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Commit 52e8a6a2 authored by Krzysztof Hałasa's avatar Krzysztof Hałasa
Browse files

WAN: Convert Zilog-based drivers to generic HDLC 



Signed-off-by: default avatarKrzysztof Hałasa <khc@pm.waw.pl>
parent aca25753

drivers/net/wan/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ if WAN 
# There is no way to detect a comtrol sv11 - force it modular for now.

config HOSTESS_SV11

	tristate "Comtrol Hostess SV-11 support"

	depends on ISA && m && ISA_DMA_API && INET

	depends on ISA && m && ISA_DMA_API && INET && HDLC

	help

	  Driver for Comtrol Hostess SV-11 network card which

	  operates on low speed synchronous serial links at up to
@@ -88,7 +88,7 @@ config LANMEDIA 
# There is no way to detect a Sealevel board. Force it modular

config SEALEVEL_4021

	tristate "Sealevel Systems 4021 support"

	depends on ISA && m && ISA_DMA_API && INET

	depends on ISA && m && ISA_DMA_API && INET && HDLC

	help

	  This is a driver for the Sealevel Systems ACB 56 serial I/O adapter.

drivers/net/wan/Makefile

+3 −3
Original line number Diff line number Diff line
@@ -21,8 +21,8 @@ pc300-y := pc300_drv.o 
pc300-$(CONFIG_PC300_MLPPP)	+= pc300_tty.o

pc300-objs			:= $(pc300-y)



obj-$(CONFIG_HOSTESS_SV11)	+= z85230.o	syncppp.o	hostess_sv11.o

obj-$(CONFIG_SEALEVEL_4021)	+= z85230.o	syncppp.o	sealevel.o

obj-$(CONFIG_HOSTESS_SV11)	+= z85230.o	hostess_sv11.o

obj-$(CONFIG_SEALEVEL_4021)	+= z85230.o	sealevel.o

obj-$(CONFIG_COSA)		+= cosa.o

obj-$(CONFIG_FARSYNC)		+= farsync.o

obj-$(CONFIG_DSCC4)             += dscc4.o

drivers/net/wan/hostess_sv11.c

+154 −228
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 
 *	touching control registers.

 *

 *	Port B isnt wired (why - beats me)

 *

 *	Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>

 */



#include <linux/module.h>
@@ -26,6 +28,7 @@ 
#include <linux/netdevice.h>

#include <linux/if_arp.h>

#include <linux/delay.h>

#include <linux/hdlc.h>

#include <linux/ioport.h>

#include <net/arp.h>
@@ -33,24 +36,21 @@ 
#include <asm/io.h>

#include <asm/dma.h>

#include <asm/byteorder.h>

#include <net/syncppp.h>

#include "z85230.h"



static int dma;



struct sv11_device

{

	void *if_ptr;	/* General purpose pointer (used by SPPP) */

	struct z8530_dev sync;

	struct ppp_device netdev;

};



/*

 *	Network driver support routines

 */



static inline struct z8530_dev* dev_to_sv(struct net_device *dev)

{

	return (struct z8530_dev *)dev_to_hdlc(dev)->priv;

}



/*

 *	Frame receive. Simple for our card as we do sync ppp and there

 *	Frame receive. Simple for our card as we do HDLC and there

 *	is no funny garbage involved

 */
@@ -58,7 +58,7 @@ static void hostess_input(struct z8530_channel *c, struct sk_buff *skb) 
{

	/* Drop the CRC - it's not a good idea to try and negotiate it ;) */

	skb_trim(skb, skb->len - 2);

	skb->protocol=__constant_htons(ETH_P_WAN_PPP);

	skb->protocol = hdlc_type_trans(skb, c->netdevice);

	skb_reset_mac_header(skb);

	skb->dev = c->netdevice;

	/*
@@ -75,48 +75,43 @@ static void hostess_input(struct z8530_channel *c, struct sk_buff *skb) 


static int hostess_open(struct net_device *d)

{

	struct sv11_device *sv11=d->ml_priv;

	struct z8530_dev *sv11 = dev_to_sv(d);

	int err = -1;



