patch-2.3.21 linux/drivers/net/hostess_sv11.c

• Lines: 435
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.20/linux/drivers/net/hostess_sv11.c
• Orig date: Wed Aug 18 11:36:42 1999

diff -u --recursive --new-file v2.3.20/linux/drivers/net/hostess_sv11.c linux/drivers/net/hostess_sv11.c
@@ -1,434 +0,0 @@
-#define LINUX_21
-
-/*
- *	Comtrol SV11 card driver
- *
- *	This is a slightly odd Z85230 synchronous driver. All you need to
- *	know basically is
- *
- *	Its a genuine Z85230
- *
- *	It supports DMA using two DMA channels in SYNC mode. The driver doesn't
- *	use these facilities
- *	
- *	The control port is at io+1, the data at io+3 and turning off the DMA
- *	is done by writing 0 to io+4
- *
- *	The hardware does the bus handling to avoid the need for delays between
- *	touching control registers.
- *
- *	Port B isnt wired (why - beats me)
- */
-
-#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"
-
-static int dma;
-
-struct sv11_device
-{
-	struct z8530_dev sync;
-	struct ppp_device netdev;
-	char name[16];
-};
-
-/*
- *	Network driver support routines
- */
-
-/*
- *	Frame receive. Simple for our card as we do sync ppp and there
- *	is no funny garbage involved
- */
- 
-static void hostess_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 hostess_open(struct net_device *d)
-{
-	struct sv11_device *sv11=d->priv;
-	int err = -1;
-	
-	/*
-	 *	Link layer up
-	 */
-	switch(dma)
-	{
-		case 0:
-			err=z8530_sync_open(d, &sv11->sync.chanA);
-			break;
-		case 1:
-			err=z8530_sync_dma_open(d, &sv11->sync.chanA);
-			break;
-		case 2:
-			err=z8530_sync_txdma_open(d, &sv11->sync.chanA);
-			break;
-	}
-	
-	if(err)
-		return err;
-	/*
-	 *	Begin PPP
-	 */
-	err=sppp_open(d);
-	if(err)
-	{
-		switch(dma)
-		{
-			case 0:
-				z8530_sync_close(d, &sv11->sync.chanA);
-				break;
-			case 1:
-				z8530_sync_dma_close(d, &sv11->sync.chanA);
-				break;
-			case 2:
-				z8530_sync_txdma_close(d, &sv11->sync.chanA);
-				break;
-		}				
-		return err;
-	}
-	sv11->sync.chanA.rx_function=hostess_input;
-	
-	/*
-	 *	Go go go
-	 */
-	d->tbusy=0;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static int hostess_close(struct net_device *d)
-{
-	struct sv11_device *sv11=d->priv;
-	/*
-	 *	Discard new frames
-	 */
-	sv11->sync.chanA.rx_function=z8530_null_rx;
-	/*
-	 *	PPP off
-	 */
-	sppp_close(d);
-	/*
-	 *	Link layer down
-	 */
-	d->tbusy=1;
-	
-	switch(dma)
-	{
-		case 0:
-			z8530_sync_close(d, &sv11->sync.chanA);
-			break;
-		case 1:
-			z8530_sync_dma_close(d, &sv11->sync.chanA);
-			break;
-		case 2:
-			z8530_sync_txdma_close(d, &sv11->sync.chanA);
-			break;
-	}
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-static int hostess_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)
-{
-	/* struct sv11_device *sv11=d->priv;
-	   z8530_ioctl(d,&sv11->sync.chanA,ifr,cmd) */
-	return sppp_do_ioctl(d, ifr,cmd);
-}
-
-static struct enet_statistics *hostess_get_stats(struct net_device *d)
-{
-	struct sv11_device *sv11=d->priv;
-	if(sv11)
-		return z8530_get_stats(&sv11->sync.chanA);
-	else
-		return NULL;
-}
-
-/*
- *	Passed PPP frames, fire them downwind.
