ftgmac100/ftmac100: Move the Faraday drivers

Move the Faraday driver into drivers/net/ethernet/faraday/ and
make the necessary Kconfig and Makefile changes.

CC: "Po-Yu Chuang" <ratbert@faraday-tech.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Po-Yu Chuang <ratbert@faraday-tech.com>

1 files changed, 0 insertions, 1365 deletions

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
deleted file mode 100644
index 54709af917e9..000000000000
--- a/drivers/net/ftgmac100.c
+++ /dev/null
@@ -1,1365 +0,0 @@
-/*
- * Faraday FTGMAC100 Gigabit Ethernet
- *
- * (C) Copyright 2009-2011 Faraday Technology
- * Po-Yu Chuang <ratbert@faraday-tech.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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
-
-#include <linux/dma-mapping.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/phy.h>
-#include <linux/platform_device.h>
-#include <net/ip.h>
-
-#include "ftgmac100.h"
-
-#define DRV_NAME	"ftgmac100"
-#define DRV_VERSION	"0.7"
-
-#define RX_QUEUE_ENTRIES	256	/* must be power of 2 */
-#define TX_QUEUE_ENTRIES	512	/* must be power of 2 */
-
-#define MAX_PKT_SIZE		1518
-#define RX_BUF_SIZE		PAGE_SIZE	/* must be smaller than 0x3fff */
-
-/******************************************************************************
- * private data
- *****************************************************************************/
-struct ftgmac100_descs {
-	struct ftgmac100_rxdes rxdes[RX_QUEUE_ENTRIES];
-	struct ftgmac100_txdes txdes[TX_QUEUE_ENTRIES];
-};
-
-struct ftgmac100 {
-	struct resource *res;
-	void __iomem *base;
-	int irq;
-
-	struct ftgmac100_descs *descs;
-	dma_addr_t descs_dma_addr;
-
-	unsigned int rx_pointer;
-	unsigned int tx_clean_pointer;
-	unsigned int tx_pointer;
-	unsigned int tx_pending;
-
-	spinlock_t tx_lock;
-
-	struct net_device *netdev;
-	struct device *dev;
-	struct napi_struct napi;
-
-	struct mii_bus *mii_bus;
-	int phy_irq[PHY_MAX_ADDR];
-	struct phy_device *phydev;
-	int old_speed;
-};
-
-static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv,
-				   struct ftgmac100_rxdes *rxdes, gfp_t gfp);
-
-/******************************************************************************
- * internal functions (hardware register access)
- *****************************************************************************/
-#define INT_MASK_ALL_ENABLED	(FTGMAC100_INT_RPKT_LOST	| \
-				 FTGMAC100_INT_XPKT_ETH		| \
-				 FTGMAC100_INT_XPKT_LOST	| \
-				 FTGMAC100_INT_AHB_ERR		| \
-				 FTGMAC100_INT_PHYSTS_CHG	| \
-				 FTGMAC100_INT_RPKT_BUF		| \
-				 FTGMAC100_INT_NO_RXBUF)
-
-static void ftgmac100_set_rx_ring_base(struct ftgmac100 *priv, dma_addr_t addr)
-{
-	iowrite32(addr, priv->base + FTGMAC100_OFFSET_RXR_BADR);
-}
-
-static void ftgmac100_set_rx_buffer_size(struct ftgmac100 *priv,
-		unsigned int size)
-{
-	size = FTGMAC100_RBSR_SIZE(size);
-	iowrite32(size, priv->base + FTGMAC100_OFFSET_RBSR);
-}
-
-static void ftgmac100_set_normal_prio_tx_ring_base(struct ftgmac100 *priv,
-						   dma_addr_t addr)
-{
-	iowrite32(addr, priv->base + FTGMAC100_OFFSET_NPTXR_BADR);
-}
-
-static void ftgmac100_txdma_normal_prio_start_polling(struct ftgmac100 *priv)
-{
-	iowrite32(1, priv->base + FTGMAC100_OFFSET_NPTXPD);
-}
-
-static int ftgmac100_reset_hw(struct ftgmac100 *priv)
-{
-	struct net_device *netdev = priv->netdev;
-	int i;
-
-	/* NOTE: reset clears all registers */
-	iowrite32(FTGMAC100_MACCR_SW_RST, priv->base + FTGMAC100_OFFSET_MACCR);
-	for (i = 0; i < 5; i++) {
-		unsigned int maccr;
-
-		maccr = ioread32(priv->base + FTGMAC100_OFFSET_MACCR);
-		if (!(maccr & FTGMAC100_MACCR_SW_RST))
-			return 0;
-
-		udelay(1000);
-	}
-
-	netdev_err(netdev, "software reset failed\n");
-	return -EIO;
-}
-
-static void ftgmac100_set_mac(struct ftgmac100 *priv, const unsigned char *mac)
-{
-	unsigned int maddr = mac[0] << 8 | mac[1];
-	unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
-
-	iowrite32(maddr, priv->base + FTGMAC100_OFFSET_MAC_MADR);
-	iowrite32(laddr, priv->base + FTGMAC100_OFFSET_MAC_LADR);
-}
-
-static void ftgmac100_init_hw(struct ftgmac100 *priv)
-{
