Storage Device Driver Reference: Difference between revisions
| Line 75: | Line 75: | ||
==[[CD-ROM Device Driver Test Tool]]== | ==[[CD-ROM Device Driver Test Tool]]== | ||
== Building an OS/2 Virtual Disk Driver | ==[[Building an OS/2 Virtual Disk Driver]]== | ||
==[[OS2DASD.DMD - Technical Reference]]== | ==[[OS2DASD.DMD - Technical Reference]]== | ||
Revision as of 01:08, 1 February 2017
By IBM
Reprint Courtesy of International Business Machines Corporation, © International Business Machines Corporation
About This Book
The Storage Device Driver Reference provides a simplified programming interface to expedite the development of DASD, SCSI, and CD-ROM device driver support for the IBM OS/2 product.
Frequently, original equipment manufacturers (OEMs) develop device support to drive only their own unique device interfaces and the support may be hardware-dependent. The programming interfaces described in this reference categorize the DASD, SCSI, and CD-ROM device-driver modules as hardware-dependent or hardware-independent. Hardware-independent modules can be linked dynamically with hardware-dependent modules for a given workstation configuration.
Summary of Changes
The following changes have been made:
- Added a new chapter, Optical IOCtl Device Driver Test Tool.
- Removed chapters on Device Driver Test Tools, which described the 16-bit support: DASD IOCtl, DASD ADD, SCSI IOCtl, SCSI ADD, and CD-ROM.
- Added replacement chapters, describing the 32-bit support, for DASD IOCtl and CD-ROM Device Driver Test Tools.
How This Book is Organized
- #Notices contains trademark and service mark notices and information.
- Introduction to DASD, SCSI, and CD-ROM Programming Interfaces introduces the OS/2 DASD,SCSI, and CD-ROM programming interfaces for OEM device support, and describes what they are and what they are not. It shows the organization of the code, and presents various types of device drivers, device managers, adapter device drivers, and filter device drivers.
- Installation of OS/2, DASD, SCSI, and CD-ROM Device Drivers describes key design points and the strategies for addressing them. The BASEDEV keyword, introduced in OS/2 2.0, is described. This chapter describes system and adapter device driver installations along with the presence-check function.
- Adapter Device Driver Development Considerations covers pertinent considerations when developing adapter device drivers, such as loading, initialization, and operation.
- DASD, SCSI, and CD-ROM Device Manager Interface Specification presents the Direct Call Commands used with the DASD, SCSI, and CD-ROM device manager interface specification and the available device helpers (DevHlps). It covers I/O request blocks (IORBs) and their configuration, along with detailed descriptions of command codes, command modifiers, control blocks, and data structures.
- Error Handling contains a summary of all the adapter device driver error codes and guidelines for their usage.
- Adapter Device Driver Command-Line Parameters presents the adapter device driver command-line parameters and structures, including syntax conventions and specific parameter information for the various bus interfaces.
- DASD IOCtl Device Driver Test Tool discusses the DASD IOCtl Functional Verification Tests (FVTs) that exercise the Application Program Interfaces (APIs) defined for the DosDevIOCtl interface of DASD drivers. These tests are implemented with the Device Driver Test Tool.
- Optical IOCtl Device Driver Test Tool discusses the optical IOCtl Functional Verification Tests (FVTs) that exercise the Application Program Interfaces (APIs) defined for optical device drivers. The tests are implemented with the Device Driver Test Tool.
- Using Filter Device Drivers presents filter device drivers and the strategies for providing filter functions.
- Library and Services provides a complement of library services for common adapter device driver tasks.
- CD-ROM Device Manager Interface Specification provides CD-ROM specific device driver support information.
- CD-ROM Device Driver Test Tool discusses the Application Program Interfaces (APIs) defined for the interface of CD-ROM drivers.
- Building an OS/2 Virtual Disk Driver describes how to program and build an OS/2 virtual disk driver.
- OS2DASD.DMD - Technical Reference describes how the OS2DASD Manager provides support for fixed and removable magnetic disks.
- Boot Record Architecture describes how to install, create, and delete block devices in the Extended DOS partition. This appendix also discuss BIOS Parameter Blocks and Get Device Parameters for Extended Volumes.
- Extended Device Driver Interface Specification describes the supports for servicing fixed disk devices.
- I/O Request Block - C Definitionslists the I/O request block C language definitions for adapter device driver device support.
