cassini/niu/sun*: Move the Sun drivers

Moves the Sun drivers into drivers/net/ethernet/sun/ and make
the necessary Kconfig and Makefile changes.

Oliver Hartkopp <socketcan@hartkopp.net> suggested removing the
sun* prefix on the driver names.  This type of change I will
leave up to the driver maintainers.

CC: Sam Creasey <sammy@sammy.net>
CC: Adrian Sun <asun@darksunrising.com>
CC: Benjamin Herrenscmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1007 deletions

diff --git a/drivers/net/sunqe.c b/drivers/net/sunqe.c
deleted file mode 100644
index 209c7f8df003..000000000000
--- a/drivers/net/sunqe.c
+++ /dev/null
@@ -1,1007 +0,0 @@
-/* sunqe.c: Sparc QuadEthernet 10baseT SBUS card driver.
- *          Once again I am out to prove that every ethernet
- *          controller out there can be most efficiently programmed
- *          if you make it look like a LANCE.
- *
- * Copyright (C) 1996, 1999, 2003, 2006, 2008 David S. Miller (davem@davemloft.net)
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/crc32.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/ethtool.h>
-#include <linux/bitops.h>
-#include <linux/dma-mapping.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/byteorder.h>
-#include <asm/idprom.h>
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-#include <asm/auxio.h>
-#include <asm/pgtable.h>
-#include <asm/irq.h>
-
-#include "sunqe.h"
-
-#define DRV_NAME	"sunqe"
-#define DRV_VERSION	"4.1"
-#define DRV_RELDATE	"August 27, 2008"
-#define DRV_AUTHOR	"David S. Miller (davem@davemloft.net)"
-
-static char version[] =
-	DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
-
-MODULE_VERSION(DRV_VERSION);
-MODULE_AUTHOR(DRV_AUTHOR);
-MODULE_DESCRIPTION("Sun QuadEthernet 10baseT SBUS card driver");
-MODULE_LICENSE("GPL");
-
-static struct sunqec *root_qec_dev;
-
-static void qe_set_multicast(struct net_device *dev);
-
-#define QEC_RESET_TRIES 200
-
-static inline int qec_global_reset(void __iomem *gregs)
-{
-	int tries = QEC_RESET_TRIES;
-
-	sbus_writel(GLOB_CTRL_RESET, gregs + GLOB_CTRL);
-	while (--tries) {
-		u32 tmp = sbus_readl(gregs + GLOB_CTRL);
-		if (tmp & GLOB_CTRL_RESET) {
-			udelay(20);
-			continue;
-		}
-		break;
-	}
-	if (tries)
-		return 0;
-	printk(KERN_ERR "QuadEther: AIEEE cannot reset the QEC!\n");
-	return -1;
-}
-
-#define MACE_RESET_RETRIES 200
-#define QE_RESET_RETRIES   200
-
-static inline int qe_stop(struct sunqe *qep)
-{
-	void __iomem *cregs = qep->qcregs;
-	void __iomem *mregs = qep->mregs;
-	int tries;
-
-	/* Reset the MACE, then the QEC channel. */
-	sbus_writeb(MREGS_BCONFIG_RESET, mregs + MREGS_BCONFIG);
-	tries = MACE_RESET_RETRIES;
-	while (--tries) {
-		u8 tmp = sbus_readb(mregs + MREGS_BCONFIG);
-		if (tmp & MREGS_BCONFIG_RESET) {
-			udelay(20);
-			continue;
-		}
-		break;
-	}
-	if (!tries) {
-		printk(KERN_ERR "QuadEther: AIEEE cannot reset the MACE!\n");
-		return -1;
-	}
-
-	sbus_writel(CREG_CTRL_RESET, cregs + CREG_CTRL);
-	tries = QE_RESET_RETRIES;
-	while (--tries) {
-		u32 tmp = sbus_readl(cregs + CREG_CTRL);
-		if (tmp & CREG_CTRL_RESET) {
-			udelay(20);
-			continue;
-		}
-		break;
-	}
-	if (!tries) {
-		printk(KERN_ERR "QuadEther: Cannot reset QE channel!\n");
-		return -1;
-	}
-	return 0;
-}
-
-static void qe_init_rings(struct sunqe *qep)
-{
-	struct qe_init_block *qb = qep->qe_block;
-	struct sunqe_buffers *qbufs = qep->buffers;
-	__u32 qbufs_dvma = qep->buffers_dvma;
-	int i;
-
-	qep->rx_new = qep->rx_old = qep->tx_new = qep->tx_old = 0;
-	memset(qb, 0, sizeof(struct qe_init_block));
-	memset(qbufs, 0, sizeof(struct sunqe_buffers));
-	for (i = 0; i < RX_RING_SIZE; i++) {
-		qb->qe_rxd[i].rx_addr = qbufs_dvma + qebuf_offset(rx_buf, i);
-		qb->qe_rxd[i].rx_flags =
