r6040: Move the RDC driver

Move the RDC driver into drivers/net/ethernet/rdc/ and make the
necessary Kconfig and Makefile changes.

CC: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1276 deletions

diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
deleted file mode 100644
index b64fcee483a..00000000000
--- a/drivers/net/r6040.c
+++ /dev/null
@@ -1,1276 +0,0 @@
-/*
- * RDC R6040 Fast Ethernet MAC support
- *
- * Copyright (C) 2004 Sten Wang <sten.wang@rdc.com.tw>
- * Copyright (C) 2007
- *	Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
- *	Florian Fainelli <florian@openwrt.org>
- *
- * 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., 51 Franklin Street, Fifth Floor,
- * Boston, MA  02110-1301, USA.
-*/
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/mii.h>
-#include <linux/ethtool.h>
-#include <linux/crc32.h>
-#include <linux/spinlock.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/uaccess.h>
-#include <linux/phy.h>
-
-#include <asm/processor.h>
-
-#define DRV_NAME	"r6040"
-#define DRV_VERSION	"0.27"
-#define DRV_RELDATE	"23Feb2011"
-
-/* PHY CHIP Address */
-#define PHY1_ADDR	1	/* For MAC1 */
-#define PHY2_ADDR	3	/* For MAC2 */
-#define PHY_MODE	0x3100	/* PHY CHIP Register 0 */
-#define PHY_CAP		0x01E1	/* PHY CHIP Register 4 */
-
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT	(6000 * HZ / 1000)
-
-/* RDC MAC I/O Size */
-#define R6040_IO_SIZE	256
-
-/* MAX RDC MAC */
-#define MAX_MAC		2
-
-/* MAC registers */
-#define MCR0		0x00	/* Control register 0 */
-#define  MCR0_PROMISC	0x0020	/* Promiscuous mode */
-#define  MCR0_HASH_EN	0x0100	/* Enable multicast hash table function */
-#define MCR1		0x04	/* Control register 1 */
-#define  MAC_RST	0x0001	/* Reset the MAC */
-#define MBCR		0x08	/* Bus control */
-#define MT_ICR		0x0C	/* TX interrupt control */
-#define MR_ICR		0x10	/* RX interrupt control */
-#define MTPR		0x14	/* TX poll command register */
-#define MR_BSR		0x18	/* RX buffer size */
-#define MR_DCR		0x1A	/* RX descriptor control */
-#define MLSR		0x1C	/* Last status */
-#define MMDIO		0x20	/* MDIO control register */
-#define  MDIO_WRITE	0x4000	/* MDIO write */
-#define  MDIO_READ	0x2000	/* MDIO read */
-#define MMRD		0x24	/* MDIO read data register */
-#define MMWD		0x28	/* MDIO write data register */
-#define MTD_SA0		0x2C	/* TX descriptor start address 0 */
-#define MTD_SA1		0x30	/* TX descriptor start address 1 */
-#define MRD_SA0		0x34	/* RX descriptor start address 0 */
-#define MRD_SA1		0x38	/* RX descriptor start address 1 */
-#define MISR		0x3C	/* Status register */
-#define MIER		0x40	/* INT enable register */
-#define  MSK_INT	0x0000	/* Mask off interrupts */
-#define  RX_FINISH	0x0001  /* RX finished */
-#define  RX_NO_DESC	0x0002  /* No RX descriptor available */
-#define  RX_FIFO_FULL	0x0004  /* RX FIFO full */
-#define  RX_EARLY	0x0008  /* RX early */
-#define  TX_FINISH	0x0010  /* TX finished */
-#define  TX_EARLY	0x0080  /* TX early */
-#define  EVENT_OVRFL	0x0100  /* Event counter overflow */
-#define  LINK_CHANGED	0x0200  /* PHY link changed */
-#define ME_CISR		0x44	/* Event counter INT status */
-#define ME_CIER		0x48	/* Event counter INT enable  */
-#define MR_CNT		0x50	/* Successfully received packet counter */
-#define ME_CNT0		0x52	/* Event counter 0 */
-#define ME_CNT1		0x54	/* Event counter 1 */
-#define ME_CNT2		0x56	/* Event counter 2 */
-#define ME_CNT3		0x58	/* Event counter 3 */
-#define MT_CNT		0x5A	/* Successfully transmit packet counter */
-#define ME_CNT4		0x5C	/* Event counter 4 */
-#define MP_CNT		0x5E	/* Pause frame counter register */
-#define MAR0		0x60	/* Hash table 0 */
-#define MAR1		0x62	/* Hash table 1 */
-#define MAR2		0x64	/* Hash table 2 */
-#define MAR3		0x66	/* Hash table 3 */
-#define MID_0L		0x68	/* Multicast address MID0 Low */
-#define MID_0M		0x6A	/* Multicast address MID0 Medium */
-#define MID_0H		0x6C	/* Multicast address MID0 High */
-#define MID_1L		0x70	/* MID1 Low */
-#define MID_1M		0x72	/* MID1 Medium */
-#define MID_1H		0x74	/* MID1 High */
-#define MID_2L		0x78	/* MID2 Low */
-#define MID_2M		0x7A	/* MID2 Medium */
-#define MID_2H		0x7C	/* MID2 High */
-#define MID_3L		0x80	/* MID3 Low */
