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c5da4c74e9076082a33ec7bebd86c501bd5d92af
86Box/src/scsi_disk.c
OBattler c5da4c74e9 Added BusLogic BT-542B BIOS support (patch from TheCollector1995); 
Brought the Adaptec AHA-1540B BIOS support to an essentially work state;
Fixed some warnings in CPU/808x.c.
2017-08-15 19:49:25 +02:00

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* Emulation of SCSI fixed and removable disks.
*
* Version: @(#)scsi_disk.c 1.0.3 2017/07/30
*
* Author: Miran Grca, <mgrca8@gmail.com>
* Copyright 2017-2017 Miran Grca.
*/
#include <malloc.h>
#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include "86box.h"
#include "cdrom.h"
#include "ibm.h"
#include "hdd_image.h"
#include "ide.h"
#include "piix.h"
#include "scsi.h"
#include "scsi_disk.h"
#include "timer.h"
#include "win/plat_iodev.h"
/* Bits of 'status' */
#define ERR_STAT 0x01
#define DRQ_STAT 0x08 /* Data request */
#define DSC_STAT 0x10
#define SERVICE_STAT 0x10
#define READY_STAT 0x40
#define BUSY_STAT 0x80
/* Bits of 'error' */
#define ABRT_ERR 0x04 /* Command aborted */
#define MCR_ERR 0x08 /* Media change request */
#define MAX_BLOCKS_AT_ONCE 340
#define scsi_hd_sense_error shdc[id].sense[0]
#define scsi_hd_sense_key shdc[id].sense[2]
#define scsi_hd_asc shdc[id].sense[12]
#define scsi_hd_ascq shdc[id].sense[13]
scsi_hard_disk_t shdc[HDC_NUM];
FILE *shdf[HDC_NUM];
uint8_t scsi_hard_disks[16][8] = { { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } };
/* Table of all SCSI commands and their flags, needed for the new disc change / not ready handler. */
uint8_t scsi_hd_command_flags[0x100] =
{
IMPLEMENTED | CHECK_READY | NONDATA, /* 0x00 */
IMPLEMENTED | ALLOW_UA | NONDATA | SCSI_ONLY, /* 0x01 */
0,
IMPLEMENTED | ALLOW_UA, /* 0x03 */
IMPLEMENTED | CHECK_READY | ALLOW_UA | NONDATA | SCSI_ONLY, /* 0x04 */
0, 0, 0,
IMPLEMENTED | CHECK_READY, /* 0x08 */
0,
IMPLEMENTED | CHECK_READY, /* 0x0A */
0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED | ALLOW_UA, /* 0x12 */
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY, /* 0x13 */
0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED | CHECK_READY, /* 0x1B */
0, 0,
IMPLEMENTED | CHECK_READY, /* 0x1E */
0, 0, 0, 0, 0, 0,
IMPLEMENTED | CHECK_READY, /* 0x25 */
0, 0,
IMPLEMENTED | CHECK_READY, /* 0x28 */
0,
IMPLEMENTED | CHECK_READY, /* 0x2A */
0, 0, 0, 0,
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY, /* 0x2F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED | CHECK_READY, /* 0xA8 */
0,
IMPLEMENTED | CHECK_READY, /* 0xAA */
0, 0, 0, 0,
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY, /* 0xAF */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED, /* 0xBD */
0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/* #define ENABLE_SCSI_HD_LOG 0 */
int scsi_hd_do_log = 0;
void scsi_hd_log(const char *format, ...)
