WAN: Convert Zilog-based drivers to generic HDLC
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
index f3065d3..e299313 100644
--- a/drivers/net/wan/hostess_sv11.c
+++ b/drivers/net/wan/hostess_sv11.c
@@ -16,6 +16,8 @@
* touching control registers.
*
* Port B isnt wired (why - beats me)
+ *
+ * Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>
*/
#include <linux/module.h>
@@ -26,6 +28,7 @@
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/delay.h>
+#include <linux/hdlc.h>
#include <linux/ioport.h>
#include <net/arp.h>
@@ -33,34 +36,31 @@
#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
*/
+static inline struct z8530_dev* dev_to_sv(struct net_device *dev)
+{
+ return (struct z8530_dev *)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 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_trim(skb, skb->len - 2);
+ skb->protocol = hdlc_type_trans(skb, c->netdevice);
skb_reset_mac_header(skb);
- skb->dev=c->netdevice;
+ skb->dev = c->netdevice;
/*
* Send it to the PPP layer. We don't have time to process
* it right now.
@@ -68,56 +68,51 @@
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->ml_priv;
+ struct z8530_dev *sv11 = dev_to_sv(d);
int err = -1;
-
+
/*
* Link layer up
*/
- switch(dma)
- {
+ switch (dma) {
case 0:
- err=z8530_sync_open(d, &sv11->sync.chanA);
+ err = z8530_sync_open(d, &sv11->chanA);
break;
case 1:
- err=z8530_sync_dma_open(d, &sv11->sync.chanA);
+ err = z8530_sync_dma_open(d, &sv11->chanA);
break;
case 2:
- err=z8530_sync_txdma_open(d, &sv11->sync.chanA);
+ err = z8530_sync_txdma_open(d, &sv11->chanA);
break;
}
-
- if(err)
+
+ if (err)
return err;
- /*
- * Begin PPP
- */
- err=sppp_open(d);
- if(err)
- {
- switch(dma)
- {
+
+ err = hdlc_open(d);
+ if (err) {
+ switch (dma) {
case 0:
- z8530_sync_close(d, &sv11->sync.chanA);
+ z8530_sync_close(d, &sv11->chanA);
break;
case 1:
- z8530_sync_dma_close(d, &sv11->sync.chanA);
+ z8530_sync_dma_close(d, &sv11->chanA);
break;
case 2:
- z8530_sync_txdma_close(d, &sv11->sync.chanA);
+ z8530_sync_txdma_close(d, &sv11->chanA);
break;
- }
+ }
return err;
}
- sv11->sync.chanA.rx_function=hostess_input;
-
+ sv11->chanA.rx_function = hostess_input;
+
/*
* Go go go
*/
@@ -128,30 +123,24 @@
static int hostess_close(struct net_device *d)
{
- struct sv11_device *sv11=d->ml_priv;
+ struct z8530_dev *sv11 = dev_to_sv(d);
/*
* Discard new frames
*/
- sv11->sync.chanA.rx_function=z8530_null_rx;
- /*
- * PPP off
- */
- sppp_close(d);
- /*
- * Link layer down
- */
+ sv11->chanA.rx_function = z8530_null_rx;
+
+ hdlc_close(d);
netif_stop_queue(d);
-
- switch(dma)
- {
+
+ switch (dma) {
case 0:
- z8530_sync_close(d, &sv11->sync.chanA);
+ z8530_sync_close(d, &sv11->chanA);
break;
case 1:
- z8530_sync_dma_close(d, &sv11->sync.chanA);
+ z8530_sync_dma_close(d, &sv11->chanA);
break;
case 2:
- z8530_sync_txdma_close(d, &sv11->sync.chanA);
+ z8530_sync_txdma_close(d, &sv11->chanA);
break;
}
return 0;
@@ -159,232 +148,174 @@
static int hostess_ioctl(struct net_device *d, struct ifreq *ifr, int cmd)
{
- /* struct sv11_device *sv11=d->ml_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->ml_priv;
- if(sv11)
- return z8530_get_stats(&sv11->sync.chanA);
- else
- return NULL;
+ /* struct z8530_dev *sv11=dev_to_sv(d);
+ z8530_ioctl(d,&sv11->chanA,ifr,cmd) */
+ return hdlc_ioctl(d, ifr, cmd);
}
/*
- * Passed PPP frames, fire them downwind.
+ * Passed network frames, fire them downwind.