-			(RXD_OWN | ((RXD_PKT_SZ) & RXD_LENGTH));
-	}
-}
-
-static int qe_init(struct sunqe *qep, int from_irq)
-{
-	struct sunqec *qecp = qep->parent;
-	void __iomem *cregs = qep->qcregs;
-	void __iomem *mregs = qep->mregs;
-	void __iomem *gregs = qecp->gregs;
-	unsigned char *e = &qep->dev->dev_addr[0];
-	u32 tmp;
-	int i;
-
-	/* Shut it up. */
-	if (qe_stop(qep))
-		return -EAGAIN;
-
-	/* Setup initial rx/tx init block pointers. */
-	sbus_writel(qep->qblock_dvma + qib_offset(qe_rxd, 0), cregs + CREG_RXDS);
-	sbus_writel(qep->qblock_dvma + qib_offset(qe_txd, 0), cregs + CREG_TXDS);
-
-	/* Enable/mask the various irq's. */
-	sbus_writel(0, cregs + CREG_RIMASK);
-	sbus_writel(1, cregs + CREG_TIMASK);
-
-	sbus_writel(0, cregs + CREG_QMASK);
-	sbus_writel(CREG_MMASK_RXCOLL, cregs + CREG_MMASK);
-
-	/* Setup the FIFO pointers into QEC local memory. */
-	tmp = qep->channel * sbus_readl(gregs + GLOB_MSIZE);
-	sbus_writel(tmp, cregs + CREG_RXRBUFPTR);
-	sbus_writel(tmp, cregs + CREG_RXWBUFPTR);
-
-	tmp = sbus_readl(cregs + CREG_RXRBUFPTR) +
-		sbus_readl(gregs + GLOB_RSIZE);
-	sbus_writel(tmp, cregs + CREG_TXRBUFPTR);
-	sbus_writel(tmp, cregs + CREG_TXWBUFPTR);
-
-	/* Clear the channel collision counter. */
-	sbus_writel(0, cregs + CREG_CCNT);
-
-	/* For 10baseT, inter frame space nor throttle seems to be necessary. */
-	sbus_writel(0, cregs + CREG_PIPG);
-
-	/* Now dork with the AMD MACE. */
-	sbus_writeb(MREGS_PHYCONFIG_AUTO, mregs + MREGS_PHYCONFIG);
-	sbus_writeb(MREGS_TXFCNTL_AUTOPAD, mregs + MREGS_TXFCNTL);
-	sbus_writeb(0, mregs + MREGS_RXFCNTL);
-
-	/* The QEC dma's the rx'd packets from local memory out to main memory,
-	 * and therefore it interrupts when the packet reception is "complete".
-	 * So don't listen for the MACE talking about it.
-	 */
-	sbus_writeb(MREGS_IMASK_COLL | MREGS_IMASK_RXIRQ, mregs + MREGS_IMASK);
-	sbus_writeb(MREGS_BCONFIG_BSWAP | MREGS_BCONFIG_64TS, mregs + MREGS_BCONFIG);
-	sbus_writeb((MREGS_FCONFIG_TXF16 | MREGS_FCONFIG_RXF32 |
-		     MREGS_FCONFIG_RFWU | MREGS_FCONFIG_TFWU),
-		    mregs + MREGS_FCONFIG);
-
-	/* Only usable interface on QuadEther is twisted pair. */
-	sbus_writeb(MREGS_PLSCONFIG_TP, mregs + MREGS_PLSCONFIG);
-
-	/* Tell MACE we are changing the ether address. */
-	sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_PARESET,
-		    mregs + MREGS_IACONFIG);
-	while ((sbus_readb(mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
-		barrier();
-	sbus_writeb(e[0], mregs + MREGS_ETHADDR);
-	sbus_writeb(e[1], mregs + MREGS_ETHADDR);
-	sbus_writeb(e[2], mregs + MREGS_ETHADDR);
-	sbus_writeb(e[3], mregs + MREGS_ETHADDR);
-	sbus_writeb(e[4], mregs + MREGS_ETHADDR);
-	sbus_writeb(e[5], mregs + MREGS_ETHADDR);
-
-	/* Clear out the address filter. */
-	sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
-		    mregs + MREGS_IACONFIG);
-	while ((sbus_readb(mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
-		barrier();
-	for (i = 0; i < 8; i++)
-		sbus_writeb(0, mregs + MREGS_FILTER);
-
-	/* Address changes are now complete. */
-	sbus_writeb(0, mregs + MREGS_IACONFIG);
-
-	qe_init_rings(qep);
-
-	/* Wait a little bit for the link to come up... */
-	mdelay(5);
-	if (!(sbus_readb(mregs + MREGS_PHYCONFIG) & MREGS_PHYCONFIG_LTESTDIS)) {
-		int tries = 50;
-
-		while (--tries) {
-			u8 tmp;
-
-			mdelay(5);
-			barrier();
-			tmp = sbus_readb(mregs + MREGS_PHYCONFIG);
-			if ((tmp & MREGS_PHYCONFIG_LSTAT) != 0)
-				break;
-		}
-		if (tries == 0)
-			printk(KERN_NOTICE "%s: Warning, link state is down.\n", qep->dev->name);
-	}
-
-	/* Missed packet counter is cleared on a read. */
-	sbus_readb(mregs + MREGS_MPCNT);
-
-	/* Reload multicast information, this will enable the receiver
-	 * and transmitter.
