ks8*/ksz8*: Move the Micrel drivers

Move the Micrel drivers into drivers/net/ethernet/micrel/ and
make the necessary Kconfig and Makefile changes.

CC: Ben Dooks <ben@simtec.co.uk>
CC: Tristram Ha <Tristram.Ha@micrel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1737 deletions

diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c
deleted file mode 100644
index f56743a28fc..00000000000
--- a/drivers/net/ks8851.c
+++ /dev/null
@@ -1,1737 +0,0 @@
-/* drivers/net/ks8851.c
- *
- * Copyright 2009 Simtec Electronics
- *	http://www.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define DEBUG
-
-#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/mii.h>
-
-#include <linux/spi/spi.h>
-
-#include "ks8851.h"
-
-/**
- * struct ks8851_rxctrl - KS8851 driver rx control
- * @mchash: Multicast hash-table data.
- * @rxcr1: KS_RXCR1 register setting
- * @rxcr2: KS_RXCR2 register setting
- *
- * Representation of the settings needs to control the receive filtering
- * such as the multicast hash-filter and the receive register settings. This
- * is used to make the job of working out if the receive settings change and
- * then issuing the new settings to the worker that will send the necessary
- * commands.
- */
-struct ks8851_rxctrl {
-	u16	mchash[4];
-	u16	rxcr1;
-	u16	rxcr2;
-};
-
-/**
- * union ks8851_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 ks8851_tx_hdr {
-	u8	txb[6];
-	__le16	txw[3];
-};
-
-/**
- * struct ks8851_net - KS8851 driver private data
- * @netdev: The network device we're bound to
- * @spidev: The spi device we're bound to.
- * @lock: Lock to ensure that the device is not accessed when busy.
- * @statelock: Lock on this structure for tx list.
- * @mii: The MII state information for the mii calls.
- * @rxctrl: RX settings for @rxctrl_work.
- * @tx_work: Work queue for tx packets
- * @irq_work: Work queue for servicing interrupts
- * @rxctrl_work: Work queue for updating RX mode and multicast lists
- * @txq: Queue of packets for transmission.
- * @spi_msg1: pre-setup SPI transfer with one message, @spi_xfer1.
- * @spi_msg2: pre-setup SPI transfer with two messages, @spi_xfer2.
- * @txh: Space for generating packet TX header in DMA-able data
- * @rxd: Space for receiving SPI data, in DMA-able space.
- * @txd: Space for transmitting SPI data, in DMA-able space.
- * @msg_enable: The message flags controlling driver output (see ethtool).
- * @fid: Incrementing frame id tag.
- * @rc_ier: Cached copy of KS_IER.
- * @rc_ccr: Cached copy of KS_CCR.
- * @rc_rxqcr: Cached copy of KS_RXQCR.
- * @eeprom_size: Companion eeprom size in Bytes, 0 if no eeprom
- *
- * 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 ccessible 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.
- *
- * We align the buffers we may use for rx/tx to ensure that if the SPI driver
- * wants to DMA map them, it will not have any problems with data the driver
- * modifies.
- */
-struct ks8851_net {
-	struct net_device	*netdev;
-	struct spi_device	*spidev;
-	struct mutex		lock;
-	spinlock_t		statelock;
-
-	union ks8851_tx_hdr	txh ____cacheline_aligned;
-	u8			rxd[8];
-	u8			txd[8];
-
-	u32			msg_enable ____cacheline_aligned;
-	u16			tx_space;
-	u8			fid;
-
-	u16			rc_ier;
-	u16			rc_rxqcr;
-	u16			rc_ccr;
-	u16			eeprom_size;
-
-	struct mii_if_info	mii;
-	struct ks8851_rxctrl	rxctrl;
-
-	struct work_struct	tx_work;
-	struct work_struct	irq_work;
-	struct work_struct	rxctrl_work;
-
-	struct sk_buff_head	txq;
-
-	struct spi_message	spi_msg1;
-	struct spi_message	spi_msg2;
-	struct spi_transfer	spi_xfer1;
-	struct spi_transfer	spi_xfer2[2];
-};
-
-static int msg_enable;
-
-/* shift for byte-enable data */
-#define BYTE_EN(_x)	((_x) << 2)
-
-/* turn register number and byte-enable mask into data for start of packet */
-#define MK_OP(_byteen, _reg) (BYTE_EN(_byteen) | (_reg)  << (8+2) | (_reg) >> 6)
-
-/* SPI register read/write calls.
- *
- * All these calls issue SPI 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).
- */
-
-/**
- * ks8851_wrreg16 - write 16bit register value to chip
- * @ks: The chip state
- * @reg: The register address
- * @val: The value to write
- *
- * Issue a write to put the value @val into the register specified in @reg.
- */
-static void ks8851_wrreg16(struct ks8851_net *ks, unsigned reg, unsigned val)
-{
-	struct spi_transfer *xfer = &ks->spi_xfer1;
-	struct spi_message *msg = &ks->spi_msg1;
-	__le16 txb[2];
-	int ret;
-
-	txb[0] = cpu_to_le16(MK_OP(reg & 2 ? 0xC : 0x03, reg) | KS_SPIOP_WR);
-	txb[1] = cpu_to_le16(val);
-
-	xfer->tx_buf = txb;
-	xfer->rx_buf = NULL;
-	xfer->len = 4;
-
-	ret = spi_sync(ks->spidev, msg);
-	if (ret < 0)
-		netdev_err(ks->netdev, "spi_sync() failed\n");
-}
-
-/**
- * ks8851_wrreg8 - write 8bit register value to chip
- * @ks: The chip state
- * @reg: The register address
- * @val: The value to write
- *
- * Issue a write to put the value @val into the register specified in @reg.
- */
-static void ks8851_wrreg8(struct ks8851_net *ks, unsigned reg, unsigned val)
-{
-	struct spi_transfer *xfer = &ks->spi_xfer1;
-	struct spi_message *msg = &ks->spi_msg1;
-	__le16 txb[2];
-	int ret;
-	int bit;
-
-	bit = 1 << (reg & 3);
-
-	txb[0] = cpu_to_le16(MK_OP(bit, reg) | KS_SPIOP_WR);
-	txb[1] = val;
-
-	xfer->tx_buf = txb;
-	xfer->rx_buf = NULL;
-	xfer->len = 3;
-
-	ret = spi_sync(ks->spidev, msg);
-	if (ret < 0)
-		netdev_err(ks->netdev, "spi_sync() failed\n");
-}
-
-/**
- * ks8851_rx_1msg - select whether to use one or two messages for spi read
- * @ks: The device structure
- *
- * Return whether to generate a single message with a tx and rx buffer
- * supplied to spi_sync(), or alternatively send the tx and rx buffers
- * as separate messages.
- *
- * Depending on the hardware in use, a single message may be more efficient
- * on interrupts or work done by the driver.
- *
- * This currently always returns true until we add some per-device data passed
- * from the platform code to specify which mode is better.
