patch-2.2.17 linux/drivers/s390/block/dasd_setup.c

• Lines: 344
• Date: Thu Jan 1 01:00:00 1970
• Orig file: v2.2.16/drivers/s390/block/dasd_setup.c
• Orig date: Mon Sep 4 18:37:42 2000

diff -u --recursive --new-file v2.2.16/drivers/s390/block/dasd_setup.c linux/drivers/s390/block/dasd_setup.c
@@ -1,343 +0,0 @@
-/* 
- * File...........: linux/drivers/s390/block/dasd_setup.c
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *                : Utz Bacher <utz.bacher@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
- */
-
-#include <linux/ctype.h>
-#include <linux/malloc.h>
-
-#include <linux/dasd.h>
-#include "dasd_types.h"
-
-#define PRINTK_HEADER "dasd(setup):"
-
-#define MIN(a,b) (((a)<(b))?(a):(b))
-
-static int dasd_autodetect = 0;
-int dasd_probeonly = 1;
-static int dasd_count = 0;
-static int dasd_devno[DASD_MAX_DEVICES] =
-{0,};
-int dasd_force_mdsk_flag[DASD_MAX_DEVICES] =
-{0,};
-
-extern char *dasd[DASD_MAX_DEVICES];
-#ifdef CONFIG_DASD_MDSK
-extern char *dasd_force_mdsk[DASD_MAX_DEVICES];
-#endif
-
-typedef struct dasd_range {
-	int from, to;
-	struct dasd_range *next;
-} dasd_range;
-
-static dasd_range *first_range = NULL;
-
-void 
-dasd_add_devno_to_ranges (int devno)
-{
-	dasd_range *p, *prev;
-	for (p = first_range; p; prev = p, p = prev->next) {
-		if (devno >= p->from && devno <= p->to) {
-			PRINT_WARN ("devno %04X already in range %04X-%04X\n",
-				    devno, p->from, p->to);
-			return;
-		}
-		if (devno == (p->from - 1)) {
-			p->from--;
-			return;
-		}
-		if (devno == (p->to + 1)) {
-			p->to++;
-			return;
-		}
-	}
-	prev = kmalloc (sizeof (dasd_range), GFP_ATOMIC);
-	prev->from = prev->to = devno;
-	if (!first_range) {
-		first_range = prev;
-	}
-	return;
-}
-
-int
-dasd_proc_print_probed_ranges (char *buf, char **start, off_t off, int len, int d)
-{
-	dasd_range *p;
-	len = sprintf (buf, "Probed ranges of the DASD driver\n");
-	for (p = first_range; p; p = p->next) {
-		if (len >= PAGE_SIZE - 80)
-			len += sprintf (buf + len, "terminated...\n");
-		if (p != first_range) {
-			len += sprintf (buf + len, ",");
-		}
-		if (p->from == p->to) {
-			len += sprintf (buf + len, "%04x", p->from);
-		} else {
-			len += sprintf (buf + len, "%04x-%04x",
-					p->from, p->to);
-		}
-	}
-	len += sprintf (buf + len, "\n");
-	return len;
-}
-
-static int
-dasd_get_hexdigit (char c)
-{
-	if ((c >= '0') && (c <= '9'))
-		return c - '0';
-	if ((c >= 'a') && (c <= 'f'))
-		return c + 10 - 'a';
-	if ((c >= 'A') && (c <= 'F'))
-		return c + 10 - 'A';
-	return -1;
-}
-
-/* sets the string pointer after the next comma */
-static void
-dasd_scan_for_next_comma (char **strptr)
-{
-	while (((**strptr) != ',') && (**strptr))
-		(*strptr)++;
-
-	/* set the position AFTER the comma */
-	if (**strptr == ',')
-		(*strptr)++;
-}
-
-/*sets the string pointer after the next comma, if a parse error occured */
-static int
-dasd_get_next_int (char **strptr)
-{
-	int j, i = -1;		/* for cosmetic reasons first -1, then 0 */
-	if (isxdigit (**strptr)) {
-		for (i = 0; isxdigit (**strptr);) {
-			i <<= 4;
-			j = dasd_get_hexdigit (**strptr);
-			if (j == -1) {
-				PRINT_ERR ("no integer: skipping range.\n");
-				dasd_scan_for_next_comma (strptr);
-				i = -1;
-				break;
-			}
-			i += j;
-			(*strptr)++;
-			if (i > 0xffff) {
-				PRINT_ERR (" value too big, skipping range.\n");
-				dasd_scan_for_next_comma (strptr);
-				i = -1;
-				break;
-			}
-		}
-	}
-	return i;
-}
-
-int
-devindex_from_devno (int devno)
-{
-	int i;
-	if (dasd_probeonly) {
-		return 0;
-	}
-	for (i = 0; i < dasd_count; i++) {
-		if (dasd_devno[i] == devno)
-			return i;
-	}
-	if (dasd_autodetect) {
-		if (dasd_count < DASD_MAX_DEVICES) {
-			dasd_devno[dasd_count] = devno;
-			return dasd_count++;
-		}
-		return -EOVERFLOW;
-	}
-	return -ENODEV;
-}
-
-/* returns 1, if dasd_no is in the specified ranges, otherwise 0 */
-int
-dasd_is_accessible (int devno)
-{
-	return (devindex_from_devno (devno) >= 0);
-}
-
-/* dasd_insert_range skips ranges, if the start or the end is -1 */
-void
-dasd_insert_range (int start, int end)
-{
-	int curr;
-	if (dasd_count >= DASD_MAX_DEVICES) {
