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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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41
Kernel/Storage/ATA/PCIIDEController.h Normal file
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/*
* Copyright (c) 2020-2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Storage/ATA/IDEChannel.h>
#include <Kernel/Storage/ATA/IDEController.h>
#include <Kernel/Storage/StorageDevice.h>
namespace Kernel {
class AsyncBlockDeviceRequest;
class PCIIDEController final : public IDEController
, public PCI::Device {
public:
static NonnullRefPtr<PCIIDEController> initialize(PCI::DeviceIdentifier const&, bool force_pio);
bool is_bus_master_capable() const;
bool is_pci_native_mode_enabled() const;
private:
bool is_pci_native_mode_enabled_on_primary_channel() const;
bool is_pci_native_mode_enabled_on_secondary_channel() const;
PCIIDEController(PCI::DeviceIdentifier const&, bool force_pio);
RefPtr<StorageDevice> device_by_channel_and_position(u32 index) const;
void initialize(bool force_pio);
void detect_disks();
// FIXME: Find a better way to get the ProgrammingInterface
PCI::ProgrammingInterface m_prog_if;
PCI::InterruptLine m_interrupt_line;
};
}