- */
-static inline bool ks8851_rx_1msg(struct ks8851_net *ks)
-{
-	return true;
-}
-
-/**
- * ks8851_rdreg - issue read register command and return the data
- * @ks: The device state
- * @op: The register address and byte enables in message format.
- * @rxb: The RX buffer to return the result into
- * @rxl: The length of data expected.
- *
- * This is the low level read call that issues the necessary spi message(s)
- * to read data from the register specified in @op.
- */
-static void ks8851_rdreg(struct ks8851_net *ks, unsigned op,
-			 u8 *rxb, unsigned rxl)
-{
-	struct spi_transfer *xfer;
-	struct spi_message *msg;
-	__le16 *txb = (__le16 *)ks->txd;
-	u8 *trx = ks->rxd;
-	int ret;
-
-	txb[0] = cpu_to_le16(op | KS_SPIOP_RD);
-
-	if (ks8851_rx_1msg(ks)) {
-		msg = &ks->spi_msg1;
-		xfer = &ks->spi_xfer1;
-
-		xfer->tx_buf = txb;
-		xfer->rx_buf = trx;
-		xfer->len = rxl + 2;
-	} else {
-		msg = &ks->spi_msg2;
-		xfer = ks->spi_xfer2;
-
-		xfer->tx_buf = txb;
-		xfer->rx_buf = NULL;
-		xfer->len = 2;
-
-		xfer++;
-		xfer->tx_buf = NULL;
-		xfer->rx_buf = trx;
-		xfer->len = rxl;
-	}
-
-	ret = spi_sync(ks->spidev, msg);
-	if (ret < 0)
-		netdev_err(ks->netdev, "read: spi_sync() failed\n");
-	else if (ks8851_rx_1msg(ks))
-		memcpy(rxb, trx + 2, rxl);
-	else
-		memcpy(rxb, trx, rxl);
-}
-
-/**
- * ks8851_rdreg8 - read 8 bit register from device
- * @ks: The chip information
- * @reg: The register address
- *
- * Read a 8bit register from the chip, returning the result
-*/
-static unsigned ks8851_rdreg8(struct ks8851_net *ks, unsigned reg)
-{
-	u8 rxb[1];
-
-	ks8851_rdreg(ks, MK_OP(1 << (reg & 3), reg), rxb, 1);
-	return rxb[0];
-}
-
-/**
- * ks8851_rdreg16 - read 16 bit register from device
- * @ks: The chip information
- * @reg: The register address
- *
- * Read a 16bit register from the chip, returning the result
-*/
-static unsigned ks8851_rdreg16(struct ks8851_net *ks, unsigned reg)
-{
-	__le16 rx = 0;
-
-	ks8851_rdreg(ks, MK_OP(reg & 2 ? 0xC : 0x3, reg), (u8 *)&rx, 2);
-	return le16_to_cpu(rx);
-}
-
-/**
- * ks8851_rdreg32 - read 32 bit register from device
- * @ks: The chip information
- * @reg: The register address
- *
- * Read a 32bit register from the chip.
- *
- * Note, this read requires the address be aligned to 4 bytes.
-*/
-static unsigned ks8851_rdreg32(struct ks8851_net *ks, unsigned reg)
-{
-	__le32 rx = 0;
-
-	WARN_ON(reg & 3);
-
-	ks8851_rdreg(ks, MK_OP(0xf, reg), (u8 *)&rx, 4);
-	return le32_to_cpu(rx);
-}
-
-/**
- * ks8851_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 ks8851_soft_reset(struct ks8851_net *ks, unsigned op)
-{
-	ks8851_wrreg16(ks, KS_GRR, op);
-	mdelay(1);	/* wait a short time to effect reset */
-	ks8851_wrreg16(ks, KS_GRR, 0);
-	mdelay(1);	/* wait for condition to clear */
-}
-
-/**
- * ks8851_write_mac_addr - write mac address to device registers
- * @dev: The network device
- *
- * Update the KS8851 MAC address registers from the address in @dev.
- *
- * This call assumes that the chip is not running, so there is no need to
- * shutdown the RXQ process whilst setting this.
-*/
-static int ks8851_write_mac_addr(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	int i;
-
-	mutex_lock(&ks->lock);
-
-	for (i = 0; i < ETH_ALEN; i++)
-		ks8851_wrreg8(ks, KS_MAR(i), dev->dev_addr[i]);
-
-	mutex_unlock(&ks->lock);
-
-	return 0;
-}
-
-/**
- * ks8851_init_mac - initialise the mac address
- * @ks: The device structure
- *
- * Get or create the initial mac address for the device and then set that
- * into the station address register. Currently we assume that the device
- * does not have a valid mac address in it, and so we use random_ether_addr()
- * to create a new one.
- *
- * In future, the driver should check to see if the device has an EEPROM
- * attached and whether that has a valid ethernet address in it.
- */
-static void ks8851_init_mac(struct ks8851_net *ks)
-{
-	struct net_device *dev = ks->netdev;
-
-	random_ether_addr(dev->dev_addr);
-	ks8851_write_mac_addr(dev);
-}
-
-/**
- * ks8851_irq - device interrupt handler
- * @irq: Interrupt number passed from the IRQ hnalder.
- * @pw: The private word passed to register_irq(), our struct ks8851_net.
- *
- * Disable the interrupt from happening again until we've processed the
- * current status by scheduling ks8851_irq_work().
- */
-static irqreturn_t ks8851_irq(int irq, void *pw)
-{
-	struct ks8851_net *ks = pw;
-
-	disable_irq_nosync(irq);
-	schedule_work(&ks->irq_work);
-	return IRQ_HANDLED;
-}
-
-/**
- * ks8851_rdfifo - read data from the receive fifo
- * @ks: The device state.
- * @buff: The buffer address
- * @len: The length of the data to read
- *
- * Issue an RXQ FIFO read command and read the @len amount of data from
- * the FIFO into the buffer specified by @buff.
- */
-static void ks8851_rdfifo(struct ks8851_net *ks, u8 *buff, unsigned len)
-{
-	struct spi_transfer *xfer = ks->spi_xfer2;
-	struct spi_message *msg = &ks->spi_msg2;
-	u8 txb[1];
-	int ret;
-
-	netif_dbg(ks, rx_status, ks->netdev,
-		  "%s: %d@%p\n", __func__, len, buff);
-
-	/* set the operation we're issuing */
-	txb[0] = KS_SPIOP_RXFIFO;
-
-	xfer->tx_buf = txb;
-	xfer->rx_buf = NULL;
-	xfer->len = 1;
-
-	xfer++;
-	xfer->rx_buf = buff;
-	xfer->tx_buf = NULL;
-	xfer->len = len;
-
-	ret = spi_sync(ks->spidev, msg);
-	if (ret < 0)
-		netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
-}
-
-/**
- * ks8851_dbg_dumpkkt - dump initial packet contents to debug
- * @ks: The device state
- * @rxpkt: The data for the received packet
- *
- * Dump the initial data from the packet to dev_dbg().
