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73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/HashMap.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/PCI/Access.h>
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#include <Kernel/VM/AnonymousVMObject.h>
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#include <Kernel/VM/PhysicalRegion.h>
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#include <Kernel/VM/Region.h>
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#include <Kernel/VM/VMObject.h>
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namespace Kernel {
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namespace PCI {
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class MMIOAccess final : public Access {
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public:
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static void initialize(PhysicalAddress mcfg);
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virtual void enumerate_all(Function<void(Address, ID)>&) override final;
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virtual const char* access_type() const override { return "MMIO-Access"; };
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virtual u32 segment_count() const override;
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virtual void write8_field(Address address, u32, u8) override final;
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virtual void write16_field(Address address, u32, u16) override final;
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virtual void write32_field(Address address, u32, u32) override final;
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protected:
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explicit MMIOAccess(PhysicalAddress mcfg);
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private:
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virtual u8 read8_field(Address address, u32) override final;
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virtual u16 read16_field(Address address, u32) override final;
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virtual u32 read32_field(Address address, u32) override final;
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void map_device(Address address);
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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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OwnPtr<Region> m_mmio_window_region;
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ChangeableAddress m_mapped_address;
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};
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}
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}
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