net: remove smc911x driver

This driver was used on Arm and SH machines until 2009, when the
last platforms moved to the smsc911x driver for the same hardware.

Time to retire this version.

Link: https://lore.kernel.org/netdev/1232010482-3744-1-git-send-email-steve.glendinning@smsc.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20221017121900.3520108-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

4 files changed, 0 insertions, 3114 deletions

diff --git a/drivers/net/ethernet/smsc/Kconfig b/drivers/net/ethernet/smsc/Kconfig
index 2524c907f386..5f22a8a4d27b 100644
--- a/drivers/net/ethernet/smsc/Kconfig
+++ b/drivers/net/ethernet/smsc/Kconfig
@@ -75,20 +75,6 @@ config EPIC100
 	  More specific information and updates are available from
 	  <http://www.scyld.com/network/epic100.html>.
 
-config SMC911X
-	tristate "SMSC LAN911[5678] support"
-	select CRC32
-	select MII
-	depends on (ARM || SUPERH || COMPILE_TEST)
-	help
-	  This is a driver for SMSC's LAN911x series of Ethernet chipsets
-	  including the new LAN9115, LAN9116, LAN9117, and LAN9118.
-	  Say Y here if you want it compiled into the kernel.
-
-	  This driver is also available as a module. The module will be
-	  called smc911x.  If you want to compile it as a module, say M
-	  here and read <file:Documentation/kbuild/modules.rst>
-
 config SMSC911X
 	tristate "SMSC LAN911x/LAN921x families embedded ethernet support"
 	depends on HAS_IOMEM
diff --git a/drivers/net/ethernet/smsc/Makefile b/drivers/net/ethernet/smsc/Makefile
index 4105912b1629..1501fa364c13 100644
--- a/drivers/net/ethernet/smsc/Makefile
+++ b/drivers/net/ethernet/smsc/Makefile
@@ -8,5 +8,4 @@ obj-$(CONFIG_SMC91X) += smc91x.o
 obj-$(CONFIG_PCMCIA_SMC91C92) += smc91c92_cs.o
 obj-$(CONFIG_EPIC100) += epic100.o
 obj-$(CONFIG_SMSC9420) += smsc9420.o
-obj-$(CONFIG_SMC911X) += smc911x.o
 obj-$(CONFIG_SMSC911X) += smsc911x.o
diff --git a/drivers/net/ethernet/smsc/smc911x.c b/drivers/net/ethernet/smsc/smc911x.c
deleted file mode 100644
index 52ecfb461c41..000000000000
--- a/drivers/net/ethernet/smsc/smc911x.c
+++ /dev/null
@@ -1,2198 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * smc911x.c
- * This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices.
- *
- * Copyright (C) 2005 Sensoria Corp
- *	   Derived from the unified SMC91x driver by Nicolas Pitre
- *	   and the smsc911x.c reference driver by SMSC
- *
- * Arguments:
- *	 watchdog  = TX watchdog timeout
- *	 tx_fifo_kb = Size of TX FIFO in KB
- *
- * History:
- *	  04/16/05	Dustin McIntire		 Initial version
- */
-static const char version[] =
-	 "smc911x.c: v1.0 04-16-2005 by Dustin McIntire <dustin@sensoria.com>\n";
-
-/* Debugging options */
-#define ENABLE_SMC_DEBUG_RX		0
-#define ENABLE_SMC_DEBUG_TX		0
-#define ENABLE_SMC_DEBUG_DMA		0
-#define ENABLE_SMC_DEBUG_PKTS		0
-#define ENABLE_SMC_DEBUG_MISC		0
-#define ENABLE_SMC_DEBUG_FUNC		0
-
-#define SMC_DEBUG_RX		((ENABLE_SMC_DEBUG_RX	? 1 : 0) << 0)
-#define SMC_DEBUG_TX		((ENABLE_SMC_DEBUG_TX	? 1 : 0) << 1)
-#define SMC_DEBUG_DMA		((ENABLE_SMC_DEBUG_DMA	? 1 : 0) << 2)
-#define SMC_DEBUG_PKTS		((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3)
-#define SMC_DEBUG_MISC		((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4)
-#define SMC_DEBUG_FUNC		((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5)
-
-#ifndef SMC_DEBUG
-#define SMC_DEBUG	 ( SMC_DEBUG_RX	  | \
-			   SMC_DEBUG_TX	  | \
-			   SMC_DEBUG_DMA  | \
-			   SMC_DEBUG_PKTS | \
-			   SMC_DEBUG_MISC | \
-			   SMC_DEBUG_FUNC   \
-			 )
-#endif
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/crc32.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/workqueue.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-
-#include <linux/dmaengine.h>
-
-#include <asm/io.h>
-
-#include "smc911x.h"
-
-/*
- * Transmit timeout, default 5 seconds.
