Re: [Qemu-devel] [PATCHv2 05/12] cuda: rename frequency property to tb_frequency

[David Gibson <david@gibson.dropbear.id.au>]

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On Sun, Feb 11, 2018 at 09:32:14AM +1100, David Gibson wrote:
> On Fri, Feb 09, 2018 at 06:51:35PM +0000, Mark Cave-Ayland wrote:
> > This allows us to more easily differentiate between the timebase frequency used
> > to calibrate the MacOS timers and the actual frequency of the hardware clock as
> > indicated by CUDA_TIMER_FREQ.
> > 
> > Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> > Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> 
> Applied, thanks.

Actually, this patch doesn't compile, because you've changed
ti->frequency in a couple of places where you should only be changing
s->frequency.  I've fixed it up in my tree.

> 
> > ---
> >  hw/misc/macio/cuda.c  | 10 +++++-----
> >  hw/misc/macio/macio.c |  2 +-
> >  hw/ppc/mac.h          |  2 +-
> >  3 files changed, 7 insertions(+), 7 deletions(-)
> > 
> > diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
> > index a88535fa66..232b7f61aa 100644
> > --- a/hw/misc/macio/cuda.c
> > +++ b/hw/misc/macio/cuda.c
> > @@ -158,8 +158,8 @@ static unsigned int get_counter(CUDAState *s, CUDATimer *ti)
> >      uint64_t current_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
> >  
> >      /* Reverse of the tb calculation algorithm that Mac OS X uses on bootup. */
> > -    tb_diff = get_tb(current_time, ti->frequency) - ti->load_time;
> > -    d = (tb_diff * 0xBF401675E5DULL) / (ti->frequency << 24);
> > +    tb_diff = get_tb(current_time, ti->tb_frequency) - ti->load_time;
> > +    d = (tb_diff * 0xBF401675E5DULL) / (ti->tb_frequency << 24);
> >  
> >      if (ti->index == 0) {
> >          /* the timer goes down from latch to -1 (period of latch + 2) */
> > @@ -179,7 +179,7 @@ static void set_counter(CUDAState *s, CUDATimer *ti, unsigned int val)
> >  {
> >      CUDA_DPRINTF("T%d.counter=%d\n", 1 + ti->index, val);
> >      ti->load_time = get_tb(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
> > -                           s->frequency);
> > +                           s->tb_frequency);
> >      ti->counter_value = val;
> >      cuda_timer_update(s, ti, ti->load_time);
> >  }
> > @@ -878,7 +878,7 @@ static void cuda_realizefn(DeviceState *dev, Error **errp)
> >      struct tm tm;
> >  
> >      s->timers[0].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_timer1, s);
> > -    s->timers[0].frequency = s->frequency;
> > +    s->timers[0].frequency = s->tb_frequency;
> >      s->timers[1].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_timer2, s);
> >      s->timers[1].frequency = (SCALE_US * 6000) / 4700;
> >  
> > @@ -909,7 +909,7 @@ static void cuda_initfn(Object *obj)
> >  }
> >  
> >  static Property cuda_properties[] = {
> > -    DEFINE_PROP_UINT64("frequency", CUDAState, frequency, 0),
> > +    DEFINE_PROP_UINT64("timebase-frequency", CUDAState, tb_frequency, 0),
> >      DEFINE_PROP_END_OF_LIST()
> >  };
> >  
> > diff --git a/hw/misc/macio/macio.c b/hw/misc/macio/macio.c
> > index 44f91d1e7f..a639b09e00 100644
> > --- a/hw/misc/macio/macio.c
> > +++ b/hw/misc/macio/macio.c
> > @@ -451,7 +451,7 @@ void macio_init(PCIDevice *d,
> >      macio_state->escc_mem = escc_mem;
> >      /* Note: this code is strongly inspirated from the corresponding code
> >         in PearPC */
> > -    qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "frequency",
> > +    qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "timebase-frequency",
> >                           macio_state->frequency);
> >  
> >      qdev_init_nofail(DEVICE(d));
> > diff --git a/hw/ppc/mac.h b/hw/ppc/mac.h
> > index b501af1653..fa78115c95 100644
> > --- a/hw/ppc/mac.h
> > +++ b/hw/ppc/mac.h
> > @@ -99,7 +99,7 @@ typedef struct CUDAState {
> >      CUDATimer timers[2];
> >  
> >      uint32_t tick_offset;
> > -    uint64_t frequency;
> > +    uint64_t tb_frequency;
> >  
> >      uint8_t last_b;
> >      uint8_t last_acr;
> 



-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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