	/*

	 *	Link layer up

	 */

	switch(dma)

	{

	switch (dma) {

		case 0:

			err=z8530_sync_open(d, &sv11->sync.chanA);

			err = z8530_sync_open(d, &sv11->chanA);

			break;

		case 1:

			err=z8530_sync_dma_open(d, &sv11->sync.chanA);

			err = z8530_sync_dma_open(d, &sv11->chanA);

			break;

		case 2:

			err=z8530_sync_txdma_open(d, &sv11->sync.chanA);

			err = z8530_sync_txdma_open(d, &sv11->chanA);

			break;

	}



	if (err)

		return err;

	/*

	 *	Begin PPP

	 */

	err=sppp_open(d);

	if(err)

	{

		switch(dma)

		{



	err = hdlc_open(d);

	if (err) {

		switch (dma) {

			case 0:

				z8530_sync_close(d, &sv11->sync.chanA);

				z8530_sync_close(d, &sv11->chanA);

				break;

			case 1:

				z8530_sync_dma_close(d, &sv11->sync.chanA);

				z8530_sync_dma_close(d, &sv11->chanA);

				break;

			case 2:

				z8530_sync_txdma_close(d, &sv11->sync.chanA);

				z8530_sync_txdma_close(d, &sv11->chanA);

				break;

		}

		return err;

	}

	sv11->sync.chanA.rx_function=hostess_input;

	sv11->chanA.rx_function = hostess_input;



	/*

	 *	Go go go
@@ -128,30 +123,24 @@ static int hostess_open(struct net_device *d) 


static int hostess_close(struct net_device *d)

{

	struct sv11_device *sv11=d->ml_priv;

	struct z8530_dev *sv11 = dev_to_sv(d);

	/*

	 *	Discard new frames

	 */

	sv11->sync.chanA.rx_function=z8530_null_rx;

	/*

	 *	PPP off

	 */

	sppp_close(d);

	/*

	 *	Link layer down

	 */

	sv11->chanA.rx_function = z8530_null_rx;



	hdlc_close(d);

	netif_stop_queue(d);



	switch(dma)

	{

	switch (dma) {

		case 0:

			z8530_sync_close(d, &sv11->sync.chanA);

			z8530_sync_close(d, &sv11->chanA);

			break;

		case 1:

			z8530_sync_dma_close(d, &sv11->sync.chanA);

			z8530_sync_dma_close(d, &sv11->chanA);

			break;

		case 2:

			z8530_sync_txdma_close(d, &sv11->sync.chanA);

			z8530_sync_txdma_close(d, &sv11->chanA);

			break;

	}

	return 0;
@@ -159,137 +148,93 @@ static int hostess_close(struct net_device *d) 


static int hostess_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)

{

	/* struct sv11_device *sv11=d->ml_priv;

	   z8530_ioctl(d,&sv11->sync.chanA,ifr,cmd) */

	return sppp_do_ioctl(d, ifr,cmd);

}



static struct net_device_stats *hostess_get_stats(struct net_device *d)

{

	struct sv11_device *sv11=d->ml_priv;

	if(sv11)

		return z8530_get_stats(&sv11->sync.chanA);

	else

		return NULL;

	/* struct z8530_dev *sv11=dev_to_sv(d);

	   z8530_ioctl(d,&sv11->chanA,ifr,cmd) */

	return hdlc_ioctl(d, ifr, cmd);

}



/*

 *	Passed PPP frames, fire them downwind.

 *	Passed network frames, fire them downwind.