-	/* setup ring buffer base registers */
-	ftgmac100_set_rx_ring_base(priv,
-				   priv->descs_dma_addr +
-				   offsetof(struct ftgmac100_descs, rxdes));
-	ftgmac100_set_normal_prio_tx_ring_base(priv,
-					       priv->descs_dma_addr +
-					       offsetof(struct ftgmac100_descs, txdes));
-
-	ftgmac100_set_rx_buffer_size(priv, RX_BUF_SIZE);
-
-	iowrite32(FTGMAC100_APTC_RXPOLL_CNT(1), priv->base + FTGMAC100_OFFSET_APTC);
-
-	ftgmac100_set_mac(priv, priv->netdev->dev_addr);
-}
-
-#define MACCR_ENABLE_ALL	(FTGMAC100_MACCR_TXDMA_EN	| \
-				 FTGMAC100_MACCR_RXDMA_EN	| \
-				 FTGMAC100_MACCR_TXMAC_EN	| \
-				 FTGMAC100_MACCR_RXMAC_EN	| \
-				 FTGMAC100_MACCR_FULLDUP	| \
-				 FTGMAC100_MACCR_CRC_APD	| \
-				 FTGMAC100_MACCR_RX_RUNT	| \
-				 FTGMAC100_MACCR_RX_BROADPKT)
-
-static void ftgmac100_start_hw(struct ftgmac100 *priv, int speed)
-{
-	int maccr = MACCR_ENABLE_ALL;
-
-	switch (speed) {
-	default:
-	case 10:
-		break;
-
-	case 100:
-		maccr |= FTGMAC100_MACCR_FAST_MODE;
-		break;
-
-	case 1000:
-		maccr |= FTGMAC100_MACCR_GIGA_MODE;
-		break;
-	}
-
-	iowrite32(maccr, priv->base + FTGMAC100_OFFSET_MACCR);
-}
-
-static void ftgmac100_stop_hw(struct ftgmac100 *priv)
-{
-	iowrite32(0, priv->base + FTGMAC100_OFFSET_MACCR);
-}
-
-/******************************************************************************
- * internal functions (receive descriptor)
- *****************************************************************************/
-static bool ftgmac100_rxdes_first_segment(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_FRS);
-}
-
-static bool ftgmac100_rxdes_last_segment(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_LRS);
-}
-
-static bool ftgmac100_rxdes_packet_ready(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RXPKT_RDY);
-}
-
-static void ftgmac100_rxdes_set_dma_own(struct ftgmac100_rxdes *rxdes)
-{
-	/* clear status bits */
-	rxdes->rxdes0 &= cpu_to_le32(FTGMAC100_RXDES0_EDORR);
-}
-
-static bool ftgmac100_rxdes_rx_error(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RX_ERR);
-}
-
-static bool ftgmac100_rxdes_crc_error(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_CRC_ERR);
-}
-
-static bool ftgmac100_rxdes_frame_too_long(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_FTL);
-}
-
-static bool ftgmac100_rxdes_runt(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RUNT);
-}
-
-static bool ftgmac100_rxdes_odd_nibble(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RX_ODD_NB);
-}
-
-static unsigned int ftgmac100_rxdes_data_length(struct ftgmac100_rxdes *rxdes)
-{
-	return le32_to_cpu(rxdes->rxdes0) & FTGMAC100_RXDES0_VDBC;
-}
-
-static bool ftgmac100_rxdes_multicast(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_MULTICAST);
-}
-
-static void ftgmac100_rxdes_set_end_of_ring(struct ftgmac100_rxdes *rxdes)
-{
-	rxdes->rxdes0 |= cpu_to_le32(FTGMAC100_RXDES0_EDORR);
-}
-
-static void ftgmac100_rxdes_set_dma_addr(struct ftgmac100_rxdes *rxdes,
-					 dma_addr_t addr)
-{
-	rxdes->rxdes3 = cpu_to_le32(addr);
-}
-
-static dma_addr_t ftgmac100_rxdes_get_dma_addr(struct ftgmac100_rxdes *rxdes)
-{
-	return le32_to_cpu(rxdes->rxdes3);
-}
-
-static bool ftgmac100_rxdes_is_tcp(struct ftgmac100_rxdes *rxdes)
-{
-	return (rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_PROT_MASK)) ==
-	       cpu_to_le32(FTGMAC100_RXDES1_PROT_TCPIP);
-}
-
-static bool ftgmac100_rxdes_is_udp(struct ftgmac100_rxdes *rxdes)
-{
-	return (rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_PROT_MASK)) ==
-	       cpu_to_le32(FTGMAC100_RXDES1_PROT_UDPIP);
-}
-
-static bool ftgmac100_rxdes_tcpcs_err(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_TCP_CHKSUM_ERR);
-}
-
-static bool ftgmac100_rxdes_udpcs_err(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_UDP_CHKSUM_ERR);
-}
-
-static bool ftgmac100_rxdes_ipcs_err(struct ftgmac100_rxdes *rxdes)
-{
-	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_IP_CHKSUM_ERR);
-}
-
-/*
- * rxdes2 is not used by hardware. We use it to keep track of page.
- * Since hardware does not touch it, we can skip cpu_to_le32()/le32_to_cpu().
