#include <stdio.h>
#include <stdlib.h>
#include "CellDmaManager.h"

unsigned int CellDmaManager::wait_time, CellDmaManager::busy_time;
unsigned long long CellDmaManager::global_busy_time, CellDmaManager::global_wait_time;

/**
 * DMA Load
 *
 * @param[in] buf  Buffer of Load Data
 * @param[in] addr Address of Load Data at Main Memory
 * @param[in] size Size of Load Data
 * @param[in] mask DMA tag
*/
void
CellDmaManager::dma_load(void *buf, uint32 addr, uint32 size, uint32 mask)
{
    if (size == 0) return ;
    mfc_get((volatile void *)buf, addr, size, mask, 0, 0);
}

/**
 * DMA Store
 *
 * @param[in] buf  Buffer of Store Data at SPE
 * @param[in] addr Address of Store Data at Main Memory
 * @param[in] size Size of Store Data
 * @param[in] mask DMA tag
*/
void
CellDmaManager::dma_store(void *buf, uint32 addr, uint32 size, uint32 mask)
{
    if (size == 0) return ;
    mfc_put((volatile void *)buf, addr, size, mask, 0, 0);
}

/**
 * DMA Wait
 *
 * @param[in] mask Tag for Wait DMA process
 */

static void
CellDmaManager::start_dmawait_profile()
{
    wait_time = spu_readch(SPU_RdDec); 
    // global 変数にする
    global_busy_time += busy_time - wait_time;
    spu_writech(SPU_WrDec, 0xffffffff);
}

static void
CellDmaManager::end_dmawait_profile()
{
    wait_time = spu_readch(SPU_RdDec);
    // global 変数にする
    global_wait_time += 0xffffffff - wait_time;
    busy_time = wait_time;
}

// ここでプリント、ppu側から Task にして投げる
void
CellDmaManager::print_wait()
{    
}

void
CellDmaManager::show_dma_wait(int cpu)
{

  printf("spu%d: global_wait_time = %lld\n",cpu, global_wait_time);
  printf("spu%d: global_busy_time = %lld\n",cpu, global_busy_time);
  printf("spu%d: busy_ratio = %g%%\n",cpu, 
	 ((double)global_busy_time)/((double)(global_busy_time+global_wait_time))*100.0);
}

void
CellDmaManager::dma_wait(uint32 mask)
{
#ifdef SPU_PROFILE
    start_dmawait_profile();
#endif
    mfc_write_tag_mask(1 << mask);
    mfc_write_tag_update_all();
    mfc_read_tag_status();
#ifdef SPU_PROFILE
    end_dmawait_profile();
#endif
}

void
CellDmaManager::mail_write(uint32 data)
{
    spu_write_out_mbox(data);
}

unsigned int
CellDmaManager::mail_read(void)
{
    unsigned int mail = spu_read_in_mbox();
    return mail;
}

void
CellDmaManager::dma_loadList(ListDataPtr list, void *buff, uint32 mask)
{
    mfc_getl(buff, 0, list->element, sizeof(mfc_list_element_t)*list->length,
	     mask, 0, 0);
}

void
CellDmaManager::dma_storeList(ListDataPtr list, void *buff, uint32 mask)
{
    mfc_putl(buff, 0, list->element, sizeof(mfc_list_element_t)*list->length,
	     mask, 0, 0);
}