1 files changed, 87 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 13a177d34376..68a846323912 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -2971,6 +2971,85 @@ static int allow_edp_hotplug_detection_set(void *data, u64 val)
 	return 0;
 }
 
+static int dmub_trace_mask_set(void *data, u64 val)
+{
+	struct amdgpu_device *adev = data;
+	struct dmub_srv *srv = adev->dm.dc->ctx->dmub_srv->dmub;
+	enum dmub_gpint_command cmd;
+	u64 mask = 0xffff;
+	u8 shift = 0;
+	u32 res;
+	int i;
+
+	if (!srv->fw_version)
+		return -EINVAL;
+
+	for (i = 0;  i < 4; i++) {
+		res = (val & mask) >> shift;
+
+		switch (i) {
+		case 0:
+			cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD0;
+			break;
+		case 1:
+			cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD1;
+			break;
+		case 2:
+			cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD2;
+			break;
+		case 3:
+			cmd = DMUB_GPINT__SET_TRACE_BUFFER_MASK_WORD3;
+			break;
+		}
+
+		if (!dc_wake_and_execute_gpint(adev->dm.dc->ctx, cmd, res, NULL, DM_DMUB_WAIT_TYPE_WAIT))
+			return -EIO;
+
+		usleep_range(100, 1000);
+
+		mask <<= 16;
+		shift += 16;
+	}
+
+	return 0;
+}
+
+static int dmub_trace_mask_show(void *data, u64 *val)
+{
+	enum dmub_gpint_command cmd = DMUB_GPINT__GET_TRACE_BUFFER_MASK_WORD0;
+	struct amdgpu_device *adev = data;
+	struct dmub_srv *srv = adev->dm.dc->ctx->dmub_srv->dmub;
+	u8 shift = 0;
+	u64 raw = 0;
+	u64 res = 0;
+	int i = 0;
+
+	if (!srv->fw_version)
+		return -EINVAL;
+
+	while (i < 4) {
+		uint32_t response;
+
+		if (!dc_wake_and_execute_gpint(adev->dm.dc->ctx, cmd, 0, &response, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY))
+			return -EIO;
+
+		raw = response;
+		usleep_range(100, 1000);
+
+		cmd++;
+		res |= (raw << shift);
+		shift += 16;
+		i++;
+	}
+
+	*val = res;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(dmub_trace_mask_fops, dmub_trace_mask_show,
+			 dmub_trace_mask_set, "0x%llx\n");
+
 /*
  * Set dmcub trace event IRQ enable or disable.
  * Usage to enable dmcub trace event IRQ: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en
@@ -3647,12 +3726,16 @@ static int capabilities_show(struct seq_file *m, void *unused)
 	bool mall_supported = dc->caps.mall_size_total;
 	bool subvp_supported = dc->caps.subvp_fw_processing_delay_us;
 	unsigned int mall_in_use = false;
-	unsigned int subvp_in_use = dc->cap_funcs.get_subvp_en(dc, dc->current_state);
+	unsigned int subvp_in_use = false;
+
 	struct hubbub *hubbub = dc->res_pool->hubbub;
 
 	if (hubbub->funcs->get_mall_en)
 		hubbub->funcs->get_mall_en(hubbub, &mall_in_use);
 
+	if (dc->cap_funcs.get_subvp_en)
+		subvp_in_use = dc->cap_funcs.get_subvp_en(dc, dc->current_state);
+
 	seq_printf(m, "mall supported: %s, enabled: %s\n",
 			   mall_supported ? "yes" : "no", mall_in_use ? "yes" : "no");
 	seq_printf(m, "sub-viewport supported: %s, enabled: %s\n",
@@ -3880,6 +3963,9 @@ void dtn_debugfs_init(struct amdgpu_device *adev)
 	debugfs_create_file_unsafe("amdgpu_dm_force_timing_sync", 0644, root,
 				   adev, &force_timing_sync_ops);
 
+	debugfs_create_file_unsafe("amdgpu_dm_dmub_trace_mask", 0644, root,
+				   adev, &dmub_trace_mask_fops);
+
 	debugfs_create_file_unsafe("amdgpu_dm_dmcub_trace_event_en", 0644, root,
 				   adev, &dmcub_trace_event_state_fops);