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https://github.com/vivier/EMILE.git
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137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/*
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*
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* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
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*
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*/
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#include <stdio.h>
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#include <malloc.h>
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#include <scsi/scsi.h>
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#include "bank.h"
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#include "misc.h"
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#include "glue.h"
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#define COMPLETION_TIMEOUT 300
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static int scsi_command(int target, char* cdb, int count, TIB_t* tib)
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{
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int err;
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short stat;
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short message;
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err = SCSIGet();
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if (err != noErr)
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{
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printf("Cannot get SCSI bus (%d)\n", err);
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return err;
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}
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err = SCSISelect(target);
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if (err != noErr)
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{
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printf("Cannot select target %d (%d)\n", target, err);
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return err;
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}
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err = SCSICmd(cdb, count);
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if (err != noErr)
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{
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printf("Cannot send command (%d)\n", err);
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goto complete;
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}
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err = SCSIRead(tib);
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if (err != noErr)
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{
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printf("Cannot read data (%d)\n", err);
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goto complete;
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}
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complete:
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err = SCSIComplete(&stat, &message, COMPLETION_TIMEOUT);
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if (err != noErr)
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{
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printf("Cannot complete transaction %d %d(%d)\n",
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stat, message, err);
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return err;
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}
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return noErr;
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}
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int scsi_INQUIRY(int target, char *buffer, size_t count)
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{
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char cdb[6];
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TIB_t tib[2];
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cdb[0] = INQUIRY;
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cdb[1] = 0;
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cdb[2] = 0;
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cdb[3] = 0;
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cdb[4] = count;
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cdb[5] = 0;
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tib[0].opcode = op_no_inc;
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tib[0].param1 = (int)buffer;
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tib[0].param2 = count;
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tib[1].opcode = op_stop;
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tib[1].param1 = 0;
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tib[1].param2 = 0;
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return scsi_command(target, cdb, 6, tib);
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}
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/******************************************************************************
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+=====-========-========-========-========-========-========-========-========+
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| Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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|Byte | | | | | | | | |
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|=====+=======================================================================|
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| 0 | Operation code (28h) |
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|-----+-----------------------------------------------------------------------|
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| 1 | Logical unit number | DPO | FUA | Reserved | RelAdr |
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|-----+-----------------------------------------------------------------------|
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| 2 | (MSB) |
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|-----+--- ---|
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| 3 | |
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|-----+--- Logical block address ---|
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| 4 | |
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|-----+--- ---|
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| 5 | (LSB) |
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|-----+-----------------------------------------------------------------------|
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| 6 | Reserved |
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|-----+-----------------------------------------------------------------------|
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| 7 | (MSB) |
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|-----+--- Transfer length |
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| 8 | (LSB) |
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|-----+-----------------------------------------------------------------------|
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| 9 | Control |
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+=============================================================================+
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******************************************************************************/
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int scsi_READ(int target, unsigned long offset, unsigned short nb_blocks,
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char *buffer, int buffer_size)
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{
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char cdb[10];
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TIB_t tib[2];
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cdb[0] = READ_10;
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cdb[1] = 0;
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cdb[2] = (offset >> 24) & 0xFF;
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cdb[3] = (offset >> 16) & 0xFF;
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cdb[4] = (offset >> 8) & 0xFF;
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cdb[5] = offset & 0xFF;
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cdb[6] = 0;
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cdb[7] = (nb_blocks >> 8) & 0xFF;
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cdb[8] = nb_blocks & 0xFF;
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cdb[9] = 0;
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tib[0].opcode = op_no_inc;
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tib[0].param1 = (int)buffer;
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tib[0].param2 = buffer_size;
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tib[1].opcode = op_stop;
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tib[1].param1 = 0;
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tib[1].param2 = 0;
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return scsi_command(target, cdb, 10, tib);
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}
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