diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c
deleted file mode 100644
index 58579baf3f7a..000000000000
--- a/drivers/net/ethernet/micrel/ks8851_mll.c
+++ /dev/null
@@ -1,1345 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/**
- * drivers/net/ethernet/micrel/ks8851_mll.c
- * Copyright (c) 2009 Micrel Inc.
- */
-
-/* Supports:
- * KS8851 16bit MLL chip from Micrel Inc.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/cache.h>
-#include <linux/crc32.h>
-#include <linux/crc32poly.h>
-#include <linux/mii.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/ks8851_mll.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_net.h>
-
-#include "ks8851.h"
-
-#define	DRV_NAME	"ks8851_mll"
-
-static u8 KS_DEFAULT_MAC_ADDRESS[] = { 0x00, 0x10, 0xA1, 0x86, 0x95, 0x11 };
-#define MAX_RECV_FRAMES			255
-#define MAX_BUF_SIZE			2048
-#define TX_BUF_SIZE			2000
-#define RX_BUF_SIZE			2000
-
-#define RXCR1_FILTER_MASK    		(RXCR1_RXINVF | RXCR1_RXAE | \
-					 RXCR1_RXMAFMA | RXCR1_RXPAFMA)
-#define RXQCR_CMD_CNTL                	(RXQCR_RXFCTE|RXQCR_ADRFE)
-
-#define	ENUM_BUS_NONE			0
-#define	ENUM_BUS_8BIT			1
-#define	ENUM_BUS_16BIT			2
-#define	ENUM_BUS_32BIT			3
-
-#define MAX_MCAST_LST			32
-#define HW_MCAST_SIZE			8
-
-/**
- * union ks_tx_hdr - tx header data
- * @txb: The header as bytes
- * @txw: The header as 16bit, little-endian words
- *
- * A dual representation of the tx header data to allow
- * access to individual bytes, and to allow 16bit accesses
- * with 16bit alignment.
- */
-union ks_tx_hdr {
-	u8      txb[4];
-	__le16  txw[2];
-};
-
-/**
- * struct ks_net - KS8851 driver private data
- * @net_device 	: The network device we're bound to
- * @hw_addr	: start address of data register.
- * @hw_addr_cmd	: start address of command register.
- * @txh    	: temporaly buffer to save status/length.
- * @lock	: Lock to ensure that the device is not accessed when busy.
- * @pdev	: Pointer to platform device.
- * @mii		: The MII state information for the mii calls.
- * @frame_head_info   	: frame header information for multi-pkt rx.
- * @statelock	: Lock on this structure for tx list.
- * @msg_enable	: The message flags controlling driver output (see ethtool).
- * @frame_cnt  	: number of frames received.
- * @bus_width  	: i/o bus width.
- * @rc_rxqcr	: Cached copy of KS_RXQCR.
- * @rc_txcr	: Cached copy of KS_TXCR.
- * @rc_ier	: Cached copy of KS_IER.
- * @sharedbus  	: Multipex(addr and data bus) mode indicator.
- * @cmd_reg_cache	: command register cached.
- * @cmd_reg_cache_int	: command register cached. Used in the irq handler.
- * @promiscuous	: promiscuous mode indicator.
- * @all_mcast  	: mutlicast indicator.
- * @mcast_lst_size   	: size of multicast list.
- * @mcast_lst    	: multicast list.
- * @mcast_bits    	: multicast enabed.
- * @mac_addr   		: MAC address assigned to this device.
- * @fid    		: frame id.
- * @extra_byte    	: number of extra byte prepended rx pkt.
- * @enabled    		: indicator this device works.
- *
- * The @lock ensures that the chip is protected when certain operations are
- * in progress. When the read or write packet transfer is in progress, most
- * of the chip registers are not accessible until the transfer is finished and
- * the DMA has been de-asserted.
- *
- * The @statelock is used to protect information in the structure which may
- * need to be accessed via several sources, such as the network driver layer
- * or one of the work queues.
- *
- */
-
-/* Receive multiplex framer header info */
-struct type_frame_head {
-	u16	sts;         /* Frame status */
-	u16	len;         /* Byte count */
-};
-
-struct ks_net {
-	struct net_device	*netdev;
-	void __iomem    	*hw_addr;
-	void __iomem    	*hw_addr_cmd;
-	union ks_tx_hdr		txh ____cacheline_aligned;
-	struct mutex      	lock; /* spinlock to be interrupt safe */
-	struct platform_device *pdev;
-	struct mii_if_info	mii;
-	struct type_frame_head	*frame_head_info;
-	spinlock_t		statelock;
-	u32			msg_enable;
-	u32			frame_cnt;
-	int			bus_width;
-
-	u16			rc_rxqcr;
-	u16			rc_txcr;
-	u16			rc_ier;
-	u16			sharedbus;
-	u16			cmd_reg_cache;
-	u16			cmd_reg_cache_int;
-	u16			promiscuous;
-	u16			all_mcast;
-	u16			mcast_lst_size;
-	u8			mcast_lst[MAX_MCAST_LST][ETH_ALEN];
-	u8			mcast_bits[HW_MCAST_SIZE];
-	u8			mac_addr[6];
-	u8                      fid;
-	u8			extra_byte;
-	u8			enabled;
-};
-
-static int msg_enable;
-
-#define BE3             0x8000      /* Byte Enable 3 */
-#define BE2             0x4000      /* Byte Enable 2 */
-#define BE1             0x2000      /* Byte Enable 1 */
-#define BE0             0x1000      /* Byte Enable 0 */
-
-/* register read/write calls.
- *
- * All these calls issue transactions to access the chip's registers. They
- * all require that the necessary lock is held to prevent accesses when the
- * chip is busy transferring packet data (RX/TX FIFO accesses).