-	 */
-	qe_set_multicast(qep->dev);
-
-	/* QEC should now start to show interrupts. */
-	return 0;
-}
-
-/* Grrr, certain error conditions completely lock up the AMD MACE,
- * so when we get these we _must_ reset the chip.
- */
-static int qe_is_bolixed(struct sunqe *qep, u32 qe_status)
-{
-	struct net_device *dev = qep->dev;
-	int mace_hwbug_workaround = 0;
-
-	if (qe_status & CREG_STAT_EDEFER) {
-		printk(KERN_ERR "%s: Excessive transmit defers.\n", dev->name);
-		dev->stats.tx_errors++;
-	}
-
-	if (qe_status & CREG_STAT_CLOSS) {
-		printk(KERN_ERR "%s: Carrier lost, link down?\n", dev->name);
-		dev->stats.tx_errors++;
-		dev->stats.tx_carrier_errors++;
-	}
-
-	if (qe_status & CREG_STAT_ERETRIES) {
-		printk(KERN_ERR "%s: Excessive transmit retries (more than 16).\n", dev->name);
-		dev->stats.tx_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_LCOLL) {
-		printk(KERN_ERR "%s: Late transmit collision.\n", dev->name);
-		dev->stats.tx_errors++;
-		dev->stats.collisions++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_FUFLOW) {
-		printk(KERN_ERR "%s: Transmit fifo underflow, driver bug.\n", dev->name);
-		dev->stats.tx_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_JERROR) {
-		printk(KERN_ERR "%s: Jabber error.\n", dev->name);
-	}
-
-	if (qe_status & CREG_STAT_BERROR) {
-		printk(KERN_ERR "%s: Babble error.\n", dev->name);
-	}
-
-	if (qe_status & CREG_STAT_CCOFLOW) {
-		dev->stats.tx_errors += 256;
-		dev->stats.collisions += 256;
-	}
-
-	if (qe_status & CREG_STAT_TXDERROR) {
-		printk(KERN_ERR "%s: Transmit descriptor is bogus, driver bug.\n", dev->name);
-		dev->stats.tx_errors++;
-		dev->stats.tx_aborted_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_TXLERR) {
-		printk(KERN_ERR "%s: Transmit late error.\n", dev->name);
-		dev->stats.tx_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_TXPERR) {
-		printk(KERN_ERR "%s: Transmit DMA parity error.\n", dev->name);
-		dev->stats.tx_errors++;
-		dev->stats.tx_aborted_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_TXSERR) {
-		printk(KERN_ERR "%s: Transmit DMA sbus error ack.\n", dev->name);
-		dev->stats.tx_errors++;
-		dev->stats.tx_aborted_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_RCCOFLOW) {
-		dev->stats.rx_errors += 256;
-		dev->stats.collisions += 256;
-	}
-
-	if (qe_status & CREG_STAT_RUOFLOW) {
-		dev->stats.rx_errors += 256;
-		dev->stats.rx_over_errors += 256;
-	}
-
-	if (qe_status & CREG_STAT_MCOFLOW) {
-		dev->stats.rx_errors += 256;
-		dev->stats.rx_missed_errors += 256;
-	}
-
-	if (qe_status & CREG_STAT_RXFOFLOW) {
-		printk(KERN_ERR "%s: Receive fifo overflow.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.rx_over_errors++;
-	}
-
-	if (qe_status & CREG_STAT_RLCOLL) {
-		printk(KERN_ERR "%s: Late receive collision.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.collisions++;
-	}
-
-	if (qe_status & CREG_STAT_FCOFLOW) {
-		dev->stats.rx_errors += 256;
-		dev->stats.rx_frame_errors += 256;
-	}
-
-	if (qe_status & CREG_STAT_CECOFLOW) {
