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sd_scsibus_get_parms():

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* Use the "block descriptor length" to find the beginning of the mode page
  data.  This is critical, since some devices do not return a block descriptor
  at all.  (XXX There is disgusting structure hackery here.)
* Always use scsipi_size() (i.e. READ CAPACITY) to get the total disk size.
* Get the rotational rate from the rigid geometry page.
* Don't read the block size from the block descriptor if there was none.
* Get the block size from the flexible geometry page if possible.
* If we don't like the way page 4 smells, try page 5, rather than just punting.
This commit is contained in:
mycroft 2003-09-05 00:28:55 +00:00
parent 2f2b9c7cb0
commit 8b228f0d42
1 changed files with 52 additions and 40 deletions
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92
sys/dev/scsipi/sd_scsi.c
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@ -1,7 +1,7 @@
/* $NetBSD: sd_scsi.c,v 1.28 2003/04/03 22:18:26 fvdl Exp $ */
/* $NetBSD: sd_scsi.c,v 1.29 2003/09/05 00:28:55 mycroft Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
@ -54,7 +54,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sd_scsi.c,v 1.28 2003/04/03 22:18:26 fvdl Exp $");
__KERNEL_RCSID(0, "$NetBSD: sd_scsi.c,v 1.29 2003/09/05 00:28:55 mycroft Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -313,7 +313,6 @@ sd_scsibus_get_parms(sd, dp, flags)
{
struct sd_scsibus_mode_sense_data scsipi_sense;
u_int64_t sectors;
int page;
int error;
dp->rot_rate = 3600; /* XXX any way of getting this? */
@ -328,15 +327,18 @@ sd_scsibus_get_parms(sd, dp, flags)
if (sd->type == T_SIMPLE_DIRECT)
return (sd_scsibus_get_simplifiedparms(sd, dp, flags));
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 4,
flags)) == 0) {
sectors = scsipi_size(sd->sc_periph, flags);
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, 4, flags)) == 0) {
union scsi_disk_pages *pages = (void *)(((u_int8_t *)&scsipi_sense.blk_desc) + scsipi_sense.header.blk_desc_len);
SC_DEBUG(sd->sc_periph, SCSIPI_DB3,
("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
_3btol(scsipi_sense.pages.rigid_geometry.ncyl),
scsipi_sense.pages.rigid_geometry.nheads,
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_wp),
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_rwc),
_2btol(scsipi_sense.pages.rigid_geometry.land_zone)));
_3btol(pages->rigid_geometry.ncyl),
pages->rigid_geometry.nheads,
_2btol(pages->rigid_geometry.st_cyl_wp),
_2btol(pages->rigid_geometry.st_cyl_rwc),
_2btol(pages->rigid_geometry.land_zone)));
/*
* KLUDGE!! (for zone recorded disks)
@ -344,61 +346,71 @@ sd_scsibus_get_parms(sd, dp, flags)
* is <= disk_size
* can lead to wasted space! THINK ABOUT THIS !
*/
dp->heads = scsipi_sense.pages.rigid_geometry.nheads;
dp->cyls = _3btol(scsipi_sense.pages.rigid_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
dp->heads = pages->rigid_geometry.nheads;
dp->cyls = _3btol(pages->rigid_geometry.ncyl);
dp->rot_rate = _2btol(pages->rigid_geometry.rpm);
if (dp->heads == 0 || dp->cyls == 0)
goto fake_it;
goto page5;
if (dp->rot_rate == 0)
dp->rot_rate = 3600;
if (dp->blksize == 0)
if (scsipi_sense.header.blk_desc_len >= 8) {
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
if (dp->blksize == 0)
dp->blksize = 512;
} else
dp->blksize = 512;
sectors = scsipi_size(sd->sc_periph, flags);
dp->disksize = sectors;
dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE;
sectors /= (dp->heads * dp->cyls);
dp->sectors = sectors; /* XXX dubious on SCSI */
dp->sectors = sectors / (dp->heads * dp->cyls); /* XXX */
printf("page 4 ok\n");
return (SDGP_RESULT_OK);
}
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 5,
flags)) == 0) {
dp->heads = scsipi_sense.pages.flex_geometry.nheads;
dp->cyls = _2btol(scsipi_sense.pages.flex_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
dp->sectors = scsipi_sense.pages.flex_geometry.ph_sec_tr;
dp->disksize = dp->heads * dp->cyls * dp->sectors;
if (dp->disksize == 0)
page5:
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, 5, flags)) == 0) {
union scsi_disk_pages *pages = (void *)(((u_int8_t *)&scsipi_sense.blk_desc) + scsipi_sense.header.blk_desc_len);
SC_DEBUG(sd->sc_periph, SCSIPI_DB3,
("%d cyls, %d heads, %d sec, %d bytes/sec\n",
_3btol(pages->flex_geometry.ncyl),
pages->flex_geometry.nheads,
pages->flex_geometry.ph_sec_tr,
_2btol(pages->flex_geometry.bytes_s)));
dp->heads = pages->flex_geometry.nheads;
dp->cyls = _2btol(pages->flex_geometry.ncyl);
dp->sectors = pages->flex_geometry.ph_sec_tr;
dp->blksize = _2btol(pages->flex_geometry.bytes_s);
if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0)
goto fake_it;
if (dp->blksize == 0)
dp->blksize = 512;
dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE;
dp->disksize = sectors;
dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE;
printf("page 5 ok\n");
return (SDGP_RESULT_OK);
}
fake_it:
if ((sd->sc_periph->periph_quirks & PQUIRK_NOMODESENSE) == 0) {
if (error == 0)
printf("%s: mode sense (%d) returned nonsense",
sd->sc_dev.dv_xname, page);
else
printf("%s: could not mode sense (4/5)",
sd->sc_dev.dv_xname);
printf("; using fictitious geometry\n");
}
if (sectors == 0)
return (SDGP_RESULT_OFFLINE); /* XXX? */
if ((sd->sc_periph->periph_quirks & PQUIRK_NOMODESENSE) == 0)
printf("%s: using fictitious geometry\n", sd->sc_dev.dv_xname);
/*
* use adaptec standard fictitious geometry
* this depends on which controller (e.g. 1542C is
* different. but we have to put SOMETHING here..)
*/
sectors = scsipi_size(sd->sc_periph, flags);
if (sectors == 0)
return (SDGP_RESULT_OFFLINE); /* XXX? */
dp->blksize = 512;
dp->disksize512 = dp->disksize = sectors;
/* Try calling driver's method for figuring out geometry. */