path: root/drivers/pcmcia/pcmcia_ioctl.c

/*
 * pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * The initial developer of the original code is David A. Hinds
 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 *
 * (C) 1999		David A. Hinds
 * (C) 2003 - 2004	Dominik Brodowski
 */

/*
 * This file will go away soon.
 */


#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/ioctl.h>
#include <linux/proc_fs.h>
#include <linux/poll.h>
#include <linux/pci.h>
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
#include <linux/workqueue.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <pcmcia/ss.h>

#include "cs_internal.h"

static int major_dev = -1;


/* Device user information */
#define MAX_EVENTS	32
#define USER_MAGIC	0x7ea4
#define CHECK_USER(u) \
    (((u) == NULL) || ((u)->user_magic != USER_MAGIC))

typedef struct user_info_t {
	u_int			user_magic;
	int			event_head, event_tail;
	event_t			event[MAX_EVENTS];
	struct user_info_t	*next;
	struct pcmcia_socket	*socket;
} user_info_t;


static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s,
						unsigned int function)
{
	struct pcmcia_device *p_dev = NULL;
	unsigned long flags;

	spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
	list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
		if (p_dev->func == function) {
			spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
			return pcmcia_get_dev(p_dev);
		}
	}
	spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
	return NULL;
}

/* backwards-compatible accessing of driver --- by name! */

static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info)
{
	struct device_driver *drv;
	struct pcmcia_driver *p_drv;

	drv = driver_find((char *) dev_info, &pcmcia_bus_type);
	if (!drv)
		return NULL;

	p_drv = container_of(drv, struct pcmcia_driver, drv);

	return (p_drv);
}


#ifdef CONFIG_PROC_FS
static struct proc_dir_entry *proc_pccard = NULL;

static int proc_read_drivers_callback(struct device_driver *driver, void *_m)
{
	struct seq_file *m = _m;
	struct pcmcia_driver *p_drv = container_of(driver,
						   struct pcmcia_driver, drv);

	seq_printf(m, "%-24.24s 1 %d\n", p_drv->drv.name,
#ifdef CONFIG_MODULE_UNLOAD
		      (p_drv->owner) ? module_refcount(p_drv->owner) : 1
#else
		      1
#endif
	);
	return 0;
}

static int pccard_drivers_proc_show(struct seq_file *m, void *v)
{
	return bus_for_each_drv(&pcmcia_bus_type, NULL,
				m, proc_read_drivers_callback);
}

static int pccard_drivers_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, pccard_drivers_proc_show, NULL);
}

static const struct file_operations pccard_drivers_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= pccard_drivers_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};
#endif


#ifdef CONFIG_PCMCIA_PROBE

static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj)
{
	int irq;
	u32 mask;

	irq = adj->resource.irq.IRQ;
	if ((irq < 0) || (irq > 15))
		return -EINVAL;

	if (adj->Action != REMOVE_MANAGED_RESOURCE)
		return 0;

	mask = 1 << irq;

	if (!(s->irq_mask & mask))
		return 0;

	s->irq_mask &= ~mask;

	return 0;
}

#else

static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) {
	return 0;
}

#endif

static int pcmcia_adjust_resource_info(adjust_t *adj)
{
	struct pcmcia_socket *s;
	int ret = -ENOSYS;
	unsigned long flags;

	down_read(&pcmcia_socket_list_rwsem