Below a patch of 2.5.67. It removes the file ide-geometry.c
and adds the boot option "hdb=remap63" that shifts all of hdb
by 63 sectors. (This is what the old code would do in case it
detected OnTrack disk manager.)
Please report.
Andries
-------------------------------------------------------------
diff -u --recursive --new-file -X /linux/dontdiff a/Documentation/ide.txt b/Documentation/ide.txt
--- a/Documentation/ide.txt Tue Mar 18 11:48:10 2003
+++ b/Documentation/ide.txt Wed Apr 16 14:50:15 2003
@@ -230,6 +230,10 @@
"hdx=cdrom" : drive is present, and is a cdrom drive
"hdx=cyl,head,sect" : disk drive is present, with specified geometry
+
+ "hdx=remap" : remap access of sector 0 to sector 1 (for EZD)
+
+ "hdx=remap63" : remap the drive: shift all by 63 sectors (for DM)
"hdx=autotune" : driver will attempt to tune interface speed
to the fastest PIO mode supported,
diff -u --recursive --new-file -X /linux/dontdiff a/drivers/ide/Makefile b/drivers/ide/Makefile
--- a/drivers/ide/Makefile Tue Mar 25 04:54:31 2003
+++ b/drivers/ide/Makefile Wed Apr 16 14:46:25 2003
@@ -12,7 +12,7 @@
# Core IDE code - must come before legacy
-obj-$(CONFIG_BLK_DEV_IDE) += ide-io.o ide-probe.o ide-geometry.o ide-iops.o ide-taskfile.o ide.o ide-lib.o ide-default.o
+obj-$(CONFIG_BLK_DEV_IDE) += ide-io.o ide-probe.o ide-iops.o ide-taskfile.o ide.o ide-lib.o ide-default.o
obj-$(CONFIG_BLK_DEV_IDEDISK) += ide-disk.o
obj-$(CONFIG_BLK_DEV_IDECD) += ide-cd.o
obj-$(CONFIG_BLK_DEV_IDETAPE) += ide-tape.o
diff -u --recursive --new-file -X /linux/dontdiff a/drivers/ide/ide-geometry.c b/drivers/ide/ide-geometry.c
--- a/drivers/ide/ide-geometry.c Tue Mar 25 04:54:31 2003
+++ b/drivers/ide/ide-geometry.c Thu Jan 1 01:00:00 1970
@@ -1,135 +0,0 @@
-/*
- * linux/drivers/ide/ide-geometry.c
- */
-#include <linux/config.h>
-#include <linux/ide.h>
-#include <linux/mc146818rtc.h>
-#include <asm/io.h>
-
-extern unsigned long current_capacity (ide_drive_t *);
-
-/*
- * If heads is nonzero: find a translation with this many heads and S=63.
- * Otherwise: find out how OnTrack Disk Manager would translate the disk.
- */
-
-static void ontrack(ide_drive_t *drive, int heads, unsigned int *c, int *h, int *s)
-{
- static const u8 dm_head_vals[] = {4, 8, 16, 32, 64, 128, 255, 0};
- const u8 *headp = dm_head_vals;
- unsigned long total;
-
- /*
- * The specs say: take geometry as obtained from Identify,
- * compute total capacity C*H*S from that, and truncate to
- * 1024*255*63. Now take S=63, H the first in the sequence
- * 4, 8, 16, 32, 64, 128, 255 such that 63*H*1024 >= total.
- * [Please tell aeb@cwi.nl in case this computes a
- * geometry different from what OnTrack uses.]
- */
- total = DRIVER(drive)->capacity(drive);
-
- *s = 63;
-
- if (heads) {
- *h = heads;
- *c = total / (63 * heads);
- return;
- }
-
- while (63 * headp[0] * 1024 < total && headp[1] != 0)
- headp++;
- *h = headp[0];
- *c = total / (63 * headp[0]);
-}
-
-/*
- * This routine is called from the partition-table code in pt/msdos.c.
- * It has two tasks:
- * (i) to handle Ontrack DiskManager by offsetting everything by 63 sectors,
- * or to handle EZdrive by remapping sector 0 to sector 1.
