[POWERPC] Delete unused fec_8xx net driver

This driver has been superseded by fs_enet and is no longer in use.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 0 insertions, 1264 deletions

diff --git a/drivers/net/fec_8xx/fec_main.c b/drivers/net/fec_8xx/fec_main.c
deleted file mode 100644
index ca8d2e83ab03..000000000000
--- a/drivers/net/fec_8xx/fec_main.c
+++ /dev/null
@@ -1,1264 +0,0 @@
-/*
- * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx.
- *
- * Copyright (c) 2003 Intracom S.A. 
- *  by Pantelis Antoniou <panto@intracom.gr>
- *
- * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
- * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
- *
- * Released under the GPL
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
-#include <linux/mii.h>
-#include <linux/ethtool.h>
-#include <linux/bitops.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/8xx_immap.h>
-#include <asm/pgtable.h>
-#include <asm/mpc8xx.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/cpm1.h>
-
-#include "fec_8xx.h"
-
-/*************************************************/
-
-#define FEC_MAX_MULTICAST_ADDRS	64
-
-/*************************************************/
-
-static char version[] __devinitdata =
-    DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
-
-MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
-MODULE_DESCRIPTION("Motorola 8xx FEC ethernet driver");
-MODULE_LICENSE("GPL");
-
-int fec_8xx_debug = -1;		/* -1 == use FEC_8XX_DEF_MSG_ENABLE as value */
-module_param(fec_8xx_debug, int, 0);
-MODULE_PARM_DESC(fec_8xx_debug,
-		 "FEC 8xx bitmapped debugging message enable value");
-
-
-/*************************************************/
-
-/*
- * Delay to wait for FEC reset command to complete (in us) 
- */
-#define FEC_RESET_DELAY		50
-
-/*****************************************************************************************/
-
-static void fec_whack_reset(fec_t * fecp)
-{
-	int i;
-
-	/*
-	 * Whack a reset.  We should wait for this.  
-	 */
-	FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET);
-	for (i = 0;
-	     (FR(fecp, ecntrl) & FEC_ECNTRL_RESET) != 0 && i < FEC_RESET_DELAY;
-	     i++)
-		udelay(1);
-
-	if (i == FEC_RESET_DELAY)
-		printk(KERN_WARNING "FEC Reset timeout!\n");
-
-}
-
-/****************************************************************************/
-
-/*
- * Transmitter timeout.  
- */
-#define TX_TIMEOUT (2*HZ)
-
-/****************************************************************************/
-
-/*
- * Returns the CRC needed when filling in the hash table for
- * multicast group filtering
- * pAddr must point to a MAC address (6 bytes)
- */
-static __u32 fec_mulicast_calc_crc(char *pAddr)
-{
-	u8 byte;
-	int byte_count;
-	int bit_count;
-	__u32 crc = 0xffffffff;
-	u8 msb;
-
-	for (byte_count = 0; byte_count < 6; byte_count++) {
-		byte = pAddr[byte_count];
-		for (bit_count = 0; bit_count < 8; bit_count++) {
-			msb = crc >> 31;
-			crc <<= 1;
-			if (msb ^ (byte & 0x1)) {
-				crc ^= FEC_CRC_POLY;
-			}
-			byte >>= 1;
-		}
-	}
-	return (crc);
-}
-
-/*
- * Set or clear the multicast filter for this adaptor.
- * Skeleton taken from sunlance driver.
- * The CPM Ethernet implementation allows Multicast as well as individual
- * MAC address filtering.  Some of the drivers check to make sure it is
- * a group multicast address, and discard those that are not.  I guess I
- * will do the same for now, but just remove the test if you want
- * individual filtering as well (do the upper net layers want or support
- * this kind of feature?).
- */
-static void fec_set_multicast_list(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	fec_t *fecp = fep->fecp;
-	struct dev_mc_list *pmc;
-	__u32 crc;
-	int temp;
-	__u32 csrVal;
-	int hash_index;
-	__u32 hthi, htlo;
-	unsigned long flags;
-
-
-	if ((dev->flags & IFF_PROMISC) != 0) {
-
-		spin_lock_irqsave(&fep->lock, flags);
-		FS(fecp, r_cntrl, FEC_RCNTRL_PROM);
-		spin_unlock_irqrestore(&fep->lock, flags);
-
-		/*
-		 * Log any net taps. 
-		 */
-		printk(KERN_WARNING DRV_MODULE_NAME
-		       ": %s: Promiscuous mode enabled.\n", dev->name);
-		return;
-
-	}
-
-	if ((dev->flags & IFF_ALLMULTI) != 0 ||
-	    dev->mc_count > FEC_MAX_MULTICAST_ADDRS) {
-		/*
-		 * Catch all multicast addresses, set the filter to all 1's.
