178 lines
4.4 KiB
C
178 lines
4.4 KiB
C
/* $NetBSD: tcvar.h,v 1.7 1996/10/22 21:37:31 cgd Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef __DEV_TC_TCVAR_H__
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#define __DEV_TC_TCVAR_H__
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/*
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* Definitions for TurboChannel autoconfiguration.
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*/
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#ifdef __alpha__ /* XXX pmax does not yet have machine/bus.h */
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#include <machine/bus.h>
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#endif
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#include <dev/tc/tcreg.h>
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/*
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* Machine-dependent definitions.
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*/
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#if (alpha + pmax != 1)
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ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
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#endif
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#if alpha
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#include <alpha/tc/tc_machdep.h>
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#endif
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#if pmax
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#include <machine/tc_machdep.h>
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#endif
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/*
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* In the long run, the following block will go completely away
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* (i.e. both parts of the #if, including the #include, etc.).
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* For now, the MI TC code still uses the old definitions provided
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* by the pmax port, and not the new definitions provided by the
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* alpha port.
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*/
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#ifdef __alpha__
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/*
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* On the alpha, map the new definitions to the old.
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*/
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#include <machine/intr.h>
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#define tc_intrlevel_t int
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#define TC_IPL_NONE IPL_NONE
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#define TC_IPL_BIO IPL_BIO
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#define TC_IPL_NET IPL_NET
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#define TC_IPL_TTY IPL_TTY
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#define TC_IPL_CLOCK IPL_CLOCK
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#else
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/*
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* On the pmax, we still need the old definitions.
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*/
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typedef enum {
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TC_IPL_NONE, /* block only this interrupt */
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TC_IPL_BIO, /* block disk interrupts */
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TC_IPL_NET, /* block network interrupts */
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TC_IPL_TTY, /* block terminal interrupts */
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TC_IPL_CLOCK, /* block clock interrupts */
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} tc_intrlevel_t;
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#endif
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/*
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* Arguments used to attach TurboChannel busses.
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*/
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struct tcbus_attach_args {
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char *tba_busname; /* XXX should be common */
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#ifdef __alpha__ /* XXX */
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bus_space_tag_t tba_memt;
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#endif
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/* Bus information */
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u_int tba_speed; /* see TC_SPEED_* below */
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u_int tba_nslots;
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struct tc_slotdesc *tba_slots;
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u_int tba_nbuiltins;
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const struct tc_builtin *tba_builtins;
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/* TC bus resource management; XXX will move elsewhere eventually. */
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void (*tba_intr_establish) __P((struct device *, void *,
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tc_intrlevel_t, int (*)(void *), void *));
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void (*tba_intr_disestablish) __P((struct device *, void *));
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};
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/*
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* Arguments used to attach TurboChannel devices.
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*/
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struct tc_attach_args {
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#ifdef __alpha__ /* XXX */
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bus_space_tag_t ta_memt;
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#endif
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char ta_modname[TC_ROM_LLEN+1];
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u_int ta_slot;
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tc_offset_t ta_offset;
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tc_addr_t ta_addr;
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void *ta_cookie;
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u_int ta_busspeed; /* see TC_SPEED_* below */
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};
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/*
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* Description of TurboChannel slots, provided by machine-dependent
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* code to the TurboChannel bus driver.
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*/
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struct tc_slotdesc {
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tc_addr_t tcs_addr;
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void *tcs_cookie;
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int tcs_used;
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};
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/*
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* Description of built-in TurboChannel devices, provided by
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* machine-dependent code to the TurboChannel bus driver.
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*/
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struct tc_builtin {
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char *tcb_modname;
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u_int tcb_slot;
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tc_offset_t tcb_offset;
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void *tcb_cookie;
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};
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/*
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* Interrupt establishment functions.
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*/
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void tc_intr_establish __P((struct device *, void *, tc_intrlevel_t,
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int (*)(void *), void *));
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void tc_intr_disestablish __P((struct device *, void *));
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/*
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* Easy to remember names for TurboChannel device locators.
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*/
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#define tccf_slot cf_loc[0] /* slot */
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#define tccf_offset cf_loc[1] /* offset */
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#define TCCF_SLOT_UNKNOWN -1
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#define TCCF_OFFSET_UNKNOWN -1
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/*
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* Miscellaneous definitions.
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*/
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#define TC_SPEED_12_5_MHZ 0 /* 12.5MHz TC bus */
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#define TC_SPEED_25_MHZ 1 /* 25MHz TC bus */
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/*
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* The TurboChannel bus cfdriver, so that subdevices can more
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* easily tell what bus they're on.
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*/
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extern struct cfdriver tc_cd;
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#endif /* __DEV_TC_TCVAR_H__ */
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