- * (ii) to invent a translated geometry.
- * Part (i) is suppressed if the user specifies the "noremap" option
- * on the command line.
- * Part (ii) is suppressed if the user specifies an explicit geometry.
- *
- * The ptheads parameter is either 0 or tells about the number of
- * heads shown by the end of the first nonempty partition.
- * If this is either 16, 32, 64, 128, 240 or 255 we'll believe it.
- *
- * The xparm parameter has the following meaning:
- * 0 = convert to CHS with fewer than 1024 cyls
- * using the same method as Ontrack DiskManager.
- * 1 = same as "0", plus offset everything by 63 sectors.
- * -1 = similar to "0", plus redirect sector 0 to sector 1.
- * 2 = convert to a CHS geometry with "ptheads" heads.
- *
- * Returns 0 if the translation was not possible, if the device was not
- * an IDE disk drive, or if a geometry was "forced" on the commandline.
- * Returns 1 if the geometry translation was successful.
- */
-
-int ide_xlate_1024 (struct block_device *bdev, int xparm, int ptheads, const char *msg)
-{
- ide_drive_t *drive = bdev->bd_disk->private_data;
- const char *msg1 = "";
- int heads = 0;
- int c, h, s;
- int transl = 1; /* try translation */
- int ret = 0;
-
- /* remap? */
- if (drive->remap_0_to_1 != 2) {
- if (xparm == 1) { /* DM */
- drive->sect0 = 63;
- msg1 = " [remap +63]";
- ret = 1;
- } else if (xparm == -1) { /* EZ-Drive */
- if (drive->remap_0_to_1 == 0) {
- drive->remap_0_to_1 = 1;
- msg1 = " [remap 0->1]";
- ret = 1;
- }
- }
- }
-
- /* There used to be code here that assigned drive->id->CHS
- to drive->CHS and that to drive->bios_CHS. However,
- some disks have id->C/H/S = 4092/16/63 but are larger than 2.1 GB.
- In such cases that code was wrong. Moreover,
- there seems to be no reason to do any of these things. */
-
- /* translate? */
- if (drive->forced_geom)
- transl = 0;
-
- /* does ptheads look reasonable? */
- if (ptheads == 32 || ptheads == 64 || ptheads == 128 ||
- ptheads == 240 || ptheads == 255)
- heads = ptheads;
-
- if (xparm == 2) {
- if (!heads ||
- (drive->bios_head >= heads && drive->bios_sect == 63))
- transl = 0;
- }
- if (xparm == -1) {
- if (drive->bios_head > 16)
- transl = 0; /* we already have a translation */
- }
-
- if (transl) {
- ontrack(drive, heads, &c, &h, &s);
- drive->bios_cyl = c;
- drive->bios_head = h;
- drive->bios_sect = s;
- ret = 1;
- }
-
- set_capacity(drive->disk, current_capacity(drive));
-
- if (ret)
- printk("%s%s [%d/%d/%d]", msg, msg1,
- drive->bios_cyl, drive->bios_head, drive->bios_sect);
- return ret;
-}
diff -u --recursive --new-file -X /linux/dontdiff a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
--- a/drivers/ide/ide-probe.c Tue Mar 25 04:54:31 2003
+++ b/drivers/ide/ide-probe.c Wed Apr 16 14:46:25 2003
@@ -1442,8 +1442,6 @@
}
#ifdef MODULE
-extern int (*ide_xlate_1024_hook)(struct block_device *, int, int, const char *);
-
int init_module (void)
{
unsigned int index;
@@ -1452,14 +1450,12 @@
ide_unregister(index);
ideprobe_init();
create_proc_ide_interfaces();
- ide_xlate_1024_hook = ide_xlate_1024;
return 0;
}
void cleanup_module (void)
{
ide_probe = NULL;
- ide_xlate_1024_hook = 0;
}
MODULE_LICENSE("GPL");
#endif /* MODULE */
diff -u --recursive --new-file -X /linux/dontdiff a/drivers/ide/ide.c b/drivers/ide/ide.c
--- a/drivers/ide/ide.c Tue Apr 8 09:36:37 2003