-		dev->stats.rx_errors += 256;
-		dev->stats.rx_crc_errors += 256;
-	}
-
-	if (qe_status & CREG_STAT_RXDROP) {
-		printk(KERN_ERR "%s: Receive packet dropped.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.rx_dropped++;
-		dev->stats.rx_missed_errors++;
-	}
-
-	if (qe_status & CREG_STAT_RXSMALL) {
-		printk(KERN_ERR "%s: Receive buffer too small, driver bug.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.rx_length_errors++;
-	}
-
-	if (qe_status & CREG_STAT_RXLERR) {
-		printk(KERN_ERR "%s: Receive late error.\n", dev->name);
-		dev->stats.rx_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_RXPERR) {
-		printk(KERN_ERR "%s: Receive DMA parity error.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.rx_missed_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (qe_status & CREG_STAT_RXSERR) {
-		printk(KERN_ERR "%s: Receive DMA sbus error ack.\n", dev->name);
-		dev->stats.rx_errors++;
-		dev->stats.rx_missed_errors++;
-		mace_hwbug_workaround = 1;
-	}
-
-	if (mace_hwbug_workaround)
-		qe_init(qep, 1);
-	return mace_hwbug_workaround;
-}
-
-/* Per-QE receive interrupt service routine.  Just like on the happy meal
- * we receive directly into skb's with a small packet copy water mark.
- */
-static void qe_rx(struct sunqe *qep)
-{
-	struct qe_rxd *rxbase = &qep->qe_block->qe_rxd[0];
-	struct net_device *dev = qep->dev;
-	struct qe_rxd *this;
-	struct sunqe_buffers *qbufs = qep->buffers;
-	__u32 qbufs_dvma = qep->buffers_dvma;
-	int elem = qep->rx_new, drops = 0;
-	u32 flags;
-
-	this = &rxbase[elem];
-	while (!((flags = this->rx_flags) & RXD_OWN)) {
-		struct sk_buff *skb;
-		unsigned char *this_qbuf =
-			&qbufs->rx_buf[elem & (RX_RING_SIZE - 1)][0];
-		__u32 this_qbuf_dvma = qbufs_dvma +
-			qebuf_offset(rx_buf, (elem & (RX_RING_SIZE - 1)));
-		struct qe_rxd *end_rxd =
-			&rxbase[(elem+RX_RING_SIZE)&(RX_RING_MAXSIZE-1)];
-		int len = (flags & RXD_LENGTH) - 4;  /* QE adds ether FCS size to len */
-
-		/* Check for errors. */
-		if (len < ETH_ZLEN) {
-			dev->stats.rx_errors++;
-			dev->stats.rx_length_errors++;
-			dev->stats.rx_dropped++;
-		} else {
-			skb = dev_alloc_skb(len + 2);
-			if (skb == NULL) {
-				drops++;
-				dev->stats.rx_dropped++;
-			} else {
-				skb_reserve(skb, 2);
-				skb_put(skb, len);
-				skb_copy_to_linear_data(skb, (unsigned char *) this_qbuf,
-						 len);
-				skb->protocol = eth_type_trans(skb, qep->dev);
-				netif_rx(skb);
-				dev->stats.rx_packets++;
-				dev->stats.rx_bytes += len;
-			}
-		}
-		end_rxd->rx_addr = this_qbuf_dvma;
-		end_rxd->rx_flags = (RXD_OWN | ((RXD_PKT_SZ) & RXD_LENGTH));
-
-		elem = NEXT_RX(elem);
-		this = &rxbase[elem];
-	}
-	qep->rx_new = elem;
-	if (drops)
-		printk(KERN_NOTICE "%s: Memory squeeze, deferring packet.\n", qep->dev->name);
-}
-
-static void qe_tx_reclaim(struct sunqe *qep);
-
-/* Interrupts for all QE's get filtered out via the QEC master controller,
- * so we just run through each qe and check to see who is signaling
- * and thus needs to be serviced.