- */
-static int watchdog = 5000;
-module_param(watchdog, int, 0400);
-MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
-
-static int tx_fifo_kb=8;
-module_param(tx_fifo_kb, int, 0400);
-MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1<x<15)(default=8)");
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:smc911x");
-
-/*
- * The internal workings of the driver.  If you are changing anything
- * here with the SMC stuff, you should have the datasheet and know
- * what you are doing.
- */
-#define CARDNAME "smc911x"
-
-/*
- * Use power-down feature of the chip
- */
-#define POWER_DOWN		 1
-
-#if SMC_DEBUG > 0
-#define DBG(n, dev, args...)			 \
-	do {					 \
-		if (SMC_DEBUG & (n))		 \
-			netdev_dbg(dev, args);	 \
-	} while (0)
-
-#define PRINTK(dev, args...)   netdev_info(dev, args)
-#else
-#define DBG(n, dev, args...)			 \
-	while (0) {				 \
-		netdev_dbg(dev, args);		 \
-	}
-#define PRINTK(dev, args...)   netdev_dbg(dev, args)
-#endif
-
-#if SMC_DEBUG_PKTS > 0
-static void PRINT_PKT(u_char *buf, int length)
-{
-	int i;
-	int remainder;
-	int lines;
-
-	lines = length / 16;
-	remainder = length % 16;
-
-	for (i = 0; i < lines ; i ++) {
-		int cur;
-		printk(KERN_DEBUG);
-		for (cur = 0; cur < 8; cur++) {
-			u_char a, b;
-			a = *buf++;
-			b = *buf++;
-			pr_cont("%02x%02x ", a, b);
-		}
-		pr_cont("\n");
-	}
-	printk(KERN_DEBUG);
-	for (i = 0; i < remainder/2 ; i++) {
-		u_char a, b;
-		a = *buf++;
-		b = *buf++;
-		pr_cont("%02x%02x ", a, b);
-	}
-	pr_cont("\n");
-}
-#else
-static inline void PRINT_PKT(u_char *buf, int length) { }
-#endif
-
-
-/* this enables an interrupt in the interrupt mask register */
-#define SMC_ENABLE_INT(lp, x) do {			\
-	unsigned int  __mask;				\
-	__mask = SMC_GET_INT_EN((lp));			\
-	__mask |= (x);					\
-	SMC_SET_INT_EN((lp), __mask);			\
-} while (0)
-
-/* this disables an interrupt from the interrupt mask register */
-#define SMC_DISABLE_INT(lp, x) do {			\
-	unsigned int  __mask;				\
-	__mask = SMC_GET_INT_EN((lp));			\
-	__mask &= ~(x);					\
-	SMC_SET_INT_EN((lp), __mask);			\
-} while (0)
-
-/*
- * this does a soft reset on the device
- */
-static void smc911x_reset(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int reg, timeout=0, resets=1, irq_cfg;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	/*	 Take out of PM setting first */
-	if ((SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_) == 0) {
-		/* Write to the bytetest will take out of powerdown */
-		SMC_SET_BYTE_TEST(lp, 0);
-		timeout=10;
-		do {
-			udelay(10);
-			reg = SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_;
-		} while (--timeout && !reg);
-		if (timeout == 0) {
-			PRINTK(dev, "smc911x_reset timeout waiting for PM restore\n");
-			return;
-		}
-	}
-
-	/* Disable all interrupts */
-	spin_lock_irqsave(&lp->lock, flags);
-	SMC_SET_INT_EN(lp, 0);
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	while (resets--) {
-		SMC_SET_HW_CFG(lp, HW_CFG_SRST_);
-		timeout=10;
-		do {
-			udelay(10);
-			reg = SMC_GET_HW_CFG(lp);
-			/* If chip indicates reset timeout then try again */
-			if (reg & HW_CFG_SRST_TO_) {
-				PRINTK(dev, "chip reset timeout, retrying...\n");
-				resets++;
-				break;
-			}
-		} while (--timeout && (reg & HW_CFG_SRST_));
-	}
-	if (timeout == 0) {
-		PRINTK(dev, "smc911x_reset timeout waiting for reset\n");
-		return;
-	}
-
-	/* make sure EEPROM has finished loading before setting GPIO_CFG */
-	timeout=1000;
-	while (--timeout && (SMC_GET_E2P_CMD(lp) & E2P_CMD_EPC_BUSY_))
-		udelay(10);
-
-	if (timeout == 0){
-		PRINTK(dev, "smc911x_reset timeout waiting for EEPROM busy\n");
-		return;
-	}
-
-	/* Initialize interrupts */
-	SMC_SET_INT_EN(lp, 0);
-	SMC_ACK_INT(lp, -1);
