drm/amd/display: reduce stack for dml32_CalculateVMRowAndSwath

Move stack variables to dummy structure.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c

@@ -461,6 +461,7 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
 	{
 
 		dml32_CalculateVMRowAndSwath(
+				&v->dummy_vars.dml32_CalculateVMRowAndSwath,
 				mode_lib->vba.NumberOfActiveSurfaces,
 				v->dummy_vars.DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation.SurfaceParameters,
 				v->SurfaceSizeInMALL,
@@ -2676,6 +2677,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 
 			{
 				dml32_CalculateVMRowAndSwath(
+						&v->dummy_vars.dml32_CalculateVMRowAndSwath,
 						mode_lib->vba.NumberOfActiveSurfaces,
 						v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.SurfParameters,
 						mode_lib->vba.SurfaceSizeInMALL,

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h

@@ -362,6 +362,7 @@ void dml32_CalculateSurfaceSizeInMall(
 		bool *ExceededMALLSize);
 
 void dml32_CalculateVMRowAndSwath(
+		struct dml32_CalculateVMRowAndSwath *st_vars,
 		unsigned int NumberOfActiveSurfaces,
 		DmlPipe myPipe[],
 		unsigned int SurfaceSizeInMALL[],

drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h

@@ -196,6 +196,24 @@ struct dml32_CalculateSwathAndDETConfiguration {
 	unsigned int DETBufferSizeInKByteForSwathCalculation;
 };
 
+struct dml32_CalculateVMRowAndSwath {
+	unsigned int PTEBufferSizeInRequestsForLuma[DC__NUM_DPP__MAX];
+	unsigned int PTEBufferSizeInRequestsForChroma[DC__NUM_DPP__MAX];
+	unsigned int PDEAndMetaPTEBytesFrameY;
+	unsigned int PDEAndMetaPTEBytesFrameC;
+	unsigned int MetaRowByteY[DC__NUM_DPP__MAX];
+	unsigned int MetaRowByteC[DC__NUM_DPP__MAX];
+	unsigned int PixelPTEBytesPerRowY[DC__NUM_DPP__MAX];
+	unsigned int PixelPTEBytesPerRowC[DC__NUM_DPP__MAX];
+	unsigned int PixelPTEBytesPerRowY_one_row_per_frame[DC__NUM_DPP__MAX];
+	unsigned int PixelPTEBytesPerRowC_one_row_per_frame[DC__NUM_DPP__MAX];
+	unsigned int dpte_row_width_luma_ub_one_row_per_frame[DC__NUM_DPP__MAX];
+	unsigned int dpte_row_height_luma_one_row_per_frame[DC__NUM_DPP__MAX];
+	unsigned int dpte_row_width_chroma_ub_one_row_per_frame[DC__NUM_DPP__MAX];
+	unsigned int dpte_row_height_chroma_one_row_per_frame[DC__NUM_DPP__MAX];
+	bool one_row_per_frame_fits_in_buffer[DC__NUM_DPP__MAX];
+};
+
 struct DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation {
 	unsigned int dummy_integer_array[2][DC__NUM_DPP__MAX];
 	double dummy_single_array[2][DC__NUM_DPP__MAX];
@@ -268,6 +286,7 @@ struct dummy_vars {
 	DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation;
 	struct dml32_ModeSupportAndSystemConfigurationFull dml32_ModeSupportAndSystemConfigurationFull;
 	struct dml32_CalculateSwathAndDETConfiguration dml32_CalculateSwathAndDETConfiguration;
+	struct dml32_CalculateVMRowAndSwath dml32_CalculateVMRowAndSwath;
 };
 
 struct vba_vars_st {