[Skiboot] [PATCH 1/1] vas: export chip-id to vas platform device
Sukadev Bhattiprolu
sukadev at linux.vnet.ibm.com
Wed Aug 30 10:51:33 AEST 2017
Michael Neuling [mikey at neuling.org] wrote:
> On Tue, 2017-08-29 at 08:33 -0700, Sukadev Bhattiprolu wrote:
> > This is needed so VAS in the kernel can perform cpu to vas id mapping.
>
> cpu to vas, or chip to vas?
Yes, there is cpu_to_chip() mapping in the kernel which I am thinking of
using to map a procees's cpu to chip to vas id. So, yes, for this patch,
we should say chip to vas id.
>
> Mikey
>
> >
> > Signed-off-by: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>
> > ---
> > hw/vas.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/hw/vas.c b/hw/vas.c
> > index b744b51..7ee668d 100644
> > --- a/hw/vas.c
> > +++ b/hw/vas.c
> > @@ -389,6 +389,7 @@ static struct vas *alloc_vas(uint32_t chip_id, uint32_t
> > vas_id, uint64_t base)
> >
> > static void create_mm_dt_node(struct proc_chip *chip)
> > {
> > + int gcid;
> > struct dt_node *dn;
> > struct vas *vas;
> > uint64_t hvwc_start, hvwc_len;
> > @@ -397,6 +398,7 @@ static void create_mm_dt_node(struct proc_chip *chip)
> > uint64_t pbf_start, pbf_nbits;
> >
> > vas = chip->vas;
> > + gcid = chip->id;
> > get_hvwc_mmio_bar(chip->id, &hvwc_start, &hvwc_len);
> > get_uwc_mmio_bar(chip->id, &uwc_start, &uwc_len);
> > get_paste_bar(chip->id, &pbar_start, &pbar_len);
> > @@ -413,6 +415,7 @@ static void create_mm_dt_node(struct proc_chip *chip)
> > pbf_start, pbf_nbits);
> >
> > dt_add_property(dn, "ibm,vas-id", &vas->vas_id, sizeof(vas->vas_id));
> > + dt_add_property(dn, "ibm,chip-id", &gcid, sizeof(gcid));
> > }
> >
> > /*
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