes the descriptor live, so it must be physically
+	 * written last after the rest of the descriptor body is already there
+	 */
+	dma_wmb();
+	de->attr = attr;
+
+	desc->frag[idx].dma_addr = info->dma_addr;
+	desc->frag[idx].addr = info->addr;
+	desc->frag[idx].len = info->len;
+
+	desc->priv[idx] = skb;
+}
+
+int netsec_setup_rx_desc(struct netsec_priv *priv,
+			 struct netsec_desc_ring *desc)
+{
+	struct netsec_frag_info info;
+	struct sk_buff *skb;
+	int n;
+
+	info.len = priv->rx_pkt_buf_len;
+
+	for (n = 0; n < DESC_NUM; n++) {
+		skb = alloc_rx_pkt_buf(priv, &info);
+		if (!skb) {
+			netsec_uninit_pkt_desc_ring(priv, desc);
+			return -ENOMEM;
+		}
+		netsec_set_rx_de(priv, desc, n, &info, skb);
+	}
+
+	return 0;
+}
+
+static void netsec_set_tx_desc_entry(struct netsec_priv *priv,
+				     struct netsec_desc_ring *desc,
+				     const struct netsec_tx_pkt_ctrl *tx_ctrl,
+				     bool first_flag, bool last_flag,
+				     const struct netsec_frag_info *frag,
+				     struct sk_buff *skb)
+{
+	struct netsec_tx_de *tx_desc_entry;
+	int idx = desc->head;
+	u32 attr;
+
+	tx_desc_entry = desc->ring_vaddr + (desc->len * idx);
+
+	attr = (1 << NETSEC_TX_SHIFT_OWN_FIELD) |
+	       (desc->id << NETSEC_TX_SHIFT_DRID_FIELD) |
+	       (1 << NETSEC_TX_SHIFT_PT_FIELD) |
+	       (NETSEC_RING_GMAC << NETSEC_TX_SHIFT_TDRID_FIELD) |
+	       (first_flag << NETSEC_TX_SHIFT_FS_FIELD) |
+	       (last_flag << NETSEC_TX_LAST) |
+	       (tx_ctrl->cksum_offload_flag << NETSEC_TX_SHIFT_CO) |
+	       (tx_ctrl->tcp_seg_offload_flag << NETSEC_TX_SHIFT_SO) |
+	       (1 << NETSEC_TX_SHIFT_TRS_FIELD);
+	if (idx == DESC_NUM - 1)
+		attr |= (1 << NETSEC_TX_SHIFT_LD_FIELD);
+
+	tx_desc_entry->data_buf_addr_up = upper_32_bits(frag->dma_addr);
+	tx_desc_entry->data_buf_addr_lw = lower_32_bits(frag->dma_addr);
+	tx_desc_entry->buf_len_info = (tx_ctrl->tcp_seg_len << 16) | frag->len;
+	/* desc->attr makes the descriptor live, so it must be physically
+	 * written last after the rest of the descriptor body is already there
+	 */
+	dma_wmb();
+	tx_desc_entry->attr = attr;
+
+	desc->frag[idx] = *frag;
+	desc->priv[idx] = skb;
+}
+
+static void netsec_get_rx_de(struct netsec_priv *priv,
+			     struct netsec_desc_ring *desc, u16 idx,
+			     struct netsec_rx_pkt_info *rxpi,
+			     struct netsec_frag_info *frag, u16 *len,
+			     struct sk_buff **skb)
+{
+	struct netsec_rx_de de = {};
+
+	*rxpi = (struct netsec_rx_pkt_info){};
+	memcpy(&de, desc->ring_vaddr + desc->len * idx, desc->len);
+
+	dev_dbg(priv->dev, "%08x\n", *(u32 *)&de);
+	*len = de.buf_len_info >> 16;
+
+	rxpi->is_fragmented = (de.attr >> NETSEC_RX_PKT_FR_FIELD) & 1;
+	rxpi->err_flag = (de.attr >> NETSEC_RX_PKT_ER_FIELD) & 1;
+	rxpi->rx_cksum_result = (de.attr >> NETSEC_RX_PKT_CO_FIELD) & 3;
+	rxpi->err_code = (de.attr >> NETSEC_RX_PKT_ERR_FIELD) &
+							NETSEC_RX_PKT_ERR_MASK;
+	*frag = desc->frag[idx];
+	*skb = desc->priv[idx];
+}
+
+static void netsec_inc_desc_head_idx(struct netsec_priv *priv,
+				     struct netsec_desc_ring *desc, u16 inc)
+{
+	u32 sum;
+
+	sum = desc->head + inc;
+
+	if (sum >= DESC_NUM)
+		sum -= DESC_NUM;
+
+	desc->head = sum;
+	desc->full = desc->head == desc->tail;
+}
+
+static void netsec_inc_desc_tail_idx(struct netsec_priv *priv,
+				     struct netsec_desc_ring *desc)
+{
+	u32 sum;
+
+	sum = desc->tail + 1;
+
+	if (sum >= DESC_NUM)
+		sum -= DESC_NUM;
+
+	desc->tail = sum;
+	desc->full = false;
+}
+
+static u16 netsec_get_tx_avail_num_sub(struct netsec_priv *priv,
+				       const struct netsec_desc_ring *desc)
+{
+	if (desc->full)
+		return 0;
+
+	if (desc->tail > desc->head)
+		return desc->tail - desc->head;
+
+	return DESC_NUM + desc->tail - desc->head;
+}
+
+static u16 netsec_get_tx_done_num_sub(struct netsec_priv *priv,
+				      struct netsec_desc_ring *desc)
+{
+	desc->tx_done_num += netsec_readl(priv, tx_done_pkt_addr[desc->id]);
+
+	return desc->tx_done_num;
+}
+
+static int netsec_set_irq_coalesce_param(struct netsec_priv *priv,
+					 enum netsec_rings id)
+{
+	int max_frames, tmr;
+
+	switch (id) {
+	case NETSEC_RING_TX:
+		max_frames = priv->et_coalesce.tx_max_coalesced_frames;
+		tmr = priv->et_coalesce.tx_coalesce_usecs;
+		break;
+	case NETSEC_RING_RX:
+		max_frames = priv->et_coalesce.rx_max_coalesced_frames;
+		tmr = priv->et_coalesce.rx_coalesce_usecs;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	netsec_writel(priv, int_pkt_cnt_reg_addr[id], max_frames);
+	netsec_writel(priv, int_tmr_reg_addr[id], ((tmr != 0) << 31) | tmr);
+
+	return 0;
+}
+
+int netsec_start_desc_ring(struct netsec_priv *priv, enum netsec_rings id)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[id];
+	int ret = 0;
+
+	spin_lock_bh(&desc->spinlock_desc);
+
+	if (desc->running) {
+		ret = -EBUSY;
+		goto err;
+	}
+
+	switch (desc->id) {
+	case NETSEC_RING_RX:
+		netsec_writel(priv, ads_irq_set[id], NETSEC_IRQ_RCV);
+		break;
+	case NETSEC_RING_TX:
+		netsec_writel(priv, ads_irq_set[id], NETSEC_IRQ_EMPTY);
+		break;
+	}
+
+	netsec_set_irq_coalesce_param(priv, desc->id);
+	desc->running = true;
+
+err:
+	spin_unlock_bh(&desc->spinlock_desc);
+
+	return ret;
+}
+
+void netsec_stop_desc_ring(struct netsec_priv *priv, enum netsec_rings id)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[id];
+
+	spin_lock_bh(&desc->spinlock_desc);
+	if (desc->running)
+		netsec_writel(priv, desc_ring_irq_inten_clr_reg_addr[id],
+			      NETSEC_IRQ_RCV | NETSEC_IRQ_EMPTY |
+			      NETSEC_IRQ_SND);
+
+	desc->running = false;
+	spin_unlock_bh(&desc->spinlock_desc);
+}
+
+u16 netsec_get_rx_num(struct netsec_priv *priv)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[NETSEC_RING_RX];
+	u32 result;
+
+	spin_lock(&desc->spinlock_desc);
+	if (desc->running) {
+		result = netsec_readl(priv,
+				      rx_pkt_cnt_reg_addr[NETSEC_RING_RX]);
+		desc->rx_num += result;
+		if (result)
+			netsec_inc_desc_head_idx(priv, desc, result);
+	}
+	spin_unlock(&desc->spinlock_desc);
+
+	return desc->rx_num;
+}
+
+u16 netsec_get_tx_avail_num(struct netsec_priv *priv)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[NETSEC_RING_TX];
+	u16 result;
+
