[v2 1/2] drm/amd/pm: Add VCN reset support detection for SMU v13.0.6
Jesse.Zhang
Jesse.Zhang at amd.com
Mon Aug 11 01:03:51 UTC 2025
From: Ruili Ji <ruiliji2 at amd.com>
This commit introduces support for detecting VCN reset capability through
the SMU interface. Key changes include:
1. Added amdgpu_dpm_reset_vcn_is_supported() interface to check VCN reset support
2. Implemented SMU backend functions for VCN reset capability detection
3. Added SMU_CAP(VCN_RESET) capability flag for SMU v13.0.6
4. Updated PPSMC message definitions to accommodate VCN reset functionality
5. Added version checks for VCN reset support (fw_ver >= 0x04557100)
The changes maintain backward compatibility while enabling proper detection
of VCN reset capabilities when supported by the firmware.
Signed-off-by: Ruili Ji <ruiliji2 at amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>
---
drivers/gpu/drm/amd/pm/amdgpu_dpm.c | 15 +++++++++++++++
drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h | 1 +
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 11 +++++++++++
drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h | 5 +++++
.../pm/swsmu/inc/pmfw_if/smu_v13_0_6_ppsmc.h | 4 ++--
.../drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c | 18 ++++++++++++++++++
.../drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h | 1 +
7 files changed, 53 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 6e0d711820ea..518d07afc7df 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -820,6 +820,21 @@ int amdgpu_dpm_reset_vcn(struct amdgpu_device *adev, uint32_t inst_mask)
return ret;
}
+bool amdgpu_dpm_reset_vcn_is_supported(struct amdgpu_device *adev)
+{
+ struct smu_context *smu = adev->powerplay.pp_handle;
+ bool ret;
+
+ if (!is_support_sw_smu(adev))
+ return false;
+
+ mutex_lock(&adev->pm.mutex);
+ ret = smu_reset_vcn_is_supported(smu);
+ mutex_unlock(&adev->pm.mutex);
+
+ return ret;
+}
+
int amdgpu_dpm_get_dpm_freq_range(struct amdgpu_device *adev,
enum pp_clock_type type,
uint32_t *min,
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
index 09962db988d6..9748744133d9 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
@@ -615,6 +615,7 @@ ssize_t amdgpu_dpm_get_pm_policy_info(struct amdgpu_device *adev,
int amdgpu_dpm_reset_sdma(struct amdgpu_device *adev, uint32_t inst_mask);
bool amdgpu_dpm_reset_sdma_is_supported(struct amdgpu_device *adev);
int amdgpu_dpm_reset_vcn(struct amdgpu_device *adev, uint32_t inst_mask);
+bool amdgpu_dpm_reset_vcn_is_supported(struct amdgpu_device *adev);
bool amdgpu_dpm_is_temp_metrics_supported(struct amdgpu_device *adev,
enum smu_temp_metric_type type);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index dc48a1dd8be4..a03d37bd9e48 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -4106,6 +4106,17 @@ int smu_reset_sdma(struct smu_context *smu, uint32_t inst_mask)
return ret;
}
+bool smu_reset_vcn_is_supported(struct smu_context *smu)
+{
+ bool ret = false;
+
+ dev_info(smu->adev->dev, "SMU driver smu %p\n", smu);
+ if (smu->ppt_funcs && smu->ppt_funcs->reset_vcn_is_supported)
+ ret = smu->ppt_funcs->reset_vcn_is_supported(smu);
+
+ return ret;
+}
+
int smu_reset_vcn(struct smu_context *smu, uint32_t inst_mask)
{
if (smu->ppt_funcs && smu->ppt_funcs->dpm_reset_vcn)
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 611b381b9147..7990771151be 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -1426,6 +1426,10 @@ struct pptable_funcs {
* @reset_vcn: message SMU to soft reset vcn instance.
*/
int (*dpm_reset_vcn)(struct smu_context *smu, uint32_t inst_mask);
+ /**
+ * @reset_vcn_is_supported: Check if support resets vcn.
