Commit 52e8a6a2 authored by Krzysztof Hałasa's avatar Krzysztof Hałasa
Browse files

WAN: Convert Zilog-based drivers to generic HDLC


Signed-off-by: default avatarKrzysztof Hałasa <khc@pm.waw.pl>
parent aca25753
......@@ -25,7 +25,7 @@ if WAN
# There is no way to detect a comtrol sv11 - force it modular for now.
config HOSTESS_SV11
tristate "Comtrol Hostess SV-11 support"
depends on ISA && m && ISA_DMA_API && INET
depends on ISA && m && ISA_DMA_API && INET && HDLC
help
Driver for Comtrol Hostess SV-11 network card which
operates on low speed synchronous serial links at up to
......@@ -88,7 +88,7 @@ config LANMEDIA
# There is no way to detect a Sealevel board. Force it modular
config SEALEVEL_4021
tristate "Sealevel Systems 4021 support"
depends on ISA && m && ISA_DMA_API && INET
depends on ISA && m && ISA_DMA_API && INET && HDLC
help
This is a driver for the Sealevel Systems ACB 56 serial I/O adapter.
......
......@@ -21,11 +21,11 @@ pc300-y := pc300_drv.o
pc300-$(CONFIG_PC300_MLPPP) += pc300_tty.o
pc300-objs := $(pc300-y)
obj-$(CONFIG_HOSTESS_SV11) += z85230.o syncppp.o hostess_sv11.o
obj-$(CONFIG_SEALEVEL_4021) += z85230.o syncppp.o sealevel.o
obj-$(CONFIG_HOSTESS_SV11) += z85230.o hostess_sv11.o
obj-$(CONFIG_SEALEVEL_4021) += z85230.o sealevel.o
obj-$(CONFIG_COSA) += cosa.o
obj-$(CONFIG_FARSYNC) += farsync.o
obj-$(CONFIG_DSCC4) += dscc4.o
obj-$(CONFIG_DSCC4) += dscc4.o
obj-$(CONFIG_LANMEDIA) += syncppp.o
obj-$(CONFIG_X25_ASY) += x25_asy.o
......
......@@ -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 @@ static void hostess_input(struct z8530_channel *c, struct sk_buff *skb)
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_open(struct net_device *d)
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_close(struct net_device *d)
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_AUTHOR("Alan Cox");
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
......@@ -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 @@ struct slvl_board
* Network driver support routines
*/