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New ATAPI CD-ROM implementation.
This commit is contained in:
Maxim Poliakovski
parent
fc26be3e24
commit
0687b0c60e
204
devices/common/ata/atapicdrom.cpp
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204
devices/common/ata/atapicdrom.cpp
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/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file ATAPI CDROM implementation. */
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#include <devices/common/ata/atadefs.h>
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#include <devices/common/ata/atapicdrom.h>
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#include <devices/common/scsi/scsi.h> // ATAPI CDROM reuses SCSI commands (sic!)
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#include <devices/deviceregistry.h>
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#include <machines/machinebase.h>
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#include <machines/machineproperties.h>
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#include <memaccess.h>
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#include <string>
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using namespace ata_interface;
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AtapiCdrom::AtapiCdrom(std::string name) : AtapiBaseDevice(name) {
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this->set_error_callback(
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[this](uint8_t sense_key, uint8_t asc) {
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this->status_error(sense_key, asc);
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}
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);
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}
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int AtapiCdrom::device_postinit() {
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std::string cdr_config = GET_STR_PROP("cdr_config");
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if (cdr_config.empty()) {
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LOG_F(ERROR, "%s: cdr_config property is empty", this->name.c_str());
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return -1;
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}
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std::string bus_id;
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uint32_t dev_num;
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parse_device_path(cdr_config, bus_id, dev_num);
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auto bus_obj = dynamic_cast<IdeChannel*>(gMachineObj->get_comp_by_name(bus_id));
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bus_obj->register_device(dev_num, this);
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std::string cdr_image_path = GET_STR_PROP("cdr_img");
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if (!cdr_image_path.empty()) {
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this->insert_image(cdr_image_path);
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}
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return 0;
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}
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void AtapiCdrom::perform_packet_command() {
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uint32_t lba, xfer_len;
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this->r_status |= BSY;
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switch (this->cmd_pkt[0]) {
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case ScsiCommand::TEST_UNIT_READY:
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if (this->medium_present())
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this->status_good();
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else
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this->status_error(ScsiSense::NOT_READY, ScsiError::MEDIUM_NOT_PRESENT);
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this->present_status();
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break;
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case ScsiCommand::REQ_SENSE:
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xfer_len = this->request_sense(this->data_buf, this->sense_key, this->asc, this->ascq);
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if (!xfer_len) {
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this->present_status();
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} else {
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this->xfer_cnt = std::min((uint32_t)this->r_byte_count, xfer_len);
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this->data_ptr = (uint16_t*)this->data_buf;
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this->status_good();
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this->data_out_phase();
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}
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break;
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case ScsiCommand::INQUIRY:
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this->xfer_cnt = this->inquiry(this->cmd_pkt, this->data_buf);
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this->r_byte_count = this->xfer_cnt;
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this->data_ptr = (uint16_t*)this->data_buf;
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this->status_good();
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this->data_out_phase();
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break;
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case ScsiCommand::START_STOP_UNIT:
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if ((this->cmd_pkt[4] & 3) == 2) {
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LOG_F(WARNING, "CD-ROM eject requested");
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}
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this->status_good();
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this->present_status();
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break;
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case ScsiCommand::PREVENT_ALLOW_MEDIUM_REMOVAL:
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LOG_F(INFO, "%s: medium removal %s", this->name.c_str(),
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this->cmd_pkt[4] & 1 ? "prevented" : "allowed");
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this->status_good();
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this->present_status();
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break;
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case ScsiCommand::READ_CAPACITY_10:
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this->xfer_cnt = this->report_capacity(this->data_buf);
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this->r_byte_count = this->xfer_cnt;
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this->data_ptr = (uint16_t*)this->data_buf;
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this->status_good();
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this->data_out_phase();
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break;
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case ScsiCommand::READ_TOC:
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this->status_good();
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xfer_len = this->read_toc(this->cmd_pkt, this->data_buf);
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if (!xfer_len) {
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this->present_status();
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} else {
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this->xfer_cnt = std::min((uint32_t)this->r_byte_count, xfer_len);
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this->data_ptr = (uint16_t*)this->data_buf;
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this->data_out_phase();
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}
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break;
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case ScsiCommand::MODE_SENSE_10:
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this->xfer_cnt = this->mode_sense_ex(this->cmd_pkt, this->data_buf);
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if (!this->xfer_cnt) {
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this->present_status();
