105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
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/* @(#)buffer.c 1.158 09/07/10 Copyright 1995-2009 J. Schilling */
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#include <schily/mconfig.h>
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)buffer.c 1.158 09/07/10 Copyright 1995-2009 J. Schilling";
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#endif
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/*
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* SCSI command functions for read_buffer/write_buffer
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*
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* Copyright (c) 1995-2009 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/stdio.h>
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#include <schily/standard.h>
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#include <schily/utypes.h>
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#include <schily/btorder.h>
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#include <schily/intcvt.h>
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#include <schily/schily.h>
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#include <scg/scgcmd.h>
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#include <scg/scsidefs.h>
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#include <scg/scsireg.h>
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#include <scg/scsitransp.h>
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#include "libscgcmd.h"
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EXPORT int read_buffer __PR((SCSI *scgp, caddr_t bp, int cnt, int mode));
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EXPORT int write_buffer __PR((SCSI *scgp, char *buffer, long length, int mode, int bufferid, long offset));
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EXPORT int
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read_buffer(scgp, bp, cnt, mode)
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SCSI *scgp;
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caddr_t bp;
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int cnt;
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int mode;
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{
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register struct scg_cmd *scmd = scgp->scmd;
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fillbytes((caddr_t)scmd, sizeof (*scmd), '\0');
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scmd->addr = bp;
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scmd->size = cnt;
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scmd->dma_read = 1;
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scmd->cdb_len = SC_G1_CDBLEN;
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scmd->sense_len = CCS_SENSE_LEN;
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scmd->cdb.g1_cdb.cmd = 0x3C; /* Read Buffer */
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scmd->cdb.g1_cdb.lun = scg_lun(scgp);
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scmd->cdb.cmd_cdb[1] |= (mode & 7);
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g1_cdblen(&scmd->cdb.g1_cdb, cnt);
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scgp->cmdname = "read buffer";
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return (scg_cmd(scgp));
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}
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EXPORT int
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write_buffer(scgp, buffer, length, mode, bufferid, offset)
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SCSI *scgp;
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char *buffer;
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long length;
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int mode;
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int bufferid;
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long offset;
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{
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register struct scg_cmd *scmd = scgp->scmd;
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char *cdb;
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fillbytes((caddr_t)scmd, sizeof (*scmd), '\0');
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scmd->addr = buffer;
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scmd->size = length;
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scmd->flags = SCG_DISRE_ENA|SCG_CMD_RETRY;
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scmd->cdb_len = SC_G1_CDBLEN;
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scmd->sense_len = CCS_SENSE_LEN;
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cdb = (char *)scmd->cdb.cmd_cdb;
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cdb[0] = 0x3B;
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cdb[1] = mode & 7;
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cdb[2] = bufferid;
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cdb[3] = offset >> 16;
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cdb[4] = (offset >> 8) & 0xff;
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cdb[5] = offset & 0xff;
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cdb[6] = length >> 16;
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cdb[7] = (length >> 8) & 0xff;
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cdb[8] = length & 0xff;
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scgp->cmdname = "write_buffer";
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if (scg_cmd(scgp) >= 0)
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return (1);
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return (0);
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}
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