zlg_fs_sd.c

三星2410在linux下的SD卡驱动

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                     graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			zlg_fs_driver.c
** Last modified Date:  2005-05-27
** Last Version:		1.0
** Descriptions:		This is a Kernel module for uClinux 2.4.x .
**                      This module let uClinux 2.4.x can use ZLG/DRIVER . 
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2005-05-27
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**

********************************************************************************************************/
#define IN_ZLG_FS_DRIVER
#include "config.h"

/********************************************************************************************************
              function announce
********************************************************************************************************/
int  zlg_fs_driver_init(void);
void zlg_fs_driver_cleanup(void);

/********************************************************************************************************
              define announce
********************************************************************************************************/
module_init(zlg_fs_driver_init);
module_exit(zlg_fs_driver_cleanup);

MODULE_LICENSE("Proprietary");
MODULE_DESCRIPTION("Guangzou ZLG-MCU Development Co.,LTD.\ngraduate school\nhttp://www.zlgmcu.com");
MODULE_SUPPORTED_DEVICE("uClinux2.4.x LPC2200 " DEVICE_NAME);
MODULE_AUTHOR("chenmingji");

/*********************************************************************************************************
**                  "全局和静态变量在这里定义"         
**        global variables and static variables define here
********************************************************************************************************/
static fs_drivers zlg_driver_driver[MAX_DISK_DRIVES];

/*********************************************************************************************************
** Function name: zlg_fs_driver_open
** Descriptions: open device
** Input:inode:  information of device
**       filp:   pointer of file
** Output 0:     OK
**        other: not OK
** Created by:   Chenmingji
** Created Date: 2005-05-27
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static int  zlg_fs_driver_get_info(struct _zlg_driver_Info *Disk)
{
    Disk_RW_Parameter dp;
    
    dp.RsvdForLow = Disk->RsvdForLow;

    dp.SectorIndex = DISK_GET_BYTES_PER_SECTOR;
    if (Disk->DiakCommand(DISK_CHECK_CMD, &dp) == DISK_TRUE)
    {
        Disk->DiakCommand(DISK_GET_BYTES_PER_SECTOR, &dp);
        Disk->BytesPerSec = dp.SectorIndex;
    }
    else
    {
        Disk->BytesPerSec = DEVICE_BYTES_PER_SEC;
    }
    
    dp.SectorIndex = DISK_GET_SECTOR_NUMBER;
    if (Disk->DiakCommand(DISK_CHECK_CMD, &dp) == DISK_TRUE)
    {
        Disk->DiakCommand(DISK_GET_SECTOR_NUMBER, &dp);
        Disk->SecPerDisk = dp.SectorIndex;
    }
    else
    {
        Disk->SecPerDisk = DEVICE_SEC_PER_DISK;
    }
    return 0;          /* success */
} 

/*********************************************************************************************************
** Function name: zlg_fs_driver_open
** Descriptions: open device
** Input:inode:  information of device
**       filp:   pointer of file
** Output 0:     OK
**        other: not OK
** Created by:   Chenmingji
** Created Date: 2005-05-27
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static int  zlg_fs_driver_open(struct inode *inode, struct file *filp)
{
    MOD_INC_USE_COUNT;
    return 0;          /* success */
} 

/*********************************************************************************************************
** Function name: zlg_fs_driver_release
** Descriptions: release device
** Input:inode:  information of device
**       filp:   pointer of file
** Output 0:     OK
**        other: not OK
** Created by:   Chenmingji
** Created Date: 2005-05-27
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static int  zlg_fs_driver_release(struct inode *inode, struct file *filp) 
{
    MOD_DEC_USE_COUNT;
    return 0; 
} 
/*********************************************************************************************************
** Function name: zlg_fs_driver_init
** Descriptions: init driver
** Input:none
** Output 0:     OK
**        other: not OK
** Created by:   Chenmingji
** Created Date: 2005-05-27
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        int  zlg_fs_driver_init(void)
{
    int i;
    
    drive_init();

    for (i = 0; i < MAX_DISK_DRIVES; i++)
    {
#ifdef DISK_INFO
        zlg_driver_driver[i].RsvdForLow = &(DISK_INFO[i]);
#else
        zlg_driver_driver[i].RsvdForLow = NULL;
#endif
        zlg_driver_driver[i].DiakCommand = COMMAND_FUNCTION;
        zlg_driver_driver[i].open = zlg_fs_driver_open;
        zlg_driver_driver[i].release = zlg_fs_driver_release;
        zlg_driver_driver[i].get_info = zlg_fs_driver_get_info;
        zlg_fs_add_driver(&(zlg_driver_driver[i]));
    }

    printk(KERN_INFO DEVICE_NAME ": init OK\n");
    return(0); 
}

/*********************************************************************************************************
** Function name: zlg_fs_driver_cleanup
** Descriptions: exit driver
** Input:none
** Output none
** Created by:   Chenmingji
** Created Date: 2005-05-27
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        void zlg_fs_driver_cleanup(void)
{
    int i;

    for (i = 0; i < MAX_DISK_DRIVES; i++)
    {
        zlg_fs_remove_driver(&(zlg_driver_driver[i]));
    }
    
    drive_clean();
}


/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/