Merge with Linux 2.1.67.

1 files changed, 835 insertions, 0 deletions

diff --git a/drivers/net/ni5010.c b/drivers/net/ni5010.c
new file mode 100644
index 000000000..9a853e9c9
--- /dev/null
+++ b/drivers/net/ni5010.c
@@ -0,0 +1,835 @@
+/*	ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard.
+ *
+ *	Copyright 1996,1997 Jan-Pascal van Best and Andreas Mohr.
+ *
+ *	This software may be used and distributed according to the terms
+ *	of the GNU Public License, incorporated herein by reference.
+ *
+ * 	The authors may be reached as:
+ *		jvbest@wi.leidenuniv.nl		a.mohr@mailto.de
+ * 	or by snail mail as
+ * 		Jan-Pascal van Best		Andreas Mohr
+ *		Klikspaanweg 58-4		Stauferstr. 6
+ *		2324 LZ  Leiden			D-71272 Renningen
+ *		The Netherlands			Germany
+ *
+ *	Sources:
+ * 	 	Donald Becker's "skeleton.c"
+ *  		Crynwr ni5010 packet driver
+ *
+ *	Changes:
+ *		v0.0: First test version
+ *		v0.1: First working version
+ *		v0.2:
+ *		v0.3->v0.90: Now demand setting io and irq when loading as module
+ *	970430	v0.91: modified for Linux 2.1.14
+ *		v0.92: Implemented Andreas' (better) NI5010 probe
+ *	970503	v0.93: Fixed auto-irq failure on warm reboot (JB)
+ *	970623	v1.00: First kernel version (AM)
+ *	970814	v1.01: Added detection of onboard receive buffer size (AM)
+ *	Bugs:
+ *		- None known...
+ *		- Note that you have to patch ifconfig for the new /proc/net/dev
+ *		format. It gives incorrect stats otherwise.
+ *
+ *	To do:
+ *		Fix all bugs :-)
+ *		Move some stuff to chipset_init()
+ *		Handle xmt errors other than collisions
+ *		Complete merge with Andreas' driver
+ *		Implement ring buffers (Is this useful? You can't squeeze
+ *			too many packet in a 2k buffer!)
+ *		Implement DMA (Again, is this useful? Some docs says DMA is
+ *			slower than programmed I/O)
+ *
+ *	Compile with:
+ *		gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \
+ *			-DMODULE -c ni5010.c 
+ *
+ *	Insert with e.g.:
+ *		insmod ni5010.o io=0x300 irq=5 	
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/malloc.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include "ni5010.h"
+
+static const char *boardname = "NI5010";
+static char *version =
+	"ni5010.c: v1.00 06/23/97 Jan-Pascal van Best and Andreas Mohr\n";
+	
+/* bufsize_rcv == 0 means autoprobing */
+unsigned int bufsize_rcv = 0;
+
+#define jumpered_interrupts	/* IRQ line jumpered on board */
+#undef jumpered_dma		/* No DMA used */
+#undef FULL_IODETECT		/* Only detect in portlist */
+
+#ifndef FULL_IODETECT
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int ni5010_portlist[] __initdata =
+	{ 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 };
+#endif
+
+/* Use 0 for production, 1 for verification, >2 for debug */
+#ifndef NI5010_DEBUG
+#define NI5010_DEBUG 0
+#endif
+
+/* Information that needs to be kept for each board. */
+struct ni5010_local {
+	struct net_device_stats stats;
+	int o_pkt_size;
+	int i_pkt_size;
+};
+
+/* Index to functions, as function prototypes. */
+
+extern int 	ni5010_probe(struct device *dev);
+static int	ni5010_probe1(struct device *dev, int ioaddr);
+static int	ni5010_open(struct device *dev);
+static int	ni5010_send_packet(struct sk_buff *skb, struct device *dev);
+static void	ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void	ni5010_rx(struct device *dev);
+static int	ni5010_close(struct device *dev);
+static struct net_device_stats *ni5010_get_stats(struct device *dev);
+static void 	ni5010_set_multicast_list(struct device *dev);
+static void	reset_receiver(struct device *dev);
+
+static int	process_xmt_interrupt(struct device *dev);
+#define tx_done(dev) 1
+extern void	hardware_send_packet(struct device *dev, char *buf, int length);
+extern void 	chipset_init(struct device *dev, int startp);
+static void	dump_packet(void *buf, int len);
+static void 	show_registers(struct device *dev);
+
+
