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Atmosphere/thermosphere/src/irq.h

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/*
* Copyright (c) 2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "gicv2.h"
#include "spinlock.h"
#include "exceptions.h"
#include "utils.h"
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#define IRQ_PRIORITY_HOST 0
#define IRQ_PRIORITY_GUEST 1
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typedef struct IrqManager {
RecursiveSpinlock lock;
ArmGicV2 gic;
u8 numPriorityLevels;
u8 numCpuInterfaces;
u8 numSharedInterrupts;
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u8 numListRegisters;
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// Note: we don't store interrupt handlers since we will handle some SGI + uart interrupt(s)...
} IrqManager;
typedef enum ThermosphereSgi {
ThermosphereSgi_ExecuteFunction = 0,
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ThermosphereSgi_VgicUpdate = 1,
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ThermosphereSgi_Max = 2,
} ThermosphereSgi;
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extern IrqManager g_irqManager;
void initIrq(void);
void handleIrqException(ExceptionStackFrame *frame, bool isLowerEl, bool isA32);
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bool isGuestIrq(u16 id);
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static inline void generateSgiForAllOthers(ThermosphereSgi id)
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{
g_irqManager.gic.gicd->sgir = (1 << 24) | ((u32)id & 0xF);
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}
static inline void generateSgiForSelf(ThermosphereSgi id)
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{
g_irqManager.gic.gicd->sgir = (2 << 24) | ((u32)id & 0xF);
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}
static inline void generateSgiForList(ThermosphereSgi id, u32 list)
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{
g_irqManager.gic.gicd->sgir = (0 << 24) | (list << 16) | ((u32)id & 0xF);
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}
static inline void generateSgiForAll(ThermosphereSgi id)
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{
generateSgiForList(id, MASK(g_irqManager.numCpuInterfaces));
}