-*/
-static void ks8851_dbg_dumpkkt(struct ks8851_net *ks, u8 *rxpkt)
-{
-	netdev_dbg(ks->netdev,
-		   "pkt %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
-		   rxpkt[4], rxpkt[5], rxpkt[6], rxpkt[7],
-		   rxpkt[8], rxpkt[9], rxpkt[10], rxpkt[11],
-		   rxpkt[12], rxpkt[13], rxpkt[14], rxpkt[15]);
-}
-
-/**
- * ks8851_rx_pkts - receive packets from the host
- * @ks: The device information.
- *
- * This is called from the IRQ work queue when the system detects that there
- * are packets in the receive queue. Find out how many packets there are and
- * read them from the FIFO.
- */
-static void ks8851_rx_pkts(struct ks8851_net *ks)
-{
-	struct sk_buff *skb;
-	unsigned rxfc;
-	unsigned rxlen;
-	unsigned rxstat;
-	u32 rxh;
-	u8 *rxpkt;
-
-	rxfc = ks8851_rdreg8(ks, KS_RXFC);
-
-	netif_dbg(ks, rx_status, ks->netdev,
-		  "%s: %d packets\n", __func__, rxfc);
-
-	/* Currently we're issuing a read per packet, but we could possibly
-	 * improve the code by issuing a single read, getting the receive
-	 * header, allocating the packet and then reading the packet data
-	 * out in one go.
-	 *
-	 * This form of operation would require us to hold the SPI bus'
-	 * chipselect low during the entie transaction to avoid any
-	 * reset to the data stream coming from the chip.
-	 */
-
-	for (; rxfc != 0; rxfc--) {
-		rxh = ks8851_rdreg32(ks, KS_RXFHSR);
-		rxstat = rxh & 0xffff;
-		rxlen = rxh >> 16;
-
-		netif_dbg(ks, rx_status, ks->netdev,
-			  "rx: stat 0x%04x, len 0x%04x\n", rxstat, rxlen);
-
-		/* the length of the packet includes the 32bit CRC */
-
-		/* set dma read address */
-		ks8851_wrreg16(ks, KS_RXFDPR, RXFDPR_RXFPAI | 0x00);
-
-		/* start the packet dma process, and set auto-dequeue rx */
-		ks8851_wrreg16(ks, KS_RXQCR,
-			       ks->rc_rxqcr | RXQCR_SDA | RXQCR_ADRFE);
-
-		if (rxlen > 4) {
-			unsigned int rxalign;
-
-			rxlen -= 4;
-			rxalign = ALIGN(rxlen, 4);
-			skb = netdev_alloc_skb_ip_align(ks->netdev, rxalign);
-			if (skb) {
-
-				/* 4 bytes of status header + 4 bytes of
-				 * garbage: we put them before ethernet
-				 * header, so that they are copied,
-				 * but ignored.
-				 */
-
-				rxpkt = skb_put(skb, rxlen) - 8;
-
-				ks8851_rdfifo(ks, rxpkt, rxalign + 8);
-
-				if (netif_msg_pktdata(ks))
-					ks8851_dbg_dumpkkt(ks, rxpkt);
-
-				skb->protocol = eth_type_trans(skb, ks->netdev);
-				netif_rx(skb);
-
-				ks->netdev->stats.rx_packets++;
-				ks->netdev->stats.rx_bytes += rxlen;
-			}
-		}
-
-		ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-	}
-}
-
-/**
- * ks8851_irq_work - work queue handler for dealing with interrupt requests
- * @work: The work structure that was scheduled by schedule_work()
- *
- * This is the handler invoked when the ks8851_irq() is called to find out
- * what happened, as we cannot allow ourselves to sleep whilst waiting for
- * anything other process has the chip's lock.
- *
- * Read the interrupt status, work out what needs to be done and then clear
- * any of the interrupts that are not needed.
- */
-static void ks8851_irq_work(struct work_struct *work)
-{
-	struct ks8851_net *ks = container_of(work, struct ks8851_net, irq_work);
-	unsigned status;
-	unsigned handled = 0;
-
-	mutex_lock(&ks->lock);
-
-	status = ks8851_rdreg16(ks, KS_ISR);
-
-	netif_dbg(ks, intr, ks->netdev,
-		  "%s: status 0x%04x\n", __func__, status);
-
-	if (status & IRQ_LCI) {
-		/* should do something about checking link status */
-		handled |= IRQ_LCI;
-	}
-
-	if (status & IRQ_LDI) {
-		u16 pmecr = ks8851_rdreg16(ks, KS_PMECR);
-		pmecr &= ~PMECR_WKEVT_MASK;
-		ks8851_wrreg16(ks, KS_PMECR, pmecr | PMECR_WKEVT_LINK);
-
-		handled |= IRQ_LDI;
-	}
-
-	if (status & IRQ_RXPSI)
-		handled |= IRQ_RXPSI;
-
-	if (status & IRQ_TXI) {
-		handled |= IRQ_TXI;
-
-		/* no lock here, tx queue should have been stopped */
-
-		/* update our idea of how much tx space is available to the
-		 * system */
-		ks->tx_space = ks8851_rdreg16(ks, KS_TXMIR);
-
-		netif_dbg(ks, intr, ks->netdev,
-			  "%s: txspace %d\n", __func__, ks->tx_space);
-	}
-
-	if (status & IRQ_RXI)
-		handled |= IRQ_RXI;
-
-	if (status & IRQ_SPIBEI) {
-		dev_err(&ks->spidev->dev, "%s: spi bus error\n", __func__);
-		handled |= IRQ_SPIBEI;
-	}
-
-	ks8851_wrreg16(ks, KS_ISR, handled);
-
-	if (status & IRQ_RXI) {
-		/* the datasheet says to disable the rx interrupt during
-		 * packet read-out, however we're masking the interrupt
-		 * from the device so do not bother masking just the RX
-		 * from the device. */
-
-		ks8851_rx_pkts(ks);
-	}
-
-	/* if something stopped the rx process, probably due to wanting
-	 * to change the rx settings, then do something about restarting
-	 * it. */
-	if (status & IRQ_RXPSI) {
-		struct ks8851_rxctrl *rxc = &ks->rxctrl;
-
-		/* update the multicast hash table */
-		ks8851_wrreg16(ks, KS_MAHTR0, rxc->mchash[0]);
-		ks8851_wrreg16(ks, KS_MAHTR1, rxc->mchash[1]);
-		ks8851_wrreg16(ks, KS_MAHTR2, rxc->mchash[2]);
-		ks8851_wrreg16(ks, KS_MAHTR3, rxc->mchash[3]);
-
-		ks8851_wrreg16(ks, KS_RXCR2, rxc->rxcr2);
-		ks8851_wrreg16(ks, KS_RXCR1, rxc->rxcr1);
-	}
-
-	mutex_unlock(&ks->lock);
-
-	if (status & IRQ_TXI)
-		netif_wake_queue(ks->netdev);
-
-	enable_irq(ks->netdev->irq);
-}
-
-/**
- * calc_txlen - calculate size of message to send packet
- * @len: Length of data
- *
- * Returns the size of the TXFIFO message needed to send
- * this packet.