-		 */
-		hthi = 0xffffffffU;
-		htlo = 0xffffffffU;
-	} else {
-		hthi = 0;
-		htlo = 0;
-
-		/*
-		 * Now populate the hash table 
-		 */
-		for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) {
-			crc = fec_mulicast_calc_crc(pmc->dmi_addr);
-			temp = (crc & 0x3f) >> 1;
-			hash_index = ((temp & 0x01) << 4) |
-				     ((temp & 0x02) << 2) |
-				     ((temp & 0x04)) |
-				     ((temp & 0x08) >> 2) |
-				     ((temp & 0x10) >> 4);
-			csrVal = (1 << hash_index);
-			if (crc & 1)
-				hthi |= csrVal;
-			else
-				htlo |= csrVal;
-		}
-	}
-
-	spin_lock_irqsave(&fep->lock, flags);
-	FC(fecp, r_cntrl, FEC_RCNTRL_PROM);
-	FW(fecp, hash_table_high, hthi);
-	FW(fecp, hash_table_low, htlo);
-	spin_unlock_irqrestore(&fep->lock, flags);
-}
-
-static int fec_set_mac_address(struct net_device *dev, void *addr)
-{
-	struct sockaddr *mac = addr;
-	struct fec_enet_private *fep = netdev_priv(dev);
-	struct fec *fecp = fep->fecp;
-	int i;
-	__u32 addrhi, addrlo;
-	unsigned long flags;
-
-	/* Get pointer to SCC area in parameter RAM. */
-	for (i = 0; i < 6; i++)
-		dev->dev_addr[i] = mac->sa_data[i];
-
-	/*
-	 * Set station address. 
-	 */
-	addrhi = ((__u32) dev->dev_addr[0] << 24) |
-		 ((__u32) dev->dev_addr[1] << 16) |
-	   	 ((__u32) dev->dev_addr[2] <<  8) |
-	    	  (__u32) dev->dev_addr[3];
-	addrlo = ((__u32) dev->dev_addr[4] << 24) |
-	    	 ((__u32) dev->dev_addr[5] << 16);
-
-	spin_lock_irqsave(&fep->lock, flags);
-	FW(fecp, addr_low, addrhi);
-	FW(fecp, addr_high, addrlo);
-	spin_unlock_irqrestore(&fep->lock, flags);
-
-	return 0;
-}
-
-/*
- * This function is called to start or restart the FEC during a link
- * change.  This only happens when switching between half and full
- * duplex.
- */
-void fec_restart(struct net_device *dev, int duplex, int speed)
-{
-#ifdef CONFIG_DUET
-	immap_t *immap = (immap_t *) IMAP_ADDR;
-	__u32 cptr;
-#endif
-	struct fec_enet_private *fep = netdev_priv(dev);
-	struct fec *fecp = fep->fecp;
-	const struct fec_platform_info *fpi = fep->fpi;
-	cbd_t *bdp;
-	struct sk_buff *skb;
-	int i;
-	__u32 addrhi, addrlo;
-
-	fec_whack_reset(fep->fecp);
-
-	/*
-	 * Set station address. 
-	 */
-	addrhi = ((__u32) dev->dev_addr[0] << 24) |
-		 ((__u32) dev->dev_addr[1] << 16) |
-		 ((__u32) dev->dev_addr[2] <<  8) |
-		 (__u32) dev->dev_addr[3];
-	addrlo = ((__u32) dev->dev_addr[4] << 24) |
-		 ((__u32) dev->dev_addr[5] << 16);
-	FW(fecp, addr_low, addrhi);
-	FW(fecp, addr_high, addrlo);
-
-	/*
-	 * Reset all multicast. 
-	 */
-	FW(fecp, hash_table_high, 0);
-	FW(fecp, hash_table_low, 0);
-
-	/*
-	 * Set maximum receive buffer size. 
-	 */
-	FW(fecp, r_buff_size, PKT_MAXBLR_SIZE);
-	FW(fecp, r_hash, PKT_MAXBUF_SIZE);
-
-	/*
-	 * Set receive and transmit descriptor base. 
-	 */
-	FW(fecp, r_des_start, iopa((__u32) (fep->rx_bd_base)));
-	FW(fecp, x_des_start, iopa((__u32) (fep->tx_bd_base)));
-
-	fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
-	fep->tx_free = fep->tx_ring;
-	fep->cur_rx = fep->rx_bd_base;
-
-	/*
-	 * Reset SKB receive buffers 
-	 */
-	for (i = 0; i < fep->rx_ring; i++) {
-		if ((skb = fep->rx_skbuff[i]) == NULL)
-			continue;
-		fep->rx_skbuff[i] = NULL;
-		dev_kfree_skb(skb);
-	}
-
-	/*
-	 * Initialize the receive buffer descriptors. 
