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tcvar.h revision 1.11 
      1 /*	$NetBSD: tcvar.h,v 1.11 1998/01/19 02:51:40 thorpej 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  * Definitions for TurboChannel autoconfiguration.
     35  */
     36 
     37 #include <machine/bus.h>
     38 #include <dev/tc/tcreg.h>
     39 
     40 /*
     41  * Machine-dependent definitions.
     42  */
     43 #if (alpha + pmax != 1)
     44 ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
     45 #endif
     46 #if alpha
     47 #include <alpha/tc/tc_machdep.h>
     48 #endif
     49 #if pmax
     50 #include <machine/tc_machdep.h>
     51 #endif
     52 
     53 /*
     54  * In the long run, the following block will go completely away
     55  * (i.e. both parts of the #if, including the #include, etc.).
     56  * For now, the MI TC code still uses the old definitions provided
     57  * by the pmax port, and not the new definitions provided by the
     58  * alpha port.
     59  */
     60 #ifdef __alpha__
     61 /*
     62  * On the alpha, map the new definitions to the old.
     63  */
     64 #include <machine/intr.h>
     65 
     66 #define tc_intrlevel_t	int
     67 
     68 #define	TC_IPL_NONE	IPL_NONE
     69 #define	TC_IPL_BIO	IPL_BIO
     70 #define	TC_IPL_NET	IPL_NET
     71 #define	TC_IPL_TTY	IPL_TTY
     72 #define	TC_IPL_CLOCK	IPL_CLOCK
     73 
     74 #else
     75 /*
     76  * On the pmax, we still need the old definitions.
     77  */
     78 typedef enum {
     79 	TC_IPL_NONE,			/* block only this interrupt */
     80 	TC_IPL_BIO,			/* block disk interrupts */
     81 	TC_IPL_NET,			/* block network interrupts */
     82 	TC_IPL_TTY,			/* block terminal interrupts */
     83 	TC_IPL_CLOCK,			/* block clock interrupts */
     84 } tc_intrlevel_t;
     85 #endif
     86 
     87 /*
     88  * Arguments used to attach TurboChannel busses.
     89  */
     90 struct tcbus_attach_args {
     91 	char		*tba_busname;		/* XXX should be common */
     92 	bus_space_tag_t tba_memt;
     93 
     94 	/* Bus information */
     95 	u_int		tba_speed;		/* see TC_SPEED_* below */
     96 	u_int		tba_nslots;
     97 	struct tc_slotdesc *tba_slots;
     98 	u_int		tba_nbuiltins;
     99 	const struct tc_builtin *tba_builtins;
    100 
    101 
    102 	/* TC bus resource management; XXX will move elsewhere eventually. */
    103 	void	(*tba_intr_establish) __P((struct device *, void *,
    104 		    tc_intrlevel_t, int (*)(void *), void *));
    105 	void	(*tba_intr_disestablish) __P((struct device *, void *));
    106 #ifdef __alpha__
    107 	bus_dma_tag_t (*tba_get_dma_tag) __P((int));
    108 #endif
    109 };
    110 
    111 /*
    112  * Arguments used to attach TurboChannel devices.
    113  */
    114 struct tc_attach_args {
    115 	bus_space_tag_t ta_memt;
    116 #ifdef __alpha__
    117 	bus_dma_tag_t	ta_dmat;
    118 #endif
    119 
    120 	char		ta_modname[TC_ROM_LLEN+1];
    121 	u_int		ta_slot;
    122 	tc_offset_t	ta_offset;
    123 	tc_addr_t	ta_addr;
    124 	void		*ta_cookie;
    125 	u_int		ta_busspeed;		/* see TC_SPEED_* below */
    126 };
    127 
    128 /*
    129  * Description of TurboChannel slots, provided by machine-dependent
    130  * code to the TurboChannel bus driver.
    131  */
    132 struct tc_slotdesc {
    133 	tc_addr_t	tcs_addr;
    134 	void		*tcs_cookie;
    135 	int		tcs_used;
    136 };
    137 
    138 /*
    139  * Description of built-in TurboChannel devices, provided by
    140  * machine-dependent code to the TurboChannel bus driver.
    141  */
    142 struct tc_builtin {
    143 	char		*tcb_modname;
    144 	u_int		tcb_slot;
    145 	tc_offset_t	tcb_offset;
    146 	void		*tcb_cookie;
    147 };
    148 
    149 /*
    150  * Interrupt establishment functions.
    151  */
    152 void	tc_intr_establish __P((struct device *, void *, tc_intrlevel_t,
    153 	    int (*)(void *), void *));
    154 void	tc_intr_disestablish __P((struct device *, void *));
    155 
    156 #include "locators.h"
    157 /*
    158  * Easy to remember names for TurboChannel device locators.
    159  */
    160 #define	tccf_slot	cf_loc[TCCF_SLOT]		/* slot */
    161 #define	tccf_offset	cf_loc[TCCF_OFFSET]		/* offset */
    162 
    163 #define	TCCF_SLOT_UNKNOWN	TCCF_SLOT_DEFAULT
    164 #define	TCCF_OFFSET_UNKNOWN	TCCF_OFFSET_DEFAULT
    165 
    166 /*
    167  * Miscellaneous definitions.
    168  */
    169 #define	TC_SPEED_12_5_MHZ	0		/* 12.5MHz TC bus */
    170 #define	TC_SPEED_25_MHZ		1		/* 25MHz TC bus */
    171 
    172 #endif /* __DEV_TC_TCVAR_H__ */
    173