From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 279FC7B3EB for ; Wed, 19 Jun 2024 08:38:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718786328; cv=none; b=UAHhTMWkI2ztBBixQhReEm0JGz/0YxicqjYGYRz38rR6c/qkx8J6Gu0nILg51Ev6aX5+bPSuzimd0L+nq3U1nv5AKFhKFrw6OXjaSfsiUHY3hcDAvJC6ME9PqB7pZivs09QvavB8exmcy6FuY43w5C924RtgL88/mwZW2ER1Wrw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718786328; c=relaxed/simple; bh=iwyeILm+y9Ef1YHWoXtOx9Wq5SIvdgcXeHB24kwdal4=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=L2jGmKHzYBKe7A3osHS2Z5pyoE3F/98zM4lvxoEpFPJXy3KFcmY3iJF3oqw2AY66yMHC2yXwT0kwTHc06VZXCPa5A2n05ASXdzDbD9VobUYnYoDEcgVC8qxETT9B87jTMK0klrjFkdqcLxO4RjQhrWa4pIroQrLl2wFp4i203Ko= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=d9PPk3iK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="d9PPk3iK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71166C2BBFC; Wed, 19 Jun 2024 08:38:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718786327; bh=iwyeILm+y9Ef1YHWoXtOx9Wq5SIvdgcXeHB24kwdal4=; h=Subject:To:Cc:From:Date:From; b=d9PPk3iKA0uksvj7LIJ91lnipfRqZEziBWtb/IjRzM7qjgHqHwyOH5l/GH9Pa03dL IGmKPVQuTwzcsSgc6cDB1D+3dnCuFDKcu/T2+odUwBM8YVM+iXZNtL1/5/+gZVEFJG 6xeA0rSIwFYL9DfHpmdzJVSYOQfhI27GOxPQHUXs= Subject: FAILED: patch "[PATCH] drm/amdgpu: Reset dGPU if suspend got aborted" failed to apply to 6.6-stable tree To: lijo.lazar@amd.com,Hawking.Zhang@amd.com,alexander.deucher@amd.com,kevinyang.wang@amd.com Cc: From: Date: Wed, 19 Jun 2024 10:38:32 +0200 Message-ID: <2024061932-pox-humid-9244@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x df3c7dc5c58b1f85033d2cd9a121b27844700ca2 # git commit -s git send-email --to '' --in-reply-to '2024061932-pox-humid-9244@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: df3c7dc5c58b ("drm/amdgpu: Reset dGPU if suspend got aborted") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From df3c7dc5c58b1f85033d2cd9a121b27844700ca2 Mon Sep 17 00:00:00 2001 From: Lijo Lazar Date: Wed, 14 Feb 2024 17:55:54 +0530 Subject: [PATCH] drm/amdgpu: Reset dGPU if suspend got aborted For SOC21 ASICs, there is an issue in re-enabling PM features if a suspend got aborted. In such cases, reset the device during resume phase. This is a workaround till a proper solution is finalized. Signed-off-by: Lijo Lazar Reviewed-by: Alex Deucher Reviewed-by: Yang Wang Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c index 8526282f4da1..abe319b0f063 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc21.c +++ b/drivers/gpu/drm/amd/amdgpu/soc21.c @@ -867,10 +867,35 @@ static int soc21_common_suspend(void *handle) return soc21_common_hw_fini(adev); } +static bool soc21_need_reset_on_resume(struct amdgpu_device *adev) +{ + u32 sol_reg1, sol_reg2; + + /* Will reset for the following suspend abort cases. + * 1) Only reset dGPU side. + * 2) S3 suspend got aborted and TOS is active. + */ + if (!(adev->flags & AMD_IS_APU) && adev->in_s3 && + !adev->suspend_complete) { + sol_reg1 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81); + msleep(100); + sol_reg2 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81); + + return (sol_reg1 != sol_reg2); + } + + return false; +} + static int soc21_common_resume(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (soc21_need_reset_on_resume(adev)) { + dev_info(adev->dev, "S3 suspend aborted, resetting..."); + soc21_asic_reset(adev); + } + return soc21_common_hw_init(adev); }