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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Storage/RamdiskController.h>
namespace Kernel {
NonnullRefPtr<RamdiskController> RamdiskController::initialize()
{
return adopt_ref(*new RamdiskController());
}
bool RamdiskController::reset()
{
TODO();
}
bool RamdiskController::shutdown()
{
TODO();
}
size_t RamdiskController::devices_count() const
{
return m_devices.size();
}
void RamdiskController::start_request(const StorageDevice&, AsyncBlockDeviceRequest&)
{
VERIFY_NOT_REACHED();
}
void RamdiskController::complete_current_request(AsyncDeviceRequest::RequestResult)
{
VERIFY_NOT_REACHED();
}
RamdiskController::RamdiskController()
: StorageController()
{
// Populate ramdisk controllers from Multiboot boot modules, if any.
size_t count = 0;
for (auto& used_memory_range : MM.used_memory_ranges()) {
if (used_memory_range.type == Memory::UsedMemoryRangeType::BootModule) {
size_t length = Memory::page_round_up(used_memory_range.end.get()) - used_memory_range.start.get();
auto region_or_error = MM.allocate_kernel_region(used_memory_range.start, length, "Ramdisk", Memory::Region::Access::ReadWrite);
if (region_or_error.is_error()) {
dmesgln("RamdiskController: Failed to allocate kernel region of size {}", length);
} else {
m_devices.append(RamdiskDevice::create(*this, region_or_error.release_value(), 6, count));
}
count++;
}
}
}
RamdiskController::~RamdiskController()
{
}
RefPtr<StorageDevice> RamdiskController::device(u32 index) const
{
if (index >= m_devices.size())
return nullptr;
return m_devices[index];
}
}
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