- */
-static inline unsigned calc_txlen(unsigned len)
-{
-	return ALIGN(len + 4, 4);
-}
-
-/**
- * ks8851_wrpkt - write packet to TX FIFO
- * @ks: The device state.
- * @txp: The sk_buff to transmit.
- * @irq: IRQ on completion of the packet.
- *
- * Send the @txp to the chip. This means creating the relevant packet header
- * specifying the length of the packet and the other information the chip
- * needs, such as IRQ on completion. Send the header and the packet data to
- * the device.
- */
-static void ks8851_wrpkt(struct ks8851_net *ks, struct sk_buff *txp, bool irq)
-{
-	struct spi_transfer *xfer = ks->spi_xfer2;
-	struct spi_message *msg = &ks->spi_msg2;
-	unsigned fid = 0;
-	int ret;
-
-	netif_dbg(ks, tx_queued, ks->netdev, "%s: skb %p, %d@%p, irq %d\n",
-		  __func__, txp, txp->len, txp->data, irq);
-
-	fid = ks->fid++;
-	fid &= TXFR_TXFID_MASK;
-
-	if (irq)
-		fid |= TXFR_TXIC;	/* irq on completion */
-
-	/* start header at txb[1] to align txw entries */
-	ks->txh.txb[1] = KS_SPIOP_TXFIFO;
-	ks->txh.txw[1] = cpu_to_le16(fid);
-	ks->txh.txw[2] = cpu_to_le16(txp->len);
-
-	xfer->tx_buf = &ks->txh.txb[1];
-	xfer->rx_buf = NULL;
-	xfer->len = 5;
-
-	xfer++;
-	xfer->tx_buf = txp->data;
-	xfer->rx_buf = NULL;
-	xfer->len = ALIGN(txp->len, 4);
-
-	ret = spi_sync(ks->spidev, msg);
-	if (ret < 0)
-		netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);
-}
-
-/**
- * ks8851_done_tx - update and then free skbuff after transmitting
- * @ks: The device state
- * @txb: The buffer transmitted
- */
-static void ks8851_done_tx(struct ks8851_net *ks, struct sk_buff *txb)
-{
-	struct net_device *dev = ks->netdev;
-
-	dev->stats.tx_bytes += txb->len;
-	dev->stats.tx_packets++;
-
-	dev_kfree_skb(txb);
-}
-
-/**
- * ks8851_tx_work - process tx packet(s)
- * @work: The work strucutre what was scheduled.
- *
- * This is called when a number of packets have been scheduled for
- * transmission and need to be sent to the device.
- */
-static void ks8851_tx_work(struct work_struct *work)
-{
-	struct ks8851_net *ks = container_of(work, struct ks8851_net, tx_work);
-	struct sk_buff *txb;
-	bool last = skb_queue_empty(&ks->txq);
-
-	mutex_lock(&ks->lock);
-
-	while (!last) {
-		txb = skb_dequeue(&ks->txq);
-		last = skb_queue_empty(&ks->txq);
-
-		if (txb != NULL) {
-			ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
-			ks8851_wrpkt(ks, txb, last);
-			ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-			ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
-
-			ks8851_done_tx(ks, txb);
-		}
-	}
-
-	mutex_unlock(&ks->lock);
-}
-
-/**
- * ks8851_set_powermode - set power mode of the device
- * @ks: The device state
- * @pwrmode: The power mode value to write to KS_PMECR.
- *
- * Change the power mode of the chip.
- */
-static void ks8851_set_powermode(struct ks8851_net *ks, unsigned pwrmode)
-{
-	unsigned pmecr;
-
-	netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);
-
-	pmecr = ks8851_rdreg16(ks, KS_PMECR);
-	pmecr &= ~PMECR_PM_MASK;
-	pmecr |= pwrmode;
-
-	ks8851_wrreg16(ks, KS_PMECR, pmecr);
-}
-
-/**
- * ks8851_net_open - open network device
- * @dev: 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 ks8851_net_open(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-
-	/* lock the card, even if we may not actually be doing anything
-	 * else at the moment */
-	mutex_lock(&ks->lock);
-
-	netif_dbg(ks, ifup, ks->netdev, "opening\n");
-
-	/* bring chip out of any power saving mode it was in */
-	ks8851_set_powermode(ks, PMECR_PM_NORMAL);
-
-	/* issue a soft reset to the RX/TX QMU to put it into a known
-	 * state. */
-	ks8851_soft_reset(ks, GRR_QMU);
-
-	/* setup transmission parameters */
-
-	ks8851_wrreg16(ks, KS_TXCR, (TXCR_TXE | /* enable transmit process */
-				     TXCR_TXPE | /* pad to min length */
-				     TXCR_TXCRC | /* add CRC */
-				     TXCR_TXFCE)); /* enable flow control */
-
-	/* auto-increment tx data, reset tx pointer */
-	ks8851_wrreg16(ks, KS_TXFDPR, TXFDPR_TXFPAI);
-
-	/* setup receiver control */
-
-	ks8851_wrreg16(ks, KS_RXCR1, (RXCR1_RXPAFMA | /*  from mac filter */
-				      RXCR1_RXFCE | /* enable flow control */
-				      RXCR1_RXBE | /* broadcast enable */
-				      RXCR1_RXUE | /* unicast enable */
-				      RXCR1_RXE)); /* enable rx block */
-
-	/* transfer entire frames out in one go */
-	ks8851_wrreg16(ks, KS_RXCR2, RXCR2_SRDBL_FRAME);
-
-	/* set receive counter timeouts */
-	ks8851_wrreg16(ks, KS_RXDTTR, 1000); /* 1ms after first frame to IRQ */
-	ks8851_wrreg16(ks, KS_RXDBCTR, 4096); /* >4Kbytes in buffer to IRQ */
-	ks8851_wrreg16(ks, KS_RXFCTR, 10);  /* 10 frames to IRQ */
-
-	ks->rc_rxqcr = (RXQCR_RXFCTE |  /* IRQ on frame count exceeded */
-			RXQCR_RXDBCTE | /* IRQ on byte count exceeded */
-			RXQCR_RXDTTE);  /* IRQ on time exceeded */
-
-	ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-
-	/* clear then enable interrupts */
-
-#define STD_IRQ (IRQ_LCI |	/* Link Change */	\
-		 IRQ_TXI |	/* TX done */		\
-		 IRQ_RXI |	/* RX done */		\
-		 IRQ_SPIBEI |	/* SPI bus error */	\
-		 IRQ_TXPSI |	/* TX process stop */	\
-		 IRQ_RXPSI)	/* RX process stop */
-
-	ks->rc_ier = STD_IRQ;
-	ks8851_wrreg16(ks, KS_ISR, STD_IRQ);
-	ks8851_wrreg16(ks, KS_IER, STD_IRQ);
-
-	netif_start_queue(ks->netdev);
-
-	netif_dbg(ks, ifup, ks->netdev, "network device up\n");
-
-	mutex_unlock(&ks->lock);
-	return 0;
-}
-
-/**
- * ks8851_net_stop - close network device
- * @dev: 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 ks8851_net_stop(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-
-	netif_info(ks, ifdown, dev, "shutting down\n");
-
-	netif_stop_queue(dev);
-
-	mutex_lock(&ks->lock);
-
-	/* stop any outstanding work */
-	flush_work(&ks->irq_work);
-	flush_work(&ks->tx_work);
-	flush_work(&ks->rxctrl_work);
-
-	/* turn off the IRQs and ack any outstanding */
-	ks8851_wrreg16(ks, KS_IER, 0x0000);
-	ks8851_wrreg16(ks, KS_ISR, 0xffff);
-
-	/* shutdown RX process */
-	ks8851_wrreg16(ks, KS_RXCR1, 0x0000);
-
-	/* shutdown TX process */
-	ks8851_wrreg16(ks, KS_TXCR, 0x0000);
-
-	/* set powermode to soft power down to save power */
-	ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);
-
-	/* ensure any queued tx buffers are dumped */
-	while (!skb_queue_empty(&ks->txq)) {
-		struct sk_buff *txb = skb_dequeue(&ks->txq);
-
-		netif_dbg(ks, ifdown, ks->netdev,
-			  "%s: freeing txb %p\n", __func__, txb);
-
-		dev_kfree_skb(txb);
-	}
-
-	mutex_unlock(&ks->lock);
-	return 0;
-}
-
-/**
- * ks8851_start_xmit - transmit packet
- * @skb: The buffer to transmit
- * @dev: The device used to transmit the packet.
