mirror of https://github.com/xemu-project/xemu.git
hw/misc: Implement STM32L4x5 EXTI
Although very similar to the STM32F4xx EXTI, STM32L4x5 EXTI generates more than 32 event/interrupt requests and thus uses more registers than STM32F4xx EXTI which generates 23 event/interrupt requests. Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr> Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20240109160658.311932-2-ines.varhol@telecom-paris.fr Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Inès Varhol
Peter Maydell
parent
8cf1da7291
commit
c9948fdd02
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@ -12,17 +12,16 @@ USART, I2C, SPI, CAN and USB OTG, as well as a variety of sensors.
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Supported devices
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Supported devices
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"""""""""""""""""
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"""""""""""""""""
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Currently, B-L475E-IOT01A machine's implementation is minimal,
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Currently B-L475E-IOT01A machine's only supports the following devices:
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it only supports the following device:
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- Cortex-M4F based STM32L4x5 SoC
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- Cortex-M4F based STM32L4x5 SoC
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- STM32L4x5 EXTI (Extended interrupts and events controller)
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Missing devices
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Missing devices
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"""""""""""""""
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"""""""""""""""
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The B-L475E-IOT01A does *not* support the following devices:
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The B-L475E-IOT01A does *not* support the following devices:
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- Extended interrupts and events controller (EXTI)
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- Reset and clock control (RCC)
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- Reset and clock control (RCC)
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- Serial ports (UART)
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- Serial ports (UART)
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- System configuration controller (SYSCFG)
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- System configuration controller (SYSCFG)
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@ -87,6 +87,9 @@ config STM32F4XX_SYSCFG
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config STM32F4XX_EXTI
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config STM32F4XX_EXTI
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bool
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bool
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config STM32L4X5_EXTI
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bool
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config MIPS_ITU
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config MIPS_ITU
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bool
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bool
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@ -110,6 +110,7 @@ system_ss.add(when: 'CONFIG_XLNX_VERSAL_TRNG', if_true: files(
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system_ss.add(when: 'CONFIG_STM32F2XX_SYSCFG', if_true: files('stm32f2xx_syscfg.c'))
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system_ss.add(when: 'CONFIG_STM32F2XX_SYSCFG', if_true: files('stm32f2xx_syscfg.c'))
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system_ss.add(when: 'CONFIG_STM32F4XX_SYSCFG', if_true: files('stm32f4xx_syscfg.c'))
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system_ss.add(when: 'CONFIG_STM32F4XX_SYSCFG', if_true: files('stm32f4xx_syscfg.c'))
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system_ss.add(when: 'CONFIG_STM32F4XX_EXTI', if_true: files('stm32f4xx_exti.c'))
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system_ss.add(when: 'CONFIG_STM32F4XX_EXTI', if_true: files('stm32f4xx_exti.c'))
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system_ss.add(when: 'CONFIG_STM32L4X5_EXTI', if_true: files('stm32l4x5_exti.c'))
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system_ss.add(when: 'CONFIG_MPS2_FPGAIO', if_true: files('mps2-fpgaio.c'))
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system_ss.add(when: 'CONFIG_MPS2_FPGAIO', if_true: files('mps2-fpgaio.c'))
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system_ss.add(when: 'CONFIG_MPS2_SCC', if_true: files('mps2-scc.c'))
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system_ss.add(when: 'CONFIG_MPS2_SCC', if_true: files('mps2-scc.c'))
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@ -0,0 +1,290 @@
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/*
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* STM32L4x5 EXTI (Extended interrupts and events controller)
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*
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* Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
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* Copyright (c) 2023 Samuel Tardieu <samuel.tardieu@telecom-paris.fr>
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* Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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* This work is based on the stm32f4xx_exti by Alistair Francis.
