Hi Monk,
I honestly don't have the slightest idea why we are still accessing
CC_RB_BACKEND_DISABLE. Maybe it still contains some useful values?
Key point was that we needed to stop accessing it all the time to avoid
triggering problems.
Regards,
Christian.
Am 07.03.2018 um 13:11 schrieb Liu, Monk:
>
> Hi Christian
>
>
> I remember you and AlexD mentioned that a handful registers are
> deprecated for greenland (gfx9)
>
> e.g. CC_RB_BACKEND_DISABLE
>
>
> do you know why we still have this routine ?
>
> static u32 gfx_v9_0_get_rb_active_bitmap(struct amdgpu_device *adev)
> {
> Â Â Â Â u32 data, mask;
> Â Â Â Â data = RREG32_SOC15(GC, 0, mmCC_RB_BACKEND_DISABLE);
> Â Â Â Â data |= RREG32_SOC15(GC, 0, mmGC_USER_RB_BACKEND_DISABLE);
> Â Â Â Â data &= CC_RB_BACKEND_DISABLE__BACKEND_DISABLE_MASK;
> Â Â Â Â data >>= GC_USER_RB_BACKEND_DISABLE__BACKEND_DISABLE__SHIFT;
> Â Â Â Â mask =
> amdgpu_gfx_create_bitmask(adev->gfx.config.max_backends_per_se /
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â adev->gfx.config.max_sh_per_se);
> return (~data) & mask;
> }
>
> see that it still read CC_RB_BACKEND_DISABLE
>
>
> thanks
>
>
> /Monk
>
>
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