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93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/*
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* Copyright (c) 2020, 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/Bitmap.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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#include <Kernel/FileSystem/SysFS.h>
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namespace Kernel::PCI {
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class PCIBusSysFSDirectory final : public SysFSDirectory {
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public:
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static void initialize();
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private:
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PCIBusSysFSDirectory();
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};
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class PCIDeviceSysFSDirectory final : public SysFSDirectory {
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public:
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static NonnullRefPtr<PCIDeviceSysFSDirectory> create(const SysFSDirectory&, Address);
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const Address& address() const { return m_address; }
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private:
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PCIDeviceSysFSDirectory(const SysFSDirectory&, Address);
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Address m_address;
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};
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class PCIDeviceAttributeSysFSComponent : public SysFSComponent {
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public:
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static NonnullRefPtr<PCIDeviceAttributeSysFSComponent> create(String name, const PCIDeviceSysFSDirectory& device, size_t offset, size_t field_bytes_width);
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virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, FileDescription*) const override;
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virtual ~PCIDeviceAttributeSysFSComponent() {};
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virtual size_t size() const override;
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protected:
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virtual OwnPtr<KBuffer> try_to_generate_buffer() const;
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PCIDeviceAttributeSysFSComponent(String name, const PCIDeviceSysFSDirectory& device, size_t offset, size_t field_bytes_width);
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NonnullRefPtr<PCIDeviceSysFSDirectory> m_device;
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size_t m_offset;
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size_t m_field_bytes_width;
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};
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class Access {
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public:
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void enumerate(Function<void(Address, ID)>&) const;
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void enumerate_bus(int type, u8 bus, Function<void(Address, ID)>&, bool recursive);
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void enumerate_functions(int type, u8 bus, u8 device, u8 function, Function<void(Address, ID)>& callback, bool recursive);
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void enumerate_device(int type, u8 bus, u8 device, Function<void(Address, ID)>& callback, bool recursive);
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static Access& the();
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static bool is_initialized();
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virtual uint32_t segment_count() const = 0;
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virtual uint8_t segment_start_bus(u32 segment) const = 0;
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virtual uint8_t segment_end_bus(u32 segment) const = 0;
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virtual const char* access_type() const = 0;
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virtual void write8_field(Address address, u32 field, u8 value) = 0;
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virtual void write16_field(Address address, u32 field, u16 value) = 0;
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virtual void write32_field(Address address, u32 field, u32 value) = 0;
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virtual u8 read8_field(Address address, u32 field) = 0;
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virtual u16 read16_field(Address address, u32 field) = 0;
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virtual u32 read32_field(Address address, u32 field) = 0;
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PhysicalID get_physical_id(Address address) const;
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protected:
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virtual void enumerate_hardware(Function<void(Address, ID)>) = 0;
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u8 early_read8_field(Address address, u32 field);
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u16 early_read16_field(Address address, u32 field);
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u32 early_read32_field(Address address, u32 field);
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u16 early_read_type(Address address);
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Access();
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virtual ~Access() = default;
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Vector<PhysicalID> m_physical_ids;
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Bitmap m_enumerated_buses;
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};
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}
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