 */



static int hostess_queue_xmit(struct sk_buff *skb, struct net_device *d)

{

	struct sv11_device *sv11=d->ml_priv;

	return z8530_queue_xmit(&sv11->sync.chanA, skb);

}



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;

	return z8530_queue_xmit(&dev_to_sv(d)->chanA, skb);

}



static int hostess_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)

static int hostess_attach(struct net_device *dev, unsigned short encoding,

			  unsigned short parity)

{

	if (p->tbl->family == AF_INET) {

		p->neigh_setup = hostess_neigh_setup;

		p->ucast_probes = 0;

		p->mcast_probes = 0;

	}

	if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)

		return 0;

}



static void sv11_setup(struct net_device *dev)

{	

	dev->open = hostess_open;

	dev->stop = hostess_close;

	dev->hard_start_xmit = hostess_queue_xmit;

	dev->get_stats = hostess_get_stats;

	dev->do_ioctl = hostess_ioctl;

	dev->neigh_setup = hostess_neigh_setup_dev;

	return -EINVAL;

}



/*

 *	Description block for a Comtrol Hostess SV11 card

 */



static struct sv11_device *sv11_init(int iobase, int irq)

static struct z8530_dev *sv11_init(int iobase, int irq)

{

	struct z8530_dev *dev;

	struct sv11_device *sv;

	

	struct z8530_dev *sv;

	struct net_device *netdev;

	/*

	 *	Get the needed I/O space

	 */



	if(!request_region(iobase, 8, "Comtrol SV11"))

	{	

		printk(KERN_WARNING "hostess: I/O 0x%X already in use.\n", iobase);

	if (!request_region(iobase, 8, "Comtrol SV11")) {

		printk(KERN_WARNING "hostess: I/O 0x%X already in use.\n",

		       iobase);

		return NULL;

	}



	sv = kzalloc(sizeof(struct sv11_device), GFP_KERNEL);

	sv = kzalloc(sizeof(struct z8530_dev), GFP_KERNEL);

	if (!sv)

		goto fail3;

			

	sv->if_ptr=&sv->netdev;

	

	sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup);

	if(!sv->netdev.dev)

		goto fail2;



	dev=&sv->sync;

		goto err_kzalloc;



	/*

	 *	Stuff in the I/O addressing

	 */



	dev->active = 0;

	sv->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;

	sv->chanA.ctrlio = iobase + 1;

	sv->chanA.dataio = iobase + 3;

	sv->chanB.ctrlio = -1;

	sv->chanB.dataio = -1;

	sv->chanA.irqs = &z8530_nop;

	sv->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, IRQF_DISABLED, "Hostess SV11", dev)<0)

	{

	if (request_irq(irq, &z8530_interrupt, IRQF_DISABLED,

			"Hostess SV11", sv) < 0) {

		printk(KERN_WARNING "hostess: IRQ %d already in use.\n", irq);

		goto fail1;

		goto err_irq;

	}



	dev->irq=irq;

	dev->chanA.private=sv;

	dev->chanA.netdevice=sv->netdev.dev;

	dev->chanA.dev=dev;

	dev->chanB.dev=dev;

	sv->irq = irq;

	sv->chanA.private = sv;

	sv->chanA.dev = sv;

	sv->chanB.dev = sv;



	if(dma)

	{

	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;

		sv->chanA.txdma = 3;

		sv->chanA.rxdma = 1;

		outb(0x03 | 0x08, iobase + 4);		/* DMA on */

		if(request_dma(dev->chanA.txdma, "Hostess SV/11 (TX)")!=0)

			goto fail;

		if (request_dma(sv->chanA.txdma, "Hostess SV/11 (TX)"))

			goto err_txdma;



		if (dma == 1)

		{

			if(request_dma(dev->chanA.rxdma, "Hostess SV/11 (RX)")!=0)

				goto dmafail;

		}

			if (request_dma(sv->chanA.rxdma, "Hostess SV/11 (RX)"))

				goto err_rxdma;

	}



	/* Kill our private IRQ line the hostess can end up chattering
@@ -300,89 +245,75 @@ static struct sv11_device *sv11_init(int iobase, int irq) 
	 *	Begin normal initialise

	 */



	if(z8530_init(dev)!=0)

	{

	if (z8530_init(sv)) {

		printk(KERN_ERR "Z8530 series device not found.\n");

		enable_irq(irq);

		goto dmafail2;

		goto free_dma;

	}

	z8530_channel_load(&dev->chanB, z8530_dead_port);

	if(dev->type==Z85C30)