- */
- 
-static int hostess_queue_xmit(struct sk_buff *skb, struct net_device *d)
-{
-	struct sv11_device *sv11=d->priv;
-	return z8530_queue_xmit(&sv11->sync.chanA, skb);
-}
-
-#ifdef LINUX_21
-static int hostess_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 hostess_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
-{
-	if (p->tbl->family == AF_INET) {
-		p->neigh_setup = hostess_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 sv11_device *sv11_init(int iobase, int irq)
-{
-	struct z8530_dev *dev;
-	struct sv11_device *sv;
-	int i;
-	unsigned long flags;
-	
-	/*
-	 *	Get the needed I/O space
-	 */
-	 
-	if(check_region(iobase, 8))
-	{	
-		printk(KERN_WARNING "hostess: I/O 0x%X already in use.\n", iobase);
-		return NULL;
-	}
-	request_region(iobase, 8, "Comtrol SV11");
-	
-	sv=(struct sv11_device *)kmalloc(sizeof(struct sv11_device), GFP_KERNEL);
-	if(!sv)
-		goto fail3;
-			
-	memset(sv, 0, sizeof(*sv));
-	
-	dev=&sv->sync;
-	
-	/*
-	 *	Stuff in the I/O addressing
-	 */
-	 
-	dev->active = 0;
-	
-	dev->chanA.ctrlio=iobase+1;
-	dev->chanA.dataio=iobase+3;
-	dev->chanB.ctrlio=-1;
-	dev->chanB.dataio=-1;
-	dev->chanA.irqs=&z8530_nop;
-	dev->chanB.irqs=&z8530_nop;
-	
-	outb(0, iobase+4);		/* DMA off */
-	
-	/* 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, "Hostess SV/11", dev)<0)
-	{
-		printk(KERN_WARNING "hostess: IRQ %d already in use.\n", irq);
-		goto fail2;
-	}
-	
-	dev->irq=irq;
-	dev->chanA.private=sv;
-	dev->chanA.netdevice=&sv->netdev.dev;
-	dev->chanA.dev=dev;
-	dev->chanB.dev=dev;
-	dev->name=sv->name;
-	
-	if(dma)
-	{
-		/*
-		 *	You can have DMA off or 1 and 3 thats the lot
-		 *	on the Comtrol.
-		 */
-		dev->chanA.txdma=3;
-		dev->chanA.rxdma=1;
-		outb(0x03|0x08, iobase+4);		/* DMA on */
-		if(request_dma(dev->chanA.txdma, "Hostess SV/11 (TX)")!=0)
-			goto fail;
-			
-		if(dma==1)
-		{
-			if(request_dma(dev->chanA.rxdma, "Hostess SV/11 (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;
-	}
-	z8530_channel_load(&dev->chanB, z8530_dead_port);
-	if(dev->type==Z85C30)
-		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
-	else
-		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
-	
-	restore_flags(flags);
-
-
-	/*
-	 *	Now we can take the IRQ
-	 */
-	
-	for(i=0;i<999;i++)
-	{
-		sprintf(sv->name,"hdlc%d", i);
-		if(dev_get(sv->name)==NULL)
-		{
-			struct net_device *d=dev->chanA.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 = hostess_open;
-			d->stop = hostess_close;
-			d->hard_start_xmit = hostess_queue_xmit;
-			d->get_stats = hostess_get_stats;
-			d->set_multicast_list = NULL;
-			d->do_ioctl = hostess_ioctl;
-#ifdef LINUX_21			
-			d->neigh_setup = hostess_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;
-			}				
-
-			z8530_describe(dev, "I/O", iobase);
-			dev->active=1;
-		 	return sv;	
-		}
-	}
-dmafail2:
-	if(dma==1)
-		free_dma(dev->chanA.rxdma);
-dmafail:
-	if(dma)
-		free_dma(dev->chanA.txdma);
-fail:
-	free_irq(irq, dev);
-fail2:
-	kfree(sv);
-fail3:
-	release_region(iobase,8);
-	return NULL;
-}
-
-static void sv11_shutdown(struct sv11_device *dev)
-{
-	sppp_detach(&dev->netdev.dev);
-	z8530_shutdown(&dev->sync);
-	unregister_netdev(&dev->netdev.dev);
-	free_irq(dev->sync.irq, dev);
-	if(dma)
-	{
-		if(dma==1)
-			free_dma(dev->sync.chanA.rxdma);
-		free_dma(dev->sync.chanA.txdma);
-	}
-	release_region(dev->sync.chanA.ctrlio-1, 8);
-}
-
-#ifdef MODULE
-
-static int io=0x200;
-static int irq=9;
-
-#ifdef LINUX_21
-MODULE_PARM(io,"i");
-MODULE_PARM_DESC(io, "The I/O base of the Comtrol Hostess SV11 card");
-MODULE_PARM(dma,"i");
-MODULE_PARM_DESC(dma, "Set this to 1 to use DMA1/DMA3 for TX/RX");
-MODULE_PARM(irq,"i");
-MODULE_PARM_DESC(irq, "The interrupt line setting for the Comtrol Hostess SV11 card");
-
-MODULE_AUTHOR("Bulding Number Three Ltd");
-MODULE_DESCRIPTION("Modular driver for the Comtrol Hostess SV11");
-#endif
-
-static struct sv11_device *sv11_unit;
-
-int init_module(void)
-{
-	printk(KERN_INFO "SV-11 Z85230 Synchronous Driver v 0.02.\n");
-	printk(KERN_INFO "(c) Copyright 1998, Building Number Three Ltd.\n");	
-	if((sv11_unit=sv11_init(io,irq))==NULL)
-		return -ENODEV;
-	return 0;
-}
-
-void cleanup_module(void)
-{
-	if(sv11_unit)
-		sv11_shutdown(sv11_unit);
-}
-
-#endif
-