-#define MID_3M		0x82	/* MID3 Medium */
-#define MID_3H		0x84	/* MID3 High */
-#define PHY_CC		0x88	/* PHY status change configuration register */
-#define PHY_ST		0x8A	/* PHY status register */
-#define MAC_SM		0xAC	/* MAC status machine */
-#define MAC_ID		0xBE	/* Identifier register */
-
-#define TX_DCNT		0x80	/* TX descriptor count */
-#define RX_DCNT		0x80	/* RX descriptor count */
-#define MAX_BUF_SIZE	0x600
-#define RX_DESC_SIZE	(RX_DCNT * sizeof(struct r6040_descriptor))
-#define TX_DESC_SIZE	(TX_DCNT * sizeof(struct r6040_descriptor))
-#define MBCR_DEFAULT	0x012A	/* MAC Bus Control Register */
-#define MCAST_MAX	3	/* Max number multicast addresses to filter */
-
-/* Descriptor status */
-#define DSC_OWNER_MAC	0x8000	/* MAC is the owner of this descriptor */
-#define DSC_RX_OK	0x4000	/* RX was successful */
-#define DSC_RX_ERR	0x0800	/* RX PHY error */
-#define DSC_RX_ERR_DRI	0x0400	/* RX dribble packet */
-#define DSC_RX_ERR_BUF	0x0200	/* RX length exceeds buffer size */
-#define DSC_RX_ERR_LONG	0x0100	/* RX length > maximum packet length */
-#define DSC_RX_ERR_RUNT	0x0080	/* RX packet length < 64 byte */
-#define DSC_RX_ERR_CRC	0x0040	/* RX CRC error */
-#define DSC_RX_BCAST	0x0020	/* RX broadcast (no error) */
-#define DSC_RX_MCAST	0x0010	/* RX multicast (no error) */
-#define DSC_RX_MCH_HIT	0x0008	/* RX multicast hit in hash table (no error) */
-#define DSC_RX_MIDH_HIT	0x0004	/* RX MID table hit (no error) */
-#define DSC_RX_IDX_MID_MASK 3	/* RX mask for the index of matched MIDx */
-
-/* PHY settings */
-#define ICPLUS_PHY_ID	0x0243
-
-MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>,"
-	"Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>,"
-	"Florian Fainelli <florian@openwrt.org>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
-MODULE_VERSION(DRV_VERSION " " DRV_RELDATE);
-
-/* RX and TX interrupts that we handle */
-#define RX_INTS			(RX_FIFO_FULL | RX_NO_DESC | RX_FINISH)
-#define TX_INTS			(TX_FINISH)
-#define INT_MASK		(RX_INTS | TX_INTS)
-
-struct r6040_descriptor {
-	u16	status, len;		/* 0-3 */
-	__le32	buf;			/* 4-7 */
-	__le32	ndesc;			/* 8-B */
-	u32	rev1;			/* C-F */
-	char	*vbufp;			/* 10-13 */
-	struct r6040_descriptor *vndescp;	/* 14-17 */
-	struct sk_buff *skb_ptr;	/* 18-1B */
-	u32	rev2;			/* 1C-1F */
-} __attribute__((aligned(32)));
-
-struct r6040_private {
-	spinlock_t lock;		/* driver lock */
-	struct pci_dev *pdev;
-	struct r6040_descriptor *rx_insert_ptr;
-	struct r6040_descriptor *rx_remove_ptr;
-	struct r6040_descriptor *tx_insert_ptr;
-	struct r6040_descriptor *tx_remove_ptr;
-	struct r6040_descriptor *rx_ring;
-	struct r6040_descriptor *tx_ring;
-	dma_addr_t rx_ring_dma;
-	dma_addr_t tx_ring_dma;
-	u16	tx_free_desc, phy_addr;
-	u16	mcr0, mcr1;
-	struct net_device *dev;
-	struct mii_bus *mii_bus;
-	struct napi_struct napi;
-	void __iomem *base;
-	struct phy_device *phydev;
-	int old_link;
-	int old_duplex;
-};
-
-static char version[] __devinitdata = DRV_NAME
-	": RDC R6040 NAPI net driver,"
-	"version "DRV_VERSION " (" DRV_RELDATE ")";
-
-static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
-
-/* Read a word data from PHY Chip */
-static int r6040_phy_read(void __iomem *ioaddr, int phy_addr, int reg)
-{
-	int limit = 2048;
-	u16 cmd;
-
-	iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO);
-	/* Wait for the read bit to be cleared */
-	while (limit--) {
-		cmd = ioread16(ioaddr + MMDIO);
-		if (!(cmd & MDIO_READ))
-			break;
-	}
-
-	return ioread16(ioaddr + MMRD);
-}
-
-/* Write a word data from PHY Chip */
-static void r6040_phy_write(void __iomem *ioaddr,
-					int phy_addr, int reg, u16 val)
-{
-	int limit = 2048;
-	u16 cmd;
-
-	iowrite16(val, ioaddr + MMWD);
-	/* Write the command to the MDIO bus */
-	iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO);
-	/* Wait for the write bit to be cleared */
-	while (limit--) {
-		cmd = ioread16(ioaddr + MMDIO);
-		if (!(cmd & MDIO_WRITE))
-			break;
-	}
-}
-
-static int r6040_mdiobus_read(struct mii_bus *bus, int phy_addr, int reg)
-{
-	struct net_device *dev = bus->priv;
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-
-	return r6040_phy_read(ioaddr, phy_addr, reg);
-}
-
-static int r6040_mdiobus_write(struct mii_bus *bus, int phy_addr,
