Adding upstream version 6.1.76.upstream/6.1.76upstream

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

5 files changed, 5997 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/Makefile b/drivers/net/ethernet/broadcom/genet/Makefile
new file mode 100644
index 000000000..edfc26a46
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_BCMGENET) += genet.o
+genet-objs := bcmgenet.o bcmmii.o bcmgenet_wol.o
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
new file mode 100644
index 000000000..c2a991308
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -0,0 +1,4371 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Broadcom GENET (Gigabit Ethernet) controller driver
+ *
+ * Copyright (c) 2014-2020 Broadcom
+ */
+
+#define pr_fmt(fmt)				"bcmgenet: " fmt
+
+#include <linux/acpi.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/if_ether.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/pm.h>
+#include <linux/clk.h>
+#include <net/arp.h>
+
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/phy.h>
+#include <linux/platform_data/bcmgenet.h>
+
+#include <asm/unaligned.h>
+
+#include "bcmgenet.h"
+
+/* Maximum number of hardware queues, downsized if needed */
+#define GENET_MAX_MQ_CNT	4
+
+/* Default highest priority queue for multi queue support */
+#define GENET_Q0_PRIORITY	0
+
+#define GENET_Q16_RX_BD_CNT	\
+	(TOTAL_DESC - priv->hw_params->rx_queues * priv->hw_params->rx_bds_per_q)
+#define GENET_Q16_TX_BD_CNT	\
+	(TOTAL_DESC - priv->hw_params->tx_queues * priv->hw_params->tx_bds_per_q)
+
+#define RX_BUF_LENGTH		2048
+#define SKB_ALIGNMENT		32
+
+/* Tx/Rx DMA register offset, skip 256 descriptors */
+#define WORDS_PER_BD(p)		(p->hw_params->words_per_bd)
+#define DMA_DESC_SIZE		(WORDS_PER_BD(priv) * sizeof(u32))
+
+#define GENET_TDMA_REG_OFF	(priv->hw_params->tdma_offset + \
+				TOTAL_DESC * DMA_DESC_SIZE)
+
+#define GENET_RDMA_REG_OFF	(priv->hw_params->rdma_offset + \
+				TOTAL_DESC * DMA_DESC_SIZE)
+
+/* Forward declarations */
+static void bcmgenet_set_rx_mode(struct net_device *dev);
+
+static inline void bcmgenet_writel(u32 value, void __iomem *offset)
+{
+	/* MIPS chips strapped for BE will automagically configure the
+	 * peripheral registers for CPU-native byte order.
+	 */
+	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+		__raw_writel(value, offset);
+	else
+		writel_relaxed(value, offset);
+}
+
+static inline u32 bcmgenet_readl(void __iomem *offset)
+{
+	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+		return __raw_readl(offset);
+	else
+		return readl_relaxed(offset);
+}
+
+static inline void dmadesc_set_length_status(struct bcmgenet_priv *priv,
+					     void __iomem *d, u32 value)
+{
+	bcmgenet_writel(value, d + DMA_DESC_LENGTH_STATUS);
+}
+
+static inline void dmadesc_set_addr(struct bcmgenet_priv *priv,
+				    void __iomem *d,
+				    dma_addr_t addr)
+{
+	bcmgenet_writel(lower_32_bits(addr), d + DMA_DESC_ADDRESS_LO);
+
+	/* Register writes to GISB bus can take couple hundred nanoseconds
+	 * and are done for each packet, save these expensive writes unless
+	 * the platform is explicitly configured for 64-bits/LPAE.
+	 */
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+	if (priv->hw_params->flags & GENET_HAS_40BITS)
+		bcmgenet_writel(upper_32_bits(addr), d + DMA_DESC_ADDRESS_HI);
+#endif
+}
+
+/* Combined address + length/status setter */
+static inline void dmadesc_set(struct bcmgenet_priv *priv,
+			       void __iomem *d, dma_addr_t addr, u32 val)
+{
+	dmadesc_set_addr(priv, d, addr);
+	dmadesc_set_length_status(priv, d, val);
+}
+
+static inline dma_addr_t dmadesc_get_addr(struct bcmgenet_priv *priv,
+					  void __iomem *d)
+{
+	dma_addr_t addr;
+
+	addr = bcmgenet_readl(d + DMA_DESC_ADDRESS_LO);
+
+	/* Register writes to GISB bus can take couple hundred nanoseconds
+	 * and are done for each packet, save these expensive writes unless
+	 * the platform is explicitly configured for 64-bits/LPAE.
+	 */
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+	if (priv->hw_params->flags & GENET_HAS_40BITS)
+		addr |= (u64)bcmgenet_readl(d + DMA_DESC_ADDRESS_HI) << 32;
+#endif
+	return addr;
+}
+
+#define GENET_VER_FMT	"%1d.%1d EPHY: 0x%04x"
+
+#define GENET_MSG_DEFAULT	(NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+				NETIF_MSG_LINK)
+
+static inline u32 bcmgenet_rbuf_ctrl_get(struct bcmgenet_priv *priv)
+{
+	if (GENET_IS_V1(priv))
+		return bcmgenet_rbuf_readl(priv, RBUF_FLUSH_CTRL_V1);
+	else
+		return bcmgenet_sys_readl(priv, SYS_RBUF_FLUSH_CTRL);
+}
+
+static inline void bcmgenet_rbuf_ctrl_set(struct bcmgenet_priv *priv, u32 val)
+{
+	if (GENET_IS_V1(priv))
+		bcmgenet_rbuf_writel(priv, val, RBUF_FLUSH_CTRL_V1);
+	else
+		bcmgenet_sys_writel(priv, val, SYS_RBUF_FLUSH_CTRL);
+}
+
+/* These macros are defined to deal with register map change
+ * between GENET1.1 and GENET2. Only those currently being used
+ * by driver are defined.
+ */
+static inline u32 bcmgenet_tbuf_ctrl_get(struct bcmgenet_priv *priv)
+{
+	if (GENET_IS_V1(priv))
+		return bcmgenet_rbuf_readl(priv, TBUF_CTRL_V1);
+	else
+		return bcmgenet_readl(priv->base +
+				      priv->hw_params->tbuf_offset + TBUF_CTRL);
+}
+
+static inline void bcmgenet_tbuf_ctrl_set(struct bcmgenet_priv *priv, u32 val)
+{
+	if (GENET_IS_V1(priv))
+		bcmgenet_rbuf_writel(priv, val, TBUF_CTRL_V1);
+	else
+		bcmgenet_writel(val, priv->base +
+				priv->hw_params->tbuf_offset + TBUF_CTRL);
+}
+
+static inline u32 bcmgenet_bp_mc_get(struct bcmgenet_priv *priv)
+{
+	if (GENET_IS_V1(priv))
+		return bcmgenet_rbuf_readl(priv, TBUF_BP_MC_V1);
+	else
+		return bcmgenet_readl(priv->base +
+				      priv->hw_params->tbuf_offset + TBUF_BP_MC);
+}
+
+static inline void bcmgenet_bp_mc_set(struct bcmgenet_priv *priv, u32 val)
+{
+	if (GENET_IS_V1(priv))
+		bcmgenet_rbuf_writel(priv, val, TBUF_BP_MC_V1);
+	else
+		bcmgenet_writel(val, priv->base +
+				priv->hw_params->tbuf_offset + TBUF_BP_MC);
+}
+
+/* RX/TX DMA register accessors */
+enum dma_reg {
+	DMA_RING_CFG = 0,
+	DMA_CTRL,
+	DMA_STATUS,
+	DMA_SCB_BURST_SIZE,
+	DMA_ARB_CTRL,
+	DMA_PRIORITY_0,
+	DMA_PRIORITY_1,
+	DMA_PRIORITY_2,
+	DMA_INDEX2RING_0,
+	DMA_INDEX2RING_1,
+	DMA_INDEX2RING_2,
+	DMA_INDEX2RING_3,
+	DMA_INDEX2RING_4,
+	DMA_INDEX2RING_5,
+	DMA_INDEX2RING_6,
+	DMA_INDEX2RING_7,
+	DMA_RING0_TIMEOUT,
+	DMA_RING1_TIMEOUT,
+	DMA_RING2_TIMEOUT,
+	DMA_RING3_TIMEOUT,
+	DMA_RING4_TIMEOUT,
+	DMA_RING5_TIMEOUT,
+	DMA_RING6_TIMEOUT,
+	DMA_RING7_TIMEOUT,
+	DMA_RING8_TIMEOUT,
+	DMA_RING9_TIMEOUT,
+	DMA_RING10_TIMEOUT,
+	DMA_RING11_TIMEOUT,
+	DMA_RING12_TIMEOUT,
+	DMA_RING13_TIMEOUT,
+	DMA_RING14_TIMEOUT,
+	DMA_RING15_TIMEOUT,
+	DMA_RING16_TIMEOUT,
+};
+
+static const u8 bcmgenet_dma_regs_v3plus[] = {
+	[DMA_RING_CFG]		= 0x00,
+	[DMA_CTRL]		= 0x04,
+	[DMA_STATUS]		= 0x08,
+	[DMA_SCB_BURST_SIZE]	= 0x0C,
+	[DMA_ARB_CTRL]		= 0x2C,
+	[DMA_PRIORITY_0]	= 0x30,
+	[DMA_PRIORITY_1]	= 0x34,
+	[DMA_PRIORITY_2]	= 0x38,
+	[DMA_RING0_TIMEOUT]	= 0x2C,
+	[DMA_RING1_TIMEOUT]	= 0x30,
+	[DMA_RING2_TIMEOUT]	= 0x34,
+	[DMA_RING3_TIMEOUT]	= 0x38,
+	[DMA_RING4_TIMEOUT]	= 0x3c,
+	[DMA_RING5_TIMEOUT]	= 0x40,
+	[DMA_RING6_TIMEOUT]	= 0x44,
+	[DMA_RING7_TIMEOUT]	= 0x48,
+	[DMA_RING8_TIMEOUT]	= 0x4c,
+	[DMA_RING9_TIMEOUT]	= 0x50,
+	[DMA_RING10_TIMEOUT]	= 0x54,
+	[DMA_RING11_TIMEOUT]	= 0x58,
+	[DMA_RING12_TIMEOUT]	= 0x5c,
+	[DMA_RING13_TIMEOUT]	= 0x60,
+	[DMA_RING14_TIMEOUT]	= 0x64,
+	[DMA_RING15_TIMEOUT]	= 0x68,
+	[DMA_RING16_TIMEOUT]	= 0x6C,
+	[DMA_INDEX2RING_0]	= 0x70,
+	[DMA_INDEX2RING_1]	= 0x74,
+	[DMA_INDEX2RING_2]	= 0x78,
+	[DMA_INDEX2RING_3]	= 0x7C,
+	[DMA_INDEX2RING_4]	= 0x80,
+	[DMA_INDEX2RING_5]	= 0x84,
+	[DMA_INDEX2RING_6]	= 0x88,
+	[DMA_INDEX2RING_7]	= 0x8C,
+};
+
+static const u8 bcmgenet_dma_regs_v2[] = {
+	[DMA_RING_CFG]		= 0x00,
+	[DMA_CTRL]		= 0x04,
+	[DMA_STATUS]		= 0x08,
+	[DMA_SCB_BURST_SIZE]	= 0x0C,
+	[DMA_ARB_CTRL]		= 0x30,
+	[DMA_PRIORITY_0]	= 0x34,
+	[DMA_PRIORITY_1]	= 0x38,
+	[DMA_PRIORITY_2]	= 0x3C,
+	[DMA_RING0_TIMEOUT]	= 0x2C,
+	[DMA_RING1_TIMEOUT]	= 0x30,
+	[DMA_RING2_TIMEOUT]	= 0x34,
+	[DMA_RING3_TIMEOUT]	= 0x38,
+	[DMA_RING4_TIMEOUT]	= 0x3c,
+	[DMA_RING5_TIMEOUT]	= 0x40,
+	[DMA_RING6_TIMEOUT]	= 0x44,
+	[DMA_RING7_TIMEOUT]	= 0x48,
+	[DMA_RING8_TIMEOUT]	= 0x4c,
+	[DMA_RING9_TIMEOUT]	= 0x50,
+	[DMA_RING10_TIMEOUT]	= 0x54,
+	[DMA_RING11_TIMEOUT]	= 0x58,
+	[DMA_RING12_TIMEOUT]	= 0x5c,
+	[DMA_RING13_TIMEOUT]	= 0x60,
+	[DMA_RING14_TIMEOUT]	= 0x64,
+	[DMA_RING15_TIMEOUT]	= 0x68,
+	[DMA_RING16_TIMEOUT]	= 0x6C,
+};
+
+static const u8 bcmgenet_dma_regs_v1[] = {
+	[DMA_CTRL]		= 0x00,
+	[DMA_STATUS]		= 0x04,
+	[DMA_SCB_BURST_SIZE]	= 0x0C,
+	[DMA_ARB_CTRL]		= 0x30,
+	[DMA_PRIORITY_0]	= 0x34,
+	[DMA_PRIORITY_1]	= 0x38,
+	[DMA_PRIORITY_2]	= 0x3C,
+	[DMA_RING0_TIMEOUT]	= 0x2C,
+	[DMA_RING1_TIMEOUT]	= 0x30,
+	[DMA_RING2_TIMEOUT]	= 0x34,
+	[DMA_RING3_TIMEOUT]	= 0x38,
+	[DMA_RING4_TIMEOUT]	= 0x3c,
+	[DMA_RING5_TIMEOUT]	= 0x40,
+	[DMA_RING6_TIMEOUT]	= 0x44,
+	[DMA_RING7_TIMEOUT]	= 0x48,
+	[DMA_RING8_TIMEOUT]	= 0x4c,
+	[DMA_RING9_TIMEOUT]	= 0x50,
+	[DMA_RING10_TIMEOUT]	= 0x54,
+	[DMA_RING11_TIMEOUT]	= 0x58,
+	[DMA_RING12_TIMEOUT]	= 0x5c,
+	[DMA_RING13_TIMEOUT]	= 0x60,
+	[DMA_RING14_TIMEOUT]	= 0x64,
+	[DMA_RING15_TIMEOUT]	= 0x68,
+	[DMA_RING16_TIMEOUT]	= 0x6C,
+};
+
+/* Set at runtime once bcmgenet version is known */
+static const u8 *bcmgenet_dma_regs;
+
+static inline struct bcmgenet_priv *dev_to_priv(struct device *dev)
+{
+	return netdev_priv(dev_get_drvdata(dev));
+}
+
+static inline u32 bcmgenet_tdma_readl(struct bcmgenet_priv *priv,
+				      enum dma_reg r)
+{
+	return bcmgenet_readl(priv->base + GENET_TDMA_REG_OFF +
+			      DMA_RINGS_SIZE + bcmgenet_dma_regs[r]);
+}
+
+static inline void bcmgenet_tdma_writel(struct bcmgenet_priv *priv,
+					u32 val, enum dma_reg r)
+{
+	bcmgenet_writel(val, priv->base + GENET_TDMA_REG_OFF +
+			DMA_RINGS_SIZE + bcmgenet_dma_regs[r]);
+}
+
+static inline u32 bcmgenet_rdma_readl(struct bcmgenet_priv *priv,
+				      enum dma_reg r)
+{
+	return bcmgenet_readl(priv->base + GENET_RDMA_REG_OFF +
+			      DMA_RINGS_SIZE + bcmgenet_dma_regs[r]);
+}
+
+static inline void bcmgenet_rdma_writel(struct bcmgenet_priv *priv,
+					u32 val, enum dma_reg r)
+{
+	bcmgenet_writel(val, priv->base + GENET_RDMA_REG_OFF +
+			DMA_RINGS_SIZE + bcmgenet_dma_regs[r]);
+}
+
+/* RDMA/TDMA ring registers and accessors
+ * we merge the common fields and just prefix with T/D the registers
+ * having different meaning depending on the direction
+ */
+enum dma_ring_reg {
+	TDMA_READ_PTR = 0,
+	RDMA_WRITE_PTR = TDMA_READ_PTR,
+	TDMA_READ_PTR_HI,
+	RDMA_WRITE_PTR_HI = TDMA_READ_PTR_HI,
+	TDMA_CONS_INDEX,
+	RDMA_PROD_INDEX = TDMA_CONS_INDEX,
+	TDMA_PROD_INDEX,
+	RDMA_CONS_INDEX = TDMA_PROD_INDEX,
+	DMA_RING_BUF_SIZE,
+	DMA_START_ADDR,
+	DMA_START_ADDR_HI,
+	DMA_END_ADDR,
+	DMA_END_ADDR_HI,
+	DMA_MBUF_DONE_THRESH,
+	TDMA_FLOW_PERIOD,
+	RDMA_XON_XOFF_THRESH = TDMA_FLOW_PERIOD,
+	TDMA_WRITE_PTR,
+	RDMA_READ_PTR = TDMA_WRITE_PTR,
+	TDMA_WRITE_PTR_HI,
+	RDMA_READ_PTR_HI = TDMA_WRITE_PTR_HI
+};
+
+/* GENET v4 supports 40-bits pointer addressing
+ * for obvious reasons the LO and HI word parts
+ * are contiguous, but this offsets the other
+ * registers.
+ */
+static const u8 genet_dma_ring_regs_v4[] = {
+	[TDMA_READ_PTR]			= 0x00,
+	[TDMA_READ_PTR_HI]		= 0x04,
+	[TDMA_CONS_INDEX]		= 0x08,
+	[TDMA_PROD_INDEX]		= 0x0C,
+	[DMA_RING_BUF_SIZE]		= 0x10,
+	[DMA_START_ADDR]		= 0x14,
+	[DMA_START_ADDR_HI]		= 0x18,
+	[DMA_END_ADDR]			= 0x1C,
+	[DMA_END_ADDR_HI]		= 0x20,
+	[DMA_MBUF_DONE_THRESH]		= 0x24,
+	[TDMA_FLOW_PERIOD]		= 0x28,
+	[TDMA_WRITE_PTR]		= 0x2C,
+	[TDMA_WRITE_PTR_HI]		= 0x30,
+};
+
+static const u8 genet_dma_ring_regs_v123[] = {
+	[TDMA_READ_PTR]			= 0x00,
+	[TDMA_CONS_INDEX]		= 0x04,
+	[TDMA_PROD_INDEX]		= 0x08,
+	[DMA_RING_BUF_SIZE]		= 0x0C,
+	[DMA_START_ADDR]		= 0x10,
+	[DMA_END_ADDR]			= 0x14,
+	[DMA_MBUF_DONE_THRESH]		= 0x18,
+	[TDMA_FLOW_PERIOD]		= 0x1C,
+	[TDMA_WRITE_PTR]		= 0x20,
+};
+
+/* Set at runtime once GENET version is known */
+static const u8 *genet_dma_ring_regs;
+
+static inline u32 bcmgenet_tdma_ring_readl(struct bcmgenet_priv *priv,
+					   unsigned int ring,
+					   enum dma_ring_reg r)
+{
+	return bcmgenet_readl(priv->base + GENET_TDMA_REG_OFF +
+			      (DMA_RING_SIZE * ring) +
+			      genet_dma_ring_regs[r]);
+}
+
+static inline void bcmgenet_tdma_ring_writel(struct bcmgenet_priv *priv,
+					     unsigned int ring, u32 val,
+					     enum dma_ring_reg r)
+{
+	bcmgenet_writel(val, priv->base + GENET_TDMA_REG_OFF +
+			(DMA_RING_SIZE * ring) +
+			genet_dma_ring_regs[r]);
+}
+
+static inline u32 bcmgenet_rdma_ring_readl(struct bcmgenet_priv *priv,
+					   unsigned int ring,
+					   enum dma_ring_reg r)
+{
+	return bcmgenet_readl(priv->base + GENET_RDMA_REG_OFF +
+			      (DMA_RING_SIZE * ring) +
+			      genet_dma_ring_regs[r]);
+}
+
+static inline void bcmgenet_rdma_ring_writel(struct bcmgenet_priv *priv,
+					     unsigned int ring, u32 val,
+					     enum dma_ring_reg r)
+{
+	bcmgenet_writel(val, priv->base + GENET_RDMA_REG_OFF +
+			(DMA_RING_SIZE * ring) +
+			genet_dma_ring_regs[r]);
+}
+
+static void bcmgenet_hfb_enable_filter(struct bcmgenet_priv *priv, u32 f_index)
+{
+	u32 offset;
+	u32 reg;
+
+	offset = HFB_FLT_ENABLE_V3PLUS + (f_index < 32) * sizeof(u32);
+	reg = bcmgenet_hfb_reg_readl(priv, offset);
+	reg |= (1 << (f_index % 32));
+	bcmgenet_hfb_reg_writel(priv, reg, offset);
+	reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL);
+	reg |= RBUF_HFB_EN;
+	bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL);
+}
+
+static void bcmgenet_hfb_disable_filter(struct bcmgenet_priv *priv, u32 f_index)
+{
+	u32 offset, reg, reg1;
+
+	offset = HFB_FLT_ENABLE_V3PLUS;
+	reg = bcmgenet_hfb_reg_readl(priv, offset);
+	reg1 = bcmgenet_hfb_reg_readl(priv, offset + sizeof(u32));
+	if  (f_index < 32) {
+		reg1 &= ~(1 << (f_index % 32));
+		bcmgenet_hfb_reg_writel(priv, reg1, offset + sizeof(u32));
+	} else {
+		reg &= ~(1 << (f_index % 32));
+		bcmgenet_hfb_reg_writel(priv, reg, offset);
+	}
+	if (!reg && !reg1) {
+		reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL);
+		reg &= ~RBUF_HFB_EN;
+		bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL);
+	}
+}
+
+static void bcmgenet_hfb_set_filter_rx_queue_mapping(struct bcmgenet_priv *priv,
+						     u32 f_index, u32 rx_queue)
+{
+	u32 offset;
+	u32 reg;
+
+	offset = f_index / 8;
+	reg = bcmgenet_rdma_readl(priv, DMA_INDEX2RING_0 + offset);
+	reg &= ~(0xF << (4 * (f_index % 8)));
+	reg |= ((rx_queue & 0xF) << (4 * (f_index % 8)));
+	bcmgenet_rdma_writel(priv, reg, DMA_INDEX2RING_0 + offset);
+}
+
+static void bcmgenet_hfb_set_filter_length(struct bcmgenet_priv *priv,
+					   u32 f_index, u32 f_length)
+{
+	u32 offset;
+	u32 reg;
+
+	offset = HFB_FLT_LEN_V3PLUS +
+		 ((priv->hw_params->hfb_filter_cnt - 1 - f_index) / 4) *
+		 sizeof(u32);
+	reg = bcmgenet_hfb_reg_readl(priv, offset);
+	reg &= ~(0xFF << (8 * (f_index % 4)));
+	reg |= ((f_length & 0xFF) << (8 * (f_index % 4)));
+	bcmgenet_hfb_reg_writel(priv, reg, offset);
+}
+
+static int bcmgenet_hfb_validate_mask(void *mask, size_t size)
+{
+	while (size) {
+		switch (*(unsigned char *)mask++) {
+		case 0x00:
+		case 0x0f:
+		case 0xf0:
+		case 0xff:
+			size--;
+			continue;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+#define VALIDATE_MASK(x) \
+	bcmgenet_hfb_validate_mask(&(x), sizeof(x))
+
+static int bcmgenet_hfb_insert_data(struct bcmgenet_priv *priv, u32 f_index,
+				    u32 offset, void *val, void *mask,
+				    size_t size)
+{
+	u32 index, tmp;
+
+	index = f_index * priv->hw_params->hfb_filter_size + offset / 2;
+	tmp = bcmgenet_hfb_readl(priv, index * sizeof(u32));
+
+	while (size--) {
+		if (offset++ & 1) {
+			tmp &= ~0x300FF;
+			tmp |= (*(unsigned char *)val++);
+			switch ((*(unsigned char *)mask++)) {
+			case 0xFF:
+				tmp |= 0x30000;
+				break;
+			case 0xF0:
+				tmp |= 0x20000;
+				break;
+			case 0x0F:
+				tmp |= 0x10000;
+				break;
+			}
+			bcmgenet_hfb_writel(priv, tmp, index++ * sizeof(u32));
+			if (size)
+				tmp = bcmgenet_hfb_readl(priv,
+							 index * sizeof(u32));
+		} else {
+			tmp &= ~0xCFF00;
+			tmp |= (*(unsigned char *)val++) << 8;
+			switch ((*(unsigned char *)mask++)) {
+			case 0xFF:
+				tmp |= 0xC0000;
+				break;
+			case 0xF0:
+				tmp |= 0x80000;
+				break;
+			case 0x0F:
+				tmp |= 0x40000;
+				break;
+			}
+			if (!size)
+				bcmgenet_hfb_writel(priv, tmp, index * sizeof(u32));
+		}
+	}
+
+	return 0;
+}
+
+static void bcmgenet_hfb_create_rxnfc_filter(struct bcmgenet_priv *priv,
+					     struct bcmgenet_rxnfc_rule *rule)
+{
+	struct ethtool_rx_flow_spec *fs = &rule->fs;
+	u32 offset = 0, f_length = 0, f;
+	u8 val_8, mask_8;
+	__be16 val_16;
+	u16 mask_16;
+	size_t size;
+
+	f = fs->location;
+	if (fs->flow_type & FLOW_MAC_EXT) {
+		bcmgenet_hfb_insert_data(priv, f, 0,
+					 &fs->h_ext.h_dest, &fs->m_ext.h_dest,
+					 sizeof(fs->h_ext.h_dest));
+	}
+
+	if (fs->flow_type & FLOW_EXT) {
+		if (fs->m_ext.vlan_etype ||
+		    fs->m_ext.vlan_tci) {
+			bcmgenet_hfb_insert_data(priv, f, 12,
+						 &fs->h_ext.vlan_etype,
+						 &fs->m_ext.vlan_etype,
+						 sizeof(fs->h_ext.vlan_etype));
+			bcmgenet_hfb_insert_data(priv, f, 14,
+						 &fs->h_ext.vlan_tci,
+						 &fs->m_ext.vlan_tci,
+						 sizeof(fs->h_ext.vlan_tci));
+			offset += VLAN_HLEN;
+			f_length += DIV_ROUND_UP(VLAN_HLEN, 2);
+		}
+	}
+
+	switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
+	case ETHER_FLOW:
+		f_length += DIV_ROUND_UP(ETH_HLEN, 2);
+		bcmgenet_hfb_insert_data(priv, f, 0,
+					 &fs->h_u.ether_spec.h_dest,
+					 &fs->m_u.ether_spec.h_dest,
+					 sizeof(fs->h_u.ether_spec.h_dest));
+		bcmgenet_hfb_insert_data(priv, f, ETH_ALEN,
+					 &fs->h_u.ether_spec.h_source,
+					 &fs->m_u.ether_spec.h_source,
+					 sizeof(fs->h_u.ether_spec.h_source));
+		bcmgenet_hfb_insert_data(priv, f, (2 * ETH_ALEN) + offset,
+					 &fs->h_u.ether_spec.h_proto,
+					 &fs->m_u.ether_spec.h_proto,
+					 sizeof(fs->h_u.ether_spec.h_proto));
+		break;
+	case IP_USER_FLOW:
+		f_length += DIV_ROUND_UP(ETH_HLEN + 20, 2);
+		/* Specify IP Ether Type */
+		val_16 = htons(ETH_P_IP);
+		mask_16 = 0xFFFF;
+		bcmgenet_hfb_insert_data(priv, f, (2 * ETH_ALEN) + offset,
+					 &val_16, &mask_16, sizeof(val_16));
+		bcmgenet_hfb_insert_data(priv, f, 15 + offset,
+					 &fs->h_u.usr_ip4_spec.tos,
+					 &fs->m_u.usr_ip4_spec.tos,
+					 sizeof(fs->h_u.usr_ip4_spec.tos));
+		bcmgenet_hfb_insert_data(priv, f, 23 + offset,
+					 &fs->h_u.usr_ip4_spec.proto,
+					 &fs->m_u.usr_ip4_spec.proto,
+					 sizeof(fs->h_u.usr_ip4_spec.proto));
+		bcmgenet_hfb_insert_data(priv, f, 26 + offset,
+					 &fs->h_u.usr_ip4_spec.ip4src,
+					 &fs->m_u.usr_ip4_spec.ip4src,
+					 sizeof(fs->h_u.usr_ip4_spec.ip4src));
+		bcmgenet_hfb_insert_data(priv, f, 30 + offset,
+					 &fs->h_u.usr_ip4_spec.ip4dst,
+					 &fs->m_u.usr_ip4_spec.ip4dst,
+					 sizeof(fs->h_u.usr_ip4_spec.ip4dst));
+		if (!fs->m_u.usr_ip4_spec.l4_4_bytes)
+			break;
+
+		/* Only supports 20 byte IPv4 header */
+		val_8 = 0x45;
+		mask_8 = 0xFF;
+		bcmgenet_hfb_insert_data(priv, f, ETH_HLEN + offset,
+					 &val_8, &mask_8,
+					 sizeof(val_8));
+		size = sizeof(fs->h_u.usr_ip4_spec.l4_4_bytes);
+		bcmgenet_hfb_insert_data(priv, f,
+					 ETH_HLEN + 20 + offset,
+					 &fs->h_u.usr_ip4_spec.l4_4_bytes,
+					 &fs->m_u.usr_ip4_spec.l4_4_bytes,
+					 size);
+		f_length += DIV_ROUND_UP(size, 2);
+		break;
+	}
+
+	bcmgenet_hfb_set_filter_length(priv, f, 2 * f_length);
+	if (!fs->ring_cookie || fs->ring_cookie == RX_CLS_FLOW_WAKE) {
+		/* Ring 0 flows can be handled by the default Descriptor Ring
+		 * We'll map them to ring 0, but don't enable the filter
+		 */
+		bcmgenet_hfb_set_filter_rx_queue_mapping(priv, f, 0);
+		rule->state = BCMGENET_RXNFC_STATE_DISABLED;
+	} else {
+		/* Other Rx rings are direct mapped here */
+		bcmgenet_hfb_set_filter_rx_queue_mapping(priv, f,
+							 fs->ring_cookie);
+		bcmgenet_hfb_enable_filter(priv, f);
+		rule->state = BCMGENET_RXNFC_STATE_ENABLED;
+	}
+}
+
+/* bcmgenet_hfb_clear
+ *
+ * Clear Hardware Filter Block and disable all filtering.
