mfcmemory.c

Samsung公司S3C6400芯片的BSP源码包

/*
 * Project Name MFC DRIVER
 * Copyright  2007 Samsung Electronics Co, Ltd. All Rights Reserved.
 *
 * This software is the confidential and proprietary information
 * of Samsung Electronics  ("Confidential Information").
 * you shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Samsung Electronics
 *
 * This source file is for setting physical memory.
 *
 * @name MFC DRIVER MODULE Module (MfcMemory.c)
 * @author Jiun, Yu([e-mail])
 * @date 03-28-07
 */

#include <windows.h>
#include <DrvLib.h>
#include "LogMsg.h"

void *Phy2Vir_AddrMapping(unsigned int phy_addr, int mem_size)
{
#if	1
	void *mappedAddr = NULL;

	mappedAddr = DrvLib_MapIoSpace(phy_addr, mem_size, FALSE);
	if (mappedAddr == NULL)
	{
		RETAILMSG(1, (L"[MFC:ERR] Phy2Vir_AddrMapping() : Mapping Failed [PA:0x%08x]\n\r", phy_addr));
	}

	return mappedAddr;
#else
	BOOL					b;
	void					*reserved_mem;

	reserved_mem = (void *)VirtualAlloc(NULL, mem_size, MEM_RESERVE, PAGE_NOACCESS);
	if (reserved_mem == NULL) {
		ERRORMSG(1,(TEXT("For IOPreg: VirtualAlloc failed!\r\n")));
		return 0;
	}

	b = VirtualCopy(reserved_mem,
	                (void *)(phy_addr >> 8),
	                mem_size,
	                PAGE_PHYSICAL | PAGE_READWRITE | PAGE_NOCACHE);

	if (b == FALSE) {
		VirtualFree(reserved_mem, 0, MEM_RELEASE);
		return NULL;
	}
	return reserved_mem;
#endif
}

void *Mem_Alloc(unsigned int size)
{
	void	*alloc_mem;

	alloc_mem = (void *) malloc(size);
	if (alloc_mem == NULL) {
		LOG_MSG(LOG_ERROR, "Mem_Alloc", "memory allocation failed!\r\n");
		return NULL;
	}

	return alloc_mem;
}

void Mem_Free(void *addr)
{
	free(addr);
}

void *Mem_Cpy(void *dst, const void *src, int size)
{
	return memcpy(dst, src, size);
}

int   Mem_Set(void *dst, int value, int size)
{
	memset(dst, value, size);

	return value;
}

int Copy_From_User(void *to, const void *from, unsigned long n)
{
	return (int)memcpy(to, from, n);
}

int Copy_To_User(void *to, const void *from, unsigned long n)
{
	return (int)memcpy(to, from, n);
}