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tcvar.h revision 1.3 
      1 /*	$NetBSD: tcvar.h,v 1.3 1996/02/27 01:37:33 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #ifndef __DEV_TC_TCVAR_H__
     31 #define __DEV_TC_TCVAR_H__
     32 
     33 /*
     34  * TurboChannel autoconfiguration definitions.
     35  */
     36 
     37 #include <dev/tc/tcreg.h>
     38 #include <machine/tc_machdep.h>
     39 
     40 /*
     41  * Interrupt levels.  XXX should be common, elsewhere.
     42  */
     43 typedef enum {
     44 	TC_IPL_NONE,			/* block only this interrupt */
     45 	TC_IPL_BIO,			/* block disk interrupts */
     46 	TC_IPL_NET,			/* block network interrupts */
     47 	TC_IPL_TTY,			/* block terminal interrupts */
     48 	TC_IPL_CLOCK,			/* block clock interrupts */
     49 } tc_intrlevel_t;
     50 
     51 /*
     52  * Arguments used to attach TurboChannel busses.
     53  */
     54 struct tcbus_attach_args {
     55 	char		*tba_busname;		/* XXX should be common */
     56 
     57 	/* Bus information */
     58 	u_int		tba_speed;		/* see TC_SPEED_* below */
     59 	u_int		tba_nslots;
     60 	struct tc_slotdesc *tba_slots;
     61 	u_int		tba_nbuiltins;
     62 	const struct tc_builtin *tba_builtins;
     63 
     64 
     65 	/* TC bus resource management; XXX will move elsewhere eventually. */
     66 	void	(*tba_intr_establish) __P((struct device *, void *,
     67 		    tc_intrlevel_t, int (*)(void *), void *));
     68 	void	(*tba_intr_disestablish) __P((struct device *, void *));
     69 };
     70 
     71 /*
     72  * Arguments used to attach TurboChannel devices.
     73  */
     74 struct tc_attach_args {
     75 	char		ta_modname[TC_ROM_LLEN+1];
     76 	u_int		ta_slot;
     77 	tc_offset_t	ta_offset;
     78 	tc_addr_t	ta_addr;
     79 	void		*ta_cookie;
     80 	u_int		ta_busspeed;		/* see TC_SPEED_* below */
     81 };
     82 
     83 /*
     84  * Description of TurboChannel slots, provided by machine-dependent
     85  * code to the TurboChannel bus driver.
     86  */
     87 struct tc_slotdesc {
     88 	tc_addr_t	tcs_addr;
     89 	void		*tcs_cookie;
     90 	int		tcs_used;
     91 };
     92 
     93 /*
     94  * Description of built-in TurboChannel devices, provided by
     95  * machine-dependent code to the TurboChannel bus driver.
     96  */
     97 struct tc_builtin {
     98 	char		*tcb_modname;
     99 	u_int		tcb_slot;
    100 	tc_offset_t	tcb_offset;
    101 	void		*tcb_cookie;
    102 };
    103 
    104 /*
    105  * Interrupt establishment functions.
    106  */
    107 void	tc_intr_establish __P((struct device *, void *, tc_intrlevel_t,
    108 	    int (*)(void *), void *));
    109 void	tc_intr_disestablish __P((struct device *, void *));
    110 
    111 /*
    112  * Easy to remember names for TurboChannel device locators.
    113  */
    114 #define	tccf_slot	cf_loc[0]		/* slot */
    115 #define	tccf_offset	cf_loc[1]		/* offset */
    116 
    117 #define	TCCF_SLOT_UNKNOWN	-1
    118 #define	TCCF_OFFSET_UNKNOWN	-1
    119 
    120 /*
    121  * Miscellaneous definitions.
    122  */
    123 #define	TC_SPEED_12_5_MHZ	0		/* 12.5MHz TC bus */
    124 #define	TC_SPEED_25_MHZ		1		/* 25MHz TC bus */
    125 
    126 /*
    127  * The TurboChannel bus cfdriver, so that subdevices can more
    128  * easily tell what bus they're on.
    129  */
    130 extern struct cfdriver tccd;
    131 
    132 #endif /* __DEV_TC_TCVAR_H__ */
    133