- */
-
-/**
- * ks_rdreg16 - read 16 bit register from device
- * @ks	  : The chip information
- * @offset: The register address
- *
- * Read a 16bit register from the chip, returning the result
- */
-
-static u16 ks_rdreg16(struct ks_net *ks, int offset)
-{
-	ks->cmd_reg_cache = (u16)offset | ((BE3 | BE2) >> (offset & 0x02));
-	iowrite16(ks->cmd_reg_cache, ks->hw_addr_cmd);
-	return ioread16(ks->hw_addr);
-}
-
-/**
- * ks_wrreg16 - write 16bit register value to chip
- * @ks: The chip information
- * @offset: The register address
- * @value: The value to write
- *
- */
-
-static void ks_wrreg16(struct ks_net *ks, int offset, u16 value)
-{
-	ks->cmd_reg_cache = (u16)offset | ((BE3 | BE2) >> (offset & 0x02));
-	iowrite16(ks->cmd_reg_cache, ks->hw_addr_cmd);
-	iowrite16(value, ks->hw_addr);
-}
-
-/**
- * ks_inblk - read a block of data from QMU. This is called after sudo DMA mode enabled.
- * @ks: The chip state
- * @wptr: buffer address to save data
- * @len: length in byte to read
- *
- */
-static inline void ks_inblk(struct ks_net *ks, u16 *wptr, u32 len)
-{
-	len >>= 1;
-	while (len--)
-		*wptr++ = be16_to_cpu(ioread16(ks->hw_addr));
-}
-
-/**
- * ks_outblk - write data to QMU. This is called after sudo DMA mode enabled.
- * @ks: The chip information
- * @wptr: buffer address
- * @len: length in byte to write
- *
- */
-static inline void ks_outblk(struct ks_net *ks, u16 *wptr, u32 len)
-{
-	len >>= 1;
-	while (len--)
-		iowrite16(cpu_to_be16(*wptr++), ks->hw_addr);
-}
-
-static void ks_disable_int(struct ks_net *ks)
-{
-	ks_wrreg16(ks, KS_IER, 0x0000);
-}  /* ks_disable_int */
-
-static void ks_enable_int(struct ks_net *ks)
-{
-	ks_wrreg16(ks, KS_IER, ks->rc_ier);
-}  /* ks_enable_int */
-
-/**
- * ks_tx_fifo_space - return the available hardware buffer size.
- * @ks: The chip information
- *
- */
-static inline u16 ks_tx_fifo_space(struct ks_net *ks)
-{
-	return ks_rdreg16(ks, KS_TXMIR) & 0x1fff;
-}
-
-/**
- * ks_save_cmd_reg - save the command register from the cache.
- * @ks: The chip information
- *
- */
-static inline void ks_save_cmd_reg(struct ks_net *ks)
-{
-	/*ks8851 MLL has a bug to read back the command register.
-	* So rely on software to save the content of command register.
-	*/
-	ks->cmd_reg_cache_int = ks->cmd_reg_cache;
-}
-
-/**
- * ks_restore_cmd_reg - restore the command register from the cache and
- * 	write to hardware register.
- * @ks: The chip information
- *
- */
-static inline void ks_restore_cmd_reg(struct ks_net *ks)
-{
-	ks->cmd_reg_cache = ks->cmd_reg_cache_int;
-	iowrite16(ks->cmd_reg_cache, ks->hw_addr_cmd);
-}
-
-/**
- * ks_set_powermode - set power mode of the device
- * @ks: The chip information
- * @pwrmode: The power mode value to write to KS_PMECR.
- *
- * Change the power mode of the chip.
- */
-static void ks_set_powermode(struct ks_net *ks, unsigned pwrmode)
-{
-	unsigned pmecr;
-
-	netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);
-
-	ks_rdreg16(ks, KS_GRR);
-	pmecr = ks_rdreg16(ks, KS_PMECR);
-	pmecr &= ~PMECR_PM_MASK;
-	pmecr |= pwrmode;
-
-	ks_wrreg16(ks, KS_PMECR, pmecr);
-}
-
-/**
- * ks_read_config - read chip configuration of bus width.
- * @ks: The chip information
- *
- */
-static void ks_read_config(struct ks_net *ks)
-{
-	u16 reg_data = 0;
-
-	/* Regardless of bus width, 8 bit read should always work.*/
-	reg_data = ks_rdreg16(ks, KS_CCR);
-
-	/* addr/data bus are multiplexed */
-	ks->sharedbus = (reg_data & CCR_SHARED) == CCR_SHARED;
-
-	/* There are garbage data when reading data from QMU,
-	depending on bus-width.
-	*/
-
-	if (reg_data & CCR_8BIT) {
-		ks->bus_width = ENUM_BUS_8BIT;
-		ks->extra_byte = 1;
-	} else if (reg_data & CCR_16BIT) {
-		ks->bus_width = ENUM_BUS_16BIT;
-		ks->extra_byte = 2;
-	} else {
-		ks->bus_width = ENUM_BUS_32BIT;
-		ks->extra_byte = 4;
-	}
-}
-
-/**
- * ks_soft_reset - issue one of the soft reset to the device
- * @ks: The device state.
- * @op: The bit(s) to set in the GRR
- *
- * Issue the relevant soft-reset command to the device's GRR register
- * specified by @op.
- *
- * Note, the delays are in there as a caution to ensure that the reset
- * has time to take effect and then complete. Since the datasheet does
- * not currently specify the exact sequence, we have chosen something
- * that seems to work with our device.