- *
- * Called by the network layer to transmit the @skb. Queue the packet for
- * the device and schedule the necessary work to transmit the packet when
- * it is free.
- *
- * We do this to firstly avoid sleeping with the network device locked,
- * and secondly so we can round up more than one packet to transmit which
- * means we can try and avoid generating too many transmit done interrupts.
- */
-static netdev_tx_t ks8851_start_xmit(struct sk_buff *skb,
-				     struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	unsigned needed = calc_txlen(skb->len);
-	netdev_tx_t ret = NETDEV_TX_OK;
-
-	netif_dbg(ks, tx_queued, ks->netdev,
-		  "%s: skb %p, %d@%p\n", __func__, skb, skb->len, skb->data);
-
-	spin_lock(&ks->statelock);
-
-	if (needed > ks->tx_space) {
-		netif_stop_queue(dev);
-		ret = NETDEV_TX_BUSY;
-	} else {
-		ks->tx_space -= needed;
-		skb_queue_tail(&ks->txq, skb);
-	}
-
-	spin_unlock(&ks->statelock);
-	schedule_work(&ks->tx_work);
-
-	return ret;
-}
-
-/**
- * ks8851_rxctrl_work - work handler to change rx mode
- * @work: The work structure this belongs to.
- *
- * Lock the device and issue the necessary changes to the receive mode from
- * the network device layer. This is done so that we can do this without
- * having to sleep whilst holding the network device lock.
- *
- * Since the recommendation from Micrel is that the RXQ is shutdown whilst the
- * receive parameters are programmed, we issue a write to disable the RXQ and
- * then wait for the interrupt handler to be triggered once the RXQ shutdown is
- * complete. The interrupt handler then writes the new values into the chip.
- */
-static void ks8851_rxctrl_work(struct work_struct *work)
-{
-	struct ks8851_net *ks = container_of(work, struct ks8851_net, rxctrl_work);
-
-	mutex_lock(&ks->lock);
-
-	/* need to shutdown RXQ before modifying filter parameters */
-	ks8851_wrreg16(ks, KS_RXCR1, 0x00);
-
-	mutex_unlock(&ks->lock);
-}
-
-static void ks8851_set_rx_mode(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	struct ks8851_rxctrl rxctrl;
-
-	memset(&rxctrl, 0, sizeof(rxctrl));
-
-	if (dev->flags & IFF_PROMISC) {
-		/* interface to receive everything */
-
-		rxctrl.rxcr1 = RXCR1_RXAE | RXCR1_RXINVF;
-	} else if (dev->flags & IFF_ALLMULTI) {
-		/* accept all multicast packets */
-
-		rxctrl.rxcr1 = (RXCR1_RXME | RXCR1_RXAE |
-				RXCR1_RXPAFMA | RXCR1_RXMAFMA);
-	} else if (dev->flags & IFF_MULTICAST && !netdev_mc_empty(dev)) {
-		struct netdev_hw_addr *ha;
-		u32 crc;
-
-		/* accept some multicast */
-
-		netdev_for_each_mc_addr(ha, dev) {
-			crc = ether_crc(ETH_ALEN, ha->addr);
-			crc >>= (32 - 6);  /* get top six bits */
-
-			rxctrl.mchash[crc >> 4] |= (1 << (crc & 0xf));
-		}
-
-		rxctrl.rxcr1 = RXCR1_RXME | RXCR1_RXPAFMA;
-	} else {
-		/* just accept broadcast / unicast */
-		rxctrl.rxcr1 = RXCR1_RXPAFMA;
-	}
-
-	rxctrl.rxcr1 |= (RXCR1_RXUE | /* unicast enable */
-			 RXCR1_RXBE | /* broadcast enable */
-			 RXCR1_RXE | /* RX process enable */
-			 RXCR1_RXFCE); /* enable flow control */
-
-	rxctrl.rxcr2 |= RXCR2_SRDBL_FRAME;
-
-	/* schedule work to do the actual set of the data if needed */
-
-	spin_lock(&ks->statelock);
-
-	if (memcmp(&rxctrl, &ks->rxctrl, sizeof(rxctrl)) != 0) {
-		memcpy(&ks->rxctrl, &rxctrl, sizeof(ks->rxctrl));
-		schedule_work(&ks->rxctrl_work);
-	}
-
-	spin_unlock(&ks->statelock);
-}
-
-static int ks8851_set_mac_address(struct net_device *dev, void *addr)
-{
-	struct sockaddr *sa = addr;
-
-	if (netif_running(dev))
-		return -EBUSY;
-
-	if (!is_valid_ether_addr(sa->sa_data))
-		return -EADDRNOTAVAIL;
-
-	memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
-	return ks8851_write_mac_addr(dev);
-}
-
-static int ks8851_net_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-
-	if (!netif_running(dev))
-		return -EINVAL;
-
-	return generic_mii_ioctl(&ks->mii, if_mii(req), cmd, NULL);
-}
-
-static const struct net_device_ops ks8851_netdev_ops = {
-	.ndo_open		= ks8851_net_open,
-	.ndo_stop		= ks8851_net_stop,
-	.ndo_do_ioctl		= ks8851_net_ioctl,
-	.ndo_start_xmit		= ks8851_start_xmit,
-	.ndo_set_mac_address	= ks8851_set_mac_address,
-	.ndo_set_rx_mode	= ks8851_set_rx_mode,
-	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_validate_addr	= eth_validate_addr,
-};
-
-/* Companion eeprom access */
-
-enum {	/* EEPROM programming states */
-	EEPROM_CONTROL,
-	EEPROM_ADDRESS,
-	EEPROM_DATA,
-	EEPROM_COMPLETE
-};
-
-/**
- * ks8851_eeprom_read - read a 16bits word in ks8851 companion EEPROM
- * @dev: The network device the PHY is on.
