patch-2.3.21 linux/drivers/net/sealevel.c

• Lines: 472
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.20/linux/drivers/net/sealevel.c
• Orig date: Wed Aug 18 11:36:42 1999

diff -u --recursive --new-file v2.3.20/linux/drivers/net/sealevel.c linux/drivers/net/sealevel.c
@@ -1,471 +0,0 @@
-#define LINUX_21
-
-/*
- *	Sealevel Systems 4021 driver.
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- *	(c) Copyright 1999 Building Number Three Ltd
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/net.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <net/arp.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/byteorder.h>
-#include "syncppp.h"
-#include "z85230.h"
-
-
-struct slvl_device
-{
-	struct z8530_channel *chan;
-	struct ppp_device netdev;
-	char name[16];
-	int channel;
-};
-
-
-struct slvl_board
-{
-	struct slvl_device dev[2];
-	struct z8530_dev board;
-	int iobase;
-};
-
-/*
- *	Network driver support routines
- */
-
-/*
- *	Frame receive. Simple for our card as we do sync ppp and there
- *	is no funny garbage involved
- */
- 
-static void sealevel_input(struct z8530_channel *c, struct sk_buff *skb)
-{
-	/* Drop the CRC - its not a good idea to try and negotiate it ;) */
-	skb_trim(skb, skb->len-2);
-	skb->protocol=htons(ETH_P_WAN_PPP);
-	skb->mac.raw=skb->data;
-	skb->dev=c->netdevice;
-	/*
-	 *	Send it to the PPP layer. We dont have time to process
-	 *	it right now.
-	 */
-	netif_rx(skb);
-}
- 
-/*
- *	We've been placed in the UP state
- */ 
- 
-static int sealevel_open(struct net_device *d)
-{
-	struct slvl_device *slvl=d->priv;
-	int err = -1;
-	int unit = slvl->channel;
-	
-	/*
-	 *	Link layer up. 
-	 */
-
-	switch(unit)
-	{
-		case 0:
-			err=z8530_sync_dma_open(d, slvl->chan);
-			break;
-		case 1:
-			err=z8530_sync_open(d, slvl->chan);
-			break;
-	}
-	
-	if(err)
-		return err;
-	/*
-	 *	Begin PPP
-	 */
-	err=sppp_open(d);
-	if(err)
-	{
-		switch(unit)
-		{
-			case 0:
-				z8530_sync_dma_close(d, slvl->chan);
-				break;
-			case 1:
-				z8530_sync_close(d, slvl->chan);
-				break;
-		}				
-		return err;
-	}
-	
-	slvl->chan->rx_function=sealevel_input;
-	
-	/*
-	 *	Go go go
-	 */
-	d->tbusy=0;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static int sealevel_close(struct net_device *d)
-{
-	struct slvl_device *slvl=d->priv;
-	int unit = slvl->channel;
-	
-	/*
-	 *	Discard new frames
-	 */
-	
-	slvl->chan->rx_function=z8530_null_rx;
-		
-	/*
-	 *	PPP off
-	 */
-	sppp_close(d);
-	/*
-	 *	Link layer down
-	 */
-	d->tbusy=1;
-	
-	switch(unit)
-	{
-		case 0:
-			z8530_sync_dma_close(d, slvl->chan);
-			break;
-		case 1:
-			z8530_sync_close(d, slvl->chan);
-			break;
-	}
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-static int sealevel_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)
-{
-	/* struct slvl_device *slvl=d->priv;
-	   z8530_ioctl(d,&slvl->sync.chanA,ifr,cmd) */
-	return sppp_do_ioctl(d, ifr,cmd);
-}
-
-static struct enet_statistics *sealevel_get_stats(struct net_device *d)
-{
-	struct slvl_device *slvl=d->priv;
-	if(slvl)
-		return z8530_get_stats(slvl->chan);
-	else
-		return NULL;
-}
-
-/*
- *	Passed PPP frames, fire them downwind.