+ */
+static void bcmgenet_hfb_clear_filter(struct bcmgenet_priv *priv, u32 f_index)
+{
+	u32 base, i;
+
+	base = f_index * priv->hw_params->hfb_filter_size;
+	for (i = 0; i < priv->hw_params->hfb_filter_size; i++)
+		bcmgenet_hfb_writel(priv, 0x0, (base + i) * sizeof(u32));
+}
+
+static void bcmgenet_hfb_clear(struct bcmgenet_priv *priv)
+{
+	u32 i;
+
+	if (GENET_IS_V1(priv) || GENET_IS_V2(priv))
+		return;
+
+	bcmgenet_hfb_reg_writel(priv, 0x0, HFB_CTRL);
+	bcmgenet_hfb_reg_writel(priv, 0x0, HFB_FLT_ENABLE_V3PLUS);
+	bcmgenet_hfb_reg_writel(priv, 0x0, HFB_FLT_ENABLE_V3PLUS + 4);
+
+	for (i = DMA_INDEX2RING_0; i <= DMA_INDEX2RING_7; i++)
+		bcmgenet_rdma_writel(priv, 0x0, i);
+
+	for (i = 0; i < (priv->hw_params->hfb_filter_cnt / 4); i++)
+		bcmgenet_hfb_reg_writel(priv, 0x0,
+					HFB_FLT_LEN_V3PLUS + i * sizeof(u32));
+
+	for (i = 0; i < priv->hw_params->hfb_filter_cnt; i++)
+		bcmgenet_hfb_clear_filter(priv, i);
+}
+
+static void bcmgenet_hfb_init(struct bcmgenet_priv *priv)
+{
+	int i;
+
+	INIT_LIST_HEAD(&priv->rxnfc_list);
+	if (GENET_IS_V1(priv) || GENET_IS_V2(priv))
+		return;
+
+	for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) {
+		INIT_LIST_HEAD(&priv->rxnfc_rules[i].list);
+		priv->rxnfc_rules[i].state = BCMGENET_RXNFC_STATE_UNUSED;
+	}
+
+	bcmgenet_hfb_clear(priv);
+}
+
+static int bcmgenet_begin(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	/* Turn on the clock */
+	return clk_prepare_enable(priv->clk);
+}
+
+static void bcmgenet_complete(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	/* Turn off the clock */
+	clk_disable_unprepare(priv->clk);
+}
+
+static int bcmgenet_get_link_ksettings(struct net_device *dev,
+				       struct ethtool_link_ksettings *cmd)
+{
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	if (!dev->phydev)
+		return -ENODEV;
+
+	phy_ethtool_ksettings_get(dev->phydev, cmd);
+
+	return 0;
+}
+
+static int bcmgenet_set_link_ksettings(struct net_device *dev,
+				       const struct ethtool_link_ksettings *cmd)
+{
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	if (!dev->phydev)
+		return -ENODEV;
+
+	return phy_ethtool_ksettings_set(dev->phydev, cmd);
+}
+
+static int bcmgenet_set_features(struct net_device *dev,
+				 netdev_features_t features)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 reg;
+	int ret;
+
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
+
+	/* Make sure we reflect the value of CRC_CMD_FWD */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	priv->crc_fwd_en = !!(reg & CMD_CRC_FWD);
+
+	clk_disable_unprepare(priv->clk);
+
+	return ret;
+}
+
+static u32 bcmgenet_get_msglevel(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	return priv->msg_enable;
+}
+
+static void bcmgenet_set_msglevel(struct net_device *dev, u32 level)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	priv->msg_enable = level;
+}
+
+static int bcmgenet_get_coalesce(struct net_device *dev,
+				 struct ethtool_coalesce *ec,
+				 struct kernel_ethtool_coalesce *kernel_coal,
+				 struct netlink_ext_ack *extack)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rx_ring *ring;
+	unsigned int i;
+
+	ec->tx_max_coalesced_frames =
+		bcmgenet_tdma_ring_readl(priv, DESC_INDEX,
+					 DMA_MBUF_DONE_THRESH);
+	ec->rx_max_coalesced_frames =
+		bcmgenet_rdma_ring_readl(priv, DESC_INDEX,
+					 DMA_MBUF_DONE_THRESH);
+	ec->rx_coalesce_usecs =
+		bcmgenet_rdma_readl(priv, DMA_RING16_TIMEOUT) * 8192 / 1000;
+
+	for (i = 0; i < priv->hw_params->rx_queues; i++) {
+		ring = &priv->rx_rings[i];
+		ec->use_adaptive_rx_coalesce |= ring->dim.use_dim;
+	}
+	ring = &priv->rx_rings[DESC_INDEX];
+	ec->use_adaptive_rx_coalesce |= ring->dim.use_dim;
+
+	return 0;
+}
+
+static void bcmgenet_set_rx_coalesce(struct bcmgenet_rx_ring *ring,
+				     u32 usecs, u32 pkts)
+{
+	struct bcmgenet_priv *priv = ring->priv;
+	unsigned int i = ring->index;
+	u32 reg;
+
+	bcmgenet_rdma_ring_writel(priv, i, pkts, DMA_MBUF_DONE_THRESH);
+
+	reg = bcmgenet_rdma_readl(priv, DMA_RING0_TIMEOUT + i);
+	reg &= ~DMA_TIMEOUT_MASK;
+	reg |= DIV_ROUND_UP(usecs * 1000, 8192);
+	bcmgenet_rdma_writel(priv, reg, DMA_RING0_TIMEOUT + i);
+}
+
+static void bcmgenet_set_ring_rx_coalesce(struct bcmgenet_rx_ring *ring,
+					  struct ethtool_coalesce *ec)
+{
+	struct dim_cq_moder moder;
+	u32 usecs, pkts;
+
+	ring->rx_coalesce_usecs = ec->rx_coalesce_usecs;
+	ring->rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
+	usecs = ring->rx_coalesce_usecs;
+	pkts = ring->rx_max_coalesced_frames;
+
+	if (ec->use_adaptive_rx_coalesce && !ring->dim.use_dim) {
+		moder = net_dim_get_def_rx_moderation(ring->dim.dim.mode);
+		usecs = moder.usec;
+		pkts = moder.pkts;
+	}
+
+	ring->dim.use_dim = ec->use_adaptive_rx_coalesce;
+	bcmgenet_set_rx_coalesce(ring, usecs, pkts);
+}
+
+static int bcmgenet_set_coalesce(struct net_device *dev,
+				 struct ethtool_coalesce *ec,
+				 struct kernel_ethtool_coalesce *kernel_coal,
+				 struct netlink_ext_ack *extack)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	unsigned int i;
+
+	/* Base system clock is 125Mhz, DMA timeout is this reference clock
+	 * divided by 1024, which yields roughly 8.192us, our maximum value
+	 * has to fit in the DMA_TIMEOUT_MASK (16 bits)
+	 */
+	if (ec->tx_max_coalesced_frames > DMA_INTR_THRESHOLD_MASK ||
+	    ec->tx_max_coalesced_frames == 0 ||
+	    ec->rx_max_coalesced_frames > DMA_INTR_THRESHOLD_MASK ||
+	    ec->rx_coalesce_usecs > (DMA_TIMEOUT_MASK * 8) + 1)
+		return -EINVAL;
+
+	if (ec->rx_coalesce_usecs == 0 && ec->rx_max_coalesced_frames == 0)
+		return -EINVAL;
+
+	/* GENET TDMA hardware does not support a configurable timeout, but will
+	 * always generate an interrupt either after MBDONE packets have been
+	 * transmitted, or when the ring is empty.
+	 */
+
+	/* Program all TX queues with the same values, as there is no
+	 * ethtool knob to do coalescing on a per-queue basis
+	 */
+	for (i = 0; i < priv->hw_params->tx_queues; i++)
+		bcmgenet_tdma_ring_writel(priv, i,
+					  ec->tx_max_coalesced_frames,
+					  DMA_MBUF_DONE_THRESH);
+	bcmgenet_tdma_ring_writel(priv, DESC_INDEX,
+				  ec->tx_max_coalesced_frames,
+				  DMA_MBUF_DONE_THRESH);
+
+	for (i = 0; i < priv->hw_params->rx_queues; i++)
+		bcmgenet_set_ring_rx_coalesce(&priv->rx_rings[i], ec);
+	bcmgenet_set_ring_rx_coalesce(&priv->rx_rings[DESC_INDEX], ec);
+
+	return 0;
+}
+
+static void bcmgenet_get_pauseparam(struct net_device *dev,
+				    struct ethtool_pauseparam *epause)
+{
+	struct bcmgenet_priv *priv;
+	u32 umac_cmd;
+
+	priv = netdev_priv(dev);
+
+	epause->autoneg = priv->autoneg_pause;
+
+	if (netif_carrier_ok(dev)) {
+		/* report active state when link is up */
+		umac_cmd = bcmgenet_umac_readl(priv, UMAC_CMD);
+		epause->tx_pause = !(umac_cmd & CMD_TX_PAUSE_IGNORE);
+		epause->rx_pause = !(umac_cmd & CMD_RX_PAUSE_IGNORE);
+	} else {
+		/* otherwise report stored settings */
+		epause->tx_pause = priv->tx_pause;
+		epause->rx_pause = priv->rx_pause;
+	}
+}
+
+static int bcmgenet_set_pauseparam(struct net_device *dev,
+				   struct ethtool_pauseparam *epause)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	if (!dev->phydev)
+		return -ENODEV;
+
+	if (!phy_validate_pause(dev->phydev, epause))
+		return -EINVAL;
+
+	priv->autoneg_pause = !!epause->autoneg;
+	priv->tx_pause = !!epause->tx_pause;
+	priv->rx_pause = !!epause->rx_pause;
+
+	bcmgenet_phy_pause_set(dev, priv->rx_pause, priv->tx_pause);
+
+	return 0;
+}
+
+/* standard ethtool support functions. */
+enum bcmgenet_stat_type {
+	BCMGENET_STAT_NETDEV = -1,
+	BCMGENET_STAT_MIB_RX,
+	BCMGENET_STAT_MIB_TX,
+	BCMGENET_STAT_RUNT,
+	BCMGENET_STAT_MISC,
+	BCMGENET_STAT_SOFT,
+};
+
+struct bcmgenet_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int stat_sizeof;
+	int stat_offset;
+	enum bcmgenet_stat_type type;
+	/* reg offset from UMAC base for misc counters */
+	u16 reg_offset;
+};
+
+#define STAT_NETDEV(m) { \
+	.stat_string = __stringify(m), \
+	.stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
+	.stat_offset = offsetof(struct net_device_stats, m), \
+	.type = BCMGENET_STAT_NETDEV, \
+}
+
+#define STAT_GENET_MIB(str, m, _type) { \
+	.stat_string = str, \
+	.stat_sizeof = sizeof(((struct bcmgenet_priv *)0)->m), \
+	.stat_offset = offsetof(struct bcmgenet_priv, m), \
+	.type = _type, \
+}
+
+#define STAT_GENET_MIB_RX(str, m) STAT_GENET_MIB(str, m, BCMGENET_STAT_MIB_RX)
+#define STAT_GENET_MIB_TX(str, m) STAT_GENET_MIB(str, m, BCMGENET_STAT_MIB_TX)
+#define STAT_GENET_RUNT(str, m) STAT_GENET_MIB(str, m, BCMGENET_STAT_RUNT)
+#define STAT_GENET_SOFT_MIB(str, m) STAT_GENET_MIB(str, m, BCMGENET_STAT_SOFT)
+
+#define STAT_GENET_MISC(str, m, offset) { \
+	.stat_string = str, \
+	.stat_sizeof = sizeof(((struct bcmgenet_priv *)0)->m), \
+	.stat_offset = offsetof(struct bcmgenet_priv, m), \
+	.type = BCMGENET_STAT_MISC, \
+	.reg_offset = offset, \
+}
+
+#define STAT_GENET_Q(num) \
+	STAT_GENET_SOFT_MIB("txq" __stringify(num) "_packets", \
+			tx_rings[num].packets), \
+	STAT_GENET_SOFT_MIB("txq" __stringify(num) "_bytes", \
+			tx_rings[num].bytes), \
+	STAT_GENET_SOFT_MIB("rxq" __stringify(num) "_bytes", \
+			rx_rings[num].bytes),	 \
+	STAT_GENET_SOFT_MIB("rxq" __stringify(num) "_packets", \
+			rx_rings[num].packets), \
+	STAT_GENET_SOFT_MIB("rxq" __stringify(num) "_errors", \
+			rx_rings[num].errors), \
+	STAT_GENET_SOFT_MIB("rxq" __stringify(num) "_dropped", \
+			rx_rings[num].dropped)
+
+/* There is a 0xC gap between the end of RX and beginning of TX stats and then
+ * between the end of TX stats and the beginning of the RX RUNT
+ */
+#define BCMGENET_STAT_OFFSET	0xc
+
+/* Hardware counters must be kept in sync because the order/offset
+ * is important here (order in structure declaration = order in hardware)
+ */
+static const struct bcmgenet_stats bcmgenet_gstrings_stats[] = {
+	/* general stats */
+	STAT_NETDEV(rx_packets),
+	STAT_NETDEV(tx_packets),
+	STAT_NETDEV(rx_bytes),
+	STAT_NETDEV(tx_bytes),
+	STAT_NETDEV(rx_errors),
+	STAT_NETDEV(tx_errors),
+	STAT_NETDEV(rx_dropped),
+	STAT_NETDEV(tx_dropped),
+	STAT_NETDEV(multicast),
+	/* UniMAC RSV counters */
+	STAT_GENET_MIB_RX("rx_64_octets", mib.rx.pkt_cnt.cnt_64),
+	STAT_GENET_MIB_RX("rx_65_127_oct", mib.rx.pkt_cnt.cnt_127),
+	STAT_GENET_MIB_RX("rx_128_255_oct", mib.rx.pkt_cnt.cnt_255),
+	STAT_GENET_MIB_RX("rx_256_511_oct", mib.rx.pkt_cnt.cnt_511),
+	STAT_GENET_MIB_RX("rx_512_1023_oct", mib.rx.pkt_cnt.cnt_1023),
+	STAT_GENET_MIB_RX("rx_1024_1518_oct", mib.rx.pkt_cnt.cnt_1518),
+	STAT_GENET_MIB_RX("rx_vlan_1519_1522_oct", mib.rx.pkt_cnt.cnt_mgv),
+	STAT_GENET_MIB_RX("rx_1522_2047_oct", mib.rx.pkt_cnt.cnt_2047),
+	STAT_GENET_MIB_RX("rx_2048_4095_oct", mib.rx.pkt_cnt.cnt_4095),
+	STAT_GENET_MIB_RX("rx_4096_9216_oct", mib.rx.pkt_cnt.cnt_9216),
+	STAT_GENET_MIB_RX("rx_pkts", mib.rx.pkt),
+	STAT_GENET_MIB_RX("rx_bytes", mib.rx.bytes),
+	STAT_GENET_MIB_RX("rx_multicast", mib.rx.mca),
+	STAT_GENET_MIB_RX("rx_broadcast", mib.rx.bca),
+	STAT_GENET_MIB_RX("rx_fcs", mib.rx.fcs),
+	STAT_GENET_MIB_RX("rx_control", mib.rx.cf),
+	STAT_GENET_MIB_RX("rx_pause", mib.rx.pf),
+	STAT_GENET_MIB_RX("rx_unknown", mib.rx.uo),
+	STAT_GENET_MIB_RX("rx_align", mib.rx.aln),
+	STAT_GENET_MIB_RX("rx_outrange", mib.rx.flr),
+	STAT_GENET_MIB_RX("rx_code", mib.rx.cde),
+	STAT_GENET_MIB_RX("rx_carrier", mib.rx.fcr),
+	STAT_GENET_MIB_RX("rx_oversize", mib.rx.ovr),
+	STAT_GENET_MIB_RX("rx_jabber", mib.rx.jbr),
+	STAT_GENET_MIB_RX("rx_mtu_err", mib.rx.mtue),
+	STAT_GENET_MIB_RX("rx_good_pkts", mib.rx.pok),
+	STAT_GENET_MIB_RX("rx_unicast", mib.rx.uc),
+	STAT_GENET_MIB_RX("rx_ppp", mib.rx.ppp),
+	STAT_GENET_MIB_RX("rx_crc", mib.rx.rcrc),
+	/* UniMAC TSV counters */
+	STAT_GENET_MIB_TX("tx_64_octets", mib.tx.pkt_cnt.cnt_64),
+	STAT_GENET_MIB_TX("tx_65_127_oct", mib.tx.pkt_cnt.cnt_127),
+	STAT_GENET_MIB_TX("tx_128_255_oct", mib.tx.pkt_cnt.cnt_255),
+	STAT_GENET_MIB_TX("tx_256_511_oct", mib.tx.pkt_cnt.cnt_511),
+	STAT_GENET_MIB_TX("tx_512_1023_oct", mib.tx.pkt_cnt.cnt_1023),
+	STAT_GENET_MIB_TX("tx_1024_1518_oct", mib.tx.pkt_cnt.cnt_1518),
+	STAT_GENET_MIB_TX("tx_vlan_1519_1522_oct", mib.tx.pkt_cnt.cnt_mgv),
+	STAT_GENET_MIB_TX("tx_1522_2047_oct", mib.tx.pkt_cnt.cnt_2047),
+	STAT_GENET_MIB_TX("tx_2048_4095_oct", mib.tx.pkt_cnt.cnt_4095),
+	STAT_GENET_MIB_TX("tx_4096_9216_oct", mib.tx.pkt_cnt.cnt_9216),
+	STAT_GENET_MIB_TX("tx_pkts", mib.tx.pkts),
+	STAT_GENET_MIB_TX("tx_multicast", mib.tx.mca),
+	STAT_GENET_MIB_TX("tx_broadcast", mib.tx.bca),
+	STAT_GENET_MIB_TX("tx_pause", mib.tx.pf),
+	STAT_GENET_MIB_TX("tx_control", mib.tx.cf),
+	STAT_GENET_MIB_TX("tx_fcs_err", mib.tx.fcs),
+	STAT_GENET_MIB_TX("tx_oversize", mib.tx.ovr),
+	STAT_GENET_MIB_TX("tx_defer", mib.tx.drf),
+	STAT_GENET_MIB_TX("tx_excess_defer", mib.tx.edf),
+	STAT_GENET_MIB_TX("tx_single_col", mib.tx.scl),
+	STAT_GENET_MIB_TX("tx_multi_col", mib.tx.mcl),
+	STAT_GENET_MIB_TX("tx_late_col", mib.tx.lcl),
+	STAT_GENET_MIB_TX("tx_excess_col", mib.tx.ecl),
+	STAT_GENET_MIB_TX("tx_frags", mib.tx.frg),
+	STAT_GENET_MIB_TX("tx_total_col", mib.tx.ncl),
+	STAT_GENET_MIB_TX("tx_jabber", mib.tx.jbr),
+	STAT_GENET_MIB_TX("tx_bytes", mib.tx.bytes),
+	STAT_GENET_MIB_TX("tx_good_pkts", mib.tx.pok),
+	STAT_GENET_MIB_TX("tx_unicast", mib.tx.uc),
+	/* UniMAC RUNT counters */
+	STAT_GENET_RUNT("rx_runt_pkts", mib.rx_runt_cnt),
+	STAT_GENET_RUNT("rx_runt_valid_fcs", mib.rx_runt_fcs),
+	STAT_GENET_RUNT("rx_runt_inval_fcs_align", mib.rx_runt_fcs_align),
+	STAT_GENET_RUNT("rx_runt_bytes", mib.rx_runt_bytes),
+	/* Misc UniMAC counters */
+	STAT_GENET_MISC("rbuf_ovflow_cnt", mib.rbuf_ovflow_cnt,
+			UMAC_RBUF_OVFL_CNT_V1),
+	STAT_GENET_MISC("rbuf_err_cnt", mib.rbuf_err_cnt,
+			UMAC_RBUF_ERR_CNT_V1),
+	STAT_GENET_MISC("mdf_err_cnt", mib.mdf_err_cnt, UMAC_MDF_ERR_CNT),
+	STAT_GENET_SOFT_MIB("alloc_rx_buff_failed", mib.alloc_rx_buff_failed),
+	STAT_GENET_SOFT_MIB("rx_dma_failed", mib.rx_dma_failed),
+	STAT_GENET_SOFT_MIB("tx_dma_failed", mib.tx_dma_failed),
+	STAT_GENET_SOFT_MIB("tx_realloc_tsb", mib.tx_realloc_tsb),
+	STAT_GENET_SOFT_MIB("tx_realloc_tsb_failed",
+			    mib.tx_realloc_tsb_failed),
+	/* Per TX queues */
+	STAT_GENET_Q(0),
+	STAT_GENET_Q(1),
+	STAT_GENET_Q(2),
+	STAT_GENET_Q(3),
+	STAT_GENET_Q(16),
+};
+
+#define BCMGENET_STATS_LEN	ARRAY_SIZE(bcmgenet_gstrings_stats)
+
+static void bcmgenet_get_drvinfo(struct net_device *dev,
+				 struct ethtool_drvinfo *info)
+{
+	strscpy(info->driver, "bcmgenet", sizeof(info->driver));
+}
+
+static int bcmgenet_get_sset_count(struct net_device *dev, int string_set)
+{
+	switch (string_set) {
+	case ETH_SS_STATS:
+		return BCMGENET_STATS_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void bcmgenet_get_strings(struct net_device *dev, u32 stringset,
+				 u8 *data)
+{
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		for (i = 0; i < BCMGENET_STATS_LEN; i++) {
+			memcpy(data + i * ETH_GSTRING_LEN,
+			       bcmgenet_gstrings_stats[i].stat_string,
+			       ETH_GSTRING_LEN);
+		}
+		break;
+	}
+}
+
+static u32 bcmgenet_update_stat_misc(struct bcmgenet_priv *priv, u16 offset)
+{
+	u16 new_offset;
+	u32 val;
+
+	switch (offset) {
+	case UMAC_RBUF_OVFL_CNT_V1:
+		if (GENET_IS_V2(priv))
+			new_offset = RBUF_OVFL_CNT_V2;
+		else
+			new_offset = RBUF_OVFL_CNT_V3PLUS;
+
+		val = bcmgenet_rbuf_readl(priv,	new_offset);
+		/* clear if overflowed */
+		if (val == ~0)
+			bcmgenet_rbuf_writel(priv, 0, new_offset);
+		break;
+	case UMAC_RBUF_ERR_CNT_V1:
+		if (GENET_IS_V2(priv))
+			new_offset = RBUF_ERR_CNT_V2;
+		else
+			new_offset = RBUF_ERR_CNT_V3PLUS;
+
+		val = bcmgenet_rbuf_readl(priv,	new_offset);
+		/* clear if overflowed */
+		if (val == ~0)
+			bcmgenet_rbuf_writel(priv, 0, new_offset);
+		break;
+	default:
+		val = bcmgenet_umac_readl(priv, offset);
+		/* clear if overflowed */
+		if (val == ~0)
+			bcmgenet_umac_writel(priv, 0, offset);
+		break;
+	}
+
+	return val;
+}
+
+static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv)
+{
+	int i, j = 0;
+
+	for (i = 0; i < BCMGENET_STATS_LEN; i++) {
+		const struct bcmgenet_stats *s;
+		u8 offset = 0;
+		u32 val = 0;
+		char *p;
+
+		s = &bcmgenet_gstrings_stats[i];
+		switch (s->type) {
+		case BCMGENET_STAT_NETDEV:
+		case BCMGENET_STAT_SOFT:
+			continue;
+		case BCMGENET_STAT_RUNT:
+			offset += BCMGENET_STAT_OFFSET;
+			fallthrough;
+		case BCMGENET_STAT_MIB_TX:
+			offset += BCMGENET_STAT_OFFSET;
+			fallthrough;
+		case BCMGENET_STAT_MIB_RX:
+			val = bcmgenet_umac_readl(priv,
+						  UMAC_MIB_START + j + offset);
+			offset = 0;	/* Reset Offset */
+			break;
+		case BCMGENET_STAT_MISC:
+			if (GENET_IS_V1(priv)) {
+				val = bcmgenet_umac_readl(priv, s->reg_offset);
+				/* clear if overflowed */
+				if (val == ~0)
+					bcmgenet_umac_writel(priv, 0,
+							     s->reg_offset);
+			} else {
+				val = bcmgenet_update_stat_misc(priv,
+								s->reg_offset);
+			}
+			break;
+		}
+
+		j += s->stat_sizeof;
+		p = (char *)priv + s->stat_offset;
+		*(u32 *)p = val;
+	}
+}
+
+static void bcmgenet_get_ethtool_stats(struct net_device *dev,
+				       struct ethtool_stats *stats,
+				       u64 *data)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int i;
+
+	if (netif_running(dev))
+		bcmgenet_update_mib_counters(priv);
+
+	dev->netdev_ops->ndo_get_stats(dev);
+
+	for (i = 0; i < BCMGENET_STATS_LEN; i++) {
+		const struct bcmgenet_stats *s;
+		char *p;
+
+		s = &bcmgenet_gstrings_stats[i];
+		if (s->type == BCMGENET_STAT_NETDEV)
+			p = (char *)&dev->stats;
+		else
+			p = (char *)priv;
+		p += s->stat_offset;
+		if (sizeof(unsigned long) != sizeof(u32) &&
+		    s->stat_sizeof == sizeof(unsigned long))
+			data[i] = *(unsigned long *)p;
+		else
+			data[i] = *(u32 *)p;
+	}
+}
+
+void bcmgenet_eee_enable_set(struct net_device *dev, bool enable,
+			     bool tx_lpi_enabled)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 off = priv->hw_params->tbuf_offset + TBUF_ENERGY_CTRL;
+	u32 reg;
+
+	if (enable && !priv->clk_eee_enabled) {
+		clk_prepare_enable(priv->clk_eee);
+		priv->clk_eee_enabled = true;
+	}
+
+	reg = bcmgenet_umac_readl(priv, UMAC_EEE_CTRL);
+	if (enable)
+		reg |= EEE_EN;
+	else
+		reg &= ~EEE_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_EEE_CTRL);
+
+	/* Enable EEE and switch to a 27Mhz clock automatically */
+	reg = bcmgenet_readl(priv->base + off);
+	if (tx_lpi_enabled)
+		reg |= TBUF_EEE_EN | TBUF_PM_EN;
+	else
+		reg &= ~(TBUF_EEE_EN | TBUF_PM_EN);
+	bcmgenet_writel(reg, priv->base + off);
+
+	/* Do the same for thing for RBUF */
+	reg = bcmgenet_rbuf_readl(priv, RBUF_ENERGY_CTRL);
+	if (enable)
+		reg |= RBUF_EEE_EN | RBUF_PM_EN;
+	else
+		reg &= ~(RBUF_EEE_EN | RBUF_PM_EN);
+	bcmgenet_rbuf_writel(priv, reg, RBUF_ENERGY_CTRL);
+
+	if (!enable && priv->clk_eee_enabled) {
+		clk_disable_unprepare(priv->clk_eee);
+		priv->clk_eee_enabled = false;
+	}
+
+	priv->eee.eee_enabled = enable;
+	priv->eee.eee_active = enable;
+	priv->eee.tx_lpi_enabled = tx_lpi_enabled;
+}
+
+static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct ethtool_eee *p = &priv->eee;
