CA2059921A1 - Scsi device drivers for multitasking operating system - Google Patents

Scsi device drivers for multitasking operating system

Info

Publication number
CA2059921A1
CA2059921A1 CA2059921A CA2059921A CA2059921A1 CA 2059921 A1 CA2059921 A1 CA 2059921A1 CA 2059921 A CA2059921 A CA 2059921A CA 2059921 A CA2059921 A CA 2059921A CA 2059921 A1 CA2059921 A1 CA 2059921A1
Authority
CA
Canada
Prior art keywords
scsi
generic
sdcd
sgdd
creates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2059921A
Other languages
French (fr)
Other versions
CA2059921C (en
Inventor
Dan Trotter Feriozi
Bharat Khatri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
Dan Trotter Feriozi
Bharat Khatri
International Business Machines Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dan Trotter Feriozi, Bharat Khatri, International Business Machines Corporation filed Critical Dan Trotter Feriozi
Publication of CA2059921A1 publication Critical patent/CA2059921A1/en
Application granted granted Critical
Publication of CA2059921C publication Critical patent/CA2059921C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10—Program control for peripheral devices
    • G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver

Abstract

A tiered device driver system includes a SCSI generic device driver (SGDD) in one tier and one or more SCSI
device-class drivers (SDCD) in another tier. In response to a request to access a SCSI device, the operating system creates a request packet that is passed to the appropriate SDCD. Such SDCD creates a generic request packet and associated data structures that contain information specific to the SCSI device being accessed. The generic request packet is passed on to a SCSI generic device driver (SGDD) that creates a SCSI ABIOS request block which it transmits to a SCSI adapter for accessing the desired SCSI device.
The SGDD provides functions common to the SDCDs.
CA002059921A 1991-02-12 1992-01-23 Scsi device drivers for multitasking operating system Expired - Fee Related CA2059921C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/654,441 US5307491A (en) 1991-02-12 1991-02-12 Layered SCSI device driver with error handling circuit providing sense data from device directly to the driver on the occurrence of an error
US654,441 1991-02-12

Publications (2)

Publication Number Publication Date
CA2059921A1 true CA2059921A1 (en) 1992-08-13
CA2059921C CA2059921C (en) 1998-02-03

Family

ID=24624871

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002059921A Expired - Fee Related CA2059921C (en) 1991-02-12 1992-01-23 Scsi device drivers for multitasking operating system

Country Status (4)

Country Link
US (1) US5307491A (en)
EP (1) EP0499394A1 (en)
JP (1) JPH0766354B2 (en)
CA (1) CA2059921C (en)

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Also Published As

Publication number Publication date
JPH04318649A (en) 1992-11-10
US5307491A (en) 1994-04-26
CA2059921C (en) 1998-02-03
JPH0766354B2 (en) 1995-07-19
EP0499394A1 (en) 1992-08-19

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