mirror of
https://github.com/RGBCube/serenity
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108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
/*
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* Copyright (c) 2023, Leon Albrecht <leon.a@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/StringView.h>
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#include <AK/Types.h>
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namespace Kernel::USB::MassStorage {
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// https://www.usb.org/sites/default/files/Mass_Storage_Specification_Overview_v1.4_2-19-2010.pdf
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// 2
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enum class SubclassCode : u8 {
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NotReported = 0x00,
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RBC = 0x01,
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MMC5 = 0x02, // ATAPI
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Obsolete_QIC157 = 0x03,
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UFI = 0x04, // Floppy
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Obsolete_SFF8070i = 0x05,
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SCSI_transparent = 0x06,
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LSD_FS = 0x07,
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IEEE1667 = 0x08,
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// Reserved: 0x09 - 0xFE
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VendorSpecific = 0xFF
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};
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constexpr StringView subclass_string(SubclassCode code)
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{
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switch (code) {
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case SubclassCode::NotReported:
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return "Not Reported"sv;
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case SubclassCode::RBC:
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return "RBC"sv;
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case SubclassCode::MMC5:
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return "MMC-5 (ATAPI)"sv;
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case SubclassCode::Obsolete_QIC157:
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return "QIC157 (Obsolete)"sv;
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case SubclassCode::UFI:
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return "UFI"sv;
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case SubclassCode::Obsolete_SFF8070i:
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return "SFF8070i (Obsolete)"sv;
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case SubclassCode::SCSI_transparent:
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return "SCSI-transparent"sv;
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case SubclassCode::LSD_FS:
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return "LSD FS"sv;
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case SubclassCode::IEEE1667:
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return "IEEE1667"sv;
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case SubclassCode::VendorSpecific:
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return "Vendor Specific"sv;
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}
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return "Reserved"sv;
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}
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// 3
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enum class TransportProtocol : u8 {
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CBI_completion_interrupt = 0x00, // Control/Bulk/Interrupt
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CBI_no_completion_interrupt = 0x01, // Control/Bulk/Interrupt
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Obsolete = 0x02,
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// Reserved: 0x03 - 0x4F
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BBB = 0x50, // Bulk-only
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// Reserved: 0x51 - 0x61
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UAS = 0x62,
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// Reserved: 0x63 - 0xFE
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VendorSpecific = 0xFF
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};
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constexpr StringView transport_protocol_string(TransportProtocol protocol)
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{
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switch (protocol) {
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case TransportProtocol::CBI_completion_interrupt:
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return "Control/Bulk/Interrupt with completion interrupt"sv;
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case TransportProtocol::CBI_no_completion_interrupt:
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return "Control/Bulk/Interrupt without completion interrupt"sv;
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case TransportProtocol::Obsolete:
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return "Obsolete"sv;
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case TransportProtocol::BBB:
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return "Bulk only"sv;
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case TransportProtocol::UAS:
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return "UAS"sv;
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case TransportProtocol::VendorSpecific:
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return "Vendor Specific"sv;
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}
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return "Reserved"sv;
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}
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// 4
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enum class RequestCodes : u8 {
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ADSC = 0x00, // Accept Device Specific Command (CBI) - also alias USB-request 00h Get Status
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// Reserved/alias USB-bRequest: 0x01 - 0x0D
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// Reserved: 0x0E - 0XFB
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GetRequest = 0xFC,
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PutRequest = 0xFD,
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GetMaxLun = 0xFE, // GML (BBB)
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BulkOnlyMassStorageReset = 0xFF // BOMSR (BBB)
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};
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// 5
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enum class ClassSpecificDescriptorCodes : u8 {
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// Undefined by Mass Storage: 0x00 - 0x23
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PipeUsageClassSpecific = 0x24 // UAS
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// Undefined by Mass Storage: 0x25 - 0xFF
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};
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}
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