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cdrom.c
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cdrom.c
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/*
* VARCem Virtual ARchaeological Computer EMulator.
* An emulator of (mostly) x86-based PC systems and devices,
* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
* spanning the era between 1981 and 1995.
*
* This file is part of the VARCem Project.
*
* Implementation of the CD-ROM drive with SCSI(-like)
* commands, for both ATAPI and SCSI usage.
*
* Version: @(#)cdrom.c 1.0.15 2018/05/08
*
* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Miran Grca, <mgrca8@gmail.com>
* Sarah Walker, <tommowalker@tommowalker.co.uk>
*
* Copyright 2017,2018 Fred N. van Kempen.
* Copyright 2016-2018 Miran Grca.
* Copyright 2008-2018 Sarah Walker.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the:
*
* Free Software Foundation, Inc.
* 59 Temple Place - Suite 330
* Boston, MA 02111-1307
* USA.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <wchar.h>
#define HAVE_STDARG_H
#include "../../emu.h"
#include "../../version.h"
#include "../../timer.h"
#include "../../device.h"
#include "../../nvr.h"
#include "../../ui/ui.h"
#include "../../plat.h"
#include "../system/intel_piix.h"
#include "../scsi/scsi.h"
#include "../disk/hdc.h"
#include "../disk/hdc_ide.h"
#include "cdrom.h"
#include "cdrom_image.h"
#include "cdrom_null.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 */
cdrom_t *cdrom[CDROM_NUM];
cdrom_image_t cdrom_image[CDROM_NUM];
#ifdef USE_CDROM_IOCTL
cdrom_ioctl_t cdrom_ioctl[CDROM_NUM];
#endif
cdrom_drive_t cdrom_drives[CDROM_NUM];
uint8_t atapi_cdrom_drives[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
uint8_t scsi_cdrom_drives[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 } };
/*
* List of usable CD-ROM speeds (from Wikipedia):
*
* Speed KiB/s Mbit/s RPM
* 1× 150 1.2288 200–500
* 2× 300 2.4576 400-1,000
* 4× 600 4.9152 800–2,000
* 6x ? ? ?
* 8× 1,200 9.8304 1,600–4,000
* 10× 1,500 12.288 2,000–5,000
* 12× 1,800 14.7456 2,400–6,000
* 16x ? ? ?
* 20× 1,200–3,000 up to 24.576 4,000 (CAV)
* 24x ? ? ?
* 32× 1,920–4,800 up to 39.3216 6,400 (CAV)
* 36× 2,160–5,400 up to 44.2368 7,200 (CAV)
* 40× 2,400–6,000 up to 49.152 8,000 (CAV)
* 44x ? ? ?
* 48× 2,880–7,200 up to 58.9824 9,600 (CAV)
* 52× 3,120–7,800 up to 63.8976 10,400 (CAV)
* 56× 3,360–8,400 up to 68.8128 11,200 (CAV)
* 72× 6,750–10,800 up to 88.4736 2,000 (multi-beam)
*
* We discard the latter two ones.