+__initfunc(int ni5010_probe(struct device *dev))
+{
+	int *port;
+
+	int base_addr = dev ? dev->base_addr : 0;
+
+        PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
+        
+	if (base_addr > 0x1ff)		/* Check a single specified location. */
+		return ni5010_probe1(dev, base_addr);
+	else if (base_addr != 0)	/* Don't probe at all. */
+		return -ENXIO;
+
+#ifdef FULL_IODETECT
+		for (int ioaddr=0x200; ioaddr<0x400; ioaddr+=0x20) {
+			if (check_region(ioaddr, NI5010_IO_EXTENT))
+				continue;
+			if (ni5010_probe1(dev, ioaddr) == 0)
+				return 0;
+		}
+#else
+		for (port = ni5010_portlist; *port; port++) {
+			int ioaddr = *port;
+			if (check_region(ioaddr, NI5010_IO_EXTENT))
+				continue;
+			if (ni5010_probe1(dev, ioaddr) == 0)
+				return 0;
+		}
+#endif	/* FULL_IODETECT */
+	return -ENODEV;
+}
+
+static inline int rd_port(int ioaddr)
+{
+	inb(IE_RBUF);
+	return inb(IE_SAPROM);
+}
+
+__initfunc(void trigger_irq(int ioaddr))
+{
+		outb(0x00, EDLC_RESET);	/* Clear EDLC hold RESET state */
+		outb(0x00, IE_RESET);	/* Board reset */
+		outb(0x00, EDLC_XMASK);	/* Disable all Xmt interrupts */
+		outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */
+		outb(0xff, EDLC_XCLR);	/* Clear all pending Xmt interrupts */
+		outb(0xff, EDLC_RCLR);	/* Clear all pending Rcv interrupts */
+		/*
+		 * Transmit packet mode: Ignore parity, Power xcvr,
+		 * 	Enable loopback
+		 */
+		outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
+		outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */
+		outb(XM_ALL, EDLC_XMASK);	/* Enable all Xmt interrupts */
+		udelay(50);			/* FIXME: Necessary? */
+		outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */
+}
+
+/*
+ *      This is the real probe routine.  Linux has a history of friendly device
+ *      probes on the ISA bus.  A good device probes avoids doing writes, and
+ *      verifies that the correct device exists and functions.
+ */
+
+__initfunc(static int ni5010_probe1(struct device *dev, int ioaddr))
+{
+	static unsigned version_printed = 0;
+	int i;
+	unsigned int data;
+	int boguscount = 40;
+
+	/*
+	 * This is no "official" probe method, I've rather tested which
+	 * probe works best with my seven NI5010 cards
+	 * (they have very different serial numbers)
+	 * Suggestions or failure reports are very, very welcome !
+	 * But I think it is a relatively good probe method
+	 * since it doesn't use any "outb"
+	 * It should be nearly 100% reliable !
+	 * well-known WARNING: this probe method (like many others)
+	 * will hang the system if a NE2000 card region is probed !
+	 *
+	 *   - Andreas
+	 */
+	
+ 	PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", 
+ 		dev->name, ioaddr));
+
+	if (inb(ioaddr+0) == 0xff) return -ENODEV;
+
+	while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
+		 rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
+	{
+		if (boguscount-- == 0) return -ENODEV;
+	}
+
+	PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name));
+
+	for (i=0; i<32; i++)
+		if ( (data = rd_port(ioaddr)) != 0xff) break;
+	if (data==0xff) return -ENODEV;
+
+	PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name));
+
+	if (		(data == SA_ADDR0) &&
+	     (rd_port(ioaddr) == SA_ADDR1) &&
+	     (rd_port(ioaddr) == SA_ADDR2) ) {
+		for (i=0; i<4; i++) rd_port(ioaddr);
+		if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
+		     (rd_port(ioaddr) != NI5010_MAGICVAL2) ) {
+		     	return -ENODEV;
+		}
+	} else return -ENODEV;
+	
+	PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
+
+	if (dev == NULL) {
+		dev = init_etherdev(0,0);
+		if (dev == NULL) {
+			printk(KERN_WARNING "%s: Failed to allocate device memory\n", boardname);
+			return -ENOMEM;
+		}
+	}
+
+	if (NI5010_DEBUG && version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	printk("NI5010 ethercard probe at 0x%x: ", ioaddr);
+