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* Original code is licensed under the MIT License:
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*
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* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
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*/
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/*
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* The reference used is the STMicroElectronics RM0351 Reference manual
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* for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
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* https://www.st.com/en/microcontrollers-microprocessors/stm32l4x5/documentation.html
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "trace.h"
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#include "hw/irq.h"
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#include "migration/vmstate.h"
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#include "hw/misc/stm32l4x5_exti.h"
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#define EXTI_IMR1 0x00
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#define EXTI_EMR1 0x04
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#define EXTI_RTSR1 0x08
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#define EXTI_FTSR1 0x0C
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#define EXTI_SWIER1 0x10
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#define EXTI_PR1 0x14
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#define EXTI_IMR2 0x20
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#define EXTI_EMR2 0x24
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#define EXTI_RTSR2 0x28
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#define EXTI_FTSR2 0x2C
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#define EXTI_SWIER2 0x30
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#define EXTI_PR2 0x34
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#define EXTI_NUM_GPIO_EVENT_IN_LINES 16
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#define EXTI_MAX_IRQ_PER_BANK 32
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#define EXTI_IRQS_BANK0 32
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#define EXTI_IRQS_BANK1 8
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static const unsigned irqs_per_bank[EXTI_NUM_REGISTER] = {
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EXTI_IRQS_BANK0,
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EXTI_IRQS_BANK1,
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};
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static const uint32_t exti_romask[EXTI_NUM_REGISTER] = {
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0xff820000, /* 0b11111111_10000010_00000000_00000000 */
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0x00000087, /* 0b00000000_00000000_00000000_10000111 */
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};
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static unsigned regbank_index_by_irq(unsigned irq)
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{
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return irq >= EXTI_MAX_IRQ_PER_BANK ? 1 : 0;
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}
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static unsigned regbank_index_by_addr(hwaddr addr)
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{
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return addr >= EXTI_IMR2 ? 1 : 0;
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}
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static unsigned valid_mask(unsigned bank)
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{
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return MAKE_64BIT_MASK(0, irqs_per_bank[bank]);
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}
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static unsigned configurable_mask(unsigned bank)
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{
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return valid_mask(bank) & ~exti_romask[bank];
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}
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static void stm32l4x5_exti_reset_hold(Object *obj)
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{
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Stm32l4x5ExtiState *s = STM32L4X5_EXTI(obj);
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for (unsigned bank = 0; bank < EXTI_NUM_REGISTER; bank++) {
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s->imr[bank] = exti_romask[bank];
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s->emr[bank] = 0x00000000;
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s->rtsr[bank] = 0x00000000;
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s->ftsr[bank] = 0x00000000;
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s->swier[bank] = 0x00000000;
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s->pr[bank] = 0x00000000;
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}
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}
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static void stm32l4x5_exti_set_irq(void *opaque, int irq, int level)
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{
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Stm32l4x5ExtiState *s = opaque;
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const unsigned bank = regbank_index_by_irq(irq);
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const int oirq = irq;
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trace_stm32l4x5_exti_set_irq(irq, level);
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/* Shift the value to enable access in x2 registers. */
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irq %= EXTI_MAX_IRQ_PER_BANK;
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/* If the interrupt is masked, pr won't be raised */
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if (!extract32(s->imr[bank], irq, 1)) {
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return;
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}
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if (((1 << irq) & s->rtsr[bank]) && level) {
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/* Rising Edge */
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s->pr[bank] |= 1 << irq;
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qemu_irq_pulse(s->irq[oirq]);
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} else if (((1 << irq) & s->ftsr[bank]) && !level) {
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/* Falling Edge */
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s->pr[bank] |= 1 << irq;
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qemu_irq_pulse(s->irq[oirq]);
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}
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/*
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* In the following situations :
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* - falling edge but rising trigger selected
