1571 lines
61 KiB
C
1571 lines
61 KiB
C
/*
|
||
* $Log: P:/user/amir/lite/vcs/nfdc2048.c_v $
|
||
*
|
||
* Rev 1.28 19 Oct 1997 15:41:54 danig
|
||
* Changed tffscpy16 and tffsset16 for far pointers &
|
||
* cast to FAR0 in mapContInterface
|
||
*
|
||
* Rev 1.27 06 Oct 1997 18:37:34 ANDRY
|
||
* no COBUX
|
||
*
|
||
* Rev 1.26 06 Oct 1997 18:04:34 ANDRY
|
||
* 16-bit access only for interleave 2 cards, COBUX
|
||
*
|
||
* Rev 1.25 05 Oct 1997 12:02:32 danig
|
||
* Support chip ID 0xEA
|
||
*
|
||
* Rev 1.24 10 Sep 1997 16:14:08 danig
|
||
* Got rid of generic names
|
||
*
|
||
* Rev 1.23 08 Sep 1997 17:47:00 danig
|
||
* fixed setAddress for big-endian
|
||
*
|
||
* Rev 1.22 04 Sep 1997 13:59:44 danig
|
||
* Debug messages
|
||
*
|
||
* Rev 1.21 31 Aug 1997 15:18:04 danig
|
||
* Registration routine return status
|
||
*
|
||
* Rev 1.20 28 Aug 1997 17:47:08 danig
|
||
* Buffer\remapped per socket
|
||
*
|
||
* Rev 1.19 28 Jul 1997 15:10:36 danig
|
||
* setPowerOnCallback & moved standard typedefs to flbase.h
|
||
*
|
||
* Rev 1.18 24 Jul 1997 18:04:12 amirban
|
||
* FAR to FAR0
|
||
*
|
||
* Rev 1.17 21 Jul 1997 18:56:00 danig
|
||
* nandBuffer static
|
||
*
|
||
* Rev 1.16 20 Jul 1997 18:21:14 danig
|
||
* Moved vendorID and chipID to Vars
|
||
*
|
||
* Rev 1.15 20 Jul 1997 17:15:06 amirban
|
||
* Added Toshiba 8MB
|
||
*
|
||
* Rev 1.14 07 Jul 1997 15:22:26 amirban
|
||
* Ver 2.0
|
||
*
|
||
* Rev 1.13 02 Jul 1997 14:59:22 danig
|
||
* More wait for socket to power up
|
||
*
|
||
* Rev 1.12 01 Jul 1997 13:39:54 danig
|
||
* Wait for socket to power up
|
||
*
|
||
* Rev 1.11 22 Jun 1997 18:34:32 danig
|
||
* Documentation
|
||
*
|
||
* Rev 1.10 12 Jun 1997 17:22:24 amirban
|
||
* Allow LONG extra read/writes
|
||
*
|
||
* Rev 1.9 08 Jun 1997 19:18:06 danig
|
||
* BIG_PAGE & FULL_PAGE moved to flash.h
|
||
*
|
||
* Rev 1.8 08 Jun 1997 17:03:40 amirban
|
||
* Fast Toshiba and power on callback
|
||
*
|
||
* Rev 1.7 05 Jun 1997 12:31:38 amirban
|
||
* Write corrections, and att reg changes
|
||
*
|
||
* Rev 1.6 03 Jun 1997 18:45:14 danig
|
||
* powerUp()
|
||
*
|
||
* Rev 1.5 01 Jun 1997 13:42:52 amirban
|
||
* Rewrite of read/write extra + major reduction
|
||
*
|
||
* Rev 1.4 25 May 1997 16:41:38 amirban
|
||
* Bg-endian, Toshiba fix & simplifications
|
||
*
|
||
* Rev 1.3 18 May 1997 17:34:50 amirban
|
||
* Use 'dataError'
|
||
*
|
||
* Rev 1.2 23 Apr 1997 11:02:14 danig
|
||
* Update to TFFS revision 1.12
|
||
*
|
||
* Rev 1.1 15 Apr 1997 18:48:02 danig
|
||
* Fixed FAR pointer issues.
|
||
*
|
||
* Rev 1.0 08 Apr 1997 18:29:28 danig
|
||
* Initial revision.
|
||
*/
|
||
|
||
/************************************************************************/
|
||
/* */
|
||
/* FAT-FTL Lite Software Development Kit */
|
||
/* Copyright (C) M-Systems Ltd. 1995-1997 */
|
||
/* */
|
||
/************************************************************************/
|
||
|
||
#include "ntddk.h"
|
||
|
||
#include "flflash.h"
|
||
#include "reedsol.h"
|
||
|
||
#define NFDC2048 /* Support NFDC2048 ASIC controller */
|
||
|
||
#define MAX_FLASH_DEVICES 16
|
||
|
||
#define PAGES_PER_BLOCK 16 /* 16 pages per block on a single chip*/
|
||
#define SYNDROM_BYTES 6 /* Number of syndrom bytes: 5 + 1 parity*/
|
||
|
||
/* Flash IDs*/
|
||
#define KM29N16000_FLASH 0xec64
|
||
#define KM29N32000_FLASH 0xece5
|
||
#define KM29V64000_FLASH 0xece6
|
||
#define KM29V128000_FLASH 0xec73
|
||
#define KM29V256000_FLASH 0xec75
|
||
#define NM29N16_FLASH 0x8f64
|
||
#define NM29N32_FLASH 0x8fe5
|
||
#define NM29N64_FLASH 0x8fe6
|
||
#define TC5816_FLASH 0x9864
|
||
#define TC5832_FLASH 0x98e5
|
||
#define TC5864_FLASH 0x98e6
|
||
#define TC58128_FLASH 0x9873
|
||
#define TC58256_FLASH 0x9875
|
||
|
||
/* Flash commands:*/
|
||
#define SERIAL_DATA_INPUT 0x80
|
||
#define READ_MODE 0x00
|
||
#define READ_MODE_2 0x50
|
||
#define RESET_FLASH 0xff
|
||
#define SETUP_WRITE 0x10
|
||
#define SETUP_ERASE 0x60
|
||
#define CONFIRM_ERASE 0xd0
|
||
#define READ_STATUS 0x70
|
||
#define READ_ID 0x90
|
||
#define SUSPEND_ERASE 0xb0
|
||
#define REGISTER_READ 0xe0
|
||
|
||
/* commands for moving flash pointer to areeas A,B or C of page*/
|
||
typedef enum { AREA_A = READ_MODE, AREA_B = 0x1, AREA_C = READ_MODE_2 } PointerOp;
|
||
|
||
typedef union { USHORT w ; UCHAR b ; } WordByte;
|
||
|
||
|
||
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
||
<20> Memory window to cards common memory <20>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
|
||
|
||
typedef struct
|
||
{
|
||
volatile WordByte signals; /* CDSN control register*/
|
||
|
||
#define CE 0x01
|
||
#define CLE 0x02
|
||
#define ALE 0x04
|
||
#define NOT_WP 0x08
|
||
#define RB 0x80
|
||
|
||
#define FAIL 0x01
|
||
#define SUSPENDED 0x20
|
||
#define READY 0x40
|
||
#define NOT_PROTECTED 0x80
|
||
|
||
UCHAR fillerA[1024 - sizeof(WordByte)];
|
||
volatile LEushort deviceSelector;
|
||
volatile WordByte eccConfig; /* EDC configuration register*/
|
||
|
||
#define TOGGLE 0x04 /* Read*/
|
||
#ifdef NFDC2048
|
||
#define ECC_RST 0x04 /* Write*/
|
||
#define ECC_EN 0x08 /* Read / Write*/
|
||
#define PAR_DIS 0x10 /* Read / Write*/
|
||
#define ECC_RW 0x20 /* Read / Write*/
|
||
#define ECC_RDY 0x40 /* Read */
|
||
#define ECC_ERROR 0x80 /* Read*/
|
||
|
||
volatile USHORT syndrom[3];
|
||
UCHAR fillerC[1024-10]; /* 1kbytes minus 10 bytes*/
|
||
#else
|
||
UCHAR fillerC[1024-4]; /* 1kbytes minus 3 words */
|
||
#endif /* NFDC2048 */
|
||
volatile WordByte io[1024];
|
||
} ContComWin;
|
||
|
||
/* #defines for writing to ContComWin.eccConfig */ /* HOOK - added */
|
||