-
-	/* Reset the FIFO level and flow control settings */
-	SMC_SET_HW_CFG(lp, (lp->tx_fifo_kb & 0xF) << 16);
-//TODO: Figure out what appropriate pause time is
-	SMC_SET_FLOW(lp, FLOW_FCPT_ | FLOW_FCEN_);
-	SMC_SET_AFC_CFG(lp, lp->afc_cfg);
-
-
-	/* Set to LED outputs */
-	SMC_SET_GPIO_CFG(lp, 0x70070000);
-
-	/*
-	 * Deassert IRQ for 1*10us for edge type interrupts
-	 * and drive IRQ pin push-pull
-	 */
-	irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
-#ifdef SMC_DYNAMIC_BUS_CONFIG
-	if (lp->cfg.irq_polarity)
-		irq_cfg |= INT_CFG_IRQ_POL_;
-#endif
-	SMC_SET_IRQ_CFG(lp, irq_cfg);
-
-	/* clear anything saved */
-	if (lp->pending_tx_skb != NULL) {
-		dev_kfree_skb (lp->pending_tx_skb);
-		lp->pending_tx_skb = NULL;
-		dev->stats.tx_errors++;
-		dev->stats.tx_aborted_errors++;
-	}
-}
-
-/*
- * Enable Interrupts, Receive, and Transmit
- */
-static void smc911x_enable(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned mask, cfg, cr;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	spin_lock_irqsave(&lp->lock, flags);
-
-	SMC_SET_MAC_ADDR(lp, dev->dev_addr);
-
-	/* Enable TX */
-	cfg = SMC_GET_HW_CFG(lp);
-	cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF;
-	cfg |= HW_CFG_SF_;
-	SMC_SET_HW_CFG(lp, cfg);
-	SMC_SET_FIFO_TDA(lp, 0xFF);
-	/* Update TX stats on every 64 packets received or every 1 sec */
-	SMC_SET_FIFO_TSL(lp, 64);
-	SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
-
-	SMC_GET_MAC_CR(lp, cr);
-	cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_;
-	SMC_SET_MAC_CR(lp, cr);
-	SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_);
-
-	/* Add 2 byte padding to start of packets */
-	SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_);
-
-	/* Turn on receiver and enable RX */
-	if (cr & MAC_CR_RXEN_)
-		DBG(SMC_DEBUG_RX, dev, "Receiver already enabled\n");
-
-	SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_);
-
-	/* Interrupt on every received packet */
-	SMC_SET_FIFO_RSA(lp, 0x01);
-	SMC_SET_FIFO_RSL(lp, 0x00);
-
-	/* now, enable interrupts */
-	mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ |
-		INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ |
-		INT_EN_PHY_INT_EN_;
-	if (IS_REV_A(lp->revision))
-		mask|=INT_EN_RDFL_EN_;
-	else {
-		mask|=INT_EN_RDFO_EN_;
-	}
-	SMC_ENABLE_INT(lp, mask);
-
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-/*
- * this puts the device in an inactive state
- */
-static void smc911x_shutdown(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned cr;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC, dev, "%s: --> %s\n", CARDNAME, __func__);
-
-	/* Disable IRQ's */
-	SMC_SET_INT_EN(lp, 0);
-
-	/* Turn of Rx and TX */
-	spin_lock_irqsave(&lp->lock, flags);
-	SMC_GET_MAC_CR(lp, cr);
-	cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
-	SMC_SET_MAC_CR(lp, cr);
-	SMC_SET_TX_CFG(lp, TX_CFG_STOP_TX_);
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-static inline void smc911x_drop_pkt(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int fifo_count, timeout, reg;
-
-	DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "%s: --> %s\n",
-	    CARDNAME, __func__);
-	fifo_count = SMC_GET_RX_FIFO_INF(lp) & 0xFFFF;
-	if (fifo_count <= 4) {
-		/* Manually dump the packet data */
-		while (fifo_count--)
-			SMC_GET_RX_FIFO(lp);
-	} else	 {
-		/* Fast forward through the bad packet */
-		SMC_SET_RX_DP_CTRL(lp, RX_DP_CTRL_FFWD_BUSY_);
-		timeout=50;
-		do {
-			udelay(10);
-			reg = SMC_GET_RX_DP_CTRL(lp) & RX_DP_CTRL_FFWD_BUSY_;
-		} while (--timeout && reg);
-		if (timeout == 0) {
-			PRINTK(dev, "timeout waiting for RX fast forward\n");
-		}
-	}
-}
-
-/*
- * This is the procedure to handle the receipt of a packet.