- OS/2 SCSI Device Driver Interface Specification describes the high-level interface for the SCSI device driver for OS/2. All functions are listed.
- Advanced SCSI Programming Interface (ASPI) OS/2 Specification describes the advanced SCSI programming interface (ASPI) OS/2 specification. The information was provided by Adaptec Corporation.
- Adapter Device Driver Interface Questions and Answers covers the most commonly asked questions about adapter device driver interfaces. The answers are presented in detail.
- Device Driver Test Tool (DDTT) describes how to use the Device Driver Test Tool in different environments.
A glossary and an index appear at the back of the book.
Assistance
Technical support for device driver development is provided by the IBM Driver Development Support Center (DDSC) through a bulletin board system (BBS). You are encouraged to use the DDSC to obtain support by sending in your questions and reviewing the question and answer database which can be downloaded for off-line review.
To access the DDSC, dial 512-838-9717 (using a modem) to register and access the support system. For voice support in the United States, call 512-838-9493.
Additional assistance is available through the IBM Solution Developer Program. For membership information:
- Internet: ibmsdp@vnet.ibm.com
- US/Canada: 800-627-8363
- International: 770-835-9902
- International Fax: 770-835-9444
Introduction to DASD, SCSI, and CD-ROM Programming Interfaces
Installation of OS/2, DASD, SCSI, and CD-ROM Device Drivers
Adapter Device Driver Development Considerations
DASD, SCSI, and CD-ROM Device Manager Interface Specification
Error Handling
Adapter Device Driver Command-Line Parameters
DASD IOCtl Device Driver Test Tool
Optical IOCtl Device Driver Test Tool
Using Filter Device Drivers
Library and Services
CD-ROM Device Manager Interface Specification
CD-ROM Device Driver Test Tool
Building an OS/2 Virtual Disk Driver
OS2DASD.DMD - Technical Reference
Boot Record Architecture
Extended Device Driver Interface Specification
I/O Request Block - C Definitions
Following are the I/O request block C language definitions for ADD device support.
/*static char *SCCSID = "@(#)iorb.h 6.2 92/02/20";*/
/****************************************************************************/
/* I/O Request Block (IORB) Structures */
/****************************************************************************/
/* ASM
Resolve H2INC references for .INC version of file
include iorbtype.inc
*/
/* Typedefs to resolve forward references */
typedef struct _IORBH IORBH;
typedef struct _IORBH FAR *PIORBH;
typedef struct _IORBH *NPIORBH;
typedef struct _IORBH FAR *PIORB;
typedef struct _IORBH *NPIORB;
typedef struct _DEVICETABLE DEVICETABLE;
typedef struct _DEVICETABLE FAR *PDEVICETABLE;
typedef struct _DEVICETABLE *NPDEVICETABLE;
typedef struct _UNITINFO UNITINFO;
typedef struct _UNITINFO FAR *PUNITINFO;
typedef struct _UNITINFO *NPUNITINFO;
typedef struct _ADAPTERINFO ADAPTERINFO;
typedef struct _ADAPTERINFO FAR *PADAPTERINFO;
typedef struct _ADAPTERINFO *NPADAPTERINFO;
typedef struct _GEOMETRY GEOMETRY;
typedef struct _GEOMETRY FAR *PGEOMETRY;
typedef struct _GEOMETRY *NPGEOMETRY;
typedef struct _SCATGATENTRY SCATGATENTRY;
typedef struct _SCATGATENTRY FAR *PSCATGATENTRY;
typedef struct _SCATGATENTRY *NPSCATGATENTRY;
/*--------------------------------------------------------------------------*/
/* Interface for calling ADD entry point */
