Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

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
+