		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);

	z8530_channel_load(&sv->chanB, z8530_dead_port);

	if (sv->type == Z85C30)

		z8530_channel_load(&sv->chanA, z8530_hdlc_kilostream);

	else

		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);

		z8530_channel_load(&sv->chanA, z8530_hdlc_kilostream_85230);



	enable_irq(irq);





	/*

	 *	Now we can take the IRQ

	 */

	if(dev_alloc_name(dev->chanA.netdevice,"hdlc%d")>=0)

	{

		struct net_device *d=dev->chanA.netdevice;



		/* 

		 *	Initialise the PPP components

		 */

		d->ml_priv = sv;

		sppp_attach(&sv->netdev);



		/*

		 *	Local fields

		 */	

		

		d->base_addr = iobase;

		d->irq = irq;

		

		if(register_netdev(d))

		{

			printk(KERN_ERR "%s: unable to register device.\n",

				d->name);

			sppp_detach(d);

			goto dmafail2;

	sv->chanA.netdevice = netdev = alloc_hdlcdev(sv);

	if (!netdev)

		goto free_dma;



	dev_to_hdlc(netdev)->attach = hostess_attach;

	dev_to_hdlc(netdev)->xmit = hostess_queue_xmit;

	netdev->open = hostess_open;

	netdev->stop = hostess_close;

	netdev->do_ioctl = hostess_ioctl;

	netdev->base_addr = iobase;

	netdev->irq = irq;



	if (register_hdlc_device(netdev)) {

		printk(KERN_ERR "hostess: unable to register HDLC device.\n");

		free_netdev(netdev);

		goto free_dma;

	}



		z8530_describe(dev, "I/O", iobase);

		dev->active=1;

	z8530_describe(sv, "I/O", iobase);

	sv->active = 1;

	return sv;

	}

dmafail2:



free_dma:

	if (dma == 1)

		free_dma(dev->chanA.rxdma);

dmafail:

		free_dma(sv->chanA.rxdma);

err_rxdma:

	if (dma)

		free_dma(dev->chanA.txdma);

fail:

	free_irq(irq, dev);

fail1:

	free_netdev(sv->netdev.dev);

fail2:

		free_dma(sv->chanA.txdma);

err_txdma:

	free_irq(irq, sv);

err_irq:

	kfree(sv);

fail3:

err_kzalloc:

	release_region(iobase, 8);

	return NULL;

}



static void sv11_shutdown(struct sv11_device *dev)

{

	sppp_detach(dev->netdev.dev);

	unregister_netdev(dev->netdev.dev);

	z8530_shutdown(&dev->sync);

	free_irq(dev->sync.irq, dev);

	if(dma)

static void sv11_shutdown(struct z8530_dev *dev)

{

	unregister_hdlc_device(dev->chanA.netdevice);

	z8530_shutdown(dev);

	free_irq(dev->irq, dev);

	if (dma) {

		if (dma == 1)

			free_dma(dev->sync.chanA.rxdma);

		free_dma(dev->sync.chanA.txdma);

			free_dma(dev->chanA.rxdma);

		free_dma(dev->chanA.txdma);

	}

	release_region(dev->sync.chanA.ctrlio-1, 8);

	free_netdev(dev->netdev.dev);

	release_region(dev->chanA.ctrlio - 1, 8);

	free_netdev(dev->chanA.netdevice);

	kfree(dev);

}



#ifdef MODULE



static int io = 0x200;

static int irq = 9;
@@ -397,12 +328,10 @@ MODULE_AUTHOR("Alan Cox"); 
MODULE_LICENSE("GPL");

MODULE_DESCRIPTION("Modular driver for the Comtrol Hostess SV11");



static struct sv11_device *sv11_unit;

static struct z8530_dev *sv11_unit;



int init_module(void)

{

	printk(KERN_INFO "SV-11 Z85230 Synchronous Driver v 0.03.\n");

	printk(KERN_INFO "(c) Copyright 2001, Red Hat Inc.\n");	

	if ((sv11_unit = sv11_init(io, irq)) == NULL)

		return -ENODEV;

	return 0;
@@ -413,6 +342,3 @@ void cleanup_module(void) 
	if (sv11_unit)

		sv11_shutdown(sv11_unit);

}
 


#endif

drivers/net/wan/sealevel.c

+142 −219
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
 *

 *	(c) Copyright 1999, 2001 Alan Cox

 *	(c) Copyright 2001 Red Hat Inc.