/*--------------------------------------------------------------------------*/
/* VOID FAR *(ADDEP) (PIORBH); */
/*--------------------------------------------------------------------------*/
/* IORB Header */
/*--------------------------------------------------------------------------*/
#define DM_WORKSPACE_SIZE 20
#define ADD_WORKSPACE_SIZE 16
typedef struct _IORBH { /* IOH */
USHORT Length; /* IORB length */
USHORT UnitHandle; /* Unit identifier */
USHORT CommandCode; /* Command code */
USHORT CommandModifier; /* Command modifier */
USHORT RequestControl; /* Request control flags */
USHORT Status; /* Status */
USHORT ErrorCode; /* Error code */
ULONG Timeout; /* Cmd completion timeout(s) */
USHORT StatusBlockLen; /* Status block length */
NPBYTE pStatusBlock; /* Status block */
USHORT Reserved_1; /* Reserved, MBZ */
PIORB pNxtIORB; /* Pointer to next IORB */
PIORB (FAR *NotifyAddress)(PIORB); /* Notification address */
UCHAR DMWorkSpace[DM_WORKSPACE_SIZE]; /* For use by DM */
UCHAR ADDWorkSpace[ADD_WORKSPACE_SIZE]; /* For use by ADD */
} IORBH;
/*--------------------------------------------------------------------------*/
/* IORB CommandCode and CommandModifier Codes */
/* Note: CommandCodes are prefixed by IOCC and CommandModifiers */
/* by IOCM. */
/*--------------------------------------------------------------------------*/
/*--------------------------------*/
/* +----M=Mandatory support */
/* | O=Optional support */
/* | */
/* V Notes */
/*--------------------------------*/
#define IOCC_CONFIGURATION 0x0001 /* */
#define IOCM_GET_DEVICE_TABLE 0x0001 /* M */
#define IOCM_COMPLETE_INIT 0x0002 /* O */
/*----------------------------------------*/
#define IOCC_UNIT_CONTROL 0x0002 /* */
#define IOCM_ALLOCATE_UNIT 0x0001 /* M */
#define IOCM_DEALLOCATE_UNIT 0x0002 /* M */
#define IOCM_CHANGE_UNITINFO 0x0003 /* M */
/*----------------------------------------*/
#define IOCC_GEOMETRY 0x0003 /* */
#define IOCM_GET_MEDIA_GEOMETRY 0x0001 /* M */
#define IOCM_SET_MEDIA_GEOMETRY 0x0002 /* O (M) >1 media type */
#define IOCM_GET_DEVICE_GEOMETRY 0x0003 /* M */
#define IOCM_SET_LOGICAL_GEOMETRY 0x0004 /* O (M) CHS addressable */
/*----------------------------------------*/
#define IOCC_EXECUTE_IO 0x0004 /* */
#define IOCM_READ 0x0001 /* M */
#define IOCM_READ_VERIFY 0x0002 /* M */
#define IOCM_READ_PREFETCH 0x0003 /* O */
#define IOCM_WRITE 0x0004 /* M */
#define IOCM_WRITE_VERIFY 0x0005 /* M */
/*----------------------------------------*/
#define IOCC_FORMAT 0x0005 /* */
#define IOCM_FORMAT_MEDIA 0x0001 /* O (M) If HW requires */
#define IOCM_FORMAT_TRACK 0x0002 /* O (M) If HW requires */
#define IOCM_FORMAT_PROGRESS 0x0003 /* O */
#define IOCC_UNIT_STATUS 0x0006 /* */
#define IOCM_GET_UNIT_STATUS 0x0001 /* M */
#define IOCM_GET_CHANGELINE_STATE 0x0002 /* O (Mandatory for diskette) */
#define IOCM_GET_MEDIA_SENSE 0x0003 /* O (Mandatory for diskette) */
#define IOCM_GET_LOCK_STATUS 0x0004 /* M */
/*----------------------------------------*/
#define IOCC_DEVICE_CONTROL 0x0007 /* */
#define IOCM_ABORT 0x0001 /* O (M) SCSI */
#define IOCM_RESET 0x0002 /* O (M) SCSI */
#define IOCM_SUSPEND 0x0003 /* O (M) Floppy driver */
#define IOCM_RESUME 0x0004 /* O (M) Floppy driver */
#define IOCM_LOCK_MEDIA 0x0005 /* M (O) Fixed media only */
#define IOCM_UNLOCK_MEDIA 0x0006 /* M (O) Fixed media only */
#define IOCM_EJECT_MEDIA 0x0007 /* M (O) SCSI and Floppy Driver */
/*----------------------------------------*/
#define IOCC_ADAPTER_PASSTHRU 0x0008 /* */