+++ b/drivers/ide/ide.c Wed Apr 16 14:46:25 2003
@@ -1711,6 +1711,8 @@
* "hdx=nowerr" : ignore the WRERR_STAT bit on this drive
* "hdx=cdrom" : drive is present, and is a cdrom drive
* "hdx=cyl,head,sect" : disk drive is present, with specified geometry
+ * "hdx=remap63" : add 63 to all sector numbers (for OnTrack DM)
+ * "hdx=remap" : remap 0->1 (for EZDrive)
* "hdx=noremap" : do not remap 0->1 even though EZD was detected
* "hdx=autotune" : driver will attempt to tune interface speed
* to the fastest PIO mode supported,
@@ -1830,11 +1832,11 @@
* Look for drive options: "hdx="
*/
if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
- const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom",
- "serialize", "autotune", "noautotune",
- "slow", "swapdata", "bswap", "flash",
- "remap", "noremap", "scsi", "biostimings",
- NULL};
+ const char *hd_words[] = {
+ "none", "noprobe", "nowerr", "cdrom", "serialize",
+ "autotune", "noautotune", "slow", "swapdata", "bswap",
+ "flash", "remap", "noremap", "scsi", "biostimings",
+ "remap63", NULL };
unit = s[2] - 'a';
hw = unit / MAX_DRIVES;
unit = unit % MAX_DRIVES;
@@ -1884,8 +1886,8 @@
case -8: /* "slow" */
drive->slow = 1;
goto done;
- case -9: /* "swapdata" or "bswap" */
- case -10:
+ case -9: /* "swapdata" */
+ case -10: /* "bswap" */
drive->bswap = 1;
goto done;
case -11: /* "flash" */
@@ -1908,6 +1910,9 @@
case -15: /* "biostimings" */
drive->autotune = IDE_TUNE_BIOS;
goto done;
+ case -16: /* "remap63" */
+ drive->sect0 = 63;
+ goto done;
case 3: /* cyl,head,sect */
drive->media = ide_disk;
drive->cyl = drive->bios_cyl = vals[0];
diff -u --recursive --new-file -X /linux/dontdiff a/fs/partitions/msdos.c b/fs/partitions/msdos.c
--- a/fs/partitions/msdos.c Mon Feb 24 23:02:56 2003
+++ b/fs/partitions/msdos.c Wed Apr 16 14:46:25 2003
@@ -20,27 +20,15 @@
*/
#include <linux/config.h>
-#include <linux/buffer_head.h> /* for invalidate_bdev() */
-
-#ifdef CONFIG_BLK_DEV_IDE
-#include <linux/hdreg.h>
-#include <linux/ide.h> /* IDE xlate */
-#elif defined(CONFIG_BLK_DEV_IDE_MODULE)
-#include <linux/module.h>
-
-int (*ide_xlate_1024_hook)(struct block_device *, int, int, const char *);
-EXPORT_SYMBOL(ide_xlate_1024_hook);
-#define ide_xlate_1024 ide_xlate_1024_hook
-#endif
#include "check.h"
#include "msdos.h"
#include "efi.h"
/*
- * Many architectures don't like unaligned accesses, which is
- * frequently the case with the nr_sects and start_sect partition
- * table entries.
+ * Many architectures don't like unaligned accesses, while
+ * the nr_sects and start_sect partition table entries are
+ * at a 2 (mod 4) address.
*/
#include <asm/unaligned.h>
diff -u --recursive --new-file -X /linux/dontdiff a/include/linux/ide.h b/include/linux/ide.h
--- a/include/linux/ide.h Tue Mar 25 04:54:45 2003
+++ b/include/linux/ide.h Wed Apr 16 14:46:25 2003
@@ -1317,12 +1317,6 @@
extern int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
/*
- * This routine is called from the partition-table code in genhd.c
- * to "convert" a drive to a logical geometry with fewer than 1024 cyls.
- */
-extern int ide_xlate_1024(struct block_device *, int, int, const char *);
-
-/*
* Return the current idea about the total capacity of this drive.
*/
extern unsigned long current_capacity (ide_drive_t *drive);
-
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