- */
-static irqreturn_t qec_interrupt(int irq, void *dev_id)
-{
-	struct sunqec *qecp = dev_id;
-	u32 qec_status;
-	int channel = 0;
-
-	/* Latch the status now. */
-	qec_status = sbus_readl(qecp->gregs + GLOB_STAT);
-	while (channel < 4) {
-		if (qec_status & 0xf) {
-			struct sunqe *qep = qecp->qes[channel];
-			u32 qe_status;
-
-			qe_status = sbus_readl(qep->qcregs + CREG_STAT);
-			if (qe_status & CREG_STAT_ERRORS) {
-				if (qe_is_bolixed(qep, qe_status))
-					goto next;
-			}
-			if (qe_status & CREG_STAT_RXIRQ)
-				qe_rx(qep);
-			if (netif_queue_stopped(qep->dev) &&
-			    (qe_status & CREG_STAT_TXIRQ)) {
-				spin_lock(&qep->lock);
-				qe_tx_reclaim(qep);
-				if (TX_BUFFS_AVAIL(qep) > 0) {
-					/* Wake net queue and return to
-					 * lazy tx reclaim.
-					 */
-					netif_wake_queue(qep->dev);
-					sbus_writel(1, qep->qcregs + CREG_TIMASK);
-				}
-				spin_unlock(&qep->lock);
-			}
-	next:
-			;
-		}
-		qec_status >>= 4;
-		channel++;
-	}
-
-	return IRQ_HANDLED;
-}
-
-static int qe_open(struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-
-	qep->mconfig = (MREGS_MCONFIG_TXENAB |
-			MREGS_MCONFIG_RXENAB |
-			MREGS_MCONFIG_MBAENAB);
-	return qe_init(qep, 0);
-}
-
-static int qe_close(struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-
-	qe_stop(qep);
-	return 0;
-}
-
-/* Reclaim TX'd frames from the ring.  This must always run under
- * the IRQ protected qep->lock.
- */
-static void qe_tx_reclaim(struct sunqe *qep)
-{
-	struct qe_txd *txbase = &qep->qe_block->qe_txd[0];
-	int elem = qep->tx_old;
-
-	while (elem != qep->tx_new) {
-		u32 flags = txbase[elem].tx_flags;
-
-		if (flags & TXD_OWN)
-			break;
-		elem = NEXT_TX(elem);
-	}
-	qep->tx_old = elem;
-}
-
-static void qe_tx_timeout(struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-	int tx_full;
-
-	spin_lock_irq(&qep->lock);
-
-	/* Try to reclaim, if that frees up some tx
-	 * entries, we're fine.
-	 */
-	qe_tx_reclaim(qep);
-	tx_full = TX_BUFFS_AVAIL(qep) <= 0;
-
-	spin_unlock_irq(&qep->lock);
-
-	if (! tx_full)
-		goto out;
-
-	printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
-	qe_init(qep, 1);
-
-out:
-	netif_wake_queue(dev);
-}
-
-/* Get a packet queued to go onto the wire. */
-static int qe_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-	struct sunqe_buffers *qbufs = qep->buffers;
-	__u32 txbuf_dvma, qbufs_dvma = qep->buffers_dvma;
-	unsigned char *txbuf;
-	int len, entry;
-
-	spin_lock_irq(&qep->lock);
-
-	qe_tx_reclaim(qep);
-
-	len = skb->len;
-	entry = qep->tx_new;
-
-	txbuf = &qbufs->tx_buf[entry & (TX_RING_SIZE - 1)][0];
-	txbuf_dvma = qbufs_dvma +
-		qebuf_offset(tx_buf, (entry & (TX_RING_SIZE - 1)));
-
-	/* Avoid a race... */
-	qep->qe_block->qe_txd[entry].tx_flags = TXD_UPDATE;
-
-	skb_copy_from_linear_data(skb, txbuf, len);
-
-	qep->qe_block->qe_txd[entry].tx_addr = txbuf_dvma;
-	qep->qe_block->qe_txd[entry].tx_flags =
-		(TXD_OWN | TXD_SOP | TXD_EOP | (len & TXD_LENGTH));
-	qep->tx_new = NEXT_TX(entry);
-
-	/* Get it going. */
-	sbus_writel(CREG_CTRL_TWAKEUP, qep->qcregs + CREG_CTRL);
-
-	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += len;
-
-	if (TX_BUFFS_AVAIL(qep) <= 0) {
-		/* Halt the net queue and enable tx interrupts.
-		 * When the tx queue empties the tx irq handler
-		 * will wake up the queue and return us back to
-		 * the lazy tx reclaim scheme.