- * @addr: EEPROM address to read
- *
- * eeprom_size: used to define the data coding length. Can be changed
- * through debug-fs.
- *
- * Programs a read on the EEPROM using ks8851 EEPROM SW access feature.
- * Warning: The READ feature is not supported on ks8851 revision 0.
- *
- * Rough programming model:
- *  - on period start: set clock high and read value on bus
- *  - on period / 2: set clock low and program value on bus
- *  - start on period / 2
- */
-unsigned int ks8851_eeprom_read(struct net_device *dev, unsigned int addr)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	int eepcr;
-	int ctrl = EEPROM_OP_READ;
-	int state = EEPROM_CONTROL;
-	int bit_count = EEPROM_OP_LEN - 1;
-	unsigned int data = 0;
-	int dummy;
-	unsigned int addr_len;
-
-	addr_len = (ks->eeprom_size == 128) ? 6 : 8;
-
-	/* start transaction: chip select high, authorize write */
-	mutex_lock(&ks->lock);
-	eepcr = EEPCR_EESA | EEPCR_EESRWA;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	eepcr |= EEPCR_EECS;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	mutex_unlock(&ks->lock);
-
-	while (state != EEPROM_COMPLETE) {
-		/* falling clock period starts... */
-		/* set EED_IO pin for control and address */
-		eepcr &= ~EEPCR_EEDO;
-		switch (state) {
-		case EEPROM_CONTROL:
-			eepcr |= ((ctrl >> bit_count) & 1) << 2;
-			if (bit_count-- <= 0) {
-				bit_count = addr_len - 1;
-				state = EEPROM_ADDRESS;
-			}
-			break;
-		case EEPROM_ADDRESS:
-			eepcr |= ((addr >> bit_count) & 1) << 2;
-			bit_count--;
-			break;
-		case EEPROM_DATA:
-			/* Change to receive mode */
-			eepcr &= ~EEPCR_EESRWA;
-			break;
-		}
-
-		/* lower clock  */
-		eepcr &= ~EEPCR_EESCK;
-
-		mutex_lock(&ks->lock);
-		ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-		mutex_unlock(&ks->lock);
-
-		/* waitread period / 2 */
-		udelay(EEPROM_SK_PERIOD / 2);
-
-		/* rising clock period starts... */
-
-		/* raise clock */
-		mutex_lock(&ks->lock);
-		eepcr |= EEPCR_EESCK;
-		ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-		mutex_unlock(&ks->lock);
-
-		/* Manage read */
-		switch (state) {
-		case EEPROM_ADDRESS:
-			if (bit_count < 0) {
-				bit_count = EEPROM_DATA_LEN - 1;
-				state = EEPROM_DATA;
-			}
-			break;
-		case EEPROM_DATA:
-			mutex_lock(&ks->lock);
-			dummy = ks8851_rdreg16(ks, KS_EEPCR);
-			mutex_unlock(&ks->lock);
-			data |= ((dummy >> EEPCR_EESB_OFFSET) & 1) << bit_count;
-			if (bit_count-- <= 0)
-				state = EEPROM_COMPLETE;
-			break;
-		}
-
-		/* wait period / 2 */
-		udelay(EEPROM_SK_PERIOD / 2);
-	}
-
-	/* close transaction */
-	mutex_lock(&ks->lock);
-	eepcr &= ~EEPCR_EECS;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	eepcr = 0;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	mutex_unlock(&ks->lock);
-
-	return data;
-}
-
-/**
- * ks8851_eeprom_write - write a 16bits word in ks8851 companion EEPROM
- * @dev: The network device the PHY is on.
- * @op: operand (can be WRITE, EWEN, EWDS)
- * @addr: EEPROM address to write
- * @data: data to write
- *
- * eeprom_size: used to define the data coding length. Can be changed
- * through debug-fs.
- *
- * Programs a write on the EEPROM using ks8851 EEPROM SW access feature.
- *
- * Note that a write enable is required before writing data.
- *
- * Rough programming model:
- *  - on period start: set clock high
- *  - on period / 2: set clock low and program value on bus
- *  - start on period / 2
- */
-void ks8851_eeprom_write(struct net_device *dev, unsigned int op,
-					unsigned int addr, unsigned int data)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	int eepcr;
-	int state = EEPROM_CONTROL;
-	int bit_count = EEPROM_OP_LEN - 1;
-	unsigned int addr_len;
-
-	addr_len = (ks->eeprom_size == 128) ? 6 : 8;
-
-	switch (op) {
-	case EEPROM_OP_EWEN:
-		addr = 0x30;
-	break;
-	case EEPROM_OP_EWDS:
-		addr = 0;
-		break;
-	}
-
-	/* start transaction: chip select high, authorize write */
-	mutex_lock(&ks->lock);
-	eepcr = EEPCR_EESA | EEPCR_EESRWA;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	eepcr |= EEPCR_EECS;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	mutex_unlock(&ks->lock);
-
-	while (state != EEPROM_COMPLETE) {
-		/* falling clock period starts... */
-		/* set EED_IO pin for control and address */
-		eepcr &= ~EEPCR_EEDO;
-		switch (state) {
-		case EEPROM_CONTROL:
-			eepcr |= ((op >> bit_count) & 1) << 2;
-			if (bit_count-- <= 0) {
-				bit_count = addr_len - 1;
-				state = EEPROM_ADDRESS;
-			}
-			break;
-		case EEPROM_ADDRESS:
-			eepcr |= ((addr >> bit_count) & 1) << 2;
-			if (bit_count-- <= 0) {
-				if (op == EEPROM_OP_WRITE) {
-					bit_count = EEPROM_DATA_LEN - 1;
-					state = EEPROM_DATA;
-				} else {
-					state = EEPROM_COMPLETE;
-				}
-			}
-			break;
-		case EEPROM_DATA:
-			eepcr |= ((data >> bit_count) & 1) << 2;
-			if (bit_count-- <= 0)
-				state = EEPROM_COMPLETE;
-			break;
-		}
-
-		/* lower clock  */
-		eepcr &= ~EEPCR_EESCK;
-
-		mutex_lock(&ks->lock);
-		ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-		mutex_unlock(&ks->lock);
-
-		/* wait period / 2 */
-		udelay(EEPROM_SK_PERIOD / 2);
-
-		/* rising clock period starts... */
-
-		/* raise clock */
-		eepcr |= EEPCR_EESCK;
-		mutex_lock(&ks->lock);
-		ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-		mutex_unlock(&ks->lock);
-
-		/* wait period / 2 */
-		udelay(EEPROM_SK_PERIOD / 2);
-	}
-
-	/* close transaction */
-	mutex_lock(&ks->lock);
-	eepcr &= ~EEPCR_EECS;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	eepcr = 0;
