nuvoton: Move the Nuvoton driver

Move the Nuvoton driver into drivers/net/ethernet/nuvoton/ and
make the necessary Kconfig and Makefile changes.

CC: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

3 files changed, 0 insertions, 1133 deletions

diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig
index fc94b4bd65f..57d16b91d10 100644
--- a/drivers/net/arm/Kconfig
+++ b/drivers/net/arm/Kconfig
@@ -10,12 +10,3 @@ config ARM_AT91_ETHER
 	help
 	  If you wish to compile a kernel for the AT91RM9200 and enable
 	  ethernet support, then you should always answer Y to this.
-
-config W90P910_ETH
-	tristate "Nuvoton w90p910 Ethernet support"
-	depends on ARM && ARCH_W90X900
-	select PHYLIB
-	select MII
-	help
-	  Say Y here if you want to use built-in Ethernet ports
-	  on w90p910 processor.
diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile
index 462b3a4fe70..fc0f85c53a7 100644
--- a/drivers/net/arm/Makefile
+++ b/drivers/net/arm/Makefile
@@ -4,4 +4,3 @@
 #
 
 obj-$(CONFIG_ARM_AT91_ETHER)	+= at91_ether.o
-obj-$(CONFIG_W90P910_ETH)	+= w90p910_ether.o
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
deleted file mode 100644
index bfea499a351..00000000000
--- a/drivers/net/arm/w90p910_ether.c
+++ /dev/null
@@ -1,1123 +0,0 @@
-/*
- * Copyright (c) 2008-2009 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation;version 2 of the License.
- *
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/ethtool.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/gfp.h>
-
-#define DRV_MODULE_NAME		"w90p910-emc"
-#define DRV_MODULE_VERSION	"0.1"
-
-/* Ethernet MAC Registers */
-#define REG_CAMCMR		0x00
-#define REG_CAMEN		0x04
-#define REG_CAMM_BASE		0x08
-#define REG_CAML_BASE		0x0c
-#define REG_TXDLSA		0x88
-#define REG_RXDLSA		0x8C
-#define REG_MCMDR		0x90
-#define REG_MIID		0x94
-#define REG_MIIDA		0x98
-#define REG_FFTCR		0x9C
-#define REG_TSDR		0xa0
-#define REG_RSDR		0xa4
-#define REG_DMARFC		0xa8
-#define REG_MIEN		0xac
-#define REG_MISTA		0xb0
-#define REG_CTXDSA		0xcc
-#define REG_CTXBSA		0xd0
-#define REG_CRXDSA		0xd4
-#define REG_CRXBSA		0xd8
-
-/* mac controller bit */
-#define MCMDR_RXON		0x01
-#define MCMDR_ACP		(0x01 << 3)
-#define MCMDR_SPCRC		(0x01 << 5)
-#define MCMDR_TXON		(0x01 << 8)
-#define MCMDR_FDUP		(0x01 << 18)
-#define MCMDR_ENMDC		(0x01 << 19)
-#define MCMDR_OPMOD		(0x01 << 20)
-#define SWR			(0x01 << 24)
-
-/* cam command regiser */
-#define CAMCMR_AUP		0x01
-#define CAMCMR_AMP		(0x01 << 1)
-#define CAMCMR_ABP		(0x01 << 2)
-#define CAMCMR_CCAM		(0x01 << 3)
-#define CAMCMR_ECMP		(0x01 << 4)
-#define CAM0EN			0x01
-
-/* mac mii controller bit */
-#define MDCCR			(0x0a << 20)
-#define PHYAD			(0x01 << 8)
-#define PHYWR			(0x01 << 16)
-#define PHYBUSY			(0x01 << 17)
-#define PHYPRESP		(0x01 << 18)
-#define CAM_ENTRY_SIZE		0x08
-
-/* rx and tx status */
-#define TXDS_TXCP		(0x01 << 19)
-#define RXDS_CRCE		(0x01 << 17)
-#define RXDS_PTLE		(0x01 << 19)
-#define RXDS_RXGD		(0x01 << 20)
-#define RXDS_ALIE		(0x01 << 21)
-#define RXDS_RP			(0x01 << 22)
-
-/* mac interrupt status*/
-#define MISTA_EXDEF		(0x01 << 19)
-#define MISTA_TXBERR		(0x01 << 24)
-#define MISTA_TDU		(0x01 << 23)
-#define MISTA_RDU		(0x01 << 10)
-#define MISTA_RXBERR		(0x01 << 11)
-
-#define ENSTART			0x01
-#define ENRXINTR		0x01
-#define ENRXGD			(0x01 << 4)
-#define ENRXBERR		(0x01 << 11)
-#define ENTXINTR		(0x01 << 16)
-#define ENTXCP			(0x01 << 18)
-#define ENTXABT			(0x01 << 21)
-#define ENTXBERR		(0x01 << 24)