*/
const cdrom_speed_t cdrom_speeds[] = {
{ 1, 140.0, 1446.0 },
{ 2, 160.0, 1000.0 },
{ 4, 112.0, 675.0 },
{ 6, 112.0, 675.0 },
{ 8, 112.0, 675.0 },
{ 10, 112.0, 675.0 },
{ 12, 75.0, 400.0 },
{ 16, 58.0, 350.0 },
{ 20, 50.0, 300.0 },
{ 24, 45.0, 270.0 },
{ 32, 45.0, 270.0 },
{ 36, 50.0, 300.0 },
{ 40, 50.0, 300.0 },
{ 44, 50.0, 300.0 },
{ 48, 50.0, 300.0 },
{ 52, 45.0, 270.0 },
{ -1, 0.0, 0.0 },
};
#pragma pack(push,1)
static struct
{
uint8_t opcode;
uint8_t polled;
uint8_t reserved2[2];
uint8_t class;
uint8_t reserved3[2];
uint16_t len;
uint8_t control;
} *gesn_cdb;
#pragma pack(pop)
#pragma pack(push,1)
static struct
{
uint16_t len;
uint8_t notification_class;
uint8_t supported_events;
} *gesn_event_header;
#pragma pack(pop)
/* Table of all SCSI commands and their flags, needed for the new disc change / not ready handler. */
const uint8_t cdrom_command_flags[0x100] =
{
IMPLEMENTED | CHECK_READY | NONDATA,
IMPLEMENTED | ALLOW_UA | NONDATA | SCSI_ONLY,
0,
IMPLEMENTED | ALLOW_UA,
0, 0, 0, 0,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY | NONDATA,
0, 0, 0, 0, 0, 0,
IMPLEMENTED | ALLOW_UA,
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY,
0,
IMPLEMENTED,
0, 0, 0, 0,
IMPLEMENTED,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY,
0, 0, 0, 0, 0, 0,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY | NONDATA,
0, 0, 0,
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY, /* Read TOC - can get through UNIT_ATTENTION, per VIDE-CDD.SYS
NOTE: The ATAPI reference says otherwise, but I think this is a question of
interpreting things right - the UNIT ATTENTION condition we have here
is a tradition from not ready to ready, by definition the drive
eventually becomes ready, make the condition go away. */
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | ALLOW_UA,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY,
0,
IMPLEMENTED | ALLOW_UA,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED,
0, 0, 0, 0,
IMPLEMENTED,
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,
0, 0,
IMPLEMENTED | CHECK_READY,
0, 0, 0, 0,
IMPLEMENTED | CHECK_READY,
0,
IMPLEMENTED | CHECK_READY | NONDATA | SCSI_ONLY,
0, 0, 0, 0,
IMPLEMENTED | CHECK_READY | ATAPI_ONLY,
0, 0, 0,
IMPLEMENTED | CHECK_READY | ATAPI_ONLY,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED,
IMPLEMENTED | CHECK_READY,
IMPLEMENTED | CHECK_READY,
0, 0,
IMPLEMENTED | CHECK_READY | SCSI_ONLY,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED | CHECK_READY | SCSI_ONLY,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
IMPLEMENTED | SCSI_ONLY,
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
};
uint64_t cdrom_mode_sense_page_flags = (1LL << GPMODE_R_W_ERROR_PAGE) | (1LL << GPMODE_CDROM_PAGE) | (1LL << GPMODE_CDROM_AUDIO_PAGE) | (1LL << GPMODE_CAPABILITIES_PAGE) | (1LL << GPMODE_ALL_PAGES);
static const mode_sense_pages_t cdrom_mode_sense_pages_default =
{ {
{ 0, 0 },
{ GPMODE_R_W_ERROR_PAGE, 6, 0, 5, 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 },
{ GPMODE_CDROM_PAGE, 6, 0, 1, 0, 60, 0, 75 },
{ 0x8E, 0xE, 4, 0, 0, 0, 0, 75, 1, 0xFF, 2, 0xFF, 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 },
{ GPMODE_CAPABILITIES_PAGE, 0x12, 0, 0, 1, 0, 0, 0, 0x02, 0xC2, 1, 0, 0, 0, 0x02, 0xC2, 0, 0, 0, 0 }
} };
static const mode_sense_pages_t cdrom_mode_sense_pages_default_scsi =
{ {
{ 0, 0 },
{ GPMODE_R_W_ERROR_PAGE, 6, 0, 5, 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 },
{ GPMODE_CDROM_PAGE, 6, 0, 1, 0, 60, 0, 75 },
{ 0x8E, 0xE, 5, 4, 0,0x80,0, 75, 1, 0xFF, 2, 0xFF, 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 },
{ GPMODE_CAPABILITIES_PAGE, 0x12, 0, 0, 1, 0, 0, 0, 0x02, 0xC2, 1, 0, 0, 0, 0x02, 0xC2, 0, 0, 0, 0 }
} };
static const mode_sense_pages_t cdrom_mode_sense_pages_changeable =
{ {
{ 0, 0 },
{ GPMODE_R_W_ERROR_PAGE, 6, 0, 5, 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 },
{ GPMODE_CDROM_PAGE, 6, 0, 1, 0, 60, 0, 75 },
{ 0x8E, 0xE, 5, 4, 0,0x80,0, 75, 1, 0xFF, 2, 0xFF, 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 },
{ GPMODE_CAPABILITIES_PAGE, 0x12, 0, 0, 1, 0, 0, 0, 0x02, 0xC2, 1, 0, 0, 0, 0x02, 0xC2, 0, 0, 0, 0 }
} };
static mode_sense_pages_t cdrom_mode_sense_pages_saved[CDROM_NUM];
#ifdef ENABLE_CDROM_LOG
int cdrom_do_log = ENABLE_CDROM_LOG;
#endif
static void
cdrom_log(const char *format, ...)
