mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:02:44 +00:00
90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Types.h>
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#include <Kernel/Storage/RamdiskController.h>
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namespace Kernel {
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NonnullRefPtr<RamdiskController> RamdiskController::initialize()
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{
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return adopt(*new RamdiskController());
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}
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bool RamdiskController::reset()
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{
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TODO();
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}
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bool RamdiskController::shutdown()
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{
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TODO();
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}
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size_t RamdiskController::devices_count() const
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{
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return m_devices.size();
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}
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void RamdiskController::start_request(const StorageDevice&, AsyncBlockDeviceRequest&)
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{
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ASSERT_NOT_REACHED();
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}
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void RamdiskController::complete_current_request(AsyncDeviceRequest::RequestResult)
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{
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ASSERT_NOT_REACHED();
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}
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RamdiskController::RamdiskController()
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: StorageController()
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{
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// Populate ramdisk controllers from Multiboot boot modules, if any.
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size_t count = 0;
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for (auto used_memory_range : MemoryManager::the().used_memory_ranges()) {
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if (used_memory_range.type == UsedMemoryRangeType::BootModule) {
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size_t length = PAGE_ROUND_UP(used_memory_range.end.get()) - used_memory_range.start.get();
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auto region = MemoryManager::the().allocate_kernel_region(used_memory_range.start, length, "Ramdisk", Region::Access::Read | Region::Access::Write);
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m_devices.append(RamdiskDevice::create(*this, move(region), 6, count));
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count++;
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}
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}
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}
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RamdiskController::~RamdiskController()
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{
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}
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RefPtr<StorageDevice> RamdiskController::device(u32 index) const
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{
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if (index >= m_devices.size())
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return nullptr;
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return m_devices[index];
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}
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}
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