sdconfig.h

YLP270的Windows CE5.0 bsp源码。

/**************************************************************************** 
* Name: SDCONFIG.H - HDTK tuning constants
*       
* SanDisk Host Developer's Toolkit
*
* Copyright (c) 1996-2000 SanDisk Corporation
* Copyright EBS Inc. 1996
* All rights reserved.
* This code may not be redistributed in source or linkable object form
* without the consent of its author.
*
* Description: 
*   This file is included in sdapi.h. It contains kernel specific macros 
*   and structures which must be ported to the target kernel.
*
*   It also contains tuning constants.
*                                                                            
****************************************************************************/

#ifndef __SDCONFIG__


#ifdef __cplusplus
extern "C" {
#endif




#define X86 1

/* ======================== User tunable section ========================= */


/* Number of controllers to support 1, 2, ... */
/* Currently 2 is the maximum for SanDisk ATA support. With a minor
** modification in IOCONST.C, the HDTK can support to n controllers.
**
** For SPI, this is the number of SPI controllers. Normally 1.
** For MMC, this is the number of MMC controller. Normally 1.
*/ 
#define N_CONTROLLERS   1


/* Number of devices connecting to the first controller */
/* For SPI, the number of devices varies, the max. value can be 4.
** For MMC, the number of devices varies, the max. value can be 4.
*/
#define DRIVES_PER_CONTROLLER1  1


/* Number of devices connecting to the second controller
** For SPI, the number of devices varies, the default is 0.
** For MMC, the number of devices varies, the default is 0.
*/
#define DRIVES_PER_CONTROLLER2  0

/* Total number of drives */
#define TOTAL_DRIVES       (DRIVES_PER_CONTROLLER1 + DRIVES_PER_CONTROLLER2)




/****************************************************************************/
/*************************** FILE SYTEM SECTION *****************************/
/****************************************************************************/

/*
-------------------------------------------------------------------- 
** The HDTK supports the File System or the Peripheral Bus
** Interface.  It is configurable to use the File System as a 
** way to access data at high level to SanDisk storage devices or 
** the Peripheral Bus Interface to access directly to the storage
** devices without any File System calls.
** The USE_FILE_SYSTEM is the option to allow such feature existing
** in the HDTK. The use of USE_FILE_SYSTEM is explained below.
**      USE_FILE_SYSTEM 1       Enable  the File System
**      USE_FILE_SYSTEM 0       Disable the File System
--------------------------------------------------------------------
*/ 
#define USE_FILE_SYSTEM 0       /* If 1 use the file system */


/*
-------------------------------------------------------------------- 
** If the File System is enable,  the following File System
** options are supported.
**      RTFS_SHARE
**      RTFS_SUBDIRS
**      RTFS_WRITE 
**      NUM_USERS
**      NUSERFILES 
**      NBLKBUFFS
**      FAT_BUFFER_SIZE
--------------------------------------------------------------------
*/
 
#if (USE_FILE_SYSTEM)

/* The following constants when set to 0 selectively exclude
** portions of the File System to save executable image size.
*/

/* RTFS_SHARE option allows files to be shared. It is defined as
** enable = 1 or disable = 0.
**        RTFS_SHARE      1       Enable  file sharing
**        RTFS_SHARE      0       Disable file sharing
** Note that when set to 0 to disable file share modes saves 
** about .5 K of executable image file.
*/
#define RTFS_SHARE      0


/* Sub-directory is a feature supports by the File System. Enable
** or disable this feature is done via RTFS_SUBDIR.
** RTFS_SUBDIR is defined as follows.
**        RTFS_SUBDIR     1       Enable  sub-directory support
**        RTFS_SUBDIR     0       Disable sub-directory support
** Note that set RTFS_SUBDIR to 0 to disable sub-directory support 
** saves about 2.5 K of executable image file.
*/
#define RTFS_SUBDIRS    1


/* The File System supports WRITE PROTECTED feature.  This feature
** is selected or deselected by the RTFS_WRITE option.
**   When RTFS_WRITE is set to 1,  writing to the device is permitted.
**   When RTFS_WRITE is set to zero, the File System will prevent any
**   writing to the device.
** Note that setting RTFS_WRITE to 0 to disable write support saves
** about 5.5 K of executable image file.
*/
#define RTFS_WRITE      1

/* Maximum # of tasks that may use the file system. 
** If this constant is larger than 1,  multitasking service
** must be implemented.  The File System uses MACROs in pckernel.h
** for hooking the multitasking service routines.
*/ 
#define NUM_USERS       1


/* Number of blocks in the buffer pool. Uses 532 bytes per block. 
** Impacts performance during directory traversals.  The value
** must be at least 1.  The buffer pool is shared by all drives
** in the system.  Note that higher value will improve disk
** traversal performance but also increase RAM footage.
*/
#define NBLKBUFFS       2


/* Maximum number of open files.  This is the number of simultaneous
** files that may be opened at one time.
*/
#define NUSERFILES      3      /* Maximum Number of open Files */


/* Size of the internal FAT buffer in 512 byte
** chunks (i.e. 12 = 12 * 512 bytes). We statically allocate arrays
** based on this in pc_memry.c. 
** Small values should be OK in the SanDisk environment since 
** IO is fast. Note that reducing the Buffer size will increase 
** the amount of FAT flushing. This value must be at least 1.
*/
#define FAT_BUFFER_SIZE 2