+	spin_lock(&desc->spinlock_desc);
+
+	if (!desc->running) {
+		netif_err(priv, drv, priv->ndev,
+			  "%s: not running tx desc\n", __func__);
+		result = 0;
+		goto err;
+	}
+
+	result = netsec_get_tx_avail_num_sub(priv, desc);
+
+err:
+	spin_unlock(&desc->spinlock_desc);
+
+	return result;
+}
+
+int netsec_clean_tx_desc_ring(struct netsec_priv *priv)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[NETSEC_RING_TX];
+	unsigned int pkts = 0, bytes = 0;
+	struct netsec_frag_info *frag;
+	struct netsec_tx_de *entry;
+	bool is_last;
+
+	spin_lock(&desc->spinlock_desc);
+
+	netsec_get_tx_done_num_sub(priv, desc);
+
+	while ((desc->tail != desc->head || desc->full) && desc->tx_done_num) {
+		frag = &desc->frag[desc->tail];
+		entry = desc->ring_vaddr + desc->len * desc->tail;
+		is_last = (entry->attr >> NETSEC_TX_LAST) & 1;
+
+		dma_unmap_single(priv->dev, frag->dma_addr, frag->len,
+				 DMA_TO_DEVICE);
+		if (is_last) {
+			pkts++;
+			bytes += desc->priv[desc->tail]->len;
+			dev_kfree_skb(desc->priv[desc->tail]);
+		}
+		*frag = (struct netsec_frag_info){};
+		netsec_inc_desc_tail_idx(priv, desc);
+
+		if (is_last)
+			desc->tx_done_num--;
+	}
+
+	spin_unlock(&desc->spinlock_desc);
+
+	priv->ndev->stats.tx_packets += pkts;
+	priv->ndev->stats.tx_bytes += bytes;
+
+	netdev_completed_queue(priv->ndev, pkts, bytes);
+
+	return 0;
+}
+
+int netsec_clean_rx_desc_ring(struct netsec_priv *priv)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[NETSEC_RING_RX];
+
+	spin_lock(&desc->spinlock_desc);
+
+	while (desc->full || (desc->tail != desc->head)) {
+		netsec_set_rx_de(priv, desc, desc->tail,
+				 &desc->frag[desc->tail],
+				 desc->priv[desc->tail]);
+		desc->rx_num--;
+		netsec_inc_desc_tail_idx(priv, desc);
+	}
+
+	spin_unlock(&desc->spinlock_desc);
+
+	return 0;
+}
+
+int netsec_set_tx_pkt_data(struct netsec_priv *priv,
+			   const struct netsec_tx_pkt_ctrl *tx_ctrl,
+			   u8 count_frags, const struct netsec_frag_info *info,
+			   struct sk_buff *skb)
+{
+	struct netsec_desc_ring *desc;
+	u32 sum_len = 0;
+	unsigned int i;
+	int ret = 0;
+
+	if (tx_ctrl->tcp_seg_offload_flag && !tx_ctrl->cksum_offload_flag)
+		return -EINVAL;
+
+	if (tx_ctrl->tcp_seg_offload_flag) {
+		if (tx_ctrl->tcp_seg_len == 0)
+			return -EINVAL;
+
+		if (priv->param.use_jumbo_pkt_flag) {
+			if (tx_ctrl->tcp_seg_len > NETSEC_TCP_JUMBO_SEG_LEN_MAX)
+				return -EINVAL;
+		} else {
+			if (tx_ctrl->tcp_seg_len > NETSEC_TCP_SEG_LEN_MAX)
+				return -EINVAL;
+		}
+	} else {
+		if (tx_ctrl->tcp_seg_len)
+			return -EINVAL;
+	}
+
+	if (!count_frags)
+		return -ERANGE;
+
+	for (i = 0; i < count_frags; i++) {
+		if ((info[i].len == 0) || (info[i].len > 0xffff)) {
+			netif_err(priv, drv, priv->ndev,
+				  "%s: bad info len\n", __func__);
+			return -EINVAL;
+		}
+		sum_len += info[i].len;
+	}
+
+	if (!tx_ctrl->tcp_seg_offload_flag) {
+		if (priv->param.use_jumbo_pkt_flag) {
+			if (sum_len > NETSEC_MAX_TX_JUMBO_PKT_LEN)
+				return -EINVAL;
+		} else {
+			if (sum_len > NETSEC_MAX_TX_PKT_LEN)
+				return -EINVAL;
+		}
+	}
+
+	desc = &priv->desc_ring[NETSEC_RING_TX];
+	spin_lock(&desc->spinlock_desc);
+
+	if (!desc->running) {
+		ret = -ENODEV;
+		goto end;
+	}
+
+	dma_rmb(); /* we need to see a consistent view of pending tx count */
+	if (count_frags > netsec_get_tx_avail_num_sub(priv, desc)) {
+		ret = -EBUSY;
+		goto end;
+	}
+
+	for (i = 0; i < count_frags; i++) {
+		netsec_set_tx_desc_entry(priv, desc, tx_ctrl, i == 0,
+					 i == count_frags - 1, &info[i], skb);
+		netsec_inc_desc_head_idx(priv, desc, 1);
+	}
+
+	dma_wmb(); /* ensure the descriptor is flushed */
+	netsec_writel(priv, tx_pkt_cnt_reg_addr[NETSEC_RING_TX], 1);
+
+end:
+	spin_unlock(&desc->spinlock_desc);
+
+	return ret;
+}
+
+int netsec_get_rx_pkt_data(struct netsec_priv *priv,
+			   struct netsec_rx_pkt_info *rxpi,
+			   struct netsec_frag_info *frag, u16 *len,
+			   struct sk_buff **skb)
+{
+	struct netsec_desc_ring *desc = &priv->desc_ring[NETSEC_RING_RX];
+	struct netsec_frag_info info;
+	struct sk_buff *tmp_skb;
+	int ret = 0;
+
+	spin_lock(&desc->spinlock_desc);
+
+	if (desc->rx_num == 0) {
+		dev_err(priv->dev, "%s 0 len rx\n", __func__);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	info.len = priv->rx_pkt_buf_len;
+	dma_rmb(); /* we need to ensure we only see current data in descriptor */
+	tmp_skb = alloc_rx_pkt_buf(priv, &info);
+	if (!tmp_skb) {
+		netsec_set_rx_de(priv, desc, desc->tail,
+				 &desc->frag[desc->tail],
+				 desc->priv[desc->tail]);
+		ret = -ENOMEM;
+	} else {
+		netsec_get_rx_de(priv, desc, desc->tail, rxpi, frag, len, skb);
+		netsec_set_rx_de(priv, desc, desc->tail, &info, tmp_skb);
+	}
+
+	netsec_inc_desc_tail_idx(priv, desc);
+	desc->rx_num--;
+
+err:
+	spin_unlock(&desc->spinlock_desc);
+
+	return ret;
+}
diff --git a/drivers/net/ethernet/socionext/netsec/netsec_ethtool.c b/drivers/net/ethernet/socionext/netsec/netsec_ethtool.c
new file mode 100644
index 0000000..45830fe
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec_ethtool.c
@@ -0,0 +1,78 @@
+/**
+ * drivers/net/ethernet/socionext/netsec/netsec_ethtool.c
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+
+#include "netsec.h"
+
+static void netsec_et_get_drvinfo(struct net_device *net_device,
+				  struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, "netsec", sizeof(info->driver));
+	strlcpy(info->bus_info, dev_name(net_device->dev.parent),
+		sizeof(info->bus_info));
+}
+
+static int netsec_et_get_coalesce(struct net_device *net_device,
+				  struct ethtool_coalesce *et_coalesce)
+{
+	struct netsec_priv *priv = netdev_priv(net_device);
+
+	*et_coalesce = priv->et_coalesce;
+
+	return 0;
+}
+
+static int netsec_et_set_coalesce(struct net_device *net_device,
+				  struct ethtool_coalesce *et_coalesce)
+{
+	struct netsec_priv *priv = netdev_priv(net_device);
+
+	if (et_coalesce->rx_max_coalesced_frames > NETSEC_INT_PKTCNT_MAX)
+		return -EINVAL;
+	if (et_coalesce->tx_max_coalesced_frames > NETSEC_INT_PKTCNT_MAX)
+		return -EINVAL;
+	if (!et_coalesce->rx_max_coalesced_frames)
+		return -EINVAL;
+	if (!et_coalesce->tx_max_coalesced_frames)
+		return -EINVAL;
