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#include "mvOs.h"
#include "ctrlEnv/mvCtrlEnvSpec.h"
#include "ctrlEnv/mvCtrlEnvLib.h"
#include "xor/mvXor.h"
#include "xor/mvXorRegs.h"
#include "ddr2_3/mvDramIfRegs.h"
#include "ddr2_3/mvDramIf.h"
#include "cpu/mvCpu.h"

#define SCRB_XOR_UNIT	0
#define SCRB_XOR_CHAN	1
#define SCRB_XOR_WIN   	0

static MV_U32 uiXorRegsCtrlBackup=1;
static MV_U32 uiXorRegsBaseBackup=1;
static MV_U32 uiXorRegsMaskBackup=1;
/*************************************************************************/
MV_U32 mvDramCsSizeGet(MV_U32 cs)
{
	MV_U32 size;
	size = MV_REG_READ(SDRAM_SIZE_REG(cs)) & SDRAM_ADDR_MASK;
	if (size > 0) 
		size |= ~(SDRAM_ADDR_MASK);
	return size;
}

MV_VOID mvSysXorInit2( MV_U32 uiCS)
{
	MV_U32 uiReg, uiBase, size, base;
	MV_U32 bankAttr[4]={0xe00, 0xd00, 0xb00,0x700};

	uiXorRegsCtrlBackup = MV_REG_READ(XOR_WINDOW_CTRL_REG(SCRB_XOR_UNIT, SCRB_XOR_CHAN));
	uiXorRegsBaseBackup = MV_REG_READ(XOR_BASE_ADDR_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN));
	uiXorRegsMaskBackup = MV_REG_READ(XOR_SIZE_MASK_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN));
//	printf(" regs 20250=0x%08x, 20240=0x%08x\n", MV_REG_READ(0x20250), MV_REG_READ(0x20240));
	uiReg = 0x1; 					/* 	Enable Window x for each CS */
	uiReg |= (0x3 << 16); 					/* 	Enable Window x for each CS */

	MV_REG_WRITE(XOR_WINDOW_CTRL_REG(SCRB_XOR_UNIT, SCRB_XOR_CHAN), uiReg);

	base=0;
	size = mvDramCsSizeGet(uiCS);
	if(size) {
//			if ((base+size) > SDRAM_MAX_ADDR)
//				size = SDRAM_MAX_ADDR - base -1;

			uiBase = ((base / _64K) << XEBARX_BASE_OFFS) | bankAttr[uiCS];
	
			MV_REG_WRITE(XOR_BASE_ADDR_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN), uiBase);
			base += size +1;
			size = (size / _64K) << 16;
			/* window x - Size - 256 MB */
			MV_REG_WRITE(XOR_SIZE_MASK_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN), size);
	}
//	printf("** XOR chanel=%d, WIN %d, CTRL=0x%08x, base=0x%08x, size=0x%08x\n", SCRB_XOR_CHAN, SCRB_XOR_WIN,
//		   MV_REG_READ(XOR_WINDOW_CTRL_REG(SCRB_XOR_UNIT, SCRB_XOR_CHAN)),
//		   MV_REG_READ(XOR_BASE_ADDR_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN)), 
//		   MV_REG_READ(XOR_SIZE_MASK_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN)));
	
	mvXorHalInit(0);
	
	return;
}

MV_VOID mvSysXorFinish2(void)
{
	MV_REG_WRITE(XOR_WINDOW_CTRL_REG(SCRB_XOR_UNIT, SCRB_XOR_CHAN), uiXorRegsCtrlBackup);
	MV_REG_WRITE(XOR_BASE_ADDR_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN), uiXorRegsBaseBackup);
	MV_REG_WRITE(XOR_SIZE_MASK_REG(SCRB_XOR_UNIT, SCRB_XOR_WIN), uiXorRegsMaskBackup);
}

MV_VOID mvDramScrubbing(void)
{
	int cs;
	MV_U32 size, temp;
	MV_U32 totalMem;
	MV_U64 total;
	MV_U32 start_addr;

	if (0 == mvCtrlDDRECC())  /* read SatR enable ECC */
		return;
	if (whoAmI())	/* only cpu 0 will make Scrubbing */
		return;

	printf("Dram Scrubbing starting (use XOR chanel %d)\n",SCRB_XOR_CHAN);
	totalMem = 0;
	/* DDR training scrub DDR till 0x1000000 */

	temp = MV_REG_READ(REG_SDRAM_CONFIG_ADDR);
	 temp |= (1 << REG_SDRAM_CONFIG_IERR);
	 MV_REG_WRITE(REG_SDRAM_CONFIG_ADDR, temp);

	for (cs=0; cs < CONFIG_NR_DRAM_BANKS; cs++) {
		size = mvDramIfHwCsSizeGet(cs);
		if (size == 0)
			continue;
		total = (MV_U64)size + 1;
		totalMem += (MV_U32)(total / _1G);
		start_addr = 0;
		mvSysXorInit2(cs);
		if (0 == cs) {
			start_addr = 0x1000000;
			size -= start_addr;
//			if ((size + start_addr) > SDRAM_MAX_ADDR)
//				size = (SDRAM_MAX_ADDR-1) - start_addr;
		}
//		if ((size + start_addr) > SDRAM_MAX_ADDR)
//			size = SDRAM_MAX_ADDR - start_addr -1;
		printf("       CS %d Dram Scrubbing  0x%x:0x%x\n", cs, start_addr,(start_addr+size));

		mvXorMemInit(SCRB_XOR_CHAN, start_addr, size, 0xbeefdead, 0xbeefdead);
		/* wait for previous transfer completion */
		while (mvXorStateGet(SCRB_XOR_CHAN) != MV_IDLE);
		mvSysXorFinish2();
	}
	temp = MV_REG_READ(REG_SDRAM_CONFIG_ADDR);
	temp &= ~(1 << REG_SDRAM_CONFIG_IERR);
	MV_REG_WRITE(REG_SDRAM_CONFIG_ADDR, temp);

	printf("       Total physical DRAM size = %d GB\n\n", (int)totalMem);
}