#define SET_ECC_CONFIG(win,val) tffsWriteByteFlash(&((win)->eccConfig.b), (UCHAR)(val))
|
||
#define CHK_ECC_ERROR(win) (tffsReadByteFlash(&((win)->eccConfig.b)) & (UCHAR)ECC_ERROR)
|
||
|
||
typedef ContComWin FAR0 * Interface;
|
||
|
||
#define DBL(x) ( (UCHAR)(x) * 0x101u )
|
||
#define SECOND_TRY 0x8000
|
||
|
||
#ifdef NFDC2048
|
||
|
||
/* Controller registers: Addresses & values */
|
||
|
||
#define ATTRIBUTE_MEM_START 0x8000000L /* Attribute memory starts at 128MB */
|
||
|
||
/* Controller configuration register */
|
||
#define CONFIG1 ATTRIBUTE_MEM_START + 0x3ffc
|
||
|
||
#define PWR_DN 0x01 /* Read / Write*/
|
||
#define PWR_DN2 0x02 /* Read / Write*/
|
||
#define STOP_CDSN 0x04 /* Read / Write*/
|
||
#define STOP_CDSNS 0x08 /* Read / Write*/
|
||
#define C_CDSN 0x10 /* Read / Write*/
|
||
#define R_CDSN 0x20 /* Read / Write*/
|
||
#define WP_C 0x40 /* Read / Write*/
|
||
#define WP_A 0x80 /* Read / Write*/
|
||
|
||
/* board's jumper settings*/
|
||
#define JUMPERS ATTRIBUTE_MEM_START + 0x3ffe
|
||
|
||
#define JMPER_INLV 0x08
|
||
#define JMPER_CDSNS 0x10
|
||
#define JMPER_EXT_CIS 0x20
|
||
#define JMPER_LDR_MASK 0x40
|
||
#define JMPER_MAX_MODE 0x80
|
||
|
||
/* PCMCIA register #0*/
|
||
#define CONFIG_OPTION ATTRIBUTE_MEM_START + 0x4000
|
||
|
||
#define CONFIGIDX 0x3F /* Read / Write*/
|
||
#define SREST 0x80 /* Read / Write*/
|
||
|
||
/* PCMCIA register #1*/
|
||
#define CARD_CONFIG ATTRIBUTE_MEM_START + 0x4002
|
||
|
||
#define PWRDWN 0x04 /* Read / Write*/
|
||
|
||
#else
|
||
|
||
#define INLV 2 /* Must define interleaving statically */
|
||
|
||
#endif /* NFDC2048 */
|
||
|
||
/* customization for this MTD*/
|
||
/*#define MULTI_ERASE */ /* use multiple block erase feature*/
|
||
#define USE_EDC /* use Error Detection /Correction Code */
|
||
/* #define VERIFY_AFTER_WRITE */
|
||
|
||
typedef struct {
|
||
USHORT vendorID;
|
||
USHORT chipID;
|
||
USHORT pageSize ; /* all....................*/
|
||
USHORT pageMask ; /* ...these...............*/
|
||
USHORT pageAreaSize ; /* .......variables.......*/
|
||
USHORT tailSize ; /* .............interleave*/
|
||
USHORT noOfBlocks ; /* total erasable blocks in flash device*/
|
||
USHORT pagesPerBlock; /* number of pages per block */
|
||
FLBuffer *buffer; /* buffer for map through buffer */
|
||
} Vars;
|
||
|
||
Vars mtdVars_nfdc2048[SOCKETS];
|
||
|
||
#define thisVars ((Vars *) vol.mtdVars)
|
||
#define thisBuffer (thisVars->buffer->flData)
|
||
|
||
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
||
<20> Auxiliary methods <20>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* t f f s c p y 1 6 */
|
||
/* */
|
||
/* Move data in 16-bit words. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* dst : destination buffer */
|
||
/* src : source buffer */
|
||
/* len : bytes to move */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID tffscpy16fromMedia (UCHAR FAR0 *dst,
|
||
const UCHAR FAR0 *src,
|
||
LONG len)
|
||
{
|
||
register LONG i;
|
||
USHORT FAR0 *dstPtr = (USHORT FAR0 *) dst;
|
||
const USHORT FAR0 *srcPtr = (USHORT FAR0 *) src;
|
||
|
||
/* move data in 16-bit words */
|
||
for (i = len; i > 0; i -= 2)
|
||
*dstPtr++ = tffsReadWordFlash(srcPtr++);
|
||
}
|
||
|
||
VOID tffscpy16toMedia (UCHAR FAR0 *dst,
|
||
const UCHAR FAR0 *src,
|
||
LONG len)
|
||
{
|
||
register LONG i;
|
||
USHORT FAR0 *dstPtr = (USHORT FAR0 *) dst;
|
||
const USHORT FAR0 *srcPtr = (USHORT FAR0 *) src;
|
||
|
||
/* move data in 16-bit words */
|
||
for (i = len; i > 0; i -= 2)
|
||
tffsWriteWordFlash(dstPtr++,*srcPtr++);
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* t f f s s e t 1 6 */
|
||
/* */
|
||
/* Set data buffer in 16-bit words. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* dst : destination buffer */
|
||
/* val : byte value tofill the buffer */
|
||
/* len : setination buffer size in bytes */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID tffsset16 (UCHAR FAR0 *dst,
|
||
UCHAR val,
|
||
LONG len)
|
||
{
|
||
register USHORT wval = ((USHORT)val << 8) | val;
|
||
register LONG i = 0;
|
||
USHORT FAR0 *dstPtr;
|
||
|
||
/* set data in 16-bit words */
|
||
for (i = 0; i < len - 1; i += 2) {
|
||
dstPtr = (USHORT FAR0 *)addToFarPointer(dst, i);
|
||
tffsWriteWordFlash(dstPtr,wval);
|
||
}
|
||
|
||
/* set last byte (if any) */
|
||
if (len & 1) {
|
||
dstPtr = (USHORT FAR0 *)addToFarPointer(dst, len - 1);
|
||
tffsWriteByteFlash(dstPtr,wval);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
#ifdef NFDC2048
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d S y n d r o m */
|
||
/* */
|
||
/* Read ECC syndrom and swap words to prepare it for writing to flash. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* Interface : Pointer to window. */
|
||
/* to : buffer to read to. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID readSyndrom_nfdc2048( Interface interface, USHORT *to )
|
||
{
|
||
to[0] = tffsReadWordFlash(&(interface->syndrom[2]));
|
||
to[1] = tffsReadWordFlash(&(interface->syndrom[1]));
|
||
to[2] = tffsReadWordFlash(&(interface->syndrom[0]));
|
||
}
|
||
|
||
#ifdef USE_EDC
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d S y n d r o m O n S y n d r o m */
|
||
/* */
|
||
/* Read ECC syndrom. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* Interface : Pointer to window. */
|
||
/* to : buffer to read to. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID readSyndromOnSyndrom ( Interface interface, USHORT *to )
|
||
{
|
||
to[0] = tffsReadWordFlash(&(interface->syndrom[0]));
|
||
to[1] = tffsReadWordFlash(&(interface->syndrom[1]));
|
||
to[2] = tffsReadWordFlash(&(interface->syndrom[2]));
