1 /* $NetBSD: uba_sbi.c,v 1.12 2001/05/13 15:24:18 ragge Exp $ */ 2 /* 3 * Copyright (c) 1996 Jonathan Stone. 4 * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden. 5 * Copyright (c) 1982, 1986 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)uba.c 7.10 (Berkeley) 12/16/90 37 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 38 */ 39 40 #include <sys/param.h> 41 #include <sys/device.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 45 #define _VAX_BUS_DMA_PRIVATE 46 #include <machine/bus.h> 47 #include <machine/mtpr.h> 48 #include <machine/nexus.h> 49 #include <machine/cpu.h> 50 #include <machine/sgmap.h> 51 #include <machine/scb.h> 52 53 #include <dev/qbus/ubavar.h> 54 55 #include <vax/uba/uba_common.h> 56 57 #include "locators.h" 58 #include "ioconf.h" 59 60 /* Some SBI-specific defines */ 61 #define UBASIZE (UBAPAGES * VAX_NBPG) 62 #define UMEMA8600(i) (0x20100000+(i)*0x40000) 63 #define UMEMB8600(i) (0x22100000+(i)*0x40000) 64 65 /* 66 * Some status registers. 67 */ 68 #define UBACNFGR_UBIC 0x00010000 /* unibus init complete */ 69 #define UBACNFGR_BITS \ 70 "\40\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT\30ADPDN\27ADPUP\23UBINIT\22UBPDN\21UBIC" 71 72 #define UBACR_IFS 0x00000040 /* interrupt field switch */ 73 #define UBACR_BRIE 0x00000020 /* BR interrupt enable */ 74 #define UBACR_USEFIE 0x00000010 /* UNIBUS to SBI error field IE */ 75 #define UBACR_SUEFIE 0x00000008 /* SBI to UNIBUS error field IE */ 76 #define UBACR_ADINIT 0x00000001 /* adapter init */ 77 78 #define UBADPR_BNE 0x80000000 /* buffer not empty - purge */ 79 80 #define UBABRRVR_DIV 0x0000ffff /* device interrupt vector field */ 81 82 #define UBASR_BITS \ 83 "\20\13RDTO\12RDS\11CRD\10CXTER\7CXTMO\6DPPE\5IVMR\4MRPF\3LEB\2UBSTO\1UBSSYNTO" 84 85 char ubasr_bits[] = UBASR_BITS; 86 87 /* 88 * The DW780 are directly connected to the SBI on 11/780 and 8600. 89 */ 90 static int dw780_match(struct device *, struct cfdata *, void *); 91 static void dw780_attach(struct device *, struct device *, void *); 92 static void dw780_init(struct uba_softc*); 93 static void dw780_beforescan(struct uba_softc *); 94 static void dw780_afterscan(struct uba_softc *); 95 static int dw780_errchk(struct uba_softc *); 96 static void uba_dw780int(void *); 97 static void ubaerror(struct uba_softc *, int *, int *); 98 #ifdef notyet 99 static void dw780_purge(struct uba_softc *, int); 100 #endif 101 102 struct cfattach uba_sbi_ca = { 103 sizeof(struct uba_vsoftc), dw780_match, dw780_attach 104 }; 105 106 extern struct vax_bus_space vax_mem_bus_space; 107 108 volatile int svec; 109 110 int 111 dw780_match(struct device *parent, struct cfdata *cf, void *aux) 112 { 113 struct sbi_attach_args *sa = (struct sbi_attach_args *)aux; 114 115 if (cf->cf_loc[SBICF_TR] != sa->sa_nexnum && 116 cf->cf_loc[SBICF_TR] != SBICF_TR_DEFAULT) 117 return 0; 118 /* 119 * The uba type is actually only telling where the uba 120 * space is in nexus space. 