+
+	if (GENET_IS_V1(priv))
+		return -EOPNOTSUPP;
+
+	if (!dev->phydev)
+		return -ENODEV;
+
+	e->eee_enabled = p->eee_enabled;
+	e->eee_active = p->eee_active;
+	e->tx_lpi_enabled = p->tx_lpi_enabled;
+	e->tx_lpi_timer = bcmgenet_umac_readl(priv, UMAC_EEE_LPI_TIMER);
+
+	return phy_ethtool_get_eee(dev->phydev, e);
+}
+
+static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct ethtool_eee *p = &priv->eee;
+
+	if (GENET_IS_V1(priv))
+		return -EOPNOTSUPP;
+
+	if (!dev->phydev)
+		return -ENODEV;
+
+	p->eee_enabled = e->eee_enabled;
+
+	if (!p->eee_enabled) {
+		bcmgenet_eee_enable_set(dev, false, false);
+	} else {
+		p->eee_active = phy_init_eee(dev->phydev, false) >= 0;
+		bcmgenet_umac_writel(priv, e->tx_lpi_timer, UMAC_EEE_LPI_TIMER);
+		bcmgenet_eee_enable_set(dev, p->eee_active, e->tx_lpi_enabled);
+	}
+
+	return phy_ethtool_set_eee(dev->phydev, e);
+}
+
+static int bcmgenet_validate_flow(struct net_device *dev,
+				  struct ethtool_rxnfc *cmd)
+{
+	struct ethtool_usrip4_spec *l4_mask;
+	struct ethhdr *eth_mask;
+
+	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES) {
+		netdev_err(dev, "rxnfc: Invalid location (%d)\n",
+			   cmd->fs.location);
+		return -EINVAL;
+	}
+
+	switch (cmd->fs.flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
+	case IP_USER_FLOW:
+		l4_mask = &cmd->fs.m_u.usr_ip4_spec;
+		/* don't allow mask which isn't valid */
+		if (VALIDATE_MASK(l4_mask->ip4src) ||
+		    VALIDATE_MASK(l4_mask->ip4dst) ||
+		    VALIDATE_MASK(l4_mask->l4_4_bytes) ||
+		    VALIDATE_MASK(l4_mask->proto) ||
+		    VALIDATE_MASK(l4_mask->ip_ver) ||
+		    VALIDATE_MASK(l4_mask->tos)) {
+			netdev_err(dev, "rxnfc: Unsupported mask\n");
+			return -EINVAL;
+		}
+		break;
+	case ETHER_FLOW:
+		eth_mask = &cmd->fs.m_u.ether_spec;
+		/* don't allow mask which isn't valid */
+		if (VALIDATE_MASK(eth_mask->h_dest) ||
+		    VALIDATE_MASK(eth_mask->h_source) ||
+		    VALIDATE_MASK(eth_mask->h_proto)) {
+			netdev_err(dev, "rxnfc: Unsupported mask\n");
+			return -EINVAL;
+		}
+		break;
+	default:
+		netdev_err(dev, "rxnfc: Unsupported flow type (0x%x)\n",
+			   cmd->fs.flow_type);
+		return -EINVAL;
+	}
+
+	if ((cmd->fs.flow_type & FLOW_EXT)) {
+		/* don't allow mask which isn't valid */
+		if (VALIDATE_MASK(cmd->fs.m_ext.vlan_etype) ||
+		    VALIDATE_MASK(cmd->fs.m_ext.vlan_tci)) {
+			netdev_err(dev, "rxnfc: Unsupported mask\n");
+			return -EINVAL;
+		}
+		if (cmd->fs.m_ext.data[0] || cmd->fs.m_ext.data[1]) {
+			netdev_err(dev, "rxnfc: user-def not supported\n");
+			return -EINVAL;
+		}
+	}
+
+	if ((cmd->fs.flow_type & FLOW_MAC_EXT)) {
+		/* don't allow mask which isn't valid */
+		if (VALIDATE_MASK(cmd->fs.m_ext.h_dest)) {
+			netdev_err(dev, "rxnfc: Unsupported mask\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static int bcmgenet_insert_flow(struct net_device *dev,
+				struct ethtool_rxnfc *cmd)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rxnfc_rule *loc_rule;
+	int err;
+
+	if (priv->hw_params->hfb_filter_size < 128) {
+		netdev_err(dev, "rxnfc: Not supported by this device\n");
+		return -EINVAL;
+	}
+
+	if (cmd->fs.ring_cookie > priv->hw_params->rx_queues &&
+	    cmd->fs.ring_cookie != RX_CLS_FLOW_WAKE) {
+		netdev_err(dev, "rxnfc: Unsupported action (%llu)\n",
+			   cmd->fs.ring_cookie);
+		return -EINVAL;
+	}
+
+	err = bcmgenet_validate_flow(dev, cmd);
+	if (err)
+		return err;
+
+	loc_rule = &priv->rxnfc_rules[cmd->fs.location];
+	if (loc_rule->state == BCMGENET_RXNFC_STATE_ENABLED)
+		bcmgenet_hfb_disable_filter(priv, cmd->fs.location);
+	if (loc_rule->state != BCMGENET_RXNFC_STATE_UNUSED) {
+		list_del(&loc_rule->list);
+		bcmgenet_hfb_clear_filter(priv, cmd->fs.location);
+	}
+	loc_rule->state = BCMGENET_RXNFC_STATE_UNUSED;
+	memcpy(&loc_rule->fs, &cmd->fs,
+	       sizeof(struct ethtool_rx_flow_spec));
+
+	bcmgenet_hfb_create_rxnfc_filter(priv, loc_rule);
+
+	list_add_tail(&loc_rule->list, &priv->rxnfc_list);
+
+	return 0;
+}
+
+static int bcmgenet_delete_flow(struct net_device *dev,
+				struct ethtool_rxnfc *cmd)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rxnfc_rule *rule;
+	int err = 0;
+
+	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
+		return -EINVAL;
+
+	rule = &priv->rxnfc_rules[cmd->fs.location];
+	if (rule->state == BCMGENET_RXNFC_STATE_UNUSED) {
+		err =  -ENOENT;
+		goto out;
+	}
+
+	if (rule->state == BCMGENET_RXNFC_STATE_ENABLED)
+		bcmgenet_hfb_disable_filter(priv, cmd->fs.location);
+	if (rule->state != BCMGENET_RXNFC_STATE_UNUSED) {
+		list_del(&rule->list);
+		bcmgenet_hfb_clear_filter(priv, cmd->fs.location);
+	}
+	rule->state = BCMGENET_RXNFC_STATE_UNUSED;
+	memset(&rule->fs, 0, sizeof(struct ethtool_rx_flow_spec));
+
+out:
+	return err;
+}
+
+static int bcmgenet_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int err = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_SRXCLSRLINS:
+		err = bcmgenet_insert_flow(dev, cmd);
+		break;
+	case ETHTOOL_SRXCLSRLDEL:
+		err = bcmgenet_delete_flow(dev, cmd);
+		break;
+	default:
+		netdev_warn(priv->dev, "Unsupported ethtool command. (%d)\n",
+			    cmd->cmd);
+		return -EINVAL;
+	}
+
+	return err;
+}
+
+static int bcmgenet_get_flow(struct net_device *dev, struct ethtool_rxnfc *cmd,
+			     int loc)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rxnfc_rule *rule;
+	int err = 0;
+
+	if (loc < 0 || loc >= MAX_NUM_OF_FS_RULES)
+		return -EINVAL;
+
+	rule = &priv->rxnfc_rules[loc];
+	if (rule->state == BCMGENET_RXNFC_STATE_UNUSED)
+		err = -ENOENT;
+	else
+		memcpy(&cmd->fs, &rule->fs,
+		       sizeof(struct ethtool_rx_flow_spec));
+
+	return err;
+}
+
+static int bcmgenet_get_num_flows(struct bcmgenet_priv *priv)
+{
+	struct list_head *pos;
+	int res = 0;
+
+	list_for_each(pos, &priv->rxnfc_list)
+		res++;
+
+	return res;
+}
+
+static int bcmgenet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
+			      u32 *rule_locs)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rxnfc_rule *rule;
+	int err = 0;
+	int i = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXRINGS:
+		cmd->data = priv->hw_params->rx_queues ?: 1;
+		break;
+	case ETHTOOL_GRXCLSRLCNT:
+		cmd->rule_cnt = bcmgenet_get_num_flows(priv);
+		cmd->data = MAX_NUM_OF_FS_RULES;
+		break;
+	case ETHTOOL_GRXCLSRULE:
+		err = bcmgenet_get_flow(dev, cmd, cmd->fs.location);
+		break;
+	case ETHTOOL_GRXCLSRLALL:
+		list_for_each_entry(rule, &priv->rxnfc_list, list)
+			if (i < cmd->rule_cnt)
+				rule_locs[i++] = rule->fs.location;
+		cmd->rule_cnt = i;
+		cmd->data = MAX_NUM_OF_FS_RULES;
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+/* standard ethtool support functions. */
+static const struct ethtool_ops bcmgenet_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
+				     ETHTOOL_COALESCE_MAX_FRAMES |
+				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
+	.begin			= bcmgenet_begin,
+	.complete		= bcmgenet_complete,
+	.get_strings		= bcmgenet_get_strings,
+	.get_sset_count		= bcmgenet_get_sset_count,
+	.get_ethtool_stats	= bcmgenet_get_ethtool_stats,
+	.get_drvinfo		= bcmgenet_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= bcmgenet_get_msglevel,
+	.set_msglevel		= bcmgenet_set_msglevel,
+	.get_wol		= bcmgenet_get_wol,
+	.set_wol		= bcmgenet_set_wol,
+	.get_eee		= bcmgenet_get_eee,
+	.set_eee		= bcmgenet_set_eee,
+	.nway_reset		= phy_ethtool_nway_reset,
+	.get_coalesce		= bcmgenet_get_coalesce,
+	.set_coalesce		= bcmgenet_set_coalesce,
+	.get_link_ksettings	= bcmgenet_get_link_ksettings,
+	.set_link_ksettings	= bcmgenet_set_link_ksettings,
+	.get_ts_info		= ethtool_op_get_ts_info,
+	.get_rxnfc		= bcmgenet_get_rxnfc,
+	.set_rxnfc		= bcmgenet_set_rxnfc,
+	.get_pauseparam		= bcmgenet_get_pauseparam,
+	.set_pauseparam		= bcmgenet_set_pauseparam,
+};
+
+/* Power down the unimac, based on mode. */
+static int bcmgenet_power_down(struct bcmgenet_priv *priv,
+				enum bcmgenet_power_mode mode)
+{
+	int ret = 0;
+	u32 reg;
+
+	switch (mode) {
+	case GENET_POWER_CABLE_SENSE:
+		phy_detach(priv->dev->phydev);
+		break;
+
+	case GENET_POWER_WOL_MAGIC:
+		ret = bcmgenet_wol_power_down_cfg(priv, mode);
+		break;
+
+	case GENET_POWER_PASSIVE:
+		/* Power down LED */
+		if (priv->hw_params->flags & GENET_HAS_EXT) {
+			reg = bcmgenet_ext_readl(priv, EXT_EXT_PWR_MGMT);
+			if (GENET_IS_V5(priv) && !priv->ephy_16nm)
+				reg |= EXT_PWR_DOWN_PHY_EN |
+				       EXT_PWR_DOWN_PHY_RD |
+				       EXT_PWR_DOWN_PHY_SD |
+				       EXT_PWR_DOWN_PHY_RX |
+				       EXT_PWR_DOWN_PHY_TX |
+				       EXT_IDDQ_GLBL_PWR;
+			else
+				reg |= EXT_PWR_DOWN_PHY;
+
+			reg |= (EXT_PWR_DOWN_DLL | EXT_PWR_DOWN_BIAS);
+			bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
+
+			bcmgenet_phy_power_set(priv->dev, false);
+		}
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static void bcmgenet_power_up(struct bcmgenet_priv *priv,
+			      enum bcmgenet_power_mode mode)
+{
+	u32 reg;
+
+	if (!(priv->hw_params->flags & GENET_HAS_EXT))
+		return;
+
+	reg = bcmgenet_ext_readl(priv, EXT_EXT_PWR_MGMT);
+
+	switch (mode) {
+	case GENET_POWER_PASSIVE:
+		reg &= ~(EXT_PWR_DOWN_DLL | EXT_PWR_DOWN_BIAS |
+			 EXT_ENERGY_DET_MASK);
+		if (GENET_IS_V5(priv) && !priv->ephy_16nm) {
+			reg &= ~(EXT_PWR_DOWN_PHY_EN |
+				 EXT_PWR_DOWN_PHY_RD |
+				 EXT_PWR_DOWN_PHY_SD |
+				 EXT_PWR_DOWN_PHY_RX |
+				 EXT_PWR_DOWN_PHY_TX |
+				 EXT_IDDQ_GLBL_PWR);
+			reg |=   EXT_PHY_RESET;
+			bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
+			mdelay(1);
+
+			reg &=  ~EXT_PHY_RESET;
+		} else {
+			reg &= ~EXT_PWR_DOWN_PHY;
+			reg |= EXT_PWR_DN_EN_LD;
+		}
+		bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
+		bcmgenet_phy_power_set(priv->dev, true);
+		break;
+
+	case GENET_POWER_CABLE_SENSE:
+		/* enable APD */
+		if (!GENET_IS_V5(priv)) {
+			reg |= EXT_PWR_DN_EN_LD;
+			bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
+		}
+		break;
+	case GENET_POWER_WOL_MAGIC:
+		bcmgenet_wol_power_up_cfg(priv, mode);
+		return;
+	default:
+		break;
+	}
+}
+
+static struct enet_cb *bcmgenet_get_txcb(struct bcmgenet_priv *priv,
+					 struct bcmgenet_tx_ring *ring)
+{
+	struct enet_cb *tx_cb_ptr;
+
+	tx_cb_ptr = ring->cbs;
+	tx_cb_ptr += ring->write_ptr - ring->cb_ptr;
+
+	/* Advancing local write pointer */
+	if (ring->write_ptr == ring->end_ptr)
+		ring->write_ptr = ring->cb_ptr;
+	else
+		ring->write_ptr++;
+
+	return tx_cb_ptr;
+}
+
+static struct enet_cb *bcmgenet_put_txcb(struct bcmgenet_priv *priv,
+					 struct bcmgenet_tx_ring *ring)
+{
+	struct enet_cb *tx_cb_ptr;
+
+	tx_cb_ptr = ring->cbs;
+	tx_cb_ptr += ring->write_ptr - ring->cb_ptr;
+
+	/* Rewinding local write pointer */
+	if (ring->write_ptr == ring->cb_ptr)
+		ring->write_ptr = ring->end_ptr;
+	else
+		ring->write_ptr--;
+
+	return tx_cb_ptr;
+}
+
+static inline void bcmgenet_rx_ring16_int_disable(struct bcmgenet_rx_ring *ring)
+{
+	bcmgenet_intrl2_0_writel(ring->priv, UMAC_IRQ_RXDMA_DONE,
+				 INTRL2_CPU_MASK_SET);
+}
+
+static inline void bcmgenet_rx_ring16_int_enable(struct bcmgenet_rx_ring *ring)
+{
+	bcmgenet_intrl2_0_writel(ring->priv, UMAC_IRQ_RXDMA_DONE,
+				 INTRL2_CPU_MASK_CLEAR);
+}
+
+static inline void bcmgenet_rx_ring_int_disable(struct bcmgenet_rx_ring *ring)
+{
+	bcmgenet_intrl2_1_writel(ring->priv,
+				 1 << (UMAC_IRQ1_RX_INTR_SHIFT + ring->index),
+				 INTRL2_CPU_MASK_SET);
+}
+
+static inline void bcmgenet_rx_ring_int_enable(struct bcmgenet_rx_ring *ring)
+{
+	bcmgenet_intrl2_1_writel(ring->priv,
+				 1 << (UMAC_IRQ1_RX_INTR_SHIFT + ring->index),
+				 INTRL2_CPU_MASK_CLEAR);
+}
+
+static inline void bcmgenet_tx_ring16_int_disable(struct bcmgenet_tx_ring *ring)
+{
+	bcmgenet_intrl2_0_writel(ring->priv, UMAC_IRQ_TXDMA_DONE,
+				 INTRL2_CPU_MASK_SET);
+}
+
+static inline void bcmgenet_tx_ring16_int_enable(struct bcmgenet_tx_ring *ring)
+{
+	bcmgenet_intrl2_0_writel(ring->priv, UMAC_IRQ_TXDMA_DONE,
+				 INTRL2_CPU_MASK_CLEAR);
+}
+
+static inline void bcmgenet_tx_ring_int_enable(struct bcmgenet_tx_ring *ring)
+{
+	bcmgenet_intrl2_1_writel(ring->priv, 1 << ring->index,
+				 INTRL2_CPU_MASK_CLEAR);
+}
+
+static inline void bcmgenet_tx_ring_int_disable(struct bcmgenet_tx_ring *ring)
+{
+	bcmgenet_intrl2_1_writel(ring->priv, 1 << ring->index,
+				 INTRL2_CPU_MASK_SET);
+}
+
+/* Simple helper to free a transmit control block's resources
+ * Returns an skb when the last transmit control block associated with the
+ * skb is freed.  The skb should be freed by the caller if necessary.
+ */
+static struct sk_buff *bcmgenet_free_tx_cb(struct device *dev,
+					   struct enet_cb *cb)
+{
+	struct sk_buff *skb;
+
+	skb = cb->skb;
+
+	if (skb) {
+		cb->skb = NULL;
+		if (cb == GENET_CB(skb)->first_cb)
+			dma_unmap_single(dev, dma_unmap_addr(cb, dma_addr),
+					 dma_unmap_len(cb, dma_len),
+					 DMA_TO_DEVICE);
+		else
+			dma_unmap_page(dev, dma_unmap_addr(cb, dma_addr),
+				       dma_unmap_len(cb, dma_len),
+				       DMA_TO_DEVICE);
+		dma_unmap_addr_set(cb, dma_addr, 0);
+
+		if (cb == GENET_CB(skb)->last_cb)
+			return skb;
+
+	} else if (dma_unmap_addr(cb, dma_addr)) {
+		dma_unmap_page(dev,
+			       dma_unmap_addr(cb, dma_addr),
+			       dma_unmap_len(cb, dma_len),
+			       DMA_TO_DEVICE);
+		dma_unmap_addr_set(cb, dma_addr, 0);
+	}
+
+	return NULL;
+}
+
+/* Simple helper to free a receive control block's resources */
+static struct sk_buff *bcmgenet_free_rx_cb(struct device *dev,
+					   struct enet_cb *cb)
+{
+	struct sk_buff *skb;
+
+	skb = cb->skb;
+	cb->skb = NULL;
+
+	if (dma_unmap_addr(cb, dma_addr)) {
+		dma_unmap_single(dev, dma_unmap_addr(cb, dma_addr),
+				 dma_unmap_len(cb, dma_len), DMA_FROM_DEVICE);
+		dma_unmap_addr_set(cb, dma_addr, 0);
+	}
+
+	return skb;
+}
+
+/* Unlocked version of the reclaim routine */
+static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev,
+					  struct bcmgenet_tx_ring *ring)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	unsigned int txbds_processed = 0;
+	unsigned int bytes_compl = 0;
+	unsigned int pkts_compl = 0;
+	unsigned int txbds_ready;
+	unsigned int c_index;
+	struct sk_buff *skb;
+
+	/* Clear status before servicing to reduce spurious interrupts */
+	if (ring->index == DESC_INDEX)
+		bcmgenet_intrl2_0_writel(priv, UMAC_IRQ_TXDMA_DONE,
+					 INTRL2_CPU_CLEAR);
+	else
+		bcmgenet_intrl2_1_writel(priv, (1 << ring->index),
+					 INTRL2_CPU_CLEAR);
+
+	/* Compute how many buffers are transmitted since last xmit call */
+	c_index = bcmgenet_tdma_ring_readl(priv, ring->index, TDMA_CONS_INDEX)
+		& DMA_C_INDEX_MASK;
+	txbds_ready = (c_index - ring->c_index) & DMA_C_INDEX_MASK;
+
+	netif_dbg(priv, tx_done, dev,
+		  "%s ring=%d old_c_index=%u c_index=%u txbds_ready=%u\n",
+		  __func__, ring->index, ring->c_index, c_index, txbds_ready);
+
+	/* Reclaim transmitted buffers */
+	while (txbds_processed < txbds_ready) {
+		skb = bcmgenet_free_tx_cb(&priv->pdev->dev,
+					  &priv->tx_cbs[ring->clean_ptr]);
+		if (skb) {
+			pkts_compl++;
+			bytes_compl += GENET_CB(skb)->bytes_sent;
+			dev_consume_skb_any(skb);
+		}
+
+		txbds_processed++;
+		if (likely(ring->clean_ptr < ring->end_ptr))
+			ring->clean_ptr++;
+		else
+			ring->clean_ptr = ring->cb_ptr;
+	}
+
+	ring->free_bds += txbds_processed;
+	ring->c_index = c_index;
+
+	ring->packets += pkts_compl;
+	ring->bytes += bytes_compl;
+
+	netdev_tx_completed_queue(netdev_get_tx_queue(dev, ring->queue),
+				  pkts_compl, bytes_compl);
+
+	return txbds_processed;
+}
+
+static unsigned int bcmgenet_tx_reclaim(struct net_device *dev,
+				struct bcmgenet_tx_ring *ring)
+{
+	unsigned int released;
+
+	spin_lock_bh(&ring->lock);
+	released = __bcmgenet_tx_reclaim(dev, ring);
+	spin_unlock_bh(&ring->lock);
+
+	return released;
+}
+
+static int bcmgenet_tx_poll(struct napi_struct *napi, int budget)
+{
+	struct bcmgenet_tx_ring *ring =
+		container_of(napi, struct bcmgenet_tx_ring, napi);
+	unsigned int work_done = 0;
+	struct netdev_queue *txq;
+
+	spin_lock(&ring->lock);
+	work_done = __bcmgenet_tx_reclaim(ring->priv->dev, ring);
+	if (ring->free_bds > (MAX_SKB_FRAGS + 1)) {
+		txq = netdev_get_tx_queue(ring->priv->dev, ring->queue);
+		netif_tx_wake_queue(txq);
+	}
+	spin_unlock(&ring->lock);
+
+	if (work_done == 0) {
+		napi_complete(napi);
+		ring->int_enable(ring);
+
+		return 0;
+	}
+
+	return budget;
+}
+
+static void bcmgenet_tx_reclaim_all(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int i;
+
+	if (netif_is_multiqueue(dev)) {
+		for (i = 0; i < priv->hw_params->tx_queues; i++)
+			bcmgenet_tx_reclaim(dev, &priv->tx_rings[i]);
+	}
+
+	bcmgenet_tx_reclaim(dev, &priv->tx_rings[DESC_INDEX]);
+}
+
+/* Reallocate the SKB to put enough headroom in front of it and insert
+ * the transmit checksum offsets in the descriptors
+ */
+static struct sk_buff *bcmgenet_add_tsb(struct net_device *dev,
+					struct sk_buff *skb)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct status_64 *status = NULL;
+	struct sk_buff *new_skb;
+	u16 offset;
+	u8 ip_proto;
+	__be16 ip_ver;
+	u32 tx_csum_info;
+
+	if (unlikely(skb_headroom(skb) < sizeof(*status))) {
+		/* If 64 byte status block enabled, must make sure skb has
+		 * enough headroom for us to insert 64B status block.
+		 */
+		new_skb = skb_realloc_headroom(skb, sizeof(*status));
+		if (!new_skb) {
+			dev_kfree_skb_any(skb);
+			priv->mib.tx_realloc_tsb_failed++;
+			dev->stats.tx_dropped++;
+			return NULL;
+		}
+		dev_consume_skb_any(skb);
+		skb = new_skb;
+		priv->mib.tx_realloc_tsb++;
+	}
+
+	skb_push(skb, sizeof(*status));
+	status = (struct status_64 *)skb->data;
+
+	if (skb->ip_summed  == CHECKSUM_PARTIAL) {
+		ip_ver = skb->protocol;
+		switch (ip_ver) {
+		case htons(ETH_P_IP):
+			ip_proto = ip_hdr(skb)->protocol;
+			break;
+		case htons(ETH_P_IPV6):
+			ip_proto = ipv6_hdr(skb)->nexthdr;
+			break;
+		default:
+			/* don't use UDP flag */
+			ip_proto = 0;
+			break;
+		}
+
+		offset = skb_checksum_start_offset(skb) - sizeof(*status);
+		tx_csum_info = (offset << STATUS_TX_CSUM_START_SHIFT) |
+				(offset + skb->csum_offset) |
+				STATUS_TX_CSUM_LV;
+
+		/* Set the special UDP flag for UDP */
+		if (ip_proto == IPPROTO_UDP)
+			tx_csum_info |= STATUS_TX_CSUM_PROTO_UDP;
+
+		status->tx_csum_info = tx_csum_info;
+	}
+
+	return skb;
+}
+
+static void bcmgenet_hide_tsb(struct sk_buff *skb)
+{
+	__skb_pull(skb, sizeof(struct status_64));
+}
+
+static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device *kdev = &priv->pdev->dev;
+	struct bcmgenet_tx_ring *ring = NULL;
+	struct enet_cb *tx_cb_ptr;
+	struct netdev_queue *txq;
+	int nr_frags, index;
+	dma_addr_t mapping;
+	unsigned int size;
+	skb_frag_t *frag;
+	u32 len_stat;
+	int ret;
+	int i;
+
+	index = skb_get_queue_mapping(skb);
+	/* Mapping strategy:
+	 * queue_mapping = 0, unclassified, packet xmited through ring16
+	 * queue_mapping = 1, goes to ring 0. (highest priority queue
+	 * queue_mapping = 2, goes to ring 1.
+	 * queue_mapping = 3, goes to ring 2.
+	 * queue_mapping = 4, goes to ring 3.
