net: remove w90p910-ether driver
authorArnd Bergmann <arnd@arndb.de>
Fri, 9 Aug 2019 20:27:41 +0000 (22:27 +0200)
committerArnd Bergmann <arnd@arndb.de>
Wed, 4 Sep 2019 15:57:52 +0000 (17:57 +0200)
The ARM w90x900 platform is getting removed, so this driver is obsolete.

Link: https://lore.kernel.org/r/20190809202749.742267-14-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
drivers/net/ethernet/Kconfig
drivers/net/ethernet/Makefile
drivers/net/ethernet/nuvoton/Kconfig [deleted file]
drivers/net/ethernet/nuvoton/Makefile [deleted file]
drivers/net/ethernet/nuvoton/w90p910_ether.c [deleted file]

index 93a2d4deb27c0b90c7c9ec1887e59f30ad0b37b7..dc9dee55976b964adc0da017ee6738d79efed599 100644 (file)
@@ -151,7 +151,6 @@ config NET_NETX
          To compile this driver as a module, choose M here. The module
          will be called netx-eth.
 
-source "drivers/net/ethernet/nuvoton/Kconfig"
 source "drivers/net/ethernet/nvidia/Kconfig"
 source "drivers/net/ethernet/nxp/Kconfig"
 source "drivers/net/ethernet/oki-semi/Kconfig"
index fb9155cffcffb3f69a6947c9780eab20a60a3379..4bc3c95562bf1253cd71db2fca433f5b61ef1270 100644 (file)
@@ -65,7 +65,6 @@ obj-$(CONFIG_NET_VENDOR_NETERION) += neterion/
 obj-$(CONFIG_NET_VENDOR_NETRONOME) += netronome/
 obj-$(CONFIG_NET_VENDOR_NI) += ni/
 obj-$(CONFIG_NET_NETX) += netx-eth.o
-obj-$(CONFIG_NET_VENDOR_NUVOTON) += nuvoton/
 obj-$(CONFIG_NET_VENDOR_NVIDIA) += nvidia/
 obj-$(CONFIG_LPC_ENET) += nxp/
 obj-$(CONFIG_NET_VENDOR_OKI) += oki-semi/
diff --git a/drivers/net/ethernet/nuvoton/Kconfig b/drivers/net/ethernet/nuvoton/Kconfig
deleted file mode 100644 (file)
index 325e26c..0000000
+++ /dev/null
@@ -1,29 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Nuvoton network device configuration
-#
-
-config NET_VENDOR_NUVOTON
-       bool "Nuvoton devices"
-       default y
-       depends on ARM && ARCH_W90X900
-       ---help---
-         If you have a network (Ethernet) card belonging to this class, say Y.
-
-         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
deleted file mode 100644 (file)
index 66f6e72..0000000
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# 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
deleted file mode 100644 (file)
index 3d73970..0000000
+++ /dev/null
@@ -1,1082 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2008-2009 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.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 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(struct timer_list *t)
-{
-       struct w90p910_ether *ether = from_timer(ether, t, check_timer);
-       struct net_device *dev = ether->mii.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 = dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
-                                         &ether->tdesc_phys, GFP_KERNEL);
-       if (!ether->tdesc)
-               return -ENOMEM;
-
-       ether->rdesc = dma_alloc_coherent(&pdev->dev, sizeof(struct recv_pdesc),
-                                         &ether->rdesc_phys, GFP_KERNEL);
-       if (!ether->rdesc) {
-               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);
-
-       netif_trans_update(dev); /* 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);
-
-       netif_trans_update(dev); /* 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 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_consume_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) {
-                       dev->stats.tx_packets++;
-                       dev->stats.tx_bytes += txbd->sl & 0xFFFF;
-               } else {
-                       dev->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 = netdev_alloc_skb(dev, length + 2);
-                       if (!skb) {
-                               dev->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);
-                       dev->stats.rx_packets++;
-                       dev->stats.rx_bytes += length;
-                       netif_rx(skb);
-               } else {
-                       dev->stats.rx_errors++;
-
-                       if (status & RXDS_RP) {
-                               dev_err(&pdev->dev, "rx runt err\n");
-                               dev->stats.rx_length_errors++;
-                       } else if (status & RXDS_CRCE) {
-                               dev_err(&pdev->dev, "rx crc err\n");
-                               dev->stats.rx_crc_errors++;
-                       } else if (status & RXDS_ALIE) {
-                               dev_err(&pdev->dev, "rx alignment err\n");
-                               dev->stats.rx_frame_errors++;
-                       } else if (status & RXDS_PTLE) {
-                               dev_err(&pdev->dev, "rx longer err\n");
-                               dev->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)
-{
-       strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
-       strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
-}
-
-static int w90p910_get_link_ksettings(struct net_device *dev,
-                                     struct ethtool_link_ksettings *cmd)
-{
-       struct w90p910_ether *ether = netdev_priv(dev);
-
-       mii_ethtool_get_link_ksettings(&ether->mii, cmd);
-
-       return 0;
-}
-
-static int w90p910_set_link_ksettings(struct net_device *dev,
-                                     const struct ethtool_link_ksettings *cmd)
-{
-       struct w90p910_ether *ether = netdev_priv(dev);
-       return mii_ethtool_set_link_ksettings(&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_drvinfo    = w90p910_get_drvinfo,
-       .nway_reset     = w90p910_nway_reset,
-       .get_link       = w90p910_get_link,
-       .get_link_ksettings = w90p910_get_link_ksettings,
-       .set_link_ksettings = w90p910_set_link_ksettings,
-};
-
-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_set_rx_mode        = 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,
-};
-
-static void get_mac_address(struct net_device *dev)
-{
-       struct w90p910_ether *ether = netdev_priv(dev);
-       struct platform_device *pdev;
-       char addr[ETH_ALEN];
-
-       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, ETH_ALEN);
-       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);
-
-       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;
-
-       timer_setup(&ether->check_timer, w90p910_check_link, 0);
-
-       return 0;
-}
-
-static int 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_io;
-       }
-
-       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_io;
-       }
-
-       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, "Register 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_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 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));
-
-       del_timer_sync(&ether->check_timer);
-
-       free_netdev(dev);
-       return 0;
-}
-
-static struct platform_driver w90p910_ether_driver = {
-       .probe          = w90p910_ether_probe,
-       .remove         = w90p910_ether_remove,
-       .driver         = {
-               .name   = "nuc900-emc",
-       },
-};
-
-module_platform_driver(w90p910_ether_driver);
-
-MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
-MODULE_DESCRIPTION("w90p910 MAC driver!");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:nuc900-emc");
-