+
+	priv->et_coalesce = *et_coalesce;
+
+	return 0;
+}
+
+static u32 netsec_et_get_msglevel(struct net_device *dev)
+{
+	struct netsec_priv *priv = netdev_priv(dev);
+
+	return priv->msg_enable;
+}
+
+static void netsec_et_set_msglevel(struct net_device *dev, u32 datum)
+{
+	struct netsec_priv *priv = netdev_priv(dev);
+
+	priv->msg_enable = datum;
+}
+
+const struct ethtool_ops netsec_ethtool_ops = {
+	.get_drvinfo		= netsec_et_get_drvinfo,
+	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
+	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+	.get_link		= ethtool_op_get_link,
+	.get_coalesce		= netsec_et_get_coalesce,
+	.set_coalesce		= netsec_et_set_coalesce,
+	.get_msglevel		= netsec_et_get_msglevel,
+	.set_msglevel		= netsec_et_set_msglevel,
+};
diff --git a/drivers/net/ethernet/socionext/netsec/netsec_gmac_access.c b/drivers/net/ethernet/socionext/netsec/netsec_gmac_access.c
new file mode 100644
index 0000000..94e9b7f
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec_gmac_access.c
@@ -0,0 +1,330 @@
+/**
+ * drivers/net/ethernet/socionext/netsec/netsec_gmac_access.c
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+#include "netsec.h"
+
+#define TIMEOUT_SPINS_MAC		1000
+#define TIMEOUT_SECONDARY_MS_MAC	100
+
+static u32 netsec_clk_type(u32 freq)
+{
+	if (freq < 35 * NETSEC_CLK_MHZ)
+		return NETSEC_GMAC_GAR_REG_CR_25_35_MHZ;
+	if (freq < 60 * NETSEC_CLK_MHZ)
+		return NETSEC_GMAC_GAR_REG_CR_35_60_MHZ;
+	if (freq < 100 * NETSEC_CLK_MHZ)
+		return NETSEC_GMAC_GAR_REG_CR_60_100_MHZ;
+	if (freq < 150 * NETSEC_CLK_MHZ)
+		return NETSEC_GMAC_GAR_REG_CR_100_150_MHZ;
+	if (freq < 250 * NETSEC_CLK_MHZ)
+		return NETSEC_GMAC_GAR_REG_CR_150_250_MHZ;
+
+	return NETSEC_GMAC_GAR_REG_CR_250_300_MHZ;
+}
+
+static int netsec_wait_while_busy(struct netsec_priv *priv, u32 addr, u32 mask)
+{
+	u32 timeout = TIMEOUT_SPINS_MAC;
+
+	while (--timeout && netsec_readl(priv, addr) & mask)
+		cpu_relax();
+	if (timeout)
+		return 0;
+
+	timeout = TIMEOUT_SECONDARY_MS_MAC;
+	while (--timeout && netsec_readl(priv, addr) & mask)
+		usleep_range(1000, 2000);
+
+	if (timeout)
+		return 0;
+
+	netdev_WARN(priv->ndev, "%s: timeout\n", __func__);
+
+	return -ETIMEDOUT;
+}
+
+static int netsec_mac_write(struct netsec_priv *priv, u32 addr, u32 value)
+{
+	netsec_writel(priv, MAC_REG_DATA, value);
+	netsec_writel(priv, MAC_REG_CMD, addr | NETSEC_GMAC_CMD_ST_WRITE);
+	return netsec_wait_while_busy(priv,
+				      MAC_REG_CMD, NETSEC_GMAC_CMD_ST_BUSY);
+}
+
+static int netsec_mac_read(struct netsec_priv *priv, u32 addr, u32 *read)
+{
+	int ret;
+
+	netsec_writel(priv, MAC_REG_CMD, addr | NETSEC_GMAC_CMD_ST_READ);
+	ret = netsec_wait_while_busy(priv,
+				     MAC_REG_CMD, NETSEC_GMAC_CMD_ST_BUSY);
+	if (ret)
+		return ret;
+
+	*read = netsec_readl(priv, MAC_REG_DATA);
+
+	return 0;
+}
+
+static int netsec_mac_wait_while_busy(struct netsec_priv *priv,
+				      u32 addr, u32 mask)
+{
+	u32 timeout = TIMEOUT_SPINS_MAC;
+	int ret, data;
+
+	do {
+		ret = netsec_mac_read(priv, addr, &data);
+		if (ret)
+			break;
+		cpu_relax();
+	} while (--timeout && (data & mask));
+
+	if (timeout)
+		return 0;
+
+	timeout = TIMEOUT_SECONDARY_MS_MAC;
+	do {
+		usleep_range(1000, 2000);
+
+		ret = netsec_mac_read(priv, addr, &data);
+		if (ret)
+			break;
+		cpu_relax();
+	} while (--timeout && (data & mask));
+
+	if (timeout && !ret)
+		return 0;
+
+	netdev_WARN(priv->ndev, "%s: timeout\n", __func__);
+
+	return -ETIMEDOUT;
+}
+
+static int netsec_mac_update_to_phy_state(struct netsec_priv *priv)
+{
+	struct phy_device *phydev = priv->ndev->phydev;
+	u32 value = 0;
+
+	value = phydev->duplex ? NETSEC_GMAC_MCR_REG_FULL_DUPLEX_COMMON :
+				 NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON;
+
+	if (phydev->speed != SPEED_1000)
+		value |= NETSEC_MCR_PS;
+
+	if ((priv->phy_interface != PHY_INTERFACE_MODE_GMII) &&
+	    (phydev->speed == SPEED_100))
+		value |= NETSEC_GMAC_MCR_REG_FES;
+
+	value |= NETSEC_GMAC_MCR_REG_CST | NETSEC_GMAC_MCR_REG_JE;
+
+	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII)
+		value |= NETSEC_GMAC_MCR_REG_IBN;
+
+	if (netsec_mac_write(priv, GMAC_REG_MCR, value))
+		return -ETIMEDOUT;
+
+	priv->actual_link_speed = phydev->speed;
+	priv->actual_duplex = phydev->duplex;
+
+	return 0;
+}
+
+/* NB netsec_start_gmac() only called from adjust_link */
+
+int netsec_start_gmac(struct netsec_priv *priv)
+{
+	struct phy_device *phydev = priv->ndev->phydev;
+	u32 value = 0;
+	int ret;
+
+	if (priv->desc_ring[NETSEC_RING_TX].running &&
+	    priv->desc_ring[NETSEC_RING_RX].running)
+		return 0;
+
+	if (!priv->desc_ring[NETSEC_RING_RX].running &&
+	    !priv->desc_ring[NETSEC_RING_TX].running) {
+		if (phydev->speed != SPEED_1000)
+			value = (NETSEC_GMAC_MCR_REG_CST |
+				 NETSEC_GMAC_MCR_REG_HALF_DUPLEX_COMMON);
+
+		if (netsec_mac_write(priv, GMAC_REG_MCR, value))
+			return -ETIMEDOUT;
+		if (netsec_mac_write(priv, GMAC_REG_BMR,
+				     NETSEC_GMAC_BMR_REG_RESET))
+			return -ETIMEDOUT;
+
+		/* Wait soft reset */
+		usleep_range(1000, 5000);
+
+		ret = netsec_mac_read(priv, GMAC_REG_BMR, &value);
+		if (ret)
+			return ret;
+		if (value & NETSEC_GMAC_BMR_REG_SWR)
+			return -EAGAIN;
+
+		netsec_writel(priv, MAC_REG_DESC_SOFT_RST, 1);
+		if (netsec_wait_while_busy(priv, MAC_REG_DESC_SOFT_RST, 1))
+			return -ETIMEDOUT;
+
+		netsec_writel(priv, MAC_REG_DESC_INIT, 1);
+		if (netsec_wait_while_busy(priv, MAC_REG_DESC_INIT, 1))
+			return -ETIMEDOUT;
+
+		if (netsec_mac_write(priv, GMAC_REG_BMR,
+				     NETSEC_GMAC_BMR_REG_COMMON))
+			return -ETIMEDOUT;
+		if (netsec_mac_write(priv, GMAC_REG_RDLAR,
+				     NETSEC_GMAC_RDLAR_REG_COMMON))
+			return -ETIMEDOUT;
+		if (netsec_mac_write(priv, GMAC_REG_TDLAR,
+				     NETSEC_GMAC_TDLAR_REG_COMMON))
+			return -ETIMEDOUT;
+		if (netsec_mac_write(priv, GMAC_REG_MFFR, 0x80000001))
+			return -ETIMEDOUT;
+
+		ret = netsec_mac_update_to_phy_state(priv);
+		if (ret)
+			return ret;
+
+		if (priv->mac_mode.flow_ctrl_enable_flag) {
+			netsec_writel(priv, MAC_REG_FLOW_TH,
+				      (priv->mac_mode.flow_stop_th << 16) |
+				      priv->mac_mode.flow_start_th);
