drivers/ide/ide-proc.c



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/*
 *  linux/drivers/ide/ide-proc.c	Version 1.05	Mar 05, 2003
 *
 *  Copyright (C) 1997-1998	Mark Lord
 *  Copyright (C) 2003		Red Hat <alan@redhat.com>
 *
 *  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
 *
 * Also useful, "cat /proc/ide0/hda/[identify, smart_values,
 * smart_thresholds, capabilities]" will issue an IDENTIFY /
 * PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
 * SENSE CAPABILITIES command to /dev/hda, and then dump out the
 * returned data as 256 16-bit words.  The "hdparm" utility will
 * be updated someday soon to use this mechanism.
 *
 */

#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/hdreg.h>
#include <linux/ide.h>
#include <linux/seq_file.h>

#include <asm/io.h>

static struct proc_dir_entry *proc_ide_root;

static int proc_ide_read_imodel
	(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	ide_hwif_t	*hwif = (ide_hwif_t *) data;
	int		len;
	const char	*name;

	/*
	 * Neither ide_unknown nor ide_forced should be set at this point.
	 */
	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_rz1000:	name = "rz1000";	break;
		case ide_trm290:	name = "trm290";	break;
		case ide_cmd646:	name = "cmd646";	break;
		case ide_cy82c693:	name = "cy82c693";	break;
		case ide_4drives:	name = "4drives";	break;
		case ide_pmac:		name = "mac-io";	break;
		case ide_au1xxx:	name = "au1xxx";	break;
		case ide_etrax100:	name = "etrax100";	break;
		case ide_acorn:		name = "acorn";		break;
		default:		name = "(unknown)";	break;
	}
	len = sprintf(page, "%s\n", name);
	PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}

static int proc_ide_read_mate