// Copyright (c) 2009-2011, Tor M. Aamodt, Ahmed El-Shafiey, Tayler Hetherington
// The University of British Columbia
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// Redistributions in binary form must reproduce the above copyright notice, this
// list of conditions and the following disclaimer in the documentation and/or
// other materials provided with the distribution.
// Neither the name of The University of British Columbia nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "power_interface.h"

void init_mcpat(const gpgpu_sim_config &config, class gpgpu_sim_wrapper *wrapper, unsigned stat_sample_freq, unsigned tot_inst, unsigned inst){

	wrapper->init_mcpat(config.g_power_config_name, config.g_power_filename, config.g_power_trace_filename,
	    			config.g_metric_trace_filename,config.g_steady_state_tracking_filename,config.g_power_simulation_enabled,
	    			config.g_power_trace_enabled,config.g_steady_power_levels_enabled,config.g_power_per_cycle_dump,
	    			config.gpu_steady_power_deviation,config.gpu_steady_min_period,config.g_power_trace_zlevel,
	    			tot_inst+inst,stat_sample_freq
	    			);

}

void mcpat_cycle(const gpgpu_sim_config &config, const struct shader_core_config *shdr_config, class gpgpu_sim_wrapper *wrapper, class power_stat_t *power_stats, unsigned stat_sample_freq, unsigned tot_cycle, unsigned cycle, unsigned tot_inst, unsigned inst){

	static bool mcpat_init=true;

	if(mcpat_init){ // If first cycle, don't have any power numbers yet
		mcpat_init=false;
		return;
	}

	if ((tot_cycle+cycle) % stat_sample_freq == 0) {

		wrapper->set_inst_power(shdr_config->gpgpu_clock_gated_lanes,
				stat_sample_freq, stat_sample_freq,
				power_stats->get_total_inst(), power_stats->get_total_int_inst(),
				power_stats->get_total_fp_inst(), power_stats->get_l1d_read_accesses(),
				power_stats->get_l1d_write_accesses(), power_stats->get_committed_inst());

		// Single RF for both int and fp ops
		wrapper->set_regfile_power(power_stats->get_regfile_reads(), power_stats->get_regfile_writes(), power_stats->get_non_regfile_operands());

		//Instruction cache stats
		wrapper->set_icache_power(power_stats->get_inst_c_hits(), power_stats->get_inst_c_misses());

		//Constant Cache, shared memory, texture cache
		wrapper->set_ccache_power(power_stats->get_constant_c_hits(), power_stats->get_constant_c_misses());
		wrapper->set_tcache_power(power_stats->get_texture_c_hits(), power_stats->get_texture_c_misses());
		wrapper->set_shrd_mem_power(power_stats->get_shmem_read_access());

		wrapper->set_l1cache_power(power_stats->get_l1d_read_hits(), power_stats->get_l1d_read_misses(),
				power_stats->get_l1d_write_hits(), power_stats->get_l1d_write_misses());


		wrapper->set_l2cache_power(power_stats->get_l2_read_hits(), power_stats->get_l2_read_misses(),
				power_stats->get_l2_write_hits(), power_stats->get_l2_write_misses());


		float active_sms=(*power_stats->m_active_sms)/stat_sample_freq;
		float num_cores = shdr_config->num_shader();
		float num_idle_core = num_cores - active_sms;
		wrapper->set_idle_core_power(num_idle_core);

		//pipeline power - pipeline_duty_cycle *= percent_active_sms;
		float pipeline_duty_cycle=((*power_stats->m_average_pipeline_duty_cycle/( stat_sample_freq)) < 0.8)?((*power_stats->m_average_pipeline_duty_cycle)/stat_sample_freq):0.8;
		wrapper->set_duty_cycle_power(pipeline_duty_cycle);

		//Memory Controller
		wrapper->set_mem_ctrl_power(power_stats->get_dram_rd(), power_stats->get_dram_wr(), power_stats->get_dram_pre());

		//Execution pipeline accesses
		//FPU (SP) accesses, Integer ALU (not present in Tesla), Sfu accesses
		wrapper->set_exec_unit_power(power_stats->get_tot_fpu_accessess(), power_stats->get_ialu_accessess(), power_stats->get_tot_sfu_accessess());

		//Average active lanes for sp and sfu pipelines
		float avg_sp_active_lanes=(power_stats->get_sp_active_lanes())/stat_sample_freq;
		float avg_sfu_active_lanes=(power_stats->get_sfu_active_lanes())/stat_sample_freq;
		assert(avg_sp_active_lanes<=32);
		assert(avg_sfu_active_lanes<=32);
		wrapper->set_active_lanes_power((power_stats->get_sp_active_lanes())/stat_sample_freq,
				(power_stats->get_sfu_active_lanes())/stat_sample_freq);


		//NoC stats (32/4)--> Number of 32 bit words in 32B block
		//unsigned l2cache_tot_access = power_stats->get_l2_read_accesses() +  power_stats->get_l2_write_accesses();
		unsigned n_icnt_simt_to_mem = power_stats->get_icnt_simt_to_mem(); // # flits from SIMT clusters to memory partitions
		unsigned n_icnt_mem_to_simt = power_stats->get_icnt_mem_to_simt(); // # flits from memory partitions to SIMT clusters
		//wrapper->set_NoC_power((double)(n_icnt_mem_to_simt + n_icnt_simt_to_mem)); // Number of flits traversing the interconnect
		wrapper->set_NoC_power(n_icnt_mem_to_simt, n_icnt_simt_to_mem); // Number of flits traversing the interconnect

		wrapper->compute();


		wrapper->update_components_power();
		wrapper->print_trace_files();
		power_stats->save_stats();

		wrapper->detect_print_steady_state(0,tot_inst+inst);

		wrapper->power_metrics_calculations();


		wrapper->dump();
	}
	//wrapper->close_files();
}

void mcpat_reset_perf_count(class gpgpu_sim_wrapper *wrapper, bool do_print){
	wrapper->reset_counters(do_print);
}