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Kernel/PCI: Add basic support for the VMD PCI bridge device

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Liav A 2022-01-15 09:17:07 +02:00 • committed by Andreas Kling
parent df73e8b46b
commit eb9c8f3895
7 changed files with 161 additions and 2 deletions
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35
Kernel/Bus/PCI/Controller/VolumeManagementDevice.h Normal file
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/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Bitmap.h>
#include <AK/Vector.h>
#include <Kernel/Bus/PCI/Controller/MemoryBackedHostBridge.h>
#include <Kernel/Locking/Spinlock.h>
namespace Kernel::PCI {
class VolumeManagementDevice final : public MemoryBackedHostBridge {
public:
static NonnullOwnPtr<VolumeManagementDevice> must_create(PCI::DeviceIdentifier const& device_identifier);
private:
VolumeManagementDevice(PCI::Domain const&, PhysicalAddress);
virtual void write8_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u8 value) override;
virtual void write16_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u16 value) override;
virtual void write32_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u32 value) override;
virtual u8 read8_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) override;
virtual u16 read16_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) override;
virtual u32 read32_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) override;
// Note: All read and writes must be done with a spinlock because
// Linux says that CPU might deadlock otherwise if access is not serialized.
Spinlock m_config_lock;
};
}