+	dev->base_addr = ioaddr;
+
+	for (i=0; i<6; i++) {
+		outw(i, IE_GP);
+		printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM));
+	}
+
+	PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
+
+#ifdef jumpered_interrupts
+	if (dev->irq == 0xff)
+		;
+	else if (dev->irq < 2) {
+		PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
+
+		autoirq_setup(0);
+		trigger_irq(ioaddr);
+		dev->irq = autoirq_report(2);
+
+		PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
+
+		if (dev->irq == 0) {
+			printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
+			return -EAGAIN;
+		}
+		PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
+	} else if (dev->irq == 2) {
+		dev->irq = 9;
+	}
+#endif	/* jumpered_irq */
+	PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
+
+	/* DMA is not supported (yet?), so no use detecting it */
+
+	if (dev->priv == NULL) {
+		dev->priv = kmalloc(sizeof(struct ni5010_local), GFP_KERNEL|GFP_DMA);
+		if (dev->priv == NULL) {
+			printk(KERN_WARNING "%s: Failed to allocate private memory\n", dev->name);
+			return -ENOMEM;
+		}
+	}
+
+	PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name));
+
+/* get the size of the onboard receive buffer
+ * higher addresses than bufsize are wrapped into real buffer
+ * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer
+ */
+	if (!bufsize_rcv) {
+        	outb(1, IE_MMODE);      /* Put Rcv buffer on system bus */
+        	outw(0, IE_GP);		/* Point GP at start of packet */
+        	outb(0, IE_RBUF);	/* set buffer byte 0 to 0 */
+        	for (i = 1; i < 0xff; i++) {
+                	outw(i << 8, IE_GP); /* Point GP at packet size to be tested */
+                	outb(i, IE_RBUF);
+                	outw(0x0, IE_GP); /* Point GP at start of packet */
+                	data = inb(IE_RBUF);
+                	if (data == i) break;
+        	}
+		bufsize_rcv = i << 8;
+        	outw(0, IE_GP);		/* Point GP at start of packet */
+        	outb(0, IE_RBUF);	/* set buffer byte 0 to 0 again */
+	}
+        printk("// bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
+	memset(dev->priv, 0, sizeof(struct ni5010_local));
+
+	/* Grab the region so we can find another board if autoIRQ fails. */
+	request_region(ioaddr, NI5010_IO_EXTENT, boardname);
+	
+	dev->open		= ni5010_open;
+	dev->stop		= ni5010_close;
+	dev->hard_start_xmit	= ni5010_send_packet;
+	dev->get_stats		= ni5010_get_stats;
+	dev->set_multicast_list = &ni5010_set_multicast_list;
+
+	/* Fill in the fields of the device structure with ethernet values. */
+	ether_setup(dev);
+	
+	dev->tbusy = 0;
+	dev->interrupt = 0;
+	dev->start = 0;
+
+	dev->flags &= ~IFF_MULTICAST;	/* Multicast doesn't work */
+
+	/* Shut up the ni5010 */
+	outb(0, EDLC_RMASK);	/* Mask all receive interrupts */
+	outb(0, EDLC_XMASK);	/* Mask all xmit interrupts */
+	outb(0xff, EDLC_RCLR);	/* Kill all pending rcv interrupts */
+	outb(0xff, EDLC_XCLR); 	/* Kill all pending xmt interrupts */
+
+	printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq);
+	if (dev->dma) printk(" & DMA %d", dev->dma);
+	printk(".\n");
+
+	printk(KERN_INFO "Join the NI5010 driver development team!\n");
+	printk(KERN_INFO "Mail to a.mohr@mailto.de or jvbest@wi.leidenuniv.nl\n");
+	return 0;
+}
+
+/* 
+ * Open/initialize the board.  This is called (in the current kernel)
+ * sometime after booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+   
+static int ni5010_open(struct device *dev)
+{
+	int ioaddr = dev->base_addr;
+	int i;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); 
+	
+	if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) {
+		printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq);
+		return -EAGAIN;
+	}
+	PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name));
+        /*
+         * Always allocate the DMA channel after the IRQ,
+         * and clean up on failure.