|
||
}
|
||
|
||
#endif /* USE_EDC */
|
||
|
||
|
||
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
||
<20> Miscellaneous routines <20>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* g e t A t t R e g */
|
||
/* */
|
||
/* Get ASIC register residing in card's Attribute memory. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address of register. */
|
||
/* */
|
||
/* Returns: */
|
||
/* Value of register. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
UCHAR getAttReg(FLFlash vol, CardAddress reg)
|
||
{
|
||
return (UCHAR) (tffsReadByteFlash((USHORT FAR0 *) flMap(vol.socket,reg)));
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* s e t A t t R e g */
|
||
/* */
|
||
/* Set ASIC register residing in card's Attribute memory. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address of register. */
|
||
/* value : Value to set */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID setAttReg(FLFlash vol, CardAddress reg, UCHAR value)
|
||
{
|
||
tffsWriteWordFlash((USHORT FAR0 *) flMap(vol.socket,reg), DBL(value));
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* p o w e r U p */
|
||
/* */
|
||
/* Power up the controller. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID powerUp(VOID *pVol)
|
||
{
|
||
flDelayMsecs(1);
|
||
setAttReg ((FLFlash *) pVol, CONFIG1, WP_C); /* Power up the controller */
|
||
}
|
||
|
||
#endif /* NFDC2048 */
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* m a p C o n t I n t e r f a c e */
|
||
/* */
|
||
/* Select flash device. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address in flash. */
|
||
/* */
|
||
/* Returns: */
|
||
/* Pointer to the mapped window. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
Interface mapContInterface(FLFlash vol, CardAddress address)
|
||
{
|
||
Interface interface = (Interface) flMap(vol.socket,(CardAddress)0);
|
||
LEushort tmp;
|
||
|
||
toLE2(*((LEushort FAR0 *) &tmp), (USHORT)(address / (vol.chipSize * vol.interleaving)));
|
||
|
||
/* Select flash device with 16-bit write */
|
||
tffsWriteWordFlash(((USHORT FAR0 *) &interface->deviceSelector), *((USHORT *) &tmp));
|
||
|
||
return interface;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* w a i t F o r R e a d y */
|
||
/* */
|
||
/* Wait for the selected device to be ready. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* Interface : Pointer tot the window. */
|
||
/* */
|
||
/* Returns: */
|
||
/* TRUE if device is ready, FALSE if timeout error. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLBoolean waitForReady_nfdc2048 (Interface interface)
|
||
{
|
||
LONG i;
|
||
|
||
for( i = 0; i < 20000; i++)
|
||
{
|
||
if( (~(tffsReadWordFlash(&(interface->signals.w))) & DBL(RB)) == 0)
|
||
return TRUE ; /* ready at last..*/
|
||
flDelayMsecs(1);
|
||
}
|
||
|
||
DEBUG_PRINT(("Debug: timeout error in NFDC 2048.\n"));
|
||
|
||
return FALSE; /* timeout error */
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* m a k e C o m m a n d */
|
||
/* */
|
||
/* Set Page Pointer to Area A, B or C in page. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* cmd : receives command relevant to area */
|
||
/* addr : receives the address to the right area. */
|
||
/* modes : mode of operation (EXTRA ...) */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID makeCommand_nfdc2048 (FLFlash vol, PointerOp *cmd, CardAddress *addr , LONG modes )
|
||
{
|
||
USHORT offset;
|
||
|
||
if ( !(vol.flags & BIG_PAGE) ) {
|
||
if (modes & EXTRA) {
|
||
offset = (USHORT) (*addr & (SECTOR_SIZE - 1));
|
||
*cmd = AREA_C;
|
||
if (vol.interleaving == 1) {
|
||
if (offset < 8) /* First half of extra area */
|
||
*addr += 0x100; /* ... assigned to 2nd page */
|
||
else /* Second half of extra area */
|
||
*addr -= 8; /* ... assigned to 1st page */
|
||
}
|
||
}
|
||
else
|
||
*cmd = AREA_A;
|
||
}
|
||
else {
|
||
offset = (USHORT)(*addr) & thisVars->pageMask ; /* offset within device Page */
|
||
|
||
*addr -= offset; /* align at device Page*/
|
||
|
||
if (vol.interleaving == 2 && offset >= 512)
|
||
offset += 16; /* leave room for 1st extra area */
|
||
if (modes & EXTRA)
|
||
offset += SECTOR_SIZE;
|
||
|
||
if ( offset < thisVars->pageAreaSize ) /* starting in area A*/
|
||
*cmd = AREA_A ;
|
||
else if ( offset < thisVars->pageSize ) /* starting in area B */
|
||
*cmd = AREA_B ;
|
||
else /* got into area C*/
|
||
*cmd = AREA_C ;
|
||
|
||
offset &= (thisVars->pageAreaSize - 1) ; /* offset within area of device Page*/
|
||
*addr += offset ;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c o m m a n d */
|
||
/* */
|
||
/* Latch command byte to selected flash device. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* Interface : Pointer to window. */
|
||
/* code : Command to set. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID command2048(FLFlash vol, Interface interface, UCHAR code)
|
||
{
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL( CLE | NOT_WP | CE ));
|
||
|
||
if ( vol.interleaving == 1 ) { /* 8-bit */
|
||
tffsWriteByteFlash(&(interface->io[0].b), code);
|
||
} else { /* 16-bit */
|
||
tffsWriteWordFlash(&(interface->io[0].w), DBL( code ));
|
||
}
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL( NOT_WP ));
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* s e t A d d r e s s */
|
||
/* */
|
||
/* Latch address to selected flash device. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* Interface : Pointer to window. */
|
||
/* address : address to set. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID setAddress2048(FLFlash vol, Interface interface, CardAddress address )
|
||
{
|