+			if (netsec_mac_write(priv, GMAC_REG_FCR,
+					     (priv->mac_mode.pause_time << 16) |
+					     NETSEC_FCR_RFE | NETSEC_FCR_TFE))
+				return -ETIMEDOUT;
+		}
+	}
+
+	ret = netsec_mac_read(priv, GMAC_REG_OMR, &value);
+	if (ret)
+		return ret;
+
+	if (!priv->desc_ring[NETSEC_RING_RX].running) {
+		value |= NETSEC_GMAC_OMR_REG_SR;
+		netsec_start_desc_ring(priv, NETSEC_RING_RX);
+	}
+	if (!priv->desc_ring[NETSEC_RING_TX].running) {
+		value |= NETSEC_GMAC_OMR_REG_ST;
+		netsec_start_desc_ring(priv, NETSEC_RING_TX);
+	}
+
+	if (netsec_mac_write(priv, GMAC_REG_OMR, value))
+		return -ETIMEDOUT;
+
+	netsec_writel(priv, NETSEC_REG_INTEN_SET,
+		      NETSEC_IRQ_TX | NETSEC_IRQ_RX);
+
+	return 0;
+}
+
+int netsec_stop_gmac(struct netsec_priv *priv)
+{
+	u32 value;
+	int ret;
+
+	ret = netsec_mac_read(priv, GMAC_REG_OMR, &value);
+	if (ret)
+		return ret;
+
+	if (priv->desc_ring[NETSEC_RING_RX].running) {
+		value &= ~NETSEC_GMAC_OMR_REG_SR;
+		netsec_stop_desc_ring(priv, NETSEC_RING_RX);
+	}
+	if (priv->desc_ring[NETSEC_RING_TX].running) {
+		value &= ~NETSEC_GMAC_OMR_REG_ST;
+		netsec_stop_desc_ring(priv, NETSEC_RING_TX);
+	}
+
+	priv->actual_link_speed = 0;
+	priv->actual_duplex = false;
+
+	return netsec_mac_write(priv, GMAC_REG_OMR, value);
+}
+
+static int netsec_phy_write(struct mii_bus *bus,
+			    int phy_addr, int reg, u16 val)
+{
+	struct netsec_priv *priv = bus->priv;
+
+	if (netsec_mac_write(priv, GMAC_REG_GDR, val))
+		return -ETIMEDOUT;
+	if (netsec_mac_write(priv, GMAC_REG_GAR,
+			     phy_addr << NETSEC_GMAC_GAR_REG_SHIFT_PA |
+			     reg << NETSEC_GMAC_GAR_REG_SHIFT_GR |
+			     NETSEC_GMAC_GAR_REG_GW | NETSEC_GMAC_GAR_REG_GB |
+			     (netsec_clk_type(priv->freq) <<
+			      GMAC_REG_SHIFT_CR_GAR)))
+		return -ETIMEDOUT;
+
+	return netsec_mac_wait_while_busy(priv, GMAC_REG_GAR,
+					  NETSEC_GMAC_GAR_REG_GB);
+}
+
+static int netsec_phy_read(struct mii_bus *bus, int phy_addr, int reg_addr)
+{
+	struct netsec_priv *priv = bus->priv;
+	u32 data;
+	int ret;
+
+	if (netsec_mac_write(priv, GMAC_REG_GAR, NETSEC_GMAC_GAR_REG_GB |
+			     phy_addr << NETSEC_GMAC_GAR_REG_SHIFT_PA |
+			     reg_addr << NETSEC_GMAC_GAR_REG_SHIFT_GR |
+			     (netsec_clk_type(priv->freq) <<
+			      GMAC_REG_SHIFT_CR_GAR)))
+		return -ETIMEDOUT;
+
+	ret = netsec_mac_wait_while_busy(priv, GMAC_REG_GAR,
+					 NETSEC_GMAC_GAR_REG_GB);
+	if (ret)
+		return ret;
+
+	ret = netsec_mac_read(priv, GMAC_REG_GDR, &data);
+	if (ret)
+		return ret;
+
+	return data;
+}
+
+int netsec_mii_register(struct netsec_priv *priv)
+{
+	struct mii_bus *bus = devm_mdiobus_alloc(priv->dev);
+	int ret;
+
+	if (!bus)
+		return -ENOMEM;
+
+	snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(priv->dev));
+	bus->priv = priv;
+	bus->name = "SNI NETSEC MDIO";
+	bus->read = netsec_phy_read;
+	bus->write = netsec_phy_write;
+	bus->parent = priv->dev;
+	priv->mii_bus = bus;
+
+	if (dev_of_node(priv->dev)) {
+		ret = of_mdiobus_register(bus, dev_of_node(priv->dev));
+	} else {
+		/* Mask out all PHYs from auto probing. */
+		bus->phy_mask = ~0;
+		ret = mdiobus_register(bus);
+	}
+	return ret;
+}
+
+void netsec_mii_unregister(struct netsec_priv *priv)
+{
+	mdiobus_unregister(priv->mii_bus);
+}
diff --git a/drivers/net/ethernet/socionext/netsec/netsec_netdev.c b/drivers/net/ethernet/socionext/netsec/netsec_netdev.c
new file mode 100644
index 0000000..e99cf0e
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec_netdev.c
@@ -0,0 +1,540 @@
+/**
+ * drivers/net/ethernet/socionext/netsec/netsec_netdev.c
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/tcp.h>
+#include <net/tcp.h>
+#include <net/ip6_checksum.h>
+#include <linux/pm_runtime.h>
+
+#include "netsec.h"
+
+#define WAIT_FW_RDY_TIMEOUT 50
+
+static const u32 desc_ring_irq_status_reg_addr[] = {
+	NETSEC_REG_NRM_TX_STATUS,
+	NETSEC_REG_NRM_RX_STATUS,
+};
+
+static const u32 desc_ads[] = {
+	NETSEC_REG_NRM_TX_CONFIG,
+	NETSEC_REG_NRM_RX_CONFIG,
+};
+
+static const u32 netsec_desc_start_reg_addr_up[] = {
+	NETSEC_REG_NRM_TX_DESC_START_UP,
+	NETSEC_REG_NRM_RX_DESC_START_UP,
+};
+
+static const u32 netsec_desc_start_reg_addr_lw[] = {
+	NETSEC_REG_NRM_TX_DESC_START_LW,
+	NETSEC_REG_NRM_RX_DESC_START_LW,
+};
+
+static u32 netsec_calc_pkt_ctrl_reg_param(const struct netsec_pkt_ctrlaram
+					*pkt_ctrlaram_p)
+{
+	u32 param = NETSEC_PKT_CTRL_REG_MODE_NRM;
+
+	if (pkt_ctrlaram_p->log_chksum_er_flag)
+		param |= NETSEC_PKT_CTRL_REG_LOG_CHKSUM_ER;
+
+	if (pkt_ctrlaram_p->log_hd_imcomplete_flag)
+		param |= NETSEC_PKT_CTRL_REG_LOG_HD_INCOMPLETE;
+
+	if (pkt_ctrlaram_p->log_hd_er_flag)
+		param |= NETSEC_PKT_CTRL_REG_LOG_HD_ER;
+
+	return param;
+}
+
+static int netsec_netdev_load_ucode_region(struct netsec_priv *priv, u32 reg,
+					   u32 addr_h, u32 addr_l, u32 size)
+{
+	u64 base = (u64)addr_h << 32 | addr_l;
+	__le32 *ucode;
+	u32 i;
+
+	ucode = memremap(base, size * sizeof(u32), MEMREMAP_WT);
+	if (!ucode)
+		return -ENOMEM;
+
+	for (i = 0; i < size; i++)
+		netsec_writel(priv, reg, le32_to_cpu(ucode[i]));
+
+	memunmap(ucode);
+	return 0;
+}
+
+static int netsec_netdev_load_microcode(struct netsec_priv *priv)
+{
+	int err;
+
+	err = netsec_netdev_load_ucode_region(
+		priv, NETSEC_REG_DMAC_HM_CMD_BUF,
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_HM_ME_ADDRESS_H),
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_HM_ME_ADDRESS_L),
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_HM_ME_SIZE));
+	if (err)
+		return err;
+
+	err = netsec_netdev_load_ucode_region(
+		priv, NETSEC_REG_DMAC_MH_CMD_BUF,
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_MH_ME_ADDRESS_H),
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_MH_ME_ADDRESS_L),
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_MH_ME_SIZE));
+	if (err)
+		return err;
+
+	err = netsec_netdev_load_ucode_region(
+		priv, NETSEC_REG_PKT_CMD_BUF,
+		0,
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_PKT_ME_ADDRESS),
+		le32_to_cpup(priv->eeprom_base + NETSEC_EEPROM_PKT_ME_SIZE));
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int netsec_init_hardware(struct netsec_priv *priv)
+{
+	u32 value;
+	int err;
+