- * It should be called after checking for packet presence in
- * the RX status FIFO.	 It must be called with the spin lock
- * already held.
- */
-static inline void	 smc911x_rcv(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int pkt_len, status;
-	struct sk_buff *skb;
-	unsigned char *data;
-
-	DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "--> %s\n",
-	    __func__);
-	status = SMC_GET_RX_STS_FIFO(lp);
-	DBG(SMC_DEBUG_RX, dev, "Rx pkt len %d status 0x%08x\n",
-	    (status & 0x3fff0000) >> 16, status & 0xc000ffff);
-	pkt_len = (status & RX_STS_PKT_LEN_) >> 16;
-	if (status & RX_STS_ES_) {
-		/* Deal with a bad packet */
-		dev->stats.rx_errors++;
-		if (status & RX_STS_CRC_ERR_)
-			dev->stats.rx_crc_errors++;
-		else {
-			if (status & RX_STS_LEN_ERR_)
-				dev->stats.rx_length_errors++;
-			if (status & RX_STS_MCAST_)
-				dev->stats.multicast++;
-		}
-		/* Remove the bad packet data from the RX FIFO */
-		smc911x_drop_pkt(dev);
-	} else {
-		/* Receive a valid packet */
-		/* Alloc a buffer with extra room for DMA alignment */
-		skb = netdev_alloc_skb(dev, pkt_len+32);
-		if (unlikely(skb == NULL)) {
-			PRINTK(dev, "Low memory, rcvd packet dropped.\n");
-			dev->stats.rx_dropped++;
-			smc911x_drop_pkt(dev);
-			return;
-		}
-		/* Align IP header to 32 bits
-		 * Note that the device is configured to add a 2
-		 * byte padding to the packet start, so we really
-		 * want to write to the orignal data pointer */
-		data = skb->data;
-		skb_reserve(skb, 2);
-		skb_put(skb,pkt_len-4);
-#ifdef SMC_USE_DMA
-		{
-		unsigned int fifo;
-		/* Lower the FIFO threshold if possible */
-		fifo = SMC_GET_FIFO_INT(lp);
-		if (fifo & 0xFF) fifo--;
-		DBG(SMC_DEBUG_RX, dev, "Setting RX stat FIFO threshold to %d\n",
-		    fifo & 0xff);
-		SMC_SET_FIFO_INT(lp, fifo);
-		/* Setup RX DMA */
-		SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_));
-		lp->rxdma_active = 1;
-		lp->current_rx_skb = skb;
-		SMC_PULL_DATA(lp, data, (pkt_len+2+15) & ~15);
-		/* Packet processing deferred to DMA RX interrupt */
-		}
-#else
-		SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_));
-		SMC_PULL_DATA(lp, data, pkt_len+2+3);
-
-		DBG(SMC_DEBUG_PKTS, dev, "Received packet\n");
-		PRINT_PKT(data, min(pkt_len - 4, 64U));
-		skb->protocol = eth_type_trans(skb, dev);
-		netif_rx(skb);
-		dev->stats.rx_packets++;
-		dev->stats.rx_bytes += pkt_len-4;
-#endif
-	}
-}
-
-/*
- * This is called to actually send a packet to the chip.