 *	Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>

 *

 */
@@ -19,6 +20,7 @@ 
#include <linux/netdevice.h>

#include <linux/if_arp.h>

#include <linux/delay.h>

#include <linux/hdlc.h>

#include <linux/ioport.h>

#include <linux/init.h>

#include <net/arp.h>
@@ -27,22 +29,19 @@ 
#include <asm/io.h>

#include <asm/dma.h>

#include <asm/byteorder.h>

#include <net/syncppp.h>

#include "z85230.h"





struct slvl_device

{

	void *if_ptr;	/* General purpose pointer (used by SPPP) */

	struct z8530_channel *chan;

	struct ppp_device pppdev;

	int channel;

};





struct slvl_board

{

	struct slvl_device *dev[2];

	struct slvl_device dev[2];

	struct z8530_dev board;

	int iobase;

};
@@ -51,8 +50,13 @@ struct slvl_board 
 *	Network driver support routines

 */



static inline struct slvl_device* dev_to_chan(struct net_device *dev)

{

	return (struct slvl_device *)dev_to_hdlc(dev)->priv;

}



/*

 *	Frame receive. Simple for our card as we do sync ppp and there

 *	Frame receive. Simple for our card as we do HDLC and there

 *	is no funny garbage involved

 */
@@ -60,13 +64,9 @@ static void sealevel_input(struct z8530_channel *c, struct sk_buff *skb) 
{

	/* Drop the CRC - it's not a good idea to try and negotiate it ;) */

	skb_trim(skb, skb->len - 2);

	skb->protocol=htons(ETH_P_WAN_PPP);

	skb->protocol = hdlc_type_trans(skb, c->netdevice);

	skb_reset_mac_header(skb);

	skb->dev = c->netdevice;

	/*

	 *	Send it to the PPP layer. We don't have time to process

	 *	it right now.

	 */

	netif_rx(skb);

	c->netdevice->last_rx = jiffies;

}
@@ -77,7 +77,7 @@ static void sealevel_input(struct z8530_channel *c, struct sk_buff *skb) 


static int sealevel_open(struct net_device *d)

{

	struct slvl_device *slvl=d->priv;

	struct slvl_device *slvl = dev_to_chan(d);

	int err = -1;

	int unit = slvl->channel;
@@ -97,14 +97,10 @@ static int sealevel_open(struct net_device *d) 


	if (err)

		return err;

	/*

	 *	Begin PPP

	 */

	err=sppp_open(d);

	if(err)

	{

		switch(unit)

		{



	err = hdlc_open(d);

	if (err) {

		switch (unit) {

			case 0:

				z8530_sync_dma_close(d, slvl->chan);

				break;
@@ -126,7 +122,7 @@ static int sealevel_open(struct net_device *d) 


static int sealevel_close(struct net_device *d)

{

	struct slvl_device *slvl=d->priv;

	struct slvl_device *slvl = dev_to_chan(d);

	int unit = slvl->channel;



	/*
@@ -135,14 +131,7 @@ static int sealevel_close(struct net_device *d) 


	slvl->chan->rx_function = z8530_null_rx;



	/*

	 *	PPP off

	 */

	sppp_close(d);

	/*

	 *	Link layer down

	 */



	hdlc_close(d);

	netif_stop_queue(d);



	switch (unit)
@@ -159,95 +148,50 @@ static int sealevel_close(struct net_device *d) 


static int sealevel_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)

{

	/* struct slvl_device *slvl=d->priv;

	/* struct slvl_device *slvl=dev_to_chan(d);

	   z8530_ioctl(d,&slvl->sync.chanA,ifr,cmd) */

	return sppp_do_ioctl(d, ifr,cmd);

}



static struct net_device_stats *sealevel_get_stats(struct net_device *d)

{

	struct slvl_device *slvl=d->priv;

	if(slvl)

		return z8530_get_stats(slvl->chan);

	else

		return NULL;

	return hdlc_ioctl(d, ifr, cmd);

}



/*

 *	Passed PPP frames, fire them downwind.

