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Kernel/Storage: Don't try to enumerate PCI adapters if PCI is disabled

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If there's no PCI bus, then it's safe to assume that we run on a x86
machine that has an ISA IDE controller in the system. In such case, we
just instantiate a ISAIDEController object that assumes fixed locations
of IDE IO ports.
This commit is contained in:
Liav A 2022-01-21 16:18:31 +02:00 • committed by Andreas Kling
parent fafa339264
commit 30eeba1981
11 changed files with 283 additions and 142 deletions
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44
Kernel/Storage/ATA/ISAIDEController.cpp Normal file
View file

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/*
* Copyright (c) 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/ISAIDEController.h>
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<ISAIDEController> ISAIDEController::initialize()
{
return adopt_ref(*new ISAIDEController());
}
UNMAP_AFTER_INIT ISAIDEController::ISAIDEController()
{
initialize_channels();
}
UNMAP_AFTER_INIT void ISAIDEController::initialize_channels()
{
auto primary_base_io = IOAddress(0x1F0);
auto primary_control_io = IOAddress(0x3F6);
auto secondary_base_io = IOAddress(0x170);
auto secondary_control_io = IOAddress(0x376);
m_channels.append(IDEChannel::create(*this, { primary_base_io, primary_control_io }, IDEChannel::ChannelType::Primary));
m_channels[0].enable_irq();
m_channels.append(IDEChannel::create(*this, { secondary_base_io, secondary_control_io }, IDEChannel::ChannelType::Secondary));
m_channels[1].enable_irq();
dbgln("ISA IDE controller detected and initialized");
}
}