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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Memory.h>
#include <AK/StringView.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/Storage/IDEChannel.h>
#include <Kernel/Storage/IDEController.h>
#include <Kernel/Storage/PATADiskDevice.h>
namespace Kernel {
NonnullRefPtr<PATADiskDevice> PATADiskDevice::create(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 cylinders, u16 heads, u16 spt, u16 capabilities, int major, int minor)
{
return adopt(*new PATADiskDevice(controller, channel, type, interface_type, cylinders, heads, spt, capabilities, major, minor));
}
PATADiskDevice::PATADiskDevice(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 cylinders, u16 heads, u16 spt, u16 capabilities, int major, int minor)
: StorageDevice(controller, major, minor, 512, 0)
, m_cylinders(cylinders)
, m_heads(heads)
, m_sectors_per_track(spt)
, m_capabilities(capabilities)
, m_channel(channel)
, m_drive_type(type)
, m_interface_type(interface_type)
{
}
PATADiskDevice::~PATADiskDevice()
{
}
const char* PATADiskDevice::class_name() const
{
return "PATADiskDevice";
}
void PATADiskDevice::start_request(AsyncBlockDeviceRequest& request)
{
bool use_dma = !m_channel.m_io_group.bus_master_base().is_null() && m_channel.m_dma_enabled.resource();
m_channel.start_request(request, use_dma, is_slave(), m_capabilities);
}
String PATADiskDevice::device_name() const
{
return String::formatted("hd{:c}", 'a' + minor());
}
size_t PATADiskDevice::max_addressable_block() const
{
return m_cylinders * m_heads * m_sectors_per_track;
}
bool PATADiskDevice::is_slave() const
{
return m_drive_type == DriveType::Slave;
}
}
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