121 */ 122 if ((sa->sa_type & ~3) != NEX_UBA0) 123 return 0; 124 125 return 1; 126 } 127 128 void 129 dw780_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct uba_vsoftc *sc = (void *)self; 132 struct sbi_attach_args *sa = aux; 133 int ubaddr = sa->sa_type & 3; 134 int i; 135 136 printf(": DW780\n"); 137 /* 138 * Fill in bus specific data. 139 */ 140 sc->uv_sc.uh_ubainit = dw780_init; 141 #ifdef notyet 142 sc->uv_sc.uh_ubapurge = dw780_purge; 143 #endif 144 sc->uv_sc.uh_beforescan = dw780_beforescan; 145 sc->uv_sc.uh_afterscan = dw780_afterscan; 146 sc->uv_sc.uh_errchk = dw780_errchk; 147 sc->uv_sc.uh_iot = &vax_mem_bus_space; 148 sc->uv_sc.uh_dmat = &sc->uv_dmat; 149 sc->uv_uba = (void *)sa->sa_ioh; 150 sc->uh_ibase = VAX_NBPG + ubaddr * VAX_NBPG; 151 sc->uv_sc.uh_type = UBA_UBA; 152 153 /* 154 * Set up dispatch vectors for DW780. 155 */ 156 for (i = 0x14; i < 0x18; i++) 157 scb_vecalloc(vecnum(0, i, sa->sa_nexnum), uba_dw780int, 158 sc, SCB_ISTACK, &sc->uv_sc.uh_intrcnt); 159 evcnt_attach_dynamic(&sc->uv_sc.uh_intrcnt, EVCNT_TYPE_INTR, NULL, 160 sc->uv_sc.uh_dev.dv_xname, "intr"); 161 162 /* 163 * Fill in variables used by the sgmap system. 164 */ 165 sc->uv_size = UBASIZE; /* Size in bytes of Unibus space */ 166 167 uba_dma_init(sc); 168 uba_attach(&sc->uv_sc, (parent->dv_unit ? UMEMB8600(ubaddr) : 169 UMEMA8600(ubaddr)) + (UBAPAGES * VAX_NBPG)); 170 } 171 172 void 173 dw780_beforescan(sc) 174 struct uba_softc *sc; 175 { 176 struct uba_vsoftc *vc = (void *)sc; 177 volatile int *hej = &vc->uv_uba->uba_sr; 178 179 *hej = *hej; 180 vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE; 181 } 182 183 void 184 dw780_afterscan(sc) 185 struct uba_softc *sc; 186 { 187 struct uba_vsoftc *vc = (void *)sc; 188 189 vc->uv_uba->uba_cr = UBACR_IFS | UBACR_BRIE | 190 UBACR_USEFIE | UBACR_SUEFIE | 191 (vc->uv_uba->uba_cr & 0x7c000000); 192 } 193 194 195 int 196 dw780_errchk(sc) 197 struct uba_softc *sc; 198 { 199 struct uba_vsoftc *vc = (void *)sc; 200 volatile int *hej = &vc->uv_uba->uba_sr; 201 202 if (*hej) { 203 *hej = *hej; 204 return 1; 205 } 206 return 0; 207 } 208 209 void 210 uba_dw780int(arg) 211 void *arg; 212 { 213 struct uba_vsoftc *vc = arg; 214 struct uba_regs *ur = vc->uv_uba; 215 struct ivec_dsp *scb_vec; 216 int br, vec; 217 218 br = mfpr(PR_IPL); 219 vec = ur->uba_brrvr[br - 0x14]; 220 if (vec <= 0) { 221 ubaerror(&vc->uv_sc, &br, (int *)&vec); 222 if (svec == 0) 223 return; 224 } 225 if (cold) 226 scb_fake(vec + vc->uh_ibase, br); 227 else { 228 scb_vec = (struct ivec_dsp *)((int)scb + 512 + 4 * vec); 229 (*scb_vec->hoppaddr)(scb_vec->pushlarg); 230 } 231 } 232 233 void 234 dw780_init(sc) 235 struct uba_softc *sc; 236 { 237 struct