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ISO-9660 raw image support for CD/DVD emulation

This commit is contained in:
Troy 2022-06-19 20:02:55 -04:00
parent b00dac7339
commit 953309be30
3 changed files with 552 additions and 216 deletions
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745
src/BlueSCSI.cpp
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@ -39,7 +39,7 @@
#include <SdFat.h>
#include <setjmp.h>
#define DEBUG 0 // 0:No debug information output
#define DEBUG 1 // 0:No debug information output
// 1: Debug information output to USB Serial
// 2: Debug information output to LOG.txt (slow)
@ -98,6 +98,12 @@ SCSI_COMMAND_HANDLER(onWriteBuffer);
SCSI_COMMAND_HANDLER(onReZeroUnit);
SCSI_COMMAND_HANDLER(onSendDiagnostic);
SCSI_COMMAND_HANDLER(onReadDefectData);
SCSI_COMMAND_HANDLER(onReadTOC);
SCSI_COMMAND_HANDLER(onReadDVDStructure);
SCSI_COMMAND_HANDLER(onReadDiscInformation);
static uint32_t MSFtoLBA(const byte *msf);
static void LBAtoMSF(const uint32_t lba, byte *msf);
static void flashError(const unsigned error);
void onBusReset(void);
@ -185,6 +191,23 @@ void readSDCardInfo()
}
}
bool VerifyISOPVD(SCSI_DEVICE *dev, unsigned sector_size, bool mode2)
{
int seek = 16 * sector_size;
if(sector_size > CDROM_COMMON_SECTORSIZE) seek += 16;
if(mode2) seek += 8;
bool ret = false;
dev->m_file->seekSet(seek);
dev->m_file->read(m_buf, 2048);
ret = ((m_buf[0] == 1 && !strncmp((char *)&m_buf[1], "CD001", 5) && m_buf[6] == 1) ||
(m_buf[8] == 1 && !strncmp((char *)&m_buf[9], "CDROM", 5) && m_buf[14] == 1));
dev->m_file->rewind();
return ret;
}
/*
* Open HDD image file
*/
@ -192,32 +215,83 @@ void readSDCardInfo()
bool hddimageOpen(SCSI_DEVICE *dev, FsFile *file,int id,int lun,int blocksize)
{
dev->m_fileSize= 0;
dev->m_offset = 0;
dev->m_blocksize = blocksize;
dev->m_file = file;
dev->m_type = SCSI_DEVICE_HDD;
if(dev->m_file->isOpen())
{
dev->m_fileSize = dev->m_file->size();
dev->m_blockcount = dev->m_fileSize / dev->m_blocksize;
if(dev->m_fileSize>0)
{
// check blocksize dummy file
LOG_FILE.print(" / ");
LOG_FILE.print(dev->m_fileSize);
LOG_FILE.print("bytes / ");
LOG_FILE.print(dev->m_fileSize / 1024);
LOG_FILE.print("KiB / ");
LOG_FILE.print(dev->m_fileSize / 1024 / 1024);
LOG_FILE.println("MiB");
return true; // File opened
}
else
{
LOG_FILE.println(" - file is 0 bytes, can not use.");
dev->m_file->close();
dev->m_fileSize = dev->m_blocksize = 0; // no file
}
if(!dev->m_file->isOpen()) { goto failed; }
dev->m_fileSize = dev->m_file->size();
if(dev->m_fileSize < 1) {
LOG_FILE.println(" - file is 0 bytes, can not use.");
goto failed;
}
if(dev->m_type == SCSI_DEVICE_OPTICAL) {
LOG_FILE.print(" CDROM");
// Borrowed from PCEM
if(VerifyISOPVD(dev, CDROM_COMMON_SECTORSIZE, false)) {
dev->m_blocksize = CDROM_COMMON_SECTORSIZE;
dev->m_mode2 = false;
} else if(VerifyISOPVD(dev, CDROM_RAW_SECTORSIZE, false)) {
dev->m_blocksize = CDROM_RAW_SECTORSIZE;
dev->m_rawblocksize = CDROM_COMMON_SECTORSIZE;
dev->m_mode2 = false;
dev->m_raw = true;
dev->m_offset = 16;
} else if(VerifyISOPVD(dev, 2336, true)) {
dev->m_blocksize = 2336;
dev->m_mode2 = true;
} else if(VerifyISOPVD(dev, CDROM_RAW_SECTORSIZE, true)) {
dev->m_blocksize = CDROM_RAW_SECTORSIZE;
dev->m_mode2 = true;
dev->m_raw = true;
dev->m_offset = 16;
} else {
// Last ditch effort
// size must be less than 700MB
if(dev->m_fileSize > 912579600) {
goto failed;
}
dev->m_raw = true;
if(!(dev->m_fileSize % CDROM_COMMON_SECTORSIZE)) {
// try a multiple of 2048
dev->m_blocksize = CDROM_COMMON_SECTORSIZE;
} else {
// I give up!
