/*
* Aironet 4500 Pcmcia driver
*
* Elmer Joandi, Januar 1999
* Copyright Elmer Joandi, all rights restricted
*
*
* Revision 0.1 ,started 30.12.1998
*
*
*/
#define DRV_NAME "aironet4500_cs"
#define DRV_VERSION "0.1"
static const char *awc_version =
DRV_NAME ".c v" DRV_VERSION " 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n";
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/ethtool.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/bitops.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ciscode.h>
#if LINUX_VERSION_CODE < 0x20300
#ifdef MODULE
#include <pcmcia/k_compat.h>
#endif
#endif
#include <pcmcia/ds.h>
#include "../aironet4500.h"
static u_int irq_mask = 0x5eF8;
static int awc_ports[] = {0x140,0x100,0xc0, 0x80 };
#if LINUX_VERSION_CODE > 0x20100
MODULE_PARM(irq_mask, "i");
#endif
#define RUN_AT(x) (jiffies+(x))
#ifdef PCMCIA_DEBUG
static int pc_debug = PCMCIA_DEBUG;
MODULE_PARM(pc_debug, "i");
#define PC_DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
static char *version =
"aironet4500_cs.c v0.1 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n";
#else
#define PC_DEBUG(n, args...)
#endif
/* Index of functions. */
static dev_info_t dev_info = "aironet4500_cs";
static dev_link_t *awc_attach(void);
static void awc_detach(dev_link_t *);
static void awc_release(u_long arg);
static int awc_event(event_t event, int priority,
event_callback_args_t *args);
static dev_link_t *dev_list;
static void cs_error(client_handle_t handle, int func, int ret)
{
#if CS_RELEASE_CODE < 0x2911
CardServices(ReportError, dev_info, (void *)func, (void *)ret);
#else
error_info_t err = { func, ret };
CardServices(ReportError, handle, &err);
#endif
}
#define CFG_CHECK(fn, args...) if (CardServices(fn, args) != 0) goto next_entry
static void flush_stale_links(void)
{
dev_link_t *link, *next;
for (link = dev_list; link; link = next) {
next = link->next;
if (link->state & DEV_STALE_LINK)
awc_detach(link);
}
}
/*
We never need to do anything when a awc device is "initialized"
by the net software, because we only register already-found cards.
*/
static int awc_pcmcia_init(struct net_device *dev)
{
return awc_init(dev);
}
static int awc_pcmcia_open(struct net_device *dev)
{
dev_link_t *link;
int status;
for (link = dev_list; link; link = link->next)
if (link->priv == dev) break;
if (!DEV_OK(link))
return -ENODEV;
status = awc_open(dev);
if (!status )
link->open++;
return status;
}
static int awc_pcmcia_close(struct net_device *dev)
{
// int ioaddr = dev->base_addr;
dev_link_t *link;
int ret;
for (link = dev_list; link; link = link->next)
if (link->priv == dev) break;
if (link == NULL)
return -ENODEV;
PC_DEBUG(2, "%s: closing device.\n", dev->name);
link->open--;
ret = awc_close(dev);
if (link->state & DEV_STALE_CONFIG) {
link->release.expires = RUN_AT( HZ/20 );
link->state |= DEV_RELEASE_PENDING;
add_timer(&link->release);
}
return ret;
}
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, DRV_NAME);
strcpy(info->version, DRV_VERSION);
sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
}
#ifdef PCMCIA_DEBUG
static u32 netdev_get_msglevel(struct net_device *dev)
{
return pc_debug;
}
static void netdev_set_msglevel(struct net_device *dev, u32 level)
{
pc_debug = level;
}
#endif /* PCMCIA_DEBUG */
static struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
#ifdef PCMCIA_DEBUG
.get_msglevel = netdev_get_msglevel,
.set_msglevel = netdev_set_msglevel,
#endif /* PCMCIA_DEBUG */
};
/*
awc_attach() creates an "instance" of the driver, allocating
local data structures for one device. The device is registered
with Card Services.
