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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/HostBridge.h>
#include <Kernel/Locking/Spinlock.h>
namespace Kernel::PCI {
class MemoryBackedHostBridge : public HostBridge {
public:
static NonnullOwnPtr<MemoryBackedHostBridge> must_create(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;
protected:
MemoryBackedHostBridge(PCI::Domain const&, PhysicalAddress);
// Memory-mapped access operations
void map_bus_region(BusNumber);
VirtualAddress get_device_configuration_memory_mapped_space(BusNumber, DeviceNumber, FunctionNumber);
PhysicalAddress determine_memory_mapped_bus_base_address(BusNumber) const;
// Data-members for accessing Memory mapped PCI devices' configuration spaces
BusNumber m_mapped_bus { 0 };
OwnPtr<Memory::Region> m_mapped_bus_region;
PhysicalAddress m_start_address;
};
}
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