Re: [Intel-gfx] [PATCH v5 2/2] drm/i915: Implement WaProgramMgsrForL3BankSpecificMmioReads

2018-03-28 Thread Zhang, Yunwei
On 3/28/2018 2:39 AM, Tvrtko Ursulin wrote: On 27/03/2018 23:14, Yunwei Zhang wrote: L3Bank could be fused off in hardware for debug purpose, and it is possible that subslice is enabled while its corresponding L3Bank pairs are disabled. In such case, if MCR packet control register(0xFDC)

Re: [Intel-gfx] [PATCH v5 2/2] drm/i915: Implement WaProgramMgsrForL3BankSpecificMmioReads

2018-03-28 Thread Tvrtko Ursulin
On 28/03/2018 10:39, Tvrtko Ursulin wrote: On 27/03/2018 23:14, Yunwei Zhang wrote: L3Bank could be fused off in hardware for debug purpose, and it is possible that subslice is enabled while its corresponding L3Bank pairs are disabled. In such case, if MCR packet control register(0xFDC) is

Re: [Intel-gfx] [PATCH v5 2/2] drm/i915: Implement WaProgramMgsrForL3BankSpecificMmioReads

2018-03-28 Thread Tvrtko Ursulin
On 27/03/2018 23:14, Yunwei Zhang wrote: L3Bank could be fused off in hardware for debug purpose, and it is possible that subslice is enabled while its corresponding L3Bank pairs are disabled. In such case, if MCR packet control register(0xFDC) is programed to point to a disabled bank pair, a

[Intel-gfx] [PATCH v5 2/2] drm/i915: Implement WaProgramMgsrForL3BankSpecificMmioReads

2018-03-27 Thread Yunwei Zhang
L3Bank could be fused off in hardware for debug purpose, and it is possible that subslice is enabled while its corresponding L3Bank pairs are disabled. In such case, if MCR packet control register(0xFDC) is programed to point to a disabled bank pair, a MMIO read into L3Bank range will return 0