-	 */
-	for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
-		skb = dev_alloc_skb(ENET_RX_FRSIZE);
-		if (skb == NULL) {
-			printk(KERN_WARNING DRV_MODULE_NAME
-			       ": %s Memory squeeze, unable to allocate skb\n",
-			       dev->name);
-			fep->stats.rx_dropped++;
-			break;
-		}
-		fep->rx_skbuff[i] = skb;
-		skb->dev = dev;
-		CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data,
-					 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
-					 DMA_FROM_DEVICE));
-		CBDW_DATLEN(bdp, 0);	/* zero */
-		CBDW_SC(bdp, BD_ENET_RX_EMPTY |
-			((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
-	}
-	/*
-	 * if we failed, fillup remainder 
-	 */
-	for (; i < fep->rx_ring; i++, bdp++) {
-		fep->rx_skbuff[i] = NULL;
-		CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
-	}
-
-	/*
-	 * Reset SKB transmit buffers.  
-	 */
-	for (i = 0; i < fep->tx_ring; i++) {
-		if ((skb = fep->tx_skbuff[i]) == NULL)
-			continue;
-		fep->tx_skbuff[i] = NULL;
-		dev_kfree_skb(skb);
-	}
-
-	/*
-	 * ...and the same for transmit.  
-	 */
-	for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
-		fep->tx_skbuff[i] = NULL;
-		CBDW_BUFADDR(bdp, virt_to_bus(NULL));
-		CBDW_DATLEN(bdp, 0);
-		CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
-	}
-
-	/*
-	 * Enable big endian and don't care about SDMA FC. 
-	 */
-	FW(fecp, fun_code, 0x78000000);
-
-	/*
-	 * Set MII speed. 
-	 */
-	FW(fecp, mii_speed, fep->fec_phy_speed);
-
-	/*
-	 * Clear any outstanding interrupt. 
-	 */
-	FW(fecp, ievent, 0xffc0);
-	FW(fecp, ivec, (fpi->fec_irq / 2) << 29);
-
-	/*
-	 * adjust to speed (only for DUET & RMII) 
-	 */
-#ifdef CONFIG_DUET
-	cptr = in_be32(&immap->im_cpm.cp_cptr);
-	switch (fpi->fec_no) {
-	case 0:
-		/*
-		 * check if in RMII mode 
-		 */
-		if ((cptr & 0x100) == 0)
-			break;
-
-		if (speed == 10)
-			cptr |= 0x0000010;
-		else if (speed == 100)
-			cptr &= ~0x0000010;
-		break;
-	case 1:
-		/*
-		 * check if in RMII mode 
-		 */
-		if ((cptr & 0x80) == 0)
-			break;
-
-		if (speed == 10)
-			cptr |= 0x0000008;
-		else if (speed == 100)
-			cptr &= ~0x0000008;
-		break;
-	default:
-		break;
-	}
-	out_be32(&immap->im_cpm.cp_cptr, cptr);
-#endif
-
-	FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE);	/* MII enable */
-	/*
-	 * adjust to duplex mode 
-	 */
-	if (duplex) {
-		FC(fecp, r_cntrl, FEC_RCNTRL_DRT);
-		FS(fecp, x_cntrl, FEC_TCNTRL_FDEN);	/* FD enable */
-	} else {
-		FS(fecp, r_cntrl, FEC_RCNTRL_DRT);
-		FC(fecp, x_cntrl, FEC_TCNTRL_FDEN);	/* FD disable */
-	}
-
-	/*
-	 * Enable interrupts we wish to service. 
-	 */
-	FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB |
-	   FEC_ENET_RXF | FEC_ENET_RXB);
-
-	/*
-	 * And last, enable the transmit and receive processing. 
-	 */
-	FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
-	FW(fecp, r_des_active, 0x01000000);
-}
-
-void fec_stop(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	fec_t *fecp = fep->fecp;
-	struct sk_buff *skb;
-	int i;
-
-	if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0)
-		return;		/* already down */
-
-	FW(fecp, x_cntrl, 0x01);	/* Graceful transmit stop */
-	for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) &&
-	     i < FEC_RESET_DELAY; i++)
-		udelay(1);
-
-	if (i == FEC_RESET_DELAY)
-		printk(KERN_WARNING DRV_MODULE_NAME
-		       ": %s FEC timeout on graceful transmit stop\n",
-		       dev->name);
-	/*
-	 * Disable FEC. Let only MII interrupts. 
-	 */
-	FW(fecp, imask, 0);
-	FW(fecp, ecntrl, ~FEC_ECNTRL_ETHER_EN);
-
-	/*
-	 * Reset SKB transmit buffers.  
