diff options
| author | Omer Shpigelman <oshpigelman@habana.ai> | 2020-05-17 17:35:39 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2020-05-25 08:15:33 +0300 |
| commit | 42d0b0b95f9822fc02440c0ae5f9192c0ebe54bf (patch) | |
| tree | 5a8365f145bed5ea537ecc1aa8f7e418ee08a76f /drivers/misc | |
| parent | ed65bfd9fd86dec3772570b0320ca85b9fb69f2e (diff) | |
| download | linux-42d0b0b95f9822fc02440c0ae5f9192c0ebe54bf.tar.bz2 | |
habanalabs: improve MMU cache invalidation code
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>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 6 |
1 files 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"); |