||
address &= (vol.chipSize * vol.interleaving - 1) ; /* address within flash device*/
|
||
address /= vol.interleaving ; /* .................... chip */
|
||
|
||
if ( vol.flags & BIG_PAGE )
|
||
{
|
||
/*
|
||
bits 0..7 stays as are
|
||
bit 8 is thrown away from address
|
||
bits 31..9 -> bits 30..8
|
||
*/
|
||
address = ((address >> 9) << 8) | ((UCHAR)address) ;
|
||
}
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(ALE | NOT_WP | CE));
|
||
|
||
/* send address to flash in the following sequence: */
|
||
/* bits 7...0 first */
|
||
/* bits 15...8 next */
|
||
/* bits 23..16 finally */
|
||
if ( vol.interleaving == 1 )
|
||
{
|
||
tffsWriteByteFlash(&(interface->io[0].b), (UCHAR)address );
|
||
tffsWriteByteFlash(&(interface->io[0].b), (UCHAR)(address >> 8));
|
||
tffsWriteByteFlash(&(interface->io[0].b), (UCHAR)(address >> 16));
|
||
}
|
||
else
|
||
{
|
||
tffsWriteWordFlash(&(interface->io[0].w), (USHORT)DBL(address));
|
||
tffsWriteWordFlash(&(interface->io[0].w), (USHORT)DBL(address >> 8));
|
||
tffsWriteWordFlash(&(interface->io[0].w), (USHORT)DBL(address >> 16));
|
||
}
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL( NOT_WP | CE));
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d C o m m a n d */
|
||
/* */
|
||
/* Issue read command. */
|
||
/* */
|
||
/* Parametes: */
|
||
/* vol : Pointer identifying drive */
|
||
/* Interface : Pointer to window. */
|
||
/* cmd : Command to issue (according to area). */
|
||
/* addr : address to read from. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID readCommand2048 (FLFlash vol, Interface interface, PointerOp cmd, CardAddress addr)
|
||
{
|
||
command2048 (&vol, interface, (UCHAR) cmd) ; /* move flash pointer to respective area of the page*/
|
||
setAddress2048 (&vol, interface, addr) ;
|
||
|
||
waitForReady_nfdc2048(interface) ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* w r i t e C o m m a n d */
|
||
/* */
|
||
/* Issue write command. */
|
||
/* */
|
||
/* Parametes: */
|
||
/* vol : Pointer identifying drive */
|
||
/* interface : Pointer to window. */
|
||
/* cmd : Command to issue (according to area). */
|
||
/* addr : address to write to. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID writeCommand2048 (FLFlash vol, Interface interface, PointerOp cmd, CardAddress addr)
|
||
{
|
||
if (vol.flags & FULL_PAGE) {
|
||
command2048 (&vol, interface, RESET_FLASH); /* Clear page buffer */
|
||
waitForReady_nfdc2048(interface);
|
||
}
|
||
command2048 (&vol, interface, (UCHAR) cmd) ; /* move flash pointer to respective area of the page */
|
||
command2048 (&vol, interface, SERIAL_DATA_INPUT); /* start data loading for write */
|
||
setAddress2048 (&vol, interface, addr) ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d S t a t u s */
|
||
/* */
|
||
/* Read status of selected flash device. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* interface : Pointer to window. */
|
||
/* */
|
||
/* Returns: */
|
||
/* Chip status. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
USHORT readStatus2048(FLFlash vol, Interface interface)
|
||
{
|
||
USHORT chipStatus ;
|
||
|
||
command2048(&vol, interface, READ_STATUS);
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL( NOT_WP | CE ));
|
||
|
||
if ( vol.interleaving == 1 ) /* 8-bit*/
|
||
chipStatus = DBL(tffsReadByteFlash(&(interface->io[0].b)));
|
||
else /* 16-bit */
|
||
chipStatus = tffsReadWordFlash(&(interface->io[0].w));
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL( NOT_WP ));
|
||
|
||
return chipStatus;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* w r i t e E x e c u t e */
|
||
/* */
|
||
/* Execute write. */
|
||
/* */
|
||
/* Parametes: */
|
||
/* vol : Pointer identifying drive */
|
||
/* interface : Pointer to window. */
|
||
/* Returns: */
|
||
/* FLStatus : 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus writeExecute2048 (FLFlash vol, Interface interface)
|
||
{
|
||
command2048 (&vol, interface, SETUP_WRITE); /* execute page program*/
|
||
if (!waitForReady_nfdc2048(interface)) {
|
||
return flTimedOut;
|
||
}
|
||
if( readStatus2048(&vol, interface) & DBL(FAIL) )
|
||
return flWriteFault ;
|
||
|
||
return flOK ;
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d O n e S e c t o r */
|
||
/* */
|
||
/* Read up to one 512-byte block from flash. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address to read from. */
|
||
/* buffer : buffer to read to. */
|
||
/* length : number of bytes to read (up to sector size). */
|
||
/* modes : EDC flag etc. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus: 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus readOneSector_nfdc2048 (FLFlash vol,
|
||
CardAddress address, /* starting flash address*/
|
||
CHAR FAR1 *buffer, /* target buffer */
|
||
LONG length, /* bytes to read */
|
||
LONG modes) /* EDC flag etc.*/
|
||
{
|
||
FLStatus status = flOK;
|
||
PointerOp cmd;
|
||
CardAddress addr = address ;
|
||
|
||
Interface interface = mapContInterface(&vol, address); /* select flash device */
|
||
|
||
|
||
/* move flash pointer to areas A,B or C of page*/
|
||
|
||
makeCommand_nfdc2048 (&vol, &cmd, &addr, modes) ;
|
||
|
||
readCommand2048 (&vol, interface, cmd, addr);
|
||
|
||
#ifdef NFDC2048
|
||
if(modes & EDC) {
|
||
SET_ECC_CONFIG(interface, ECC_RST | ECC_EN); /*ECC reset and ON for read*/
|
||
}
|
||
#endif /* NFDC2048 */
|
||
|
||
if ((vol.interleaving == 1) && !(vol.flags & BIG_PAGE) ) /* 8-bit */
|
||
{
|
||
/* read up to two pages separately, starting page.. */
|
||
|
||
LONG toFirstPage, toSecondPage;
|
||
|
||
toFirstPage = (cmd == AREA_C ? 8 : 0x100) -