- */
-static void ftgmac100_rxdes_set_page(struct ftgmac100_rxdes *rxdes, struct page *page)
-{
-	rxdes->rxdes2 = (unsigned int)page;
-}
-
-static struct page *ftgmac100_rxdes_get_page(struct ftgmac100_rxdes *rxdes)
-{
-	return (struct page *)rxdes->rxdes2;
-}
-
-/******************************************************************************
- * internal functions (receive)
- *****************************************************************************/
-static int ftgmac100_next_rx_pointer(int pointer)
-{
-	return (pointer + 1) & (RX_QUEUE_ENTRIES - 1);
-}
-
-static void ftgmac100_rx_pointer_advance(struct ftgmac100 *priv)
-{
-	priv->rx_pointer = ftgmac100_next_rx_pointer(priv->rx_pointer);
-}
-
-static struct ftgmac100_rxdes *ftgmac100_current_rxdes(struct ftgmac100 *priv)
-{
-	return &priv->descs->rxdes[priv->rx_pointer];
-}
-
-static struct ftgmac100_rxdes *
-ftgmac100_rx_locate_first_segment(struct ftgmac100 *priv)
-{
-	struct ftgmac100_rxdes *rxdes = ftgmac100_current_rxdes(priv);
-
-	while (ftgmac100_rxdes_packet_ready(rxdes)) {
-		if (ftgmac100_rxdes_first_segment(rxdes))
-			return rxdes;
-
-		ftgmac100_rxdes_set_dma_own(rxdes);
-		ftgmac100_rx_pointer_advance(priv);
-		rxdes = ftgmac100_current_rxdes(priv);
-	}
-
-	return NULL;
-}
-
-static bool ftgmac100_rx_packet_error(struct ftgmac100 *priv,
-				      struct ftgmac100_rxdes *rxdes)
-{
-	struct net_device *netdev = priv->netdev;
-	bool error = false;
-
-	if (unlikely(ftgmac100_rxdes_rx_error(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx err\n");
-
-		netdev->stats.rx_errors++;
-		error = true;
-	}
-
-	if (unlikely(ftgmac100_rxdes_crc_error(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx crc err\n");
-
-		netdev->stats.rx_crc_errors++;
-		error = true;
-	} else if (unlikely(ftgmac100_rxdes_ipcs_err(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx IP checksum err\n");
-
-		error = true;
-	}
-
-	if (unlikely(ftgmac100_rxdes_frame_too_long(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx frame too long\n");
-
-		netdev->stats.rx_length_errors++;
-		error = true;
-	} else if (unlikely(ftgmac100_rxdes_runt(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx runt\n");
-
-		netdev->stats.rx_length_errors++;
-		error = true;
-	} else if (unlikely(ftgmac100_rxdes_odd_nibble(rxdes))) {
-		if (net_ratelimit())
-			netdev_info(netdev, "rx odd nibble\n");
-
-		netdev->stats.rx_length_errors++;
-		error = true;
-	}
-
-	return error;
-}
-
-static void ftgmac100_rx_drop_packet(struct ftgmac100 *priv)
-{
-	struct net_device *netdev = priv->netdev;
-	struct ftgmac100_rxdes *rxdes = ftgmac100_current_rxdes(priv);
-	bool done = false;
-
-	if (net_ratelimit())
-		netdev_dbg(netdev, "drop packet %p\n", rxdes);
-
-	do {
-		if (ftgmac100_rxdes_last_segment(rxdes))
-			done = true;
-
-		ftgmac100_rxdes_set_dma_own(rxdes);
-		ftgmac100_rx_pointer_advance(priv);
-		rxdes = ftgmac100_current_rxdes(priv);
-	} while (!done && ftgmac100_rxdes_packet_ready(rxdes));
-
-	netdev->stats.rx_dropped++;
-}
-
-static bool ftgmac100_rx_packet(struct ftgmac100 *priv, int *processed)
-{
-	struct net_device *netdev = priv->netdev;
-	struct ftgmac100_rxdes *rxdes;
-	struct sk_buff *skb;
-	bool done = false;
-
-	rxdes = ftgmac100_rx_locate_first_segment(priv);
-	if (!rxdes)
-		return false;
-
-	if (unlikely(ftgmac100_rx_packet_error(priv, rxdes))) {
-		ftgmac100_rx_drop_packet(priv);
-		return true;
-	}
-
-	/* start processing */
-	skb = netdev_alloc_skb_ip_align(netdev, 128);
-	if (unlikely(!skb)) {
-		if (net_ratelimit())
-			netdev_err(netdev, "rx skb alloc failed\n");
-
-		ftgmac100_rx_drop_packet(priv);
-		return true;
-	}
-
-	if (unlikely(ftgmac100_rxdes_multicast(rxdes)))
-		netdev->stats.multicast++;
-
-	/*
-	 * It seems that HW does checksum incorrectly with fragmented packets,
-	 * so we are conservative here - if HW checksum error, let software do
-	 * the checksum again.
-	 */
-	if ((ftgmac100_rxdes_is_tcp(rxdes) && !ftgmac100_rxdes_tcpcs_err(rxdes)) ||
-	    (ftgmac100_rxdes_is_udp(rxdes) && !ftgmac100_rxdes_udpcs_err(rxdes)))
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
-
-	do {
-		dma_addr_t map = ftgmac100_rxdes_get_dma_addr(rxdes);
-		struct page *page = ftgmac100_rxdes_get_page(rxdes);
-		unsigned int size;
-
-		dma_unmap_page(priv->dev, map, RX_BUF_SIZE, DMA_FROM_DEVICE);
-
-		size = ftgmac100_rxdes_data_length(rxdes);
-		skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, 0, size);
-
-		skb->len += size;
-		skb->data_len += size;
-		skb->truesize += size;
-
-		if (ftgmac100_rxdes_last_segment(rxdes))
-			done = true;
-
-		ftgmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);
-
-		ftgmac100_rx_pointer_advance(priv);
-		rxdes = ftgmac100_current_rxdes(priv);
-	} while (!done);
-
-	__pskb_pull_tail(skb, min(skb->len, 64U));
-	skb->protocol = eth_type_trans(skb, netdev);
-
-	netdev->stats.rx_packets++;
-	netdev->stats.rx_bytes += skb->len;
-
-	/* push packet to protocol stack */
-	napi_gro_receive(&priv->napi, skb);
-
-	(*processed)++;
-	return true;
-}
-
-/******************************************************************************
- * internal functions (transmit descriptor)
- *****************************************************************************/
-static void ftgmac100_txdes_reset(struct ftgmac100_txdes *txdes)
-{
-	/* clear all except end of ring bit */
-	txdes->txdes0 &= cpu_to_le32(FTGMAC100_TXDES0_EDOTR);
-	txdes->txdes1 = 0;
-	txdes->txdes2 = 0;
-	txdes->txdes3 = 0;
-}
-
-static bool ftgmac100_txdes_owned_by_dma(struct ftgmac100_txdes *txdes)
-{
-	return txdes->txdes0 & cpu_to_le32(FTGMAC100_TXDES0_TXDMA_OWN);
-}
-
-static void ftgmac100_txdes_set_dma_own(struct ftgmac100_txdes *txdes)
-{
-	/*
-	 * Make sure dma own bit will not be set before any other
-	 * descriptor fields.