-	ks8851_wrreg16(ks, KS_EEPCR, eepcr);
-	mutex_unlock(&ks->lock);
-
-}
-
-/* ethtool support */
-
-static void ks8851_get_drvinfo(struct net_device *dev,
-			       struct ethtool_drvinfo *di)
-{
-	strlcpy(di->driver, "KS8851", sizeof(di->driver));
-	strlcpy(di->version, "1.00", sizeof(di->version));
-	strlcpy(di->bus_info, dev_name(dev->dev.parent), sizeof(di->bus_info));
-}
-
-static u32 ks8851_get_msglevel(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return ks->msg_enable;
-}
-
-static void ks8851_set_msglevel(struct net_device *dev, u32 to)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	ks->msg_enable = to;
-}
-
-static int ks8851_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return mii_ethtool_gset(&ks->mii, cmd);
-}
-
-static int ks8851_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return mii_ethtool_sset(&ks->mii, cmd);
-}
-
-static u32 ks8851_get_link(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return mii_link_ok(&ks->mii);
-}
-
-static int ks8851_nway_reset(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return mii_nway_restart(&ks->mii);
-}
-
-static int ks8851_get_eeprom_len(struct net_device *dev)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	return ks->eeprom_size;
-}
-
-static int ks8851_get_eeprom(struct net_device *dev,
-			    struct ethtool_eeprom *eeprom, u8 *bytes)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	u16 *eeprom_buff;
-	int first_word;
-	int last_word;
-	int ret_val = 0;
-	u16 i;
-
-	if (eeprom->len == 0)
-		return -EINVAL;
-
-	if (eeprom->len > ks->eeprom_size)
-		return -EINVAL;
-
-	eeprom->magic = ks8851_rdreg16(ks, KS_CIDER);
-
-	first_word = eeprom->offset >> 1;
-	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
-
-	eeprom_buff = kmalloc(sizeof(u16) *
-			(last_word - first_word + 1), GFP_KERNEL);
-	if (!eeprom_buff)
-		return -ENOMEM;
-
-	for (i = 0; i < last_word - first_word + 1; i++)
-		eeprom_buff[i] = ks8851_eeprom_read(dev, first_word + 1);
-
-	/* Device's eeprom is little-endian, word addressable */
-	for (i = 0; i < last_word - first_word + 1; i++)
-		le16_to_cpus(&eeprom_buff[i]);
-
-	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
-	kfree(eeprom_buff);
-
-	return ret_val;
-}
-
-static int ks8851_set_eeprom(struct net_device *dev,
-			    struct ethtool_eeprom *eeprom, u8 *bytes)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	u16 *eeprom_buff;
-	void *ptr;
-	int max_len;
-	int first_word;
-	int last_word;
-	int ret_val = 0;
-	u16 i;
-
-	if (eeprom->len == 0)
-		return -EOPNOTSUPP;
-
-	if (eeprom->len > ks->eeprom_size)
-		return -EINVAL;
-
-	if (eeprom->magic != ks8851_rdreg16(ks, KS_CIDER))
-		return -EFAULT;
-
-	first_word = eeprom->offset >> 1;
-	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
-	max_len = (last_word - first_word + 1) * 2;
-	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
-	if (!eeprom_buff)
-		return -ENOMEM;
-
-	ptr = (void *)eeprom_buff;
-
-	if (eeprom->offset & 1) {
-		/* need read/modify/write of first changed EEPROM word */
-		/* only the second byte of the word is being modified */
-		eeprom_buff[0] = ks8851_eeprom_read(dev, first_word);
-		ptr++;
-	}
-	if ((eeprom->offset + eeprom->len) & 1)
-		/* need read/modify/write of last changed EEPROM word */
-		/* only the first byte of the word is being modified */
-		eeprom_buff[last_word - first_word] =
-					ks8851_eeprom_read(dev, last_word);
-
-
-	/* Device's eeprom is little-endian, word addressable */
-	le16_to_cpus(&eeprom_buff[0]);
-	le16_to_cpus(&eeprom_buff[last_word - first_word]);
-
-	memcpy(ptr, bytes, eeprom->len);
-
-	for (i = 0; i < last_word - first_word + 1; i++)
-		eeprom_buff[i] = cpu_to_le16(eeprom_buff[i]);
-
-	ks8851_eeprom_write(dev, EEPROM_OP_EWEN, 0, 0);
-
-	for (i = 0; i < last_word - first_word + 1; i++) {
-		ks8851_eeprom_write(dev, EEPROM_OP_WRITE, first_word + i,
-							eeprom_buff[i]);
-		mdelay(EEPROM_WRITE_TIME);
-	}
-
-	ks8851_eeprom_write(dev, EEPROM_OP_EWDS, 0, 0);
-
-	kfree(eeprom_buff);
-	return ret_val;
-}
-
-static const struct ethtool_ops ks8851_ethtool_ops = {
-	.get_drvinfo	= ks8851_get_drvinfo,
-	.get_msglevel	= ks8851_get_msglevel,
-	.set_msglevel	= ks8851_set_msglevel,
-	.get_settings	= ks8851_get_settings,
-	.set_settings	= ks8851_set_settings,
-	.get_link	= ks8851_get_link,
-	.nway_reset	= ks8851_nway_reset,
-	.get_eeprom_len	= ks8851_get_eeprom_len,
-	.get_eeprom	= ks8851_get_eeprom,
-	.set_eeprom	= ks8851_set_eeprom,
-};
-
-/* MII interface controls */
-
-/**
- * ks8851_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 ks8851_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;
-}
-
-/**
- * ks8851_phy_read - MII interface PHY register read.
- * @dev: 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 ks8851_phy_read(struct net_device *dev, int phy_addr, int reg)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	int ksreg;
-	int result;
-
-	ksreg = ks8851_phy_reg(reg);
-	if (!ksreg)
-		return 0x0;	/* no error return allowed, so use zero */
-
-	mutex_lock(&ks->lock);
-	result = ks8851_rdreg16(ks, ksreg);
-	mutex_unlock(&ks->lock);
-
-	return result;
-}
-
-static void ks8851_phy_write(struct net_device *dev,
-			     int phy, int reg, int value)
-{
-	struct ks8851_net *ks = netdev_priv(dev);
-	int ksreg;
-
-	ksreg = ks8851_phy_reg(reg);
-	if (ksreg) {
-		mutex_lock(&ks->lock);
-		ks8851_wrreg16(ks, ksreg, value);
-		mutex_unlock(&ks->lock);
-	}
-}
-
-/**
- * ks8851_read_selftest - read the selftest memory info.
