sd_pap.c

此压缩包为杰得开发得z228的BSP的源代码,可以实现很多功能,尤其是视频解码有很好的效果.

/***************************************************************************
*   File:    sd_pap.c  -   Plug and Play
* 
*   The content of this file or document is CONFIDENTIAL and PROPRIETARY
*   to Jade Technologies Co., Ltd.  It is subject to the terms of a
*   License Agreement between Licensee and Jade Technologies Co., Ltd.
*   restricting among other things, the use, reproduction, distribution
*   and transfer.  Each of the embodiments, including this information 
*   and any derivative work shall retain this copyright notice.
* 
*   Copyright (c) 2005 Jade Technologies Co., Ltd. 
*   All rights reserved.
****************************************************************************/
#include "sd.h"

//------------------------------------------------------------------------------
// Global Variables in SD_PAP.C
//------------------------------------------------------------------------------
extern int g_CardStatus;	
extern int g_ExcCnt;
extern HANDLE IdleEvent;

//------------------------------------------------------------------------------
// 
// Inform OS that the card is inserted
//		See also: SDI_DetectStatus
//
//------------------------------------------------------------------------------
void SDI_DetectInsert(void)
{
	GUID uid = { 0xA4E7EDDA , 0xE575 , 0x4252 , 
		{0x9D, 0x6B, 0x41, 0x95,0xD4,0x8B,0xB8,0x65 } };
	RETAILMSG(1, (_T("SD: DetectInsert(*)\r\n")));
	AdvertiseInterface( &uid , L"SDI1:" , TRUE );
}

//------------------------------------------------------------------------------
//
// Inform OS that the card is removed
//		See also: SDI_DetectStatus
//
//------------------------------------------------------------------------------
void SDI_DetectRemove(void)
{
	GUID uid = { 0xA4E7EDDA , 0xE575 , 0x4252 , 
		{0x9D, 0x6B, 0x41, 0x95,0xD4,0x8B,0xB8,0x65 } };
	RETAILMSG(1, (_T("SD: DetectRemove(*)\r\n")));
	AdvertiseInterface( &uid , L"SDI1:" , FALSE );
}

//------------------------------------------------------------------------------
//
// Plug & Play Thread - created when the driver is loaded, and check the status
//		of the card. When the status changed, the routine called the two functions
//		above, to force OS open or close an instance. 
//
// Arguments:
//		controller - handle of the instance passed from the main thread. 
//
//------------------------------------------------------------------------------
unsigned long WINAPI SDI_DetectStatus(LPVOID controller)
{
	SetThreadPriority(GetCurrentThread, 100);
	if (controller == NULL)
		return 0;
	while (g_CardStatus != STATE_DEINITING)
	{
		if (g_CardStatus == STATE_OPENED)
		{
			if (!SDI_IsCardIn((SD_controller*)controller, NULL))
			{
				SDI_DetectRemove();
				WaitForSingleObject(IdleEvent, 3000);	// wait for card uninstall from FAT	
			}
		}
		else if (g_CardStatus == STATE_CLOSED || g_CardStatus == STATE_INITING)
		{
			if (SDI_IsCardIn((SD_controller*)controller, NULL))
			{
				SDI_DetectInsert();
				if (WaitForSingleObject(IdleEvent, 3000) == WAIT_TIMEOUT)	// wait for card install in FAT
				{
					if ((g_ExcCnt++) > 5)
						g_CardStatus = STATE_DEAD;
				}
			}
		}
		else if (g_CardStatus == STATE_DEAD)
		{
			RETAILMSG(1, (_T("SD: Card is DEAD\r\n")));
			break;
		}
		Sleep(2000);
	}
	g_CardStatus = STATE_DEAD;
	return 1;
}

//-----------------------------------------------------------------------------
//
// Check if the card is in the socket. 
//
// Arguments:
//		controller - handle of the instance. 
//		errorcode - record error. 
//
//------------------------------------------------------------------------------

#define SD_PNP_GPIO_NUM		5
#define SD_PNP_GPIO_PIN		4
BOOL SDI_IsCardIn(SD_controller* controller, unsigned long* errorcode)
{
	unsigned long count = 3;
	unsigned long value;
	unsigned long temp;
	OEM_IOCTL_GPIO gpio;

	if (g_CardStatus == STATE_OPENED)
	{
		temp = 1;
		while(count--)
		{
			gpio.num = SD_PNP_GPIO_NUM;	gpio.pin = SD_PNP_GPIO_PIN;	gpio.code = GPIO_Read;
			value = 0;		gpio.value = &value;
			KernelIoControl(HAL_IOCTL_GPIO , &gpio , sizeof(OEM_IOCTL_GPIO) , 0 , 0 , 0 );
			temp &= ((value>>SD_PNP_GPIO_PIN)&0x01);
			Sleep(100);
		}
	}
	else
	{
		temp = 0;
		while(count--)
		{
			gpio.num = SD_PNP_GPIO_NUM;	gpio.pin = SD_PNP_GPIO_PIN;	gpio.code = GPIO_Read;
			value = 0;		gpio.value = &value;
			KernelIoControl(HAL_IOCTL_GPIO , &gpio , sizeof(OEM_IOCTL_GPIO) , 0 , 0 , 0 );
			temp |= ((value>>SD_PNP_GPIO_PIN)&0x01);
			Sleep(100);
		}
	}
	if (temp == 1)
		return FALSE;
	else
		return TRUE;
}

//is sdcard protect
#define SD_PROTECT_GPIO_NUM		5
#define SD_PROTECT_GPIO_PIN		5
BOOL SDI_IsCardProtect(void)
{
	unsigned long count = 3;
	unsigned long value;
	unsigned long temp;
	OEM_IOCTL_GPIO gpio;

	temp = 1;
		while(count--)
		{
			gpio.num = SD_PROTECT_GPIO_NUM;	gpio.pin = SD_PROTECT_GPIO_PIN;	gpio.code = GPIO_Read;
			value = 0;		gpio.value = &value;
			KernelIoControl(HAL_IOCTL_GPIO , &gpio , sizeof(OEM_IOCTL_GPIO) , 0 , 0 , 0 );
			temp &= ((value>>SD_PROTECT_GPIO_PIN)&0x01);
			Sleep(100);
		}

                                  
	if (temp == 1)//为1则则返回错误
		return FALSE;
	else
		return TRUE;//否则则错误
}