LOG_FILE.println(" InvalidISO");
goto failed;
}
}
} else {
LOG_FILE.print(" HDD");
}
dev->m_blockcount = dev->m_fileSize / dev->m_blocksize;
// check blocksize dummy file
LOG_FILE.print(" / ");
LOG_FILE.print(dev->m_fileSize);
LOG_FILE.print("bytes / ");
LOG_FILE.print(dev->m_fileSize / 1024);
LOG_FILE.print("KiB / ");
LOG_FILE.print(dev->m_fileSize / 1024 / 1024);
LOG_FILE.println("MiB");
if(dev->m_type == SCSI_DEVICE_OPTICAL) {
LOG_FILE.print(" MODE2:");LOG_FILE.print(dev->m_mode2);
LOG_FILE.print(" BlockSize:");LOG_FILE.println(dev->m_blocksize);
}
return true; // File opened
failed:
dev->m_file->close();
dev->m_fileSize = dev->m_blocksize = 0; // no file
delete dev->m_file;
dev->m_file = NULL;
return false;
}
@ -272,6 +346,9 @@ void setup()
scsi_command_table[SCSI_WRITE_BUFFER] = onWriteBuffer;
scsi_command_table[SCSI_SEND_DIAG] = onSendDiagnostic;
scsi_command_table[SCSI_READ_DEFECT_DATA] = onReadDefectData;
scsi_command_table[SCSI_READ_TOC] = onReadTOC;
scsi_command_table[SCSI_READ_DVD_STRUCTURE] = onReadDVDStructure;
scsi_command_table[SCSI_READ_DISC_INFORMATION] = onReadDiscInformation;
// clear and initialize default inquiry blocks
// default SCSI HDD
@ -462,85 +539,116 @@ void findDriveImages(FsFile root) {
// Valid file, open for reading/writing.
file = new FsFile(SD.open(name, O_RDWR));
if(file && file->isFile()) {
if(tolower(name[0]) == 'h' && tolower(name[1]) == 'd') {
// Defaults for Hard Disks
int id = 1; // 0 and 3 are common in Macs for physical HD and CD, so avoid them.
int lun = 0;
int blk = 512;
SCSI_DEVICE_TYPE device_type;
if(tolower(name[1]) != 'd') {
file->close();
delete file;
LOG_FILE.print("Not an image: ");
LOG_FILE.println(name);
continue;
}
switch (tolower(name[0])) {
case 'h': device_type = SCSI_DEVICE_HDD;
break;
case 'c': device_type = SCSI_DEVICE_OPTICAL;
break;
default:
file->close();
delete file;
LOG_FILE.print("Not an image: ");
LOG_FILE.println(name);
continue;
}
// Positionally read in and coerase the chars to integers.
// We only require the minimum and read in the next if provided.
int file_name_length = strlen(name);
if(file_name_length > 2) { // HD[N]
int tmp_id = name[HDIMG_ID_POS] - '0';
// Defaults for Hard Disks
int id = 1; // 0 and 3 are common in Macs for physical HD and CD, so avoid them.
int lun = 0;
int blk = 512;
// If valid id, set it, else use default
if(tmp_id > -1 && tmp_id < 8) {
id = tmp_id;
} else {
LOG_FILE.print(name);
LOG_FILE.println(" - bad SCSI id in filename, Using default ID 1");
}
}
// Positionally read in and coerase the chars to integers.
// We only require the minimum and read in the next if provided.
int file_name_length = strlen(name);
if(file_name_length > 2) { // HD[N]
int tmp_id = name[HDIMG_ID_POS] - '0';
if(file_name_length > 3) { // HDN[N]
int tmp_lun = name[HDIMG_LUN_POS] - '0';
// If valid lun, set it, else use default
if(tmp_lun == 0 || tmp_lun == 1) {
lun = tmp_lun;
} else {
LOG_FILE.print(name);
LOG_FILE.println(" - bad SCSI LUN in filename, Using default LUN ID 0");
}
}
int blk1 = 0, blk2, blk3, blk4 = 0;
if(file_name_length > 8) { // HD00_[111]
blk1 = name[HDIMG_BLK_POS] - '0';
blk2 = name[HDIMG_BLK_POS+1] - '0';
blk3 = name[HDIMG_BLK_POS+2] - '0';
if(file_name_length > 9) // HD00_NNN[1]
blk4 = name[HDIMG_BLK_POS+3] - '0';
}
if(blk1 == 2 && blk2 == 5 && blk3 == 6) {
blk = 256;
} else if(blk1 == 1 && blk2 == 0 && blk3 == 2 && blk4 == 4) {
blk = 1024;
} else if(blk1 == 2 && blk2 == 0 && blk3 == 4 && blk4 == 8) {
blk = 2048;
}
if(id < NUM_SCSIID && lun < NUM_SCSILUN) {
dev = &scsi_device_list[id][lun];
LOG_FILE.print(" - ");
// If valid id, set it, else use default
if(tmp_id > -1 && tmp_id < 8) {
id = tmp_id;
} else {
LOG_FILE.print(name);
image_ready = hddimageOpen(dev, file, id, lun, blk);
if(image_ready) { // Marked as a responsive ID