-#define ENMDC			(0x01 << 19)
-#define PHYBUSY			(0x01 << 17)
-#define MDCCR_VAL		0xa00000
-
-/* rx and tx owner bit */
-#define RX_OWEN_DMA		(0x01 << 31)
-#define RX_OWEN_CPU		(~(0x03 << 30))
-#define TX_OWEN_DMA		(0x01 << 31)
-#define TX_OWEN_CPU		(~(0x01 << 31))
-
-/* tx frame desc controller bit */
-#define MACTXINTEN		0x04
-#define CRCMODE			0x02
-#define PADDINGMODE		0x01
-
-/* fftcr controller bit */
-#define TXTHD 			(0x03 << 8)
-#define BLENGTH			(0x01 << 20)
-
-/* global setting for driver */
-#define RX_DESC_SIZE		50
-#define TX_DESC_SIZE		10
-#define MAX_RBUFF_SZ		0x600
-#define MAX_TBUFF_SZ		0x600
-#define TX_TIMEOUT		(HZ/2)
-#define DELAY			1000
-#define CAM0			0x0
-
-static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg);
-
-struct w90p910_rxbd {
-	unsigned int sl;
-	unsigned int buffer;
-	unsigned int reserved;
-	unsigned int next;
-};
-
-struct w90p910_txbd {
-	unsigned int mode;
-	unsigned int buffer;
-	unsigned int sl;
-	unsigned int next;
-};
-
-struct recv_pdesc {
-	struct w90p910_rxbd desclist[RX_DESC_SIZE];
-	char recv_buf[RX_DESC_SIZE][MAX_RBUFF_SZ];
-};
-
-struct tran_pdesc {
-	struct w90p910_txbd desclist[TX_DESC_SIZE];
-	char tran_buf[TX_DESC_SIZE][MAX_TBUFF_SZ];
-};
-
-struct  w90p910_ether {
-	struct recv_pdesc *rdesc;
-	struct tran_pdesc *tdesc;
-	dma_addr_t rdesc_phys;
-	dma_addr_t tdesc_phys;
-	struct net_device_stats stats;
-	struct platform_device *pdev;
-	struct resource *res;
-	struct sk_buff *skb;
-	struct clk *clk;
-	struct clk *rmiiclk;
-	struct mii_if_info mii;
-	struct timer_list check_timer;
-	void __iomem *reg;
-	int rxirq;
-	int txirq;
-	unsigned int cur_tx;
-	unsigned int cur_rx;
-	unsigned int finish_tx;
-	unsigned int rx_packets;
-	unsigned int rx_bytes;
-	unsigned int start_tx_ptr;
-	unsigned int start_rx_ptr;
-	unsigned int linkflag;
-};
-
-static void update_linkspeed_register(struct net_device *dev,
-				unsigned int speed, unsigned int duplex)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = __raw_readl(ether->reg + REG_MCMDR);
-
-	if (speed == SPEED_100) {
-		/* 100 full/half duplex */
-		if (duplex == DUPLEX_FULL) {
-			val |= (MCMDR_OPMOD | MCMDR_FDUP);
-		} else {
-			val |= MCMDR_OPMOD;
-			val &= ~MCMDR_FDUP;
-		}
-	} else {
-		/* 10 full/half duplex */
-		if (duplex == DUPLEX_FULL) {
-			val |= MCMDR_FDUP;
-			val &= ~MCMDR_OPMOD;
-		} else {
-			val &= ~(MCMDR_FDUP | MCMDR_OPMOD);
-		}
-	}
-
-	__raw_writel(val, ether->reg + REG_MCMDR);
-}
-
-static void update_linkspeed(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct platform_device *pdev;
-	unsigned int bmsr, bmcr, lpa, speed, duplex;
-
-	pdev = ether->pdev;
-
-	if (!mii_link_ok(&ether->mii)) {
-		ether->linkflag = 0x0;
-		netif_carrier_off(dev);
-		dev_warn(&pdev->dev, "%s: Link down.\n", dev->name);
-		return;
-	}
-
-	if (ether->linkflag == 1)
-		return;
-
-	bmsr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMSR);
-	bmcr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMCR);
-
-	if (bmcr & BMCR_ANENABLE) {
-		if (!(bmsr & BMSR_ANEGCOMPLETE))
-			return;
-
-		lpa = w90p910_mdio_read(dev, ether->mii.phy_id, MII_LPA);
-
-		if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF))
-			speed = SPEED_100;
-		else
-			speed = SPEED_10;
-
-		if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL))
-			duplex = DUPLEX_FULL;
-		else
-			duplex = DUPLEX_HALF;
-
-	} else {
-		speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
-		duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
