hal.h

LINUX2.6.15的源代码

extern const unsigned char Xthal_cp_num;
/* index of highest numbered coprocessor, plus one */
extern const unsigned char Xthal_cp_max;
/* index of highest allowed coprocessor number, per cfg, plus one */
/*extern const unsigned char Xthal_cp_maxcfg;*/
/* bitmask of which coprocessors are present */
extern const unsigned int  Xthal_cp_mask;

/* read and write cpenable register */
extern void xthal_set_cpenable(unsigned);
extern unsigned xthal_get_cpenable(void);

/* read & write extra state register */
/*extern int xthal_read_extra(void *base, unsigned reg, unsigned *value);*/
/*extern int xthal_write_extra(void *base, unsigned reg, unsigned value);*/

/* read & write a TIE coprocessor register */
/*extern int xthal_read_cpreg(void *base, int cp, unsigned reg, unsigned *value);*/
/*extern int xthal_write_cpreg(void *base, int cp, unsigned reg, unsigned value);*/

/* return coprocessor number based on register */
/*extern int xthal_which_cp(unsigned reg);*/

/*----------------------------------------------------------------------
   				Interrupts
  ----------------------------------------------------------------------*/

/* the number of interrupt levels */
extern const unsigned char Xthal_num_intlevels;
/* the number of interrupts */
extern const unsigned char Xthal_num_interrupts;

/* mask for level of interrupts */
extern const unsigned int Xthal_intlevel_mask[XTHAL_MAX_INTLEVELS];
/* mask for level 0 to N interrupts */
extern const unsigned int Xthal_intlevel_andbelow_mask[XTHAL_MAX_INTLEVELS];

/* level of each interrupt */
extern const unsigned char Xthal_intlevel[XTHAL_MAX_INTERRUPTS];

/* type per interrupt */
extern const unsigned char Xthal_inttype[XTHAL_MAX_INTERRUPTS];

/* masks of each type of interrupt */
extern const unsigned int Xthal_inttype_mask[XTHAL_MAX_INTTYPES];

/* interrupt numbers assigned to each timer interrupt */
extern const int Xthal_timer_interrupt[XTHAL_MAX_TIMERS];

/***  Virtual interrupt prioritization:  ***/

/*  Convert between interrupt levels (as per PS.INTLEVEL) and virtual interrupt priorities:  */
extern unsigned	xthal_vpri_to_intlevel(unsigned vpri);
extern unsigned	xthal_intlevel_to_vpri(unsigned intlevel);

/*  Enables/disables given set (mask) of interrupts; returns previous enabled-mask of all ints:  */
extern unsigned	xthal_int_enable(unsigned);
extern unsigned	xthal_int_disable(unsigned);

/*  Set/get virtual priority of an interrupt:  */
extern int	xthal_set_int_vpri(int intnum, int vpri);
extern int	xthal_get_int_vpri(int intnum);

/*  Set/get interrupt lockout level for exclusive access to virtual priority data structures:  */
extern void	xthal_set_vpri_locklevel(unsigned intlevel);
extern unsigned	xthal_get_vpri_locklevel(void);

/*  Set/get current virtual interrupt priority:  */
extern unsigned	xthal_set_vpri(unsigned vpri);
extern unsigned	xthal_get_vpri(unsigned vpri);
extern unsigned	xthal_set_vpri_intlevel(unsigned intlevel);
extern unsigned	xthal_set_vpri_lock(void);



/*----------------------------------------------------------------------
   			Generic Interrupt Trampolining Support
  ----------------------------------------------------------------------*/

typedef void (XtHalVoidFunc)(void);

/*
 *  Bitmask of interrupts currently trampolining down:
 */
extern unsigned Xthal_tram_pending;

