Messages in this thread Patch in this message | | | From | Oded Gabbay <> | Subject | [PATCH 16/16] habanalabs/gaudi: invalidate PMMU mem cache on init | Date | Wed, 18 Aug 2021 16:39:22 +0300 |
| |
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> --- drivers/misc/habanalabs/gaudi/gaudi.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index f244a1b8abca..ca9c3b9f08a1 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -3906,6 +3906,9 @@ 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); -- 2.17.1
| |