From: Alexey Sheplyakov
Hello,
these patches address some problems which prevent panfrost from
working with Mali T628 GPUs:
- incomplete/incorrect mmu memory attributes
- wrong jobs affinity on dual core group GPUs
With these patches panfrost is able to drive mali T628 (r1p0) GPU
on some armv8
From: Alexey Sheplyakov
On a dual core group GPU it's not OK to run some jobs on any core.
For such jobs the following affinity rule must be satisfied: job
slot 2 must target the core group 1, and slots 0, 1 - the core
group 0, respectively.
The kernel driver itself can't guess which jobs need a
From: Alexey Sheplyakov
T62x/T60x GPUs are known to not work with panfrost as of now.
One of the reasons is wrong/incomplete memory attributes which
the panfrost driver sets in the page tables:
- MEMATTR_IMP_DEF should be 0x48ULL, not 0x88ULL.
0x88ULL is MEMATTR_OUTER_IMP_DEF
- MEMATTR_FORCE_C
