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hw/adc/stm32f2xx_adc: Correct memory region size and access size 

The ADC region size is 256B, split as:
 - [0x00 - 0x4f] defined
 - [0x50 - 0xff] reserved

All registers are 32-bit (thus when the datasheet mentions the
last defined register is 0x4c, it means its address range is
0x4c .. 0x4f.

This model implementation is also 32-bit. Set MemoryRegionOps
'impl' fields.

See:
  'RM0033 Reference manual Rev 8', Table 10.13.18 "ADC register map".

Reported-by: Seth Kintigh <skintigh@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200603055915.17678-1-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Philippe Mathieu-Daudé 2020-06-03 07:59:15 +02:00 committed by Peter Maydell
parent 43fa36c96c
commit d04bf49c9e
1 changed files with 3 additions and 1 deletions
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4
hw/adc/stm32f2xx_adc.c
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@ -246,6 +246,8 @@ static const MemoryRegionOps stm32f2xx_adc_ops = {
.read = stm32f2xx_adc_read,
.write = stm32f2xx_adc_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl.min_access_size = 4,
.impl.max_access_size = 4,
};
static const VMStateDescription vmstate_stm32f2xx_adc = {
@ -278,7 +280,7 @@ static void stm32f2xx_adc_init(Object *obj)
sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
memory_region_init_io(&s->mmio, obj, &stm32f2xx_adc_ops, s,
TYPE_STM32F2XX_ADC, 0xFF);
TYPE_STM32F2XX_ADC, 0x100);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
}