mirror of
https://github.com/dkgrizzly/GreenSCSI.git
synced 2024-06-13 17:29:35 +00:00
c2bac1a9d0
from TinySCSIEmu with the NCR5380 PHY. Successfully booted OpenVMS and Digital UNIX on an DEC Alpha 3000/300. + Interrupt-driven SCSI Data bus for Read & Write block routines + Low-Level Hardware register access for GPIO manipulation + Initial Optical Drive Emulation ported from TinySCSIEmu + Additional Mode Sense / Mode Select work to enable booting OpenVMS and Digital UNIX from CD or HD + Per-ID Inquiry Response editing via [CH]Dxx_xxx.cfg files instead of SCSI_CONFIG.TXT (same format) + Images should now be named CDxx_xxx.img or HDxx_xxx.img instead of HDxx_xxx.hda
121 lines
3.8 KiB
C++
Executable File
121 lines
3.8 KiB
C++
Executable File
#include "scsi_defs.h"
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void Read6CommandHandler() {
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LOG("[Read6]");
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m_sts |= onReadCommand((((uint32_t)m_cmd[1] & 0x1F) << 16) | ((uint32_t)m_cmd[2] << 8) | m_cmd[3], (m_cmd[4] == 0) ? 0x100 : m_cmd[4]);
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m_phase = PHASE_STATUSIN;
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}
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void Write6CommandHandler() {
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LOG("[Write6]");
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m_sts |= onWriteCommand((((uint32_t)m_cmd[1] & 0x1F) << 16) | ((uint32_t)m_cmd[2] << 8) | m_cmd[3], (m_cmd[4] == 0) ? 0x100 : m_cmd[4]);
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m_phase = PHASE_STATUSIN;
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}
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void Seek6CommandHandler() {
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LOG("[Seek6]");
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m_phase = PHASE_STATUSIN;
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}
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/*
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* READ CAPACITY command processing.
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*/
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void ReadCapacityCommandHandler() {
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LOGN("[ReadCapacity]");
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if(!m_img) {
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m_sts |= 0x02; // Image file absent
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m_phase = PHASE_STATUSIN;
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return;
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}
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uint32_t bl = m_img->m_blocksize;
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uint32_t bc = m_img->m_fileSize / bl;
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uint8_t buf[8] = {
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(uint8_t)(((uint32_t)(bc >> 24))&0xff), (uint8_t)(((uint32_t)(bc >> 16))&0xff), (uint8_t)(((uint32_t)(bc >> 8))&0xff), (uint8_t)(((uint32_t)(bc))&0xff),
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(uint8_t)(((uint32_t)(bl >> 24))&0xff), (uint8_t)(((uint32_t)(bl >> 16))&0xff), (uint8_t)(((uint32_t)(bl >> 8))&0xff), (uint8_t)(((uint32_t)(bl))&0xff)
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};
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writeDataPhase(8, buf);
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m_phase = PHASE_STATUSIN;
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}
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void Read10CommandHandler() {
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LOG("[Read10]");
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m_sts |= onReadCommand(((uint32_t)m_cmd[2] << 24) | ((uint32_t)m_cmd[3] << 16) | ((uint32_t)m_cmd[4] << 8) | m_cmd[5], ((uint32_t)m_cmd[7] << 8) | m_cmd[8]);
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m_phase = PHASE_STATUSIN;
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}
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void Write10CommandHandler() {
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LOG("[Write10]");
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m_sts |= onWriteCommand(((uint32_t)m_cmd[2] << 24) | ((uint32_t)m_cmd[3] << 16) | ((uint32_t)m_cmd[4] << 8) | m_cmd[5], ((uint32_t)m_cmd[7] << 8) | m_cmd[8]);
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m_phase = PHASE_STATUSIN;
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}
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void Seek10CommandHandler() {
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LOG("[Seek10]");
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m_phase = PHASE_STATUSIN;
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}
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/*
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* READ6 / 10 Command processing.
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*/
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uint8_t onReadCommand(uint32_t adds, uint32_t len)
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{
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LOG("-R ");
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LOGHEX6(adds);
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LOG(" ");
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LOGHEX4N(len);
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if(!m_img) return 0x02; // Image file absent
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LED_ON();
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writeDataPhaseSD(adds, len);
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LED_OFF();
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return 0x00; //sts
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}
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/*
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* WRITE6 / 10 Command processing.
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*/
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uint8_t onWriteCommand(uint32_t adds, uint32_t len)
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{
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LOG("-W ");
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LOGHEX6(adds);
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LOG(" ");
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LOGHEX4N(len);
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if(!m_img) return 0x02; // Image file absent
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LED_ON();
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readDataPhaseSD(adds, len);
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LED_OFF();
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return 0; //sts
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}
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void ConfigureDiskHandlers(int id) {
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for(int c = 0; c < 256; c++)
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m_handler[id][c] = &UnknownCommandHandler;
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m_handler[id][CMD_TEST_UNIT_READY] = &TestUnitCommandHandler;
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m_handler[id][CMD_REZERO_UNIT] = &RezeroUnitCommandHandler;
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m_handler[id][CMD_REQUEST_SENSE] = &RequestSenseCommandHandler;
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m_handler[id][CMD_FORMAT_UNIT] = &FormatUnitCommandHandler;
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m_handler[id][0x06] = &FormatUnitCommandHandler;
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m_handler[id][0x07] = &ReassignBlocksCommandHandler;
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m_handler[id][CMD_READ6] = &Read6CommandHandler;
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m_handler[id][CMD_WRITE6] = &Write6CommandHandler;
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m_handler[id][CMD_SEEK6] = &Seek6CommandHandler;
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m_handler[id][CMD_INQUIRY] = &InquiryCommandHandler;
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m_handler[id][CMD_MODE_SELECT6] = &ModeSelect6CommandHandler;
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m_handler[id][CMD_MODE_SENSE6] = &ModeSense6CommandHandler;
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m_handler[id][CMD_START_STOP_UNIT] = &StartStopUnitCommandHandler;
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m_handler[id][CMD_PREVENT_REMOVAL] = &PreAllowMediumRemovalCommandHandler;
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m_handler[id][CMD_READ_CAPACITY10] = &ReadCapacityCommandHandler;
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m_handler[id][CMD_READ10] = &Read10CommandHandler;
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m_handler[id][CMD_WRITE10] = &Write10CommandHandler;
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m_handler[id][CMD_SEEK10] = &Seek10CommandHandler;
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m_handler[id][CMD_MODE_SENSE10] = &ModeSense10CommandHandler;
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#if SCSI_SELECT == 1
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m_handler[id][0xC2] = &DTCsetDriveParameterCommandHandler;
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#endif
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}
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