-	 */
-	for (i = 0; i < fep->tx_ring; i++) {
-		if ((skb = fep->tx_skbuff[i]) == NULL)
-			continue;
-		fep->tx_skbuff[i] = NULL;
-		dev_kfree_skb(skb);
-	}
-
-	/*
-	 * Reset SKB receive buffers 
-	 */
-	for (i = 0; i < fep->rx_ring; i++) {
-		if ((skb = fep->rx_skbuff[i]) == NULL)
-			continue;
-		fep->rx_skbuff[i] = NULL;
-		dev_kfree_skb(skb);
-	}
-}
-
-/* common receive function */
-static int fec_enet_rx_common(struct fec_enet_private *ep,
-			      struct net_device *dev, int budget)
-{
-	fec_t *fecp = fep->fecp;
-	const struct fec_platform_info *fpi = fep->fpi;
-	cbd_t *bdp;
-	struct sk_buff *skb, *skbn, *skbt;
-	int received = 0;
-	__u16 pkt_len, sc;
-	int curidx;
-
-	/*
-	 * First, grab all of the stats for the incoming packet.
-	 * These get messed up if we get called due to a busy condition.
-	 */
-	bdp = fep->cur_rx;
-
-	/* clear RX status bits for napi*/
-	if (fpi->use_napi)
-		FW(fecp, ievent, FEC_ENET_RXF | FEC_ENET_RXB);
-
-	while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
-
-		curidx = bdp - fep->rx_bd_base;
-
-		/*
-		 * Since we have allocated space to hold a complete frame,
-		 * the last indicator should be set.
-		 */
-		if ((sc & BD_ENET_RX_LAST) == 0)
-			printk(KERN_WARNING DRV_MODULE_NAME
-			       ": %s rcv is not +last\n",
-			       dev->name);
-
-		/*
-		 * Check for errors. 
-		 */
-		if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
-			  BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
-			fep->stats.rx_errors++;
-			/* Frame too long or too short. */
-			if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
-				fep->stats.rx_length_errors++;
-			/* Frame alignment */
-			if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
-				fep->stats.rx_frame_errors++;
-			/* CRC Error */
-			if (sc & BD_ENET_RX_CR)
-				fep->stats.rx_crc_errors++;
-			/* FIFO overrun */
-			if (sc & BD_ENET_RX_OV)
-				fep->stats.rx_crc_errors++;
-
-			skbn = fep->rx_skbuff[curidx];
-			BUG_ON(skbn == NULL);
-
-		} else {
-			skb = fep->rx_skbuff[curidx];
-			BUG_ON(skb == NULL);
-
-			/*
-			 * Process the incoming frame.
-			 */
-			fep->stats.rx_packets++;
-			pkt_len = CBDR_DATLEN(bdp) - 4;	/* remove CRC */
-			fep->stats.rx_bytes += pkt_len + 4;
-
-			if (pkt_len <= fpi->rx_copybreak) {
-				/* +2 to make IP header L1 cache aligned */
-				skbn = dev_alloc_skb(pkt_len + 2);
-				if (skbn != NULL) {
-					skb_reserve(skbn, 2);	/* align IP header */
-					skb_copy_from_linear_data(skb,
-								  skbn->data,
-								  pkt_len);
-					/* swap */
-					skbt = skb;
-					skb = skbn;
-					skbn = skbt;
-				}
-			} else
-				skbn = dev_alloc_skb(ENET_RX_FRSIZE);
-
-			if (skbn != NULL) {
-				skb_put(skb, pkt_len);	/* Make room */
-				skb->protocol = eth_type_trans(skb, dev);
-				received++;
-				if (!fpi->use_napi)
-					netif_rx(skb);
-				else
-					netif_receive_skb(skb);
-			} else {
-				printk(KERN_WARNING DRV_MODULE_NAME
-				       ": %s Memory squeeze, dropping packet.\n",
-				       dev->name);
-				fep->stats.rx_dropped++;
-				skbn = skb;
-			}
-		}
-
-		fep->rx_skbuff[curidx] = skbn;
-		CBDW_BUFADDR(bdp, dma_map_single(NULL, skbn->data,
-						 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
-						 DMA_FROM_DEVICE));
-		CBDW_DATLEN(bdp, 0);
-		CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
-
-		/*
-		 * Update BD pointer to next entry. 
-		 */
-		if ((sc & BD_ENET_RX_WRAP) == 0)
-			bdp++;
-		else
-			bdp = fep->rx_bd_base;
-
-		/*
-		 * Doing this here will keep the FEC running while we process
-		 * incoming frames.  On a heavily loaded network, we should be
-		 * able to keep up at the expense of system resources.
-		 */
-		FW(fecp, r_des_active, 0x01000000);
-
-		if (received >= budget)
-			break;
-
-	}
-
-	fep->cur_rx = bdp;
-
-	if (fpi->use_napi) {
-		if (received < budget) {
-			netif_rx_complete(dev, &fep->napi);
-
-			/* enable RX interrupt bits */
-			FS(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB);
-		}
-	}
-
-	return received;
-}
-
-static void fec_enet_tx(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	cbd_t *bdp;
-	struct sk_buff *skb;
-	int dirtyidx, do_wake;
-	__u16 sc;
-
-	spin_lock(&fep->lock);
-	bdp = fep->dirty_tx;
-
-	do_wake = 0;
-	while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
-
-		dirtyidx = bdp - fep->tx_bd_base;
-
-		if (fep->tx_free == fep->tx_ring)
-			break;
-
-		skb = fep->tx_skbuff[dirtyidx];
-
-		/*
-		 * Check for errors. 
