NetBSD/sys/arch/sparc/scsi/sdtrace.h

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/*
* Copyright (c) 1992 The Regents of the University of California.
* All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratories.
*
* %sccs.include.redist.c%
*
* %W% (Berkeley) %G%
*
* from: Header: sdtrace.h,v 1.6 92/12/02 03:53:47 torek Exp (LBL)
* $Id: sdtrace.h,v 1.1 1993/10/27 17:48:44 deraadt Exp $
*/
/*
* SCSI disk command tracing
*/
#if defined(SDTRACE) || !defined(KERNEL)
struct sdtrace {
struct timeval time; /* timestamp */
u_int block; /* disk block */
u_int bcount; /* # bytes transferred */
u_char tcode; /* trace code */
u_char target; /* target number */
u_char unit; /* unit number on target */
u_char read; /* read operation */
};
#define T_START 0x01
#define T_MKCDB 0x02
#define T_INTR 0x03
#endif
#ifdef SDTRACE
/* Allow kernel config to override number of entries */
#ifndef NSDOPBUF
#define NSDOPBUF 1024
#endif
struct sdtrace sdopbuf[NSDOPBUF];
struct sdtrace *sdopptr = sdopbuf;
int nsdopbuf = NSDOPBUF; /* for sdtrace */
u_long sdopcnt;
#define SD_TRACE(code, sc, bp) { \
if (++sdopptr >= &sdopbuf[NSDOPBUF]) \
sdopptr = sdopbuf; \
microtime(&sdopptr->time); \
sdopptr->tcode = code; \
sdopptr->read = bp->b_flags & B_READ; \
sdopptr->block = bp->b_blkno; \
sdopptr->bcount = bp->b_bcount; \
sdopptr->target = sc->sc_unit.u_targ; \
sdopptr->unit = sc->sc_unit.u_unit; \
++sdopcnt; \
}
#else
#define SD_TRACE(code, sc, bp) { }
#endif