scsi_id_mask |= 1<<id;
switch(dev->m_type)
{
case SCSI_DEVICE_HDD:
// default SCSI HDD
dev->inquiry_block = &default_hdd;
break;
case SCSI_DEVICE_OPTICAL:
// default SCSI CDROM
dev->inquiry_block = &default_optical;
break;
}
readSCSIDeviceConfig(dev);
}
LOG_FILE.println(" - bad SCSI id in filename, Using default ID 1");
}
}
} else {
file->close();
delete file;
LOG_FILE.print("Not an image: ");
LOG_FILE.println(name);
if(file_name_length > 3) { // HDN[N]
int tmp_lun = name[HDIMG_LUN_POS] - '0';
// If valid lun, set it, else use default
if(tmp_lun == 0 || tmp_lun == 1) {
lun = tmp_lun;
} else {
LOG_FILE.print(name);
LOG_FILE.println(" - bad SCSI LUN in filename, Using default LUN ID 0");
}
}
int blk1 = 0, blk2, blk3, blk4 = 0;
if(file_name_length > 8) { // HD00_[111]
blk1 = name[HDIMG_BLK_POS] - '0';
blk2 = name[HDIMG_BLK_POS+1] - '0';
blk3 = name[HDIMG_BLK_POS+2] - '0';
if(file_name_length > 9) // HD00_NNN[1]
blk4 = name[HDIMG_BLK_POS+3] - '0';
}
if(blk1 == 2 && blk2 == 5 && blk3 == 6) {
blk = 256;
} else if(blk1 == 1 && blk2 == 0 && blk3 == 2 && blk4 == 4) {
blk = 1024;
} else if(blk1 == 2 && blk2 == 0 && blk3 == 4 && blk4 == 8) {
blk = 2048;
}
if(id < NUM_SCSIID && lun < NUM_SCSILUN) {
dev = &scsi_device_list[id][lun];
LOG_FILE.print(" - ");
LOG_FILE.print(name);
dev->m_type = device_type;
image_ready = hddimageOpen(dev, file, id, lun, blk);
if(image_ready) { // Marked as a responsive ID
scsi_id_mask |= 1<<id;
switch(dev->m_type)
{
case SCSI_DEVICE_HDD:
// default SCSI HDD
dev->inquiry_block.ansi_version = 1;
dev->inquiry_block.response_format = 1;
dev->inquiry_block.additional_length = 31;
memcpy(dev->inquiry_block.vendor, "QUANTUM", 7);
memcpy(dev->inquiry_block.product, "FIREBALL1", 9);
memcpy(dev->inquiry_block.revision, "1.0", 3);
break;
case SCSI_DEVICE_OPTICAL:
// default SCSI CDROM
dev->inquiry_block.peripheral_device_type = 5;
dev->inquiry_block.rmb = 1;
dev->inquiry_block.ansi_version = 1;
dev->inquiry_block.response_format = 1;
dev->inquiry_block.additional_length = 42;
dev->inquiry_block.sync = 1;
memcpy(dev->inquiry_block.vendor, "BLUESCSI", 8);
memcpy(dev->inquiry_block.product, "CD-ROM CDU-55S", 14);
memcpy(dev->inquiry_block.revision, "1.9a", 4);
dev->inquiry_block.release = 0x20;
memcpy(dev->inquiry_block.revision_date, "1995", 4);
break;
}
readSCSIDeviceConfig(dev);
}
}
}
LOG_FILE.sync();
}
@ -815,7 +923,7 @@ void writeDataLoop(uint32_t blocksize, const byte* srcptr)
*/
void writeDataPhase(int len, const byte* p)
{
LOGN("DATAIN PHASE");
LOG(" DI ");
SCSI_PHASE_CHANGE(SCSI_PHASE_DATAIN);
// Bus settle delay 400ns. Following code was measured at 800ns before REQ asserted. STM32F103.
#ifdef XCVR
@ -831,17 +939,16 @@ void writeDataPhase(int len, const byte* p)
*/
void writeDataPhaseSD(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
{
LOGN("DATAIN PHASE(SD)");
LOG (" DI(SD) ");
SCSI_PHASE_CHANGE(SCSI_PHASE_DATAIN);
//Bus settle delay 400ns, file.seek() measured at over 1000ns.
uint64_t pos = (uint64_t)adds * dev->m_blocksize;
dev->m_file->seekSet(pos);
#ifdef XCVR
TRANSCEIVER_IO_SET(vTR_DBP,TR_OUTPUT)
#endif
SCSI_DB_OUTPUT()
for(uint32_t i = 0; i < len; i++) {
// Asynchronous reads will make it faster ...
m_resetJmp = false;
@ -900,7 +1007,7 @@ void readDataLoop(uint32_t blockSize, byte* dstptr)
*/
void readDataPhase(int len, byte* p)
{
LOGN("DATAOUT PHASE");
LOG(" DO ");
SCSI_PHASE_CHANGE(SCSI_PHASE_DATAOUT);
// Bus settle delay 400ns. The following code was measured at 450ns before REQ asserted. STM32F103.
readDataLoop(len, p);
@ -912,7 +1019,7 @@ void readDataPhase(int len, byte* p)
*/
void readDataPhaseSD(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
{
LOGN("DATAOUT PHASE(SD)");
LOG(" DO(SD) ");
SCSI_PHASE_CHANGE(SCSI_PHASE_DATAOUT);
//Bus settle delay 400ns, file.seek() measured at over 1000ns.