#endif  /* USE_FILE_SYSTEM */


/****************************************************************************/
/*************************** INTERFACE SECTION ******************************/
/****************************************************************************/

/*
--------------------------------------------------------------------
** There are four different Peripheral Bus Interfaces that the
** HDTK supports.  They are:
**      SPI
**      MMC
**      SPI EMULATION
**      MMC EMULATION
** There is only one Peripheral Bus Interface enabled at one time. 
** The use of these options is very simple,  either it is enabled
** by setting to 1 or disabled by setting to zero.
**      USE_SPI         1       Enable  SPI interface
**      USE_SPI         0       Disable SPI interface
**
**      USE_MMC         1       Enable  MMC interface
**      USE_MMC         0       Disable MMC interface
** and so on...
--------------------------------------------------------------------
*/
#define USE_SPI         0       /* If 1 use SPI interface */
#define USE_MMC         1       /* If 1 use MMC interface */
#define USE_SD          1       /* If 1, use SD interface */


/* if 1 use SPI or MMC Emulation */
#define USE_SPI_EMULATION       0
#define USE_MMC_EMULATION       0


#define USE_SECURITY    0

/* 
** When the Peripheral Bus Interface is selected, the following
** options are allowed you to enable different features in the
** Peripheral Bus Interface to take the advantage of SanDisk
** products.
** Note that these options are available depending on the Peripheral
** Bus Interface, and may have different meanings.
**      USE_MEMMODE
**      USE_CONTIG_IO 
**      USE_HW_OPTION   ***for Motorola ATA environment ONLY***
**      WORD_ACCESS_ONLY  
**      USE_INTERRUPTS
**      USE_ONLY_LBA
**      USE_MULTI
**      USE_SET_FEATURES
**      PREERASE_ON_DELETE
**      PREERASE_ON_ALLOC
**      PREERASE_ON_FORMAT
*/ 

/* The USE_MEMMODE provides a way to configure the HDTK in memory
** mapped or IO mapped mode of your platform. The use of USE_MEMMODE
** is shown below:
**      USE_MEMMODE     1       Enable memory mapped mode.
**      USE_MEMMODE     0       Select IO mapped mode.
*/
#define USE_MEMMODE     0       /* if 1 use memory mapped mode Else IO */ 


/* The USE_CONTIG_IO allows the HDTK to map the ATA Task File Registers
** in any selected contiguous 16 byte IO address spaces.
** The definition of USE_CONTIG_IO is described as follows:
**
**      USE_CONTIG_IO   1       Allow IO accessing in any 16-byte
**                               contiguous IO address spaces.
**      USE_CONTIG_IO   0       IO accessing in 2 different IO regions.
**                              For example,
**                                Standard PC-AT IDE disk IO address spaces:
**                                1F0h-1F7h, 3F6-3F7 (Primary   IO) 
**                                170h-177h, 376-377 (Secondary IO)
*/
#define USE_CONTIG_IO   0       /* if 1 use 16-byte contiguous register range */ 

/*
NOTE: In Big Endian(Motorola), 16-bit data bus SHOULD be swapped for ATA environment.
       Card D15-D8=Host D7-D0 and Card D7-D0=Host D15-D8.
*/
#define USE_HW_OPTION   0       /* Must be set to 1 for Motorola ATA environment */


/* In IO Mode, the WORD_ACCESS_ONLY is valid for Data Register accessing only.
** If set, selected WORD Data Register accessing; otherwise, BYTE accessing.
**
** In Memory Mapped Mode, the WORD_ACCESS_ONLY selects Word accessing to
** ALL Task File Registers.
** If set, selected WORD Task File Register accessing; otherwise, BYTE mode.
*/
#define WORD_ACCESS_ONLY        1       /* if 1 Word accessing else Byte */



/* This option supports data handler or event management interrupts.
**      0 to use polling mode.
**      1 to use interrupt mode for both data and event handlers.
*/
#define USE_INTERRUPTS  0       /* If 1 use interrupt mode, else polling */


/* This option selects different addressing scheme.
**      1 use only LBA (Logical Block Addressing),
**      0 CHS (Cylinder, Head, Sector Addressing).
** Since SanDisk products is configured in LBA mode,  the default for
** this option is 1.
*/
#define USE_ONLY_LBA    1


/* This constant when set, enable Read and Write Multiple Commands
**      0       Disable write multiple command.
**      1       Enable write multiple command.
** NOTE: SanDisk supports one sector per block max, so there is no gain.
*/
#define USE_MULTI       1


/* This option allows the use of SanDisk proprietary Set Feature Command.
**      0       Disable SanDisk Set Feature Command.
**      1       Enable Sandisk Set Feature Command.
**  (tradeoff between current drawn and read/write speed)
**  Refer to SanDisk Product Manual for detail of tradeoff.
**  If this option is set to 1, then the IDE_FEATURE_SETPERF_VALUE in
**  ATADRV.H should also be set accordingly for the tradeoff.
*/
#define USE_SET_FEATURES        0
/*
#if ( USE_SD && (USE_SPI || USE_SPI_EMULATION) ) 
#undef USE_SET_FEATURES
#define USE_SET_FEATURES        1
#endif
*/

/* If 1, pre-erase sectors when files are deleted. */
#define PREERASE_ON_DELETE      0


/* If 1, pre-erase allocated clusters when files are extended. */
#define PREERASE_ON_ALLOC       0


/* If 1, pre-erase sectors when volume is formatted. */
#define PREERASE_ON_FORMAT      0