It seems Takahashi Yoshihiro wrote:
> In article <[EMAIL PROTECTED]>
> [EMAIL PROTECTED] writes:
>
> > Is it only for ATA/IDE disks ?
> > Does it depend on the size of the disks ?
>
> Only for the internal IDE controller. The internal IDE controller on
> pc98 uses the fixed geometry which is 8 heads and 17 sectors. If the
> size of the disk is larger than 4.2GB (65535C x 8H x 17S x 512B), a
> different geometry depend on the disk is used.
OK, could you try this patch then (and probably still rip out the
stuff in GEOM)...
Index: ata-all.h
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/ata-all.h,v
retrieving revision 1.55
diff -u -r1.55 ata-all.h
--- ata-all.h 3 Dec 2002 20:19:37 -0000 1.55
+++ ata-all.h 17 Dec 2002 14:29:12 -0000
@@ -213,9 +213,10 @@
int flags; /* controller flags */
#define ATA_NO_SLAVE 0x01
#define ATA_USE_16BIT 0x02
-#define ATA_ATAPI_DMA_RO 0x04
-#define ATA_QUEUED 0x08
-#define ATA_DMA_ACTIVE 0x10
+#define ATA_USE_PC98GEOM 0x04
+#define ATA_ATAPI_DMA_RO 0x08
+#define ATA_QUEUED 0x10
+#define ATA_DMA_ACTIVE 0x20
struct ata_device device[2]; /* devices on this channel */
#define MASTER 0x00
Index: ata-cbus.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/ata-cbus.c,v
retrieving revision 1.1
diff -u -r1.1 ata-cbus.c
--- ata-cbus.c 3 Dec 2002 20:19:37 -0000 1.1
+++ ata-cbus.c 17 Dec 2002 14:28:21 -0000
@@ -239,7 +239,7 @@
ch->unit = i;
}
free(children, M_TEMP);
- ch->flags |= ATA_USE_16BIT;
+ ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM;
ch->intr_func = ata_cbus_intr;
ch->lock_func = ata_cbus_banking;
return ata_probe(dev);
Index: ata-disk.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/ata-disk.c,v
retrieving revision 1.138
diff -u -r1.138 ata-disk.c
--- ata-disk.c 6 Dec 2002 19:29:53 -0000 1.138
+++ ata-disk.c 17 Dec 2002 14:34:27 -0000
@@ -124,6 +124,11 @@
adp->sectors = atadev->param->sectors;
adp->total_secs = atadev->param->cylinders * adp->heads * adp->sectors;
adp->max_iosize = 256 * DEV_BSIZE;
+ if (adp->device->channel->flags & ATA_USE_PC98GEOM &&
+ adp->total_secs < 17 * 8 * 65536) {
+ adp->sectors = 17;
+ adp->heads = 8;
+ }
bioq_init(&adp->queue);
lbasize = (u_int32_t)atadev->param->lba_size_1 |
-Søren
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