+	 */
+	if (index == 0)
+		index = DESC_INDEX;
+	else
+		index -= 1;
+
+	ring = &priv->tx_rings[index];
+	txq = netdev_get_tx_queue(dev, ring->queue);
+
+	nr_frags = skb_shinfo(skb)->nr_frags;
+
+	spin_lock(&ring->lock);
+	if (ring->free_bds <= (nr_frags + 1)) {
+		if (!netif_tx_queue_stopped(txq)) {
+			netif_tx_stop_queue(txq);
+			netdev_err(dev,
+				   "%s: tx ring %d full when queue %d awake\n",
+				   __func__, index, ring->queue);
+		}
+		ret = NETDEV_TX_BUSY;
+		goto out;
+	}
+
+	/* Retain how many bytes will be sent on the wire, without TSB inserted
+	 * by transmit checksum offload
+	 */
+	GENET_CB(skb)->bytes_sent = skb->len;
+
+	/* add the Transmit Status Block */
+	skb = bcmgenet_add_tsb(dev, skb);
+	if (!skb) {
+		ret = NETDEV_TX_OK;
+		goto out;
+	}
+
+	for (i = 0; i <= nr_frags; i++) {
+		tx_cb_ptr = bcmgenet_get_txcb(priv, ring);
+
+		BUG_ON(!tx_cb_ptr);
+
+		if (!i) {
+			/* Transmit single SKB or head of fragment list */
+			GENET_CB(skb)->first_cb = tx_cb_ptr;
+			size = skb_headlen(skb);
+			mapping = dma_map_single(kdev, skb->data, size,
+						 DMA_TO_DEVICE);
+		} else {
+			/* xmit fragment */
+			frag = &skb_shinfo(skb)->frags[i - 1];
+			size = skb_frag_size(frag);
+			mapping = skb_frag_dma_map(kdev, frag, 0, size,
+						   DMA_TO_DEVICE);
+		}
+
+		ret = dma_mapping_error(kdev, mapping);
+		if (ret) {
+			priv->mib.tx_dma_failed++;
+			netif_err(priv, tx_err, dev, "Tx DMA map failed\n");
+			ret = NETDEV_TX_OK;
+			goto out_unmap_frags;
+		}
+		dma_unmap_addr_set(tx_cb_ptr, dma_addr, mapping);
+		dma_unmap_len_set(tx_cb_ptr, dma_len, size);
+
+		tx_cb_ptr->skb = skb;
+
+		len_stat = (size << DMA_BUFLENGTH_SHIFT) |
+			   (priv->hw_params->qtag_mask << DMA_TX_QTAG_SHIFT);
+
+		/* Note: if we ever change from DMA_TX_APPEND_CRC below we
+		 * will need to restore software padding of "runt" packets
+		 */
+		len_stat |= DMA_TX_APPEND_CRC;
+
+		if (!i) {
+			len_stat |= DMA_SOP;
+			if (skb->ip_summed == CHECKSUM_PARTIAL)
+				len_stat |= DMA_TX_DO_CSUM;
+		}
+		if (i == nr_frags)
+			len_stat |= DMA_EOP;
+
+		dmadesc_set(priv, tx_cb_ptr->bd_addr, mapping, len_stat);
+	}
+
+	GENET_CB(skb)->last_cb = tx_cb_ptr;
+
+	bcmgenet_hide_tsb(skb);
+	skb_tx_timestamp(skb);
+
+	/* Decrement total BD count and advance our write pointer */
+	ring->free_bds -= nr_frags + 1;
+	ring->prod_index += nr_frags + 1;
+	ring->prod_index &= DMA_P_INDEX_MASK;
+
+	netdev_tx_sent_queue(txq, GENET_CB(skb)->bytes_sent);
+
+	if (ring->free_bds <= (MAX_SKB_FRAGS + 1))
+		netif_tx_stop_queue(txq);
+
+	if (!netdev_xmit_more() || netif_xmit_stopped(txq))
+		/* Packets are ready, update producer index */
+		bcmgenet_tdma_ring_writel(priv, ring->index,
+					  ring->prod_index, TDMA_PROD_INDEX);
+out:
+	spin_unlock(&ring->lock);
+
+	return ret;
+
+out_unmap_frags:
+	/* Back up for failed control block mapping */
+	bcmgenet_put_txcb(priv, ring);
+
+	/* Unmap successfully mapped control blocks */
+	while (i-- > 0) {
+		tx_cb_ptr = bcmgenet_put_txcb(priv, ring);
+		bcmgenet_free_tx_cb(kdev, tx_cb_ptr);
+	}
+
+	dev_kfree_skb(skb);
+	goto out;
+}
+
+static struct sk_buff *bcmgenet_rx_refill(struct bcmgenet_priv *priv,
+					  struct enet_cb *cb)
+{
+	struct device *kdev = &priv->pdev->dev;
+	struct sk_buff *skb;
+	struct sk_buff *rx_skb;
+	dma_addr_t mapping;
+
+	/* Allocate a new Rx skb */
+	skb = __netdev_alloc_skb(priv->dev, priv->rx_buf_len + SKB_ALIGNMENT,
+				 GFP_ATOMIC | __GFP_NOWARN);
+	if (!skb) {
+		priv->mib.alloc_rx_buff_failed++;
+		netif_err(priv, rx_err, priv->dev,
+			  "%s: Rx skb allocation failed\n", __func__);
+		return NULL;
+	}
+
+	/* DMA-map the new Rx skb */
+	mapping = dma_map_single(kdev, skb->data, priv->rx_buf_len,
+				 DMA_FROM_DEVICE);
+	if (dma_mapping_error(kdev, mapping)) {
+		priv->mib.rx_dma_failed++;
+		dev_kfree_skb_any(skb);
+		netif_err(priv, rx_err, priv->dev,
+			  "%s: Rx skb DMA mapping failed\n", __func__);
+		return NULL;
+	}
+
+	/* Grab the current Rx skb from the ring and DMA-unmap it */
+	rx_skb = bcmgenet_free_rx_cb(kdev, cb);
+
+	/* Put the new Rx skb on the ring */
+	cb->skb = skb;
+	dma_unmap_addr_set(cb, dma_addr, mapping);
+	dma_unmap_len_set(cb, dma_len, priv->rx_buf_len);
+	dmadesc_set_addr(priv, cb->bd_addr, mapping);
+
+	/* Return the current Rx skb to caller */
+	return rx_skb;
+}
+
+/* bcmgenet_desc_rx - descriptor based rx process.
+ * this could be called from bottom half, or from NAPI polling method.
+ */
+static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
+				     unsigned int budget)
+{
+	struct bcmgenet_priv *priv = ring->priv;
+	struct net_device *dev = priv->dev;
+	struct enet_cb *cb;
+	struct sk_buff *skb;
+	u32 dma_length_status;
+	unsigned long dma_flag;
+	int len;
+	unsigned int rxpktprocessed = 0, rxpkttoprocess;
+	unsigned int bytes_processed = 0;
+	unsigned int p_index, mask;
+	unsigned int discards;
+
+	/* Clear status before servicing to reduce spurious interrupts */
+	if (ring->index == DESC_INDEX) {
+		bcmgenet_intrl2_0_writel(priv, UMAC_IRQ_RXDMA_DONE,
+					 INTRL2_CPU_CLEAR);
+	} else {
+		mask = 1 << (UMAC_IRQ1_RX_INTR_SHIFT + ring->index);
+		bcmgenet_intrl2_1_writel(priv,
+					 mask,
+					 INTRL2_CPU_CLEAR);
+	}
+
+	p_index = bcmgenet_rdma_ring_readl(priv, ring->index, RDMA_PROD_INDEX);
+
+	discards = (p_index >> DMA_P_INDEX_DISCARD_CNT_SHIFT) &
+		   DMA_P_INDEX_DISCARD_CNT_MASK;
+	if (discards > ring->old_discards) {
+		discards = discards - ring->old_discards;
+		ring->errors += discards;
+		ring->old_discards += discards;
+
+		/* Clear HW register when we reach 75% of maximum 0xFFFF */
+		if (ring->old_discards >= 0xC000) {
+			ring->old_discards = 0;
+			bcmgenet_rdma_ring_writel(priv, ring->index, 0,
+						  RDMA_PROD_INDEX);
+		}
+	}
+
+	p_index &= DMA_P_INDEX_MASK;
+	rxpkttoprocess = (p_index - ring->c_index) & DMA_C_INDEX_MASK;
+
+	netif_dbg(priv, rx_status, dev,
+		  "RDMA: rxpkttoprocess=%d\n", rxpkttoprocess);
+
+	while ((rxpktprocessed < rxpkttoprocess) &&
+	       (rxpktprocessed < budget)) {
+		struct status_64 *status;
+		__be16 rx_csum;
+
+		cb = &priv->rx_cbs[ring->read_ptr];
+		skb = bcmgenet_rx_refill(priv, cb);
+
+		if (unlikely(!skb)) {
+			ring->dropped++;
+			goto next;
+		}
+
+		status = (struct status_64 *)skb->data;
+		dma_length_status = status->length_status;
+		if (dev->features & NETIF_F_RXCSUM) {
+			rx_csum = (__force __be16)(status->rx_csum & 0xffff);
+			if (rx_csum) {
+				skb->csum = (__force __wsum)ntohs(rx_csum);
+				skb->ip_summed = CHECKSUM_COMPLETE;
+			}
+		}
+
+		/* DMA flags and length are still valid no matter how
+		 * we got the Receive Status Vector (64B RSB or register)
+		 */
+		dma_flag = dma_length_status & 0xffff;
+		len = dma_length_status >> DMA_BUFLENGTH_SHIFT;
+
+		netif_dbg(priv, rx_status, dev,
+			  "%s:p_ind=%d c_ind=%d read_ptr=%d len_stat=0x%08x\n",
+			  __func__, p_index, ring->c_index,
+			  ring->read_ptr, dma_length_status);
+
+		if (unlikely(len > RX_BUF_LENGTH)) {
+			netif_err(priv, rx_status, dev, "oversized packet\n");
+			dev->stats.rx_length_errors++;
+			dev->stats.rx_errors++;
+			dev_kfree_skb_any(skb);
+			goto next;
+		}
+
+		if (unlikely(!(dma_flag & DMA_EOP) || !(dma_flag & DMA_SOP))) {
+			netif_err(priv, rx_status, dev,
+				  "dropping fragmented packet!\n");
+			ring->errors++;
+			dev_kfree_skb_any(skb);
+			goto next;
+		}
+
+		/* report errors */
+		if (unlikely(dma_flag & (DMA_RX_CRC_ERROR |
+						DMA_RX_OV |
+						DMA_RX_NO |
+						DMA_RX_LG |
+						DMA_RX_RXER))) {
+			netif_err(priv, rx_status, dev, "dma_flag=0x%x\n",
+				  (unsigned int)dma_flag);
+			if (dma_flag & DMA_RX_CRC_ERROR)
+				dev->stats.rx_crc_errors++;
+			if (dma_flag & DMA_RX_OV)
+				dev->stats.rx_over_errors++;
+			if (dma_flag & DMA_RX_NO)
+				dev->stats.rx_frame_errors++;
+			if (dma_flag & DMA_RX_LG)
+				dev->stats.rx_length_errors++;
+			dev->stats.rx_errors++;
+			dev_kfree_skb_any(skb);
+			goto next;
+		} /* error packet */
+
+		skb_put(skb, len);
+
+		/* remove RSB and hardware 2bytes added for IP alignment */
+		skb_pull(skb, 66);
+		len -= 66;
+
+		if (priv->crc_fwd_en) {
+			skb_trim(skb, len - ETH_FCS_LEN);
+			len -= ETH_FCS_LEN;
+		}
+
+		bytes_processed += len;
+
+		/*Finish setting up the received SKB and send it to the kernel*/
+		skb->protocol = eth_type_trans(skb, priv->dev);
+		ring->packets++;
+		ring->bytes += len;
+		if (dma_flag & DMA_RX_MULT)
+			dev->stats.multicast++;
+
+		/* Notify kernel */
+		napi_gro_receive(&ring->napi, skb);
+		netif_dbg(priv, rx_status, dev, "pushed up to kernel\n");
+
+next:
+		rxpktprocessed++;
+		if (likely(ring->read_ptr < ring->end_ptr))
+			ring->read_ptr++;
+		else
+			ring->read_ptr = ring->cb_ptr;
+
+		ring->c_index = (ring->c_index + 1) & DMA_C_INDEX_MASK;
+		bcmgenet_rdma_ring_writel(priv, ring->index, ring->c_index, RDMA_CONS_INDEX);
+	}
+
+	ring->dim.bytes = bytes_processed;
+	ring->dim.packets = rxpktprocessed;
+
+	return rxpktprocessed;
+}
+
+/* Rx NAPI polling method */
+static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
+{
+	struct bcmgenet_rx_ring *ring = container_of(napi,
+			struct bcmgenet_rx_ring, napi);
+	struct dim_sample dim_sample = {};
+	unsigned int work_done;
+
+	work_done = bcmgenet_desc_rx(ring, budget);
+
+	if (work_done < budget) {
+		napi_complete_done(napi, work_done);
+		ring->int_enable(ring);
+	}
+
+	if (ring->dim.use_dim) {
+		dim_update_sample(ring->dim.event_ctr, ring->dim.packets,
+				  ring->dim.bytes, &dim_sample);
+		net_dim(&ring->dim.dim, dim_sample);
+	}
+
+	return work_done;
+}
+
+static void bcmgenet_dim_work(struct work_struct *work)
+{
+	struct dim *dim = container_of(work, struct dim, work);
+	struct bcmgenet_net_dim *ndim =
+			container_of(dim, struct bcmgenet_net_dim, dim);
+	struct bcmgenet_rx_ring *ring =
+			container_of(ndim, struct bcmgenet_rx_ring, dim);
+	struct dim_cq_moder cur_profile =
+			net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
+
+	bcmgenet_set_rx_coalesce(ring, cur_profile.usec, cur_profile.pkts);
+	dim->state = DIM_START_MEASURE;
+}
+
+/* Assign skb to RX DMA descriptor. */
+static int bcmgenet_alloc_rx_buffers(struct bcmgenet_priv *priv,
+				     struct bcmgenet_rx_ring *ring)
+{
+	struct enet_cb *cb;
+	struct sk_buff *skb;
+	int i;
+
+	netif_dbg(priv, hw, priv->dev, "%s\n", __func__);
+
+	/* loop here for each buffer needing assign */
+	for (i = 0; i < ring->size; i++) {
+		cb = ring->cbs + i;
+		skb = bcmgenet_rx_refill(priv, cb);
+		if (skb)
+			dev_consume_skb_any(skb);
+		if (!cb->skb)
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void bcmgenet_free_rx_buffers(struct bcmgenet_priv *priv)
+{
+	struct sk_buff *skb;
+	struct enet_cb *cb;
+	int i;
+
+	for (i = 0; i < priv->num_rx_bds; i++) {
+		cb = &priv->rx_cbs[i];
+
+		skb = bcmgenet_free_rx_cb(&priv->pdev->dev, cb);
+		if (skb)
+			dev_consume_skb_any(skb);
+	}
+}
+
+static void umac_enable_set(struct bcmgenet_priv *priv, u32 mask, bool enable)
+{
+	u32 reg;
+
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	if (reg & CMD_SW_RESET)
+		return;
+	if (enable)
+		reg |= mask;
+	else
+		reg &= ~mask;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+
+	/* UniMAC stops on a packet boundary, wait for a full-size packet
+	 * to be processed
+	 */
+	if (enable == 0)
+		usleep_range(1000, 2000);
+}
+
+static void reset_umac(struct bcmgenet_priv *priv)
+{
+	/* 7358a0/7552a0: bad default in RBUF_FLUSH_CTRL.umac_sw_rst */
+	bcmgenet_rbuf_ctrl_set(priv, 0);
+	udelay(10);
+
+	/* issue soft reset and disable MAC while updating its registers */
+	bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD);
+	udelay(2);
+}
+
+static void bcmgenet_intr_disable(struct bcmgenet_priv *priv)
+{
+	/* Mask all interrupts.*/
+	bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_MASK_SET);
+	bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_CLEAR);
+	bcmgenet_intrl2_1_writel(priv, 0xFFFFFFFF, INTRL2_CPU_MASK_SET);
+	bcmgenet_intrl2_1_writel(priv, 0xFFFFFFFF, INTRL2_CPU_CLEAR);
+}
+
+static void bcmgenet_link_intr_enable(struct bcmgenet_priv *priv)
+{
+	u32 int0_enable = 0;
+
+	/* Monitor cable plug/unplugged event for internal PHY, external PHY
+	 * and MoCA PHY
+	 */
+	if (priv->internal_phy) {
+		int0_enable |= UMAC_IRQ_LINK_EVENT;
+		if (GENET_IS_V1(priv) || GENET_IS_V2(priv) || GENET_IS_V3(priv))
+			int0_enable |= UMAC_IRQ_PHY_DET_R;
+	} else if (priv->ext_phy) {
+		int0_enable |= UMAC_IRQ_LINK_EVENT;
+	} else if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) {
+		if (priv->hw_params->flags & GENET_HAS_MOCA_LINK_DET)
+			int0_enable |= UMAC_IRQ_LINK_EVENT;
+	}
+	bcmgenet_intrl2_0_writel(priv, int0_enable, INTRL2_CPU_MASK_CLEAR);
+}
+
+static void init_umac(struct bcmgenet_priv *priv)
+{
+	struct device *kdev = &priv->pdev->dev;
+	u32 reg;
+	u32 int0_enable = 0;
+
+	dev_dbg(&priv->pdev->dev, "bcmgenet: init_umac\n");
+
+	reset_umac(priv);
+
+	/* clear tx/rx counter */
+	bcmgenet_umac_writel(priv,
+			     MIB_RESET_RX | MIB_RESET_TX | MIB_RESET_RUNT,
+			     UMAC_MIB_CTRL);
+	bcmgenet_umac_writel(priv, 0, UMAC_MIB_CTRL);
+
+	bcmgenet_umac_writel(priv, ENET_MAX_MTU_SIZE, UMAC_MAX_FRAME_LEN);
+
+	/* init tx registers, enable TSB */
+	reg = bcmgenet_tbuf_ctrl_get(priv);
+	reg |= TBUF_64B_EN;
+	bcmgenet_tbuf_ctrl_set(priv, reg);
+
+	/* init rx registers, enable ip header optimization and RSB */
+	reg = bcmgenet_rbuf_readl(priv, RBUF_CTRL);
+	reg |= RBUF_ALIGN_2B | RBUF_64B_EN;
+	bcmgenet_rbuf_writel(priv, reg, RBUF_CTRL);
+
+	/* enable rx checksumming */
+	reg = bcmgenet_rbuf_readl(priv, RBUF_CHK_CTRL);
+	reg |= RBUF_RXCHK_EN | RBUF_L3_PARSE_DIS;
+	/* If UniMAC forwards CRC, we need to skip over it to get
+	 * a valid CHK bit to be set in the per-packet status word
+	 */
+	if (priv->crc_fwd_en)
+		reg |= RBUF_SKIP_FCS;
+	else
+		reg &= ~RBUF_SKIP_FCS;
+	bcmgenet_rbuf_writel(priv, reg, RBUF_CHK_CTRL);
+
+	if (!GENET_IS_V1(priv) && !GENET_IS_V2(priv))
+		bcmgenet_rbuf_writel(priv, 1, RBUF_TBUF_SIZE_CTRL);
+
+	bcmgenet_intr_disable(priv);
+
+	/* Configure backpressure vectors for MoCA */
+	if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) {
+		reg = bcmgenet_bp_mc_get(priv);
+		reg |= BIT(priv->hw_params->bp_in_en_shift);
+
+		/* bp_mask: back pressure mask */
+		if (netif_is_multiqueue(priv->dev))
+			reg |= priv->hw_params->bp_in_mask;
+		else
+			reg &= ~priv->hw_params->bp_in_mask;
+		bcmgenet_bp_mc_set(priv, reg);
+	}
+
+	/* Enable MDIO interrupts on GENET v3+ */
+	if (priv->hw_params->flags & GENET_HAS_MDIO_INTR)
+		int0_enable |= (UMAC_IRQ_MDIO_DONE | UMAC_IRQ_MDIO_ERROR);
+
+	bcmgenet_intrl2_0_writel(priv, int0_enable, INTRL2_CPU_MASK_CLEAR);
+
+	dev_dbg(kdev, "done init umac\n");
+}
+
+static void bcmgenet_init_dim(struct bcmgenet_rx_ring *ring,
+			      void (*cb)(struct work_struct *work))
+{
+	struct bcmgenet_net_dim *dim = &ring->dim;
+
+	INIT_WORK(&dim->dim.work, cb);
+	dim->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+	dim->event_ctr = 0;
+	dim->packets = 0;
+	dim->bytes = 0;
+}
+
+static void bcmgenet_init_rx_coalesce(struct bcmgenet_rx_ring *ring)
+{
+	struct bcmgenet_net_dim *dim = &ring->dim;
+	struct dim_cq_moder moder;
+	u32 usecs, pkts;
+
+	usecs = ring->rx_coalesce_usecs;
+	pkts = ring->rx_max_coalesced_frames;
+
+	/* If DIM was enabled, re-apply default parameters */
+	if (dim->use_dim) {
+		moder = net_dim_get_def_rx_moderation(dim->dim.mode);
+		usecs = moder.usec;
+		pkts = moder.pkts;
+	}
+
+	bcmgenet_set_rx_coalesce(ring, usecs, pkts);
+}
+
+/* Initialize a Tx ring along with corresponding hardware registers */
+static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
+				  unsigned int index, unsigned int size,
+				  unsigned int start_ptr, unsigned int end_ptr)
+{
+	struct bcmgenet_tx_ring *ring = &priv->tx_rings[index];
+	u32 words_per_bd = WORDS_PER_BD(priv);
+	u32 flow_period_val = 0;
+
+	spin_lock_init(&ring->lock);
+	ring->priv = priv;
+	ring->index = index;
+	if (index == DESC_INDEX) {
+		ring->queue = 0;
+		ring->int_enable = bcmgenet_tx_ring16_int_enable;
+		ring->int_disable = bcmgenet_tx_ring16_int_disable;
+	} else {
+		ring->queue = index + 1;
+		ring->int_enable = bcmgenet_tx_ring_int_enable;
+		ring->int_disable = bcmgenet_tx_ring_int_disable;
+	}
+	ring->cbs = priv->tx_cbs + start_ptr;
+	ring->size = size;
+	ring->clean_ptr = start_ptr;
+	ring->c_index = 0;
+	ring->free_bds = size;
+	ring->write_ptr = start_ptr;
+	ring->cb_ptr = start_ptr;
+	ring->end_ptr = end_ptr - 1;
+	ring->prod_index = 0;
+
+	/* Set flow period for ring != 16 */
+	if (index != DESC_INDEX)
+		flow_period_val = ENET_MAX_MTU_SIZE << 16;
+
+	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX);
+	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX);
+	bcmgenet_tdma_ring_writel(priv, index, 1, DMA_MBUF_DONE_THRESH);
+	/* Disable rate control for now */
+	bcmgenet_tdma_ring_writel(priv, index, flow_period_val,
+				  TDMA_FLOW_PERIOD);
+	bcmgenet_tdma_ring_writel(priv, index,
+				  ((size << DMA_RING_SIZE_SHIFT) |
+				   RX_BUF_LENGTH), DMA_RING_BUF_SIZE);
+
+	/* Set start and end address, read and write pointers */
+	bcmgenet_tdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  DMA_START_ADDR);
+	bcmgenet_tdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  TDMA_READ_PTR);
+	bcmgenet_tdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  TDMA_WRITE_PTR);
+	bcmgenet_tdma_ring_writel(priv, index, end_ptr * words_per_bd - 1,
+				  DMA_END_ADDR);
+
+	/* Initialize Tx NAPI */
+	netif_napi_add_tx(priv->dev, &ring->napi, bcmgenet_tx_poll);
+}
+
+/* Initialize a RDMA ring */
+static int bcmgenet_init_rx_ring(struct bcmgenet_priv *priv,
+				 unsigned int index, unsigned int size,
+				 unsigned int start_ptr, unsigned int end_ptr)
+{
+	struct bcmgenet_rx_ring *ring = &priv->rx_rings[index];
+	u32 words_per_bd = WORDS_PER_BD(priv);
+	int ret;
+
+	ring->priv = priv;
+	ring->index = index;
+	if (index == DESC_INDEX) {
+		ring->int_enable = bcmgenet_rx_ring16_int_enable;
+		ring->int_disable = bcmgenet_rx_ring16_int_disable;
+	} else {
+		ring->int_enable = bcmgenet_rx_ring_int_enable;
+		ring->int_disable = bcmgenet_rx_ring_int_disable;
+	}
+	ring->cbs = priv->rx_cbs + start_ptr;
+	ring->size = size;
+	ring->c_index = 0;
+	ring->read_ptr = start_ptr;
+	ring->cb_ptr = start_ptr;
+	ring->end_ptr = end_ptr - 1;
+
+	ret = bcmgenet_alloc_rx_buffers(priv, ring);
+	if (ret)
+		return ret;
+
+	bcmgenet_init_dim(ring, bcmgenet_dim_work);
+	bcmgenet_init_rx_coalesce(ring);
+
+	/* Initialize Rx NAPI */
+	netif_napi_add(priv->dev, &ring->napi, bcmgenet_rx_poll);
+
+	bcmgenet_rdma_ring_writel(priv, index, 0, RDMA_PROD_INDEX);
+	bcmgenet_rdma_ring_writel(priv, index, 0, RDMA_CONS_INDEX);
+	bcmgenet_rdma_ring_writel(priv, index,
+				  ((size << DMA_RING_SIZE_SHIFT) |
+				   RX_BUF_LENGTH), DMA_RING_BUF_SIZE);
+	bcmgenet_rdma_ring_writel(priv, index,
+				  (DMA_FC_THRESH_LO <<
+				   DMA_XOFF_THRESHOLD_SHIFT) |
+				   DMA_FC_THRESH_HI, RDMA_XON_XOFF_THRESH);
+
+	/* Set start and end address, read and write pointers */
+	bcmgenet_rdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  DMA_START_ADDR);
+	bcmgenet_rdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  RDMA_READ_PTR);
+	bcmgenet_rdma_ring_writel(priv, index, start_ptr * words_per_bd,
+				  RDMA_WRITE_PTR);
+	bcmgenet_rdma_ring_writel(priv, index, end_ptr * words_per_bd - 1,
+				  DMA_END_ADDR);
+
+	return ret;
+}
+
+static void bcmgenet_enable_tx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_tx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->tx_queues; ++i) {
+		ring = &priv->tx_rings[i];
+		napi_enable(&ring->napi);
+		ring->int_enable(ring);
+	}
+
+	ring = &priv->tx_rings[DESC_INDEX];
+	napi_enable(&ring->napi);
+	ring->int_enable(ring);
+}
+
+static void bcmgenet_disable_tx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_tx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->tx_queues; ++i) {
+		ring = &priv->tx_rings[i];
+		napi_disable(&ring->napi);
+	}
+
+	ring = &priv->tx_rings[DESC_INDEX];
+	napi_disable(&ring->napi);
+}
+
+static void bcmgenet_fini_tx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_tx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->tx_queues; ++i) {
+		ring = &priv->tx_rings[i];
+		netif_napi_del(&ring->napi);
+	}
+
+	ring = &priv->tx_rings[DESC_INDEX];
+	netif_napi_del(&ring->napi);
+}
+
+/* Initialize Tx queues
+ *
+ * Queues 0-3 are priority-based, each one has 32 descriptors,
+ * with queue 0 being the highest priority queue.
+ *
+ * Queue 16 is the default Tx queue with
+ * GENET_Q16_TX_BD_CNT = 256 - 4 * 32 = 128 descriptors.
+ *
+ * The transmit control block pool is then partitioned as follows:
+ * - Tx queue 0 uses tx_cbs[0..31]
+ * - Tx queue 1 uses tx_cbs[32..63]
+ * - Tx queue 2 uses tx_cbs[64..95]
+ * - Tx queue 3 uses tx_cbs[96..127]
+ * - Tx queue 16 uses tx_cbs[128..255]
+ */
+static void bcmgenet_init_tx_queues(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 i, dma_enable;
+	u32 dma_ctrl, ring_cfg;
+	u32 dma_priority[3] = {0, 0, 0};
+
+	dma_ctrl = bcmgenet_tdma_readl(priv, DMA_CTRL);
+	dma_enable = dma_ctrl & DMA_EN;
+	dma_ctrl &= ~DMA_EN;
+	bcmgenet_tdma_writel(priv, dma_ctrl, DMA_CTRL);
+
+	dma_ctrl = 0;
+	ring_cfg = 0;
+
+	/* Enable strict priority arbiter mode */
+	bcmgenet_tdma_writel(priv, DMA_ARBITER_SP, DMA_ARB_CTRL);
+
+	/* Initialize Tx priority queues */
+	for (i = 0; i < priv->hw_params->tx_queues; i++) {
+		bcmgenet_init_tx_ring(priv, i, priv->hw_params->tx_bds_per_q,
+				      i * priv->hw_params->tx_bds_per_q,
+				      (i + 1) * priv->hw_params->tx_bds_per_q);
+		ring_cfg |= (1 << i);
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+		dma_priority[DMA_PRIO_REG_INDEX(i)] |=
+			((GENET_Q0_PRIORITY + i) << DMA_PRIO_REG_SHIFT(i));
+	}
+
+	/* Initialize Tx default queue 16 */
+	bcmgenet_init_tx_ring(priv, DESC_INDEX, GENET_Q16_TX_BD_CNT,
+			      priv->hw_params->tx_queues *
+			      priv->hw_params->tx_bds_per_q,
+			      TOTAL_DESC);
+	ring_cfg |= (1 << DESC_INDEX);
+	dma_ctrl |= (1 << (DESC_INDEX + DMA_RING_BUF_EN_SHIFT));
+	dma_priority[DMA_PRIO_REG_INDEX(DESC_INDEX)] |=
+		((GENET_Q0_PRIORITY + priv->hw_params->tx_queues) <<
+		 DMA_PRIO_REG_SHIFT(DESC_INDEX));
+
+	/* Set Tx queue priorities */
+	bcmgenet_tdma_writel(priv, dma_priority[0], DMA_PRIORITY_0);
+	bcmgenet_tdma_writel(priv, dma_priority[1], DMA_PRIORITY_1);
+	bcmgenet_tdma_writel(priv, dma_priority[2], DMA_PRIORITY_2);
+
+	/* Enable Tx queues */
+	bcmgenet_tdma_writel(priv, ring_cfg, DMA_RING_CFG);
+
+	/* Enable Tx DMA */
+	if (dma_enable)
+		dma_ctrl |= DMA_EN;
+	bcmgenet_tdma_writel(priv, dma_ctrl, DMA_CTRL);
+}
+
+static void bcmgenet_enable_rx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_rx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->rx_queues; ++i) {
+		ring = &priv->rx_rings[i];
+		napi_enable(&ring->napi);
+		ring->int_enable(ring);
+	}
+
+	ring = &priv->rx_rings[DESC_INDEX];
+	napi_enable(&ring->napi);
+	ring->int_enable(ring);
+}
+
+static void bcmgenet_disable_rx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_rx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->rx_queues; ++i) {
+		ring = &priv->rx_rings[i];
+		napi_disable(&ring->napi);
+		cancel_work_sync(&ring->dim.dim.work);
+	}
+
+	ring = &priv->rx_rings[DESC_INDEX];
+	napi_disable(&ring->napi);
+	cancel_work_sync(&ring->dim.dim.work);
+}
+
+static void bcmgenet_fini_rx_napi(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	struct bcmgenet_rx_ring *ring;
+
+	for (i = 0; i < priv->hw_params->rx_queues; ++i) {
+		ring = &priv->rx_rings[i];
+		netif_napi_del(&ring->napi);
+	}
+
+	ring = &priv->rx_rings[DESC_INDEX];
+	netif_napi_del(&ring->napi);
+}
+
+/* Initialize Rx queues
+ *
+ * Queues 0-15 are priority queues. Hardware Filtering Block (HFB) can be
+ * used to direct traffic to these queues.