|
||
((USHORT)address & (cmd == AREA_C ? 7 : 0xff));
|
||
if (toFirstPage > length)
|
||
toFirstPage = length;
|
||
toSecondPage = length - toFirstPage ;
|
||
|
||
tffscpy16fromMedia ((UCHAR*)buffer, (const UCHAR FAR0 *) interface->io, toFirstPage ) ;
|
||
|
||
if ( toSecondPage > 0 )
|
||
{
|
||
/* next page*/
|
||
|
||
readCommand2048 (&vol, interface, AREA_A, address + toFirstPage) ;
|
||
|
||
tffscpy16fromMedia( (UCHAR*)(buffer + toFirstPage),
|
||
(const UCHAR FAR0 *) interface->io,
|
||
toSecondPage ) ;
|
||
}
|
||
}
|
||
else /* interleaving == 2 so 16-bit read*/
|
||
tffscpy16fromMedia( (UCHAR*)buffer, (const UCHAR FAR0 *) interface->io, length );
|
||
|
||
#ifdef NFDC2048
|
||
if( modes & EDC )
|
||
{
|
||
UCHAR extraBytes[SYNDROM_BYTES];
|
||
/* read syndrom to let it through the ECC unit*/
|
||
|
||
SET_ECC_CONFIG(interface, ECC_EN | PAR_DIS); /* parity off in ECC*/
|
||
|
||
tffscpy16fromMedia( extraBytes, (const UCHAR FAR0 *) interface->io, SYNDROM_BYTES ) ;
|
||
|
||
if( CHK_ECC_ERROR(interface) ) /* ECC error*/
|
||
{
|
||
if( (vol.interleaving == 1) && !(vol.flags & BIG_PAGE) )
|
||
{ /* HOOK : make ECC working on 2M /INLV 1 */ }
|
||
else
|
||
{
|
||
#ifdef USE_EDC
|
||
/* try to fix ECC error*/
|
||
|
||
if ( modes & SECOND_TRY ) /* 2nd try*/
|
||
{
|
||
UCHAR syndrom[SYNDROM_BYTES];
|
||
|
||
/* read syndrom-on-syndrom from ASIC*/
|
||
|
||
readSyndromOnSyndrom(interface, (USHORT*)syndrom );
|
||
|
||
if (flCheckAndFixEDC(buffer, (CHAR FAR1 *)syndrom, vol.interleaving == 2) != NO_EDC_ERROR) {
|
||
DEBUG_PRINT(("Debug: ECC error in NFDC 2048.\n"));
|
||
status = flDataError;
|
||
}
|
||
}
|
||
else /* 1st try - try once more*/
|
||
{
|
||
SET_ECC_CONFIG(interface, PAR_DIS); /* reset ECC*/
|
||
|
||
return readOneSector_nfdc2048(&vol, address, buffer, length, modes | SECOND_TRY ) ;
|
||
}
|
||
#endif /* USE_EDC*/
|
||
}
|
||
}
|
||
|
||
SET_ECC_CONFIG(interface, PAR_DIS); /* ECC off*/
|
||
}
|
||
#endif /* NFDC2048 */
|
||
|
||
interface->signals.w = DBL(NOT_WP) ;
|
||
|
||
return status;
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* w r i t e O n e S e c t o r */
|
||
/* */
|
||
/* Write data in one 512-byte block to flash. */
|
||
/* Assuming that EDC mode never requested on partial block writes. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address of sector to write to. */
|
||
/* buffer : buffer to write from. */
|
||
/* length : number of bytes to write (up to sector size). */
|
||
/* modes : OVERWRITE, EDC flags etc. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus: 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus writeOneSector_nfdc2048(FLFlash vol,
|
||
CardAddress address, /* target flash addres */
|
||
const CHAR FAR1 *buffer, /* source RAM buffer */
|
||
LONG length, /* bytes to write (up to BLOCK) */
|
||
LONG modes) /* OVERWRITE, EDC flags etc. */
|
||
{
|
||
FLStatus status;
|
||
PointerOp cmd;
|
||
|
||
Interface interface = mapContInterface(&vol, address); /* select flash device*/
|
||
|
||
if (flWriteProtected(vol.socket))
|
||
return flWriteProtect;
|
||
|
||
/* move flash pointer to areas A,B or C of page */
|
||
|
||
makeCommand_nfdc2048 (&vol, &cmd, &address, modes) ;
|
||
|
||
if ((vol.flags & FULL_PAGE) && cmd == AREA_B) {
|
||
ULONG prePad = 2 + ((USHORT) address & thisVars->pageMask);
|
||
|
||
writeCommand2048(&vol, interface, AREA_A, address + thisVars->pageAreaSize - prePad);
|
||
tffsset16( (UCHAR FAR0 *) interface->io, 0xff, prePad);
|
||
}
|
||
else
|
||
writeCommand2048(&vol, interface, cmd, address);
|
||
|
||
#ifdef NFDC2048
|
||
if (modes & EDC)
|
||
SET_ECC_CONFIG(interface, ECC_EN | ECC_RW); /* ECC ON for write*/
|
||
#endif
|
||
|
||
/* load data and syndrom*/
|
||
|
||
if( (vol.interleaving == 1) && !(vol.flags & BIG_PAGE) ) /* 8-bit*/
|
||
{
|
||
LONG toFirstPage, toSecondPage ;
|
||
/* write up to two pages separately*/
|
||
|
||
toFirstPage = (modes & EXTRA ? 8 : 0x100) -
|
||
((USHORT)address & (modes & EXTRA ? 7 : 0xff));
|
||
if (toFirstPage > length)
|
||
toFirstPage = length;
|
||
toSecondPage = length - toFirstPage ;
|
||
|
||
tffscpy16toMedia( (UCHAR FAR0 *) interface->io, /* user data */
|
||
(const UCHAR *)buffer,
|
||
toFirstPage);
|
||
|
||
if ( toSecondPage > 0 )
|
||
{
|
||
checkStatus( writeExecute2048(&vol, interface) ) ; /* done with 1st page */
|
||
|
||
writeCommand2048(&vol, interface, AREA_A, address + toFirstPage);
|
||
/* user data*/
|
||
tffscpy16toMedia( (UCHAR FAR0 *) interface->io,
|
||
(const UCHAR *)(buffer + toFirstPage),
|
||
toSecondPage);
|
||
}
|
||
}
|
||
else /* 16-bit*/
|
||
tffscpy16toMedia( (UCHAR FAR0 *) interface->io, /* user data*/
|
||
(const UCHAR *)buffer,
|
||
length );
|
||
|
||
if(modes & EDC)
|
||
{
|
||
USHORT extraBytes[SYNDROM_BYTES / sizeof(USHORT) + 1];
|
||
/* Read the ECC syndrom*/
|
||
|
||
#ifdef NFDC2048
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP));
|
||
SET_ECC_CONFIG(interface, ECC_EN | PAR_DIS | ECC_RW); /* ECC parity off*/
|
||
|
||
readSyndrom_nfdc2048( interface, (USHORT*)extraBytes) ;
|
||
|
||
/* Write ECC syndrom and ANAND mark to the tail*/
|
||
|
||
SET_ECC_CONFIG(interface, PAR_DIS); /* ECC off*/
|
||
interface->signals.w = DBL(NOT_WP | CE);
|
||
#else
|
||
extraBytes[0] = extraBytes[1] = extraBytes[2] = 0xffff;
|
||
#endif /* NFDC2048 */
|
||
|
||
extraBytes[SYNDROM_BYTES / sizeof(USHORT)] = 0x5555; /* Anand mark */
|
||
|
||
tffscpy16toMedia((UCHAR FAR0 *) interface->io, (const UCHAR *)extraBytes,
|
||
sizeof extraBytes);
|
||
}
|
||
|
||
status = writeExecute2048(&vol, interface);
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP));