{
#ifdef ENABLE_CDROM_LOG
va_list ap;
if (cdrom_do_log)
{
va_start(ap, format);
pclog_ex(format, ap);
va_end(ap);
}
#endif
}
int
cdrom_speed_idx(int realspeed)
{
int idx;
for (idx = 0; cdrom_speeds[idx].speed > 0; idx++)
if (cdrom_speeds[idx].speed == realspeed)
return(idx);
return(-1);
}
int find_cdrom_for_channel(uint8_t channel)
{
uint8_t i = 0;
for (i = 0; i < CDROM_NUM; i++) {
if (((cdrom_drives[i].bus_type == CDROM_BUS_ATAPI_PIO_ONLY) || (cdrom_drives[i].bus_type == CDROM_BUS_ATAPI_PIO_AND_DMA)) && (cdrom_drives[i].ide_channel == channel))
return i;
}
return 0xff;
}
void cdrom_init(int id, int cdb_len_setting);
void build_atapi_cdrom_map(void)
{
uint8_t i = 0;
memset(atapi_cdrom_drives, 0xff, 8);
for (i = 0; i < 8; i++) {
atapi_cdrom_drives[i] = find_cdrom_for_channel(i);
if (atapi_cdrom_drives[i] != 0xff)
cdrom_init(atapi_cdrom_drives[i], 12);
}
}
int find_cdrom_for_scsi_id(uint8_t scsi_id, uint8_t scsi_lun)
{
uint8_t i = 0;
for (i = 0; i < CDROM_NUM; i++) {
if ((cdrom_drives[i].bus_type == CDROM_BUS_SCSI) && (cdrom_drives[i].scsi_device_id == scsi_id) && (cdrom_drives[i].scsi_device_lun == scsi_lun))
return i;
}
return 0xff;
}
void build_scsi_cdrom_map(void)
{
uint8_t i = 0;
uint8_t j = 0;
for (i = 0; i < 16; i++)
memset(scsi_cdrom_drives[i], 0xff, 8);
for (i = 0; i < 16; i++) {
for (j = 0; j < 8; j++) {
scsi_cdrom_drives[i][j] = find_cdrom_for_scsi_id(i, j);
if (scsi_cdrom_drives[i][j] != 0xff)
cdrom_init(scsi_cdrom_drives[i][j], 12);
}
}
}
void cdrom_set_callback(uint8_t id)
{
if (cdrom_drives[id].bus_type != CDROM_BUS_SCSI)
ide_set_callback(cdrom_drives[id].ide_channel, cdrom[id]->callback);
}
void cdrom_set_cdb_len(int id, int cdb_len)
{
cdrom[id]->cdb_len = cdb_len;
}
void cdrom_reset_cdb_len(int id)
{
cdrom[id]->cdb_len = cdrom[id]->cdb_len_setting ? 16 : 12;
}
void cdrom_set_signature(int id)
{
cdrom_t *dev;
if (id >= CDROM_NUM)
return;
dev = cdrom[id];
dev->phase = 1;
dev->request_length = 0xEB14;
}
void cdrom_destroy_drives(void)
{
int i;
for (i = 0; i < CDROM_NUM; i++) {
if (cdrom[i] != NULL) {
free(cdrom[i]);
cdrom[i] = NULL;
}
}
}
void cdrom_init(int id, int cdb_len_setting)
{
cdrom_t *dev;
uint8_t *trcbuf;
uint32_t tcap;
if (id >= CDROM_NUM)
return;
dev = cdrom[id];
tcap = dev->cdrom_capacity;
trcbuf = (uint8_t *) malloc(16);
memcpy(trcbuf, dev->rcbuf, 16);
memset(dev, 0x00, sizeof(cdrom_t));
memcpy(dev->rcbuf, trcbuf, 16);
free(trcbuf);
dev->cdrom_capacity = tcap;
dev->requested_blocks = 1;
if (cdb_len_setting <= 1)
dev->cdb_len_setting = cdb_len_setting;
cdrom_reset_cdb_len(id);
dev->cd_status = CD_STATUS_EMPTY;
dev->sense[0] = 0xf0;
dev->sense[7] = 10;
cdrom_drives[id].bus_mode = 0;
if (cdrom_drives[id].bus_type >= CDROM_BUS_ATAPI_PIO_AND_DMA)
cdrom_drives[id].bus_mode |= 2;