- */
-static void ks_soft_reset(struct ks_net *ks, unsigned op)
-{
-	/* Disable interrupt first */
-	ks_wrreg16(ks, KS_IER, 0x0000);
-	ks_wrreg16(ks, KS_GRR, op);
-	mdelay(10);	/* wait a short time to effect reset */
-	ks_wrreg16(ks, KS_GRR, 0);
-	mdelay(1);	/* wait for condition to clear */
-}
-
-
-static void ks_enable_qmu(struct ks_net *ks)
-{
-	u16 w;
-
-	w = ks_rdreg16(ks, KS_TXCR);
-	/* Enables QMU Transmit (TXCR). */
-	ks_wrreg16(ks, KS_TXCR, w | TXCR_TXE);
-
-	/*
-	 * RX Frame Count Threshold Enable and Auto-Dequeue RXQ Frame
-	 * Enable
-	 */
-
-	w = ks_rdreg16(ks, KS_RXQCR);
-	ks_wrreg16(ks, KS_RXQCR, w | RXQCR_RXFCTE);
-
-	/* Enables QMU Receive (RXCR1). */
-	w = ks_rdreg16(ks, KS_RXCR1);
-	ks_wrreg16(ks, KS_RXCR1, w | RXCR1_RXE);
-	ks->enabled = true;
-}  /* ks_enable_qmu */
-
-static void ks_disable_qmu(struct ks_net *ks)
-{
-	u16	w;
-
-	w = ks_rdreg16(ks, KS_TXCR);
-
-	/* Disables QMU Transmit (TXCR). */
-	w  &= ~TXCR_TXE;
-	ks_wrreg16(ks, KS_TXCR, w);
-
-	/* Disables QMU Receive (RXCR1). */
-	w = ks_rdreg16(ks, KS_RXCR1);
-	w &= ~RXCR1_RXE ;
-	ks_wrreg16(ks, KS_RXCR1, w);
-
-	ks->enabled = false;
-
-}  /* ks_disable_qmu */
-
-/**
- * ks_read_qmu - read 1 pkt data from the QMU.
- * @ks: The chip information
- * @buf: buffer address to save 1 pkt
- * @len: Pkt length
- * Here is the sequence to read 1 pkt:
- *	1. set sudo DMA mode
- *	2. read prepend data
- *	3. read pkt data
- *	4. reset sudo DMA Mode
- */
-static inline void ks_read_qmu(struct ks_net *ks, u16 *buf, u32 len)
-{
-	u32 r =  ks->extra_byte & 0x1 ;
-	u32 w = ks->extra_byte - r;
-
-	/* 1. set sudo DMA mode */
-	ks_wrreg16(ks, KS_RXFDPR, RXFDPR_RXFPAI);
-	ks_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
-
-	/* 2. read prepend data */
-	/**
-	 * read 4 + extra bytes and discard them.
-	 * extra bytes for dummy, 2 for status, 2 for len
-	 */
-
-	/* use likely(r) for 8 bit access for performance */
-	if (unlikely(r))
-		ioread8(ks->hw_addr);
-	ks_inblk(ks, buf, w + 2 + 2);
-
-	/* 3. read pkt data */
-	ks_inblk(ks, buf, ALIGN(len, 4));
-
-	/* 4. reset sudo DMA Mode */
-	ks_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-}
-
-/**
- * ks_rcv - read multiple pkts data from the QMU.
- * @ks: The chip information
- * @netdev: The network device being opened.
- *
- * Read all of header information before reading pkt content.
- * It is not allowed only port of pkts in QMU after issuing
- * interrupt ack.
- */
-static void ks_rcv(struct ks_net *ks, struct net_device *netdev)
-{
-	u32	i;
-	struct type_frame_head *frame_hdr = ks->frame_head_info;
-	struct sk_buff *skb;
-
-	ks->frame_cnt = ks_rdreg16(ks, KS_RXFCTR) >> 8;
-
-	/* read all header information */
-	for (i = 0; i < ks->frame_cnt; i++) {
-		/* Checking Received packet status */
-		frame_hdr->sts = ks_rdreg16(ks, KS_RXFHSR);
-		/* Get packet len from hardware */
-		frame_hdr->len = ks_rdreg16(ks, KS_RXFHBCR);
-		frame_hdr++;
-	}
-
-	frame_hdr = ks->frame_head_info;
-	while (ks->frame_cnt--) {
-		if (unlikely(!(frame_hdr->sts & RXFSHR_RXFV) ||
-			     frame_hdr->len >= RX_BUF_SIZE ||
-			     frame_hdr->len <= 0)) {
-
-			/* discard an invalid packet */
-			ks_wrreg16(ks, KS_RXQCR, (ks->rc_rxqcr | RXQCR_RRXEF));
-			netdev->stats.rx_dropped++;
-			if (!(frame_hdr->sts & RXFSHR_RXFV))
-				netdev->stats.rx_frame_errors++;
-			else
-				netdev->stats.rx_length_errors++;
-			frame_hdr++;
-			continue;
-		}
-
-		skb = netdev_alloc_skb(netdev, frame_hdr->len + 16);
-		if (likely(skb)) {
-			skb_reserve(skb, 2);
-			/* read data block including CRC 4 bytes */
-			ks_read_qmu(ks, (u16 *)skb->data, frame_hdr->len);
-			skb_put(skb, frame_hdr->len - 4);
-			skb->protocol = eth_type_trans(skb, netdev);
-			netif_rx(skb);
-			/* exclude CRC size */
-			netdev->stats.rx_bytes += frame_hdr->len - 4;
-			netdev->stats.rx_packets++;
-		} else {
-			ks_wrreg16(ks, KS_RXQCR, (ks->rc_rxqcr | RXQCR_RRXEF));
-			netdev->stats.rx_dropped++;
-		}
-		frame_hdr++;
-	}
-}
-
-/**
- * ks_update_link_status - link status update.
- * @netdev: The network device being opened.
- * @ks: The chip information
- *
- */
-
-static void ks_update_link_status(struct net_device *netdev, struct ks_net *ks)
-{
-	/* check the status of the link */
-	u32 link_up_status;
-	if (ks_rdreg16(ks, KS_P1SR) & P1SR_LINK_GOOD) {
-		netif_carrier_on(netdev);
-		link_up_status = true;
-	} else {
-		netif_carrier_off(netdev);
-		link_up_status = false;
-	}
-	netif_dbg(ks, link, ks->netdev,
-		  "%s: %s\n", __func__, link_up_status ? "UP" : "DOWN");
-}
-
-/**
- * ks_irq - device interrupt handler
- * @irq: Interrupt number passed from the IRQ handler.