*/
static dev_link_t *awc_attach(void)
{
client_reg_t client_reg;
dev_link_t *link = NULL;
struct net_device *dev = NULL;
int ret;
PC_DEBUG(0, "awc_attach()\n");
flush_stale_links();
/* Create the PC card device object. */
link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
if (!link)
return NULL;
memset(link, 0, sizeof(struct dev_link_t));
link->dev = kmalloc(sizeof(struct dev_node_t), GFP_KERNEL);
if (!link->dev) {
kfree(link);
return NULL;
}
memset(link->dev, 0, sizeof(struct dev_node_t));
link->release.function = &awc_release;
link->release.data = (u_long)link;
// link->io.NumPorts1 = 32;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
// link->io.IOAddrLines = 5;
link->irq.Attributes = IRQ_HANDLE_PRESENT ; // |IRQ_TYPE_EXCLUSIVE ;
link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
link->irq.IRQInfo2 = irq_mask;
link->irq.Handler = &awc_interrupt;
link->conf.Attributes = CONF_ENABLE_IRQ;
link->conf.Vcc = 50;
link->conf.IntType = INT_MEMORY_AND_IO;
link->conf.ConfigIndex = 1;
link->conf.Present = PRESENT_OPTION;
/* Create the network device object. */
dev = kmalloc(sizeof(struct net_device ), GFP_KERNEL);
// dev = init_etherdev(0, sizeof(struct awc_private) );
if (!dev ) {
printk(KERN_CRIT "out of mem on dev alloc \n");
kfree(link->dev);
kfree(link);
return NULL;
};
memset(dev,0,sizeof(struct net_device));
dev->priv = kmalloc(sizeof(struct awc_private), GFP_KERNEL);
if (!dev->priv ) {printk(KERN_CRIT "out of mem on dev priv alloc \n"); kfree(dev); return NULL;};
memset(dev->priv,0,sizeof(struct awc_private));
// link->dev->minor = dev->minor;
// link->dev->major = dev->major;
/* The 4500-specific entries in the device structure. */
// dev->tx_queue_len = tx_queue_len;
dev->hard_start_xmit = &awc_start_xmit;
// dev->set_config = &awc_config_misiganes,aga mitte awc_config;
dev->get_stats = &awc_get_stats;
// dev->set_multicast_list = &awc_set_multicast_list;
SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
strcpy(dev->name, ((struct awc_private *)dev->priv)->node.dev_name);
ether_setup(dev);
dev->init = &awc_pcmcia_init;
dev->open = &awc_pcmcia_open;
dev->stop = &awc_pcmcia_close;
link->priv = dev;
#if CS_RELEASE_CODE > 0x2911
link->irq.Instance = dev;
#endif
/* Register with Card Services */
link->next = dev_list;
dev_list = link;
client_reg.dev_info = &dev_info;
client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
client_reg.EventMask =
CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
client_reg.event_handler = &awc_event;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
ret = CardServices(RegisterClient, &link->handle, &client_reg);
if (ret != 0) {
cs_error(link->handle, RegisterClient, ret);
awc_detach(link);
return NULL;
}
return link;
} /* awc_attach */
/*
This deletes a driver "instance". The device is de-registered
with Card Services. If it has been released, all local data
structures are freed. Otherwise, the structures will be freed
when the device is released.
*/
static void awc_detach(dev_link_t *link)
{
dev_link_t **linkp;
unsigned long flags;
int i=0;
DEBUG(0, "awc_detach(0x%p)\n", link);
/* Locate device structure */
for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
if (*linkp == link) break;
if (*linkp == NULL)
return;
save_flags(flags);
cli();
if (link->state & DEV_RELEASE_PENDING) {
del_timer(&link->release);
link->state &= ~DEV_RELEASE_PENDING;
}
restore_flags(flags);
if (link->state & DEV_CONFIG) {
awc_release((u_long)link);
if (link->state & DEV_STALE_CONFIG) {
link->state |= DEV_STALE_LINK;
return;
}
}
if (link->handle)
CardServices(DeregisterClient, link->handle);
/* Unlink device structure, free bits */
*linkp = link->next;
i=0;
while ( i < MAX_AWCS) {
if (!aironet4500_devices[i])
{i++; continue;}
if (aironet4500_devices[i] == link->priv){
if (awc_proc_unset_fun)
awc_proc_unset_fun(i);
aironet4500_devices[i]=0;
}
i++;
}
if (link->priv) {
//struct net_device *dev = link->priv;
// dam dam damn mif (dev->priv)
// kfree(dev->priv);
kfree(link->priv);
}
kfree(link->dev);
kfree(link);
} /* awc_detach */
/*
awc_pcmcia_config() is scheduled to run after a CARD_INSERTION event
is received, to configure the PCMCIA socket, and to make the
ethernet device available to the system.
