uba_bi.c revision 1.8
1/* $NetBSD: uba_bi.c,v 1.8 2002/10/02 16:33:39 thorpej Exp $ */ 2/* 3 * Copyright (c) 1998 Ludd, University of Lule}, Sweden. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed at Ludd, University of 17 * Lule}, Sweden and its contributors. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * DWBUA BI-Unibus adapter 35 */ 36 37#include <sys/cdefs.h> 38__KERNEL_RCSID(0, "$NetBSD: uba_bi.c,v 1.8 2002/10/02 16:33:39 thorpej Exp $"); 39 40#include <sys/param.h> 41#include <sys/kernel.h> 42#include <sys/buf.h> 43#include <sys/device.h> 44#include <sys/proc.h> 45#include <sys/user.h> 46#include <sys/malloc.h> 47#include <sys/systm.h> 48 49#include <machine/sid.h> 50#include <machine/pte.h> 51#include <machine/pcb.h> 52#include <machine/trap.h> 53#include <machine/scb.h> 54 55#include <vax/bi/bireg.h> 56#include <vax/bi/bivar.h> 57 58#include <vax/uba/ubareg.h> 59#include <vax/uba/ubavar.h> 60 61#include "locators.h" 62 63#define BUA(uba) ((struct dwbua_regs *)(uba)) 64 65static int uba_bi_match __P((struct device *, struct cfdata *, void *)); 66static void uba_bi_attach __P((struct device *, struct device *, void *)); 67static void bua_init __P((struct uba_softc *)); 68static void bua_purge __P((struct uba_softc *, int)); 69 70/* bua_csr */ 71#define BUACSR_ERR 0x80000000 /* composite error */ 72#define BUACSR_BIF 0x10000000 /* BI failure */ 73#define BUACSR_SSYNTO 0x08000000 /* slave sync timeout */ 74#define BUACSR_UIE 0x04000000 /* unibus interlock error */ 75#define BUACSR_IVMR 0x02000000 /* invalid map register */ 76#define BUACSR_BADBDP 0x01000000 /* bad BDP select */ 77#define BUACSR_BUAEIE 0x00100000 /* bua error interrupt enable (?) */ 78#define BUACSR_UPI 0x00020000 /* unibus power init */ 79#define BUACSR_UREGDUMP 0x00010000 /* microdiag register dump */ 80#define BUACSR_IERRNO 0x000000ff /* mask for internal errror number */ 81 82/* bua_offset */ 83#define BUAOFFSET_MASK 0x00003e00 /* hence max offset = 15872 */ 84 85/* bua_dpr */ 86#define BUADPR_DPSEL 0x00e00000 /* data path select (?) */ 87#define BUADPR_PURGE 0x00000001 /* purge bdp */ 88 89/* bua_map -- in particular, those bits that are not in DW780s & DW750s */ 90#define BUAMR_IOADR 0x40000000 /* I/O address space */ 91#define BUAMR_LAE 0x04000000 /* longword access enable */ 92 93static int allocvec; 94 95CFATTACH_DECL(uba_bi, sizeof(struct uba_softc), 96 uba_bi_match, uba_bi_attach, NULL, NULL); 97 98struct dwbua_regs { 99 struct biiregs bn_biic; /* interface */ 100 int pad1[396]; 101 int bn_csr; 102 int bn_vor; /* Vector offset from SCB */ 103 int bn_fubar; /* Failed Unibus address register */ 104 int bn_bifar; /* BI failed address register */ 105 int bn_mdiag[5]; /* microdiag regs for BDP */ 106 int pad2[3]; 107 int bn_dpcsr[6]; /* Data path control and status register */ 108 int pad3[38]; 109 struct pte bn_map[UBAPAGES]; /* Unibus map registers */ 110 int pad4[UBAIOPAGES]; 111}; 112 113/* 114 * Poke at a supposed DWBUA to see if it is there. 115 */ 116static int 117uba_bi_match(parent, cf, aux) 118 struct device *parent; 119 struct cfdata *cf; 120 void *aux; 121{ 122 struct bi_attach_args *ba = aux; 123 124 if ((ba->ba_node->biic.bi_dtype != BIDT_DWBUA) && 125 (ba->ba_node->biic.bi_dtype != BIDT_KLESI)) 126 return 0; 127 128 if (cf->cf_loc[BICF_NODE] != BICF_NODE_DEFAULT && 129 cf->cf_loc[BICF_NODE] != ba->ba_nodenr) 130 return 0; 131 132 return 1; 133} 134 135void 136uba_bi_attach(parent, self, aux) 137 struct device *parent, *self; 138 void *aux; 139{ 140 struct uba_softc *sc = (void *)self; 141 struct bi_attach_args *ba = aux; 142 volatile int timo; 143 144 if (ba->ba_node->biic.bi_dtype == BIDT_DWBUA) 145 printf(": DWBUA\n"); 146 else 147 printf(": KLESI-B\n"); 148 149 /* 150 * Fill in bus specific data. 151 */ 152 sc->uh_uba = (void *)ba->ba_node; 153 sc->uh_nbdp = NBDPBUA; 154/* sc->uh_nr is 0; uninteresting here */ 155/* sc->uh_afterscan; not used */ 156/* sc->uh_errchk; not used */ 157/* sc->uh_beforescan */ 158 sc->uh_ubapurge = bua_purge; 159 sc->uh_ubainit = bua_init; 160/* sc->uh_type not used */ 161 sc->uh_memsize = UBAPAGES; 162 sc->uh_mr = BUA(sc->uh_uba)->bn_map; 163 164#ifdef notdef 165 /* Can we get separate interrupts? */ 166 scb->scb_nexvec[1][ba->ba_nodenr] = &sc->sc_ivec; 167#endif 168 BUA(sc->uh_uba)->bn_biic.bi_csr |= BICSR_ARB_NONE; 169 BUA(sc->uh_uba)->bn_biic.bi_csr |= BICSR_STS | BICSR_INIT; 170 DELAY(1000); 171 timo = 1000; 172 while (BUA(sc->uh_uba)->bn_biic.bi_csr & BICSR_BROKE) 173 if (timo == 0) { 174 printf("%s: BROKE bit set\n", self->dv_xname); 175 return; 176 } 177 178 BUA(sc->uh_uba)->bn_biic.bi_intrdes = ba->ba_intcpu; 179 BUA(sc->uh_uba)->bn_biic.bi_csr = 180 (BUA(sc->uh_uba)->bn_biic.bi_csr&~BICSR_ARB_MASK) | BICSR_ARB_HIGH; 181 BUA(sc->uh_uba)->bn_vor = VAX_NBPG + (VAX_NBPG * allocvec++); 182 183 uba_attach(sc, BUA(sc->uh_uba)->bn_biic.bi_sadr + UBAPAGES * VAX_NBPG); 184} 185 186 187void 188bua_init(sc) 189 struct uba_softc *sc; 190{ 191 BUA(sc->uh_uba)->bn_csr |= BUACSR_UPI; 192 DELAY(500000); 193}; 194 195void 196bua_purge(sc, bdp) 197 struct uba_softc *sc; 198 int bdp; 199{ 200 BUA(sc->uh_uba)->bn_dpcsr[bdp] |= BUADPR_PURGE; 201} 202