#define IOCM_EXECUTE_SCB 0x0001 /* O */
#define IOCM_EXECUTE_CDB 0x0002 /* O (M) SCSI adapters */
/*----------------------------------------*/
#define MAX_IOCC_COMMAND IOCC_ADAPTER_PASSTHRU
/*--------------------------------------------------------------------------*/
/* Status flags returned in IORBH->Status */
/*--------------------------------------------------------------------------*/
#define IORB_DONE 0x0001 /* 1=Done, 0=In progress */
#define IORB_ERROR 0x0002 /* 1=Error, 0=No error */
#define IORB_RECOV_ERROR 0x0004 /* Recovered error */
#define IORB_STATUSBLOCK_AVAIL 0x0008 /* Status block available */
/*--------------------------------------------------------------------------*/
/* Error Codes returned in IORBH->ErrorCode */
/*--------------------------------------------------------------------------*/
#define IOERR_RETRY 0x8000
#define IOERR_CMD 0x0100
#define IOERR_CMD_NOT_SUPPORTED IOERR_CMD+1
#define IOERR_CMD_SYNTAX IOERR_CMD+2
#define IOERR_CMD_SGLIST_BAD IOERR_CMD+3
#define IOERR_CMD_SW_RESOURCE IOERR_CMD+IOERR_RETRY+4
#define IOERR_CMD_ABORTED IOERR_CMD+5
#define IOERR_CMD_ADD_SOFTWARE_FAILURE IOERR_CMD+6
#define IOERR_CMD_OS_SOFTWARE_FAILURE IOERR_CMD+7
#define IOERR_UNIT 0x0200
#define IOERR_UNIT_NOT_ALLOCATED IOERR_UNIT+1
#define IOERR_UNIT_ALLOCATED IOERR_UNIT+2
#define IOERR_UNIT_NOT_READY IOERR_UNIT+3
#define IOERR_UNIT_PWR_OFF IOERR_UNIT+4
#define IOERR_RBA 0x0300
#define IOERR_RBA_ADDRESSING_ERROR IOERR_RBA+IOERR_RETRY+1
#define IOERR_RBA_LIMIT IOERR_RBA+2
#define IOERR_RBA_CRC_ERROR IOERR_RBA+IOERR_RETRY+3
#define IOERR_MEDIA 0x0400
#define IOERR_MEDIA_NOT_FORMATTED IOERR_MEDIA+1
#define IOERR_MEDIA_NOT_SUPPORTED IOERR_MEDIA+2
#define IOERR_MEDIA_WRITE_PROTECT IOERR_MEDIA+3
#define IOERR_MEDIA_CHANGED IOERR_MEDIA+4
#define IOERR_MEDIA_NOT_PRESENT IOERR_MEDIA+5
#define IOERR_ADAPTER 0x0500
#define IOERR_ADAPTER_HOSTBUSCHECK IOERR_ADAPTER+1
#define IOERR_ADAPTER_DEVICEBUSCHECK IOERR_ADAPTER+IOERR_RETRY+2
#define IOERR_ADAPTER_OVERRUN IOERR_ADAPTER+IOERR_RETRY+3
#define IOERR_ADAPTER_UNDERRUN IOERR_ADAPTER+IOERR_RETRY+4
#define IOERR_ADAPTER_DIAGFAIL IOERR_ADAPTER+5
#define IOERR_ADAPTER_TIMEOUT IOERR_ADAPTER+IOERR_RETRY+6
#define IOERR_ADAPTER_DEVICE_TIMEOUT IOERR_ADAPTER+IOERR_RETRY+7
#define IOERR_ADAPTER_REQ_NOT_SUPPORTED IOERR_ADAPTER+8
#define IOERR_ADAPTER_REFER_TO_STATUS IOERR_ADAPTER+9
#define IOERR_ADAPTER_NONSPECIFIC IOERR_ADAPTER+10
#define IOERR_DEVICE 0x0600
#define IOERR_DEVICE_DEVICEBUSCHECK IOERR_DEVICE+IOERR_RETRY+1
#define IOERR_DEVICE_REQ_NOT_SUPPORTED IOERR_DEVICE+2
#define IOERR_DEVICE_DIAGFAIL IOERR_DEVICE+3
#define IOERR_DEVICE_BUSY IOERR_DEVICE+IOERR_RETRY+4
#define IOERR_DEVICE_OVERRUN IOERR_DEVICE+IOERR_RETRY+5
#define IOERR_DEVICE_UNDERRUN IOERR_DEVICE+IOERR_RETRY+6
#define IOERR_DEVICE_RESET IOERR_DEVICE+7
#define IOERR_DEVICE_NONSPECIFIC IOERR_DEVICE+8
/*--------------------------------------------------------------------------*/
/* Request Control flags in IORBH->RequestControl */
/*--------------------------------------------------------------------------*/
#define IORB_ASYNC_POST 0x0001 /* Asynchronous post enabled */
#define IORB_CHAIN 0x0002 /* IORB chain link enabled */
#define IORB_CHS_ADDRESSING 0x0004 /* CHS fmt addr in RBA field */
#define IORB_REQ_STATUSBLOCK 0x0008 /* Obtain status block data */
#define IORB_DISABLE_RETRY 0x0010 /* Disable retries in ADD */
/*--------------------------------------------------------------------------*/
/* ADAPTER CONFIGURATION IORB (for IOCC_CONFIGURATION) */
