Viewing file:  ixj_pcmcia.c (8.41 KB) -rw-r--r--
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#include "ixj-ver.h"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kernel.h> /* printk() */
#include <linux/fs.h> /* everything... */
#include <linux/errno.h> /* error codes */
#include <linux/slab.h>
#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include "ixj.h"
/*
* PCMCIA service support for Quicknet cards
*/
#ifdef PCMCIA_DEBUG
static int pc_debug = PCMCIA_DEBUG;
MODULE_PARM(pc_debug, "i");
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
#else
#define DEBUG(n, args...)
#endif
typedef struct ixj_info_t {
int ndev;
dev_node_t node;
struct ixj *port;
} ixj_info_t;
static dev_link_t *ixj_attach(void);
static void ixj_detach(dev_link_t *);
static void ixj_config(dev_link_t * link);
static void ixj_cs_release(u_long arg);
static int ixj_event(event_t event, int priority, event_callback_args_t * args);
static dev_info_t dev_info = "ixj_cs";
static dev_link_t *dev_list = NULL;
static void cs_error(client_handle_t handle, int func, int ret)
{
error_info_t err =
{
func, ret
};
CardServices(ReportError, handle, &err);
}
static dev_link_t *ixj_attach(void)
{
client_reg_t client_reg;
dev_link_t *link;
int ret;
DEBUG(0, "ixj_attach()\n");
/* Create new ixj device */
link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
if (!link)
return NULL;
memset(link, 0, sizeof(struct dev_link_t));
link->release.function = &ixj_cs_release;
link->release.data = (u_long) link;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
link->io.IOAddrLines = 3;
link->conf.Vcc = 50;
link->conf.IntType = INT_MEMORY_AND_IO;
link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
if (!link->priv)
return NULL;
memset(link->priv, 0, sizeof(struct ixj_info_t));
/* 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 = &ixj_event;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
ret = CardServices(RegisterClient, &link->handle, &client_reg);
if (ret != CS_SUCCESS) {
cs_error(link->handle, RegisterClient, ret);
ixj_detach(link);
return NULL;
}
return link;
}
static void ixj_detach(dev_link_t * link)
{
dev_link_t **linkp;
long flags;
int ret;
DEBUG(0, "ixj_detach(0x%p)\n", link);
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)
ixj_cs_release((u_long) link);
if (link->handle) {
ret = CardServices(DeregisterClient, link->handle);
if (ret != CS_SUCCESS)
cs_error(link->handle, DeregisterClient, ret);
}
/* Unlink device structure, free bits */
*linkp = link->next;
kfree(link->priv);
kfree(link);
}
#define CS_CHECK(fn, args...) \
while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
#define CFG_CHECK(fn, args...) \
if (CardServices(fn, args) != 0) goto next_entry
static void ixj_get_serial(dev_link_t * link, IXJ * j)
{
client_handle_t handle;
tuple_t tuple;
u_short buf[128];
char *str;
int last_ret, last_fn, i, place;
handle = link->handle;
DEBUG(0, "ixj_get_serial(0x%p)\n", link);
tuple.TupleData = (cisdata_t *) buf;
tuple.TupleOffset = 0;
tuple.TupleDataMax = 80;
tuple.Attributes = 0;
tuple.DesiredTuple = CISTPL_VERS_1;
CS_CHECK(GetFirstTuple, handle, &tuple);
CS_CHECK(GetTupleData, handle, &tuple);
str = (char *) buf;
printk("PCMCIA Version %d.%d\n", str[0], str[1]);
str += 2;
printk("%s", str);
str = str + strlen(str) + 1;
printk(" %s", str);
str = str + strlen(str) + 1;
place = 1;
for (i = strlen(str) - 1; i >= 0; i--) {
switch (str[i]) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
j->serial += (str[i] - 48) * place;
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
j->serial += (str[i] - 55) * place;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
j->serial += (str[i] - 87) * place;
break;
}
place = place * 0x10;
}
