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85 lines
2.2 KiB
C++
85 lines
2.2 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/Format.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/StringBuilder.h>
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#include <AK/Types.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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namespace Kernel::PCI {
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enum class InterruptType {
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PIN,
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MSI,
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MSIX
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};
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struct InterruptRange {
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u8 m_start_irq { 0 };
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u8 m_irq_count { 0 };
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InterruptType m_type { InterruptType::PIN };
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};
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struct [[gnu::packed]] MSIxTableEntry {
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u32 address_low;
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u32 address_high;
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u32 data;
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u32 vector_control;
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};
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class Device {
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public:
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DeviceIdentifier const& device_identifier() const { return *m_pci_identifier; }
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virtual ~Device() = default;
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virtual StringView device_name() const = 0;
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void enable_pin_based_interrupts() const;
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void disable_pin_based_interrupts() const;
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bool is_msi_capable() const;
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bool is_msix_capable() const;
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void enable_message_signalled_interrupts();
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void disable_message_signalled_interrupts();
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void enable_extended_message_signalled_interrupts();
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void disable_extended_message_signalled_interrupts();
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ErrorOr<InterruptType> reserve_irqs(u8 number_of_irqs, bool msi);
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ErrorOr<u8> allocate_irq(u8 index);
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PCI::InterruptType get_interrupt_type();
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void enable_interrupt(u8 irq);
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void disable_interrupt(u8 irq);
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protected:
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explicit Device(DeviceIdentifier const& pci_identifier);
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private:
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PhysicalAddress msix_table_entry_address(u8 irq);
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private:
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NonnullRefPtr<DeviceIdentifier> const m_pci_identifier;
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InterruptRange m_interrupt_range;
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};
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template<typename... Parameters>
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void dmesgln_pci(Device const& device, AK::CheckedFormatString<Parameters...>&& fmt, Parameters const&... parameters)
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{
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AK::StringBuilder builder;
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if (builder.try_append("{}: {}: "sv).is_error())
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return;
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if (builder.try_append(fmt.view()).is_error())
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return;
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AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::Yes, StringView, Address, Parameters...> variadic_format_params { device.device_name(), device.device_identifier().address(), parameters... };
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vdmesgln(builder.string_view(), variadic_format_params);
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}
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}
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