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downgraded ATAPI CD-ROM commands from SCSI-3 to SCSI-2

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In the context of ATAPI there's only a single linked document in ide.js: https://www.t10.org/ftp/x3t9.2/document.87/87-106r0.txt.

This link points to "PROPOSAL FOR CD-ROM IN SCSI-2" from 1987 (!) and its content matches the current code in v86, which the SCSI-3 documents did not at all (only the command codes matched, but otherwise SCSI-3 is very different from SCSI-2).
This commit is contained in:
Christian Schnell 2025-05-17 17:58:48 +02:00 • committed by Fabian
parent c51a0c1f53
commit 20acdacfcc
1 changed files with 34 additions and 74 deletions
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108
src/ide.js
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@ -7,24 +7,16 @@ import { CMOS_BIOS_DISKTRANSFLAG, CMOS_DISK_DATA, CMOS_DISK_DRIVE1_CYL, CMOS_DIS
import { CPU } from "./cpu.js";
import { BusConnector } from "./bus.js";
// ATA/ATAPI-6 IDE Controller with support for:
// - up to 4 IDE devices (2 IDE channels with 2 IDE interfaces per channel)
// - ATA hard-disk devices
// - ATAPI CD-ROM devices
// ATA/ATAPI-6 IDE Controller
//
// References
// - [ATA-6]
// AT Attachment with Packet Interface - 6 (ATA/ATAPI-6) (Rev. 3a; Dec. 14, 2001)
// https://technion-csl.github.io/ose/readings/hardware/ATA-d1410r3a.pdf
// - [SAM-3]
// SCSI Architecture Model - 3 (SAM-3) (Rev. 14; Sep. 21, 2004)
// https://dn790004.ca.archive.org/0/items/SCSISpecificationDocumentsSCSIDocuments/SCSI%20Architecture%20Model/SCSI%20Architecture%20Model%203%20rev%2014.pdf
// - [SPC-3]
// SCSI Primary Commands - 3 (SPC-3) (Jul 20, 2008)
// https://www.t10.org/ftp/t10/document.08/08-309r0.pdf
// - [MMC-3]
// SCSI Multimedia Commands - 3 (MMC-3) (Rev. 10g; Nov. 12, 2001)
// https://ia902808.us.archive.org/33/items/mmc3r10g/mmc3r10g.pdf
// - [CD-SCSI-2]
// PROPOSAL FOR CD-ROM IN SCSI-2 (X3T9.2/87) (Rev. 0, Jun. 30, 1987)
// https://www.t10.org/ftp/x3t9.2/document.87/87-106r0.txt
// https://www.t10.org/ftp/x3t9.2/document.87/87-106r1.txt (errata to r0)
const CDROM_SECTOR_SIZE = 2048;
const HD_SECTOR_SIZE = 512;
@ -110,51 +102,24 @@ const ATA_CMD_MEDIA_LOCK = 0xDE; // see [ATA-6] 8.20
const ATA_CMD_SECURITY_FREEZE_LOCK = 0xF5; // see [ATA-6] 8.41
const ATA_CMD_SET_MAX = 0xF9; // see [ATA-6] 8.47
// ATAPI commands
const ATAPI_CMD_TEST_UNIT_READY = 0x00; // see [SPC-3] 6.33
const ATAPI_CMD_REQUEST_SENSE = 0x03; // see [SPC-3] 6.27
const ATAPI_CMD_INQUIRY = 0x12; // see [SPC-3] 6.4
const ATAPI_CMD_MODE_SENSE_6 = 0x1A; // see [SPC-3] 6.9
const ATAPI_CMD_MODE_SENSE_10 = 0x5A; // see [SPC-3] 6.10
const ATAPI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL = 0x1E; // see [SPC-3] 6.13
const ATAPI_CMD_READ_CAPACITY = 0x25; // see [MMC-3] 5.16
const ATAPI_CMD_READ = 0x28; // see [MMC-3] 5.14
const ATAPI_CMD_READ_SUBCHANNEL = 0x42; // see [MMC-3] 5.22
const ATAPI_CMD_READ_TOC_PMA_ATIP = 0x43; // see [MMC-3] 5.23
const ATAPI_CMD_GET_CONFIGURATION = 0x46; // see [MMC-3] 5.5
const ATAPI_CMD_READ_DISK_INFORMATION = 0x51; // see [MMC-3] 5.19
const ATAPI_CMD_READ_TRACK_INFORMATION = 0x52; // see [MMC-3] 5.24
const ATAPI_CMD_MECHANISM_STATUS = 0xBD; // see [MMC-3] 5.9
const ATAPI_CMD_GET_EVENT_STATUS_NOTIFICATION = 0x4A; // see [MMC-3] 5.6
const ATAPI_CMD_READ_CD = 0xBE; // see [MMC-3] 5.17
//const ATAPI_CMD_LOAD_UNLOAD_MEDIUM = 0xA6; // see [MMC-3] 5.8, TODO: not implemented, might be useful
// ATAPI Status Code, see [SAM-3] 5.3.1
const ATAPI_SC_GOOD = 0x00;
const ATAPI_SC_CHECK_CONDITION = 0x02;