@ -938,7 +1045,7 @@ void readDataPhaseSD(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
*/
void verifyDataPhaseSD(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
{
LOGN("DATAOUT PHASE(SD)");
LOG(" DO(SD) ");
SCSI_PHASE_CHANGE(SCSI_PHASE_DATAOUT);
//Bus settle delay 400ns, file.seek() measured at over 1000ns.
@ -956,7 +1063,7 @@ void verifyDataPhaseSD(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
*/
void MsgIn2(int msg)
{
LOGN("MsgIn2");
LOG(" MI:"); LOGHEX(msg); LOG(" ");
SCSI_PHASE_CHANGE(SCSI_PHASE_MESSAGEIN);
// Bus settle delay 400ns built in to writeHandshake
writeHandshake(msg);
@ -993,7 +1100,7 @@ void loop()
delayMicroseconds(1);
return;
}
LOGN("Selection");
LOG(" S ");
m_isBusReset = false;
if (setjmp(m_resetJmpBuf) == 1) {
LOGN("Reset, going to BusFree");
@ -1020,6 +1127,7 @@ void loop()
//
if(isHigh(gpio_read(ATN))) {
LOG(" MO:");
SCSI_PHASE_CHANGE(SCSI_PHASE_MESSAGEOUT);
// Bus settle delay 400ns. Following code was measured at 350ns before REQ asserted. Added another 50ns. STM32F103.
SCSI_PHASE_CHANGE(SCSI_PHASE_MESSAGEOUT);// 28ns delay STM32F103
@ -1032,6 +1140,7 @@ void loop()
m_msb[msc++] = readHandshake();
}
for(int i = 0; i < msc; i++) {
LOGHEX(m_msb[i]); LOG(":");
// ABORT
if (m_msb[i] == 0x06) {
goto BusFree;
@ -1081,7 +1190,7 @@ void loop()
}
}
LOG("Command:");
LOG(" CMD:");
SCSI_PHASE_CHANGE(SCSI_PHASE_COMMAND);
// Bus settle delay 400ns. The following code was measured at 20ns before REQ asserted. Added another 380ns. STM32F103.
asm("nop;nop;nop;nop;nop;nop;nop;nop");// This asm causes some code reodering, which adds 270ns, plus 8 nop cycles for an additional 110ns. STM32F103
@ -1115,7 +1224,7 @@ void loop()
LOG(m_id);
LOG(":LUN ");
LOG(m_lun);
LOGN("");
LOG(" ");
dev = &(scsi_device_list[m_id][m_lun]);
// HDD Image selection
@ -1133,7 +1242,7 @@ void loop()
if(cmd[0] == SCSI_INQUIRY)
{
// Special INQUIRY handling for invalid LUNs
LOGN("onInquiry - InvalidLUN");
LOG(" onInquiry-InvalidLUN ");
dev = &(scsi_device_list[m_id][0]);
byte temp = dev->inquiry_block.raw[0];
@ -1157,18 +1266,17 @@ void loop()
LED_OFF();
Status:
LOGN("Sts");
LOG(" S:"); LOGHEX(m_sts);
SCSI_PHASE_CHANGE(SCSI_PHASE_STATUS);
// Bus settle delay 400ns built in to writeHandshake
writeHandshake(m_sts);
LOGN("MsgIn");
LOG(" MI:"); LOGHEX(m_msg);
SCSI_PHASE_CHANGE(SCSI_PHASE_MESSAGEIN);
// Bus settle delay 400ns built in to writeHandshake
writeHandshake(m_msg);
BusFree:
LOGN("BusFree");
LOGN(" BF");
m_isBusReset = false;
//SCSI_OUT(vREQ,inactive) // gpio_write(REQ, low);
//SCSI_OUT(vMSG,inactive) // gpio_write(MSG, low);
@ -1213,7 +1321,7 @@ static byte onNOP(SCSI_DEVICE *dev, const byte *cdb)
*/
byte onInquiry(SCSI_DEVICE *dev, const byte *cdb)
{
writeDataPhase(cdb[4] < 36 ? cdb[4] : 36, dev->inquiry_block->raw);
writeDataPhase(cdb[4] < 47 ? cdb[4] : 47, dev->inquiry_block.raw);
return SCSI_STATUS_GOOD;
}
@ -1267,6 +1375,9 @@ byte checkBlockCommand(SCSI_DEVICE *dev, uint32_t adds, uint32_t len)
{
// Check block range is valid
if (adds >= dev->m_blockcount || (adds + len) > dev->m_blockcount) {
LOG(dev->m_blockcount);
if(adds >= dev->m_additional_sense_code) { LOGN(" first "); }
if((adds + len) > dev->m_blockcount) { LOGN(" second "); }
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
return SCSI_STATUS_CHECK_CONDITION;
@ -1302,13 +1413,14 @@ static byte onRead10(SCSI_DEVICE *dev, const byte *cdb)
{
unsigned adds = ((uint32_t)cdb[2] << 24) | ((uint32_t)cdb[3] << 16) | ((uint32_t)cdb[4] << 8) | cdb[5];
unsigned len = ((uint32_t)cdb[7] << 8) | cdb[8];
/*
LOGN("onRead10");
LOG("-R ");
LOG (" Read10 ");
LOG("A:");
LOGHEX(adds);
LOG(":");
LOGHEXN(len);
*/
LOGHEX(len);
LOG(" ");
byte sts = checkBlockCommand(dev, adds, len);
if (sts) {
return sts;
@ -1403,15 +1515,34 @@ byte onVerify(SCSI_DEVICE *dev, const byte *cdb)
*/
byte onModeSense(SCSI_DEVICE *dev, const byte *cdb)
{
memset(m_buf, 0, sizeof(m_buf));
int pageCode = cdb[2] & 0x3F;
int pageControl = cdb[2] >> 6;
byte dbd = cdb[1] & 0x8;
byte block_descriptor_length = 8;
// saving parameters is not allowed...yet!