{
#ifdef ENABLE_SCSI_HD_LOG
if (scsi_hd_do_log)
{
va_list ap;
va_start(ap, format);
vprintf(format, ap);
va_end(ap);
fflush(stdout);
}
#endif
}
/* Translates ATAPI status (ERR_STAT flag) to SCSI status. */
int scsi_hd_err_stat_to_scsi(uint8_t id)
{
if (shdc[id].status & ERR_STAT)
{
return SCSI_STATUS_CHECK_CONDITION;
}
else
{
return SCSI_STATUS_OK;
}
return SCSI_STATUS_OK;
}
/* Translates ATAPI phase (DRQ, I/O, C/D) to SCSI phase (MSG, C/D, I/O). */
int scsi_hd_phase_to_scsi(uint8_t id)
{
if (shdc[id].status & 8)
{
switch (shdc[id].phase & 3)
{
case 0:
return 0;
case 1:
return 2;
case 2:
return 1;
case 3:
return 7;
}
}
else
{
if ((shdc[id].phase & 3) == 3)
{
return 3;
}
else
{
/* Translate reserved ATAPI phase to reserved SCSI phase. */
return 4;
}
}
return 0;
}
int find_hdc_for_scsi_id(uint8_t scsi_id, uint8_t scsi_lun)
{
uint8_t i = 0;
for (i = 0; i < HDC_NUM; i++)
{
if ((wcslen(hdc[i].fn) == 0) && (hdc[i].bus != HDD_BUS_SCSI_REMOVABLE))
{
continue;
}
if (((hdc[i].spt == 0) || (hdc[i].hpc == 0) || (hdc[i].tracks == 0)) && (hdc[i].bus != HDD_BUS_SCSI_REMOVABLE))
{
continue;
}
if (((hdc[i].bus == HDD_BUS_SCSI) || (hdc[i].bus == HDD_BUS_SCSI_REMOVABLE)) && (hdc[i].scsi_id == scsi_id) && (hdc[i].scsi_lun == scsi_lun))
{
return i;
}
}
return 0xff;
}
void scsi_disk_insert(uint8_t id)
{
shdc[id].unit_attention = (hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? 1 : 0;
}
void scsi_loadhd(int scsi_id, int scsi_lun, int id)
{
int ret = 0;
ret = hdd_image_load(id);
if (!ret)
{
if (hdc[id].bus != HDD_BUS_SCSI_REMOVABLE)
{
scsi_hard_disks[scsi_id][scsi_lun] = 0xff;
}
}
else
{
scsi_disk_insert(id);
}
}
void scsi_reloadhd(int id)
{
int ret = 0;
if(hdc[id].prev_fn == NULL)
{
return;
}
else
{
wcscpy(hdc[id].fn, hdc[id].prev_fn);
memset(hdc[id].prev_fn, 0, sizeof(hdc[id].prev_fn));
}
ret = hdd_image_load(id);
if (ret)
{
scsi_disk_insert(id);
}
}
void scsi_unloadhd(int scsi_id, int scsi_lun, int id)
{
hdd_image_unload(id, 1);
}
void build_scsi_hd_map()
{
uint8_t i = 0;
uint8_t j = 0;
for (i = 0; i < 16; i++)
{
memset(scsi_hard_disks[i], 0xff, 8);
}
for (i = 0; i < 16; i++)
{
for (j = 0; j < 8; j++)
{
scsi_hard_disks[i][j] = find_hdc_for_scsi_id(i, j);
if (scsi_hard_disks[i][j] != 0xff)
{
memset(&(shdc[scsi_hard_disks[i][j]]), 0, sizeof(shdc[scsi_hard_disks[i][j]]));
if (wcslen(hdc[scsi_hard_disks[i][j]].fn) > 0)
{
scsi_loadhd(i, j, scsi_hard_disks[i][j]);
}
}
}
}
}
int scsi_hd_read_capacity(uint8_t id, uint8_t *cdb, uint8_t *buffer, uint32_t *len)
{
int size = 0;
size = hdd_image_get_last_sector(id);
memset(buffer, 0, 8);
buffer[0] = (size >> 24) & 0xff;
buffer[1] = (size >> 16) & 0xff;
buffer[2] = (size >> 8) & 0xff;
buffer[3] = size & 0xff;
buffer[6] = 2; /* 512 = 0x0200 */
*len = 8;
pclog("Read Capacity\n");
pclog("buffer[0]=%x\n", buffer[0]);
pclog("buffer[1]=%x\n", buffer[1]);
pclog("buffer[2]=%x\n", buffer[2]);
pclog("buffer[3]=%x\n", buffer[3]);
return 1;
}
void scsi_hd_update_request_length(uint8_t id, int len, int block_len)
{
/* For media access commands, make sure the requested DRQ length matches the block length. */
switch (shdc[id].current_cdb[0])
{
case 0x08:
case 0x0a:
case 0x28:
case 0x2a:
case 0xa8:
case 0xaa:
if (shdc[id].request_length < block_len)
{
shdc[id].request_length = block_len;
}
/* Make sure we respect the limit of how many blocks we can transfer at once. */
if (shdc[id].requested_blocks > shdc[id].max_blocks_at_once)
{
