FAILED: patch "[PATCH] drm/amd/pm: disable cstate feature for gpu reset scenario" failed to apply to 6.0-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.0-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 <stable@vger.kernel.org>.

Possible dependencies:

b31d6ada8346 ("drm/amd/pm: disable cstate feature for gpu reset scenario")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b31d6ada8346574ce04656e5ce9676ec763f5144 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Thu, 29 Sep 2022 10:50:44 +0800
Subject: [PATCH] drm/amd/pm: disable cstate feature for gpu reset scenario

Suggested by PMFW team and same as what did for gfxoff feature.
This can address some Mode1Reset failures observed on SMU13.0.0.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index bb73fb420ffc..e0445e8cc342 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2928,6 +2928,14 @@ static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
 	amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
 	amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
 
+	/*
+	 * Per PMFW team's suggestion, driver needs to handle gfxoff
+	 * and df cstate features disablement for gpu reset(e.g. Mode1Reset)
+	 * scenario. Add the missing df cstate disablement here.
+	 */
+	if (amdgpu_dpm_set_df_cstate(adev, DF_CSTATE_DISALLOW))
+		dev_warn(adev->dev, "Failed to disallow df cstate");
+
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.valid)
 			continue;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
index 445005571f76..9cd005131f56 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
@@ -2242,9 +2242,17 @@ static void arcturus_get_unique_id(struct smu_context *smu)
 static int arcturus_set_df_cstate(struct smu_context *smu,
 				  enum pp_df_cstate state)
 {
+	struct amdgpu_device *adev = smu->adev;
 	uint32_t smu_version;
 	int ret;
 
+	/*
+	 * Arcturus does not need the cstate disablement
+	 * prerequisite for gpu reset.
+	 */
+	if (amdgpu_in_reset(adev) || adev->in_suspend)
+		return 0;
+
 	ret = smu_cmn_get_smc_version(smu, NULL, &smu_version);
 	if (ret) {
 		dev_err(smu->adev->dev, "Failed to get smu version!\n");
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index 619aee51b123..d30ec3005ea1 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -1640,6 +1640,15 @@ static bool aldebaran_is_baco_supported(struct smu_context *smu)
 static int aldebaran_set_df_cstate(struct smu_context *smu,
 				   enum pp_df_cstate state)
 {
+	struct amdgpu_device *adev = smu->adev;
+
+	/*
+	 * Aldebaran does not need the cstate disablement
+	 * prerequisite for gpu reset.
+	 */
+	if (amdgpu_in_reset(adev) || adev->in_suspend)
+		return 0;
+
 	return smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_DFCstateControl, state, NULL);
 }