if(pageControl == 3)
{
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_SAVING_PARAMETERS_NOT_SUPPORTED;
return SCSI_STATUS_CHECK_CONDITION;
}
// SCSI_MODE_SENSE6
int a = 4;
byte dbd = cdb[1] & 0x08;
int length = cdb[4];
if(cdb[0] == SCSI_MODE_SENSE10) a = 8;
if(dbd == 0) {
if(cdb[0] == SCSI_MODE_SENSE10) {
a = 8;
length = cdb[7];
length <<= 8;
length |= cdb[8];
if(length > 0x800) { length = 0x800; };
}
memset(m_buf, 0, length);
if(!dbd && dev->m_type != SCSI_DEVICE_OPTICAL) {
byte c[8] = {
0,//Density code
dev->m_blockcount >> 16,
@ -1425,95 +1556,183 @@ byte onModeSense(SCSI_DEVICE *dev, const byte *cdb)
memcpy(&m_buf[a], c, 8);
a += 8;
}
switch(pageCode) {
case SCSI_SENSE_MODE_ALL:
case SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY:
m_buf[a + 0] = SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY;
m_buf[a + 1] = 0x0A;
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_DISCONNECT_RECONNECT:
m_buf[a + 0] = SCSI_SENSE_MODE_DISCONNECT_RECONNECT;
m_buf[a + 1] = 0x0A;
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_FORMAT_DEVICE: //Drive parameters
m_buf[a + 0] = SCSI_SENSE_MODE_FORMAT_DEVICE; //Page code
m_buf[a + 1] = 0x16; // Page length
if(pageControl != 1) {
m_buf[a + 11] = 0x3F;//Number of sectors / track
m_buf[a + 12] = (byte)(dev->m_blocksize >> 8);
m_buf[a + 13] = (byte)dev->m_blocksize;
m_buf[a + 15] = 0x1; // Interleave
}
a += 0x18;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_DISK_GEOMETRY: //Drive parameters
m_buf[a + 0] = SCSI_SENSE_MODE_DISK_GEOMETRY; //Page code
m_buf[a + 1] = 0x16; // Page length
if(pageControl != 1) {
unsigned cylinders = dev->m_blockcount / (16 * 63);
m_buf[a + 2] = (byte)(cylinders >> 16); // Cylinders
m_buf[a + 3] = (byte)(cylinders >> 8);
m_buf[a + 4] = (byte)cylinders;
m_buf[a + 5] = 16; //Number of heads
}
a += 0x18;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_FLEXABLE_GEOMETRY:
m_buf[a + 0] = SCSI_SENSE_MODE_FLEXABLE_GEOMETRY;
m_buf[a + 1] = 0x1E; // Page length
if(pageControl != 1) {
m_buf[a + 2] = 0x03;
m_buf[a + 3] = 0xE8; // Transfer rate 1 mbit/s
m_buf[a + 4] = 16; // Number of heads
m_buf[a + 5] = 18; // Sectors per track
m_buf[a + 6] = (byte)dev->m_blocksize >> 8;
m_buf[a + 7] = (byte)dev->m_blocksize & 0xff; // Data bytes per sector
}
a += 0x20;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_CACHING:
m_buf[a + 0] = SCSI_SENSE_MODE_CACHING;
m_buf[a + 1] = 0x0A; // Page length
if(pageControl != 1) {
m_buf[a + 2] = 0x01; // Disalbe Read Cache so no one asks for Cache Stats page.