/*
 *  Bitmask of which interrupts currently trampolining down
 *  synchronously are actually enabled; this bitmask is necessary
 *  because INTENABLE cannot hold that state (sync-trampolining
 *  interrupts must be kept disabled while trampolining);
 *  in the current implementation, any bit set here is not set
 *  in INTENABLE, and vice-versa; once a sync-trampoline is
 *  handled (at level one), its enable bit must be moved from
 *  here to INTENABLE:
 */
extern unsigned Xthal_tram_enabled;

/*
 *  Bitmask of interrupts configured for sync trampolining:
 */
extern unsigned Xthal_tram_sync;


/*  Trampoline support functions:  */
extern unsigned  xthal_tram_pending_to_service( void );
extern void      xthal_tram_done( unsigned serviced_mask );
extern int       xthal_tram_set_sync( int intnum, int sync );
extern XtHalVoidFunc* xthal_set_tram_trigger_func( XtHalVoidFunc *trigger_fn );

/*  INTENABLE,INTREAD,INTSET,INTCLEAR register access functions:  */
extern unsigned  xthal_get_intenable( void );
extern void      xthal_set_intenable( unsigned );
extern unsigned  xthal_get_intread( void );
extern void      xthal_set_intset( unsigned );
extern void      xthal_set_intclear( unsigned );


/*----------------------------------------------------------------------
   				Register Windows
  ----------------------------------------------------------------------*/

/* number of registers in register window */
extern const unsigned int  Xthal_num_aregs;
extern const unsigned char Xthal_num_aregs_log2;

/*  This spill any live register windows (other than the caller's):  */
extern void      xthal_window_spill( void );


/*----------------------------------------------------------------------
   				Cache
  ----------------------------------------------------------------------*/

/* size of the cache lines in log2(bytes) */
extern const unsigned char Xthal_icache_linewidth;
extern const unsigned char Xthal_dcache_linewidth;
/* size of the cache lines in bytes */
extern const unsigned short Xthal_icache_linesize;
extern const unsigned short Xthal_dcache_linesize;
/* number of cache sets in log2(lines per way) */
extern const unsigned char Xthal_icache_setwidth;
extern const unsigned char Xthal_dcache_setwidth;
/* cache set associativity (number of ways) */
extern const unsigned int  Xthal_icache_ways;
extern const unsigned int  Xthal_dcache_ways;
/* size of the caches in bytes (ways * 2^(linewidth + setwidth)) */
extern const unsigned int  Xthal_icache_size;
extern const unsigned int  Xthal_dcache_size;
/* cache features */
extern const unsigned char Xthal_dcache_is_writeback;
extern const unsigned char Xthal_icache_line_lockable;
extern const unsigned char Xthal_dcache_line_lockable;

/* cache attribute register control (used by other HAL routines) */
extern unsigned xthal_get_cacheattr( void );
extern unsigned xthal_get_icacheattr( void );
extern unsigned xthal_get_dcacheattr( void );
extern void     xthal_set_cacheattr( unsigned );
extern void     xthal_set_icacheattr( unsigned );
extern void     xthal_set_dcacheattr( unsigned );

/* initialize cache support (must be called once at startup, before all other cache calls) */
/*extern void xthal_cache_startinit( void );*/
/* reset caches */
/*extern void xthal_icache_reset( void );*/
/*extern void xthal_dcache_reset( void );*/
/* enable caches */
extern void xthal_icache_enable( void );	/* DEPRECATED */
extern void xthal_dcache_enable( void );	/* DEPRECATED */
/* disable caches */
extern void xthal_icache_disable( void );	/* DEPRECATED */
extern void xthal_dcache_disable( void );	/* DEPRECATED */

