1 files changed, 420 insertions, 0 deletions
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
new file mode 100644
index 00000000000..7db1d1d0bb3
--- /dev/null
+++ b/drivers/net/wan/hostess_sv11.c
@@ -0,0 +1,420 @@
+/*
+ *	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 <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
+ */
+
+/*
+ *	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 - 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->mac.raw=skb->data;
+	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;
+}
+ 
+/*
+ *	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
+	 */
+
+	netif_start_queue(d);
+	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
+	 */
+	netif_stop_queue(d);
+		
+	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 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 net_device_stats *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);
+}
+
+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;
+}
+
+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;
+}
+
+/*
+ *	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;
+	
+	/*
+	 *	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);
+		return NULL;
+	}
+	
+	sv=(struct sv11_device *)kmalloc(sizeof(struct sv11_device), GFP_KERNEL);
+	if(!sv)
+		goto fail3;
+			
+	memset(sv, 0, sizeof(*sv));
+	sv->if_ptr=&sv->netdev;
+	
+	sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup);
+	if(!sv->netdev.dev)
+		goto fail2;
+
+	SET_MODULE_OWNER(sv->netdev.dev);
+
+	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 SV11", dev)<0)
+	{
+		printk(KERN_WARNING "hostess: IRQ %d already in use.\n", irq);
+		goto fail1;
+	}
+	
+	dev->irq=irq;
+	dev->chanA.private=sv;
+	dev->chanA.netdevice=sv->netdev.dev;
+	dev->chanA.dev=dev;
+	dev->chanB.dev=dev;
+	
+	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;
+		}
+	}
+
+	/* 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)
+	{
+		printk(KERN_ERR "Z8530 series device not found.\n");
+		enable_irq(irq);
+		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);
+	
+	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
+		 */
+		sppp_attach(&sv->netdev);
+		
+		/*
+		 *	Local fields
+		 */	
+		
+		d->base_addr = iobase;
+		d->irq = irq;
+		d->priv = sv;
+		
+		if(register_netdev(d))
+		{
+			printk(KERN_ERR "%s: unable to register device.\n",
+				d->name);
+			sppp_detach(d);
+			goto dmafail2;
+		}
+
+		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);
+fail1:
+	free_netdev(sv->netdev.dev);
+fail2:
+	kfree(sv);
+fail3:
+	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)
+	{
+		if(dma==1)
+			free_dma(dev->sync.chanA.rxdma);
+		free_dma(dev->sync.chanA.txdma);
+	}
+	release_region(dev->sync.chanA.ctrlio-1, 8);
+	free_netdev(dev->netdev.dev);
+	kfree(dev);
+}
+
+#ifdef MODULE
+
+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");
+module_param(dma, int, 0);
+MODULE_PARM_DESC(dma, "Set this to 1 to use DMA1/DMA3 for TX/RX");
+module_param(irq, int, 0);
+MODULE_PARM_DESC(irq, "The interrupt line setting for the Comtrol Hostess SV11 card");
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Modular driver for the Comtrol Hostess SV11");
+
+static struct sv11_device *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;
+}
+
+void cleanup_module(void)
+{
+	if(sv11_unit)
+		sv11_shutdown(sv11_unit);
+}
+
+#endif
+