Re: [Qemu-devel] [PATCH] dma: rc4030: limit interval timer reload value

[Paolo Bonzini <pbonzini@redhat.com>]

On 16/11/2016 07:29, P J P wrote:
> +-- On Wed, 16 Nov 2016, Hervé Poussineau wrote --+
> | I don't have any datasheet for this device either, so I tested with real 
> | programs. Those initialize itr field to either 0 or to 9, so your mask 
> | doesn't change anything.
> | 
> | Tested-by: Hervé Poussineau <hpoussin@reactos.org>
> 
>   Thank you so much. To confirm, do we need to update the mask to maybe 
> 0x000F?

It's not needed if you change it as suggested elsewhere in the thread.

    timer_mod(s->periodic_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
              NANOSECONDS_PER_SECOND / 1000 * (s->itr + 1));

Thanks,

Paolo

> | > > >      case 0x0228:
> | > > > -        s->itr = val;
> | > > > +        s->itr = val & 0x01FF;
> | > > >          qemu_irq_lower(s->timer_irq);