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hw/misc: Add the STM32F4xx EXTI device

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Signed-off-by: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: ef941d59fd8658589d34ed432e1d6dfdcf7fb1d0.1576658572.git.alistair@alistair23.me
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alistair Francis 2020-01-17 14:09:29 +00:00 committed by Peter Maydell
parent 870c034da0
commit e64d8c83f9
6 changed files with 258 additions and 0 deletions
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1
hw/arm/Kconfig
View File

@ -315,6 +315,7 @@ config STM32F405_SOC
bool
select ARM_V7M
select STM32F4XX_SYSCFG
select STM32F4XX_EXTI
config XLNX_ZYNQMP_ARM
bool

3
hw/misc/Kconfig
View File

@ -85,6 +85,9 @@ config STM32F2XX_SYSCFG
config STM32F4XX_SYSCFG
bool
config STM32F4XX_EXTI
bool
config MIPS_ITU
bool

1
hw/misc/Makefile.objs
View File

@ -59,6 +59,7 @@ common-obj-$(CONFIG_ZYNQ) += zynq_slcr.o
common-obj-$(CONFIG_ZYNQ) += zynq-xadc.o
common-obj-$(CONFIG_STM32F2XX_SYSCFG) += stm32f2xx_syscfg.o
common-obj-$(CONFIG_STM32F4XX_SYSCFG) += stm32f4xx_syscfg.o
common-obj-$(CONFIG_STM32F4XX_EXTI) += stm32f4xx_exti.o
obj-$(CONFIG_MIPS_CPS) += mips_cmgcr.o
obj-$(CONFIG_MIPS_CPS) += mips_cpc.o
obj-$(CONFIG_MIPS_ITU) += mips_itu.o

188
hw/misc/stm32f4xx_exti.c Normal file
View File

@ -0,0 +1,188 @@
/*
* STM32F4XX EXTI
*
* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "trace.h"
#include "hw/irq.h"
#include "migration/vmstate.h"
#include "hw/misc/stm32f4xx_exti.h"
static void stm32f4xx_exti_reset(DeviceState *dev)
{
STM32F4xxExtiState *s = STM32F4XX_EXTI(dev);
s->exti_imr = 0x00000000;
s->exti_emr = 0x00000000;
s->exti_rtsr = 0x00000000;
s->exti_ftsr = 0x00000000;
s->exti_swier = 0x00000000;
s->exti_pr = 0x00000000;
}
static void stm32f4xx_exti_set_irq(void *opaque, int irq, int level)
{
STM32F4xxExtiState *s = opaque;
trace_stm32f4xx_exti_set_irq(irq, level);
if (((1 << irq) & s->exti_rtsr) && level) {
/* Rising Edge */
s->exti_pr |= 1 << irq;
}
if (((1 << irq) & s->exti_ftsr) && !level) {
/* Falling Edge */
s->exti_pr |= 1 << irq;
}
if (!((1 << irq) & s->exti_imr)) {
/* Interrupt is masked */
return;
}
qemu_irq_pulse(s->irq[irq]);
}
static uint64_t stm32f4xx_exti_read(void *opaque, hwaddr addr,
unsigned int size)
{
STM32F4xxExtiState *s = opaque;
trace_stm32f4xx_exti_read(addr);
switch (addr) {
case EXTI_IMR:
return s->exti_imr;
case EXTI_EMR:
return s->exti_emr;
case EXTI_RTSR:
return s->exti_rtsr;
case EXTI_FTSR:
return s->exti_ftsr;
case EXTI_SWIER:
return s->exti_swier;
case EXTI_PR:
return s->exti_pr;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"STM32F4XX_exti_read: Bad offset %x\n", (int)addr);
return 0;
}
return 0;
}
static void stm32f4xx_exti_write(void *opaque, hwaddr addr,
uint64_t val64, unsigned int size)
{
STM32F4xxExtiState *s = opaque;
uint32_t value = (uint32_t) val64;
trace_stm32f4xx_exti_write(addr, value);
switch (addr) {
case EXTI_IMR:
s->exti_imr = value;
return;
case EXTI_EMR:
s->exti_emr = value;
return;
case EXTI_RTSR:
s->exti_rtsr = value;
return;
case EXTI_FTSR:
s->exti_ftsr = value;
return;
case EXTI_SWIER:
s->exti_swier = value;
return;
case EXTI_PR:
/* This bit is cleared by writing a 1 to it */
s->exti_pr &= ~value;
return;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"STM32F4XX_exti_write: Bad offset %x\n", (int)addr);
}
}
static const MemoryRegionOps stm32f4xx_exti_ops = {
.read = stm32f4xx_exti_read,
.write = stm32f4xx_exti_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void stm32f4xx_exti_init(Object *obj)
{
STM32F4xxExtiState *s = STM32F4XX_EXTI(obj);
int i;
for (i = 0; i < NUM_INTERRUPT_OUT_LINES; i++) {
sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq[i]);
}
memory_region_init_io(&s->mmio, obj, &stm32f4xx_exti_ops, s,
TYPE_STM32F4XX_EXTI, 0x400);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
qdev_init_gpio_in(DEVICE(obj), stm32f4xx_exti_set_irq,
NUM_GPIO_EVENT_IN_LINES);
}
static const VMStateDescription vmstate_stm32f4xx_exti = {
.name = TYPE_STM32F4XX_EXTI,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(exti_imr, STM32F4xxExtiState),
VMSTATE_UINT32(exti_emr, STM32F4xxExtiState),
VMSTATE_UINT32(exti_rtsr, STM32F4xxExtiState),
VMSTATE_UINT32(exti_ftsr, STM32F4xxExtiState),
VMSTATE_UINT32(exti_swier, STM32F4xxExtiState),
VMSTATE_UINT32(exti_pr, STM32F4xxExtiState),
VMSTATE_END_OF_LIST()
}
};
static void stm32f4xx_exti_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = stm32f4xx_exti_reset;
dc->vmsd = &vmstate_stm32f4xx_exti;
}
static const TypeInfo stm32f4xx_exti_info = {
.name = TYPE_STM32F4XX_EXTI,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(STM32F4xxExtiState),
.instance_init = stm32f4xx_exti_init,
.class_init = stm32f4xx_exti_class_init,
};
static void stm32f4xx_exti_register_types(void)
{
type_register_static(&stm32f4xx_exti_info);
}
type_init(stm32f4xx_exti_register_types)