-		 */
-		if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
-			  BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
-			fep->stats.tx_errors++;
-			if (sc & BD_ENET_TX_HB)	/* No heartbeat */
-				fep->stats.tx_heartbeat_errors++;
-			if (sc & BD_ENET_TX_LC)	/* Late collision */
-				fep->stats.tx_window_errors++;
-			if (sc & BD_ENET_TX_RL)	/* Retrans limit */
-				fep->stats.tx_aborted_errors++;
-			if (sc & BD_ENET_TX_UN)	/* Underrun */
-				fep->stats.tx_fifo_errors++;
-			if (sc & BD_ENET_TX_CSL)	/* Carrier lost */
-				fep->stats.tx_carrier_errors++;
-		} else
-			fep->stats.tx_packets++;
-
-		if (sc & BD_ENET_TX_READY)
-			printk(KERN_WARNING DRV_MODULE_NAME
-			       ": %s HEY! Enet xmit interrupt and TX_READY.\n",
-			       dev->name);
-
-		/*
-		 * Deferred means some collisions occurred during transmit,
-		 * but we eventually sent the packet OK.
-		 */
-		if (sc & BD_ENET_TX_DEF)
-			fep->stats.collisions++;
-
-		/*
-		 * Free the sk buffer associated with this last transmit. 
-		 */
-		dev_kfree_skb_irq(skb);
-		fep->tx_skbuff[dirtyidx] = NULL;
-
-		/*
-		 * Update pointer to next buffer descriptor to be transmitted. 
-		 */
-		if ((sc & BD_ENET_TX_WRAP) == 0)
-			bdp++;
-		else
-			bdp = fep->tx_bd_base;
-
-		/*
-		 * Since we have freed up a buffer, the ring is no longer
-		 * full.
-		 */
-		if (!fep->tx_free++)
-			do_wake = 1;
-	}
-
-	fep->dirty_tx = bdp;
-
-	spin_unlock(&fep->lock);
-
-	if (do_wake && netif_queue_stopped(dev))
-		netif_wake_queue(dev);
-}
-
-/*
- * The interrupt handler.
- * This is called from the MPC core interrupt.
- */
-static irqreturn_t
-fec_enet_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct fec_enet_private *fep;
-	const struct fec_platform_info *fpi;
-	fec_t *fecp;
-	__u32 int_events;
-	__u32 int_events_napi;
-
-	if (unlikely(dev == NULL))
-		return IRQ_NONE;
-
-	fep = netdev_priv(dev);
-	fecp = fep->fecp;
-	fpi = fep->fpi;
-
-	/*
-	 * Get the interrupt events that caused us to be here.
-	 */
-	while ((int_events = FR(fecp, ievent) & FR(fecp, imask)) != 0) {
-
-		if (!fpi->use_napi)
-			FW(fecp, ievent, int_events);
-		else {
-			int_events_napi = int_events & ~(FEC_ENET_RXF | FEC_ENET_RXB);
-			FW(fecp, ievent, int_events_napi);
-		}
-
-		if ((int_events & (FEC_ENET_HBERR | FEC_ENET_BABR |
-				   FEC_ENET_BABT | FEC_ENET_EBERR)) != 0)
-			printk(KERN_WARNING DRV_MODULE_NAME
-			       ": %s FEC ERROR(s) 0x%x\n",
-			       dev->name, int_events);
-
-		if ((int_events & FEC_ENET_RXF) != 0) {
-			if (!fpi->use_napi)
-				fec_enet_rx_common(fep, dev, ~0);
-			else {
-				if (netif_rx_schedule_prep(dev, &fep->napi)) {
-					/* disable rx interrupts */
-					FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB);
-					__netif_rx_schedule(dev, &fep->napi);
-				} else {
-					printk(KERN_ERR DRV_MODULE_NAME
-					       ": %s driver bug! interrupt while in poll!\n",
-					       dev->name);
-					FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB);
-				}
-			}
-		}
-
-		if ((int_events & FEC_ENET_TXF) != 0)
-			fec_enet_tx(dev);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/* This interrupt occurs when the PHY detects a link change. */
-static irqreturn_t
-fec_mii_link_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct fec_enet_private *fep;
-	const struct fec_platform_info *fpi;
-
-	if (unlikely(dev == NULL))
-		return IRQ_NONE;
-
-	fep = netdev_priv(dev);
-	fpi = fep->fpi;
-
-	if (!fpi->use_mdio)
-		return IRQ_NONE;
-
-	/*
-	 * Acknowledge the interrupt if possible. If we have not
-	 * found the PHY yet we can't process or acknowledge the
-	 * interrupt now. Instead we ignore this interrupt for now,
-	 * which we can do since it is edge triggered. It will be
-	 * acknowledged later by fec_enet_open().