shdc[id].requested_blocks = shdc[id].max_blocks_at_once;
}
shdc[id].block_total = (shdc[id].requested_blocks * block_len);
if (len > shdc[id].block_total)
{
len = shdc[id].block_total;
}
break;
default:
shdc[id].packet_len = len;
break;
}
/* If the DRQ length is odd, and the total remaining length is bigger, make sure it's even. */
if ((shdc[id].request_length & 1) && (shdc[id].request_length < len))
{
shdc[id].request_length &= 0xfffe;
}
/* If the DRQ length is smaller or equal in size to the total remaining length, set it to that. */
if (len <= shdc[id].request_length)
{
shdc[id].request_length = len;
}
return;
}
static void scsi_hd_command_common(uint8_t id)
{
shdc[id].status = BUSY_STAT;
shdc[id].phase = 1;
shdc[id].pos = 0;
if (shdc[id].packet_status == CDROM_PHASE_COMPLETE)
{
shdc[id].callback = 20 * SCSI_TIME;
}
else
{
shdc[id].callback = 60 * SCSI_TIME;
}
}
void scsi_hd_command_complete(uint8_t id)
{
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
scsi_hd_command_common(id);
}
static void scsi_hd_command_read_dma(uint8_t id)
{
shdc[id].packet_status = CDROM_PHASE_DATA_IN_DMA;
scsi_hd_command_common(id);
shdc[id].total_read = 0;
}
static void scsi_hd_command_write_dma(uint8_t id)
{
shdc[id].packet_status = CDROM_PHASE_DATA_OUT_DMA;
scsi_hd_command_common(id);
}
void scsi_hd_data_command_finish(uint8_t id, int len, int block_len, int alloc_len, int direction)
{
scsi_hd_log("SCSI HD %i: Finishing command (%02X): %i, %i, %i, %i, %i\n", id, shdc[id].current_cdb[0], len, block_len, alloc_len, direction, shdc[id].request_length);
shdc[id].pos=0;
if (alloc_len >= 0)
{
if (alloc_len < len)
{
len = alloc_len;
}
}
if (len == 0)
{
SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength = 0;
scsi_hd_command_complete(id);
}
else
{
if (direction == 0)
{
SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength = alloc_len;
scsi_hd_command_read_dma(id);
}
else
{
scsi_hd_command_write_dma(id);
}
}
scsi_hd_log("SCSI HD %i: Status: %i, cylinder %i, packet length: %i, position: %i, phase: %i\n", id, shdc[id].packet_status, shdc[id].request_length, shdc[id].packet_len, shdc[id].pos, shdc[id].phase);
}
static void scsi_hd_sense_clear(int id, int command)
{
shdc[id].previous_command = command;
scsi_hd_sense_key = scsi_hd_asc = scsi_hd_ascq = 0;
}
static void scsi_hd_cmd_error(uint8_t id)
{
shdc[id].error = ((scsi_hd_sense_key & 0xf) << 4) | ABRT_ERR;
if (shdc[id].unit_attention & 3)
{
shdc[id].error |= MCR_ERR;
}
shdc[id].status = READY_STAT | ERR_STAT;
shdc[id].phase = 3;
shdc[id].packet_status = 0x80;
shdc[id].callback = 50 * SCSI_TIME;
scsi_hd_log("SCSI HD %i: ERROR: %02X/%02X/%02X\n", id, scsi_hd_sense_key, scsi_hd_asc, scsi_hd_ascq);
}
static void scsi_hd_unit_attention(uint8_t id)
{
shdc[id].error = (SENSE_NOT_READY << 4) | ABRT_ERR;
if (shdc[id].unit_attention & 3)
{
shdc[id].error |= MCR_ERR;
}
shdc[id].status = READY_STAT | ERR_STAT;
shdc[id].phase = 3;
shdc[id].packet_status = 0x80;
shdc[id].callback = 50 * CDROM_TIME;
scsi_hd_log("SCSI HD %i: UNIT ATTENTION\n", id);
}
static void scsi_hd_not_ready(uint8_t id)
{
scsi_hd_sense_key = SENSE_NOT_READY;
scsi_hd_asc = ASC_MEDIUM_NOT_PRESENT;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
static void scsi_hd_write_protected(uint8_t id)
{
scsi_hd_sense_key = SENSE_UNIT_ATTENTION;
scsi_hd_asc = ASC_WRITE_PROTECTED;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
static void scsi_hd_invalid_lun(uint8_t id)