 *	Passed network 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);

}



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;

	return z8530_queue_xmit(dev_to_chan(d)->chan, skb);

}



static int sealevel_attach(struct net_device *dev)

static int sealevel_attach(struct net_device *dev, unsigned short encoding,

			   unsigned short parity)

{

	struct slvl_device *sv = dev->priv;

	sppp_attach(&sv->pppdev);

	if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)

		return 0;

	return -EINVAL;

}



static void sealevel_detach(struct net_device *dev)

static int slvl_setup(struct slvl_device *sv, int iobase, int irq)

{

	sppp_detach(dev);

}

		

static void slvl_setup(struct net_device *d)

{

	d->open = sealevel_open;

	d->stop = sealevel_close;

	d->init = sealevel_attach;

	d->uninit = sealevel_detach;

	d->hard_start_xmit = sealevel_queue_xmit;

	d->get_stats = sealevel_get_stats;

	d->set_multicast_list = NULL;

	d->do_ioctl = sealevel_ioctl;

	d->neigh_setup = sealevel_neigh_setup_dev;

	d->set_mac_address = NULL;

	struct net_device *dev = alloc_hdlcdev(sv);

	if (!dev)

		return -1;



	dev_to_hdlc(dev)->attach = sealevel_attach;

	dev_to_hdlc(dev)->xmit = sealevel_queue_xmit;

	dev->open = sealevel_open;

	dev->stop = sealevel_close;

	dev->do_ioctl = sealevel_ioctl;

	dev->base_addr = iobase;

	dev->irq = irq;



	if (register_hdlc_device(dev)) {

		printk(KERN_ERR "sealevel: unable to register HDLC device\n");

		free_netdev(dev);

		return -1;

	}



static inline struct slvl_device *slvl_alloc(int iobase, int irq)

{

	struct net_device *d;

	struct slvl_device *sv;



	d = alloc_netdev(sizeof(struct slvl_device), "hdlc%d",

			 slvl_setup);



	if (!d) 

		return NULL;



	sv = d->priv;

	d->ml_priv = sv;

	sv->if_ptr = &sv->pppdev;

	sv->pppdev.dev = d;

	d->base_addr = iobase;

	d->irq = irq;

		

	return sv;

	sv->chan->netdevice = dev;

	return 0;

}
@@ -265,27 +209,21 @@ static __init struct slvl_board *slvl_init(int iobase, int irq, 
	 *	Get the needed I/O space

	 */



	if(!request_region(iobase, 8, "Sealevel 4021")) 

	{	

		printk(KERN_WARNING "sealevel: I/O 0x%X already in use.\n", iobase);

	if (!request_region(iobase, 8, "Sealevel 4021")) {

		printk(KERN_WARNING "sealevel: I/O 0x%X already in use.\n",

		       iobase);

		return NULL;

	}



	b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL);

	if (!b)

		goto fail3;

		goto err_kzalloc;



	if (!(b->dev[0]= slvl_alloc(iobase, irq)))

		goto fail2;

	b->dev[0].chan = &b->board.chanA;

	b->dev[0].channel = 0;



	b->dev[0]->chan = &b->board.chanA;	

	b->dev[0]->channel = 0;

	

	if (!(b->dev[1] = slvl_alloc(iobase, irq)))

		goto fail1_0;



	b->dev[1]->chan = &b->board.chanB;

	b->dev[1]->channel = 1;

	b->dev[1].chan = &b->board.chanB;

	b->dev[1].channel = 1;



	dev = &b->board;
@@ -322,27 +260,25 @@ static __init struct slvl_board *slvl_init(int iobase, int irq, 
	/* 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, IRQF_DISABLED, "SeaLevel", dev)<0)