uba_vsoftc *vc = (void *)sc; 238 239 vc->uv_uba->uba_cr = UBACR_ADINIT; 240 vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE; 241 while ((vc->uv_uba->uba_cnfgr & UBACNFGR_UBIC) == 0) 242 ; 243 } 244 245 #ifdef notyet 246 void 247 dw780_purge(sc, bdp) 248 struct uba_softc *sc; 249 int bdp; 250 { 251 struct uba_vsoftc *vc = (void *)sc; 252 253 vc->uv_uba->uba_dpr[bdp] |= UBADPR_BNE; 254 } 255 #endif 256 257 int ubawedgecnt = 10; 258 int ubacrazy = 500; 259 int zvcnt_max = 5000; /* in 8 sec */ 260 int ubaerrcnt; 261 /* 262 * This routine is called by the locore code to process a UBA 263 * error on an 11/780 or 8600. The arguments are passed 264 * on the stack, and value-result (through some trickery). 265 * In particular, the uvec argument is used for further 266 * uba processing so the result aspect of it is very important. 267 * It must not be declared register. 268 */ 269 /*ARGSUSED*/ 270 void 271 ubaerror(uh, ipl, uvec) 272 register struct uba_softc *uh; 273 int *ipl, *uvec; 274 { 275 struct uba_vsoftc *vc = (void *)uh; 276 struct uba_regs *uba = vc->uv_uba; 277 register int sr, s; 278 char sbuf[256], sbuf2[256]; 279 280 if (*uvec == 0) { 281 /* 282 * Declare dt as unsigned so that negative values 283 * are handled as >8 below, in case time was set back. 284 */ 285 u_long dt = time.tv_sec - vc->uh_zvtime; 286 287 vc->uh_zvtotal++; 288 if (dt > 8) { 289 vc->uh_zvtime = time.tv_sec; 290 vc->uh_zvcnt = 0; 291 } 292 if (++vc->uh_zvcnt > zvcnt_max) { 293 printf("%s: too many zero vectors (%d in <%d sec)\n", 294 vc->uv_sc.uh_dev.dv_xname, vc->uh_zvcnt, (int)dt + 1); 295 296 bitmask_snprintf(uba->uba_cnfgr&(~0xff), UBACNFGR_BITS, 297 sbuf, sizeof(sbuf)); 298 printf("\tIPL 0x%x\n\tcnfgr: %s Adapter Code: 0x%x\n", 299 *ipl, sbuf, uba->uba_cnfgr&0xff); 300 301 bitmask_snprintf(uba->uba_sr, ubasr_bits, sbuf, sizeof(sbuf)); 302 printf("\tsr: %s\n\tdcr: %x (MIC %sOK)\n", 303 sbuf, uba->uba_dcr, 304 (uba->uba_dcr&0x8000000)?"":"NOT "); 305 306 ubareset(&vc->uv_sc); 307 } 308 return; 309 } 310 if (uba->uba_cnfgr & NEX_CFGFLT) { 311 bitmask_snprintf(uba->uba_sr, ubasr_bits, sbuf, sizeof(sbuf)); 312 bitmask_snprintf(uba->uba_cnfgr, NEXFLT_BITS, sbuf2, sizeof(sbuf2)); 313 printf("%s: sbi fault sr=%s cnfgr=%s\n", 314 vc->uv_sc.uh_dev.dv_xname, sbuf, sbuf2); 315 ubareset(&vc->uv_sc); 316 *uvec = 0; 317 return; 318 } 319 sr = uba->uba_sr; 320 s = spluba(); 321 bitmask_snprintf(uba->uba_sr, ubasr_bits, sbuf, sizeof(sbuf)); 322 printf("%s: uba error sr=%s fmer=%x fubar=%o\n", vc->uv_sc.uh_dev.dv_xname, 323 sbuf, uba->uba_fmer, 4*uba->uba_fubar); 324 splx(s); 325 uba->uba_sr = sr; 326 *uvec &= UBABRRVR_DIV; 327 if (++ubaerrcnt % ubawedgecnt == 0) { 328 if (ubaerrcnt > ubacrazy) 329 panic("uba crazy"); 330 printf("ERROR LIMIT "); 331 ubareset(&vc->uv_sc); 332 *uvec = 0; 333 } 334 } 335