-						int reg, u16 value)
-{
-	struct net_device *dev = bus->priv;
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-
-	r6040_phy_write(ioaddr, phy_addr, reg, value);
-
-	return 0;
-}
-
-static int r6040_mdiobus_reset(struct mii_bus *bus)
-{
-	return 0;
-}
-
-static void r6040_free_txbufs(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	int i;
-
-	for (i = 0; i < TX_DCNT; i++) {
-		if (lp->tx_insert_ptr->skb_ptr) {
-			pci_unmap_single(lp->pdev,
-				le32_to_cpu(lp->tx_insert_ptr->buf),
-				MAX_BUF_SIZE, PCI_DMA_TODEVICE);
-			dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
-			lp->tx_insert_ptr->skb_ptr = NULL;
-		}
-		lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
-	}
-}
-
-static void r6040_free_rxbufs(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	int i;
-
-	for (i = 0; i < RX_DCNT; i++) {
-		if (lp->rx_insert_ptr->skb_ptr) {
-			pci_unmap_single(lp->pdev,
-				le32_to_cpu(lp->rx_insert_ptr->buf),
-				MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
-			dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
-			lp->rx_insert_ptr->skb_ptr = NULL;
-		}
-		lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
-	}
-}
-
-static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
-				 dma_addr_t desc_dma, int size)
-{
-	struct r6040_descriptor *desc = desc_ring;
-	dma_addr_t mapping = desc_dma;
-
-	while (size-- > 0) {
-		mapping += sizeof(*desc);
-		desc->ndesc = cpu_to_le32(mapping);
-		desc->vndescp = desc + 1;
-		desc++;
-	}
-	desc--;
-	desc->ndesc = cpu_to_le32(desc_dma);
-	desc->vndescp = desc_ring;
-}
-
-static void r6040_init_txbufs(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-
-	lp->tx_free_desc = TX_DCNT;
-
-	lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
-	r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
-}
-
-static int r6040_alloc_rxbufs(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	struct r6040_descriptor *desc;
-	struct sk_buff *skb;
-	int rc;
-
-	lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
-	r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
-
-	/* Allocate skbs for the rx descriptors */
-	desc = lp->rx_ring;
-	do {
-		skb = netdev_alloc_skb(dev, MAX_BUF_SIZE);
-		if (!skb) {
-			netdev_err(dev, "failed to alloc skb for rx\n");
-			rc = -ENOMEM;
-			goto err_exit;
-		}
-		desc->skb_ptr = skb;
-		desc->buf = cpu_to_le32(pci_map_single(lp->pdev,
-					desc->skb_ptr->data,
-					MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
-		desc->status = DSC_OWNER_MAC;
-		desc = desc->vndescp;
-	} while (desc != lp->rx_ring);
-
-	return 0;
-
-err_exit:
-	/* Deallocate all previously allocated skbs */
-	r6040_free_rxbufs(dev);
-	return rc;
-}
-
-static void r6040_init_mac_regs(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	int limit = 2048;
-	u16 cmd;
-
-	/* Mask Off Interrupt */
-	iowrite16(MSK_INT, ioaddr + MIER);
-
-	/* Reset RDC MAC */
-	iowrite16(MAC_RST, ioaddr + MCR1);
-	while (limit--) {
-		cmd = ioread16(ioaddr + MCR1);
-		if (cmd & 0x1)
-			break;
-	}
-	/* Reset internal state machine */
-	iowrite16(2, ioaddr + MAC_SM);
-	iowrite16(0, ioaddr + MAC_SM);
-	mdelay(5);
-
-	/* MAC Bus Control Register */
-	iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
-
-	/* Buffer Size Register */
-	iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
-
-	/* Write TX ring start address */
-	iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
-	iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
-
-	/* Write RX ring start address */
-	iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
-	iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
-
-	/* Set interrupt waiting time and packet numbers */
-	iowrite16(0, ioaddr + MT_ICR);
-	iowrite16(0, ioaddr + MR_ICR);
-
-	/* Enable interrupts */
-	iowrite16(INT_MASK, ioaddr + MIER);
-
-	/* Enable TX and RX */
-	iowrite16(lp->mcr0 | 0x0002, ioaddr);
-
-	/* Let TX poll the descriptors
-	 * we may got called by r6040_tx_timeout which has left
-	 * some unsent tx buffers */
-	iowrite16(0x01, ioaddr + MTPR);
-}
-
-static void r6040_tx_timeout(struct net_device *dev)
-{
-	struct r6040_private *priv = netdev_priv(dev);
-	void __iomem *ioaddr = priv->base;
-