- * @pw: The private word passed to register_irq(), our struct ks_net.
- *
- * This is the handler invoked to find out what happened
- *
- * Read the interrupt status, work out what needs to be done and then clear
- * any of the interrupts that are not needed.
- */
-
-static irqreturn_t ks_irq(int irq, void *pw)
-{
-	struct net_device *netdev = pw;
-	struct ks_net *ks = netdev_priv(netdev);
-	unsigned long flags;
-	u16 status;
-
-	spin_lock_irqsave(&ks->statelock, flags);
-	/*this should be the first in IRQ handler */
-	ks_save_cmd_reg(ks);
-
-	status = ks_rdreg16(ks, KS_ISR);
-	if (unlikely(!status)) {
-		ks_restore_cmd_reg(ks);
-		spin_unlock_irqrestore(&ks->statelock, flags);
-		return IRQ_NONE;
-	}
-
-	ks_wrreg16(ks, KS_ISR, status);
-
-	if (likely(status & IRQ_RXI))
-		ks_rcv(ks, netdev);
-
-	if (unlikely(status & IRQ_LCI))
-		ks_update_link_status(netdev, ks);
-
-	if (unlikely(status & IRQ_TXI))
-		netif_wake_queue(netdev);
-
-	if (unlikely(status & IRQ_LDI)) {
-
-		u16 pmecr = ks_rdreg16(ks, KS_PMECR);
-		pmecr &= ~PMECR_WKEVT_MASK;
-		ks_wrreg16(ks, KS_PMECR, pmecr | PMECR_WKEVT_LINK);
-	}
-
-	if (unlikely(status & IRQ_RXOI))
-		ks->netdev->stats.rx_over_errors++;
-	/* this should be the last in IRQ handler*/
-	ks_restore_cmd_reg(ks);
-	spin_unlock_irqrestore(&ks->statelock, flags);
-	return IRQ_HANDLED;
-}
-
-
-/**
- * ks_net_open - open network device
- * @netdev: The network device being opened.
- *
- * Called when the network device is marked active, such as a user executing
- * 'ifconfig up' on the device.
- */
-static int ks_net_open(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	int err;
-
-#define	KS_INT_FLAGS	IRQF_TRIGGER_LOW
-	/* lock the card, even if we may not actually do anything
-	 * else at the moment.
-	 */
-
-	netif_dbg(ks, ifup, ks->netdev, "%s - entry\n", __func__);
-
-	/* reset the HW */
-	err = request_irq(netdev->irq, ks_irq, KS_INT_FLAGS, DRV_NAME, netdev);
-
-	if (err) {
-		pr_err("Failed to request IRQ: %d: %d\n", netdev->irq, err);
-		return err;
-	}
-
-	/* wake up powermode to normal mode */
-	ks_set_powermode(ks, PMECR_PM_NORMAL);
-	mdelay(1);	/* wait for normal mode to take effect */
-
-	ks_wrreg16(ks, KS_ISR, 0xffff);
-	ks_enable_int(ks);
-	ks_enable_qmu(ks);
-	netif_start_queue(ks->netdev);
-
-	netif_dbg(ks, ifup, ks->netdev, "network device up\n");
-
-	return 0;
-}
-
-/**
- * ks_net_stop - close network device
- * @netdev: The device being closed.
- *
- * Called to close down a network device which has been active. Cancell any
- * work, shutdown the RX and TX process and then place the chip into a low
- * power state whilst it is not being used.
- */
-static int ks_net_stop(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-
-	netif_info(ks, ifdown, netdev, "shutting down\n");
-
-	netif_stop_queue(netdev);
-
-	mutex_lock(&ks->lock);
-
-	/* turn off the IRQs and ack any outstanding */
-	ks_wrreg16(ks, KS_IER, 0x0000);
-	ks_wrreg16(ks, KS_ISR, 0xffff);
-
-	/* shutdown RX/TX QMU */
-	ks_disable_qmu(ks);
-	ks_disable_int(ks);
-
-	/* set powermode to soft power down to save power */
-	ks_set_powermode(ks, PMECR_PM_SOFTDOWN);
-	free_irq(netdev->irq, netdev);
-	mutex_unlock(&ks->lock);
-	return 0;
-}
-
-
-/**
- * ks_write_qmu - write 1 pkt data to the QMU.
- * @ks: The chip information
- * @pdata: buffer address to save 1 pkt
- * @len: Pkt length in byte
- * Here is the sequence to write 1 pkt:
- *	1. set sudo DMA mode
- *	2. write status/length
- *	3. write pkt data
- *	4. reset sudo DMA Mode
- *	5. reset sudo DMA mode
- *	6. Wait until pkt is out
- */
-static void ks_write_qmu(struct ks_net *ks, u8 *pdata, u16 len)
-{
-	/* start header at txb[0] to align txw entries */
-	ks->txh.txw[0] = 0;
-	ks->txh.txw[1] = cpu_to_le16(len);
-
-	/* 1. set sudo-DMA mode */
-	ks_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
-	/* 2. write status/lenth info */
-	ks_outblk(ks, ks->txh.txw, 4);
-	/* 3. write pkt data */
-	ks_outblk(ks, (u16 *)pdata, ALIGN(len, 4));
-	/* 4. reset sudo-DMA mode */
-	ks_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-	/* 5. Enqueue Tx(move the pkt from TX buffer into TXQ) */
-	ks_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
-	/* 6. wait until TXQCR_METFE is auto-cleared */
-	while (ks_rdreg16(ks, KS_TXQCR) & TXQCR_METFE)
-		;
-}
-
-/**
- * ks_start_xmit - transmit packet
- * @skb		: The buffer to transmit
- * @netdev	: The device used to transmit the packet.