-	}
-
-	update_linkspeed_register(dev, speed, duplex);
-
-	dev_info(&pdev->dev, "%s: Link now %i-%s\n", dev->name, speed,
-			(duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
-	ether->linkflag = 0x01;
-
-	netif_carrier_on(dev);
-}
-
-static void w90p910_check_link(unsigned long dev_id)
-{
-	struct net_device *dev = (struct net_device *) dev_id;
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	update_linkspeed(dev);
-	mod_timer(&ether->check_timer, jiffies + msecs_to_jiffies(1000));
-}
-
-static void w90p910_write_cam(struct net_device *dev,
-				unsigned int x, unsigned char *pval)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int msw, lsw;
-
-	msw = (pval[0] << 24) | (pval[1] << 16) | (pval[2] << 8) | pval[3];
-
-	lsw = (pval[4] << 24) | (pval[5] << 16);
-
-	__raw_writel(lsw, ether->reg + REG_CAML_BASE + x * CAM_ENTRY_SIZE);
-	__raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
-}
-
-static int w90p910_init_desc(struct net_device *dev)
-{
-	struct w90p910_ether *ether;
-	struct w90p910_txbd  *tdesc;
-	struct w90p910_rxbd  *rdesc;
-	struct platform_device *pdev;
-	unsigned int i;
-
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	ether->tdesc = (struct tran_pdesc *)
-		dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
-					&ether->tdesc_phys, GFP_KERNEL);
-
-	if (!ether->tdesc) {
-		dev_err(&pdev->dev, "Failed to allocate memory for tx desc\n");
-		return -ENOMEM;
-	}
-
-	ether->rdesc = (struct recv_pdesc *)
-		dma_alloc_coherent(&pdev->dev, sizeof(struct recv_pdesc),
-					&ether->rdesc_phys, GFP_KERNEL);
-
-	if (!ether->rdesc) {
-		dev_err(&pdev->dev, "Failed to allocate memory for rx desc\n");
-		dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
-					ether->tdesc, ether->tdesc_phys);
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < TX_DESC_SIZE; i++) {
-		unsigned int offset;
-
-		tdesc = &(ether->tdesc->desclist[i]);
-
-		if (i == TX_DESC_SIZE - 1)
-			offset = offsetof(struct tran_pdesc, desclist[0]);
-		else
-			offset = offsetof(struct tran_pdesc, desclist[i + 1]);
-
-		tdesc->next = ether->tdesc_phys + offset;
-		tdesc->buffer = ether->tdesc_phys +
-			offsetof(struct tran_pdesc, tran_buf[i]);
-		tdesc->sl = 0;
-		tdesc->mode = 0;
-	}
-
-	ether->start_tx_ptr = ether->tdesc_phys;
-
-	for (i = 0; i < RX_DESC_SIZE; i++) {
-		unsigned int offset;
-
-		rdesc = &(ether->rdesc->desclist[i]);
-
-		if (i == RX_DESC_SIZE - 1)
-			offset = offsetof(struct recv_pdesc, desclist[0]);
-		else
-			offset = offsetof(struct recv_pdesc, desclist[i + 1]);
-
-		rdesc->next = ether->rdesc_phys + offset;
-		rdesc->sl = RX_OWEN_DMA;
-		rdesc->buffer = ether->rdesc_phys +
-			offsetof(struct recv_pdesc, recv_buf[i]);
-	  }
-
-	ether->start_rx_ptr = ether->rdesc_phys;
-
-	return 0;
-}
-
-static void w90p910_set_fifo_threshold(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = TXTHD | BLENGTH;
-	__raw_writel(val, ether->reg + REG_FFTCR);
-}
-
-static void w90p910_return_default_idle(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = __raw_readl(ether->reg + REG_MCMDR);
-	val |= SWR;
-	__raw_writel(val, ether->reg + REG_MCMDR);
-}
-
-static void w90p910_trigger_rx(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	__raw_writel(ENSTART, ether->reg + REG_RSDR);
-}
-
-static void w90p910_trigger_tx(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	__raw_writel(ENSTART, ether->reg + REG_TSDR);
-}
-
