nuvoton: Move the Nuvoton driver
authorJeff Kirsher <jeffrey.t.kirsher@intel.com>
Sun, 17 Jul 2011 07:20:45 +0000 (00:20 -0700)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Fri, 12 Aug 2011 10:40:59 +0000 (03:40 -0700)
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>
MAINTAINERS
drivers/net/arm/Kconfig
drivers/net/arm/Makefile
drivers/net/arm/w90p910_ether.c [deleted file]
drivers/net/ethernet/Kconfig
drivers/net/ethernet/Makefile
drivers/net/ethernet/nuvoton/Kconfig [new file with mode: 0644]
drivers/net/ethernet/nuvoton/Makefile [new file with mode: 0644]
drivers/net/ethernet/nuvoton/w90p910_ether.c [new file with mode: 0644]

index ee4ebb470122b83af46e62bf195cc746809760f8..d31fd9ed52621eeb4312d97ba503bc6ba6f4dfa2 100644 (file)
@@ -1127,7 +1127,7 @@ F:        arch/arm/mach-nuc93x/
 F:     drivers/input/keyboard/w90p910_keypad.c
 F:     drivers/input/touchscreen/w90p910_ts.c
 F:     drivers/watchdog/nuc900_wdt.c
-F:     drivers/net/arm/w90p910_ether.c
+F:     drivers/net/ethernet/nuvoton/w90p910_ether.c
 F:     drivers/mtd/nand/nuc900_nand.c
 F:     drivers/rtc/rtc-nuc900.c
 F:     drivers/spi/spi_nuc900.c
index fc94b4bd65f715d8d86268b42d7f418b7f89342f..57d16b91d102c28d2670f95036b212518af16663 100644 (file)
@@ -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.
index 462b3a4fe70a184ee2bcddd1fd2e790a1bf81395..fc0f85c53a7ef0885258886a594bc1ccd61c5275 100644 (file)
@@ -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 (file)
index bfea499..0000000
+++ /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");
-
index ff0740816543b407e15d5ef7a0e85ac3176a7970..3893065d4f8f9e554b00a4672341f7251b25fd19 100644 (file)
@@ -37,6 +37,7 @@ source "drivers/net/ethernet/micrel/Kconfig"
 source "drivers/net/ethernet/myricom/Kconfig"
 source "drivers/net/ethernet/natsemi/Kconfig"
 source "drivers/net/ethernet/8390/Kconfig"
+source "drivers/net/ethernet/nuvoton/Kconfig"
 source "drivers/net/ethernet/oki-semi/Kconfig"
 source "drivers/net/ethernet/pasemi/Kconfig"
 source "drivers/net/ethernet/qlogic/Kconfig"
index 3a17413a3d95e6e9b18a47a3285ef6c8e7886be7..e1f0b9419a04a2d0314e3f1ea4870788b732ed48 100644 (file)
@@ -28,6 +28,7 @@ obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
 obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/
 obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/
 obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
+obj-$(CONFIG_NET_VENDOR_NUVOTON) += nuvoton/
 obj-$(CONFIG_NET_VENDOR_OKI) += oki-semi/
 obj-$(CONFIG_NET_VENDOR_PASEMI) += pasemi/
 obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/
diff --git a/drivers/net/ethernet/nuvoton/Kconfig b/drivers/net/ethernet/nuvoton/Kconfig
new file mode 100644 (file)
index 0000000..3b91c3b
--- /dev/null
@@ -0,0 +1,29 @@
+#
+# Nuvoton network device configuration
+#
+
+config NET_VENDOR_NUVOTON
+       bool "Nuvoton devices"
+       depends on ARM && ARCH_W90X900
+       ---help---
+         If you have a network (Ethernet) card belonging to this class, say Y
+         and read the Ethernet-HOWTO, available from
+         <http://www.tldp.org/docs.html#howto>.
+
+         Note that the answer to this question doesn't directly affect the
+         kernel: saying N will just cause the configurator to skip all
+         the questions about Nuvoton cards. If you say Y, you will be asked
+         for your specific card in the following questions.
+
+if NET_VENDOR_NUVOTON
+
+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.
+
+endif # NET_VENDOR_NUVOTON
diff --git a/drivers/net/ethernet/nuvoton/Makefile b/drivers/net/ethernet/nuvoton/Makefile
new file mode 100644 (file)
index 0000000..171aa04
--- /dev/null
@@ -0,0 +1,5 @@
+#
+# Makefile for the Nuvoton network device drivers.
+#
+
+obj-$(CONFIG_W90P910_ETH) += w90p910_ether.o
diff --git a/drivers/net/ethernet/nuvoton/w90p910_ether.c b/drivers/net/ethernet/nuvoton/w90p910_ether.c
new file mode 100644 (file)
index 0000000..bfea499
--- /dev/null
@@ -0,0 +1,1123 @@
+/*
+ * 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");
+