-	 */
-	wmb();
-	txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_TXDMA_OWN);
-}
-
-static void ftgmac100_txdes_set_end_of_ring(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_EDOTR);
-}
-
-static void ftgmac100_txdes_set_first_segment(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_FTS);
-}
-
-static void ftgmac100_txdes_set_last_segment(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_LTS);
-}
-
-static void ftgmac100_txdes_set_buffer_size(struct ftgmac100_txdes *txdes,
-					    unsigned int len)
-{
-	txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_TXBUF_SIZE(len));
-}
-
-static void ftgmac100_txdes_set_txint(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes1 |= cpu_to_le32(FTGMAC100_TXDES1_TXIC);
-}
-
-static void ftgmac100_txdes_set_tcpcs(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes1 |= cpu_to_le32(FTGMAC100_TXDES1_TCP_CHKSUM);
-}
-
-static void ftgmac100_txdes_set_udpcs(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes1 |= cpu_to_le32(FTGMAC100_TXDES1_UDP_CHKSUM);
-}
-
-static void ftgmac100_txdes_set_ipcs(struct ftgmac100_txdes *txdes)
-{
-	txdes->txdes1 |= cpu_to_le32(FTGMAC100_TXDES1_IP_CHKSUM);
-}
-
-static void ftgmac100_txdes_set_dma_addr(struct ftgmac100_txdes *txdes,
-					 dma_addr_t addr)
-{
-	txdes->txdes3 = cpu_to_le32(addr);
-}
-
-static dma_addr_t ftgmac100_txdes_get_dma_addr(struct ftgmac100_txdes *txdes)
-{
-	return le32_to_cpu(txdes->txdes3);
-}
-
-/*
- * txdes2 is not used by hardware. We use it to keep track of socket buffer.
- * Since hardware does not touch it, we can skip cpu_to_le32()/le32_to_cpu().
- */
-static void ftgmac100_txdes_set_skb(struct ftgmac100_txdes *txdes,
-				    struct sk_buff *skb)
-{
-	txdes->txdes2 = (unsigned int)skb;
-}
-
-static struct sk_buff *ftgmac100_txdes_get_skb(struct ftgmac100_txdes *txdes)
-{
-	return (struct sk_buff *)txdes->txdes2;
-}
-
-/******************************************************************************
- * internal functions (transmit)
- *****************************************************************************/
-static int ftgmac100_next_tx_pointer(int pointer)
-{
-	return (pointer + 1) & (TX_QUEUE_ENTRIES - 1);
-}
-
-static void ftgmac100_tx_pointer_advance(struct ftgmac100 *priv)
-{
-	priv->tx_pointer = ftgmac100_next_tx_pointer(priv->tx_pointer);
-}
-
-static void ftgmac100_tx_clean_pointer_advance(struct ftgmac100 *priv)
-{
-	priv->tx_clean_pointer = ftgmac100_next_tx_pointer(priv->tx_clean_pointer);
-}
-
-static struct ftgmac100_txdes *ftgmac100_current_txdes(struct ftgmac100 *priv)
-{
-	return &priv->descs->txdes[priv->tx_pointer];
-}
-
-static struct ftgmac100_txdes *
-ftgmac100_current_clean_txdes(struct ftgmac100 *priv)
-{
-	return &priv->descs->txdes[priv->tx_clean_pointer];
-}
-
-static bool ftgmac100_tx_complete_packet(struct ftgmac100 *priv)
-{
-	struct net_device *netdev = priv->netdev;
-	struct ftgmac100_txdes *txdes;
-	struct sk_buff *skb;
-	dma_addr_t map;
-
-	if (priv->tx_pending == 0)
-		return false;
-
-	txdes = ftgmac100_current_clean_txdes(priv);
-
-	if (ftgmac100_txdes_owned_by_dma(txdes))
-		return false;
-
-	skb = ftgmac100_txdes_get_skb(txdes);
-	map = ftgmac100_txdes_get_dma_addr(txdes);
-
-	netdev->stats.tx_packets++;
-	netdev->stats.tx_bytes += skb->len;
-
-	dma_unmap_single(priv->dev, map, skb_headlen(skb), DMA_TO_DEVICE);
-
-	dev_kfree_skb(skb);
-
-	ftgmac100_txdes_reset(txdes);
-
-	ftgmac100_tx_clean_pointer_advance(priv);
-
-	spin_lock(&priv->tx_lock);
-	priv->tx_pending--;
-	spin_unlock(&priv->tx_lock);
-	netif_wake_queue(netdev);
-
-	return true;
-}
-
-static void ftgmac100_tx_complete(struct ftgmac100 *priv)
-{
-	while (ftgmac100_tx_complete_packet(priv))
-		;
-}
-
-static int ftgmac100_xmit(struct ftgmac100 *priv, struct sk_buff *skb,
-			  dma_addr_t map)
-{
-	struct net_device *netdev = priv->netdev;
-	struct ftgmac100_txdes *txdes;
-	unsigned int len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
-
-	txdes = ftgmac100_current_txdes(priv);
-	ftgmac100_tx_pointer_advance(priv);
-
-	/* setup TX descriptor */
-	ftgmac100_txdes_set_skb(txdes, skb);
-	ftgmac100_txdes_set_dma_addr(txdes, map);
-	ftgmac100_txdes_set_buffer_size(txdes, len);
-
-	ftgmac100_txdes_set_first_segment(txdes);
-	ftgmac100_txdes_set_last_segment(txdes);
-	ftgmac100_txdes_set_txint(txdes);
-	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		__be16 protocol = skb->protocol;
-
-		if (protocol == cpu_to_be16(ETH_P_IP)) {
-			u8 ip_proto = ip_hdr(skb)->protocol;
-
-			ftgmac100_txdes_set_ipcs(txdes);
-			if (ip_proto == IPPROTO_TCP)
-				ftgmac100_txdes_set_tcpcs(txdes);
-			else if (ip_proto == IPPROTO_UDP)
-				ftgmac100_txdes_set_udpcs(txdes);
-		}
-	}
-
-	spin_lock(&priv->tx_lock);
-	priv->tx_pending++;
-	if (priv->tx_pending == TX_QUEUE_ENTRIES)
-		netif_stop_queue(netdev);
-
-	/* start transmit */
-	ftgmac100_txdes_set_dma_own(txdes);
-	spin_unlock(&priv->tx_lock);
-
-	ftgmac100_txdma_normal_prio_start_polling(priv);
-
-	return NETDEV_TX_OK;
-}
-
-/******************************************************************************
- * internal functions (buffer)
- *****************************************************************************/
-static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv,
-				   struct ftgmac100_rxdes *rxdes, gfp_t gfp)
-{
-	struct net_device *netdev = priv->netdev;
-	struct page *page;
-	dma_addr_t map;
-
-	page = alloc_page(gfp);
-	if (!page) {
-		if (net_ratelimit())
-			netdev_err(netdev, "failed to allocate rx page\n");
-		return -ENOMEM;
-	}
-
-	map = dma_map_page(priv->dev, page, 0, RX_BUF_SIZE, DMA_FROM_DEVICE);
-	if (unlikely(dma_mapping_error(priv->dev, map))) {
-		if (net_ratelimit())
-			netdev_err(netdev, "failed to map rx page\n");
-		__free_page(page);
-		return -ENOMEM;
-	}
-
-	ftgmac100_rxdes_set_page(rxdes, page);
-	ftgmac100_rxdes_set_dma_addr(rxdes, map);
-	ftgmac100_rxdes_set_dma_own(rxdes);
-	return 0;
-}
-
-static void ftgmac100_free_buffers(struct ftgmac100 *priv)
-{
-	int i;
-
-	for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
-		struct ftgmac100_rxdes *rxdes = &priv->descs->rxdes[i];
-		struct page *page = ftgmac100_rxdes_get_page(rxdes);
-		dma_addr_t map = ftgmac100_rxdes_get_dma_addr(rxdes);
-
-		if (!page)
-			continue;
-
-		dma_unmap_page(priv->dev, map, RX_BUF_SIZE, DMA_FROM_DEVICE);
-		__free_page(page);
-	}
-
-	for (i = 0; i < TX_QUEUE_ENTRIES; i++) {
-		struct ftgmac100_txdes *txdes = &priv->descs->txdes[i];
-		struct sk_buff *skb = ftgmac100_txdes_get_skb(txdes);
-		dma_addr_t map = ftgmac100_txdes_get_dma_addr(txdes);
-
-		if (!skb)
-			continue;
-
-		dma_unmap_single(priv->dev, map, skb_headlen(skb), DMA_TO_DEVICE);
-		dev_kfree_skb(skb);
-	}
-
-	dma_free_coherent(priv->dev, sizeof(struct ftgmac100_descs),
-			  priv->descs, priv->descs_dma_addr);
-}
-
-static int ftgmac100_alloc_buffers(struct ftgmac100 *priv)
-{
-	int i;
-
-	priv->descs = dma_alloc_coherent(priv->dev,
-					 sizeof(struct ftgmac100_descs),
-					 &priv->descs_dma_addr, GFP_KERNEL);
-	if (!priv->descs)
-		return -ENOMEM;
-
-	memset(priv->descs, 0, sizeof(struct ftgmac100_descs));
-
-	/* initialize RX ring */
-	ftgmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);
-
-	for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
-		struct ftgmac100_rxdes *rxdes = &priv->descs->rxdes[i];
-
-		if (ftgmac100_alloc_rx_page(priv, rxdes, GFP_KERNEL))
-			goto err;
-	}
-
-	/* initialize TX ring */
-	ftgmac100_txdes_set_end_of_ring(&priv->descs->txdes[TX_QUEUE_ENTRIES - 1]);
-	return 0;
-
-err:
-	ftgmac100_free_buffers(priv);
-	return -ENOMEM;
-}
-
-/******************************************************************************
- * internal functions (mdio)
- *****************************************************************************/
-static void ftgmac100_adjust_link(struct net_device *netdev)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-	struct phy_device *phydev = priv->phydev;
-	int ier;
-
-	if (phydev->speed == priv->old_speed)
-		return;
-
-	priv->old_speed = phydev->speed;
-
-	ier = ioread32(priv->base + FTGMAC100_OFFSET_IER);
-
-	/* disable all interrupts */
-	iowrite32(0, priv->base + FTGMAC100_OFFSET_IER);
-
-	netif_stop_queue(netdev);
-	ftgmac100_stop_hw(priv);
-
-	netif_start_queue(netdev);
-	ftgmac100_init_hw(priv);
-	ftgmac100_start_hw(priv, phydev->speed);
-
-	/* re-enable interrupts */
-	iowrite32(ier, priv->base + FTGMAC100_OFFSET_IER);
-}
-
-static int ftgmac100_mii_probe(struct ftgmac100 *priv)
-{
-	struct net_device *netdev = priv->netdev;
-	struct phy_device *phydev = NULL;
-	int i;
-
-	/* search for connect PHY device */
-	for (i = 0; i < PHY_MAX_ADDR; i++) {
-		struct phy_device *tmp = priv->mii_bus->phy_map[i];
-
-		if (tmp) {
-			phydev = tmp;
-			break;
-		}
-	}
-
-	/* now we are supposed to have a proper phydev, to attach to... */
-	if (!phydev) {
-		netdev_info(netdev, "%s: no PHY found\n", netdev->name);
-		return -ENODEV;
-	}
-