5
hw/misc/trace-events
View File

@ -90,6 +90,11 @@ stm32f4xx_pulse_exti(int irq) "Pulse EXTI: %d"
stm32f4xx_syscfg_read(uint64_t addr) "reg read: addr: 0x%" PRIx64 " "
stm32f4xx_syscfg_write(uint64_t addr, uint64_t data) "reg write: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
# stm32f4xx_exti
stm32f4xx_exti_set_irq(int irq, int leve) "Set EXTI: %d to %d"
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 ""
# 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_write(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs write: offset 0x%x data 0x%" PRIx64 " size %u"

60
include/hw/misc/stm32f4xx_exti.h Normal file
View File

@ -0,0 +1,60 @@
/*
* STM32F4XX EXTI
*
* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef HW_STM_EXTI_H
#define HW_STM_EXTI_H
#include "hw/sysbus.h"
#include "hw/hw.h"
#define EXTI_IMR 0x00
#define EXTI_EMR 0x04
#define EXTI_RTSR 0x08
#define EXTI_FTSR 0x0C
#define EXTI_SWIER 0x10
#define EXTI_PR 0x14
#define TYPE_STM32F4XX_EXTI "stm32f4xx-exti"
#define STM32F4XX_EXTI(obj) \
OBJECT_CHECK(STM32F4xxExtiState, (obj), TYPE_STM32F4XX_EXTI)
#define NUM_GPIO_EVENT_IN_LINES 16
#define NUM_INTERRUPT_OUT_LINES 16
typedef struct {
SysBusDevice parent_obj;
MemoryRegion mmio;
uint32_t exti_imr;
uint32_t exti_emr;
uint32_t exti_rtsr;
uint32_t exti_ftsr;
uint32_t exti_swier;
uint32_t exti_pr;
qemu_irq irq[NUM_INTERRUPT_OUT_LINES];
} STM32F4xxExtiState;
#endif