|
||
|
||
return status;
|
||
}
|
||
|
||
|
||
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
||
<20> Core MTD methods - read, write and erase <20>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n R e a d */
|
||
/* */
|
||
/* Read some data from the flash. This routine will be registered as */
|
||
/* the read routine for this MTD. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address to read from. */
|
||
/* buffer : buffer to read to. */
|
||
/* length : number of bytes to read (up to sector size). */
|
||
/* modes : EDC flag etc. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus: 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus cdsnRead( FLFlash vol,
|
||
CardAddress address, /* target flash address */
|
||
VOID FAR1 *buffer, /* source RAM buffer */
|
||
dword length, /* bytes to write */
|
||
word modes) /* Overwrite, EDC flags etc. */
|
||
{
|
||
CHAR FAR1 *temp;
|
||
ULONG readNow;
|
||
|
||
/* read in sectors; first and last might be partial*/
|
||
|
||
ULONG block = modes & EXTRA ? 8 : SECTOR_SIZE;
|
||
|
||
readNow = block - ((USHORT)address & (block - 1));
|
||
temp = (CHAR FAR1 *)buffer;
|
||
for ( ; length > 0 ; )
|
||
{
|
||
if (readNow > length)
|
||
readNow = length;
|
||
|
||
/* turn off EDC on partial block read*/
|
||
checkStatus( readOneSector_nfdc2048(&vol, address, temp, readNow,
|
||
(readNow != SECTOR_SIZE ? (modes & ~EDC) : modes)) );
|
||
|
||
length -= readNow;
|
||
address += readNow;
|
||
temp += readNow;
|
||
|
||
/* align at sector */
|
||
readNow = block;
|
||
}
|
||
|
||
return flOK ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n W r i t e */
|
||
/* */
|
||
/* Write some data to the flash. This routine will be registered as the */
|
||
/* write routine for this MTD. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Address of sector to write to. */
|
||
/* buffer : buffer to write from. */
|
||
/* length : number of bytes to write (up to sector size). */
|
||
/* modes : OVERWRITE, EDC flags etc. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus: 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus cdsnWrite( FLFlash vol,
|
||
CardAddress address, /* target flash address*/
|
||
const VOID FAR1 *buffer, /* source RAM buffer */
|
||
dword length, /* bytes to write */
|
||
word modes) /* Overwrite, EDC flags etc.*/
|
||
{
|
||
ULONG writeNow;
|
||
const CHAR FAR1 *temp;
|
||
FLStatus status = flOK;
|
||
#ifdef VERIFY_AFTER_WRITE
|
||
CardAddress saveAddress = address;
|
||
USHORT flReadback[SECTOR_SIZE / sizeof(USHORT)];
|
||
#endif
|
||
|
||
/* write in sectors; first and last might be partial*/
|
||
LONG block = modes & EXTRA ? 8 : SECTOR_SIZE;
|
||
|
||
writeNow = block - ((USHORT)address & (block - 1));
|
||
temp = (const CHAR FAR1 *)buffer;
|
||
for ( ; length > 0 ; )
|
||
{
|
||
if (writeNow > length)
|
||
writeNow = length;
|
||
|
||
/* turn off EDC on partial block write*/
|
||
status = writeOneSector_nfdc2048(&vol, address, temp, writeNow,
|
||
writeNow != SECTOR_SIZE ? (modes & ~EDC) : modes);
|
||
|
||
if (status != flOK)
|
||
break;
|
||
|
||
#ifdef VERIFY_AFTER_WRITE
|
||
status = readOneSector_nfdc2048 (&vol, address, (CHAR FAR1 *)flReadback,
|
||
writeNow, (writeNow != SECTOR_SIZE ? (modes & ~EDC) : modes));
|
||
|
||
if((status != flOK) || (tffscmp(temp, flReadback, writeNow) != 0))
|
||
{ status = flWriteFault; break; }
|
||
#endif
|
||
|
||
length -= writeNow;
|
||
address += writeNow;
|
||
temp += writeNow;
|
||
|
||
/* align at sector */
|
||
writeNow = block;
|
||
}
|
||
|
||
return flOK ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n E r a s e */
|
||
/* */
|
||
/* Erase number of blocks. This routine will be registered as the */
|
||
/* erase routine for this MTD. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* blockNo : First block to erase. */
|
||
/* blocksToErase : Number of blocks to erase. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus : 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus cdsnErase( FLFlash vol,
|
||
word blockNo, /* start' block (0 .. chipNoOfBlocks-1)*/
|
||
word blocksToErase) /* Number of blocks to be erased */
|
||
{
|
||
LONG i;
|
||
FLStatus status = flOK;
|
||
|
||
Interface interface =
|
||
mapContInterface(&vol, (LONG)blockNo * vol.erasableBlockSize ) ; /* select device*/
|
||
|
||
if (flWriteProtected(vol.socket))
|
||
return flWriteProtect;
|
||
|
||
blockNo %= thisVars->noOfBlocks ; /* within flash device */
|
||
|
||
if ( blockNo + blocksToErase > thisVars->noOfBlocks ) /* accross device boundary */
|
||
return flBadParameter;
|
||
|
||
for ( i=0 ; i < blocksToErase ; i++, blockNo++ )
|
||
{
|
||
USHORT pageNo = (USHORT) (blockNo * thisVars->pagesPerBlock);
|
||
|
||
command2048(&vol, interface, SETUP_ERASE);
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(ALE | NOT_WP | CE));
|
||
|
||
/* send 'pageNo' to the flash in the following sequence: */
|
||
/* bits 7..0 first */
|
||
/* bits 15..8 next */
|
||
if (vol.interleaving == 1)
|
||
{
|
||
tffsWriteByteFlash(&(interface->io[0].b),(UCHAR)pageNo);
|
||
tffsWriteByteFlash(&(interface->io[0].b),(UCHAR)(pageNo >> 8));
|
||
}
|
||
else
|
||
{
|
||
tffsWriteWordFlash(&(interface->io[0].w), DBL(pageNo));
|
||
tffsWriteWordFlash(&(interface->io[0].w), DBL(pageNo >> 8));
|
||
}
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP | CE));
|
||
|
||
/* if only one block may be erase at a time then do it
|
||
otherwise leave it for later*/
|
||
|
||
command2048(&vol, interface, CONFIRM_ERASE);
|
||
|
||
if (!waitForReady_nfdc2048(interface))
|
||
status = flTimedOut;
|
||
|
||