+         */
+#ifdef jumpered_dma
+        if (request_dma(dev->dma, cardname)) {
+		printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma);
+                free_irq(dev->irq, NULL);
+                return -EAGAIN;
+        }
+#endif	/* jumpered_dma */
+
+	PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name));
+	/* Reset the hardware here.  Don't forget to set the station address. */
+
+	outb(RS_RESET, EDLC_RESET);	/* Hold up EDLC_RESET while configing board */
+	outb(0, IE_RESET);		/* Hardware reset of ni5010 board */
+	outb(XMD_LBC, EDLC_XMODE);	/* Only loopback xmits */
+
+	PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name));
+	/* Set the station address */
+	for(i = 0;i < 6; i++) {
+		outb(dev->dev_addr[i], EDLC_ADDR + i);
+	}
+	
+	PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); 
+	outb(0, EDLC_XMASK);	/* No xmit interrupts for now */
+	outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); 
+				/* Normal packet xmit mode */
+	outb(0xff, EDLC_XCLR);	/* Clear all pending xmit interrupts */
+	outb(RMD_BROADCAST, EDLC_RMODE);
+				/* Receive broadcast and normal packets */
+	reset_receiver(dev);	/* Ready ni5010 for receiving packets */
+	
+	outb(0, EDLC_RESET);	/* Un-reset the ni5010 */
+	
+	dev->tbusy = 0;
+	dev->interrupt = 0;
+	dev->start = 1;
+	
+	if (NI5010_DEBUG) show_registers(dev); 
+
+    	MOD_INC_USE_COUNT;
+	PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
+     	return 0;
+}
+
+static void reset_receiver(struct device *dev)
+{
+	int ioaddr = dev->base_addr;
+	
+	PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name));
+	outw(0, IE_GP);		/* Receive packet at start of buffer */
+	outb(0xff, EDLC_RCLR);	/* Clear all pending rcv interrupts */
+	outb(0, IE_MMODE);	/* Put EDLC to rcv buffer */
+	outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */
+	outb(0xff, EDLC_RMASK);	/* Enable all rcv interrupts */
+}
+
+static int ni5010_send_packet(struct sk_buff *skb, struct device *dev)
+{
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
+	if (dev->tbusy) {
+		/* 
+                 * If we get here, some higher level has decided we are broken.
+		 * There should really be a "kick me" function call instead. 
+		 */
+		int tickssofar = jiffies - dev->trans_start;
+		if (tickssofar < 5)
+			return 1;
+		printk("tbusy\n");
+		printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
+			   tx_done(dev) ? "IRQ conflict" : "network cable problem");
+		/* Try to restart the adaptor. */
+		/* FIXME: Give it a real kick here */
+		chipset_init(dev, 1);
+		dev->tbusy=0;
+		dev->trans_start = jiffies;
+	}
+
+	/* 
+         * Block a timer-based transmit from overlapping.  This could better be
+	 * done with atomic_swap(1, dev->tbusy), but test_and_set_bit() works as well. 
+	 */
+	if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) {
+		printk(KERN_WARNING "%s: Transmitter access conflict.\n", dev->name);
+		return 1;
+	} else {
+		int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+
+		hardware_send_packet(dev, (unsigned char *)skb->data, length);
+		dev->trans_start = jiffies;
+	}
+	dev_kfree_skb (skb, FREE_WRITE);
+
+	return 0;
+}
+
+/* 
+ * The typical workload of the driver:
+ * Handle the network interface interrupts. 