-		 */
-		netif_stop_queue(dev);
-		sbus_writel(0, qep->qcregs + CREG_TIMASK);
-	}
-	spin_unlock_irq(&qep->lock);
-
-	dev_kfree_skb(skb);
-
-	return NETDEV_TX_OK;
-}
-
-static void qe_set_multicast(struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-	struct netdev_hw_addr *ha;
-	u8 new_mconfig = qep->mconfig;
-	int i;
-	u32 crc;
-
-	/* Lock out others. */
-	netif_stop_queue(dev);
-
-	if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
-		sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
-			    qep->mregs + MREGS_IACONFIG);
-		while ((sbus_readb(qep->mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
-			barrier();
-		for (i = 0; i < 8; i++)
-			sbus_writeb(0xff, qep->mregs + MREGS_FILTER);
-		sbus_writeb(0, qep->mregs + MREGS_IACONFIG);
-	} else if (dev->flags & IFF_PROMISC) {
-		new_mconfig |= MREGS_MCONFIG_PROMISC;
-	} else {
-		u16 hash_table[4];
-		u8 *hbytes = (unsigned char *) &hash_table[0];
-
-		memset(hash_table, 0, sizeof(hash_table));
-		netdev_for_each_mc_addr(ha, dev) {
-			crc = ether_crc_le(6, ha->addr);
-			crc >>= 26;
-			hash_table[crc >> 4] |= 1 << (crc & 0xf);
-		}
-		/* Program the qe with the new filter value. */
-		sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
-			    qep->mregs + MREGS_IACONFIG);
-		while ((sbus_readb(qep->mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
-			barrier();
-		for (i = 0; i < 8; i++) {
-			u8 tmp = *hbytes++;
-			sbus_writeb(tmp, qep->mregs + MREGS_FILTER);
-		}
-		sbus_writeb(0, qep->mregs + MREGS_IACONFIG);
-	}
-
-	/* Any change of the logical address filter, the physical address,
-	 * or enabling/disabling promiscuous mode causes the MACE to disable
-	 * the receiver.  So we must re-enable them here or else the MACE
-	 * refuses to listen to anything on the network.  Sheesh, took
-	 * me a day or two to find this bug.
-	 */
-	qep->mconfig = new_mconfig;
-	sbus_writeb(qep->mconfig, qep->mregs + MREGS_MCONFIG);
-
-	/* Let us get going again. */
-	netif_wake_queue(dev);
-}
-
-/* Ethtool support... */
-static void qe_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
-	const struct linux_prom_registers *regs;
-	struct sunqe *qep = netdev_priv(dev);
-	struct platform_device *op;
-
-	strcpy(info->driver, "sunqe");
-	strcpy(info->version, "3.0");
-
-	op = qep->op;
-	regs = of_get_property(op->dev.of_node, "reg", NULL);
-	if (regs)
-		sprintf(info->bus_info, "SBUS:%d", regs->which_io);
-
-}
-
-static u32 qe_get_link(struct net_device *dev)
-{
-	struct sunqe *qep = netdev_priv(dev);
-	void __iomem *mregs = qep->mregs;
-	u8 phyconfig;
-
-	spin_lock_irq(&qep->lock);
-	phyconfig = sbus_readb(mregs + MREGS_PHYCONFIG);
-	spin_unlock_irq(&qep->lock);
-
-	return phyconfig & MREGS_PHYCONFIG_LSTAT;
-}
-
-static const struct ethtool_ops qe_ethtool_ops = {
-	.get_drvinfo		= qe_get_drvinfo,
-	.get_link		= qe_get_link,
-};
-
-/* This is only called once at boot time for each card probed. */
-static void qec_init_once(struct sunqec *qecp, struct platform_device *op)
-{
-	u8 bsizes = qecp->qec_bursts;
-
-	if (sbus_can_burst64() && (bsizes & DMA_BURST64)) {
-		sbus_writel(GLOB_CTRL_B64, qecp->gregs + GLOB_CTRL);
-	} else if (bsizes & DMA_BURST32) {
-		sbus_writel(GLOB_CTRL_B32, qecp->gregs + GLOB_CTRL);
-	} else {
-		sbus_writel(GLOB_CTRL_B16, qecp->gregs + GLOB_CTRL);
-	}
-
-	/* Packetsize only used in 100baseT BigMAC configurations,
-	 * set it to zero just to be on the safe side.
-	 */
-	sbus_writel(GLOB_PSIZE_2048, qecp->gregs + GLOB_PSIZE);
-
-	/* Set the local memsize register, divided up to one piece per QE channel. */
-	sbus_writel((resource_size(&op->resource[1]) >> 2),
-		    qecp->gregs + GLOB_MSIZE);
-
-	/* Divide up the local QEC memory amongst the 4 QE receiver and
-	 * transmitter FIFOs.  Basically it is (total / 2 / num_channels).
