patch-2.4.10 linux/drivers/telephony/ixj_pcmcia.c

• Lines: 344
• Date: Fri Sep 7 09:28:37 2001
• Orig file: v2.4.9/linux/drivers/telephony/ixj_pcmcia.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/drivers/telephony/ixj_pcmcia.c linux/drivers/telephony/ixj_pcmcia.c
@@ -0,0 +1,343 @@
+#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");
+