+ *
+ * Queue 16 is the default Rx queue with GENET_Q16_RX_BD_CNT descriptors.
+ */
+static int bcmgenet_init_rx_queues(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 i;
+	u32 dma_enable;
+	u32 dma_ctrl;
+	u32 ring_cfg;
+	int ret;
+
+	dma_ctrl = bcmgenet_rdma_readl(priv, DMA_CTRL);
+	dma_enable = dma_ctrl & DMA_EN;
+	dma_ctrl &= ~DMA_EN;
+	bcmgenet_rdma_writel(priv, dma_ctrl, DMA_CTRL);
+
+	dma_ctrl = 0;
+	ring_cfg = 0;
+
+	/* Initialize Rx priority queues */
+	for (i = 0; i < priv->hw_params->rx_queues; i++) {
+		ret = bcmgenet_init_rx_ring(priv, i,
+					    priv->hw_params->rx_bds_per_q,
+					    i * priv->hw_params->rx_bds_per_q,
+					    (i + 1) *
+					    priv->hw_params->rx_bds_per_q);
+		if (ret)
+			return ret;
+
+		ring_cfg |= (1 << i);
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+	}
+
+	/* Initialize Rx default queue 16 */
+	ret = bcmgenet_init_rx_ring(priv, DESC_INDEX, GENET_Q16_RX_BD_CNT,
+				    priv->hw_params->rx_queues *
+				    priv->hw_params->rx_bds_per_q,
+				    TOTAL_DESC);
+	if (ret)
+		return ret;
+
+	ring_cfg |= (1 << DESC_INDEX);
+	dma_ctrl |= (1 << (DESC_INDEX + DMA_RING_BUF_EN_SHIFT));
+
+	/* Enable rings */
+	bcmgenet_rdma_writel(priv, ring_cfg, DMA_RING_CFG);
+
+	/* Configure ring as descriptor ring and re-enable DMA if enabled */
+	if (dma_enable)
+		dma_ctrl |= DMA_EN;
+	bcmgenet_rdma_writel(priv, dma_ctrl, DMA_CTRL);
+
+	return 0;
+}
+
+static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
+{
+	int ret = 0;
+	int timeout = 0;
+	u32 reg;
+	u32 dma_ctrl;
+	int i;
+
+	/* Disable TDMA to stop add more frames in TX DMA */
+	reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
+	reg &= ~DMA_EN;
+	bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
+
+	/* Check TDMA status register to confirm TDMA is disabled */
+	while (timeout++ < DMA_TIMEOUT_VAL) {
+		reg = bcmgenet_tdma_readl(priv, DMA_STATUS);
+		if (reg & DMA_DISABLED)
+			break;
+
+		udelay(1);
+	}
+
+	if (timeout == DMA_TIMEOUT_VAL) {
+		netdev_warn(priv->dev, "Timed out while disabling TX DMA\n");
+		ret = -ETIMEDOUT;
+	}
+
+	/* Wait 10ms for packet drain in both tx and rx dma */
+	usleep_range(10000, 20000);
+
+	/* Disable RDMA */
+	reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
+	reg &= ~DMA_EN;
+	bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
+
+	timeout = 0;
+	/* Check RDMA status register to confirm RDMA is disabled */
+	while (timeout++ < DMA_TIMEOUT_VAL) {
+		reg = bcmgenet_rdma_readl(priv, DMA_STATUS);
+		if (reg & DMA_DISABLED)
+			break;
+
+		udelay(1);
+	}
+
+	if (timeout == DMA_TIMEOUT_VAL) {
+		netdev_warn(priv->dev, "Timed out while disabling RX DMA\n");
+		ret = -ETIMEDOUT;
+	}
+
+	dma_ctrl = 0;
+	for (i = 0; i < priv->hw_params->rx_queues; i++)
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+	reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
+	reg &= ~dma_ctrl;
+	bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
+
+	dma_ctrl = 0;
+	for (i = 0; i < priv->hw_params->tx_queues; i++)
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+	reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
+	reg &= ~dma_ctrl;
+	bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
+
+	return ret;
+}
+
+static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
+{
+	struct netdev_queue *txq;
+	int i;
+
+	bcmgenet_fini_rx_napi(priv);
+	bcmgenet_fini_tx_napi(priv);
+
+	for (i = 0; i < priv->num_tx_bds; i++)
+		dev_kfree_skb(bcmgenet_free_tx_cb(&priv->pdev->dev,
+						  priv->tx_cbs + i));
+
+	for (i = 0; i < priv->hw_params->tx_queues; i++) {
+		txq = netdev_get_tx_queue(priv->dev, priv->tx_rings[i].queue);
+		netdev_tx_reset_queue(txq);
+	}
+
+	txq = netdev_get_tx_queue(priv->dev, priv->tx_rings[DESC_INDEX].queue);
+	netdev_tx_reset_queue(txq);
+
+	bcmgenet_free_rx_buffers(priv);
+	kfree(priv->rx_cbs);
+	kfree(priv->tx_cbs);
+}
+
+/* init_edma: Initialize DMA control register */
+static int bcmgenet_init_dma(struct bcmgenet_priv *priv)
+{
+	int ret;
+	unsigned int i;
+	struct enet_cb *cb;
+
+	netif_dbg(priv, hw, priv->dev, "%s\n", __func__);
+
+	/* Initialize common Rx ring structures */
+	priv->rx_bds = priv->base + priv->hw_params->rdma_offset;
+	priv->num_rx_bds = TOTAL_DESC;
+	priv->rx_cbs = kcalloc(priv->num_rx_bds, sizeof(struct enet_cb),
+			       GFP_KERNEL);
+	if (!priv->rx_cbs)
+		return -ENOMEM;
+
+	for (i = 0; i < priv->num_rx_bds; i++) {
+		cb = priv->rx_cbs + i;
+		cb->bd_addr = priv->rx_bds + i * DMA_DESC_SIZE;
+	}
+
+	/* Initialize common TX ring structures */
+	priv->tx_bds = priv->base + priv->hw_params->tdma_offset;
+	priv->num_tx_bds = TOTAL_DESC;
+	priv->tx_cbs = kcalloc(priv->num_tx_bds, sizeof(struct enet_cb),
+			       GFP_KERNEL);
+	if (!priv->tx_cbs) {
+		kfree(priv->rx_cbs);
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < priv->num_tx_bds; i++) {
+		cb = priv->tx_cbs + i;
+		cb->bd_addr = priv->tx_bds + i * DMA_DESC_SIZE;
+	}
+
+	/* Init rDma */
+	bcmgenet_rdma_writel(priv, priv->dma_max_burst_length,
+			     DMA_SCB_BURST_SIZE);
+
+	/* Initialize Rx queues */
+	ret = bcmgenet_init_rx_queues(priv->dev);
+	if (ret) {
+		netdev_err(priv->dev, "failed to initialize Rx queues\n");
+		bcmgenet_free_rx_buffers(priv);
+		kfree(priv->rx_cbs);
+		kfree(priv->tx_cbs);
+		return ret;
+	}
+
+	/* Init tDma */
+	bcmgenet_tdma_writel(priv, priv->dma_max_burst_length,
+			     DMA_SCB_BURST_SIZE);
+
+	/* Initialize Tx queues */
+	bcmgenet_init_tx_queues(priv->dev);
+
+	return 0;
+}
+
+/* Interrupt bottom half */
+static void bcmgenet_irq_task(struct work_struct *work)
+{
+	unsigned int status;
+	struct bcmgenet_priv *priv = container_of(
+			work, struct bcmgenet_priv, bcmgenet_irq_work);
+
+	netif_dbg(priv, intr, priv->dev, "%s\n", __func__);
+
+	spin_lock_irq(&priv->lock);
+	status = priv->irq0_stat;
+	priv->irq0_stat = 0;
+	spin_unlock_irq(&priv->lock);
+
+	if (status & UMAC_IRQ_PHY_DET_R &&
+	    priv->dev->phydev->autoneg != AUTONEG_ENABLE) {
+		phy_init_hw(priv->dev->phydev);
+		genphy_config_aneg(priv->dev->phydev);
+	}
+
+	/* Link UP/DOWN event */
+	if (status & UMAC_IRQ_LINK_EVENT)
+		phy_mac_interrupt(priv->dev->phydev);
+
+}
+
+/* bcmgenet_isr1: handle Rx and Tx priority queues */
+static irqreturn_t bcmgenet_isr1(int irq, void *dev_id)
+{
+	struct bcmgenet_priv *priv = dev_id;
+	struct bcmgenet_rx_ring *rx_ring;
+	struct bcmgenet_tx_ring *tx_ring;
+	unsigned int index, status;
+
+	/* Read irq status */
+	status = bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_STAT) &
+		~bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_MASK_STATUS);
+
+	/* clear interrupts */
+	bcmgenet_intrl2_1_writel(priv, status, INTRL2_CPU_CLEAR);
+
+	netif_dbg(priv, intr, priv->dev,
+		  "%s: IRQ=0x%x\n", __func__, status);
+
+	/* Check Rx priority queue interrupts */
+	for (index = 0; index < priv->hw_params->rx_queues; index++) {
+		if (!(status & BIT(UMAC_IRQ1_RX_INTR_SHIFT + index)))
+			continue;
+
+		rx_ring = &priv->rx_rings[index];
+		rx_ring->dim.event_ctr++;
+
+		if (likely(napi_schedule_prep(&rx_ring->napi))) {
+			rx_ring->int_disable(rx_ring);
+			__napi_schedule_irqoff(&rx_ring->napi);
+		}
+	}
+
+	/* Check Tx priority queue interrupts */
+	for (index = 0; index < priv->hw_params->tx_queues; index++) {
+		if (!(status & BIT(index)))
+			continue;
+
+		tx_ring = &priv->tx_rings[index];
+
+		if (likely(napi_schedule_prep(&tx_ring->napi))) {
+			tx_ring->int_disable(tx_ring);
+			__napi_schedule_irqoff(&tx_ring->napi);
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+/* bcmgenet_isr0: handle Rx and Tx default queues + other stuff */
+static irqreturn_t bcmgenet_isr0(int irq, void *dev_id)
+{
+	struct bcmgenet_priv *priv = dev_id;
+	struct bcmgenet_rx_ring *rx_ring;
+	struct bcmgenet_tx_ring *tx_ring;
+	unsigned int status;
+	unsigned long flags;
+
+	/* Read irq status */
+	status = bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_STAT) &
+		~bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS);
+
+	/* clear interrupts */
+	bcmgenet_intrl2_0_writel(priv, status, INTRL2_CPU_CLEAR);
+
+	netif_dbg(priv, intr, priv->dev,
+		  "IRQ=0x%x\n", status);
+
+	if (status & UMAC_IRQ_RXDMA_DONE) {
+		rx_ring = &priv->rx_rings[DESC_INDEX];
+		rx_ring->dim.event_ctr++;
+
+		if (likely(napi_schedule_prep(&rx_ring->napi))) {
+			rx_ring->int_disable(rx_ring);
+			__napi_schedule_irqoff(&rx_ring->napi);
+		}
+	}
+
+	if (status & UMAC_IRQ_TXDMA_DONE) {
+		tx_ring = &priv->tx_rings[DESC_INDEX];
+
+		if (likely(napi_schedule_prep(&tx_ring->napi))) {
+			tx_ring->int_disable(tx_ring);
+			__napi_schedule_irqoff(&tx_ring->napi);
+		}
+	}
+
+	if ((priv->hw_params->flags & GENET_HAS_MDIO_INTR) &&
+		status & (UMAC_IRQ_MDIO_DONE | UMAC_IRQ_MDIO_ERROR)) {
+		wake_up(&priv->wq);
+	}
+
+	/* all other interested interrupts handled in bottom half */
+	status &= (UMAC_IRQ_LINK_EVENT | UMAC_IRQ_PHY_DET_R);
+	if (status) {
+		/* Save irq status for bottom-half processing. */
+		spin_lock_irqsave(&priv->lock, flags);
+		priv->irq0_stat |= status;
+		spin_unlock_irqrestore(&priv->lock, flags);
+
+		schedule_work(&priv->bcmgenet_irq_work);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t bcmgenet_wol_isr(int irq, void *dev_id)
+{
+	/* Acknowledge the interrupt */
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void bcmgenet_poll_controller(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	/* Invoke the main RX/TX interrupt handler */
+	disable_irq(priv->irq0);
+	bcmgenet_isr0(priv->irq0, priv);
+	enable_irq(priv->irq0);
+
+	/* And the interrupt handler for RX/TX priority queues */
+	disable_irq(priv->irq1);
+	bcmgenet_isr1(priv->irq1, priv);
+	enable_irq(priv->irq1);
+}
+#endif
+
+static void bcmgenet_umac_reset(struct bcmgenet_priv *priv)
+{
+	u32 reg;
+
+	reg = bcmgenet_rbuf_ctrl_get(priv);
+	reg |= BIT(1);
+	bcmgenet_rbuf_ctrl_set(priv, reg);
+	udelay(10);
+
+	reg &= ~BIT(1);
+	bcmgenet_rbuf_ctrl_set(priv, reg);
+	udelay(10);
+}
+
+static void bcmgenet_set_hw_addr(struct bcmgenet_priv *priv,
+				 const unsigned char *addr)
+{
+	bcmgenet_umac_writel(priv, get_unaligned_be32(&addr[0]), UMAC_MAC0);
+	bcmgenet_umac_writel(priv, get_unaligned_be16(&addr[4]), UMAC_MAC1);
+}
+
+static void bcmgenet_get_hw_addr(struct bcmgenet_priv *priv,
+				 unsigned char *addr)
+{
+	u32 addr_tmp;
+
+	addr_tmp = bcmgenet_umac_readl(priv, UMAC_MAC0);
+	put_unaligned_be32(addr_tmp, &addr[0]);
+	addr_tmp = bcmgenet_umac_readl(priv, UMAC_MAC1);
+	put_unaligned_be16(addr_tmp, &addr[4]);
+}
+
+/* Returns a reusable dma control register value */
+static u32 bcmgenet_dma_disable(struct bcmgenet_priv *priv)
+{
+	unsigned int i;
+	u32 reg;
+	u32 dma_ctrl;
+
+	/* disable DMA */
+	dma_ctrl = 1 << (DESC_INDEX + DMA_RING_BUF_EN_SHIFT) | DMA_EN;
+	for (i = 0; i < priv->hw_params->tx_queues; i++)
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+	reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
+	reg &= ~dma_ctrl;
+	bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
+
+	dma_ctrl = 1 << (DESC_INDEX + DMA_RING_BUF_EN_SHIFT) | DMA_EN;
+	for (i = 0; i < priv->hw_params->rx_queues; i++)
+		dma_ctrl |= (1 << (i + DMA_RING_BUF_EN_SHIFT));
+	reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
+	reg &= ~dma_ctrl;
+	bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
+
+	bcmgenet_umac_writel(priv, 1, UMAC_TX_FLUSH);
+	udelay(10);
+	bcmgenet_umac_writel(priv, 0, UMAC_TX_FLUSH);
+
+	return dma_ctrl;
+}
+
+static void bcmgenet_enable_dma(struct bcmgenet_priv *priv, u32 dma_ctrl)
+{
+	u32 reg;
+
+	reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
+	reg |= dma_ctrl;
+	bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
+
+	reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
+	reg |= dma_ctrl;
+	bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
+}
+
+static void bcmgenet_netif_start(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	/* Start the network engine */
+	bcmgenet_set_rx_mode(dev);
+	bcmgenet_enable_rx_napi(priv);
+
+	umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, true);
+
+	bcmgenet_enable_tx_napi(priv);
+
+	/* Monitor link interrupts now */
+	bcmgenet_link_intr_enable(priv);
+
+	phy_start(dev->phydev);
+}
+
+static int bcmgenet_open(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	unsigned long dma_ctrl;
+	int ret;
+
+	netif_dbg(priv, ifup, dev, "bcmgenet_open\n");
+
+	/* Turn on the clock */
+	clk_prepare_enable(priv->clk);
+
+	/* If this is an internal GPHY, power it back on now, before UniMAC is
+	 * brought out of reset as absolutely no UniMAC activity is allowed
+	 */
+	if (priv->internal_phy)
+		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
+
+	/* take MAC out of reset */
+	bcmgenet_umac_reset(priv);
+
+	init_umac(priv);
+
+	/* Apply features again in case we changed them while interface was
+	 * down
+	 */
+	bcmgenet_set_features(dev, dev->features);
+
+	bcmgenet_set_hw_addr(priv, dev->dev_addr);
+
+	/* Disable RX/TX DMA and flush TX queues */
+	dma_ctrl = bcmgenet_dma_disable(priv);
+
+	/* Reinitialize TDMA and RDMA and SW housekeeping */
+	ret = bcmgenet_init_dma(priv);
+	if (ret) {
+		netdev_err(dev, "failed to initialize DMA\n");
+		goto err_clk_disable;
+	}
+
+	/* Always enable ring 16 - descriptor ring */
+	bcmgenet_enable_dma(priv, dma_ctrl);
+
+	/* HFB init */
+	bcmgenet_hfb_init(priv);
+
+	ret = request_irq(priv->irq0, bcmgenet_isr0, IRQF_SHARED,
+			  dev->name, priv);
+	if (ret < 0) {
+		netdev_err(dev, "can't request IRQ %d\n", priv->irq0);
+		goto err_fini_dma;
+	}
+
+	ret = request_irq(priv->irq1, bcmgenet_isr1, IRQF_SHARED,
+			  dev->name, priv);
+	if (ret < 0) {
+		netdev_err(dev, "can't request IRQ %d\n", priv->irq1);
+		goto err_irq0;
+	}
+
+	ret = bcmgenet_mii_probe(dev);
+	if (ret) {
+		netdev_err(dev, "failed to connect to PHY\n");
+		goto err_irq1;
+	}
+
+	bcmgenet_phy_pause_set(dev, priv->rx_pause, priv->tx_pause);
+
+	bcmgenet_netif_start(dev);
+
+	netif_tx_start_all_queues(dev);
+
+	return 0;
+
+err_irq1:
+	free_irq(priv->irq1, priv);
+err_irq0:
+	free_irq(priv->irq0, priv);
+err_fini_dma:
+	bcmgenet_dma_teardown(priv);
+	bcmgenet_fini_dma(priv);
+err_clk_disable:
+	if (priv->internal_phy)
+		bcmgenet_power_down(priv, GENET_POWER_PASSIVE);
+	clk_disable_unprepare(priv->clk);
+	return ret;
+}
+
+static void bcmgenet_netif_stop(struct net_device *dev, bool stop_phy)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	bcmgenet_disable_tx_napi(priv);
+	netif_tx_disable(dev);
+
+	/* Disable MAC receive */
+	umac_enable_set(priv, CMD_RX_EN, false);
+
+	bcmgenet_dma_teardown(priv);
+
+	/* Disable MAC transmit. TX DMA disabled must be done before this */
+	umac_enable_set(priv, CMD_TX_EN, false);
+
+	if (stop_phy)
+		phy_stop(dev->phydev);
+	bcmgenet_disable_rx_napi(priv);
+	bcmgenet_intr_disable(priv);
+
+	/* Wait for pending work items to complete. Since interrupts are
+	 * disabled no new work will be scheduled.
+	 */
+	cancel_work_sync(&priv->bcmgenet_irq_work);
+
+	/* tx reclaim */
+	bcmgenet_tx_reclaim_all(dev);
+	bcmgenet_fini_dma(priv);
+}
+
+static int bcmgenet_close(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int ret = 0;
+
+	netif_dbg(priv, ifdown, dev, "bcmgenet_close\n");
+
+	bcmgenet_netif_stop(dev, false);
+
+	/* Really kill the PHY state machine and disconnect from it */
+	phy_disconnect(dev->phydev);
+
+	free_irq(priv->irq0, priv);
+	free_irq(priv->irq1, priv);
+
+	if (priv->internal_phy)
+		ret = bcmgenet_power_down(priv, GENET_POWER_PASSIVE);
+
+	clk_disable_unprepare(priv->clk);
+
+	return ret;
+}
+
+static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring)
+{
+	struct bcmgenet_priv *priv = ring->priv;
+	u32 p_index, c_index, intsts, intmsk;
+	struct netdev_queue *txq;
+	unsigned int free_bds;
+	bool txq_stopped;
+
+	if (!netif_msg_tx_err(priv))
+		return;
+
+	txq = netdev_get_tx_queue(priv->dev, ring->queue);
+
+	spin_lock(&ring->lock);
+	if (ring->index == DESC_INDEX) {
+		intsts = ~bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS);
+		intmsk = UMAC_IRQ_TXDMA_DONE | UMAC_IRQ_TXDMA_MBDONE;
+	} else {
+		intsts = ~bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_MASK_STATUS);
+		intmsk = 1 << ring->index;
+	}
+	c_index = bcmgenet_tdma_ring_readl(priv, ring->index, TDMA_CONS_INDEX);
+	p_index = bcmgenet_tdma_ring_readl(priv, ring->index, TDMA_PROD_INDEX);
+	txq_stopped = netif_tx_queue_stopped(txq);
+	free_bds = ring->free_bds;
+	spin_unlock(&ring->lock);
+
+	netif_err(priv, tx_err, priv->dev, "Ring %d queue %d status summary\n"
+		  "TX queue status: %s, interrupts: %s\n"
+		  "(sw)free_bds: %d (sw)size: %d\n"
+		  "(sw)p_index: %d (hw)p_index: %d\n"
+		  "(sw)c_index: %d (hw)c_index: %d\n"
+		  "(sw)clean_p: %d (sw)write_p: %d\n"
+		  "(sw)cb_ptr: %d (sw)end_ptr: %d\n",
+		  ring->index, ring->queue,
+		  txq_stopped ? "stopped" : "active",
+		  intsts & intmsk ? "enabled" : "disabled",
+		  free_bds, ring->size,
+		  ring->prod_index, p_index & DMA_P_INDEX_MASK,
+		  ring->c_index, c_index & DMA_C_INDEX_MASK,
+		  ring->clean_ptr, ring->write_ptr,
+		  ring->cb_ptr, ring->end_ptr);
+}
+
+static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 int0_enable = 0;
+	u32 int1_enable = 0;
+	unsigned int q;
+
+	netif_dbg(priv, tx_err, dev, "bcmgenet_timeout\n");
+
+	for (q = 0; q < priv->hw_params->tx_queues; q++)
+		bcmgenet_dump_tx_queue(&priv->tx_rings[q]);
+	bcmgenet_dump_tx_queue(&priv->tx_rings[DESC_INDEX]);
+
+	bcmgenet_tx_reclaim_all(dev);
+
+	for (q = 0; q < priv->hw_params->tx_queues; q++)
+		int1_enable |= (1 << q);
+
+	int0_enable = UMAC_IRQ_TXDMA_DONE;
+
+	/* Re-enable TX interrupts if disabled */
+	bcmgenet_intrl2_0_writel(priv, int0_enable, INTRL2_CPU_MASK_CLEAR);
+	bcmgenet_intrl2_1_writel(priv, int1_enable, INTRL2_CPU_MASK_CLEAR);
+
+	netif_trans_update(dev);
+
+	dev->stats.tx_errors++;
+
+	netif_tx_wake_all_queues(dev);
+}
+
+#define MAX_MDF_FILTER	17
+
+static inline void bcmgenet_set_mdf_addr(struct bcmgenet_priv *priv,
+					 const unsigned char *addr,
+					 int *i)
+{
+	bcmgenet_umac_writel(priv, addr[0] << 8 | addr[1],
+			     UMAC_MDF_ADDR + (*i * 4));
+	bcmgenet_umac_writel(priv, addr[2] << 24 | addr[3] << 16 |
+			     addr[4] << 8 | addr[5],
+			     UMAC_MDF_ADDR + ((*i + 1) * 4));
+	*i += 2;
+}
+
+static void bcmgenet_set_rx_mode(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct netdev_hw_addr *ha;
+	int i, nfilter;
+	u32 reg;
+
+	netif_dbg(priv, hw, dev, "%s: %08X\n", __func__, dev->flags);
+
+	/* Number of filters needed */
+	nfilter = netdev_uc_count(dev) + netdev_mc_count(dev) + 2;
+
+	/*
+	 * Turn on promicuous mode for three scenarios
+	 * 1. IFF_PROMISC flag is set
+	 * 2. IFF_ALLMULTI flag is set
+	 * 3. The number of filters needed exceeds the number filters
+	 *    supported by the hardware.
+	*/
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) ||
+	    (nfilter > MAX_MDF_FILTER)) {
+		reg |= CMD_PROMISC;
+		bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+		bcmgenet_umac_writel(priv, 0, UMAC_MDF_CTRL);
+		return;
+	} else {
+		reg &= ~CMD_PROMISC;
+		bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+	}
+
+	/* update MDF filter */
+	i = 0;
+	/* Broadcast */
+	bcmgenet_set_mdf_addr(priv, dev->broadcast, &i);
+	/* my own address.*/
+	bcmgenet_set_mdf_addr(priv, dev->dev_addr, &i);
+
+	/* Unicast */
+	netdev_for_each_uc_addr(ha, dev)
+		bcmgenet_set_mdf_addr(priv, ha->addr, &i);
+
+	/* Multicast */
+	netdev_for_each_mc_addr(ha, dev)
+		bcmgenet_set_mdf_addr(priv, ha->addr, &i);
+
+	/* Enable filters */
+	reg = GENMASK(MAX_MDF_FILTER - 1, MAX_MDF_FILTER - nfilter);
+	bcmgenet_umac_writel(priv, reg, UMAC_MDF_CTRL);
+}
+
+/* Set the hardware MAC address. */
+static int bcmgenet_set_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+	/* Setting the MAC address at the hardware level is not possible
+	 * without disabling the UniMAC RX/TX enable bits.