- *
- * Called by the network layer to transmit the @skb.
- * spin_lock_irqsave is required because tx and rx should be mutual exclusive.
- * So while tx is in-progress, prevent IRQ interrupt from happenning.
- */
-static netdev_tx_t ks_start_xmit(struct sk_buff *skb, struct net_device *netdev)
-{
-	netdev_tx_t retv = NETDEV_TX_OK;
-	struct ks_net *ks = netdev_priv(netdev);
-	unsigned long flags;
-
-	spin_lock_irqsave(&ks->statelock, flags);
-
-	/* Extra space are required:
-	*  4 byte for alignment, 4 for status/length, 4 for CRC
-	*/
-
-	if (likely(ks_tx_fifo_space(ks) >= skb->len + 12)) {
-		ks_write_qmu(ks, skb->data, skb->len);
-		/* add tx statistics */
-		netdev->stats.tx_bytes += skb->len;
-		netdev->stats.tx_packets++;
-		dev_kfree_skb(skb);
-	} else
-		retv = NETDEV_TX_BUSY;
-	spin_unlock_irqrestore(&ks->statelock, flags);
-	return retv;
-}
-
-/**
- * ks_start_rx - ready to serve pkts
- * @ks		: The chip information
- *
- */
-static void ks_start_rx(struct ks_net *ks)
-{
-	u16 cntl;
-
-	/* Enables QMU Receive (RXCR1). */
-	cntl = ks_rdreg16(ks, KS_RXCR1);
-	cntl |= RXCR1_RXE ;
-	ks_wrreg16(ks, KS_RXCR1, cntl);
-}  /* ks_start_rx */
-
-/**
- * ks_stop_rx - stop to serve pkts
- * @ks		: The chip information
- *
- */
-static void ks_stop_rx(struct ks_net *ks)
-{
-	u16 cntl;
-
-	/* Disables QMU Receive (RXCR1). */
-	cntl = ks_rdreg16(ks, KS_RXCR1);
-	cntl &= ~RXCR1_RXE ;
-	ks_wrreg16(ks, KS_RXCR1, cntl);
-
-}  /* ks_stop_rx */
-
-static unsigned long const ethernet_polynomial = CRC32_POLY_BE;
-
-static unsigned long ether_gen_crc(int length, u8 *data)
-{
-	long crc = -1;
-	while (--length >= 0) {
-		u8 current_octet = *data++;
-		int bit;
-
-		for (bit = 0; bit < 8; bit++, current_octet >>= 1) {
-			crc = (crc << 1) ^
-				((crc < 0) ^ (current_octet & 1) ?
-			ethernet_polynomial : 0);
-		}
-	}
-	return (unsigned long)crc;
-}  /* ether_gen_crc */
-
-/**
-* ks_set_grpaddr - set multicast information
-* @ks : The chip information
-*/
-
-static void ks_set_grpaddr(struct ks_net *ks)
-{
-	u8	i;
-	u32	index, position, value;
-
-	memset(ks->mcast_bits, 0, sizeof(u8) * HW_MCAST_SIZE);
-
-	for (i = 0; i < ks->mcast_lst_size; i++) {
-		position = (ether_gen_crc(6, ks->mcast_lst[i]) >> 26) & 0x3f;
-		index = position >> 3;
-		value = 1 << (position & 7);
-		ks->mcast_bits[index] |= (u8)value;
-	}
-
-	for (i  = 0; i < HW_MCAST_SIZE; i++) {
-		if (i & 1) {
-			ks_wrreg16(ks, (u16)((KS_MAHTR0 + i) & ~1),
-				(ks->mcast_bits[i] << 8) |
-				ks->mcast_bits[i - 1]);
-		}
-	}
-}  /* ks_set_grpaddr */
-
-/**
-* ks_clear_mcast - clear multicast information
-*
-* @ks : The chip information
-* This routine removes all mcast addresses set in the hardware.
-*/
-
-static void ks_clear_mcast(struct ks_net *ks)
-{
-	u16	i, mcast_size;
-	for (i = 0; i < HW_MCAST_SIZE; i++)
-		ks->mcast_bits[i] = 0;
-
-	mcast_size = HW_MCAST_SIZE >> 2;
-	for (i = 0; i < mcast_size; i++)
-		ks_wrreg16(ks, KS_MAHTR0 + (2*i), 0);
-}
-
-static void ks_set_promis(struct ks_net *ks, u16 promiscuous_mode)
-{
-	u16		cntl;
-	ks->promiscuous = promiscuous_mode;
-	ks_stop_rx(ks);  /* Stop receiving for reconfiguration */
-	cntl = ks_rdreg16(ks, KS_RXCR1);
-
-	cntl &= ~RXCR1_FILTER_MASK;
-	if (promiscuous_mode)
-		/* Enable Promiscuous mode */
-		cntl |= RXCR1_RXAE | RXCR1_RXINVF;
-	else
-		/* Disable Promiscuous mode (default normal mode) */
-		cntl |= RXCR1_RXPAFMA;
-
-	ks_wrreg16(ks, KS_RXCR1, cntl);
-
-	if (ks->enabled)
-		ks_start_rx(ks);
-
-}  /* ks_set_promis */
-
-static void ks_set_mcast(struct ks_net *ks, u16 mcast)
-{
-	u16	cntl;
-
-	ks->all_mcast = mcast;
-	ks_stop_rx(ks);  /* Stop receiving for reconfiguration */
-	cntl = ks_rdreg16(ks, KS_RXCR1);
-	cntl &= ~RXCR1_FILTER_MASK;
-	if (mcast)
-		/* Enable "Perfect with Multicast address passed mode" */
-		cntl |= (RXCR1_RXAE | RXCR1_RXMAFMA | RXCR1_RXPAFMA);
-	else
-		/**
-		 * Disable "Perfect with Multicast address passed
-		 * mode" (normal mode).