- */
- 
-static int sealevel_queue_xmit(struct sk_buff *skb, struct net_device *d)
-{
-	struct slvl_device *slvl=d->priv;
-	return z8530_queue_xmit(slvl->chan, skb);
-}
-
-#ifdef LINUX_21
-static int sealevel_neigh_setup(struct neighbour *n)
-{
-	if (n->nud_state == NUD_NONE) {
-		n->ops = &arp_broken_ops;
-		n->output = n->ops->output;
-	}
-	return 0;
-}
-
-static int sealevel_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
-{
-	if (p->tbl->family == AF_INET) {
-		p->neigh_setup = sealevel_neigh_setup;
-		p->ucast_probes = 0;
-		p->mcast_probes = 0;
-	}
-	return 0;
-}
-
-#else
-
-static int return_0(struct net_device *d)
-{
-	return 0;
-}
-
-#endif
-
-/*
- *	Description block for a Comtrol Hostess SV11 card
- */
- 
-static struct slvl_board *slvl_init(int iobase, int irq, int txdma, int rxdma, int slow)
-{
-	struct z8530_dev *dev;
-	struct slvl_device *sv;
-	struct slvl_board *b;
-	
-	int i;
-	unsigned long flags;
-	int u;
-	
-	/*
-	 *	Get the needed I/O space
-	 */
-	 
-	if(check_region(iobase, 8))
-	{	
-		printk(KERN_WARNING "sealevel: I/O 0x%X already in use.\n", iobase);
-		return NULL;
-	}
-	request_region(iobase, 8, "Sealevel 4021");
-	
-	b=(struct slvl_board *)kmalloc(sizeof(struct slvl_board), GFP_KERNEL);
-	if(!b)
-		goto fail3;
-			
-	memset(b, 0, sizeof(*sv));
-
-	b->dev[0].chan = &b->board.chanA;	
-	b->dev[1].chan = &b->board.chanB;
-	
-	dev=&b->board;
-	
-	/*
-	 *	Stuff in the I/O addressing
-	 */
-	 
-	dev->active = 0;
-
-	b->iobase = iobase;
-	
-	/*
-	 *	Select 8530 delays for the old board
-	 */
-	 
-	if(slow)
-		iobase |= Z8530_PORT_SLEEP;
-		
-	dev->chanA.ctrlio=iobase+1;
-	dev->chanA.dataio=iobase;
-	dev->chanB.ctrlio=iobase+3;
-	dev->chanB.dataio=iobase+2;
-	
-	dev->chanA.irqs=&z8530_nop;
-	dev->chanB.irqs=&z8530_nop;
-	
-	/*
-	 *	Assert DTR enable DMA
-	 */
-	 
-	outb(3|(1<<7), b->iobase+4);	
-	
-
-	/* We want a fast IRQ for this device. Actually we'd like an even faster
-	   IRQ ;) - This is one driver RtLinux is made for */
-   
-	if(request_irq(irq, &z8530_interrupt, SA_INTERRUPT, "SeaLevel", dev)<0)
-	{
-		printk(KERN_WARNING "sealevel: IRQ %d already in use.\n", irq);
-		goto fail2;
-	}
-	
-	dev->irq=irq;
-	dev->chanA.private=&b->dev[0];
-	dev->chanB.private=&b->dev[1];
-	dev->chanA.netdevice=&b->dev[0].netdev.dev;
-	dev->chanB.netdevice=&b->dev[1].netdev.dev;
-	dev->chanA.dev=dev;
-	dev->chanB.dev=dev;
-	dev->name=b->dev[0].name;
-
-	dev->chanA.txdma=3;
-	dev->chanA.rxdma=1;
-	if(request_dma(dev->chanA.txdma, "SeaLevel (TX)")!=0)
-		goto fail;
-		
-	if(request_dma(dev->chanA.rxdma, "SeaLevel (RX)")!=0)
-		goto dmafail;
-	
-	save_flags(flags);
-	cli();
-	
-	/*
-	 *	Begin normal initialise
-	 */
-	 
-	if(z8530_init(dev)!=0)
-	{
-		printk(KERN_ERR "Z8530 series device not found.\n");
-		goto dmafail2;
-	}
-	if(dev->type==Z85C30)
-	{
-		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
-		z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream);
-	}
-	else
-	{
-		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