+	 */
+	if (netif_running(dev))
+		return -EBUSY;
+
+	eth_hw_addr_set(dev, addr->sa_data);
+
+	return 0;
+}
+
+static struct net_device_stats *bcmgenet_get_stats(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	unsigned long tx_bytes = 0, tx_packets = 0;
+	unsigned long rx_bytes = 0, rx_packets = 0;
+	unsigned long rx_errors = 0, rx_dropped = 0;
+	struct bcmgenet_tx_ring *tx_ring;
+	struct bcmgenet_rx_ring *rx_ring;
+	unsigned int q;
+
+	for (q = 0; q < priv->hw_params->tx_queues; q++) {
+		tx_ring = &priv->tx_rings[q];
+		tx_bytes += tx_ring->bytes;
+		tx_packets += tx_ring->packets;
+	}
+	tx_ring = &priv->tx_rings[DESC_INDEX];
+	tx_bytes += tx_ring->bytes;
+	tx_packets += tx_ring->packets;
+
+	for (q = 0; q < priv->hw_params->rx_queues; q++) {
+		rx_ring = &priv->rx_rings[q];
+
+		rx_bytes += rx_ring->bytes;
+		rx_packets += rx_ring->packets;
+		rx_errors += rx_ring->errors;
+		rx_dropped += rx_ring->dropped;
+	}
+	rx_ring = &priv->rx_rings[DESC_INDEX];
+	rx_bytes += rx_ring->bytes;
+	rx_packets += rx_ring->packets;
+	rx_errors += rx_ring->errors;
+	rx_dropped += rx_ring->dropped;
+
+	dev->stats.tx_bytes = tx_bytes;
+	dev->stats.tx_packets = tx_packets;
+	dev->stats.rx_bytes = rx_bytes;
+	dev->stats.rx_packets = rx_packets;
+	dev->stats.rx_errors = rx_errors;
+	dev->stats.rx_missed_errors = rx_errors;
+	dev->stats.rx_dropped = rx_dropped;
+	return &dev->stats;
+}
+
+static int bcmgenet_change_carrier(struct net_device *dev, bool new_carrier)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	if (!dev->phydev || !phy_is_pseudo_fixed_link(dev->phydev) ||
+	    priv->phy_interface != PHY_INTERFACE_MODE_MOCA)
+		return -EOPNOTSUPP;
+
+	if (new_carrier)
+		netif_carrier_on(dev);
+	else
+		netif_carrier_off(dev);
+
+	return 0;
+}
+
+static const struct net_device_ops bcmgenet_netdev_ops = {
+	.ndo_open		= bcmgenet_open,
+	.ndo_stop		= bcmgenet_close,
+	.ndo_start_xmit		= bcmgenet_xmit,
+	.ndo_tx_timeout		= bcmgenet_timeout,
+	.ndo_set_rx_mode	= bcmgenet_set_rx_mode,
+	.ndo_set_mac_address	= bcmgenet_set_mac_addr,
+	.ndo_eth_ioctl		= phy_do_ioctl_running,
+	.ndo_set_features	= bcmgenet_set_features,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= bcmgenet_poll_controller,
+#endif
+	.ndo_get_stats		= bcmgenet_get_stats,
+	.ndo_change_carrier	= bcmgenet_change_carrier,
+};
+
+/* Array of GENET hardware parameters/characteristics */
+static struct bcmgenet_hw_params bcmgenet_hw_params[] = {
+	[GENET_V1] = {
+		.tx_queues = 0,
+		.tx_bds_per_q = 0,
+		.rx_queues = 0,
+		.rx_bds_per_q = 0,
+		.bp_in_en_shift = 16,
+		.bp_in_mask = 0xffff,
+		.hfb_filter_cnt = 16,
+		.qtag_mask = 0x1F,
+		.hfb_offset = 0x1000,
+		.rdma_offset = 0x2000,
+		.tdma_offset = 0x3000,
+		.words_per_bd = 2,
+	},
+	[GENET_V2] = {
+		.tx_queues = 4,
+		.tx_bds_per_q = 32,
+		.rx_queues = 0,
+		.rx_bds_per_q = 0,
+		.bp_in_en_shift = 16,
+		.bp_in_mask = 0xffff,
+		.hfb_filter_cnt = 16,
+		.qtag_mask = 0x1F,
+		.tbuf_offset = 0x0600,
+		.hfb_offset = 0x1000,
+		.hfb_reg_offset = 0x2000,
+		.rdma_offset = 0x3000,
+		.tdma_offset = 0x4000,
+		.words_per_bd = 2,
+		.flags = GENET_HAS_EXT,
+	},
+	[GENET_V3] = {
+		.tx_queues = 4,
+		.tx_bds_per_q = 32,
+		.rx_queues = 0,
+		.rx_bds_per_q = 0,
+		.bp_in_en_shift = 17,
+		.bp_in_mask = 0x1ffff,
+		.hfb_filter_cnt = 48,
+		.hfb_filter_size = 128,
+		.qtag_mask = 0x3F,
+		.tbuf_offset = 0x0600,
+		.hfb_offset = 0x8000,
+		.hfb_reg_offset = 0xfc00,
+		.rdma_offset = 0x10000,
+		.tdma_offset = 0x11000,
+		.words_per_bd = 2,
+		.flags = GENET_HAS_EXT | GENET_HAS_MDIO_INTR |
+			 GENET_HAS_MOCA_LINK_DET,
+	},
+	[GENET_V4] = {
+		.tx_queues = 4,
+		.tx_bds_per_q = 32,
+		.rx_queues = 0,
+		.rx_bds_per_q = 0,
+		.bp_in_en_shift = 17,
+		.bp_in_mask = 0x1ffff,
+		.hfb_filter_cnt = 48,
+		.hfb_filter_size = 128,
+		.qtag_mask = 0x3F,
+		.tbuf_offset = 0x0600,
+		.hfb_offset = 0x8000,
+		.hfb_reg_offset = 0xfc00,
+		.rdma_offset = 0x2000,
+		.tdma_offset = 0x4000,
+		.words_per_bd = 3,
+		.flags = GENET_HAS_40BITS | GENET_HAS_EXT |
+			 GENET_HAS_MDIO_INTR | GENET_HAS_MOCA_LINK_DET,
+	},
+	[GENET_V5] = {
+		.tx_queues = 4,
+		.tx_bds_per_q = 32,
+		.rx_queues = 0,
+		.rx_bds_per_q = 0,
+		.bp_in_en_shift = 17,
+		.bp_in_mask = 0x1ffff,
+		.hfb_filter_cnt = 48,
+		.hfb_filter_size = 128,
+		.qtag_mask = 0x3F,
+		.tbuf_offset = 0x0600,
+		.hfb_offset = 0x8000,
+		.hfb_reg_offset = 0xfc00,
+		.rdma_offset = 0x2000,
+		.tdma_offset = 0x4000,
+		.words_per_bd = 3,
+		.flags = GENET_HAS_40BITS | GENET_HAS_EXT |
+			 GENET_HAS_MDIO_INTR | GENET_HAS_MOCA_LINK_DET,
+	},
+};
+
+/* Infer hardware parameters from the detected GENET version */
+static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv)
+{
+	struct bcmgenet_hw_params *params;
+	u32 reg;
+	u8 major;
+	u16 gphy_rev;
+
+	if (GENET_IS_V5(priv) || GENET_IS_V4(priv)) {
+		bcmgenet_dma_regs = bcmgenet_dma_regs_v3plus;
+		genet_dma_ring_regs = genet_dma_ring_regs_v4;
+	} else if (GENET_IS_V3(priv)) {
+		bcmgenet_dma_regs = bcmgenet_dma_regs_v3plus;
+		genet_dma_ring_regs = genet_dma_ring_regs_v123;
+	} else if (GENET_IS_V2(priv)) {
+		bcmgenet_dma_regs = bcmgenet_dma_regs_v2;
+		genet_dma_ring_regs = genet_dma_ring_regs_v123;
+	} else if (GENET_IS_V1(priv)) {
+		bcmgenet_dma_regs = bcmgenet_dma_regs_v1;
+		genet_dma_ring_regs = genet_dma_ring_regs_v123;
+	}
+
+	/* enum genet_version starts at 1 */
+	priv->hw_params = &bcmgenet_hw_params[priv->version];
+	params = priv->hw_params;
+
+	/* Read GENET HW version */
+	reg = bcmgenet_sys_readl(priv, SYS_REV_CTRL);
+	major = (reg >> 24 & 0x0f);
+	if (major == 6)
+		major = 5;
+	else if (major == 5)
+		major = 4;
+	else if (major == 0)
+		major = 1;
+	if (major != priv->version) {
+		dev_err(&priv->pdev->dev,
+			"GENET version mismatch, got: %d, configured for: %d\n",
+			major, priv->version);
+	}
+
+	/* Print the GENET core version */
+	dev_info(&priv->pdev->dev, "GENET " GENET_VER_FMT,
+		 major, (reg >> 16) & 0x0f, reg & 0xffff);
+
+	/* Store the integrated PHY revision for the MDIO probing function
+	 * to pass this information to the PHY driver. The PHY driver expects
+	 * to find the PHY major revision in bits 15:8 while the GENET register
+	 * stores that information in bits 7:0, account for that.
+	 *
+	 * On newer chips, starting with PHY revision G0, a new scheme is
+	 * deployed similar to the Starfighter 2 switch with GPHY major
+	 * revision in bits 15:8 and patch level in bits 7:0. Major revision 0
+	 * is reserved as well as special value 0x01ff, we have a small
+	 * heuristic to check for the new GPHY revision and re-arrange things
+	 * so the GPHY driver is happy.
+	 */
+	gphy_rev = reg & 0xffff;
+
+	if (GENET_IS_V5(priv)) {
+		/* The EPHY revision should come from the MDIO registers of
+		 * the PHY not from GENET.
+		 */
+		if (gphy_rev != 0) {
+			pr_warn("GENET is reporting EPHY revision: 0x%04x\n",
+				gphy_rev);
+		}
+	/* This is reserved so should require special treatment */
+	} else if (gphy_rev == 0 || gphy_rev == 0x01ff) {
+		pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev);
+		return;
+	/* This is the good old scheme, just GPHY major, no minor nor patch */
+	} else if ((gphy_rev & 0xf0) != 0) {
+		priv->gphy_rev = gphy_rev << 8;
+	/* This is the new scheme, GPHY major rolls over with 0x10 = rev G0 */
+	} else if ((gphy_rev & 0xff00) != 0) {
+		priv->gphy_rev = gphy_rev;
+	}
+
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+	if (!(params->flags & GENET_HAS_40BITS))
+		pr_warn("GENET does not support 40-bits PA\n");
+#endif
+
+	pr_debug("Configuration for version: %d\n"
+		"TXq: %1d, TXqBDs: %1d, RXq: %1d, RXqBDs: %1d\n"
+		"BP << en: %2d, BP msk: 0x%05x\n"
+		"HFB count: %2d, QTAQ msk: 0x%05x\n"
+		"TBUF: 0x%04x, HFB: 0x%04x, HFBreg: 0x%04x\n"
+		"RDMA: 0x%05x, TDMA: 0x%05x\n"
+		"Words/BD: %d\n",
+		priv->version,
+		params->tx_queues, params->tx_bds_per_q,
+		params->rx_queues, params->rx_bds_per_q,
+		params->bp_in_en_shift, params->bp_in_mask,
+		params->hfb_filter_cnt, params->qtag_mask,
+		params->tbuf_offset, params->hfb_offset,
+		params->hfb_reg_offset,
+		params->rdma_offset, params->tdma_offset,
+		params->words_per_bd);
+}
+
+struct bcmgenet_plat_data {
+	enum bcmgenet_version version;
+	u32 dma_max_burst_length;
+	bool ephy_16nm;
+};
+
+static const struct bcmgenet_plat_data v1_plat_data = {
+	.version = GENET_V1,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v2_plat_data = {
+	.version = GENET_V2,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v3_plat_data = {
+	.version = GENET_V3,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v4_plat_data = {
+	.version = GENET_V4,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data v5_plat_data = {
+	.version = GENET_V5,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+};
+
+static const struct bcmgenet_plat_data bcm2711_plat_data = {
+	.version = GENET_V5,
+	.dma_max_burst_length = 0x08,
+};
+
+static const struct bcmgenet_plat_data bcm7712_plat_data = {
+	.version = GENET_V5,
+	.dma_max_burst_length = DMA_MAX_BURST_LENGTH,
+	.ephy_16nm = true,
+};
+
+static const struct of_device_id bcmgenet_match[] = {
+	{ .compatible = "brcm,genet-v1", .data = &v1_plat_data },
+	{ .compatible = "brcm,genet-v2", .data = &v2_plat_data },
+	{ .compatible = "brcm,genet-v3", .data = &v3_plat_data },
+	{ .compatible = "brcm,genet-v4", .data = &v4_plat_data },
+	{ .compatible = "brcm,genet-v5", .data = &v5_plat_data },
+	{ .compatible = "brcm,bcm2711-genet-v5", .data = &bcm2711_plat_data },
+	{ .compatible = "brcm,bcm7712-genet-v5", .data = &bcm7712_plat_data },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, bcmgenet_match);
+
+static int bcmgenet_probe(struct platform_device *pdev)
+{
+	struct bcmgenet_platform_data *pd = pdev->dev.platform_data;
+	const struct bcmgenet_plat_data *pdata;
+	struct bcmgenet_priv *priv;
+	struct net_device *dev;
+	unsigned int i;
+	int err = -EIO;
+
+	/* Up to GENET_MAX_MQ_CNT + 1 TX queues and RX queues */
+	dev = alloc_etherdev_mqs(sizeof(*priv), GENET_MAX_MQ_CNT + 1,
+				 GENET_MAX_MQ_CNT + 1);
+	if (!dev) {
+		dev_err(&pdev->dev, "can't allocate net device\n");
+		return -ENOMEM;
+	}
+
+	priv = netdev_priv(dev);
+	priv->irq0 = platform_get_irq(pdev, 0);
+	if (priv->irq0 < 0) {
+		err = priv->irq0;
+		goto err;
+	}
+	priv->irq1 = platform_get_irq(pdev, 1);
+	if (priv->irq1 < 0) {
+		err = priv->irq1;
+		goto err;
+	}
+	priv->wol_irq = platform_get_irq_optional(pdev, 2);
+	if (priv->wol_irq == -EPROBE_DEFER) {
+		err = priv->wol_irq;
+		goto err;
+	}
+
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->base)) {
+		err = PTR_ERR(priv->base);
+		goto err;
+	}
+
+	spin_lock_init(&priv->lock);
+
+	/* Set default pause parameters */
+	priv->autoneg_pause = 1;
+	priv->tx_pause = 1;
+	priv->rx_pause = 1;
+
+	SET_NETDEV_DEV(dev, &pdev->dev);
+	dev_set_drvdata(&pdev->dev, dev);
+	dev->watchdog_timeo = 2 * HZ;
+	dev->ethtool_ops = &bcmgenet_ethtool_ops;
+	dev->netdev_ops = &bcmgenet_netdev_ops;
+
+	priv->msg_enable = netif_msg_init(-1, GENET_MSG_DEFAULT);
+
+	/* Set default features */
+	dev->features |= NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM |
+			 NETIF_F_RXCSUM;
+	dev->hw_features |= dev->features;
+	dev->vlan_features |= dev->features;
+
+	/* Request the WOL interrupt and advertise suspend if available */
+	priv->wol_irq_disabled = true;
+	if (priv->wol_irq > 0) {
+		err = devm_request_irq(&pdev->dev, priv->wol_irq,
+				       bcmgenet_wol_isr, 0, dev->name, priv);
+		if (!err)
+			device_set_wakeup_capable(&pdev->dev, 1);
+	}
+
+	/* Set the needed headroom to account for any possible
+	 * features enabling/disabling at runtime
+	 */
+	dev->needed_headroom += 64;
+
+	priv->dev = dev;
+	priv->pdev = pdev;
+
+	pdata = device_get_match_data(&pdev->dev);
+	if (pdata) {
+		priv->version = pdata->version;
+		priv->dma_max_burst_length = pdata->dma_max_burst_length;
+		priv->ephy_16nm = pdata->ephy_16nm;
+	} else {
+		priv->version = pd->genet_version;
+		priv->dma_max_burst_length = DMA_MAX_BURST_LENGTH;
+	}
+
+	priv->clk = devm_clk_get_optional(&priv->pdev->dev, "enet");
+	if (IS_ERR(priv->clk)) {
+		dev_dbg(&priv->pdev->dev, "failed to get enet clock\n");
+		err = PTR_ERR(priv->clk);
+		goto err;
+	}
+
+	err = clk_prepare_enable(priv->clk);
+	if (err)
+		goto err;
+
+	bcmgenet_set_hw_params(priv);
+
+	err = -EIO;
+	if (priv->hw_params->flags & GENET_HAS_40BITS)
+		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40));
+	if (err)
+		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (err)
+		goto err_clk_disable;
+
+	/* Mii wait queue */
+	init_waitqueue_head(&priv->wq);
+	/* Always use RX_BUF_LENGTH (2KB) buffer for all chips */
+	priv->rx_buf_len = RX_BUF_LENGTH;
+	INIT_WORK(&priv->bcmgenet_irq_work, bcmgenet_irq_task);
+
+	priv->clk_wol = devm_clk_get_optional(&priv->pdev->dev, "enet-wol");
+	if (IS_ERR(priv->clk_wol)) {
+		dev_dbg(&priv->pdev->dev, "failed to get enet-wol clock\n");
+		err = PTR_ERR(priv->clk_wol);
+		goto err_clk_disable;
+	}
+
+	priv->clk_eee = devm_clk_get_optional(&priv->pdev->dev, "enet-eee");
+	if (IS_ERR(priv->clk_eee)) {
+		dev_dbg(&priv->pdev->dev, "failed to get enet-eee clock\n");
+		err = PTR_ERR(priv->clk_eee);
+		goto err_clk_disable;
+	}
+
+	/* If this is an internal GPHY, power it on now, before UniMAC is
+	 * brought out of reset as absolutely no UniMAC activity is allowed
+	 */
+	if (device_get_phy_mode(&pdev->dev) == PHY_INTERFACE_MODE_INTERNAL)
+		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
+
+	if (pd && !IS_ERR_OR_NULL(pd->mac_address))
+		eth_hw_addr_set(dev, pd->mac_address);
+	else
+		if (device_get_ethdev_address(&pdev->dev, dev))
+			if (has_acpi_companion(&pdev->dev)) {
+				u8 addr[ETH_ALEN];
+
+				bcmgenet_get_hw_addr(priv, addr);
+				eth_hw_addr_set(dev, addr);
+			}
+
+	if (!is_valid_ether_addr(dev->dev_addr)) {
+		dev_warn(&pdev->dev, "using random Ethernet MAC\n");
+		eth_hw_addr_random(dev);
+	}
+
+	reset_umac(priv);
+
+	err = bcmgenet_mii_init(dev);
+	if (err)
+		goto err_clk_disable;
+
+	/* setup number of real queues  + 1 (GENET_V1 has 0 hardware queues
+	 * just the ring 16 descriptor based TX
+	 */
+	netif_set_real_num_tx_queues(priv->dev, priv->hw_params->tx_queues + 1);
+	netif_set_real_num_rx_queues(priv->dev, priv->hw_params->rx_queues + 1);
+
+	/* Set default coalescing parameters */
+	for (i = 0; i < priv->hw_params->rx_queues; i++)
+		priv->rx_rings[i].rx_max_coalesced_frames = 1;
+	priv->rx_rings[DESC_INDEX].rx_max_coalesced_frames = 1;
+
+	/* libphy will determine the link state */
+	netif_carrier_off(dev);
+
+	/* Turn off the main clock, WOL clock is handled separately */
+	clk_disable_unprepare(priv->clk);
+
+	err = register_netdev(dev);
+	if (err) {
+		bcmgenet_mii_exit(dev);
+		goto err;
+	}
+
+	return err;
+
+err_clk_disable:
+	clk_disable_unprepare(priv->clk);
+err:
+	free_netdev(dev);
+	return err;
+}
+
+static int bcmgenet_remove(struct platform_device *pdev)
+{
+	struct bcmgenet_priv *priv = dev_to_priv(&pdev->dev);
+
+	dev_set_drvdata(&pdev->dev, NULL);
+	unregister_netdev(priv->dev);
+	bcmgenet_mii_exit(priv->dev);
+	free_netdev(priv->dev);
+
+	return 0;
+}
+
+static void bcmgenet_shutdown(struct platform_device *pdev)
+{
+	bcmgenet_remove(pdev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bcmgenet_resume_noirq(struct device *d)
+{
+	struct net_device *dev = dev_get_drvdata(d);
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int ret;
+	u32 reg;
+
+	if (!netif_running(dev))
+		return 0;
+
+	/* Turn on the clock */
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
+
+	if (device_may_wakeup(d) && priv->wolopts) {
+		/* Account for Wake-on-LAN events and clear those events
+		 * (Some devices need more time between enabling the clocks
+		 *  and the interrupt register reflecting the wake event so
+		 *  read the register twice)
+		 */
+		reg = bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_STAT);
+		reg = bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_STAT);
+		if (reg & UMAC_IRQ_WAKE_EVENT)
+			pm_wakeup_event(&priv->pdev->dev, 0);
+	}
+
+	bcmgenet_intrl2_0_writel(priv, UMAC_IRQ_WAKE_EVENT, INTRL2_CPU_CLEAR);
+
+	return 0;
+}
+
+static int bcmgenet_resume(struct device *d)
+{
+	struct net_device *dev = dev_get_drvdata(d);
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct bcmgenet_rxnfc_rule *rule;
+	unsigned long dma_ctrl;
+	int ret;
+
+	if (!netif_running(dev))
+		return 0;
+
+	/* From WOL-enabled suspend, switch to regular clock */
+	if (device_may_wakeup(d) && priv->wolopts)
+		bcmgenet_power_up(priv, GENET_POWER_WOL_MAGIC);
+
+	/* If this is an internal GPHY, power it back on now, before UniMAC is
+	 * brought out of reset as absolutely no UniMAC activity is allowed
+	 */
+	if (priv->internal_phy)
+		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
+
+	bcmgenet_umac_reset(priv);
+
+	init_umac(priv);
+
+	phy_init_hw(dev->phydev);
+
+	/* Speed settings must be restored */
+	genphy_config_aneg(dev->phydev);
+	bcmgenet_mii_config(priv->dev, false);
+
+	/* Restore enabled features */
+	bcmgenet_set_features(dev, dev->features);
+
+	bcmgenet_set_hw_addr(priv, dev->dev_addr);
+
+	/* Restore hardware filters */
+	bcmgenet_hfb_clear(priv);
+	list_for_each_entry(rule, &priv->rxnfc_list, list)
+		if (rule->state != BCMGENET_RXNFC_STATE_UNUSED)
+			bcmgenet_hfb_create_rxnfc_filter(priv, rule);
+
+	/* Disable RX/TX DMA and flush TX queues */
+	dma_ctrl = bcmgenet_dma_disable(priv);
+
+	/* Reinitialize TDMA and RDMA and SW housekeeping */
+	ret = bcmgenet_init_dma(priv);
+	if (ret) {
+		netdev_err(dev, "failed to initialize DMA\n");
+		goto out_clk_disable;
+	}
+
+	/* Always enable ring 16 - descriptor ring */
+	bcmgenet_enable_dma(priv, dma_ctrl);
+
+	if (!device_may_wakeup(d))
+		phy_resume(dev->phydev);
+
+	bcmgenet_netif_start(dev);
+
+	netif_device_attach(dev);
+
+	return 0;
+
+out_clk_disable:
+	if (priv->internal_phy)
+		bcmgenet_power_down(priv, GENET_POWER_PASSIVE);
+	clk_disable_unprepare(priv->clk);
+	return ret;
+}
+
+static int bcmgenet_suspend(struct device *d)
+{
+	struct net_device *dev = dev_get_drvdata(d);
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return 0;
+
+	netif_device_detach(dev);
+
+	bcmgenet_netif_stop(dev, true);
+
+	if (!device_may_wakeup(d))
+		phy_suspend(dev->phydev);
+
+	/* Disable filtering */
+	bcmgenet_hfb_reg_writel(priv, 0, HFB_CTRL);
+
+	return 0;
+}
+
+static int bcmgenet_suspend_noirq(struct device *d)
+{
+	struct net_device *dev = dev_get_drvdata(d);
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int ret = 0;
+
+	if (!netif_running(dev))
+		return 0;
+
+	/* Prepare the device for Wake-on-LAN and switch to the slow clock */
+	if (device_may_wakeup(d) && priv->wolopts)
+		ret = bcmgenet_power_down(priv, GENET_POWER_WOL_MAGIC);
+	else if (priv->internal_phy)
+		ret = bcmgenet_power_down(priv, GENET_POWER_PASSIVE);
+
+	/* Let the framework handle resumption and leave the clocks on */
+	if (ret)
+		return ret;
+
+	/* Turn off the clocks */
+	clk_disable_unprepare(priv->clk);
+
+	return 0;
+}
+#else
+#define bcmgenet_suspend	NULL
+#define bcmgenet_suspend_noirq	NULL
+#define bcmgenet_resume		NULL
+#define bcmgenet_resume_noirq	NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops bcmgenet_pm_ops = {
+	.suspend	= bcmgenet_suspend,
+	.suspend_noirq	= bcmgenet_suspend_noirq,
+	.resume		= bcmgenet_resume,
+	.resume_noirq	= bcmgenet_resume_noirq,
+};
+
+static const struct acpi_device_id genet_acpi_match[] = {
+	{ "BCM6E4E", (kernel_ulong_t)&bcm2711_plat_data },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, genet_acpi_match);
+
+static struct platform_driver bcmgenet_driver = {
+	.probe	= bcmgenet_probe,
+	.remove	= bcmgenet_remove,
+	.shutdown = bcmgenet_shutdown,
+	.driver	= {
+		.name	= "bcmgenet",
+		.of_match_table = bcmgenet_match,
+		.pm	= &bcmgenet_pm_ops,
+		.acpi_match_table = genet_acpi_match,
+	},
+};
+module_platform_driver(bcmgenet_driver);
+
+MODULE_AUTHOR("Broadcom Corporation");
+MODULE_DESCRIPTION("Broadcom GENET Ethernet controller driver");
+MODULE_ALIAS("platform:bcmgenet");
+MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: mdio-bcm-unimac");
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
new file mode 100644
index 000000000..1985c0ec4
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -0,0 +1,709 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2014-2020 Broadcom
+ */
+
+#ifndef __BCMGENET_H__
+#define __BCMGENET_H__
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/mii.h>
+#include <linux/if_vlan.h>
+#include <linux/phy.h>
+#include <linux/dim.h>
+#include <linux/ethtool.h>
+
+#include "../unimac.h"
+
+/* total number of Buffer Descriptors, same for Rx/Tx */
+#define TOTAL_DESC				256
+
+/* which ring is descriptor based */
+#define DESC_INDEX				16
+
+/* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(6) + FCS(4) = 1528.
