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/* $OpenBSD: sd_atapi.c,v 1.9 2005/06/03 15:50:10 krw Exp $ */
/* $NetBSD: sd_atapi.c,v 1.3 1998/08/31 22:28:07 cgd Exp $ */
/*
* Copyright 1998
* Digital Equipment Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and conditions.
* Subject to these conditions, you may download, copy, install,
* use, modify and distribute this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions as
* they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
* Digital Equipment Corporation. Neither the "Digital Equipment
* Corporation" name nor any trademark or logo of Digital Equipment
* Corporation may be used to endorse or promote products derived
* from this software without the prior written permission of
* Digital Equipment Corporation.
*
* 3) This software is provided "AS-IS" and any express or implied
* warranties, including but not limited to, any implied warranties
* of merchantability, fitness for a particular purpose, or
* non-infringement are disclaimed. In no event shall DIGITAL be
* liable for any damages whatsoever, and in particular, DIGITAL
* shall not be liable for special, indirect, consequential, or
* incidental damages or damages for lost profits, loss of
* revenue or loss of use, whether such damages arise in contract,
* negligence, tort, under statute, in equity, at law or otherwise,
* even if advised of the possibility of such damage.
*/
/*
* ATAPI disk attachment for the 'sd' driver.
*
* Chris Demetriou, January 10, 1998.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <sys/conf.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>
#include <scsi/atapi_disk.h>
#include <scsi/sdvar.h>
static int sd_atapibus_get_parms(struct sd_softc *,
struct disk_parms *, int);
const struct sd_ops sd_atapibus_ops = {
sd_atapibus_get_parms,
};
static int
sd_atapibus_get_parms(sd, dp, flags)
struct sd_softc *sd;
struct disk_parms *dp;
int flags;
{
struct atapi_read_format_capacities scsi_cmd;
struct atapi_capacity_descriptor *descp;
struct scsi_mode_sense_buf sense_data;
union scsi_disk_pages *sense_pages = NULL;
char capacity_data[ATAPI_CAP_DESC_SIZE(1)];
u_int16_t rpm;
int error;
bzero(&scsi_cmd, sizeof scsi_cmd);
scsi_cmd.opcode = ATAPI_READ_FORMAT_CAPACITIES;
_lto2b(ATAPI_CAP_DESC_SIZE(1), scsi_cmd.length);
error = scsi_scsi_cmd(sd->sc_link,
(struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd),
(void *)capacity_data, ATAPI_CAP_DESC_SIZE(1), SDRETRIES, 20000,
NULL, flags | SCSI_DATA_IN);
SC_DEBUG(sd->sc_link, SDEV_DB2,
("sd_atapibus_get_parms: read format capacities error=%d\n",
error));
if (error != 0)
return (SDGP_RESULT_OFFLINE);
descp = (struct atapi_capacity_descriptor *)
&capacity_data[ATAPI_CAP_DESC_OFFSET_DESC(0)];
switch (descp->byte5 & ATAPI_CAP_DESC_CODE_MASK) {
case ATAPI_CAP_DESC_CODE_UNFORMATTED:
return SDGP_RESULT_UNFORMATTED;
case ATAPI_CAP_DESC_CODE_FORMATTED:
break;
case ATAPI_CAP_DESC_CODE_NONE:
return SDGP_RESULT_OFFLINE;
default:
#ifdef DIAGNOSTIC
printf("%s: strange capacity descriptor byte5 0x%x\n",
sd->sc_dev.dv_xname, (u_int)descp->byte5);
#endif
break;
}
dp->disksize = _4btol(descp->nblks);
if (dp->disksize == 0)
return (SDGP_RESULT_OFFLINE);
dp->blksize = _3btol(descp->blklen);
error = scsi_do_mode_sense(sd->sc_link, ATAPI_FLEX_GEOMETRY_PAGE,
&sense_data, (void **)&sense_pages, NULL, NULL, NULL,
sizeof(sense_pages->flex_geometry), flags | SCSI_SILENT, NULL);
if (error == 0 && sense_pages) {
dp->heads = sense_pages->flex_geometry.nheads;
dp->sectors = sense_pages->flex_geometry.ph_sec_tr;
dp->cyls = _2btol(sense_pages->flex_geometry.ncyl);
if (dp->blksize == 0)
dp->blksize =
_2btol(sense_pages->flex_geometry.bytes_s);
rpm = _2btol(sense_pages->flex_geometry.rpm);
if (rpm)
dp->rot_rate = rpm;
}
/*
* Use standard fake values if MODE SENSE did not provide better ones.
*/
if (dp->rot_rate == 0)
dp->rot_rate = 3600;
if (dp->blksize == 0)
dp->blksize = 512;
if (dp->heads == 0)
dp->heads = 64;
if (dp->sectors == 0)
dp->sectors = 32;
if (dp->cyls == 0)
dp->cyls = dp->disksize / (dp->heads * dp->sectors);
return (SDGP_RESULT_OK);
}
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