-	 */
-	sbus_writel((resource_size(&op->resource[1]) >> 2) >> 1,
-		    qecp->gregs + GLOB_TSIZE);
-	sbus_writel((resource_size(&op->resource[1]) >> 2) >> 1,
-		    qecp->gregs + GLOB_RSIZE);
-}
-
-static u8 __devinit qec_get_burst(struct device_node *dp)
-{
-	u8 bsizes, bsizes_more;
-
-	/* Find and set the burst sizes for the QEC, since it
-	 * does the actual dma for all 4 channels.
-	 */
-	bsizes = of_getintprop_default(dp, "burst-sizes", 0xff);
-	bsizes &= 0xff;
-	bsizes_more = of_getintprop_default(dp->parent, "burst-sizes", 0xff);
-
-	if (bsizes_more != 0xff)
-		bsizes &= bsizes_more;
-	if (bsizes == 0xff || (bsizes & DMA_BURST16) == 0 ||
-	    (bsizes & DMA_BURST32)==0)
-		bsizes = (DMA_BURST32 - 1);
-
-	return bsizes;
-}
-
-static struct sunqec * __devinit get_qec(struct platform_device *child)
-{
-	struct platform_device *op = to_platform_device(child->dev.parent);
-	struct sunqec *qecp;
-
-	qecp = dev_get_drvdata(&op->dev);
-	if (!qecp) {
-		qecp = kzalloc(sizeof(struct sunqec), GFP_KERNEL);
-		if (qecp) {
-			u32 ctrl;
-
-			qecp->op = op;
-			qecp->gregs = of_ioremap(&op->resource[0], 0,
-						 GLOB_REG_SIZE,
-						 "QEC Global Registers");
-			if (!qecp->gregs)
-				goto fail;
-
-			/* Make sure the QEC is in MACE mode. */
-			ctrl = sbus_readl(qecp->gregs + GLOB_CTRL);
-			ctrl &= 0xf0000000;
-			if (ctrl != GLOB_CTRL_MMODE) {
-				printk(KERN_ERR "qec: Not in MACE mode!\n");
-				goto fail;
-			}
-
-			if (qec_global_reset(qecp->gregs))
-				goto fail;
-
-			qecp->qec_bursts = qec_get_burst(op->dev.of_node);
-
-			qec_init_once(qecp, op);
-
-			if (request_irq(op->archdata.irqs[0], qec_interrupt,
-					IRQF_SHARED, "qec", (void *) qecp)) {
-				printk(KERN_ERR "qec: Can't register irq.\n");
-				goto fail;
-			}
-
-			dev_set_drvdata(&op->dev, qecp);
-
-			qecp->next_module = root_qec_dev;
-			root_qec_dev = qecp;
-		}
-	}
-
-	return qecp;
-
-fail:
-	if (qecp->gregs)
-		of_iounmap(&op->resource[0], qecp->gregs, GLOB_REG_SIZE);
-	kfree(qecp);
-	return NULL;
-}
-
-static const struct net_device_ops qec_ops = {
-	.ndo_open		= qe_open,
-	.ndo_stop		= qe_close,
-	.ndo_start_xmit		= qe_start_xmit,
-	.ndo_set_multicast_list	= qe_set_multicast,
-	.ndo_tx_timeout		= qe_tx_timeout,
-	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_set_mac_address	= eth_mac_addr,
-	.ndo_validate_addr	= eth_validate_addr,
-};
-
-static int __devinit qec_ether_init(struct platform_device *op)
-{
-	static unsigned version_printed;
-	struct net_device *dev;
-	struct sunqec *qecp;
-	struct sunqe *qe;
-	int i, res;
-
-	if (version_printed++ == 0)
-		printk(KERN_INFO "%s", version);
-
-	dev = alloc_etherdev(sizeof(struct sunqe));
-	if (!dev)
-		return -ENOMEM;
-
-	memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
-
-	qe = netdev_priv(dev);
-
-	res = -ENODEV;
-
-	i = of_getintprop_default(op->dev.of_node, "channel#", -1);
-	if (i == -1)
-		goto fail;
-	qe->channel = i;
-	spin_lock_init(&qe->lock);
-
-	qecp = get_qec(op);
-	if (!qecp)
-		goto fail;
-
-	qecp->qes[qe->channel] = qe;
-	qe->dev = dev;
-	qe->parent = qecp;
-	qe->op = op;
-
-	res = -ENOMEM;
-	qe->qcregs = of_ioremap(&op->resource[0], 0,
-				CREG_REG_SIZE, "QEC Channel Registers");
