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/*
* Copyright (c) 2020-2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Bus/PCI/API.h>
#include <Kernel/FileSystem/ProcFS.h>
#include <Kernel/Sections.h>
#include <Kernel/Storage/ATA/ATADiskDevice.h>
#include <Kernel/Storage/ATA/BMIDEChannel.h>
#include <Kernel/Storage/ATA/IDEController.h>
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<IDEController> IDEController::initialize()
{
return adopt_ref(*new IDEController());
}
bool IDEController::reset()
{
TODO();
}
bool IDEController::shutdown()
{
TODO();
}
size_t IDEController::devices_count() const
{
size_t count = 0;
for (u32 index = 0; index < 4; index++) {
if (!device(index).is_null())
count++;
}
return count;
}
void IDEController::start_request(const ATADevice& device, AsyncBlockDeviceRequest& request)
{
auto& address = device.ata_address();
VERIFY(address.subport < 2);
switch (address.port) {
case 0:
m_channels[0].start_request(request, address.subport == 0 ? false : true, device.ata_capabilites());
return;
case 1:
m_channels[1].start_request(request, address.subport == 0 ? false : true, device.ata_capabilites());
return;
}
VERIFY_NOT_REACHED();
}
void IDEController::complete_current_request(AsyncDeviceRequest::RequestResult)
{
VERIFY_NOT_REACHED();
}
UNMAP_AFTER_INIT IDEController::IDEController()
{
}
UNMAP_AFTER_INIT IDEController::~IDEController() = default;
RefPtr<StorageDevice> IDEController::device_by_channel_and_position(u32 index) const
{
switch (index) {
case 0:
return m_channels[0].master_device();
case 1:
return m_channels[0].slave_device();
case 2:
return m_channels[1].master_device();
case 3:
return m_channels[1].slave_device();
}
VERIFY_NOT_REACHED();
}
RefPtr<StorageDevice> IDEController::device(u32 index) const
{
NonnullRefPtrVector<StorageDevice> connected_devices;
for (size_t index = 0; index < 4; index++) {
auto checked_device = device_by_channel_and_position(index);
if (checked_device.is_null())
continue;
connected_devices.append(checked_device.release_nonnull());
}
if (index >= connected_devices.size())
return nullptr;
return connected_devices[index];
}
}
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