1 /* $NetBSD: uba_bi.c,v 1.4 1999/07/12 13:43:40 ragge 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/param.h> 38 #include <sys/kernel.h> 39 #include <sys/buf.h> 40 #include <sys/device.h> 41 #include <sys/proc.h> 42 #include <sys/user.h> 43 #include <sys/malloc.h> 44 #include <sys/systm.h> 45 46 #include <machine/sid.h> 47 #include <machine/pte.h> 48 #include <machine/pcb.h> 49 #include <machine/trap.h> 50 #include <machine/scb.h> 51 52 #include <vax/bi/bireg.h> 53 #include <vax/bi/bivar.h> 54 55 #include <vax/uba/ubareg.h> 56 #include <vax/uba/ubavar.h> 57 58 #include "locators.h" 59 60 #define BUA(uba) ((struct dwbua_regs *)(uba)) 61 62 static int uba_bi_match __P((struct device *, struct cfdata *, void *)); 63 static void uba_bi_attach __P((struct device *, struct device *, void *)); 64 static void bua_init __P((struct uba_softc *)); 65 static void bua_purge __P((struct uba_softc *, int)); 66 67 /* bua_csr */ 68 #define BUACSR_ERR 0x80000000 /* composite error */ 69 #define BUACSR_BIF 0x10000000 /* BI failure */ 70 #define BUACSR_SSYNTO 0x08000000 /* slave sync timeout */ 71 #define BUACSR_UIE 0x04000000 /* unibus interlock error */ 72 #define BUACSR_IVMR 0x02000000 /* invalid map register */ 73 #define BUACSR_BADBDP 0x01000000 /* bad BDP select */ 74 #define BUACSR_BUAEIE 0x00100000 /* bua error interrupt enable (?) */ 75 #define BUACSR_UPI 0x00020000 /* unibus power init */ 76 #define BUACSR_UREGDUMP 0x00010000 /* microdiag register dump */ 77 #define BUACSR_IERRNO 0x000000ff /* mask for internal errror number */ 78 79 /* bua_offset */ 80 #define BUAOFFSET_MASK 0x00003e00 /* hence max offset = 15872 */ 81 82 /* bua_dpr */ 83 #define BUADPR_DPSEL 0x00e00000 /* data path select (?) */ 84 #define BUADPR_PURGE 0x00000001 /* purge bdp */ 85 86 /* bua_map -- in particular, those bits that are not in DW780s & DW750s */ 87 #define BUAMR_IOADR 0x40000000 /* I/O address space */ 88 #define BUAMR_LAE 0x04000000 /* longword access enable */ 89 90 static int allocvec; 91 92 struct cfattach uba_bi_ca = { 93 sizeof(struct uba_softc), uba_bi_match, uba_bi_attach, 94 }; 95 96 struct dwbua_regs { 97 struct biiregs bn_biic; /* interface */ 98 int pad1[396]; 99 int bn_csr; 100 int bn_vor; /* Vector offset from SCB */ 101 int bn_fubar; /* Failed Unibus address register */ 102 int bn_bifar; /* BI failed address register */ 103 int bn_mdiag[5]; /* microdiag regs for BDP */ 104 int pad2[3]; 105 int bn_dpcsr[6]; /* Data path control and status register */ 106 int pad3[38]; 107 struct pte bn_map[UBAPAGES]; /* Unibus map registers */ 108 int pad4[UBAIOPAGES]; 109 }; 110 111 /* 112 * Poke at a supposed DWBUA to see if it is there. 113 */ 114 static int 115 uba_bi_match(parent, cf, aux) 116 struct device *parent; 117 struct cfdata *cf; 118 void *aux; 119 { 120 struct bi_attach_args *ba = aux; 121 122 if ((ba->ba_node->biic.bi_dtype != BIDT_DWBUA) && 123 (ba->ba_node->biic.bi_dtype != BIDT_KLESI)) 124 return 0; 125 126 if (cf->cf_loc[BICF_NODE] != BICF_NODE_DEFAULT && 127 cf->cf_loc[BICF_NODE] != ba->ba_nodenr) 128 return 0; 129 130 return 1; 131 } 132 133 void 134 uba_bi_attach(parent, self, aux) 135 struct device *parent, *self; 136 void *aux; 137 { 138 struct uba_softc *sc = (void *)self; 139 struct bi_attach_args *ba = aux; 140 volatile int timo; 141 142 if (ba->ba_node->biic.bi_dtype == BIDT_DWBUA) 143 printf(": DWBUA\n"); 144 else 145 printf(": KLESI-B\n"); 146 147 /* 148 * Fill in bus specific data. 149 */ 150 sc->uh_uba = (void *)ba->ba_node; 151 sc->uh_nbdp = NBDPBUA; 152 /* sc->uh_nr is 0; uninteresting here */ 153 /* sc->uh_afterscan; not used */ 154 /* sc->uh_errchk; not used */ 155 /* sc->uh_beforescan */ 156 sc->uh_ubapurge = bua_purge; 157 sc->uh_ubainit = bua_init; 158 /* sc->uh_type not used */ 159 sc->uh_memsize = UBAPAGES; 160 sc->uh_mr = BUA(sc->uh_uba)->bn_map; 161 162 #ifdef notdef 163 /* Can we get separate interrupts? */ 164 scb->scb_nexvec[1][ba->ba_nodenr] = &sc->sc_ivec; 165 #endif 166 BUA(sc->uh_uba)->bn_biic.bi_csr |= BICSR_ARB_NONE; 167 BUA(sc->uh_uba)->bn_biic.bi_csr |= BICSR_STS | BICSR_INIT; 168 DELAY(1000); 169 timo = 1000; 170 while (BUA(sc->uh_uba)->bn_biic.bi_csr & BICSR_BROKE) 171 if (timo == 0) { 172 printf("%s: BROKE bit set\n", self->dv_xname); 173 return; 174 } 175 176 BUA(sc->uh_uba)->bn_biic.bi_intrdes = ba->ba_intcpu; 177 BUA(sc->uh_uba)->bn_biic.bi_csr = 178 (BUA(sc->uh_uba)->bn_biic.bi_csr&~BICSR_ARB_MASK) | BICSR_ARB_HIGH; 179 BUA(sc->uh_uba)->bn_vor = VAX_NBPG + (VAX_NBPG * allocvec++); 180 181 uba_attach(sc, BUA(sc->uh_uba)->bn_biic.bi_sadr + UBAPAGES * VAX_NBPG); 182 } 183 184 185 void 186 bua_init(sc) 187 struct uba_softc *sc; 188 { 189 BUA(sc->uh_uba)->bn_csr |= BUACSR_UPI; 190 DELAY(500000); 191 }; 192 193 void 194 bua_purge(sc, bdp) 195 struct uba_softc *sc; 196 int bdp; 197 { 198 BUA(sc->uh_uba)->bn_dpcsr[bdp] |= BUADPR_PURGE; 199 } 200