if (cdrom_drives[id].bus_type < CDROM_BUS_SCSI)
cdrom_drives[id].bus_mode |= 1;
cdrom_log("CD-ROM %i: Bus type %i, bus mode %i\n", id, cdrom_drives[id].bus_type, cdrom_drives[id].bus_mode);
if (cdrom_drives[id].bus_type < CDROM_BUS_SCSI)
cdrom_set_signature(id);
dev->status = READY_STAT | DSC_STAT;
dev->pos = 0;
dev->packet_status = 0xff;
cdrom_sense_key = cdrom_asc = cdrom_ascq = dev->unit_attention = 0;
dev->cdb_len_setting = 0;
dev->cdb_len = 12;
dev->cur_speed = cdrom_drives[id].speed_idx;
}
int cdrom_supports_pio(int id)
{
return (cdrom_drives[id].bus_mode & 1);
}
int cdrom_supports_dma(int id)
{
return (cdrom_drives[id].bus_mode & 2);
}
/* Returns: 0 for none, 1 for PIO, 2 for DMA. */
int cdrom_current_mode(int id)
{
cdrom_t *dev = cdrom[id];
if (!cdrom_supports_pio(id) && !cdrom_supports_dma(id))
return 0;
if (cdrom_supports_pio(id) && !cdrom_supports_dma(id)) {
cdrom_log("CD-ROM %i: Drive does not support DMA, setting to PIO\n", id);
return 1;
}
if (!cdrom_supports_pio(id) && cdrom_supports_dma(id))
return 2;
if (cdrom_supports_pio(id) && cdrom_supports_dma(id)) {
cdrom_log("CD-ROM %i: Drive supports both, setting to %s\n", id, (dev->features & 1) ? "DMA" : "PIO", id);
return (dev->features & 1) ? 2 : 1;
}
return 0;
}
/* Translates ATAPI status (ERR_STAT flag) to SCSI status. */
int cdrom_CDROM_PHASE_to_scsi(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (dev->status & ERR_STAT)
return SCSI_STATUS_CHECK_CONDITION;
else
return SCSI_STATUS_OK;
}
/* Translates ATAPI phase (DRQ, I/O, C/D) to SCSI phase (MSG, C/D, I/O). */
int cdrom_atapi_phase_to_scsi(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (dev->status & 8) {
switch (dev->phase & 3) {
case 0:
return 0;
case 1:
return 2;
case 2:
return 1;
case 3:
return 7;
}
} else {
if ((dev->phase & 3) == 3)
return 3;
else
return 4;
}
return 0;
}
int cdrom_lba_to_msf_accurate(int lba)
{
int temp_pos;
int m, s, f;
temp_pos = lba + 150;
f = temp_pos % 75;
temp_pos -= f;
temp_pos /= 75;
s = temp_pos % 60;
temp_pos -= s;
temp_pos /= 60;
m = temp_pos;
return ((m << 16) | (s << 8) | f);
}
uint32_t cdrom_mode_sense_get_channel(uint8_t id, int channel)
{
return cdrom_mode_sense_pages_saved[id].pages[GPMODE_CDROM_AUDIO_PAGE][channel ? 10 : 8];
}
uint32_t cdrom_mode_sense_get_volume(uint8_t id, int channel)
{
return cdrom_mode_sense_pages_saved[id].pages[GPMODE_CDROM_AUDIO_PAGE][channel ? 11 : 9];
}
void cdrom_mode_sense_load(uint8_t id)
{
FILE *f;
wchar_t file_name[512];
int i;
memset(&cdrom_mode_sense_pages_saved[id], 0, sizeof(mode_sense_pages_t));
for (i = 0; i < 0x3f; i++) {
if (cdrom_mode_sense_pages_default.pages[i][1] != 0) {
if (cdrom_drives[id].bus_type == CDROM_BUS_SCSI)
