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Kernel/USBMS: Add a basic UAS driver
For now we only support USB <3.0 devices, as we don't support streams. We also don't leverage the benefits of UAS, as we pretend to have a queue depth of 1, ie are single threaded. To test this driver, you can use the following command: ``` SERENITY_BOOT_DRIVE=usb-uas Meta/serenity.sh run x86_64 Clang ```
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/* | ||
* Copyright (c) 2024, Leon Albrecht <[email protected]> | ||
* | ||
* SPDX-License-Identifier: BSD-2-Clause | ||
*/ | ||
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#pragma once | ||
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#include <AK/Format.h> | ||
#include <AK/StringView.h> | ||
#include <AK/Types.h> | ||
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namespace Kernel::SCSI { | ||
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// SAM 4: 5.3.1 Status codes | ||
enum class StatusCode : u8 { | ||
Good = 0x00, | ||
CheckCondition = 0x02, | ||
ConditionMet = 0x04, | ||
Busy = 0x08, | ||
// Obsolete = 0x10, | ||
// Obsolete = 0x14, | ||
ReservationConflict = 0x18, | ||
// Obsolete = 0x22, was Command Terminated | ||
TaskSetFull = 0x28, | ||
ACAActive = 0x30, | ||
TaskAborted = 0x40, | ||
}; | ||
constexpr StringView to_string(StatusCode status) | ||
{ | ||
using enum StatusCode; | ||
switch (status) { | ||
case Good: | ||
return "Good"sv; | ||
case CheckCondition: | ||
return "Check Condition"sv; | ||
case ConditionMet: | ||
return "Condition Met"sv; | ||
case Busy: | ||
return "Busy"sv; | ||
case ReservationConflict: | ||
return "Reservation Conflict"sv; | ||
case TaskSetFull: | ||
return "Task Set Full"sv; | ||
case ACAActive: | ||
return "ACA Active"sv; | ||
case TaskAborted: | ||
return "Task Aborted"sv; | ||
default: | ||
return "Unknown"sv; | ||
} | ||
} | ||
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} | ||
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namespace AK { | ||
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template<> | ||
struct Formatter<Kernel::SCSI::StatusCode> : Formatter<FormatString> { | ||
ErrorOr<void> format(FormatBuilder& builder, Kernel::SCSI::StatusCode value) | ||
{ | ||
return Formatter<FormatString>::format(builder, "{:02x}({})"sv, to_underlying(value), Kernel::SCSI::to_string(value)); | ||
} | ||
}; | ||
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} |
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