-static void w90p910_enable_mac_interrupt(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = ENTXINTR | ENRXINTR | ENRXGD | ENTXCP;
-	val |= ENTXBERR | ENRXBERR | ENTXABT;
-
-	__raw_writel(val, ether->reg + REG_MIEN);
-}
-
-static void w90p910_get_and_clear_int(struct net_device *dev,
-							unsigned int *val)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	*val = __raw_readl(ether->reg + REG_MISTA);
-	__raw_writel(*val, ether->reg + REG_MISTA);
-}
-
-static void w90p910_set_global_maccmd(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = __raw_readl(ether->reg + REG_MCMDR);
-	val |= MCMDR_SPCRC | MCMDR_ENMDC | MCMDR_ACP | ENMDC;
-	__raw_writel(val, ether->reg + REG_MCMDR);
-}
-
-static void w90p910_enable_cam(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	w90p910_write_cam(dev, CAM0, dev->dev_addr);
-
-	val = __raw_readl(ether->reg + REG_CAMEN);
-	val |= CAM0EN;
-	__raw_writel(val, ether->reg + REG_CAMEN);
-}
-
-static void w90p910_enable_cam_command(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = CAMCMR_ECMP | CAMCMR_ABP | CAMCMR_AMP;
-	__raw_writel(val, ether->reg + REG_CAMCMR);
-}
-
-static void w90p910_enable_tx(struct net_device *dev, unsigned int enable)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = __raw_readl(ether->reg + REG_MCMDR);
-
-	if (enable)
-		val |= MCMDR_TXON;
-	else
-		val &= ~MCMDR_TXON;
-
-	__raw_writel(val, ether->reg + REG_MCMDR);
-}
-
-static void w90p910_enable_rx(struct net_device *dev, unsigned int enable)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	unsigned int val;
-
-	val = __raw_readl(ether->reg + REG_MCMDR);
-
-	if (enable)
-		val |= MCMDR_RXON;
-	else
-		val &= ~MCMDR_RXON;
-
-	__raw_writel(val, ether->reg + REG_MCMDR);
-}
-
-static void w90p910_set_curdest(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	__raw_writel(ether->start_rx_ptr, ether->reg + REG_RXDLSA);
-	__raw_writel(ether->start_tx_ptr, ether->reg + REG_TXDLSA);
-}
-
-static void w90p910_reset_mac(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	w90p910_enable_tx(dev, 0);
-	w90p910_enable_rx(dev, 0);
-	w90p910_set_fifo_threshold(dev);
-	w90p910_return_default_idle(dev);
-
-	if (!netif_queue_stopped(dev))
-		netif_stop_queue(dev);
-
-	w90p910_init_desc(dev);
-
-	dev->trans_start = jiffies; /* prevent tx timeout */
-	ether->cur_tx = 0x0;
-	ether->finish_tx = 0x0;
-	ether->cur_rx = 0x0;
-
-	w90p910_set_curdest(dev);
-	w90p910_enable_cam(dev);
-	w90p910_enable_cam_command(dev);
-	w90p910_enable_mac_interrupt(dev);
-	w90p910_enable_tx(dev, 1);
-	w90p910_enable_rx(dev, 1);
-	w90p910_trigger_tx(dev);
-	w90p910_trigger_rx(dev);
-
-	dev->trans_start = jiffies; /* prevent tx timeout */
-
-	if (netif_queue_stopped(dev))
-		netif_wake_queue(dev);
-}
-
-static void w90p910_mdio_write(struct net_device *dev,
-					int phy_id, int reg, int data)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct platform_device *pdev;
-	unsigned int val, i;
-
-	pdev = ether->pdev;
-
-	__raw_writel(data, ether->reg + REG_MIID);
-
-	val = (phy_id << 0x08) | reg;
-	val |= PHYBUSY | PHYWR | MDCCR_VAL;
-	__raw_writel(val, ether->reg + REG_MIIDA);
-
-	for (i = 0; i < DELAY; i++) {
-		if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
-			break;
-	}
-
-	if (i == DELAY)
-		dev_warn(&pdev->dev, "mdio write timed out\n");
-}
-
-static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct platform_device *pdev;
-	unsigned int val, i, data;
-
-	pdev = ether->pdev;
-
-	val = (phy_id << 0x08) | reg;
-	val |= PHYBUSY | MDCCR_VAL;
-	__raw_writel(val, ether->reg + REG_MIIDA);
