[PATCH 6.8 164/336] drm/amd/pm: fix the high voltage issue after unload

Greg Kroah-Hartman
2024-05-14T10:38:08Z

From: Kenneth Feng <kenneth.feng@amd.com>

[ Upstream commit 3818708e9c9712e2ba4006bc23502ee7b031bd3f ]

fix the high voltage issue after unload on smu 13.0.10

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 26 ++++++++++--------
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 27 +++++++++++++++++--
drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h | 1 +
.../drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 8 +++++-
4 files changed, 48 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index d0afb9ba3789c..14d878675586a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4120,18 +4120,22 @@ int amdgpu_device_init(struct amdgpu_device *adev,
adev->ip_blocks[i].status.hw = true;
}
}
+ } else if (amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 10) &&
+ !amdgpu_device_has_display_hardware(adev)) {
+ r = psp_gpu_reset(adev);
} else {
- tmp = amdgpu_reset_method;
- /* It should do a default reset when loading or reloading the driver,
- * regardless of the module parameter reset_method.
- */
- amdgpu_reset_method = AMD_RESET_METHOD_NONE;
- r = amdgpu_asic_reset(adev);
- amdgpu_reset_method = tmp;
- if (r) {
- dev_err(adev->dev, "asic reset on init failed\n");
- goto failed;
- }
+ tmp = amdgpu_reset_method;
+ /* It should do a default reset when loading or reloading the driver,
+ * regardless of the module parameter reset_method.
+ */
+ amdgpu_reset_method = AMD_RESET_METHOD_NONE;
+ r = amdgpu_asic_reset(adev);
+ amdgpu_reset_method = tmp;
+ }
+
+ if (r) {
+ dev_err(adev->dev, "asic reset on init failed\n");
+ goto failed;
}
}

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 0ad947df777ab..ba1597b01a970 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -734,7 +734,7 @@ static int smu_early_init(void *handle)
smu->adev = adev;
smu->pm_enabled = !!amdgpu_dpm;
smu->is_apu = false;
- smu->smu_baco.state = SMU_BACO_STATE_EXIT;
+ smu->smu_baco.state = SMU_BACO_STATE_NONE;
smu->smu_baco.platform_support = false;
smu->user_dpm_profile.fan_mode = -1;

@@ -1954,10 +1954,25 @@ static int smu_smc_hw_cleanup(struct smu_context *smu)
return 0;
}

+static int smu_reset_mp1_state(struct smu_context *smu)
+{
+ struct amdgpu_device *adev = smu->adev;
+ int ret = 0;
+
+ if ((!adev->in_runpm) && (!adev->in_suspend) &&
+ (!amdgpu_in_reset(adev)) && amdgpu_ip_version(adev, MP1_HWIP, 0) ==
+ IP_VERSION(13, 0, 10) &&
+ !amdgpu_device_has_display_hardware(adev))
+ ret = smu_set_mp1_state(smu, PP_MP1_STATE_UNLOAD);
+
+ return ret;
+}
+
static int smu_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
struct smu_context *smu = adev->powerplay.pp_handle;
+ int ret;

if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))
return 0;
@@ -1975,7 +1990,15 @@ static int smu_hw_fini(void *handle)

adev->pm.dpm_enabled = false;

- return smu_smc_hw_cleanup(smu);
+ ret = smu_smc_hw_cleanup(smu);
+ if (ret)
+ return ret;
+
+ ret = smu_reset_mp1_state(smu);
+ if (ret)
+ return ret;
+
+ return 0;
}

static void smu_late_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index 66e84defd0b6e..2aa4fea873147 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -424,6 +424,7 @@ enum smu_reset_mode {
enum smu_baco_state {
SMU_BACO_STATE_ENTER = 0,
SMU_BACO_STATE_EXIT,
+ SMU_BACO_STATE_NONE,
};

struct smu_baco_context {
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
index 9c03296f92cdd..67117ced7c6ae 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -2751,7 +2751,13 @@ static int smu_v13_0_0_set_mp1_state(struct smu_context *smu,

switch (mp1_state) {
case PP_MP1_STATE_UNLOAD:
- ret = smu_cmn_set_mp1_state(smu, mp1_state);
+ ret = smu_cmn_send_smc_msg_with_param(smu,
+ SMU_MSG_PrepareMp1ForUnload,
+ 0x55, NULL);
+
+ if (!ret && smu->smu_baco.state == SMU_BACO_STATE_EXIT)
+ ret = smu_v13_0_disable_pmfw_state(smu);
+
break;
default:
/* Ignore others */
--
2.43.0