-	 */
-	if (!fep->phy)
-		return IRQ_NONE;
-
-	fec_mii_ack_int(dev);
-	fec_mii_link_status_change_check(dev, 0);
-
-	return IRQ_HANDLED;
-}
-
-
-/**********************************************************************************/
-
-static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	fec_t *fecp = fep->fecp;
-	cbd_t *bdp;
-	int curidx;
-	unsigned long flags;
-
-	spin_lock_irqsave(&fep->tx_lock, flags);
-
-	/*
-	 * Fill in a Tx ring entry 
-	 */
-	bdp = fep->cur_tx;
-
-	if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
-		netif_stop_queue(dev);
-		spin_unlock_irqrestore(&fep->tx_lock, flags);
-
-		/*
-		 * Ooops.  All transmit buffers are full.  Bail out.
-		 * This should not happen, since the tx queue should be stopped.
-		 */
-		printk(KERN_WARNING DRV_MODULE_NAME
-		       ": %s tx queue full!.\n", dev->name);
-		return 1;
-	}
-
-	curidx = bdp - fep->tx_bd_base;
-	/*
-	 * Clear all of the status flags. 
-	 */
-	CBDC_SC(bdp, BD_ENET_TX_STATS);
-
-	/*
-	 * Save skb pointer. 
-	 */
-	fep->tx_skbuff[curidx] = skb;
-
-	fep->stats.tx_bytes += skb->len;
-
-	/*
-	 * Push the data cache so the CPM does not get stale memory data. 
-	 */
-	CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data,
-					 skb->len, DMA_TO_DEVICE));
-	CBDW_DATLEN(bdp, skb->len);
-
-	dev->trans_start = jiffies;
-
-	/*
-	 * If this was the last BD in the ring, start at the beginning again. 
-	 */
-	if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
-		fep->cur_tx++;
-	else
-		fep->cur_tx = fep->tx_bd_base;
-
-	if (!--fep->tx_free)
-		netif_stop_queue(dev);
-
-	/*
-	 * Trigger transmission start 
-	 */
-	CBDS_SC(bdp, BD_ENET_TX_READY | BD_ENET_TX_INTR |
-		BD_ENET_TX_LAST | BD_ENET_TX_TC);
-	FW(fecp, x_des_active, 0x01000000);
-
-	spin_unlock_irqrestore(&fep->tx_lock, flags);
-
-	return 0;
-}
-
-static void fec_timeout(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-
-	fep->stats.tx_errors++;
-
-	if (fep->tx_free)
-		netif_wake_queue(dev);
-
-	/* check link status again */
-	fec_mii_link_status_change_check(dev, 0);
-}
-
-static int fec_enet_open(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	const struct fec_platform_info *fpi = fep->fpi;
-	unsigned long flags;
-
-	napi_enable(&fep->napi);
-
-	/* Install our interrupt handler. */
-	if (request_irq(fpi->fec_irq, fec_enet_interrupt, 0, "fec", dev) != 0) {
-		printk(KERN_ERR DRV_MODULE_NAME
-		       ": %s Could not allocate FEC IRQ!", dev->name);
-		napi_disable(&fep->napi);
-		return -EINVAL;
-	}
-
-	/* Install our phy interrupt handler */
-	if (fpi->phy_irq != -1 && 
-		request_irq(fpi->phy_irq, fec_mii_link_interrupt, 0, "fec-phy",
-				dev) != 0) {
-		printk(KERN_ERR DRV_MODULE_NAME
-		       ": %s Could not allocate PHY IRQ!", dev->name);
-		free_irq(fpi->fec_irq, dev);
-		napi_disable(&fep->napi);
-		return -EINVAL;
-	}
-
-	if (fpi->use_mdio) {
-		fec_mii_startup(dev);
-		netif_carrier_off(dev);
-		fec_mii_link_status_change_check(dev, 1);
-	} else {
-		spin_lock_irqsave(&fep->lock, flags);
-		fec_restart(dev, 1, 100);	/* XXX this sucks */
-		spin_unlock_irqrestore(&fep->lock, flags);
-
-		netif_carrier_on(dev);
-		netif_start_queue(dev);
-	}
-	return 0;
-}
-
-static int fec_enet_close(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	const struct fec_platform_info *fpi = fep->fpi;
-	unsigned long flags;
-
-	netif_stop_queue(dev);
-	napi_disable(&fep->napi);
-	netif_carrier_off(dev);
-
-	if (fpi->use_mdio)
-		fec_mii_shutdown(dev);
-
-	spin_lock_irqsave(&fep->lock, flags);
-	fec_stop(dev);
-	spin_unlock_irqrestore(&fep->lock, flags);
-
-	/* release any irqs */
-	if (fpi->phy_irq != -1)
-		free_irq(fpi->phy_irq, dev);
-	free_irq(fpi->fec_irq, dev);
-
-	return 0;
-}
-
-static struct net_device_stats *fec_enet_get_stats(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	return &fep->stats;
-}
-