const ATAPI_SC_CONDITION_MET = 0x04;
const ATAPI_SC_BUSY = 0x08;
const ATAPI_SC_INTERMEDIATE = 0x10;
const ATAPI_SC_INTERMEDIATE_CONDITION_MET = 0x14;
const ATAPI_SC_RESERVATION_CONFLICT = 0x18;
const ATAPI_SC_TASK_SET_FULL = 0x28;
const ATAPI_SC_ACA_ACTIVE = 0x30;
const ATAPI_SC_TASK_ABORTED = 0x40;
// ATAPI 4-bit Sense Key, see [SPC-3] 4.5.6 (Table 27)
const ATAPI_SK_NO_SENSE = 0x00;
const ATAPI_SK_RECOVERED_ERROR = 0x01;
const ATAPI_SK_NOT_READY = 0x02;
const ATAPI_SK_MEDIUM_ERROR = 0x03;
const ATAPI_SK_HARDWARE_ERROR = 0x04;
const ATAPI_SK_ILLEGAL_REQUEST = 0x05;
const ATAPI_SK_UNIT_ATTENTION = 0x06;
const ATAPI_SK_DATA_PROTECT = 0x07;
const ATAPI_SK_BLANK_CHECK = 0x08;
const ATAPI_SK_ABORTED_COMMAND = 0x0B;
// ATAPI 8-bit Additional Sense Code, see [SPC-3] 4.5.6 (Table 28)
const ATAPI_ASC_MEDIUM_NOT_PRESENT = 0x3A;
// ATAPI (SCSI-2) commands, see [CD-SCSI-2]
const ATAPI_CMD_TEST_UNIT_READY = 0x00;
const ATAPI_CMD_REQUEST_SENSE = 0x03;
const ATAPI_CMD_INQUIRY = 0x12;
const ATAPI_CMD_MODE_SENSE_6 = 0x1A;
const ATAPI_CMD_MODE_SENSE_10 = 0x5A;
const ATAPI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL = 0x1E;
const ATAPI_CMD_READ_CAPACITY = 0x25;
const ATAPI_CMD_READ = 0x28;
const ATAPI_CMD_READ_SUBCHANNEL = 0x42;
const ATAPI_CMD_READ_TOC_PMA_ATIP = 0x43;
const ATAPI_CMD_GET_CONFIGURATION = 0x46;
const ATAPI_CMD_READ_DISK_INFORMATION = 0x51;
const ATAPI_CMD_READ_TRACK_INFORMATION = 0x52;
const ATAPI_CMD_MECHANISM_STATUS = 0xBD;
const ATAPI_CMD_GET_EVENT_STATUS_NOTIFICATION = 0x4A;
const ATAPI_CMD_READ_CD = 0xBE;
//const ATAPI_CMD_LOAD_UNLOAD_MEDIUM = 0xA6; // TODO: not implemented, might be useful
/**
* @constructor
@ -1162,35 +1127,30 @@ IDEInterface.prototype.atapi_handle = function()
this.status_reg = ATA_SR_DRDY|ATA_SR_DSC|ATA_SR_DRQ;
this.data[0] = 0x80 | 0x70; // valid | SCSI error code
this.data[2] = this.error_reg >> 4; // SCSI sense key (TODO: always 0, which means no errors or warnings)
this.data[7] = 8; // SCSI additional sense length, fixed
this.data[7] = 8; // SCSI additional sense length (fixed 8 for this error code 0x70)
this.data[12] = 0; // SCSI additional sense code
this.data[13] = 0; // SCSI additional sense code qualifier
break;
case ATAPI_CMD_INQUIRY:
var length = this.data[4];
this.status_reg = ATA_SR_DRDY|ATA_SR_DSC|ATA_SR_DRQ;
dbg_log(this.name + ": ATAPI inquiry: " + h(this.data[1], 2) + " length=" + length, LOG_DISK);
// http://www.t10.org/ftp/x3t9.2/document.87/87-106r0.txt
//this.data_allocate(36);
// for data layout see [CD-SCSI-2] "INQUIRY Command"
this.data.set([
0x05, 0x80, 0x01, 0x31,
// additional length
31,
0, 0, 0,
// 8
// 0: Device-type, Removable, ANSI-Version, Response Format
this.drive_connected ? 0x05 : 0x7F, 0x80, 0x01, 0x31, // TODO: drive_connected likely not needed
// 4: Additional length, Reserved, Reserved, Reserved
0x31, 0, 0, 0,
// 8: Vendor Identification "SONY "
0x53, 0x4F, 0x4E, 0x59,
0x20, 0x20, 0x20, 0x20,
// 16
// 16: Product Identification "CD-ROM CDU-1000 "
0x43, 0x44, 0x2D, 0x52,
0x4F, 0x4D, 0x20, 0x43,
0x44, 0x55, 0x2D, 0x31,
0x30, 0x30, 0x30, 0x20,
// 32
// 32: Product Revision Level "1.1a"
0x31, 0x2E, 0x31, 0x61,
]);
this.data_end = this.data_length = Math.min(36, length);
@ -1240,9 +1200,9 @@ IDEInterface.prototype.atapi_handle = function()
case ATAPI_CMD_READ_SUBCHANNEL:
var length = this.data[8];
dbg_log(this.name + ": ATAPI read subchannel: length=" + length, LOG_DISK);
this.data_allocate(Math.min(8, length));
this.data_end = this.data_length;
dbg_log(this.name + ": ATAPI read subchannel: length=" + length, LOG_DISK);
this.status_reg = ATA_SR_DRDY|ATA_SR_DSC|ATA_SR_DRQ;
break;