+	/* set desc_start addr */
+	netsec_writel(priv, netsec_desc_start_reg_addr_up[NETSEC_RING_RX],
+		      upper_32_bits(priv->desc_ring[NETSEC_RING_RX].desc_phys));
+	netsec_writel(priv, netsec_desc_start_reg_addr_lw[NETSEC_RING_RX],
+		      lower_32_bits(priv->desc_ring[NETSEC_RING_RX].desc_phys));
+
+	netsec_writel(priv, netsec_desc_start_reg_addr_up[NETSEC_RING_TX],
+		      upper_32_bits(priv->desc_ring[NETSEC_RING_TX].desc_phys));
+	netsec_writel(priv, netsec_desc_start_reg_addr_lw[NETSEC_RING_TX],
+		      lower_32_bits(priv->desc_ring[NETSEC_RING_TX].desc_phys));
+
+	/* set normal tx desc ring config */
+	netsec_writel(priv, desc_ads[NETSEC_RING_TX],
+		      1 << NETSEC_REG_DESC_ENDIAN);
+	netsec_writel(priv, desc_ads[NETSEC_RING_RX],
+		      1 << NETSEC_REG_DESC_ENDIAN);
+
+	err = netsec_netdev_load_microcode(priv);
+	if (err) {
+		netif_err(priv, probe, priv->ndev,
+			  "%s: failed to load microcode (%d)\n", __func__, err);
+		return err;
+	}
+
+	/* start DMA engines */
+	netsec_writel(priv, NETSEC_REG_DMA_TMR_CTRL, priv->freq / 1000000 - 1);
+	netsec_writel(priv, NETSEC_REG_ADDR_DIS_CORE, 0);
+
+	usleep_range(1000, 2000);
+
+	if (!(netsec_readl(priv, NETSEC_REG_TOP_STATUS) &
+	      NETSEC_TOP_IRQ_REG_CODE_LOAD_END)) {
+		netif_err(priv, drv, priv->ndev, "microengine start failed\n");
+		return -ENXIO;
+	}
+	netsec_writel(priv, NETSEC_REG_TOP_STATUS,
+		      NETSEC_TOP_IRQ_REG_CODE_LOAD_END);
+
+	value = netsec_calc_pkt_ctrl_reg_param(&priv->param.pkt_ctrlaram);
+
+	if (priv->param.use_jumbo_pkt_flag)
+		value |= NETSEC_PKT_CTRL_REG_EN_JUMBO;
+
+	/* change to normal mode */
+	netsec_writel(priv, NETSEC_REG_DMA_MH_CTRL, MH_CTRL__MODE_TRANS);
+	netsec_writel(priv, NETSEC_REG_PKT_CTRL, value);
+
+	while ((netsec_readl(priv, NETSEC_REG_MODE_TRANS_COMP_STATUS) &
+		NETSEC_MODE_TRANS_COMP_IRQ_T2N) == 0)
+		cpu_relax();
+
+	return 0;
+}
+
+static void netsec_ring_irq_clr(struct netsec_priv *priv,
+				unsigned int id, u32 value)
+{
+	netsec_writel(priv, desc_ring_irq_status_reg_addr[id],
+		      value & (NETSEC_IRQ_EMPTY | NETSEC_IRQ_ERR));
+}
+
+static void netsec_napi_tx_processing(struct netsec_priv *priv)
+{
+	netsec_ring_irq_clr(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+	netsec_clean_tx_desc_ring(priv);
+
+	if (netif_queue_stopped(priv->ndev) &&
+	    netsec_get_tx_avail_num(priv) >= NETSEC_NETDEV_TX_PKT_SCAT_NUM_MAX)
+		netif_wake_queue(priv->ndev);
+}
+
+int netsec_netdev_napi_poll(struct napi_struct *napi_p, int budget)
+{
+	struct netsec_priv *priv = container_of(napi_p, struct netsec_priv,
+						napi);
+	struct net_device *ndev = priv->ndev;
+	struct netsec_rx_pkt_info rx_info;
+	int ret, done = 0, rx_num = 0;
+	struct netsec_frag_info frag;
+	struct sk_buff *skb;
+	u16 len;
+
+	netsec_napi_tx_processing(priv);
+
+	while (done < budget) {
+		if (!rx_num) {
+			rx_num = netsec_get_rx_num(priv);
+			if (!rx_num)
+				break;
+		}
+		done++;
+		rx_num--;
+		ret = netsec_get_rx_pkt_data(priv, &rx_info, &frag, &len, &skb);
+		if (unlikely(ret == -ENOMEM)) {
+			netif_err(priv, drv, priv->ndev,
+				  "%s: rx fail %d\n", __func__, ret);
+			ndev->stats.rx_dropped++;
+			continue;
+		}
+		dma_unmap_single(priv->dev, frag.dma_addr, frag.len,
+				 DMA_FROM_DEVICE);
+		skb_put(skb, len);
+		skb->protocol = eth_type_trans(skb, priv->ndev);
+
+		if (priv->rx_cksum_offload_flag &&
+		    rx_info.rx_cksum_result == NETSEC_RX_CKSUM_OK)
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+		if (napi_gro_receive(napi_p, skb) != GRO_DROP) {
+			ndev->stats.rx_packets++;
+			ndev->stats.rx_bytes += len;
+		}
+	}
+
+	if (done < budget && napi_complete_done(napi_p, done))
+		netsec_writel(priv, NETSEC_REG_INTEN_SET,
+			      NETSEC_IRQ_TX | NETSEC_IRQ_RX);
+	return done;
+}
+
+static netdev_tx_t netsec_netdev_start_xmit(struct sk_buff *skb,
+					    struct net_device *ndev)
+{
+	struct netsec_priv *priv = netdev_priv(ndev);
+	struct netsec_tx_pkt_ctrl tx_ctrl = {};
+	u16 pend_tx, tso_seg_len = 0;
+	skb_frag_t *frag;
+	int count_frags;
+	int ret, i;
+
+	netsec_ring_irq_clr(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+
+	count_frags = skb_shinfo(skb)->nr_frags + 1;
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		if ((skb->protocol == htons(ETH_P_IP) &&
+		     ip_hdr(skb)->protocol == IPPROTO_TCP) ||
+		    (skb->protocol == htons(ETH_P_IPV6) &&
+		     ipv6_hdr(skb)->nexthdr == IPPROTO_TCP))
+			tx_ctrl.cksum_offload_flag = true;
+		else
+			skb_checksum_help(skb);
+	}
+
+	if (skb_is_gso(skb))
+		tso_seg_len = skb_shinfo(skb)->gso_size;
+
+	if (tso_seg_len > 0) {
+		if (skb->protocol == htons(ETH_P_IP)) {
+			ip_hdr(skb)->tot_len = 0;
+			tcp_hdr(skb)->check =
+				~tcp_v4_check(0, ip_hdr(skb)->saddr,
+					      ip_hdr(skb)->daddr, 0);
+		} else {
+			ipv6_hdr(skb)->payload_len = 0;
+			tcp_hdr(skb)->check =
+				~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+						 &ipv6_hdr(skb)->daddr,
+						 0, IPPROTO_TCP, 0);
+		}
+
+		tx_ctrl.tcp_seg_offload_flag = true;
+		tx_ctrl.tcp_seg_len = tso_seg_len;
+	}
+
+	priv->tx_info[0].dma_addr = dma_map_single(priv->dev, skb->data,
+						   skb_headlen(skb),
+						   DMA_TO_DEVICE);
+	if (dma_mapping_error(priv->dev, priv->tx_info[0].dma_addr)) {
+		netif_err(priv, drv, priv->ndev,
+			  "%s: DMA mapping failed\n", __func__);
+		return NETDEV_TX_OK;
+	}
+	priv->tx_info[0].addr = skb->data;
+	priv->tx_info[0].len = skb_headlen(skb);
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+		priv->tx_info[i + 1].dma_addr =
+			skb_frag_dma_map(priv->dev, frag, 0,
+					 skb_frag_size(frag), DMA_TO_DEVICE);
+		priv->tx_info[i + 1].addr = skb_frag_address(frag);
+		priv->tx_info[i + 1].len = frag->size;
+	}
+
+	netsec_mark_skb_type(skb, NETSEC_RING_TX);
+
+	ret = netsec_set_tx_pkt_data(priv, &tx_ctrl, count_frags,
+				     priv->tx_info, skb);
+	if (ret) {
+		netif_info(priv, drv, priv->ndev,
+			   "set tx pkt failed %d\n", ret);
+		for (i = 0; i < count_frags; i++)
+			dma_unmap_single(priv->dev, priv->tx_info[i].dma_addr,
+					 priv->tx_info[i].len, DMA_TO_DEVICE);
+		ndev->stats.tx_dropped++;
+
+		return NETDEV_TX_OK;
+	}
+