}
a += 0x08;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_VENDOR_APPLE:
{
const byte page30[0x14] = {0x41, 0x50, 0x50, 0x4C, 0x45, 0x20, 0x43, 0x4F, 0x4D, 0x50, 0x55, 0x54, 0x45, 0x52, 0x2C, 0x20, 0x49, 0x4E, 0x43, 0x20};
m_buf[a + 0] = SCSI_SENSE_MODE_VENDOR_APPLE; // Page code
m_buf[a + 1] = sizeof(page30); // Page length
if(pageControl != 1) {
memcpy(&m_buf[a + 2], page30, sizeof(page30));
}
a += 2 + sizeof(page30);
// HDD supports page codes 0x1 (Read/Write), 0x2, 0x3, 0x4
// CDROM supports page codes 0x1 (Read Only), 0x2, 0xD, 0xE, 0x30
if(dev->m_type == SCSI_DEVICE_HDD) {
switch(pageCode) {
case SCSI_SENSE_MODE_ALL:
case SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY:
m_buf[a + 0] = SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY;
m_buf[a + 1] = 0x0A;
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
}
break; // Don't want SCSI_SENSE_MODE_ALL falling through to error condition
default:
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
return SCSI_STATUS_CHECK_CONDITION;
break;
case SCSI_SENSE_MODE_DISCONNECT_RECONNECT:
m_buf[a + 0] = SCSI_SENSE_MODE_DISCONNECT_RECONNECT;
m_buf[a + 1] = 0x0A;
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_FORMAT_DEVICE: //Drive parameters
m_buf[a + 0] = SCSI_SENSE_MODE_FORMAT_DEVICE; //Page code
m_buf[a + 1] = 0x16; // Page length
if(pageControl != 1) {
m_buf[a + 11] = 0x3F;//Number of sectors / track
m_buf[a + 12] = (byte)(dev->m_blocksize >> 8);
m_buf[a + 13] = (byte)dev->m_blocksize;
m_buf[a + 15] = 0x1; // Interleave
}
a += 0x18;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_DISK_GEOMETRY: //Drive parameters
m_buf[a + 0] = SCSI_SENSE_MODE_DISK_GEOMETRY; //Page code
m_buf[a + 1] = 0x16; // Page length
if(pageControl != 1) {
unsigned cylinders = dev->m_blockcount / (16 * 63);
if(pageControl != 1) {
m_buf[a + 2] = (byte)(cylinders >> 16); // Cylinders
m_buf[a + 3] = (byte)(cylinders >> 8);
m_buf[a + 4] = (byte)cylinders;
m_buf[a + 5] = 16; //Number of heads
} else {
m_buf[a + 2] = 0xFF; // Cylinder length
m_buf[a + 3] = 0xFF;
m_buf[a + 4] = 0xFF;
m_buf[a + 5] = 16; //Number of heads
}
}
a += 0x18;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_FLEXABLE_GEOMETRY:
m_buf[a + 0] = SCSI_SENSE_MODE_FLEXABLE_GEOMETRY;
m_buf[a + 1] = 0x1E; // Page length
if(pageControl != 1) {
m_buf[a + 2] = 0x03;
m_buf[a + 3] = 0xE8; // Transfer rate 1 mbit/s
m_buf[a + 4] = 16; // Number of heads
m_buf[a + 5] = 63; // Sectors per track
m_buf[a + 6] = (byte)dev->m_blocksize >> 8;
m_buf[a + 7] = (byte)dev->m_blocksize & 0xff; // Data bytes per sector
}
a += 0x20;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_CACHING:
m_buf[a + 0] = SCSI_SENSE_MODE_CACHING;
m_buf[a + 1] = 0x0A; // Page length
if(pageControl != 1) {
m_buf[a + 2] = 0x01; // Disalbe Read Cache so no one asks for Cache Stats page.