+ */
+static void 
+ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct device *dev = dev_id;
+	struct ni5010_local *lp;
+	int ioaddr, status;
+	int xmit_was_error = 0;
+
+	if (dev == NULL || dev->irq != irq) {
+		printk(KERN_WARNING "%s: irq %d for unknown device.\n", 
+				boardname, irq);
+		return;
+	}
+
+	if (dev->interrupt) printk(KERN_WARNING "%s: Reentering IRQ-handler!\n", dev->name);
+	dev->interrupt = 1;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
+
+	ioaddr = dev->base_addr;
+	lp = (struct ni5010_local *)dev->priv;
+	
+	status = inb(IE_ISTAT); 
+	PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
+		
+        if ((status & IS_R_INT) == 0) ni5010_rx(dev);
+
+        if ((status & IS_X_INT) == 0) {
+                xmit_was_error = process_xmt_interrupt(dev);
+        }
+
+        if ((status & IS_DMA_INT) == 0) {
+                PRINTK((KERN_DEBUG "%s: DMA complete (???)\n", dev->name));
+                outb(0, IE_DMA_RST); /* Reset DMA int */
+        }
+
+	if (!xmit_was_error) 
+		reset_receiver(dev); 
+
+	dev->interrupt = 0;
+	return;
+}
+
+
+static void dump_packet(void *buf, int len)
+{
+	int i;
+	
+	printk(KERN_DEBUG "Packet length = %#4x\n", len);
+	for (i = 0; i < len; i++){
+		if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
+		if (i % 2 == 0) printk(" ");
+		printk("%2.2x", ((unsigned char *)buf)[i]);
+		if (i % 16 == 15) printk("\n");
+	}
+	printk("\n");
+	
+	return;
+}
+
+/* We have a good packet, get it out of the buffer. */
+static void
+ni5010_rx(struct device *dev)
+{
+	struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+	int ioaddr = dev->base_addr;
+	unsigned char rcv_stat;
+	struct sk_buff *skb;
+	
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); 
+	
+	rcv_stat = inb(EDLC_RSTAT);
+	PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); 
+	
+	if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
+		PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
+		lp->stats.rx_errors++;
+		if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++;
+		if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++;
+		if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++;
+		if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++;
+        	outb(0xff, EDLC_RCLR); /* Clear the interrupt */
+		return;
+	}
+	
+        outb(0xff, EDLC_RCLR);  /* Clear the interrupt */
+
+	lp->i_pkt_size = inw(IE_RCNT);
+	if (lp->i_pkt_size > ETH_FRAME_LEN || lp->i_pkt_size < 10 ) {
+		PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", 
+			dev->name, lp->i_pkt_size));
+		lp->stats.rx_errors++;
+		lp->stats.rx_length_errors++;
+		return;
+	}
+
+	/* Malloc up new buffer. */
+	skb = dev_alloc_skb(lp->i_pkt_size + 3);
+	if (skb == NULL) {
+		printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
+		lp->stats.rx_dropped++;
+		return;
+	}
+	
+	skb->dev = dev;
+	skb_reserve(skb, 2);
+	
+	/* Read packet into buffer */
+        outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */
+	outw(0, IE_GP);	/* Seek to beginning of packet */
+	insb(IE_RBUF, skb_put(skb, lp->i_pkt_size), lp->i_pkt_size); 
+	
+	if (NI5010_DEBUG >= 4) 
+		dump_packet(skb->data, skb->len); 
+		
+	skb->protocol = eth_type_trans(skb,dev);
+	netif_rx(skb);
+	lp->stats.rx_packets++;
+	lp->stats.rx_bytes += lp->i_pkt_size;
+
+	PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", 
+		dev->name, lp->i_pkt_size));
+	
+}
+
+static int process_xmt_interrupt(struct device *dev)
+{
+	struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+	int ioaddr = dev->base_addr;
+	int xmit_stat;
+
+	PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
+
+	xmit_stat = inb(EDLC_XSTAT);
+	PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
+	
+	outb(0, EDLC_XMASK);	/* Disable xmit IRQ's */
+	outb(0xff, EDLC_XCLR);	/* Clear all pending xmit IRQ's */
+	
+	if (xmit_stat & XS_COLL){
+                printk("ether collision\n"); /* FIXME: remove */
+		PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", 
+			dev->name));
+		outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
+		/* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
+		outb(MM_EN_XMT | MM_MUX, IE_MMODE);
+		outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
+		lp->stats.collisions++;
+		return 1;
+	}
+
+	/* FIXME: handle other xmt error conditions */
+
+	lp->stats.tx_packets++;
+	lp->stats.tx_bytes += lp->o_pkt_size;
+	dev->tbusy = 0;
+	mark_bh(NET_BH);	/* Inform upper layers. */
+			
+	PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", 
+		dev->name, lp->o_pkt_size));
+
+	return 0;
+}
+
+/* The inverse routine to ni5010_open(). */
+static int
+ni5010_close(struct device *dev)
+{
+	int ioaddr = dev->base_addr;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
+#ifdef jumpered_interrupts	
+	free_irq(dev->irq, NULL);
+#endif
+	/* Put card in held-RESET state */
+	outb(0, IE_MMODE);
+	outb(RS_RESET, EDLC_RESET);
+
+        dev->tbusy = 1;
+	dev->start = 0;
+
+	MOD_DEC_USE_COUNT;
+	PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
+	return 0;
+
+}
+
+/* Get the current statistics.	This may be called with the card open or
+   closed. */
+static struct net_device_stats *
+ni5010_get_stats(struct device *dev)
+{
+	struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
+	
+	if (NI5010_DEBUG) show_registers(dev);
+	
+	/* cli(); */
+	/* Update the statistics from the device registers. */
+	/* We do this in the interrupt handler */
+	/* sti(); */
+
+	return &lp->stats;
+}
+
+/* Set or clear the multicast filter for this adaptor.