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* - rising edge but falling trigger selected
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* - no trigger selected
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* No action is required
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*/
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}
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static uint64_t stm32l4x5_exti_read(void *opaque, hwaddr addr,
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unsigned int size)
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{
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Stm32l4x5ExtiState *s = opaque;
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uint32_t r = 0;
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const unsigned bank = regbank_index_by_addr(addr);
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switch (addr) {
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case EXTI_IMR1:
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case EXTI_IMR2:
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r = s->imr[bank];
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break;
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case EXTI_EMR1:
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case EXTI_EMR2:
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r = s->emr[bank];
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break;
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case EXTI_RTSR1:
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case EXTI_RTSR2:
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r = s->rtsr[bank];
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break;
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case EXTI_FTSR1:
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case EXTI_FTSR2:
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r = s->ftsr[bank];
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break;
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case EXTI_SWIER1:
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case EXTI_SWIER2:
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r = s->swier[bank];
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break;
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case EXTI_PR1:
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case EXTI_PR2:
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r = s->pr[bank];
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break;
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default:
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qemu_log_mask(LOG_GUEST_ERROR,
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"STM32L4X5_exti_read: Bad offset 0x%" HWADDR_PRIx "\n",
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addr);
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break;
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}
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trace_stm32l4x5_exti_read(addr, r);
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return r;
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}
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static void stm32l4x5_exti_write(void *opaque, hwaddr addr,
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uint64_t val64, unsigned int size)
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{
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Stm32l4x5ExtiState *s = opaque;
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const unsigned bank = regbank_index_by_addr(addr);
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trace_stm32l4x5_exti_write(addr, val64);
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switch (addr) {
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case EXTI_IMR1:
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case EXTI_IMR2:
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s->imr[bank] = val64 & valid_mask(bank);
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return;
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case EXTI_EMR1:
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case EXTI_EMR2:
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s->emr[bank] = val64 & valid_mask(bank);
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return;
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case EXTI_RTSR1:
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case EXTI_RTSR2:
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s->rtsr[bank] = val64 & configurable_mask(bank);
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return;
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case EXTI_FTSR1:
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case EXTI_FTSR2:
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s->ftsr[bank] = val64 & configurable_mask(bank);
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return;
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case EXTI_SWIER1:
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case EXTI_SWIER2: {
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const uint32_t set = val64 & configurable_mask(bank);
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const uint32_t pend = set & ~s->swier[bank] & s->imr[bank] &
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~s->pr[bank];
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s->swier[bank] = set;
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s->pr[bank] |= pend;
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for (unsigned i = 0; i < irqs_per_bank[bank]; i++) {
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if (extract32(pend, i, 1)) {
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qemu_irq_pulse(s->irq[i + 32 * bank]);
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}
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}
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return;
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}
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case EXTI_PR1:
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case EXTI_PR2: {
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const uint32_t cleared = s->pr[bank] & val64 & configurable_mask(bank);
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/* This bit is cleared by writing a 1 to it */
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s->pr[bank] &= ~cleared;
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/* Software triggered interrupts are cleared as well */
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s->swier[bank] &= ~cleared;
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return;
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}
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default:
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qemu_log_mask(LOG_GUEST_ERROR,
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"STM32L4X5_exti_write: Bad offset 0x%" HWADDR_PRIx "\n",
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addr);
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}
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}
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static const MemoryRegionOps stm32l4x5_exti_ops = {
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.read = stm32l4x5_exti_read,
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.write = stm32l4x5_exti_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.impl.min_access_size = 4,
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.impl.max_access_size = 4,
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.impl.unaligned = false,
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.valid.min_access_size = 4,
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.valid.max_access_size = 4,
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.valid.unaligned = false,
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};
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static void stm32l4x5_exti_init(Object *obj)
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{
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Stm32l4x5ExtiState *s = STM32L4X5_EXTI(obj);
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for (size_t i = 0; i < EXTI_NUM_INTERRUPT_OUT_LINES; i++) {
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sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq[i]);
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}
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memory_region_init_io(&s->mmio, obj, &stm32l4x5_exti_ops, s,
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TYPE_STM32L4X5_EXTI, 0x400);
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sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
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qdev_init_gpio_in(DEVICE(obj), stm32l4x5_exti_set_irq,
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EXTI_NUM_GPIO_EVENT_IN_LINES);
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}
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static const VMStateDescription vmstate_stm32l4x5_exti = {
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.name = TYPE_STM32L4X5_EXTI,
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32_ARRAY(imr, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_UINT32_ARRAY(emr, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_UINT32_ARRAY(rtsr, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_UINT32_ARRAY(ftsr, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_UINT32_ARRAY(swier, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_UINT32_ARRAY(pr, Stm32l4x5ExtiState, EXTI_NUM_REGISTER),
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VMSTATE_END_OF_LIST()
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}
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};
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static void stm32l4x5_exti_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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ResettableClass *rc = RESETTABLE_CLASS(klass);
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dc->vmsd = &vmstate_stm32l4x5_exti;
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rc->phases.hold = stm32l4x5_exti_reset_hold;
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}
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static const TypeInfo stm32l4x5_exti_types[] = {
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{
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.name = TYPE_STM32L4X5_EXTI,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(Stm32l4x5ExtiState),
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.instance_init = stm32l4x5_exti_init,
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.class_init = stm32l4x5_exti_class_init,
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}
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};
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DEFINE_TYPES(stm32l4x5_exti_types)
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@ -163,6 +163,11 @@ stm32f4xx_exti_set_irq(int irq, int level) "Set EXTI: %d to %d"
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||||||
stm32f4xx_exti_read(uint64_t addr) "reg read: addr: 0x%" PRIx64 " "
|
stm32f4xx_exti_read(uint64_t addr) "reg read: addr: 0x%" PRIx64 " "
|
||||||
stm32f4xx_exti_write(uint64_t addr, uint64_t data) "reg write: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
|
stm32f4xx_exti_write(uint64_t addr, uint64_t data) "reg write: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
|
||||||
|
|
||||||
|
# stm32l4x5_exti.c
|
||||||
|
stm32l4x5_exti_set_irq(int irq, int level) "Set EXTI: %d to %d"
|
||||||
|
stm32l4x5_exti_read(uint64_t addr, uint64_t data) "reg read: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
|
||||||
|
stm32l4x5_exti_write(uint64_t addr, uint64_t data) "reg write: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
|
||||||
|
|
||||||
# tz-mpc.c
|
# tz-mpc.c
|
||||||
tz_mpc_reg_read(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs read: offset 0x%x data 0x%" PRIx64 " size %u"
|
tz_mpc_reg_read(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs read: offset 0x%x data 0x%" PRIx64 " size %u"
|
||||||
tz_mpc_reg_write(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs write: offset 0x%x data 0x%" PRIx64 " size %u"
|
tz_mpc_reg_write(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs write: offset 0x%x data 0x%" PRIx64 " size %u"
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,51 @@
|
||||||
|
/*
|
||||||
|
* STM32L4x5 EXTI (Extended interrupts and events controller)
|
||||||
|
*
|
||||||
|
* Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
|
||||||
|
* Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
|
||||||
|
*
|
||||||
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
||||||
|
*
|
||||||
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
||||||
|
* See the COPYING file in the top-level directory.
|
||||||
|
*
|
||||||
|
* This work is based on the stm32f4xx_exti by Alistair Francis.
|
||||||
|
* Original code is licensed under the MIT License:
|
||||||
|
*
|
||||||
|
* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The reference used is the STMicroElectronics RM0351 Reference manual
|
||||||
|
* for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
|
||||||
|
* https://www.st.com/en/microcontrollers-microprocessors/stm32l4x5/documentation.html
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef HW_STM32L4X5_EXTI_H
|
||||||
|
#define HW_STM32L4X5_EXTI_H
|
||||||
|
|
||||||
|
#include "hw/sysbus.h"
|
||||||
|
#include "qom/object.h"
|
||||||
|
|
||||||
|
#define TYPE_STM32L4X5_EXTI "stm32l4x5-exti"
|
||||||
|
OBJECT_DECLARE_SIMPLE_TYPE(Stm32l4x5ExtiState, STM32L4X5_EXTI)
|
||||||
|
|
||||||
|
#define EXTI_NUM_INTERRUPT_OUT_LINES 40
|
||||||
|
#define EXTI_NUM_REGISTER 2
|
||||||
|
|
||||||
|
struct Stm32l4x5ExtiState {
|
||||||
|
SysBusDevice parent_obj;
|
||||||
|
|
||||||
|
MemoryRegion mmio;
|
||||||
|
|
||||||
|
uint32_t imr[EXTI_NUM_REGISTER];
|
||||||
|
uint32_t emr[EXTI_NUM_REGISTER];
|
||||||
|
uint32_t rtsr[EXTI_NUM_REGISTER];
|
||||||
|
uint32_t ftsr[EXTI_NUM_REGISTER];
|
||||||
|
uint32_t swier[EXTI_NUM_REGISTER];
|
||||||
|
uint32_t pr[EXTI_NUM_REGISTER];
|
||||||
|
|
||||||
|
qemu_irq irq[EXTI_NUM_INTERRUPT_OUT_LINES];
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue