/* atm_zatm.h - Driver-specific declarations of the ZATM driver (for use by
  		driver-specific utilities) */
  
  /* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
  
  
  #ifndef LINUX_ATM_ZATM_H
  #define LINUX_ATM_ZATM_H
  
  /*
   * Note: non-kernel programs including this file must also include
   * sys/types.h for struct timeval
   */
  
  #include <linux/atmapi.h>
  #include <linux/atmioc.h>
  
  #define ZATM_GETPOOL	_IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)
  						/* get pool statistics */
  #define ZATM_GETPOOLZ	_IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
  						/* get statistics and zero */
  #define ZATM_SETPOOL	_IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)
  						/* set pool parameters */
  
  struct zatm_pool_info {
  	int ref_count;			/* free buffer pool usage counters */
  	int low_water,high_water;	/* refill parameters */
  	int rqa_count,rqu_count;	/* queue condition counters */
  	int offset,next_off;		/* alignment optimizations: offset */
  	int next_cnt,next_thres;	/* repetition counter and threshold */
  };
  
  struct zatm_pool_req {
  	int pool_num;			/* pool number */
  	struct zatm_pool_info info;	/* actual information */
  };
  
  struct zatm_t_hist {
  	struct timeval real;		/* real (wall-clock) time */
  	struct timeval expected;	/* expected real time */
  };
  
  
  #define ZATM_OAM_POOL		0	/* free buffer pool for OAM cells */
  #define ZATM_AAL0_POOL		1	/* free buffer pool for AAL0 cells */
  #define ZATM_AAL5_POOL_BASE	2	/* first AAL5 free buffer pool */
  #define ZATM_LAST_POOL	ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */
  
  #define ZATM_TIMER_HISTORY_SIZE	16	/* number of timer adjustments to
  					   record; must be 2^n */
  
  #endif