From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00A9AC4338F for ; Wed, 18 Aug 2021 13:40:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DCF31610A7 for ; Wed, 18 Aug 2021 13:40:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238365AbhHRNlC (ORCPT ); Wed, 18 Aug 2021 09:41:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:40788 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237270AbhHRNkT (ORCPT ); Wed, 18 Aug 2021 09:40:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 53762610E6 for ; Wed, 18 Aug 2021 13:39:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629293984; bh=bnVLjo3GTdjO12NtHwiDCL6iWBqb00hNb/jqGqv+2DI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=i/7j0bQr8yet4GxR0MgoLfxKGLNQ0o0ujBCvkmCzmakFCLuUYbcLJnTIExpn3TJIi MqsehiuQhViKXTYd9xpdLiDEMeJwzxqhCTBHc4dliEJupI4b3fAnZLlIRSE8N+doyU IK3VxWhXIZpT8HK8xa1tPwnpFQEzdyxC3piiTRbQkjB2eAEsDA4LBiRx7dhrnaIr06 ZEfw7xxMPtYVaH7/bP4J7GCy6IY9l6QY+gXS+eHV/rUfkYsdZvHNFrQDnwCdpZrh4g 84ctp+vl6ol000AHDkJbukMF/jD8Ropc4yCuVa5qo/yHEKlX5y1gCHgNd63zGjc5QT F4bR/UjfN6YfA== From: Oded Gabbay 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 Message-Id: <20210818133922.63637-16-ogabbay@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210818133922.63637-1-ogabbay@kernel.org> References: <20210818133922.63637-1-ogabbay@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.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 --- 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