| 1 | /* |
| 2 | * STM32L4x5 EXTI (Extended interrupts and events controller) |
| 3 | * |
| 4 | * Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr> |
| 5 | * Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr> |
| 6 | * |
| 7 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 10 | * See the COPYING file in the top-level directory. |
| 11 | * |
| 12 | * This work is based on the stm32f4xx_exti by Alistair Francis. |
| 13 | * Original code is licensed under the MIT License: |
| 14 | * |
| 15 | * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me> |
| 16 | */ |
| 17 | |
| 18 | /* |
| 19 | * The reference used is the STMicroElectronics RM0351 Reference manual |
| 20 | * for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs. |
| 21 | * https://www.st.com/en/microcontrollers-microprocessors/stm32l4x5/documentation.html |
| 22 | */ |
| 23 | |
| 24 | #ifndef HW_STM32L4X5_EXTI_H |
| 25 | #define HW_STM32L4X5_EXTI_H |
| 26 | |
| 27 | #include "hw/core/sysbus.h" |
| 28 | #include "qom/object.h" |
| 29 | |
| 30 | #define TYPE_STM32L4X5_EXTI "stm32l4x5-exti" |
| 31 | OBJECT_DECLARE_SIMPLE_TYPE(Stm32l4x5ExtiState, STM32L4X5_EXTI) |
| 32 | |
| 33 | #define EXTI_NUM_LINES 40 |
| 34 | #define EXTI_NUM_REGISTER 2 |
| 35 | |
| 36 | struct Stm32l4x5ExtiState { |
| 37 | SysBusDevice parent_obj; |
| 38 | |
| 39 | MemoryRegion mmio; |
| 40 | |
| 41 | uint32_t imr[EXTI_NUM_REGISTER]; |
| 42 | uint32_t emr[EXTI_NUM_REGISTER]; |
| 43 | uint32_t rtsr[EXTI_NUM_REGISTER]; |
| 44 | uint32_t ftsr[EXTI_NUM_REGISTER]; |
| 45 | uint32_t swier[EXTI_NUM_REGISTER]; |
| 46 | uint32_t pr[EXTI_NUM_REGISTER]; |
| 47 | |
| 48 | /* used for edge detection */ |
| 49 | uint32_t irq_levels[EXTI_NUM_REGISTER]; |
| 50 | qemu_irq irq[EXTI_NUM_LINES]; |
| 51 | }; |
| 52 | |
| 53 | #endif |