-	phydev = phy_connect(netdev, dev_name(&phydev->dev),
-			     &ftgmac100_adjust_link, 0,
-			     PHY_INTERFACE_MODE_GMII);
-
-	if (IS_ERR(phydev)) {
-		netdev_err(netdev, "%s: Could not attach to PHY\n", netdev->name);
-		return PTR_ERR(phydev);
-	}
-
-	priv->phydev = phydev;
-	return 0;
-}
-
-/******************************************************************************
- * struct mii_bus functions
- *****************************************************************************/
-static int ftgmac100_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
-{
-	struct net_device *netdev = bus->priv;
-	struct ftgmac100 *priv = netdev_priv(netdev);
-	unsigned int phycr;
-	int i;
-
-	phycr = ioread32(priv->base + FTGMAC100_OFFSET_PHYCR);
-
-	/* preserve MDC cycle threshold */
-	phycr &= FTGMAC100_PHYCR_MDC_CYCTHR_MASK;
-
-	phycr |= FTGMAC100_PHYCR_PHYAD(phy_addr) |
-		 FTGMAC100_PHYCR_REGAD(regnum) |
-		 FTGMAC100_PHYCR_MIIRD;
-
-	iowrite32(phycr, priv->base + FTGMAC100_OFFSET_PHYCR);
-
-	for (i = 0; i < 10; i++) {
-		phycr = ioread32(priv->base + FTGMAC100_OFFSET_PHYCR);
-
-		if ((phycr & FTGMAC100_PHYCR_MIIRD) == 0) {
-			int data;
-
-			data = ioread32(priv->base + FTGMAC100_OFFSET_PHYDATA);
-			return FTGMAC100_PHYDATA_MIIRDATA(data);
-		}
-
-		udelay(100);
-	}
-
-	netdev_err(netdev, "mdio read timed out\n");
-	return -EIO;
-}
-
-static int ftgmac100_mdiobus_write(struct mii_bus *bus, int phy_addr,
-				   int regnum, u16 value)
-{
-	struct net_device *netdev = bus->priv;
-	struct ftgmac100 *priv = netdev_priv(netdev);
-	unsigned int phycr;
-	int data;
-	int i;
-
-	phycr = ioread32(priv->base + FTGMAC100_OFFSET_PHYCR);
-
-	/* preserve MDC cycle threshold */
-	phycr &= FTGMAC100_PHYCR_MDC_CYCTHR_MASK;
-
-	phycr |= FTGMAC100_PHYCR_PHYAD(phy_addr) |
-		 FTGMAC100_PHYCR_REGAD(regnum) |
-		 FTGMAC100_PHYCR_MIIWR;
-
-	data = FTGMAC100_PHYDATA_MIIWDATA(value);
-
-	iowrite32(data, priv->base + FTGMAC100_OFFSET_PHYDATA);
-	iowrite32(phycr, priv->base + FTGMAC100_OFFSET_PHYCR);
-
-	for (i = 0; i < 10; i++) {
-		phycr = ioread32(priv->base + FTGMAC100_OFFSET_PHYCR);
-
-		if ((phycr & FTGMAC100_PHYCR_MIIWR) == 0)
-			return 0;
-
-		udelay(100);
-	}
-
-	netdev_err(netdev, "mdio write timed out\n");
-	return -EIO;
-}
-
-static int ftgmac100_mdiobus_reset(struct mii_bus *bus)
-{
-	return 0;
-}
-
-/******************************************************************************
- * struct ethtool_ops functions
- *****************************************************************************/
-static void ftgmac100_get_drvinfo(struct net_device *netdev,
-				  struct ethtool_drvinfo *info)
-{
-	strcpy(info->driver, DRV_NAME);
-	strcpy(info->version, DRV_VERSION);
-	strcpy(info->bus_info, dev_name(&netdev->dev));
-}
-
-static int ftgmac100_get_settings(struct net_device *netdev,
-				  struct ethtool_cmd *cmd)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-
-	return phy_ethtool_gset(priv->phydev, cmd);
-}
-
-static int ftgmac100_set_settings(struct net_device *netdev,
-				  struct ethtool_cmd *cmd)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-
-	return phy_ethtool_sset(priv->phydev, cmd);
-}
-
-static const struct ethtool_ops ftgmac100_ethtool_ops = {
-	.set_settings		= ftgmac100_set_settings,
-	.get_settings		= ftgmac100_get_settings,
-	.get_drvinfo		= ftgmac100_get_drvinfo,
-	.get_link		= ethtool_op_get_link,
-};
-
-/******************************************************************************
- * interrupt handler
- *****************************************************************************/
-static irqreturn_t ftgmac100_interrupt(int irq, void *dev_id)
-{
-	struct net_device *netdev = dev_id;
-	struct ftgmac100 *priv = netdev_priv(netdev);
-
-	if (likely(netif_running(netdev))) {
-		/* Disable interrupts for polling */
-		iowrite32(0, priv->base + FTGMAC100_OFFSET_IER);
-		napi_schedule(&priv->napi);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/******************************************************************************
- * struct napi_struct functions
- *****************************************************************************/
-static int ftgmac100_poll(struct napi_struct *napi, int budget)
-{
-	struct ftgmac100 *priv = container_of(napi, struct ftgmac100, napi);
-	struct net_device *netdev = priv->netdev;
-	unsigned int status;
-	bool completed = true;
-	int rx = 0;
-
-	status = ioread32(priv->base + FTGMAC100_OFFSET_ISR);
-	iowrite32(status, priv->base + FTGMAC100_OFFSET_ISR);