-
-	for (i = 0; i < DELAY; i++) {
-		if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
-			break;
-	}
-
-	if (i == DELAY) {
-		dev_warn(&pdev->dev, "mdio read timed out\n");
-		data = 0xffff;
-	} else {
-		data = __raw_readl(ether->reg + REG_MIID);
-	}
-
-	return data;
-}
-
-static int w90p910_set_mac_address(struct net_device *dev, void *addr)
-{
-	struct sockaddr *address = addr;
-
-	if (!is_valid_ether_addr(address->sa_data))
-		return -EADDRNOTAVAIL;
-
-	memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
-	w90p910_write_cam(dev, CAM0, dev->dev_addr);
-
-	return 0;
-}
-
-static int w90p910_ether_close(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct platform_device *pdev;
-
-	pdev = ether->pdev;
-
-	dma_free_coherent(&pdev->dev, sizeof(struct recv_pdesc),
-					ether->rdesc, ether->rdesc_phys);
-	dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
-					ether->tdesc, ether->tdesc_phys);
-
-	netif_stop_queue(dev);
-
-	del_timer_sync(&ether->check_timer);
-	clk_disable(ether->rmiiclk);
-	clk_disable(ether->clk);
-
-	free_irq(ether->txirq, dev);
-	free_irq(ether->rxirq, dev);
-
-	return 0;
-}
-
-static struct net_device_stats *w90p910_ether_stats(struct net_device *dev)
-{
-	struct w90p910_ether *ether;
-
-	ether = netdev_priv(dev);
-
-	return &ether->stats;
-}
-
-static int w90p910_send_frame(struct net_device *dev,
-					unsigned char *data, int length)
-{
-	struct w90p910_ether *ether;
-	struct w90p910_txbd *txbd;
-	struct platform_device *pdev;
-	unsigned char *buffer;
-
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	txbd = &ether->tdesc->desclist[ether->cur_tx];
-	buffer = ether->tdesc->tran_buf[ether->cur_tx];
-
-	if (length > 1514) {
-		dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
-		length = 1514;
-	}
-
-	txbd->sl = length & 0xFFFF;
-
-	memcpy(buffer, data, length);
-
-	txbd->mode = TX_OWEN_DMA | PADDINGMODE | CRCMODE | MACTXINTEN;
-
-	w90p910_enable_tx(dev, 1);
-
-	w90p910_trigger_tx(dev);
-
-	if (++ether->cur_tx >= TX_DESC_SIZE)
-		ether->cur_tx = 0;
-
-	txbd = &ether->tdesc->desclist[ether->cur_tx];
-
-	if (txbd->mode & TX_OWEN_DMA)
-		netif_stop_queue(dev);
-
-	return 0;
-}
-
-static int w90p910_ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	if (!(w90p910_send_frame(dev, skb->data, skb->len))) {
-		ether->skb = skb;
-		dev_kfree_skb_irq(skb);
-		return 0;
-	}
-	return -EAGAIN;
-}
-
-static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
-{
-	struct w90p910_ether *ether;
-	struct w90p910_txbd  *txbd;
-	struct platform_device *pdev;
-	struct net_device *dev;
-	unsigned int cur_entry, entry, status;
-
-	dev = dev_id;
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	w90p910_get_and_clear_int(dev, &status);
-
-	cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
-
-	entry = ether->tdesc_phys +
-		offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
-
-	while (entry != cur_entry) {
-		txbd = &ether->tdesc->desclist[ether->finish_tx];
-
-		if (++ether->finish_tx >= TX_DESC_SIZE)
-			ether->finish_tx = 0;
-
-		if (txbd->sl & TXDS_TXCP) {
-			ether->stats.tx_packets++;
-			ether->stats.tx_bytes += txbd->sl & 0xFFFF;
-		} else {
-			ether->stats.tx_errors++;
-		}
-
-		txbd->sl = 0x0;
-		txbd->mode = 0x0;
-
-		if (netif_queue_stopped(dev))
-			netif_wake_queue(dev);
-
-		entry = ether->tdesc_phys +
-			offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
-	}
-
-	if (status & MISTA_EXDEF) {
-		dev_err(&pdev->dev, "emc defer exceed interrupt\n");
