From: Omer Shpigelman <[email protected]> A new sequence is introduced to invalidate the MMU cache in order to avoid timeouts.
Signed-off-by: Omer Shpigelman <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]> --- drivers/misc/habanalabs/gaudi/gaudi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index 4cb1f71dd4f1..093384731f0d 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -5982,16 +5982,18 @@ static void gaudi_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard, timeout_usec = MMU_CONFIG_TIMEOUT_USEC; /* L0 & L1 invalidation */ - WREG32(mmSTLB_INV_ALL_START, 1); + WREG32(mmSTLB_INV_PS, 2); rc = hl_poll_timeout( hdev, - mmSTLB_INV_ALL_START, + mmSTLB_INV_PS, status, !status, 1000, timeout_usec); + WREG32(mmSTLB_INV_SET, 0); + if (rc) dev_notice_ratelimited(hdev->dev, "Timeout when waiting for MMU cache invalidation\n"); -- 2.17.1