+	netdev_sent_queue(priv->ndev, skb->len);
+
+	spin_lock(&priv->tx_queue_lock);
+	pend_tx = netsec_get_tx_avail_num(priv);
+
+	if (pend_tx < NETSEC_NETDEV_TX_PKT_SCAT_NUM_MAX) {
+		netsec_ring_irq_enable(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+		netif_stop_queue(ndev);
+		goto err;
+	}
+	if (pend_tx <= DESC_NUM - 2) {
+		netsec_ring_irq_enable(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+		goto err;
+	}
+	netsec_ring_irq_disable(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+
+err:
+	spin_unlock(&priv->tx_queue_lock);
+
+	return NETDEV_TX_OK;
+}
+
+static int netsec_netdev_set_features(struct net_device *ndev,
+				      netdev_features_t features)
+{
+	struct netsec_priv *priv = netdev_priv(ndev);
+
+	priv->rx_cksum_offload_flag = !!(features & NETIF_F_RXCSUM);
+
+	return 0;
+}
+
+static void netsec_phy_adjust_link(struct net_device *ndev)
+{
+	struct netsec_priv *priv = netdev_priv(ndev);
+
+	if (priv->actual_link_speed == ndev->phydev->speed &&
+	    priv->actual_duplex == ndev->phydev->duplex)
+		return;
+
+	phy_print_status(ndev->phydev);
+
+	netsec_stop_gmac(priv);
+	netsec_start_gmac(priv);
+}
+
+static irqreturn_t netsec_irq_handler(int irq, void *dev_id)
+{
+	struct netsec_priv *priv = dev_id;
+	u32 status = netsec_readl(priv, NETSEC_REG_TOP_STATUS) &
+		     netsec_readl(priv, NETSEC_REG_TOP_INTEN);
+
+	if (!status)
+		return IRQ_NONE;
+
+	if (status & (NETSEC_IRQ_TX | NETSEC_IRQ_RX)) {
+		netsec_writel(priv, NETSEC_REG_INTEN_CLR,
+			      status & (NETSEC_IRQ_TX | NETSEC_IRQ_RX));
+		napi_schedule(&priv->napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void netsec_reset_hardware(struct netsec_priv *priv)
+{
+	/* stop DMA engines */
+	if (!netsec_readl(priv, NETSEC_REG_ADDR_DIS_CORE)) {
+		netsec_writel(priv, NETSEC_REG_DMA_HM_CTRL,
+			      NETSEC_DMA_CTRL_REG_STOP);
+		netsec_writel(priv, NETSEC_REG_DMA_MH_CTRL,
+			      NETSEC_DMA_CTRL_REG_STOP);
+
+		while (netsec_readl(priv, NETSEC_REG_DMA_HM_CTRL) &
+		       NETSEC_DMA_CTRL_REG_STOP)
+			cpu_relax();
+
+		while (netsec_readl(priv, NETSEC_REG_DMA_MH_CTRL) &
+		       NETSEC_DMA_CTRL_REG_STOP)
+			cpu_relax();
+	}
+
+	netsec_writel(priv, NETSEC_REG_SOFT_RST, NETSEC_SOFT_RST_REG_RESET);
+	netsec_writel(priv, NETSEC_REG_SOFT_RST, NETSEC_SOFT_RST_REG_RUN);
+	netsec_writel(priv, NETSEC_REG_COM_INIT, NETSEC_COM_INIT_REG_ALL);
+
+	while (netsec_readl(priv, NETSEC_REG_COM_INIT) != 0)
+		cpu_relax();
+}
+
+static int netsec_netdev_open(struct net_device *ndev)
+{
+	struct netsec_priv *priv = netdev_priv(ndev);
+	int ret, n;
+
+	pm_runtime_get_sync(priv->dev);
+
+	netsec_reset_hardware(priv);
+
+	for (n = 0; n <= NETSEC_RING_MAX; n++) {
+		ret = netsec_alloc_desc_ring(priv, n);
+		if (ret) {
+			netif_err(priv, probe, priv->ndev,
+				  "%s: alloc ring failed\n", __func__);
+			goto err;
+		}
+	}
+
+	ret = netsec_setup_rx_desc(priv, &priv->desc_ring[NETSEC_RING_RX]);
+	if (ret) {
+		netif_err(priv, probe, priv->ndev,
+			  "%s: fail setup ring\n", __func__);
+		goto err1;
+	}
+
+	ret = netsec_init_hardware(priv);
+	if (ret) {
+		netif_err(priv, probe, priv->ndev,
+			  "%s: netsec_init_hardware fail %d\n", __func__, ret);
+		goto err1;
+	}
+
+	ret = request_irq(priv->ndev->irq, netsec_irq_handler,
+			  IRQF_SHARED, "netsec", priv);
+	if (ret) {
+		netif_err(priv, drv, priv->ndev, "request_irq failed\n");
+		goto err1;
+	}
+	priv->irq_registered = true;
+
+	ret = netsec_clean_rx_desc_ring(priv);
+	if (ret) {
+		netif_err(priv, drv, priv->ndev,
+			  "%s: clean rx desc fail\n", __func__);
+		goto err2;
+	}
+
+	ret = netsec_clean_tx_desc_ring(priv);
+	if (ret) {
+		netif_err(priv, drv, priv->ndev,
+			  "%s: clean tx desc fail\n", __func__);
+		goto err2;
+	}
+
+	netsec_ring_irq_clr(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+
+	if (dev_of_node(priv->dev)) {
+		if (!of_phy_connect(priv->ndev, priv->phy_np,
+				    netsec_phy_adjust_link, 0,
+				    priv->phy_interface)) {
+			netif_err(priv, link, priv->ndev, "missing PHY\n");
+			goto err2;
+		}
+	} else {
+		ret = phy_connect_direct(priv->ndev, priv->phydev,
+					 netsec_phy_adjust_link,
+					 priv->phy_interface);
+		if (ret) {
+			netif_err(priv, link, priv->ndev,
+				  "phy_connect_direct() failed (%d)\n", ret);
+			goto err2;
+		}
+	}
+
+	phy_start_aneg(ndev->phydev);
+
+	netsec_ring_irq_disable(priv, NETSEC_RING_TX, NETSEC_IRQ_EMPTY);
+
+	netsec_start_gmac(priv);
+	napi_enable(&priv->napi);
+	netif_start_queue(ndev);
+
+	netsec_writel(priv, NETSEC_REG_INTEN_SET,
+		      NETSEC_IRQ_TX | NETSEC_IRQ_RX);
+
+	return 0;
+
+err2:
+	pm_runtime_put_sync(priv->dev);
+	free_irq(priv->ndev->irq, priv);
+	priv->irq_registered = false;
+err1:
+	for (n = 0; n <= NETSEC_RING_MAX; n++)
+		netsec_free_desc_ring(priv, &priv->desc_ring[n]);
+err:
+	pm_runtime_put_sync(priv->dev);
+
+	return ret;
+}
+
+static int netsec_netdev_stop(struct net_device *ndev)
+{
+	struct netsec_priv *priv = netdev_priv(ndev);
+	int n;
+
+	phy_stop(ndev->phydev);
+	phy_disconnect(ndev->phydev);
+
+	netif_stop_queue(priv->ndev);
+	napi_disable(&priv->napi);
+
+	netsec_writel(priv, NETSEC_REG_INTEN_CLR, ~0);
+	netsec_stop_gmac(priv);
+
+	pm_runtime_put_sync(priv->dev);
+
+	for (n = 0; n <= NETSEC_RING_MAX; n++)
+		netsec_free_desc_ring(priv, &priv->desc_ring[n]);
+
+	free_irq(priv->ndev->irq, priv);
+	priv->irq_registered = false;
+
+	return 0;
+}
+
+const struct net_device_ops netsec_netdev_ops = {
+	.ndo_open		= netsec_netdev_open,
+	.ndo_stop		= netsec_netdev_stop,
+	.ndo_start_xmit		= netsec_netdev_start_xmit,
+	.ndo_set_features	= netsec_netdev_set_features,
+	.ndo_set_mac_address    = eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
diff --git a/drivers/net/ethernet/socionext/netsec/netsec_platform.c b/drivers/net/ethernet/socionext/netsec/netsec_platform.c
new file mode 100644
index 0000000..624f6a7
--- /dev/null
+++ b/drivers/net/ethernet/socionext/netsec/netsec_platform.c
@@ -0,0 +1,435 @@
+/**
+ * drivers/net/ethernet/socionext/netsec/netsec_platform.c
+ *
+ *  Copyright (C) 2013-2014 Fujitsu Semiconductor Limited.
+ *  Copyright (C) 2014-2017 Linaro Ltd. All rights reserved.
