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cooper
2019 Jun 09
1
Questions on syncing mechanisms
...Tegra X1 emulation and I already have: Semaphores, Syncpoints and
Queries to some extent. I'm missing the barriers (GPU waits for CPU):
I got this from RE:
Barrier mode has priority (from highest to lowest): 1) 0x08 sets needsWfi=0
-> highest priority, does puller refcnt + split(0,0) + 0x100 NoOperation +
rest of cmds + split(1,1) 2) 0x01 sets needsWfi=0 -> uses 0x0110
Serialize/"WaitForIdle" 3) 0x02 sets needsWfi=1 -> uses 0xDE0 (??) 4) 0x04
sets needsWfi=1 -> uses 0xF7C (??) <-- tile related? Used by
nvnQueue_ctrlTiledDownsample 5) nothing; sets needsWfi=0
Do you guys...