memcpy(cdrom_mode_sense_pages_saved[id].pages[i], cdrom_mode_sense_pages_default_scsi.pages[i], cdrom_mode_sense_pages_default_scsi.pages[i][1] + 2);
else
memcpy(cdrom_mode_sense_pages_saved[id].pages[i], cdrom_mode_sense_pages_default.pages[i], cdrom_mode_sense_pages_default.pages[i][1] + 2);
}
}
memset(file_name, 0, 512 * sizeof(wchar_t));
if (cdrom_drives[id].bus_type == CDROM_BUS_SCSI)
swprintf(file_name, 512, L"scsi_cdrom_%02i_mode_sense_bin", id);
else
swprintf(file_name, 512, L"cdrom_%02i_mode_sense_bin", id);
f = plat_fopen(nvr_path(file_name), L"rb");
if (f) {
fread(cdrom_mode_sense_pages_saved[id].pages[GPMODE_CDROM_AUDIO_PAGE], 1, 0x10, f);
fclose(f);
}
}
void cdrom_mode_sense_save(uint8_t id)
{
FILE *f;
wchar_t file_name[512];
memset(file_name, 0, 512 * sizeof(wchar_t));
if (cdrom_drives[id].bus_type == CDROM_BUS_SCSI)
swprintf(file_name, 512, L"scsi_cdrom_%02i_mode_sense_bin", id);
else
swprintf(file_name, 512, L"cdrom_%02i_mode_sense_bin", id);
f = plat_fopen(nvr_path(file_name), L"wb");
if (f) {
fwrite(cdrom_mode_sense_pages_saved[id].pages[GPMODE_CDROM_AUDIO_PAGE], 1, 0x10, f);
fclose(f);
}
}
static void cdrom_command_complete(uint8_t id);
uint8_t cdrom_read_capacity_cdb[12] = {0x25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
static int cdrom_pass_through(uint8_t id, uint32_t *len, uint8_t *cdb, uint8_t *buffer);
int cdrom_read_capacity(uint8_t id, uint8_t *cdb, uint8_t *buffer, uint32_t *len)
{
int ret = 0;
int size = 0;
if (cdrom_drives[id].handler->pass_through) {
ret = cdrom_pass_through(id, len, cdb, buffer);
if (!ret)
return 0;
if (*len == 65534)
*len = 8;
} else {
size = cdrom_drives[id].handler->size(id) - 1; /* IMPORTANT: What's returned is the last LBA block. */
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] = 8; /* 2048 = 0x0800 */
*len = 8;
}
return 1;
}
/*SCSI Mode Sense 6/10*/
uint8_t cdrom_mode_sense_read(uint8_t id, uint8_t page_control, uint8_t page, uint8_t pos)
{
switch (page_control) {
case 0:
case 3:
return cdrom_mode_sense_pages_saved[id].pages[page][pos];
break;
case 1:
return cdrom_mode_sense_pages_changeable.pages[page][pos];
break;
case 2:
if (cdrom_drives[id].bus_type == CDROM_BUS_SCSI)
return cdrom_mode_sense_pages_default_scsi.pages[page][pos];
else
return cdrom_mode_sense_pages_default.pages[page][pos];
break;
}
return 0;
}
uint32_t cdrom_mode_sense(uint8_t id, uint8_t *buf, uint32_t pos, uint8_t type, uint8_t block_descriptor_len)
{
cdrom_t *dev = cdrom[id];
uint8_t page_control = (type >> 6) & 3;
int i = 0;
int j = 0;
uint8_t msplen;
type &= 0x3f;
if (block_descriptor_len) {
buf[pos++] = 1; /* Density code. */
buf[pos++] = 0; /* Number of blocks (0 = all). */
buf[pos++] = 0;
buf[pos++] = 0;
buf[pos++] = 0; /* Reserved. */
buf[pos++] = 0; /* Block length (0x800 = 2048 bytes). */
buf[pos++] = 8;
