WAN: Convert Zilog-based drivers to generic HDLC

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>

1 files changed, 154 insertions, 228 deletions

diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
index f3065d3..e299313 100644
--- a/drivers/net/wan/hostess_sv11.c
+++ b/drivers/net/wan/hostess_sv11.c
@@ -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>
 
@@ -33,34 +36,31 @@
 #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
  */
- 
+
 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_trim(skb, skb->len - 2);
+	skb->protocol = hdlc_type_trans(skb, c->netdevice);
 	skb_reset_mac_header(skb);
-	skb->dev=c->netdevice;
+	skb->dev = c->netdevice;
 	/*
 	 *	Send it to the PPP layer. We don't have time to process
 	 *	it right now.
@@ -68,56 +68,51 @@ static void hostess_input(struct z8530_channel *c, struct sk_buff *skb)
 	netif_rx(skb);
 	c->netdevice->last_rx = jiffies;
 }
- 
+
 /*
  *	We've been placed in the UP state
- */ 
- 
+ */
+
 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)
+
+	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;
@@ -159,232 +148,174 @@ 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);
+	return z8530_queue_xmit(&dev_to_sv(d)->chanA, skb);
 }
 
-static int hostess_neigh_setup(struct neighbour *n)
+static int hostess_attach(struct net_device *dev, unsigned short encoding,
+			  unsigned short parity)
 {
-	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;
-}
-
-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;
+	if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
+		return 0;
+	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);
-	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;
-	
+
+	sv = kzalloc(sizeof(struct z8530_dev), GFP_KERNEL);
+	if (!sv)
+		goto err_kzalloc;
+
 	/*
 	 *	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 */
-	
+
+	sv->active = 0;
+
+	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;
-	
-	if(dma)
-	{
+
+	sv->irq = irq;
+	sv->chanA.private = sv;
+	sv->chanA.dev = sv;
+	sv->chanB.dev = sv;
+
+	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;
-		}
+		sv->chanA.txdma = 3;
+		sv->chanA.rxdma = 1;
+		outb(0x03 | 0x08, iobase + 4);		/* DMA on */
+		if (request_dma(sv->chanA.txdma, "Hostess SV/11 (TX)"))
+			goto err_txdma;
+
+		if (dma == 1)
+			if (request_dma(sv->chanA.rxdma, "Hostess SV/11 (RX)"))
+				goto err_rxdma;
 	}
 
 	/* Kill our private IRQ line the hostess can end up chattering
 	   until the configuration is set */
 	disable_irq(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;
 
-		z8530_describe(dev, "I/O", iobase);
-		dev->active=1;
-		return sv;	
+	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;
 	}
-dmafail2:
-	if(dma==1)
-		free_dma(dev->chanA.rxdma);
-dmafail:
-	if(dma)
-		free_dma(dev->chanA.txdma);
-fail:
-	free_irq(irq, dev);
-fail1:
-	free_netdev(sv->netdev.dev);
-fail2:
+
+	z8530_describe(sv, "I/O", iobase);
+	sv->active = 1;
+	return sv;
+
+free_dma:
+	if (dma == 1)
+		free_dma(sv->chanA.rxdma);
+err_rxdma:
+	if (dma)
+		free_dma(sv->chanA.txdma);
+err_txdma:
+	free_irq(irq, sv);
+err_irq:
 	kfree(sv);
-fail3:
-	release_region(iobase,8);
+err_kzalloc:
+	release_region(iobase, 8);
 	return NULL;
 }
 
-static void sv11_shutdown(struct sv11_device *dev)
+static void sv11_shutdown(struct z8530_dev *dev)
 {
-	sppp_detach(dev->netdev.dev);
-	unregister_netdev(dev->netdev.dev);
-	z8530_shutdown(&dev->sync);
-	free_irq(dev->sync.irq, dev);
-	if(dma)
-	{
-		if(dma==1)
-			free_dma(dev->sync.chanA.rxdma);
-		free_dma(dev->sync.chanA.txdma);
+	unregister_hdlc_device(dev->chanA.netdevice);
+	z8530_shutdown(dev);
+	free_irq(dev->irq, dev);
+	if (dma) {
+		if (dma == 1)
+			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;
+static int io = 0x200;
+static int irq = 9;
 
 module_param(io, int, 0);
 MODULE_PARM_DESC(io, "The I/O base of the Comtrol Hostess SV11 card");
@@ -397,22 +328,17 @@ 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)
+	if ((sv11_unit = sv11_init(io, irq)) == NULL)
 		return -ENODEV;
 	return 0;
 }
 
 void cleanup_module(void)
 {
-	if(sv11_unit)
+	if (sv11_unit)
 		sv11_shutdown(sv11_unit);
 }
-
-#endif
-