[PATCH] drm/amd/pm: fix enabled features retrieving on Renoir and Cyan Skillfish

[Evan Quan]

For Cyan Skillfish and Renoir, there is no interface provided by PMFW
to retrieve the enabled features. So, we assume all features are enabled.

Fixes: 7ade3ca9cdb5 ("drm/amd/pm: correct the usage for 'supported' member of smu_feature structure")

Signed-off-by: Evan Quan <evan.quan at amd.com>
Change-Id: I1231f146405a229a11aa7ac608c8c932d3c90ee4
--
v1->v2:
  - add back the logic for supporting those ASICs which have
    no feature_map available
v2->v3:
  - update the check for smu_cmn_feature_is_enabled to use a more
    generic way instead of asic type

Change-Id: I7dfa453ffc086f5364848f7f32decd57a5a5b0e6
---
 .../amd/pm/swsmu/smu11/cyan_skillfish_ppt.c   |  1 +
 drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c        | 27 ++++++++++++++-----
 drivers/gpu/drm/amd/pm/swsmu/smu_internal.h   |  2 +-
 3 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/cyan_skillfish_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/cyan_skillfish_ppt.c
index 2b38a9154dd4..b3a0f3fb3e65 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/cyan_skillfish_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/cyan_skillfish_ppt.c
@@ -562,6 +562,7 @@ static const struct pptable_funcs cyan_skillfish_ppt_funcs = {
 	.fini_smc_tables = smu_v11_0_fini_smc_tables,
 	.read_sensor = cyan_skillfish_read_sensor,
 	.print_clk_levels = cyan_skillfish_print_clk_levels,
+	.get_enabled_mask = smu_cmn_get_enabled_mask,
 	.is_dpm_running = cyan_skillfish_is_dpm_running,
 	.get_gpu_metrics = cyan_skillfish_get_gpu_metrics,
 	.od_edit_dpm_table = cyan_skillfish_od_edit_dpm_table,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
index 2a6b752a6996..4c12abcd995d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
@@ -500,7 +500,17 @@ int smu_cmn_feature_is_enabled(struct smu_context *smu,
 	uint64_t enabled_features;
 	int feature_id;
 
-	if (smu->is_apu && adev->family < AMDGPU_FAMILY_VGH)
+	if (smu_cmn_get_enabled_mask(smu, &enabled_features)) {
+		dev_err(adev->dev, "Failed to retrieve enabled ppfeatures!\n");
+		return 0;
+	}
+
+	/*
+	 * For Renoir and Cyan Skillfish, they are assumed to have all features
+	 * enabled. Also considering they have no feature_map available, the
+	 * check here can avoid unwanted feature_map check below.
+	 */
+	if (enabled_features == ULLONG_MAX)
 		return 1;
 
 	feature_id = smu_cmn_to_asic_specific_index(smu,
@@ -509,11 +519,6 @@ int smu_cmn_feature_is_enabled(struct smu_context *smu,
 	if (feature_id < 0)
 		return 0;
 
-	if (smu_cmn_get_enabled_mask(smu, &enabled_features)) {
-		dev_err(adev->dev, "Failed to retrieve enabled ppfeatures!\n");
-		return 0;
-	}
-
 	return test_bit(feature_id, (unsigned long *)&enabled_features);
 }
 
@@ -559,7 +564,7 @@ int smu_cmn_get_enabled_mask(struct smu_context *smu,
 	feature_mask_high = &((uint32_t *)feature_mask)[1];
 
 	switch (adev->ip_versions[MP1_HWIP][0]) {
-	case IP_VERSION(11, 0, 8):
+	/* For Vangogh and Yellow Carp */
 	case IP_VERSION(11, 5, 0):
 	case IP_VERSION(13, 0, 1):
 	case IP_VERSION(13, 0, 3):
@@ -575,8 +580,16 @@ int smu_cmn_get_enabled_mask(struct smu_context *smu,
 						      1,
 						      feature_mask_high);
 		break;
+	/*
+	 * For Cyan Skillfish and Renoir, there is no interface provided by PMFW
+	 * to retrieve the enabled features. So, we assume all features are enabled.
+	 * TODO: add other APU ASICs which suffer from the same issue here
+	 */
+	case IP_VERSION(11, 0, 8):
 	case IP_VERSION(12, 0, 0):
 	case IP_VERSION(12, 0, 1):
+		memset(feature_mask, 0xff, sizeof(*feature_mask));
+		break;
 	/* other dGPU ASICs */
 	default:
 		ret = smu_cmn_send_smc_msg(smu,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_internal.h b/drivers/gpu/drm/amd/pm/swsmu/smu_internal.h
index 530be44e00ec..15bcf72b8e56 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu_internal.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu_internal.h
@@ -55,7 +55,7 @@
 #define smu_send_smc_msg(smu, msg, read_arg)				smu_ppt_funcs(send_smc_msg, 0, smu, msg, read_arg)
 #define smu_init_display_count(smu, count)				smu_ppt_funcs(init_display_count, 0, smu, count)
 #define smu_feature_set_allowed_mask(smu)				smu_ppt_funcs(set_allowed_mask, 0, smu)
-#define smu_feature_get_enabled_mask(smu, mask)				smu_ppt_funcs(get_enabled_mask, 0, smu, mask)
+#define smu_feature_get_enabled_mask(smu, mask)				smu_ppt_funcs(get_enabled_mask, -EOPNOTSUPP, smu, mask)
 #define smu_feature_is_enabled(smu, mask)				smu_ppt_funcs(feature_is_enabled, 0, smu, mask)
 #define smu_disable_all_features_with_exception(smu, mask)		smu_ppt_funcs(disable_all_features_with_exception, 0, smu, mask)
 #define smu_is_dpm_running(smu)						smu_ppt_funcs(is_dpm_running, 0 , smu)
-- 
2.29.0