-		z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream_85230);
-	}
-
-	/*
-	 *	Now we can take the IRQ
-	 */
-	
-	restore_flags(flags);
-
-	for(u=0; u<2; u++)
-	{
-		sv=&b->dev[u];
-		sv->channel = u;
-	
-		for(i=0;i<999;i++)
-		{
-			sprintf(sv->name,"hdlc%d", i);
-			if(dev_get(sv->name)==NULL)
-			{
-				struct net_device *d=sv->chan->netdevice;
-	
-				/* 
-				 *	Initialise the PPP components
-				 */
-				sppp_attach(&sv->netdev);
-			
-				/*
-				 *	Local fields
-				 */	
-				sprintf(sv->name,"hdlc%d", i);
-				
-				d->name = sv->name;
-				d->base_addr = iobase;
-				d->irq = irq;
-				d->priv = sv;
-				d->init = NULL;
-			
-				d->open = sealevel_open;
-				d->stop = sealevel_close;
-				d->hard_start_xmit = sealevel_queue_xmit;
-				d->get_stats = sealevel_get_stats;
-				d->set_multicast_list = NULL;
-				d->do_ioctl = sealevel_ioctl;
-#ifdef LINUX_21			
-				d->neigh_setup = sealevel_neigh_setup_dev;
-				dev_init_buffers(d);
-#else
-				d->init = return_0;
-#endif
-				d->set_mac_address = NULL;
-			
-				if(register_netdev(d)==-1)
-				{
-					printk(KERN_ERR "%s: unable to register device.\n",
-						sv->name);
-					goto fail_unit;
-				}				
-
-				break;
-			}
-		}
-	}
-	z8530_describe(dev, "I/O", iobase);
-	dev->active=1;
-	return b;
-
-fail_unit:
-	if(u==1)
-		unregister_netdev(b->dev[0].chan->netdevice);
-	
-dmafail2:
-	free_dma(dev->chanA.rxdma);
-dmafail:
-	free_dma(dev->chanA.txdma);
-fail:
-	free_irq(irq, dev);
-fail2:
-	kfree(b);
-fail3:
-	release_region(iobase,8);
-	return NULL;
-}
-
-static void slvl_shutdown(struct slvl_board *b)
-{
-	int u;
-
-	z8530_shutdown(&b->board);
-	
-	for(u=0; u<2; u++)
-	{
-		sppp_detach(&b->dev[u].netdev.dev);
-		unregister_netdev(&b->dev[u].netdev.dev);
-	}
-	
-	free_irq(b->board.irq, &b->board);
-	free_dma(b->board.chanA.rxdma);
-	free_dma(b->board.chanA.txdma);
-	/* DMA off on the card, drop DTR */
-	outb(0, b->iobase);
-	release_region(b->iobase, 8);
-}
-
-#ifdef MODULE
-
-static int io=0x238;
-static int txdma=1;
-static int rxdma=3;
-static int irq=5;
-static int slow=0;
-
-#ifdef LINUX_21
-MODULE_PARM(io,"i");
-MODULE_PARM_DESC(io, "The I/O base of the Sealevel card");
-MODULE_PARM(txdma,"i");
-MODULE_PARM_DESC(txdma, "Transmit DMA channel");
-MODULE_PARM(rxdma,"i");
-MODULE_PARM_DESC(rxdma, "Receive DMA channel");
-MODULE_PARM(irq,"i");
-MODULE_PARM_DESC(irq, "The interrupt line setting for the SeaLevel card");
-MODULE_PARM(slow,"i");
-MODULE_PARM_DESC(slow, "Set this for an older Sealevel card such as the 4012");
-
-MODULE_AUTHOR("Bulding Number Three Ltd");
-MODULE_DESCRIPTION("Modular driver for the SeaLevel 4021");
-#endif
-
-static struct slvl_board *slvl_unit;
-
-int init_module(void)
-{
-	printk(KERN_INFO "SeaLevel Z85230 Synchronous Driver v 0.01.\n");
-	printk(KERN_INFO "(c) Copyright 1998, Building Number Three Ltd.\n");	
-	if((slvl_unit=slvl_init(io,irq, txdma, rxdma, slow))==NULL)
-		return -ENODEV;
-	return 0;
-}
-
-void cleanup_module(void)
-{
-	if(slvl_unit)
-		slvl_shutdown(slvl_unit);
-}
-
-#endif
-