/* invalidate the caches */
extern void xthal_icache_all_invalidate( void );
extern void xthal_dcache_all_invalidate( void );
extern void xthal_icache_region_invalidate( void *addr, unsigned size );
extern void xthal_dcache_region_invalidate( void *addr, unsigned size );
extern void xthal_icache_line_invalidate(void *addr);
extern void xthal_dcache_line_invalidate(void *addr);
/* write dirty data back */
extern void xthal_dcache_all_writeback( void );
extern void xthal_dcache_region_writeback( void *addr, unsigned size );
extern void xthal_dcache_line_writeback(void *addr);
/* write dirty data back and invalidate */
extern void xthal_dcache_all_writeback_inv( void );
extern void xthal_dcache_region_writeback_inv( void *addr, unsigned size );
extern void xthal_dcache_line_writeback_inv(void *addr);
/* prefetch and lock specified memory range into cache */
extern void xthal_icache_region_lock( void *addr, unsigned size );
extern void xthal_dcache_region_lock( void *addr, unsigned size );
extern void xthal_icache_line_lock(void *addr);
extern void xthal_dcache_line_lock(void *addr);
/* unlock from cache */
extern void xthal_icache_all_unlock( void );
extern void xthal_dcache_all_unlock( void );
extern void xthal_icache_region_unlock( void *addr, unsigned size );
extern void xthal_dcache_region_unlock( void *addr, unsigned size );
extern void xthal_icache_line_unlock(void *addr);
extern void xthal_dcache_line_unlock(void *addr);


/* sync icache and memory */
extern void xthal_icache_sync( void );
/* sync dcache and memory */
extern void xthal_dcache_sync( void );

/*----------------------------------------------------------------------
   				Debug
  ----------------------------------------------------------------------*/

/*  1 if debug option configured, 0 if not:  */
extern const int Xthal_debug_configured;

/*  Number of instruction and data break registers:  */
extern const int Xthal_num_ibreak;
extern const int Xthal_num_dbreak;

/*  Set (plant) and remove software breakpoint, both synchronizing cache:  */
extern unsigned int xthal_set_soft_break(void *addr);
extern void         xthal_remove_soft_break(void *addr, unsigned int);


/*----------------------------------------------------------------------
   				Disassembler
  ----------------------------------------------------------------------*/

/*  Max expected size of the return buffer for a disassembled instruction (hint only):  */
#define XTHAL_DISASM_BUFSIZE	80

/*  Disassembly option bits for selecting what to return:  */
#define XTHAL_DISASM_OPT_ADDR	0x0001	/* display address */
#define XTHAL_DISASM_OPT_OPHEX	0x0002	/* display opcode bytes in hex */
#define XTHAL_DISASM_OPT_OPCODE	0x0004	/* display opcode name (mnemonic) */
#define XTHAL_DISASM_OPT_PARMS	0x0008	/* display parameters */
#define XTHAL_DISASM_OPT_ALL	0x0FFF	/* display everything */

/* routine to get a string for the disassembled instruction */
extern int xthal_disassemble( unsigned char *instr_buf, void *tgt_addr,
		       char *buffer, unsigned buflen, unsigned options );

/* routine to get the size of the next instruction. Returns 0 for
   illegal instruction */
extern int xthal_disassemble_size( unsigned char *instr_buf );


/*----------------------------------------------------------------------
   				Core Counter
  ----------------------------------------------------------------------*/

/* counter info */
extern const unsigned char Xthal_have_ccount;	/* set if CCOUNT register present */
extern const unsigned char Xthal_num_ccompare;	/* number of CCOMPAREn registers */

/* get CCOUNT register (if not present return 0) */
extern unsigned xthal_get_ccount(void);

/* set and get CCOMPAREn registers (if not present, get returns 0) */
extern void     xthal_set_ccompare(int, unsigned);
extern unsigned xthal_get_ccompare(int);


/*----------------------------------------------------------------------
			Instruction/Data RAM/ROM Access
  ----------------------------------------------------------------------*/

extern void* xthal_memcpy(void *dst, const void *src, unsigned len);
extern void* xthal_bcopy(const void *src, void *dst, unsigned len);

/*----------------------------------------------------------------------
                           MP Synchronization
  ----------------------------------------------------------------------*/
extern int      xthal_compare_and_set( int *addr, int test_val, int compare_val );
extern unsigned xthal_get_prid( void );