/*--------------------------------------------------------------------------*/
typedef struct _IORB_CONFIGURATION { /* IOCFG */
IORBH iorbh; /* IORB header */
DEVICETABLE far *pDeviceTable; /* Far pointer to adapt. dev. table */
USHORT DeviceTableLen ; /* Length of adapter device table */
} IORB_CONFIGURATION, FAR *PIORB_CONFIGURATION, *NPIORB_CONFIGURATION;
/* Adapter device table returned by GET_DEVICE_TABLE */
typedef struct _DEVICETABLE { /* IODT */
UCHAR ADDLevelMajor; /* ADD major support level */
UCHAR ADDLevelMinor; /* ADD minor support level */
USHORT ADDHandle; /* ADD handle */
USHORT TotalAdapters; /* Number of adapters supported */
NPADAPTERINFO pAdapter [1]; /* Array of adapter info pointers */
} DEVICETABLE, FAR *PDEVICETABLE;
/*--------------------------------------------------------------------------*/
/* Current ADD Level for DEVICETABLE->AddLevelMajor, AddLevelMinor */
/*--------------------------------------------------------------------------*/
#define ADD_LEVEL_MAJOR 0x01
#define ADD_LEVEL_MINOR 0x00
typedef struct _UNITINFO { /* IOUI */
USHORT AdapterIndex; /* nth adapter this driver */
USHORT UnitIndex; /* nth unit on this card */
USHORT UnitFlags; /* Unit flags */
USHORT Reserved; /* Reserved ; must be 0 */
USHORT UnitHandle; /* Assigned by ADD or filter */
USHORT FilterADDHandle; /* Handle of filter ADD 0 = None */
USHORT UnitType; /* Unit type */
USHORT QueuingCount; /* Recommended number to queue */
UCHAR UnitSCSITargetID; /* SCSI target ID (SCSI only) */
UCHAR UnitSCSILUN; /* SCSI log. unit (SCSI only) */
} UNITINFO;
/*--------------------------------------------------------------------------*/
/* Unit Flags for UNITINFO->UnitFlags */
/*--------------------------------------------------------------------------*/
#define UF_REMOVABLE 0x0001 /* Media can be removed. */
#define UF_CHANGELINE 0x0002 /* ChangeLine supported */
#define UF_PREFETCH 0x0004 /* Supports prefetch read */
#define UF_A_DRIVE 0x0008 /* Manages A: */
#define UF_B_DRIVE 0x0010 /* Manages B: */
#define UF_NODASD_SUPT 0x0020 /* Suppress DASD Mgr support. */
#define UF_NOSCSI_SUPT 0x0040 /* Suppress SCSI Mgr support. */
#define UF_DEFECTIVE 0x0080 /* Device is defective. */
/*--------------------------------------------------------------------------*/
/* Unit Types for UNITINFO->UnitType */
/*--------------------------------------------------------------------------*/
#define UIB_TYPE_DISK 0x0000 /* All direct access devices */
#define UIB_TYPE_TAPE 0x0001 /* Sequential access devices */
#define UIB_TYPE_PRINTER 0x0002 /* Printer device */
#define UIB_TYPE_PROCESSOR 0x0003 /* Processor type device */
#define UIB_TYPE_WORM 0x0004 /* Write Once/Read Many device */
#define UIB_TYPE_CDROM 0x0005 /* CD ROM device */
#define UIB_TYPE_SCANNER 0x0006 /* Scanner device */
#define UIB_TYPE_OPTICAL_MEMORY 0x0007/* Some optical disk */
#define UIB_TYPE_CHANGER 0x0008 /* Changer device (such as juke box) */
#define UIB_TYPE_COMM 0x0009 /* Communication devices */
typedef struct _ADAPTERINFO { /* IOAI */
UCHAR AdapterName [17]; /* Adapter name ASCIIZ string */
UCHAR Reserved; /* */
USHORT AdapterUnits; /* Number of units this adapter */
USHORT AdapterDevBus; /* Bus Type - Adapter to device */
UCHAR AdapterIOAccess; /* I/O Type - Adapter to host */
UCHAR AdapterHostBus; /* Bus Type - Adapter to host */
UCHAR AdapterSCSITargetID;/* Adapter SCSI target ID */
UCHAR AdapterSCSILUN; /* Adapter SCSI LUN */
USHORT AdapterFlags;