-	netdev_warn(dev, "transmit timed out, int enable %4.4x "
-		"status %4.4x\n",
-		ioread16(ioaddr + MIER),
-		ioread16(ioaddr + MISR));
-
-	dev->stats.tx_errors++;
-
-	/* Reset MAC and re-init all registers */
-	r6040_init_mac_regs(dev);
-}
-
-static struct net_device_stats *r6040_get_stats(struct net_device *dev)
-{
-	struct r6040_private *priv = netdev_priv(dev);
-	void __iomem *ioaddr = priv->base;
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->lock, flags);
-	dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
-	dev->stats.multicast += ioread8(ioaddr + ME_CNT0);
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	return &dev->stats;
-}
-
-/* Stop RDC MAC and Free the allocated resource */
-static void r6040_down(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	int limit = 2048;
-	u16 *adrp;
-	u16 cmd;
-
-	/* Stop MAC */
-	iowrite16(MSK_INT, ioaddr + MIER);	/* Mask Off Interrupt */
-	iowrite16(MAC_RST, ioaddr + MCR1);	/* Reset RDC MAC */
-	while (limit--) {
-		cmd = ioread16(ioaddr + MCR1);
-		if (cmd & 0x1)
-			break;
-	}
-
-	/* Restore MAC Address to MIDx */
-	adrp = (u16 *) dev->dev_addr;
-	iowrite16(adrp[0], ioaddr + MID_0L);
-	iowrite16(adrp[1], ioaddr + MID_0M);
-	iowrite16(adrp[2], ioaddr + MID_0H);
-}
-
-static int r6040_close(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	struct pci_dev *pdev = lp->pdev;
-
-	spin_lock_irq(&lp->lock);
-	napi_disable(&lp->napi);
-	netif_stop_queue(dev);
-	r6040_down(dev);
-
-	free_irq(dev->irq, dev);
-
-	/* Free RX buffer */
-	r6040_free_rxbufs(dev);
-
-	/* Free TX buffer */
-	r6040_free_txbufs(dev);
-
-	spin_unlock_irq(&lp->lock);
-
-	/* Free Descriptor memory */
-	if (lp->rx_ring) {
-		pci_free_consistent(pdev,
-				RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma);
-		lp->rx_ring = NULL;
-	}
-
-	if (lp->tx_ring) {
-		pci_free_consistent(pdev,
-				TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma);
-		lp->tx_ring = NULL;
-	}
-
-	return 0;
-}
-
-static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-
-	if (!lp->phydev)
-		return -EINVAL;
-
-	return phy_mii_ioctl(lp->phydev, rq, cmd);
-}
-
-static int r6040_rx(struct net_device *dev, int limit)
-{
-	struct r6040_private *priv = netdev_priv(dev);
-	struct r6040_descriptor *descptr = priv->rx_remove_ptr;
-	struct sk_buff *skb_ptr, *new_skb;
-	int count = 0;
-	u16 err;
-
-	/* Limit not reached and the descriptor belongs to the CPU */
-	while (count < limit && !(descptr->status & DSC_OWNER_MAC)) {
-		/* Read the descriptor status */
-		err = descptr->status;
-		/* Global error status set */
-		if (err & DSC_RX_ERR) {
-			/* RX dribble */
-			if (err & DSC_RX_ERR_DRI)
-				dev->stats.rx_frame_errors++;
-			/* Buffer length exceeded */
-			if (err & DSC_RX_ERR_BUF)
-				dev->stats.rx_length_errors++;
-			/* Packet too long */
-			if (err & DSC_RX_ERR_LONG)
-				dev->stats.rx_length_errors++;
-			/* Packet < 64 bytes */
-			if (err & DSC_RX_ERR_RUNT)
-				dev->stats.rx_length_errors++;
-			/* CRC error */
-			if (err & DSC_RX_ERR_CRC) {
-				spin_lock(&priv->lock);
-				dev->stats.rx_crc_errors++;
-				spin_unlock(&priv->lock);
-			}
-			goto next_descr;
-		}
-
-		/* Packet successfully received */
-		new_skb = netdev_alloc_skb(dev, MAX_BUF_SIZE);
-		if (!new_skb) {
-			dev->stats.rx_dropped++;
-			goto next_descr;
-		}
-		skb_ptr = descptr->skb_ptr;
-		skb_ptr->dev = priv->dev;
-
-		/* Do not count the CRC */
-		skb_put(skb_ptr, descptr->len - 4);
-		pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf),
-					MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
-		skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev);
-
-		/* Send to upper layer */
-		netif_receive_skb(skb_ptr);
-		dev->stats.rx_packets++;
-		dev->stats.rx_bytes += descptr->len - 4;
-
-		/* put new skb into descriptor */
-		descptr->skb_ptr = new_skb;
-		descptr->buf = cpu_to_le32(pci_map_single(priv->pdev,
-						descptr->skb_ptr->data,
-					MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
-
-next_descr:
-		/* put the descriptor back to the MAC */
-		descptr->status = DSC_OWNER_MAC;
-		descptr = descptr->vndescp;
-		count++;
-	}
-	priv->rx_remove_ptr = descptr;
-
-	return count;
-}
-