{
scsi_hd_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_hd_asc = ASC_INV_LUN;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
static void scsi_hd_illegal_opcode(uint8_t id)
{
scsi_hd_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_hd_asc = ASC_ILLEGAL_OPCODE;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
void scsi_hd_lba_out_of_range(uint8_t id)
{
scsi_hd_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_hd_asc = ASC_LBA_OUT_OF_RANGE;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
static void scsi_hd_invalid_field(uint8_t id)
{
scsi_hd_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_hd_asc = ASC_INV_FIELD_IN_CMD_PACKET;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
shdc[id].status = 0x53;
}
static void scsi_hd_data_phase_error(uint8_t id)
{
scsi_hd_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_hd_asc = ASC_DATA_PHASE_ERROR;
scsi_hd_ascq = 0;
scsi_hd_cmd_error(id);
}
/*SCSI Sense Initialization*/
void scsi_hd_sense_code_ok(uint8_t id)
{
scsi_hd_sense_key = SENSE_NONE;
scsi_hd_asc = 0;
scsi_hd_ascq = 0;
}
int scsi_hd_pre_execution_check(uint8_t id, uint8_t *cdb)
{
int ready = 1;
if (((shdc[id].request_length >> 5) & 7) != hdc[id].scsi_lun)
{
scsi_hd_log("SCSI HD %i: Attempting to execute a unknown command targeted at SCSI LUN %i\n", id, ((shdc[id].request_length >> 5) & 7));
scsi_hd_invalid_lun(id);
return 0;
}
if (!(scsi_hd_command_flags[cdb[0]] & IMPLEMENTED))
{
scsi_hd_log("SCSI HD %i: Attempting to execute unknown command %02X\n", id, cdb[0]);
/* pclog("SCSI HD %i: Attempting to execute unknown command %02X (%02X %02X)\n", id, cdb[0], ((cdb[1] >> 3) & 1) ? 0 : 1, cdb[2] & 0x3F); */
scsi_hd_illegal_opcode(id);
return 0;
}
if (hdc[id].bus == HDD_BUS_SCSI_REMOVABLE)
{
/* Removable disk, set ready state. */
if (wcslen(hdc[id].fn) > 0)
{
ready = 1;
}
else
{
ready = 0;
}
}
else
{
/* Fixed disk, clear UNIT ATTENTION, just in case it might have been set when the disk was removable). */
shdc[id].unit_attention = 0;
}
if (!ready && shdc[id].unit_attention)
{
/* If the drive is not ready, there is no reason to keep the
UNIT ATTENTION condition present, as we only use it to mark
disc changes. */
shdc[id].unit_attention = 0;
}
/* If the UNIT ATTENTION condition is set and the command does not allow
execution under it, error out and report the condition. */
if (shdc[id].unit_attention == 1)
{
/* Only increment the unit attention phase if the command can not pass through it. */
if (!(scsi_hd_command_flags[cdb[0]] & ALLOW_UA))
{
/* scsi_hd_log("SCSI HD %i: Unit attention now 2\n", id); */
shdc[id].unit_attention = 2;
scsi_hd_log("SCSI HD %i: UNIT ATTENTION: Command %02X not allowed to pass through\n", id, cdb[0]);
scsi_hd_unit_attention(id);
return 0;
}
}
else if (shdc[id].unit_attention == 2)
{
if (cdb[0] != GPCMD_REQUEST_SENSE)
{
/* scsi_hd_log("SCSI HD %i: Unit attention now 0\n", id); */
shdc[id].unit_attention = 0;
}
}
/* Unless the command is REQUEST SENSE, clear the sense. This will *NOT*
the UNIT ATTENTION condition if it's set. */
if (cdb[0] != GPCMD_REQUEST_SENSE)
{
scsi_hd_sense_clear(id, cdb[0]);
}
/* Next it's time for NOT READY. */
if ((scsi_hd_command_flags[cdb[0]] & CHECK_READY) && !ready)
{
scsi_hd_log("SCSI HD %i: Not ready (%02X)\n", id, cdb[0]);
scsi_hd_not_ready(id);
return 0;
}
scsi_hd_log("SCSI HD %i: Continuing with command\n", id);
return 1;
}