*/
#define CS_CHECK(fn, args...) \
while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
static void awc_pcmcia_config(dev_link_t *link)
{
client_handle_t handle;
struct net_device *dev;
struct awc_private *lp;
tuple_t tuple;
int ii;
cisparse_t parse;
u_short buf[64];
int last_fn, last_ret, i = 0;
// int ioaddr;
u16 *phys_addr;
int retval;
handle = link->handle;
dev = link->priv;
phys_addr = (u16 *)dev->dev_addr;
PC_DEBUG(0, "awc_pcmcia_config(0x%p)\n", link);
tuple.Attributes = 0;
tuple.DesiredTuple = CISTPL_CONFIG;
CS_CHECK(GetFirstTuple, handle, &tuple);
tuple.TupleData = (cisdata_t *)buf;
tuple.TupleDataMax = 64;
tuple.TupleOffset = 0;
CS_CHECK(GetTupleData, handle, &tuple);
CS_CHECK(ParseTuple, handle, &tuple, &parse);
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
/* Configure card */
link->state |= DEV_CONFIG;
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
CS_CHECK(GetFirstTuple, handle, &tuple);
while (1) {
cistpl_cftable_entry_t dflt = { 0 };
cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
CFG_CHECK(GetTupleData, handle, &tuple);
CFG_CHECK(ParseTuple, handle, &tuple, &parse);
if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
if (cfg->index == 0) goto next_entry;
link->conf.ConfigIndex = cfg->index;
/* Use power settings for Vcc and Vpp if present */
/* Note that the CIS values need to be rescaled */
if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp1 = link->conf.Vpp2 =
cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp1 = link->conf.Vpp2 =
dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
/* Do we need to allocate an interrupt? */
if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
link->conf.Attributes |= CONF_ENABLE_IRQ;
/* IO window settings */
link->io.NumPorts1 = link->io.NumPorts2 = 0;
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
if (!(io->flags & CISTPL_IO_8BIT))
link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
if (!(io->flags & CISTPL_IO_16BIT)) {
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
printk(KERN_CRIT "8-bit IO not supported on this aironet 4500 driver \n");
}
link->io.BasePort1 = io->win[0].base;
link->io.NumPorts1 = io->win[0].len;
if (io->nwin > 1) {
link->io.Attributes2 = link->io.Attributes1;
link->io.BasePort2 = io->win[1].base;
link->io.NumPorts2 = io->win[1].len;
}
}
ii = 0;
last_fn = RequestIO;
while ((last_ret = CardServices(RequestIO, link->handle, &link->io)) ){
if (ii > 4)
goto cs_failed;
link->io.BasePort1 = awc_ports[ii];
ii++;
};
break;
next_entry:
if (CardServices(GetNextTuple, handle, &tuple))
break;
}
if (link->conf.Attributes & CONF_ENABLE_IRQ){
ii = 0; last_fn = RequestIRQ;
while ((last_ret = CardServices(RequestIRQ, link->handle, &link->irq)) ){
ii++;
while (!(irq_mask & (1 << ii) ) && ii < 15)
ii++;
link->irq.IRQInfo2 = 1 << ii;
if(ii > 15)
goto cs_failed;
printk("trying irq %d , mask %x \n",ii, link->irq.IRQInfo2);
};
}
CS_CHECK(RequestConfiguration, link->handle, &link->conf);
dev->irq = link->irq.AssignedIRQ;
dev->base_addr = link->io.BasePort1;
awc_private_init( dev);
retval = register_netdev(dev);
if (retval != 0) {
printk(KERN_NOTICE "awc_cs: register_netdev() failed for dev %x retval %x\n",(unsigned int)dev,retval);
goto failed;
}
if(awc_pcmcia_init(dev)) goto failed;
i=0;
while (aironet4500_devices[i] && i < MAX_AWCS-1) i++;
if (!aironet4500_devices[i]){
aironet4500_devices[i]=dev;
if (awc_proc_set_fun)
awc_proc_set_fun(i);
}
link->state &= ~DEV_CONFIG_PENDING;
lp = (struct awc_private *)dev->priv;
DEBUG(1,"pcmcia config complete on port %x \n",(unsigned int)dev->base_addr);
return;
cs_failed:
cs_error(link->handle, last_fn, last_ret);
link->dev=NULL;
failed:
awc_release((u_long)link);
return;
} /* awc_pcmcia_config */
/*
After a card is removed, awc_release() will unregister the net
device, and release the PCMCIA configuration. If the device is
still open, this will be postponed until it is closed.