-
-	if (status & (FTGMAC100_INT_RPKT_BUF | FTGMAC100_INT_NO_RXBUF)) {
-		/*
-		 * FTGMAC100_INT_RPKT_BUF:
-		 *	RX DMA has received packets into RX buffer successfully
-		 *
-		 * FTGMAC100_INT_NO_RXBUF:
-		 *	RX buffer unavailable
-		 */
-		bool retry;
-
-		do {
-			retry = ftgmac100_rx_packet(priv, &rx);
-		} while (retry && rx < budget);
-
-		if (retry && rx == budget)
-			completed = false;
-	}
-
-	if (status & (FTGMAC100_INT_XPKT_ETH | FTGMAC100_INT_XPKT_LOST)) {
-		/*
-		 * FTGMAC100_INT_XPKT_ETH:
-		 *	packet transmitted to ethernet successfully
-		 *
-		 * FTGMAC100_INT_XPKT_LOST:
-		 *	packet transmitted to ethernet lost due to late
-		 *	collision or excessive collision
-		 */
-		ftgmac100_tx_complete(priv);
-	}
-
-	if (status & (FTGMAC100_INT_NO_RXBUF | FTGMAC100_INT_RPKT_LOST |
-		      FTGMAC100_INT_AHB_ERR | FTGMAC100_INT_PHYSTS_CHG)) {
-		if (net_ratelimit())
-			netdev_info(netdev, "[ISR] = 0x%x: %s%s%s%s\n", status,
-				    status & FTGMAC100_INT_NO_RXBUF ? "NO_RXBUF " : "",
-				    status & FTGMAC100_INT_RPKT_LOST ? "RPKT_LOST " : "",
-				    status & FTGMAC100_INT_AHB_ERR ? "AHB_ERR " : "",
-				    status & FTGMAC100_INT_PHYSTS_CHG ? "PHYSTS_CHG" : "");
-
-		if (status & FTGMAC100_INT_NO_RXBUF) {
-			/* RX buffer unavailable */
-			netdev->stats.rx_over_errors++;
-		}
-
-		if (status & FTGMAC100_INT_RPKT_LOST) {
-			/* received packet lost due to RX FIFO full */
-			netdev->stats.rx_fifo_errors++;
-		}
-	}
-
-	if (completed) {
-		napi_complete(napi);
-
-		/* enable all interrupts */
-		iowrite32(INT_MASK_ALL_ENABLED, priv->base + FTGMAC100_OFFSET_IER);
-	}
-
-	return rx;
-}
-
-/******************************************************************************
- * struct net_device_ops functions
- *****************************************************************************/
-static int ftgmac100_open(struct net_device *netdev)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-	int err;
-
-	err = ftgmac100_alloc_buffers(priv);
-	if (err) {
-		netdev_err(netdev, "failed to allocate buffers\n");
-		goto err_alloc;
-	}
-
-	err = request_irq(priv->irq, ftgmac100_interrupt, 0, netdev->name, netdev);
-	if (err) {
-		netdev_err(netdev, "failed to request irq %d\n", priv->irq);
-		goto err_irq;
-	}
-
-	priv->rx_pointer = 0;
-	priv->tx_clean_pointer = 0;
-	priv->tx_pointer = 0;
-	priv->tx_pending = 0;
-
-	err = ftgmac100_reset_hw(priv);
-	if (err)
-		goto err_hw;
-
-	ftgmac100_init_hw(priv);
-	ftgmac100_start_hw(priv, 10);
-
-	phy_start(priv->phydev);
-
-	napi_enable(&priv->napi);
-	netif_start_queue(netdev);
-
-	/* enable all interrupts */
-	iowrite32(INT_MASK_ALL_ENABLED, priv->base + FTGMAC100_OFFSET_IER);
-	return 0;
-
-err_hw:
-	free_irq(priv->irq, netdev);
-err_irq:
-	ftgmac100_free_buffers(priv);
-err_alloc:
-	return err;
-}
-
-static int ftgmac100_stop(struct net_device *netdev)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-
-	/* disable all interrupts */
-	iowrite32(0, priv->base + FTGMAC100_OFFSET_IER);
-
-	netif_stop_queue(netdev);
-	napi_disable(&priv->napi);
-	phy_stop(priv->phydev);
-
-	ftgmac100_stop_hw(priv);
-	free_irq(priv->irq, netdev);
-	ftgmac100_free_buffers(priv);
-
-	return 0;
-}
-
-static int ftgmac100_hard_start_xmit(struct sk_buff *skb,
-				     struct net_device *netdev)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-	dma_addr_t map;
-
-	if (unlikely(skb->len > MAX_PKT_SIZE)) {
-		if (net_ratelimit())
-			netdev_dbg(netdev, "tx packet too big\n");
-
-		netdev->stats.tx_dropped++;
-		dev_kfree_skb(skb);
-		return NETDEV_TX_OK;
-	}
-
-	map = dma_map_single(priv->dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE);
-	if (unlikely(dma_mapping_error(priv->dev, map))) {
-		/* drop packet */
-		if (net_ratelimit())
-			netdev_err(netdev, "map socket buffer failed\n");
-
-		netdev->stats.tx_dropped++;
-		dev_kfree_skb(skb);
-		return NETDEV_TX_OK;
-	}
-
-	return ftgmac100_xmit(priv, skb, map);
-}
-
-/* optional */
-static int ftgmac100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
-	struct ftgmac100 *priv = netdev_priv(netdev);
-
-	return phy_mii_ioctl(priv->phydev, ifr, cmd);
-}
-
-static const struct net_device_ops ftgmac100_netdev_ops = {
-	.ndo_open		= ftgmac100_open,
-	.ndo_stop		= ftgmac100_stop,
-	.ndo_start_xmit		= ftgmac100_hard_start_xmit,
-	.ndo_set_mac_address	= eth_mac_addr,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_do_ioctl		= ftgmac100_do_ioctl,
-};
-
-/******************************************************************************