	{

	if (request_irq(irq, &z8530_interrupt, IRQF_DISABLED,

			"SeaLevel", dev) < 0) {

		printk(KERN_WARNING "sealevel: IRQ %d already in use.\n", irq);

		goto fail1_1;

		goto err_request_irq;

	}



	dev->irq = irq;

	dev->chanA.private = &b->dev[0];

	dev->chanB.private = &b->dev[1];

	dev->chanA.netdevice=b->dev[0]->pppdev.dev;

	dev->chanB.netdevice=b->dev[1]->pppdev.dev;

	dev->chanA.dev = dev;

	dev->chanB.dev = dev;



	dev->chanA.txdma = 3;

	dev->chanA.rxdma = 1;

	if(request_dma(dev->chanA.txdma, "SeaLevel (TX)")!=0)

		goto fail;

	if (request_dma(dev->chanA.txdma, "SeaLevel (TX)"))

		goto err_dma_tx;



	if(request_dma(dev->chanA.rxdma, "SeaLevel (RX)")!=0)

		goto dmafail;

	if (request_dma(dev->chanA.rxdma, "SeaLevel (RX)"))

		goto err_dma_rx;



	disable_irq(irq);
@@ -350,19 +286,15 @@ static __init struct slvl_board *slvl_init(int iobase, int irq, 
	 *	Begin normal initialise

	 */



	if(z8530_init(dev)!=0)

	{

	if (z8530_init(dev) != 0) {

		printk(KERN_ERR "Z8530 series device not found.\n");

		enable_irq(irq);

		goto dmafail2;

		goto free_hw;

	}

	if(dev->type==Z85C30)

	{

	if (dev->type == Z85C30) {

		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);

		z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream);

	}

	else

	{

	} else {

		z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);

		z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream_85230);

	}
@@ -373,32 +305,27 @@ static __init struct slvl_board *slvl_init(int iobase, int irq, 


	enable_irq(irq);



	if (register_netdev(b->dev[0]->pppdev.dev)) 

		goto dmafail2;

		

	if (register_netdev(b->dev[1]->pppdev.dev)) 

		goto fail_unit;

	if (slvl_setup(&b->dev[0], iobase, irq))

		goto free_hw;

	if (slvl_setup(&b->dev[1], iobase, irq))

		goto free_netdev0;



	z8530_describe(dev, "I/O", iobase);

	dev->active = 1;

	return b;



fail_unit:

	unregister_netdev(b->dev[0]->pppdev.dev);

	

dmafail2:

free_netdev0:

	unregister_hdlc_device(b->dev[0].chan->netdevice);

	free_netdev(b->dev[0].chan->netdevice);

free_hw:

	free_dma(dev->chanA.rxdma);

dmafail:

err_dma_rx:

	free_dma(dev->chanA.txdma);

fail:

err_dma_tx:

	free_irq(irq, dev);

fail1_1:

	free_netdev(b->dev[1]->pppdev.dev);

fail1_0:

	free_netdev(b->dev[0]->pppdev.dev);

fail2:

err_request_irq:

	kfree(b);

fail3:

err_kzalloc:

	release_region(iobase, 8);

	return NULL;

}
@@ -411,8 +338,8 @@ static void __exit slvl_shutdown(struct slvl_board *b) 


	for (u = 0; u < 2; u++)

	{

		struct net_device *d = b->dev[u]->pppdev.dev;

		unregister_netdev(d);

		struct net_device *d = b->dev[u].chan->netdevice;

		unregister_hdlc_device(d);

		free_netdev(d);

	}
@@ -451,10 +378,6 @@ static struct slvl_board *slvl_unit; 


static int __init slvl_init_module(void)

{

#ifdef MODULE

	printk(KERN_INFO "SeaLevel Z85230 Synchronous Driver v 0.02.\n");

	printk(KERN_INFO "(c) Copyright 1998, Building Number Three Ltd.\n");

#endif

	slvl_unit = slvl_init(io, irq, txdma, rxdma, slow);



	return slvl_unit ? 0 : -ENODEV;

drivers/net/wan/z85230.c

+77 −116

File changed.

Preview size limit exceeded, changes collapsed.