*/
static void awc_release(u_long arg)
{
dev_link_t *link = (dev_link_t *)arg;
struct net_device *dev = link->priv;
DEBUG(0, "awc_release(0x%p)\n", link);
if (link->open) {
DEBUG(1, "awc_cs: release postponed, '%s' still open\n",
link->dev->dev_name);
link->state |= DEV_STALE_CONFIG;
return;
}
CardServices(ReleaseConfiguration, link->handle);
CardServices(ReleaseIO, link->handle, &link->io);
CardServices(ReleaseIRQ, link->handle, &link->irq);
CardServices(ReleaseWindow, link->win);
if (link->dev)
unregister_netdev(dev);
// link->dev = NULL;
link->state &= ~DEV_CONFIG;
if (link->state & DEV_STALE_LINK)
awc_detach(link);
} /* awc_release */
/*
The card status event handler. Mostly, this schedules other
stuff to run after an event is received. A CARD_REMOVAL event
also sets some flags to discourage the net drivers from trying
to talk to the card any more.
*/
static int awc_event(event_t event, int priority,
event_callback_args_t *args)
{
dev_link_t *link = args->client_data;
struct net_device *dev = link->priv;
PC_DEBUG(1, "awc_event(0x%06x)\n", event);
switch (event) {
case CS_EVENT_CARD_REMOVAL:
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG) {
netif_device_detach(dev);
link->release.expires = RUN_AT( HZ/20 );
add_timer(&link->release);
}
break;
case CS_EVENT_CARD_INSERTION:
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
awc_pcmcia_config(link);
break;
case CS_EVENT_PM_SUSPEND:
link->state |= DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
if (link->state & DEV_CONFIG) {
if (link->open)
netif_device_detach(dev);
CardServices(ReleaseConfiguration, link->handle);
}
break;
case CS_EVENT_PM_RESUME:
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
if (link->state & DEV_CONFIG) {
CardServices(RequestConfiguration, link->handle, &link->conf);
if (link->open) {
// awc_reset(dev);
netif_device_attach(dev);
}
}
break;
}
return 0;
} /* awc_event */
static int __init aironet_cs_init(void)
{
servinfo_t serv;
/* Always emit the version, before any failure. */
printk(KERN_INFO"%s", awc_version);
PC_DEBUG(0, "%s\n", version);
CardServices(GetCardServicesInfo, &serv);
if (serv.Revision != CS_RELEASE_CODE) {
printk(KERN_NOTICE "awc_cs: Card Services release "
"does not match!\n");
return -1;
}
register_pcmcia_driver(&dev_info, &awc_attach, &awc_detach);
return 0;
}
static void __exit aironet_cs_exit(void)
{
DEBUG(0, "awc_cs: unloading %c ",'\n');
unregister_pcmcia_driver(&dev_info);
while (dev_list != NULL) {
if (dev_list->state & DEV_CONFIG)
awc_release((u_long)dev_list);
awc_detach(dev_list);
}
// while (dev_list != NULL)
// awc_detach(dev_list);
}
module_init(aironet_cs_init);
module_exit(aironet_cs_exit);
MODULE_LICENSE("GPL");
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