- */
-static void smc911x_hardware_send_pkt(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	struct sk_buff *skb;
-	unsigned int cmdA, cmdB, len;
-	unsigned char *buf;
-
-	DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__);
-	BUG_ON(lp->pending_tx_skb == NULL);
-
-	skb = lp->pending_tx_skb;
-	lp->pending_tx_skb = NULL;
-
-	/* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */
-	/* cmdB {31:16] pkt tag [10:0] length */
-#ifdef SMC_USE_DMA
-	/* 16 byte buffer alignment mode */
-	buf = (char*)((u32)(skb->data) & ~0xF);
-	len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF;
-	cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) |
-			TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
-			skb->len;
-#else
-	buf = (char *)((uintptr_t)skb->data & ~0x3);
-	len = (skb->len + 3 + ((uintptr_t)skb->data & 3)) & ~0x3;
-	cmdA = (((uintptr_t)skb->data & 0x3) << 16) |
-			TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
-			skb->len;
-#endif
-	/* tag is packet length so we can use this in stats update later */
-	cmdB = (skb->len  << 16) | (skb->len & 0x7FF);
-
-	DBG(SMC_DEBUG_TX, dev, "TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n",
-	    len, len, buf, cmdA, cmdB);
-	SMC_SET_TX_FIFO(lp, cmdA);
-	SMC_SET_TX_FIFO(lp, cmdB);
-
-	DBG(SMC_DEBUG_PKTS, dev, "Transmitted packet\n");
-	PRINT_PKT(buf, min(len, 64U));
-
-	/* Send pkt via PIO or DMA */
-#ifdef SMC_USE_DMA
-	lp->current_tx_skb = skb;
-	SMC_PUSH_DATA(lp, buf, len);
-	/* DMA complete IRQ will free buffer and set jiffies */
-#else
-	SMC_PUSH_DATA(lp, buf, len);
-	netif_trans_update(dev);
-	dev_kfree_skb_irq(skb);
-#endif
-	if (!lp->tx_throttle) {
-		netif_wake_queue(dev);
-	}
-	SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_);
-}
-
-/*
- * Since I am not sure if I will have enough room in the chip's ram
- * to store the packet, I call this routine which either sends it
- * now, or set the card to generates an interrupt when ready
- * for the packet.
- */
-static netdev_tx_t
-smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int free;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
-	    __func__);
-
-	spin_lock_irqsave(&lp->lock, flags);
-
-	BUG_ON(lp->pending_tx_skb != NULL);
-
-	free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_;
-	DBG(SMC_DEBUG_TX, dev, "TX free space %d\n", free);
-
-	/* Turn off the flow when running out of space in FIFO */
-	if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) {
-		DBG(SMC_DEBUG_TX, dev, "Disabling data flow due to low FIFO space (%d)\n",
-		    free);
-		/* Reenable when at least 1 packet of size MTU present */
-		SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64);
-		lp->tx_throttle = 1;
-		netif_stop_queue(dev);
-	}
-
-	/* Drop packets when we run out of space in TX FIFO
-	 * Account for overhead required for:
-	 *
-	 *	  Tx command words			 8 bytes
-	 *	  Start offset				 15 bytes
-	 *	  End padding				 15 bytes
-	 */
-	if (unlikely(free < (skb->len + 8 + 15 + 15))) {
-		netdev_warn(dev, "No Tx free space %d < %d\n",
-			    free, skb->len);
-		lp->pending_tx_skb = NULL;
-		dev->stats.tx_errors++;
-		dev->stats.tx_dropped++;
-		spin_unlock_irqrestore(&lp->lock, flags);
-		dev_kfree_skb_any(skb);
-		return NETDEV_TX_OK;
-	}
-
-#ifdef SMC_USE_DMA
-	{
-		/* If the DMA is already running then defer this packet Tx until
-		 * the DMA IRQ starts it
-		 */
-		if (lp->txdma_active) {
-			DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Tx DMA running, deferring packet\n");
-			lp->pending_tx_skb = skb;
-			netif_stop_queue(dev);
-			spin_unlock_irqrestore(&lp->lock, flags);
-			return NETDEV_TX_OK;
-		} else {
-			DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Activating Tx DMA\n");
-			lp->txdma_active = 1;
-		}
-	}
-#endif
-	lp->pending_tx_skb = skb;
-	smc911x_hardware_send_pkt(dev);
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	return NETDEV_TX_OK;
-}
-
-/*
- * This handles a TX status interrupt, which is only called when:
- * - a TX error occurred, or
- * - TX of a packet completed.
