mirror of
https://github.com/RGBCube/serenity
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566c5d1e99
This commit moves the KResult and KResultOr objects to Kernel/API to signify that they may now be freely used by userspace code at points where a syscall-related error result is to be expected. It also exposes KResult and KResultOr to the global namespace to make it nicer to use for userspace code.
39 lines
896 B
C++
39 lines
896 B
C++
/*
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* Copyright (c) 2021, Luke Wilde <lukew@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/RefCounted.h>
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#include <Kernel/API/KResult.h>
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#include <Kernel/Bus/USB/USBDevice.h>
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#include <Kernel/Bus/USB/USBTransfer.h>
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namespace Kernel::USB {
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class USBController : public RefCounted<USBController> {
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public:
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virtual ~USBController() = default;
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virtual KResult initialize() = 0;
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virtual KResult reset() = 0;
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virtual KResult stop() = 0;
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virtual KResult start() = 0;
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virtual KResultOr<size_t> submit_control_transfer(Transfer&) = 0;
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u8 allocate_address();
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private:
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u8 m_next_device_index { 1 };
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IntrusiveListNode<USBController, NonnullRefPtr<USBController>> m_controller_list_node;
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public:
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using List = IntrusiveList<USBController, NonnullRefPtr<USBController>, &USBController::m_controller_list_node>;
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};
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}
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