mirror of
https://github.com/RGBCube/serenity
synced 2025-05-20 18:15:07 +00:00
bb58a4d943
The default template argument is only used in one place, and it looks like it was probably just an oversight. The rest of the Kernel code all uses u8 as the type. So lets make that the default and remove the unused template argument, as there doesn't seem to be a reason to allow the size to be customizable.
71 lines
2 KiB
C++
71 lines
2 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <AK/NonnullOwnPtrVector.h>
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#include <AK/OwnPtr.h>
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#include <AK/Types.h>
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#include <Kernel/ACPI/Definitions.h>
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#include <Kernel/Bus/PCI/Access.h>
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#include <Kernel/Locking/Spinlock.h>
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#include <Kernel/Memory/AnonymousVMObject.h>
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#include <Kernel/Memory/PhysicalRegion.h>
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#include <Kernel/Memory/Region.h>
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#include <Kernel/Memory/VMObject.h>
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namespace Kernel {
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namespace PCI {
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#define PCI_MMIO_CONFIG_SPACE_SIZE 4096
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class MMIOAccess : public Access {
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public:
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class MMIOSegment {
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public:
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MMIOSegment(PhysicalAddress, u8, u8);
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u8 get_start_bus() const;
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u8 get_end_bus() const;
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size_t get_size() const;
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PhysicalAddress get_paddr() const;
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private:
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PhysicalAddress m_base_addr;
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u8 m_start_bus;
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u8 m_end_bus;
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};
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static void initialize(PhysicalAddress mcfg);
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private:
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PhysicalAddress determine_memory_mapped_bus_region(u32 segment, u8 bus) const;
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void map_bus_region(u32, u8);
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VirtualAddress get_device_configuration_space(Address address);
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Spinlock m_access_lock;
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u8 m_mapped_bus { 0 };
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OwnPtr<Memory::Region> m_mapped_region;
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protected:
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explicit MMIOAccess(PhysicalAddress mcfg);
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virtual u32 segment_count() const override;
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virtual void enumerate_hardware(Function<void(Address, ID)>) override;
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virtual void write8_field(Address address, u32, u8) override;
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virtual void write16_field(Address address, u32, u16) override;
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virtual void write32_field(Address address, u32, u32) override;
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virtual u8 read8_field(Address address, u32) override;
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virtual u16 read16_field(Address address, u32) override;
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virtual u32 read32_field(Address address, u32) override;
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virtual u8 segment_start_bus(u32) const override;
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virtual u8 segment_end_bus(u32) const override;
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PhysicalAddress m_mcfg;
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HashMap<u16, MMIOSegment> m_segments;
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};
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}
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}
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