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habanalabs/gaudi: invalidate PMMU mem cache on init 

This must be done to clear the internal mem cache so we won't get
ecc errors on the first invalidation.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Oded Gabbay 2021-08-17 13:36:06 +03:00
parent 6be42f0a1c
commit e1b61f8e97
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/habanalabs/gaudi/gaudi.c
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@ -3905,6 +3905,9 @@ static int gaudi_mmu_init(struct hl_device *hdev)
WREG32(mmSTLB_CACHE_INV_BASE_39_8, MMU_CACHE_MNG_ADDR >> 8);
WREG32(mmSTLB_CACHE_INV_BASE_49_40, MMU_CACHE_MNG_ADDR >> 40);
/* mem cache invalidation */
WREG32(mmSTLB_MEM_CACHE_INVALIDATION, 1);
hdev->asic_funcs->mmu_invalidate_cache(hdev, true, 0);
WREG32(mmMMU_UP_MMU_ENABLE, 1);