+ */
+ bool (*reset_vcn_is_supported)(struct smu_context *smu);
/**
* @get_ecc_table: message SMU to get ECC INFO table.
@@ -1702,6 +1706,7 @@ int smu_send_rma_reason(struct smu_context *smu);
int smu_reset_sdma(struct smu_context *smu, uint32_t inst_mask);
bool smu_reset_sdma_is_supported(struct smu_context *smu);
int smu_reset_vcn(struct smu_context *smu, uint32_t inst_mask);
+bool smu_reset_vcn_is_supported(struct smu_context *smu);
int smu_set_pm_policy(struct smu_context *smu, enum pp_pm_policy p_type,
int level);
ssize_t smu_get_pm_policy_info(struct smu_context *smu,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v13_0_6_ppsmc.h b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v13_0_6_ppsmc.h
index 41f268313613..63a088ef7169 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v13_0_6_ppsmc.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v13_0_6_ppsmc.h
@@ -94,9 +94,9 @@
#define PPSMC_MSG_RmaDueToBadPageThreshold 0x43
#define PPSMC_MSG_SetThrottlingPolicy 0x44
#define PPSMC_MSG_ResetSDMA 0x4D
-#define PPSMC_MSG_ResetVCN 0x4E
#define PPSMC_MSG_GetStaticMetricsTable 0x59
-#define PPSMC_Message_Count 0x5A
+#define PPSMC_MSG_ResetVCN 0x5B
+#define PPSMC_Message_Count 0x5C
//PPSMC Reset Types for driver msg argument
#define PPSMC_RESET_TYPE_DRIVER_MODE_1_RESET 0x1
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
index 90e66c8f2f82..c25dd7427f1d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -434,6 +434,9 @@ static void smu_v13_0_6_init_caps(struct smu_context *smu)
((pgm == 0) && (fw_ver >= 0x00557900)) ||
((pgm == 4) && (fw_ver >= 0x4557000)))
smu_v13_0_6_cap_set(smu, SMU_CAP(SDMA_RESET));
+
+ if ((pgm == 4) && (fw_ver >= 0x04557100))
+ smu_v13_0_6_cap_set(smu, SMU_CAP(VCN_RESET));
}
static void smu_v13_0_x_init_caps(struct smu_context *smu)
@@ -3171,6 +3174,20 @@ static int smu_v13_0_6_reset_sdma(struct smu_context *smu, uint32_t inst_mask)
return ret;
}
+static bool smu_v13_0_6_reset_vcn_is_supported(struct smu_context *smu)
+{
+ bool ret = true;
+
+ dev_info(smu->adev->dev, "SMU driver smu_v13_0_6_reset_vcn_is_supported\n");
+ if (!smu_v13_0_6_cap_supported(smu, SMU_CAP(VCN_RESET))) {
+ dev_info(smu->adev->dev,
+ "VCN reset capability is not supported\n");
+ ret = false;
+ }
+
+ return ret;
+}
+
static int smu_v13_0_6_reset_vcn(struct smu_context *smu, uint32_t inst_mask)
{
int ret = 0;
@@ -3859,6 +3876,7 @@ static const struct pptable_funcs smu_v13_0_6_ppt_funcs = {
.reset_sdma = smu_v13_0_6_reset_sdma,
.reset_sdma_is_supported = smu_v13_0_6_reset_sdma_is_supported,
.dpm_reset_vcn = smu_v13_0_6_reset_vcn,
+ .reset_vcn_is_supported = smu_v13_0_6_reset_vcn_is_supported,
};
void smu_v13_0_6_set_ppt_funcs(struct smu_context *smu)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
index ece04ad724fb..7c98f77c429d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
@@ -64,6 +64,7 @@ enum smu_v13_0_6_caps {
SMU_CAP(RMA_MSG),
SMU_CAP(ACA_SYND),
SMU_CAP(SDMA_RESET),
+ SMU_CAP(VCN_RESET),
SMU_CAP(STATIC_METRICS),
SMU_CAP(HST_LIMIT_METRICS),
SMU_CAP(BOARD_VOLTAGE),
--
2.49.0
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