-	} else if (status & MISTA_TXBERR) {
-		dev_err(&pdev->dev, "emc bus error interrupt\n");
-		w90p910_reset_mac(dev);
-	} else if (status & MISTA_TDU) {
-		if (netif_queue_stopped(dev))
-			netif_wake_queue(dev);
-	}
-
-	return IRQ_HANDLED;
-}
-
-static void netdev_rx(struct net_device *dev)
-{
-	struct w90p910_ether *ether;
-	struct w90p910_rxbd *rxbd;
-	struct platform_device *pdev;
-	struct sk_buff *skb;
-	unsigned char *data;
-	unsigned int length, status, val, entry;
-
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	rxbd = &ether->rdesc->desclist[ether->cur_rx];
-
-	do {
-		val = __raw_readl(ether->reg + REG_CRXDSA);
-
-		entry = ether->rdesc_phys +
-			offsetof(struct recv_pdesc, desclist[ether->cur_rx]);
-
-		if (val == entry)
-			break;
-
-		status = rxbd->sl;
-		length = status & 0xFFFF;
-
-		if (status & RXDS_RXGD) {
-			data = ether->rdesc->recv_buf[ether->cur_rx];
-			skb = dev_alloc_skb(length+2);
-			if (!skb) {
-				dev_err(&pdev->dev, "get skb buffer error\n");
-				ether->stats.rx_dropped++;
-				return;
-			}
-
-			skb_reserve(skb, 2);
-			skb_put(skb, length);
-			skb_copy_to_linear_data(skb, data, length);
-			skb->protocol = eth_type_trans(skb, dev);
-			ether->stats.rx_packets++;
-			ether->stats.rx_bytes += length;
-			netif_rx(skb);
-		} else {
-			ether->stats.rx_errors++;
-
-			if (status & RXDS_RP) {
-				dev_err(&pdev->dev, "rx runt err\n");
-				ether->stats.rx_length_errors++;
-			} else if (status & RXDS_CRCE) {
-				dev_err(&pdev->dev, "rx crc err\n");
-				ether->stats.rx_crc_errors++;
-			} else if (status & RXDS_ALIE) {
-				dev_err(&pdev->dev, "rx aligment err\n");
-				ether->stats.rx_frame_errors++;
-			} else if (status & RXDS_PTLE) {
-				dev_err(&pdev->dev, "rx longer err\n");
-				ether->stats.rx_over_errors++;
-			}
-		}
-
-		rxbd->sl = RX_OWEN_DMA;
-		rxbd->reserved = 0x0;
-
-		if (++ether->cur_rx >= RX_DESC_SIZE)
-			ether->cur_rx = 0;
-
-		rxbd = &ether->rdesc->desclist[ether->cur_rx];
-
-	} while (1);
-}
-
-static irqreturn_t w90p910_rx_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev;
-	struct w90p910_ether  *ether;
-	struct platform_device *pdev;
-	unsigned int status;
-
-	dev = dev_id;
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	w90p910_get_and_clear_int(dev, &status);
-
-	if (status & MISTA_RDU) {
-		netdev_rx(dev);
-		w90p910_trigger_rx(dev);
-
-		return IRQ_HANDLED;
-	} else if (status & MISTA_RXBERR) {
-		dev_err(&pdev->dev, "emc rx bus error\n");
-		w90p910_reset_mac(dev);
-	}
-
-	netdev_rx(dev);
-	return IRQ_HANDLED;
-}
-
-static int w90p910_ether_open(struct net_device *dev)
-{
-	struct w90p910_ether *ether;
-	struct platform_device *pdev;
-
-	ether = netdev_priv(dev);
-	pdev = ether->pdev;
-
-	w90p910_reset_mac(dev);
-	w90p910_set_fifo_threshold(dev);
-	w90p910_set_curdest(dev);
-	w90p910_enable_cam(dev);
-	w90p910_enable_cam_command(dev);
-	w90p910_enable_mac_interrupt(dev);
-	w90p910_set_global_maccmd(dev);
-	w90p910_enable_rx(dev, 1);
-
-	clk_enable(ether->rmiiclk);
-	clk_enable(ether->clk);
-
-	ether->rx_packets = 0x0;
-	ether->rx_bytes = 0x0;
-
-	if (request_irq(ether->txirq, w90p910_tx_interrupt,
-						0x0, pdev->name, dev)) {
-		dev_err(&pdev->dev, "register irq tx failed\n");
-		return -EAGAIN;
-	}
-
-	if (request_irq(ether->rxirq, w90p910_rx_interrupt,
-						0x0, pdev->name, dev)) {
-		dev_err(&pdev->dev, "register irq rx failed\n");
-		free_irq(ether->txirq, dev);
-		return -EAGAIN;
-	}
-
