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Kernel: Implement helpers to manipulate MSI(x) data structures

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MSIx table entry is used to program interrupt vectors and it is
architecture specific. Add helper functions declaration in
Arch/PCIMSI.h. The definition of the function is placed in the
respective arch specific code.
This commit is contained in:
Pankaj Raghav 2023-05-05 14:37:26 +02:00 • committed by Jelle Raaijmakers
parent bf7ac06d7b
commit f0b6eb6932
4 changed files with 115 additions and 0 deletions
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42
Kernel/Arch/PCIMSI.h Normal file
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/*
* Copyright (c) 2023, Pankaj R <dev@pankajraghav.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
namespace Kernel {
#if ARCH(X86_64)
u64 msi_address_register(u8 destination_id, bool redirection_hint, bool destination_mode);
u32 msi_data_register(u8 vector, bool level_trigger, bool assert);
u32 msix_vector_control_register(u32 vector_control, bool mask);
void msi_signal_eoi();
#elif ARCH(AARCH64)
[[maybe_unused]] static u64 msi_address_register([[maybe_unused]] u8 destination_id, [[maybe_unused]] bool redirection_hint, [[maybe_unused]] bool destination_mode)
{
TODO_AARCH64();
return 0;
}
[[maybe_unused]] static u32 msi_data_register([[maybe_unused]] u8 vector, [[maybe_unused]] bool level_trigger, [[maybe_unused]] bool assert)
{
TODO_AARCH64();
return 0;
}
[[maybe_unused]] static u32 msix_vector_control_register([[maybe_unused]] u32 vector_control, [[maybe_unused]] bool mask)
{
TODO_AARCH64();
return 0;
}
[[maybe_unused]] static void msi_signal_eoi()
{
TODO_AARCH64();
return;
}
#endif
}