WAN: Convert Zilog-based drivers to generic HDLC
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
diff --git a/drivers/net/wan/sealevel.c b/drivers/net/wan/sealevel.c
index 44a89df..c023584 100644
--- a/drivers/net/wan/sealevel.c
+++ b/drivers/net/wan/sealevel.c
@@ -8,6 +8,7 @@
*
* (c) Copyright 1999, 2001 Alan Cox
* (c) Copyright 2001 Red Hat Inc.
+ * Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>
*
*/
@@ -19,6 +20,7 @@
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/delay.h>
+#include <linux/hdlc.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <net/arp.h>
@@ -27,22 +29,19 @@
#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 slvl_device dev[2];
struct z8530_dev board;
int iobase;
};
@@ -51,72 +50,69 @@
* Network driver support routines
*/
+static inline struct slvl_device* dev_to_chan(struct net_device *dev)
+{
+ return (struct slvl_device *)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 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_trim(skb, skb->len - 2);
+ skb->protocol = hdlc_type_trans(skb, c->netdevice);
skb_reset_mac_header(skb);
- skb->dev=c->netdevice;
- /*
- * Send it to the PPP layer. We don't have time to process
- * it right now.
- */
+ skb->dev = c->netdevice;
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;
+ struct slvl_device *slvl = dev_to_chan(d);
int err = -1;
int unit = slvl->channel;
-
+
/*
- * Link layer up.
+ * Link layer up.
*/
- switch(unit)
+ switch (unit)
{
case 0:
- err=z8530_sync_dma_open(d, slvl->chan);
+ err = z8530_sync_dma_open(d, slvl->chan);
break;
case 1:
- err=z8530_sync_open(d, slvl->chan);
+ err = z8530_sync_open(d, slvl->chan);
break;
}
-
- if(err)
+
+ if (err)
return err;
- /*
- * Begin PPP
- */
- err=sppp_open(d);
- if(err)
- {
- switch(unit)
- {
+
+ err = hdlc_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;
-
+
+ slvl->chan->rx_function = sealevel_input;
+
/*
* Go go go
*/
@@ -126,26 +122,19 @@
static int sealevel_close(struct net_device *d)
{
- struct slvl_device *slvl=d->priv;
+ struct slvl_device *slvl = dev_to_chan(d);
int unit = slvl->channel;
-
+
/*
* Discard new frames
*/
-
- slvl->chan->rx_function=z8530_null_rx;
-
- /*
- * PPP off
- */
- sppp_close(d);
- /*
- * Link layer down
- */
+ slvl->chan->rx_function = z8530_null_rx;
+
+ hdlc_close(d);
netif_stop_queue(d);
-
- switch(unit)
+
+ switch (unit)
{
case 0:
z8530_sync_dma_close(d, slvl->chan);
@@ -159,210 +148,153 @@
static int sealevel_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)
{
- /* struct slvl_device *slvl=d->priv;
+ /* struct slvl_device *slvl=dev_to_chan(d);
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;
+ return hdlc_ioctl(d, ifr, cmd);
}
/*
- * Passed PPP frames, fire them downwind.
