On Fri, 2014-05-30 at 19:33 -0400, Alex Deucher wrote:
> On Fri, May 30, 2014 at 11:31 AM, Bruno Jiménez <brunoji...@gmail.com> wrote:
> > The data has been extracted from:
> > AMD Accelerated Parallel Processing OpenCL Programming Guide (rev 2.7)
> > Appendix D: Device Parameters
>
> You should add a query for the number of compute units to the
> RADEON_INFO ioctl and then just ask the kernel how many CUs/SIMDs the
> hw has. This will properly handle all boards (harvest, etc.) since we
> can read the actual number of CUs off the GPU.
>
> Alex
Hi,
At first I tried to do so (as for the maximum clock frequency), but I
couldn't find how to query that value, nor many docs about what I could
ask the kernel for.
I think I have found now the appropiate docs, and I will try again to
query the kernel later.
Sorry for any inconvenience.
Bruno
>
> > ---
> > src/gallium/drivers/radeon/r600_pipe_common.c | 90
> > +++++++++++++++++++++++++++
> > 1 file changed, 90 insertions(+)
> >
> > diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c
> > b/src/gallium/drivers/radeon/r600_pipe_common.c
> > index 70c4d1a..c4abacd 100644
> > --- a/src/gallium/drivers/radeon/r600_pipe_common.c
> > +++ b/src/gallium/drivers/radeon/r600_pipe_common.c
> > @@ -422,6 +422,89 @@ const char *r600_get_llvm_processor_name(enum
> > radeon_family family)
> > }
> > }
> >
> > +static uint32_t radeon_max_compute_units(enum radeon_family family)
> > +{
> > + switch (family) {
> > + case CHIP_CEDAR:
> > + return 2;
> > +
> > + /* Redwood PRO2: 4
> > + * Redwood PRO: 5
> > + * Redwood XT: 5 */
> > + case CHIP_REDWOOD:
> > + return 4;
> > +
> > + /* Juniper LE: 9
> > + * Juniper XT: 10 */
> > + case CHIP_JUNIPER:
> > + return 9;
> > +
> > + /* Cypress LE: 14
> > + * Cypress PRO: 18
> > + * Cypress XT: 20 */
> > + case CHIP_CYPRESS:
> > + return 14;
> > +
> > + case CHIP_HEMLOCK:
> > + return 40;
> > +
> > + /* XXX: is Zacate really equal to Ontario?
> > + * Zacate E-350: 2
> > + * Zacate E-240: 2
> > + * Ontario C-50: 2
> > + * Ontario C-30: 2 */
> > + case CHIP_PALM:
> > + return 2;
> > +
> > + /* Caicos: 2
> > + * Seymour LP: 2
> > + * Seymour PRO: 2
> > + * Seymour XT: 2
> > + * Seymour XTX: 2 */
> > + case CHIP_CAICOS:
> > + return 2;
> > +
> > + /* Turks PRO: 6
> > + * Turks XT: 6
> > + * Whistler LP: 6
> > + * Whistler PRO: 6
> > + * Whistler XT: 6 */
> > + case CHIP_TURKS:
> > + return 6;
> > +
> > + /* Barts LE: 10
> > + * Barts PRO: 12
> > + * Barts XT: 14
> > + * Blackcomb PRO: 12 */
> > + case CHIP_BARTS:
> > + return 10;
> > +
> > + /* Cayman PRO: 22
> > + * Cayman XT: 24
> > + * Cayman Gemini: 48 */
> > + case CHIP_CAYMAN:
> > + return 22;
> > +
> > + /* Verde PRO: 8
> > + * Verde XT: 10 */
> > + case CHIP_VERDE:
> > + return 8;
> > +
> > + /* Pitcairn PRO: 16
> > + * Pitcairn XT: 20 */
> > + case CHIP_PITCAIRN:
> > + return 16;
> > +
> > + /* Tahiti PRO: 28
> > + * Tahiti XT: 32 */
> > + case CHIP_TAHITI:
> > + return 28;
> > +
> > + default:
> > + return 1;
> > + }
> > +}
> > +
> > static int r600_get_compute_param(struct pipe_screen *screen,
> > enum pipe_compute_cap param,
> > void *ret)
> > @@ -519,6 +602,13 @@ static int r600_get_compute_param(struct pipe_screen
> > *screen,
> > }
> > return sizeof(uint32_t);
> >
> > + case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
> > + if (ret) {
> > + uint32_t *max_compute_units = ret;
> > + *max_compute_units =
> > radeon_max_compute_units(rscreen->family);
> > + }
> > + return sizeof(uint32_t);
> > +
> > default:
> > fprintf(stderr, "unknown PIPE_COMPUTE_CAP %d\n", param);
> > return 0;
> > --
> > 1.9.3
> >
> > _______________________________________________
> > mesa-dev mailing list
> > mesa-dev@lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