}
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_VENDOR_APPLE:
{
const byte apple_magic[0x24] = {
0x23,
0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x08, 0x00, 0x30, 0x16, 0x41, 0x50, 0x50,
0x4C, 0x45, 0x20, 0x43, 0x4F, 0x4D, 0x50, 0x55,
0x54, 0x45, 0x52, 0x2C, 0x20, 0x49, 0x4E, 0x43,
0x20, 0x20, 0x20
};
if(pageControl != 1) {
memcpy(&m_buf[0], apple_magic, sizeof(apple_magic));
}
a = sizeof(apple_magic);
if(pageCode != SCSI_SENSE_MODE_ALL) break;
}
break; // Don't want SCSI_SENSE_MODE_ALL falling through to error condition
default:
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
return SCSI_STATUS_CHECK_CONDITION;
break;
}
} else {
// OPTICAL
block_descriptor_length = 0;
if(cdb[0] == SCSI_MODE_SENSE6) {
m_buf[2] = 1 << 7; // WP bit
} else {
m_buf[3] = 1 << 7; // WP bit
}
switch(pageCode) {
case SCSI_SENSE_MODE_ALL:
case SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY:
m_buf[a + 0] = SCSI_SENSE_MODE_READ_WRITE_ERROR_RECOVERY;
m_buf[a + 1] = 0x06;
a += 0x08;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_DISCONNECT_RECONNECT:
m_buf[a + 0] = SCSI_SENSE_MODE_DISCONNECT_RECONNECT;
m_buf[a + 1] = 0x0A;
a += 0x0C;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_CDROM:
m_buf[a + 0] = SCSI_SENSE_MODE_CDROM;
m_buf[a + 1] = 0x06;
if(pageControl != 1)
{
// 2 seconds for inactive timer
m_buf[a + 3] = 0x05;
// MSF multiples are 60 and 75
m_buf[a + 5] = 60;
m_buf[a + 7] = 75;
}
a += 0x8;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_CDROM_AUDIO_CONTROL:
m_buf[a + 0] = SCSI_SENSE_MODE_CDROM_AUDIO_CONTROL;
m_buf[a + 1] = 0x0E;
a += 0x10;
if(pageCode != SCSI_SENSE_MODE_ALL) break;
case SCSI_SENSE_MODE_VENDOR_APPLE:
{
const byte apple_magic[0x24] = {
0x23,
0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x08, 0x00, 0x30, 0x16, 0x41, 0x50, 0x50,
0x4C, 0x45, 0x20, 0x43, 0x4F, 0x4D, 0x50, 0x55,
0x54, 0x45, 0x52, 0x2C, 0x20, 0x49, 0x4E, 0x43,
0x20, 0x20, 0x20
};
if(pageControl != 1) {
memcpy(&m_buf[0], apple_magic, sizeof(apple_magic));
}
a = sizeof(apple_magic);
if(pageCode != SCSI_SENSE_MODE_ALL) break;
}
break; // Don't want SCSI_SENSE_MODE_ALL falling through to error condition
default:
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
return SCSI_STATUS_CHECK_CONDITION;
break;
}
}
if(cdb[0] == SCSI_MODE_SENSE10)
{
m_buf[1] = a - 2;
m_buf[7] = 0x08;
if(pageCode != SCSI_SENSE_MODE_VENDOR_APPLE) {
if(cdb[0] == SCSI_MODE_SENSE10)
{
m_buf[1] = a - 2;
m_buf[7] = block_descriptor_length; // block descriptor length
}
else
{
m_buf[0] = a - 1;
m_buf[3] = block_descriptor_length; // block descriptor length
}
}
else
{
m_buf[0] = a - 1;
m_buf[3] = 0x08;
}
writeDataPhase(cdb[4] < a ? cdb[4] : a, m_buf);
writeDataPhase(length < a ? length : a, m_buf);
return SCSI_STATUS_GOOD;
}
@ -1522,7 +1741,8 @@ byte onModeSelect(SCSI_DEVICE *dev, const byte *cdb)
unsigned length = 0;
LOGN("onModeSelect");
if(dev->m_type != SCSI_DEVICE_HDD && (cdb[1] & 0x01))
// saving mode pages isn't supported yet
if(cdb[1] & 0x01)
{
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
@ -1540,6 +1760,7 @@ byte onModeSelect(SCSI_DEVICE *dev, const byte *cdb)
if(length > 0x800) { length = 0x800; }
}
memset(m_buf, 0, length);
readDataPhase(length, m_buf);
//Apple HD SC Setup sends:
//0 0 0 8 0 0 0 0 0 0 2 0 0 2 10 0 1 6 24 10 8 0 0 0
@ -1697,6 +1918,7 @@ byte onReadDefectData(SCSI_DEVICE *dev, const byte *cdb)
return SCSI_STATUS_GOOD;
}
<<<<<<< HEAD
<<<<<<< HEAD
/*
* MsgIn2.
