201 lines
5.7 KiB
C
201 lines
5.7 KiB
C
/* $Id$ */
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/* $NetBSD: tcvar.h,v 1.13 1998/05/22 21:15:48 thorpej 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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/*
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* In the long run, the following block will go completely away.
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* For now, the MI TC code still uses the old TC_IPL_ names
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* and not the new IPL_ names.
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*/
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#if 1
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/*
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* 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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#endif /* 1 */
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typedef u_int64_t tc_addr_t;
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typedef int32_t tc_offset_t;
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#define tc_mb() alpha_mb()
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#define tc_wmb() alpha_wmb()
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/*
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* A junk address to read from, to make sure writes are complete. See
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* System Programmer's Manual, section 9.3 (p. 9-4), and sacrifice a
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* chicken.
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*/
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#define tc_syncbus() \
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do { \
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volatile u_int32_t no_optimize; \
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no_optimize = \
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*(volatile u_int32_t *)ALPHA_PHYS_TO_K0SEG(0x00000001f0080220); \
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} while (0)
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#define tc_badaddr(tcaddr) \
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badaddr((void *)(tcaddr), sizeof (u_int32_t))
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#define TC_SPACE_IND 0xffffffffe0000003
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#define TC_SPACE_DENSE 0x0000000000000000
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#define TC_SPACE_DENSE_OFFSET 0x0000000007fffffc
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#define TC_SPACE_SPARSE 0x0000000010000000
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#define TC_SPACE_SPARSE_OFFSET 0x000000000ffffff8
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#define TC_DENSE_TO_SPARSE(addr) \
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(((addr) & TC_SPACE_IND) | TC_SPACE_SPARSE | \
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(((addr) & TC_SPACE_DENSE_OFFSET) << 1))
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#define TC_PHYS_TO_UNCACHED(addr) \
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(addr)
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/*
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* These functions are private, and may not be called by
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* machine-independent code.
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*/
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void tc_dma_init __P((void));
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/*
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* Address of scatter/gather SRAM on the 3000/500-series.
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*
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* There is room for 32K entries, yielding 256M of sgva space.
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* The page table is readable in both dense and sparse space.
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* The page table is writable only in sparse space.
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*
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* In sparse space, the 32-bit PTEs are followed by 32-bits
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* of pad.
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*/
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#define TC_SGSRAM_DENSE 0x0000001c2800000UL
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#define TC_SGSRAM_SPARSE 0x0000001d5000000UL
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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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* 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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/* bus_space_tag_t tba_memt;*/
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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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/*
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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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/*
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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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/*
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bus_space_tag_t ta_memt;
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bus_dma_tag_t ta_dmat;
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*/
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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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* 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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#if 0
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#include "locators.h"
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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[TCCF_SLOT] /* slot */
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#define tccf_offset cf_loc[TCCF_OFFSET] /* offset */
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#endif
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#define TCCF_SLOT_UNKNOWN TCCF_SLOT_DEFAULT
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#define TCCF_OFFSET_UNKNOWN TCCF_OFFSET_DEFAULT
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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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#endif /* __DEV_TC_TCVAR_H__ */
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