1 /* $NetBSD: tc_machdep.h,v 1.3 2008/03/11 05:34:02 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Jonathan Stone, 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@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 /* 31 * Machine-specific definitions for TURBOchannel support. 32 * 33 * This file must typedef the following types: 34 * 35 * tc_addr_t TURBOchannel bus address 36 * tc_offset_t TURBOchannel bus address difference (offset) 37 * 38 * This file must prototype or define the following functions 39 * or macros (one or more of which may be no-ops): 40 * 41 * tc_mb() read/write memory barrier (any CPU<->memory 42 * reads/writes before must complete before any 43 * CPU<->memory reads/writes after). 44 * tc_wmb() write memory barrier (any CPU<->memory writes 45 * before must complete before any CPU<->memory 46 * writes after). 47 * tc_syncbus() sync TC bus; make sure CPU writes are 48 * propagated across the TURBOchannel bus. 49 * tc_badaddr() return non-zero if the given address is invalid. 50 * TC_DENSE_TO_SPARSE() 51 * convert the given physical address in 52 * TURBOchannel dense space to the corresponding 53 * address in TURBOchannel sparse space. 54 * TC_PHYS_TO_UNCACHED() 55 * convert the given system memory physical address 56 * to the physical address of the corresponding 57 * region that is not cached. 58 */ 59 60 #ifndef _VAX_TC_MACHDEP_H_ 61 #define _VAX_TC_MACHDEP_H_ 62 63 #include <machine/cpu.h> /* for badaddr */ 64 65 typedef uint32_t tc_addr_t; 66 typedef uint32_t tc_offset_t; 67 68 #define tc_mb() do { } while (/*CONSTCOND*/ 0) 69 #define tc_wmb() do { } while (/*CONSTCOND*/ 0) 70 #define tc_syncbus() do { } while (/*CONSTCOND*/ 0) 71 72 #define tc_badaddr(tcaddr) badaddr((void *)(tcaddr), sizeof (uint32_t)) 73 74 #define TC_DENSE_TO_SPARSE(addr) (addr) 75 #define TC_PHYS_TO_UNCACHED(addr) (addr) 76 #define VAX_PHYS_TO_S0(addr) ((addr) | KERNBASE) 77 78 /* 79 * Use the following macros to compare device names on a vax, as 80 * the autoconfig structs are in a state of flux. 81 */ 82 #define TC_BUS_MATCHNAME(ta, name) \ 83 (strncmp( (ta)->ta_modname, (name), TC_ROM_LLEN+1) == 0) 84 85 #endif /* _VAX_TC_MACHDEP_H_ */ 86