USHORT MaxHWSGList; /* Max HW S/G list entries */
ULONG MaxCDBTransferLength;/* Max data length for CDBs */
UNITINFO UnitInfo [1]; /* Unit info for each unit */
} ADAPTERINFO;
/*--------------------------------------------------------------------------*/
/* Adapter Flags for ADAPTERINFO->AdapterFlags */
/*--------------------------------------------------------------------------*/
#define AF_16M 0x0001 /* Supports > 16M addresses */
#define AF_IBM_SCB 0x0002 /* Supports IBM SCB commands */
#define AF_HW_SCATGAT 0x0004 /* Supports scatter/gather in HW */
#define AF_CHS_ADDRESSING 0x0008 /* Supports CHS addressing in HW */
#define AF_ASSOCIATED_DEVBUS 0x0010 /* Supports > 1 Device Bus */
/*--------------------------------------------------------------------------*/
/* Adapter-to-Device protocol for ADAPTERINFO->AdapterDevBus */
/*--------------------------------------------------------------------------*/
#define AI_DEVBUS_OTHER 0x0000
#define AI_DEVBUS_ST506 0x0001 /* ST-506 CAM-I */
#define AI_DEVBUS_ST506_II 0x0002 /* ST-506 CAM-II */
#define AI_DEVBUS_ESDI 0x0003 /* ESDI */
#define AI_DEVBUS_FLOPPY 0x0004 /* Diskette */
#define AI_DEVBUS_SCSI_1 0x0005
#define AI_DEVBUS_SCSI_2 0x0006
#define AI_DEVBUS_SCSI_3 0x0007
#define AI_DEVBUS_NONSCSI_CDROM 0x0008 /* Non-SCSI CD-ROM interface bus */
/*--------------------------------------------------------------------------*/
/* Note: One of the following BUS WIDTH indicators must be */
/* OR'd with the above field. */
/*--------------------------------------------------------------------------*/
#define AI_DEVBUS_FAST_SCSI 0x0100
#define AI_DEVBUS_8BIT 0x0200
#define AI_DEVBUS_16BIT 0x0400
#define AI_DEVBUS_32BIT 0x0800
/*--------------------------------------------------------------------------*/
/* Adapter-to-Device protocol for ADAPTERINFO->AdapterIOAccess */
/*--------------------------------------------------------------------------*/
#define AI_IOACCESS_OTHER 0x00
#define AI_IOACCESS_BUS_MASTER 0x01
#define AI_IOACCESS_PIO 0x02
#define AI_IOACCESS_DMA_SLAVE 0x04
#define AI_IOACCESS_MEMORY_MAP 0x08
/*--------------------------------------------------------------------------*/
/* Adapter-to-Host bus type for ADAPTERINFO->AdapterHostBus */
/*--------------------------------------------------------------------------*/
#define AI_HOSTBUS_OTHER 0x00
#define AI_HOSTBUS_ISA 0x01
#define AI_HOSTBUS_EISA 0x02
#define AI_HOSTBUS_uCHNL 0x03
#define AI_HOSTBUS_UNKNOWN 0x0f
/*--------------------------------------------------------------------------*/
/* Note: One of the following BUS WIDTH indicators must be */
/* OR'd with the above field. */
/*--------------------------------------------------------------------------*/
#define AI_BUSWIDTH_8BIT 0x10
#define AI_BUSWIDTH_16BIT 0x20
#define AI_BUSWIDTH_32BIT 0x30
#define AI_BUSWIDTH_64BIT 0x40
#define AI_BUSWIDTH_UNKNOWN 0xf0
/****************************************************************************/
/* UNIT CONTROL IORB (for IOCC_UNIT_CONTROL) */
/****************************************************************************/
typedef struct _IORB_UNIT_CONTROL { /* IOUC */
IORBH iorbh; /* IORB Header */
USHORT Flags; /* */
PUNITINFO pUnitInfo; /* For: IOCM_CHANGE_UNITINFO */
USHORT UnitInfoLen; /* Length of UnitInfo structure */
} IORB_UNIT_CONTROL, FAR *PIORB_UNIT_CONTROL, *NPIORB_UNIT_CONTROL;
/****************************************************************************/
/* DASD GEOMETRY IORB (for IOCC_GEOMETRY) */