if ( readStatus2048(&vol, interface) & DBL(FAIL)) { /* erase operation failed*/
|
||
status = flWriteFault ;
|
||
}
|
||
|
||
if (status != flOK) { /* reset flash device and abort */
|
||
DEBUG_PRINT(("Debug: erase failed in NFDC 2048.\n"));
|
||
command2048(&vol, interface, RESET_FLASH ) ;
|
||
waitForReady_nfdc2048(interface) ;
|
||
|
||
break ;
|
||
}
|
||
} /* block loop */
|
||
|
||
#ifdef MULTI_ERASE
|
||
/* do multiple block erase as was promised*/
|
||
|
||
command2048(&vol, interface, CONFIRM_ERASE);
|
||
if (!waitForReady_nfdc2048(interface))
|
||
status = flTimedOut;
|
||
|
||
if ( readStatus2048(interface) & DBL(FAIL)) { /* erase operation failed*/
|
||
status = flWriteFault ;
|
||
}
|
||
|
||
if (status != flOK) { /* reset flash device and abort*/
|
||
DEBUG_PRINT(("Debug: erase failed in NFDC 2048.\n"));
|
||
command2048(&vol, interface, RESET_FLASH ) ;
|
||
waitForReady_nfdc2048(interface) ;
|
||
}
|
||
#endif /* MULTI_ERASE*/
|
||
|
||
if(status == flOK)
|
||
if ( readStatus2048(&vol, interface) & DBL(FAIL) ) {
|
||
DEBUG_PRINT(("Debug: erase failed in NFDC 2048.\n"));
|
||
status = flWriteFault;
|
||
}
|
||
|
||
return status;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n M a p */
|
||
/* */
|
||
/* Map through buffer. This routine will be registered as the map */
|
||
/* routine for this MTD. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* address : Flash address to be mapped. */
|
||
/* length : number of bytes to map. */
|
||
/* */
|
||
/* Returns: */
|
||
/* Pointer to the buffer data was mapped to. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID FAR0 * cdsnMap ( FLFlash vol,
|
||
CardAddress address,
|
||
int length )
|
||
{
|
||
cdsnRead(&vol,address,thisBuffer,length, 0);
|
||
vol.socket->remapped = TRUE;
|
||
return (VOID FAR0 *)thisBuffer;
|
||
}
|
||
|
||
#ifdef NFDC2048
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n S e t C a l l b a c k */
|
||
/* */
|
||
/* Register a routine (powerUp()) for power on callback. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
VOID cdsnSetCallback(FLFlash vol)
|
||
{
|
||
flSetPowerOnCallback(vol.socket, powerUp, &vol);
|
||
}
|
||
#endif /* NFDC2048 */
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* i s K n o w n M e d i a */
|
||
/* */
|
||
/* Check if this flash media is supported. Initialize relevant fields */
|
||
/* in data structures. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* vendorId_P : vendor ID read from chip. */
|
||
/* chipId_p : chip ID read from chip. */
|
||
/* dev : dev chips were accessed before this one. */
|
||
/* */
|
||
/* Returns: */
|
||
/* TRUE if this media is supported, FALSE otherwise. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLBoolean isKnownMedia_nfdc2048( FLFlash vol,
|
||
USHORT vendorId_p,
|
||
USHORT chipId_p,
|
||
LONG dev )
|
||
{
|
||
#ifdef NFDC2048
|
||
if ((chipId_p & 0xff00) == 0x6400)
|
||
chipId_p = DBL(0x64); /* Workaround for TC5816/NFDC2048 problem */
|
||
#endif /* NFDC2048 */
|
||
|
||
if (dev == 0)
|
||
{
|
||
thisVars->vendorID = vendorId_p; /* remember for next chips */
|
||
thisVars->chipID = chipId_p;
|
||
thisVars->pagesPerBlock = PAGES_PER_BLOCK;
|
||
|
||
if (vendorId_p == DBL(0xEC)) /* Samsung */
|
||
{
|
||
switch (chipId_p)
|
||
{
|
||
case DBL(0x64): /* 2M */
|
||
case DBL(0xEA) :
|
||
vol.type = KM29N16000_FLASH ;
|
||
vol.chipSize = 0x200000L;
|
||
return TRUE;
|
||
|
||
case DBL(0xE5):
|
||
case DBL(0xE3): /* 4M */
|
||
vol.type = KM29N32000_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x400000L;
|
||
return TRUE;
|
||
|
||
case DBL(0xE6): /* 8M */
|
||
vol.type = KM29V64000_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x800000L;
|
||
return TRUE;
|
||
|
||
case DBL(0x73): /* 16 Mb */
|
||
vol.type = KM29V128000_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x1000000L;
|
||
thisVars->pagesPerBlock *= 2;
|
||
return TRUE;
|
||
|
||
case DBL(0x75): /* 32 Mb */
|
||
vol.type = KM29V256000_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x2000000L;
|
||
thisVars->pagesPerBlock *= 2;
|
||
return TRUE;
|
||
}
|
||
}
|
||
else
|
||
if (vendorId_p == DBL(0x8F)) /* National */
|
||
{
|
||
switch (chipId_p)
|
||
{
|
||
case DBL(0x64): /* 2M */
|
||
vol.type = NM29N16_FLASH;
|
||
vol.chipSize = 0x200000L;
|
||
return TRUE;
|
||
}
|
||
}
|
||
else
|
||
if (vendorId_p == DBL(0x98)) /* Toshiba */
|
||
{
|
||
vol.flags |= FULL_PAGE; /* no partial page programming */
|
||
|
||
switch (chipId_p)
|
||
{
|
||
case DBL(0x64): /* 2M */
|
||
case DBL(0xEA) :
|
||
vol.type = TC5816_FLASH;
|
||
vol.chipSize = 0x200000L;
|
||
return TRUE;
|
||
|
||
case DBL(0x6B): /* 4M */
|
||
case DBL(0xE5):
|
||
vol.type = TC5832_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x400000L;
|
||
return TRUE;
|
||
|
||
case DBL(0xE6): /* 8M */
|
||
vol.type = TC5816_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x800000L;
|
||
return TRUE;
|
||
|
||
case DBL(0x73): /* 16 Mb */
|
||
vol.type = TC58128_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x1000000L;
|
||
thisVars->pagesPerBlock *= 2;
|
||
return TRUE;
|
||
|
||
case DBL(0x75): /* 32 Mb */
|
||
vol.type = TC58256_FLASH;
|
||
vol.flags |= BIG_PAGE;
|
||
vol.chipSize = 0x2000000L;
|
||
thisVars->pagesPerBlock *= 2;
|
||
return TRUE;
|
||
}
|
||
}
|
||
}
|
||
else /* dev != 0*/
|
||
if( (vendorId_p == thisVars->vendorID) && (chipId_p == thisVars->chipID) )
|
||
return TRUE ;
|
||
|
||
return FALSE ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* r e a d F l a s h I D */
|
||
/* */
|
||
/* Read vendor and chip IDs, count flash devices. Initialize relevant */
|
||