static void scsi_hd_seek(uint8_t id, uint32_t pos)
{
/* scsi_hd_log("SCSI HD %i: Seek %08X\n", id, pos); */
hdd_image_seek(id, pos);
}
static void scsi_hd_rezero(uint8_t id)
{
if (id == 255)
{
return;
}
shdc[id].sector_pos = shdc[id].sector_len = 0;
scsi_hd_seek(id, 0);
}
void scsi_hd_reset(uint8_t id)
{
scsi_hd_rezero(id);
shdc[id].status = 0;
shdc[id].callback = 0;
shdc[id].packet_status = 0xff;
}
void scsi_hd_request_sense(uint8_t id, uint8_t *buffer, uint8_t alloc_length)
{
/*Will return 18 bytes of 0*/
if (alloc_length != 0)
{
memset(buffer, 0, alloc_length);
memcpy(buffer, shdc[id].sense, alloc_length);
}
buffer[0] = 0x70;
if (shdc[id].unit_attention && (scsi_hd_sense_key == 0))
{
buffer[2]=SENSE_UNIT_ATTENTION;
buffer[12]=ASC_MEDIUM_MAY_HAVE_CHANGED;
buffer[13]=0x00;
}
/* scsi_hd_log("SCSI HD %i: Reporting sense: %02X %02X %02X\n", id, hdbufferb[2], hdbufferb[12], hdbufferb[13]); */
if (buffer[2] == SENSE_UNIT_ATTENTION)
{
/* If the last remaining sense is unit attention, clear
that condition. */
shdc[id].unit_attention = 0;
}
/* Clear the sense stuff as per the spec. */
scsi_hd_sense_clear(id, GPCMD_REQUEST_SENSE);
}
void scsi_hd_request_sense_for_scsi(uint8_t id, uint8_t *buffer, uint8_t alloc_length)
{
int ready = 1;
if (hdc[id].bus == HDD_BUS_SCSI_REMOVABLE)
{
/* Removable disk, set ready state. */
if (wcslen(hdc[id].fn) > 0)
{
ready = 1;
}
else
{
ready = 0;
}
}
else
{
/* Fixed disk, clear UNIT ATTENTION, just in case it might have been set when the disk was removable). */
shdc[id].unit_attention = 0;
}
if (!ready && shdc[id].unit_attention)
{
/* If the drive is not ready, there is no reason to keep the
UNIT ATTENTION condition present, as we only use it to mark
disc changes. */
shdc[id].unit_attention = 0;
}
/* Do *NOT* advance the unit attention phase. */
scsi_hd_request_sense(id, buffer, alloc_length);
}
void scsi_hd_command(uint8_t id, uint8_t *cdb)
{
/* uint8_t *hdbufferb = (uint8_t *) shdc[id].buffer; */
uint8_t *hdbufferb = SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].CmdBuffer;
uint32_t len;
int pos=0;
int max_len;
unsigned idx = 0;
unsigned size_idx;
unsigned preamble_len;
uint32_t alloc_length;
char device_identify[9] = { '8', '6', 'B', '_', 'H', 'D', '0', '0', 0 };
char device_identify_ex[15] = { '8', '6', 'B', '_', 'H', 'D', '0', '0', ' ', 'v', '1', '.', '0', '0', 0 };
uint8_t *tempbuffer;
uint32_t last_sector = 0;
#if 0
int CdbLength;
#endif
last_sector = hdd_image_get_last_sector(id);
shdc[id].status &= ~ERR_STAT;
shdc[id].packet_len = 0;
shdc[id].request_pos = 0;
device_identify[6] = (id / 10) + 0x30;
device_identify[7] = (id % 10) + 0x30;
device_identify_ex[6] = (id / 10) + 0x30;
device_identify_ex[7] = (id % 10) + 0x30;
device_identify_ex[10] = EMU_VERSION[0];
device_identify_ex[12] = EMU_VERSION[2];
device_identify_ex[13] = EMU_VERSION[3];
if (hdc[id].bus == HDD_BUS_SCSI_REMOVABLE)
{
device_identify[4] = 'R';
device_identify_ex[4] = 'R';
}
shdc[id].data_pos = 0;
memcpy(shdc[id].current_cdb, cdb, 12);
if (cdb[0] != 0)
{
scsi_hd_log("SCSI HD %i: Command 0x%02X, Sense Key %02X, Asc %02X, Ascq %02X, %i\n", id, cdb[0], scsi_hd_sense_key, scsi_hd_asc, scsi_hd_ascq, ins);
scsi_hd_log("SCSI HD %i: Request length: %04X\n", id, shdc[id].request_length);
#if 0
for (CdbLength = 1; CdbLength < 12; CdbLength++)
{
scsi_hd_log("SCSI HD %i: CDB[%d] = 0x%02X\n", id, CdbLength, cdb[CdbLength]);
}
#endif
}
shdc[id].sector_len = 0;
