On Mon, May 25, 2020 at 4:10 AM Philippe Mathieu-Daudé <f4...@amsat.org> wrote:
>
> 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".
>
> Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com>
Alistair
> ---
> v2: Commit staged changes... (MemoryRegionOps::impl)
> ---
> hw/adc/stm32f2xx_adc.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/hw/adc/stm32f2xx_adc.c b/hw/adc/stm32f2xx_adc.c
> index 4f9d485ecf..01a0b14e69 100644
> --- a/hw/adc/stm32f2xx_adc.c
> +++ b/hw/adc/stm32f2xx_adc.c
> @@ -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);
> }
>
> --
> 2.21.3
>
>