- * struct platform_driver functions
- *****************************************************************************/
-static int ftgmac100_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	int irq;
-	struct net_device *netdev;
-	struct ftgmac100 *priv;
-	int err;
-	int i;
-
-	if (!pdev)
-		return -ENODEV;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENXIO;
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
-
-	/* setup net_device */
-	netdev = alloc_etherdev(sizeof(*priv));
-	if (!netdev) {
-		err = -ENOMEM;
-		goto err_alloc_etherdev;
-	}
-
-	SET_NETDEV_DEV(netdev, &pdev->dev);
-
-	SET_ETHTOOL_OPS(netdev, &ftgmac100_ethtool_ops);
-	netdev->netdev_ops = &ftgmac100_netdev_ops;
-	netdev->features = NETIF_F_IP_CSUM | NETIF_F_GRO;
-
-	platform_set_drvdata(pdev, netdev);
-
-	/* setup private data */
-	priv = netdev_priv(netdev);
-	priv->netdev = netdev;
-	priv->dev = &pdev->dev;
-
-	spin_lock_init(&priv->tx_lock);
-
-	/* initialize NAPI */
-	netif_napi_add(netdev, &priv->napi, ftgmac100_poll, 64);
-
-	/* map io memory */
-	priv->res = request_mem_region(res->start, resource_size(res),
-				       dev_name(&pdev->dev));
-	if (!priv->res) {
-		dev_err(&pdev->dev, "Could not reserve memory region\n");
-		err = -ENOMEM;
-		goto err_req_mem;
-	}
-
-	priv->base = ioremap(res->start, resource_size(res));
-	if (!priv->base) {
-		dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
-		err = -EIO;
-		goto err_ioremap;
-	}
-
-	priv->irq = irq;
-
-	/* initialize mdio bus */
-	priv->mii_bus = mdiobus_alloc();
-	if (!priv->mii_bus) {
-		err = -EIO;
-		goto err_alloc_mdiobus;
-	}
-
-	priv->mii_bus->name = "ftgmac100_mdio";
-	snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "ftgmac100_mii");
-
-	priv->mii_bus->priv = netdev;
-	priv->mii_bus->read = ftgmac100_mdiobus_read;
-	priv->mii_bus->write = ftgmac100_mdiobus_write;
-	priv->mii_bus->reset = ftgmac100_mdiobus_reset;
-	priv->mii_bus->irq = priv->phy_irq;
-
-	for (i = 0; i < PHY_MAX_ADDR; i++)
-		priv->mii_bus->irq[i] = PHY_POLL;
-
-	err = mdiobus_register(priv->mii_bus);
-	if (err) {
-		dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
-		goto err_register_mdiobus;
-	}
-
-	err = ftgmac100_mii_probe(priv);
-	if (err) {
-		dev_err(&pdev->dev, "MII Probe failed!\n");
-		goto err_mii_probe;
-	}
-
-	/* register network device */
-	err = register_netdev(netdev);
-	if (err) {
-		dev_err(&pdev->dev, "Failed to register netdev\n");
-		goto err_register_netdev;
-	}
-
-	netdev_info(netdev, "irq %d, mapped at %p\n", priv->irq, priv->base);
-
-	if (!is_valid_ether_addr(netdev->dev_addr)) {
-		random_ether_addr(netdev->dev_addr);
-		netdev_info(netdev, "generated random MAC address %pM\n",
-			    netdev->dev_addr);
-	}
-
-	return 0;
-
-err_register_netdev:
-	phy_disconnect(priv->phydev);
-err_mii_probe:
-	mdiobus_unregister(priv->mii_bus);
-err_register_mdiobus:
-	mdiobus_free(priv->mii_bus);
-err_alloc_mdiobus:
-	iounmap(priv->base);
-err_ioremap:
-	release_resource(priv->res);
-err_req_mem:
-	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
-	free_netdev(netdev);
-err_alloc_etherdev:
-	return err;
-}
-
-static int __exit ftgmac100_remove(struct platform_device *pdev)
-{
-	struct net_device *netdev;
-	struct ftgmac100 *priv;
-
-	netdev = platform_get_drvdata(pdev);
-	priv = netdev_priv(netdev);
-
-	unregister_netdev(netdev);
-
-	phy_disconnect(priv->phydev);
-	mdiobus_unregister(priv->mii_bus);
-	mdiobus_free(priv->mii_bus);
-
-	iounmap(priv->base);
-	release_resource(priv->res);
-
-	netif_napi_del(&priv->napi);
-	platform_set_drvdata(pdev, NULL);
-	free_netdev(netdev);
-	return 0;
-}
-
-static struct platform_driver ftgmac100_driver = {
-	.probe		= ftgmac100_probe,
-	.remove		= __exit_p(ftgmac100_remove),
-	.driver		= {
-		.name	= DRV_NAME,
-		.owner	= THIS_MODULE,
-	},
-};
-
-/******************************************************************************
- * initialization / finalization
- *****************************************************************************/
-static int __init ftgmac100_init(void)
-{
-	pr_info("Loading version " DRV_VERSION " ...\n");
-	return platform_driver_register(&ftgmac100_driver);
-}
-
-static void __exit ftgmac100_exit(void)
-{
-	platform_driver_unregister(&ftgmac100_driver);
-}
-
-module_init(ftgmac100_init);
-module_exit(ftgmac100_exit);
-
-MODULE_AUTHOR("Po-Yu Chuang <ratbert@faraday-tech.com>");
-MODULE_DESCRIPTION("FTGMAC100 driver");
-MODULE_LICENSE("GPL");