+ * 1536 is multiple of 256 bytes
+ */
+#define ENET_BRCM_TAG_LEN	6
+#define ENET_PAD		8
+#define ENET_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
+				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
+#define DMA_MAX_BURST_LENGTH    0x10
+
+/* misc. configuration */
+#define MAX_NUM_OF_FS_RULES		16
+#define CLEAR_ALL_HFB			0xFF
+#define DMA_FC_THRESH_HI		(TOTAL_DESC >> 4)
+#define DMA_FC_THRESH_LO		5
+
+/* 64B receive/transmit status block */
+struct status_64 {
+	u32	length_status;		/* length and peripheral status */
+	u32	ext_status;		/* Extended status*/
+	u32	rx_csum;		/* partial rx checksum */
+	u32	unused1[9];		/* unused */
+	u32	tx_csum_info;		/* Tx checksum info. */
+	u32	unused2[3];		/* unused */
+};
+
+/* Rx status bits */
+#define STATUS_RX_EXT_MASK		0x1FFFFF
+#define STATUS_RX_CSUM_MASK		0xFFFF
+#define STATUS_RX_CSUM_OK		0x10000
+#define STATUS_RX_CSUM_FR		0x20000
+#define STATUS_RX_PROTO_TCP		0
+#define STATUS_RX_PROTO_UDP		1
+#define STATUS_RX_PROTO_ICMP		2
+#define STATUS_RX_PROTO_OTHER		3
+#define STATUS_RX_PROTO_MASK		3
+#define STATUS_RX_PROTO_SHIFT		18
+#define STATUS_FILTER_INDEX_MASK	0xFFFF
+/* Tx status bits */
+#define STATUS_TX_CSUM_START_MASK	0X7FFF
+#define STATUS_TX_CSUM_START_SHIFT	16
+#define STATUS_TX_CSUM_PROTO_UDP	0x8000
+#define STATUS_TX_CSUM_OFFSET_MASK	0x7FFF
+#define STATUS_TX_CSUM_LV		0x80000000
+
+/* DMA Descriptor */
+#define DMA_DESC_LENGTH_STATUS	0x00	/* in bytes of data in buffer */
+#define DMA_DESC_ADDRESS_LO	0x04	/* lower bits of PA */
+#define DMA_DESC_ADDRESS_HI	0x08	/* upper 32 bits of PA, GENETv4+ */
+
+/* Rx/Tx common counter group */
+struct bcmgenet_pkt_counters {
+	u32	cnt_64;		/* RO Received/Transmited 64 bytes packet */
+	u32	cnt_127;	/* RO Rx/Tx 127 bytes packet */
+	u32	cnt_255;	/* RO Rx/Tx 65-255 bytes packet */
+	u32	cnt_511;	/* RO Rx/Tx 256-511 bytes packet */
+	u32	cnt_1023;	/* RO Rx/Tx 512-1023 bytes packet */
+	u32	cnt_1518;	/* RO Rx/Tx 1024-1518 bytes packet */
+	u32	cnt_mgv;	/* RO Rx/Tx 1519-1522 good VLAN packet */
+	u32	cnt_2047;	/* RO Rx/Tx 1522-2047 bytes packet*/
+	u32	cnt_4095;	/* RO Rx/Tx 2048-4095 bytes packet*/
+	u32	cnt_9216;	/* RO Rx/Tx 4096-9216 bytes packet*/
+};
+
+/* RSV, Receive Status Vector */
+struct bcmgenet_rx_counters {
+	struct  bcmgenet_pkt_counters pkt_cnt;
+	u32	pkt;		/* RO (0x428) Received pkt count*/
+	u32	bytes;		/* RO Received byte count */
+	u32	mca;		/* RO # of Received multicast pkt */
+	u32	bca;		/* RO # of Receive broadcast pkt */
+	u32	fcs;		/* RO # of Received FCS error  */
+	u32	cf;		/* RO # of Received control frame pkt*/
+	u32	pf;		/* RO # of Received pause frame pkt */
+	u32	uo;		/* RO # of unknown op code pkt */
+	u32	aln;		/* RO # of alignment error count */
+	u32	flr;		/* RO # of frame length out of range count */
+	u32	cde;		/* RO # of code error pkt */
+	u32	fcr;		/* RO # of carrier sense error pkt */
+	u32	ovr;		/* RO # of oversize pkt*/
+	u32	jbr;		/* RO # of jabber count */
+	u32	mtue;		/* RO # of MTU error pkt*/
+	u32	pok;		/* RO # of Received good pkt */
+	u32	uc;		/* RO # of unicast pkt */
+	u32	ppp;		/* RO # of PPP pkt */
+	u32	rcrc;		/* RO (0x470),# of CRC match pkt */
+};
+
+/* TSV, Transmit Status Vector */
+struct bcmgenet_tx_counters {
+	struct bcmgenet_pkt_counters pkt_cnt;
+	u32	pkts;		/* RO (0x4a8) Transmited pkt */
+	u32	mca;		/* RO # of xmited multicast pkt */
+	u32	bca;		/* RO # of xmited broadcast pkt */
+	u32	pf;		/* RO # of xmited pause frame count */
+	u32	cf;		/* RO # of xmited control frame count */
+	u32	fcs;		/* RO # of xmited FCS error count */
+	u32	ovr;		/* RO # of xmited oversize pkt */
+	u32	drf;		/* RO # of xmited deferral pkt */
+	u32	edf;		/* RO # of xmited Excessive deferral pkt*/
+	u32	scl;		/* RO # of xmited single collision pkt */
+	u32	mcl;		/* RO # of xmited multiple collision pkt*/
+	u32	lcl;		/* RO # of xmited late collision pkt */
+	u32	ecl;		/* RO # of xmited excessive collision pkt*/
+	u32	frg;		/* RO # of xmited fragments pkt*/
+	u32	ncl;		/* RO # of xmited total collision count */
+	u32	jbr;		/* RO # of xmited jabber count*/
+	u32	bytes;		/* RO # of xmited byte count */
+	u32	pok;		/* RO # of xmited good pkt */
+	u32	uc;		/* RO (0x0x4f0)# of xmited unitcast pkt */
+};
+
+struct bcmgenet_mib_counters {
+	struct bcmgenet_rx_counters rx;
+	struct bcmgenet_tx_counters tx;
+	u32	rx_runt_cnt;
+	u32	rx_runt_fcs;
+	u32	rx_runt_fcs_align;
+	u32	rx_runt_bytes;
+	u32	rbuf_ovflow_cnt;
+	u32	rbuf_err_cnt;
+	u32	mdf_err_cnt;
+	u32	alloc_rx_buff_failed;
+	u32	rx_dma_failed;
+	u32	tx_dma_failed;
+	u32	tx_realloc_tsb;
+	u32	tx_realloc_tsb_failed;
+};
+
+#define UMAC_MIB_START			0x400
+
+#define UMAC_MDIO_CMD			0x614
+#define  MDIO_START_BUSY		(1 << 29)
+#define  MDIO_READ_FAIL			(1 << 28)
+#define  MDIO_RD			(2 << 26)
+#define  MDIO_WR			(1 << 26)
+#define  MDIO_PMD_SHIFT			21
+#define  MDIO_PMD_MASK			0x1F
+#define  MDIO_REG_SHIFT			16
+#define  MDIO_REG_MASK			0x1F
+
+#define UMAC_RBUF_OVFL_CNT_V1		0x61C
+#define RBUF_OVFL_CNT_V2		0x80
+#define RBUF_OVFL_CNT_V3PLUS		0x94
+
+#define UMAC_MPD_CTRL			0x620
+#define  MPD_EN				(1 << 0)
+#define  MPD_PW_EN			(1 << 27)
+#define  MPD_MSEQ_LEN_SHIFT		16
+#define  MPD_MSEQ_LEN_MASK		0xFF
+
+#define UMAC_MPD_PW_MS			0x624
+#define UMAC_MPD_PW_LS			0x628
+#define UMAC_RBUF_ERR_CNT_V1		0x634
+#define RBUF_ERR_CNT_V2			0x84
+#define RBUF_ERR_CNT_V3PLUS		0x98
+#define UMAC_MDF_ERR_CNT		0x638
+#define UMAC_MDF_CTRL			0x650
+#define UMAC_MDF_ADDR			0x654
+#define UMAC_MIB_CTRL			0x580
+#define  MIB_RESET_RX			(1 << 0)
+#define  MIB_RESET_RUNT			(1 << 1)
+#define  MIB_RESET_TX			(1 << 2)
+
+#define RBUF_CTRL			0x00
+#define  RBUF_64B_EN			(1 << 0)
+#define  RBUF_ALIGN_2B			(1 << 1)
+#define  RBUF_BAD_DIS			(1 << 2)
+
+#define RBUF_STATUS			0x0C
+#define  RBUF_STATUS_WOL		(1 << 0)
+#define  RBUF_STATUS_MPD_INTR_ACTIVE	(1 << 1)
+#define  RBUF_STATUS_ACPI_INTR_ACTIVE	(1 << 2)
+
+#define RBUF_CHK_CTRL			0x14
+#define  RBUF_RXCHK_EN			(1 << 0)
+#define  RBUF_SKIP_FCS			(1 << 4)
+#define  RBUF_L3_PARSE_DIS		(1 << 5)
+
+#define RBUF_ENERGY_CTRL		0x9c
+#define  RBUF_EEE_EN			(1 << 0)
+#define  RBUF_PM_EN			(1 << 1)
+
+#define RBUF_TBUF_SIZE_CTRL		0xb4
+
+#define RBUF_HFB_CTRL_V1		0x38
+#define  RBUF_HFB_FILTER_EN_SHIFT	16
+#define  RBUF_HFB_FILTER_EN_MASK	0xffff0000
+#define  RBUF_HFB_EN			(1 << 0)
+#define  RBUF_HFB_256B			(1 << 1)
+#define  RBUF_ACPI_EN			(1 << 2)
+
+#define RBUF_HFB_LEN_V1			0x3C
+#define  RBUF_FLTR_LEN_MASK		0xFF
+#define  RBUF_FLTR_LEN_SHIFT		8
+
+#define TBUF_CTRL			0x00
+#define  TBUF_64B_EN			(1 << 0)
+#define TBUF_BP_MC			0x0C
+#define TBUF_ENERGY_CTRL		0x14
+#define  TBUF_EEE_EN			(1 << 0)
+#define  TBUF_PM_EN			(1 << 1)
+
+#define TBUF_CTRL_V1			0x80
+#define TBUF_BP_MC_V1			0xA0
+
+#define HFB_CTRL			0x00
+#define HFB_FLT_ENABLE_V3PLUS		0x04
+#define HFB_FLT_LEN_V2			0x04
+#define HFB_FLT_LEN_V3PLUS		0x1C
+
+/* uniMac intrl2 registers */
+#define INTRL2_CPU_STAT			0x00
+#define INTRL2_CPU_SET			0x04
+#define INTRL2_CPU_CLEAR		0x08
+#define INTRL2_CPU_MASK_STATUS		0x0C
+#define INTRL2_CPU_MASK_SET		0x10
+#define INTRL2_CPU_MASK_CLEAR		0x14
+
+/* INTRL2 instance 0 definitions */
+#define UMAC_IRQ_SCB			(1 << 0)
+#define UMAC_IRQ_EPHY			(1 << 1)
+#define UMAC_IRQ_PHY_DET_R		(1 << 2)
+#define UMAC_IRQ_PHY_DET_F		(1 << 3)
+#define UMAC_IRQ_LINK_UP		(1 << 4)
+#define UMAC_IRQ_LINK_DOWN		(1 << 5)
+#define UMAC_IRQ_LINK_EVENT		(UMAC_IRQ_LINK_UP | UMAC_IRQ_LINK_DOWN)
+#define UMAC_IRQ_UMAC			(1 << 6)
+#define UMAC_IRQ_UMAC_TSV		(1 << 7)
+#define UMAC_IRQ_TBUF_UNDERRUN		(1 << 8)
+#define UMAC_IRQ_RBUF_OVERFLOW		(1 << 9)
+#define UMAC_IRQ_HFB_SM			(1 << 10)
+#define UMAC_IRQ_HFB_MM			(1 << 11)
+#define UMAC_IRQ_MPD_R			(1 << 12)
+#define UMAC_IRQ_WAKE_EVENT		(UMAC_IRQ_HFB_SM | UMAC_IRQ_HFB_MM | \
+					 UMAC_IRQ_MPD_R)
+#define UMAC_IRQ_RXDMA_MBDONE		(1 << 13)
+#define UMAC_IRQ_RXDMA_PDONE		(1 << 14)
+#define UMAC_IRQ_RXDMA_BDONE		(1 << 15)
+#define UMAC_IRQ_RXDMA_DONE		UMAC_IRQ_RXDMA_MBDONE
+#define UMAC_IRQ_TXDMA_MBDONE		(1 << 16)
+#define UMAC_IRQ_TXDMA_PDONE		(1 << 17)
+#define UMAC_IRQ_TXDMA_BDONE		(1 << 18)
+#define UMAC_IRQ_TXDMA_DONE		UMAC_IRQ_TXDMA_MBDONE
+
+/* Only valid for GENETv3+ */
+#define UMAC_IRQ_MDIO_DONE		(1 << 23)
+#define UMAC_IRQ_MDIO_ERROR		(1 << 24)
+
+/* INTRL2 instance 1 definitions */
+#define UMAC_IRQ1_TX_INTR_MASK		0xFFFF
+#define UMAC_IRQ1_RX_INTR_MASK		0xFFFF
+#define UMAC_IRQ1_RX_INTR_SHIFT		16
+
+/* Register block offsets */
+#define GENET_SYS_OFF			0x0000
+#define GENET_GR_BRIDGE_OFF		0x0040
+#define GENET_EXT_OFF			0x0080
+#define GENET_INTRL2_0_OFF		0x0200
+#define GENET_INTRL2_1_OFF		0x0240
+#define GENET_RBUF_OFF			0x0300
+#define GENET_UMAC_OFF			0x0800
+
+/* SYS block offsets and register definitions */
+#define SYS_REV_CTRL			0x00
+#define SYS_PORT_CTRL			0x04
+#define  PORT_MODE_INT_EPHY		0
+#define  PORT_MODE_INT_GPHY		1
+#define  PORT_MODE_EXT_EPHY		2
+#define  PORT_MODE_EXT_GPHY		3
+#define  PORT_MODE_EXT_RVMII_25		(4 | BIT(4))
+#define  PORT_MODE_EXT_RVMII_50		4
+#define  LED_ACT_SOURCE_MAC		(1 << 9)
+
+#define SYS_RBUF_FLUSH_CTRL		0x08
+#define SYS_TBUF_FLUSH_CTRL		0x0C
+#define RBUF_FLUSH_CTRL_V1		0x04
+
+/* Ext block register offsets and definitions */
+#define EXT_EXT_PWR_MGMT		0x00
+#define  EXT_PWR_DOWN_BIAS		(1 << 0)
+#define  EXT_PWR_DOWN_DLL		(1 << 1)
+#define  EXT_PWR_DOWN_PHY		(1 << 2)
+#define  EXT_PWR_DN_EN_LD		(1 << 3)
+#define  EXT_ENERGY_DET			(1 << 4)
+#define  EXT_IDDQ_FROM_PHY		(1 << 5)
+#define  EXT_IDDQ_GLBL_PWR		(1 << 7)
+#define  EXT_PHY_RESET			(1 << 8)
+#define  EXT_ENERGY_DET_MASK		(1 << 12)
+#define  EXT_PWR_DOWN_PHY_TX		(1 << 16)
+#define  EXT_PWR_DOWN_PHY_RX		(1 << 17)
+#define  EXT_PWR_DOWN_PHY_SD		(1 << 18)
+#define  EXT_PWR_DOWN_PHY_RD		(1 << 19)
+#define  EXT_PWR_DOWN_PHY_EN		(1 << 20)
+
+#define EXT_RGMII_OOB_CTRL		0x0C
+#define  RGMII_MODE_EN_V123		(1 << 0)
+#define  RGMII_LINK			(1 << 4)
+#define  OOB_DISABLE			(1 << 5)
+#define  RGMII_MODE_EN			(1 << 6)
+#define  ID_MODE_DIS			(1 << 16)
+
+#define EXT_GPHY_CTRL			0x1C
+#define  EXT_CFG_IDDQ_BIAS		(1 << 0)
+#define  EXT_CFG_PWR_DOWN		(1 << 1)
+#define  EXT_CK25_DIS			(1 << 4)
+#define  EXT_CFG_IDDQ_GLOBAL_PWR	(1 << 3)
+#define  EXT_GPHY_RESET			(1 << 5)
+
+/* DMA rings size */
+#define DMA_RING_SIZE			(0x40)
+#define DMA_RINGS_SIZE			(DMA_RING_SIZE * (DESC_INDEX + 1))
+
+/* DMA registers common definitions */
+#define DMA_RW_POINTER_MASK		0x1FF
+#define DMA_P_INDEX_DISCARD_CNT_MASK	0xFFFF
+#define DMA_P_INDEX_DISCARD_CNT_SHIFT	16
+#define DMA_BUFFER_DONE_CNT_MASK	0xFFFF
+#define DMA_BUFFER_DONE_CNT_SHIFT	16
+#define DMA_P_INDEX_MASK		0xFFFF
+#define DMA_C_INDEX_MASK		0xFFFF
+
+/* DMA ring size register */
+#define DMA_RING_SIZE_MASK		0xFFFF
+#define DMA_RING_SIZE_SHIFT		16
+#define DMA_RING_BUFFER_SIZE_MASK	0xFFFF
+
+/* DMA interrupt threshold register */
+#define DMA_INTR_THRESHOLD_MASK		0x01FF
+
+/* DMA XON/XOFF register */
+#define DMA_XON_THREHOLD_MASK		0xFFFF
+#define DMA_XOFF_THRESHOLD_MASK		0xFFFF
+#define DMA_XOFF_THRESHOLD_SHIFT	16
+
+/* DMA flow period register */
+#define DMA_FLOW_PERIOD_MASK		0xFFFF
+#define DMA_MAX_PKT_SIZE_MASK		0xFFFF
+#define DMA_MAX_PKT_SIZE_SHIFT		16
+
+
+/* DMA control register */
+#define DMA_EN				(1 << 0)
+#define DMA_RING_BUF_EN_SHIFT		0x01
+#define DMA_RING_BUF_EN_MASK		0xFFFF
+#define DMA_TSB_SWAP_EN			(1 << 20)
+
+/* DMA status register */
+#define DMA_DISABLED			(1 << 0)
+#define DMA_DESC_RAM_INIT_BUSY		(1 << 1)
+
+/* DMA SCB burst size register */
+#define DMA_SCB_BURST_SIZE_MASK		0x1F
+
+/* DMA activity vector register */
+#define DMA_ACTIVITY_VECTOR_MASK	0x1FFFF
+
+/* DMA backpressure mask register */
+#define DMA_BACKPRESSURE_MASK		0x1FFFF
+#define DMA_PFC_ENABLE			(1 << 31)
+
+/* DMA backpressure status register */
+#define DMA_BACKPRESSURE_STATUS_MASK	0x1FFFF
+
+/* DMA override register */
+#define DMA_LITTLE_ENDIAN_MODE		(1 << 0)
+#define DMA_REGISTER_MODE		(1 << 1)
+
+/* DMA timeout register */
+#define DMA_TIMEOUT_MASK		0xFFFF
+#define DMA_TIMEOUT_VAL			5000	/* micro seconds */
+
+/* TDMA rate limiting control register */
+#define DMA_RATE_LIMIT_EN_MASK		0xFFFF
+
+/* TDMA arbitration control register */
+#define DMA_ARBITER_MODE_MASK		0x03
+#define DMA_RING_BUF_PRIORITY_MASK	0x1F
+#define DMA_RING_BUF_PRIORITY_SHIFT	5
+#define DMA_PRIO_REG_INDEX(q)		((q) / 6)
+#define DMA_PRIO_REG_SHIFT(q)		(((q) % 6) * DMA_RING_BUF_PRIORITY_SHIFT)
+#define DMA_RATE_ADJ_MASK		0xFF
+
+/* Tx/Rx Dma Descriptor common bits*/
+#define DMA_BUFLENGTH_MASK		0x0fff
+#define DMA_BUFLENGTH_SHIFT		16
+#define DMA_OWN				0x8000
+#define DMA_EOP				0x4000
+#define DMA_SOP				0x2000
+#define DMA_WRAP			0x1000
+/* Tx specific Dma descriptor bits */
+#define DMA_TX_UNDERRUN			0x0200
+#define DMA_TX_APPEND_CRC		0x0040
+#define DMA_TX_OW_CRC			0x0020
+#define DMA_TX_DO_CSUM			0x0010
+#define DMA_TX_QTAG_SHIFT		7
+
+/* Rx Specific Dma descriptor bits */
+#define DMA_RX_CHK_V3PLUS		0x8000
+#define DMA_RX_CHK_V12			0x1000
+#define DMA_RX_BRDCAST			0x0040
+#define DMA_RX_MULT			0x0020
+#define DMA_RX_LG			0x0010
+#define DMA_RX_NO			0x0008
+#define DMA_RX_RXER			0x0004
+#define DMA_RX_CRC_ERROR		0x0002
+#define DMA_RX_OV			0x0001
+#define DMA_RX_FI_MASK			0x001F
+#define DMA_RX_FI_SHIFT			0x0007
+#define DMA_DESC_ALLOC_MASK		0x00FF
+
+#define DMA_ARBITER_RR			0x00
+#define DMA_ARBITER_WRR			0x01
+#define DMA_ARBITER_SP			0x02
+
+struct enet_cb {
+	struct sk_buff      *skb;
+	void __iomem *bd_addr;
+	DEFINE_DMA_UNMAP_ADDR(dma_addr);
+	DEFINE_DMA_UNMAP_LEN(dma_len);
+};
+
+/* power management mode */
+enum bcmgenet_power_mode {
+	GENET_POWER_CABLE_SENSE = 0,
+	GENET_POWER_PASSIVE,
+	GENET_POWER_WOL_MAGIC,
+};
+
+struct bcmgenet_priv;
+
+/* We support both runtime GENET detection and compile-time
+ * to optimize code-paths for a given hardware
+ */
+enum bcmgenet_version {
+	GENET_V1 = 1,
+	GENET_V2,
+	GENET_V3,
+	GENET_V4,
+	GENET_V5
+};
+
+#define GENET_IS_V1(p)	((p)->version == GENET_V1)
+#define GENET_IS_V2(p)	((p)->version == GENET_V2)
+#define GENET_IS_V3(p)	((p)->version == GENET_V3)
+#define GENET_IS_V4(p)	((p)->version == GENET_V4)
+#define GENET_IS_V5(p)	((p)->version == GENET_V5)
+
+/* Hardware flags */
+#define GENET_HAS_40BITS	(1 << 0)
+#define GENET_HAS_EXT		(1 << 1)
+#define GENET_HAS_MDIO_INTR	(1 << 2)
+#define GENET_HAS_MOCA_LINK_DET	(1 << 3)
+
+/* BCMGENET hardware parameters, keep this structure nicely aligned
+ * since it is going to be used in hot paths
+ */
+struct bcmgenet_hw_params {
+	u8		tx_queues;
+	u8		tx_bds_per_q;
+	u8		rx_queues;
+	u8		rx_bds_per_q;
+	u8		bp_in_en_shift;
+	u32		bp_in_mask;
+	u8		hfb_filter_cnt;
+	u8		hfb_filter_size;
+	u8		qtag_mask;
+	u16		tbuf_offset;
+	u32		hfb_offset;
+	u32		hfb_reg_offset;
+	u32		rdma_offset;
+	u32		tdma_offset;
+	u32		words_per_bd;
+	u32		flags;
+};
+
+struct bcmgenet_skb_cb {
+	struct enet_cb *first_cb;	/* First control block of SKB */
+	struct enet_cb *last_cb;	/* Last control block of SKB */
+	unsigned int bytes_sent;	/* bytes on the wire (no TSB) */
+};
+
+#define GENET_CB(skb)	((struct bcmgenet_skb_cb *)((skb)->cb))
+
+struct bcmgenet_tx_ring {
+	spinlock_t	lock;		/* ring lock */
+	struct napi_struct napi;	/* NAPI per tx queue */
+	unsigned long	packets;
+	unsigned long	bytes;
+	unsigned int	index;		/* ring index */
+	unsigned int	queue;		/* queue index */
+	struct enet_cb	*cbs;		/* tx ring buffer control block*/
+	unsigned int	size;		/* size of each tx ring */
+	unsigned int    clean_ptr;      /* Tx ring clean pointer */
+	unsigned int	c_index;	/* last consumer index of each ring*/
+	unsigned int	free_bds;	/* # of free bds for each ring */
+	unsigned int	write_ptr;	/* Tx ring write pointer SW copy */
+	unsigned int	prod_index;	/* Tx ring producer index SW copy */
+	unsigned int	cb_ptr;		/* Tx ring initial CB ptr */
+	unsigned int	end_ptr;	/* Tx ring end CB ptr */
+	void (*int_enable)(struct bcmgenet_tx_ring *);
+	void (*int_disable)(struct bcmgenet_tx_ring *);
+	struct bcmgenet_priv *priv;
+};
+
+struct bcmgenet_net_dim {
+	u16		use_dim;
+	u16		event_ctr;
+	unsigned long	packets;
+	unsigned long	bytes;
+	struct dim	dim;
+};
+
+struct bcmgenet_rx_ring {
+	struct napi_struct napi;	/* Rx NAPI struct */
+	unsigned long	bytes;
+	unsigned long	packets;
+	unsigned long	errors;
+	unsigned long	dropped;
+	unsigned int	index;		/* Rx ring index */
+	struct enet_cb	*cbs;		/* Rx ring buffer control block */
+	unsigned int	size;		/* Rx ring size */
+	unsigned int	c_index;	/* Rx last consumer index */
+	unsigned int	read_ptr;	/* Rx ring read pointer */
+	unsigned int	cb_ptr;		/* Rx ring initial CB ptr */
+	unsigned int	end_ptr;	/* Rx ring end CB ptr */
+	unsigned int	old_discards;
+	struct bcmgenet_net_dim dim;
+	u32		rx_max_coalesced_frames;
+	u32		rx_coalesce_usecs;
+	void (*int_enable)(struct bcmgenet_rx_ring *);
+	void (*int_disable)(struct bcmgenet_rx_ring *);
+	struct bcmgenet_priv *priv;
+};
+
+enum bcmgenet_rxnfc_state {
+	BCMGENET_RXNFC_STATE_UNUSED = 0,
+	BCMGENET_RXNFC_STATE_DISABLED,
+	BCMGENET_RXNFC_STATE_ENABLED
+};
+
+struct bcmgenet_rxnfc_rule {
+	struct	list_head list;
+	struct ethtool_rx_flow_spec	fs;
+	enum bcmgenet_rxnfc_state state;
+};
+
+/* device context */
+struct bcmgenet_priv {
+	void __iomem *base;
+	enum bcmgenet_version version;
+	struct net_device *dev;
+
+	/* transmit variables */
+	void __iomem *tx_bds;
+	struct enet_cb *tx_cbs;
+	unsigned int num_tx_bds;
+
+	struct bcmgenet_tx_ring tx_rings[DESC_INDEX + 1];
+
+	/* receive variables */
+	void __iomem *rx_bds;
+	struct enet_cb *rx_cbs;
+	unsigned int num_rx_bds;
+	unsigned int rx_buf_len;
+	struct bcmgenet_rxnfc_rule rxnfc_rules[MAX_NUM_OF_FS_RULES];
+	struct list_head rxnfc_list;
+
+	struct bcmgenet_rx_ring rx_rings[DESC_INDEX + 1];
+
+	/* other misc variables */
+	struct bcmgenet_hw_params *hw_params;
+	unsigned autoneg_pause:1;
+	unsigned tx_pause:1;
+	unsigned rx_pause:1;
+
+	/* MDIO bus variables */
+	wait_queue_head_t wq;
+	bool internal_phy;
+	struct device_node *phy_dn;
+	struct device_node *mdio_dn;
+	struct mii_bus *mii_bus;
+	u16 gphy_rev;
+	struct clk *clk_eee;
+	bool clk_eee_enabled;
+
+	/* PHY device variables */
+	phy_interface_t phy_interface;
+	int phy_addr;
+	int ext_phy;
+	bool ephy_16nm;
+
+	/* Interrupt variables */
+	struct work_struct bcmgenet_irq_work;
+	int irq0;
+	int irq1;
+	int wol_irq;
+	bool wol_irq_disabled;
+
+	/* shared status */
+	spinlock_t lock;
+	unsigned int irq0_stat;
+
+	/* HW descriptors/checksum variables */
+	bool crc_fwd_en;
+
+	u32 dma_max_burst_length;
+
+	u32 msg_enable;
+
+	struct clk *clk;
+	struct platform_device *pdev;
+	struct platform_device *mii_pdev;
+
+	/* WOL */
+	struct clk *clk_wol;
+	u32 wolopts;
+	u8 sopass[SOPASS_MAX];
+	bool wol_active;
+
+	struct bcmgenet_mib_counters mib;
+
+	struct ethtool_eee eee;
+};
+
+#define GENET_IO_MACRO(name, offset)					\
+static inline u32 bcmgenet_##name##_readl(struct bcmgenet_priv *priv,	\
+					u32 off)			\
+{									\
+	/* MIPS chips strapped for BE will automagically configure the	\
+	 * peripheral registers for CPU-native byte order.		\
+	 */								\
+	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \
+		return __raw_readl(priv->base + offset + off);		\
+	else								\
+		return readl_relaxed(priv->base + offset + off);	\
+}									\
+static inline void bcmgenet_##name##_writel(struct bcmgenet_priv *priv,	\
+					u32 val, u32 off)		\
+{									\
+	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \
+		__raw_writel(val, priv->base + offset + off);		\
+	else								\
+		writel_relaxed(val, priv->base + offset + off);		\
+}
+
+GENET_IO_MACRO(ext, GENET_EXT_OFF);
+GENET_IO_MACRO(umac, GENET_UMAC_OFF);
+GENET_IO_MACRO(sys, GENET_SYS_OFF);
+
+/* interrupt l2 registers accessors */
+GENET_IO_MACRO(intrl2_0, GENET_INTRL2_0_OFF);
+GENET_IO_MACRO(intrl2_1, GENET_INTRL2_1_OFF);
+
+/* HFB register accessors  */
+GENET_IO_MACRO(hfb, priv->hw_params->hfb_offset);
+
+/* GENET v2+ HFB control and filter len helpers */
+GENET_IO_MACRO(hfb_reg, priv->hw_params->hfb_reg_offset);
+
+/* RBUF register accessors */
+GENET_IO_MACRO(rbuf, GENET_RBUF_OFF);
+
+/* MDIO routines */
+int bcmgenet_mii_init(struct net_device *dev);
+int bcmgenet_mii_config(struct net_device *dev, bool init);
+int bcmgenet_mii_probe(struct net_device *dev);
+void bcmgenet_mii_exit(struct net_device *dev);
+void bcmgenet_phy_pause_set(struct net_device *dev, bool rx, bool tx);
+void bcmgenet_phy_power_set(struct net_device *dev, bool enable);
+void bcmgenet_mii_setup(struct net_device *dev);
+
+/* Wake-on-LAN routines */
+void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol);
+int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol);
+int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv,
+				enum bcmgenet_power_mode mode);
+void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv,
+			       enum bcmgenet_power_mode mode);
+
+void bcmgenet_eee_enable_set(struct net_device *dev, bool enable,
+			     bool tx_lpi_enabled);
+
+#endif /* __BCMGENET_H__ */
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
new file mode 100644
index 000000000..f55d9d9c0
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support
+ *
+ * Copyright (c) 2014-2020 Broadcom
+ */
+
+#define pr_fmt(fmt)				"bcmgenet_wol: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <net/arp.h>
+
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/phy.h>
+
+#include "bcmgenet.h"
+
+/* ethtool function - get WOL (Wake on LAN) settings, Only Magic Packet
+ * Detection is supported through ethtool
+ */
+void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device *kdev = &priv->pdev->dev;
+
+	if (!device_can_wakeup(kdev)) {
+		wol->supported = 0;
+		wol->wolopts = 0;
+		return;
+	}
+
+	wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
+	wol->wolopts = priv->wolopts;
+	memset(wol->sopass, 0, sizeof(wol->sopass));
+
+	if (wol->wolopts & WAKE_MAGICSECURE)
+		memcpy(wol->sopass, priv->sopass, sizeof(priv->sopass));
+}
+
+/* ethtool function - set WOL (Wake on LAN) settings.