-static void r6040_tx(struct net_device *dev)
-{
-	struct r6040_private *priv = netdev_priv(dev);
-	struct r6040_descriptor *descptr;
-	void __iomem *ioaddr = priv->base;
-	struct sk_buff *skb_ptr;
-	u16 err;
-
-	spin_lock(&priv->lock);
-	descptr = priv->tx_remove_ptr;
-	while (priv->tx_free_desc < TX_DCNT) {
-		/* Check for errors */
-		err = ioread16(ioaddr + MLSR);
-
-		if (err & 0x0200)
-			dev->stats.rx_fifo_errors++;
-		if (err & (0x2000 | 0x4000))
-			dev->stats.tx_carrier_errors++;
-
-		if (descptr->status & DSC_OWNER_MAC)
-			break; /* Not complete */
-		skb_ptr = descptr->skb_ptr;
-		pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf),
-			skb_ptr->len, PCI_DMA_TODEVICE);
-		/* Free buffer */
-		dev_kfree_skb_irq(skb_ptr);
-		descptr->skb_ptr = NULL;
-		/* To next descriptor */
-		descptr = descptr->vndescp;
-		priv->tx_free_desc++;
-	}
-	priv->tx_remove_ptr = descptr;
-
-	if (priv->tx_free_desc)
-		netif_wake_queue(dev);
-	spin_unlock(&priv->lock);
-}
-
-static int r6040_poll(struct napi_struct *napi, int budget)
-{
-	struct r6040_private *priv =
-		container_of(napi, struct r6040_private, napi);
-	struct net_device *dev = priv->dev;
-	void __iomem *ioaddr = priv->base;
-	int work_done;
-
-	work_done = r6040_rx(dev, budget);
-
-	if (work_done < budget) {
-		napi_complete(napi);
-		/* Enable RX interrupt */
-		iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER);
-	}
-	return work_done;
-}
-
-/* The RDC interrupt handler. */
-static irqreturn_t r6040_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	u16 misr, status;
-
-	/* Save MIER */
-	misr = ioread16(ioaddr + MIER);
-	/* Mask off RDC MAC interrupt */
-	iowrite16(MSK_INT, ioaddr + MIER);
-	/* Read MISR status and clear */
-	status = ioread16(ioaddr + MISR);
-
-	if (status == 0x0000 || status == 0xffff) {
-		/* Restore RDC MAC interrupt */
-		iowrite16(misr, ioaddr + MIER);
-		return IRQ_NONE;
-	}
-
-	/* RX interrupt request */
-	if (status & RX_INTS) {
-		if (status & RX_NO_DESC) {
-			/* RX descriptor unavailable */
-			dev->stats.rx_dropped++;
-			dev->stats.rx_missed_errors++;
-		}
-		if (status & RX_FIFO_FULL)
-			dev->stats.rx_fifo_errors++;
-
-		if (likely(napi_schedule_prep(&lp->napi))) {
-			/* Mask off RX interrupt */
-			misr &= ~RX_INTS;
-			__napi_schedule(&lp->napi);
-		}
-	}
-
-	/* TX interrupt request */
-	if (status & TX_INTS)
-		r6040_tx(dev);
-
-	/* Restore RDC MAC interrupt */
-	iowrite16(misr, ioaddr + MIER);
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void r6040_poll_controller(struct net_device *dev)
-{
-	disable_irq(dev->irq);
-	r6040_interrupt(dev->irq, dev);
-	enable_irq(dev->irq);
-}
-#endif
-
-/* Init RDC MAC */
-static int r6040_up(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	int ret;
-
-	/* Initialise and alloc RX/TX buffers */
-	r6040_init_txbufs(dev);
-	ret = r6040_alloc_rxbufs(dev);
-	if (ret)
-		return ret;
-
-	/* improve performance (by RDC guys) */
-	r6040_phy_write(ioaddr, 30, 17,
-			(r6040_phy_read(ioaddr, 30, 17) | 0x4000));
-	r6040_phy_write(ioaddr, 30, 17,
-			~((~r6040_phy_read(ioaddr, 30, 17)) | 0x2000));
-	r6040_phy_write(ioaddr, 0, 19, 0x0000);
-	r6040_phy_write(ioaddr, 0, 30, 0x01F0);
-
-	/* Initialize all MAC registers */
-	r6040_init_mac_regs(dev);
-
-	return 0;
-}
-
-
-/* Read/set MAC address routines */
-static void r6040_mac_address(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	u16 *adrp;
-
-	/* MAC operation register */
-	iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */
-	iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */
-	iowrite16(0, ioaddr + MAC_SM);
-	mdelay(5);
-
-	/* Restore MAC Address */
-	adrp = (u16 *) dev->dev_addr;
-	iowrite16(adrp[0], ioaddr + MID_0L);
-	iowrite16(adrp[1], ioaddr + MID_0M);
-	iowrite16(adrp[2], ioaddr + MID_0H);
-
-	/* Store MAC Address in perm_addr */
-	memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
-}
-
-static int r6040_open(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	int ret;
-
-	/* Request IRQ and Register interrupt handler */
-	ret = request_irq(dev->irq, r6040_interrupt,
-		IRQF_SHARED, dev->name, dev);
-	if (ret)
-		goto out;
-
-	/* Set MAC address */
-	r6040_mac_address(dev);
-
-	/* Allocate Descriptor memory */