+   num_addrs == -1      Promiscuous mode, receive all packets
+   num_addrs == 0       Normal mode, clear multicast list
+   num_addrs > 0        Multicast mode, receive normal and MC packets, and do
+                        best-effort filtering.
+*/
+static void
+ni5010_set_multicast_list(struct device *dev)
+{
+	short ioaddr = dev->base_addr;  
+
+	PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
+
+	if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) {
+		dev->flags |= IFF_PROMISC;
+		outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
+		PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
+	} else if (dev->mc_list) {
+		/* Sorry, multicast not supported */
+		PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name));
+		outb(RMD_BROADCAST, EDLC_RMODE);
+	} else {
+		PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
+		outb(RMD_BROADCAST, EDLC_RMODE);  /* Disable promiscuous mode, use normal mode */
+	}
+}
+
+extern void hardware_send_packet(struct device *dev, char *buf, int length)
+{
+	struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+	int ioaddr = dev->base_addr;
+	unsigned long flags;
+	unsigned int buf_offs;
+
+	PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
+	
+        if (length > ETH_FRAME_LEN) {
+                PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
+                        dev->name));
+                return;
+        }
+
+	if (NI5010_DEBUG) show_registers(dev);
+
+	if (inb(IE_ISTAT) & IS_EN_XMT) {
+		PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", 
+			dev->name));
+		return;
+	}
+	
+	if (NI5010_DEBUG > 3) dump_packet(buf, length);
+
+        buf_offs = NI5010_BUFSIZE - length;
+        lp->o_pkt_size = length;
+
+	save_flags(flags);	
+	cli();
+
+	outb(0, EDLC_RMASK);	/* Mask all receive interrupts */
+	outb(0, IE_MMODE);	/* Put Xmit buffer on system bus */
+	outb(0xff, EDLC_RCLR);	/* Clear out pending rcv interrupts */
+
+	outw(buf_offs, IE_GP); /* Point GP at start of packet */
+	outsb(IE_XBUF, buf, length); /* Put data in buffer */
+	outw(buf_offs, IE_GP); /* Rewrite where packet starts */
+
+	/* should work without that outb() (Crynwr used it) */
+	/*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
+	outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
+	outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
+
+	restore_flags(flags);
+
+	if (NI5010_DEBUG) show_registers(dev);	
+}
+
+extern void chipset_init(struct device *dev, int startp)
+{
+	/* FIXME: Move some stuff here */
+	PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
+}
+
+static void show_registers(struct device *dev)
+{
+	int ioaddr = dev->base_addr;
+	
+	PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
+	PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
+	PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
+	PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
+	PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
+	PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
+	PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
+}
+
+#ifdef MODULE
+static struct device dev_ni5010 = {
+        "          ",
+        0, 0, 0, 0,
+        0, 0,
+        0, 0, 0, NULL, ni5010_probe };
+
+int io  = 0;
+int irq = 0;
+
+MODULE_PARM(io, "i");
+MODULE_PARM(irq, "i");
+
+int init_module(void)
+{
+	int result;
+	
+	PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
+	/*
+	if(io <= 0 || irq == 0){
+	   	printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
+		printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
+	   	return -EINVAL;
+	}
+	*/
+	if (io <= 0){
+		printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
+	}
+
+	PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
+        dev_ni5010.irq=irq;
+        dev_ni5010.base_addr=io;
+        if ((result = register_netdev(&dev_ni5010)) != 0) {
+        	PRINTK((KERN_WARNING "%s: register_netdev returned %d.\n", 
+        		boardname, result));
+                return -EIO;
+        }
+        return 0;
+}
+
+void
+cleanup_module(void)
+{
+	PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
+
+        unregister_netdev(&dev_ni5010);
+
+	release_region(dev_ni5010.base_addr, NI5010_IO_EXTENT);
+	if (dev_ni5010.priv != NULL){
+	        kfree(dev_ni5010.priv);
+	        dev_ni5010.priv = NULL;
+	}
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ *  compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c"
+ *  version-control: t
+ *  kept-new-versions: 5
+ *  tab-width: 4
+ * End:
+ */