/****************************************************************************/
typedef struct _IORB_GEOMETRY { /* IOGG */
IORBH iorbh; /* IORB header */
PGEOMETRY pGeometry; /* Far pointer to GEOMETRY block */
USHORT GeometryLen; /* Length of GEOMETRY block */
} IORB_GEOMETRY, FAR *PIORB_GEOMETRY, *NPIORB_GEOMETRY;
typedef struct _GEOMETRY { /* IOG */
ULONG TotalSectors;
USHORT BytesPerSector;
USHORT Reserved;
USHORT NumHeads;
ULONG TotalCylinders;
USHORT SectorsPerTrack;
} GEOMETRY, FAR *PGEOMETRY, *NPGEOMETRY;
/****************************************************************************/
/* Scatter/Gather List Entry */
/****************************************************************************/
typedef struct _SCATGATENTRY { / * IOSG */
ULONG ppXferBuf; /* Physical pointer to xfer buffer */
ULONG XferBufLen; /* Length of transfer buffer */
} SCATGATENTRY, FAR *PSCATGATENTRY, *NPSCATGATENTRY;
#define MAXSGLISTSIZE (sizeof(SCATGATENTRY)) * 16
/****************************************************************************/
/* EXECUTE_IO IORB (for IOCC_EXECUTE_IO) */
/****************************************************************************/
typedef struct _IORB_EXECUTEIO { /* IOXIO */
IORBH iorbh; /* IORB header */
USHORT cSGList; /* Count of S/G list elements */
PSCATGATENTRY pSGList; /* Far pointer to s/g list */
ULONG ppSGList; /* Phys. address of S/G list */
ULONG RBA; /* RBA starting address */
USHORT BlockCount; /* Block count */
USHORT BlocksXferred; /* Block done count */
USHORT BlockSize; /* Size of a block in bytes */
USHORT Flags;
} IORB_EXECUTEIO, FAR *PIORB_EXECUTEIO, *NPIORB_EXECUTEIO;
/****************************************************************************/
/* CHS Direct Addressing (Overlays RBA field) */
/****************************************************************************/
typedef struct _CHS_ADDR { /* IOCHS */
USHORT Cylinder;
UCHAR Head;
UCHAR Sector;
} CHS_ADDR, FAR *PCHS_ADDR, *NPCHS_ADDR;
/*--------------------------------------------------------------------------*/
/* IORB specific flags for IORB EXECUTE_IO->Flags */
/*--------------------------------------------------------------------------*/
#define XIO_DISABLE_HW_WRITE_CACHE 0x0001
#define XIO_DISABLE_HW_READ_CACHE 0x0002
/****************************************************************************/
/* FORMAT IORB (for IOCC_FORMAT) */
/****************************************************************************/
typedef struct _IORB_FORMAT { /* IOFMT */
IORBH iorbh; /* IORB Header */
USHORT cSGList; /* Count of S/G list elements */
PSCATGATENTRY pSGList; /* Far pointer to s/g list */
ULONG ppSGList; /* Phys. address of S/Glist */
USHORT FormatCmdLen; /* */
PBYTE pFormatCmd; /* SCSI CDB or track fmt cmd */
UCHAR Reserved_1 [8]; /* Reserved; must not be modified */
} IORB_FORMAT, FAR *PIORB_FORMAT, *NPIORB_FORMAT;
typedef struct _FORMAT_CMD_TRACK { /* FMCT */
USHORT Flags;
ULONG RBA;
USHORT cTrackEntries;
} FORMAT_CMD_TRACK, FAR *PFORMAT_CMD_TRACK, *NPFORMAT_CMD_TRAC ;
/*--------------------------------------------------------------------------*/
/* Flags for FORMAT_CMD_TRACK->Flags */
/*--------------------------------------------------------------------------*/
#define FF_VERIFY 0x0001 /* Verify sectors after formatting. */
/****************************************************************************/
/* ADAPTER PASS THROUGH IORB (for IOCC_ADAPTER_PASSTHRU) */
/****************************************************************************/
