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From: Oded Gabbay <ogabbay@kernel.org>
To: linux-kernel@vger.kernel.org
Subject: [PATCH 16/16] habanalabs/gaudi: invalidate PMMU mem cache on init
Date: Wed, 18 Aug 2021 16:39:22 +0300	[thread overview]
Message-ID: <20210818133922.63637-16-ogabbay@kernel.org> (raw)
In-Reply-To: <20210818133922.63637-1-ogabbay@kernel.org>

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


      parent reply	other threads:[~2021-08-18 13:40 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 13:39 [PATCH 01/16] habanalabs/gaudi: scrub HBM to a specific value Oded Gabbay
2021-08-18 13:39 ` [PATCH 02/16] habanalabs/gaudi: move scrubbing to late init Oded Gabbay
2021-08-18 13:39 ` [PATCH 03/16] habanalabs: save pid per userptr Oded Gabbay
2021-08-18 13:39 ` [PATCH 04/16] habanalabs: fix mmu node address resolution in debugfs Oded Gabbay
2021-08-18 13:39 ` [PATCH 05/16] habanalabs/gaudi: minimize number of register reads Oded Gabbay
2021-08-18 13:39 ` [PATCH 06/16] habanalabs: update to latest firmware headers Oded Gabbay
2021-08-18 13:39 ` [PATCH 07/16] habanalabs/gaudi: increase boot fit timeout Oded Gabbay
2021-08-18 13:39 ` [PATCH 08/16] habanalabs/gaudi: restore user registers when context opens Oded Gabbay
2021-08-18 13:39 ` [PATCH 09/16] habanalabs/gaudi: add monitored SOBs to state dump Oded Gabbay
2021-08-18 13:39 ` [PATCH 10/16] habanalabs: modify multi-CS to wait on stream masters Oded Gabbay
2021-08-18 13:39 ` [PATCH 11/16] habanalabs/gaudi: fetch TPC/MME ECC errors from F/W Oded Gabbay
2021-08-18 13:39 ` [PATCH 12/16] habanalabs: add userptr_lookup node in debugfs Oded Gabbay
2021-08-18 13:39 ` [PATCH 13/16] habanalabs/gaudi: unmask out of bounds SLM access interrupt Oded Gabbay
2021-08-18 13:39 ` [PATCH 14/16] habanalabs/gaudi: define DC POWER for secured PMC Oded Gabbay
2021-08-18 13:39 ` [PATCH 15/16] habanalabs/gaudi: size should be printed in decimal Oded Gabbay
2021-08-18 13:39 ` Oded Gabbay [this message]

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