-	lp->rx_ring =
-		pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma);
-	if (!lp->rx_ring) {
-		ret = -ENOMEM;
-		goto err_free_irq;
-	}
-
-	lp->tx_ring =
-		pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma);
-	if (!lp->tx_ring) {
-		ret = -ENOMEM;
-		goto err_free_rx_ring;
-	}
-
-	ret = r6040_up(dev);
-	if (ret)
-		goto err_free_tx_ring;
-
-	napi_enable(&lp->napi);
-	netif_start_queue(dev);
-
-	return 0;
-
-err_free_tx_ring:
-	pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring,
-			lp->tx_ring_dma);
-err_free_rx_ring:
-	pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring,
-			lp->rx_ring_dma);
-err_free_irq:
-	free_irq(dev->irq, dev);
-out:
-	return ret;
-}
-
-static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
-				    struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	struct r6040_descriptor *descptr;
-	void __iomem *ioaddr = lp->base;
-	unsigned long flags;
-
-	/* Critical Section */
-	spin_lock_irqsave(&lp->lock, flags);
-
-	/* TX resource check */
-	if (!lp->tx_free_desc) {
-		spin_unlock_irqrestore(&lp->lock, flags);
-		netif_stop_queue(dev);
-		netdev_err(dev, ": no tx descriptor\n");
-		return NETDEV_TX_BUSY;
-	}
-
-	/* Statistic Counter */
-	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += skb->len;
-	/* Set TX descriptor & Transmit it */
-	lp->tx_free_desc--;
-	descptr = lp->tx_insert_ptr;
-	if (skb->len < MISR)
-		descptr->len = MISR;
-	else
-		descptr->len = skb->len;
-
-	descptr->skb_ptr = skb;
-	descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
-		skb->data, skb->len, PCI_DMA_TODEVICE));
-	descptr->status = DSC_OWNER_MAC;
-
-	skb_tx_timestamp(skb);
-
-	/* Trigger the MAC to check the TX descriptor */
-	iowrite16(0x01, ioaddr + MTPR);
-	lp->tx_insert_ptr = descptr->vndescp;
-
-	/* If no tx resource, stop */
-	if (!lp->tx_free_desc)
-		netif_stop_queue(dev);
-
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	return NETDEV_TX_OK;
-}
-
-static void r6040_multicast_list(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	void __iomem *ioaddr = lp->base;
-	unsigned long flags;
-	struct netdev_hw_addr *ha;
-	int i;
-	u16 *adrp;
-	u16 hash_table[4] = { 0 };
-
-	spin_lock_irqsave(&lp->lock, flags);
-
-	/* Keep our MAC Address */
-	adrp = (u16 *)dev->dev_addr;
-	iowrite16(adrp[0], ioaddr + MID_0L);
-	iowrite16(adrp[1], ioaddr + MID_0M);
-	iowrite16(adrp[2], ioaddr + MID_0H);
-
-	/* Clear AMCP & PROM bits */
-	lp->mcr0 = ioread16(ioaddr + MCR0) & ~(MCR0_PROMISC | MCR0_HASH_EN);
-
-	/* Promiscuous mode */
-	if (dev->flags & IFF_PROMISC)
-		lp->mcr0 |= MCR0_PROMISC;
-
-	/* Enable multicast hash table function to
-	 * receive all multicast packets. */
-	else if (dev->flags & IFF_ALLMULTI) {
-		lp->mcr0 |= MCR0_HASH_EN;
-
-		for (i = 0; i < MCAST_MAX ; i++) {
-			iowrite16(0, ioaddr + MID_1L + 8 * i);
-			iowrite16(0, ioaddr + MID_1M + 8 * i);
-			iowrite16(0, ioaddr + MID_1H + 8 * i);
-		}
-
-		for (i = 0; i < 4; i++)
-			hash_table[i] = 0xffff;
-	}
-	/* Use internal multicast address registers if the number of
-	 * multicast addresses is not greater than MCAST_MAX. */
-	else if (netdev_mc_count(dev) <= MCAST_MAX) {
-		i = 0;
-		netdev_for_each_mc_addr(ha, dev) {
-			u16 *adrp = (u16 *) ha->addr;
-			iowrite16(adrp[0], ioaddr + MID_1L + 8 * i);
-			iowrite16(adrp[1], ioaddr + MID_1M + 8 * i);
-			iowrite16(adrp[2], ioaddr + MID_1H + 8 * i);
-			i++;
-		}
-		while (i < MCAST_MAX) {
-			iowrite16(0, ioaddr + MID_1L + 8 * i);
-			iowrite16(0, ioaddr + MID_1M + 8 * i);
-			iowrite16(0, ioaddr + MID_1H + 8 * i);
-			i++;
-		}
-	}
-	/* Otherwise, Enable multicast hash table function. */
-	else {
-		u32 crc;
-
-		lp->mcr0 |= MCR0_HASH_EN;
-
-		for (i = 0; i < MCAST_MAX ; i++) {
-			iowrite16(0, ioaddr + MID_1L + 8 * i);
-			iowrite16(0, ioaddr + MID_1M + 8 * i);
-			iowrite16(0, ioaddr + MID_1H + 8 * i);
-		}
-
-		/* Build multicast hash table */
-		netdev_for_each_mc_addr(ha, dev) {
-			u8 *addrs = ha->addr;
-
-			crc = ether_crc(ETH_ALEN, addrs);
-			crc >>= 26;
-			hash_table[crc >> 4] |= 1 << (crc & 0xf);
-		}
-	}
-
-	iowrite16(lp->mcr0, ioaddr + MCR0);
-
-	/* Fill the MAC hash tables with their values */
-	if (lp->mcr0 && MCR0_HASH_EN) {
-		iowrite16(hash_table[0], ioaddr + MAR0);