buf[pos++] = 0;
}
for (i = 0; i < 0x40; i++) {
if ((type == GPMODE_ALL_PAGES) || (type == i)) {
if (cdrom_mode_sense_page_flags & (1LL << dev->current_page_code)) {
buf[pos++] = cdrom_mode_sense_read(id, page_control, i, 0);
msplen = cdrom_mode_sense_read(id, page_control, i, 1);
buf[pos++] = msplen;
cdrom_log("CD-ROM %i: MODE SENSE: Page [%02X] length %i\n", id, i, msplen);
for (j = 0; j < msplen; j++) {
if ((i == GPMODE_CAPABILITIES_PAGE) && (j >= 6) && (j <= 7)) {
if (j & 1)
buf[pos++] = ((cdrom_speeds[cdrom_drives[id].speed_idx].speed * 176) & 0xff);
else
buf[pos++] = ((cdrom_speeds[cdrom_drives[id].speed_idx].speed * 176) >> 8);
} else if ((i == GPMODE_CAPABILITIES_PAGE) && (j >= 12) && (j <= 13)) {
if (j & 1)
buf[pos++] = ((cdrom_speeds[dev->cur_speed].speed * 176) & 0xff);
else
buf[pos++] = ((cdrom_speeds[dev->cur_speed].speed * 176) >> 8);
} else
buf[pos++] = cdrom_mode_sense_read(id, page_control, i, 2 + j);
}
}
}
}
return pos;
}
void cdrom_update_request_length(uint8_t id, uint32_t len, uint32_t block_len)
{
cdrom_t *dev = cdrom[id];
uint32_t min_len = 0;
uint32_t bt;
dev->max_transfer_len = dev->request_length;
/* For media access commands, make sure the requested DRQ length matches the block length. */
switch (dev->current_cdb[0]) {
case 0x08:
case 0x28:
case 0xa8:
case 0xb9:
case 0xbe:
/* Make sure total length is not bigger than sum
* of the lengths of all the requested blocks. */
bt = (dev->requested_blocks * block_len);
if (len > bt)
len = bt;
min_len = block_len;
if (len <= block_len) {
/* Total length is less or equal to block length. */
if (dev->max_transfer_len < block_len) {
/* Transfer a minimum of (block size) bytes. */
dev->max_transfer_len = block_len;
dev->packet_len = block_len;
break;
}
}
default:
dev->packet_len = len;
break;
}
/* If the DRQ length is odd, and the total remaining length is bigger, make sure it's even. */
if ((dev->max_transfer_len & 1) && (dev->max_transfer_len < len))
dev->max_transfer_len &= 0xfffe;
/* If the DRQ length is smaller or equal in size to the total remaining length, set it to that. */
if (!dev->max_transfer_len)
dev->max_transfer_len = 65534;
if ((len <= dev->max_transfer_len) && (len >= min_len)) {
dev->request_length = dev->max_transfer_len = len;
}
}
#define MIN_SEEK 2000
#define MAX_SEEK 333333
static double cdrom_seek_time(uint8_t id)
{
cdrom_t *dev = cdrom[id];
uint32_t diff = dev->seek_diff;
double sd = (double) (MAX_SEEK - MIN_SEEK);
if (diff < MIN_SEEK)
return 0.0;
if (diff > MAX_SEEK)
diff = MAX_SEEK;
diff -= MIN_SEEK;
return cdrom_speeds[dev->cur_speed].seek1 +
((cdrom_speeds[dev->cur_speed].seek2 * ((double) diff)) / sd);
}
static double cdrom_bus_speed(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (cdrom_drives[id].bus_type == CDROM_BUS_SCSI) {