/* fields in data structures. */
|
||
/* */
|
||
/* Parameters: */
|
||
/* vol : Pointer identifying drive */
|
||
/* interface : Pointer to window. */
|
||
/* dev : dev chips were accessed before this one. */
|
||
/* */
|
||
/* Returns: */
|
||
/* TRUE if this media is supported, FALSE otherwise. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
LONG readFlashID2048 (FLFlash vol, Interface interface, LONG dev)
|
||
{
|
||
USHORT vendorId_p, chipId_p ;
|
||
|
||
KeStallExecutionProcessor(250 * 1000);
|
||
command2048(&vol, interface, RESET_FLASH ) ;
|
||
flDelayMsecs(10);
|
||
command2048(&vol, interface, READ_ID);
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(ALE | NOT_WP | CE));
|
||
|
||
if (vol.interleaving == 1) {
|
||
tffsWriteByteFlash(&(interface->io[0].b), 0); /* Read ID from*/
|
||
} else { /* address 0. */
|
||
tffsWriteWordFlash(&(interface->io[0].w), 0);
|
||
}
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP | CE));
|
||
|
||
/* read vendor and chip IDs */
|
||
|
||
vendorId_p = (vol.interleaving == 1 ? DBL(tffsReadByteFlash(&(interface->io[0].b))) : tffsReadWordFlash(&(interface->io[0].w))) ;
|
||
chipId_p = (vol.interleaving == 1 ? DBL(tffsReadByteFlash(&(interface->io[0].b))) : tffsReadWordFlash(&(interface->io[0].w)));
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP));
|
||
|
||
if ( isKnownMedia_nfdc2048(&vol, vendorId_p, chipId_p, dev) != TRUE ) /* no chip or diff.*/
|
||
return FALSE ; /* type of flash */
|
||
|
||
/* set flash parameters*/
|
||
|
||
if ( dev == 0 )
|
||
{
|
||
thisVars->pageAreaSize = (USHORT) (0x100 * vol.interleaving);
|
||
thisVars->pageSize = (USHORT) ((vol.flags & BIG_PAGE ? 0x200 : 0x100) * vol.interleaving);
|
||
thisVars->tailSize = (USHORT) ((vol.flags & BIG_PAGE ? 16 : 8) * vol.interleaving);
|
||
thisVars->pageMask = thisVars->pageSize - 1 ;
|
||
vol.erasableBlockSize = thisVars->pagesPerBlock * thisVars->pageSize;
|
||
thisVars->noOfBlocks = (USHORT)( (vol.chipSize * vol.interleaving)
|
||
/ vol.erasableBlockSize ) ;
|
||
}
|
||
|
||
return TRUE ;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* c d s n I d e n t i f y */
|
||
/* */
|
||
/* Identify flash. This routine will be registered as the */
|
||
/* identification routine for this MTD. */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus: 0 on success, otherwise failed. */
|
||
/* */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus cdsnIdentify(FLFlash vol)
|
||
{
|
||
LONG addr = 0L ;
|
||
Interface interface;
|
||
|
||
DEBUG_PRINT(("Debug: Entering NFDC 2048 identification routine\n"));
|
||
|
||
flDelayMsecs(10); /* wait for socket to power up */
|
||
|
||
flSetWindowBusWidth(vol.socket,16);/* use 16-bits */
|
||
flSetWindowSpeed(vol.socket,250); /* 250 nsec. */
|
||
flSetWindowSize(vol.socket,2); /* 4 KBytes */
|
||
|
||
vol.mtdVars = &mtdVars_nfdc2048[flSocketNoOf(vol.socket)];
|
||
/* get pointer to buffer (we assume SINGLE_BUFFER is not defined) */
|
||
thisVars->buffer = flBufferOf(flSocketNoOf(vol.socket));
|
||
|
||
/* detect card - identify bit toggles on consequitive reads*/
|
||
|
||
vol.chipSize = 0x200000L ; /* Assume something ... */
|
||
vol.interleaving = 1; /* unimportant for now */
|
||
interface = mapContInterface(&vol, 0);
|
||
KeStallExecutionProcessor(250 * 1000);
|
||
|
||
if((tffsReadByteFlash(&(interface->eccConfig.b)) & TOGGLE) == (tffsReadByteFlash(&(interface->eccConfig.b)) & TOGGLE))
|
||
return flUnknownMedia;
|
||
|
||
/* read interleave from the card*/
|
||
|
||
#ifdef NFDC2048
|
||
vol.interleaving = ( (getAttReg(&vol, JUMPERS ) & JMPER_INLV) ? 1 : 2 );
|
||
|
||
powerUp((VOID *) &vol);
|
||
interface = mapContInterface(&vol, 0);
|
||
KeStallExecutionProcessor(250 * 1000);
|
||
|
||
if (vol.interleaving == 1)
|
||
flSetWindowBusWidth(vol.socket, 8);
|
||
|
||
#else
|
||
vol.interleaving = INLV;
|
||
#endif /* NFDC2048 */
|
||
|
||
/* reset all flash devices*/
|
||
|
||
tffsWriteWordFlash(&(interface->signals.w), DBL(NOT_WP));
|
||
|
||
/* identify and count flash chips, figure out flash parameters*/
|
||
|
||
for (vol.noOfChips = 0 ;
|
||
vol.noOfChips < MAX_FLASH_DEVICES;
|
||
vol.noOfChips += vol.interleaving,
|
||
addr += vol.chipSize * vol.interleaving)
|
||
{
|
||
interface = mapContInterface(&vol, addr) ;
|
||
if ( readFlashID2048(&vol, interface, vol.noOfChips) != TRUE ) /* no chip or different type of flash*/
|
||
break ;
|
||
}
|
||
|
||
if ( vol.noOfChips == 0 ) /* no chips were found */
|
||
return flUnknownMedia;
|
||
|
||
/* ECC off*/
|
||
|
||
interface = mapContInterface(&vol, 0);
|
||
KeStallExecutionProcessor(250 * 1000);
|
||
|
||
#ifdef NFDC2048
|
||
SET_ECC_CONFIG(interface, PAR_DIS); /* disable ECC and parity*/
|
||
setAttReg(&vol, CARD_CONFIG, PWRDWN);
|
||
#endif /* NFDC2048 */
|
||
|
||
/* Register our flash handlers */
|
||
vol.write = cdsnWrite;
|
||
vol.erase = cdsnErase;
|
||
vol.read = cdsnRead;
|
||
vol.map = cdsnMap;
|
||
#ifdef NFDC2048
|
||
vol.setPowerOnCallback = cdsnSetCallback;
|
||
#endif
|
||
|
||
vol.flags |= NFTL_ENABLED;
|
||
|
||
DEBUG_PRINT(("Debug: Identified NFDC 2048.\n"));
|
||
|
||
return flOK;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* f l R e g i s t e r C D S N */
|
||
/* */
|
||
/* Registers this MTD for use */
|
||
/* */
|
||
/* Parameters: */
|
||
/* None */
|
||
/* */
|
||
/* Returns: */
|
||
/* FLStatus : 0 on success, otherwise failure */
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
FLStatus flRegisterCDSN(VOID)
|
||
{
|
||
if (noOfMTDs >= MTDS)
|
||
return flTooManyComponents;
|
||
|
||
mtdTable[noOfMTDs++] = cdsnIdentify;
|
||
|
||
return flOK;
|
||
}
|