-		iowrite16(hash_table[1], ioaddr + MAR1);
-		iowrite16(hash_table[2], ioaddr + MAR2);
-		iowrite16(hash_table[3], ioaddr + MAR3);
-	}
-
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-static void netdev_get_drvinfo(struct net_device *dev,
-			struct ethtool_drvinfo *info)
-{
-	struct r6040_private *rp = netdev_priv(dev);
-
-	strcpy(info->driver, DRV_NAME);
-	strcpy(info->version, DRV_VERSION);
-	strcpy(info->bus_info, pci_name(rp->pdev));
-}
-
-static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct r6040_private *rp = netdev_priv(dev);
-
-	return  phy_ethtool_gset(rp->phydev, cmd);
-}
-
-static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct r6040_private *rp = netdev_priv(dev);
-
-	return phy_ethtool_sset(rp->phydev, cmd);
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
-	.get_drvinfo		= netdev_get_drvinfo,
-	.get_settings		= netdev_get_settings,
-	.set_settings		= netdev_set_settings,
-	.get_link		= ethtool_op_get_link,
-};
-
-static const struct net_device_ops r6040_netdev_ops = {
-	.ndo_open		= r6040_open,
-	.ndo_stop		= r6040_close,
-	.ndo_start_xmit		= r6040_start_xmit,
-	.ndo_get_stats		= r6040_get_stats,
-	.ndo_set_multicast_list = r6040_multicast_list,
-	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_set_mac_address	= eth_mac_addr,
-	.ndo_do_ioctl		= r6040_ioctl,
-	.ndo_tx_timeout		= r6040_tx_timeout,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= r6040_poll_controller,
-#endif
-};
-
-static void r6040_adjust_link(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	struct phy_device *phydev = lp->phydev;
-	int status_changed = 0;
-	void __iomem *ioaddr = lp->base;
-
-	BUG_ON(!phydev);
-
-	if (lp->old_link != phydev->link) {
-		status_changed = 1;
-		lp->old_link = phydev->link;
-	}
-
-	/* reflect duplex change */
-	if (phydev->link && (lp->old_duplex != phydev->duplex)) {
-		lp->mcr0 |= (phydev->duplex == DUPLEX_FULL ? 0x8000 : 0);
-		iowrite16(lp->mcr0, ioaddr);
-
-		status_changed = 1;
-		lp->old_duplex = phydev->duplex;
-	}
-
-	if (status_changed) {
-		pr_info("%s: link %s", dev->name, phydev->link ?
-			"UP" : "DOWN");
-		if (phydev->link)
-			pr_cont(" - %d/%s", phydev->speed,
-			DUPLEX_FULL == phydev->duplex ? "full" : "half");
-		pr_cont("\n");
-	}
-}
-
-static int r6040_mii_probe(struct net_device *dev)
-{
-	struct r6040_private *lp = netdev_priv(dev);
-	struct phy_device *phydev = NULL;
-
-	phydev = phy_find_first(lp->mii_bus);
-	if (!phydev) {
-		dev_err(&lp->pdev->dev, "no PHY found\n");
-		return -ENODEV;
-	}
-
-	phydev = phy_connect(dev, dev_name(&phydev->dev), &r6040_adjust_link,
-				0, PHY_INTERFACE_MODE_MII);
-
-	if (IS_ERR(phydev)) {
-		dev_err(&lp->pdev->dev, "could not attach to PHY\n");
-		return PTR_ERR(phydev);
-	}
-
-	/* mask with MAC supported features */
-	phydev->supported &= (SUPPORTED_10baseT_Half
-				| SUPPORTED_10baseT_Full
-				| SUPPORTED_100baseT_Half
-				| SUPPORTED_100baseT_Full
-				| SUPPORTED_Autoneg
-				| SUPPORTED_MII
-				| SUPPORTED_TP);
-
-	phydev->advertising = phydev->supported;
-	lp->phydev = phydev;
-	lp->old_link = 0;
-	lp->old_duplex = -1;
-
-	dev_info(&lp->pdev->dev, "attached PHY driver [%s] "
-		"(mii_bus:phy_addr=%s)\n",
-		phydev->drv->name, dev_name(&phydev->dev));
-
-	return 0;
-}
-
-static int __devinit r6040_init_one(struct pci_dev *pdev,
-					 const struct pci_device_id *ent)
-{
-	struct net_device *dev;
-	struct r6040_private *lp;
-	void __iomem *ioaddr;
-	int err, io_size = R6040_IO_SIZE;
-	static int card_idx = -1;
-	int bar = 0;
-	u16 *adrp;
-	int i;
-
-	pr_info("%s\n", version);
-
-	err = pci_enable_device(pdev);
-	if (err)
-		goto err_out;
-
-	/* this should always be supported */
-	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-	if (err) {
-		dev_err(&pdev->dev, "32-bit PCI DMA addresses"
-				"not supported by the card\n");
-		goto err_out;
-	}
-	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
-	if (err) {
-		dev_err(&pdev->dev, "32-bit PCI DMA addresses"
-				"not supported by the card\n");
-		goto err_out;
-	}
-
-	/* IO Size check */
-	if (pci_resource_len(pdev, bar) < io_size) {
-		dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n");
-		err = -EIO;
-		goto err_out;