@ -1955,3 +2177,108 @@ BusFree:
}
=======
>>>>>>> faed60f (code layout adjustments)
=======
static byte onReadTOC(SCSI_DEVICE *dev, const byte *cdb)
{
unsigned lba = 0;
uint8_t msf = cdb[1] & 0x02;
uint8_t track = cdb[6];
unsigned len = ((uint32_t)cdb[7] << 8) | cdb[8];
memset(m_buf, 0, len);
// Doing just the error seemed to make MacOS unhappy
#if 0
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
return SCSI_STATUS_CHECK_CONDITION;
#endif
if(track > 1 || cdb[2] != 0)
{
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_INVALID_FIELD_IN_CDB;
return SCSI_STATUS_CHECK_CONDITION;
}
m_buf[1] = 18; // TOC length LSB
m_buf[2] = 1; // First Track
m_buf[3] = 1; // Last Track
// first track
m_buf[5] = 0x14; // data track
m_buf[6] = 1;
// leadout track
m_buf[13] = 0x14; // data track
m_buf[14] = 0xaa; // leadout track
if(msf)
{
LBAtoMSF(dev->m_blockcount, &m_buf[16]);
}
else
{
m_buf[16] = (byte)(dev->m_blockcount >> 24);
m_buf[17] = (byte)(dev->m_blockcount >> 16);
m_buf[18] = (byte)(dev->m_blockcount >> 8);
m_buf[20] = (byte)(dev->m_blockcount);
}
writeDataPhase(SCSI_TOC_LENGTH > len ? len : SCSI_TOC_LENGTH, m_buf);
return SCSI_STATUS_GOOD;
}
static byte onReadDiscInformation(SCSI_DEVICE *dev, const byte *cdb)
{
writeDataPhase((cdb[7] >> 8) | cdb[8], m_buf);
return SCSI_STATUS_GOOD;
}
static byte onReadDVDStructure(SCSI_DEVICE *dev, const byte *cdb)
{
dev->m_senseKey = SCSI_SENSE_ILLEGAL_REQUEST;
dev->m_additional_sense_code = SCSI_ASC_CANNOT_READ_MEDIUM_INCOMPATIBLE_FORMAT;
return SCSI_STATUS_CHECK_CONDITION;
}
// Thanks RaSCSI :D
// LBA→MSF Conversion
static inline void LBAtoMSF(const uint32_t lba, byte *msf)
{
uint32_t m, s, f;
// 75 and 75*60 get the remainder
m = lba / (75 * 60);
s = lba % (75 * 60);
f = s % 75;
s /= 75;
// The base point is M=0, S=2, F=0
s += 2;
if (s >= 60) {
s -= 60;
m++;
}
// Store
msf[0] = 0x00;
msf[1] = (byte)m;
msf[2] = (byte)s;
msf[3] = (byte)f;
}
static inline uint32_t MSFtoLBA(const byte *msf)
{
uint32_t lba;
// 1, 75, add up in multiples of 75*60
lba = msf[1];
lba *= 60;
lba += msf[2];
lba *= 75;
lba += msf[3];
// Since the base point is M=0, S=2, F=0, subtract 150
lba -= 150;
return lba;
}

20
src/BlueSCSI.h
View File

@ -26,6 +26,17 @@
#define ERROR_FALSE_INIT 3
#define ERROR_NO_SDCARD 5
enum SCSI_DEVICE_TYPE
{
SCSI_DEVICE_HDD,
SCSI_DEVICE_OPTICAL,
};
#define CDROM_RAW_SECTORSIZE 2352
#define CDROM_COMMON_SECTORSIZE 2048
#define MAX_SCSI_COMMAND 0xff
#define SCSI_COMMAND_HANDLER(x) static byte x(SCSI_DEVICE *dev, const byte *cdb)
#if DEBUG
#define LOG(XX) Serial.print(XX)
@ -250,14 +261,7 @@ uint32_t db_bsrr[256];
// #define GET_CDB6_LBA(x) ((x[2] & 01f) << 16) | (x[3] << 8) | x[4]
#define READ_DATA_BUS() (byte)((~(uint32_t)GPIOB->regs->IDR)>>8)
enum SCSI_DEVICE_TYPE
{
SCSI_DEVICE_HDD,
SCSI_DEVICE_OPTICAL,
};
#define CDROM_RAW_SECTORSIZE 2352
#define CDROM_COMMON_SECTORSIZE 2048
struct SCSI_INQUIRY_DATA
{
@ -310,6 +314,7 @@ typedef __attribute__((aligned(4))) struct _SCSI_DEVICE
FsFile *m_file; // File object
uint64_t m_fileSize; // File size
uint16_t m_blocksize; // SCSI BLOCK size
uint16_t m_rawblocksize;
uint8_t m_type; // SCSI device type
uint32_t m_blockcount; // blockcount
bool m_raw; // Raw disk
@ -317,6 +322,7 @@ typedef __attribute__((aligned(4))) struct _SCSI_DEVICE
uint8_t m_senseKey; // Sense key
uint16_t m_additional_sense_code; // ASC/ASCQ
bool m_mode2; // MODE2 CDROM
uint8_t m_offset; // ISO offset for missing sync header
} SCSI_DEVICE;

3
src/scsi_sense.h
View File

@ -27,6 +27,7 @@
#define SCSI_ASC_WRITE_PROTECTED 0x2700
#define SCSI_ASC_CANNOT_READ_MEDIUM_UNKNOWN_FORMAT 0x3001
#define SCSI_ASC_CANNOT_READ_MEDIUM_INCOMPATIBLE_FORMAT 0x3002
#define SCSI_ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x3900
#define SCSI_ASC_MEDIUM_NOT_PRESENT 0x3A00
#define SCSI_ASC_LUN_NOT_READY_MANUAL_INTERVENTION_REQUIRED 0x0403
@ -39,6 +40,8 @@
#define SCSI_SENSE_MODE_DISK_GEOMETRY 0x04
#define SCSI_SENSE_MODE_FLEXABLE_GEOMETRY 0x05
#define SCSI_SENSE_MODE_CACHING 0x08
#define SCSI_SENSE_MODE_CDROM 0x0D
#define SCSI_SENSE_MODE_CDROM_AUDIO_CONTROL 0x0E
#define SCSI_SENSE_MODE_VENDOR_APPLE 0x30
#define SCSI_SENSE_MODE_ALL 0x3F