- */
-static void smc911x_tx(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int tx_status;
-
-	DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
-	    __func__);
-
-	/* Collect the TX status */
-	while (((SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16) != 0) {
-		DBG(SMC_DEBUG_TX, dev, "Tx stat FIFO used 0x%04x\n",
-		    (SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16);
-		tx_status = SMC_GET_TX_STS_FIFO(lp);
-		dev->stats.tx_packets++;
-		dev->stats.tx_bytes+=tx_status>>16;
-		DBG(SMC_DEBUG_TX, dev, "Tx FIFO tag 0x%04x status 0x%04x\n",
-		    (tx_status & 0xffff0000) >> 16,
-		    tx_status & 0x0000ffff);
-		/* count Tx errors, but ignore lost carrier errors when in
-		 * full-duplex mode */
-		if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx &&
-		    !(tx_status & 0x00000306))) {
-			dev->stats.tx_errors++;
-		}
-		if (tx_status & TX_STS_MANY_COLL_) {
-			dev->stats.collisions+=16;
-			dev->stats.tx_aborted_errors++;
-		} else {
-			dev->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3;
-		}
-		/* carrier error only has meaning for half-duplex communication */
-		if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) &&
-		    !lp->ctl_rfduplx) {
-			dev->stats.tx_carrier_errors++;
-		}
-		if (tx_status & TX_STS_LATE_COLL_) {
-			dev->stats.collisions++;
-			dev->stats.tx_aborted_errors++;
-		}
-	}
-}
-
-
-/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
-/*
- * Reads a register from the MII Management serial interface
- */
-
-static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int phydata;
-
-	SMC_GET_MII(lp, phyreg, phyaddr, phydata);
-
-	DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n",
-	    __func__, phyaddr, phyreg, phydata);
-	return phydata;
-}
-
-
-/*
- * Writes a register to the MII Management serial interface
- */
-static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg,
-			int phydata)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-
-	DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
-	    __func__, phyaddr, phyreg, phydata);
-
-	SMC_SET_MII(lp, phyreg, phyaddr, phydata);
-}
-
-/*
- * Finds and reports the PHY address (115 and 117 have external
- * PHY interface 118 has internal only
- */
-static void smc911x_phy_detect(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	int phyaddr;
-	unsigned int cfg, id1, id2;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	lp->phy_type = 0;
-
-	/*
-	 * Scan all 32 PHY addresses if necessary, starting at
-	 * PHY#1 to PHY#31, and then PHY#0 last.
-	 */
-	switch(lp->version) {
-		case CHIP_9115:
-		case CHIP_9117:
-		case CHIP_9215:
-		case CHIP_9217:
-			cfg = SMC_GET_HW_CFG(lp);
-			if (cfg & HW_CFG_EXT_PHY_DET_) {
-				cfg &= ~HW_CFG_PHY_CLK_SEL_;
-				cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
-				SMC_SET_HW_CFG(lp, cfg);
-				udelay(10); /* Wait for clocks to stop */
-
-				cfg |= HW_CFG_EXT_PHY_EN_;
-				SMC_SET_HW_CFG(lp, cfg);
-				udelay(10); /* Wait for clocks to stop */
-
-				cfg &= ~HW_CFG_PHY_CLK_SEL_;
-				cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
-				SMC_SET_HW_CFG(lp, cfg);
-				udelay(10); /* Wait for clocks to stop */
-
-				cfg |= HW_CFG_SMI_SEL_;
-				SMC_SET_HW_CFG(lp, cfg);
-
-				for (phyaddr = 1; phyaddr < 32; ++phyaddr) {
-
-					/* Read the PHY identifiers */
-					SMC_GET_PHY_ID1(lp, phyaddr & 31, id1);
-					SMC_GET_PHY_ID2(lp, phyaddr & 31, id2);
-
-					/* Make sure it is a valid identifier */
-					if (id1 != 0x0000 && id1 != 0xffff &&
-					    id1 != 0x8000 && id2 != 0x0000 &&
-					    id2 != 0xffff && id2 != 0x8000) {
-						/* Save the PHY's address */
-						lp->mii.phy_id = phyaddr & 31;
-						lp->phy_type = id1 << 16 | id2;
-						break;
-					}
-				}
-				if (phyaddr < 32)
-					/* Found an external PHY */
-					break;
-			}
-			fallthrough;
-		default:
-			/* Internal media only */
-			SMC_GET_PHY_ID1(lp, 1, id1);
-			SMC_GET_PHY_ID2(lp, 1, id2);
-			/* Save the PHY's address */
-			lp->mii.phy_id = 1;
-			lp->phy_type = id1 << 16 | id2;
-	}
-
-	DBG(SMC_DEBUG_MISC, dev, "phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%x\n",
-	    id1, id2, lp->mii.phy_id);
-}
-
-/*
- * Sets the PHY to a configuration as determined by the user.
- * Called with spin_lock held.
- */
-static int smc911x_phy_fixed(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	int phyaddr = lp->mii.phy_id;
-	int bmcr;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	/* Enter Link Disable state */
-	SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
-	bmcr |= BMCR_PDOWN;
-	SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
-
-	/*
-	 * Set our fixed capabilities
-	 * Disable auto-negotiation
-	 */
-	bmcr &= ~BMCR_ANENABLE;
-	if (lp->ctl_rfduplx)
-		bmcr |= BMCR_FULLDPLX;
-
-	if (lp->ctl_rspeed == 100)
-		bmcr |= BMCR_SPEED100;
-
-	/* Write our capabilities to the phy control register */
-	SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
-
-	/* Re-Configure the Receive/Phy Control register */
-	bmcr &= ~BMCR_PDOWN;
-	SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
-
-	return 1;
-}
-
-/**
- * smc911x_phy_reset - reset the phy
- * @dev: net device
- * @phy: phy address
- *
- * Issue a software reset for the specified PHY and
- * wait up to 100ms for the reset to complete.	 We should
- * not access the PHY for 50ms after issuing the reset.