-	mod_timer(&ether->check_timer, jiffies + msecs_to_jiffies(1000));
-	netif_start_queue(dev);
-	w90p910_trigger_rx(dev);
-
-	dev_info(&pdev->dev, "%s is OPENED\n", dev->name);
-
-	return 0;
-}
-
-static void w90p910_ether_set_multicast_list(struct net_device *dev)
-{
-	struct w90p910_ether *ether;
-	unsigned int rx_mode;
-
-	ether = netdev_priv(dev);
-
-	if (dev->flags & IFF_PROMISC)
-		rx_mode = CAMCMR_AUP | CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
-	else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
-		rx_mode = CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
-	else
-		rx_mode = CAMCMR_ECMP | CAMCMR_ABP;
-	__raw_writel(rx_mode, ether->reg + REG_CAMCMR);
-}
-
-static int w90p910_ether_ioctl(struct net_device *dev,
-						struct ifreq *ifr, int cmd)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct mii_ioctl_data *data = if_mii(ifr);
-
-	return generic_mii_ioctl(&ether->mii, data, cmd, NULL);
-}
-
-static void w90p910_get_drvinfo(struct net_device *dev,
-					struct ethtool_drvinfo *info)
-{
-	strcpy(info->driver, DRV_MODULE_NAME);
-	strcpy(info->version, DRV_MODULE_VERSION);
-}
-
-static int w90p910_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	return mii_ethtool_gset(&ether->mii, cmd);
-}
-
-static int w90p910_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	return mii_ethtool_sset(&ether->mii, cmd);
-}
-
-static int w90p910_nway_reset(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	return mii_nway_restart(&ether->mii);
-}
-
-static u32 w90p910_get_link(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	return mii_link_ok(&ether->mii);
-}
-
-static const struct ethtool_ops w90p910_ether_ethtool_ops = {
-	.get_settings	= w90p910_get_settings,
-	.set_settings	= w90p910_set_settings,
-	.get_drvinfo	= w90p910_get_drvinfo,
-	.nway_reset	= w90p910_nway_reset,
-	.get_link	= w90p910_get_link,
-};
-
-static const struct net_device_ops w90p910_ether_netdev_ops = {
-	.ndo_open		= w90p910_ether_open,
-	.ndo_stop		= w90p910_ether_close,
-	.ndo_start_xmit		= w90p910_ether_start_xmit,
-	.ndo_get_stats		= w90p910_ether_stats,
-	.ndo_set_multicast_list	= w90p910_ether_set_multicast_list,
-	.ndo_set_mac_address	= w90p910_set_mac_address,
-	.ndo_do_ioctl		= w90p910_ether_ioctl,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_change_mtu		= eth_change_mtu,
-};
-
-static void __init get_mac_address(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-	struct platform_device *pdev;
-	char addr[6];
-
-	pdev = ether->pdev;
-
-	addr[0] = 0x00;
-	addr[1] = 0x02;
-	addr[2] = 0xac;
-	addr[3] = 0x55;
-	addr[4] = 0x88;
-	addr[5] = 0xa8;
-
-	if (is_valid_ether_addr(addr))
-		memcpy(dev->dev_addr, &addr, 0x06);
-	else
-		dev_err(&pdev->dev, "invalid mac address\n");
-}
-
-static int w90p910_ether_setup(struct net_device *dev)
-{
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	ether_setup(dev);
-	dev->netdev_ops = &w90p910_ether_netdev_ops;
-	dev->ethtool_ops = &w90p910_ether_ethtool_ops;
-
-	dev->tx_queue_len = 16;
-	dev->dma = 0x0;
-	dev->watchdog_timeo = TX_TIMEOUT;
-
-	get_mac_address(dev);
-
-	ether->cur_tx = 0x0;
-	ether->cur_rx = 0x0;
-	ether->finish_tx = 0x0;
-	ether->linkflag = 0x0;
-	ether->mii.phy_id = 0x01;
-	ether->mii.phy_id_mask = 0x1f;
-	ether->mii.reg_num_mask = 0x1f;
-	ether->mii.dev = dev;
-	ether->mii.mdio_read = w90p910_mdio_read;
-	ether->mii.mdio_write = w90p910_mdio_write;
-
-	setup_timer(&ether->check_timer, w90p910_check_link,
-						(unsigned long)dev);
-
-	return 0;