+ *     Andy Green <andy.green@linaro.org>
+ *     Jassi Brar <jaswinder.singh@linaro.org>
+ *     Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/ctype.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/sizes.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_net.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+
+#include "netsec.h"
+
+#define NETSEC_F_NETSEC_VER_MAJOR_NUM(x) (x & 0xffff0000)
+
+static int napi_weight = 64;
+static u16 pause_time = 256;
+
+static int netsec_of_probe(struct platform_device *pdev,
+			   struct netsec_priv *priv)
+{
+	int clk_count, ret, i;
+
+	priv->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+	if (!priv->phy_np) {
+		dev_err(&pdev->dev, "missing required property 'phy-handle'\n");
+		return -EINVAL;
+	}
+
+	/* we require named clocks if there is more than one */
+	clk_count = of_property_count_strings(pdev->dev.of_node, "clock-names");
+	if (clk_count > 1) {
+		if (clk_count > ARRAY_SIZE(priv->clk)) {
+			dev_err(&pdev->dev, "too many clocks specified (%d)\n",
+				clk_count);
+			return -EINVAL;
+		}
+
+		for (i = 0; i < clk_count; i++) {
+			const char *clk_name;
+
+			ret = of_property_read_string_index(pdev->dev.of_node,
+							    "clock-names", i,
+							    &clk_name);
+			if (ret) {
+				dev_err(&pdev->dev,
+					"failed to parse 'clock-names'\n");
+				return ret;
+			}
+			priv->clk[i] = devm_clk_get(&pdev->dev, clk_name);
+			if (!strcmp(clk_name, "phy_refclk")) {
+				priv->freq = clk_get_rate(priv->clk[i]);
+				dev_dbg(&pdev->dev,
+					"found PHY refclock #%d freq %u\n",
+					i, priv->freq);
+			}
+		}
+		priv->clock_count = clk_count;
+	} else {
+		priv->clk[0] = devm_clk_get(&pdev->dev, NULL);
+		if (IS_ERR(priv->clk)) {
+			dev_err(&pdev->dev,
+				"missing required property 'clocks'\n");
+			return PTR_ERR(priv->clk);
+		}
+		priv->freq = clk_get_rate(priv->clk[0]);
+		priv->clock_count = 1;
+	}
+	return 0;
+}
+
+static int netsec_acpi_probe(struct platform_device *pdev,
+			     struct netsec_priv *priv, u32 *phy_addr)
+{
+	int ret;
+
+	if (!IS_ENABLED(CONFIG_ACPI))
+		return -ENODEV;
+
+	ret = device_property_read_u32(&pdev->dev, "phy-channel", phy_addr);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"missing required property 'phy-channel'\n");
+		return ret;
+	}
+
+	ret = device_property_read_u32(&pdev->dev,
+				       "socionext,phy-clock-frequency",
+				       &priv->freq);
+	if (ret)
+		dev_err(&pdev->dev,
+			"missing required property 'socionext,phy-clock-frequency'\n");
+	return ret;
+}
+
+static int netsec_probe(struct platform_device *pdev)
+{
+	struct net_device *ndev;
+	struct netsec_priv *priv;
+	struct resource *mmio_res, *eeprom_res, *irq_res;
+	u8 *mac, macbuf[ETH_ALEN];
+	u32 hw_ver, phy_addr;
+	int ret;
+
+	mmio_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mmio_res) {
+		dev_err(&pdev->dev, "No MMIO resource found.\n");
+		return -ENODEV;
+	}
+
+	eeprom_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (!eeprom_res) {
+		dev_info(&pdev->dev, "No EEPROM resource found.\n");
+		return -ENODEV;
+	}
+
+	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!irq_res) {
+		dev_err(&pdev->dev, "No IRQ resource found.\n");
+		return -ENODEV;
+	}
+
+	ndev = alloc_etherdev(sizeof(*priv));
+	if (!ndev)
+		return -ENOMEM;
+
+	priv = netdev_priv(ndev);
+	priv->ndev = ndev;
+	SET_NETDEV_DEV(ndev, &pdev->dev);
+	platform_set_drvdata(pdev, priv);
+	priv->dev = &pdev->dev;
+
+	priv->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV |
+			   NETIF_MSG_LINK | NETIF_MSG_PROBE;
+
+	ndev->irq = irq_res->start;
+
+	priv->phy_interface = device_get_phy_mode(&pdev->dev);
+	if (priv->phy_interface < 0) {
+		dev_err(&pdev->dev, "missing required property 'phy-mode'\n");
+		ret = -ENODEV;
+		goto free_ndev;
+	}
+
+	priv->ioaddr = devm_ioremap(&pdev->dev, mmio_res->start,
+				    resource_size(mmio_res));
+	if (!priv->ioaddr) {
+		dev_err(&pdev->dev, "devm_ioremap() failed\n");
+		ret = -ENXIO;
+		goto free_ndev;
+	}
+
+	priv->eeprom_base = devm_memremap(&pdev->dev, eeprom_res->start,
+					  resource_size(eeprom_res),
+					  MEMREMAP_WT);
+	if (!priv->eeprom_base) {
+		dev_err(&pdev->dev, "devm_memremap() failed for EEPROM\n");
+		ret = -ENXIO;
+		goto free_ndev;
+	}
+
+	mac = device_get_mac_address(&pdev->dev, macbuf, sizeof(macbuf));
+	if (mac)
+		ether_addr_copy(ndev->dev_addr, mac);
+
+	if (priv->eeprom_base &&
+	    (!mac || !is_valid_ether_addr(ndev->dev_addr))) {
+		const u8 *macp = priv->eeprom_base + NETSEC_EEPROM_MAC_ADDRESS;
+
+		ndev->dev_addr[0] = macp[3];
+		ndev->dev_addr[1] = macp[2];
+		ndev->dev_addr[2] = macp[1];
+		ndev->dev_addr[3] = macp[0];
+		ndev->dev_addr[4] = macp[7];
+		ndev->dev_addr[5] = macp[6];
+	}
+
+	if (!is_valid_ether_addr(ndev->dev_addr)) {
+		dev_warn(&pdev->dev, "No MAC address found, using random\n");
+		eth_hw_addr_random(ndev);
+	}
+
+	if (dev_of_node(&pdev->dev))
+		ret = netsec_of_probe(pdev, priv);
+	else
+		ret = netsec_acpi_probe(pdev, priv, &phy_addr);
+	if (ret)
+		goto free_ndev;
+
+	if (!priv->freq) {
+		dev_err(&pdev->dev, "missing PHY reference clock frequency\n");
+		ret = -ENODEV;
+		goto free_ndev;
+	}
+
+	/* disable by default */
+	priv->et_coalesce.rx_coalesce_usecs = 0;
+	priv->et_coalesce.rx_max_coalesced_frames = 1;
+	priv->et_coalesce.tx_coalesce_usecs = 0;
+	priv->et_coalesce.tx_max_coalesced_frames = 1;
+
+	ret = device_property_read_u32(&pdev->dev, "max-frame-size",
+				       &ndev->max_mtu);
+	if (ret < 0)
+		ndev->max_mtu = ETH_DATA_LEN;
+
+	priv->rx_pkt_buf_len = ndev->max_mtu + 22;
+	priv->param.use_jumbo_pkt_flag = (ndev->max_mtu > ETH_DATA_LEN);
+
+	pm_runtime_enable(&pdev->dev);
+	/* runtime_pm coverage just for probe, open/close also cover it */
+	pm_runtime_get_sync(&pdev->dev);
+
+	hw_ver = netsec_readl(priv, NETSEC_REG_F_TAIKI_VER);
+	/* this driver only supports F_TAIKI style NETSEC */
+	if (NETSEC_F_NETSEC_VER_MAJOR_NUM(hw_ver) !=
+	    NETSEC_F_NETSEC_VER_MAJOR_NUM(NETSEC_REG_NETSEC_VER_F_TAIKI)) {
+		ret = -ENODEV;
+		goto pm_disable;
+	}
+
+	dev_info(&pdev->dev, "hardware revision %d.%d\n",
+		 hw_ver >> 16, hw_ver & 0xffff);
+
+	priv->mac_mode.flow_start_th = NETSEC_FLOW_CONTROL_START_THRESHOLD;
+	priv->mac_mode.flow_stop_th = NETSEC_FLOW_CONTROL_STOP_THRESHOLD;
+	priv->mac_mode.pause_time = pause_time;
+	priv->mac_mode.flow_ctrl_enable_flag = false;
+
+	netif_napi_add(ndev, &priv->napi, netsec_netdev_napi_poll, napi_weight);
+
+	ndev->netdev_ops = &netsec_netdev_ops;
+	ndev->ethtool_ops = &netsec_ethtool_ops;
+	ndev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO |
+			 NETIF_F_HIGHDMA | NETIF_F_RXCSUM;
+	ndev->hw_features = ndev->features;
+
+	priv->rx_cksum_offload_flag = true;
+	spin_lock_init(&priv->tx_queue_lock);
+
+	ret = netsec_mii_register(priv);
+	if (ret) {
+		dev_err(&pdev->dev, "mii bus registration failed (%d)\n", ret);
+		goto pm_disable;
+	}
+
+	if (!dev_of_node(&pdev->dev)) { /* ACPI */
+		priv->phydev = get_phy_device(priv->mii_bus, phy_addr, false);
+		if (IS_ERR(priv->phydev)) {
+			dev_err(&pdev->dev, "get_phy_device() failed (%ld)\n",
+				PTR_ERR(priv->phydev));
+			ret = PTR_ERR(priv->phydev);
+			goto unregister_mii;
+		}
+
