/*** File:     dpconfig.h** Version:  1.0.1**** Copyright 1996 Applied Microsystems, Inc.  All rights reserved.**** This file contains configuration information which needs to be ported** to new platforms running the netrom dualport communication code.  Sections ** requiring porting are marked with:****		***	PORT THIS SECTION	****/#ifndef _dpconfig_h#define	_dpconfig_h/* Generic macros */#define	True		1#define	False		0/* ** This section contains configuration information for the dualport protocols.** These parameters essentially become inputs to the config_dpram() call** which initializes the target side of the protocols.  The semantics of ** these parameters are:****  ROM_START      is the 32-bit target address of the start of the ROM**                 words containing dualport memory.  This is**not***                 the address of dualport memory itself, but is the base**                 address of the rom word containing pod 0.** **  ROMWORDWIDTH   is the number of bytes making up a 'word'.  The**                 value describes the memory sybsystem of the target,**                 not the word size of the CPU.  For example,**                 if ROM memory is organized as an array of 16 bit**                 words, this number is two.  If the processor has a**                 32-bit architecture, but only one 8-bit ROM is**                 used to provide ROM memory, this value is 1.****  POD_0_INDEX    is the index within a rom word of pod 0.  This number**                 reflects the ROM byte emulated by pod 0.  The following**                 table shows what value to use for common word sizes**                 and podorder environment variable:**                      ****                          Word size      podorder        POD_0_INDEX**                          --------       --------        -----------**                           8-bits     (any podorder)         0**                          16-bits     podorder == 0:1        0**                                      podorder == 1:0        1**                          32-bits     podorder == 0:1:2:3    0**                                      podorder == 3:2:1:0    3****  NUMACCESSES    is the number of accesses the target processor makes**                 to pod 0 in the course of reading a single 8-bit**                 value from the pod.****  ROMSIZE        is the number of bytes in an individual ROM.  This**                 number should agree with NetROM's romtype environment**                 variable.****  DP_BASE        is the 32-bit target address of the first byte of dualport**                 memory.  Dualport memory is always in pod 0.  The default**                 location is 2K from the end of pod 0.  The formula below**                 is correct for this default location.  If you have moved**                 dualport RAM, you must adjust the formula to give the**                 correct address.  This define should be the first argument**                 in your call to config_dpram().**** Consult the NetROM user's manual for more information on the readaddress** protocol and on the parameters to config_dpram().***//* Sizes of common rom types */#define RS_64K         (64  * 1024L)#define RS_128K	       (128 * 1024L)#define RS_256K        (256 * 1024L)#define RS_512K        (512 * 1024L)#define RS_1MEG        (1   * 1048576L)#define RS_2MEG        (2   * 1048576L)#define RS_4MEG        (4   * 1048576L)#define	RS_27C010	RS_128K#define	RS_27C020	RS_256K#define	RS_27C040	RS_512K#define	RS_27C080	RS_1MEG/*---------------------------------------------------------------*//*		***	PORT THIS SECTION      ***               *//*---------------------------------------------------------------*/#define	VxWorks#ifndef	VxWorks#define ROMSTART        0xFFF00000L #define ROMWORDWIDTH     2#define POD_0_INDEX      0#define ROMSIZE          RS_27C020/* MAX_WAIT_FTN_SIZE is used on read-only targets only.** The wait_ftn() must execute from RAM while NetROM sets Podmem.** MAX_WAIT_FTN_SIZE is the amount of memory to allocate in RAM** for the wait_ftn().  