-		 */
-		cntl |= RXCR1_RXPAFMA;
-
-	ks_wrreg16(ks, KS_RXCR1, cntl);
-
-	if (ks->enabled)
-		ks_start_rx(ks);
-}  /* ks_set_mcast */
-
-static void ks_set_rx_mode(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	struct netdev_hw_addr *ha;
-
-	/* Turn on/off promiscuous mode. */
-	if ((netdev->flags & IFF_PROMISC) == IFF_PROMISC)
-		ks_set_promis(ks,
-			(u16)((netdev->flags & IFF_PROMISC) == IFF_PROMISC));
-	/* Turn on/off all mcast mode. */
-	else if ((netdev->flags & IFF_ALLMULTI) == IFF_ALLMULTI)
-		ks_set_mcast(ks,
-			(u16)((netdev->flags & IFF_ALLMULTI) == IFF_ALLMULTI));
-	else
-		ks_set_promis(ks, false);
-
-	if ((netdev->flags & IFF_MULTICAST) && netdev_mc_count(netdev)) {
-		if (netdev_mc_count(netdev) <= MAX_MCAST_LST) {
-			int i = 0;
-
-			netdev_for_each_mc_addr(ha, netdev) {
-				if (i >= MAX_MCAST_LST)
-					break;
-				memcpy(ks->mcast_lst[i++], ha->addr, ETH_ALEN);
-			}
-			ks->mcast_lst_size = (u8)i;
-			ks_set_grpaddr(ks);
-		} else {
-			/**
-			 * List too big to support so
-			 * turn on all mcast mode.
-			 */
-			ks->mcast_lst_size = MAX_MCAST_LST;
-			ks_set_mcast(ks, true);
-		}
-	} else {
-		ks->mcast_lst_size = 0;
-		ks_clear_mcast(ks);
-	}
-} /* ks_set_rx_mode */
-
-static void ks_set_mac(struct ks_net *ks, u8 *data)
-{
-	u16 *pw = (u16 *)data;
-	u16 w, u;
-
-	ks_stop_rx(ks);  /* Stop receiving for reconfiguration */
-
-	u = *pw++;
-	w = ((u & 0xFF) << 8) | ((u >> 8) & 0xFF);
-	ks_wrreg16(ks, KS_MARH, w);
-
-	u = *pw++;
-	w = ((u & 0xFF) << 8) | ((u >> 8) & 0xFF);
-	ks_wrreg16(ks, KS_MARM, w);
-
-	u = *pw;
-	w = ((u & 0xFF) << 8) | ((u >> 8) & 0xFF);
-	ks_wrreg16(ks, KS_MARL, w);
-
-	memcpy(ks->mac_addr, data, ETH_ALEN);
-
-	if (ks->enabled)
-		ks_start_rx(ks);
-}
-
-static int ks_set_mac_address(struct net_device *netdev, void *paddr)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	struct sockaddr *addr = paddr;
-	u8 *da;
-
-	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
-
-	da = (u8 *)netdev->dev_addr;
-
-	ks_set_mac(ks, da);
-	return 0;
-}
-
-static int ks_net_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-
-	if (!netif_running(netdev))
-		return -EINVAL;
-
-	return generic_mii_ioctl(&ks->mii, if_mii(req), cmd, NULL);
-}
-
-static const struct net_device_ops ks_netdev_ops = {
-	.ndo_open		= ks_net_open,
-	.ndo_stop		= ks_net_stop,
-	.ndo_do_ioctl		= ks_net_ioctl,
-	.ndo_start_xmit		= ks_start_xmit,
-	.ndo_set_mac_address	= ks_set_mac_address,
-	.ndo_set_rx_mode	= ks_set_rx_mode,
-	.ndo_validate_addr	= eth_validate_addr,
-};
-
-/* ethtool support */
-
-static void ks_get_drvinfo(struct net_device *netdev,
-			       struct ethtool_drvinfo *di)
-{
-	strlcpy(di->driver, DRV_NAME, sizeof(di->driver));
-	strlcpy(di->version, "1.00", sizeof(di->version));
-	strlcpy(di->bus_info, dev_name(netdev->dev.parent),
-		sizeof(di->bus_info));
-}
-
-static u32 ks_get_msglevel(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	return ks->msg_enable;
-}
-
-static void ks_set_msglevel(struct net_device *netdev, u32 to)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	ks->msg_enable = to;
-}
-
-static int ks_get_link_ksettings(struct net_device *netdev,
-				 struct ethtool_link_ksettings *cmd)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-
-	mii_ethtool_get_link_ksettings(&ks->mii, cmd);
-
-	return 0;
-}
-
-static int ks_set_link_ksettings(struct net_device *netdev,
-				 const struct ethtool_link_ksettings *cmd)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	return mii_ethtool_set_link_ksettings(&ks->mii, cmd);
-}
-
-static u32 ks_get_link(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	return mii_link_ok(&ks->mii);
-}
-
-static int ks_nway_reset(struct net_device *netdev)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	return mii_nway_restart(&ks->mii);
-}
-
-static const struct ethtool_ops ks_ethtool_ops = {
-	.get_drvinfo	= ks_get_drvinfo,
-	.get_msglevel	= ks_get_msglevel,
-	.set_msglevel	= ks_set_msglevel,
-	.get_link	= ks_get_link,
-	.nway_reset	= ks_nway_reset,
-	.get_link_ksettings = ks_get_link_ksettings,
-	.set_link_ksettings = ks_set_link_ksettings,
-};
-
-/* MII interface controls */
-
-/**
- * ks_phy_reg - convert MII register into a KS8851 register
- * @reg: MII register number.
- *
- * Return the KS8851 register number for the corresponding MII PHY register
- * if possible. Return zero if the MII register has no direct mapping to the
- * KS8851 register set.