+		ret = phy_device_register(priv->phydev);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"phy_device_register() failed (%d)\n", ret);
+			phy_device_free(priv->phydev);
+			goto unregister_mii;
+		}
+	}
+
+	/* disable all other interrupt sources */
+	netsec_writel(priv, NETSEC_REG_INTEN_CLR, ~0);
+	netsec_writel(priv, NETSEC_REG_INTEN_SET,
+		      NETSEC_IRQ_TX | NETSEC_IRQ_RX);
+
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
+		dev_warn(&pdev->dev, "Failed to enable 64-bit DMA\n");
+
+	ret = register_netdev(ndev);
+	if (ret) {
+		netif_err(priv, probe, ndev, "register_netdev() failed\n");
+		goto unregister_mii;
+	}
+
+	pm_runtime_put_sync_suspend(&pdev->dev);
+
+	return 0;
+
+unregister_mii:
+	netsec_mii_unregister(priv);
+
+pm_disable:
+	pm_runtime_put_sync_suspend(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
+free_ndev:
+	free_netdev(ndev);
+
+	dev_err(&pdev->dev, "init failed\n");
+
+	return ret;
+}
+
+static int netsec_remove(struct platform_device *pdev)
+{
+	struct netsec_priv *priv = platform_get_drvdata(pdev);
+
+	unregister_netdev(priv->ndev);
+	if (!dev_of_node(&pdev->dev)) { /* ACPI */
+		phy_device_remove(priv->phydev);
+		phy_device_free(priv->phydev);
+	}
+	netsec_mii_unregister(priv);
+	pm_runtime_disable(&pdev->dev);
+	free_netdev(priv->ndev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int netsec_runtime_suspend(struct device *dev)
+{
+	struct netsec_priv *priv = dev_get_drvdata(dev);
+	int n;
+
+	netif_dbg(priv, drv, priv->ndev, "%s\n", __func__);
+
+	if (priv->irq_registered)
+		disable_irq(priv->ndev->irq);
+
+	netsec_writel(priv, NETSEC_REG_CLK_EN, 0);
+
+	for (n = priv->clock_count - 1; n >= 0; n--)
+		clk_disable_unprepare(priv->clk[n]);
+
+	return 0;
+}
+
+static int netsec_runtime_resume(struct device *dev)
+{
+	struct netsec_priv *priv = dev_get_drvdata(dev);
+	int n;
+
+	netif_dbg(priv, drv, priv->ndev, "%s\n", __func__);
+
+	/* first let the clocks back on */
+
+	for (n = 0; n < priv->clock_count; n++)
+		clk_prepare_enable(priv->clk[n]);
+
+	netsec_writel(priv, NETSEC_REG_CLK_EN, NETSEC_CLK_EN_REG_DOM_D |
+					       NETSEC_CLK_EN_REG_DOM_C |
+					       NETSEC_CLK_EN_REG_DOM_G);
+
+	if (priv->irq_registered)
+		enable_irq(priv->ndev->irq);
+
+	return 0;
+}
+
+static int netsec_pm_suspend(struct device *dev)
+{
+	struct netsec_priv *priv = dev_get_drvdata(dev);
+
+	netif_dbg(priv, drv, priv->ndev, "%s\n", __func__);
+
+	if (pm_runtime_status_suspended(dev))
+		return 0;
+
+	return netsec_runtime_suspend(dev);
+}
+
+static int netsec_pm_resume(struct device *dev)
+{
+	struct netsec_priv *priv = dev_get_drvdata(dev);
+
+	netif_dbg(priv, drv, priv->ndev, "%s\n", __func__);
+
+	if (pm_runtime_status_suspended(dev))
+		return 0;
+
+	return netsec_runtime_resume(dev);
+}
+#endif
+
+static const struct dev_pm_ops netsec_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(netsec_pm_suspend, netsec_pm_resume)
+	SET_RUNTIME_PM_OPS(netsec_runtime_suspend, netsec_runtime_resume, NULL)
+};
+
+static const struct of_device_id netsec_dt_ids[] = {
+	{ .compatible = "socionext,synquacer-netsec" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, netsec_dt_ids);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id netsec_acpi_ids[] = {
+	{ "SCX0001" },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, netsec_acpi_ids);
+#endif
+
+static struct platform_driver netsec_driver = {
+	.probe				= netsec_probe,
+	.remove				= netsec_remove,
+	.driver.name			= "netsec",
+	.driver.of_match_table		= netsec_dt_ids,
+	.driver.acpi_match_table	= ACPI_PTR(netsec_acpi_ids),
+	.driver.pm			= &netsec_pm_ops,
+};
+module_platform_driver(netsec_driver);
+
+MODULE_AUTHOR("Andy Green <andy.green@linaro.org>");
+MODULE_AUTHOR("Jassi Brar <jaswinder.singh@linaro.org>");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+MODULE_DESCRIPTION("NETSEC Ethernet driver");
+MODULE_LICENSE("GPL");
-- 
cgit v1.1

From 31a61532e7b859a797d36595ec5ab7485a9b24d5 Mon Sep 17 00:00:00 2001
From: Jassi Brar <jassisinghbrar@gmail.com>
Date: Wed, 30 Aug 2017 15:55:52 +0530
Subject: dt-bindings: net: Add DT bindings for Socionext Netsec

This patch adds documentation for Device-Tree bindings for the
Socionext NetSec Controller driver.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 .../devicetree/bindings/net/socionext-netsec.txt   | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/socionext-netsec.txt

diff --git a/Documentation/devicetree/bindings/net/socionext-netsec.txt b/Documentation/devicetree/bindings/net/socionext-netsec.txt
new file mode 100644
index 0000000..4695969
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/socionext-netsec.txt
@@ -0,0 +1,43 @@
+* Socionext NetSec Ethernet Controller IP
+
+Required properties:
+- compatible: Should be "socionext,synquacer-netsec"
+- reg: Address and length of the control register area, followed by the
+       address and length of the EEPROM holding the MAC address and
+       microengine firmware
+- interrupts: Should contain ethernet controller interrupt
+- clocks: phandle to the PHY reference clock, and any other clocks to be
+          switched by runtime_pm
+- clock-names: Required only if more than a single clock is listed in 'clocks'.
+               The PHY reference clock must be named 'phy_refclk'
+- phy-mode: See ethernet.txt file in the same directory
+- phy-handle: phandle to select child phy
+
+Optional properties: (See ethernet.txt file in the same directory)
+- local-mac-address
+- mac-address
+- max-speed
+- max-frame-size
+
+Required properties for the child phy:
+- reg: phy address
+
+Example:
+	eth0: netsec@522D0000 {
+		compatible = "socionext,synquacer-netsec";
+		reg = <0 0x522D0000 0x0 0x10000>, <0 0x10000000 0x0 0x10000>;
+		interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&clk_netsec>;
+		phy-mode = "rgmii";
+		max-speed = <1000>;
+		max-frame-size = <9000>;
+		phy-handle = <&ethphy0>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@1 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+		};
+	};
-- 
cgit v1.1

From d2fc584f8237746a84e6ec8690d8884f148fc449 Mon Sep 17 00:00:00 2001
From: Peter Robinson <pbrobinson@gmail.com>
Date: Tue, 10 Oct 2017 11:35:51 +0100
Subject: [PATCH] add interrupt.h, sort alphabetically

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
 drivers/net/ethernet/socionext/netsec/netsec_platform.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/socionext/netsec/netsec_platform.c b/drivers/net/ethernet/socionext/netsec/netsec_platform.c
index 624f6a7093f6..79072bae917d 100644
--- a/drivers/net/ethernet/socionext/netsec/netsec_platform.c
+++ b/drivers/net/ethernet/socionext/netsec/netsec_platform.c
@@ -14,21 +14,22 @@
  */
 
 #include <linux/acpi.h>
-#include <linux/device.h>
-#include <linux/ctype.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
 #include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/ctype.h>
+#include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
 #include <linux/module.h>
-#include <linux/sizes.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
+#include <linux/netdevice.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
-#include <linux/io.h>
+#include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/sizes.h>
+#include <linux/types.h>
 
 #include "netsec.h"
 
-- 
2.14.2