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Sprite 1984 - 1993
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sun4.md
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xylogics450.h
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C/C++ Source or Header
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1992-12-18
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/*
* xylogics450.h --
*
* Declarations for the Xylogics 450 controller.
*
* Copyright 1989 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*
* $Header: /cdrom/src/kernel/Cvsroot/kernel/dev/sun4.md/xylogics450.h,v 9.1 90/09/11 12:42:44 rab Exp $ SPRITE (Berkeley)
*/
#ifndef _XYLOGICS450
#define _XYLOGICS450
#include "devBlockDevice.h"
/*
* Format of the Fs_Device unit number for devices attached to a Xylogics450
* HBA. The 16 bits of the Disk unit number are used as follows:
*
* | Bits 15 to 7 | Bits 6 to 5 | Bits 4 to 3 | Bits 2 to 0 |
* | Not used | Ctrl number | Disk Number | Partition Number |
*
* XYLOGICS_DISK_NUM_FROM_DEVUNIT() - Extract disk number from the Device
* unit number.
* XYLOGICS_CTRL_NUM_FROM_DEVUNIT() - Extract the controller number from
* the Fs_Deviceunit number.
*/
#define XYLOGICS_DISK_NUM_FROM_DEVUNIT(unit) (((unit)>>3)&0x3)
#define XYLOGICS_CTRL_NUM_FROM_DEVUNIT(unit) (((unit)>>5)&0x3)
#define XYLOGICS_PARTITION_NUM_FROM_DEVUNIT(unit) ((unit)&0x3)
extern ClientData DevXylogics450Init _ARGS_ ((DevConfigController *cntrlrPtr));
extern Boolean DevXylogics450Intr _ARGS_ ((ClientData clientData));
extern DevBlockDeviceHandle *DevXylogics450DiskAttach _ARGS_ ((Fs_Device *devicePtr));
#endif /* _XYLOGICS450 */