typedef struct _IORB_ADAPTER_PASSTHRU { /* IOPT */
IORBH iorbh; /* IORB header */
USHORT cSGList; /* Count of S/G list elements */
PSCATGATENTRY pSGList; /* Far pointer to s/g list */
ULONG ppSGLIST; /* Phys. address of S/G list */
USHORT ControllerCmdLen;
PBYTE pControllerCmd;
ULONG ppSCB; /* Phys. pointer to SCB for SCB_PASSTHRU */
USHORT Flags;
} IORB_ADAPTER_PASSTHRU, FAR *PIORB_ADAPTER_PASSTHRU, *NPIORB_ADAPTER_PASSTHRU;
/*--------------------------------------------------------------------------*/
/* IORB specific flags for IORB_ADAPTER_PASSTHRU->Flags */
/* */
/* Note: These flags apply to IOCM_EXECUTE_CDB. */
/*--------------------------------------------------------------------------*/
#define PT_DIRECTION_IN 0x0001 /* Data xfer to host adapter */
/****************************************************************************/
/* UNIT STATUS IORB (for IOCC_UNIT_STATUS) */
/****************************************************************************/
typedef struct _IORB_UNIT_STATUS { /* IOUS */
IORBH iorbh ;
USHORT UnitStatus ;
} IORB_UNIT_STATUS, FAR *PIORB_UNIT_STATUS, *NPIORB_UNIT_STATUS;
/*--------------------------------------------------------------------------*/
/* Unit Status for IORB_UNIT_STATUS->UnitStatus */
/* */
/* Note: These flags apply to IOCM_GET_UNIT_STATUS */
/*--------------------------------------------------------------------------*/
#define US_READY 0x0001 /* Unit ready */
#define US_POWER 0x0002 /* Unit powered on */
#define US_DEFECTIVE 0x0004 /* Unit operational */
/*--------------------------------------------------------------------------*/
/* Unit Status for IORB_UNIT_STATUS->UnitStatus */
/* */
/* Note: These flags apply to IOCM_GET_CHANGELINE_STATE */
/*--------------------------------------------------------------------------*/
#define US_CHANGELINE_ACTIVE 0x0001 /* ChangeLine state */
/*--------------------------------------------------------------------------*/
/* Unit Status for IORB_UNIT_STATUS->UnitStatus */
/* */
/* Note: These flags apply to IOCM_GET_MEDIA_SENSE */
/*--------------------------------------------------------------------------*/
#define US_MEDIA_UNKNOWN 0x0000 /* Unable to determine media */
#define US_MEDIA_720KB 0x0001 /* 720KB in 3.5" drive */
#define US_MEDIA_144MB 0x0002 /* 1.44MB in 3.5" drive */
#define US_MEDIA_288MB 0x0003 /* 2.88MB in 3.5" drive */
/****************************************************************************/
/* DEVICE CONTROL IORB (for IOCC_DEVICE_CONTROL */
/****************************************************************************/
typedef struct _IORB_DEVICE_CONTROL { /* IODC */
IORBH iorbh; /* IORB header */
USHORT Flags;
USHORT Reserved;
} IORB_DEVICE_CONTROL, FAR *PIORB_DEVICE_CONTROL, *NPIORB_DEVICE_CONTROL;
/*--------------------------------------------------------------------------*/
/* IORB-specific flags for IORB_DEVICE_CONTROL->Flags */
/* */
/* Note: These flags apply to IOCM_SUSPEND */
/*--------------------------------------------------------------------------*/
#define DC_SUSPEND_DEFERRED 0x0000 /* Suspend after device idle */
#define DC_SUSPEND_IMMEDIATE 0x0001 /* Suspend after current request */
#define MAX_IORB_SIZE 128
OS/2 SCSI Device Driver Interface Specification
Advanced SCSI Programming Interface (ASPI) OS/2 Specification
Adapter Device Driver Interface Questions and Answers
Device Driver Test Tool (DDTT)
Notices
Fifth Edition (September 1997)
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