drive.h

intel xscale pxa270的完整wince4.2 BSP包

/*****************************************************************************
* Filename: drive.h  -  Controller structure information
*
* SanDisk Host Developer's Toolkit
*
* Copyright (c) 1997 - 1998 SanDisk Corporation
* All rights reserved.
* This code may not be redistributed in source or linkable object form
* without the consent of its author.
*
* Description:
*       Portable Peripheral Bus Interface Device driver.
*
******************************************************************************/

#ifndef _DRIVE_H_

#include "sdtypes.h"
#include "sdconfig.h"


#ifdef __cplusplus
extern "C" {
#endif



/* NOT intended to be CHANGED by user */
#define USE_PREERASE_SECTORS    (PREERASE_ON_DELETE|PREERASE_ON_ALLOC|PREERASE_ON_FORMAT)


/* Don't allow more then 128 blocks (64K) for fear of a segment wrap. */
#define MAX_BLOCKS  128


/* Device features */
#define LBA_YES         YES     /* supported LBA mode only */
#define LBA_NO          NO      /* Not supported LBA mode */
#define SDSET_WIDE_BUS  0x02    /* Wide bus supported */


/* Current active device flag */
#define DRV_ACTIVE      0x8000

/* First drive */
#define FIRST_DRIVE     0

#define  N_INTERFACES  N_CONTROLLERS

/* Internal READ, WRITE, ERASE Command operations */
#define READING 1
#define WRITING 2
#define ERASING 3


/* drive_control structure - We use this abstraction to manage the driver. 
    Structure contents:
        .  drive description. logical drive structure (heads/secptrak/secpcyl)
        .  virtual registers: These aren't (can't be) mapped onto the
        the controller but we use virtual representation on the
        register file to drive the system.
        .  virtual output register file (to drive) - We load the registers
        and then ask lower level code to send the command block to the 
        controller.
        .  virtual input register file (from drive) - We offload the register
        file from the drive into these fields after a command complete.
        Note: We only offload the whole register file in certain cases.
            The status register is always offloaded. 
*/

/* The control structure contains one of these per drive [2]. We set this
    up at init time after issueing SET_PARAMS. The values are used to convert
    block number to track:head:sector
*/
typedef struct drive_desc
{
    ULONG       total_lba;
    UINT16      num_heads;
    UINT16      sec_p_track;
    UINT16      num_cylinders;
    UINT16      block_size;
        UINT16      features;           /* BIT0 = LBA, BIT1 = Wide bus */
#if (USE_TRUE_IDE || USE_PCMCIA)
    UINT16      max_multiple;
#else
        UINT16      RCA;                /* Relative card address */
        UINT32      drv_type;           /* Card type - SPI, MMC, SD etc. */
 #if (USE_SD)
        UINT32      securedAreaSize;
        UINT16      securityDrv;
        UINT16      busWidth;
        UINT16      erasedSize;
 #endif
#endif
} DRIVE_DESC, *PDRIVE_DESC;


typedef struct drive_control
{
    /* Geometry of the drives */
    PDRIVE_DESC drive;
    USERADDRESS user_address;/* Pointer address of the user's buffer */

    /* Address of the controller in memory or IO mode */
#if (USE_MEMMODE)
    FPTR    register_file_address;
#else
    UINT16 register_file_address;
#endif
    SDBOOL command_complete;  /* Set when operation is complete */
    UINT16 opencount;
    INT16 interrupt_number; /* -1 if not being used */
    COUNT controller_number;

    UINT16 error_code;      /* Set if an error occured - This is 
                   the error reported to the user.
                */
    UINT16 timer;           /* Command fails if this much time elapsed */
    UINT16 block_size;      /* Block size for read/write multiple cmds */
    UCOUNT sectors_remaining;/* Sectors remaining for read/write mult */
    INT16 drive_active;     /* Current active drive */
        UINT16 mode;            /* Single or multiple transfer */
        UINT16 currentState;    /* Current MMC state */
        UINT16 mmcRdyState;     /* Card BUSY/READY state */
    UINT16 tempData;
        UINT16 LastResponse[8]; /* Response data */
        UINT32 mmcStatus;       /* Card status */
} DEVICE_CONTROLLER, *PDEVICE_CONTROLLER;



/* INTERFACE_DATA_STRUCT is defined in IOCONST.C */
/* This flag is needed for some compilers to avoid seeing the following
*  declarations as redefinition.
*/
#ifndef INTERFACE_DATA_STRUCT

/* Allocate space for controllers in the system */
#if (N_INTERFACES)
/* Device control structure information */
 SDIMPORT DEVICE_CONTROLLER controller_s[N_INTERFACES];
 SDIMPORT INT16 drvs_per_controller[N_INTERFACES];
 SDIMPORT UCHAR *drive_ptr[N_INTERFACES];
#endif


/* Allocate space for devices connecting to the first controller */
#if (DRIVES_PER_CONTROLLER1 > 0)
SDIMPORT DRIVE_DESC ddrive1[DRIVES_PER_CONTROLLER1];
#endif


/* Allocate space for devices connecting to the second controller */
#if (DRIVES_PER_CONTROLLER2 > 0)
SDIMPORT DRIVE_DESC ddrive2[DRIVES_PER_CONTROLLER2];
#endif


#if (USE_MEMMODE)
SDIMPORT const ULONG mem_mapped_addresses[N_INTERFACES]; 
SDIMPORT const FPTR mem_mapped_addresses_pointer[N_INTERFACES];
#else
SDIMPORT const UINT16 io_mapped_addresses[N_INTERFACES];
#endif

#if (USE_INTERRUPTS)
SDIMPORT const INT16 dev_interrupts[N_INTERFACES];
#endif

#endif  /* INTERFACE_DATA_STRUCT */

UINT16 multipleRdWr;

/* For multiple controllers */
#if (N_INTERFACES > 1)
INT16 drno_to_controller_no(INT16 driveno);
PDEVICE_CONTROLLER drno_to_controller(INT16 driveno);
INT16 drno_to_phys(INT16 driveno);
INT16 get_controller_number(INT16 driveno);
/* INT16 controller_to_drvno(INT16 controllerno); */
#endif

/* Controller structure Initialization */
SDVOID clear_controller_structure(SDVOID);


#if (USE_FILE_SYSTEM)
SDVOID system_controller_init(INT16 driveno);
SDVOID system_controller_close(INT16 driveno);

SDIMPORT UINT16 *lock_temporary_buffer(SDVOID);
SDIMPORT SDVOID release_temporary_buffer(SDVOID);
#endif



#ifdef __cplusplus
}
#endif


#define _DRIVE_H_

#endif