- */
-static int ks_phy_reg(int reg)
-{
-	switch (reg) {
-	case MII_BMCR:
-		return KS_P1MBCR;
-	case MII_BMSR:
-		return KS_P1MBSR;
-	case MII_PHYSID1:
-		return KS_PHY1ILR;
-	case MII_PHYSID2:
-		return KS_PHY1IHR;
-	case MII_ADVERTISE:
-		return KS_P1ANAR;
-	case MII_LPA:
-		return KS_P1ANLPR;
-	}
-
-	return 0x0;
-}
-
-/**
- * ks_phy_read - MII interface PHY register read.
- * @netdev: The network device the PHY is on.
- * @phy_addr: Address of PHY (ignored as we only have one)
- * @reg: The register to read.
- *
- * This call reads data from the PHY register specified in @reg. Since the
- * device does not support all the MII registers, the non-existent values
- * are always returned as zero.
- *
- * We return zero for unsupported registers as the MII code does not check
- * the value returned for any error status, and simply returns it to the
- * caller. The mii-tool that the driver was tested with takes any -ve error
- * as real PHY capabilities, thus displaying incorrect data to the user.
- */
-static int ks_phy_read(struct net_device *netdev, int phy_addr, int reg)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	int ksreg;
-	int result;
-
-	ksreg = ks_phy_reg(reg);
-	if (!ksreg)
-		return 0x0;	/* no error return allowed, so use zero */
-
-	mutex_lock(&ks->lock);
-	result = ks_rdreg16(ks, ksreg);
-	mutex_unlock(&ks->lock);
-
-	return result;
-}
-
-static void ks_phy_write(struct net_device *netdev,
-			     int phy, int reg, int value)
-{
-	struct ks_net *ks = netdev_priv(netdev);
-	int ksreg;
-
-	ksreg = ks_phy_reg(reg);
-	if (ksreg) {
-		mutex_lock(&ks->lock);
-		ks_wrreg16(ks, ksreg, value);
-		mutex_unlock(&ks->lock);
-	}
-}
-
-/**
- * ks_read_selftest - read the selftest memory info.
- * @ks: The device state
- *
- * Read and check the TX/RX memory selftest information.
- */
-static int ks_read_selftest(struct ks_net *ks)
-{
-	unsigned both_done = MBIR_TXMBF | MBIR_RXMBF;
-	int ret = 0;
-	unsigned rd;
-
-	rd = ks_rdreg16(ks, KS_MBIR);
-
-	if ((rd & both_done) != both_done) {
-		netdev_warn(ks->netdev, "Memory selftest not finished\n");
-		return 0;
-	}
-
-	if (rd & MBIR_TXMBFA) {
-		netdev_err(ks->netdev, "TX memory selftest fails\n");
-		ret |= 1;
-	}
-
-	if (rd & MBIR_RXMBFA) {
-		netdev_err(ks->netdev, "RX memory selftest fails\n");
-		ret |= 2;
-	}
-
-	netdev_info(ks->netdev, "the selftest passes\n");
-	return ret;
-}
-
-static void ks_setup(struct ks_net *ks)
-{
-	u16	w;
-
-	/**
-	 * Configure QMU Transmit
-	 */
-
-	/* Setup Transmit Frame Data Pointer Auto-Increment (TXFDPR) */
-	ks_wrreg16(ks, KS_TXFDPR, TXFDPR_TXFPAI);
-
-	/* Setup Receive Frame Data Pointer Auto-Increment */
-	ks_wrreg16(ks, KS_RXFDPR, RXFDPR_RXFPAI);
-
-	/* Setup Receive Frame Threshold - 1 frame (RXFCTFC) */
-	ks_wrreg16(ks, KS_RXFCTR, 1 & RXFCTR_RXFCT_MASK);
-
-	/* Setup RxQ Command Control (RXQCR) */
-	ks->rc_rxqcr = RXQCR_CMD_CNTL;
-	ks_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-
-	/**
-	 * set the force mode to half duplex, default is full duplex
-	 *  because if the auto-negotiation fails, most switch uses
-	 *  half-duplex.
-	 */
-
-	w = ks_rdreg16(ks, KS_P1MBCR);
-	w &= ~BMCR_FULLDPLX;
-	ks_wrreg16(ks, KS_P1MBCR, w);
-
-	w = TXCR_TXFCE | TXCR_TXPE | TXCR_TXCRC | TXCR_TCGIP;
-	ks_wrreg16(ks, KS_TXCR, w);
-
-	w = RXCR1_RXFCE | RXCR1_RXBE | RXCR1_RXUE | RXCR1_RXME | RXCR1_RXIPFCC;
-
-	if (ks->promiscuous)         /* bPromiscuous */
-		w |= (RXCR1_RXAE | RXCR1_RXINVF);
-	else if (ks->all_mcast) /* Multicast address passed mode */
-		w |= (RXCR1_RXAE | RXCR1_RXMAFMA | RXCR1_RXPAFMA);
-	else                                   /* Normal mode */
-		w |= RXCR1_RXPAFMA;
-
-	ks_wrreg16(ks, KS_RXCR1, w);
-}  /*ks_setup */
-
-
-static void ks_setup_int(struct ks_net *ks)
-{
-	ks->rc_ier = 0x00;
-	/* Clear the interrupts status of the hardware. */
-	ks_wrreg16(ks, KS_ISR, 0xffff);
-
-	/* Enables the interrupts of the hardware. */
-	ks->rc_ier = (IRQ_LCI | IRQ_TXI | IRQ_RXI);
-}  /* ks_setup_int */
-
-static int ks_hw_init(struct ks_net *ks)
-{
-#define	MHEADER_SIZE	(sizeof(struct type_frame_head) * MAX_RECV_FRAMES)
-	ks->promiscuous = 0;
-	ks->all_mcast = 0;
-	ks->mcast_lst_size = 0;
-