nr_ConfigDP() copies wait_fnt() to RAM.** If too little memory is set aside, nr_ConfigDP() will return** with an error.  If extra memory is set aside, no problem...** the nr_ConfigDP() only copies the minimum amount to RAM.**** Note: Using an MRI compiler w/ an i960 target,**** sizeof(wait_ftn()) = _nr_WaitEnd  -  _nr_Wait**                    =  0xE0051400  -  0xE00514F0**                    = 0xF0*/#define MAX_WAIT_FTN_SIZE  0x200/* The following formula is correct ONLY if dualport is at the default ** location, at the top of pod 0.** If you move dualport RAM to somewhere else, redefine DP_BASE !!!*/#define DP_BASE (ROMSTART + ((ROMSIZE - DUALPORT_SIZE) * ROMWORDWIDTH))/* The following #define locates DP_BASE at the beginning of Pod 0 *//* #define DP_BASE (ROMSTART) *//* Do NOT modify ROMEND */#define ROMEND  (ROMSTART + ROMSIZE * ROMWORDWIDTH)/* If your target CAN write to the memory emulated by NetROM,** define READONLY_TARGET as False;** If your target CANNOT write to the memory emulated by NetROM,**   define READONLY_TARGET as True*/#define READONLY_TARGET True/* Set to True  if your target is little-endian, for example, Intel** Set to False if your target is big-endian,    for example, Motorola*/#define LITTLE_ENDIAN_TGT True     /* Big-endian / little-endian conversion routine */#if(LITTLE_ENDIAN_TGT == True )  #define swap32(x) \    (( (long)(x) & 0x000000FF) << 24)  +  \    (( (long)(x) & 0x0000FF00) << 8 )  +  \    (( (long)(x) & 0x00FF0000) >> 8 )  +  \    (( (long)(x) & 0xFF000000) >> 24)   #define swap16(x) \    (( (int)(x) & 0x00FF) << 8 ) + (( (int)(x) & 0xFF00) >> 8 )#else  #define swap32(x) x  #define swap16(x) x#endif  /* LITTLE_ENDIAN_TGT *//* Define VETHER only if you are using Virtual Ethernet *//* #define VETHER *//* macro to allow other processes to run in a multitasking system *//* If you are NOT using vxWorks, define YIELD_CPU for your RTOS */#ifdef vxworks#include "taskLib.h"#define nr_YieldCPU() taskDelay(1) /* closest thing in VxWorks */#else#define nr_YieldCPU()#endif/* Macros to turn interrupts ON and OFF ** Required for nr_SetMem() which MUST be atomic. In multitasking ** systems, unless your code assures that the channel will not be** written to by another function while nr_SetMem() is running, you'll** need to define these macros.  These macros are** target-specific, you must supply them.*/#define nr_InterruptsOFF()#define nr_InterruptsON() /* The following three macros control target caching.  They are** required for dualport communication protocol on targets that** cache the memory region emulated by NetROM. **** Cache-related macros:**   nr_HasCache      Boolean; equals True if your target caches**                    the memory emulated by NetROM, False otherwise.**   nr_DataCacheOff  Turns caching OFF--you must supply this for your target**   nr_DataCacheOn   Restores caching--you must supply this for your target*/#define	nr_HasCache       False /* True */#define nr_DataCacheOff()#define nr_DataCacheOn()#else	/* VxWorks *//* VxWorks - specific definitions */extern int wdbNetromKey;	/* interrupt lockout key */#define ROMSTART	ROM_BASE_ADRS#define ROMWORDWIDTH	WDB_NETROM_WIDTH#define POD_0_INDEX	WDB_NETROM_INDEX#define ROMSIZE         WDB_NETROM_ROMSIZE#define DP_BASE		(ROMSTART + ((ROMSIZE - DUALPORT_SIZE) * ROMWORDWIDTH))#define ROMEND		(ROMSTART + ROMSIZE * ROMWORDWIDTH)#define MAX_WAIT_FTN_SIZE  0x200#define READONLY_TARGET True#if	(_BYTE_ORDER == _LITTLE_ENDIAN)  #define LITTLE_ENDIAN_TGT True   #define swap32(x) \    (( (long)(x) & 0x000000FF) << 24)  +  \    (( (long)(x) & 0x0000FF00) << 8 )  +  \    (( (long)(x) & 0x00FF0000) >> 8 )  +  \    (( (long)(x) & 0xFF000000) >> 24)   #define swap16(x) \    (( (int)(x) & 0x00FF) << 8 ) + (( (int)(x) & 0xFF00) >> 8 )#else  #define LITTLE_ENDIAN_TGT False  #define swap32(x) x  #define swap16(x) x#endif#define nr_YieldCPU()#define nr_InterruptsOFF()	{wdbNetromLock = intLock();}#define nr_InterruptsON() 	{intUnlock (wdbNetromLock);}#define	nr_HasCache       False /* True */#define nr_DataCacheOff()#define nr_DataCacheOn()#endif	/* VxWorks */#endif	/* _dpconfig_h */