/* This handles the Not Ready/Unit Attention check if it has to be handled at this point. */
if (scsi_hd_pre_execution_check(id, cdb) == 0)
{
return;
}
switch (cdb[0])
{
case GPCMD_TEST_UNIT_READY:
case GPCMD_FORMAT_UNIT:
case GPCMD_VERIFY_6:
case GPCMD_VERIFY_10:
case GPCMD_VERIFY_12:
scsi_hd_command_complete(id);
break;
case GPCMD_REZERO_UNIT:
shdc[id].sector_pos = shdc[id].sector_len = 0;
scsi_hd_seek(id, 0);
break;
case GPCMD_REQUEST_SENSE:
/* If there's a unit attention condition and there's a buffered not ready, a standalone REQUEST SENSE
should forget about the not ready, and report unit attention straight away. */
scsi_hd_request_sense(id, hdbufferb, cdb[4]);
scsi_hd_data_command_finish(id, 18, 18, cdb[4], 0);
break;
case GPCMD_MECHANISM_STATUS:
len = (cdb[7] << 16) | (cdb[8] << 8) | cdb[9];
memset(hdbufferb, 0, 8);
hdbufferb[5] = 1;
scsi_hd_data_command_finish(id, 8, 8, len, 0);
break;
case GPCMD_READ_6:
case GPCMD_READ_10:
case GPCMD_READ_12:
switch(cdb[0])
{
case GPCMD_READ_6:
shdc[id].sector_len = cdb[4];
shdc[id].sector_pos = ((((uint32_t) cdb[1]) & 0x1f) << 16) | (((uint32_t) cdb[2]) << 8) | ((uint32_t) cdb[3]);
break;
case GPCMD_READ_10:
shdc[id].sector_len = (cdb[7] << 8) | cdb[8];
shdc[id].sector_pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
break;
case GPCMD_READ_12:
shdc[id].sector_len = (((uint32_t) cdb[6]) << 24) | (((uint32_t) cdb[7]) << 16) | (((uint32_t) cdb[8]) << 8) | ((uint32_t) cdb[9]);
shdc[id].sector_pos = (((uint32_t) cdb[2]) << 24) | (((uint32_t) cdb[3]) << 16) | (((uint32_t) cdb[4]) << 8) | ((uint32_t) cdb[5]);
break;
}
if ((shdc[id].sector_pos > last_sector) || ((shdc[id].sector_pos + shdc[id].sector_len - 1) > last_sector))
{
scsi_hd_lba_out_of_range(id);
return;
}
if ((!shdc[id].sector_len) || (SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength == 0))
{
/* scsi_hd_log("SCSI HD %i: All done - callback set\n", id); */
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
shdc[id].callback = 20 * SCSI_TIME;
break;
}
max_len = shdc[id].sector_len;
shdc[id].requested_blocks = max_len;
alloc_length = shdc[id].packet_len = max_len << 9;
if ((shdc[id].requested_blocks > 0) && (SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength > 0))
{
if (alloc_length > SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength)
{
hdd_image_read(id, shdc[id].sector_pos, SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength >> 9, hdbufferb);
}
else
{
hdd_image_read(id, shdc[id].sector_pos, max_len, hdbufferb);
}
}
if (shdc[id].requested_blocks > 1)
{
scsi_hd_data_command_finish(id, alloc_length, alloc_length / shdc[id].requested_blocks, alloc_length, 0);
}
else
{
scsi_hd_data_command_finish(id, alloc_length, alloc_length, alloc_length, 0);
}
shdc[id].all_blocks_total = shdc[id].block_total;
if (shdc[id].packet_status != CDROM_PHASE_COMPLETE)
{
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 1);
}
else
{
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 0);
}
return;
case GPCMD_WRITE_6:
case GPCMD_WRITE_10:
case GPCMD_WRITE_12:
if ((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) && hdc[id].wp)
{
scsi_hd_write_protected(id);
return;
}
switch(cdb[0])
{
case GPCMD_WRITE_6:
shdc[id].sector_len = cdb[4];
shdc[id].sector_pos = ((((uint32_t) cdb[1]) & 0x1f) << 16) | (((uint32_t) cdb[2]) << 8) | ((uint32_t) cdb[3]);
break;
case GPCMD_WRITE_10:
shdc[id].sector_len = (cdb[7] << 8) | cdb[8];
