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!
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
new file mode 100644
index 0000000..7db1d1d
--- /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
+