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OS/2 Shareware BBS: 10 Tools
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aspio02.zip
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modesense.c
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C/C++ Source or Header
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1999-08-17
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135 lines
/*
* $Source: r:/source/aspi/RCS/modesense.c,v $
* $Revision: 1.4 $
* $Date: 1999/08/18 00:13:03 $
* $Locker: $
*
* ASPI Interface Library, MODE SENSE
*
* $Log: modesense.c,v $
* Revision 1.4 1999/08/18 00:13:03 vitus
* - updated location of defines.h (moved)
* - changed function comments to new layout
*
* Revision 1.3 1997/09/22 02:25:22 vitus
* commented
*
* Revision 1.2 1997/09/18 01:35:32 vitus
* allocate srb from heap
* mode sense (6 or 10) depending on data size
*
* Revision 1.1 1997/09/08 02:56:05 vitus
* Initial revision
* ----------------------------------------
* Sample code to demonstrate use of ASPI Interface.
*/
static char const id[]="$Id: modesense.c,v 1.4 1999/08/18 00:13:03 vitus Exp $";
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#define INCL_DOS
#define INCL_ERRORS
#include <os2.h>
#include "../lib/defines.h"
#include "scsi.h"
#include "srb.h"
#include "aspio.h"
/*# ----------------------------------------------------------------------
* AspiModeSense(ha,target,lun,page,which,buf,bufsiz)
*
* PARAMETER
* ha,target,lun addresses device
* page mode page to read
* which 0 = current values
* buf,bufsiz mode pages plus header
*
* RETURNS
* APIRET
*
* GLOBAL
* strLastSense updated
*
* DESPRIPTION
* Uses MODE SENSE(6 or 10) to read one or all mode pages.
*
* REMARKS
* See SCSI spec for format of mode pages.
*/
PUBLIC APIRET _System
AspiModeSense(UCHAR ha,UCHAR target,UCHAR lun,
UCHAR page,UCHAR which,PVOID buf,ULONG bufsiz)
{
APIRET rc;
size_t const srbsize = sizeof(ASPI_SRB_EXECUTE_IO)
+ (bufsiz > 255 ? 10 : 6)
+ sizeof(SCSI_REQSENSE_DATA);
PASPI_SRB_EXECUTE_IO srb = malloc(srbsize);
if( srb == NULL )
return ERROR_NOT_ENOUGH_MEMORY;
memset(srb, 0, srbsize);
srb->SRBHdr.CommandCode = ASPI_CMD_EXECUTE_IO;
srb->SRBHdr.AdapterIndex = ha;
srb->SRBHdr.ASPIReqFlags = ASPI_REQFLAG_DIR_TO_HOST | ASPI_REQFLAG_POST_ENABLE;
srb->DeviceTargetID = target;
srb->DeviceTargetLUN = lun;
srb->DataXferLen = bufsiz;
srb->pDataBuffer = buf;
srb->SenseDataLen = sizeof(SCSI_REQSENSE_DATA);
assert( page <= 0x3F );
assert( which <= 0x03 );
if( bufsiz > 255 )
{
srb->CDBLen = 10;
srb->CDB[0] = SCSI_MODE_SENSE_10;
srb->CDB[1] = (lun << 5) | 0x00;
srb->CDB[2] = (which << 6) | page;
srb->CDB[3] = 0;
srb->CDB[4] = 0;
srb->CDB[5] = 0;
srb->CDB[6] = 0;
srb->CDB[7] = HIUCHAR((USHORT)bufsiz);
srb->CDB[8] = LOUCHAR((USHORT)bufsiz);
srb->CDB[9] = 0;
}
else
{
srb->CDBLen = 6;
srb->CDB[0] = SCSI_MODE_SENSE;
srb->CDB[1] = (lun << 5) | 0x00;
srb->CDB[2] = (which << 6) | page;
srb->CDB[3] = 0;
srb->CDB[4] = (UCHAR)bufsiz;
srb->CDB[5] = 0;
}
rc = AspiSendSRB(&srb->SRBHdr, srbsize);
if( rc == 0 )
{
if( srb->TargetStatus != ASPI_TSTATUS_NO_ERROR )
rc = 0xF2000000 | srb->TargetStatus;
else if( srb->HostStatus != ASPI_HSTATUS_NO_ERROR )
rc = 0xF1000000 | srb->HostStatus;
else if( srb->SRBHdr.ASPIStatus != ASPI_STATUS_NO_ERROR )
rc = 0xF0000000 | srb->SRBHdr.ASPIStatus;
memcpy(&strLastSense,
&srb->CDB[bufsiz > 255 ? 10 : 6],
sizeof(SCSI_REQSENSE_DATA));
}
free(srb);
return rc;
}