Re: [Intel-gfx] [PATCH v4 1/3] drm/i915/cnl: Implement WaProgramMgsrForCorrectSliceSpecificMmioReads

2018-05-18 Thread Oscar Mateo Lozano
On 5/18/2018 3:39 PM, Yunwei Zhang wrote: WaProgramMgsrForCorrectSliceSpecificMmioReads dictate that before any MMIO read into Slice/Subslice specific registers, MCR packet control register(0xFDC) needs to be programmed to point to any enabled slice/subslice pair. Otherwise, incorrect value wil

[Intel-gfx] [PATCH v4 1/3] drm/i915/cnl: Implement WaProgramMgsrForCorrectSliceSpecificMmioReads

2018-05-18 Thread Yunwei Zhang
WaProgramMgsrForCorrectSliceSpecificMmioReads dictate that before any MMIO read into Slice/Subslice specific registers, MCR packet control register(0xFDC) needs to be programmed to point to any enabled slice/subslice pair. Otherwise, incorrect value will be returned. However, that means each subse