- *
- * The time to wait appears to be dependent on the PHY.
- *
- */
-static int smc911x_phy_reset(struct net_device *dev, int phy)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	int timeout;
-	unsigned long flags;
-	unsigned int reg;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
-
-	spin_lock_irqsave(&lp->lock, flags);
-	reg = SMC_GET_PMT_CTRL(lp);
-	reg &= ~0xfffff030;
-	reg |= PMT_CTRL_PHY_RST_;
-	SMC_SET_PMT_CTRL(lp, reg);
-	spin_unlock_irqrestore(&lp->lock, flags);
-	for (timeout = 2; timeout; timeout--) {
-		msleep(50);
-		spin_lock_irqsave(&lp->lock, flags);
-		reg = SMC_GET_PMT_CTRL(lp);
-		spin_unlock_irqrestore(&lp->lock, flags);
-		if (!(reg & PMT_CTRL_PHY_RST_)) {
-			/* extra delay required because the phy may
-			 * not be completed with its reset
-			 * when PHY_BCR_RESET_ is cleared. 256us
-			 * should suffice, but use 500us to be safe
-			 */
-			udelay(500);
-		break;
-		}
-	}
-
-	return reg & PMT_CTRL_PHY_RST_;
-}
-
-/**
- * smc911x_phy_powerdown - powerdown phy
- * @dev: net device
- * @phy: phy address
- *
- * Power down the specified PHY
- */
-static void smc911x_phy_powerdown(struct net_device *dev, int phy)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int bmcr;
-
-	/* Enter Link Disable state */
-	SMC_GET_PHY_BMCR(lp, phy, bmcr);
-	bmcr |= BMCR_PDOWN;
-	SMC_SET_PHY_BMCR(lp, phy, bmcr);
-}
-
-/**
- * smc911x_phy_check_media - check the media status and adjust BMCR
- * @dev: net device
- * @init: set true for initialisation
- *
- * Select duplex mode depending on negotiation state.	This
- * also updates our carrier state.
- */
-static void smc911x_phy_check_media(struct net_device *dev, int init)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	int phyaddr = lp->mii.phy_id;
-	unsigned int bmcr, cr;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
-		/* duplex state has changed */
-		SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
-		SMC_GET_MAC_CR(lp, cr);
-		if (lp->mii.full_duplex) {
-			DBG(SMC_DEBUG_MISC, dev, "Configuring for full-duplex mode\n");
-			bmcr |= BMCR_FULLDPLX;
-			cr |= MAC_CR_RCVOWN_;
-		} else {
-			DBG(SMC_DEBUG_MISC, dev, "Configuring for half-duplex mode\n");
-			bmcr &= ~BMCR_FULLDPLX;
-			cr &= ~MAC_CR_RCVOWN_;
-		}
-		SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
-		SMC_SET_MAC_CR(lp, cr);
-	}
-}
-
-/*
- * Configures the specified PHY through the MII management interface
- * using Autonegotiation.
- * Calls smc911x_phy_fixed() if the user has requested a certain config.
- * If RPC ANEG bit is set, the media selection is dependent purely on
- * the selection by the MII (either in the MII BMCR reg or the result
- * of autonegotiation.)  If the RPC ANEG bit is cleared, the selection
- * is controlled by the RPC SPEED and RPC DPLX bits.
- */
-static void smc911x_phy_configure(struct work_struct *work)
-{
-	struct smc911x_local *lp = container_of(work, struct smc911x_local,
-						phy_configure);
-	struct net_device *dev = lp->netdev;
-	int phyaddr = lp->mii.phy_id;
-	int my_phy_caps; /* My PHY capabilities */
-	int my_ad_caps; /* My Advertised capabilities */
-	int status __always_unused;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
-
-	/*
-	 * We should not be called if phy_type is zero.