-	}
-
-	pci_set_master(pdev);
-
-	dev = alloc_etherdev(sizeof(struct r6040_private));
-	if (!dev) {
-		dev_err(&pdev->dev, "Failed to allocate etherdev\n");
-		err = -ENOMEM;
-		goto err_out;
-	}
-	SET_NETDEV_DEV(dev, &pdev->dev);
-	lp = netdev_priv(dev);
-
-	err = pci_request_regions(pdev, DRV_NAME);
-
-	if (err) {
-		dev_err(&pdev->dev, "Failed to request PCI regions\n");
-		goto err_out_free_dev;
-	}
-
-	ioaddr = pci_iomap(pdev, bar, io_size);
-	if (!ioaddr) {
-		dev_err(&pdev->dev, "ioremap failed for device\n");
-		err = -EIO;
-		goto err_out_free_res;
-	}
-	/* If PHY status change register is still set to zero it means the
-	 * bootloader didn't initialize it */
-	if (ioread16(ioaddr + PHY_CC) == 0)
-		iowrite16(0x9f07, ioaddr + PHY_CC);
-
-	/* Init system & device */
-	lp->base = ioaddr;
-	dev->irq = pdev->irq;
-
-	spin_lock_init(&lp->lock);
-	pci_set_drvdata(pdev, dev);
-
-	/* Set MAC address */
-	card_idx++;
-
-	adrp = (u16 *)dev->dev_addr;
-	adrp[0] = ioread16(ioaddr + MID_0L);
-	adrp[1] = ioread16(ioaddr + MID_0M);
-	adrp[2] = ioread16(ioaddr + MID_0H);
-
-	/* Some bootloader/BIOSes do not initialize
-	 * MAC address, warn about that */
-	if (!(adrp[0] || adrp[1] || adrp[2])) {
-		netdev_warn(dev, "MAC address not initialized, "
-					"generating random\n");
-		random_ether_addr(dev->dev_addr);
-	}
-
-	/* Link new device into r6040_root_dev */
-	lp->pdev = pdev;
-	lp->dev = dev;
-
-	/* Init RDC private data */
-	lp->mcr0 = 0x1002;
-	lp->phy_addr = phy_table[card_idx];
-
-	/* The RDC-specific entries in the device structure. */
-	dev->netdev_ops = &r6040_netdev_ops;
-	dev->ethtool_ops = &netdev_ethtool_ops;
-	dev->watchdog_timeo = TX_TIMEOUT;
-
-	netif_napi_add(dev, &lp->napi, r6040_poll, 64);
-
-	lp->mii_bus = mdiobus_alloc();
-	if (!lp->mii_bus) {
-		dev_err(&pdev->dev, "mdiobus_alloc() failed\n");
-		err = -ENOMEM;
-		goto err_out_unmap;
-	}
-
-	lp->mii_bus->priv = dev;
-	lp->mii_bus->read = r6040_mdiobus_read;
-	lp->mii_bus->write = r6040_mdiobus_write;
-	lp->mii_bus->reset = r6040_mdiobus_reset;
-	lp->mii_bus->name = "r6040_eth_mii";
-	snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", card_idx);
-	lp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
-	if (!lp->mii_bus->irq) {
-		dev_err(&pdev->dev, "mii_bus irq allocation failed\n");
-		err = -ENOMEM;
-		goto err_out_mdio;
-	}
-
-	for (i = 0; i < PHY_MAX_ADDR; i++)
-		lp->mii_bus->irq[i] = PHY_POLL;
-
-	err = mdiobus_register(lp->mii_bus);
-	if (err) {
-		dev_err(&pdev->dev, "failed to register MII bus\n");
-		goto err_out_mdio_irq;
-	}
-
-	err = r6040_mii_probe(dev);
-	if (err) {
-		dev_err(&pdev->dev, "failed to probe MII bus\n");
-		goto err_out_mdio_unregister;
-	}
-
-	/* Register net device. After this dev->name assign */
-	err = register_netdev(dev);
-	if (err) {
-		dev_err(&pdev->dev, "Failed to register net device\n");
-		goto err_out_mdio_unregister;
-	}
-	return 0;
-
-err_out_mdio_unregister:
-	mdiobus_unregister(lp->mii_bus);
-err_out_mdio_irq:
-	kfree(lp->mii_bus->irq);
-err_out_mdio:
-	mdiobus_free(lp->mii_bus);
-err_out_unmap:
-	pci_iounmap(pdev, ioaddr);
-err_out_free_res:
-	pci_release_regions(pdev);
-err_out_free_dev:
-	free_netdev(dev);
-err_out:
-	return err;
-}
-
-static void __devexit r6040_remove_one(struct pci_dev *pdev)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
-	struct r6040_private *lp = netdev_priv(dev);
-
-	unregister_netdev(dev);
-	mdiobus_unregister(lp->mii_bus);
-	kfree(lp->mii_bus->irq);
-	mdiobus_free(lp->mii_bus);
-	pci_release_regions(pdev);
-	free_netdev(dev);
-	pci_disable_device(pdev);
-	pci_set_drvdata(pdev, NULL);
-}
-
-
-static DEFINE_PCI_DEVICE_TABLE(r6040_pci_tbl) = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) },
-	{ 0 }
-};
-MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
-
-static struct pci_driver r6040_driver = {
-	.name		= DRV_NAME,
-	.id_table	= r6040_pci_tbl,
-	.probe		= r6040_init_one,
-	.remove		= __devexit_p(r6040_remove_one),
-};
-
-
-static int __init r6040_init(void)
-{
-	return pci_register_driver(&r6040_driver);
-}
-
-
-static void __exit r6040_cleanup(void)
-{
-	pci_unregister_driver(&r6040_driver);
-}
-
-module_init(r6040_init);
-module_exit(r6040_cleanup);