-	if (!qe->qcregs) {
-		printk(KERN_ERR "qe: Cannot map channel registers.\n");
-		goto fail;
-	}
-
-	qe->mregs = of_ioremap(&op->resource[1], 0,
-			       MREGS_REG_SIZE, "QE MACE Registers");
-	if (!qe->mregs) {
-		printk(KERN_ERR "qe: Cannot map MACE registers.\n");
-		goto fail;
-	}
-
-	qe->qe_block = dma_alloc_coherent(&op->dev, PAGE_SIZE,
-					  &qe->qblock_dvma, GFP_ATOMIC);
-	qe->buffers = dma_alloc_coherent(&op->dev, sizeof(struct sunqe_buffers),
-					 &qe->buffers_dvma, GFP_ATOMIC);
-	if (qe->qe_block == NULL || qe->qblock_dvma == 0 ||
-	    qe->buffers == NULL || qe->buffers_dvma == 0)
-		goto fail;
-
-	/* Stop this QE. */
-	qe_stop(qe);
-
-	SET_NETDEV_DEV(dev, &op->dev);
-
-	dev->watchdog_timeo = 5*HZ;
-	dev->irq = op->archdata.irqs[0];
-	dev->dma = 0;
-	dev->ethtool_ops = &qe_ethtool_ops;
-	dev->netdev_ops = &qec_ops;
-
-	res = register_netdev(dev);
-	if (res)
-		goto fail;
-
-	dev_set_drvdata(&op->dev, qe);
-
-	printk(KERN_INFO "%s: qe channel[%d] ", dev->name, qe->channel);
-	for (i = 0; i < 6; i++)
-		printk ("%2.2x%c",
-			dev->dev_addr[i],
-			i == 5 ? ' ': ':');
-	printk("\n");
-
-
-	return 0;
-
-fail:
-	if (qe->qcregs)
-		of_iounmap(&op->resource[0], qe->qcregs, CREG_REG_SIZE);
-	if (qe->mregs)
-		of_iounmap(&op->resource[1], qe->mregs, MREGS_REG_SIZE);
-	if (qe->qe_block)
-		dma_free_coherent(&op->dev, PAGE_SIZE,
-				  qe->qe_block, qe->qblock_dvma);
-	if (qe->buffers)
-		dma_free_coherent(&op->dev,
-				  sizeof(struct sunqe_buffers),
-				  qe->buffers,
-				  qe->buffers_dvma);
-
-	free_netdev(dev);
-
-	return res;
-}
-
-static int __devinit qec_sbus_probe(struct platform_device *op)
-{
-	return qec_ether_init(op);
-}
-
-static int __devexit qec_sbus_remove(struct platform_device *op)
-{
-	struct sunqe *qp = dev_get_drvdata(&op->dev);
-	struct net_device *net_dev = qp->dev;
-
-	unregister_netdev(net_dev);
-
-	of_iounmap(&op->resource[0], qp->qcregs, CREG_REG_SIZE);
-	of_iounmap(&op->resource[1], qp->mregs, MREGS_REG_SIZE);
-	dma_free_coherent(&op->dev, PAGE_SIZE,
-			  qp->qe_block, qp->qblock_dvma);
-	dma_free_coherent(&op->dev, sizeof(struct sunqe_buffers),
-			  qp->buffers, qp->buffers_dvma);
-
-	free_netdev(net_dev);
-
-	dev_set_drvdata(&op->dev, NULL);
-
-	return 0;
-}
-
-static const struct of_device_id qec_sbus_match[] = {
-	{
-		.name = "qe",
-	},
-	{},
-};
-
-MODULE_DEVICE_TABLE(of, qec_sbus_match);
-
-static struct platform_driver qec_sbus_driver = {
-	.driver = {
-		.name = "qec",
-		.owner = THIS_MODULE,
-		.of_match_table = qec_sbus_match,
-	},
-	.probe		= qec_sbus_probe,
-	.remove		= __devexit_p(qec_sbus_remove),
-};
-
-static int __init qec_init(void)
-{
-	return platform_driver_register(&qec_sbus_driver);
-}
-
-static void __exit qec_exit(void)
-{
-	platform_driver_unregister(&qec_sbus_driver);
-
-	while (root_qec_dev) {
-		struct sunqec *next = root_qec_dev->next_module;
-		struct platform_device *op = root_qec_dev->op;
-
-		free_irq(op->archdata.irqs[0], (void *) root_qec_dev);
-		of_iounmap(&op->resource[0], root_qec_dev->gregs,
-			   GLOB_REG_SIZE);
-		kfree(root_qec_dev);
-
-		root_qec_dev = next;
-	}
-}
-
-module_init(qec_init);
-module_exit(qec_exit);