-	ks->frame_head_info = devm_kmalloc(&ks->pdev->dev, MHEADER_SIZE,
-					   GFP_KERNEL);
-	if (!ks->frame_head_info)
-		return false;
-
-	ks_set_mac(ks, KS_DEFAULT_MAC_ADDRESS);
-	return true;
-}
-
-#if defined(CONFIG_OF)
-static const struct of_device_id ks8851_ml_dt_ids[] = {
-	{ .compatible = "micrel,ks8851-mll" },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, ks8851_ml_dt_ids);
-#endif
-
-static int ks8851_probe(struct platform_device *pdev)
-{
-	int err;
-	struct net_device *netdev;
-	struct ks_net *ks;
-	u16 id, data;
-	const char *mac;
-
-	netdev = alloc_etherdev(sizeof(struct ks_net));
-	if (!netdev)
-		return -ENOMEM;
-
-	SET_NETDEV_DEV(netdev, &pdev->dev);
-
-	ks = netdev_priv(netdev);
-	ks->netdev = netdev;
-
-	ks->hw_addr = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(ks->hw_addr)) {
-		err = PTR_ERR(ks->hw_addr);
-		goto err_free;
-	}
-
-	ks->hw_addr_cmd = devm_platform_ioremap_resource(pdev, 1);
-	if (IS_ERR(ks->hw_addr_cmd)) {
-		err = PTR_ERR(ks->hw_addr_cmd);
-		goto err_free;
-	}
-
-	netdev->irq = platform_get_irq(pdev, 0);
-
-	if ((int)netdev->irq < 0) {
-		err = netdev->irq;
-		goto err_free;
-	}
-
-	ks->pdev = pdev;
-
-	mutex_init(&ks->lock);
-	spin_lock_init(&ks->statelock);
-
-	netdev->netdev_ops = &ks_netdev_ops;
-	netdev->ethtool_ops = &ks_ethtool_ops;
-
-	/* setup mii state */
-	ks->mii.dev             = netdev;
-	ks->mii.phy_id          = 1,
-	ks->mii.phy_id_mask     = 1;
-	ks->mii.reg_num_mask    = 0xf;
-	ks->mii.mdio_read       = ks_phy_read;
-	ks->mii.mdio_write      = ks_phy_write;
-
-	netdev_info(netdev, "message enable is %d\n", msg_enable);
-	/* set the default message enable */
-	ks->msg_enable = netif_msg_init(msg_enable, (NETIF_MSG_DRV |
-						     NETIF_MSG_PROBE |
-						     NETIF_MSG_LINK));
-	ks_read_config(ks);
-
-	/* simple check for a valid chip being connected to the bus */
-	if ((ks_rdreg16(ks, KS_CIDER) & ~CIDER_REV_MASK) != CIDER_ID) {
-		netdev_err(netdev, "failed to read device ID\n");
-		err = -ENODEV;
-		goto err_free;
-	}
-
-	if (ks_read_selftest(ks)) {
-		netdev_err(netdev, "failed to read device ID\n");
-		err = -ENODEV;
-		goto err_free;
-	}
-
-	err = register_netdev(netdev);
-	if (err)
-		goto err_free;
-
-	platform_set_drvdata(pdev, netdev);
-
-	ks_soft_reset(ks, GRR_GSR);
-	ks_hw_init(ks);
-	ks_disable_qmu(ks);
-	ks_setup(ks);
-	ks_setup_int(ks);
-
-	data = ks_rdreg16(ks, KS_OBCR);
-	ks_wrreg16(ks, KS_OBCR, data | OBCR_ODS_16mA);
-
-	/* overwriting the default MAC address */
-	if (pdev->dev.of_node) {
-		mac = of_get_mac_address(pdev->dev.of_node);
-		if (!IS_ERR(mac))
-			ether_addr_copy(ks->mac_addr, mac);
-	} else {
-		struct ks8851_mll_platform_data *pdata;
-
-		pdata = dev_get_platdata(&pdev->dev);
-		if (!pdata) {
-			netdev_err(netdev, "No platform data\n");
-			err = -ENODEV;
-			goto err_pdata;
-		}
-		memcpy(ks->mac_addr, pdata->mac_addr, ETH_ALEN);
-	}
-	if (!is_valid_ether_addr(ks->mac_addr)) {
-		/* Use random MAC address if none passed */
-		eth_random_addr(ks->mac_addr);
-		netdev_info(netdev, "Using random mac address\n");
-	}
-	netdev_info(netdev, "Mac address is: %pM\n", ks->mac_addr);
-
-	memcpy(netdev->dev_addr, ks->mac_addr, ETH_ALEN);
-
-	ks_set_mac(ks, netdev->dev_addr);
-
-	id = ks_rdreg16(ks, KS_CIDER);
-
-	netdev_info(netdev, "Found chip, family: 0x%x, id: 0x%x, rev: 0x%x\n",
-		    (id >> 8) & 0xff, (id >> 4) & 0xf, (id >> 1) & 0x7);
-	return 0;
-
-err_pdata:
-	unregister_netdev(netdev);
-err_free:
-	free_netdev(netdev);
-	return err;
-}
-
-static int ks8851_remove(struct platform_device *pdev)
-{
-	struct net_device *netdev = platform_get_drvdata(pdev);
-
-	unregister_netdev(netdev);
-	free_netdev(netdev);
-	return 0;
-
-}
-
-static struct platform_driver ks8851_platform_driver = {
-	.driver = {
-		.name = DRV_NAME,
-		.of_match_table	= of_match_ptr(ks8851_ml_dt_ids),
-	},
-	.probe = ks8851_probe,
-	.remove = ks8851_remove,
-};
-
-module_platform_driver(ks8851_platform_driver);
-
-MODULE_DESCRIPTION("KS8851 MLL Network driver");
-MODULE_AUTHOR("David Choi <david.choi@micrel.com>");
-MODULE_LICENSE("GPL");
-module_param_named(message, msg_enable, int, 0);
-MODULE_PARM_DESC(message, "Message verbosity level (0=none, 31=all)");
-
