Messages in this thread Patch in this message | | | From | Oded Gabbay <> | Subject | [PATCH 1/4] habanalabs: improve MMU cache invalidation code | Date | Thu, 21 May 2020 10:02:02 +0300 |
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From: Omer Shpigelman <oshpigelman@habana.ai>
A new sequence is introduced to invalidate the MMU cache in order to avoid timeouts.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> --- 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
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