drm/amd/display: Move populate phaton function to dml

The function dcn32_helper_populate_phantom_dlg_params uses FPU
operations. For this reason, this commit moves this function to the
dcn32_fpu file, and we ensure that we only invoke it under the
kernel_fpu protection.

Tested-by: Daniel Wheeler <[e-mail]>
Reviewed-by: Harry Wentland <[e-mail]>
Signed-off-by: Rodrigo Siqueira <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c

···
 #include "dml/dcn30/display_mode_vba_30.h"
 #include "vm_helper.h"
 #include "dcn20/dcn20_vmid.h"
+#include "dml/dcn32/dcn32_fpu.h"
 
 #define DCN_BASE__INST0_SEG1                       0x000000C0
 #define DCN_BASE__INST0_SEG2                       0x000034C0
···
 		.reg_name = NBIO_BASE(regBIF_BX0_ ## reg_name ## _BASE_IDX) + \
 					regBIF_BX0_ ## reg_name
 
+#undef CTX
 #define CTX ctx
 #define REG(reg_name) \
 	(DCN_BASE.instance[0].segment[reg ## reg_name ## _BASE_IDX] + reg ## reg_name)
···
 			memset(split, 0, MAX_PIPES * sizeof(int));
 			memset(merge, 0, MAX_PIPES * sizeof(bool));
 			*vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, *vlevel, split, merge);
+
+			// Most populate phantom DLG params before programming hardware / timing for phantom pipe
+			DC_FP_START();
+			dcn32_helper_populate_phantom_dlg_params(dc, context, pipes, *pipe_cnt);
+			DC_FP_END();
 
 			// Note: We can't apply the phantom pipes to hardware at this time. We have to wait
 			// until driver has acquired the DMCUB lock to do it safely.

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c

···
 
 /**
  * ********************************************************************************************
- * dcn32_helper_populate_phantom_dlg_params: Get DLG params for phantom pipes and populate pipe_ctx
- * with those params.
- *
- * This function must be called AFTER the phantom pipes are added to context and run through DML
- * (so that the DLG params for the phantom pipes can be populated), and BEFORE we program the
- * timing for the phantom pipes.
- *
- * @param [in] dc: current dc state
- * @param [in] context: new dc state
- * @param [in] pipes: DML pipe params array
- * @param [in] pipe_cnt: DML pipe count
- *
- * @return: void
- *
- * ********************************************************************************************
- */
-void dcn32_helper_populate_phantom_dlg_params(struct dc *dc,
-		struct dc_state *context,
-		display_e2e_pipe_params_st *pipes,
-		int pipe_cnt)
-{
-	uint32_t i, pipe_idx;
-	for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
-		if (!pipe->stream)
-			continue;
-
-		if (pipe->plane_state && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
-			pipes[pipe_idx].pipe.dest.vstartup_start = get_vstartup(&context->bw_ctx.dml, pipes, pipe_cnt,
-					pipe_idx);
-			pipes[pipe_idx].pipe.dest.vupdate_offset = get_vupdate_offset(&context->bw_ctx.dml, pipes, pipe_cnt,
-					pipe_idx);
-			pipes[pipe_idx].pipe.dest.vupdate_width = get_vupdate_width(&context->bw_ctx.dml, pipes, pipe_cnt,
-					pipe_idx);
-			pipes[pipe_idx].pipe.dest.vready_offset = get_vready_offset(&context->bw_ctx.dml, pipes, pipe_cnt,
-					pipe_idx);
-			pipe->pipe_dlg_param = pipes[pipe_idx].pipe.dest;
-		}
-		pipe_idx++;
-	}
-}
-
-/**
- * ********************************************************************************************
  * dcn32_helper_calculate_num_ways_for_subvp: Calculate number of ways needed for SubVP
  *
  * This function first checks the bytes required per pixel on the SubVP pipe, then calculates

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

···
 	clk_mgr->base.bw_params->wm_table.nv_entries[WM_D].pmfw_breakdown.max_uclk = 0xFFFF;
 }
 
+/**
+ * dcn32_helper_populate_phantom_dlg_params - Get DLG params for phantom pipes
+ * and populate pipe_ctx with those params.
+ *
+ * This function must be called AFTER the phantom pipes are added to context
+ * and run through DML (so that the DLG params for the phantom pipes can be
+ * populated), and BEFORE we program the timing for the phantom pipes.
+ *
+ * @dc: [in] current dc state
+ * @context: [in] new dc state
+ * @pipes: [in] DML pipe params array
+ * @pipe_cnt: [in] DML pipe count
+ */
+void dcn32_helper_populate_phantom_dlg_params(struct dc *dc,
+					      struct dc_state *context,
+					      display_e2e_pipe_params_st *pipes,
+					      int pipe_cnt)
+{
+	uint32_t i, pipe_idx;
+
+	dc_assert_fp_enabled();
+
+	for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
+		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
+
+		if (!pipe->stream)
+			continue;
+
+		if (pipe->plane_state && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
+			pipes[pipe_idx].pipe.dest.vstartup_start =
+				get_vstartup(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+			pipes[pipe_idx].pipe.dest.vupdate_offset =
+				get_vupdate_offset(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+			pipes[pipe_idx].pipe.dest.vupdate_width =
+				get_vupdate_width(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+			pipes[pipe_idx].pipe.dest.vready_offset =
+				get_vready_offset(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+			pipe->pipe_dlg_param = pipes[pipe_idx].pipe.dest;
+		}
+		pipe_idx++;
+	}
+}
+

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.h

···
 
 void dcn32_build_wm_range_table_fpu(struct clk_mgr_internal *clk_mgr);
 
+void dcn32_helper_populate_phantom_dlg_params(struct dc *dc,
+					      struct dc_state *context,
+					      display_e2e_pipe_params_st *pipes,
+					      int pipe_cnt);
+
 #endif