shdc[id].sector_pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
scsi_hd_log("SCSI HD %i: Length: %i, LBA: %i\n", id, shdc[id].sector_len, shdc[id].sector_pos);
break;
case GPCMD_WRITE_12:
shdc[id].sector_len = (((uint32_t) cdb[6]) << 24) | (((uint32_t) cdb[7]) << 16) | (((uint32_t) cdb[8]) << 8) | ((uint32_t) cdb[9]);
shdc[id].sector_pos = (((uint32_t) cdb[2]) << 24) | (((uint32_t) cdb[3]) << 16) | (((uint32_t) cdb[4]) << 8) | ((uint32_t) cdb[5]);
break;
}
if ((shdc[id].sector_pos > last_sector) || ((shdc[id].sector_pos + shdc[id].sector_len - 1) > last_sector))
{
scsi_hd_lba_out_of_range(id);
return;
}
if ((!shdc[id].sector_len) || (SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength == 0))
{
/* scsi_hd_log("SCSI HD %i: All done - callback set\n", id); */
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
shdc[id].callback = 20 * SCSI_TIME;
break;
}
max_len = shdc[id].sector_len;
shdc[id].requested_blocks = max_len;
alloc_length = shdc[id].packet_len = max_len << 9;
if ((shdc[id].requested_blocks > 0) && (SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength > 0))
{
if (alloc_length > SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength)
{
hdd_image_write(id, shdc[id].sector_pos, SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength >> 9, hdbufferb);
}
else
{
hdd_image_write(id, shdc[id].sector_pos, max_len, hdbufferb);
}
}
if (shdc[id].requested_blocks > 1)
{
scsi_hd_data_command_finish(id, alloc_length, alloc_length / shdc[id].requested_blocks, alloc_length, 1);
}
else
{
scsi_hd_data_command_finish(id, alloc_length, alloc_length, alloc_length, 1);
}
shdc[id].all_blocks_total = shdc[id].block_total;
if (shdc[id].packet_status != CDROM_PHASE_COMPLETE)
{
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 1);
}
else
{
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 0);
}
return;
case GPCMD_START_STOP_UNIT:
if (hdc[id].bus != HDD_BUS_SCSI_REMOVABLE)
{
scsi_hd_illegal_opcode(id);
break;
}
switch(cdb[4] & 3)
{
case 0: /* Stop the disc. */
case 1: /* Start the disc and read the TOC. */
break;
case 2: /* Eject the disc if possible. */
removable_disk_eject(id);
break;
case 3: /* Load the disc (close tray). */
removable_disk_reload(id);
break;
}
scsi_hd_command_complete(id);
break;
case GPCMD_INQUIRY:
max_len = cdb[3];
max_len <<= 8;
max_len |= cdb[4];
if ((!max_len) || (SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength == 0))
{
/* scsi_hd_log("SCSI HD %i: All done - callback set\n", id); */
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
shdc[id].callback = 20 * SCSI_TIME;
break;
}
tempbuffer = malloc(1024);
if (cdb[1] & 1)
{
preamble_len = 4;
size_idx = 3;
tempbuffer[idx++] = 05;
tempbuffer[idx++] = cdb[2];
tempbuffer[idx++] = 0;
idx++;
switch (cdb[2])
{
case 0x00:
tempbuffer[idx++] = 0x00;
tempbuffer[idx++] = 0x83;
break;
case 0x83:
if (idx + 24 > max_len)
{
scsi_hd_data_phase_error(id);
return;
}
tempbuffer[idx++] = 0x02;
tempbuffer[idx++] = 0x00;
tempbuffer[idx++] = 0x00;
tempbuffer[idx++] = 20;
ide_padstr8(hdbufferb + idx, 20, "53R141"); /* Serial */
idx += 20;
if (idx + 72 > cdb[4])
{
goto atapi_out;
}
tempbuffer[idx++] = 0x02;
tempbuffer[idx++] = 0x01;
tempbuffer[idx++] = 0x00;
tempbuffer[idx++] = 68;
ide_padstr8(tempbuffer + idx, 8, EMU_NAME); /* Vendor */
idx += 8;
ide_padstr8(tempbuffer + idx, 40, device_identify_ex); /* Product */
idx += 40;
ide_padstr8(tempbuffer + idx, 20, "53R141"); /* Product */