*/
-
+
static int hostess_queue_xmit(struct sk_buff *skb, struct net_device *d)
{
- struct sv11_device *sv11=d->ml_priv;
- return z8530_queue_xmit(&sv11->sync.chanA, skb);
+ return z8530_queue_xmit(&dev_to_sv(d)->chanA, skb);
}
-static int hostess_neigh_setup(struct neighbour *n)
+static int hostess_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;
- }
- 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;
+ if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
+ return 0;
+ return -EINVAL;
}
/*
* Description block for a Comtrol Hostess SV11 card
*/
-
-static struct sv11_device *sv11_init(int iobase, int irq)
+
+static struct z8530_dev *sv11_init(int iobase, int irq)
{
- struct z8530_dev *dev;
- struct sv11_device *sv;
-
+ struct z8530_dev *sv;
+ struct net_device *netdev;
/*
* 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);
+
+ if (!request_region(iobase, 8, "Comtrol SV11")) {
+ printk(KERN_WARNING "hostess: I/O 0x%X already in use.\n",
+ iobase);
return NULL;
}
-
- sv = kzalloc(sizeof(struct sv11_device), GFP_KERNEL);
- if(!sv)
- goto fail3;
-
- sv->if_ptr=&sv->netdev;
-
- sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup);
- if(!sv->netdev.dev)
- goto fail2;
- dev=&sv->sync;
-
+ sv = kzalloc(sizeof(struct z8530_dev), GFP_KERNEL);
+ if (!sv)
+ goto err_kzalloc;
+
/*
* 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 */
-
+
+ sv->active = 0;
+
+ sv->chanA.ctrlio = iobase + 1;
+ sv->chanA.dataio = iobase + 3;
+ sv->chanB.ctrlio = -1;
+ sv->chanB.dataio = -1;
+ sv->chanA.irqs = &z8530_nop;
+ sv->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, IRQF_DISABLED, "Hostess SV11", dev)<0)
- {
+
+ if (request_irq(irq, &z8530_interrupt, IRQF_DISABLED,
+ "Hostess SV11", sv) < 0) {
printk(KERN_WARNING "hostess: IRQ %d already in use.\n", irq);
- goto fail1;
+ goto err_irq;
}
-
- dev->irq=irq;
- dev->chanA.private=sv;
- dev->chanA.netdevice=sv->netdev.dev;
- dev->chanA.dev=dev;
- dev->chanB.dev=dev;
-
- if(dma)
- {
+
+ sv->irq = irq;
+ sv->chanA.private = sv;
+ sv->chanA.dev = sv;
+ sv->chanB.dev = sv;
+
+ 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;
- }
+ sv->chanA.txdma = 3;
+ sv->chanA.rxdma = 1;
+ outb(0x03 | 0x08, iobase + 4); /* DMA on */
+ if (request_dma(sv->chanA.txdma, "Hostess SV/11 (TX)"))
+ goto err_txdma;
+
+ if (dma == 1)
+ if (request_dma(sv->chanA.rxdma, "Hostess SV/11 (RX)"))
+ goto err_rxdma;
}
/* 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)
- {
+
+ if (z8530_init(sv)) {
printk(KERN_ERR "Z8530 series device not found.\n");
enable_irq(irq);
- goto dmafail2;
+ goto free_dma;
}
- z8530_channel_load(&dev->chanB, z8530_dead_port);
- if(dev->type==Z85C30)
- z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
+ z8530_channel_load(&sv->chanB, z8530_dead_port);
+ if (sv->type == Z85C30)
+ z8530_channel_load(&sv->chanA, z8530_hdlc_kilostream);
else
- z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
-
+ z8530_channel_load(&sv->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
- */
- d->ml_priv = sv;
- sppp_attach(&sv->netdev);
-
- /*
- * Local fields
- */
-
- d->base_addr = iobase;
- d->irq = irq;
-
- if(register_netdev(d))
- {
- printk(KERN_ERR "%s: unable to register device.\n",
- d->name);
- sppp_detach(d);
- goto dmafail2;
- }
+ sv->chanA.netdevice = netdev = alloc_hdlcdev(sv);
+ if (!netdev)
+ goto free_dma;
- z8530_describe(dev, "I/O", iobase);
- dev->active=1;
- return sv;
+ dev_to_hdlc(netdev)->attach = hostess_attach;
+ dev_to_hdlc(netdev)->xmit = hostess_queue_xmit;
+ netdev->open = hostess_open;
+ netdev->stop = hostess_close;
+ netdev->do_ioctl = hostess_ioctl;
+ netdev->base_addr = iobase;
+ netdev->irq = irq;
+
+ if (register_hdlc_device(netdev)) {
+ printk(KERN_ERR "hostess: unable to register HDLC device.\n");
+ free_netdev(netdev);
+ goto free_dma;
}
-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:
+
+ z8530_describe(sv, "I/O", iobase);
+ sv->active = 1;
+ return sv;
+
+free_dma:
+ if (dma == 1)
+ free_dma(sv->chanA.rxdma);
+err_rxdma:
+ if (dma)
+ free_dma(sv->chanA.txdma);
+err_txdma:
+ free_irq(irq, sv);
+err_irq:
kfree(sv);
-fail3:
- release_region(iobase,8);
+err_kzalloc:
+ release_region(iobase, 8);
return NULL;
}
-static void sv11_shutdown(struct sv11_device *dev)
+static void sv11_shutdown(struct z8530_dev *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);
+ unregister_hdlc_device(dev->chanA.netdevice);
+ z8530_shutdown(dev);
+ free_irq(dev->irq, dev);
+ if (dma) {
+ if (dma == 1)
+ free_dma(dev->chanA.rxdma);
+ free_dma(dev->chanA.txdma);
}
- release_region(dev->sync.chanA.ctrlio-1, 8);
- free_netdev(dev->netdev.dev);
+ release_region(dev->chanA.ctrlio - 1, 8);
+ free_netdev(dev->chanA.netdevice);
kfree(dev);
}
-#ifdef MODULE
-
-static int io=0x200;
-static int irq=9;
+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");
@@ -397,22 +328,17 @@
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Modular driver for the Comtrol Hostess SV11");
-static struct sv11_device *sv11_unit;
+static struct z8530_dev *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)
+ if ((sv11_unit = sv11_init(io, irq)) == NULL)
return -ENODEV;
return 0;
}
void cleanup_module(void)
{
- if(sv11_unit)
+ if (sv11_unit)
sv11_shutdown(sv11_unit);
}
-
-#endif
-