+ * Passed network 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);
+ return z8530_queue_xmit(dev_to_chan(d)->chan, skb);
}
-static int sealevel_neigh_setup(struct neighbour *n)
+static int sealevel_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;
+ if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
+ return 0;
+ return -EINVAL;
+}
+
+static int slvl_setup(struct slvl_device *sv, int iobase, int irq)
+{
+ struct net_device *dev = alloc_hdlcdev(sv);
+ if (!dev)
+ return -1;
+
+ dev_to_hdlc(dev)->attach = sealevel_attach;
+ dev_to_hdlc(dev)->xmit = sealevel_queue_xmit;
+ dev->open = sealevel_open;
+ dev->stop = sealevel_close;
+ dev->do_ioctl = sealevel_ioctl;
+ dev->base_addr = iobase;
+ dev->irq = irq;
+
+ if (register_hdlc_device(dev)) {
+ printk(KERN_ERR "sealevel: unable to register HDLC device\n");
+ free_netdev(dev);
+ return -1;
}
+
+ sv->chan->netdevice = dev;
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;
- d->ml_priv = sv;
- 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,
+
+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);
+ if (!request_region(iobase, 8, "Sealevel 4021")) {
+ printk(KERN_WARNING "sealevel: I/O 0x%X already in use.\n",
+ iobase);
return NULL;
}
-
+
b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL);
- if(!b)
- goto fail3;
+ if (!b)
+ goto err_kzalloc;
- if (!(b->dev[0]= slvl_alloc(iobase, irq)))
- goto fail2;
+ b->dev[0].chan = &b->board.chanA;
+ b->dev[0].channel = 0;
- 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;
+ 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)
+
+ 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;
-
+
+ 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);
-
+
+ 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, IRQF_DISABLED, "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;
-
+ if (request_irq(irq, &z8530_interrupt, IRQF_DISABLED,
+ "SeaLevel", dev) < 0) {
+ printk(KERN_WARNING "sealevel: IRQ %d already in use.\n", irq);
+ goto err_request_irq;
+ }
+
+ dev->irq = irq;
+ dev->chanA.private = &b->dev[0];
+ dev->chanB.private = &b->dev[1];
+ dev->chanA.dev = dev;
+ dev->chanB.dev = dev;
+
+ dev->chanA.txdma = 3;
+ dev->chanA.rxdma = 1;
+ if (request_dma(dev->chanA.txdma, "SeaLevel (TX)"))
+ goto err_dma_tx;
+
+ if (request_dma(dev->chanA.rxdma, "SeaLevel (RX)"))
+ goto err_dma_rx;
+
disable_irq(irq);
-
+
/*
* Begin normal initialise
*/
-
- if(z8530_init(dev)!=0)
- {
+
+ if (z8530_init(dev) != 0) {
printk(KERN_ERR "Z8530 series device not found.\n");
enable_irq(irq);
- goto dmafail2;
+ goto free_hw;
}
- if(dev->type==Z85C30)
- {
+ if (dev->type == Z85C30) {
z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream);
- }
- else
- {
+ } else {
z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream_85230);
}
@@ -370,36 +302,31 @@
/*
* 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;
+ if (slvl_setup(&b->dev[0], iobase, irq))
+ goto free_hw;
+ if (slvl_setup(&b->dev[1], iobase, irq))
+ goto free_netdev0;
z8530_describe(dev, "I/O", iobase);
- dev->active=1;
+ dev->active = 1;
return b;
-fail_unit:
- unregister_netdev(b->dev[0]->pppdev.dev);
-
-dmafail2:
+free_netdev0:
+ unregister_hdlc_device(b->dev[0].chan->netdevice);
+ free_netdev(b->dev[0].chan->netdevice);
+free_hw:
free_dma(dev->chanA.rxdma);
-dmafail:
+err_dma_rx:
free_dma(dev->chanA.txdma);
-fail:
+err_dma_tx:
free_irq(irq, dev);
-fail1_1:
- free_netdev(b->dev[1]->pppdev.dev);
-fail1_0:
- free_netdev(b->dev[0]->pppdev.dev);
-fail2:
+err_request_irq:
kfree(b);
-fail3:
- release_region(iobase,8);
+err_kzalloc:
+ release_region(iobase, 8);
return NULL;
}
@@ -408,14 +335,14 @@
int u;
z8530_shutdown(&b->board);
-
- for(u=0; u<2; u++)
+
+ for (u = 0; u < 2; u++)
{
- struct net_device *d = b->dev[u]->pppdev.dev;
- unregister_netdev(d);
+ struct net_device *d = b->dev[u].chan->netdevice;
+ unregister_hdlc_device(d);
free_netdev(d);
}
-
+
free_irq(b->board.irq, &b->board);
free_dma(b->board.chanA.rxdma);
free_dma(b->board.chanA.txdma);
@@ -451,10 +378,6 @@
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;