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https://github.com/Atmosphere-NX/Atmosphere.git
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69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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#include "secmon_interrupt_handler.hpp"
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#include "secmon_error.hpp"
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namespace ams::secmon {
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namespace {
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constexpr inline int InterruptHandlersMax = 4;
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constinit InterruptHandler g_handlers[InterruptHandlersMax] = {};
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constinit int g_interrupt_ids[InterruptHandlersMax] = {};
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constinit u8 g_interrupt_core_masks[InterruptHandlersMax] = {};
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}
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void SetInterruptHandler(int interrupt_id, u8 core_mask, InterruptHandler handler) {
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for (int i = 0; i < InterruptHandlersMax; ++i) {
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if (g_interrupt_ids[i] == 0) {
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g_interrupt_ids[i] = interrupt_id;
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g_handlers[i] = handler;
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g_interrupt_core_masks[i] = core_mask;
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return;
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}
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}
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AMS_ABORT("Failed to register interrupt handler");
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}
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void HandleInterrupt() {
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/* Get the interrupt id. */
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const int interrupt_id = gic::GetInterruptRequestId();
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if (interrupt_id >= gic::InterruptCount) {
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/* Invalid interrupt number, just return. */
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return;
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}
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/* Check each handler. */
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for (int i = 0; i < InterruptHandlersMax; ++i) {
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if (g_interrupt_ids[i] == interrupt_id) {
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/* Validate that we can invoke the handler. */
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AMS_ABORT_UNLESS((g_interrupt_core_masks[i] & (1u << hw::GetCurrentCoreId())) != 0);
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/* Invoke the handler. */
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g_handlers[i]();
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gic::SetEndOfInterrupt(interrupt_id);
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return;
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}
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}
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AMS_ABORT("Failed to find interrupt handler.");
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}
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}
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