-static int fec_enet_poll(struct napi_struct *napi, int budget)
-{
-	struct fec_enet_private *fep = container_of(napi, struct fec_enet_private, napi);
-	struct net_device *dev = fep->dev;
-
-	return fec_enet_rx_common(fep, dev, budget);
-}
-
-/*************************************************************************/
-
-static void fec_get_drvinfo(struct net_device *dev,
-			    struct ethtool_drvinfo *info)
-{
-	strcpy(info->driver, DRV_MODULE_NAME);
-	strcpy(info->version, DRV_MODULE_VERSION);
-}
-
-static int fec_get_regs_len(struct net_device *dev)
-{
-	return sizeof(fec_t);
-}
-
-static void fec_get_regs(struct net_device *dev, struct ethtool_regs *regs,
-			 void *p)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	unsigned long flags;
-
-	if (regs->len < sizeof(fec_t))
-		return;
-
-	regs->version = 0;
-	spin_lock_irqsave(&fep->lock, flags);
-	memcpy_fromio(p, fep->fecp, sizeof(fec_t));
-	spin_unlock_irqrestore(&fep->lock, flags);
-}
-
-static int fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	unsigned long flags;
-	int rc;
-
-	spin_lock_irqsave(&fep->lock, flags);
-	rc = mii_ethtool_gset(&fep->mii_if, cmd);
-	spin_unlock_irqrestore(&fep->lock, flags);
-
-	return rc;
-}
-
-static int fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	unsigned long flags;
-	int rc;
-
-	spin_lock_irqsave(&fep->lock, flags);
-	rc = mii_ethtool_sset(&fep->mii_if, cmd);
-	spin_unlock_irqrestore(&fep->lock, flags);
-
-	return rc;
-}
-
-static int fec_nway_reset(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	return mii_nway_restart(&fep->mii_if);
-}
-
-static __u32 fec_get_msglevel(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	return fep->msg_enable;
-}
-
-static void fec_set_msglevel(struct net_device *dev, __u32 value)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	fep->msg_enable = value;
-}
-
-static const struct ethtool_ops fec_ethtool_ops = {
-	.get_drvinfo	= fec_get_drvinfo,
-	.get_regs_len	= fec_get_regs_len,
-	.get_settings	= fec_get_settings,
-	.set_settings	= fec_set_settings,
-	.nway_reset	= fec_nway_reset,
-	.get_link	= ethtool_op_get_link,
-	.get_msglevel	= fec_get_msglevel,
-	.set_msglevel	= fec_set_msglevel,
-	.set_tx_csum	= ethtool_op_set_tx_csum,	/* local! */
-	.set_sg		= ethtool_op_set_sg,
-	.get_regs	= fec_get_regs,
-};
-
-static int fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
-	unsigned long flags;
-	int rc;
-
-	if (!netif_running(dev))
-		return -EINVAL;
-
-	spin_lock_irqsave(&fep->lock, flags);
-	rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL);
-	spin_unlock_irqrestore(&fep->lock, flags);
-	return rc;
-}
-
-int fec_8xx_init_one(const struct fec_platform_info *fpi,
-		     struct net_device **devp)
-{
-	immap_t *immap = (immap_t *) IMAP_ADDR;
-	static int fec_8xx_version_printed = 0;
-	struct net_device *dev = NULL;
-	struct fec_enet_private *fep = NULL;
-	fec_t *fecp = NULL;
-	int i;
-	int err = 0;
-	int registered = 0;
-	__u32 siel;
-
-	*devp = NULL;
-
-	switch (fpi->fec_no) {
-	case 0:
-		fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec;
-		break;
-#ifdef CONFIG_DUET
-	case 1:
-		fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec2;
-		break;
-#endif
-	default:
-		return -EINVAL;
-	}
-
-	if (fec_8xx_version_printed++ == 0)
-		printk(KERN_INFO "%s", version);
-
-	i = sizeof(*fep) + (sizeof(struct sk_buff **) *
-			    (fpi->rx_ring + fpi->tx_ring));
-
-	dev = alloc_etherdev(i);
-	if (!dev) {
-		err = -ENOMEM;
-		goto err;
-	}
-
-	fep = netdev_priv(dev);
-	fep->dev = dev;
-
-	/* partial reset of FEC */
-	fec_whack_reset(fecp);
-
-	/* point rx_skbuff, tx_skbuff */
-	fep->rx_skbuff = (struct sk_buff **)&fep[1];
-	fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
-
-	fep->fecp = fecp;
-	fep->fpi = fpi;
-
-	/* init locks */
-	spin_lock_init(&fep->lock);
-	spin_lock_init(&fep->tx_lock);
-
-	/*
-	 * Set the Ethernet address. 
