path: root/drivers/ide/ide-proc.c

/*
 *  Copyright (C) 1997-1998	Mark Lord
 *  Copyright (C) 2003		Red Hat
 *
 *  Some code was moved here from ide.c, see it for original copyrights.
 */

/*
 * This is the /proc/ide/ filesystem implementation.
 *
 * Drive/Driver settings can be retrieved by reading the drive's
 * "settings" files.  e.g.    "cat /proc/ide0/hda/settings"
 * To write a new value "val" into a specific setting "name", use:
 *   echo "name:val" >/proc/ide/ide0/hda/settings
 */

#include <linux/module.h>

#include <asm/uaccess.h>
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/ctype.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include <linux/slab.h>

#include <asm/io.h>

static struct proc_dir_entry *proc_ide_root;

static int ide_imodel_proc_show(struct seq_file *m, void *v)
{
	ide_hwif_t	*hwif = (ide_hwif_t *) m->private;
	const char	*name;

	switch (hwif->chipset) {
	case ide_generic:	name = "generic";	break;
	case ide_pci:		name = "pci";		break;
	case ide_cmd640:	name = "cmd640";	break;
	case ide_dtc2278:	name = "dtc2278";	break;
	case ide_ali14xx:	name = "ali14xx";	break;
	case ide_qd65xx:	name = "qd65xx";	break;
	case ide_umc8672:	name = "umc8672";	break;
	case ide_ht6560b:	name = "ht6560b";	break;
	case ide_4drives:	name = "4drives";	break;
	case ide_pmac:		name = "mac-io";	break;
	case ide_au1xxx:	name = "au1xxx";	break;
	case ide_palm3710:      name = "palm3710";      break;
	case ide_acorn:		name = "acorn";		break;
	default:		name = "(unknown)";	break;
	}
	seq_printf(m, "%s\n", name);
	return 0;
}

static int ide_imodel_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, ide_imodel_proc_show, PDE(inode)->data);
}

static const struct file_operations ide_imodel_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= ide_imodel_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int ide_mate_proc_show(struct seq_file *m, void *v)
{
	ide_hwif_t	*hwif = (ide_hwif_t *) m->private;

	if (hwif && hwif->mate)
		seq_printf(m, "%s\n", hwif->mate->name);
	else
		seq_printf(m, "(none)\n");
	return 0;
}

static int ide_mate_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, ide_mate_proc_show, PDE(inode)->data);
}

static const struct file_operations ide_mate_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= ide_mate_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int ide_channel_proc_show(struct seq_file *m, void *v)
{
	ide_hwif_t	*hwif = (ide_hwif_t *) m->private;

	seq_printf(m, "%c\n", hwif->channel ? '1' : '0');
	return 0;
}

static int ide_channel_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, ide_channel_proc_show, PDE(inode)->data);
}

static const struct file_operations ide_channel_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= ide_channel_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int ide_identify_proc_show(struct seq_file *m, void *v)
{
	ide_drive_t *drive = (ide_drive_t *)m->private;
	u8 *buf;

	if (!drive) {
		seq_putc(m, '\n');
		return 0;
	}

	buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
	if (taskfile_lib_get_identify(drive, buf) == 0) {
		__le16 *val = (__le16 *)buf;
		int i;

		for (i = 0; i < SECTOR_SIZE / 2; i++) {
			seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
					(i % 8) == 7 ? '\n' : ' ');
		}
	} else
		seq_putc(m, buf[0]);
	kfree(buf);
	return 0;
}

static int ide_identify_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, ide_identify_proc_show, PDE(inode)->data);
}

static const struct file_operations ide_identify_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= ide_identify_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release