+ * Only for magic packet detection mode.
+ */
+int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device *kdev = &priv->pdev->dev;
+
+	if (!device_can_wakeup(kdev))
+		return -ENOTSUPP;
+
+	if (wol->wolopts & ~(WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER))
+		return -EINVAL;
+
+	if (wol->wolopts & WAKE_MAGICSECURE)
+		memcpy(priv->sopass, wol->sopass, sizeof(priv->sopass));
+
+	/* Flag the device and relevant IRQ as wakeup capable */
+	if (wol->wolopts) {
+		device_set_wakeup_enable(kdev, 1);
+		/* Avoid unbalanced enable_irq_wake calls */
+		if (priv->wol_irq_disabled)
+			enable_irq_wake(priv->wol_irq);
+		priv->wol_irq_disabled = false;
+	} else {
+		device_set_wakeup_enable(kdev, 0);
+		/* Avoid unbalanced disable_irq_wake calls */
+		if (!priv->wol_irq_disabled)
+			disable_irq_wake(priv->wol_irq);
+		priv->wol_irq_disabled = true;
+	}
+
+	priv->wolopts = wol->wolopts;
+
+	return 0;
+}
+
+static int bcmgenet_poll_wol_status(struct bcmgenet_priv *priv)
+{
+	struct net_device *dev = priv->dev;
+	int retries = 0;
+
+	while (!(bcmgenet_rbuf_readl(priv, RBUF_STATUS)
+		& RBUF_STATUS_WOL)) {
+		retries++;
+		if (retries > 5) {
+			netdev_crit(dev, "polling wol mode timeout\n");
+			return -ETIMEDOUT;
+		}
+		mdelay(1);
+	}
+
+	return retries;
+}
+
+static void bcmgenet_set_mpd_password(struct bcmgenet_priv *priv)
+{
+	bcmgenet_umac_writel(priv, get_unaligned_be16(&priv->sopass[0]),
+			     UMAC_MPD_PW_MS);
+	bcmgenet_umac_writel(priv, get_unaligned_be32(&priv->sopass[2]),
+			     UMAC_MPD_PW_LS);
+}
+
+int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv,
+				enum bcmgenet_power_mode mode)
+{
+	struct net_device *dev = priv->dev;
+	struct bcmgenet_rxnfc_rule *rule;
+	u32 reg, hfb_ctrl_reg, hfb_enable = 0;
+	int retries = 0;
+
+	if (mode != GENET_POWER_WOL_MAGIC) {
+		netif_err(priv, wol, dev, "unsupported mode: %d\n", mode);
+		return -EINVAL;
+	}
+
+	/* Can't suspend with WoL if MAC is still in reset */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	if (reg & CMD_SW_RESET)
+		reg &= ~CMD_SW_RESET;
+
+	/* disable RX */
+	reg &= ~CMD_RX_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+	mdelay(10);
+
+	if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+		reg |= MPD_EN;
+		if (priv->wolopts & WAKE_MAGICSECURE) {
+			bcmgenet_set_mpd_password(priv);
+			reg |= MPD_PW_EN;
+		}
+		bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+	}
+
+	hfb_ctrl_reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL);
+	if (priv->wolopts & WAKE_FILTER) {
+		list_for_each_entry(rule, &priv->rxnfc_list, list)
+			if (rule->fs.ring_cookie == RX_CLS_FLOW_WAKE)
+				hfb_enable |= (1 << rule->fs.location);
+		reg = (hfb_ctrl_reg & ~RBUF_HFB_EN) | RBUF_ACPI_EN;
+		bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL);
+	}
+
+	/* Do not leave UniMAC in MPD mode only */
+	retries = bcmgenet_poll_wol_status(priv);
+	if (retries < 0) {
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+		reg &= ~(MPD_EN | MPD_PW_EN);
+		bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+		bcmgenet_hfb_reg_writel(priv, hfb_ctrl_reg, HFB_CTRL);
+		return retries;
+	}
+
+	netif_dbg(priv, wol, dev, "MPD WOL-ready status set after %d msec\n",
+		  retries);
+
+	clk_prepare_enable(priv->clk_wol);
+	priv->wol_active = 1;
+
+	if (hfb_enable) {
+		bcmgenet_hfb_reg_writel(priv, hfb_enable,
+					HFB_FLT_ENABLE_V3PLUS + 4);
+		hfb_ctrl_reg = RBUF_HFB_EN | RBUF_ACPI_EN;
+		bcmgenet_hfb_reg_writel(priv, hfb_ctrl_reg, HFB_CTRL);
+	}
+
+	/* Enable CRC forward */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	priv->crc_fwd_en = 1;
+	reg |= CMD_CRC_FWD;
+
+	/* Receiver must be enabled for WOL MP detection */
+	reg |= CMD_RX_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+
+	reg = UMAC_IRQ_MPD_R;
+	if (hfb_enable)
+		reg |=  UMAC_IRQ_HFB_SM | UMAC_IRQ_HFB_MM;
+
+	bcmgenet_intrl2_0_writel(priv, reg, INTRL2_CPU_MASK_CLEAR);
+
+	return 0;
+}
+
+void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv,
+			       enum bcmgenet_power_mode mode)
+{
+	u32 reg;
+
+	if (mode != GENET_POWER_WOL_MAGIC) {
+		netif_err(priv, wol, priv->dev, "invalid mode: %d\n", mode);
+		return;
+	}
+
+	if (!priv->wol_active)
+		return;	/* failed to suspend so skip the rest */
+
+	priv->wol_active = 0;
+	clk_disable_unprepare(priv->clk_wol);
+	priv->crc_fwd_en = 0;
+
+	/* Disable Magic Packet Detection */
+	if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+		if (!(reg & MPD_EN))
+			return;	/* already reset so skip the rest */
+		reg &= ~(MPD_EN | MPD_PW_EN);
+		bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+	}
+
+	/* Disable WAKE_FILTER Detection */
+	if (priv->wolopts & WAKE_FILTER) {
+		reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL);
+		if (!(reg & RBUF_ACPI_EN))
+			return;	/* already reset so skip the rest */
+		reg &= ~(RBUF_HFB_EN | RBUF_ACPI_EN);
+		bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL);
+	}
+
+	/* Disable CRC Forward */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	reg &= ~CMD_CRC_FWD;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+}
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
new file mode 100644
index 000000000..1779ee524
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -0,0 +1,670 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Broadcom GENET MDIO routines
+ *
+ * Copyright (c) 2014-2017 Broadcom
+ */
+
+#include <linux/acpi.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/bitops.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+#include <linux/phy_fixed.h>
+#include <linux/brcmphy.h>
+#include <linux/of.h>
+#include <linux/of_net.h>
+#include <linux/of_mdio.h>
+#include <linux/platform_data/bcmgenet.h>
+#include <linux/platform_data/mdio-bcm-unimac.h>
+
+#include "bcmgenet.h"
+
+static void bcmgenet_mac_config(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct phy_device *phydev = dev->phydev;
+	u32 reg, cmd_bits = 0;
+
+	/* speed */
+	if (phydev->speed == SPEED_1000)
+		cmd_bits = CMD_SPEED_1000;
+	else if (phydev->speed == SPEED_100)
+		cmd_bits = CMD_SPEED_100;
+	else
+		cmd_bits = CMD_SPEED_10;
+	cmd_bits <<= CMD_SPEED_SHIFT;
+
+	/* duplex */
+	if (phydev->duplex != DUPLEX_FULL) {
+		cmd_bits |= CMD_HD_EN |
+			CMD_RX_PAUSE_IGNORE | CMD_TX_PAUSE_IGNORE;
+	} else {
+		/* pause capability defaults to Symmetric */
+		if (priv->autoneg_pause) {
+			bool tx_pause = 0, rx_pause = 0;
+
+			if (phydev->autoneg)
+				phy_get_pause(phydev, &tx_pause, &rx_pause);
+
+			if (!tx_pause)
+				cmd_bits |= CMD_TX_PAUSE_IGNORE;
+			if (!rx_pause)
+				cmd_bits |= CMD_RX_PAUSE_IGNORE;
+		}
+
+		/* Manual override */
+		if (!priv->rx_pause)
+			cmd_bits |= CMD_RX_PAUSE_IGNORE;
+		if (!priv->tx_pause)
+			cmd_bits |= CMD_TX_PAUSE_IGNORE;
+	}
+
+	/* Program UMAC and RGMII block based on established
+	 * link speed, duplex, and pause. The speed set in
+	 * umac->cmd tell RGMII block which clock to use for
+	 * transmit -- 25MHz(100Mbps) or 125MHz(1Gbps).
+	 * Receive clock is provided by the PHY.
+	 */
+	reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
+	reg &= ~OOB_DISABLE;
+	reg |= RGMII_LINK;
+	bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
+
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) |
+		       CMD_HD_EN |
+		       CMD_RX_PAUSE_IGNORE | CMD_TX_PAUSE_IGNORE);
+	reg |= cmd_bits;
+	if (reg & CMD_SW_RESET) {
+		reg &= ~CMD_SW_RESET;
+		bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+		udelay(2);
+		reg |= CMD_TX_EN | CMD_RX_EN;
+	}
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+
+	priv->eee.eee_active = phy_init_eee(phydev, 0) >= 0;
+	bcmgenet_eee_enable_set(dev,
+				priv->eee.eee_enabled && priv->eee.eee_active,
+				priv->eee.tx_lpi_enabled);
+}
+
+/* setup netdev link state when PHY link status change and
+ * update UMAC and RGMII block when link up
+ */
+void bcmgenet_mii_setup(struct net_device *dev)
+{
+	struct phy_device *phydev = dev->phydev;
+
+	if (phydev->link)
+		bcmgenet_mac_config(dev);
+	phy_print_status(phydev);
+}
+
+
+static int bcmgenet_fixed_phy_link_update(struct net_device *dev,
+					  struct fixed_phy_status *status)
+{
+	struct bcmgenet_priv *priv;
+	u32 reg;
+
+	if (dev && dev->phydev && status) {
+		priv = netdev_priv(dev);
+		reg = bcmgenet_umac_readl(priv, UMAC_MODE);
+		status->link = !!(reg & MODE_LINK_STATUS);
+	}
+
+	return 0;
+}
+
+void bcmgenet_phy_pause_set(struct net_device *dev, bool rx, bool tx)
+{
+	struct phy_device *phydev = dev->phydev;
+
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->advertising, rx);
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->advertising,
+			 rx | tx);
+	phy_start_aneg(phydev);
+
+	mutex_lock(&phydev->lock);
+	if (phydev->link)
+		bcmgenet_mac_config(dev);
+	mutex_unlock(&phydev->lock);
+}
+
+void bcmgenet_phy_power_set(struct net_device *dev, bool enable)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 reg = 0;
+
+	/* EXT_GPHY_CTRL is only valid for GENETv4 and onward */
+	if (GENET_IS_V4(priv) || priv->ephy_16nm) {
+		reg = bcmgenet_ext_readl(priv, EXT_GPHY_CTRL);
+		if (enable) {
+			reg &= ~EXT_CK25_DIS;
+			bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+			mdelay(1);
+
+			reg &= ~(EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN |
+				 EXT_CFG_IDDQ_GLOBAL_PWR);
+			reg |= EXT_GPHY_RESET;
+			bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+			mdelay(1);
+
+			reg &= ~EXT_GPHY_RESET;
+		} else {
+			reg |= EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN |
+			       EXT_GPHY_RESET | EXT_CFG_IDDQ_GLOBAL_PWR;
+			bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+			mdelay(1);
+			reg |= EXT_CK25_DIS;
+		}
+		bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+		udelay(60);
+	} else {
+		mdelay(1);
+	}
+}
+
+static void bcmgenet_moca_phy_setup(struct bcmgenet_priv *priv)
+{
+	if (priv->hw_params->flags & GENET_HAS_MOCA_LINK_DET)
+		fixed_phy_set_link_update(priv->dev->phydev,
+					  bcmgenet_fixed_phy_link_update);
+}
+
+int bcmgenet_mii_config(struct net_device *dev, bool init)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct phy_device *phydev = dev->phydev;
+	struct device *kdev = &priv->pdev->dev;
+	const char *phy_name = NULL;
+	u32 id_mode_dis = 0;
+	u32 port_ctrl;
+	u32 reg;
+
+	switch (priv->phy_interface) {
+	case PHY_INTERFACE_MODE_INTERNAL:
+		phy_name = "internal PHY";
+		fallthrough;
+	case PHY_INTERFACE_MODE_MOCA:
+		/* Irrespective of the actually configured PHY speed (100 or
+		 * 1000) GENETv4 only has an internal GPHY so we will just end
+		 * up masking the Gigabit features from what we support, not
+		 * switching to the EPHY
+		 */
+		if (GENET_IS_V4(priv))
+			port_ctrl = PORT_MODE_INT_GPHY;
+		else
+			port_ctrl = PORT_MODE_INT_EPHY;
+
+		if (!phy_name) {
+			phy_name = "MoCA";
+			if (!GENET_IS_V5(priv))
+				port_ctrl |= LED_ACT_SOURCE_MAC;
+			bcmgenet_moca_phy_setup(priv);
+		}
+		break;
+
+	case PHY_INTERFACE_MODE_MII:
+		phy_name = "external MII";
+		phy_set_max_speed(phydev, SPEED_100);
+		port_ctrl = PORT_MODE_EXT_EPHY;
+		break;
+
+	case PHY_INTERFACE_MODE_REVMII:
+		phy_name = "external RvMII";
+		/* of_mdiobus_register took care of reading the 'max-speed'
+		 * PHY property for us, effectively limiting the PHY supported
+		 * capabilities, use that knowledge to also configure the
+		 * Reverse MII interface correctly.
+		 */
+		if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+				      dev->phydev->supported))
+			port_ctrl = PORT_MODE_EXT_RVMII_50;
+		else
+			port_ctrl = PORT_MODE_EXT_RVMII_25;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII:
+		/* RGMII_NO_ID: TXC transitions at the same time as TXD
+		 *		(requires PCB or receiver-side delay)
+		 *
+		 * ID is implicitly disabled for 100Mbps (RG)MII operation.
+		 */
+		phy_name = "external RGMII (no delay)";
+		id_mode_dis = BIT(16);
+		port_ctrl = PORT_MODE_EXT_GPHY;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		/* RGMII_TXID:	Add 2ns delay on TXC (90 degree shift) */
+		phy_name = "external RGMII (TX delay)";
+		port_ctrl = PORT_MODE_EXT_GPHY;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+		phy_name = "external RGMII (RX delay)";
+		port_ctrl = PORT_MODE_EXT_GPHY;
+		break;
+	default:
+		dev_err(kdev, "unknown phy mode: %d\n", priv->phy_interface);
+		return -EINVAL;
+	}
+
+	bcmgenet_sys_writel(priv, port_ctrl, SYS_PORT_CTRL);
+
+	priv->ext_phy = !priv->internal_phy &&
+			(priv->phy_interface != PHY_INTERFACE_MODE_MOCA);
+
+	/* This is an external PHY (xMII), so we need to enable the RGMII
+	 * block for the interface to work
+	 */
+	if (priv->ext_phy) {
+		reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
+		reg &= ~ID_MODE_DIS;
+		reg |= id_mode_dis;
+		if (GENET_IS_V1(priv) || GENET_IS_V2(priv) || GENET_IS_V3(priv))
+			reg |= RGMII_MODE_EN_V123;
+		else
+			reg |= RGMII_MODE_EN;
+		bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
+	}
+
+	if (init)
+		dev_info(kdev, "configuring instance for %s\n", phy_name);
+
+	return 0;
+}
+
+int bcmgenet_mii_probe(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device *kdev = &priv->pdev->dev;
+	struct device_node *dn = kdev->of_node;
+	phy_interface_t phy_iface = priv->phy_interface;
+	struct phy_device *phydev;
+	u32 phy_flags = PHY_BRCM_AUTO_PWRDWN_ENABLE |
+			PHY_BRCM_DIS_TXCRXC_NOENRGY |
+			PHY_BRCM_IDDQ_SUSPEND;
+	int ret;
+
+	/* Communicate the integrated PHY revision */
+	if (priv->internal_phy)
+		phy_flags = priv->gphy_rev;
+
+	/* This is an ugly quirk but we have not been correctly interpreting
+	 * the phy_interface values and we have done that across different
+	 * drivers, so at least we are consistent in our mistakes.
+	 *
+	 * When the Generic PHY driver is in use either the PHY has been
+	 * strapped or programmed correctly by the boot loader so we should
+	 * stick to our incorrect interpretation since we have validated it.
+	 *
+	 * Now when a dedicated PHY driver is in use, we need to reverse the
+	 * meaning of the phy_interface_mode values to something that the PHY
+	 * driver will interpret and act on such that we have two mistakes
+	 * canceling themselves so to speak. We only do this for the two
+	 * modes that GENET driver officially supports on Broadcom STB chips:
+	 * PHY_INTERFACE_MODE_RGMII and PHY_INTERFACE_MODE_RGMII_TXID. Other
+	 * modes are not *officially* supported with the boot loader and the
+	 * scripted environment generating Device Tree blobs for those
+	 * platforms.
+	 *
+	 * Note that internal PHY, MoCA and fixed-link configurations are not
+	 * affected because they use different phy_interface_t values or the
+	 * Generic PHY driver.
+	 */
+	switch (priv->phy_interface) {
+	case PHY_INTERFACE_MODE_RGMII:
+		phy_iface = PHY_INTERFACE_MODE_RGMII_ID;
+		break;
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		phy_iface = PHY_INTERFACE_MODE_RGMII_RXID;
+		break;
+	default:
+		break;
+	}
+
+	if (dn) {
+		phydev = of_phy_connect(dev, priv->phy_dn, bcmgenet_mii_setup,
+					phy_flags, phy_iface);
+		if (!phydev) {
+			pr_err("could not attach to PHY\n");
+			return -ENODEV;
+		}
+	} else {
+		if (has_acpi_companion(kdev)) {
+			char mdio_bus_id[MII_BUS_ID_SIZE];
+			struct mii_bus *unimacbus;
+
+			snprintf(mdio_bus_id, MII_BUS_ID_SIZE, "%s-%d",
+				 UNIMAC_MDIO_DRV_NAME, priv->pdev->id);
+
+			unimacbus = mdio_find_bus(mdio_bus_id);
+			if (!unimacbus) {
+				pr_err("Unable to find mii\n");
+				return -ENODEV;
+			}
+			phydev = phy_find_first(unimacbus);
+			put_device(&unimacbus->dev);
+			if (!phydev) {
+				pr_err("Unable to find PHY\n");
+				return -ENODEV;
+			}
+		} else {
+			phydev = dev->phydev;
+		}
+		phydev->dev_flags = phy_flags;
+
+		ret = phy_connect_direct(dev, phydev, bcmgenet_mii_setup,
+					 phy_iface);
+		if (ret) {
+			pr_err("could not attach to PHY\n");
+			return -ENODEV;
+		}
+	}
+
+	/* Configure port multiplexer based on what the probed PHY device since
+	 * reading the 'max-speed' property determines the maximum supported
+	 * PHY speed which is needed for bcmgenet_mii_config() to configure
+	 * things appropriately.
+	 */
+	ret = bcmgenet_mii_config(dev, true);
+	if (ret) {
+		phy_disconnect(dev->phydev);
+		return ret;
+	}
+
+	/* The internal PHY has its link interrupts routed to the
+	 * Ethernet MAC ISRs. On GENETv5 there is a hardware issue
+	 * that prevents the signaling of link UP interrupts when
+	 * the link operates at 10Mbps, so fallback to polling for
+	 * those versions of GENET.
+	 */
+	if (priv->internal_phy && !GENET_IS_V5(priv))
+		dev->phydev->irq = PHY_MAC_INTERRUPT;
+
+	/* Indicate that the MAC is responsible for PHY PM */
+	dev->phydev->mac_managed_pm = true;
+
+	return 0;
+}
+
+static struct device_node *bcmgenet_mii_of_find_mdio(struct bcmgenet_priv *priv)
+{
+	struct device_node *dn = priv->pdev->dev.of_node;
+	struct device *kdev = &priv->pdev->dev;
+	char *compat;
+
+	compat = kasprintf(GFP_KERNEL, "brcm,genet-mdio-v%d", priv->version);
+	if (!compat)
+		return NULL;
+
+	priv->mdio_dn = of_get_compatible_child(dn, compat);
+	kfree(compat);
+	if (!priv->mdio_dn) {
+		dev_err(kdev, "unable to find MDIO bus node\n");
+		return NULL;
+	}
+
+	return priv->mdio_dn;
+}
+
+static void bcmgenet_mii_pdata_init(struct bcmgenet_priv *priv,
+				    struct unimac_mdio_pdata *ppd)
+{
+	struct device *kdev = &priv->pdev->dev;
+	struct bcmgenet_platform_data *pd = kdev->platform_data;
+
+	if (pd->phy_interface != PHY_INTERFACE_MODE_MOCA && pd->mdio_enabled) {
+		/*
+		 * Internal or external PHY with MDIO access
+		 */
+		if (pd->phy_address >= 0 && pd->phy_address < PHY_MAX_ADDR)
+			ppd->phy_mask = 1 << pd->phy_address;
+		else
+			ppd->phy_mask = 0;
+	}
+}
+
+static int bcmgenet_mii_wait(void *wait_func_data)
+{
+	struct bcmgenet_priv *priv = wait_func_data;
+
+	wait_event_timeout(priv->wq,
+			   !(bcmgenet_umac_readl(priv, UMAC_MDIO_CMD)
+			   & MDIO_START_BUSY),
+			   HZ / 100);
+	return 0;
+}
+
+static int bcmgenet_mii_register(struct bcmgenet_priv *priv)
+{
+	struct platform_device *pdev = priv->pdev;
+	struct bcmgenet_platform_data *pdata = pdev->dev.platform_data;
+	struct device_node *dn = pdev->dev.of_node;
+	struct unimac_mdio_pdata ppd;
+	struct platform_device *ppdev;
+	struct resource *pres, res;
+	int id, ret;
+
+	pres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!pres) {
+		dev_err(&pdev->dev, "Invalid resource\n");
+		return -EINVAL;
+	}
+	memset(&res, 0, sizeof(res));
+	memset(&ppd, 0, sizeof(ppd));
+
+	ppd.wait_func = bcmgenet_mii_wait;
+	ppd.wait_func_data = priv;
+	ppd.bus_name = "bcmgenet MII bus";
+
+	/* Unimac MDIO bus controller starts at UniMAC offset + MDIO_CMD
+	 * and is 2 * 32-bits word long, 8 bytes total.
+	 */
+	res.start = pres->start + GENET_UMAC_OFF + UMAC_MDIO_CMD;
+	res.end = res.start + 8;
+	res.flags = IORESOURCE_MEM;
+
+	if (dn)
+		id = of_alias_get_id(dn, "eth");
+	else
+		id = pdev->id;
+
+	ppdev = platform_device_alloc(UNIMAC_MDIO_DRV_NAME, id);
+	if (!ppdev)
+		return -ENOMEM;
+
+	/* Retain this platform_device pointer for later cleanup */
+	priv->mii_pdev = ppdev;
+	ppdev->dev.parent = &pdev->dev;
+	if (dn)
+		ppdev->dev.of_node = bcmgenet_mii_of_find_mdio(priv);
+	else if (pdata)
+		bcmgenet_mii_pdata_init(priv, &ppd);
+	else
+		ppd.phy_mask = ~0;
+
+	ret = platform_device_add_resources(ppdev, &res, 1);
+	if (ret)
+		goto out;
+
+	ret = platform_device_add_data(ppdev, &ppd, sizeof(ppd));
+	if (ret)
+		goto out;
+
+	ret = platform_device_add(ppdev);
+	if (ret)
+		goto out;
+
+	return 0;
+out:
+	platform_device_put(ppdev);
+	return ret;
+}
+
+static int bcmgenet_phy_interface_init(struct bcmgenet_priv *priv)
+{
+	struct device *kdev = &priv->pdev->dev;
+	int phy_mode = device_get_phy_mode(kdev);
+
+	if (phy_mode < 0) {
+		dev_err(kdev, "invalid PHY mode property\n");
+		return phy_mode;
+	}
+
+	priv->phy_interface = phy_mode;
+
+	/* We need to specifically look up whether this PHY interface is
+	 * internal or not *before* we even try to probe the PHY driver
+	 * over MDIO as we may have shut down the internal PHY for power
+	 * saving purposes.
+	 */
+	if (priv->phy_interface == PHY_INTERFACE_MODE_INTERNAL)
+		priv->internal_phy = true;
+
+	return 0;
+}
+
+static int bcmgenet_mii_of_init(struct bcmgenet_priv *priv)
+{
+	struct device_node *dn = priv->pdev->dev.of_node;
+	struct phy_device *phydev;
+	int ret;
+
+	/* Fetch the PHY phandle */
+	priv->phy_dn = of_parse_phandle(dn, "phy-handle", 0);
+
+	/* In the case of a fixed PHY, the DT node associated
+	 * to the PHY is the Ethernet MAC DT node.
+	 */
+	if (!priv->phy_dn && of_phy_is_fixed_link(dn)) {
+		ret = of_phy_register_fixed_link(dn);
+		if (ret)
+			return ret;
+
+		priv->phy_dn = of_node_get(dn);
+	}
+
+	/* Get the link mode */
+	ret = bcmgenet_phy_interface_init(priv);
+	if (ret)
+		return ret;
+
+	/* Make sure we initialize MoCA PHYs with a link down */
+	if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) {
+		phydev = of_phy_find_device(dn);
+		if (phydev) {
+			phydev->link = 0;
+			put_device(&phydev->mdio.dev);
+		}
+	}
+
+	return 0;
+}
+
+static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
+{
+	struct device *kdev = &priv->pdev->dev;
+	struct bcmgenet_platform_data *pd = kdev->platform_data;
+	char phy_name[MII_BUS_ID_SIZE + 3];
+	char mdio_bus_id[MII_BUS_ID_SIZE];
+	struct phy_device *phydev;
+
+	snprintf(mdio_bus_id, MII_BUS_ID_SIZE, "%s-%d",
+		 UNIMAC_MDIO_DRV_NAME, priv->pdev->id);
+
+	if (pd->phy_interface != PHY_INTERFACE_MODE_MOCA && pd->mdio_enabled) {
+		snprintf(phy_name, MII_BUS_ID_SIZE, PHY_ID_FMT,
+			 mdio_bus_id, pd->phy_address);
+
+		/*
+		 * Internal or external PHY with MDIO access
+		 */
+		phydev = phy_attach(priv->dev, phy_name, pd->phy_interface);
+		if (IS_ERR(phydev)) {
+			dev_err(kdev, "failed to register PHY device\n");
+			return PTR_ERR(phydev);
+		}
+	} else {
+		/*
+		 * MoCA port or no MDIO access.
+		 * Use fixed PHY to represent the link layer.
+		 */
+		struct fixed_phy_status fphy_status = {
+			.link = 1,
+			.speed = pd->phy_speed,
+			.duplex = pd->phy_duplex,
+			.pause = 0,
+			.asym_pause = 0,
+		};
+
+		phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
+		if (IS_ERR(phydev)) {
+			dev_err(kdev, "failed to register fixed PHY device\n");
+			return -ENODEV;
+		}
+
+		/* Make sure we initialize MoCA PHYs with a link down */
+		phydev->link = 0;
+
+	}
+
+	priv->phy_interface = pd->phy_interface;
+
+	return 0;
+}
+
+static int bcmgenet_mii_bus_init(struct bcmgenet_priv *priv)
+{
+	struct device *kdev = &priv->pdev->dev;
+	struct device_node *dn = kdev->of_node;
+
+	if (dn)
+		return bcmgenet_mii_of_init(priv);
+	else if (has_acpi_companion(kdev))
+		return bcmgenet_phy_interface_init(priv);
+	else
+		return bcmgenet_mii_pd_init(priv);
+}
+
+int bcmgenet_mii_init(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	int ret;
+
+	ret = bcmgenet_mii_register(priv);
+	if (ret)
+		return ret;
+
+	ret = bcmgenet_mii_bus_init(priv);
+	if (ret)
+		goto out;
+
+	return 0;
+
+out:
+	bcmgenet_mii_exit(dev);
+	return ret;
+}
+
+void bcmgenet_mii_exit(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device_node *dn = priv->pdev->dev.of_node;
+
+	if (of_phy_is_fixed_link(dn))
+		of_phy_deregister_fixed_link(dn);
+	of_node_put(priv->phy_dn);
+	clk_prepare_enable(priv->clk);
+	platform_device_unregister(priv->mii_pdev);
+	clk_disable_unprepare(priv->clk);
+}