mirror of
https://github.com/fergalmoran/ladybird.git
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74 lines
3.2 KiB
C++
74 lines
3.2 KiB
C++
/*
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* Copyright (c) 2022, 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/HashMap.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/Locking/Spinlock.h>
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namespace Kernel::PCI {
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AK_TYPEDEF_DISTINCT_ORDERED_ID(u8, BusNumber);
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AK_TYPEDEF_DISTINCT_ORDERED_ID(u8, DeviceNumber);
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AK_TYPEDEF_DISTINCT_ORDERED_ID(u8, FunctionNumber);
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struct PCIConfiguration {
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FlatPtr mmio_32bit_base { 0 };
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FlatPtr mmio_32bit_end { 0 };
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FlatPtr mmio_64bit_base { 0 };
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FlatPtr mmio_64bit_end { 0 };
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// The keys contains the bus, device & function at the same offsets as OpenFirmware PCI addresses,
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// with the least significant 8 bits being the interrupt pin.
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HashMap<u32, u64> masked_interrupt_mapping;
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u32 interrupt_mask { 0 };
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};
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class HostController {
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public:
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virtual ~HostController() = default;
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virtual void write8_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u8 value) = 0;
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virtual void write16_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u16 value) = 0;
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virtual void write32_field(BusNumber, DeviceNumber, FunctionNumber, u32 field, u32 value) = 0;
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virtual u8 read8_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) = 0;
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virtual u16 read16_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) = 0;
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virtual u32 read32_field(BusNumber, DeviceNumber, FunctionNumber, u32 field) = 0;
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u32 domain_number() const { return m_domain.domain_number(); }
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void enumerate_attached_devices(Function<void(EnumerableDeviceIdentifier const&)> callback, Function<void(EnumerableDeviceIdentifier const&)> post_bridge_callback = nullptr);
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void configure_attached_devices(PCIConfiguration&);
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private:
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void enumerate_bus(Function<void(EnumerableDeviceIdentifier const&)> const& callback, Function<void(EnumerableDeviceIdentifier const&)>& post_bridge_callback, BusNumber, bool recursive_search_into_bridges);
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void enumerate_functions(Function<void(EnumerableDeviceIdentifier const&)> const& callback, Function<void(EnumerableDeviceIdentifier const&)>& post_bridge_callback, BusNumber, DeviceNumber, FunctionNumber, bool recursive_search_into_bridges);
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void enumerate_device(Function<void(EnumerableDeviceIdentifier const&)> const& callback, Function<void(EnumerableDeviceIdentifier const&)>& post_bridge_callback, BusNumber bus, DeviceNumber device, bool recursive_search_into_bridges);
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void write8_field(BusNumber, DeviceNumber, FunctionNumber, RegisterOffset field, u8 value);
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void write16_field(BusNumber, DeviceNumber, FunctionNumber, RegisterOffset field, u16 value);
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void write32_field(BusNumber, DeviceNumber, FunctionNumber, RegisterOffset field, u32 value);
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u8 read8_field(BusNumber, DeviceNumber, FunctionNumber, RegisterOffset field);
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u16 read16_field(BusNumber, DeviceNumber, FunctionNumber, RegisterOffset field);
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Optional<u8> get_capabilities_pointer_for_function(BusNumber, DeviceNumber, FunctionNumber);
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Vector<Capability> get_capabilities_for_function(BusNumber, DeviceNumber, FunctionNumber);
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protected:
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explicit HostController(PCI::Domain const& domain);
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const PCI::Domain m_domain;
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private:
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Bitmap m_enumerated_buses;
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};
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}
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