-	 */
-	if (lp->phy_type == 0)
-		return;
-
-	if (smc911x_phy_reset(dev, phyaddr)) {
-		netdev_info(dev, "PHY reset timed out\n");
-		return;
-	}
-	spin_lock_irqsave(&lp->lock, flags);
-
-	/*
-	 * Enable PHY Interrupts (for register 18)
-	 * Interrupts listed here are enabled
-	 */
-	SMC_SET_PHY_INT_MASK(lp, phyaddr, PHY_INT_MASK_ENERGY_ON_ |
-		 PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ |
-		 PHY_INT_MASK_LINK_DOWN_);
-
-	/* If the user requested no auto neg, then go set his request */
-	if (lp->mii.force_media) {
-		smc911x_phy_fixed(dev);
-		goto smc911x_phy_configure_exit;
-	}
-
-	/* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
-	SMC_GET_PHY_BMSR(lp, phyaddr, my_phy_caps);
-	if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
-		netdev_info(dev, "Auto negotiation NOT supported\n");
-		smc911x_phy_fixed(dev);
-		goto smc911x_phy_configure_exit;
-	}
-
-	/* CSMA capable w/ both pauses */
-	my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
-
-	if (my_phy_caps & BMSR_100BASE4)
-		my_ad_caps |= ADVERTISE_100BASE4;
-	if (my_phy_caps & BMSR_100FULL)
-		my_ad_caps |= ADVERTISE_100FULL;
-	if (my_phy_caps & BMSR_100HALF)
-		my_ad_caps |= ADVERTISE_100HALF;
-	if (my_phy_caps & BMSR_10FULL)
-		my_ad_caps |= ADVERTISE_10FULL;
-	if (my_phy_caps & BMSR_10HALF)
-		my_ad_caps |= ADVERTISE_10HALF;
-
-	/* Disable capabilities not selected by our user */
-	if (lp->ctl_rspeed != 100)
-		my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
-
-	if (!lp->ctl_rfduplx)
-		my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
-
-	/* Update our Auto-Neg Advertisement Register */
-	SMC_SET_PHY_MII_ADV(lp, phyaddr, my_ad_caps);
-	lp->mii.advertising = my_ad_caps;
-
-	/*
-	 * Read the register back.	 Without this, it appears that when
-	 * auto-negotiation is restarted, sometimes it isn't ready and
-	 * the link does not come up.
-	 */
-	udelay(10);
-	SMC_GET_PHY_MII_ADV(lp, phyaddr, status);
-
-	DBG(SMC_DEBUG_MISC, dev, "phy caps=0x%04x\n", my_phy_caps);
-	DBG(SMC_DEBUG_MISC, dev, "phy advertised caps=0x%04x\n", my_ad_caps);
-
-	/* Restart auto-negotiation process in order to advertise my caps */
-	SMC_SET_PHY_BMCR(lp, phyaddr, BMCR_ANENABLE | BMCR_ANRESTART);
-
-	smc911x_phy_check_media(dev, 1);
-
-smc911x_phy_configure_exit:
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-/*
- * smc911x_phy_interrupt
- *
- * Purpose:  Handle interrupts relating to PHY register 18. This is
- *	 called from the "hard" interrupt handler under our private spinlock.
- */
-static void smc911x_phy_interrupt(struct net_device *dev)
-{
-	struct smc911x_local *lp = netdev_priv(dev);
-	int phyaddr = lp->mii.phy_id;
-	int status __always_unused;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	if (lp->phy_type == 0)
-		return;
-
-	smc911x_phy_check_media(dev, 0);
-	/* read to clear status bits */
-	SMC_GET_PHY_INT_SRC(lp, phyaddr,status);
-	DBG(SMC_DEBUG_MISC, dev, "PHY interrupt status 0x%04x\n",
-	    status & 0xffff);
-	DBG(SMC_DEBUG_MISC, dev, "AFC_CFG 0x%08x\n",
-	    SMC_GET_AFC_CFG(lp));
-}
-
-/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
-
-/*
- * This is the main routine of the driver, to handle the device when
- * it needs some attention.
- */
-static irqreturn_t smc911x_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct smc911x_local *lp = netdev_priv(dev);
-	unsigned int status, mask, timeout;
-	unsigned int rx_overrun=0, cr, pkts;
-	unsigned long flags;
-
-	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-
-	spin_lock_irqsave(&lp->lock, flags);
-
-	/* Spurious interrupt check */
-	if ((SMC_GET_IRQ_CFG(lp) & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) !=
-		(INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) {
-		spin_unlock_irqrestore(&lp->lock, flags);
-		return IRQ_NONE;
-	}
-
-	mask = SMC_GET_INT_EN(lp);
-	SMC_SET_INT_EN(lp, 0);
-
-	/* set a timeout value, so I don't stay here forever */
-	timeout = 8;
-
-
-	do {
-		status = SMC_GET_INT(lp);
-