- * @ks: The device state
- *
- * Read and check the TX/RX memory selftest information.
- */
-static int ks8851_read_selftest(struct ks8851_net *ks)
-{
-	unsigned both_done = MBIR_TXMBF | MBIR_RXMBF;
-	int ret = 0;
-	unsigned rd;
-
-	rd = ks8851_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 fail\n");
-		ret |= 1;
-	}
-
-	if (rd & MBIR_RXMBFA) {
-		netdev_err(ks->netdev, "RX memory selftest fail\n");
-		ret |= 2;
-	}
-
-	return 0;
-}
-
-/* driver bus management functions */
-
-#ifdef CONFIG_PM
-static int ks8851_suspend(struct spi_device *spi, pm_message_t state)
-{
-	struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
-	struct net_device *dev = ks->netdev;
-
-	if (netif_running(dev)) {
-		netif_device_detach(dev);
-		ks8851_net_stop(dev);
-	}
-
-	return 0;
-}
-
-static int ks8851_resume(struct spi_device *spi)
-{
-	struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
-	struct net_device *dev = ks->netdev;
-
-	if (netif_running(dev)) {
-		ks8851_net_open(dev);
-		netif_device_attach(dev);
-	}
-
-	return 0;
-}
-#else
-#define ks8851_suspend NULL
-#define ks8851_resume NULL
-#endif
-
-static int __devinit ks8851_probe(struct spi_device *spi)
-{
-	struct net_device *ndev;
-	struct ks8851_net *ks;
-	int ret;
-
-	ndev = alloc_etherdev(sizeof(struct ks8851_net));
-	if (!ndev) {
-		dev_err(&spi->dev, "failed to alloc ethernet device\n");
-		return -ENOMEM;
-	}
-
-	spi->bits_per_word = 8;
-
-	ks = netdev_priv(ndev);
-
-	ks->netdev = ndev;
-	ks->spidev = spi;
-	ks->tx_space = 6144;
-
-	mutex_init(&ks->lock);
-	spin_lock_init(&ks->statelock);
-
-	INIT_WORK(&ks->tx_work, ks8851_tx_work);
-	INIT_WORK(&ks->irq_work, ks8851_irq_work);
-	INIT_WORK(&ks->rxctrl_work, ks8851_rxctrl_work);
-
-	/* initialise pre-made spi transfer messages */
-
-	spi_message_init(&ks->spi_msg1);
-	spi_message_add_tail(&ks->spi_xfer1, &ks->spi_msg1);
-
-	spi_message_init(&ks->spi_msg2);
-	spi_message_add_tail(&ks->spi_xfer2[0], &ks->spi_msg2);
-	spi_message_add_tail(&ks->spi_xfer2[1], &ks->spi_msg2);
-
-	/* setup mii state */
-	ks->mii.dev		= ndev;
-	ks->mii.phy_id		= 1,
-	ks->mii.phy_id_mask	= 1;
-	ks->mii.reg_num_mask	= 0xf;
-	ks->mii.mdio_read	= ks8851_phy_read;
-	ks->mii.mdio_write	= ks8851_phy_write;
-
-	dev_info(&spi->dev, "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));
-
-	skb_queue_head_init(&ks->txq);
-
-	SET_ETHTOOL_OPS(ndev, &ks8851_ethtool_ops);
-	SET_NETDEV_DEV(ndev, &spi->dev);
-
-	dev_set_drvdata(&spi->dev, ks);
-
-	ndev->if_port = IF_PORT_100BASET;
-	ndev->netdev_ops = &ks8851_netdev_ops;
-	ndev->irq = spi->irq;
-
-	/* issue a global soft reset to reset the device. */
-	ks8851_soft_reset(ks, GRR_GSR);
-
-	/* simple check for a valid chip being connected to the bus */
-
-	if ((ks8851_rdreg16(ks, KS_CIDER) & ~CIDER_REV_MASK) != CIDER_ID) {
-		dev_err(&spi->dev, "failed to read device ID\n");
-		ret = -ENODEV;
-		goto err_id;
-	}
-
-	/* cache the contents of the CCR register for EEPROM, etc. */
-	ks->rc_ccr = ks8851_rdreg16(ks, KS_CCR);
-
-	if (ks->rc_ccr & CCR_EEPROM)
-		ks->eeprom_size = 128;
-	else
-		ks->eeprom_size = 0;
-
-	ks8851_read_selftest(ks);
-	ks8851_init_mac(ks);
-
-	ret = request_irq(spi->irq, ks8851_irq, IRQF_TRIGGER_LOW,
-			  ndev->name, ks);
-	if (ret < 0) {
-		dev_err(&spi->dev, "failed to get irq\n");
-		goto err_irq;
-	}
-
-	ret = register_netdev(ndev);
-	if (ret) {
-		dev_err(&spi->dev, "failed to register network device\n");
-		goto err_netdev;
-	}
-
-	netdev_info(ndev, "revision %d, MAC %pM, IRQ %d\n",
-		    CIDER_REV_GET(ks8851_rdreg16(ks, KS_CIDER)),
-		    ndev->dev_addr, ndev->irq);
-
-	return 0;
-
-
-err_netdev:
-	free_irq(ndev->irq, ndev);
-
-err_id:
-err_irq:
-	free_netdev(ndev);
-	return ret;
-}
-
-static int __devexit ks8851_remove(struct spi_device *spi)
-{
-	struct ks8851_net *priv = dev_get_drvdata(&spi->dev);
-
-	if (netif_msg_drv(priv))
-		dev_info(&spi->dev, "remove\n");
-
-	unregister_netdev(priv->netdev);
-	free_irq(spi->irq, priv);
-	free_netdev(priv->netdev);
-
-	return 0;
-}
-
-static struct spi_driver ks8851_driver = {
-	.driver = {
-		.name = "ks8851",
-		.owner = THIS_MODULE,
-	},
-	.probe = ks8851_probe,
-	.remove = __devexit_p(ks8851_remove),
-	.suspend = ks8851_suspend,
-	.resume = ks8851_resume,
-};
-
-static int __init ks8851_init(void)
-{
-	return spi_register_driver(&ks8851_driver);
-}
-
-static void __exit ks8851_exit(void)
-{
-	spi_unregister_driver(&ks8851_driver);
-}
-
-module_init(ks8851_init);
-module_exit(ks8851_exit);
-
-MODULE_DESCRIPTION("KS8851 Network driver");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL");
-
-module_param_named(message, msg_enable, int, 0);
-MODULE_PARM_DESC(message, "Message verbosity level (0=none, 31=all)");
-MODULE_ALIAS("spi:ks8851");