-	 */
-	for (i = 0; i < 6; i++)
-		dev->dev_addr[i] = fpi->macaddr[i];
-
-	fep->ring_base = dma_alloc_coherent(NULL,
-					    (fpi->tx_ring + fpi->rx_ring) *
-					    sizeof(cbd_t), &fep->ring_mem_addr,
-					    GFP_KERNEL);
-	if (fep->ring_base == NULL) {
-		printk(KERN_ERR DRV_MODULE_NAME
-		       ": %s dma alloc failed.\n", dev->name);
-		err = -ENOMEM;
-		goto err;
-	}
-
-	/*
-	 * Set receive and transmit descriptor base.
-	 */
-	fep->rx_bd_base = fep->ring_base;
-	fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
-
-	/* initialize ring size variables */
-	fep->tx_ring = fpi->tx_ring;
-	fep->rx_ring = fpi->rx_ring;
-
-	/* SIU interrupt */
-	if (fpi->phy_irq != -1 &&
-		(fpi->phy_irq >= SIU_IRQ0 && fpi->phy_irq < SIU_LEVEL7)) {
-
-		siel = in_be32(&immap->im_siu_conf.sc_siel);
-		if ((fpi->phy_irq & 1) == 0)
-			siel |= (0x80000000 >> fpi->phy_irq);
-		else
-			siel &= ~(0x80000000 >> (fpi->phy_irq & ~1));
-		out_be32(&immap->im_siu_conf.sc_siel, siel);
-	}
-
-	/*
-	 * The FEC Ethernet specific entries in the device structure. 
-	 */
-	dev->open = fec_enet_open;
-	dev->hard_start_xmit = fec_enet_start_xmit;
-	dev->tx_timeout = fec_timeout;
-	dev->watchdog_timeo = TX_TIMEOUT;
-	dev->stop = fec_enet_close;
-	dev->get_stats = fec_enet_get_stats;
-	dev->set_multicast_list = fec_set_multicast_list;
-	dev->set_mac_address = fec_set_mac_address;
-	netif_napi_add(dev, &fec->napi,
-		       fec_enet_poll, fpi->napi_weight);
-
-	dev->ethtool_ops = &fec_ethtool_ops;
-	dev->do_ioctl = fec_ioctl;
-
-	fep->fec_phy_speed =
-	    ((((fpi->sys_clk + 4999999) / 2500000) / 2) & 0x3F) << 1;
-
-	init_timer(&fep->phy_timer_list);
-
-	/* partial reset of FEC so that only MII works */
-	FW(fecp, mii_speed, fep->fec_phy_speed);
-	FW(fecp, ievent, 0xffc0);
-	FW(fecp, ivec, (fpi->fec_irq / 2) << 29);
-	FW(fecp, imask, 0);
-	FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE);	/* MII enable */
-	FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
-
-	netif_carrier_off(dev);
-
-	err = register_netdev(dev);
-	if (err != 0)
-		goto err;
-	registered = 1;
-
-	if (fpi->use_mdio) {
-		fep->mii_if.dev = dev;
-		fep->mii_if.mdio_read = fec_mii_read;
-		fep->mii_if.mdio_write = fec_mii_write;
-		fep->mii_if.phy_id_mask = 0x1f;
-		fep->mii_if.reg_num_mask = 0x1f;
-		fep->mii_if.phy_id = fec_mii_phy_id_detect(dev);
-	}
-
-	*devp = dev;
-
-	return 0;
-
-      err:
-	if (dev != NULL) {
-		if (fecp != NULL)
-			fec_whack_reset(fecp);
-
-		if (registered)
-			unregister_netdev(dev);
-
-		if (fep != NULL) {
-			if (fep->ring_base)
-				dma_free_coherent(NULL,
-						  (fpi->tx_ring +
-						   fpi->rx_ring) *
-						  sizeof(cbd_t), fep->ring_base,
-						  fep->ring_mem_addr);
-		}
-		free_netdev(dev);
-	}
-	return err;
-}
-
-int fec_8xx_cleanup_one(struct net_device *dev)
-{
-	struct fec_enet_private *fep = netdev_priv(dev);
-	fec_t *fecp = fep->fecp;
-	const struct fec_platform_info *fpi = fep->fpi;
-
-	fec_whack_reset(fecp);
-
-	unregister_netdev(dev);
-
-	dma_free_coherent(NULL, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
-			  fep->ring_base, fep->ring_mem_addr);
-
-	free_netdev(dev);
-
-	return 0;
-}
-
-/**************************************************************************************/
-/**************************************************************************************/
-/**************************************************************************************/
-
-static int __init fec_8xx_init(void)
-{
-	return fec_8xx_platform_init();
-}
-
-static void __exit fec_8xx_cleanup(void)
-{
-	fec_8xx_platform_cleanup();
-}
-
-/**************************************************************************************/
-/**************************************************************************************/
-/**************************************************************************************/
-
-module_init(fec_8xx_init);
-module_exit(fec_8xx_cleanup);