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} else {
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this->r_byte_count = this->xfer_cnt;
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this->data_ptr = (uint16_t*)this->data_buf;
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this->status_good();
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this->data_out_phase();
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}
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break;
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case ScsiCommand::READ_12:
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lba = READ_DWORD_BE_U(&this->cmd_pkt[2]);
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xfer_len = READ_DWORD_BE_U(&this->cmd_pkt[6]);
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if (this->r_features & ATAPI_Features::DMA) {
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LOG_F(WARNING, "ATAPI DMA transfer requsted");
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}
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this->set_fpos(lba);
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this->xfer_cnt = this->read_begin(xfer_len, this->r_byte_count);
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this->r_byte_count = this->xfer_cnt;
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this->data_ptr = (uint16_t*)this->data_cache.get();
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this->status_good();
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this->data_out_phase();
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break;
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case ScsiCommand::SET_CD_SPEED:
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LOG_F(INFO, "%s: speed set to %d kBps", this->name.c_str(),
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READ_WORD_BE_U(&this->cmd_pkt[2]));
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this->status_good();
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this->present_status();
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break;
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case ScsiCommand::READ_CD:
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lba = READ_DWORD_BE_U(&this->cmd_pkt[2]);
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xfer_len = (this->cmd_pkt[6] << 16) | READ_WORD_BE_U(&this->cmd_pkt[7]);
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if (this->cmd_pkt[1] || this->cmd_pkt[9] != 0x10 || this->cmd_pkt[10])
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LOG_F(WARNING, "%s: unsupported READ_CD params", this->name.c_str());
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if (this->r_features & ATAPI_Features::DMA) {
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LOG_F(WARNING, "ATAPI DMA transfer requsted");
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}
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this->set_fpos(lba);
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this->xfer_cnt = this->read_begin(xfer_len, this->r_byte_count);
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this->r_byte_count = this->xfer_cnt;
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this->data_ptr = (uint16_t*)this->data_cache.get();
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this->status_good();
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this->data_out_phase();
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break;
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default:
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LOG_F(ERROR, "%s: unsupported ATAPI command 0x%X", this->name.c_str(),
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this->cmd_pkt[0]);
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this->status_error(ScsiSense::ILLEGAL_REQ, ScsiError::INVALID_CMD);
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this->present_status();
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}
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}
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void AtapiCdrom::status_good() {
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this->status_expected = true;
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this->r_error = 0;
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this->sense_key = 0;
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this->r_status &= ~ATA_Status::ERR;
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}
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void AtapiCdrom::status_error(uint8_t sense_key, uint8_t asc) {
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this->status_expected = true;
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this->sense_key = sense_key;
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this->asc = asc;
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this->r_error = (sense_key << 4) | ATA_Error::ABRT;
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this->r_status |= ATA_Status::ERR;
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}
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static const PropMap AtapiCdromProperties = {
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{"cdr_img", new StrProperty("")},
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};
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static const DeviceDescription AtapiCdromDescriptor =
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{AtapiCdrom::create, {}, AtapiCdromProperties};
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REGISTER_DEVICE(AtapiCdrom, AtapiCdromDescriptor);
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64
devices/common/ata/atapicdrom.h
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64
devices/common/ata/atapicdrom.h
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@ -0,0 +1,64 @@
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/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file ATAPI CDROM definitions. */
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#ifndef ATAPI_CDROM_H
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#define ATAPI_CDROM_H
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#include <devices/common/ata/atapibasedevice.h>
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#include <devices/storage/cdromdrive.h>
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#include <string>
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class AtapiCdrom : public AtapiBaseDevice, public CdromDrive {
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public:
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AtapiCdrom(std::string name);
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~AtapiCdrom() = default;
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static std::unique_ptr<HWComponent> create() {
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return std::unique_ptr<AtapiCdrom>(new AtapiCdrom("ATAPI-CDROM"));
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}
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int device_postinit() override;
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void perform_packet_command() override;
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int request_data() override {
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this->data_ptr = (uint16_t*)this->data_cache.get();
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this->xfer_cnt = this->read_more();
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return this->xfer_cnt;
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}
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bool data_available() override {
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return this->data_left() != 0;
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}
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void status_good();
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void status_error(uint8_t sense_key, uint8_t asc);
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private:
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uint8_t sense_key = 0;
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uint8_t asc = 0;
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uint8_t ascq = 0;
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};
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#endif // ATAPI_CDROM_H
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