idx += 20;
break;
default:
scsi_hd_log("INQUIRY: Invalid page: %02X\n", cdb[2]);
scsi_hd_invalid_field(id);
return;
}
}
else
{
preamble_len = 5;
size_idx = 4;
memset(tempbuffer, 0, 8);
tempbuffer[0] = 0; /*SCSI HD*/
if (hdc[id].bus == HDD_BUS_SCSI_REMOVABLE)
{
tempbuffer[1] = 0x80; /*Removable*/
}
else
{
tempbuffer[1] = 0; /*Fixed*/
}
tempbuffer[2] = 0x02; /*SCSI-2 compliant*/
tempbuffer[3] = 0x02;
tempbuffer[4] = 31;
ide_padstr8(tempbuffer + 8, 8, EMU_NAME); /* Vendor */
ide_padstr8(tempbuffer + 16, 16, device_identify); /* Product */
ide_padstr8(tempbuffer + 32, 4, EMU_VERSION); /* Revision */
idx = 36;
}
atapi_out:
tempbuffer[size_idx] = idx - preamble_len;
len=idx;
if (len > max_len)
{
len = max_len;
}
if (len > SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength)
{
len = SCSIDevices[hdc[id].scsi_id][hdc[id].scsi_lun].InitLength;
}
memcpy(hdbufferb, tempbuffer, len);
free(tempbuffer);
scsi_hd_data_command_finish(id, len, len, max_len, 0);
break;
case GPCMD_PREVENT_REMOVAL:
scsi_hd_command_complete(id);
break;
case GPCMD_SEEK_6:
case GPCMD_SEEK_10:
switch(cdb[0])
{
case GPCMD_SEEK_6:
pos = (cdb[2] << 8) | cdb[3];
break;
case GPCMD_SEEK_10:
pos = (cdb[2] << 24) | (cdb[3]<<16) | (cdb[4]<<8) | cdb[5];
break;
}
scsi_hd_seek(id, pos);
scsi_hd_command_complete(id);
break;
case GPCMD_READ_CDROM_CAPACITY:
if (scsi_hd_read_capacity(id, shdc[id].current_cdb, hdbufferb, &len) == 0)
{
return;
}
scsi_hd_data_command_finish(id, len, len, len, 0);
break;
default:
/* pclog("SCSI HD %i: Attempting to execute pseudo-implemented command %02X\n", id, cdb[0]); */
scsi_hd_illegal_opcode(id);
break;
}
/* scsi_hd_log("SCSI HD %i: Phase: %02X, request length: %i\n", shdc[id].phase, shdc[id].request_length); */
}
void scsi_hd_callback(uint8_t id);
/* If the result is 1, issue an IRQ, otherwise not. */
void scsi_hd_callback(uint8_t id)
{
switch(shdc[id].packet_status)
{
case CDROM_PHASE_IDLE:
scsi_hd_log("SCSI HD %i: PHASE_IDLE\n", id);
shdc[id].pos=0;
shdc[id].phase = 1;
shdc[id].status = READY_STAT | DRQ_STAT | (shdc[id].status & ERR_STAT);
return;
case CDROM_PHASE_COMPLETE:
scsi_hd_log("SCSI HD %i: PHASE_COMPLETE\n", id);
shdc[id].status = READY_STAT;
shdc[id].phase = 3;
shdc[id].packet_status = 0xFF;
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 0);
return;
case CDROM_PHASE_DATA_OUT:
scsi_hd_log("SCSI HD %i: PHASE_DATA_OUT\n", id);
shdc[id].status = READY_STAT | DRQ_STAT | (shdc[id].status & ERR_STAT);
shdc[id].phase = 0;
return;
case CDROM_PHASE_DATA_OUT_DMA:
scsi_hd_log("SCSI HD %i: PHASE_DATA_OUT_DMA\n", id);
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
shdc[id].status = READY_STAT;
shdc[id].phase = 3;
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 0);
return;
case CDROM_PHASE_DATA_IN:
scsi_hd_log("SCSI HD %i: PHASE_DATA_IN\n", id);
shdc[id].status = READY_STAT | DRQ_STAT | (shdc[id].status & ERR_STAT);
shdc[id].phase = 2;
return;
case CDROM_PHASE_DATA_IN_DMA:
scsi_hd_log("SCSI HD %i: PHASE_DATA_IN_DMA\n", id);
shdc[id].packet_status = CDROM_PHASE_COMPLETE;
shdc[id].status = READY_STAT;
shdc[id].phase = 3;
update_status_bar_icon((hdc[id].bus == HDD_BUS_SCSI_REMOVABLE) ? (SB_RDISK | id) : (SB_HDD | HDD_BUS_SCSI), 0);
return;
case CDROM_PHASE_ERROR:
scsi_hd_log("SCSI HD %i: PHASE_ERROR\n", id);
shdc[id].status = READY_STAT | ERR_STAT;
shdc[id].phase = 3;
return;
}
}
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