str = str + strlen(str) + 1;
printk(" version %s\n", str);
cs_failed:
return;
}
static void ixj_config(dev_link_t * link)
{
IXJ *j;
client_handle_t handle;
ixj_info_t *info;
tuple_t tuple;
u_short buf[128];
cisparse_t parse;
config_info_t conf;
cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
cistpl_cftable_entry_t dflt =
{
0
};
int last_ret, last_fn;
handle = link->handle;
info = link->priv;
DEBUG(0, "ixj_config(0x%p)\n", link);
tuple.TupleData = (cisdata_t *) buf;
tuple.TupleOffset = 0;
tuple.TupleDataMax = 255;
tuple.Attributes = 0;
tuple.DesiredTuple = CISTPL_CONFIG;
CS_CHECK(GetFirstTuple, handle, &tuple);
CS_CHECK(GetTupleData, handle, &tuple);
CS_CHECK(ParseTuple, handle, &tuple, &parse);
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
link->state |= DEV_CONFIG;
CS_CHECK(GetConfigurationInfo, handle, &conf);
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
tuple.Attributes = 0;
CS_CHECK(GetFirstTuple, handle, &tuple);
while (1) {
CFG_CHECK(GetTupleData, handle, &tuple);
CFG_CHECK(ParseTuple, handle, &tuple, &parse);
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
link->conf.ConfigIndex = cfg->index;
link->io.BasePort1 = io->win[0].base;
link->io.NumPorts1 = io->win[0].len;
if (io->nwin == 2) {
link->io.BasePort2 = io->win[1].base;
link->io.NumPorts2 = io->win[1].len;
}
CFG_CHECK(RequestIO, link->handle, &link->io);
/* If we've got this far, we're done */
break;
}
next_entry:
if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
dflt = *cfg;
CS_CHECK(GetNextTuple, handle, &tuple);
}
CS_CHECK(RequestConfiguration, handle, &link->conf);
/*
* Register the card with the core.
*/
j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
info->ndev = 1;
info->node.major = PHONE_MAJOR;
link->dev = &info->node;
ixj_get_serial(link, j);
link->state &= ~DEV_CONFIG_PENDING;
return;
cs_failed:
cs_error(link->handle, last_fn, last_ret);
ixj_cs_release((u_long) link);
}
static void ixj_cs_release(u_long arg)
{
dev_link_t *link = (dev_link_t *) arg;
ixj_info_t *info = link->priv;
DEBUG(0, "ixj_cs_release(0x%p)\n", link);
info->ndev = 0;
link->dev = NULL;
CardServices(ReleaseConfiguration, link->handle);
CardServices(ReleaseIO, link->handle, &link->io);
link->state &= ~DEV_CONFIG;
}
static int ixj_event(event_t event, int priority, event_callback_args_t * args)
{
dev_link_t *link = args->client_data;
DEBUG(1, "ixj_event(0x%06x)\n", event);
switch (event) {
case CS_EVENT_CARD_REMOVAL:
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG) {
link->release.expires = jiffies + (HZ / 20);
link->state |= DEV_RELEASE_PENDING;
add_timer(&link->release);
}
break;
case CS_EVENT_CARD_INSERTION:
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
ixj_config(link);
break;
case CS_EVENT_PM_SUSPEND:
link->state |= DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
if (link->state & DEV_CONFIG)
CardServices(ReleaseConfiguration, link->handle);
break;
case CS_EVENT_PM_RESUME:
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
if (DEV_OK(link))
CardServices(RequestConfiguration, link->handle, &link->conf);
break;
}
return 0;
}
int __init ixj_register_pcmcia(void)
{
servinfo_t serv;
DEBUG(0, "%s\n", version);
CardServices(GetCardServicesInfo, &serv);
if (serv.Revision != CS_RELEASE_CODE) {
printk(KERN_NOTICE "ixj_cs: Card Services release does not match!\n");
return -EINVAL;
}
register_pcmcia_driver(&dev_info, &ixj_attach, &ixj_detach);
return 0;
}
static void ixj_pcmcia_unload(void)
{
DEBUG(0, "ixj_cs: unloading\n");
unregister_pcmcia_driver(&dev_info);
while (dev_list != NULL)
ixj_detach(dev_list);
}
module_init(ixj_register_pcmcia);
module_exit(ixj_pcmcia_unload);
MODULE_LICENSE("GPL");
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