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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 EB449C3B19F for ; Fri, 14 Feb 2020 15:50:28 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C3D9124686 for ; Fri, 14 Feb 2020 15:50:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="LQ3dOLYq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3D9124686 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=amd-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7807F6F982; Fri, 14 Feb 2020 15:50:28 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 673496F979; Fri, 14 Feb 2020 15:50:26 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 825872467D; Fri, 14 Feb 2020 15:50:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581695426; bh=I3GG6lSlT9TzpTOQSFRaoFpe2xLdXe/3lR+hI2etkKg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LQ3dOLYqJhoupFj84Uy0X/3AIuEGOY6KOiLO6hQH4HwdAgDUBnJr2+CnBonOyGuAw dJqNbmUqv7M7EmT/cqz5Z7uTSAIShy/PMAnT9hnol3vbF6gukbK6bHkW9YCutIZRWY g/4L8vzJUXPtuKHRc+e6iz3HXLWwmd9kxbSi3/kQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.5 070/542] drm/amdgpu/sriov: workaround on rev_id for Navi12 under sriov Date: Fri, 14 Feb 2020 10:41:02 -0500 Message-Id: <20200214154854.6746-70-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214154854.6746-1-sashal@kernel.org> References: <20200214154854.6746-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex Deucher , Tiecheng Zhou , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Sasha Levin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Tiecheng Zhou [ Upstream commit df5e984c8bd414561c320d6cbbb66d53abf4c7e2 ] guest vm gets 0xffffffff when reading RCC_DEV0_EPF0_STRAP0, as a consequence, the rev_id and external_rev_id are wrong. workaround it by hardcoding the rev_id to 0, which is the default value. v2. add comment in the code Signed-off-by: Tiecheng Zhou Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/nv.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c index 0ba66bef57468..de40bf12c4a8c 100644 --- a/drivers/gpu/drm/amd/amdgpu/nv.c +++ b/drivers/gpu/drm/amd/amdgpu/nv.c @@ -701,6 +701,12 @@ static int nv_common_early_init(void *handle) adev->pg_flags = AMD_PG_SUPPORT_VCN | AMD_PG_SUPPORT_VCN_DPG | AMD_PG_SUPPORT_ATHUB; + /* guest vm gets 0xffffffff when reading RCC_DEV0_EPF0_STRAP0, + * as a consequence, the rev_id and external_rev_id are wrong. + * workaround it by hardcoding rev_id to 0 (default value). + */ + if (amdgpu_sriov_vf(adev)) + adev->rev_id = 0; adev->external_rev_id = adev->rev_id + 0xa; break; default: -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx