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/sealevel.c b/drivers/net/wan/sealevel.c
new file mode 100644
index 0000000..5380ddf
--- /dev/null
+++ b/drivers/net/wan/sealevel.c
@@ -0,0 +1,469 @@
+/*
+ * Sealevel Systems 4021 driver.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * (c) Copyright 1999, 2001 Alan Cox
+ * (c) Copyright 2001 Red Hat Inc.
+ *
+ */
+
+#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 <linux/init.h>
+#include <net/arp.h>
+
+#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 z8530_dev board;
+ int iobase;
+};
+
+/*
+ * Network driver support routines
+ */
+
+/*
+ * Frame receive. Simple for our card as we do sync ppp and there
+ * is no funny garbage involved
+ */
+
+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->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 sealevel_open(struct net_device *d)
+{
+ struct slvl_device *slvl=d->priv;
+ int err = -1;
+ int unit = slvl->channel;
+
+ /*
+ * Link layer up.
+ */
+
+ switch(unit)
+ {
+ case 0:
+ err=z8530_sync_dma_open(d, slvl->chan);
+ break;
+ case 1:
+ err=z8530_sync_open(d, slvl->chan);
+ break;
+ }
+
+ if(err)
+ return err;
+ /*
+ * Begin PPP
+ */
+ err=sppp_open(d);
+ if(err)
+ {
+ switch(unit)
+ {
+ case 0:
+ z8530_sync_dma_close(d, slvl->chan);
+ break;
+ case 1:
+ z8530_sync_close(d, slvl->chan);
+ break;
+ }
+ return err;
+ }
+
+ slvl->chan->rx_function=sealevel_input;
+
+ /*
+ * Go go go
+ */
+ netif_start_queue(d);
+ return 0;
+}
+
+static int sealevel_close(struct net_device *d)
+{
+ struct slvl_device *slvl=d->priv;
+ int unit = slvl->channel;
+
+ /*
+ * Discard new frames
+ */
+
+ slvl->chan->rx_function=z8530_null_rx;
+
+ /*
+ * PPP off
+ */
+ sppp_close(d);
+ /*
+ * Link layer down
+ */
+
+ netif_stop_queue(d);
+
+ switch(unit)
+ {
+ case 0:
+ z8530_sync_dma_close(d, slvl->chan);
+ break;
+ case 1:
+ z8530_sync_close(d, slvl->chan);
+ break;
+ }
+ return 0;
+}
+
+static int sealevel_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)
+{
+ /* struct slvl_device *slvl=d->priv;
+ 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;
+}
+
+/*
+ * Passed PPP 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;
+}
+
+static int sealevel_attach(struct net_device *dev)
+{
+ struct slvl_device *sv = dev->priv;
+ sppp_attach(&sv->pppdev);
+ return 0;
+}
+
+static void sealevel_detach(struct net_device *dev)
+{
+ 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;
+
+}
+
+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;
+ sv->if_ptr = &sv->pppdev;
+ sv->pppdev.dev = d;
+ d->base_addr = iobase;
+ d->irq = irq;
+
+ return sv;
+}
+
+
+/*
+ * Allocate and setup Sealevel board.
+ */
+
+static __init struct slvl_board *slvl_init(int iobase, int irq,
+ int txdma, int rxdma, int slow)
+{
+ struct z8530_dev *dev;
+ struct slvl_board *b;
+
+ /*
+ * 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);
+ return NULL;
+ }
+
+ b = kmalloc(sizeof(struct slvl_board), GFP_KERNEL);
+ if(!b)
+ goto fail3;
+
+ memset(b, 0, sizeof(*b));
+ if (!(b->dev[0]= slvl_alloc(iobase, irq)))
+ goto fail2;
+
+ 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;
+
+ dev = &b->board;
+
+ /*
+ * Stuff in the I/O addressing
+ */
+
+ dev->active = 0;
+
+ b->iobase = iobase;
+
+ /*
+ * Select 8530 delays for the old board
+ */
+
+ if(slow)
+ iobase |= Z8530_PORT_SLEEP;
+
+ dev->chanA.ctrlio=iobase+1;
+ dev->chanA.dataio=iobase;
+ dev->chanB.ctrlio=iobase+3;
+ dev->chanB.dataio=iobase+2;
+
+ dev->chanA.irqs=&z8530_nop;
+ dev->chanB.irqs=&z8530_nop;
+
+ /*
+ * Assert DTR enable DMA
+ */
+
+ outb(3|(1<<7), b->iobase+4);
+
+
+ /* 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, "SeaLevel", dev)<0)
+ {
+ printk(KERN_WARNING "sealevel: IRQ %d already in use.\n", irq);
+ goto fail1_1;
+ }
+
+ 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.rxdma, "SeaLevel (RX)")!=0)
+ goto dmafail;
+
+ 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;
+ }
+ if(dev->type==Z85C30)
+ {
+ z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
+ z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream);
+ }
+ else
+ {
+ z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
+ z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream_85230);
+ }
+
+ /*
+ * Now we can take the 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;
+
+ z8530_describe(dev, "I/O", iobase);
+ dev->active=1;
+ return b;
+
+fail_unit:
+ unregister_netdev(b->dev[0]->pppdev.dev);
+
+dmafail2:
+ free_dma(dev->chanA.rxdma);
+dmafail:
+ free_dma(dev->chanA.txdma);
+fail:
+ free_irq(irq, dev);
+fail1_1:
+ free_netdev(b->dev[1]->pppdev.dev);
+fail1_0:
+ free_netdev(b->dev[0]->pppdev.dev);
+fail2:
+ kfree(b);
+fail3:
+ release_region(iobase,8);
+ return NULL;
+}
+
+static void __exit slvl_shutdown(struct slvl_board *b)
+{
+ int u;
+
+ z8530_shutdown(&b->board);
+
+ for(u=0; u<2; u++)
+ {
+ struct net_device *d = b->dev[u]->pppdev.dev;
+ unregister_netdev(d);
+ free_netdev(d);
+ }
+
+ free_irq(b->board.irq, &b->board);
+ free_dma(b->board.chanA.rxdma);
+ free_dma(b->board.chanA.txdma);
+ /* DMA off on the card, drop DTR */
+ outb(0, b->iobase);
+ release_region(b->iobase, 8);
+ kfree(b);
+}
+
+
+static int io=0x238;
+static int txdma=1;
+static int rxdma=3;
+static int irq=5;
+static int slow=0;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "The I/O base of the Sealevel card");
+module_param(txdma, int, 0);
+MODULE_PARM_DESC(txdma, "Transmit DMA channel");
+module_param(rxdma, int, 0);
+MODULE_PARM_DESC(rxdma, "Receive DMA channel");
+module_param(irq, int, 0);
+MODULE_PARM_DESC(irq, "The interrupt line setting for the SeaLevel card");
+module_param(slow, bool, 0);
+MODULE_PARM_DESC(slow, "Set this for an older Sealevel card such as the 4012");
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Modular driver for the SeaLevel 4021");
+
+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;
+}
+
+static void __exit slvl_cleanup_module(void)
+{
+ if(slvl_unit)
+ slvl_shutdown(slvl_unit);
+}
+
+module_init(slvl_init_module);
+module_exit(slvl_cleanup_module);