-		PRINT_ERR (" too many devices specified, ignoring some.\n");
-		return;
-	}
-	if ((start == -1) || (end == -1)) {
-		PRINT_ERR
-		    ("invalid format of parameter, skipping range\n");
-		return;
-	}
-	if (end < start) {
-		PRINT_ERR (" ignoring range from %x to %x - start value " \
-			   "must be less than end value.\n", start, end);
-		return;
-	}
-/* concurrent execution would be critical, but will not occur here */
-	for (curr = start; curr <= end; curr++) {
-		if (dasd_is_accessible (curr)) {
-			PRINT_WARN (" %x is already in list as device %d\n",
-				    curr, devindex_from_devno (curr));
-		}
-		dasd_devno[dasd_count] = curr;
-		dasd_count++;
-		if (dasd_count >= DASD_MAX_DEVICES) {
-			PRINT_ERR (" too many devices specified, ignoring some.\n");
-			break;
-		}
-	}
-	PRINT_INFO (" added dasd range from %x to %x.\n",
-		    start, dasd_devno[dasd_count - 1]);
-
-}
-
-void
-dasd_setup (char *str, int *ints)
-{
-	int devno, devno2;
-	static const char *adstring = "autodetect";
-	static const char *prstring = "probeonly";
-	if (!strncmp (str, prstring,
-		      MIN (strlen (str), strlen (prstring)))) {
-		dasd_autodetect = 1;
-		return;
-	}
-	if (!strncmp (str, adstring,
-		      MIN (strlen (str), strlen (adstring)))) {
-		dasd_autodetect = 1;
-		dasd_probeonly = 0;
-		return;
-	}
-	dasd_probeonly = 0;
-	while (*str && *str != 1) {
-		if (!isxdigit (*str)) {
-			str++;	/* to avoid looping on two commas */
-			PRINT_ERR (" kernel parameter in invalid format.\n");
-			continue;
-		}
-		devno = dasd_get_next_int (&str);
-
-		/* range was skipped? -> scan for comma has been done */
-		if (devno == -1)
-			continue;
-
-		if (*str == ',') {
-			str++;
-			dasd_insert_range (devno, devno);
-			continue;
-		}
-		if (*str == '-') {
-			str++;
-			devno2 = dasd_get_next_int (&str);
-			if (devno2 == -1) {
-				PRINT_ERR (" invalid character in " \
-					   "kernel parameters.");
-			} else {
-				dasd_insert_range (devno, devno2);
-			}
-			dasd_scan_for_next_comma (&str);
-			continue;
-		}
-		if (*str == 0) {
-			dasd_insert_range (devno, devno);
-			break;
-		}
-		PRINT_ERR (" unexpected character in kernel parameter, " \
-			   "skipping range.\n");
-	}
-}
-#ifdef CONFIG_DASD_MDSK
-int dasd_force_mdsk_flag[DASD_MAX_DEVICES];
-
-/*
- * Parameter parsing function, called from init/main.c
- * size    : size in kbyte
- * offset  : offset after which minidisk is available
- * blksize : blocksize minidisk is formated
- * Format is: mdisk=<vdev>,<vdev>,...
- */
-void
-dasd_mdsk_setup (char *str, int *ints)
-{
-	int devno, devno2;
-	int di, i;
-
-	while (*str && *str != 1) {
-		if (!isxdigit (*str)) {
-			str++;	/* to avoid looping on two commas */
-			PRINT_ERR (" kernel parameter in invalid format.\n");
-			continue;
-		}
-		devno = dasd_get_next_int (&str);
-
-		/* range was skipped? -> scan for comma has been done */
-		if (devno == -1)
-			continue;
-
-		if (*str == ',') {
-			str++;
-			di = devindex_from_devno (devno);
-			if (di >= DASD_MAX_DEVICES) {
-				return;
-			} else if (di < 0)
-				dasd_insert_range (devno, devno);
-			dasd_force_mdsk_flag[di] = 1;
-			continue;
-		}
-		if (*str == '-') {
-			str++;
-			devno2 = dasd_get_next_int (&str);
-			if (devno2 == -1) {
-				PRINT_ERR (" invalid character in " \
-					   "kernel parameters.");
-			} else {
-				for (i = devno; i <= devno2; i++) {
-					di = devindex_from_devno (i);
-					if (di >= DASD_MAX_DEVICES) {
-						return;
-					} else if (di < 0)
-						dasd_insert_range (i, i);
-					dasd_force_mdsk_flag[di] = 1;
-				}
-			}
-			dasd_scan_for_next_comma (&str);
-			continue;
-		}
-		if (*str == 0) {
-			di = devindex_from_devno (devno);
-			if (di >= DASD_MAX_DEVICES) {
-				return;
-			} else if (di < 0)
-				dasd_insert_range (devno, devno);
-			dasd_force_mdsk_flag[di] = 1;
-			break;
-		}
-		PRINT_ERR (" unexpected character in kernel parameter, " \
-			   "skipping range.\n");
-	}
-}
-#endif
-
-#ifdef MODULE
-int
-dasd_parse_module_params (void)
-{
-	while (dasd)
-		dasd_setup (dasd, NULL);
-#ifdef CONFIG_DASD_MDSK
-	while (dasd_force_mdsk)
-		dasd_mdsk_setup (dasd_force_mdsk, NULL);
-#endif
-}
-#endif