dev->callback = -1LL; /* Speed depends on SCSI controller */
return 0.0;
} else if (cdrom_drives[id].bus_type == CDROM_BUS_ATAPI_PIO_AND_DMA) {
if (cdrom_current_mode(id) == 2)
return 66666666.666666666666666; /* 66 MB/s MDMA-2 speed */
else
return 8333333.333333333333333; /* 8.3 MB/s PIO-2 speed */
} else
return 3333333.333333333333333; /* 3.3 MB/s PIO-0 speed */
}
static void cdrom_command_bus(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->status = BUSY_STAT;
dev->phase = 1;
dev->pos = 0;
dev->callback = 1LL * CDROM_TIME;
cdrom_set_callback(id);
}
static void cdrom_command_common(uint8_t id)
{
cdrom_t *dev = cdrom[id];
double bytes_per_second, period;
double dusec;
dev->status = BUSY_STAT;
dev->phase = 1;
dev->pos = 0;
dev->callback = 0LL;
cdrom_log("CD-ROM %i: Current speed: %ix\n", id, dev->cur_speed);
if (dev->packet_status == CDROM_PHASE_COMPLETE) {
cdrom_phase_callback(id);
dev->callback = 0LL;
} else {
switch(dev->current_cdb[0]) {
case GPCMD_REZERO_UNIT:
case 0x0b:
case 0x2b:
/* Seek time is in us. */
period = cdrom_seek_time(id) * ((double) TIMER_USEC);
dev->callback += ((int64_t) period);
cdrom_set_callback(id);
cdrom_log("CD-ROM %i: Seek period: %" PRIu64 " us\n", id, (int64_t)cdrom_seek_time(id));
return;
case 0x08:
case 0x28:
case 0xa8:
/* Seek time is in us. */
period = cdrom_seek_time(id) * ((double) TIMER_USEC);
dev->callback += ((int64_t) period);
cdrom_log("CD-ROM %i: Seek period: %" PRIu64 " us\n", id, (int64_t)cdrom_seek_time(id));
case 0x25:
case 0x42:
case 0x43:
case 0x44:
case 0x51:
case 0x52:
case 0xad:
case 0xb8:
case 0xb9:
case 0xbe:
bytes_per_second = 176.0 * 1024.0;
bytes_per_second *= (double)cdrom_speeds[dev->cur_speed].speed;
break;
default:
bytes_per_second = cdrom_bus_speed(id);
if (bytes_per_second == 0.0) {
dev->callback = -1LL; /* Speed depends on SCSI controller */
return;
}
break;
}
period = 1000000.0 / bytes_per_second;
cdrom_log("CD-ROM %i: Byte transfer period: %" PRIu64 " us\n", id, (int64_t)period);
period = period * (double) (dev->packet_len);
cdrom_log("CD-ROM %i: Sector transfer period: %" PRIu64 " us\n", id, (int64_t)period);
dusec = period * ((double) TIMER_USEC);
dev->callback += ((int64_t) dusec);
}
cdrom_set_callback(id);
}
static void cdrom_command_complete(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->packet_status = CDROM_PHASE_COMPLETE;
cdrom_command_common(id);
}
static void cdrom_command_read(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->packet_status = CDROM_PHASE_DATA_IN;
cdrom_command_common(id);
dev->total_read = 0;
}
static void cdrom_command_read_dma(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->packet_status = CDROM_PHASE_DATA_IN_DMA;
cdrom_command_common(id);
dev->total_read = 0;