-}
-
-static int __devinit w90p910_ether_probe(struct platform_device *pdev)
-{
-	struct w90p910_ether *ether;
-	struct net_device *dev;
-	int error;
-
-	dev = alloc_etherdev(sizeof(struct w90p910_ether));
-	if (!dev)
-		return -ENOMEM;
-
-	ether = netdev_priv(dev);
-
-	ether->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (ether->res == NULL) {
-		dev_err(&pdev->dev, "failed to get I/O memory\n");
-		error = -ENXIO;
-		goto failed_free;
-	}
-
-	if (!request_mem_region(ether->res->start,
-				resource_size(ether->res), pdev->name)) {
-		dev_err(&pdev->dev, "failed to request I/O memory\n");
-		error = -EBUSY;
-		goto failed_free;
-	}
-
-	ether->reg = ioremap(ether->res->start, resource_size(ether->res));
-	if (ether->reg == NULL) {
-		dev_err(&pdev->dev, "failed to remap I/O memory\n");
-		error = -ENXIO;
-		goto failed_free_mem;
-	}
-
-	ether->txirq = platform_get_irq(pdev, 0);
-	if (ether->txirq < 0) {
-		dev_err(&pdev->dev, "failed to get ether tx irq\n");
-		error = -ENXIO;
-		goto failed_free_io;
-	}
-
-	ether->rxirq = platform_get_irq(pdev, 1);
-	if (ether->rxirq < 0) {
-		dev_err(&pdev->dev, "failed to get ether rx irq\n");
-		error = -ENXIO;
-		goto failed_free_txirq;
-	}
-
-	platform_set_drvdata(pdev, dev);
-
-	ether->clk = clk_get(&pdev->dev, NULL);
-	if (IS_ERR(ether->clk)) {
-		dev_err(&pdev->dev, "failed to get ether clock\n");
-		error = PTR_ERR(ether->clk);
-		goto failed_free_rxirq;
-	}
-
-	ether->rmiiclk = clk_get(&pdev->dev, "RMII");
-	if (IS_ERR(ether->rmiiclk)) {
-		dev_err(&pdev->dev, "failed to get ether clock\n");
-		error = PTR_ERR(ether->rmiiclk);
-		goto failed_put_clk;
-	}
-
-	ether->pdev = pdev;
-
-	w90p910_ether_setup(dev);
-
-	error = register_netdev(dev);
-	if (error != 0) {
-		dev_err(&pdev->dev, "Regiter EMC w90p910 FAILED\n");
-		error = -ENODEV;
-		goto failed_put_rmiiclk;
-	}
-
-	return 0;
-failed_put_rmiiclk:
-	clk_put(ether->rmiiclk);
-failed_put_clk:
-	clk_put(ether->clk);
-failed_free_rxirq:
-	free_irq(ether->rxirq, pdev);
-	platform_set_drvdata(pdev, NULL);
-failed_free_txirq:
-	free_irq(ether->txirq, pdev);
-failed_free_io:
-	iounmap(ether->reg);
-failed_free_mem:
-	release_mem_region(ether->res->start, resource_size(ether->res));
-failed_free:
-	free_netdev(dev);
-	return error;
-}
-
-static int __devexit w90p910_ether_remove(struct platform_device *pdev)
-{
-	struct net_device *dev = platform_get_drvdata(pdev);
-	struct w90p910_ether *ether = netdev_priv(dev);
-
-	unregister_netdev(dev);
-
-	clk_put(ether->rmiiclk);
-	clk_put(ether->clk);
-
-	iounmap(ether->reg);
-	release_mem_region(ether->res->start, resource_size(ether->res));
-
-	free_irq(ether->txirq, dev);
-	free_irq(ether->rxirq, dev);
-
-	del_timer_sync(&ether->check_timer);
-	platform_set_drvdata(pdev, NULL);
-
-	free_netdev(dev);
-	return 0;
-}
-
-static struct platform_driver w90p910_ether_driver = {
-	.probe		= w90p910_ether_probe,
-	.remove		= __devexit_p(w90p910_ether_remove),
-	.driver		= {
-		.name	= "nuc900-emc",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init w90p910_ether_init(void)
-{
-	return platform_driver_register(&w90p910_ether_driver);
-}
-
-static void __exit w90p910_ether_exit(void)
-{
-	platform_driver_unregister(&w90p910_ether_driver);
-}
-
-module_init(w90p910_ether_init);
-module_exit(w90p910_ether_exit);
-
-MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
-MODULE_DESCRIPTION("w90p910 MAC driver!");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:nuc900-emc");
-